Imported the beginning of the rowie-spezial and possible 2.2 release.

[people/pmueller/ipfire-2.x.git] / src / patches / openswan-2.4.12.kernel-2.6-klips.patch

packaging/utils/kernelpatch 2.6
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/README.openswan-2     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,112 @@
+*
+* RCSID $Id: README.openswan-2,v 1.1 2003-12-10 01:07:49 mcr Exp $
+*
+
+               ****************************************
+               * IPSEC for Linux, Release 2.xx series *
+               ****************************************
+
+
+
+1. Files
+
+The contents of linux/net/ipsec/ (see below) join the linux kernel source tree.
+as provided for higher up.
+
+The programs/ directory contains the user-level utilities which you need
+to run IPSEC.  See the top-level top/INSTALL to compile and install them.
+
+The testing/ directory contains test scripts.
+
+The doc/ directory contains -- what else -- documentation. 
+
+1.1. Kernel files
+
+The following are found in net/ipsec/:
+
+Makefile                       The Makefile
+Config.in                      The configuration script for make menuconfig
+defconfig                      Configuration defaults for first time.
+
+radij.c                                General-purpose radix-tree operations
+
+ipsec_ipcomp.c    IPCOMP encapsulate/decapsulate code.
+ipsec_ah.c        Authentication Header (AH) encapsulate/decapsulate code.
+ipsec_esp.c       Encapsulated Security Payload (ESP) encap/decap code.
+
+pfkey_v2.c                     PF_KEYv2 socket interface code.
+pfkey_v2_parser.c              PF_KEYv2 message parsing and processing code.
+
+ipsec_init.c                   Initialization code, /proc interface.
+ipsec_radij.c                  Interface with the radix tree code.
+ipsec_netlink.c                        Interface with the netlink code.
+ipsec_xform.c                  Routines and structures common to transforms.
+ipsec_tunnel.c                 The outgoing packet processing code.
+ipsec_rcv.c                    The incoming packet processing code.
+ipsec_md5c.c                   Somewhat modified RSADSI MD5 C code.
+ipsec_sha1.c                   Somewhat modified Steve Reid SHA-1 C code.
+
+sysctl_net_ipsec.c             /proc/sys/net/ipsec/* variable definitions.
+
+version.c                      symbolic link to project version.
+
+radij.h                                Headers for radij.c
+
+ipcomp.h                       Headers used by IPCOMP code.
+
+ipsec_radij.h                  Interface with the radix tree code.
+ipsec_netlink.h                        Headers used by the netlink interface.
+ipsec_encap.h                  Headers defining encapsulation structures.
+ipsec_xform.h                  Transform headers.
+ipsec_tunnel.h                 Headers used by tunneling code.
+ipsec_ipe4.h                   Headers for the IP-in-IP code.
+ipsec_ah.h                     Headers common to AH transforms.
+ipsec_md5h.h                   RSADSI MD5 headers.
+ipsec_sha1.h                   SHA-1 headers.
+ipsec_esp.h                    Headers common to ESP transfroms.
+ipsec_rcv.h                    Headers for incoming packet processing code.
+
+1.2. User-level files.
+
+The following are found in utils/:
+
+eroute.c       Create an "extended route" source code
+spi.c          Set up Security Associations source code
+spigrp.c        Link SPIs together source code.
+tncfg.c         Configure the tunneling features of the virtual interface
+               source code
+klipsdebug.c   Set/reset klips debugging features source code.
+version.c      symbolic link to project version.
+
+eroute.8       Create an "extended route" manual page
+spi.8          Set up Security Associations manual page
+spigrp.8        Link SPIs together manual page
+tncfg.8         Configure the tunneling features of the virtual interface
+               manual page
+klipsdebug.8   Set/reset klips debugging features manual page
+
+eroute.5       /proc/net/ipsec_eroute format manual page
+spi.5          /proc/net/ipsec_spi format manual page
+spigrp.5       /proc/net/ipsec_spigrp format manual page
+tncfg.5                /proc/net/ipsec_tncfg format manual page
+klipsdebug.5   /proc/net/ipsec_klipsdebug format manual page
+version.5      /proc/net/ipsec_version format manual page
+pf_key.5       /proc/net/pf_key format manual page
+
+Makefile       Utilities makefile.
+
+*.8            Manpages for the respective utils.
+
+
+1.3. Test files
+
+The test scripts are locate in testing/ and and documentation is found
+at doc/src/umltesting.html. Automated testing via "make check" is available
+provided that the User-Mode-Linux patches are available.
+
+*
+* $Log: README.openswan-2,v $
+* Revision 1.1  2003-12-10 01:07:49  mcr
+*      documentation for additions.
+*
+*
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/crypto/ciphers/aes/test_main.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,41 @@
+#include <stdio.h>
+#include <string.h>
+#include <sys/types.h>
+#include "aes_cbc.h"
+#define AES_BLOCK_SIZE 16
+#define KEY_SIZE       128     /* bits */
+#define KEY            "1234567890123456"
+#define STR            "hola guaso como estaisss ... 012"
+#define STRSZ          (sizeof(STR)-1)
+
+#define EMT_AESCBC_BLKLEN AES_BLOCK_SIZE
+#define AES_CONTEXT_T  aes_context
+#define EMT_ESPAES_KEY_SZ 16
+int pretty_print(const unsigned char *buf, int count) {
+       int i=0;
+       for (;i<count;i++) {
+               if (i%8==0) putchar(' ');
+               if (i%16==0) putchar('\n');
+               printf ("%02hhx ", buf[i]);
+       }
+       putchar('\n');
+       return i;
+}
+//#define SIZE STRSZ/2
+#define SIZE STRSZ
+int main() {
+       int ret;
+       char buf0[SIZE+1], buf1[SIZE+1];
+       char IV[AES_BLOCK_SIZE]="\0\0\0\0\0\0\0\0" "\0\0\0\0\0\0\0\0";
+       aes_context ac; 
+       AES_set_key(&ac, KEY, KEY_SIZE);
+       //pretty_print((char *)&ac.aes_e_key, sizeof(ac.aes_e_key));
+       memset(buf0, 0, sizeof (buf0));
+       memset(buf1, 0, sizeof (buf1));
+       ret=AES_cbc_encrypt(&ac, STR, buf0, SIZE, IV, 1);
+       pretty_print(buf0, SIZE);
+       printf("size=%d ret=%d\n%s\n", SIZE, ret, buf0);
+       ret=AES_cbc_encrypt(&ac, buf0, buf1, SIZE, IV, 0);
+       printf("size=%d ret=%d\n%s\n", SIZE, ret, buf1);
+       return 0;
+}
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/crypto/ciphers/aes/test_main_mac.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,30 @@
+#include <stdio.h>
+#include <sys/types.h>
+#include <string.h>
+#include "aes.h"
+#include "aes_xcbc_mac.h"
+#define STR "Hola guasssso c|mo estais ...012"  
+void print_hash(const __u8 *hash) {
+       printf("%08x %08x %08x %08x\n", 
+                       *(__u32*)(&hash[0]), 
+                       *(__u32*)(&hash[4]), 
+                       *(__u32*)(&hash[8]), 
+                       *(__u32*)(&hash[12]));
+}
+int main(int argc, char *argv[]) {
+       aes_block key= { 0xdeadbeef, 0xceedcaca, 0xcafebabe, 0xff010204 };
+       __u8  hash[16];
+       char *str = argv[1];
+       aes_context_mac ctx;
+       if (str==NULL) {
+               fprintf(stderr, "pasame el str\n");
+               return 255;
+       }
+       AES_xcbc_mac_set_key(&ctx, (__u8 *)&key, sizeof(key));
+       AES_xcbc_mac_hash(&ctx, str, strlen(str), hash);
+       print_hash(hash);
+       str[2]='x';
+       AES_xcbc_mac_hash(&ctx, str, strlen(str), hash);
+       print_hash(hash);
+       return 0;
+}
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/crypto/aes.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,97 @@
+// I retain copyright in this code but I encourage its free use provided
+// that I don't carry any responsibility for the results. I am especially 
+// happy to see it used in free and open source software. If you do use 
+// it I would appreciate an acknowledgement of its origin in the code or
+// the product that results and I would also appreciate knowing a little
+// about the use to which it is being put. I am grateful to Frank Yellin
+// for some ideas that are used in this implementation.
+//
+// Dr B. R. Gladman <brg@gladman.uk.net> 6th April 2001.
+//
+// This is an implementation of the AES encryption algorithm (Rijndael)
+// designed by Joan Daemen and Vincent Rijmen. This version is designed
+// to provide both fixed and dynamic block and key lengths and can also 
+// run with either big or little endian internal byte order (see aes.h). 
+// It inputs block and key lengths in bytes with the legal values being 
+// 16, 24 and 32.
+
+/*
+ * Modified by Jari Ruusu,  May 1 2001
+ *  - Fixed some compile warnings, code was ok but gcc warned anyway.
+ *  - Changed basic types: byte -> unsigned char, word -> u_int32_t
+ *  - Major name space cleanup: Names visible to outside now begin
+ *    with "aes_" or "AES_". A lot of stuff moved from aes.h to aes.c
+ *  - Removed C++ and DLL support as part of name space cleanup.
+ *  - Eliminated unnecessary recomputation of tables. (actual bug fix)
+ *  - Merged precomputed constant tables to aes.c file.
+ *  - Removed data alignment restrictions for portability reasons.
+ *  - Made block and key lengths accept bit count (128/192/256)
+ *    as well byte count (16/24/32).
+ *  - Removed all error checks. This change also eliminated the need
+ *    to preinitialize the context struct to zero.
+ *  - Removed some totally unused constants.
+ */
+
+#ifndef _AES_H
+#define _AES_H
+
+#if defined(__linux__) && defined(__KERNEL__)
+#  include <linux/types.h>
+#else 
+#  include <sys/types.h>
+#endif
+
+// CONFIGURATION OPTIONS (see also aes.c)
+//
+// Define AES_BLOCK_SIZE to set the cipher block size (16, 24 or 32) or
+// leave this undefined for dynamically variable block size (this will
+// result in much slower code).
+// IMPORTANT NOTE: AES_BLOCK_SIZE is in BYTES (16, 24, 32 or undefined). If
+// left undefined a slower version providing variable block length is compiled
+
+#define AES_BLOCK_SIZE  16
+
+// The number of key schedule words for different block and key lengths
+// allowing for method of computation which requires the length to be a
+// multiple of the key length
+//
+// Nk =       4   6   8
+//        -------------
+// Nb = 4 |  60  60  64
+//      6 |  96  90  96
+//      8 | 120 120 120
+
+#if !defined(AES_BLOCK_SIZE) || (AES_BLOCK_SIZE == 32)
+#define AES_KS_LENGTH   120
+#define AES_RC_LENGTH    29
+#else
+#define AES_KS_LENGTH   4 * AES_BLOCK_SIZE
+#define AES_RC_LENGTH   (9 * AES_BLOCK_SIZE) / 8 - 8
+#endif
+
+typedef struct
+{
+    u_int32_t    aes_Nkey;      // the number of words in the key input block
+    u_int32_t    aes_Nrnd;      // the number of cipher rounds
+    u_int32_t    aes_e_key[AES_KS_LENGTH];   // the encryption key schedule
+    u_int32_t    aes_d_key[AES_KS_LENGTH];   // the decryption key schedule
+#if !defined(AES_BLOCK_SIZE)
+    u_int32_t    aes_Ncol;      // the number of columns in the cipher state
+#endif
+} aes_context;
+
+// THE CIPHER INTERFACE
+
+#if !defined(AES_BLOCK_SIZE)
+extern void aes_set_blk(aes_context *, const int);
+#endif
+extern void aes_set_key(aes_context *, const unsigned char [], const int, const int);
+extern void aes_encrypt(const aes_context *, const unsigned char [], unsigned char []);
+extern void aes_decrypt(const aes_context *, const unsigned char [], unsigned char []);
+
+// The block length inputs to aes_set_block and aes_set_key are in numbers
+// of bytes or bits.  The calls to subroutines must be made in the above
+// order but multiple calls can be made without repeating earlier calls
+// if their parameters have not changed.
+
+#endif  // _AES_H
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/crypto/aes_cbc.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,4 @@
+/* Glue header */
+#include "aes.h"
+int AES_set_key(aes_context *aes_ctx, const u_int8_t * key, int keysize);
+int AES_cbc_encrypt(aes_context *ctx, const u_int8_t * in, u_int8_t * out, int ilen, const u_int8_t * iv, int encrypt);
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/crypto/aes_xcbc_mac.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,12 @@
+#ifndef _AES_XCBC_MAC_H
+#define _AES_XCBC_MAC_H
+
+typedef u_int32_t aes_block[4];
+typedef struct {
+       aes_context ctx_k1;
+       aes_block k2;
+       aes_block k3;
+} aes_context_mac;
+int AES_xcbc_mac_set_key(aes_context_mac *ctxm, const u_int8_t *key, int keylen);
+int AES_xcbc_mac_hash(const aes_context_mac *ctxm, const u_int8_t * in, int ilen, u_int8_t hash[16]);
+#endif /* _AES_XCBC_MAC_H */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/crypto/cbc_generic.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,110 @@
+#ifndef _CBC_GENERIC_H
+#define _CBC_GENERIC_H
+/*
+ * CBC macro helpers
+ *
+ * Author: JuanJo Ciarlante <jjo-ipsec@mendoza.gov.ar>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ */
+
+/*
+ *     Heavily inspired in loop_AES
+ */
+#define CBC_IMPL_BLK16(name, ctx_type, addr_type, enc_func, dec_func) \
+int name(ctx_type *ctx, const u_int8_t * in, u_int8_t * out, int ilen, const u_int8_t * iv, int encrypt) { \
+       int ret=ilen, pos; \
+       const u_int32_t *iv_i; \
+       if ((ilen) % 16) return 0; \
+       if (encrypt) { \
+               pos=0; \
+               while(pos<ilen) { \
+                       if (pos==0) \
+                               iv_i=(const u_int32_t*) iv; \
+                       else \
+                               iv_i=(const u_int32_t*) (out-16); \
+                       *((u_int32_t *)(&out[ 0])) = iv_i[0]^*((const u_int32_t *)(&in[ 0])); \
+                       *((u_int32_t *)(&out[ 4])) = iv_i[1]^*((const u_int32_t *)(&in[ 4])); \
+                       *((u_int32_t *)(&out[ 8])) = iv_i[2]^*((const u_int32_t *)(&in[ 8])); \
+                       *((u_int32_t *)(&out[12])) = iv_i[3]^*((const u_int32_t *)(&in[12])); \
+                       enc_func(ctx, (addr_type) out, (addr_type) out); \
+                       in+=16; \
+                       out+=16; \
+                       pos+=16; \
+               } \
+       } else { \
+               pos=ilen-16; \
+               in+=pos; \
+               out+=pos; \
+               while(pos>=0) { \
+                       dec_func(ctx, (const addr_type) in, (addr_type) out); \
+                       if (pos==0) \
+                               iv_i=(const u_int32_t*) (iv); \
+                       else \
+                               iv_i=(const u_int32_t*) (in-16); \
+                       *((u_int32_t *)(&out[ 0])) ^= iv_i[0]; \
+                       *((u_int32_t *)(&out[ 4])) ^= iv_i[1]; \
+                       *((u_int32_t *)(&out[ 8])) ^= iv_i[2]; \
+                       *((u_int32_t *)(&out[12])) ^= iv_i[3]; \
+                       in-=16; \
+                       out-=16; \
+                       pos-=16; \
+               } \
+       } \
+       return ret; \
+} 
+#define CBC_IMPL_BLK8(name, ctx_type, addr_type,  enc_func, dec_func) \
+int name(ctx_type *ctx, u_int8_t * in, u_int8_t * out, int ilen, const u_int8_t * iv, int encrypt) { \
+       int ret=ilen, pos; \
+       const u_int32_t *iv_i; \
+       if ((ilen) % 8) return 0; \
+       if (encrypt) { \
+               pos=0; \
+               while(pos<ilen) { \
+                       if (pos==0) \
+                               iv_i=(const u_int32_t*) iv; \
+                       else \
+                               iv_i=(const u_int32_t*) (out-8); \
+                       *((u_int32_t *)(&out[ 0])) = iv_i[0]^*((const u_int32_t *)(&in[ 0])); \
+                       *((u_int32_t *)(&out[ 4])) = iv_i[1]^*((const u_int32_t *)(&in[ 4])); \
+                       enc_func(ctx, (addr_type)out, (addr_type)out); \
+                       in+=8; \
+                       out+=8; \
+                       pos+=8; \
+               } \
+       } else { \
+               pos=ilen-8; \
+               in+=pos; \
+               out+=pos; \
+               while(pos>=0) { \
+                       dec_func(ctx, (const addr_type)in, (addr_type)out); \
+                       if (pos==0) \
+                               iv_i=(const u_int32_t*) (iv); \
+                       else \
+                               iv_i=(const u_int32_t*) (in-8); \
+                       *((u_int32_t *)(&out[ 0])) ^= iv_i[0]; \
+                       *((u_int32_t *)(&out[ 4])) ^= iv_i[1]; \
+                       in-=8; \
+                       out-=8; \
+                       pos-=8; \
+               } \
+       } \
+       return ret; \
+} 
+#define CBC_DECL(name, ctx_type) \
+int name(ctx_type *ctx, u_int8_t * in, u_int8_t * out, int ilen, const u_int8_t * iv, int encrypt)
+/*
+Eg.:
+CBC_IMPL_BLK16(AES_cbc_encrypt, aes_context, u_int8_t *, aes_encrypt, aes_decrypt);
+CBC_DECL(AES_cbc_encrypt, aes_context);
+*/
+#endif /* _CBC_GENERIC_H */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/crypto/des.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,298 @@
+/* crypto/des/des.org */
+/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+/* WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING 
+ *
+ * Always modify des.org since des.h is automatically generated from
+ * it during SSLeay configuration.
+ *
+ * WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
+ */
+
+#ifndef HEADER_DES_H
+#define HEADER_DES_H
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+
+/* If this is set to 'unsigned int' on a DEC Alpha, this gives about a
+ * %20 speed up (longs are 8 bytes, int's are 4). */
+/* Must be unsigned int on ia64/Itanium or DES breaks badly */
+
+#ifdef __KERNEL__
+#include <linux/types.h>
+#else
+#include <sys/types.h>
+#endif
+
+#ifndef DES_LONG
+#define DES_LONG u_int32_t
+#endif
+
+typedef unsigned char des_cblock[8];
+typedef struct { des_cblock ks; } des_key_schedule[16];
+
+#define DES_KEY_SZ     (sizeof(des_cblock))
+#define DES_SCHEDULE_SZ (sizeof(des_key_schedule))
+
+#define DES_ENCRYPT    1
+#define DES_DECRYPT    0
+
+#define DES_CBC_MODE   0
+#define DES_PCBC_MODE  1
+
+#define des_ecb2_encrypt(i,o,k1,k2,e) \
+       des_ecb3_encrypt((i),(o),(k1),(k2),(k1),(e))
+
+#define des_ede2_cbc_encrypt(i,o,l,k1,k2,iv,e) \
+       des_ede3_cbc_encrypt((i),(o),(l),(k1),(k2),(k1),(iv),(e))
+
+#define des_ede2_cfb64_encrypt(i,o,l,k1,k2,iv,n,e) \
+       des_ede3_cfb64_encrypt((i),(o),(l),(k1),(k2),(k1),(iv),(n),(e))
+
+#define des_ede2_ofb64_encrypt(i,o,l,k1,k2,iv,n) \
+       des_ede3_ofb64_encrypt((i),(o),(l),(k1),(k2),(k1),(iv),(n))
+
+#define C_Block des_cblock
+#define Key_schedule des_key_schedule
+#ifdef KERBEROS
+#define ENCRYPT DES_ENCRYPT
+#define DECRYPT DES_DECRYPT
+#endif
+#define KEY_SZ DES_KEY_SZ
+#define string_to_key des_string_to_key
+#define read_pw_string des_read_pw_string
+#define random_key des_random_key
+#define pcbc_encrypt des_pcbc_encrypt
+#define set_key des_set_key
+#define key_sched des_key_sched
+#define ecb_encrypt des_ecb_encrypt
+#define cbc_encrypt des_cbc_encrypt
+#define ncbc_encrypt des_ncbc_encrypt
+#define xcbc_encrypt des_xcbc_encrypt
+#define cbc_cksum des_cbc_cksum
+#define quad_cksum des_quad_cksum
+
+/* For compatibility with the MIT lib - eay 20/05/92 */
+typedef des_key_schedule bit_64;
+#define des_fixup_key_parity des_set_odd_parity
+#define des_check_key_parity check_parity
+
+extern int des_check_key;      /* defaults to false */
+extern int des_rw_mode;                /* defaults to DES_PCBC_MODE */
+
+/* The next line is used to disable full ANSI prototypes, if your
+ * compiler has problems with the prototypes, make sure this line always
+ * evaluates to true :-) */
+#if defined(MSDOS) || defined(__STDC__)
+#undef NOPROTO
+#endif
+#ifndef NOPROTO
+char *des_options(void);
+void des_ecb3_encrypt(des_cblock *input,des_cblock *output,
+       des_key_schedule ks1,des_key_schedule ks2,
+       des_key_schedule ks3, int enc);
+DES_LONG des_cbc_cksum(des_cblock *input,des_cblock *output,
+       long length,des_key_schedule schedule,des_cblock *ivec);
+void des_cbc_encrypt(des_cblock *input,des_cblock *output,long length,
+       des_key_schedule schedule,des_cblock *ivec,int enc);
+void des_ncbc_encrypt(des_cblock *input,des_cblock *output,long length,
+       des_key_schedule schedule,des_cblock *ivec,int enc);
+void des_xcbc_encrypt(des_cblock *input,des_cblock *output,long length,
+       des_key_schedule schedule,des_cblock *ivec,
+       des_cblock *inw,des_cblock *outw,int enc);
+void des_cfb_encrypt(unsigned char *in,unsigned char *out,int numbits,
+       long length,des_key_schedule schedule,des_cblock *ivec,int enc);
+void des_ecb_encrypt(des_cblock *input,des_cblock *output,
+       des_key_schedule ks,int enc);
+void des_encrypt(DES_LONG *data,des_key_schedule ks, int enc);
+void des_encrypt2(DES_LONG *data,des_key_schedule ks, int enc);
+void des_encrypt3(DES_LONG *data, des_key_schedule ks1,
+       des_key_schedule ks2, des_key_schedule ks3);
+void des_decrypt3(DES_LONG *data, des_key_schedule ks1,
+       des_key_schedule ks2, des_key_schedule ks3);
+void des_ede3_cbc_encrypt(des_cblock *input, des_cblock *output, 
+       long length, des_key_schedule ks1, des_key_schedule ks2, 
+       des_key_schedule ks3, des_cblock *ivec, int enc);
+void des_ede3_cfb64_encrypt(unsigned char *in, unsigned char *out,
+       long length, des_key_schedule ks1, des_key_schedule ks2,
+       des_key_schedule ks3, des_cblock *ivec, int *num, int enc);
+void des_ede3_ofb64_encrypt(unsigned char *in, unsigned char *out,
+       long length, des_key_schedule ks1, des_key_schedule ks2,
+       des_key_schedule ks3, des_cblock *ivec, int *num);
+
+void des_xwhite_in2out(des_cblock (*des_key), des_cblock (*in_white),
+       des_cblock (*out_white));
+
+int des_enc_read(int fd,char *buf,int len,des_key_schedule sched,
+       des_cblock *iv);
+int des_enc_write(int fd,char *buf,int len,des_key_schedule sched,
+       des_cblock *iv);
+char *des_fcrypt(const char *buf,const char *salt, char *ret);
+#ifdef PERL5
+char *des_crypt(const char *buf,const char *salt);
+#else
+/* some stupid compilers complain because I have declared char instead
+ * of const char */
+#ifndef __KERNEL__
+#ifdef HEADER_DES_LOCL_H
+char *crypt(const char *buf,const char *salt);
+#else /* HEADER_DES_LOCL_H */
+char *crypt(void);
+#endif /* HEADER_DES_LOCL_H */
+#endif /* __KERNEL__ */
+#endif /* PERL5 */
+void des_ofb_encrypt(unsigned char *in,unsigned char *out,
+       int numbits,long length,des_key_schedule schedule,des_cblock *ivec);
+void des_pcbc_encrypt(des_cblock *input,des_cblock *output,long length,
+       des_key_schedule schedule,des_cblock *ivec,int enc);
+DES_LONG des_quad_cksum(des_cblock *input,des_cblock *output,
+       long length,int out_count,des_cblock *seed);
+void des_random_seed(des_cblock key);
+void des_random_key(des_cblock ret);
+int des_read_password(des_cblock *key,char *prompt,int verify);
+int des_read_2passwords(des_cblock *key1,des_cblock *key2,
+       char *prompt,int verify);
+int des_read_pw_string(char *buf,int length,char *prompt,int verify);
+void des_set_odd_parity(des_cblock *key);
+int des_is_weak_key(des_cblock *key);
+int des_set_key(des_cblock *key,des_key_schedule schedule);
+int des_key_sched(des_cblock *key,des_key_schedule schedule);
+void des_string_to_key(char *str,des_cblock *key);
+void des_string_to_2keys(char *str,des_cblock *key1,des_cblock *key2);
+void des_cfb64_encrypt(unsigned char *in, unsigned char *out, long length,
+       des_key_schedule schedule, des_cblock *ivec, int *num, int enc);
+void des_ofb64_encrypt(unsigned char *in, unsigned char *out, long length,
+       des_key_schedule schedule, des_cblock *ivec, int *num);
+int des_read_pw(char *buf, char *buff, int size, char *prompt, int verify);
+
+/* Extra functions from Mark Murray <mark@grondar.za> */
+/* The following functions are not in the normal unix build or the
+ * SSLeay build.  When using the SSLeay build, use RAND_seed()
+ * and RAND_bytes() instead. */
+int des_new_random_key(des_cblock *key);
+void des_init_random_number_generator(des_cblock *key);
+void des_set_random_generator_seed(des_cblock *key);
+void des_set_sequence_number(des_cblock new_sequence_number);
+void des_generate_random_block(des_cblock *block);
+
+#else
+
+char *des_options();
+void des_ecb3_encrypt();
+DES_LONG des_cbc_cksum();
+void des_cbc_encrypt();
+void des_ncbc_encrypt();
+void des_xcbc_encrypt();
+void des_cfb_encrypt();
+void des_ede3_cfb64_encrypt();
+void des_ede3_ofb64_encrypt();
+void des_ecb_encrypt();
+void des_encrypt();
+void des_encrypt2();
+void des_encrypt3();
+void des_decrypt3();
+void des_ede3_cbc_encrypt();
+int des_enc_read();
+int des_enc_write();
+char *des_fcrypt();
+#ifdef PERL5
+char *des_crypt();
+#else
+char *crypt();
+#endif
+void des_ofb_encrypt();
+void des_pcbc_encrypt();
+DES_LONG des_quad_cksum();
+void des_random_seed();
+void des_random_key();
+int des_read_password();
+int des_read_2passwords();
+int des_read_pw_string();
+void des_set_odd_parity();
+int des_is_weak_key();
+int des_set_key();
+int des_key_sched();
+void des_string_to_key();
+void des_string_to_2keys();
+void des_cfb64_encrypt();
+void des_ofb64_encrypt();
+int des_read_pw();
+void des_xwhite_in2out();
+
+/* Extra functions from Mark Murray <mark@grondar.za> */
+/* The following functions are not in the normal unix build or the
+ * SSLeay build.  When using the SSLeay build, use RAND_seed()
+ * and RAND_bytes() instead. */
+#ifdef FreeBSD
+int des_new_random_key();
+void des_init_random_number_generator();
+void des_set_random_generator_seed();
+void des_set_sequence_number();
+void des_generate_random_block();
+#endif
+
+#endif
+
+#ifdef  __cplusplus
+}
+#endif
+
+#endif
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/des/des_locl.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,515 @@
+/* crypto/des/des_locl.org */
+/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+/* WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
+ *
+ * Always modify des_locl.org since des_locl.h is automatically generated from
+ * it during SSLeay configuration.
+ *
+ * WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING WARNING
+ */
+
+#ifndef HEADER_DES_LOCL_H
+#define HEADER_DES_LOCL_H
+
+#if defined(WIN32) || defined(WIN16)
+#ifndef MSDOS
+#define MSDOS
+#endif
+#endif
+
+#include "crypto/des.h"
+
+#ifndef DES_DEFAULT_OPTIONS
+/* the following is tweaked from a config script, that is why it is a
+ * protected undef/define */
+#ifndef DES_PTR
+#define DES_PTR
+#endif
+
+/* This helps C compiler generate the correct code for multiple functional
+ * units.  It reduces register dependancies at the expense of 2 more
+ * registers */
+#ifndef DES_RISC1
+#define DES_RISC1
+#endif
+
+#ifndef DES_RISC2
+#undef DES_RISC2
+#endif
+
+#if defined(DES_RISC1) && defined(DES_RISC2)
+YOU SHOULD NOT HAVE BOTH DES_RISC1 AND DES_RISC2 DEFINED!!!!!
+#endif
+
+/* Unroll the inner loop, this sometimes helps, sometimes hinders.
+ * Very mucy CPU dependant */
+#ifndef DES_UNROLL
+#define DES_UNROLL
+#endif
+
+/* These default values were supplied by
+ * Peter Gutman <pgut001@cs.auckland.ac.nz>
+ * They are only used if nothing else has been defined */
+#if !defined(DES_PTR) && !defined(DES_RISC1) && !defined(DES_RISC2) && !defined(DES_UNROLL)
+/* Special defines which change the way the code is built depending on the
+   CPU and OS.  For SGI machines you can use _MIPS_SZLONG (32 or 64) to find
+   even newer MIPS CPU's, but at the moment one size fits all for
+   optimization options.  Older Sparc's work better with only UNROLL, but
+   there's no way to tell at compile time what it is you're running on */
+ 
+#if defined( sun )             /* Newer Sparc's */
+  #define DES_PTR
+  #define DES_RISC1
+  #define DES_UNROLL
+#elif defined( __ultrix )      /* Older MIPS */
+  #define DES_PTR
+  #define DES_RISC2
+  #define DES_UNROLL
+#elif defined( __osf1__ )      /* Alpha */
+  #define DES_PTR
+  #define DES_RISC2
+#elif defined ( _AIX )         /* RS6000 */
+  /* Unknown */
+#elif defined( __hpux )                /* HP-PA */
+  /* Unknown */
+#elif defined( __aux )         /* 68K */
+  /* Unknown */
+#elif defined( __dgux )                /* 88K (but P6 in latest boxes) */
+  #define DES_UNROLL
+#elif defined( __sgi )         /* Newer MIPS */
+  #define DES_PTR
+  #define DES_RISC2
+  #define DES_UNROLL
+#elif defined( i386 )          /* x86 boxes, should be gcc */
+  #define DES_PTR
+  #define DES_RISC1
+  #define DES_UNROLL
+#endif /* Systems-specific speed defines */
+#endif
+
+#endif /* DES_DEFAULT_OPTIONS */
+
+#ifdef MSDOS           /* Visual C++ 2.1 (Windows NT/95) */
+#include <stdlib.h>
+#include <errno.h>
+#include <time.h>
+#include <io.h>
+#ifndef RAND
+#define RAND
+#endif
+#undef NOPROTO
+#endif
+
+#if defined(__STDC__) || defined(VMS) || defined(M_XENIX) || defined(MSDOS)
+#ifndef __KERNEL__
+#include <string.h>
+#else
+#include <linux/string.h>
+#endif
+#endif
+
+#ifndef RAND
+#define RAND
+#endif
+
+#ifdef linux
+#undef RAND
+#endif
+
+#ifdef MSDOS
+#define getpid() 2
+#define RAND
+#undef NOPROTO
+#endif
+
+#if defined(NOCONST)
+#define const
+#endif
+
+#ifdef __STDC__
+#undef NOPROTO
+#endif
+
+#ifdef RAND
+#define srandom(s) srand(s)
+#define random rand
+#endif
+
+#define ITERATIONS 16
+#define HALF_ITERATIONS 8
+
+/* used in des_read and des_write */
+#define MAXWRITE       (1024*16)
+#define BSIZE          (MAXWRITE+4)
+
+#define c2l(c,l)       (l =((DES_LONG)(*((c)++)))    , \
+                        l|=((DES_LONG)(*((c)++)))<< 8L, \
+                        l|=((DES_LONG)(*((c)++)))<<16L, \
+                        l|=((DES_LONG)(*((c)++)))<<24L)
+
+/* NOTE - c is not incremented as per c2l */
+#define c2ln(c,l1,l2,n)        { \
+                       c+=n; \
+                       l1=l2=0; \
+                       switch (n) { \
+                       case 8: l2 =((DES_LONG)(*(--(c))))<<24L; \
+                       case 7: l2|=((DES_LONG)(*(--(c))))<<16L; \
+                       case 6: l2|=((DES_LONG)(*(--(c))))<< 8L; \
+                       case 5: l2|=((DES_LONG)(*(--(c))));     \
+                       case 4: l1 =((DES_LONG)(*(--(c))))<<24L; \
+                       case 3: l1|=((DES_LONG)(*(--(c))))<<16L; \
+                       case 2: l1|=((DES_LONG)(*(--(c))))<< 8L; \
+                       case 1: l1|=((DES_LONG)(*(--(c))));     \
+                               } \
+                       }
+
+#define l2c(l,c)       (*((c)++)=(unsigned char)(((l)     )&0xff), \
+                        *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \
+                        *((c)++)=(unsigned char)(((l)>>16L)&0xff), \
+                        *((c)++)=(unsigned char)(((l)>>24L)&0xff))
+
+/* replacements for htonl and ntohl since I have no idea what to do
+ * when faced with machines with 8 byte longs. */
+#define HDRSIZE 4
+
+#define n2l(c,l)       (l =((DES_LONG)(*((c)++)))<<24L, \
+                        l|=((DES_LONG)(*((c)++)))<<16L, \
+                        l|=((DES_LONG)(*((c)++)))<< 8L, \
+                        l|=((DES_LONG)(*((c)++))))
+
+#define l2n(l,c)       (*((c)++)=(unsigned char)(((l)>>24L)&0xff), \
+                        *((c)++)=(unsigned char)(((l)>>16L)&0xff), \
+                        *((c)++)=(unsigned char)(((l)>> 8L)&0xff), \
+                        *((c)++)=(unsigned char)(((l)     )&0xff))
+
+/* NOTE - c is not incremented as per l2c */
+#define l2cn(l1,l2,c,n)        { \
+                       c+=n; \
+                       switch (n) { \
+                       case 8: *(--(c))=(unsigned char)(((l2)>>24L)&0xff); \
+                       case 7: *(--(c))=(unsigned char)(((l2)>>16L)&0xff); \
+                       case 6: *(--(c))=(unsigned char)(((l2)>> 8L)&0xff); \
+                       case 5: *(--(c))=(unsigned char)(((l2)     )&0xff); \
+                       case 4: *(--(c))=(unsigned char)(((l1)>>24L)&0xff); \
+                       case 3: *(--(c))=(unsigned char)(((l1)>>16L)&0xff); \
+                       case 2: *(--(c))=(unsigned char)(((l1)>> 8L)&0xff); \
+                       case 1: *(--(c))=(unsigned char)(((l1)     )&0xff); \
+                               } \
+                       }
+
+#if defined(WIN32)
+#define        ROTATE(a,n)     (_lrotr(a,n))
+#else
+#define        ROTATE(a,n)     (((a)>>(n))+((a)<<(32-(n))))
+#endif
+
+/* Don't worry about the LOAD_DATA() stuff, that is used by
+ * fcrypt() to add it's little bit to the front */
+
+#ifdef DES_FCRYPT
+
+#define LOAD_DATA_tmp(R,S,u,t,E0,E1) \
+       { DES_LONG tmp; LOAD_DATA(R,S,u,t,E0,E1,tmp); }
+
+#define LOAD_DATA(R,S,u,t,E0,E1,tmp) \
+       t=R^(R>>16L); \
+       u=t&E0; t&=E1; \
+       tmp=(u<<16); u^=R^s[S  ]; u^=tmp; \
+       tmp=(t<<16); t^=R^s[S+1]; t^=tmp
+#else
+#define LOAD_DATA_tmp(a,b,c,d,e,f) LOAD_DATA(a,b,c,d,e,f,g)
+#define LOAD_DATA(R,S,u,t,E0,E1,tmp) \
+       u=R^s[S  ]; \
+       t=R^s[S+1]
+#endif
+
+/* The changes to this macro may help or hinder, depending on the
+ * compiler and the achitecture.  gcc2 always seems to do well :-).
+ * Inspired by Dana How <how@isl.stanford.edu>
+ * DO NOT use the alternative version on machines with 8 byte longs.
+ * It does not seem to work on the Alpha, even when DES_LONG is 4
+ * bytes, probably an issue of accessing non-word aligned objects :-( */
+#ifdef DES_PTR
+
+/* It recently occured to me that 0^0^0^0^0^0^0 == 0, so there
+ * is no reason to not xor all the sub items together.  This potentially
+ * saves a register since things can be xored directly into L */
+
+#if defined(DES_RISC1) || defined(DES_RISC2)
+#ifdef DES_RISC1
+#define D_ENCRYPT(LL,R,S) { \
+       unsigned int u1,u2,u3; \
+       LOAD_DATA(R,S,u,t,E0,E1,u1); \
+       u2=(int)u>>8L; \
+       u1=(int)u&0xfc; \
+       u2&=0xfc; \
+       t=ROTATE(t,4); \
+       u>>=16L; \
+       LL^= *(DES_LONG *)((unsigned char *)des_SP      +u1); \
+       LL^= *(DES_LONG *)((unsigned char *)des_SP+0x200+u2); \
+       u3=(int)(u>>8L); \
+       u1=(int)u&0xfc; \
+       u3&=0xfc; \
+       LL^= *(DES_LONG *)((unsigned char *)des_SP+0x400+u1); \
+       LL^= *(DES_LONG *)((unsigned char *)des_SP+0x600+u3); \
+       u2=(int)t>>8L; \
+       u1=(int)t&0xfc; \
+       u2&=0xfc; \
+       t>>=16L; \
+       LL^= *(DES_LONG *)((unsigned char *)des_SP+0x100+u1); \
+       LL^= *(DES_LONG *)((unsigned char *)des_SP+0x300+u2); \
+       u3=(int)t>>8L; \
+       u1=(int)t&0xfc; \
+       u3&=0xfc; \
+       LL^= *(DES_LONG *)((unsigned char *)des_SP+0x500+u1); \
+       LL^= *(DES_LONG *)((unsigned char *)des_SP+0x700+u3); }
+#endif
+#ifdef DES_RISC2
+#define D_ENCRYPT(LL,R,S) { \
+       unsigned int u1,u2,s1,s2; \
+       LOAD_DATA(R,S,u,t,E0,E1,u1); \
+       u2=(int)u>>8L; \
+       u1=(int)u&0xfc; \
+       u2&=0xfc; \
+       t=ROTATE(t,4); \
+       LL^= *(DES_LONG *)((unsigned char *)des_SP      +u1); \
+       LL^= *(DES_LONG *)((unsigned char *)des_SP+0x200+u2); \
+       s1=(int)(u>>16L); \
+       s2=(int)(u>>24L); \
+       s1&=0xfc; \
+       s2&=0xfc; \
+       LL^= *(DES_LONG *)((unsigned char *)des_SP+0x400+s1); \
+       LL^= *(DES_LONG *)((unsigned char *)des_SP+0x600+s2); \
+       u2=(int)t>>8L; \
+       u1=(int)t&0xfc; \
+       u2&=0xfc; \
+       LL^= *(DES_LONG *)((unsigned char *)des_SP+0x100+u1); \
+       LL^= *(DES_LONG *)((unsigned char *)des_SP+0x300+u2); \
+       s1=(int)(t>>16L); \
+       s2=(int)(t>>24L); \
+       s1&=0xfc; \
+       s2&=0xfc; \
+       LL^= *(DES_LONG *)((unsigned char *)des_SP+0x500+s1); \
+       LL^= *(DES_LONG *)((unsigned char *)des_SP+0x700+s2); }
+#endif
+#else
+#define D_ENCRYPT(LL,R,S) { \
+       LOAD_DATA_tmp(R,S,u,t,E0,E1); \
+       t=ROTATE(t,4); \
+       LL^= \
+       *(DES_LONG *)((unsigned char *)des_SP      +((u     )&0xfc))^ \
+       *(DES_LONG *)((unsigned char *)des_SP+0x200+((u>> 8L)&0xfc))^ \
+       *(DES_LONG *)((unsigned char *)des_SP+0x400+((u>>16L)&0xfc))^ \
+       *(DES_LONG *)((unsigned char *)des_SP+0x600+((u>>24L)&0xfc))^ \
+       *(DES_LONG *)((unsigned char *)des_SP+0x100+((t     )&0xfc))^ \
+       *(DES_LONG *)((unsigned char *)des_SP+0x300+((t>> 8L)&0xfc))^ \
+       *(DES_LONG *)((unsigned char *)des_SP+0x500+((t>>16L)&0xfc))^ \
+       *(DES_LONG *)((unsigned char *)des_SP+0x700+((t>>24L)&0xfc)); }
+#endif
+
+#else /* original version */
+
+#if defined(DES_RISC1) || defined(DES_RISC2)
+#ifdef DES_RISC1
+#define D_ENCRYPT(LL,R,S) {\
+       unsigned int u1,u2,u3; \
+       LOAD_DATA(R,S,u,t,E0,E1,u1); \
+       u>>=2L; \
+       t=ROTATE(t,6); \
+       u2=(int)u>>8L; \
+       u1=(int)u&0x3f; \
+       u2&=0x3f; \
+       u>>=16L; \
+       LL^=des_SPtrans[0][u1]; \
+       LL^=des_SPtrans[2][u2]; \
+       u3=(int)u>>8L; \
+       u1=(int)u&0x3f; \
+       u3&=0x3f; \
+       LL^=des_SPtrans[4][u1]; \
+       LL^=des_SPtrans[6][u3]; \
+       u2=(int)t>>8L; \
+       u1=(int)t&0x3f; \
+       u2&=0x3f; \
+       t>>=16L; \
+       LL^=des_SPtrans[1][u1]; \
+       LL^=des_SPtrans[3][u2]; \
+       u3=(int)t>>8L; \
+       u1=(int)t&0x3f; \
+       u3&=0x3f; \
+       LL^=des_SPtrans[5][u1]; \
+       LL^=des_SPtrans[7][u3]; }
+#endif
+#ifdef DES_RISC2
+#define D_ENCRYPT(LL,R,S) {\
+       unsigned int u1,u2,s1,s2; \
+       LOAD_DATA(R,S,u,t,E0,E1,u1); \
+       u>>=2L; \
+       t=ROTATE(t,6); \
+       u2=(int)u>>8L; \
+       u1=(int)u&0x3f; \
+       u2&=0x3f; \
+       LL^=des_SPtrans[0][u1]; \
+       LL^=des_SPtrans[2][u2]; \
+       s1=(int)u>>16L; \
+       s2=(int)u>>24L; \
+       s1&=0x3f; \
+       s2&=0x3f; \
+       LL^=des_SPtrans[4][s1]; \
+       LL^=des_SPtrans[6][s2]; \
+       u2=(int)t>>8L; \
+       u1=(int)t&0x3f; \
+       u2&=0x3f; \
+       LL^=des_SPtrans[1][u1]; \
+       LL^=des_SPtrans[3][u2]; \
+       s1=(int)t>>16; \
+       s2=(int)t>>24L; \
+       s1&=0x3f; \
+       s2&=0x3f; \
+       LL^=des_SPtrans[5][s1]; \
+       LL^=des_SPtrans[7][s2]; }
+#endif
+
+#else
+
+#define D_ENCRYPT(LL,R,S) {\
+       LOAD_DATA_tmp(R,S,u,t,E0,E1); \
+       t=ROTATE(t,4); \
+       LL^=\
+               des_SPtrans[0][(u>> 2L)&0x3f]^ \
+               des_SPtrans[2][(u>>10L)&0x3f]^ \
+               des_SPtrans[4][(u>>18L)&0x3f]^ \
+               des_SPtrans[6][(u>>26L)&0x3f]^ \
+               des_SPtrans[1][(t>> 2L)&0x3f]^ \
+               des_SPtrans[3][(t>>10L)&0x3f]^ \
+               des_SPtrans[5][(t>>18L)&0x3f]^ \
+               des_SPtrans[7][(t>>26L)&0x3f]; }
+#endif
+#endif
+
+       /* IP and FP
+        * The problem is more of a geometric problem that random bit fiddling.
+        0  1  2  3  4  5  6  7      62 54 46 38 30 22 14  6
+        8  9 10 11 12 13 14 15      60 52 44 36 28 20 12  4
+       16 17 18 19 20 21 22 23      58 50 42 34 26 18 10  2
+       24 25 26 27 28 29 30 31  to  56 48 40 32 24 16  8  0
+
+       32 33 34 35 36 37 38 39      63 55 47 39 31 23 15  7
+       40 41 42 43 44 45 46 47      61 53 45 37 29 21 13  5
+       48 49 50 51 52 53 54 55      59 51 43 35 27 19 11  3
+       56 57 58 59 60 61 62 63      57 49 41 33 25 17  9  1
+
+       The output has been subject to swaps of the form
+       0 1 -> 3 1 but the odd and even bits have been put into
+       2 3    2 0
+       different words.  The main trick is to remember that
+       t=((l>>size)^r)&(mask);
+       r^=t;
+       l^=(t<<size);
+       can be used to swap and move bits between words.
+
+       So l =  0  1  2  3  r = 16 17 18 19
+               4  5  6  7      20 21 22 23
+               8  9 10 11      24 25 26 27
+              12 13 14 15      28 29 30 31
+       becomes (for size == 2 and mask == 0x3333)
+          t =   2^16  3^17 -- --   l =  0  1 16 17  r =  2  3 18 19
+                6^20  7^21 -- --        4  5 20 21       6  7 22 23
+               10^24 11^25 -- --        8  9 24 25      10 11 24 25
+               14^28 15^29 -- --       12 13 28 29      14 15 28 29
+
+       Thanks for hints from Richard Outerbridge - he told me IP&FP
+       could be done in 15 xor, 10 shifts and 5 ands.
+       When I finally started to think of the problem in 2D
+       I first got ~42 operations without xors.  When I remembered
+       how to use xors :-) I got it to its final state.
+       */
+#define PERM_OP(a,b,t,n,m) ((t)=((((a)>>(n))^(b))&(m)),\
+       (b)^=(t),\
+       (a)^=((t)<<(n)))
+
+#define IP(l,r) \
+       { \
+       register DES_LONG tt; \
+       PERM_OP(r,l,tt, 4,0x0f0f0f0fL); \
+       PERM_OP(l,r,tt,16,0x0000ffffL); \
+       PERM_OP(r,l,tt, 2,0x33333333L); \
+       PERM_OP(l,r,tt, 8,0x00ff00ffL); \
+       PERM_OP(r,l,tt, 1,0x55555555L); \
+       }
+
+#define FP(l,r) \
+       { \
+       register DES_LONG tt; \
+       PERM_OP(l,r,tt, 1,0x55555555L); \
+       PERM_OP(r,l,tt, 8,0x00ff00ffL); \
+       PERM_OP(l,r,tt, 2,0x33333333L); \
+       PERM_OP(r,l,tt,16,0x0000ffffL); \
+       PERM_OP(l,r,tt, 4,0x0f0f0f0fL); \
+       }
+
+extern const DES_LONG des_SPtrans[8][64];
+
+#ifndef NOPROTO
+void fcrypt_body(DES_LONG *out,des_key_schedule ks,
+       DES_LONG Eswap0, DES_LONG Eswap1);
+#else
+void fcrypt_body();
+#endif
+
+#endif
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/des/des_ver.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,60 @@
+/* crypto/des/des_ver.h */
+/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+extern char *DES_version;      /* SSLeay version string */
+extern char *libdes_version;   /* old libdes version string */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/des/podd.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,75 @@
+/* crypto/des/podd.h */
+/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+static const unsigned char odd_parity[256]={
+  1,  1,  2,  2,  4,  4,  7,  7,  8,  8, 11, 11, 13, 13, 14, 14,
+ 16, 16, 19, 19, 21, 21, 22, 22, 25, 25, 26, 26, 28, 28, 31, 31,
+ 32, 32, 35, 35, 37, 37, 38, 38, 41, 41, 42, 42, 44, 44, 47, 47,
+ 49, 49, 50, 50, 52, 52, 55, 55, 56, 56, 59, 59, 61, 61, 62, 62,
+ 64, 64, 67, 67, 69, 69, 70, 70, 73, 73, 74, 74, 76, 76, 79, 79,
+ 81, 81, 82, 82, 84, 84, 87, 87, 88, 88, 91, 91, 93, 93, 94, 94,
+ 97, 97, 98, 98,100,100,103,103,104,104,107,107,109,109,110,110,
+112,112,115,115,117,117,118,118,121,121,122,122,124,124,127,127,
+128,128,131,131,133,133,134,134,137,137,138,138,140,140,143,143,
+145,145,146,146,148,148,151,151,152,152,155,155,157,157,158,158,
+161,161,162,162,164,164,167,167,168,168,171,171,173,173,174,174,
+176,176,179,179,181,181,182,182,185,185,186,186,188,188,191,191,
+193,193,194,194,196,196,199,199,200,200,203,203,205,205,206,206,
+208,208,211,211,213,213,214,214,217,217,218,218,220,220,223,223,
+224,224,227,227,229,229,230,230,233,233,234,234,236,236,239,239,
+241,241,242,242,244,244,247,247,248,248,251,251,253,253,254,254};
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/des/sk.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,204 @@
+/* crypto/des/sk.h */
+/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+static const DES_LONG des_skb[8][64]={
+{
+/* for C bits (numbered as per FIPS 46) 1 2 3 4 5 6 */
+0x00000000L,0x00000010L,0x20000000L,0x20000010L,
+0x00010000L,0x00010010L,0x20010000L,0x20010010L,
+0x00000800L,0x00000810L,0x20000800L,0x20000810L,
+0x00010800L,0x00010810L,0x20010800L,0x20010810L,
+0x00000020L,0x00000030L,0x20000020L,0x20000030L,
+0x00010020L,0x00010030L,0x20010020L,0x20010030L,
+0x00000820L,0x00000830L,0x20000820L,0x20000830L,
+0x00010820L,0x00010830L,0x20010820L,0x20010830L,
+0x00080000L,0x00080010L,0x20080000L,0x20080010L,
+0x00090000L,0x00090010L,0x20090000L,0x20090010L,
+0x00080800L,0x00080810L,0x20080800L,0x20080810L,
+0x00090800L,0x00090810L,0x20090800L,0x20090810L,
+0x00080020L,0x00080030L,0x20080020L,0x20080030L,
+0x00090020L,0x00090030L,0x20090020L,0x20090030L,
+0x00080820L,0x00080830L,0x20080820L,0x20080830L,
+0x00090820L,0x00090830L,0x20090820L,0x20090830L,
+},{
+/* for C bits (numbered as per FIPS 46) 7 8 10 11 12 13 */
+0x00000000L,0x02000000L,0x00002000L,0x02002000L,
+0x00200000L,0x02200000L,0x00202000L,0x02202000L,
+0x00000004L,0x02000004L,0x00002004L,0x02002004L,
+0x00200004L,0x02200004L,0x00202004L,0x02202004L,
+0x00000400L,0x02000400L,0x00002400L,0x02002400L,
+0x00200400L,0x02200400L,0x00202400L,0x02202400L,
+0x00000404L,0x02000404L,0x00002404L,0x02002404L,
+0x00200404L,0x02200404L,0x00202404L,0x02202404L,
+0x10000000L,0x12000000L,0x10002000L,0x12002000L,
+0x10200000L,0x12200000L,0x10202000L,0x12202000L,
+0x10000004L,0x12000004L,0x10002004L,0x12002004L,
+0x10200004L,0x12200004L,0x10202004L,0x12202004L,
+0x10000400L,0x12000400L,0x10002400L,0x12002400L,
+0x10200400L,0x12200400L,0x10202400L,0x12202400L,
+0x10000404L,0x12000404L,0x10002404L,0x12002404L,
+0x10200404L,0x12200404L,0x10202404L,0x12202404L,
+},{
+/* for C bits (numbered as per FIPS 46) 14 15 16 17 19 20 */
+0x00000000L,0x00000001L,0x00040000L,0x00040001L,
+0x01000000L,0x01000001L,0x01040000L,0x01040001L,
+0x00000002L,0x00000003L,0x00040002L,0x00040003L,
+0x01000002L,0x01000003L,0x01040002L,0x01040003L,
+0x00000200L,0x00000201L,0x00040200L,0x00040201L,
+0x01000200L,0x01000201L,0x01040200L,0x01040201L,
+0x00000202L,0x00000203L,0x00040202L,0x00040203L,
+0x01000202L,0x01000203L,0x01040202L,0x01040203L,
+0x08000000L,0x08000001L,0x08040000L,0x08040001L,
+0x09000000L,0x09000001L,0x09040000L,0x09040001L,
+0x08000002L,0x08000003L,0x08040002L,0x08040003L,
+0x09000002L,0x09000003L,0x09040002L,0x09040003L,
+0x08000200L,0x08000201L,0x08040200L,0x08040201L,
+0x09000200L,0x09000201L,0x09040200L,0x09040201L,
+0x08000202L,0x08000203L,0x08040202L,0x08040203L,
+0x09000202L,0x09000203L,0x09040202L,0x09040203L,
+},{
+/* for C bits (numbered as per FIPS 46) 21 23 24 26 27 28 */
+0x00000000L,0x00100000L,0x00000100L,0x00100100L,
+0x00000008L,0x00100008L,0x00000108L,0x00100108L,
+0x00001000L,0x00101000L,0x00001100L,0x00101100L,
+0x00001008L,0x00101008L,0x00001108L,0x00101108L,
+0x04000000L,0x04100000L,0x04000100L,0x04100100L,
+0x04000008L,0x04100008L,0x04000108L,0x04100108L,
+0x04001000L,0x04101000L,0x04001100L,0x04101100L,
+0x04001008L,0x04101008L,0x04001108L,0x04101108L,
+0x00020000L,0x00120000L,0x00020100L,0x00120100L,
+0x00020008L,0x00120008L,0x00020108L,0x00120108L,
+0x00021000L,0x00121000L,0x00021100L,0x00121100L,
+0x00021008L,0x00121008L,0x00021108L,0x00121108L,
+0x04020000L,0x04120000L,0x04020100L,0x04120100L,
+0x04020008L,0x04120008L,0x04020108L,0x04120108L,
+0x04021000L,0x04121000L,0x04021100L,0x04121100L,
+0x04021008L,0x04121008L,0x04021108L,0x04121108L,
+},{
+/* for D bits (numbered as per FIPS 46) 1 2 3 4 5 6 */
+0x00000000L,0x10000000L,0x00010000L,0x10010000L,
+0x00000004L,0x10000004L,0x00010004L,0x10010004L,
+0x20000000L,0x30000000L,0x20010000L,0x30010000L,
+0x20000004L,0x30000004L,0x20010004L,0x30010004L,
+0x00100000L,0x10100000L,0x00110000L,0x10110000L,
+0x00100004L,0x10100004L,0x00110004L,0x10110004L,
+0x20100000L,0x30100000L,0x20110000L,0x30110000L,
+0x20100004L,0x30100004L,0x20110004L,0x30110004L,
+0x00001000L,0x10001000L,0x00011000L,0x10011000L,
+0x00001004L,0x10001004L,0x00011004L,0x10011004L,
+0x20001000L,0x30001000L,0x20011000L,0x30011000L,
+0x20001004L,0x30001004L,0x20011004L,0x30011004L,
+0x00101000L,0x10101000L,0x00111000L,0x10111000L,
+0x00101004L,0x10101004L,0x00111004L,0x10111004L,
+0x20101000L,0x30101000L,0x20111000L,0x30111000L,
+0x20101004L,0x30101004L,0x20111004L,0x30111004L,
+},{
+/* for D bits (numbered as per FIPS 46) 8 9 11 12 13 14 */
+0x00000000L,0x08000000L,0x00000008L,0x08000008L,
+0x00000400L,0x08000400L,0x00000408L,0x08000408L,
+0x00020000L,0x08020000L,0x00020008L,0x08020008L,
+0x00020400L,0x08020400L,0x00020408L,0x08020408L,
+0x00000001L,0x08000001L,0x00000009L,0x08000009L,
+0x00000401L,0x08000401L,0x00000409L,0x08000409L,
+0x00020001L,0x08020001L,0x00020009L,0x08020009L,
+0x00020401L,0x08020401L,0x00020409L,0x08020409L,
+0x02000000L,0x0A000000L,0x02000008L,0x0A000008L,
+0x02000400L,0x0A000400L,0x02000408L,0x0A000408L,
+0x02020000L,0x0A020000L,0x02020008L,0x0A020008L,
+0x02020400L,0x0A020400L,0x02020408L,0x0A020408L,
+0x02000001L,0x0A000001L,0x02000009L,0x0A000009L,
+0x02000401L,0x0A000401L,0x02000409L,0x0A000409L,
+0x02020001L,0x0A020001L,0x02020009L,0x0A020009L,
+0x02020401L,0x0A020401L,0x02020409L,0x0A020409L,
+},{
+/* for D bits (numbered as per FIPS 46) 16 17 18 19 20 21 */
+0x00000000L,0x00000100L,0x00080000L,0x00080100L,
+0x01000000L,0x01000100L,0x01080000L,0x01080100L,
+0x00000010L,0x00000110L,0x00080010L,0x00080110L,
+0x01000010L,0x01000110L,0x01080010L,0x01080110L,
+0x00200000L,0x00200100L,0x00280000L,0x00280100L,
+0x01200000L,0x01200100L,0x01280000L,0x01280100L,
+0x00200010L,0x00200110L,0x00280010L,0x00280110L,
+0x01200010L,0x01200110L,0x01280010L,0x01280110L,
+0x00000200L,0x00000300L,0x00080200L,0x00080300L,
+0x01000200L,0x01000300L,0x01080200L,0x01080300L,
+0x00000210L,0x00000310L,0x00080210L,0x00080310L,
+0x01000210L,0x01000310L,0x01080210L,0x01080310L,
+0x00200200L,0x00200300L,0x00280200L,0x00280300L,
+0x01200200L,0x01200300L,0x01280200L,0x01280300L,
+0x00200210L,0x00200310L,0x00280210L,0x00280310L,
+0x01200210L,0x01200310L,0x01280210L,0x01280310L,
+},{
+/* for D bits (numbered as per FIPS 46) 22 23 24 25 27 28 */
+0x00000000L,0x04000000L,0x00040000L,0x04040000L,
+0x00000002L,0x04000002L,0x00040002L,0x04040002L,
+0x00002000L,0x04002000L,0x00042000L,0x04042000L,
+0x00002002L,0x04002002L,0x00042002L,0x04042002L,
+0x00000020L,0x04000020L,0x00040020L,0x04040020L,
+0x00000022L,0x04000022L,0x00040022L,0x04040022L,
+0x00002020L,0x04002020L,0x00042020L,0x04042020L,
+0x00002022L,0x04002022L,0x00042022L,0x04042022L,
+0x00000800L,0x04000800L,0x00040800L,0x04040800L,
+0x00000802L,0x04000802L,0x00040802L,0x04040802L,
+0x00002800L,0x04002800L,0x00042800L,0x04042800L,
+0x00002802L,0x04002802L,0x00042802L,0x04042802L,
+0x00000820L,0x04000820L,0x00040820L,0x04040820L,
+0x00000822L,0x04000822L,0x00040822L,0x04040822L,
+0x00002820L,0x04002820L,0x00042820L,0x04042820L,
+0x00002822L,0x04002822L,0x00042822L,0x04042822L,
+}};
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/des/spr.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,204 @@
+/* crypto/des/spr.h */
+/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+const DES_LONG des_SPtrans[8][64]={
+{
+/* nibble 0 */
+0x02080800L, 0x00080000L, 0x02000002L, 0x02080802L,
+0x02000000L, 0x00080802L, 0x00080002L, 0x02000002L,
+0x00080802L, 0x02080800L, 0x02080000L, 0x00000802L,
+0x02000802L, 0x02000000L, 0x00000000L, 0x00080002L,
+0x00080000L, 0x00000002L, 0x02000800L, 0x00080800L,
+0x02080802L, 0x02080000L, 0x00000802L, 0x02000800L,
+0x00000002L, 0x00000800L, 0x00080800L, 0x02080002L,
+0x00000800L, 0x02000802L, 0x02080002L, 0x00000000L,
+0x00000000L, 0x02080802L, 0x02000800L, 0x00080002L,
+0x02080800L, 0x00080000L, 0x00000802L, 0x02000800L,
+0x02080002L, 0x00000800L, 0x00080800L, 0x02000002L,
+0x00080802L, 0x00000002L, 0x02000002L, 0x02080000L,
+0x02080802L, 0x00080800L, 0x02080000L, 0x02000802L,
+0x02000000L, 0x00000802L, 0x00080002L, 0x00000000L,
+0x00080000L, 0x02000000L, 0x02000802L, 0x02080800L,
+0x00000002L, 0x02080002L, 0x00000800L, 0x00080802L,
+},{
+/* nibble 1 */
+0x40108010L, 0x00000000L, 0x00108000L, 0x40100000L,
+0x40000010L, 0x00008010L, 0x40008000L, 0x00108000L,
+0x00008000L, 0x40100010L, 0x00000010L, 0x40008000L,
+0x00100010L, 0x40108000L, 0x40100000L, 0x00000010L,
+0x00100000L, 0x40008010L, 0x40100010L, 0x00008000L,
+0x00108010L, 0x40000000L, 0x00000000L, 0x00100010L,
+0x40008010L, 0x00108010L, 0x40108000L, 0x40000010L,
+0x40000000L, 0x00100000L, 0x00008010L, 0x40108010L,
+0x00100010L, 0x40108000L, 0x40008000L, 0x00108010L,
+0x40108010L, 0x00100010L, 0x40000010L, 0x00000000L,
+0x40000000L, 0x00008010L, 0x00100000L, 0x40100010L,
+0x00008000L, 0x40000000L, 0x00108010L, 0x40008010L,
+0x40108000L, 0x00008000L, 0x00000000L, 0x40000010L,
+0x00000010L, 0x40108010L, 0x00108000L, 0x40100000L,
+0x40100010L, 0x00100000L, 0x00008010L, 0x40008000L,
+0x40008010L, 0x00000010L, 0x40100000L, 0x00108000L,
+},{
+/* nibble 2 */
+0x04000001L, 0x04040100L, 0x00000100L, 0x04000101L,
+0x00040001L, 0x04000000L, 0x04000101L, 0x00040100L,
+0x04000100L, 0x00040000L, 0x04040000L, 0x00000001L,
+0x04040101L, 0x00000101L, 0x00000001L, 0x04040001L,
+0x00000000L, 0x00040001L, 0x04040100L, 0x00000100L,
+0x00000101L, 0x04040101L, 0x00040000L, 0x04000001L,
+0x04040001L, 0x04000100L, 0x00040101L, 0x04040000L,
+0x00040100L, 0x00000000L, 0x04000000L, 0x00040101L,
+0x04040100L, 0x00000100L, 0x00000001L, 0x00040000L,
+0x00000101L, 0x00040001L, 0x04040000L, 0x04000101L,
+0x00000000L, 0x04040100L, 0x00040100L, 0x04040001L,
+0x00040001L, 0x04000000L, 0x04040101L, 0x00000001L,
+0x00040101L, 0x04000001L, 0x04000000L, 0x04040101L,
+0x00040000L, 0x04000100L, 0x04000101L, 0x00040100L,
+0x04000100L, 0x00000000L, 0x04040001L, 0x00000101L,
+0x04000001L, 0x00040101L, 0x00000100L, 0x04040000L,
+},{
+/* nibble 3 */
+0x00401008L, 0x10001000L, 0x00000008L, 0x10401008L,
+0x00000000L, 0x10400000L, 0x10001008L, 0x00400008L,
+0x10401000L, 0x10000008L, 0x10000000L, 0x00001008L,
+0x10000008L, 0x00401008L, 0x00400000L, 0x10000000L,
+0x10400008L, 0x00401000L, 0x00001000L, 0x00000008L,
+0x00401000L, 0x10001008L, 0x10400000L, 0x00001000L,
+0x00001008L, 0x00000000L, 0x00400008L, 0x10401000L,
+0x10001000L, 0x10400008L, 0x10401008L, 0x00400000L,
+0x10400008L, 0x00001008L, 0x00400000L, 0x10000008L,
+0x00401000L, 0x10001000L, 0x00000008L, 0x10400000L,
+0x10001008L, 0x00000000L, 0x00001000L, 0x00400008L,
+0x00000000L, 0x10400008L, 0x10401000L, 0x00001000L,
+0x10000000L, 0x10401008L, 0x00401008L, 0x00400000L,
+0x10401008L, 0x00000008L, 0x10001000L, 0x00401008L,
+0x00400008L, 0x00401000L, 0x10400000L, 0x10001008L,
+0x00001008L, 0x10000000L, 0x10000008L, 0x10401000L,
+},{
+/* nibble 4 */
+0x08000000L, 0x00010000L, 0x00000400L, 0x08010420L,
+0x08010020L, 0x08000400L, 0x00010420L, 0x08010000L,
+0x00010000L, 0x00000020L, 0x08000020L, 0x00010400L,
+0x08000420L, 0x08010020L, 0x08010400L, 0x00000000L,
+0x00010400L, 0x08000000L, 0x00010020L, 0x00000420L,
+0x08000400L, 0x00010420L, 0x00000000L, 0x08000020L,
+0x00000020L, 0x08000420L, 0x08010420L, 0x00010020L,
+0x08010000L, 0x00000400L, 0x00000420L, 0x08010400L,
+0x08010400L, 0x08000420L, 0x00010020L, 0x08010000L,
+0x00010000L, 0x00000020L, 0x08000020L, 0x08000400L,
+0x08000000L, 0x00010400L, 0x08010420L, 0x00000000L,
+0x00010420L, 0x08000000L, 0x00000400L, 0x00010020L,
+0x08000420L, 0x00000400L, 0x00000000L, 0x08010420L,
+0x08010020L, 0x08010400L, 0x00000420L, 0x00010000L,
+0x00010400L, 0x08010020L, 0x08000400L, 0x00000420L,
+0x00000020L, 0x00010420L, 0x08010000L, 0x08000020L,
+},{
+/* nibble 5 */
+0x80000040L, 0x00200040L, 0x00000000L, 0x80202000L,
+0x00200040L, 0x00002000L, 0x80002040L, 0x00200000L,
+0x00002040L, 0x80202040L, 0x00202000L, 0x80000000L,
+0x80002000L, 0x80000040L, 0x80200000L, 0x00202040L,
+0x00200000L, 0x80002040L, 0x80200040L, 0x00000000L,
+0x00002000L, 0x00000040L, 0x80202000L, 0x80200040L,
+0x80202040L, 0x80200000L, 0x80000000L, 0x00002040L,
+0x00000040L, 0x00202000L, 0x00202040L, 0x80002000L,
+0x00002040L, 0x80000000L, 0x80002000L, 0x00202040L,
+0x80202000L, 0x00200040L, 0x00000000L, 0x80002000L,
+0x80000000L, 0x00002000L, 0x80200040L, 0x00200000L,
+0x00200040L, 0x80202040L, 0x00202000L, 0x00000040L,
+0x80202040L, 0x00202000L, 0x00200000L, 0x80002040L,
+0x80000040L, 0x80200000L, 0x00202040L, 0x00000000L,
+0x00002000L, 0x80000040L, 0x80002040L, 0x80202000L,
+0x80200000L, 0x00002040L, 0x00000040L, 0x80200040L,
+},{
+/* nibble 6 */
+0x00004000L, 0x00000200L, 0x01000200L, 0x01000004L,
+0x01004204L, 0x00004004L, 0x00004200L, 0x00000000L,
+0x01000000L, 0x01000204L, 0x00000204L, 0x01004000L,
+0x00000004L, 0x01004200L, 0x01004000L, 0x00000204L,
+0x01000204L, 0x00004000L, 0x00004004L, 0x01004204L,
+0x00000000L, 0x01000200L, 0x01000004L, 0x00004200L,
+0x01004004L, 0x00004204L, 0x01004200L, 0x00000004L,
+0x00004204L, 0x01004004L, 0x00000200L, 0x01000000L,
+0x00004204L, 0x01004000L, 0x01004004L, 0x00000204L,
+0x00004000L, 0x00000200L, 0x01000000L, 0x01004004L,
+0x01000204L, 0x00004204L, 0x00004200L, 0x00000000L,
+0x00000200L, 0x01000004L, 0x00000004L, 0x01000200L,
+0x00000000L, 0x01000204L, 0x01000200L, 0x00004200L,
+0x00000204L, 0x00004000L, 0x01004204L, 0x01000000L,
+0x01004200L, 0x00000004L, 0x00004004L, 0x01004204L,
+0x01000004L, 0x01004200L, 0x01004000L, 0x00004004L,
+},{
+/* nibble 7 */
+0x20800080L, 0x20820000L, 0x00020080L, 0x00000000L,
+0x20020000L, 0x00800080L, 0x20800000L, 0x20820080L,
+0x00000080L, 0x20000000L, 0x00820000L, 0x00020080L,
+0x00820080L, 0x20020080L, 0x20000080L, 0x20800000L,
+0x00020000L, 0x00820080L, 0x00800080L, 0x20020000L,
+0x20820080L, 0x20000080L, 0x00000000L, 0x00820000L,
+0x20000000L, 0x00800000L, 0x20020080L, 0x20800080L,
+0x00800000L, 0x00020000L, 0x20820000L, 0x00000080L,
+0x00800000L, 0x00020000L, 0x20000080L, 0x20820080L,
+0x00020080L, 0x20000000L, 0x00000000L, 0x00820000L,
+0x20800080L, 0x20020080L, 0x20020000L, 0x00800080L,
+0x20820000L, 0x00000080L, 0x00800080L, 0x20020000L,
+0x20820080L, 0x00800000L, 0x20800000L, 0x20000080L,
+0x00820000L, 0x00020080L, 0x20020080L, 0x20800000L,
+0x00000080L, 0x20820000L, 0x00820080L, 0x00000000L,
+0x20000000L, 0x20800080L, 0x00020000L, 0x00820080L,
+}};
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/mast.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,33 @@
+struct mast_callbacks {
+  int (*packet_encap)(struct device *mast, void *context,
+                     struct sk_buff *skb, int flowref);
+  int (*link_inquire)(struct device *mast, void *context);
+};
+
+
+struct device *mast_init (int family,
+                         struct mast_callbacks *callbacks,
+                         unsigned int flags,
+                         unsigned int desired_unit,
+                         unsigned int max_flowref,
+                         void *context);
+
+int mast_destroy(struct device *mast);
+
+int mast_recv(struct device *mast, struct sk_buff *skb, int flowref);
+
+/* free this skb as being useless, increment failure count. */
+int mast_toast(struct device *mast, struct sk_buff *skb, int flowref);
+
+int mast_linkstat (struct device *mast, int flowref,
+                  int status);
+
+int mast_setreference (struct device *mast,
+                      int defaultSA);
+
+int mast_setneighbor (struct device *mast,
+                     struct sockaddr *source,
+                     struct sockaddr *destination,
+                     int flowref);
+
+
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/openswan.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,518 @@
+#ifndef _OPENSWAN_H
+/*
+ * header file for FreeS/WAN library functions
+ * Copyright (C) 1998, 1999, 2000  Henry Spencer.
+ * Copyright (C) 1999, 2000, 2001  Richard Guy Briggs
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id: openswan.h,v 1.93 2005-04-14 20:21:51 mcr Exp $
+ */
+#define        _OPENSWAN_H     /* seen it, no need to see it again */
+
+/* you'd think this should be builtin to compiler... */
+#ifndef TRUE
+#define TRUE 1
+#endif
+
+#ifndef FALSE
+#define FALSE 0
+#endif
+
+
+
+/*
+ * We've just got to have some datatypes defined...  And annoyingly, just
+ * where we get them depends on whether we're in userland or not.
+ */
+/* things that need to come from one place or the other, depending */
+#ifdef __KERNEL__
+#include <linux/types.h>
+#include <linux/socket.h>
+#include <linux/in.h>
+#include <linux/string.h>
+#include <linux/ctype.h>
+#define user_assert(foo)  /*nothing*/
+#else
+#include <sys/types.h>
+#include <netinet/in.h>
+#include <string.h>
+#include <ctype.h>
+#include <assert.h>
+#define user_assert(foo) assert(foo)
+#include <stdio.h>
+
+#  define uint8_t u_int8_t
+#  define uint16_t u_int16_t 
+#  define uint32_t u_int32_t 
+#  define uint64_t u_int64_t 
+
+
+#  define DEBUG_NO_STATIC static
+
+#endif
+
+#include <openswan/ipsec_param.h>
+
+
+/*
+ * Grab the kernel version to see if we have NET_21, and therefore 
+ * IPv6. Some of this is repeated from ipsec_kversions.h. Of course, 
+ * we aren't really testing if the kernel has IPv6, but rather if the
+ * the include files do.
+ */
+#include <linux/version.h>
+#ifndef KERNEL_VERSION
+#define KERNEL_VERSION(x,y,z) (((x)<<16)+((y)<<8)+(z))
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,0)
+#define NET_21
+#endif
+
+#ifndef IPPROTO_COMP
+#  define IPPROTO_COMP 108
+#endif /* !IPPROTO_COMP */
+
+#ifndef IPPROTO_INT
+#  define IPPROTO_INT 61
+#endif /* !IPPROTO_INT */
+
+#ifdef CONFIG_KLIPS_DEBUG
+#ifndef DEBUG_NO_STATIC
+#  define DEBUG_NO_STATIC
+#endif
+#else /* CONFIG_KLIPS_DEBUG */
+#ifndef DEBUG_NO_STATIC
+#  define DEBUG_NO_STATIC static
+#endif
+#endif /* CONFIG_KLIPS_DEBUG */
+
+#if !defined(ESPINUDP_WITH_NON_IKE)
+#define ESPINUDP_WITH_NON_IKE   1  /* draft-ietf-ipsec-nat-t-ike-00/01 */
+#define ESPINUDP_WITH_NON_ESP   2  /* draft-ietf-ipsec-nat-t-ike-02    */
+#endif
+
+/*
+ * Basic data types for the address-handling functions.
+ * ip_address and ip_subnet are supposed to be opaque types; do not
+ * use their definitions directly, they are subject to change!
+ */
+
+/* first, some quick fakes in case we're on an old system with no IPv6 */
+#ifndef s6_addr16
+struct in6_addr {
+       union 
+       {
+               __u8            u6_addr8[16];
+               __u16           u6_addr16[8];
+               __u32           u6_addr32[4];
+       } in6_u;
+#define s6_addr                        in6_u.u6_addr8
+#define s6_addr16              in6_u.u6_addr16
+#define s6_addr32              in6_u.u6_addr32
+};
+struct sockaddr_in6 {
+       unsigned short int      sin6_family;    /* AF_INET6 */
+       __u16                   sin6_port;      /* Transport layer port # */
+       __u32                   sin6_flowinfo;  /* IPv6 flow information */
+       struct in6_addr         sin6_addr;      /* IPv6 address */
+       __u32                   sin6_scope_id;  /* scope id (new in RFC2553) */
+};
+#endif /* !s6_addr16 */
+
+/* then the main types */
+typedef struct {
+       union {
+               struct sockaddr_in v4;
+               struct sockaddr_in6 v6;
+       } u;
+} ip_address;
+typedef struct {
+       ip_address addr;
+       int maskbits;
+} ip_subnet;
+
+/* and the SA ID stuff */
+#ifdef __KERNEL__
+typedef __u32 ipsec_spi_t;
+#else
+typedef u_int32_t ipsec_spi_t;
+#endif
+typedef struct {               /* to identify an SA, we need: */
+        ip_address dst;                /* A. destination host */
+        ipsec_spi_t spi;       /* B. 32-bit SPI, assigned by dest. host */
+#              define  SPI_PASS        256     /* magic values... */
+#              define  SPI_DROP        257     /* ...for use... */
+#              define  SPI_REJECT      258     /* ...with SA_INT */
+#              define  SPI_HOLD        259
+#              define  SPI_TRAP        260
+#              define  SPI_TRAPSUBNET  261
+       int proto;              /* C. protocol */
+#              define  SA_ESP  50      /* IPPROTO_ESP */
+#              define  SA_AH   51      /* IPPROTO_AH */
+#              define  SA_IPIP 4       /* IPPROTO_IPIP */
+#              define  SA_COMP 108     /* IPPROTO_COMP */
+#              define  SA_INT  61      /* IANA reserved for internal use */
+} ip_said;
+
+/* misc */
+typedef const char *err_t;     /* error message, or NULL for success */
+struct prng {                  /* pseudo-random-number-generator guts */
+       unsigned char sbox[256];
+       int i, j;
+       unsigned long count;
+};
+
+
+/*
+ * definitions for user space, taken from freeswan/ipsec_sa.h
+ */
+typedef uint32_t IPsecSAref_t;
+
+#define IPSEC_SA_REF_FIELD_WIDTH (8 * sizeof(IPsecSAref_t))
+
+#define IPsecSAref2NFmark(x) ((x) << (IPSEC_SA_REF_FIELD_WIDTH - IPSEC_SA_REF_TABLE_IDX_WIDTH))
+#define NFmark2IPsecSAref(x) ((x) >> (IPSEC_SA_REF_FIELD_WIDTH - IPSEC_SA_REF_TABLE_IDX_WIDTH))
+
+#define IPSEC_SAREF_NULL (~((IPsecSAref_t)0))
+
+/* GCC magic for use in function definitions! */
+#ifdef GCC_LINT
+# define PRINTF_LIKE(n) __attribute__ ((format(printf, n, n+1)))
+# define NEVER_RETURNS __attribute__ ((noreturn))
+# define UNUSED __attribute__ ((unused))
+# define BLANK_FORMAT " "      /* GCC_LINT whines about empty formats */
+#else
+# define PRINTF_LIKE(n)        /* ignore */
+# define NEVER_RETURNS /* ignore */
+# define UNUSED /* ignore */
+# define BLANK_FORMAT ""
+#endif
+
+
+
+
+
+/*
+ * new IPv6-compatible functions
+ */
+
+/* text conversions */
+err_t ttoul(const char *src, size_t srclen, int format, unsigned long *dst);
+size_t ultot(unsigned long src, int format, char *buf, size_t buflen);
+#define        ULTOT_BUF       (22+1)  /* holds 64 bits in octal */
+err_t ttoaddr(const char *src, size_t srclen, int af, ip_address *dst);
+err_t tnatoaddr(const char *src, size_t srclen, int af, ip_address *dst);
+size_t addrtot(const ip_address *src, int format, char *buf, size_t buflen);
+/* RFC 1886 old IPv6 reverse-lookup format is the bulkiest */
+#define        ADDRTOT_BUF     (32*2 + 3 + 1 + 3 + 1 + 1)
+err_t ttosubnet(const char *src, size_t srclen, int af, ip_subnet *dst);
+size_t subnettot(const ip_subnet *src, int format, char *buf, size_t buflen);
+#define        SUBNETTOT_BUF   (ADDRTOT_BUF + 1 + 3)
+size_t subnetporttot(const ip_subnet *src, int format, char *buf, size_t buflen);
+#define        SUBNETPROTOTOT_BUF      (SUBNETTOTO_BUF + ULTOT_BUF)
+err_t ttosa(const char *src, size_t srclen, ip_said *dst);
+size_t satot(const ip_said *src, int format, char *bufptr, size_t buflen);
+#define        SATOT_BUF       (5 + ULTOA_BUF + 1 + ADDRTOT_BUF)
+err_t ttodata(const char *src, size_t srclen, int base, char *buf,
+                                               size_t buflen, size_t *needed);
+err_t ttodatav(const char *src, size_t srclen, int base,
+              char *buf,  size_t buflen, size_t *needed,
+              char *errp, size_t errlen, unsigned int flags);
+#define        TTODATAV_BUF    40      /* ttodatav's largest non-literal message */
+#define TTODATAV_IGNORESPACE  (1<<1)  /* ignore spaces in base64 encodings*/
+#define TTODATAV_SPACECOUNTS  0       /* do not ignore spaces in base64   */
+
+size_t datatot(const char *src, size_t srclen, int format, char *buf,
+                                                               size_t buflen);
+size_t keyblobtoid(const unsigned char *src, size_t srclen, char *dst,
+                                                               size_t dstlen);
+size_t splitkeytoid(const unsigned char *e, size_t elen, const unsigned char *m,
+                                       size_t mlen, char *dst, size_t dstlen);
+#define        KEYID_BUF       10      /* up to 9 text digits plus NUL */
+err_t ttoprotoport(char *src, size_t src_len, u_int8_t *proto, u_int16_t *port,
+                                                       int *has_port_wildcard);
+
+/* initializations */
+void initsaid(const ip_address *addr, ipsec_spi_t spi, int proto, ip_said *dst);
+err_t loopbackaddr(int af, ip_address *dst);
+err_t unspecaddr(int af, ip_address *dst);
+err_t anyaddr(int af, ip_address *dst);
+err_t initaddr(const unsigned char *src, size_t srclen, int af, ip_address *dst);
+err_t initsubnet(const ip_address *addr, int maskbits, int clash, ip_subnet *dst);
+err_t addrtosubnet(const ip_address *addr, ip_subnet *dst);
+
+/* misc. conversions and related */
+err_t rangetosubnet(const ip_address *from, const ip_address *to, ip_subnet *dst);
+int addrtypeof(const ip_address *src);
+int subnettypeof(const ip_subnet *src);
+size_t addrlenof(const ip_address *src);
+size_t addrbytesptr(const ip_address *src, const unsigned char **dst);
+size_t addrbytesof(const ip_address *src, unsigned char *dst, size_t dstlen);
+int masktocount(const ip_address *src);
+void networkof(const ip_subnet *src, ip_address *dst);
+void maskof(const ip_subnet *src, ip_address *dst);
+
+/* tests */
+int sameaddr(const ip_address *a, const ip_address *b);
+int addrcmp(const ip_address *a, const ip_address *b);
+int samesubnet(const ip_subnet *a, const ip_subnet *b);
+int addrinsubnet(const ip_address *a, const ip_subnet *s);
+int subnetinsubnet(const ip_subnet *a, const ip_subnet *b);
+int subnetishost(const ip_subnet *s);
+int samesaid(const ip_said *a, const ip_said *b);
+int sameaddrtype(const ip_address *a, const ip_address *b);
+int samesubnettype(const ip_subnet *a, const ip_subnet *b);
+int isanyaddr(const ip_address *src);
+int isunspecaddr(const ip_address *src);
+int isloopbackaddr(const ip_address *src);
+
+/* low-level grot */
+int portof(const ip_address *src);
+void setportof(int port, ip_address *dst);
+struct sockaddr *sockaddrof(ip_address *src);
+size_t sockaddrlenof(const ip_address *src);
+
+/* PRNG */
+void prng_init(struct prng *prng, const unsigned char *key, size_t keylen);
+void prng_bytes(struct prng *prng, unsigned char *dst, size_t dstlen);
+unsigned long prng_count(struct prng *prng);
+void prng_final(struct prng *prng);
+
+/* odds and ends */
+const char *ipsec_version_code(void);
+const char *ipsec_version_string(void);
+const char **ipsec_copyright_notice(void);
+
+const char *dns_string_rr(int rr, char *buf, int bufsize);
+const char *dns_string_datetime(time_t seconds,
+                               char *buf,
+                               int bufsize);
+
+
+/*
+ * old functions, to be deleted eventually
+ */
+
+/* unsigned long */
+const char *                   /* NULL for success, else string literal */
+atoul(
+       const char *src,
+       size_t srclen,          /* 0 means strlen(src) */
+       int base,               /* 0 means figure it out */
+       unsigned long *resultp
+);
+size_t                         /* space needed for full conversion */
+ultoa(
+       unsigned long n,
+       int base,
+       char *dst,
+       size_t dstlen
+);
+#define        ULTOA_BUF       21      /* just large enough for largest result, */
+                               /* assuming 64-bit unsigned long! */
+
+/* Internet addresses */
+const char *                   /* NULL for success, else string literal */
+atoaddr(
+       const char *src,
+       size_t srclen,          /* 0 means strlen(src) */
+       struct in_addr *addr
+);
+size_t                         /* space needed for full conversion */
+addrtoa(
+       struct in_addr addr,
+       int format,             /* character; 0 means default */
+       char *dst,
+       size_t dstlen
+);
+#define        ADDRTOA_BUF     16      /* just large enough for largest result */
+
+/* subnets */
+const char *                   /* NULL for success, else string literal */
+atosubnet(
+       const char *src,
+       size_t srclen,          /* 0 means strlen(src) */
+       struct in_addr *addr,
+       struct in_addr *mask
+);
+size_t                         /* space needed for full conversion */
+subnettoa(
+       struct in_addr addr,
+       struct in_addr mask,
+       int format,             /* character; 0 means default */
+       char *dst,
+       size_t dstlen
+);
+#define        SUBNETTOA_BUF   32      /* large enough for worst case result */
+
+/* ranges */
+const char *                   /* NULL for success, else string literal */
+atoasr(
+       const char *src,
+       size_t srclen,          /* 0 means strlen(src) */
+       char *type,             /* 'a', 's', 'r' */
+       struct in_addr *addrs   /* two-element array */
+);
+size_t                         /* space needed for full conversion */
+rangetoa(
+       struct in_addr *addrs,  /* two-element array */
+       int format,             /* character; 0 means default */
+       char *dst,
+       size_t dstlen
+);
+#define        RANGETOA_BUF    34      /* large enough for worst case result */
+
+/* data types for SA conversion functions */
+
+/* generic data, e.g. keys */
+const char *                   /* NULL for success, else string literal */
+atobytes(
+       const char *src,
+       size_t srclen,          /* 0 means strlen(src) */
+       char *dst,
+       size_t dstlen,
+       size_t *lenp            /* NULL means don't bother telling me */
+);
+size_t                         /* 0 failure, else true size */
+bytestoa(
+       const char *src,
+       size_t srclen,
+       int format,             /* character; 0 means default */
+       char *dst,
+       size_t dstlen
+);
+
+/* old versions of generic-data functions; deprecated */
+size_t                         /* 0 failure, else true size */
+atodata(
+       const char *src,
+       size_t srclen,          /* 0 means strlen(src) */
+       char *dst,
+       size_t dstlen
+);
+size_t                         /* 0 failure, else true size */
+datatoa(
+       const char *src,
+       size_t srclen,
+       int format,             /* character; 0 means default */
+       char *dst,
+       size_t dstlen
+);
+
+/* part extraction and special addresses */
+struct in_addr
+subnetof(
+       struct in_addr addr,
+       struct in_addr mask
+);
+struct in_addr
+hostof(
+       struct in_addr addr,
+       struct in_addr mask
+);
+struct in_addr
+broadcastof(
+       struct in_addr addr,
+       struct in_addr mask
+);
+
+/* mask handling */
+int
+goodmask(
+       struct in_addr mask
+);
+int
+masktobits(
+       struct in_addr mask
+);
+struct in_addr
+bitstomask(
+       int n
+);
+
+
+
+/*
+ * general utilities
+ */
+
+#ifndef __KERNEL__
+/* option pickup from files (userland only because of use of FILE) */
+const char *optionsfrom(const char *filename, int *argcp, char ***argvp,
+                                               int optind, FILE *errorreport);
+
+/* sanitize a string */
+extern size_t sanitize_string(char *buf, size_t size);
+
+#endif
+
+
+/*
+ * ENUM of klips debugging values. Not currently used in klips.
+ * debug flag is actually 32 -bits, but only one bit is ever used,
+ * so we can actually pack it all into a single 32-bit word.
+ */
+enum klips_debug_flags {
+    KDF_VERBOSE     = 0,
+    KDF_XMIT        = 1,
+    KDF_NETLINK     = 2, /* obsolete */
+    KDF_XFORM       = 3,
+    KDF_EROUTE      = 4,
+    KDF_SPI         = 5,
+    KDF_RADIJ       = 6,
+    KDF_ESP         = 7,
+    KDF_AH          = 8, /* obsolete */
+    KDF_RCV         = 9,
+    KDF_TUNNEL      = 10,
+    KDF_PFKEY       = 11,
+    KDF_COMP        = 12
+};
+
+
+/*
+ * Debugging levels for pfkey_lib_debug
+ */
+#define PF_KEY_DEBUG_PARSE_NONE    0
+#define PF_KEY_DEBUG_PARSE_PROBLEM 1
+#define PF_KEY_DEBUG_PARSE_STRUCT  2
+#define PF_KEY_DEBUG_PARSE_FLOW    4
+#define PF_KEY_DEBUG_BUILD         8
+#define PF_KEY_DEBUG_PARSE_MAX    15
+
+extern unsigned int pfkey_lib_debug;  /* bits selecting what to report */
+
+/*
+ * pluto and lwdnsq need to know the maximum size of the commands to,
+ * and replies from lwdnsq. 
+ */
+
+#define LWDNSQ_CMDBUF_LEN      1024
+#define LWDNSQ_RESULT_LEN_MAX  4096
+
+
+/* syntax for passthrough SA */
+#ifndef PASSTHROUGHNAME
+#define        PASSTHROUGHNAME "%passthrough"
+#define        PASSTHROUGH4NAME        "%passthrough4"
+#define        PASSTHROUGH6NAME        "%passthrough6"
+#define        PASSTHROUGHIS   "tun0@0.0.0.0"
+#define        PASSTHROUGH4IS  "tun0@0.0.0.0"
+#define        PASSTHROUGH6IS  "tun0@::"
+#define        PASSTHROUGHTYPE "tun"
+#define        PASSTHROUGHSPI  0
+#define        PASSTHROUGHDST  0
+#endif
+
+
+
+#endif /* _OPENSWAN_H */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/openswan/ipcomp.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,61 @@
+/*
+ * IPCOMP zlib interface code.
+ * Copyright (C) 2000  Svenning Soerensen <svenning@post5.tele.dk>
+ * Copyright (C) 2000, 2001  Richard Guy Briggs <rgb@conscoop.ottawa.on.ca>
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+
+ RCSID $Id: ipcomp.h,v 1.14 2004-07-10 19:08:41 mcr Exp $
+
+ */
+
+/* SSS */
+
+#ifndef _IPCOMP_H
+#define _IPCOMP_H
+
+/* Prefix all global deflate symbols with "ipcomp_" to avoid collisions with ppp_deflate & ext2comp */
+#ifndef IPCOMP_PREFIX
+#define IPCOMP_PREFIX
+#endif /* IPCOMP_PREFIX */
+
+#ifndef IPPROTO_COMP
+#define IPPROTO_COMP 108
+#endif /* IPPROTO_COMP */
+
+#ifdef CONFIG_KLIPS_DEBUG
+extern int sysctl_ipsec_debug_ipcomp;
+#endif /* CONFIG_KLIPS_DEBUG */
+
+struct ipcomphdr {                     /* IPCOMP header */
+    __u8    ipcomp_nh;         /* Next header (protocol) */
+    __u8    ipcomp_flags;      /* Reserved, must be 0 */
+    __u16   ipcomp_cpi;                /* Compression Parameter Index */
+};
+
+extern struct inet_protocol comp_protocol;
+extern int sysctl_ipsec_debug_ipcomp;
+
+#define IPCOMP_UNCOMPRESSABLE     0x000000001
+#define IPCOMP_COMPRESSIONERROR   0x000000002
+#define IPCOMP_PARMERROR          0x000000004
+#define IPCOMP_DECOMPRESSIONERROR 0x000000008
+
+#define IPCOMP_ADAPT_INITIAL_TRIES     8
+#define IPCOMP_ADAPT_INITIAL_SKIP      4
+#define IPCOMP_ADAPT_SUBSEQ_TRIES      2
+#define IPCOMP_ADAPT_SUBSEQ_SKIP       8
+
+/* Function prototypes */
+struct sk_buff *skb_compress(struct sk_buff *skb, struct ipsec_sa *ips, unsigned int *flags);
+struct sk_buff *skb_decompress(struct sk_buff *skb, struct ipsec_sa *ips, unsigned int *flags);
+
+#endif /* _IPCOMP_H */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/openswan/ipsec_ah.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,200 @@
+/*
+ * Authentication Header declarations
+ * Copyright (C) 1996, 1997  John Ioannidis.
+ * Copyright (C) 1998, 1999, 2000, 2001  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id: ipsec_ah.h,v 1.26 2004-09-13 02:22:10 mcr Exp $
+ */
+
+#include "ipsec_md5h.h"
+#include "ipsec_sha1.h"
+
+#ifndef IPPROTO_AH
+#define IPPROTO_AH 51
+#endif /* IPPROTO_AH */
+
+#include "ipsec_auth.h"
+
+#ifdef __KERNEL__
+
+extern struct inet_protocol ah_protocol;
+
+struct options;
+
+struct ahhdr                           /* Generic AH header */
+{
+       __u8    ah_nh;                  /* Next header (protocol) */
+       __u8    ah_hl;                  /* AH length, in 32-bit words */
+       __u16   ah_rv;                  /* reserved, must be 0 */
+       __u32   ah_spi;                 /* Security Parameters Index */
+        __u32   ah_rpl;                 /* Replay prevention */
+       __u8    ah_data[AHHMAC_HASHLEN];/* Authentication hash */
+};
+#define AH_BASIC_LEN 8      /* basic AH header is 8 bytes, nh,hl,rv,spi
+                            * and the ah_hl, says how many bytes after that
+                            * to cover. */
+
+extern struct xform_functions ah_xform_funcs[];
+
+#ifdef CONFIG_KLIPS_DEBUG
+extern int debug_ah;
+#endif /* CONFIG_KLIPS_DEBUG */
+#endif /* __KERNEL__ */
+
+/*
+ * $Log: ipsec_ah.h,v $
+ * Revision 1.26  2004-09-13 02:22:10  mcr
+ *     #define inet_protocol if necessary.
+ *
+ * Revision 1.25  2004/09/06 18:35:41  mcr
+ *     2.6.8.1 gets rid of inet_protocol->net_protocol compatibility,
+ *     so adjust for that.
+ *
+ * Revision 1.24  2004/07/10 19:08:41  mcr
+ *     CONFIG_IPSEC -> CONFIG_KLIPS.
+ *
+ * Revision 1.23  2004/04/05 19:55:04  mcr
+ * Moved from linux/include/freeswan/ipsec_ah.h,v
+ *
+ * Revision 1.22  2004/04/05 19:41:05  mcr
+ *     merged alg-branch code.
+ *
+ * Revision 1.21  2003/12/13 19:10:16  mcr
+ *     refactored rcv and xmit code - same as FS 2.05.
+ *
+ * Revision 1.22  2003/12/11 20:14:58  mcr
+ *     refactored the xmit code, to move all encapsulation
+ *     code into protocol functions. Note that all functions
+ *     are essentially done by a single function, which is probably
+ *     wrong.
+ *     the rcv_functions structures are renamed xform_functions.
+ *
+ * Revision 1.21  2003/12/06 21:21:19  mcr
+ *     split up receive path into per-transform files, for
+ *     easier later removal.
+ *
+ * Revision 1.20.8.1  2003/12/22 15:25:52  jjo
+ *      Merged algo-0.8.1-rc11-test1 into alg-branch
+ *
+ * Revision 1.20  2003/02/06 02:21:34  rgb
+ *
+ * Moved "struct auth_alg" from ipsec_rcv.c to ipsec_ah.h .
+ * Changed "struct ah" to "struct ahhdr" and "struct esp" to "struct esphdr".
+ * Removed "#ifdef INBOUND_POLICY_CHECK_eroute" dead code.
+ *
+ * Revision 1.19  2002/09/16 21:19:13  mcr
+ *     fixes for west-ah-icmp-01 - length of AH header must be
+ *     calculated properly, and next_header field properly copied.
+ *
+ * Revision 1.18  2002/05/14 02:37:02  rgb
+ * Change reference from _TDB to _IPSA.
+ *
+ * Revision 1.17  2002/04/24 07:36:46  mcr
+ * Moved from ./klips/net/ipsec/ipsec_ah.h,v
+ *
+ * Revision 1.16  2002/02/20 01:27:06  rgb
+ * Ditched a pile of structs only used by the old Netlink interface.
+ *
+ * Revision 1.15  2001/12/11 02:35:57  rgb
+ * Change "struct net_device" to "struct device" for 2.2 compatibility.
+ *
+ * Revision 1.14  2001/11/26 09:23:47  rgb
+ * Merge MCR's ipsec_sa, eroute, proc and struct lifetime changes.
+ *
+ * Revision 1.13.2.1  2001/09/25 02:18:24  mcr
+ *     replace "struct device" with "struct netdevice"
+ *
+ * Revision 1.13  2001/06/14 19:35:08  rgb
+ * Update copyright date.
+ *
+ * Revision 1.12  2000/09/12 03:21:20  rgb
+ * Cleared out unused htonq.
+ *
+ * Revision 1.11  2000/09/08 19:12:55  rgb
+ * Change references from DEBUG_IPSEC to CONFIG_IPSEC_DEBUG.
+ *
+ * Revision 1.10  2000/01/21 06:13:10  rgb
+ * Tidied up spacing.
+ * Added macros for HMAC padding magic numbers.(kravietz)
+ *
+ * Revision 1.9  1999/12/07 18:16:23  rgb
+ * Fixed comments at end of #endif lines.
+ *
+ * Revision 1.8  1999/04/11 00:28:56  henry
+ * GPL boilerplate
+ *
+ * Revision 1.7  1999/04/06 04:54:25  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.6  1999/01/26 02:06:01  rgb
+ * Removed CONFIG_IPSEC_ALGO_SWITCH macro.
+ *
+ * Revision 1.5  1999/01/22 06:17:49  rgb
+ * Updated macro comments.
+ * Added context types to support algorithm switch code.
+ * 64-bit clean-up -- converting 'u long long' to __u64.
+ *
+ * Revision 1.4  1998/07/14 15:54:56  rgb
+ * Add #ifdef __KERNEL__ to protect kernel-only structures.
+ *
+ * Revision 1.3  1998/06/30 18:05:16  rgb
+ * Comment out references to htonq.
+ *
+ * Revision 1.2  1998/06/25 19:33:46  rgb
+ * Add prototype for protocol receive function.
+ * Rearrange for more logical layout.
+ *
+ * Revision 1.1  1998/06/18 21:27:43  henry
+ * move sources from klips/src to klips/net/ipsec, to keep stupid
+ * kernel-build scripts happier in the presence of symlinks
+ *
+ * Revision 1.4  1998/05/18 22:28:43  rgb
+ * Disable key printing facilities from /proc/net/ipsec_*.
+ *
+ * Revision 1.3  1998/04/21 21:29:07  rgb
+ * Rearrange debug switches to change on the fly debug output from user
+ * space.  Only kernel changes checked in at this time.  radij.c was also
+ * changed to temporarily remove buggy debugging code in rj_delete causing
+ * an OOPS and hence, netlink device open errors.
+ *
+ * Revision 1.2  1998/04/12 22:03:17  rgb
+ * Updated ESP-3DES-HMAC-MD5-96,
+ *     ESP-DES-HMAC-MD5-96,
+ *     AH-HMAC-MD5-96,
+ *     AH-HMAC-SHA1-96 since Henry started freeswan cvs repository
+ * from old standards (RFC182[5-9] to new (as of March 1998) drafts.
+ *
+ * Fixed eroute references in /proc/net/ipsec*.
+ *
+ * Started to patch module unloading memory leaks in ipsec_netlink and
+ * radij tree unloading.
+ *
+ * Revision 1.1  1998/04/09 03:05:55  henry
+ * sources moved up from linux/net/ipsec
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:02  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.4  1997/01/15 01:28:15  ji
+ * Added definitions for new AH transforms.
+ *
+ * Revision 0.3  1996/11/20 14:35:48  ji
+ * Minor Cleanup.
+ * Rationalized debugging code.
+ *
+ * Revision 0.2  1996/11/02 00:18:33  ji
+ * First limited release.
+ *
+ *
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/openswan/ipsec_alg.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,248 @@
+/*
+ * Modular extensions service and registration functions interface
+ *
+ * Author: JuanJo Ciarlante <jjo-ipsec@mendoza.gov.ar>
+ *
+ * ipsec_alg.h,v 1.1.2.1 2003/11/21 18:12:23 jjo Exp
+ *
+ */
+/*
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ */
+#ifndef IPSEC_ALG_H
+#define IPSEC_ALG_H
+
+/* 
+ *   gcc >= 3.2 has removed __FUNCTION__, replaced by C99 __func__
+ *   *BUT* its a compiler variable.
+ */
+#if (__GNUC__ >= 3)
+#ifndef __FUNCTION__
+#define __FUNCTION__ __func__
+#endif
+#endif
+
+/*     Version 0.8.1-0 */
+#define IPSEC_ALG_VERSION      0x00080100
+
+#include <linux/types.h>
+#include <linux/list.h>
+#include <asm/atomic.h>
+#include <pfkey.h>
+
+/*     
+ *     The following structs are used via pointers in ipsec_alg object to
+ *     avoid ipsec_alg.h coupling with freeswan headers, thus simplifying
+ *     module development
+ */
+struct ipsec_sa;
+struct esp;
+
+/**************************************
+ *
+ *     Main registration object 
+ *
+ *************************************/
+#define IPSEC_ALG_VERSION_QUAD(v)      \
+       (v>>24),((v>>16)&0xff),((v>>8)&0xff),(v&0xff)
+/*     
+ *     Main ipsec_alg objects: "OOPrograming wannabe"
+ *     Hierachy (carefully handled with _minimal_ cast'ing):
+ *
+ *      ipsec_alg+
+ *              +->ipsec_alg_enc  (ixt_alg_type=SADB_EXT_SUPPORTED_ENCRYPT)
+ *              +->ipsec_alg_auth (ixt_alg_type=SADB_EXT_SUPPORTED_AUTH)
+ */
+
+/***************************************************************
+ *
+ *     INTERFACE object: struct ipsec_alg
+ *
+ ***************************************************************/
+
+#define ixt_alg_type ixt_support.ias_exttype
+#define ixt_alg_id   ixt_support.ias_id
+
+#define IPSEC_ALG_ST_SUPP      0x01
+#define IPSEC_ALG_ST_REGISTERED 0x02
+#define IPSEC_ALG_ST_EXCL      0x04
+struct ipsec_alg {
+       unsigned ixt_version;   /* only allow this version (or 'near')*/ \
+       struct list_head ixt_list;      /* dlinked list */ \
+       struct module *ixt_module;      /* THIS_MODULE */ \
+       unsigned ixt_state;             /* state flags */ \
+       atomic_t ixt_refcnt;    /* ref. count when pointed from ipsec_sa */ \
+       char ixt_name[16];      /* descriptive short name, eg. "3des" */ \
+       void *ixt_data;         /* private for algo implementation */ \
+       uint8_t  ixt_blocksize; /* blocksize in bytes */ \
+
+       struct ipsec_alg_supported ixt_support;
+};
+/* 
+ *     Note the const in cbc_encrypt IV arg:
+ *     some ciphers like to toast passed IV (eg. 3DES): make a local IV copy
+ */
+struct ipsec_alg_enc {
+       struct ipsec_alg ixt_common;
+       unsigned ixt_e_keylen;          /* raw key length in bytes          */
+       unsigned ixt_e_ctx_size;        /* sa_p->key_e_size */
+       int (*ixt_e_set_key)(struct ipsec_alg_enc *alg, __u8 *key_e, const __u8 *key, size_t keysize);
+       __u8 *(*ixt_e_new_key)(struct ipsec_alg_enc *alg, const __u8 *key, size_t keysize);
+       void (*ixt_e_destroy_key)(struct ipsec_alg_enc *alg, __u8 *key_e);
+       int (*ixt_e_cbc_encrypt)(struct ipsec_alg_enc *alg, __u8 *key_e, __u8 *in, int ilen, const __u8 *iv, int encrypt);
+};
+struct ipsec_alg_auth {
+       struct ipsec_alg ixt_common;
+       unsigned ixt_a_keylen;          /* raw key length in bytes          */
+       unsigned ixt_a_ctx_size;        /* sa_p->key_a_size */
+       unsigned ixt_a_authlen;         /* 'natural' auth. hash len (bytes) */
+       int (*ixt_a_hmac_set_key)(struct ipsec_alg_auth *alg, __u8 *key_a, const __u8 *key, int keylen);
+       int (*ixt_a_hmac_hash)(struct ipsec_alg_auth *alg, __u8 *key_a, const __u8 *dat, int len, __u8 *hash, int hashlen);
+};
+/*     
+ *     These are _copies_ of SADB_EXT_SUPPORTED_{AUTH,ENCRYPT}, 
+ *     to avoid header coupling for true constants
+ *     about headers ... "cp is your friend" --Linus
+ */
+#define IPSEC_ALG_TYPE_AUTH    14
+#define IPSEC_ALG_TYPE_ENCRYPT 15
+
+/***************************************************************
+ *
+ *     INTERFACE for module loading,testing, and unloading
+ *
+ ***************************************************************/
+/*     -  registration calls   */
+int register_ipsec_alg(struct ipsec_alg *);
+int unregister_ipsec_alg(struct ipsec_alg *);
+/*     -  optional (simple test) for algos     */
+int ipsec_alg_test(unsigned alg_type, unsigned alg_id, int testparm);
+/*     inline wrappers (usefull for type validation */
+static inline int register_ipsec_alg_enc(struct ipsec_alg_enc *ixt) {
+       return register_ipsec_alg((struct ipsec_alg*)ixt);
+}
+static inline int unregister_ipsec_alg_enc(struct ipsec_alg_enc *ixt) {
+       return unregister_ipsec_alg((struct ipsec_alg*)ixt);
+}
+static inline int register_ipsec_alg_auth(struct ipsec_alg_auth *ixt) {
+       return register_ipsec_alg((struct ipsec_alg*)ixt);
+}
+static inline int unregister_ipsec_alg_auth(struct ipsec_alg_auth *ixt) {
+       return unregister_ipsec_alg((struct ipsec_alg*)ixt);
+}
+
+/*****************************************************************
+ *
+ *     INTERFACE for ENC services: key creation, encrypt function
+ *
+ *****************************************************************/
+
+#define IPSEC_ALG_ENCRYPT 1
+#define IPSEC_ALG_DECRYPT 0
+
+/*     encryption key context creation function */
+int ipsec_alg_enc_key_create(struct ipsec_sa *sa_p);
+/* 
+ *     ipsec_alg_esp_encrypt(): encrypt ilen bytes in idat returns
+ *     0 or ERR<0
+ */
+int ipsec_alg_esp_encrypt(struct ipsec_sa *sa_p, __u8 *idat, int ilen, const __u8 *iv, int action);
+
+/***************************************************************
+ *
+ *     INTERFACE for AUTH services: key creation, hash functions
+ *
+ ***************************************************************/
+int ipsec_alg_auth_key_create(struct ipsec_sa *sa_p);
+int ipsec_alg_sa_esp_hash(const struct ipsec_sa *sa_p, const __u8 *espp, int len, __u8 *hash, int hashlen) ;
+#define ipsec_alg_sa_esp_update(c,k,l) ipsec_alg_sa_esp_hash(c,k,l,NULL,0)
+
+/* only called from ipsec_init.c */
+int ipsec_alg_init(void);
+
+/* algo module glue for static algos */
+void ipsec_alg_static_init(void);
+typedef int (*ipsec_alg_init_func_t) (void);
+
+/**********************************************
+ *
+ *     INTERFACE for ipsec_sa init and wipe
+ *
+ **********************************************/
+
+/* returns true if ipsec_sa has ipsec_alg obj attached */
+/* 
+ * Initializes ipsec_sa's ipsec_alg object, using already loaded
+ * proto, authalg, encalg.; links ipsec_alg objects (enc, auth)
+ */
+int ipsec_alg_sa_init(struct ipsec_sa *sa_p);
+/* 
+ * Destroys ipsec_sa's ipsec_alg object
+ * unlinking ipsec_alg objects
+ */
+int ipsec_alg_sa_wipe(struct ipsec_sa *sa_p);
+
+#define IPSEC_ALG_MODULE_INIT_MOD( func_name ) \
+       static int func_name(void);             \
+       module_init(func_name);                 \
+       static int __init func_name(void)
+#define IPSEC_ALG_MODULE_EXIT_MOD( func_name ) \
+       static void func_name(void);            \
+       module_exit(func_name);                 \
+       static void __exit func_name(void)
+
+#define IPSEC_ALG_MODULE_INIT_STATIC( func_name )      \
+       extern int func_name(void);             \
+       int func_name(void)
+#define IPSEC_ALG_MODULE_EXIT_STATIC( func_name )      \
+       extern void func_name(void);            \
+       void func_name(void)
+
+/**********************************************
+ *
+ *     2.2 backport for some 2.4 useful module stuff
+ *
+ **********************************************/
+#ifdef MODULE
+#ifndef THIS_MODULE
+#define THIS_MODULE          (&__this_module)
+#endif
+#ifndef module_init
+typedef int (*__init_module_func_t)(void);
+typedef void (*__cleanup_module_func_t)(void);
+
+#define module_init(x) \
+        int init_module(void) __attribute__((alias(#x))); \
+        static inline __init_module_func_t __init_module_inline(void) \
+        { return x; }
+#define module_exit(x) \
+        void cleanup_module(void) __attribute__((alias(#x))); \
+        static inline __cleanup_module_func_t __cleanup_module_inline(void) \
+        { return x; }
+#endif
+#define IPSEC_ALG_MODULE_INIT( func_name )     IPSEC_ALG_MODULE_INIT_MOD( func_name )  
+#define IPSEC_ALG_MODULE_EXIT( func_name )     IPSEC_ALG_MODULE_EXIT_MOD( func_name )
+
+#else  /* not MODULE */
+#ifndef THIS_MODULE
+#define THIS_MODULE          NULL
+#endif
+/*     
+ *     I only want module_init() magic 
+ *     when algo.c file *is THE MODULE*, in all other
+ *     cases, initialization is called explicitely from ipsec_alg_init()
+ */
+#define IPSEC_ALG_MODULE_INIT( func_name )      IPSEC_ALG_MODULE_INIT_STATIC(func_name)
+#define IPSEC_ALG_MODULE_EXIT( func_name )     IPSEC_ALG_MODULE_EXIT_STATIC(func_name)
+#endif
+
+#endif /* IPSEC_ALG_H */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/openswan/ipsec_alg_3des.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,12 @@
+struct TripleDES_context {
+  des_key_schedule s1;
+  des_key_schedule s2;
+  des_key_schedule s3;
+};
+typedef struct TripleDES_context TripleDES_context;
+
+#define ESP_3DES_KEY_SZ        3*(sizeof(des_cblock))
+#define ESP_3DES_CBC_BLK_LEN    8
+
+
+
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/openswan/ipsec_auth.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,100 @@
+/*
+ * Authentication Header declarations
+ * Copyright (C) 2003 Michael Richardson <mcr@sandelman.ottawa.on.ca>
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id: ipsec_auth.h,v 1.3 2004-04-06 02:49:08 mcr Exp $
+ */
+
+#include "ipsec_md5h.h"
+#include "ipsec_sha1.h"
+
+#ifndef IPSEC_AUTH_H
+#define IPSEC_AUTH_H
+
+#define AH_FLENGTH             12              /* size of fixed part */
+#define AHMD5_KMAX             64              /* MD5 max 512 bits key */
+#define AHMD5_AMAX             12              /* MD5 96 bits of authenticator */
+
+#define AHMD596_KLEN           16              /* MD5 128 bits key */
+#define AHSHA196_KLEN          20              /* SHA1 160 bits key */
+
+#define AHMD596_ALEN           16              /* MD5 128 bits authentication length */
+#define AHSHA196_ALEN          20              /* SHA1 160 bits authentication length */
+
+#define AHMD596_BLKLEN         64              /* MD5 block length */
+#define AHSHA196_BLKLEN        64              /* SHA1 block length */
+#define AHSHA2_256_BLKLEN      64              /* SHA2-256 block length */
+#define AHSHA2_384_BLKLEN      128             /* SHA2-384 block length (?) */
+#define AHSHA2_512_BLKLEN      128             /* SHA2-512 block length */
+
+#define AH_BLKLEN_MAX          128             /* keep up to date! */
+
+
+#define AH_AMAX                AHSHA196_ALEN   /* keep up to date! */
+#define AHHMAC_HASHLEN         12              /* authenticator length of 96bits */
+#define AHHMAC_RPLLEN          4               /* 32 bit replay counter */
+
+#define DB_AH_PKTRX            0x0001
+#define DB_AH_PKTRX2           0x0002
+#define DB_AH_DMP              0x0004
+#define DB_AH_IPSA             0x0010
+#define DB_AH_XF               0x0020
+#define DB_AH_INAU             0x0040
+#define DB_AH_REPLAY           0x0100
+
+#ifdef __KERNEL__
+
+/* General HMAC algorithm is described in RFC 2104 */
+
+#define                HMAC_IPAD       0x36
+#define                HMAC_OPAD       0x5C
+
+struct md5_ctx {
+       MD5_CTX ictx;           /* context after H(K XOR ipad) */
+       MD5_CTX octx;           /* context after H(K XOR opad) */
+};
+
+struct sha1_ctx {
+       SHA1_CTX ictx;          /* context after H(K XOR ipad) */
+       SHA1_CTX octx;          /* context after H(K XOR opad) */
+};
+
+struct auth_alg {
+       void (*init)(void *ctx);
+       void (*update)(void *ctx, unsigned char *bytes, __u32 len);
+       void (*final)(unsigned char *hash, void *ctx);
+       int hashlen;
+};
+
+struct options;
+
+#endif /* __KERNEL__ */
+#endif /* IPSEC_AUTH_H */
+
+/*
+ * $Log: ipsec_auth.h,v $
+ * Revision 1.3  2004-04-06 02:49:08  mcr
+ *     pullup of algo code from alg-branch.
+ *
+ * Revision 1.2  2004/04/05 19:55:04  mcr
+ * Moved from linux/include/freeswan/ipsec_auth.h,v
+ *
+ * Revision 1.1  2003/12/13 19:10:16  mcr
+ *     refactored rcv and xmit code - same as FS 2.05.
+ *
+ * Revision 1.1  2003/12/06 21:21:19  mcr
+ *     split up receive path into per-transform files, for
+ *     easier later removal.
+ *
+ *
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/openswan/ipsec_encap.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,149 @@
+/*
+ * declarations relevant to encapsulation-like operations
+ * Copyright (C) 1996, 1997  John Ioannidis.
+ * Copyright (C) 1998, 1999, 2000, 2001  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id: ipsec_encap.h,v 1.19 2004-04-05 19:55:04 mcr Exp $
+ */
+
+#ifndef _IPSEC_ENCAP_H_
+
+#define SENT_IP4       16      /* data is two struct in_addr + proto + ports*/
+                       /* (2 * sizeof(struct in_addr)) */
+                       /* sizeof(struct sockaddr_encap)
+                          - offsetof(struct sockaddr_encap, Sen.Sip4.Src) */
+
+struct sockaddr_encap
+{
+       __u8    sen_len;                /* length */
+       __u8    sen_family;             /* AF_ENCAP */
+       __u16   sen_type;               /* see SENT_* */
+       union
+       {
+               struct                  /* SENT_IP4 */
+               {
+                       struct in_addr Src;
+                       struct in_addr Dst;
+                       __u8 Proto;
+                       __u16 Sport;
+                       __u16 Dport;
+               } Sip4;
+       } Sen;
+};
+
+#define sen_ip_src     Sen.Sip4.Src
+#define sen_ip_dst     Sen.Sip4.Dst
+#define sen_proto       Sen.Sip4.Proto
+#define sen_sport       Sen.Sip4.Sport
+#define sen_dport       Sen.Sip4.Dport
+
+#ifndef AF_ENCAP
+#define AF_ENCAP 26
+#endif /* AF_ENCAP */
+
+#define _IPSEC_ENCAP_H_
+#endif /* _IPSEC_ENCAP_H_ */
+
+/*
+ * $Log: ipsec_encap.h,v $
+ * Revision 1.19  2004-04-05 19:55:04  mcr
+ * Moved from linux/include/freeswan/ipsec_encap.h,v
+ *
+ * Revision 1.18  2003/10/31 02:27:05  mcr
+ *     pulled up port-selector patches and sa_id elimination.
+ *
+ * Revision 1.17.30.1  2003/09/21 13:59:38  mcr
+ *     pre-liminary X.509 patch - does not yet pass tests.
+ *
+ * Revision 1.17  2002/04/24 07:36:46  mcr
+ * Moved from ./klips/net/ipsec/ipsec_encap.h,v
+ *
+ * Revision 1.16  2001/11/26 09:23:47  rgb
+ * Merge MCR's ipsec_sa, eroute, proc and struct lifetime changes.
+ *
+ * Revision 1.15.2.1  2001/09/25 02:18:54  mcr
+ *     struct eroute moved to ipsec_eroute.h
+ *
+ * Revision 1.15  2001/09/14 16:58:36  rgb
+ * Added support for storing the first and last packets through a HOLD.
+ *
+ * Revision 1.14  2001/09/08 21:13:31  rgb
+ * Added pfkey ident extension support for ISAKMPd. (NetCelo)
+ *
+ * Revision 1.13  2001/06/14 19:35:08  rgb
+ * Update copyright date.
+ *
+ * Revision 1.12  2001/05/27 06:12:10  rgb
+ * Added structures for pid, packet count and last access time to eroute.
+ * Added packet count to beginning of /proc/net/ipsec_eroute.
+ *
+ * Revision 1.11  2000/09/08 19:12:56  rgb
+ * Change references from DEBUG_IPSEC to CONFIG_IPSEC_DEBUG.
+ *
+ * Revision 1.10  2000/03/22 16:15:36  rgb
+ * Fixed renaming of dev_get (MB).
+ *
+ * Revision 1.9  2000/01/21 06:13:26  rgb
+ * Added a macro for AF_ENCAP
+ *
+ * Revision 1.8  1999/12/31 14:56:55  rgb
+ * MB fix for 2.3 dev-use-count.
+ *
+ * Revision 1.7  1999/11/18 04:09:18  rgb
+ * Replaced all kernel version macros to shorter, readable form.
+ *
+ * Revision 1.6  1999/09/24 00:34:13  rgb
+ * Add Marc Boucher's support for 2.3.xx+.
+ *
+ * Revision 1.5  1999/04/11 00:28:57  henry
+ * GPL boilerplate
+ *
+ * Revision 1.4  1999/04/06 04:54:25  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.3  1998/10/19 14:44:28  rgb
+ * Added inclusion of freeswan.h.
+ * sa_id structure implemented and used: now includes protocol.
+ *
+ * Revision 1.2  1998/07/14 18:19:33  rgb
+ * Added #ifdef __KERNEL__ directives to restrict scope of header.
+ *
+ * Revision 1.1  1998/06/18 21:27:44  henry
+ * move sources from klips/src to klips/net/ipsec, to keep stupid
+ * kernel-build scripts happier in the presence of symlinks
+ *
+ * Revision 1.2  1998/04/21 21:29:10  rgb
+ * Rearrange debug switches to change on the fly debug output from user
+ * space.  Only kernel changes checked in at this time.  radij.c was also
+ * changed to temporarily remove buggy debugging code in rj_delete causing
+ * an OOPS and hence, netlink device open errors.
+ *
+ * Revision 1.1  1998/04/09 03:05:58  henry
+ * sources moved up from linux/net/ipsec
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:02  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.4  1997/01/15 01:28:15  ji
+ * Minor cosmetic changes.
+ *
+ * Revision 0.3  1996/11/20 14:35:48  ji
+ * Minor Cleanup.
+ * Rationalized debugging code.
+ *
+ * Revision 0.2  1996/11/02 00:18:33  ji
+ * First limited release.
+ *
+ *
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/openswan/ipsec_eroute.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,112 @@
+/*
+ * @(#) declarations of eroute structures
+ *
+ * Copyright (C) 1996, 1997  John Ioannidis.
+ * Copyright (C) 1998, 1999, 2000, 2001  Richard Guy Briggs <rgb@freeswan.org>
+ * Copyright (C) 2001                    Michael Richardson <mcr@freeswan.org>
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id: ipsec_eroute.h,v 1.5 2004-04-05 19:55:05 mcr Exp $
+ *
+ * derived from ipsec_encap.h 1.15 on 2001/9/18 by mcr.
+ *
+ */
+
+#ifndef _IPSEC_EROUTE_H_
+
+#include "radij.h"
+#include "ipsec_encap.h"
+#include "ipsec_radij.h"
+
+/*
+ * The "type" is really part of the address as far as the routing
+ * system is concerned. By using only one bit in the type field
+ * for each type, we sort-of make sure that different types of
+ * encapsulation addresses won't be matched against the wrong type.
+ */
+
+/*
+ * An entry in the radix tree 
+ */
+
+struct rjtentry
+{
+       struct  radij_node rd_nodes[2]; /* tree glue, and other values */
+#define        rd_key(r)       ((struct sockaddr_encap *)((r)->rd_nodes->rj_key))
+#define        rd_mask(r)      ((struct sockaddr_encap *)((r)->rd_nodes->rj_mask))
+       short   rd_flags;
+       short   rd_count;
+};
+
+struct ident
+{
+       __u16   type;   /* identity type */
+       __u64   id;     /* identity id */
+       __u8    len;    /* identity len */
+       caddr_t data;   /* identity data */
+};
+
+/*
+ * An encapsulation route consists of a pointer to a 
+ * radix tree entry and a SAID (a destination_address/SPI/protocol triple).
+ */
+
+struct eroute
+{
+       struct rjtentry er_rjt;
+       ip_said er_said;
+       uint32_t er_pid;
+       uint32_t er_count;
+       uint64_t er_lasttime;
+       struct sockaddr_encap er_eaddr; /* MCR get rid of _encap, it is silly*/
+       struct sockaddr_encap er_emask;
+        struct ident er_ident_s;
+        struct ident er_ident_d;
+       struct sk_buff* er_first;
+       struct sk_buff* er_last;
+};
+
+#define er_dst er_said.dst
+#define er_spi er_said.spi
+
+#define _IPSEC_EROUTE_H_
+#endif /* _IPSEC_EROUTE_H_ */
+
+/*
+ * $Log: ipsec_eroute.h,v $
+ * Revision 1.5  2004-04-05 19:55:05  mcr
+ * Moved from linux/include/freeswan/ipsec_eroute.h,v
+ *
+ * Revision 1.4  2003/10/31 02:27:05  mcr
+ *     pulled up port-selector patches and sa_id elimination.
+ *
+ * Revision 1.3.30.2  2003/10/29 01:10:19  mcr
+ *     elimited "struct sa_id"
+ *
+ * Revision 1.3.30.1  2003/09/21 13:59:38  mcr
+ *     pre-liminary X.509 patch - does not yet pass tests.
+ *
+ * Revision 1.3  2002/04/24 07:36:46  mcr
+ * Moved from ./klips/net/ipsec/ipsec_eroute.h,v
+ *
+ * Revision 1.2  2001/11/26 09:16:13  rgb
+ * Merge MCR's ipsec_sa, eroute, proc and struct lifetime changes.
+ *
+ * Revision 1.1.2.1  2001/09/25 02:18:54  mcr
+ *     struct eroute moved to ipsec_eroute.h
+ *
+ *
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ *
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/openswan/ipsec_errs.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,53 @@
+/*
+ * @(#) definition of ipsec_errs structure
+ *
+ * Copyright (C) 2001  Richard Guy Briggs  <rgb@freeswan.org>
+ *                 and Michael Richardson  <mcr@freeswan.org>
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id: ipsec_errs.h,v 1.4 2004-04-05 19:55:05 mcr Exp $
+ *
+ */
+
+/* 
+ * This file describes the errors/statistics that FreeSWAN collects.
+ *
+ */
+
+struct ipsec_errs {
+       __u32           ips_alg_errs;          /* number of algorithm errors */
+       __u32           ips_auth_errs;         /* # of authentication errors */
+       __u32           ips_encsize_errs;      /* # of encryption size errors*/
+       __u32           ips_encpad_errs;       /* # of encryption pad  errors*/
+       __u32           ips_replaywin_errs;    /* # of pkt sequence errors */
+};
+
+/*
+ * $Log: ipsec_errs.h,v $
+ * Revision 1.4  2004-04-05 19:55:05  mcr
+ * Moved from linux/include/freeswan/ipsec_errs.h,v
+ *
+ * Revision 1.3  2002/04/24 07:36:46  mcr
+ * Moved from ./klips/net/ipsec/ipsec_errs.h,v
+ *
+ * Revision 1.2  2001/11/26 09:16:13  rgb
+ * Merge MCR's ipsec_sa, eroute, proc and struct lifetime changes.
+ *
+ * Revision 1.1.2.1  2001/09/25 02:25:57  mcr
+ *     lifetime structure created and common functions created.
+ *
+ *
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ *
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/openswan/ipsec_esp.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,157 @@
+/*
+ * Copyright (C) 1996, 1997  John Ioannidis.
+ * Copyright (C) 1998, 1999, 2000, 2001  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id: ipsec_esp.h,v 1.28 2004-09-13 02:22:10 mcr Exp $
+ */
+
+#include "openswan/ipsec_md5h.h"
+#include "openswan/ipsec_sha1.h"
+
+#include "crypto/des.h"
+
+#ifndef IPPROTO_ESP
+#define IPPROTO_ESP 50
+#endif /* IPPROTO_ESP */
+
+#define ESP_HEADER_LEN         8       /* 64 bits header (spi+rpl)*/
+
+#define EMT_ESPDESCBC_ULEN     20      /* coming from user mode */
+#define EMT_ESPDES_KMAX                64      /* 512 bit secret key enough? */
+#define EMT_ESPDES_KEY_SZ      8       /* 56 bit secret key with parity = 64 bits */
+#define EMT_ESP3DES_KEY_SZ     24      /* 168 bit secret key with parity = 192 bits */
+#define EMT_ESPDES_IV_SZ       8       /* IV size */
+#define ESP_DESCBC_BLKLEN       8       /* DES-CBC block size */
+
+#define ESP_IV_MAXSZ           16      /* This is _critical_ */
+#define ESP_IV_MAXSZ_INT       (ESP_IV_MAXSZ/sizeof(int))
+
+#define DB_ES_PKTRX    0x0001
+#define DB_ES_PKTRX2   0x0002
+#define DB_ES_IPSA     0x0010
+#define DB_ES_XF       0x0020
+#define DB_ES_IPAD     0x0040
+#define DB_ES_INAU     0x0080
+#define DB_ES_OINFO    0x0100
+#define DB_ES_OINFO2   0x0200
+#define DB_ES_OH       0x0400
+#define DB_ES_REPLAY   0x0800
+
+#ifdef __KERNEL__
+struct des_eks {
+       des_key_schedule ks;
+};
+
+extern struct inet_protocol esp_protocol;
+
+struct options;
+
+struct esphdr
+{
+       __u32   esp_spi;                /* Security Parameters Index */
+        __u32   esp_rpl;                /* Replay counter */
+       __u8    esp_iv[8];              /* iv */
+};
+
+extern struct xform_functions esp_xform_funcs[];
+
+#ifdef CONFIG_KLIPS_DEBUG
+extern int debug_esp;
+#endif /* CONFIG_KLIPS_DEBUG */
+#endif /* __KERNEL__ */
+
+/*
+ * $Log: ipsec_esp.h,v $
+ * Revision 1.28  2004-09-13 02:22:10  mcr
+ *     #define inet_protocol if necessary.
+ *
+ * Revision 1.27  2004/09/06 18:35:41  mcr
+ *     2.6.8.1 gets rid of inet_protocol->net_protocol compatibility,
+ *     so adjust for that.
+ *
+ * Revision 1.26  2004/07/10 19:08:41  mcr
+ *     CONFIG_IPSEC -> CONFIG_KLIPS.
+ *
+ * Revision 1.25  2004/04/06 02:49:08  mcr
+ *     pullup of algo code from alg-branch.
+ *
+ * Revision 1.24  2004/04/05 19:55:05  mcr
+ * Moved from linux/include/freeswan/ipsec_esp.h,v
+ *
+ * Revision 1.23  2004/04/05 19:41:05  mcr
+ *     merged alg-branch code.
+ *
+ * Revision 1.22  2003/12/13 19:10:16  mcr
+ *     refactored rcv and xmit code - same as FS 2.05.
+ *
+ * Revision 1.23  2003/12/11 20:14:58  mcr
+ *     refactored the xmit code, to move all encapsulation
+ *     code into protocol functions. Note that all functions
+ *     are essentially done by a single function, which is probably
+ *     wrong.
+ *     the rcv_functions structures are renamed xform_functions.
+ *
+ * Revision 1.22  2003/12/06 21:21:19  mcr
+ *     split up receive path into per-transform files, for
+ *     easier later removal.
+ *
+ * Revision 1.21.8.1  2003/12/22 15:25:52  jjo
+ *      Merged algo-0.8.1-rc11-test1 into alg-branch
+ *
+ * Revision 1.21  2003/02/06 02:21:34  rgb
+ *
+ * Moved "struct auth_alg" from ipsec_rcv.c to ipsec_ah.h .
+ * Changed "struct ah" to "struct ahhdr" and "struct esp" to "struct esphdr".
+ * Removed "#ifdef INBOUND_POLICY_CHECK_eroute" dead code.
+ *
+ * Revision 1.20  2002/05/14 02:37:02  rgb
+ * Change reference from _TDB to _IPSA.
+ *
+ * Revision 1.19  2002/04/24 07:55:32  mcr
+ *     #include patches and Makefiles for post-reorg compilation.
+ *
+ * Revision 1.18  2002/04/24 07:36:46  mcr
+ * Moved from ./klips/net/ipsec/ipsec_esp.h,v
+ *
+ * Revision 1.17  2002/02/20 01:27:07  rgb
+ * Ditched a pile of structs only used by the old Netlink interface.
+ *
+ * Revision 1.16  2001/12/11 02:35:57  rgb
+ * Change "struct net_device" to "struct device" for 2.2 compatibility.
+ *
+ * Revision 1.15  2001/11/26 09:23:48  rgb
+ * Merge MCR's ipsec_sa, eroute, proc and struct lifetime changes.
+ *
+ * Revision 1.14.2.3  2001/10/23 04:16:42  mcr
+ *     get definition of des_key_schedule from des.h
+ *
+ * Revision 1.14.2.2  2001/10/22 20:33:13  mcr
+ *     use "des_key_schedule" structure instead of cooking our own.
+ *
+ * Revision 1.14.2.1  2001/09/25 02:18:25  mcr
+ *     replace "struct device" with "struct netdevice"
+ *
+ * Revision 1.14  2001/06/14 19:35:08  rgb
+ * Update copyright date.
+ *
+ * Revision 1.13  2000/09/08 19:12:56  rgb
+ * Change references from DEBUG_IPSEC to CONFIG_IPSEC_DEBUG.
+ *
+ * Revision 1.12  2000/08/01 14:51:50  rgb
+ * Removed _all_ remaining traces of DES.
+ *
+ * Revision 1.11  2000/01/10 16:36:20  rgb
+ * Ditch last of EME option flags, including initiator.
+ *
+ *
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/openswan/ipsec_ipcomp.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,94 @@
+/*
+ * IP compression header declations
+ *
+ * Copyright (C) 2003 Michael Richardson <mcr@sandelman.ottawa.on.ca>
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id: ipsec_ipcomp.h,v 1.4 2004-07-10 19:08:41 mcr Exp $
+ */
+
+#ifndef IPSEC_IPCOMP_H
+#define IPSEC_IPCOMP_H
+
+#include "openswan/ipsec_auth.h"
+
+/* Prefix all global deflate symbols with "ipcomp_" to avoid collisions with ppp_deflate & ext2comp */
+#ifndef IPCOMP_PREFIX
+#define IPCOMP_PREFIX
+#endif /* IPCOMP_PREFIX */
+
+#ifndef IPPROTO_COMP
+#define IPPROTO_COMP 108
+#endif /* IPPROTO_COMP */
+
+#ifdef CONFIG_KLIPS_DEBUG
+extern int sysctl_ipsec_debug_ipcomp;
+#endif /* CONFIG_KLIPS_DEBUG */
+
+struct ipcomphdr {                     /* IPCOMP header */
+    __u8    ipcomp_nh;         /* Next header (protocol) */
+    __u8    ipcomp_flags;      /* Reserved, must be 0 */
+    __u16   ipcomp_cpi;                /* Compression Parameter Index */
+};
+
+extern struct inet_protocol comp_protocol;
+extern int sysctl_ipsec_debug_ipcomp;
+
+#define IPCOMP_UNCOMPRESSABLE     0x000000001
+#define IPCOMP_COMPRESSIONERROR   0x000000002
+#define IPCOMP_PARMERROR          0x000000004
+#define IPCOMP_DECOMPRESSIONERROR 0x000000008
+
+#define IPCOMP_ADAPT_INITIAL_TRIES     8
+#define IPCOMP_ADAPT_INITIAL_SKIP      4
+#define IPCOMP_ADAPT_SUBSEQ_TRIES      2
+#define IPCOMP_ADAPT_SUBSEQ_SKIP       8
+
+/* Function prototypes */
+struct sk_buff *skb_compress(struct sk_buff *skb, struct ipsec_sa *ips, unsigned int *flags);
+struct sk_buff *skb_decompress(struct sk_buff *skb, struct ipsec_sa *ips, unsigned int *flags);
+
+extern struct xform_functions ipcomp_xform_funcs[];
+
+#endif /* IPSEC_IPCOMP_H */
+
+/*
+ * $Log: ipsec_ipcomp.h,v $
+ * Revision 1.4  2004-07-10 19:08:41  mcr
+ *     CONFIG_IPSEC -> CONFIG_KLIPS.
+ *
+ * Revision 1.3  2004/04/06 02:49:08  mcr
+ *     pullup of algo code from alg-branch.
+ *
+ * Revision 1.2  2004/04/05 19:55:05  mcr
+ * Moved from linux/include/freeswan/ipsec_ipcomp.h,v
+ *
+ * Revision 1.1  2003/12/13 19:10:16  mcr
+ *     refactored rcv and xmit code - same as FS 2.05.
+ *
+ * Revision 1.2  2003/12/11 20:14:58  mcr
+ *     refactored the xmit code, to move all encapsulation
+ *     code into protocol functions. Note that all functions
+ *     are essentially done by a single function, which is probably
+ *     wrong.
+ *     the rcv_functions structures are renamed xform_functions.
+ *
+ * Revision 1.1  2003/12/06 21:21:19  mcr
+ *     split up receive path into per-transform files, for
+ *     easier later removal.
+ *
+ *
+ *
+ */
+
+
+
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/openswan/ipsec_ipe4.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,68 @@
+/*
+ * IP-in-IP Header declarations
+ * Copyright (C) 1996, 1997  John Ioannidis.
+ * Copyright (C) 1998, 1999, 2000, 2001  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id: ipsec_ipe4.h,v 1.6 2004-04-05 19:55:05 mcr Exp $
+ */
+
+/* The packet header is an IP header! */
+
+struct ipe4_xdata                      /* transform table data */
+{
+       struct in_addr  i4_src;
+       struct in_addr  i4_dst;
+};
+
+#define EMT_IPE4_ULEN  8       /* coming from user mode */
+ 
+
+/*
+ * $Log: ipsec_ipe4.h,v $
+ * Revision 1.6  2004-04-05 19:55:05  mcr
+ * Moved from linux/include/freeswan/ipsec_ipe4.h,v
+ *
+ * Revision 1.5  2002/04/24 07:36:46  mcr
+ * Moved from ./klips/net/ipsec/ipsec_ipe4.h,v
+ *
+ * Revision 1.4  2001/06/14 19:35:08  rgb
+ * Update copyright date.
+ *
+ * Revision 1.3  1999/04/11 00:28:57  henry
+ * GPL boilerplate
+ *
+ * Revision 1.2  1999/04/06 04:54:25  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.1  1998/06/18 21:27:47  henry
+ * move sources from klips/src to klips/net/ipsec, to keep stupid
+ * kernel-build scripts happier in the presence of symlinks
+ *
+ * Revision 1.1  1998/04/09 03:06:07  henry
+ * sources moved up from linux/net/ipsec
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:03  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.4  1997/01/15 01:28:15  ji
+ * No changes.
+ *
+ * Revision 0.3  1996/11/20 14:48:53  ji
+ * Release update only.
+ *
+ * Revision 0.2  1996/11/02 00:18:33  ji
+ * First limited release.
+ *
+ *
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/openswan/ipsec_ipip.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2003 Michael Richardson <mcr@sandelman.ottawa.on.ca>
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id: ipsec_ipip.h,v 1.2 2004-04-05 19:55:05 mcr Exp $
+ */
+
+#ifndef _IPSEC_IPIP_H_
+
+#ifndef IPPROTO_IPIP
+#define IPPROTO_IPIP 4
+#endif /* IPPROTO_ESP */
+
+extern struct xform_functions ipip_xform_funcs[];
+
+#define _IPSEC_IPIP_H_
+
+#endif /* _IPSEC_IPIP_H_ */
+
+/*
+ * $Log: ipsec_ipip.h,v $
+ * Revision 1.2  2004-04-05 19:55:05  mcr
+ * Moved from linux/include/freeswan/ipsec_ipip.h,v
+ *
+ * Revision 1.1  2003/12/13 19:10:16  mcr
+ *     refactored rcv and xmit code - same as FS 2.05.
+ *
+ * Revision 1.1  2003/12/11 20:14:58  mcr
+ *     refactored the xmit code, to move all encapsulation
+ *     code into protocol functions. Note that all functions
+ *     are essentially done by a single function, which is probably
+ *     wrong.
+ *     the rcv_functions structures are renamed xform_functions.
+ *
+ *
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/openswan/ipsec_kern24.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,61 @@
+/*
+ * @(#) routines to makes kernel 2.4 compatible with 2.6 usage.
+ *
+ * Copyright (C) 2004 Michael Richardson <mcr@sandelman.ottawa.on.ca>
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id: ipsec_kern24.h,v 1.4 2005-05-20 03:19:18 mcr Exp $
+ */
+
+#ifndef _IPSEC_KERN24_H
+
+#ifndef NET_26
+#define sk_receive_queue  receive_queue
+#define sk_destruct       destruct
+#define sk_reuse          reuse
+#define sk_zapped         zapped
+#define sk_family         family
+#define sk_protocol       protocol
+#define sk_protinfo       protinfo
+#define sk_sleep          sleep
+#define sk_state_change   state_change
+#define sk_shutdown       shutdown
+#define sk_err            err
+#define sk_stamp          stamp
+#define sk_socket         socket
+#define sk_sndbuf         sndbuf
+#define sock_flag(sk, flag)  sk->dead
+#define sk_for_each(sk, node, plist) for(sk=*plist; sk!=NULL; sk = sk->next)
+#endif
+
+/* deal with 2.4 vs 2.6 issues with module counts */
+
+/* in 2.6, all refcounts are maintained *outside* of the
+ * module to deal with race conditions.
+ */
+
+#ifdef NET_26
+#define KLIPS_INC_USE /* nothing */
+#define KLIPS_DEC_USE /* nothing */
+
+#else
+#define KLIPS_INC_USE MOD_INC_USE_COUNT
+#define KLIPS_DEC_USE MOD_DEC_USE_COUNT
+#endif
+
+extern int printk_ratelimit(void);
+
+
+#define _IPSEC_KERN24_H 1
+
+#endif /* _IPSEC_KERN24_H */
+
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/openswan/ipsec_kversion.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,429 @@
+#ifndef _OPENSWAN_KVERSIONS_H
+/*
+ * header file for FreeS/WAN library functions
+ * Copyright (C) 1998, 1999, 2000  Henry Spencer.
+ * Copyright (C) 1999, 2000, 2001  Richard Guy Briggs
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id: ipsec_kversion.h,v 1.15.2.21 2008-02-17 20:35:35 paul Exp $
+ */
+#define        _OPENSWAN_KVERSIONS_H   /* seen it, no need to see it again */
+
+/*
+ * this file contains a series of atomic defines that depend upon
+ * kernel version numbers. The kernel versions are arranged
+ * in version-order number (which is often not chronological)
+ * and each clause enables or disables a feature.
+ */
+
+/*
+ * First, assorted kernel-version-dependent trickery.
+ */
+#include <linux/version.h>
+#ifndef KERNEL_VERSION
+#define KERNEL_VERSION(x,y,z) (((x)<<16)+((y)<<8)+(z))
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,1,0)
+#define HEADER_CACHE_BIND_21
+#error "KLIPS is no longer supported on Linux 2.0. Sorry"
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,1,0)
+#define SPINLOCK
+#define PROC_FS_21
+#define NETLINK_SOCK
+#define NET_21
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,1,19)
+#define net_device_stats enet_statistics
+#endif                                                                         
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,0)
+#define SPINLOCK_23
+#define NETDEV_23
+#  ifndef CONFIG_IP_ALIAS
+#  define CONFIG_IP_ALIAS
+#  endif
+#include <linux/socket.h>
+#include <linux/skbuff.h>
+#include <linux/netlink.h>
+#  ifdef NETLINK_XFRM
+#  define NETDEV_25
+#  endif
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,25)
+#define PROC_FS_2325
+#undef  PROC_FS_21
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,30)
+#define PROC_NO_DUMMY
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,35)
+#define SKB_COPY_EXPAND
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,37)
+#define IP_SELECT_IDENT
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,50)
+# if(LINUX_VERSION_CODE < KERNEL_VERSION(2,6,23) && defined(CONFIG_NETFILTER))
+#  define SKB_RESET_NFCT
+# elif LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,23)
+#  if defined(CONFIG_NF_CONNTRACK) || defined(CONFIG_NF_CONNTRACK_MODULE)
+#   define SKB_RESET_NFCT
+#  endif
+# endif
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,2)
+#define IP_SELECT_IDENT_NEW
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,4)
+#define IPH_is_SKB_PULLED
+#define SKB_COW_NEW
+#define PROTO_HANDLER_SINGLE_PARM
+#define IP_FRAGMENT_LINEARIZE 1
+#else /* LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,4) */
+#  ifdef REDHAT_BOGOSITY
+#  define IP_SELECT_IDENT_NEW
+#  define IPH_is_SKB_PULLED
+#  define SKB_COW_NEW
+#  define PROTO_HANDLER_SINGLE_PARM
+#  endif /* REDHAT_BOGOSITY */
+#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,4) */
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,9)
+#define MALLOC_SLAB
+#define LINUX_KERNEL_HAS_SNPRINTF
+#endif                                                                         
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
+#define HAVE_NETDEV_PRINTK 1
+#define NET_26
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,8)
+#define NEED_INET_PROTOCOL
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,12)
+#define HAVE_SOCK_ZAPPED
+#define NET_26_12_SKALLOC
+#endif
+
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,13)
+#define HAVE_SOCK_SECURITY
+/* skb->nf_debug disappared completely in 2.6.13 */
+#define HAVE_SKB_NF_DEBUG
+#endif
+
+#define SYSCTL_IPSEC_DEFAULT_TTL sysctl_ip_default_ttl                      
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,14)
+/* skb->stamp changed to skb->tstamp in 2.6.14 */
+#define HAVE_TSTAMP
+#define HAVE_INET_SK_SPORT
+#undef  SYSCTL_IPSEC_DEFAULT_TTL
+#define SYSCTL_IPSEC_DEFAULT_TTL IPSEC_DEFAULT_TTL
+#else
+#define HAVE_SKB_LIST
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,18) || SLE_VERSION_CODE >= 655616
+#define HAVE_NEW_SKB_LINEARIZE
+#endif
+
+/* this is the best we can do to detect XEN, which makes
+ *  * patches to linux/skbuff.h, making it look like 2.6.18 version 
+ *   */
+#ifdef CONFIG_XEN
+#define HAVE_NEW_SKB_LINEARIZE
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,19)
+#define VOID_SOCK_UNREGISTER
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
+/* skb->nfmark changed to skb->mark in 2.6.20 */
+#define nfmark mark
+#endif
+
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,22)
+/* need to include ip.h early, no longer pick it up in skbuff.h */
+#include <linux/ip.h>
+#  define HAVE_KERNEL_TSTAMP
+/* type of sock.sk_stamp changed from timeval to ktime  */
+#  define grab_socket_timeval(tv, sock)  { (tv) = ktime_to_timeval((sock).sk_stamp); }
+#else
+#  define grab_socket_timeval(tv, sock)  { (tv) = (sock).sk_stamp; }
+/* internals of struct skbuff changed */
+#  define        HAVE_DEV_NEXT
+#  define ip_hdr(skb)  ((skb)->nh.iph)
+#  define skb_tail_pointer(skb)  ((skb)->tail)
+#  define skb_end_pointer(skb)  ((skb)->end)
+#  define skb_network_header(skb)  ((skb)->nh.raw)
+#  define skb_set_network_header(skb,off)  ((skb)->nh.raw = (skb)->data + (off))
+#  define tcp_hdr(skb)  ((skb)->h.th)
+#  define udp_hdr(skb)  ((skb)->h.uh)
+#  define skb_transport_header(skb)  ((skb)->h.raw)
+#  define skb_set_transport_header(skb,off)  ((skb)->h.raw = (skb)->data + (off))
+#  define skb_mac_header(skb)  ((skb)->mac.raw)
+#  define skb_set_mac_header(skb,off)  ((skb)->mac.raw = (skb)->data + (off))
+#endif
+/* turn a pointer into an offset for above macros */
+#define ipsec_skb_offset(skb, ptr) (((unsigned char *)(ptr)) - (skb)->data)
+
+#ifdef NET_21
+#  include <linux/in6.h>
+#else
+     /* old kernel in.h has some IPv6 stuff, but not quite enough */
+#  define      s6_addr16       s6_addr
+#  define      AF_INET6        10
+#  define uint8_t __u8
+#  define uint16_t __u16 
+#  define uint32_t __u32 
+#  define uint64_t __u64 
+#endif
+
+#ifdef NET_21
+# define ipsec_kfree_skb(a) kfree_skb(a)
+#else /* NET_21 */
+# define ipsec_kfree_skb(a) kfree_skb(a, FREE_WRITE)
+#endif /* NET_21 */
+
+#ifdef NETDEV_23
+#if 0
+#ifndef NETDEV_25
+#define device net_device
+#endif
+#endif
+# define ipsec_dev_get dev_get_by_name
+# define __ipsec_dev_get __dev_get_by_name
+# define ipsec_dev_put(x) dev_put(x)
+# define __ipsec_dev_put(x) __dev_put(x)
+# define ipsec_dev_hold(x) dev_hold(x)
+#else /* NETDEV_23 */
+# define ipsec_dev_get dev_get
+# define __ipsec_dev_put(x) 
+# define ipsec_dev_put(x)
+# define ipsec_dev_hold(x) 
+#endif /* NETDEV_23 */
+
+#ifndef SPINLOCK
+#  include <linux/bios32.h>
+     /* simulate spin locks and read/write locks */
+     typedef struct {
+       volatile char lock;
+     } spinlock_t;
+
+     typedef struct {
+       volatile unsigned int lock;
+     } rwlock_t;                                                                     
+
+#  define spin_lock_init(x) { (x)->lock = 0;}
+#  define rw_lock_init(x) { (x)->lock = 0; }
+
+#  define spin_lock(x) { while ((x)->lock) barrier(); (x)->lock=1;}
+#  define spin_lock_irq(x) { cli(); spin_lock(x);}
+#  define spin_lock_irqsave(x,flags) { save_flags(flags); spin_lock_irq(x);}
+
+#  define spin_unlock(x) { (x)->lock=0;}
+#  define spin_unlock_irq(x) { spin_unlock(x); sti();}
+#  define spin_unlock_irqrestore(x,flags) { spin_unlock(x); restore_flags(flags);}
+
+#  define read_lock(x) spin_lock(x)
+#  define read_lock_irq(x) spin_lock_irq(x)
+#  define read_lock_irqsave(x,flags) spin_lock_irqsave(x,flags)
+
+#  define read_unlock(x) spin_unlock(x)
+#  define read_unlock_irq(x) spin_unlock_irq(x)
+#  define read_unlock_irqrestore(x,flags) spin_unlock_irqrestore(x,flags)
+
+#  define write_lock(x) spin_lock(x)
+#  define write_lock_irq(x) spin_lock_irq(x)
+#  define write_lock_irqsave(x,flags) spin_lock_irqsave(x,flags)
+
+#  define write_unlock(x) spin_unlock(x)
+#  define write_unlock_irq(x) spin_unlock_irq(x)
+#  define write_unlock_irqrestore(x,flags) spin_unlock_irqrestore(x,flags)
+#endif /* !SPINLOCK */
+
+#ifndef SPINLOCK_23
+#  define spin_lock_bh(x)  spin_lock_irq(x)
+#  define spin_unlock_bh(x)  spin_unlock_irq(x)
+
+#  define read_lock_bh(x)  read_lock_irq(x)
+#  define read_unlock_bh(x)  read_unlock_irq(x)
+
+#  define write_lock_bh(x)  write_lock_irq(x)
+#  define write_unlock_bh(x)  write_unlock_irq(x)
+#endif /* !SPINLOCK_23 */
+
+#ifndef HAVE_NETDEV_PRINTK
+#define netdev_printk(sevlevel, netdev, msglevel, format, arg...) \
+       printk(sevlevel "%s: " format , netdev->name , ## arg)
+#endif
+
+#if LINUX_VERSION_CODE <= KERNEL_VERSION(2,6,0)
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,0) 
+#include "openswan/ipsec_kern24.h"
+#else
+#error "kernels before 2.4 are not supported at this time"
+#endif
+#endif
+
+
+#endif /* _OPENSWAN_KVERSIONS_H */
+
+/*
+ * $Log: ipsec_kversion.h,v $
+ * Revision 1.15.2.21  2008-02-17 20:35:35  paul
+ * enable HAVE_NEW_SKB_LINEARIZE for Suse Linux SLES10 SP1
+ *
+ * Revision 1.15.2.20  2007-11-16 06:16:10  paul
+ * Fix brackets on SKB_RESET_NFCT case
+ *
+ * Revision 1.15.2.19  2007-11-16 06:01:27  paul
+ * On 2.6.23+, sk->nfct is part of skbut only when CONFIG_NF_CONNTRACK or
+ * CONFIG_NF_CONNTRACK_MODUE is set, where previously this was handled with
+ * CONFIG_NETFILTER.
+ *
+ * Revision 1.15.2.18  2007-11-07 14:17:56  paul
+ * Xen modifies skb structures, so xen kernels < 2.6.18 need to have
+ * HAVE_NEW_SKB_LINEARIZE defined.
+ *
+ * Revision 1.15.2.17  2007-10-31 19:57:40  paul
+ * type of sock.sk_stamp changed from timeval to ktime [dhr]
+ *
+ * Revision 1.15.2.16  2007-10-30 22:17:02  paul
+ * Move the define for ktime_to_timeval() from "not 2.6.22" to "< 2.6.16",
+ * where it belongs.
+ *
+ * Revision 1.15.2.15  2007-10-30 21:44:00  paul
+ * added a backport definition for define skb_end_pointer [dhr]
+ *
+ * Revision 1.15.2.14  2007-10-28 00:26:03  paul
+ * Start of fix for 2.6.22+ kernels and skb_tail_pointer()
+ *
+ * Revision 1.15.2.13  2007/09/05 02:28:27  paul
+ * Patch by David McCullough for 2.6.22 compatibility (HAVE_KERNEL_TSTAMP,
+ * HAVE_DEV_NEXT and other header surgery)
+ *
+ * Revision 1.15.2.12  2007/08/10 01:40:49  paul
+ * Fix for sock_unregister for 2.6.19 by Sergeil
+ *
+ * Revision 1.15.2.11  2007/02/20 03:53:16  paul
+ * Added comment, made layout consistent with other checks.
+ *
+ * Revision 1.15.2.10  2007/02/16 19:08:12  paul
+ * Fix for compiling on 2.6.20 (nfmark is now called mark in sk_buff)
+ *
+ * Revision 1.15.2.9  2006/07/29 05:00:40  paul
+ * Added HAVE_NEW_SKB_LINEARIZE for 2.6.18+ kernels where skb_linearize
+ * only takes 1 argument.
+ *
+ * Revision 1.15.2.8  2006/05/01 14:31:52  mcr
+ * FREESWAN->OPENSWAN in #ifdef.
+ *
+ * Revision 1.15.2.7  2006/01/11 02:02:59  mcr
+ * updated patches and DEFAULT_TTL code to work
+ *
+ * Revision 1.15.2.6  2006/01/03 19:25:02  ken
+ * Remove duplicated #ifdef for TTL fix - bad patch
+ *
+ * Revision 1.15.2.5  2006/01/03 18:06:33  ken
+ * Fix for missing sysctl default ttl
+ *
+ * Revision 1.15.2.4  2005/11/27 21:40:14  paul
+ * Pull down TTL fixes from head. this fixes "Unknown symbol sysctl_ip_default_ttl"
+ * in for klips as module.
+ *
+ * Revision 1.15.2.3  2005/11/22 04:11:52  ken
+ * Backport fixes for 2.6.14 kernels from HEAD
+ *
+ * Revision 1.15.2.2  2005/09/01 01:57:19  paul
+ * michael's fixes for 2.6.13 from head
+ *
+ * Revision 1.15.2.1  2005/08/27 23:13:48  paul
+ * Fix for:
+ * 7 weeks ago:        [NET]: Remove unused security member in sk_buff
+ * changeset 4280:     328ea53f5fee
+ * parent 4279:        beb0afb0e3f8
+ * author:     Thomas Graf <tgraf@suug.ch>
+ * date:       Tue Jul 5 21:12:44 2005
+ * files:      include/linux/skbuff.h include/linux/tc_ematch/tc_em_meta.h net/core/skbuff.c net/ipv4/ip_output.c net/ipv6/ip6_output.c net/sched/em_meta.c
+ *
+ * This should fix compilation on 2.6.13(rc) kernels
+ *
+ * Revision 1.15  2005/07/19 20:02:15  mcr
+ *     sk_alloc() interface change.
+ *
+ * Revision 1.14  2005/07/08 16:20:05  mcr
+ *     fix for 2.6.12 disapperance of sk_zapped field -> sock_flags.
+ *
+ * Revision 1.13  2005/05/20 03:19:18  mcr
+ *     modifications for use on 2.4.30 kernel, with backported
+ *     printk_ratelimit(). all warnings removed.
+ *
+ * Revision 1.12  2005/04/13 22:46:21  mcr
+ *     note that KLIPS does not work on Linux 2.0.
+ *
+ * Revision 1.11  2004/09/13 02:22:26  mcr
+ *     #define inet_protocol if necessary.
+ *
+ * Revision 1.10  2004/08/03 18:17:15  mcr
+ *     in 2.6, use "net_device" instead of #define device->net_device.
+ *     this probably breaks 2.0 compiles.
+ *
+ * Revision 1.9  2004/04/05 19:55:05  mcr
+ * Moved from linux/include/freeswan/ipsec_kversion.h,v
+ *
+ * Revision 1.8  2003/12/13 19:10:16  mcr
+ *     refactored rcv and xmit code - same as FS 2.05.
+ *
+ * Revision 1.7  2003/07/31 22:48:08  mcr
+ *     derive NET25-ness from presence of NETLINK_XFRM macro.
+ *
+ * Revision 1.6  2003/06/24 20:22:32  mcr
+ *     added new global: ipsecdevices[] so that we can keep track of
+ *     the ipsecX devices. They will be referenced with dev_hold(),
+ *     so 2.2 may need this as well.
+ *
+ * Revision 1.5  2003/04/03 17:38:09  rgb
+ * Centralised ipsec_kfree_skb and ipsec_dev_{get,put}.
+ *
+ * Revision 1.4  2002/04/24 07:36:46  mcr
+ * Moved from ./klips/net/ipsec/ipsec_kversion.h,v
+ *
+ * Revision 1.3  2002/04/12 03:21:17  mcr
+ *     three parameter version of ip_select_ident appears first
+ *     in 2.4.2 (RH7.1) not 2.4.4.
+ *
+ * Revision 1.2  2002/03/08 21:35:22  rgb
+ * Defined LINUX_KERNEL_HAS_SNPRINTF to shut up compiler warnings after
+ * 2.4.9.  (Andreas Piesk).
+ *
+ * Revision 1.1  2002/01/29 02:11:42  mcr
+ *     removal of kversions.h - sources that needed it now use ipsec_param.h.
+ *     updating of IPv6 structures to match latest in6.h version.
+ *     removed dead code from freeswan.h that also duplicated kversions.h
+ *     code.
+ *
+ *
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/openswan/ipsec_life.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,112 @@
+/*
+ * Definitions relevant to IPSEC lifetimes
+ * Copyright (C) 2001  Richard Guy Briggs  <rgb@freeswan.org>
+ *                 and Michael Richardson  <mcr@freeswan.org>
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id: ipsec_life.h,v 1.4 2004-04-05 19:55:05 mcr Exp $
+ *
+ * This file derived from ipsec_xform.h on 2001/9/18 by mcr.
+ *
+ */
+
+/* 
+ * This file describes the book keeping fields for the 
+ *   IPsec Security Association Structure. ("ipsec_sa")
+ *
+ * This structure is never allocated directly by kernel code,
+ * (it is always a static/auto or is part of a structure)
+ * so it does not have a reference count.
+ *
+ */
+
+#ifndef _IPSEC_LIFE_H_
+
+/*
+ *  _count is total count.
+ *  _hard is hard limit (kill SA after this number)
+ *  _soft is soft limit (try to renew SA after this number)
+ *  _last is used in some special cases.
+ *
+ */
+
+struct ipsec_lifetime64
+{
+       __u64           ipl_count;
+       __u64           ipl_soft;
+       __u64           ipl_hard;
+       __u64           ipl_last;  
+};
+
+struct ipsec_lifetimes
+{
+       /* number of bytes processed */
+       struct ipsec_lifetime64 ipl_bytes;
+
+       /* number of packets processed */
+       struct ipsec_lifetime64 ipl_packets;
+
+       /* time since SA was added */
+       struct ipsec_lifetime64 ipl_addtime;
+
+       /* time since SA was first used */
+       struct ipsec_lifetime64 ipl_usetime;
+
+       /* from rfc2367:  
+         *         For CURRENT, the number of different connections,
+         *         endpoints, or flows that the association has been
+         *          allocated towards. For HARD and SOFT, the number of
+         *          these the association may be allocated towards
+         *          before it expires. The concept of a connection,
+         *          flow, or endpoint is system specific.
+        *
+        * mcr(2001-9-18) it is unclear what purpose these serve for FreeSWAN.
+        *          They are maintained for PF_KEY compatibility. 
+        */
+       struct ipsec_lifetime64 ipl_allocations;
+};
+
+enum ipsec_life_alive {
+       ipsec_life_harddied = -1,
+       ipsec_life_softdied = 0,
+       ipsec_life_okay     = 1
+};
+
+enum ipsec_life_type {
+       ipsec_life_timebased = 1,
+       ipsec_life_countbased= 0
+};
+
+#define _IPSEC_LIFE_H_
+#endif /* _IPSEC_LIFE_H_ */
+
+
+/*
+ * $Log: ipsec_life.h,v $
+ * Revision 1.4  2004-04-05 19:55:05  mcr
+ * Moved from linux/include/freeswan/ipsec_life.h,v
+ *
+ * Revision 1.3  2002/04/24 07:36:46  mcr
+ * Moved from ./klips/net/ipsec/ipsec_life.h,v
+ *
+ * Revision 1.2  2001/11/26 09:16:14  rgb
+ * Merge MCR's ipsec_sa, eroute, proc and struct lifetime changes.
+ *
+ * Revision 1.1.2.1  2001/09/25 02:25:58  mcr
+ *     lifetime structure created and common functions created.
+ *
+ *
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ *
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/openswan/ipsec_md5h.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,143 @@
+/*
+ * RCSID $Id: ipsec_md5h.h,v 1.10 2004-09-08 17:21:35 ken Exp $
+ */
+
+/*
+ * The rest of this file is Copyright RSA DSI. See the following comments
+ * for the full Copyright notice.
+ */
+
+#ifndef _IPSEC_MD5H_H_
+#define _IPSEC_MD5H_H_
+
+/* GLOBAL.H - RSAREF types and constants
+ */
+
+/* PROTOTYPES should be set to one if and only if the compiler supports
+     function argument prototyping.
+   The following makes PROTOTYPES default to 0 if it has not already
+     been defined with C compiler flags.
+ */
+#ifndef PROTOTYPES
+#define PROTOTYPES 1
+#endif /* !PROTOTYPES */
+
+/* POINTER defines a generic pointer type */
+typedef __u8 *POINTER;
+
+/* UINT2 defines a two byte word */
+typedef __u16 UINT2;
+
+/* UINT4 defines a four byte word */
+typedef __u32 UINT4;
+
+/* PROTO_LIST is defined depending on how PROTOTYPES is defined above.
+   If using PROTOTYPES, then PROTO_LIST returns the list, otherwise it
+     returns an empty list.
+ */
+
+#if PROTOTYPES
+#define PROTO_LIST(list) list
+#else /* PROTOTYPES */
+#define PROTO_LIST(list) ()
+#endif /* PROTOTYPES */
+
+
+/* MD5.H - header file for MD5C.C
+ */
+
+/* Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All
+rights reserved.
+
+License to copy and use this software is granted provided that it
+is identified as the "RSA Data Security, Inc. MD5 Message-Digest
+Algorithm" in all material mentioning or referencing this software
+or this function.
+
+License is also granted to make and use derivative works provided
+that such works are identified as "derived from the RSA Data
+Security, Inc. MD5 Message-Digest Algorithm" in all material
+mentioning or referencing the derived work.
+
+RSA Data Security, Inc. makes no representations concerning either
+the merchantability of this software or the suitability of this
+software for any particular purpose. It is provided "as is"
+without express or implied warranty of any kind.
+
+These notices must be retained in any copies of any part of this
+documentation and/or software.
+ */
+
+/* MD5 context. */
+typedef struct {
+  UINT4 state[4];                                   /* state (ABCD) */
+  UINT4 count[2];        /* number of bits, modulo 2^64 (lsb first) */
+  unsigned char buffer[64];                         /* input buffer */
+} MD5_CTX;
+
+void osMD5Init PROTO_LIST ((void *));
+void osMD5Update PROTO_LIST
+  ((void *, unsigned char *, __u32));
+void osMD5Final PROTO_LIST ((unsigned char [16], void *));
+ 
+#endif /* _IPSEC_MD5H_H_ */
+
+/*
+ * $Log: ipsec_md5h.h,v $
+ * Revision 1.10  2004-09-08 17:21:35  ken
+ * Rename MD5* -> osMD5 functions to prevent clashes with other symbols exported by kernel modules (CIFS in 2.6 initiated this)
+ *
+ * Revision 1.9  2004/04/05 19:55:05  mcr
+ * Moved from linux/include/freeswan/ipsec_md5h.h,v
+ *
+ * Revision 1.8  2002/09/10 01:45:09  mcr
+ *     changed type of MD5_CTX and SHA1_CTX to void * so that
+ *     the function prototypes would match, and could be placed
+ *     into a pointer to a function.
+ *
+ * Revision 1.7  2002/04/24 07:36:46  mcr
+ * Moved from ./klips/net/ipsec/ipsec_md5h.h,v
+ *
+ * Revision 1.6  1999/12/13 13:59:13  rgb
+ * Quick fix to argument size to Update bugs.
+ *
+ * Revision 1.5  1999/12/07 18:16:23  rgb
+ * Fixed comments at end of #endif lines.
+ *
+ * Revision 1.4  1999/04/06 04:54:26  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.3  1999/01/22 06:19:58  rgb
+ * 64-bit clean-up.
+ *
+ * Revision 1.2  1998/11/30 13:22:54  rgb
+ * Rationalised all the klips kernel file headers.  They are much shorter
+ * now and won't conflict under RH5.2.
+ *
+ * Revision 1.1  1998/06/18 21:27:48  henry
+ * move sources from klips/src to klips/net/ipsec, to keep stupid
+ * kernel-build scripts happier in the presence of symlinks
+ *
+ * Revision 1.2  1998/04/23 20:54:03  rgb
+ * Fixed md5 and sha1 include file nesting issues, to be cleaned up when
+ * verified.
+ *
+ * Revision 1.1  1998/04/09 03:04:21  henry
+ * sources moved up from linux/net/ipsec
+ * these two include files modified not to include others except in kernel
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:03  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.4  1997/01/15 01:28:15  ji
+ * No changes.
+ *
+ * Revision 0.3  1996/11/20 14:48:53  ji
+ * Release update only.
+ *
+ * Revision 0.2  1996/11/02 00:18:33  ji
+ * First limited release.
+ *
+ *
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/openswan/ipsec_param.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,397 @@
+/*
+ * @(#) Openswan tunable paramaters
+ *
+ * Copyright (C) 2001  Richard Guy Briggs  <rgb@freeswan.org>
+ *                 and Michael Richardson  <mcr@freeswan.org>
+ * Copyright (C) 2004  Michael Richardson  <mcr@xelerance.com>
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id: ipsec_param.h,v 1.29.6.5 2008-02-18 16:27:19 paul Exp $
+ *
+ */
+
+/* 
+ * This file provides a set of #define's which may be tuned by various
+ * people/configurations. It keeps all compile-time tunables in one place.
+ *
+ * This file should be included before all other IPsec kernel-only files.
+ *
+ */
+
+#ifndef _IPSEC_PARAM_H_
+
+#ifdef __KERNEL__
+#include "ipsec_kversion.h"
+
+/* Set number of ipsecX virtual devices here. */
+/* This must be < exp(field width of IPSEC_DEV_FORMAT) */
+/* It must also be reasonable so as not to overload the memory and CPU */
+/* constraints of the host. */
+#define IPSEC_NUM_IF   4
+/* The field width must be < IF_NAM_SIZ - strlen("ipsec") - 1. */
+/* With "ipsec" being 5 characters, that means 10 is the max field width */
+/* but machine memory and CPU constraints are not likely to tollerate */
+/* more than 3 digits.  The default is one digit. */
+/* Update: userland scripts get upset if they can't find "ipsec0", so */
+/* for now, no "0"-padding should be used (which would have been helpful */
+/* to make text-searches work */
+#define IPSEC_DEV_FORMAT "ipsec%d"
+/* For, say, 500 virtual ipsec devices, I would recommend: */
+/* #define IPSEC_NUM_IF        500 */
+/* #define IPSEC_DEV_FORMAT "ipsec%03d" */
+/* Note that the "interfaces=" line in /etc/ipsec.conf would be, um, challenging. */
+
+/* use dynamic ipsecX device allocation */
+#ifndef CONFIG_KLIPS_DYNDEV
+#define CONFIG_KLIPS_DYNDEV 1
+#endif /* CONFIG_KLIPS_DYNDEV */
+
+
+#ifdef CONFIG_KLIPS_BIGGATE
+# define SADB_HASHMOD   8069
+#else /* CONFIG_KLIPS_BIGGATE */
+# define SADB_HASHMOD  257
+#endif /* CONFIG_KLIPS_BIGGATE */
+#endif /* __KERNEL__ */
+
+/*
+ * This is for the SA reference table. This number is related to the
+ * maximum number of SAs that KLIPS can concurrently deal with, plus enough
+ * space for keeping expired SAs around.
+ *
+ * TABLE_MAX_WIDTH is the number of bits that we will use.
+ * MAIN_TABLE_WIDTH is the number of bits used for the primary index table.
+ *
+ */
+#ifndef IPSEC_SA_REF_TABLE_IDX_WIDTH
+# define IPSEC_SA_REF_TABLE_IDX_WIDTH 16
+#endif
+
+#ifndef IPSEC_SA_REF_MAINTABLE_IDX_WIDTH 
+# define IPSEC_SA_REF_MAINTABLE_IDX_WIDTH 4 
+#endif
+
+#ifndef IPSEC_SA_REF_FREELIST_NUM_ENTRIES 
+# define IPSEC_SA_REF_FREELIST_NUM_ENTRIES 256
+#endif
+
+#ifndef IPSEC_SA_REF_CODE 
+# define IPSEC_SA_REF_CODE 1 
+#endif
+
+#ifdef __KERNEL__
+/* This is defined for 2.4, but not 2.2.... */
+#ifndef ARPHRD_VOID
+# define ARPHRD_VOID 0xFFFF
+#endif
+
+/* always turn on IPIP mode */
+#ifndef CONFIG_KLIPS_IPIP 
+#define CONFIG_KLIPS_IPIP 1
+#endif
+
+/*
+ * Worry about PROC_FS stuff
+ */
+#if defined(PROC_FS_2325)
+/* kernel 2.4 */
+# define IPSEC_PROC_LAST_ARG ,int *eof,void *data
+# define IPSEC_PROCFS_DEBUG_NO_STATIC
+# define IPSEC_PROC_SUBDIRS
+#else
+/* kernel <2.4 */
+# define IPSEC_PROCFS_DEBUG_NO_STATIC DEBUG_NO_STATIC
+
+# ifndef PROC_NO_DUMMY
+#  define IPSEC_PROC_LAST_ARG , int dummy
+# else
+#  define IPSEC_PROC_LAST_ARG
+# endif /* !PROC_NO_DUMMY */
+#endif /* PROC_FS_2325 */
+
+#if !defined(LINUX_KERNEL_HAS_SNPRINTF)
+/* GNU CPP specific! */
+# define snprintf(buf, len, fmt...) sprintf(buf, ##fmt)
+#endif /* !LINUX_KERNEL_HAS_SNPRINTF */
+
+#ifdef SPINLOCK
+# ifdef SPINLOCK_23
+#  include <linux/spinlock.h> /* *lock* */
+# else /* SPINLOCK_23 */
+#  include <asm/spinlock.h> /* *lock* */
+# endif /* SPINLOCK_23 */
+#endif /* SPINLOCK */
+
+#ifndef KLIPS_FIXES_DES_PARITY
+# define KLIPS_FIXES_DES_PARITY 1
+#endif /* !KLIPS_FIXES_DES_PARITY */
+
+/* we don't really want to print these unless there are really big problems */
+#ifndef KLIPS_DIVULGE_CYPHER_KEY
+# define KLIPS_DIVULGE_CYPHER_KEY 0
+#endif /* !KLIPS_DIVULGE_CYPHER_KEY */
+
+#ifndef KLIPS_DIVULGE_HMAC_KEY
+# define KLIPS_DIVULGE_HMAC_KEY 0
+#endif /* !KLIPS_DIVULGE_HMAC_KEY */
+
+#ifndef IPSEC_DISALLOW_IPOPTIONS
+# define IPSEC_DISALLOW_IPOPTIONS 1
+#endif /* !KLIPS_DIVULGE_HMAC_KEY */
+
+/* extra toggles for regression testing */
+#ifdef CONFIG_KLIPS_REGRESS
+
+/* 
+ * should pfkey_acquire() become 100% lossy?
+ *
+ */
+extern int sysctl_ipsec_regress_pfkey_lossage;
+#ifndef KLIPS_PFKEY_ACQUIRE_LOSSAGE
+# ifdef CONFIG_KLIPS_PFKEY_ACQUIRE_LOSSAGE
+#  define KLIPS_PFKEY_ACQUIRE_LOSSAGE 100
+# endif /* CONFIG_KLIPS_PFKEY_ACQUIRE_LOSSAGE */
+#else
+#define KLIPS_PFKEY_ACQUIRE_LOSSAGE 0
+#endif /* KLIPS_PFKEY_ACQUIRE_LOSSAGE */
+
+#else /* CONFIG_KLIPS_REGRESS */
+#define KLIPS_PFKEY_ACQUIRE_LOSSAGE 0
+
+#endif /* CONFIG_KLIPS_REGRESS */
+
+
+/*
+ * debugging routines.
+ */
+#define KLIPS_ERROR(flag, format, args...) if(printk_ratelimit() || flag) printk(KERN_ERR "KLIPS " format, ## args)
+#ifdef CONFIG_KLIPS_DEBUG
+#include <linux/ip.h>
+extern void ipsec_print_ip(struct iphdr *ip);
+
+       #define KLIPS_PRINT(flag, format, args...) \
+               ((flag) ? printk(KERN_INFO format , ## args) : 0)
+       #define KLIPS_PRINTMORE(flag, format, args...) \
+               ((flag) ? printk(format , ## args) : 0)
+       #define KLIPS_IP_PRINT(flag, ip) \
+               ((flag) ? ipsec_print_ip(ip) : 0)
+       #define KLIPS_SATOT(flag, sa, format, dst, dstlen) \
+               ((flag) ? satot(sa, format, dst, dstlen) : 0)
+#else /* CONFIG_KLIPS_DEBUG */
+       #define KLIPS_PRINT(flag, format, args...) do ; while(0)
+       #define KLIPS_PRINTMORE(flag, format, args...) do ; while(0)
+       #define KLIPS_IP_PRINT(flag, ip) do ; while(0)
+       #define KLIPS_SATOT(flag, sa, format, dst, dstlen) (0)
+#endif /* CONFIG_KLIPS_DEBUG */
+
+
+/* 
+ * Stupid kernel API differences in APIs. Not only do some
+ * kernels not have ip_select_ident, but some have differing APIs,
+ * and SuSE has one with one parameter, but no way of checking to
+ * see what is really what.
+ */
+
+#ifdef SUSE_LINUX_2_4_19_IS_STUPID
+#define KLIPS_IP_SELECT_IDENT(iph, skb) ip_select_ident(iph)
+#else
+
+/* simplest case, nothing */
+#if !defined(IP_SELECT_IDENT)
+#define KLIPS_IP_SELECT_IDENT(iph, skb)  do { iph->id = htons(ip_id_count++); } while(0)
+#endif
+
+/* kernels > 2.3.37-ish */
+#if defined(IP_SELECT_IDENT) && !defined(IP_SELECT_IDENT_NEW)
+#define KLIPS_IP_SELECT_IDENT(iph, skb) ip_select_ident(iph, skb->dst)
+#endif
+
+/* kernels > 2.4.2 */
+#if defined(IP_SELECT_IDENT) && defined(IP_SELECT_IDENT_NEW)
+#define KLIPS_IP_SELECT_IDENT(iph, skb) ip_select_ident(iph, skb->dst, NULL)
+#endif
+
+#endif /* SUSE_LINUX_2_4_19_IS_STUPID */
+
+/*
+ * make klips fail test:east-espiv-01.
+ * exploit is at testing/attacks/espiv
+ *
+ */
+#define KLIPS_IMPAIRMENT_ESPIV_CBC_ATTACK 0
+
+
+/* IP_FRAGMENT_LINEARIZE is set in freeswan.h if Kernel > 2.4.4 */
+#ifndef IP_FRAGMENT_LINEARIZE
+# define IP_FRAGMENT_LINEARIZE 0
+#endif /* IP_FRAGMENT_LINEARIZE */
+#endif /* __KERNEL__ */
+
+#ifdef NEED_INET_PROTOCOL
+#define inet_protocol net_protocol
+#endif
+
+#if defined(CONFIG_IPSEC_NAT_TRAVERSAL) && CONFIG_IPSEC_NAT_TRAVERSAL
+#define NAT_TRAVERSAL 1
+#else
+/* let people either #undef, or #define = 0 it */
+#ifdef CONFIG_IPSEC_NAT_TRAVERSAL
+#undef CONFIG_IPSEC_NAT_TRAVERSAL
+#endif
+#endif
+
+#ifndef IPSEC_DEFAULT_TTL
+#define IPSEC_DEFAULT_TTL 64
+#endif
+
+#define _IPSEC_PARAM_H_
+#endif /* _IPSEC_PARAM_H_ */
+
+/*
+ * $Log: ipsec_param.h,v $
+ * Revision 1.29.6.5  2008-02-18 16:27:19  paul
+ * include linux/ip.h for struct iphdr (bug 814) - patch by sedrez
+ *
+ * Revision 1.29.6.4  2007/09/05 02:30:06  paul
+ * KLIPS_SATOT macro. Patch by David McCullough
+ *
+ * Revision 1.29.6.3  2006/05/01 14:32:31  mcr
+ * added KLIPS_ERROR and make sure that things work without CONFIG_KLIPS_REGRESS.
+ *
+ * Revision 1.29.6.2  2005/11/27 21:40:14  paul
+ * Pull down TTL fixes from head. this fixes "Unknown symbol sysctl_ip_default_ttl"
+ * in for klips as module.
+ *
+ * Revision 1.29.6.1  2005/08/12 16:24:18  ken
+ * Pull in NAT-T compile logic from HEAD
+ *
+ * Revision 1.29  2005/01/26 00:50:35  mcr
+ *     adjustment of confusion of CONFIG_IPSEC_NAT vs CONFIG_KLIPS_NAT,
+ *     and make sure that NAT_TRAVERSAL is set as well to match
+ *     userspace compiles of code.
+ *
+ * Revision 1.28  2004/09/13 15:50:15  mcr
+ *     spell NEED_INET properly, not NET_INET.
+ *
+ * Revision 1.27  2004/09/13 02:21:45  mcr
+ *     always turn on IPIP mode.
+ *     #define inet_protocol if necessary.
+ *
+ * Revision 1.26  2004/08/17 03:25:43  mcr
+ *     freeswan->openswan.
+ *
+ * Revision 1.25  2004/07/10 19:08:41  mcr
+ *     CONFIG_IPSEC -> CONFIG_KLIPS.
+ *
+ * Revision 1.24  2004/04/05 19:55:06  mcr
+ * Moved from linux/include/freeswan/ipsec_param.h,v
+ *
+ * Revision 1.23  2003/12/13 19:10:16  mcr
+ *     refactored rcv and xmit code - same as FS 2.05.
+ *
+ * Revision 1.22  2003/10/31 02:27:05  mcr
+ *     pulled up port-selector patches and sa_id elimination.
+ *
+ * Revision 1.21.4.1  2003/10/29 01:10:19  mcr
+ *     elimited "struct sa_id"
+ *
+ * Revision 1.21  2003/04/03 17:38:18  rgb
+ * Centralised ipsec_kfree_skb and ipsec_dev_{get,put}.
+ * Change indentation for readability.
+ *
+ * Revision 1.20  2003/03/14 08:09:26  rgb
+ * Fixed up CONFIG_IPSEC_DYNDEV definitions.
+ *
+ * Revision 1.19  2003/01/30 02:31:43  rgb
+ *
+ * Rename SAref table macro names for clarity.
+ *
+ * Revision 1.18  2002/09/30 19:06:26  rgb
+ *     Reduce default table to 16 bits width.
+ *
+ * Revision 1.17  2002/09/20 15:40:29  rgb
+ * Define switch to activate new SAref code.
+ * Prefix macros with "IPSEC_".
+ * Rework saref freelist.
+ * Restrict some bits to kernel context for use to klips utils.
+ *
+ * Revision 1.16  2002/09/20 05:00:31  rgb
+ * Define switch to divulge hmac keys for debugging.
+ * Added IPOPTIONS switch.
+ *
+ * Revision 1.15  2002/09/19 02:34:24  mcr
+ *     define IPSEC_PROC_SUBDIRS if we are 2.4, and use that in ipsec_proc.c
+ *     to decide if we are to create /proc/net/ipsec/.
+ *
+ * Revision 1.14  2002/08/30 01:20:54  mcr
+ *     reorganized 2.0/2.2/2.4 procfs support macro so match
+ *     2.4 values/typedefs.
+ *
+ * Revision 1.13  2002/07/28 22:03:28  mcr
+ *     added some documentation to SA_REF_*
+ *     turned on fix for ESPIV attack, now that we have the attack code.
+ *
+ * Revision 1.12  2002/07/26 08:48:31  rgb
+ * Added SA ref table code.
+ *
+ * Revision 1.11  2002/07/23 02:57:45  rgb
+ * Define ARPHRD_VOID for < 2.4 kernels.
+ *
+ * Revision 1.10  2002/05/27 21:37:28  rgb
+ * Set the defaults sanely for those adventurous enough to try more than 1
+ * digit of ipsec devices.
+ *
+ * Revision 1.9  2002/05/27 18:56:07  rgb
+ * Convert to dynamic ipsec device allocation.
+ *
+ * Revision 1.8  2002/04/24 07:36:47  mcr
+ * Moved from ./klips/net/ipsec/ipsec_param.h,v
+ *
+ * Revision 1.7  2002/04/20 00:12:25  rgb
+ * Added esp IV CBC attack fix, disabled.
+ *
+ * Revision 1.6  2002/01/29 02:11:42  mcr
+ *     removal of kversions.h - sources that needed it now use ipsec_param.h.
+ *     updating of IPv6 structures to match latest in6.h version.
+ *     removed dead code from freeswan.h that also duplicated kversions.h
+ *     code.
+ *
+ * Revision 1.5  2002/01/28 19:22:01  mcr
+ *     by default, turn off LINEARIZE option
+ *     (let kversions.h turn it on)
+ *
+ * Revision 1.4  2002/01/20 20:19:36  mcr
+ *     renamed option to IP_FRAGMENT_LINEARIZE.
+ *
+ * Revision 1.3  2002/01/12 02:57:25  mcr
+ *     first regression test causes acquire messages to be lost
+ *     100% of the time. This is to help testing of pluto.
+ *
+ * Revision 1.2  2001/11/26 09:16:14  rgb
+ * Merge MCR's ipsec_sa, eroute, proc and struct lifetime changes.
+ *
+ * Revision 1.1.2.3  2001/10/23 04:40:16  mcr
+ *     added #define for DIVULGING session keys in debug output.
+ *
+ * Revision 1.1.2.2  2001/10/22 20:53:25  mcr
+ *     added a define to control forcing of DES parity.
+ *
+ * Revision 1.1.2.1  2001/09/25 02:20:19  mcr
+ *     many common kernel configuration questions centralized.
+ *     more things remain that should be moved from freeswan.h.
+ *
+ *
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ *
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/openswan/ipsec_policy.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,217 @@
+#ifndef _IPSEC_POLICY_H
+/*
+ * policy interface file between pluto and applications
+ * Copyright (C) 2003              Michael Richardson <mcr@freeswan.org>
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id: ipsec_policy.h,v 1.7.6.1 2005-07-26 01:53:07 ken Exp $
+ */
+#define        _IPSEC_POLICY_H         /* seen it, no need to see it again */
+
+
+/*
+ * this file defines an interface between an application (or rather an
+ * application library) and a key/policy daemon. It provides for inquiries
+ * as to the current state of a connected socket, as well as for general
+ * questions.
+ *
+ * In general, the interface is defined as a series of functional interfaces,
+ * and the policy messages should be internal. However, because this is in
+ * fact an ABI between pieces of the system that may get compiled and revised
+ * seperately, this ABI must be public and revision controlled.
+ *
+ * It is expected that the daemon will always support previous versions.
+ */
+
+#define IPSEC_POLICY_MSG_REVISION (unsigned)200305061
+
+enum ipsec_policy_command {
+  IPSEC_CMD_QUERY_FD       = 1,
+  IPSEC_CMD_QUERY_HOSTPAIR = 2,
+  IPSEC_CMD_QUERY_DSTONLY  = 3,
+};
+
+struct ipsec_policy_msg_head {
+  u_int32_t ipm_version;
+  u_int32_t ipm_msg_len;  
+  u_int32_t ipm_msg_type;
+  u_int32_t ipm_msg_seq;
+};
+
+enum ipsec_privacy_quality {
+  IPSEC_PRIVACY_NONE     = 0,
+  IPSEC_PRIVACY_INTEGRAL = 4,   /* not private at all. AH-like */
+  IPSEC_PRIVACY_UNKNOWN  = 8,   /* something is claimed, but details unavail */
+  IPSEC_PRIVACY_ROT13    = 12,  /* trivially breakable, i.e. 1DES */
+  IPSEC_PRIVACY_GAK      = 16,  /* known eavesdroppers */
+  IPSEC_PRIVACY_PRIVATE  = 32,  /* secure for at least a decade */
+  IPSEC_PRIVACY_STRONG   = 64,  /* ridiculously secure */
+  IPSEC_PRIVACY_TORTOISE = 192, /* even stronger, but very slow */
+  IPSEC_PRIVACY_OTP      = 224, /* some kind of *true* one time pad */
+};
+
+enum ipsec_bandwidth_quality {
+  IPSEC_QOS_UNKNOWN = 0,       /* unknown bandwidth */
+  IPSEC_QOS_INTERACTIVE = 16,  /* reasonably moderate jitter, moderate fast.
+                                 Good enough for telnet/ssh. */
+  IPSEC_QOS_VOIP        = 32,  /* faster crypto, predicable jitter */
+  IPSEC_QOS_FTP         = 64,  /* higher throughput crypto, perhaps hardware
+                                 offloaded, but latency/jitter may be bad */
+  IPSEC_QOS_WIRESPEED   = 128, /* expect to be able to fill your pipe */
+};
+
+/* moved from programs/pluto/constants.h */
+/* IPsec AH transform values
+ * RFC2407 The Internet IP security Domain of Interpretation for ISAKMP 4.4.3
+ * and in http://www.iana.org/assignments/isakmp-registry
+ */
+enum ipsec_authentication_algo {
+  AH_MD5=2,
+  AH_SHA=3,
+  AH_DES=4,
+  AH_SHA2_256=5,
+  AH_SHA2_384=6,
+  AH_SHA2_512=7
+};
+
+/* IPsec ESP transform values
+ * RFC2407 The Internet IP security Domain of Interpretation for ISAKMP 4.4.4
+ * and from http://www.iana.org/assignments/isakmp-registry
+ */
+
+enum ipsec_cipher_algo {
+  ESP_reserved=0,
+  ESP_DES_IV64=1,
+  ESP_DES=2,
+  ESP_3DES=3,
+  ESP_RC5=4,
+  ESP_IDEA=5,
+  ESP_CAST=6,
+  ESP_BLOWFISH=7,
+  ESP_3IDEA=8,
+  ESP_DES_IV32=9,
+  ESP_RC4=10,
+  ESP_NULL=11,
+  ESP_AES=12,         /* 128 bit AES */
+};
+
+/* IPCOMP transform values
+ * RFC2407 The Internet IP security Domain of Interpretation for ISAKMP 4.4.5
+ */
+
+enum ipsec_comp_algo {
+  IPCOMP_OUI=               1,
+  IPCOMP_DEFLATE=           2,
+  IPCOMP_LZS=               3,
+  IPCOMP_V42BIS=            4
+};
+
+/* Identification type values
+ * RFC 2407 The Internet IP security Domain of Interpretation for ISAKMP 4.6.2.1 
+ */
+
+enum ipsec_id_type {
+  ID_IMPOSSIBLE=             (-2),     /* private to Pluto */
+  ID_MYID=                   (-1),     /* private to Pluto */
+  ID_NONE=                     0,      /* private to Pluto */
+  ID_IPV4_ADDR=                1,
+  ID_FQDN=                     2,
+  ID_USER_FQDN=                3,
+  ID_IPV4_ADDR_SUBNET=         4,
+  ID_IPV6_ADDR=                5,
+  ID_IPV6_ADDR_SUBNET=         6,
+  ID_IPV4_ADDR_RANGE=          7,
+  ID_IPV6_ADDR_RANGE=          8,
+  ID_DER_ASN1_DN=              9,
+  ID_DER_ASN1_GN=              10,
+  ID_KEY_ID=                   11
+};
+
+/* Certificate type values
+ * RFC 2408 ISAKMP, chapter 3.9
+ */
+enum ipsec_cert_type {
+  CERT_NONE=                   0,  /* none, or guess from file contents */
+  CERT_PKCS7_WRAPPED_X509=     1,  /* self-signed certificate from disk */
+  CERT_PGP=                    2,
+  CERT_DNS_SIGNED_KEY=         3,  /* KEY RR from DNS */
+  CERT_X509_SIGNATURE=         4,
+  CERT_X509_KEY_EXCHANGE=      5,
+  CERT_KERBEROS_TOKENS=                6,
+  CERT_CRL=                    7,
+  CERT_ARL=                    8,
+  CERT_SPKI=                   9,
+  CERT_X509_ATTRIBUTE=         10,
+  CERT_RAW_RSA=                 11, /* raw RSA from config file */ 
+};
+
+/* a SIG record in ASCII */
+struct ipsec_dns_sig {
+  char fqdn[256];
+  char dns_sig[768];     /* empty string if not signed */
+};
+
+struct ipsec_raw_key {
+  char id_name[256];
+  char fs_keyid[8];
+};
+
+struct ipsec_identity {
+  enum ipsec_id_type     ii_type;
+  enum ipsec_cert_type   ii_format;
+  union {
+    struct ipsec_dns_sig ipsec_dns_signed;
+    /* some thing for PGP */
+    /* some thing for PKIX */
+    struct ipsec_raw_key ipsec_raw_key;
+  } ii_credential;
+};
+
+#define IPSEC_MAX_CREDENTIALS 32
+
+struct ipsec_policy_cmd_query {
+  struct ipsec_policy_msg_head head;
+
+  /* Query section */
+  ip_address query_local;     /* us   */
+  ip_address query_remote;    /* them */
+  u_int8_t proto;             /* TCP, ICMP, etc. */
+  u_short src_port, dst_port;
+
+  /* Answer section */
+  enum ipsec_privacy_quality     strength;
+  enum ipsec_bandwidth_quality   bandwidth;
+  enum ipsec_authentication_algo auth_detail;  
+  enum ipsec_cipher_algo         esp_detail;
+  enum ipsec_comp_algo           comp_detail;
+
+  int                            credential_count;
+
+  struct ipsec_identity credentials[IPSEC_MAX_CREDENTIALS];
+};
+
+#define IPSEC_POLICY_SOCKET "/var/run/pluto/pluto.info"
+
+/* prototypes */
+extern err_t ipsec_policy_lookup(int fd, struct ipsec_policy_cmd_query *result);
+extern err_t ipsec_policy_init(void);
+extern err_t ipsec_policy_final(void);
+extern err_t ipsec_policy_readmsg(int policysock,
+                                 unsigned char *buf, size_t buflen);
+extern err_t ipsec_policy_sendrecv(unsigned char *buf, size_t buflen);
+extern err_t ipsec_policy_cgilookup(struct ipsec_policy_cmd_query *result);
+
+
+extern const char *ipsec_policy_version_code(void);
+extern const char *ipsec_policy_version_string(void);
+
+#endif /* _IPSEC_POLICY_H */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/openswan/ipsec_proto.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,199 @@
+/*
+ * @(#) prototypes for FreeSWAN functions 
+ *
+ * Copyright (C) 2001  Richard Guy Briggs  <rgb@freeswan.org>
+ *                 and Michael Richardson  <mcr@freeswan.org>
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id: ipsec_proto.h,v 1.14 2005-04-29 04:50:03 mcr Exp $
+ *
+ */
+
+#ifndef _IPSEC_PROTO_H_
+
+#include "ipsec_param.h"
+
+/* 
+ * This file is a kernel only file that declares prototypes for
+ * all intra-module function calls and global data structures.
+ *
+ * Include this file last.
+ *
+ */
+
+/* forward references */
+enum ipsec_direction;
+enum ipsec_life_type;
+struct ipsec_lifetime64;
+struct ident;
+struct sockaddr_encap;
+struct ipsec_sa;
+
+/* ipsec_init.c */
+extern struct prng ipsec_prng;
+
+/* ipsec_sa.c */
+extern struct ipsec_sa *ipsec_sadb_hash[SADB_HASHMOD];
+extern spinlock_t       tdb_lock;
+extern int ipsec_sadb_init(void);
+extern int ipsec_sadb_cleanup(__u8);
+
+extern struct ipsec_sa *ipsec_sa_alloc(int*error); 
+
+
+extern struct ipsec_sa *ipsec_sa_getbyid(ip_said *);
+extern int ipsec_sa_put(struct ipsec_sa *);
+extern /* void */ int ipsec_sa_del(struct ipsec_sa *);
+extern /* void */ int ipsec_sa_delchain(struct ipsec_sa *);
+extern /* void */ int ipsec_sa_add(struct ipsec_sa *);
+
+extern int ipsec_sa_init(struct ipsec_sa *ipsp);
+extern int ipsec_sa_wipe(struct ipsec_sa *ipsp);
+
+/* debug declarations */
+
+/* ipsec_proc.c */
+extern int  ipsec_proc_init(void);
+extern void ipsec_proc_cleanup(void);
+
+/* ipsec_rcv.c */
+extern int ipsec_rcv(struct sk_buff *skb);
+extern int klips26_rcv_encap(struct sk_buff *skb, __u16 encap_type);
+
+/* ipsec_xmit.c */
+struct ipsec_xmit_state;
+extern enum ipsec_xmit_value ipsec_xmit_sanity_check_dev(struct ipsec_xmit_state *ixs);
+extern enum ipsec_xmit_value ipsec_xmit_sanity_check_skb(struct ipsec_xmit_state *ixs);
+extern void ipsec_print_ip(struct iphdr *ip);
+
+
+
+/* ipsec_radij.c */
+extern int ipsec_makeroute(struct sockaddr_encap *ea,
+                          struct sockaddr_encap *em,
+                          ip_said said,
+                          uint32_t pid,
+                          struct sk_buff *skb,
+                          struct ident *ident_s,
+                          struct ident *ident_d);
+
+extern int ipsec_breakroute(struct sockaddr_encap *ea,
+                           struct sockaddr_encap *em,
+                           struct sk_buff **first,
+                           struct sk_buff **last);
+
+int ipsec_radijinit(void);
+int ipsec_cleareroutes(void);
+int ipsec_radijcleanup(void);
+
+/* ipsec_life.c */
+extern enum ipsec_life_alive ipsec_lifetime_check(struct ipsec_lifetime64 *il64,
+                                                 const char *lifename,
+                                                 const char *saname,
+                                                 enum ipsec_life_type ilt,
+                                                 enum ipsec_direction idir,
+                                                 struct ipsec_sa *ips);
+
+
+extern int ipsec_lifetime_format(char *buffer,
+                                int   buflen,
+                                char *lifename,
+                                enum ipsec_life_type timebaselife,
+                                struct ipsec_lifetime64 *lifetime);
+
+extern void ipsec_lifetime_update_hard(struct ipsec_lifetime64 *lifetime,
+                                      __u64 newvalue);
+
+extern void ipsec_lifetime_update_soft(struct ipsec_lifetime64 *lifetime,
+                                      __u64 newvalue);
+
+/* ipsec_snprintf.c */
+extern int ipsec_snprintf(char * buf, ssize_t size, const char *fmt, ...);
+extern void ipsec_dmp_block(char *s, caddr_t bb, int len);
+
+
+/* ipsec_alg.c */
+extern int ipsec_alg_init(void);
+
+
+#ifdef CONFIG_KLIPS_DEBUG
+
+extern int debug_xform;
+extern int debug_eroute;
+extern int debug_spi;
+extern int debug_netlink;
+
+#endif /* CONFIG_KLIPS_DEBUG */
+
+
+
+
+#define _IPSEC_PROTO_H
+#endif /* _IPSEC_PROTO_H_ */
+
+/*
+ * $Log: ipsec_proto.h,v $
+ * Revision 1.14  2005-04-29 04:50:03  mcr
+ *     prototypes for xmit and alg code.
+ *
+ * Revision 1.13  2005/04/17 03:46:07  mcr
+ *     added prototypes for ipsec_rcv() routines.
+ *
+ * Revision 1.12  2005/04/14 20:28:37  mcr
+ *     added additional prototypes.
+ *
+ * Revision 1.11  2005/04/14 01:16:28  mcr
+ *     add prototypes for snprintf.
+ *
+ * Revision 1.10  2005/04/13 22:47:28  mcr
+ *     make sure that forward references are available.
+ *
+ * Revision 1.9  2004/07/10 19:08:41  mcr
+ *     CONFIG_IPSEC -> CONFIG_KLIPS.
+ *
+ * Revision 1.8  2004/04/05 19:55:06  mcr
+ * Moved from linux/include/freeswan/ipsec_proto.h,v
+ *
+ * Revision 1.7  2003/10/31 02:27:05  mcr
+ *     pulled up port-selector patches and sa_id elimination.
+ *
+ * Revision 1.6.30.1  2003/10/29 01:10:19  mcr
+ *     elimited "struct sa_id"
+ *
+ * Revision 1.6  2002/05/23 07:13:48  rgb
+ * Added ipsec_sa_put() for releasing an ipsec_sa refcount.
+ *
+ * Revision 1.5  2002/05/14 02:36:40  rgb
+ * Converted reference from ipsec_sa_put to ipsec_sa_add to avoid confusion
+ * with "put" usage in the kernel.
+ *
+ * Revision 1.4  2002/04/24 07:36:47  mcr
+ * Moved from ./klips/net/ipsec/ipsec_proto.h,v
+ *
+ * Revision 1.3  2002/04/20 00:12:25  rgb
+ * Added esp IV CBC attack fix, disabled.
+ *
+ * Revision 1.2  2001/11/26 09:16:15  rgb
+ * Merge MCR's ipsec_sa, eroute, proc and struct lifetime changes.
+ *
+ * Revision 1.1.2.1  2001/09/25 02:21:01  mcr
+ *     ipsec_proto.h created to keep prototypes rather than deal with
+ *     cyclic dependancies of structures and prototypes in .h files.
+ *
+ *
+ *
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ *
+ */
+
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/openswan/ipsec_radij.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,179 @@
+/*
+ * @(#) Definitions relevant to the IPSEC <> radij tree interfacing
+ * Copyright (C) 1996, 1997  John Ioannidis.
+ * Copyright (C) 1998, 1999, 2000, 2001  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id: ipsec_radij.h,v 1.22 2004-07-10 19:08:41 mcr Exp $
+ */
+
+#ifndef _IPSEC_RADIJ_H
+
+#include <openswan.h>
+
+int ipsec_walk(char *);
+
+int ipsec_rj_walker_procprint(struct radij_node *, void *);
+int ipsec_rj_walker_delete(struct radij_node *, void *);
+
+/* This structure is used to pass information between
+ * ipsec_eroute_get_info and ipsec_rj_walker_procprint
+ * (through rj_walktree) and between calls of ipsec_rj_walker_procprint.
+ */
+struct wsbuf
+{
+       /* from caller of ipsec_eroute_get_info: */
+       char *const buffer;     /* start of buffer provided */
+       const int length;       /* length of buffer provided */
+       const off_t offset;     /* file position of first character of interest */
+       /* accumulated by ipsec_rj_walker_procprint: */
+       int len;        /* number of character filled into buffer */
+       off_t begin;    /* file position contained in buffer[0] (<=offset) */
+};
+
+extern struct radij_node_head *rnh;
+extern spinlock_t eroute_lock;
+
+struct eroute * ipsec_findroute(struct sockaddr_encap *);
+
+#define O1(x) (int)(((x)>>24)&0xff)
+#define O2(x) (int)(((x)>>16)&0xff)
+#define O3(x) (int)(((x)>>8)&0xff)
+#define O4(x) (int)(((x))&0xff)
+
+#ifdef CONFIG_KLIPS_DEBUG
+extern int debug_radij;
+void rj_dumptrees(void);
+
+#define DB_RJ_DUMPTREES        0x0001
+#define DB_RJ_FINDROUTE 0x0002
+#endif /* CONFIG_KLIPS_DEBUG */
+
+#define _IPSEC_RADIJ_H
+#endif
+
+/*
+ * $Log: ipsec_radij.h,v $
+ * Revision 1.22  2004-07-10 19:08:41  mcr
+ *     CONFIG_IPSEC -> CONFIG_KLIPS.
+ *
+ * Revision 1.21  2004/04/29 11:06:42  ken
+ * Last bits from 2.06 procfs updates
+ *
+ * Revision 1.20  2004/04/06 02:49:08  mcr
+ *     pullup of algo code from alg-branch.
+ *
+ * Revision 1.19  2004/04/05 19:55:06  mcr
+ * Moved from linux/include/freeswan/ipsec_radij.h,v
+ *
+ * Revision 1.18  2002/04/24 07:36:47  mcr
+ * Moved from ./klips/net/ipsec/ipsec_radij.h,v
+ *
+ * Revision 1.17  2001/11/26 09:23:49  rgb
+ * Merge MCR's ipsec_sa, eroute, proc and struct lifetime changes.
+ *
+ * Revision 1.16.2.1  2001/09/25 02:21:17  mcr
+ *     ipsec_proto.h created to keep prototypes rather than deal with
+ *     cyclic dependancies of structures and prototypes in .h files.
+ *
+ * Revision 1.16  2001/09/15 16:24:04  rgb
+ * Re-inject first and last HOLD packet when an eroute REPLACE is done.
+ *
+ * Revision 1.15  2001/09/14 16:58:37  rgb
+ * Added support for storing the first and last packets through a HOLD.
+ *
+ * Revision 1.14  2001/09/08 21:13:32  rgb
+ * Added pfkey ident extension support for ISAKMPd. (NetCelo)
+ *
+ * Revision 1.13  2001/06/14 19:35:09  rgb
+ * Update copyright date.
+ *
+ * Revision 1.12  2001/05/27 06:12:11  rgb
+ * Added structures for pid, packet count and last access time to eroute.
+ * Added packet count to beginning of /proc/net/ipsec_eroute.
+ *
+ * Revision 1.11  2000/09/08 19:12:56  rgb
+ * Change references from DEBUG_IPSEC to CONFIG_IPSEC_DEBUG.
+ *
+ * Revision 1.10  1999/11/17 15:53:39  rgb
+ * Changed all occurrences of #include "../../../lib/freeswan.h"
+ * to #include <freeswan.h> which works due to -Ilibfreeswan in the
+ * klips/net/ipsec/Makefile.
+ *
+ * Revision 1.9  1999/10/01 00:01:23  rgb
+ * Added eroute structure locking.
+ *
+ * Revision 1.8  1999/04/11 00:28:59  henry
+ * GPL boilerplate
+ *
+ * Revision 1.7  1999/04/06 04:54:26  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.6  1999/01/22 06:23:26  rgb
+ * Cruft clean-out.
+ *
+ * Revision 1.5  1998/10/25 02:42:08  rgb
+ * Change return type on ipsec_breakroute and ipsec_makeroute and add an
+ * argument to be able to transmit more infomation about errors.
+ *
+ * Revision 1.4  1998/10/19 14:44:29  rgb
+ * Added inclusion of freeswan.h.
+ * sa_id structure implemented and used: now includes protocol.
+ *
+ * Revision 1.3  1998/07/28 00:03:31  rgb
+ * Comment out temporary inet_nto4u() kluge.
+ *
+ * Revision 1.2  1998/07/14 18:22:00  rgb
+ * Add function to clear the eroute table.
+ *
+ * Revision 1.1  1998/06/18 21:27:49  henry
+ * move sources from klips/src to klips/net/ipsec, to keep stupid
+ * kernel-build scripts happier in the presence of symlinks
+ *
+ * Revision 1.5  1998/05/25 20:30:38  rgb
+ * Remove temporary ipsec_walk, rj_deltree and rj_delnodes functions.
+ *
+ * Rename ipsec_rj_walker (ipsec_walk) to ipsec_rj_walker_procprint and
+ * add ipsec_rj_walker_delete.
+ *
+ * Revision 1.4  1998/05/21 13:02:56  rgb
+ * Imported definitions from ipsec_radij.c and radij.c to support /proc 3k
+ * limit fix.
+ *
+ * Revision 1.3  1998/04/21 21:29:09  rgb
+ * Rearrange debug switches to change on the fly debug output from user
+ * space.  Only kernel changes checked in at this time.  radij.c was also
+ * changed to temporarily remove buggy debugging code in rj_delete causing
+ * an OOPS and hence, netlink device open errors.
+ *
+ * Revision 1.2  1998/04/14 17:30:39  rgb
+ * Fix up compiling errors for radij tree memory reclamation.
+ *
+ * Revision 1.1  1998/04/09 03:06:10  henry
+ * sources moved up from linux/net/ipsec
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:04  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.4  1997/01/15 01:28:15  ji
+ * No changes.
+ *
+ * Revision 0.3  1996/11/20 14:39:04  ji
+ * Minor cleanups.
+ * Rationalized debugging code.
+ *
+ * Revision 0.2  1996/11/02 00:18:33  ji
+ * First limited release.
+ *
+ *
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/openswan/ipsec_rcv.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,199 @@
+/*
+ * 
+ * Copyright (C) 1996, 1997  John Ioannidis.
+ * Copyright (C) 1998, 1999, 2000, 2001  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id: ipsec_rcv.h,v 1.28.2.2 2006-10-06 21:39:26 paul Exp $
+ */
+
+#ifndef IPSEC_RCV_H
+#define IPSEC_RCV_H
+
+#include "openswan/ipsec_auth.h"
+
+#define DB_RX_PKTRX    0x0001
+#define DB_RX_PKTRX2   0x0002
+#define DB_RX_DMP      0x0004
+#define DB_RX_IPSA     0x0010
+#define DB_RX_XF       0x0020
+#define DB_RX_IPAD     0x0040
+#define DB_RX_INAU     0x0080
+#define DB_RX_OINFO    0x0100
+#define DB_RX_OINFO2   0x0200
+#define DB_RX_OH       0x0400
+#define DB_RX_REPLAY   0x0800
+
+#ifdef __KERNEL__
+/* struct options; */
+
+#define __NO_VERSION__
+#ifndef AUTOCONF_INCLUDED
+#include <linux/config.h>      /* for CONFIG_IP_FORWARD */
+#endif
+#ifdef CONFIG_MODULES
+#include <linux/module.h>
+#endif
+#include <linux/version.h>
+#include <openswan.h>
+
+#define IPSEC_BIRTH_TEMPLATE_MAXLEN 256
+
+struct ipsec_birth_reply {
+  int            packet_template_len;
+  unsigned char  packet_template[IPSEC_BIRTH_TEMPLATE_MAXLEN];
+};
+
+extern struct ipsec_birth_reply ipsec_ipv4_birth_packet;
+extern struct ipsec_birth_reply ipsec_ipv6_birth_packet;
+
+enum ipsec_rcv_value {
+       IPSEC_RCV_LASTPROTO=1,
+       IPSEC_RCV_OK=0,
+       IPSEC_RCV_BADPROTO=-1,
+       IPSEC_RCV_BADLEN=-2,
+       IPSEC_RCV_ESP_BADALG=-3,
+       IPSEC_RCV_3DES_BADBLOCKING=-4,
+       IPSEC_RCV_ESP_DECAPFAIL=-5,
+       IPSEC_RCV_DECAPFAIL=-6,
+       IPSEC_RCV_SAIDNOTFOUND=-7,
+       IPSEC_RCV_IPCOMPALONE=-8,
+       IPSEC_RCV_IPCOMPFAILED=-10,
+       IPSEC_RCV_SAIDNOTLIVE=-11,
+       IPSEC_RCV_FAILEDINBOUND=-12,
+       IPSEC_RCV_LIFETIMEFAILED=-13,
+       IPSEC_RCV_BADAUTH=-14,
+       IPSEC_RCV_REPLAYFAILED=-15,
+       IPSEC_RCV_AUTHFAILED=-16,
+       IPSEC_RCV_REPLAYROLLED=-17,
+       IPSEC_RCV_BAD_DECRYPT=-18
+};
+
+struct ipsec_rcv_state {
+       struct sk_buff *skb;
+       struct net_device_stats *stats;
+       struct iphdr    *ipp;          /* the IP header */
+       struct ipsec_sa *ipsp;         /* current SA being processed */
+       int len;                       /* length of packet */
+       int ilen;                      /* length of inner payload (-authlen) */
+       int authlen;                   /* how big is the auth data at end */
+       int hard_header_len;           /* layer 2 size */
+       int iphlen;                    /* how big is IP header */
+       struct auth_alg *authfuncs;
+       ip_said said;
+       char   sa[SATOT_BUF];
+       size_t sa_len;
+       __u8 next_header;
+       __u8 hash[AH_AMAX];
+       char ipsaddr_txt[ADDRTOA_BUF];
+       char ipdaddr_txt[ADDRTOA_BUF];
+       __u8 *octx;
+       __u8 *ictx;
+       int ictx_len;
+       int octx_len;
+       union {
+               struct {
+                       struct esphdr *espp;
+               } espstuff;
+               struct {
+                       struct ahhdr *ahp;
+               } ahstuff;
+               struct {
+                       struct ipcomphdr *compp;
+               } ipcompstuff;
+       } protostuff;
+#ifdef CONFIG_IPSEC_NAT_TRAVERSAL
+       __u8            natt_type;
+       __u16           natt_sport;
+       __u16           natt_dport;
+       int             natt_len; 
+#endif  
+};
+
+extern int
+#ifdef PROTO_HANDLER_SINGLE_PARM
+ipsec_rcv(struct sk_buff *skb);
+#else /* PROTO_HANDLER_SINGLE_PARM */
+ipsec_rcv(struct sk_buff *skb,
+         unsigned short xlen);
+#endif /* PROTO_HANDLER_SINGLE_PARM */
+
+#ifdef CONFIG_KLIPS_DEBUG
+extern int debug_rcv;
+#define ipsec_rcv_dmp(_x,_y, _z) if (debug_rcv && sysctl_ipsec_debug_verbose) ipsec_dmp_block(_x,_y,_z)
+#else
+#define ipsec_rcv_dmp(_x,_y, _z) do {} while(0)
+#endif /* CONFIG_KLIPS_DEBUG */
+
+extern int sysctl_ipsec_inbound_policy_check;
+#endif /* __KERNEL__ */
+
+extern int klips26_rcv_encap(struct sk_buff *skb, __u16 encap_type);
+
+
+#endif /* IPSEC_RCV_H */
+
+/*
+ * $Log: ipsec_rcv.h,v $
+ * Revision 1.28.2.2  2006-10-06 21:39:26  paul
+ * Fix for 2.6.18+ only include linux/config.h if AUTOCONF_INCLUDED is not
+ * set. This is defined through autoconf.h which is included through the
+ * linux kernel build macros.
+ *
+ * Revision 1.28.2.1  2006/07/10 15:52:20  paul
+ * Fix for bug #642 by Bart Trojanowski
+ *
+ * Revision 1.28  2005/05/11 00:59:45  mcr
+ *     do not call debug routines if !defined KLIPS_DEBUG.
+ *
+ * Revision 1.27  2005/04/29 04:59:46  mcr
+ *     use ipsec_dmp_block.
+ *
+ * Revision 1.26  2005/04/13 22:48:35  mcr
+ *     added comments, and removed some log.
+ *     removed Linux 2.0 support.
+ *
+ * Revision 1.25  2005/04/08 18:25:37  mcr
+ *     prototype klips26 encap receive function
+ *
+ * Revision 1.24  2004/08/20 21:45:37  mcr
+ *     CONFIG_KLIPS_NAT_TRAVERSAL is not used in an attempt to
+ *     be 26sec compatible. But, some defines where changed.
+ *
+ * Revision 1.23  2004/08/03 18:17:40  mcr
+ *     in 2.6, use "net_device" instead of #define device->net_device.
+ *     this probably breaks 2.0 compiles.
+ *
+ * Revision 1.22  2004/07/10 19:08:41  mcr
+ *     CONFIG_IPSEC -> CONFIG_KLIPS.
+ *
+ * Revision 1.21  2004/04/06 02:49:08  mcr
+ *     pullup of algo code from alg-branch.
+ *
+ * Revision 1.20  2004/04/05 19:55:06  mcr
+ * Moved from linux/include/freeswan/ipsec_rcv.h,v
+ *
+ * Revision 1.19  2003/12/15 18:13:09  mcr
+ *     when compiling with NAT traversal, don't assume that the
+ *     kernel has been patched, unless CONFIG_IPSEC_NAT_NON_ESP
+ *     is set.
+ *
+ * history elided 2005-04-12.
+ *
+ * Local Variables:
+ * c-basic-offset:8
+ * c-style:linux
+ * End:
+ *
+ */
+
+
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/openswan/ipsec_sa.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,361 @@
+/*
+ * @(#) Definitions of IPsec Security Association (ipsec_sa)
+ *
+ * Copyright (C) 2001, 2002, 2003
+ *                      Richard Guy Briggs  <rgb@freeswan.org>
+ *                  and Michael Richardson  <mcr@freeswan.org>
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id: ipsec_sa.h,v 1.23.2.1 2007-09-05 02:31:15 paul Exp $
+ *
+ * This file derived from ipsec_xform.h on 2001/9/18 by mcr.
+ *
+ */
+
+/* 
+ * This file describes the IPsec Security Association Structure.
+ *
+ * This structure keeps track of a single transform that may be done
+ * to a set of packets. It can describe applying the transform or
+ * apply the reverse. (e.g. compression vs expansion). However, it
+ * only describes one at a time. To describe both, two structures would
+ * be used, but since the sides of the transform are performed 
+ * on different machines typically it is usual to have only one side
+ * of each association.
+ * 
+ */
+
+#ifndef _IPSEC_SA_H_
+
+#ifdef __KERNEL__
+#include "openswan/ipsec_stats.h"
+#include "openswan/ipsec_life.h"
+#include "openswan/ipsec_eroute.h"
+#endif /* __KERNEL__ */
+#include "openswan/ipsec_param.h"
+
+#include "pfkeyv2.h"
+
+
+/* SAs are held in a table.
+ * Entries in this table are referenced by IPsecSAref_t values.
+ * IPsecSAref_t values are conceptually subscripts.  Because
+ * we want to allocate the table piece-meal, the subscripting
+ * is implemented with two levels, a bit like paged virtual memory.
+ * This representation mechanism is known as an Iliffe Vector.
+ *
+ * The Main table (AKA the refTable) consists of 2^IPSEC_SA_REF_MAINTABLE_IDX_WIDTH
+ * pointers to subtables.
+ * Each subtable has 2^IPSEC_SA_REF_SUBTABLE_IDX_WIDTH entries, each of which
+ * is a pointer to an SA.
+ *
+ * An IPsecSAref_t contains either an exceptional value (signified by the
+ * high-order bit being on) or a reference to a table entry.  A table entry
+ * reference has the subtable subscript in the low-order
+ * IPSEC_SA_REF_SUBTABLE_IDX_WIDTH bits and the Main table subscript
+ * in the next lowest IPSEC_SA_REF_MAINTABLE_IDX_WIDTH bits.
+ *
+ * The Maintable entry for an IPsecSAref_t x, a pointer to its subtable, is
+ * IPsecSAref2table(x).  It is of type struct IPsecSArefSubTable *.
+ *
+ * The pointer to the SA for x is IPsecSAref2SA(x).  It is of type
+ * struct ipsec_sa*.  The macro definition clearly shows the two-level
+ * access needed to find the SA pointer.
+ *
+ * The Maintable is allocated when IPsec is initialized.
+ * Each subtable is allocated when needed, but the first is allocated
+ * when IPsec is initialized.
+ *
+ * IPsecSAref_t is designed to be smaller than an NFmark so that
+ * they can be stored in NFmarks and still leave a few bits for other
+ * purposes.  The spare bits are in the low order of the NFmark
+ * but in the high order of the IPsecSAref_t, so conversion is required.
+ * We pick the upper bits of NFmark on the theory that they are less likely to
+ * interfere with more pedestrian uses of nfmark.
+ */
+
+
+typedef unsigned short int IPsecRefTableUnusedCount;
+
+#define IPSEC_SA_REF_TABLE_NUM_ENTRIES (1 << IPSEC_SA_REF_TABLE_IDX_WIDTH)
+
+#ifdef __KERNEL__
+#if ((IPSEC_SA_REF_TABLE_IDX_WIDTH - (1 + IPSEC_SA_REF_MAINTABLE_IDX_WIDTH)) < 0)
+#error "IPSEC_SA_REF_TABLE_IDX_WIDTH("IPSEC_SA_REF_TABLE_IDX_WIDTH") MUST be < 1 + IPSEC_SA_REF_MAINTABLE_IDX_WIDTH("IPSEC_SA_REF_MAINTABLE_IDX_WIDTH")"
+#endif
+
+#define IPSEC_SA_REF_SUBTABLE_IDX_WIDTH (IPSEC_SA_REF_TABLE_IDX_WIDTH - IPSEC_SA_REF_MAINTABLE_IDX_WIDTH)
+
+#define IPSEC_SA_REF_MAINTABLE_NUM_ENTRIES (1 << IPSEC_SA_REF_MAINTABLE_IDX_WIDTH)
+#define IPSEC_SA_REF_SUBTABLE_NUM_ENTRIES (1 << IPSEC_SA_REF_SUBTABLE_IDX_WIDTH)
+
+#ifdef CONFIG_NETFILTER
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,20)
+#define                nfmark  mark
+#endif
+#define IPSEC_SA_REF_HOST_FIELD(x) ((struct sk_buff*)(x))->nfmark
+#define IPSEC_SA_REF_HOST_FIELD_TYPE typeof(IPSEC_SA_REF_HOST_FIELD(NULL))
+#else /* CONFIG_NETFILTER */
+/* just make it work for now, it doesn't matter, since there is no nfmark */
+#define IPSEC_SA_REF_HOST_FIELD_TYPE unsigned long
+#endif /* CONFIG_NETFILTER */
+#define IPSEC_SA_REF_HOST_FIELD_WIDTH (8 * sizeof(IPSEC_SA_REF_HOST_FIELD_TYPE))
+#define IPSEC_SA_REF_FIELD_WIDTH (8 * sizeof(IPsecSAref_t))
+
+#define IPSEC_SA_REF_MASK        (IPSEC_SAREF_NULL >> (IPSEC_SA_REF_FIELD_WIDTH - IPSEC_SA_REF_TABLE_IDX_WIDTH))
+#define IPSEC_SA_REF_TABLE_MASK ((IPSEC_SAREF_NULL >> (IPSEC_SA_REF_FIELD_WIDTH - IPSEC_SA_REF_MAINTABLE_IDX_WIDTH)) << IPSEC_SA_REF_SUBTABLE_IDX_WIDTH)
+#define IPSEC_SA_REF_ENTRY_MASK  (IPSEC_SAREF_NULL >> (IPSEC_SA_REF_FIELD_WIDTH - IPSEC_SA_REF_SUBTABLE_IDX_WIDTH))
+
+#define IPsecSAref2table(x) (((x) & IPSEC_SA_REF_TABLE_MASK) >> IPSEC_SA_REF_SUBTABLE_IDX_WIDTH)
+#define IPsecSAref2entry(x) ((x) & IPSEC_SA_REF_ENTRY_MASK)
+#define IPsecSArefBuild(x,y) (((x) << IPSEC_SA_REF_SUBTABLE_IDX_WIDTH) + (y))
+
+#define IPsecSAref2SA(x) (ipsec_sadb.refTable[IPsecSAref2table(x)]->entry[IPsecSAref2entry(x)])
+#define IPsecSA2SAref(x) ((x)->ips_ref)
+
+#define EMT_INBOUND    0x01    /* SA direction, 1=inbound */
+
+/* 'struct ipsec_sa' should be 64bit aligned when allocated. */
+struct ipsec_sa                                
+{
+       IPsecSAref_t    ips_ref;                /* reference table entry number */
+       atomic_t        ips_refcount;           /* reference count for this struct */
+       struct ipsec_sa *ips_hnext;             /* next in hash chain */
+       struct ipsec_sa *ips_inext;             /* pointer to next xform */
+       struct ipsec_sa *ips_onext;             /* pointer to prev xform */
+
+       struct ifnet    *ips_rcvif;             /* related rcv encap interface */
+
+       ip_said         ips_said;               /* SA ID */
+
+       __u32           ips_seq;                /* seq num of msg that initiated this SA */
+       __u32           ips_pid;                /* PID of process that initiated this SA */
+       __u8            ips_authalg;            /* auth algorithm for this SA */
+       __u8            ips_encalg;             /* enc algorithm for this SA */
+
+       struct ipsec_stats ips_errs;
+
+       __u8            ips_replaywin;          /* replay window size */
+       enum sadb_sastate ips_state;            /* state of SA */
+       __u32           ips_replaywin_lastseq;  /* last pkt sequence num */
+       __u64           ips_replaywin_bitmap;   /* bitmap of received pkts */
+       __u32           ips_replaywin_maxdiff;  /* max pkt sequence difference */
+
+       __u32           ips_flags;              /* generic xform flags */
+
+
+       struct ipsec_lifetimes ips_life;        /* lifetime records */
+
+       /* selector information */
+        __u8            ips_transport_protocol; /* protocol for this SA, if ports are involved */
+       struct sockaddr*ips_addr_s;             /* src sockaddr */
+       struct sockaddr*ips_addr_d;             /* dst sockaddr */
+       struct sockaddr*ips_addr_p;             /* proxy sockaddr */
+       __u16           ips_addr_s_size;
+       __u16           ips_addr_d_size;
+       __u16           ips_addr_p_size;
+       ip_address      ips_flow_s;
+       ip_address      ips_flow_d;
+       ip_address      ips_mask_s;
+       ip_address      ips_mask_d;
+
+       __u16           ips_key_bits_a;         /* size of authkey in bits */
+       __u16           ips_auth_bits;          /* size of authenticator in bits */
+       __u16           ips_key_bits_e;         /* size of enckey in bits */
+       __u16           ips_iv_bits;            /* size of IV in bits */
+       __u8            ips_iv_size;
+       __u16           ips_key_a_size;
+       __u16           ips_key_e_size;
+
+       caddr_t         ips_key_a;              /* authentication key */
+       caddr_t         ips_key_e;              /* encryption key */
+       caddr_t         ips_iv;                 /* Initialisation Vector */
+
+       struct ident    ips_ident_s;            /* identity src */
+       struct ident    ips_ident_d;            /* identity dst */
+
+        /* these are included even if CONFIG_KLIPS_IPCOMP is off */
+       __u16           ips_comp_adapt_tries;   /* ipcomp self-adaption tries */
+       __u16           ips_comp_adapt_skip;    /* ipcomp self-adaption to-skip */
+       __u64           ips_comp_ratio_cbytes;  /* compressed bytes */
+       __u64           ips_comp_ratio_dbytes;  /* decompressed (or uncompressed) bytes */
+
+        /* these are included even if CONFIG_IPSEC_NAT_TRAVERSAL is off */
+       __u8            ips_natt_type;
+       __u8            ips_natt_reserved[3];
+       __u16           ips_natt_sport;
+       __u16           ips_natt_dport;
+
+       struct sockaddr *ips_natt_oa;
+       __u16           ips_natt_oa_size;
+       __u16           ips_natt_reserved2;
+
+#if 0
+       __u32           ips_sens_dpd;
+       __u8            ips_sens_sens_level;
+       __u8            ips_sens_sens_len;
+       __u64*          ips_sens_sens_bitmap;
+       __u8            ips_sens_integ_level;
+       __u8            ips_sens_integ_len;
+       __u64*          ips_sens_integ_bitmap;
+#endif
+       struct ipsec_alg_enc *ips_alg_enc;
+       struct ipsec_alg_auth *ips_alg_auth;
+       IPsecSAref_t    ips_ref_rel;
+};
+
+struct IPsecSArefSubTable
+{
+       struct ipsec_sa* entry[IPSEC_SA_REF_SUBTABLE_NUM_ENTRIES];
+};
+
+struct ipsec_sadb {
+       struct IPsecSArefSubTable* refTable[IPSEC_SA_REF_MAINTABLE_NUM_ENTRIES];
+       IPsecSAref_t refFreeList[IPSEC_SA_REF_FREELIST_NUM_ENTRIES];
+       int refFreeListHead;
+       int refFreeListTail;
+       IPsecSAref_t refFreeListCont;
+       IPsecSAref_t said_hash[SADB_HASHMOD];
+       spinlock_t sadb_lock;
+};
+
+extern struct ipsec_sadb ipsec_sadb;
+
+extern int ipsec_SAref_recycle(void);
+extern int ipsec_SArefSubTable_alloc(unsigned table);
+extern int ipsec_saref_freelist_init(void);
+extern int ipsec_sadb_init(void);
+extern struct ipsec_sa *ipsec_sa_alloc(int*error); /* pass in error var by pointer */
+extern IPsecSAref_t ipsec_SAref_alloc(int*erorr); /* pass in error var by pointer */
+extern int ipsec_sa_free(struct ipsec_sa* ips);
+extern int ipsec_sa_put(struct ipsec_sa *ips);
+extern int ipsec_sa_add(struct ipsec_sa *ips);
+extern int ipsec_sa_del(struct ipsec_sa *ips);
+extern int ipsec_sa_delchain(struct ipsec_sa *ips);
+extern int ipsec_sadb_cleanup(__u8 proto);
+extern int ipsec_sadb_free(void);
+extern int ipsec_sa_wipe(struct ipsec_sa *ips);
+#endif /* __KERNEL__ */
+
+enum ipsec_direction {
+       ipsec_incoming = 1,
+       ipsec_outgoing = 2
+};
+
+#define _IPSEC_SA_H_
+#endif /* _IPSEC_SA_H_ */
+
+/*
+ * $Log: ipsec_sa.h,v $
+ * Revision 1.23.2.1  2007-09-05 02:31:15  paul
+ * Fix an nfmark -> mark occurance. Patch by David McCullough
+ *
+ * Revision 1.23  2005/05/11 01:18:59  mcr
+ *     do not change structure based upon options, to avoid
+ *     too many #ifdef.
+ *
+ * Revision 1.22  2005/04/14 01:17:09  mcr
+ *     change sadb_state to an enum.
+ *
+ * Revision 1.21  2004/08/20 21:45:37  mcr
+ *     CONFIG_KLIPS_NAT_TRAVERSAL is not used in an attempt to
+ *     be 26sec compatible. But, some defines where changed.
+ *
+ * Revision 1.20  2004/07/10 19:08:41  mcr
+ *     CONFIG_IPSEC -> CONFIG_KLIPS.
+ *
+ * Revision 1.19  2004/04/05 19:55:06  mcr
+ * Moved from linux/include/freeswan/ipsec_sa.h,v
+ *
+ * Revision 1.18  2004/04/05 19:41:05  mcr
+ *     merged alg-branch code.
+ *
+ * Revision 1.17.2.1  2003/12/22 15:25:52  jjo
+ * . Merged algo-0.8.1-rc11-test1 into alg-branch
+ *
+ * Revision 1.17  2003/12/10 01:20:06  mcr
+ *     NAT-traversal patches to KLIPS.
+ *
+ * Revision 1.16  2003/10/31 02:27:05  mcr
+ *     pulled up port-selector patches and sa_id elimination.
+ *
+ * Revision 1.15.4.1  2003/10/29 01:10:19  mcr
+ *     elimited "struct sa_id"
+ *
+ * Revision 1.15  2003/05/11 00:53:09  mcr
+ *     IPsecSAref_t and macros were moved to freeswan.h.
+ *
+ * Revision 1.14  2003/02/12 19:31:55  rgb
+ * Fixed bug in "file seen" machinery.
+ * Updated copyright year.
+ *
+ * Revision 1.13  2003/01/30 02:31:52  rgb
+ *
+ * Re-wrote comments describing SAref system for accuracy.
+ * Rename SAref table macro names for clarity.
+ * Convert IPsecSAref_t from signed to unsigned to fix apparent SAref exhaustion bug.
+ * Transmit error code through to caller from callee for better diagnosis of problems.
+ * Enclose all macro arguments in parens to avoid any possible obscrure bugs.
+ *
+ * Revision 1.12  2002/10/07 18:31:19  rgb
+ * Change comment to reflect the flexible nature of the main and sub-table widths.
+ * Added a counter for the number of unused entries in each subtable.
+ * Further break up host field type macro to host field.
+ * Move field width sanity checks to ipsec_sa.c
+ * Define a mask for an entire saref.
+ *
+ * Revision 1.11  2002/09/20 15:40:33  rgb
+ * Re-write most of the SAref macros and types to eliminate any pointer references to Entrys.
+ * Fixed SAref/nfmark macros.
+ * Rework saref freeslist.
+ * Place all ipsec sadb globals into one struct.
+ * Restrict some bits to kernel context for use to klips utils.
+ *
+ * Revision 1.10  2002/09/20 05:00:34  rgb
+ * Update copyright date.
+ *
+ * Revision 1.9  2002/09/17 17:19:29  mcr
+ *     make it compile even if there is no netfilter - we lost
+ *     functionality, but it works, especially on 2.2.
+ *
+ * Revision 1.8  2002/07/28 22:59:53  mcr
+ *     clarified/expanded one comment.
+ *
+ * Revision 1.7  2002/07/26 08:48:31  rgb
+ * Added SA ref table code.
+ *
+ * Revision 1.6  2002/05/31 17:27:48  rgb
+ * Comment fix.
+ *
+ * Revision 1.5  2002/05/27 18:55:03  rgb
+ * Remove final vistiges of tdb references via IPSEC_KLIPS1_COMPAT.
+ *
+ * Revision 1.4  2002/05/23 07:13:36  rgb
+ * Convert "usecount" to "refcount" to remove ambiguity.
+ *
+ * Revision 1.3  2002/04/24 07:36:47  mcr
+ * Moved from ./klips/net/ipsec/ipsec_sa.h,v
+ *
+ * Revision 1.2  2001/11/26 09:16:15  rgb
+ * Merge MCR's ipsec_sa, eroute, proc and struct lifetime changes.
+ *
+ * Revision 1.1.2.1  2001/09/25 02:24:58  mcr
+ *     struct tdb -> struct ipsec_sa.
+ *     sa(tdb) manipulation functions renamed and moved to ipsec_sa.c
+ *     ipsec_xform.c removed. header file still contains useful things.
+ *
+ *
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ *
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/openswan/ipsec_sha1.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,79 @@
+/*
+ * RCSID $Id: ipsec_sha1.h,v 1.8 2004-04-05 19:55:07 mcr Exp $
+ */
+
+/*
+ * Here is the original comment from the distribution:
+
+SHA-1 in C
+By Steve Reid <steve@edmweb.com>
+100% Public Domain
+
+ * Adapted for use by the IPSEC code by John Ioannidis
+ */
+
+
+#ifndef _IPSEC_SHA1_H_
+#define _IPSEC_SHA1_H_
+
+typedef struct
+{
+       __u32   state[5];
+       __u32   count[2];
+       __u8    buffer[64];
+} SHA1_CTX;
+
+void SHA1Transform(__u32 state[5], __u8 buffer[64]);
+void SHA1Init(void *context);
+void SHA1Update(void *context, unsigned char *data, __u32 len);
+void SHA1Final(unsigned char digest[20], void *context);
+
+ 
+#endif /* _IPSEC_SHA1_H_ */
+
+/*
+ * $Log: ipsec_sha1.h,v $
+ * Revision 1.8  2004-04-05 19:55:07  mcr
+ * Moved from linux/include/freeswan/ipsec_sha1.h,v
+ *
+ * Revision 1.7  2002/09/10 01:45:09  mcr
+ *     changed type of MD5_CTX and SHA1_CTX to void * so that
+ *     the function prototypes would match, and could be placed
+ *     into a pointer to a function.
+ *
+ * Revision 1.6  2002/04/24 07:36:47  mcr
+ * Moved from ./klips/net/ipsec/ipsec_sha1.h,v
+ *
+ * Revision 1.5  1999/12/13 13:59:13  rgb
+ * Quick fix to argument size to Update bugs.
+ *
+ * Revision 1.4  1999/12/07 18:16:23  rgb
+ * Fixed comments at end of #endif lines.
+ *
+ * Revision 1.3  1999/04/06 04:54:27  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.2  1998/11/30 13:22:54  rgb
+ * Rationalised all the klips kernel file headers.  They are much shorter
+ * now and won't conflict under RH5.2.
+ *
+ * Revision 1.1  1998/06/18 21:27:50  henry
+ * move sources from klips/src to klips/net/ipsec, to keep stupid
+ * kernel-build scripts happier in the presence of symlinks
+ *
+ * Revision 1.2  1998/04/23 20:54:05  rgb
+ * Fixed md5 and sha1 include file nesting issues, to be cleaned up when
+ * verified.
+ *
+ * Revision 1.1  1998/04/09 03:04:21  henry
+ * sources moved up from linux/net/ipsec
+ * these two include files modified not to include others except in kernel
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:04  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.4  1997/01/15 01:28:15  ji
+ * New transform
+ *
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/openswan/ipsec_stats.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,76 @@
+/*
+ * @(#) definition of ipsec_stats structure
+ *
+ * Copyright (C) 2001  Richard Guy Briggs  <rgb@freeswan.org>
+ *                 and Michael Richardson  <mcr@freeswan.org>
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id: ipsec_stats.h,v 1.7 2005-04-14 01:17:45 mcr Exp $
+ *
+ */
+
+/* 
+ * This file describes the errors/statistics that FreeSWAN collects.
+ */
+
+#ifndef _IPSEC_STATS_H_
+
+struct ipsec_stats {
+       __u32           ips_alg_errs;          /* number of algorithm errors */
+       __u32           ips_auth_errs;         /* # of authentication errors */
+       __u32           ips_encsize_errs;      /* # of encryption size errors*/
+       __u32           ips_encpad_errs;       /* # of encryption pad  errors*/
+       __u32           ips_replaywin_errs;    /* # of pkt sequence errors */
+};
+
+#define _IPSEC_STATS_H_
+#endif /* _IPSEC_STATS_H_ */
+
+/*
+ * $Log: ipsec_stats.h,v $
+ * Revision 1.7  2005-04-14 01:17:45  mcr
+ *     add prototypes for snprintf.
+ *
+ * Revision 1.6  2004/04/05 19:55:07  mcr
+ * Moved from linux/include/freeswan/ipsec_stats.h,v
+ *
+ * Revision 1.5  2004/04/05 19:41:05  mcr
+ *     merged alg-branch code.
+ *
+ * Revision 1.4  2004/03/28 20:27:19  paul
+ * Included tested and confirmed fixes mcr made and dhr verified for
+ * snprint statements. Changed one other snprintf to use ipsec_snprintf
+ * so it wouldnt break compatibility with 2.0/2.2 kernels. Verified with
+ * dhr. (thanks dhr!)
+ *
+ * Revision 1.4  2004/03/24 01:58:31  mcr
+ *     sprintf->snprintf for formatting into proc buffer.
+ *
+ * Revision 1.3.34.1  2004/04/05 04:30:46  mcr
+ *     patches for alg-branch to compile/work with 2.x openswan
+ *
+ * Revision 1.3  2002/04/24 07:36:47  mcr
+ * Moved from ./klips/net/ipsec/ipsec_stats.h,v
+ *
+ * Revision 1.2  2001/11/26 09:16:16  rgb
+ * Merge MCR's ipsec_sa, eroute, proc and struct lifetime changes.
+ *
+ * Revision 1.1.2.1  2001/09/25 02:27:00  mcr
+ *     statistics moved to seperate structure.
+ *
+ *
+ *
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ *
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/openswan/ipsec_tunnel.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,280 @@
+/*
+ * IPSEC tunneling code
+ * Copyright (C) 1996, 1997  John Ioannidis.
+ * Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id: ipsec_tunnel.h,v 1.33 2005-06-04 16:06:05 mcr Exp $
+ */
+
+
+#ifdef NET_21
+# define DEV_QUEUE_XMIT(skb, device, pri) {\
+       skb->dev = device; \
+       neigh_compat_output(skb); \
+       /* skb->dst->output(skb); */ \
+ }
+# define ICMP_SEND(skb_in, type, code, info, dev) \
+       icmp_send(skb_in, type, code, htonl(info))
+# define IP_SEND(skb, dev) \
+       ip_send(skb);
+#else /* NET_21 */
+# define DEV_QUEUE_XMIT(skb, device, pri) {\
+       dev_queue_xmit(skb, device, pri); \
+ }
+# define ICMP_SEND(skb_in, type, code, info, dev) \
+       icmp_send(skb_in, type, code, info, dev)
+# define IP_SEND(skb, dev) \
+       if(ntohs(iph->tot_len) > physmtu) { \
+               ip_fragment(NULL, skb, dev, 0); \
+               ipsec_kfree_skb(skb); \
+       } else { \
+               dev_queue_xmit(skb, dev, SOPRI_NORMAL); \
+       }
+#endif /* NET_21 */
+
+
+/*
+ * Heavily based on drivers/net/new_tunnel.c.  Lots
+ * of ideas also taken from the 2.1.x version of drivers/net/shaper.c
+ */
+
+struct ipsectunnelconf
+{
+       __u32   cf_cmd;
+       union
+       {
+               char    cfu_name[12];
+       } cf_u;
+#define cf_name cf_u.cfu_name
+};
+
+#define IPSEC_SET_DEV  (SIOCDEVPRIVATE)
+#define IPSEC_DEL_DEV  (SIOCDEVPRIVATE + 1)
+#define IPSEC_CLR_DEV  (SIOCDEVPRIVATE + 2)
+
+#ifdef __KERNEL__
+#include <linux/version.h>
+#ifndef KERNEL_VERSION
+#  define KERNEL_VERSION(x,y,z) (((x)<<16)+((y)<<8)+(z))
+#endif
+struct ipsecpriv
+{
+       struct sk_buff_head sendq;
+       struct net_device *dev;
+       struct wait_queue *wait_queue;
+       char locked;
+       int  (*hard_start_xmit) (struct sk_buff *skb,
+               struct net_device *dev);
+       int  (*hard_header) (struct sk_buff *skb,
+               struct net_device *dev,
+               unsigned short type,
+               void *daddr,
+               void *saddr,
+               unsigned len);
+#ifdef NET_21
+       int  (*rebuild_header)(struct sk_buff *skb);
+#else /* NET_21 */
+       int  (*rebuild_header)(void *buff, struct net_device *dev,
+                       unsigned long raddr, struct sk_buff *skb);
+#endif /* NET_21 */
+       int  (*set_mac_address)(struct net_device *dev, void *addr);
+#ifndef NET_21
+       void (*header_cache_bind)(struct hh_cache **hhp, struct net_device *dev,
+                                unsigned short htype, __u32 daddr);
+#endif /* !NET_21 */
+       void (*header_cache_update)(struct hh_cache *hh, struct net_device *dev, unsigned char *  haddr);
+       struct net_device_stats *(*get_stats)(struct net_device *dev);
+       struct net_device_stats mystats;
+       int mtu;        /* What is the desired MTU? */
+};
+
+extern char ipsec_tunnel_c_version[];
+
+extern struct net_device *ipsecdevices[IPSEC_NUM_IF];
+
+int ipsec_tunnel_init_devices(void);
+
+/* void */ int ipsec_tunnel_cleanup_devices(void);
+
+extern /* void */ int ipsec_init(void);
+
+extern int ipsec_tunnel_start_xmit(struct sk_buff *skb, struct net_device *dev);
+extern struct net_device *ipsec_get_device(int inst);
+
+#ifdef CONFIG_KLIPS_DEBUG
+extern int debug_tunnel;
+extern int sysctl_ipsec_debug_verbose;
+#endif /* CONFIG_KLIPS_DEBUG */
+#endif /* __KERNEL__ */
+
+#ifdef CONFIG_KLIPS_DEBUG
+#define DB_TN_INIT     0x0001
+#define DB_TN_PROCFS   0x0002
+#define DB_TN_XMIT     0x0010
+#define DB_TN_OHDR     0x0020
+#define DB_TN_CROUT    0x0040
+#define DB_TN_OXFS     0x0080
+#define DB_TN_REVEC    0x0100
+#define DB_TN_ENCAP     0x0200
+#endif /* CONFIG_KLIPS_DEBUG */
+
+/*
+ * $Log: ipsec_tunnel.h,v $
+ * Revision 1.33  2005-06-04 16:06:05  mcr
+ *     better patch for nat-t rcv-device code.
+ *
+ * Revision 1.32  2005/05/21 03:18:35  mcr
+ *     added additional debug flag tunnelling.
+ *
+ * Revision 1.31  2004/08/03 18:18:02  mcr
+ *     in 2.6, use "net_device" instead of #define device->net_device.
+ *     this probably breaks 2.0 compiles.
+ *
+ * Revision 1.30  2004/07/10 19:08:41  mcr
+ *     CONFIG_IPSEC -> CONFIG_KLIPS.
+ *
+ * Revision 1.29  2004/04/05 19:55:07  mcr
+ * Moved from linux/include/freeswan/ipsec_tunnel.h,v
+ *
+ * Revision 1.28  2003/06/24 20:22:32  mcr
+ *     added new global: ipsecdevices[] so that we can keep track of
+ *     the ipsecX devices. They will be referenced with dev_hold(),
+ *     so 2.2 may need this as well.
+ *
+ * Revision 1.27  2003/04/03 17:38:09  rgb
+ * Centralised ipsec_kfree_skb and ipsec_dev_{get,put}.
+ *
+ * Revision 1.26  2003/02/12 19:32:20  rgb
+ * Updated copyright year.
+ *
+ * Revision 1.25  2002/05/27 18:56:07  rgb
+ * Convert to dynamic ipsec device allocation.
+ *
+ * Revision 1.24  2002/04/24 07:36:48  mcr
+ * Moved from ./klips/net/ipsec/ipsec_tunnel.h,v
+ *
+ * Revision 1.23  2001/11/06 19:50:44  rgb
+ * Moved IP_SEND, ICMP_SEND, DEV_QUEUE_XMIT macros to ipsec_tunnel.h for
+ * use also by pfkey_v2_parser.c
+ *
+ * Revision 1.22  2001/09/15 16:24:05  rgb
+ * Re-inject first and last HOLD packet when an eroute REPLACE is done.
+ *
+ * Revision 1.21  2001/06/14 19:35:10  rgb
+ * Update copyright date.
+ *
+ * Revision 1.20  2000/09/15 11:37:02  rgb
+ * Merge in heavily modified Svenning Soerensen's <svenning@post5.tele.dk>
+ * IPCOMP zlib deflate code.
+ *
+ * Revision 1.19  2000/09/08 19:12:56  rgb
+ * Change references from DEBUG_IPSEC to CONFIG_IPSEC_DEBUG.
+ *
+ * Revision 1.18  2000/07/28 13:50:54  rgb
+ * Changed enet_statistics to net_device_stats and added back compatibility
+ * for pre-2.1.19.
+ *
+ * Revision 1.17  1999/11/19 01:12:15  rgb
+ * Purge unneeded proc_info prototypes, now that static linking uses
+ * dynamic proc_info registration.
+ *
+ * Revision 1.16  1999/11/18 18:51:00  rgb
+ * Changed all device registrations for static linking to
+ * dynamic to reduce the number and size of patches.
+ *
+ * Revision 1.15  1999/11/18 04:14:21  rgb
+ * Replaced all kernel version macros to shorter, readable form.
+ * Added CONFIG_PROC_FS compiler directives in case it is shut off.
+ * Added Marc Boucher's 2.3.25 proc patches.
+ *
+ * Revision 1.14  1999/05/25 02:50:10  rgb
+ * Fix kernel version macros for 2.0.x static linking.
+ *
+ * Revision 1.13  1999/05/25 02:41:06  rgb
+ * Add ipsec_klipsdebug support for static linking.
+ *
+ * Revision 1.12  1999/05/05 22:02:32  rgb
+ * Add a quick and dirty port to 2.2 kernels by Marc Boucher <marc@mbsi.ca>.
+ *
+ * Revision 1.11  1999/04/29 15:19:50  rgb
+ * Add return values to init and cleanup functions.
+ *
+ * Revision 1.10  1999/04/16 16:02:39  rgb
+ * Bump up macro to 4 ipsec I/Fs.
+ *
+ * Revision 1.9  1999/04/15 15:37:25  rgb
+ * Forward check changes from POST1_00 branch.
+ *
+ * Revision 1.5.2.1  1999/04/02 04:26:14  rgb
+ * Backcheck from HEAD, pre1.0.
+ *
+ * Revision 1.8  1999/04/11 00:29:01  henry
+ * GPL boilerplate
+ *
+ * Revision 1.7  1999/04/06 04:54:28  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.6  1999/03/31 05:44:48  rgb
+ * Keep PMTU reduction private.
+ *
+ * Revision 1.5  1999/02/10 22:31:20  rgb
+ * Change rebuild_header member to reflect generality of link layer.
+ *
+ * Revision 1.4  1998/12/01 13:22:04  rgb
+ * Added support for debug printing of version info.
+ *
+ * Revision 1.3  1998/07/29 20:42:46  rgb
+ * Add a macro for clearing all tunnel devices.
+ * Rearrange structures and declarations for sharing with userspace.
+ *
+ * Revision 1.2  1998/06/25 20:01:45  rgb
+ * Make prototypes available for ipsec_init and ipsec proc_dir_entries
+ * for static linking.
+ *
+ * Revision 1.1  1998/06/18 21:27:50  henry
+ * move sources from klips/src to klips/net/ipsec, to keep stupid
+ * kernel-build scripts happier in the presence of symlinks
+ *
+ * Revision 1.3  1998/05/18 21:51:50  rgb
+ * Added macros for num of I/F's and a procfs debug switch.
+ *
+ * Revision 1.2  1998/04/21 21:29:09  rgb
+ * Rearrange debug switches to change on the fly debug output from user
+ * space.  Only kernel changes checked in at this time.  radij.c was also
+ * changed to temporarily remove buggy debugging code in rj_delete causing
+ * an OOPS and hence, netlink device open errors.
+ *
+ * Revision 1.1  1998/04/09 03:06:13  henry
+ * sources moved up from linux/net/ipsec
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:05  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.5  1997/06/03 04:24:48  ji
+ * Added transport mode.
+ * Changed the way routing is done.
+ * Lots of bug fixes.
+ *
+ * Revision 0.4  1997/01/15 01:28:15  ji
+ * No changes.
+ *
+ * Revision 0.3  1996/11/20 14:39:04  ji
+ * Minor cleanups.
+ * Rationalized debugging code.
+ *
+ * Revision 0.2  1996/11/02 00:18:33  ji
+ * First limited release.
+ *
+ *
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/openswan/ipsec_xform.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,257 @@
+/*
+ * Definitions relevant to IPSEC transformations
+ * Copyright (C) 1996, 1997  John Ioannidis.
+ * Copyright (C) 1998, 1999, 2000, 2001  Richard Guy Briggs.
+ * COpyright (C) 2003  Michael Richardson <mcr@sandelman.ottawa.on.ca>
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id: ipsec_xform.h,v 1.41 2004-07-10 19:08:41 mcr Exp $
+ */
+
+#ifndef _IPSEC_XFORM_H_
+
+#include <openswan.h>
+
+#define XF_NONE                        0       /* No transform set */
+#define XF_IP4                 1       /* IPv4 inside IPv4 */
+#define XF_AHMD5               2       /* AH MD5 */
+#define XF_AHSHA               3       /* AH SHA */
+#define XF_ESP3DES             5       /* ESP DES3-CBC */
+#define XF_AHHMACMD5           6       /* AH-HMAC-MD5 with opt replay prot */
+#define XF_AHHMACSHA1          7       /* AH-HMAC-SHA1 with opt replay prot */
+#define XF_ESP3DESMD5          9       /* triple DES, HMAC-MD-5, 128-bits of authentication */
+#define        XF_ESP3DESMD596         10      /* triple DES, HMAC-MD-5, 96-bits of authentication */
+#define        XF_ESPNULLMD596         12      /* NULL, HMAC-MD-5 with 96-bits of authentication */
+#define        XF_ESPNULLSHA196        13      /* NULL, HMAC-SHA-1 with 96-bits of authentication */
+#define        XF_ESP3DESSHA196        14      /* triple DES, HMAC-SHA-1, 96-bits of authentication */
+#define XF_IP6                 15      /* IPv6 inside IPv6 */
+#define XF_COMPDEFLATE         16      /* IPCOMP deflate */
+
+#define XF_CLR                 126     /* Clear SA table */
+#define XF_DEL                 127     /* Delete SA */
+
+/* IPsec AH transform values
+ * RFC 2407
+ * draft-ietf-ipsec-doi-tc-mib-02.txt
+ */
+
+#define AH_NONE                        0
+#define AH_MD5                 2
+#define AH_SHA                 3
+/* draft-ietf-ipsec-ciph-aes-cbc-03.txt */
+#define AH_SHA2_256            5
+#define AH_SHA2_384            6
+#define AH_SHA2_512            7
+#define AH_RIPEMD              8
+#define AH_MAX                 15
+
+/* IPsec ESP transform values */
+
+#define ESP_NONE               0
+#define ESP_DES                        2
+#define ESP_3DES               3
+#define ESP_RC5                        4
+#define ESP_IDEA               5
+#define ESP_CAST               6
+#define ESP_BLOWFISH           7
+#define ESP_3IDEA              8
+#define ESP_RC4                        10
+#define ESP_NULL               11
+#define ESP_AES                        12
+
+/* as draft-ietf-ipsec-ciph-aes-cbc-02.txt */
+#define ESP_MARS               249
+#define        ESP_RC6                 250
+#define ESP_SERPENT            252
+#define ESP_TWOFISH            253
+                        
+/* IPCOMP transform values */
+
+#define IPCOMP_NONE            0
+#define IPCOMP_OUI             1
+#define IPCOMP_DEFLAT          2
+#define IPCOMP_LZS             3
+#define IPCOMP_V42BIS          4
+
+#define XFT_AUTH               0x0001
+#define XFT_CONF               0x0100
+
+/* available if CONFIG_KLIPS_DEBUG is defined */
+#define DB_XF_INIT             0x0001
+
+#define PROTO2TXT(x) \
+       (x) == IPPROTO_AH ? "AH" : \
+       (x) == IPPROTO_ESP ? "ESP" : \
+       (x) == IPPROTO_IPIP ? "IPIP" : \
+       (x) == IPPROTO_COMP ? "COMP" : \
+       "UNKNOWN_proto"
+static inline const char *enc_name_id (unsigned id) {
+       static char buf[16];
+       snprintf(buf, sizeof(buf), "_ID%d", id);
+       return buf;
+}
+static inline const char *auth_name_id (unsigned id) {
+       static char buf[16];
+       snprintf(buf, sizeof(buf), "_ID%d", id);
+       return buf;
+}
+#define IPS_XFORM_NAME(x) \
+       PROTO2TXT((x)->ips_said.proto), \
+       (x)->ips_said.proto == IPPROTO_COMP ? \
+               ((x)->ips_encalg == SADB_X_CALG_DEFLATE ? \
+                "_DEFLATE" : "_UNKNOWN_comp") : \
+       (x)->ips_encalg == ESP_NONE ? "" : \
+       (x)->ips_encalg == ESP_3DES ? "_3DES" : \
+       (x)->ips_encalg == ESP_AES ? "_AES" : \
+       (x)->ips_encalg == ESP_SERPENT ? "_SERPENT" : \
+       (x)->ips_encalg == ESP_TWOFISH ? "_TWOFISH" : \
+       enc_name_id(x->ips_encalg)/* "_UNKNOWN_encr" */, \
+       (x)->ips_authalg == AH_NONE ? "" : \
+       (x)->ips_authalg == AH_MD5 ? "_HMAC_MD5" : \
+       (x)->ips_authalg == AH_SHA ? "_HMAC_SHA1" : \
+       (x)->ips_authalg == AH_SHA2_256 ? "_HMAC_SHA2_256" : \
+       (x)->ips_authalg == AH_SHA2_384 ? "_HMAC_SHA2_384" : \
+       (x)->ips_authalg == AH_SHA2_512 ? "_HMAC_SHA2_512" : \
+       auth_name_id(x->ips_authalg) /* "_UNKNOWN_auth" */ \
+
+#ifdef __KERNEL__
+struct ipsec_rcv_state;
+struct ipsec_xmit_state;
+
+struct xform_functions {
+       enum ipsec_rcv_value (*rcv_checks)(struct ipsec_rcv_state *irs,
+                                      struct sk_buff *skb);
+        enum ipsec_rcv_value (*rcv_decrypt)(struct ipsec_rcv_state *irs);
+
+       enum ipsec_rcv_value (*rcv_setup_auth)(struct ipsec_rcv_state *irs,
+                                          struct sk_buff *skb,
+                                          __u32          *replay,
+                                          unsigned char **authenticator);
+       enum ipsec_rcv_value (*rcv_calc_auth)(struct ipsec_rcv_state *irs,
+                                       struct sk_buff *skb);
+
+       enum ipsec_xmit_value (*xmit_setup)(struct ipsec_xmit_state *ixs);
+        enum ipsec_xmit_value (*xmit_encrypt)(struct ipsec_xmit_state *ixs);
+
+       enum ipsec_xmit_value (*xmit_setup_auth)(struct ipsec_xmit_state *ixs,
+                                          struct sk_buff *skb,
+                                          __u32          *replay,
+                                          unsigned char **authenticator);
+       enum ipsec_xmit_value (*xmit_calc_auth)(struct ipsec_xmit_state *ixs,
+                                       struct sk_buff *skb);
+        int  xmit_headroom;
+       int  xmit_needtailroom;
+};
+
+#endif /* __KERNEL__ */
+
+#ifdef CONFIG_KLIPS_DEBUG
+extern void ipsec_dmp(char *s, caddr_t bb, int len);
+#else /* CONFIG_KLIPS_DEBUG */
+#define ipsec_dmp(_x, _y, _z) 
+#endif /* CONFIG_KLIPS_DEBUG */
+
+
+#define _IPSEC_XFORM_H_
+#endif /* _IPSEC_XFORM_H_ */
+
+/*
+ * $Log: ipsec_xform.h,v $
+ * Revision 1.41  2004-07-10 19:08:41  mcr
+ *     CONFIG_IPSEC -> CONFIG_KLIPS.
+ *
+ * Revision 1.40  2004/04/06 02:49:08  mcr
+ *     pullup of algo code from alg-branch.
+ *
+ * Revision 1.39  2004/04/05 19:55:07  mcr
+ * Moved from linux/include/freeswan/ipsec_xform.h,v
+ *
+ * Revision 1.38  2004/04/05 19:41:05  mcr
+ *     merged alg-branch code.
+ *
+ * Revision 1.37  2003/12/13 19:10:16  mcr
+ *     refactored rcv and xmit code - same as FS 2.05.
+ *
+ * Revision 1.36.34.1  2003/12/22 15:25:52  jjo
+ *      Merged algo-0.8.1-rc11-test1 into alg-branch
+ *
+ * Revision 1.36  2002/04/24 07:36:48  mcr
+ * Moved from ./klips/net/ipsec/ipsec_xform.h,v
+ *
+ * Revision 1.35  2001/11/26 09:23:51  rgb
+ * Merge MCR's ipsec_sa, eroute, proc and struct lifetime changes.
+ *
+ * Revision 1.33.2.1  2001/09/25 02:24:58  mcr
+ *     struct tdb -> struct ipsec_sa.
+ *     sa(tdb) manipulation functions renamed and moved to ipsec_sa.c
+ *     ipsec_xform.c removed. header file still contains useful things.
+ *
+ * Revision 1.34  2001/11/06 19:47:17  rgb
+ * Changed lifetime_packets to uint32 from uint64.
+ *
+ * Revision 1.33  2001/09/08 21:13:34  rgb
+ * Added pfkey ident extension support for ISAKMPd. (NetCelo)
+ *
+ * Revision 1.32  2001/07/06 07:40:01  rgb
+ * Reformatted for readability.
+ * Added inbound policy checking fields for use with IPIP SAs.
+ *
+ * Revision 1.31  2001/06/14 19:35:11  rgb
+ * Update copyright date.
+ *
+ * Revision 1.30  2001/05/30 08:14:03  rgb
+ * Removed vestiges of esp-null transforms.
+ *
+ * Revision 1.29  2001/01/30 23:42:47  rgb
+ * Allow pfkey msgs from pid other than user context required for ACQUIRE
+ * and subsequent ADD or UDATE.
+ *
+ * Revision 1.28  2000/11/06 04:30:40  rgb
+ * Add Svenning's adaptive content compression.
+ *
+ * Revision 1.27  2000/09/19 00:38:25  rgb
+ * Fixed algorithm name bugs introduced for ipcomp.
+ *
+ * Revision 1.26  2000/09/17 21:36:48  rgb
+ * Added proto2txt macro.
+ *
+ * Revision 1.25  2000/09/17 18:56:47  rgb
+ * Added IPCOMP support.
+ *
+ * Revision 1.24  2000/09/12 19:34:12  rgb
+ * Defined XF_IP6 from Gerhard for ipv6 tunnel support.
+ *
+ * Revision 1.23  2000/09/12 03:23:14  rgb
+ * Cleaned out now unused tdb_xform and tdb_xdata members of struct tdb.
+ *
+ * Revision 1.22  2000/09/08 19:12:56  rgb
+ * Change references from DEBUG_IPSEC to CONFIG_IPSEC_DEBUG.
+ *
+ * Revision 1.21  2000/09/01 18:32:43  rgb
+ * Added (disabled) sensitivity members to tdb struct.
+ *
+ * Revision 1.20  2000/08/30 05:31:01  rgb
+ * Removed all the rest of the references to tdb_spi, tdb_proto, tdb_dst.
+ * Kill remainder of tdb_xform, tdb_xdata, xformsw.
+ *
+ * Revision 1.19  2000/08/01 14:51:52  rgb
+ * Removed _all_ remaining traces of DES.
+ *
+ * Revision 1.18  2000/01/21 06:17:45  rgb
+ * Tidied up spacing.
+ *
+ *
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ *
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/openswan/ipsec_xmit.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,198 @@
+/*
+ * IPSEC tunneling code
+ * Copyright (C) 1996, 1997  John Ioannidis.
+ * Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id: ipsec_xmit.h,v 1.14 2005-05-11 01:00:26 mcr Exp $
+ */
+
+#include "openswan/ipsec_sa.h"
+
+enum ipsec_xmit_value
+{
+       IPSEC_XMIT_STOLEN=2,
+       IPSEC_XMIT_PASS=1,
+       IPSEC_XMIT_OK=0,
+       IPSEC_XMIT_ERRMEMALLOC=-1,
+       IPSEC_XMIT_ESP_BADALG=-2,
+       IPSEC_XMIT_BADPROTO=-3,
+       IPSEC_XMIT_ESP_PUSHPULLERR=-4,
+       IPSEC_XMIT_BADLEN=-5,
+       IPSEC_XMIT_AH_BADALG=-6,
+       IPSEC_XMIT_SAIDNOTFOUND=-7,
+       IPSEC_XMIT_SAIDNOTLIVE=-8,
+       IPSEC_XMIT_REPLAYROLLED=-9,
+       IPSEC_XMIT_LIFETIMEFAILED=-10,
+       IPSEC_XMIT_CANNOTFRAG=-11,
+       IPSEC_XMIT_MSSERR=-12,
+       IPSEC_XMIT_ERRSKBALLOC=-13,
+       IPSEC_XMIT_ENCAPFAIL=-14,
+       IPSEC_XMIT_NODEV=-15,
+       IPSEC_XMIT_NOPRIVDEV=-16,
+       IPSEC_XMIT_NOPHYSDEV=-17,
+       IPSEC_XMIT_NOSKB=-18,
+       IPSEC_XMIT_NOIPV6=-19,
+       IPSEC_XMIT_NOIPOPTIONS=-20,
+       IPSEC_XMIT_TTLEXPIRED=-21,
+       IPSEC_XMIT_BADHHLEN=-22,
+       IPSEC_XMIT_PUSHPULLERR=-23,
+       IPSEC_XMIT_ROUTEERR=-24,
+       IPSEC_XMIT_RECURSDETECT=-25,
+       IPSEC_XMIT_IPSENDFAILURE=-26,
+       IPSEC_XMIT_ESPUDP=-27,
+       IPSEC_XMIT_ESPUDP_BADTYPE=-28,
+};
+
+struct ipsec_xmit_state
+{
+       struct sk_buff *skb;            /* working skb pointer */
+       struct net_device *dev;         /* working dev pointer */
+       struct ipsecpriv *prv;          /* Our device' private space */
+       struct sk_buff *oskb;           /* Original skb pointer */
+       struct net_device_stats *stats; /* This device's statistics */
+       struct iphdr  *iph;             /* Our new IP header */
+       __u32   newdst;                 /* The other SG's IP address */
+       __u32   orgdst;                 /* Original IP destination address */
+       __u32   orgedst;                /* 1st SG's IP address */
+       __u32   newsrc;                 /* The new source SG's IP address */
+       __u32   orgsrc;                 /* Original IP source address */
+       __u32   innersrc;               /* Innermost IP source address */
+       int     iphlen;                 /* IP header length */
+       int     pyldsz;                 /* upper protocol payload size */
+       int     headroom;
+       int     tailroom;
+        int     authlen;
+       int     max_headroom;           /* The extra header space needed */
+       int     max_tailroom;           /* The extra stuffing needed */
+       int     ll_headroom;            /* The extra link layer hard_header space needed */
+       int     tot_headroom;           /* The total header space needed */
+       int     tot_tailroom;           /* The totalstuffing needed */
+       __u8    *saved_header;          /* saved copy of the hard header */
+       unsigned short   sport, dport;
+
+       struct sockaddr_encap matcher;  /* eroute search key */
+       struct eroute *eroute;
+       struct ipsec_sa *ipsp, *ipsq;   /* ipsec_sa pointers */
+       char sa_txt[SATOT_BUF];
+       size_t sa_len;
+       int hard_header_stripped;       /* has the hard header been removed yet? */
+       int hard_header_len;
+       struct net_device *physdev;
+/*     struct device *virtdev; */
+       short physmtu;
+       short cur_mtu;          /* copy of prv->mtu, cause prv may == NULL */
+       short mtudiff;
+#ifdef NET_21
+       struct rtable *route;
+#endif /* NET_21 */
+       ip_said outgoing_said;
+#ifdef NET_21
+       int pass;
+#endif /* NET_21 */
+       int error;
+       uint32_t eroute_pid;
+       struct ipsec_sa ips;
+#ifdef CONFIG_IPSEC_NAT_TRAVERSAL
+       uint8_t natt_type;
+       uint8_t natt_head;
+       uint16_t natt_sport;
+       uint16_t natt_dport;
+#endif
+};
+
+enum ipsec_xmit_value
+ipsec_xmit_sanity_check_dev(struct ipsec_xmit_state *ixs);
+
+enum ipsec_xmit_value
+ipsec_xmit_sanity_check_skb(struct ipsec_xmit_state *ixs);
+
+enum ipsec_xmit_value
+ipsec_xmit_encap_bundle(struct ipsec_xmit_state *ixs);
+
+extern void ipsec_extract_ports(struct iphdr * iph, struct sockaddr_encap * er);
+
+
+extern int ipsec_xmit_trap_count;
+extern int ipsec_xmit_trap_sendcount;
+
+#ifdef CONFIG_KLIPS_DEBUG
+extern int debug_tunnel;
+
+#define debug_xmit debug_tunnel
+
+#define ipsec_xmit_dmp(_x,_y, _z) if (debug_xmit && sysctl_ipsec_debug_verbose) ipsec_dmp_block(_x,_y,_z)
+#else
+#define ipsec_xmit_dmp(_x,_y, _z) do {} while(0)
+
+#endif /* CONFIG_KLIPS_DEBUG */
+
+extern int sysctl_ipsec_debug_verbose;
+extern int sysctl_ipsec_icmp;
+extern int sysctl_ipsec_tos;
+
+
+/*
+ * $Log: ipsec_xmit.h,v $
+ * Revision 1.14  2005-05-11 01:00:26  mcr
+ *     do not call debug routines if !defined KLIPS_DEBUG.
+ *
+ * Revision 1.13  2005/04/29 05:01:38  mcr
+ *     use ipsec_dmp_block.
+ *     added cur_mtu to ixs instead of using ixs->dev.
+ *
+ * Revision 1.12  2004/08/20 21:45:37  mcr
+ *     CONFIG_KLIPS_NAT_TRAVERSAL is not used in an attempt to
+ *     be 26sec compatible. But, some defines where changed.
+ *
+ * Revision 1.11  2004/08/03 18:18:21  mcr
+ *     in 2.6, use "net_device" instead of #define device->net_device.
+ *     this probably breaks 2.0 compiles.
+ *
+ * Revision 1.10  2004/07/10 19:08:41  mcr
+ *     CONFIG_IPSEC -> CONFIG_KLIPS.
+ *
+ * Revision 1.9  2004/04/06 02:49:08  mcr
+ *     pullup of algo code from alg-branch.
+ *
+ * Revision 1.8  2004/04/05 19:55:07  mcr
+ * Moved from linux/include/freeswan/ipsec_xmit.h,v
+ *
+ * Revision 1.7  2004/02/03 03:11:40  mcr
+ *     new xmit type if the UDP encapsulation is wrong.
+ *
+ * Revision 1.6  2003/12/13 19:10:16  mcr
+ *     refactored rcv and xmit code - same as FS 2.05.
+ *
+ * Revision 1.5  2003/12/10 01:20:06  mcr
+ *     NAT-traversal patches to KLIPS.
+ *
+ * Revision 1.4  2003/12/06 16:37:04  mcr
+ *     1.4.7a X.509 patch applied.
+ *
+ * Revision 1.3  2003/10/31 02:27:05  mcr
+ *     pulled up port-selector patches and sa_id elimination.
+ *
+ * Revision 1.2.4.2  2003/10/29 01:10:19  mcr
+ *     elimited "struct sa_id"
+ *
+ * Revision 1.2.4.1  2003/09/21 13:59:38  mcr
+ *     pre-liminary X.509 patch - does not yet pass tests.
+ *
+ * Revision 1.2  2003/06/20 01:42:13  mcr
+ *     added counters to measure how many ACQUIREs we send to pluto,
+ *     and how many are successfully sent.
+ *
+ * Revision 1.1  2003/02/12 19:31:03  rgb
+ * Refactored from ipsec_tunnel.c
+ *
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/openswan/passert.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,75 @@
+/*
+ * sanitize a string into a printable format.
+ *
+ * Copyright (C) 1998-2002  D. Hugh Redelmeier.
+ * Copyright (C) 2003  Michael Richardson <mcr@freeswan.org>
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id: passert.h,v 1.7.8.1 2007-09-05 02:32:24 paul Exp $
+ */
+
+#include "openswan.h"
+
+#ifndef _OPENSWAN_PASSERT_H
+#define _OPENSWAN_PASSERT_H
+/* our versions of assert: log result */
+
+#ifdef DEBUG
+
+typedef void (*openswan_passert_fail_t)(const char *pred_str,
+                                       const char *file_str,
+                                       unsigned long line_no) NEVER_RETURNS;
+
+extern openswan_passert_fail_t openswan_passert_fail;
+
+extern void pexpect_log(const char *pred_str
+                       , const char *file_str, unsigned long line_no);
+
+# define impossible() do { \
+    if(openswan_passert_fail) {                                        \
+      (*openswan_passert_fail)("impossible", __FILE__, __LINE__); \
+    }} while(0)
+
+extern void switch_fail(int n
+    , const char *file_str, unsigned long line_no) NEVER_RETURNS;
+
+# define bad_case(n) switch_fail((int) n, __FILE__, __LINE__)
+
+# define passert(pred) do { \
+       if (!(pred)) \
+         if(openswan_passert_fail) { \
+           (*openswan_passert_fail)(#pred, __FILE__, __LINE__);        \
+         } \
+  } while(0)
+
+# define pexpect(pred) do { \
+       if (!(pred)) \
+           pexpect_log(#pred, __FILE__, __LINE__); \
+  } while(0)
+
+/* assert that an err_t is NULL; evaluate exactly once */
+# define happy(x) { \
+       err_t ugh = x; \
+       if (ugh != NULL) \
+         if(openswan_passert_fail) { (*openswan_passert_fail)(ugh, __FILE__, __LINE__); }  \
+    }
+
+#else /*!DEBUG*/
+
+# define impossible() abort()
+# define bad_case(n) abort()
+# define passert(pred)  { }    /* do nothing */
+# define happy(x)  { (void) x; }       /* evaluate non-judgementally */
+
+#endif /*!DEBUG*/
+
+#endif /* _OPENSWAN_PASSERT_H */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/openswan/pfkey_debug.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,54 @@
+/*
+ * sanitize a string into a printable format.
+ *
+ * Copyright (C) 1998-2002  D. Hugh Redelmeier.
+ * Copyright (C) 2003  Michael Richardson <mcr@freeswan.org>
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id: pfkey_debug.h,v 1.3 2004-04-05 19:55:07 mcr Exp $
+ */
+
+#ifndef _FREESWAN_PFKEY_DEBUG_H
+#define _FREESWAN_PFKEY_DEBUG_H
+
+#ifdef __KERNEL__
+
+/* note, kernel version ignores pfkey levels */
+# define DEBUGGING(level,args...) \
+         KLIPS_PRINT(debug_pfkey, "klips_debug:" args)
+
+# define ERROR(args...) printk(KERN_ERR "klips:" args)
+
+#else
+
+extern unsigned int pfkey_lib_debug;
+
+extern void (*pfkey_debug_func)(const char *message, ...) PRINTF_LIKE(1);
+extern void (*pfkey_error_func)(const char *message, ...) PRINTF_LIKE(1);
+
+#define DEBUGGING(level,args...)  if(pfkey_lib_debug & level) { \
+                              if(pfkey_debug_func != NULL) { \
+                                (*pfkey_debug_func)("pfkey_lib_debug:" args); \
+                              } else { \
+                                printf("pfkey_lib_debug:" args); \
+                              } }
+
+#define ERROR(args...)      if(pfkey_error_func != NULL) { \
+                                (*pfkey_error_func)("pfkey_lib_debug:" args); \
+                              } 
+
+# define MALLOC(size) malloc(size)
+# define FREE(obj) free(obj)
+
+#endif
+
+#endif
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/openswan/radij.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,280 @@
+/*
+ * RCSID $Id: radij.h,v 1.13 2004-04-05 19:55:08 mcr Exp $
+ */
+
+/*
+ * This file is defived from ${SRC}/sys/net/radix.h of BSD 4.4lite
+ *
+ * Variable and procedure names have been modified so that they don't
+ * conflict with the original BSD code, as a small number of modifications
+ * have been introduced and we may want to reuse this code in BSD.
+ * 
+ * The `j' in `radij' is pronounced as a voiceless guttural (like a Greek
+ * chi or a German ch sound (as `doch', not as in `milch'), or even a 
+ * spanish j as in Juan.  It is not as far back in the throat like
+ * the corresponding Hebrew sound, nor is it a soft breath like the English h.
+ * It has nothing to do with the Dutch ij sound.
+ * 
+ * Here is the appropriate copyright notice:
+ */
+
+/*
+ * Copyright (c) 1988, 1989, 1993
+ *     The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *     This product includes software developed by the University of
+ *     California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *     @(#)radix.h     8.1 (Berkeley) 6/10/93
+ */
+
+#ifndef _RADIJ_H_
+#define        _RADIJ_H_
+
+/* 
+#define RJ_DEBUG
+*/
+
+#ifdef __KERNEL__
+
+#ifndef __P
+#ifdef __STDC__
+#define __P(x)  x
+#else
+#define __P(x)  ()
+#endif
+#endif
+
+/*
+ * Radix search tree node layout.
+ */
+
+struct radij_node
+{
+       struct  radij_mask *rj_mklist;  /* list of masks contained in subtree */
+       struct  radij_node *rj_p;       /* parent */
+       short   rj_b;                   /* bit offset; -1-index(netmask) */
+       char    rj_bmask;               /* node: mask for bit test*/
+       u_char  rj_flags;               /* enumerated next */
+#define RJF_NORMAL     1               /* leaf contains normal route */
+#define RJF_ROOT       2               /* leaf is root leaf for tree */
+#define RJF_ACTIVE     4               /* This node is alive (for rtfree) */
+       union {
+               struct {                        /* leaf only data: */
+                       caddr_t rj_Key; /* object of search */
+                       caddr_t rj_Mask;        /* netmask, if present */
+                       struct  radij_node *rj_Dupedkey;
+               } rj_leaf;
+               struct {                        /* node only data: */
+                       int     rj_Off;         /* where to start compare */
+                       struct  radij_node *rj_L;/* progeny */
+                       struct  radij_node *rj_R;/* progeny */
+               }rj_node;
+       }               rj_u;
+#ifdef RJ_DEBUG
+       int rj_info;
+       struct radij_node *rj_twin;
+       struct radij_node *rj_ybro;
+#endif
+};
+
+#define rj_dupedkey rj_u.rj_leaf.rj_Dupedkey
+#define rj_key rj_u.rj_leaf.rj_Key
+#define rj_mask rj_u.rj_leaf.rj_Mask
+#define rj_off rj_u.rj_node.rj_Off
+#define rj_l rj_u.rj_node.rj_L
+#define rj_r rj_u.rj_node.rj_R
+
+/*
+ * Annotations to tree concerning potential routes applying to subtrees.
+ */
+
+extern struct radij_mask {
+       short   rm_b;                   /* bit offset; -1-index(netmask) */
+       char    rm_unused;              /* cf. rj_bmask */
+       u_char  rm_flags;               /* cf. rj_flags */
+       struct  radij_mask *rm_mklist;  /* more masks to try */
+       caddr_t rm_mask;                /* the mask */
+       int     rm_refs;                /* # of references to this struct */
+} *rj_mkfreelist;
+
+#define MKGet(m) {\
+       if (rj_mkfreelist) {\
+               m = rj_mkfreelist; \
+               rj_mkfreelist = (m)->rm_mklist; \
+       } else \
+               R_Malloc(m, struct radij_mask *, sizeof (*(m))); }\
+
+#define MKFree(m) { (m)->rm_mklist = rj_mkfreelist; rj_mkfreelist = (m);}
+
+struct radij_node_head {
+       struct  radij_node *rnh_treetop;
+       int     rnh_addrsize;           /* permit, but not require fixed keys */
+       int     rnh_pktsize;            /* permit, but not require fixed keys */
+#if 0
+       struct  radij_node *(*rnh_addaddr)      /* add based on sockaddr */
+               __P((void *v, void *mask,
+                    struct radij_node_head *head, struct radij_node nodes[]));
+#endif
+       int (*rnh_addaddr)      /* add based on sockaddr */
+               __P((void *v, void *mask,
+                    struct radij_node_head *head, struct radij_node nodes[]));
+       struct  radij_node *(*rnh_addpkt)       /* add based on packet hdr */
+               __P((void *v, void *mask,
+                    struct radij_node_head *head, struct radij_node nodes[]));
+#if 0
+       struct  radij_node *(*rnh_deladdr)      /* remove based on sockaddr */
+               __P((void *v, void *mask, struct radij_node_head *head));
+#endif
+       int (*rnh_deladdr)      /* remove based on sockaddr */
+               __P((void *v, void *mask, struct radij_node_head *head, struct radij_node **node));
+       struct  radij_node *(*rnh_delpkt)       /* remove based on packet hdr */
+               __P((void *v, void *mask, struct radij_node_head *head));
+       struct  radij_node *(*rnh_matchaddr)    /* locate based on sockaddr */
+               __P((void *v, struct radij_node_head *head));
+       struct  radij_node *(*rnh_matchpkt)     /* locate based on packet hdr */
+               __P((void *v, struct radij_node_head *head));
+       int     (*rnh_walktree)                 /* traverse tree */
+               __P((struct radij_node_head *head, int (*f)(struct radij_node *rn, void *w), void *w));
+       struct  radij_node rnh_nodes[3];        /* empty tree for common case */
+};
+
+
+#define Bcmp(a, b, n) memcmp(((caddr_t)(b)), ((caddr_t)(a)), (unsigned)(n))
+#define Bcopy(a, b, n) memmove(((caddr_t)(b)), ((caddr_t)(a)), (unsigned)(n))
+#define Bzero(p, n) memset((caddr_t)(p), 0, (unsigned)(n))
+#define R_Malloc(p, t, n) ((p = (t) kmalloc((size_t)(n), GFP_ATOMIC)), Bzero((p),(n)))
+#define Free(p) kfree((caddr_t)p);
+
+void    rj_init __P((void));
+int     rj_inithead __P((void **, int));
+int     rj_refines __P((void *, void *));
+int     rj_walktree __P((struct radij_node_head *head, int (*f)(struct radij_node *rn, void *w), void *w));
+struct radij_node
+        *rj_addmask __P((void *, int, int)) /* , rgb */ ;
+int /* * */ rj_addroute __P((void *, void *, struct radij_node_head *,
+                       struct radij_node [2])) /* , rgb */ ;
+int /* * */ rj_delete __P((void *, void *, struct radij_node_head *, struct radij_node **)) /* , rgb */ ;
+struct radij_node /* rgb */
+        *rj_insert __P((void *, struct radij_node_head *, int *,
+                       struct radij_node [2])),
+        *rj_match __P((void *, struct radij_node_head *)),
+        *rj_newpair __P((void *, int, struct radij_node[2])),
+        *rj_search __P((void *, struct radij_node *)),
+        *rj_search_m __P((void *, struct radij_node *, void *));
+
+void rj_deltree(struct radij_node_head *);
+void rj_delnodes(struct radij_node *);
+void rj_free_mkfreelist(void);
+int radijcleartree(void);
+int radijcleanup(void);
+
+extern struct radij_node_head *mask_rjhead;
+extern int maj_keylen;
+#endif /* __KERNEL__ */
+
+#endif /* _RADIJ_H_ */
+
+
+/*
+ * $Log: radij.h,v $
+ * Revision 1.13  2004-04-05 19:55:08  mcr
+ * Moved from linux/include/freeswan/radij.h,v
+ *
+ * Revision 1.12  2002/04/24 07:36:48  mcr
+ * Moved from ./klips/net/ipsec/radij.h,v
+ *
+ * Revision 1.11  2001/09/20 15:33:00  rgb
+ * Min/max cleanup.
+ *
+ * Revision 1.10  1999/11/18 04:09:20  rgb
+ * Replaced all kernel version macros to shorter, readable form.
+ *
+ * Revision 1.9  1999/05/05 22:02:33  rgb
+ * Add a quick and dirty port to 2.2 kernels by Marc Boucher <marc@mbsi.ca>.
+ *
+ * Revision 1.8  1999/04/29 15:24:58  rgb
+ * Add check for existence of macros min/max.
+ *
+ * Revision 1.7  1999/04/11 00:29:02  henry
+ * GPL boilerplate
+ *
+ * Revision 1.6  1999/04/06 04:54:29  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.5  1999/01/22 06:30:32  rgb
+ * 64-bit clean-up.
+ *
+ * Revision 1.4  1998/11/30 13:22:55  rgb
+ * Rationalised all the klips kernel file headers.  They are much shorter
+ * now and won't conflict under RH5.2.
+ *
+ * Revision 1.3  1998/10/25 02:43:27  rgb
+ * Change return type on rj_addroute and rj_delete and add and argument
+ * to the latter to be able to transmit more infomation about errors.
+ *
+ * Revision 1.2  1998/07/14 18:09:51  rgb
+ * Add a routine to clear eroute table.
+ * Added #ifdef __KERNEL__ directives to restrict scope of header.
+ *
+ * Revision 1.1  1998/06/18 21:30:22  henry
+ * move sources from klips/src to klips/net/ipsec to keep stupid kernel
+ * build scripts happier about symlinks
+ *
+ * Revision 1.4  1998/05/25 20:34:16  rgb
+ * Remove temporary ipsec_walk, rj_deltree and rj_delnodes functions.
+ *
+ * Rename ipsec_rj_walker (ipsec_walk) to ipsec_rj_walker_procprint and
+ * add ipsec_rj_walker_delete.
+ *
+ * Recover memory for eroute table on unload of module.
+ *
+ * Revision 1.3  1998/04/22 16:51:37  rgb
+ * Tidy up radij debug code from recent rash of modifications to debug code.
+ *
+ * Revision 1.2  1998/04/14 17:30:38  rgb
+ * Fix up compiling errors for radij tree memory reclamation.
+ *
+ * Revision 1.1  1998/04/09 03:06:16  henry
+ * sources moved up from linux/net/ipsec
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:04  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.4  1997/01/15 01:28:15  ji
+ * No changes.
+ *
+ * Revision 0.3  1996/11/20 14:44:45  ji
+ * Release update only.
+ *
+ * Revision 0.2  1996/11/02 00:18:33  ji
+ * First limited release.
+ *
+ *
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/pfkey.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,529 @@
+/*
+ * FreeS/WAN specific PF_KEY headers
+ * Copyright (C) 1999, 2000, 2001  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id: pfkey.h,v 1.49 2005-05-11 00:57:29 mcr Exp $
+ */
+
+#ifndef __NET_IPSEC_PF_KEY_H
+#define __NET_IPSEC_PF_KEY_H
+#ifdef __KERNEL__
+extern struct proto_ops pfkey_proto_ops;
+typedef struct sock pfkey_sock;
+extern int debug_pfkey;
+
+extern /* void */ int pfkey_init(void);
+extern /* void */ int pfkey_cleanup(void);
+
+struct socket_list
+{
+       struct socket *socketp;
+       struct socket_list *next;
+};
+extern int pfkey_list_insert_socket(struct socket*, struct socket_list**);
+extern int pfkey_list_remove_socket(struct socket*, struct socket_list**);
+extern struct socket_list *pfkey_open_sockets;
+extern struct socket_list *pfkey_registered_sockets[];
+
+struct ipsec_alg_supported
+{
+       uint16_t ias_exttype;
+       uint8_t  ias_id;
+       uint8_t  ias_ivlen;
+       uint16_t ias_keyminbits;
+       uint16_t ias_keymaxbits;
+        char    *ias_name;
+};
+
+extern struct supported_list *pfkey_supported_list[];
+struct supported_list
+{
+       struct ipsec_alg_supported *supportedp;
+       struct supported_list *next;
+};
+extern int pfkey_list_insert_supported(struct ipsec_alg_supported*, struct supported_list**);
+extern int pfkey_list_remove_supported(struct ipsec_alg_supported*, struct supported_list**);
+
+struct sockaddr_key
+{
+       uint16_t        key_family;     /* PF_KEY */
+       uint16_t        key_pad;        /* not used */
+       uint32_t        key_pid;        /* process ID */
+};
+
+struct pfkey_extracted_data
+{
+       struct ipsec_sa* ips;
+       struct ipsec_sa* ips2;
+       struct eroute *eroute;
+};
+
+/* forward reference */
+struct sadb_ext;
+struct sadb_msg;
+struct sockaddr;
+struct sadb_comb;
+struct sadb_sadb;
+struct sadb_alg;
+
+extern int
+pfkey_alloc_eroute(struct eroute** eroute);
+
+extern int
+pfkey_sa_process(struct sadb_ext *pfkey_ext,
+                struct pfkey_extracted_data* extr);
+
+extern int
+pfkey_lifetime_process(struct sadb_ext *pfkey_ext,
+                      struct pfkey_extracted_data* extr);
+
+extern int
+pfkey_address_process(struct sadb_ext *pfkey_ext,
+                     struct pfkey_extracted_data* extr);
+
+extern int
+pfkey_key_process(struct sadb_ext *pfkey_ext,
+                 struct pfkey_extracted_data* extr);
+
+extern int
+pfkey_ident_process(struct sadb_ext *pfkey_ext,
+                   struct pfkey_extracted_data* extr);
+
+extern int
+pfkey_sens_process(struct sadb_ext *pfkey_ext,
+                  struct pfkey_extracted_data* extr);
+
+extern int
+pfkey_prop_process(struct sadb_ext *pfkey_ext,
+                  struct pfkey_extracted_data* extr);
+
+extern int
+pfkey_supported_process(struct sadb_ext *pfkey_ext,
+                       struct pfkey_extracted_data* extr);
+
+extern int
+pfkey_spirange_process(struct sadb_ext *pfkey_ext,
+                      struct pfkey_extracted_data* extr);
+
+extern int
+pfkey_x_kmprivate_process(struct sadb_ext *pfkey_ext,
+                         struct pfkey_extracted_data* extr);
+
+extern int
+pfkey_x_satype_process(struct sadb_ext *pfkey_ext,
+                      struct pfkey_extracted_data* extr);
+
+extern int
+pfkey_x_debug_process(struct sadb_ext *pfkey_ext,
+                     struct pfkey_extracted_data* extr);
+
+extern int pfkey_upmsg(struct socket *, struct sadb_msg *);
+extern int pfkey_expire(struct ipsec_sa *, int);
+extern int pfkey_acquire(struct ipsec_sa *);
+#else /* ! __KERNEL__ */
+
+extern void (*pfkey_debug_func)(const char *message, ...);
+extern void (*pfkey_error_func)(const char *message, ...);
+extern void pfkey_print(struct sadb_msg *msg, FILE *out);
+
+
+#endif /* __KERNEL__ */
+
+extern uint8_t satype2proto(uint8_t satype);
+extern uint8_t proto2satype(uint8_t proto);
+extern char* satype2name(uint8_t satype);
+extern char* proto2name(uint8_t proto);
+
+struct key_opt
+{
+       uint32_t        key_pid;        /* process ID */
+       struct sock     *sk;
+};
+
+#define key_pid(sk) ((struct key_opt*)&((sk)->sk_protinfo))->key_pid
+
+/* XXX-mcr this is not an alignment, this is because the count is in 64-bit
+ * words.
+ */
+#define IPSEC_PFKEYv2_ALIGN (sizeof(uint64_t)/sizeof(uint8_t))
+#define BITS_PER_OCTET 8
+#define OCTETBITS 8
+#define PFKEYBITS 64
+#define DIVUP(x,y) ((x + y -1) / y) /* divide, rounding upwards */
+#define ALIGN_N(x,y) (DIVUP(x,y) * y) /* align on y boundary */
+
+#define IPSEC_PFKEYv2_LEN(x)   ((x) * IPSEC_PFKEYv2_ALIGN)
+#define IPSEC_PFKEYv2_WORDS(x) ((x) / IPSEC_PFKEYv2_ALIGN)
+
+
+#define PFKEYv2_MAX_MSGSIZE 4096
+
+/*
+ * PF_KEYv2 permitted and required extensions in and out bitmaps
+ */
+struct pf_key_ext_parsers_def {
+       int  (*parser)(struct sadb_ext*);
+       char  *parser_name;
+};
+
+
+#define SADB_EXTENSIONS_MAX 31
+extern unsigned int extensions_bitmaps[2/*in/out*/][2/*perm/req*/][SADB_EXTENSIONS_MAX];
+#define EXT_BITS_IN 0
+#define EXT_BITS_OUT 1
+#define EXT_BITS_PERM 0
+#define EXT_BITS_REQ 1
+
+extern void pfkey_extensions_init(struct sadb_ext *extensions[]);
+extern void pfkey_extensions_free(struct sadb_ext *extensions[]);
+extern void pfkey_msg_free(struct sadb_msg **pfkey_msg);
+
+extern int pfkey_msg_parse(struct sadb_msg *pfkey_msg,
+                          struct pf_key_ext_parsers_def *ext_parsers[],
+                          struct sadb_ext **extensions,
+                          int dir);
+
+extern int pfkey_register_reply(int satype, struct sadb_msg *sadb_msg);
+
+/*
+ * PF_KEYv2 build function prototypes
+ */
+
+int
+pfkey_msg_hdr_build(struct sadb_ext**  pfkey_ext,
+                   uint8_t             msg_type,
+                   uint8_t             satype,
+                   uint8_t             msg_errno,
+                   uint32_t            seq,
+                   uint32_t            pid);
+
+int
+pfkey_sa_ref_build(struct sadb_ext **  pfkey_ext,
+              uint16_t                 exttype,
+              uint32_t                 spi, /* in network order */
+              uint8_t                  replay_window,
+              uint8_t                  sa_state,
+              uint8_t                  auth,
+              uint8_t                  encrypt,
+              uint32_t                 flags,
+              uint32_t/*IPsecSAref_t*/ ref);
+
+int
+pfkey_sa_build(struct sadb_ext **      pfkey_ext,
+              uint16_t                 exttype,
+              uint32_t                 spi, /* in network order */
+              uint8_t                  replay_window,
+              uint8_t                  sa_state,
+              uint8_t                  auth,
+              uint8_t                  encrypt,
+              uint32_t                 flags);
+
+int
+pfkey_lifetime_build(struct sadb_ext **        pfkey_ext,
+                    uint16_t           exttype,
+                    uint32_t           allocations,
+                    uint64_t           bytes,
+                    uint64_t           addtime,
+                    uint64_t           usetime,
+                    uint32_t           packets);
+
+int
+pfkey_address_build(struct sadb_ext**  pfkey_ext,
+                   uint16_t            exttype,
+                   uint8_t             proto,
+                   uint8_t             prefixlen,
+                   struct sockaddr*    address);
+
+int
+pfkey_key_build(struct sadb_ext**      pfkey_ext,
+               uint16_t                exttype,
+               uint16_t                key_bits,
+               char*                   key);
+
+int
+pfkey_ident_build(struct sadb_ext**    pfkey_ext,
+                 uint16_t              exttype,
+                 uint16_t              ident_type,
+                 uint64_t              ident_id,
+                 uint8_t               ident_len,
+                 char*                 ident_string);
+
+#ifdef __KERNEL__
+extern int pfkey_nat_t_new_mapping(struct ipsec_sa *, struct sockaddr *, __u16);
+extern int pfkey_x_nat_t_type_process(struct sadb_ext *pfkey_ext, struct pfkey_extracted_data* extr);
+extern int pfkey_x_nat_t_port_process(struct sadb_ext *pfkey_ext, struct pfkey_extracted_data* extr);
+#endif /* __KERNEL__ */
+int
+pfkey_x_nat_t_type_build(struct sadb_ext**  pfkey_ext,
+            uint8_t         type);
+int
+pfkey_x_nat_t_port_build(struct sadb_ext**  pfkey_ext,
+            uint16_t         exttype,
+            uint16_t         port);
+
+int
+pfkey_sens_build(struct sadb_ext**     pfkey_ext,
+                uint32_t               dpd,
+                uint8_t                sens_level,
+                uint8_t                sens_len,
+                uint64_t*              sens_bitmap,
+                uint8_t                integ_level,
+                uint8_t                integ_len,
+                uint64_t*              integ_bitmap);
+
+int pfkey_x_protocol_build(struct sadb_ext **, uint8_t);
+
+
+int
+pfkey_prop_build(struct sadb_ext**     pfkey_ext,
+                uint8_t                replay,
+                unsigned int           comb_num,
+                struct sadb_comb*      comb);
+
+int
+pfkey_supported_build(struct sadb_ext**        pfkey_ext,
+                     uint16_t          exttype,
+                     unsigned int      alg_num,
+                     struct sadb_alg*  alg);
+
+int
+pfkey_spirange_build(struct sadb_ext** pfkey_ext,
+                    uint16_t           exttype,
+                    uint32_t           min,
+                    uint32_t           max);
+
+int
+pfkey_x_kmprivate_build(struct sadb_ext**      pfkey_ext);
+
+int
+pfkey_x_satype_build(struct sadb_ext** pfkey_ext,
+                    uint8_t            satype);
+
+int
+pfkey_x_debug_build(struct sadb_ext**  pfkey_ext,
+                   uint32_t            tunnel,
+                   uint32_t            netlink,
+                   uint32_t            xform,
+                   uint32_t            eroute,
+                   uint32_t            spi,
+                   uint32_t            radij,
+                   uint32_t            esp,
+                   uint32_t            ah,
+                   uint32_t            rcv,
+                   uint32_t            pfkey,
+                   uint32_t            ipcomp,
+                   uint32_t            verbose);
+
+int
+pfkey_msg_build(struct sadb_msg**      pfkey_msg,
+               struct sadb_ext*        extensions[],
+               int                     dir);
+
+/* in pfkey_v2_debug.c - routines to decode numbers -> strings */
+const char *
+pfkey_v2_sadb_ext_string(int extnum);
+
+const char *
+pfkey_v2_sadb_type_string(int sadb_type);
+
+
+#endif /* __NET_IPSEC_PF_KEY_H */
+
+/*
+ * $Log: pfkey.h,v $
+ * Revision 1.49  2005-05-11 00:57:29  mcr
+ *     rename struct supported -> struct ipsec_alg_supported.
+ *     make pfkey.h more standalone.
+ *
+ * Revision 1.48  2005/05/01 03:12:50  mcr
+ *     include name of algorithm in datastructure.
+ *
+ * Revision 1.47  2004/08/21 00:44:14  mcr
+ *     simplify definition of nat_t related prototypes.
+ *
+ * Revision 1.46  2004/08/04 16:27:22  mcr
+ *     2.6 sk_ options.
+ *
+ * Revision 1.45  2004/04/06 02:49:00  mcr
+ *     pullup of algo code from alg-branch.
+ *
+ * Revision 1.44  2003/12/10 01:20:01  mcr
+ *     NAT-traversal patches to KLIPS.
+ *
+ * Revision 1.43  2003/10/31 02:26:44  mcr
+ *     pulled up port-selector patches.
+ *
+ * Revision 1.42.2.2  2003/10/29 01:09:32  mcr
+ *     added debugging for pfkey library.
+ *
+ * Revision 1.42.2.1  2003/09/21 13:59:34  mcr
+ *     pre-liminary X.509 patch - does not yet pass tests.
+ *
+ * Revision 1.42  2003/08/25 22:08:19  mcr
+ *     removed pfkey_proto_init() from pfkey.h for 2.6 support.
+ *
+ * Revision 1.41  2003/05/07 17:28:57  mcr
+ *     new function pfkey_debug_func added for us in debugging from
+
+ *     pfkey library.
+ *
+ * Revision 1.40  2003/01/30 02:31:34  rgb
+ *
+ * Convert IPsecSAref_t from signed to unsigned to fix apparent SAref exhaustion bug.
+ *
+ * Revision 1.39  2002/09/20 15:40:21  rgb
+ * Switch from pfkey_alloc_ipsec_sa() to ipsec_sa_alloc().
+ * Added ref parameter to pfkey_sa_build().
+ * Cleaned out unused cruft.
+ *
+ * Revision 1.38  2002/05/14 02:37:24  rgb
+ * Change all references to tdb, TDB or Tunnel Descriptor Block to ips,
+ * ipsec_sa or ipsec_sa.
+ * Added function prototypes for the functions moved to
+ * pfkey_v2_ext_process.c.
+ *
+ * Revision 1.37  2002/04/24 07:36:49  mcr
+ * Moved from ./lib/pfkey.h,v
+ *
+ * Revision 1.36  2002/01/20 20:34:49  mcr
+ *     added pfkey_v2_sadb_type_string to decode sadb_type to string.
+ *
+ * Revision 1.35  2001/11/27 05:27:47  mcr
+ *     pfkey parses are now maintained by a structure
+ *     that includes their name for debug purposes.
+ *
+ * Revision 1.34  2001/11/26 09:23:53  rgb
+ * Merge MCR's ipsec_sa, eroute, proc and struct lifetime changes.
+ *
+ * Revision 1.33  2001/11/06 19:47:47  rgb
+ * Added packet parameter to lifetime and comb structures.
+ *
+ * Revision 1.32  2001/09/08 21:13:34  rgb
+ * Added pfkey ident extension support for ISAKMPd. (NetCelo)
+ *
+ * Revision 1.31  2001/06/14 19:35:16  rgb
+ * Update copyright date.
+ *
+ * Revision 1.30  2001/02/27 07:04:52  rgb
+ * Added satype2name prototype.
+ *
+ * Revision 1.29  2001/02/26 19:59:33  rgb
+ * Ditch unused sadb_satype2proto[], replaced by satype2proto().
+ *
+ * Revision 1.28  2000/10/10 20:10:19  rgb
+ * Added support for debug_ipcomp and debug_verbose to klipsdebug.
+ *
+ * Revision 1.27  2000/09/21 04:20:45  rgb
+ * Fixed array size off-by-one error.  (Thanks Svenning!)
+ *
+ * Revision 1.26  2000/09/12 03:26:05  rgb
+ * Added pfkey_acquire prototype.
+ *
+ * Revision 1.25  2000/09/08 19:21:28  rgb
+ * Fix pfkey_prop_build() parameter to be only single indirection.
+ *
+ * Revision 1.24  2000/09/01 18:46:42  rgb
+ * Added a supported algorithms array lists, one per satype and registered
+ * existing algorithms.
+ * Fixed pfkey_list_{insert,remove}_{socket,support}() to allow change to
+ * list.
+ *
+ * Revision 1.23  2000/08/27 01:55:26  rgb
+ * Define OCTETBITS and PFKEYBITS to avoid using 'magic' numbers in code.
+ *
+ * Revision 1.22  2000/08/20 21:39:23  rgb
+ * Added kernel prototypes for kernel funcitions pfkey_upmsg() and
+ * pfkey_expire().
+ *
+ * Revision 1.21  2000/08/15 17:29:23  rgb
+ * Fixes from SZI to untested pfkey_prop_build().
+ *
+ * Revision 1.20  2000/05/10 20:14:19  rgb
+ * Fleshed out sensitivity, proposal and supported extensions.
+ *
+ * Revision 1.19  2000/03/16 14:07:23  rgb
+ * Renamed ALIGN macro to avoid fighting with others in kernel.
+ *
+ * Revision 1.18  2000/01/22 23:24:06  rgb
+ * Added prototypes for proto2satype(), satype2proto() and proto2name().
+ *
+ * Revision 1.17  2000/01/21 06:26:59  rgb
+ * Converted from double tdb arguments to one structure (extr)
+ * containing pointers to all temporary information structures.
+ * Added klipsdebug switching capability.
+ * Dropped unused argument to pfkey_x_satype_build().
+ *
+ * Revision 1.16  1999/12/29 21:17:41  rgb
+ * Changed pfkey_msg_build() I/F to include a struct sadb_msg**
+ * parameter for cleaner manipulation of extensions[] and to guard
+ * against potential memory leaks.
+ * Changed the I/F to pfkey_msg_free() for the same reason.
+ *
+ * Revision 1.15  1999/12/09 23:12:54  rgb
+ * Added macro for BITS_PER_OCTET.
+ * Added argument to pfkey_sa_build() to do eroutes.
+ *
+ * Revision 1.14  1999/12/08 20:33:25  rgb
+ * Changed sa_family_t to uint16_t for 2.0.xx compatibility.
+ *
+ * Revision 1.13  1999/12/07 19:53:40  rgb
+ * Removed unused first argument from extension parsers.
+ * Changed __u* types to uint* to avoid use of asm/types.h and
+ * sys/types.h in userspace code.
+ * Added function prototypes for pfkey message and extensions
+ * initialisation and cleanup.
+ *
+ * Revision 1.12  1999/12/01 22:19:38  rgb
+ * Change pfkey_sa_build to accept an SPI in network byte order.
+ *
+ * Revision 1.11  1999/11/27 11:55:26  rgb
+ * Added extern sadb_satype2proto to enable moving protocol lookup table
+ * to lib/pfkey_v2_parse.c.
+ * Delete unused, moved typedefs.
+ * Add argument to pfkey_msg_parse() for direction.
+ * Consolidated the 4 1-d extension bitmap arrays into one 4-d array.
+ *
+ * Revision 1.10  1999/11/23 22:29:21  rgb
+ * This file has been moved in the distribution from klips/net/ipsec to
+ * lib.
+ * Add macros for dealing with alignment and rounding up more opaquely.
+ * The uint<n>_t type defines have been moved to freeswan.h to avoid
+ * chicken-and-egg problems.
+ * Add macros for dealing with alignment and rounding up more opaque.
+ * Added prototypes for using extention header bitmaps.
+ * Added prototypes of all the build functions.
+ *
+ * Revision 1.9  1999/11/20 21:59:48  rgb
+ * Moved socketlist type declarations and prototypes for shared use.
+ * Slightly modified scope of sockaddr_key declaration.
+ *
+ * Revision 1.8  1999/11/17 14:34:25  rgb
+ * Protect sa_family_t from being used in userspace with GLIBC<2.
+ *
+ * Revision 1.7  1999/10/27 19:40:35  rgb
+ * Add a maximum PFKEY packet size macro.
+ *
+ * Revision 1.6  1999/10/26 16:58:58  rgb
+ * Created a sockaddr_key and key_opt socket extension structures.
+ *
+ * Revision 1.5  1999/06/10 05:24:41  rgb
+ * Renamed variables to reduce confusion.
+ *
+ * Revision 1.4  1999/04/29 15:21:11  rgb
+ * Add pfkey support to debugging.
+ * Add return values to init and cleanup functions.
+ *
+ * Revision 1.3  1999/04/15 17:58:07  rgb
+ * Add RCSID labels.
+ *
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/pfkeyv2.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,472 @@
+/*
+ * RCSID $Id: pfkeyv2.h,v 1.31 2005-04-14 01:14:54 mcr Exp $
+ */
+
+/*
+RFC 2367               PF_KEY Key Management API               July 1998
+
+
+Appendix D: Sample Header File
+
+This file defines structures and symbols for the PF_KEY Version 2
+key management interface. It was written at the U.S. Naval Research
+Laboratory. This file is in the public domain. The authors ask that
+you leave this credit intact on any copies of this file.
+*/
+#ifndef __PFKEY_V2_H
+#define __PFKEY_V2_H 1
+
+#define PF_KEY_V2 2
+#define PFKEYV2_REVISION        199806L
+
+#define SADB_RESERVED    0
+#define SADB_GETSPI      1
+#define SADB_UPDATE      2
+#define SADB_ADD         3
+#define SADB_DELETE      4
+#define SADB_GET         5
+#define SADB_ACQUIRE     6
+#define SADB_REGISTER    7
+#define SADB_EXPIRE      8
+#define SADB_FLUSH       9
+#define SADB_DUMP       10
+#define SADB_X_PROMISC  11
+#define SADB_X_PCHANGE  12
+#define SADB_X_GRPSA    13
+#define SADB_X_ADDFLOW 14
+#define SADB_X_DELFLOW 15
+#define SADB_X_DEBUG   16
+#define SADB_X_NAT_T_NEW_MAPPING  17
+#define SADB_MAX                  17
+
+struct sadb_msg {
+  uint8_t sadb_msg_version;
+  uint8_t sadb_msg_type;
+  uint8_t sadb_msg_errno;
+  uint8_t sadb_msg_satype;
+  uint16_t sadb_msg_len;
+  uint16_t sadb_msg_reserved;
+  uint32_t sadb_msg_seq;
+  uint32_t sadb_msg_pid;
+};
+
+struct sadb_ext {
+  uint16_t sadb_ext_len;
+  uint16_t sadb_ext_type;
+};
+
+struct sadb_sa {
+  uint16_t sadb_sa_len;
+  uint16_t sadb_sa_exttype;
+  uint32_t sadb_sa_spi;
+  uint8_t sadb_sa_replay;
+  uint8_t sadb_sa_state;
+  uint8_t sadb_sa_auth;
+  uint8_t sadb_sa_encrypt;
+  uint32_t sadb_sa_flags;
+  uint32_t /*IPsecSAref_t*/ sadb_x_sa_ref; /* 32 bits */
+  uint8_t sadb_x_reserved[4];
+};
+
+struct sadb_sa_v1 {
+  uint16_t sadb_sa_len;
+  uint16_t sadb_sa_exttype;
+  uint32_t sadb_sa_spi;
+  uint8_t sadb_sa_replay;
+  uint8_t sadb_sa_state;
+  uint8_t sadb_sa_auth;
+  uint8_t sadb_sa_encrypt;
+  uint32_t sadb_sa_flags;
+};
+
+struct sadb_lifetime {
+  uint16_t sadb_lifetime_len;
+  uint16_t sadb_lifetime_exttype;
+  uint32_t sadb_lifetime_allocations;
+  uint64_t sadb_lifetime_bytes;
+  uint64_t sadb_lifetime_addtime;
+  uint64_t sadb_lifetime_usetime;
+  uint32_t sadb_x_lifetime_packets;
+  uint32_t sadb_x_lifetime_reserved;
+};
+
+struct sadb_address {
+  uint16_t sadb_address_len;
+  uint16_t sadb_address_exttype;
+  uint8_t sadb_address_proto;
+  uint8_t sadb_address_prefixlen;
+  uint16_t sadb_address_reserved;
+};
+
+struct sadb_key {
+  uint16_t sadb_key_len;
+  uint16_t sadb_key_exttype;
+  uint16_t sadb_key_bits;
+  uint16_t sadb_key_reserved;
+};
+
+struct sadb_ident {
+  uint16_t sadb_ident_len;
+  uint16_t sadb_ident_exttype;
+  uint16_t sadb_ident_type;
+  uint16_t sadb_ident_reserved;
+  uint64_t sadb_ident_id;
+};
+
+struct sadb_sens {
+  uint16_t sadb_sens_len;
+  uint16_t sadb_sens_exttype;
+  uint32_t sadb_sens_dpd;
+  uint8_t sadb_sens_sens_level;
+  uint8_t sadb_sens_sens_len;
+  uint8_t sadb_sens_integ_level;
+  uint8_t sadb_sens_integ_len;
+  uint32_t sadb_sens_reserved;
+};
+
+struct sadb_prop {
+  uint16_t sadb_prop_len;
+  uint16_t sadb_prop_exttype;
+  uint8_t sadb_prop_replay;
+  uint8_t sadb_prop_reserved[3];
+};
+
+struct sadb_comb {
+  uint8_t sadb_comb_auth;
+  uint8_t sadb_comb_encrypt;
+  uint16_t sadb_comb_flags;
+  uint16_t sadb_comb_auth_minbits;
+  uint16_t sadb_comb_auth_maxbits;
+  uint16_t sadb_comb_encrypt_minbits;
+  uint16_t sadb_comb_encrypt_maxbits;
+  uint32_t sadb_comb_reserved;
+  uint32_t sadb_comb_soft_allocations;
+  uint32_t sadb_comb_hard_allocations;
+  uint64_t sadb_comb_soft_bytes;
+  uint64_t sadb_comb_hard_bytes;
+  uint64_t sadb_comb_soft_addtime;
+  uint64_t sadb_comb_hard_addtime;
+  uint64_t sadb_comb_soft_usetime;
+  uint64_t sadb_comb_hard_usetime;
+  uint32_t sadb_x_comb_soft_packets;
+  uint32_t sadb_x_comb_hard_packets;
+};
+
+struct sadb_supported {
+  uint16_t sadb_supported_len;
+  uint16_t sadb_supported_exttype;
+  uint32_t sadb_supported_reserved;
+};
+
+struct sadb_alg {
+  uint8_t sadb_alg_id;
+  uint8_t sadb_alg_ivlen;
+  uint16_t sadb_alg_minbits;
+  uint16_t sadb_alg_maxbits;
+  uint16_t sadb_alg_reserved;
+};
+
+struct sadb_spirange {
+  uint16_t sadb_spirange_len;
+  uint16_t sadb_spirange_exttype;
+  uint32_t sadb_spirange_min;
+  uint32_t sadb_spirange_max;
+  uint32_t sadb_spirange_reserved;
+};
+
+struct sadb_x_kmprivate {
+  uint16_t sadb_x_kmprivate_len;
+  uint16_t sadb_x_kmprivate_exttype;
+  uint32_t sadb_x_kmprivate_reserved;
+};
+
+struct sadb_x_satype {
+  uint16_t sadb_x_satype_len;
+  uint16_t sadb_x_satype_exttype;
+  uint8_t sadb_x_satype_satype;
+  uint8_t sadb_x_satype_reserved[3];
+};
+  
+struct sadb_x_policy {
+  uint16_t sadb_x_policy_len;
+  uint16_t sadb_x_policy_exttype;
+  uint16_t sadb_x_policy_type;
+  uint8_t sadb_x_policy_dir;
+  uint8_t sadb_x_policy_reserved;
+  uint32_t sadb_x_policy_id;
+  uint32_t sadb_x_policy_reserved2;
+};
+ 
+struct sadb_x_debug {
+  uint16_t sadb_x_debug_len;
+  uint16_t sadb_x_debug_exttype;
+  uint32_t sadb_x_debug_tunnel;
+  uint32_t sadb_x_debug_netlink;
+  uint32_t sadb_x_debug_xform;
+  uint32_t sadb_x_debug_eroute;
+  uint32_t sadb_x_debug_spi;
+  uint32_t sadb_x_debug_radij;
+  uint32_t sadb_x_debug_esp;
+  uint32_t sadb_x_debug_ah;
+  uint32_t sadb_x_debug_rcv;
+  uint32_t sadb_x_debug_pfkey;
+  uint32_t sadb_x_debug_ipcomp;
+  uint32_t sadb_x_debug_verbose;
+  uint8_t sadb_x_debug_reserved[4];
+};
+
+struct sadb_x_nat_t_type {
+  uint16_t sadb_x_nat_t_type_len;
+  uint16_t sadb_x_nat_t_type_exttype;
+  uint8_t sadb_x_nat_t_type_type;
+  uint8_t sadb_x_nat_t_type_reserved[3];
+};
+struct sadb_x_nat_t_port {
+  uint16_t sadb_x_nat_t_port_len;
+  uint16_t sadb_x_nat_t_port_exttype;
+  uint16_t sadb_x_nat_t_port_port;
+  uint16_t sadb_x_nat_t_port_reserved;
+};
+
+/*
+ * A protocol structure for passing through the transport level
+ * protocol.  It contains more fields than are actually used/needed
+ * but it is this way to be compatible with the structure used in
+ * OpenBSD (http://www.openbsd.org/cgi-bin/cvsweb/src/sys/net/pfkeyv2.h)
+ */
+struct sadb_protocol {
+  uint16_t sadb_protocol_len;
+  uint16_t sadb_protocol_exttype;
+  uint8_t  sadb_protocol_proto;
+  uint8_t  sadb_protocol_direction;
+  uint8_t  sadb_protocol_flags;
+  uint8_t  sadb_protocol_reserved2;
+};
+
+#define SADB_EXT_RESERVED             0
+#define SADB_EXT_SA                   1
+#define SADB_EXT_LIFETIME_CURRENT     2
+#define SADB_EXT_LIFETIME_HARD        3
+#define SADB_EXT_LIFETIME_SOFT        4
+#define SADB_EXT_ADDRESS_SRC          5
+#define SADB_EXT_ADDRESS_DST          6
+#define SADB_EXT_ADDRESS_PROXY        7
+#define SADB_EXT_KEY_AUTH             8
+#define SADB_EXT_KEY_ENCRYPT          9
+#define SADB_EXT_IDENTITY_SRC         10
+#define SADB_EXT_IDENTITY_DST         11
+#define SADB_EXT_SENSITIVITY          12
+#define SADB_EXT_PROPOSAL             13
+#define SADB_EXT_SUPPORTED_AUTH       14
+#define SADB_EXT_SUPPORTED_ENCRYPT    15
+#define SADB_EXT_SPIRANGE             16
+#define SADB_X_EXT_KMPRIVATE          17
+#define SADB_X_EXT_SATYPE2            18
+#ifdef KERNEL26_HAS_KAME_DUPLICATES
+#define SADB_X_EXT_POLICY             18
+#endif
+#define SADB_X_EXT_SA2                19
+#define SADB_X_EXT_ADDRESS_DST2       20
+#define SADB_X_EXT_ADDRESS_SRC_FLOW   21
+#define SADB_X_EXT_ADDRESS_DST_FLOW   22
+#define SADB_X_EXT_ADDRESS_SRC_MASK   23
+#define SADB_X_EXT_ADDRESS_DST_MASK   24
+#define SADB_X_EXT_DEBUG              25
+#define SADB_X_EXT_PROTOCOL           26
+#define SADB_X_EXT_NAT_T_TYPE         27
+#define SADB_X_EXT_NAT_T_SPORT        28
+#define SADB_X_EXT_NAT_T_DPORT        29
+#define SADB_X_EXT_NAT_T_OA           30
+#define SADB_EXT_MAX                  30
+
+/* SADB_X_DELFLOW required over and above SADB_X_SAFLAGS_CLEARFLOW */
+#define SADB_X_EXT_ADDRESS_DELFLOW \
+       ( (1<<SADB_X_EXT_ADDRESS_SRC_FLOW) \
+       | (1<<SADB_X_EXT_ADDRESS_DST_FLOW) \
+       | (1<<SADB_X_EXT_ADDRESS_SRC_MASK) \
+       | (1<<SADB_X_EXT_ADDRESS_DST_MASK))
+
+#define SADB_SATYPE_UNSPEC    0
+#define SADB_SATYPE_AH        2
+#define SADB_SATYPE_ESP       3
+#define SADB_SATYPE_RSVP      5
+#define SADB_SATYPE_OSPFV2    6
+#define SADB_SATYPE_RIPV2     7
+#define SADB_SATYPE_MIP       8
+#define SADB_X_SATYPE_IPIP    9
+#ifdef KERNEL26_HAS_KAME_DUPLICATES
+#define SADB_X_SATYPE_IPCOMP  9   /* ICK! */
+#endif
+#define SADB_X_SATYPE_COMP    10
+#define SADB_X_SATYPE_INT     11
+#define SADB_SATYPE_MAX       11
+
+enum sadb_sastate {
+  SADB_SASTATE_LARVAL=0,
+  SADB_SASTATE_MATURE=1,
+  SADB_SASTATE_DYING=2,
+  SADB_SASTATE_DEAD=3
+};
+#define SADB_SASTATE_MAX 3
+
+#define SADB_SAFLAGS_PFS               1
+#define SADB_X_SAFLAGS_REPLACEFLOW     2
+#define SADB_X_SAFLAGS_CLEARFLOW       4
+#define SADB_X_SAFLAGS_INFLOW          8
+
+/* not obvious, but these are the same values as used in isakmp,
+ * and in freeswan/ipsec_policy.h. If you need to add any, they
+ * should be added as according to 
+ *   http://www.iana.org/assignments/isakmp-registry
+ * 
+ * and if not, then please try to use a private-use value, and
+ * consider asking IANA to assign a value.
+ */
+#define SADB_AALG_NONE                  0
+#define SADB_AALG_MD5HMAC               2
+#define SADB_AALG_SHA1HMAC              3
+#define SADB_X_AALG_SHA2_256HMAC       5
+#define SADB_X_AALG_SHA2_384HMAC       6
+#define SADB_X_AALG_SHA2_512HMAC       7
+#define SADB_X_AALG_RIPEMD160HMAC      8
+#define SADB_X_AALG_NULL               251     /* kame */
+#define SADB_AALG_MAX                  251
+
+#define SADB_EALG_NONE                  0
+#define SADB_EALG_DESCBC                2
+#define SADB_EALG_3DESCBC               3
+#define SADB_X_EALG_CASTCBC            6
+#define SADB_X_EALG_BLOWFISHCBC                7
+#define SADB_EALG_NULL                 11
+#define SADB_X_EALG_AESCBC             12
+#define SADB_EALG_MAX                  255
+
+#define SADB_X_CALG_NONE          0
+#define SADB_X_CALG_OUI           1
+#define SADB_X_CALG_DEFLATE       2
+#define SADB_X_CALG_LZS           3
+#define SADB_X_CALG_V42BIS        4
+#ifdef KERNEL26_HAS_KAME_DUPLICATES
+#define SADB_X_CALG_LZJH          4
+#endif
+#define SADB_X_CALG_MAX           4
+
+#define SADB_X_TALG_NONE          0
+#define SADB_X_TALG_IPv4_in_IPv4  1
+#define SADB_X_TALG_IPv6_in_IPv4  2
+#define SADB_X_TALG_IPv4_in_IPv6  3
+#define SADB_X_TALG_IPv6_in_IPv6  4
+#define SADB_X_TALG_MAX           4
+
+
+#define SADB_IDENTTYPE_RESERVED   0
+#define SADB_IDENTTYPE_PREFIX     1
+#define SADB_IDENTTYPE_FQDN       2
+#define SADB_IDENTTYPE_USERFQDN   3
+#define SADB_X_IDENTTYPE_CONNECTION 4
+#define SADB_IDENTTYPE_MAX        4
+
+#define SADB_KEY_FLAGS_MAX     0
+#endif /* __PFKEY_V2_H */
+
+/*
+ * $Log: pfkeyv2.h,v $
+ * Revision 1.31  2005-04-14 01:14:54  mcr
+ *     change sadb_state to an enum.
+ *
+ * Revision 1.30  2004/04/06 02:49:00  mcr
+ *     pullup of algo code from alg-branch.
+ *
+ * Revision 1.29  2003/12/22 21:35:58  mcr
+ *     new patches from Dr{Who}.
+ *
+ * Revision 1.28  2003/12/22 19:33:15  mcr
+ *     added 0.6c NAT-T patch.
+ *
+ * Revision 1.27  2003/12/10 01:20:01  mcr
+ *     NAT-traversal patches to KLIPS.
+ *
+ * Revision 1.26  2003/10/31 02:26:44  mcr
+ *     pulled up port-selector patches.
+ *
+ * Revision 1.25.4.1  2003/09/21 13:59:34  mcr
+ *     pre-liminary X.509 patch - does not yet pass tests.
+ *
+ * Revision 1.25  2003/07/31 23:59:17  mcr
+ *     re-introduce kernel 2.6 duplicate values for now.
+ *     hope to get them changed!
+ *
+ * Revision 1.24  2003/07/31 22:55:27  mcr
+ *     added some definitions to keep pfkeyv2.h files in sync.
+ *
+ * Revision 1.23  2003/05/11 00:43:48  mcr
+ *     added comment about origin of values used
+ *
+ * Revision 1.22  2003/01/30 02:31:34  rgb
+ *
+ * Convert IPsecSAref_t from signed to unsigned to fix apparent SAref exhaustion bug.
+ *
+ * Revision 1.21  2002/12/16 19:26:49  mcr
+ *     added definition of FS 1.xx sadb structure
+ *
+ * Revision 1.20  2002/09/20 15:40:25  rgb
+ * Added sadb_x_sa_ref to struct sadb_sa.
+ *
+ * Revision 1.19  2002/04/24 07:36:49  mcr
+ * Moved from ./lib/pfkeyv2.h,v
+ *
+ * Revision 1.18  2001/11/06 19:47:47  rgb
+ * Added packet parameter to lifetime and comb structures.
+ *
+ * Revision 1.17  2001/09/08 21:13:35  rgb
+ * Added pfkey ident extension support for ISAKMPd. (NetCelo)
+ *
+ * Revision 1.16  2001/07/06 19:49:46  rgb
+ * Added SADB_X_SAFLAGS_INFLOW for supporting incoming policy checks.
+ *
+ * Revision 1.15  2001/02/26 20:00:43  rgb
+ * Added internal IP protocol 61 for magic SAs.
+ *
+ * Revision 1.14  2001/02/08 18:51:05  rgb
+ * Include RFC document title and appendix subsection title.
+ *
+ * Revision 1.13  2000/10/10 20:10:20  rgb
+ * Added support for debug_ipcomp and debug_verbose to klipsdebug.
+ *
+ * Revision 1.12  2000/09/15 06:41:50  rgb
+ * Added V42BIS constant.
+ *
+ * Revision 1.11  2000/09/12 22:35:37  rgb
+ * Restructured to remove unused extensions from CLEARFLOW messages.
+ *
+ * Revision 1.10  2000/09/12 18:50:09  rgb
+ * Added IPIP tunnel types as algo support.
+ *
+ * Revision 1.9  2000/08/21 16:47:19  rgb
+ * Added SADB_X_CALG_* macros for IPCOMP.
+ *
+ * Revision 1.8  2000/08/09 20:43:34  rgb
+ * Fixed bitmask value for SADB_X_SAFLAGS_CLEAREROUTE.
+ *
+ * Revision 1.7  2000/01/21 06:28:37  rgb
+ * Added flow add/delete message type macros.
+ * Added flow address extension type macros.
+ * Tidied up spacing.
+ * Added klipsdebug switching capability.
+ *
+ * Revision 1.6  1999/11/27 11:56:08  rgb
+ * Add SADB_X_SATYPE_COMP for compression, eventually.
+ *
+ * Revision 1.5  1999/11/23 22:23:16  rgb
+ * This file has been moved in the distribution from klips/net/ipsec to
+ * lib.
+ *
+ * Revision 1.4  1999/04/29 15:23:29  rgb
+ * Add GRPSA support.
+ * Add support for a second SATYPE, SA and DST_ADDRESS.
+ * Add IPPROTO_IPIP support.
+ *
+ * Revision 1.3  1999/04/15 17:58:08  rgb
+ * Add RCSID labels.
+ *
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/zlib/zconf.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,309 @@
+/* zconf.h -- configuration of the zlib compression library
+ * Copyright (C) 1995-2002 Jean-loup Gailly.
+ * For conditions of distribution and use, see copyright notice in zlib.h 
+ */
+
+/* @(#) $Id: zconf.h,v 1.4 2004-07-10 07:48:40 mcr Exp $ */
+
+#ifndef _ZCONF_H
+#define _ZCONF_H
+
+/*
+ * If you *really* need a unique prefix for all types and library functions,
+ * compile with -DZ_PREFIX. The "standard" zlib should be compiled without it.
+ */
+#ifdef IPCOMP_PREFIX
+#  define deflateInit_ ipcomp_deflateInit_
+#  define deflate      ipcomp_deflate
+#  define deflateEnd   ipcomp_deflateEnd
+#  define inflateInit_         ipcomp_inflateInit_
+#  define inflate      ipcomp_inflate
+#  define inflateEnd   ipcomp_inflateEnd
+#  define deflateInit2_        ipcomp_deflateInit2_
+#  define deflateSetDictionary ipcomp_deflateSetDictionary
+#  define deflateCopy  ipcomp_deflateCopy
+#  define deflateReset ipcomp_deflateReset
+#  define deflateParams        ipcomp_deflateParams
+#  define inflateInit2_        ipcomp_inflateInit2_
+#  define inflateSetDictionary ipcomp_inflateSetDictionary
+#  define inflateSync  ipcomp_inflateSync
+#  define inflateSyncPoint ipcomp_inflateSyncPoint
+#  define inflateReset ipcomp_inflateReset
+#  define compress     ipcomp_compress
+#  define compress2    ipcomp_compress2
+#  define uncompress   ipcomp_uncompress
+#  define adler32      ipcomp_adler32
+#  define crc32                ipcomp_crc32
+#  define get_crc_table ipcomp_get_crc_table
+/* SSS: these also need to be prefixed to avoid clash with ppp_deflate and ext2compression */
+#  define inflate_blocks ipcomp_deflate_blocks
+#  define inflate_blocks_free ipcomp_deflate_blocks_free
+#  define inflate_blocks_new ipcomp_inflate_blocks_new
+#  define inflate_blocks_reset ipcomp_inflate_blocks_reset
+#  define inflate_blocks_sync_point ipcomp_inflate_blocks_sync_point
+#  define inflate_set_dictionary ipcomp_inflate_set_dictionary
+#  define inflate_codes ipcomp_inflate_codes
+#  define inflate_codes_free ipcomp_inflate_codes_free
+#  define inflate_codes_new ipcomp_inflate_codes_new
+#  define inflate_fast ipcomp_inflate_fast
+#  define inflate_trees_bits ipcomp_inflate_trees_bits
+#  define inflate_trees_dynamic ipcomp_inflate_trees_dynamic
+#  define inflate_trees_fixed ipcomp_inflate_trees_fixed
+#  define inflate_flush ipcomp_inflate_flush
+#  define inflate_mask ipcomp_inflate_mask
+#  define _dist_code _ipcomp_dist_code
+#  define _length_code _ipcomp_length_code
+#  define _tr_align _ipcomp_tr_align
+#  define _tr_flush_block _ipcomp_tr_flush_block
+#  define _tr_init _ipcomp_tr_init
+#  define _tr_stored_block _ipcomp_tr_stored_block
+#  define _tr_tally _ipcomp_tr_tally
+#  define zError ipcomp_zError
+#  define z_errmsg ipcomp_z_errmsg
+#  define zlibVersion ipcomp_zlibVersion
+#  define match_init ipcomp_match_init
+#  define longest_match ipcomp_longest_match
+#endif
+
+#ifdef Z_PREFIX
+#  define Byte         z_Byte
+#  define uInt         z_uInt
+#  define uLong                z_uLong
+#  define Bytef                z_Bytef
+#  define charf                z_charf
+#  define intf         z_intf
+#  define uIntf                z_uIntf
+#  define uLongf       z_uLongf
+#  define voidpf       z_voidpf
+#  define voidp                z_voidp
+#endif
+
+#if (defined(_WIN32) || defined(__WIN32__)) && !defined(WIN32)
+#  define WIN32
+#endif
+#if defined(__GNUC__) || defined(WIN32) || defined(__386__) || defined(i386)
+#  ifndef __32BIT__
+#    define __32BIT__
+#  endif
+#endif
+#if defined(__MSDOS__) && !defined(MSDOS)
+#  define MSDOS
+#endif
+
+/*
+ * Compile with -DMAXSEG_64K if the alloc function cannot allocate more
+ * than 64k bytes at a time (needed on systems with 16-bit int).
+ */
+#if defined(MSDOS) && !defined(__32BIT__)
+#  define MAXSEG_64K
+#endif
+#ifdef MSDOS
+#  define UNALIGNED_OK
+#endif
+
+#if (defined(MSDOS) || defined(_WINDOWS) || defined(WIN32))  && !defined(STDC)
+#  define STDC
+#endif
+#if defined(__STDC__) || defined(__cplusplus) || defined(__OS2__)
+#  ifndef STDC
+#    define STDC
+#  endif
+#endif
+
+#ifndef STDC
+#  ifndef const /* cannot use !defined(STDC) && !defined(const) on Mac */
+#    define const
+#  endif
+#endif
+
+/* Some Mac compilers merge all .h files incorrectly: */
+#if defined(__MWERKS__) || defined(applec) ||defined(THINK_C) ||defined(__SC__)
+#  define NO_DUMMY_DECL
+#endif
+
+/* Old Borland C incorrectly complains about missing returns: */
+#if defined(__BORLANDC__) && (__BORLANDC__ < 0x500)
+#  define NEED_DUMMY_RETURN
+#endif
+
+
+/* Maximum value for memLevel in deflateInit2 */
+#ifndef MAX_MEM_LEVEL
+#  ifdef MAXSEG_64K
+#    define MAX_MEM_LEVEL 8
+#  else
+#    define MAX_MEM_LEVEL 9
+#  endif
+#endif
+
+/* Maximum value for windowBits in deflateInit2 and inflateInit2.
+ * WARNING: reducing MAX_WBITS makes minigzip unable to extract .gz files
+ * created by gzip. (Files created by minigzip can still be extracted by
+ * gzip.)
+ */
+#ifndef MAX_WBITS
+#  define MAX_WBITS   15 /* 32K LZ77 window */
+#endif
+
+/* The memory requirements for deflate are (in bytes):
+            (1 << (windowBits+2)) +  (1 << (memLevel+9))
+ that is: 128K for windowBits=15  +  128K for memLevel = 8  (default values)
+ plus a few kilobytes for small objects. For example, if you want to reduce
+ the default memory requirements from 256K to 128K, compile with
+     make CFLAGS="-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7"
+ Of course this will generally degrade compression (there's no free lunch).
+
+   The memory requirements for inflate are (in bytes) 1 << windowBits
+ that is, 32K for windowBits=15 (default value) plus a few kilobytes
+ for small objects.
+*/
+
+                        /* Type declarations */
+
+#ifndef OF /* function prototypes */
+#  ifdef STDC
+#    define OF(args)  args
+#  else
+#    define OF(args)  ()
+#  endif
+#endif
+
+/* The following definitions for FAR are needed only for MSDOS mixed
+ * model programming (small or medium model with some far allocations).
+ * This was tested only with MSC; for other MSDOS compilers you may have
+ * to define NO_MEMCPY in zutil.h.  If you don't need the mixed model,
+ * just define FAR to be empty.
+ */
+#if (defined(M_I86SM) || defined(M_I86MM)) && !defined(__32BIT__)
+   /* MSC small or medium model */
+#  define SMALL_MEDIUM
+#  ifdef _MSC_VER
+#    define FAR _far
+#  else
+#    define FAR far
+#  endif
+#endif
+#if defined(__BORLANDC__) && (defined(__SMALL__) || defined(__MEDIUM__))
+#  ifndef __32BIT__
+#    define SMALL_MEDIUM
+#    define FAR _far
+#  endif
+#endif
+
+/* Compile with -DZLIB_DLL for Windows DLL support */
+#if defined(ZLIB_DLL)
+#  if defined(_WINDOWS) || defined(WINDOWS)
+#    ifdef FAR
+#      undef FAR
+#    endif
+#    include <windows.h>
+#    define ZEXPORT  WINAPI
+#    ifdef WIN32
+#      define ZEXPORTVA  WINAPIV
+#    else
+#      define ZEXPORTVA  FAR _cdecl _export
+#    endif
+#  endif
+#  if defined (__BORLANDC__)
+#    if (__BORLANDC__ >= 0x0500) && defined (WIN32)
+#      include <windows.h>
+#      define ZEXPORT __declspec(dllexport) WINAPI
+#      define ZEXPORTRVA __declspec(dllexport) WINAPIV
+#    else
+#      if defined (_Windows) && defined (__DLL__)
+#        define ZEXPORT _export
+#        define ZEXPORTVA _export
+#      endif
+#    endif
+#  endif
+#endif
+
+#if defined (__BEOS__)
+#  if defined (ZLIB_DLL)
+#    define ZEXTERN extern __declspec(dllexport)
+#  else
+#    define ZEXTERN extern __declspec(dllimport)
+#  endif
+#endif
+
+#ifndef ZEXPORT
+#  define ZEXPORT
+#endif
+#ifndef ZEXPORTVA
+#  define ZEXPORTVA
+#endif
+#ifndef ZEXTERN
+#  define ZEXTERN extern
+#endif
+
+#ifndef FAR
+#   define FAR
+#endif
+
+#if !defined(MACOS) && !defined(TARGET_OS_MAC)
+typedef unsigned char  Byte;  /* 8 bits */
+#endif
+typedef unsigned int   uInt;  /* 16 bits or more */
+typedef unsigned long  uLong; /* 32 bits or more */
+
+#ifdef SMALL_MEDIUM
+   /* Borland C/C++ and some old MSC versions ignore FAR inside typedef */
+#  define Bytef Byte FAR
+#else
+   typedef Byte  FAR Bytef;
+#endif
+typedef char  FAR charf;
+typedef int   FAR intf;
+typedef uInt  FAR uIntf;
+typedef uLong FAR uLongf;
+
+#ifdef STDC
+   typedef void FAR *voidpf;
+   typedef void     *voidp;
+#else
+   typedef Byte FAR *voidpf;
+   typedef Byte     *voidp;
+#endif
+
+#ifdef HAVE_UNISTD_H
+#  include <sys/types.h> /* for off_t */
+#  include <unistd.h>    /* for SEEK_* and off_t */
+#  define z_off_t  off_t
+#endif
+#ifndef SEEK_SET
+#  define SEEK_SET        0       /* Seek from beginning of file.  */
+#  define SEEK_CUR        1       /* Seek from current position.  */
+#  define SEEK_END        2       /* Set file pointer to EOF plus "offset" */
+#endif
+#ifndef z_off_t
+#  define  z_off_t long
+#endif
+
+/* MVS linker does not support external names larger than 8 bytes */
+#if defined(__MVS__)
+#   pragma map(deflateInit_,"DEIN")
+#   pragma map(deflateInit2_,"DEIN2")
+#   pragma map(deflateEnd,"DEEND")
+#   pragma map(inflateInit_,"ININ")
+#   pragma map(inflateInit2_,"ININ2")
+#   pragma map(inflateEnd,"INEND")
+#   pragma map(inflateSync,"INSY")
+#   pragma map(inflateSetDictionary,"INSEDI")
+#   pragma map(inflate_blocks,"INBL")
+#   pragma map(inflate_blocks_new,"INBLNE")
+#   pragma map(inflate_blocks_free,"INBLFR")
+#   pragma map(inflate_blocks_reset,"INBLRE")
+#   pragma map(inflate_codes_free,"INCOFR")
+#   pragma map(inflate_codes,"INCO")
+#   pragma map(inflate_fast,"INFA")
+#   pragma map(inflate_flush,"INFLU")
+#   pragma map(inflate_mask,"INMA")
+#   pragma map(inflate_set_dictionary,"INSEDI2")
+#   pragma map(ipcomp_inflate_copyright,"INCOPY")
+#   pragma map(inflate_trees_bits,"INTRBI")
+#   pragma map(inflate_trees_dynamic,"INTRDY")
+#   pragma map(inflate_trees_fixed,"INTRFI")
+#   pragma map(inflate_trees_free,"INTRFR")
+#endif
+
+#endif /* _ZCONF_H */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/zlib/zlib.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,893 @@
+/* zlib.h -- interface of the 'zlib' general purpose compression library
+  version 1.1.4, March 11th, 2002
+
+  Copyright (C) 1995-2002 Jean-loup Gailly and Mark Adler
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+
+  Jean-loup Gailly        Mark Adler
+  jloup@gzip.org          madler@alumni.caltech.edu
+
+
+  The data format used by the zlib library is described by RFCs (Request for
+  Comments) 1950 to 1952 in the files ftp://ds.internic.net/rfc/rfc1950.txt
+  (zlib format), rfc1951.txt (deflate format) and rfc1952.txt (gzip format).
+*/
+
+#ifndef _ZLIB_H
+#define _ZLIB_H
+
+#include "zconf.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define ZLIB_VERSION "1.1.4"
+
+/* 
+     The 'zlib' compression library provides in-memory compression and
+  decompression functions, including integrity checks of the uncompressed
+  data.  This version of the library supports only one compression method
+  (deflation) but other algorithms will be added later and will have the same
+  stream interface.
+
+     Compression can be done in a single step if the buffers are large
+  enough (for example if an input file is mmap'ed), or can be done by
+  repeated calls of the compression function.  In the latter case, the
+  application must provide more input and/or consume the output
+  (providing more output space) before each call.
+
+     The library also supports reading and writing files in gzip (.gz) format
+  with an interface similar to that of stdio.
+
+     The library does not install any signal handler. The decoder checks
+  the consistency of the compressed data, so the library should never
+  crash even in case of corrupted input.
+*/
+
+typedef voidpf (*alloc_func) OF((voidpf opaque, uInt items, uInt size));
+typedef void   (*free_func)  OF((voidpf opaque, voidpf address));
+
+struct internal_state;
+
+typedef struct z_stream_s {
+    Bytef    *next_in;  /* next input byte */
+    uInt     avail_in;  /* number of bytes available at next_in */
+    uLong    total_in;  /* total nb of input bytes read so far */
+
+    Bytef    *next_out; /* next output byte should be put there */
+    uInt     avail_out; /* remaining free space at next_out */
+    uLong    total_out; /* total nb of bytes output so far */
+
+    const char     *msg;      /* last error message, NULL if no error */
+    struct internal_state FAR *state; /* not visible by applications */
+
+    alloc_func zalloc;  /* used to allocate the internal state */
+    free_func  zfree;   /* used to free the internal state */
+    voidpf     opaque;  /* private data object passed to zalloc and zfree */
+
+    int     data_type;  /* best guess about the data type: ascii or binary */
+    uLong   adler;      /* adler32 value of the uncompressed data */
+    uLong   reserved;   /* reserved for future use */
+} z_stream;
+
+typedef z_stream FAR *z_streamp;
+
+/*
+   The application must update next_in and avail_in when avail_in has
+   dropped to zero. It must update next_out and avail_out when avail_out
+   has dropped to zero. The application must initialize zalloc, zfree and
+   opaque before calling the init function. All other fields are set by the
+   compression library and must not be updated by the application.
+
+   The opaque value provided by the application will be passed as the first
+   parameter for calls of zalloc and zfree. This can be useful for custom
+   memory management. The compression library attaches no meaning to the
+   opaque value.
+
+   zalloc must return Z_NULL if there is not enough memory for the object.
+   If zlib is used in a multi-threaded application, zalloc and zfree must be
+   thread safe.
+
+   On 16-bit systems, the functions zalloc and zfree must be able to allocate
+   exactly 65536 bytes, but will not be required to allocate more than this
+   if the symbol MAXSEG_64K is defined (see zconf.h). WARNING: On MSDOS,
+   pointers returned by zalloc for objects of exactly 65536 bytes *must*
+   have their offset normalized to zero. The default allocation function
+   provided by this library ensures this (see zutil.c). To reduce memory
+   requirements and avoid any allocation of 64K objects, at the expense of
+   compression ratio, compile the library with -DMAX_WBITS=14 (see zconf.h).
+
+   The fields total_in and total_out can be used for statistics or
+   progress reports. After compression, total_in holds the total size of
+   the uncompressed data and may be saved for use in the decompressor
+   (particularly if the decompressor wants to decompress everything in
+   a single step).
+*/
+
+                        /* constants */
+
+#define Z_NO_FLUSH      0
+#define Z_PARTIAL_FLUSH 1 /* will be removed, use Z_SYNC_FLUSH instead */
+#define Z_SYNC_FLUSH    2
+#define Z_FULL_FLUSH    3
+#define Z_FINISH        4
+/* Allowed flush values; see deflate() below for details */
+
+#define Z_OK            0
+#define Z_STREAM_END    1
+#define Z_NEED_DICT     2
+#define Z_ERRNO        (-1)
+#define Z_STREAM_ERROR (-2)
+#define Z_DATA_ERROR   (-3)
+#define Z_MEM_ERROR    (-4)
+#define Z_BUF_ERROR    (-5)
+#define Z_VERSION_ERROR (-6)
+/* Return codes for the compression/decompression functions. Negative
+ * values are errors, positive values are used for special but normal events.
+ */
+
+#define Z_NO_COMPRESSION         0
+#define Z_BEST_SPEED             1
+#define Z_BEST_COMPRESSION       9
+#define Z_DEFAULT_COMPRESSION  (-1)
+/* compression levels */
+
+#define Z_FILTERED            1
+#define Z_HUFFMAN_ONLY        2
+#define Z_DEFAULT_STRATEGY    0
+/* compression strategy; see deflateInit2() below for details */
+
+#define Z_BINARY   0
+#define Z_ASCII    1
+#define Z_UNKNOWN  2
+/* Possible values of the data_type field */
+
+#define Z_DEFLATED   8
+/* The deflate compression method (the only one supported in this version) */
+
+#define Z_NULL  0  /* for initializing zalloc, zfree, opaque */
+
+#define zlib_version zlibVersion()
+/* for compatibility with versions < 1.0.2 */
+
+                        /* basic functions */
+
+ZEXTERN const char * ZEXPORT zlibVersion OF((void));
+/* The application can compare zlibVersion and ZLIB_VERSION for consistency.
+   If the first character differs, the library code actually used is
+   not compatible with the zlib.h header file used by the application.
+   This check is automatically made by deflateInit and inflateInit.
+ */
+
+/* 
+ZEXTERN int ZEXPORT deflateInit OF((z_streamp strm, int level));
+
+     Initializes the internal stream state for compression. The fields
+   zalloc, zfree and opaque must be initialized before by the caller.
+   If zalloc and zfree are set to Z_NULL, deflateInit updates them to
+   use default allocation functions.
+
+     The compression level must be Z_DEFAULT_COMPRESSION, or between 0 and 9:
+   1 gives best speed, 9 gives best compression, 0 gives no compression at
+   all (the input data is simply copied a block at a time).
+   Z_DEFAULT_COMPRESSION requests a default compromise between speed and
+   compression (currently equivalent to level 6).
+
+     deflateInit returns Z_OK if success, Z_MEM_ERROR if there was not
+   enough memory, Z_STREAM_ERROR if level is not a valid compression level,
+   Z_VERSION_ERROR if the zlib library version (zlib_version) is incompatible
+   with the version assumed by the caller (ZLIB_VERSION).
+   msg is set to null if there is no error message.  deflateInit does not
+   perform any compression: this will be done by deflate().
+*/
+
+
+ZEXTERN int ZEXPORT deflate OF((z_streamp strm, int flush));
+/*
+    deflate compresses as much data as possible, and stops when the input
+  buffer becomes empty or the output buffer becomes full. It may introduce some
+  output latency (reading input without producing any output) except when
+  forced to flush.
+
+    The detailed semantics are as follows. deflate performs one or both of the
+  following actions:
+
+  - Compress more input starting at next_in and update next_in and avail_in
+    accordingly. If not all input can be processed (because there is not
+    enough room in the output buffer), next_in and avail_in are updated and
+    processing will resume at this point for the next call of deflate().
+
+  - Provide more output starting at next_out and update next_out and avail_out
+    accordingly. This action is forced if the parameter flush is non zero.
+    Forcing flush frequently degrades the compression ratio, so this parameter
+    should be set only when necessary (in interactive applications).
+    Some output may be provided even if flush is not set.
+
+  Before the call of deflate(), the application should ensure that at least
+  one of the actions is possible, by providing more input and/or consuming
+  more output, and updating avail_in or avail_out accordingly; avail_out
+  should never be zero before the call. The application can consume the
+  compressed output when it wants, for example when the output buffer is full
+  (avail_out == 0), or after each call of deflate(). If deflate returns Z_OK
+  and with zero avail_out, it must be called again after making room in the
+  output buffer because there might be more output pending.
+
+    If the parameter flush is set to Z_SYNC_FLUSH, all pending output is
+  flushed to the output buffer and the output is aligned on a byte boundary, so
+  that the decompressor can get all input data available so far. (In particular
+  avail_in is zero after the call if enough output space has been provided
+  before the call.)  Flushing may degrade compression for some compression
+  algorithms and so it should be used only when necessary.
+
+    If flush is set to Z_FULL_FLUSH, all output is flushed as with
+  Z_SYNC_FLUSH, and the compression state is reset so that decompression can
+  restart from this point if previous compressed data has been damaged or if
+  random access is desired. Using Z_FULL_FLUSH too often can seriously degrade
+  the compression.
+
+    If deflate returns with avail_out == 0, this function must be called again
+  with the same value of the flush parameter and more output space (updated
+  avail_out), until the flush is complete (deflate returns with non-zero
+  avail_out).
+
+    If the parameter flush is set to Z_FINISH, pending input is processed,
+  pending output is flushed and deflate returns with Z_STREAM_END if there
+  was enough output space; if deflate returns with Z_OK, this function must be
+  called again with Z_FINISH and more output space (updated avail_out) but no
+  more input data, until it returns with Z_STREAM_END or an error. After
+  deflate has returned Z_STREAM_END, the only possible operations on the
+  stream are deflateReset or deflateEnd.
+  
+    Z_FINISH can be used immediately after deflateInit if all the compression
+  is to be done in a single step. In this case, avail_out must be at least
+  0.1% larger than avail_in plus 12 bytes.  If deflate does not return
+  Z_STREAM_END, then it must be called again as described above.
+
+    deflate() sets strm->adler to the adler32 checksum of all input read
+  so far (that is, total_in bytes).
+
+    deflate() may update data_type if it can make a good guess about
+  the input data type (Z_ASCII or Z_BINARY). In doubt, the data is considered
+  binary. This field is only for information purposes and does not affect
+  the compression algorithm in any manner.
+
+    deflate() returns Z_OK if some progress has been made (more input
+  processed or more output produced), Z_STREAM_END if all input has been
+  consumed and all output has been produced (only when flush is set to
+  Z_FINISH), Z_STREAM_ERROR if the stream state was inconsistent (for example
+  if next_in or next_out was NULL), Z_BUF_ERROR if no progress is possible
+  (for example avail_in or avail_out was zero).
+*/
+
+
+ZEXTERN int ZEXPORT deflateEnd OF((z_streamp strm));
+/*
+     All dynamically allocated data structures for this stream are freed.
+   This function discards any unprocessed input and does not flush any
+   pending output.
+
+     deflateEnd returns Z_OK if success, Z_STREAM_ERROR if the
+   stream state was inconsistent, Z_DATA_ERROR if the stream was freed
+   prematurely (some input or output was discarded). In the error case,
+   msg may be set but then points to a static string (which must not be
+   deallocated).
+*/
+
+
+/* 
+ZEXTERN int ZEXPORT inflateInit OF((z_streamp strm));
+
+     Initializes the internal stream state for decompression. The fields
+   next_in, avail_in, zalloc, zfree and opaque must be initialized before by
+   the caller. If next_in is not Z_NULL and avail_in is large enough (the exact
+   value depends on the compression method), inflateInit determines the
+   compression method from the zlib header and allocates all data structures
+   accordingly; otherwise the allocation will be deferred to the first call of
+   inflate.  If zalloc and zfree are set to Z_NULL, inflateInit updates them to
+   use default allocation functions.
+
+     inflateInit returns Z_OK if success, Z_MEM_ERROR if there was not enough
+   memory, Z_VERSION_ERROR if the zlib library version is incompatible with the
+   version assumed by the caller.  msg is set to null if there is no error
+   message. inflateInit does not perform any decompression apart from reading
+   the zlib header if present: this will be done by inflate().  (So next_in and
+   avail_in may be modified, but next_out and avail_out are unchanged.)
+*/
+
+
+ZEXTERN int ZEXPORT inflate OF((z_streamp strm, int flush));
+/*
+    inflate decompresses as much data as possible, and stops when the input
+  buffer becomes empty or the output buffer becomes full. It may some
+  introduce some output latency (reading input without producing any output)
+  except when forced to flush.
+
+  The detailed semantics are as follows. inflate performs one or both of the
+  following actions:
+
+  - Decompress more input starting at next_in and update next_in and avail_in
+    accordingly. If not all input can be processed (because there is not
+    enough room in the output buffer), next_in is updated and processing
+    will resume at this point for the next call of inflate().
+
+  - Provide more output starting at next_out and update next_out and avail_out
+    accordingly.  inflate() provides as much output as possible, until there
+    is no more input data or no more space in the output buffer (see below
+    about the flush parameter).
+
+  Before the call of inflate(), the application should ensure that at least
+  one of the actions is possible, by providing more input and/or consuming
+  more output, and updating the next_* and avail_* values accordingly.
+  The application can consume the uncompressed output when it wants, for
+  example when the output buffer is full (avail_out == 0), or after each
+  call of inflate(). If inflate returns Z_OK and with zero avail_out, it
+  must be called again after making room in the output buffer because there
+  might be more output pending.
+
+    If the parameter flush is set to Z_SYNC_FLUSH, inflate flushes as much
+  output as possible to the output buffer. The flushing behavior of inflate is
+  not specified for values of the flush parameter other than Z_SYNC_FLUSH
+  and Z_FINISH, but the current implementation actually flushes as much output
+  as possible anyway.
+
+    inflate() should normally be called until it returns Z_STREAM_END or an
+  error. However if all decompression is to be performed in a single step
+  (a single call of inflate), the parameter flush should be set to
+  Z_FINISH. In this case all pending input is processed and all pending
+  output is flushed; avail_out must be large enough to hold all the
+  uncompressed data. (The size of the uncompressed data may have been saved
+  by the compressor for this purpose.) The next operation on this stream must
+  be inflateEnd to deallocate the decompression state. The use of Z_FINISH
+  is never required, but can be used to inform inflate that a faster routine
+  may be used for the single inflate() call.
+
+     If a preset dictionary is needed at this point (see inflateSetDictionary
+  below), inflate sets strm-adler to the adler32 checksum of the
+  dictionary chosen by the compressor and returns Z_NEED_DICT; otherwise 
+  it sets strm->adler to the adler32 checksum of all output produced
+  so far (that is, total_out bytes) and returns Z_OK, Z_STREAM_END or
+  an error code as described below. At the end of the stream, inflate()
+  checks that its computed adler32 checksum is equal to that saved by the
+  compressor and returns Z_STREAM_END only if the checksum is correct.
+
+    inflate() returns Z_OK if some progress has been made (more input processed
+  or more output produced), Z_STREAM_END if the end of the compressed data has
+  been reached and all uncompressed output has been produced, Z_NEED_DICT if a
+  preset dictionary is needed at this point, Z_DATA_ERROR if the input data was
+  corrupted (input stream not conforming to the zlib format or incorrect
+  adler32 checksum), Z_STREAM_ERROR if the stream structure was inconsistent
+  (for example if next_in or next_out was NULL), Z_MEM_ERROR if there was not
+  enough memory, Z_BUF_ERROR if no progress is possible or if there was not
+  enough room in the output buffer when Z_FINISH is used. In the Z_DATA_ERROR
+  case, the application may then call inflateSync to look for a good
+  compression block.
+*/
+
+
+ZEXTERN int ZEXPORT inflateEnd OF((z_streamp strm));
+/*
+     All dynamically allocated data structures for this stream are freed.
+   This function discards any unprocessed input and does not flush any
+   pending output.
+
+     inflateEnd returns Z_OK if success, Z_STREAM_ERROR if the stream state
+   was inconsistent. In the error case, msg may be set but then points to a
+   static string (which must not be deallocated).
+*/
+
+                        /* Advanced functions */
+
+/*
+    The following functions are needed only in some special applications.
+*/
+
+/*   
+ZEXTERN int ZEXPORT deflateInit2 OF((z_streamp strm,
+                                     int  level,
+                                     int  method,
+                                     int  windowBits,
+                                     int  memLevel,
+                                     int  strategy));
+
+     This is another version of deflateInit with more compression options. The
+   fields next_in, zalloc, zfree and opaque must be initialized before by
+   the caller.
+
+     The method parameter is the compression method. It must be Z_DEFLATED in
+   this version of the library.
+
+     The windowBits parameter is the base two logarithm of the window size
+   (the size of the history buffer).  It should be in the range 8..15 for this
+   version of the library. Larger values of this parameter result in better
+   compression at the expense of memory usage. The default value is 15 if
+   deflateInit is used instead.
+
+     The memLevel parameter specifies how much memory should be allocated
+   for the internal compression state. memLevel=1 uses minimum memory but
+   is slow and reduces compression ratio; memLevel=9 uses maximum memory
+   for optimal speed. The default value is 8. See zconf.h for total memory
+   usage as a function of windowBits and memLevel.
+
+     The strategy parameter is used to tune the compression algorithm. Use the
+   value Z_DEFAULT_STRATEGY for normal data, Z_FILTERED for data produced by a
+   filter (or predictor), or Z_HUFFMAN_ONLY to force Huffman encoding only (no
+   string match).  Filtered data consists mostly of small values with a
+   somewhat random distribution. In this case, the compression algorithm is
+   tuned to compress them better. The effect of Z_FILTERED is to force more
+   Huffman coding and less string matching; it is somewhat intermediate
+   between Z_DEFAULT and Z_HUFFMAN_ONLY. The strategy parameter only affects
+   the compression ratio but not the correctness of the compressed output even
+   if it is not set appropriately.
+
+      deflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
+   memory, Z_STREAM_ERROR if a parameter is invalid (such as an invalid
+   method). msg is set to null if there is no error message.  deflateInit2 does
+   not perform any compression: this will be done by deflate().
+*/
+                            
+ZEXTERN int ZEXPORT deflateSetDictionary OF((z_streamp strm,
+                                             const Bytef *dictionary,
+                                             uInt  dictLength));
+/*
+     Initializes the compression dictionary from the given byte sequence
+   without producing any compressed output. This function must be called
+   immediately after deflateInit, deflateInit2 or deflateReset, before any
+   call of deflate. The compressor and decompressor must use exactly the same
+   dictionary (see inflateSetDictionary).
+
+     The dictionary should consist of strings (byte sequences) that are likely
+   to be encountered later in the data to be compressed, with the most commonly
+   used strings preferably put towards the end of the dictionary. Using a
+   dictionary is most useful when the data to be compressed is short and can be
+   predicted with good accuracy; the data can then be compressed better than
+   with the default empty dictionary.
+
+     Depending on the size of the compression data structures selected by
+   deflateInit or deflateInit2, a part of the dictionary may in effect be
+   discarded, for example if the dictionary is larger than the window size in
+   deflate or deflate2. Thus the strings most likely to be useful should be
+   put at the end of the dictionary, not at the front.
+
+     Upon return of this function, strm->adler is set to the Adler32 value
+   of the dictionary; the decompressor may later use this value to determine
+   which dictionary has been used by the compressor. (The Adler32 value
+   applies to the whole dictionary even if only a subset of the dictionary is
+   actually used by the compressor.)
+
+     deflateSetDictionary returns Z_OK if success, or Z_STREAM_ERROR if a
+   parameter is invalid (such as NULL dictionary) or the stream state is
+   inconsistent (for example if deflate has already been called for this stream
+   or if the compression method is bsort). deflateSetDictionary does not
+   perform any compression: this will be done by deflate().
+*/
+
+ZEXTERN int ZEXPORT deflateCopy OF((z_streamp dest,
+                                    z_streamp source));
+/*
+     Sets the destination stream as a complete copy of the source stream.
+
+     This function can be useful when several compression strategies will be
+   tried, for example when there are several ways of pre-processing the input
+   data with a filter. The streams that will be discarded should then be freed
+   by calling deflateEnd.  Note that deflateCopy duplicates the internal
+   compression state which can be quite large, so this strategy is slow and
+   can consume lots of memory.
+
+     deflateCopy returns Z_OK if success, Z_MEM_ERROR if there was not
+   enough memory, Z_STREAM_ERROR if the source stream state was inconsistent
+   (such as zalloc being NULL). msg is left unchanged in both source and
+   destination.
+*/
+
+ZEXTERN int ZEXPORT deflateReset OF((z_streamp strm));
+/*
+     This function is equivalent to deflateEnd followed by deflateInit,
+   but does not free and reallocate all the internal compression state.
+   The stream will keep the same compression level and any other attributes
+   that may have been set by deflateInit2.
+
+      deflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source
+   stream state was inconsistent (such as zalloc or state being NULL).
+*/
+
+ZEXTERN int ZEXPORT deflateParams OF((z_streamp strm,
+                                     int level,
+                                     int strategy));
+/*
+     Dynamically update the compression level and compression strategy.  The
+   interpretation of level and strategy is as in deflateInit2.  This can be
+   used to switch between compression and straight copy of the input data, or
+   to switch to a different kind of input data requiring a different
+   strategy. If the compression level is changed, the input available so far
+   is compressed with the old level (and may be flushed); the new level will
+   take effect only at the next call of deflate().
+
+     Before the call of deflateParams, the stream state must be set as for
+   a call of deflate(), since the currently available input may have to
+   be compressed and flushed. In particular, strm->avail_out must be non-zero.
+
+     deflateParams returns Z_OK if success, Z_STREAM_ERROR if the source
+   stream state was inconsistent or if a parameter was invalid, Z_BUF_ERROR
+   if strm->avail_out was zero.
+*/
+
+/*   
+ZEXTERN int ZEXPORT inflateInit2 OF((z_streamp strm,
+                                     int  windowBits));
+
+     This is another version of inflateInit with an extra parameter. The
+   fields next_in, avail_in, zalloc, zfree and opaque must be initialized
+   before by the caller.
+
+     The windowBits parameter is the base two logarithm of the maximum window
+   size (the size of the history buffer).  It should be in the range 8..15 for
+   this version of the library. The default value is 15 if inflateInit is used
+   instead. If a compressed stream with a larger window size is given as
+   input, inflate() will return with the error code Z_DATA_ERROR instead of
+   trying to allocate a larger window.
+
+      inflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
+   memory, Z_STREAM_ERROR if a parameter is invalid (such as a negative
+   memLevel). msg is set to null if there is no error message.  inflateInit2
+   does not perform any decompression apart from reading the zlib header if
+   present: this will be done by inflate(). (So next_in and avail_in may be
+   modified, but next_out and avail_out are unchanged.)
+*/
+
+ZEXTERN int ZEXPORT inflateSetDictionary OF((z_streamp strm,
+                                             const Bytef *dictionary,
+                                             uInt  dictLength));
+/*
+     Initializes the decompression dictionary from the given uncompressed byte
+   sequence. This function must be called immediately after a call of inflate
+   if this call returned Z_NEED_DICT. The dictionary chosen by the compressor
+   can be determined from the Adler32 value returned by this call of
+   inflate. The compressor and decompressor must use exactly the same
+   dictionary (see deflateSetDictionary).
+
+     inflateSetDictionary returns Z_OK if success, Z_STREAM_ERROR if a
+   parameter is invalid (such as NULL dictionary) or the stream state is
+   inconsistent, Z_DATA_ERROR if the given dictionary doesn't match the
+   expected one (incorrect Adler32 value). inflateSetDictionary does not
+   perform any decompression: this will be done by subsequent calls of
+   inflate().
+*/
+
+ZEXTERN int ZEXPORT inflateSync OF((z_streamp strm));
+/* 
+    Skips invalid compressed data until a full flush point (see above the
+  description of deflate with Z_FULL_FLUSH) can be found, or until all
+  available input is skipped. No output is provided.
+
+    inflateSync returns Z_OK if a full flush point has been found, Z_BUF_ERROR
+  if no more input was provided, Z_DATA_ERROR if no flush point has been found,
+  or Z_STREAM_ERROR if the stream structure was inconsistent. In the success
+  case, the application may save the current current value of total_in which
+  indicates where valid compressed data was found. In the error case, the
+  application may repeatedly call inflateSync, providing more input each time,
+  until success or end of the input data.
+*/
+
+ZEXTERN int ZEXPORT inflateReset OF((z_streamp strm));
+/*
+     This function is equivalent to inflateEnd followed by inflateInit,
+   but does not free and reallocate all the internal decompression state.
+   The stream will keep attributes that may have been set by inflateInit2.
+
+      inflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source
+   stream state was inconsistent (such as zalloc or state being NULL).
+*/
+
+
+                        /* utility functions */
+
+/*
+     The following utility functions are implemented on top of the
+   basic stream-oriented functions. To simplify the interface, some
+   default options are assumed (compression level and memory usage,
+   standard memory allocation functions). The source code of these
+   utility functions can easily be modified if you need special options.
+*/
+
+ZEXTERN int ZEXPORT compress OF((Bytef *dest,   uLongf *destLen,
+                                 const Bytef *source, uLong sourceLen));
+/*
+     Compresses the source buffer into the destination buffer.  sourceLen is
+   the byte length of the source buffer. Upon entry, destLen is the total
+   size of the destination buffer, which must be at least 0.1% larger than
+   sourceLen plus 12 bytes. Upon exit, destLen is the actual size of the
+   compressed buffer.
+     This function can be used to compress a whole file at once if the
+   input file is mmap'ed.
+     compress returns Z_OK if success, Z_MEM_ERROR if there was not
+   enough memory, Z_BUF_ERROR if there was not enough room in the output
+   buffer.
+*/
+
+ZEXTERN int ZEXPORT compress2 OF((Bytef *dest,   uLongf *destLen,
+                                  const Bytef *source, uLong sourceLen,
+                                  int level));
+/*
+     Compresses the source buffer into the destination buffer. The level
+   parameter has the same meaning as in deflateInit.  sourceLen is the byte
+   length of the source buffer. Upon entry, destLen is the total size of the
+   destination buffer, which must be at least 0.1% larger than sourceLen plus
+   12 bytes. Upon exit, destLen is the actual size of the compressed buffer.
+
+     compress2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
+   memory, Z_BUF_ERROR if there was not enough room in the output buffer,
+   Z_STREAM_ERROR if the level parameter is invalid.
+*/
+
+ZEXTERN int ZEXPORT uncompress OF((Bytef *dest,   uLongf *destLen,
+                                   const Bytef *source, uLong sourceLen));
+/*
+     Decompresses the source buffer into the destination buffer.  sourceLen is
+   the byte length of the source buffer. Upon entry, destLen is the total
+   size of the destination buffer, which must be large enough to hold the
+   entire uncompressed data. (The size of the uncompressed data must have
+   been saved previously by the compressor and transmitted to the decompressor
+   by some mechanism outside the scope of this compression library.)
+   Upon exit, destLen is the actual size of the compressed buffer.
+     This function can be used to decompress a whole file at once if the
+   input file is mmap'ed.
+
+     uncompress returns Z_OK if success, Z_MEM_ERROR if there was not
+   enough memory, Z_BUF_ERROR if there was not enough room in the output
+   buffer, or Z_DATA_ERROR if the input data was corrupted.
+*/
+
+
+typedef voidp gzFile;
+
+ZEXTERN gzFile ZEXPORT gzopen  OF((const char *path, const char *mode));
+/*
+     Opens a gzip (.gz) file for reading or writing. The mode parameter
+   is as in fopen ("rb" or "wb") but can also include a compression level
+   ("wb9") or a strategy: 'f' for filtered data as in "wb6f", 'h' for
+   Huffman only compression as in "wb1h". (See the description
+   of deflateInit2 for more information about the strategy parameter.)
+
+     gzopen can be used to read a file which is not in gzip format; in this
+   case gzread will directly read from the file without decompression.
+
+     gzopen returns NULL if the file could not be opened or if there was
+   insufficient memory to allocate the (de)compression state; errno
+   can be checked to distinguish the two cases (if errno is zero, the
+   zlib error is Z_MEM_ERROR).  */
+
+ZEXTERN gzFile ZEXPORT gzdopen  OF((int fd, const char *mode));
+/*
+     gzdopen() associates a gzFile with the file descriptor fd.  File
+   descriptors are obtained from calls like open, dup, creat, pipe or
+   fileno (in the file has been previously opened with fopen).
+   The mode parameter is as in gzopen.
+     The next call of gzclose on the returned gzFile will also close the
+   file descriptor fd, just like fclose(fdopen(fd), mode) closes the file
+   descriptor fd. If you want to keep fd open, use gzdopen(dup(fd), mode).
+     gzdopen returns NULL if there was insufficient memory to allocate
+   the (de)compression state.
+*/
+
+ZEXTERN int ZEXPORT gzsetparams OF((gzFile file, int level, int strategy));
+/*
+     Dynamically update the compression level or strategy. See the description
+   of deflateInit2 for the meaning of these parameters.
+     gzsetparams returns Z_OK if success, or Z_STREAM_ERROR if the file was not
+   opened for writing.
+*/
+
+ZEXTERN int ZEXPORT    gzread  OF((gzFile file, voidp buf, unsigned len));
+/*
+     Reads the given number of uncompressed bytes from the compressed file.
+   If the input file was not in gzip format, gzread copies the given number
+   of bytes into the buffer.
+     gzread returns the number of uncompressed bytes actually read (0 for
+   end of file, -1 for error). */
+
+ZEXTERN int ZEXPORT    gzwrite OF((gzFile file, 
+                                  const voidp buf, unsigned len));
+/*
+     Writes the given number of uncompressed bytes into the compressed file.
+   gzwrite returns the number of uncompressed bytes actually written
+   (0 in case of error).
+*/
+
+ZEXTERN int ZEXPORTVA   gzprintf OF((gzFile file, const char *format, ...));
+/*
+     Converts, formats, and writes the args to the compressed file under
+   control of the format string, as in fprintf. gzprintf returns the number of
+   uncompressed bytes actually written (0 in case of error).
+*/
+
+ZEXTERN int ZEXPORT gzputs OF((gzFile file, const char *s));
+/*
+      Writes the given null-terminated string to the compressed file, excluding
+   the terminating null character.
+      gzputs returns the number of characters written, or -1 in case of error.
+*/
+
+ZEXTERN char * ZEXPORT gzgets OF((gzFile file, char *buf, int len));
+/*
+      Reads bytes from the compressed file until len-1 characters are read, or
+   a newline character is read and transferred to buf, or an end-of-file
+   condition is encountered.  The string is then terminated with a null
+   character.
+      gzgets returns buf, or Z_NULL in case of error.
+*/
+
+ZEXTERN int ZEXPORT    gzputc OF((gzFile file, int c));
+/*
+      Writes c, converted to an unsigned char, into the compressed file.
+   gzputc returns the value that was written, or -1 in case of error.
+*/
+
+ZEXTERN int ZEXPORT    gzgetc OF((gzFile file));
+/*
+      Reads one byte from the compressed file. gzgetc returns this byte
+   or -1 in case of end of file or error.
+*/
+
+ZEXTERN int ZEXPORT    gzflush OF((gzFile file, int flush));
+/*
+     Flushes all pending output into the compressed file. The parameter
+   flush is as in the deflate() function. The return value is the zlib
+   error number (see function gzerror below). gzflush returns Z_OK if
+   the flush parameter is Z_FINISH and all output could be flushed.
+     gzflush should be called only when strictly necessary because it can
+   degrade compression.
+*/
+
+ZEXTERN z_off_t ZEXPORT    gzseek OF((gzFile file,
+                                     z_off_t offset, int whence));
+/* 
+      Sets the starting position for the next gzread or gzwrite on the
+   given compressed file. The offset represents a number of bytes in the
+   uncompressed data stream. The whence parameter is defined as in lseek(2);
+   the value SEEK_END is not supported.
+     If the file is opened for reading, this function is emulated but can be
+   extremely slow. If the file is opened for writing, only forward seeks are
+   supported; gzseek then compresses a sequence of zeroes up to the new
+   starting position.
+
+      gzseek returns the resulting offset location as measured in bytes from
+   the beginning of the uncompressed stream, or -1 in case of error, in
+   particular if the file is opened for writing and the new starting position
+   would be before the current position.
+*/
+
+ZEXTERN int ZEXPORT    gzrewind OF((gzFile file));
+/*
+     Rewinds the given file. This function is supported only for reading.
+
+   gzrewind(file) is equivalent to (int)gzseek(file, 0L, SEEK_SET)
+*/
+
+ZEXTERN z_off_t ZEXPORT    gztell OF((gzFile file));
+/*
+     Returns the starting position for the next gzread or gzwrite on the
+   given compressed file. This position represents a number of bytes in the
+   uncompressed data stream.
+
+   gztell(file) is equivalent to gzseek(file, 0L, SEEK_CUR)
+*/
+
+ZEXTERN int ZEXPORT gzeof OF((gzFile file));
+/*
+     Returns 1 when EOF has previously been detected reading the given
+   input stream, otherwise zero.
+*/
+
+ZEXTERN int ZEXPORT    gzclose OF((gzFile file));
+/*
+     Flushes all pending output if necessary, closes the compressed file
+   and deallocates all the (de)compression state. The return value is the zlib
+   error number (see function gzerror below).
+*/
+
+ZEXTERN const char * ZEXPORT gzerror OF((gzFile file, int *errnum));
+/*
+     Returns the error message for the last error which occurred on the
+   given compressed file. errnum is set to zlib error number. If an
+   error occurred in the file system and not in the compression library,
+   errnum is set to Z_ERRNO and the application may consult errno
+   to get the exact error code.
+*/
+
+                        /* checksum functions */
+
+/*
+     These functions are not related to compression but are exported
+   anyway because they might be useful in applications using the
+   compression library.
+*/
+
+ZEXTERN uLong ZEXPORT adler32 OF((uLong adler, const Bytef *buf, uInt len));
+
+/*
+     Update a running Adler-32 checksum with the bytes buf[0..len-1] and
+   return the updated checksum. If buf is NULL, this function returns
+   the required initial value for the checksum.
+   An Adler-32 checksum is almost as reliable as a CRC32 but can be computed
+   much faster. Usage example:
+
+     uLong adler = adler32(0L, Z_NULL, 0);
+
+     while (read_buffer(buffer, length) != EOF) {
+       adler = adler32(adler, buffer, length);
+     }
+     if (adler != original_adler) error();
+*/
+
+ZEXTERN uLong ZEXPORT crc32   OF((uLong crc, const Bytef *buf, uInt len));
+/*
+     Update a running crc with the bytes buf[0..len-1] and return the updated
+   crc. If buf is NULL, this function returns the required initial value
+   for the crc. Pre- and post-conditioning (one's complement) is performed
+   within this function so it shouldn't be done by the application.
+   Usage example:
+
+     uLong crc = crc32(0L, Z_NULL, 0);
+
+     while (read_buffer(buffer, length) != EOF) {
+       crc = crc32(crc, buffer, length);
+     }
+     if (crc != original_crc) error();
+*/
+
+
+                        /* various hacks, don't look :) */
+
+/* deflateInit and inflateInit are macros to allow checking the zlib version
+ * and the compiler's view of z_stream:
+ */
+ZEXTERN int ZEXPORT deflateInit_ OF((z_streamp strm, int level,
+                                     const char *version, int stream_size));
+ZEXTERN int ZEXPORT inflateInit_ OF((z_streamp strm,
+                                     const char *version, int stream_size));
+ZEXTERN int ZEXPORT deflateInit2_ OF((z_streamp strm, int  level, int  method,
+                                      int windowBits, int memLevel,
+                                      int strategy, const char *version,
+                                      int stream_size));
+ZEXTERN int ZEXPORT inflateInit2_ OF((z_streamp strm, int  windowBits,
+                                      const char *version, int stream_size));
+#define deflateInit(strm, level) \
+        deflateInit_((strm), (level),       ZLIB_VERSION, sizeof(z_stream))
+#define inflateInit(strm) \
+        inflateInit_((strm),                ZLIB_VERSION, sizeof(z_stream))
+#define deflateInit2(strm, level, method, windowBits, memLevel, strategy) \
+        deflateInit2_((strm),(level),(method),(windowBits),(memLevel),\
+                      (strategy),           ZLIB_VERSION, sizeof(z_stream))
+#define inflateInit2(strm, windowBits) \
+        inflateInit2_((strm), (windowBits), ZLIB_VERSION, sizeof(z_stream))
+
+
+#if !defined(_Z_UTIL_H) && !defined(NO_DUMMY_DECL)
+    struct internal_state {int dummy;}; /* hack for buggy compilers */
+#endif
+
+ZEXTERN const char   * ZEXPORT zError           OF((int err));
+ZEXTERN int            ZEXPORT inflateSyncPoint OF((z_streamp z));
+ZEXTERN const uLongf * ZEXPORT get_crc_table    OF((void));
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _ZLIB_H */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/include/zlib/zutil.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,225 @@
+/* zutil.h -- internal interface and configuration of the compression library
+ * Copyright (C) 1995-2002 Jean-loup Gailly.
+ * For conditions of distribution and use, see copyright notice in zlib.h
+ */
+
+/* WARNING: this file should *not* be used by applications. It is
+   part of the implementation of the compression library and is
+   subject to change. Applications should only use zlib.h.
+ */
+
+/* @(#) $Id: zutil.h,v 1.4 2002-04-24 07:36:48 mcr Exp $ */
+
+#ifndef _Z_UTIL_H
+#define _Z_UTIL_H
+
+#include "zlib.h"
+
+#include <linux/string.h>
+#define HAVE_MEMCPY
+
+#if 0 // #ifdef STDC
+#  include <stddef.h>
+#  include <string.h>
+#  include <stdlib.h>
+#endif
+#ifndef __KERNEL__
+#ifdef NO_ERRNO_H
+    extern int errno;
+#else
+#   include <errno.h>
+#endif
+#endif
+
+#ifndef local
+#  define local static
+#endif
+/* compile with -Dlocal if your debugger can't find static symbols */
+
+typedef unsigned char  uch;
+typedef uch FAR uchf;
+typedef unsigned short ush;
+typedef ush FAR ushf;
+typedef unsigned long  ulg;
+
+extern const char *z_errmsg[10]; /* indexed by 2-zlib_error */
+/* (size given to avoid silly warnings with Visual C++) */
+
+#define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
+
+#define ERR_RETURN(strm,err) \
+  return (strm->msg = ERR_MSG(err), (err))
+/* To be used only when the state is known to be valid */
+
+        /* common constants */
+
+#ifndef DEF_WBITS
+#  define DEF_WBITS MAX_WBITS
+#endif
+/* default windowBits for decompression. MAX_WBITS is for compression only */
+
+#if MAX_MEM_LEVEL >= 8
+#  define DEF_MEM_LEVEL 8
+#else
+#  define DEF_MEM_LEVEL  MAX_MEM_LEVEL
+#endif
+/* default memLevel */
+
+#define STORED_BLOCK 0
+#define STATIC_TREES 1
+#define DYN_TREES    2
+/* The three kinds of block type */
+
+#define MIN_MATCH  3
+#define MAX_MATCH  258
+/* The minimum and maximum match lengths */
+
+#define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
+
+        /* target dependencies */
+
+#ifdef MSDOS
+#  define OS_CODE  0x00
+#  if defined(__TURBOC__) || defined(__BORLANDC__)
+#    if(__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
+       /* Allow compilation with ANSI keywords only enabled */
+       void _Cdecl farfree( void *block );
+       void *_Cdecl farmalloc( unsigned long nbytes );
+#    else
+#     include <alloc.h>
+#    endif
+#  else /* MSC or DJGPP */
+#    include <malloc.h>
+#  endif
+#endif
+
+#ifdef OS2
+#  define OS_CODE  0x06
+#endif
+
+#ifdef WIN32 /* Window 95 & Windows NT */
+#  define OS_CODE  0x0b
+#endif
+
+#if defined(VAXC) || defined(VMS)
+#  define OS_CODE  0x02
+#  define F_OPEN(name, mode) \
+     fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
+#endif
+
+#ifdef AMIGA
+#  define OS_CODE  0x01
+#endif
+
+#if defined(ATARI) || defined(atarist)
+#  define OS_CODE  0x05
+#endif
+
+#if defined(MACOS) || defined(TARGET_OS_MAC)
+#  define OS_CODE  0x07
+#  if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
+#    include <unix.h> /* for fdopen */
+#  else
+#    ifndef fdopen
+#      define fdopen(fd,mode) NULL /* No fdopen() */
+#    endif
+#  endif
+#endif
+
+#ifdef __50SERIES /* Prime/PRIMOS */
+#  define OS_CODE  0x0F
+#endif
+
+#ifdef TOPS20
+#  define OS_CODE  0x0a
+#endif
+
+#if defined(_BEOS_) || defined(RISCOS)
+#  define fdopen(fd,mode) NULL /* No fdopen() */
+#endif
+
+#if (defined(_MSC_VER) && (_MSC_VER > 600))
+#  define fdopen(fd,type)  _fdopen(fd,type)
+#endif
+
+
+        /* Common defaults */
+
+#ifndef OS_CODE
+#  define OS_CODE  0x03  /* assume Unix */
+#endif
+
+#ifndef F_OPEN
+#  define F_OPEN(name, mode) fopen((name), (mode))
+#endif
+
+         /* functions */
+
+#ifdef HAVE_STRERROR
+   extern char *strerror OF((int));
+#  define zstrerror(errnum) strerror(errnum)
+#else
+#  define zstrerror(errnum) ""
+#endif
+
+#if defined(pyr)
+#  define NO_MEMCPY
+#endif
+#if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
+ /* Use our own functions for small and medium model with MSC <= 5.0.
+  * You may have to use the same strategy for Borland C (untested).
+  * The __SC__ check is for Symantec.
+  */
+#  define NO_MEMCPY
+#endif
+#if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
+#  define HAVE_MEMCPY
+#endif
+#ifdef HAVE_MEMCPY
+#  ifdef SMALL_MEDIUM /* MSDOS small or medium model */
+#    define zmemcpy _fmemcpy
+#    define zmemcmp _fmemcmp
+#    define zmemzero(dest, len) _fmemset(dest, 0, len)
+#  else
+#    define zmemcpy memcpy
+#    define zmemcmp memcmp
+#    define zmemzero(dest, len) memset(dest, 0, len)
+#  endif
+#else
+   extern void zmemcpy  OF((Bytef* dest, const Bytef* source, uInt len));
+   extern int  zmemcmp  OF((const Bytef* s1, const Bytef* s2, uInt len));
+   extern void zmemzero OF((Bytef* dest, uInt len));
+#endif
+
+/* Diagnostic functions */
+#ifdef DEBUG
+#  include <stdio.h>
+   extern int z_verbose;
+   extern void z_error    OF((char *m));
+#  define Assert(cond,msg) {if(!(cond)) z_error(msg);}
+#  define Trace(x) {if (z_verbose>=0) fprintf x ;}
+#  define Tracev(x) {if (z_verbose>0) fprintf x ;}
+#  define Tracevv(x) {if (z_verbose>1) fprintf x ;}
+#  define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
+#  define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
+#else
+#  define Assert(cond,msg)
+#  define Trace(x)
+#  define Tracev(x)
+#  define Tracevv(x)
+#  define Tracec(c,x)
+#  define Tracecv(c,x)
+#endif
+
+
+typedef uLong (ZEXPORT *check_func) OF((uLong check, const Bytef *buf,
+                                      uInt len));
+voidpf zcalloc OF((voidpf opaque, unsigned items, unsigned size));
+void   zcfree  OF((voidpf opaque, voidpf ptr));
+
+#define ZALLOC(strm, items, size) \
+           (*((strm)->zalloc))((strm)->opaque, (items), (size))
+#define ZFREE(strm, addr)  (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
+#define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
+
+#endif /* _Z_UTIL_H */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/lib/libfreeswan/Makefile.objs     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,21 @@
+obj-y += satot.o
+obj-y += addrtot.o
+obj-y += ultot.o 
+obj-y += addrtypeof.o
+obj-y += anyaddr.o
+obj-y += initaddr.o
+obj-y += ultoa.o 
+obj-y += addrtoa.o 
+obj-y += subnettoa.o 
+obj-y += subnetof.o 
+obj-y += goodmask.o 
+obj-y += datatot.o 
+obj-y += rangetoa.o 
+obj-y += prng.o 
+obj-y += pfkey_v2_parse.o 
+obj-y += pfkey_v2_build.o 
+obj-y += pfkey_v2_debug.o 
+obj-y += pfkey_v2_ext_bits.o 
+
+#version.c:    ${LIBFREESWANDIR}/version.in.c ${OPENSWANSRCDIR}/Makefile.ver
+#      sed '/"/s/xxx/$(IPSECVERSION)/' ${LIBFREESWANDIR}/version.in.c >$@
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/lib/zlib/Makefile     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,118 @@
+# (kernel) Makefile for IPCOMP zlib deflate code
+# Copyright (C) 1998, 1999, 2000, 2001  Richard Guy Briggs.
+# Copyright (C) 2000  Svenning Soerensen
+# 
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the
+# Free Software Foundation; either version 2 of the License, or (at your
+# option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+# for more details.
+#
+# RCSID $Id: Makefile,v 1.9 2002-04-24 07:55:32 mcr Exp $
+#
+
+
+
+include ../Makefile.inc
+
+
+
+ifndef TOPDIR
+TOPDIR  := /usr/src/linux
+endif
+
+
+L_TARGET := zlib.a
+
+obj-y :=
+
+include Makefile.objs
+
+EXTRA_CFLAGS += $(KLIPSCOMPILE)
+
+EXTRA_CFLAGS += -Wall 
+#EXTRA_CFLAGS += -Wconversion 
+#EXTRA_CFLAGS += -Wmissing-prototypes 
+EXTRA_CFLAGS += -Wpointer-arith 
+#EXTRA_CFLAGS += -Wcast-qual 
+#EXTRA_CFLAGS += -Wmissing-declarations 
+EXTRA_CFLAGS += -Wstrict-prototypes
+#EXTRA_CFLAGS += -pedantic
+#EXTRA_CFLAGS += -W
+#EXTRA_CFLAGS += -Wwrite-strings 
+EXTRA_CFLAGS += -Wbad-function-cast 
+EXTRA_CFLAGS += -DIPCOMP_PREFIX
+
+.S.o:
+       $(CC) -D__ASSEMBLY__ -DNO_UNDERLINE -traditional -c $< -o $*.o
+
+asm-obj-$(CONFIG_M586)         += match586.o
+asm-obj-$(CONFIG_M586TSC)      += match586.o
+asm-obj-$(CONFIG_M586MMX)      += match586.o
+asm-obj-$(CONFIG_M686)         += match686.o
+asm-obj-$(CONFIG_MPENTIUMIII)  += match686.o
+asm-obj-$(CONFIG_MPENTIUM4)    += match686.o
+asm-obj-$(CONFIG_MK6)          += match586.o
+asm-obj-$(CONFIG_MK7)          += match686.o
+asm-obj-$(CONFIG_MCRUSOE)      += match586.o
+asm-obj-$(CONFIG_MWINCHIPC6)   += match586.o
+asm-obj-$(CONFIG_MWINCHIP2)    += match686.o
+asm-obj-$(CONFIG_MWINCHIP3D)   += match686.o
+
+obj-y += $(asm-obj-y)
+ifneq ($(strip $(asm-obj-y)),)
+  EXTRA_CFLAGS += -DASMV
+endif
+
+active-objs     := $(sort $(obj-y) $(obj-m))
+L_OBJS          := $(obj-y)
+M_OBJS          := $(obj-m)
+MIX_OBJS        := $(filter $(export-objs), $(active-objs))
+
+include $(TOPDIR)/Rules.make
+
+$(obj-y) :  $(TOPDIR)/include/linux/config.h $(TOPDIR)/include/linux/autoconf.h
+
+
+clean:
+       -rm -f *.o *.a
+
+checkprograms:
+programs: $(L_TARGET)
+
+#
+# $Log: Makefile,v $
+# Revision 1.9  2002-04-24 07:55:32  mcr
+#      #include patches and Makefiles for post-reorg compilation.
+#
+# Revision 1.8  2002/04/24 07:36:44  mcr
+# Moved from ./zlib/Makefile,v
+#
+# Revision 1.7  2002/03/27 23:34:35  mcr
+#      added programs: target
+#
+# Revision 1.6  2001/12/05 20:19:08  henry
+# use new compile-control variable
+#
+# Revision 1.5  2001/11/27 16:38:08  mcr
+#      added new "checkprograms" target to deal with programs that
+#      are required for "make check", but that may not be ready to
+#      build for every user due to external dependancies.
+#
+# Revision 1.4  2001/10/24 14:46:24  henry
+# Makefile.inc
+#
+# Revision 1.3  2001/04/21 23:05:24  rgb
+# Update asm directives for 2.4 style makefiles.
+#
+# Revision 1.2  2001/01/29 22:22:00  rgb
+# Convert to 2.4 new style with back compat.
+#
+# Revision 1.1.1.1  2000/09/29 18:51:33  rgb
+# zlib_beginnings
+#
+#
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/lib/zlib/Makefile.objs     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,27 @@
+obj-$(CONFIG_IPSEC_IPCOMP) += adler32.o
+obj-$(CONFIG_IPSEC_IPCOMP) += deflate.o
+obj-$(CONFIG_IPSEC_IPCOMP) += infblock.o
+obj-$(CONFIG_IPSEC_IPCOMP) += infcodes.o
+obj-$(CONFIG_IPSEC_IPCOMP) += inffast.o
+obj-$(CONFIG_IPSEC_IPCOMP) += inflate.o
+obj-$(CONFIG_IPSEC_IPCOMP) += inftrees.o
+obj-$(CONFIG_IPSEC_IPCOMP) += infutil.o
+obj-$(CONFIG_IPSEC_IPCOMP) += trees.o
+obj-$(CONFIG_IPSEC_IPCOMP) += zutil.o
+
+asm-obj-$(CONFIG_M586)          += ${LIBZLIBSRCDIR}/match586.o
+asm-obj-$(CONFIG_M586TSC)       += ${LIBZLIBSRCDIR}/match586.o
+asm-obj-$(CONFIG_M586MMX)       += ${LIBZLIBSRCDIR}/match586.o
+asm-obj-$(CONFIG_M686)          += ${LIBZLIBSRCDIR}/match686.o
+asm-obj-$(CONFIG_MPENTIUMIII)   += ${LIBZLIBSRCDIR}/match686.o
+asm-obj-$(CONFIG_MPENTIUM4)     += ${LIBZLIBSRCDIR}/match686.o
+asm-obj-$(CONFIG_MK6)           += ${LIBZLIBSRCDIR}/match586.o
+asm-obj-$(CONFIG_MK7)           += ${LIBZLIBSRCDIR}/match686.o
+asm-obj-$(CONFIG_MCRUSOE)       += ${LIBZLIBSRCDIR}/match586.o
+asm-obj-$(CONFIG_MWINCHIPC6)    += ${LIBZLIBSRCDIR}/match586.o
+asm-obj-$(CONFIG_MWINCHIP2)     += ${LIBZLIBSRCDIR}/match686.o
+asm-obj-$(CONFIG_MWINCHIP3D)    += ${LIBZLIBSRCDIR}/match686.o
+
+EXTRA_CFLAGS += -DIPCOMP_PREFIX
+
+
--- swan26/net/Kconfig.preipsec 2005-09-01 18:15:19.000000000 -0400
+++ swan26/net/Kconfig  2005-09-03 16:51:17.000000000 -0400
@@ -215,2 +215,6 @@
 
+if INET
+source "net/ipsec/Kconfig"
+endif # if INET
+
 endif   # if NET
--- /distros/kernel/linux-2.6.3-rc4/net/Makefile        Mon Feb 16 21:22:12 2004
+++ ref26/net/Makefile  Thu Feb 19 21:02:25 2004
@@ -42,3 +42,6 @@
 ifeq ($(CONFIG_NET),y)
 obj-$(CONFIG_SYSCTL)           += sysctl_net.o
 endif
+
+obj-$(CONFIG_KLIPS)             += ipsec/
+
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/Kconfig     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,172 @@
+#
+# IPSEC configuration
+# Copyright (C) 2004 Michael Richardson <mcr@freeswan.org>
+# 
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the
+# Free Software Foundation; either version 2 of the License, or (at your
+# option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+# for more details.
+#
+# RCSID $Id: Kconfig,v 1.6.2.3 2007-12-06 15:51:01 paul Exp $
+
+config KLIPS
+       tristate "Openswan IPsec (KLIPS26)"
+       default n
+       help
+         KLIPS is the Openswan (www.openswan.org) Kernel Level IP Security
+         system. It is extensively tested, and has interoperated with
+         many other systems. 
+          It provides "ipsecX" devices on which one can do firewalling.
+          The userland, is compatible with both KLIPS and 26sec.
+
+menu "KLIPS options"
+       depends on KLIPS
+
+config KLIPS_ESP
+       bool 'Encapsulating Security Payload - ESP ("VPN")'
+       default y
+       help
+          This option provides support for the IPSEC Encapsulation Security
+          Payload (IP protocol 50) which provides packet layer content
+           hiding, and content authentication.
+          It is recommended to enable this.  RFC2406
+
+config KLIPS_AH
+       bool 'Authentication Header - AH'
+       default n
+       help
+           This option provides support for the IPSEC Authentication Header
+           (IP protocol 51) which provides packet layer sender and content
+           authentication. It does not provide for confidentiality.
+          It is not recommended to enable this.  RFC2402
+
+config KLIPS_AUTH_HMAC_MD5
+       bool 'HMAC-MD5 authentication algorithm' 
+       default y
+       help
+           The HMAC-MD5 algorithm is used by ESP (and AH) to guarantee packet
+          integrity. There is little reason not to include it.
+
+config KLIPS_AUTH_HMAC_SHA1
+       bool 'HMAC-SHA1 authentication algorithm' 
+       default y
+       help
+           The HMAC-SHA1 algorithm is used by ESP (and AH) to guarantee packet
+          integrity. SHA1 is a little slower than MD5, but is said to be 
+          a bit more secure. There is little reason not to include it.
+
+config KLIPS_ALG
+       bool 'KLIPS_ALG software encryption'
+       default y
+       help
+          You should only disabled this if using the external OCF patch
+          for hardware offload.
+
+config KLIPS_ENC_CRYPTOAPI
+       bool 'CryptoAPI algorithm interface'
+       default n
+       help
+          Enable the algorithm interface to make all CryptoAPI 1.0 algorithms
+          available to KLIPS.
+
+config KLIPS_ENC_1DES
+       bool 'Include 1DES with CryptoAPI'
+       default n
+       depends on KLIPS_ENC_CRYPTOAPI
+       help
+          The CryptoAPI interface does not include support for every algorithm
+          yet, and one that it doesn't support by default is the VERY WEAK
+          1DES. Select this if you are terminally stupid.
+       
+config KLIPS_ENC_3DES
+       bool '3DES encryption algorithm'
+       default y
+       help
+           The 3DES algorithm is used by ESP to provide for packet privacy.
+          3DES is 3-repeats of the DES algorithm. 3DES is widely supported,
+          and analyzed and is considered very secure. 1DES is not supported.
+
+config KLIPS_ENC_AES
+       bool 'AES encryption algorithm'
+       default y
+       help
+           The AES algorithm is used by ESP to provide for packet privacy.
+          AES the NIST replacement for DES. AES is being widely analyzed,
+           and is very fast.
+
+config KLIPS_ENC_NULL
+       bool 'NULL NON-encryption algorithm'
+       default n
+       help
+          NON encryption algo , maybe useful for ESP auth only scenarios
+          (eg: with NAT-T), see RFC 2410.
+
+config KLIPS_IPCOMP
+       bool 'IP compression'
+       default y
+       help
+           The IPcomp protocol is used prior to ESP to make the packet
+          smaller. Once encrypted, compression will fail, so any link
+          layer efforts (e.g. PPP) will not work. 
+
+config KLIPS_DEBUG
+       bool 'IPsec debugging'
+       default y 
+       help
+           KLIPS includes a lot of debugging code. Unless there is a real
+          tangible benefit to removing this code, it should be left in place.
+          Debugging connections without access to kernel level debugging is
+          essentially impossible. Leave this on.
+
+endmenu
+
+#
+#
+# $Log: Kconfig,v $
+# Revision 1.6.2.3  2007-12-06 15:51:01  paul
+# Enable KLIPS_ALG in default build, when not using Makefile.inc.
+# Patch by Laszlo Attila Toth
+#
+# Revision 1.6.2.2  2006/10/11 18:14:33  paul
+# Add JuanJo Ciarlante's ESP_NULL patches for KLIPS, but leave it disabled
+# per default.
+#
+# Revision 1.6.2.1  2006/04/20 16:33:06  mcr
+# remove all of CONFIG_KLIPS_ALG --- one can no longer build without it.
+# Fix in-kernel module compilation. Sub-makefiles do not work.
+#
+# Revision 1.6  2005/05/18 20:55:27  mcr
+#      default cryptoapi to n.
+#
+# Revision 1.5  2005/05/11 01:23:25  mcr
+#      added 1DES option to cryptoapi.
+#
+# Revision 1.4  2005/04/29 05:29:54  mcr
+#      add option to include cryptoapi algorithms.
+#
+# Revision 1.3  2004/08/17 03:27:23  mcr
+#      klips 2.6 edits.
+#
+# Revision 1.2  2004/08/14 03:27:39  mcr
+#      2.6 kernel build/configuration files.
+#
+# Revision 1.1  2004/08/14 02:47:55  mcr
+#      kernel build/config patches
+#
+# Revision 1.3  2004/02/24 17:17:04  mcr
+#      s/CONFIG_IPSEC/CONFIG_KLIPS/ as 26sec uses "CONFIG_IPSEC" to
+#      turn it on/off as well.
+#
+# Revision 1.2  2004/02/22 06:50:42  mcr
+#      kernel 2.6 port - merged with 2.4 code.
+#
+# Revision 1.1.2.1  2004/02/20 02:07:53  mcr
+#      module configuration for KLIPS 2.6
+#
+#
+
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/Makefile     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,195 @@
+# Makefile for KLIPS kernel code as a module    for 2.6 kernels
+#
+# Makefile for KLIPS kernel code as a module
+# Copyright (C) 1998, 1999, 2000,2001  Richard Guy Briggs.
+# Copyright (C) 2002-2004      Michael Richardson <mcr@freeswan.org>
+# 
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the
+# Free Software Foundation; either version 2 of the License, or (at your
+# option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+# for more details.
+#
+# RCSID $Id: Makefile.fs2_6,v 1.8.2.2 2006-10-11 18:14:33 paul Exp $
+#
+# Note! Dependencies are done automagically by 'make dep', which also
+# removes any old dependencies. DON'T put your own dependencies here
+# unless it's something special (ie not a .c file).
+#
+
+OPENSWANSRCDIR?=.
+KLIPS_TOP?=.
+
+-include ${OPENSWANSRCDIR}/Makefile.ver
+
+base-klips-objs := 
+
+base-klips-objs+= ipsec_init.o ipsec_sa.o ipsec_radij.o radij.o
+base-klips-objs+= ipsec_life.o ipsec_proc.o
+base-klips-objs+= ipsec_tunnel.o ipsec_xmit.o ipsec_rcv.o ipsec_ipip.o
+base-klips-objs+= ipsec_snprintf.o
+base-klips-objs+= sysctl_net_ipsec.o 
+base-klips-objs+= pfkey_v2.o pfkey_v2_parser.o pfkey_v2_ext_process.o 
+base-klips-objs+= version.o
+
+base-klips-objs+= satot.o
+base-klips-objs+= addrtot.o
+base-klips-objs+= ultot.o 
+base-klips-objs+= addrtypeof.o
+base-klips-objs+= anyaddr.o
+base-klips-objs+= initaddr.o
+base-klips-objs+= ultoa.o 
+base-klips-objs+= addrtoa.o 
+base-klips-objs+= subnettoa.o 
+base-klips-objs+= subnetof.o 
+base-klips-objs+= goodmask.o 
+base-klips-objs+= datatot.o 
+base-klips-objs+= rangetoa.o 
+base-klips-objs+= prng.o 
+base-klips-objs+= pfkey_v2_parse.o 
+base-klips-objs+= pfkey_v2_build.o 
+base-klips-objs+= pfkey_v2_debug.o 
+base-klips-objs+= pfkey_v2_ext_bits.o 
+base-klips-objs+= version.o
+
+obj-${CONFIG_KLIPS} += ipsec.o
+
+ipsec-objs += ${base-klips-objs}
+
+ipsec-$(CONFIG_KLIPS_ESP)     += ipsec_esp.o
+ipsec-$(CONFIG_KLIPS_IPCOMP)  += ipsec_ipcomp.o
+ipsec-$(CONFIG_KLIPS_AUTH_HMAC_MD5)  += ipsec_md5c.o
+ipsec-$(CONFIG_KLIPS_AUTH_HMAC_SHA1) += ipsec_sha1.o
+
+# AH, if you really think you need it.
+ipsec-$(CONFIG_KLIPS_AH)   += ipsec_ah.o
+
+ipsec-y += ipsec_alg.o 
+
+# include code from DES subdir
+crypto-$(CONFIG_KLIPS_ENC_3DES) += des/ipsec_alg_3des.o
+crypto-$(CONFIG_KLIPS_ENC_3DES) += des/cbc_enc.o
+crypto-$(CONFIG_KLIPS_ENC_3DES) += des/ecb_enc.o
+crypto-$(CONFIG_KLIPS_ENC_3DES) += des/set_key.o
+
+ifeq ($(strip ${SUBARCH}),)
+SUBARCH:=${ARCH}
+endif
+
+# the assembly version expects frame pointers, which are
+# optional in many kernel builds. If you want speed, you should
+# probably use cryptoapi code instead.
+USEASSEMBLY=${SUBARCH}${CONFIG_FRAME_POINTER}
+ifeq (${USEASSEMBLY},i386y)
+crypto-$(CONFIG_KLIPS_ENC_3DES) += des/dx86unix.o
+else
+crypto-$(CONFIG_KLIPS_ENC_3DES) += des/des_enc.o
+endif
+
+# include code from AES subdir
+crypto-$(CONFIG_KLIPS_ENC_AES) += aes/ipsec_alg_aes.o
+crypto-$(CONFIG_KLIPS_ENC_AES) += aes/aes_xcbc_mac.o
+crypto-$(CONFIG_KLIPS_ENC_AES) += aes/aes_cbc.o
+
+ifeq ($(strip ${SUBARCH}),)
+SUBARCH:=${ARCH}
+endif
+
+USEASSEMBLY=${SUBARCH}${CONFIG_FRAME_POINTER}
+ifeq (${USEASSEMBLY},i386y)
+crypto-$(CONFIG_KLIPS_ENC_AES) += aes/aes-i586.o
+else
+crypto-$(CONFIG_KLIPS_ENC_AES) += aes/aes.o
+endif
+
+crypto-$(CONFIG_KLIPS_ENC_NULL) += null/ipsec_alg_null.o
+
+ipsec-y += ${crypto-y}
+
+ipsec-$(CONFIG_KLIPS_ENC_CRYPTOAPI) += ipsec_alg_cryptoapi.o
+
+# IPcomp stuff
+base-ipcomp-objs := ipcomp.o 
+base-ipcomp-objs += adler32.o
+base-ipcomp-objs += deflate.o
+base-ipcomp-objs += infblock.o
+base-ipcomp-objs += infcodes.o
+base-ipcomp-objs += inffast.o
+base-ipcomp-objs += inflate.o
+base-ipcomp-objs += inftrees.o
+base-ipcomp-objs += infutil.o
+base-ipcomp-objs += trees.o
+base-ipcomp-objs += zutil.o
+asm-ipcomp-obj-$(CONFIG_M586)          += match586.o
+asm-ipcomp-obj-$(CONFIG_M586TSC)       += match586.o
+asm-ipcomp-obj-$(CONFIG_M586MMX)       += match586.o
+asm-ipcomp-obj-$(CONFIG_M686)          += match686.o
+asm-ipcomp-obj-$(CONFIG_MPENTIUMIII)   += match686.o
+asm-ipcomp-obj-$(CONFIG_MPENTIUM4)     += match686.o
+asm-ipcomp-obj-$(CONFIG_MK6)           += match586.o
+asm-ipcomp-obj-$(CONFIG_MK7)           += match686.o
+asm-ipcomp-obj-$(CONFIG_MCRUSOE)       += match586.o
+asm-ipcomp-obj-$(CONFIG_MWINCHIPC6)    += match586.o
+asm-ipcomp-obj-$(CONFIG_MWINCHIP2)     += match686.o
+asm-ipcomp-obj-$(CONFIG_MWINCHIP3D)    += match686.o
+base-ipcomp-objs += ${asm-ipcomp-obj-y}
+
+ipsec-$(CONFIG_KLIPS_IPCOMP) += ${base-ipcomp-objs}
+
+EXTRA_CFLAGS += -DIPCOMP_PREFIX
+
+#
+# $Log: Makefile.fs2_6,v $
+# Revision 1.8.2.2  2006-10-11 18:14:33  paul
+# Add JuanJo Ciarlante's ESP_NULL patches for KLIPS, but leave it disabled
+# per default.
+#
+# Revision 1.8.2.1  2006/04/20 16:33:06  mcr
+# remove all of CONFIG_KLIPS_ALG --- one can no longer build without it.
+# Fix in-kernel module compilation. Sub-makefiles do not work.
+#
+# Revision 1.8  2005/05/11 03:15:42  mcr
+#      adjusted makefiles to sanely build modules properly.
+#
+# Revision 1.7  2005/04/13 22:52:12  mcr
+#      moved KLIPS specific snprintf() wrapper to seperate file.
+#
+# Revision 1.6  2004/08/22 05:02:03  mcr
+#      organized symbols such that it is easier to build modules.
+#
+# Revision 1.5  2004/08/18 01:43:56  mcr
+#      adjusted makefile enumation so that it can be used by module
+#      wrapper.
+#
+# Revision 1.4  2004/08/17 03:27:23  mcr
+#      klips 2.6 edits.
+#
+# Revision 1.3  2004/08/04 16:50:13  mcr
+#      removed duplicate definition of dx86unix.o
+#
+# Revision 1.2  2004/08/03 18:21:09  mcr
+#      only set KLIPS_TOP and OPENSWANSRCDIR if not already set.
+#
+# Revision 1.1  2004/07/26 15:02:22  mcr
+#      makefile for KLIPS module for 2.6.
+#
+# Revision 1.3  2004/02/24 17:17:04  mcr
+#      s/CONFIG_IPSEC/CONFIG_KLIPS/ as 26sec uses "CONFIG_IPSEC" to
+#      turn it on/off as well.
+#
+# Revision 1.2  2004/02/22 06:50:42  mcr
+#      kernel 2.6 port - merged with 2.4 code.
+#
+# Revision 1.1.2.1  2004/02/20 02:07:53  mcr
+#      module configuration for KLIPS 2.6
+#
+#
+# Local Variables:
+# compile-command: "(cd ../../.. && source umlsetup.sh && make -C ${POOLSPACE} module/ipsec.o)"
+# End Variables:
+#
+
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/README-zlib     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,147 @@
+zlib 1.1.4 is a general purpose data compression library.  All the code
+is thread safe.  The data format used by the zlib library
+is described by RFCs (Request for Comments) 1950 to 1952 in the files 
+http://www.ietf.org/rfc/rfc1950.txt (zlib format), rfc1951.txt (deflate
+format) and rfc1952.txt (gzip format). These documents are also available in
+other formats from ftp://ftp.uu.net/graphics/png/documents/zlib/zdoc-index.html
+
+All functions of the compression library are documented in the file zlib.h
+(volunteer to write man pages welcome, contact jloup@gzip.org). A usage
+example of the library is given in the file example.c which also tests that
+the library is working correctly. Another example is given in the file
+minigzip.c. The compression library itself is composed of all source files
+except example.c and minigzip.c.
+
+To compile all files and run the test program, follow the instructions
+given at the top of Makefile. In short "make test; make install"
+should work for most machines. For Unix: "./configure; make test; make install"
+For MSDOS, use one of the special makefiles such as Makefile.msc.
+For VMS, use Make_vms.com or descrip.mms.
+
+Questions about zlib should be sent to <zlib@gzip.org>, or to
+Gilles Vollant <info@winimage.com> for the Windows DLL version.
+The zlib home page is http://www.zlib.org or http://www.gzip.org/zlib/
+Before reporting a problem, please check this site to verify that
+you have the latest version of zlib; otherwise get the latest version and
+check whether the problem still exists or not.
+
+PLEASE read the zlib FAQ http://www.gzip.org/zlib/zlib_faq.html
+before asking for help.
+
+Mark Nelson <markn@ieee.org> wrote an article about zlib for the Jan. 1997
+issue of  Dr. Dobb's Journal; a copy of the article is available in
+http://dogma.net/markn/articles/zlibtool/zlibtool.htm
+
+The changes made in version 1.1.4 are documented in the file ChangeLog.
+The only changes made since 1.1.3 are bug corrections:
+
+- ZFREE was repeated on same allocation on some error conditions.
+  This creates a security problem described in
+  http://www.zlib.org/advisory-2002-03-11.txt
+- Returned incorrect error (Z_MEM_ERROR) on some invalid data
+- Avoid accesses before window for invalid distances with inflate window
+  less than 32K.
+- force windowBits > 8 to avoid a bug in the encoder for a window size
+  of 256 bytes. (A complete fix will be available in 1.1.5).
+
+The beta version 1.1.5beta includes many more changes. A new official
+version 1.1.5 will be released as soon as extensive testing has been
+completed on it.
+
+
+Unsupported third party contributions are provided in directory "contrib".
+
+A Java implementation of zlib is available in the Java Development Kit
+http://www.javasoft.com/products/JDK/1.1/docs/api/Package-java.util.zip.html
+See the zlib home page http://www.zlib.org for details.
+
+A Perl interface to zlib written by Paul Marquess <pmarquess@bfsec.bt.co.uk>
+is in the CPAN (Comprehensive Perl Archive Network) sites
+http://www.cpan.org/modules/by-module/Compress/
+
+A Python interface to zlib written by A.M. Kuchling <amk@magnet.com>
+is available in Python 1.5 and later versions, see
+http://www.python.org/doc/lib/module-zlib.html
+
+A zlib binding for TCL written by Andreas Kupries <a.kupries@westend.com>
+is availlable at http://www.westend.com/~kupries/doc/trf/man/man.html
+
+An experimental package to read and write files in .zip format,
+written on top of zlib by Gilles Vollant <info@winimage.com>, is
+available at http://www.winimage.com/zLibDll/unzip.html
+and also in the contrib/minizip directory of zlib.
+
+
+Notes for some targets:
+
+- To build a Windows DLL version, include in a DLL project zlib.def, zlib.rc
+  and all .c files except example.c and minigzip.c; compile with -DZLIB_DLL
+  The zlib DLL support was initially done by Alessandro Iacopetti and is
+  now maintained by Gilles Vollant <info@winimage.com>. Check the zlib DLL
+  home page at http://www.winimage.com/zLibDll
+
+  From Visual Basic, you can call the DLL functions which do not take
+  a structure as argument: compress, uncompress and all gz* functions.
+  See contrib/visual-basic.txt for more information, or get
+  http://www.tcfb.com/dowseware/cmp-z-it.zip
+
+- For 64-bit Irix, deflate.c must be compiled without any optimization.
+  With -O, one libpng test fails. The test works in 32 bit mode (with
+  the -n32 compiler flag). The compiler bug has been reported to SGI.
+
+- zlib doesn't work with gcc 2.6.3 on a DEC 3000/300LX under OSF/1 2.1   
+  it works when compiled with cc.
+
+- on Digital Unix 4.0D (formely OSF/1) on AlphaServer, the cc option -std1
+  is necessary to get gzprintf working correctly. This is done by configure.
+
+- zlib doesn't work on HP-UX 9.05 with some versions of /bin/cc. It works
+  with other compilers. Use "make test" to check your compiler.
+
+- gzdopen is not supported on RISCOS, BEOS and by some Mac compilers.
+
+- For Turbo C the small model is supported only with reduced performance to
+  avoid any far allocation; it was tested with -DMAX_WBITS=11 -DMAX_MEM_LEVEL=3
+
+- For PalmOs, see http://www.cs.uit.no/~perm/PASTA/pilot/software.html
+  Per Harald Myrvang <perm@stud.cs.uit.no>
+
+
+Acknowledgments:
+
+  The deflate format used by zlib was defined by Phil Katz. The deflate
+  and zlib specifications were written by L. Peter Deutsch. Thanks to all the
+  people who reported problems and suggested various improvements in zlib;
+  they are too numerous to cite here.
+
+Copyright notice:
+
+ (C) 1995-2002 Jean-loup Gailly and Mark Adler
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+
+  Jean-loup Gailly        Mark Adler
+  jloup@gzip.org          madler@alumni.caltech.edu
+
+If you use the zlib library in a product, we would appreciate *not*
+receiving lengthy legal documents to sign. The sources are provided
+for free but without warranty of any kind.  The library has been
+entirely written by Jean-loup Gailly and Mark Adler; it does not
+include third-party code.
+
+If you redistribute modified sources, we would appreciate that you include
+in the file ChangeLog history information documenting your changes.
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/README-zlib.freeswan     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,13 @@
+The only changes made to these files for use in FreeS/WAN are:
+
+ - In zconf.h, macros are defined to prefix global symbols with "ipcomp_"
+   (or "_ipcomp"), when compiled with -DIPCOMP_PREFIX.
+ - The copyright strings are defined local (static)
+
+ The above changes are made to avoid name collisions with ppp_deflate
+ and ext2compr.
+
+ - Files not needed for FreeS/WAN have been removed
+
+ See the "README" file for information about where to obtain the complete
+ zlib package.
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/addrtoa.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,67 @@
+/*
+ * addresses to ASCII
+ * Copyright (C) 1998, 1999  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id: addrtoa.c,v 1.10 2004-07-10 07:43:47 mcr Exp $
+ */
+#include "openswan.h"
+
+#define        NBYTES  4               /* bytes in an address */
+#define        PERBYTE 4               /* three digits plus a dot or NUL */
+#define        BUFLEN  (NBYTES*PERBYTE)
+
+#if BUFLEN != ADDRTOA_BUF
+#error "ADDRTOA_BUF in openswan.h inconsistent with addrtoa() code"
+#endif
+
+/*
+ - addrtoa - convert binary address to ASCII dotted decimal
+ */
+size_t                         /* space needed for full conversion */
+addrtoa(addr, format, dst, dstlen)
+struct in_addr addr;
+int format;                    /* character */
+char *dst;                     /* need not be valid if dstlen is 0 */
+size_t dstlen;
+{
+       unsigned long a = ntohl(addr.s_addr);
+       int i;
+       size_t n;
+       unsigned long byte;
+       char buf[BUFLEN];
+       char *p;
+
+       switch (format) {
+       case 0:
+               break;
+       default:
+               return 0;
+               break;
+       }
+
+       p = buf;
+       for (i = NBYTES-1; i >= 0; i--) {
+               byte = (a >> (i*8)) & 0xff;
+               p += ultoa(byte, 10, p, PERBYTE);
+               if (i != 0)
+                       *(p-1) = '.';
+       }
+       n = p - buf;
+
+       if (dstlen > 0) {
+               if (n > dstlen)
+                       buf[dstlen - 1] = '\0';
+               strcpy(dst, buf);
+       }
+       return n;
+}
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/addrtot.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,431 @@
+/*
+ * addresses to text
+ * Copyright (C) 2000  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id: addrtot.c,v 1.22.2.2 2007-10-30 21:32:26 paul Exp $
+ */
+
+#if defined(__KERNEL__) && defined(__HAVE_ARCH_STRSTR)
+#include <linux/string.h>
+#endif
+
+#include "openswan.h"
+
+#define        IP4BYTES        4       /* bytes in an IPv4 address */
+#define        PERBYTE         4       /* three digits plus a dot or NUL */
+#define        IP6BYTES        16      /* bytes in an IPv6 address */
+
+/* forwards */
+static size_t normal4(const unsigned char *s, size_t len, char *b, char **dp);
+static size_t normal6(const unsigned char *s, size_t len, char *b, char **dp, int squish);
+static size_t reverse4(const unsigned char *s, size_t len, char *b, char **dp);
+static size_t reverse6(const unsigned char *s, size_t len, char *b, char **dp);
+
+#if defined(__KERNEL__) && !defined(__HAVE_ARCH_STRSTR) 
+#define strstr ipsec_strstr
+/*
+ * Find the first occurrence of find in s.
+ * (from NetBSD 1.6's /src/lib/libc/string/strstr.c)
+ */
+static char *strstr(const char *s, const char *find);
+
+static char *
+strstr(s, find)
+       const char *s, *find;
+{
+       char c, sc;
+       size_t len;
+
+       if ((c = *find++) != 0) {
+               len = strlen(find);
+               do {
+                       do {
+                               if ((sc = *s++) == 0)
+                                       return (NULL);
+                       } while (sc != c);
+               } while (strncmp(s, find, len) != 0);
+               s--;
+       }
+       /* LINTED interface specification */
+       return ((char *)s);
+}
+#endif
+
+/*
+ - addrtot - convert binary address to text (dotted decimal or IPv6 string)
+ */
+size_t                         /* space needed for full conversion */
+addrtot(src, format, dst, dstlen)
+const ip_address *src;
+int format;                    /* character */
+char *dst;                     /* need not be valid if dstlen is 0 */
+size_t dstlen;
+{
+       const unsigned char *b;
+       size_t n;
+       char buf[1+ADDRTOT_BUF+1];      /* :address: */
+       char *p;
+       int t = addrtypeof(src);
+#      define  TF(t, f)        (((t)<<8) | (f))
+
+       n = addrbytesptr(src, &b);
+       if (n == 0) {
+       bad:
+         dst[0]='\0';
+         strncat(dst, "<invalid>", dstlen);
+         return sizeof("<invalid>");
+       }
+
+       switch (TF(t, format)) {
+       case TF(AF_INET, 0):
+               n = normal4(b, n, buf, &p);
+               break;
+       case TF(AF_INET6, 0):
+               n = normal6(b, n, buf, &p, 1);
+               break;
+       case TF(AF_INET, 'Q'):
+               n = normal4(b, n, buf, &p);
+               break;
+       case TF(AF_INET6, 'Q'):
+               n = normal6(b, n, buf, &p, 0);
+               break;
+       case TF(AF_INET, 'r'):
+               n = reverse4(b, n, buf, &p);
+               break;
+       case TF(AF_INET6, 'r'):
+               n = reverse6(b, n, buf, &p);
+               break;
+       default:                /* including (AF_INET, 'R') */
+               goto bad;
+               break;
+       }
+
+       if (dstlen > 0) {
+               if (dstlen < n)
+                       p[dstlen - 1] = '\0';
+               strcpy(dst, p);
+       }
+       return n;
+}
+
+/*
+ - normal4 - normal IPv4 address-text conversion
+ */
+static size_t                  /* size of text, including NUL */
+normal4(srcp, srclen, buf, dstp)
+const unsigned char *srcp;
+size_t srclen;
+char *buf;                     /* guaranteed large enough */
+char **dstp;                   /* where to put result pointer */
+{
+       int i;
+       char *p;
+
+       if (srclen != IP4BYTES) /* "can't happen" */
+               return 0;
+       p = buf;
+       for (i = 0; i < IP4BYTES; i++) {
+               p += ultot(srcp[i], 10, p, PERBYTE);
+               if (i != IP4BYTES - 1)
+                       *(p-1) = '.';   /* overwrites the NUL */
+       }
+       *dstp = buf;
+       return p - buf;
+}
+
+/*
+ - normal6 - normal IPv6 address-text conversion
+ */
+static size_t                  /* size of text, including NUL */
+normal6(srcp, srclen, buf, dstp, squish)
+const unsigned char *srcp;
+size_t srclen;
+char *buf;                     /* guaranteed large enough, plus 2 */
+char **dstp;                   /* where to put result pointer */
+int    squish;                  /* whether to squish out 0:0 */
+{
+       int i;
+       unsigned long piece;
+       char *p;
+       char *q;
+
+       if (srclen != IP6BYTES) /* "can't happen" */
+               return 0;
+       p = buf;
+       *p++ = ':';
+       for (i = 0; i < IP6BYTES/2; i++) {
+               piece = (srcp[2*i] << 8) + srcp[2*i + 1];
+               p += ultot(piece, 16, p, 5);    /* 5 = abcd + NUL */
+               *(p-1) = ':';   /* overwrites the NUL */
+       }
+       *p = '\0';
+       q = strstr(buf, ":0:0:");
+       if (squish && q != NULL) {      /* zero squishing is possible */
+               p = q + 1;
+               while (*p == '0' && *(p+1) == ':')
+                       p += 2;
+               q++;
+               *q++ = ':';     /* overwrite first 0 */
+               while (*p != '\0')
+                       *q++ = *p++;
+               *q = '\0';
+               if (!(*(q-1) == ':' && *(q-2) == ':'))
+                       *--q = '\0';    /* strip final : unless :: */
+               p = buf;
+               if (!(*p == ':' && *(p+1) == ':'))
+                       p++;    /* skip initial : unless :: */
+       } else {
+               q = p;
+               *--q = '\0';    /* strip final : */
+               p = buf + 1;    /* skip initial : */
+       }
+       *dstp = p;
+       return q - p + 1;
+}
+
+/*
+ - reverse4 - IPv4 reverse-lookup conversion
+ */
+static size_t                  /* size of text, including NUL */
+reverse4(srcp, srclen, buf, dstp)
+const unsigned char *srcp;
+size_t srclen;
+char *buf;                     /* guaranteed large enough */
+char **dstp;                   /* where to put result pointer */
+{
+       int i;
+       char *p;
+
+       if (srclen != IP4BYTES) /* "can't happen" */
+               return 0;
+       p = buf;
+       for (i = IP4BYTES-1; i >= 0; i--) {
+               p += ultot(srcp[i], 10, p, PERBYTE);
+               *(p-1) = '.';   /* overwrites the NUL */
+       }
+       strcpy(p, "IN-ADDR.ARPA.");
+       *dstp = buf;
+       return strlen(buf) + 1;
+}
+
+/*
+ - reverse6 - IPv6 reverse-lookup conversion (RFC 1886)
+ * A trifle inefficient, really shouldn't use ultot...
+ */
+static size_t                  /* size of text, including NUL */
+reverse6(srcp, srclen, buf, dstp)
+const unsigned char *srcp;
+size_t srclen;
+char *buf;                     /* guaranteed large enough */
+char **dstp;                   /* where to put result pointer */
+{
+       int i;
+       unsigned long piece;
+       char *p;
+
+       if (srclen != IP6BYTES) /* "can't happen" */
+               return 0;
+       p = buf;
+       for (i = IP6BYTES-1; i >= 0; i--) {
+               piece = srcp[i];
+               p += ultot(piece&0xf, 16, p, 2);
+               *(p-1) = '.';
+               p += ultot(piece>>4, 16, p, 2);
+               *(p-1) = '.';
+       }
+       strcpy(p, "IP6.ARPA.");
+       *dstp = buf;
+       return strlen(buf) + 1;
+}
+
+/*
+ - reverse6 - modern IPv6 reverse-lookup conversion (RFC 2874)
+ * this version removed as it was obsoleted in the end.
+ */
+
+#ifdef ADDRTOT_MAIN
+
+#include <stdio.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#include <arpa/inet.h>
+
+void regress(void);
+
+int
+main(int argc, char *argv[])
+{
+       if (argc < 2) {
+               fprintf(stderr, "Usage: %s {addr|net/mask|begin...end|-r}\n",
+                                                               argv[0]);
+               exit(2);
+       }
+
+       if (strcmp(argv[1], "-r") == 0) {
+               regress();
+               fprintf(stderr, "regress() returned?!?\n");
+               exit(1);
+       }
+       exit(0);
+}
+
+struct rtab {
+       char *input;
+        char  format;
+       char *output;                   /* NULL means error expected */
+} rtab[] = {
+       {"1.2.3.0",                     0, "1.2.3.0"},
+       {"1:2::3:4",                    0, "1:2::3:4"},
+       {"1:2::3:4",                   'Q', "1:2:0:0:0:0:3:4"},
+       {"1:2:0:0:3:4:0:0",             0, "1:2::3:4:0:0"},
+       {"1.2.3.4",                    'r' , "4.3.2.1.IN-ADDR.ARPA."},
+       /*                                    0 1 2 3 4 5 6 7 8 9 a b c d e f 0 1 2 3 4 5 6 7 8 9 a b c d e f */
+       {"1:2::3:4",                   'r', "4.0.0.0.3.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.0.0.1.0.0.0.IP6.ARPA."},
+        {NULL,                         0, NULL}
+};
+
+void
+regress()
+{
+       struct rtab *r;
+       int status = 0;
+       ip_address a;
+       char in[100];
+       char buf[100];
+       const char *oops;
+       size_t n;
+
+       for (r = rtab; r->input != NULL; r++) {
+               strcpy(in, r->input);
+
+               /* convert it *to* internal format */
+               oops = ttoaddr(in, strlen(in), 0, &a);
+
+               /* now convert it back */
+
+               n = addrtot(&a, r->format, buf, sizeof(buf));
+
+               if (n == 0 && r->output == NULL)
+                       {}              /* okay, error expected */
+               
+               else if (n == 0) {
+                       printf("`%s' atoasr failed\n", r->input);
+                       status = 1;
+                       
+               } else if (r->output == NULL) {
+                       printf("`%s' atoasr succeeded unexpectedly '%c'\n",
+                                                       r->input, r->format);
+                       status = 1;
+               } else {
+                 if (strcasecmp(r->output, buf) != 0) {
+                   printf("`%s' '%c' gave `%s', expected `%s'\n",
+                          r->input, r->format, buf, r->output);
+                   status = 1;
+                 }
+               }
+       }
+       exit(status);
+}
+
+#endif /* ADDRTOT_MAIN */
+
+/*
+ * $Log: addrtot.c,v $
+ * Revision 1.22.2.2  2007-10-30 21:32:26  paul
+ * Added strstr prototype [dhr]
+ *
+ * Revision 1.22.2.1  2005/11/17 22:30:49  paul
+ * pull up strstr fix from head.
+ *
+ * Revision 1.22  2005/05/20 16:47:40  mcr
+ *     make strstr static if we need it.
+ *
+ * Revision 1.21  2005/03/21 00:35:12  mcr
+ *     test for strstr properly
+ *
+ * Revision 1.20  2004/11/09 22:52:20  mcr
+ *     until we figure out which kernels have strsep and which
+ *     do not (UML does not under certain circumstances), then
+ *     let's just provide our own.
+ *
+ * Revision 1.19  2004/10/08 16:30:33  mcr
+ *     pull-up of initial crypto-offload work.
+ *
+ * Revision 1.18  2004/09/18 19:33:08  mcr
+ *     use an appropriate kernel happy ifdef for strstr.
+ *
+ * Revision 1.17  2004/09/15 21:49:02  mcr
+ *     use local copy of strstr() if this is going in the kernel.
+ *     Not clear why this worked before, or why this shows up
+ *     for modules only.
+ *
+ * Revision 1.16  2004/07/10 07:43:47  mcr
+ * Moved from linux/lib/libfreeswan/addrtot.c,v
+ *
+ * Revision 1.15  2004/04/11 17:39:25  mcr
+ *     removed internal.h requirements.
+ *
+ * Revision 1.14  2004/03/08 01:59:08  ken
+ * freeswan.h -> openswan.h
+ *
+ * Revision 1.13  2004/01/05 23:21:05  mcr
+ *     if the address type is invalid, then return length of <invalid>
+ *     string!
+ *
+ * Revision 1.12  2003/12/30 06:42:48  mcr
+ *     added $Log: addrtot.c,v $
+ *     added Revision 1.22.2.2  2007-10-30 21:32:26  paul
+ *     added Added strstr prototype [dhr]
+ *     added
+ *     added Revision 1.22.2.1  2005/11/17 22:30:49  paul
+ *     added pull up strstr fix from head.
+ *     added
+ *     added Revision 1.22  2005/05/20 16:47:40  mcr
+ *     added   make strstr static if we need it.
+ *     added
+ *     added Revision 1.21  2005/03/21 00:35:12  mcr
+ *     added     test for strstr properly
+ *     added
+ *     added Revision 1.20  2004/11/09 22:52:20  mcr
+ *     added   until we figure out which kernels have strsep and which
+ *     added   do not (UML does not under certain circumstances), then
+ *     added   let's just provide our own.
+ *     added
+ *     added Revision 1.19  2004/10/08 16:30:33  mcr
+ *     added   pull-up of initial crypto-offload work.
+ *     added
+ *     added Revision 1.18  2004/09/18 19:33:08  mcr
+ *     added   use an appropriate kernel happy ifdef for strstr.
+ *     added
+ *     added Revision 1.17  2004/09/15 21:49:02  mcr
+ *     added   use local copy of strstr() if this is going in the kernel.
+ *     added   Not clear why this worked before, or why this shows up
+ *     added   for modules only.
+ *     added
+ *     added Revision 1.16  2004/07/10 07:43:47  mcr
+ *     added Moved from linux/lib/libfreeswan/addrtot.c,v
+ *     added
+ *     added Revision 1.15  2004/04/11 17:39:25  mcr
+ *     added   removed internal.h requirements.
+ *     added
+ *     added Revision 1.14  2004/03/08 01:59:08  ken
+ *     added freeswan.h -> openswan.h
+ *     added
+ *     added Revision 1.13  2004/01/05 23:21:05  mcr
+ *     added   if the address type is invalid, then return length of <invalid>
+ *     added   string!
+ *     added
+ *
+ *
+ */
+
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/addrtypeof.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,93 @@
+/*
+ * extract parts of an ip_address
+ * Copyright (C) 2000  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id: addrtypeof.c,v 1.10 2004-07-10 07:43:47 mcr Exp $
+ */
+#include "openswan.h"
+
+/*
+ - addrtypeof - get the type of an ip_address
+ */
+int
+addrtypeof(src)
+const ip_address *src;
+{
+       return src->u.v4.sin_family;
+}
+
+/*
+ - addrbytesptr - get pointer to the address bytes of an ip_address
+ */
+size_t                         /* 0 for error */
+addrbytesptr(src, dstp)
+const ip_address *src;
+const unsigned char **dstp;    /* NULL means just a size query */
+{
+       const unsigned char *p;
+       size_t n;
+
+       switch (src->u.v4.sin_family) {
+       case AF_INET:
+               p = (const unsigned char *)&src->u.v4.sin_addr.s_addr;
+               n = 4;
+               break;
+       case AF_INET6:
+               p = (const unsigned char *)&src->u.v6.sin6_addr;
+               n = 16;
+               break;
+       default:
+               return 0;
+               break;
+       }
+
+       if (dstp != NULL)
+               *dstp = p;
+       return n;
+}
+
+/*
+ - addrlenof - get length of the address bytes of an ip_address
+ */
+size_t                         /* 0 for error */
+addrlenof(src)
+const ip_address *src;
+{
+       return addrbytesptr(src, NULL);
+}
+
+/*
+ - addrbytesof - get the address bytes of an ip_address
+ */
+size_t                         /* 0 for error */
+addrbytesof(src, dst, dstlen)
+const ip_address *src;
+unsigned char *dst;
+size_t dstlen;
+{
+       const unsigned char *p;
+       size_t n;
+       size_t ncopy;
+
+       n = addrbytesptr(src, &p);
+       if (n == 0)
+               return 0;
+
+       if (dstlen > 0) {
+               ncopy = n;
+               if (ncopy > dstlen)
+                       ncopy = dstlen;
+               memcpy(dst, p, ncopy);
+       }
+       return n;
+}
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/adler32.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,49 @@
+/* adler32.c -- compute the Adler-32 checksum of a data stream
+ * Copyright (C) 1995-2002 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h 
+ */
+
+/* @(#) $Id: adler32.c,v 1.6 2004-07-10 19:11:18 mcr Exp $ */
+
+#include <zlib/zlib.h>
+#include <zlib/zconf.h>
+
+#define BASE 65521L /* largest prime smaller than 65536 */
+#define NMAX 5552
+/* NMAX is the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1 */
+
+#define DO1(buf,i)  {s1 += buf[i]; s2 += s1;}
+#define DO2(buf,i)  DO1(buf,i); DO1(buf,i+1);
+#define DO4(buf,i)  DO2(buf,i); DO2(buf,i+2);
+#define DO8(buf,i)  DO4(buf,i); DO4(buf,i+4);
+#define DO16(buf)   DO8(buf,0); DO8(buf,8);
+
+/* ========================================================================= */
+uLong ZEXPORT adler32(adler, buf, len)
+    uLong adler;
+    const Bytef *buf;
+    uInt len;
+{
+    unsigned long s1 = adler & 0xffff;
+    unsigned long s2 = (adler >> 16) & 0xffff;
+    int k;
+
+    if (buf == Z_NULL) return 1L;
+
+    while (len > 0) {
+        k = len < NMAX ? len : NMAX;
+        len -= k;
+        while (k >= 16) {
+            DO16(buf);
+           buf += 16;
+            k -= 16;
+        }
+        if (k != 0) do {
+            s1 += *buf++;
+           s2 += s1;
+        } while (--k);
+        s1 %= BASE;
+        s2 %= BASE;
+    }
+    return (s2 << 16) | s1;
+}
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/aes/Makefile     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,59 @@
+# Makefile for KLIPS 3DES kernel code as a module    for 2.6 kernels
+#
+# Makefile for KLIPS kernel code as a module
+# Copyright (C) 2002-2004      Michael Richardson <mcr@xelerance.com>
+# 
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the
+# Free Software Foundation; either version 2 of the License, or (at your
+# option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+# for more details.
+#
+# RCSID $Id: Makefile.fs2_6,v 1.1.10.1 2005-08-12 16:10:05 ken Exp $
+#
+# Note! Dependencies are done automagically by 'make dep', which also
+# removes any old dependencies. DON'T put your own dependencies here
+# unless it's something special (ie not a .c file).
+#
+
+obj-$(CONFIG_KLIPS_ENC_AES) += ipsec_alg_aes.o
+obj-$(CONFIG_KLIPS_ENC_AES) += aes_xcbc_mac.o
+obj-$(CONFIG_KLIPS_ENC_AES) += aes_cbc.o
+
+ifeq ($(strip ${SUBARCH}),)
+SUBARCH:=${ARCH}
+endif
+
+# the assembly version expects frame pointers, which are
+# optional in many kernel builds. If you want speed, you should
+# probably use cryptoapi code instead.
+USEASSEMBLY=${SUBARCH}${CONFIG_FRAME_POINTER}
+ifeq (${USEASSEMBLY},i386y)
+obj-$(CONFIG_KLIPS_ENC_AES) += aes-i586.o
+else
+obj-$(CONFIG_KLIPS_ENC_AES) += aes.o
+endif
+
+
+#
+# $Log: Makefile.fs2_6,v $
+# Revision 1.1.10.1  2005-08-12 16:10:05  ken
+# do not use assembly code with there are no frame pointers
+#
+# Revision 1.2  2005/08/12 14:13:58  mcr
+#      do not use assembly code with there are no frame pointers,
+#      as it does not have the right linkages.
+#
+# Revision 1.1  2004/08/17 03:31:34  mcr
+#      klips 2.6 edits.
+#
+#
+# Local Variables:
+# compile-command: "(cd ../../.. && source umlsetup.sh && make -C ${POOLSPACE} module/ipsec.o)"
+# End Variables:
+#
+
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/aes/aes-i586.S     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,892 @@
+//
+// Copyright (c) 2001, Dr Brian Gladman <brg@gladman.uk.net>, Worcester, UK.
+// All rights reserved.
+//
+// TERMS
+//
+//  Redistribution and use in source and binary forms, with or without
+//  modification, are permitted subject to the following conditions:
+//
+//  1. Redistributions of source code must retain the above copyright
+//     notice, this list of conditions and the following disclaimer.
+//
+//  2. Redistributions in binary form must reproduce the above copyright
+//     notice, this list of conditions and the following disclaimer in the
+//     documentation and/or other materials provided with the distribution.
+//
+//  3. The copyright holder's name must not be used to endorse or promote
+//     any products derived from this software without his specific prior
+//     written permission.
+//
+//  This software is provided 'as is' with no express or implied warranties
+//  of correctness or fitness for purpose.
+
+// Modified by Jari Ruusu,  December 24 2001
+//  - Converted syntax to GNU CPP/assembler syntax
+//  - C programming interface converted back to "old" API
+//  - Minor portability cleanups and speed optimizations
+
+// An AES (Rijndael) implementation for the Pentium. This version only
+// implements the standard AES block length (128 bits, 16 bytes). This code
+// does not preserve the eax, ecx or edx registers or the artihmetic status
+// flags. However, the ebx, esi, edi, and ebp registers are preserved across
+// calls.
+
+// void aes_set_key(aes_context *cx, const unsigned char key[], const int key_len, const int f)
+// void aes_encrypt(const aes_context *cx, const unsigned char in_blk[], unsigned char out_blk[])
+// void aes_decrypt(const aes_context *cx, const unsigned char in_blk[], unsigned char out_blk[])
+
+#if defined(USE_UNDERLINE)
+# define aes_set_key _aes_set_key
+# define aes_encrypt _aes_encrypt
+# define aes_decrypt _aes_decrypt
+#endif
+#if !defined(ALIGN32BYTES)
+# define ALIGN32BYTES 32
+#endif
+
+       .file   "aes-i586.S"
+       .globl  aes_set_key
+       .globl  aes_encrypt
+       .globl  aes_decrypt
+
+#define tlen   1024    // length of each of 4 'xor' arrays (256 32-bit words)
+
+// offsets to parameters with one register pushed onto stack
+
+#define ctx    8       // AES context structure
+#define in_blk 12      // input byte array address parameter
+#define out_blk        16      // output byte array address parameter
+
+// offsets in context structure
+
+#define nkey   0       // key length, size 4
+#define nrnd   4       // number of rounds, size 4
+#define ekey   8       // encryption key schedule base address, size 256
+#define dkey   264     // decryption key schedule base address, size 256
+
+// This macro performs a forward encryption cycle. It is entered with
+// the first previous round column values in %eax, %ebx, %esi and %edi and
+// exits with the final values in the same registers.
+
+#define fwd_rnd(p1,p2)                  \
+       mov     %ebx,(%esp)             ;\
+       movzbl  %al,%edx                ;\
+       mov     %eax,%ecx               ;\
+       mov     p2(%ebp),%eax           ;\
+       mov     %edi,4(%esp)            ;\
+       mov     p2+12(%ebp),%edi        ;\
+       xor     p1(,%edx,4),%eax        ;\
+       movzbl  %ch,%edx                ;\
+       shr     $16,%ecx                ;\
+       mov     p2+4(%ebp),%ebx         ;\
+       xor     p1+tlen(,%edx,4),%edi   ;\
+       movzbl  %cl,%edx                ;\
+       movzbl  %ch,%ecx                ;\
+       xor     p1+3*tlen(,%ecx,4),%ebx ;\
+       mov     %esi,%ecx               ;\
+       mov     p1+2*tlen(,%edx,4),%esi ;\
+       movzbl  %cl,%edx                ;\
+       xor     p1(,%edx,4),%esi        ;\
+       movzbl  %ch,%edx                ;\
+       shr     $16,%ecx                ;\
+       xor     p1+tlen(,%edx,4),%ebx   ;\
+       movzbl  %cl,%edx                ;\
+       movzbl  %ch,%ecx                ;\
+       xor     p1+2*tlen(,%edx,4),%eax ;\
+       mov     (%esp),%edx             ;\
+       xor     p1+3*tlen(,%ecx,4),%edi ;\
+       movzbl  %dl,%ecx                ;\
+       xor     p2+8(%ebp),%esi         ;\
+       xor     p1(,%ecx,4),%ebx        ;\
+       movzbl  %dh,%ecx                ;\
+       shr     $16,%edx                ;\
+       xor     p1+tlen(,%ecx,4),%eax   ;\
+       movzbl  %dl,%ecx                ;\
+       movzbl  %dh,%edx                ;\
+       xor     p1+2*tlen(,%ecx,4),%edi ;\
+       mov     4(%esp),%ecx            ;\
+       xor     p1+3*tlen(,%edx,4),%esi ;\
+       movzbl  %cl,%edx                ;\
+       xor     p1(,%edx,4),%edi        ;\
+       movzbl  %ch,%edx                ;\
+       shr     $16,%ecx                ;\
+       xor     p1+tlen(,%edx,4),%esi   ;\
+       movzbl  %cl,%edx                ;\
+       movzbl  %ch,%ecx                ;\
+       xor     p1+2*tlen(,%edx,4),%ebx ;\
+       xor     p1+3*tlen(,%ecx,4),%eax
+
+// This macro performs an inverse encryption cycle. It is entered with
+// the first previous round column values in %eax, %ebx, %esi and %edi and
+// exits with the final values in the same registers.
+
+#define inv_rnd(p1,p2)                  \
+       movzbl  %al,%edx                ;\
+       mov     %ebx,(%esp)             ;\
+       mov     %eax,%ecx               ;\
+       mov     p2(%ebp),%eax           ;\
+       mov     %edi,4(%esp)            ;\
+       mov     p2+4(%ebp),%ebx         ;\
+       xor     p1(,%edx,4),%eax        ;\
+       movzbl  %ch,%edx                ;\
+       shr     $16,%ecx                ;\
+       mov     p2+12(%ebp),%edi        ;\
+       xor     p1+tlen(,%edx,4),%ebx   ;\
+       movzbl  %cl,%edx                ;\
+       movzbl  %ch,%ecx                ;\
+       xor     p1+3*tlen(,%ecx,4),%edi ;\
+       mov     %esi,%ecx               ;\
+       mov     p1+2*tlen(,%edx,4),%esi ;\
+       movzbl  %cl,%edx                ;\
+       xor     p1(,%edx,4),%esi        ;\
+       movzbl  %ch,%edx                ;\
+       shr     $16,%ecx                ;\
+       xor     p1+tlen(,%edx,4),%edi   ;\
+       movzbl  %cl,%edx                ;\
+       movzbl  %ch,%ecx                ;\
+       xor     p1+2*tlen(,%edx,4),%eax ;\
+       mov     (%esp),%edx             ;\
+       xor     p1+3*tlen(,%ecx,4),%ebx ;\
+       movzbl  %dl,%ecx                ;\
+       xor     p2+8(%ebp),%esi         ;\
+       xor     p1(,%ecx,4),%ebx        ;\
+       movzbl  %dh,%ecx                ;\
+       shr     $16,%edx                ;\
+       xor     p1+tlen(,%ecx,4),%esi   ;\
+       movzbl  %dl,%ecx                ;\
+       movzbl  %dh,%edx                ;\
+       xor     p1+2*tlen(,%ecx,4),%edi ;\
+       mov     4(%esp),%ecx            ;\
+       xor     p1+3*tlen(,%edx,4),%eax ;\
+       movzbl  %cl,%edx                ;\
+       xor     p1(,%edx,4),%edi        ;\
+       movzbl  %ch,%edx                ;\
+       shr     $16,%ecx                ;\
+       xor     p1+tlen(,%edx,4),%eax   ;\
+       movzbl  %cl,%edx                ;\
+       movzbl  %ch,%ecx                ;\
+       xor     p1+2*tlen(,%edx,4),%ebx ;\
+       xor     p1+3*tlen(,%ecx,4),%esi
+
+// AES (Rijndael) Encryption Subroutine
+
+       .text
+       .align  ALIGN32BYTES
+aes_encrypt:
+       push    %ebp
+       mov     ctx(%esp),%ebp          // pointer to context
+       mov     in_blk(%esp),%ecx
+       push    %ebx
+       push    %esi
+       push    %edi
+       mov     nrnd(%ebp),%edx         // number of rounds
+       lea     ekey+16(%ebp),%ebp      // key pointer
+
+// input four columns and xor in first round key
+
+       mov     (%ecx),%eax
+       mov     4(%ecx),%ebx
+       mov     8(%ecx),%esi
+       mov     12(%ecx),%edi
+       xor     -16(%ebp),%eax
+       xor     -12(%ebp),%ebx
+       xor     -8(%ebp),%esi
+       xor     -4(%ebp),%edi
+
+       sub     $8,%esp                 // space for register saves on stack
+
+       sub     $10,%edx
+       je      aes_15
+       add     $32,%ebp
+       sub     $2,%edx
+       je      aes_13
+       add     $32,%ebp
+
+       fwd_rnd(aes_ft_tab,-64)         // 14 rounds for 256-bit key
+       fwd_rnd(aes_ft_tab,-48)
+aes_13:        fwd_rnd(aes_ft_tab,-32)         // 12 rounds for 192-bit key
+       fwd_rnd(aes_ft_tab,-16)
+aes_15:        fwd_rnd(aes_ft_tab,0)           // 10 rounds for 128-bit key
+       fwd_rnd(aes_ft_tab,16)
+       fwd_rnd(aes_ft_tab,32)
+       fwd_rnd(aes_ft_tab,48)
+       fwd_rnd(aes_ft_tab,64)
+       fwd_rnd(aes_ft_tab,80)
+       fwd_rnd(aes_ft_tab,96)
+       fwd_rnd(aes_ft_tab,112)
+       fwd_rnd(aes_ft_tab,128)
+       fwd_rnd(aes_fl_tab,144)         // last round uses a different table
+
+// move final values to the output array.
+
+       mov     out_blk+20(%esp),%ebp
+       add     $8,%esp
+       mov     %eax,(%ebp)
+       mov     %ebx,4(%ebp)
+       mov     %esi,8(%ebp)
+       mov     %edi,12(%ebp)
+       pop     %edi
+       pop     %esi
+       pop     %ebx
+       pop     %ebp
+       ret
+
+
+// AES (Rijndael) Decryption Subroutine
+
+       .align  ALIGN32BYTES
+aes_decrypt:
+       push    %ebp
+       mov     ctx(%esp),%ebp          // pointer to context
+       mov     in_blk(%esp),%ecx
+       push    %ebx
+       push    %esi
+       push    %edi
+       mov     nrnd(%ebp),%edx         // number of rounds
+       lea     dkey+16(%ebp),%ebp      // key pointer
+
+// input four columns and xor in first round key
+
+       mov     (%ecx),%eax
+       mov     4(%ecx),%ebx
+       mov     8(%ecx),%esi
+       mov     12(%ecx),%edi
+       xor     -16(%ebp),%eax
+       xor     -12(%ebp),%ebx
+       xor     -8(%ebp),%esi
+       xor     -4(%ebp),%edi
+
+       sub     $8,%esp                 // space for register saves on stack
+
+       sub     $10,%edx
+       je      aes_25
+       add     $32,%ebp
+       sub     $2,%edx
+       je      aes_23
+       add     $32,%ebp
+
+       inv_rnd(aes_it_tab,-64)         // 14 rounds for 256-bit key
+       inv_rnd(aes_it_tab,-48)
+aes_23:        inv_rnd(aes_it_tab,-32)         // 12 rounds for 192-bit key
+       inv_rnd(aes_it_tab,-16)
+aes_25:        inv_rnd(aes_it_tab,0)           // 10 rounds for 128-bit key
+       inv_rnd(aes_it_tab,16)
+       inv_rnd(aes_it_tab,32)
+       inv_rnd(aes_it_tab,48)
+       inv_rnd(aes_it_tab,64)
+       inv_rnd(aes_it_tab,80)
+       inv_rnd(aes_it_tab,96)
+       inv_rnd(aes_it_tab,112)
+       inv_rnd(aes_it_tab,128)
+       inv_rnd(aes_il_tab,144)         // last round uses a different table
+
+// move final values to the output array.
+
+       mov     out_blk+20(%esp),%ebp
+       add     $8,%esp
+       mov     %eax,(%ebp)
+       mov     %ebx,4(%ebp)
+       mov     %esi,8(%ebp)
+       mov     %edi,12(%ebp)
+       pop     %edi
+       pop     %esi
+       pop     %ebx
+       pop     %ebp
+       ret
+
+// AES (Rijndael) Key Schedule Subroutine
+
+// input/output parameters
+
+#define aes_cx 12      // AES context
+#define in_key 16      // key input array address
+#define key_ln 20      // key length, bytes (16,24,32) or bits (128,192,256)
+#define ed_flg 24      // 0=create both encr/decr keys, 1=create encr key only
+
+// offsets for locals
+
+#define cnt    -4
+#define kpf    -8
+#define slen   8
+
+// This macro performs a column mixing operation on an input 32-bit
+// word to give a 32-bit result. It uses each of the 4 bytes in the
+// the input column to index 4 different tables of 256 32-bit words
+// that are xored together to form the output value.
+
+#define mix_col(p1)                     \
+       movzbl  %bl,%ecx                ;\
+       mov     p1(,%ecx,4),%eax        ;\
+       movzbl  %bh,%ecx                ;\
+       ror     $16,%ebx                ;\
+       xor     p1+tlen(,%ecx,4),%eax   ;\
+       movzbl  %bl,%ecx                ;\
+       xor     p1+2*tlen(,%ecx,4),%eax ;\
+       movzbl  %bh,%ecx                ;\
+       xor     p1+3*tlen(,%ecx,4),%eax
+
+// Key Schedule Macros
+
+#define ksc4(p1)                        \
+       rol     $24,%ebx                ;\
+       mix_col(aes_fl_tab)             ;\
+       ror     $8,%ebx                 ;\
+       xor     4*p1+aes_rcon_tab,%eax  ;\
+       xor     %eax,%esi               ;\
+       xor     %esi,%ebp               ;\
+       mov     %esi,16*p1(%edi)        ;\
+       mov     %ebp,16*p1+4(%edi)      ;\
+       xor     %ebp,%edx               ;\
+       xor     %edx,%ebx               ;\
+       mov     %edx,16*p1+8(%edi)      ;\
+       mov     %ebx,16*p1+12(%edi)
+
+#define ksc6(p1)                        \
+       rol     $24,%ebx                ;\
+       mix_col(aes_fl_tab)             ;\
+       ror     $8,%ebx                 ;\
+       xor     4*p1+aes_rcon_tab,%eax  ;\
+       xor     24*p1-24(%edi),%eax     ;\
+       mov     %eax,24*p1(%edi)        ;\
+       xor     24*p1-20(%edi),%eax     ;\
+       mov     %eax,24*p1+4(%edi)      ;\
+       xor     %eax,%esi               ;\
+       xor     %esi,%ebp               ;\
+       mov     %esi,24*p1+8(%edi)      ;\
+       mov     %ebp,24*p1+12(%edi)     ;\
+       xor     %ebp,%edx               ;\
+       xor     %edx,%ebx               ;\
+       mov     %edx,24*p1+16(%edi)     ;\
+       mov     %ebx,24*p1+20(%edi)
+
+#define ksc8(p1)                        \
+       rol     $24,%ebx                ;\
+       mix_col(aes_fl_tab)             ;\
+       ror     $8,%ebx                 ;\
+       xor     4*p1+aes_rcon_tab,%eax  ;\
+       xor     32*p1-32(%edi),%eax     ;\
+       mov     %eax,32*p1(%edi)        ;\
+       xor     32*p1-28(%edi),%eax     ;\
+       mov     %eax,32*p1+4(%edi)      ;\
+       xor     32*p1-24(%edi),%eax     ;\
+       mov     %eax,32*p1+8(%edi)      ;\
+       xor     32*p1-20(%edi),%eax     ;\
+       mov     %eax,32*p1+12(%edi)     ;\
+       push    %ebx                    ;\
+       mov     %eax,%ebx               ;\
+       mix_col(aes_fl_tab)             ;\
+       pop     %ebx                    ;\
+       xor     %eax,%esi               ;\
+       xor     %esi,%ebp               ;\
+       mov     %esi,32*p1+16(%edi)     ;\
+       mov     %ebp,32*p1+20(%edi)     ;\
+       xor     %ebp,%edx               ;\
+       xor     %edx,%ebx               ;\
+       mov     %edx,32*p1+24(%edi)     ;\
+       mov     %ebx,32*p1+28(%edi)
+
+       .align  ALIGN32BYTES
+aes_set_key:
+       pushfl
+       push    %ebp
+       mov     %esp,%ebp
+       sub     $slen,%esp
+       push    %ebx
+       push    %esi
+       push    %edi
+
+       mov     aes_cx(%ebp),%edx       // edx -> AES context
+
+       mov     key_ln(%ebp),%ecx       // key length
+       cmpl    $128,%ecx
+       jb      aes_30
+       shr     $3,%ecx
+aes_30:        cmpl    $32,%ecx
+       je      aes_32
+       cmpl    $24,%ecx
+       je      aes_32
+       mov     $16,%ecx
+aes_32:        shr     $2,%ecx
+       mov     %ecx,nkey(%edx)
+
+       lea     6(%ecx),%eax            // 10/12/14 for 4/6/8 32-bit key length
+       mov     %eax,nrnd(%edx)
+
+       mov     in_key(%ebp),%esi       // key input array
+       lea     ekey(%edx),%edi         // key position in AES context
+       cld
+       push    %ebp
+       mov     %ecx,%eax               // save key length in eax
+       rep ;   movsl                   // words in the key schedule
+       mov     -4(%esi),%ebx           // put some values in registers
+       mov     -8(%esi),%edx           // to allow faster code
+       mov     -12(%esi),%ebp
+       mov     -16(%esi),%esi
+
+       cmpl    $4,%eax                 // jump on key size
+       je      aes_36
+       cmpl    $6,%eax
+       je      aes_35
+
+       ksc8(0)
+       ksc8(1)
+       ksc8(2)
+       ksc8(3)
+       ksc8(4)
+       ksc8(5)
+       ksc8(6)
+       jmp     aes_37
+aes_35:        ksc6(0)
+       ksc6(1)
+       ksc6(2)
+       ksc6(3)
+       ksc6(4)
+       ksc6(5)
+       ksc6(6)
+       ksc6(7)
+       jmp     aes_37
+aes_36:        ksc4(0)
+       ksc4(1)
+       ksc4(2)
+       ksc4(3)
+       ksc4(4)
+       ksc4(5)
+       ksc4(6)
+       ksc4(7)
+       ksc4(8)
+       ksc4(9)
+aes_37:        pop     %ebp
+       mov     aes_cx(%ebp),%edx       // edx -> AES context
+       cmpl    $0,ed_flg(%ebp)
+       jne     aes_39
+
+// compile decryption key schedule from encryption schedule - reverse
+// order and do mix_column operation on round keys except first and last
+
+       mov     nrnd(%edx),%eax         // kt = cx->d_key + nc * cx->Nrnd
+       shl     $2,%eax
+       lea     dkey(%edx,%eax,4),%edi
+       lea     ekey(%edx),%esi         // kf = cx->e_key
+
+       movsl                           // copy first round key (unmodified)
+       movsl
+       movsl
+       movsl
+       sub     $32,%edi
+       movl    $1,cnt(%ebp)
+aes_38:                                        // do mix column on each column of
+       lodsl                           // each round key
+       mov     %eax,%ebx
+       mix_col(aes_im_tab)
+       stosl
+       lodsl
+       mov     %eax,%ebx
+       mix_col(aes_im_tab)
+       stosl
+       lodsl
+       mov     %eax,%ebx
+       mix_col(aes_im_tab)
+       stosl
+       lodsl
+       mov     %eax,%ebx
+       mix_col(aes_im_tab)
+       stosl
+       sub     $32,%edi
+
+       incl    cnt(%ebp)
+       mov     cnt(%ebp),%eax
+       cmp     nrnd(%edx),%eax
+       jb      aes_38
+
+       movsl                           // copy last round key (unmodified)
+       movsl
+       movsl
+       movsl
+aes_39:        pop     %edi
+       pop     %esi
+       pop     %ebx
+       mov     %ebp,%esp
+       pop     %ebp
+       popfl
+       ret
+
+
+// finite field multiplies by {02}, {04} and {08}
+
+#define f2(x)  ((x<<1)^(((x>>7)&1)*0x11b))
+#define f4(x)  ((x<<2)^(((x>>6)&1)*0x11b)^(((x>>6)&2)*0x11b))
+#define f8(x)  ((x<<3)^(((x>>5)&1)*0x11b)^(((x>>5)&2)*0x11b)^(((x>>5)&4)*0x11b))
+
+// finite field multiplies required in table generation
+
+#define f3(x)  (f2(x) ^ x)
+#define f9(x)  (f8(x) ^ x)
+#define fb(x)  (f8(x) ^ f2(x) ^ x)
+#define fd(x)  (f8(x) ^ f4(x) ^ x)
+#define fe(x)  (f8(x) ^ f4(x) ^ f2(x))
+
+// These defines generate the forward table entries
+
+#define u0(x)  ((f3(x) << 24) | (x << 16) | (x << 8) | f2(x))
+#define u1(x)  ((x << 24) | (x << 16) | (f2(x) << 8) | f3(x))
+#define u2(x)  ((x << 24) | (f2(x) << 16) | (f3(x) << 8) | x)
+#define u3(x)  ((f2(x) << 24) | (f3(x) << 16) | (x << 8) | x)
+
+// These defines generate the inverse table entries
+
+#define v0(x)  ((fb(x) << 24) | (fd(x) << 16) | (f9(x) << 8) | fe(x))
+#define v1(x)  ((fd(x) << 24) | (f9(x) << 16) | (fe(x) << 8) | fb(x))
+#define v2(x)  ((f9(x) << 24) | (fe(x) << 16) | (fb(x) << 8) | fd(x))
+#define v3(x)  ((fe(x) << 24) | (fb(x) << 16) | (fd(x) << 8) | f9(x))
+
+// These defines generate entries for the last round tables
+
+#define w0(x)  (x)
+#define w1(x)  (x <<  8)
+#define w2(x)  (x << 16)
+#define w3(x)  (x << 24)
+
+// macro to generate inverse mix column tables (needed for the key schedule)
+
+#define im_data0(p1) \
+       .long   p1(0x00),p1(0x01),p1(0x02),p1(0x03),p1(0x04),p1(0x05),p1(0x06),p1(0x07) ;\
+       .long   p1(0x08),p1(0x09),p1(0x0a),p1(0x0b),p1(0x0c),p1(0x0d),p1(0x0e),p1(0x0f) ;\
+       .long   p1(0x10),p1(0x11),p1(0x12),p1(0x13),p1(0x14),p1(0x15),p1(0x16),p1(0x17) ;\
+       .long   p1(0x18),p1(0x19),p1(0x1a),p1(0x1b),p1(0x1c),p1(0x1d),p1(0x1e),p1(0x1f)
+#define im_data1(p1) \
+       .long   p1(0x20),p1(0x21),p1(0x22),p1(0x23),p1(0x24),p1(0x25),p1(0x26),p1(0x27) ;\
+       .long   p1(0x28),p1(0x29),p1(0x2a),p1(0x2b),p1(0x2c),p1(0x2d),p1(0x2e),p1(0x2f) ;\
+       .long   p1(0x30),p1(0x31),p1(0x32),p1(0x33),p1(0x34),p1(0x35),p1(0x36),p1(0x37) ;\
+       .long   p1(0x38),p1(0x39),p1(0x3a),p1(0x3b),p1(0x3c),p1(0x3d),p1(0x3e),p1(0x3f)
+#define im_data2(p1) \
+       .long   p1(0x40),p1(0x41),p1(0x42),p1(0x43),p1(0x44),p1(0x45),p1(0x46),p1(0x47) ;\
+       .long   p1(0x48),p1(0x49),p1(0x4a),p1(0x4b),p1(0x4c),p1(0x4d),p1(0x4e),p1(0x4f) ;\
+       .long   p1(0x50),p1(0x51),p1(0x52),p1(0x53),p1(0x54),p1(0x55),p1(0x56),p1(0x57) ;\
+       .long   p1(0x58),p1(0x59),p1(0x5a),p1(0x5b),p1(0x5c),p1(0x5d),p1(0x5e),p1(0x5f)
+#define im_data3(p1) \
+       .long   p1(0x60),p1(0x61),p1(0x62),p1(0x63),p1(0x64),p1(0x65),p1(0x66),p1(0x67) ;\
+       .long   p1(0x68),p1(0x69),p1(0x6a),p1(0x6b),p1(0x6c),p1(0x6d),p1(0x6e),p1(0x6f) ;\
+       .long   p1(0x70),p1(0x71),p1(0x72),p1(0x73),p1(0x74),p1(0x75),p1(0x76),p1(0x77) ;\
+       .long   p1(0x78),p1(0x79),p1(0x7a),p1(0x7b),p1(0x7c),p1(0x7d),p1(0x7e),p1(0x7f)
+#define im_data4(p1) \
+       .long   p1(0x80),p1(0x81),p1(0x82),p1(0x83),p1(0x84),p1(0x85),p1(0x86),p1(0x87) ;\
+       .long   p1(0x88),p1(0x89),p1(0x8a),p1(0x8b),p1(0x8c),p1(0x8d),p1(0x8e),p1(0x8f) ;\
+       .long   p1(0x90),p1(0x91),p1(0x92),p1(0x93),p1(0x94),p1(0x95),p1(0x96),p1(0x97) ;\
+       .long   p1(0x98),p1(0x99),p1(0x9a),p1(0x9b),p1(0x9c),p1(0x9d),p1(0x9e),p1(0x9f)
+#define im_data5(p1) \
+       .long   p1(0xa0),p1(0xa1),p1(0xa2),p1(0xa3),p1(0xa4),p1(0xa5),p1(0xa6),p1(0xa7) ;\
+       .long   p1(0xa8),p1(0xa9),p1(0xaa),p1(0xab),p1(0xac),p1(0xad),p1(0xae),p1(0xaf) ;\
+       .long   p1(0xb0),p1(0xb1),p1(0xb2),p1(0xb3),p1(0xb4),p1(0xb5),p1(0xb6),p1(0xb7) ;\
+       .long   p1(0xb8),p1(0xb9),p1(0xba),p1(0xbb),p1(0xbc),p1(0xbd),p1(0xbe),p1(0xbf)
+#define im_data6(p1) \
+       .long   p1(0xc0),p1(0xc1),p1(0xc2),p1(0xc3),p1(0xc4),p1(0xc5),p1(0xc6),p1(0xc7) ;\
+       .long   p1(0xc8),p1(0xc9),p1(0xca),p1(0xcb),p1(0xcc),p1(0xcd),p1(0xce),p1(0xcf) ;\
+       .long   p1(0xd0),p1(0xd1),p1(0xd2),p1(0xd3),p1(0xd4),p1(0xd5),p1(0xd6),p1(0xd7) ;\
+       .long   p1(0xd8),p1(0xd9),p1(0xda),p1(0xdb),p1(0xdc),p1(0xdd),p1(0xde),p1(0xdf)
+#define im_data7(p1) \
+       .long   p1(0xe0),p1(0xe1),p1(0xe2),p1(0xe3),p1(0xe4),p1(0xe5),p1(0xe6),p1(0xe7) ;\
+       .long   p1(0xe8),p1(0xe9),p1(0xea),p1(0xeb),p1(0xec),p1(0xed),p1(0xee),p1(0xef) ;\
+       .long   p1(0xf0),p1(0xf1),p1(0xf2),p1(0xf3),p1(0xf4),p1(0xf5),p1(0xf6),p1(0xf7) ;\
+       .long   p1(0xf8),p1(0xf9),p1(0xfa),p1(0xfb),p1(0xfc),p1(0xfd),p1(0xfe),p1(0xff)
+
+// S-box data - 256 entries
+
+#define sb_data0(p1) \
+       .long   p1(0x63),p1(0x7c),p1(0x77),p1(0x7b),p1(0xf2),p1(0x6b),p1(0x6f),p1(0xc5) ;\
+       .long   p1(0x30),p1(0x01),p1(0x67),p1(0x2b),p1(0xfe),p1(0xd7),p1(0xab),p1(0x76) ;\
+       .long   p1(0xca),p1(0x82),p1(0xc9),p1(0x7d),p1(0xfa),p1(0x59),p1(0x47),p1(0xf0) ;\
+       .long   p1(0xad),p1(0xd4),p1(0xa2),p1(0xaf),p1(0x9c),p1(0xa4),p1(0x72),p1(0xc0)
+#define sb_data1(p1) \
+       .long   p1(0xb7),p1(0xfd),p1(0x93),p1(0x26),p1(0x36),p1(0x3f),p1(0xf7),p1(0xcc) ;\
+       .long   p1(0x34),p1(0xa5),p1(0xe5),p1(0xf1),p1(0x71),p1(0xd8),p1(0x31),p1(0x15) ;\
+       .long   p1(0x04),p1(0xc7),p1(0x23),p1(0xc3),p1(0x18),p1(0x96),p1(0x05),p1(0x9a) ;\
+       .long   p1(0x07),p1(0x12),p1(0x80),p1(0xe2),p1(0xeb),p1(0x27),p1(0xb2),p1(0x75)
+#define sb_data2(p1) \
+       .long   p1(0x09),p1(0x83),p1(0x2c),p1(0x1a),p1(0x1b),p1(0x6e),p1(0x5a),p1(0xa0) ;\
+       .long   p1(0x52),p1(0x3b),p1(0xd6),p1(0xb3),p1(0x29),p1(0xe3),p1(0x2f),p1(0x84) ;\
+       .long   p1(0x53),p1(0xd1),p1(0x00),p1(0xed),p1(0x20),p1(0xfc),p1(0xb1),p1(0x5b) ;\
+       .long   p1(0x6a),p1(0xcb),p1(0xbe),p1(0x39),p1(0x4a),p1(0x4c),p1(0x58),p1(0xcf)
+#define sb_data3(p1) \
+       .long   p1(0xd0),p1(0xef),p1(0xaa),p1(0xfb),p1(0x43),p1(0x4d),p1(0x33),p1(0x85) ;\
+       .long   p1(0x45),p1(0xf9),p1(0x02),p1(0x7f),p1(0x50),p1(0x3c),p1(0x9f),p1(0xa8) ;\
+       .long   p1(0x51),p1(0xa3),p1(0x40),p1(0x8f),p1(0x92),p1(0x9d),p1(0x38),p1(0xf5) ;\
+       .long   p1(0xbc),p1(0xb6),p1(0xda),p1(0x21),p1(0x10),p1(0xff),p1(0xf3),p1(0xd2)
+#define sb_data4(p1) \
+       .long   p1(0xcd),p1(0x0c),p1(0x13),p1(0xec),p1(0x5f),p1(0x97),p1(0x44),p1(0x17) ;\
+       .long   p1(0xc4),p1(0xa7),p1(0x7e),p1(0x3d),p1(0x64),p1(0x5d),p1(0x19),p1(0x73) ;\
+       .long   p1(0x60),p1(0x81),p1(0x4f),p1(0xdc),p1(0x22),p1(0x2a),p1(0x90),p1(0x88) ;\
+       .long   p1(0x46),p1(0xee),p1(0xb8),p1(0x14),p1(0xde),p1(0x5e),p1(0x0b),p1(0xdb)
+#define sb_data5(p1) \
+       .long   p1(0xe0),p1(0x32),p1(0x3a),p1(0x0a),p1(0x49),p1(0x06),p1(0x24),p1(0x5c) ;\
+       .long   p1(0xc2),p1(0xd3),p1(0xac),p1(0x62),p1(0x91),p1(0x95),p1(0xe4),p1(0x79) ;\
+       .long   p1(0xe7),p1(0xc8),p1(0x37),p1(0x6d),p1(0x8d),p1(0xd5),p1(0x4e),p1(0xa9) ;\
+       .long   p1(0x6c),p1(0x56),p1(0xf4),p1(0xea),p1(0x65),p1(0x7a),p1(0xae),p1(0x08)
+#define sb_data6(p1) \
+       .long   p1(0xba),p1(0x78),p1(0x25),p1(0x2e),p1(0x1c),p1(0xa6),p1(0xb4),p1(0xc6) ;\
+       .long   p1(0xe8),p1(0xdd),p1(0x74),p1(0x1f),p1(0x4b),p1(0xbd),p1(0x8b),p1(0x8a) ;\
+       .long   p1(0x70),p1(0x3e),p1(0xb5),p1(0x66),p1(0x48),p1(0x03),p1(0xf6),p1(0x0e) ;\
+       .long   p1(0x61),p1(0x35),p1(0x57),p1(0xb9),p1(0x86),p1(0xc1),p1(0x1d),p1(0x9e)
+#define sb_data7(p1) \
+       .long   p1(0xe1),p1(0xf8),p1(0x98),p1(0x11),p1(0x69),p1(0xd9),p1(0x8e),p1(0x94) ;\
+       .long   p1(0x9b),p1(0x1e),p1(0x87),p1(0xe9),p1(0xce),p1(0x55),p1(0x28),p1(0xdf) ;\
+       .long   p1(0x8c),p1(0xa1),p1(0x89),p1(0x0d),p1(0xbf),p1(0xe6),p1(0x42),p1(0x68) ;\
+       .long   p1(0x41),p1(0x99),p1(0x2d),p1(0x0f),p1(0xb0),p1(0x54),p1(0xbb),p1(0x16)
+
+// Inverse S-box data - 256 entries
+
+#define ib_data0(p1) \
+       .long   p1(0x52),p1(0x09),p1(0x6a),p1(0xd5),p1(0x30),p1(0x36),p1(0xa5),p1(0x38) ;\
+       .long   p1(0xbf),p1(0x40),p1(0xa3),p1(0x9e),p1(0x81),p1(0xf3),p1(0xd7),p1(0xfb) ;\
+       .long   p1(0x7c),p1(0xe3),p1(0x39),p1(0x82),p1(0x9b),p1(0x2f),p1(0xff),p1(0x87) ;\
+       .long   p1(0x34),p1(0x8e),p1(0x43),p1(0x44),p1(0xc4),p1(0xde),p1(0xe9),p1(0xcb)
+#define ib_data1(p1) \
+       .long   p1(0x54),p1(0x7b),p1(0x94),p1(0x32),p1(0xa6),p1(0xc2),p1(0x23),p1(0x3d) ;\
+       .long   p1(0xee),p1(0x4c),p1(0x95),p1(0x0b),p1(0x42),p1(0xfa),p1(0xc3),p1(0x4e) ;\
+       .long   p1(0x08),p1(0x2e),p1(0xa1),p1(0x66),p1(0x28),p1(0xd9),p1(0x24),p1(0xb2) ;\
+       .long   p1(0x76),p1(0x5b),p1(0xa2),p1(0x49),p1(0x6d),p1(0x8b),p1(0xd1),p1(0x25)
+#define ib_data2(p1) \
+       .long   p1(0x72),p1(0xf8),p1(0xf6),p1(0x64),p1(0x86),p1(0x68),p1(0x98),p1(0x16) ;\
+       .long   p1(0xd4),p1(0xa4),p1(0x5c),p1(0xcc),p1(0x5d),p1(0x65),p1(0xb6),p1(0x92) ;\
+       .long   p1(0x6c),p1(0x70),p1(0x48),p1(0x50),p1(0xfd),p1(0xed),p1(0xb9),p1(0xda) ;\
+       .long   p1(0x5e),p1(0x15),p1(0x46),p1(0x57),p1(0xa7),p1(0x8d),p1(0x9d),p1(0x84)
+#define ib_data3(p1) \
+       .long   p1(0x90),p1(0xd8),p1(0xab),p1(0x00),p1(0x8c),p1(0xbc),p1(0xd3),p1(0x0a) ;\
+       .long   p1(0xf7),p1(0xe4),p1(0x58),p1(0x05),p1(0xb8),p1(0xb3),p1(0x45),p1(0x06) ;\
+       .long   p1(0xd0),p1(0x2c),p1(0x1e),p1(0x8f),p1(0xca),p1(0x3f),p1(0x0f),p1(0x02) ;\
+       .long   p1(0xc1),p1(0xaf),p1(0xbd),p1(0x03),p1(0x01),p1(0x13),p1(0x8a),p1(0x6b)
+#define ib_data4(p1) \
+       .long   p1(0x3a),p1(0x91),p1(0x11),p1(0x41),p1(0x4f),p1(0x67),p1(0xdc),p1(0xea) ;\
+       .long   p1(0x97),p1(0xf2),p1(0xcf),p1(0xce),p1(0xf0),p1(0xb4),p1(0xe6),p1(0x73) ;\
+       .long   p1(0x96),p1(0xac),p1(0x74),p1(0x22),p1(0xe7),p1(0xad),p1(0x35),p1(0x85) ;\
+       .long   p1(0xe2),p1(0xf9),p1(0x37),p1(0xe8),p1(0x1c),p1(0x75),p1(0xdf),p1(0x6e)
+#define ib_data5(p1) \
+       .long   p1(0x47),p1(0xf1),p1(0x1a),p1(0x71),p1(0x1d),p1(0x29),p1(0xc5),p1(0x89) ;\
+       .long   p1(0x6f),p1(0xb7),p1(0x62),p1(0x0e),p1(0xaa),p1(0x18),p1(0xbe),p1(0x1b) ;\
+       .long   p1(0xfc),p1(0x56),p1(0x3e),p1(0x4b),p1(0xc6),p1(0xd2),p1(0x79),p1(0x20) ;\
+       .long   p1(0x9a),p1(0xdb),p1(0xc0),p1(0xfe),p1(0x78),p1(0xcd),p1(0x5a),p1(0xf4)
+#define ib_data6(p1) \
+       .long   p1(0x1f),p1(0xdd),p1(0xa8),p1(0x33),p1(0x88),p1(0x07),p1(0xc7),p1(0x31) ;\
+       .long   p1(0xb1),p1(0x12),p1(0x10),p1(0x59),p1(0x27),p1(0x80),p1(0xec),p1(0x5f) ;\
+       .long   p1(0x60),p1(0x51),p1(0x7f),p1(0xa9),p1(0x19),p1(0xb5),p1(0x4a),p1(0x0d) ;\
+       .long   p1(0x2d),p1(0xe5),p1(0x7a),p1(0x9f),p1(0x93),p1(0xc9),p1(0x9c),p1(0xef)
+#define ib_data7(p1) \
+       .long   p1(0xa0),p1(0xe0),p1(0x3b),p1(0x4d),p1(0xae),p1(0x2a),p1(0xf5),p1(0xb0) ;\
+       .long   p1(0xc8),p1(0xeb),p1(0xbb),p1(0x3c),p1(0x83),p1(0x53),p1(0x99),p1(0x61) ;\
+       .long   p1(0x17),p1(0x2b),p1(0x04),p1(0x7e),p1(0xba),p1(0x77),p1(0xd6),p1(0x26) ;\
+       .long   p1(0xe1),p1(0x69),p1(0x14),p1(0x63),p1(0x55),p1(0x21),p1(0x0c),p1(0x7d)
+
+// The rcon_table (needed for the key schedule)
+//
+// Here is original Dr Brian Gladman's source code:
+//     _rcon_tab:
+//     %assign x   1
+//     %rep 29
+//         dd  x
+//     %assign x f2(x)
+//     %endrep
+//
+// Here is precomputed output (it's more portable this way):
+
+       .align  ALIGN32BYTES
+aes_rcon_tab:
+       .long   0x01,0x02,0x04,0x08,0x10,0x20,0x40,0x80
+       .long   0x1b,0x36,0x6c,0xd8,0xab,0x4d,0x9a,0x2f
+       .long   0x5e,0xbc,0x63,0xc6,0x97,0x35,0x6a,0xd4
+       .long   0xb3,0x7d,0xfa,0xef,0xc5
+
+// The forward xor tables
+
+       .align  ALIGN32BYTES
+aes_ft_tab:
+       sb_data0(u0)
+       sb_data1(u0)
+       sb_data2(u0)
+       sb_data3(u0)
+       sb_data4(u0)
+       sb_data5(u0)
+       sb_data6(u0)
+       sb_data7(u0)
+
+       sb_data0(u1)
+       sb_data1(u1)
+       sb_data2(u1)
+       sb_data3(u1)
+       sb_data4(u1)
+       sb_data5(u1)
+       sb_data6(u1)
+       sb_data7(u1)
+
+       sb_data0(u2)
+       sb_data1(u2)
+       sb_data2(u2)
+       sb_data3(u2)
+       sb_data4(u2)
+       sb_data5(u2)
+       sb_data6(u2)
+       sb_data7(u2)
+
+       sb_data0(u3)
+       sb_data1(u3)
+       sb_data2(u3)
+       sb_data3(u3)
+       sb_data4(u3)
+       sb_data5(u3)
+       sb_data6(u3)
+       sb_data7(u3)
+
+       .align  ALIGN32BYTES
+aes_fl_tab:
+       sb_data0(w0)
+       sb_data1(w0)
+       sb_data2(w0)
+       sb_data3(w0)
+       sb_data4(w0)
+       sb_data5(w0)
+       sb_data6(w0)
+       sb_data7(w0)
+
+       sb_data0(w1)
+       sb_data1(w1)
+       sb_data2(w1)
+       sb_data3(w1)
+       sb_data4(w1)
+       sb_data5(w1)
+       sb_data6(w1)
+       sb_data7(w1)
+
+       sb_data0(w2)
+       sb_data1(w2)
+       sb_data2(w2)
+       sb_data3(w2)
+       sb_data4(w2)
+       sb_data5(w2)
+       sb_data6(w2)
+       sb_data7(w2)
+
+       sb_data0(w3)
+       sb_data1(w3)
+       sb_data2(w3)
+       sb_data3(w3)
+       sb_data4(w3)
+       sb_data5(w3)
+       sb_data6(w3)
+       sb_data7(w3)
+
+// The inverse xor tables
+
+       .align  ALIGN32BYTES
+aes_it_tab:
+       ib_data0(v0)
+       ib_data1(v0)
+       ib_data2(v0)
+       ib_data3(v0)
+       ib_data4(v0)
+       ib_data5(v0)
+       ib_data6(v0)
+       ib_data7(v0)
+
+       ib_data0(v1)
+       ib_data1(v1)
+       ib_data2(v1)
+       ib_data3(v1)
+       ib_data4(v1)
+       ib_data5(v1)
+       ib_data6(v1)
+       ib_data7(v1)
+
+       ib_data0(v2)
+       ib_data1(v2)
+       ib_data2(v2)
+       ib_data3(v2)
+       ib_data4(v2)
+       ib_data5(v2)
+       ib_data6(v2)
+       ib_data7(v2)
+
+       ib_data0(v3)
+       ib_data1(v3)
+       ib_data2(v3)
+       ib_data3(v3)
+       ib_data4(v3)
+       ib_data5(v3)
+       ib_data6(v3)
+       ib_data7(v3)
+
+       .align  ALIGN32BYTES
+aes_il_tab:
+       ib_data0(w0)
+       ib_data1(w0)
+       ib_data2(w0)
+       ib_data3(w0)
+       ib_data4(w0)
+       ib_data5(w0)
+       ib_data6(w0)
+       ib_data7(w0)
+
+       ib_data0(w1)
+       ib_data1(w1)
+       ib_data2(w1)
+       ib_data3(w1)
+       ib_data4(w1)
+       ib_data5(w1)
+       ib_data6(w1)
+       ib_data7(w1)
+
+       ib_data0(w2)
+       ib_data1(w2)
+       ib_data2(w2)
+       ib_data3(w2)
+       ib_data4(w2)
+       ib_data5(w2)
+       ib_data6(w2)
+       ib_data7(w2)
+
+       ib_data0(w3)
+       ib_data1(w3)
+       ib_data2(w3)
+       ib_data3(w3)
+       ib_data4(w3)
+       ib_data5(w3)
+       ib_data6(w3)
+       ib_data7(w3)
+
+// The inverse mix column tables
+
+       .align  ALIGN32BYTES
+aes_im_tab:
+       im_data0(v0)
+       im_data1(v0)
+       im_data2(v0)
+       im_data3(v0)
+       im_data4(v0)
+       im_data5(v0)
+       im_data6(v0)
+       im_data7(v0)
+
+       im_data0(v1)
+       im_data1(v1)
+       im_data2(v1)
+       im_data3(v1)
+       im_data4(v1)
+       im_data5(v1)
+       im_data6(v1)
+       im_data7(v1)
+
+       im_data0(v2)
+       im_data1(v2)
+       im_data2(v2)
+       im_data3(v2)
+       im_data4(v2)
+       im_data5(v2)
+       im_data6(v2)
+       im_data7(v2)
+
+       im_data0(v3)
+       im_data1(v3)
+       im_data2(v3)
+       im_data3(v3)
+       im_data4(v3)
+       im_data5(v3)
+       im_data6(v3)
+       im_data7(v3)
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/aes/aes.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,1415 @@
+// I retain copyright in this code but I encourage its free use provided
+// that I don't carry any responsibility for the results. I am especially 
+// happy to see it used in free and open source software. If you do use 
+// it I would appreciate an acknowledgement of its origin in the code or
+// the product that results and I would also appreciate knowing a little
+// about the use to which it is being put. I am grateful to Frank Yellin
+// for some ideas that are used in this implementation.
+//
+// Dr B. R. Gladman <brg@gladman.uk.net> 6th April 2001.
+//
+// This is an implementation of the AES encryption algorithm (Rijndael)
+// designed by Joan Daemen and Vincent Rijmen. This version is designed
+// to provide both fixed and dynamic block and key lengths and can also 
+// run with either big or little endian internal byte order (see aes.h). 
+// It inputs block and key lengths in bytes with the legal values being 
+// 16, 24 and 32.
+
+/*
+ * Modified by Jari Ruusu,  May 1 2001
+ *  - Fixed some compile warnings, code was ok but gcc warned anyway.
+ *  - Changed basic types: byte -> unsigned char, word -> u_int32_t
+ *  - Major name space cleanup: Names visible to outside now begin
+ *    with "aes_" or "AES_". A lot of stuff moved from aes.h to aes.c
+ *  - Removed C++ and DLL support as part of name space cleanup.
+ *  - Eliminated unnecessary recomputation of tables. (actual bug fix)
+ *  - Merged precomputed constant tables to aes.c file.
+ *  - Removed data alignment restrictions for portability reasons.
+ *  - Made block and key lengths accept bit count (128/192/256)
+ *    as well byte count (16/24/32).
+ *  - Removed all error checks. This change also eliminated the need
+ *    to preinitialize the context struct to zero.
+ *  - Removed some totally unused constants.
+ */
+
+#include "crypto/aes.h"
+
+// CONFIGURATION OPTIONS (see also aes.h)
+//
+// 1.  Define UNROLL for full loop unrolling in encryption and decryption.
+// 2.  Define PARTIAL_UNROLL to unroll two loops in encryption and decryption.
+// 3.  Define FIXED_TABLES for compiled rather than dynamic tables.
+// 4.  Define FF_TABLES to use tables for field multiplies and inverses.
+//     Do not enable this without understanding stack space requirements.
+// 5.  Define ARRAYS to use arrays to hold the local state block. If this
+//     is not defined, individually declared 32-bit words are used.
+// 6.  Define FAST_VARIABLE if a high speed variable block implementation
+//     is needed (essentially three separate fixed block size code sequences)
+// 7.  Define either ONE_TABLE or FOUR_TABLES for a fast table driven 
+//     version using 1 table (2 kbytes of table space) or 4 tables (8
+//     kbytes of table space) for higher speed.
+// 8.  Define either ONE_LR_TABLE or FOUR_LR_TABLES for a further speed 
+//     increase by using tables for the last rounds but with more table
+//     space (2 or 8 kbytes extra).
+// 9.  If neither ONE_TABLE nor FOUR_TABLES is defined, a compact but 
+//     slower version is provided.
+// 10. If fast decryption key scheduling is needed define ONE_IM_TABLE
+//     or FOUR_IM_TABLES for higher speed (2 or 8 kbytes extra).
+
+#define UNROLL
+//#define PARTIAL_UNROLL
+
+#define FIXED_TABLES
+//#define FF_TABLES
+//#define ARRAYS
+#define FAST_VARIABLE
+
+//#define ONE_TABLE
+#define FOUR_TABLES
+
+//#define ONE_LR_TABLE
+#define FOUR_LR_TABLES
+
+//#define ONE_IM_TABLE
+#define FOUR_IM_TABLES
+
+#if defined(UNROLL) && defined (PARTIAL_UNROLL)
+#error both UNROLL and PARTIAL_UNROLL are defined
+#endif
+
+#if defined(ONE_TABLE) && defined (FOUR_TABLES)
+#error both ONE_TABLE and FOUR_TABLES are defined
+#endif
+
+#if defined(ONE_LR_TABLE) && defined (FOUR_LR_TABLES)
+#error both ONE_LR_TABLE and FOUR_LR_TABLES are defined
+#endif
+
+#if defined(ONE_IM_TABLE) && defined (FOUR_IM_TABLES)
+#error both ONE_IM_TABLE and FOUR_IM_TABLES are defined
+#endif
+
+#if defined(AES_BLOCK_SIZE) && AES_BLOCK_SIZE != 16 && AES_BLOCK_SIZE != 24 && AES_BLOCK_SIZE != 32
+#error an illegal block size has been specified
+#endif  
+
+// upr(x,n): rotates bytes within words by n positions, moving bytes 
+// to higher index positions with wrap around into low positions
+// ups(x,n): moves bytes by n positions to higher index positions in 
+// words but without wrap around
+// bval(x,n): extracts a byte from a word
+
+#define upr(x,n)        (((x) << 8 * (n)) | ((x) >> (32 - 8 * (n))))
+#define ups(x,n)        ((x) << 8 * (n))
+#define bval(x,n)       ((unsigned char)((x) >> 8 * (n)))
+#define bytes2word(b0, b1, b2, b3)  \
+        ((u_int32_t)(b3) << 24 | (u_int32_t)(b2) << 16 | (u_int32_t)(b1) << 8 | (b0))
+
+
+/* little endian processor without data alignment restrictions: AES_LE_OK */
+/* original code: i386 */
+#if defined(i386) || defined(_I386) || defined(__i386__) || defined(__i386) 
+#define        AES_LE_OK 1
+/* added (tested): alpha  --jjo */
+#elif defined(__alpha__)|| defined (__alpha)
+#define AES_LE_OK 1
+/* added (tested): ia64  --jjo */
+#elif defined(__ia64__)|| defined (__ia64)
+#define AES_LE_OK 1
+#endif
+
+#ifdef AES_LE_OK
+/* little endian processor without data alignment restrictions */
+#define word_in(x)      *(u_int32_t*)(x)
+#define const_word_in(x)      *(const u_int32_t*)(x)
+#define word_out(x,v)   *(u_int32_t*)(x) = (v)
+#define const_word_out(x,v)   *(const u_int32_t*)(x) = (v)
+#else
+/* slower but generic big endian or with data alignment restrictions */
+/* some additional "const" touches to stop "gcc -Wcast-qual" complains --jjo */
+#define word_in(x)      ((u_int32_t)(((unsigned char *)(x))[0])|((u_int32_t)(((unsigned char *)(x))[1])<<8)|((u_int32_t)(((unsigned char *)(x))[2])<<16)|((u_int32_t)(((unsigned char *)(x))[3])<<24))
+#define const_word_in(x)      ((const u_int32_t)(((const unsigned char *)(x))[0])|((const u_int32_t)(((const unsigned char *)(x))[1])<<8)|((const u_int32_t)(((const unsigned char *)(x))[2])<<16)|((const u_int32_t)(((const unsigned char *)(x))[3])<<24))
+#define word_out(x,v)   ((unsigned char *)(x))[0]=(v),((unsigned char *)(x))[1]=((v)>>8),((unsigned char *)(x))[2]=((v)>>16),((unsigned char *)(x))[3]=((v)>>24)
+#define const_word_out(x,v)   ((const unsigned char *)(x))[0]=(v),((const unsigned char *)(x))[1]=((v)>>8),((const unsigned char *)(x))[2]=((v)>>16),((const unsigned char *)(x))[3]=((v)>>24)
+#endif
+
+// Disable at least some poor combinations of options
+
+#if !defined(ONE_TABLE) && !defined(FOUR_TABLES)
+#define FIXED_TABLES
+#undef  UNROLL
+#undef  ONE_LR_TABLE
+#undef  FOUR_LR_TABLES
+#undef  ONE_IM_TABLE
+#undef  FOUR_IM_TABLES
+#elif !defined(FOUR_TABLES)
+#ifdef  FOUR_LR_TABLES
+#undef  FOUR_LR_TABLES
+#define ONE_LR_TABLE
+#endif
+#ifdef  FOUR_IM_TABLES
+#undef  FOUR_IM_TABLES
+#define ONE_IM_TABLE
+#endif
+#elif !defined(AES_BLOCK_SIZE)
+#if defined(UNROLL)
+#define PARTIAL_UNROLL
+#undef UNROLL
+#endif
+#endif
+
+// the finite field modular polynomial and elements
+
+#define ff_poly 0x011b
+#define ff_hi   0x80
+
+// multiply four bytes in GF(2^8) by 'x' {02} in parallel
+
+#define m1  0x80808080
+#define m2  0x7f7f7f7f
+#define m3  0x0000001b
+#define FFmulX(x)  ((((x) & m2) << 1) ^ ((((x) & m1) >> 7) * m3))
+
+// The following defines provide alternative definitions of FFmulX that might
+// give improved performance if a fast 32-bit multiply is not available. Note
+// that a temporary variable u needs to be defined where FFmulX is used.
+
+// #define FFmulX(x) (u = (x) & m1, u |= (u >> 1), ((x) & m2) << 1) ^ ((u >> 3) | (u >> 6)) 
+// #define m4  0x1b1b1b1b
+// #define FFmulX(x) (u = (x) & m1, ((x) & m2) << 1) ^ ((u - (u >> 7)) & m4) 
+
+// perform column mix operation on four bytes in parallel
+
+#define fwd_mcol(x) (f2 = FFmulX(x), f2 ^ upr(x ^ f2,3) ^ upr(x,2) ^ upr(x,1))
+
+#if defined(FIXED_TABLES)
+
+// the S-Box table
+
+static const unsigned char s_box[256] =
+{
+    0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5,
+    0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76,
+    0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0,
+    0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0,
+    0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc,
+    0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15,
+    0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a,
+    0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75,
+    0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0,
+    0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84,
+    0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b,
+    0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf,
+    0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85,
+    0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8,
+    0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5,
+    0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2,
+    0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17,
+    0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73,
+    0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88,
+    0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb,
+    0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c,
+    0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79,
+    0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9,
+    0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08,
+    0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6,
+    0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a,
+    0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e,
+    0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e,
+    0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94,
+    0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf,
+    0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68,
+    0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16
+};
+
+// the inverse S-Box table
+
+static const unsigned char inv_s_box[256] =
+{
+    0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38,
+    0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb,
+    0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87,
+    0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb,
+    0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d,
+    0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e,
+    0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2,
+    0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25,
+    0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16,
+    0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92,
+    0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda,
+    0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84,
+    0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a,
+    0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06,
+    0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02,
+    0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b,
+    0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea,
+    0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73,
+    0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85,
+    0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e,
+    0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89,
+    0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b,
+    0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20,
+    0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4,
+    0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31,
+    0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f,
+    0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d,
+    0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef,
+    0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0,
+    0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61,
+    0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26,
+    0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d
+};
+
+#define w0(p)          0x000000##p
+
+// Number of elements required in this table for different
+// block and key lengths is:
+//
+// Nk =      4  6  8
+//        ----------
+// Nb = 4 | 10  8  7
+//      6 | 19 12 11
+//      8 | 29 19 14
+//
+// this table can be a table of bytes if the key schedule
+// code is adjusted accordingly
+
+static const u_int32_t rcon_tab[29] =
+{
+    w0(01), w0(02), w0(04), w0(08),
+    w0(10), w0(20), w0(40), w0(80),
+    w0(1b), w0(36), w0(6c), w0(d8),
+    w0(ab), w0(4d), w0(9a), w0(2f),
+    w0(5e), w0(bc), w0(63), w0(c6),
+    w0(97), w0(35), w0(6a), w0(d4),
+    w0(b3), w0(7d), w0(fa), w0(ef),
+    w0(c5)
+};
+
+#undef  w0
+
+#define r0(p,q,r,s) 0x##p##q##r##s
+#define r1(p,q,r,s) 0x##q##r##s##p
+#define r2(p,q,r,s) 0x##r##s##p##q
+#define r3(p,q,r,s) 0x##s##p##q##r
+#define w0(p)          0x000000##p
+#define w1(p)        0x0000##p##00
+#define w2(p)        0x00##p##0000
+#define w3(p)        0x##p##000000
+
+#if defined(FIXED_TABLES) && (defined(ONE_TABLE) || defined(FOUR_TABLES)) 
+
+//  data for forward tables (other than last round)
+
+#define f_table \
+    r(a5,63,63,c6), r(84,7c,7c,f8), r(99,77,77,ee), r(8d,7b,7b,f6),\
+    r(0d,f2,f2,ff), r(bd,6b,6b,d6), r(b1,6f,6f,de), r(54,c5,c5,91),\
+    r(50,30,30,60), r(03,01,01,02), r(a9,67,67,ce), r(7d,2b,2b,56),\
+    r(19,fe,fe,e7), r(62,d7,d7,b5), r(e6,ab,ab,4d), r(9a,76,76,ec),\
+    r(45,ca,ca,8f), r(9d,82,82,1f), r(40,c9,c9,89), r(87,7d,7d,fa),\
+    r(15,fa,fa,ef), r(eb,59,59,b2), r(c9,47,47,8e), r(0b,f0,f0,fb),\
+    r(ec,ad,ad,41), r(67,d4,d4,b3), r(fd,a2,a2,5f), r(ea,af,af,45),\
+    r(bf,9c,9c,23), r(f7,a4,a4,53), r(96,72,72,e4), r(5b,c0,c0,9b),\
+    r(c2,b7,b7,75), r(1c,fd,fd,e1), r(ae,93,93,3d), r(6a,26,26,4c),\
+    r(5a,36,36,6c), r(41,3f,3f,7e), r(02,f7,f7,f5), r(4f,cc,cc,83),\
+    r(5c,34,34,68), r(f4,a5,a5,51), r(34,e5,e5,d1), r(08,f1,f1,f9),\
+    r(93,71,71,e2), r(73,d8,d8,ab), r(53,31,31,62), r(3f,15,15,2a),\
+    r(0c,04,04,08), r(52,c7,c7,95), r(65,23,23,46), r(5e,c3,c3,9d),\
+    r(28,18,18,30), r(a1,96,96,37), r(0f,05,05,0a), r(b5,9a,9a,2f),\
+    r(09,07,07,0e), r(36,12,12,24), r(9b,80,80,1b), r(3d,e2,e2,df),\
+    r(26,eb,eb,cd), r(69,27,27,4e), r(cd,b2,b2,7f), r(9f,75,75,ea),\
+    r(1b,09,09,12), r(9e,83,83,1d), r(74,2c,2c,58), r(2e,1a,1a,34),\
+    r(2d,1b,1b,36), r(b2,6e,6e,dc), r(ee,5a,5a,b4), r(fb,a0,a0,5b),\
+    r(f6,52,52,a4), r(4d,3b,3b,76), r(61,d6,d6,b7), r(ce,b3,b3,7d),\
+    r(7b,29,29,52), r(3e,e3,e3,dd), r(71,2f,2f,5e), r(97,84,84,13),\
+    r(f5,53,53,a6), r(68,d1,d1,b9), r(00,00,00,00), r(2c,ed,ed,c1),\
+    r(60,20,20,40), r(1f,fc,fc,e3), r(c8,b1,b1,79), r(ed,5b,5b,b6),\
+    r(be,6a,6a,d4), r(46,cb,cb,8d), r(d9,be,be,67), r(4b,39,39,72),\
+    r(de,4a,4a,94), r(d4,4c,4c,98), r(e8,58,58,b0), r(4a,cf,cf,85),\
+    r(6b,d0,d0,bb), r(2a,ef,ef,c5), r(e5,aa,aa,4f), r(16,fb,fb,ed),\
+    r(c5,43,43,86), r(d7,4d,4d,9a), r(55,33,33,66), r(94,85,85,11),\
+    r(cf,45,45,8a), r(10,f9,f9,e9), r(06,02,02,04), r(81,7f,7f,fe),\
+    r(f0,50,50,a0), r(44,3c,3c,78), r(ba,9f,9f,25), r(e3,a8,a8,4b),\
+    r(f3,51,51,a2), r(fe,a3,a3,5d), r(c0,40,40,80), r(8a,8f,8f,05),\
+    r(ad,92,92,3f), r(bc,9d,9d,21), r(48,38,38,70), r(04,f5,f5,f1),\
+    r(df,bc,bc,63), r(c1,b6,b6,77), r(75,da,da,af), r(63,21,21,42),\
+    r(30,10,10,20), r(1a,ff,ff,e5), r(0e,f3,f3,fd), r(6d,d2,d2,bf),\
+    r(4c,cd,cd,81), r(14,0c,0c,18), r(35,13,13,26), r(2f,ec,ec,c3),\
+    r(e1,5f,5f,be), r(a2,97,97,35), r(cc,44,44,88), r(39,17,17,2e),\
+    r(57,c4,c4,93), r(f2,a7,a7,55), r(82,7e,7e,fc), r(47,3d,3d,7a),\
+    r(ac,64,64,c8), r(e7,5d,5d,ba), r(2b,19,19,32), r(95,73,73,e6),\
+    r(a0,60,60,c0), r(98,81,81,19), r(d1,4f,4f,9e), r(7f,dc,dc,a3),\
+    r(66,22,22,44), r(7e,2a,2a,54), r(ab,90,90,3b), r(83,88,88,0b),\
+    r(ca,46,46,8c), r(29,ee,ee,c7), r(d3,b8,b8,6b), r(3c,14,14,28),\
+    r(79,de,de,a7), r(e2,5e,5e,bc), r(1d,0b,0b,16), r(76,db,db,ad),\
+    r(3b,e0,e0,db), r(56,32,32,64), r(4e,3a,3a,74), r(1e,0a,0a,14),\
+    r(db,49,49,92), r(0a,06,06,0c), r(6c,24,24,48), r(e4,5c,5c,b8),\
+    r(5d,c2,c2,9f), r(6e,d3,d3,bd), r(ef,ac,ac,43), r(a6,62,62,c4),\
+    r(a8,91,91,39), r(a4,95,95,31), r(37,e4,e4,d3), r(8b,79,79,f2),\
+    r(32,e7,e7,d5), r(43,c8,c8,8b), r(59,37,37,6e), r(b7,6d,6d,da),\
+    r(8c,8d,8d,01), r(64,d5,d5,b1), r(d2,4e,4e,9c), r(e0,a9,a9,49),\
+    r(b4,6c,6c,d8), r(fa,56,56,ac), r(07,f4,f4,f3), r(25,ea,ea,cf),\
+    r(af,65,65,ca), r(8e,7a,7a,f4), r(e9,ae,ae,47), r(18,08,08,10),\
+    r(d5,ba,ba,6f), r(88,78,78,f0), r(6f,25,25,4a), r(72,2e,2e,5c),\
+    r(24,1c,1c,38), r(f1,a6,a6,57), r(c7,b4,b4,73), r(51,c6,c6,97),\
+    r(23,e8,e8,cb), r(7c,dd,dd,a1), r(9c,74,74,e8), r(21,1f,1f,3e),\
+    r(dd,4b,4b,96), r(dc,bd,bd,61), r(86,8b,8b,0d), r(85,8a,8a,0f),\
+    r(90,70,70,e0), r(42,3e,3e,7c), r(c4,b5,b5,71), r(aa,66,66,cc),\
+    r(d8,48,48,90), r(05,03,03,06), r(01,f6,f6,f7), r(12,0e,0e,1c),\
+    r(a3,61,61,c2), r(5f,35,35,6a), r(f9,57,57,ae), r(d0,b9,b9,69),\
+    r(91,86,86,17), r(58,c1,c1,99), r(27,1d,1d,3a), r(b9,9e,9e,27),\
+    r(38,e1,e1,d9), r(13,f8,f8,eb), r(b3,98,98,2b), r(33,11,11,22),\
+    r(bb,69,69,d2), r(70,d9,d9,a9), r(89,8e,8e,07), r(a7,94,94,33),\
+    r(b6,9b,9b,2d), r(22,1e,1e,3c), r(92,87,87,15), r(20,e9,e9,c9),\
+    r(49,ce,ce,87), r(ff,55,55,aa), r(78,28,28,50), r(7a,df,df,a5),\
+    r(8f,8c,8c,03), r(f8,a1,a1,59), r(80,89,89,09), r(17,0d,0d,1a),\
+    r(da,bf,bf,65), r(31,e6,e6,d7), r(c6,42,42,84), r(b8,68,68,d0),\
+    r(c3,41,41,82), r(b0,99,99,29), r(77,2d,2d,5a), r(11,0f,0f,1e),\
+    r(cb,b0,b0,7b), r(fc,54,54,a8), r(d6,bb,bb,6d), r(3a,16,16,2c)
+
+//  data for inverse tables (other than last round)
+
+#define i_table \
+    r(50,a7,f4,51), r(53,65,41,7e), r(c3,a4,17,1a), r(96,5e,27,3a),\
+    r(cb,6b,ab,3b), r(f1,45,9d,1f), r(ab,58,fa,ac), r(93,03,e3,4b),\
+    r(55,fa,30,20), r(f6,6d,76,ad), r(91,76,cc,88), r(25,4c,02,f5),\
+    r(fc,d7,e5,4f), r(d7,cb,2a,c5), r(80,44,35,26), r(8f,a3,62,b5),\
+    r(49,5a,b1,de), r(67,1b,ba,25), r(98,0e,ea,45), r(e1,c0,fe,5d),\
+    r(02,75,2f,c3), r(12,f0,4c,81), r(a3,97,46,8d), r(c6,f9,d3,6b),\
+    r(e7,5f,8f,03), r(95,9c,92,15), r(eb,7a,6d,bf), r(da,59,52,95),\
+    r(2d,83,be,d4), r(d3,21,74,58), r(29,69,e0,49), r(44,c8,c9,8e),\
+    r(6a,89,c2,75), r(78,79,8e,f4), r(6b,3e,58,99), r(dd,71,b9,27),\
+    r(b6,4f,e1,be), r(17,ad,88,f0), r(66,ac,20,c9), r(b4,3a,ce,7d),\
+    r(18,4a,df,63), r(82,31,1a,e5), r(60,33,51,97), r(45,7f,53,62),\
+    r(e0,77,64,b1), r(84,ae,6b,bb), r(1c,a0,81,fe), r(94,2b,08,f9),\
+    r(58,68,48,70), r(19,fd,45,8f), r(87,6c,de,94), r(b7,f8,7b,52),\
+    r(23,d3,73,ab), r(e2,02,4b,72), r(57,8f,1f,e3), r(2a,ab,55,66),\
+    r(07,28,eb,b2), r(03,c2,b5,2f), r(9a,7b,c5,86), r(a5,08,37,d3),\
+    r(f2,87,28,30), r(b2,a5,bf,23), r(ba,6a,03,02), r(5c,82,16,ed),\
+    r(2b,1c,cf,8a), r(92,b4,79,a7), r(f0,f2,07,f3), r(a1,e2,69,4e),\
+    r(cd,f4,da,65), r(d5,be,05,06), r(1f,62,34,d1), r(8a,fe,a6,c4),\
+    r(9d,53,2e,34), r(a0,55,f3,a2), r(32,e1,8a,05), r(75,eb,f6,a4),\
+    r(39,ec,83,0b), r(aa,ef,60,40), r(06,9f,71,5e), r(51,10,6e,bd),\
+    r(f9,8a,21,3e), r(3d,06,dd,96), r(ae,05,3e,dd), r(46,bd,e6,4d),\
+    r(b5,8d,54,91), r(05,5d,c4,71), r(6f,d4,06,04), r(ff,15,50,60),\
+    r(24,fb,98,19), r(97,e9,bd,d6), r(cc,43,40,89), r(77,9e,d9,67),\
+    r(bd,42,e8,b0), r(88,8b,89,07), r(38,5b,19,e7), r(db,ee,c8,79),\
+    r(47,0a,7c,a1), r(e9,0f,42,7c), r(c9,1e,84,f8), r(00,00,00,00),\
+    r(83,86,80,09), r(48,ed,2b,32), r(ac,70,11,1e), r(4e,72,5a,6c),\
+    r(fb,ff,0e,fd), r(56,38,85,0f), r(1e,d5,ae,3d), r(27,39,2d,36),\
+    r(64,d9,0f,0a), r(21,a6,5c,68), r(d1,54,5b,9b), r(3a,2e,36,24),\
+    r(b1,67,0a,0c), r(0f,e7,57,93), r(d2,96,ee,b4), r(9e,91,9b,1b),\
+    r(4f,c5,c0,80), r(a2,20,dc,61), r(69,4b,77,5a), r(16,1a,12,1c),\
+    r(0a,ba,93,e2), r(e5,2a,a0,c0), r(43,e0,22,3c), r(1d,17,1b,12),\
+    r(0b,0d,09,0e), r(ad,c7,8b,f2), r(b9,a8,b6,2d), r(c8,a9,1e,14),\
+    r(85,19,f1,57), r(4c,07,75,af), r(bb,dd,99,ee), r(fd,60,7f,a3),\
+    r(9f,26,01,f7), r(bc,f5,72,5c), r(c5,3b,66,44), r(34,7e,fb,5b),\
+    r(76,29,43,8b), r(dc,c6,23,cb), r(68,fc,ed,b6), r(63,f1,e4,b8),\
+    r(ca,dc,31,d7), r(10,85,63,42), r(40,22,97,13), r(20,11,c6,84),\
+    r(7d,24,4a,85), r(f8,3d,bb,d2), r(11,32,f9,ae), r(6d,a1,29,c7),\
+    r(4b,2f,9e,1d), r(f3,30,b2,dc), r(ec,52,86,0d), r(d0,e3,c1,77),\
+    r(6c,16,b3,2b), r(99,b9,70,a9), r(fa,48,94,11), r(22,64,e9,47),\
+    r(c4,8c,fc,a8), r(1a,3f,f0,a0), r(d8,2c,7d,56), r(ef,90,33,22),\
+    r(c7,4e,49,87), r(c1,d1,38,d9), r(fe,a2,ca,8c), r(36,0b,d4,98),\
+    r(cf,81,f5,a6), r(28,de,7a,a5), r(26,8e,b7,da), r(a4,bf,ad,3f),\
+    r(e4,9d,3a,2c), r(0d,92,78,50), r(9b,cc,5f,6a), r(62,46,7e,54),\
+    r(c2,13,8d,f6), r(e8,b8,d8,90), r(5e,f7,39,2e), r(f5,af,c3,82),\
+    r(be,80,5d,9f), r(7c,93,d0,69), r(a9,2d,d5,6f), r(b3,12,25,cf),\
+    r(3b,99,ac,c8), r(a7,7d,18,10), r(6e,63,9c,e8), r(7b,bb,3b,db),\
+    r(09,78,26,cd), r(f4,18,59,6e), r(01,b7,9a,ec), r(a8,9a,4f,83),\
+    r(65,6e,95,e6), r(7e,e6,ff,aa), r(08,cf,bc,21), r(e6,e8,15,ef),\
+    r(d9,9b,e7,ba), r(ce,36,6f,4a), r(d4,09,9f,ea), r(d6,7c,b0,29),\
+    r(af,b2,a4,31), r(31,23,3f,2a), r(30,94,a5,c6), r(c0,66,a2,35),\
+    r(37,bc,4e,74), r(a6,ca,82,fc), r(b0,d0,90,e0), r(15,d8,a7,33),\
+    r(4a,98,04,f1), r(f7,da,ec,41), r(0e,50,cd,7f), r(2f,f6,91,17),\
+    r(8d,d6,4d,76), r(4d,b0,ef,43), r(54,4d,aa,cc), r(df,04,96,e4),\
+    r(e3,b5,d1,9e), r(1b,88,6a,4c), r(b8,1f,2c,c1), r(7f,51,65,46),\
+    r(04,ea,5e,9d), r(5d,35,8c,01), r(73,74,87,fa), r(2e,41,0b,fb),\
+    r(5a,1d,67,b3), r(52,d2,db,92), r(33,56,10,e9), r(13,47,d6,6d),\
+    r(8c,61,d7,9a), r(7a,0c,a1,37), r(8e,14,f8,59), r(89,3c,13,eb),\
+    r(ee,27,a9,ce), r(35,c9,61,b7), r(ed,e5,1c,e1), r(3c,b1,47,7a),\
+    r(59,df,d2,9c), r(3f,73,f2,55), r(79,ce,14,18), r(bf,37,c7,73),\
+    r(ea,cd,f7,53), r(5b,aa,fd,5f), r(14,6f,3d,df), r(86,db,44,78),\
+    r(81,f3,af,ca), r(3e,c4,68,b9), r(2c,34,24,38), r(5f,40,a3,c2),\
+    r(72,c3,1d,16), r(0c,25,e2,bc), r(8b,49,3c,28), r(41,95,0d,ff),\
+    r(71,01,a8,39), r(de,b3,0c,08), r(9c,e4,b4,d8), r(90,c1,56,64),\
+    r(61,84,cb,7b), r(70,b6,32,d5), r(74,5c,6c,48), r(42,57,b8,d0)
+
+// generate the required tables in the desired endian format
+
+#undef  r
+#define r   r0
+
+#if defined(ONE_TABLE)
+static const u_int32_t ft_tab[256] =
+    {   f_table };
+#elif defined(FOUR_TABLES)
+static const u_int32_t ft_tab[4][256] =
+{   {   f_table },
+#undef  r
+#define r   r1
+    {   f_table },
+#undef  r
+#define r   r2
+    {   f_table },
+#undef  r
+#define r   r3
+    {   f_table }
+};
+#endif
+
+#undef  r
+#define r   r0
+#if defined(ONE_TABLE)
+static const u_int32_t it_tab[256] =
+    {   i_table };
+#elif defined(FOUR_TABLES)
+static const u_int32_t it_tab[4][256] =
+{   {   i_table },
+#undef  r
+#define r   r1
+    {   i_table },
+#undef  r
+#define r   r2
+    {   i_table },
+#undef  r
+#define r   r3
+    {   i_table }
+};
+#endif
+
+#endif
+
+#if defined(FIXED_TABLES) && (defined(ONE_LR_TABLE) || defined(FOUR_LR_TABLES)) 
+
+//  data for inverse tables (last round)
+
+#define li_table    \
+    w(52), w(09), w(6a), w(d5), w(30), w(36), w(a5), w(38),\
+    w(bf), w(40), w(a3), w(9e), w(81), w(f3), w(d7), w(fb),\
+    w(7c), w(e3), w(39), w(82), w(9b), w(2f), w(ff), w(87),\
+    w(34), w(8e), w(43), w(44), w(c4), w(de), w(e9), w(cb),\
+    w(54), w(7b), w(94), w(32), w(a6), w(c2), w(23), w(3d),\
+    w(ee), w(4c), w(95), w(0b), w(42), w(fa), w(c3), w(4e),\
+    w(08), w(2e), w(a1), w(66), w(28), w(d9), w(24), w(b2),\
+    w(76), w(5b), w(a2), w(49), w(6d), w(8b), w(d1), w(25),\
+    w(72), w(f8), w(f6), w(64), w(86), w(68), w(98), w(16),\
+    w(d4), w(a4), w(5c), w(cc), w(5d), w(65), w(b6), w(92),\
+    w(6c), w(70), w(48), w(50), w(fd), w(ed), w(b9), w(da),\
+    w(5e), w(15), w(46), w(57), w(a7), w(8d), w(9d), w(84),\
+    w(90), w(d8), w(ab), w(00), w(8c), w(bc), w(d3), w(0a),\
+    w(f7), w(e4), w(58), w(05), w(b8), w(b3), w(45), w(06),\
+    w(d0), w(2c), w(1e), w(8f), w(ca), w(3f), w(0f), w(02),\
+    w(c1), w(af), w(bd), w(03), w(01), w(13), w(8a), w(6b),\
+    w(3a), w(91), w(11), w(41), w(4f), w(67), w(dc), w(ea),\
+    w(97), w(f2), w(cf), w(ce), w(f0), w(b4), w(e6), w(73),\
+    w(96), w(ac), w(74), w(22), w(e7), w(ad), w(35), w(85),\
+    w(e2), w(f9), w(37), w(e8), w(1c), w(75), w(df), w(6e),\
+    w(47), w(f1), w(1a), w(71), w(1d), w(29), w(c5), w(89),\
+    w(6f), w(b7), w(62), w(0e), w(aa), w(18), w(be), w(1b),\
+    w(fc), w(56), w(3e), w(4b), w(c6), w(d2), w(79), w(20),\
+    w(9a), w(db), w(c0), w(fe), w(78), w(cd), w(5a), w(f4),\
+    w(1f), w(dd), w(a8), w(33), w(88), w(07), w(c7), w(31),\
+    w(b1), w(12), w(10), w(59), w(27), w(80), w(ec), w(5f),\
+    w(60), w(51), w(7f), w(a9), w(19), w(b5), w(4a), w(0d),\
+    w(2d), w(e5), w(7a), w(9f), w(93), w(c9), w(9c), w(ef),\
+    w(a0), w(e0), w(3b), w(4d), w(ae), w(2a), w(f5), w(b0),\
+    w(c8), w(eb), w(bb), w(3c), w(83), w(53), w(99), w(61),\
+    w(17), w(2b), w(04), w(7e), w(ba), w(77), w(d6), w(26),\
+    w(e1), w(69), w(14), w(63), w(55), w(21), w(0c), w(7d),
+
+// generate the required tables in the desired endian format
+
+#undef  r
+#define r(p,q,r,s)  w0(q)
+#if defined(ONE_LR_TABLE)
+static const u_int32_t fl_tab[256] =
+    {   f_table     };
+#elif defined(FOUR_LR_TABLES)
+static const u_int32_t fl_tab[4][256] =
+{   {   f_table    },
+#undef  r
+#define r(p,q,r,s)   w1(q)
+    {   f_table    },
+#undef  r
+#define r(p,q,r,s)   w2(q)
+    {   f_table    },
+#undef  r
+#define r(p,q,r,s)   w3(q)
+    {   f_table    }
+};
+#endif
+
+#undef  w
+#define w   w0
+#if defined(ONE_LR_TABLE)
+static const u_int32_t il_tab[256] =
+    {   li_table    };
+#elif defined(FOUR_LR_TABLES)
+static const u_int32_t il_tab[4][256] =
+{   {   li_table    },
+#undef  w
+#define w   w1
+    {   li_table    },
+#undef  w
+#define w   w2
+    {   li_table    },
+#undef  w
+#define w   w3
+    {   li_table    }
+};
+#endif
+
+#endif
+
+#if defined(FIXED_TABLES) && (defined(ONE_IM_TABLE) || defined(FOUR_IM_TABLES)) 
+
+#define m_table \
+    r(00,00,00,00), r(0b,0d,09,0e), r(16,1a,12,1c), r(1d,17,1b,12),\
+    r(2c,34,24,38), r(27,39,2d,36), r(3a,2e,36,24), r(31,23,3f,2a),\
+    r(58,68,48,70), r(53,65,41,7e), r(4e,72,5a,6c), r(45,7f,53,62),\
+    r(74,5c,6c,48), r(7f,51,65,46), r(62,46,7e,54), r(69,4b,77,5a),\
+    r(b0,d0,90,e0), r(bb,dd,99,ee), r(a6,ca,82,fc), r(ad,c7,8b,f2),\
+    r(9c,e4,b4,d8), r(97,e9,bd,d6), r(8a,fe,a6,c4), r(81,f3,af,ca),\
+    r(e8,b8,d8,90), r(e3,b5,d1,9e), r(fe,a2,ca,8c), r(f5,af,c3,82),\
+    r(c4,8c,fc,a8), r(cf,81,f5,a6), r(d2,96,ee,b4), r(d9,9b,e7,ba),\
+    r(7b,bb,3b,db), r(70,b6,32,d5), r(6d,a1,29,c7), r(66,ac,20,c9),\
+    r(57,8f,1f,e3), r(5c,82,16,ed), r(41,95,0d,ff), r(4a,98,04,f1),\
+    r(23,d3,73,ab), r(28,de,7a,a5), r(35,c9,61,b7), r(3e,c4,68,b9),\
+    r(0f,e7,57,93), r(04,ea,5e,9d), r(19,fd,45,8f), r(12,f0,4c,81),\
+    r(cb,6b,ab,3b), r(c0,66,a2,35), r(dd,71,b9,27), r(d6,7c,b0,29),\
+    r(e7,5f,8f,03), r(ec,52,86,0d), r(f1,45,9d,1f), r(fa,48,94,11),\
+    r(93,03,e3,4b), r(98,0e,ea,45), r(85,19,f1,57), r(8e,14,f8,59),\
+    r(bf,37,c7,73), r(b4,3a,ce,7d), r(a9,2d,d5,6f), r(a2,20,dc,61),\
+    r(f6,6d,76,ad), r(fd,60,7f,a3), r(e0,77,64,b1), r(eb,7a,6d,bf),\
+    r(da,59,52,95), r(d1,54,5b,9b), r(cc,43,40,89), r(c7,4e,49,87),\
+    r(ae,05,3e,dd), r(a5,08,37,d3), r(b8,1f,2c,c1), r(b3,12,25,cf),\
+    r(82,31,1a,e5), r(89,3c,13,eb), r(94,2b,08,f9), r(9f,26,01,f7),\
+    r(46,bd,e6,4d), r(4d,b0,ef,43), r(50,a7,f4,51), r(5b,aa,fd,5f),\
+    r(6a,89,c2,75), r(61,84,cb,7b), r(7c,93,d0,69), r(77,9e,d9,67),\
+    r(1e,d5,ae,3d), r(15,d8,a7,33), r(08,cf,bc,21), r(03,c2,b5,2f),\
+    r(32,e1,8a,05), r(39,ec,83,0b), r(24,fb,98,19), r(2f,f6,91,17),\
+    r(8d,d6,4d,76), r(86,db,44,78), r(9b,cc,5f,6a), r(90,c1,56,64),\
+    r(a1,e2,69,4e), r(aa,ef,60,40), r(b7,f8,7b,52), r(bc,f5,72,5c),\
+    r(d5,be,05,06), r(de,b3,0c,08), r(c3,a4,17,1a), r(c8,a9,1e,14),\
+    r(f9,8a,21,3e), r(f2,87,28,30), r(ef,90,33,22), r(e4,9d,3a,2c),\
+    r(3d,06,dd,96), r(36,0b,d4,98), r(2b,1c,cf,8a), r(20,11,c6,84),\
+    r(11,32,f9,ae), r(1a,3f,f0,a0), r(07,28,eb,b2), r(0c,25,e2,bc),\
+    r(65,6e,95,e6), r(6e,63,9c,e8), r(73,74,87,fa), r(78,79,8e,f4),\
+    r(49,5a,b1,de), r(42,57,b8,d0), r(5f,40,a3,c2), r(54,4d,aa,cc),\
+    r(f7,da,ec,41), r(fc,d7,e5,4f), r(e1,c0,fe,5d), r(ea,cd,f7,53),\
+    r(db,ee,c8,79), r(d0,e3,c1,77), r(cd,f4,da,65), r(c6,f9,d3,6b),\
+    r(af,b2,a4,31), r(a4,bf,ad,3f), r(b9,a8,b6,2d), r(b2,a5,bf,23),\
+    r(83,86,80,09), r(88,8b,89,07), r(95,9c,92,15), r(9e,91,9b,1b),\
+    r(47,0a,7c,a1), r(4c,07,75,af), r(51,10,6e,bd), r(5a,1d,67,b3),\
+    r(6b,3e,58,99), r(60,33,51,97), r(7d,24,4a,85), r(76,29,43,8b),\
+    r(1f,62,34,d1), r(14,6f,3d,df), r(09,78,26,cd), r(02,75,2f,c3),\
+    r(33,56,10,e9), r(38,5b,19,e7), r(25,4c,02,f5), r(2e,41,0b,fb),\
+    r(8c,61,d7,9a), r(87,6c,de,94), r(9a,7b,c5,86), r(91,76,cc,88),\
+    r(a0,55,f3,a2), r(ab,58,fa,ac), r(b6,4f,e1,be), r(bd,42,e8,b0),\
+    r(d4,09,9f,ea), r(df,04,96,e4), r(c2,13,8d,f6), r(c9,1e,84,f8),\
+    r(f8,3d,bb,d2), r(f3,30,b2,dc), r(ee,27,a9,ce), r(e5,2a,a0,c0),\
+    r(3c,b1,47,7a), r(37,bc,4e,74), r(2a,ab,55,66), r(21,a6,5c,68),\
+    r(10,85,63,42), r(1b,88,6a,4c), r(06,9f,71,5e), r(0d,92,78,50),\
+    r(64,d9,0f,0a), r(6f,d4,06,04), r(72,c3,1d,16), r(79,ce,14,18),\
+    r(48,ed,2b,32), r(43,e0,22,3c), r(5e,f7,39,2e), r(55,fa,30,20),\
+    r(01,b7,9a,ec), r(0a,ba,93,e2), r(17,ad,88,f0), r(1c,a0,81,fe),\
+    r(2d,83,be,d4), r(26,8e,b7,da), r(3b,99,ac,c8), r(30,94,a5,c6),\
+    r(59,df,d2,9c), r(52,d2,db,92), r(4f,c5,c0,80), r(44,c8,c9,8e),\
+    r(75,eb,f6,a4), r(7e,e6,ff,aa), r(63,f1,e4,b8), r(68,fc,ed,b6),\
+    r(b1,67,0a,0c), r(ba,6a,03,02), r(a7,7d,18,10), r(ac,70,11,1e),\
+    r(9d,53,2e,34), r(96,5e,27,3a), r(8b,49,3c,28), r(80,44,35,26),\
+    r(e9,0f,42,7c), r(e2,02,4b,72), r(ff,15,50,60), r(f4,18,59,6e),\
+    r(c5,3b,66,44), r(ce,36,6f,4a), r(d3,21,74,58), r(d8,2c,7d,56),\
+    r(7a,0c,a1,37), r(71,01,a8,39), r(6c,16,b3,2b), r(67,1b,ba,25),\
+    r(56,38,85,0f), r(5d,35,8c,01), r(40,22,97,13), r(4b,2f,9e,1d),\
+    r(22,64,e9,47), r(29,69,e0,49), r(34,7e,fb,5b), r(3f,73,f2,55),\
+    r(0e,50,cd,7f), r(05,5d,c4,71), r(18,4a,df,63), r(13,47,d6,6d),\
+    r(ca,dc,31,d7), r(c1,d1,38,d9), r(dc,c6,23,cb), r(d7,cb,2a,c5),\
+    r(e6,e8,15,ef), r(ed,e5,1c,e1), r(f0,f2,07,f3), r(fb,ff,0e,fd),\
+    r(92,b4,79,a7), r(99,b9,70,a9), r(84,ae,6b,bb), r(8f,a3,62,b5),\
+    r(be,80,5d,9f), r(b5,8d,54,91), r(a8,9a,4f,83), r(a3,97,46,8d)
+
+#undef r
+#define r   r0
+
+#if defined(ONE_IM_TABLE)
+static const u_int32_t im_tab[256] =
+    {   m_table };
+#elif defined(FOUR_IM_TABLES)
+static const u_int32_t im_tab[4][256] =
+{   {   m_table },
+#undef  r
+#define r   r1
+    {   m_table },
+#undef  r
+#define r   r2
+    {   m_table },
+#undef  r
+#define r   r3
+    {   m_table }
+};
+#endif
+
+#endif
+
+#else
+
+static int tab_gen = 0;
+
+static unsigned char  s_box[256];            // the S box
+static unsigned char  inv_s_box[256];        // the inverse S box
+static u_int32_t  rcon_tab[AES_RC_LENGTH];   // table of round constants
+
+#if defined(ONE_TABLE)
+static u_int32_t  ft_tab[256];
+static u_int32_t  it_tab[256];
+#elif defined(FOUR_TABLES)
+static u_int32_t  ft_tab[4][256];
+static u_int32_t  it_tab[4][256];
+#endif
+
+#if defined(ONE_LR_TABLE)
+static u_int32_t  fl_tab[256];
+static u_int32_t  il_tab[256];
+#elif defined(FOUR_LR_TABLES)
+static u_int32_t  fl_tab[4][256];
+static u_int32_t  il_tab[4][256];
+#endif
+
+#if defined(ONE_IM_TABLE)
+static u_int32_t  im_tab[256];
+#elif defined(FOUR_IM_TABLES)
+static u_int32_t  im_tab[4][256];
+#endif
+
+// Generate the tables for the dynamic table option
+
+#if !defined(FF_TABLES)
+
+// It will generally be sensible to use tables to compute finite 
+// field multiplies and inverses but where memory is scarse this 
+// code might sometimes be better.
+
+// return 2 ^ (n - 1) where n is the bit number of the highest bit
+// set in x with x in the range 1 < x < 0x00000200.   This form is
+// used so that locals within FFinv can be bytes rather than words
+
+static unsigned char hibit(const u_int32_t x)
+{   unsigned char r = (unsigned char)((x >> 1) | (x >> 2));
+    
+    r |= (r >> 2);
+    r |= (r >> 4);
+    return (r + 1) >> 1;
+}
+
+// return the inverse of the finite field element x
+
+static unsigned char FFinv(const unsigned char x)
+{   unsigned char    p1 = x, p2 = 0x1b, n1 = hibit(x), n2 = 0x80, v1 = 1, v2 = 0;
+
+    if(x < 2) return x;
+
+    for(;;)
+    {
+        if(!n1) return v1;
+
+        while(n2 >= n1)
+        {   
+            n2 /= n1; p2 ^= p1 * n2; v2 ^= v1 * n2; n2 = hibit(p2);
+        }
+        
+        if(!n2) return v2;
+
+        while(n1 >= n2)
+        {   
+            n1 /= n2; p1 ^= p2 * n1; v1 ^= v2 * n1; n1 = hibit(p1);
+        }
+    }
+}
+
+// define the finite field multiplies required for Rijndael
+
+#define FFmul02(x)  ((((x) & 0x7f) << 1) ^ ((x) & 0x80 ? 0x1b : 0))
+#define FFmul03(x)  ((x) ^ FFmul02(x))
+#define FFmul09(x)  ((x) ^ FFmul02(FFmul02(FFmul02(x))))
+#define FFmul0b(x)  ((x) ^ FFmul02((x) ^ FFmul02(FFmul02(x))))
+#define FFmul0d(x)  ((x) ^ FFmul02(FFmul02((x) ^ FFmul02(x))))
+#define FFmul0e(x)  FFmul02((x) ^ FFmul02((x) ^ FFmul02(x)))
+
+#else
+
+#define FFinv(x)    ((x) ? pow[255 - log[x]]: 0)
+
+#define FFmul02(x) (x ? pow[log[x] + 0x19] : 0)
+#define FFmul03(x) (x ? pow[log[x] + 0x01] : 0)
+#define FFmul09(x) (x ? pow[log[x] + 0xc7] : 0)
+#define FFmul0b(x) (x ? pow[log[x] + 0x68] : 0)
+#define FFmul0d(x) (x ? pow[log[x] + 0xee] : 0)
+#define FFmul0e(x) (x ? pow[log[x] + 0xdf] : 0)
+
+#endif
+
+// The forward and inverse affine transformations used in the S-box
+
+#define fwd_affine(x) \
+    (w = (u_int32_t)x, w ^= (w<<1)^(w<<2)^(w<<3)^(w<<4), 0x63^(unsigned char)(w^(w>>8)))
+
+#define inv_affine(x) \
+    (w = (u_int32_t)x, w = (w<<1)^(w<<3)^(w<<6), 0x05^(unsigned char)(w^(w>>8)))
+
+static void gen_tabs(void)
+{   u_int32_t  i, w;
+
+#if defined(FF_TABLES)
+
+    unsigned char  pow[512], log[256];
+
+    // log and power tables for GF(2^8) finite field with
+    // 0x011b as modular polynomial - the simplest primitive
+    // root is 0x03, used here to generate the tables
+
+    i = 0; w = 1; 
+    do
+    {   
+        pow[i] = (unsigned char)w;
+        pow[i + 255] = (unsigned char)w;
+        log[w] = (unsigned char)i++;
+        w ^=  (w << 1) ^ (w & ff_hi ? ff_poly : 0);
+    }
+    while (w != 1);
+
+#endif
+
+    for(i = 0, w = 1; i < AES_RC_LENGTH; ++i)
+    {
+        rcon_tab[i] = bytes2word(w, 0, 0, 0);
+        w = (w << 1) ^ (w & ff_hi ? ff_poly : 0);
+    }
+
+    for(i = 0; i < 256; ++i)
+    {   unsigned char    b;
+
+        s_box[i] = b = fwd_affine(FFinv((unsigned char)i));
+
+        w = bytes2word(b, 0, 0, 0);
+#if defined(ONE_LR_TABLE)
+        fl_tab[i] = w;
+#elif defined(FOUR_LR_TABLES)
+        fl_tab[0][i] = w;
+        fl_tab[1][i] = upr(w,1);
+        fl_tab[2][i] = upr(w,2);
+        fl_tab[3][i] = upr(w,3);
+#endif
+        w = bytes2word(FFmul02(b), b, b, FFmul03(b));
+#if defined(ONE_TABLE)
+        ft_tab[i] = w;
+#elif defined(FOUR_TABLES)
+        ft_tab[0][i] = w;
+        ft_tab[1][i] = upr(w,1);
+        ft_tab[2][i] = upr(w,2);
+        ft_tab[3][i] = upr(w,3);
+#endif
+        inv_s_box[i] = b = FFinv(inv_affine((unsigned char)i));
+
+        w = bytes2word(b, 0, 0, 0);
+#if defined(ONE_LR_TABLE)
+        il_tab[i] = w;
+#elif defined(FOUR_LR_TABLES)
+        il_tab[0][i] = w;
+        il_tab[1][i] = upr(w,1);
+        il_tab[2][i] = upr(w,2);
+        il_tab[3][i] = upr(w,3);
+#endif
+        w = bytes2word(FFmul0e(b), FFmul09(b), FFmul0d(b), FFmul0b(b));
+#if defined(ONE_TABLE)
+        it_tab[i] = w;
+#elif defined(FOUR_TABLES)
+        it_tab[0][i] = w;
+        it_tab[1][i] = upr(w,1);
+        it_tab[2][i] = upr(w,2);
+        it_tab[3][i] = upr(w,3);
+#endif
+#if defined(ONE_IM_TABLE)
+        im_tab[b] = w;
+#elif defined(FOUR_IM_TABLES)
+        im_tab[0][b] = w;
+        im_tab[1][b] = upr(w,1);
+        im_tab[2][b] = upr(w,2);
+        im_tab[3][b] = upr(w,3);
+#endif
+
+    }
+}
+
+#endif
+
+#define no_table(x,box,vf,rf,c) bytes2word( \
+    box[bval(vf(x,0,c),rf(0,c))], \
+    box[bval(vf(x,1,c),rf(1,c))], \
+    box[bval(vf(x,2,c),rf(2,c))], \
+    box[bval(vf(x,3,c),rf(3,c))])
+
+#define one_table(x,op,tab,vf,rf,c) \
+ (     tab[bval(vf(x,0,c),rf(0,c))] \
+  ^ op(tab[bval(vf(x,1,c),rf(1,c))],1) \
+  ^ op(tab[bval(vf(x,2,c),rf(2,c))],2) \
+  ^ op(tab[bval(vf(x,3,c),rf(3,c))],3))
+
+#define four_tables(x,tab,vf,rf,c) \
+ (  tab[0][bval(vf(x,0,c),rf(0,c))] \
+  ^ tab[1][bval(vf(x,1,c),rf(1,c))] \
+  ^ tab[2][bval(vf(x,2,c),rf(2,c))] \
+  ^ tab[3][bval(vf(x,3,c),rf(3,c))])
+
+#define vf1(x,r,c)  (x)
+#define rf1(r,c)    (r)
+#define rf2(r,c)    ((r-c)&3)
+
+#if defined(FOUR_LR_TABLES)
+#define ls_box(x,c)     four_tables(x,fl_tab,vf1,rf2,c)
+#elif defined(ONE_LR_TABLE)
+#define ls_box(x,c)     one_table(x,upr,fl_tab,vf1,rf2,c)
+#else
+#define ls_box(x,c)     no_table(x,s_box,vf1,rf2,c)
+#endif
+
+#if defined(FOUR_IM_TABLES)
+#define inv_mcol(x)     four_tables(x,im_tab,vf1,rf1,0)
+#elif defined(ONE_IM_TABLE)
+#define inv_mcol(x)     one_table(x,upr,im_tab,vf1,rf1,0)
+#else
+#define inv_mcol(x) \
+    (f9 = (x),f2 = FFmulX(f9), f4 = FFmulX(f2), f8 = FFmulX(f4), f9 ^= f8, \
+    f2 ^= f4 ^ f8 ^ upr(f2 ^ f9,3) ^ upr(f4 ^ f9,2) ^ upr(f9,1))
+#endif
+
+// Subroutine to set the block size (if variable) in bytes, legal
+// values being 16, 24 and 32.
+
+#if defined(AES_BLOCK_SIZE)
+#define nc   (AES_BLOCK_SIZE / 4)
+#else
+#define nc   (cx->aes_Ncol)
+
+void aes_set_blk(aes_context *cx, int n_bytes)
+{
+#if !defined(FIXED_TABLES)
+    if(!tab_gen) { gen_tabs(); tab_gen = 1; }
+#endif
+
+    switch(n_bytes) {
+    case 32:        /* bytes */
+    case 256:       /* bits */
+        nc = 8;
+        break;
+    case 24:        /* bytes */
+    case 192:       /* bits */
+        nc = 6;
+        break;
+    case 16:        /* bytes */
+    case 128:       /* bits */
+    default:
+        nc = 4;
+        break;
+    }
+}
+
+#endif
+
+// Initialise the key schedule from the user supplied key. The key
+// length is now specified in bytes - 16, 24 or 32 as appropriate.
+// This corresponds to bit lengths of 128, 192 and 256 bits, and
+// to Nk values of 4, 6 and 8 respectively.
+
+#define mx(t,f) (*t++ = inv_mcol(*f),f++)
+#define cp(t,f) *t++ = *f++
+
+#if   AES_BLOCK_SIZE == 16
+#define cpy(d,s)    cp(d,s); cp(d,s); cp(d,s); cp(d,s)
+#define mix(d,s)    mx(d,s); mx(d,s); mx(d,s); mx(d,s)
+#elif AES_BLOCK_SIZE == 24
+#define cpy(d,s)    cp(d,s); cp(d,s); cp(d,s); cp(d,s); \
+                    cp(d,s); cp(d,s)
+#define mix(d,s)    mx(d,s); mx(d,s); mx(d,s); mx(d,s); \
+                    mx(d,s); mx(d,s)
+#elif AES_BLOCK_SIZE == 32
+#define cpy(d,s)    cp(d,s); cp(d,s); cp(d,s); cp(d,s); \
+                    cp(d,s); cp(d,s); cp(d,s); cp(d,s)
+#define mix(d,s)    mx(d,s); mx(d,s); mx(d,s); mx(d,s); \
+                    mx(d,s); mx(d,s); mx(d,s); mx(d,s)
+#else
+
+#define cpy(d,s) \
+switch(nc) \
+{   case 8: cp(d,s); cp(d,s); \
+    case 6: cp(d,s); cp(d,s); \
+    case 4: cp(d,s); cp(d,s); \
+            cp(d,s); cp(d,s); \
+}
+
+#define mix(d,s) \
+switch(nc) \
+{   case 8: mx(d,s); mx(d,s); \
+    case 6: mx(d,s); mx(d,s); \
+    case 4: mx(d,s); mx(d,s); \
+            mx(d,s); mx(d,s); \
+}
+
+#endif
+
+void aes_set_key(aes_context *cx, const unsigned char in_key[], int n_bytes, const int f)
+{   u_int32_t    *kf, *kt, rci;
+
+#if !defined(FIXED_TABLES)
+    if(!tab_gen) { gen_tabs(); tab_gen = 1; }
+#endif
+
+    switch(n_bytes) {
+    case 32:                    /* bytes */
+    case 256:                   /* bits */
+        cx->aes_Nkey = 8;
+        break;
+    case 24:                    /* bytes */
+    case 192:                   /* bits */
+        cx->aes_Nkey = 6;
+        break;
+    case 16:                    /* bytes */
+    case 128:                   /* bits */
+    default:
+        cx->aes_Nkey = 4;
+        break;
+    }
+
+    cx->aes_Nrnd = (cx->aes_Nkey > nc ? cx->aes_Nkey : nc) + 6; 
+
+    cx->aes_e_key[0] = const_word_in(in_key     );
+    cx->aes_e_key[1] = const_word_in(in_key +  4);
+    cx->aes_e_key[2] = const_word_in(in_key +  8);
+    cx->aes_e_key[3] = const_word_in(in_key + 12);
+
+    kf = cx->aes_e_key; 
+    kt = kf + nc * (cx->aes_Nrnd + 1) - cx->aes_Nkey; 
+    rci = 0;
+
+    switch(cx->aes_Nkey)
+    {
+    case 4: do
+            {   kf[4] = kf[0] ^ ls_box(kf[3],3) ^ rcon_tab[rci++];
+                kf[5] = kf[1] ^ kf[4];
+                kf[6] = kf[2] ^ kf[5];
+                kf[7] = kf[3] ^ kf[6];
+                kf += 4;
+            }
+            while(kf < kt);
+            break;
+
+    case 6: cx->aes_e_key[4] = const_word_in(in_key + 16);
+            cx->aes_e_key[5] = const_word_in(in_key + 20);
+            do
+            {   kf[ 6] = kf[0] ^ ls_box(kf[5],3) ^ rcon_tab[rci++];
+                kf[ 7] = kf[1] ^ kf[ 6];
+                kf[ 8] = kf[2] ^ kf[ 7];
+                kf[ 9] = kf[3] ^ kf[ 8];
+                kf[10] = kf[4] ^ kf[ 9];
+                kf[11] = kf[5] ^ kf[10];
+                kf += 6;
+            }
+            while(kf < kt);
+            break;
+
+    case 8: cx->aes_e_key[4] = const_word_in(in_key + 16);
+            cx->aes_e_key[5] = const_word_in(in_key + 20);
+            cx->aes_e_key[6] = const_word_in(in_key + 24);
+            cx->aes_e_key[7] = const_word_in(in_key + 28);
+            do
+            {   kf[ 8] = kf[0] ^ ls_box(kf[7],3) ^ rcon_tab[rci++];
+                kf[ 9] = kf[1] ^ kf[ 8];
+                kf[10] = kf[2] ^ kf[ 9];
+                kf[11] = kf[3] ^ kf[10];
+                kf[12] = kf[4] ^ ls_box(kf[11],0);
+                kf[13] = kf[5] ^ kf[12];
+                kf[14] = kf[6] ^ kf[13];
+                kf[15] = kf[7] ^ kf[14];
+                kf += 8;
+            }
+            while (kf < kt);
+            break;
+    }
+
+    if(!f)
+    {   u_int32_t    i;
+        
+        kt = cx->aes_d_key + nc * cx->aes_Nrnd;
+        kf = cx->aes_e_key;
+        
+        cpy(kt, kf); kt -= 2 * nc;
+
+        for(i = 1; i < cx->aes_Nrnd; ++i)
+        { 
+#if defined(ONE_TABLE) || defined(FOUR_TABLES)
+#if !defined(ONE_IM_TABLE) && !defined(FOUR_IM_TABLES)
+            u_int32_t    f2, f4, f8, f9;
+#endif
+            mix(kt, kf);
+#else
+            cpy(kt, kf);
+#endif
+            kt -= 2 * nc;
+        }
+        
+        cpy(kt, kf);
+    }
+}
+
+// y = output word, x = input word, r = row, c = column
+// for r = 0, 1, 2 and 3 = column accessed for row r
+
+#if defined(ARRAYS)
+#define s(x,c) x[c]
+#else
+#define s(x,c) x##c
+#endif
+
+// I am grateful to Frank Yellin for the following constructions
+// which, given the column (c) of the output state variable that
+// is being computed, return the input state variables which are
+// needed for each row (r) of the state
+
+// For the fixed block size options, compilers reduce these two 
+// expressions to fixed variable references. For variable block 
+// size code conditional clauses will sometimes be returned
+
+#define unused  77  // Sunset Strip
+
+#define fwd_var(x,r,c) \
+ ( r==0 ?                      \
+    ( c==0 ? s(x,0) \
+    : c==1 ? s(x,1) \
+    : c==2 ? s(x,2) \
+    : c==3 ? s(x,3) \
+    : c==4 ? s(x,4) \
+    : c==5 ? s(x,5) \
+    : c==6 ? s(x,6) \
+    : s(x,7))          \
+ : r==1 ?                      \
+    ( c==0 ? s(x,1) \
+    : c==1 ? s(x,2) \
+    : c==2 ? s(x,3) \
+    : c==3 ? nc==4 ? s(x,0) : s(x,4) \
+    : c==4 ? s(x,5) \
+    : c==5 ? nc==8 ? s(x,6) : s(x,0) \
+    : c==6 ? s(x,7) \
+    : s(x,0))          \
+ : r==2 ?                      \
+    ( c==0 ? nc==8 ? s(x,3) : s(x,2) \
+    : c==1 ? nc==8 ? s(x,4) : s(x,3) \
+    : c==2 ? nc==4 ? s(x,0) : nc==8 ? s(x,5) : s(x,4) \
+    : c==3 ? nc==4 ? s(x,1) : nc==8 ? s(x,6) : s(x,5) \
+    : c==4 ? nc==8 ? s(x,7) : s(x,0) \
+    : c==5 ? nc==8 ? s(x,0) : s(x,1) \
+    : c==6 ? s(x,1) \
+    : s(x,2))          \
+ :                                     \
+    ( c==0 ? nc==8 ? s(x,4) : s(x,3) \
+    : c==1 ? nc==4 ? s(x,0) : nc==8 ? s(x,5) : s(x,4) \
+    : c==2 ? nc==4 ? s(x,1) : nc==8 ? s(x,6) : s(x,5) \
+    : c==3 ? nc==4 ? s(x,2) : nc==8 ? s(x,7) : s(x,0) \
+    : c==4 ? nc==8 ? s(x,0) : s(x,1) \
+    : c==5 ? nc==8 ? s(x,1) : s(x,2) \
+    : c==6 ? s(x,2) \
+    : s(x,3)))
+
+#define inv_var(x,r,c) \
+ ( r==0 ?                      \
+    ( c==0 ? s(x,0) \
+    : c==1 ? s(x,1) \
+    : c==2 ? s(x,2) \
+    : c==3 ? s(x,3) \
+    : c==4 ? s(x,4) \
+    : c==5 ? s(x,5) \
+    : c==6 ? s(x,6) \
+    : s(x,7))          \
+ : r==1 ?                      \
+    ( c==0 ? nc==4 ? s(x,3) : nc==8 ? s(x,7) : s(x,5) \
+    : c==1 ? s(x,0) \
+    : c==2 ? s(x,1) \
+    : c==3 ? s(x,2) \
+    : c==4 ? s(x,3) \
+    : c==5 ? s(x,4) \
+    : c==6 ? s(x,5) \
+    : s(x,6))          \
+ : r==2 ?                      \
+    ( c==0 ? nc==4 ? s(x,2) : nc==8 ? s(x,5) : s(x,4) \
+    : c==1 ? nc==4 ? s(x,3) : nc==8 ? s(x,6) : s(x,5) \
+    : c==2 ? nc==8 ? s(x,7) : s(x,0) \
+    : c==3 ? nc==8 ? s(x,0) : s(x,1) \
+    : c==4 ? nc==8 ? s(x,1) : s(x,2) \
+    : c==5 ? nc==8 ? s(x,2) : s(x,3) \
+    : c==6 ? s(x,3) \
+    : s(x,4))          \
+ :                                     \
+    ( c==0 ? nc==4 ? s(x,1) : nc==8 ? s(x,4) : s(x,3) \
+    : c==1 ? nc==4 ? s(x,2) : nc==8 ? s(x,5) : s(x,4) \
+    : c==2 ? nc==4 ? s(x,3) : nc==8 ? s(x,6) : s(x,5) \
+    : c==3 ? nc==8 ? s(x,7) : s(x,0) \
+    : c==4 ? nc==8 ? s(x,0) : s(x,1) \
+    : c==5 ? nc==8 ? s(x,1) : s(x,2) \
+    : c==6 ? s(x,2) \
+    : s(x,3)))
+
+#define si(y,x,k,c) s(y,c) = const_word_in(x + 4 * c) ^ k[c]
+#define so(y,x,c)   word_out(y + 4 * c, s(x,c))
+
+#if defined(FOUR_TABLES)
+#define fwd_rnd(y,x,k,c)    s(y,c)= (k)[c] ^ four_tables(x,ft_tab,fwd_var,rf1,c)
+#define inv_rnd(y,x,k,c)    s(y,c)= (k)[c] ^ four_tables(x,it_tab,inv_var,rf1,c)
+#elif defined(ONE_TABLE)
+#define fwd_rnd(y,x,k,c)    s(y,c)= (k)[c] ^ one_table(x,upr,ft_tab,fwd_var,rf1,c)
+#define inv_rnd(y,x,k,c)    s(y,c)= (k)[c] ^ one_table(x,upr,it_tab,inv_var,rf1,c)
+#else
+#define fwd_rnd(y,x,k,c)    s(y,c) = fwd_mcol(no_table(x,s_box,fwd_var,rf1,c)) ^ (k)[c]
+#define inv_rnd(y,x,k,c)    s(y,c) = inv_mcol(no_table(x,inv_s_box,inv_var,rf1,c) ^ (k)[c])
+#endif
+
+#if defined(FOUR_LR_TABLES)
+#define fwd_lrnd(y,x,k,c)   s(y,c)= (k)[c] ^ four_tables(x,fl_tab,fwd_var,rf1,c)
+#define inv_lrnd(y,x,k,c)   s(y,c)= (k)[c] ^ four_tables(x,il_tab,inv_var,rf1,c)
+#elif defined(ONE_LR_TABLE)
+#define fwd_lrnd(y,x,k,c)   s(y,c)= (k)[c] ^ one_table(x,ups,fl_tab,fwd_var,rf1,c)
+#define inv_lrnd(y,x,k,c)   s(y,c)= (k)[c] ^ one_table(x,ups,il_tab,inv_var,rf1,c)
+#else
+#define fwd_lrnd(y,x,k,c)   s(y,c) = no_table(x,s_box,fwd_var,rf1,c) ^ (k)[c]
+#define inv_lrnd(y,x,k,c)   s(y,c) = no_table(x,inv_s_box,inv_var,rf1,c) ^ (k)[c]
+#endif
+
+#if AES_BLOCK_SIZE == 16
+
+#if defined(ARRAYS)
+#define locals(y,x)     x[4],y[4]
+#else
+#define locals(y,x)     x##0,x##1,x##2,x##3,y##0,y##1,y##2,y##3
+// the following defines prevent the compiler requiring the declaration
+// of generated but unused variables in the fwd_var and inv_var macros
+#define b04 unused
+#define b05 unused
+#define b06 unused
+#define b07 unused
+#define b14 unused
+#define b15 unused
+#define b16 unused
+#define b17 unused
+#endif
+#define l_copy(y, x)    s(y,0) = s(x,0); s(y,1) = s(x,1); \
+                        s(y,2) = s(x,2); s(y,3) = s(x,3);
+#define state_in(y,x,k) si(y,x,k,0); si(y,x,k,1); si(y,x,k,2); si(y,x,k,3)
+#define state_out(y,x)  so(y,x,0); so(y,x,1); so(y,x,2); so(y,x,3)
+#define round(rm,y,x,k) rm(y,x,k,0); rm(y,x,k,1); rm(y,x,k,2); rm(y,x,k,3)
+
+#elif AES_BLOCK_SIZE == 24
+
+#if defined(ARRAYS)
+#define locals(y,x)     x[6],y[6]
+#else
+#define locals(y,x)     x##0,x##1,x##2,x##3,x##4,x##5, \
+                        y##0,y##1,y##2,y##3,y##4,y##5
+#define b06 unused
+#define b07 unused
+#define b16 unused
+#define b17 unused
+#endif
+#define l_copy(y, x)    s(y,0) = s(x,0); s(y,1) = s(x,1); \
+                        s(y,2) = s(x,2); s(y,3) = s(x,3); \
+                        s(y,4) = s(x,4); s(y,5) = s(x,5);
+#define state_in(y,x,k) si(y,x,k,0); si(y,x,k,1); si(y,x,k,2); \
+                        si(y,x,k,3); si(y,x,k,4); si(y,x,k,5)
+#define state_out(y,x)  so(y,x,0); so(y,x,1); so(y,x,2); \
+                        so(y,x,3); so(y,x,4); so(y,x,5)
+#define round(rm,y,x,k) rm(y,x,k,0); rm(y,x,k,1); rm(y,x,k,2); \
+                        rm(y,x,k,3); rm(y,x,k,4); rm(y,x,k,5)
+#else
+
+#if defined(ARRAYS)
+#define locals(y,x)     x[8],y[8]
+#else
+#define locals(y,x)     x##0,x##1,x##2,x##3,x##4,x##5,x##6,x##7, \
+                        y##0,y##1,y##2,y##3,y##4,y##5,y##6,y##7
+#endif
+#define l_copy(y, x)    s(y,0) = s(x,0); s(y,1) = s(x,1); \
+                        s(y,2) = s(x,2); s(y,3) = s(x,3); \
+                        s(y,4) = s(x,4); s(y,5) = s(x,5); \
+                        s(y,6) = s(x,6); s(y,7) = s(x,7);
+
+#if AES_BLOCK_SIZE == 32
+
+#define state_in(y,x,k) si(y,x,k,0); si(y,x,k,1); si(y,x,k,2); si(y,x,k,3); \
+                        si(y,x,k,4); si(y,x,k,5); si(y,x,k,6); si(y,x,k,7)
+#define state_out(y,x)  so(y,x,0); so(y,x,1); so(y,x,2); so(y,x,3); \
+                        so(y,x,4); so(y,x,5); so(y,x,6); so(y,x,7)
+#define round(rm,y,x,k) rm(y,x,k,0); rm(y,x,k,1); rm(y,x,k,2); rm(y,x,k,3); \
+                        rm(y,x,k,4); rm(y,x,k,5); rm(y,x,k,6); rm(y,x,k,7)
+#else
+
+#define state_in(y,x,k) \
+switch(nc) \
+{   case 8: si(y,x,k,7); si(y,x,k,6); \
+    case 6: si(y,x,k,5); si(y,x,k,4); \
+    case 4: si(y,x,k,3); si(y,x,k,2); \
+            si(y,x,k,1); si(y,x,k,0); \
+}
+
+#define state_out(y,x) \
+switch(nc) \
+{   case 8: so(y,x,7); so(y,x,6); \
+    case 6: so(y,x,5); so(y,x,4); \
+    case 4: so(y,x,3); so(y,x,2); \
+            so(y,x,1); so(y,x,0); \
+}
+
+#if defined(FAST_VARIABLE)
+
+#define round(rm,y,x,k) \
+switch(nc) \
+{   case 8: rm(y,x,k,7); rm(y,x,k,6); \
+            rm(y,x,k,5); rm(y,x,k,4); \
+            rm(y,x,k,3); rm(y,x,k,2); \
+            rm(y,x,k,1); rm(y,x,k,0); \
+            break; \
+    case 6: rm(y,x,k,5); rm(y,x,k,4); \
+            rm(y,x,k,3); rm(y,x,k,2); \
+            rm(y,x,k,1); rm(y,x,k,0); \
+            break; \
+    case 4: rm(y,x,k,3); rm(y,x,k,2); \
+            rm(y,x,k,1); rm(y,x,k,0); \
+            break; \
+}
+#else
+
+#define round(rm,y,x,k) \
+switch(nc) \
+{   case 8: rm(y,x,k,7); rm(y,x,k,6); \
+    case 6: rm(y,x,k,5); rm(y,x,k,4); \
+    case 4: rm(y,x,k,3); rm(y,x,k,2); \
+            rm(y,x,k,1); rm(y,x,k,0); \
+}
+
+#endif
+
+#endif
+#endif
+
+void aes_encrypt(const aes_context *cx, const unsigned char in_blk[], unsigned char out_blk[])
+{   u_int32_t        locals(b0, b1);
+    const u_int32_t  *kp = cx->aes_e_key;
+
+#if !defined(ONE_TABLE) && !defined(FOUR_TABLES)
+    u_int32_t        f2;
+#endif
+
+    state_in(b0, in_blk, kp); kp += nc;
+
+#if defined(UNROLL)
+
+    switch(cx->aes_Nrnd)
+    {
+    case 14:    round(fwd_rnd,  b1, b0, kp         ); 
+                round(fwd_rnd,  b0, b1, kp + nc    ); kp += 2 * nc;
+    case 12:    round(fwd_rnd,  b1, b0, kp         ); 
+                round(fwd_rnd,  b0, b1, kp + nc    ); kp += 2 * nc;
+    case 10:    round(fwd_rnd,  b1, b0, kp         );             
+                round(fwd_rnd,  b0, b1, kp +     nc);
+                round(fwd_rnd,  b1, b0, kp + 2 * nc); 
+                round(fwd_rnd,  b0, b1, kp + 3 * nc);
+                round(fwd_rnd,  b1, b0, kp + 4 * nc); 
+                round(fwd_rnd,  b0, b1, kp + 5 * nc);
+                round(fwd_rnd,  b1, b0, kp + 6 * nc); 
+                round(fwd_rnd,  b0, b1, kp + 7 * nc);
+                round(fwd_rnd,  b1, b0, kp + 8 * nc);
+                round(fwd_lrnd, b0, b1, kp + 9 * nc);
+    }
+
+#elif defined(PARTIAL_UNROLL)
+    {   u_int32_t    rnd;
+
+        for(rnd = 0; rnd < (cx->aes_Nrnd >> 1) - 1; ++rnd)
+        {
+            round(fwd_rnd, b1, b0, kp); 
+            round(fwd_rnd, b0, b1, kp + nc); kp += 2 * nc;
+        }
+
+        round(fwd_rnd,  b1, b0, kp);
+        round(fwd_lrnd, b0, b1, kp + nc);
+    }
+#else
+    {   u_int32_t    rnd;
+
+        for(rnd = 0; rnd < cx->aes_Nrnd - 1; ++rnd)
+        {
+            round(fwd_rnd, b1, b0, kp); 
+            l_copy(b0, b1); kp += nc;
+        }
+
+        round(fwd_lrnd, b0, b1, kp);
+    }
+#endif
+
+    state_out(out_blk, b0);
+}
+
+void aes_decrypt(const aes_context *cx, const unsigned char in_blk[], unsigned char out_blk[])
+{   u_int32_t        locals(b0, b1);
+    const u_int32_t  *kp = cx->aes_d_key;
+
+#if !defined(ONE_TABLE) && !defined(FOUR_TABLES)
+    u_int32_t        f2, f4, f8, f9; 
+#endif
+
+    state_in(b0, in_blk, kp); kp += nc;
+
+#if defined(UNROLL)
+
+    switch(cx->aes_Nrnd)
+    {
+    case 14:    round(inv_rnd,  b1, b0, kp         );
+                round(inv_rnd,  b0, b1, kp + nc    ); kp += 2 * nc;
+    case 12:    round(inv_rnd,  b1, b0, kp         );
+                round(inv_rnd,  b0, b1, kp + nc    ); kp += 2 * nc;
+    case 10:    round(inv_rnd,  b1, b0, kp         );             
+                round(inv_rnd,  b0, b1, kp +     nc);
+                round(inv_rnd,  b1, b0, kp + 2 * nc); 
+                round(inv_rnd,  b0, b1, kp + 3 * nc);
+                round(inv_rnd,  b1, b0, kp + 4 * nc); 
+                round(inv_rnd,  b0, b1, kp + 5 * nc);
+                round(inv_rnd,  b1, b0, kp + 6 * nc); 
+                round(inv_rnd,  b0, b1, kp + 7 * nc);
+                round(inv_rnd,  b1, b0, kp + 8 * nc);
+                round(inv_lrnd, b0, b1, kp + 9 * nc);
+    }
+
+#elif defined(PARTIAL_UNROLL)
+    {   u_int32_t    rnd;
+
+        for(rnd = 0; rnd < (cx->aes_Nrnd >> 1) - 1; ++rnd)
+        {
+            round(inv_rnd, b1, b0, kp); 
+            round(inv_rnd, b0, b1, kp + nc); kp += 2 * nc;
+        }
+
+        round(inv_rnd,  b1, b0, kp);
+        round(inv_lrnd, b0, b1, kp + nc);
+    }
+#else
+    {   u_int32_t    rnd;
+
+        for(rnd = 0; rnd < cx->aes_Nrnd - 1; ++rnd)
+        {
+            round(inv_rnd, b1, b0, kp); 
+            l_copy(b0, b1); kp += nc;
+        }
+
+        round(inv_lrnd, b0, b1, kp);
+    }
+#endif
+
+    state_out(out_blk, b0);
+}
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/aes/aes_cbc.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,46 @@
+/*
+// I retain copyright in this code but I encourage its free use provided
+// that I don't carry any responsibility for the results. I am especially 
+// happy to see it used in free and open source software. If you do use 
+// it I would appreciate an acknowledgement of its origin in the code or
+// the product that results and I would also appreciate knowing a little
+// about the use to which it is being put. I am grateful to Frank Yellin
+// for some ideas that are used in this implementation.
+//
+// Dr B. R. Gladman <brg@gladman.uk.net> 6th April 2001.
+//
+// This is an implementation of the AES encryption algorithm (Rijndael)
+// designed by Joan Daemen and Vincent Rijmen. This version is designed
+// to provide both fixed and dynamic block and key lengths and can also 
+// run with either big or little endian internal byte order (see aes.h). 
+// It inputs block and key lengths in bytes with the legal values being 
+// 16, 24 and 32.
+*
+*/
+
+#ifdef __KERNEL__
+#include <linux/types.h>
+#else
+#include <sys/types.h>
+#endif
+#include "crypto/aes_cbc.h"
+#include "crypto/cbc_generic.h"
+
+/* returns bool success */
+int AES_set_key(aes_context *aes_ctx, const u_int8_t *key, int keysize) {
+       aes_set_key(aes_ctx, key, keysize, 0);
+       return 1;       
+}
+CBC_IMPL_BLK16(AES_cbc_encrypt, aes_context, u_int8_t *, aes_encrypt, aes_decrypt);
+
+
+/*
+ * $Log: aes_cbc.c,v $
+ * Revision 1.2  2004-07-10 07:48:40  mcr
+ * Moved from linux/crypto/ciphers/aes/aes_cbc.c,v
+ *
+ * Revision 1.1  2004/04/06 02:48:12  mcr
+ *     pullup of AES cipher from alg-branch.
+ *
+ *
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/aes/aes_xcbc_mac.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,67 @@
+#ifdef __KERNEL__
+#include <linux/types.h>
+#include <linux/kernel.h>
+#define DEBUG(x) 
+#else
+#include <stdio.h>
+#include <sys/types.h>
+#define DEBUG(x) x
+#endif
+
+#include "crypto/aes.h"
+#include "crypto/aes_xcbc_mac.h"
+
+int AES_xcbc_mac_set_key(aes_context_mac *ctxm, const u_int8_t *key, int keylen)
+{
+       int ret=1;
+       aes_block kn[3] = { 
+               { 0x01010101, 0x01010101, 0x01010101, 0x01010101 },
+               { 0x02020202, 0x02020202, 0x02020202, 0x02020202 },
+               { 0x03030303, 0x03030303, 0x03030303, 0x03030303 },
+       };
+       aes_set_key(&ctxm->ctx_k1, key, keylen, 0);
+       aes_encrypt(&ctxm->ctx_k1, (u_int8_t *) kn[0], (u_int8_t *) kn[0]);
+       aes_encrypt(&ctxm->ctx_k1, (u_int8_t *) kn[1], (u_int8_t *) ctxm->k2);
+       aes_encrypt(&ctxm->ctx_k1, (u_int8_t *) kn[2], (u_int8_t *) ctxm->k3);
+       aes_set_key(&ctxm->ctx_k1, (u_int8_t *) kn[0], 16, 0);
+       return ret;
+}
+static void do_pad_xor(u_int8_t *out, const u_int8_t *in, int len) {
+       int pos=0;
+       for (pos=1; pos <= 16; pos++, in++, out++) {
+               if (pos <= len)
+                       *out ^= *in;
+               if (pos > len) {
+                       DEBUG(printf("put 0x80 at pos=%d\n", pos));
+                       *out ^= 0x80;
+                       break;
+               }
+       }
+}
+static void xor_block(aes_block res, const aes_block op) {
+       res[0] ^= op[0];
+       res[1] ^= op[1];
+       res[2] ^= op[2];
+       res[3] ^= op[3];
+}
+int AES_xcbc_mac_hash(const aes_context_mac *ctxm, const u_int8_t * in, int ilen, u_int8_t hash[16]) {
+       int ret=ilen;
+       u_int32_t out[4] = { 0, 0, 0, 0 }; 
+       for (; ilen > 16 ; ilen-=16) {
+               xor_block(out, (const u_int32_t*) &in[0]);
+               aes_encrypt(&ctxm->ctx_k1, in, (u_int8_t *)&out[0]);
+               in+=16; 
+       }
+       do_pad_xor((u_int8_t *)&out, in, ilen);
+       if (ilen==16) {
+               DEBUG(printf("using k3\n"));
+               xor_block(out, ctxm->k3);
+       }
+       else 
+       {
+               DEBUG(printf("using k2\n"));
+               xor_block(out, ctxm->k2);
+       }
+       aes_encrypt(&ctxm->ctx_k1, (u_int8_t *)out, hash);
+       return ret;
+} 
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/aes/ipsec_alg_aes.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,296 @@
+/*
+ * ipsec_alg AES cipher stubs
+ *
+ * Author: JuanJo Ciarlante <jjo-ipsec@mendoza.gov.ar>
+ * 
+ * ipsec_alg_aes.c,v 1.1.2.1 2003/11/21 18:12:23 jjo Exp
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * Fixes by:
+ *     PK:     Pawel Krawczyk <kravietz@aba.krakow.pl>
+ * Fixes list:
+ *     PK:     make XCBC comply with latest draft (keylength)
+ *
+ */
+#ifndef AUTOCONF_INCLUDED
+#include <linux/config.h>
+#endif
+#include <linux/version.h>
+
+/*     
+ *     special case: ipsec core modular with this static algo inside:
+ *     must avoid MODULE magic for this file
+ */
+#if defined(CONFIG_KLIPS_MODULE) && defined(CONFIG_KLIPS_ENC_AES)
+#undef MODULE
+#endif
+
+#include <linux/module.h>
+#include <linux/init.h>
+
+#include <linux/kernel.h> /* printk() */
+#include <linux/errno.h>  /* error codes */
+#include <linux/types.h>  /* size_t */
+#include <linux/string.h>
+
+/* Check if __exit is defined, if not null it */
+#ifndef __exit
+#define __exit
+#endif
+
+/*     Low freeswan header coupling    */
+#include "openswan/ipsec_alg.h"
+#include "crypto/aes_cbc.h"
+
+#define CONFIG_KLIPS_ENC_AES_MAC 1
+
+#define AES_CONTEXT_T aes_context
+static int debug_aes=0;
+static int test_aes=0;
+static int excl_aes=0;
+static int keyminbits=0;
+static int keymaxbits=0;
+#if defined(CONFIG_KLIPS_ENC_AES_MODULE)
+MODULE_AUTHOR("JuanJo Ciarlante <jjo-ipsec@mendoza.gov.ar>");
+#ifdef module_param
+module_param(debug_aes,int,0600)
+module_param(test_aes,int,0600)
+module_param(excl_aes,int,0600)
+module_param(keyminbits,int,0600)
+module_param(keymaxbits,int,0600)
+#else
+MODULE_PARM(debug_aes, "i");
+MODULE_PARM(test_aes, "i");
+MODULE_PARM(excl_aes, "i");
+MODULE_PARM(keyminbits, "i");
+MODULE_PARM(keymaxbits, "i");
+#endif
+#endif
+
+#if CONFIG_KLIPS_ENC_AES_MAC
+#include "crypto/aes_xcbc_mac.h"
+
+/*     
+ *     Not IANA number yet (draft-ietf-ipsec-ciph-aes-xcbc-mac-00.txt).
+ *     We use 9 for non-modular algorithm and none for modular, thus
+ *     forcing user to specify one on module load. -kravietz
+ */
+#ifdef MODULE
+static int auth_id=0;
+#else
+static int auth_id=9;
+#endif
+#ifdef module_param
+module_param(auth_id, int, 0600);
+#else
+MODULE_PARM(auth_id, "i");
+#endif
+#endif
+
+#define ESP_AES                        12      /* truely _constant_  :)  */
+
+/* 128, 192 or 256 */
+#define ESP_AES_KEY_SZ_MIN     16      /* 128 bit secret key */
+#define ESP_AES_KEY_SZ_MAX     32      /* 256 bit secret key */
+#define ESP_AES_CBC_BLK_LEN    16      /* AES-CBC block size */
+
+/* Values according to draft-ietf-ipsec-ciph-aes-xcbc-mac-02.txt
+ * -kravietz
+ */
+#define ESP_AES_MAC_KEY_SZ     16      /* 128 bit MAC key */
+#define ESP_AES_MAC_BLK_LEN    16      /* 128 bit block */
+
+static int _aes_set_key(struct ipsec_alg_enc *alg,
+                       __u8 * key_e, const __u8 * key,
+                       size_t keysize)
+{
+       int ret;
+       AES_CONTEXT_T *ctx=(AES_CONTEXT_T*)key_e;
+       ret=AES_set_key(ctx, key, keysize)!=0? 0: -EINVAL;
+       if (debug_aes > 0)
+               printk(KERN_DEBUG "klips_debug:_aes_set_key:"
+                               "ret=%d key_e=%p key=%p keysize=%ld\n",
+                                ret, key_e, key, (unsigned long int) keysize);
+       return ret;
+}
+
+static int _aes_cbc_encrypt(struct ipsec_alg_enc *alg, __u8 * key_e,
+                           __u8 * in, int ilen, const __u8 * iv,
+                           int encrypt)
+{
+       AES_CONTEXT_T *ctx=(AES_CONTEXT_T*)key_e;
+       if (debug_aes > 0)
+               printk(KERN_DEBUG "klips_debug:_aes_cbc_encrypt:"
+                               "key_e=%p in=%p ilen=%d iv=%p encrypt=%d\n",
+                               key_e, in, ilen, iv, encrypt);
+       return AES_cbc_encrypt(ctx, in, in, ilen, iv, encrypt);
+}
+#if CONFIG_KLIPS_ENC_AES_MAC
+static int _aes_mac_set_key(struct ipsec_alg_auth *alg, __u8 * key_a, const __u8 * key, int keylen) {
+       aes_context_mac *ctxm=(aes_context_mac *)key_a;
+       return AES_xcbc_mac_set_key(ctxm, key, keylen)? 0 : -EINVAL;
+}
+static int _aes_mac_hash(struct ipsec_alg_auth *alg, __u8 * key_a, const __u8 * dat, int len, __u8 * hash, int hashlen) {
+       int ret;
+       char hash_buf[16];
+       aes_context_mac *ctxm=(aes_context_mac *)key_a;
+       ret=AES_xcbc_mac_hash(ctxm, dat, len, hash_buf);
+       memcpy(hash, hash_buf, hashlen);
+       return ret;
+}
+static struct ipsec_alg_auth ipsec_alg_AES_MAC = {
+       ixt_common: { ixt_version:      IPSEC_ALG_VERSION,
+                     ixt_refcnt:       ATOMIC_INIT(0),
+                     ixt_name:         "aes_mac",
+                     ixt_blocksize:    ESP_AES_MAC_BLK_LEN,
+                     ixt_support: {
+                       ias_exttype:    IPSEC_ALG_TYPE_AUTH,
+                       ias_id:         0,
+                       ias_keyminbits: ESP_AES_MAC_KEY_SZ*8,
+                       ias_keymaxbits: ESP_AES_MAC_KEY_SZ*8,
+               },
+       },
+#if defined(CONFIG_KLIPS_ENC_AES_MODULE)
+       ixt_module:     THIS_MODULE,
+#endif
+       ixt_a_keylen:   ESP_AES_MAC_KEY_SZ,
+       ixt_a_ctx_size: sizeof(aes_context_mac),
+       ixt_a_hmac_set_key:     _aes_mac_set_key,
+       ixt_a_hmac_hash:_aes_mac_hash,
+};
+#endif /* CONFIG_KLIPS_ENC_AES_MAC */
+static struct ipsec_alg_enc ipsec_alg_AES = {
+       ixt_common: { ixt_version:      IPSEC_ALG_VERSION,
+                     ixt_refcnt:       ATOMIC_INIT(0),
+                     ixt_name:         "aes",
+                     ixt_blocksize:    ESP_AES_CBC_BLK_LEN, 
+                     ixt_support: {
+                       ias_exttype:    IPSEC_ALG_TYPE_ENCRYPT,
+                       ias_id:         ESP_AES,
+                       ias_keyminbits: ESP_AES_KEY_SZ_MIN*8,
+                       ias_keymaxbits: ESP_AES_KEY_SZ_MAX*8,
+               },
+       },
+#if defined(CONFIG_KLIPS_ENC_AES_MODULE)
+       ixt_module:     THIS_MODULE,
+#endif
+       ixt_e_keylen:   ESP_AES_KEY_SZ_MAX,
+       ixt_e_ctx_size: sizeof(AES_CONTEXT_T),
+       ixt_e_set_key:  _aes_set_key,
+       ixt_e_cbc_encrypt:_aes_cbc_encrypt,
+};
+
+#if defined(CONFIG_KLIPS_ENC_AES_MODULE)
+IPSEC_ALG_MODULE_INIT_MOD( ipsec_aes_init )
+#else
+IPSEC_ALG_MODULE_INIT_STATIC( ipsec_aes_init )
+#endif
+{
+       int ret, test_ret;
+
+       if (keyminbits)
+               ipsec_alg_AES.ixt_common.ixt_support.ias_keyminbits=keyminbits;
+       if (keymaxbits) {
+               ipsec_alg_AES.ixt_common.ixt_support.ias_keymaxbits=keymaxbits;
+               if (keymaxbits*8>ipsec_alg_AES.ixt_common.ixt_support.ias_keymaxbits)
+                       ipsec_alg_AES.ixt_e_keylen=keymaxbits*8;
+       }
+       if (excl_aes) ipsec_alg_AES.ixt_common.ixt_state |= IPSEC_ALG_ST_EXCL;
+       ret=register_ipsec_alg_enc(&ipsec_alg_AES);
+       printk("ipsec_aes_init(alg_type=%d alg_id=%d name=%s): ret=%d\n", 
+                       ipsec_alg_AES.ixt_common.ixt_support.ias_exttype, 
+                       ipsec_alg_AES.ixt_common.ixt_support.ias_id, 
+                       ipsec_alg_AES.ixt_common.ixt_name, 
+                       ret);
+       if (ret==0 && test_aes) {
+               test_ret=ipsec_alg_test(
+                               ipsec_alg_AES.ixt_common.ixt_support.ias_exttype ,
+                               ipsec_alg_AES.ixt_common.ixt_support.ias_id, 
+                               test_aes);
+               printk("ipsec_aes_init(alg_type=%d alg_id=%d): test_ret=%d\n", 
+                               ipsec_alg_AES.ixt_common.ixt_support.ias_exttype , 
+                               ipsec_alg_AES.ixt_common.ixt_support.ias_id, 
+                               test_ret);
+       }
+#if CONFIG_KLIPS_ENC_AES_MAC
+       if (auth_id!=0){
+               int ret;
+               ipsec_alg_AES_MAC.ixt_common.ixt_support.ias_id=auth_id;
+               ret=register_ipsec_alg_auth(&ipsec_alg_AES_MAC);
+               printk("ipsec_aes_init(alg_type=%d alg_id=%d name=%s): ret=%d\n", 
+                               ipsec_alg_AES_MAC.ixt_common.ixt_support.ias_exttype, 
+                               ipsec_alg_AES_MAC.ixt_common.ixt_support.ias_id, 
+                               ipsec_alg_AES_MAC.ixt_common.ixt_name, 
+                               ret);
+               if (ret==0 && test_aes) {
+                       test_ret=ipsec_alg_test(
+                                       ipsec_alg_AES_MAC.ixt_common.ixt_support.ias_exttype,
+                                       ipsec_alg_AES_MAC.ixt_common.ixt_support.ias_id, 
+                                       test_aes);
+                       printk("ipsec_aes_init(alg_type=%d alg_id=%d): test_ret=%d\n", 
+                                       ipsec_alg_AES_MAC.ixt_common.ixt_support.ias_exttype, 
+                                       ipsec_alg_AES_MAC.ixt_common.ixt_support.ias_id, 
+                                       test_ret);
+               }
+       } else {
+               printk(KERN_DEBUG "klips_debug: experimental ipsec_alg_AES_MAC not registered [Ok] (auth_id=%d)\n", auth_id);
+       }
+#endif /* CONFIG_KLIPS_ENC_AES_MAC */
+       return ret;
+}
+
+#if defined(CONFIG_KLIPS_ENC_AES_MODULE)
+IPSEC_ALG_MODULE_EXIT_MOD( ipsec_aes_fini )
+#else
+IPSEC_ALG_MODULE_EXIT_STATIC( ipsec_aes_fini )
+#endif
+{
+#if CONFIG_KLIPS_ENC_AES_MAC
+       if (auth_id) unregister_ipsec_alg_auth(&ipsec_alg_AES_MAC);
+#endif /* CONFIG_KLIPS_ENC_AES_MAC */
+       unregister_ipsec_alg_enc(&ipsec_alg_AES);
+       return;
+}
+#ifdef MODULE_LICENSE
+MODULE_LICENSE("GPL");
+#endif
+
+#if 0  /* +NOT_YET */
+#ifndef MODULE
+/*
+ *     This is intended for static module setups, currently
+ *     doesn't work for modular ipsec.o with static algos inside
+ */
+static int setup_keybits(const char *str)
+{
+       unsigned aux;
+       char *end;
+
+       aux = simple_strtoul(str,&end,0);
+       if (aux != 128 && aux != 192 && aux != 256)
+               return 0;
+       keyminbits = aux;
+
+       if (*end == 0 || *end != ',')
+               return 1;
+       str=end+1;
+       aux = simple_strtoul(str, NULL, 0);
+       if (aux != 128 && aux != 192 && aux != 256)
+               return 0;
+       if (aux >= keyminbits)
+               keymaxbits = aux;
+       return 1;
+}
+__setup("ipsec_aes_keybits=", setup_keybits);
+#endif
+#endif
+
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/alg/Config.alg_aes.in     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,3 @@
+if [ "$CONFIG_IPSEC_ALG" = "y" ]; then
+  tristate '        AES encryption algorithm' CONFIG_IPSEC_ENC_AES
+fi
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/alg/Config.alg_cryptoapi.in     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,6 @@
+if [ "$CONFIG_IPSEC_ALG" = "y" ]; then
+  dep_tristate '        CRYPTOAPI ciphers support (needs cryptoapi patch)' CONFIG_IPSEC_ALG_CRYPTOAPI $CONFIG_CRYPTO
+  if [ "$CONFIG_IPSEC_ALG_CRYPTOAPI" != "n" ]; then
+    bool '          CRYPTOAPI proprietary ciphers ' CONFIG_IPSEC_ALG_NON_LIBRE
+  fi
+fi
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/alg/Config.in     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,3 @@
+#Placeholder
+source net/ipsec/alg/Config.alg_aes.in
+source net/ipsec/alg/Config.alg_cryptoapi.in
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/alg/Makefile     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,112 @@
+# Makefile,v 1.1.2.1 2003/11/21 18:12:23 jjo Exp
+ifeq ($(strip $(KLIPSMODULE)),)
+FREESWANSRCDIR=.
+else
+FREESWANSRCDIR=../../../..
+endif
+ifeq ($(strip $(KLIPS_TOP)),)
+KLIPS_TOP=../../..
+override EXTRA_CFLAGS += -I$(KLIPS_TOP)/include
+endif
+
+ifeq ($(CONFIG_IPSEC_DEBUG),y)
+override EXTRA_CFLAGS += -g
+endif
+
+# LIBCRYPTO normally comes as an argument from "parent" Makefile
+# (this applies both to FS' "make module" and eg. Linux' "make modules"
+# But make dep doest follow same evaluations, so we need this default:
+LIBCRYPTO=$(TOPDIR)/lib/libcrypto
+
+override EXTRA_CFLAGS += -I$(LIBCRYPTO)/include
+override EXTRA_CFLAGS += -Wall -Wpointer-arith -Wstrict-prototypes
+
+MOD_LIST_NAME := NET_MISC_MODULES
+
+#O_TARGET := static_init.o
+
+subdir-  := 
+subdir-n := 
+subdir-y :=
+subdir-m :=
+
+obj-y := static_init.o
+
+ARCH_ASM-y :=
+ARCH_ASM-$(CONFIG_M586)                := i586
+ARCH_ASM-$(CONFIG_M586TSC)     := i586
+ARCH_ASM-$(CONFIG_M586MMX)     := i586
+ARCH_ASM-$(CONFIG_MK6)         := i586
+ARCH_ASM-$(CONFIG_M686)                := i686
+ARCH_ASM-$(CONFIG_MPENTIUMIII) := i686
+ARCH_ASM-$(CONFIG_MPENTIUM4)   := i686
+ARCH_ASM-$(CONFIG_MK7)         := i686
+ARCH_ASM-$(CONFIG_MCRUSOE)     := i586
+ARCH_ASM-$(CONFIG_MWINCHIPC6)  := i586
+ARCH_ASM-$(CONFIG_MWINCHIP2)   := i586
+ARCH_ASM-$(CONFIG_MWINCHIP3D)  := i586
+ARCH_ASM-$(CONFIG_USERMODE)    := i586
+
+ARCH_ASM :=$(ARCH_ASM-y)
+ifdef NO_ASM
+ARCH_ASM :=
+endif
+
+# The algorithm makefiles may put dependences, short-circuit them
+null:
+
+makefiles=$(filter-out %.preipsec, $(wildcard Makefile.alg_*))
+ifneq ($(makefiles),)
+#include Makefile.alg_aes
+#include Makefile.alg_aes-opt
+include $(makefiles)
+endif
+
+# These rules translate from new to old makefile rules
+# Translate to Rules.make lists.
+multi-used      := $(filter $(list-multi), $(obj-y) $(obj-m))
+multi-objs      := $(foreach m, $(multi-used), $($(basename $(m))-objs))
+active-objs     := $(sort $(multi-objs) $(obj-y) $(obj-m))
+O_OBJS          := $(obj-y)
+M_OBJS          := $(obj-m)
+MIX_OBJS        := $(filter $(export-objs), $(active-objs))
+#OX_OBJS := $(export-objs)
+SUB_DIRS := $(subdir-y)
+ALL_SUB_DIRS := $(subdir-y) $(subdir-m)
+MOD_SUB_DIRS := $(subdir-m)
+
+
+static_init_mod.o: $(obj-y) 
+       rm -f $@
+       $(LD) $(LD_EXTRAFLAGS) $(obj-y) -r -o $@
+
+perlasm: ../../../crypto/ciphers/des/asm/perlasm
+       ln -sf $? $@
+
+$(obj-y) $(obj-m): $(TOPDIR)/include/linux/config.h $(TOPDIR)/include/linux/autoconf.h $(KLIPS_TOP)/include/freeswan/ipsec_alg.h
+$(alg_obj-y) $(alg_obj-m): perlasm $(TOPDIR)/include/linux/config.h $(TOPDIR)/include/linux/autoconf.h $(KLIPS_TOP)/include/freeswan/ipsec_alg.h
+
+
+all_alg_modules: perlasm $(ALG_MODULES)
+       @echo "ALG_MODULES=$(ALG_MODULES)"
+
+
+#
+# Construct alg. init. function: call ipsec_ALGO_init() for every static algo
+# Needed when there are static algos (with static or modular ipsec.o)
+#
+static_init.c: $(TOPDIR)/include/linux/autoconf.h Makefile $(makefiles) scripts/mk-static_init.c.sh
+       @echo "Re-creating $@"
+       $(SHELL) scripts/mk-static_init.c.sh $(static_init-func-y) > $@
+
+clean:
+       @for i in $(ALG_SUBDIRS);do test -d $$i && make -C $$i clean;done;exit 0
+       @find . -type l  -exec rm -f {} \;
+       -rm -f perlasm
+       -rm -rf $(ALG_SUBDIRS)
+       -rm -f *.o static_init.c
+
+ifdef TOPDIR
+include $(TOPDIR)/Rules.make
+endif
+
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/alg/Makefile.alg_aes     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,18 @@
+MOD_AES := ipsec_aes.o
+
+ALG_MODULES += $(MOD_AES)
+ALG_SUBDIRS += libaes
+
+obj-$(CONFIG_IPSEC_ALG_AES) += $(MOD_AES)
+static_init-func-$(CONFIG_IPSEC_ALG_AES)+= ipsec_aes_init
+alg_obj-$(CONFIG_IPSEC_ALG_AES) += ipsec_alg_aes.o
+
+AES_OBJS := ipsec_alg_aes.o $(LIBCRYPTO)/libaes/libaes.a 
+
+
+$(MOD_AES): $(AES_OBJS) 
+       $(LD) $(EXTRA_LDFLAGS) -r $(AES_OBJS) -o $@
+
+$(LIBCRYPTO)/libaes/libaes.a: 
+        $(MAKE) -C $(LIBCRYPTO)/libaes CC='$(CC)' 'ARCH_ASM=$(ARCH_ASM)' CFLAGS='$(CFLAGS) $(EXTRA_CFLAGS)' libaes.a
+
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/alg/Makefile.alg_cryptoapi     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,14 @@
+MOD_CRYPTOAPI := ipsec_cryptoapi.o
+
+ifneq ($(wildcard $(TOPDIR)/include/linux/crypto.h),)
+ALG_MODULES += $(MOD_CRYPTOAPI)
+obj-$(CONFIG_IPSEC_ALG_CRYPTOAPI) += $(MOD_CRYPTOAPI)
+static_init-func-$(CONFIG_IPSEC_ALG_CRYPTOAPI)+= ipsec_cryptoapi_init
+alg_obj-$(CONFIG_IPSEC_ALG_CRYPTOAPI) += ipsec_alg_cryptoapi.o
+else
+$(warning "Linux CryptoAPI (2.4.22+ or 2.6.x) not found, not building ipsec_cryptoapi.o")
+endif
+
+CRYPTOAPI_OBJS := ipsec_alg_cryptoapi.o 
+$(MOD_CRYPTOAPI): $(CRYPTOAPI_OBJS)
+       $(LD) -r $(CRYPTOAPI_OBJS) -o $@
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/alg/ipsec_alg_cryptoapi.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,442 @@
+/*
+ * ipsec_alg to linux cryptoapi GLUE
+ *
+ * Authors: CODE.ar TEAM
+ *     Harpo MAxx <harpo@linuxmendoza.org.ar>
+ *     JuanJo Ciarlante <jjo-ipsec@mendoza.gov.ar>
+ *     Luciano Ruete <docemeses@softhome.net>
+ * 
+ * ipsec_alg_cryptoapi.c,v 1.1.2.1 2003/11/21 18:12:23 jjo Exp
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * Example usage:
+ *   modinfo -p ipsec_cryptoapi   (quite useful info, including supported algos)
+ *   modprobe ipsec_cryptoapi
+ *   modprobe ipsec_cryptoapi test=1
+ *   modprobe ipsec_cryptoapi excl=1                     (exclusive cipher/algo)
+ *   modprobe ipsec_cryptoapi noauto=1  aes=1 twofish=1  (only these ciphers)
+ *   modprobe ipsec_cryptoapi aes=128,128                (force these keylens)
+ *   modprobe ipsec_cryptoapi des_ede3=0                 (everything but 3DES)
+ */
+#ifndef AUTOCONF_INCLUDED
+#include <linux/config.h>
+#endif
+#include <linux/version.h>
+
+/*     
+ *     special case: ipsec core modular with this static algo inside:
+ *     must avoid MODULE magic for this file
+ */
+#if CONFIG_IPSEC_MODULE && CONFIG_IPSEC_ALG_CRYPTOAPI
+#undef MODULE
+#endif
+
+#include <linux/module.h>
+#include <linux/init.h>
+
+#include <linux/kernel.h> /* printk() */
+#include <linux/errno.h>  /* error codes */
+#include <linux/types.h>  /* size_t */
+#include <linux/string.h>
+
+/* Check if __exit is defined, if not null it */
+#ifndef __exit
+#define __exit
+#endif
+
+/* warn the innocent */
+#if !defined (CONFIG_CRYPTO) && !defined (CONFIG_CRYPTO_MODULE)
+#warning "No linux CryptoAPI found, install 2.4.22+ or 2.6.x"
+#define NO_CRYPTOAPI_SUPPORT
+#endif
+/*     Low freeswan header coupling    */
+#include "openswan/ipsec_alg.h"
+
+#include <linux/crypto.h>
+#ifdef CRYPTO_API_VERSION_CODE
+#warning "Old CryptoAPI is not supported. Only linux-2.4.22+ or linux-2.6.x are supported"
+#define NO_CRYPTOAPI_SUPPORT
+#endif
+
+#ifdef NO_CRYPTOAPI_SUPPORT
+#warning "Building an unusable module :P"
+/* Catch old CryptoAPI by not allowing module to load */
+IPSEC_ALG_MODULE_INIT( ipsec_cryptoapi_init )
+{
+       printk(KERN_WARNING "ipsec_cryptoapi.o was not built on stock Linux CryptoAPI (2.4.22+ or 2.6.x), not loading.\n");
+       return -EINVAL;
+}
+#else
+#include <asm/scatterlist.h>
+#include <asm/pgtable.h>
+#include <linux/mm.h>
+
+#define CIPHERNAME_AES         "aes"
+#define CIPHERNAME_3DES                "des3_ede"
+#define CIPHERNAME_BLOWFISH    "blowfish"
+#define CIPHERNAME_CAST                "cast5"
+#define CIPHERNAME_SERPENT     "serpent"
+#define CIPHERNAME_TWOFISH     "twofish"
+
+#define ESP_3DES               3
+#define ESP_AES                        12
+#define ESP_BLOWFISH           7       /* truely _constant_  :)  */
+#define ESP_CAST               6       /* quite constant :) */
+#define ESP_SERPENT            252     /* from ipsec drafts */
+#define ESP_TWOFISH            253     /* from ipsec drafts */
+
+#define AH_MD5                 2
+#define AH_SHA                 3
+#define DIGESTNAME_MD5         "md5"
+#define DIGESTNAME_SHA1                "sha1"
+
+MODULE_AUTHOR("Juanjo Ciarlante, Harpo MAxx, Luciano Ruete");
+static int debug=0;
+static int test=0;
+static int excl=0;
+static int noauto = 0;
+
+static int des_ede3[] = {-1, -1};
+static int aes[] = {-1, -1};
+static int blowfish[] = {-1, -1};
+static int cast[] = {-1, -1};
+static int serpent[] = {-1, -1};
+static int twofish[] = {-1, -1};
+
+#ifdef module_param
+module_param(debug,int,0600);
+module_param(test,int,0600);
+module_param(ebug,int,0600);
+
+module_param(noauto,int,0600);
+module_param(ebug,int,0600);
+
+module_param_array(des_ede3,int,NULL,0);
+module_param(aes,int,NULL,0);
+module_param(blowfish,int,NULL,0);
+module_param(cast,int,NULL,0);
+module_param(serpent,int,NULL,0);
+module_param(twofish,int,NULL,0);
+#else
+MODULE_PARM(debug, "i");
+MODULE_PARM(test, "i");
+MODULE_PARM(excl, "i");
+
+MODULE_PARM(noauto,"i");
+
+MODULE_PARM(des_ede3,"1-2i");
+MODULE_PARM(aes,"1-2i");
+MODULE_PARM(blowfish,"1-2i");
+MODULE_PARM(cast,"1-2i");
+MODULE_PARM(serpent,"1-2i");
+MODULE_PARM(twofish,"1-2i");
+#endif
+
+MODULE_PARM_DESC(noauto, "Dont try all known algos, just setup enabled ones");
+
+MODULE_PARM_DESC(des_ede3, "0: disable | 1: force_enable | min,max: dontuse");
+MODULE_PARM_DESC(aes, "0: disable | 1: force_enable | min,max: keybitlens");
+MODULE_PARM_DESC(blowfish, "0: disable | 1: force_enable | min,max: keybitlens");
+MODULE_PARM_DESC(cast, "0: disable | 1: force_enable | min,max: keybitlens");
+MODULE_PARM_DESC(serpent, "0: disable | 1: force_enable | min,max: keybitlens");
+MODULE_PARM_DESC(twofish, "0: disable | 1: force_enable | min,max: keybitlens");
+
+struct ipsec_alg_capi_cipher {
+       const char *ciphername; /* cryptoapi's ciphername */
+       unsigned blocksize;
+       unsigned short minbits;
+       unsigned short maxbits;
+       int *parm;              /* lkm param for this cipher */
+       struct ipsec_alg_enc alg;       /* note it's not a pointer */
+};
+static struct ipsec_alg_capi_cipher alg_capi_carray[] = {
+       { CIPHERNAME_AES ,     16, 128, 256, aes    , { ixt_alg_id: ESP_AES, }},
+       { CIPHERNAME_TWOFISH , 16, 128, 256, twofish, { ixt_alg_id: ESP_TWOFISH, }},
+       { CIPHERNAME_SERPENT , 16, 128, 256, serpent, { ixt_alg_id: ESP_SERPENT, }},
+       { CIPHERNAME_CAST ,     8, 128, 128, cast   , { ixt_alg_id: ESP_CAST, }},
+       { CIPHERNAME_BLOWFISH , 8,  96, 448, blowfish,{ ixt_alg_id: ESP_BLOWFISH, }},
+       { CIPHERNAME_3DES ,     8, 192, 192, des_ede3,{ ixt_alg_id: ESP_3DES, }},
+       { NULL, 0, 0, 0, NULL, {} }
+};
+#ifdef NOT_YET
+struct ipsec_alg_capi_digest {
+       const char *digestname; /* cryptoapi's digestname */
+       struct digest_implementation *di;
+       struct ipsec_alg_auth alg;      /* note it's not a pointer */
+};
+static struct ipsec_alg_capi_cipher alg_capi_darray[] = {
+       { DIGESTNAME_MD5,     NULL, { ixt_alg_id: AH_MD5, }},
+       { DIGESTNAME_SHA1,    NULL, { ixt_alg_id: AH_SHA, }},
+       { NULL, NULL, {} }
+};
+#endif
+/*
+ *     "generic" linux cryptoapi setup_cipher() function
+ */
+int setup_cipher(const char *ciphername)
+{
+       return crypto_alg_available(ciphername, 0);
+}
+
+/*
+ *     setups ipsec_alg_capi_cipher "hyper" struct components, calling
+ *     register_ipsec_alg for cointaned ipsec_alg object
+ */
+static void _capi_destroy_key (struct ipsec_alg_enc *alg, __u8 *key_e);
+static __u8 * _capi_new_key (struct ipsec_alg_enc *alg, const __u8 *key, size_t keylen);
+static int _capi_cbc_encrypt(struct ipsec_alg_enc *alg, __u8 * key_e, __u8 * in, int ilen, const __u8 * iv, int encrypt);
+
+static int
+setup_ipsec_alg_capi_cipher(struct ipsec_alg_capi_cipher *cptr)
+{
+       int ret;
+       cptr->alg.ixt_version = IPSEC_ALG_VERSION;
+       cptr->alg.ixt_module = THIS_MODULE;
+       atomic_set (& cptr->alg.ixt_refcnt, 0);
+       strncpy (cptr->alg.ixt_name , cptr->ciphername, sizeof (cptr->alg.ixt_name));
+
+       cptr->alg.ixt_blocksize=cptr->blocksize;
+       cptr->alg.ixt_keyminbits=cptr->minbits;
+       cptr->alg.ixt_keymaxbits=cptr->maxbits;
+       cptr->alg.ixt_state = 0;
+       if (excl) cptr->alg.ixt_state |= IPSEC_ALG_ST_EXCL;
+       cptr->alg.ixt_e_keylen=cptr->alg.ixt_keymaxbits/8;
+       cptr->alg.ixt_e_ctx_size = 0;
+       cptr->alg.ixt_alg_type = IPSEC_ALG_TYPE_ENCRYPT;
+       cptr->alg.ixt_e_new_key = _capi_new_key;
+       cptr->alg.ixt_e_destroy_key = _capi_destroy_key;
+       cptr->alg.ixt_e_cbc_encrypt = _capi_cbc_encrypt;
+       cptr->alg.ixt_data = cptr;
+
+       ret=register_ipsec_alg_enc(&cptr->alg);
+       printk("setup_ipsec_alg_capi_cipher(): " 
+                       "alg_type=%d alg_id=%d name=%s "
+                       "keyminbits=%d keymaxbits=%d, ret=%d\n", 
+                               cptr->alg.ixt_alg_type, 
+                               cptr->alg.ixt_alg_id, 
+                               cptr->alg.ixt_name, 
+                               cptr->alg.ixt_keyminbits,
+                               cptr->alg.ixt_keymaxbits,
+                               ret);
+       return ret;
+}
+/*
+ *     called in ipsec_sa_wipe() time, will destroy key contexts
+ *     and do 1 unbind()
+ */
+static void 
+_capi_destroy_key (struct ipsec_alg_enc *alg, __u8 *key_e)
+{
+       struct crypto_tfm *tfm=(struct crypto_tfm*)key_e;
+       
+       if (debug > 0)
+               printk(KERN_DEBUG "klips_debug: _capi_destroy_key:"
+                               "name=%s key_e=%p \n",
+                               alg->ixt_name, key_e);
+       if (!key_e) {
+               printk(KERN_ERR "klips_debug: _capi_destroy_key:"
+                               "name=%s NULL key_e!\n",
+                               alg->ixt_name);
+               return;
+       }
+       crypto_free_tfm(tfm);
+}
+       
+/*
+ *     create new key context, need alg->ixt_data to know which
+ *     (of many) cipher inside this module is the target
+ */
+static __u8 *
+_capi_new_key (struct ipsec_alg_enc *alg, const __u8 *key, size_t keylen)
+{
+       struct ipsec_alg_capi_cipher *cptr;
+       struct crypto_tfm *tfm=NULL;
+
+       cptr = alg->ixt_data;
+       if (!cptr) {
+               printk(KERN_ERR "_capi_new_key(): "
+                               "NULL ixt_data (?!) for \"%s\" algo\n" 
+                               , alg->ixt_name);
+               goto err;
+       }
+       if (debug > 0)
+               printk(KERN_DEBUG "klips_debug:_capi_new_key:"
+                               "name=%s cptr=%p key=%p keysize=%d\n",
+                               alg->ixt_name, cptr, key, keylen);
+       
+       /*      
+        *      alloc tfm
+        */
+       tfm = crypto_alloc_tfm(cptr->ciphername, CRYPTO_TFM_MODE_CBC);
+       if (!tfm) {
+               printk(KERN_ERR "_capi_new_key(): "
+                               "NULL tfm for \"%s\" cryptoapi (\"%s\") algo\n" 
+                       , alg->ixt_name, cptr->ciphername);
+               goto err;
+       }
+       if (crypto_cipher_setkey(tfm, key, keylen) < 0) {
+               printk(KERN_ERR "_capi_new_key(): "
+                               "failed new_key() for \"%s\" cryptoapi algo (keylen=%d)\n" 
+                       , alg->ixt_name, keylen);
+               crypto_free_tfm(tfm);
+               tfm=NULL;
+       }
+err:
+       if (debug > 0)
+               printk(KERN_DEBUG "klips_debug:_capi_new_key:"
+                               "name=%s key=%p keylen=%d tfm=%p\n",
+                               alg->ixt_name, key, keylen, tfm);
+       return (__u8 *) tfm;
+}
+/*
+ *     core encryption function: will use cx->ci to call actual cipher's
+ *     cbc function
+ */
+static int 
+_capi_cbc_encrypt(struct ipsec_alg_enc *alg, __u8 * key_e, __u8 * in, int ilen, const __u8 * iv, int encrypt) {
+       int error =0;
+       struct crypto_tfm *tfm=(struct crypto_tfm *)key_e;
+       struct scatterlist sg = { 
+               .page = virt_to_page(in),
+               .offset = (unsigned long)(in) % PAGE_SIZE,
+               .length=ilen,
+       };
+       if (debug > 1)
+               printk(KERN_DEBUG "klips_debug:_capi_cbc_encrypt:"
+                               "key_e=%p "
+                               "in=%p out=%p ilen=%d iv=%p encrypt=%d\n"
+                               , key_e
+                               , in, in, ilen, iv, encrypt);
+       crypto_cipher_set_iv(tfm, iv, crypto_tfm_alg_ivsize(tfm));
+       if (encrypt)
+               error = crypto_cipher_encrypt (tfm, &sg, &sg, ilen);
+       else
+               error = crypto_cipher_decrypt (tfm, &sg, &sg, ilen);
+       if (debug > 1)
+               printk(KERN_DEBUG "klips_debug:_capi_cbc_encrypt:"
+                               "error=%d\n"
+                               , error);
+       return (error<0)? error : ilen;
+}
+/*
+ *     main initialization loop: for each cipher in list, do
+ *     1) setup cryptoapi cipher else continue
+ *     2) register ipsec_alg object
+ */
+static int
+setup_cipher_list (struct ipsec_alg_capi_cipher* clist) 
+{
+       struct ipsec_alg_capi_cipher *cptr;
+       /* foreach cipher in list ... */
+       for (cptr=clist;cptr->ciphername;cptr++) {
+               /* 
+                * see if cipher has been disabled (0) or
+                * if noauto set and not enabled (1)
+                */
+               if (cptr->parm[0] == 0 || (noauto && cptr->parm[0] < 0)) {
+                       if (debug>0)
+                               printk(KERN_INFO "setup_cipher_list(): "
+                                       "ciphername=%s skipped at user request: "
+                                       "noauto=%d parm[0]=%d parm[1]=%d\n"
+                                       , cptr->ciphername
+                                       , noauto
+                                       , cptr->parm[0]
+                                       , cptr->parm[1]);
+                       continue;
+               }
+               /* 
+                *      use a local ci to avoid touching cptr->ci,
+                *      if register ipsec_alg success then bind cipher
+                */
+               if( setup_cipher(cptr->ciphername) ) {
+                       if (debug > 0)
+                               printk(KERN_DEBUG "klips_debug:"
+                                               "setup_cipher_list():"
+                                               "ciphername=%s found\n"
+                               , cptr->ciphername);
+                       if (setup_ipsec_alg_capi_cipher(cptr) == 0) {
+                               
+                               
+                       } else {
+                               printk(KERN_ERR "klips_debug:"
+                                               "setup_cipher_list():"
+                                               "ciphername=%s failed ipsec_alg_register\n"
+                               , cptr->ciphername);
+                       }
+               } else {
+                       if (debug>0)
+                               printk(KERN_INFO "setup_cipher_list(): lookup for ciphername=%s: not found \n",
+                               cptr->ciphername);
+               }
+       }
+       return 0;
+}
+/*
+ *     deregister ipsec_alg objects and unbind ciphers
+ */
+static int
+unsetup_cipher_list (struct ipsec_alg_capi_cipher* clist) 
+{
+       struct ipsec_alg_capi_cipher *cptr;
+       /* foreach cipher in list ... */
+       for (cptr=clist;cptr->ciphername;cptr++) {
+               if (cptr->alg.ixt_state & IPSEC_ALG_ST_REGISTERED) {
+                       unregister_ipsec_alg_enc(&cptr->alg);
+               }
+       }
+       return 0;
+}
+/*
+ *     test loop for registered algos
+ */
+static int
+test_cipher_list (struct ipsec_alg_capi_cipher* clist) 
+{
+       int test_ret;
+       struct ipsec_alg_capi_cipher *cptr;
+       /* foreach cipher in list ... */
+       for (cptr=clist;cptr->ciphername;cptr++) {
+               if (cptr->alg.ixt_state & IPSEC_ALG_ST_REGISTERED) {
+                       test_ret=ipsec_alg_test(
+                                       cptr->alg.ixt_alg_type,
+                                       cptr->alg.ixt_alg_id, 
+                                       test);
+                       printk("test_cipher_list(alg_type=%d alg_id=%d): test_ret=%d\n", 
+                                       cptr->alg.ixt_alg_type, 
+                                       cptr->alg.ixt_alg_id, 
+                                       test_ret);
+               }
+       }
+       return 0;
+}
+
+IPSEC_ALG_MODULE_INIT( ipsec_cryptoapi_init )
+{
+       int ret, test_ret;
+       if ((ret=setup_cipher_list(alg_capi_carray)) < 0)
+               return  -EPROTONOSUPPORT;
+       if (ret==0 && test) {
+               test_ret=test_cipher_list(alg_capi_carray);
+       }
+       return ret;
+}
+IPSEC_ALG_MODULE_EXIT( ipsec_cryptoapi_fini )
+{
+       unsetup_cipher_list(alg_capi_carray);
+       return;
+}
+#ifdef MODULE_LICENSE
+MODULE_LICENSE("GPL");
+#endif
+
+EXPORT_NO_SYMBOLS;
+#endif /* NO_CRYPTOAPI_SUPPORT */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/alg/scripts/mk-static_init.c.sh     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,18 @@
+#!/bin/sh
+cat << EOF
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include "freeswan/ipsec_alg.h"
+$(for i in $*; do
+       test -z "$i" && continue
+       echo "extern int $i(void);"
+done)
+void ipsec_alg_static_init(void){ 
+       int __attribute__ ((unused)) err=0;
+$(for i in $*; do
+       test -z "$i" && continue
+       echo "  if ((err=$i()) < 0)"
+       echo "          printk(KERN_WARNING \"$i() returned %d\", err);"
+done)
+}
+EOF
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/anyaddr.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,148 @@
+/*
+ * special addresses
+ * Copyright (C) 2000  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id: anyaddr.c,v 1.10.10.1 2006-11-24 05:55:46 paul Exp $
+ */
+#include "openswan.h"
+
+/* these are mostly fallbacks for the no-IPv6-support-in-library case */
+#ifndef IN6ADDR_ANY_INIT
+#define        IN6ADDR_ANY_INIT        {{{ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 }}}
+#endif
+#ifndef IN6ADDR_LOOPBACK_INIT
+#define        IN6ADDR_LOOPBACK_INIT   {{{ 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1 }}}
+#endif
+
+static struct in6_addr v6any = IN6ADDR_ANY_INIT;
+static struct in6_addr v6loop = IN6ADDR_LOOPBACK_INIT;
+
+/*
+ - anyaddr - initialize to the any-address value
+ */
+err_t                          /* NULL for success, else string literal */
+anyaddr(af, dst)
+int af;                                /* address family */
+ip_address *dst;
+{
+       uint32_t v4any = htonl(INADDR_ANY);
+
+       switch (af) {
+       case AF_INET:
+               return initaddr((unsigned char *)&v4any, sizeof(v4any), af, dst);
+               break;
+       case AF_INET6:
+               return initaddr((unsigned char *)&v6any, sizeof(v6any), af, dst);
+               break;
+       default:
+               return "unknown address family in anyaddr/unspecaddr";
+               break;
+       }
+}
+
+/*
+ - unspecaddr - initialize to the unspecified-address value
+ */
+err_t                          /* NULL for success, else string literal */
+unspecaddr(af, dst)
+int af;                                /* address family */
+ip_address *dst;
+{
+       return anyaddr(af, dst);
+}
+
+/*
+ - loopbackaddr - initialize to the loopback-address value
+ */
+err_t                          /* NULL for success, else string literal */
+loopbackaddr(af, dst)
+int af;                                /* address family */
+ip_address *dst;
+{
+       uint32_t v4loop = htonl(INADDR_LOOPBACK);
+
+       switch (af) {
+       case AF_INET:
+               return initaddr((unsigned char *)&v4loop, sizeof(v4loop), af, dst);
+               break;
+       case AF_INET6:
+               return initaddr((unsigned char *)&v6loop, sizeof(v6loop), af, dst);
+               break;
+       default:
+               return "unknown address family in loopbackaddr";
+               break;
+       }
+}
+
+/*
+ - isanyaddr - test for the any-address value
+ */
+int
+isanyaddr(src)
+const ip_address *src;
+{
+       uint32_t v4any = htonl(INADDR_ANY);
+       int cmp;
+
+       switch (src->u.v4.sin_family) {
+       case AF_INET:
+               cmp = memcmp(&src->u.v4.sin_addr.s_addr, &v4any, sizeof(v4any));
+               break;
+       case AF_INET6:
+               cmp = memcmp(&src->u.v6.sin6_addr, &v6any, sizeof(v6any));
+               break;
+       case 0:
+               /* a zeroed structure is considered any address */
+               return 1;
+       default:
+               return 0;
+               break;
+       }
+
+       return (cmp == 0) ? 1 : 0;
+}
+
+/*
+ - isunspecaddr - test for the unspecified-address value
+ */
+int
+isunspecaddr(src)
+const ip_address *src;
+{
+       return isanyaddr(src);
+}
+
+/*
+ - isloopbackaddr - test for the loopback-address value
+ */
+int
+isloopbackaddr(src)
+const ip_address *src;
+{
+       uint32_t v4loop = htonl(INADDR_LOOPBACK);
+       int cmp;
+
+       switch (src->u.v4.sin_family) {
+       case AF_INET:
+               cmp = memcmp(&src->u.v4.sin_addr.s_addr, &v4loop, sizeof(v4loop));
+               break;
+       case AF_INET6:
+               cmp = memcmp(&src->u.v6.sin6_addr, &v6loop, sizeof(v6loop));
+               break;
+       default:
+               return 0;
+               break;
+       }
+
+       return (cmp == 0) ? 1 : 0;
+}
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/datatot.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,234 @@
+/*
+ * convert from binary data (e.g. key) to text form
+ * Copyright (C) 2000  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id: datatot.c,v 1.7 2005-04-14 20:48:43 mcr Exp $
+ */
+#include "openswan.h"
+
+static void convert(const char *src, size_t nreal, int format, char *out);
+
+/*
+ - datatot - convert data bytes to text
+ */
+size_t                         /* true length (with NUL) for success */
+datatot(src, srclen, format, dst, dstlen)
+const char *src;
+size_t srclen;
+int format;                    /* character indicating what format */
+char *dst;                     /* need not be valid if dstlen is 0 */
+size_t dstlen;
+{
+       size_t inblocksize;     /* process this many bytes at a time */
+       size_t outblocksize;    /* producing this many */
+       size_t breakevery;      /* add a _ every this many (0 means don't) */
+       size_t sincebreak;      /* output bytes since last _ */
+       char breakchar;         /* character used to break between groups */
+       char inblock[10];       /* enough for any format */
+       char outblock[10];      /* enough for any format */
+       char fake[1];           /* fake output area for dstlen == 0 */
+       size_t needed;          /* return value */
+       char *stop;             /* where the terminating NUL will go */
+       size_t ntodo;           /* remaining input */
+       size_t nreal;
+       char *out;
+       char *prefix;
+
+       breakevery = 0;
+       breakchar = '_';
+
+       switch (format) {
+       case 0:
+       case 'h':
+               format = 'x';
+               breakevery = 8;
+               /* FALLTHROUGH */
+       case 'x':
+               inblocksize = 1;
+               outblocksize = 2;
+               prefix = "0x";
+               break;
+       case ':':
+               format = 'x';
+               breakevery = 2;
+               breakchar = ':';
+               /* FALLTHROUGH */
+       case 16:
+               inblocksize = 1;
+               outblocksize = 2;
+               prefix = "";
+               format = 'x';
+               break;
+       case 's':
+               inblocksize = 3;
+               outblocksize = 4;
+               prefix = "0s";
+               break;
+       case 64:                /* beware, equals ' ' */
+               inblocksize = 3;
+               outblocksize = 4;
+               prefix = "";
+               format = 's';
+               break;
+       default:
+               return 0;
+               break;
+       }
+
+       user_assert(inblocksize < sizeof(inblock));
+       user_assert(outblocksize < sizeof(outblock));
+       user_assert(breakevery % outblocksize == 0);
+
+       if (srclen == 0)
+               return 0;
+       ntodo = srclen;
+
+       if (dstlen == 0) {      /* dispose of awkward special case */
+               dst = fake;
+               dstlen = 1;
+       }
+       stop = dst + dstlen - 1;
+
+       nreal = strlen(prefix);
+       needed = nreal;                 /* for starters */
+       if (dstlen <= nreal) {          /* prefix won't fit */
+               strncpy(dst, prefix, dstlen - 1);
+               dst += dstlen - 1;
+       } else {
+               strcpy(dst, prefix);
+               dst += nreal;
+       }
+
+       user_assert(dst <= stop);
+       sincebreak = 0;
+
+       while (ntodo > 0) {
+               if (ntodo < inblocksize) {      /* incomplete input */
+                       memset(inblock, 0, sizeof(inblock));
+                       memcpy(inblock, src, ntodo);
+                       src = inblock;
+                       nreal = ntodo;
+                       ntodo = inblocksize;
+               } else
+                       nreal = inblocksize;
+               out = (outblocksize > stop - dst) ? outblock : dst;
+
+               convert(src, nreal, format, out);
+               needed += outblocksize;
+               sincebreak += outblocksize;
+               if (dst < stop) {
+                       if (out != dst) {
+                               user_assert(outblocksize > stop - dst);
+                               memcpy(dst, out, stop - dst);
+                               dst = stop;
+                       } else
+                               dst += outblocksize;
+               }
+
+               src += inblocksize;
+               ntodo -= inblocksize;
+               if (breakevery != 0 && sincebreak >= breakevery && ntodo > 0) {
+                       if (dst < stop)
+                               *dst++ = breakchar;
+                       needed++;
+                       sincebreak = 0;
+               }
+       }
+
+       user_assert(dst <= stop);
+       *dst++ = '\0';
+       needed++;
+
+       return needed;
+}
+
+/*
+ - convert - convert one input block to one output block
+ */
+static void
+convert(src, nreal, format, out)
+const char *src;
+size_t nreal;                  /* how much of the input block is real */
+int format;
+char *out;
+{
+       static char hex[] = "0123456789abcdef";
+       static char base64[] =  "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+                               "abcdefghijklmnopqrstuvwxyz"
+                               "0123456789+/";
+       unsigned char c;
+       unsigned char c1, c2, c3;
+
+       user_assert(nreal > 0);
+       switch (format) {
+       case 'x':
+               user_assert(nreal == 1);
+               c = (unsigned char)*src;
+               *out++ = hex[c >> 4];
+               *out++ = hex[c & 0xf];
+               break;
+       case 's':
+               c1 = (unsigned char)*src++;
+               c2 = (unsigned char)*src++;
+               c3 = (unsigned char)*src++;
+               *out++ = base64[c1 >> 2];       /* top 6 bits of c1 */
+               c = (c1 & 0x3) << 4;            /* bottom 2 of c1... */
+               c |= c2 >> 4;                   /* ...top 4 of c2 */
+               *out++ = base64[c];
+               if (nreal == 1)
+                       *out++ = '=';
+               else {
+                       c = (c2 & 0xf) << 2;    /* bottom 4 of c2... */
+                       c |= c3 >> 6;           /* ...top 2 of c3 */
+                       *out++ = base64[c];
+               }
+               if (nreal <= 2)
+                       *out++ = '=';
+               else
+                       *out++ = base64[c3 & 0x3f];     /* bottom 6 of c3 */
+               break;
+       default:
+               user_assert(nreal == 0);        /* unknown format */
+               break;
+       }
+}
+
+/*
+ - datatoa - convert data to ASCII
+ * backward-compatibility synonym for datatot
+ */
+size_t                         /* true length (with NUL) for success */
+datatoa(src, srclen, format, dst, dstlen)
+const char *src;
+size_t srclen;
+int format;                    /* character indicating what format */
+char *dst;                     /* need not be valid if dstlen is 0 */
+size_t dstlen;
+{
+       return datatot(src, srclen, format, dst, dstlen);
+}
+
+/*
+ - bytestoa - convert data bytes to ASCII
+ * backward-compatibility synonym for datatot
+ */
+size_t                         /* true length (with NUL) for success */
+bytestoa(src, srclen, format, dst, dstlen)
+const char *src;
+size_t srclen;
+int format;                    /* character indicating what format */
+char *dst;                     /* need not be valid if dstlen is 0 */
+size_t dstlen;
+{
+       return datatot(src, srclen, format, dst, dstlen);
+}
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/defconfig     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,148 @@
+
+#
+# RCSID $Id: defconfig,v 1.28.2.1 2006-10-11 18:14:33 paul Exp $
+#
+
+#
+# FreeS/WAN IPSec implementation, KLIPS kernel config defaults
+#
+
+#
+# First, lets override stuff already set or not in the kernel config.
+#
+# We can't even think about leaving this off...
+CONFIG_INET=y
+
+#
+# This must be on for subnet protection.
+CONFIG_IP_FORWARD=y
+
+# Shut off IPSEC masquerading if it has been enabled, since it will 
+# break the compile.  IPPROTO_ESP and IPPROTO_AH were included in 
+# net/ipv4/ip_masq.c when they should have gone into include/linux/in.h.
+CONFIG_IP_MASQUERADE_IPSEC=n
+
+#
+# Next, lets set the recommended FreeS/WAN configuration.
+#
+
+# To config as static (preferred), 'y'.  To config as module, 'm'.
+CONFIG_KLIPS=m
+
+# To do tunnel mode IPSec, this must be enabled.
+CONFIG_KLIPS_IPIP=y
+
+# To enable authentication, say 'y'.   (Highly recommended)
+CONFIG_KLIPS_AH=y
+
+# Authentication algorithm(s):
+CONFIG_KLIPS_AUTH_HMAC_MD5=y
+CONFIG_KLIPS_AUTH_HMAC_SHA1=y
+
+# To enable encryption, say 'y'.   (Highly recommended)
+CONFIG_KLIPS_ESP=y
+
+# modular algo extensions (and new ALGOs)
+CONFIG_KLIPS_ALG=y
+
+# Encryption algorithm(s):
+CONFIG_KLIPS_ENC_3DES=y
+CONFIG_KLIPS_ENC_AES=y
+# CONFIG_KLIPS_ENC_NULL=y
+
+# Use CryptoAPI for ALG? - by default, no.
+CONFIG_KLIPS_ENC_CRYPTOAPI=n
+
+# IP Compression: new, probably still has minor bugs.
+CONFIG_KLIPS_IPCOMP=y
+
+# To enable userspace-switchable KLIPS debugging, say 'y'.
+CONFIG_KLIPS_DEBUG=y
+
+# NAT Traversal
+CONFIG_IPSEC_NAT_TRAVERSAL=y
+
+#
+#
+# $Log: defconfig,v $
+# Revision 1.28.2.1  2006-10-11 18:14:33  paul
+# Add JuanJo Ciarlante's ESP_NULL patches for KLIPS, but leave it disabled
+# per default.
+#
+# Revision 1.28  2005/05/11 03:15:42  mcr
+#      adjusted makefiles to sanely build modules properly.
+#
+# Revision 1.27  2005/03/20 03:00:05  mcr
+#      default configuration should enable NAT_TRAVERSAL.
+#
+# Revision 1.26  2004/07/10 19:11:18  mcr
+#      CONFIG_IPSEC -> CONFIG_KLIPS.
+#
+# Revision 1.25  2004/07/05 01:03:53  mcr
+#      fix for adding cryptoapi code.
+#      keep it off for now, since UMLs do not have it yet.
+#
+# Revision 1.24  2004/04/06 02:49:25  mcr
+#      pullup of algo code from alg-branch.
+#
+# Revision 1.23.2.2  2004/04/05 04:30:46  mcr
+#      patches for alg-branch to compile/work with 2.x openswan
+#
+# Revision 1.23.2.1  2003/12/22 15:25:52  jjo
+# . Merged algo-0.8.1-rc11-test1 into alg-branch
+#
+# Revision 1.23  2003/12/10 01:14:27  mcr
+#      NAT-traversal patches to KLIPS.
+#
+# Revision 1.22  2003/02/24 19:37:27  mcr
+#      changed default compilation mode to static.
+#
+# Revision 1.21  2002/04/24 07:36:27  mcr
+# Moved from ./klips/net/ipsec/defconfig,v
+#
+# Revision 1.20  2002/04/02 04:07:40  mcr
+#      default build is now 'm'odule for KLIPS
+#
+# Revision 1.19  2002/03/08 18:57:17  rgb
+# Added a blank line at the beginning of the file to make it easier for
+# other projects to patch ./arch/i386/defconfig, for example
+# LIDS+grSecurity requested by Jason Pattie.
+#
+# Revision 1.18  2000/11/30 17:26:56  rgb
+# Cleaned out unused options and enabled ipcomp by default.
+#
+# Revision 1.17  2000/09/15 11:37:01  rgb
+# Merge in heavily modified Svenning Soerensen's <svenning@post5.tele.dk>
+# IPCOMP zlib deflate code.
+#
+# Revision 1.16  2000/09/08 19:12:55  rgb
+# Change references from DEBUG_IPSEC to CONFIG_IPSEC_DEBUG.
+#
+# Revision 1.15  2000/05/24 19:37:13  rgb
+# *** empty log message ***
+#
+# Revision 1.14  2000/05/11 21:14:57  henry
+# just commenting the FOOBAR=y lines out is not enough
+#
+# Revision 1.13  2000/05/10 20:17:58  rgb
+# Comment out netlink defaults, which are no longer needed.
+#
+# Revision 1.12  2000/05/10 19:13:38  rgb
+# Added configure option to shut off no eroute passthrough.
+#
+# Revision 1.11  2000/03/16 07:09:46  rgb
+# Hardcode PF_KEYv2 support.
+# Disable IPSEC_ICMP by default.
+# Remove DES config option from defaults file.
+#
+# Revision 1.10  2000/01/11 03:09:42  rgb
+# Added a default of 'y' to PF_KEYv2 keying I/F.
+#
+# Revision 1.9  1999/05/08 21:23:12  rgb
+# Added support for 2.2.x kernels.
+#
+# Revision 1.8  1999/04/06 04:54:25  rgb
+# Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+# patch shell fixes.
+#
+#
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/deflate.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,1351 @@
+/* deflate.c -- compress data using the deflation algorithm
+ * Copyright (C) 1995-2002 Jean-loup Gailly.
+ * For conditions of distribution and use, see copyright notice in zlib.h 
+ */
+
+/*
+ *  ALGORITHM
+ *
+ *      The "deflation" process depends on being able to identify portions
+ *      of the input text which are identical to earlier input (within a
+ *      sliding window trailing behind the input currently being processed).
+ *
+ *      The most straightforward technique turns out to be the fastest for
+ *      most input files: try all possible matches and select the longest.
+ *      The key feature of this algorithm is that insertions into the string
+ *      dictionary are very simple and thus fast, and deletions are avoided
+ *      completely. Insertions are performed at each input character, whereas
+ *      string matches are performed only when the previous match ends. So it
+ *      is preferable to spend more time in matches to allow very fast string
+ *      insertions and avoid deletions. The matching algorithm for small
+ *      strings is inspired from that of Rabin & Karp. A brute force approach
+ *      is used to find longer strings when a small match has been found.
+ *      A similar algorithm is used in comic (by Jan-Mark Wams) and freeze
+ *      (by Leonid Broukhis).
+ *         A previous version of this file used a more sophisticated algorithm
+ *      (by Fiala and Greene) which is guaranteed to run in linear amortized
+ *      time, but has a larger average cost, uses more memory and is patented.
+ *      However the F&G algorithm may be faster for some highly redundant
+ *      files if the parameter max_chain_length (described below) is too large.
+ *
+ *  ACKNOWLEDGEMENTS
+ *
+ *      The idea of lazy evaluation of matches is due to Jan-Mark Wams, and
+ *      I found it in 'freeze' written by Leonid Broukhis.
+ *      Thanks to many people for bug reports and testing.
+ *
+ *  REFERENCES
+ *
+ *      Deutsch, L.P.,"DEFLATE Compressed Data Format Specification".
+ *      Available in ftp://ds.internic.net/rfc/rfc1951.txt
+ *
+ *      A description of the Rabin and Karp algorithm is given in the book
+ *         "Algorithms" by R. Sedgewick, Addison-Wesley, p252.
+ *
+ *      Fiala,E.R., and Greene,D.H.
+ *         Data Compression with Finite Windows, Comm.ACM, 32,4 (1989) 490-595
+ *
+ */
+
+/* @(#) $Id: deflate.c,v 1.4 2004-07-10 07:48:37 mcr Exp $ */
+
+#include "deflate.h"
+
+local const char deflate_copyright[] =
+   " deflate 1.1.4 Copyright 1995-2002 Jean-loup Gailly ";
+/*
+  If you use the zlib library in a product, an acknowledgment is welcome
+  in the documentation of your product. If for some reason you cannot
+  include such an acknowledgment, I would appreciate that you keep this
+  copyright string in the executable of your product.
+ */
+
+/* ===========================================================================
+ *  Function prototypes.
+ */
+typedef enum {
+    need_more,      /* block not completed, need more input or more output */
+    block_done,     /* block flush performed */
+    finish_started, /* finish started, need only more output at next deflate */
+    finish_done     /* finish done, accept no more input or output */
+} block_state;
+
+typedef block_state (*compress_func) OF((deflate_state *s, int flush));
+/* Compression function. Returns the block state after the call. */
+
+local void fill_window    OF((deflate_state *s));
+local block_state deflate_stored OF((deflate_state *s, int flush));
+local block_state deflate_fast   OF((deflate_state *s, int flush));
+local block_state deflate_slow   OF((deflate_state *s, int flush));
+local void lm_init        OF((deflate_state *s));
+local void putShortMSB    OF((deflate_state *s, uInt b));
+local void flush_pending  OF((z_streamp strm));
+local int read_buf        OF((z_streamp strm, Bytef *buf, unsigned size));
+#ifdef ASMV
+      void match_init OF((void)); /* asm code initialization */
+      uInt longest_match  OF((deflate_state *s, IPos cur_match));
+#else
+local uInt longest_match  OF((deflate_state *s, IPos cur_match));
+#endif
+
+#ifdef DEBUG
+local  void check_match OF((deflate_state *s, IPos start, IPos match,
+                            int length));
+#endif
+
+/* ===========================================================================
+ * Local data
+ */
+
+#define NIL 0
+/* Tail of hash chains */
+
+#ifndef TOO_FAR
+#  define TOO_FAR 4096
+#endif
+/* Matches of length 3 are discarded if their distance exceeds TOO_FAR */
+
+#define MIN_LOOKAHEAD (MAX_MATCH+MIN_MATCH+1)
+/* Minimum amount of lookahead, except at the end of the input file.
+ * See deflate.c for comments about the MIN_MATCH+1.
+ */
+
+/* Values for max_lazy_match, good_match and max_chain_length, depending on
+ * the desired pack level (0..9). The values given below have been tuned to
+ * exclude worst case performance for pathological files. Better values may be
+ * found for specific files.
+ */
+typedef struct config_s {
+   ush good_length; /* reduce lazy search above this match length */
+   ush max_lazy;    /* do not perform lazy search above this match length */
+   ush nice_length; /* quit search above this match length */
+   ush max_chain;
+   compress_func func;
+} config;
+
+local const config configuration_table[10] = {
+/*      good lazy nice chain */
+/* 0 */ {0,    0,  0,    0, deflate_stored},  /* store only */
+/* 1 */ {4,    4,  8,    4, deflate_fast}, /* maximum speed, no lazy matches */
+/* 2 */ {4,    5, 16,    8, deflate_fast},
+/* 3 */ {4,    6, 32,   32, deflate_fast},
+
+/* 4 */ {4,    4, 16,   16, deflate_slow},  /* lazy matches */
+/* 5 */ {8,   16, 32,   32, deflate_slow},
+/* 6 */ {8,   16, 128, 128, deflate_slow},
+/* 7 */ {8,   32, 128, 256, deflate_slow},
+/* 8 */ {32, 128, 258, 1024, deflate_slow},
+/* 9 */ {32, 258, 258, 4096, deflate_slow}}; /* maximum compression */
+
+/* Note: the deflate() code requires max_lazy >= MIN_MATCH and max_chain >= 4
+ * For deflate_fast() (levels <= 3) good is ignored and lazy has a different
+ * meaning.
+ */
+
+#define EQUAL 0
+/* result of memcmp for equal strings */
+
+struct static_tree_desc_s {int dummy;}; /* for buggy compilers */
+
+/* ===========================================================================
+ * Update a hash value with the given input byte
+ * IN  assertion: all calls to to UPDATE_HASH are made with consecutive
+ *    input characters, so that a running hash key can be computed from the
+ *    previous key instead of complete recalculation each time.
+ */
+#define UPDATE_HASH(s,h,c) (h = (((h)<<s->hash_shift) ^ (c)) & s->hash_mask)
+
+
+/* ===========================================================================
+ * Insert string str in the dictionary and set match_head to the previous head
+ * of the hash chain (the most recent string with same hash key). Return
+ * the previous length of the hash chain.
+ * If this file is compiled with -DFASTEST, the compression level is forced
+ * to 1, and no hash chains are maintained.
+ * IN  assertion: all calls to to INSERT_STRING are made with consecutive
+ *    input characters and the first MIN_MATCH bytes of str are valid
+ *    (except for the last MIN_MATCH-1 bytes of the input file).
+ */
+#ifdef FASTEST
+#define INSERT_STRING(s, str, match_head) \
+   (UPDATE_HASH(s, s->ins_h, s->window[(str) + (MIN_MATCH-1)]), \
+    match_head = s->head[s->ins_h], \
+    s->head[s->ins_h] = (Pos)(str))
+#else
+#define INSERT_STRING(s, str, match_head) \
+   (UPDATE_HASH(s, s->ins_h, s->window[(str) + (MIN_MATCH-1)]), \
+    s->prev[(str) & s->w_mask] = match_head = s->head[s->ins_h], \
+    s->head[s->ins_h] = (Pos)(str))
+#endif
+
+/* ===========================================================================
+ * Initialize the hash table (avoiding 64K overflow for 16 bit systems).
+ * prev[] will be initialized on the fly.
+ */
+#define CLEAR_HASH(s) \
+    s->head[s->hash_size-1] = NIL; \
+    zmemzero((Bytef *)s->head, (unsigned)(s->hash_size-1)*sizeof(*s->head));
+
+/* ========================================================================= */
+int ZEXPORT deflateInit_(strm, level, version, stream_size)
+    z_streamp strm;
+    int level;
+    const char *version;
+    int stream_size;
+{
+    return deflateInit2_(strm, level, Z_DEFLATED, MAX_WBITS, DEF_MEM_LEVEL,
+                        Z_DEFAULT_STRATEGY, version, stream_size);
+    /* To do: ignore strm->next_in if we use it as window */
+}
+
+/* ========================================================================= */
+int ZEXPORT deflateInit2_(strm, level, method, windowBits, memLevel, strategy,
+                 version, stream_size)
+    z_streamp strm;
+    int  level;
+    int  method;
+    int  windowBits;
+    int  memLevel;
+    int  strategy;
+    const char *version;
+    int stream_size;
+{
+    deflate_state *s;
+    int noheader = 0;
+    static const char* my_version = ZLIB_VERSION;
+
+    ushf *overlay;
+    /* We overlay pending_buf and d_buf+l_buf. This works since the average
+     * output size for (length,distance) codes is <= 24 bits.
+     */
+
+    if (version == Z_NULL || version[0] != my_version[0] ||
+        stream_size != sizeof(z_stream)) {
+       return Z_VERSION_ERROR;
+    }
+    if (strm == Z_NULL) return Z_STREAM_ERROR;
+
+    strm->msg = Z_NULL;
+    if (strm->zalloc == Z_NULL) {
+      return Z_STREAM_ERROR;
+/*     strm->zalloc = zcalloc;
+       strm->opaque = (voidpf)0;*/
+    }
+    if (strm->zfree == Z_NULL) return Z_STREAM_ERROR; /* strm->zfree = zcfree; */
+
+    if (level == Z_DEFAULT_COMPRESSION) level = 6;
+#ifdef FASTEST
+    level = 1;
+#endif
+
+    if (windowBits < 0) { /* undocumented feature: suppress zlib header */
+        noheader = 1;
+        windowBits = -windowBits;
+    }
+    if (memLevel < 1 || memLevel > MAX_MEM_LEVEL || method != Z_DEFLATED ||
+        windowBits < 9 || windowBits > 15 || level < 0 || level > 9 ||
+       strategy < 0 || strategy > Z_HUFFMAN_ONLY) {
+        return Z_STREAM_ERROR;
+    }
+    s = (deflate_state *) ZALLOC(strm, 1, sizeof(deflate_state));
+    if (s == Z_NULL) return Z_MEM_ERROR;
+    strm->state = (struct internal_state FAR *)s;
+    s->strm = strm;
+
+    s->noheader = noheader;
+    s->w_bits = windowBits;
+    s->w_size = 1 << s->w_bits;
+    s->w_mask = s->w_size - 1;
+
+    s->hash_bits = memLevel + 7;
+    s->hash_size = 1 << s->hash_bits;
+    s->hash_mask = s->hash_size - 1;
+    s->hash_shift =  ((s->hash_bits+MIN_MATCH-1)/MIN_MATCH);
+
+    s->window = (Bytef *) ZALLOC(strm, s->w_size, 2*sizeof(Byte));
+    s->prev   = (Posf *)  ZALLOC(strm, s->w_size, sizeof(Pos));
+    s->head   = (Posf *)  ZALLOC(strm, s->hash_size, sizeof(Pos));
+
+    s->lit_bufsize = 1 << (memLevel + 6); /* 16K elements by default */
+
+    overlay = (ushf *) ZALLOC(strm, s->lit_bufsize, sizeof(ush)+2);
+    s->pending_buf = (uchf *) overlay;
+    s->pending_buf_size = (ulg)s->lit_bufsize * (sizeof(ush)+2L);
+
+    if (s->window == Z_NULL || s->prev == Z_NULL || s->head == Z_NULL ||
+        s->pending_buf == Z_NULL) {
+        strm->msg = ERR_MSG(Z_MEM_ERROR);
+        deflateEnd (strm);
+        return Z_MEM_ERROR;
+    }
+    s->d_buf = overlay + s->lit_bufsize/sizeof(ush);
+    s->l_buf = s->pending_buf + (1+sizeof(ush))*s->lit_bufsize;
+
+    s->level = level;
+    s->strategy = strategy;
+    s->method = (Byte)method;
+
+    return deflateReset(strm);
+}
+
+/* ========================================================================= */
+int ZEXPORT deflateSetDictionary (strm, dictionary, dictLength)
+    z_streamp strm;
+    const Bytef *dictionary;
+    uInt  dictLength;
+{
+    deflate_state *s;
+    uInt length = dictLength;
+    uInt n;
+    IPos hash_head = 0;
+
+    if (strm == Z_NULL || strm->state == Z_NULL || dictionary == Z_NULL ||
+        strm->state->status != INIT_STATE) return Z_STREAM_ERROR;
+
+    s = strm->state;
+    strm->adler = adler32(strm->adler, dictionary, dictLength);
+
+    if (length < MIN_MATCH) return Z_OK;
+    if (length > MAX_DIST(s)) {
+       length = MAX_DIST(s);
+#ifndef USE_DICT_HEAD
+       dictionary += dictLength - length; /* use the tail of the dictionary */
+#endif
+    }
+    zmemcpy(s->window, dictionary, length);
+    s->strstart = length;
+    s->block_start = (long)length;
+
+    /* Insert all strings in the hash table (except for the last two bytes).
+     * s->lookahead stays null, so s->ins_h will be recomputed at the next
+     * call of fill_window.
+     */
+    s->ins_h = s->window[0];
+    UPDATE_HASH(s, s->ins_h, s->window[1]);
+    for (n = 0; n <= length - MIN_MATCH; n++) {
+       INSERT_STRING(s, n, hash_head);
+    }
+    if (hash_head) hash_head = 0;  /* to make compiler happy */
+    return Z_OK;
+}
+
+/* ========================================================================= */
+int ZEXPORT deflateReset (strm)
+    z_streamp strm;
+{
+    deflate_state *s;
+    
+    if (strm == Z_NULL || strm->state == Z_NULL ||
+        strm->zalloc == Z_NULL || strm->zfree == Z_NULL) return Z_STREAM_ERROR;
+
+    strm->total_in = strm->total_out = 0;
+    strm->msg = Z_NULL; /* use zfree if we ever allocate msg dynamically */
+    strm->data_type = Z_UNKNOWN;
+
+    s = (deflate_state *)strm->state;
+    s->pending = 0;
+    s->pending_out = s->pending_buf;
+
+    if (s->noheader < 0) {
+        s->noheader = 0; /* was set to -1 by deflate(..., Z_FINISH); */
+    }
+    s->status = s->noheader ? BUSY_STATE : INIT_STATE;
+    strm->adler = 1;
+    s->last_flush = Z_NO_FLUSH;
+
+    _tr_init(s);
+    lm_init(s);
+
+    return Z_OK;
+}
+
+/* ========================================================================= */
+int ZEXPORT deflateParams(strm, level, strategy)
+    z_streamp strm;
+    int level;
+    int strategy;
+{
+    deflate_state *s;
+    compress_func func;
+    int err = Z_OK;
+
+    if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
+    s = strm->state;
+
+    if (level == Z_DEFAULT_COMPRESSION) {
+       level = 6;
+    }
+    if (level < 0 || level > 9 || strategy < 0 || strategy > Z_HUFFMAN_ONLY) {
+       return Z_STREAM_ERROR;
+    }
+    func = configuration_table[s->level].func;
+
+    if (func != configuration_table[level].func && strm->total_in != 0) {
+       /* Flush the last buffer: */
+       err = deflate(strm, Z_PARTIAL_FLUSH);
+    }
+    if (s->level != level) {
+       s->level = level;
+       s->max_lazy_match   = configuration_table[level].max_lazy;
+       s->good_match       = configuration_table[level].good_length;
+       s->nice_match       = configuration_table[level].nice_length;
+       s->max_chain_length = configuration_table[level].max_chain;
+    }
+    s->strategy = strategy;
+    return err;
+}
+
+/* =========================================================================
+ * Put a short in the pending buffer. The 16-bit value is put in MSB order.
+ * IN assertion: the stream state is correct and there is enough room in
+ * pending_buf.
+ */
+local void putShortMSB (s, b)
+    deflate_state *s;
+    uInt b;
+{
+    put_byte(s, (Byte)(b >> 8));
+    put_byte(s, (Byte)(b & 0xff));
+}   
+
+/* =========================================================================
+ * Flush as much pending output as possible. All deflate() output goes
+ * through this function so some applications may wish to modify it
+ * to avoid allocating a large strm->next_out buffer and copying into it.
+ * (See also read_buf()).
+ */
+local void flush_pending(strm)
+    z_streamp strm;
+{
+    unsigned len = strm->state->pending;
+
+    if (len > strm->avail_out) len = strm->avail_out;
+    if (len == 0) return;
+
+    zmemcpy(strm->next_out, strm->state->pending_out, len);
+    strm->next_out  += len;
+    strm->state->pending_out  += len;
+    strm->total_out += len;
+    strm->avail_out  -= len;
+    strm->state->pending -= len;
+    if (strm->state->pending == 0) {
+        strm->state->pending_out = strm->state->pending_buf;
+    }
+}
+
+/* ========================================================================= */
+int ZEXPORT deflate (strm, flush)
+    z_streamp strm;
+    int flush;
+{
+    int old_flush; /* value of flush param for previous deflate call */
+    deflate_state *s;
+
+    if (strm == Z_NULL || strm->state == Z_NULL ||
+       flush > Z_FINISH || flush < 0) {
+        return Z_STREAM_ERROR;
+    }
+    s = strm->state;
+
+    if (strm->next_out == Z_NULL ||
+        (strm->next_in == Z_NULL && strm->avail_in != 0) ||
+       (s->status == FINISH_STATE && flush != Z_FINISH)) {
+        ERR_RETURN(strm, Z_STREAM_ERROR);
+    }
+    if (strm->avail_out == 0) ERR_RETURN(strm, Z_BUF_ERROR);
+
+    s->strm = strm; /* just in case */
+    old_flush = s->last_flush;
+    s->last_flush = flush;
+
+    /* Write the zlib header */
+    if (s->status == INIT_STATE) {
+
+        uInt header = (Z_DEFLATED + ((s->w_bits-8)<<4)) << 8;
+        uInt level_flags = (s->level-1) >> 1;
+
+        if (level_flags > 3) level_flags = 3;
+        header |= (level_flags << 6);
+       if (s->strstart != 0) header |= PRESET_DICT;
+        header += 31 - (header % 31);
+
+        s->status = BUSY_STATE;
+        putShortMSB(s, header);
+
+       /* Save the adler32 of the preset dictionary: */
+       if (s->strstart != 0) {
+           putShortMSB(s, (uInt)(strm->adler >> 16));
+           putShortMSB(s, (uInt)(strm->adler & 0xffff));
+       }
+       strm->adler = 1L;
+    }
+
+    /* Flush as much pending output as possible */
+    if (s->pending != 0) {
+        flush_pending(strm);
+        if (strm->avail_out == 0) {
+           /* Since avail_out is 0, deflate will be called again with
+            * more output space, but possibly with both pending and
+            * avail_in equal to zero. There won't be anything to do,
+            * but this is not an error situation so make sure we
+            * return OK instead of BUF_ERROR at next call of deflate:
+             */
+           s->last_flush = -1;
+           return Z_OK;
+       }
+
+    /* Make sure there is something to do and avoid duplicate consecutive
+     * flushes. For repeated and useless calls with Z_FINISH, we keep
+     * returning Z_STREAM_END instead of Z_BUFF_ERROR.
+     */
+    } else if (strm->avail_in == 0 && flush <= old_flush &&
+              flush != Z_FINISH) {
+        ERR_RETURN(strm, Z_BUF_ERROR);
+    }
+
+    /* User must not provide more input after the first FINISH: */
+    if (s->status == FINISH_STATE && strm->avail_in != 0) {
+        ERR_RETURN(strm, Z_BUF_ERROR);
+    }
+
+    /* Start a new block or continue the current one.
+     */
+    if (strm->avail_in != 0 || s->lookahead != 0 ||
+        (flush != Z_NO_FLUSH && s->status != FINISH_STATE)) {
+        block_state bstate;
+
+       bstate = (*(configuration_table[s->level].func))(s, flush);
+
+        if (bstate == finish_started || bstate == finish_done) {
+            s->status = FINISH_STATE;
+        }
+        if (bstate == need_more || bstate == finish_started) {
+           if (strm->avail_out == 0) {
+               s->last_flush = -1; /* avoid BUF_ERROR next call, see above */
+           }
+           return Z_OK;
+           /* If flush != Z_NO_FLUSH && avail_out == 0, the next call
+            * of deflate should use the same flush parameter to make sure
+            * that the flush is complete. So we don't have to output an
+            * empty block here, this will be done at next call. This also
+            * ensures that for a very small output buffer, we emit at most
+            * one empty block.
+            */
+       }
+        if (bstate == block_done) {
+            if (flush == Z_PARTIAL_FLUSH) {
+                _tr_align(s);
+            } else { /* FULL_FLUSH or SYNC_FLUSH */
+                _tr_stored_block(s, (char*)0, 0L, 0);
+                /* For a full flush, this empty block will be recognized
+                 * as a special marker by inflate_sync().
+                 */
+                if (flush == Z_FULL_FLUSH) {
+                    CLEAR_HASH(s);             /* forget history */
+                }
+            }
+            flush_pending(strm);
+           if (strm->avail_out == 0) {
+             s->last_flush = -1; /* avoid BUF_ERROR at next call, see above */
+             return Z_OK;
+           }
+        }
+    }
+    Assert(strm->avail_out > 0, "bug2");
+
+    if (flush != Z_FINISH) return Z_OK;
+    if (s->noheader) return Z_STREAM_END;
+
+    /* Write the zlib trailer (adler32) */
+    putShortMSB(s, (uInt)(strm->adler >> 16));
+    putShortMSB(s, (uInt)(strm->adler & 0xffff));
+    flush_pending(strm);
+    /* If avail_out is zero, the application will call deflate again
+     * to flush the rest.
+     */
+    s->noheader = -1; /* write the trailer only once! */
+    return s->pending != 0 ? Z_OK : Z_STREAM_END;
+}
+
+/* ========================================================================= */
+int ZEXPORT deflateEnd (strm)
+    z_streamp strm;
+{
+    int status;
+
+    if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
+
+    status = strm->state->status;
+    if (status != INIT_STATE && status != BUSY_STATE &&
+       status != FINISH_STATE) {
+      return Z_STREAM_ERROR;
+    }
+
+    /* Deallocate in reverse order of allocations: */
+    TRY_FREE(strm, strm->state->pending_buf);
+    TRY_FREE(strm, strm->state->head);
+    TRY_FREE(strm, strm->state->prev);
+    TRY_FREE(strm, strm->state->window);
+
+    ZFREE(strm, strm->state);
+    strm->state = Z_NULL;
+
+    return status == BUSY_STATE ? Z_DATA_ERROR : Z_OK;
+}
+
+/* =========================================================================
+ * Copy the source state to the destination state.
+ * To simplify the source, this is not supported for 16-bit MSDOS (which
+ * doesn't have enough memory anyway to duplicate compression states).
+ */
+int ZEXPORT deflateCopy (dest, source)
+    z_streamp dest;
+    z_streamp source;
+{
+#ifdef MAXSEG_64K
+    return Z_STREAM_ERROR;
+#else
+    deflate_state *ds;
+    deflate_state *ss;
+    ushf *overlay;
+
+
+    if (source == Z_NULL || dest == Z_NULL || source->state == Z_NULL) {
+        return Z_STREAM_ERROR;
+    }
+
+    ss = source->state;
+
+    *dest = *source;
+
+    ds = (deflate_state *) ZALLOC(dest, 1, sizeof(deflate_state));
+    if (ds == Z_NULL) return Z_MEM_ERROR;
+    dest->state = (struct internal_state FAR *) ds;
+    *ds = *ss;
+    ds->strm = dest;
+
+    ds->window = (Bytef *) ZALLOC(dest, ds->w_size, 2*sizeof(Byte));
+    ds->prev   = (Posf *)  ZALLOC(dest, ds->w_size, sizeof(Pos));
+    ds->head   = (Posf *)  ZALLOC(dest, ds->hash_size, sizeof(Pos));
+    overlay = (ushf *) ZALLOC(dest, ds->lit_bufsize, sizeof(ush)+2);
+    ds->pending_buf = (uchf *) overlay;
+
+    if (ds->window == Z_NULL || ds->prev == Z_NULL || ds->head == Z_NULL ||
+        ds->pending_buf == Z_NULL) {
+        deflateEnd (dest);
+        return Z_MEM_ERROR;
+    }
+    /* following zmemcpy do not work for 16-bit MSDOS */
+    zmemcpy(ds->window, ss->window, ds->w_size * 2 * sizeof(Byte));
+    zmemcpy(ds->prev, ss->prev, ds->w_size * sizeof(Pos));
+    zmemcpy(ds->head, ss->head, ds->hash_size * sizeof(Pos));
+    zmemcpy(ds->pending_buf, ss->pending_buf, (uInt)ds->pending_buf_size);
+
+    ds->pending_out = ds->pending_buf + (ss->pending_out - ss->pending_buf);
+    ds->d_buf = overlay + ds->lit_bufsize/sizeof(ush);
+    ds->l_buf = ds->pending_buf + (1+sizeof(ush))*ds->lit_bufsize;
+
+    ds->l_desc.dyn_tree = ds->dyn_ltree;
+    ds->d_desc.dyn_tree = ds->dyn_dtree;
+    ds->bl_desc.dyn_tree = ds->bl_tree;
+
+    return Z_OK;
+#endif
+}
+
+/* ===========================================================================
+ * Read a new buffer from the current input stream, update the adler32
+ * and total number of bytes read.  All deflate() input goes through
+ * this function so some applications may wish to modify it to avoid
+ * allocating a large strm->next_in buffer and copying from it.
+ * (See also flush_pending()).
+ */
+local int read_buf(strm, buf, size)
+    z_streamp strm;
+    Bytef *buf;
+    unsigned size;
+{
+    unsigned len = strm->avail_in;
+
+    if (len > size) len = size;
+    if (len == 0) return 0;
+
+    strm->avail_in  -= len;
+
+    if (!strm->state->noheader) {
+        strm->adler = adler32(strm->adler, strm->next_in, len);
+    }
+    zmemcpy(buf, strm->next_in, len);
+    strm->next_in  += len;
+    strm->total_in += len;
+
+    return (int)len;
+}
+
+/* ===========================================================================
+ * Initialize the "longest match" routines for a new zlib stream
+ */
+local void lm_init (s)
+    deflate_state *s;
+{
+    s->window_size = (ulg)2L*s->w_size;
+
+    CLEAR_HASH(s);
+
+    /* Set the default configuration parameters:
+     */
+    s->max_lazy_match   = configuration_table[s->level].max_lazy;
+    s->good_match       = configuration_table[s->level].good_length;
+    s->nice_match       = configuration_table[s->level].nice_length;
+    s->max_chain_length = configuration_table[s->level].max_chain;
+
+    s->strstart = 0;
+    s->block_start = 0L;
+    s->lookahead = 0;
+    s->match_length = s->prev_length = MIN_MATCH-1;
+    s->match_available = 0;
+    s->ins_h = 0;
+#ifdef ASMV
+    match_init(); /* initialize the asm code */
+#endif
+}
+
+/* ===========================================================================
+ * Set match_start to the longest match starting at the given string and
+ * return its length. Matches shorter or equal to prev_length are discarded,
+ * in which case the result is equal to prev_length and match_start is
+ * garbage.
+ * IN assertions: cur_match is the head of the hash chain for the current
+ *   string (strstart) and its distance is <= MAX_DIST, and prev_length >= 1
+ * OUT assertion: the match length is not greater than s->lookahead.
+ */
+#ifndef ASMV
+/* For 80x86 and 680x0, an optimized version will be provided in match.asm or
+ * match.S. The code will be functionally equivalent.
+ */
+#ifndef FASTEST
+local uInt longest_match(s, cur_match)
+    deflate_state *s;
+    IPos cur_match;                             /* current match */
+{
+    unsigned chain_length = s->max_chain_length;/* max hash chain length */
+    register Bytef *scan = s->window + s->strstart; /* current string */
+    register Bytef *match;                       /* matched string */
+    register int len;                           /* length of current match */
+    int best_len = s->prev_length;              /* best match length so far */
+    int nice_match = s->nice_match;             /* stop if match long enough */
+    IPos limit = s->strstart > (IPos)MAX_DIST(s) ?
+        s->strstart - (IPos)MAX_DIST(s) : NIL;
+    /* Stop when cur_match becomes <= limit. To simplify the code,
+     * we prevent matches with the string of window index 0.
+     */
+    Posf *prev = s->prev;
+    uInt wmask = s->w_mask;
+
+#ifdef UNALIGNED_OK
+    /* Compare two bytes at a time. Note: this is not always beneficial.
+     * Try with and without -DUNALIGNED_OK to check.
+     */
+    register Bytef *strend = s->window + s->strstart + MAX_MATCH - 1;
+    register ush scan_start = *(ushf*)scan;
+    register ush scan_end   = *(ushf*)(scan+best_len-1);
+#else
+    register Bytef *strend = s->window + s->strstart + MAX_MATCH;
+    register Byte scan_end1  = scan[best_len-1];
+    register Byte scan_end   = scan[best_len];
+#endif
+
+    /* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16.
+     * It is easy to get rid of this optimization if necessary.
+     */
+    Assert(s->hash_bits >= 8 && MAX_MATCH == 258, "Code too clever");
+
+    /* Do not waste too much time if we already have a good match: */
+    if (s->prev_length >= s->good_match) {
+        chain_length >>= 2;
+    }
+    /* Do not look for matches beyond the end of the input. This is necessary
+     * to make deflate deterministic.
+     */
+    if ((uInt)nice_match > s->lookahead) nice_match = s->lookahead;
+
+    Assert((ulg)s->strstart <= s->window_size-MIN_LOOKAHEAD, "need lookahead");
+
+    do {
+        Assert(cur_match < s->strstart, "no future");
+        match = s->window + cur_match;
+
+        /* Skip to next match if the match length cannot increase
+         * or if the match length is less than 2:
+         */
+#if (defined(UNALIGNED_OK) && MAX_MATCH == 258)
+        /* This code assumes sizeof(unsigned short) == 2. Do not use
+         * UNALIGNED_OK if your compiler uses a different size.
+         */
+        if (*(ushf*)(match+best_len-1) != scan_end ||
+            *(ushf*)match != scan_start) continue;
+
+        /* It is not necessary to compare scan[2] and match[2] since they are
+         * always equal when the other bytes match, given that the hash keys
+         * are equal and that HASH_BITS >= 8. Compare 2 bytes at a time at
+         * strstart+3, +5, ... up to strstart+257. We check for insufficient
+         * lookahead only every 4th comparison; the 128th check will be made
+         * at strstart+257. If MAX_MATCH-2 is not a multiple of 8, it is
+         * necessary to put more guard bytes at the end of the window, or
+         * to check more often for insufficient lookahead.
+         */
+        Assert(scan[2] == match[2], "scan[2]?");
+        scan++, match++;
+        do {
+        } while (*(ushf*)(scan+=2) == *(ushf*)(match+=2) &&
+                 *(ushf*)(scan+=2) == *(ushf*)(match+=2) &&
+                 *(ushf*)(scan+=2) == *(ushf*)(match+=2) &&
+                 *(ushf*)(scan+=2) == *(ushf*)(match+=2) &&
+                 scan < strend);
+        /* The funny "do {}" generates better code on most compilers */
+
+        /* Here, scan <= window+strstart+257 */
+        Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan");
+        if (*scan == *match) scan++;
+
+        len = (MAX_MATCH - 1) - (int)(strend-scan);
+        scan = strend - (MAX_MATCH-1);
+
+#else /* UNALIGNED_OK */
+
+        if (match[best_len]   != scan_end  ||
+            match[best_len-1] != scan_end1 ||
+            *match            != *scan     ||
+            *++match          != scan[1])      continue;
+
+        /* The check at best_len-1 can be removed because it will be made
+         * again later. (This heuristic is not always a win.)
+         * It is not necessary to compare scan[2] and match[2] since they
+         * are always equal when the other bytes match, given that
+         * the hash keys are equal and that HASH_BITS >= 8.
+         */
+        scan += 2, match++;
+        Assert(*scan == *match, "match[2]?");
+
+        /* We check for insufficient lookahead only every 8th comparison;
+         * the 256th check will be made at strstart+258.
+         */
+        do {
+        } while (*++scan == *++match && *++scan == *++match &&
+                 *++scan == *++match && *++scan == *++match &&
+                 *++scan == *++match && *++scan == *++match &&
+                 *++scan == *++match && *++scan == *++match &&
+                 scan < strend);
+
+        Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan");
+
+        len = MAX_MATCH - (int)(strend - scan);
+        scan = strend - MAX_MATCH;
+
+#endif /* UNALIGNED_OK */
+
+        if (len > best_len) {
+            s->match_start = cur_match;
+            best_len = len;
+            if (len >= nice_match) break;
+#ifdef UNALIGNED_OK
+            scan_end = *(ushf*)(scan+best_len-1);
+#else
+            scan_end1  = scan[best_len-1];
+            scan_end   = scan[best_len];
+#endif
+        }
+    } while ((cur_match = prev[cur_match & wmask]) > limit
+             && --chain_length != 0);
+
+    if ((uInt)best_len <= s->lookahead) return (uInt)best_len;
+    return s->lookahead;
+}
+
+#else /* FASTEST */
+/* ---------------------------------------------------------------------------
+ * Optimized version for level == 1 only
+ */
+local uInt longest_match(s, cur_match)
+    deflate_state *s;
+    IPos cur_match;                             /* current match */
+{
+    register Bytef *scan = s->window + s->strstart; /* current string */
+    register Bytef *match;                       /* matched string */
+    register int len;                           /* length of current match */
+    register Bytef *strend = s->window + s->strstart + MAX_MATCH;
+
+    /* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16.
+     * It is easy to get rid of this optimization if necessary.
+     */
+    Assert(s->hash_bits >= 8 && MAX_MATCH == 258, "Code too clever");
+
+    Assert((ulg)s->strstart <= s->window_size-MIN_LOOKAHEAD, "need lookahead");
+
+    Assert(cur_match < s->strstart, "no future");
+
+    match = s->window + cur_match;
+
+    /* Return failure if the match length is less than 2:
+     */
+    if (match[0] != scan[0] || match[1] != scan[1]) return MIN_MATCH-1;
+
+    /* The check at best_len-1 can be removed because it will be made
+     * again later. (This heuristic is not always a win.)
+     * It is not necessary to compare scan[2] and match[2] since they
+     * are always equal when the other bytes match, given that
+     * the hash keys are equal and that HASH_BITS >= 8.
+     */
+    scan += 2, match += 2;
+    Assert(*scan == *match, "match[2]?");
+
+    /* We check for insufficient lookahead only every 8th comparison;
+     * the 256th check will be made at strstart+258.
+     */
+    do {
+    } while (*++scan == *++match && *++scan == *++match &&
+            *++scan == *++match && *++scan == *++match &&
+            *++scan == *++match && *++scan == *++match &&
+            *++scan == *++match && *++scan == *++match &&
+            scan < strend);
+
+    Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan");
+
+    len = MAX_MATCH - (int)(strend - scan);
+
+    if (len < MIN_MATCH) return MIN_MATCH - 1;
+
+    s->match_start = cur_match;
+    return len <= s->lookahead ? len : s->lookahead;
+}
+#endif /* FASTEST */
+#endif /* ASMV */
+
+#ifdef DEBUG
+/* ===========================================================================
+ * Check that the match at match_start is indeed a match.
+ */
+local void check_match(s, start, match, length)
+    deflate_state *s;
+    IPos start, match;
+    int length;
+{
+    /* check that the match is indeed a match */
+    if (zmemcmp(s->window + match,
+                s->window + start, length) != EQUAL) {
+        fprintf(stderr, " start %u, match %u, length %d\n",
+               start, match, length);
+        do {
+           fprintf(stderr, "%c%c", s->window[match++], s->window[start++]);
+       } while (--length != 0);
+        z_error("invalid match");
+    }
+    if (z_verbose > 1) {
+        fprintf(stderr,"\\[%d,%d]", start-match, length);
+        do { putc(s->window[start++], stderr); } while (--length != 0);
+    }
+}
+#else
+#  define check_match(s, start, match, length)
+#endif
+
+/* ===========================================================================
+ * Fill the window when the lookahead becomes insufficient.
+ * Updates strstart and lookahead.
+ *
+ * IN assertion: lookahead < MIN_LOOKAHEAD
+ * OUT assertions: strstart <= window_size-MIN_LOOKAHEAD
+ *    At least one byte has been read, or avail_in == 0; reads are
+ *    performed for at least two bytes (required for the zip translate_eol
+ *    option -- not supported here).
+ */
+local void fill_window(s)
+    deflate_state *s;
+{
+    register unsigned n, m;
+    register Posf *p;
+    unsigned more;    /* Amount of free space at the end of the window. */
+    uInt wsize = s->w_size;
+
+    do {
+        more = (unsigned)(s->window_size -(ulg)s->lookahead -(ulg)s->strstart);
+
+        /* Deal with !@#$% 64K limit: */
+        if (more == 0 && s->strstart == 0 && s->lookahead == 0) {
+            more = wsize;
+
+        } else if (more == (unsigned)(-1)) {
+            /* Very unlikely, but possible on 16 bit machine if strstart == 0
+             * and lookahead == 1 (input done one byte at time)
+             */
+            more--;
+
+        /* If the window is almost full and there is insufficient lookahead,
+         * move the upper half to the lower one to make room in the upper half.
+         */
+        } else if (s->strstart >= wsize+MAX_DIST(s)) {
+
+            zmemcpy(s->window, s->window+wsize, (unsigned)wsize);
+            s->match_start -= wsize;
+            s->strstart    -= wsize; /* we now have strstart >= MAX_DIST */
+            s->block_start -= (long) wsize;
+
+            /* Slide the hash table (could be avoided with 32 bit values
+               at the expense of memory usage). We slide even when level == 0
+               to keep the hash table consistent if we switch back to level > 0
+               later. (Using level 0 permanently is not an optimal usage of
+               zlib, so we don't care about this pathological case.)
+             */
+           n = s->hash_size;
+           p = &s->head[n];
+           do {
+               m = *--p;
+               *p = (Pos)(m >= wsize ? m-wsize : NIL);
+           } while (--n);
+
+           n = wsize;
+#ifndef FASTEST
+           p = &s->prev[n];
+           do {
+               m = *--p;
+               *p = (Pos)(m >= wsize ? m-wsize : NIL);
+               /* If n is not on any hash chain, prev[n] is garbage but
+                * its value will never be used.
+                */
+           } while (--n);
+#endif
+            more += wsize;
+        }
+        if (s->strm->avail_in == 0) return;
+
+        /* If there was no sliding:
+         *    strstart <= WSIZE+MAX_DIST-1 && lookahead <= MIN_LOOKAHEAD - 1 &&
+         *    more == window_size - lookahead - strstart
+         * => more >= window_size - (MIN_LOOKAHEAD-1 + WSIZE + MAX_DIST-1)
+         * => more >= window_size - 2*WSIZE + 2
+         * In the BIG_MEM or MMAP case (not yet supported),
+         *   window_size == input_size + MIN_LOOKAHEAD  &&
+         *   strstart + s->lookahead <= input_size => more >= MIN_LOOKAHEAD.
+         * Otherwise, window_size == 2*WSIZE so more >= 2.
+         * If there was sliding, more >= WSIZE. So in all cases, more >= 2.
+         */
+        Assert(more >= 2, "more < 2");
+
+        n = read_buf(s->strm, s->window + s->strstart + s->lookahead, more);
+        s->lookahead += n;
+
+        /* Initialize the hash value now that we have some input: */
+        if (s->lookahead >= MIN_MATCH) {
+            s->ins_h = s->window[s->strstart];
+            UPDATE_HASH(s, s->ins_h, s->window[s->strstart+1]);
+#if MIN_MATCH != 3
+            Call UPDATE_HASH() MIN_MATCH-3 more times
+#endif
+        }
+        /* If the whole input has less than MIN_MATCH bytes, ins_h is garbage,
+         * but this is not important since only literal bytes will be emitted.
+         */
+
+    } while (s->lookahead < MIN_LOOKAHEAD && s->strm->avail_in != 0);
+}
+
+/* ===========================================================================
+ * Flush the current block, with given end-of-file flag.
+ * IN assertion: strstart is set to the end of the current match.
+ */
+#define FLUSH_BLOCK_ONLY(s, eof) { \
+   _tr_flush_block(s, (s->block_start >= 0L ? \
+                   (charf *)&s->window[(unsigned)s->block_start] : \
+                   (charf *)Z_NULL), \
+               (ulg)((long)s->strstart - s->block_start), \
+               (eof)); \
+   s->block_start = s->strstart; \
+   flush_pending(s->strm); \
+   Tracev((stderr,"[FLUSH]")); \
+}
+
+/* Same but force premature exit if necessary. */
+#define FLUSH_BLOCK(s, eof) { \
+   FLUSH_BLOCK_ONLY(s, eof); \
+   if (s->strm->avail_out == 0) return (eof) ? finish_started : need_more; \
+}
+
+/* ===========================================================================
+ * Copy without compression as much as possible from the input stream, return
+ * the current block state.
+ * This function does not insert new strings in the dictionary since
+ * uncompressible data is probably not useful. This function is used
+ * only for the level=0 compression option.
+ * NOTE: this function should be optimized to avoid extra copying from
+ * window to pending_buf.
+ */
+local block_state deflate_stored(s, flush)
+    deflate_state *s;
+    int flush;
+{
+    /* Stored blocks are limited to 0xffff bytes, pending_buf is limited
+     * to pending_buf_size, and each stored block has a 5 byte header:
+     */
+    ulg max_block_size = 0xffff;
+    ulg max_start;
+
+    if (max_block_size > s->pending_buf_size - 5) {
+        max_block_size = s->pending_buf_size - 5;
+    }
+
+    /* Copy as much as possible from input to output: */
+    for (;;) {
+        /* Fill the window as much as possible: */
+        if (s->lookahead <= 1) {
+
+            Assert(s->strstart < s->w_size+MAX_DIST(s) ||
+                  s->block_start >= (long)s->w_size, "slide too late");
+
+            fill_window(s);
+            if (s->lookahead == 0 && flush == Z_NO_FLUSH) return need_more;
+
+            if (s->lookahead == 0) break; /* flush the current block */
+        }
+       Assert(s->block_start >= 0L, "block gone");
+
+       s->strstart += s->lookahead;
+       s->lookahead = 0;
+
+       /* Emit a stored block if pending_buf will be full: */
+       max_start = s->block_start + max_block_size;
+        if (s->strstart == 0 || (ulg)s->strstart >= max_start) {
+           /* strstart == 0 is possible when wraparound on 16-bit machine */
+           s->lookahead = (uInt)(s->strstart - max_start);
+           s->strstart = (uInt)max_start;
+            FLUSH_BLOCK(s, 0);
+       }
+       /* Flush if we may have to slide, otherwise block_start may become
+         * negative and the data will be gone:
+         */
+        if (s->strstart - (uInt)s->block_start >= MAX_DIST(s)) {
+            FLUSH_BLOCK(s, 0);
+       }
+    }
+    FLUSH_BLOCK(s, flush == Z_FINISH);
+    return flush == Z_FINISH ? finish_done : block_done;
+}
+
+/* ===========================================================================
+ * Compress as much as possible from the input stream, return the current
+ * block state.
+ * This function does not perform lazy evaluation of matches and inserts
+ * new strings in the dictionary only for unmatched strings or for short
+ * matches. It is used only for the fast compression options.
+ */
+local block_state deflate_fast(s, flush)
+    deflate_state *s;
+    int flush;
+{
+    IPos hash_head = NIL; /* head of the hash chain */
+    int bflush;           /* set if current block must be flushed */
+
+    for (;;) {
+        /* Make sure that we always have enough lookahead, except
+         * at the end of the input file. We need MAX_MATCH bytes
+         * for the next match, plus MIN_MATCH bytes to insert the
+         * string following the next match.
+         */
+        if (s->lookahead < MIN_LOOKAHEAD) {
+            fill_window(s);
+            if (s->lookahead < MIN_LOOKAHEAD && flush == Z_NO_FLUSH) {
+               return need_more;
+           }
+            if (s->lookahead == 0) break; /* flush the current block */
+        }
+
+        /* Insert the string window[strstart .. strstart+2] in the
+         * dictionary, and set hash_head to the head of the hash chain:
+         */
+        if (s->lookahead >= MIN_MATCH) {
+            INSERT_STRING(s, s->strstart, hash_head);
+        }
+
+        /* Find the longest match, discarding those <= prev_length.
+         * At this point we have always match_length < MIN_MATCH
+         */
+        if (hash_head != NIL && s->strstart - hash_head <= MAX_DIST(s)) {
+            /* To simplify the code, we prevent matches with the string
+             * of window index 0 (in particular we have to avoid a match
+             * of the string with itself at the start of the input file).
+             */
+            if (s->strategy != Z_HUFFMAN_ONLY) {
+                s->match_length = longest_match (s, hash_head);
+            }
+            /* longest_match() sets match_start */
+        }
+        if (s->match_length >= MIN_MATCH) {
+            check_match(s, s->strstart, s->match_start, s->match_length);
+
+            _tr_tally_dist(s, s->strstart - s->match_start,
+                           s->match_length - MIN_MATCH, bflush);
+
+            s->lookahead -= s->match_length;
+
+            /* Insert new strings in the hash table only if the match length
+             * is not too large. This saves time but degrades compression.
+             */
+#ifndef FASTEST
+            if (s->match_length <= s->max_insert_length &&
+                s->lookahead >= MIN_MATCH) {
+                s->match_length--; /* string at strstart already in hash table */
+                do {
+                    s->strstart++;
+                    INSERT_STRING(s, s->strstart, hash_head);
+                    /* strstart never exceeds WSIZE-MAX_MATCH, so there are
+                     * always MIN_MATCH bytes ahead.
+                     */
+                } while (--s->match_length != 0);
+                s->strstart++; 
+            } else
+#endif
+           {
+                s->strstart += s->match_length;
+                s->match_length = 0;
+                s->ins_h = s->window[s->strstart];
+                UPDATE_HASH(s, s->ins_h, s->window[s->strstart+1]);
+#if MIN_MATCH != 3
+                Call UPDATE_HASH() MIN_MATCH-3 more times
+#endif
+                /* If lookahead < MIN_MATCH, ins_h is garbage, but it does not
+                 * matter since it will be recomputed at next deflate call.
+                 */
+            }
+        } else {
+            /* No match, output a literal byte */
+            Tracevv((stderr,"%c", s->window[s->strstart]));
+            _tr_tally_lit (s, s->window[s->strstart], bflush);
+            s->lookahead--;
+            s->strstart++; 
+        }
+        if (bflush) FLUSH_BLOCK(s, 0);
+    }
+    FLUSH_BLOCK(s, flush == Z_FINISH);
+    return flush == Z_FINISH ? finish_done : block_done;
+}
+
+/* ===========================================================================
+ * Same as above, but achieves better compression. We use a lazy
+ * evaluation for matches: a match is finally adopted only if there is
+ * no better match at the next window position.
+ */
+local block_state deflate_slow(s, flush)
+    deflate_state *s;
+    int flush;
+{
+    IPos hash_head = NIL;    /* head of hash chain */
+    int bflush;              /* set if current block must be flushed */
+
+    /* Process the input block. */
+    for (;;) {
+        /* Make sure that we always have enough lookahead, except
+         * at the end of the input file. We need MAX_MATCH bytes
+         * for the next match, plus MIN_MATCH bytes to insert the
+         * string following the next match.
+         */
+        if (s->lookahead < MIN_LOOKAHEAD) {
+            fill_window(s);
+            if (s->lookahead < MIN_LOOKAHEAD && flush == Z_NO_FLUSH) {
+               return need_more;
+           }
+            if (s->lookahead == 0) break; /* flush the current block */
+        }
+
+        /* Insert the string window[strstart .. strstart+2] in the
+         * dictionary, and set hash_head to the head of the hash chain:
+         */
+        if (s->lookahead >= MIN_MATCH) {
+            INSERT_STRING(s, s->strstart, hash_head);
+        }
+
+        /* Find the longest match, discarding those <= prev_length.
+         */
+        s->prev_length = s->match_length, s->prev_match = s->match_start;
+        s->match_length = MIN_MATCH-1;
+
+        if (hash_head != NIL && s->prev_length < s->max_lazy_match &&
+            s->strstart - hash_head <= MAX_DIST(s)) {
+            /* To simplify the code, we prevent matches with the string
+             * of window index 0 (in particular we have to avoid a match
+             * of the string with itself at the start of the input file).
+             */
+            if (s->strategy != Z_HUFFMAN_ONLY) {
+                s->match_length = longest_match (s, hash_head);
+            }
+            /* longest_match() sets match_start */
+
+            if (s->match_length <= 5 && (s->strategy == Z_FILTERED ||
+                 (s->match_length == MIN_MATCH &&
+                  s->strstart - s->match_start > TOO_FAR))) {
+
+                /* If prev_match is also MIN_MATCH, match_start is garbage
+                 * but we will ignore the current match anyway.
+                 */
+                s->match_length = MIN_MATCH-1;
+            }
+        }
+        /* If there was a match at the previous step and the current
+         * match is not better, output the previous match:
+         */
+        if (s->prev_length >= MIN_MATCH && s->match_length <= s->prev_length) {
+            uInt max_insert = s->strstart + s->lookahead - MIN_MATCH;
+            /* Do not insert strings in hash table beyond this. */
+
+            check_match(s, s->strstart-1, s->prev_match, s->prev_length);
+
+            _tr_tally_dist(s, s->strstart -1 - s->prev_match,
+                          s->prev_length - MIN_MATCH, bflush);
+
+            /* Insert in hash table all strings up to the end of the match.
+             * strstart-1 and strstart are already inserted. If there is not
+             * enough lookahead, the last two strings are not inserted in
+             * the hash table.
+             */
+            s->lookahead -= s->prev_length-1;
+            s->prev_length -= 2;
+            do {
+                if (++s->strstart <= max_insert) {
+                    INSERT_STRING(s, s->strstart, hash_head);
+                }
+            } while (--s->prev_length != 0);
+            s->match_available = 0;
+            s->match_length = MIN_MATCH-1;
+            s->strstart++;
+
+            if (bflush) FLUSH_BLOCK(s, 0);
+
+        } else if (s->match_available) {
+            /* If there was no match at the previous position, output a
+             * single literal. If there was a match but the current match
+             * is longer, truncate the previous match to a single literal.
+             */
+            Tracevv((stderr,"%c", s->window[s->strstart-1]));
+           _tr_tally_lit(s, s->window[s->strstart-1], bflush);
+           if (bflush) {
+                FLUSH_BLOCK_ONLY(s, 0);
+            }
+            s->strstart++;
+            s->lookahead--;
+            if (s->strm->avail_out == 0) return need_more;
+        } else {
+            /* There is no previous match to compare with, wait for
+             * the next step to decide.
+             */
+            s->match_available = 1;
+            s->strstart++;
+            s->lookahead--;
+        }
+    }
+    Assert (flush != Z_NO_FLUSH, "no flush?");
+    if (s->match_available) {
+        Tracevv((stderr,"%c", s->window[s->strstart-1]));
+        _tr_tally_lit(s, s->window[s->strstart-1], bflush);
+        s->match_available = 0;
+    }
+    FLUSH_BLOCK(s, flush == Z_FINISH);
+    return flush == Z_FINISH ? finish_done : block_done;
+}
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/deflate.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,318 @@
+/* deflate.h -- internal compression state
+ * Copyright (C) 1995-2002 Jean-loup Gailly
+ * For conditions of distribution and use, see copyright notice in zlib.h 
+ */
+
+/* WARNING: this file should *not* be used by applications. It is
+   part of the implementation of the compression library and is
+   subject to change. Applications should only use zlib.h.
+ */
+
+/* @(#) $Id: deflate.h,v 1.5 2004-07-10 07:48:38 mcr Exp $ */
+
+#ifndef _DEFLATE_H
+#define _DEFLATE_H
+
+#include "zlib/zutil.h"
+
+/* ===========================================================================
+ * Internal compression state.
+ */
+
+#define LENGTH_CODES 29
+/* number of length codes, not counting the special END_BLOCK code */
+
+#define LITERALS  256
+/* number of literal bytes 0..255 */
+
+#define L_CODES (LITERALS+1+LENGTH_CODES)
+/* number of Literal or Length codes, including the END_BLOCK code */
+
+#define D_CODES   30
+/* number of distance codes */
+
+#define BL_CODES  19
+/* number of codes used to transfer the bit lengths */
+
+#define HEAP_SIZE (2*L_CODES+1)
+/* maximum heap size */
+
+#define MAX_BITS 15
+/* All codes must not exceed MAX_BITS bits */
+
+#define INIT_STATE    42
+#define BUSY_STATE   113
+#define FINISH_STATE 666
+/* Stream status */
+
+
+/* Data structure describing a single value and its code string. */
+typedef struct ct_data_s {
+    union {
+        ush  freq;       /* frequency count */
+        ush  code;       /* bit string */
+    } fc;
+    union {
+        ush  dad;        /* father node in Huffman tree */
+        ush  len;        /* length of bit string */
+    } dl;
+} FAR ct_data;
+
+#define Freq fc.freq
+#define Code fc.code
+#define Dad  dl.dad
+#define Len  dl.len
+
+typedef struct static_tree_desc_s  static_tree_desc;
+
+typedef struct tree_desc_s {
+    ct_data *dyn_tree;           /* the dynamic tree */
+    int     max_code;            /* largest code with non zero frequency */
+    static_tree_desc *stat_desc; /* the corresponding static tree */
+} FAR tree_desc;
+
+typedef ush Pos;
+typedef Pos FAR Posf;
+typedef unsigned IPos;
+
+/* A Pos is an index in the character window. We use short instead of int to
+ * save space in the various tables. IPos is used only for parameter passing.
+ */
+
+typedef struct internal_state {
+    z_streamp strm;      /* pointer back to this zlib stream */
+    int   status;        /* as the name implies */
+    Bytef *pending_buf;  /* output still pending */
+    ulg   pending_buf_size; /* size of pending_buf */
+    Bytef *pending_out;  /* next pending byte to output to the stream */
+    int   pending;       /* nb of bytes in the pending buffer */
+    int   noheader;      /* suppress zlib header and adler32 */
+    Byte  data_type;     /* UNKNOWN, BINARY or ASCII */
+    Byte  method;        /* STORED (for zip only) or DEFLATED */
+    int   last_flush;    /* value of flush param for previous deflate call */
+
+                /* used by deflate.c: */
+
+    uInt  w_size;        /* LZ77 window size (32K by default) */
+    uInt  w_bits;        /* log2(w_size)  (8..16) */
+    uInt  w_mask;        /* w_size - 1 */
+
+    Bytef *window;
+    /* Sliding window. Input bytes are read into the second half of the window,
+     * and move to the first half later to keep a dictionary of at least wSize
+     * bytes. With this organization, matches are limited to a distance of
+     * wSize-MAX_MATCH bytes, but this ensures that IO is always
+     * performed with a length multiple of the block size. Also, it limits
+     * the window size to 64K, which is quite useful on MSDOS.
+     * To do: use the user input buffer as sliding window.
+     */
+
+    ulg window_size;
+    /* Actual size of window: 2*wSize, except when the user input buffer
+     * is directly used as sliding window.
+     */
+
+    Posf *prev;
+    /* Link to older string with same hash index. To limit the size of this
+     * array to 64K, this link is maintained only for the last 32K strings.
+     * An index in this array is thus a window index modulo 32K.
+     */
+
+    Posf *head; /* Heads of the hash chains or NIL. */
+
+    uInt  ins_h;          /* hash index of string to be inserted */
+    uInt  hash_size;      /* number of elements in hash table */
+    uInt  hash_bits;      /* log2(hash_size) */
+    uInt  hash_mask;      /* hash_size-1 */
+
+    uInt  hash_shift;
+    /* Number of bits by which ins_h must be shifted at each input
+     * step. It must be such that after MIN_MATCH steps, the oldest
+     * byte no longer takes part in the hash key, that is:
+     *   hash_shift * MIN_MATCH >= hash_bits
+     */
+
+    long block_start;
+    /* Window position at the beginning of the current output block. Gets
+     * negative when the window is moved backwards.
+     */
+
+    uInt match_length;           /* length of best match */
+    IPos prev_match;             /* previous match */
+    int match_available;         /* set if previous match exists */
+    uInt strstart;               /* start of string to insert */
+    uInt match_start;            /* start of matching string */
+    uInt lookahead;              /* number of valid bytes ahead in window */
+
+    uInt prev_length;
+    /* Length of the best match at previous step. Matches not greater than this
+     * are discarded. This is used in the lazy match evaluation.
+     */
+
+    uInt max_chain_length;
+    /* To speed up deflation, hash chains are never searched beyond this
+     * length.  A higher limit improves compression ratio but degrades the
+     * speed.
+     */
+
+    uInt max_lazy_match;
+    /* Attempt to find a better match only when the current match is strictly
+     * smaller than this value. This mechanism is used only for compression
+     * levels >= 4.
+     */
+#   define max_insert_length  max_lazy_match
+    /* Insert new strings in the hash table only if the match length is not
+     * greater than this length. This saves time but degrades compression.
+     * max_insert_length is used only for compression levels <= 3.
+     */
+
+    int level;    /* compression level (1..9) */
+    int strategy; /* favor or force Huffman coding*/
+
+    uInt good_match;
+    /* Use a faster search when the previous match is longer than this */
+
+    int nice_match; /* Stop searching when current match exceeds this */
+
+                /* used by trees.c: */
+    /* Didn't use ct_data typedef below to supress compiler warning */
+    struct ct_data_s dyn_ltree[HEAP_SIZE];   /* literal and length tree */
+    struct ct_data_s dyn_dtree[2*D_CODES+1]; /* distance tree */
+    struct ct_data_s bl_tree[2*BL_CODES+1];  /* Huffman tree for bit lengths */
+
+    struct tree_desc_s l_desc;               /* desc. for literal tree */
+    struct tree_desc_s d_desc;               /* desc. for distance tree */
+    struct tree_desc_s bl_desc;              /* desc. for bit length tree */
+
+    ush bl_count[MAX_BITS+1];
+    /* number of codes at each bit length for an optimal tree */
+
+    int heap[2*L_CODES+1];      /* heap used to build the Huffman trees */
+    int heap_len;               /* number of elements in the heap */
+    int heap_max;               /* element of largest frequency */
+    /* The sons of heap[n] are heap[2*n] and heap[2*n+1]. heap[0] is not used.
+     * The same heap array is used to build all trees.
+     */
+
+    uch depth[2*L_CODES+1];
+    /* Depth of each subtree used as tie breaker for trees of equal frequency
+     */
+
+    uchf *l_buf;          /* buffer for literals or lengths */
+
+    uInt  lit_bufsize;
+    /* Size of match buffer for literals/lengths.  There are 4 reasons for
+     * limiting lit_bufsize to 64K:
+     *   - frequencies can be kept in 16 bit counters
+     *   - if compression is not successful for the first block, all input
+     *     data is still in the window so we can still emit a stored block even
+     *     when input comes from standard input.  (This can also be done for
+     *     all blocks if lit_bufsize is not greater than 32K.)
+     *   - if compression is not successful for a file smaller than 64K, we can
+     *     even emit a stored file instead of a stored block (saving 5 bytes).
+     *     This is applicable only for zip (not gzip or zlib).
+     *   - creating new Huffman trees less frequently may not provide fast
+     *     adaptation to changes in the input data statistics. (Take for
+     *     example a binary file with poorly compressible code followed by
+     *     a highly compressible string table.) Smaller buffer sizes give
+     *     fast adaptation but have of course the overhead of transmitting
+     *     trees more frequently.
+     *   - I can't count above 4
+     */
+
+    uInt last_lit;      /* running index in l_buf */
+
+    ushf *d_buf;
+    /* Buffer for distances. To simplify the code, d_buf and l_buf have
+     * the same number of elements. To use different lengths, an extra flag
+     * array would be necessary.
+     */
+
+    ulg opt_len;        /* bit length of current block with optimal trees */
+    ulg static_len;     /* bit length of current block with static trees */
+    uInt matches;       /* number of string matches in current block */
+    int last_eob_len;   /* bit length of EOB code for last block */
+
+#ifdef DEBUG
+    ulg compressed_len; /* total bit length of compressed file mod 2^32 */
+    ulg bits_sent;      /* bit length of compressed data sent mod 2^32 */
+#endif
+
+    ush bi_buf;
+    /* Output buffer. bits are inserted starting at the bottom (least
+     * significant bits).
+     */
+    int bi_valid;
+    /* Number of valid bits in bi_buf.  All bits above the last valid bit
+     * are always zero.
+     */
+
+} FAR deflate_state;
+
+/* Output a byte on the stream.
+ * IN assertion: there is enough room in pending_buf.
+ */
+#define put_byte(s, c) {s->pending_buf[s->pending++] = (c);}
+
+
+#define MIN_LOOKAHEAD (MAX_MATCH+MIN_MATCH+1)
+/* Minimum amount of lookahead, except at the end of the input file.
+ * See deflate.c for comments about the MIN_MATCH+1.
+ */
+
+#define MAX_DIST(s)  ((s)->w_size-MIN_LOOKAHEAD)
+/* In order to simplify the code, particularly on 16 bit machines, match
+ * distances are limited to MAX_DIST instead of WSIZE.
+ */
+
+        /* in trees.c */
+void _tr_init         OF((deflate_state *s));
+int  _tr_tally        OF((deflate_state *s, unsigned dist, unsigned lc));
+void _tr_flush_block  OF((deflate_state *s, charf *buf, ulg stored_len,
+                         int eof));
+void _tr_align        OF((deflate_state *s));
+void _tr_stored_block OF((deflate_state *s, charf *buf, ulg stored_len,
+                          int eof));
+
+#define d_code(dist) \
+   ((dist) < 256 ? _dist_code[dist] : _dist_code[256+((dist)>>7)])
+/* Mapping from a distance to a distance code. dist is the distance - 1 and
+ * must not have side effects. _dist_code[256] and _dist_code[257] are never
+ * used.
+ */
+
+#ifndef DEBUG
+/* Inline versions of _tr_tally for speed: */
+
+#if defined(GEN_TREES_H) || !defined(STDC)
+  extern uch _length_code[];
+  extern uch _dist_code[];
+#else
+  extern const uch _length_code[];
+  extern const uch _dist_code[];
+#endif
+
+# define _tr_tally_lit(s, c, flush) \
+  { uch cc = (c); \
+    s->d_buf[s->last_lit] = 0; \
+    s->l_buf[s->last_lit++] = cc; \
+    s->dyn_ltree[cc].Freq++; \
+    flush = (s->last_lit == s->lit_bufsize-1); \
+   }
+# define _tr_tally_dist(s, distance, length, flush) \
+  { uch len = (length); \
+    ush dist = (distance); \
+    s->d_buf[s->last_lit] = dist; \
+    s->l_buf[s->last_lit++] = len; \
+    dist--; \
+    s->dyn_ltree[_length_code[len]+LITERALS+1].Freq++; \
+    s->dyn_dtree[d_code(dist)].Freq++; \
+    flush = (s->last_lit == s->lit_bufsize-1); \
+  }
+#else
+# define _tr_tally_lit(s, c, flush) flush = _tr_tally(s, 0, c)
+# define _tr_tally_dist(s, distance, length, flush) \
+              flush = _tr_tally(s, distance, length) 
+#endif
+
+#endif /* _DEFLATE_H */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/des/COPYRIGHT     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,50 @@
+Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+All rights reserved.
+
+This package is an DES implementation written by Eric Young (eay@cryptsoft.com).
+The implementation was written so as to conform with MIT's libdes.
+
+This library is free for commercial and non-commercial use as long as
+the following conditions are aheared to.  The following conditions
+apply to all code found in this distribution.
+
+Copyright remains Eric Young's, and as such any Copyright notices in
+the code are not to be removed.
+If this package is used in a product, Eric Young should be given attribution
+as the author of that the SSL library.  This can be in the form of a textual
+message at program startup or in documentation (online or textual) provided
+with the package.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+1. Redistributions of source code must retain the copyright
+   notice, this list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+3. All advertising materials mentioning features or use of this software
+   must display the following acknowledgement:
+   This product includes software developed by Eric Young (eay@cryptsoft.com)
+
+THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGE.
+
+The license and distribution terms for any publically available version or
+derivative of this code cannot be changed.  i.e. this code cannot simply be
+copied and put under another distrubution license
+[including the GNU Public License.]
+
+The reason behind this being stated in this direct manner is past
+experience in code simply being copied and the attribution removed
+from it and then being distributed as part of other packages. This
+implementation was a non-trivial and unpaid effort.
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/des/INSTALL     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,69 @@
+Check the CC and CFLAGS lines in the makefile
+
+If your C library does not support the times(3) function, change the
+#define TIMES to
+#undef TIMES in speed.c
+If it does, check the HZ value for the times(3) function.
+If your system does not define CLK_TCK it will be assumed to
+be 100.0.
+
+If possible use gcc v 2.7.?
+Turn on the maximum optimising (normally '-O3 -fomit-frame-pointer' for gcc)
+In recent times, some system compilers give better performace.
+
+type 'make'
+
+run './destest' to check things are ok.
+run './rpw' to check the tty code for reading passwords works.
+run './speed' to see how fast those optimisations make the library run :-)
+run './des_opts' to determin the best compile time options.
+
+The output from des_opts should be put in the makefile options and des_enc.c
+should be rebuilt.  For 64 bit computers, do not use the DES_PTR option.
+For the DEC Alpha, edit des.h and change DES_LONG to 'unsigned int'
+and then you can use the 'DES_PTR' option.
+
+The file options.txt has the options listed for best speed on quite a
+few systems.  Look and the options (UNROLL, PTR, RISC2 etc) and then
+turn on the relevent option in the Makefile
+
+There are some special Makefile targets that make life easier.
+make cc                - standard cc build
+make gcc       - standard gcc build
+make x86-elf   - x86 assembler (elf), linux-elf.
+make x86-out   - x86 assembler (a.out), FreeBSD
+make x86-solaris- x86 assembler
+make x86-bsdi  - x86 assembler (a.out with primative assembler).
+
+If at all possible use the assembler (for Windows NT/95, use
+asm/win32.obj to link with).  The x86 assembler is very very fast.
+
+A make install will by default install
+libdes.a      in /usr/local/lib/libdes.a
+des           in /usr/local/bin/des
+des_crypt.man in /usr/local/man/man3/des_crypt.3
+des.man       in /usr/local/man/man1/des.1
+des.h         in /usr/include/des.h
+
+des(1) should be compatible with sunOS's but I have been unable to
+test it.
+
+These routines should compile on MSDOS, most 32bit and 64bit version
+of Unix (BSD and SYSV) and VMS, without modification.
+The only problems should be #include files that are in the wrong places.
+
+These routines can be compiled under MSDOS.
+I have successfully encrypted files using des(1) under MSDOS and then
+decrypted the files on a SparcStation.
+I have been able to compile and test the routines with
+Microsoft C v 5.1 and Turbo C v 2.0.
+The code in this library is in no way optimised for the 16bit
+operation of MSDOS.
+
+When building for glibc, ignore all of the above and just unpack into
+glibc-1.??/des and then gmake as per normal.
+
+As a final note on performace.  Certain CPUs like sparcs and Alpha often give
+a %10 speed difference depending on the link order.  It is rather anoying
+when one program reports 'x' DES encrypts a second and another reports
+'x*0.9' the speed.
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/des/Makefile     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,63 @@
+# Makefile for KLIPS kernel code as a module    for 2.6 kernels
+#
+# Makefile for KLIPS kernel code as a module
+# Copyright (C) 1998, 1999, 2000,2001  Richard Guy Briggs.
+# Copyright (C) 2002-2004      Michael Richardson <mcr@freeswan.org>
+# 
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the
+# Free Software Foundation; either version 2 of the License, or (at your
+# option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+# 
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+# for more details.
+#
+# RCSID $Id: Makefile.fs2_6,v 1.2.2.1 2005-08-12 16:10:57 ken Exp $
+#
+# Note! Dependencies are done automagically by 'make dep', which also
+# removes any old dependencies. DON'T put your own dependencies here
+# unless it's something special (ie not a .c file).
+#
+
+obj-$(CONFIG_KLIPS_ENC_3DES) += ipsec_alg_3des.o
+obj-$(CONFIG_KLIPS_ENC_3DES) += cbc_enc.o
+obj-$(CONFIG_KLIPS_ENC_3DES) += ecb_enc.o
+obj-$(CONFIG_KLIPS_ENC_3DES) += set_key.o
+
+ifeq ($(strip ${SUBARCH}),)
+SUBARCH:=${ARCH}
+endif
+
+# the assembly version expects frame pointers, which are
+# optional in many kernel builds. If you want speed, you should
+# probably use cryptoapi code instead.
+USEASSEMBLY=${SUBARCH}${CONFIG_FRAME_POINTER}
+ifeq (${USEASSEMBLY},i386y)
+obj-$(CONFIG_KLIPS_ENC_3DES) += dx86unix.o
+else
+obj-$(CONFIG_KLIPS_ENC_3DES) += des_enc.o
+endif
+
+#
+# $Log: Makefile.fs2_6,v $
+# Revision 1.2.2.1  2005-08-12 16:10:57  ken
+# do not use assembly code with there are no frame pointers
+#
+# Revision 1.3  2005/08/12 14:13:59  mcr
+#      do not use assembly code with there are no frame pointers,
+#      as it does not have the right linkages.
+#
+# Revision 1.2  2005/04/29 05:13:07  mcr
+#      3DES algorithm code.
+#
+# Revision 1.1  2004/08/17 03:27:30  mcr
+#      klips 2.6 edits.
+#
+#
+# Local Variables:
+# compile-command: "(cd ../../.. && source umlsetup.sh && make -C ${POOLSPACE} module/ipsec.o)"
+# End Variables:
+#
+
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/des/README     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,54 @@
+
+               libdes, Version 4.01 10-Jan-97
+
+               Copyright (c) 1997, Eric Young
+                         All rights reserved.
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms specified in COPYRIGHT.
+    
+--
+The primary ftp site for this library is
+ftp://ftp.psy.uq.oz.au/pub/Crypto/DES/libdes-x.xx.tar.gz
+libdes is now also shipped with SSLeay.  Primary ftp site of
+ftp://ftp.psy.uq.oz.au/pub/Crypto/SSL/SSLeay-x.x.x.tar.gz
+
+The best way to build this library is to build it as part of SSLeay.
+
+This kit builds a DES encryption library and a DES encryption program.
+It supports ecb, cbc, ofb, cfb, triple ecb, triple cbc, triple ofb,
+triple cfb, desx, and MIT's pcbc encryption modes and also has a fast
+implementation of crypt(3).
+It contains support routines to read keys from a terminal,
+generate a random key, generate a key from an arbitrary length string,
+read/write encrypted data from/to a file descriptor.
+
+The implementation was written so as to conform with the manual entry
+for the des_crypt(3) library routines from MIT's project Athena.
+
+destest should be run after compilation to test the des routines.
+rpw should be run after compilation to test the read password routines.
+The des program is a replacement for the sun des command.  I believe it
+conforms to the sun version.
+
+The Imakefile is setup for use in the kerberos distribution.
+
+These routines are best compiled with gcc or any other good
+optimising compiler.
+Just turn you optimiser up to the highest settings and run destest
+after the build to make sure everything works.
+
+I believe these routines are close to the fastest and most portable DES
+routines that use small lookup tables (4.5k) that are publicly available.
+The fcrypt routine is faster than ufc's fcrypt (when compiling with
+gcc2 -O2) on the sparc 2 (1410 vs 1270) but is not so good on other machines
+(on a sun3/260 168 vs 336).  It is a function of CPU on chip cache size.
+[ 10-Jan-97 and a function of an incorrect speed testing program in
+  ufc which gave much better test figures that reality ].
+
+It is worth noting that on sparc and Alpha CPUs, performance of the DES
+library can vary by upto %10 due to the positioning of files after application
+linkage.
+
+Eric Young (eay@cryptsoft.com)
+
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/des/README.freeswan     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,33 @@
+The only changes the FreeS/WAN project has made to libdes-lite 4.04b are:
+
+We #ifdef-ed the declaration of DES_LONG in des.h, so it's more efficient
+on the Alpha, instead of just noting the issue in a comment. 
+
+We #ifdef-ed out the des_options() function in ecb_enc.c, because we don't
+use it, and its call to sprintf() can cause subtle difficulties when KLIPS
+is built as a module (depending on details of Linux configuration options).
+
+We changed some instances of CC=$(CC) in the Makefile to CC='$(CC)' to make
+it cope better with Linux kernel Makefile stupidities, and took out an
+explicit CC=gcc (unwise on systems with strange compilers).
+
+We deleted some references to <stdio.h> and <stdlib.h>, and a declaration
+of one function found only in the full libdes (not in libdes-lite), to
+avoid dragging in bits of stdio/stdlib unnecessarily.  (Our thanks to Hans
+Schultz for spotting this and pointing out the fixes.)
+
+We deleted a couple of .obj files in the asm subdirectory, which appear to
+have been included in the original library by accident. 
+
+We have added an include of our Makefile.inc file, to permit overriding
+things like choice of compiler (although the libdes Makefile would
+probably need some work to make this effective).
+
+
+
+Note that Eric Young is no longer at the email address listed in these
+files, and is (alas) no longer working on free crypto software. 
+
+
+
+This file is RCSID $Id: README.freeswan,v 1.12 2004-07-10 08:06:51 mcr Exp $
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/des/VERSION     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,406 @@
+Version 4.04
+       Fixed a few tests in destest.  Also added x86 assember for
+       des_ncbc_encrypt() which is the standard cbc mode function.
+       This makes a very very large performace difference.
+       Ariel Glenn ariel@columbia.edu reports that the terminal
+       'turn echo off' can return (errno == EINVAL) under solaris
+       when redirection is used.  So I now catch that as well as ENOTTY.
+
+
+Version 4.03
+       Left a static out of enc_write.c, which caused to buffer to be
+       continiously malloc()ed.  Does anyone use these functions?  I keep
+       on feeling like removing them since I only had these in there
+       for a version of kerberised login.  Anyway, this was pointed out
+       by Theo de Raadt <deraadt@cvs.openbsd.org>
+       The 'n' bit ofb code was wrong, it was not shifting the shift
+       register. It worked correctly for n == 64.  Thanks to
+       Gigi Ankeny <Gigi.Ankeny@Eng.Sun.COM> for pointing this one out.
+
+Version 4.02
+       I was doing 'if (memcmp(weak_keys[i],key,sizeof(key)) == 0)'
+       when checking for weak keys which is wrong :-(, pointed out by
+       Markus F.X.J. Oberhumer <markus.oberhumer@jk.uni-linz.ac.at>.
+
+Version 4.01
+       Even faster inner loop in the DES assembler for x86 and a modification
+       for IP/FP which is faster on x86.  Both of these changes are
+       from Svend Olaf Mikkelsen <svolaf@inet.uni-c.dk>.  His
+       changes make the assembler run %40 faster on a pentium.  This is just
+       a case of getting the instruction sequence 'just right'.
+       All credit to 'Svend' :-)
+       Quite a few special x86 'make' targets.
+       A libdes-l (lite) distribution.
+
+Version 4.00
+       After a bit of a pause, I'll up the major version number since this
+       is mostly a performace release.  I've added x86 assembler and
+       added more options for performance.  A %28 speedup for gcc 
+       on a pentium and the assembler is a %50 speedup.
+       MIPS CPU's, sparc and Alpha are the main CPU's with speedups.
+       Run des_opts to work out which options should be used.
+       DES_RISC1/DES_RISC2 use alternative inner loops which use
+       more registers but should give speedups on any CPU that does
+       dual issue (pentium).  DES_UNROLL unrolls the inner loop,
+       which costs in code size.
+
+Version 3.26
+       I've finally removed one of the shifts in D_ENCRYPT.  This
+       meant I've changed the des_SPtrans table (spr.h), the set_key()
+       function and some things in des_enc.c.  This has definitly
+       made things faster :-).  I've known about this one for some
+       time but I've been too lazy to follow it up :-).
+       Noticed that in the D_ENCRYPT() macro, we can just do L^=(..)^(..)^..
+       instead of L^=((..)|(..)|(..)..  This should save a register at
+       least.
+       Assember for x86.  The file to replace is des_enc.c, which is replaced
+       by one of the assembler files found in asm.  Look at des/asm/readme
+       for more info.
+
+       /* Modification to fcrypt so it can be compiled to support
+       HPUX 10.x's long password format, define -DLONGCRYPT to use this.
+       Thanks to Jens Kupferschmidt <bt1cu@hpboot.rz.uni-leipzig.de>. */
+
+       SIGWINCH case put in des_read_passwd() so the function does not
+       'exit' if this function is recieved.
+
+Version 3.25 17/07/96
+       Modified read_pwd.c so that stdin can be read if not a tty.
+       Thanks to Jeff Barber <jeffb@issl.atl.hp.com> for the patches.
+       des_init_random_number_generator() shortened due to VMS linker
+       limits.
+       Added RSA's DESX cbc mode.  It is a form of cbc encryption, with 2
+       8 byte quantites xored before and after encryption.
+       des_xcbc_encryption() - the name is funny to preserve the des_
+       prefix on all functions.
+
+Version 3.24 20/04/96
+       The DES_PTR macro option checked and used by SSLeay configuration
+
+Version 3.23 11/04/96
+       Added DES_LONG.  If defined to 'unsigned int' on the DEC Alpha,
+       it gives a %20 speedup :-)
+       Fixed the problem with des.pl under perl5.  The patches were
+       sent by Ed Kubaitis (ejk@uiuc.edu).
+       if fcrypt.c, changed values to handle illegal salt values the way
+       normal crypt() implementations do.  Some programs apparently use
+       them :-(. The patch was sent by Bjorn Gronvall <bg@sics.se>
+
+Version 3.22 29/11/95
+       Bug in des(1), an error with the uuencoding stuff when the
+       'data' is small, thanks to Geoff Keating <keagchon@mehta.anu.edu.au>
+       for the patch.
+
+Version 3.21 22/11/95
+       After some emailing back and forth with 
+       Colin Plumb <colin@nyx10.cs.du.edu>, I've tweaked a few things
+       and in a future version I will probably put in some of the
+       optimisation he suggested for use with the DES_USE_PTR option.
+       Extra routines from Mark Murray <mark@grondar.za> for use in
+       freeBSD.  They mostly involve random number generation for use
+       with kerberos.  They involve evil machine specific system calls
+       etc so I would normally suggest pushing this stuff into the
+       application and/or using RAND_seed()/RAND_bytes() if you are
+       using this DES library as part of SSLeay.
+       Redone the read_pw() function so that it is cleaner and
+       supports termios, thanks to Sameer Parekh <sameer@c2.org>
+       for the initial patches for this.
+       Renamed 3ecb_encrypt() to ecb3_encrypt().  This has been
+        done just to make things more consistent.
+       I have also now added triple DES versions of cfb and ofb.
+
+Version 3.20
+       Damn, Damn, Damn, as pointed out by Mike_Spreitzer.PARC@xerox.com,
+       my des_random_seed() function was only copying 4 bytes of the
+       passed seed into the init structure.  It is now fixed to copy 8.
+       My own suggestion is to used something like MD5 :-)
+
+Version 3.19 
+       While looking at my code one day, I though, why do I keep on
+       calling des_encrypt(in,out,ks,enc) when every function that
+       calls it has in and out the same.  So I dropped the 'out'
+       parameter, people should not be using this function.
+
+Version 3.18 30/08/95
+       Fixed a few bit with the distribution and the filenames.
+       3.17 had been munged via a move to DOS and back again.
+       NO CODE CHANGES
+
+Version 3.17 14/07/95
+       Fixed ede3 cbc which I had broken in 3.16.  I have also
+       removed some unneeded variables in 7-8 of the routines.
+
+Version 3.16 26/06/95
+       Added des_encrypt2() which does not use IP/FP, used by triple
+       des routines.  Tweaked things a bit elsewhere. %13 speedup on
+       sparc and %6 on a R4400 for ede3 cbc mode.
+
+Version 3.15 06/06/95
+       Added des_ncbc_encrypt(), it is des_cbc mode except that it is
+       'normal' and copies the new iv value back over the top of the
+       passed parameter.
+       CHANGED des_ede3_cbc_encrypt() so that it too now overwrites
+       the iv.  THIS WILL BREAK EXISTING CODE, but since this function
+       only new, I feel I can change it, not so with des_cbc_encrypt :-(.
+       I need to update the documentation.
+
+Version 3.14 31/05/95
+       New release upon the world, as part of my SSL implementation.
+       New copyright and usage stuff.  Basically free for all to use
+       as long as you say it came from me :-)
+
+Version 3.13 31/05/95
+       A fix in speed.c, if HZ is not defined, I set it to 100.0
+       which is reasonable for most unixes except SunOS 4.x.
+       I now have a #ifdef sun but timing for SunOS 4.x looked very
+       good :-(.  At my last job where I used SunOS 4.x, it was
+       defined to be 60.0 (look at the old INSTALL documentation), at
+       the last release had it changed to 100.0 since I now work with
+       Solaris2 and SVR4 boxes.
+       Thanks to  Rory Chisholm <rchishol@math.ethz.ch> for pointing this
+       one out.
+
+Version 3.12 08/05/95
+       As pointed out by The Crypt Keeper <tck@bend.UCSD.EDU>,
+       my D_ENCRYPT macro in crypt() had an un-necessary variable.
+       It has been removed.
+
+Version 3.11 03/05/95
+       Added des_ede3_cbc_encrypt() which is cbc mode des with 3 keys
+       and one iv.  It is a standard and I needed it for my SSL code.
+       It makes more sense to use this for triple DES than
+       3cbc_encrypt().  I have also added (or should I say tested :-)
+       cfb64_encrypt() which is cfb64 but it will encrypt a partial
+       number of bytes - 3 bytes in 3 bytes out.  Again this is for
+       my SSL library, as a form of encryption to use with SSL
+       telnet.
+
+Version 3.10 22/03/95
+       Fixed a bug in 3cbc_encrypt() :-(.  When making repeated calls
+       to cbc3_encrypt, the 2 iv values that were being returned to
+       be used in the next call were reversed :-(.
+       Many thanks to Bill Wade <wade@Stoner.COM> for pointing out
+       this error.
+
+Version 3.09 01/02/95
+       Fixed des_random_key to far more random, it was rather feeble
+       with regards to picking the initial seed.  The problem was
+       pointed out by Olaf Kirch <okir@monad.swb.de>.
+
+Version 3.08 14/12/94
+       Added Makefile.PL so libdes can be built into perl5.
+       Changed des_locl.h so RAND is always defined.
+
+Version 3.07 05/12/94
+       Added GNUmake and stuff so the library can be build with
+       glibc.
+
+Version 3.06 30/08/94
+       Added rpc_enc.c which contains _des_crypt.  This is for use in
+       secure_rpc v 4.0
+       Finally fixed the cfb_enc problems.
+       Fixed a few parameter parsing bugs in des (-3 and -b), thanks
+       to Rob McMillan <R.McMillan@its.gu.edu.au>
+
+Version 3.05 21/04/94
+       for unsigned long l; gcc does not produce ((l>>34) == 0)
+       This causes bugs in cfb_enc.
+       Thanks to Hadmut Danisch <danisch@ira.uka.de>
+
+Version 3.04 20/04/94
+       Added a version number to des.c and libdes.a
+
+Version 3.03 12/01/94
+       Fixed a bug in non zero iv in 3cbc_enc.
+
+Version 3.02 29/10/93
+       I now work in a place where there are 6+ architectures and 14+
+       OS versions :-).
+       Fixed TERMIO definition so the most sys V boxes will work :-)
+
+Release upon comp.sources.misc
+Version 3.01 08/10/93
+       Added des_3cbc_encrypt()
+
+Version 3.00 07/10/93
+       Fixed up documentation.
+       quad_cksum definitely compatible with MIT's now.
+
+Version 2.30 24/08/93
+       Triple DES now defaults to triple cbc but can do triple ecb
+        with the -b flag.
+       Fixed some MSDOS uuen/uudecoding problems, thanks to
+       Added prototypes.
+       
+Version 2.22 29/06/93
+       Fixed a bug in des_is_weak_key() which stopped it working :-(
+       thanks to engineering@MorningStar.Com.
+
+Version 2.21 03/06/93
+       des(1) with no arguments gives quite a bit of help.
+       Added -c (generate ckecksum) flag to des(1).
+       Added -3 (triple DES) flag to des(1).
+       Added cfb and ofb routines to the library.
+
+Version 2.20 11/03/93
+       Added -u (uuencode) flag to des(1).
+       I have been playing with byte order in quad_cksum to make it
+        compatible with MIT's version.  All I can say is avid this
+        function if possible since MIT's output is endian dependent.
+
+Version 2.12 14/10/92
+       Added MSDOS specific macro in ecb_encrypt which gives a %70
+        speed up when the code is compiled with turbo C.
+
+Version 2.11 12/10/92
+       Speedup in set_key (recoding of PC-1)
+        I now do it in 47 simple operations, down from 60.
+        Thanks to John Fletcher (john_fletcher@lccmail.ocf.llnl.gov)
+        for motivating me to look for a faster system :-)
+        The speedup is probably less that 1% but it is still 13
+        instructions less :-).
+
+Version 2.10 06/10/92
+       The code now works on the 64bit ETA10 and CRAY without modifications or
+        #defines.  I believe the code should work on any machine that
+        defines long, int or short to be 8 bytes long.
+       Thanks to Shabbir J. Safdar (shabby@mentor.cc.purdue.edu)
+        for helping me fix the code to run on 64bit machines (he had
+        access to an ETA10).
+       Thanks also to John Fletcher <john_fletcher@lccmail.ocf.llnl.gov>
+        for testing the routines on a CRAY.
+       read_password.c has been renamed to read_passwd.c
+       string_to_key.c has been renamed to string2key.c
+
+Version 2.00 14/09/92
+       Made mods so that the library should work on 64bit CPU's.
+       Removed all my uchar and ulong defs.  To many different
+        versions of unix define them in their header files in too many
+        different combinations :-)
+       IRIX - Sillicon Graphics mods (mostly in read_password.c).
+        Thanks to Andrew Daviel (advax@erich.triumf.ca)
+
+Version 1.99 26/08/92
+       Fixed a bug or 2 in enc_read.c
+       Fixed a bug in enc_write.c
+       Fixed a pseudo bug in fcrypt.c (very obscure).
+
+Version 1.98 31/07/92
+       Support for the ETA10.  This is a strange machine that defines
+       longs and ints as 8 bytes and shorts as 4 bytes.
+       Since I do evil things with long * that assume that they are 4
+       bytes.  Look in the Makefile for the option to compile for
+       this machine.  quad_cksum appears to have problems but I
+       will don't have the time to fix it right now, and this is not
+       a function that uses DES and so will not effect the main uses
+       of the library.
+
+Version 1.97 20/05/92 eay
+       Fixed the Imakefile and made some changes to des.h to fix some
+       problems when building this package with Kerberos v 4.
+
+Version 1.96 18/05/92 eay
+       Fixed a small bug in string_to_key() where problems could
+       occur if des_check_key was set to true and the string
+       generated a weak key.
+
+Patch2 posted to comp.sources.misc
+Version 1.95 13/05/92 eay
+       Added an alternative version of the D_ENCRYPT macro in
+       ecb_encrypt and fcrypt.  Depending on the compiler, one version or the
+       other will be faster.  This was inspired by 
+       Dana How <how@isl.stanford.edu>, and her pointers about doing the
+       *(ulong *)((uchar *)ptr+(value&0xfc))
+       vs
+       ptr[value&0x3f]
+       to stop the C compiler doing a <<2 to convert the long array index.
+
+Version 1.94 05/05/92 eay
+       Fixed an incompatibility between my string_to_key and the MIT
+        version.  When the key is longer than 8 chars, I was wrapping
+        with a different method.  To use the old version, define
+        OLD_STR_TO_KEY in the makefile.  Thanks to
+        viktor@newsu.shearson.com (Viktor Dukhovni).
+
+Version 1.93 28/04/92 eay
+       Fixed the VMS mods so that echo is now turned off in
+        read_password.  Thanks again to brennan@coco.cchs.su.oz.AU.
+       MSDOS support added.  The routines can be compiled with
+        Turbo C (v2.0) and MSC (v5.1).  Make sure MSDOS is defined.
+
+Patch1 posted to comp.sources.misc
+Version 1.92 13/04/92 eay
+       Changed D_ENCRYPT so that the rotation of R occurs outside of
+        the loop.  This required rotating all the longs in sp.h (now
+        called spr.h). Thanks to Richard Outerbridge <71755.204@CompuServe.COM>
+       speed.c has been changed so it will work without SIGALRM.  If
+        times(3) is not present it will try to use ftime() instead.
+
+Version 1.91 08/04/92 eay
+       Added -E/-D options to des(1) so it can use string_to_key.
+       Added SVR4 mods suggested by witr@rwwa.COM
+       Added VMS mods suggested by brennan@coco.cchs.su.oz.AU.  If
+       anyone knows how to turn of tty echo in VMS please tell me or
+       implement it yourself :-).
+       Changed FILE *IN/*OUT to *DES_IN/*DES_OUT since it appears VMS
+       does not like IN/OUT being used.
+
+Libdes posted to comp.sources.misc
+Version 1.9 24/03/92 eay
+       Now contains a fast small crypt replacement.
+       Added des(1) command.
+       Added des_rw_mode so people can use cbc encryption with
+       enc_read and enc_write.
+
+Version 1.8 15/10/91 eay
+       Bug in cbc_cksum.
+       Many thanks to Keith Reynolds (keithr@sco.COM) for pointing this
+       one out.
+
+Version 1.7 24/09/91 eay
+       Fixed set_key :-)
+       set_key is 4 times faster and takes less space.
+       There are a few minor changes that could be made.
+
+Version 1.6 19/09/1991 eay
+       Finally go IP and FP finished.
+       Now I need to fix set_key.
+       This version is quite a bit faster that 1.51
+
+Version 1.52 15/06/1991 eay
+       20% speedup in ecb_encrypt by changing the E bit selection
+       to use 2 32bit words.  This also required modification of the
+       sp table.  There is still a way to speedup the IP and IP-1
+       (hints from outer@sq.com) still working on this one :-(.
+
+Version 1.51 07/06/1991 eay
+       Faster des_encrypt by loop unrolling
+       Fixed bug in quad_cksum.c (thanks to hughes@logos.ucs.indiana.edu)
+
+Version 1.50 28/05/1991 eay
+       Optimised the code a bit more for the sparc.  I have improved the
+       speed of the inner des_encrypt by speeding up the initial and
+       final permutations.
+
+Version 1.40 23/10/1990 eay
+       Fixed des_random_key, it did not produce a random key :-(
+
+Version 1.30  2/10/1990 eay
+       Have made des_quad_cksum the same as MIT's, the full package
+       should be compatible with MIT's
+       Have tested on a DECstation 3100
+       Still need to fix des_set_key (make it faster).
+       Does des_cbc_encrypts at 70.5k/sec on a 3100.
+
+Version 1.20 18/09/1990 eay
+       Fixed byte order dependencies.
+       Fixed (I hope) all the word alignment problems.
+       Speedup in des_ecb_encrypt.
+
+Version 1.10 11/09/1990 eay
+       Added des_enc_read and des_enc_write.
+       Still need to fix des_quad_cksum.
+       Still need to document des_enc_read and des_enc_write.
+
+Version 1.00 27/08/1990 eay
+
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/des/asm/des-586.pl     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,251 @@
+#!/usr/local/bin/perl
+#
+# The inner loop instruction sequence and the IP/FP modifications are from
+# Svend Olaf Mikkelsen <svolaf@inet.uni-c.dk>
+#
+
+push(@INC,"perlasm","../../perlasm");
+require "x86asm.pl";
+require "cbc.pl";
+require "desboth.pl";
+
+# base code is in microsft
+# op dest, source
+# format.
+#
+
+&asm_init($ARGV[0],"des-586.pl");
+
+$L="edi";
+$R="esi";
+
+&external_label("des_SPtrans");
+&des_encrypt("des_encrypt",1);
+&des_encrypt("des_encrypt2",0);
+&des_encrypt3("des_encrypt3",1);
+&des_encrypt3("des_decrypt3",0);
+&cbc("des_ncbc_encrypt","des_encrypt","des_encrypt",0,4,5,3,5,-1);
+&cbc("des_ede3_cbc_encrypt","des_encrypt3","des_decrypt3",0,6,7,3,4,5);
+
+&asm_finish();
+
+sub des_encrypt
+       {
+       local($name,$do_ip)=@_;
+
+       &function_begin_B($name,"EXTRN   _des_SPtrans:DWORD");
+
+       &push("esi");
+       &push("edi");
+
+       &comment("");
+       &comment("Load the 2 words");
+       $ks="ebp";
+
+       if ($do_ip)
+               {
+               &mov($R,&wparam(0));
+                &xor(  "ecx",          "ecx"           );
+
+               &push("ebx");
+               &push("ebp");
+
+               &mov("eax",&DWP(0,$R,"",0));
+                &mov("ebx",&wparam(2));        # get encrypt flag
+               &mov($L,&DWP(4,$R,"",0));
+               &comment("");
+               &comment("IP");
+               &IP_new("eax",$L,$R,3);
+               }
+       else
+               {
+               &mov("eax",&wparam(0));
+                &xor(  "ecx",          "ecx"           );
+
+               &push("ebx");
+               &push("ebp");
+
+               &mov($R,&DWP(0,"eax","",0));
+                &mov("ebx",&wparam(2));        # get encrypt flag
+               &rotl($R,3);
+               &mov($L,&DWP(4,"eax","",0));
+               &rotl($L,3);
+               }
+
+       &mov(   $ks,            &wparam(1)      );
+       &cmp("ebx","0");
+       &je(&label("start_decrypt"));
+
+       for ($i=0; $i<16; $i+=2)
+               {
+               &comment("");
+               &comment("Round $i");
+               &D_ENCRYPT($i,$L,$R,$i*2,$ks,"des_SPtrans","eax","ebx","ecx","edx");
+
+               &comment("");
+               &comment("Round ".sprintf("%d",$i+1));
+               &D_ENCRYPT($i+1,$R,$L,($i+1)*2,$ks,"des_SPtrans","eax","ebx","ecx","edx");
+               }
+       &jmp(&label("end"));
+
+       &set_label("start_decrypt");
+
+       for ($i=15; $i>0; $i-=2)
+               {
+               &comment("");
+               &comment("Round $i");
+               &D_ENCRYPT(15-$i,$L,$R,$i*2,$ks,"des_SPtrans","eax","ebx","ecx","edx");
+               &comment("");
+               &comment("Round ".sprintf("%d",$i-1));
+               &D_ENCRYPT(15-$i+1,$R,$L,($i-1)*2,$ks,"des_SPtrans","eax","ebx","ecx","edx");
+               }
+
+       &set_label("end");
+
+       if ($do_ip)
+               {
+               &comment("");
+               &comment("FP");
+               &mov("edx",&wparam(0));
+               &FP_new($L,$R,"eax",3);
+
+               &mov(&DWP(0,"edx","",0),"eax");
+               &mov(&DWP(4,"edx","",0),$R);
+               }
+       else
+               {
+               &comment("");
+               &comment("Fixup");
+               &rotr($L,3);            # r
+                &mov("eax",&wparam(0));
+               &rotr($R,3);            # l
+                &mov(&DWP(0,"eax","",0),$L);
+                &mov(&DWP(4,"eax","",0),$R);
+               }
+
+       &pop("ebp");
+       &pop("ebx");
+       &pop("edi");
+       &pop("esi");
+       &ret();
+
+       &function_end_B($name);
+       }
+
+sub D_ENCRYPT
+       {
+       local($r,$L,$R,$S,$ks,$desSP,$u,$tmp1,$tmp2,$t)=@_;
+
+        &mov(  $u,             &DWP(&n2a($S*4),$ks,"",0));
+       &xor(   $tmp1,          $tmp1);
+        &mov(  $t,             &DWP(&n2a(($S+1)*4),$ks,"",0));
+       &xor(   $u,             $R);
+        &xor(  $t,             $R);
+       &and(   $u,             "0xfcfcfcfc"    );
+        &and(  $t,             "0xcfcfcfcf"    );
+       &movb(  &LB($tmp1),     &LB($u) );
+        &movb( &LB($tmp2),     &HB($u) );
+       &rotr(  $t,             4               );
+       &mov(   $ks,            &DWP("      $desSP",$tmp1,"",0));
+        &movb( &LB($tmp1),     &LB($t) );
+       &xor(   $L,             $ks);
+        &mov(  $ks,            &DWP("0x200+$desSP",$tmp2,"",0));
+       &xor(   $L,             $ks); ######
+        &movb( &LB($tmp2),     &HB($t) );
+       &shr(   $u,             16);
+        &mov(  $ks,            &DWP("0x100+$desSP",$tmp1,"",0));
+       &xor(   $L,             $ks); ######
+        &movb( &LB($tmp1),     &HB($u) );
+       &shr(   $t,             16);
+        &mov(  $ks,            &DWP("0x300+$desSP",$tmp2,"",0));
+       &xor(   $L,             $ks);
+        &mov(  $ks,            &wparam(1)      );
+       &movb(  &LB($tmp2),     &HB($t) );
+        &and(  $u,             "0xff"  );
+       &and(   $t,             "0xff"  );
+        &mov(  $tmp1,          &DWP("0x600+$desSP",$tmp1,"",0));
+       &xor(   $L,             $tmp1);
+        &mov(  $tmp1,          &DWP("0x700+$desSP",$tmp2,"",0));
+       &xor(   $L,             $tmp1);
+        &mov(  $tmp1,          &DWP("0x400+$desSP",$u,"",0));
+       &xor(   $L,             $tmp1);
+        &mov(  $tmp1,          &DWP("0x500+$desSP",$t,"",0));
+       &xor(   $L,             $tmp1);
+       }
+
+sub n2a
+       {
+       sprintf("%d",$_[0]);
+       }
+
+# now has a side affect of rotating $a by $shift
+sub R_PERM_OP
+       {
+       local($a,$b,$tt,$shift,$mask,$last)=@_;
+
+       &rotl(  $a,             $shift          ) if ($shift != 0);
+       &mov(   $tt,            $a              );
+       &xor(   $a,             $b              );
+       &and(   $a,             $mask           );
+       if (!$last eq $b)
+               {
+               &xor(   $b,             $a              );
+               &xor(   $tt,            $a              );
+               }
+       else
+               {
+               &xor(   $tt,            $a              );
+               &xor(   $b,             $a              );
+               }
+       &comment("");
+       }
+
+sub IP_new
+       {
+       local($l,$r,$tt,$lr)=@_;
+
+       &R_PERM_OP($l,$r,$tt, 4,"0xf0f0f0f0",$l);
+       &R_PERM_OP($r,$tt,$l,20,"0xfff0000f",$l);
+       &R_PERM_OP($l,$tt,$r,14,"0x33333333",$r);
+       &R_PERM_OP($tt,$r,$l,22,"0x03fc03fc",$r);
+       &R_PERM_OP($l,$r,$tt, 9,"0xaaaaaaaa",$r);
+       
+       if ($lr != 3)
+               {
+               if (($lr-3) < 0)
+                       { &rotr($tt,    3-$lr); }
+               else    { &rotl($tt,    $lr-3); }
+               }
+       if ($lr != 2)
+               {
+               if (($lr-2) < 0)
+                       { &rotr($r,     2-$lr); }
+               else    { &rotl($r,     $lr-2); }
+               }
+       }
+
+sub FP_new
+       {
+       local($l,$r,$tt,$lr)=@_;
+
+       if ($lr != 2)
+               {
+               if (($lr-2) < 0)
+                       { &rotl($r,     2-$lr); }
+               else    { &rotr($r,     $lr-2); }
+               }
+       if ($lr != 3)
+               {
+               if (($lr-3) < 0)
+                       { &rotl($l,     3-$lr); }
+               else    { &rotr($l,     $lr-3); }
+               }
+
+       &R_PERM_OP($l,$r,$tt, 0,"0xaaaaaaaa",$r);
+       &R_PERM_OP($tt,$r,$l,23,"0x03fc03fc",$r);
+       &R_PERM_OP($l,$r,$tt,10,"0x33333333",$l);
+       &R_PERM_OP($r,$tt,$l,18,"0xfff0000f",$l);
+       &R_PERM_OP($l,$tt,$r,12,"0xf0f0f0f0",$r);
+       &rotr($tt       , 4);
+       }
+
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/des/asm/des686.pl     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,230 @@
+#!/usr/local/bin/perl
+
+$prog="des686.pl";
+
+# base code is in microsft
+# op dest, source
+# format.
+#
+
+# WILL NOT WORK ANYMORE WITH desboth.pl
+require "desboth.pl";
+
+if (   ($ARGV[0] eq "elf"))
+       { require "x86unix.pl"; }
+elsif (        ($ARGV[0] eq "a.out"))
+       { $aout=1; require "x86unix.pl"; }
+elsif (        ($ARGV[0] eq "sol"))
+       { $sol=1; require "x86unix.pl"; }
+elsif ( ($ARGV[0] eq "cpp"))
+       { $cpp=1; require "x86unix.pl"; }
+elsif (        ($ARGV[0] eq "win32"))
+       { require "x86ms.pl"; }
+else
+       {
+       print STDERR <<"EOF";
+Pick one target type from
+       elf     - linux, FreeBSD etc
+       a.out   - old linux
+       sol     - x86 solaris
+       cpp     - format so x86unix.cpp can be used
+       win32   - Windows 95/Windows NT
+EOF
+       exit(1);
+       }
+
+&comment("Don't even think of reading this code");
+&comment("It was automatically generated by $prog");
+&comment("Which is a perl program used to generate the x86 assember for");
+&comment("any of elf, a.out, Win32, or Solaris");
+&comment("It can be found in SSLeay 0.6.5+ or in libdes 3.26+");
+&comment("eric <eay\@cryptsoft.com>");
+&comment("");
+
+&file("dx86xxxx");
+
+$L="edi";
+$R="esi";
+
+&des_encrypt("des_encrypt",1);
+&des_encrypt("des_encrypt2",0);
+
+&des_encrypt3("des_encrypt3",1);
+&des_encrypt3("des_decrypt3",0);
+
+&file_end();
+
+sub des_encrypt
+       {
+       local($name,$do_ip)=@_;
+
+       &function_begin($name,"EXTRN   _des_SPtrans:DWORD");
+
+       &comment("");
+       &comment("Load the 2 words");
+       &mov("eax",&wparam(0));
+       &mov($L,&DWP(0,"eax","",0));
+       &mov($R,&DWP(4,"eax","",0));
+
+       $ksp=&wparam(1);
+
+       if ($do_ip)
+               {
+               &comment("");
+               &comment("IP");
+               &IP_new($L,$R,"eax");
+               }
+
+       &comment("");
+       &comment("fixup rotate");
+       &rotl($R,3);
+       &rotl($L,3);
+       &exch($L,$R);
+
+       &comment("");
+       &comment("load counter, key_schedule and enc flag");
+       &mov("eax",&wparam(2)); # get encrypt flag
+       &mov("ebp",&wparam(1)); # get ks
+       &cmp("eax","0");
+       &je(&label("start_decrypt"));
+
+       # encrypting part
+
+       for ($i=0; $i<16; $i+=2)
+               {
+               &comment("");
+               &comment("Round $i");
+               &D_ENCRYPT($L,$R,$i*2,"ebp","des_SPtrans","ecx","edx","eax","ebx");
+
+               &comment("");
+               &comment("Round ".sprintf("%d",$i+1));
+               &D_ENCRYPT($R,$L,($i+1)*2,"ebp","des_SPtrans","ecx","edx","eax","ebx");
+               }
+       &jmp(&label("end"));
+
+       &set_label("start_decrypt");
+
+       for ($i=15; $i>0; $i-=2)
+               {
+               &comment("");
+               &comment("Round $i");
+               &D_ENCRYPT($L,$R,$i*2,"ebp","des_SPtrans","ecx","edx","eax","ebx");
+               &comment("");
+               &comment("Round ".sprintf("%d",$i-1));
+               &D_ENCRYPT($R,$L,($i-1)*2,"ebp","des_SPtrans","ecx","edx","eax","ebx");
+               }
+
+       &set_label("end");
+
+       &comment("");
+       &comment("Fixup");
+       &rotr($L,3);            # r
+       &rotr($R,3);            # l
+
+       if ($do_ip)
+               {
+               &comment("");
+               &comment("FP");
+               &FP_new($R,$L,"eax");
+               }
+
+       &mov("eax",&wparam(0));
+       &mov(&DWP(0,"eax","",0),$L);
+       &mov(&DWP(4,"eax","",0),$R);
+
+       &function_end($name);
+       }
+
+
+# The logic is to load R into 2 registers and operate on both at the same time.
+# We also load the 2 R's into 2 more registers so we can do the 'move word down a byte'
+# while also masking the other copy and doing a lookup.  We then also accumulate the
+# L value in 2 registers then combine them at the end.
+sub D_ENCRYPT
+       {
+       local($L,$R,$S,$ks,$desSP,$u,$t,$tmp1,$tmp2,$tmp3)=@_;
+
+       &mov(   $u,             &DWP(&n2a($S*4),$ks,"",0));
+       &mov(   $t,             &DWP(&n2a(($S+1)*4),$ks,"",0));
+       &xor(   $u,             $R              );
+       &xor(   $t,             $R              );
+       &rotr(  $t,             4               );
+
+       # the numbers at the end of the line are origional instruction order
+       &mov(   $tmp2,          $u              );                      # 1 2
+       &mov(   $tmp1,          $t              );                      # 1 1
+       &and(   $tmp2,          "0xfc"          );                      # 1 4
+       &and(   $tmp1,          "0xfc"          );                      # 1 3
+       &shr(   $t,             8               );                      # 1 5
+       &xor(   $L,             &DWP("0x100+$desSP",$tmp1,"",0));       # 1 7
+       &shr(   $u,             8               );                      # 1 6
+       &mov(   $tmp1,          &DWP("      $desSP",$tmp2,"",0));       # 1 8
+
+       &mov(   $tmp2,          $u              );                      # 2 2
+       &xor(   $L,             $tmp1           );                      # 1 9
+       &and(   $tmp2,          "0xfc"          );                      # 2 4
+       &mov(   $tmp1,          $t              );                      # 2 1
+       &and(   $tmp1,          "0xfc"          );                      # 2 3
+       &shr(   $t,             8               );                      # 2 5
+       &xor(   $L,             &DWP("0x300+$desSP",$tmp1,"",0));       # 2 7
+       &shr(   $u,             8               );                      # 2 6
+       &mov(   $tmp1,          &DWP("0x200+$desSP",$tmp2,"",0));       # 2 8
+       &mov(   $tmp2,          $u              );                      # 3 2
+
+       &xor(   $L,             $tmp1           );                      # 2 9
+       &and(   $tmp2,          "0xfc"          );                      # 3 4
+
+       &mov(   $tmp1,          $t              );                      # 3 1 
+       &shr(   $u,             8               );                      # 3 6
+       &and(   $tmp1,          "0xfc"          );                      # 3 3
+       &shr(   $t,             8               );                      # 3 5
+       &xor(   $L,             &DWP("0x500+$desSP",$tmp1,"",0));       # 3 7
+       &mov(   $tmp1,          &DWP("0x400+$desSP",$tmp2,"",0));       # 3 8
+
+       &and(   $t,             "0xfc"          );                      # 4 1
+       &xor(   $L,             $tmp1           );                      # 3 9
+
+       &and(   $u,             "0xfc"          );                      # 4 2
+       &xor(   $L,             &DWP("0x700+$desSP",$t,"",0));          # 4 3
+       &xor(   $L,             &DWP("0x600+$desSP",$u,"",0));          # 4 4
+       }
+
+sub PERM_OP
+       {
+       local($a,$b,$tt,$shift,$mask)=@_;
+
+       &mov(   $tt,            $a              );
+       &shr(   $tt,            $shift          );
+       &xor(   $tt,            $b              );
+       &and(   $tt,            $mask           );
+       &xor(   $b,             $tt             );
+       &shl(   $tt,            $shift          );
+       &xor(   $a,             $tt             );
+       }
+
+sub IP_new
+       {
+       local($l,$r,$tt)=@_;
+
+       &PERM_OP($r,$l,$tt, 4,"0x0f0f0f0f");
+       &PERM_OP($l,$r,$tt,16,"0x0000ffff");
+       &PERM_OP($r,$l,$tt, 2,"0x33333333");
+       &PERM_OP($l,$r,$tt, 8,"0x00ff00ff");
+       &PERM_OP($r,$l,$tt, 1,"0x55555555");
+       }
+
+sub FP_new
+       {
+       local($l,$r,$tt)=@_;
+
+       &PERM_OP($l,$r,$tt, 1,"0x55555555");
+        &PERM_OP($r,$l,$tt, 8,"0x00ff00ff");
+        &PERM_OP($l,$r,$tt, 2,"0x33333333");
+        &PERM_OP($r,$l,$tt,16,"0x0000ffff");
+        &PERM_OP($l,$r,$tt, 4,"0x0f0f0f0f");
+       }
+
+sub n2a
+       {
+       sprintf("%d",$_[0]);
+       }
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/des/asm/desboth.pl     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,79 @@
+#!/usr/local/bin/perl
+
+$L="edi";
+$R="esi";
+
+sub des_encrypt3
+       {
+       local($name,$enc)=@_;
+
+       &function_begin_B($name,"");
+       &push("ebx");
+       &mov("ebx",&wparam(0));
+
+       &push("ebp");
+       &push("esi");
+
+       &push("edi");
+
+       &comment("");
+       &comment("Load the data words");
+       &mov($L,&DWP(0,"ebx","",0));
+       &mov($R,&DWP(4,"ebx","",0));
+       &stack_push(3);
+
+       &comment("");
+       &comment("IP");
+       &IP_new($L,$R,"edx",0);
+
+       # put them back
+       
+       if ($enc)
+               {
+               &mov(&DWP(4,"ebx","",0),$R);
+                &mov("eax",&wparam(1));
+               &mov(&DWP(0,"ebx","",0),"edx");
+                &mov("edi",&wparam(2));
+                &mov("esi",&wparam(3));
+               }
+       else
+               {
+               &mov(&DWP(4,"ebx","",0),$R);
+                &mov("esi",&wparam(1));
+               &mov(&DWP(0,"ebx","",0),"edx");
+                &mov("edi",&wparam(2));
+                &mov("eax",&wparam(3));
+               }
+       &mov(&swtmp(2), (($enc)?"1":"0"));
+       &mov(&swtmp(1), "eax");
+       &mov(&swtmp(0), "ebx");
+       &call("des_encrypt2");
+       &mov(&swtmp(2), (($enc)?"0":"1"));
+       &mov(&swtmp(1), "edi");
+       &mov(&swtmp(0), "ebx");
+       &call("des_encrypt2");
+       &mov(&swtmp(2), (($enc)?"1":"0"));
+       &mov(&swtmp(1), "esi");
+       &mov(&swtmp(0), "ebx");
+       &call("des_encrypt2");
+
+       &stack_pop(3);
+       &mov($L,&DWP(0,"ebx","",0));
+       &mov($R,&DWP(4,"ebx","",0));
+
+       &comment("");
+       &comment("FP");
+       &FP_new($L,$R,"eax",0);
+
+       &mov(&DWP(0,"ebx","",0),"eax");
+       &mov(&DWP(4,"ebx","",0),$R);
+
+       &pop("edi");
+       &pop("esi");
+       &pop("ebp");
+       &pop("ebx");
+       &ret();
+       &function_end_B($name);
+       }
+
+
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/des/asm/readme     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,131 @@
+First up, let me say I don't like writing in assembler.  It is not portable,
+dependant on the particular CPU architecture release and is generally a pig
+to debug and get right.  Having said that, the x86 architecture is probably
+the most important for speed due to number of boxes and since
+it appears to be the worst architecture to to get
+good C compilers for.  So due to this, I have lowered myself to do
+assembler for the inner DES routines in libdes :-).
+
+The file to implement in assembler is des_enc.c.  Replace the following
+4 functions
+des_encrypt(DES_LONG data[2],des_key_schedule ks, int encrypt);
+des_encrypt2(DES_LONG data[2],des_key_schedule ks, int encrypt);
+des_encrypt3(DES_LONG data[2],des_key_schedule ks1,ks2,ks3);
+des_decrypt3(DES_LONG data[2],des_key_schedule ks1,ks2,ks3);
+
+They encrypt/decrypt the 64 bits held in 'data' using
+the 'ks' key schedules.   The only difference between the 4 functions is that
+des_encrypt2() does not perform IP() or FP() on the data (this is an
+optimization for when doing triple DES and des_encrypt3() and des_decrypt3()
+perform triple des.  The triple DES routines are in here because it does
+make a big difference to have them located near the des_encrypt2 function
+at link time..
+
+Now as we all know, there are lots of different operating systems running on
+x86 boxes, and unfortunately they normally try to make sure their assembler
+formating is not the same as the other peoples.
+The 4 main formats I know of are
+Microsoft      Windows 95/Windows NT
+Elf            Includes Linux and FreeBSD(?).
+a.out          The older Linux.
+Solaris                Same as Elf but different comments :-(.
+
+Now I was not overly keen to write 4 different copies of the same code,
+so I wrote a few perl routines to output the correct assembler, given
+a target assembler type.  This code is ugly and is just a hack.
+The libraries are x86unix.pl and x86ms.pl.
+des586.pl, des686.pl and des-som[23].pl are the programs to actually
+generate the assembler.
+
+So to generate elf assembler
+perl des-som3.pl elf >dx86-elf.s
+For Windows 95/NT
+perl des-som2.pl win32 >win32.asm
+
+[ update 4 Jan 1996 ]
+I have added another way to do things.
+perl des-som3.pl cpp >dx86-cpp.s
+generates a file that will be included by dx86unix.cpp when it is compiled.
+To build for elf, a.out, solaris, bsdi etc,
+cc -E -DELF asm/dx86unix.cpp | as -o asm/dx86-elf.o
+cc -E -DSOL asm/dx86unix.cpp | as -o asm/dx86-sol.o
+cc -E -DOUT asm/dx86unix.cpp | as -o asm/dx86-out.o
+cc -E -DBSDI asm/dx86unix.cpp | as -o asm/dx86bsdi.o
+This was done to cut down the number of files in the distribution.
+
+Now the ugly part.  I acquired my copy of Intels
+"Optimization's For Intel's 32-Bit Processors" and found a few interesting
+things.  First, the aim of the exersize is to 'extract' one byte at a time
+from a word and do an array lookup.  This involves getting the byte from
+the 4 locations in the word and moving it to a new word and doing the lookup.
+The most obvious way to do this is
+xor    eax,    eax                             # clear word
+movb   al,     cl                              # get low byte
+xor    edi     DWORD PTR 0x100+des_SP[eax]     # xor in word
+movb   al,     ch                              # get next byte
+xor    edi     DWORD PTR 0x300+des_SP[eax]     # xor in word
+shr    ecx     16
+which seems ok.  For the pentium, this system appears to be the best.
+One has to do instruction interleaving to keep both functional units
+operating, but it is basically very efficient.
+
+Now the crunch.  When a full register is used after a partial write, eg.
+mov    al,     cl
+xor    edi,    DWORD PTR 0x100+des_SP[eax]
+386    - 1 cycle stall
+486    - 1 cycle stall
+586    - 0 cycle stall
+686    - at least 7 cycle stall (page 22 of the above mentioned document).
+
+So the technique that produces the best results on a pentium, according to
+the documentation, will produce hideous results on a pentium pro.
+
+To get around this, des686.pl will generate code that is not as fast on
+a pentium, should be very good on a pentium pro.
+mov    eax,    ecx                             # copy word 
+shr    ecx,    8                               # line up next byte
+and    eax,    0fch                            # mask byte
+xor    edi     DWORD PTR 0x100+des_SP[eax]     # xor in array lookup
+mov    eax,    ecx                             # get word
+shr    ecx     8                               # line up next byte
+and    eax,    0fch                            # mask byte
+xor    edi     DWORD PTR 0x300+des_SP[eax]     # xor in array lookup
+
+Due to the execution units in the pentium, this actually works quite well.
+For a pentium pro it should be very good.  This is the type of output
+Visual C++ generates.
+
+There is a third option.  instead of using
+mov    al,     ch
+which is bad on the pentium pro, one may be able to use
+movzx  eax,    ch
+which may not incur the partial write penalty.  On the pentium,
+this instruction takes 4 cycles so is not worth using but on the
+pentium pro it appears it may be worth while.  I need access to one to
+experiment :-).
+
+eric (20 Oct 1996)
+
+22 Nov 1996 - I have asked people to run the 2 different version on pentium
+pros and it appears that the intel documentation is wrong.  The
+mov al,bh is still faster on a pentium pro, so just use the des586.pl
+install des686.pl
+
+3 Dec 1996 - I added des_encrypt3/des_decrypt3 because I have moved these
+functions into des_enc.c because it does make a massive performance
+difference on some boxes to have the functions code located close to
+the des_encrypt2() function.
+
+9 Jan 1997 - des-som2.pl is now the correct perl script to use for
+pentiums.  It contains an inner loop from
+Svend Olaf Mikkelsen <svolaf@inet.uni-c.dk> which does raw ecb DES calls at
+273,000 per second.  He had a previous version at 250,000 and the best
+I was able to get was 203,000.  The content has not changed, this is all
+due to instruction sequencing (and actual instructions choice) which is able
+to keep both functional units of the pentium going.
+We may have lost the ugly register usage restrictions when x86 went 32 bit
+but for the pentium it has been replaced by evil instruction ordering tricks.
+
+13 Jan 1997 - des-som3.pl, more optimizations from Svend Olaf.
+raw DES at 281,000 per second on a pentium 100.
+
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/des/cbc_enc.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,135 @@
+/* crypto/des/cbc_enc.c */
+/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+#include "des/des_locl.h"
+
+void des_cbc_encrypt(input, output, length, schedule, ivec, enc)
+des_cblock (*input);
+des_cblock (*output);
+long length;
+des_key_schedule schedule;
+des_cblock (*ivec);
+int enc;
+       {
+       register DES_LONG tin0,tin1;
+       register DES_LONG tout0,tout1,xor0,xor1;
+       register unsigned char *in,*out;
+       register long l=length;
+       DES_LONG tin[2];
+       unsigned char *iv;
+
+       in=(unsigned char *)input;
+       out=(unsigned char *)output;
+       iv=(unsigned char *)ivec;
+
+       if (enc)
+               {
+               c2l(iv,tout0);
+               c2l(iv,tout1);
+               for (l-=8; l>=0; l-=8)
+                       {
+                       c2l(in,tin0);
+                       c2l(in,tin1);
+                       tin0^=tout0; tin[0]=tin0;
+                       tin1^=tout1; tin[1]=tin1;
+                       des_encrypt((DES_LONG *)tin,schedule,DES_ENCRYPT);
+                       tout0=tin[0]; l2c(tout0,out);
+                       tout1=tin[1]; l2c(tout1,out);
+                       }
+               if (l != -8)
+                       {
+                       c2ln(in,tin0,tin1,l+8);
+                       tin0^=tout0; tin[0]=tin0;
+                       tin1^=tout1; tin[1]=tin1;
+                       des_encrypt((DES_LONG *)tin,schedule,DES_ENCRYPT);
+                       tout0=tin[0]; l2c(tout0,out);
+                       tout1=tin[1]; l2c(tout1,out);
+                       }
+               }
+       else
+               {
+               c2l(iv,xor0);
+               c2l(iv,xor1);
+               for (l-=8; l>=0; l-=8)
+                       {
+                       c2l(in,tin0); tin[0]=tin0;
+                       c2l(in,tin1); tin[1]=tin1;
+                       des_encrypt((DES_LONG *)tin,schedule,DES_DECRYPT);
+                       tout0=tin[0]^xor0;
+                       tout1=tin[1]^xor1;
+                       l2c(tout0,out);
+                       l2c(tout1,out);
+                       xor0=tin0;
+                       xor1=tin1;
+                       }
+               if (l != -8)
+                       {
+                       c2l(in,tin0); tin[0]=tin0;
+                       c2l(in,tin1); tin[1]=tin1;
+                       des_encrypt((DES_LONG *)tin,schedule,DES_DECRYPT);
+                       tout0=tin[0]^xor0;
+                       tout1=tin[1]^xor1;
+                       l2cn(tout0,tout1,out,l+8);
+               /*      xor0=tin0;
+                       xor1=tin1; */
+                       }
+               }
+       tin0=tin1=tout0=tout1=xor0=xor1=0;
+       tin[0]=tin[1]=0;
+       }
+
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/des/des.doc     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,505 @@
+The DES library.
+
+Please note that this library was originally written to operate with
+eBones, a version of Kerberos that had had encryption removed when it left
+the USA and then put back in.  As such there are some routines that I will
+advise not using but they are still in the library for historical reasons.
+For all calls that have an 'input' and 'output' variables, they can be the
+same.
+
+This library requires the inclusion of 'des.h'.
+
+All of the encryption functions take what is called a des_key_schedule as an 
+argument.  A des_key_schedule is an expanded form of the des key.
+A des_key is 8 bytes of odd parity, the type used to hold the key is a
+des_cblock.  A des_cblock is an array of 8 bytes, often in this library
+description I will refer to input bytes when the function specifies
+des_cblock's as input or output, this just means that the variable should
+be a multiple of 8 bytes.
+
+The define DES_ENCRYPT is passed to specify encryption, DES_DECRYPT to
+specify decryption.  The functions and global variable are as follows:
+
+int des_check_key;
+       DES keys are supposed to be odd parity.  If this variable is set to
+       a non-zero value, des_set_key() will check that the key has odd
+       parity and is not one of the known weak DES keys.  By default this
+       variable is turned off;
+       
+void des_set_odd_parity(
+des_cblock *key );
+       This function takes a DES key (8 bytes) and sets the parity to odd.
+       
+int des_is_weak_key(
+des_cblock *key );
+       This function returns a non-zero value if the DES key passed is a
+       weak, DES key.  If it is a weak key, don't use it, try a different
+       one.  If you are using 'random' keys, the chances of hitting a weak
+       key are 1/2^52 so it is probably not worth checking for them.
+       
+int des_set_key(
+des_cblock *key,
+des_key_schedule schedule);
+       Des_set_key converts an 8 byte DES key into a des_key_schedule.
+       A des_key_schedule is an expanded form of the key which is used to
+       perform actual encryption.  It can be regenerated from the DES key
+       so it only needs to be kept when encryption or decryption is about
+       to occur.  Don't save or pass around des_key_schedule's since they
+       are CPU architecture dependent, DES keys are not.  If des_check_key
+       is non zero, zero is returned if the key has the wrong parity or
+       the key is a weak key, else 1 is returned.
+       
+int des_key_sched(
+des_cblock *key,
+des_key_schedule schedule);
+       An alternative name for des_set_key().
+
+int des_rw_mode;               /* defaults to DES_PCBC_MODE */
+       This flag holds either DES_CBC_MODE or DES_PCBC_MODE (default).
+       This specifies the function to use in the enc_read() and enc_write()
+       functions.
+
+void des_encrypt(
+unsigned long *data,
+des_key_schedule ks,
+int enc);
+       This is the DES encryption function that gets called by just about
+       every other DES routine in the library.  You should not use this
+       function except to implement 'modes' of DES.  I say this because the
+       functions that call this routine do the conversion from 'char *' to
+       long, and this needs to be done to make sure 'non-aligned' memory
+       access do not occur.  The characters are loaded 'little endian',
+       have a look at my source code for more details on how I use this
+       function.
+       Data is a pointer to 2 unsigned long's and ks is the
+       des_key_schedule to use.  enc, is non zero specifies encryption,
+       zero if decryption.
+
+void des_encrypt2(
+unsigned long *data,
+des_key_schedule ks,
+int enc);
+       This functions is the same as des_encrypt() except that the DES
+       initial permutation (IP) and final permutation (FP) have been left
+       out.  As for des_encrypt(), you should not use this function.
+       It is used by the routines in my library that implement triple DES.
+       IP() des_encrypt2() des_encrypt2() des_encrypt2() FP() is the same
+       as des_encrypt() des_encrypt() des_encrypt() except faster :-).
+
+void des_ecb_encrypt(
+des_cblock *input,
+des_cblock *output,
+des_key_schedule ks,
+int enc);
+       This is the basic Electronic Code Book form of DES, the most basic
+       form.  Input is encrypted into output using the key represented by
+       ks.  If enc is non zero (DES_ENCRYPT), encryption occurs, otherwise
+       decryption occurs.  Input is 8 bytes long and output is 8 bytes.
+       (the des_cblock structure is 8 chars).
+       
+void des_ecb3_encrypt(
+des_cblock *input,
+des_cblock *output,
+des_key_schedule ks1,
+des_key_schedule ks2,
+des_key_schedule ks3,
+int enc);
+       This is the 3 key EDE mode of ECB DES.  What this means is that 
+       the 8 bytes of input is encrypted with ks1, decrypted with ks2 and
+       then encrypted again with ks3, before being put into output;
+       C=E(ks3,D(ks2,E(ks1,M))).  There is a macro, des_ecb2_encrypt()
+       that only takes 2 des_key_schedules that implements,
+       C=E(ks1,D(ks2,E(ks1,M))) in that the final encrypt is done with ks1.
+       
+void des_cbc_encrypt(
+des_cblock *input,
+des_cblock *output,
+long length,
+des_key_schedule ks,
+des_cblock *ivec,
+int enc);
+       This routine implements DES in Cipher Block Chaining mode.
+       Input, which should be a multiple of 8 bytes is encrypted
+       (or decrypted) to output which will also be a multiple of 8 bytes.
+       The number of bytes is in length (and from what I've said above,
+       should be a multiple of 8).  If length is not a multiple of 8, I'm
+       not being held responsible :-).  ivec is the initialisation vector.
+       This function does not modify this variable.  To correctly implement
+       cbc mode, you need to do one of 2 things; copy the last 8 bytes of
+       cipher text for use as the next ivec in your application,
+       or use des_ncbc_encrypt(). 
+       Only this routine has this problem with updating the ivec, all
+       other routines that are implementing cbc mode update ivec.
+       
+void des_ncbc_encrypt(
+des_cblock *input,
+des_cblock *output,
+long length,
+des_key_schedule sk,
+des_cblock *ivec,
+int enc);
+       For historical reasons, des_cbc_encrypt() did not update the
+       ivec with the value requires so that subsequent calls to
+       des_cbc_encrypt() would 'chain'.  This was needed so that the same
+       'length' values would not need to be used when decrypting.
+       des_ncbc_encrypt() does the right thing.  It is the same as
+       des_cbc_encrypt accept that ivec is updates with the correct value
+       to pass in subsequent calls to des_ncbc_encrypt().  I advise using
+       des_ncbc_encrypt() instead of des_cbc_encrypt();
+
+void des_xcbc_encrypt(
+des_cblock *input,
+des_cblock *output,
+long length,
+des_key_schedule sk,
+des_cblock *ivec,
+des_cblock *inw,
+des_cblock *outw,
+int enc);
+       This is RSA's DESX mode of DES.  It uses inw and outw to
+       'whiten' the encryption.  inw and outw are secret (unlike the iv)
+       and are as such, part of the key.  So the key is sort of 24 bytes.
+       This is much better than cbc des.
+       
+void des_3cbc_encrypt(
+des_cblock *input,
+des_cblock *output,
+long length,
+des_key_schedule sk1,
+des_key_schedule sk2,
+des_cblock *ivec1,
+des_cblock *ivec2,
+int enc);
+       This function is flawed, do not use it.  I have left it in the
+       library because it is used in my des(1) program and will function
+       correctly when used by des(1).  If I removed the function, people
+       could end up unable to decrypt files.
+       This routine implements outer triple cbc encryption using 2 ks and
+       2 ivec's.  Use des_ede2_cbc_encrypt() instead.
+       
+void des_ede3_cbc_encrypt(
+des_cblock *input,
+des_cblock *output, 
+long length,
+des_key_schedule ks1,
+des_key_schedule ks2, 
+des_key_schedule ks3, 
+des_cblock *ivec,
+int enc);
+       This function implements inner triple CBC DES encryption with 3
+       keys.  What this means is that each 'DES' operation
+       inside the cbc mode is really an C=E(ks3,D(ks2,E(ks1,M))).
+       Again, this is cbc mode so an ivec is requires.
+       This mode is used by SSL.
+       There is also a des_ede2_cbc_encrypt() that only uses 2
+       des_key_schedule's, the first being reused for the final
+       encryption.  C=E(ks1,D(ks2,E(ks1,M))).  This form of triple DES
+       is used by the RSAref library.
+       
+void des_pcbc_encrypt(
+des_cblock *input,
+des_cblock *output,
+long length,
+des_key_schedule ks,
+des_cblock *ivec,
+int enc);
+       This is Propagating Cipher Block Chaining mode of DES.  It is used
+       by Kerberos v4.  It's parameters are the same as des_ncbc_encrypt().
+       
+void des_cfb_encrypt(
+unsigned char *in,
+unsigned char *out,
+int numbits,
+long length,
+des_key_schedule ks,
+des_cblock *ivec,
+int enc);
+       Cipher Feedback Back mode of DES.  This implementation 'feeds back'
+       in numbit blocks.  The input (and output) is in multiples of numbits
+       bits.  numbits should to be a multiple of 8 bits.  Length is the
+       number of bytes input.  If numbits is not a multiple of 8 bits,
+       the extra bits in the bytes will be considered padding.  So if
+       numbits is 12, for each 2 input bytes, the 4 high bits of the
+       second byte will be ignored.  So to encode 72 bits when using
+       a numbits of 12 take 12 bytes.  To encode 72 bits when using
+       numbits of 9 will take 16 bytes.  To encode 80 bits when using
+       numbits of 16 will take 10 bytes. etc, etc.  This padding will
+       apply to both input and output.
+
+       
+void des_cfb64_encrypt(
+unsigned char *in,
+unsigned char *out,
+long length,
+des_key_schedule ks,
+des_cblock *ivec,
+int *num,
+int enc);
+       This is one of the more useful functions in this DES library, it
+       implements CFB mode of DES with 64bit feedback.  Why is this
+       useful you ask?  Because this routine will allow you to encrypt an
+       arbitrary number of bytes, no 8 byte padding.  Each call to this
+       routine will encrypt the input bytes to output and then update ivec
+       and num.  num contains 'how far' we are though ivec.  If this does
+       not make much sense, read more about cfb mode of DES :-).
+       
+void des_ede3_cfb64_encrypt(
+unsigned char *in,
+unsigned char *out,
+long length,
+des_key_schedule ks1,
+des_key_schedule ks2,
+des_key_schedule ks3,
+des_cblock *ivec,
+int *num,
+int enc);
+       Same as des_cfb64_encrypt() accept that the DES operation is
+       triple DES.  As usual, there is a macro for
+       des_ede2_cfb64_encrypt() which reuses ks1.
+
+void des_ofb_encrypt(
+unsigned char *in,
+unsigned char *out,
+int numbits,
+long length,
+des_key_schedule ks,
+des_cblock *ivec);
+       This is a implementation of Output Feed Back mode of DES.  It is
+       the same as des_cfb_encrypt() in that numbits is the size of the
+       units dealt with during input and output (in bits).
+       
+void des_ofb64_encrypt(
+unsigned char *in,
+unsigned char *out,
+long length,
+des_key_schedule ks,
+des_cblock *ivec,
+int *num);
+       The same as des_cfb64_encrypt() except that it is Output Feed Back
+       mode.
+
+void des_ede3_ofb64_encrypt(
+unsigned char *in,
+unsigned char *out,
+long length,
+des_key_schedule ks1,
+des_key_schedule ks2,
+des_key_schedule ks3,
+des_cblock *ivec,
+int *num);
+       Same as des_ofb64_encrypt() accept that the DES operation is
+       triple DES.  As usual, there is a macro for
+       des_ede2_ofb64_encrypt() which reuses ks1.
+
+int des_read_pw_string(
+char *buf,
+int length,
+char *prompt,
+int verify);
+       This routine is used to get a password from the terminal with echo
+       turned off.  Buf is where the string will end up and length is the
+       size of buf.  Prompt is a string presented to the 'user' and if
+       verify is set, the key is asked for twice and unless the 2 copies
+       match, an error is returned.  A return code of -1 indicates a
+       system error, 1 failure due to use interaction, and 0 is success.
+
+unsigned long des_cbc_cksum(
+des_cblock *input,
+des_cblock *output,
+long length,
+des_key_schedule ks,
+des_cblock *ivec);
+       This function produces an 8 byte checksum from input that it puts in
+       output and returns the last 4 bytes as a long.  The checksum is
+       generated via cbc mode of DES in which only the last 8 byes are
+       kept.  I would recommend not using this function but instead using
+       the EVP_Digest routines, or at least using MD5 or SHA.  This
+       function is used by Kerberos v4 so that is why it stays in the
+       library.
+       
+char *des_fcrypt(
+const char *buf,
+const char *salt
+char *ret);
+       This is my fast version of the unix crypt(3) function.  This version
+       takes only a small amount of space relative to other fast
+       crypt() implementations.  This is different to the normal crypt
+       in that the third parameter is the buffer that the return value
+       is written into.  It needs to be at least 14 bytes long.  This
+       function is thread safe, unlike the normal crypt.
+
+char *crypt(
+const char *buf,
+const char *salt);
+       This function calls des_fcrypt() with a static array passed as the
+       third parameter.  This emulates the normal non-thread safe semantics
+       of crypt(3).
+
+void des_string_to_key(
+char *str,
+des_cblock *key);
+       This function takes str and converts it into a DES key.  I would
+       recommend using MD5 instead and use the first 8 bytes of output.
+       When I wrote the first version of these routines back in 1990, MD5
+       did not exist but I feel these routines are still sound.  This
+       routines is compatible with the one in MIT's libdes.
+       
+void des_string_to_2keys(
+char *str,
+des_cblock *key1,
+des_cblock *key2);
+       This function takes str and converts it into 2 DES keys.
+       I would recommend using MD5 and using the 16 bytes as the 2 keys.
+       I have nothing against these 2 'string_to_key' routines, it's just
+       that if you say that your encryption key is generated by using the
+       16 bytes of an MD5 hash, every-one knows how you generated your
+       keys.
+
+int des_read_password(
+des_cblock *key,
+char *prompt,
+int verify);
+       This routine combines des_read_pw_string() with des_string_to_key().
+
+int des_read_2passwords(
+des_cblock *key1,
+des_cblock *key2,
+char *prompt,
+int verify);
+       This routine combines des_read_pw_string() with des_string_to_2key().
+
+void des_random_seed(
+des_cblock key);
+       This routine sets a starting point for des_random_key().
+       
+void des_random_key(
+des_cblock ret);
+       This function return a random key.  Make sure to 'seed' the random
+       number generator (with des_random_seed()) before using this function.
+       I personally now use a MD5 based random number system.
+
+int des_enc_read(
+int fd,
+char *buf,
+int len,
+des_key_schedule ks,
+des_cblock *iv);
+       This function will write to a file descriptor the encrypted data
+       from buf.  This data will be preceded by a 4 byte 'byte count' and
+       will be padded out to 8 bytes.  The encryption is either CBC of
+       PCBC depending on the value of des_rw_mode.  If it is DES_PCBC_MODE,
+       pcbc is used, if DES_CBC_MODE, cbc is used.  The default is to use
+       DES_PCBC_MODE.
+
+int des_enc_write(
+int fd,
+char *buf,
+int len,
+des_key_schedule ks,
+des_cblock *iv);
+       This routines read stuff written by des_enc_read() and decrypts it.
+       I have used these routines quite a lot but I don't believe they are
+       suitable for non-blocking io.  If you are after a full
+       authentication/encryption over networks, have a look at SSL instead.
+
+unsigned long des_quad_cksum(
+des_cblock *input,
+des_cblock *output,
+long length,
+int out_count,
+des_cblock *seed);
+       This is a function from Kerberos v4 that is not anything to do with
+       DES but was needed.  It is a cksum that is quicker to generate than
+       des_cbc_cksum();  I personally would use MD5 routines now.
+=====
+Modes of DES
+Quite a bit of the following information has been taken from
+       AS 2805.5.2
+       Australian Standard
+       Electronic funds transfer - Requirements for interfaces,
+       Part 5.2: Modes of operation for an n-bit block cipher algorithm
+       Appendix A
+
+There are several different modes in which DES can be used, they are
+as follows.
+
+Electronic Codebook Mode (ECB) (des_ecb_encrypt())
+- 64 bits are enciphered at a time.
+- The order of the blocks can be rearranged without detection.
+- The same plaintext block always produces the same ciphertext block
+  (for the same key) making it vulnerable to a 'dictionary attack'.
+- An error will only affect one ciphertext block.
+
+Cipher Block Chaining Mode (CBC) (des_cbc_encrypt())
+- a multiple of 64 bits are enciphered at a time.
+- The CBC mode produces the same ciphertext whenever the same
+  plaintext is encrypted using the same key and starting variable.
+- The chaining operation makes the ciphertext blocks dependent on the
+  current and all preceding plaintext blocks and therefore blocks can not
+  be rearranged.
+- The use of different starting variables prevents the same plaintext
+  enciphering to the same ciphertext.
+- An error will affect the current and the following ciphertext blocks.
+
+Cipher Feedback Mode (CFB) (des_cfb_encrypt())
+- a number of bits (j) <= 64 are enciphered at a time.
+- The CFB mode produces the same ciphertext whenever the same
+  plaintext is encrypted using the same key and starting variable.
+- The chaining operation makes the ciphertext variables dependent on the
+  current and all preceding variables and therefore j-bit variables are
+  chained together and can not be rearranged.
+- The use of different starting variables prevents the same plaintext
+  enciphering to the same ciphertext.
+- The strength of the CFB mode depends on the size of k (maximal if
+  j == k).  In my implementation this is always the case.
+- Selection of a small value for j will require more cycles through
+  the encipherment algorithm per unit of plaintext and thus cause
+  greater processing overheads.
+- Only multiples of j bits can be enciphered.
+- An error will affect the current and the following ciphertext variables.
+
+Output Feedback Mode (OFB) (des_ofb_encrypt())
+- a number of bits (j) <= 64 are enciphered at a time.
+- The OFB mode produces the same ciphertext whenever the same
+  plaintext enciphered using the same key and starting variable.  More
+  over, in the OFB mode the same key stream is produced when the same
+  key and start variable are used.  Consequently, for security reasons
+  a specific start variable should be used only once for a given key.
+- The absence of chaining makes the OFB more vulnerable to specific attacks.
+- The use of different start variables values prevents the same
+  plaintext enciphering to the same ciphertext, by producing different
+  key streams.
+- Selection of a small value for j will require more cycles through
+  the encipherment algorithm per unit of plaintext and thus cause
+  greater processing overheads.
+- Only multiples of j bits can be enciphered.
+- OFB mode of operation does not extend ciphertext errors in the
+  resultant plaintext output.  Every bit error in the ciphertext causes
+  only one bit to be in error in the deciphered plaintext.
+- OFB mode is not self-synchronising.  If the two operation of
+  encipherment and decipherment get out of synchronism, the system needs
+  to be re-initialised.
+- Each re-initialisation should use a value of the start variable
+ different from the start variable values used before with the same
+ key.  The reason for this is that an identical bit stream would be
+ produced each time from the same parameters.  This would be
+ susceptible to a ' known plaintext' attack.
+
+Triple ECB Mode (des_ecb3_encrypt())
+- Encrypt with key1, decrypt with key2 and encrypt with key3 again.
+- As for ECB encryption but increases the key length to 168 bits.
+  There are theoretic attacks that can be used that make the effective
+  key length 112 bits, but this attack also requires 2^56 blocks of
+  memory, not very likely, even for the NSA.
+- If both keys are the same it is equivalent to encrypting once with
+  just one key.
+- If the first and last key are the same, the key length is 112 bits.
+  There are attacks that could reduce the key space to 55 bit's but it
+  requires 2^56 blocks of memory.
+- If all 3 keys are the same, this is effectively the same as normal
+  ecb mode.
+
+Triple CBC Mode (des_ede3_cbc_encrypt())
+- Encrypt with key1, decrypt with key2 and then encrypt with key3.
+- As for CBC encryption but increases the key length to 168 bits with
+  the same restrictions as for triple ecb mode.
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/des/des_enc.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,502 @@
+/* crypto/des/des_enc.c */
+/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+#include "des/des_locl.h"
+
+void des_encrypt(data, ks, enc)
+DES_LONG *data;
+des_key_schedule ks;
+int enc;
+       {
+       register DES_LONG l,r,t,u;
+#ifdef DES_PTR
+       register unsigned char *des_SP=(unsigned char *)des_SPtrans;
+#endif
+#ifndef DES_UNROLL
+       register int i;
+#endif
+       register DES_LONG *s;
+
+       r=data[0];
+       l=data[1];
+
+       IP(r,l);
+       /* Things have been modified so that the initial rotate is
+        * done outside the loop.  This required the
+        * des_SPtrans values in sp.h to be rotated 1 bit to the right.
+        * One perl script later and things have a 5% speed up on a sparc2.
+        * Thanks to Richard Outerbridge <71755.204@CompuServe.COM>
+        * for pointing this out. */
+       /* clear the top bits on machines with 8byte longs */
+       /* shift left by 2 */
+       r=ROTATE(r,29)&0xffffffffL;
+       l=ROTATE(l,29)&0xffffffffL;
+
+       s=(DES_LONG *)ks;
+       /* I don't know if it is worth the effort of loop unrolling the
+        * inner loop */
+       if (enc)
+               {
+#ifdef DES_UNROLL
+               D_ENCRYPT(l,r, 0); /*  1 */
+               D_ENCRYPT(r,l, 2); /*  2 */
+               D_ENCRYPT(l,r, 4); /*  3 */
+               D_ENCRYPT(r,l, 6); /*  4 */
+               D_ENCRYPT(l,r, 8); /*  5 */
+               D_ENCRYPT(r,l,10); /*  6 */
+               D_ENCRYPT(l,r,12); /*  7 */
+               D_ENCRYPT(r,l,14); /*  8 */
+               D_ENCRYPT(l,r,16); /*  9 */
+               D_ENCRYPT(r,l,18); /*  10 */
+               D_ENCRYPT(l,r,20); /*  11 */
+               D_ENCRYPT(r,l,22); /*  12 */
+               D_ENCRYPT(l,r,24); /*  13 */
+               D_ENCRYPT(r,l,26); /*  14 */
+               D_ENCRYPT(l,r,28); /*  15 */
+               D_ENCRYPT(r,l,30); /*  16 */
+#else
+               for (i=0; i<32; i+=8)
+                       {
+                       D_ENCRYPT(l,r,i+0); /*  1 */
+                       D_ENCRYPT(r,l,i+2); /*  2 */
+                       D_ENCRYPT(l,r,i+4); /*  3 */
+                       D_ENCRYPT(r,l,i+6); /*  4 */
+                       }
+#endif
+               }
+       else
+               {
+#ifdef DES_UNROLL
+               D_ENCRYPT(l,r,30); /* 16 */
+               D_ENCRYPT(r,l,28); /* 15 */
+               D_ENCRYPT(l,r,26); /* 14 */
+               D_ENCRYPT(r,l,24); /* 13 */
+               D_ENCRYPT(l,r,22); /* 12 */
+               D_ENCRYPT(r,l,20); /* 11 */
+               D_ENCRYPT(l,r,18); /* 10 */
+               D_ENCRYPT(r,l,16); /*  9 */
+               D_ENCRYPT(l,r,14); /*  8 */
+               D_ENCRYPT(r,l,12); /*  7 */
+               D_ENCRYPT(l,r,10); /*  6 */
+               D_ENCRYPT(r,l, 8); /*  5 */
+               D_ENCRYPT(l,r, 6); /*  4 */
+               D_ENCRYPT(r,l, 4); /*  3 */
+               D_ENCRYPT(l,r, 2); /*  2 */
+               D_ENCRYPT(r,l, 0); /*  1 */
+#else
+               for (i=30; i>0; i-=8)
+                       {
+                       D_ENCRYPT(l,r,i-0); /* 16 */
+                       D_ENCRYPT(r,l,i-2); /* 15 */
+                       D_ENCRYPT(l,r,i-4); /* 14 */
+                       D_ENCRYPT(r,l,i-6); /* 13 */
+                       }
+#endif
+               }
+
+       /* rotate and clear the top bits on machines with 8byte longs */
+       l=ROTATE(l,3)&0xffffffffL;
+       r=ROTATE(r,3)&0xffffffffL;
+
+       FP(r,l);
+       data[0]=l;
+       data[1]=r;
+       l=r=t=u=0;
+       }
+
+void des_encrypt2(data, ks, enc)
+DES_LONG *data;
+des_key_schedule ks;
+int enc;
+       {
+       register DES_LONG l,r,t,u;
+#ifdef DES_PTR
+       register unsigned char *des_SP=(unsigned char *)des_SPtrans;
+#endif
+#ifndef DES_UNROLL
+       register int i;
+#endif
+       register DES_LONG *s;
+
+       r=data[0];
+       l=data[1];
+
+       /* Things have been modified so that the initial rotate is
+        * done outside the loop.  This required the
+        * des_SPtrans values in sp.h to be rotated 1 bit to the right.
+        * One perl script later and things have a 5% speed up on a sparc2.
+        * Thanks to Richard Outerbridge <71755.204@CompuServe.COM>
+        * for pointing this out. */
+       /* clear the top bits on machines with 8byte longs */
+       r=ROTATE(r,29)&0xffffffffL;
+       l=ROTATE(l,29)&0xffffffffL;
+
+       s=(DES_LONG *)ks;
+       /* I don't know if it is worth the effort of loop unrolling the
+        * inner loop */
+       if (enc)
+               {
+#ifdef DES_UNROLL
+               D_ENCRYPT(l,r, 0); /*  1 */
+               D_ENCRYPT(r,l, 2); /*  2 */
+               D_ENCRYPT(l,r, 4); /*  3 */
+               D_ENCRYPT(r,l, 6); /*  4 */
+               D_ENCRYPT(l,r, 8); /*  5 */
+               D_ENCRYPT(r,l,10); /*  6 */
+               D_ENCRYPT(l,r,12); /*  7 */
+               D_ENCRYPT(r,l,14); /*  8 */
+               D_ENCRYPT(l,r,16); /*  9 */
+               D_ENCRYPT(r,l,18); /*  10 */
+               D_ENCRYPT(l,r,20); /*  11 */
+               D_ENCRYPT(r,l,22); /*  12 */
+               D_ENCRYPT(l,r,24); /*  13 */
+               D_ENCRYPT(r,l,26); /*  14 */
+               D_ENCRYPT(l,r,28); /*  15 */
+               D_ENCRYPT(r,l,30); /*  16 */
+#else
+               for (i=0; i<32; i+=8)
+                       {
+                       D_ENCRYPT(l,r,i+0); /*  1 */
+                       D_ENCRYPT(r,l,i+2); /*  2 */
+                       D_ENCRYPT(l,r,i+4); /*  3 */
+                       D_ENCRYPT(r,l,i+6); /*  4 */
+                       }
+#endif
+               }
+       else
+               {
+#ifdef DES_UNROLL
+               D_ENCRYPT(l,r,30); /* 16 */
+               D_ENCRYPT(r,l,28); /* 15 */
+               D_ENCRYPT(l,r,26); /* 14 */
+               D_ENCRYPT(r,l,24); /* 13 */
+               D_ENCRYPT(l,r,22); /* 12 */
+               D_ENCRYPT(r,l,20); /* 11 */
+               D_ENCRYPT(l,r,18); /* 10 */
+               D_ENCRYPT(r,l,16); /*  9 */
+               D_ENCRYPT(l,r,14); /*  8 */
+               D_ENCRYPT(r,l,12); /*  7 */
+               D_ENCRYPT(l,r,10); /*  6 */
+               D_ENCRYPT(r,l, 8); /*  5 */
+               D_ENCRYPT(l,r, 6); /*  4 */
+               D_ENCRYPT(r,l, 4); /*  3 */
+               D_ENCRYPT(l,r, 2); /*  2 */
+               D_ENCRYPT(r,l, 0); /*  1 */
+#else
+               for (i=30; i>0; i-=8)
+                       {
+                       D_ENCRYPT(l,r,i-0); /* 16 */
+                       D_ENCRYPT(r,l,i-2); /* 15 */
+                       D_ENCRYPT(l,r,i-4); /* 14 */
+                       D_ENCRYPT(r,l,i-6); /* 13 */
+                       }
+#endif
+               }
+       /* rotate and clear the top bits on machines with 8byte longs */
+       data[0]=ROTATE(l,3)&0xffffffffL;
+       data[1]=ROTATE(r,3)&0xffffffffL;
+       l=r=t=u=0;
+       }
+
+void des_encrypt3(data,ks1,ks2,ks3)
+DES_LONG *data;
+des_key_schedule ks1;
+des_key_schedule ks2;
+des_key_schedule ks3;
+       {
+       register DES_LONG l,r;
+
+       l=data[0];
+       r=data[1];
+       IP(l,r);
+       data[0]=l;
+       data[1]=r;
+       des_encrypt2((DES_LONG *)data,ks1,DES_ENCRYPT);
+       des_encrypt2((DES_LONG *)data,ks2,DES_DECRYPT);
+       des_encrypt2((DES_LONG *)data,ks3,DES_ENCRYPT);
+       l=data[0];
+       r=data[1];
+       FP(r,l);
+       data[0]=l;
+       data[1]=r;
+       }
+
+void des_decrypt3(data,ks1,ks2,ks3)
+DES_LONG *data;
+des_key_schedule ks1;
+des_key_schedule ks2;
+des_key_schedule ks3;
+       {
+       register DES_LONG l,r;
+
+       l=data[0];
+       r=data[1];
+       IP(l,r);
+       data[0]=l;
+       data[1]=r;
+       des_encrypt2((DES_LONG *)data,ks3,DES_DECRYPT);
+       des_encrypt2((DES_LONG *)data,ks2,DES_ENCRYPT);
+       des_encrypt2((DES_LONG *)data,ks1,DES_DECRYPT);
+       l=data[0];
+       r=data[1];
+       FP(r,l);
+       data[0]=l;
+       data[1]=r;
+       }
+
+#ifndef DES_DEFAULT_OPTIONS
+
+void des_ncbc_encrypt(input, output, length, schedule, ivec, enc)
+des_cblock (*input);
+des_cblock (*output);
+long length;
+des_key_schedule schedule;
+des_cblock (*ivec);
+int enc;
+       {
+       register DES_LONG tin0,tin1;
+       register DES_LONG tout0,tout1,xor0,xor1;
+       register unsigned char *in,*out;
+       register long l=length;
+       DES_LONG tin[2];
+       unsigned char *iv;
+
+       in=(unsigned char *)input;
+       out=(unsigned char *)output;
+       iv=(unsigned char *)ivec;
+
+       if (enc)
+               {
+               c2l(iv,tout0);
+               c2l(iv,tout1);
+               for (l-=8; l>=0; l-=8)
+                       {
+                       c2l(in,tin0);
+                       c2l(in,tin1);
+                       tin0^=tout0; tin[0]=tin0;
+                       tin1^=tout1; tin[1]=tin1;
+                       des_encrypt((DES_LONG *)tin,schedule,DES_ENCRYPT);
+                       tout0=tin[0]; l2c(tout0,out);
+                       tout1=tin[1]; l2c(tout1,out);
+                       }
+               if (l != -8)
+                       {
+                       c2ln(in,tin0,tin1,l+8);
+                       tin0^=tout0; tin[0]=tin0;
+                       tin1^=tout1; tin[1]=tin1;
+                       des_encrypt((DES_LONG *)tin,schedule,DES_ENCRYPT);
+                       tout0=tin[0]; l2c(tout0,out);
+                       tout1=tin[1]; l2c(tout1,out);
+                       }
+               iv=(unsigned char *)ivec;
+               l2c(tout0,iv);
+               l2c(tout1,iv);
+               }
+       else
+               {
+               c2l(iv,xor0);
+               c2l(iv,xor1);
+               for (l-=8; l>=0; l-=8)
+                       {
+                       c2l(in,tin0); tin[0]=tin0;
+                       c2l(in,tin1); tin[1]=tin1;
+                       des_encrypt((DES_LONG *)tin,schedule,DES_DECRYPT);
+                       tout0=tin[0]^xor0;
+                       tout1=tin[1]^xor1;
+                       l2c(tout0,out);
+                       l2c(tout1,out);
+                       xor0=tin0;
+                       xor1=tin1;
+                       }
+               if (l != -8)
+                       {
+                       c2l(in,tin0); tin[0]=tin0;
+                       c2l(in,tin1); tin[1]=tin1;
+                       des_encrypt((DES_LONG *)tin,schedule,DES_DECRYPT);
+                       tout0=tin[0]^xor0;
+                       tout1=tin[1]^xor1;
+                       l2cn(tout0,tout1,out,l+8);
+                       xor0=tin0;
+                       xor1=tin1;
+                       }
+
+               iv=(unsigned char *)ivec;
+               l2c(xor0,iv);
+               l2c(xor1,iv);
+               }
+       tin0=tin1=tout0=tout1=xor0=xor1=0;
+       tin[0]=tin[1]=0;
+       }
+
+void des_ede3_cbc_encrypt(input, output, length, ks1, ks2, ks3, ivec, enc)
+des_cblock (*input);
+des_cblock (*output);
+long length;
+des_key_schedule ks1;
+des_key_schedule ks2;
+des_key_schedule ks3;
+des_cblock (*ivec);
+int enc;
+       {
+       register DES_LONG tin0,tin1;
+       register DES_LONG tout0,tout1,xor0,xor1;
+       register unsigned char *in,*out;
+       register long l=length;
+       DES_LONG tin[2];
+       unsigned char *iv;
+
+       in=(unsigned char *)input;
+       out=(unsigned char *)output;
+       iv=(unsigned char *)ivec;
+
+       if (enc)
+               {
+               c2l(iv,tout0);
+               c2l(iv,tout1);
+               for (l-=8; l>=0; l-=8)
+                       {
+                       c2l(in,tin0);
+                       c2l(in,tin1);
+                       tin0^=tout0;
+                       tin1^=tout1;
+
+                       tin[0]=tin0;
+                       tin[1]=tin1;
+                       des_encrypt3((DES_LONG *)tin,ks1,ks2,ks3);
+                       tout0=tin[0];
+                       tout1=tin[1];
+
+                       l2c(tout0,out);
+                       l2c(tout1,out);
+                       }
+               if (l != -8)
+                       {
+                       c2ln(in,tin0,tin1,l+8);
+                       tin0^=tout0;
+                       tin1^=tout1;
+
+                       tin[0]=tin0;
+                       tin[1]=tin1;
+                       des_encrypt3((DES_LONG *)tin,ks1,ks2,ks3);
+                       tout0=tin[0];
+                       tout1=tin[1];
+
+                       l2c(tout0,out);
+                       l2c(tout1,out);
+                       }
+               iv=(unsigned char *)ivec;
+               l2c(tout0,iv);
+               l2c(tout1,iv);
+               }
+       else
+               {
+               register DES_LONG t0,t1;
+
+               c2l(iv,xor0);
+               c2l(iv,xor1);
+               for (l-=8; l>=0; l-=8)
+                       {
+                       c2l(in,tin0);
+                       c2l(in,tin1);
+
+                       t0=tin0;
+                       t1=tin1;
+
+                       tin[0]=tin0;
+                       tin[1]=tin1;
+                       des_decrypt3((DES_LONG *)tin,ks1,ks2,ks3);
+                       tout0=tin[0];
+                       tout1=tin[1];
+
+                       tout0^=xor0;
+                       tout1^=xor1;
+                       l2c(tout0,out);
+                       l2c(tout1,out);
+                       xor0=t0;
+                       xor1=t1;
+                       }
+               if (l != -8)
+                       {
+                       c2l(in,tin0);
+                       c2l(in,tin1);
+                       
+                       t0=tin0;
+                       t1=tin1;
+
+                       tin[0]=tin0;
+                       tin[1]=tin1;
+                       des_decrypt3((DES_LONG *)tin,ks1,ks2,ks3);
+                       tout0=tin[0];
+                       tout1=tin[1];
+               
+                       tout0^=xor0;
+                       tout1^=xor1;
+                       l2cn(tout0,tout1,out,l+8);
+                       xor0=t0;
+                       xor1=t1;
+                       }
+
+               iv=(unsigned char *)ivec;
+               l2c(xor0,iv);
+               l2c(xor1,iv);
+               }
+       tin0=tin1=tout0=tout1=xor0=xor1=0;
+       tin[0]=tin[1]=0;
+       }
+
+#endif /* DES_DEFAULT_OPTIONS */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/des/des_opts.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,620 @@
+/* crypto/des/des_opts.c */
+/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+/* define PART1, PART2, PART3 or PART4 to build only with a few of the options.
+ * This is for machines with 64k code segment size restrictions. */
+
+#ifndef MSDOS
+#define TIMES
+#endif
+
+#include <stdio.h>
+#ifndef MSDOS
+#include <unistd.h>
+#else
+#include <io.h>
+extern void exit();
+#endif
+#include <signal.h>
+#ifndef VMS
+#ifndef _IRIX
+#include <time.h>
+#endif
+#ifdef TIMES
+#include <sys/types.h>
+#include <sys/times.h>
+#endif
+#else /* VMS */
+#include <types.h>
+struct tms {
+       time_t tms_utime;
+       time_t tms_stime;
+       time_t tms_uchild;      /* I dunno...  */
+       time_t tms_uchildsys;   /* so these names are a guess :-) */
+       }
+#endif
+#ifndef TIMES
+#include <sys/timeb.h>
+#endif
+
+#ifdef sun
+#include <limits.h>
+#include <sys/param.h>
+#endif
+
+#include "des/des_locl.h"
+#include "des/spr.h"
+
+#define DES_DEFAULT_OPTIONS
+
+#if !defined(PART1) && !defined(PART2) && !defined(PART3) && !defined(PART4)
+#define PART1
+#define PART2
+#define PART3
+#define PART4
+#endif
+
+#ifdef PART1
+
+#undef DES_UNROLL
+#undef DES_RISC1
+#undef DES_RISC2
+#undef DES_PTR
+#undef D_ENCRYPT
+#define des_encrypt  des_encrypt_u4_cisc_idx
+#define des_encrypt2 des_encrypt2_u4_cisc_idx
+#define des_encrypt3 des_encrypt3_u4_cisc_idx
+#define des_decrypt3 des_decrypt3_u4_cisc_idx
+#undef HEADER_DES_LOCL_H
+#include "des_enc.c"
+
+#define DES_UNROLL
+#undef DES_RISC1
+#undef DES_RISC2
+#undef DES_PTR
+#undef D_ENCRYPT
+#undef des_encrypt
+#undef des_encrypt2
+#undef des_encrypt3
+#undef des_decrypt3
+#define des_encrypt  des_encrypt_u16_cisc_idx
+#define des_encrypt2 des_encrypt2_u16_cisc_idx
+#define des_encrypt3 des_encrypt3_u16_cisc_idx
+#define des_decrypt3 des_decrypt3_u16_cisc_idx
+#undef HEADER_DES_LOCL_H
+#include "des_enc.c"
+
+#undef DES_UNROLL
+#define DES_RISC1
+#undef DES_RISC2
+#undef DES_PTR
+#undef D_ENCRYPT
+#undef des_encrypt
+#undef des_encrypt2
+#undef des_encrypt3
+#undef des_decrypt3
+#define des_encrypt  des_encrypt_u4_risc1_idx
+#define des_encrypt2 des_encrypt2_u4_risc1_idx
+#define des_encrypt3 des_encrypt3_u4_risc1_idx
+#define des_decrypt3 des_decrypt3_u4_risc1_idx
+#undef HEADER_DES_LOCL_H
+#include "des_enc.c"
+
+#endif
+
+#ifdef PART2
+
+#undef DES_UNROLL
+#undef DES_RISC1
+#define DES_RISC2
+#undef DES_PTR
+#undef D_ENCRYPT
+#undef des_encrypt
+#undef des_encrypt2
+#undef des_encrypt3
+#undef des_decrypt3
+#define des_encrypt  des_encrypt_u4_risc2_idx
+#define des_encrypt2 des_encrypt2_u4_risc2_idx
+#define des_encrypt3 des_encrypt3_u4_risc2_idx
+#define des_decrypt3 des_decrypt3_u4_risc2_idx
+#undef HEADER_DES_LOCL_H
+#include "des_enc.c"
+
+#define DES_UNROLL
+#define DES_RISC1
+#undef DES_RISC2
+#undef DES_PTR
+#undef D_ENCRYPT
+#undef des_encrypt
+#undef des_encrypt2
+#undef des_encrypt3
+#undef des_decrypt3
+#define des_encrypt  des_encrypt_u16_risc1_idx
+#define des_encrypt2 des_encrypt2_u16_risc1_idx
+#define des_encrypt3 des_encrypt3_u16_risc1_idx
+#define des_decrypt3 des_decrypt3_u16_risc1_idx
+#undef HEADER_DES_LOCL_H
+#include "des_enc.c"
+
+#define DES_UNROLL
+#undef DES_RISC1
+#define DES_RISC2
+#undef DES_PTR
+#undef D_ENCRYPT
+#undef des_encrypt
+#undef des_encrypt2
+#undef des_encrypt3
+#undef des_decrypt3
+#define des_encrypt  des_encrypt_u16_risc2_idx
+#define des_encrypt2 des_encrypt2_u16_risc2_idx
+#define des_encrypt3 des_encrypt3_u16_risc2_idx
+#define des_decrypt3 des_decrypt3_u16_risc2_idx
+#undef HEADER_DES_LOCL_H
+#include "des_enc.c"
+
+#endif
+
+#ifdef PART3
+
+#undef DES_UNROLL
+#undef DES_RISC1
+#undef DES_RISC2
+#define DES_PTR
+#undef D_ENCRYPT
+#undef des_encrypt
+#undef des_encrypt2
+#undef des_encrypt3
+#undef des_decrypt3
+#define des_encrypt  des_encrypt_u4_cisc_ptr
+#define des_encrypt2 des_encrypt2_u4_cisc_ptr
+#define des_encrypt3 des_encrypt3_u4_cisc_ptr
+#define des_decrypt3 des_decrypt3_u4_cisc_ptr
+#undef HEADER_DES_LOCL_H
+#include "des_enc.c"
+
+#define DES_UNROLL
+#undef DES_RISC1
+#undef DES_RISC2
+#define DES_PTR
+#undef D_ENCRYPT
+#undef des_encrypt
+#undef des_encrypt2
+#undef des_encrypt3
+#undef des_decrypt3
+#define des_encrypt  des_encrypt_u16_cisc_ptr
+#define des_encrypt2 des_encrypt2_u16_cisc_ptr
+#define des_encrypt3 des_encrypt3_u16_cisc_ptr
+#define des_decrypt3 des_decrypt3_u16_cisc_ptr
+#undef HEADER_DES_LOCL_H
+#include "des_enc.c"
+
+#undef DES_UNROLL
+#define DES_RISC1
+#undef DES_RISC2
+#define DES_PTR
+#undef D_ENCRYPT
+#undef des_encrypt
+#undef des_encrypt2
+#undef des_encrypt3
+#undef des_decrypt3
+#define des_encrypt  des_encrypt_u4_risc1_ptr
+#define des_encrypt2 des_encrypt2_u4_risc1_ptr
+#define des_encrypt3 des_encrypt3_u4_risc1_ptr
+#define des_decrypt3 des_decrypt3_u4_risc1_ptr
+#undef HEADER_DES_LOCL_H
+#include "des_enc.c"
+
+#endif
+
+#ifdef PART4
+
+#undef DES_UNROLL
+#undef DES_RISC1
+#define DES_RISC2
+#define DES_PTR
+#undef D_ENCRYPT
+#undef des_encrypt
+#undef des_encrypt2
+#undef des_encrypt3
+#undef des_decrypt3
+#define des_encrypt  des_encrypt_u4_risc2_ptr
+#define des_encrypt2 des_encrypt2_u4_risc2_ptr
+#define des_encrypt3 des_encrypt3_u4_risc2_ptr
+#define des_decrypt3 des_decrypt3_u4_risc2_ptr
+#undef HEADER_DES_LOCL_H
+#include "des_enc.c"
+
+#define DES_UNROLL
+#define DES_RISC1
+#undef DES_RISC2
+#define DES_PTR
+#undef D_ENCRYPT
+#undef des_encrypt
+#undef des_encrypt2
+#undef des_encrypt3
+#undef des_decrypt3
+#define des_encrypt  des_encrypt_u16_risc1_ptr
+#define des_encrypt2 des_encrypt2_u16_risc1_ptr
+#define des_encrypt3 des_encrypt3_u16_risc1_ptr
+#define des_decrypt3 des_decrypt3_u16_risc1_ptr
+#undef HEADER_DES_LOCL_H
+#include "des_enc.c"
+
+#define DES_UNROLL
+#undef DES_RISC1
+#define DES_RISC2
+#define DES_PTR
+#undef D_ENCRYPT
+#undef des_encrypt
+#undef des_encrypt2
+#undef des_encrypt3
+#undef des_decrypt3
+#define des_encrypt  des_encrypt_u16_risc2_ptr
+#define des_encrypt2 des_encrypt2_u16_risc2_ptr
+#define des_encrypt3 des_encrypt3_u16_risc2_ptr
+#define des_decrypt3 des_decrypt3_u16_risc2_ptr
+#undef HEADER_DES_LOCL_H
+#include "des_enc.c"
+
+#endif
+
+/* The following if from times(3) man page.  It may need to be changed */
+#ifndef HZ
+# ifndef CLK_TCK
+#  ifndef _BSD_CLK_TCK_ /* FreeBSD fix */
+#   ifndef VMS
+#    define HZ 100.0
+#   else /* VMS */
+#    define HZ 100.0
+#   endif
+#  else /* _BSD_CLK_TCK_ */
+#   define HZ ((double)_BSD_CLK_TCK_)
+#  endif
+# else /* CLK_TCK */
+#  define HZ ((double)CLK_TCK)
+# endif
+#endif
+
+#define BUFSIZE        ((long)1024)
+long run=0;
+
+#ifndef NOPROTO
+double Time_F(int s);
+#else
+double Time_F();
+#endif
+
+#ifdef SIGALRM
+#if defined(__STDC__) || defined(sgi)
+#define SIGRETTYPE void
+#else
+#define SIGRETTYPE int
+#endif
+
+#ifndef NOPROTO
+SIGRETTYPE sig_done(int sig);
+#else
+SIGRETTYPE sig_done();
+#endif
+
+SIGRETTYPE sig_done(sig)
+int sig;
+       {
+       signal(SIGALRM,sig_done);
+       run=0;
+#ifdef LINT
+       sig=sig;
+#endif
+       }
+#endif
+
+#define START  0
+#define STOP   1
+
+double Time_F(s)
+int s;
+       {
+       double ret;
+#ifdef TIMES
+       static struct tms tstart,tend;
+
+       if (s == START)
+               {
+               times(&tstart);
+               return(0);
+               }
+       else
+               {
+               times(&tend);
+               ret=((double)(tend.tms_utime-tstart.tms_utime))/HZ;
+               return((ret == 0.0)?1e-6:ret);
+               }
+#else /* !times() */
+       static struct timeb tstart,tend;
+       long i;
+
+       if (s == START)
+               {
+               ftime(&tstart);
+               return(0);
+               }
+       else
+               {
+               ftime(&tend);
+               i=(long)tend.millitm-(long)tstart.millitm;
+               ret=((double)(tend.time-tstart.time))+((double)i)/1000.0;
+               return((ret == 0.0)?1e-6:ret);
+               }
+#endif
+       }
+
+#ifdef SIGALRM
+#define print_name(name) fprintf(stderr,"Doing %s's for 10 seconds\n",name); alarm(10);
+#else
+#define print_name(name) fprintf(stderr,"Doing %s %ld times\n",name,cb);
+#endif
+       
+#define time_it(func,name,index) \
+       print_name(name); \
+       Time_F(START); \
+       for (count=0,run=1; COND(cb); count++) \
+               { \
+               unsigned long d[2]; \
+               func(d,&(sch[0]),DES_ENCRYPT); \
+               } \
+       tm[index]=Time_F(STOP); \
+       fprintf(stderr,"%ld %s's in %.2f second\n",count,name,tm[index]); \
+       tm[index]=((double)COUNT(cb))/tm[index];
+
+#define print_it(name,index) \
+       fprintf(stderr,"%s bytes per sec = %12.2f (%5.1fuS)\n",name, \
+               tm[index]*8,1.0e6/tm[index]);
+
+int main(argc,argv)
+int argc;
+char **argv;
+       {
+       long count;
+       static unsigned char buf[BUFSIZE];
+       static des_cblock key ={0x12,0x34,0x56,0x78,0x9a,0xbc,0xde,0xf0};
+       static des_cblock key2={0x34,0x56,0x78,0x9a,0xbc,0xde,0xf0,0x12};
+       static des_cblock key3={0x56,0x78,0x9a,0xbc,0xde,0xf0,0x12,0x34};
+       des_key_schedule sch,sch2,sch3;
+       double d,tm[16],max=0;
+       int rank[16];
+       char *str[16];
+       int max_idx=0,i,num=0,j;
+#ifndef SIGALARM
+       long ca,cb,cc,cd,ce;
+#endif
+
+       for (i=0; i<12; i++)
+               {
+               tm[i]=0.0;
+               rank[i]=0;
+               }
+
+#ifndef TIMES
+       fprintf(stderr,"To get the most acurate results, try to run this\n");
+       fprintf(stderr,"program when this computer is idle.\n");
+#endif
+
+       des_set_key((C_Block *)key,sch);
+       des_set_key((C_Block *)key2,sch2);
+       des_set_key((C_Block *)key3,sch3);
+
+#ifndef SIGALRM
+       fprintf(stderr,"First we calculate the approximate speed ...\n");
+       des_set_key((C_Block *)key,sch);
+       count=10;
+       do      {
+               long i;
+               unsigned long data[2];
+
+               count*=2;
+               Time_F(START);
+               for (i=count; i; i--)
+                       des_encrypt(data,&(sch[0]),DES_ENCRYPT);
+               d=Time_F(STOP);
+               } while (d < 3.0);
+       ca=count;
+       cb=count*3;
+       cc=count*3*8/BUFSIZE+1;
+       cd=count*8/BUFSIZE+1;
+
+       ce=count/20+1;
+#define COND(d) (count != (d))
+#define COUNT(d) (d)
+#else
+#define COND(c) (run)
+#define COUNT(d) (count)
+        signal(SIGALRM,sig_done);
+        alarm(10);
+#endif
+
+#ifdef PART1
+       time_it(des_encrypt_u4_cisc_idx,  "des_encrypt_u4_cisc_idx  ", 0);
+       time_it(des_encrypt_u16_cisc_idx, "des_encrypt_u16_cisc_idx ", 1);
+       time_it(des_encrypt_u4_risc1_idx, "des_encrypt_u4_risc1_idx ", 2);
+       num+=3;
+#endif
+#ifdef PART2
+       time_it(des_encrypt_u16_risc1_idx,"des_encrypt_u16_risc1_idx", 3);
+       time_it(des_encrypt_u4_risc2_idx, "des_encrypt_u4_risc2_idx ", 4);
+       time_it(des_encrypt_u16_risc2_idx,"des_encrypt_u16_risc2_idx", 5);
+       num+=3;
+#endif
+#ifdef PART3
+       time_it(des_encrypt_u4_cisc_ptr,  "des_encrypt_u4_cisc_ptr  ", 6);
+       time_it(des_encrypt_u16_cisc_ptr, "des_encrypt_u16_cisc_ptr ", 7);
+       time_it(des_encrypt_u4_risc1_ptr, "des_encrypt_u4_risc1_ptr ", 8);
+       num+=3;
+#endif
+#ifdef PART4
+       time_it(des_encrypt_u16_risc1_ptr,"des_encrypt_u16_risc1_ptr", 9);
+       time_it(des_encrypt_u4_risc2_ptr, "des_encrypt_u4_risc2_ptr ",10);
+       time_it(des_encrypt_u16_risc2_ptr,"des_encrypt_u16_risc2_ptr",11);
+       num+=3;
+#endif
+
+#ifdef PART1
+       str[0]=" 4  c i";
+       print_it("des_encrypt_u4_cisc_idx  ",0);
+       max=tm[0];
+       max_idx=0;
+       str[1]="16  c i";
+       print_it("des_encrypt_u16_cisc_idx ",1);
+       if (max < tm[1]) { max=tm[1]; max_idx=1; }
+       str[2]=" 4 r1 i";
+       print_it("des_encrypt_u4_risc1_idx ",2);
+       if (max < tm[2]) { max=tm[2]; max_idx=2; }
+#endif
+#ifdef PART2
+       str[3]="16 r1 i";
+       print_it("des_encrypt_u16_risc1_idx",3);
+       if (max < tm[3]) { max=tm[3]; max_idx=3; }
+       str[4]=" 4 r2 i";
+       print_it("des_encrypt_u4_risc2_idx ",4);
+       if (max < tm[4]) { max=tm[4]; max_idx=4; }
+       str[5]="16 r2 i";
+       print_it("des_encrypt_u16_risc2_idx",5);
+       if (max < tm[5]) { max=tm[5]; max_idx=5; }
+#endif
+#ifdef PART3
+       str[6]=" 4  c p";
+       print_it("des_encrypt_u4_cisc_ptr  ",6);
+       if (max < tm[6]) { max=tm[6]; max_idx=6; }
+       str[7]="16  c p";
+       print_it("des_encrypt_u16_cisc_ptr ",7);
+       if (max < tm[7]) { max=tm[7]; max_idx=7; }
+       str[8]=" 4 r1 p";
+       print_it("des_encrypt_u4_risc1_ptr ",8);
+       if (max < tm[8]) { max=tm[8]; max_idx=8; }
+#endif
+#ifdef PART4
+       str[9]="16 r1 p";
+       print_it("des_encrypt_u16_risc1_ptr",9);
+       if (max < tm[9]) { max=tm[9]; max_idx=9; }
+       str[10]=" 4 r2 p";
+       print_it("des_encrypt_u4_risc2_ptr ",10);
+       if (max < tm[10]) { max=tm[10]; max_idx=10; }
+       str[11]="16 r2 p";
+       print_it("des_encrypt_u16_risc2_ptr",11);
+       if (max < tm[11]) { max=tm[11]; max_idx=11; }
+#endif
+       printf("options    des ecb/s\n");
+       printf("%s %12.2f 100.0%%\n",str[max_idx],tm[max_idx]);
+       d=tm[max_idx];
+       tm[max_idx]= -2.0;
+       max= -1.0;
+       for (;;)
+               {
+               for (i=0; i<12; i++)
+                       {
+                       if (max < tm[i]) { max=tm[i]; j=i; }
+                       }
+               if (max < 0.0) break;
+               printf("%s %12.2f  %4.1f%%\n",str[j],tm[j],tm[j]/d*100.0);
+               tm[j]= -2.0;
+               max= -1.0;
+               }
+
+       switch (max_idx)
+               {
+       case 0:
+               printf("-DDES_DEFAULT_OPTIONS\n");
+               break;
+       case 1:
+               printf("-DDES_UNROLL\n");
+               break;
+       case 2:
+               printf("-DDES_RISC1\n");
+               break;
+       case 3:
+               printf("-DDES_UNROLL -DDES_RISC1\n");
+               break;
+       case 4:
+               printf("-DDES_RISC2\n");
+               break;
+       case 5:
+               printf("-DDES_UNROLL -DDES_RISC2\n");
+               break;
+       case 6:
+               printf("-DDES_PTR\n");
+               break;
+       case 7:
+               printf("-DDES_UNROLL -DDES_PTR\n");
+               break;
+       case 8:
+               printf("-DDES_RISC1 -DDES_PTR\n");
+               break;
+       case 9:
+               printf("-DDES_UNROLL -DDES_RISC1 -DDES_PTR\n");
+               break;
+       case 10:
+               printf("-DDES_RISC2 -DDES_PTR\n");
+               break;
+       case 11:
+               printf("-DDES_UNROLL -DDES_RISC2 -DDES_PTR\n");
+               break;
+               }
+       exit(0);
+#if defined(LINT) || defined(MSDOS)
+       return(0);
+#endif
+       }
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/des/dx86unix.S     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,3160 @@
+/* 
+ * This file was originally generated by Michael Richardson <mcr@freeswan.org>
+ * via the perl scripts found in the ASM subdir. It remains copyright of
+ * Eric Young, see the file COPYRIGHT.
+ *
+ * This was last done on October 9, 2002.
+ *
+ * While this file does not need to go through cpp, we pass it through
+ * CPP by naming it dx86unix.S instead of dx86unix.s because there is
+ * a bug in Rules.make for .s builds - specifically it references EXTRA_CFLAGS
+ * which may contain stuff that AS doesn't understand instead of
+ * referencing EXTRA_AFLAGS.
+ */     
+
+       .file   "dx86unix.S"
+       .version        "01.01"
+.text
+       .align 16 
+.globl des_encrypt
+       .type    des_encrypt , @function  
+des_encrypt:
+       pushl   %esi
+       pushl   %edi
+
+        
+       movl    12(%esp),       %esi
+       xorl    %ecx,           %ecx
+       pushl   %ebx
+       pushl   %ebp
+       movl    (%esi),         %eax
+       movl    28(%esp),       %ebx
+       movl    4(%esi),        %edi
+
+        
+       roll    $4,             %eax
+       movl    %eax,           %esi
+       xorl    %edi,           %eax
+       andl    $0xf0f0f0f0,    %eax
+       xorl    %eax,           %esi
+       xorl    %eax,           %edi
+
+       roll    $20,            %edi
+       movl    %edi,           %eax
+       xorl    %esi,           %edi
+       andl    $0xfff0000f,    %edi
+       xorl    %edi,           %eax
+       xorl    %edi,           %esi
+
+       roll    $14,            %eax
+       movl    %eax,           %edi
+       xorl    %esi,           %eax
+       andl    $0x33333333,    %eax
+       xorl    %eax,           %edi
+       xorl    %eax,           %esi
+
+       roll    $22,            %esi
+       movl    %esi,           %eax
+       xorl    %edi,           %esi
+       andl    $0x03fc03fc,    %esi
+       xorl    %esi,           %eax
+       xorl    %esi,           %edi
+
+       roll    $9,             %eax
+       movl    %eax,           %esi
+       xorl    %edi,           %eax
+       andl    $0xaaaaaaaa,    %eax
+       xorl    %eax,           %esi
+       xorl    %eax,           %edi
+
+.byte 209
+.byte 199               
+       movl    24(%esp),       %ebp
+       cmpl    $0,             %ebx
+       je      .L000start_decrypt
+
+        
+       movl    (%ebp),         %eax
+       xorl    %ebx,           %ebx
+       movl    4(%ebp),        %edx
+       xorl    %esi,           %eax
+       xorl    %esi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %edi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %edi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %edi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %edi
+
+        
+       movl    8(%ebp),        %eax
+       xorl    %ebx,           %ebx
+       movl    12(%ebp),       %edx
+       xorl    %edi,           %eax
+       xorl    %edi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %esi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %esi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %esi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %esi
+
+        
+       movl    16(%ebp),       %eax
+       xorl    %ebx,           %ebx
+       movl    20(%ebp),       %edx
+       xorl    %esi,           %eax
+       xorl    %esi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %edi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %edi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %edi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %edi
+
+        
+       movl    24(%ebp),       %eax
+       xorl    %ebx,           %ebx
+       movl    28(%ebp),       %edx
+       xorl    %edi,           %eax
+       xorl    %edi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %esi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %esi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %esi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %esi
+
+        
+       movl    32(%ebp),       %eax
+       xorl    %ebx,           %ebx
+       movl    36(%ebp),       %edx
+       xorl    %esi,           %eax
+       xorl    %esi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %edi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %edi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %edi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %edi
+
+        
+       movl    40(%ebp),       %eax
+       xorl    %ebx,           %ebx
+       movl    44(%ebp),       %edx
+       xorl    %edi,           %eax
+       xorl    %edi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %esi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %esi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %esi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %esi
+
+        
+       movl    48(%ebp),       %eax
+       xorl    %ebx,           %ebx
+       movl    52(%ebp),       %edx
+       xorl    %esi,           %eax
+       xorl    %esi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %edi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %edi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %edi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %edi
+
+        
+       movl    56(%ebp),       %eax
+       xorl    %ebx,           %ebx
+       movl    60(%ebp),       %edx
+       xorl    %edi,           %eax
+       xorl    %edi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %esi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %esi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %esi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %esi
+
+        
+       movl    64(%ebp),       %eax
+       xorl    %ebx,           %ebx
+       movl    68(%ebp),       %edx
+       xorl    %esi,           %eax
+       xorl    %esi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %edi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %edi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %edi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %edi
+
+        
+       movl    72(%ebp),       %eax
+       xorl    %ebx,           %ebx
+       movl    76(%ebp),       %edx
+       xorl    %edi,           %eax
+       xorl    %edi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %esi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %esi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %esi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %esi
+
+        
+       movl    80(%ebp),       %eax
+       xorl    %ebx,           %ebx
+       movl    84(%ebp),       %edx
+       xorl    %esi,           %eax
+       xorl    %esi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %edi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %edi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %edi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %edi
+
+        
+       movl    88(%ebp),       %eax
+       xorl    %ebx,           %ebx
+       movl    92(%ebp),       %edx
+       xorl    %edi,           %eax
+       xorl    %edi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %esi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %esi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %esi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %esi
+
+        
+       movl    96(%ebp),       %eax
+       xorl    %ebx,           %ebx
+       movl    100(%ebp),      %edx
+       xorl    %esi,           %eax
+       xorl    %esi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %edi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %edi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %edi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %edi
+
+        
+       movl    104(%ebp),      %eax
+       xorl    %ebx,           %ebx
+       movl    108(%ebp),      %edx
+       xorl    %edi,           %eax
+       xorl    %edi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %esi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %esi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %esi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %esi
+
+        
+       movl    112(%ebp),      %eax
+       xorl    %ebx,           %ebx
+       movl    116(%ebp),      %edx
+       xorl    %esi,           %eax
+       xorl    %esi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %edi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %edi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %edi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %edi
+
+        
+       movl    120(%ebp),      %eax
+       xorl    %ebx,           %ebx
+       movl    124(%ebp),      %edx
+       xorl    %edi,           %eax
+       xorl    %edi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %esi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %esi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %esi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %esi
+       jmp     .L001end
+.L000start_decrypt:
+
+        
+       movl    120(%ebp),      %eax
+       xorl    %ebx,           %ebx
+       movl    124(%ebp),      %edx
+       xorl    %esi,           %eax
+       xorl    %esi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %edi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %edi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %edi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %edi
+
+        
+       movl    112(%ebp),      %eax
+       xorl    %ebx,           %ebx
+       movl    116(%ebp),      %edx
+       xorl    %edi,           %eax
+       xorl    %edi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %esi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %esi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %esi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %esi
+
+        
+       movl    104(%ebp),      %eax
+       xorl    %ebx,           %ebx
+       movl    108(%ebp),      %edx
+       xorl    %esi,           %eax
+       xorl    %esi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %edi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %edi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %edi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %edi
+
+        
+       movl    96(%ebp),       %eax
+       xorl    %ebx,           %ebx
+       movl    100(%ebp),      %edx
+       xorl    %edi,           %eax
+       xorl    %edi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %esi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %esi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %esi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %esi
+
+        
+       movl    88(%ebp),       %eax
+       xorl    %ebx,           %ebx
+       movl    92(%ebp),       %edx
+       xorl    %esi,           %eax
+       xorl    %esi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %edi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %edi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %edi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %edi
+
+        
+       movl    80(%ebp),       %eax
+       xorl    %ebx,           %ebx
+       movl    84(%ebp),       %edx
+       xorl    %edi,           %eax
+       xorl    %edi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %esi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %esi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %esi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %esi
+
+        
+       movl    72(%ebp),       %eax
+       xorl    %ebx,           %ebx
+       movl    76(%ebp),       %edx
+       xorl    %esi,           %eax
+       xorl    %esi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %edi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %edi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %edi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %edi
+
+        
+       movl    64(%ebp),       %eax
+       xorl    %ebx,           %ebx
+       movl    68(%ebp),       %edx
+       xorl    %edi,           %eax
+       xorl    %edi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %esi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %esi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %esi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %esi
+
+        
+       movl    56(%ebp),       %eax
+       xorl    %ebx,           %ebx
+       movl    60(%ebp),       %edx
+       xorl    %esi,           %eax
+       xorl    %esi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %edi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %edi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %edi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %edi
+
+        
+       movl    48(%ebp),       %eax
+       xorl    %ebx,           %ebx
+       movl    52(%ebp),       %edx
+       xorl    %edi,           %eax
+       xorl    %edi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %esi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %esi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %esi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %esi
+
+        
+       movl    40(%ebp),       %eax
+       xorl    %ebx,           %ebx
+       movl    44(%ebp),       %edx
+       xorl    %esi,           %eax
+       xorl    %esi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %edi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %edi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %edi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %edi
+
+        
+       movl    32(%ebp),       %eax
+       xorl    %ebx,           %ebx
+       movl    36(%ebp),       %edx
+       xorl    %edi,           %eax
+       xorl    %edi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %esi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %esi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %esi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %esi
+
+        
+       movl    24(%ebp),       %eax
+       xorl    %ebx,           %ebx
+       movl    28(%ebp),       %edx
+       xorl    %esi,           %eax
+       xorl    %esi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %edi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %edi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %edi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %edi
+
+        
+       movl    16(%ebp),       %eax
+       xorl    %ebx,           %ebx
+       movl    20(%ebp),       %edx
+       xorl    %edi,           %eax
+       xorl    %edi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %esi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %esi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %esi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %esi
+
+        
+       movl    8(%ebp),        %eax
+       xorl    %ebx,           %ebx
+       movl    12(%ebp),       %edx
+       xorl    %esi,           %eax
+       xorl    %esi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %edi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %edi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %edi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %edi
+
+        
+       movl    (%ebp),         %eax
+       xorl    %ebx,           %ebx
+       movl    4(%ebp),        %edx
+       xorl    %edi,           %eax
+       xorl    %edi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %esi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %esi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %esi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %esi
+.L001end:
+
+        
+       movl    20(%esp),       %edx
+.byte 209
+.byte 206               
+       movl    %edi,           %eax
+       xorl    %esi,           %edi
+       andl    $0xaaaaaaaa,    %edi
+       xorl    %edi,           %eax
+       xorl    %edi,           %esi
+
+       roll    $23,            %eax
+       movl    %eax,           %edi
+       xorl    %esi,           %eax
+       andl    $0x03fc03fc,    %eax
+       xorl    %eax,           %edi
+       xorl    %eax,           %esi
+
+       roll    $10,            %edi
+       movl    %edi,           %eax
+       xorl    %esi,           %edi
+       andl    $0x33333333,    %edi
+       xorl    %edi,           %eax
+       xorl    %edi,           %esi
+
+       roll    $18,            %esi
+       movl    %esi,           %edi
+       xorl    %eax,           %esi
+       andl    $0xfff0000f,    %esi
+       xorl    %esi,           %edi
+       xorl    %esi,           %eax
+
+       roll    $12,            %edi
+       movl    %edi,           %esi
+       xorl    %eax,           %edi
+       andl    $0xf0f0f0f0,    %edi
+       xorl    %edi,           %esi
+       xorl    %edi,           %eax
+
+       rorl    $4,             %eax
+       movl    %eax,           (%edx)
+       movl    %esi,           4(%edx)
+       popl    %ebp
+       popl    %ebx
+       popl    %edi
+       popl    %esi
+       ret
+.des_encrypt_end:
+       .size    des_encrypt , .des_encrypt_end-des_encrypt  
+.ident "desasm.pl"
+.text
+       .align 16 
+.globl des_encrypt2
+       .type    des_encrypt2 , @function  
+des_encrypt2:
+       pushl   %esi
+       pushl   %edi
+
+        
+       movl    12(%esp),       %eax
+       xorl    %ecx,           %ecx
+       pushl   %ebx
+       pushl   %ebp
+       movl    (%eax),         %esi
+       movl    28(%esp),       %ebx
+       roll    $3,             %esi
+       movl    4(%eax),        %edi
+       roll    $3,             %edi
+       movl    24(%esp),       %ebp
+       cmpl    $0,             %ebx
+       je      .L002start_decrypt
+
+        
+       movl    (%ebp),         %eax
+       xorl    %ebx,           %ebx
+       movl    4(%ebp),        %edx
+       xorl    %esi,           %eax
+       xorl    %esi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %edi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %edi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %edi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %edi
+
+        
+       movl    8(%ebp),        %eax
+       xorl    %ebx,           %ebx
+       movl    12(%ebp),       %edx
+       xorl    %edi,           %eax
+       xorl    %edi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %esi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %esi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %esi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %esi
+
+        
+       movl    16(%ebp),       %eax
+       xorl    %ebx,           %ebx
+       movl    20(%ebp),       %edx
+       xorl    %esi,           %eax
+       xorl    %esi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %edi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %edi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %edi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %edi
+
+        
+       movl    24(%ebp),       %eax
+       xorl    %ebx,           %ebx
+       movl    28(%ebp),       %edx
+       xorl    %edi,           %eax
+       xorl    %edi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %esi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %esi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %esi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %esi
+
+        
+       movl    32(%ebp),       %eax
+       xorl    %ebx,           %ebx
+       movl    36(%ebp),       %edx
+       xorl    %esi,           %eax
+       xorl    %esi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %edi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %edi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %edi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %edi
+
+        
+       movl    40(%ebp),       %eax
+       xorl    %ebx,           %ebx
+       movl    44(%ebp),       %edx
+       xorl    %edi,           %eax
+       xorl    %edi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %esi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %esi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %esi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %esi
+
+        
+       movl    48(%ebp),       %eax
+       xorl    %ebx,           %ebx
+       movl    52(%ebp),       %edx
+       xorl    %esi,           %eax
+       xorl    %esi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %edi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %edi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %edi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %edi
+
+        
+       movl    56(%ebp),       %eax
+       xorl    %ebx,           %ebx
+       movl    60(%ebp),       %edx
+       xorl    %edi,           %eax
+       xorl    %edi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %esi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %esi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %esi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %esi
+
+        
+       movl    64(%ebp),       %eax
+       xorl    %ebx,           %ebx
+       movl    68(%ebp),       %edx
+       xorl    %esi,           %eax
+       xorl    %esi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %edi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %edi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %edi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %edi
+
+        
+       movl    72(%ebp),       %eax
+       xorl    %ebx,           %ebx
+       movl    76(%ebp),       %edx
+       xorl    %edi,           %eax
+       xorl    %edi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %esi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %esi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %esi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %esi
+
+        
+       movl    80(%ebp),       %eax
+       xorl    %ebx,           %ebx
+       movl    84(%ebp),       %edx
+       xorl    %esi,           %eax
+       xorl    %esi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %edi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %edi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %edi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %edi
+
+        
+       movl    88(%ebp),       %eax
+       xorl    %ebx,           %ebx
+       movl    92(%ebp),       %edx
+       xorl    %edi,           %eax
+       xorl    %edi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %esi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %esi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %esi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %esi
+
+        
+       movl    96(%ebp),       %eax
+       xorl    %ebx,           %ebx
+       movl    100(%ebp),      %edx
+       xorl    %esi,           %eax
+       xorl    %esi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %edi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %edi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %edi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %edi
+
+        
+       movl    104(%ebp),      %eax
+       xorl    %ebx,           %ebx
+       movl    108(%ebp),      %edx
+       xorl    %edi,           %eax
+       xorl    %edi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %esi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %esi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %esi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %esi
+
+        
+       movl    112(%ebp),      %eax
+       xorl    %ebx,           %ebx
+       movl    116(%ebp),      %edx
+       xorl    %esi,           %eax
+       xorl    %esi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %edi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %edi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %edi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %edi
+
+        
+       movl    120(%ebp),      %eax
+       xorl    %ebx,           %ebx
+       movl    124(%ebp),      %edx
+       xorl    %edi,           %eax
+       xorl    %edi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %esi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %esi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %esi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %esi
+       jmp     .L003end
+.L002start_decrypt:
+
+        
+       movl    120(%ebp),      %eax
+       xorl    %ebx,           %ebx
+       movl    124(%ebp),      %edx
+       xorl    %esi,           %eax
+       xorl    %esi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %edi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %edi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %edi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %edi
+
+        
+       movl    112(%ebp),      %eax
+       xorl    %ebx,           %ebx
+       movl    116(%ebp),      %edx
+       xorl    %edi,           %eax
+       xorl    %edi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %esi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %esi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %esi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %esi
+
+        
+       movl    104(%ebp),      %eax
+       xorl    %ebx,           %ebx
+       movl    108(%ebp),      %edx
+       xorl    %esi,           %eax
+       xorl    %esi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %edi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %edi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %edi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %edi
+
+        
+       movl    96(%ebp),       %eax
+       xorl    %ebx,           %ebx
+       movl    100(%ebp),      %edx
+       xorl    %edi,           %eax
+       xorl    %edi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %esi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %esi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %esi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %esi
+
+        
+       movl    88(%ebp),       %eax
+       xorl    %ebx,           %ebx
+       movl    92(%ebp),       %edx
+       xorl    %esi,           %eax
+       xorl    %esi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %edi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %edi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %edi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %edi
+
+        
+       movl    80(%ebp),       %eax
+       xorl    %ebx,           %ebx
+       movl    84(%ebp),       %edx
+       xorl    %edi,           %eax
+       xorl    %edi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %esi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %esi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %esi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %esi
+
+        
+       movl    72(%ebp),       %eax
+       xorl    %ebx,           %ebx
+       movl    76(%ebp),       %edx
+       xorl    %esi,           %eax
+       xorl    %esi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %edi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %edi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %edi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %edi
+
+        
+       movl    64(%ebp),       %eax
+       xorl    %ebx,           %ebx
+       movl    68(%ebp),       %edx
+       xorl    %edi,           %eax
+       xorl    %edi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %esi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %esi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %esi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %esi
+
+        
+       movl    56(%ebp),       %eax
+       xorl    %ebx,           %ebx
+       movl    60(%ebp),       %edx
+       xorl    %esi,           %eax
+       xorl    %esi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %edi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %edi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %edi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %edi
+
+        
+       movl    48(%ebp),       %eax
+       xorl    %ebx,           %ebx
+       movl    52(%ebp),       %edx
+       xorl    %edi,           %eax
+       xorl    %edi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %esi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %esi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %esi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %esi
+
+        
+       movl    40(%ebp),       %eax
+       xorl    %ebx,           %ebx
+       movl    44(%ebp),       %edx
+       xorl    %esi,           %eax
+       xorl    %esi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %edi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %edi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %edi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %edi
+
+        
+       movl    32(%ebp),       %eax
+       xorl    %ebx,           %ebx
+       movl    36(%ebp),       %edx
+       xorl    %edi,           %eax
+       xorl    %edi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %esi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %esi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %esi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %esi
+
+        
+       movl    24(%ebp),       %eax
+       xorl    %ebx,           %ebx
+       movl    28(%ebp),       %edx
+       xorl    %esi,           %eax
+       xorl    %esi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %edi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %edi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %edi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %edi
+
+        
+       movl    16(%ebp),       %eax
+       xorl    %ebx,           %ebx
+       movl    20(%ebp),       %edx
+       xorl    %edi,           %eax
+       xorl    %edi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %esi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %esi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %esi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %esi
+
+        
+       movl    8(%ebp),        %eax
+       xorl    %ebx,           %ebx
+       movl    12(%ebp),       %edx
+       xorl    %esi,           %eax
+       xorl    %esi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %edi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %edi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %edi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %edi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %edi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %edi
+
+        
+       movl    (%ebp),         %eax
+       xorl    %ebx,           %ebx
+       movl    4(%ebp),        %edx
+       xorl    %edi,           %eax
+       xorl    %edi,           %edx
+       andl    $0xfcfcfcfc,    %eax
+       andl    $0xcfcfcfcf,    %edx
+       movb    %al,            %bl
+       movb    %ah,            %cl
+       rorl    $4,             %edx
+       movl          des_SPtrans(%ebx),%ebp
+       movb    %dl,            %bl
+       xorl    %ebp,           %esi
+       movl    0x200+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movb    %dh,            %cl
+       shrl    $16,            %eax
+       movl    0x100+des_SPtrans(%ebx),%ebp
+       xorl    %ebp,           %esi
+       movb    %ah,            %bl
+       shrl    $16,            %edx
+       movl    0x300+des_SPtrans(%ecx),%ebp
+       xorl    %ebp,           %esi
+       movl    24(%esp),       %ebp
+       movb    %dh,            %cl
+       andl    $0xff,          %eax
+       andl    $0xff,          %edx
+       movl    0x600+des_SPtrans(%ebx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x700+des_SPtrans(%ecx),%ebx
+       xorl    %ebx,           %esi
+       movl    0x400+des_SPtrans(%eax),%ebx
+       xorl    %ebx,           %esi
+       movl    0x500+des_SPtrans(%edx),%ebx
+       xorl    %ebx,           %esi
+.L003end:
+
+        
+       rorl    $3,             %edi
+       movl    20(%esp),       %eax
+       rorl    $3,             %esi
+       movl    %edi,           (%eax)
+       movl    %esi,           4(%eax)
+       popl    %ebp
+       popl    %ebx
+       popl    %edi
+       popl    %esi
+       ret
+.des_encrypt2_end:
+       .size    des_encrypt2 , .des_encrypt2_end-des_encrypt2  
+.ident "desasm.pl"
+.text
+       .align 16 
+.globl des_encrypt3
+       .type    des_encrypt3 , @function  
+des_encrypt3:
+       pushl   %ebx
+       movl    8(%esp),        %ebx
+       pushl   %ebp
+       pushl   %esi
+       pushl   %edi
+
+        
+       movl    (%ebx),         %edi
+       movl    4(%ebx),        %esi
+       subl    $12,            %esp
+
+        
+       roll    $4,             %edi
+       movl    %edi,           %edx
+       xorl    %esi,           %edi
+       andl    $0xf0f0f0f0,    %edi
+       xorl    %edi,           %edx
+       xorl    %edi,           %esi
+
+       roll    $20,            %esi
+       movl    %esi,           %edi
+       xorl    %edx,           %esi
+       andl    $0xfff0000f,    %esi
+       xorl    %esi,           %edi
+       xorl    %esi,           %edx
+
+       roll    $14,            %edi
+       movl    %edi,           %esi
+       xorl    %edx,           %edi
+       andl    $0x33333333,    %edi
+       xorl    %edi,           %esi
+       xorl    %edi,           %edx
+
+       roll    $22,            %edx
+       movl    %edx,           %edi
+       xorl    %esi,           %edx
+       andl    $0x03fc03fc,    %edx
+       xorl    %edx,           %edi
+       xorl    %edx,           %esi
+
+       roll    $9,             %edi
+       movl    %edi,           %edx
+       xorl    %esi,           %edi
+       andl    $0xaaaaaaaa,    %edi
+       xorl    %edi,           %edx
+       xorl    %edi,           %esi
+
+       rorl    $3,             %edx
+       rorl    $2,             %esi
+       movl    %esi,           4(%ebx)
+       movl    36(%esp),       %eax
+       movl    %edx,           (%ebx)
+       movl    40(%esp),       %edi
+       movl    44(%esp),       %esi
+       movl    $1,             8(%esp)
+       movl    %eax,           4(%esp)
+       movl    %ebx,           (%esp)
+       call    des_encrypt2
+       movl    $0,             8(%esp)
+       movl    %edi,           4(%esp)
+       movl    %ebx,           (%esp)
+       call    des_encrypt2
+       movl    $1,             8(%esp)
+       movl    %esi,           4(%esp)
+       movl    %ebx,           (%esp)
+       call    des_encrypt2
+       addl    $12,            %esp
+       movl    (%ebx),         %edi
+       movl    4(%ebx),        %esi
+
+        
+       roll    $2,             %esi
+       roll    $3,             %edi
+       movl    %edi,           %eax
+       xorl    %esi,           %edi
+       andl    $0xaaaaaaaa,    %edi
+       xorl    %edi,           %eax
+       xorl    %edi,           %esi
+
+       roll    $23,            %eax
+       movl    %eax,           %edi
+       xorl    %esi,           %eax
+       andl    $0x03fc03fc,    %eax
+       xorl    %eax,           %edi
+       xorl    %eax,           %esi
+
+       roll    $10,            %edi
+       movl    %edi,           %eax
+       xorl    %esi,           %edi
+       andl    $0x33333333,    %edi
+       xorl    %edi,           %eax
+       xorl    %edi,           %esi
+
+       roll    $18,            %esi
+       movl    %esi,           %edi
+       xorl    %eax,           %esi
+       andl    $0xfff0000f,    %esi
+       xorl    %esi,           %edi
+       xorl    %esi,           %eax
+
+       roll    $12,            %edi
+       movl    %edi,           %esi
+       xorl    %eax,           %edi
+       andl    $0xf0f0f0f0,    %edi
+       xorl    %edi,           %esi
+       xorl    %edi,           %eax
+
+       rorl    $4,             %eax
+       movl    %eax,           (%ebx)
+       movl    %esi,           4(%ebx)
+       popl    %edi
+       popl    %esi
+       popl    %ebp
+       popl    %ebx
+       ret
+.des_encrypt3_end:
+       .size    des_encrypt3 , .des_encrypt3_end-des_encrypt3  
+.ident "desasm.pl"
+.text
+       .align 16 
+.globl des_decrypt3
+       .type    des_decrypt3 , @function  
+des_decrypt3:
+       pushl   %ebx
+       movl    8(%esp),        %ebx
+       pushl   %ebp
+       pushl   %esi
+       pushl   %edi
+
+        
+       movl    (%ebx),         %edi
+       movl    4(%ebx),        %esi
+       subl    $12,            %esp
+
+        
+       roll    $4,             %edi
+       movl    %edi,           %edx
+       xorl    %esi,           %edi
+       andl    $0xf0f0f0f0,    %edi
+       xorl    %edi,           %edx
+       xorl    %edi,           %esi
+
+       roll    $20,            %esi
+       movl    %esi,           %edi
+       xorl    %edx,           %esi
+       andl    $0xfff0000f,    %esi
+       xorl    %esi,           %edi
+       xorl    %esi,           %edx
+
+       roll    $14,            %edi
+       movl    %edi,           %esi
+       xorl    %edx,           %edi
+       andl    $0x33333333,    %edi
+       xorl    %edi,           %esi
+       xorl    %edi,           %edx
+
+       roll    $22,            %edx
+       movl    %edx,           %edi
+       xorl    %esi,           %edx
+       andl    $0x03fc03fc,    %edx
+       xorl    %edx,           %edi
+       xorl    %edx,           %esi
+
+       roll    $9,             %edi
+       movl    %edi,           %edx
+       xorl    %esi,           %edi
+       andl    $0xaaaaaaaa,    %edi
+       xorl    %edi,           %edx
+       xorl    %edi,           %esi
+
+       rorl    $3,             %edx
+       rorl    $2,             %esi
+       movl    %esi,           4(%ebx)
+       movl    36(%esp),       %esi
+       movl    %edx,           (%ebx)
+       movl    40(%esp),       %edi
+       movl    44(%esp),       %eax
+       movl    $0,             8(%esp)
+       movl    %eax,           4(%esp)
+       movl    %ebx,           (%esp)
+       call    des_encrypt2
+       movl    $1,             8(%esp)
+       movl    %edi,           4(%esp)
+       movl    %ebx,           (%esp)
+       call    des_encrypt2
+       movl    $0,             8(%esp)
+       movl    %esi,           4(%esp)
+       movl    %ebx,           (%esp)
+       call    des_encrypt2
+       addl    $12,            %esp
+       movl    (%ebx),         %edi
+       movl    4(%ebx),        %esi
+
+        
+       roll    $2,             %esi
+       roll    $3,             %edi
+       movl    %edi,           %eax
+       xorl    %esi,           %edi
+       andl    $0xaaaaaaaa,    %edi
+       xorl    %edi,           %eax
+       xorl    %edi,           %esi
+
+       roll    $23,            %eax
+       movl    %eax,           %edi
+       xorl    %esi,           %eax
+       andl    $0x03fc03fc,    %eax
+       xorl    %eax,           %edi
+       xorl    %eax,           %esi
+
+       roll    $10,            %edi
+       movl    %edi,           %eax
+       xorl    %esi,           %edi
+       andl    $0x33333333,    %edi
+       xorl    %edi,           %eax
+       xorl    %edi,           %esi
+
+       roll    $18,            %esi
+       movl    %esi,           %edi
+       xorl    %eax,           %esi
+       andl    $0xfff0000f,    %esi
+       xorl    %esi,           %edi
+       xorl    %esi,           %eax
+
+       roll    $12,            %edi
+       movl    %edi,           %esi
+       xorl    %eax,           %edi
+       andl    $0xf0f0f0f0,    %edi
+       xorl    %edi,           %esi
+       xorl    %edi,           %eax
+
+       rorl    $4,             %eax
+       movl    %eax,           (%ebx)
+       movl    %esi,           4(%ebx)
+       popl    %edi
+       popl    %esi
+       popl    %ebp
+       popl    %ebx
+       ret
+.des_decrypt3_end:
+       .size    des_decrypt3 , .des_decrypt3_end-des_decrypt3  
+.ident "desasm.pl"
+.text
+       .align 16 
+.globl des_ncbc_encrypt
+       .type    des_ncbc_encrypt , @function  
+des_ncbc_encrypt:
+
+       pushl   %ebp
+       pushl   %ebx
+       pushl   %esi
+       pushl   %edi
+       movl    28(%esp),       %ebp
+        
+       movl    36(%esp),       %ebx
+       movl    (%ebx),         %esi
+       movl    4(%ebx),        %edi
+       pushl   %edi
+       pushl   %esi
+       pushl   %edi
+       pushl   %esi
+       movl    %esp,           %ebx
+       movl    36(%esp),       %esi
+       movl    40(%esp),       %edi
+        
+       movl    56(%esp),       %ecx
+        
+       pushl   %ecx
+        
+       movl    52(%esp),       %eax
+       pushl   %eax
+       pushl   %ebx
+       cmpl    $0,             %ecx
+       jz      .L004decrypt
+       andl    $4294967288,    %ebp
+       movl    12(%esp),       %eax
+       movl    16(%esp),       %ebx
+       jz      .L005encrypt_finish
+.L006encrypt_loop:
+       movl    (%esi),         %ecx
+       movl    4(%esi),        %edx
+       xorl    %ecx,           %eax
+       xorl    %edx,           %ebx
+       movl    %eax,           12(%esp)
+       movl    %ebx,           16(%esp)
+       call    des_encrypt
+       movl    12(%esp),       %eax
+       movl    16(%esp),       %ebx
+       movl    %eax,           (%edi)
+       movl    %ebx,           4(%edi)
+       addl    $8,             %esi
+       addl    $8,             %edi
+       subl    $8,             %ebp
+       jnz     .L006encrypt_loop
+.L005encrypt_finish:
+       movl    56(%esp),       %ebp
+       andl    $7,             %ebp
+       jz      .L007finish
+       xorl    %ecx,           %ecx
+       xorl    %edx,           %edx
+       movl    .L008cbc_enc_jmp_table(,%ebp,4),%ebp
+       jmp     *%ebp
+.L009ej7:
+       movb    6(%esi),        %dh
+       sall    $8,             %edx
+.L010ej6:
+       movb    5(%esi),        %dh
+.L011ej5:
+       movb    4(%esi),        %dl
+.L012ej4:
+       movl    (%esi),         %ecx
+       jmp     .L013ejend
+.L014ej3:
+       movb    2(%esi),        %ch
+       sall    $8,             %ecx
+.L015ej2:
+       movb    1(%esi),        %ch
+.L016ej1:
+       movb    (%esi),         %cl
+.L013ejend:
+       xorl    %ecx,           %eax
+       xorl    %edx,           %ebx
+       movl    %eax,           12(%esp)
+       movl    %ebx,           16(%esp)
+       call    des_encrypt
+       movl    12(%esp),       %eax
+       movl    16(%esp),       %ebx
+       movl    %eax,           (%edi)
+       movl    %ebx,           4(%edi)
+       jmp     .L007finish
+.align 16 
+.L004decrypt:
+       andl    $4294967288,    %ebp
+       movl    20(%esp),       %eax
+       movl    24(%esp),       %ebx
+       jz      .L017decrypt_finish
+.L018decrypt_loop:
+       movl    (%esi),         %eax
+       movl    4(%esi),        %ebx
+       movl    %eax,           12(%esp)
+       movl    %ebx,           16(%esp)
+       call    des_encrypt
+       movl    12(%esp),       %eax
+       movl    16(%esp),       %ebx
+       movl    20(%esp),       %ecx
+       movl    24(%esp),       %edx
+       xorl    %eax,           %ecx
+       xorl    %ebx,           %edx
+       movl    (%esi),         %eax
+       movl    4(%esi),        %ebx
+       movl    %ecx,           (%edi)
+       movl    %edx,           4(%edi)
+       movl    %eax,           20(%esp)
+       movl    %ebx,           24(%esp)
+       addl    $8,             %esi
+       addl    $8,             %edi
+       subl    $8,             %ebp
+       jnz     .L018decrypt_loop
+.L017decrypt_finish:
+       movl    56(%esp),       %ebp
+       andl    $7,             %ebp
+       jz      .L007finish
+       movl    (%esi),         %eax
+       movl    4(%esi),        %ebx
+       movl    %eax,           12(%esp)
+       movl    %ebx,           16(%esp)
+       call    des_encrypt
+       movl    12(%esp),       %eax
+       movl    16(%esp),       %ebx
+       movl    20(%esp),       %ecx
+       movl    24(%esp),       %edx
+       xorl    %eax,           %ecx
+       xorl    %ebx,           %edx
+       movl    (%esi),         %eax
+       movl    4(%esi),        %ebx
+.L019dj7:
+       rorl    $16,            %edx
+       movb    %dl,            6(%edi)
+       shrl    $16,            %edx
+.L020dj6:
+       movb    %dh,            5(%edi)
+.L021dj5:
+       movb    %dl,            4(%edi)
+.L022dj4:
+       movl    %ecx,           (%edi)
+       jmp     .L023djend
+.L024dj3:
+       rorl    $16,            %ecx
+       movb    %cl,            2(%edi)
+       sall    $16,            %ecx
+.L025dj2:
+       movb    %ch,            1(%esi)
+.L026dj1:
+       movb    %cl,            (%esi)
+.L023djend:
+       jmp     .L007finish
+.align 16 
+.L007finish:
+       movl    64(%esp),       %ecx
+       addl    $28,            %esp
+       movl    %eax,           (%ecx)
+       movl    %ebx,           4(%ecx)
+       popl    %edi
+       popl    %esi
+       popl    %ebx
+       popl    %ebp
+       ret
+.align 16 
+.L008cbc_enc_jmp_table:
+       .long 0
+       .long .L016ej1
+       .long .L015ej2
+       .long .L014ej3
+       .long .L012ej4
+       .long .L011ej5
+       .long .L010ej6
+       .long .L009ej7
+.align 16 
+.L027cbc_dec_jmp_table:
+       .long 0
+       .long .L026dj1
+       .long .L025dj2
+       .long .L024dj3
+       .long .L022dj4
+       .long .L021dj5
+       .long .L020dj6
+       .long .L019dj7
+.des_ncbc_encrypt_end:
+       .size    des_ncbc_encrypt , .des_ncbc_encrypt_end-des_ncbc_encrypt  
+.ident "desasm.pl"
+.text
+       .align 16 
+.globl des_ede3_cbc_encrypt
+       .type    des_ede3_cbc_encrypt , @function  
+des_ede3_cbc_encrypt:
+
+       pushl   %ebp
+       pushl   %ebx
+       pushl   %esi
+       pushl   %edi
+       movl    28(%esp),       %ebp
+        
+       movl    44(%esp),       %ebx
+       movl    (%ebx),         %esi
+       movl    4(%ebx),        %edi
+       pushl   %edi
+       pushl   %esi
+       pushl   %edi
+       pushl   %esi
+       movl    %esp,           %ebx
+       movl    36(%esp),       %esi
+       movl    40(%esp),       %edi
+        
+       movl    64(%esp),       %ecx
+        
+       movl    56(%esp),       %eax
+       pushl   %eax
+        
+       movl    56(%esp),       %eax
+       pushl   %eax
+        
+       movl    56(%esp),       %eax
+       pushl   %eax
+       pushl   %ebx
+       cmpl    $0,             %ecx
+       jz      .L028decrypt
+       andl    $4294967288,    %ebp
+       movl    16(%esp),       %eax
+       movl    20(%esp),       %ebx
+       jz      .L029encrypt_finish
+.L030encrypt_loop:
+       movl    (%esi),         %ecx
+       movl    4(%esi),        %edx
+       xorl    %ecx,           %eax
+       xorl    %edx,           %ebx
+       movl    %eax,           16(%esp)
+       movl    %ebx,           20(%esp)
+       call    des_encrypt3
+       movl    16(%esp),       %eax
+       movl    20(%esp),       %ebx
+       movl    %eax,           (%edi)
+       movl    %ebx,           4(%edi)
+       addl    $8,             %esi
+       addl    $8,             %edi
+       subl    $8,             %ebp
+       jnz     .L030encrypt_loop
+.L029encrypt_finish:
+       movl    60(%esp),       %ebp
+       andl    $7,             %ebp
+       jz      .L031finish
+       xorl    %ecx,           %ecx
+       xorl    %edx,           %edx
+       movl    .L032cbc_enc_jmp_table(,%ebp,4),%ebp
+       jmp     *%ebp
+.L033ej7:
+       movb    6(%esi),        %dh
+       sall    $8,             %edx
+.L034ej6:
+       movb    5(%esi),        %dh
+.L035ej5:
+       movb    4(%esi),        %dl
+.L036ej4:
+       movl    (%esi),         %ecx
+       jmp     .L037ejend
+.L038ej3:
+       movb    2(%esi),        %ch
+       sall    $8,             %ecx
+.L039ej2:
+       movb    1(%esi),        %ch
+.L040ej1:
+       movb    (%esi),         %cl
+.L037ejend:
+       xorl    %ecx,           %eax
+       xorl    %edx,           %ebx
+       movl    %eax,           16(%esp)
+       movl    %ebx,           20(%esp)
+       call    des_encrypt3
+       movl    16(%esp),       %eax
+       movl    20(%esp),       %ebx
+       movl    %eax,           (%edi)
+       movl    %ebx,           4(%edi)
+       jmp     .L031finish
+.align 16 
+.L028decrypt:
+       andl    $4294967288,    %ebp
+       movl    24(%esp),       %eax
+       movl    28(%esp),       %ebx
+       jz      .L041decrypt_finish
+.L042decrypt_loop:
+       movl    (%esi),         %eax
+       movl    4(%esi),        %ebx
+       movl    %eax,           16(%esp)
+       movl    %ebx,           20(%esp)
+       call    des_decrypt3
+       movl    16(%esp),       %eax
+       movl    20(%esp),       %ebx
+       movl    24(%esp),       %ecx
+       movl    28(%esp),       %edx
+       xorl    %eax,           %ecx
+       xorl    %ebx,           %edx
+       movl    (%esi),         %eax
+       movl    4(%esi),        %ebx
+       movl    %ecx,           (%edi)
+       movl    %edx,           4(%edi)
+       movl    %eax,           24(%esp)
+       movl    %ebx,           28(%esp)
+       addl    $8,             %esi
+       addl    $8,             %edi
+       subl    $8,             %ebp
+       jnz     .L042decrypt_loop
+.L041decrypt_finish:
+       movl    60(%esp),       %ebp
+       andl    $7,             %ebp
+       jz      .L031finish
+       movl    (%esi),         %eax
+       movl    4(%esi),        %ebx
+       movl    %eax,           16(%esp)
+       movl    %ebx,           20(%esp)
+       call    des_decrypt3
+       movl    16(%esp),       %eax
+       movl    20(%esp),       %ebx
+       movl    24(%esp),       %ecx
+       movl    28(%esp),       %edx
+       xorl    %eax,           %ecx
+       xorl    %ebx,           %edx
+       movl    (%esi),         %eax
+       movl    4(%esi),        %ebx
+.L043dj7:
+       rorl    $16,            %edx
+       movb    %dl,            6(%edi)
+       shrl    $16,            %edx
+.L044dj6:
+       movb    %dh,            5(%edi)
+.L045dj5:
+       movb    %dl,            4(%edi)
+.L046dj4:
+       movl    %ecx,           (%edi)
+       jmp     .L047djend
+.L048dj3:
+       rorl    $16,            %ecx
+       movb    %cl,            2(%edi)
+       sall    $16,            %ecx
+.L049dj2:
+       movb    %ch,            1(%esi)
+.L050dj1:
+       movb    %cl,            (%esi)
+.L047djend:
+       jmp     .L031finish
+.align 16 
+.L031finish:
+       movl    76(%esp),       %ecx
+       addl    $32,            %esp
+       movl    %eax,           (%ecx)
+       movl    %ebx,           4(%ecx)
+       popl    %edi
+       popl    %esi
+       popl    %ebx
+       popl    %ebp
+       ret
+.align 16 
+.L032cbc_enc_jmp_table:
+       .long 0
+       .long .L040ej1
+       .long .L039ej2
+       .long .L038ej3
+       .long .L036ej4
+       .long .L035ej5
+       .long .L034ej6
+       .long .L033ej7
+.align 16 
+.L051cbc_dec_jmp_table:
+       .long 0
+       .long .L050dj1
+       .long .L049dj2
+       .long .L048dj3
+       .long .L046dj4
+       .long .L045dj5
+       .long .L044dj6
+       .long .L043dj7
+.des_ede3_cbc_encrypt_end:
+       .size    des_ede3_cbc_encrypt , .des_ede3_cbc_encrypt_end-des_ede3_cbc_encrypt  
+.ident "desasm.pl"
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/des/ecb_enc.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,128 @@
+/* crypto/des/ecb_enc.c */
+/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+#include "des/des_locl.h"
+#include "des/spr.h"
+
+char *libdes_version="libdes v 3.24 - 20-Apr-1996 - eay";
+char *DES_version="DES part of SSLeay 0.8.2b 08-Jan-1998";
+
+/* RCSID $Id: ecb_enc.c,v 1.8 2004-08-04 15:57:22 mcr Exp $ */
+/* This function ifdef'ed out for FreeS/WAN project. */
+#ifdef notdef
+char *des_options()
+       {
+       static int init=1;
+       static char buf[32];
+
+       if (init)
+               {
+               char *ptr,*unroll,*risc,*size;
+
+               init=0;
+#ifdef DES_PTR
+               ptr="ptr";
+#else
+               ptr="idx";
+#endif
+#if defined(DES_RISC1) || defined(DES_RISC2)
+#ifdef DES_RISC1
+               risc="risc1";
+#endif
+#ifdef DES_RISC2
+               risc="risc2";
+#endif
+#else
+               risc="cisc";
+#endif
+#ifdef DES_UNROLL
+               unroll="16";
+#else
+               unroll="4";
+#endif
+               if (sizeof(DES_LONG) != sizeof(long))
+                       size="int";
+               else
+                       size="long";
+               sprintf(buf,"des(%s,%s,%s,%s)",ptr,risc,unroll,size);
+               }
+       return(buf);
+       }
+#endif
+               
+
+void des_ecb_encrypt(input, output, ks, enc)
+des_cblock (*input);
+des_cblock (*output);
+des_key_schedule ks;
+int enc;
+       {
+       register DES_LONG l;
+       register unsigned char *in,*out;
+       DES_LONG ll[2];
+
+       in=(unsigned char *)input;
+       out=(unsigned char *)output;
+       c2l(in,l); ll[0]=l;
+       c2l(in,l); ll[1]=l;
+       des_encrypt(ll,ks,enc);
+       l=ll[0]; l2c(l,out);
+       l=ll[1]; l2c(l,out);
+       l=ll[0]=ll[1]=0;
+       }
+
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/des/ipsec_alg_3des.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,181 @@
+/*
+ * ipsec_alg 3DES cipher stubs
+ *
+ * Copyright (C) 2005 Michael Richardson <mcr@xelerance.com> 
+ *
+ * Adapted from ipsec_alg_aes.c by JuanJo Ciarlante <jjo-ipsec@mendoza.gov.ar>
+ * 
+ * ipsec_alg_aes.c,v 1.1.2.1 2003/11/21 18:12:23 jjo Exp
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ */
+#ifndef AUTOCONF_INCLUDED
+#include <linux/config.h>
+#endif
+#include <linux/version.h>
+
+/*     
+ *     special case: ipsec core modular with this static algo inside:
+ *     must avoid MODULE magic for this file
+ */
+#if defined(CONFIG_KLIPS_MODULE) && defined(CONFIG_KLIPS_ENC_3DES)
+#undef MODULE
+#endif
+
+#include <linux/module.h>
+#include <linux/init.h>
+
+#include <linux/kernel.h> /* printk() */
+#include <linux/errno.h>  /* error codes */
+#include <linux/types.h>  /* size_t */
+#include <linux/string.h>
+
+/*     Low freeswan header coupling    */
+#include "openswan/ipsec_xform.h"
+#include "openswan/ipsec_alg.h"
+#include "crypto/des.h"
+#include "openswan/ipsec_alg_3des.h"
+
+#define AES_CONTEXT_T aes_context
+static int debug_3des=0;
+static int test_3des=0;
+static int excl_3des=0;
+
+#if defined(CONFIG_KLIPS_ENC_3DES_MODULE)
+MODULE_AUTHOR("Michael Richardson <mcr@xelerance.com>");
+#ifdef module_param
+module_param(debug_3des,int,0600)
+module_param(test_des,int,0600)
+module_param(excl_des,int,0600)
+#else
+MODULE_PARM(debug_3des, "i");
+MODULE_PARM(test_des, "i");
+MODULE_PARM(excl_des, "i");
+#endif
+#endif
+
+#define ESP_AES_MAC_KEY_SZ     16      /* 128 bit MAC key */
+#define ESP_AES_MAC_BLK_LEN    16      /* 128 bit block */
+
+static int _3des_set_key(struct ipsec_alg_enc *alg,
+                        __u8 * key_e, const __u8 * key,
+                        size_t keysize)
+{
+       int ret = 0;
+       TripleDES_context *ctx = (TripleDES_context*)key_e;
+
+       if(keysize != 192/8) {
+         return EINVAL;
+       }
+       
+       des_set_key((des_cblock *)(key + DES_KEY_SZ*0), ctx->s1);
+       des_set_key((des_cblock *)(key + DES_KEY_SZ*1), ctx->s2);
+       des_set_key((des_cblock *)(key + DES_KEY_SZ*2), ctx->s3);
+       
+       if (debug_3des > 0)
+               printk(KERN_DEBUG "klips_debug:_3des_set_key:"
+                               "ret=%d key_e=%p key=%p keysize=%ld\n",
+                                ret, key_e, key, (unsigned long int) keysize);
+       return ret;
+}
+
+static int _3des_cbc_encrypt(struct ipsec_alg_enc *alg,
+                            __u8 * key_e,
+                            __u8 * in,
+                            int ilen, const __u8 * iv,
+                            int encrypt)
+{
+       TripleDES_context *ctx=(TripleDES_context*)key_e;
+       des_cblock miv;
+
+       memcpy(&miv, iv, sizeof(miv));
+
+       if (debug_3des > 0)
+               printk(KERN_DEBUG "klips_debug:_aes_cbc_encrypt:"
+                               "key_e=%p in=%p ilen=%d iv=%p encrypt=%d\n",
+                               key_e, in, ilen, iv, encrypt);
+
+       des_ede3_cbc_encrypt((des_cblock *)in,
+                            (des_cblock *)in,
+                            ilen,
+                            ctx->s1,
+                            ctx->s2,
+                            ctx->s3,
+                            &miv, encrypt);
+       return 1;
+}
+
+static struct ipsec_alg_enc ipsec_alg_3DES = {
+       ixt_common: {   ixt_version:    IPSEC_ALG_VERSION,
+                       ixt_refcnt:     ATOMIC_INIT(0),
+                       ixt_name:       "3des",
+                       ixt_blocksize:  ESP_3DES_CBC_BLK_LEN, 
+                       ixt_support: {
+                         ias_exttype:    IPSEC_ALG_TYPE_ENCRYPT,
+                         ias_id:         ESP_3DES,
+                         ias_keyminbits: ESP_3DES_KEY_SZ*8,
+                         ias_keymaxbits: ESP_3DES_KEY_SZ*8,
+               },
+       },
+#if defined(MODULE_KLIPS_ENC_3DES_MODULE)
+       ixt_module:     THIS_MODULE,
+#endif
+       ixt_e_keylen:   ESP_3DES_KEY_SZ*8,
+       ixt_e_ctx_size: sizeof(TripleDES_context),
+       ixt_e_set_key:  _3des_set_key,
+       ixt_e_cbc_encrypt:_3des_cbc_encrypt,
+};
+
+#if defined(CONFIG_KLIPS_ENC_3DES_MODULE)
+IPSEC_ALG_MODULE_INIT_MOD( ipsec_3des_init )
+#else
+IPSEC_ALG_MODULE_INIT_STATIC( ipsec_3des_init )
+#endif
+{
+       int ret, test_ret;
+
+       if (excl_3des) ipsec_alg_3DES.ixt_common.ixt_state |= IPSEC_ALG_ST_EXCL;
+       ret=register_ipsec_alg_enc(&ipsec_alg_3DES);
+       printk("ipsec_3des_init(alg_type=%d alg_id=%d name=%s): ret=%d\n", 
+                       ipsec_alg_3DES.ixt_common.ixt_support.ias_exttype, 
+                       ipsec_alg_3DES.ixt_common.ixt_support.ias_id, 
+                       ipsec_alg_3DES.ixt_common.ixt_name, 
+                       ret);
+       if (ret==0 && test_3des) {
+               test_ret=ipsec_alg_test(
+                               ipsec_alg_3DES.ixt_common.ixt_support.ias_exttype,
+                               ipsec_alg_3DES.ixt_common.ixt_support.ias_id, 
+                               test_3des);
+               printk("ipsec_aes_init(alg_type=%d alg_id=%d): test_ret=%d\n", 
+                               ipsec_alg_3DES.ixt_common.ixt_support.ias_exttype, 
+                               ipsec_alg_3DES.ixt_common.ixt_support.ias_id, 
+                               test_ret);
+       }
+       return ret;
+}
+
+#if defined(CONFIG_KLIPS_ENC_3DES_MODULE)
+IPSEC_ALG_MODULE_EXIT_MOD( ipsec_3des_fini )
+#else
+IPSEC_ALG_MODULE_EXIT_STATIC( ipsec_3des_fini )
+#endif
+{
+       unregister_ipsec_alg_enc(&ipsec_alg_3DES);
+       return;
+}
+
+/* Dual, because 3des code is 4-clause BSD licensed */
+#ifdef MODULE_LICENSE
+MODULE_LICENSE("Dual BSD/GPL");
+#endif
+
+
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/des/set_key.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,246 @@
+/* crypto/des/set_key.c */
+/* Copyright (C) 1995-1997 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ * 
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ * 
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from 
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ * 
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ * 
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+/* set_key.c v 1.4 eay 24/9/91
+ * 1.4 Speed up by 400% :-)
+ * 1.3 added register declarations.
+ * 1.2 unrolled make_key_sched a bit more
+ * 1.1 added norm_expand_bits
+ * 1.0 First working version
+ */
+#include "des/des_locl.h"
+#include "des/podd.h"
+#include "des/sk.h"
+
+#ifndef NOPROTO
+static int check_parity(des_cblock (*key));
+#else
+static int check_parity();
+#endif
+
+int des_check_key=0;
+
+void des_set_odd_parity(key)
+des_cblock (*key);
+       {
+       int i;
+
+       for (i=0; i<DES_KEY_SZ; i++)
+               (*key)[i]=odd_parity[(*key)[i]];
+       }
+
+static int check_parity(key)
+des_cblock (*key);
+       {
+       int i;
+
+       for (i=0; i<DES_KEY_SZ; i++)
+               {
+               if ((*key)[i] != odd_parity[(*key)[i]])
+                       return(0);
+               }
+       return(1);
+       }
+
+/* Weak and semi week keys as take from
+ * %A D.W. Davies
+ * %A W.L. Price
+ * %T Security for Computer Networks
+ * %I John Wiley & Sons
+ * %D 1984
+ * Many thanks to smb@ulysses.att.com (Steven Bellovin) for the reference
+ * (and actual cblock values).
+ */
+#define NUM_WEAK_KEY   16
+static des_cblock weak_keys[NUM_WEAK_KEY]={
+       /* weak keys */
+       {0x01,0x01,0x01,0x01,0x01,0x01,0x01,0x01},
+       {0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE,0xFE},
+       {0x1F,0x1F,0x1F,0x1F,0x1F,0x1F,0x1F,0x1F},
+       {0xE0,0xE0,0xE0,0xE0,0xE0,0xE0,0xE0,0xE0},
+       /* semi-weak keys */
+       {0x01,0xFE,0x01,0xFE,0x01,0xFE,0x01,0xFE},
+       {0xFE,0x01,0xFE,0x01,0xFE,0x01,0xFE,0x01},
+       {0x1F,0xE0,0x1F,0xE0,0x0E,0xF1,0x0E,0xF1},
+       {0xE0,0x1F,0xE0,0x1F,0xF1,0x0E,0xF1,0x0E},
+       {0x01,0xE0,0x01,0xE0,0x01,0xF1,0x01,0xF1},
+       {0xE0,0x01,0xE0,0x01,0xF1,0x01,0xF1,0x01},
+       {0x1F,0xFE,0x1F,0xFE,0x0E,0xFE,0x0E,0xFE},
+       {0xFE,0x1F,0xFE,0x1F,0xFE,0x0E,0xFE,0x0E},
+       {0x01,0x1F,0x01,0x1F,0x01,0x0E,0x01,0x0E},
+       {0x1F,0x01,0x1F,0x01,0x0E,0x01,0x0E,0x01},
+       {0xE0,0xFE,0xE0,0xFE,0xF1,0xFE,0xF1,0xFE},
+       {0xFE,0xE0,0xFE,0xE0,0xFE,0xF1,0xFE,0xF1}};
+
+int des_is_weak_key(key)
+des_cblock (*key);
+       {
+       int i;
+
+       for (i=0; i<NUM_WEAK_KEY; i++)
+               /* Added == 0 to comparision, I obviously don't run
+                * this section very often :-(, thanks to
+                * engineering@MorningStar.Com for the fix
+                * eay 93/06/29
+                * Another problem, I was comparing only the first 4
+                * bytes, 97/03/18 */
+               if (memcmp(weak_keys[i],key,sizeof(des_cblock)) == 0) return(1);
+       return(0);
+       }
+
+/* NOW DEFINED IN des_local.h
+ * See ecb_encrypt.c for a pseudo description of these macros. 
+ * #define PERM_OP(a,b,t,n,m) ((t)=((((a)>>(n))^(b))&(m)),\
+ *     (b)^=(t),\
+ *     (a)=((a)^((t)<<(n))))
+ */
+
+#define HPERM_OP(a,t,n,m) ((t)=((((a)<<(16-(n)))^(a))&(m)),\
+       (a)=(a)^(t)^(t>>(16-(n))))
+
+/* return 0 if key parity is odd (correct),
+ * return -1 if key parity error,
+ * return -2 if illegal weak key.
+ */
+int des_set_key(key, schedule)
+des_cblock (*key);
+des_key_schedule schedule;
+       {
+       static int shifts2[16]={0,0,1,1,1,1,1,1,0,1,1,1,1,1,1,0};
+       register DES_LONG c,d,t,s,t2;
+       register unsigned char *in;
+       register DES_LONG *k;
+       register int i;
+
+       if (des_check_key)
+               {
+               if (!check_parity(key))
+                       return(-1);
+
+               if (des_is_weak_key(key))
+                       return(-2);
+               }
+
+       k=(DES_LONG *)schedule;
+       in=(unsigned char *)key;
+
+       c2l(in,c);
+       c2l(in,d);
+
+       /* do PC1 in 60 simple operations */ 
+/*     PERM_OP(d,c,t,4,0x0f0f0f0fL);
+       HPERM_OP(c,t,-2, 0xcccc0000L);
+       HPERM_OP(c,t,-1, 0xaaaa0000L);
+       HPERM_OP(c,t, 8, 0x00ff0000L);
+       HPERM_OP(c,t,-1, 0xaaaa0000L);
+       HPERM_OP(d,t,-8, 0xff000000L);
+       HPERM_OP(d,t, 8, 0x00ff0000L);
+       HPERM_OP(d,t, 2, 0x33330000L);
+       d=((d&0x00aa00aaL)<<7L)|((d&0x55005500L)>>7L)|(d&0xaa55aa55L);
+       d=(d>>8)|((c&0xf0000000L)>>4);
+       c&=0x0fffffffL; */
+
+       /* I now do it in 47 simple operations :-)
+        * Thanks to John Fletcher (john_fletcher@lccmail.ocf.llnl.gov)
+        * for the inspiration. :-) */
+       PERM_OP (d,c,t,4,0x0f0f0f0fL);
+       HPERM_OP(c,t,-2,0xcccc0000L);
+       HPERM_OP(d,t,-2,0xcccc0000L);
+       PERM_OP (d,c,t,1,0x55555555L);
+       PERM_OP (c,d,t,8,0x00ff00ffL);
+       PERM_OP (d,c,t,1,0x55555555L);
+       d=      (((d&0x000000ffL)<<16L)| (d&0x0000ff00L)     |
+                ((d&0x00ff0000L)>>16L)|((c&0xf0000000L)>>4L));
+       c&=0x0fffffffL;
+
+       for (i=0; i<ITERATIONS; i++)
+               {
+               if (shifts2[i])
+                       { c=((c>>2L)|(c<<26L)); d=((d>>2L)|(d<<26L)); }
+               else
+                       { c=((c>>1L)|(c<<27L)); d=((d>>1L)|(d<<27L)); }
+               c&=0x0fffffffL;
+               d&=0x0fffffffL;
+               /* could be a few less shifts but I am to lazy at this
+                * point in time to investigate */
+               s=      des_skb[0][ (c    )&0x3f                ]|
+                       des_skb[1][((c>> 6)&0x03)|((c>> 7L)&0x3c)]|
+                       des_skb[2][((c>>13)&0x0f)|((c>>14L)&0x30)]|
+                       des_skb[3][((c>>20)&0x01)|((c>>21L)&0x06) |
+                                                 ((c>>22L)&0x38)];
+               t=      des_skb[4][ (d    )&0x3f                ]|
+                       des_skb[5][((d>> 7L)&0x03)|((d>> 8L)&0x3c)]|
+                       des_skb[6][ (d>>15L)&0x3f                ]|
+                       des_skb[7][((d>>21L)&0x0f)|((d>>22L)&0x30)];
+
+               /* table contained 0213 4657 */
+               t2=((t<<16L)|(s&0x0000ffffL))&0xffffffffL;
+               *(k++)=ROTATE(t2,30)&0xffffffffL;
+
+               t2=((s>>16L)|(t&0xffff0000L));
+               *(k++)=ROTATE(t2,26)&0xffffffffL;
+               }
+       return(0);
+       }
+
+int des_key_sched(key, schedule)
+des_cblock (*key);
+des_key_schedule schedule;
+       {
+       return(des_set_key(key,schedule));
+       }
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/goodmask.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,100 @@
+/*
+ * minor utilities for subnet-mask manipulation
+ * Copyright (C) 1998, 1999  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id: goodmask.c,v 1.12 2004-07-10 07:43:47 mcr Exp $
+ */
+#include "openswan.h"
+
+#ifndef ABITS
+#define        ABITS   32      /* bits in an IPv4 address */
+#endif
+
+/*
+ - goodmask - is this a good (^1*0*$) subnet mask?
+ * You are not expected to understand this.  See Henry S. Warren Jr, 
+ * "Functions realizable with word-parallel logical and two's-complement
+ * addition instructions", CACM 20.6 (June 1977), p.439.
+ */
+int                            /* predicate */
+goodmask(mask)
+struct in_addr mask;
+{
+       unsigned long x = ntohl(mask.s_addr);
+       /* clear rightmost contiguous string of 1-bits */
+#      define  CRCS1B(x)       (((x|(x-1))+1)&x)
+#      define  TOPBIT          (1UL << 31)
+
+       /* either zero, or has one string of 1-bits which is left-justified */
+       if (x == 0 || (CRCS1B(x) == 0 && (x&TOPBIT)))
+               return 1;
+       return 0;
+}
+
+/*
+ - masktobits - how many bits in this mask?
+ * The algorithm is essentially a binary search, but highly optimized
+ * for this particular task.
+ */
+int                            /* -1 means !goodmask() */
+masktobits(mask)
+struct in_addr mask;
+{
+       unsigned long m = ntohl(mask.s_addr);
+       int masklen;
+
+       if (!goodmask(mask))
+               return -1;
+
+       if (m&0x00000001UL)
+               return 32;
+       masklen = 0;
+       if (m&(0x0000ffffUL<<1)) {      /* <<1 for 1-origin numbering */
+               masklen |= 0x10;
+               m <<= 16;
+       }
+       if (m&(0x00ff0000UL<<1)) {
+               masklen |= 0x08;
+               m <<= 8;
+       }
+       if (m&(0x0f000000UL<<1)) {
+               masklen |= 0x04;
+               m <<= 4;
+       }
+       if (m&(0x30000000UL<<1)) {
+               masklen |= 0x02;
+               m <<= 2;
+       }
+       if (m&(0x40000000UL<<1))
+               masklen |= 0x01;
+
+       return masklen;
+}
+
+/*
+ - bitstomask - return a mask with this many high bits on
+ */
+struct in_addr
+bitstomask(n)
+int n;
+{
+       struct in_addr result;
+
+       if (n > 0 && n <= ABITS)
+               result.s_addr = htonl(~((1UL << (ABITS - n)) - 1));
+       else if (n == 0)
+               result.s_addr = 0;
+       else
+               result.s_addr = 0;      /* best error report we can do */
+       return result;
+}
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/infblock.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,403 @@
+/* infblock.c -- interpret and process block types to last block
+ * Copyright (C) 1995-2002 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h 
+ */
+
+#include <zlib/zutil.h>
+#include "infblock.h"
+#include "inftrees.h"
+#include "infcodes.h"
+#include "infutil.h"
+
+struct inflate_codes_state {int dummy;}; /* for buggy compilers */
+
+/* simplify the use of the inflate_huft type with some defines */
+#define exop word.what.Exop
+#define bits word.what.Bits
+
+/* Table for deflate from PKZIP's appnote.txt. */
+local const uInt border[] = { /* Order of the bit length code lengths */
+        16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15};
+
+/*
+   Notes beyond the 1.93a appnote.txt:
+
+   1. Distance pointers never point before the beginning of the output
+      stream.
+   2. Distance pointers can point back across blocks, up to 32k away.
+   3. There is an implied maximum of 7 bits for the bit length table and
+      15 bits for the actual data.
+   4. If only one code exists, then it is encoded using one bit.  (Zero
+      would be more efficient, but perhaps a little confusing.)  If two
+      codes exist, they are coded using one bit each (0 and 1).
+   5. There is no way of sending zero distance codes--a dummy must be
+      sent if there are none.  (History: a pre 2.0 version of PKZIP would
+      store blocks with no distance codes, but this was discovered to be
+      too harsh a criterion.)  Valid only for 1.93a.  2.04c does allow
+      zero distance codes, which is sent as one code of zero bits in
+      length.
+   6. There are up to 286 literal/length codes.  Code 256 represents the
+      end-of-block.  Note however that the static length tree defines
+      288 codes just to fill out the Huffman codes.  Codes 286 and 287
+      cannot be used though, since there is no length base or extra bits
+      defined for them.  Similarily, there are up to 30 distance codes.
+      However, static trees define 32 codes (all 5 bits) to fill out the
+      Huffman codes, but the last two had better not show up in the data.
+   7. Unzip can check dynamic Huffman blocks for complete code sets.
+      The exception is that a single code would not be complete (see #4).
+   8. The five bits following the block type is really the number of
+      literal codes sent minus 257.
+   9. Length codes 8,16,16 are interpreted as 13 length codes of 8 bits
+      (1+6+6).  Therefore, to output three times the length, you output
+      three codes (1+1+1), whereas to output four times the same length,
+      you only need two codes (1+3).  Hmm.
+  10. In the tree reconstruction algorithm, Code = Code + Increment
+      only if BitLength(i) is not zero.  (Pretty obvious.)
+  11. Correction: 4 Bits: # of Bit Length codes - 4     (4 - 19)
+  12. Note: length code 284 can represent 227-258, but length code 285
+      really is 258.  The last length deserves its own, short code
+      since it gets used a lot in very redundant files.  The length
+      258 is special since 258 - 3 (the min match length) is 255.
+  13. The literal/length and distance code bit lengths are read as a
+      single stream of lengths.  It is possible (and advantageous) for
+      a repeat code (16, 17, or 18) to go across the boundary between
+      the two sets of lengths.
+ */
+
+
+void inflate_blocks_reset(s, z, c)
+inflate_blocks_statef *s;
+z_streamp z;
+uLongf *c;
+{
+  if (c != Z_NULL)
+    *c = s->check;
+  if (s->mode == BTREE || s->mode == DTREE)
+    ZFREE(z, s->sub.trees.blens);
+  if (s->mode == CODES)
+    inflate_codes_free(s->sub.decode.codes, z);
+  s->mode = TYPE;
+  s->bitk = 0;
+  s->bitb = 0;
+  s->read = s->write = s->window;
+  if (s->checkfn != Z_NULL)
+    z->adler = s->check = (*s->checkfn)(0L, (const Bytef *)Z_NULL, 0);
+  Tracev((stderr, "inflate:   blocks reset\n"));
+}
+
+
+inflate_blocks_statef *inflate_blocks_new(z, c, w)
+z_streamp z;
+check_func c;
+uInt w;
+{
+  inflate_blocks_statef *s;
+
+  if ((s = (inflate_blocks_statef *)ZALLOC
+       (z,1,sizeof(struct inflate_blocks_state))) == Z_NULL)
+    return s;
+  if ((s->hufts =
+       (inflate_huft *)ZALLOC(z, sizeof(inflate_huft), MANY)) == Z_NULL)
+  {
+    ZFREE(z, s);
+    return Z_NULL;
+  }
+  if ((s->window = (Bytef *)ZALLOC(z, 1, w)) == Z_NULL)
+  {
+    ZFREE(z, s->hufts);
+    ZFREE(z, s);
+    return Z_NULL;
+  }
+  s->end = s->window + w;
+  s->checkfn = c;
+  s->mode = TYPE;
+  Tracev((stderr, "inflate:   blocks allocated\n"));
+  inflate_blocks_reset(s, z, Z_NULL);
+  return s;
+}
+
+
+int inflate_blocks(s, z, r)
+inflate_blocks_statef *s;
+z_streamp z;
+int r;
+{
+  uInt t;               /* temporary storage */
+  uLong b;              /* bit buffer */
+  uInt k;               /* bits in bit buffer */
+  Bytef *p;             /* input data pointer */
+  uInt n;               /* bytes available there */
+  Bytef *q;             /* output window write pointer */
+  uInt m;               /* bytes to end of window or read pointer */
+
+  /* copy input/output information to locals (UPDATE macro restores) */
+  LOAD
+
+  /* process input based on current state */
+  while (1) switch (s->mode)
+  {
+    case TYPE:
+      NEEDBITS(3)
+      t = (uInt)b & 7;
+      s->last = t & 1;
+      switch (t >> 1)
+      {
+        case 0:                         /* stored */
+          Tracev((stderr, "inflate:     stored block%s\n",
+                 s->last ? " (last)" : ""));
+          DUMPBITS(3)
+          t = k & 7;                    /* go to byte boundary */
+          DUMPBITS(t)
+          s->mode = LENS;               /* get length of stored block */
+          break;
+        case 1:                         /* fixed */
+          Tracev((stderr, "inflate:     fixed codes block%s\n",
+                 s->last ? " (last)" : ""));
+          {
+            uInt bl, bd;
+            inflate_huft *tl, *td;
+
+            inflate_trees_fixed(&bl, &bd, &tl, &td, z);
+            s->sub.decode.codes = inflate_codes_new(bl, bd, tl, td, z);
+            if (s->sub.decode.codes == Z_NULL)
+            {
+              r = Z_MEM_ERROR;
+              LEAVE
+            }
+          }
+          DUMPBITS(3)
+          s->mode = CODES;
+          break;
+        case 2:                         /* dynamic */
+          Tracev((stderr, "inflate:     dynamic codes block%s\n",
+                 s->last ? " (last)" : ""));
+          DUMPBITS(3)
+          s->mode = TABLE;
+          break;
+        case 3:                         /* illegal */
+          DUMPBITS(3)
+          s->mode = BAD;
+          z->msg = (char*)"invalid block type";
+          r = Z_DATA_ERROR;
+          LEAVE
+      }
+      break;
+    case LENS:
+      NEEDBITS(32)
+      if ((((~b) >> 16) & 0xffff) != (b & 0xffff))
+      {
+        s->mode = BAD;
+        z->msg = (char*)"invalid stored block lengths";
+        r = Z_DATA_ERROR;
+        LEAVE
+      }
+      s->sub.left = (uInt)b & 0xffff;
+      b = k = 0;                      /* dump bits */
+      Tracev((stderr, "inflate:       stored length %u\n", s->sub.left));
+      s->mode = s->sub.left ? STORED : (s->last ? DRY : TYPE);
+      break;
+    case STORED:
+      if (n == 0)
+        LEAVE
+      NEEDOUT
+      t = s->sub.left;
+      if (t > n) t = n;
+      if (t > m) t = m;
+      zmemcpy(q, p, t);
+      p += t;  n -= t;
+      q += t;  m -= t;
+      if ((s->sub.left -= t) != 0)
+        break;
+      Tracev((stderr, "inflate:       stored end, %lu total out\n",
+              z->total_out + (q >= s->read ? q - s->read :
+              (s->end - s->read) + (q - s->window))));
+      s->mode = s->last ? DRY : TYPE;
+      break;
+    case TABLE:
+      NEEDBITS(14)
+      s->sub.trees.table = t = (uInt)b & 0x3fff;
+#ifndef PKZIP_BUG_WORKAROUND
+      if ((t & 0x1f) > 29 || ((t >> 5) & 0x1f) > 29)
+      {
+        s->mode = BAD;
+        z->msg = (char*)"too many length or distance symbols";
+        r = Z_DATA_ERROR;
+        LEAVE
+      }
+#endif
+      t = 258 + (t & 0x1f) + ((t >> 5) & 0x1f);
+      if ((s->sub.trees.blens = (uIntf*)ZALLOC(z, t, sizeof(uInt))) == Z_NULL)
+      {
+        r = Z_MEM_ERROR;
+        LEAVE
+      }
+      DUMPBITS(14)
+      s->sub.trees.index = 0;
+      Tracev((stderr, "inflate:       table sizes ok\n"));
+      s->mode = BTREE;
+    case BTREE:
+      while (s->sub.trees.index < 4 + (s->sub.trees.table >> 10))
+      {
+        NEEDBITS(3)
+        s->sub.trees.blens[border[s->sub.trees.index++]] = (uInt)b & 7;
+        DUMPBITS(3)
+      }
+      while (s->sub.trees.index < 19)
+        s->sub.trees.blens[border[s->sub.trees.index++]] = 0;
+      s->sub.trees.bb = 7;
+      t = inflate_trees_bits(s->sub.trees.blens, &s->sub.trees.bb,
+                             &s->sub.trees.tb, s->hufts, z);
+      if (t != Z_OK)
+      {
+        r = t;
+        if (r == Z_DATA_ERROR)
+        {
+          ZFREE(z, s->sub.trees.blens);
+          s->mode = BAD;
+        }
+        LEAVE
+      }
+      s->sub.trees.index = 0;
+      Tracev((stderr, "inflate:       bits tree ok\n"));
+      s->mode = DTREE;
+    case DTREE:
+      while (t = s->sub.trees.table,
+             s->sub.trees.index < 258 + (t & 0x1f) + ((t >> 5) & 0x1f))
+      {
+        inflate_huft *h;
+        uInt i, j, c;
+
+        t = s->sub.trees.bb;
+        NEEDBITS(t)
+        h = s->sub.trees.tb + ((uInt)b & inflate_mask[t]);
+        t = h->bits;
+        c = h->base;
+        if (c < 16)
+        {
+          DUMPBITS(t)
+          s->sub.trees.blens[s->sub.trees.index++] = c;
+        }
+        else /* c == 16..18 */
+        {
+          i = c == 18 ? 7 : c - 14;
+          j = c == 18 ? 11 : 3;
+          NEEDBITS(t + i)
+          DUMPBITS(t)
+          j += (uInt)b & inflate_mask[i];
+          DUMPBITS(i)
+          i = s->sub.trees.index;
+          t = s->sub.trees.table;
+          if (i + j > 258 + (t & 0x1f) + ((t >> 5) & 0x1f) ||
+              (c == 16 && i < 1))
+          {
+            ZFREE(z, s->sub.trees.blens);
+            s->mode = BAD;
+            z->msg = (char*)"invalid bit length repeat";
+            r = Z_DATA_ERROR;
+            LEAVE
+          }
+          c = c == 16 ? s->sub.trees.blens[i - 1] : 0;
+          do {
+            s->sub.trees.blens[i++] = c;
+          } while (--j);
+          s->sub.trees.index = i;
+        }
+      }
+      s->sub.trees.tb = Z_NULL;
+      {
+        uInt bl, bd;
+        inflate_huft *tl, *td;
+        inflate_codes_statef *c;
+
+        bl = 9;         /* must be <= 9 for lookahead assumptions */
+        bd = 6;         /* must be <= 9 for lookahead assumptions */
+        t = s->sub.trees.table;
+        t = inflate_trees_dynamic(257 + (t & 0x1f), 1 + ((t >> 5) & 0x1f),
+                                  s->sub.trees.blens, &bl, &bd, &tl, &td,
+                                  s->hufts, z);
+        if (t != Z_OK)
+        {
+          if (t == (uInt)Z_DATA_ERROR)
+          {
+            ZFREE(z, s->sub.trees.blens);
+            s->mode = BAD;
+          }
+          r = t;
+          LEAVE
+        }
+        Tracev((stderr, "inflate:       trees ok\n"));
+        if ((c = inflate_codes_new(bl, bd, tl, td, z)) == Z_NULL)
+        {
+          r = Z_MEM_ERROR;
+          LEAVE
+        }
+        s->sub.decode.codes = c;
+      }
+      ZFREE(z, s->sub.trees.blens);
+      s->mode = CODES;
+    case CODES:
+      UPDATE
+      if ((r = inflate_codes(s, z, r)) != Z_STREAM_END)
+        return inflate_flush(s, z, r);
+      r = Z_OK;
+      inflate_codes_free(s->sub.decode.codes, z);
+      LOAD
+      Tracev((stderr, "inflate:       codes end, %lu total out\n",
+              z->total_out + (q >= s->read ? q - s->read :
+              (s->end - s->read) + (q - s->window))));
+      if (!s->last)
+      {
+        s->mode = TYPE;
+        break;
+      }
+      s->mode = DRY;
+    case DRY:
+      FLUSH
+      if (s->read != s->write)
+        LEAVE
+      s->mode = DONE;
+    case DONE:
+      r = Z_STREAM_END;
+      LEAVE
+    case BAD:
+      r = Z_DATA_ERROR;
+      LEAVE
+    default:
+      r = Z_STREAM_ERROR;
+      LEAVE
+  }
+}
+
+
+int inflate_blocks_free(s, z)
+inflate_blocks_statef *s;
+z_streamp z;
+{
+  inflate_blocks_reset(s, z, Z_NULL);
+  ZFREE(z, s->window);
+  ZFREE(z, s->hufts);
+  ZFREE(z, s);
+  Tracev((stderr, "inflate:   blocks freed\n"));
+  return Z_OK;
+}
+
+
+void inflate_set_dictionary(s, d, n)
+inflate_blocks_statef *s;
+const Bytef *d;
+uInt  n;
+{
+  zmemcpy(s->window, d, n);
+  s->read = s->write = s->window + n;
+}
+
+
+/* Returns true if inflate is currently at the end of a block generated
+ * by Z_SYNC_FLUSH or Z_FULL_FLUSH. 
+ * IN assertion: s != Z_NULL
+ */
+int inflate_blocks_sync_point(s)
+inflate_blocks_statef *s;
+{
+  return s->mode == LENS;
+}
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/infblock.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,39 @@
+/* infblock.h -- header to use infblock.c
+ * Copyright (C) 1995-2002 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h 
+ */
+
+/* WARNING: this file should *not* be used by applications. It is
+   part of the implementation of the compression library and is
+   subject to change. Applications should only use zlib.h.
+ */
+
+struct inflate_blocks_state;
+typedef struct inflate_blocks_state FAR inflate_blocks_statef;
+
+extern inflate_blocks_statef * inflate_blocks_new OF((
+    z_streamp z,
+    check_func c,               /* check function */
+    uInt w));                   /* window size */
+
+extern int inflate_blocks OF((
+    inflate_blocks_statef *,
+    z_streamp ,
+    int));                      /* initial return code */
+
+extern void inflate_blocks_reset OF((
+    inflate_blocks_statef *,
+    z_streamp ,
+    uLongf *));                  /* check value on output */
+
+extern int inflate_blocks_free OF((
+    inflate_blocks_statef *,
+    z_streamp));
+
+extern void inflate_set_dictionary OF((
+    inflate_blocks_statef *s,
+    const Bytef *d,  /* dictionary */
+    uInt  n));       /* dictionary length */
+
+extern int inflate_blocks_sync_point OF((
+    inflate_blocks_statef *s));
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/infcodes.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,251 @@
+/* infcodes.c -- process literals and length/distance pairs
+ * Copyright (C) 1995-2002 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h 
+ */
+
+#include <zlib/zutil.h>
+#include "inftrees.h"
+#include "infblock.h"
+#include "infcodes.h"
+#include "infutil.h"
+#include "inffast.h"
+
+/* simplify the use of the inflate_huft type with some defines */
+#define exop word.what.Exop
+#define bits word.what.Bits
+
+typedef enum {        /* waiting for "i:"=input, "o:"=output, "x:"=nothing */
+      START,    /* x: set up for LEN */
+      LEN,      /* i: get length/literal/eob next */
+      LENEXT,   /* i: getting length extra (have base) */
+      DIST,     /* i: get distance next */
+      DISTEXT,  /* i: getting distance extra */
+      COPY,     /* o: copying bytes in window, waiting for space */
+      LIT,      /* o: got literal, waiting for output space */
+      WASH,     /* o: got eob, possibly still output waiting */
+      END,      /* x: got eob and all data flushed */
+      BADCODE}  /* x: got error */
+inflate_codes_mode;
+
+/* inflate codes private state */
+struct inflate_codes_state {
+
+  /* mode */
+  inflate_codes_mode mode;      /* current inflate_codes mode */
+
+  /* mode dependent information */
+  uInt len;
+  union {
+    struct {
+      inflate_huft *tree;       /* pointer into tree */
+      uInt need;                /* bits needed */
+    } code;             /* if LEN or DIST, where in tree */
+    uInt lit;           /* if LIT, literal */
+    struct {
+      uInt get;                 /* bits to get for extra */
+      uInt dist;                /* distance back to copy from */
+    } copy;             /* if EXT or COPY, where and how much */
+  } sub;                /* submode */
+
+  /* mode independent information */
+  Byte lbits;           /* ltree bits decoded per branch */
+  Byte dbits;           /* dtree bits decoder per branch */
+  inflate_huft *ltree;          /* literal/length/eob tree */
+  inflate_huft *dtree;          /* distance tree */
+
+};
+
+
+inflate_codes_statef *inflate_codes_new(bl, bd, tl, td, z)
+uInt bl, bd;
+inflate_huft *tl;
+inflate_huft *td; /* need separate declaration for Borland C++ */
+z_streamp z;
+{
+  inflate_codes_statef *c;
+
+  if ((c = (inflate_codes_statef *)
+       ZALLOC(z,1,sizeof(struct inflate_codes_state))) != Z_NULL)
+  {
+    c->mode = START;
+    c->lbits = (Byte)bl;
+    c->dbits = (Byte)bd;
+    c->ltree = tl;
+    c->dtree = td;
+    Tracev((stderr, "inflate:       codes new\n"));
+  }
+  return c;
+}
+
+
+int inflate_codes(s, z, r)
+inflate_blocks_statef *s;
+z_streamp z;
+int r;
+{
+  uInt j;               /* temporary storage */
+  inflate_huft *t;      /* temporary pointer */
+  uInt e;               /* extra bits or operation */
+  uLong b;              /* bit buffer */
+  uInt k;               /* bits in bit buffer */
+  Bytef *p;             /* input data pointer */
+  uInt n;               /* bytes available there */
+  Bytef *q;             /* output window write pointer */
+  uInt m;               /* bytes to end of window or read pointer */
+  Bytef *f;             /* pointer to copy strings from */
+  inflate_codes_statef *c = s->sub.decode.codes;  /* codes state */
+
+  /* copy input/output information to locals (UPDATE macro restores) */
+  LOAD
+
+  /* process input and output based on current state */
+  while (1) switch (c->mode)
+  {             /* waiting for "i:"=input, "o:"=output, "x:"=nothing */
+    case START:         /* x: set up for LEN */
+#ifndef SLOW
+      if (m >= 258 && n >= 10)
+      {
+        UPDATE
+        r = inflate_fast(c->lbits, c->dbits, c->ltree, c->dtree, s, z);
+        LOAD
+        if (r != Z_OK)
+        {
+          c->mode = r == Z_STREAM_END ? WASH : BADCODE;
+          break;
+        }
+      }
+#endif /* !SLOW */
+      c->sub.code.need = c->lbits;
+      c->sub.code.tree = c->ltree;
+      c->mode = LEN;
+    case LEN:           /* i: get length/literal/eob next */
+      j = c->sub.code.need;
+      NEEDBITS(j)
+      t = c->sub.code.tree + ((uInt)b & inflate_mask[j]);
+      DUMPBITS(t->bits)
+      e = (uInt)(t->exop);
+      if (e == 0)               /* literal */
+      {
+        c->sub.lit = t->base;
+        Tracevv((stderr, t->base >= 0x20 && t->base < 0x7f ?
+                 "inflate:         literal '%c'\n" :
+                 "inflate:         literal 0x%02x\n", t->base));
+        c->mode = LIT;
+        break;
+      }
+      if (e & 16)               /* length */
+      {
+        c->sub.copy.get = e & 15;
+        c->len = t->base;
+        c->mode = LENEXT;
+        break;
+      }
+      if ((e & 64) == 0)        /* next table */
+      {
+        c->sub.code.need = e;
+        c->sub.code.tree = t + t->base;
+        break;
+      }
+      if (e & 32)               /* end of block */
+      {
+        Tracevv((stderr, "inflate:         end of block\n"));
+        c->mode = WASH;
+        break;
+      }
+      c->mode = BADCODE;        /* invalid code */
+      z->msg = (char*)"invalid literal/length code";
+      r = Z_DATA_ERROR;
+      LEAVE
+    case LENEXT:        /* i: getting length extra (have base) */
+      j = c->sub.copy.get;
+      NEEDBITS(j)
+      c->len += (uInt)b & inflate_mask[j];
+      DUMPBITS(j)
+      c->sub.code.need = c->dbits;
+      c->sub.code.tree = c->dtree;
+      Tracevv((stderr, "inflate:         length %u\n", c->len));
+      c->mode = DIST;
+    case DIST:          /* i: get distance next */
+      j = c->sub.code.need;
+      NEEDBITS(j)
+      t = c->sub.code.tree + ((uInt)b & inflate_mask[j]);
+      DUMPBITS(t->bits)
+      e = (uInt)(t->exop);
+      if (e & 16)               /* distance */
+      {
+        c->sub.copy.get = e & 15;
+        c->sub.copy.dist = t->base;
+        c->mode = DISTEXT;
+        break;
+      }
+      if ((e & 64) == 0)        /* next table */
+      {
+        c->sub.code.need = e;
+        c->sub.code.tree = t + t->base;
+        break;
+      }
+      c->mode = BADCODE;        /* invalid code */
+      z->msg = (char*)"invalid distance code";
+      r = Z_DATA_ERROR;
+      LEAVE
+    case DISTEXT:       /* i: getting distance extra */
+      j = c->sub.copy.get;
+      NEEDBITS(j)
+      c->sub.copy.dist += (uInt)b & inflate_mask[j];
+      DUMPBITS(j)
+      Tracevv((stderr, "inflate:         distance %u\n", c->sub.copy.dist));
+      c->mode = COPY;
+    case COPY:          /* o: copying bytes in window, waiting for space */
+      f = q - c->sub.copy.dist;
+      while (f < s->window)             /* modulo window size-"while" instead */
+        f += s->end - s->window;        /* of "if" handles invalid distances */
+      while (c->len)
+      {
+        NEEDOUT
+        OUTBYTE(*f++)
+        if (f == s->end)
+          f = s->window;
+        c->len--;
+      }
+      c->mode = START;
+      break;
+    case LIT:           /* o: got literal, waiting for output space */
+      NEEDOUT
+      OUTBYTE(c->sub.lit)
+      c->mode = START;
+      break;
+    case WASH:          /* o: got eob, possibly more output */
+      if (k > 7)        /* return unused byte, if any */
+      {
+        Assert(k < 16, "inflate_codes grabbed too many bytes")
+        k -= 8;
+        n++;
+        p--;            /* can always return one */
+      }
+      FLUSH
+      if (s->read != s->write)
+        LEAVE
+      c->mode = END;
+    case END:
+      r = Z_STREAM_END;
+      LEAVE
+    case BADCODE:       /* x: got error */
+      r = Z_DATA_ERROR;
+      LEAVE
+    default:
+      r = Z_STREAM_ERROR;
+      LEAVE
+  }
+#ifdef NEED_DUMMY_RETURN
+  return Z_STREAM_ERROR;  /* Some dumb compilers complain without this */
+#endif
+}
+
+
+void inflate_codes_free(c, z)
+inflate_codes_statef *c;
+z_streamp z;
+{
+  ZFREE(z, c);
+  Tracev((stderr, "inflate:       codes free\n"));
+}
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/infcodes.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,31 @@
+/* infcodes.h -- header to use infcodes.c
+ * Copyright (C) 1995-2002 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h 
+ */
+
+/* WARNING: this file should *not* be used by applications. It is
+   part of the implementation of the compression library and is
+   subject to change. Applications should only use zlib.h.
+ */
+
+#ifndef _INFCODES_H
+#define _INFCODES_H
+
+struct inflate_codes_state;
+typedef struct inflate_codes_state FAR inflate_codes_statef;
+
+extern inflate_codes_statef *inflate_codes_new OF((
+    uInt, uInt,
+    inflate_huft *, inflate_huft *,
+    z_streamp ));
+
+extern int inflate_codes OF((
+    inflate_blocks_statef *,
+    z_streamp ,
+    int));
+
+extern void inflate_codes_free OF((
+    inflate_codes_statef *,
+    z_streamp ));
+
+#endif /* _INFCODES_H */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/inffast.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,183 @@
+/* inffast.c -- process literals and length/distance pairs fast
+ * Copyright (C) 1995-2002 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h 
+ */
+
+#include <zlib/zutil.h>
+#include "inftrees.h"
+#include "infblock.h"
+#include "infcodes.h"
+#include "infutil.h"
+#include "inffast.h"
+
+struct inflate_codes_state {int dummy;}; /* for buggy compilers */
+
+/* simplify the use of the inflate_huft type with some defines */
+#define exop word.what.Exop
+#define bits word.what.Bits
+
+/* macros for bit input with no checking and for returning unused bytes */
+#define GRABBITS(j) {while(k<(j)){b|=((uLong)NEXTBYTE)<<k;k+=8;}}
+#define UNGRAB {c=z->avail_in-n;c=(k>>3)<c?k>>3:c;n+=c;p-=c;k-=c<<3;}
+
+/* Called with number of bytes left to write in window at least 258
+   (the maximum string length) and number of input bytes available
+   at least ten.  The ten bytes are six bytes for the longest length/
+   distance pair plus four bytes for overloading the bit buffer. */
+
+int inflate_fast(bl, bd, tl, td, s, z)
+uInt bl, bd;
+inflate_huft *tl;
+inflate_huft *td; /* need separate declaration for Borland C++ */
+inflate_blocks_statef *s;
+z_streamp z;
+{
+  inflate_huft *t;      /* temporary pointer */
+  uInt e;               /* extra bits or operation */
+  uLong b;              /* bit buffer */
+  uInt k;               /* bits in bit buffer */
+  Bytef *p;             /* input data pointer */
+  uInt n;               /* bytes available there */
+  Bytef *q;             /* output window write pointer */
+  uInt m;               /* bytes to end of window or read pointer */
+  uInt ml;              /* mask for literal/length tree */
+  uInt md;              /* mask for distance tree */
+  uInt c;               /* bytes to copy */
+  uInt d;               /* distance back to copy from */
+  Bytef *r;             /* copy source pointer */
+
+  /* load input, output, bit values */
+  LOAD
+
+  /* initialize masks */
+  ml = inflate_mask[bl];
+  md = inflate_mask[bd];
+
+  /* do until not enough input or output space for fast loop */
+  do {                          /* assume called with m >= 258 && n >= 10 */
+    /* get literal/length code */
+    GRABBITS(20)                /* max bits for literal/length code */
+    if ((e = (t = tl + ((uInt)b & ml))->exop) == 0)
+    {
+      DUMPBITS(t->bits)
+      Tracevv((stderr, t->base >= 0x20 && t->base < 0x7f ?
+                "inflate:         * literal '%c'\n" :
+                "inflate:         * literal 0x%02x\n", t->base));
+      *q++ = (Byte)t->base;
+      m--;
+      continue;
+    }
+    do {
+      DUMPBITS(t->bits)
+      if (e & 16)
+      {
+        /* get extra bits for length */
+        e &= 15;
+        c = t->base + ((uInt)b & inflate_mask[e]);
+        DUMPBITS(e)
+        Tracevv((stderr, "inflate:         * length %u\n", c));
+
+        /* decode distance base of block to copy */
+        GRABBITS(15);           /* max bits for distance code */
+        e = (t = td + ((uInt)b & md))->exop;
+        do {
+          DUMPBITS(t->bits)
+          if (e & 16)
+          {
+            /* get extra bits to add to distance base */
+            e &= 15;
+            GRABBITS(e)         /* get extra bits (up to 13) */
+            d = t->base + ((uInt)b & inflate_mask[e]);
+            DUMPBITS(e)
+            Tracevv((stderr, "inflate:         * distance %u\n", d));
+
+            /* do the copy */
+            m -= c;
+            r = q - d;
+            if (r < s->window)                  /* wrap if needed */
+            {
+              do {
+                r += s->end - s->window;        /* force pointer in window */
+              } while (r < s->window);          /* covers invalid distances */
+              e = s->end - r;
+              if (c > e)
+              {
+                c -= e;                         /* wrapped copy */
+                do {
+                    *q++ = *r++;
+                } while (--e);
+                r = s->window;
+                do {
+                    *q++ = *r++;
+                } while (--c);
+              }
+              else                              /* normal copy */
+              {
+                *q++ = *r++;  c--;
+                *q++ = *r++;  c--;
+                do {
+                    *q++ = *r++;
+                } while (--c);
+              }
+            }
+            else                                /* normal copy */
+            {
+              *q++ = *r++;  c--;
+              *q++ = *r++;  c--;
+              do {
+                *q++ = *r++;
+              } while (--c);
+            }
+            break;
+          }
+          else if ((e & 64) == 0)
+          {
+            t += t->base;
+            e = (t += ((uInt)b & inflate_mask[e]))->exop;
+          }
+          else
+          {
+            z->msg = (char*)"invalid distance code";
+            UNGRAB
+            UPDATE
+            return Z_DATA_ERROR;
+          }
+        } while (1);
+        break;
+      }
+      if ((e & 64) == 0)
+      {
+        t += t->base;
+        if ((e = (t += ((uInt)b & inflate_mask[e]))->exop) == 0)
+        {
+          DUMPBITS(t->bits)
+          Tracevv((stderr, t->base >= 0x20 && t->base < 0x7f ?
+                    "inflate:         * literal '%c'\n" :
+                    "inflate:         * literal 0x%02x\n", t->base));
+          *q++ = (Byte)t->base;
+          m--;
+          break;
+        }
+      }
+      else if (e & 32)
+      {
+        Tracevv((stderr, "inflate:         * end of block\n"));
+        UNGRAB
+        UPDATE
+        return Z_STREAM_END;
+      }
+      else
+      {
+        z->msg = (char*)"invalid literal/length code";
+        UNGRAB
+        UPDATE
+        return Z_DATA_ERROR;
+      }
+    } while (1);
+  } while (m >= 258 && n >= 10);
+
+  /* not enough input or output--restore pointers and return */
+  UNGRAB
+  UPDATE
+  return Z_OK;
+}
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/inffast.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,22 @@
+/* inffast.h -- header to use inffast.c
+ * Copyright (C) 1995-2002 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h 
+ */
+
+/* WARNING: this file should *not* be used by applications. It is
+   part of the implementation of the compression library and is
+   subject to change. Applications should only use zlib.h.
+ */
+
+#ifndef _INFFAST_H
+#define _INFFAST_H
+
+extern int inflate_fast OF((
+    uInt,
+    uInt,
+    inflate_huft *,
+    inflate_huft *,
+    inflate_blocks_statef *,
+    z_streamp ));
+
+#endif /* _INFFAST_H */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/inffixed.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,151 @@
+/* inffixed.h -- table for decoding fixed codes
+ * Generated automatically by the maketree.c program
+ */
+
+/* WARNING: this file should *not* be used by applications. It is
+   part of the implementation of the compression library and is
+   subject to change. Applications should only use zlib.h.
+ */
+
+local uInt fixed_bl = 9;
+local uInt fixed_bd = 5;
+local inflate_huft fixed_tl[] = {
+    {{{96,7}},256}, {{{0,8}},80}, {{{0,8}},16}, {{{84,8}},115},
+    {{{82,7}},31}, {{{0,8}},112}, {{{0,8}},48}, {{{0,9}},192},
+    {{{80,7}},10}, {{{0,8}},96}, {{{0,8}},32}, {{{0,9}},160},
+    {{{0,8}},0}, {{{0,8}},128}, {{{0,8}},64}, {{{0,9}},224},
+    {{{80,7}},6}, {{{0,8}},88}, {{{0,8}},24}, {{{0,9}},144},
+    {{{83,7}},59}, {{{0,8}},120}, {{{0,8}},56}, {{{0,9}},208},
+    {{{81,7}},17}, {{{0,8}},104}, {{{0,8}},40}, {{{0,9}},176},
+    {{{0,8}},8}, {{{0,8}},136}, {{{0,8}},72}, {{{0,9}},240},
+    {{{80,7}},4}, {{{0,8}},84}, {{{0,8}},20}, {{{85,8}},227},
+    {{{83,7}},43}, {{{0,8}},116}, {{{0,8}},52}, {{{0,9}},200},
+    {{{81,7}},13}, {{{0,8}},100}, {{{0,8}},36}, {{{0,9}},168},
+    {{{0,8}},4}, {{{0,8}},132}, {{{0,8}},68}, {{{0,9}},232},
+    {{{80,7}},8}, {{{0,8}},92}, {{{0,8}},28}, {{{0,9}},152},
+    {{{84,7}},83}, {{{0,8}},124}, {{{0,8}},60}, {{{0,9}},216},
+    {{{82,7}},23}, {{{0,8}},108}, {{{0,8}},44}, {{{0,9}},184},
+    {{{0,8}},12}, {{{0,8}},140}, {{{0,8}},76}, {{{0,9}},248},
+    {{{80,7}},3}, {{{0,8}},82}, {{{0,8}},18}, {{{85,8}},163},
+    {{{83,7}},35}, {{{0,8}},114}, {{{0,8}},50}, {{{0,9}},196},
+    {{{81,7}},11}, {{{0,8}},98}, {{{0,8}},34}, {{{0,9}},164},
+    {{{0,8}},2}, {{{0,8}},130}, {{{0,8}},66}, {{{0,9}},228},
+    {{{80,7}},7}, {{{0,8}},90}, {{{0,8}},26}, {{{0,9}},148},
+    {{{84,7}},67}, {{{0,8}},122}, {{{0,8}},58}, {{{0,9}},212},
+    {{{82,7}},19}, {{{0,8}},106}, {{{0,8}},42}, {{{0,9}},180},
+    {{{0,8}},10}, {{{0,8}},138}, {{{0,8}},74}, {{{0,9}},244},
+    {{{80,7}},5}, {{{0,8}},86}, {{{0,8}},22}, {{{192,8}},0},
+    {{{83,7}},51}, {{{0,8}},118}, {{{0,8}},54}, {{{0,9}},204},
+    {{{81,7}},15}, {{{0,8}},102}, {{{0,8}},38}, {{{0,9}},172},
+    {{{0,8}},6}, {{{0,8}},134}, {{{0,8}},70}, {{{0,9}},236},
+    {{{80,7}},9}, {{{0,8}},94}, {{{0,8}},30}, {{{0,9}},156},
+    {{{84,7}},99}, {{{0,8}},126}, {{{0,8}},62}, {{{0,9}},220},
+    {{{82,7}},27}, {{{0,8}},110}, {{{0,8}},46}, {{{0,9}},188},
+    {{{0,8}},14}, {{{0,8}},142}, {{{0,8}},78}, {{{0,9}},252},
+    {{{96,7}},256}, {{{0,8}},81}, {{{0,8}},17}, {{{85,8}},131},
+    {{{82,7}},31}, {{{0,8}},113}, {{{0,8}},49}, {{{0,9}},194},
+    {{{80,7}},10}, {{{0,8}},97}, {{{0,8}},33}, {{{0,9}},162},
+    {{{0,8}},1}, {{{0,8}},129}, {{{0,8}},65}, {{{0,9}},226},
+    {{{80,7}},6}, {{{0,8}},89}, {{{0,8}},25}, {{{0,9}},146},
+    {{{83,7}},59}, {{{0,8}},121}, {{{0,8}},57}, {{{0,9}},210},
+    {{{81,7}},17}, {{{0,8}},105}, {{{0,8}},41}, {{{0,9}},178},
+    {{{0,8}},9}, {{{0,8}},137}, {{{0,8}},73}, {{{0,9}},242},
+    {{{80,7}},4}, {{{0,8}},85}, {{{0,8}},21}, {{{80,8}},258},
+    {{{83,7}},43}, {{{0,8}},117}, {{{0,8}},53}, {{{0,9}},202},
+    {{{81,7}},13}, {{{0,8}},101}, {{{0,8}},37}, {{{0,9}},170},
+    {{{0,8}},5}, {{{0,8}},133}, {{{0,8}},69}, {{{0,9}},234},
+    {{{80,7}},8}, {{{0,8}},93}, {{{0,8}},29}, {{{0,9}},154},
+    {{{84,7}},83}, {{{0,8}},125}, {{{0,8}},61}, {{{0,9}},218},
+    {{{82,7}},23}, {{{0,8}},109}, {{{0,8}},45}, {{{0,9}},186},
+    {{{0,8}},13}, {{{0,8}},141}, {{{0,8}},77}, {{{0,9}},250},
+    {{{80,7}},3}, {{{0,8}},83}, {{{0,8}},19}, {{{85,8}},195},
+    {{{83,7}},35}, {{{0,8}},115}, {{{0,8}},51}, {{{0,9}},198},
+    {{{81,7}},11}, {{{0,8}},99}, {{{0,8}},35}, {{{0,9}},166},
+    {{{0,8}},3}, {{{0,8}},131}, {{{0,8}},67}, {{{0,9}},230},
+    {{{80,7}},7}, {{{0,8}},91}, {{{0,8}},27}, {{{0,9}},150},
+    {{{84,7}},67}, {{{0,8}},123}, {{{0,8}},59}, {{{0,9}},214},
+    {{{82,7}},19}, {{{0,8}},107}, {{{0,8}},43}, {{{0,9}},182},
+    {{{0,8}},11}, {{{0,8}},139}, {{{0,8}},75}, {{{0,9}},246},
+    {{{80,7}},5}, {{{0,8}},87}, {{{0,8}},23}, {{{192,8}},0},
+    {{{83,7}},51}, {{{0,8}},119}, {{{0,8}},55}, {{{0,9}},206},
+    {{{81,7}},15}, {{{0,8}},103}, {{{0,8}},39}, {{{0,9}},174},
+    {{{0,8}},7}, {{{0,8}},135}, {{{0,8}},71}, {{{0,9}},238},
+    {{{80,7}},9}, {{{0,8}},95}, {{{0,8}},31}, {{{0,9}},158},
+    {{{84,7}},99}, {{{0,8}},127}, {{{0,8}},63}, {{{0,9}},222},
+    {{{82,7}},27}, {{{0,8}},111}, {{{0,8}},47}, {{{0,9}},190},
+    {{{0,8}},15}, {{{0,8}},143}, {{{0,8}},79}, {{{0,9}},254},
+    {{{96,7}},256}, {{{0,8}},80}, {{{0,8}},16}, {{{84,8}},115},
+    {{{82,7}},31}, {{{0,8}},112}, {{{0,8}},48}, {{{0,9}},193},
+    {{{80,7}},10}, {{{0,8}},96}, {{{0,8}},32}, {{{0,9}},161},
+    {{{0,8}},0}, {{{0,8}},128}, {{{0,8}},64}, {{{0,9}},225},
+    {{{80,7}},6}, {{{0,8}},88}, {{{0,8}},24}, {{{0,9}},145},
+    {{{83,7}},59}, {{{0,8}},120}, {{{0,8}},56}, {{{0,9}},209},
+    {{{81,7}},17}, {{{0,8}},104}, {{{0,8}},40}, {{{0,9}},177},
+    {{{0,8}},8}, {{{0,8}},136}, {{{0,8}},72}, {{{0,9}},241},
+    {{{80,7}},4}, {{{0,8}},84}, {{{0,8}},20}, {{{85,8}},227},
+    {{{83,7}},43}, {{{0,8}},116}, {{{0,8}},52}, {{{0,9}},201},
+    {{{81,7}},13}, {{{0,8}},100}, {{{0,8}},36}, {{{0,9}},169},
+    {{{0,8}},4}, {{{0,8}},132}, {{{0,8}},68}, {{{0,9}},233},
+    {{{80,7}},8}, {{{0,8}},92}, {{{0,8}},28}, {{{0,9}},153},
+    {{{84,7}},83}, {{{0,8}},124}, {{{0,8}},60}, {{{0,9}},217},
+    {{{82,7}},23}, {{{0,8}},108}, {{{0,8}},44}, {{{0,9}},185},
+    {{{0,8}},12}, {{{0,8}},140}, {{{0,8}},76}, {{{0,9}},249},
+    {{{80,7}},3}, {{{0,8}},82}, {{{0,8}},18}, {{{85,8}},163},
+    {{{83,7}},35}, {{{0,8}},114}, {{{0,8}},50}, {{{0,9}},197},
+    {{{81,7}},11}, {{{0,8}},98}, {{{0,8}},34}, {{{0,9}},165},
+    {{{0,8}},2}, {{{0,8}},130}, {{{0,8}},66}, {{{0,9}},229},
+    {{{80,7}},7}, {{{0,8}},90}, {{{0,8}},26}, {{{0,9}},149},
+    {{{84,7}},67}, {{{0,8}},122}, {{{0,8}},58}, {{{0,9}},213},
+    {{{82,7}},19}, {{{0,8}},106}, {{{0,8}},42}, {{{0,9}},181},
+    {{{0,8}},10}, {{{0,8}},138}, {{{0,8}},74}, {{{0,9}},245},
+    {{{80,7}},5}, {{{0,8}},86}, {{{0,8}},22}, {{{192,8}},0},
+    {{{83,7}},51}, {{{0,8}},118}, {{{0,8}},54}, {{{0,9}},205},
+    {{{81,7}},15}, {{{0,8}},102}, {{{0,8}},38}, {{{0,9}},173},
+    {{{0,8}},6}, {{{0,8}},134}, {{{0,8}},70}, {{{0,9}},237},
+    {{{80,7}},9}, {{{0,8}},94}, {{{0,8}},30}, {{{0,9}},157},
+    {{{84,7}},99}, {{{0,8}},126}, {{{0,8}},62}, {{{0,9}},221},
+    {{{82,7}},27}, {{{0,8}},110}, {{{0,8}},46}, {{{0,9}},189},
+    {{{0,8}},14}, {{{0,8}},142}, {{{0,8}},78}, {{{0,9}},253},
+    {{{96,7}},256}, {{{0,8}},81}, {{{0,8}},17}, {{{85,8}},131},
+    {{{82,7}},31}, {{{0,8}},113}, {{{0,8}},49}, {{{0,9}},195},
+    {{{80,7}},10}, {{{0,8}},97}, {{{0,8}},33}, {{{0,9}},163},
+    {{{0,8}},1}, {{{0,8}},129}, {{{0,8}},65}, {{{0,9}},227},
+    {{{80,7}},6}, {{{0,8}},89}, {{{0,8}},25}, {{{0,9}},147},
+    {{{83,7}},59}, {{{0,8}},121}, {{{0,8}},57}, {{{0,9}},211},
+    {{{81,7}},17}, {{{0,8}},105}, {{{0,8}},41}, {{{0,9}},179},
+    {{{0,8}},9}, {{{0,8}},137}, {{{0,8}},73}, {{{0,9}},243},
+    {{{80,7}},4}, {{{0,8}},85}, {{{0,8}},21}, {{{80,8}},258},
+    {{{83,7}},43}, {{{0,8}},117}, {{{0,8}},53}, {{{0,9}},203},
+    {{{81,7}},13}, {{{0,8}},101}, {{{0,8}},37}, {{{0,9}},171},
+    {{{0,8}},5}, {{{0,8}},133}, {{{0,8}},69}, {{{0,9}},235},
+    {{{80,7}},8}, {{{0,8}},93}, {{{0,8}},29}, {{{0,9}},155},
+    {{{84,7}},83}, {{{0,8}},125}, {{{0,8}},61}, {{{0,9}},219},
+    {{{82,7}},23}, {{{0,8}},109}, {{{0,8}},45}, {{{0,9}},187},
+    {{{0,8}},13}, {{{0,8}},141}, {{{0,8}},77}, {{{0,9}},251},
+    {{{80,7}},3}, {{{0,8}},83}, {{{0,8}},19}, {{{85,8}},195},
+    {{{83,7}},35}, {{{0,8}},115}, {{{0,8}},51}, {{{0,9}},199},
+    {{{81,7}},11}, {{{0,8}},99}, {{{0,8}},35}, {{{0,9}},167},
+    {{{0,8}},3}, {{{0,8}},131}, {{{0,8}},67}, {{{0,9}},231},
+    {{{80,7}},7}, {{{0,8}},91}, {{{0,8}},27}, {{{0,9}},151},
+    {{{84,7}},67}, {{{0,8}},123}, {{{0,8}},59}, {{{0,9}},215},
+    {{{82,7}},19}, {{{0,8}},107}, {{{0,8}},43}, {{{0,9}},183},
+    {{{0,8}},11}, {{{0,8}},139}, {{{0,8}},75}, {{{0,9}},247},
+    {{{80,7}},5}, {{{0,8}},87}, {{{0,8}},23}, {{{192,8}},0},
+    {{{83,7}},51}, {{{0,8}},119}, {{{0,8}},55}, {{{0,9}},207},
+    {{{81,7}},15}, {{{0,8}},103}, {{{0,8}},39}, {{{0,9}},175},
+    {{{0,8}},7}, {{{0,8}},135}, {{{0,8}},71}, {{{0,9}},239},
+    {{{80,7}},9}, {{{0,8}},95}, {{{0,8}},31}, {{{0,9}},159},
+    {{{84,7}},99}, {{{0,8}},127}, {{{0,8}},63}, {{{0,9}},223},
+    {{{82,7}},27}, {{{0,8}},111}, {{{0,8}},47}, {{{0,9}},191},
+    {{{0,8}},15}, {{{0,8}},143}, {{{0,8}},79}, {{{0,9}},255}
+  };
+local inflate_huft fixed_td[] = {
+    {{{80,5}},1}, {{{87,5}},257}, {{{83,5}},17}, {{{91,5}},4097},
+    {{{81,5}},5}, {{{89,5}},1025}, {{{85,5}},65}, {{{93,5}},16385},
+    {{{80,5}},3}, {{{88,5}},513}, {{{84,5}},33}, {{{92,5}},8193},
+    {{{82,5}},9}, {{{90,5}},2049}, {{{86,5}},129}, {{{192,5}},24577},
+    {{{80,5}},2}, {{{87,5}},385}, {{{83,5}},25}, {{{91,5}},6145},
+    {{{81,5}},7}, {{{89,5}},1537}, {{{85,5}},97}, {{{93,5}},24577},
+    {{{80,5}},4}, {{{88,5}},769}, {{{84,5}},49}, {{{92,5}},12289},
+    {{{82,5}},13}, {{{90,5}},3073}, {{{86,5}},193}, {{{192,5}},24577}
+  };
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/inflate.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,368 @@
+/* inflate.c -- zlib interface to inflate modules
+ * Copyright (C) 1995-2002 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h 
+ */
+
+#include <zlib/zutil.h>
+#include "infblock.h"
+
+struct inflate_blocks_state {int dummy;}; /* for buggy compilers */
+
+typedef enum {
+      METHOD,   /* waiting for method byte */
+      FLAG,     /* waiting for flag byte */
+      DICT4,    /* four dictionary check bytes to go */
+      DICT3,    /* three dictionary check bytes to go */
+      DICT2,    /* two dictionary check bytes to go */
+      DICT1,    /* one dictionary check byte to go */
+      DICT0,    /* waiting for inflateSetDictionary */
+      BLOCKS,   /* decompressing blocks */
+      CHECK4,   /* four check bytes to go */
+      CHECK3,   /* three check bytes to go */
+      CHECK2,   /* two check bytes to go */
+      CHECK1,   /* one check byte to go */
+      DONE,     /* finished check, done */
+      BAD}      /* got an error--stay here */
+inflate_mode;
+
+/* inflate private state */
+struct internal_state {
+
+  /* mode */
+  inflate_mode  mode;   /* current inflate mode */
+
+  /* mode dependent information */
+  union {
+    uInt method;        /* if FLAGS, method byte */
+    struct {
+      uLong was;                /* computed check value */
+      uLong need;               /* stream check value */
+    } check;            /* if CHECK, check values to compare */
+    uInt marker;        /* if BAD, inflateSync's marker bytes count */
+  } sub;        /* submode */
+
+  /* mode independent information */
+  int  nowrap;          /* flag for no wrapper */
+  uInt wbits;           /* log2(window size)  (8..15, defaults to 15) */
+  inflate_blocks_statef 
+    *blocks;            /* current inflate_blocks state */
+
+};
+
+
+int ZEXPORT inflateReset(z)
+z_streamp z;
+{
+  if (z == Z_NULL || z->state == Z_NULL)
+    return Z_STREAM_ERROR;
+  z->total_in = z->total_out = 0;
+  z->msg = Z_NULL;
+  z->state->mode = z->state->nowrap ? BLOCKS : METHOD;
+  inflate_blocks_reset(z->state->blocks, z, Z_NULL);
+  Tracev((stderr, "inflate: reset\n"));
+  return Z_OK;
+}
+
+
+int ZEXPORT inflateEnd(z)
+z_streamp z;
+{
+  if (z == Z_NULL || z->state == Z_NULL || z->zfree == Z_NULL)
+    return Z_STREAM_ERROR;
+  if (z->state->blocks != Z_NULL)
+    inflate_blocks_free(z->state->blocks, z);
+  ZFREE(z, z->state);
+  z->state = Z_NULL;
+  Tracev((stderr, "inflate: end\n"));
+  return Z_OK;
+}
+
+
+int ZEXPORT inflateInit2_(z, w, version, stream_size)
+z_streamp z;
+int w;
+const char *version;
+int stream_size;
+{
+  if (version == Z_NULL || version[0] != ZLIB_VERSION[0] ||
+      stream_size != sizeof(z_stream))
+      return Z_VERSION_ERROR;
+
+  /* initialize state */
+  if (z == Z_NULL)
+    return Z_STREAM_ERROR;
+  z->msg = Z_NULL;
+  if (z->zalloc == Z_NULL)
+  {
+    return Z_STREAM_ERROR;
+/*    z->zalloc = zcalloc;
+    z->opaque = (voidpf)0;
+*/
+  }
+  if (z->zfree == Z_NULL) return Z_STREAM_ERROR; /* z->zfree = zcfree; */
+  if ((z->state = (struct internal_state FAR *)
+       ZALLOC(z,1,sizeof(struct internal_state))) == Z_NULL)
+    return Z_MEM_ERROR;
+  z->state->blocks = Z_NULL;
+
+  /* handle undocumented nowrap option (no zlib header or check) */
+  z->state->nowrap = 0;
+  if (w < 0)
+  {
+    w = - w;
+    z->state->nowrap = 1;
+  }
+
+  /* set window size */
+  if (w < 8 || w > 15)
+  {
+    inflateEnd(z);
+    return Z_STREAM_ERROR;
+  }
+  z->state->wbits = (uInt)w;
+
+  /* create inflate_blocks state */
+  if ((z->state->blocks =
+      inflate_blocks_new(z, z->state->nowrap ? Z_NULL : adler32, (uInt)1 << w))
+      == Z_NULL)
+  {
+    inflateEnd(z);
+    return Z_MEM_ERROR;
+  }
+  Tracev((stderr, "inflate: allocated\n"));
+
+  /* reset state */
+  inflateReset(z);
+  return Z_OK;
+}
+
+
+int ZEXPORT inflateInit_(z, version, stream_size)
+z_streamp z;
+const char *version;
+int stream_size;
+{
+  return inflateInit2_(z, DEF_WBITS, version, stream_size);
+}
+
+
+#define NEEDBYTE {if(z->avail_in==0)return r;r=f;}
+#define NEXTBYTE (z->avail_in--,z->total_in++,*z->next_in++)
+
+int ZEXPORT inflate(z, f)
+z_streamp z;
+int f;
+{
+  int r;
+  uInt b;
+
+  if (z == Z_NULL || z->state == Z_NULL || z->next_in == Z_NULL)
+    return Z_STREAM_ERROR;
+  f = f == Z_FINISH ? Z_BUF_ERROR : Z_OK;
+  r = Z_BUF_ERROR;
+  while (1) switch (z->state->mode)
+  {
+    case METHOD:
+      NEEDBYTE
+      if (((z->state->sub.method = NEXTBYTE) & 0xf) != Z_DEFLATED)
+      {
+        z->state->mode = BAD;
+        z->msg = (char*)"unknown compression method";
+        z->state->sub.marker = 5;       /* can't try inflateSync */
+        break;
+      }
+      if ((z->state->sub.method >> 4) + 8 > z->state->wbits)
+      {
+        z->state->mode = BAD;
+        z->msg = (char*)"invalid window size";
+        z->state->sub.marker = 5;       /* can't try inflateSync */
+        break;
+      }
+      z->state->mode = FLAG;
+    case FLAG:
+      NEEDBYTE
+      b = NEXTBYTE;
+      if (((z->state->sub.method << 8) + b) % 31)
+      {
+        z->state->mode = BAD;
+        z->msg = (char*)"incorrect header check";
+        z->state->sub.marker = 5;       /* can't try inflateSync */
+        break;
+      }
+      Tracev((stderr, "inflate: zlib header ok\n"));
+      if (!(b & PRESET_DICT))
+      {
+        z->state->mode = BLOCKS;
+        break;
+      }
+      z->state->mode = DICT4;
+    case DICT4:
+      NEEDBYTE
+      z->state->sub.check.need = (uLong)NEXTBYTE << 24;
+      z->state->mode = DICT3;
+    case DICT3:
+      NEEDBYTE
+      z->state->sub.check.need += (uLong)NEXTBYTE << 16;
+      z->state->mode = DICT2;
+    case DICT2:
+      NEEDBYTE
+      z->state->sub.check.need += (uLong)NEXTBYTE << 8;
+      z->state->mode = DICT1;
+    case DICT1:
+      NEEDBYTE
+      z->state->sub.check.need += (uLong)NEXTBYTE;
+      z->adler = z->state->sub.check.need;
+      z->state->mode = DICT0;
+      return Z_NEED_DICT;
+    case DICT0:
+      z->state->mode = BAD;
+      z->msg = (char*)"need dictionary";
+      z->state->sub.marker = 0;       /* can try inflateSync */
+      return Z_STREAM_ERROR;
+    case BLOCKS:
+      r = inflate_blocks(z->state->blocks, z, r);
+      if (r == Z_DATA_ERROR)
+      {
+        z->state->mode = BAD;
+        z->state->sub.marker = 0;       /* can try inflateSync */
+        break;
+      }
+      if (r == Z_OK)
+        r = f;
+      if (r != Z_STREAM_END)
+        return r;
+      r = f;
+      inflate_blocks_reset(z->state->blocks, z, &z->state->sub.check.was);
+      if (z->state->nowrap)
+      {
+        z->state->mode = DONE;
+        break;
+      }
+      z->state->mode = CHECK4;
+    case CHECK4:
+      NEEDBYTE
+      z->state->sub.check.need = (uLong)NEXTBYTE << 24;
+      z->state->mode = CHECK3;
+    case CHECK3:
+      NEEDBYTE
+      z->state->sub.check.need += (uLong)NEXTBYTE << 16;
+      z->state->mode = CHECK2;
+    case CHECK2:
+      NEEDBYTE
+      z->state->sub.check.need += (uLong)NEXTBYTE << 8;
+      z->state->mode = CHECK1;
+    case CHECK1:
+      NEEDBYTE
+      z->state->sub.check.need += (uLong)NEXTBYTE;
+
+      if (z->state->sub.check.was != z->state->sub.check.need)
+      {
+        z->state->mode = BAD;
+        z->msg = (char*)"incorrect data check";
+        z->state->sub.marker = 5;       /* can't try inflateSync */
+        break;
+      }
+      Tracev((stderr, "inflate: zlib check ok\n"));
+      z->state->mode = DONE;
+    case DONE:
+      return Z_STREAM_END;
+    case BAD:
+      return Z_DATA_ERROR;
+    default:
+      return Z_STREAM_ERROR;
+  }
+#ifdef NEED_DUMMY_RETURN
+  return Z_STREAM_ERROR;  /* Some dumb compilers complain without this */
+#endif
+}
+
+
+int ZEXPORT inflateSetDictionary(z, dictionary, dictLength)
+z_streamp z;
+const Bytef *dictionary;
+uInt  dictLength;
+{
+  uInt length = dictLength;
+
+  if (z == Z_NULL || z->state == Z_NULL || z->state->mode != DICT0)
+    return Z_STREAM_ERROR;
+
+  if (adler32(1L, dictionary, dictLength) != z->adler) return Z_DATA_ERROR;
+  z->adler = 1L;
+
+  if (length >= ((uInt)1<<z->state->wbits))
+  {
+    length = (1<<z->state->wbits)-1;
+    dictionary += dictLength - length;
+  }
+  inflate_set_dictionary(z->state->blocks, dictionary, length);
+  z->state->mode = BLOCKS;
+  return Z_OK;
+}
+
+
+int ZEXPORT inflateSync(z)
+z_streamp z;
+{
+  uInt n;       /* number of bytes to look at */
+  Bytef *p;     /* pointer to bytes */
+  uInt m;       /* number of marker bytes found in a row */
+  uLong r, w;   /* temporaries to save total_in and total_out */
+
+  /* set up */
+  if (z == Z_NULL || z->state == Z_NULL)
+    return Z_STREAM_ERROR;
+  if (z->state->mode != BAD)
+  {
+    z->state->mode = BAD;
+    z->state->sub.marker = 0;
+  }
+  if ((n = z->avail_in) == 0)
+    return Z_BUF_ERROR;
+  p = z->next_in;
+  m = z->state->sub.marker;
+
+  /* search */
+  while (n && m < 4)
+  {
+    static const Byte mark[4] = {0, 0, 0xff, 0xff};
+    if (*p == mark[m])
+      m++;
+    else if (*p)
+      m = 0;
+    else
+      m = 4 - m;
+    p++, n--;
+  }
+
+  /* restore */
+  z->total_in += p - z->next_in;
+  z->next_in = p;
+  z->avail_in = n;
+  z->state->sub.marker = m;
+
+  /* return no joy or set up to restart on a new block */
+  if (m != 4)
+    return Z_DATA_ERROR;
+  r = z->total_in;  w = z->total_out;
+  inflateReset(z);
+  z->total_in = r;  z->total_out = w;
+  z->state->mode = BLOCKS;
+  return Z_OK;
+}
+
+
+/* Returns true if inflate is currently at the end of a block generated
+ * by Z_SYNC_FLUSH or Z_FULL_FLUSH. This function is used by one PPP
+ * implementation to provide an additional safety check. PPP uses Z_SYNC_FLUSH
+ * but removes the length bytes of the resulting empty stored block. When
+ * decompressing, PPP checks that at the end of input packet, inflate is
+ * waiting for these length bytes.
+ */
+int ZEXPORT inflateSyncPoint(z)
+z_streamp z;
+{
+  if (z == Z_NULL || z->state == Z_NULL || z->state->blocks == Z_NULL)
+    return Z_STREAM_ERROR;
+  return inflate_blocks_sync_point(z->state->blocks);
+}
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/inftrees.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,454 @@
+/* inftrees.c -- generate Huffman trees for efficient decoding
+ * Copyright (C) 1995-2002 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h 
+ */
+
+#include <zlib/zutil.h>
+#include "inftrees.h"
+
+#if !defined(BUILDFIXED) && !defined(STDC)
+#  define BUILDFIXED   /* non ANSI compilers may not accept inffixed.h */
+#endif
+
+local const char inflate_copyright[] =
+   " inflate 1.1.4 Copyright 1995-2002 Mark Adler ";
+/*
+  If you use the zlib library in a product, an acknowledgment is welcome
+  in the documentation of your product. If for some reason you cannot
+  include such an acknowledgment, I would appreciate that you keep this
+  copyright string in the executable of your product.
+ */
+struct internal_state  {int dummy;}; /* for buggy compilers */
+
+/* simplify the use of the inflate_huft type with some defines */
+#define exop word.what.Exop
+#define bits word.what.Bits
+
+
+local int huft_build OF((
+    uIntf *,            /* code lengths in bits */
+    uInt,               /* number of codes */
+    uInt,               /* number of "simple" codes */
+    const uIntf *,      /* list of base values for non-simple codes */
+    const uIntf *,      /* list of extra bits for non-simple codes */
+    inflate_huft * FAR*,/* result: starting table */
+    uIntf *,            /* maximum lookup bits (returns actual) */
+    inflate_huft *,     /* space for trees */
+    uInt *,             /* hufts used in space */
+    uIntf * ));         /* space for values */
+
+/* Tables for deflate from PKZIP's appnote.txt. */
+local const uInt cplens[31] = { /* Copy lengths for literal codes 257..285 */
+        3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31,
+        35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0};
+        /* see note #13 above about 258 */
+local const uInt cplext[31] = { /* Extra bits for literal codes 257..285 */
+        0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2,
+        3, 3, 3, 3, 4, 4, 4, 4, 5, 5, 5, 5, 0, 112, 112}; /* 112==invalid */
+local const uInt cpdist[30] = { /* Copy offsets for distance codes 0..29 */
+        1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193,
+        257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145,
+        8193, 12289, 16385, 24577};
+local const uInt cpdext[30] = { /* Extra bits for distance codes */
+        0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 6,
+        7, 7, 8, 8, 9, 9, 10, 10, 11, 11,
+        12, 12, 13, 13};
+
+/*
+   Huffman code decoding is performed using a multi-level table lookup.
+   The fastest way to decode is to simply build a lookup table whose
+   size is determined by the longest code.  However, the time it takes
+   to build this table can also be a factor if the data being decoded
+   is not very long.  The most common codes are necessarily the
+   shortest codes, so those codes dominate the decoding time, and hence
+   the speed.  The idea is you can have a shorter table that decodes the
+   shorter, more probable codes, and then point to subsidiary tables for
+   the longer codes.  The time it costs to decode the longer codes is
+   then traded against the time it takes to make longer tables.
+
+   This results of this trade are in the variables lbits and dbits
+   below.  lbits is the number of bits the first level table for literal/
+   length codes can decode in one step, and dbits is the same thing for
+   the distance codes.  Subsequent tables are also less than or equal to
+   those sizes.  These values may be adjusted either when all of the
+   codes are shorter than that, in which case the longest code length in
+   bits is used, or when the shortest code is *longer* than the requested
+   table size, in which case the length of the shortest code in bits is
+   used.
+
+   There are two different values for the two tables, since they code a
+   different number of possibilities each.  The literal/length table
+   codes 286 possible values, or in a flat code, a little over eight
+   bits.  The distance table codes 30 possible values, or a little less
+   than five bits, flat.  The optimum values for speed end up being
+   about one bit more than those, so lbits is 8+1 and dbits is 5+1.
+   The optimum values may differ though from machine to machine, and
+   possibly even between compilers.  Your mileage may vary.
+ */
+
+
+/* If BMAX needs to be larger than 16, then h and x[] should be uLong. */
+#define BMAX 15         /* maximum bit length of any code */
+
+local int huft_build(b, n, s, d, e, t, m, hp, hn, v)
+uIntf *b;               /* code lengths in bits (all assumed <= BMAX) */
+uInt n;                 /* number of codes (assumed <= 288) */
+uInt s;                 /* number of simple-valued codes (0..s-1) */
+const uIntf *d;         /* list of base values for non-simple codes */
+const uIntf *e;         /* list of extra bits for non-simple codes */
+inflate_huft * FAR *t;  /* result: starting table */
+uIntf *m;               /* maximum lookup bits, returns actual */
+inflate_huft *hp;       /* space for trees */
+uInt *hn;               /* hufts used in space */
+uIntf *v;               /* working area: values in order of bit length */
+/* Given a list of code lengths and a maximum table size, make a set of
+   tables to decode that set of codes.  Return Z_OK on success, Z_BUF_ERROR
+   if the given code set is incomplete (the tables are still built in this
+   case), or Z_DATA_ERROR if the input is invalid. */
+{
+
+  uInt a;                       /* counter for codes of length k */
+  uInt c[BMAX+1];               /* bit length count table */
+  uInt f;                       /* i repeats in table every f entries */
+  int g;                        /* maximum code length */
+  int h;                        /* table level */
+  register uInt i;              /* counter, current code */
+  register uInt j;              /* counter */
+  register int k;               /* number of bits in current code */
+  int l;                        /* bits per table (returned in m) */
+  uInt mask;                    /* (1 << w) - 1, to avoid cc -O bug on HP */
+  register uIntf *p;            /* pointer into c[], b[], or v[] */
+  inflate_huft *q;              /* points to current table */
+  struct inflate_huft_s r;      /* table entry for structure assignment */
+  inflate_huft *u[BMAX];        /* table stack */
+  register int w;               /* bits before this table == (l * h) */
+  uInt x[BMAX+1];               /* bit offsets, then code stack */
+  uIntf *xp;                    /* pointer into x */
+  int y;                        /* number of dummy codes added */
+  uInt z;                       /* number of entries in current table */
+
+
+  /* Generate counts for each bit length */
+  p = c;
+#define C0 *p++ = 0;
+#define C2 C0 C0 C0 C0
+#define C4 C2 C2 C2 C2
+  C4                            /* clear c[]--assume BMAX+1 is 16 */
+  p = b;  i = n;
+  do {
+    c[*p++]++;                  /* assume all entries <= BMAX */
+  } while (--i);
+  if (c[0] == n)                /* null input--all zero length codes */
+  {
+    *t = (inflate_huft *)Z_NULL;
+    *m = 0;
+    return Z_OK;
+  }
+
+
+  /* Find minimum and maximum length, bound *m by those */
+  l = *m;
+  for (j = 1; j <= BMAX; j++)
+    if (c[j])
+      break;
+  k = j;                        /* minimum code length */
+  if ((uInt)l < j)
+    l = j;
+  for (i = BMAX; i; i--)
+    if (c[i])
+      break;
+  g = i;                        /* maximum code length */
+  if ((uInt)l > i)
+    l = i;
+  *m = l;
+
+
+  /* Adjust last length count to fill out codes, if needed */
+  for (y = 1 << j; j < i; j++, y <<= 1)
+    if ((y -= c[j]) < 0)
+      return Z_DATA_ERROR;
+  if ((y -= c[i]) < 0)
+    return Z_DATA_ERROR;
+  c[i] += y;
+
+
+  /* Generate starting offsets into the value table for each length */
+  x[1] = j = 0;
+  p = c + 1;  xp = x + 2;
+  while (--i) {                 /* note that i == g from above */
+    *xp++ = (j += *p++);
+  }
+
+
+  /* Make a table of values in order of bit lengths */
+  p = b;  i = 0;
+  do {
+    if ((j = *p++) != 0)
+      v[x[j]++] = i;
+  } while (++i < n);
+  n = x[g];                     /* set n to length of v */
+
+
+  /* Generate the Huffman codes and for each, make the table entries */
+  x[0] = i = 0;                 /* first Huffman code is zero */
+  p = v;                        /* grab values in bit order */
+  h = -1;                       /* no tables yet--level -1 */
+  w = -l;                       /* bits decoded == (l * h) */
+  u[0] = (inflate_huft *)Z_NULL;        /* just to keep compilers happy */
+  q = (inflate_huft *)Z_NULL;   /* ditto */
+  z = 0;                        /* ditto */
+
+  /* go through the bit lengths (k already is bits in shortest code) */
+  for (; k <= g; k++)
+  {
+    a = c[k];
+    while (a--)
+    {
+      /* here i is the Huffman code of length k bits for value *p */
+      /* make tables up to required level */
+      while (k > w + l)
+      {
+        h++;
+        w += l;                 /* previous table always l bits */
+
+        /* compute minimum size table less than or equal to l bits */
+        z = g - w;
+        z = z > (uInt)l ? l : z;        /* table size upper limit */
+        if ((f = 1 << (j = k - w)) > a + 1)     /* try a k-w bit table */
+        {                       /* too few codes for k-w bit table */
+          f -= a + 1;           /* deduct codes from patterns left */
+          xp = c + k;
+          if (j < z)
+            while (++j < z)     /* try smaller tables up to z bits */
+            {
+              if ((f <<= 1) <= *++xp)
+                break;          /* enough codes to use up j bits */
+              f -= *xp;         /* else deduct codes from patterns */
+            }
+        }
+        z = 1 << j;             /* table entries for j-bit table */
+
+        /* allocate new table */
+        if (*hn + z > MANY)     /* (note: doesn't matter for fixed) */
+          return Z_DATA_ERROR;  /* overflow of MANY */
+        u[h] = q = hp + *hn;
+        *hn += z;
+
+        /* connect to last table, if there is one */
+        if (h)
+        {
+          x[h] = i;             /* save pattern for backing up */
+          r.bits = (Byte)l;     /* bits to dump before this table */
+          r.exop = (Byte)j;     /* bits in this table */
+          j = i >> (w - l);
+          r.base = (uInt)(q - u[h-1] - j);   /* offset to this table */
+          u[h-1][j] = r;        /* connect to last table */
+        }
+        else
+          *t = q;               /* first table is returned result */
+      }
+
+      /* set up table entry in r */
+      r.bits = (Byte)(k - w);
+      if (p >= v + n)
+        r.exop = 128 + 64;      /* out of values--invalid code */
+      else if (*p < s)
+      {
+        r.exop = (Byte)(*p < 256 ? 0 : 32 + 64);     /* 256 is end-of-block */
+        r.base = *p++;          /* simple code is just the value */
+      }
+      else
+      {
+        r.exop = (Byte)(e[*p - s] + 16 + 64);/* non-simple--look up in lists */
+        r.base = d[*p++ - s];
+      }
+
+      /* fill code-like entries with r */
+      f = 1 << (k - w);
+      for (j = i >> w; j < z; j += f)
+        q[j] = r;
+
+      /* backwards increment the k-bit code i */
+      for (j = 1 << (k - 1); i & j; j >>= 1)
+        i ^= j;
+      i ^= j;
+
+      /* backup over finished tables */
+      mask = (1 << w) - 1;      /* needed on HP, cc -O bug */
+      while ((i & mask) != x[h])
+      {
+        h--;                    /* don't need to update q */
+        w -= l;
+        mask = (1 << w) - 1;
+      }
+    }
+  }
+
+
+  /* Return Z_BUF_ERROR if we were given an incomplete table */
+  return y != 0 && g != 1 ? Z_BUF_ERROR : Z_OK;
+}
+
+
+int inflate_trees_bits(c, bb, tb, hp, z)
+uIntf *c;               /* 19 code lengths */
+uIntf *bb;              /* bits tree desired/actual depth */
+inflate_huft * FAR *tb; /* bits tree result */
+inflate_huft *hp;       /* space for trees */
+z_streamp z;            /* for messages */
+{
+  int r;
+  uInt hn = 0;          /* hufts used in space */
+  uIntf *v;             /* work area for huft_build */
+
+  if ((v = (uIntf*)ZALLOC(z, 19, sizeof(uInt))) == Z_NULL)
+    return Z_MEM_ERROR;
+  r = huft_build(c, 19, 19, (uIntf*)Z_NULL, (uIntf*)Z_NULL,
+                 tb, bb, hp, &hn, v);
+  if (r == Z_DATA_ERROR)
+    z->msg = (char*)"oversubscribed dynamic bit lengths tree";
+  else if (r == Z_BUF_ERROR || *bb == 0)
+  {
+    z->msg = (char*)"incomplete dynamic bit lengths tree";
+    r = Z_DATA_ERROR;
+  }
+  ZFREE(z, v);
+  return r;
+}
+
+
+int inflate_trees_dynamic(nl, nd, c, bl, bd, tl, td, hp, z)
+uInt nl;                /* number of literal/length codes */
+uInt nd;                /* number of distance codes */
+uIntf *c;               /* that many (total) code lengths */
+uIntf *bl;              /* literal desired/actual bit depth */
+uIntf *bd;              /* distance desired/actual bit depth */
+inflate_huft * FAR *tl; /* literal/length tree result */
+inflate_huft * FAR *td; /* distance tree result */
+inflate_huft *hp;       /* space for trees */
+z_streamp z;            /* for messages */
+{
+  int r;
+  uInt hn = 0;          /* hufts used in space */
+  uIntf *v;             /* work area for huft_build */
+
+  /* allocate work area */
+  if ((v = (uIntf*)ZALLOC(z, 288, sizeof(uInt))) == Z_NULL)
+    return Z_MEM_ERROR;
+
+  /* build literal/length tree */
+  r = huft_build(c, nl, 257, cplens, cplext, tl, bl, hp, &hn, v);
+  if (r != Z_OK || *bl == 0)
+  {
+    if (r == Z_DATA_ERROR)
+      z->msg = (char*)"oversubscribed literal/length tree";
+    else if (r != Z_MEM_ERROR)
+    {
+      z->msg = (char*)"incomplete literal/length tree";
+      r = Z_DATA_ERROR;
+    }
+    ZFREE(z, v);
+    return r;
+  }
+
+  /* build distance tree */
+  r = huft_build(c + nl, nd, 0, cpdist, cpdext, td, bd, hp, &hn, v);
+  if (r != Z_OK || (*bd == 0 && nl > 257))
+  {
+    if (r == Z_DATA_ERROR)
+      z->msg = (char*)"oversubscribed distance tree";
+    else if (r == Z_BUF_ERROR) {
+#ifdef PKZIP_BUG_WORKAROUND
+      r = Z_OK;
+    }
+#else
+      z->msg = (char*)"incomplete distance tree";
+      r = Z_DATA_ERROR;
+    }
+    else if (r != Z_MEM_ERROR)
+    {
+      z->msg = (char*)"empty distance tree with lengths";
+      r = Z_DATA_ERROR;
+    }
+    ZFREE(z, v);
+    return r;
+#endif
+  }
+
+  /* done */
+  ZFREE(z, v);
+  return Z_OK;
+}
+
+
+/* build fixed tables only once--keep them here */
+#ifdef BUILDFIXED
+local int fixed_built = 0;
+#define FIXEDH 544      /* number of hufts used by fixed tables */
+local inflate_huft fixed_mem[FIXEDH];
+local uInt fixed_bl;
+local uInt fixed_bd;
+local inflate_huft *fixed_tl;
+local inflate_huft *fixed_td;
+#else
+#include "inffixed.h"
+#endif
+
+
+int inflate_trees_fixed(bl, bd, tl, td, z)
+uIntf *bl;               /* literal desired/actual bit depth */
+uIntf *bd;               /* distance desired/actual bit depth */
+inflate_huft * FAR *tl;  /* literal/length tree result */
+inflate_huft * FAR *td;  /* distance tree result */
+z_streamp z;             /* for memory allocation */
+{
+#ifdef BUILDFIXED
+  /* build fixed tables if not already */
+  if (!fixed_built)
+  {
+    int k;              /* temporary variable */
+    uInt f = 0;         /* number of hufts used in fixed_mem */
+    uIntf *c;           /* length list for huft_build */
+    uIntf *v;           /* work area for huft_build */
+
+    /* allocate memory */
+    if ((c = (uIntf*)ZALLOC(z, 288, sizeof(uInt))) == Z_NULL)
+      return Z_MEM_ERROR;
+    if ((v = (uIntf*)ZALLOC(z, 288, sizeof(uInt))) == Z_NULL)
+    {
+      ZFREE(z, c);
+      return Z_MEM_ERROR;
+    }
+
+    /* literal table */
+    for (k = 0; k < 144; k++)
+      c[k] = 8;
+    for (; k < 256; k++)
+      c[k] = 9;
+    for (; k < 280; k++)
+      c[k] = 7;
+    for (; k < 288; k++)
+      c[k] = 8;
+    fixed_bl = 9;
+    huft_build(c, 288, 257, cplens, cplext, &fixed_tl, &fixed_bl,
+               fixed_mem, &f, v);
+
+    /* distance table */
+    for (k = 0; k < 30; k++)
+      c[k] = 5;
+    fixed_bd = 5;
+    huft_build(c, 30, 0, cpdist, cpdext, &fixed_td, &fixed_bd,
+               fixed_mem, &f, v);
+
+    /* done */
+    ZFREE(z, v);
+    ZFREE(z, c);
+    fixed_built = 1;
+  }
+#endif
+  *bl = fixed_bl;
+  *bd = fixed_bd;
+  *tl = fixed_tl;
+  *td = fixed_td;
+  return Z_OK;
+}
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/inftrees.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,63 @@
+/* inftrees.h -- header to use inftrees.c
+ * Copyright (C) 1995-2002 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h 
+ */
+
+/* WARNING: this file should *not* be used by applications. It is
+   part of the implementation of the compression library and is
+   subject to change. Applications should only use zlib.h.
+ */
+
+/* Huffman code lookup table entry--this entry is four bytes for machines
+   that have 16-bit pointers (e.g. PC's in the small or medium model). */
+
+#ifndef _INFTREES_H
+#define _INFTREES_H
+
+typedef struct inflate_huft_s FAR inflate_huft;
+
+struct inflate_huft_s {
+  union {
+    struct {
+      Byte Exop;        /* number of extra bits or operation */
+      Byte Bits;        /* number of bits in this code or subcode */
+    } what;
+    uInt pad;           /* pad structure to a power of 2 (4 bytes for */
+  } word;               /*  16-bit, 8 bytes for 32-bit int's) */
+  uInt base;            /* literal, length base, distance base,
+                           or table offset */
+};
+
+/* Maximum size of dynamic tree.  The maximum found in a long but non-
+   exhaustive search was 1004 huft structures (850 for length/literals
+   and 154 for distances, the latter actually the result of an
+   exhaustive search).  The actual maximum is not known, but the
+   value below is more than safe. */
+#define MANY 1440
+
+extern int inflate_trees_bits OF((
+    uIntf *,                    /* 19 code lengths */
+    uIntf *,                    /* bits tree desired/actual depth */
+    inflate_huft * FAR *,       /* bits tree result */
+    inflate_huft *,             /* space for trees */
+    z_streamp));                /* for messages */
+
+extern int inflate_trees_dynamic OF((
+    uInt,                       /* number of literal/length codes */
+    uInt,                       /* number of distance codes */
+    uIntf *,                    /* that many (total) code lengths */
+    uIntf *,                    /* literal desired/actual bit depth */
+    uIntf *,                    /* distance desired/actual bit depth */
+    inflate_huft * FAR *,       /* literal/length tree result */
+    inflate_huft * FAR *,       /* distance tree result */
+    inflate_huft *,             /* space for trees */
+    z_streamp));                /* for messages */
+
+extern int inflate_trees_fixed OF((
+    uIntf *,                    /* literal desired/actual bit depth */
+    uIntf *,                    /* distance desired/actual bit depth */
+    inflate_huft * FAR *,       /* literal/length tree result */
+    inflate_huft * FAR *,       /* distance tree result */
+    z_streamp));                /* for memory allocation */
+
+#endif /* _INFTREES_H */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/infutil.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,87 @@
+/* inflate_util.c -- data and routines common to blocks and codes
+ * Copyright (C) 1995-2002 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h 
+ */
+
+#include <zlib/zutil.h>
+#include "infblock.h"
+#include "inftrees.h"
+#include "infcodes.h"
+#include "infutil.h"
+
+struct inflate_codes_state {int dummy;}; /* for buggy compilers */
+
+/* And'ing with mask[n] masks the lower n bits */
+uInt inflate_mask[17] = {
+    0x0000,
+    0x0001, 0x0003, 0x0007, 0x000f, 0x001f, 0x003f, 0x007f, 0x00ff,
+    0x01ff, 0x03ff, 0x07ff, 0x0fff, 0x1fff, 0x3fff, 0x7fff, 0xffff
+};
+
+
+/* copy as much as possible from the sliding window to the output area */
+int inflate_flush(s, z, r)
+inflate_blocks_statef *s;
+z_streamp z;
+int r;
+{
+  uInt n;
+  Bytef *p;
+  Bytef *q;
+
+  /* local copies of source and destination pointers */
+  p = z->next_out;
+  q = s->read;
+
+  /* compute number of bytes to copy as far as end of window */
+  n = (uInt)((q <= s->write ? s->write : s->end) - q);
+  if (n > z->avail_out) n = z->avail_out;
+  if (n && r == Z_BUF_ERROR) r = Z_OK;
+
+  /* update counters */
+  z->avail_out -= n;
+  z->total_out += n;
+
+  /* update check information */
+  if (s->checkfn != Z_NULL)
+    z->adler = s->check = (*s->checkfn)(s->check, q, n);
+
+  /* copy as far as end of window */
+  zmemcpy(p, q, n);
+  p += n;
+  q += n;
+
+  /* see if more to copy at beginning of window */
+  if (q == s->end)
+  {
+    /* wrap pointers */
+    q = s->window;
+    if (s->write == s->end)
+      s->write = s->window;
+
+    /* compute bytes to copy */
+    n = (uInt)(s->write - q);
+    if (n > z->avail_out) n = z->avail_out;
+    if (n && r == Z_BUF_ERROR) r = Z_OK;
+
+    /* update counters */
+    z->avail_out -= n;
+    z->total_out += n;
+
+    /* update check information */
+    if (s->checkfn != Z_NULL)
+      z->adler = s->check = (*s->checkfn)(s->check, q, n);
+
+    /* copy */
+    zmemcpy(p, q, n);
+    p += n;
+    q += n;
+  }
+
+  /* update pointers */
+  z->next_out = p;
+  s->read = q;
+
+  /* done */
+  return r;
+}
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/infutil.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,98 @@
+/* infutil.h -- types and macros common to blocks and codes
+ * Copyright (C) 1995-2002 Mark Adler
+ * For conditions of distribution and use, see copyright notice in zlib.h 
+ */
+
+/* WARNING: this file should *not* be used by applications. It is
+   part of the implementation of the compression library and is
+   subject to change. Applications should only use zlib.h.
+ */
+
+#ifndef _INFUTIL_H
+#define _INFUTIL_H
+
+typedef enum {
+      TYPE,     /* get type bits (3, including end bit) */
+      LENS,     /* get lengths for stored */
+      STORED,   /* processing stored block */
+      TABLE,    /* get table lengths */
+      BTREE,    /* get bit lengths tree for a dynamic block */
+      DTREE,    /* get length, distance trees for a dynamic block */
+      CODES,    /* processing fixed or dynamic block */
+      DRY,      /* output remaining window bytes */
+      DONE,     /* finished last block, done */
+      BAD}      /* got a data error--stuck here */
+inflate_block_mode;
+
+/* inflate blocks semi-private state */
+struct inflate_blocks_state {
+
+  /* mode */
+  inflate_block_mode  mode;     /* current inflate_block mode */
+
+  /* mode dependent information */
+  union {
+    uInt left;          /* if STORED, bytes left to copy */
+    struct {
+      uInt table;               /* table lengths (14 bits) */
+      uInt index;               /* index into blens (or border) */
+      uIntf *blens;             /* bit lengths of codes */
+      uInt bb;                  /* bit length tree depth */
+      inflate_huft *tb;         /* bit length decoding tree */
+    } trees;            /* if DTREE, decoding info for trees */
+    struct {
+      inflate_codes_statef 
+         *codes;
+    } decode;           /* if CODES, current state */
+  } sub;                /* submode */
+  uInt last;            /* true if this block is the last block */
+
+  /* mode independent information */
+  uInt bitk;            /* bits in bit buffer */
+  uLong bitb;           /* bit buffer */
+  inflate_huft *hufts;  /* single malloc for tree space */
+  Bytef *window;        /* sliding window */
+  Bytef *end;           /* one byte after sliding window */
+  Bytef *read;          /* window read pointer */
+  Bytef *write;         /* window write pointer */
+  check_func checkfn;   /* check function */
+  uLong check;          /* check on output */
+
+};
+
+
+/* defines for inflate input/output */
+/*   update pointers and return */
+#define UPDBITS {s->bitb=b;s->bitk=k;}
+#define UPDIN {z->avail_in=n;z->total_in+=p-z->next_in;z->next_in=p;}
+#define UPDOUT {s->write=q;}
+#define UPDATE {UPDBITS UPDIN UPDOUT}
+#define LEAVE {UPDATE return inflate_flush(s,z,r);}
+/*   get bytes and bits */
+#define LOADIN {p=z->next_in;n=z->avail_in;b=s->bitb;k=s->bitk;}
+#define NEEDBYTE {if(n)r=Z_OK;else LEAVE}
+#define NEXTBYTE (n--,*p++)
+#define NEEDBITS(j) {while(k<(j)){NEEDBYTE;b|=((uLong)NEXTBYTE)<<k;k+=8;}}
+#define DUMPBITS(j) {b>>=(j);k-=(j);}
+/*   output bytes */
+#define WAVAIL (uInt)(q<s->read?s->read-q-1:s->end-q)
+#define LOADOUT {q=s->write;m=(uInt)WAVAIL;}
+#define WRAP {if(q==s->end&&s->read!=s->window){q=s->window;m=(uInt)WAVAIL;}}
+#define FLUSH {UPDOUT r=inflate_flush(s,z,r); LOADOUT}
+#define NEEDOUT {if(m==0){WRAP if(m==0){FLUSH WRAP if(m==0) LEAVE}}r=Z_OK;}
+#define OUTBYTE(a) {*q++=(Byte)(a);m--;}
+/*   load local pointers */
+#define LOAD {LOADIN LOADOUT}
+
+/* masks for lower bits (size given to avoid silly warnings with Visual C++) */
+extern uInt inflate_mask[17];
+
+/* copy as much as possible from the sliding window to the output area */
+extern int inflate_flush OF((
+    inflate_blocks_statef *,
+    z_streamp ,
+    int));
+
+struct internal_state      {int dummy;}; /* for buggy compilers */
+
+#endif /* _INFUTIL_H */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/initaddr.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,50 @@
+/*
+ * initialize address structure
+ * Copyright (C) 2000  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id: initaddr.c,v 1.6 2004-07-10 07:43:47 mcr Exp $
+ */
+#include "openswan.h"
+
+/*
+ - initaddr - initialize ip_address from bytes
+ */
+err_t                          /* NULL for success, else string literal */
+initaddr(src, srclen, af, dst)
+const unsigned char *src;
+size_t srclen;
+int af;                                /* address family */
+ip_address *dst;
+{
+       switch (af) {
+       case AF_INET:
+               if (srclen != 4)
+                       return "IPv4 address must be exactly 4 bytes";
+               dst->u.v4.sin_family = af;
+               dst->u.v4.sin_port = 0;         /* unused */
+               memcpy((char *)&dst->u.v4.sin_addr.s_addr, src, srclen);
+               break;
+       case AF_INET6:
+               if (srclen != 16)
+                       return "IPv6 address must be exactly 16 bytes";
+               dst->u.v6.sin6_family = af;
+               dst->u.v6.sin6_flowinfo = 0;            /* unused */
+               dst->u.v6.sin6_port = 0;                /* unused */
+               memcpy((char *)&dst->u.v6.sin6_addr, src, srclen);
+               break;
+       default:
+               return "unknown address family in initaddr";
+               break;
+       }
+       return NULL;
+}
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/ipcomp.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,697 @@
+/*
+ * IPCOMP zlib interface code.
+ * Copyright (C) 2000  Svenning Soerensen <svenning@post5.tele.dk>
+ * Copyright (C) 2000, 2001  Richard Guy Briggs <rgb@conscoop.ottawa.on.ca>
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+char ipcomp_c_version[] = "RCSID $Id: ipcomp.c,v 1.41.2.8 2007-10-30 21:33:40 paul Exp $";
+
+/* SSS */
+
+#ifndef AUTOCONF_INCLUDED
+#include <linux/config.h>
+#endif
+#include <linux/version.h>
+
+#define __NO_VERSION__
+#include <linux/module.h>
+#include <linux/kernel.h> /* printk() */
+
+#include "openswan/ipsec_param.h"
+
+#ifdef MALLOC_SLAB
+# include <linux/slab.h> /* kmalloc() */
+#else /* MALLOC_SLAB */
+# include <linux/malloc.h> /* kmalloc() */
+#endif /* MALLOC_SLAB */
+#include <linux/errno.h>  /* error codes */
+#include <linux/types.h>
+#include <linux/netdevice.h>
+#include <linux/ip.h>
+#include <linux/skbuff.h>
+
+#include <linux/netdevice.h>   /* struct device, and other headers */
+#include <linux/etherdevice.h> /* eth_type_trans */
+#include <linux/ip.h>          /* struct iphdr */
+#include <linux/skbuff.h>
+#include <asm/uaccess.h>
+#include <asm/checksum.h>
+
+#include <openswan.h>
+
+#include <net/ip.h>
+
+#include "openswan/radij.h"
+#include "openswan/ipsec_encap.h"
+#include "openswan/ipsec_sa.h"
+
+#include "openswan/ipsec_xform.h"
+#include "openswan/ipsec_tunnel.h"
+#include "openswan/ipsec_rcv.h" /* sysctl_ipsec_inbound_policy_check */
+#include "openswan/ipsec_proto.h"
+#include "openswan/ipcomp.h"
+#include "zlib/zlib.h"
+#include "zlib/zutil.h"
+
+#include <pfkeyv2.h> /* SADB_X_CALG_DEFLATE */
+
+#ifdef CONFIG_KLIPS_DEBUG
+int sysctl_ipsec_debug_ipcomp = 0;
+#endif /* CONFIG_KLIPS_DEBUG */
+
+static
+struct sk_buff *skb_copy_ipcomp(struct sk_buff *skb, int data_growth, int gfp_mask);
+
+static
+voidpf my_zcalloc(voidpf opaque, uInt items, uInt size)
+{
+       return (voidpf) kmalloc(items*size, GFP_ATOMIC);
+}
+
+static
+void my_zfree(voidpf opaque, voidpf address)
+{
+       kfree(address);
+}
+
+/* 
+ * We use this function because sometimes we want to pass a negative offset
+ * into skb_put(), this does not work on 64bit platforms because long to
+ * unsigned int casting.
+ */
+static inline unsigned char *
+safe_skb_put(struct sk_buff *skb, int extend)
+{
+        unsigned char *ptr;
+
+        if (extend>0) {
+                // increase the size of the packet
+                ptr = skb_put(skb, extend);
+        } else {
+                // shrink the size of the packet
+                ptr = skb_tail_pointer(skb);
+                skb_trim (skb, skb->len + extend);
+        }
+
+        return ptr;
+}
+
+struct sk_buff *skb_compress(struct sk_buff *skb, struct ipsec_sa *ips, unsigned int *flags)
+{
+       struct iphdr *iph;
+       unsigned int iphlen, pyldsz, cpyldsz;
+       unsigned char *buffer;
+       z_stream zs;
+       int zresult;
+       
+       KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                   "klips_debug:skb_compress: .\n");
+
+       if(skb == NULL) {
+               KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                           "klips_debug:skb_compress: "
+                           "passed in NULL skb, returning ERROR.\n");
+               if(flags != NULL) {
+                       *flags |= IPCOMP_PARMERROR;
+               }
+               return skb;
+       }
+
+       if(ips == NULL) {
+               KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                           "klips_debug:skb_compress: "
+                           "passed in NULL ipsec_sa needed for cpi, returning ERROR.\n");
+               if(flags) {
+                       *flags |= IPCOMP_PARMERROR;
+               }
+               return skb;
+       }
+
+       if (flags == NULL) {
+               KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                           "klips_debug:skb_compress: "
+                           "passed in NULL flags, returning ERROR.\n");
+               ipsec_kfree_skb(skb);
+               return NULL;
+       }
+       
+#ifdef NET_21
+       iph = ip_hdr(skb);
+#else /* NET_21 */
+       iph = skb->ip_hdr;
+#endif /* NET_21 */
+
+       switch (iph->protocol) {
+       case IPPROTO_COMP:
+       case IPPROTO_AH:
+       case IPPROTO_ESP:
+               KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                           "klips_debug:skb_compress: "
+                           "skipping compression of packet with ip protocol %d.\n",
+                           iph->protocol);
+               *flags |= IPCOMP_UNCOMPRESSABLE;
+               return skb;
+       }
+       
+       /* Don't compress packets already fragmented */
+       if (iph->frag_off & __constant_htons(IP_MF | IP_OFFSET)) {
+               KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                           "klips_debug:skb_compress: "
+                           "skipping compression of fragmented packet.\n");
+               *flags |= IPCOMP_UNCOMPRESSABLE;
+               return skb;
+       }
+       
+       iphlen = iph->ihl << 2;
+       pyldsz = ntohs(iph->tot_len) - iphlen;
+
+       /* Don't compress less than 90 bytes (rfc 2394) */
+       if (pyldsz < 90) {
+               KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                           "klips_debug:skb_compress: "
+                           "skipping compression of tiny packet, len=%d.\n",
+                           pyldsz);
+               *flags |= IPCOMP_UNCOMPRESSABLE;
+               return skb;
+       }
+       
+       /* Adaptive decision */
+       if (ips->ips_comp_adapt_skip) {
+               KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                           "klips_debug:skb_compress: "
+                           "skipping compression: ips_comp_adapt_skip=%d.\n",
+                           ips->ips_comp_adapt_skip);
+               ips->ips_comp_adapt_skip--;
+               *flags |= IPCOMP_UNCOMPRESSABLE;
+               return skb;
+       }
+
+       zs.zalloc = my_zcalloc;
+       zs.zfree = my_zfree;
+       zs.opaque = 0;
+       
+       /* We want to use deflateInit2 because we don't want the adler
+          header. */
+       zresult = deflateInit2(&zs, Z_DEFAULT_COMPRESSION, Z_DEFLATED, -11,
+                              DEF_MEM_LEVEL,  Z_DEFAULT_STRATEGY);
+       if (zresult != Z_OK) {
+               KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                           "klips_error:skb_compress: "
+                           "deflateInit2() returned error %d (%s), "
+                           "skipping compression.\n",
+                           zresult,
+                           zs.msg ? zs.msg : zError(zresult));
+               *flags |= IPCOMP_COMPRESSIONERROR;
+               return skb;
+       }
+       
+
+       /* Max output size. Result should be max this size.
+        * Implementation specific tweak:
+        * If it's not at least 32 bytes and 6.25% smaller than
+        * the original packet, it's probably not worth wasting
+        * the receiver's CPU cycles decompressing it.
+        * Your mileage may vary.
+        */
+       cpyldsz = pyldsz - sizeof(struct ipcomphdr) - (pyldsz <= 512 ? 32 : pyldsz >> 4);
+
+       buffer = kmalloc(cpyldsz, GFP_ATOMIC);
+       if (!buffer) {
+               KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                           "klips_error:skb_compress: "
+                           "unable to kmalloc(%d, GFP_ATOMIC), "
+                           "skipping compression.\n",
+                           cpyldsz);
+               *flags |= IPCOMP_COMPRESSIONERROR;
+               deflateEnd(&zs);
+               return skb;
+       }
+       
+#ifdef CONFIG_KLIPS_DEBUG
+       if(sysctl_ipsec_debug_ipcomp && sysctl_ipsec_debug_verbose) {
+               __u8 *c;
+
+               c = (__u8*)iph + iphlen;
+               ipsec_dmp_block("compress before", c, pyldsz);
+       }
+#endif /* CONFIG_KLIPS_DEBUG */
+
+       zs.next_in = (char *) iph + iphlen; /* start of payload */
+       zs.avail_in = pyldsz;
+       zs.next_out = buffer;     /* start of compressed payload */
+       zs.avail_out = cpyldsz;
+       
+       /* Finish compression in one step */
+       zresult = deflate(&zs, Z_FINISH);
+
+       /* Free all dynamically allocated buffers */
+       deflateEnd(&zs);
+       if (zresult != Z_STREAM_END) {
+               *flags |= IPCOMP_UNCOMPRESSABLE;
+               kfree(buffer);
+
+               /* Adjust adaptive counters */
+               if (++(ips->ips_comp_adapt_tries) == IPCOMP_ADAPT_INITIAL_TRIES) {
+                       KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                                   "klips_debug:skb_compress: "
+                                   "first %d packets didn't compress, "
+                                   "skipping next %d\n",
+                                   IPCOMP_ADAPT_INITIAL_TRIES,
+                                   IPCOMP_ADAPT_INITIAL_SKIP);
+                       ips->ips_comp_adapt_skip = IPCOMP_ADAPT_INITIAL_SKIP;
+               }
+               else if (ips->ips_comp_adapt_tries == IPCOMP_ADAPT_INITIAL_TRIES + IPCOMP_ADAPT_SUBSEQ_TRIES) {
+                       KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                                   "klips_debug:skb_compress: "
+                                   "next %d packets didn't compress, "
+                                   "skipping next %d\n",
+                                   IPCOMP_ADAPT_SUBSEQ_TRIES,
+                                   IPCOMP_ADAPT_SUBSEQ_SKIP);
+                       ips->ips_comp_adapt_skip = IPCOMP_ADAPT_SUBSEQ_SKIP;
+                       ips->ips_comp_adapt_tries = IPCOMP_ADAPT_INITIAL_TRIES;
+               }
+
+               return skb;
+       }
+       
+       /* resulting compressed size */
+       cpyldsz -= zs.avail_out;
+       
+       /* Insert IPCOMP header */
+       ((struct ipcomphdr*) ((char*) iph + iphlen))->ipcomp_nh = iph->protocol;
+       ((struct ipcomphdr*) ((char*) iph + iphlen))->ipcomp_flags = 0;
+       /* use the bottom 16 bits of the spi for the cpi.  The top 16 bits are
+          for internal reference only. */
+       ((struct ipcomphdr*) (((char*)iph) + iphlen))->ipcomp_cpi = htons((__u16)(ntohl(ips->ips_said.spi) & 0x0000ffff));
+       KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                   "klips_debug:skb_compress: "
+                   "spi=%08x, spi&0xffff=%04x, cpi=%04x, payload size: raw=%d, comp=%d.\n",
+                   ntohl(ips->ips_said.spi),
+                   ntohl(ips->ips_said.spi) & 0x0000ffff,
+                   ntohs(((struct ipcomphdr*)(((char*)iph)+iphlen))->ipcomp_cpi),
+                   pyldsz,
+                   cpyldsz);
+       
+       /* Update IP header */
+       iph->protocol = IPPROTO_COMP;
+       iph->tot_len = htons(iphlen + sizeof(struct ipcomphdr) + cpyldsz);
+#if 1 /* XXX checksum is done by ipsec_tunnel ? */
+       iph->check = 0;
+       iph->check = ip_fast_csum((char *) iph, iph->ihl);
+#endif
+       
+       /* Copy compressed payload */
+       memcpy((char *) iph + iphlen + sizeof(struct ipcomphdr),
+              buffer,
+              cpyldsz);
+       kfree(buffer);
+       
+       /* Update skb length/tail by "unputting" the shrinkage */
+        safe_skb_put (skb, cpyldsz + sizeof(struct ipcomphdr) - pyldsz);
+
+#ifdef CONFIG_KLIPS_DEBUG
+       if(sysctl_ipsec_debug_ipcomp && sysctl_ipsec_debug_verbose) {
+               __u8 *c;
+               
+               c = (__u8*)iph + iphlen + sizeof(struct ipcomphdr);
+               ipsec_dmp_block("compress result", c, cpyldsz);
+       }
+#endif /* CONFIG_KLIPS_DEBUG */
+       
+       ips->ips_comp_adapt_skip = 0;
+       ips->ips_comp_adapt_tries = 0;
+       
+       return skb;
+}
+
+struct sk_buff *skb_decompress(struct sk_buff *skb, struct ipsec_sa *ips, unsigned int *flags)
+{
+       struct sk_buff *nskb = NULL;
+
+       /* original ip header */
+       struct iphdr *oiph, *iph;
+       unsigned int iphlen, pyldsz, cpyldsz;
+       z_stream zs;
+       int zresult;
+
+       KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                   "klips_debug:skb_decompress: .\n");
+
+       if(!skb) {
+               KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                           "klips_error:skb_decompress: "
+                           "passed in NULL skb, returning ERROR.\n");
+               if (flags) *flags |= IPCOMP_PARMERROR;
+               return skb;
+       }
+
+       if(!ips && sysctl_ipsec_inbound_policy_check) {
+               KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                           "klips_error:skb_decompress: "
+                           "passed in NULL ipsec_sa needed for comp alg, returning ERROR.\n");
+               if (flags) *flags |= IPCOMP_PARMERROR;
+               return skb;
+       }
+
+       if (!flags) {
+               KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                           "klips_error:skb_decompress: "
+                           "passed in NULL flags, returning ERROR.\n");
+               ipsec_kfree_skb(skb);
+               return NULL;
+       }
+       
+#ifdef NET_21
+       oiph = ip_hdr(skb);
+#else /* NET_21 */
+       oiph = skb->ip_hdr;
+#endif /* NET_21 */
+       
+       iphlen = oiph->ihl << 2;
+       
+       if (oiph->protocol != IPPROTO_COMP) {
+               KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                           "klips_error:skb_decompress: "
+                           "called with non-IPCOMP packet (protocol=%d),"
+                           "skipping decompression.\n",
+                           oiph->protocol);
+               *flags |= IPCOMP_PARMERROR;
+               return skb;
+       }
+       
+       if ( (((struct ipcomphdr*)((char*) oiph + iphlen))->ipcomp_flags != 0)
+            || ((((struct ipcomphdr*) ((char*) oiph + iphlen))->ipcomp_cpi
+               != htons(SADB_X_CALG_DEFLATE))
+                && sysctl_ipsec_inbound_policy_check
+                && (!ips || (ips && (ips->ips_encalg != SADB_X_CALG_DEFLATE)))) ) {
+               KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                           "klips_error:skb_decompress: "
+                           "called with incompatible IPCOMP packet (flags=%d, "
+                           "cpi=%d), ips-compalg=%d, skipping decompression.\n",
+                           ntohs(((struct ipcomphdr*) ((char*) oiph + iphlen))->ipcomp_flags),
+                           ntohs(((struct ipcomphdr*) ((char*) oiph + iphlen))->ipcomp_cpi),
+                           ips ? ips->ips_encalg : 0);
+               *flags |= IPCOMP_PARMERROR;
+               
+               return skb;
+       }
+       
+       if (ntohs(oiph->frag_off) & ~0x4000) {
+               KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                           "klips_error:skb_decompress: "
+                           "called with fragmented IPCOMP packet, "
+                           "skipping decompression.\n");
+               *flags |= IPCOMP_PARMERROR;
+               return skb;
+       }
+       
+       /* original compressed payload size */
+       cpyldsz = ntohs(oiph->tot_len) - iphlen - sizeof(struct ipcomphdr);
+
+       zs.zalloc = my_zcalloc;
+       zs.zfree = my_zfree;
+       zs.opaque = 0;
+       
+       zs.next_in = (char *) oiph + iphlen + sizeof(struct ipcomphdr);
+       zs.avail_in = cpyldsz;
+       
+       /* Maybe we should be a bit conservative about memory
+          requirements and use inflateInit2 */
+       /* Beware, that this might make us unable to decompress packets
+          from other implementations - HINT: check PGPnet source code */
+       /* We want to use inflateInit2 because we don't want the adler
+          header. */
+       zresult = inflateInit2(&zs, -15); 
+       if (zresult != Z_OK) {
+               KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                           "klips_error:skb_decompress: "
+                           "inflateInit2() returned error %d (%s), "
+                           "skipping decompression.\n",
+                           zresult,
+                           zs.msg ? zs.msg : zError(zresult));
+               *flags |= IPCOMP_DECOMPRESSIONERROR;
+
+               return skb;
+       }
+       
+       /* We have no way of knowing the exact length of the resulting
+          decompressed output before we have actually done the decompression.
+          For now, we guess that the packet will not be bigger than the
+          attached ipsec device's mtu or 16260, whichever is biggest.
+          This may be wrong, since the sender's mtu may be bigger yet.
+          XXX This must be dealt with later XXX
+       */
+       
+       /* max payload size */
+       pyldsz = skb->dev ? (skb->dev->mtu < 16260 ? 16260 : skb->dev->mtu)
+                         : (65520 - iphlen);
+       KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                   "klips_debug:skb_decompress: "
+                   "max payload size: %d\n", pyldsz);
+       
+       while (pyldsz > (cpyldsz + sizeof(struct ipcomphdr)) && 
+              (nskb = skb_copy_ipcomp(skb,
+                                      pyldsz - cpyldsz - sizeof(struct ipcomphdr),
+                                      GFP_ATOMIC)) == NULL) {
+               KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                           "klips_error:skb_decompress: "
+                           "unable to skb_copy_ipcomp(skb, %d, GFP_ATOMIC), "
+                           "trying with less payload size.\n",
+                           (int)(pyldsz - cpyldsz - sizeof(struct ipcomphdr)));
+               pyldsz >>=1;
+       }
+       
+       if (!nskb) {
+               KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                           "klips_error:skb_decompress: "
+                           "unable to allocate memory, dropping packet.\n");
+               *flags |= IPCOMP_DECOMPRESSIONERROR;
+               inflateEnd(&zs);
+
+               return skb;
+       }
+       
+#ifdef CONFIG_KLIPS_DEBUG
+       if(sysctl_ipsec_debug_ipcomp && sysctl_ipsec_debug_verbose) {
+               __u8 *c;
+               
+               c = (__u8*)oiph + iphlen + sizeof(struct ipcomphdr);
+               ipsec_dmp_block("decompress before", c, cpyldsz);
+       }
+#endif /* CONFIG_KLIPS_DEBUG */
+
+#ifdef NET_21
+       iph = ip_hdr(nskb);
+#else /* NET_21 */
+       iph = nskb->ip_hdr;
+#endif /* NET_21 */
+       zs.next_out = (char *)iph + iphlen;
+       zs.avail_out = pyldsz;
+
+       zresult = inflate(&zs, Z_SYNC_FLUSH);
+
+       /* work around a bug in zlib, which sometimes wants to taste an extra
+        * byte when being used in the (undocumented) raw deflate mode.
+        */
+       if (zresult == Z_OK && !zs.avail_in && zs.avail_out) {
+               __u8 zerostuff = 0;
+               
+               zs.next_in = &zerostuff;
+               zs.avail_in = 1;
+               zresult = inflate(&zs, Z_FINISH);
+       }
+
+       inflateEnd(&zs);
+       if (zresult != Z_STREAM_END) {
+               KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                           "klips_error:skb_decompress: "
+                           "inflate() returned error %d (%s), "
+                           "skipping decompression.\n",
+                           zresult,
+                           zs.msg ? zs.msg : zError(zresult));
+               *flags |= IPCOMP_DECOMPRESSIONERROR;
+               ipsec_kfree_skb(nskb);
+
+               return skb;
+       }
+       
+       /* Update IP header */
+       /* resulting decompressed size */
+       pyldsz -= zs.avail_out;
+       iph->tot_len = htons(iphlen + pyldsz);
+       iph->protocol = ((struct ipcomphdr*) ((char*) oiph + iphlen))->ipcomp_nh;
+       KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                   "klips_debug:skb_decompress: "
+                   "spi=%08x, spi&0xffff=%04x, cpi=%04x, payload size: comp=%d, raw=%d, nh=%d.\n",
+                   ips ? ntohl(ips->ips_said.spi) : 0,
+                   ips ? ntohl(ips->ips_said.spi) & 0x0000ffff : 0,
+                   ntohs(((struct ipcomphdr*)(((char*)oiph)+iphlen))->ipcomp_cpi),
+                   cpyldsz,
+                   pyldsz,
+                   iph->protocol);
+       
+#if 1 /* XXX checksum is done by ipsec_rcv ? */
+       iph->check = 0;
+       iph->check = ip_fast_csum((char*) iph, iph->ihl);
+#endif
+       
+       /* Update skb length/tail by "unputting" the unused data area */
+       safe_skb_put(nskb, -zs.avail_out);
+       
+       ipsec_kfree_skb(skb);
+       
+       if (iph->protocol == IPPROTO_COMP)
+       {
+#ifdef CONFIG_KLIPS_DEBUG
+               if(sysctl_ipsec_debug_ipcomp)
+               KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                           "klips_debug:skb_decompress: "
+                           "Eh? inner packet is also compressed, dropping.\n");
+#endif /* CONFIG_KLIPS_DEBUG */
+               
+               ipsec_kfree_skb(nskb);
+               return NULL;
+       }
+       
+#ifdef CONFIG_KLIPS_DEBUG
+       if(sysctl_ipsec_debug_ipcomp && sysctl_ipsec_debug_verbose) {
+               __u8 *c;
+               
+               c = (__u8*)iph + iphlen;
+               ipsec_dmp_block("decompress result", c, pyldsz);
+       }
+#endif /* CONFIG_KLIPS_DEBUG */
+       
+       return nskb;
+}
+
+
+/* this is derived from skb_copy() in linux 2.2.14 */
+/* May be incompatible with other kernel versions!! */
+static
+struct sk_buff *skb_copy_ipcomp(struct sk_buff *skb, int data_growth, int gfp_mask)
+{
+        struct sk_buff *n;
+       struct iphdr *iph;
+        unsigned long offset;
+        unsigned int iphlen;
+       
+       if(!skb) {
+               KLIPS_PRINT(sysctl_ipsec_debug_ipcomp,
+                           "klips_debug:skb_copy_ipcomp: "
+                           "passed in NULL skb, returning NULL.\n");
+               return NULL;
+       }
+
+        /*
+         *      Allocate the copy buffer
+         */
+       
+#ifdef NET_21
+       iph = ip_hdr(skb);
+#else /* NET_21 */
+       iph = skb->ip_hdr;
+#endif /* NET_21 */
+        if (!iph) return NULL;
+        iphlen = iph->ihl << 2;
+
+        n=alloc_skb(skb_end_pointer(skb) - skb->head + data_growth, gfp_mask);
+        if(n==NULL)
+                return NULL;
+       
+        /*
+         *      Shift between the two data areas in bytes
+         */
+       
+        offset=n->head-skb->head;
+
+        /* Set the data pointer */
+        skb_reserve(n,skb->data-skb->head);
+        /* Set the tail pointer and length */
+        safe_skb_put(n,skb->len+data_growth);
+        /* Copy the bytes up to and including the ip header */
+        memcpy(n->head,
+              skb->head,
+              ((char *)iph - (char *)skb->head) + iphlen);
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,14)
+        n->list=NULL;
+#endif
+       n->next=NULL;
+       n->prev=NULL;
+        n->sk=NULL;
+        n->dev=skb->dev;
+       if (skb_transport_header(skb))
+               skb_set_transport_header(n, offset);
+        n->protocol=skb->protocol;
+#ifdef NET_21
+        n->csum = 0;
+        n->priority=skb->priority;
+        n->dst=dst_clone(skb->dst);
+        skb_set_network_header(n, offset);
+#ifndef NETDEV_23
+        n->is_clone=0;
+#endif /* NETDEV_23 */
+        atomic_set(&n->users, 1);
+        n->destructor = NULL;
+#ifdef HAVE_SOCK_SECURITY
+        n->security=skb->security;
+#endif
+        memcpy(n->cb, skb->cb, sizeof(skb->cb));
+#ifdef CONFIG_IP_FIREWALL
+        n->fwmark = skb->fwmark;
+#endif
+#else /* NET_21 */
+       n->link3=NULL;
+       n->when=skb->when;
+       n->ip_hdr=(struct iphdr *)(((char *)skb->ip_hdr)+offset);
+       n->saddr=skb->saddr;
+       n->daddr=skb->daddr;
+       n->raddr=skb->raddr;
+       n->seq=skb->seq;
+       n->end_seq=skb->end_seq;
+       n->ack_seq=skb->ack_seq;
+       n->acked=skb->acked;
+       n->free=1;
+       n->arp=skb->arp;
+       n->tries=0;
+       n->lock=0;
+       n->users=0;
+       memcpy(n->proto_priv, skb->proto_priv, sizeof(skb->proto_priv));
+#endif /* NET_21 */
+       if (skb_mac_header(skb))
+               skb_set_mac_header(n, offset);
+#ifndef NETDEV_23
+       n->used=skb->used;
+#endif /* !NETDEV_23 */
+        n->pkt_type=skb->pkt_type;
+#ifndef NETDEV_23
+       n->pkt_bridged=skb->pkt_bridged;
+#endif /* NETDEV_23 */
+       n->ip_summed=0;
+#ifdef HAVE_TSTAMP
+        n->tstamp = skb->tstamp;
+#else
+        n->stamp=skb->stamp;
+#endif
+#ifndef NETDEV_23 /* this seems to have been removed in 2.4 */
+#if defined(CONFIG_SHAPER) || defined(CONFIG_SHAPER_MODULE)
+        n->shapelatency=skb->shapelatency;       /* Latency on frame */
+        n->shapeclock=skb->shapeclock;           /* Time it should go out */
+        n->shapelen=skb->shapelen;               /* Frame length in clocks */
+        n->shapestamp=skb->shapestamp;           /* Stamp for shaper    */
+        n->shapepend=skb->shapepend;             /* Pending */
+#endif /* defined(CONFIG_SHAPER) || defined(CONFIG_SHAPER_MODULE) */
+#endif /* NETDEV_23 */
+
+        return n;
+}
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/ipsec_ah.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,411 @@
+/*
+ * processing code for AH
+ * Copyright (C) 2003-2004   Michael Richardson <mcr@xelerance.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+char ipsec_ah_c_version[] = "RCSID $Id: ipsec_ah.c,v 1.12.2.3 2007-09-05 02:56:09 paul Exp $";
+#ifndef AUTOCONF_INCLUDED
+#include <linux/config.h>
+#endif
+#include <linux/version.h>
+
+#define __NO_VERSION__
+#include <linux/module.h>
+#include <linux/kernel.h> /* printk() */
+
+#include "openswan/ipsec_param.h"
+
+#ifdef MALLOC_SLAB
+# include <linux/slab.h> /* kmalloc() */
+#else /* MALLOC_SLAB */
+# include <linux/malloc.h> /* kmalloc() */
+#endif /* MALLOC_SLAB */
+#include <linux/errno.h>  /* error codes */
+#include <linux/types.h>  /* size_t */
+#include <linux/interrupt.h> /* mark_bh */
+
+#include <linux/netdevice.h>   /* struct device, and other headers */
+#include <linux/etherdevice.h> /* eth_type_trans */
+#include <linux/ip.h>          /* struct iphdr */
+#include <linux/skbuff.h>
+#include <openswan.h>
+#ifdef SPINLOCK
+# ifdef SPINLOCK_23
+#  include <linux/spinlock.h> /* *lock* */
+# else /* SPINLOCK_23 */
+#  include <asm/spinlock.h> /* *lock* */
+# endif /* SPINLOCK_23 */
+#endif /* SPINLOCK */
+
+#include <net/ip.h>
+#include <net/protocol.h>
+
+#include "openswan/radij.h"
+#include "openswan/ipsec_encap.h"
+#include "openswan/ipsec_sa.h"
+
+#include "openswan/ipsec_radij.h"
+#include "openswan/ipsec_xform.h"
+#include "openswan/ipsec_tunnel.h" 
+#include "openswan/ipsec_rcv.h"
+#include "openswan/ipsec_xmit.h"
+
+#include "openswan/ipsec_auth.h"
+#include "openswan/ipsec_ah.h"
+#include "openswan/ipsec_proto.h"
+
+__u32 zeroes[AH_AMAX];
+
+enum ipsec_rcv_value
+ipsec_rcv_ah_checks(struct ipsec_rcv_state *irs,
+                   struct sk_buff *skb)
+{
+       int ahminlen;
+
+       ahminlen = irs->hard_header_len + sizeof(struct iphdr);
+
+       /* take care not to deref this pointer until we check the minlen though */
+       irs->protostuff.ahstuff.ahp = (struct ahhdr *)skb_transport_header(skb);
+
+       if((skb->len < ahminlen+sizeof(struct ahhdr)) ||
+          (skb->len < ahminlen+(irs->protostuff.ahstuff.ahp->ah_hl << 2))) {
+               KLIPS_PRINT(debug_rcv & DB_RX_INAU,
+                           "klips_debug:ipsec_rcv: "
+                           "runt ah packet of skb->len=%d received from %s, dropped.\n",
+                           skb->len,
+                           irs->ipsaddr_txt);
+               if(irs->stats) {
+                       irs->stats->rx_errors++;
+               }
+               return IPSEC_RCV_BADLEN;
+       }
+
+       irs->said.spi = irs->protostuff.ahstuff.ahp->ah_spi;
+
+       /* XXX we only support the one 12-byte authenticator for now */
+       if(irs->protostuff.ahstuff.ahp->ah_hl != ((AHHMAC_HASHLEN+AHHMAC_RPLLEN) >> 2)) {
+               KLIPS_PRINT(debug_rcv & DB_RX_INAU,
+                           "klips_debug:ipsec_rcv: "
+                           "bad authenticator length %ld, expected %lu from %s.\n",
+                           (long)(irs->protostuff.ahstuff.ahp->ah_hl << 2),
+                           (unsigned long) sizeof(struct ahhdr),
+                           irs->ipsaddr_txt);
+               if(irs->stats) {
+                       irs->stats->rx_errors++;
+               }
+               return IPSEC_RCV_BADLEN;
+       }
+
+       return IPSEC_RCV_OK;
+}
+
+
+enum ipsec_rcv_value
+ipsec_rcv_ah_setup_auth(struct ipsec_rcv_state *irs,
+                       struct sk_buff *skb,
+                       __u32          *replay,
+                       unsigned char **authenticator)
+{
+       struct ahhdr *ahp = irs->protostuff.ahstuff.ahp;
+
+       *replay = ntohl(ahp->ah_rpl);
+       *authenticator = ahp->ah_data;
+
+       return IPSEC_RCV_OK;
+}
+
+enum ipsec_rcv_value
+ipsec_rcv_ah_authcalc(struct ipsec_rcv_state *irs,
+                     struct sk_buff *skb)
+{
+       struct auth_alg *aa;
+       struct ahhdr *ahp = irs->protostuff.ahstuff.ahp;
+       union {
+               MD5_CTX         md5;
+               SHA1_CTX        sha1;
+       } tctx;
+       struct iphdr ipo;
+       int ahhlen;
+
+       aa = irs->authfuncs;
+
+       /* copy the initialized keying material */
+       memcpy(&tctx, irs->ictx, irs->ictx_len);
+
+       ipo = *irs->ipp;
+       ipo.tos = 0;    /* mutable RFC 2402 3.3.3.1.1.1 */
+       ipo.frag_off = 0;
+       ipo.ttl = 0;
+       ipo.check = 0;
+
+
+       /* do the sanitized header */
+       (*aa->update)((void*)&tctx, (caddr_t)&ipo, sizeof(struct iphdr));
+
+       /* XXX we didn't do the options here! */
+
+       /* now do the AH header itself */
+       ahhlen = AH_BASIC_LEN + (ahp->ah_hl << 2);
+       (*aa->update)((void*)&tctx, (caddr_t)ahp,  ahhlen - AHHMAC_HASHLEN);
+
+       /* now, do some zeroes */
+       (*aa->update)((void*)&tctx, (caddr_t)zeroes,  AHHMAC_HASHLEN);
+
+       /* finally, do the packet contents themselves */
+       (*aa->update)((void*)&tctx,
+                     (caddr_t)skb_transport_header(skb) + ahhlen,
+                     skb->len - ahhlen);
+
+       (*aa->final)(irs->hash, (void *)&tctx);
+
+       memcpy(&tctx, irs->octx, irs->octx_len);
+
+       (*aa->update)((void *)&tctx, irs->hash, aa->hashlen);
+       (*aa->final)(irs->hash, (void *)&tctx);
+
+       return IPSEC_RCV_OK;
+}
+
+enum ipsec_rcv_value
+ipsec_rcv_ah_decap(struct ipsec_rcv_state *irs)
+{
+       struct ahhdr *ahp = irs->protostuff.ahstuff.ahp;
+       struct sk_buff *skb;
+       int ahhlen;
+
+       skb=irs->skb;
+
+       ahhlen = AH_BASIC_LEN + (ahp->ah_hl << 2);
+
+       irs->ipp->tot_len = htons(ntohs(irs->ipp->tot_len) - ahhlen);
+       irs->next_header  = ahp->ah_nh;
+
+       /*
+        * move the IP header forward by the size of the AH header, which
+        * will remove the the AH header from the packet.
+        */
+       memmove((void *)(skb_network_header(skb) + ahhlen),
+               (void *)(skb_network_header(skb)), irs->iphlen);
+
+       ipsec_rcv_dmp("ah postmove", skb->data, skb->len);
+
+       /* skb_pull below, will move up by ahhlen */
+
+       /* XXX not clear how this can happen, as the message indicates */
+       if(skb->len < ahhlen) {
+               printk(KERN_WARNING
+                      "klips_error:ipsec_rcv: "
+                      "tried to skb_pull ahhlen=%d, %d available.  This should never happen, please report.\n",
+                      ahhlen,
+                      (int)(skb->len));
+               return IPSEC_RCV_DECAPFAIL;
+       }
+       skb_pull(skb, ahhlen);
+
+       skb_set_network_header(skb, ahhlen);
+       irs->ipp = ip_hdr(skb);
+
+       ipsec_rcv_dmp("ah postpull", (void *)ip_hdr(skb), skb->len);
+
+       return IPSEC_RCV_OK;
+}
+
+enum ipsec_xmit_value
+ipsec_xmit_ah_setup(struct ipsec_xmit_state *ixs)
+{
+  struct iphdr ipo;
+  struct ahhdr *ahp;
+  __u8 hash[AH_AMAX];
+  union {
+#ifdef CONFIG_KLIPS_AUTH_HMAC_MD5
+    MD5_CTX md5;
+#endif /* CONFIG_KLIPS_AUTH_HMAC_MD5 */
+#ifdef CONFIG_KLIPS_AUTH_HMAC_SHA1
+    SHA1_CTX sha1;
+#endif /* CONFIG_KLIPS_AUTH_HMAC_SHA1 */
+  } tctx;
+  unsigned char *dat = (unsigned char *)ixs->iph;
+
+  ahp = (struct ahhdr *)(dat + ixs->iphlen);
+  ahp->ah_spi = ixs->ipsp->ips_said.spi;
+  ahp->ah_rpl = htonl(++(ixs->ipsp->ips_replaywin_lastseq));
+  ahp->ah_rv = 0;
+  ahp->ah_nh = ixs->iph->protocol;
+  ahp->ah_hl = (sizeof(struct ahhdr) >> 2) - sizeof(__u64)/sizeof(__u32);
+  ixs->iph->protocol = IPPROTO_AH;
+  ipsec_xmit_dmp("ahp", (char*)ahp, sizeof(*ahp));
+  
+  ipo = *ixs->iph;
+  ipo.tos = 0;
+  ipo.frag_off = 0;
+  ipo.ttl = 0;
+  ipo.check = 0;
+  ipsec_xmit_dmp("ipo", (char*)&ipo, sizeof(ipo));
+  
+  switch(ixs->ipsp->ips_authalg) {
+#ifdef CONFIG_KLIPS_AUTH_HMAC_MD5
+  case AH_MD5:
+    tctx.md5 = ((struct md5_ctx*)(ixs->ipsp->ips_key_a))->ictx;
+    ipsec_xmit_dmp("ictx", (char*)&tctx.md5, sizeof(tctx.md5));
+    osMD5Update(&tctx.md5, (unsigned char *)&ipo, sizeof (struct iphdr));
+    ipsec_xmit_dmp("ictx+ipo", (char*)&tctx.md5, sizeof(tctx.md5));
+    osMD5Update(&tctx.md5, (unsigned char *)ahp,
+             sizeof(struct ahhdr) - sizeof(ahp->ah_data));
+    ipsec_xmit_dmp("ictx+ahp", (char*)&tctx.md5, sizeof(tctx.md5));
+    osMD5Update(&tctx.md5, (unsigned char *)zeroes, AHHMAC_HASHLEN);
+    ipsec_xmit_dmp("ictx+zeroes", (char*)&tctx.md5, sizeof(tctx.md5));
+    osMD5Update(&tctx.md5,  dat + ixs->iphlen + sizeof(struct ahhdr),
+             ixs->skb->len - ixs->iphlen - sizeof(struct ahhdr));
+    ipsec_xmit_dmp("ictx+dat", (char*)&tctx.md5, sizeof(tctx.md5));
+    osMD5Final(hash, &tctx.md5);
+    ipsec_xmit_dmp("ictx hash", (char*)&hash, sizeof(hash));
+    tctx.md5 = ((struct md5_ctx*)(ixs->ipsp->ips_key_a))->octx;
+    ipsec_xmit_dmp("octx", (char*)&tctx.md5, sizeof(tctx.md5));
+    osMD5Update(&tctx.md5, hash, AHMD596_ALEN);
+    ipsec_xmit_dmp("octx+hash", (char*)&tctx.md5, sizeof(tctx.md5));
+    osMD5Final(hash, &tctx.md5);
+    ipsec_xmit_dmp("octx hash", (char*)&hash, sizeof(hash));
+    
+    memcpy(ahp->ah_data, hash, AHHMAC_HASHLEN);
+    
+    /* paranoid */
+    memset((caddr_t)&tctx.md5, 0, sizeof(tctx.md5));
+    memset((caddr_t)hash, 0, sizeof(*hash));
+    break;
+#endif /* CONFIG_KLIPS_AUTH_HMAC_MD5 */
+#ifdef CONFIG_KLIPS_AUTH_HMAC_SHA1
+  case AH_SHA:
+    tctx.sha1 = ((struct sha1_ctx*)(ixs->ipsp->ips_key_a))->ictx;
+    SHA1Update(&tctx.sha1, (unsigned char *)&ipo, sizeof (struct iphdr));
+    SHA1Update(&tctx.sha1, (unsigned char *)ahp, sizeof(struct ahhdr) - sizeof(ahp->ah_data));
+    SHA1Update(&tctx.sha1, (unsigned char *)zeroes, AHHMAC_HASHLEN);
+    SHA1Update(&tctx.sha1, dat + ixs->iphlen + sizeof(struct ahhdr),
+              ixs->skb->len - ixs->iphlen - sizeof(struct ahhdr));
+    SHA1Final(hash, &tctx.sha1);
+    tctx.sha1 = ((struct sha1_ctx*)(ixs->ipsp->ips_key_a))->octx;
+    SHA1Update(&tctx.sha1, hash, AHSHA196_ALEN);
+    SHA1Final(hash, &tctx.sha1);
+    
+    memcpy(ahp->ah_data, hash, AHHMAC_HASHLEN);
+    
+    /* paranoid */
+    memset((caddr_t)&tctx.sha1, 0, sizeof(tctx.sha1));
+    memset((caddr_t)hash, 0, sizeof(*hash));
+    break;
+#endif /* CONFIG_KLIPS_AUTH_HMAC_SHA1 */
+  default:
+    ixs->stats->tx_errors++;
+    return IPSEC_XMIT_AH_BADALG;
+  }
+#ifdef NET_21
+  skb_set_transport_header(ixs->skb, ipsec_skb_offset(ixs->skb, ahp));
+#endif /* NET_21 */
+
+  return IPSEC_XMIT_OK;
+}
+
+struct xform_functions ah_xform_funcs[]={
+       {       rcv_checks:         ipsec_rcv_ah_checks,
+               rcv_setup_auth:     ipsec_rcv_ah_setup_auth,
+               rcv_calc_auth:      ipsec_rcv_ah_authcalc,
+               rcv_decrypt:        ipsec_rcv_ah_decap,
+
+               xmit_setup:         ipsec_xmit_ah_setup,
+               xmit_headroom:      sizeof(struct ahhdr),
+               xmit_needtailroom:  0,
+       },
+};
+
+
+#ifdef NET_26
+struct inet_protocol ah_protocol = {
+  .handler = ipsec_rcv,
+  .no_policy = 1,
+};
+#else
+struct inet_protocol ah_protocol =
+{
+       ipsec_rcv,                              /* AH handler */
+       NULL,                           /* TUNNEL error control */
+#ifdef NETDEV_25
+       1,                              /* no policy */
+#else
+       0,                              /* next */
+       IPPROTO_AH,                     /* protocol ID */
+       0,                              /* copy */
+       NULL,                           /* data */
+       "AH"                            /* name */
+#endif
+};
+#endif /* NET_26 */
+
+/*
+ * $Log: ipsec_ah.c,v $
+ * Revision 1.12.2.3  2007-09-05 02:56:09  paul
+ * Use the new ipsec_kversion macros by David to deal with 2.6.22 kernels.
+ * Fixes based on David McCullough patch.
+ *
+ * Revision 1.12.2.2  2006/10/06 21:39:26  paul
+ * Fix for 2.6.18+ only include linux/config.h if AUTOCONF_INCLUDED is not
+ * set. This is defined through autoconf.h which is included through the
+ * linux kernel build macros.
+ *
+ * Revision 1.12.2.1  2006/02/15 05:35:14  paul
+ * Patch by  David McCullough <davidm@snapgear.com>
+ * If you setup a tunnel without ESP it doesn't work.  It used to work in
+ * an older openswan version but stopped when klips was modified to deal
+ * with the pulled IP header on the received SKB's.
+ *
+ * The code in ipsec_ah.c still thinks the IP header is there and runs the
+ * hash on the incorrect data.
+ *
+ * Revision 1.12  2005/04/29 05:10:22  mcr
+ *     removed from extraenous includes to make unit testing easier.
+ *
+ * Revision 1.11  2005/04/15 19:50:55  mcr
+ *     adjustments to use proper skb fields for data.
+ *
+ * Revision 1.10  2004/09/14 00:22:57  mcr
+ *     adjustment of MD5* functions.
+ *
+ * Revision 1.9  2004/09/13 02:22:47  mcr
+ *     #define inet_protocol if necessary.
+ *
+ * Revision 1.8  2004/09/06 18:35:48  mcr
+ *     2.6.8.1 gets rid of inet_protocol->net_protocol compatibility,
+ *     so adjust for that.
+ *
+ * Revision 1.7  2004/08/22 05:00:48  mcr
+ *     if we choose to compile the file, we want the contents,
+ *     so don't pull any punches.
+ *
+ * Revision 1.6  2004/08/17 03:27:23  mcr
+ *     klips 2.6 edits.
+ *
+ * Revision 1.5  2004/08/14 03:28:24  mcr
+ *     fixed log comment to remove warning about embedded comment.
+ *
+ * Revision 1.4  2004/08/04 15:57:07  mcr
+ *     moved des .h files to include/des/ *
+ *     included 2.6 protocol specific things
+ *     started at NAT-T support, but it will require a kernel patch.
+ *
+ * Revision 1.3  2004/07/10 19:11:18  mcr
+ *     CONFIG_IPSEC -> CONFIG_KLIPS.
+ *
+ * Revision 1.2  2004/04/06 02:49:25  mcr
+ *     pullup of algo code from alg-branch.
+ *
+ *
+ *
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/ipsec_alg.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,1057 @@
+/*
+ * Modular extensions service and registration functions
+ *
+ * Author: JuanJo Ciarlante <jjo-ipsec@mendoza.gov.ar>
+ * 
+ * Version: 0.8.1
+ *
+ * ipsec_alg.c,v 1.1.2.1 2003/11/21 18:12:23 jjo Exp
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ */
+#define __NO_VERSION__
+
+#if defined (MODULE)
+#include <linux/module.h>
+#endif
+
+#include <linux/kernel.h> /* printk() */
+
+#include <linux/netdevice.h>   /* struct device, and other headers */
+#include <linux/etherdevice.h> /* eth_type_trans */
+#include <linux/ip.h>          /* struct iphdr */
+#include <linux/skbuff.h>
+#include <linux/socket.h>
+#include <linux/in.h>
+#include <linux/types.h>
+#include <linux/string.h>      /* memcmp() */
+#include <linux/random.h>      /* get_random_bytes() */
+#include <linux/errno.h>  /* error codes */
+#ifdef SPINLOCK
+# ifdef SPINLOCK_23
+#  include <linux/spinlock.h> /* *lock* */
+# else /* SPINLOCK_23 */
+#  include <asm/spinlock.h> /* *lock* */
+# endif /* SPINLOCK_23 */
+#endif /* SPINLOCK */
+
+#include "openswan/ipsec_param.h"
+#include <openswan.h>
+#include "openswan/ipsec_sa.h"
+#include "openswan/radij.h"
+#include "openswan/ipsec_encap.h"
+#include "openswan/ipsec_radij.h"
+#include "openswan/ipsec_xform.h"
+#include "openswan/ipsec_tunnel.h"
+#include "openswan/ipsec_rcv.h"
+#if defined(CONFIG_KLIPS_ESP) || defined(CONFIG_KLIPS_AH)
+# include "openswan/ipsec_ah.h"
+#endif /* defined(CONFIG_KLIPS_ESP) || defined(CONFIG_KLIPS_AH) */
+#ifdef CONFIG_KLIPS_ESP
+# include "openswan/ipsec_esp.h"
+#endif /* !CONFIG_KLIPS_ESP */
+#ifdef CONFIG_KLIPS_IPCOMP
+# include "openswan/ipcomp.h"
+#endif /* CONFIG_KLIPS_COMP */
+
+#include <pfkeyv2.h>
+#include <pfkey.h>
+
+#include "openswan/ipsec_alg.h"
+#include "openswan/ipsec_proto.h"
+
+#if SADB_EALG_MAX < 255
+#warning Compiling with limited ESP support ( SADB_EALG_MAX < 256 )
+#endif
+
+static rwlock_t ipsec_alg_lock = RW_LOCK_UNLOCKED;
+#define IPSEC_ALG_HASHSZ       16      /* must be power of 2, even 2^0=1 */
+static struct list_head ipsec_alg_hash_table[IPSEC_ALG_HASHSZ];
+
+/*     Old gcc's will fail here        */
+#define barf_out(fmt, args...)  do { struct ipsec_alg *ixtc = (struct ipsec_alg *)ixt; printk(KERN_ERR "%s: (%s) " fmt, __FUNCTION__, ixtc->ixt_name , ## args) \
+       ; goto out; } while(0)
+
+#ifdef NET_26
+/* 
+ *     Must be already protected by lock 
+ */
+static void __ipsec_alg_usage_inc(struct ipsec_alg *ixt)
+{
+#ifdef MODULE
+       if (ixt->ixt_module)
+               try_module_get(ixt->ixt_module);
+#endif
+       atomic_inc(&ixt->ixt_refcnt);
+}
+static void __ipsec_alg_usage_dec(struct ipsec_alg *ixt) {
+       atomic_dec(&ixt->ixt_refcnt);
+#ifdef MODULE
+       if (ixt->ixt_module)
+               module_put(ixt->ixt_module);
+#endif
+}
+
+#else
+
+/* 
+ *     Must be already protected by lock 
+ */
+static void __ipsec_alg_usage_inc(struct ipsec_alg *ixt) {
+#ifdef MODULE
+       if (ixt->ixt_module) {
+               __MOD_INC_USE_COUNT(ixt->ixt_module);
+       }
+#endif
+       atomic_inc(&ixt->ixt_refcnt);
+}
+static void __ipsec_alg_usage_dec(struct ipsec_alg *ixt) {
+       atomic_dec(&ixt->ixt_refcnt);
+#ifdef MODULE
+       if (ixt->ixt_module)
+               __MOD_DEC_USE_COUNT(ixt->ixt_module);
+#endif
+}
+#endif
+
+/*
+ *     simple hash function, optimized for 0-hash (1 list) special
+ *     case
+ */
+#if IPSEC_ALG_HASHSZ > 1
+static inline unsigned ipsec_alg_hashfn(int alg_type, int alg_id) {
+       return ((alg_type^alg_id)&(IPSEC_ALG_HASHSZ-1));
+}
+#else
+#define ipsec_alg_hashfn(x,y) (0)
+#endif
+
+/*****************************************************************
+ *
+ *     INTERNAL table handling: insert, delete, find
+ *
+ *****************************************************************/
+
+/*     
+ *     hash table initialization, called from ipsec_alg_init()
+ */
+static void ipsec_alg_hash_init(void) {
+       struct list_head *head = ipsec_alg_hash_table;
+       int i = IPSEC_ALG_HASHSZ;
+       do {
+               INIT_LIST_HEAD(head);
+               head++;
+               i--;
+       } while (i);
+}
+/*
+ *     hash list lookup by {alg_type, alg_id} and table head,
+ *     must be already protected by lock
+ */
+static struct ipsec_alg *__ipsec_alg_find(unsigned alg_type, unsigned alg_id, struct list_head * head) {
+       struct list_head *p;
+       struct ipsec_alg *ixt=NULL;
+       for (p=head->next; p!=head; p=p->next) {
+               ixt = list_entry(p, struct ipsec_alg, ixt_list);
+               if (ixt->ixt_alg_type == alg_type && ixt->ixt_alg_id==alg_id) {
+                       goto out;
+               }
+       }
+       ixt=NULL;
+out:
+       return ixt;
+}
+/*
+ *     inserts (in front) a new entry in hash table, 
+ *     called from ipsec_alg_register() when new algorithm is registered.
+ */
+static int ipsec_alg_insert(struct ipsec_alg *ixt) {
+       int ret=-EINVAL;
+       unsigned hashval=ipsec_alg_hashfn(ixt->ixt_alg_type, ixt->ixt_alg_id);
+       struct list_head *head= ipsec_alg_hash_table + hashval;
+       struct ipsec_alg *ixt_cur;
+
+       /*      new element must be virgin ... */
+       if (ixt->ixt_list.next != &ixt->ixt_list || 
+               ixt->ixt_list.prev != &ixt->ixt_list) {
+               printk(KERN_ERR "ipsec_alg_insert: ixt object \"%s\" "
+                               "list head not initialized\n",
+                               ixt->ixt_name);
+               return ret;
+       }
+       write_lock_bh(&ipsec_alg_lock);
+
+       ixt_cur = __ipsec_alg_find(ixt->ixt_alg_type, ixt->ixt_alg_id, head);
+
+       /* if previous (current) ipsec_alg found check excl flag of _anyone_ */
+       if (ixt_cur
+           && ((ixt->ixt_state|ixt_cur->ixt_state) & IPSEC_ALG_ST_EXCL)) {
+         barf_out("ipsec_alg for alg_type=%d, alg_id=%d already exist. "
+                  "Not loaded (ret=%d).\n",
+                  ixt->ixt_alg_type,
+                  ixt->ixt_alg_id, ret=-EEXIST);
+       }
+       list_add(&ixt->ixt_list, head);
+       ixt->ixt_state |= IPSEC_ALG_ST_REGISTERED;
+       ret=0;
+out:
+       write_unlock_bh(&ipsec_alg_lock);
+       return ret;
+}
+
+/*
+ *     deletes an existing entry in hash table, 
+ *     called from ipsec_alg_unregister() when algorithm is unregistered.
+ */
+static int ipsec_alg_delete(struct ipsec_alg *ixt) {
+       write_lock_bh(&ipsec_alg_lock);
+       list_del(&ixt->ixt_list);
+       write_unlock_bh(&ipsec_alg_lock);
+       return 0;
+}
+
+/*
+ *     here @user context (read-only when @kernel bh context) 
+ *     -> no bh disabling
+ *
+ *     called from ipsec_sa_init() -> ipsec_alg_sa_init()
+ */
+static struct ipsec_alg *ipsec_alg_get(int alg_type, int alg_id)
+{
+       unsigned hashval=ipsec_alg_hashfn(alg_type, alg_id);
+       struct list_head *head= ipsec_alg_hash_table + hashval;
+       struct ipsec_alg *ixt;
+
+       read_lock(&ipsec_alg_lock);
+       ixt=__ipsec_alg_find(alg_type, alg_id, head);
+       if (ixt) __ipsec_alg_usage_inc(ixt);
+       read_unlock(&ipsec_alg_lock);
+
+       return ixt;
+}
+
+static void ipsec_alg_put(struct ipsec_alg *ixt) {
+       __ipsec_alg_usage_dec((struct ipsec_alg *)ixt);
+}
+
+/*****************************************************************
+ *
+ *     INTERFACE for ENC services: key creation, encrypt function
+ *
+ *****************************************************************/
+
+/*
+ *     main encrypt service entry point
+ *     called from ipsec_rcv() with encrypt=IPSEC_ALG_DECRYPT and
+ *     ipsec_tunnel_start_xmit with encrypt=IPSEC_ALG_ENCRYPT
+ */
+int ipsec_alg_esp_encrypt(struct ipsec_sa *sa_p, __u8 * idat,
+                         int ilen, const __u8 * iv, int encrypt)
+{
+       int ret;
+       struct ipsec_alg_enc *ixt_e=sa_p->ips_alg_enc;
+#ifdef CONFIG_KLIPS_DEBUG
+       int debug_flag = (encrypt==IPSEC_ALG_ENCRYPT ?
+                         debug_tunnel : debug_rcv);
+#endif
+
+       KLIPS_PRINT(debug_flag,
+                   "klips_debug:ipsec_alg_esp_encrypt: "
+                   "entering with encalg=%d, ixt_e=%p\n",
+                   sa_p->ips_encalg, ixt_e);
+       if (ixt_e == NULL) {
+#ifdef CONFIG_KLIPS_DEBUG
+         KLIPS_ERROR(debug_flag,
+                     "klips_debug:ipsec_alg_esp_encrypt: "
+                     "NULL ipsec_alg_enc object\n");
+#endif
+               return -1;
+       }
+       KLIPS_PRINT(debug_flag,
+                   "klips_debug:ipsec_alg_esp_encrypt: "
+                   "calling cbc_encrypt encalg=%d "
+                   "ips_key_e=%p idat=%p ilen=%d iv=%p, encrypt=%d\n",
+                       sa_p->ips_encalg, 
+                       sa_p->ips_key_e, idat, ilen, iv, encrypt);
+       ret=ixt_e->ixt_e_cbc_encrypt(ixt_e, sa_p->ips_key_e, idat,
+                                    ilen, iv, encrypt);
+       KLIPS_PRINT(debug_flag,
+                   "klips_debug:ipsec_alg_esp_encrypt: "
+                   "returned ret=%d\n",
+                   ret);
+       return ret;
+}
+
+/*
+ *     encryption key context creation function
+ *     called from pfkey_v2_parser.c:pfkey_ips_init() 
+ */
+int ipsec_alg_enc_key_create(struct ipsec_sa *sa_p) {
+       int ret=-EINVAL;
+       int keyminbits, keymaxbits;
+       caddr_t ekp;
+       struct ipsec_alg_enc *ixt_e=sa_p->ips_alg_enc;
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:ipsec_alg_enc_key_create: "
+                   "entering with encalg=%d ixt_e=%p\n",
+                   sa_p->ips_encalg, ixt_e);
+       if (!ixt_e) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:ipsec_alg_enc_key_create: "
+                           "NULL ipsec_alg_enc object\n");
+               return -EPROTO;
+       }
+
+       /* 
+        * grRRR... DES 7bits jurassic stuff ... f*ckk --jjo 
+        */
+       switch(ixt_e->ixt_common.ixt_support.ias_id) {
+               case ESP_3DES:
+                       keyminbits=keymaxbits=192;break;
+               case ESP_DES:
+                       keyminbits=keymaxbits=64;break;
+               default:
+                       keyminbits=ixt_e->ixt_common.ixt_support.ias_keyminbits;
+                       keymaxbits=ixt_e->ixt_common.ixt_support.ias_keymaxbits;
+       }
+       if(sa_p->ips_key_bits_e<keyminbits || 
+                       sa_p->ips_key_bits_e>keymaxbits) {
+               KLIPS_PRINT(debug_pfkey,
+                               "klips_debug:ipsec_alg_enc_key_create: "
+                               "incorrect encryption key size for id=%d: %d bits -- "
+                               "must be between %d,%d bits\n" /*octets (bytes)\n"*/,
+                               ixt_e->ixt_common.ixt_support.ias_id,
+                               sa_p->ips_key_bits_e, keyminbits, keymaxbits);
+               ret=-EINVAL;
+               goto ixt_out;
+       }
+       /* save encryption key pointer */
+       ekp = sa_p->ips_key_e;
+
+
+       if (ixt_e->ixt_e_new_key) {
+               sa_p->ips_key_e = ixt_e->ixt_e_new_key(ixt_e,
+                               ekp, sa_p->ips_key_bits_e/8);
+               ret =  (sa_p->ips_key_e)? 0 : -EINVAL;
+       } else {
+               if((sa_p->ips_key_e = (caddr_t)
+                   kmalloc((sa_p->ips_key_e_size = ixt_e->ixt_e_ctx_size),
+                           GFP_ATOMIC)) == NULL) {
+                       ret=-ENOMEM;
+                       goto ixt_out;
+               }
+               /* zero-out key_e */
+               memset(sa_p->ips_key_e, 0, sa_p->ips_key_e_size);
+
+               /* I cast here to allow more decoupling in alg module */
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:ipsec_alg_enc_key_create: about to call:"
+                                   "set_key(key_e=%p, ekp=%p, key_size=%d)\n",
+                                   (caddr_t)sa_p->ips_key_e, ekp, sa_p->ips_key_bits_e/8);
+               ret = ixt_e->ixt_e_set_key(ixt_e, (caddr_t)sa_p->ips_key_e, ekp, sa_p->ips_key_bits_e/8);
+       }
+       /* paranoid */
+       memset(ekp, 0, sa_p->ips_key_bits_e/8);
+       kfree(ekp);
+ixt_out:
+       return ret;
+}
+
+/***************************************************************
+ *
+ *     INTERFACE for AUTH services: key creation, hash functions
+ *
+ ***************************************************************/
+
+/*
+ *     auth key context creation function
+ *     called from pfkey_v2_parser.c:pfkey_ips_init() 
+ */
+int ipsec_alg_auth_key_create(struct ipsec_sa *sa_p) {
+       int ret=-EINVAL;
+       struct ipsec_alg_auth *ixt_a=sa_p->ips_alg_auth;
+       int keyminbits, keymaxbits;
+       unsigned char *akp;
+       unsigned int aks;
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:ipsec_alg_auth_key_create: "
+                   "entering with authalg=%d ixt_a=%p\n",
+                   sa_p->ips_authalg, ixt_a);
+       if (!ixt_a) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:ipsec_alg_auth_key_create: "
+                           "NULL ipsec_alg_auth object\n");
+               return -EPROTO;
+       }
+       keyminbits=ixt_a->ixt_common.ixt_support.ias_keyminbits;
+       keymaxbits=ixt_a->ixt_common.ixt_support.ias_keymaxbits;
+       if(sa_p->ips_key_bits_a<keyminbits || sa_p->ips_key_bits_a>keymaxbits) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:ipsec_alg_auth_key_create: incorrect auth"
+                           "key size: %d bits -- must be between %d,%d bits\n"/*octets (bytes)\n"*/,
+                           sa_p->ips_key_bits_a, keyminbits, keymaxbits);
+               ret=-EINVAL;
+               goto ixt_out;
+       }
+       /* save auth key pointer */
+       sa_p->ips_auth_bits = ixt_a->ixt_a_keylen * 8; /* XXX XXX */
+       akp = sa_p->ips_key_a;
+       aks = sa_p->ips_key_a_size;
+
+       /* will hold: 2 ctx and a blocksize buffer: kb */
+       sa_p->ips_key_a_size = ixt_a->ixt_a_ctx_size;
+       if((sa_p->ips_key_a = 
+               (caddr_t) kmalloc(sa_p->ips_key_a_size, GFP_ATOMIC)) == NULL) {
+               ret=-ENOMEM;
+               goto ixt_out;
+       }
+       ixt_a->ixt_a_hmac_set_key(ixt_a, sa_p->ips_key_a, akp, sa_p->ips_key_bits_a/8); /* XXX XXX */
+       ret=0;
+       memset(akp, 0, aks);
+       kfree(akp);
+                       
+ixt_out:
+       return ret;
+}
+
+
+int ipsec_alg_sa_esp_hash(const struct ipsec_sa *sa_p, const __u8 *espp,
+                         int len, __u8 *hash, int hashlen)
+{
+       struct ipsec_alg_auth *ixt_a=sa_p->ips_alg_auth;
+       if (!ixt_a) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:ipsec_sa_esp_hash: "
+                           "NULL ipsec_alg_auth object\n");
+               return -EPROTO;
+       }
+       KLIPS_PRINT(debug_tunnel|debug_rcv,
+                       "klips_debug:ipsec_sa_esp_hash: "
+                       "hashing %p (%d bytes) to %p (%d bytes)\n",
+                       espp, len,
+                       hash, hashlen);
+       ixt_a->ixt_a_hmac_hash(ixt_a,
+                       sa_p->ips_key_a, 
+                       espp, len,
+                       hash, hashlen);
+       return 0;
+}
+
+/***************************************************************
+ *
+ *     INTERFACE for module loading,testing, and unloading
+ *
+ ***************************************************************/
+
+/* validation for registering (enc) module */
+static int check_enc(struct ipsec_alg_enc *ixt)
+{
+       int ret=-EINVAL;
+       if (ixt->ixt_common.ixt_blocksize==0) /*  || ixt->ixt_common.ixt_blocksize%2) need for ESP_NULL */
+               barf_out(KERN_ERR "invalid blocksize=%d\n", ixt->ixt_common.ixt_blocksize);
+       if (ixt->ixt_common.ixt_support.ias_keyminbits==0
+           && ixt->ixt_common.ixt_support.ias_keymaxbits==0
+           && ixt->ixt_e_keylen==0)
+               goto zero_key_ok;
+       
+       if (ixt->ixt_common.ixt_support.ias_keyminbits==0)
+               barf_out(KERN_ERR "invalid keyminbits=%d\n", ixt->ixt_common.ixt_support.ias_keyminbits);
+       
+       if (ixt->ixt_common.ixt_support.ias_keymaxbits==0)
+               barf_out(KERN_ERR "invalid keymaxbits=%d\n", ixt->ixt_common.ixt_support.ias_keymaxbits);
+       
+       if (ixt->ixt_e_keylen==0)
+               barf_out(KERN_ERR "invalid keysize=%d\n", ixt->ixt_e_keylen);
+       
+zero_key_ok:
+       if (ixt->ixt_e_ctx_size==0 && ixt->ixt_e_new_key == NULL)
+               barf_out(KERN_ERR "invalid key_e_size=%d and ixt_e_new_key=NULL\n", ixt->ixt_e_ctx_size);
+       if (ixt->ixt_e_cbc_encrypt==NULL)
+               barf_out(KERN_ERR "e_cbc_encrypt() must be not NULL\n");
+       ret=0;
+out:
+       return ret;
+}
+
+/* validation for registering (auth) module */
+static int check_auth(struct ipsec_alg_auth *ixt)
+{
+       int ret=-EINVAL;
+       if (ixt->ixt_common.ixt_support.ias_id==0 || ixt->ixt_common.ixt_support.ias_id > SADB_AALG_MAX)
+               barf_out("invalid alg_id=%d > %d (SADB_AALG_MAX)\n",
+                        ixt->ixt_common.ixt_support.ias_id, SADB_AALG_MAX);
+
+       if (ixt->ixt_common.ixt_blocksize==0
+           || ixt->ixt_common.ixt_blocksize%2)
+               barf_out(KERN_ERR "invalid blocksize=%d\n",
+                        ixt->ixt_common.ixt_blocksize);
+
+       if (ixt->ixt_common.ixt_blocksize>AH_BLKLEN_MAX)
+               barf_out(KERN_ERR "sorry blocksize=%d > %d. "
+                       "Please increase AH_BLKLEN_MAX and recompile\n", 
+                       ixt->ixt_common.ixt_blocksize,
+                       AH_BLKLEN_MAX);
+       if (ixt->ixt_common.ixt_support.ias_keyminbits==0 && ixt->ixt_common.ixt_support.ias_keymaxbits==0 && ixt->ixt_a_keylen==0)
+               goto zero_key_ok;
+       if (ixt->ixt_common.ixt_support.ias_keyminbits==0)
+               barf_out(KERN_ERR "invalid keyminbits=%d\n", ixt->ixt_common.ixt_support.ias_keyminbits);
+       if (ixt->ixt_common.ixt_support.ias_keymaxbits==0)
+               barf_out(KERN_ERR "invalid keymaxbits=%d\n", ixt->ixt_common.ixt_support.ias_keymaxbits);
+       if (ixt->ixt_common.ixt_support.ias_keymaxbits!=ixt->ixt_common.ixt_support.ias_keyminbits)
+               barf_out(KERN_ERR "keymaxbits must equal keyminbits (not sure).\n");
+       if (ixt->ixt_a_keylen==0)
+               barf_out(KERN_ERR "invalid keysize=%d\n", ixt->ixt_a_keylen);
+zero_key_ok:
+       if (ixt->ixt_a_ctx_size==0)
+               barf_out(KERN_ERR "invalid a_ctx_size=%d\n", ixt->ixt_a_ctx_size);
+       if (ixt->ixt_a_hmac_set_key==NULL)
+               barf_out(KERN_ERR "a_hmac_set_key() must be not NULL\n");
+       if (ixt->ixt_a_hmac_hash==NULL)
+               barf_out(KERN_ERR "a_hmac_hash() must be not NULL\n");
+       ret=0;
+out:
+       return ret;
+}
+
+/* 
+ * Generic (enc, auth) registration entry point 
+ */
+int register_ipsec_alg(struct ipsec_alg *ixt)
+{
+       int ret=-EINVAL;
+       /*      Validation      */
+       if (ixt==NULL)
+               barf_out("NULL ipsec_alg object passed\n");
+       if ((ixt->ixt_version&0xffffff00) != (IPSEC_ALG_VERSION&0xffffff00))
+               barf_out("incorrect version: %d.%d.%d-%d, "
+                       "must be %d.%d.%d[-%d]\n",
+                               IPSEC_ALG_VERSION_QUAD(ixt->ixt_version), 
+                               IPSEC_ALG_VERSION_QUAD(IPSEC_ALG_VERSION));
+
+       switch(ixt->ixt_alg_type) {
+               case IPSEC_ALG_TYPE_AUTH:
+                       if ((ret=check_auth((struct ipsec_alg_auth *)ixt)<0))
+                               goto out;
+                       break;
+               case IPSEC_ALG_TYPE_ENCRYPT: 
+                       if ((ret=check_enc((struct ipsec_alg_enc *)ixt)<0))
+                               goto out;
+                       /* 
+                        * Adapted two lines below: 
+                        *      ivlen == 0 is possible (NULL enc has blocksize==1)
+                        *
+                        * fixed NULL support by David De Reu <DeReu@tComLabs.com>
+                        */
+                       if (ixt->ixt_support.ias_ivlen == 0
+                           && ixt->ixt_blocksize > 1) {
+                               ixt->ixt_support.ias_ivlen = ixt->ixt_blocksize*8;
+                       }
+                       break;
+               default:
+                       barf_out("alg_type=%d not supported\n", ixt->ixt_alg_type);
+       }
+       INIT_LIST_HEAD(&ixt->ixt_list);
+       ret = ipsec_alg_insert(ixt);
+       if (ret<0) 
+               barf_out(KERN_WARNING "ipsec_alg for alg_id=%d failed."
+                               "Not loaded (ret=%d).\n",
+                               ixt->ixt_support.ias_id, ret);
+
+
+       ret = pfkey_list_insert_supported((struct ipsec_alg_supported *)&ixt->ixt_support
+                                         , &(pfkey_supported_list[SADB_SATYPE_ESP]));
+
+       if (ret==0) {
+               ixt->ixt_state |= IPSEC_ALG_ST_SUPP;
+               /*      send register event to userspace        */
+               pfkey_register_reply(SADB_SATYPE_ESP, NULL);
+       } else
+               printk(KERN_ERR "pfkey_list_insert_supported returned %d. "
+                               "Loading anyway.\n", ret);
+       ret=0;
+out:
+       return ret;
+}
+
+/* 
+ *     unregister ipsec_alg object from own tables, if 
+ *     success => calls pfkey_list_remove_supported()
+ */
+int unregister_ipsec_alg(struct ipsec_alg *ixt) {
+       int ret= -EINVAL;
+       switch(ixt->ixt_alg_type) {
+               case IPSEC_ALG_TYPE_AUTH:
+               case IPSEC_ALG_TYPE_ENCRYPT: 
+                       break;
+               default:
+                       /*      this is not a typo :) */
+                       barf_out("frog found in list (\"%s\"): ixt_p=NULL\n", 
+                               ixt->ixt_name);
+       }
+
+       ret=ipsec_alg_delete(ixt);
+       if (ixt->ixt_state&IPSEC_ALG_ST_SUPP) {
+               ixt->ixt_state &= ~IPSEC_ALG_ST_SUPP;
+               pfkey_list_remove_supported((struct ipsec_alg_supported *)&ixt->ixt_support
+                                           , &(pfkey_supported_list[SADB_SATYPE_ESP]));
+
+               /*      send register event to userspace        */
+               pfkey_register_reply(SADB_SATYPE_ESP, NULL);
+       }
+
+out:
+       return ret;
+}
+
+/*
+ *     Must be called from user context
+ *     used at module load type for testing algo implementation
+ */
+static int ipsec_alg_test_encrypt(int enc_alg, int test) {
+       int ret;
+       caddr_t buf = NULL;
+       int iv_size, keysize, key_e_size;
+       struct ipsec_alg_enc *ixt_e;
+       void *tmp_key_e = NULL;
+       #define BUFSZ   1024
+       #define MARGIN  0
+       #define test_enc   (buf+MARGIN)
+       #define test_dec   (test_enc+BUFSZ+MARGIN)
+       #define test_tmp   (test_dec+BUFSZ+MARGIN)
+       #define test_key_e (test_tmp+BUFSZ+MARGIN)
+       #define test_iv    (test_key_e+key_e_size+MARGIN)
+       #define test_key   (test_iv+iv_size+MARGIN)
+       #define test_size  (BUFSZ*3+key_e_size+iv_size+keysize+MARGIN*7)
+       ixt_e=(struct ipsec_alg_enc *)ipsec_alg_get(IPSEC_ALG_TYPE_ENCRYPT, enc_alg);
+       if (ixt_e==NULL) {
+               KLIPS_PRINT(1, 
+                           "klips_debug: ipsec_alg_test_encrypt: "
+                           "encalg=%d object not found\n",
+                           enc_alg);
+               ret=-EINVAL;
+               goto out;
+       }
+       iv_size=ixt_e->ixt_common.ixt_support.ias_ivlen / 8;
+       key_e_size=ixt_e->ixt_e_ctx_size;
+       keysize=ixt_e->ixt_e_keylen;
+       KLIPS_PRINT(1, 
+                   "klips_debug: ipsec_alg_test_encrypt: "
+                   "enc_alg=%d blocksize=%d key_e_size=%d keysize=%d\n",
+                   enc_alg, iv_size, key_e_size, keysize);
+       if ((buf=kmalloc (test_size, GFP_KERNEL)) == NULL) {
+               ret= -ENOMEM;
+               goto out;
+       }
+       get_random_bytes(test_key, keysize);
+       get_random_bytes(test_iv, iv_size);
+       if (ixt_e->ixt_e_new_key) {
+               tmp_key_e = ixt_e->ixt_e_new_key(ixt_e, test_key, keysize);
+               ret = tmp_key_e ? 0 : -EINVAL;
+       } else {
+               tmp_key_e = test_key_e;
+               ret = ixt_e->ixt_e_set_key(ixt_e, test_key_e, test_key, keysize);
+       }
+       if (ret < 0)
+               goto out;
+       get_random_bytes(test_enc, BUFSZ);
+       memcpy(test_tmp, test_enc, BUFSZ);
+       ret=ixt_e->ixt_e_cbc_encrypt(ixt_e, tmp_key_e, test_enc, BUFSZ, test_iv, 1);
+       printk(KERN_INFO
+                   "klips_info: ipsec_alg_test_encrypt: "
+                   "cbc_encrypt=1 ret=%d\n", 
+                       ret);
+       ret=memcmp(test_enc, test_tmp, BUFSZ);
+       printk(KERN_INFO
+                   "klips_info: ipsec_alg_test_encrypt: "
+                   "memcmp(enc, tmp) ret=%d: %s\n", ret,
+                       ret!=0? "OK. (encr->DIFFers)" : "FAIL! (encr->SAME)" );
+       memcpy(test_dec, test_enc, BUFSZ);
+       ret=ixt_e->ixt_e_cbc_encrypt(ixt_e, tmp_key_e, test_dec, BUFSZ, test_iv, 0);
+       printk(KERN_INFO
+                   "klips_info: ipsec_alg_test_encrypt: "
+                   "cbc_encrypt=0 ret=%d\n", ret);
+       ret=memcmp(test_dec, test_tmp, BUFSZ);
+       printk(KERN_INFO
+                   "klips_info: ipsec_alg_test_encrypt: "
+                   "memcmp(dec,tmp) ret=%d: %s\n", ret,
+                       ret==0? "OK. (encr->decr->SAME)" : "FAIL! (encr->decr->DIFFers)" );
+       {
+               /*      Shamelessly taken from drivers/md sources  O:)  */
+               unsigned long now;
+               int i, count, max=0;
+               int encrypt, speed;
+               for (encrypt=0; encrypt <2;encrypt ++) {
+                       for (i = 0; i < 5; i++) {
+                               now = jiffies;
+                               count = 0;
+                               while (jiffies == now) {
+                                       mb();
+                                       ixt_e->ixt_e_cbc_encrypt(ixt_e, 
+                                                       tmp_key_e, test_tmp, 
+                                                       BUFSZ, test_iv, encrypt);
+                                       mb();
+                                       count++;
+                                       mb();
+                               }
+                               if (count > max)
+                                       max = count;
+                       }
+                       speed = max * (HZ * BUFSZ / 1024);
+                       printk(KERN_INFO
+                                   "klips_info: ipsec_alg_test_encrypt: "
+                                   "%s %s speed=%d KB/s\n", 
+                                   ixt_e->ixt_common.ixt_name,
+                                   encrypt? "encrypt": "decrypt", speed);
+               }
+       }
+out:
+       if (tmp_key_e && ixt_e->ixt_e_destroy_key) ixt_e->ixt_e_destroy_key(ixt_e, tmp_key_e);
+       if (buf) kfree(buf);
+       if (ixt_e) ipsec_alg_put((struct ipsec_alg *)ixt_e);
+       return ret;
+       #undef test_enc  
+       #undef test_dec  
+       #undef test_tmp  
+       #undef test_key_e
+       #undef test_iv   
+       #undef test_key  
+       #undef test_size 
+}
+
+/*
+ *     Must be called from user context
+ *     used at module load type for testing algo implementation
+ */
+static int ipsec_alg_test_auth(int auth_alg, int test) {
+       int ret;
+       caddr_t buf = NULL;
+       int blocksize, keysize, key_a_size;
+       struct ipsec_alg_auth *ixt_a;
+       #define BUFSZ   1024
+       #define MARGIN  0
+       #define test_auth  (buf+MARGIN)
+       #define test_key_a (test_auth+BUFSZ+MARGIN)
+       #define test_key   (test_key_a+key_a_size+MARGIN)
+       #define test_hash  (test_key+keysize+MARGIN)
+       #define test_size  (BUFSZ+key_a_size+keysize+AHHMAC_HASHLEN+MARGIN*4)
+       ixt_a=(struct ipsec_alg_auth *)ipsec_alg_get(IPSEC_ALG_TYPE_AUTH, auth_alg);
+       if (ixt_a==NULL) {
+               KLIPS_PRINT(1, 
+                           "klips_debug: ipsec_alg_test_auth: "
+                           "encalg=%d object not found\n",
+                           auth_alg);
+               ret=-EINVAL;
+               goto out;
+       }
+       blocksize=ixt_a->ixt_common.ixt_blocksize;
+       key_a_size=ixt_a->ixt_a_ctx_size;
+       keysize=ixt_a->ixt_a_keylen;
+       KLIPS_PRINT(1, 
+                   "klips_debug: ipsec_alg_test_auth: "
+                   "auth_alg=%d blocksize=%d key_a_size=%d keysize=%d\n",
+                   auth_alg, blocksize, key_a_size, keysize);
+       if ((buf=kmalloc (test_size, GFP_KERNEL)) == NULL) {
+               ret= -ENOMEM;
+               goto out;
+       }
+       get_random_bytes(test_key, keysize);
+       ret = ixt_a->ixt_a_hmac_set_key(ixt_a, test_key_a, test_key, keysize);
+       if (ret < 0 )
+               goto out;
+       get_random_bytes(test_auth, BUFSZ);
+       ret=ixt_a->ixt_a_hmac_hash(ixt_a, test_key_a, test_auth, BUFSZ, test_hash, AHHMAC_HASHLEN);
+       printk(KERN_INFO
+                   "klips_info: ipsec_alg_test_auth: "
+                   "ret=%d\n", ret);
+       {
+               /*      Shamelessly taken from drivers/md sources  O:)  */
+               unsigned long now;
+               int i, count, max=0;
+               int speed;
+               for (i = 0; i < 5; i++) {
+                       now = jiffies;
+                       count = 0;
+                       while (jiffies == now) {
+                               mb();
+                               ixt_a->ixt_a_hmac_hash(ixt_a, test_key_a, test_auth, BUFSZ, test_hash, AHHMAC_HASHLEN);
+                               mb();
+                               count++;
+                               mb();
+                       }
+                       if (count > max)
+                               max = count;
+               }
+               speed = max * (HZ * BUFSZ / 1024);
+               printk(KERN_INFO
+                               "klips_info: ipsec_alg_test_auth: "
+                               "%s hash speed=%d KB/s\n", 
+                               ixt_a->ixt_common.ixt_name,
+                               speed);
+       }
+out:
+       if (buf) kfree(buf);
+       if (ixt_a) ipsec_alg_put((struct ipsec_alg *)ixt_a);
+       return ret;
+       #undef test_auth 
+       #undef test_key_a
+       #undef test_key  
+       #undef test_hash 
+       #undef test_size 
+}
+
+int ipsec_alg_test(unsigned alg_type, unsigned alg_id, int test) {
+       switch(alg_type) {
+               case IPSEC_ALG_TYPE_ENCRYPT:
+                       return ipsec_alg_test_encrypt(alg_id, test);
+                       break;
+               case IPSEC_ALG_TYPE_AUTH:
+                       return ipsec_alg_test_auth(alg_id, test);
+                       break;
+       }
+       printk(KERN_ERR "klips_info: ipsec_alg_test() called incorrectly: "
+                       "alg_type=%d alg_id=%d\n",
+                       alg_type, alg_id);
+       return -EINVAL;
+}
+
+int ipsec_alg_init(void) {
+       KLIPS_PRINT(1, "klips_info:ipsec_alg_init: "
+                       "KLIPS alg v=%d.%d.%d-%d (EALG_MAX=%d, AALG_MAX=%d)\n",
+                       IPSEC_ALG_VERSION_QUAD(IPSEC_ALG_VERSION),
+                       SADB_EALG_MAX, SADB_AALG_MAX);
+       /*      Initialize tables */
+       write_lock_bh(&ipsec_alg_lock);
+       ipsec_alg_hash_init();
+       write_unlock_bh(&ipsec_alg_lock);
+
+       /*      Initialize static algos         */
+       KLIPS_PRINT(1, "klips_info:ipsec_alg_init: "
+               "calling ipsec_alg_static_init()\n");
+
+       /* If we are suppose to use our AES, and don't have
+        * CryptoAPI enabled...
+        */
+#if defined(CONFIG_KLIPS_ENC_AES) && CONFIG_KLIPS_ENC_AES && !defined(CONFIG_KLIPS_ENC_AES_MODULE) 
+#if defined(CONFIG_KLIPS_ENC_CRYPTOAPI) && CONFIG_KLIPS_ENC_CRYPTOAPI
+#warning "Using built-in AES rather than CryptoAPI AES"
+#endif 
+       {
+               extern int ipsec_aes_init(void);
+               ipsec_aes_init();
+       }
+#endif
+
+#if defined(CONFIG_KLIPS_ENC_3DES) && CONFIG_KLIPS_ENC_3DES && !defined(CONFIG_KLIPS_ENC_3DES_MODULE) 
+#if defined(CONFIG_KLIPS_ENC_CRYPTOAPI) && CONFIG_KLIPS_ENC_CRYPTOAPI
+#warning "Using built-in 3des rather than CryptoAPI 3des"
+#endif 
+       {
+               extern int ipsec_3des_init(void);
+               ipsec_3des_init();
+       }
+#endif
+#if defined(CONFIG_KLIPS_ENC_NULL) && CONFIG_KLIPS_ENC_NULL && !defined(CONFIG_KLIPS_ENC_NULL_MODULE) 
+#if defined(CONFIG_KLIPS_ENC_CRYPTOAPI) && CONFIG_KLIPS_ENC_CRYPTOAPI
+#warning "Using built-in null cipher rather than CryptoAPI null cipher"
+#endif 
+#warning "Building with null cipher (ESP_NULL), blame on you :-)"
+       {
+               extern int ipsec_null_init(void);
+               ipsec_null_init();
+       }
+#endif
+
+
+       /* If we are doing CryptoAPI, then init */
+#if defined(CONFIG_KLIPS_ENC_CRYPTOAPI) && CONFIG_KLIPS_ENC_CRYPTOAPI && !defined(CONFIG_KLIPS_ENC_CRYPTOAPI_MODULE)
+       {
+                extern int ipsec_cryptoapi_init(void);
+                ipsec_cryptoapi_init();
+        }
+#endif
+
+
+       return 0;
+}
+
+/**********************************************
+ *
+ *     INTERFACE for ipsec_sa init and wipe
+ *
+ **********************************************/
+
+/*     
+ *     Called from pluto -> pfkey_v2_parser.c:pfkey_ipsec_sa_init()    
+ */
+int ipsec_alg_sa_init(struct ipsec_sa *sa_p) {
+       struct ipsec_alg_enc *ixt_e;
+       struct ipsec_alg_auth *ixt_a;
+
+       /*      Only ESP for now ... */
+       if (sa_p->ips_said.proto != IPPROTO_ESP)
+               return -EPROTONOSUPPORT;
+
+       KLIPS_PRINT(debug_pfkey, "klips_debug: ipsec_alg_sa_init() :"
+                       "entering for encalg=%d, authalg=%d\n",
+                           sa_p->ips_encalg, sa_p->ips_authalg);
+
+       if ((ixt_e=(struct ipsec_alg_enc *)
+               ipsec_alg_get(IPSEC_ALG_TYPE_ENCRYPT, sa_p->ips_encalg))) {
+               KLIPS_PRINT(debug_pfkey,
+                   "klips_debug: ipsec_alg_sa_init() :"
+                   "found ipsec_alg (ixt_e=%p) for encalg=%d\n",
+                   ixt_e, sa_p->ips_encalg);
+               sa_p->ips_alg_enc=ixt_e;
+       }
+
+       if ((ixt_a=(struct ipsec_alg_auth *)
+               ipsec_alg_get(IPSEC_ALG_TYPE_AUTH, sa_p->ips_authalg))) {
+               KLIPS_PRINT(debug_pfkey,
+                   "klips_debug: ipsec_alg_sa_init() :"
+                   "found ipsec_alg (ixt_a=%p) for auth=%d\n",
+                   ixt_a, sa_p->ips_authalg);
+               sa_p->ips_alg_auth=ixt_a;
+       }
+       return 0;
+}
+
+/*     
+ *     Called from pluto -> ipsec_sa.c:ipsec_sa_delchain()
+ */
+int ipsec_alg_sa_wipe(struct ipsec_sa *sa_p) {
+       struct ipsec_alg *ixt;
+       if ((ixt=(struct ipsec_alg *)sa_p->ips_alg_enc)) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug: ipsec_alg_sa_wipe() :"
+                               "unlinking for encalg=%d\n",
+                               ixt->ixt_support.ias_id);
+               ipsec_alg_put(ixt);
+       }
+       if ((ixt=(struct ipsec_alg *)sa_p->ips_alg_auth)) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug: ipsec_alg_sa_wipe() :"
+                               "unlinking for authalg=%d\n",
+                               ixt->ixt_support.ias_id);
+               ipsec_alg_put(ixt);
+       }
+       return 0;
+}
+
+IPSEC_PROCFS_DEBUG_NO_STATIC
+int
+ipsec_xform_get_info(char *buffer,
+                    char **start,
+                    off_t offset,
+                    int length     IPSEC_PROC_LAST_ARG)
+{
+       int len = 0;
+       off_t begin = 0;
+       int i;
+       struct list_head *head;
+       struct ipsec_alg *ixt;
+
+       KLIPS_PRINT(debug_tunnel & DB_TN_PROCFS,
+                   "klips_debug:ipsec_tncfg_get_info: "
+                   "buffer=0p%p, *start=0p%p, offset=%d, length=%d\n",
+                   buffer,
+                   *start,
+                   (int)offset,
+                   length);
+
+       for(i = 0, head = ipsec_alg_hash_table;
+           i<IPSEC_ALG_HASHSZ;
+           i++, head++)
+       {
+               struct list_head *p;
+               for (p=head->next; p!=head; p=p->next)
+               {
+                       ixt = list_entry(p, struct ipsec_alg, ixt_list);
+                       len += ipsec_snprintf(buffer+len, length-len,
+                                             "VERSION=%d TYPE=%d ID=%d NAME=%s REFCNT=%d ",
+                                             ixt->ixt_version, ixt->ixt_alg_type, ixt->ixt_support.ias_id,
+                                             ixt->ixt_name, ixt->ixt_refcnt);
+
+                       len += ipsec_snprintf(buffer+len, length-len,
+                                             "STATE=%08x BLOCKSIZE=%d IVLEN=%d KEYMINBITS=%d KEYMAXBITS=%d ",
+                                             ixt->ixt_state, ixt->ixt_blocksize,
+                                             ixt->ixt_support.ias_ivlen, ixt->ixt_support.ias_keyminbits, ixt->ixt_support.ias_keymaxbits);
+
+                       len += ipsec_snprintf(buffer+len, length-len,
+                                             "IVLEN=%d KEYMINBITS=%d KEYMAXBITS=%d ",
+                                             ixt->ixt_support.ias_ivlen, ixt->ixt_support.ias_keyminbits, ixt->ixt_support.ias_keymaxbits);
+
+                       switch(ixt->ixt_alg_type)
+                       {
+                       case IPSEC_ALG_TYPE_AUTH:
+                       {
+                               struct ipsec_alg_auth *auth = (struct ipsec_alg_auth *)ixt;
+
+                               len += ipsec_snprintf(buffer+len, length-len,
+                                                     "KEYLEN=%d CTXSIZE=%d AUTHLEN=%d ",
+                                                     auth->ixt_a_keylen, auth->ixt_a_ctx_size,
+                                                     auth->ixt_a_authlen);
+                               break;
+                       }
+                       case IPSEC_ALG_TYPE_ENCRYPT:
+                       {
+                               struct ipsec_alg_enc *enc = (struct ipsec_alg_enc *)ixt;
+                               len += ipsec_snprintf(buffer+len, length-len,
+                                                     "KEYLEN=%d CTXSIZE=%d ",
+                                                     enc->ixt_e_keylen, enc->ixt_e_ctx_size);
+
+                               break;
+                       }
+                       }
+
+                       len += ipsec_snprintf(buffer+len, length-len, "\n");
+               }
+       } 
+
+       *start = buffer + (offset - begin);     /* Start of wanted data */
+       len -= (offset - begin);                        /* Start slop */
+       if (len > length)
+               len = length;
+       return len;
+}
+
+
+/*
+ *     As the author of this module, I ONLY ALLOW using it from
+ *     GPL (or same LICENSE TERMS as kernel source) modules.
+ *
+ *     In respect to hardware crypto engines this means:
+ *     * Closed-source device drivers ARE NOT ALLOWED to use 
+ *       this interface.
+ *     * Closed-source VHDL/Verilog firmware running on 
+ *       the crypto hardware device IS ALLOWED to use this interface
+ *       via a GPL (or same LICENSE TERMS as kernel source) device driver.
+ *     --Juan Jose Ciarlante 20/03/2002 (thanks RGB for the correct wording)
+ */
+
+/*     
+ *     These symbols can only be used from GPL modules 
+ *     for now, I'm disabling this because it creates false
+ *     symbol problems for old modutils.
+ */
+
+#ifdef CONFIG_MODULES
+#ifndef NET_26
+#if 0
+#ifndef EXPORT_SYMBOL_GPL 
+#undef EXPORT_SYMBOL_GPL
+#define EXPORT_SYMBOL_GPL EXPORT_SYMBOL
+#endif 
+#endif
+EXPORT_SYMBOL(register_ipsec_alg);
+EXPORT_SYMBOL(unregister_ipsec_alg);
+EXPORT_SYMBOL(ipsec_alg_test);
+#endif
+#endif
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/ipsec_alg_cryptoapi.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,455 @@
+/*
+ * ipsec_alg to linux cryptoapi GLUE
+ *
+ * Authors: CODE.ar TEAM
+ *     Harpo MAxx <harpo@linuxmendoza.org.ar>
+ *     JuanJo Ciarlante <jjo-ipsec@mendoza.gov.ar>
+ *     Luciano Ruete <docemeses@softhome.net>
+ * 
+ * ipsec_alg_cryptoapi.c,v 1.1.2.1 2003/11/21 18:12:23 jjo Exp
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * Example usage:
+ *   modinfo -p ipsec_cryptoapi   (quite useful info, including supported algos)
+ *   modprobe ipsec_cryptoapi
+ *   modprobe ipsec_cryptoapi test=1
+ *   modprobe ipsec_cryptoapi excl=1                     (exclusive cipher/algo)
+ *   modprobe ipsec_cryptoapi noauto=1  aes=1 twofish=1  (only these ciphers)
+ *   modprobe ipsec_cryptoapi aes=128,128                (force these keylens)
+ *   modprobe ipsec_cryptoapi des_ede3=0                 (everything but 3DES)
+ */
+#ifndef AUTOCONF_INCLUDED
+#include <linux/config.h>
+#endif
+#include <linux/version.h>
+
+/*     
+ *     special case: ipsec core modular with this static algo inside:
+ *     must avoid MODULE magic for this file
+ */
+#if defined(CONFIG_KLIPS_MODULE) && defined(CONFIG_KLIPS_ENC_CRYPTOAPI)
+#undef MODULE
+#endif
+
+#include <linux/module.h>
+#include <linux/init.h>
+
+#include <linux/kernel.h> /* printk() */
+#include <linux/errno.h>  /* error codes */
+#include <linux/types.h>  /* size_t */
+#include <linux/string.h>
+
+/* Check if __exit is defined, if not null it */
+#ifndef __exit
+#define __exit
+#endif
+
+/* warn the innocent */
+#if !defined (CONFIG_CRYPTO) && !defined (CONFIG_CRYPTO_MODULE)
+#warning "No linux CryptoAPI found, install 2.4.22+ or 2.6.x"
+#define NO_CRYPTOAPI_SUPPORT
+#endif
+
+#include "openswan.h"
+#include "openswan/ipsec_alg.h"
+#include "openswan/ipsec_policy.h"
+
+#include <linux/crypto.h>
+#ifdef CRYPTO_API_VERSION_CODE
+#warning "Old CryptoAPI is not supported. Only linux-2.4.22+ or linux-2.6.x are supported"
+#define NO_CRYPTOAPI_SUPPORT
+#endif
+
+#ifdef NO_CRYPTOAPI_SUPPORT
+#warning "Building an unusable module :P"
+/* Catch old CryptoAPI by not allowing module to load */
+IPSEC_ALG_MODULE_INIT_STATIC( ipsec_cryptoapi_init )
+{
+       printk(KERN_WARNING "ipsec_cryptoapi.o was not built on stock Linux CryptoAPI (2.4.22+ or 2.6.x), not loading.\n");
+       return -EINVAL;
+}
+#else
+#include <asm/scatterlist.h>
+#include <asm/pgtable.h>
+#include <linux/mm.h>
+
+#define CIPHERNAME_AES         "aes"
+#define CIPHERNAME_1DES                "des"
+#define CIPHERNAME_3DES                "des3_ede"
+#define CIPHERNAME_BLOWFISH    "blowfish"
+#define CIPHERNAME_CAST                "cast5"
+#define CIPHERNAME_SERPENT     "serpent"
+#define CIPHERNAME_TWOFISH     "twofish"
+
+#define ESP_SERPENT            252     /* from ipsec drafts */
+#define ESP_TWOFISH            253     /* from ipsec drafts */
+
+#define DIGESTNAME_MD5         "md5"
+#define DIGESTNAME_SHA1                "sha1"
+
+MODULE_AUTHOR("Juanjo Ciarlante, Harpo MAxx, Luciano Ruete");
+static int debug_crypto=0;
+static int test_crypto=0;
+static int excl_crypto=0;
+
+static int noauto = 0;
+
+#ifdef module_param
+module_param(debug_crypto,int,0600)
+module_param(test_crypto,int,0600)
+module_param(excl_crypto,int,0600)
+
+module_param(noauto,int,0600)
+#else
+MODULE_PARM(debug_crypto, "i");
+MODULE_PARM(test_crypto, "i");
+MODULE_PARM(excl_crypto, "i");
+
+MODULE_PARM(noauto,"i");
+#endif
+MODULE_PARM_DESC(noauto, "Dont try all known algos, just setup enabled ones");
+
+#ifdef CONFIG_KLIPS_ENC_1DES
+static int des_ede1[] = {-1, -1};
+#endif
+static int des_ede3[] = {-1, -1};
+static int aes[] = {-1, -1};
+static int blowfish[] = {-1, -1};
+static int cast[] = {-1, -1};
+static int serpent[] = {-1, -1};
+static int twofish[] = {-1, -1};
+
+#ifdef CONFIG_KLIPS_ENC_1DES
+#ifdef module_param
+module_param_array(des_ede1,int,NULL,0)
+#else
+MODULE_PARM(des_ede1,"1-2i");
+#endif
+#endif
+#ifdef module_param
+module_param_array(des_ede3,int,NULL,0)
+module_param_array(aes,int,NULL,0)
+module_param_array(blowfish,int,NULL,0)
+module_param_array(cast,int,NULL,0)
+module_param_array(serpent,int,NULL,0)
+module_param_array(twofish,int,NULL,0)
+#else
+MODULE_PARM(des_ede3,"1-2i");
+MODULE_PARM(aes,"1-2i");
+MODULE_PARM(blowfish,"1-2i");
+MODULE_PARM(cast,"1-2i");
+MODULE_PARM(serpent,"1-2i");
+MODULE_PARM(twofish,"1-2i");
+#endif
+MODULE_PARM_DESC(des_ede1, "0: disable | 1: force_enable | min,max: dontuse");
+MODULE_PARM_DESC(des_ede3, "0: disable | 1: force_enable | min,max: dontuse");
+MODULE_PARM_DESC(aes, "0: disable | 1: force_enable | min,max: keybitlens");
+MODULE_PARM_DESC(blowfish, "0: disable | 1: force_enable | min,max: keybitlens");
+MODULE_PARM_DESC(cast, "0: disable | 1: force_enable | min,max: keybitlens");
+MODULE_PARM_DESC(serpent, "0: disable | 1: force_enable | min,max: keybitlens");
+MODULE_PARM_DESC(twofish, "0: disable | 1: force_enable | min,max: keybitlens");
+
+struct ipsec_alg_capi_cipher {
+       const char *ciphername; /* cryptoapi's ciphername */
+       unsigned blocksize;
+       unsigned short minbits;
+       unsigned short maxbits;
+       int *parm;              /* lkm param for this cipher */
+       struct ipsec_alg_enc alg;       /* note it's not a pointer */
+};
+
+static struct ipsec_alg_capi_cipher alg_capi_carray[] = {
+  { CIPHERNAME_AES,     16, 128, 256, aes,      { ixt_common:{ ixt_support:{ ias_id: ESP_AES}}}},
+  { CIPHERNAME_TWOFISH, 16, 128, 256, twofish,  { ixt_common:{ ixt_support:{ ias_id: ESP_TWOFISH,}}}},
+  { CIPHERNAME_SERPENT, 16, 128, 256, serpent,  { ixt_common:{ ixt_support:{ ias_id: ESP_SERPENT,}}}},
+  { CIPHERNAME_CAST,     8, 128, 128, cast   ,  { ixt_common:{ ixt_support:{ ias_id: ESP_CAST,}}}},
+  { CIPHERNAME_BLOWFISH, 8,  96, 448, blowfish, { ixt_common:{ ixt_support:{ ias_id: ESP_BLOWFISH,}}}},
+  { CIPHERNAME_3DES,     8, 192, 192, des_ede3, { ixt_common:{ ixt_support:{ ias_id: ESP_3DES,}}}},
+#ifdef CONFIG_KLIPS_ENC_1DES
+  { CIPHERNAME_1DES,     8,  64,  64, des_ede1, { ixt_common:{ ixt_support:{ ias_id: ESP_DES,}}}},
+#endif
+  { NULL, 0, 0, 0, NULL, {} }
+};
+
+#ifdef NOT_YET
+struct ipsec_alg_capi_digest {
+       const char *digestname; /* cryptoapi's digestname */
+       struct digest_implementation *di;
+       struct ipsec_alg_auth alg;      /* note it's not a pointer */
+};
+static struct ipsec_alg_capi_cipher alg_capi_darray[] = {
+       { DIGESTNAME_MD5,     NULL, { ixt_alg_id: AH_MD5, }},
+       { DIGESTNAME_SHA1,    NULL, { ixt_alg_id: AH_SHA, }},
+       { NULL, NULL, {} }
+};
+#endif
+/*
+ *     "generic" linux cryptoapi setup_cipher() function
+ */
+int setup_cipher(const char *ciphername)
+{
+       return crypto_alg_available(ciphername, 0);
+}
+
+/*
+ *     setups ipsec_alg_capi_cipher "hyper" struct components, calling
+ *     register_ipsec_alg for cointaned ipsec_alg object
+ */
+static void _capi_destroy_key (struct ipsec_alg_enc *alg, __u8 *key_e);
+static __u8 * _capi_new_key (struct ipsec_alg_enc *alg, const __u8 *key, size_t keylen);
+static int _capi_cbc_encrypt(struct ipsec_alg_enc *alg, __u8 * key_e, __u8 * in, int ilen, const __u8 * iv, int encrypt);
+
+static int
+setup_ipsec_alg_capi_cipher(struct ipsec_alg_capi_cipher *cptr)
+{
+       int ret;
+       cptr->alg.ixt_common.ixt_version = IPSEC_ALG_VERSION;
+       cptr->alg.ixt_common.ixt_module  = THIS_MODULE;
+       atomic_set (& cptr->alg.ixt_common.ixt_refcnt, 0);
+       strncpy (cptr->alg.ixt_common.ixt_name , cptr->ciphername, sizeof (cptr->alg.ixt_common.ixt_name));
+
+       cptr->alg.ixt_common.ixt_blocksize=cptr->blocksize;
+       cptr->alg.ixt_common.ixt_support.ias_keyminbits=cptr->minbits;
+       cptr->alg.ixt_common.ixt_support.ias_keymaxbits=cptr->maxbits;
+       cptr->alg.ixt_common.ixt_state = 0;
+       if (excl_crypto) cptr->alg.ixt_common.ixt_state |= IPSEC_ALG_ST_EXCL;
+       cptr->alg.ixt_e_keylen=cptr->alg.ixt_common.ixt_support.ias_keymaxbits/8;
+       cptr->alg.ixt_e_ctx_size = 0;
+       cptr->alg.ixt_common.ixt_support.ias_exttype = IPSEC_ALG_TYPE_ENCRYPT;
+       cptr->alg.ixt_e_new_key = _capi_new_key;
+       cptr->alg.ixt_e_destroy_key = _capi_destroy_key;
+       cptr->alg.ixt_e_cbc_encrypt = _capi_cbc_encrypt;
+       cptr->alg.ixt_common.ixt_data = cptr;
+
+       ret=register_ipsec_alg_enc(&cptr->alg);
+       printk(KERN_INFO "KLIPS cryptoapi interface: " 
+                       "alg_type=%d alg_id=%d name=%s "
+                       "keyminbits=%d keymaxbits=%d, %s(%d)\n", 
+                               cptr->alg.ixt_common.ixt_support.ias_exttype, 
+                               cptr->alg.ixt_common.ixt_support.ias_id, 
+                               cptr->alg.ixt_common.ixt_name, 
+                               cptr->alg.ixt_common.ixt_support.ias_keyminbits,
+                               cptr->alg.ixt_common.ixt_support.ias_keymaxbits,
+              ret ? "not found" : "found", ret);
+       return ret;
+}
+/*
+ *     called in ipsec_sa_wipe() time, will destroy key contexts
+ *     and do 1 unbind()
+ */
+static void 
+_capi_destroy_key (struct ipsec_alg_enc *alg, __u8 *key_e)
+{
+       struct crypto_tfm *tfm=(struct crypto_tfm*)key_e;
+       
+       if (debug_crypto > 0)
+               printk(KERN_DEBUG "klips_debug: _capi_destroy_key:"
+                               "name=%s key_e=%p \n",
+                               alg->ixt_common.ixt_name, key_e);
+       if (!key_e) {
+               printk(KERN_ERR "klips_debug: _capi_destroy_key:"
+                               "name=%s NULL key_e!\n",
+                               alg->ixt_common.ixt_name);
+               return;
+       }
+       crypto_free_tfm(tfm);
+}
+       
+/*
+ *     create new key context, need alg->ixt_data to know which
+ *     (of many) cipher inside this module is the target
+ */
+static __u8 *
+_capi_new_key (struct ipsec_alg_enc *alg, const __u8 *key, size_t keylen)
+{
+       struct ipsec_alg_capi_cipher *cptr;
+       struct crypto_tfm *tfm=NULL;
+
+       cptr = alg->ixt_common.ixt_data;
+       if (!cptr) {
+               printk(KERN_ERR "_capi_new_key(): "
+                               "NULL ixt_data (?!) for \"%s\" algo\n" 
+                               , alg->ixt_common.ixt_name);
+               goto err;
+       }
+       if (debug_crypto > 0)
+               printk(KERN_DEBUG "klips_debug:_capi_new_key:"
+                               "name=%s cptr=%p key=%p keysize=%d\n",
+                               alg->ixt_common.ixt_name, cptr, key, keylen);
+       
+       /*      
+        *      alloc tfm
+        */
+       tfm = crypto_alloc_tfm(cptr->ciphername, CRYPTO_TFM_MODE_CBC);
+       if (!tfm) {
+               printk(KERN_ERR "_capi_new_key(): "
+                               "NULL tfm for \"%s\" cryptoapi (\"%s\") algo\n" 
+                       , alg->ixt_common.ixt_name, cptr->ciphername);
+               goto err;
+       }
+       if (crypto_cipher_setkey(tfm, key, keylen) < 0) {
+               printk(KERN_ERR "_capi_new_key(): "
+                               "failed new_key() for \"%s\" cryptoapi algo (keylen=%d)\n" 
+                       , alg->ixt_common.ixt_name, keylen);
+               crypto_free_tfm(tfm);
+               tfm=NULL;
+       }
+err:
+       if (debug_crypto > 0)
+               printk(KERN_DEBUG "klips_debug:_capi_new_key:"
+                               "name=%s key=%p keylen=%d tfm=%p\n",
+                               alg->ixt_common.ixt_name, key, keylen, tfm);
+       return (__u8 *) tfm;
+}
+/*
+ *     core encryption function: will use cx->ci to call actual cipher's
+ *     cbc function
+ */
+static int 
+_capi_cbc_encrypt(struct ipsec_alg_enc *alg, __u8 * key_e, __u8 * in, int ilen, const __u8 * iv, int encrypt) {
+       int error =0;
+       struct crypto_tfm *tfm=(struct crypto_tfm *)key_e;
+       struct scatterlist sg = { 
+               .page = virt_to_page(in),
+               .offset = (unsigned long)(in) % PAGE_SIZE,
+               .length=ilen,
+       };
+       if (debug_crypto > 1)
+               printk(KERN_DEBUG "klips_debug:_capi_cbc_encrypt:"
+                               "key_e=%p "
+                               "in=%p out=%p ilen=%d iv=%p encrypt=%d\n"
+                               , key_e
+                               , in, in, ilen, iv, encrypt);
+       crypto_cipher_set_iv(tfm, iv, crypto_tfm_alg_ivsize(tfm));
+       if (encrypt)
+               error = crypto_cipher_encrypt (tfm, &sg, &sg, ilen);
+       else
+               error = crypto_cipher_decrypt (tfm, &sg, &sg, ilen);
+       if (debug_crypto > 1)
+               printk(KERN_DEBUG "klips_debug:_capi_cbc_encrypt:"
+                               "error=%d\n"
+                               , error);
+       return (error<0)? error : ilen;
+}
+/*
+ *     main initialization loop: for each cipher in list, do
+ *     1) setup cryptoapi cipher else continue
+ *     2) register ipsec_alg object
+ */
+static int
+setup_cipher_list (struct ipsec_alg_capi_cipher* clist) 
+{
+       struct ipsec_alg_capi_cipher *cptr;
+       /* foreach cipher in list ... */
+       for (cptr=clist;cptr->ciphername;cptr++) {
+               /* 
+                * see if cipher has been disabled (0) or
+                * if noauto set and not enabled (1)
+                */
+               if (cptr->parm[0] == 0 || (noauto && cptr->parm[0] < 0)) {
+                       if (debug_crypto>0)
+                               printk(KERN_INFO "setup_cipher_list(): "
+                                       "ciphername=%s skipped at user request: "
+                                       "noauto=%d parm[0]=%d parm[1]=%d\n"
+                                       , cptr->ciphername
+                                       , noauto
+                                       , cptr->parm[0]
+                                       , cptr->parm[1]);
+                       continue;
+               }
+               /* 
+                *      use a local ci to avoid touching cptr->ci,
+                *      if register ipsec_alg success then bind cipher
+                */
+               if(cptr->alg.ixt_common.ixt_support.ias_name == NULL) {
+                 cptr->alg.ixt_common.ixt_support.ias_name = cptr->ciphername;
+               }
+
+               if( setup_cipher(cptr->ciphername) ) {
+                       if (debug_crypto > 0)
+                               printk(KERN_DEBUG "klips_debug:"
+                                               "setup_cipher_list():"
+                                               "ciphername=%s found\n"
+                               , cptr->ciphername);
+
+                       if (setup_ipsec_alg_capi_cipher(cptr) != 0) {
+                               printk(KERN_ERR "klips_debug:"
+                                      "setup_cipher_list():"
+                                      "ciphername=%s failed ipsec_alg_register\n"
+                                      , cptr->ciphername);
+                       }
+               } else {
+                       printk(KERN_INFO "KLIPS: lookup for ciphername=%s: not found \n",
+                              cptr->ciphername);
+               }
+       }
+       return 0;
+}
+/*
+ *     deregister ipsec_alg objects and unbind ciphers
+ */
+static int
+unsetup_cipher_list (struct ipsec_alg_capi_cipher* clist) 
+{
+       struct ipsec_alg_capi_cipher *cptr;
+       /* foreach cipher in list ... */
+       for (cptr=clist;cptr->ciphername;cptr++) {
+               if (cptr->alg.ixt_common.ixt_state & IPSEC_ALG_ST_REGISTERED) {
+                       unregister_ipsec_alg_enc(&cptr->alg);
+               }
+       }
+       return 0;
+}
+/*
+ *     test loop for registered algos
+ */
+static int
+test_cipher_list (struct ipsec_alg_capi_cipher* clist) 
+{
+       int test_ret;
+       struct ipsec_alg_capi_cipher *cptr;
+       /* foreach cipher in list ... */
+       for (cptr=clist;cptr->ciphername;cptr++) {
+               if (cptr->alg.ixt_common.ixt_state & IPSEC_ALG_ST_REGISTERED) {
+                       test_ret=ipsec_alg_test(
+                                       cptr->alg.ixt_common.ixt_support.ias_exttype,
+                                       cptr->alg.ixt_common.ixt_support.ias_id, 
+                                       test_crypto);
+                       printk("test_cipher_list(alg_type=%d alg_id=%d): test_ret=%d\n", 
+                              cptr->alg.ixt_common.ixt_support.ias_exttype, 
+                              cptr->alg.ixt_common.ixt_support.ias_id,
+                              test_ret);
+               }
+       }
+       return 0;
+}
+
+IPSEC_ALG_MODULE_INIT_STATIC( ipsec_cryptoapi_init )
+{
+       int ret, test_ret;
+       if ((ret=setup_cipher_list(alg_capi_carray)) < 0)
+               return  -EPROTONOSUPPORT;
+       if (ret==0 && test_crypto) {
+               test_ret=test_cipher_list(alg_capi_carray);
+       }
+       return ret;
+}
+IPSEC_ALG_MODULE_EXIT_STATIC( ipsec_cryptoapi_fini )
+{
+       unsetup_cipher_list(alg_capi_carray);
+       return;
+}
+#ifdef MODULE_LICENSE
+MODULE_LICENSE("GPL");
+#endif
+
+#endif /* NO_CRYPTOAPI_SUPPORT */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/ipsec_esp.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,615 @@
+/*
+ * processing code for ESP
+ * Copyright (C) 2003 Michael Richardson <mcr@sandelman.ottawa.on.ca>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+char ipsec_esp_c_version[] = "RCSID $Id: ipsec_esp.c,v 1.13.2.7 2007-09-05 02:56:09 paul Exp $";
+#ifndef AUTOCONF_INCLUDED
+#include <linux/config.h>
+#endif
+#include <linux/version.h>
+
+#define __NO_VERSION__
+#include <linux/module.h>
+#include <linux/kernel.h> /* printk() */
+
+#include "openswan/ipsec_param.h"
+
+#ifdef MALLOC_SLAB
+# include <linux/slab.h> /* kmalloc() */
+#else /* MALLOC_SLAB */
+# include <linux/malloc.h> /* kmalloc() */
+#endif /* MALLOC_SLAB */
+#include <linux/errno.h>  /* error codes */
+#include <linux/types.h>  /* size_t */
+#include <linux/interrupt.h> /* mark_bh */
+
+#include <linux/netdevice.h>   /* struct device, and other headers */
+#include <linux/etherdevice.h> /* eth_type_trans */
+#include <linux/ip.h>          /* struct iphdr */
+#include <linux/skbuff.h>
+#include <openswan.h>
+#ifdef SPINLOCK
+# ifdef SPINLOCK_23
+#  include <linux/spinlock.h> /* *lock* */
+# else /* SPINLOCK_23 */
+#  include <asm/spinlock.h> /* *lock* */
+# endif /* SPINLOCK_23 */
+#endif /* SPINLOCK */
+
+#include <net/ip.h>
+#include <net/protocol.h>
+
+#include "openswan/radij.h"
+#include "openswan/ipsec_encap.h"
+#include "openswan/ipsec_sa.h"
+
+#include "openswan/ipsec_radij.h"
+#include "openswan/ipsec_xform.h"
+#include "openswan/ipsec_tunnel.h"
+#include "openswan/ipsec_rcv.h"
+#include "openswan/ipsec_xmit.h"
+
+#include "openswan/ipsec_auth.h"
+
+#ifdef CONFIG_KLIPS_ESP
+#include "openswan/ipsec_esp.h"
+#endif /* CONFIG_KLIPS_ESP */
+
+#include "openswan/ipsec_proto.h"
+#include "openswan/ipsec_alg.h"
+
+#ifdef CONFIG_KLIPS_DEBUG
+#define ESP_DMP(_x,_y,_z) if(debug_rcv && sysctl_ipsec_debug_verbose) ipsec_dmp_block(_x,_y,_z)
+#else
+#define ESP_DMP(_x,_y,_z)
+#endif
+
+#ifdef CONFIG_KLIPS_ESP
+enum ipsec_rcv_value
+ipsec_rcv_esp_checks(struct ipsec_rcv_state *irs,
+                    struct sk_buff *skb)
+{
+       __u8 proto;
+       int len;        /* packet length */
+
+       len = skb->len;
+       proto = irs->ipp->protocol;
+
+       /* XXX this will need to be 8 for IPv6 */
+       if ((proto == IPPROTO_ESP) && ((len - irs->iphlen) % 4)) {
+               printk("klips_error:ipsec_rcv: "
+                      "got packet with content length = %d from %s -- should be on 4 octet boundary, packet dropped\n",
+                      len - irs->iphlen,
+                      irs->ipsaddr_txt);
+               if(irs->stats) {
+                       irs->stats->rx_errors++;
+               }
+               return IPSEC_RCV_BADLEN;
+       }
+
+       if(skb->len < (irs->hard_header_len + sizeof(struct iphdr) + sizeof(struct esphdr))) {
+               KLIPS_PRINT(debug_rcv & DB_RX_INAU,
+                           "klips_debug:ipsec_rcv: "
+                           "runt esp packet of skb->len=%d received from %s, dropped.\n",
+                           skb->len,
+                           irs->ipsaddr_txt);
+               if(irs->stats) {
+                       irs->stats->rx_errors++;
+               }
+               return IPSEC_RCV_BADLEN;
+       }
+
+       irs->protostuff.espstuff.espp = (struct esphdr *)skb_transport_header(skb);
+       irs->said.spi = irs->protostuff.espstuff.espp->esp_spi;
+
+       return IPSEC_RCV_OK;
+}
+
+enum ipsec_rcv_value
+ipsec_rcv_esp_decrypt_setup(struct ipsec_rcv_state *irs,
+                           struct sk_buff *skb,
+                           __u32          *replay,
+                           unsigned char **authenticator)
+{
+       struct esphdr *espp = irs->protostuff.espstuff.espp;
+       //unsigned char *idat = (unsigned char *)espp;
+
+       KLIPS_PRINT(debug_rcv,
+                   "klips_debug:ipsec_rcv: "
+                   "packet from %s received with seq=%d (iv)=0x%08x%08x iplen=%d esplen=%d sa=%s\n",
+                   irs->ipsaddr_txt,
+                   (__u32)ntohl(espp->esp_rpl),
+                   (__u32)ntohl(*((__u32 *)(espp->esp_iv)    )),
+                   (__u32)ntohl(*((__u32 *)(espp->esp_iv) + 1)),
+                   irs->len,
+                   irs->ilen,
+                   irs->sa_len ? irs->sa : " (error)");
+
+       *replay = ntohl(espp->esp_rpl);
+       *authenticator = &(skb_transport_header(skb)[irs->ilen]);
+
+       return IPSEC_RCV_OK;
+}
+
+enum ipsec_rcv_value
+ipsec_rcv_esp_authcalc(struct ipsec_rcv_state *irs,
+                      struct sk_buff *skb)
+{
+       struct auth_alg *aa;
+       struct esphdr *espp = irs->protostuff.espstuff.espp;
+       union {
+               MD5_CTX         md5;
+               SHA1_CTX        sha1;
+       } tctx;
+
+#ifdef CONFIG_KLIPS_ALG
+       if (irs->ipsp->ips_alg_auth) {
+               KLIPS_PRINT(debug_rcv,
+                               "klips_debug:ipsec_rcv: "
+                               "ipsec_alg hashing proto=%d... ",
+                               irs->said.proto);
+               if(irs->said.proto == IPPROTO_ESP) {
+                       ipsec_alg_sa_esp_hash(irs->ipsp,
+                                       (caddr_t)espp, irs->ilen,
+                                       irs->hash, AHHMAC_HASHLEN);
+                       return IPSEC_RCV_OK;
+               }
+               return IPSEC_RCV_BADPROTO;
+       }
+#endif
+       aa = irs->authfuncs;
+
+       /* copy the initialized keying material */
+       memcpy(&tctx, irs->ictx, irs->ictx_len);
+
+#ifdef HASH_DEBUG
+       ESP_DMP("ictx", irs->ictx, irs->ictx_len);
+
+       ESP_DMP("mac_esp", (caddr_t)espp, irs->ilen);
+#endif
+       (*aa->update)((void *)&tctx, (caddr_t)espp, irs->ilen);
+
+       (*aa->final)(irs->hash, (void *)&tctx);
+
+#ifdef HASH_DEBUG
+       ESP_DMP("hash1", irs->hash, aa->hashlen);
+#endif
+
+       memcpy(&tctx, irs->octx, irs->octx_len);
+
+#ifdef HASH_DEBUG
+       ESP_DMP("octx", irs->octx, irs->octx_len);
+#endif
+
+       (*aa->update)((void *)&tctx, irs->hash, aa->hashlen);
+       (*aa->final)(irs->hash, (void *)&tctx);
+
+       return IPSEC_RCV_OK;
+}
+
+
+enum ipsec_rcv_value
+ipsec_rcv_esp_decrypt(struct ipsec_rcv_state *irs)
+{
+       struct ipsec_sa *ipsp = irs->ipsp;
+       struct esphdr *espp = irs->protostuff.espstuff.espp;
+       int i;
+       int pad = 0, padlen;
+       int badpad = 0;
+       int esphlen = 0;
+       __u8 *idat;     /* pointer to content to be decrypted/authenticated */
+       int encaplen = 0;
+       struct sk_buff *skb;
+       struct ipsec_alg_enc *ixt_e=NULL;
+
+#ifdef CONFIG_KLIPS_ALG
+       skb=irs->skb;
+
+       idat = skb_transport_header(skb);
+
+       /* encaplen is the distance between the end of the IP
+        * header and the beginning of the ESP header.
+        * on ESP headers it is zero, but on UDP-encap ESP
+        * it includes the space for the UDP header.
+        *
+        * Note: UDP-encap code has already moved the
+        *       skb->data forward to accomodate this.
+        */
+       encaplen = skb_transport_header(skb) - (skb_network_header(skb) + irs->iphlen);
+
+       ixt_e=ipsp->ips_alg_enc;
+       esphlen = ESP_HEADER_LEN + ixt_e->ixt_common.ixt_support.ias_ivlen/8;
+       KLIPS_PRINT(debug_rcv,
+                   "klips_debug:ipsec_rcv: "
+                   "encalg=%d esphlen=%d\n",
+                   ipsp->ips_encalg, esphlen);
+
+       idat += esphlen;
+       irs->ilen -= esphlen;
+
+       if (ipsec_alg_esp_encrypt(ipsp, 
+                                 idat, irs->ilen, espp->esp_iv, 
+                                 IPSEC_ALG_DECRYPT) <= 0) {
+#ifdef CONFIG_KLIPS_DEBUG
+               KLIPS_ERROR(debug_rcv, "klips_error:ipsec_rcv: "
+                           "got packet with esplen = %d "
+                           "from %s -- should be on "
+                           "ENC(%d) octet boundary, "
+                           "packet dropped\n",
+                           irs->ilen,
+                           irs->ipsaddr_txt,
+                           ipsp->ips_encalg);
+#endif
+               if(irs->stats) {
+                       irs->stats->rx_errors++;
+               }
+               return IPSEC_RCV_BAD_DECRYPT;
+#endif /* CONFIG_KLIPS_ALG */
+       } 
+
+       ESP_DMP("postdecrypt", idat, irs->ilen);
+
+       irs->next_header = idat[irs->ilen - 1];
+       padlen = idat[irs->ilen - 2];
+       pad = padlen + 2 + irs->authlen;
+
+       KLIPS_PRINT(debug_rcv & DB_RX_IPAD,
+                   "klips_debug:ipsec_rcv: "
+                   "padlen=%d, contents: 0x<offset>: 0x<value> 0x<value> ...\n",
+                   padlen);
+
+       for (i = 1; i <= padlen; i++) {
+               if((i % 16) == 1) {
+                       KLIPS_PRINT(debug_rcv & DB_RX_IPAD,
+                                   "klips_debug:           %02x:",
+                                   i - 1);
+               }
+               KLIPS_PRINTMORE(debug_rcv & DB_RX_IPAD,
+                               " %02x",
+                               idat[irs->ilen - 2 - padlen + i - 1]);
+               if(i != idat[irs->ilen - 2 - padlen + i - 1]) {
+                       badpad = 1;
+               }
+               if((i % 16) == 0) {
+                       KLIPS_PRINTMORE(debug_rcv & DB_RX_IPAD,
+                                       "\n");
+               }
+       }
+       if((i % 16) != 1) {
+               KLIPS_PRINTMORE(debug_rcv & DB_RX_IPAD,
+                                               "\n");
+       }
+       if(badpad) {
+               KLIPS_PRINT(debug_rcv & DB_RX_IPAD,
+                           "klips_debug:ipsec_rcv: "
+                           "warning, decrypted packet from %s has bad padding\n",
+                           irs->ipsaddr_txt);
+               KLIPS_PRINT(debug_rcv & DB_RX_IPAD,
+                           "klips_debug:ipsec_rcv: "
+                           "...may be bad decryption -- not dropped\n");
+               ipsp->ips_errs.ips_encpad_errs += 1;
+       }
+
+       KLIPS_PRINT(debug_rcv & DB_RX_IPAD,
+                   "klips_debug:ipsec_rcv: "
+                   "packet decrypted from %s: next_header = %d, padding = %d\n",
+                   irs->ipsaddr_txt,
+                   irs->next_header,
+                   pad - 2 - irs->authlen);
+
+       irs->ipp->tot_len = htons(ntohs(irs->ipp->tot_len) - (esphlen + pad));
+
+       /*
+        * move the IP header forward by the size of the ESP header, which
+        * will remove the the ESP header from the packet.
+        *
+        * XXX this is really unnecessary, since odds we are in tunnel
+        *     mode, and we will be *removing* this IP header.
+        *
+        */
+       memmove((void *)(idat - irs->iphlen),
+               (void *)(skb_network_header(skb)), irs->iphlen);
+
+       ESP_DMP("esp postmove", (idat - irs->iphlen),
+               irs->iphlen + irs->ilen);
+
+       /* skb_pull below, will move up by esphlen */
+
+       /* XXX not clear how this can happen, as the message indicates */
+       if(skb->len < esphlen) {
+               printk(KERN_WARNING
+                      "klips_error:ipsec_rcv: "
+                      "tried to skb_pull esphlen=%d, %d available.  This should never happen, please report.\n",
+                      esphlen, (int)(skb->len));
+               return IPSEC_RCV_ESP_DECAPFAIL;
+       }
+       skb_pull(skb, esphlen);
+       skb_set_network_header(skb, ipsec_skb_offset(skb, idat - irs->iphlen));
+       irs->ipp = ip_hdr(skb);
+
+       ESP_DMP("esp postpull", skb->data, skb->len);
+
+       /* now, trip off the padding from the end */
+       KLIPS_PRINT(debug_rcv & DB_RX_PKTRX,
+                   "klips_debug:ipsec_rcv: "
+                   "trimming to %d.\n",
+                   irs->len - esphlen - pad);
+       if(pad + esphlen <= irs->len) {
+               skb_trim(skb, irs->len - esphlen - pad);
+       } else {
+               KLIPS_PRINT(debug_rcv & DB_RX_PKTRX,
+                           "klips_debug:ipsec_rcv: "
+                           "bogus packet, size is zero or negative, dropping.\n");
+               return IPSEC_RCV_DECAPFAIL;
+       }
+
+       return IPSEC_RCV_OK;
+}
+
+/*
+ *
+ */
+enum ipsec_xmit_value
+ipsec_xmit_esp_setup(struct ipsec_xmit_state *ixs)
+{
+#ifdef CONFIG_KLIPS_ENC_3DES
+  __u32 iv[2];
+#endif
+  struct esphdr *espp;
+  int ilen = 0;
+  int padlen = 0, i;
+  unsigned char *dat;
+  unsigned char *idat, *pad;
+  __u8 hash[AH_AMAX];
+  union {
+#ifdef CONFIG_KLIPS_AUTH_HMAC_MD5
+    MD5_CTX md5;
+#endif /* CONFIG_KLIPS_AUTH_HMAC_MD5 */
+#ifdef CONFIG_KLIPS_AUTH_HMAC_SHA1
+    SHA1_CTX sha1;
+#endif /* CONFIG_KLIPS_AUTH_HMAC_SHA1 */
+  } tctx;
+
+  dat = (unsigned char *)ixs->iph;
+
+  espp = (struct esphdr *)(dat + ixs->iphlen);
+  espp->esp_spi = ixs->ipsp->ips_said.spi;
+  espp->esp_rpl = htonl(++(ixs->ipsp->ips_replaywin_lastseq));
+  
+  switch(ixs->ipsp->ips_encalg) {
+#if defined(CONFIG_KLIPS_ENC_3DES)
+#ifdef CONFIG_KLIPS_ENC_3DES
+  case ESP_3DES:
+#endif /* CONFIG_KLIPS_ENC_3DES */
+    iv[0] = *((__u32*)&(espp->esp_iv)    ) =
+      ((__u32*)(ixs->ipsp->ips_iv))[0];
+    iv[1] = *((__u32*)&(espp->esp_iv) + 1) =
+      ((__u32*)(ixs->ipsp->ips_iv))[1];
+    break;
+#endif /* defined(CONFIG_KLIPS_ENC_3DES) */
+  default:
+    ixs->stats->tx_errors++;
+    return IPSEC_XMIT_ESP_BADALG;
+  }
+               
+  idat = dat + ixs->iphlen + sizeof(struct esphdr);
+  ilen = ixs->skb->len - (ixs->iphlen + sizeof(struct esphdr) + ixs->authlen);
+  
+  /* Self-describing padding */
+  pad = &dat[ixs->skb->len - ixs->tailroom];
+  padlen = ixs->tailroom - 2 - ixs->authlen;
+  for (i = 0; i < padlen; i++) {
+    pad[i] = i + 1; 
+  }
+  dat[ixs->skb->len - ixs->authlen - 2] = padlen;
+  
+  dat[ixs->skb->len - ixs->authlen - 1] = ixs->iph->protocol;
+  ixs->iph->protocol = IPPROTO_ESP;
+  
+  switch(ixs->ipsp->ips_encalg) {
+#ifdef CONFIG_KLIPS_ENC_3DES
+  case ESP_3DES:
+    des_ede3_cbc_encrypt((des_cblock *)idat,
+                        (des_cblock *)idat,
+                        ilen,
+                        ((struct des_eks *)(ixs->ipsp->ips_key_e))[0].ks,
+                        ((struct des_eks *)(ixs->ipsp->ips_key_e))[1].ks,
+                        ((struct des_eks *)(ixs->ipsp->ips_key_e))[2].ks,
+                        (des_cblock *)iv, 1);
+    break;
+#endif /* CONFIG_KLIPS_ENC_3DES */
+  default:
+    ixs->stats->tx_errors++;
+    return IPSEC_XMIT_ESP_BADALG;
+  }
+  
+  switch(ixs->ipsp->ips_encalg) {
+#if defined(CONFIG_KLIPS_ENC_3DES)
+#ifdef CONFIG_KLIPS_ENC_3DES
+  case ESP_3DES:
+#endif /* CONFIG_KLIPS_ENC_3DES */
+    /* XXX update IV with the last 8 octets of the encryption */
+#if KLIPS_IMPAIRMENT_ESPIV_CBC_ATTACK
+    ((__u32*)(ixs->ipsp->ips_iv))[0] =
+      ((__u32 *)(idat))[(ilen >> 2) - 2];
+    ((__u32*)(ixs->ipsp->ips_iv))[1] =
+      ((__u32 *)(idat))[(ilen >> 2) - 1];
+#else /* KLIPS_IMPAIRMENT_ESPIV_CBC_ATTACK */
+    prng_bytes(&ipsec_prng, (char *)ixs->ipsp->ips_iv, EMT_ESPDES_IV_SZ); 
+#endif /* KLIPS_IMPAIRMENT_ESPIV_CBC_ATTACK */
+    break;
+#endif /* defined(CONFIG_KLIPS_ENC_3DES) */
+  default:
+    ixs->stats->tx_errors++;
+    return IPSEC_XMIT_ESP_BADALG;
+  }
+  
+  switch(ixs->ipsp->ips_authalg) {
+#ifdef CONFIG_KLIPS_AUTH_HMAC_MD5
+  case AH_MD5:
+    ipsec_xmit_dmp("espp", (char*)espp, ixs->skb->len - ixs->iphlen - ixs->authlen);
+    tctx.md5 = ((struct md5_ctx*)(ixs->ipsp->ips_key_a))->ictx;
+    ipsec_xmit_dmp("ictx", (char*)&tctx.md5, sizeof(tctx.md5));
+    osMD5Update(&tctx.md5, (caddr_t)espp, ixs->skb->len - ixs->iphlen - ixs->authlen);
+    ipsec_xmit_dmp("ictx+dat", (char*)&tctx.md5, sizeof(tctx.md5));
+    osMD5Final(hash, &tctx.md5);
+    ipsec_xmit_dmp("ictx hash", (char*)&hash, sizeof(hash));
+    tctx.md5 = ((struct md5_ctx*)(ixs->ipsp->ips_key_a))->octx;
+    ipsec_xmit_dmp("octx", (char*)&tctx.md5, sizeof(tctx.md5));
+    osMD5Update(&tctx.md5, hash, AHMD596_ALEN);
+    ipsec_xmit_dmp("octx+hash", (char*)&tctx.md5, sizeof(tctx.md5));
+    osMD5Final(hash, &tctx.md5);
+    ipsec_xmit_dmp("octx hash", (char*)&hash, sizeof(hash));
+    memcpy(&(dat[ixs->skb->len - ixs->authlen]), hash, ixs->authlen);
+    
+    /* paranoid */
+    memset((caddr_t)&tctx.md5, 0, sizeof(tctx.md5));
+    memset((caddr_t)hash, 0, sizeof(*hash));
+    break;
+#endif /* CONFIG_KLIPS_AUTH_HMAC_MD5 */
+#ifdef CONFIG_KLIPS_AUTH_HMAC_SHA1
+  case AH_SHA:
+    tctx.sha1 = ((struct sha1_ctx*)(ixs->ipsp->ips_key_a))->ictx;
+    SHA1Update(&tctx.sha1, (caddr_t)espp, ixs->skb->len - ixs->iphlen - ixs->authlen);
+    SHA1Final(hash, &tctx.sha1);
+    tctx.sha1 = ((struct sha1_ctx*)(ixs->ipsp->ips_key_a))->octx;
+    SHA1Update(&tctx.sha1, hash, AHSHA196_ALEN);
+    SHA1Final(hash, &tctx.sha1);
+    memcpy(&(dat[ixs->skb->len - ixs->authlen]), hash, ixs->authlen);
+    
+    /* paranoid */
+    memset((caddr_t)&tctx.sha1, 0, sizeof(tctx.sha1));
+    memset((caddr_t)hash, 0, sizeof(*hash));
+    break;
+#endif /* CONFIG_KLIPS_AUTH_HMAC_SHA1 */
+  case AH_NONE:
+    break;
+  default:
+    ixs->stats->tx_errors++;
+    return IPSEC_XMIT_AH_BADALG;
+  }
+
+  skb_set_transport_header(ixs->skb, ipsec_skb_offset(ixs->skb, espp));
+
+  return IPSEC_XMIT_OK;
+}
+
+
+struct xform_functions esp_xform_funcs[]={
+       {       rcv_checks:         ipsec_rcv_esp_checks,
+               rcv_setup_auth:     ipsec_rcv_esp_decrypt_setup,
+               rcv_calc_auth:      ipsec_rcv_esp_authcalc,
+               rcv_decrypt:        ipsec_rcv_esp_decrypt,
+
+               xmit_setup:         ipsec_xmit_esp_setup,
+               xmit_headroom:      sizeof(struct esphdr),
+               xmit_needtailroom:  1,
+       },
+};
+
+#ifdef NET_26
+struct inet_protocol esp_protocol = {
+  .handler = ipsec_rcv,
+  .no_policy = 1,
+};
+#else
+struct inet_protocol esp_protocol =
+{
+       ipsec_rcv,                      /* ESP handler          */
+       NULL,                           /* TUNNEL error control */
+#ifdef NETDEV_25
+       1,                              /* no policy */
+#else
+       0,                              /* next */
+       IPPROTO_ESP,                    /* protocol ID */
+       0,                              /* copy */
+       NULL,                           /* data */
+       "ESP"                           /* name */
+#endif
+};
+#endif /* NET_26 */
+
+#endif /* !CONFIG_KLIPS_ESP */
+
+
+/*
+ * $Log: ipsec_esp.c,v $
+ * Revision 1.13.2.7  2007-09-05 02:56:09  paul
+ * Use the new ipsec_kversion macros by David to deal with 2.6.22 kernels.
+ * Fixes based on David McCullough patch.
+ *
+ * Revision 1.13.2.6  2006/10/06 21:39:26  paul
+ * Fix for 2.6.18+ only include linux/config.h if AUTOCONF_INCLUDED is not
+ * set. This is defined through autoconf.h which is included through the
+ * linux kernel build macros.
+ *
+ * Revision 1.13.2.5  2006/08/24 03:02:01  paul
+ * Compile fixes for when CONFIG_KLIPS_DEBUG is not set. (bug #642)
+ *
+ * Revision 1.13.2.4  2006/05/06 03:07:38  ken
+ * Pull in proper padsize->tailroom fix from #public
+ * Need to do correct math on padlen since padsize is not equal to tailroom
+ *
+ * Revision 1.13.2.3  2006/05/05 03:58:04  ken
+ * ixs->padsize becomes ixs->tailroom
+ *
+ * Revision 1.13.2.2  2006/05/01 14:36:03  mcr
+ * use KLIPS_ERROR for fatal things.
+ *
+ * Revision 1.13.2.1  2006/04/20 16:33:06  mcr
+ * remove all of CONFIG_KLIPS_ALG --- one can no longer build without it.
+ * Fix in-kernel module compilation. Sub-makefiles do not work.
+ *
+ * Revision 1.13  2005/05/21 03:19:57  mcr
+ *     hash ctx is not really that interesting most of the time.
+ *
+ * Revision 1.12  2005/05/11 01:28:49  mcr
+ *     removed "poor-man"s OOP in favour of proper C structures.
+ *
+ * Revision 1.11  2005/04/29 05:10:22  mcr
+ *     removed from extraenous includes to make unit testing easier.
+ *
+ * Revision 1.10  2005/04/17 04:36:14  mcr
+ *     code now deals with ESP and UDP-ESP code.
+ *
+ * Revision 1.9  2005/04/15 19:52:30  mcr
+ *     adjustments to use proper skb fields for data.
+ *
+ * Revision 1.8  2004/09/14 00:22:57  mcr
+ *     adjustment of MD5* functions.
+ *
+ * Revision 1.7  2004/09/13 02:23:01  mcr
+ *     #define inet_protocol if necessary.
+ *
+ * Revision 1.6  2004/09/06 18:35:49  mcr
+ *     2.6.8.1 gets rid of inet_protocol->net_protocol compatibility,
+ *     so adjust for that.
+ *
+ * Revision 1.5  2004/08/17 03:27:23  mcr
+ *     klips 2.6 edits.
+ *
+ * Revision 1.4  2004/08/04 15:57:07  mcr
+ *     moved des .h files to include/des/ *
+ *     included 2.6 protocol specific things
+ *     started at NAT-T support, but it will require a kernel patch.
+ *
+ * Revision 1.3  2004/07/10 19:11:18  mcr
+ *     CONFIG_IPSEC -> CONFIG_KLIPS.
+ *
+ * Revision 1.2  2004/04/06 02:49:25  mcr
+ *     pullup of algo code from alg-branch.
+ *
+ *
+ *
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/ipsec_init.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,641 @@
+/*
+ * @(#) Initialization code.
+ * Copyright (C) 1996, 1997   John Ioannidis.
+ * Copyright (C) 1998 - 2002  Richard Guy Briggs <rgb@freeswan.org>
+ *               2001 - 2004  Michael Richardson <mcr@xelerance.com>
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * /proc system code was split out into ipsec_proc.c after rev. 1.70.
+ *
+ */
+
+char ipsec_init_c_version[] = "RCSID $Id: ipsec_init.c,v 1.104.2.6 2007-11-16 03:31:52 paul Exp $";
+
+#ifndef AUTOCONF_INCLUDED
+#include <linux/config.h>
+#endif
+#include <linux/version.h>
+#include <linux/module.h>
+#include <linux/kernel.h> /* printk() */
+
+#include "openswan/ipsec_param.h"
+
+#ifdef MALLOC_SLAB
+# include <linux/slab.h> /* kmalloc() */
+#else /* MALLOC_SLAB */
+# include <linux/malloc.h> /* kmalloc() */
+#endif /* MALLOC_SLAB */
+#include <linux/errno.h>  /* error codes */
+#include <linux/types.h>  /* size_t */
+#include <linux/interrupt.h> /* mark_bh */
+
+#include <linux/netdevice.h>   /* struct device, and other headers */
+#include <linux/etherdevice.h> /* eth_type_trans */
+#include <linux/ip.h>          /* struct iphdr */
+#include <linux/in.h>          /* struct sockaddr_in */
+#include <linux/skbuff.h>
+#include <linux/random.h>       /* get_random_bytes() */
+#include <net/protocol.h>
+
+#include <openswan.h>
+
+#ifdef SPINLOCK
+# ifdef SPINLOCK_23
+#  include <linux/spinlock.h> /* *lock* */
+# else /* 23_SPINLOCK */
+#  include <asm/spinlock.h> /* *lock* */
+# endif /* 23_SPINLOCK */
+#endif /* SPINLOCK */
+
+#include <net/ip.h>
+
+#ifdef CONFIG_PROC_FS
+# include <linux/proc_fs.h>
+#endif /* CONFIG_PROC_FS */
+
+#ifdef NETLINK_SOCK
+# include <linux/netlink.h>
+#else
+# include <net/netlink.h>
+#endif
+
+#include "openswan/radij.h"
+
+#include "openswan/ipsec_life.h"
+#include "openswan/ipsec_stats.h"
+#include "openswan/ipsec_sa.h"
+
+#include "openswan/ipsec_encap.h"
+#include "openswan/ipsec_radij.h"
+#include "openswan/ipsec_xform.h"
+#include "openswan/ipsec_tunnel.h"
+
+#include "openswan/ipsec_rcv.h"
+#include "openswan/ipsec_xmit.h"
+#include "openswan/ipsec_ah.h"
+#include "openswan/ipsec_esp.h"
+
+#ifdef CONFIG_KLIPS_IPCOMP
+# include "openswan/ipcomp.h"
+#endif /* CONFIG_KLIPS_IPCOMP */
+
+#include "openswan/ipsec_proto.h"
+#include "openswan/ipsec_alg.h"
+
+#include <pfkeyv2.h>
+#include <pfkey.h>
+
+#if defined(NET_26) && defined(CONFIG_IPSEC_NAT_TRAVERSAL)
+#include <net/xfrmudp.h>
+#endif
+
+#if defined(NET_26) && defined(CONFIG_IPSEC_NAT_TRAVERSAL) && !defined(HAVE_XFRM4_UDP_REGISTER)
+#warning "You are trying to build KLIPS2.6 with NAT-T support, but you did not"
+#error   "properly apply the NAT-T patch to your 2.6 kernel source tree."
+#endif
+
+#if !defined(CONFIG_KLIPS_ESP) && !defined(CONFIG_KLIPS_AH)
+#error "kernel configuration must include ESP or AH"
+#endif
+
+/*
+ * seems to be present in 2.4.10 (Linus), but also in some RH and other
+ * distro kernels of a lower number.
+ */
+#ifdef MODULE_LICENSE
+MODULE_LICENSE("GPL");
+#endif
+
+#ifdef CONFIG_KLIPS_DEBUG
+int debug_eroute = 0;
+int debug_spi = 0;
+int debug_netlink = 0;
+#endif /* CONFIG_KLIPS_DEBUG */
+
+struct prng ipsec_prng;
+
+
+#if defined(NET_26) && defined(CONFIG_IPSEC_NAT_TRAVERSAL)
+xfrm4_rcv_encap_t klips_old_encap = NULL;
+#endif
+
+extern int ipsec_device_event(struct notifier_block *dnot, unsigned long event, void *ptr);
+/*
+ * the following structure is required so that we receive
+ * event notifications when network devices are enabled and
+ * disabled (ifconfig up and down).
+ */
+static struct notifier_block ipsec_dev_notifier={
+       ipsec_device_event,
+       NULL,
+       0
+};
+
+#ifdef CONFIG_SYSCTL
+extern int ipsec_sysctl_register(void);
+extern void ipsec_sysctl_unregister(void);
+#endif
+
+/*
+ * inet_*_protocol returns void on 2.4.x, int on 2.6.x
+ * So we need our own wrapper
+ */
+#if defined(NET_26) || defined(IPSKB_XFRM_TUNNEL_SIZE)
+static inline int
+openswan_inet_add_protocol(struct inet_protocol *prot, unsigned protocol,char *protstr)
+{
+       int err = inet_add_protocol(prot, protocol);
+       if (err)
+               printk(KERN_ERR "KLIPS: can not register %s protocol - recompile with CONFIG_INET_%s disabled or as module\n", protstr,protstr);
+       return err;
+
+}
+
+static inline int
+openswan_inet_del_protocol(struct inet_protocol *prot, unsigned protocol)
+{
+       return inet_del_protocol(prot, protocol);
+}
+
+#else
+static inline int
+openswan_inet_add_protocol(struct inet_protocol *prot, unsigned protocol, char *protstr)
+{
+       inet_add_protocol(prot);
+       return 0;
+}
+
+static inline int
+openswan_inet_del_protocol(struct inet_protocol *prot, unsigned protocol)
+{
+       inet_del_protocol(prot);
+       return 0;
+}
+
+#endif
+
+/* void */
+int
+ipsec_klips_init(void)
+{
+       int error = 0;
+       unsigned char seed[256];
+#ifdef CONFIG_KLIPS_ENC_3DES
+       extern int des_check_key;
+
+       /* turn off checking of keys */
+       des_check_key=0;
+#endif /* CONFIG_KLIPS_ENC_3DES */
+
+       KLIPS_PRINT(1, "klips_info:ipsec_init: "
+                   "KLIPS startup, Openswan KLIPS IPsec stack version: %s\n",
+                   ipsec_version_code());
+
+       error |= ipsec_proc_init();
+
+#ifdef SPINLOCK
+       ipsec_sadb.sadb_lock = SPIN_LOCK_UNLOCKED;
+#else /* SPINLOCK */
+       ipsec_sadb.sadb_lock = 0;
+#endif /* SPINLOCK */
+
+#ifndef SPINLOCK
+       tdb_lock.lock = 0;
+       eroute_lock.lock = 0;
+#endif /* !SPINLOCK */
+
+       error |= ipsec_sadb_init();
+       error |= ipsec_radijinit();
+
+       error |= pfkey_init();
+
+       error |= register_netdevice_notifier(&ipsec_dev_notifier);
+
+#ifdef CONFIG_KLIPS_ESP
+       error |= openswan_inet_add_protocol(&esp_protocol, IPPROTO_ESP,"ESP");
+#endif /* CONFIG_KLIPS_ESP */
+
+#ifdef CONFIG_KLIPS_AH
+       error |= openswan_inet_add_protocol(&ah_protocol, IPPROTO_AH,"AH");
+#endif /* CONFIG_KLIPS_AH */
+
+/* we never actually link IPCOMP to the stack */
+#ifdef IPCOMP_USED_ALONE
+#ifdef CONFIG_KLIPS_IPCOMP
+       error |= openswan_inet_add_protocol(&comp_protocol, IPPROTO_COMP,"IPCOMP");
+#endif /* CONFIG_KLIPS_IPCOMP */
+#endif
+
+       error |= ipsec_tunnel_init_devices();
+
+#if defined(NET_26) && defined(CONFIG_IPSEC_NAT_TRAVERSAL)
+       /* register our ESP-UDP handler */
+       if(udp4_register_esp_rcvencap(klips26_rcv_encap
+                                     , &klips_old_encap)!=0) {
+          printk(KERN_ERR "KLIPS: can not register klips_rcv_encap function\n");
+       }
+#endif 
+
+
+#ifdef CONFIG_SYSCTL
+        error |= ipsec_sysctl_register();
+#endif                                                                          
+
+#ifdef CONFIG_KLIPS_ALG
+       ipsec_alg_init();
+#endif
+
+       get_random_bytes((void *)seed, sizeof(seed));
+       prng_init(&ipsec_prng, seed, sizeof(seed));
+
+       return error;
+}      
+
+
+/* void */
+int
+ipsec_cleanup(void)
+{
+       int error = 0;
+
+#ifdef CONFIG_SYSCTL
+        ipsec_sysctl_unregister();
+#endif                                                                          
+#if defined(NET_26) && defined(CONFIG_IPSEC_NAT_TRAVERSAL)
+       if(udp4_unregister_esp_rcvencap(klips_old_encap) < 0) {
+               printk(KERN_ERR "KLIPS: can not unregister klips_rcv_encap function\n");
+       }
+#endif
+
+       KLIPS_PRINT(debug_netlink, /* debug_tunnel & DB_TN_INIT, */
+                   "klips_debug:ipsec_cleanup: "
+                   "calling ipsec_tunnel_cleanup_devices.\n");
+       error |= ipsec_tunnel_cleanup_devices();
+
+       KLIPS_PRINT(debug_netlink, "called ipsec_tunnel_cleanup_devices");
+
+/* we never actually link IPCOMP to the stack */
+#ifdef IPCOMP_USED_ALONE
+#ifdef CONFIG_KLIPS_IPCOMP
+       if (openswan_inet_del_protocol(&comp_protocol, IPPROTO_COMP) < 0)
+               printk(KERN_INFO "klips_debug:ipsec_cleanup: "
+                      "comp close: can't remove protocol\n");
+#endif /* CONFIG_KLIPS_IPCOMP */
+#endif /* IPCOMP_USED_ALONE */
+
+#ifdef CONFIG_KLIPS_AH
+       if (openswan_inet_del_protocol(&ah_protocol, IPPROTO_AH) < 0)
+               printk(KERN_INFO "klips_debug:ipsec_cleanup: "
+                      "ah close: can't remove protocol\n");
+#endif /* CONFIG_KLIPS_AH */
+
+#ifdef CONFIG_KLIPS_ESP
+       if (openswan_inet_del_protocol(&esp_protocol, IPPROTO_ESP) < 0)
+               printk(KERN_INFO "klips_debug:ipsec_cleanup: "
+                      "esp close: can't remove protocol\n");
+#endif /* CONFIG_KLIPS_ESP */
+
+       error |= unregister_netdevice_notifier(&ipsec_dev_notifier);
+
+       KLIPS_PRINT(debug_netlink, /* debug_tunnel & DB_TN_INIT, */
+                   "klips_debug:ipsec_cleanup: "
+                   "calling ipsec_sadb_cleanup.\n");
+       error |= ipsec_sadb_cleanup(0);
+       error |= ipsec_sadb_free();
+
+       KLIPS_PRINT(debug_netlink, /* debug_tunnel & DB_TN_INIT, */
+                   "klips_debug:ipsec_cleanup: "
+                   "calling ipsec_radijcleanup.\n");
+       error |= ipsec_radijcleanup();
+       
+       KLIPS_PRINT(debug_pfkey, /* debug_tunnel & DB_TN_INIT, */
+                   "klips_debug:ipsec_cleanup: "
+                   "calling pfkey_cleanup.\n");
+       error |= pfkey_cleanup();
+
+       ipsec_proc_cleanup();
+
+       prng_final(&ipsec_prng);
+
+       return error;
+}
+
+#ifdef MODULE
+int
+init_module(void)
+{
+       int error = 0;
+
+       error |= ipsec_klips_init();
+       /*if (error)
+               ipsec_cleanup();
+       */
+       return error;
+}
+
+void
+cleanup_module(void)
+{
+       KLIPS_PRINT(debug_netlink, /* debug_tunnel & DB_TN_INIT, */
+                   "klips_debug:cleanup_module: "
+                   "calling ipsec_cleanup.\n");
+
+       ipsec_cleanup();
+
+       KLIPS_PRINT(1, "klips_info:cleanup_module: "
+                   "ipsec module unloaded.\n");
+}
+#endif /* MODULE */
+
+/*
+ * $Log: ipsec_init.c,v $
+ * Revision 1.104.2.6  2007-11-16 03:31:52  paul
+ * Added log message to openswan_inet_add_protocol() if we fail to register
+ * our protocol with KLIPS (eg ESP because esp4 module is already loaded).
+ * We didnt notice this failure before. We now return a proper error, but
+ *
+ * TODO:
+ *
+ * we still need to do a beter cleanup, as we're leaving files in /proc.
+ * (calling cleanup_module() from init_module() if we see an error caused
+ *  its own kernel oopses).
+ *
+ * Revision 1.104.2.5  2007/09/05 02:36:57  paul
+ * include ipsec_init.h. Added an ifdef. Patch by David McCullough
+ *
+ * Revision 1.104.2.4  2006/10/06 21:39:26  paul
+ * Fix for 2.6.18+ only include linux/config.h if AUTOCONF_INCLUDED is not
+ * set. This is defined through autoconf.h which is included through the
+ * linux kernel build macros.
+ *
+ * Revision 1.104.2.3  2006/07/31 15:25:20  paul
+ * Check for NETKEY backport in Debian using IPSKB_XFRM_TUNNEL_SIZE to
+ * determine wether inet_add_protocol needs the protocol argument.
+ *
+ * Revision 1.104.2.2  2006/04/20 16:33:06  mcr
+ * remove all of CONFIG_KLIPS_ALG --- one can no longer build without it.
+ * Fix in-kernel module compilation. Sub-makefiles do not work.
+ *
+ * Revision 1.104.2.1  2005/08/12 01:18:20  ken
+ * Warn people who don't have NAT-T patch applied, but try and compile NAT-T code
+ *
+ * Revision 1.105  2005/08/12 00:56:33  mcr
+ *     add warning for people who didn't apply nat-t patch.
+ *
+ * Revision 1.104  2005/07/08 15:51:41  mcr
+ *     removed duplicate NAT-T code.
+ *     if CONFIG_IPSEC_NAT_TRAVERSAL isn't defined, then there is no issue.
+ *
+ * Revision 1.103  2005/07/08 03:02:05  paul
+ * Fixed garbled define that accidentally got commited to the real tree.
+ *
+ * Revision 1.102  2005/07/08 02:56:37  paul
+ * gcc4 fixes that were not commited because vault was down
+ *
+ * Revision 1.101  2005/04/29 05:10:22  mcr
+ *     removed from extraenous includes to make unit testing easier.
+ *
+ * Revision 1.100  2005/04/10 22:56:09  mcr
+ *     change to udp.c registration API.
+ *
+ * Revision 1.99  2005/04/08 18:26:13  mcr
+ *     register with udp.c, the klips26 encap receive function
+ *
+ * Revision 1.98  2004/09/13 02:23:18  mcr
+ *     #define inet_protocol if necessary.
+ *
+ * Revision 1.97  2004/09/06 18:35:49  mcr
+ *     2.6.8.1 gets rid of inet_protocol->net_protocol compatibility,
+ *     so adjust for that.
+ *
+ * Revision 1.96  2004/08/17 03:27:23  mcr
+ *     klips 2.6 edits.
+ *
+ * Revision 1.95  2004/08/03 18:19:08  mcr
+ *     in 2.6, use "net_device" instead of #define device->net_device.
+ *     this probably breaks 2.0 compiles.
+ *
+ * Revision 1.94  2004/07/10 19:11:18  mcr
+ *     CONFIG_IPSEC -> CONFIG_KLIPS.
+ *
+ * Revision 1.93  2004/04/06 02:49:26  mcr
+ *     pullup of algo code from alg-branch.
+ *
+ * Revision 1.92  2004/03/30 15:30:39  ken
+ * Proper Capitalization
+ *
+ * Revision 1.91  2004/03/22 01:51:51  ken
+ * We are open
+ *
+ * Revision 1.90.4.2  2004/04/05 04:30:46  mcr
+ *     patches for alg-branch to compile/work with 2.x openswan
+ *
+ * Revision 1.90.4.1  2003/12/22 15:25:52  jjo
+ *      Merged algo-0.8.1-rc11-test1 into alg-branch
+ *
+ * Revision 1.90  2003/10/31 02:27:55  mcr
+ *     pulled up port-selector patches and sa_id elimination.
+ *
+ * Revision 1.89.4.1  2003/10/29 01:30:41  mcr
+ *     elimited "struct sa_id".
+ *
+ * Revision 1.89  2003/07/31 22:47:16  mcr
+ *     preliminary (untested by FS-team) 2.5 patches.
+ *
+ * Revision 1.88  2003/06/22 20:05:36  mcr
+ *     clarified why IPCOMP was not being registered, and put a new
+ *     #ifdef in rather than #if 0.
+ *
+ * Revision 1.87  2002/09/20 15:40:51  rgb
+ * Added a lock to the global ipsec_sadb struct for future use.
+ * Split ipsec_sadb_cleanup from new funciton ipsec_sadb_free to avoid problem
+ * of freeing newly created structures when clearing the reftable upon startup
+ * to start from a known state.
+ *
+ * Revision 1.86  2002/08/15 18:39:15  rgb
+ * Move ipsec_prng outside debug code.
+ *
+ * Revision 1.85  2002/05/14 02:35:29  rgb
+ * Change reference to tdb to ipsa.
+ *
+ * Revision 1.84  2002/04/24 07:55:32  mcr
+ *     #include patches and Makefiles for post-reorg compilation.
+ *
+ * Revision 1.83  2002/04/24 07:36:28  mcr
+ * Moved from ./klips/net/ipsec/ipsec_init.c,v
+ *
+ * Revision 1.82  2002/04/20 00:12:25  rgb
+ * Added esp IV CBC attack fix, disabled.
+ *
+ * Revision 1.81  2002/04/09 16:13:32  mcr
+ *     switch license to straight GPL.
+ *
+ * Revision 1.80  2002/03/24 07:34:08  rgb
+ * Sanity check for at least one of AH or ESP configured.
+ *
+ * Revision 1.79  2002/02/05 22:55:15  mcr
+ *     added MODULE_LICENSE declaration.
+ *     This macro does not appear in all kernel versions (see comment).
+ *
+ * Revision 1.78  2002/01/29 17:17:55  mcr
+ *     moved include of ipsec_param.h to after include of linux/kernel.h
+ *     otherwise, it seems that some option that is set in ipsec_param.h
+ *     screws up something subtle in the include path to kernel.h, and
+ *     it complains on the snprintf() prototype.
+ *
+ * Revision 1.77  2002/01/29 04:00:51  mcr
+ *     more excise of kversions.h header.
+ *
+ * Revision 1.76  2002/01/29 02:13:17  mcr
+ *     introduction of ipsec_kversion.h means that include of
+ *     ipsec_param.h must preceed any decisions about what files to
+ *     include to deal with differences in kernel source.
+ *
+ * Revision 1.75  2001/11/26 09:23:48  rgb
+ * Merge MCR's ipsec_sa, eroute, proc and struct lifetime changes.
+ *
+ * Revision 1.74  2001/11/22 05:44:11  henry
+ * new version stuff
+ *
+ * Revision 1.71.2.2  2001/10/22 20:51:00  mcr
+ *     explicitely set des_check_key.
+ *
+ * Revision 1.71.2.1  2001/09/25 02:19:39  mcr
+ *     /proc manipulation code moved to new ipsec_proc.c
+ *
+ * Revision 1.73  2001/11/06 19:47:17  rgb
+ * Changed lifetime_packets to uint32 from uint64.
+ *
+ * Revision 1.72  2001/10/18 04:45:19  rgb
+ * 2.4.9 kernel deprecates linux/malloc.h in favour of linux/slab.h,
+ * lib/freeswan.h version macros moved to lib/kversions.h.
+ * Other compiler directive cleanups.
+ *
+ * Revision 1.71  2001/09/20 15:32:45  rgb
+ * Minor pfkey lifetime fixes.
+ *
+ * Revision 1.70  2001/07/06 19:51:21  rgb
+ * Added inbound policy checking code for IPIP SAs.
+ *
+ * Revision 1.69  2001/06/14 19:33:26  rgb
+ * Silence startup message for console, but allow it to be logged.
+ * Update copyright date.
+ *
+ * Revision 1.68  2001/05/29 05:14:36  rgb
+ * Added PMTU to /proc/net/ipsec_tncfg output.  See 'man 5 ipsec_tncfg'.
+ *
+ * Revision 1.67  2001/05/04 16:34:52  rgb
+ * Rremove erroneous checking of return codes for proc_net_* in 2.4.
+ *
+ * Revision 1.66  2001/05/03 19:40:34  rgb
+ * Check error return codes in startup and shutdown.
+ *
+ * Revision 1.65  2001/02/28 05:03:27  rgb
+ * Clean up and rationalise startup messages.
+ *
+ * Revision 1.64  2001/02/27 22:24:53  rgb
+ * Re-formatting debug output (line-splitting, joining, 1arg/line).
+ * Check for satoa() return codes.
+ *
+ * Revision 1.63  2000/11/29 20:14:06  rgb
+ * Add src= to the output of /proc/net/ipsec_spi and delete dst from IPIP.
+ *
+ * Revision 1.62  2000/11/06 04:31:24  rgb
+ * Ditched spin_lock_irqsave in favour of spin_lock_bh.
+ * Fixed longlong for pre-2.4 kernels (Svenning).
+ * Add Svenning's adaptive content compression.
+ * Disabled registration of ipcomp handler.
+ *
+ * Revision 1.61  2000/10/11 13:37:54  rgb
+ * #ifdef out debug print that causes proc/net/ipsec_version to oops.
+ *
+ * Revision 1.60  2000/09/20 03:59:01  rgb
+ * Change static info functions to DEBUG_NO_STATIC to reveal function names
+ * in oopsen.
+ *
+ * Revision 1.59  2000/09/16 01:06:26  rgb
+ * Added cast of var to silence compiler warning about long fed to int
+ * format.
+ *
+ * Revision 1.58  2000/09/15 11:37:01  rgb
+ * Merge in heavily modified Svenning Soerensen's <svenning@post5.tele.dk>
+ * IPCOMP zlib deflate code.
+ *
+ * Revision 1.57  2000/09/12 03:21:50  rgb
+ * Moved radij_c_version printing to ipsec_version_get_info().
+ * Reformatted ipsec_version_get_info().
+ * Added sysctl_{,un}register() calls.
+ *
+ * Revision 1.56  2000/09/08 19:16:50  rgb
+ * Change references from DEBUG_IPSEC to CONFIG_IPSEC_DEBUG.
+ * Removed all references to CONFIG_IPSEC_PFKEYv2.
+ *
+ * Revision 1.55  2000/08/30 05:19:03  rgb
+ * Cleaned up no longer used spi_next, netlink register/unregister, other
+ * minor cleanup.
+ * Removed cruft replaced by TDB_XFORM_NAME.
+ * Removed all the rest of the references to tdb_spi, tdb_proto, tdb_dst.
+ * Moved debug version strings to printk when /proc/net/ipsec_version is
+ * called.
+ *
+ * Revision 1.54  2000/08/20 18:31:05  rgb
+ * Changed cosmetic alignment in spi_info.
+ * Changed addtime and usetime to use actual value which is relative
+ * anyways, as intended. (Momchil)
+ *
+ * Revision 1.53  2000/08/18 17:37:03  rgb
+ * Added an (int) cast to shut up the compiler...
+ *
+ * Revision 1.52  2000/08/01 14:51:50  rgb
+ * Removed _all_ remaining traces of DES.
+ *
+ * Revision 1.51  2000/07/25 20:41:22  rgb
+ * Removed duplicate parameter in spi_getinfo.
+ *
+ * Revision 1.50  2000/07/17 03:21:45  rgb
+ * Removed /proc/net/ipsec_spinew.
+ *
+ * Revision 1.49  2000/06/28 05:46:51  rgb
+ * Renamed ivlen to iv_bits for consistency.
+ * Changed output of add and use times to be relative to now.
+ *
+ * Revision 1.48  2000/05/11 18:26:10  rgb
+ * Commented out calls to netlink_attach/detach to avoid activating netlink
+ * in the kenrel config.
+ *
+ * Revision 1.47  2000/05/10 22:35:26  rgb
+ * Comment out most of the startup version information.
+ *
+ * Revision 1.46  2000/03/22 16:15:36  rgb
+ * Fixed renaming of dev_get (MB).
+ *
+ * Revision 1.45  2000/03/16 06:40:48  rgb
+ * Hardcode PF_KEYv2 support.
+ *
+ * Revision 1.44  2000/01/22 23:19:20  rgb
+ * Simplified code to use existing macro TDB_XFORM_NAME().
+ *
+ * Revision 1.43  2000/01/21 06:14:04  rgb
+ * Print individual stats only if non-zero.
+ * Removed 'bits' from each keylength for brevity.
+ * Shortened lifetimes legend for brevity.
+ * Changed wording from 'last_used' to the clearer 'idle'.
+ *
+ * Revision 1.42  1999/12/31 14:57:19  rgb
+ * MB fix for new dummy-less proc_get_info in 2.3.35.
+ *
+ *
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ *
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/ipsec_ipcomp.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,256 @@
+/*
+ * processing code for IPCOMP
+ * Copyright (C) 2003 Michael Richardson <mcr@sandelman.ottawa.on.ca>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+char ipsec_ipcomp_c_version[] = "RCSID $Id: ipsec_ipcomp.c,v 1.5.2.3 2007-09-05 02:56:09 paul Exp $";
+#ifndef AUTOCONF_INCLUDED
+#include <linux/config.h>
+#endif
+#include <linux/version.h>
+
+#define __NO_VERSION__
+#include <linux/module.h>
+#include <linux/kernel.h> /* printk() */
+
+#include "openswan/ipsec_param.h"
+
+#ifdef MALLOC_SLAB
+# include <linux/slab.h> /* kmalloc() */
+#else /* MALLOC_SLAB */
+# include <linux/malloc.h> /* kmalloc() */
+#endif /* MALLOC_SLAB */
+#include <linux/errno.h>  /* error codes */
+#include <linux/types.h>  /* size_t */
+#include <linux/interrupt.h> /* mark_bh */
+
+#include <linux/netdevice.h>   /* struct device, and other headers */
+#include <linux/etherdevice.h> /* eth_type_trans */
+#include <linux/ip.h>          /* struct iphdr */
+#include <linux/skbuff.h>
+#include <openswan.h>
+#ifdef SPINLOCK
+# ifdef SPINLOCK_23
+#  include <linux/spinlock.h> /* *lock* */
+# else /* SPINLOCK_23 */
+#  include <asm/spinlock.h> /* *lock* */
+# endif /* SPINLOCK_23 */
+#endif /* SPINLOCK */
+
+#include <net/ip.h>
+
+#include "openswan/radij.h"
+#include "openswan/ipsec_encap.h"
+#include "openswan/ipsec_sa.h"
+
+#include "openswan/ipsec_radij.h"
+#include "openswan/ipsec_xform.h"
+#include "openswan/ipsec_tunnel.h"
+#include "openswan/ipsec_rcv.h"
+#include "openswan/ipsec_xmit.h"
+
+#include "openswan/ipsec_auth.h"
+
+#ifdef CONFIG_KLIPS_IPCOMP
+#include "openswan/ipsec_ipcomp.h"
+#endif /* CONFIG_KLIPS_IPCOMP */
+
+#include "openswan/ipsec_proto.h"
+
+#ifdef CONFIG_KLIPS_DEBUG
+int debug_ipcomp = 0;
+#endif /* CONFIG_KLIPS_DEBUG */
+
+
+#ifdef CONFIG_KLIPS_IPCOMP
+enum ipsec_rcv_value
+ipsec_rcv_ipcomp_checks(struct ipsec_rcv_state *irs,
+                       struct sk_buff *skb)
+{
+       int ipcompminlen;
+
+       ipcompminlen = sizeof(struct iphdr);
+
+       if(skb->len < (ipcompminlen + sizeof(struct ipcomphdr))) {
+               KLIPS_PRINT(debug_rcv & DB_RX_INAU,
+                           "klips_debug:ipsec_rcv: "
+                           "runt comp packet of skb->len=%d received from %s, dropped.\n",
+                           skb->len,
+                           irs->ipsaddr_txt);
+               if(irs->stats) {
+                       irs->stats->rx_errors++;
+               }
+               return IPSEC_RCV_BADLEN;
+       }
+
+       irs->protostuff.ipcompstuff.compp = (struct ipcomphdr *)skb_transport_header(skb);
+       irs->said.spi = htonl((__u32)ntohs(irs->protostuff.ipcompstuff.compp->ipcomp_cpi));
+       return IPSEC_RCV_OK;
+}
+
+enum ipsec_rcv_value
+ipsec_rcv_ipcomp_decomp(struct ipsec_rcv_state *irs)
+{
+       unsigned int flags = 0;
+       struct ipsec_sa *ipsp = irs->ipsp;
+       struct sk_buff *skb;
+
+       skb=irs->skb;
+
+       ipsec_xmit_dmp("ipcomp", skb_transport_header(skb), skb->len);
+
+       if(ipsp == NULL) {
+               return IPSEC_RCV_SAIDNOTFOUND;
+       }
+
+       if(sysctl_ipsec_inbound_policy_check &&
+          ((((ntohl(ipsp->ips_said.spi) & 0x0000ffff) != ntohl(irs->said.spi)) &&
+            (ipsp->ips_encalg != ntohl(irs->said.spi))   /* this is a workaround for peer non-compliance with rfc2393 */
+                   ))) {
+               char sa2[SATOT_BUF];
+               size_t sa_len2 = 0;
+
+               sa_len2 = KLIPS_SATOT(debug_rcv, &ipsp->ips_said, 0, sa2, sizeof(sa2));
+
+               KLIPS_PRINT(debug_rcv,
+                           "klips_debug:ipsec_rcv: "
+                           "Incoming packet with SA(IPCA):%s does not match policy SA(IPCA):%s cpi=%04x cpi->spi=%08x spi=%08x, spi->cpi=%04x for SA grouping, dropped.\n",
+                           irs->sa_len ? irs->sa : " (error)",
+                           ipsp != NULL ? (sa_len2 ? sa2 : " (error)") : "NULL",
+                           ntohs(irs->protostuff.ipcompstuff.compp->ipcomp_cpi),
+                           (__u32)ntohl(irs->said.spi),
+                           ipsp != NULL ? (__u32)ntohl((ipsp->ips_said.spi)) : 0,
+                           ipsp != NULL ? (__u16)(ntohl(ipsp->ips_said.spi) & 0x0000ffff) : 0);
+               if(irs->stats) {
+                       irs->stats->rx_dropped++;
+               }
+               return IPSEC_RCV_SAIDNOTFOUND;
+       }
+
+       ipsp->ips_comp_ratio_cbytes += ntohs(irs->ipp->tot_len);
+       irs->next_header = irs->protostuff.ipcompstuff.compp->ipcomp_nh;
+
+       skb = skb_decompress(skb, ipsp, &flags);
+       if (!skb || flags) {
+               spin_unlock(&tdb_lock);
+               KLIPS_PRINT(debug_rcv,
+                           "klips_debug:ipsec_rcv: "
+                           "skb_decompress() returned error flags=%x, dropped.\n",
+                           flags);
+               if (irs->stats) {
+                       if (flags)
+                               irs->stats->rx_errors++;
+                       else
+                               irs->stats->rx_dropped++;
+               }
+               return IPSEC_RCV_IPCOMPFAILED;
+       }
+
+       /* make sure we update the pointer */
+       irs->skb = skb;
+       
+#ifdef NET_21
+       irs->ipp = ip_hdr(skb);
+#else /* NET_21 */
+       irs->ipp = skb->ip_hdr;
+#endif /* NET_21 */
+
+       ipsp->ips_comp_ratio_dbytes += ntohs(irs->ipp->tot_len);
+
+       KLIPS_PRINT(debug_rcv,
+                   "klips_debug:ipsec_rcv: "
+                   "packet decompressed SA(IPCA):%s cpi->spi=%08x spi=%08x, spi->cpi=%04x, nh=%d.\n",
+                   irs->sa_len ? irs->sa : " (error)",
+                   (__u32)ntohl(irs->said.spi),
+                   ipsp != NULL ? (__u32)ntohl((ipsp->ips_said.spi)) : 0,
+                   ipsp != NULL ? (__u16)(ntohl(ipsp->ips_said.spi) & 0x0000ffff) : 0,
+                   irs->next_header);
+       KLIPS_IP_PRINT(debug_rcv & DB_RX_PKTRX, irs->ipp);
+
+       return IPSEC_RCV_OK;
+}
+
+enum ipsec_xmit_value
+ipsec_xmit_ipcomp_setup(struct ipsec_xmit_state *ixs)
+{
+  unsigned int flags = 0;
+#ifdef CONFIG_KLIPS_DEBUG
+  unsigned int old_tot_len = ntohs(ixs->iph->tot_len);
+#endif /* CONFIG_KLIPS_DEBUG */
+
+  ixs->ipsp->ips_comp_ratio_dbytes += ntohs(ixs->iph->tot_len);
+
+  ixs->skb = skb_compress(ixs->skb, ixs->ipsp, &flags);
+
+#ifdef NET_21
+  ixs->iph = ip_hdr(ixs->skb);
+#else /* NET_21 */
+  ixs->iph = ixs->skb->ip_hdr;
+#endif /* NET_21 */
+  
+  ixs->ipsp->ips_comp_ratio_cbytes += ntohs(ixs->iph->tot_len);
+  
+#ifdef CONFIG_KLIPS_DEBUG
+  if (debug_tunnel & DB_TN_CROUT)
+    {
+      if (old_tot_len > ntohs(ixs->iph->tot_len))
+       KLIPS_PRINT(debug_tunnel & DB_TN_CROUT,
+                   "klips_debug:ipsec_xmit_encap_once: "
+                   "packet shrunk from %d to %d bytes after compression, cpi=%04x (should be from spi=%08x, spi&0xffff=%04x.\n",
+                   old_tot_len, ntohs(ixs->iph->tot_len),
+                   ntohs(((struct ipcomphdr*)(((char*)ixs->iph) + ((ixs->iph->ihl) << 2)))->ipcomp_cpi),
+                   ntohl(ixs->ipsp->ips_said.spi),
+                   (__u16)(ntohl(ixs->ipsp->ips_said.spi) & 0x0000ffff));
+      else
+       KLIPS_PRINT(debug_tunnel & DB_TN_CROUT,
+                   "klips_debug:ipsec_xmit_encap_once: "
+                   "packet did not compress (flags = %d).\n",
+                   flags);
+    }
+#endif /* CONFIG_KLIPS_DEBUG */
+
+  return IPSEC_XMIT_OK;
+}
+
+struct xform_functions ipcomp_xform_funcs[]={
+       {rcv_checks:  ipsec_rcv_ipcomp_checks,
+        rcv_decrypt: ipsec_rcv_ipcomp_decomp,
+        xmit_setup:  ipsec_xmit_ipcomp_setup,
+        xmit_headroom: 0,
+        xmit_needtailroom: 0,
+       },
+};
+
+#if 0
+/* We probably don't want to install a pure IPCOMP protocol handler, but
+   only want to handle IPCOMP if it is encapsulated inside an ESP payload
+   (which is already handled) */
+#ifdef CONFIG_KLIPS_IPCOMP
+struct inet_protocol comp_protocol =
+{
+       ipsec_rcv,                      /* COMP handler         */
+       NULL,                           /* COMP error control   */
+#ifdef NETDEV_25
+       1,                              /* no policy */
+#else
+       0,                              /* next */
+       IPPROTO_COMP,                   /* protocol ID */
+       0,                              /* copy */
+       NULL,                           /* data */
+       "COMP"                          /* name */
+#endif
+};
+#endif /* CONFIG_KLIPS_IPCOMP */
+#endif
+
+#endif /* CONFIG_KLIPS_IPCOMP */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/ipsec_ipip.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,122 @@
+/*
+ * processing code for IPIP
+ * Copyright (C) 2003 Michael Richardson <mcr@sandelman.ottawa.on.ca>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+char ipsec_ipip_c_version[] = "RCSID $Id: ipsec_ipip.c,v 1.3.2.4 2007-09-05 02:56:09 paul Exp $";
+#ifndef AUTOCONF_INCLUDED
+#include <linux/config.h>
+#endif
+#include <linux/version.h>
+
+#define __NO_VERSION__
+#include <linux/module.h>
+#include <linux/kernel.h> /* printk() */
+
+#include "openswan/ipsec_param.h"
+
+#ifdef MALLOC_SLAB
+# include <linux/slab.h> /* kmalloc() */
+#else /* MALLOC_SLAB */
+# include <linux/malloc.h> /* kmalloc() */
+#endif /* MALLOC_SLAB */
+#include <linux/errno.h>  /* error codes */
+#include <linux/types.h>  /* size_t */
+#include <linux/interrupt.h> /* mark_bh */
+
+#include <linux/netdevice.h>   /* struct device, and other headers */
+#include <linux/etherdevice.h> /* eth_type_trans */
+#include <linux/ip.h>          /* struct iphdr */
+#include <linux/skbuff.h>
+#include <openswan.h>
+#ifdef SPINLOCK
+# ifdef SPINLOCK_23
+#  include <linux/spinlock.h> /* *lock* */
+# else /* SPINLOCK_23 */
+#  include <asm/spinlock.h> /* *lock* */
+# endif /* SPINLOCK_23 */
+#endif /* SPINLOCK */
+
+#include <net/ip.h>
+
+#include "openswan/radij.h"
+#include "openswan/ipsec_encap.h"
+#include "openswan/ipsec_sa.h"
+
+#include "openswan/ipsec_radij.h"
+#include "openswan/ipsec_xform.h"
+#include "openswan/ipsec_tunnel.h"
+#include "openswan/ipsec_rcv.h"
+#include "openswan/ipsec_xmit.h"
+
+#include "openswan/ipsec_auth.h"
+#include "openswan/ipsec_ipip.h"
+#include "openswan/ipsec_param.h"
+
+#include "openswan/ipsec_proto.h"
+
+enum ipsec_xmit_value
+ipsec_xmit_ipip_setup(struct ipsec_xmit_state *ixs)
+{
+  ixs->iph->version  = 4;
+
+  switch(sysctl_ipsec_tos) {
+  case 0:
+#ifdef NET_21
+    ixs->iph->tos = ip_hdr(ixs->skb)->tos;
+#else /* NET_21 */
+    ixs->iph->tos = ixs->skb->ip_hdr->tos;
+#endif /* NET_21 */
+    break;
+  case 1:
+    ixs->iph->tos = 0;
+    break;
+  default:
+    break;
+  }
+  ixs->iph->ttl      = SYSCTL_IPSEC_DEFAULT_TTL;
+  ixs->iph->frag_off = 0;
+  ixs->iph->saddr    = ((struct sockaddr_in*)(ixs->ipsp->ips_addr_s))->sin_addr.s_addr;
+  ixs->iph->daddr    = ((struct sockaddr_in*)(ixs->ipsp->ips_addr_d))->sin_addr.s_addr;
+  ixs->iph->protocol = IPPROTO_IPIP;
+  ixs->iph->ihl      = sizeof(struct iphdr) >> 2;
+  
+  KLIPS_IP_SELECT_IDENT(ixs->iph, ixs->skb);
+  
+  ixs->newdst = (__u32)ixs->iph->daddr;
+  ixs->newsrc = (__u32)ixs->iph->saddr;
+  
+#ifdef NET_21
+  skb_set_transport_header(ixs->skb, ipsec_skb_offset(ixs->skb, ip_hdr(ixs->skb)));
+#endif /* NET_21 */
+  return IPSEC_XMIT_OK;
+}
+
+struct xform_functions ipip_xform_funcs[]={
+  {    rcv_checks:         NULL,
+       rcv_setup_auth:     NULL,
+       rcv_calc_auth:      NULL,
+       rcv_decrypt:        NULL,
+
+       xmit_setup:         ipsec_xmit_ipip_setup,
+       xmit_headroom:      sizeof(struct iphdr),
+       xmit_needtailroom:  0,
+  },
+};
+
+
+
+
+
+
+
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/ipsec_kern24.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,74 @@
+/*
+ * Copyright 2005 (C) Michael Richardson <mcr@xelerance.com>
+ *
+ * This is a file of functions which are present in 2.6 kernels,
+ * but are not available by default in the 2.4 series.
+ *
+ * As such this code is usually from the Linux kernel, and is covered by
+ * GPL.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * $Id: ipsec_kern24.c,v 1.2 2005-05-20 03:19:18 mcr Exp $
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/mm.h>
+#include <linux/spinlock.h>
+
+/*
+ * printk rate limiting, lifted from the networking subsystem.
+ *
+ * This enforces a rate limit: not more than one kernel message
+ * every printk_ratelimit_jiffies to make a denial-of-service
+ * attack impossible.
+ */
+static spinlock_t ratelimit_lock = SPIN_LOCK_UNLOCKED;
+
+int __printk_ratelimit(int ratelimit_jiffies, int ratelimit_burst)
+{
+       static unsigned long toks = 10*5*HZ;
+       static unsigned long last_msg;
+       static int missed;
+       unsigned long flags;
+       unsigned long now = jiffies;
+
+       spin_lock_irqsave(&ratelimit_lock, flags);
+       toks += now - last_msg;
+       last_msg = now;
+       if (toks > (ratelimit_burst * ratelimit_jiffies))
+               toks = ratelimit_burst * ratelimit_jiffies;
+       if (toks >= ratelimit_jiffies) {
+               int lost = missed;
+               missed = 0;
+               toks -= ratelimit_jiffies;
+               spin_unlock_irqrestore(&ratelimit_lock, flags);
+               if (lost)
+                       printk(KERN_WARNING "printk: %d messages suppressed.\n", lost);
+               return 1;
+       }
+       missed++;
+       spin_unlock_irqrestore(&ratelimit_lock, flags);
+       return 0;
+}
+
+/* minimum time in jiffies between messages */
+int printk_ratelimit_jiffies = 5*HZ;
+
+/* number of messages we send before ratelimiting */
+int printk_ratelimit_burst = 10;
+
+int printk_ratelimit(void)
+{
+       return __printk_ratelimit(printk_ratelimit_jiffies,
+                               printk_ratelimit_burst);
+}
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/ipsec_life.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,277 @@
+/*
+ * @(#) lifetime structure utilities
+ *
+ * Copyright (C) 2001  Richard Guy Briggs  <rgb@freeswan.org>
+ *                 and Michael Richardson  <mcr@freeswan.org>
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id: ipsec_life.c,v 1.13.10.2 2007-09-05 02:39:38 paul Exp $
+ *
+ */
+
+/* 
+ * This provides series of utility functions for dealing with lifetime
+ * structures.
+ *
+ * ipsec_check_lifetime - returns -1    hard lifetime exceeded
+ *                                 0    soft lifetime exceeded
+ *                                 1    everything is okay
+ *                        based upon whether or not the count exceeds hard/soft
+ *
+ */
+
+#define __NO_VERSION__
+#include <linux/module.h>
+#ifndef AUTOCONF_INCLUDED
+#include <linux/config.h>
+#endif /* for CONFIG_IP_FORWARD */
+#include <linux/version.h>
+#include <linux/kernel.h> /* printk() */
+
+#include "openswan/ipsec_param.h"
+
+#include <linux/netdevice.h>   /* struct device, struct net_device_stats and other headers */
+#include <linux/etherdevice.h> /* eth_type_trans */
+#include <linux/skbuff.h>
+#include <linux/ip.h>
+#include <openswan.h>
+
+#include "openswan/radij.h"
+#include "openswan/ipsec_life.h"
+#include "openswan/ipsec_xform.h"
+#include "openswan/ipsec_eroute.h"
+#include "openswan/ipsec_encap.h"
+#include "openswan/ipsec_radij.h"
+
+#include "openswan/ipsec_sa.h"
+#include "openswan/ipsec_tunnel.h"
+#include "openswan/ipsec_ipe4.h"
+#include "openswan/ipsec_ah.h"
+#include "openswan/ipsec_esp.h"
+
+#ifdef CONFIG_KLIPS_IPCOMP
+#include "openswan/ipcomp.h"
+#endif /* CONFIG_KLIPS_IPCOMP */
+
+#include <pfkeyv2.h>
+#include <pfkey.h>
+
+#include "openswan/ipsec_proto.h"
+
+
+enum ipsec_life_alive
+ipsec_lifetime_check(struct ipsec_lifetime64 *il64,
+                    const char *lifename,
+                    const char *saname,
+                    enum ipsec_life_type ilt,
+                    enum ipsec_direction idir,
+                    struct ipsec_sa *ips)
+{
+       __u64 count;
+       const char *dir;
+
+       if(saname == NULL) {
+               saname = "unknown-SA";
+       }
+
+       if(idir == ipsec_incoming) {
+               dir = "incoming";
+       } else {
+               dir = "outgoing";
+       }
+               
+
+       if(ilt == ipsec_life_timebased) {
+               count = jiffies/HZ - il64->ipl_count;
+       } else {
+               count = il64->ipl_count;
+       }
+
+       if(il64->ipl_hard &&
+          (count > il64->ipl_hard)) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                           "klips_debug:ipsec_lifetime_check: "
+                           "hard %s lifetime of SA:<%s%s%s> %s has been reached, SA expired, "
+                           "%s packet dropped.\n",
+                           lifename,
+                           IPS_XFORM_NAME(ips),
+                           saname,
+                           dir);
+
+               pfkey_expire(ips, 1);
+               return ipsec_life_harddied;
+       }
+
+       if(il64->ipl_soft &&
+          (count > il64->ipl_soft)) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                           "klips_debug:ipsec_lifetime_check: "
+                           "soft %s lifetime of SA:<%s%s%s> %s has been reached, SA expiring, "
+                           "soft expire message sent up, %s packet still processed.\n",
+                           lifename,
+                           IPS_XFORM_NAME(ips),
+                           saname,
+                           dir);
+
+               if(ips->ips_state != SADB_SASTATE_DYING) {
+                       pfkey_expire(ips, 0);
+               }
+               ips->ips_state = SADB_SASTATE_DYING;
+
+               return ipsec_life_softdied;
+       }
+       return ipsec_life_okay;
+}
+
+
+/*
+ * This function takes a buffer (with length), a lifetime name and type,
+ * and formats a string to represent the current values of the lifetime.
+ * 
+ * It returns the number of bytes that the format took (or would take,
+ * if the buffer were large enough: snprintf semantics).
+ * This is used in /proc routines and in debug output.
+ */
+int
+ipsec_lifetime_format(char *buffer,
+                     int   buflen,
+                     char *lifename,
+                     enum ipsec_life_type timebaselife,
+                     struct ipsec_lifetime64 *lifetime)
+{
+       int len = 0;
+       __u64 count;
+
+       if(timebaselife == ipsec_life_timebased) {
+               count = jiffies/HZ - lifetime->ipl_count;
+       } else {
+               count = lifetime->ipl_count;
+       }
+
+       if(lifetime->ipl_count > 1 || 
+          lifetime->ipl_soft      ||
+          lifetime->ipl_hard) {
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,0)) 
+               len = ipsec_snprintf(buffer, buflen,
+                              "%s(%Lu,%Lu,%Lu)",
+                              lifename,
+                              count,
+                              lifetime->ipl_soft,
+                              lifetime->ipl_hard);
+#else /* XXX high 32 bits are not displayed */
+               len = ipsec_snprintf(buffer, buflen,
+                               "%s(%lu,%lu,%lu)",
+                               lifename,
+                               (unsigned long)count,
+                               (unsigned long)lifetime->ipl_soft,
+                               (unsigned long)lifetime->ipl_hard);
+#endif
+       }
+
+       return len;
+}
+
+void
+ipsec_lifetime_update_hard(struct ipsec_lifetime64 *lifetime,
+                         __u64 newvalue)
+{
+       if(newvalue &&
+          (!lifetime->ipl_hard ||
+           (newvalue < lifetime->ipl_hard))) {
+               lifetime->ipl_hard = newvalue;
+
+               if(!lifetime->ipl_soft &&
+                  (lifetime->ipl_hard < lifetime->ipl_soft)) {
+                       lifetime->ipl_soft = lifetime->ipl_hard;
+               }
+       }
+}      
+
+void
+ipsec_lifetime_update_soft(struct ipsec_lifetime64 *lifetime,
+                         __u64 newvalue)
+{
+       if(newvalue &&
+          (!lifetime->ipl_soft ||
+           (newvalue < lifetime->ipl_soft))) {
+               lifetime->ipl_soft = newvalue;
+
+               if(lifetime->ipl_hard &&
+                  (lifetime->ipl_hard < lifetime->ipl_soft)) {
+                       lifetime->ipl_soft = lifetime->ipl_hard;
+               }
+       }
+}
+
+       
+/*
+ * $Log: ipsec_life.c,v $
+ * Revision 1.13.10.2  2007-09-05 02:39:38  paul
+ * include ip.h to account for header file surgery in 2.6.22 [david]
+ *
+ * Revision 1.13.10.1  2006/10/06 21:39:26  paul
+ * Fix for 2.6.18+ only include linux/config.h if AUTOCONF_INCLUDED is not
+ * set. This is defined through autoconf.h which is included through the
+ * linux kernel build macros.
+ *
+ * Revision 1.13  2004/07/10 19:11:18  mcr
+ *     CONFIG_IPSEC -> CONFIG_KLIPS.
+ *
+ * Revision 1.12  2004/04/23 20:44:35  ken
+ * Update comments
+ *
+ * Revision 1.11  2004/04/06 02:49:26  mcr
+ *     pullup of algo code from alg-branch.
+ *
+ * Revision 1.10  2004/03/30 11:03:10  paul
+ * two more occurances of snprintf, found by Sam from a users oops msg.
+ *
+ * Revision 1.9  2003/10/31 02:27:55  mcr
+ *     pulled up port-selector patches and sa_id elimination.
+ *
+ * Revision 1.8.4.1  2003/10/29 01:30:41  mcr
+ *     elimited "struct sa_id".
+ *
+ * Revision 1.8  2003/02/06 02:00:10  rgb
+ * Fixed incorrect debugging text label
+ *
+ * Revision 1.7  2002/05/23 07:16:26  rgb
+ * Fixed absolute/relative reference to lifetime count printout.
+ *
+ * Revision 1.6  2002/04/24 07:55:32  mcr
+ *     #include patches and Makefiles for post-reorg compilation.
+ *
+ * Revision 1.5  2002/04/24 07:36:28  mcr
+ * Moved from ./klips/net/ipsec/ipsec_life.c,v
+ *
+ * Revision 1.4  2002/01/29 17:17:55  mcr
+ *     moved include of ipsec_param.h to after include of linux/kernel.h
+ *     otherwise, it seems that some option that is set in ipsec_param.h
+ *     screws up something subtle in the include path to kernel.h, and
+ *     it complains on the snprintf() prototype.
+ *
+ * Revision 1.3  2002/01/29 02:13:17  mcr
+ *     introduction of ipsec_kversion.h means that include of
+ *     ipsec_param.h must preceed any decisions about what files to
+ *     include to deal with differences in kernel source.
+ *
+ * Revision 1.2  2001/11/26 09:16:14  rgb
+ * Merge MCR's ipsec_sa, eroute, proc and struct lifetime changes.
+ *
+ * Revision 1.1.2.1  2001/09/25 02:25:57  mcr
+ *     lifetime structure created and common functions created.
+ *
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ *
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/ipsec_mast.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,1099 @@
+/*
+ * IPSEC MAST code.
+ * Copyright (C) 1996, 1997  John Ioannidis.
+ * Copyright (C) 1998, 1999, 2000, 2001, 2002  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+char ipsec_mast_c_version[] = "RCSID $Id: ipsec_mast.c,v 1.7.2.1 2006-10-06 21:39:26 paul Exp $";
+
+#define __NO_VERSION__
+#include <linux/module.h>
+#ifndef AUTOCONF_INCLUDED
+#include <linux/config.h>
+#endif /* for CONFIG_IP_FORWARD */
+#include <linux/version.h>
+#include <linux/kernel.h> /* printk() */
+
+#include "freeswan/ipsec_param.h"
+
+#ifdef MALLOC_SLAB
+# include <linux/slab.h> /* kmalloc() */
+#else /* MALLOC_SLAB */
+# include <linux/malloc.h> /* kmalloc() */
+#endif /* MALLOC_SLAB */
+#include <linux/errno.h>  /* error codes */
+#include <linux/types.h>  /* size_t */
+#include <linux/interrupt.h> /* mark_bh */
+
+#include <linux/netdevice.h>   /* struct device, struct net_device_stats, dev_queue_xmit() and other headers */
+#include <linux/etherdevice.h> /* eth_type_trans */
+#include <linux/ip.h>          /* struct iphdr */
+#include <linux/tcp.h>         /* struct tcphdr */
+#include <linux/udp.h>         /* struct udphdr */
+#include <linux/skbuff.h>
+#include <freeswan.h>
+#include <linux/in6.h>
+#include <net/dst.h>
+#undef dev_kfree_skb
+#define dev_kfree_skb(a,b) kfree_skb(a)
+#define PHYSDEV_TYPE
+#include <net/icmp.h>          /* icmp_send() */
+#include <net/ip.h>
+#include <linux/netfilter_ipv4.h>
+
+#include <linux/if_arp.h>
+
+#include "freeswan/radij.h"
+#include "freeswan/ipsec_life.h"
+#include "freeswan/ipsec_xform.h"
+#include "freeswan/ipsec_eroute.h"
+#include "freeswan/ipsec_encap.h"
+#include "freeswan/ipsec_radij.h"
+#include "freeswan/ipsec_sa.h"
+#include "freeswan/ipsec_tunnel.h"
+#include "freeswan/ipsec_mast.h"
+#include "freeswan/ipsec_ipe4.h"
+#include "freeswan/ipsec_ah.h"
+#include "freeswan/ipsec_esp.h"
+
+#include <pfkeyv2.h>
+#include <pfkey.h>
+
+#include "freeswan/ipsec_proto.h"
+
+int ipsec_maxdevice_count = -1;
+
+DEBUG_NO_STATIC int
+ipsec_mast_open(struct net_device *dev)
+{
+       struct ipsecpriv *prv = dev->priv;
+       
+       /*
+        * Can't open until attached.
+        */
+
+       KLIPS_PRINT(debug_mast & DB_MAST_INIT,
+                   "klips_debug:ipsec_mast_open: "
+                   "dev = %s, prv->dev = %s\n",
+                   dev->name, prv->dev?prv->dev->name:"NONE");
+
+       if (prv->dev == NULL)
+               return -ENODEV;
+       
+       KLIPS_INC_USE;
+       return 0;
+}
+
+DEBUG_NO_STATIC int
+ipsec_mast_close(struct net_device *dev)
+{
+       KLIPS_DEC_USE;
+       return 0;
+}
+
+static inline int ipsec_mast_xmit2(struct sk_buff *skb)
+{
+       return ip_send(skb);
+}
+
+enum ipsec_xmit_value
+ipsec_mast_send(struct ipsec_xmit_state*ixs)
+{
+       /* new route/dst cache code from James Morris */
+       ixs->skb->dev = ixs->physdev;
+       /*skb_orphan(ixs->skb);*/
+       if((ixs->error = ip_route_output(&ixs->route,
+                                   ixs->skb->nh.iph->daddr,
+                                   ixs->pass ? 0 : ixs->skb->nh.iph->saddr,
+                                   RT_TOS(ixs->skb->nh.iph->tos),
+                                   ixs->physdev->iflink /* rgb: should this be 0? */))) {
+               ixs->stats->tx_errors++;
+               KLIPS_PRINT(debug_mast & DB_MAST_XMIT,
+                           "klips_debug:ipsec_xmit_send: "
+                           "ip_route_output failed with error code %d, rt->u.dst.dev=%s, dropped\n",
+                           ixs->error,
+                           ixs->route->u.dst.dev->name);
+               return IPSEC_XMIT_ROUTEERR;
+       }
+       if(ixs->dev == ixs->route->u.dst.dev) {
+               ip_rt_put(ixs->route);
+               /* This is recursion, drop it. */
+               ixs->stats->tx_errors++;
+               KLIPS_PRINT(debug_mast & DB_MAST_XMIT,
+                           "klips_debug:ipsec_xmit_send: "
+                           "suspect recursion, dev=rt->u.dst.dev=%s, dropped\n",
+                           ixs->dev->name);
+               return IPSEC_XMIT_RECURSDETECT;
+       }
+       dst_release(ixs->skb->dst);
+       ixs->skb->dst = &ixs->route->u.dst;
+       ixs->stats->tx_bytes += ixs->skb->len;
+       if(ixs->skb->len < ixs->skb->nh.raw - ixs->skb->data) {
+               ixs->stats->tx_errors++;
+               printk(KERN_WARNING
+                      "klips_error:ipsec_xmit_send: "
+                      "tried to __skb_pull nh-data=%ld, %d available.  This should never happen, please report.\n",
+                      (unsigned long)(ixs->skb->nh.raw - ixs->skb->data),
+                      ixs->skb->len);
+               return IPSEC_XMIT_PUSHPULLERR;
+       }
+       __skb_pull(ixs->skb, ixs->skb->nh.raw - ixs->skb->data);
+#ifdef SKB_RESET_NFCT
+       nf_conntrack_put(ixs->skb->nfct);
+       ixs->skb->nfct = NULL;
+#ifdef CONFIG_NETFILTER_DEBUG
+       ixs->skb->nf_debug = 0;
+#endif /* CONFIG_NETFILTER_DEBUG */
+#endif /* SKB_RESET_NFCT */
+       KLIPS_PRINT(debug_mast & DB_MAST_XMIT,
+                   "klips_debug:ipsec_xmit_send: "
+                   "...done, calling ip_send() on device:%s\n",
+                   ixs->skb->dev ? ixs->skb->dev->name : "NULL");
+       KLIPS_IP_PRINT(debug_mast & DB_MAST_XMIT, ixs->skb->nh.iph);
+       {
+               int err;
+
+               err = NF_HOOK(PF_INET, NF_IP_LOCAL_OUT, ixs->skb, NULL, ixs->route->u.dst.dev,
+                             ipsec_mast_xmit2);
+               if(err != NET_XMIT_SUCCESS && err != NET_XMIT_CN) {
+                       if(net_ratelimit())
+                               printk(KERN_ERR
+                                      "klips_error:ipsec_xmit_send: "
+                                      "ip_send() failed, err=%d\n", 
+                                      -err);
+                       ixs->stats->tx_errors++;
+                       ixs->stats->tx_aborted_errors++;
+                       ixs->skb = NULL;
+                       return IPSEC_XMIT_IPSENDFAILURE;
+               }
+       }
+       ixs->stats->tx_packets++;
+
+       ixs->skb = NULL;
+       
+       return IPSEC_XMIT_OK;
+}
+
+void
+ipsec_mast_cleanup(struct ipsec_xmit_state*ixs)
+{
+#if defined(HAS_NETIF_QUEUE) || defined (HAVE_NETIF_QUEUE)
+       netif_wake_queue(ixs->dev);
+#else /* defined(HAS_NETIF_QUEUE) || defined (HAVE_NETIF_QUEUE) */
+       ixs->dev->tbusy = 0;
+#endif /* defined(HAS_NETIF_QUEUE) || defined (HAVE_NETIF_QUEUE) */
+       if(ixs->saved_header) {
+               kfree(ixs->saved_header);
+       }
+       if(ixs->skb) {
+               dev_kfree_skb(ixs->skb, FREE_WRITE);
+       }
+       if(ixs->oskb) {
+               dev_kfree_skb(ixs->oskb, FREE_WRITE);
+       }
+       if (ixs->ips.ips_ident_s.data) {
+               kfree(ixs->ips.ips_ident_s.data);
+       }
+       if (ixs->ips.ips_ident_d.data) {
+               kfree(ixs->ips.ips_ident_d.data);
+       }
+}
+
+#if 0
+/*
+ *     This function assumes it is being called from dev_queue_xmit()
+ *     and that skb is filled properly by that function.
+ */
+int
+ipsec_mast_start_xmit(struct sk_buff *skb, struct net_device *dev, IPsecSAref_t SAref)
+{
+       struct ipsec_xmit_state ixs_mem;
+       struct ipsec_xmit_state *ixs = &ixs_mem;
+       enum ipsec_xmit_value stat = IPSEC_XMIT_OK;
+
+       /* dev could be a mast device, but should be optional, I think... */
+       /* SAref is also optional, but one of the two must be present. */
+       /* I wonder if it could accept no device or saref and guess? */
+
+/*     ipsec_xmit_sanity_check_dev(ixs); */
+
+       ipsec_xmit_sanity_check_skb(ixs);
+
+       ipsec_xmit_adjust_hard_header(ixs);
+
+       stat = ipsec_xmit_encap_bundle(ixs);
+       if(stat != IPSEC_XMIT_OK) {
+               /* SA processing failed */
+       }
+
+       ipsec_xmit_hard_header_restore();
+}
+#endif
+
+DEBUG_NO_STATIC struct net_device_stats *
+ipsec_mast_get_stats(struct net_device *dev)
+{
+       return &(((struct ipsecpriv *)(dev->priv))->mystats);
+}
+
+/*
+ * Revectored calls.
+ * For each of these calls, a field exists in our private structure.
+ */
+
+DEBUG_NO_STATIC int
+ipsec_mast_hard_header(struct sk_buff *skb, struct net_device *dev,
+       unsigned short type, void *daddr, void *saddr, unsigned len)
+{
+       struct ipsecpriv *prv = dev->priv;
+       struct net_device *tmp;
+       int ret;
+       struct net_device_stats *stats; /* This device's statistics */
+       
+       if(skb == NULL) {
+               KLIPS_PRINT(debug_mast & DB_MAST_REVEC,
+                           "klips_debug:ipsec_mast_hard_header: "
+                           "no skb...\n");
+               return -ENODATA;
+       }
+
+       if(dev == NULL) {
+               KLIPS_PRINT(debug_mast & DB_MAST_REVEC,
+                           "klips_debug:ipsec_mast_hard_header: "
+                           "no device...\n");
+               return -ENODEV;
+       }
+
+       KLIPS_PRINT(debug_mast & DB_MAST_REVEC,
+                   "klips_debug:ipsec_mast_hard_header: "
+                   "skb->dev=%s dev=%s.\n",
+                   skb->dev ? skb->dev->name : "NULL",
+                   dev->name);
+       
+       if(prv == NULL) {
+               KLIPS_PRINT(debug_mast & DB_MAST_REVEC,
+                           "klips_debug:ipsec_mast_hard_header: "
+                           "no private space associated with dev=%s\n",
+                           dev->name ? dev->name : "NULL");
+               return -ENODEV;
+       }
+
+       stats = (struct net_device_stats *) &(prv->mystats);
+
+       if(prv->dev == NULL) {
+               KLIPS_PRINT(debug_mast & DB_MAST_REVEC,
+                           "klips_debug:ipsec_mast_hard_header: "
+                           "no physical device associated with dev=%s\n",
+                           dev->name ? dev->name : "NULL");
+               stats->tx_dropped++;
+               return -ENODEV;
+       }
+
+       /* check if we have to send a IPv6 packet. It might be a Router
+          Solicitation, where the building of the packet happens in
+          reverse order:
+          1. ll hdr,
+          2. IPv6 hdr,
+          3. ICMPv6 hdr
+          -> skb->nh.raw is still uninitialized when this function is
+          called!!  If this is no IPv6 packet, we can print debugging
+          messages, otherwise we skip all debugging messages and just
+          build the ll header */
+       if(type != ETH_P_IPV6) {
+               /* execute this only, if we don't have to build the
+                  header for a IPv6 packet */
+               if(!prv->hard_header) {
+                       KLIPS_PRINT(debug_mast & DB_MAST_REVEC,
+                                   "klips_debug:ipsec_mast_hard_header: "
+                                   "physical device has been detached, packet dropped 0p%p->0p%p len=%d type=%d dev=%s->NULL ",
+                                   saddr,
+                                   daddr,
+                                   len,
+                                   type,
+                                   dev->name);
+                       KLIPS_PRINTMORE(debug_mast & DB_MAST_REVEC,
+                                       "ip=%08x->%08x\n",
+                                       (__u32)ntohl(skb->nh.iph->saddr),
+                                       (__u32)ntohl(skb->nh.iph->daddr) );
+                       stats->tx_dropped++;
+                       return -ENODEV;
+               }
+               
+#define da ((struct net_device *)(prv->dev))->dev_addr
+               KLIPS_PRINT(debug_mast & DB_MAST_REVEC,
+                           "klips_debug:ipsec_mast_hard_header: "
+                           "Revectored 0p%p->0p%p len=%d type=%d dev=%s->%s dev_addr=%02x:%02x:%02x:%02x:%02x:%02x ",
+                           saddr,
+                           daddr,
+                           len,
+                           type,
+                           dev->name,
+                           prv->dev->name,
+                           da[0], da[1], da[2], da[3], da[4], da[5]);
+               KLIPS_PRINTMORE(debug_mast & DB_MAST_REVEC,
+                           "ip=%08x->%08x\n",
+                           (__u32)ntohl(skb->nh.iph->saddr),
+                           (__u32)ntohl(skb->nh.iph->daddr) );
+       } else {
+               KLIPS_PRINT(debug_mast,
+                           "klips_debug:ipsec_mast_hard_header: "
+                           "is IPv6 packet, skip debugging messages, only revector and build linklocal header.\n");
+       }                                                                       
+       tmp = skb->dev;
+       skb->dev = prv->dev;
+       ret = prv->hard_header(skb, prv->dev, type, (void *)daddr, (void *)saddr, len);
+       skb->dev = tmp;
+       return ret;
+}
+
+DEBUG_NO_STATIC int
+ipsec_mast_rebuild_header(struct sk_buff *skb)
+{
+       struct ipsecpriv *prv = skb->dev->priv;
+       struct net_device *tmp;
+       int ret;
+       struct net_device_stats *stats; /* This device's statistics */
+       
+       if(skb->dev == NULL) {
+               KLIPS_PRINT(debug_mast & DB_MAST_REVEC,
+                           "klips_debug:ipsec_mast_rebuild_header: "
+                           "no device...");
+               return -ENODEV;
+       }
+
+       if(prv == NULL) {
+               KLIPS_PRINT(debug_mast & DB_MAST_REVEC,
+                           "klips_debug:ipsec_mast_rebuild_header: "
+                           "no private space associated with dev=%s",
+                           skb->dev->name ? skb->dev->name : "NULL");
+               return -ENODEV;
+       }
+
+       stats = (struct net_device_stats *) &(prv->mystats);
+
+       if(prv->dev == NULL) {
+               KLIPS_PRINT(debug_mast & DB_MAST_REVEC,
+                           "klips_debug:ipsec_mast_rebuild_header: "
+                           "no physical device associated with dev=%s",
+                           skb->dev->name ? skb->dev->name : "NULL");
+               stats->tx_dropped++;
+               return -ENODEV;
+       }
+
+       if(!prv->rebuild_header) {
+               KLIPS_PRINT(debug_mast & DB_MAST_REVEC,
+                           "klips_debug:ipsec_mast_rebuild_header: "
+                           "physical device has been detached, packet dropped skb->dev=%s->NULL ",
+                           skb->dev->name);
+               KLIPS_PRINT(debug_mast & DB_MAST_REVEC,
+                           "ip=%08x->%08x\n",
+                           (__u32)ntohl(skb->nh.iph->saddr),
+                           (__u32)ntohl(skb->nh.iph->daddr) );
+               stats->tx_dropped++;
+               return -ENODEV;
+       }
+
+       KLIPS_PRINT(debug_mast & DB_MAST_REVEC,
+                   "klips_debug:ipsec_mast: "
+                   "Revectored rebuild_header dev=%s->%s ",
+                   skb->dev->name, prv->dev->name);
+       KLIPS_PRINT(debug_mast & DB_MAST_REVEC,
+                   "ip=%08x->%08x\n",
+                   (__u32)ntohl(skb->nh.iph->saddr),
+                   (__u32)ntohl(skb->nh.iph->daddr) );
+       tmp = skb->dev;
+       skb->dev = prv->dev;
+       
+       ret = prv->rebuild_header(skb);
+       skb->dev = tmp;
+       return ret;
+}
+
+DEBUG_NO_STATIC int
+ipsec_mast_set_mac_address(struct net_device *dev, void *addr)
+{
+       struct ipsecpriv *prv = dev->priv;
+       
+       struct net_device_stats *stats; /* This device's statistics */
+       
+       if(dev == NULL) {
+               KLIPS_PRINT(debug_mast & DB_MAST_REVEC,
+                           "klips_debug:ipsec_mast_set_mac_address: "
+                           "no device...");
+               return -ENODEV;
+       }
+
+       if(prv == NULL) {
+               KLIPS_PRINT(debug_mast & DB_MAST_REVEC,
+                           "klips_debug:ipsec_mast_set_mac_address: "
+                           "no private space associated with dev=%s",
+                           dev->name ? dev->name : "NULL");
+               return -ENODEV;
+       }
+
+       stats = (struct net_device_stats *) &(prv->mystats);
+
+       if(prv->dev == NULL) {
+               KLIPS_PRINT(debug_mast & DB_MAST_REVEC,
+                           "klips_debug:ipsec_mast_set_mac_address: "
+                           "no physical device associated with dev=%s",
+                           dev->name ? dev->name : "NULL");
+               stats->tx_dropped++;
+               return -ENODEV;
+       }
+
+       if(!prv->set_mac_address) {
+               KLIPS_PRINT(debug_mast & DB_MAST_REVEC,
+                           "klips_debug:ipsec_mast_set_mac_address: "
+                           "physical device has been detached, cannot set - skb->dev=%s->NULL\n",
+                           dev->name);
+               return -ENODEV;
+       }
+
+       KLIPS_PRINT(debug_mast & DB_MAST_REVEC,
+                   "klips_debug:ipsec_mast_set_mac_address: "
+                   "Revectored dev=%s->%s addr=0p%p\n",
+                   dev->name, prv->dev->name, addr);
+       return prv->set_mac_address(prv->dev, addr);
+
+}
+
+DEBUG_NO_STATIC void
+ipsec_mast_cache_update(struct hh_cache *hh, struct net_device *dev, unsigned char *  haddr)
+{
+       struct ipsecpriv *prv = dev->priv;
+       
+       struct net_device_stats *stats; /* This device's statistics */
+       
+       if(dev == NULL) {
+               KLIPS_PRINT(debug_mast & DB_MAST_REVEC,
+                           "klips_debug:ipsec_mast_cache_update: "
+                           "no device...");
+               return;
+       }
+
+       if(prv == NULL) {
+               KLIPS_PRINT(debug_mast & DB_MAST_REVEC,
+                           "klips_debug:ipsec_mast_cache_update: "
+                           "no private space associated with dev=%s",
+                           dev->name ? dev->name : "NULL");
+               return;
+       }
+
+       stats = (struct net_device_stats *) &(prv->mystats);
+
+       if(prv->dev == NULL) {
+               KLIPS_PRINT(debug_mast & DB_MAST_REVEC,
+                           "klips_debug:ipsec_mast_cache_update: "
+                           "no physical device associated with dev=%s",
+                           dev->name ? dev->name : "NULL");
+               stats->tx_dropped++;
+               return;
+       }
+
+       if(!prv->header_cache_update) {
+               KLIPS_PRINT(debug_mast & DB_MAST_REVEC,
+                           "klips_debug:ipsec_mast_cache_update: "
+                           "physical device has been detached, cannot set - skb->dev=%s->NULL\n",
+                           dev->name);
+               return;
+       }
+
+       KLIPS_PRINT(debug_mast & DB_MAST_REVEC,
+                   "klips_debug:ipsec_mast: "
+                   "Revectored cache_update\n");
+       prv->header_cache_update(hh, prv->dev, haddr);
+       return;
+}
+
+DEBUG_NO_STATIC int
+ipsec_mast_neigh_setup(struct neighbour *n)
+{
+       KLIPS_PRINT(debug_mast & DB_MAST_REVEC,
+                   "klips_debug:ipsec_mast_neigh_setup:\n");
+
+        if (n->nud_state == NUD_NONE) {
+                n->ops = &arp_broken_ops;
+                n->output = n->ops->output;
+        }
+        return 0;
+}
+
+DEBUG_NO_STATIC int
+ipsec_mast_neigh_setup_dev(struct net_device *dev, struct neigh_parms *p)
+{
+       KLIPS_PRINT(debug_mast & DB_MAST_REVEC,
+                   "klips_debug:ipsec_mast_neigh_setup_dev: "
+                   "setting up %s\n",
+                   dev ? dev->name : "NULL");
+
+        if (p->tbl->family == AF_INET) {
+                p->neigh_setup = ipsec_mast_neigh_setup;
+                p->ucast_probes = 0;
+                p->mcast_probes = 0;
+        }
+        return 0;
+}
+
+/*
+ * We call the attach routine to attach another device.
+ */
+
+DEBUG_NO_STATIC int
+ipsec_mast_attach(struct net_device *dev, struct net_device *physdev)
+{
+        int i;
+       struct ipsecpriv *prv = dev->priv;
+
+       if(dev == NULL) {
+               KLIPS_PRINT(debug_mast & DB_MAST_REVEC,
+                           "klips_debug:ipsec_mast_attach: "
+                           "no device...");
+               return -ENODEV;
+       }
+
+       if(prv == NULL) {
+               KLIPS_PRINT(debug_mast & DB_MAST_REVEC,
+                           "klips_debug:ipsec_mast_attach: "
+                           "no private space associated with dev=%s",
+                           dev->name ? dev->name : "NULL");
+               return -ENODATA;
+       }
+
+       prv->dev = physdev;
+       prv->hard_start_xmit = physdev->hard_start_xmit;
+       prv->get_stats = physdev->get_stats;
+
+       if (physdev->hard_header) {
+               prv->hard_header = physdev->hard_header;
+               dev->hard_header = ipsec_mast_hard_header;
+       } else
+               dev->hard_header = NULL;
+       
+       if (physdev->rebuild_header) {
+               prv->rebuild_header = physdev->rebuild_header;
+               dev->rebuild_header = ipsec_mast_rebuild_header;
+       } else
+               dev->rebuild_header = NULL;
+       
+       if (physdev->set_mac_address) {
+               prv->set_mac_address = physdev->set_mac_address;
+               dev->set_mac_address = ipsec_mast_set_mac_address;
+       } else
+               dev->set_mac_address = NULL;
+       
+       if (physdev->header_cache_update) {
+               prv->header_cache_update = physdev->header_cache_update;
+               dev->header_cache_update = ipsec_mast_cache_update;
+       } else
+               dev->header_cache_update = NULL;
+
+       dev->hard_header_len = physdev->hard_header_len;
+
+/*     prv->neigh_setup        = physdev->neigh_setup; */
+       dev->neigh_setup        = ipsec_mast_neigh_setup_dev;
+       dev->mtu = 16260; /* 0xfff0; */ /* dev->mtu; */
+       prv->mtu = physdev->mtu;
+
+#ifdef PHYSDEV_TYPE
+       dev->type = physdev->type; /* ARPHRD_MAST; */
+#endif /*  PHYSDEV_TYPE */
+
+       dev->addr_len = physdev->addr_len;
+       for (i=0; i<dev->addr_len; i++) {
+               dev->dev_addr[i] = physdev->dev_addr[i];
+       }
+#ifdef CONFIG_KLIPS_DEBUG
+       if(debug_mast & DB_MAST_INIT) {
+               printk(KERN_INFO "klips_debug:ipsec_mast_attach: "
+                      "physical device %s being attached has HW address: %2x",
+                      physdev->name, physdev->dev_addr[0]);
+               for (i=1; i < physdev->addr_len; i++) {
+                       printk(":%02x", physdev->dev_addr[i]);
+               }
+               printk("\n");
+       }
+#endif /* CONFIG_KLIPS_DEBUG */
+
+       return 0;
+}
+
+/*
+ * We call the detach routine to detach the ipsec mast from another device.
+ */
+
+DEBUG_NO_STATIC int
+ipsec_mast_detach(struct net_device *dev)
+{
+        int i;
+       struct ipsecpriv *prv = dev->priv;
+
+       if(dev == NULL) {
+               KLIPS_PRINT(debug_mast & DB_MAST_REVEC,
+                           "klips_debug:ipsec_mast_detach: "
+                           "no device...");
+               return -ENODEV;
+       }
+
+       if(prv == NULL) {
+               KLIPS_PRINT(debug_mast & DB_MAST_REVEC,
+                           "klips_debug:ipsec_mast_detach: "
+                           "no private space associated with dev=%s",
+                           dev->name ? dev->name : "NULL");
+               return -ENODATA;
+       }
+
+       KLIPS_PRINT(debug_mast & DB_MAST_INIT,
+                   "klips_debug:ipsec_mast_detach: "
+                   "physical device %s being detached from virtual device %s\n",
+                   prv->dev ? prv->dev->name : "NULL",
+                   dev->name);
+
+       prv->dev = NULL;
+       prv->hard_start_xmit = NULL;
+       prv->get_stats = NULL;
+
+       prv->hard_header = NULL;
+#ifdef DETACH_AND_DOWN
+       dev->hard_header = NULL;
+#endif /* DETACH_AND_DOWN */
+       
+       prv->rebuild_header = NULL;
+#ifdef DETACH_AND_DOWN
+       dev->rebuild_header = NULL;
+#endif /* DETACH_AND_DOWN */
+       
+       prv->set_mac_address = NULL;
+#ifdef DETACH_AND_DOWN
+       dev->set_mac_address = NULL;
+#endif /* DETACH_AND_DOWN */
+       
+       prv->header_cache_update = NULL;
+#ifdef DETACH_AND_DOWN
+       dev->header_cache_update = NULL;
+#endif /* DETACH_AND_DOWN */
+
+#ifdef DETACH_AND_DOWN
+       dev->neigh_setup        = NULL;
+#endif /* DETACH_AND_DOWN */
+
+       dev->hard_header_len = 0;
+#ifdef DETACH_AND_DOWN
+       dev->mtu = 0;
+#endif /* DETACH_AND_DOWN */
+       prv->mtu = 0;
+       for (i=0; i<MAX_ADDR_LEN; i++) {
+               dev->dev_addr[i] = 0;
+       }
+       dev->addr_len = 0;
+#ifdef PHYSDEV_TYPE
+       dev->type = ARPHRD_VOID; /* ARPHRD_MAST; */
+#endif /*  PHYSDEV_TYPE */
+       
+       return 0;
+}
+
+/*
+ * We call the clear routine to detach all ipsec masts from other devices.
+ */
+DEBUG_NO_STATIC int
+ipsec_mast_clear(void)
+{
+       int i;
+       struct net_device *ipsecdev = NULL, *prvdev;
+       struct ipsecpriv *prv;
+       char name[9];
+       int ret;
+
+       KLIPS_PRINT(debug_mast & DB_MAST_INIT,
+                   "klips_debug:ipsec_mast_clear: .\n");
+
+       for(i = 0; i < IPSEC_NUM_IF; i++) {
+               sprintf(name, IPSEC_DEV_FORMAT, i);
+               if((ipsecdev = ipsec_dev_get(name)) != NULL) {
+                       if((prv = (struct ipsecpriv *)(ipsecdev->priv))) {
+                               prvdev = (struct net_device *)(prv->dev);
+                               if(prvdev) {
+                                       KLIPS_PRINT(debug_mast & DB_MAST_INIT,
+                                                   "klips_debug:ipsec_mast_clear: "
+                                                   "physical device for device %s is %s\n",
+                                                   name, prvdev->name);
+                                       if((ret = ipsec_mast_detach(ipsecdev))) {
+                                               KLIPS_PRINT(debug_mast & DB_MAST_INIT,
+                                                           "klips_debug:ipsec_mast_clear: "
+                                                           "error %d detatching device %s from device %s.\n",
+                                                           ret, name, prvdev->name);
+                                               return ret;
+                                       }
+                               }
+                       }
+               }
+       }
+       return 0;
+}
+
+DEBUG_NO_STATIC int
+ipsec_mast_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+{
+       struct ipsecmastconf *cf = (struct ipsecmastconf *)&ifr->ifr_data;
+       struct ipsecpriv *prv = dev->priv;
+       struct net_device *them; /* physical device */
+#ifdef CONFIG_IP_ALIAS
+       char *colon;
+       char realphysname[IFNAMSIZ];
+#endif /* CONFIG_IP_ALIAS */
+       
+       if(dev == NULL) {
+               KLIPS_PRINT(debug_mast & DB_MAST_INIT,
+                           "klips_debug:ipsec_mast_ioctl: "
+                           "device not supplied.\n");
+               return -ENODEV;
+       }
+
+       KLIPS_PRINT(debug_mast & DB_MAST_INIT,
+                   "klips_debug:ipsec_mast_ioctl: "
+                   "tncfg service call #%d for dev=%s\n",
+                   cmd,
+                   dev->name ? dev->name : "NULL");
+       switch (cmd) {
+       /* attach a virtual ipsec? device to a physical device */
+       case IPSEC_SET_DEV:
+               KLIPS_PRINT(debug_mast & DB_MAST_INIT,
+                           "klips_debug:ipsec_mast_ioctl: "
+                           "calling ipsec_mast_attatch...\n");
+#ifdef CONFIG_IP_ALIAS
+               /* If this is an IP alias interface, get its real physical name */
+               strncpy(realphysname, cf->cf_name, IFNAMSIZ);
+               realphysname[IFNAMSIZ-1] = 0;
+               colon = strchr(realphysname, ':');
+               if (colon) *colon = 0;
+               them = ipsec_dev_get(realphysname);
+#else /* CONFIG_IP_ALIAS */
+               them = ipsec_dev_get(cf->cf_name);
+#endif /* CONFIG_IP_ALIAS */
+
+               if (them == NULL) {
+                       KLIPS_PRINT(debug_mast & DB_MAST_INIT,
+                                   "klips_debug:ipsec_mast_ioctl: "
+                                   "physical device %s requested is null\n",
+                                   cf->cf_name);
+                       return -ENXIO;
+               }
+               
+#if 0
+               if (them->flags & IFF_UP) {
+                       KLIPS_PRINT(debug_mast & DB_MAST_INIT,
+                                   "klips_debug:ipsec_mast_ioctl: "
+                                   "physical device %s requested is not up.\n",
+                                   cf->cf_name);
+                       return -ENXIO;
+               }
+#endif
+               
+               if (prv && prv->dev) {
+                       KLIPS_PRINT(debug_mast & DB_MAST_INIT,
+                                   "klips_debug:ipsec_mast_ioctl: "
+                                   "virtual device is already connected to %s.\n",
+                                   prv->dev->name ? prv->dev->name : "NULL");
+                       return -EBUSY;
+               }
+               return ipsec_mast_attach(dev, them);
+
+       case IPSEC_DEL_DEV:
+               KLIPS_PRINT(debug_mast & DB_MAST_INIT,
+                           "klips_debug:ipsec_mast_ioctl: "
+                           "calling ipsec_mast_detatch.\n");
+               if (! prv->dev) {
+                       KLIPS_PRINT(debug_mast & DB_MAST_INIT,
+                                   "klips_debug:ipsec_mast_ioctl: "
+                                   "physical device not connected.\n");
+                       return -ENODEV;
+               }
+               return ipsec_mast_detach(dev);
+              
+       case IPSEC_CLR_DEV:
+               KLIPS_PRINT(debug_mast & DB_MAST_INIT,
+                           "klips_debug:ipsec_mast_ioctl: "
+                           "calling ipsec_mast_clear.\n");
+               return ipsec_mast_clear();
+
+       default:
+               KLIPS_PRINT(debug_mast & DB_MAST_INIT,
+                           "klips_debug:ipsec_mast_ioctl: "
+                           "unknown command %d.\n",
+                           cmd);
+               return -EOPNOTSUPP;
+       }
+}
+
+int
+ipsec_mast_device_event(struct notifier_block *unused, unsigned long event, void *ptr)
+{
+       struct net_device *dev = ptr;
+       struct net_device *ipsec_dev;
+       struct ipsecpriv *priv;
+       char name[9];
+       int i;
+
+       if (dev == NULL) {
+               KLIPS_PRINT(debug_mast & DB_MAST_INIT,
+                           "klips_debug:ipsec_mast_device_event: "
+                           "dev=NULL for event type %ld.\n",
+                           event);
+               return(NOTIFY_DONE);
+       }
+
+       /* check for loopback devices */
+       if (dev && (dev->flags & IFF_LOOPBACK)) {
+               return(NOTIFY_DONE);
+       }
+
+       switch (event) {
+       case NETDEV_DOWN:
+               /* look very carefully at the scope of these compiler
+                  directives before changing anything... -- RGB */
+
+       case NETDEV_UNREGISTER:
+               switch (event) {
+               case NETDEV_DOWN:
+                       KLIPS_PRINT(debug_mast & DB_MAST_INIT,
+                                   "klips_debug:ipsec_mast_device_event: "
+                                   "NETDEV_DOWN dev=%s flags=%x\n",
+                                   dev->name,
+                                   dev->flags);
+                       if(strncmp(dev->name, "ipsec", strlen("ipsec")) == 0) {
+                               printk(KERN_CRIT "IPSEC EVENT: KLIPS device %s shut down.\n",
+                                      dev->name);
+                       }
+                       break;
+               case NETDEV_UNREGISTER:
+                       KLIPS_PRINT(debug_mast & DB_MAST_INIT,
+                                   "klips_debug:ipsec_mast_device_event: "
+                                   "NETDEV_UNREGISTER dev=%s flags=%x\n",
+                                   dev->name,
+                                   dev->flags);
+                       break;
+               }
+               
+               /* find the attached physical device and detach it. */
+               for(i = 0; i < IPSEC_NUM_IF; i++) {
+                       sprintf(name, IPSEC_DEV_FORMAT, i);
+                       ipsec_dev = ipsec_dev_get(name);
+                       if(ipsec_dev) {
+                               priv = (struct ipsecpriv *)(ipsec_dev->priv);
+                               if(priv) {
+                                       ;
+                                       if(((struct net_device *)(priv->dev)) == dev) {
+                                               /* dev_close(ipsec_dev); */
+                                               /* return */ ipsec_mast_detach(ipsec_dev);
+                                               KLIPS_PRINT(debug_mast & DB_MAST_INIT,
+                                                           "klips_debug:ipsec_mast_device_event: "
+                                                           "device '%s' has been detached.\n",
+                                                           ipsec_dev->name);
+                                               break;
+                                       }
+                               } else {
+                                       KLIPS_PRINT(debug_mast & DB_MAST_INIT,
+                                                   "klips_debug:ipsec_mast_device_event: "
+                                                   "device '%s' has no private data space!\n",
+                                                   ipsec_dev->name);
+                               }
+                       }
+               }
+               break;
+       case NETDEV_UP:
+               KLIPS_PRINT(debug_mast & DB_MAST_INIT,
+                           "klips_debug:ipsec_mast_device_event: "
+                           "NETDEV_UP dev=%s\n",
+                           dev->name);
+               break;
+       case NETDEV_REBOOT:
+               KLIPS_PRINT(debug_mast & DB_MAST_INIT,
+                           "klips_debug:ipsec_mast_device_event: "
+                           "NETDEV_REBOOT dev=%s\n",
+                           dev->name);
+               break;
+       case NETDEV_CHANGE:
+               KLIPS_PRINT(debug_mast & DB_MAST_INIT,
+                           "klips_debug:ipsec_mast_device_event: "
+                           "NETDEV_CHANGE dev=%s flags=%x\n",
+                           dev->name,
+                           dev->flags);
+               break;
+       case NETDEV_REGISTER:
+               KLIPS_PRINT(debug_mast & DB_MAST_INIT,
+                           "klips_debug:ipsec_mast_device_event: "
+                           "NETDEV_REGISTER dev=%s\n",
+                           dev->name);
+               break;
+       case NETDEV_CHANGEMTU:
+               KLIPS_PRINT(debug_mast & DB_MAST_INIT,
+                           "klips_debug:ipsec_mast_device_event: "
+                           "NETDEV_CHANGEMTU dev=%s to mtu=%d\n",
+                           dev->name,
+                           dev->mtu);
+               break;
+       case NETDEV_CHANGEADDR:
+               KLIPS_PRINT(debug_mast & DB_MAST_INIT,
+                           "klips_debug:ipsec_mast_device_event: "
+                           "NETDEV_CHANGEADDR dev=%s\n",
+                           dev->name);
+               break;
+       case NETDEV_GOING_DOWN:
+               KLIPS_PRINT(debug_mast & DB_MAST_INIT,
+                           "klips_debug:ipsec_mast_device_event: "
+                           "NETDEV_GOING_DOWN dev=%s\n",
+                           dev->name);
+               break;
+       case NETDEV_CHANGENAME:
+               KLIPS_PRINT(debug_mast & DB_MAST_INIT,
+                           "klips_debug:ipsec_mast_device_event: "
+                           "NETDEV_CHANGENAME dev=%s\n",
+                           dev->name);
+               break;
+       default:
+               KLIPS_PRINT(debug_mast & DB_MAST_INIT,
+                           "klips_debug:ipsec_mast_device_event: "
+                           "event type %ld unrecognised for dev=%s\n",
+                           event,
+                           dev->name);
+               break;
+       }
+       return NOTIFY_DONE;
+}
+
+/*
+ *     Called when an ipsec mast device is initialized.
+ *     The ipsec mast device structure is passed to us.
+ */
+ 
+int
+ipsec_mast_init(struct net_device *dev)
+{
+       int i;
+
+       KLIPS_PRINT(debug_mast,
+                   "klips_debug:ipsec_mast_init: "
+                   "allocating %lu bytes initialising device: %s\n",
+                   (unsigned long) sizeof(struct ipsecpriv),
+                   dev->name ? dev->name : "NULL");
+
+       /* Add our mast functions to the device */
+       dev->open               = ipsec_mast_open;
+       dev->stop               = ipsec_mast_close;
+       dev->hard_start_xmit    = ipsec_mast_start_xmit;
+       dev->get_stats          = ipsec_mast_get_stats;
+
+       dev->priv = kmalloc(sizeof(struct ipsecpriv), GFP_KERNEL);
+       if (dev->priv == NULL)
+               return -ENOMEM;
+       memset((caddr_t)(dev->priv), 0, sizeof(struct ipsecpriv));
+
+       for(i = 0; i < sizeof(zeroes); i++) {
+               ((__u8*)(zeroes))[i] = 0;
+       }
+       
+       dev->set_multicast_list = NULL;
+       dev->do_ioctl           = ipsec_mast_ioctl;
+       dev->hard_header        = NULL;
+       dev->rebuild_header     = NULL;
+       dev->set_mac_address    = NULL;
+       dev->header_cache_update= NULL;
+       dev->neigh_setup        = ipsec_mast_neigh_setup_dev;
+       dev->hard_header_len    = 0;
+       dev->mtu                = 0;
+       dev->addr_len           = 0;
+       dev->type               = ARPHRD_VOID; /* ARPHRD_MAST; */ /* ARPHRD_ETHER; */
+       dev->tx_queue_len       = 10;           /* Small queue */
+       memset((caddr_t)(dev->broadcast),0xFF, ETH_ALEN);       /* what if this is not attached to ethernet? */
+
+       /* New-style flags. */
+       dev->flags              = IFF_NOARP /* 0 */ /* Petr Novak */;
+       dev_init_buffers(dev);
+
+       /* We're done.  Have I forgotten anything? */
+       return 0;
+}
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+/*  Module specific interface (but it links with the rest of IPSEC)  */
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+int
+ipsec_mast_probe(struct net_device *dev)
+{
+       ipsec_mast_init(dev); 
+       return 0;
+}
+
+int 
+ipsec_mast_init_devices(void)
+{
+       return 0;
+}
+
+/* void */
+int
+ipsec_mast_cleanup_devices(void)
+{
+       int error = 0;
+       int i;
+       char name[10];
+       struct net_device *dev_mast;
+       
+       for(i = 0; i < ipsec_mastdevice_count; i++) {
+               sprintf(name, MAST_DEV_FORMAT, i);
+               if((dev_mast = ipsec_dev_get(name)) == NULL) {
+                       break;
+               }
+               unregister_netdev(dev_mast);
+               kfree(dev_mast->priv);
+               dev_mast->priv=NULL;
+       }
+       return error;
+}
+
+/*
+ * $Log: ipsec_mast.c,v $
+ * Revision 1.7.2.1  2006-10-06 21:39:26  paul
+ * Fix for 2.6.18+ only include linux/config.h if AUTOCONF_INCLUDED is not
+ * set. This is defined through autoconf.h which is included through the
+ * linux kernel build macros.
+ *
+ * Revision 1.7  2005/04/29 05:10:22  mcr
+ *     removed from extraenous includes to make unit testing easier.
+ *
+ * Revision 1.6  2004/12/03 21:25:57  mcr
+ *     compile time fixes for running on 2.6.
+ *     still experimental.
+ *
+ * Revision 1.5  2004/08/03 18:19:08  mcr
+ *     in 2.6, use "net_device" instead of #define device->net_device.
+ *     this probably breaks 2.0 compiles.
+ *
+ * Revision 1.4  2004/07/10 19:11:18  mcr
+ *     CONFIG_IPSEC -> CONFIG_KLIPS.
+ *
+ * Revision 1.3  2003/10/31 02:27:55  mcr
+ *     pulled up port-selector patches and sa_id elimination.
+ *
+ * Revision 1.2.4.1  2003/10/29 01:30:41  mcr
+ *     elimited "struct sa_id".
+ *
+ * Revision 1.2  2003/06/22 20:06:17  mcr
+ *     refactored mast code still had lots of ipsecX junk in it.
+ *
+ * Revision 1.1  2003/02/12 19:31:12  rgb
+ * Refactored from ipsec_tunnel.c
+ *
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/ipsec_md5c.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,453 @@
+/*
+ * RCSID $Id: ipsec_md5c.c,v 1.10 2005-04-15 01:25:57 mcr Exp $
+ */
+
+/*
+ * The rest of the code is derived from MD5C.C by RSADSI. Minor cosmetic
+ * changes to accomodate it in the kernel by ji.
+ */
+
+#include <asm/byteorder.h>
+#include <linux/string.h>
+
+#include "openswan/ipsec_md5h.h"
+
+/* MD5C.C - RSA Data Security, Inc., MD5 message-digest algorithm
+ */
+
+/* Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All
+rights reserved.
+
+License to copy and use this software is granted provided that it
+is identified as the "RSA Data Security, Inc. MD5 Message-Digest
+Algorithm" in all material mentioning or referencing this software
+or this function.
+
+License is also granted to make and use derivative works provided
+that such works are identified as "derived from the RSA Data
+Security, Inc. MD5 Message-Digest Algorithm" in all material
+mentioning or referencing the derived work.
+
+RSA Data Security, Inc. makes no representations concerning either
+the merchantability of this software or the suitability of this
+software for any particular purpose. It is provided "as is"
+without express or implied warranty of any kind.
+
+These notices must be retained in any copies of any part of this
+documentation and/or software.
+ */
+
+/*
+ * Additions by JI
+ * 
+ * HAVEMEMCOPY is defined if mem* routines are available
+ *
+ * HAVEHTON is defined if htons() and htonl() can be used
+ * for big/little endian conversions
+ *
+ */
+
+#define HAVEMEMCOPY
+#ifdef __LITTLE_ENDIAN
+#define LITTLENDIAN
+#endif
+#ifdef __BIG_ENDIAN
+#define BIGENDIAN
+#endif
+
+/* Constants for MD5Transform routine.
+ */
+
+#define S11 7
+#define S12 12
+#define S13 17
+#define S14 22
+#define S21 5
+#define S22 9
+#define S23 14
+#define S24 20
+#define S31 4
+#define S32 11
+#define S33 16
+#define S34 23
+#define S41 6
+#define S42 10
+#define S43 15
+#define S44 21
+
+static void MD5Transform PROTO_LIST ((UINT4 [4], unsigned char [64]));
+
+#ifdef LITTLEENDIAN
+#define Encode MD5_memcpy
+#define Decode MD5_memcpy
+#else
+static void Encode PROTO_LIST
+  ((unsigned char *, UINT4 *, unsigned int));
+static void Decode PROTO_LIST
+  ((UINT4 *, unsigned char *, unsigned int));
+#endif
+
+#ifdef HAVEMEMCOPY
+/* no need to include <memory.h> here; <linux/string.h> defines these */
+#define MD5_memcpy     memcpy
+#define MD5_memset     memset
+#else
+#ifdef HAVEBCOPY
+#define MD5_memcpy(_a,_b,_c) bcopy((_b),(_a),(_c))
+#define MD5_memset(_a,_b,_c) bzero((_a),(_c))
+#else
+static void MD5_memcpy PROTO_LIST ((POINTER, POINTER, unsigned int));
+static void MD5_memset PROTO_LIST ((POINTER, int, unsigned int));
+#endif
+#endif
+static unsigned char PADDING[64] = {
+  0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
+};
+
+/* F, G, H and I are basic MD5 functions.
+ */
+#define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
+#define G(x, y, z) (((x) & (z)) | ((y) & (~z)))
+#define H(x, y, z) ((x) ^ (y) ^ (z))
+#define I(x, y, z) ((y) ^ ((x) | (~z)))
+
+/* ROTATE_LEFT rotates x left n bits.
+ */
+#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
+
+/* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4.
+Rotation is separate from addition to prevent recomputation.
+ */
+#define FF(a, b, c, d, x, s, ac) { \
+ (a) += F ((b), (c), (d)) + (x) + (UINT4)(ac); \
+ (a) = ROTATE_LEFT ((a), (s)); \
+ (a) += (b); \
+  }
+#define GG(a, b, c, d, x, s, ac) { \
+ (a) += G ((b), (c), (d)) + (x) + (UINT4)(ac); \
+ (a) = ROTATE_LEFT ((a), (s)); \
+ (a) += (b); \
+  }
+#define HH(a, b, c, d, x, s, ac) { \
+ (a) += H ((b), (c), (d)) + (x) + (UINT4)(ac); \
+ (a) = ROTATE_LEFT ((a), (s)); \
+ (a) += (b); \
+  }
+#define II(a, b, c, d, x, s, ac) { \
+ (a) += I ((b), (c), (d)) + (x) + (UINT4)(ac); \
+ (a) = ROTATE_LEFT ((a), (s)); \
+ (a) += (b); \
+  }
+
+/*
+ * MD5 initialization. Begins an MD5 operation, writing a new context.
+ */
+void osMD5Init(void *vcontext)
+{
+  MD5_CTX *context = vcontext;                                     
+
+  context->count[0] = context->count[1] = 0;
+  /* Load magic initialization constants.*/
+  context->state[0] = 0x67452301;
+  context->state[1] = 0xefcdab89;
+  context->state[2] = 0x98badcfe;
+  context->state[3] = 0x10325476;
+}
+
+/* MD5 block update operation. Continues an MD5 message-digest
+  operation, processing another message block, and updating the
+  context.
+ */
+void osMD5Update (vcontext, input, inputLen)
+     void *vcontext;
+     unsigned char *input;                                /* input block */
+     __u32 inputLen;                     /* length of input block */
+{
+  MD5_CTX *context = vcontext;                                     
+  __u32 i;
+  unsigned int index, partLen;
+
+  /* Compute number of bytes mod 64 */
+  index = (unsigned int)((context->count[0] >> 3) & 0x3F);
+
+  /* Update number of bits */
+  if ((context->count[0] += ((UINT4)inputLen << 3))
+   < ((UINT4)inputLen << 3))
+ context->count[1]++;
+  context->count[1] += ((UINT4)inputLen >> 29);
+
+  partLen = 64 - index;
+
+  /* Transform as many times as possible.
+*/
+  if (inputLen >= partLen) {
+ MD5_memcpy
+   ((POINTER)&context->buffer[index], (POINTER)input, partLen);
+ MD5Transform (context->state, context->buffer);
+
+ for (i = partLen; i + 63 < inputLen; i += 64)
+   MD5Transform (context->state, &input[i]);
+
+ index = 0;
+  }
+  else
+ i = 0;
+
+  /* Buffer remaining input */
+  MD5_memcpy
+ ((POINTER)&context->buffer[index], (POINTER)&input[i],
+  inputLen-i);
+}
+
+/* MD5 finalization. Ends an MD5 message-digest operation, writing the
+  the message digest and zeroizing the context.
+ */
+void osMD5Final (digest, vcontext)
+unsigned char digest[16];                         /* message digest */
+void *vcontext;                                       /* context */
+{
+  MD5_CTX *context = vcontext;                                     
+  unsigned char bits[8];
+  unsigned int index, padLen;
+
+  /* Save number of bits */
+  Encode (bits, context->count, 8);
+
+  /* Pad out to 56 mod 64.
+*/
+  index = (unsigned int)((context->count[0] >> 3) & 0x3f);
+  padLen = (index < 56) ? (56 - index) : (120 - index);
+  osMD5Update (context, PADDING, padLen);
+
+  /* Append length (before padding) */
+  osMD5Update (context, bits, 8);
+
+  if (digest != NULL)                  /* Bill Simpson's padding */
+  {
+         /* store state in digest */
+         Encode (digest, context->state, 16);
+
+         /* Zeroize sensitive information.
+          */
+         MD5_memset ((POINTER)context, 0, sizeof (*context));
+  }
+}
+
+/* MD5 basic transformation. Transforms state based on block.
+ */
+static void MD5Transform (state, block)
+UINT4 state[4];
+unsigned char block[64];
+{
+  UINT4 a = state[0], b = state[1], c = state[2], d = state[3], x[16];
+
+  Decode (x, block, 64);
+
+  /* Round 1 */
+  FF (a, b, c, d, x[ 0], S11, 0xd76aa478); /* 1 */
+  FF (d, a, b, c, x[ 1], S12, 0xe8c7b756); /* 2 */
+  FF (c, d, a, b, x[ 2], S13, 0x242070db); /* 3 */
+  FF (b, c, d, a, x[ 3], S14, 0xc1bdceee); /* 4 */
+  FF (a, b, c, d, x[ 4], S11, 0xf57c0faf); /* 5 */
+  FF (d, a, b, c, x[ 5], S12, 0x4787c62a); /* 6 */
+  FF (c, d, a, b, x[ 6], S13, 0xa8304613); /* 7 */
+  FF (b, c, d, a, x[ 7], S14, 0xfd469501); /* 8 */
+  FF (a, b, c, d, x[ 8], S11, 0x698098d8); /* 9 */
+  FF (d, a, b, c, x[ 9], S12, 0x8b44f7af); /* 10 */
+  FF (c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */
+  FF (b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */
+  FF (a, b, c, d, x[12], S11, 0x6b901122); /* 13 */
+  FF (d, a, b, c, x[13], S12, 0xfd987193); /* 14 */
+  FF (c, d, a, b, x[14], S13, 0xa679438e); /* 15 */
+  FF (b, c, d, a, x[15], S14, 0x49b40821); /* 16 */
+
+ /* Round 2 */
+  GG (a, b, c, d, x[ 1], S21, 0xf61e2562); /* 17 */
+  GG (d, a, b, c, x[ 6], S22, 0xc040b340); /* 18 */
+  GG (c, d, a, b, x[11], S23, 0x265e5a51); /* 19 */
+  GG (b, c, d, a, x[ 0], S24, 0xe9b6c7aa); /* 20 */
+  GG (a, b, c, d, x[ 5], S21, 0xd62f105d); /* 21 */
+  GG (d, a, b, c, x[10], S22,  0x2441453); /* 22 */
+  GG (c, d, a, b, x[15], S23, 0xd8a1e681); /* 23 */
+  GG (b, c, d, a, x[ 4], S24, 0xe7d3fbc8); /* 24 */
+  GG (a, b, c, d, x[ 9], S21, 0x21e1cde6); /* 25 */
+  GG (d, a, b, c, x[14], S22, 0xc33707d6); /* 26 */
+  GG (c, d, a, b, x[ 3], S23, 0xf4d50d87); /* 27 */
+  GG (b, c, d, a, x[ 8], S24, 0x455a14ed); /* 28 */
+  GG (a, b, c, d, x[13], S21, 0xa9e3e905); /* 29 */
+  GG (d, a, b, c, x[ 2], S22, 0xfcefa3f8); /* 30 */
+  GG (c, d, a, b, x[ 7], S23, 0x676f02d9); /* 31 */
+  GG (b, c, d, a, x[12], S24, 0x8d2a4c8a); /* 32 */
+
+  /* Round 3 */
+  HH (a, b, c, d, x[ 5], S31, 0xfffa3942); /* 33 */
+  HH (d, a, b, c, x[ 8], S32, 0x8771f681); /* 34 */
+  HH (c, d, a, b, x[11], S33, 0x6d9d6122); /* 35 */
+  HH (b, c, d, a, x[14], S34, 0xfde5380c); /* 36 */
+  HH (a, b, c, d, x[ 1], S31, 0xa4beea44); /* 37 */
+  HH (d, a, b, c, x[ 4], S32, 0x4bdecfa9); /* 38 */
+  HH (c, d, a, b, x[ 7], S33, 0xf6bb4b60); /* 39 */
+  HH (b, c, d, a, x[10], S34, 0xbebfbc70); /* 40 */
+  HH (a, b, c, d, x[13], S31, 0x289b7ec6); /* 41 */
+  HH (d, a, b, c, x[ 0], S32, 0xeaa127fa); /* 42 */
+  HH (c, d, a, b, x[ 3], S33, 0xd4ef3085); /* 43 */
+  HH (b, c, d, a, x[ 6], S34,  0x4881d05); /* 44 */
+  HH (a, b, c, d, x[ 9], S31, 0xd9d4d039); /* 45 */
+  HH (d, a, b, c, x[12], S32, 0xe6db99e5); /* 46 */
+  HH (c, d, a, b, x[15], S33, 0x1fa27cf8); /* 47 */
+  HH (b, c, d, a, x[ 2], S34, 0xc4ac5665); /* 48 */
+
+  /* Round 4 */
+  II (a, b, c, d, x[ 0], S41, 0xf4292244); /* 49 */
+  II (d, a, b, c, x[ 7], S42, 0x432aff97); /* 50 */
+  II (c, d, a, b, x[14], S43, 0xab9423a7); /* 51 */
+  II (b, c, d, a, x[ 5], S44, 0xfc93a039); /* 52 */
+  II (a, b, c, d, x[12], S41, 0x655b59c3); /* 53 */
+  II (d, a, b, c, x[ 3], S42, 0x8f0ccc92); /* 54 */
+  II (c, d, a, b, x[10], S43, 0xffeff47d); /* 55 */
+  II (b, c, d, a, x[ 1], S44, 0x85845dd1); /* 56 */
+  II (a, b, c, d, x[ 8], S41, 0x6fa87e4f); /* 57 */
+  II (d, a, b, c, x[15], S42, 0xfe2ce6e0); /* 58 */
+  II (c, d, a, b, x[ 6], S43, 0xa3014314); /* 59 */
+  II (b, c, d, a, x[13], S44, 0x4e0811a1); /* 60 */
+  II (a, b, c, d, x[ 4], S41, 0xf7537e82); /* 61 */
+  II (d, a, b, c, x[11], S42, 0xbd3af235); /* 62 */
+  II (c, d, a, b, x[ 2], S43, 0x2ad7d2bb); /* 63 */
+  II (b, c, d, a, x[ 9], S44, 0xeb86d391); /* 64 */
+
+  state[0] += a;
+  state[1] += b;
+  state[2] += c;
+  state[3] += d;
+
+  /* Zeroize sensitive information.
+*/
+  MD5_memset ((POINTER)x, 0, sizeof (x));
+}
+
+#ifndef LITTLEENDIAN
+
+/* Encodes input (UINT4) into output (unsigned char). Assumes len is
+  a multiple of 4.
+ */
+static void Encode (output, input, len)
+unsigned char *output;
+UINT4 *input;
+unsigned int len;
+{
+  unsigned int i, j;
+
+  for (i = 0, j = 0; j < len; i++, j += 4) {
+ output[j] = (unsigned char)(input[i] & 0xff);
+ output[j+1] = (unsigned char)((input[i] >> 8) & 0xff);
+ output[j+2] = (unsigned char)((input[i] >> 16) & 0xff);
+ output[j+3] = (unsigned char)((input[i] >> 24) & 0xff);
+  }
+}
+
+/* Decodes input (unsigned char) into output (UINT4). Assumes len is
+  a multiple of 4.
+ */
+static void Decode (output, input, len)
+UINT4 *output;
+unsigned char *input;
+unsigned int len;
+{
+  unsigned int i, j;
+
+  for (i = 0, j = 0; j < len; i++, j += 4)
+ output[i] = ((UINT4)input[j]) | (((UINT4)input[j+1]) << 8) |
+   (((UINT4)input[j+2]) << 16) | (((UINT4)input[j+3]) << 24);
+}
+
+#endif
+
+#ifndef HAVEMEMCOPY
+#ifndef HAVEBCOPY
+/* Note: Replace "for loop" with standard memcpy if possible.
+ */
+
+static void MD5_memcpy (output, input, len)
+POINTER output;
+POINTER input;
+unsigned int len;
+{
+  unsigned int i;
+
+  for (i = 0; i < len; i++)
+
+ output[i] = input[i];
+}
+
+/* Note: Replace "for loop" with standard memset if possible.
+ */
+
+static void MD5_memset (output, value, len)
+POINTER output;
+int value;
+unsigned int len;
+{
+  unsigned int i;
+
+  for (i = 0; i < len; i++)
+ ((char *)output)[i] = (char)value;
+}
+#endif
+#endif
+
+/*
+ * $Log: ipsec_md5c.c,v $
+ * Revision 1.10  2005-04-15 01:25:57  mcr
+ *     minor fix to comments.
+ *
+ * Revision 1.9  2004/09/08 17:21:36  ken
+ * Rename MD5* -> osMD5 functions to prevent clashes with other symbols exported by kernel modules (CIFS in 2.6 initiated this)
+ *
+ * Revision 1.8  2004/04/06 02:49:26  mcr
+ *     pullup of algo code from alg-branch.
+ *
+ * Revision 1.7  2002/09/10 01:45:14  mcr
+ *     changed type of MD5_CTX and SHA1_CTX to void * so that
+ *     the function prototypes would match, and could be placed
+ *     into a pointer to a function.
+ *
+ * Revision 1.6  2002/04/24 07:55:32  mcr
+ *     #include patches and Makefiles for post-reorg compilation.
+ *
+ * Revision 1.5  2002/04/24 07:36:28  mcr
+ * Moved from ./klips/net/ipsec/ipsec_md5c.c,v
+ *
+ * Revision 1.4  1999/12/13 13:59:12  rgb
+ * Quick fix to argument size to Update bugs.
+ *
+ * Revision 1.3  1999/05/21 18:09:28  henry
+ * unnecessary <memory.h> include causes trouble in 2.2
+ *
+ * Revision 1.2  1999/04/06 04:54:26  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.1  1998/06/18 21:27:48  henry
+ * move sources from klips/src to klips/net/ipsec, to keep stupid
+ * kernel-build scripts happier in the presence of symlinks
+ *
+ * Revision 1.2  1998/04/23 20:54:02  rgb
+ * Fixed md5 and sha1 include file nesting issues, to be cleaned up when
+ * verified.
+ *
+ * Revision 1.1  1998/04/09 03:06:08  henry
+ * sources moved up from linux/net/ipsec
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:04  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.3  1996/11/20 14:48:53  ji
+ * Release update only.
+ *
+ * Revision 0.2  1996/11/02 00:18:33  ji
+ * First limited release.
+ *
+ *
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/ipsec_proc.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,1206 @@
+/*
+ * @(#) /proc file system interface code.
+ *
+ * Copyright (C) 1996, 1997  John Ioannidis.
+ * Copyright (C) 1998, 1999, 2000, 2001  Richard Guy Briggs <rgb@freeswan.org>
+ *                                 2001  Michael Richardson <mcr@freeswan.org>
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * Split out from ipsec_init.c version 1.70.
+ */
+
+char ipsec_proc_c_version[] = "RCSID $Id: ipsec_proc.c,v 1.39.2.7 2007-11-06 18:24:44 paul Exp $";
+
+
+#ifndef AUTOCONF_INCLUDED
+#include <linux/config.h>
+#endif
+#include <linux/version.h>
+#define __NO_VERSION__
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
+#include <linux/moduleparam.h>
+#endif
+#include <linux/module.h>
+#include <linux/kernel.h> /* printk() */
+#include <linux/ip.h>          /* struct iphdr */
+
+#include "openswan/ipsec_kversion.h"
+#include "openswan/ipsec_param.h"
+
+#ifdef MALLOC_SLAB
+# include <linux/slab.h> /* kmalloc() */
+#else /* MALLOC_SLAB */
+# include <linux/malloc.h> /* kmalloc() */
+#endif /* MALLOC_SLAB */
+#include <linux/errno.h>  /* error codes */
+#include <linux/types.h>  /* size_t */
+#include <linux/interrupt.h> /* mark_bh */
+
+#include <linux/netdevice.h>   /* struct device, and other headers */
+#include <linux/etherdevice.h> /* eth_type_trans */
+#include <linux/in.h>          /* struct sockaddr_in */
+#include <linux/skbuff.h>
+#include <asm/uaccess.h>       /* copy_from_user */
+#include <openswan.h>
+#ifdef SPINLOCK
+#ifdef SPINLOCK_23
+#include <linux/spinlock.h> /* *lock* */
+#else /* SPINLOCK_23 */
+#include <asm/spinlock.h> /* *lock* */
+#endif /* SPINLOCK_23 */
+#endif /* SPINLOCK */
+
+#include <net/ip.h>
+#ifdef CONFIG_PROC_FS
+#include <linux/proc_fs.h>
+#endif /* CONFIG_PROC_FS */
+#ifdef NETLINK_SOCK
+#include <linux/netlink.h>
+#else
+#include <net/netlink.h>
+#endif
+
+#include "openswan/radij.h"
+
+#include "openswan/ipsec_life.h"
+#include "openswan/ipsec_stats.h"
+#include "openswan/ipsec_sa.h"
+
+#include "openswan/ipsec_encap.h"
+#include "openswan/ipsec_radij.h"
+#include "openswan/ipsec_xform.h"
+#include "openswan/ipsec_tunnel.h"
+#include "openswan/ipsec_xmit.h"
+
+#include "openswan/ipsec_rcv.h"
+#include "openswan/ipsec_ah.h"
+#include "openswan/ipsec_esp.h"
+#include "openswan/ipsec_kern24.h"
+
+#ifdef CONFIG_KLIPS_IPCOMP
+#include "openswan/ipcomp.h"
+#endif /* CONFIG_KLIPS_IPCOMP */
+
+#include "openswan/ipsec_proto.h"
+
+#include <pfkeyv2.h>
+#include <pfkey.h>
+
+#ifdef CONFIG_PROC_FS
+
+#ifdef IPSEC_PROC_SUBDIRS
+static struct proc_dir_entry *proc_net_ipsec_dir = NULL;
+static struct proc_dir_entry *proc_eroute_dir    = NULL;
+static struct proc_dir_entry *proc_spi_dir       = NULL;
+static struct proc_dir_entry *proc_spigrp_dir    = NULL;
+static struct proc_dir_entry *proc_birth_dir     = NULL;
+static struct proc_dir_entry *proc_stats_dir     = NULL;
+#endif
+
+struct ipsec_birth_reply ipsec_ipv4_birth_packet;
+struct ipsec_birth_reply ipsec_ipv6_birth_packet;
+
+#ifdef CONFIG_KLIPS_DEBUG
+int debug_esp = 0;
+int debug_ah = 0;
+#endif /* CONFIG_KLIPS_DEBUG */
+
+#define DECREMENT_UNSIGNED(X, amount) ((amount < (X)) ? (X)-amount : 0)
+
+#ifdef CONFIG_KLIPS_ALG
+extern int ipsec_xform_get_info(char *buffer, char **start,
+                               off_t offset, int length IPSEC_PROC_LAST_ARG);
+#endif /* CONFIG_KLIPS_ALG */
+
+
+IPSEC_PROCFS_DEBUG_NO_STATIC
+int
+ipsec_eroute_get_info(char *buffer, 
+                     char **start, 
+                     off_t offset, 
+                     int length        IPSEC_PROC_LAST_ARG)
+{
+       struct wsbuf w = {buffer, length, offset, 0, 0};
+
+#ifdef CONFIG_KLIPS_DEBUG
+       if (debug_radij & DB_RJ_DUMPTREES)
+         rj_dumptrees();                       /* XXXXXXXXX */
+#endif /* CONFIG_KLIPS_DEBUG */
+
+       KLIPS_PRINT(debug_tunnel & DB_TN_PROCFS,
+                   "klips_debug:ipsec_eroute_get_info: "
+                   "buffer=0p%p, *start=0p%p, offset=%d, length=%d\n",
+                   buffer,
+                   *start,
+                   (int)offset,
+                   length);
+
+       spin_lock_bh(&eroute_lock);
+
+       rj_walktree(rnh, ipsec_rj_walker_procprint, &w);
+/*     rj_walktree(mask_rjhead, ipsec_rj_walker_procprint, &w); */
+
+       spin_unlock_bh(&eroute_lock);
+
+       *start = buffer + (offset - w.begin);   /* Start of wanted data */
+       return w.len - (offset - w.begin);
+}
+
+IPSEC_PROCFS_DEBUG_NO_STATIC
+int
+ipsec_spi_get_info(char *buffer,
+                  char **start,
+                  off_t offset,
+                  int length    IPSEC_PROC_LAST_ARG)
+{
+       const int max_content = length > 0? length-1 : 0;
+       int len = 0;
+       off_t begin = 0;
+       int i;
+       struct ipsec_sa *sa_p;
+       char sa[SATOT_BUF];
+       char buf_s[SUBNETTOA_BUF];
+       char buf_d[SUBNETTOA_BUF];
+       size_t sa_len;
+
+       KLIPS_PRINT(debug_tunnel & DB_TN_PROCFS,
+                   "klips_debug:ipsec_spi_get_info: "
+                   "buffer=0p%p, *start=0p%p, offset=%d, length=%d\n",
+                   buffer,
+                   *start,
+                   (int)offset,
+                   length);
+       
+       spin_lock_bh(&tdb_lock);
+
+       for (i = 0; i < SADB_HASHMOD; i++) {
+               for (sa_p = ipsec_sadb_hash[i];
+                    sa_p;
+                    sa_p = sa_p->ips_hnext) {
+                       atomic_inc(&sa_p->ips_refcount);
+                       sa_len = satot(&sa_p->ips_said, 'x', sa, sizeof(sa));
+                       len += ipsec_snprintf(buffer+len, length-len, "%s ",
+                                      sa_len ? sa : " (error)");
+
+                       len += ipsec_snprintf(buffer+len, length-len, "%s%s%s",
+                                      IPS_XFORM_NAME(sa_p));
+
+                       len += ipsec_snprintf(buffer+len, length-len, ": dir=%s",
+                                      (sa_p->ips_flags & EMT_INBOUND) ?
+                                      "in " : "out");
+
+                       if(sa_p->ips_addr_s) {
+                               addrtoa(((struct sockaddr_in*)(sa_p->ips_addr_s))->sin_addr,
+                                       0, buf_s, sizeof(buf_s));
+                               len += ipsec_snprintf(buffer+len, length-len, " src=%s",
+                                              buf_s);
+                       }
+
+                       if((sa_p->ips_said.proto == IPPROTO_IPIP)
+                          && (sa_p->ips_flags & SADB_X_SAFLAGS_INFLOW)) {
+                               subnettoa(sa_p->ips_flow_s.u.v4.sin_addr,
+                                         sa_p->ips_mask_s.u.v4.sin_addr,
+                                         0,
+                                         buf_s,
+                                         sizeof(buf_s));
+
+                               subnettoa(sa_p->ips_flow_d.u.v4.sin_addr,
+                                         sa_p->ips_mask_d.u.v4.sin_addr,
+                                         0,
+                                         buf_d,
+                                         sizeof(buf_d));
+
+                               len += ipsec_snprintf(buffer+len, length-len, " policy=%s->%s",
+                                              buf_s, buf_d);
+                       }
+                       
+                       if(sa_p->ips_iv_bits) {
+                               int j;
+                               len += ipsec_snprintf(buffer+len, length-len, " iv_bits=%dbits iv=0x",
+                                              sa_p->ips_iv_bits);
+
+                               for(j = 0; j < sa_p->ips_iv_bits / 8; j++) {
+                                       len += ipsec_snprintf(buffer+len, length-len, "%02x",
+                                                      (__u32)((__u8*)(sa_p->ips_iv))[j]);
+                               }
+                       }
+
+                       if(sa_p->ips_encalg || sa_p->ips_authalg) {
+                               if(sa_p->ips_replaywin) {
+                                       len += ipsec_snprintf(buffer+len, length-len, " ooowin=%d",
+                                                      sa_p->ips_replaywin);
+                               }
+                               if(sa_p->ips_errs.ips_replaywin_errs) {
+                                       len += ipsec_snprintf(buffer+len, length-len, " ooo_errs=%d",
+                                                      sa_p->ips_errs.ips_replaywin_errs);
+                               }
+                               if(sa_p->ips_replaywin_lastseq) {
+                                       len += ipsec_snprintf(buffer+len, length-len, " seq=%d",
+                                                     sa_p->ips_replaywin_lastseq);
+                               }
+                               if(sa_p->ips_replaywin_bitmap) {
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,0)
+                                       len += ipsec_snprintf(buffer+len, length-len, " bit=0x%Lx",
+                                                      sa_p->ips_replaywin_bitmap);
+#else
+                                       len += ipsec_snprintf(buffer+len, length-len, " bit=0x%x%08x",
+                                                      (__u32)(sa_p->ips_replaywin_bitmap >> 32),
+                                                      (__u32)sa_p->ips_replaywin_bitmap);
+#endif
+                               }
+                               if(sa_p->ips_replaywin_maxdiff) {
+                                       len += ipsec_snprintf(buffer+len, length-len, " max_seq_diff=%d",
+                                                      sa_p->ips_replaywin_maxdiff);
+                               }
+                       }
+                       if(sa_p->ips_flags & ~EMT_INBOUND) {
+                               len += ipsec_snprintf(buffer+len, length-len, " flags=0x%x",
+                                              sa_p->ips_flags & ~EMT_INBOUND);
+                               len += ipsec_snprintf(buffer+len, length-len, "<");
+                               /* flag printing goes here */
+                               len += ipsec_snprintf(buffer+len, length-len, ">");
+                       }
+                       if(sa_p->ips_auth_bits) {
+                               len += ipsec_snprintf(buffer+len, length-len, " alen=%d",
+                                              sa_p->ips_auth_bits);
+                       }
+                       if(sa_p->ips_key_bits_a) {
+                               len += ipsec_snprintf(buffer+len, length-len, " aklen=%d",
+                                              sa_p->ips_key_bits_a);
+                       }
+                       if(sa_p->ips_errs.ips_auth_errs) {
+                               len += ipsec_snprintf(buffer+len, length-len, " auth_errs=%d",
+                                              sa_p->ips_errs.ips_auth_errs);
+                       }
+                       if(sa_p->ips_key_bits_e) {
+                               len += ipsec_snprintf(buffer+len, length-len, " eklen=%d",
+                                              sa_p->ips_key_bits_e);
+                       }
+                       if(sa_p->ips_errs.ips_encsize_errs) {
+                               len += ipsec_snprintf(buffer+len, length-len, " encr_size_errs=%d",
+                                              sa_p->ips_errs.ips_encsize_errs);
+                       }
+                       if(sa_p->ips_errs.ips_encpad_errs) {
+                               len += ipsec_snprintf(buffer+len, length-len, " encr_pad_errs=%d",
+                                              sa_p->ips_errs.ips_encpad_errs);
+                       }
+                       
+                       len += ipsec_snprintf(buffer+len, length-len, " life(c,s,h)=");
+
+                       len += ipsec_lifetime_format(buffer + len,
+                                                    length - len,
+                                                    "alloc", 
+                                                    ipsec_life_countbased,
+                                                    &sa_p->ips_life.ipl_allocations);
+
+                       len += ipsec_lifetime_format(buffer + len,
+                                                    length - len,
+                                                    "bytes",
+                                                    ipsec_life_countbased,
+                                                    &sa_p->ips_life.ipl_bytes);
+
+                       len += ipsec_lifetime_format(buffer + len,
+                                                    length - len,
+                                                    "addtime",
+                                                    ipsec_life_timebased,
+                                                    &sa_p->ips_life.ipl_addtime);
+
+                       len += ipsec_lifetime_format(buffer + len,
+                                                    length - len,
+                                                    "usetime",
+                                                    ipsec_life_timebased,
+                                                    &sa_p->ips_life.ipl_usetime);
+                       
+                       len += ipsec_lifetime_format(buffer + len,
+                                                    length - len,
+                                                    "packets",
+                                                    ipsec_life_countbased,
+                                                    &sa_p->ips_life.ipl_packets);
+                       
+                       if(sa_p->ips_life.ipl_usetime.ipl_last) { /* XXX-MCR should be last? */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,0)
+                               len += ipsec_snprintf(buffer+len, length-len, " idle=%Ld",
+                                              jiffies / HZ - sa_p->ips_life.ipl_usetime.ipl_last);
+#else
+                               len += ipsec_snprintf(buffer+len, length-len, " idle=%lu",
+                                              jiffies / HZ - (unsigned long)sa_p->ips_life.ipl_usetime.ipl_last);
+#endif
+                       }
+
+#ifdef CONFIG_KLIPS_IPCOMP
+                       if(sa_p->ips_said.proto == IPPROTO_COMP &&
+                          (sa_p->ips_comp_ratio_dbytes ||
+                           sa_p->ips_comp_ratio_cbytes)) {
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,3,0)
+                               len += ipsec_snprintf(buffer+len, length-len, " ratio=%Ld:%Ld",
+                                              sa_p->ips_comp_ratio_dbytes,
+                                              sa_p->ips_comp_ratio_cbytes);
+#else
+                               len += ipsec_snprintf(buffer+len, length-len, " ratio=%lu:%lu",
+                                              (unsigned long)sa_p->ips_comp_ratio_dbytes,
+                                              (unsigned long)sa_p->ips_comp_ratio_cbytes);
+#endif
+                       }
+#endif /* CONFIG_KLIPS_IPCOMP */
+
+#ifdef CONFIG_IPSEC_NAT_TRAVERSAL
+                       {
+                               char *natttype_name;
+
+                               switch(sa_p->ips_natt_type)
+                               {
+                               case 0:
+                                       natttype_name="none";
+                                       break;
+                               case ESPINUDP_WITH_NON_IKE:
+                                       natttype_name="nonike";
+                                       break;
+                               case ESPINUDP_WITH_NON_ESP:
+                                       natttype_name="nonesp";
+                                       break;
+                               default:
+                                       natttype_name = "unknown";
+                                       break;
+                               }
+
+                               len += ipsec_snprintf(buffer + len, length-len, " natencap=%s",
+                                              natttype_name);
+                               
+                               len += ipsec_snprintf(buffer + len, length-len, " natsport=%d",
+                                              sa_p->ips_natt_sport);
+                               
+                               len += ipsec_snprintf(buffer + len,length-len, " natdport=%d",
+                                              sa_p->ips_natt_dport);
+                       }
+#else
+                       len += ipsec_snprintf(buffer + len, length-len, " natencap=na");
+#endif /* CONFIG_IPSEC_NAT_TRAVERSAL */
+                               
+                       len += ipsec_snprintf(buffer + len,length-len, " refcount=%d",
+                                      atomic_read(&sa_p->ips_refcount));
+
+                       len += ipsec_snprintf(buffer+len, length-len, " ref=%d",
+                                      sa_p->ips_ref);
+#ifdef CONFIG_KLIPS_DEBUG
+                       if(debug_xform) {
+                       len += ipsec_snprintf(buffer+len, length-len, " reftable=%lu refentry=%lu",
+                                      (unsigned long)IPsecSAref2table(sa_p->ips_ref),
+                                      (unsigned long)IPsecSAref2entry(sa_p->ips_ref));
+                       }
+#endif /* CONFIG_KLIPS_DEBUG */
+
+                       len += ipsec_snprintf(buffer+len, length-len, "\n");
+
+                        atomic_dec(&sa_p->ips_refcount);   
+                       
+                        if (len >= max_content) {
+                               /* we've done all that can fit -- stop loops */
+                               len = max_content;      /* truncate crap */
+                                goto done_spi_i;
+                        } else {
+                               const off_t pos = begin + len;  /* file position of end of what we've generated */
+
+                               if (pos <= offset) {
+                                       /* all is before first interesting character:
+                                        * discard, but note where we are.
+                                        */
+                                       len = 0;
+                                       begin = pos;
+                               }
+                        }
+                }
+        }
+
+done_spi_i:    
+       spin_unlock_bh(&tdb_lock);
+
+       *start = buffer + (offset - begin);     /* Start of wanted data */
+       return len - (offset - begin);
+}
+
+IPSEC_PROCFS_DEBUG_NO_STATIC
+int
+ipsec_spigrp_get_info(char *buffer,
+                     char **start,
+                     off_t offset,
+                     int length     IPSEC_PROC_LAST_ARG)
+{
+       /* Limit of useful snprintf output */
+       const int max_content = length > 0? length-1 : 0; 
+
+       int len = 0;
+       off_t begin = 0;
+       int i;
+       struct ipsec_sa *sa_p, *sa_p2;
+       char sa[SATOT_BUF];
+       size_t sa_len;
+
+       KLIPS_PRINT(debug_tunnel & DB_TN_PROCFS,
+                   "klips_debug:ipsec_spigrp_get_info: "
+                   "buffer=0p%p, *start=0p%p, offset=%d, length=%d\n",
+                   buffer,
+                   *start,
+                   (int)offset,
+                   length);
+
+       spin_lock_bh(&tdb_lock);
+       
+       for (i = 0; i < SADB_HASHMOD; i++) {
+               for (sa_p = ipsec_sadb_hash[i];
+                    sa_p != NULL;
+                    sa_p = sa_p->ips_hnext)
+               {
+                       atomic_inc(&sa_p->ips_refcount);
+                       if(sa_p->ips_inext == NULL) {
+                               sa_p2 = sa_p;
+                               while(sa_p2 != NULL) {
+                                       atomic_inc(&sa_p2->ips_refcount);
+                                       sa_len = satot(&sa_p2->ips_said,
+                                                      'x', sa, sizeof(sa));
+                                       
+                                       len += ipsec_snprintf(buffer+len, length-len, "%s ",
+                                                      sa_len ? sa : " (error)");
+                                       atomic_dec(&sa_p2->ips_refcount);
+                                       sa_p2 = sa_p2->ips_onext;
+                               }
+                               len += ipsec_snprintf(buffer+len, length-len, "\n");
+                       }
+
+                       atomic_dec(&sa_p->ips_refcount);
+                                        
+                       if (len >= max_content) {
+                               /* we've done all that can fit -- stop loops */
+                               len = max_content;      /* truncate crap */
+                               goto done_spigrp_i;
+                       } else {
+                               const off_t pos = begin + len;
+
+                               if (pos <= offset) {
+                                       /* all is before first interesting character:
+                                        * discard, but note where we are.
+                                        */
+                                        len = 0;
+                                        begin = pos;
+                               }
+                       }
+               }
+       }
+
+done_spigrp_i: 
+       spin_unlock_bh(&tdb_lock);
+
+       *start = buffer + (offset - begin);     /* Start of wanted data */
+       return len - (offset - begin);
+}
+
+
+IPSEC_PROCFS_DEBUG_NO_STATIC
+int
+ipsec_tncfg_get_info(char *buffer,
+                    char **start,
+                    off_t offset,
+                    int length     IPSEC_PROC_LAST_ARG)
+{
+       /* limit of useful snprintf output */ 
+       const int max_content = length > 0? length-1 : 0;
+       int len = 0;
+       off_t begin = 0;
+       int i;
+       char name[9];
+       struct net_device *dev, *privdev;
+       struct ipsecpriv *priv;
+
+       KLIPS_PRINT(debug_tunnel & DB_TN_PROCFS,
+                   "klips_debug:ipsec_tncfg_get_info: "
+                   "buffer=0p%p, *start=0p%p, offset=%d, length=%d\n",
+                   buffer,
+                   *start,
+                   (int)offset,
+                   length);
+
+       for(i = 0; i < IPSEC_NUM_IF; i++) {
+               ipsec_snprintf(name, (ssize_t) sizeof(name), IPSEC_DEV_FORMAT, i);
+               dev = __ipsec_dev_get(name);
+               if(dev) {
+                       priv = (struct ipsecpriv *)(dev->priv);
+                       len += ipsec_snprintf(buffer+len, length-len, "%s",
+                                      dev->name);
+                       if(priv) {
+                               privdev = (struct net_device *)(priv->dev);
+                               len += ipsec_snprintf(buffer+len, length-len, " -> %s",
+                                              privdev ? privdev->name : "NULL");
+                               len += ipsec_snprintf(buffer+len, length-len, " mtu=%d(%d) -> %d",
+                                              dev->mtu,
+                                              priv->mtu,
+                                              privdev ? privdev->mtu : 0);
+                       } else {
+                               KLIPS_PRINT(debug_tunnel & DB_TN_PROCFS,
+                                           "klips_debug:ipsec_tncfg_get_info: device '%s' has no private data space!\n",
+                                           dev->name);
+                       }
+                       len += ipsec_snprintf(buffer+len, length-len, "\n");
+
+                        if (len >= max_content) {
+                                /* we've done all that can fit -- stop loop */
+                                len = max_content;      /* truncate crap */
+                                 break;
+                        } else {
+                                const off_t pos = begin + len;
+                                if (pos <= offset) {
+                                        len = 0;
+                                        begin = pos;
+                                }
+                       }
+               }
+       }
+       *start = buffer + (offset - begin);     /* Start of wanted data */
+       len -= (offset - begin);                        /* Start slop */
+       if (len > length)
+               len = length;
+       return len;
+}
+
+IPSEC_PROCFS_DEBUG_NO_STATIC
+int
+ipsec_version_get_info(char *buffer,
+                      char **start,
+                      off_t offset,
+                      int length  IPSEC_PROC_LAST_ARG)
+{
+       int len = 0;
+       off_t begin = 0;
+
+       KLIPS_PRINT(debug_tunnel & DB_TN_PROCFS,
+                   "klips_debug:ipsec_version_get_info: "
+                   "buffer=0p%p, *start=0p%p, offset=%d, length=%d\n",
+                   buffer,
+                   *start,
+                   (int)offset,
+                   length);
+
+       len += ipsec_snprintf(buffer + len,length-len, "Openswan version: %s\n",
+                      ipsec_version_code());
+#if 0
+       KLIPS_PRINT(debug_tunnel & DB_TN_PROCFS,
+                   "klips_debug:ipsec_version_get_info: "
+                   "ipsec_init version: %s\n",
+                   ipsec_init_c_version);
+       KLIPS_PRINT(debug_tunnel & DB_TN_PROCFS,
+                   "klips_debug:ipsec_version_get_info: "
+                   "ipsec_tunnel version: %s\n",
+                   ipsec_tunnel_c_version);
+       KLIPS_PRINT(debug_tunnel & DB_TN_PROCFS,
+                   "klips_debug:ipsec_version_get_info: "
+                   "ipsec_netlink version: %s\n",
+                   ipsec_netlink_c_version);
+       KLIPS_PRINT(debug_tunnel & DB_TN_PROCFS,
+                   "klips_debug:ipsec_version_get_info: "
+                   "radij_c_version: %s\n",
+                   radij_c_version);
+#endif
+
+
+       *start = buffer + (offset - begin);     /* Start of wanted data */
+       len -= (offset - begin);                        /* Start slop */
+       if (len > length)
+               len = length;
+       return len;
+}
+
+#ifdef CONFIG_IPSEC_NAT_TRAVERSAL
+unsigned int natt_available = 1;
+#else
+unsigned int natt_available = 0;
+#endif
+#ifdef module_param
+module_param(natt_available, int, 0444);
+#else
+MODULE_PARM("natt_available","i");
+#endif
+
+IPSEC_PROCFS_DEBUG_NO_STATIC
+int
+ipsec_natt_get_info(char *buffer,
+                    char **start,
+                    off_t offset,
+                    int length  IPSEC_PROC_LAST_ARG)
+{
+        int len = 0;
+        off_t begin = 0;
+
+        len += ipsec_snprintf(buffer + len,
+                              length-len, "%d\n",
+#ifdef CONFIG_IPSEC_NAT_TRAVERSAL
+                              1
+#else
+                              0
+#endif
+                );
+
+        *start = buffer + (offset - begin);     /* Start of wanted data */
+        len -= (offset - begin);                        /* Start slop */
+        if (len > length)
+                len = length;
+        return len;
+}
+
+IPSEC_PROCFS_DEBUG_NO_STATIC
+int
+ipsec_birth_info(char *page,
+                char **start,
+                off_t offset,
+                int count,
+                int *eof,
+                void *data)
+{
+       struct ipsec_birth_reply *ibr = (struct ipsec_birth_reply *)data;
+       int len;
+
+       if(offset >= ibr->packet_template_len) {
+               if(eof) {
+                       *eof=1;
+               }
+               return 0;
+       }
+
+       len = ibr->packet_template_len;
+       len -= offset;
+       if (len > count)
+               len = count;
+
+       memcpy(page + offset, ibr->packet_template+offset, len);
+
+       return len;
+}
+
+IPSEC_PROCFS_DEBUG_NO_STATIC
+int
+ipsec_birth_set(struct file *file, const char *buffer,
+               unsigned long count, void *data)
+{
+       struct ipsec_birth_reply *ibr = (struct ipsec_birth_reply *)data;
+       int len;
+
+       KLIPS_INC_USE;
+        if(count > IPSEC_BIRTH_TEMPLATE_MAXLEN) {
+                len = IPSEC_BIRTH_TEMPLATE_MAXLEN;
+       } else {
+                len = count;
+       }
+
+        if(copy_from_user(ibr->packet_template, buffer, len)) {
+                KLIPS_DEC_USE;
+                return -EFAULT;
+        }
+       ibr->packet_template_len = len;
+
+        KLIPS_DEC_USE;
+
+        return len;
+}
+
+
+#ifdef CONFIG_KLIPS_DEBUG
+IPSEC_PROCFS_DEBUG_NO_STATIC
+int
+ipsec_klipsdebug_get_info(char *buffer,
+                         char **start,
+                         off_t offset,
+                         int length      IPSEC_PROC_LAST_ARG)
+{
+       int len = 0;
+       off_t begin = 0;
+
+       KLIPS_PRINT(debug_tunnel & DB_TN_PROCFS,
+                   "klips_debug:ipsec_klipsdebug_get_info: "
+                   "buffer=0p%p, *start=0p%p, offset=%d, length=%d\n",
+                   buffer,
+                   *start,
+                   (int)offset,
+                   length);
+
+       len += ipsec_snprintf(buffer+len, length-len, "debug_tunnel=%08x.\n", debug_tunnel);
+       len += ipsec_snprintf(buffer+len, length-len, "debug_xform=%08x.\n", debug_xform);
+       len += ipsec_snprintf(buffer+len, length-len, "debug_eroute=%08x.\n", debug_eroute);
+       len += ipsec_snprintf(buffer+len, length-len, "debug_spi=%08x.\n", debug_spi);
+       len += ipsec_snprintf(buffer+len, length-len, "debug_radij=%08x.\n", debug_radij);
+       len += ipsec_snprintf(buffer+len, length-len, "debug_esp=%08x.\n", debug_esp);
+       len += ipsec_snprintf(buffer+len, length-len, "debug_ah=%08x.\n", debug_ah);
+       len += ipsec_snprintf(buffer+len, length-len, "debug_rcv=%08x.\n", debug_rcv);
+       len += ipsec_snprintf(buffer+len, length-len, "debug_pfkey=%08x.\n", debug_pfkey);
+
+       *start = buffer + (offset - begin);     /* Start of wanted data */
+       len -= (offset - begin);                        /* Start slop */
+       if (len > length)
+               len = length;
+       return len;
+}
+#endif /* CONFIG_KLIPS_DEBUG */
+
+IPSEC_PROCFS_DEBUG_NO_STATIC
+int
+ipsec_stats_get_int_info(char *buffer,
+                        char **start,
+                        off_t offset,
+                        int   length,
+                        int   *eof,
+                        void  *data)
+{
+
+       const int max_content = length > 0? length-1 : 0;
+       int len = 0;
+       int *thing;
+
+       thing = (int *)data;
+       
+       len = ipsec_snprintf(buffer+len, length-len, "%08x\n", *thing);
+
+       if (len >= max_content)
+               len = max_content;      /* truncate crap */
+
+        *start = buffer + offset;       /* Start of wanted data */
+        return len > offset? len - offset : 0;
+
+}
+
+#ifndef PROC_FS_2325
+struct proc_dir_entry ipsec_eroute =
+{
+       0,
+       12, "ipsec_eroute",
+       S_IFREG | S_IRUGO, 1, 0, 0, 0,
+       &proc_net_inode_operations,
+       ipsec_eroute_get_info,
+       NULL, NULL, NULL, NULL, NULL
+};
+
+struct proc_dir_entry ipsec_spi =
+{
+       0,
+       9, "ipsec_spi",
+       S_IFREG | S_IRUGO, 1, 0, 0, 0,
+       &proc_net_inode_operations,
+       ipsec_spi_get_info,
+       NULL, NULL, NULL, NULL, NULL
+};
+
+struct proc_dir_entry ipsec_spigrp =
+{
+       0,
+       12, "ipsec_spigrp",
+       S_IFREG | S_IRUGO, 1, 0, 0, 0,
+       &proc_net_inode_operations,
+       ipsec_spigrp_get_info,
+       NULL, NULL, NULL, NULL, NULL
+};
+
+struct proc_dir_entry ipsec_tncfg =
+{
+       0,
+       11, "ipsec_tncfg",
+       S_IFREG | S_IRUGO, 1, 0, 0, 0,
+       &proc_net_inode_operations,
+       ipsec_tncfg_get_info,
+       NULL, NULL, NULL, NULL, NULL
+};
+
+struct proc_dir_entry ipsec_version =
+{
+       0,
+       13, "ipsec_version",
+       S_IFREG | S_IRUGO, 1, 0, 0, 0,
+       &proc_net_inode_operations,
+       ipsec_version_get_info,
+       NULL, NULL, NULL, NULL, NULL
+};
+
+#ifdef CONFIG_KLIPS_DEBUG
+struct proc_dir_entry ipsec_klipsdebug =
+{
+       0,
+       16, "ipsec_klipsdebug",
+       S_IFREG | S_IRUGO, 1, 0, 0, 0,
+       &proc_net_inode_operations,
+       ipsec_klipsdebug_get_info,
+       NULL, NULL, NULL, NULL, NULL
+};
+#endif /* CONFIG_KLIPS_DEBUG */
+#endif /* !PROC_FS_2325 */
+#endif /* CONFIG_PROC_FS */
+
+#if defined(PROC_FS_2325) 
+struct ipsec_proc_list {
+       char                   *name;
+       struct proc_dir_entry **parent;
+       struct proc_dir_entry **dir;
+       read_proc_t            *readthing;
+       write_proc_t           *writething;
+       void                   *data;
+};
+static struct ipsec_proc_list proc_items[]={
+#ifdef CONFIG_KLIPS_DEBUG
+       {"klipsdebug", &proc_net_ipsec_dir, NULL,             ipsec_klipsdebug_get_info, NULL, NULL},
+#endif
+       {"eroute",     &proc_net_ipsec_dir, &proc_eroute_dir, NULL, NULL, NULL},
+       {"all",        &proc_eroute_dir,    NULL,             ipsec_eroute_get_info,     NULL, NULL},
+       {"spi",        &proc_net_ipsec_dir, &proc_spi_dir,    NULL, NULL, NULL},
+       {"all",        &proc_spi_dir,       NULL,             ipsec_spi_get_info,        NULL, NULL},
+       {"spigrp",     &proc_net_ipsec_dir, &proc_spigrp_dir, NULL, NULL, NULL},
+       {"all",        &proc_spigrp_dir,    NULL,             ipsec_spigrp_get_info,     NULL, NULL},
+       {"birth",      &proc_net_ipsec_dir, &proc_birth_dir,  NULL,      NULL, NULL},
+       {"ipv4",       &proc_birth_dir,     NULL,             ipsec_birth_info, ipsec_birth_set, (void *)&ipsec_ipv4_birth_packet},
+       {"ipv6",       &proc_birth_dir,     NULL,             ipsec_birth_info, ipsec_birth_set, (void *)&ipsec_ipv6_birth_packet},
+       {"tncfg",      &proc_net_ipsec_dir, NULL,             ipsec_tncfg_get_info,      NULL, NULL},
+#ifdef CONFIG_KLIPS_ALG
+       {"xforms",     &proc_net_ipsec_dir, NULL,             ipsec_xform_get_info,      NULL, NULL},
+#endif /* CONFIG_KLIPS_ALG */
+       {"stats",      &proc_net_ipsec_dir, &proc_stats_dir,  NULL,      NULL, NULL},
+       {"trap_count", &proc_stats_dir,     NULL,             ipsec_stats_get_int_info, NULL, &ipsec_xmit_trap_count},
+       {"trap_sendcount", &proc_stats_dir, NULL,             ipsec_stats_get_int_info, NULL, &ipsec_xmit_trap_sendcount},
+       {"version",    &proc_net_ipsec_dir, NULL,             ipsec_version_get_info,    NULL, NULL},
+       {NULL,         NULL,                NULL,             NULL,      NULL, NULL}
+};
+#endif
+               
+int
+ipsec_proc_init()
+{
+       int error = 0;
+#ifdef IPSEC_PROC_SUBDIRS
+       struct proc_dir_entry *item;
+#endif
+
+       /*
+        * just complain because pluto won't run without /proc!
+        */
+#ifndef CONFIG_PROC_FS 
+#error You must have PROC_FS built in to use KLIPS
+#endif
+
+        /* for 2.0 kernels */
+#if !defined(PROC_FS_2325) && !defined(PROC_FS_21)
+       error |= proc_register_dynamic(&proc_net, &ipsec_eroute);
+       error |= proc_register_dynamic(&proc_net, &ipsec_spi);
+       error |= proc_register_dynamic(&proc_net, &ipsec_spigrp);
+       error |= proc_register_dynamic(&proc_net, &ipsec_tncfg);
+       error |= proc_register_dynamic(&proc_net, &ipsec_version);
+#ifdef CONFIG_KLIPS_DEBUG
+       error |= proc_register_dynamic(&proc_net, &ipsec_klipsdebug);
+#endif /* CONFIG_KLIPS_DEBUG */
+#endif
+
+       /* for 2.2 kernels */
+#if !defined(PROC_FS_2325) && defined(PROC_FS_21)
+       error |= proc_register(proc_net, &ipsec_eroute);
+       error |= proc_register(proc_net, &ipsec_spi);
+       error |= proc_register(proc_net, &ipsec_spigrp);
+       error |= proc_register(proc_net, &ipsec_tncfg);
+       error |= proc_register(proc_net, &ipsec_version);
+#ifdef CONFIG_KLIPS_DEBUG
+       error |= proc_register(proc_net, &ipsec_klipsdebug);
+#endif /* CONFIG_KLIPS_DEBUG */
+#endif
+
+       /* for 2.4 kernels */
+#if defined(PROC_FS_2325)
+       /* create /proc/net/ipsec */
+
+       /* zero these out before we initialize /proc/net/ipsec/birth/stuff */
+       memset(&ipsec_ipv4_birth_packet, 0, sizeof(struct ipsec_birth_reply));
+       memset(&ipsec_ipv6_birth_packet, 0, sizeof(struct ipsec_birth_reply));
+
+       proc_net_ipsec_dir = proc_mkdir("ipsec", proc_net);
+       if(proc_net_ipsec_dir == NULL) {
+               /* no point in continuing */
+               return 1;
+       }       
+
+       {
+               struct ipsec_proc_list *it;
+
+               it=proc_items;
+               while(it->name!=NULL) {
+                       if(it->dir) {
+                               /* make a dir instead */
+                               item = proc_mkdir(it->name, *it->parent);
+                               *it->dir = item;
+                       } else {
+                               item = create_proc_entry(it->name, 0400, *it->parent);
+                       }
+                       if(item) {
+                               item->read_proc  = it->readthing;
+                               item->write_proc = it->writething;
+                               item->data       = it->data;
+#ifdef MODULE
+                               item->owner = THIS_MODULE;
+#endif
+                       } else {
+                               error |= 1;
+                       }
+                       it++;
+               }
+       }
+       
+       /* now create some symlinks to provide compatibility */
+       proc_symlink("ipsec_eroute", proc_net, "ipsec/eroute/all");
+       proc_symlink("ipsec_spi",    proc_net, "ipsec/spi/all");
+       proc_symlink("ipsec_spigrp", proc_net, "ipsec/spigrp/all");
+       proc_symlink("ipsec_tncfg",  proc_net, "ipsec/tncfg");
+       proc_symlink("ipsec_version",proc_net, "ipsec/version");
+       proc_symlink("ipsec_klipsdebug",proc_net,"ipsec/klipsdebug");
+
+#endif /* !PROC_FS_2325 */
+
+       return error;
+}
+
+void
+ipsec_proc_cleanup()
+{
+
+       /* for 2.0 and 2.2 kernels */
+#if !defined(PROC_FS_2325) 
+
+#ifdef CONFIG_KLIPS_DEBUG
+       if (proc_net_unregister(ipsec_klipsdebug.low_ino) != 0)
+               printk("klips_debug:ipsec_cleanup: "
+                      "cannot unregister /proc/net/ipsec_klipsdebug\n");
+#endif /* CONFIG_KLIPS_DEBUG */
+
+       if (proc_net_unregister(ipsec_version.low_ino) != 0)
+               printk("klips_debug:ipsec_cleanup: "
+                      "cannot unregister /proc/net/ipsec_version\n");
+       if (proc_net_unregister(ipsec_eroute.low_ino) != 0)
+               printk("klips_debug:ipsec_cleanup: "
+                      "cannot unregister /proc/net/ipsec_eroute\n");
+       if (proc_net_unregister(ipsec_spi.low_ino) != 0)
+               printk("klips_debug:ipsec_cleanup: "
+                      "cannot unregister /proc/net/ipsec_spi\n");
+       if (proc_net_unregister(ipsec_spigrp.low_ino) != 0)
+               printk("klips_debug:ipsec_cleanup: "
+                      "cannot unregister /proc/net/ipsec_spigrp\n");
+       if (proc_net_unregister(ipsec_tncfg.low_ino) != 0)
+               printk("klips_debug:ipsec_cleanup: "
+                      "cannot unregister /proc/net/ipsec_tncfg\n");
+#endif
+
+       /* for 2.4 kernels */
+#if defined(PROC_FS_2325)
+       {
+               struct ipsec_proc_list *it;
+
+               /* find end of list */
+               it=proc_items;
+               while(it->name!=NULL) {
+                       it++;
+               }
+               it--;
+
+               do {
+                       remove_proc_entry(it->name, *it->parent);
+                       it--;
+               } while(it >= proc_items);
+       }
+
+
+#ifdef CONFIG_KLIPS_DEBUG
+       remove_proc_entry("ipsec_klipsdebug", proc_net);
+#endif /* CONFIG_KLIPS_DEBUG */
+       remove_proc_entry("ipsec_eroute",     proc_net);
+       remove_proc_entry("ipsec_spi",        proc_net);
+       remove_proc_entry("ipsec_spigrp",     proc_net);
+       remove_proc_entry("ipsec_tncfg",      proc_net);
+       remove_proc_entry("ipsec_version",    proc_net);
+       remove_proc_entry("ipsec",            proc_net);
+#endif /* 2.4 kernel */
+}
+
+/*
+ * $Log: ipsec_proc.c,v $
+ * Revision 1.39.2.7  2007-11-06 18:24:44  paul
+ * include linux/moduleparam.h on linux 2.4.x kernels.
+ *
+ * Revision 1.39.2.6  2007/09/05 02:41:20  paul
+ * Added xforms info to /proc file. Patch by David McCullough
+ *
+ * Revision 1.39.2.5  2007/08/09 14:37:45  paul
+ * Patch by sergeil to compile on 2.4.35.
+ *
+ * Revision 1.39.2.4  2006/11/15 22:21:39  paul
+ * backport of creating a /sys/ file to test for nat-t capability in kernel.
+ *
+ * Revision 1.39.2.3  2006/10/06 21:39:26  paul
+ * Fix for 2.6.18+ only include linux/config.h if AUTOCONF_INCLUDED is not
+ * set. This is defined through autoconf.h which is included through the
+ * linux kernel build macros.
+ *
+ * Revision 1.39.2.2  2006/02/13 18:48:12  paul
+ * Fix by  Ankit Desai <ankit@elitecore.com> for module unloading.
+ *
+ * Revision 1.39.2.1  2005/09/07 00:45:59  paul
+ * pull up of mcr's nat-t klips detection patch from head
+ *
+ * Revision 1.39  2005/05/20 03:19:18  mcr
+ *     modifications for use on 2.4.30 kernel, with backported
+ *     printk_ratelimit(). all warnings removed.
+ *
+ * Revision 1.38  2005/04/29 05:10:22  mcr
+ *     removed from extraenous includes to make unit testing easier.
+ *
+ * Revision 1.37  2005/04/13 22:49:49  mcr
+ *     moved KLIPS specific snprintf() wrapper to seperate file.
+ *
+ * Revision 1.36  2005/04/06 17:44:36  mcr
+ *     when NAT-T is compiled out, show encap as "NA"
+ *
+ * Revision 1.35  2005/01/26 00:50:35  mcr
+ *     adjustment of confusion of CONFIG_IPSEC_NAT vs CONFIG_KLIPS_NAT,
+ *     and make sure that NAT_TRAVERSAL is set as well to match
+ *     userspace compiles of code.
+ *
+ * Revision 1.34  2004/12/03 21:25:57  mcr
+ *     compile time fixes for running on 2.6.
+ *     still experimental.
+ *
+ * Revision 1.33  2004/08/17 03:27:23  mcr
+ *     klips 2.6 edits.
+ *
+ * Revision 1.32  2004/08/03 18:19:08  mcr
+ *     in 2.6, use "net_device" instead of #define device->net_device.
+ *     this probably breaks 2.0 compiles.
+ *
+ * Revision 1.31  2004/07/10 19:11:18  mcr
+ *     CONFIG_IPSEC -> CONFIG_KLIPS.
+ *
+ * Revision 1.30  2004/04/25 21:23:11  ken
+ * Pull in dhr's changes from FreeS/WAN 2.06
+ *
+ * Revision 1.29  2004/04/06 02:49:26  mcr
+ *     pullup of algo code from alg-branch.
+ *
+ * Revision 1.28  2004/03/28 20:29:58  paul
+ *      <hugh_> ssize_t, not ssized_t
+ *
+ * Revision 1.27  2004/03/28 20:27:20  paul
+ * Included tested and confirmed fixes mcr made and dhr verified for
+ * snprint statements. Changed one other snprintf to use ipsec_snprintf
+ * so it wouldnt break compatibility with 2.0/2.2 kernels. Verified with
+ * dhr. (thanks dhr!)
+ *
+ * Revision 1.26  2004/02/09 22:07:06  mcr
+ *     added information about nat-traversal setting to spi-output.
+ *
+ * Revision 1.25.4.1  2004/04/05 04:30:46  mcr
+ *     patches for alg-branch to compile/work with 2.x openswan
+ *
+ * Revision 1.25  2003/10/31 02:27:55  mcr
+ *     pulled up port-selector patches and sa_id elimination.
+ *
+ * Revision 1.24.4.1  2003/10/29 01:30:41  mcr
+ *     elimited "struct sa_id".
+ *
+ * Revision 1.24  2003/06/20 01:42:21  mcr
+ *     added counters to measure how many ACQUIREs we send to pluto,
+ *     and how many are successfully sent.
+ *
+ * Revision 1.23  2003/04/03 17:38:09  rgb
+ * Centralised ipsec_kfree_skb and ipsec_dev_{get,put}.
+ *
+ * Revision 1.22  2002/09/20 15:40:57  rgb
+ * Renamed saref macros for consistency and brevity.
+ *
+ * Revision 1.21  2002/09/20 05:01:35  rgb
+ * Print ref and  reftable, refentry seperately.
+ *
+ * Revision 1.20  2002/09/19 02:35:39  mcr
+ *     do not define structures needed by /proc/net/ipsec/ if we
+ *     aren't going create that directory.
+ *
+ * Revision 1.19  2002/09/10 01:43:25  mcr
+ *     fixed problem in /-* comment.
+ *
+ * Revision 1.18  2002/09/03 16:22:11  mcr
+ *     fixed initialization of birth/stuff values - some simple
+ *     screw ups in the code.
+ *     removed debugging that was left in by mistake.
+ *
+ * Revision 1.17  2002/09/02 17:54:53  mcr
+ *     changed how the table driven /proc entries are created so that
+ *     making subdirs is now explicit rather than implicit.
+ *
+ * Revision 1.16  2002/08/30 01:23:37  mcr
+ *     reorganized /proc creating code to clear up ifdefs,
+ *     make the 2.4 code table driven, and put things into
+ *     /proc/net/ipsec subdir. Symlinks are left for compatibility.
+ *
+ * Revision 1.15  2002/08/13 19:01:25  mcr
+ *     patches from kenb to permit compilation of FreeSWAN on ia64.
+ *     des library patched to use proper DES_LONG type for ia64.
+ *
+ * Revision 1.14  2002/07/26 08:48:31  rgb
+ * Added SA ref table code.
+ *
+ * Revision 1.13  2002/07/24 18:44:54  rgb
+ * Type fiddling to tame ia64 compiler.
+ *
+ * Revision 1.12  2002/05/27 18:56:07  rgb
+ * Convert to dynamic ipsec device allocation.
+ *
+ * Revision 1.11  2002/05/23 07:14:50  rgb
+ * Added refcount code.
+ * Cleaned up %p variants to 0p%p for test suite cleanup.
+ * Convert "usecount" to "refcount" to remove ambiguity.
+ *
+ * Revision 1.10  2002/04/24 07:55:32  mcr
+ *     #include patches and Makefiles for post-reorg compilation.
+ *
+ * Revision 1.9  2002/04/24 07:36:28  mcr
+ * Moved from ./klips/net/ipsec/ipsec_proc.c,v
+ *
+ * Revision 1.8  2002/01/29 17:17:55  mcr
+ *     moved include of ipsec_param.h to after include of linux/kernel.h
+ *     otherwise, it seems that some option that is set in ipsec_param.h
+ *     screws up something subtle in the include path to kernel.h, and
+ *     it complains on the snprintf() prototype.
+ *
+ * Revision 1.7  2002/01/29 04:00:52  mcr
+ *     more excise of kversions.h header.
+ *
+ * Revision 1.6  2002/01/29 02:13:17  mcr
+ *     introduction of ipsec_kversion.h means that include of
+ *     ipsec_param.h must preceed any decisions about what files to
+ *     include to deal with differences in kernel source.
+ *
+ * Revision 1.5  2002/01/12 02:54:30  mcr
+ *     beginnings of /proc/net/ipsec dir.
+ *
+ * Revision 1.4  2001/12/11 02:21:05  rgb
+ * Don't include module version here, fixing 2.2 compile bug.
+ *
+ * Revision 1.3  2001/12/05 07:19:44  rgb
+ * Fixed extraneous #include "version.c" bug causing modular KLIPS failure.
+ *
+ * Revision 1.2  2001/11/26 09:16:14  rgb
+ * Merge MCR's ipsec_sa, eroute, proc and struct lifetime changes.
+ *
+ * Revision 1.74  2001/11/22 05:44:11  henry
+ * new version stuff
+ *
+ * Revision 1.1.2.1  2001/09/25 02:19:40  mcr
+ *     /proc manipulation code moved to new ipsec_proc.c
+ *
+ *
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ *
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/ipsec_radij.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,893 @@
+/*
+ * Interface between the IPSEC code and the radix (radij) tree code
+ * Copyright (C) 1996, 1997  John Ioannidis.
+ * Copyright (C) 1998, 1999, 2000, 2001  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id: ipsec_radij.c,v 1.73.2.2 2007-09-05 02:56:09 paul Exp $
+ */
+
+#ifndef AUTOCONF_INCLUDED
+#include <linux/config.h>
+#endif
+#include <linux/version.h>
+#include <linux/kernel.h> /* printk() */
+
+#include "openswan/ipsec_param.h"
+
+#ifdef MALLOC_SLAB
+# include <linux/slab.h> /* kmalloc() */
+#else /* MALLOC_SLAB */
+# include <linux/malloc.h> /* kmalloc() */
+#endif /* MALLOC_SLAB */
+#include <linux/errno.h>  /* error codes */
+#include <linux/types.h>  /* size_t */
+#include <linux/interrupt.h> /* mark_bh */
+
+#include <linux/netdevice.h>   /* struct device, struct net_device_stats and other headers */
+#include <linux/etherdevice.h> /* eth_type_trans */
+#include <linux/ip.h>          /* struct iphdr */
+#include <linux/skbuff.h>
+#include <openswan.h>
+#ifdef SPINLOCK
+# ifdef SPINLOCK_23
+#  include <linux/spinlock.h> /* *lock* */
+# else /* 23_SPINLOCK */
+#  include <asm/spinlock.h> /* *lock* */
+# endif /* 23_SPINLOCK */
+#endif /* SPINLOCK */
+
+#include <net/ip.h>
+
+#include "openswan/ipsec_eroute.h"
+#include "openswan/ipsec_sa.h"
+ 
+#include "openswan/radij.h"
+#include "openswan/ipsec_encap.h"
+#include "openswan/radij.h"
+#include "openswan/ipsec_encap.h"
+#include "openswan/ipsec_radij.h"
+#include "openswan/ipsec_tunnel.h"     /* struct ipsecpriv */
+#include "openswan/ipsec_xform.h"
+ 
+#include <pfkeyv2.h>
+#include <pfkey.h>
+
+#include "openswan/ipsec_proto.h"
+
+#ifdef CONFIG_KLIPS_DEBUG
+int debug_radij = 0;
+#endif /* CONFIG_KLIPS_DEBUG */
+
+struct radij_node_head *rnh = NULL;
+#ifdef SPINLOCK
+spinlock_t eroute_lock = SPIN_LOCK_UNLOCKED;
+#else /* SPINLOCK */
+spinlock_t eroute_lock;
+#endif /* SPINLOCK */
+
+int
+ipsec_radijinit(void)
+{
+       maj_keylen = sizeof (struct sockaddr_encap);
+
+       rj_init();
+       
+       if (rj_inithead((void **)&rnh, /*16*/offsetof(struct sockaddr_encap, sen_type) * sizeof(__u8)) == 0) /* 16 is bit offset of sen_type */
+               return -1;
+       return 0;
+}
+
+int
+ipsec_radijcleanup(void)
+{
+       int error;
+
+       spin_lock_bh(&eroute_lock);
+
+       error = radijcleanup();
+
+       spin_unlock_bh(&eroute_lock);
+
+       return error;
+}
+
+int
+ipsec_cleareroutes(void)
+{
+       int error;
+
+       spin_lock_bh(&eroute_lock);
+
+       error = radijcleartree();
+
+       spin_unlock_bh(&eroute_lock);
+
+       return error;
+}
+
+int
+ipsec_breakroute(struct sockaddr_encap *eaddr,
+                struct sockaddr_encap *emask,
+                struct sk_buff **first,
+                struct sk_buff **last)
+{
+       struct eroute *ro;
+       struct radij_node *rn;
+       int error;
+#ifdef CONFIG_KLIPS_DEBUG
+       
+       if (debug_eroute) {
+                char buf1[SUBNETTOA_BUF], buf2[SUBNETTOA_BUF];
+               subnettoa(eaddr->sen_ip_src, emask->sen_ip_src, 0, buf1, sizeof(buf1));
+               subnettoa(eaddr->sen_ip_dst, emask->sen_ip_dst, 0, buf2, sizeof(buf2));
+               KLIPS_PRINT(debug_eroute,
+                           "klips_debug:ipsec_breakroute: "
+                           "attempting to delete eroute for %s:%d->%s:%d %d\n",
+                           buf1, ntohs(eaddr->sen_sport),
+                           buf2, ntohs(eaddr->sen_dport), eaddr->sen_proto);
+       }
+#endif /* CONFIG_KLIPS_DEBUG */
+
+       spin_lock_bh(&eroute_lock);
+
+       if ((error = rj_delete(eaddr, emask, rnh, &rn)) != 0) {
+               spin_unlock_bh(&eroute_lock);
+               KLIPS_PRINT(debug_eroute, 
+                           "klips_debug:ipsec_breakroute: "
+                           "node not found, eroute delete failed.\n");
+               return error;
+       }
+
+       spin_unlock_bh(&eroute_lock);
+       
+       ro = (struct eroute *)rn;
+       
+       KLIPS_PRINT(debug_eroute, 
+                   "klips_debug:ipsec_breakroute: "
+                   "deleted eroute=0p%p, ident=0p%p->0p%p, first=0p%p, last=0p%p\n",
+                   ro,
+                   ro->er_ident_s.data,
+                   ro->er_ident_d.data,
+                   ro->er_first,
+                   ro->er_last);
+       
+       if (ro->er_ident_s.data != NULL) {
+               kfree(ro->er_ident_s.data);
+       }
+       if (ro->er_ident_d.data != NULL) {
+               kfree(ro->er_ident_d.data);
+       }
+       if (ro->er_first != NULL) {
+#if 0
+               struct net_device_stats *stats = (struct net_device_stats *) &(((struct ipsecpriv *)(ro->er_first->dev->priv))->mystats);
+               stats->tx_dropped--;
+#endif
+               *first = ro->er_first;
+       }
+       if (ro->er_last != NULL) {
+#if 0
+               struct net_device_stats *stats = (struct net_device_stats *) &(((struct ipsecpriv *)(ro->er_last->dev->priv))->mystats);
+               stats->tx_dropped--;
+#endif
+               *last = ro->er_last;
+       }
+       
+       if (rn->rj_flags & (RJF_ACTIVE | RJF_ROOT))
+               panic ("ipsec_breakroute RMT_DELEROUTE root or active node\n");
+       memset((caddr_t)rn, 0, sizeof (struct eroute));
+       kfree(rn);
+       
+       return 0;
+}
+
+int
+ipsec_makeroute(struct sockaddr_encap *eaddr,
+               struct sockaddr_encap *emask,
+               ip_said said,
+               uint32_t pid,
+               struct sk_buff *skb,
+               struct ident *ident_s,
+               struct ident *ident_d)
+{
+       struct eroute *retrt;
+       int error;
+       char sa[SATOT_BUF];
+       size_t sa_len;
+
+#ifdef CONFIG_KLIPS_DEBUG
+       
+       if (debug_eroute) {
+
+               {
+                       char buf1[SUBNETTOA_BUF], buf2[SUBNETTOA_BUF];
+
+                       subnettoa(eaddr->sen_ip_src, emask->sen_ip_src, 0, buf1, sizeof(buf1));
+                       subnettoa(eaddr->sen_ip_dst, emask->sen_ip_dst, 0, buf2, sizeof(buf2));
+                       sa_len = satot(&said, 0, sa, sizeof(sa));
+                       KLIPS_PRINT(debug_eroute,
+                                   "klips_debug:ipsec_makeroute: "
+                                   "attempting to allocate %lu bytes to insert eroute for %s->%s, SA: %s, PID:%d, skb=0p%p, ident:%s->%s\n",
+                                   (unsigned long) sizeof(struct eroute),
+                                   buf1,
+                                   buf2,
+                                   sa_len ? sa : " (error)",
+                                   pid,
+                                   skb,
+                                   (ident_s ? (ident_s->data ? ident_s->data : "NULL") : "NULL"),
+                                   (ident_d ? (ident_d->data ? ident_d->data : "NULL") : "NULL"));
+               }
+               {
+                       char buf1[sizeof(struct sockaddr_encap)*2 + 1],   
+                               buf2[sizeof(struct sockaddr_encap)*2 + 1];
+                       int i;
+                       unsigned char *b1 = buf1,
+                               *b2 = buf2,
+                               *ea = (unsigned char *)eaddr,
+                               *em = (unsigned char *)emask;
+                                   
+                                   
+                       for (i=0; i<sizeof(struct sockaddr_encap); i++) {
+                               sprintf(b1, "%02x", ea[i]);
+                               sprintf(b2, "%02x", em[i]);
+                               b1+=2;
+                               b2+=2;
+                       }
+                       KLIPS_PRINT(debug_eroute, "klips_debug:ipsec_makeroute: %s / %s \n", buf1, buf2);
+                }
+
+       }
+#endif /* CONFIG_KLIPS_DEBUG */
+
+       retrt = (struct eroute *)kmalloc(sizeof (struct eroute), GFP_ATOMIC);
+       if (retrt == NULL) {
+               printk("klips_error:ipsec_makeroute: "
+                      "not able to allocate kernel memory");
+               return -ENOMEM;
+       }
+       memset((caddr_t)retrt, 0, sizeof (struct eroute));
+
+       retrt->er_eaddr = *eaddr;
+       retrt->er_emask = *emask;
+       retrt->er_said = said;
+       retrt->er_pid = pid;
+       retrt->er_count = 0;
+       retrt->er_lasttime = jiffies/HZ;
+
+       {
+         /* this is because gcc 3. doesn't like cast's as lvalues */
+         struct rjtentry *rje = (struct rjtentry *)&(retrt->er_rjt);
+         caddr_t er = (caddr_t)&(retrt->er_eaddr);
+         
+         rje->rd_nodes->rj_key= er;
+       }
+       
+       if (ident_s && ident_s->type != SADB_IDENTTYPE_RESERVED) {
+               int data_len = ident_s->len * IPSEC_PFKEYv2_ALIGN - sizeof(struct sadb_ident);
+               
+               retrt->er_ident_s.type = ident_s->type;
+               retrt->er_ident_s.id = ident_s->id;
+               retrt->er_ident_s.len = ident_s->len;
+               if(data_len) {
+                       KLIPS_PRINT(debug_eroute, 
+                                   "klips_debug:ipsec_makeroute: "
+                                   "attempting to allocate %u bytes for ident_s.\n",
+                                   data_len);
+                       if(!(retrt->er_ident_s.data = kmalloc(data_len, GFP_KERNEL))) {
+                               kfree(retrt);
+                               printk("klips_error:ipsec_makeroute: not able to allocate kernel memory (%d)\n", data_len);
+                               return ENOMEM;
+                       }
+                       memcpy(retrt->er_ident_s.data, ident_s->data, data_len);
+               } else {
+                       retrt->er_ident_s.data = NULL;
+               }
+       }
+       
+       if (ident_d && ident_d->type != SADB_IDENTTYPE_RESERVED) {
+               int data_len = ident_d->len  * IPSEC_PFKEYv2_ALIGN - sizeof(struct sadb_ident);
+               
+               retrt->er_ident_d.type = ident_d->type;
+               retrt->er_ident_d.id = ident_d->id;
+               retrt->er_ident_d.len = ident_d->len;
+               if(data_len) {
+                       KLIPS_PRINT(debug_eroute, 
+                                   "klips_debug:ipsec_makeroute: "
+                                   "attempting to allocate %u bytes for ident_d.\n",
+                                   data_len);
+                       if(!(retrt->er_ident_d.data = kmalloc(data_len, GFP_KERNEL))) {
+                               if (retrt->er_ident_s.data)
+                                       kfree(retrt->er_ident_s.data);
+                               kfree(retrt);
+                               printk("klips_error:ipsec_makeroute: not able to allocate kernel memory (%d)\n", data_len);
+                               return ENOMEM;
+                       }
+                       memcpy(retrt->er_ident_d.data, ident_d->data, data_len);
+               } else {
+                       retrt->er_ident_d.data = NULL;
+               }
+       }
+       retrt->er_first = skb;
+       retrt->er_last = NULL;
+       
+       KLIPS_PRINT(debug_eroute, 
+                   "klips_debug:ipsec_makeroute: "
+                   "calling rj_addroute now\n");
+
+       spin_lock_bh(&eroute_lock);
+       
+       error = rj_addroute(&(retrt->er_eaddr), &(retrt->er_emask), 
+                        rnh, retrt->er_rjt.rd_nodes);
+
+       spin_unlock_bh(&eroute_lock);
+       
+       if(error) {
+               sa_len = KLIPS_SATOT(debug_eroute, &said, 0, sa, sizeof(sa));
+               KLIPS_PRINT(debug_eroute, 
+                           "klips_debug:ipsec_makeroute: "
+                           "rj_addroute not able to insert eroute for SA:%s (error:%d)\n",
+                           sa_len ? sa : " (error)", error);
+               if (retrt->er_ident_s.data)
+                       kfree(retrt->er_ident_s.data);
+               if (retrt->er_ident_d.data)
+                       kfree(retrt->er_ident_d.data);
+               
+               kfree(retrt);
+               
+               return error;
+       }
+
+#ifdef CONFIG_KLIPS_DEBUG
+       if (debug_eroute) {
+               char buf1[SUBNETTOA_BUF], buf2[SUBNETTOA_BUF];
+/*
+               subnettoa(eaddr->sen_ip_src, emask->sen_ip_src, 0, buf1, sizeof(buf1));
+               subnettoa(eaddr->sen_ip_dst, emask->sen_ip_dst, 0, buf2, sizeof(buf2));
+*/
+               subnettoa(rd_key((&(retrt->er_rjt)))->sen_ip_src, rd_mask((&(retrt->er_rjt)))->sen_ip_src, 0, buf1, sizeof(buf1));
+               subnettoa(rd_key((&(retrt->er_rjt)))->sen_ip_dst, rd_mask((&(retrt->er_rjt)))->sen_ip_dst, 0, buf2, sizeof(buf2));
+               sa_len = satot(&retrt->er_said, 0, sa, sizeof(sa));
+               
+               KLIPS_PRINT(debug_eroute,
+                           "klips_debug:ipsec_makeroute: "
+                           "pid=%05d "
+                           "count=%10d "
+                           "lasttime=%6d "
+                           "%-18s -> %-18s => %s\n",
+                           retrt->er_pid,
+                           retrt->er_count,
+                           (int)(jiffies/HZ - retrt->er_lasttime),
+                           buf1,
+                           buf2,
+                           sa_len ? sa : " (error)");
+       }
+#endif /* CONFIG_KLIPS_DEBUG */
+       KLIPS_PRINT(debug_eroute,
+                   "klips_debug:ipsec_makeroute: "
+                   "succeeded.\n");
+       return 0;
+}
+
+struct eroute *
+ipsec_findroute(struct sockaddr_encap *eaddr)
+{
+       struct radij_node *rn;
+#ifdef CONFIG_KLIPS_DEBUG
+       char buf1[ADDRTOA_BUF], buf2[ADDRTOA_BUF];
+       
+       if (debug_radij & DB_RJ_FINDROUTE) {
+               addrtoa(eaddr->sen_ip_src, 0, buf1, sizeof(buf1));
+               addrtoa(eaddr->sen_ip_dst, 0, buf2, sizeof(buf2));
+               KLIPS_PRINT(debug_eroute,
+                           "klips_debug:ipsec_findroute: "
+                           "%s:%d->%s:%d %d\n",
+                           buf1, ntohs(eaddr->sen_sport),
+                           buf2, ntohs(eaddr->sen_dport),
+                           eaddr->sen_proto);
+       }
+#endif /* CONFIG_KLIPS_DEBUG */
+       rn = rj_match((caddr_t)eaddr, rnh);
+       if(rn) {
+               KLIPS_PRINT(debug_eroute && sysctl_ipsec_debug_verbose,
+                           "klips_debug:ipsec_findroute: "
+                           "found, points to proto=%d, spi=%x, dst=%x.\n",
+                           ((struct eroute*)rn)->er_said.proto,
+                           ntohl(((struct eroute*)rn)->er_said.spi),
+                           ntohl(((struct eroute*)rn)->er_said.dst.u.v4.sin_addr.s_addr));
+       }
+       return (struct eroute *)rn;
+}
+               
+#ifdef CONFIG_PROC_FS
+/** ipsec_rj_walker_procprint: print one line of eroute table output.
+ *
+ * Theoretical BUG: if w->length is less than the length
+ * of some line we should produce, that line will never
+ * be finished.  In effect, the "file" will stop part way 
+ * through that line.
+ */
+int
+ipsec_rj_walker_procprint(struct radij_node *rn, void *w0)
+{
+       struct eroute *ro = (struct eroute *)rn;
+       struct rjtentry *rd = (struct rjtentry *)rn;
+       struct wsbuf *w = (struct wsbuf *)w0;
+       char buf1[SUBNETTOA_BUF], buf2[SUBNETTOA_BUF];
+       char buf3[16];
+       char sa[SATOT_BUF];
+       size_t sa_len, buf_len;
+       struct sockaddr_encap *key, *mask;
+       
+       KLIPS_PRINT(debug_radij,
+                   "klips_debug:ipsec_rj_walker_procprint: "
+                   "rn=0p%p, w0=0p%p\n",
+                   rn,
+                   w0);
+       if (rn->rj_b >= 0) {
+               return 0;
+       }
+       
+       key = rd_key(rd);
+       mask = rd_mask(rd);
+
+       if (key == NULL || mask == NULL) {
+                return 0;
+        }
+
+       buf_len = subnettoa(key->sen_ip_src, mask->sen_ip_src, 0, buf1, sizeof(buf1));
+       if(key->sen_sport != 0) {
+         sprintf(buf1+buf_len-1, ":%d", ntohs(key->sen_sport));
+       }
+
+       buf_len = subnettoa(key->sen_ip_dst, mask->sen_ip_dst, 0, buf2, sizeof(buf2));
+       if(key->sen_dport != 0) {
+         sprintf(buf2+buf_len-1, ":%d", ntohs(key->sen_dport));
+       }
+
+       buf3[0]='\0';
+       if(key->sen_proto != 0) {
+         sprintf(buf3, ":%d", key->sen_proto);
+       }
+
+       sa_len = satot(&ro->er_said, 'x', sa, sizeof(sa));
+       w->len += ipsec_snprintf(w->buffer + w->len,
+                                w->length - w->len,
+                                "%-10d "
+                                "%-18s -> %-18s => %s%s\n",
+                                ro->er_count,
+                                buf1,
+                                buf2,
+                                sa_len ? sa : " (error)",
+                                buf3);
+       
+       {
+               /* snprintf can only fill the last character with NUL
+                * so the maximum useful character is w->length-1.
+                * However, if w->length == 0, we cannot go back.
+                * (w->length surely cannot be negative.)
+                */
+               int max_content = w->length > 0? w->length-1 : 0;
+
+               if (w->len >= max_content) {
+                       /* we've done all that can fit -- stop treewalking */
+                       w->len = max_content;   /* truncate crap */
+                       return -ENOBUFS;
+               } else {
+                       const off_t pos = w->begin + w->len;    /* file position of end of what we've generated */
+                
+                       if (pos <= w->offset) {
+                               /* all is before first interesting character:
+                                * discard, but note where we are.
+                                */
+                               w->len = 0;
+                               w->begin = pos;
+                       }
+                       return 0;
+               }
+        }        
+}
+#endif          /* CONFIG_PROC_FS */
+
+int
+ipsec_rj_walker_delete(struct radij_node *rn, void *w0)
+{
+       struct eroute *ro;
+       struct rjtentry *rd = (struct rjtentry *)rn;
+       struct radij_node *rn2;
+       int error;
+       struct sockaddr_encap *key, *mask;
+       
+       key = rd_key(rd);
+       mask = rd_mask(rd);
+       
+       if(!key || !mask) {
+               return -ENODATA;
+       }
+#ifdef CONFIG_KLIPS_DEBUG
+       if(debug_radij) {
+               char buf1[SUBNETTOA_BUF], buf2[SUBNETTOA_BUF];
+               subnettoa(key->sen_ip_src, mask->sen_ip_src, 0, buf1, sizeof(buf1));
+               subnettoa(key->sen_ip_dst, mask->sen_ip_dst, 0, buf2, sizeof(buf2));
+               KLIPS_PRINT(debug_radij, 
+                           "klips_debug:ipsec_rj_walker_delete: "
+                           "deleting: %s -> %s\n",
+                           buf1,
+                           buf2);
+       }
+#endif /* CONFIG_KLIPS_DEBUG */
+
+       if((error = rj_delete(key, mask, rnh, &rn2))) {
+               KLIPS_PRINT(debug_radij,
+                           "klips_debug:ipsec_rj_walker_delete: "
+                           "rj_delete failed with error=%d.\n", error);
+               return error;
+       }
+
+       if(rn2 != rn) {
+               printk("klips_debug:ipsec_rj_walker_delete: "
+                      "tried to delete a different node?!?  This should never happen!\n");
+       }
+ 
+       ro = (struct eroute *)rn;
+       
+       if (ro->er_ident_s.data)
+               kfree(ro->er_ident_s.data);
+       if (ro->er_ident_d.data)
+               kfree(ro->er_ident_d.data);
+       
+       memset((caddr_t)rn, 0, sizeof (struct eroute));
+       kfree(rn);
+       
+       return 0;
+}
+
+/*
+ * $Log: ipsec_radij.c,v $
+ * Revision 1.73.2.2  2007-09-05 02:56:09  paul
+ * Use the new ipsec_kversion macros by David to deal with 2.6.22 kernels.
+ * Fixes based on David McCullough patch.
+ *
+ * Revision 1.73.2.1  2006/10/06 21:39:26  paul
+ * Fix for 2.6.18+ only include linux/config.h if AUTOCONF_INCLUDED is not
+ * set. This is defined through autoconf.h which is included through the
+ * linux kernel build macros.
+ *
+ * Revision 1.73  2005/04/29 05:10:22  mcr
+ *     removed from extraenous includes to make unit testing easier.
+ *
+ * Revision 1.72  2004/12/03 21:25:57  mcr
+ *     compile time fixes for running on 2.6.
+ *     still experimental.
+ *
+ * Revision 1.71  2004/07/10 19:11:18  mcr
+ *     CONFIG_IPSEC -> CONFIG_KLIPS.
+ *
+ * Revision 1.70  2004/04/25 21:10:52  ken
+ * Pull in dhr's changes from FreeS/WAN 2.06
+ *
+ * Revision 1.69  2004/04/06 02:49:26  mcr
+ *     pullup of algo code from alg-branch.
+ *
+ * Revision 1.68  2004/03/28 20:27:20  paul
+ * Included tested and confirmed fixes mcr made and dhr verified for
+ * snprint statements. Changed one other snprintf to use ipsec_snprintf
+ * so it wouldnt break compatibility with 2.0/2.2 kernels. Verified with
+ * dhr. (thanks dhr!)
+ *
+ * Revision 1.67.4.1  2004/04/05 04:30:46  mcr
+ *     patches for alg-branch to compile/work with 2.x openswan
+ *
+ * Revision 1.67  2003/10/31 02:27:55  mcr
+ *     pulled up port-selector patches and sa_id elimination.
+ *
+ * Revision 1.66.24.2  2003/10/29 01:30:41  mcr
+ *     elimited "struct sa_id".
+ *
+ * Revision 1.66.24.1  2003/09/21 13:59:56  mcr
+ *     pre-liminary X.509 patch - does not yet pass tests.
+ *
+ * Revision 1.66  2002/10/12 23:11:53  dhr
+ *
+ * [KenB + DHR] more 64-bit cleanup
+ *
+ * Revision 1.65  2002/09/20 05:01:40  rgb
+ * Added memory allocation debugging.
+ *
+ * Revision 1.64  2002/05/31 01:46:05  mcr
+ *     added && sysctl_ipsec_debug_verbose verbose to ipsec_findroute
+ *     as requested in PR#14.
+ *
+ * Revision 1.63  2002/05/23 07:14:11  rgb
+ * Cleaned up %p variants to 0p%p for test suite cleanup.
+ *
+ * Revision 1.62  2002/04/24 07:55:32  mcr
+ *     #include patches and Makefiles for post-reorg compilation.
+ *
+ * Revision 1.61  2002/04/24 07:36:29  mcr
+ * Moved from ./klips/net/ipsec/ipsec_radij.c,v
+ *
+ * Revision 1.60  2002/02/19 23:59:45  rgb
+ * Removed redundant compiler directives.
+ *
+ * Revision 1.59  2002/02/06 04:13:47  mcr
+ *     missing #ifdef CONFIG_IPSEC_DEBUG.
+ *
+ * Revision 1.58  2002/01/29 17:17:56  mcr
+ *     moved include of ipsec_param.h to after include of linux/kernel.h
+ *     otherwise, it seems that some option that is set in ipsec_param.h
+ *     screws up something subtle in the include path to kernel.h, and
+ *     it complains on the snprintf() prototype.
+ *
+ * Revision 1.57  2002/01/29 04:00:52  mcr
+ *     more excise of kversions.h header.
+ *
+ * Revision 1.56  2002/01/29 02:13:17  mcr
+ *     introduction of ipsec_kversion.h means that include of
+ *     ipsec_param.h must preceed any decisions about what files to
+ *     include to deal with differences in kernel source.
+ *
+ * Revision 1.55  2001/11/26 09:23:48  rgb
+ * Merge MCR's ipsec_sa, eroute, proc and struct lifetime changes.
+ *
+ * Revision 1.53.2.1  2001/09/25 02:26:32  mcr
+ *     headers adjusted for new usage.
+ *
+ * Revision 1.54  2001/10/18 04:45:20  rgb
+ * 2.4.9 kernel deprecates linux/malloc.h in favour of linux/slab.h,
+ * lib/freeswan.h version macros moved to lib/kversions.h.
+ * Other compiler directive cleanups.
+ *
+ * Revision 1.53  2001/09/19 17:19:40  rgb
+ * Debug output bugfix for NetCelo's PF_KEY ident patch.
+ *
+ * Revision 1.52  2001/09/19 16:33:37  rgb
+ * Temporarily disable ident fields to /proc/net/ipsec_eroute.
+ *
+ * Revision 1.51  2001/09/15 16:24:04  rgb
+ * Re-inject first and last HOLD packet when an eroute REPLACE is done.
+ *
+ * Revision 1.50  2001/09/14 16:58:36  rgb
+ * Added support for storing the first and last packets through a HOLD.
+ *
+ * Revision 1.49  2001/09/08 21:13:32  rgb
+ * Added pfkey ident extension support for ISAKMPd. (NetCelo)
+ *
+ * Revision 1.48  2001/06/15 04:12:56  rgb
+ * Fixed kernel memory allocation error return code polarity bug.
+ *
+ * Revision 1.47  2001/06/14 19:35:09  rgb
+ * Update copyright date.
+ *
+ * Revision 1.46  2001/06/08 08:47:18  rgb
+ * Fixed for debug disabled.
+ *
+ * Revision 1.45  2001/05/27 06:12:11  rgb
+ * Added structures for pid, packet count and last access time to eroute.
+ * Added packet count to beginning of /proc/net/ipsec_eroute.
+ *
+ * Revision 1.44  2001/05/03 19:41:01  rgb
+ * Initialise error return variable.
+ * Use more appropriate return value for ipsec_rj_walker_delete().
+ *
+ * Revision 1.43  2001/02/27 22:24:54  rgb
+ * Re-formatting debug output (line-splitting, joining, 1arg/line).
+ * Check for satoa() return codes.
+ *
+ * Revision 1.42  2001/02/27 06:21:57  rgb
+ * Added findroute success instrumentation.
+ *
+ * Revision 1.41  2000/11/06 04:32:08  rgb
+ * Ditched spin_lock_irqsave in favour of spin_lock_bh.
+ *
+ * Revision 1.40  2000/09/08 19:12:56  rgb
+ * Change references from DEBUG_IPSEC to CONFIG_IPSEC_DEBUG.
+ *
+ * Revision 1.39  2000/08/30 05:25:20  rgb
+ * Correct debug text in ipsec_breakroute() from incorrect
+ * "ipsec_callback".
+ *
+ * Revision 1.38  2000/07/28 14:58:31  rgb
+ * Changed kfree_s to kfree, eliminating extra arg to fix 2.4.0-test5.
+ *
+ * Revision 1.37  2000/03/16 14:02:50  rgb
+ * Fixed debug scope to enable compilation with debug off.
+ *
+ * Revision 1.36  2000/01/21 06:14:46  rgb
+ * Added debugging text to ipsec_rj_walker_delete().
+ * Set return code to negative for consistency.
+ *
+ * Revision 1.35  1999/11/23 23:05:24  rgb
+ * Use provided macro ADDRTOA_BUF instead of hardcoded value.
+ *
+ * Revision 1.34  1999/11/18 04:13:56  rgb
+ * Replaced all kernel version macros to shorter, readable form.
+ * Added CONFIG_PROC_FS compiler directives in case it is shut off.
+ *
+ * Revision 1.33  1999/11/17 15:53:39  rgb
+ * Changed all occurrences of #include "../../../lib/freeswan.h"
+ * to #include <freeswan.h> which works due to -Ilibfreeswan in the
+ * klips/net/ipsec/Makefile.
+ *
+ * Revision 1.32  1999/10/26 13:58:33  rgb
+ * Put spinlock flags variable declaration outside the debug compiler
+ * directive to enable compilation with debug shut off.
+ *
+ * Revision 1.31  1999/10/15 22:13:29  rgb
+ * Clean out cruft.
+ * Align /proc/net/ipsec_eroute output for easier readability.
+ * Fix double linefeed in radij debug output.
+ * Fix double locking bug that locks up 2.0.36 but not 2.0.38.
+ *
+ * Revision 1.30  1999/10/08 18:37:33  rgb
+ * Fix end-of-line spacing to sate whining PHMs.
+ *
+ * Revision 1.29  1999/10/03 18:52:45  rgb
+ * Spinlock support for 2.0.xx.
+ * Dumb return code spin_unlock fix.
+ *
+ * Revision 1.28  1999/10/01 16:22:24  rgb
+ * Switch from assignment init. to functional init. of spinlocks.
+ *
+ * Revision 1.27  1999/10/01 15:44:53  rgb
+ * Move spinlock header include to 2.1> scope.
+ *
+ * Revision 1.26  1999/10/01 00:01:23  rgb
+ * Added eroute structure locking.
+ *
+ * Revision 1.25  1999/06/10 16:07:30  rgb
+ * Silence delete eroute on no debug.
+ *
+ * Revision 1.24  1999/05/09 03:25:36  rgb
+ * Fix bug introduced by 2.2 quick-and-dirty patch.
+ *
+ * Revision 1.23  1999/05/05 22:02:31  rgb
+ * Add a quick and dirty port to 2.2 kernels by Marc Boucher <marc@mbsi.ca>.
+ *
+ * Revision 1.22  1999/04/29 15:17:23  rgb
+ * Add return values to init and cleanup functions.
+ * Add sanity checking for null pointer arguments.
+ *
+ * Revision 1.21  1999/04/11 00:28:58  henry
+ * GPL boilerplate
+ *
+ * Revision 1.20  1999/04/06 04:54:26  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.19  1999/02/17 16:50:35  rgb
+ * Clean out unused cruft.
+ * Consolidate for space and speed efficiency.
+ * Convert DEBUG_IPSEC to KLIPS_PRINT
+ *
+ * Revision 1.18  1999/01/22 06:22:06  rgb
+ * Cruft clean-out.
+ * 64-bit clean-up.
+ *
+ * Revision 1.17  1998/12/02 03:09:39  rgb
+ * Clean up debug printing conditionals to compile with debugging off.
+ *
+ * Revision 1.16  1998/12/01 13:49:39  rgb
+ * Wrap version info printing in debug switches.
+ *
+ * Revision 1.15  1998/11/30 13:22:54  rgb
+ * Rationalised all the klips kernel file headers.  They are much shorter
+ * now and won't conflict under RH5.2.
+ *
+ * Revision 1.14  1998/10/31 06:48:17  rgb
+ * Fixed up comments in #endif directives.
+ *
+ * Revision 1.13  1998/10/27 13:48:09  rgb
+ * Cleaned up /proc/net/ipsec_* filesystem for easy parsing by scripts.
+ * Fixed less(1) truncated output bug.
+ * Code clean-up.
+ *
+ * Revision 1.12  1998/10/25 02:41:36  rgb
+ * Change return type on ipsec_breakroute and ipsec_makeroute and add an
+ * argument to be able to transmit more infomation about errors.
+ * Fix cut-and-paste debug statement identifier.
+ *
+ * Revision 1.11  1998/10/22 06:45:39  rgb
+ * Cleaned up cruft.
+ * Convert to use satoa for printk.
+ *
+ * Revision 1.10  1998/10/19 14:44:28  rgb
+ * Added inclusion of freeswan.h.
+ * sa_id structure implemented and used: now includes protocol.
+ *
+ * Revision 1.9  1998/10/09 04:30:52  rgb
+ * Added 'klips_debug' prefix to all klips printk debug statements.
+ * Deleted old commented out cruft.
+ *
+ * Revision 1.8  1998/08/06 17:24:23  rgb
+ * Fix addrtoa return code bug from stale manpage advice preventing packets
+ * from being erouted.
+ *
+ * Revision 1.7  1998/08/06 07:44:59  rgb
+ * Fixed /proc/net/ipsec_eroute subnettoa and addrtoa return value bug that
+ * ended up in nothing being printed.
+ *
+ * Revision 1.6  1998/08/05 22:16:41  rgb
+ * Cleanup to prevent cosmetic errors (ie. debug output) from being fatal.
+ *
+ * Revision 1.5  1998/07/29 20:38:44  rgb
+ * Debug and fix subnettoa and addrtoa output.
+ *
+ * Revision 1.4  1998/07/28 00:02:39  rgb
+ * Converting to exclusive use of addrtoa.
+ * Fix eroute delete.
+ *
+ * Revision 1.3  1998/07/14 18:21:26  rgb
+ * Add function to clear the eroute table.
+ *
+ * Revision 1.2  1998/06/23 02:59:14  rgb
+ * Added debugging output to eroute add/delete routines.
+ *
+ * Revision 1.9  1998/06/18 21:29:06  henry
+ * move sources from klips/src to klips/net/ipsec, to keep stupid kernel
+ * build scripts happier in presence of symbolic links
+ *
+ * Revision 1.8  1998/06/05 02:32:26  rgb
+ * Fix spi ntoh kernel debug output.
+ *
+ * Revision 1.7  1998/05/25 20:30:37  rgb
+ * Remove temporary ipsec_walk, rj_deltree and rj_delnodes functions.
+ *
+ * Rename ipsec_rj_walker (ipsec_walk) to ipsec_rj_walker_procprint and
+ * add ipsec_rj_walker_delete.
+ *
+ * Revision 1.6  1998/05/21 13:08:57  rgb
+ * Rewrote procinfo subroutines to avoid *bad things* when more that 3k of
+ * information is available for printout.
+ *
+ * Revision 1.5  1998/05/18 21:35:55  rgb
+ * Clean up output for numerical consistency and readability.  Zero freed
+ * eroute memory.
+ *
+ * Revision 1.4  1998/04/21 21:28:58  rgb
+ * Rearrange debug switches to change on the fly debug output from user
+ * space.  Only kernel changes checked in at this time.  radij.c was also
+ * changed to temporarily remove buggy debugging code in rj_delete causing
+ * an OOPS and hence, netlink device open errors.
+ *
+ * Revision 1.3  1998/04/14 17:30:39  rgb
+ * Fix up compiling errors for radij tree memory reclamation.
+ *
+ * Revision 1.2  1998/04/12 22:03:23  rgb
+ * Updated ESP-3DES-HMAC-MD5-96,
+ *     ESP-DES-HMAC-MD5-96,
+ *     AH-HMAC-MD5-96,
+ *     AH-HMAC-SHA1-96 since Henry started freeswan cvs repository
+ * from old standards (RFC182[5-9] to new (as of March 1998) drafts.
+ *
+ * Fixed eroute references in /proc/net/ipsec*.
+ *
+ * Started to patch module unloading memory leaks in ipsec_netlink and
+ * radij tree unloading.
+ *
+ * Revision 1.1  1998/04/09 03:06:10  henry
+ * sources moved up from linux/net/ipsec
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:03  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.4  1997/01/15 01:28:15  ji
+ * No changes.
+ *
+ * Revision 0.3  1996/11/20 14:39:04  ji
+ * Minor cleanups.
+ * Rationalized debugging code.
+ *
+ * Revision 0.2  1996/11/02 00:18:33  ji
+ * First limited release.
+ *
+ *
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/ipsec_rcv.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,2340 @@
+/*
+ * receive code
+ * Copyright (C) 1996, 1997  John Ioannidis.
+ * Copyright (C) 1998-2003   Richard Guy Briggs.
+ * Copyright (C) 2004        Michael Richardson <mcr@xelerance.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+char ipsec_rcv_c_version[] = "RCSID $Id: ipsec_rcv.c,v 1.171.2.15 2007-10-30 21:37:45 paul Exp $";
+
+#ifndef AUTOCONF_INCLUDED
+#include <linux/config.h>
+#endif
+#include <linux/version.h>
+
+#define __NO_VERSION__
+#include <linux/module.h>
+#include <linux/kernel.h> /* printk() */
+
+#include "openswan/ipsec_param.h"
+
+#ifdef MALLOC_SLAB
+# include <linux/slab.h> /* kmalloc() */
+#else /* MALLOC_SLAB */
+# include <linux/malloc.h> /* kmalloc() */
+#endif /* MALLOC_SLAB */
+#include <linux/errno.h>  /* error codes */
+#include <linux/types.h>  /* size_t */
+#include <linux/interrupt.h> /* mark_bh */
+
+#include <linux/netdevice.h>   /* struct device, and other headers */
+#include <linux/etherdevice.h> /* eth_type_trans */
+#include <linux/ip.h>          /* struct iphdr */
+
+#include <net/tcp.h>
+#include <net/udp.h>
+#include <linux/skbuff.h>
+#include <openswan.h>
+#ifdef SPINLOCK
+# ifdef SPINLOCK_23
+#  include <linux/spinlock.h> /* *lock* */
+# else /* SPINLOCK_23 */
+#  include <asm/spinlock.h> /* *lock* */
+# endif /* SPINLOCK_23 */
+#endif /* SPINLOCK */
+
+#include <net/ip.h>
+
+#include "openswan/ipsec_kern24.h"
+#include "openswan/radij.h"
+#include "openswan/ipsec_encap.h"
+#include "openswan/ipsec_sa.h"
+
+#include "openswan/ipsec_radij.h"
+#include "openswan/ipsec_xform.h"
+#include "openswan/ipsec_tunnel.h"
+#include "openswan/ipsec_rcv.h"
+
+#include "openswan/ipsec_auth.h"
+
+#include "openswan/ipsec_esp.h"
+
+#ifdef CONFIG_KLIPS_AH
+#include "openswan/ipsec_ah.h"
+#endif /* CONFIG_KLIPS_AH */
+
+#ifdef CONFIG_KLIPS_IPCOMP
+#include "openswan/ipsec_ipcomp.h"
+#endif /* CONFIG_KLIPS_COMP */
+
+#include <pfkeyv2.h>
+#include <pfkey.h>
+
+#include "openswan/ipsec_proto.h"
+#include "openswan/ipsec_alg.h"
+#include "openswan/ipsec_kern24.h"
+
+#ifdef CONFIG_KLIPS_DEBUG
+int debug_rcv = 0;
+#endif /* CONFIG_KLIPS_DEBUG */
+
+int sysctl_ipsec_inbound_policy_check = 1;
+
+#ifdef CONFIG_IPSEC_NAT_TRAVERSAL
+#include <linux/udp.h>
+#endif
+
+/* This is a private use protocol, and AT&T should be ashamed. They should have
+ * used protocol # 59, which is "no next header" instead of 0xFE.
+ */
+#ifndef IPPROTO_ATT_HEARTBEAT
+#define IPPROTO_ATT_HEARTBEAT 0xFE
+#endif
+
+/*
+ * Check-replay-window routine, adapted from the original
+ * by J. Hughes, from draft-ietf-ipsec-esp-des-md5-03.txt
+ *
+ *  This is a routine that implements a 64 packet window. This is intend-
+ *  ed on being an implementation sample.
+ */
+
+DEBUG_NO_STATIC int
+ipsec_checkreplaywindow(struct ipsec_sa*ipsp, __u32 seq)
+{
+       __u32 diff;
+
+       if (ipsp->ips_replaywin == 0)   /* replay shut off */
+               return 1;
+       if (seq == 0)
+               return 0;               /* first == 0 or wrapped */
+
+       /* new larger sequence number */
+       if (seq > ipsp->ips_replaywin_lastseq) {
+               return 1;               /* larger is good */
+       }
+       diff = ipsp->ips_replaywin_lastseq - seq;
+
+       /* too old or wrapped */ /* if wrapped, kill off SA? */
+       if (diff >= ipsp->ips_replaywin) {
+               return 0;
+       }
+       /* this packet already seen */
+       if (ipsp->ips_replaywin_bitmap & (1 << diff))
+               return 0;
+       return 1;                       /* out of order but good */
+}
+
+DEBUG_NO_STATIC int
+ipsec_updatereplaywindow(struct ipsec_sa*ipsp, __u32 seq)
+{
+       __u32 diff;
+
+       if (ipsp->ips_replaywin == 0)   /* replay shut off */
+               return 1;
+       if (seq == 0)
+               return 0;               /* first == 0 or wrapped */
+
+       /* new larger sequence number */
+       if (seq > ipsp->ips_replaywin_lastseq) {
+               diff = seq - ipsp->ips_replaywin_lastseq;
+
+               /* In win, set bit for this pkt */
+               if (diff < ipsp->ips_replaywin)
+                       ipsp->ips_replaywin_bitmap =
+                               (ipsp->ips_replaywin_bitmap << diff) | 1;
+               else
+                       /* This packet has way larger seq num */
+                       ipsp->ips_replaywin_bitmap = 1;
+
+               if(seq - ipsp->ips_replaywin_lastseq - 1 > ipsp->ips_replaywin_maxdiff) {
+                       ipsp->ips_replaywin_maxdiff = seq - ipsp->ips_replaywin_lastseq - 1;
+               }
+               ipsp->ips_replaywin_lastseq = seq;
+               return 1;               /* larger is good */
+       }
+       diff = ipsp->ips_replaywin_lastseq - seq;
+
+       /* too old or wrapped */ /* if wrapped, kill off SA? */
+       if (diff >= ipsp->ips_replaywin) {
+/*
+               if(seq < 0.25*max && ipsp->ips_replaywin_lastseq > 0.75*max) {
+                       ipsec_sa_delchain(ipsp);
+               }
+*/
+               return 0;
+       }
+       /* this packet already seen */
+       if (ipsp->ips_replaywin_bitmap & (1 << diff))
+               return 0;
+       ipsp->ips_replaywin_bitmap |= (1 << diff);      /* mark as seen */
+       return 1;                       /* out of order but good */
+}
+
+#ifdef CONFIG_KLIPS_AUTH_HMAC_MD5
+struct auth_alg ipsec_rcv_md5[]={
+       {osMD5Init, osMD5Update, osMD5Final, AHMD596_ALEN}
+};
+
+#endif /* CONFIG_KLIPS_AUTH_HMAC_MD5 */
+
+#ifdef CONFIG_KLIPS_AUTH_HMAC_SHA1
+struct auth_alg ipsec_rcv_sha1[]={
+       {SHA1Init, SHA1Update, SHA1Final, AHSHA196_ALEN}
+};
+#endif /* CONFIG_KLIPS_AUTH_HMAC_MD5 */
+
+/*
+ * decapsulate a single layer of the system
+ *
+ * the following things should be setup to enter this function.
+ *
+ * irs->stats  == stats structure (or NULL)
+ * irs->ipp    = IP header.
+ * irs->len    = total length of packet
+ * skb->nh.iph = ipp;
+ * skb->h.raw  = start of payload
+ * irs->ipsp   = NULL.
+ * irs->iphlen = N/A = is recalculated.
+ * irs->ilen   = 0;
+ * irs->authlen = 0;
+ * irs->authfuncs = NULL;
+ * irs->skb    = the skb;
+ *
+ * proto_funcs should be from ipsec_esp.c, ipsec_ah.c or ipsec_ipcomp.c.
+ *
+ */
+enum ipsec_rcv_value
+ipsec_rcv_decap_once(struct ipsec_rcv_state *irs
+                    , struct xform_functions *proto_funcs)
+{
+       int iphlen;
+       __u8 proto;
+       struct in_addr ipsaddr;
+       struct in_addr ipdaddr;
+       int replay = 0; /* replay value in AH or ESP packet */
+       struct ipsec_sa* ipsnext = NULL;        /* next SA towards inside of packet */
+       struct ipsec_sa *newipsp;
+       struct iphdr *ipp;
+       struct sk_buff *skb;
+       struct ipsec_alg_auth *ixt_a=NULL;
+
+       skb = irs->skb;
+       irs->len = skb->len;
+       ipp = irs->ipp;
+       proto = ipp->protocol;
+       ipsaddr.s_addr = ipp->saddr;
+       addrtoa(ipsaddr, 0, irs->ipsaddr_txt, sizeof(irs->ipsaddr_txt));
+       ipdaddr.s_addr = ipp->daddr;
+       addrtoa(ipdaddr, 0, irs->ipdaddr_txt, sizeof(irs->ipdaddr_txt));
+
+       iphlen = ipp->ihl << 2;
+       irs->iphlen=iphlen;
+       ipp->check = 0;                 /* we know the sum is good */
+       
+       KLIPS_PRINT(debug_rcv,
+                   "klips_debug:ipsec_rcv_decap_once: "
+                   "decap (%d) from %s -> %s\n",
+                   proto, irs->ipsaddr_txt, irs->ipdaddr_txt);
+
+       /*
+        * Find tunnel control block and (indirectly) call the
+        * appropriate tranform routine. The resulting sk_buf
+        * is a valid IP packet ready to go through input processing.
+        */
+
+       irs->said.dst.u.v4.sin_addr.s_addr = ipp->daddr;
+       irs->said.dst.u.v4.sin_family = AF_INET;
+
+       /* note: rcv_checks set up the said.spi value, if appropriate */
+       if(proto_funcs->rcv_checks) {
+               enum ipsec_rcv_value retval =
+                 (*proto_funcs->rcv_checks)(irs, skb);
+
+               if(retval < 0) {
+                       return retval;
+               }
+       }
+
+       irs->said.proto = proto;
+       irs->sa_len = satot(&irs->said, 0, irs->sa, sizeof(irs->sa));
+       if(irs->sa_len == 0) {
+               strcpy(irs->sa, "(error)");
+       }
+
+       newipsp = ipsec_sa_getbyid(&irs->said);
+       if (newipsp == NULL) {
+               KLIPS_PRINT(debug_rcv,
+                           "klips_debug:ipsec_rcv: "
+                           "no ipsec_sa for SA:%s: incoming packet with no SA dropped\n",
+                           irs->sa_len ? irs->sa : " (error)");
+               if(irs->stats) {
+                       irs->stats->rx_dropped++;
+               }
+               return IPSEC_RCV_SAIDNOTFOUND;
+       }
+
+       /* MCR - XXX this is bizarre. ipsec_sa_getbyid returned it, having
+        * incremented the refcount, why in the world would we decrement it
+        * here? */
+       /* ipsec_sa_put(irs->ipsp);*/ /* incomplete */
+
+       /* If it is in larval state, drop the packet, we cannot process yet. */
+       if(newipsp->ips_state == SADB_SASTATE_LARVAL) {
+               KLIPS_PRINT(debug_rcv,
+                           "klips_debug:ipsec_rcv: "
+                           "ipsec_sa in larval state, cannot be used yet, dropping packet.\n");
+               if(irs->stats) {
+                       irs->stats->rx_dropped++;
+               }
+               ipsec_sa_put(newipsp);
+               return IPSEC_RCV_SAIDNOTLIVE;
+       }
+
+       if(newipsp->ips_state == SADB_SASTATE_DEAD) {
+               KLIPS_PRINT(debug_rcv,
+                           "klips_debug:ipsec_rcv: "
+                           "ipsec_sa in dead state, cannot be used any more, dropping packet.\n");
+               if(irs->stats) {
+                       irs->stats->rx_dropped++;
+               }
+               ipsec_sa_put(newipsp);
+               return IPSEC_RCV_SAIDNOTLIVE;
+       }
+
+       if(sysctl_ipsec_inbound_policy_check) {
+               if(irs->ipp->saddr != ((struct sockaddr_in*)(newipsp->ips_addr_s))->sin_addr.s_addr) {
+                       KLIPS_PRINT(debug_rcv,
+                                   "klips_debug:ipsec_rcv: "
+                                   "SA:%s, src=%s of pkt does not agree with expected SA source address policy.\n",
+                                   irs->sa_len ? irs->sa : " (error)",
+                                   irs->ipsaddr_txt);
+                       if(irs->stats) {
+                               irs->stats->rx_dropped++;
+                       }
+                       ipsec_sa_put(newipsp);
+                       return IPSEC_RCV_FAILEDINBOUND;
+               }
+
+               KLIPS_PRINT(debug_rcv,
+                           "klips_debug:ipsec_rcv: "
+                           "SA:%s, src=%s of pkt agrees with expected SA source address policy.\n",
+                           irs->sa_len ? irs->sa : " (error)",
+                           irs->ipsaddr_txt);
+
+               /*
+                * at this point, we have looked up a new SA, and we want to make sure that if this
+                * isn't the first SA in the list, that the previous SA actually points at this one.
+                */
+               if(irs->ipsp) {
+                       if(irs->ipsp->ips_inext != newipsp) {
+                               KLIPS_PRINT(debug_rcv,
+                                           "klips_debug:ipsec_rcv: "
+                                           "unexpected SA:%s: does not agree with ips->inext policy, dropped\n",
+                                           irs->sa_len ? irs->sa : " (error)");
+                               if(irs->stats) {
+                                       irs->stats->rx_dropped++;
+                               }
+                               ipsec_sa_put(newipsp);
+                               return IPSEC_RCV_FAILEDINBOUND;
+                       }
+                       KLIPS_PRINT(debug_rcv,
+                                   "klips_debug:ipsec_rcv: "
+                                   "SA:%s grouping from previous SA is OK.\n",
+                                   irs->sa_len ? irs->sa : " (error)");
+               } else {
+                       KLIPS_PRINT(debug_rcv,
+                                   "klips_debug:ipsec_rcv: "
+                                   "SA:%s First SA in group.\n",
+                                   irs->sa_len ? irs->sa : " (error)");
+               }
+
+
+
+
+
+#ifdef CONFIG_IPSEC_NAT_TRAVERSAL
+               if (proto == IPPROTO_ESP) {
+                       KLIPS_PRINT(debug_rcv,
+                               "klips_debug:ipsec_rcv: "
+                               "natt_type=%u tdbp->ips_natt_type=%u : %s\n",
+                               irs->natt_type, newipsp->ips_natt_type,
+                               (irs->natt_type==newipsp->ips_natt_type)?"ok":"bad");
+                       if (irs->natt_type != newipsp->ips_natt_type) {
+                               KLIPS_PRINT(debug_rcv,
+                                           "klips_debug:ipsec_rcv: "
+                                           "SA:%s does not agree with expected NAT-T policy.\n",
+                                           irs->sa_len ? irs->sa : " (error)");
+                               if(irs->stats) {
+                                       irs->stats->rx_dropped++;
+                               }
+                               ipsec_sa_put(newipsp);
+                               return IPSEC_RCV_FAILEDINBOUND;
+                       }
+               }
+#endif          
+       }
+
+       /* okay, SA checks out, so free any previous SA, and record a new one*/
+
+       if(irs->ipsp) {
+               ipsec_sa_put(irs->ipsp);
+       }
+       irs->ipsp=newipsp;
+
+       /* note that the outer code will free the irs->ipsp
+          if there is an error */
+
+
+       /* now check the lifetimes */
+       if(ipsec_lifetime_check(&irs->ipsp->ips_life.ipl_bytes,   "bytes",
+                               irs->sa, ipsec_life_countbased, ipsec_incoming,
+                               irs->ipsp) == ipsec_life_harddied ||
+          ipsec_lifetime_check(&irs->ipsp->ips_life.ipl_addtime, "addtime",
+                               irs->sa, ipsec_life_timebased,  ipsec_incoming,
+                               irs->ipsp) == ipsec_life_harddied ||
+          ipsec_lifetime_check(&irs->ipsp->ips_life.ipl_addtime, "usetime",
+                               irs->sa, ipsec_life_timebased,  ipsec_incoming,
+                               irs->ipsp) == ipsec_life_harddied ||
+          ipsec_lifetime_check(&irs->ipsp->ips_life.ipl_packets, "packets",
+                               irs->sa, ipsec_life_countbased, ipsec_incoming,
+                               irs->ipsp) == ipsec_life_harddied) {
+               ipsec_sa_delchain(irs->ipsp);
+               if(irs->stats) {
+                       irs->stats->rx_dropped++;
+               }
+               
+               KLIPS_PRINT(debug_rcv,
+                           "klips_debug:ipsec_rcv_decap_once: "
+                           "decap (%d) failed lifetime check\n",
+                           proto);
+
+               return IPSEC_RCV_LIFETIMEFAILED;
+       }
+
+#if 0
+       /*
+        * This is removed for some reasons:
+        *   1) it needs to happen *after* authentication.
+        *   2) do we really care, if it authenticates, if it came
+        *      from the wrong location?
+         *   3) the NAT_KA messages in IKE will also get to pluto
+        *      and it will figure out that stuff has moved.
+        *   4) the 2.6 udp-esp encap function does not pass us
+        *      the originating port number, and I can't tell
+        *      if skb->sk is guaranteed to be valid here.
+        *  2005-04-16: mcr@xelerance.com
+        */
+#ifdef CONFIG_IPSEC_NAT_TRAVERSAL
+       /*
+        *
+        * XXX we should ONLY update pluto if the SA passes all checks,
+        *     which we clearly do not now.
+        */
+       if ((irs->natt_type) &&
+               ( (irs->ipp->saddr != (((struct sockaddr_in*)(newipsp->ips_addr_s))->sin_addr.s_addr)) ||
+                 (irs->natt_sport != newipsp->ips_natt_sport)
+               )) {
+               struct sockaddr sipaddr;
+               struct sockaddr_in *psin = (struct sockaddr_in*)(newipsp->ips_addr_s);
+
+               /** Advertise NAT-T addr change to pluto **/
+               sipaddr.sa_family = AF_INET;
+               ((struct sockaddr_in*)&sipaddr)->sin_addr.s_addr = irs->ipp->saddr;
+               ((struct sockaddr_in*)&sipaddr)->sin_port = htons(irs->natt_sport);
+               pfkey_nat_t_new_mapping(newipsp, &sipaddr, irs->natt_sport);
+
+               /**
+                * Then allow or block packet depending on
+                * sysctl_ipsec_inbound_policy_check.
+                *
+                * In all cases, pluto will update SA if new mapping is
+                * accepted.
+                */
+               if (sysctl_ipsec_inbound_policy_check) {
+                       KLIPS_PRINT(debug_rcv,
+                               "klips_debug:ipsec_rcv: "
+                               "SA:%s, src=%s:%u of pkt does not agree with expected "
+                               "SA source address [%08x:%u] (notifying pluto of change).\n",
+                               irs->sa_len ? irs->sa : " (error)",
+                                   irs->ipsaddr_txt, irs->natt_sport,
+                                   psin->sin_addr.s_addr,
+                                   newipsp->ips_natt_sport);
+                       if(irs->stats) {
+                               irs->stats->rx_dropped++;
+                       }
+                       ipsec_sa_put(newipsp);
+                       return IPSEC_RCV_FAILEDINBOUND;
+               }
+       }
+#endif
+#endif
+
+       irs->authfuncs=NULL;
+
+       /* authenticate, if required */
+       if ((ixt_a=irs->ipsp->ips_alg_auth)) {
+               irs->authlen = AHHMAC_HASHLEN;
+               irs->authfuncs = NULL;
+               irs->ictx = NULL;
+               irs->octx = NULL;
+               irs->ictx_len = 0;
+               irs->octx_len = 0;
+               KLIPS_PRINT(debug_rcv,
+                               "klips_debug:ipsec_rcv: "
+                               "authalg=%d authlen=%d\n",
+                               irs->ipsp->ips_authalg, 
+                               irs->authlen);
+       } else
+       switch(irs->ipsp->ips_authalg) {
+#ifdef CONFIG_KLIPS_AUTH_HMAC_MD5
+       case AH_MD5:
+               irs->authlen = AHHMAC_HASHLEN;
+               irs->authfuncs = ipsec_rcv_md5;
+               irs->ictx = (void *)&((struct md5_ctx*)(irs->ipsp->ips_key_a))->ictx;
+               irs->octx = (void *)&((struct md5_ctx*)(irs->ipsp->ips_key_a))->octx;
+               irs->ictx_len = sizeof(((struct md5_ctx*)(irs->ipsp->ips_key_a))->ictx);
+               irs->octx_len = sizeof(((struct md5_ctx*)(irs->ipsp->ips_key_a))->octx);
+               break;
+#endif /* CONFIG_KLIPS_AUTH_HMAC_MD5 */
+#ifdef CONFIG_KLIPS_AUTH_HMAC_SHA1
+       case AH_SHA:
+               irs->authlen = AHHMAC_HASHLEN;
+               irs->authfuncs = ipsec_rcv_sha1;
+               irs->ictx = (void *)&((struct sha1_ctx*)(irs->ipsp->ips_key_a))->ictx;
+               irs->octx = (void *)&((struct sha1_ctx*)(irs->ipsp->ips_key_a))->octx;
+               irs->ictx_len = sizeof(((struct sha1_ctx*)(irs->ipsp->ips_key_a))->ictx);
+               irs->octx_len = sizeof(((struct sha1_ctx*)(irs->ipsp->ips_key_a))->octx);
+               break;
+#endif /* CONFIG_KLIPS_AUTH_HMAC_SHA1 */
+       case AH_NONE:
+               irs->authlen = 0;
+               irs->authfuncs = NULL;
+               irs->ictx = NULL;
+               irs->octx = NULL;
+               irs->ictx_len = 0;
+               irs->octx_len = 0;
+               break;
+       default:
+               irs->ipsp->ips_errs.ips_alg_errs += 1;
+               if(irs->stats) {
+                       irs->stats->rx_errors++;
+               }
+               return IPSEC_RCV_BADAUTH;
+       }
+
+       /* ilen counts number of bytes in ESP portion */
+       irs->ilen = ((irs->skb->data + irs->skb->len) - skb_transport_header(irs->skb)) - irs->authlen;
+       if(irs->ilen <= 0) {
+         KLIPS_PRINT(debug_rcv,
+                     "klips_debug:ipsec_rcv: "
+                     "runt %s packet with no data, dropping.\n",
+                     (proto == IPPROTO_ESP ? "esp" : "ah"));
+         if(irs->stats) {
+           irs->stats->rx_dropped++;
+         }
+         return IPSEC_RCV_BADLEN;
+       }
+
+       if(irs->authfuncs || ixt_a) {
+               unsigned char *authenticator = NULL;
+
+               if(proto_funcs->rcv_setup_auth) {
+                       enum ipsec_rcv_value retval
+                           = (*proto_funcs->rcv_setup_auth)(irs, skb,
+                                                        &replay,
+                                                        &authenticator);
+                       if(retval < 0) {
+                               return retval;
+                       }
+               }
+
+               if(!authenticator) {
+                       irs->ipsp->ips_errs.ips_auth_errs += 1;
+                       if(irs->stats) {
+                               irs->stats->rx_dropped++;
+                       }
+                       return IPSEC_RCV_BADAUTH;
+               }
+
+               if(!ipsec_checkreplaywindow(irs->ipsp, replay)) {
+                       irs->ipsp->ips_errs.ips_replaywin_errs += 1;
+                       KLIPS_PRINT(debug_rcv & DB_RX_REPLAY,
+                                   "klips_debug:ipsec_rcv: "
+                                   "duplicate frame from %s, packet dropped\n",
+                                   irs->ipsaddr_txt);
+                       if(irs->stats) {
+                               irs->stats->rx_dropped++;
+                       }
+                       return IPSEC_RCV_REPLAYFAILED;
+               }
+
+               /*
+                * verify authenticator
+                */
+
+               KLIPS_PRINT(debug_rcv,
+                           "klips_debug:ipsec_rcv: "
+                           "encalg = %d, authalg = %d.\n",
+                           irs->ipsp->ips_encalg,
+                           irs->ipsp->ips_authalg);
+
+               /* calculate authenticator */
+               if(proto_funcs->rcv_calc_auth == NULL) {
+                       return IPSEC_RCV_BADAUTH;
+               }
+               (*proto_funcs->rcv_calc_auth)(irs, skb);
+
+               if (memcmp(irs->hash, authenticator, irs->authlen)) {
+                       irs->ipsp->ips_errs.ips_auth_errs += 1;
+                       KLIPS_PRINT(debug_rcv & DB_RX_INAU,
+                                   "klips_debug:ipsec_rcv: "
+                                   "auth failed on incoming packet from %s: hash=%08x%08x%08x auth=%08x%08x%08x, dropped\n",
+                                   irs->ipsaddr_txt,
+                                   ntohl(*(__u32*)&irs->hash[0]),
+                                   ntohl(*(__u32*)&irs->hash[4]),
+                                   ntohl(*(__u32*)&irs->hash[8]),
+                                   ntohl(*(__u32*)authenticator),
+                                   ntohl(*((__u32*)authenticator + 1)),
+                                   ntohl(*((__u32*)authenticator + 2)));
+                       if(irs->stats) {
+                               irs->stats->rx_dropped++;
+                       }
+                       return IPSEC_RCV_AUTHFAILED;
+               } else {
+                       KLIPS_PRINT(debug_rcv,
+                                   "klips_debug:ipsec_rcv: "
+                                   "authentication successful.\n");
+               }
+
+               /* Crypto hygiene: clear memory used to calculate autheticator.
+                * The length varies with the algorithm.
+                */
+               memset(irs->hash, 0, irs->authlen);
+
+               /* If the sequence number == 0, expire SA, it had rolled */
+               if(irs->ipsp->ips_replaywin && !replay /* !irs->ipsp->ips_replaywin_lastseq */) {
+                       ipsec_sa_delchain(irs->ipsp);
+                       KLIPS_PRINT(debug_rcv,
+                                   "klips_debug:ipsec_rcv: "
+                                   "replay window counter rolled, expiring SA.\n");
+                       if(irs->stats) {
+                               irs->stats->rx_dropped++;
+                       }
+                       return IPSEC_RCV_REPLAYROLLED;
+               }
+
+               /* now update the replay counter */
+               if (!ipsec_updatereplaywindow(irs->ipsp, replay)) {
+                       irs->ipsp->ips_errs.ips_replaywin_errs += 1;
+                       KLIPS_PRINT(debug_rcv & DB_RX_REPLAY,
+                                   "klips_debug:ipsec_rcv: "
+                                   "duplicate frame from %s, packet dropped\n",
+                                   irs->ipsaddr_txt);
+                       if(irs->stats) {
+                               irs->stats->rx_dropped++;
+                       }
+                       return IPSEC_RCV_REPLAYROLLED;
+               }
+       }
+
+       if(proto_funcs->rcv_decrypt) {
+               enum ipsec_rcv_value retval =
+                 (*proto_funcs->rcv_decrypt)(irs);
+
+               if(retval != IPSEC_RCV_OK) {
+                       return retval;
+               }
+       }
+
+       /*
+        *      Adjust pointers
+        */
+       skb = irs->skb;
+       irs->len = skb->len;
+       ipp = irs->ipp = ip_hdr(skb);
+       irs->iphlen = ipp->ihl<<2;
+       skb_set_transport_header(skb, ipsec_skb_offset(skb, skb_network_header(skb) + irs->iphlen));
+       
+       /* zero any options that there might be */
+       memset(&(IPCB(skb)->opt), 0, sizeof(struct ip_options));
+
+       ipsaddr.s_addr = ipp->saddr;
+       addrtoa(ipsaddr, 0, irs->ipsaddr_txt, sizeof(irs->ipsaddr_txt));
+       ipdaddr.s_addr = ipp->daddr;
+       addrtoa(ipdaddr, 0, irs->ipdaddr_txt, sizeof(irs->ipdaddr_txt));
+
+       /*
+        *      Discard the original ESP/AH header
+        */
+       ipp->protocol = irs->next_header;
+
+       ipp->check = 0; /* NOTE: this will be included in checksum */
+       ipp->check = ip_fast_csum((unsigned char *)ip_hdr(skb), irs->iphlen >> 2);
+
+       KLIPS_PRINT(debug_rcv & DB_RX_PKTRX,
+                   "klips_debug:ipsec_rcv: "
+                   "after <%s%s%s>, SA:%s:\n",
+                   IPS_XFORM_NAME(irs->ipsp),
+                   irs->sa_len ? irs->sa : " (error)");
+       KLIPS_IP_PRINT(debug_rcv & DB_RX_PKTRX, ipp);
+
+       skb->protocol = htons(ETH_P_IP);
+       skb->ip_summed = 0;
+
+       ipsnext = irs->ipsp->ips_inext;
+       if(sysctl_ipsec_inbound_policy_check) {
+               if(ipsnext) {
+                       if(
+                               ipp->protocol != IPPROTO_AH
+                               && ipp->protocol != IPPROTO_ESP
+#ifdef CONFIG_KLIPS_IPCOMP
+                               && ipp->protocol != IPPROTO_COMP
+                               && (ipsnext->ips_said.proto != IPPROTO_COMP
+                                   || ipsnext->ips_inext)
+#endif /* CONFIG_KLIPS_IPCOMP */
+                               && ipp->protocol != IPPROTO_IPIP
+                               && ipp->protocol != IPPROTO_ATT_HEARTBEAT  /* heartbeats to AT&T SIG/GIG */
+                               ) {
+                               KLIPS_PRINT(debug_rcv,
+                                           "klips_debug:ipsec_rcv: "
+                                           "packet with incomplete policy dropped, last successful SA:%s.\n",
+                                           irs->sa_len ? irs->sa : " (error)");
+                               if(irs->stats) {
+                                       irs->stats->rx_dropped++;
+                               }
+                               return IPSEC_RCV_FAILEDINBOUND;
+                       }
+                       KLIPS_PRINT(debug_rcv,
+                                   "klips_debug:ipsec_rcv: "
+                                   "SA:%s, Another IPSEC header to process.\n",
+                                   irs->sa_len ? irs->sa : " (error)");
+               } else {
+                       KLIPS_PRINT(debug_rcv,
+                                   "klips_debug:ipsec_rcv: "
+                                   "No ips_inext from this SA:%s.\n",
+                                   irs->sa_len ? irs->sa : " (error)");
+               }
+       }
+
+#ifdef CONFIG_KLIPS_IPCOMP
+       /* update ipcomp ratio counters, even if no ipcomp packet is present */
+       if (ipsnext
+           && ipsnext->ips_said.proto == IPPROTO_COMP
+           && ipp->protocol != IPPROTO_COMP) {
+               ipsnext->ips_comp_ratio_cbytes += ntohs(ipp->tot_len);
+               ipsnext->ips_comp_ratio_dbytes += ntohs(ipp->tot_len);
+       }
+#endif /* CONFIG_KLIPS_IPCOMP */
+
+       irs->ipsp->ips_life.ipl_bytes.ipl_count += irs->len;
+       irs->ipsp->ips_life.ipl_bytes.ipl_last   = irs->len;
+
+       if(!irs->ipsp->ips_life.ipl_usetime.ipl_count) {
+               irs->ipsp->ips_life.ipl_usetime.ipl_count = jiffies / HZ;
+       }
+       irs->ipsp->ips_life.ipl_usetime.ipl_last = jiffies / HZ;
+       irs->ipsp->ips_life.ipl_packets.ipl_count += 1;
+
+#ifdef CONFIG_NETFILTER
+       if(proto == IPPROTO_ESP || proto == IPPROTO_AH) {
+               skb->nfmark = (skb->nfmark & (~(IPsecSAref2NFmark(IPSEC_SA_REF_MASK))))
+                       | IPsecSAref2NFmark(IPsecSA2SAref(irs->ipsp));
+               KLIPS_PRINT(debug_rcv & DB_RX_PKTRX,
+                           "klips_debug:ipsec_rcv: "
+                           "%s SA sets skb->nfmark=0x%x.\n",
+                           proto == IPPROTO_ESP ? "ESP" : "AH",
+                           (unsigned)skb->nfmark);
+       }
+#endif /* CONFIG_NETFILTER */
+
+       return IPSEC_RCV_OK;
+}
+
+
+/*
+ * core decapsulation loop for all protocols.
+ *
+ * the following things should be setup to enter this function.
+ *
+ * irs->stats  == stats structure (or NULL)
+ * irs->ipp    = IP header.
+ * irs->ipsp   = NULL.
+ * irs->ilen   = 0;
+ * irs->authlen = 0;
+ * irs->authfuncs = NULL;
+ * irs->skb    = skb;
+ * skb->nh.iph = ipp;
+ * skb->h.raw  = start of payload
+ *
+ */
+int ipsec_rcv_decap(struct ipsec_rcv_state *irs)
+{
+       struct ipsec_sa *ipsp = NULL;
+       struct ipsec_sa* ipsnext = NULL;
+       struct in_addr ipsaddr;
+       struct in_addr ipdaddr;
+       struct iphdr *ipp;
+       struct sk_buff *skb = NULL;
+
+       /* begin decapsulating loop here */
+
+       /*
+         The spinlock is to prevent any other process from
+         accessing or deleting the ipsec_sa hash table or any of the
+         ipsec_sa s while we are using and updating them.
+
+         This is not optimal, but was relatively straightforward
+         at the time.  A better way to do it has been planned for
+         more than a year, to lock the hash table and put reference
+         counts on each ipsec_sa instead.  This is not likely to happen
+         in KLIPS1 unless a volunteer contributes it, but will be
+         designed into KLIPS2.
+       */
+       spin_lock(&tdb_lock);
+
+       do {
+               int decap_stat;
+               struct xform_functions *proto_funcs;
+
+               switch(irs->ipp->protocol) {
+               case IPPROTO_ESP:
+                 proto_funcs = esp_xform_funcs;
+                 break;
+                 
+#ifdef CONFIG_KLIPS_AH
+               case IPPROTO_AH:
+                 proto_funcs = ah_xform_funcs;
+                 break;
+#endif /* !CONFIG_KLIPS_AH */
+                 
+#ifdef CONFIG_KLIPS_IPCOMP
+               case IPPROTO_COMP:
+                 proto_funcs = ipcomp_xform_funcs;
+                 break;
+#endif /* !CONFIG_KLIPS_IPCOMP */
+               default:
+                 if(irs->stats) {
+                   irs->stats->rx_errors++;
+                 }
+                 decap_stat = IPSEC_RCV_BADPROTO;
+                 goto rcvleave;
+               }
+
+               decap_stat = ipsec_rcv_decap_once(irs, proto_funcs);
+
+               if(decap_stat != IPSEC_RCV_OK) {
+                       spin_unlock(&tdb_lock);
+                       KLIPS_PRINT(debug_rcv,
+                                   "klips_debug:ipsec_rcv: decap_once failed: %d\n",
+                                   decap_stat);
+               
+                       goto rcvleave;
+               }
+       /* end decapsulation loop here */
+       } while(   (irs->ipp->protocol == IPPROTO_ESP )
+               || (irs->ipp->protocol == IPPROTO_AH  )
+#ifdef CONFIG_KLIPS_IPCOMP
+               || (irs->ipp->protocol == IPPROTO_COMP)
+#endif /* CONFIG_KLIPS_IPCOMP */
+               );
+
+       /* set up for decap loop */
+       ipp  =irs->ipp;
+       ipsp =irs->ipsp;
+       ipsnext = ipsp->ips_inext;
+       skb = irs->skb;
+
+       /* if there is an IPCOMP, but we don't have an IPPROTO_COMP,
+        * then we can just skip it
+        */
+#ifdef CONFIG_KLIPS_IPCOMP
+       if(ipsnext && ipsnext->ips_said.proto == IPPROTO_COMP) {
+               ipsp = ipsnext;
+               ipsnext = ipsp->ips_inext;
+       }
+#endif /* CONFIG_KLIPS_IPCOMP */
+
+#ifdef CONFIG_IPSEC_NAT_TRAVERSAL
+       if ((irs->natt_type) && (ipp->protocol != IPPROTO_IPIP)) {
+         /**
+          * NAT-Traversal and Transport Mode:
+          *   we need to correct TCP/UDP checksum
+          *
+          * If we've got NAT-OA, we can fix checksum without recalculation.
+          */
+         __u32 natt_oa = ipsp->ips_natt_oa ?
+           ((struct sockaddr_in*)(ipsp->ips_natt_oa))->sin_addr.s_addr : 0;
+         __u16 pkt_len = skb_tail_pointer(skb) - (unsigned char *)ipp;
+         __u16 data_len = pkt_len - (ipp->ihl << 2);
+         
+         switch (ipp->protocol) {
+         case IPPROTO_TCP:
+           if (data_len >= sizeof(struct tcphdr)) {
+             struct tcphdr *tcp = tcp_hdr(skb);
+             if (natt_oa) {
+               __u32 buff[2] = { ~natt_oa, ipp->saddr };
+               KLIPS_PRINT(debug_rcv,
+                           "klips_debug:ipsec_rcv: "
+                           "NAT-T & TRANSPORT: "
+                           "fix TCP checksum using NAT-OA\n");
+               tcp->check = csum_fold(
+                                      csum_partial((unsigned char *)buff, sizeof(buff),
+                                                   tcp->check^0xffff));
+             }
+             else {
+               KLIPS_PRINT(debug_rcv,
+                           "klips_debug:ipsec_rcv: "
+                           "NAT-T & TRANSPORT: recalc TCP checksum\n");
+               if (pkt_len > (ntohs(ipp->tot_len)))
+                 data_len -= (pkt_len - ntohs(ipp->tot_len));
+               tcp->check = 0;
+               tcp->check = csum_tcpudp_magic(ipp->saddr, ipp->daddr,
+                                              data_len, IPPROTO_TCP,
+                                              csum_partial((unsigned char *)tcp, data_len, 0));
+             }
+           }
+           else {
+             KLIPS_PRINT(debug_rcv,
+                         "klips_debug:ipsec_rcv: "
+                         "NAT-T & TRANSPORT: can't fix TCP checksum\n");
+           }
+           break;
+         case IPPROTO_UDP:
+           if (data_len >= sizeof(struct udphdr)) {
+             struct udphdr *udp = udp_hdr(skb);
+             if (udp->check == 0) {
+               KLIPS_PRINT(debug_rcv,
+                           "klips_debug:ipsec_rcv: "
+                           "NAT-T & TRANSPORT: UDP checksum already 0\n");
+             }
+             else if (natt_oa) {
+               KLIPS_PRINT(debug_rcv,
+                           "klips_debug:ipsec_rcv: "
+                           "NAT-T & TRANSPORT: "
+                           "fix UDP checksum using NAT-OA\n");
+#ifdef DISABLE_UDP_CHECKSUM
+               udp->check=0;
+               KLIPS_PRINT(debug_rcv,
+                           "klips_debug:ipsec_rcv: "
+                           "NAT-T & TRANSPORT: "
+                           "UDP checksum using NAT-OA disabled at compile time\n");
+#else
+               {
+                   __u32 buff[2] = { ~natt_oa, ipp->saddr };
+
+                   udp->check = csum_fold(
+                                          csum_partial((unsigned char *)buff, sizeof(buff),
+                                                       udp->check^0xffff));
+               }
+#endif
+             }
+             else {
+               KLIPS_PRINT(debug_rcv,
+                           "klips_debug:ipsec_rcv: "
+                           "NAT-T & TRANSPORT: zero UDP checksum\n");
+               udp->check = 0;
+             }
+           }
+           else {
+             KLIPS_PRINT(debug_rcv,
+                         "klips_debug:ipsec_rcv: "
+                         "NAT-T & TRANSPORT: can't fix UDP checksum\n");
+           }
+           break;
+         default:
+           KLIPS_PRINT(debug_rcv,
+                       "klips_debug:ipsec_rcv: "
+                       "NAT-T & TRANSPORT: non TCP/UDP packet -- do nothing\n");
+           break;
+         }
+       }
+#endif
+
+       /*
+        * XXX this needs to be locked from when it was first looked
+        * up in the decapsulation loop.  Perhaps it is better to put
+        * the IPIP decap inside the loop.
+        */
+       if(ipsnext) {
+               ipsp = ipsnext;
+               irs->sa_len = KLIPS_SATOT(debug_rcv, &irs->said, 0, irs->sa, sizeof(irs->sa));
+               if((ipp->protocol != IPPROTO_IPIP) && 
+                   (ipp->protocol != IPPROTO_ATT_HEARTBEAT)) {  /* AT&T heartbeats to SIG/GIG */
+                       spin_unlock(&tdb_lock);
+                       KLIPS_PRINT(debug_rcv,
+                                   "klips_debug:ipsec_rcv: "
+                                   "SA:%s, Hey!  How did this get through?  Dropped.\n",
+                                   irs->sa_len ? irs->sa : " (error)");
+                       if(irs->stats) {
+                               irs->stats->rx_dropped++;
+                       }
+                       goto rcvleave;
+               }
+               if(sysctl_ipsec_inbound_policy_check) {
+                       struct sockaddr_in *psin = (struct sockaddr_in*)(ipsp->ips_addr_s);
+                       if((ipsnext = ipsp->ips_inext)) {
+                               char sa2[SATOT_BUF];
+                               size_t sa_len2;
+                               sa_len2 = KLIPS_SATOT(debug_rcv, &ipsnext->ips_said, 0, sa2, sizeof(sa2));
+                               spin_unlock(&tdb_lock);
+                               KLIPS_PRINT(debug_rcv,
+                                           "klips_debug:ipsec_rcv: "
+                                           "unexpected SA:%s after IPIP SA:%s\n",
+                                           sa_len2 ? sa2 : " (error)",
+                                           irs->sa_len ? irs->sa : " (error)");
+                               if(irs->stats) {
+                                       irs->stats->rx_dropped++;
+                               }
+                               goto rcvleave;
+                       }
+                       if(ipp->saddr != psin->sin_addr.s_addr) {
+                               spin_unlock(&tdb_lock);
+                               KLIPS_PRINT(debug_rcv,
+                                           "klips_debug:ipsec_rcv: "
+                                           "SA:%s, src=%s(%08x) does not match expected 0x%08x.\n",
+                                           irs->sa_len ? irs->sa : " (error)",
+                                           irs->ipsaddr_txt, 
+                                           ipp->saddr, psin->sin_addr.s_addr);
+                               if(irs->stats) {
+                                       irs->stats->rx_dropped++;
+                               }
+                               goto rcvleave;
+                       }
+               }
+
+       if(ipp->protocol == IPPROTO_IPIP)  /* added to support AT&T heartbeats to SIG/GIG */
+       {  
+               /*
+                * XXX this needs to be locked from when it was first looked
+                * up in the decapsulation loop.  Perhaps it is better to put
+                * the IPIP decap inside the loop.
+                */
+               ipsp->ips_life.ipl_bytes.ipl_count += skb->len;
+               ipsp->ips_life.ipl_bytes.ipl_last   = skb->len;
+
+               if(!ipsp->ips_life.ipl_usetime.ipl_count) {
+                       ipsp->ips_life.ipl_usetime.ipl_count = jiffies / HZ;
+               }
+               ipsp->ips_life.ipl_usetime.ipl_last = jiffies / HZ;
+               ipsp->ips_life.ipl_packets.ipl_count += 1;
+
+               if(skb->len < irs->iphlen) {
+                       spin_unlock(&tdb_lock);
+                       printk(KERN_WARNING "klips_debug:ipsec_rcv: "
+                              "tried to skb_pull iphlen=%d, %d available.  This should never happen, please report.\n",
+                              irs->iphlen,
+                              (int)(skb->len));
+
+                       goto rcvleave;
+               }
+
+               /*
+                * we need to pull up by size of IP header,
+                * options, but also by any UDP/ESP encap there might
+                * have been, and this deals with all cases.
+                */
+               skb_pull(skb, (skb_transport_header(skb) - skb_network_header(skb)));
+
+               /* new L3 header is where L4 payload was */
+               skb_set_network_header(skb, ipsec_skb_offset(skb, skb_transport_header(skb)));
+
+               /* now setup new L4 payload location */
+               ipp = (struct iphdr *)skb_network_header(skb);
+               skb_set_transport_header(skb, ipsec_skb_offset(skb, skb_network_header(skb) + (ipp->ihl << 2)));
+
+
+               /* remove any saved options that we might have,
+                * since we have a new IP header.
+                */
+               memset(&(IPCB(skb)->opt), 0, sizeof(struct ip_options));
+
+#if 0
+               KLIPS_PRINT(debug_rcv, "csum: %d\n", ip_fast_csum((u8 *)ipp, ipp->ihl));
+#endif
+
+               /* re-do any strings for debugging */
+               ipsaddr.s_addr = ipp->saddr;
+               if (debug_rcv)
+                       addrtoa(ipsaddr, 0, irs->ipsaddr_txt, sizeof(irs->ipsaddr_txt));
+               ipdaddr.s_addr = ipp->daddr;
+               if (debug_rcv)
+                       addrtoa(ipdaddr, 0, irs->ipdaddr_txt, sizeof(irs->ipdaddr_txt));
+
+               skb->protocol = htons(ETH_P_IP);
+               skb->ip_summed = 0;
+               KLIPS_PRINT(debug_rcv & DB_RX_PKTRX,
+                           "klips_debug:ipsec_rcv: "
+                           "IPIP tunnel stripped.\n");
+               KLIPS_IP_PRINT(debug_rcv & DB_RX_PKTRX, ipp);
+  }
+
+               if(sysctl_ipsec_inbound_policy_check
+                  /*
+                     Note: "xor" (^) logically replaces "not equal"
+                     (!=) and "bitwise or" (|) logically replaces
+                     "boolean or" (||).  This is done to speed up
+                     execution by doing only bitwise operations and
+                     no branch operations
+                  */
+                  && (((ipp->saddr & ipsp->ips_mask_s.u.v4.sin_addr.s_addr)
+                                   ^ ipsp->ips_flow_s.u.v4.sin_addr.s_addr)
+                      | ((ipp->daddr & ipsp->ips_mask_d.u.v4.sin_addr.s_addr)
+                                     ^ ipsp->ips_flow_d.u.v4.sin_addr.s_addr)) )
+               {
+                       char sflow_txt[SUBNETTOA_BUF], dflow_txt[SUBNETTOA_BUF];
+
+                       subnettoa(ipsp->ips_flow_s.u.v4.sin_addr,
+                               ipsp->ips_mask_s.u.v4.sin_addr,
+                               0, sflow_txt, sizeof(sflow_txt));
+                       subnettoa(ipsp->ips_flow_d.u.v4.sin_addr,
+                               ipsp->ips_mask_d.u.v4.sin_addr,
+                               0, dflow_txt, sizeof(dflow_txt));
+                       spin_unlock(&tdb_lock);
+                       KLIPS_PRINT(debug_rcv,
+                                   "klips_debug:ipsec_rcv: "
+                                   "SA:%s, inner tunnel policy [%s -> %s] does not agree with pkt contents [%s -> %s].\n",
+                                   irs->sa_len ? irs->sa : " (error)",
+                                   sflow_txt,
+                                   dflow_txt,
+                                   irs->ipsaddr_txt,
+                                   irs->ipdaddr_txt);
+                       if(irs->stats) {
+                               irs->stats->rx_dropped++;
+                       }
+                       goto rcvleave;
+               }
+#ifdef CONFIG_NETFILTER
+               skb->nfmark = (skb->nfmark & (~(IPsecSAref2NFmark(IPSEC_SA_REF_TABLE_MASK))))
+                       | IPsecSAref2NFmark(IPsecSA2SAref(ipsp));
+               KLIPS_PRINT(debug_rcv & DB_RX_PKTRX,
+                           "klips_debug:ipsec_rcv: "
+                           "IPIP SA sets skb->nfmark=0x%x.\n",
+                           (unsigned)skb->nfmark);
+#endif /* CONFIG_NETFILTER */
+       }
+
+       spin_unlock(&tdb_lock);
+
+       if(irs->stats) {
+               irs->stats->rx_bytes += skb->len;
+       }
+       if(skb->dst) {
+               dst_release(skb->dst);
+               skb->dst = NULL;
+       }
+       skb->pkt_type = PACKET_HOST;
+       if(irs->hard_header_len &&
+          (skb_mac_header(skb) != (skb_network_header(skb) - irs->hard_header_len)) &&
+          (irs->hard_header_len <= skb_headroom(skb))) {
+               /* copy back original MAC header */
+               memmove(skb_network_header(skb) - irs->hard_header_len,
+                       skb_mac_header(skb), irs->hard_header_len);
+               skb_set_mac_header(skb, ipsec_skb_offset(skb, skb_network_header(skb) - irs->hard_header_len));
+       }
+
+#ifdef CONFIG_KLIPS_IPCOMP
+       if(ipp->protocol == IPPROTO_COMP) {
+               unsigned int flags = 0;
+
+               if(sysctl_ipsec_inbound_policy_check) {
+                       KLIPS_PRINT(debug_rcv & DB_RX_PKTRX,
+                               "klips_debug:ipsec_rcv: "
+                               "inbound policy checking enabled, IPCOMP follows IPIP, dropped.\n");
+                       if (irs->stats) {
+                               irs->stats->rx_errors++;
+                       }
+                       goto rcvleave;
+               }
+               /*
+                 XXX need a ipsec_sa for updating ratio counters but it is not
+                 following policy anyways so it is not a priority
+               */
+               skb = skb_decompress(skb, NULL, &flags);
+               if (!skb || flags) {
+                       KLIPS_PRINT(debug_rcv & DB_RX_PKTRX,
+                               "klips_debug:ipsec_rcv: "
+                               "skb_decompress() returned error flags: %d, dropped.\n",
+                               flags);
+                       if (irs->stats) {
+                               irs->stats->rx_errors++;
+                       }
+                       goto rcvleave;
+               }
+       }
+#endif /* CONFIG_KLIPS_IPCOMP */
+
+       /*
+        * make sure that data now starts at IP header, since we are going
+        * to pass this back to ip_input (aka netif_rx). Rules for what the
+        * pointers wind up a different for 2.6 vs 2.4, so we just fudge it here.
+        */
+#ifdef NET_26
+       irs->skb->data = skb_push(irs->skb, skb_transport_header(irs->skb) - skb_network_header(irs->skb));
+#else
+       irs->skb->data = skb_network_header(irs->skb);
+       {
+         struct iphdr *iph = ip_hdr(irs->skb);
+         int len = ntohs(iph->tot_len);
+         irs->skb->len  = len;
+       }
+#endif
+
+#ifdef SKB_RESET_NFCT
+       nf_conntrack_put(skb->nfct);
+       skb->nfct = NULL;
+#if defined(CONFIG_NETFILTER_DEBUG) && defined(HAVE_SKB_NF_DEBUG)
+       skb->nf_debug = 0;
+#endif /* CONFIG_NETFILTER_DEBUG */
+#endif /* SKB_RESET_NFCT */
+       KLIPS_PRINT(debug_rcv & DB_RX_PKTRX,
+                   "klips_debug:ipsec_rcv: "
+                   "netif_rx() called.\n");
+       netif_rx(skb);
+       skb=NULL;
+
+ rcvleave:
+       if(skb) {
+               ipsec_kfree_skb(skb);
+       }
+
+       /* KLIPS_DEC_USE; Artifact from refactor? bug # 454 */
+       return(0);
+}
+
+struct sk_buff *ipsec_rcv_unclone(struct sk_buff *skb,
+                                 struct ipsec_rcv_state *irs)
+{
+       /* if skb was cloned (most likely due to a packet sniffer such as
+          tcpdump being momentarily attached to the interface), make
+          a copy of our own to modify */
+       if(skb_cloned(skb)) {
+               /* include any mac header while copying.. */
+               if(skb_headroom(skb) < irs->hard_header_len) {
+                       printk(KERN_WARNING "klips_error:ipsec_rcv: "
+                              "tried to skb_push hhlen=%d, %d available.  This should never happen, please report.\n",
+                              irs->hard_header_len,
+                              skb_headroom(skb));
+                       goto rcvleave;
+               }
+               skb_push(skb, irs->hard_header_len);
+               if
+#ifdef SKB_COW_NEW
+                 (skb_cow(skb, skb_headroom(skb)) != 0)
+#else /* SKB_COW_NEW */
+                 ((skb = skb_cow(skb, skb_headroom(skb))) == NULL)
+#endif /* SKB_COW_NEW */
+               {
+                       goto rcvleave;
+               }
+               if(skb->len < irs->hard_header_len) {
+                       printk(KERN_WARNING "klips_error:ipsec_rcv: "
+                              "tried to skb_pull hhlen=%d, %d available.  This should never happen, please report.\n",
+                              irs->hard_header_len,
+                              skb->len);
+                       goto rcvleave;
+               }
+               skb_pull(skb, irs->hard_header_len);
+       }
+       return skb;
+
+rcvleave:
+       ipsec_kfree_skb(skb);
+       return NULL;
+}
+
+
+#if !defined(NET_26) && defined(CONFIG_IPSEC_NAT_TRAVERSAL)
+/*
+ * decapsulate a UDP encapsulated ESP packet
+ */
+struct sk_buff *ipsec_rcv_natt_decap(struct sk_buff *skb
+                                    , struct ipsec_rcv_state *irs
+                                    , int *udp_decap_ret_p)
+{
+       *udp_decap_ret_p = 0;
+       if (skb->sk && skb->nh.iph && skb->nh.iph->protocol==IPPROTO_UDP) {
+               /**
+                * Packet comes from udp_queue_rcv_skb so it is already defrag,
+                * checksum verified, ... (ie safe to use)
+                *
+                * If the packet is not for us, return -1 and udp_queue_rcv_skb
+                * will continue to handle it (do not kfree skb !!).
+                */
+
+#ifndef UDP_OPT_IN_SOCK
+               struct udp_opt {
+                       __u32 esp_in_udp;
+               };
+               struct udp_opt *tp =  (struct udp_opt *)&(skb->sk->tp_pinfo.af_tcp);
+#else
+               struct udp_opt *tp =  &(skb->sk->tp_pinfo.af_udp);
+#endif
+
+               struct iphdr *ip = (struct iphdr *)skb->nh.iph;
+               struct udphdr *udp = (struct udphdr *)((__u32 *)ip+ip->ihl);
+               __u8 *udpdata = (__u8 *)udp + sizeof(struct udphdr);
+               __u32 *udpdata32 = (__u32 *)udpdata;
+               
+               irs->natt_sport = ntohs(udp->source);
+               irs->natt_dport = ntohs(udp->dest);
+         
+               KLIPS_PRINT(debug_rcv,
+                           "klips_debug:ipsec_rcv: "
+                           "suspected ESPinUDP packet (NAT-Traversal) [%d].\n",
+                           tp->esp_in_udp);
+               KLIPS_IP_PRINT(debug_rcv, ip);
+         
+               if (udpdata < skb->tail) {
+                       unsigned int len = skb->tail - udpdata;
+                       if ((len==1) && (udpdata[0]==0xff)) {
+                               KLIPS_PRINT(debug_rcv,
+                                           "klips_debug:ipsec_rcv: "
+                                           /* not IPv6 compliant message */
+                                           "NAT-keepalive from %d.%d.%d.%d.\n", NIPQUAD(ip->saddr));
+                               *udp_decap_ret_p = 0;
+                               return NULL;
+                       }
+                       else if ( (tp->esp_in_udp == ESPINUDP_WITH_NON_IKE) &&
+                                 (len > (2*sizeof(__u32) + sizeof(struct esphdr))) &&
+                                 (udpdata32[0]==0) && (udpdata32[1]==0) ) {
+                               /* ESP Packet with Non-IKE header */
+                               KLIPS_PRINT(debug_rcv, 
+                                           "klips_debug:ipsec_rcv: "
+                                           "ESPinUDP pkt with Non-IKE - spi=0x%x\n",
+                                           ntohl(udpdata32[2]));
+                               irs->natt_type = ESPINUDP_WITH_NON_IKE;
+                               irs->natt_len = sizeof(struct udphdr)+(2*sizeof(__u32));
+                       }
+                       else if ( (tp->esp_in_udp == ESPINUDP_WITH_NON_ESP) &&
+                                 (len > sizeof(struct esphdr)) &&
+                                 (udpdata32[0]!=0) ) {
+                               /* ESP Packet without Non-ESP header */
+                               irs->natt_type = ESPINUDP_WITH_NON_ESP;
+                               irs->natt_len = sizeof(struct udphdr);
+                               KLIPS_PRINT(debug_rcv, 
+                                           "klips_debug:ipsec_rcv: "
+                                           "ESPinUDP pkt without Non-ESP - spi=0x%x\n",
+                                           ntohl(udpdata32[0]));
+                       }
+                       else {
+                               KLIPS_PRINT(debug_rcv,
+                                           "klips_debug:ipsec_rcv: "
+                                           "IKE packet - not handled here\n");
+                               *udp_decap_ret_p = -1;
+                               return NULL;
+                       }
+               }
+               else {
+                       return NULL;
+               }
+       }
+       return skb;
+}
+#endif
+
+
+int
+ipsec_rcv(struct sk_buff *skb
+#ifndef PROTO_HANDLER_SINGLE_PARM
+         unsigned short xlen
+#endif /* PROTO_HANDLER_SINGLE_PARM */
+         )
+{
+#ifdef CONFIG_KLIPS_DEBUG
+       struct net_device *dev = skb->dev;
+#endif /* CONFIG_KLIPS_DEBUG */
+       unsigned char protoc;
+       struct net_device_stats *stats = NULL;          /* This device's statistics */
+       struct net_device *ipsecdev = NULL, *prvdev;
+       struct ipsecpriv *prv;
+       struct ipsec_rcv_state nirs, *irs = &nirs;
+       struct iphdr *ipp;
+       char name[9];
+       int i;
+
+       /* Don't unlink in the middle of a turnaround */
+       KLIPS_INC_USE;
+
+       memset(&nirs, 0, sizeof(struct ipsec_rcv_state));
+
+       if (skb == NULL) {
+               KLIPS_PRINT(debug_rcv,
+                           "klips_debug:ipsec_rcv: "
+                           "NULL skb passed in.\n");
+               goto rcvleave;
+       }
+
+       if (skb->data == NULL) {
+               KLIPS_PRINT(debug_rcv,
+                           "klips_debug:ipsec_rcv: "
+                           "NULL skb->data passed in, packet is bogus, dropping.\n");
+               goto rcvleave;
+       }
+
+#if defined(CONFIG_IPSEC_NAT_TRAVERSAL) && !defined(NET_26)
+       {
+               /* NET_26 NAT-T is handled by seperate function */
+               struct sk_buff *nskb;
+               int udp_decap_ret = 0;
+
+               nskb = ipsec_rcv_natt_decap(skb, irs, &udp_decap_ret);
+               if(nskb == NULL) {
+                       /* return with non-zero, because UDP.c code
+                        * need to send it upstream.
+                        */
+                       if(skb && udp_decap_ret == 0) {
+                               ipsec_kfree_skb(skb);
+                       }
+                       KLIPS_DEC_USE;
+                       return(udp_decap_ret);
+               }
+               skb = nskb;
+       }
+#endif /* NAT_T */
+
+       /* dev->hard_header_len is unreliable and should not be used */
+       /* klips26_rcv_encap will have already set hard_header_len for us?? */
+       if (irs->hard_header_len == 0) {
+               irs->hard_header_len = skb_mac_header(skb) ? (skb_network_header(skb) - skb_mac_header(skb)) : 0;
+               if((irs->hard_header_len < 0) || (irs->hard_header_len > skb_headroom(skb)))
+                       irs->hard_header_len = 0;
+       }
+
+       skb = ipsec_rcv_unclone(skb, irs);
+       if(skb == NULL) {
+               goto rcvleave;
+       }
+
+#if IP_FRAGMENT_LINEARIZE
+       /* In Linux 2.4.4, we may have to reassemble fragments. They are
+          not assembled automatically to save TCP from having to copy
+          twice.
+       */
+       if (skb_is_nonlinear(skb)) {
+#ifdef HAVE_NEW_SKB_LINEARIZE
+               if (skb_linearize_cow(skb) != 0)
+#else
+               if (skb_linearize(skb, GFP_ATOMIC) != 0) 
+#endif
+               {
+                       goto rcvleave;
+               }
+       }
+#endif /* IP_FRAGMENT_LINEARIZE */
+
+#if defined(CONFIG_IPSEC_NAT_TRAVERSAL) && !defined(NET_26)
+       if (irs->natt_len) {
+               /**
+                * Now, we are sure packet is ESPinUDP, and we have a private
+                * copy that has been linearized, remove natt_len bytes
+                * from packet and modify protocol to ESP.
+                */
+               if (((unsigned char *)skb->data > (unsigned char *)skb->nh.iph)
+                   && ((unsigned char *)skb->nh.iph > (unsigned char *)skb->head))
+               {
+                       unsigned int _len = (unsigned char *)skb->data -
+                               (unsigned char *)skb->nh.iph;
+                       KLIPS_PRINT(debug_rcv,
+                               "klips_debug:ipsec_rcv: adjusting skb: skb_push(%u)\n",
+                               _len);
+                       skb_push(skb, _len);
+               }
+               KLIPS_PRINT(debug_rcv,
+                   "klips_debug:ipsec_rcv: "
+                       "removing %d bytes from ESPinUDP packet\n", irs->natt_len);
+               ipp = skb->nh.iph;
+               irs->iphlen = ipp->ihl << 2;
+               ipp->tot_len = htons(ntohs(ipp->tot_len) - irs->natt_len);
+               if (skb->len < irs->iphlen + irs->natt_len) {
+                       printk(KERN_WARNING
+                      "klips_error:ipsec_rcv: "
+                      "ESPinUDP packet is too small (%d < %d+%d). "
+                          "This should never happen, please report.\n",
+                      (int)(skb->len), irs->iphlen, irs->natt_len);
+                       goto rcvleave;
+               }
+
+               /* advance payload pointer to point past the UDP header */
+               skb->h.raw = skb->h.raw + irs->natt_len;
+
+               /* modify protocol */
+               ipp->protocol = IPPROTO_ESP;
+
+               skb->sk = NULL;
+
+               KLIPS_IP_PRINT(debug_rcv, skb->nh.iph);
+       }
+#endif
+
+       /* ipp = skb->nh.iph; */
+       ipp = ip_hdr(skb);
+
+       {
+               struct in_addr ipsaddr;
+               struct in_addr ipdaddr;
+
+               ipsaddr.s_addr = ipp->saddr;
+               addrtoa(ipsaddr, 0, irs->ipsaddr_txt
+                       , sizeof(irs->ipsaddr_txt));
+               ipdaddr.s_addr = ipp->daddr;
+               addrtoa(ipdaddr, 0, irs->ipdaddr_txt
+                       , sizeof(irs->ipdaddr_txt));
+       }
+
+       irs->iphlen = ipp->ihl << 2;
+
+       KLIPS_PRINT(debug_rcv,
+                   "klips_debug:ipsec_rcv: "
+                   "<<< Info -- ");
+       KLIPS_PRINTMORE(debug_rcv && skb->dev, "skb->dev=%s ",
+                       skb->dev->name ? skb->dev->name : "NULL");
+       KLIPS_PRINTMORE(debug_rcv && dev, "dev=%s ",
+                       dev->name ? dev->name : "NULL");
+       KLIPS_PRINTMORE(debug_rcv, "\n");
+
+       KLIPS_PRINT(debug_rcv && !(skb->dev && dev && (skb->dev == dev)),
+                   "klips_debug:ipsec_rcv: "
+                   "Informational -- **if this happens, find out why** skb->dev:%s is not equal to dev:%s\n",
+                   skb->dev ? (skb->dev->name ? skb->dev->name : "NULL") : "NULL",
+                   dev ? (dev->name ? dev->name : "NULL") : "NULL");
+
+       protoc = ipp->protocol;
+#ifndef NET_21
+       if((!protocol) || (protocol->protocol != protoc)) {
+               KLIPS_PRINT(debug_rcv & DB_RX_IPSA,
+                           "klips_debug:ipsec_rcv: "
+                           "protocol arg is NULL or unequal to the packet contents, this is odd, using value in packet.\n");
+       }
+#endif /* !NET_21 */
+
+       if( (protoc != IPPROTO_AH) &&
+#ifdef CONFIG_KLIPS_IPCOMP_disabled_until_we_register_IPCOMP_HANDLER
+           (protoc != IPPROTO_COMP) &&
+#endif /* CONFIG_KLIPS_IPCOMP */
+           (protoc != IPPROTO_ESP) ) {
+               KLIPS_PRINT(debug_rcv & DB_RX_IPSA,
+                           "klips_debug:ipsec_rcv: Why the hell is someone "
+                           "passing me a non-ipsec protocol = %d packet? -- dropped.\n",
+                           protoc);
+               goto rcvleave;
+       }
+
+       if(skb->dev) {
+               for(i = 0; i < IPSEC_NUM_IF; i++) {
+                       sprintf(name, IPSEC_DEV_FORMAT, i);
+                       if(!strcmp(name, skb->dev->name)) {
+                               prv = (struct ipsecpriv *)(skb->dev->priv);
+                               if(prv) {
+                                       stats = (struct net_device_stats *) &(prv->mystats);
+                               }
+                               ipsecdev = skb->dev;
+                               KLIPS_PRINT(debug_rcv,
+                                           "klips_debug:ipsec_rcv: "
+                                           "Info -- pkt already proc'ed a group of ipsec headers, processing next group of ipsec headers.\n");
+                               break;
+                       }
+                       if((ipsecdev = __ipsec_dev_get(name)) == NULL) {
+                               KLIPS_PRINT(debug_rcv,
+                                           "klips_error:ipsec_rcv: "
+                                           "device %s does not exist\n",
+                                           name);
+                       }
+                       prv = ipsecdev ? (struct ipsecpriv *)(ipsecdev->priv) : NULL;
+                       prvdev = prv ? (struct net_device *)(prv->dev) : NULL;
+
+#if 0
+                       KLIPS_PRINT(debug_rcv && prvdev,
+                                   "klips_debug:ipsec_rcv: "
+                                   "physical device for device %s is %s\n",
+                                   name,
+                                   prvdev->name);
+#endif
+                       if(prvdev && skb->dev &&
+                          !strcmp(prvdev->name, skb->dev->name)) {
+                               stats = prv ? ((struct net_device_stats *) &(prv->mystats)) : NULL;
+                               skb->dev = ipsecdev;
+                               KLIPS_PRINT(debug_rcv && prvdev,
+                                           "klips_debug:ipsec_rcv: "
+                                           "assigning packet ownership to virtual device %s from physical device %s.\n",
+                                           name, prvdev->name);
+                               if(stats) {
+                                       stats->rx_packets++;
+                               }
+                               break;
+                       }
+               }
+       } else {
+               KLIPS_PRINT(debug_rcv,
+                           "klips_debug:ipsec_rcv: "
+                           "device supplied with skb is NULL\n");
+       }
+
+       if(stats == NULL) {
+               KLIPS_PRINT((debug_rcv),
+                           "klips_error:ipsec_rcv: "
+                           "packet received from physical I/F (%s) not connected to ipsec I/F.  Cannot record stats.  May not have SA for decoding.  Is IPSEC traffic expected on this I/F?  Check routing.\n",
+                           skb->dev ? (skb->dev->name ? skb->dev->name : "NULL") : "NULL");
+       }
+               
+       KLIPS_IP_PRINT(debug_rcv, ipp);
+
+       /* set up for decap loop */
+       irs->stats= stats;
+       irs->ipp  = ipp;
+       irs->ipsp = NULL;
+       irs->ilen = 0;
+       irs->authlen=0;
+       irs->authfuncs=NULL;
+       irs->skb = skb;
+
+       ipsec_rcv_decap(irs);
+       KLIPS_DEC_USE;
+       return(0);
+
+ rcvleave:
+       if(skb) {
+               ipsec_kfree_skb(skb);
+       }
+       KLIPS_DEC_USE;
+       return(0);
+
+}
+
+#ifdef NET_26
+/*
+ * this entry point is not a protocol entry point, so the entry
+ * is a bit different.
+ *
+ * skb->iph->tot_len has been byte-swapped, and reduced by the size of
+ *              the IP header (and options).
+ * 
+ * skb->h.raw has been pulled up the ESP header.
+ *
+ * skb->iph->protocol = 50 IPPROTO_ESP;
+ *
+ */
+int klips26_rcv_encap(struct sk_buff *skb, __u16 encap_type)
+{
+       struct ipsec_rcv_state nirs, *irs = &nirs;
+       struct iphdr *ipp;
+
+       /* Don't unlink in the middle of a turnaround */
+       KLIPS_INC_USE;
+
+       memset(irs, 0, sizeof(*irs));
+
+       /* XXX fudge it so that all nat-t stuff comes from ipsec0    */
+       /*     eventually, the SA itself will determine which device
+        *     it comes from
+        */ 
+       {
+         skb->dev = ipsec_get_device(0);
+       }
+
+       /* set up for decap loop */
+       irs->hard_header_len = skb->dev->hard_header_len;
+
+       skb = ipsec_rcv_unclone(skb, irs);
+
+#if IP_FRAGMENT_LINEARIZE
+       /* In Linux 2.4.4, we may have to reassemble fragments. They are
+          not assembled automatically to save TCP from having to copy
+          twice.
+       */
+       if (skb_is_nonlinear(skb)) {
+#ifdef HAVE_NEW_SKB_LINEARIZE
+               if (skb_linearize_cow(skb) != 0) 
+#else
+               if (skb_linearize(skb, GFP_ATOMIC) != 0) 
+#endif
+               {
+                       goto rcvleave;
+               }
+       }
+#endif /* IP_FRAGMENT_LINEARIZE */
+
+       /* ipp = skb->nh.iph; */
+       ipp =ip_hdr(skb);
+
+       {
+               struct in_addr ipsaddr;
+               struct in_addr ipdaddr;
+
+               ipsaddr.s_addr = ipp->saddr;
+               addrtoa(ipsaddr, 0, irs->ipsaddr_txt
+                       , sizeof(irs->ipsaddr_txt));
+               ipdaddr.s_addr = ipp->daddr;
+               addrtoa(ipdaddr, 0, irs->ipdaddr_txt
+                       , sizeof(irs->ipdaddr_txt));
+       }
+
+       irs->iphlen = ipp->ihl << 2;
+
+       KLIPS_IP_PRINT(debug_rcv, ipp);
+
+       irs->stats= NULL;
+       irs->ipp  = ipp;
+       irs->ipsp = NULL;
+       irs->ilen = 0;
+       irs->authlen=0;
+       irs->authfuncs=NULL;
+       irs->skb = skb;
+
+#ifdef CONFIG_IPSEC_NAT_TRAVERSAL
+       switch(encap_type) {
+       case UDP_ENCAP_ESPINUDP:
+         irs->natt_type = ESPINUDP_WITH_NON_ESP;
+         break;
+         
+       case UDP_ENCAP_ESPINUDP_NON_IKE:
+         irs->natt_type = ESPINUDP_WITH_NON_IKE;
+         break;
+         
+       default:
+         if(printk_ratelimit()) {
+           printk(KERN_INFO "KLIPS received unknown UDP-ESP encap type %u\n",
+                  encap_type);
+         }
+         return -1;
+       }
+
+#endif
+       ipsec_rcv_decap(irs);
+       KLIPS_DEC_USE;
+       return 0;
+
+rcvleave:
+       if(skb) {
+               ipsec_kfree_skb(skb);
+       }
+       KLIPS_DEC_USE;
+       return 0;
+}
+#endif
+
+
+/*
+ * $Log: ipsec_rcv.c,v $
+ * Revision 1.171.2.15  2007-10-30 21:37:45  paul
+ * Use skb_tail_pointer() [dhr]
+ *
+ * Revision 1.171.2.14  2007-10-22 14:54:38  paul
+ * Fix identation
+ *
+ * Revision 1.171.2.13  2007/10/15 22:16:34  paul
+ * Adding missing ; in DISABLE_UDP_CHECKSUM code
+ *
+ * Revision 1.171.2.12  2007/09/05 02:56:09  paul
+ * Use the new ipsec_kversion macros by David to deal with 2.6.22 kernels.
+ * Fixes based on David McCullough patch.
+ *
+ * Revision 1.171.2.11  2007/04/28 20:46:40  paul
+ * Added compile time switch for -DDISABLE_UDP_CHECKSUM that seems to be
+ * breaking IPsec+NAT+Transport mode with NAT-OA. Enabled this per default
+ * via Makefile.inc's USERCOMPILE flags.
+ *
+ * Revision 1.171.2.10  2006/10/06 21:39:26  paul
+ * Fix for 2.6.18+ only include linux/config.h if AUTOCONF_INCLUDED is not
+ * set. This is defined through autoconf.h which is included through the
+ * linux kernel build macros.
+ *
+ * Revision 1.171.2.9  2006/07/30 02:09:33  paul
+ * Author: Bart Trojanowski <bart@xelerance.com>
+ * This fixes a NATT+ESP bug in rcv path.
+ *
+ *     We only want to test NATT policy on the ESP packet.  Doing so on the
+ *     bundled SA breaks because the next layer does not know anything about
+ *     NATT.
+ *
+ *     Fix just puts an if(proto == IPPROTO_ESP) around the NATT policy check.
+ *
+ * Revision 1.171.2.8  2006/07/29 05:03:04  paul
+ * Added check for new version of skb_linearize that only takes 1 argument,
+ * for 2.6.18+ kernels.
+ *
+ * Revision 1.171.2.7  2006/04/20 16:33:07  mcr
+ * remove all of CONFIG_KLIPS_ALG --- one can no longer build without it.
+ * Fix in-kernel module compilation. Sub-makefiles do not work.
+ *
+ * Revision 1.171.2.6  2005/12/07 06:07:04  paul
+ * comment out KLIPS_DEC_USE in ipsec_rcv_decap. Likely an artifact from
+ * refactoring. http://bugs.xelerance.com/view.php?id=454
+ *
+ * Revision 1.171.2.5  2005/10/21 02:22:29  mcr
+ *     pull up of another try at 2.4.x kernel fix
+ *
+ * Revision 1.171.2.4  2005/10/21 01:39:56  mcr
+ *     nat-t fix is 2.4/2.6 specific
+ *
+ * Revision 1.178  2005/10/21 02:19:34  mcr
+ *     on 2.4 systems, we have to fix up the length as well.
+ *
+ * Revision 1.177  2005/10/21 00:18:31  mcr
+ *     nat-t fix is 2.4 specific.
+ *
+ * Revision 1.176  2005/10/20 21:06:11  mcr
+ *     possible fix for nat-t problem on 2.4 kernels.
+ *
+ * Revision 1.175  2005/10/13 02:49:24  mcr
+ *     tested UDP-encapsulated ESP packets that were not actually ESP,
+ *     (but IKE) were being eaten.
+ *
+ * Revision 1.174  2005/10/13 01:25:22  mcr
+ *     UDP-encapsulated ESP packets that were not actually ESP,
+ *     (but IKE) were being eaten.
+ *
+ * Revision 1.173  2005/08/31 23:26:11  mcr
+ *     fixes for 2.6.13
+ *
+ * Revision 1.172  2005/08/05 08:44:54  mcr
+ *     ipsec_kern24.h (compat code for 2.4) must be include
+ *     explicitely now.
+ *
+ * Revision 1.171  2005/07/08 23:56:06  ken
+ * #ifdef
+ *
+ * Revision 1.170  2005/07/08 23:50:05  ken
+ * Don't attempt to decapsulate if NAT-T isn't available in the code
+ *
+ * Revision 1.169  2005/06/06 00:27:31  mcr
+ *     fix for making tcpdump (packet capture) work correctly for
+ *     nat-t received packets.
+ *
+ * Revision 1.168  2005/06/04 16:06:06  mcr
+ *     better patch for nat-t rcv-device code.
+ *
+ * Revision 1.167  2005/06/03 17:04:46  mcr
+ *     nat-t packets are forced to arrive from ipsec0.
+ *
+ * Revision 1.166  2005/04/29 05:10:22  mcr
+ *     removed from extraenous includes to make unit testing easier.
+ *
+ * Revision 1.165  2005/04/20 17:11:32  mcr
+ *     fixed to compile on 2.4.
+ *
+ * Revision 1.164  2005/04/18 03:09:50  ken
+ * Fix typo
+ *
+ * Revision 1.163  2005/04/17 05:32:58  mcr
+ *     remove extraneous debugging
+ *     make sure to return success from klips26_encap_rcv().
+ *
+ * Revision 1.162  2005/04/17 04:37:01  mcr
+ *     make sure that irs->ipp is still set.
+ *
+ * Revision 1.161  2005/04/17 03:51:52  mcr
+ *     removed old comment about removed code.
+ *     added translation from udp.c/2.6 to KLIPS NAT-ESP naming.
+ *     comment about check for origin address/port for incoming NAT-ESP packets.
+ *
+ * Revision 1.160  2005/04/15 19:55:58  mcr
+ *     adjustments to use proper skb fields for data.
+ *
+ * Revision 1.159  2005/04/10 22:58:20  mcr
+ *     refactoring of receive functions to make it easier to
+ *     call the ESP decap.
+ *
+ * Revision 1.158  2005/04/08 18:27:53  mcr
+ *     refactored ipsec_rcv() into ipsec_rcv() and ipsec_rcv_decap().
+ *
+ * Revision 1.157  2004/12/28 23:13:09  mcr
+ *     use consistent CONFIG_IPSEC_NAT_TRAVERSAL.
+ *
+ * Revision 1.156  2004/12/03 21:34:51  mcr
+ *     mistype of KLIPS_USE_COUNT -> KLIPS_INC_USE;
+ *
+ * Revision 1.155  2004/12/03 21:25:57  mcr
+ *     compile time fixes for running on 2.6.
+ *     still experimental.
+ *
+ * Revision 1.154  2004/09/08 17:21:36  ken
+ * Rename MD5* -> osMD5 functions to prevent clashes with other symbols exported by kernel modules (CIFS in 2.6 initiated this)
+ *
+ * Revision 1.153  2004/08/22 20:10:00  mcr
+ *     removed check for incorrect setting of NET_26.
+ *
+ * Revision 1.152  2004/08/21 15:22:39  mcr
+ *     added #defines for ATT heartbeat.
+ *
+ * Revision 1.151  2004/08/21 02:16:32  ken
+ * Patch from Jochen Eisinger for AT&T MTS Heartbeat packet support
+ *
+ * Revision 1.150  2004/08/21 00:44:48  mcr
+ *     CONFIG_KLIPS_NAT was wrong, also need to include udp.h.
+ *
+ * Revision 1.149  2004/08/20 21:45:45  mcr
+ *     CONFIG_KLIPS_NAT_TRAVERSAL is not used in an attempt to
+ *     be 26sec compatible. But, some defines where changed.
+ *
+ * Revision 1.148  2004/08/17 03:27:23  mcr
+ *     klips 2.6 edits.
+ *
+ * Revision 1.147  2004/08/05 23:29:27  mcr
+ *     fixed nesting of #ifdef vs {} in ipsec_rcv().
+ *
+ * Revision 1.146  2004/08/04 15:57:07  mcr
+ *     moved des .h files to include/des/ *
+ *     included 2.6 protocol specific things
+ *     started at NAT-T support, but it will require a kernel patch.
+ *
+ * Revision 1.145  2004/08/03 18:19:08  mcr
+ *     in 2.6, use "net_device" instead of #define device->net_device.
+ *     this probably breaks 2.0 compiles.
+ *
+ * Revision 1.144  2004/07/10 19:11:18  mcr
+ *     CONFIG_IPSEC -> CONFIG_KLIPS.
+ *
+ * Revision 1.143  2004/05/10 22:27:00  mcr
+ *     fix for ESP-3DES-noauth test case.
+ *
+ * Revision 1.142  2004/05/10 22:25:57  mcr
+ *     reformat of calls to ipsec_lifetime_check().
+ *
+ * Revision 1.141  2004/04/06 02:49:26  mcr
+ *     pullup of algo code from alg-branch.
+ *
+ * Revision 1.140  2004/02/03 03:12:53  mcr
+ *     removed erroneously, double patched code.
+ *
+ * Revision 1.139  2004/01/05 23:21:29  mcr
+ *     initialize sin_family in ipsec_rcv.c
+ *
+ * Revision 1.138  2003/12/24 19:46:52  mcr
+ *     if sock.h patch has not been applied, then define appropriate
+ *     structure so we can use it. This is serious inferior, and
+ *     depends upon the concept that the structure in question is
+ *     smaller than the other members of that union.
+ *     getting rid of differing methods is a better solution.
+ *
+ * Revision 1.137  2003/12/22 19:40:57  mcr
+ *     NAT-T patches 0.6c.
+ *
+ * Revision 1.136  2003/12/15 18:13:12  mcr
+ *     when compiling with NAT traversal, don't assume that the
+ *     kernel has been patched, unless CONFIG_IPSEC_NAT_NON_ESP
+ *     is set.
+ *
+ * Revision 1.135  2003/12/13 19:10:21  mcr
+ *     refactored rcv and xmit code - same as FS 2.05.
+ *
+ * Revision 1.134.2.1  2003/12/22 15:25:52  jjo
+ *      Merged algo-0.8.1-rc11-test1 into alg-branch
+ *
+ * Revision 1.134  2003/12/10 01:14:27  mcr
+ *     NAT-traversal patches to KLIPS.
+ *
+ * Revision 1.133  2003/10/31 02:27:55  mcr
+ *     pulled up port-selector patches and sa_id elimination.
+ *
+ * Revision 1.132.2.1  2003/10/29 01:30:41  mcr
+ *     elimited "struct sa_id".
+ *
+ * Revision 1.132  2003/09/02 19:51:48  mcr
+ *     fixes for PR#252.
+ *
+ * Revision 1.131  2003/07/31 22:47:16  mcr
+ *     preliminary (untested by FS-team) 2.5 patches.
+ *
+ * Revision 1.130  2003/04/03 17:38:25  rgb
+ * Centralised ipsec_kfree_skb and ipsec_dev_{get,put}.
+ * Clarified logic for non-connected devices.
+ *
+ * Revision 1.129  2003/02/06 02:21:34  rgb
+ *
+ * Moved "struct auth_alg" from ipsec_rcv.c to ipsec_ah.h .
+ * Changed "struct ah" to "struct ahhdr" and "struct esp" to "struct esphdr".
+ * Removed "#ifdef INBOUND_POLICY_CHECK_eroute" dead code.
+ *
+ * Revision 1.128  2002/12/13 20:58:03  rgb
+ * Relegated MCR's recent "_dmp" routine to debug_verbose.
+ * Cleaned up printing of source and destination addresses in debug output.
+ *
+ * Revision 1.127  2002/12/04 16:00:16  rgb
+ *
+ * Fixed AH decapsulation pointer update bug and added some comments and
+ * debugging.
+ * This bug was caught by west-ah-0[12].
+ *
+ * Revision 1.126  2002/11/04 05:03:43  mcr
+ *     fixes for IPCOMP. There were two problems:
+ *     1) the irs->ipp pointer was not being updated properly after
+ *        the ESP descryption. The meant nothing for IPIP, as the
+ *        later IP header overwrote the earlier one.
+ *     2) the more serious problem was that skb_decompress will
+ *        usually allocate a new SKB, so we have to make sure that
+ *        it doesn't get lost.
+ *     #2 meant removing the skb argument from the ->decrypt routine
+ *     and moving it to the irs->skb, so it could be value/result.
+ *
+ * Revision 1.125  2002/11/01 01:53:35  dhr
+ *
+ * fix typo
+ *
+ * Revision 1.124  2002/10/31 22:49:01  dhr
+ *
+ * - eliminate unused variable "hash"
+ * - reduce scope of variable "authenticator"
+ * - add comment on a couple of tricky bits
+ *
+ * Revision 1.123  2002/10/31 22:39:56  dhr
+ *
+ * use correct type for result of function calls
+ *
+ * Revision 1.122  2002/10/31 22:36:25  dhr
+ *
+ * simplify complex test
+ *
+ * Revision 1.121  2002/10/31 22:34:04  dhr
+ *
+ * ipsprev is never used: ditch it
+ *
+ * Revision 1.120  2002/10/31 22:30:21  dhr
+ *
+ * eliminate redundant assignments
+ *
+ * Revision 1.119  2002/10/31 22:27:43  dhr
+ *
+ * make whitespace canonical
+ *
+ * Revision 1.118  2002/10/30 05:47:17  rgb
+ * Fixed cut-and-paste error mis-identifying comp runt as ah.
+ *
+ * Revision 1.117  2002/10/17 16:37:45  rgb
+ * Remove compp intermediate variable and in-line its contents
+ * where used
+ *
+ * Revision 1.116  2002/10/12 23:11:53  dhr
+ *
+ * [KenB + DHR] more 64-bit cleanup
+ *
+ * Revision 1.115  2002/10/07 19:06:58  rgb
+ * Minor fixups and activation to west-rcv-nfmark-set-01 test to check for SA reference properly set on incoming.
+ *
+ * Revision 1.114  2002/10/07 18:31:31  rgb
+ * Set saref on incoming packets.
+ *
+ * Revision 1.113  2002/09/16 21:28:12  mcr
+ *     adjust hash length for HMAC calculation - must look at whether
+ *     it is MD5 or SHA1.
+ *
+ * Revision 1.112  2002/09/16 21:19:15  mcr
+ *     fixes for west-ah-icmp-01 - length of AH header must be
+ *     calculated properly, and next_header field properly copied.
+ *
+ * Revision 1.111  2002/09/10 02:45:56  mcr
+ *     re-factored the ipsec_rcv function into several functions,
+ *     ipsec_rcv_decap_once, and a set of functions for AH, ESP and IPCOMP.
+ *     In addition, the MD5 and SHA1 functions are replaced with pointers.
+ *
+ * Revision 1.110  2002/08/30 06:34:33  rgb
+ * Fix scope of shift in AH header length check.
+ *
+ * Revision 1.109  2002/08/27 16:49:20  rgb
+ * Fixed ESP short packet DOS (and AH and IPCOMP).
+ *
+ * Revision 1.108  2002/07/24 18:44:54  rgb
+ * Type fiddling to tame ia64 compiler.
+ *
+ * Revision 1.107  2002/05/27 18:58:18  rgb
+ * Convert to dynamic ipsec device allocation.
+ * Remove final vistiges of tdb references via IPSEC_KLIPS1_COMPAT.
+ *
+ * Revision 1.106  2002/05/23 07:15:21  rgb
+ * Pointer clean-up.
+ * Added refcount code.
+ *
+ * Revision 1.105  2002/05/14 02:35:06  rgb
+ * Change all references to tdb, TDB or Tunnel Descriptor Block to ips,
+ * ipsec_sa or ipsec_sa.
+ * Change references to _TDB to _IPSA.
+ *
+ * Revision 1.104  2002/04/24 07:55:32  mcr
+ *     #include patches and Makefiles for post-reorg compilation.
+ *
+ * Revision 1.103  2002/04/24 07:36:30  mcr
+ * Moved from ./klips/net/ipsec/ipsec_rcv.c,v
+ *
+ * Revision 1.102  2002/01/29 17:17:56  mcr
+ *     moved include of ipsec_param.h to after include of linux/kernel.h
+ *     otherwise, it seems that some option that is set in ipsec_param.h
+ *     screws up something subtle in the include path to kernel.h, and
+ *     it complains on the snprintf() prototype.
+ *
+ * Revision 1.101  2002/01/29 04:00:52  mcr
+ *     more excise of kversions.h header.
+ *
+ * Revision 1.100  2002/01/29 02:13:17  mcr
+ *     introduction of ipsec_kversion.h means that include of
+ *     ipsec_param.h must preceed any decisions about what files to
+ *     include to deal with differences in kernel source.
+ *
+ * Revision 1.99  2002/01/28 21:40:59  mcr
+ *     should use #if to test boolean option rather than #ifdef.
+ *
+ * Revision 1.98  2002/01/20 20:19:36  mcr
+ *     renamed option to IP_FRAGMENT_LINEARIZE.
+ *
+ * Revision 1.97  2002/01/12 02:55:36  mcr
+ *     fix for post-2.4.4 to linearize skb's when ESP packet
+ *     was assembled from fragments.
+ *
+ * Revision 1.96  2001/11/26 09:23:49  rgb
+ * Merge MCR's ipsec_sa, eroute, proc and struct lifetime changes.
+ *
+ * Revision 1.93.2.2  2001/10/22 20:54:07  mcr
+ *     include des.h, removed phony prototypes and fixed calling
+ *     conventions to match real prototypes.
+ *
+ * Revision 1.93.2.1  2001/09/25 02:22:22  mcr
+ *     struct tdb -> struct ipsec_sa.
+ *     lifetime checks moved to ipsec_life.c
+ *     some sa(tdb) manipulation functions renamed.
+ *
+ * Revision 1.95  2001/11/06 19:49:07  rgb
+ * Added variable descriptions.
+ * Removed unauthenticated sequence==0 check to prevent DoS.
+ *
+ * Revision 1.94  2001/10/18 04:45:20  rgb
+ * 2.4.9 kernel deprecates linux/malloc.h in favour of linux/slab.h,
+ * lib/freeswan.h version macros moved to lib/kversions.h.
+ * Other compiler directive cleanups.
+ *
+ * Revision 1.93  2001/09/07 22:17:24  rgb
+ * Fix for removal of transport layer protocol handler arg in 2.4.4.
+ * Fix to accomodate peer non-conformance to IPCOMP rfc2393.
+ *
+ * Revision 1.92  2001/08/27 19:44:41  rgb
+ * Fix error in comment.
+ *
+ * Revision 1.91  2001/07/20 19:31:48  dhr
+ * [DHR] fix source and destination subnets of policy in diagnostic
+ *
+ * Revision 1.90  2001/07/06 19:51:09  rgb
+ * Added inbound policy checking code for IPIP SAs.
+ * Renamed unused function argument for ease and intuitive naming.
+ *
+ * Revision 1.89  2001/06/22 19:35:23  rgb
+ * Disable ipcomp processing if we are handed a ipcomp packet with no esp
+ * or ah header.
+ * Print protocol if we are handed a non-ipsec packet.
+ *
+ * Revision 1.88  2001/06/20 06:30:47  rgb
+ * Fixed transport mode IPCOMP policy check bug.
+ *
+ * Revision 1.87  2001/06/13 20:58:40  rgb
+ * Added parentheses around assignment used as truth value to silence
+ * compiler.
+ *
+ * Revision 1.86  2001/06/07 22:25:23  rgb
+ * Added a source address policy check for tunnel mode.  It still does
+ * not check client addresses and masks.
+ * Only decapsulate IPIP if it is expected.
+ *
+ * Revision 1.85  2001/05/30 08:14:02  rgb
+ * Removed vestiges of esp-null transforms.
+ *
+ * Revision 1.84  2001/05/27 06:12:11  rgb
+ * Added structures for pid, packet count and last access time to eroute.
+ * Added packet count to beginning of /proc/net/ipsec_eroute.
+ *
+ * Revision 1.83  2001/05/04 16:45:47  rgb
+ * Remove unneeded code.  ipp is not used after this point.
+ *
+ * Revision 1.82  2001/05/04 16:36:00  rgb
+ * Fix skb_cow() call for 2.4.4. (SS)
+ *
+ * Revision 1.81  2001/05/02 14:46:53  rgb
+ * Fix typo for compiler directive to pull IPH back.
+ *
+ * Revision 1.80  2001/04/30 19:46:34  rgb
+ * Update for 2.4.4.  We now receive the skb with skb->data pointing to
+ * h.raw.
+ *
+ * Revision 1.79  2001/04/23 15:01:15  rgb
+ * Added spin_lock() check to prevent double-locking for multiple
+ * transforms and hence kernel lock-ups with SMP kernels.
+ * Minor spin_unlock() adjustments to unlock before non-dependant prints
+ * and IPSEC device stats updates.
+ *
+ * Revision 1.78  2001/04/21 23:04:24  rgb
+ * Check if soft expire has already been sent before sending another to
+ * prevent ACQUIRE flooding.
+ *
+ * Revision 1.77  2001/03/16 07:35:20  rgb
+ * Ditch extra #if 1 around now permanent policy checking code.
+ *
+ * Revision 1.76  2001/02/27 22:24:54  rgb
+ * Re-formatting debug output (line-splitting, joining, 1arg/line).
+ * Check for satoa() return codes.
+ *
+ * Revision 1.75  2001/02/19 22:28:30  rgb
+ * Minor change to virtual device discovery code to assert which I/F has
+ * been found.
+ *
+ * Revision 1.74  2000/11/25 03:50:36  rgb
+ * Oops fix by minor re-arrangement of code to avoid accessing a freed tdb.
+ *
+ * Revision 1.73  2000/11/09 20:52:15  rgb
+ * More spinlock shuffling, locking earlier and unlocking later in rcv to
+ * include ipcomp and prevent races, renaming some tdb variables that got
+ * forgotten, moving some unlocks to include tdbs and adding a missing
+ * unlock.  Thanks to Svenning for some of these.
+ *
+ * Revision 1.72  2000/11/09 20:11:22  rgb
+ * Minor shuffles to fix non-standard kernel config option selection.
+ *
+ * Revision 1.71  2000/11/06 04:36:18  rgb
+ * Ditched spin_lock_irqsave in favour of spin_lock.
+ * Minor initial protocol check rewrite.
+ * Clean up debug printing.
+ * Clean up tdb handling on ipcomp.
+ * Fixed transport mode null pointer de-reference without ipcomp.
+ * Add Svenning's adaptive content compression.
+ * Disabled registration of ipcomp handler.
+ *
+ * Revision 1.70  2000/10/30 23:41:43  henry
+ * Hans-Joerg Hoexer's null-pointer fix
+ *
+ * Revision 1.69  2000/10/10 18:54:16  rgb
+ * Added a fix for incoming policy check with ipcomp enabled but
+ * uncompressible.
+ *
+ * Revision 1.68  2000/09/22 17:53:12  rgb
+ * Fixed ipcomp tdb pointers update for policy checking.
+ *
+ * Revision 1.67  2000/09/21 03:40:58  rgb
+ * Added more debugging to try and track down the cpi outward copy problem.
+ *
+ * Revision 1.66  2000/09/20 04:00:10  rgb
+ * Changed static functions to DEBUG_NO_STATIC to reveal function names for
+ * debugging oopsen.
+ *
+ * Revision 1.65  2000/09/19 07:07:16  rgb
+ * Added debugging to inbound policy check for ipcomp.
+ * Added missing spin_unlocks (thanks Svenning!).
+ * Fixed misplaced tdbnext pointers causing mismatched ipip policy check.
+ * Protect ipcomp policy check following ipip decap with sysctl switch.
+ *
+ * Revision 1.64  2000/09/18 21:27:29  rgb
+ * 2.0 fixes.
+ *
+ * Revision 1.63  2000/09/18 02:35:50  rgb
+ * Added policy checking to ipcomp and re-enabled policy checking by
+ * default.
+ * Optimised satoa calls.
+ *
+ * Revision 1.62  2000/09/17 21:02:32  rgb
+ * Clean up debugging, removing slow timestamp debug code.
+ *
+ * Revision 1.61  2000/09/16 01:07:55  rgb
+ * Fixed erroneous ref from struct ipcomp to struct ipcomphdr.
+ *
+ * Revision 1.60  2000/09/15 11:37:01  rgb
+ * Merge in heavily modified Svenning Soerensen's <svenning@post5.tele.dk>
+ * IPCOMP zlib deflate code.
+ *
+ * Revision 1.59  2000/09/15 04:56:20  rgb
+ * Remove redundant satoa() call, reformat comment.
+ *
+ * Revision 1.58  2000/09/13 08:00:52  rgb
+ * Flick on inbound policy checking.
+ *
+ * Revision 1.57  2000/09/12 03:22:19  rgb
+ * Converted inbound_policy_check to sysctl.
+ * Re-enabled policy backcheck.
+ * Moved policy checks to top and within tdb lock.
+ *
+ * Revision 1.56  2000/09/08 19:12:56  rgb
+ * Change references from DEBUG_IPSEC to CONFIG_IPSEC_DEBUG.
+ *
+ * Revision 1.55  2000/08/28 18:15:46  rgb
+ * Added MB's nf-debug reset patch.
+ *
+ * Revision 1.54  2000/08/27 01:41:26  rgb
+ * More minor tweaks to the bad padding debug code.
+ *
+ * Revision 1.53  2000/08/24 16:54:16  rgb
+ * Added KLIPS_PRINTMORE macro to continue lines without KERN_INFO level
+ * info.
+ * Tidied up device reporting at the start of ipsec_rcv.
+ * Tidied up bad padding debugging and processing.
+ *
+ * Revision 1.52  2000/08/20 21:36:03  rgb
+ * Activated pfkey_expire() calls.
+ * Added a hard/soft expiry parameter to pfkey_expire().
+ * Added sanity checking to avoid propagating zero or smaller-length skbs
+ * from a bogus decryption.
+ * Re-arranged the order of soft and hard expiry to conform to RFC2367.
+ * Clean up references to CONFIG_IPSEC_PFKEYv2.
+ *
+ * Revision 1.51  2000/08/18 21:23:30  rgb
+ * Improve bad padding warning so that the printk buffer doesn't get
+ * trampled.
+ *
+ * Revision 1.50  2000/08/01 14:51:51  rgb
+ * Removed _all_ remaining traces of DES.
+ *
+ * Revision 1.49  2000/07/28 13:50:53  rgb
+ * Changed enet_statistics to net_device_stats and added back compatibility
+ * for pre-2.1.19.
+ *
+ * Revision 1.48  2000/05/10 19:14:40  rgb
+ * Only check usetime against soft and hard limits if the tdb has been
+ * used.
+ * Cast output of ntohl so that the broken prototype doesn't make our
+ * compile noisy.
+ *
+ * Revision 1.47  2000/05/09 17:45:43  rgb
+ * Fix replay bitmap corruption bug upon receipt of bogus packet
+ * with correct SPI.  This was a DoS.
+ *
+ * Revision 1.46  2000/03/27 02:31:58  rgb
+ * Fixed authentication failure printout bug.
+ *
+ * Revision 1.45  2000/03/22 16:15:37  rgb
+ * Fixed renaming of dev_get (MB).
+ *
+ * Revision 1.44  2000/03/16 08:17:24  rgb
+ * Hardcode PF_KEYv2 support.
+ * Fixed minor bug checking AH header length.
+ *
+ * Revision 1.43  2000/03/14 12:26:59  rgb
+ * Added skb->nfct support for clearing netfilter conntrack bits (MB).
+ *
+ * Revision 1.42  2000/01/26 10:04:04  rgb
+ * Fixed inbound policy checking on transport mode bug.
+ * Fixed noisy 2.0 printk arguments.
+ *
+ * Revision 1.41  2000/01/24 20:58:02  rgb
+ * Improve debugging/reporting support for (disabled) inbound
+ * policy checking.
+ *
+ * Revision 1.40  2000/01/22 23:20:10  rgb
+ * Fixed up inboud policy checking code.
+ * Cleaned out unused crud.
+ *
+ * Revision 1.39  2000/01/21 06:15:29  rgb
+ * Added sanity checks on skb_push(), skb_pull() to prevent panics.
+ * Fixed cut-and-paste debug_tunnel to debug_rcv.
+ * Added inbound policy checking code, disabled.
+ * Simplified output code by updating ipp to post-IPIP decapsulation.
+ *
+ * elided pre-2000 comments. Use "cvs log"
+ *
+ *
+ * Local Variables:
+ * c-set-style: linux
+ * End:
+ *
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/ipsec_sa.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,1880 @@
+/*
+ * Common routines for IPsec SA maintenance routines.
+ *
+ * Copyright (C) 1996, 1997  John Ioannidis.
+ * Copyright (C) 1998, 1999, 2000, 2001, 2002  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id: ipsec_sa.c,v 1.30.2.3 2007-09-05 02:56:10 paul Exp $
+ *
+ * This is the file formerly known as "ipsec_xform.h"
+ *
+ */
+
+#ifndef AUTOCONF_INCLUDED
+#include <linux/config.h>
+#endif
+#include <linux/version.h>
+#include <linux/kernel.h> /* printk() */
+
+#include "openswan/ipsec_param.h"
+
+#ifdef MALLOC_SLAB
+# include <linux/slab.h> /* kmalloc() */
+#else /* MALLOC_SLAB */
+# include <linux/malloc.h> /* kmalloc() */
+#endif /* MALLOC_SLAB */
+#include <linux/vmalloc.h> /* vmalloc() */
+#include <linux/errno.h>  /* error codes */
+#include <linux/types.h>  /* size_t */
+#include <linux/interrupt.h> /* mark_bh */
+
+#include <linux/netdevice.h>   /* struct device, and other headers */
+#include <linux/etherdevice.h> /* eth_type_trans */
+#include <linux/ip.h>          /* struct iphdr */
+#include <linux/skbuff.h>
+#include <openswan.h>
+#ifdef SPINLOCK
+#ifdef SPINLOCK_23
+#include <linux/spinlock.h> /* *lock* */
+#else /* SPINLOCK_23 */
+#include <asm/spinlock.h> /* *lock* */
+#endif /* SPINLOCK_23 */
+#endif /* SPINLOCK */
+
+#include <net/ip.h>
+
+#include "openswan/radij.h"
+
+#include "openswan/ipsec_stats.h"
+#include "openswan/ipsec_life.h"
+#include "openswan/ipsec_sa.h"
+#include "openswan/ipsec_xform.h"
+
+#include "openswan/ipsec_encap.h"
+#include "openswan/ipsec_radij.h"
+#include "openswan/ipsec_xform.h"
+#include "openswan/ipsec_ipe4.h"
+#include "openswan/ipsec_ah.h"
+#include "openswan/ipsec_esp.h"
+
+#include <pfkeyv2.h>
+#include <pfkey.h>
+
+#include "openswan/ipsec_proto.h"
+#include "openswan/ipsec_alg.h"
+
+
+#ifdef CONFIG_KLIPS_DEBUG
+int debug_xform = 0;
+#endif /* CONFIG_KLIPS_DEBUG */
+
+#define SENDERR(_x) do { error = -(_x); goto errlab; } while (0)
+
+struct ipsec_sa *ipsec_sadb_hash[SADB_HASHMOD];
+#ifdef SPINLOCK
+spinlock_t tdb_lock = SPIN_LOCK_UNLOCKED;
+#else /* SPINLOCK */
+spinlock_t tdb_lock;
+#endif /* SPINLOCK */
+
+struct ipsec_sadb ipsec_sadb;
+
+#if IPSEC_SA_REF_CODE
+
+/* the sub table must be narrower (or equal) in bits than the variable type
+   in the main table to count the number of unused entries in it. */
+typedef struct {
+       int testSizeOf_refSubTable :
+               ((sizeof(IPsecRefTableUnusedCount) * 8) < IPSEC_SA_REF_SUBTABLE_IDX_WIDTH ? -1 : 1);
+} dummy;
+
+
+/* The field where the saref will be hosted in the skb must be wide enough to
+   accomodate the information it needs to store. */
+typedef struct {
+       int testSizeOf_refField : 
+               (IPSEC_SA_REF_HOST_FIELD_WIDTH < IPSEC_SA_REF_TABLE_IDX_WIDTH ? -1 : 1 );
+} dummy2;
+
+
+#define IPS_HASH(said) (((said)->spi + (said)->dst.u.v4.sin_addr.s_addr + (said)->proto) % SADB_HASHMOD)
+
+
+void
+ipsec_SAtest(void)
+{
+       IPsecSAref_t SAref = 258;
+       struct ipsec_sa ips;
+       ips.ips_ref = 772;
+
+       printk("klips_debug:ipsec_SAtest: "
+              "IPSEC_SA_REF_SUBTABLE_IDX_WIDTH=%u\n"
+              "IPSEC_SA_REF_MAINTABLE_NUM_ENTRIES=%u\n"
+              "IPSEC_SA_REF_SUBTABLE_NUM_ENTRIES=%u\n"
+              "IPSEC_SA_REF_HOST_FIELD_WIDTH=%lu\n"
+              "IPSEC_SA_REF_TABLE_MASK=%x\n"
+              "IPSEC_SA_REF_ENTRY_MASK=%x\n"
+              "IPsecSAref2table(%d)=%u\n"
+              "IPsecSAref2entry(%d)=%u\n"
+              "IPsecSAref2NFmark(%d)=%u\n"
+              "IPsecSAref2SA(%d)=%p\n"
+              "IPsecSA2SAref(%p)=%d\n"
+              ,
+              IPSEC_SA_REF_SUBTABLE_IDX_WIDTH,
+              IPSEC_SA_REF_MAINTABLE_NUM_ENTRIES,
+              IPSEC_SA_REF_SUBTABLE_NUM_ENTRIES,
+              (unsigned long) IPSEC_SA_REF_HOST_FIELD_WIDTH,
+              IPSEC_SA_REF_TABLE_MASK,
+              IPSEC_SA_REF_ENTRY_MASK,
+              SAref, IPsecSAref2table(SAref),
+              SAref, IPsecSAref2entry(SAref),
+              SAref, IPsecSAref2NFmark(SAref),
+              SAref, IPsecSAref2SA(SAref),
+              (&ips), IPsecSA2SAref((&ips))
+               );
+       return;
+}
+
+int
+ipsec_SAref_recycle(void)
+{
+       int table;
+       int entry;
+       int error = 0;
+
+       ipsec_sadb.refFreeListHead = -1;
+       ipsec_sadb.refFreeListTail = -1;
+
+       if(ipsec_sadb.refFreeListCont == IPSEC_SA_REF_MAINTABLE_NUM_ENTRIES * IPSEC_SA_REF_SUBTABLE_NUM_ENTRIES) {
+               KLIPS_PRINT(debug_xform,
+                           "klips_debug:ipsec_SAref_recycle: "
+                           "end of table reached, continuing at start..\n");
+               ipsec_sadb.refFreeListCont = 0;
+       }
+
+       KLIPS_PRINT(debug_xform,
+                   "klips_debug:ipsec_SAref_recycle: "
+                   "recycling, continuing from SAref=%d (0p%p), table=%d, entry=%d.\n",
+                   ipsec_sadb.refFreeListCont,
+                   (ipsec_sadb.refTable[IPsecSAref2table(ipsec_sadb.refFreeListCont)] != NULL) ? IPsecSAref2SA(ipsec_sadb.refFreeListCont) : NULL,
+                   IPsecSAref2table(ipsec_sadb.refFreeListCont),
+                   IPsecSAref2entry(ipsec_sadb.refFreeListCont));
+
+       for(table = IPsecSAref2table(ipsec_sadb.refFreeListCont);
+           table < IPSEC_SA_REF_MAINTABLE_NUM_ENTRIES;
+           table++) {
+               if(ipsec_sadb.refTable[table] == NULL) {
+                       error = ipsec_SArefSubTable_alloc(table);
+                       if(error) {
+                               return error;
+                       }
+               }
+               for(entry = IPsecSAref2entry(ipsec_sadb.refFreeListCont);
+                   entry < IPSEC_SA_REF_SUBTABLE_NUM_ENTRIES;
+                   entry++) {
+                       if(ipsec_sadb.refTable[table]->entry[entry] == NULL) {
+                               ipsec_sadb.refFreeList[++ipsec_sadb.refFreeListTail] = IPsecSArefBuild(table, entry);
+                               if(ipsec_sadb.refFreeListTail == (IPSEC_SA_REF_FREELIST_NUM_ENTRIES - 1)) {
+                                       ipsec_sadb.refFreeListHead = 0;
+                                       ipsec_sadb.refFreeListCont = ipsec_sadb.refFreeList[ipsec_sadb.refFreeListTail] + 1;
+                                       KLIPS_PRINT(debug_xform,
+                                                   "klips_debug:ipsec_SAref_recycle: "
+                                                   "SArefFreeList refilled.\n");
+                                       return 0;
+                               }
+                       }
+               }
+       }
+
+       if(ipsec_sadb.refFreeListTail == -1) {
+               KLIPS_PRINT(debug_xform,
+                           "klips_debug:ipsec_SAref_recycle: "
+                           "out of room in the SArefTable.\n");
+
+               return(-ENOSPC);
+       }
+
+       ipsec_sadb.refFreeListHead = 0;
+       ipsec_sadb.refFreeListCont = ipsec_sadb.refFreeList[ipsec_sadb.refFreeListTail] + 1;
+       KLIPS_PRINT(debug_xform,
+                   "klips_debug:ipsec_SAref_recycle: "
+                   "SArefFreeList partly refilled to %d of %d.\n",
+                   ipsec_sadb.refFreeListTail,
+                   IPSEC_SA_REF_FREELIST_NUM_ENTRIES);
+       return 0;
+}
+
+int
+ipsec_SArefSubTable_alloc(unsigned table)
+{
+       unsigned entry;
+       struct IPsecSArefSubTable* SArefsub;
+
+       KLIPS_PRINT(debug_xform,
+                   "klips_debug:ipsec_SArefSubTable_alloc: "
+                   "allocating %lu bytes for table %u of %u.\n",
+                   (unsigned long) (IPSEC_SA_REF_SUBTABLE_NUM_ENTRIES * sizeof(struct ipsec_sa *)),
+                   table,
+                   IPSEC_SA_REF_MAINTABLE_NUM_ENTRIES);
+
+       /* allocate another sub-table */
+       SArefsub = vmalloc(IPSEC_SA_REF_SUBTABLE_NUM_ENTRIES * sizeof(struct ipsec_sa *));
+       if(SArefsub == NULL) {
+               KLIPS_PRINT(debug_xform,
+                           "klips_debug:ipsec_SArefSubTable_alloc: "
+                           "error allocating memory for table %u of %u!\n",
+                           table,
+                           IPSEC_SA_REF_MAINTABLE_NUM_ENTRIES);
+               return -ENOMEM;
+       }
+
+       /* add this sub-table to the main table */
+       ipsec_sadb.refTable[table] = SArefsub;
+
+       /* initialise each element to NULL */
+       KLIPS_PRINT(debug_xform,
+                   "klips_debug:ipsec_SArefSubTable_alloc: "
+                   "initialising %u elements (2 ^ %u) of table %u.\n",
+                   IPSEC_SA_REF_SUBTABLE_NUM_ENTRIES,
+                   IPSEC_SA_REF_SUBTABLE_IDX_WIDTH,
+                   table);
+       for(entry = 0; entry < IPSEC_SA_REF_SUBTABLE_NUM_ENTRIES; entry++) {
+               SArefsub->entry[entry] = NULL;
+       }
+
+       return 0;
+}
+#endif /* IPSEC_SA_REF_CODE */
+
+int
+ipsec_saref_freelist_init(void)
+{
+       int i;
+
+       KLIPS_PRINT(debug_xform,
+                   "klips_debug:ipsec_saref_freelist_init: "
+                   "initialising %u elements of FreeList.\n",
+                   IPSEC_SA_REF_FREELIST_NUM_ENTRIES);
+
+       for(i = 0; i < IPSEC_SA_REF_FREELIST_NUM_ENTRIES; i++) {
+               ipsec_sadb.refFreeList[i] = IPSEC_SAREF_NULL;
+       }
+       ipsec_sadb.refFreeListHead = -1;
+       ipsec_sadb.refFreeListCont = 0;
+       ipsec_sadb.refFreeListTail = -1;
+       
+       return 0;
+}
+
+int
+ipsec_sadb_init(void)
+{
+       int error = 0;
+       unsigned i;
+
+       for(i = 0; i < SADB_HASHMOD; i++) {
+               ipsec_sadb_hash[i] = NULL;
+       }
+       /* parts above are for the old style SADB hash table */
+       
+
+#if IPSEC_SA_REF_CODE
+       /* initialise SA reference table */
+
+       /* initialise the main table */
+       KLIPS_PRINT(debug_xform,
+                   "klips_debug:ipsec_sadb_init: "
+                   "initialising main table of size %u (2 ^ %u).\n",
+                   IPSEC_SA_REF_MAINTABLE_NUM_ENTRIES,
+                   IPSEC_SA_REF_MAINTABLE_IDX_WIDTH);
+       {
+               unsigned table;
+               for(table = 0; table < IPSEC_SA_REF_MAINTABLE_NUM_ENTRIES; table++) {
+                       ipsec_sadb.refTable[table] = NULL;
+               }
+       }
+
+       /* allocate the first sub-table */
+       error = ipsec_SArefSubTable_alloc(0);
+       if(error) {
+               return error;
+       }
+
+       error = ipsec_saref_freelist_init();
+#endif /* IPSEC_SA_REF_CODE */
+       return error;
+}
+
+#if IPSEC_SA_REF_CODE
+IPsecSAref_t
+ipsec_SAref_alloc(int*error) /* pass in error var by pointer */
+{
+       IPsecSAref_t SAref;
+
+       KLIPS_PRINT(debug_xform,
+                   "klips_debug:ipsec_SAref_alloc: "
+                   "SAref requested... head=%d, cont=%d, tail=%d, listsize=%d.\n",
+                   ipsec_sadb.refFreeListHead,
+                   ipsec_sadb.refFreeListCont,
+                   ipsec_sadb.refFreeListTail,
+                   IPSEC_SA_REF_FREELIST_NUM_ENTRIES);
+
+       if(ipsec_sadb.refFreeListHead == -1) {
+               KLIPS_PRINT(debug_xform,
+                           "klips_debug:ipsec_SAref_alloc: "
+                           "FreeList empty, recycling...\n");
+               *error = ipsec_SAref_recycle();
+               if(*error) {
+                       return IPSEC_SAREF_NULL;
+               }
+       }
+
+       SAref = ipsec_sadb.refFreeList[ipsec_sadb.refFreeListHead];
+       if(SAref == IPSEC_SAREF_NULL) {
+               KLIPS_PRINT(debug_xform,
+                           "klips_debug:ipsec_SAref_alloc: "
+                           "unexpected error, refFreeListHead = %d points to invalid entry.\n",
+                           ipsec_sadb.refFreeListHead);
+                       *error = -ESPIPE;
+                       return IPSEC_SAREF_NULL;
+       }
+
+       KLIPS_PRINT(debug_xform,
+                   "klips_debug:ipsec_SAref_alloc: "
+                   "allocating SAref=%d, table=%u, entry=%u of %u.\n",
+                   SAref,
+                   IPsecSAref2table(SAref),
+                   IPsecSAref2entry(SAref),
+                   IPSEC_SA_REF_MAINTABLE_NUM_ENTRIES * IPSEC_SA_REF_SUBTABLE_NUM_ENTRIES);
+       
+       ipsec_sadb.refFreeList[ipsec_sadb.refFreeListHead] = IPSEC_SAREF_NULL;
+       ipsec_sadb.refFreeListHead++;
+       if(ipsec_sadb.refFreeListHead > ipsec_sadb.refFreeListTail) {
+               KLIPS_PRINT(debug_xform,
+                           "klips_debug:ipsec_SAref_alloc: "
+                           "last FreeList entry allocated, resetting list head to empty.\n");
+               ipsec_sadb.refFreeListHead = -1;
+       }
+
+       return SAref;
+}
+#endif /* IPSEC_SA_REF_CODE */
+
+int
+ipsec_sa_print(struct ipsec_sa *ips)
+{
+        char sa[SATOT_BUF];
+       size_t sa_len;
+
+       printk(KERN_INFO "klips_debug:   SA:");
+       if(ips == NULL) {
+               printk("NULL\n");
+               return -ENOENT;
+       }
+       printk(" ref=%d", ips->ips_ref);
+       printk(" refcount=%d", atomic_read(&ips->ips_refcount));
+       if(ips->ips_hnext != NULL) {
+               printk(" hnext=0p%p", ips->ips_hnext);
+       }
+       if(ips->ips_inext != NULL) {
+               printk(" inext=0p%p", ips->ips_inext);
+       }
+       if(ips->ips_onext != NULL) {
+               printk(" onext=0p%p", ips->ips_onext);
+       }
+       sa_len = satot(&ips->ips_said, 0, sa, sizeof(sa));
+       printk(" said=%s", sa_len ? sa : " (error)");
+       if(ips->ips_seq) {
+               printk(" seq=%u", ips->ips_seq);
+       }
+       if(ips->ips_pid) {
+               printk(" pid=%u", ips->ips_pid);
+       }
+       if(ips->ips_authalg) {
+               printk(" authalg=%u", ips->ips_authalg);
+       }
+       if(ips->ips_encalg) {
+               printk(" encalg=%u", ips->ips_encalg);
+       }
+       printk(" XFORM=%s%s%s", IPS_XFORM_NAME(ips));
+       if(ips->ips_replaywin) {
+               printk(" ooowin=%u", ips->ips_replaywin);
+       }
+       if(ips->ips_flags) {
+               printk(" flags=%u", ips->ips_flags);
+       }
+       if(ips->ips_addr_s) {
+               char buf[SUBNETTOA_BUF];
+               addrtoa(((struct sockaddr_in*)(ips->ips_addr_s))->sin_addr,
+                       0, buf, sizeof(buf));
+               printk(" src=%s", buf);
+       }
+       if(ips->ips_addr_d) {
+               char buf[SUBNETTOA_BUF];
+               addrtoa(((struct sockaddr_in*)(ips->ips_addr_s))->sin_addr,
+                       0, buf, sizeof(buf));
+               printk(" dst=%s", buf);
+       }
+       if(ips->ips_addr_p) {
+               char buf[SUBNETTOA_BUF];
+               addrtoa(((struct sockaddr_in*)(ips->ips_addr_p))->sin_addr,
+                       0, buf, sizeof(buf));
+               printk(" proxy=%s", buf);
+       }
+       if(ips->ips_key_bits_a) {
+               printk(" key_bits_a=%u", ips->ips_key_bits_a);
+       }
+       if(ips->ips_key_bits_e) {
+               printk(" key_bits_e=%u", ips->ips_key_bits_e);
+       }
+
+       printk("\n");
+       return 0;
+}
+
+struct ipsec_sa*
+ipsec_sa_alloc(int*error) /* pass in error var by pointer */
+{
+       struct ipsec_sa* ips;
+
+       if((ips = kmalloc(sizeof(*ips), GFP_ATOMIC) ) == NULL) {
+               KLIPS_PRINT(debug_xform,
+                           "klips_debug:ipsec_sa_alloc: "
+                           "memory allocation error\n");
+               *error = -ENOMEM;
+               return NULL;
+       }
+       memset((caddr_t)ips, 0, sizeof(*ips));
+#if IPSEC_SA_REF_CODE
+       ips->ips_ref = ipsec_SAref_alloc(error); /* pass in error return by pointer */
+       KLIPS_PRINT(debug_xform,
+                   "klips_debug:ipsec_sa_alloc: "
+                   "allocated %lu bytes for ipsec_sa struct=0p%p ref=%d.\n",
+                   (unsigned long) sizeof(*ips),
+                   ips,
+                   ips->ips_ref);
+       if(ips->ips_ref == IPSEC_SAREF_NULL) {
+               kfree(ips);
+               KLIPS_PRINT(debug_xform,
+                           "klips_debug:ipsec_sa_alloc: "
+                           "SAref allocation error\n");
+               return NULL;
+       }
+
+       atomic_inc(&ips->ips_refcount);
+       IPsecSAref2SA(ips->ips_ref) = ips;
+#endif /* IPSEC_SA_REF_CODE */
+
+       *error = 0;
+       return(ips);
+}
+
+int
+ipsec_sa_free(struct ipsec_sa* ips)
+{
+       return ipsec_sa_wipe(ips);
+}
+
+struct ipsec_sa *
+ipsec_sa_getbyid(ip_said *said)
+{
+       int hashval;
+       struct ipsec_sa *ips;
+        char sa[SATOT_BUF];
+       size_t sa_len;
+
+       if(said == NULL) {
+               KLIPS_PRINT(debug_xform,
+                           "klips_error:ipsec_sa_getbyid: "
+                           "null pointer passed in!\n");
+               return NULL;
+       }
+
+       sa_len = KLIPS_SATOT(debug_xform, said, 0, sa, sizeof(sa));
+
+       hashval = IPS_HASH(said);
+       
+       KLIPS_PRINT(debug_xform,
+                   "klips_debug:ipsec_sa_getbyid: "
+                   "linked entry in ipsec_sa table for hash=%d of SA:%s requested.\n",
+                   hashval,
+                   sa_len ? sa : " (error)");
+
+       if((ips = ipsec_sadb_hash[hashval]) == NULL) {
+               KLIPS_PRINT(debug_xform,
+                           "klips_debug:ipsec_sa_getbyid: "
+                           "no entries in ipsec_sa table for hash=%d of SA:%s.\n",
+                           hashval,
+                           sa_len ? sa : " (error)");
+               return NULL;
+       }
+
+       for (; ips; ips = ips->ips_hnext) {
+               if ((ips->ips_said.spi == said->spi) &&
+                   (ips->ips_said.dst.u.v4.sin_addr.s_addr == said->dst.u.v4.sin_addr.s_addr) &&
+                   (ips->ips_said.proto == said->proto)) {
+                       atomic_inc(&ips->ips_refcount);
+                       return ips;
+               }
+       }
+       
+       KLIPS_PRINT(debug_xform,
+                   "klips_debug:ipsec_sa_getbyid: "
+                   "no entry in linked list for hash=%d of SA:%s.\n",
+                   hashval,
+                   sa_len ? sa : " (error)");
+       return NULL;
+}
+
+int
+ipsec_sa_put(struct ipsec_sa *ips)
+{
+        char sa[SATOT_BUF];
+       size_t sa_len;
+
+       if(ips == NULL) {
+               KLIPS_PRINT(debug_xform,
+                           "klips_error:ipsec_sa_put: "
+                           "null pointer passed in!\n");
+               return -1;
+       }
+
+       sa_len = KLIPS_SATOT(debug_xform, &ips->ips_said, 0, sa, sizeof(sa));
+
+       KLIPS_PRINT(debug_xform,
+                   "klips_debug:ipsec_sa_put: "
+                   "ipsec_sa SA:%s, ref:%d reference count decremented.\n",
+                   sa_len ? sa : " (error)",
+                   ips->ips_ref);
+
+       atomic_dec(&ips->ips_refcount);
+
+       return 0;
+}
+
+/*
+  The ipsec_sa table better *NOT* be locked before it is handed in, or SMP locks will happen
+*/
+int
+ipsec_sa_add(struct ipsec_sa *ips)
+{
+       int error = 0;
+       unsigned int hashval;
+
+       if(ips == NULL) {
+               KLIPS_PRINT(debug_xform,
+                           "klips_error:ipsec_sa_add: "
+                           "null pointer passed in!\n");
+               return -ENODATA;
+       }
+       hashval = IPS_HASH(&ips->ips_said);
+
+       atomic_inc(&ips->ips_refcount);
+       spin_lock_bh(&tdb_lock);
+       
+       ips->ips_hnext = ipsec_sadb_hash[hashval];
+       ipsec_sadb_hash[hashval] = ips;
+       
+       spin_unlock_bh(&tdb_lock);
+
+       return error;
+}
+
+/*
+  The ipsec_sa table better be locked before it is handed in, or races might happen
+*/
+int
+ipsec_sa_del(struct ipsec_sa *ips)
+{
+       unsigned int hashval;
+       struct ipsec_sa *ipstp;
+        char sa[SATOT_BUF];
+       size_t sa_len;
+
+       if(ips == NULL) {
+               KLIPS_PRINT(debug_xform,
+                           "klips_error:ipsec_sa_del: "
+                           "null pointer passed in!\n");
+               return -ENODATA;
+       }
+       
+       sa_len = KLIPS_SATOT(debug_xform, &ips->ips_said, 0, sa, sizeof(sa));
+       if(ips->ips_inext || ips->ips_onext) {
+               KLIPS_PRINT(debug_xform,
+                           "klips_error:ipsec_sa_del: "
+                           "SA:%s still linked!\n",
+                           sa_len ? sa : " (error)");
+               return -EMLINK;
+       }
+       
+       hashval = IPS_HASH(&ips->ips_said);
+       
+       KLIPS_PRINT(debug_xform,
+                   "klips_debug:ipsec_sa_del: "
+                   "deleting SA:%s, hashval=%d.\n",
+                   sa_len ? sa : " (error)",
+                   hashval);
+       if(ipsec_sadb_hash[hashval] == NULL) {
+               KLIPS_PRINT(debug_xform,
+                           "klips_debug:ipsec_sa_del: "
+                           "no entries in ipsec_sa table for hash=%d of SA:%s.\n",
+                           hashval,
+                           sa_len ? sa : " (error)");
+               return -ENOENT;
+       }
+       
+       if (ips == ipsec_sadb_hash[hashval]) {
+               ipsec_sadb_hash[hashval] = ipsec_sadb_hash[hashval]->ips_hnext;
+               ips->ips_hnext = NULL;
+               atomic_dec(&ips->ips_refcount);
+               KLIPS_PRINT(debug_xform,
+                           "klips_debug:ipsec_sa_del: "
+                           "successfully deleted first ipsec_sa in chain.\n");
+               return 0;
+       } else {
+               for (ipstp = ipsec_sadb_hash[hashval];
+                    ipstp;
+                    ipstp = ipstp->ips_hnext) {
+                       if (ipstp->ips_hnext == ips) {
+                               ipstp->ips_hnext = ips->ips_hnext;
+                               ips->ips_hnext = NULL;
+                               atomic_dec(&ips->ips_refcount);
+                               KLIPS_PRINT(debug_xform,
+                                           "klips_debug:ipsec_sa_del: "
+                                           "successfully deleted link in ipsec_sa chain.\n");
+                               return 0;
+                       }
+               }
+       }
+       
+       KLIPS_PRINT(debug_xform,
+                   "klips_debug:ipsec_sa_del: "
+                   "no entries in linked list for hash=%d of SA:%s.\n",
+                   hashval,
+                   sa_len ? sa : " (error)");
+       return -ENOENT;
+}
+
+/*
+  The ipsec_sa table better be locked before it is handed in, or races
+  might happen
+*/
+int
+ipsec_sa_delchain(struct ipsec_sa *ips)
+{
+       struct ipsec_sa *ipsdel;
+       int error = 0;
+        char sa[SATOT_BUF];
+       size_t sa_len;
+
+       if(ips == NULL) {
+               KLIPS_PRINT(debug_xform,
+                           "klips_error:ipsec_sa_delchain: "
+                           "null pointer passed in!\n");
+               return -ENODATA;
+       }
+
+       sa_len = KLIPS_SATOT(debug_xform, &ips->ips_said, 0, sa, sizeof(sa));
+       KLIPS_PRINT(debug_xform,
+                   "klips_debug:ipsec_sa_delchain: "
+                   "passed SA:%s\n",
+                   sa_len ? sa : " (error)");
+       while(ips->ips_onext != NULL) {
+               ips = ips->ips_onext;
+       }
+
+       while(ips) {
+               /* XXX send a pfkey message up to advise of deleted ipsec_sa */
+               sa_len = KLIPS_SATOT(debug_xform, &ips->ips_said, 0, sa, sizeof(sa));
+               KLIPS_PRINT(debug_xform,
+                           "klips_debug:ipsec_sa_delchain: "
+                           "unlinking and delting SA:%s",
+                           sa_len ? sa : " (error)");
+               ipsdel = ips;
+               ips = ips->ips_inext;
+               if(ips != NULL) {
+                       sa_len = KLIPS_SATOT(debug_xform, &ips->ips_said, 0, sa, sizeof(sa));
+                       KLIPS_PRINT(debug_xform,
+                                   ", inext=%s",
+                                   sa_len ? sa : " (error)");
+                       atomic_dec(&ipsdel->ips_refcount);
+                       ipsdel->ips_inext = NULL;
+                       atomic_dec(&ips->ips_refcount);
+                       ips->ips_onext = NULL;
+               }
+               KLIPS_PRINT(debug_xform,
+                           ".\n");
+               if((error = ipsec_sa_del(ipsdel))) {
+                       KLIPS_PRINT(debug_xform,
+                                   "klips_debug:ipsec_sa_delchain: "
+                                   "ipsec_sa_del returned error %d.\n", -error);
+                       return error;
+               }
+               if((error = ipsec_sa_wipe(ipsdel))) {
+                       KLIPS_PRINT(debug_xform,
+                                   "klips_debug:ipsec_sa_delchain: "
+                                   "ipsec_sa_wipe returned error %d.\n", -error);
+                       return error;
+               }
+       }
+       return error;
+}
+
+int 
+ipsec_sadb_cleanup(__u8 proto)
+{
+       unsigned i;
+       int error = 0;
+       struct ipsec_sa *ips, **ipsprev, *ipsdel;
+        char sa[SATOT_BUF];
+       size_t sa_len;
+
+       KLIPS_PRINT(debug_xform,
+                   "klips_debug:ipsec_sadb_cleanup: "
+                   "cleaning up proto=%d.\n",
+                   proto);
+
+       spin_lock_bh(&tdb_lock);
+
+       for (i = 0; i < SADB_HASHMOD; i++) {
+               ipsprev = &(ipsec_sadb_hash[i]);
+               ips = ipsec_sadb_hash[i];
+               if(ips != NULL) {
+                       atomic_inc(&ips->ips_refcount);
+               }
+               for(; ips != NULL;) {
+                       sa_len = KLIPS_SATOT(debug_xform, &ips->ips_said, 0, sa, sizeof(sa));
+                       KLIPS_PRINT(debug_xform,
+                                   "klips_debug:ipsec_sadb_cleanup: "
+                                   "checking SA:%s, hash=%d, ref=%d",
+                                   sa_len ? sa : " (error)",
+                                   i,
+                                   ips->ips_ref);
+                       ipsdel = ips;
+                       ips = ipsdel->ips_hnext;
+                       if(ips != NULL) {
+                               atomic_inc(&ips->ips_refcount);
+                               sa_len = KLIPS_SATOT(debug_xform, &ips->ips_said, 0, sa, sizeof(sa));
+                               KLIPS_PRINT(debug_xform,
+                                           ", hnext=%s",
+                                           sa_len ? sa : " (error)");
+                       }
+                       if(*ipsprev != NULL) {
+                               sa_len = KLIPS_SATOT(debug_xform, &(*ipsprev)->ips_said, 0, sa, sizeof(sa));
+                               KLIPS_PRINT(debug_xform,
+                                           ", *ipsprev=%s",
+                                           sa_len ? sa : " (error)");
+                               if((*ipsprev)->ips_hnext) {
+                                       sa_len = KLIPS_SATOT(debug_xform, &(*ipsprev)->ips_hnext->ips_said, 0, sa, sizeof(sa));
+                                       KLIPS_PRINT(debug_xform,
+                                                   ", *ipsprev->ips_hnext=%s",
+                                                   sa_len ? sa : " (error)");
+                               }
+                       }
+                       KLIPS_PRINT(debug_xform,
+                                   ".\n");
+                       if(proto == 0 || (proto == ipsdel->ips_said.proto)) {
+                               sa_len = KLIPS_SATOT(debug_xform, &ipsdel->ips_said, 0, sa, sizeof(sa));
+                               KLIPS_PRINT(debug_xform,
+                                           "klips_debug:ipsec_sadb_cleanup: "
+                                           "deleting SA chain:%s.\n",
+                                           sa_len ? sa : " (error)");
+                               if((error = ipsec_sa_delchain(ipsdel))) {
+                                       SENDERR(-error);
+                               }
+                               ipsprev = &(ipsec_sadb_hash[i]);
+                               ips = ipsec_sadb_hash[i];
+
+                               KLIPS_PRINT(debug_xform,
+                                           "klips_debug:ipsec_sadb_cleanup: "
+                                           "deleted SA chain:%s",
+                                           sa_len ? sa : " (error)");
+                               if(ips != NULL) {
+                                       sa_len = KLIPS_SATOT(debug_xform, &ips->ips_said, 0, sa, sizeof(sa));
+                                       KLIPS_PRINT(debug_xform,
+                                                   ", ipsec_sadb_hash[%d]=%s",
+                                                   i,
+                                                   sa_len ? sa : " (error)");
+                               }
+                               if(*ipsprev != NULL) {
+                                       sa_len = KLIPS_SATOT(debug_xform, &(*ipsprev)->ips_said, 0, sa, sizeof(sa));
+                                       KLIPS_PRINT(debug_xform,
+                                                   ", *ipsprev=%s",
+                                                   sa_len ? sa : " (error)");
+                                       if((*ipsprev)->ips_hnext != NULL) {
+                                               sa_len = KLIPS_SATOT(debug_xform, &(*ipsprev)->ips_hnext->ips_said, 0, sa, sizeof(sa));
+                                               KLIPS_PRINT(debug_xform,
+                                                           ", *ipsprev->ips_hnext=%s",
+                                                           sa_len ? sa : " (error)");
+                                       }
+                               }
+                               KLIPS_PRINT(debug_xform,
+                                           ".\n");
+                       } else {
+                               ipsprev = &ipsdel;
+                       }
+                       if(ipsdel != NULL) {
+                               ipsec_sa_put(ipsdel);
+                       }
+               }
+       }
+ errlab:
+
+       spin_unlock_bh(&tdb_lock);
+
+
+#if IPSEC_SA_REF_CODE
+       /* clean up SA reference table */
+
+       /* go through the ref table and clean out all the SAs */
+       KLIPS_PRINT(debug_xform,
+                   "klips_debug:ipsec_sadb_cleanup: "
+                   "removing SAref entries and tables.");
+       {
+               unsigned table, entry;
+               for(table = 0; table < IPSEC_SA_REF_MAINTABLE_NUM_ENTRIES; table++) {
+                       KLIPS_PRINT(debug_xform,
+                                   "klips_debug:ipsec_sadb_cleanup: "
+                                   "cleaning SAref table=%u.\n",
+                                   table);
+                       if(ipsec_sadb.refTable[table] == NULL) {
+                               printk("\n");
+                               KLIPS_PRINT(debug_xform,
+                                           "klips_debug:ipsec_sadb_cleanup: "
+                                           "cleaned %u used refTables.\n",
+                                           table);
+                               break;
+                       }
+                       for(entry = 0; entry < IPSEC_SA_REF_SUBTABLE_NUM_ENTRIES; entry++) {
+                               if(ipsec_sadb.refTable[table]->entry[entry] != NULL) {
+                                       ipsec_sa_delchain(ipsec_sadb.refTable[table]->entry[entry]);
+                                       ipsec_sadb.refTable[table]->entry[entry] = NULL;
+                               }
+                       }
+               }
+       }
+#endif /* IPSEC_SA_REF_CODE */
+
+       return(error);
+}
+
+int 
+ipsec_sadb_free(void)
+{
+       int error = 0;
+
+       KLIPS_PRINT(debug_xform,
+                   "klips_debug:ipsec_sadb_free: "
+                   "freeing SArefTable memory.\n");
+
+       /* clean up SA reference table */
+
+       /* go through the ref table and clean out all the SAs if any are
+          left and free table memory */
+       KLIPS_PRINT(debug_xform,
+                   "klips_debug:ipsec_sadb_free: "
+                   "removing SAref entries and tables.\n");
+       {
+               unsigned table, entry;
+               for(table = 0; table < IPSEC_SA_REF_MAINTABLE_NUM_ENTRIES; table++) {
+                       KLIPS_PRINT(debug_xform,
+                                   "klips_debug:ipsec_sadb_free: "
+                                   "removing SAref table=%u.\n",
+                                   table);
+                       if(ipsec_sadb.refTable[table] == NULL) {
+                               KLIPS_PRINT(debug_xform,
+                                           "klips_debug:ipsec_sadb_free: "
+                                           "removed %u used refTables.\n",
+                                           table);
+                               break;
+                       }
+                       for(entry = 0; entry < IPSEC_SA_REF_SUBTABLE_NUM_ENTRIES; entry++) {
+                               if(ipsec_sadb.refTable[table]->entry[entry] != NULL) {
+                                       ipsec_sa_delchain(ipsec_sadb.refTable[table]->entry[entry]);
+                                       ipsec_sadb.refTable[table]->entry[entry] = NULL;
+                               }
+                       }
+                       vfree(ipsec_sadb.refTable[table]);
+                       ipsec_sadb.refTable[table] = NULL;
+               }
+       }
+
+       return(error);
+}
+
+int
+ipsec_sa_wipe(struct ipsec_sa *ips)
+{
+       if(ips == NULL) {
+               return -ENODATA;
+       }
+
+       /* if(atomic_dec_and_test(ips)) {
+       }; */
+
+#if IPSEC_SA_REF_CODE
+       /* remove me from the SArefTable */
+       {
+               char sa[SATOT_BUF];
+               size_t sa_len;
+               sa_len = KLIPS_SATOT(debug_xform, &ips->ips_said, 0, sa, sizeof(sa));
+               KLIPS_PRINT(debug_xform,
+                           "klips_debug:ipsec_sa_wipe: "
+                           "removing SA=%s(0p%p), SAref=%d, table=%d(0p%p), entry=%d from the refTable.\n",
+                           sa_len ? sa : " (error)",
+                           ips,
+                           ips->ips_ref,
+                           IPsecSAref2table(IPsecSA2SAref(ips)),
+                           ipsec_sadb.refTable[IPsecSAref2table(IPsecSA2SAref(ips))],
+                           IPsecSAref2entry(IPsecSA2SAref(ips)));
+       }
+       if(ips->ips_ref == IPSEC_SAREF_NULL) {
+               KLIPS_PRINT(debug_xform,
+                           "klips_debug:ipsec_sa_wipe: "
+                           "why does this SA not have a valid SAref?.\n");
+       }
+       ipsec_sadb.refTable[IPsecSAref2table(IPsecSA2SAref(ips))]->entry[IPsecSAref2entry(IPsecSA2SAref(ips))] = NULL;
+       ips->ips_ref = IPSEC_SAREF_NULL;
+       ipsec_sa_put(ips);
+#endif /* IPSEC_SA_REF_CODE */
+
+       /* paranoid clean up */
+       if(ips->ips_addr_s != NULL) {
+               memset((caddr_t)(ips->ips_addr_s), 0, ips->ips_addr_s_size);
+               kfree(ips->ips_addr_s);
+       }
+       ips->ips_addr_s = NULL;
+
+       if(ips->ips_addr_d != NULL) {
+               memset((caddr_t)(ips->ips_addr_d), 0, ips->ips_addr_d_size);
+               kfree(ips->ips_addr_d);
+       }
+       ips->ips_addr_d = NULL;
+
+       if(ips->ips_addr_p != NULL) {
+               memset((caddr_t)(ips->ips_addr_p), 0, ips->ips_addr_p_size);
+               kfree(ips->ips_addr_p);
+       }
+       ips->ips_addr_p = NULL;
+
+#ifdef CONFIG_IPSEC_NAT_TRAVERSAL
+       if(ips->ips_natt_oa) {
+               memset((caddr_t)(ips->ips_natt_oa), 0, ips->ips_natt_oa_size);
+               kfree(ips->ips_natt_oa);
+       }
+       ips->ips_natt_oa = NULL;
+#endif
+
+       if(ips->ips_key_a != NULL) {
+               memset((caddr_t)(ips->ips_key_a), 0, ips->ips_key_a_size);
+               kfree(ips->ips_key_a);
+       }
+       ips->ips_key_a = NULL;
+
+       if(ips->ips_key_e != NULL) {
+               if (ips->ips_alg_enc &&
+                   ips->ips_alg_enc->ixt_e_destroy_key)
+               {
+                       ips->ips_alg_enc->ixt_e_destroy_key(ips->ips_alg_enc, 
+                                                           ips->ips_key_e);
+               } else
+               {
+                       memset((caddr_t)(ips->ips_key_e), 0, ips->ips_key_e_size);
+                       kfree(ips->ips_key_e);
+               }
+       }
+       ips->ips_key_e = NULL;
+
+       if(ips->ips_iv != NULL) {
+               memset((caddr_t)(ips->ips_iv), 0, ips->ips_iv_size);
+               kfree(ips->ips_iv);
+       }
+       ips->ips_iv = NULL;
+
+       if(ips->ips_ident_s.data != NULL) {
+               memset((caddr_t)(ips->ips_ident_s.data),
+                       0,
+                      ips->ips_ident_s.len * IPSEC_PFKEYv2_ALIGN - sizeof(struct sadb_ident));
+               kfree(ips->ips_ident_s.data);
+        }
+       ips->ips_ident_s.data = NULL;
+       
+       if(ips->ips_ident_d.data != NULL) {
+               memset((caddr_t)(ips->ips_ident_d.data),
+                       0,
+                      ips->ips_ident_d.len * IPSEC_PFKEYv2_ALIGN - sizeof(struct sadb_ident));
+               kfree(ips->ips_ident_d.data);
+        }
+       ips->ips_ident_d.data = NULL;
+
+#ifdef CONFIG_KLIPS_ALG
+       if (ips->ips_alg_enc||ips->ips_alg_auth) {
+               ipsec_alg_sa_wipe(ips);
+       }
+#endif /* CONFIG_KLIPS_ALG */
+       
+       memset((caddr_t)ips, 0, sizeof(*ips));
+       kfree(ips);
+       ips = NULL;
+
+       return 0;
+}
+
+extern int sysctl_ipsec_debug_verbose;
+
+int ipsec_sa_init(struct ipsec_sa *ipsp)
+{
+        int i;
+        int error = 0;
+        char sa[SATOT_BUF];
+       size_t sa_len;
+       char ipaddr_txt[ADDRTOA_BUF];
+       char ipaddr2_txt[ADDRTOA_BUF];
+#if defined (CONFIG_KLIPS_AUTH_HMAC_MD5) || defined (CONFIG_KLIPS_AUTH_HMAC_SHA1)
+       unsigned char kb[AHMD596_BLKLEN];
+#endif
+#if defined CONFIG_KLIPS_ALG
+       struct ipsec_alg_enc *ixt_e = NULL;
+       struct ipsec_alg_auth *ixt_a = NULL;
+#endif /* CONFIG_KLIPS_ALG */
+
+       if(ipsp == NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "ipsec_sa_init: "
+                           "ipsp is NULL, fatal\n");
+               SENDERR(EINVAL);
+       }
+
+       sa_len = KLIPS_SATOT(debug_pfkey, &ipsp->ips_said, 0, sa, sizeof(sa));
+
+        KLIPS_PRINT(debug_pfkey,
+                   "ipsec_sa_init: "
+                   "(pfkey defined) called for SA:%s\n",
+                   sa_len ? sa : " (error)");
+
+       KLIPS_PRINT(debug_pfkey,
+                   "ipsec_sa_init: "
+                   "calling init routine of %s%s%s\n",
+                   IPS_XFORM_NAME(ipsp));
+       
+       switch(ipsp->ips_said.proto) {
+               
+#ifdef CONFIG_KLIPS_IPIP
+       case IPPROTO_IPIP: {
+               addrtoa(((struct sockaddr_in*)(ipsp->ips_addr_s))->sin_addr,
+                       0,
+                       ipaddr_txt, sizeof(ipaddr_txt));
+               addrtoa(((struct sockaddr_in*)(ipsp->ips_addr_d))->sin_addr,
+                       0,
+                       ipaddr2_txt, sizeof(ipaddr_txt));
+               KLIPS_PRINT(debug_pfkey,
+                           "ipsec_sa_init: "
+                           "(pfkey defined) IPIP ipsec_sa set for %s->%s.\n",
+                           ipaddr_txt,
+                           ipaddr2_txt);
+       }
+       break;
+#endif /* !CONFIG_KLIPS_IPIP */
+
+#ifdef CONFIG_KLIPS_AH
+       case IPPROTO_AH:
+               switch(ipsp->ips_authalg) {
+# ifdef CONFIG_KLIPS_AUTH_HMAC_MD5
+               case AH_MD5: {
+                       unsigned char *akp;
+                       unsigned int aks;
+                       MD5_CTX *ictx;
+                       MD5_CTX *octx;
+                       
+                       if(ipsp->ips_key_bits_a != (AHMD596_KLEN * 8)) {
+                               KLIPS_PRINT(debug_pfkey,
+                                           "ipsec_sa_init: "
+                                           "incorrect key size: %d bits -- must be %d bits\n"/*octets (bytes)\n"*/,
+                                           ipsp->ips_key_bits_a, AHMD596_KLEN * 8);
+                               SENDERR(EINVAL);
+                       }
+                       
+#  if KLIPS_DIVULGE_HMAC_KEY
+                       KLIPS_PRINT(debug_pfkey && sysctl_ipsec_debug_verbose,
+                                   "ipsec_sa_init: "
+                                   "hmac md5-96 key is 0x%08x %08x %08x %08x\n",
+                                   ntohl(*(((__u32 *)ipsp->ips_key_a)+0)),
+                                   ntohl(*(((__u32 *)ipsp->ips_key_a)+1)),
+                                   ntohl(*(((__u32 *)ipsp->ips_key_a)+2)),
+                                   ntohl(*(((__u32 *)ipsp->ips_key_a)+3)));
+#  endif /* KLIPS_DIVULGE_HMAC_KEY */
+                       
+                       ipsp->ips_auth_bits = AHMD596_ALEN * 8;
+                       
+                       /* save the pointer to the key material */
+                       akp = ipsp->ips_key_a;
+                       aks = ipsp->ips_key_a_size;
+                       
+                       KLIPS_PRINT(debug_pfkey && sysctl_ipsec_debug_verbose,
+                                  "ipsec_sa_init: "
+                                  "allocating %lu bytes for md5_ctx.\n",
+                                  (unsigned long) sizeof(struct md5_ctx));
+                       if((ipsp->ips_key_a = (caddr_t)
+                           kmalloc(sizeof(struct md5_ctx), GFP_ATOMIC)) == NULL) {
+                               ipsp->ips_key_a = akp;
+                               SENDERR(ENOMEM);
+                       }
+                       ipsp->ips_key_a_size = sizeof(struct md5_ctx);
+
+                       for (i = 0; i < DIVUP(ipsp->ips_key_bits_a, 8); i++) {
+                               kb[i] = akp[i] ^ HMAC_IPAD;
+                       }
+                       for (; i < AHMD596_BLKLEN; i++) {
+                               kb[i] = HMAC_IPAD;
+                       }
+
+                       ictx = &(((struct md5_ctx*)(ipsp->ips_key_a))->ictx);
+                       osMD5Init(ictx);
+                       osMD5Update(ictx, kb, AHMD596_BLKLEN);
+
+                       for (i = 0; i < AHMD596_BLKLEN; i++) {
+                               kb[i] ^= (HMAC_IPAD ^ HMAC_OPAD);
+                       }
+
+                       octx = &(((struct md5_ctx*)(ipsp->ips_key_a))->octx);
+                       osMD5Init(octx);
+                       osMD5Update(octx, kb, AHMD596_BLKLEN);
+                       
+#  if KLIPS_DIVULGE_HMAC_KEY
+                       KLIPS_PRINT(debug_pfkey && sysctl_ipsec_debug_verbose,
+                                   "ipsec_sa_init: "
+                                   "MD5 ictx=0x%08x %08x %08x %08x octx=0x%08x %08x %08x %08x\n",
+                                   ((__u32*)ictx)[0],
+                                   ((__u32*)ictx)[1],
+                                   ((__u32*)ictx)[2],
+                                   ((__u32*)ictx)[3],
+                                   ((__u32*)octx)[0],
+                                   ((__u32*)octx)[1],
+                                   ((__u32*)octx)[2],
+                                   ((__u32*)octx)[3] );
+#  endif /* KLIPS_DIVULGE_HMAC_KEY */
+                       
+                       /* zero key buffer -- paranoid */
+                       memset(akp, 0, aks);
+                       kfree(akp);
+               }
+               break;
+# endif /* CONFIG_KLIPS_AUTH_HMAC_MD5 */
+# ifdef CONFIG_KLIPS_AUTH_HMAC_SHA1
+               case AH_SHA: {
+                       unsigned char *akp;
+                       unsigned int aks;
+                       SHA1_CTX *ictx;
+                       SHA1_CTX *octx;
+                       
+                       if(ipsp->ips_key_bits_a != (AHSHA196_KLEN * 8)) {
+                               KLIPS_PRINT(debug_pfkey,
+                                           "ipsec_sa_init: "
+                                           "incorrect key size: %d bits -- must be %d bits\n"/*octets (bytes)\n"*/,
+                                           ipsp->ips_key_bits_a, AHSHA196_KLEN * 8);
+                               SENDERR(EINVAL);
+                       }
+                       
+#  if KLIPS_DIVULGE_HMAC_KEY
+                       KLIPS_PRINT(debug_pfkey && sysctl_ipsec_debug_verbose,
+                                   "ipsec_sa_init: "
+                                   "hmac sha1-96 key is 0x%08x %08x %08x %08x\n",
+                                   ntohl(*(((__u32 *)ipsp->ips_key_a)+0)),
+                                   ntohl(*(((__u32 *)ipsp->ips_key_a)+1)),
+                                   ntohl(*(((__u32 *)ipsp->ips_key_a)+2)),
+                                   ntohl(*(((__u32 *)ipsp->ips_key_a)+3)));
+#  endif /* KLIPS_DIVULGE_HMAC_KEY */
+                       
+                       ipsp->ips_auth_bits = AHSHA196_ALEN * 8;
+                       
+                       /* save the pointer to the key material */
+                       akp = ipsp->ips_key_a;
+                       aks = ipsp->ips_key_a_size;
+                       
+                       KLIPS_PRINT(debug_pfkey && sysctl_ipsec_debug_verbose,
+                                   "ipsec_sa_init: "
+                                   "allocating %lu bytes for sha1_ctx.\n",
+                                   (unsigned long) sizeof(struct sha1_ctx));
+                       if((ipsp->ips_key_a = (caddr_t)
+                           kmalloc(sizeof(struct sha1_ctx), GFP_ATOMIC)) == NULL) {
+                               ipsp->ips_key_a = akp;
+                               SENDERR(ENOMEM);
+                       }
+                       ipsp->ips_key_a_size = sizeof(struct sha1_ctx);
+
+                       for (i = 0; i < DIVUP(ipsp->ips_key_bits_a, 8); i++) {
+                               kb[i] = akp[i] ^ HMAC_IPAD;
+                       }
+                       for (; i < AHMD596_BLKLEN; i++) {
+                               kb[i] = HMAC_IPAD;
+                       }
+
+                       ictx = &(((struct sha1_ctx*)(ipsp->ips_key_a))->ictx);
+                       SHA1Init(ictx);
+                       SHA1Update(ictx, kb, AHSHA196_BLKLEN);
+
+                       for (i = 0; i < AHSHA196_BLKLEN; i++) {
+                               kb[i] ^= (HMAC_IPAD ^ HMAC_OPAD);
+                       }
+
+                       octx = &(((struct sha1_ctx*)(ipsp->ips_key_a))->octx);
+                       SHA1Init(octx);
+                       SHA1Update(octx, kb, AHSHA196_BLKLEN);
+                       
+#  if KLIPS_DIVULGE_HMAC_KEY
+                       KLIPS_PRINT(debug_pfkey && sysctl_ipsec_debug_verbose,
+                                   "ipsec_sa_init: "
+                                   "SHA1 ictx=0x%08x %08x %08x %08x octx=0x%08x %08x %08x %08x\n", 
+                                   ((__u32*)ictx)[0],
+                                   ((__u32*)ictx)[1],
+                                   ((__u32*)ictx)[2],
+                                   ((__u32*)ictx)[3],
+                                   ((__u32*)octx)[0],
+                                   ((__u32*)octx)[1],
+                                   ((__u32*)octx)[2],
+                                   ((__u32*)octx)[3] );
+#  endif /* KLIPS_DIVULGE_HMAC_KEY */
+                       /* zero key buffer -- paranoid */
+                       memset(akp, 0, aks);
+                       kfree(akp);
+               }
+               break;
+# endif /* CONFIG_KLIPS_AUTH_HMAC_SHA1 */
+               default:
+                       KLIPS_PRINT(debug_pfkey,
+                                   "ipsec_sa_init: "
+                                   "authalg=%d support not available in the kernel",
+                                   ipsp->ips_authalg);
+                       SENDERR(EINVAL);
+               }
+       break;
+#endif /* CONFIG_KLIPS_AH */
+
+#ifdef CONFIG_KLIPS_ESP
+       case IPPROTO_ESP:
+       {
+#if defined (CONFIG_KLIPS_AUTH_HMAC_MD5) || defined (CONFIG_KLIPS_AUTH_HMAC_SHA1)
+               unsigned char *akp;
+               unsigned int aks;
+#endif
+               ipsp->ips_iv_size = 0;
+#ifdef CONFIG_KLIPS_ALG
+               ipsec_alg_sa_init(ipsp);
+               ixt_e=ipsp->ips_alg_enc;
+
+               if (ixt_e == NULL) {
+                       if(printk_ratelimit()) {
+                               printk(KERN_INFO 
+                                      "ipsec_sa_init: "
+                                      "encalg=%d support not available in the kernel",
+                                      ipsp->ips_encalg);
+                       }
+                       SENDERR(ENOENT);
+               }
+
+               ipsp->ips_iv_size = ixt_e->ixt_common.ixt_support.ias_ivlen/8;
+
+               /* Create IV */
+               if (ipsp->ips_iv_size) {
+                       if((ipsp->ips_iv = (caddr_t)
+                           kmalloc(ipsp->ips_iv_size, GFP_ATOMIC)) == NULL) {
+                               SENDERR(ENOMEM);
+                       }
+                       prng_bytes(&ipsec_prng,
+                                  (char *)ipsp->ips_iv,
+                                  ipsp->ips_iv_size);
+                       ipsp->ips_iv_bits = ipsp->ips_iv_size * 8;
+               }
+               
+               if ((error=ipsec_alg_enc_key_create(ipsp)) < 0)
+                       SENDERR(-error);
+
+               if ((ixt_a=ipsp->ips_alg_auth)) {
+                       if ((error=ipsec_alg_auth_key_create(ipsp)) < 0)
+                               SENDERR(-error);
+               } else  
+#endif /* CONFIG_KLIPS_ALG */
+               
+               switch(ipsp->ips_authalg) {
+# ifdef CONFIG_KLIPS_AUTH_HMAC_MD5
+               case AH_MD5: {
+                       MD5_CTX *ictx;
+                       MD5_CTX *octx;
+
+                       if(ipsp->ips_key_bits_a != (AHMD596_KLEN * 8)) {
+                               KLIPS_PRINT(debug_pfkey,
+                                           "ipsec_sa_init: "
+                                           "incorrect authorisation key size: %d bits -- must be %d bits\n"/*octets (bytes)\n"*/,
+                                           ipsp->ips_key_bits_a,
+                                           AHMD596_KLEN * 8);
+                               SENDERR(EINVAL);
+                       }
+                       
+#  if KLIPS_DIVULGE_HMAC_KEY
+                       KLIPS_PRINT(debug_pfkey && sysctl_ipsec_debug_verbose,
+                                   "ipsec_sa_init: "
+                                   "hmac md5-96 key is 0x%08x %08x %08x %08x\n",
+                                   ntohl(*(((__u32 *)(ipsp->ips_key_a))+0)),
+                                   ntohl(*(((__u32 *)(ipsp->ips_key_a))+1)),
+                                   ntohl(*(((__u32 *)(ipsp->ips_key_a))+2)),
+                                   ntohl(*(((__u32 *)(ipsp->ips_key_a))+3)));
+#  endif /* KLIPS_DIVULGE_HMAC_KEY */
+                       ipsp->ips_auth_bits = AHMD596_ALEN * 8;
+                       
+                       /* save the pointer to the key material */
+                       akp = ipsp->ips_key_a;
+                       aks = ipsp->ips_key_a_size;
+                       
+                       KLIPS_PRINT(debug_pfkey && sysctl_ipsec_debug_verbose,
+                                   "ipsec_sa_init: "
+                                   "allocating %lu bytes for md5_ctx.\n",
+                                   (unsigned long) sizeof(struct md5_ctx));
+                       if((ipsp->ips_key_a = (caddr_t)
+                           kmalloc(sizeof(struct md5_ctx), GFP_ATOMIC)) == NULL) {
+                               ipsp->ips_key_a = akp;
+                               SENDERR(ENOMEM);
+                       }
+                       ipsp->ips_key_a_size = sizeof(struct md5_ctx);
+
+                       for (i = 0; i < DIVUP(ipsp->ips_key_bits_a, 8); i++) {
+                               kb[i] = akp[i] ^ HMAC_IPAD;
+                       }
+                       for (; i < AHMD596_BLKLEN; i++) {
+                               kb[i] = HMAC_IPAD;
+                       }
+
+                       ictx = &(((struct md5_ctx*)(ipsp->ips_key_a))->ictx);
+                       osMD5Init(ictx);
+                       osMD5Update(ictx, kb, AHMD596_BLKLEN);
+
+                       for (i = 0; i < AHMD596_BLKLEN; i++) {
+                               kb[i] ^= (HMAC_IPAD ^ HMAC_OPAD);
+                       }
+
+                       octx = &(((struct md5_ctx*)(ipsp->ips_key_a))->octx);
+                       osMD5Init(octx);
+                       osMD5Update(octx, kb, AHMD596_BLKLEN);
+                       
+#  if KLIPS_DIVULGE_HMAC_KEY
+                       KLIPS_PRINT(debug_pfkey && sysctl_ipsec_debug_verbose,
+                                   "ipsec_sa_init: "
+                                   "MD5 ictx=0x%08x %08x %08x %08x octx=0x%08x %08x %08x %08x\n",
+                                   ((__u32*)ictx)[0],
+                                   ((__u32*)ictx)[1],
+                                   ((__u32*)ictx)[2],
+                                   ((__u32*)ictx)[3],
+                                   ((__u32*)octx)[0],
+                                   ((__u32*)octx)[1],
+                                   ((__u32*)octx)[2],
+                                   ((__u32*)octx)[3] );
+#  endif /* KLIPS_DIVULGE_HMAC_KEY */
+                       /* paranoid */
+                       memset(akp, 0, aks);
+                       kfree(akp);
+                       break;
+               }
+# endif /* CONFIG_KLIPS_AUTH_HMAC_MD5 */
+# ifdef CONFIG_KLIPS_AUTH_HMAC_SHA1
+               case AH_SHA: {
+                       SHA1_CTX *ictx;
+                       SHA1_CTX *octx;
+
+                       if(ipsp->ips_key_bits_a != (AHSHA196_KLEN * 8)) {
+                               KLIPS_PRINT(debug_pfkey,
+                                           "ipsec_sa_init: "
+                                           "incorrect authorisation key size: %d bits -- must be %d bits\n"/*octets (bytes)\n"*/,
+                                           ipsp->ips_key_bits_a,
+                                           AHSHA196_KLEN * 8);
+                               SENDERR(EINVAL);
+                       }
+                       
+#  if KLIPS_DIVULGE_HMAC_KEY
+                       KLIPS_PRINT(debug_pfkey && sysctl_ipsec_debug_verbose,
+                                   "ipsec_sa_init: "
+                                   "hmac sha1-96 key is 0x%08x %08x %08x %08x\n",
+                                   ntohl(*(((__u32 *)ipsp->ips_key_a)+0)),
+                                   ntohl(*(((__u32 *)ipsp->ips_key_a)+1)),
+                                   ntohl(*(((__u32 *)ipsp->ips_key_a)+2)),
+                                   ntohl(*(((__u32 *)ipsp->ips_key_a)+3)));
+#  endif /* KLIPS_DIVULGE_HMAC_KEY */
+                       ipsp->ips_auth_bits = AHSHA196_ALEN * 8;
+                       
+                       /* save the pointer to the key material */
+                       akp = ipsp->ips_key_a;
+                       aks = ipsp->ips_key_a_size;
+
+                       KLIPS_PRINT(debug_pfkey && sysctl_ipsec_debug_verbose,
+                                   "ipsec_sa_init: "
+                                   "allocating %lu bytes for sha1_ctx.\n",
+                                   (unsigned long) sizeof(struct sha1_ctx));
+                       if((ipsp->ips_key_a = (caddr_t)
+                           kmalloc(sizeof(struct sha1_ctx), GFP_ATOMIC)) == NULL) {
+                               ipsp->ips_key_a = akp;
+                               SENDERR(ENOMEM);
+                       }
+                       ipsp->ips_key_a_size = sizeof(struct sha1_ctx);
+
+                       for (i = 0; i < DIVUP(ipsp->ips_key_bits_a, 8); i++) {
+                               kb[i] = akp[i] ^ HMAC_IPAD;
+                       }
+                       for (; i < AHMD596_BLKLEN; i++) {
+                               kb[i] = HMAC_IPAD;
+                       }
+
+                       ictx = &(((struct sha1_ctx*)(ipsp->ips_key_a))->ictx);
+                       SHA1Init(ictx);
+                       SHA1Update(ictx, kb, AHSHA196_BLKLEN);
+
+                       for (i = 0; i < AHSHA196_BLKLEN; i++) {
+                               kb[i] ^= (HMAC_IPAD ^ HMAC_OPAD);
+                       }
+
+                       octx = &((struct sha1_ctx*)(ipsp->ips_key_a))->octx;
+                       SHA1Init(octx);
+                       SHA1Update(octx, kb, AHSHA196_BLKLEN);
+                       
+#  if KLIPS_DIVULGE_HMAC_KEY
+                       KLIPS_PRINT(debug_pfkey && sysctl_ipsec_debug_verbose,
+                                   "ipsec_sa_init: "
+                                   "SHA1 ictx=0x%08x %08x %08x %08x octx=0x%08x %08x %08x %08x\n",
+                                   ((__u32*)ictx)[0],
+                                   ((__u32*)ictx)[1],
+                                   ((__u32*)ictx)[2],
+                                   ((__u32*)ictx)[3],
+                                   ((__u32*)octx)[0],
+                                   ((__u32*)octx)[1],
+                                   ((__u32*)octx)[2],
+                                   ((__u32*)octx)[3] );
+#  endif /* KLIPS_DIVULGE_HMAC_KEY */
+                       memset(akp, 0, aks);
+                       kfree(akp);
+                       break;
+               }
+# endif /* CONFIG_KLIPS_AUTH_HMAC_SHA1 */
+               case AH_NONE:
+                       break;
+               default:
+                       KLIPS_PRINT(debug_pfkey,
+                                   "ipsec_sa_init: "
+                                   "authalg=%d support not available in the kernel.\n",
+                                   ipsp->ips_authalg);
+                       SENDERR(EINVAL);
+               }
+       }
+                       break;
+#endif /* !CONFIG_KLIPS_ESP */
+#ifdef CONFIG_KLIPS_IPCOMP
+       case IPPROTO_COMP:
+               ipsp->ips_comp_adapt_tries = 0;
+               ipsp->ips_comp_adapt_skip = 0;
+               ipsp->ips_comp_ratio_cbytes = 0;
+               ipsp->ips_comp_ratio_dbytes = 0;
+               break;
+#endif /* CONFIG_KLIPS_IPCOMP */
+       default:
+               printk(KERN_ERR "KLIPS sa initialization: "
+                      "proto=%d unknown.\n",
+                      ipsp->ips_said.proto);
+               SENDERR(EINVAL);
+       }
+       
+ errlab:
+       return(error);
+}
+
+
+
+/*
+ * $Log: ipsec_sa.c,v $
+ * Revision 1.30.2.3  2007-09-05 02:56:10  paul
+ * Use the new ipsec_kversion macros by David to deal with 2.6.22 kernels.
+ * Fixes based on David McCullough patch.
+ *
+ * Revision 1.30.2.2  2006/10/06 21:39:26  paul
+ * Fix for 2.6.18+ only include linux/config.h if AUTOCONF_INCLUDED is not
+ * set. This is defined through autoconf.h which is included through the
+ * linux kernel build macros.
+ *
+ * Revision 1.30.2.1  2006/04/20 16:33:07  mcr
+ * remove all of CONFIG_KLIPS_ALG --- one can no longer build without it.
+ * Fix in-kernel module compilation. Sub-makefiles do not work.
+ *
+ * Revision 1.30  2005/05/24 01:02:35  mcr
+ *     some refactoring/simplification of situation where alg
+ *     is not found.
+ *
+ * Revision 1.29  2005/05/18 19:13:28  mcr
+ *     rename debug messages. make sure that algo not found is not
+ *     a debug message.
+ *
+ * Revision 1.28  2005/05/11 01:30:20  mcr
+ *     removed "poor-man"s OOP in favour of proper C structures.
+ *
+ * Revision 1.27  2005/04/29 05:10:22  mcr
+ *     removed from extraenous includes to make unit testing easier.
+ *
+ * Revision 1.26  2005/04/14 20:56:24  mcr
+ *     moved (pfkey_)ipsec_sa_init to ipsec_sa.c.
+ *
+ * Revision 1.25  2004/08/22 20:12:16  mcr
+ *     one more KLIPS_NAT->IPSEC_NAT.
+ *
+ * Revision 1.24  2004/07/10 19:11:18  mcr
+ *     CONFIG_IPSEC -> CONFIG_KLIPS.
+ *
+ * Revision 1.23  2004/04/06 02:49:26  mcr
+ *     pullup of algo code from alg-branch.
+ *
+ * Revision 1.22.2.1  2003/12/22 15:25:52  jjo
+ * . Merged algo-0.8.1-rc11-test1 into alg-branch
+ *
+ * Revision 1.22  2003/12/10 01:14:27  mcr
+ *     NAT-traversal patches to KLIPS.
+ *
+ * Revision 1.21  2003/10/31 02:27:55  mcr
+ *     pulled up port-selector patches and sa_id elimination.
+ *
+ * Revision 1.20.4.1  2003/10/29 01:30:41  mcr
+ *     elimited "struct sa_id".
+ *
+ * Revision 1.20  2003/02/06 01:50:34  rgb
+ * Fixed initialisation bug for first sadb hash bucket that would only manifest itself on platforms where NULL != 0.
+ *
+ * Revision 1.19  2003/01/30 02:32:22  rgb
+ *
+ * Rename SAref table macro names for clarity.
+ * Transmit error code through to caller from callee for better diagnosis of problems.
+ * Convert IPsecSAref_t from signed to unsigned to fix apparent SAref exhaustion bug.
+ *
+ * Revision 1.18  2002/10/12 23:11:53  dhr
+ *
+ * [KenB + DHR] more 64-bit cleanup
+ *
+ * Revision 1.17  2002/10/07 18:31:43  rgb
+ * Move field width sanity checks to ipsec_sa.c
+ *
+ * Revision 1.16  2002/09/20 15:41:02  rgb
+ * Re-wrote most of the SAref code to eliminate Entry pointers.
+ * Added SAref code compiler directive switch.
+ * Added a saref test function for testing macros.
+ * Switch from pfkey_alloc_ipsec_sa() to ipsec_sa_alloc().
+ * Split ipsec_sadb_cleanup from new funciton ipsec_sadb_free to avoid problem
+ * of freeing newly created structures when clearing the reftable upon startup
+ * to start from a known state.
+ * Place all ipsec sadb globals into one struct.
+ * Rework saref freelist.
+ * Added memory allocation debugging.
+ *
+ * Revision 1.15  2002/09/20 05:01:44  rgb
+ * Update copyright date.
+ *
+ * Revision 1.14  2002/08/13 19:01:25  mcr
+ *     patches from kenb to permit compilation of FreeSWAN on ia64.
+ *     des library patched to use proper DES_LONG type for ia64.
+ *
+ * Revision 1.13  2002/07/29 03:06:20  mcr
+ *     get rid of variable not used warnings.
+ *
+ * Revision 1.12  2002/07/26 08:48:31  rgb
+ * Added SA ref table code.
+ *
+ * Revision 1.11  2002/06/04 16:48:49  rgb
+ * Tidied up pointer code for processor independance.
+ *
+ * Revision 1.10  2002/05/23 07:16:17  rgb
+ * Added ipsec_sa_put() for releasing an ipsec_sa refcount.
+ * Pointer clean-up.
+ * Added refcount code.
+ * Convert "usecount" to "refcount" to remove ambiguity.
+ *
+ * Revision 1.9  2002/05/14 02:34:49  rgb
+ * Converted reference from ipsec_sa_put to ipsec_sa_add to avoid confusion
+ * with "put" usage in the kernel.
+ * Change all references to tdb, TDB or Tunnel Descriptor Block to ips,
+ * ipsec_sa or ipsec_sa.
+ * Added some preliminary refcount code.
+ *
+ * Revision 1.8  2002/04/24 07:55:32  mcr
+ *     #include patches and Makefiles for post-reorg compilation.
+ *
+ * Revision 1.7  2002/04/24 07:36:30  mcr
+ * Moved from ./klips/net/ipsec/ipsec_sa.c,v
+ *
+ * Revision 1.6  2002/04/20 00:12:25  rgb
+ * Added esp IV CBC attack fix, disabled.
+ *
+ * Revision 1.5  2002/01/29 17:17:56  mcr
+ *     moved include of ipsec_param.h to after include of linux/kernel.h
+ *     otherwise, it seems that some option that is set in ipsec_param.h
+ *     screws up something subtle in the include path to kernel.h, and
+ *     it complains on the snprintf() prototype.
+ *
+ * Revision 1.4  2002/01/29 04:00:52  mcr
+ *     more excise of kversions.h header.
+ *
+ * Revision 1.3  2002/01/29 02:13:18  mcr
+ *     introduction of ipsec_kversion.h means that include of
+ *     ipsec_param.h must preceed any decisions about what files to
+ *     include to deal with differences in kernel source.
+ *
+ * Revision 1.2  2001/11/26 09:16:15  rgb
+ * Merge MCR's ipsec_sa, eroute, proc and struct lifetime changes.
+ *
+ * Revision 1.1.2.2  2001/10/22 21:05:41  mcr
+ *     removed phony prototype for des_set_key.
+ *
+ * Revision 1.1.2.1  2001/09/25 02:24:57  mcr
+ *     struct tdb -> struct ipsec_sa.
+ *     sa(tdb) manipulation functions renamed and moved to ipsec_sa.c
+ *     ipsec_xform.c removed. header file still contains useful things.
+ *
+ *
+ *
+ * CLONED from ipsec_xform.c:
+ * Revision 1.53  2001/09/08 21:13:34  rgb
+ * Added pfkey ident extension support for ISAKMPd. (NetCelo)
+ *
+ * Revision 1.52  2001/06/14 19:35:11  rgb
+ * Update copyright date.
+ *
+ * Revision 1.51  2001/05/30 08:14:03  rgb
+ * Removed vestiges of esp-null transforms.
+ *
+ * Revision 1.50  2001/05/03 19:43:18  rgb
+ * Initialise error return variable.
+ * Update SENDERR macro.
+ * Fix sign of error return code for ipsec_tdbcleanup().
+ * Use more appropriate return code for ipsec_tdbwipe().
+ *
+ * Revision 1.49  2001/04/19 18:56:17  rgb
+ * Fixed tdb table locking comments.
+ *
+ * Revision 1.48  2001/02/27 22:24:55  rgb
+ * Re-formatting debug output (line-splitting, joining, 1arg/line).
+ * Check for satoa() return codes.
+ *
+ * Revision 1.47  2000/11/06 04:32:08  rgb
+ * Ditched spin_lock_irqsave in favour of spin_lock_bh.
+ *
+ * Revision 1.46  2000/09/20 16:21:57  rgb
+ * Cleaned up ident string alloc/free.
+ *
+ * Revision 1.45  2000/09/08 19:16:51  rgb
+ * Change references from DEBUG_IPSEC to CONFIG_IPSEC_DEBUG.
+ * Removed all references to CONFIG_IPSEC_PFKEYv2.
+ *
+ * Revision 1.44  2000/08/30 05:29:04  rgb
+ * Compiler-define out no longer used tdb_init() in ipsec_xform.c.
+ *
+ * Revision 1.43  2000/08/18 21:30:41  rgb
+ * Purged all tdb_spi, tdb_proto and tdb_dst macros.  They are unclear.
+ *
+ * Revision 1.42  2000/08/01 14:51:51  rgb
+ * Removed _all_ remaining traces of DES.
+ *
+ * Revision 1.41  2000/07/28 14:58:31  rgb
+ * Changed kfree_s to kfree, eliminating extra arg to fix 2.4.0-test5.
+ *
+ * Revision 1.40  2000/06/28 05:50:11  rgb
+ * Actually set iv_bits.
+ *
+ * Revision 1.39  2000/05/10 23:11:09  rgb
+ * Added netlink debugging output.
+ * Added a cast to quiet down the ntohl bug.
+ *
+ * Revision 1.38  2000/05/10 19:18:42  rgb
+ * Cast output of ntohl so that the broken prototype doesn't make our
+ * compile noisy.
+ *
+ * Revision 1.37  2000/03/16 14:04:59  rgb
+ * Hardwired CONFIG_IPSEC_PFKEYv2 on.
+ *
+ * Revision 1.36  2000/01/26 10:11:28  rgb
+ * Fixed spacing in error text causing run-in words.
+ *
+ * Revision 1.35  2000/01/21 06:17:16  rgb
+ * Tidied up compiler directive indentation for readability.
+ * Added ictx,octx vars for simplification.(kravietz)
+ * Added macros for HMAC padding magic numbers.(kravietz)
+ * Fixed missing key length reporting bug.
+ * Fixed bug in tdbwipe to return immediately on NULL tdbp passed in.
+ *
+ * Revision 1.34  1999/12/08 00:04:19  rgb
+ * Fixed SA direction overwriting bug for netlink users.
+ *
+ * Revision 1.33  1999/12/01 22:16:44  rgb
+ * Minor formatting changes in ESP MD5 initialisation.
+ *
+ * Revision 1.32  1999/11/25 09:06:36  rgb
+ * Fixed error return messages, should be returning negative numbers.
+ * Implemented SENDERR macro for propagating error codes.
+ * Added debug message and separate error code for algorithms not compiled
+ * in.
+ *
+ * Revision 1.31  1999/11/23 23:06:26  rgb
+ * Sort out pfkey and freeswan headers, putting them in a library path.
+ *
+ * Revision 1.30  1999/11/18 04:09:20  rgb
+ * Replaced all kernel version macros to shorter, readable form.
+ *
+ * Revision 1.29  1999/11/17 15:53:40  rgb
+ * Changed all occurrences of #include "../../../lib/freeswan.h"
+ * to #include <freeswan.h> which works due to -Ilibfreeswan in the
+ * klips/net/ipsec/Makefile.
+ *
+ * Revision 1.28  1999/10/18 20:04:01  rgb
+ * Clean-out unused cruft.
+ *
+ * Revision 1.27  1999/10/03 19:01:03  rgb
+ * Spinlock support for 2.3.xx and 2.0.xx kernels.
+ *
+ * Revision 1.26  1999/10/01 16:22:24  rgb
+ * Switch from assignment init. to functional init. of spinlocks.
+ *
+ * Revision 1.25  1999/10/01 15:44:54  rgb
+ * Move spinlock header include to 2.1> scope.
+ *
+ * Revision 1.24  1999/10/01 00:03:46  rgb
+ * Added tdb structure locking.
+ * Minor formatting changes.
+ * Add function to initialize tdb hash table.
+ *
+ * Revision 1.23  1999/05/25 22:42:12  rgb
+ * Add deltdbchain() debugging.
+ *
+ * Revision 1.22  1999/05/25 21:24:31  rgb
+ * Add debugging statements to deltdbchain().
+ *
+ * Revision 1.21  1999/05/25 03:51:48  rgb
+ * Refix error return code.
+ *
+ * Revision 1.20  1999/05/25 03:34:07  rgb
+ * Fix error return for flush.
+ *
+ * Revision 1.19  1999/05/09 03:25:37  rgb
+ * Fix bug introduced by 2.2 quick-and-dirty patch.
+ *
+ * Revision 1.18  1999/05/05 22:02:32  rgb
+ * Add a quick and dirty port to 2.2 kernels by Marc Boucher <marc@mbsi.ca>.
+ *
+ * Revision 1.17  1999/04/29 15:20:16  rgb
+ * Change gettdb parameter to a pointer to reduce stack loading and
+ * facilitate parameter sanity checking.
+ * Add sanity checking for null pointer arguments.
+ * Add debugging instrumentation.
+ * Add function deltdbchain() which will take care of unlinking,
+ * zeroing and deleting a chain of tdbs.
+ * Add a parameter to tdbcleanup to be able to delete a class of SAs.
+ * tdbwipe now actually zeroes the tdb as well as any of its pointed
+ * structures.
+ *
+ * Revision 1.16  1999/04/16 15:36:29  rgb
+ * Fix cut-and-paste error causing a memory leak in IPIP TDB freeing.
+ *
+ * Revision 1.15  1999/04/11 00:29:01  henry
+ * GPL boilerplate
+ *
+ * Revision 1.14  1999/04/06 04:54:28  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.13  1999/02/19 18:23:01  rgb
+ * Nix debug off compile warning.
+ *
+ * Revision 1.12  1999/02/17 16:52:16  rgb
+ * Consolidate satoa()s for space and speed efficiency.
+ * Convert DEBUG_IPSEC to KLIPS_PRINT
+ * Clean out unused cruft.
+ * Ditch NET_IPIP dependancy.
+ * Loop for 3des key setting.
+ *
+ * Revision 1.11  1999/01/26 02:09:05  rgb
+ * Remove ah/esp/IPIP switching on include files.
+ * Removed CONFIG_IPSEC_ALGO_SWITCH macro.
+ * Removed dead code.
+ * Clean up debug code when switched off.
+ * Remove references to INET_GET_PROTOCOL.
+ * Added code exclusion macros to reduce code from unused algorithms.
+ *
+ * Revision 1.10  1999/01/22 06:28:55  rgb
+ * Cruft clean-out.
+ * Put random IV generation in kernel.
+ * Added algorithm switch code.
+ * Enhanced debugging.
+ * 64-bit clean-up.
+ *
+ * Revision 1.9  1998/11/30 13:22:55  rgb
+ * Rationalised all the klips kernel file headers.  They are much shorter
+ * now and won't conflict under RH5.2.
+ *
+ * Revision 1.8  1998/11/25 04:59:06  rgb
+ * Add conditionals for no IPIP tunnel code.
+ * Delete commented out code.
+ *
+ * Revision 1.7  1998/10/31 06:50:41  rgb
+ * Convert xform ASCII names to no spaces.
+ * Fixed up comments in #endif directives.
+ *
+ * Revision 1.6  1998/10/19 14:44:28  rgb
+ * Added inclusion of freeswan.h.
+ * sa_id structure implemented and used: now includes protocol.
+ *
+ * Revision 1.5  1998/10/09 04:32:19  rgb
+ * Added 'klips_debug' prefix to all klips printk debug statements.
+ *
+ * Revision 1.4  1998/08/12 00:11:31  rgb
+ * Added new xform functions to the xform table.
+ * Fixed minor debug output spelling error.
+ *
+ * Revision 1.3  1998/07/09 17:45:31  rgb
+ * Clarify algorithm not available message.
+ *
+ * Revision 1.2  1998/06/23 03:00:51  rgb
+ * Check for presence of IPIP protocol if it is setup one way (we don't
+ * know what has been set up the other way and can only assume it will be
+ * symmetrical with the exception of keys).
+ *
+ * Revision 1.1  1998/06/18 21:27:51  henry
+ * move sources from klips/src to klips/net/ipsec, to keep stupid
+ * kernel-build scripts happier in the presence of symlinks
+ *
+ * Revision 1.3  1998/06/11 05:54:59  rgb
+ * Added transform version string pointer to xformsw initialisations.
+ *
+ * Revision 1.2  1998/04/21 21:28:57  rgb
+ * Rearrange debug switches to change on the fly debug output from user
+ * space.  Only kernel changes checked in at this time.  radij.c was also
+ * changed to temporarily remove buggy debugging code in rj_delete causing
+ * an OOPS and hence, netlink device open errors.
+ *
+ * Revision 1.1  1998/04/09 03:06:13  henry
+ * sources moved up from linux/net/ipsec
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:02  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.5  1997/06/03 04:24:48  ji
+ * Added ESP-3DES-MD5-96
+ *
+ * Revision 0.4  1997/01/15 01:28:15  ji
+ * Added new transforms.
+ *
+ * Revision 0.3  1996/11/20 14:39:04  ji
+ * Minor cleanups.
+ * Rationalized debugging code.
+ *
+ * Revision 0.2  1996/11/02 00:18:33  ji
+ * First limited release.
+ *
+ *
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/ipsec_sha1.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,219 @@
+/*
+ * RCSID $Id: ipsec_sha1.c,v 1.9 2004-04-06 02:49:26 mcr Exp $
+ */
+
+/*
+ * The rest of the code is derived from sha1.c by Steve Reid, which is
+ * public domain.
+ * Minor cosmetic changes to accomodate it in the Linux kernel by ji.
+ */
+
+#include <asm/byteorder.h>
+#include <linux/string.h>
+
+#include "openswan/ipsec_sha1.h"
+
+#if defined(rol)
+#undef rol
+#endif
+
+#define SHA1HANDSOFF
+
+#define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits))))
+
+/* blk0() and blk() perform the initial expand. */
+/* I got the idea of expanding during the round function from SSLeay */
+#ifdef __LITTLE_ENDIAN
+#define blk0(i) (block->l[i] = (rol(block->l[i],24)&0xFF00FF00) \
+    |(rol(block->l[i],8)&0x00FF00FF))
+#else
+#define blk0(i) block->l[i]
+#endif
+#define blk(i) (block->l[i&15] = rol(block->l[(i+13)&15]^block->l[(i+8)&15] \
+    ^block->l[(i+2)&15]^block->l[i&15],1))
+
+/* (R0+R1), R2, R3, R4 are the different operations used in SHA1 */
+#define R0(v,w,x,y,z,i) z+=((w&(x^y))^y)+blk0(i)+0x5A827999+rol(v,5);w=rol(w,30);
+#define R1(v,w,x,y,z,i) z+=((w&(x^y))^y)+blk(i)+0x5A827999+rol(v,5);w=rol(w,30);
+#define R2(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0x6ED9EBA1+rol(v,5);w=rol(w,30);
+#define R3(v,w,x,y,z,i) z+=(((w|x)&y)|(w&x))+blk(i)+0x8F1BBCDC+rol(v,5);w=rol(w,30);
+#define R4(v,w,x,y,z,i) z+=(w^x^y)+blk(i)+0xCA62C1D6+rol(v,5);w=rol(w,30);
+
+
+/* Hash a single 512-bit block. This is the core of the algorithm. */
+
+void SHA1Transform(__u32 state[5], __u8 buffer[64])
+{
+__u32 a, b, c, d, e;
+typedef union {
+    unsigned char c[64];
+    __u32 l[16];
+} CHAR64LONG16;
+CHAR64LONG16* block;
+#ifdef SHA1HANDSOFF
+static unsigned char workspace[64];
+    block = (CHAR64LONG16*)workspace;
+    memcpy(block, buffer, 64);
+#else
+    block = (CHAR64LONG16*)buffer;
+#endif
+    /* Copy context->state[] to working vars */
+    a = state[0];
+    b = state[1];
+    c = state[2];
+    d = state[3];
+    e = state[4];
+    /* 4 rounds of 20 operations each. Loop unrolled. */
+    R0(a,b,c,d,e, 0); R0(e,a,b,c,d, 1); R0(d,e,a,b,c, 2); R0(c,d,e,a,b, 3);
+    R0(b,c,d,e,a, 4); R0(a,b,c,d,e, 5); R0(e,a,b,c,d, 6); R0(d,e,a,b,c, 7);
+    R0(c,d,e,a,b, 8); R0(b,c,d,e,a, 9); R0(a,b,c,d,e,10); R0(e,a,b,c,d,11);
+    R0(d,e,a,b,c,12); R0(c,d,e,a,b,13); R0(b,c,d,e,a,14); R0(a,b,c,d,e,15);
+    R1(e,a,b,c,d,16); R1(d,e,a,b,c,17); R1(c,d,e,a,b,18); R1(b,c,d,e,a,19);
+    R2(a,b,c,d,e,20); R2(e,a,b,c,d,21); R2(d,e,a,b,c,22); R2(c,d,e,a,b,23);
+    R2(b,c,d,e,a,24); R2(a,b,c,d,e,25); R2(e,a,b,c,d,26); R2(d,e,a,b,c,27);
+    R2(c,d,e,a,b,28); R2(b,c,d,e,a,29); R2(a,b,c,d,e,30); R2(e,a,b,c,d,31);
+    R2(d,e,a,b,c,32); R2(c,d,e,a,b,33); R2(b,c,d,e,a,34); R2(a,b,c,d,e,35);
+    R2(e,a,b,c,d,36); R2(d,e,a,b,c,37); R2(c,d,e,a,b,38); R2(b,c,d,e,a,39);
+    R3(a,b,c,d,e,40); R3(e,a,b,c,d,41); R3(d,e,a,b,c,42); R3(c,d,e,a,b,43);
+    R3(b,c,d,e,a,44); R3(a,b,c,d,e,45); R3(e,a,b,c,d,46); R3(d,e,a,b,c,47);
+    R3(c,d,e,a,b,48); R3(b,c,d,e,a,49); R3(a,b,c,d,e,50); R3(e,a,b,c,d,51);
+    R3(d,e,a,b,c,52); R3(c,d,e,a,b,53); R3(b,c,d,e,a,54); R3(a,b,c,d,e,55);
+    R3(e,a,b,c,d,56); R3(d,e,a,b,c,57); R3(c,d,e,a,b,58); R3(b,c,d,e,a,59);
+    R4(a,b,c,d,e,60); R4(e,a,b,c,d,61); R4(d,e,a,b,c,62); R4(c,d,e,a,b,63);
+    R4(b,c,d,e,a,64); R4(a,b,c,d,e,65); R4(e,a,b,c,d,66); R4(d,e,a,b,c,67);
+    R4(c,d,e,a,b,68); R4(b,c,d,e,a,69); R4(a,b,c,d,e,70); R4(e,a,b,c,d,71);
+    R4(d,e,a,b,c,72); R4(c,d,e,a,b,73); R4(b,c,d,e,a,74); R4(a,b,c,d,e,75);
+    R4(e,a,b,c,d,76); R4(d,e,a,b,c,77); R4(c,d,e,a,b,78); R4(b,c,d,e,a,79);
+    /* Add the working vars back into context.state[] */
+    state[0] += a;
+    state[1] += b;
+    state[2] += c;
+    state[3] += d;
+    state[4] += e;
+    /* Wipe variables */
+    a = b = c = d = e = 0;
+}
+
+
+/* SHA1Init - Initialize new context */
+
+void SHA1Init(void *vcontext)
+{
+    SHA1_CTX* context = vcontext;
+
+    /* SHA1 initialization constants */
+    context->state[0] = 0x67452301;
+    context->state[1] = 0xEFCDAB89;
+    context->state[2] = 0x98BADCFE;
+    context->state[3] = 0x10325476;
+    context->state[4] = 0xC3D2E1F0;
+    context->count[0] = context->count[1] = 0;
+}
+
+
+/* Run your data through this. */
+
+void SHA1Update(void *vcontext, unsigned char* data, __u32 len)
+{
+    SHA1_CTX* context = vcontext;
+    __u32 i, j;
+
+    j = context->count[0];
+    if ((context->count[0] += len << 3) < j)
+       context->count[1]++;
+    context->count[1] += (len>>29);
+    j = (j >> 3) & 63;
+    if ((j + len) > 63) {
+        memcpy(&context->buffer[j], data, (i = 64-j));
+        SHA1Transform(context->state, context->buffer);
+        for ( ; i + 63 < len; i += 64) {
+            SHA1Transform(context->state, &data[i]);
+        }
+        j = 0;
+    }
+    else i = 0;
+    memcpy(&context->buffer[j], &data[i], len - i);
+}
+
+
+/* Add padding and return the message digest. */
+
+void SHA1Final(unsigned char digest[20], void *vcontext)
+{
+  __u32 i, j;
+  unsigned char finalcount[8];
+  SHA1_CTX* context = vcontext;
+    
+    for (i = 0; i < 8; i++) {
+        finalcount[i] = (unsigned char)((context->count[(i >= 4 ? 0 : 1)]
+         >> ((3-(i & 3)) * 8) ) & 255);  /* Endian independent */
+    }
+    SHA1Update(context, (unsigned char *)"\200", 1);
+    while ((context->count[0] & 504) != 448) {
+        SHA1Update(context, (unsigned char *)"\0", 1);
+    }
+    SHA1Update(context, finalcount, 8);  /* Should cause a SHA1Transform() */
+    for (i = 0; i < 20; i++) {
+        digest[i] = (unsigned char)
+         ((context->state[i>>2] >> ((3-(i & 3)) * 8) ) & 255);
+    }
+    /* Wipe variables */
+    i = j = 0;
+    memset(context->buffer, 0, 64);
+    memset(context->state, 0, 20);
+    memset(context->count, 0, 8);
+    memset(&finalcount, 0, 8);
+#ifdef SHA1HANDSOFF  /* make SHA1Transform overwrite its own static vars */
+    SHA1Transform(context->state, context->buffer);
+#endif
+}
+
+
+/*
+ * $Log: ipsec_sha1.c,v $
+ * Revision 1.9  2004-04-06 02:49:26  mcr
+ *     pullup of algo code from alg-branch.
+ *
+ * Revision 1.8  2002/09/10 01:45:14  mcr
+ *     changed type of MD5_CTX and SHA1_CTX to void * so that
+ *     the function prototypes would match, and could be placed
+ *     into a pointer to a function.
+ *
+ * Revision 1.7  2002/04/24 07:55:32  mcr
+ *     #include patches and Makefiles for post-reorg compilation.
+ *
+ * Revision 1.6  2002/04/24 07:36:30  mcr
+ * Moved from ./klips/net/ipsec/ipsec_sha1.c,v
+ *
+ * Revision 1.5  1999/12/13 13:59:13  rgb
+ * Quick fix to argument size to Update bugs.
+ *
+ * Revision 1.4  1999/04/11 00:29:00  henry
+ * GPL boilerplate
+ *
+ * Revision 1.3  1999/04/06 04:54:27  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.2  1999/01/22 06:55:50  rgb
+ * 64-bit clean-up.
+ *
+ * Revision 1.1  1998/06/18 21:27:50  henry
+ * move sources from klips/src to klips/net/ipsec, to keep stupid
+ * kernel-build scripts happier in the presence of symlinks
+ *
+ * Revision 1.2  1998/04/23 20:54:04  rgb
+ * Fixed md5 and sha1 include file nesting issues, to be cleaned up when
+ * verified.
+ *
+ * Revision 1.1  1998/04/09 03:06:11  henry
+ * sources moved up from linux/net/ipsec
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:05  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.4  1997/01/15 01:28:15  ji
+ * New transform
+ *
+ *
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/ipsec_snprintf.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,135 @@
+/*
+ * @(#) ipsec_snprintf() function
+ *
+ * Copyright (C) 1998, 1999, 2000, 2001  Richard Guy Briggs <rgb@freeswan.org>
+ *                                 2001  Michael Richardson <mcr@freeswan.org>
+ * Copyright (C) 2005 Michael Richardson <mcr@xelerance.com>
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * Split out from ipsec_proc.c.
+ */
+
+#ifndef AUTOCONF_INCLUDED
+#include <linux/config.h>
+#endif
+#include <linux/version.h>
+#define __NO_VERSION__
+#include <linux/module.h>
+#include <linux/kernel.h> /* printk() */
+
+#include "openswan/ipsec_kversion.h"
+#include "openswan/ipsec_param.h"
+
+#include <net/ip.h>
+
+#include "openswan/radij.h"
+
+#include "openswan/ipsec_life.h"
+#include "openswan/ipsec_stats.h"
+#include "openswan/ipsec_sa.h"
+
+#include "openswan/ipsec_encap.h"
+#include "openswan/ipsec_radij.h"
+#include "openswan/ipsec_xform.h"
+#include "openswan/ipsec_tunnel.h"
+#include "openswan/ipsec_xmit.h"
+
+#include "openswan/ipsec_rcv.h"
+#include "openswan/ipsec_ah.h"
+#include "openswan/ipsec_esp.h"
+#include "openswan/ipsec_kern24.h"
+
+#ifdef CONFIG_KLIPS_IPCOMP
+#include "openswan/ipcomp.h"
+#endif /* CONFIG_KLIPS_IPCOMP */
+
+#include "openswan/ipsec_proto.h"
+
+#include <pfkeyv2.h>
+#include <pfkey.h>
+
+/* ipsec_snprintf: like snprintf except
+ * - size is signed and a negative value is treated as if it were 0
+ * - the returned result is never negative --
+ *   an error generates a "?" or null output (depending on space).
+ *   (Our callers are too lazy to check for an error return.)
+ * 
+ * @param buf String buffer
+ * @param size Size of the string
+ * @param fmt printf string
+ * @param ... Variables to be displayed in fmt
+ * @return int Return code
+ */
+int ipsec_snprintf(char *buf, ssize_t size, const char *fmt, ...)
+{
+       va_list args;
+       int i;
+       size_t possize = size < 0? 0 : size;
+       va_start(args, fmt);
+       i = vsnprintf(buf,possize,fmt,args);
+       va_end(args);
+       if (i < 0) {
+           /* create empty output in place of error */
+           i = 0;
+           if (size > 0) {
+               *buf = '\0';
+           }
+       }
+       return i;
+}
+
+
+void ipsec_dmp_block(char *s, caddr_t bb, int len)
+{
+       int i;
+       unsigned char *b = bb;
+  
+       printk(KERN_INFO "klips_dmp: "
+              "at %s, len=%d:\n", s, len);
+       
+       for(i = 0; i < len; i++ /*, c++*/) {
+               if(!(i % 16)) {
+                       printk(KERN_INFO
+                              "klips_debug:   @%03x:",
+                              i);
+               }
+               printk(" %02x", b[i]);
+               if(!((i + 1) % 16)) {
+                       printk("\n");
+               }
+       }
+       if(i % 16) {
+               printk("\n");
+       }
+}
+               
+/*
+ *
+ * $Log: ipsec_snprintf.c,v $
+ * Revision 1.3.2.1  2006-10-06 21:39:26  paul
+ * Fix for 2.6.18+ only include linux/config.h if AUTOCONF_INCLUDED is not
+ * set. This is defined through autoconf.h which is included through the
+ * linux kernel build macros.
+ *
+ * Revision 1.3  2005/04/29 05:10:22  mcr
+ *     removed from extraenous includes to make unit testing easier.
+ *
+ * Revision 1.2  2005/04/15 00:32:01  mcr
+ *     added ipsec_dmp_block routine.
+ *
+ *
+ * Local Variables:
+ * c-file-style: "linux"
+ * End:
+ *
+ */
+
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/ipsec_tunnel.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,2893 @@
+/*
+ * IPSEC Tunneling code. Heavily based on drivers/net/new_tunnel.c
+ * Copyright (C) 1996, 1997  John Ioannidis.
+ * Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+char ipsec_tunnel_c_version[] = "RCSID $Id: ipsec_tunnel.c,v 1.232.2.7 2007-09-18 18:26:18 paul Exp $";
+
+#define __NO_VERSION__
+#include <linux/module.h>
+#ifndef AUTOCONF_INCLUDED
+#include <linux/config.h>
+#endif /* for CONFIG_IP_FORWARD */
+#include <linux/version.h>
+#include <linux/kernel.h> /* printk() */
+
+#include "openswan/ipsec_param.h"
+
+#ifdef MALLOC_SLAB
+# include <linux/slab.h> /* kmalloc() */
+#else /* MALLOC_SLAB */
+# include <linux/malloc.h> /* kmalloc() */
+#endif /* MALLOC_SLAB */
+#include <linux/errno.h>  /* error codes */
+#include <linux/types.h>  /* size_t */
+#include <linux/interrupt.h> /* mark_bh */
+
+#include <net/tcp.h>
+#include <net/udp.h>
+#include <linux/skbuff.h>
+
+#include <linux/netdevice.h>   /* struct device, struct net_device_stats, dev_queue_xmit() and other headers */
+#include <linux/etherdevice.h> /* eth_type_trans */
+#include <linux/ip.h>          /* struct iphdr */
+#include <net/arp.h>
+#include <linux/skbuff.h>
+
+#include <openswan.h>
+
+#ifdef NET_21
+# include <linux/in6.h>
+# define ip_chk_addr inet_addr_type
+# define IS_MYADDR RTN_LOCAL
+# include <net/dst.h>
+# undef dev_kfree_skb
+# define dev_kfree_skb(a,b) kfree_skb(a)
+# define PHYSDEV_TYPE
+#endif /* NET_21 */
+
+#include <net/icmp.h>          /* icmp_send() */
+#include <net/ip.h>
+#ifdef NETDEV_23
+# include <linux/netfilter_ipv4.h>
+#endif /* NETDEV_23 */
+
+#include <linux/if_arp.h>
+#include <net/arp.h>
+
+#include "openswan/ipsec_kversion.h"
+#include "openswan/radij.h"
+#include "openswan/ipsec_life.h"
+#include "openswan/ipsec_xform.h"
+#include "openswan/ipsec_eroute.h"
+#include "openswan/ipsec_encap.h"
+#include "openswan/ipsec_radij.h"
+#include "openswan/ipsec_sa.h"
+#include "openswan/ipsec_tunnel.h"
+#include "openswan/ipsec_xmit.h"
+#include "openswan/ipsec_ipe4.h"
+#include "openswan/ipsec_ah.h"
+#include "openswan/ipsec_esp.h"
+#include "openswan/ipsec_kern24.h"
+
+#include <pfkeyv2.h>
+#include <pfkey.h>
+
+#include "openswan/ipsec_proto.h"
+#ifdef CONFIG_IPSEC_NAT_TRAVERSAL
+#include <linux/udp.h>
+#endif
+
+static __u32 zeroes[64];
+
+#ifdef CONFIG_KLIPS_DEBUG
+int debug_tunnel = 0;
+#endif /* CONFIG_KLIPS_DEBUG */
+
+DEBUG_NO_STATIC int
+ipsec_tunnel_open(struct net_device *dev)
+{
+       struct ipsecpriv *prv = dev->priv;
+       
+       /*
+        * Can't open until attached.
+        */
+
+       KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                   "klips_debug:ipsec_tunnel_open: "
+                   "dev = %s, prv->dev = %s\n",
+                   dev->name, prv->dev?prv->dev->name:"NONE");
+
+       if (prv->dev == NULL)
+               return -ENODEV;
+       
+       KLIPS_INC_USE;
+       return 0;
+}
+
+DEBUG_NO_STATIC int
+ipsec_tunnel_close(struct net_device *dev)
+{
+       KLIPS_DEC_USE;
+       return 0;
+}
+
+#ifdef NETDEV_23
+static inline int ipsec_tunnel_xmit2(struct sk_buff *skb)
+{
+#ifdef NETDEV_25       /* 2.6 kernels */
+       return dst_output(skb);
+#else
+       return ip_send(skb);
+#endif
+}
+#endif /* NETDEV_23 */
+
+enum ipsec_xmit_value
+ipsec_tunnel_strip_hard_header(struct ipsec_xmit_state *ixs)
+{
+       /* ixs->physdev->hard_header_len is unreliable and should not be used */
+        ixs->hard_header_len = (unsigned char *)(ixs->iph) - ixs->skb->data;
+
+       if(ixs->hard_header_len < 0) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                           "klips_error:ipsec_xmit_strip_hard_header: "
+                           "Negative hard_header_len (%d)?!\n", ixs->hard_header_len);
+               ixs->stats->tx_dropped++;
+               return IPSEC_XMIT_BADHHLEN;
+       }
+
+       /* while ixs->physdev->hard_header_len is unreliable and
+        * should not be trusted, it accurate and required for ATM, GRE and
+        * some other interfaces to work. Thanks to Willy Tarreau 
+        * <willy@w.ods.org>.
+        */
+       if(ixs->hard_header_len == 0) { /* no hard header present */
+               ixs->hard_header_stripped = 1;
+               ixs->hard_header_len = ixs->physdev->hard_header_len;
+       }
+
+#ifdef CONFIG_KLIPS_DEBUG
+       if (debug_tunnel & DB_TN_XMIT) {
+               int i;
+               char c;
+               
+               printk(KERN_INFO "klips_debug:ipsec_xmit_strip_hard_header: "
+                      ">>> skb->len=%ld hard_header_len:%d",
+                      (unsigned long int)ixs->skb->len, ixs->hard_header_len);
+               c = ' ';
+               for (i=0; i < ixs->hard_header_len; i++) {
+                       printk("%c%02x", c, ixs->skb->data[i]);
+                       c = ':';
+               }
+               printk(" \n");
+       }
+#endif /* CONFIG_KLIPS_DEBUG */
+
+       KLIPS_IP_PRINT(debug_tunnel & DB_TN_XMIT, ixs->iph);
+
+       KLIPS_PRINT(debug_tunnel & DB_TN_CROUT,
+                   "klips_debug:ipsec_xmit_strip_hard_header: "
+                   "Original head,tailroom: %d,%d\n",
+                   skb_headroom(ixs->skb), skb_tailroom(ixs->skb));
+
+       return IPSEC_XMIT_OK;
+}
+
+enum ipsec_xmit_value
+ipsec_tunnel_SAlookup(struct ipsec_xmit_state *ixs)
+{
+       unsigned int bypass;
+
+       bypass = FALSE;
+
+       /*
+        * First things first -- look us up in the erouting tables.
+        */
+       ixs->matcher.sen_len = sizeof (struct sockaddr_encap);
+       ixs->matcher.sen_family = AF_ENCAP;
+       ixs->matcher.sen_type = SENT_IP4;
+       ixs->matcher.sen_ip_src.s_addr = ixs->iph->saddr;
+       ixs->matcher.sen_ip_dst.s_addr = ixs->iph->daddr;
+       ixs->matcher.sen_proto = ixs->iph->protocol;
+       ipsec_extract_ports(ixs->iph, &ixs->matcher);
+
+       /*
+        * The spinlock is to prevent any other process from accessing or deleting
+        * the eroute while we are using and updating it.
+        */
+       spin_lock(&eroute_lock);
+       
+       ixs->eroute = ipsec_findroute(&ixs->matcher);
+
+       if(ixs->iph->protocol == IPPROTO_UDP) {
+               struct udphdr *t = NULL;
+
+               KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                           "klips_debug:udp port check: "
+                           "fragoff: %d len: %d>%ld \n",
+                           ntohs(ixs->iph->frag_off) & IP_OFFSET,
+                           (ixs->skb->len - ixs->hard_header_len),
+                            (unsigned long int) ((ixs->iph->ihl << 2) + sizeof(struct udphdr)));
+               
+               if((ntohs(ixs->iph->frag_off) & IP_OFFSET) == 0 &&
+                  ((ixs->skb->len - ixs->hard_header_len) >=
+                   ((ixs->iph->ihl << 2) + sizeof(struct udphdr))))
+               {
+                       t =((struct udphdr*)((caddr_t)ixs->iph+(ixs->iph->ihl<<2)));
+                       KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                                   "klips_debug:udp port in packet: "
+                                   "port %d -> %d\n",
+                                   ntohs(t->source), ntohs(t->dest));
+               }
+
+               ixs->sport=0; ixs->dport=0;
+
+               if(ixs->skb->sk) {
+#ifdef NET_26
+#ifdef HAVE_INET_SK_SPORT
+                       ixs->sport = ntohs(inet_sk(ixs->skb->sk)->sport);
+                       ixs->dport = ntohs(inet_sk(ixs->skb->sk)->dport);
+#else
+                       struct udp_sock *us;
+                       
+                       us = (struct udp_sock *)ixs->skb->sk;
+
+                       ixs->sport = ntohs(us->inet.sport);
+                       ixs->dport = ntohs(us->inet.dport);
+#endif
+#else
+                       ixs->sport = ntohs(ixs->skb->sk->sport);
+                       ixs->dport = ntohs(ixs->skb->sk->dport);
+#endif
+
+               } 
+
+               if(t != NULL) {
+                       if(ixs->sport == 0) {
+                               ixs->sport = ntohs(t->source);
+                       }
+                       if(ixs->dport == 0) {
+                               ixs->dport = ntohs(t->dest);
+                       }
+               }
+       }
+
+       /*
+        * practically identical to above, but let's be careful about
+        * tcp vs udp headers
+        */
+       if(ixs->iph->protocol == IPPROTO_TCP) {
+               struct tcphdr *t = NULL;
+
+               if((ntohs(ixs->iph->frag_off) & IP_OFFSET) == 0 &&
+                  ((ixs->skb->len - ixs->hard_header_len) >=
+                   ((ixs->iph->ihl << 2) + sizeof(struct tcphdr)))) {
+                       t =((struct tcphdr*)((caddr_t)ixs->iph+(ixs->iph->ihl<<2)));
+               }
+
+               ixs->sport=0; ixs->dport=0;
+
+               if(ixs->skb->sk) {
+#ifdef NET_26
+#ifdef HAVE_INET_SK_SPORT
+                       ixs->sport = ntohs(inet_sk(ixs->skb->sk)->sport);
+                       ixs->dport = ntohs(inet_sk(ixs->skb->sk)->dport);
+#else
+                       struct tcp_tw_bucket *tw;
+
+                       tw = (struct tcp_tw_bucket *)ixs->skb->sk;
+
+                       ixs->sport = ntohs(tw->tw_sport);
+                       ixs->dport = ntohs(tw->tw_dport);
+#endif
+#else
+                       ixs->sport = ntohs(ixs->skb->sk->sport);
+                       ixs->dport = ntohs(ixs->skb->sk->dport);
+#endif
+               } 
+
+               if(t != NULL) {
+                       if(ixs->sport == 0) {
+                               ixs->sport = ntohs(t->source);
+                       }
+                       if(ixs->dport == 0) {
+                               ixs->dport = ntohs(t->dest);
+                       }
+               }
+       }
+       
+       /* default to a %drop eroute */
+       ixs->outgoing_said.proto = IPPROTO_INT;
+       ixs->outgoing_said.spi = htonl(SPI_DROP);
+       ixs->outgoing_said.dst.u.v4.sin_addr.s_addr = INADDR_ANY;
+       KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                   "klips_debug:ipsec_xmit_SAlookup: "
+                   "checking for local udp/500 IKE packet "
+                   "saddr=%x, er=0p%p, daddr=%x, er_dst=%x, proto=%d sport=%d dport=%d\n",
+                   ntohl((unsigned int)ixs->iph->saddr),
+                   ixs->eroute,
+                   ntohl((unsigned int)ixs->iph->daddr),
+                   ixs->eroute ? ntohl((unsigned int)ixs->eroute->er_said.dst.u.v4.sin_addr.s_addr) : 0,
+                   ixs->iph->protocol,
+                   ixs->sport,
+                   ixs->dport); 
+
+       /*
+        * cheat for now...are we udp/500? If so, let it through
+        * without interference since it is most likely an IKE packet.
+        */
+
+       if (ip_chk_addr((unsigned long)ixs->iph->saddr) == IS_MYADDR
+           && (ixs->eroute==NULL
+               || ixs->iph->daddr == ixs->eroute->er_said.dst.u.v4.sin_addr.s_addr
+               || INADDR_ANY == ixs->eroute->er_said.dst.u.v4.sin_addr.s_addr)
+           && (ixs->iph->protocol == IPPROTO_UDP &&
+               (ixs->sport == 500 || ixs->sport == 4500))) {
+               /* Whatever the eroute, this is an IKE message 
+                * from us (i.e. not being forwarded).
+                * Furthermore, if there is a tunnel eroute,
+                * the destination is the peer for this eroute.
+                * So %pass the packet: modify the default %drop.
+                */
+
+               ixs->outgoing_said.spi = htonl(SPI_PASS);
+               if(!(ixs->skb->sk) && ((ntohs(ixs->iph->frag_off) & IP_MF) != 0)) {
+                       KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                                   "klips_debug:ipsec_xmit_SAlookup: "
+                                   "local UDP/500 (probably IKE) passthrough: base fragment, rest of fragments will probably get filtered.\n");
+               }
+               bypass = TRUE;
+       }
+
+#ifdef KLIPS_EXCEPT_DNS53
+       /*
+        *
+        * if we are udp/53 or tcp/53, also let it through a %trap or %hold,
+        * since it is DNS, but *also* follow the %trap.
+        * 
+        * we do not do this for tunnels, only %trap's and %hold's.
+        *
+        */
+
+       if (ip_chk_addr((unsigned long)ixs->iph->saddr) == IS_MYADDR
+           && (ixs->eroute==NULL
+               || ixs->iph->daddr == ixs->eroute->er_said.dst.u.v4.sin_addr.s_addr
+               || INADDR_ANY == ixs->eroute->er_said.dst.u.v4.sin_addr.s_addr)
+           && ((ixs->iph->protocol == IPPROTO_UDP
+                || ixs->iph->protocol == IPPROTO_TCP)
+               && ixs->dport == 53)) {
+               
+               KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                           "klips_debug:ipsec_xmit_SAlookup: "
+                           "possible DNS packet\n");
+
+               if(ixs->eroute)
+               {
+                       if(ixs->eroute->er_said.spi == htonl(SPI_TRAP)
+                          || ixs->eroute->er_said.spi == htonl(SPI_HOLD))
+                       {
+                               ixs->outgoing_said.spi = htonl(SPI_PASSTRAP);
+                               bypass = TRUE;
+                       }
+               }
+               else
+               {
+                       ixs->outgoing_said.spi = htonl(SPI_PASSTRAP);
+                       bypass = TRUE;
+               }
+                               
+               KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                           "klips_debug:ipsec_xmit_SAlookup: "
+                           "bypass = %d\n", bypass);
+
+               if(bypass
+                  && !(ixs->skb->sk)
+                  && ((ntohs(ixs->iph->frag_off) & IP_MF) != 0))
+               {
+                       KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                                   "klips_debug:ipsec_xmit_SAlookup: "
+                                   "local port 53 (probably DNS) passthrough:"
+                                   "base fragment, rest of fragments will "
+                                   "probably get filtered.\n");
+               }
+       }
+#endif
+
+       if (bypass==FALSE && ixs->eroute) {
+               ixs->eroute->er_count++;
+               ixs->eroute->er_lasttime = jiffies/HZ;
+               if(ixs->eroute->er_said.proto==IPPROTO_INT
+                  && ixs->eroute->er_said.spi==htonl(SPI_HOLD))
+               {
+                       KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                                   "klips_debug:ipsec_xmit_SAlookup: "
+                                   "shunt SA of HOLD: skb stored in HOLD.\n");
+                       if(ixs->eroute->er_last != NULL) {
+                               kfree_skb(ixs->eroute->er_last);
+                       }
+                       ixs->eroute->er_last = ixs->skb;
+                       ixs->skb = NULL;
+                       ixs->stats->tx_dropped++;
+                       spin_unlock(&eroute_lock);
+                       return IPSEC_XMIT_STOLEN;
+               }
+               ixs->outgoing_said = ixs->eroute->er_said;
+               ixs->eroute_pid = ixs->eroute->er_pid;
+
+               /* Copy of the ident for the TRAP/TRAPSUBNET eroutes */
+               if(ixs->outgoing_said.proto==IPPROTO_INT
+                  && (ixs->outgoing_said.spi==htonl(SPI_TRAP)
+                      || (ixs->outgoing_said.spi==htonl(SPI_TRAPSUBNET)))) {
+                       int len;
+                       
+                       ixs->ips.ips_ident_s.type = ixs->eroute->er_ident_s.type;
+                       ixs->ips.ips_ident_s.id = ixs->eroute->er_ident_s.id;
+                       ixs->ips.ips_ident_s.len = ixs->eroute->er_ident_s.len;
+                       if (ixs->ips.ips_ident_s.len)
+                       {
+                               len = ixs->ips.ips_ident_s.len * IPSEC_PFKEYv2_ALIGN - sizeof(struct sadb_ident);
+                               KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                                           "klips_debug:ipsec_xmit_SAlookup: "
+                                           "allocating %d bytes for ident_s shunt SA of HOLD: skb stored in HOLD.\n",
+                                           len);
+                               if ((ixs->ips.ips_ident_s.data = kmalloc(len, GFP_ATOMIC)) == NULL) {
+                                       printk(KERN_WARNING "klips_debug:ipsec_xmit_SAlookup: "
+                                              "Failed, tried to allocate %d bytes for source ident.\n", 
+                                              len);
+                                       ixs->stats->tx_dropped++;
+                                       spin_unlock(&eroute_lock);
+                                       return IPSEC_XMIT_ERRMEMALLOC;
+                               }
+                               memcpy(ixs->ips.ips_ident_s.data, ixs->eroute->er_ident_s.data, len);
+                       }
+                       ixs->ips.ips_ident_d.type = ixs->eroute->er_ident_d.type;
+                       ixs->ips.ips_ident_d.id = ixs->eroute->er_ident_d.id;
+                       ixs->ips.ips_ident_d.len = ixs->eroute->er_ident_d.len;
+                       if (ixs->ips.ips_ident_d.len)
+                       {
+                               len = ixs->ips.ips_ident_d.len * IPSEC_PFKEYv2_ALIGN - sizeof(struct sadb_ident);
+                               KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                                           "klips_debug:ipsec_xmit_SAlookup: "
+                                           "allocating %d bytes for ident_d shunt SA of HOLD: skb stored in HOLD.\n",
+                                           len);
+                               if ((ixs->ips.ips_ident_d.data = kmalloc(len, GFP_ATOMIC)) == NULL) {
+                                       printk(KERN_WARNING "klips_debug:ipsec_xmit_SAlookup: "
+                                              "Failed, tried to allocate %d bytes for dest ident.\n", 
+                                              len);
+                                       ixs->stats->tx_dropped++;
+                                       spin_unlock(&eroute_lock);
+                                       return IPSEC_XMIT_ERRMEMALLOC;
+                               }
+                               memcpy(ixs->ips.ips_ident_d.data, ixs->eroute->er_ident_d.data, len);
+                       }
+               }
+       }
+
+       spin_unlock(&eroute_lock);
+       return IPSEC_XMIT_OK;
+}
+
+
+enum ipsec_xmit_value
+ipsec_tunnel_restore_hard_header(struct ipsec_xmit_state*ixs)
+{
+       KLIPS_PRINT(debug_tunnel & DB_TN_CROUT,
+                   "klips_debug:ipsec_xmit_restore_hard_header: "
+                   "After recursive xforms -- head,tailroom: %d,%d\n",
+                   skb_headroom(ixs->skb),
+                   skb_tailroom(ixs->skb));
+
+       if(ixs->saved_header) {
+               if(skb_headroom(ixs->skb) < ixs->hard_header_len) {
+                       printk(KERN_WARNING
+                              "klips_error:ipsec_xmit_restore_hard_header: "
+                              "tried to skb_push hhlen=%d, %d available.  This should never happen, please report.\n",
+                              ixs->hard_header_len,
+                              skb_headroom(ixs->skb));
+                       ixs->stats->tx_errors++;
+                       return IPSEC_XMIT_PUSHPULLERR;
+
+               }
+               skb_push(ixs->skb, ixs->hard_header_len);
+               {
+                       int i;
+                       for (i = 0; i < ixs->hard_header_len; i++) {
+                               ixs->skb->data[i] = ixs->saved_header[i];
+                       }
+               }
+       }
+#ifdef CONFIG_IPSEC_NAT_TRAVERSAL
+       if (ixs->natt_type && ixs->natt_head) {
+               struct iphdr *ipp = ip_hdr(ixs->skb);
+               struct udphdr *udp;
+               KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                           "klips_debug:ipsec_tunnel_start_xmit: "
+                           "encapsuling packet into UDP (NAT-Traversal) (%d %d)\n",
+                           ixs->natt_type, ixs->natt_head);
+
+               ixs->iphlen = ipp->ihl << 2;
+               ipp->tot_len =
+                       htons(ntohs(ipp->tot_len) + ixs->natt_head);
+               if(skb_tailroom(ixs->skb) < ixs->natt_head) {
+                       printk(KERN_WARNING "klips_error:ipsec_tunnel_start_xmit: "
+                               "tried to skb_put %d, %d available. "
+                               "This should never happen, please report.\n",
+                               ixs->natt_head,
+                               skb_tailroom(ixs->skb));
+                       ixs->stats->tx_errors++;
+                       return IPSEC_XMIT_ESPUDP;
+               }
+               skb_put(ixs->skb, ixs->natt_head);
+
+               udp = (struct udphdr *)((char *)ipp + ixs->iphlen);
+
+               /* move ESP hdr after UDP hdr */
+               memmove((void *)((char *)udp + ixs->natt_head),
+                       (void *)(udp),
+                       ntohs(ipp->tot_len) - ixs->iphlen - ixs->natt_head);
+
+               /* clear UDP & Non-IKE Markers (if any) */
+               memset(udp, 0, ixs->natt_head);
+
+               /* fill UDP with usefull informations ;-) */
+               udp->source = htons(ixs->natt_sport);
+               udp->dest = htons(ixs->natt_dport);
+               udp->len = htons(ntohs(ipp->tot_len) - ixs->iphlen);
+
+               /* set protocol */
+               ipp->protocol = IPPROTO_UDP;
+
+               /* fix IP checksum */
+               ipp->check = 0;
+               ipp->check = ip_fast_csum((unsigned char *)ipp, ipp->ihl);
+       }
+#endif 
+       KLIPS_PRINT(debug_tunnel & DB_TN_CROUT,
+                   "klips_debug:ipsec_xmit_restore_hard_header: "
+                   "With hard_header, final head,tailroom: %d,%d\n",
+                   skb_headroom(ixs->skb),
+                   skb_tailroom(ixs->skb));
+
+       return IPSEC_XMIT_OK;
+}
+
+enum ipsec_xmit_value
+ipsec_tunnel_send(struct ipsec_xmit_state*ixs)
+{
+#ifdef NETDEV_25
+       struct flowi fl;
+#endif
+  
+#ifdef NET_21  /* 2.2 and 2.4 kernels */
+       /* new route/dst cache code from James Morris */
+       ixs->skb->dev = ixs->physdev;
+#ifdef NETDEV_25
+       memset (&fl, 0x0, sizeof (struct flowi));
+       fl.oif = ixs->physdev->iflink;
+       fl.nl_u.ip4_u.daddr = ip_hdr(ixs->skb)->daddr;
+       fl.nl_u.ip4_u.saddr = ixs->pass ? 0 : ip_hdr(ixs->skb)->saddr;
+       fl.nl_u.ip4_u.tos = RT_TOS(ip_hdr(ixs->skb)->tos);
+       fl.proto = ip_hdr(ixs->skb)->protocol;
+       if ((ixs->error = ip_route_output_key(&ixs->route, &fl))) {
+#else
+       /*skb_orphan(ixs->skb);*/
+       if((ixs->error = ip_route_output(&ixs->route,
+                                   ixs->skb->nh.iph->daddr,
+                                   ixs->pass ? 0 : ip_hdr(ixs->skb)->saddr,
+                                   RT_TOS(ip_hdr(ixs->skb)->tos),
+                                    /* mcr->rgb: should this be 0 instead? */
+                                   ixs->physdev->iflink))) {
+#endif
+               ixs->stats->tx_errors++;
+               KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                           "klips_debug:ipsec_xmit_send: "
+                           "ip_route_output failed with error code %d, rt->u.dst.dev=%s, dropped\n",
+                           ixs->error,
+                           ixs->route->u.dst.dev->name);
+               return IPSEC_XMIT_ROUTEERR;
+       }
+       if(ixs->dev == ixs->route->u.dst.dev) {
+               ip_rt_put(ixs->route);
+               /* This is recursion, drop it. */
+               ixs->stats->tx_errors++;
+               KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                           "klips_debug:ipsec_xmit_send: "
+                           "suspect recursion, dev=rt->u.dst.dev=%s, dropped\n",
+                           ixs->dev->name);
+               return IPSEC_XMIT_RECURSDETECT;
+       }
+       dst_release(ixs->skb->dst);
+       ixs->skb->dst = &ixs->route->u.dst;
+       ixs->stats->tx_bytes += ixs->skb->len;
+       if(ixs->skb->len < skb_network_header(ixs->skb) - ixs->skb->data) {
+               ixs->stats->tx_errors++;
+               printk(KERN_WARNING
+                      "klips_error:ipsec_xmit_send: "
+                      "tried to __skb_pull nh-data=%ld, %d available.  This should never happen, please report.\n",
+                      (unsigned long)(skb_network_header(ixs->skb) - ixs->skb->data),
+                      ixs->skb->len);
+               return IPSEC_XMIT_PUSHPULLERR;
+       }
+       __skb_pull(ixs->skb, skb_network_header(ixs->skb) - ixs->skb->data);
+#ifdef SKB_RESET_NFCT
+       if(!ixs->pass) {
+         nf_conntrack_put(ixs->skb->nfct);
+         ixs->skb->nfct = NULL;
+       }
+#if defined(CONFIG_NETFILTER_DEBUG) && defined(HAVE_SKB_NF_DEBUG)
+       ixs->skb->nf_debug = 0;
+#endif /* CONFIG_NETFILTER_DEBUG */
+#endif /* SKB_RESET_NFCT */
+       KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                   "klips_debug:ipsec_xmit_send: "
+                   "...done, calling ip_send() on device:%s\n",
+                   ixs->skb->dev ? ixs->skb->dev->name : "NULL");
+       KLIPS_IP_PRINT(debug_tunnel & DB_TN_XMIT, ip_hdr(ixs->skb));
+#ifdef NETDEV_23       /* 2.4 kernels */
+       {
+               int err;
+
+               err = NF_HOOK(PF_INET, NF_IP_LOCAL_OUT, ixs->skb, NULL, ixs->route->u.dst.dev,
+                             ipsec_tunnel_xmit2);
+               if(err != NET_XMIT_SUCCESS && err != NET_XMIT_CN) {
+                       if(net_ratelimit())
+                               printk(KERN_ERR
+                                      "klips_error:ipsec_xmit_send: "
+                                      "ip_send() failed, err=%d\n", 
+                                      -err);
+                       ixs->stats->tx_errors++;
+                       ixs->stats->tx_aborted_errors++;
+                       ixs->skb = NULL;
+                       return IPSEC_XMIT_IPSENDFAILURE;
+               }
+       }
+#else /* NETDEV_23 */  /* 2.2 kernels */
+       ip_send(ixs->skb);
+#endif /* NETDEV_23 */
+#else /* NET_21 */     /* 2.0 kernels */
+       ixs->skb->arp = 1;
+       /* ISDN/ASYNC PPP from Matjaz Godec. */
+       /*      skb->protocol = htons(ETH_P_IP); */
+       KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                   "klips_debug:ipsec_xmit_send: "
+                   "...done, calling dev_queue_xmit() or ip_fragment().\n");
+       IP_SEND(ixs->skb, ixs->physdev);
+#endif /* NET_21 */
+       ixs->stats->tx_packets++;
+
+       ixs->skb = NULL;
+       
+       return IPSEC_XMIT_OK;
+}
+
+void
+ipsec_tunnel_cleanup(struct ipsec_xmit_state*ixs)
+{
+#if defined(HAS_NETIF_QUEUE) || defined (HAVE_NETIF_QUEUE)
+       netif_wake_queue(ixs->dev);
+#else /* defined(HAS_NETIF_QUEUE) || defined (HAVE_NETIF_QUEUE) */
+       ixs->dev->tbusy = 0;
+#endif /* defined(HAS_NETIF_QUEUE) || defined (HAVE_NETIF_QUEUE) */
+       if(ixs->saved_header) {
+               kfree(ixs->saved_header);
+       }
+       if(ixs->skb) {
+               dev_kfree_skb(ixs->skb, FREE_WRITE);
+       }
+       if(ixs->oskb) {
+               dev_kfree_skb(ixs->oskb, FREE_WRITE);
+       }
+       if (ixs->ips.ips_ident_s.data) {
+               kfree(ixs->ips.ips_ident_s.data);
+       }
+       if (ixs->ips.ips_ident_d.data) {
+               kfree(ixs->ips.ips_ident_d.data);
+       }
+}
+
+/*
+ *     This function assumes it is being called from dev_queue_xmit()
+ *     and that skb is filled properly by that function.
+ */
+int
+ipsec_tunnel_start_xmit(struct sk_buff *skb, struct net_device *dev)
+{
+       struct ipsec_xmit_state ixs_mem;
+       struct ipsec_xmit_state *ixs = &ixs_mem;
+       enum ipsec_xmit_value stat;
+
+#ifdef CONFIG_IPSEC_NAT_TRAVERSAL
+       ixs->natt_type = 0, ixs->natt_head = 0;
+       ixs->natt_sport = 0, ixs->natt_dport = 0;
+#endif
+
+       memset((caddr_t)ixs, 0, sizeof(*ixs));
+       ixs->oskb = NULL;
+       ixs->saved_header = NULL;       /* saved copy of the hard header */
+       ixs->route = NULL;
+       memset((caddr_t)&(ixs->ips), 0, sizeof(ixs->ips));
+       ixs->dev = dev;
+       ixs->skb = skb;
+
+       stat = ipsec_xmit_sanity_check_dev(ixs);
+       if(stat != IPSEC_XMIT_OK) {
+               goto cleanup;
+       }
+
+       stat = ipsec_xmit_sanity_check_skb(ixs);
+       if(stat != IPSEC_XMIT_OK) {
+               goto cleanup;
+       }
+
+       stat = ipsec_tunnel_strip_hard_header(ixs);
+       if(stat != IPSEC_XMIT_OK) {
+               goto cleanup;
+       }
+
+       stat = ipsec_tunnel_SAlookup(ixs);
+       if(stat != IPSEC_XMIT_OK) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                           "klips_debug:ipsec_tunnel_start_xmit: SAlookup failed: %d\n",
+                           stat);
+               goto cleanup;
+       }
+       
+       ixs->innersrc = ixs->iph->saddr;
+       /* start encapsulation loop here XXX */
+       do {
+               stat = ipsec_xmit_encap_bundle(ixs);
+               if(stat != IPSEC_XMIT_OK) {
+                       if(stat == IPSEC_XMIT_PASS) {
+                               goto bypass;
+                       }
+                       
+                       KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                                   "klips_debug:ipsec_tunnel_start_xmit: encap_bundle failed: %d\n",
+                                   stat);
+                       goto cleanup;
+               }
+
+               ixs->matcher.sen_ip_src.s_addr = ixs->iph->saddr;
+               ixs->matcher.sen_ip_dst.s_addr = ixs->iph->daddr;
+               ixs->matcher.sen_proto = ixs->iph->protocol;
+               ipsec_extract_ports(ixs->iph, &ixs->matcher);
+
+               spin_lock(&eroute_lock);
+               ixs->eroute = ipsec_findroute(&ixs->matcher);
+               if(ixs->eroute) {
+                       ixs->outgoing_said = ixs->eroute->er_said;
+                       ixs->eroute_pid = ixs->eroute->er_pid;
+                       ixs->eroute->er_count++;
+                       ixs->eroute->er_lasttime = jiffies/HZ;
+               }
+               spin_unlock(&eroute_lock);
+
+               KLIPS_PRINT((debug_tunnel & DB_TN_XMIT) &&
+                           /* ((ixs->orgdst != ixs->newdst) || (ixs->orgsrc != ixs->newsrc)) */
+                           (ixs->orgedst != ixs->outgoing_said.dst.u.v4.sin_addr.s_addr) &&
+                           ixs->outgoing_said.dst.u.v4.sin_addr.s_addr &&
+                           ixs->eroute,
+                           "klips_debug:ipsec_tunnel_start_xmit: "
+                           "We are recursing here.\n");
+
+       } while(/*((ixs->orgdst != ixs->newdst) || (ixs->orgsrc != ixs->newsrc))*/
+               (ixs->orgedst != ixs->outgoing_said.dst.u.v4.sin_addr.s_addr) &&
+               ixs->outgoing_said.dst.u.v4.sin_addr.s_addr &&
+               ixs->eroute);
+       
+       stat = ipsec_tunnel_restore_hard_header(ixs);
+       if(stat != IPSEC_XMIT_OK) {
+               goto cleanup;
+       }
+
+ bypass:
+       stat = ipsec_tunnel_send(ixs);
+
+ cleanup:
+       ipsec_tunnel_cleanup(ixs);
+
+       return 0;
+}
+
+DEBUG_NO_STATIC struct net_device_stats *
+ipsec_tunnel_get_stats(struct net_device *dev)
+{
+       return &(((struct ipsecpriv *)(dev->priv))->mystats);
+}
+
+/*
+ * Revectored calls.
+ * For each of these calls, a field exists in our private structure.
+ */
+
+DEBUG_NO_STATIC int
+ipsec_tunnel_hard_header(struct sk_buff *skb, struct net_device *dev,
+       unsigned short type, void *daddr, void *saddr, unsigned len)
+{
+       struct ipsecpriv *prv = dev->priv;
+       struct net_device *tmp;
+       int ret;
+       struct net_device_stats *stats; /* This device's statistics */
+       
+       if(skb == NULL) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                           "klips_debug:ipsec_tunnel_hard_header: "
+                           "no skb...\n");
+               return -ENODATA;
+       }
+
+       if(dev == NULL) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                           "klips_debug:ipsec_tunnel_hard_header: "
+                           "no device...\n");
+               return -ENODEV;
+       }
+
+       KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                   "klips_debug:ipsec_tunnel_hard_header: "
+                   "skb->dev=%s dev=%s.\n",
+                   skb->dev ? skb->dev->name : "NULL",
+                   dev->name);
+       
+       if(prv == NULL) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                           "klips_debug:ipsec_tunnel_hard_header: "
+                           "no private space associated with dev=%s\n",
+                           dev->name ? dev->name : "NULL");
+               return -ENODEV;
+       }
+
+       stats = (struct net_device_stats *) &(prv->mystats);
+
+       if(prv->dev == NULL) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                           "klips_debug:ipsec_tunnel_hard_header: "
+                           "no physical device associated with dev=%s\n",
+                           dev->name ? dev->name : "NULL");
+               stats->tx_dropped++;
+               return -ENODEV;
+       }
+
+       /* check if we have to send a IPv6 packet. It might be a Router
+          Solicitation, where the building of the packet happens in
+          reverse order:
+          1. ll hdr,
+          2. IPv6 hdr,
+          3. ICMPv6 hdr
+          -> skb->nh.raw is still uninitialized when this function is
+          called!!  If this is no IPv6 packet, we can print debugging
+          messages, otherwise we skip all debugging messages and just
+          build the ll header */
+       if(type != ETH_P_IPV6) {
+               /* execute this only, if we don't have to build the
+                  header for a IPv6 packet */
+               if(!prv->hard_header) {
+                       KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                                   "klips_debug:ipsec_tunnel_hard_header: "
+                                   "physical device has been detached, packet dropped 0p%p->0p%p len=%d type=%d dev=%s->NULL ",
+                                   saddr,
+                                   daddr,
+                                   len,
+                                   type,
+                                   dev->name);
+#ifdef NET_21
+                       KLIPS_PRINTMORE(debug_tunnel & DB_TN_REVEC,
+                                       "ip=%08x->%08x\n",
+                                       (__u32)ntohl(ip_hdr(skb)->saddr),
+                                       (__u32)ntohl(ip_hdr(skb)->daddr) );
+#else /* NET_21 */
+                       KLIPS_PRINTMORE(debug_tunnel & DB_TN_REVEC,
+                                       "ip=%08x->%08x\n",
+                                       (__u32)ntohl(skb->ip_hdr->saddr),
+                                       (__u32)ntohl(skb->ip_hdr->daddr) );
+#endif /* NET_21 */
+                       stats->tx_dropped++;
+                       return -ENODEV;
+               }
+               
+#define da ((struct net_device *)(prv->dev))->dev_addr
+               KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                           "klips_debug:ipsec_tunnel_hard_header: "
+                           "Revectored 0p%p->0p%p len=%d type=%d dev=%s->%s dev_addr=%02x:%02x:%02x:%02x:%02x:%02x ",
+                           saddr,
+                           daddr,
+                           len,
+                           type,
+                           dev->name,
+                           prv->dev->name,
+                           da[0], da[1], da[2], da[3], da[4], da[5]);
+#ifdef NET_21
+               KLIPS_PRINTMORE(debug_tunnel & DB_TN_REVEC,
+                           "ip=%08x->%08x\n",
+                           (__u32)ntohl(ip_hdr(skb)->saddr),
+                           (__u32)ntohl(ip_hdr(skb)->daddr) );
+#else /* NET_21 */
+               KLIPS_PRINTMORE(debug_tunnel & DB_TN_REVEC,
+                           "ip=%08x->%08x\n",
+                           (__u32)ntohl(skb->ip_hdr->saddr),
+                           (__u32)ntohl(skb->ip_hdr->daddr) );
+#endif /* NET_21 */
+       } else {
+               KLIPS_PRINT(debug_tunnel,
+                           "klips_debug:ipsec_tunnel_hard_header: "
+                           "is IPv6 packet, skip debugging messages, only revector and build linklocal header.\n");
+       }                                                                       
+       tmp = skb->dev;
+       skb->dev = prv->dev;
+       ret = prv->hard_header(skb, prv->dev, type, (void *)daddr, (void *)saddr, len);
+       skb->dev = tmp;
+       return ret;
+}
+
+DEBUG_NO_STATIC int
+#ifdef NET_21
+ipsec_tunnel_rebuild_header(struct sk_buff *skb)
+#else /* NET_21 */
+ipsec_tunnel_rebuild_header(void *buff, struct net_device *dev,
+                       unsigned long raddr, struct sk_buff *skb)
+#endif /* NET_21 */
+{
+       struct ipsecpriv *prv = skb->dev->priv;
+       struct net_device *tmp;
+       int ret;
+       struct net_device_stats *stats; /* This device's statistics */
+       
+       if(skb->dev == NULL) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                           "klips_debug:ipsec_tunnel_rebuild_header: "
+                           "no device...");
+               return -ENODEV;
+       }
+
+       if(prv == NULL) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                           "klips_debug:ipsec_tunnel_rebuild_header: "
+                           "no private space associated with dev=%s",
+                           skb->dev->name ? skb->dev->name : "NULL");
+               return -ENODEV;
+       }
+
+       stats = (struct net_device_stats *) &(prv->mystats);
+
+       if(prv->dev == NULL) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                           "klips_debug:ipsec_tunnel_rebuild_header: "
+                           "no physical device associated with dev=%s",
+                           skb->dev->name ? skb->dev->name : "NULL");
+               stats->tx_dropped++;
+               return -ENODEV;
+       }
+
+       if(!prv->rebuild_header) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                           "klips_debug:ipsec_tunnel_rebuild_header: "
+                           "physical device has been detached, packet dropped skb->dev=%s->NULL ",
+                           skb->dev->name);
+#ifdef NET_21
+               KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                           "ip=%08x->%08x\n",
+                           (__u32)ntohl(ip_hdr(skb)->saddr),
+                           (__u32)ntohl(ip_hdr(skb)->daddr) );
+#else /* NET_21 */
+               KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                           "ip=%08x->%08x\n",
+                           (__u32)ntohl(skb->ip_hdr->saddr),
+                           (__u32)ntohl(skb->ip_hdr->daddr) );
+#endif /* NET_21 */
+               stats->tx_dropped++;
+               return -ENODEV;
+       }
+
+       KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                   "klips_debug:ipsec_tunnel: "
+                   "Revectored rebuild_header dev=%s->%s ",
+                   skb->dev->name, prv->dev->name);
+#ifdef NET_21
+       KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                   "ip=%08x->%08x\n",
+                   (__u32)ntohl(ip_hdr(skb)->saddr),
+                   (__u32)ntohl(ip_hdr(skb)->daddr) );
+#else /* NET_21 */
+       KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                   "ip=%08x->%08x\n",
+                   (__u32)ntohl(skb->ip_hdr->saddr),
+                   (__u32)ntohl(skb->ip_hdr->daddr) );
+#endif /* NET_21 */
+       tmp = skb->dev;
+       skb->dev = prv->dev;
+       
+#ifdef NET_21
+       ret = prv->rebuild_header(skb);
+#else /* NET_21 */
+       ret = prv->rebuild_header(buff, prv->dev, raddr, skb);
+#endif /* NET_21 */
+       skb->dev = tmp;
+       return ret;
+}
+
+DEBUG_NO_STATIC int
+ipsec_tunnel_set_mac_address(struct net_device *dev, void *addr)
+{
+       struct ipsecpriv *prv = dev->priv;
+       
+       struct net_device_stats *stats; /* This device's statistics */
+       
+       if(dev == NULL) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                           "klips_debug:ipsec_tunnel_set_mac_address: "
+                           "no device...");
+               return -ENODEV;
+       }
+
+       if(prv == NULL) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                           "klips_debug:ipsec_tunnel_set_mac_address: "
+                           "no private space associated with dev=%s",
+                           dev->name ? dev->name : "NULL");
+               return -ENODEV;
+       }
+
+       stats = (struct net_device_stats *) &(prv->mystats);
+
+       if(prv->dev == NULL) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                           "klips_debug:ipsec_tunnel_set_mac_address: "
+                           "no physical device associated with dev=%s",
+                           dev->name ? dev->name : "NULL");
+               stats->tx_dropped++;
+               return -ENODEV;
+       }
+
+       if(!prv->set_mac_address) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                           "klips_debug:ipsec_tunnel_set_mac_address: "
+                           "physical device has been detached, cannot set - skb->dev=%s->NULL\n",
+                           dev->name);
+               return -ENODEV;
+       }
+
+       KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                   "klips_debug:ipsec_tunnel_set_mac_address: "
+                   "Revectored dev=%s->%s addr=0p%p\n",
+                   dev->name, prv->dev->name, addr);
+       return prv->set_mac_address(prv->dev, addr);
+
+}
+
+#ifndef NET_21
+DEBUG_NO_STATIC void
+ipsec_tunnel_cache_bind(struct hh_cache **hhp, struct net_device *dev,
+                                unsigned short htype, __u32 daddr)
+{
+       struct ipsecpriv *prv = dev->priv;
+       
+       struct net_device_stats *stats; /* This device's statistics */
+       
+       if(dev == NULL) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                           "klips_debug:ipsec_tunnel_cache_bind: "
+                           "no device...");
+               return;
+       }
+
+       if(prv == NULL) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                           "klips_debug:ipsec_tunnel_cache_bind: "
+                           "no private space associated with dev=%s",
+                           dev->name ? dev->name : "NULL");
+               return;
+       }
+
+       stats = (struct net_device_stats *) &(prv->mystats);
+
+       if(prv->dev == NULL) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                           "klips_debug:ipsec_tunnel_cache_bind: "
+                           "no physical device associated with dev=%s",
+                           dev->name ? dev->name : "NULL");
+               stats->tx_dropped++;
+               return;
+       }
+
+       if(!prv->header_cache_bind) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                           "klips_debug:ipsec_tunnel_cache_bind: "
+                           "physical device has been detached, cannot set - skb->dev=%s->NULL\n",
+                           dev->name);
+               stats->tx_dropped++;
+               return;
+       }
+
+       KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                   "klips_debug:ipsec_tunnel_cache_bind: "
+                   "Revectored \n");
+       prv->header_cache_bind(hhp, prv->dev, htype, daddr);
+       return;
+}
+#endif /* !NET_21 */
+
+
+DEBUG_NO_STATIC void
+ipsec_tunnel_cache_update(struct hh_cache *hh, struct net_device *dev, unsigned char *  haddr)
+{
+       struct ipsecpriv *prv = dev->priv;
+       
+       struct net_device_stats *stats; /* This device's statistics */
+       
+       if(dev == NULL) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                           "klips_debug:ipsec_tunnel_cache_update: "
+                           "no device...");
+               return;
+       }
+
+       if(prv == NULL) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                           "klips_debug:ipsec_tunnel_cache_update: "
+                           "no private space associated with dev=%s",
+                           dev->name ? dev->name : "NULL");
+               return;
+       }
+
+       stats = (struct net_device_stats *) &(prv->mystats);
+
+       if(prv->dev == NULL) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                           "klips_debug:ipsec_tunnel_cache_update: "
+                           "no physical device associated with dev=%s",
+                           dev->name ? dev->name : "NULL");
+               stats->tx_dropped++;
+               return;
+       }
+
+       if(!prv->header_cache_update) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                           "klips_debug:ipsec_tunnel_cache_update: "
+                           "physical device has been detached, cannot set - skb->dev=%s->NULL\n",
+                           dev->name);
+               return;
+       }
+
+       KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                   "klips_debug:ipsec_tunnel: "
+                   "Revectored cache_update\n");
+       prv->header_cache_update(hh, prv->dev, haddr);
+       return;
+}
+
+#ifdef NET_21
+DEBUG_NO_STATIC int
+ipsec_tunnel_neigh_setup(struct neighbour *n)
+{
+       KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                   "klips_debug:ipsec_tunnel_neigh_setup:\n");
+
+        if (n->nud_state == NUD_NONE) {
+                n->ops = &arp_broken_ops;
+                n->output = n->ops->output;
+        }
+        return 0;
+}
+
+DEBUG_NO_STATIC int
+ipsec_tunnel_neigh_setup_dev(struct net_device *dev, struct neigh_parms *p)
+{
+       KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                   "klips_debug:ipsec_tunnel_neigh_setup_dev: "
+                   "setting up %s\n",
+                   dev ? dev->name : "NULL");
+
+        if (p->tbl->family == AF_INET) {
+                p->neigh_setup = ipsec_tunnel_neigh_setup;
+                p->ucast_probes = 0;
+                p->mcast_probes = 0;
+        }
+        return 0;
+}
+#endif /* NET_21 */
+
+/*
+ * We call the attach routine to attach another device.
+ */
+
+DEBUG_NO_STATIC int
+ipsec_tunnel_attach(struct net_device *dev, struct net_device *physdev)
+{
+        int i;
+       struct ipsecpriv *prv = dev->priv;
+
+       if(dev == NULL) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                           "klips_debug:ipsec_tunnel_attach: "
+                           "no device...");
+               return -ENODEV;
+       }
+
+       if(prv == NULL) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                           "klips_debug:ipsec_tunnel_attach: "
+                           "no private space associated with dev=%s",
+                           dev->name ? dev->name : "NULL");
+               return -ENODATA;
+       }
+
+       prv->dev = physdev;
+       prv->hard_start_xmit = physdev->hard_start_xmit;
+       prv->get_stats = physdev->get_stats;
+
+       if (physdev->hard_header) {
+               prv->hard_header = physdev->hard_header;
+               dev->hard_header = ipsec_tunnel_hard_header;
+       } else
+               dev->hard_header = NULL;
+       
+       if (physdev->rebuild_header) {
+               prv->rebuild_header = physdev->rebuild_header;
+               dev->rebuild_header = ipsec_tunnel_rebuild_header;
+       } else
+               dev->rebuild_header = NULL;
+       
+       if (physdev->set_mac_address) {
+               prv->set_mac_address = physdev->set_mac_address;
+               dev->set_mac_address = ipsec_tunnel_set_mac_address;
+       } else
+               dev->set_mac_address = NULL;
+       
+#ifndef NET_21
+       if (physdev->header_cache_bind) {
+               prv->header_cache_bind = physdev->header_cache_bind;
+               dev->header_cache_bind = ipsec_tunnel_cache_bind;
+       } else
+               dev->header_cache_bind = NULL;
+#endif /* !NET_21 */
+
+       if (physdev->header_cache_update) {
+               prv->header_cache_update = physdev->header_cache_update;
+               dev->header_cache_update = ipsec_tunnel_cache_update;
+       } else
+               dev->header_cache_update = NULL;
+
+       dev->hard_header_len = physdev->hard_header_len;
+
+#ifdef NET_21
+/*     prv->neigh_setup        = physdev->neigh_setup; */
+       dev->neigh_setup        = ipsec_tunnel_neigh_setup_dev;
+#endif /* NET_21 */
+       dev->mtu = 16260; /* 0xfff0; */ /* dev->mtu; */
+       prv->mtu = physdev->mtu;
+
+#ifdef PHYSDEV_TYPE
+       dev->type = physdev->type; /* ARPHRD_TUNNEL; */
+#endif /*  PHYSDEV_TYPE */
+
+       dev->addr_len = physdev->addr_len;
+       for (i=0; i<dev->addr_len; i++) {
+               dev->dev_addr[i] = physdev->dev_addr[i];
+       }
+#ifdef CONFIG_KLIPS_DEBUG
+       if(debug_tunnel & DB_TN_INIT) {
+               printk(KERN_INFO "klips_debug:ipsec_tunnel_attach: "
+                      "physical device %s being attached has HW address: %2x",
+                      physdev->name, physdev->dev_addr[0]);
+               for (i=1; i < physdev->addr_len; i++) {
+                       printk(":%02x", physdev->dev_addr[i]);
+               }
+               printk("\n");
+       }
+#endif /* CONFIG_KLIPS_DEBUG */
+
+       return 0;
+}
+
+/*
+ * We call the detach routine to detach the ipsec tunnel from another device.
+ */
+
+DEBUG_NO_STATIC int
+ipsec_tunnel_detach(struct net_device *dev)
+{
+        int i;
+       struct ipsecpriv *prv = dev->priv;
+
+       if(dev == NULL) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                           "klips_debug:ipsec_tunnel_detach: "
+                           "no device...");
+               return -ENODEV;
+       }
+
+       if(prv == NULL) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_REVEC,
+                           "klips_debug:ipsec_tunnel_detach: "
+                           "no private space associated with dev=%s",
+                           dev->name ? dev->name : "NULL");
+               return -ENODATA;
+       }
+
+       KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                   "klips_debug:ipsec_tunnel_detach: "
+                   "physical device %s being detached from virtual device %s\n",
+                   prv->dev ? prv->dev->name : "NULL",
+                   dev->name);
+
+       ipsec_dev_put(prv->dev);
+       prv->dev = NULL;
+       prv->hard_start_xmit = NULL;
+       prv->get_stats = NULL;
+
+       prv->hard_header = NULL;
+#ifdef DETACH_AND_DOWN
+       dev->hard_header = NULL;
+#endif /* DETACH_AND_DOWN */
+       
+       prv->rebuild_header = NULL;
+#ifdef DETACH_AND_DOWN
+       dev->rebuild_header = NULL;
+#endif /* DETACH_AND_DOWN */
+       
+       prv->set_mac_address = NULL;
+#ifdef DETACH_AND_DOWN
+       dev->set_mac_address = NULL;
+#endif /* DETACH_AND_DOWN */
+       
+#ifndef NET_21
+       prv->header_cache_bind = NULL;
+#ifdef DETACH_AND_DOWN
+       dev->header_cache_bind = NULL;
+#endif /* DETACH_AND_DOWN */
+#endif /* !NET_21 */
+
+       prv->header_cache_update = NULL;
+#ifdef DETACH_AND_DOWN
+       dev->header_cache_update = NULL;
+#endif /* DETACH_AND_DOWN */
+
+#ifdef NET_21
+/*     prv->neigh_setup        = NULL; */
+#ifdef DETACH_AND_DOWN
+       dev->neigh_setup        = NULL;
+#endif /* DETACH_AND_DOWN */
+#endif /* NET_21 */
+       dev->hard_header_len = 0;
+#ifdef DETACH_AND_DOWN
+       dev->mtu = 0;
+#endif /* DETACH_AND_DOWN */
+       prv->mtu = 0;
+       for (i=0; i<MAX_ADDR_LEN; i++) {
+               dev->dev_addr[i] = 0;
+       }
+       dev->addr_len = 0;
+#ifdef PHYSDEV_TYPE
+       dev->type = ARPHRD_VOID; /* ARPHRD_TUNNEL; */
+#endif /*  PHYSDEV_TYPE */
+       
+       return 0;
+}
+
+/*
+ * We call the clear routine to detach all ipsec tunnels from other devices.
+ */
+DEBUG_NO_STATIC int
+ipsec_tunnel_clear(void)
+{
+       int i;
+       struct net_device *ipsecdev = NULL, *prvdev;
+       struct ipsecpriv *prv;
+       int ret;
+
+       KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                   "klips_debug:ipsec_tunnel_clear: .\n");
+
+       for(i = 0; i < IPSEC_NUM_IF; i++) {
+               ipsecdev = ipsecdevices[i];
+               if(ipsecdev != NULL) {
+                       if((prv = (struct ipsecpriv *)(ipsecdev->priv))) {
+                               prvdev = (struct net_device *)(prv->dev);
+                               if(prvdev) {
+                                       KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                                                   "klips_debug:ipsec_tunnel_clear: "
+                                                   "physical device for device %s is %s\n",
+                                                   ipsecdev->name, prvdev->name);
+                                       if((ret = ipsec_tunnel_detach(ipsecdev))) {
+                                               KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                                                           "klips_debug:ipsec_tunnel_clear: "
+                                                           "error %d detatching device %s from device %s.\n",
+                                                           ret, ipsecdev->name, prvdev->name);
+                                               return ret;
+                                       }
+                               }
+                       }
+               }
+       }
+       return 0;
+}
+
+DEBUG_NO_STATIC int
+ipsec_tunnel_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+{
+       struct ipsectunnelconf *cf = (struct ipsectunnelconf *)&ifr->ifr_data;
+       struct ipsecpriv *prv = dev->priv;
+       struct net_device *them; /* physical device */
+#ifdef CONFIG_IP_ALIAS
+       char *colon;
+       char realphysname[IFNAMSIZ];
+#endif /* CONFIG_IP_ALIAS */
+       
+       if(dev == NULL) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                           "klips_debug:ipsec_tunnel_ioctl: "
+                           "device not supplied.\n");
+               return -ENODEV;
+       }
+
+       KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                   "klips_debug:ipsec_tunnel_ioctl: "
+                   "tncfg service call #%d for dev=%s\n",
+                   cmd,
+                   dev->name ? dev->name : "NULL");
+       switch (cmd) {
+       /* attach a virtual ipsec? device to a physical device */
+       case IPSEC_SET_DEV:
+               KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                           "klips_debug:ipsec_tunnel_ioctl: "
+                           "calling ipsec_tunnel_attatch...\n");
+#ifdef CONFIG_IP_ALIAS
+               /* If this is an IP alias interface, get its real physical name */
+               strncpy(realphysname, cf->cf_name, IFNAMSIZ);
+               realphysname[IFNAMSIZ-1] = 0;
+               colon = strchr(realphysname, ':');
+               if (colon) *colon = 0;
+               them = ipsec_dev_get(realphysname);
+#else /* CONFIG_IP_ALIAS */
+               them = ipsec_dev_get(cf->cf_name);
+#endif /* CONFIG_IP_ALIAS */
+
+               if (them == NULL) {
+                       KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                                   "klips_debug:ipsec_tunnel_ioctl: "
+                                   "physical device %s requested is null\n",
+                                   cf->cf_name);
+                       return -ENXIO;
+               }
+               
+#if 0
+               if (them->flags & IFF_UP) {
+                       KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                                   "klips_debug:ipsec_tunnel_ioctl: "
+                                   "physical device %s requested is not up.\n",
+                                   cf->cf_name);
+                       ipsec_dev_put(them);
+                       return -ENXIO;
+               }
+#endif
+               
+               if (prv && prv->dev) {
+                       KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                                   "klips_debug:ipsec_tunnel_ioctl: "
+                                   "virtual device is already connected to %s.\n",
+                                   prv->dev->name ? prv->dev->name : "NULL");
+                       ipsec_dev_put(them);
+                       return -EBUSY;
+               }
+               return ipsec_tunnel_attach(dev, them);
+
+       case IPSEC_DEL_DEV:
+               KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                           "klips_debug:ipsec_tunnel_ioctl: "
+                           "calling ipsec_tunnel_detatch.\n");
+               if (! prv->dev) {
+                       KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                                   "klips_debug:ipsec_tunnel_ioctl: "
+                                   "physical device not connected.\n");
+                       return -ENODEV;
+               }
+               return ipsec_tunnel_detach(dev);
+              
+       case IPSEC_CLR_DEV:
+               KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                           "klips_debug:ipsec_tunnel_ioctl: "
+                           "calling ipsec_tunnel_clear.\n");
+               return ipsec_tunnel_clear();
+
+       default:
+               KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                           "klips_debug:ipsec_tunnel_ioctl: "
+                           "unknown command %d.\n",
+                           cmd);
+               return -EOPNOTSUPP;
+       }
+}
+
+struct net_device *ipsec_get_device(int inst)
+{
+  struct net_device *ipsec_dev;
+
+  ipsec_dev = NULL;
+
+  if(inst < IPSEC_NUM_IF) {
+    ipsec_dev = ipsecdevices[inst];
+  }
+
+  return ipsec_dev;
+}
+
+int
+ipsec_device_event(struct notifier_block *unused, unsigned long event, void *ptr)
+{
+       struct net_device *dev = ptr;
+       struct net_device *ipsec_dev;
+       struct ipsecpriv *priv;
+       int i;
+
+       if (dev == NULL) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                           "klips_debug:ipsec_device_event: "
+                           "dev=NULL for event type %ld.\n",
+                           event);
+               return(NOTIFY_DONE);
+       }
+
+       /* check for loopback devices */
+       if (dev && (dev->flags & IFF_LOOPBACK)) {
+               return(NOTIFY_DONE);
+       }
+
+       switch (event) {
+       case NETDEV_DOWN:
+               /* look very carefully at the scope of these compiler
+                  directives before changing anything... -- RGB */
+#ifdef NET_21
+       case NETDEV_UNREGISTER:
+               switch (event) {
+               case NETDEV_DOWN:
+#endif /* NET_21 */
+                       KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                                   "klips_debug:ipsec_device_event: "
+                                   "NETDEV_DOWN dev=%s flags=%x\n",
+                                   dev->name,
+                                   dev->flags);
+                       if(strncmp(dev->name, "ipsec", strlen("ipsec")) == 0) {
+                               printk(KERN_CRIT "IPSEC EVENT: KLIPS device %s shut down.\n",
+                                      dev->name);
+                       }
+#ifdef NET_21
+                       break;
+               case NETDEV_UNREGISTER:
+                       KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                                   "klips_debug:ipsec_device_event: "
+                                   "NETDEV_UNREGISTER dev=%s flags=%x\n",
+                                   dev->name,
+                                   dev->flags);
+                       break;
+               }
+#endif /* NET_21 */
+               
+               /* find the attached physical device and detach it. */
+               for(i = 0; i < IPSEC_NUM_IF; i++) {
+                       ipsec_dev = ipsecdevices[i];
+
+                       if(ipsec_dev) {
+                               priv = (struct ipsecpriv *)(ipsec_dev->priv);
+                               if(priv) {
+                                       ;
+                                       if(((struct net_device *)(priv->dev)) == dev) {
+                                               /* dev_close(ipsec_dev); */
+                                               /* return */ ipsec_tunnel_detach(ipsec_dev);
+                                               KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                                                           "klips_debug:ipsec_device_event: "
+                                                           "device '%s' has been detached.\n",
+                                                           ipsec_dev->name);
+                                               break;
+                                       }
+                               } else {
+                                       KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                                                   "klips_debug:ipsec_device_event: "
+                                                   "device '%s' has no private data space!\n",
+                                                   ipsec_dev->name);
+                               }
+                       }
+               }
+               break;
+       case NETDEV_UP:
+               KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                           "klips_debug:ipsec_device_event: "
+                           "NETDEV_UP dev=%s\n",
+                           dev->name);
+               break;
+#ifdef NET_21
+       case NETDEV_REBOOT:
+               KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                           "klips_debug:ipsec_device_event: "
+                           "NETDEV_REBOOT dev=%s\n",
+                           dev->name);
+               break;
+       case NETDEV_CHANGE:
+               KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                           "klips_debug:ipsec_device_event: "
+                           "NETDEV_CHANGE dev=%s flags=%x\n",
+                           dev->name,
+                           dev->flags);
+               break;
+       case NETDEV_REGISTER:
+               KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                           "klips_debug:ipsec_device_event: "
+                           "NETDEV_REGISTER dev=%s\n",
+                           dev->name);
+               break;
+       case NETDEV_CHANGEMTU:
+               KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                           "klips_debug:ipsec_device_event: "
+                           "NETDEV_CHANGEMTU dev=%s to mtu=%d\n",
+                           dev->name,
+                           dev->mtu);
+               break;
+       case NETDEV_CHANGEADDR:
+               KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                           "klips_debug:ipsec_device_event: "
+                           "NETDEV_CHANGEADDR dev=%s\n",
+                           dev->name);
+               break;
+       case NETDEV_GOING_DOWN:
+               KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                           "klips_debug:ipsec_device_event: "
+                           "NETDEV_GOING_DOWN dev=%s\n",
+                           dev->name);
+               break;
+       case NETDEV_CHANGENAME:
+               KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                           "klips_debug:ipsec_device_event: "
+                           "NETDEV_CHANGENAME dev=%s\n",
+                           dev->name);
+               break;
+#endif /* NET_21 */
+       default:
+               KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                           "klips_debug:ipsec_device_event: "
+                           "event type %ld unrecognised for dev=%s\n",
+                           event,
+                           dev->name);
+               break;
+       }
+       return NOTIFY_DONE;
+}
+
+/*
+ *     Called when an ipsec tunnel device is initialized.
+ *     The ipsec tunnel device structure is passed to us.
+ */
+ 
+int
+ipsec_tunnel_init(struct net_device *dev)
+{
+       int i;
+
+       KLIPS_PRINT(debug_tunnel,
+                   "klips_debug:ipsec_tunnel_init: "
+                   "allocating %lu bytes initialising device: %s\n",
+                   (unsigned long) sizeof(struct ipsecpriv),
+                   dev->name ? dev->name : "NULL");
+
+       /* Add our tunnel functions to the device */
+       dev->open               = ipsec_tunnel_open;
+       dev->stop               = ipsec_tunnel_close;
+       dev->hard_start_xmit    = ipsec_tunnel_start_xmit;
+       dev->get_stats          = ipsec_tunnel_get_stats;
+
+       dev->priv = kmalloc(sizeof(struct ipsecpriv), GFP_KERNEL);
+       if (dev->priv == NULL)
+               return -ENOMEM;
+       memset((caddr_t)(dev->priv), 0, sizeof(struct ipsecpriv));
+
+       for(i = 0; i < sizeof(zeroes); i++) {
+               ((__u8*)(zeroes))[i] = 0;
+       }
+       
+#ifndef NET_21
+       /* Initialize the tunnel device structure */
+       for (i = 0; i < DEV_NUMBUFFS; i++)
+               skb_queue_head_init(&dev->buffs[i]);
+#endif /* !NET_21 */
+
+       dev->set_multicast_list = NULL;
+       dev->do_ioctl           = ipsec_tunnel_ioctl;
+       dev->hard_header        = NULL;
+       dev->rebuild_header     = NULL;
+       dev->set_mac_address    = NULL;
+#ifndef NET_21
+       dev->header_cache_bind  = NULL;
+#endif /* !NET_21 */
+       dev->header_cache_update= NULL;
+
+#ifdef NET_21
+/*     prv->neigh_setup        = NULL; */
+       dev->neigh_setup        = ipsec_tunnel_neigh_setup_dev;
+#endif /* NET_21 */
+       dev->hard_header_len    = 0;
+       dev->mtu                = 0;
+       dev->addr_len           = 0;
+       dev->type               = ARPHRD_VOID; /* ARPHRD_TUNNEL; */ /* ARPHRD_ETHER; */
+       dev->tx_queue_len       = 10;           /* Small queue */
+       memset((caddr_t)(dev->broadcast),0xFF, ETH_ALEN);       /* what if this is not attached to ethernet? */
+
+       /* New-style flags. */
+       dev->flags              = IFF_NOARP /* 0 */ /* Petr Novak */;
+
+#if 0
+#ifdef NET_21
+       dev_init_buffers(dev);
+#else /* NET_21 */
+       dev->family             = AF_INET;
+       dev->pa_addr            = 0;
+       dev->pa_brdaddr         = 0;
+       dev->pa_mask            = 0;
+       dev->pa_alen            = 4;
+#endif /* NET_21 */
+#endif
+
+       /* We're done.  Have I forgotten anything? */
+       return 0;
+}
+
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+/*  Module specific interface (but it links with the rest of IPSEC)  */
+/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
+
+int
+ipsec_tunnel_probe(struct net_device *dev)
+{
+       ipsec_tunnel_init(dev); 
+       return 0;
+}
+
+struct net_device *ipsecdevices[IPSEC_NUM_IF];
+
+int 
+ipsec_tunnel_init_devices(void)
+{
+       int i;
+       char name[IFNAMSIZ];
+       struct net_device *dev_ipsec;
+       
+       KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                   "klips_debug:ipsec_tunnel_init_devices: "
+                   "creating and registering IPSEC_NUM_IF=%u devices, allocating %lu per device, IFNAMSIZ=%u.\n",
+                   IPSEC_NUM_IF,
+                   (unsigned long) (sizeof(struct net_device) + IFNAMSIZ),
+                   IFNAMSIZ);
+
+       for(i = 0; i < IPSEC_NUM_IF; i++) {
+               sprintf(name, IPSEC_DEV_FORMAT, i);
+               dev_ipsec = (struct net_device*)kmalloc(sizeof(struct net_device), GFP_KERNEL);
+               if (dev_ipsec == NULL) {
+                       KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                                   "klips_debug:ipsec_tunnel_init_devices: "
+                                   "failed to allocate memory for device %s, quitting device init.\n",
+                                   name);
+                       return -ENOMEM;
+               }
+               memset((caddr_t)dev_ipsec, 0, sizeof(struct net_device));
+#ifdef NETDEV_23
+               strncpy(dev_ipsec->name, name, sizeof(dev_ipsec->name));
+#else /* NETDEV_23 */
+               dev_ipsec->name = (char*)kmalloc(IFNAMSIZ, GFP_KERNEL);
+               if (dev_ipsec->name == NULL) {
+                       KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                                   "klips_debug:ipsec_tunnel_init_devices: "
+                                   "failed to allocate memory for device %s name, quitting device init.\n",
+                                   name);
+                       return -ENOMEM;
+               }
+               memset((caddr_t)dev_ipsec->name, 0, IFNAMSIZ);
+               strncpy(dev_ipsec->name, name, IFNAMSIZ);
+#endif /* NETDEV_23 */
+#ifdef HAVE_DEV_NEXT
+               dev_ipsec->next = NULL;
+#endif
+               dev_ipsec->init = &ipsec_tunnel_probe;
+               KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                           "klips_debug:ipsec_tunnel_init_devices: "
+                           "registering device %s\n",
+                           dev_ipsec->name);
+
+               /* reference and hold the device reference */
+               dev_hold(dev_ipsec);
+               ipsecdevices[i]=dev_ipsec;
+
+               if (register_netdev(dev_ipsec) != 0) {
+                       KLIPS_PRINT(1 || debug_tunnel & DB_TN_INIT,
+                                   "klips_debug:ipsec_tunnel_init_devices: "
+                                   "registering device %s failed, quitting device init.\n",
+                                   dev_ipsec->name);
+                       return -EIO;
+               } else {
+                       KLIPS_PRINT(debug_tunnel & DB_TN_INIT,
+                                   "klips_debug:ipsec_tunnel_init_devices: "
+                                   "registering device %s succeeded, continuing...\n",
+                                   dev_ipsec->name);
+               }
+       }
+       return 0;
+}
+
+/* void */
+int
+ipsec_tunnel_cleanup_devices(void)
+{
+       int error = 0;
+       int i;
+       struct net_device *dev_ipsec;
+       
+       for(i = 0; i < IPSEC_NUM_IF; i++) {
+               dev_ipsec = ipsecdevices[i];
+               if(dev_ipsec == NULL) {
+                 continue;
+               }
+
+               /* release reference */
+               ipsecdevices[i]=NULL;
+               ipsec_dev_put(dev_ipsec);
+
+               KLIPS_PRINT(debug_tunnel, "Unregistering %s (refcnt=%d)\n",
+                           dev_ipsec->name,
+                           atomic_read(&dev_ipsec->refcnt));
+               unregister_netdev(dev_ipsec);
+               KLIPS_PRINT(debug_tunnel, "Unregisted %s\n", dev_ipsec->name);
+#ifndef NETDEV_23
+               kfree(dev_ipsec->name);
+               dev_ipsec->name=NULL;
+#endif /* !NETDEV_23 */
+               kfree(dev_ipsec->priv);
+               dev_ipsec->priv=NULL;
+       }
+       return error;
+}
+
+/*
+ * $Log: ipsec_tunnel.c,v $
+ * Revision 1.232.2.7  2007-09-18 18:26:18  paul
+ * Fix mangled preprocessor line in HAVE_INET_SK_SPORT case.
+ *
+ * Revision 1.232.2.6  2007/09/05 02:56:10  paul
+ * Use the new ipsec_kversion macros by David to deal with 2.6.22 kernels.
+ * Fixes based on David McCullough patch.
+ *
+ * Revision 1.232.2.5  2006/10/06 21:39:26  paul
+ * Fix for 2.6.18+ only include linux/config.h if AUTOCONF_INCLUDED is not
+ * set. This is defined through autoconf.h which is included through the
+ * linux kernel build macros.
+ *
+ * Revision 1.232.2.4  2006/03/28 20:58:19  ken
+ * Fix for KLIPS on 2.6.16 - need to include <net/arp.h> now
+ *
+ * Revision 1.232.2.3  2006/02/15 05:14:12  paul
+ * 568: uninitialized struct in ipsec_tunnel.c coud break routing under 2.6 kernels
+ * ipsec_tunnel_send() calls the entry point function of routing subsystem
+ * (ip_route_output_key()) using a not fully initialized struct of type
+ * struct flowi.
+ * This will cause a failure in routing packets through an ipsec interface
+ * when patches for multipath routing from http://www.ssi.bg/~ja/
+ * are applied.
+ *
+ * Revision 1.232.2.2  2005/11/22 04:11:52  ken
+ * Backport fixes for 2.6.14 kernels from HEAD
+ *
+ * Revision 1.232.2.1  2005/09/21 22:57:43  paul
+ * pulled up compile fix for 2.6.13
+ *
+ * Revision 1.232  2005/06/04 16:06:06  mcr
+ *     better patch for nat-t rcv-device code.
+ *
+ * Revision 1.231  2005/05/21 03:28:51  mcr
+ *     make sure that port-500 hole is used for port-4500 as well.
+ *
+ * Revision 1.230  2005/05/11 01:42:04  mcr
+ *     removal of debugging showed useless/wrong variables used.
+ *
+ * Revision 1.229  2005/04/29 05:10:22  mcr
+ *     removed from extraenous includes to make unit testing easier.
+ *
+ * Revision 1.228  2005/01/26 00:50:35  mcr
+ *     adjustment of confusion of CONFIG_IPSEC_NAT vs CONFIG_KLIPS_NAT,
+ *     and make sure that NAT_TRAVERSAL is set as well to match
+ *     userspace compiles of code.
+ *
+ * Revision 1.227  2004/12/10 21:16:08  ken
+ * 64bit fixes from Opteron port of KLIPS 2.6
+ *
+ * Revision 1.226  2004/12/04 07:11:23  mcr
+ *     fix for snmp SIOCPRIVATE use of snmpd.
+ *     http://bugs.xelerance.com/view.php?id=144
+ *
+ * Revision 1.225  2004/12/03 21:25:57  mcr
+ *     compile time fixes for running on 2.6.
+ *     still experimental.
+ *
+ * Revision 1.224  2004/08/14 03:28:24  mcr
+ *     fixed log comment to remove warning about embedded comment.
+ *
+ * Revision 1.223  2004/08/04 15:57:07  mcr
+ *     moved des .h files to include/des/ *
+ *     included 2.6 protocol specific things
+ *     started at NAT-T support, but it will require a kernel patch.
+ *
+ * Revision 1.222  2004/08/03 18:19:08  mcr
+ *     in 2.6, use "net_device" instead of #define device->net_device.
+ *     this probably breaks 2.0 compiles.
+ *
+ * Revision 1.221  2004/07/10 19:11:18  mcr
+ *     CONFIG_IPSEC -> CONFIG_KLIPS.
+ *
+ * Revision 1.220  2004/04/06 02:49:26  mcr
+ *     pullup of algo code from alg-branch.
+ *
+ * Revision 1.219  2004/02/03 03:13:17  mcr
+ *     minor edits for readability, and error reporting.
+ *
+ * Revision 1.218  2004/01/27 20:29:20  mcr
+ *     fix for unregister_netdev() problem for underlying eth0.
+ *
+ * Revision 1.217  2003/12/10 01:14:27  mcr
+ *     NAT-traversal patches to KLIPS.
+ *
+ * Revision 1.216  2003/12/04 23:01:17  mcr
+ *     removed ipsec_netlink.h
+ *
+ * Revision 1.215  2003/12/04 16:35:16  ken
+ * Fix for ATM devices where physdev->hard_header_len *is* correct
+ *
+ * Revision 1.214  2003/11/25 23:52:37  mcr
+ *     fix typo in patch - ixs-> needed.
+ *
+ * Revision 1.213  2003/11/24 18:25:49  mcr
+ *     patch from willy@w.ods.org to fix problems with ATM interfaces.
+ *
+ * Revision 1.212  2003/10/31 02:27:55  mcr
+ *     pulled up port-selector patches and sa_id elimination.
+ *
+ * Revision 1.211.2.2  2003/10/29 01:30:41  mcr
+ *     elimited "struct sa_id".
+ *
+ * Revision 1.211.2.1  2003/09/21 13:59:56  mcr
+ *     pre-liminary X.509 patch - does not yet pass tests.
+ *
+ * Revision 1.211  2003/09/10 16:46:30  mcr
+ *     patches for 2.4 backport/2.6 existence.
+ *
+ * Revision 1.210  2003/07/31 22:47:16  mcr
+ *     preliminary (untested by FS-team) 2.5 patches.
+ *
+ * Revision 1.209  2003/06/22 21:28:43  mcr
+ *     inability to unload module was caused by calls to dev_get
+ *     (ipsec_dev_get), to gather a device from a name. There is
+ *     simply no reason to look the devices up - they should be kept
+ *     in a nice array, ready for use.
+ *
+ * Revision 1.208  2003/06/22 21:25:07  mcr
+ *     all staticly counted ipsecXXX device support removed.
+ *
+ * Revision 1.207  2003/04/02 20:15:37  mcr
+ *     fix for PR#204 - do not clear connection tracking info if we
+ *     the packet is being sent in the clear.
+ *
+ * Revision 1.206  2003/02/12 19:32:51  rgb
+ * Refactored file to:
+ * ipsec_xmit.c
+ * ipsec_xmit.h
+ * ipsec_mast.c
+ *
+ * Revision 1.205  2003/02/06 17:47:00  rgb
+ *
+ * Remove unused ipsec_tunnel_lock() and ipsec_tunnel_unlock() code.
+ * Refactor ipsec_tunnel_start_xmit() further into:
+ *         ipsec_xmit_sanity_check_dev()
+ *         ipsec_xmit_sanity_check_skb()
+ *         ipsec_xmit_strip_hard_header()
+ *         ipsec_xmit_restore_hard_header()
+ *         ipsec_xmit_send()
+ *         ipsec_xmit_cleanup()
+ * and start a skeletal ipsec_mast_start_xmit() .
+ *
+ * Revision 1.204  2003/02/06 06:43:46  rgb
+ *
+ * Refactor ipsec_tunnel_start_xmit, bringing out:
+ *     ipsec_xmit_SAlookup
+ *     ipsec_xmit_encap_once
+ *     ipsec_xmit_encap_bundle
+ *
+ * Revision 1.203  2003/02/06 02:21:34  rgb
+ *
+ * Moved "struct auth_alg" from ipsec_rcv.c to ipsec_ah.h .
+ * Changed "struct ah" to "struct ahhdr" and "struct esp" to "struct esphdr".
+ * Removed "#ifdef INBOUND_POLICY_CHECK_eroute" dead code.
+ *
+ * Revision 1.202  2003/01/03 07:38:01  rgb
+ *
+ * Start to refactor ipsec_tunnel_start_xmit() by putting local variables
+ * into struct ipsec_xmit_state and renaming a few variables to give more
+ * unique or searchable names.
+ *
+ * Revision 1.201  2003/01/03 00:31:28  rgb
+ *
+ * Clean up memset usage, including fixing 2 places where keys were not
+ * properly wiped.
+ *
+ * Revision 1.200  2002/12/06 02:24:02  mcr
+ *     patches for compiling against SUSE 8.1 kernels. Requires
+ *     an additional -DSUSE_LINUX_2_4_19_IS_STUPID.
+ *
+ * Revision 1.199  2002/10/12 23:11:53  dhr
+ *
+ * [KenB + DHR] more 64-bit cleanup
+ *
+ * Revision 1.198  2002/10/05 05:02:58  dhr
+ *
+ * C labels go on statements
+ *
+ * Revision 1.197  2002/09/20 05:01:50  rgb
+ * Added compiler directive to switch on IP options and fix IP options bug.
+ * Make ip->ihl treatment consistent using shifts rather than multiplications.
+ * Check for large enough packet before accessing udp header for IKE bypass.
+ * Added memory allocation debugging.
+ * Fixed potential memory allocation failure-induced oops.
+ *
+ * Revision 1.196  2002/07/24 18:44:54  rgb
+ * Type fiddling to tame ia64 compiler.
+ *
+ * Revision 1.195  2002/07/23 03:36:07  rgb
+ * Fixed 2.2 device initialisation hang.
+ *
+ * Revision 1.194  2002/05/27 21:40:34  rgb
+ * Set unused ipsec devices to ARPHRD_VOID to avoid confusing iproute2.
+ * Cleaned up intermediate step to dynamic device allocation.
+ *
+ * Revision 1.193  2002/05/27 19:31:36  rgb
+ * Convert to dynamic ipsec device allocation.
+ * Remove final vistiges of tdb references via IPSEC_KLIPS1_COMPAT.
+ *
+ * Revision 1.192  2002/05/23 07:14:28  rgb
+ * Added refcount code.
+ * Cleaned up %p variants to 0p%p for test suite cleanup.
+ *
+ * Revision 1.191  2002/05/14 02:34:37  rgb
+ * Change all references to tdb, TDB or Tunnel Descriptor Block to ips,
+ * ipsec_sa or ipsec_sa.
+ *
+ * Revision 1.190  2002/04/24 07:55:32  mcr
+ *     #include patches and Makefiles for post-reorg compilation.
+ *
+ * Revision 1.189  2002/04/24 07:36:32  mcr
+ * Moved from ./klips/net/ipsec/ipsec_tunnel.c,v
+ *
+ * Revision 1.188  2002/04/20 00:12:25  rgb
+ * Added esp IV CBC attack fix, disabled.
+ *
+ * Revision 1.187  2002/03/23 19:55:17  rgb
+ * Fix for 2.2 local IKE fragmentation blackhole.  Still won't work if
+ * iptraf or another pcap app is running.
+ *
+ * Revision 1.186  2002/03/19 03:26:22  rgb
+ * Applied DHR's tunnel patch to streamline IKE/specialSA processing.
+ *
+ * Revision 1.185  2002/02/20 04:13:05  rgb
+ * Send back ICMP_PKT_FILTERED upon %reject.
+ *
+ * Revision 1.184  2002/01/29 17:17:56  mcr
+ *     moved include of ipsec_param.h to after include of linux/kernel.h
+ *     otherwise, it seems that some option that is set in ipsec_param.h
+ *     screws up something subtle in the include path to kernel.h, and
+ *     it complains on the snprintf() prototype.
+ *
+ * Revision 1.183  2002/01/29 04:00:53  mcr
+ *     more excise of kversions.h header.
+ *
+ * Revision 1.182  2002/01/29 02:13:18  mcr
+ *     introduction of ipsec_kversion.h means that include of
+ *     ipsec_param.h must preceed any decisions about what files to
+ *     include to deal with differences in kernel source.
+ *
+ * Revision 1.181  2002/01/07 20:00:33  rgb
+ * Added IKE destination port debugging.
+ *
+ * Revision 1.180  2001/12/21 21:49:54  rgb
+ * Fixed bug as a result of moving IKE bypass above %trap/%hold code.
+ *
+ * Revision 1.179  2001/12/19 21:08:14  rgb
+ * Added transport protocol ports to ipsec_print_ip().
+ * Update eroute info for non-SA targets.
+ * Added obey DF code disabled.
+ * Fixed formatting bugs in ipsec_tunnel_hard_header().
+ *
+ * Revision 1.178  2001/12/05 09:36:10  rgb
+ * Moved the UDP/500 IKE check just above the %hold/%trap checks to avoid
+ * IKE packets being stolen by the %hold (and returned to the sending KMd
+ * in an ACQUIRE, ironically  ;-).
+ *
+ * Revision 1.177  2001/11/26 09:23:50  rgb
+ * Merge MCR's ipsec_sa, eroute, proc and struct lifetime changes.
+ *
+ * Revision 1.170.2.1  2001/09/25 02:28:27  mcr
+ *     struct tdb -> struct ipsec_sa.
+ *     lifetime checks moved to common routines.
+ *     cleaned up includes.
+ *
+ * Revision 1.170.2.2  2001/10/22 21:08:01  mcr
+ *     include des.h, removed phony prototypes and fixed calling
+ *     conventions to match real prototypes.
+ *
+ * Revision 1.176  2001/11/09 18:32:31  rgb
+ * Added Hans Schultz' fragmented UDP/500 IKE socket port selector.
+ *
+ * Revision 1.175  2001/11/06 20:47:00  rgb
+ * Added Eric Espie's TRAPSUBNET fix, minus spin-lock-bh dabbling.
+ *
+ * Revision 1.174  2001/11/06 19:50:43  rgb
+ * Moved IP_SEND, ICMP_SEND, DEV_QUEUE_XMIT macros to ipsec_tunnel.h for
+ * use also by pfkey_v2_parser.c
+ *
+ * Revision 1.173  2001/10/29 21:53:44  henry
+ * tone down the device-down message slightly, until we can make it smarter
+ *
+ * Revision 1.172  2001/10/26 04:59:37  rgb
+ * Added a critical level syslog message if an ipsec device goes down.
+ *
+ * Revision 1.171  2001/10/18 04:45:21  rgb
+ * 2.4.9 kernel deprecates linux/malloc.h in favour of linux/slab.h,
+ * lib/freeswan.h version macros moved to lib/kversions.h.
+ * Other compiler directive cleanups.
+ *
+ * Revision 1.170  2001/09/25 00:09:50  rgb
+ * Added NetCelo's TRAPSUBNET code to convert a new type TRAPSUBNET into a
+ * HOLD.
+ *
+ * Revision 1.169  2001/09/15 16:24:05  rgb
+ * Re-inject first and last HOLD packet when an eroute REPLACE is done.
+ *
+ * Revision 1.168  2001/09/14 16:58:37  rgb
+ * Added support for storing the first and last packets through a HOLD.
+ *
+ * Revision 1.167  2001/09/08 21:13:33  rgb
+ * Added pfkey ident extension support for ISAKMPd. (NetCelo)
+ *
+ * Revision 1.166  2001/08/27 19:47:59  rgb
+ * Clear tdb  before usage.
+ * Added comment: clear IF before calling routing?
+ *
+ * Revision 1.165  2001/07/03 01:23:53  rgb
+ * Send back ICMP iff DF set, !ICMP, offset==0, sysctl_icmp, iph->tot_len >
+ * emtu, and don't drop.
+ *
+ * Revision 1.164  2001/06/14 19:35:10  rgb
+ * Update copyright date.
+ *
+ * Revision 1.163  2001/06/06 20:28:51  rgb
+ * Added sanity checks for NULL skbs and devices.
+ * Added more debugging output to various functions.
+ * Removed redundant dev->priv argument to ipsec_tunnel_{at,de}tach().
+ * Renamed ipsec_tunnel_attach() virtual and physical device arguments.
+ * Corrected neigh_setup() device function assignment.
+ * Keep valid pointers to ipsec_tunnel_*() on detach.
+ * Set dev->type to the originally-initiallised value.
+ *
+ * Revision 1.162  2001/06/01 07:28:04  rgb
+ * Added sanity checks for detached devices.  Don't down virtual devices
+ * to prevent packets going out in the clear if the detached device comes
+ * back up.
+ *
+ * Revision 1.161  2001/05/30 08:14:52  rgb
+ * Removed vestiges of esp-null transforms.
+ * NetDev Notifier instrumentation to track down disappearing devices.
+ *
+ * Revision 1.160  2001/05/29 05:15:12  rgb
+ * Added SS' PMTU patch which notifies sender if packet doesn't fit
+ * physical MTU (if it wasn't ICMP) and then drops it.
+ *
+ * Revision 1.159  2001/05/27 06:12:12  rgb
+ * Added structures for pid, packet count and last access time to eroute.
+ * Added packet count to beginning of /proc/net/ipsec_eroute.
+ *
+ * Revision 1.158  2001/05/24 05:39:33  rgb
+ * Applied source zeroing to 2.2 ip_route_output() call as well to enable
+ * PASS eroutes for opportunism.
+ *
+ * Revision 1.157  2001/05/23 22:35:28  rgb
+ * 2.4 source override simplification.
+ *
+ * Revision 1.156  2001/05/23 21:41:31  rgb
+ * Added error return code printing on ip_route_output().
+ *
+ * Revision 1.155  2001/05/23 05:09:13  rgb
+ * Fixed incorrect ip_route_output() failure message.
+ *
+ * Revision 1.154  2001/05/21 14:53:31  rgb
+ * Added debug statement for case when ip_route_output() fails, causing
+ * packet to be dropped, but log looked ok.
+ *
+ * Revision 1.153  2001/05/19 02:37:54  rgb
+ * Fixed missing comment termination.
+ *
+ * Revision 1.152  2001/05/19 02:35:50  rgb
+ * Debug code optimisation for non-debug speed.
+ * Kernel version compiler define comments.
+ * 2.2 and 2.4 kernel ip_send device and ip debug output added.
+ *
+ * Revision 1.151  2001/05/18 16:17:35  rgb
+ * Changed reference from "magic" to "shunt" SAs.
+ *
+ * Revision 1.150  2001/05/18 16:12:19  rgb
+ * Changed UDP/500 bypass test from 3 nested ifs to one anded if.
+ *
+ * Revision 1.149  2001/05/16 04:39:33  rgb
+ * Add default == eroute.dest to IKE bypass conditions for magic eroutes.
+ *
+ * Revision 1.148  2001/05/05 03:31:41  rgb
+ * IP frag debugging updates and enhancements.
+ *
+ * Revision 1.147  2001/05/03 19:41:40  rgb
+ * Added SS' skb_cow fix for 2.4.4.
+ *
+ * Revision 1.146  2001/04/30 19:28:16  rgb
+ * Update for 2.4.4.  ip_select_ident() now has 3 args.
+ *
+ * Revision 1.145  2001/04/23 14:56:10  rgb
+ * Added spin_lock() check to prevent double-locking for multiple
+ * transforms and hence kernel lock-ups with SMP kernels.
+ *
+ * Revision 1.144  2001/04/21 23:04:45  rgb
+ * Define out skb->used for 2.4 kernels.
+ * Check if soft expire has already been sent before sending another to
+ * prevent ACQUIRE flooding.
+ *
+ * Revision 1.143  2001/03/16 07:37:21  rgb
+ * Added comments to all #endifs.
+ *
+ * Revision 1.142  2001/02/28 05:03:27  rgb
+ * Clean up and rationalise startup messages.
+ *
+ * Revision 1.141  2001/02/27 22:24:54  rgb
+ * Re-formatting debug output (line-splitting, joining, 1arg/line).
+ * Check for satoa() return codes.
+ *
+ * Revision 1.140  2001/02/27 06:40:12  rgb
+ * Fixed TRAP->HOLD eroute byte order.
+ *
+ * Revision 1.139  2001/02/26 20:38:59  rgb
+ * Added compiler defines for 2.4.x-specific code.
+ *
+ * Revision 1.138  2001/02/26 19:57:27  rgb
+ * Implement magic SAs %drop, %reject, %trap, %hold, %pass as part
+ * of the new SPD and to support opportunistic.
+ * Drop sysctl_ipsec_{no_eroute_pass,opportunistic}, replaced by magic SAs.
+ *
+ * Revision 1.137  2001/02/19 22:29:49  rgb
+ * Fixes for presence of active ipv6 segments which share ipsec physical
+ * device (gg).
+ *
+ * Revision 1.136  2001/01/29 22:30:38  rgb
+ * Fixed minor acquire debug printing bug.
+ *
+ * Revision 1.135  2001/01/29 22:19:45  rgb
+ * Zero source address for 2.4 bypass route lookup.
+ *
+ * Revision 1.134  2001/01/23 20:19:49  rgb
+ * 2.4 fix to remove removed is_clone member.
+ *
+ * Revision 1.133  2000/12/09 22:08:35  rgb
+ * Fix NET_23 bug, should be NETDEV_23.
+ *
+ * Revision 1.132  2000/12/01 06:54:50  rgb
+ * Fix for new 2.4 IP TTL default variable name.
+ *
+ * Revision 1.131  2000/11/09 20:52:15  rgb
+ * More spinlock shuffling, locking earlier and unlocking later in rcv to
+ * include ipcomp and prevent races, renaming some tdb variables that got
+ * forgotten, moving some unlocks to include tdbs and adding a missing
+ * unlock.  Thanks to Svenning for some of these.
+ *
+ * Revision 1.130  2000/11/09 20:11:22  rgb
+ * Minor shuffles to fix non-standard kernel config option selection.
+ *
+ * Revision 1.129  2000/11/06 04:32:49  rgb
+ * Clean up debug printing.
+ * Copy skb->protocol for all kernel versions.
+ * Ditched spin_lock_irqsave in favour of spin_lock.
+ * Disabled TTL decrement, done in ip_forward.
+ * Added debug printing before pfkey_acquire().
+ * Fixed printk-deltdbchain-spin_lock races (Svenning).
+ * Use defaultTTL for 2.1+ kernels.
+ * Add Svenning's adaptive content compression.
+ * Fix up debug display arguments.
+ *
+ * Revision 1.128  2000/09/28 00:58:57  rgb
+ * Moved the IKE passthrough check after the eroute lookup so we can pass
+ * IKE through intermediate tunnels.
+ *
+ * Revision 1.127  2000/09/22 17:52:11  rgb
+ * Fixed misleading ipcomp debug output.
+ *
+ * Revision 1.126  2000/09/22 04:22:56  rgb
+ * Fixed dumb spi->cpi conversion error.
+ *
+ * Revision 1.125  2000/09/21 04:34:48  rgb
+ * A few debug-specific things should be hidden under
+ * CONFIG_IPSEC_DEBUG.(MB)
+ * Improved ip_send() error handling.(MB)
+ *
+ * Revision 1.124  2000/09/21 03:40:58  rgb
+ * Added more debugging to try and track down the cpi outward copy problem.
+ *
+ * Revision 1.123  2000/09/19 07:08:49  rgb
+ * Added debugging to outgoing compression report.
+ *
+ * Revision 1.122  2000/09/18 19:21:26  henry
+ * RGB-supplied fix for RH5.2 problem
+ *
+ * Revision 1.121  2000/09/17 21:05:09  rgb
+ * Added tdb to skb_compress call to write in cpi.
+ *
+ * Revision 1.120  2000/09/17 16:57:16  rgb
+ * Added Svenning's patch to remove restriction of ipcomp to innermost
+ * transform.
+ *
+ * Revision 1.119  2000/09/15 11:37:01  rgb
+ * Merge in heavily modified Svenning Soerensen's <svenning@post5.tele.dk>
+ * IPCOMP zlib deflate code.
+ *
+ * Revision 1.118  2000/09/15 04:57:16  rgb
+ * Moved debug output after sanity check.
+ * Added tos copy sysctl.
+ *
+ * Revision 1.117  2000/09/12 03:22:51  rgb
+ * Converted ipsec_icmp, no_eroute_pass, opportunistic and #if0 debugs to
+ * sysctl.
+ *
+ * Revision 1.116  2000/09/08 19:18:19  rgb
+ * Change references from DEBUG_IPSEC to CONFIG_IPSEC_DEBUG.
+ * Added outgoing opportunistic hook, ifdef'ed out.
+ *
+ * Revision 1.115  2000/08/30 05:27:29  rgb
+ * Removed all the rest of the references to tdb_spi, tdb_proto, tdb_dst.
+ * Kill remainder of tdb_xform, tdb_xdata, xformsw.
+ *
+ * Revision 1.114  2000/08/28 18:15:46  rgb
+ * Added MB's nf-debug reset patch.
+ *
+ * Revision 1.113  2000/08/27 02:26:40  rgb
+ * Send all no-eroute-bypass, pluto-bypass and passthrough packets through
+ * fragmentation machinery for 2.0, 2.2 and 2.4 kernels.
+ *
+ * Revision 1.112  2000/08/20 21:37:33  rgb
+ * Activated pfkey_expire() calls.
+ * Added a hard/soft expiry parameter to pfkey_expire(). (Momchil)
+ * Re-arranged the order of soft and hard expiry to conform to RFC2367.
+ * Clean up references to CONFIG_IPSEC_PFKEYv2.
+ *
+ * Revision 1.111  2000/08/01 14:51:51  rgb
+ * Removed _all_ remaining traces of DES.
+ *
+ * Revision 1.110  2000/07/28 14:58:31  rgb
+ * Changed kfree_s to kfree, eliminating extra arg to fix 2.4.0-test5.
+ *
+ * Revision 1.109  2000/07/28 13:50:54  rgb
+ * Changed enet_statistics to net_device_stats and added back compatibility
+ * for pre-2.1.19.
+ *
+ * Revision 1.108  2000/05/16 03:03:11  rgb
+ * Updates for 2.3.99pre8 from MB.
+ *
+ * Revision 1.107  2000/05/10 23:08:21  rgb
+ * Print a debug warning about bogus packets received by the outgoing
+ * processing machinery only when klipsdebug is not set to none.
+ * Comment out the device initialisation informational messages.
+ *
+ * Revision 1.106  2000/05/10 19:17:14  rgb
+ * Define an IP_SEND macro, intending to have all packet passthroughs
+ * use fragmentation.  This didn't quite work, but is a step in the
+ * right direction.
+ * Added buffer allocation debugging statements.
+ * Added configure option to shut off no eroute passthrough.
+ * Only check usetime against soft and hard limits if the tdb has been
+ * used.
+ * Cast output of ntohl so that the broken prototype doesn't make our
+ * compile noisy.
+ *
+ * Revision 1.105  2000/03/22 16:15:37  rgb
+ * Fixed renaming of dev_get (MB).
+ *
+ * Revision 1.104  2000/03/16 14:04:15  rgb
+ * Indented headers for readability.
+ * Fixed debug scope to enable compilation with debug off.
+ * Added macros for ip_chk_addr and IS_MYADDR for identifying self.
+ *
+ * Revision 1.103  2000/03/16 07:11:07  rgb
+ * Hardcode PF_KEYv2 support.
+ * Fixed bug which allowed UDP/500 packet from another machine
+ * through in the clear.
+ * Added disabled skb->protocol fix for ISDN/ASYNC PPP from Matjaz Godec.
+ *
+ * Revision 1.102  2000/03/14 12:26:59  rgb
+ * Added skb->nfct support for clearing netfilter conntrack bits (MB).
+ *
+ * Revision 1.101  2000/02/14 21:05:22  rgb
+ * Added MB's netif_queue fix for kernels 2.3.43+.
+ *
+ * Revision 1.100  2000/01/26 10:04:57  rgb
+ * Fixed noisy 2.0 printk arguments.
+ *
+ * Revision 1.99  2000/01/21 06:16:25  rgb
+ * Added sanity checks on skb_push(), skb_pull() to prevent panics.
+ * Switched to AF_ENCAP macro.
+ * Shortened debug output per packet and re-arranging debug_tunnel
+ * bitmap flags, while retaining necessary information to avoid
+ * trampling the kernel print ring buffer.
+ * Reformatted recursion switch code.
+ * Changed all references to tdb_proto to tdb_said.proto for clarity.
+ *
+ * Revision 1.98  2000/01/13 08:09:31  rgb
+ * Shuffled debug_tunnel switches to focus output.
+ * Fixed outgoing recursion bug, limiting to recursing only if the remote
+ * SG changes and if it is valid, ie. not passthrough.
+ * Clarified a number of debug messages.
+ *
+ * Revision 1.97  2000/01/10 16:37:16  rgb
+ * MB support for new ip_select_ident() upon disappearance of
+ * ip_id_count in 2.3.36+.
+ *
+ * Revision 1.96  1999/12/31 14:59:08  rgb
+ * MB fix to use new skb_copy_expand in kernel 2.3.35.
+ *
+ * Revision 1.95  1999/12/29 21:15:44  rgb
+ * Fix tncfg to aliased device bug.
+ *
+ * Revision 1.94  1999/12/22 04:26:06  rgb
+ * Converted all 'static' functions to 'DEBUG_NO_STATIC' to enable
+ * debugging by providing external labels to all functions with debugging
+ * turned on.
+ *
+ * Revision 1.93  1999/12/13 13:30:14  rgb
+ * Changed MTU reports and HW address reporting back to debug only.
+ *
+ * Revision 1.92  1999/12/07 18:57:56  rgb
+ * Fix PFKEY symbol compile error (SADB_*) without pfkey enabled.
+ *
+ * Revision 1.91  1999/12/01 22:15:36  rgb
+ * Add checks for LARVAL and DEAD SAs.
+ * Change state of SA from MATURE to DYING when a soft lifetime is
+ * reached and print debug warning.
+ *
+ * Revision 1.90  1999/11/23 23:04:04  rgb
+ * Use provided macro ADDRTOA_BUF instead of hardcoded value.
+ * Sort out pfkey and freeswan headers, putting them in a library path.
+ *
+ * Revision 1.89  1999/11/18 18:50:59  rgb
+ * Changed all device registrations for static linking to
+ * dynamic to reduce the number and size of patches.
+ *
+ * Revision 1.88  1999/11/18 04:09:19  rgb
+ * Replaced all kernel version macros to shorter, readable form.
+ *
+ * Revision 1.87  1999/11/17 15:53:40  rgb
+ * Changed all occurrences of #include "../../../lib/freeswan.h"
+ * to #include <freeswan.h> which works due to -Ilibfreeswan in the
+ * klips/net/ipsec/Makefile.
+ *
+ * Revision 1.86  1999/10/16 18:25:37  rgb
+ * Moved SA lifetime expiry checks before packet processing.
+ * Expire SA on replay counter rollover.
+ *
+ * Revision 1.85  1999/10/16 04:24:31  rgb
+ * Add stats for time since last packet.
+ *
+ * Revision 1.84  1999/10/16 00:30:47  rgb
+ * Added SA lifetime counting.
+ *
+ * Revision 1.83  1999/10/15 22:15:57  rgb
+ * Clean out cruft.
+ * Add debugging.
+ *
+ * Revision 1.82  1999/10/08 18:26:19  rgb
+ * Fix 2.0.3x outgoing fragmented packet memory leak.
+ *
+ * Revision 1.81  1999/10/05 02:38:54  rgb
+ * Lower the default mtu of virtual devices to 16260.
+ *
+ * Revision 1.80  1999/10/03 18:56:41  rgb
+ * Spinlock support for 2.3.xx.
+ * Don't forget to undo spinlocks on error!
+ * Check for valid eroute before copying the structure.
+ *
+ * Revision 1.79  1999/10/01 15:44:53  rgb
+ * Move spinlock header include to 2.1> scope.
+ *
+ * Revision 1.78  1999/10/01 00:02:43  rgb
+ * Added tdb structure locking.
+ * Added eroute structure locking.
+ *
+ * Revision 1.77  1999/09/30 02:52:29  rgb
+ * Add Marc Boucher's Copy-On-Write code (same as ipsec_rcv.c).
+ *
+ * Revision 1.76  1999/09/25 19:31:27  rgb
+ * Refine MSS hack to affect SYN, but not SYN+ACK packets.
+ *
+ * Revision 1.75  1999/09/24 22:52:38  rgb
+ * Fix two things broken in 2.0.38 by trying to fix network notifiers.
+ *
+ * Revision 1.74  1999/09/24 00:30:37  rgb
+ * Add test for changed source as well as destination to check for
+ * recursion.
+ *
+ * Revision 1.73  1999/09/23 20:52:24  rgb
+ * Add James Morris' MSS hack patch, disabled.
+ *
+ * Revision 1.72  1999/09/23 20:22:40  rgb
+ * Enable, tidy and fix network notifier code.
+ *
+ * Revision 1.71  1999/09/23 18:09:05  rgb
+ * Clean up 2.2.x fragmenting traces.
+ * Disable dev->type switching, forcing ARPHRD_TUNNEL.
+ *
+ * Revision 1.70  1999/09/22 14:14:24  rgb
+ * Add sanity checks for revectored calls to prevent calling a downed I/F.
+ *
+ * Revision 1.69  1999/09/21 15:00:57  rgb
+ * Add Marc Boucher's packet size check.
+ * Flesh out network device notifier code.
+ *
+ * Revision 1.68  1999/09/18 11:39:57  rgb
+ * Start to add (disabled) netdevice notifier code.
+ *
+ * Revision 1.67  1999/09/17 23:44:40  rgb
+ * Add a comment warning potential code hackers to stay away from mac.raw.
+ *
+ * Revision 1.66  1999/09/17 18:04:02  rgb
+ * Add fix for unpredictable hard_header_len for ISDN folks (thanks MB).
+ * Ditch TTL decrement in 2.2 (MB).
+ *
+ * Revision 1.65  1999/09/15 23:15:35  henry
+ * Marc Boucher's PPP fixes
+ *
+ * Revision 1.64  1999/09/07 13:40:53  rgb
+ * Ditch unreliable references to skb->mac.raw.
+ *
+ * Revision 1.63  1999/08/28 11:33:09  rgb
+ * Check for null skb->mac pointer.
+ *
+ * Revision 1.62  1999/08/28 02:02:30  rgb
+ * Add Marc Boucher's fix for properly dealing with skb->sk.
+ *
+ * Revision 1.61  1999/08/27 05:23:05  rgb
+ * Clean up skb->data/raw/nh/h manipulation.
+ * Add Marc Boucher's mods to aid tcpdump.
+ * Add sanity checks to skb->raw/nh/h pointer copies in skb_copy_expand.
+ * Re-order hard_header stripping -- might be able to remove it...
+ *
+ * Revision 1.60  1999/08/26 20:01:02  rgb
+ * Tidy up compiler directives and macros.
+ * Re-enable ICMP for tunnels where inner_dst !=  outer_dst.
+ * Remove unnecessary skb->dev = physdev assignment affecting 2.2.x.
+ *
+ * Revision 1.59  1999/08/25 15:44:41  rgb
+ * Clean up from 2.2.x instrumenting for compilation under 2.0.36.
+ *
+ * Revision 1.58  1999/08/25 15:00:54  rgb
+ * Add dst cache code for 2.2.xx.
+ * Add sanity check for skb packet header pointers.
+ * Add/modify debugging instrumentation to *_start_xmit, *_hard_header and
+ * *_rebuild_header.
+ * Add neigh_* cache code.
+ * Change dev->type back to ARPHRD_TUNNEL.
+ *
+ * Revision 1.57  1999/08/17 21:50:23  rgb
+ * Fixed minor debug output bugs.
+ * Regrouped error recovery exit code.
+ * Added compiler directives to remove unwanted code and symbols.
+ * Shut off ICMP messages: to be refined to only send ICMP to remote systems.
+ * Add debugging code for output function addresses.
+ * Fix minor bug in (possibly unused) header_cache_bind function.
+ * Add device neighbour caching code.
+ * Change dev->type from ARPHRD_TUNNEL to physdev->type.
+ *
+ * Revision 1.56  1999/08/03 17:22:56  rgb
+ * Debug output clarification using KERN_* macros.  Other inactive changes
+ * added.
+ *
+ * Revision 1.55  1999/08/03 16:58:46  rgb
+ * Fix skb_copy_expand size bug.  Was getting incorrect size.
+ *
+ * Revision 1.54  1999/07/14 19:32:38  rgb
+ * Fix oversize packet crash and ssh stalling in 2.2.x kernels.
+ *
+ * Revision 1.53  1999/06/10 15:44:02  rgb
+ * Minor reformatting and clean-up.
+ *
+ * Revision 1.52  1999/05/09 03:25:36  rgb
+ * Fix bug introduced by 2.2 quick-and-dirty patch.
+ *
+ * Revision 1.51  1999/05/08 21:24:59  rgb
+ * Add casting to silence the 2.2.x compile.
+ *
+ * Revision 1.50  1999/05/05 22:02:32  rgb
+ * Add a quick and dirty port to 2.2 kernels by Marc Boucher <marc@mbsi.ca>.
+ *
+ * Revision 1.49  1999/04/29 15:18:52  rgb
+ * Change gettdb parameter to a pointer to reduce stack loading and
+ * facilitate parameter sanity checking.
+ * Fix undetected bug that might have tried to access a null pointer.
+ * Eliminate unnessessary usage of tdb_xform member to further switch
+ * away from the transform switch to the algorithm switch.
+ * Add return values to init and cleanup functions.
+ *
+ * Revision 1.48  1999/04/16 15:38:00  rgb
+ * Minor rearrangement of freeing code to avoid memory leaks with impossible or
+ * rare situations.
+ *
+ * Revision 1.47  1999/04/15 15:37:25  rgb
+ * Forward check changes from POST1_00 branch.
+ *
+ * Revision 1.32.2.4  1999/04/13 21:00:18  rgb
+ * Ditch 'things I wish I had known before...'.
+ *
+ * Revision 1.32.2.3  1999/04/13 20:34:38  rgb
+ * Free skb after fragmentation.
+ * Use stats more effectively.
+ * Add I/F to mtu notch-down reporting.
+ *
+ * Revision 1.32.2.2  1999/04/02 04:26:14  rgb
+ * Backcheck from HEAD, pre1.0.
+ *
+ * Revision 1.46  1999/04/11 00:29:00  henry
+ * GPL boilerplate
+ *
+ * Revision 1.45  1999/04/07 15:42:01  rgb
+ * Fix mtu/ping bug AGAIN!
+ *
+ * Revision 1.44  1999/04/06 04:54:27  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.43  1999/04/04 03:57:07  rgb
+ * ip_fragment() doesn't free the supplied skb.  Freed.
+ *
+ * Revision 1.42  1999/04/01 23:27:15  rgb
+ * Preload size of virtual mtu.
+ *
+ * Revision 1.41  1999/04/01 09:31:23  rgb
+ * Invert meaning of ICMP PMTUD config option and clarify.
+ * Code clean-up.
+ *
+ * Revision 1.40  1999/04/01 04:37:17  rgb
+ * SSH stalling bug fix.
+ *
+ * Revision 1.39  1999/03/31 23:44:28  rgb
+ * Don't send ICMP on DF and frag_off.
+ *
+ * Revision 1.38  1999/03/31 15:20:10  rgb
+ * Quiet down debugging.
+ *
+ * Revision 1.37  1999/03/31 08:30:31  rgb
+ * Add switch to shut off ICMP PMTUD packets.
+ *
+ * Revision 1.36  1999/03/31 05:44:47  rgb
+ * Keep PMTU reduction private.
+ *
+ * Revision 1.35  1999/03/27 15:13:02  rgb
+ * PMTU/fragmentation bug fix.
+ *
+ * Revision 1.34  1999/03/17 21:19:26  rgb
+ * Fix kmalloc nonatomic bug.
+ *
+ * Revision 1.33  1999/03/17 15:38:42  rgb
+ * Code clean-up.
+ * ESP_NULL IV bug fix.
+ *
+ * Revision 1.32  1999/03/01 20:44:25  rgb
+ * Code clean-up.
+ * Memory leak bug fix.
+ *
+ * Revision 1.31  1999/02/27 00:02:09  rgb
+ * Tune to report the MTU reduction once, rather than after every recursion
+ * through the encapsulating code, preventing tcp stream stalling.
+ *
+ * Revision 1.30  1999/02/24 20:21:01  rgb
+ * Reformat debug printk's.
+ * Fix recursive encapsulation, dynamic MTU bugs and add debugging code.
+ * Clean-up.
+ *
+ * Revision 1.29  1999/02/22 17:08:14  rgb
+ * Fix recursive encapsulation code.
+ *
+ * Revision 1.28  1999/02/19 18:27:02  rgb
+ * Improve DF, fragmentation and PMTU behaviour and add dynamic MTU discovery.
+ *
+ * Revision 1.27  1999/02/17 16:51:37  rgb
+ * Clean out unused cruft.
+ * Temporarily tone down volume of debug output.
+ * Temporarily shut off fragment rejection.
+ * Disabled temporary failed recursive encapsulation loop.
+ *
+ * Revision 1.26  1999/02/12 21:21:26  rgb
+ * Move KLIPS_PRINT to ipsec_netlink.h for accessibility.
+ *
+ * Revision 1.25  1999/02/11 19:38:27  rgb
+ * More clean-up.
+ * Add sanity checking for skb_copy_expand() to prevent kernel panics on
+ * skb_put() values out of range.
+ * Fix head/tailroom calculation causing skb_put() out-of-range values.
+ * Fix return values to prevent 'nonatomic alloc_skb' warnings.
+ * Allocate new skb iff needed.
+ * Added more debug statements.
+ * Make headroom depend on structure, not hard-coded values.
+ *
+ * Revision 1.24  1999/02/10 23:20:33  rgb
+ * Shut up annoying 'statement has no effect' compiler warnings with
+ * debugging compiled out.
+ *
+ * Revision 1.23  1999/02/10 22:36:30  rgb
+ * Clean-up obsolete, unused and messy code.
+ * Converted most IPSEC_DEBUG statements to KLIPS_PRINT macros.
+ * Rename ipsec_tunnel_do_xmit to ipsec_tunnel_start_xmit and eliminated
+ * original ipsec_tunnel_start_xmit.
+ * Send all packet with different inner and outer destinations directly to
+ * the attached physical device, rather than back through ip_forward,
+ * preventing disappearing routes problems.
+ * Do sanity checking before investing too much CPU in allocating new
+ * structures.
+ * Fail on IP header options: We cannot process them yet.
+ * Add some helpful comments.
+ * Use virtual device for parameters instead of physical device.
+ *
+ * Revision 1.22  1999/02/10 03:03:02  rgb
+ * Duh.  Fixed the TTL bug: forgot to update the checksum.
+ *
+ * Revision 1.21  1999/02/09 23:17:53  rgb
+ * Add structure members to ipsec_print_ip debug function.
+ * Temporarily fix TTL bug preventing tunnel mode from functioning.
+ *
+ * Revision 1.20  1999/02/09 00:14:25  rgb
+ * Add KLIPSPRINT macro.  (Not used yet, though.)
+ * Delete old ip_tunnel code (BADCODE).
+ * Decrement TTL in outgoing packet.
+ * Set TTL on new IPIP_TUNNEL to default, not existing packet TTL.
+ * Delete ethernet only feature and fix hard-coded hard_header_len.
+ *
+ * Revision 1.19  1999/01/29 17:56:22  rgb
+ * 64-bit re-fix submitted by Peter Onion.
+ *
+ * Revision 1.18  1999/01/28 22:43:24  rgb
+ * Fixed bug in ipsec_print_ip that caused an OOPS, found by P.Onion.
+ *
+ * Revision 1.17  1999/01/26 02:08:16  rgb
+ * Removed CONFIG_IPSEC_ALGO_SWITCH macro.
+ * Removed dead code.
+ *
+ * Revision 1.16  1999/01/22 06:25:26  rgb
+ * Cruft clean-out.
+ * Added algorithm switch code.
+ * 64-bit clean-up.
+ * Passthrough on IPIP protocol, spi 0x0 fix.
+ * Enhanced debugging.
+ *
+ * Revision 1.15  1998/12/01 13:22:04  rgb
+ * Added support for debug printing of version info.
+ *
+ * Revision 1.14  1998/11/30 13:22:55  rgb
+ * Rationalised all the klips kernel file headers.  They are much shorter
+ * now and won't conflict under RH5.2.
+ *
+ * Revision 1.13  1998/11/17 21:13:52  rgb
+ * Put IKE port bypass debug output in user-switched debug statements.
+ *
+ * Revision 1.12  1998/11/13 13:20:25  rgb
+ * Fixed ntohs bug in udp/500 hole for IKE.
+ *
+ * Revision 1.11  1998/11/10 08:01:19  rgb
+ * Kill tcp/500 hole,  keep udp/500 hole.
+ *
+ * Revision 1.10  1998/11/09 21:29:26  rgb
+ * If no eroute is found, discard packet and incr. tx_error.
+ *
+ * Revision 1.9  1998/10/31 06:50:00  rgb
+ * Add tcp/udp/500 bypass.
+ * Fixed up comments in #endif directives.
+ *
+ * Revision 1.8  1998/10/27 00:34:31  rgb
+ * Reformat debug output of IP headers.
+ * Newlines added before calls to ipsec_print_ip.
+ *
+ * Revision 1.7  1998/10/19 14:44:28  rgb
+ * Added inclusion of freeswan.h.
+ * sa_id structure implemented and used: now includes protocol.
+ *
+ * Revision 1.6  1998/10/09 04:31:35  rgb
+ * Added 'klips_debug' prefix to all klips printk debug statements.
+ *
+ * Revision 1.5  1998/08/28 03:09:51  rgb
+ * Prevent kernel log spam with default route through ipsec.
+ *
+ * Revision 1.4  1998/08/05 22:23:09  rgb
+ * Change setdev return code to ENXIO for a non-existant physical device.
+ *
+ * Revision 1.3  1998/07/29 20:41:11  rgb
+ * Add ipsec_tunnel_clear to clear all tunnel attachments.
+ *
+ * Revision 1.2  1998/06/25 20:00:33  rgb
+ * Clean up #endif comments.
+ * Rename dev_ipsec to dev_ipsec0 for consistency.
+ * Document ipsec device fields.
+ * Make ipsec_tunnel_probe visible from rest of kernel for static linking.
+ * Get debugging report for *every* ipsec device initialisation.
+ * Comment out redundant code.
+ *
+ * Revision 1.1  1998/06/18 21:27:50  henry
+ * move sources from klips/src to klips/net/ipsec, to keep stupid
+ * kernel-build scripts happier in the presence of symlinks
+ *
+ * Revision 1.8  1998/06/14 23:49:40  rgb
+ * Clarify version reporting on module loading.
+ *
+ * Revision 1.7  1998/05/27 23:19:20  rgb
+ * Added version reporting.
+ *
+ * Revision 1.6  1998/05/18 21:56:23  rgb
+ * Clean up for numerical consistency of output and cleaning up debug code.
+ *
+ * Revision 1.5  1998/05/12 02:44:23  rgb
+ * Clarifying 'no e-route to host' message.
+ *
+ * Revision 1.4  1998/04/30 15:34:35  rgb
+ * Enclosed most remaining debugging statements in #ifdef's to make it quieter.
+ *
+ * Revision 1.3  1998/04/21 21:28:54  rgb
+ * Rearrange debug switches to change on the fly debug output from user
+ * space.  Only kernel changes checked in at this time.  radij.c was also
+ * changed to temporarily remove buggy debugging code in rj_delete causing
+ * an OOPS and hence, netlink device open errors.
+ *
+ * Revision 1.2  1998/04/12 22:03:24  rgb
+ * Updated ESP-3DES-HMAC-MD5-96,
+ *     ESP-DES-HMAC-MD5-96,
+ *     AH-HMAC-MD5-96,
+ *     AH-HMAC-SHA1-96 since Henry started freeswan cvs repository
+ * from old standards (RFC182[5-9] to new (as of March 1998) drafts.
+ *
+ * Fixed eroute references in /proc/net/ipsec*.
+ *
+ * Started to patch module unloading memory leaks in ipsec_netlink and
+ * radij tree unloading.
+ *
+ * Revision 1.1  1998/04/09 03:06:12  henry
+ * sources moved up from linux/net/ipsec
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:04  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.5  1997/06/03 04:24:48  ji
+ * Added transport mode.
+ * Changed the way routing is done.
+ * Lots of bug fixes.
+ *
+ * Revision 0.4  1997/01/15 01:28:15  ji
+ * No changes.
+ *
+ * Revision 0.3  1996/11/20 14:39:04  ji
+ * Minor cleanups.
+ * Rationalized debugging code.
+ *
+ * Revision 0.2  1996/11/02 00:18:33  ji
+ * First limited release.
+ *
+ * Local Variables:
+ * c-style: linux
+ * End:
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/ipsec_xform.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,360 @@
+/*
+ * Common routines for IPSEC transformations.
+ * Copyright (C) 1996, 1997  John Ioannidis.
+ * Copyright (C) 1998, 1999, 2000, 2001  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id: ipsec_xform.c,v 1.65.2.1 2006-10-06 21:39:26 paul Exp $
+ */
+
+#ifndef AUTOCONF_INCLUDED
+#include <linux/config.h>
+#endif
+#include <linux/version.h>
+#include <linux/kernel.h> /* printk() */
+
+#include "freeswan/ipsec_param.h"
+
+#ifdef MALLOC_SLAB
+# include <linux/slab.h> /* kmalloc() */
+#else /* MALLOC_SLAB */
+# include <linux/malloc.h> /* kmalloc() */
+#endif /* MALLOC_SLAB */
+#include <linux/errno.h>  /* error codes */
+#include <linux/types.h>  /* size_t */
+#include <linux/interrupt.h> /* mark_bh */
+
+#include <linux/netdevice.h>   /* struct device, and other headers */
+#include <linux/etherdevice.h> /* eth_type_trans */
+#include <linux/ip.h>          /* struct iphdr */
+#include <linux/skbuff.h>
+#include <linux/random.h>      /* get_random_bytes() */
+#include <freeswan.h>
+#ifdef SPINLOCK
+# ifdef SPINLOCK_23
+#  include <linux/spinlock.h> /* *lock* */
+# else /* SPINLOCK_23 */
+#  include <asm/spinlock.h> /* *lock* */
+# endif /* SPINLOCK_23 */
+#endif /* SPINLOCK */
+
+#include <net/ip.h>
+
+#include "freeswan/radij.h"
+#include "freeswan/ipsec_encap.h"
+#include "freeswan/ipsec_radij.h"
+#include "freeswan/ipsec_xform.h"
+#include "freeswan/ipsec_ipe4.h"
+#include "freeswan/ipsec_ah.h"
+#include "freeswan/ipsec_esp.h"
+
+#include <pfkeyv2.h>
+#include <pfkey.h>
+
+#ifdef CONFIG_KLIPS_DEBUG
+int debug_xform = 0;
+#endif /* CONFIG_KLIPS_DEBUG */
+
+#ifdef SPINLOCK
+spinlock_t tdb_lock = SPIN_LOCK_UNLOCKED;
+#else /* SPINLOCK */
+spinlock_t tdb_lock;
+#endif /* SPINLOCK */
+
+/*
+ * $Log: ipsec_xform.c,v $
+ * Revision 1.65.2.1  2006-10-06 21:39:26  paul
+ * Fix for 2.6.18+ only include linux/config.h if AUTOCONF_INCLUDED is not
+ * set. This is defined through autoconf.h which is included through the
+ * linux kernel build macros.
+ *
+ * Revision 1.65  2005/04/29 05:10:22  mcr
+ *     removed from extraenous includes to make unit testing easier.
+ *
+ * Revision 1.64  2004/07/10 19:11:18  mcr
+ *     CONFIG_IPSEC -> CONFIG_KLIPS.
+ *
+ * Revision 1.63  2003/10/31 02:27:55  mcr
+ *     pulled up port-selector patches and sa_id elimination.
+ *
+ * Revision 1.62.30.1  2003/10/29 01:30:41  mcr
+ *     elimited "struct sa_id".
+ *
+ * Revision 1.62  2002/05/14 02:34:21  rgb
+ * Delete stale code.
+ *
+ * Revision 1.61  2002/04/24 07:55:32  mcr
+ *     #include patches and Makefiles for post-reorg compilation.
+ *
+ * Revision 1.60  2002/04/24 07:36:33  mcr
+ * Moved from ./klips/net/ipsec/ipsec_xform.c,v
+ *
+ * Revision 1.59  2002/03/29 15:01:36  rgb
+ * Delete decommissioned code.
+ *
+ * Revision 1.58  2002/01/29 17:17:57  mcr
+ *     moved include of ipsec_param.h to after include of linux/kernel.h
+ *     otherwise, it seems that some option that is set in ipsec_param.h
+ *     screws up something subtle in the include path to kernel.h, and
+ *     it complains on the snprintf() prototype.
+ *
+ * Revision 1.57  2002/01/29 04:00:53  mcr
+ *     more excise of kversions.h header.
+ *
+ * Revision 1.56  2001/11/27 05:17:22  mcr
+ *     turn off the worst of the per-packet debugging.
+ *
+ * Revision 1.55  2001/11/26 09:23:50  rgb
+ * Merge MCR's ipsec_sa, eroute, proc and struct lifetime changes.
+ *
+ * Revision 1.54  2001/10/18 04:45:21  rgb
+ * 2.4.9 kernel deprecates linux/malloc.h in favour of linux/slab.h,
+ * lib/freeswan.h version macros moved to lib/kversions.h.
+ * Other compiler directive cleanups.
+ *
+ * Revision 1.53  2001/09/08 21:13:34  rgb
+ * Added pfkey ident extension support for ISAKMPd. (NetCelo)
+ *
+ * Revision 1.52  2001/06/14 19:35:11  rgb
+ * Update copyright date.
+ *
+ * Revision 1.51  2001/05/30 08:14:03  rgb
+ * Removed vestiges of esp-null transforms.
+ *
+ * Revision 1.50  2001/05/03 19:43:18  rgb
+ * Initialise error return variable.
+ * Update SENDERR macro.
+ * Fix sign of error return code for ipsec_tdbcleanup().
+ * Use more appropriate return code for ipsec_tdbwipe().
+ *
+ * Revision 1.49  2001/04/19 18:56:17  rgb
+ * Fixed tdb table locking comments.
+ *
+ * Revision 1.48  2001/02/27 22:24:55  rgb
+ * Re-formatting debug output (line-splitting, joining, 1arg/line).
+ * Check for satoa() return codes.
+ *
+ * Revision 1.47  2000/11/06 04:32:08  rgb
+ * Ditched spin_lock_irqsave in favour of spin_lock_bh.
+ *
+ * Revision 1.46  2000/09/20 16:21:57  rgb
+ * Cleaned up ident string alloc/free.
+ *
+ * Revision 1.45  2000/09/08 19:16:51  rgb
+ * Change references from DEBUG_IPSEC to CONFIG_IPSEC_DEBUG.
+ * Removed all references to CONFIG_IPSEC_PFKEYv2.
+ *
+ * Revision 1.44  2000/08/30 05:29:04  rgb
+ * Compiler-define out no longer used tdb_init() in ipsec_xform.c.
+ *
+ * Revision 1.43  2000/08/18 21:30:41  rgb
+ * Purged all tdb_spi, tdb_proto and tdb_dst macros.  They are unclear.
+ *
+ * Revision 1.42  2000/08/01 14:51:51  rgb
+ * Removed _all_ remaining traces of DES.
+ *
+ * Revision 1.41  2000/07/28 14:58:31  rgb
+ * Changed kfree_s to kfree, eliminating extra arg to fix 2.4.0-test5.
+ *
+ * Revision 1.40  2000/06/28 05:50:11  rgb
+ * Actually set iv_bits.
+ *
+ * Revision 1.39  2000/05/10 23:11:09  rgb
+ * Added netlink debugging output.
+ * Added a cast to quiet down the ntohl bug.
+ *
+ * Revision 1.38  2000/05/10 19:18:42  rgb
+ * Cast output of ntohl so that the broken prototype doesn't make our
+ * compile noisy.
+ *
+ * Revision 1.37  2000/03/16 14:04:59  rgb
+ * Hardwired CONFIG_IPSEC_PFKEYv2 on.
+ *
+ * Revision 1.36  2000/01/26 10:11:28  rgb
+ * Fixed spacing in error text causing run-in words.
+ *
+ * Revision 1.35  2000/01/21 06:17:16  rgb
+ * Tidied up compiler directive indentation for readability.
+ * Added ictx,octx vars for simplification.(kravietz)
+ * Added macros for HMAC padding magic numbers.(kravietz)
+ * Fixed missing key length reporting bug.
+ * Fixed bug in tdbwipe to return immediately on NULL tdbp passed in.
+ *
+ * Revision 1.34  1999/12/08 00:04:19  rgb
+ * Fixed SA direction overwriting bug for netlink users.
+ *
+ * Revision 1.33  1999/12/01 22:16:44  rgb
+ * Minor formatting changes in ESP MD5 initialisation.
+ *
+ * Revision 1.32  1999/11/25 09:06:36  rgb
+ * Fixed error return messages, should be returning negative numbers.
+ * Implemented SENDERR macro for propagating error codes.
+ * Added debug message and separate error code for algorithms not compiled
+ * in.
+ *
+ * Revision 1.31  1999/11/23 23:06:26  rgb
+ * Sort out pfkey and freeswan headers, putting them in a library path.
+ *
+ * Revision 1.30  1999/11/18 04:09:20  rgb
+ * Replaced all kernel version macros to shorter, readable form.
+ *
+ * Revision 1.29  1999/11/17 15:53:40  rgb
+ * Changed all occurrences of #include "../../../lib/freeswan.h"
+ * to #include <freeswan.h> which works due to -Ilibfreeswan in the
+ * klips/net/ipsec/Makefile.
+ *
+ * Revision 1.28  1999/10/18 20:04:01  rgb
+ * Clean-out unused cruft.
+ *
+ * Revision 1.27  1999/10/03 19:01:03  rgb
+ * Spinlock support for 2.3.xx and 2.0.xx kernels.
+ *
+ * Revision 1.26  1999/10/01 16:22:24  rgb
+ * Switch from assignment init. to functional init. of spinlocks.
+ *
+ * Revision 1.25  1999/10/01 15:44:54  rgb
+ * Move spinlock header include to 2.1> scope.
+ *
+ * Revision 1.24  1999/10/01 00:03:46  rgb
+ * Added tdb structure locking.
+ * Minor formatting changes.
+ * Add function to initialize tdb hash table.
+ *
+ * Revision 1.23  1999/05/25 22:42:12  rgb
+ * Add deltdbchain() debugging.
+ *
+ * Revision 1.22  1999/05/25 21:24:31  rgb
+ * Add debugging statements to deltdbchain().
+ *
+ * Revision 1.21  1999/05/25 03:51:48  rgb
+ * Refix error return code.
+ *
+ * Revision 1.20  1999/05/25 03:34:07  rgb
+ * Fix error return for flush.
+ *
+ * Revision 1.19  1999/05/09 03:25:37  rgb
+ * Fix bug introduced by 2.2 quick-and-dirty patch.
+ *
+ * Revision 1.18  1999/05/05 22:02:32  rgb
+ * Add a quick and dirty port to 2.2 kernels by Marc Boucher <marc@mbsi.ca>.
+ *
+ * Revision 1.17  1999/04/29 15:20:16  rgb
+ * Change gettdb parameter to a pointer to reduce stack loading and
+ * facilitate parameter sanity checking.
+ * Add sanity checking for null pointer arguments.
+ * Add debugging instrumentation.
+ * Add function deltdbchain() which will take care of unlinking,
+ * zeroing and deleting a chain of tdbs.
+ * Add a parameter to tdbcleanup to be able to delete a class of SAs.
+ * tdbwipe now actually zeroes the tdb as well as any of its pointed
+ * structures.
+ *
+ * Revision 1.16  1999/04/16 15:36:29  rgb
+ * Fix cut-and-paste error causing a memory leak in IPIP TDB freeing.
+ *
+ * Revision 1.15  1999/04/11 00:29:01  henry
+ * GPL boilerplate
+ *
+ * Revision 1.14  1999/04/06 04:54:28  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.13  1999/02/19 18:23:01  rgb
+ * Nix debug off compile warning.
+ *
+ * Revision 1.12  1999/02/17 16:52:16  rgb
+ * Consolidate satoa()s for space and speed efficiency.
+ * Convert DEBUG_IPSEC to KLIPS_PRINT
+ * Clean out unused cruft.
+ * Ditch NET_IPIP dependancy.
+ * Loop for 3des key setting.
+ *
+ * Revision 1.11  1999/01/26 02:09:05  rgb
+ * Remove ah/esp/IPIP switching on include files.
+ * Removed CONFIG_IPSEC_ALGO_SWITCH macro.
+ * Removed dead code.
+ * Clean up debug code when switched off.
+ * Remove references to INET_GET_PROTOCOL.
+ * Added code exclusion macros to reduce code from unused algorithms.
+ *
+ * Revision 1.10  1999/01/22 06:28:55  rgb
+ * Cruft clean-out.
+ * Put random IV generation in kernel.
+ * Added algorithm switch code.
+ * Enhanced debugging.
+ * 64-bit clean-up.
+ *
+ * Revision 1.9  1998/11/30 13:22:55  rgb
+ * Rationalised all the klips kernel file headers.  They are much shorter
+ * now and won't conflict under RH5.2.
+ *
+ * Revision 1.8  1998/11/25 04:59:06  rgb
+ * Add conditionals for no IPIP tunnel code.
+ * Delete commented out code.
+ *
+ * Revision 1.7  1998/10/31 06:50:41  rgb
+ * Convert xform ASCII names to no spaces.
+ * Fixed up comments in #endif directives.
+ *
+ * Revision 1.6  1998/10/19 14:44:28  rgb
+ * Added inclusion of freeswan.h.
+ * sa_id structure implemented and used: now includes protocol.
+ *
+ * Revision 1.5  1998/10/09 04:32:19  rgb
+ * Added 'klips_debug' prefix to all klips printk debug statements.
+ *
+ * Revision 1.4  1998/08/12 00:11:31  rgb
+ * Added new xform functions to the xform table.
+ * Fixed minor debug output spelling error.
+ *
+ * Revision 1.3  1998/07/09 17:45:31  rgb
+ * Clarify algorithm not available message.
+ *
+ * Revision 1.2  1998/06/23 03:00:51  rgb
+ * Check for presence of IPIP protocol if it is setup one way (we don't
+ * know what has been set up the other way and can only assume it will be
+ * symmetrical with the exception of keys).
+ *
+ * Revision 1.1  1998/06/18 21:27:51  henry
+ * move sources from klips/src to klips/net/ipsec, to keep stupid
+ * kernel-build scripts happier in the presence of symlinks
+ *
+ * Revision 1.3  1998/06/11 05:54:59  rgb
+ * Added transform version string pointer to xformsw initialisations.
+ *
+ * Revision 1.2  1998/04/21 21:28:57  rgb
+ * Rearrange debug switches to change on the fly debug output from user
+ * space.  Only kernel changes checked in at this time.  radij.c was also
+ * changed to temporarily remove buggy debugging code in rj_delete causing
+ * an OOPS and hence, netlink device open errors.
+ *
+ * Revision 1.1  1998/04/09 03:06:13  henry
+ * sources moved up from linux/net/ipsec
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:02  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.5  1997/06/03 04:24:48  ji
+ * Added ESP-3DES-MD5-96
+ *
+ * Revision 0.4  1997/01/15 01:28:15  ji
+ * Added new transforms.
+ *
+ * Revision 0.3  1996/11/20 14:39:04  ji
+ * Minor cleanups.
+ * Rationalized debugging code.
+ *
+ * Revision 0.2  1996/11/02 00:18:33  ji
+ * First limited release.
+ *
+ *
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/ipsec_xmit.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,1877 @@
+/*
+ * IPSEC Transmit code.
+ * Copyright (C) 1996, 1997  John Ioannidis.
+ * Copyright (C) 1998-2003   Richard Guy Briggs.
+ * Copyright (C) 2004-2005   Michael Richardson <mcr@xelerance.com>
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ */
+
+char ipsec_xmit_c_version[] = "RCSID $Id: ipsec_xmit.c,v 1.20.2.13 2007-10-30 21:38:56 paul Exp $";
+
+#define __NO_VERSION__
+#include <linux/module.h>
+#ifndef AUTOCONF_INCLUDED
+#include <linux/config.h>
+#endif /* for CONFIG_IP_FORWARD */
+#include <linux/version.h>
+#include <linux/kernel.h> /* printk() */
+
+#include "openswan/ipsec_param.h"
+
+#ifdef MALLOC_SLAB
+# include <linux/slab.h> /* kmalloc() */
+#else /* MALLOC_SLAB */
+# include <linux/malloc.h> /* kmalloc() */
+#endif /* MALLOC_SLAB */
+#include <linux/errno.h>  /* error codes */
+#include <linux/types.h>  /* size_t */
+#include <linux/interrupt.h> /* mark_bh */
+
+#include <linux/netdevice.h>   /* struct device, struct net_device_stats, dev_queue_xmit() and other headers */
+#include <linux/etherdevice.h> /* eth_type_trans */
+#include <linux/ip.h>          /* struct iphdr */
+#include <linux/tcp.h>         /* struct tcphdr */
+#include <linux/udp.h>         /* struct udphdr */
+#include <linux/skbuff.h>
+#include <asm/uaccess.h>
+#include <asm/checksum.h>
+#include <openswan.h>
+#ifdef NET_21
+# define MSS_HACK_             /* experimental */
+# include <linux/in6.h>
+# include <net/dst.h>
+# define proto_priv cb
+#endif /* NET_21 */
+
+#include <net/icmp.h>          /* icmp_send() */
+#include <net/ip.h>
+#ifdef NETDEV_23
+# include <linux/netfilter_ipv4.h>
+#endif /* NETDEV_23 */
+
+#include <linux/if_arp.h>
+#ifdef MSS_HACK
+# include <net/tcp.h>          /* TCP options */
+#endif /* MSS_HACK */
+
+#include "openswan/radij.h"
+#include "openswan/ipsec_life.h"
+#include "openswan/ipsec_xform.h"
+#include "openswan/ipsec_eroute.h"
+#include "openswan/ipsec_encap.h"
+#include "openswan/ipsec_radij.h"
+#include "openswan/ipsec_xmit.h"
+#include "openswan/ipsec_sa.h"
+#include "openswan/ipsec_tunnel.h"
+#include "openswan/ipsec_ipe4.h"
+#include "openswan/ipsec_ah.h"
+#include "openswan/ipsec_esp.h"
+
+#ifdef CONFIG_KLIPS_IPCOMP
+#include "openswan/ipcomp.h"
+#endif /* CONFIG_KLIPS_IPCOMP */
+
+#include <pfkeyv2.h>
+#include <pfkey.h>
+
+#include "openswan/ipsec_proto.h"
+#include "openswan/ipsec_alg.h"
+
+
+/* 
+ * Stupid kernel API differences in APIs. Not only do some
+ * kernels not have ip_select_ident, but some have differing APIs,
+ * and SuSE has one with one parameter, but no way of checking to
+ * see what is really what.
+ */
+
+#ifdef SUSE_LINUX_2_4_19_IS_STUPID
+#define KLIPS_IP_SELECT_IDENT(iph, skb) ip_select_ident(iph)
+#else
+
+/* simplest case, nothing */
+#if !defined(IP_SELECT_IDENT)
+#define KLIPS_IP_SELECT_IDENT(iph, skb)  do { iph->id = htons(ip_id_count++); } while(0)
+#endif
+
+/* kernels > 2.3.37-ish */
+#if defined(IP_SELECT_IDENT) && !defined(IP_SELECT_IDENT_NEW)
+#define KLIPS_IP_SELECT_IDENT(iph, skb) ip_select_ident(iph, skb->dst)
+#endif
+
+/* kernels > 2.4.2 */
+#if defined(IP_SELECT_IDENT) && defined(IP_SELECT_IDENT_NEW)
+#define KLIPS_IP_SELECT_IDENT(iph, skb) ip_select_ident(iph, skb->dst, NULL)
+#endif
+
+#endif /* SUSE_LINUX_2_4_19_IS_STUPID */
+
+
+
+#if defined(CONFIG_KLIPS_AH)
+static __u32 zeroes[64];
+#endif
+
+#ifdef CONFIG_KLIPS_DEBUG
+int sysctl_ipsec_debug_verbose = 0;
+#endif /* CONFIG_KLIPS_DEBUG */
+
+int ipsec_xmit_trap_count = 0;
+int ipsec_xmit_trap_sendcount = 0;
+
+int sysctl_ipsec_icmp = 0;
+int sysctl_ipsec_tos = 0;
+
+#ifdef CONFIG_KLIPS_DEBUG
+#define dmp(_x,_y,_z) if(debug_tunnel) ipsec_dmp_block(_x,_y,_z)
+#else /* CONFIG_KLIPS_DEBUG */
+#define dmp(_x, _y, _z) 
+#endif /* CONFIG_KLIPS_DEBUG */
+
+
+#if !defined(SKB_COPY_EXPAND) || defined(KLIPS_UNIT_TESTS)
+/*
+ *     This is mostly skbuff.c:skb_copy().
+ */
+struct sk_buff *
+skb_copy_expand(const struct sk_buff *skb, int headroom,
+               int tailroom, int priority)
+{
+       struct sk_buff *n;
+       unsigned long offset;
+
+       /*
+        *      Do sanity checking
+        */
+       if((headroom < 0) || (tailroom < 0) || ((headroom+tailroom) < 0)) {
+               printk(KERN_WARNING
+                      "klips_error:skb_copy_expand: "
+                      "Illegal negative head,tailroom %d,%d\n",
+                      headroom,
+                      tailroom);
+               return NULL;
+       }
+       /*
+        *      Allocate the copy buffer
+        */
+        
+#ifndef NET_21
+       IS_SKB(skb);
+#endif /* !NET_21 */
+
+
+       n=alloc_skb(skb->end - skb->head + headroom + tailroom, priority);
+
+       KLIPS_PRINT(debug_tunnel & DB_TN_CROUT,
+                   "klips_debug:skb_copy_expand: "
+                   "allocating %d bytes, head=0p%p data=0p%p tail=0p%p end=0p%p end-head=%d tail-data=%d\n",
+                   skb->end - skb->head + headroom + tailroom,
+                   skb->head,
+                   skb->data,
+                   skb->tail,
+                   skb->end,
+                   skb->end - skb->head,
+                   skb->tail - skb->data);
+
+       if(n==NULL)
+               return NULL;
+
+       /*
+        *      Shift between the two data areas in bytes
+        */
+        
+       /* Set the data pointer */
+       skb_reserve(n,skb->data-skb->head+headroom);
+       /* Set the tail pointer and length */
+       if(skb_tailroom(n) < skb->len) {
+               printk(KERN_WARNING "klips_error:skb_copy_expand: "
+                      "tried to skb_put %ld, %d available.  This should never happen, please report.\n",
+                      (unsigned long int)skb->len,
+                      skb_tailroom(n));
+               ipsec_kfree_skb(n);
+               return NULL;
+       }
+       skb_put(n,skb->len);
+
+       offset=n->head + headroom - skb->head;
+
+       /* Copy the bytes */
+       memcpy(n->head + headroom, skb->head,skb->end-skb->head);
+#ifdef NET_21
+       n->csum=skb->csum;
+       n->priority=skb->priority;
+       n->dst=dst_clone(skb->dst);
+       if(skb->nh.raw)
+               n->nh.raw=skb->nh.raw+offset;
+#ifndef NETDEV_23
+       n->is_clone=0;
+#endif /* NETDEV_23 */
+       atomic_set(&n->users, 1);
+       n->destructor = NULL;
+#ifdef HAVE_SOCK_SECURITY
+       n->security=skb->security;
+#endif
+#else /* NET_21 */
+       n->link3=NULL;
+       n->when=skb->when;
+       if(skb->ip_hdr)
+               n->ip_hdr=(struct iphdr *)(((char *)skb->ip_hdr)+offset);
+       n->saddr=skb->saddr;
+       n->daddr=skb->daddr;
+       n->raddr=skb->raddr;
+       n->seq=skb->seq;
+       n->end_seq=skb->end_seq;
+       n->ack_seq=skb->ack_seq;
+       n->acked=skb->acked;
+       n->free=1;
+       n->arp=skb->arp;
+       n->tries=0;
+       n->lock=0;
+       n->users=0;
+#endif /* NET_21 */
+       n->protocol=skb->protocol;
+       n->list=NULL;
+       n->sk=NULL;
+       n->dev=skb->dev;
+       if(skb->h.raw)
+               n->h.raw=skb->h.raw+offset;
+       if(skb->mac.raw) 
+               n->mac.raw=skb->mac.raw+offset;
+       memcpy(n->proto_priv, skb->proto_priv, sizeof(skb->proto_priv));
+#ifndef NETDEV_23
+       n->used=skb->used;
+#endif /* !NETDEV_23 */
+       n->pkt_type=skb->pkt_type;
+       n->stamp=skb->stamp;
+       
+#ifndef NET_21
+       IS_SKB(n);
+#endif /* !NET_21 */
+       return n;
+}
+#endif /* !SKB_COPY_EXPAND */
+
+#ifdef CONFIG_KLIPS_DEBUG
+void
+ipsec_print_ip(struct iphdr *ip)
+{
+       char buf[ADDRTOA_BUF];
+
+       printk(KERN_INFO "klips_debug:   IP:");
+       printk(" ihl:%d", ip->ihl << 2);
+       printk(" ver:%d", ip->version);
+       printk(" tos:%d", ip->tos);
+       printk(" tlen:%d", ntohs(ip->tot_len));
+       printk(" id:%d", ntohs(ip->id));
+       printk(" %s%s%sfrag_off:%d",
+               ip->frag_off & __constant_htons(IP_CE) ? "CE " : "",
+               ip->frag_off & __constant_htons(IP_DF) ? "DF " : "",
+               ip->frag_off & __constant_htons(IP_MF) ? "MF " : "",
+               (ntohs(ip->frag_off) & IP_OFFSET) << 3);
+       printk(" ttl:%d", ip->ttl);
+       printk(" proto:%d", ip->protocol);
+       if(ip->protocol == IPPROTO_UDP)
+               printk(" (UDP)");
+       if(ip->protocol == IPPROTO_TCP)
+               printk(" (TCP)");
+       if(ip->protocol == IPPROTO_ICMP)
+               printk(" (ICMP)");
+       if(ip->protocol == IPPROTO_ESP)
+               printk(" (ESP)");
+       if(ip->protocol == IPPROTO_AH)
+               printk(" (AH)");
+       if(ip->protocol == IPPROTO_COMP)
+               printk(" (COMP)");
+       printk(" chk:%d", ntohs(ip->check));
+       addrtoa(*((struct in_addr*)(&ip->saddr)), 0, buf, sizeof(buf));
+       printk(" saddr:%s", buf);
+       if(ip->protocol == IPPROTO_UDP)
+               printk(":%d",
+                      ntohs(((struct udphdr*)((caddr_t)ip + (ip->ihl << 2)))->source));
+       if(ip->protocol == IPPROTO_TCP)
+               printk(":%d",
+                      ntohs(((struct tcphdr*)((caddr_t)ip + (ip->ihl << 2)))->source));
+       addrtoa(*((struct in_addr*)(&ip->daddr)), 0, buf, sizeof(buf));
+       printk(" daddr:%s", buf);
+       if(ip->protocol == IPPROTO_UDP)
+               printk(":%d",
+                      ntohs(((struct udphdr*)((caddr_t)ip + (ip->ihl << 2)))->dest));
+       if(ip->protocol == IPPROTO_TCP)
+               printk(":%d",
+                      ntohs(((struct tcphdr*)((caddr_t)ip + (ip->ihl << 2)))->dest));
+       if(ip->protocol == IPPROTO_ICMP)
+               printk(" type:code=%d:%d",
+                      ((struct icmphdr*)((caddr_t)ip + (ip->ihl << 2)))->type,
+                      ((struct icmphdr*)((caddr_t)ip + (ip->ihl << 2)))->code);
+       printk("\n");
+
+       if(sysctl_ipsec_debug_verbose) {
+               __u8 *c;
+               int len = ntohs(ip->tot_len) - ip->ihl*4;
+               
+               c = ((__u8*)ip) + ip->ihl*4;
+               ipsec_dmp_block("ip_print", c, len);
+       }
+}
+#endif /* CONFIG_KLIPS_DEBUG */
+
+#ifdef MSS_HACK
+/*
+ * Issues:
+ *  1) Fragments arriving in the tunnel should probably be rejected.
+ *  2) How does this affect syncookies, mss_cache, dst cache ?
+ *  3) Path MTU discovery handling needs to be reviewed.  For example,
+ *     if we receive an ICMP 'packet too big' message from an intermediate 
+ *     router specifying it's next hop MTU, our stack may process this and
+ *     adjust the MSS without taking our AH/ESP overheads into account.
+ */
+
+ 
+/*
+ * Recaclulate checksum using differences between changed datum, 
+ * borrowed from netfilter.
+ */
+DEBUG_NO_STATIC u_int16_t 
+ipsec_fast_csum(u_int32_t oldvalinv, u_int32_t newval, u_int16_t oldcheck)
+{
+       u_int32_t diffs[] = { oldvalinv, newval };
+       return csum_fold(csum_partial((char *)diffs, sizeof(diffs),
+       oldcheck^0xFFFF));
+}
+
+/*
+ * Determine effective MSS.
+ *
+ * Note that we assume that there is always an MSS option for our own
+ * SYN segments, which is mentioned in tcp_syn_build_options(), kernel 2.2.x.
+ * This could change, and we should probably parse TCP options instead.
+ *
+ */
+DEBUG_NO_STATIC u_int8_t
+ipsec_adjust_mss(struct sk_buff *skb, struct tcphdr *tcph, u_int16_t mtu)
+{
+       u_int16_t oldmss, newmss;
+       u_int32_t *mssp;
+       struct sock *sk = skb->sk;
+       
+       newmss = tcp_sync_mss(sk, mtu);
+       printk(KERN_INFO "klips: setting mss to %u\n", newmss);
+       mssp = (u_int32_t *)tcph + sizeof(struct tcphdr) / sizeof(u_int32_t);
+       oldmss = ntohl(*mssp) & 0x0000FFFF;
+       *mssp = htonl((TCPOPT_MSS << 24) | (TCPOLEN_MSS << 16) | newmss);
+       tcph->check = ipsec_fast_csum(htons(~oldmss), 
+                                     htons(newmss), tcph->check);
+       return 1;
+}
+#endif /* MSS_HACK */
+                                                        
+/*
+ * Sanity checks
+ */
+enum ipsec_xmit_value
+ipsec_xmit_sanity_check_dev(struct ipsec_xmit_state *ixs)
+{
+
+       if (ixs->dev == NULL) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                           "klips_error:ipsec_xmit_sanity_check_dev: "
+                           "No device associated with skb!\n" );
+               return IPSEC_XMIT_NODEV;
+       }
+
+       ixs->prv = ixs->dev->priv;
+       if (ixs->prv == NULL) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                           "klips_error:ipsec_xmit_sanity_check_dev: "
+                           "Device has no private structure!\n" );
+               return  IPSEC_XMIT_NOPRIVDEV;
+       }
+
+       ixs->physdev = ixs->prv->dev;
+       if (ixs->physdev == NULL) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                           "klips_error:ipsec_xmit_sanity_check_dev: "
+                           "Device is not attached to physical device!\n" );
+               return IPSEC_XMIT_NOPHYSDEV;
+       }
+
+       ixs->physmtu = ixs->physdev->mtu;
+        ixs->cur_mtu = ixs->physdev->mtu;
+       ixs->stats = (struct net_device_stats *) &(ixs->prv->mystats);
+
+       return IPSEC_XMIT_OK;
+}
+
+enum ipsec_xmit_value
+ipsec_xmit_sanity_check_skb(struct ipsec_xmit_state *ixs)
+{
+       /*
+        *      Return if there is nothing to do.  (Does this ever happen?) XXX
+        */
+       if (ixs->skb == NULL) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                           "klips_error:ipsec_xmit_sanity_check_skb: "
+                           "Nothing to do!\n" );
+               return IPSEC_XMIT_NOSKB;
+       }
+
+       /* if skb was cloned (most likely due to a packet sniffer such as
+          tcpdump being momentarily attached to the interface), make
+          a copy of our own to modify */
+       if(skb_cloned(ixs->skb)) {
+               if
+#ifdef SKB_COW_NEW
+              (skb_cow(ixs->skb, skb_headroom(ixs->skb)) != 0)
+#else /* SKB_COW_NEW */
+              ((ixs->skb = skb_cow(ixs->skb, skb_headroom(ixs->skb))) == NULL)
+#endif /* SKB_COW_NEW */
+               {
+                       KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                                   "klips_error:ipsec_xmit_sanity_check_skb: "
+                                   "skb_cow failed to allocate buffer, dropping.\n" );
+                       ixs->stats->tx_dropped++;
+                       return IPSEC_XMIT_ERRSKBALLOC;
+               }
+       }
+
+       ixs->iph = ip_hdr(ixs->skb);
+
+       /* sanity check for IP version as we can't handle IPv6 right now */
+       if (ixs->iph->version != 4) {
+               KLIPS_PRINT(debug_tunnel,
+                           "klips_debug:ipsec_xmit_sanity_check_skb: "
+                           "found IP Version %d but cannot process other IP versions than v4.\n",
+                           ixs->iph->version); /* XXX */
+               ixs->stats->tx_dropped++;
+               return IPSEC_XMIT_NOIPV6;
+       }
+       
+#if IPSEC_DISALLOW_IPOPTIONS
+       if ((ixs->iph->ihl << 2) != sizeof (struct iphdr)) {
+               KLIPS_PRINT(debug_tunnel,
+                           "klips_debug:ipsec_xmit_sanity_check_skb: "
+                           "cannot process IP header options yet.  May be mal-formed packet.\n"); /* XXX */
+               ixs->stats->tx_dropped++;
+               return IPSEC_XMIT_NOIPOPTIONS;
+       }
+#endif /* IPSEC_DISALLOW_IPOPTIONS */
+       
+#ifndef NET_21
+       if (ixs->iph->ttl <= 0) {
+               /* Tell the sender its packet died... */
+               ICMP_SEND(ixs->skb, ICMP_TIME_EXCEEDED, ICMP_EXC_TTL, 0, ixs->physdev);
+
+               KLIPS_PRINT(debug_tunnel, "klips_debug:ipsec_xmit_sanity_check_skb: "
+                           "TTL=0, too many hops!\n");
+               ixs->stats->tx_dropped++;
+               return IPSEC_XMIT_TTLEXPIRED;
+       }
+#endif /* !NET_21 */
+       
+       return IPSEC_XMIT_OK;
+}
+
+enum ipsec_xmit_value
+ipsec_xmit_encap_once(struct ipsec_xmit_state *ixs)
+{
+#ifdef CONFIG_KLIPS_ESP
+       struct esphdr *espp;
+       unsigned char *idat, *pad;
+       int authlen = 0, padlen = 0, i;
+#endif /* !CONFIG_KLIPS_ESP */
+#ifdef CONFIG_KLIPS_AH
+       struct iphdr ipo;
+       struct ahhdr *ahp;
+#endif /* CONFIG_KLIPS_AH */
+#if defined(CONFIG_KLIPS_AUTH_HMAC_MD5) || defined(CONFIG_KLIPS_AUTH_HMAC_SHA1)
+       union {
+#ifdef CONFIG_KLIPS_AUTH_HMAC_MD5
+               MD5_CTX md5;
+#endif /* CONFIG_KLIPS_AUTH_HMAC_MD5 */
+#ifdef CONFIG_KLIPS_AUTH_HMAC_SHA1
+               SHA1_CTX sha1;
+#endif /* CONFIG_KLIPS_AUTH_HMAC_SHA1 */
+       } tctx;
+       __u8 hash[AH_AMAX];
+#endif /* defined(CONFIG_KLIPS_AUTH_HMAC_MD5) || defined(CONFIG_KLIPS_AUTH_HMACn_SHA1) */
+       int headroom = 0, tailroom = 0, ilen = 0, len = 0;
+       unsigned char *dat;
+       int blocksize = 8; /* XXX: should be inside ixs --jjo */
+       struct ipsec_alg_enc *ixt_e = NULL;
+       struct ipsec_alg_auth *ixt_a = NULL;
+       
+       ixs->iphlen = ixs->iph->ihl << 2;
+       ixs->pyldsz = ntohs(ixs->iph->tot_len) - ixs->iphlen;
+       ixs->sa_len = KLIPS_SATOT(debug_tunnel, &ixs->ipsp->ips_said, 0, ixs->sa_txt, SATOT_BUF);
+       KLIPS_PRINT(debug_tunnel & DB_TN_OXFS,
+                   "klips_debug:ipsec_xmit_encap_once: "
+                   "calling output for <%s%s%s>, SA:%s\n", 
+                   IPS_XFORM_NAME(ixs->ipsp),
+                   ixs->sa_len ? ixs->sa_txt : " (error)");
+       
+       switch(ixs->ipsp->ips_said.proto) {
+#ifdef CONFIG_KLIPS_AH
+       case IPPROTO_AH:
+               headroom += sizeof(struct ahhdr);
+               break;
+#endif /* CONFIG_KLIPS_AH */
+
+#ifdef CONFIG_KLIPS_ESP
+       case IPPROTO_ESP:
+               ixt_e=ixs->ipsp->ips_alg_enc;
+               if (ixt_e) {
+                       blocksize = ixt_e->ixt_common.ixt_blocksize;
+                       headroom += ESP_HEADER_LEN + ixt_e->ixt_common.ixt_support.ias_ivlen/8;
+               } else {
+                       ixs->stats->tx_errors++;
+                       return IPSEC_XMIT_ESP_BADALG;
+               }
+
+               ixt_a=ixs->ipsp->ips_alg_auth;
+               if (ixt_a) {
+                       tailroom += AHHMAC_HASHLEN;
+                       authlen = AHHMAC_HASHLEN;
+               } else 
+               switch(ixs->ipsp->ips_authalg) {
+#ifdef CONFIG_KLIPS_AUTH_HMAC_MD5
+               case AH_MD5:
+                       authlen = AHHMAC_HASHLEN;
+                       break;
+#endif /* CONFIG_KLIPS_AUTH_HMAC_MD5 */
+#ifdef CONFIG_KLIPS_AUTH_HMAC_SHA1
+               case AH_SHA:
+                       authlen = AHHMAC_HASHLEN;
+                       break;
+#endif /* CONFIG_KLIPS_AUTH_HMAC_SHA1 */
+               case AH_NONE:
+                       break;
+               default:
+                       ixs->stats->tx_errors++;
+                       return IPSEC_XMIT_ESP_BADALG;
+               }               
+               tailroom += blocksize != 1 ?
+                       ((blocksize - ((ixs->pyldsz + 2) % blocksize)) % blocksize) + 2 :
+                       ((4 - ((ixs->pyldsz + 2) % 4)) % 4) + 2;
+               tailroom += authlen;
+               break;
+#endif /* CONFIG_KLIPS_ESP */
+
+#ifdef CONFIG_KLIPS_IPIP
+       case IPPROTO_IPIP:
+               headroom += sizeof(struct iphdr);
+               ixs->iphlen = sizeof(struct iphdr);
+               break;
+#endif /* !CONFIG_KLIPS_IPIP */
+
+#ifdef CONFIG_KLIPS_IPCOMP
+       case IPPROTO_COMP:
+               break;
+#endif /* CONFIG_KLIPS_IPCOMP */
+
+       default:
+               ixs->stats->tx_errors++;
+               return IPSEC_XMIT_BADPROTO;
+       }
+       
+       KLIPS_PRINT(debug_tunnel & DB_TN_CROUT,
+                   "klips_debug:ipsec_xmit_encap_once: "
+                   "pushing %d bytes, putting %d, proto %d.\n", 
+                   headroom, tailroom, ixs->ipsp->ips_said.proto);
+       if(skb_headroom(ixs->skb) < headroom) {
+               printk(KERN_WARNING
+                      "klips_error:ipsec_xmit_encap_once: "
+                      "tried to skb_push headroom=%d, %d available.  This should never happen, please report.\n",
+                      headroom, skb_headroom(ixs->skb));
+               ixs->stats->tx_errors++;
+               return IPSEC_XMIT_ESP_PUSHPULLERR;
+       }
+
+       dat = skb_push(ixs->skb, headroom);
+       ilen = ixs->skb->len - tailroom;
+       if(skb_tailroom(ixs->skb) < tailroom) {
+               printk(KERN_WARNING
+                      "klips_error:ipsec_xmit_encap_once: "
+                      "tried to skb_put %d, %d available.  This should never happen, please report.\n",
+                      tailroom, skb_tailroom(ixs->skb));
+               ixs->stats->tx_errors++;
+               return IPSEC_XMIT_ESP_PUSHPULLERR;
+       }
+       skb_put(ixs->skb, tailroom);
+       KLIPS_PRINT(debug_tunnel & DB_TN_CROUT,
+                   "klips_debug:ipsec_xmit_encap_once: "
+                   "head,tailroom: %d,%d before xform.\n",
+                   skb_headroom(ixs->skb), skb_tailroom(ixs->skb));
+       len = ixs->skb->len;
+       if(len > 0xfff0) {
+               printk(KERN_WARNING "klips_error:ipsec_xmit_encap_once: "
+                      "tot_len (%d) > 65520.  This should never happen, please report.\n",
+                      len);
+               ixs->stats->tx_errors++;
+               return IPSEC_XMIT_BADLEN;
+       }
+       memmove((void *)dat, (void *)(dat + headroom), ixs->iphlen);
+       ixs->iph = (struct iphdr *)dat;
+       ixs->iph->tot_len = htons(ixs->skb->len);
+
+       switch(ixs->ipsp->ips_said.proto) {
+#ifdef CONFIG_KLIPS_ESP
+       case IPPROTO_ESP:
+               espp = (struct esphdr *)(dat + ixs->iphlen);
+               espp->esp_spi = ixs->ipsp->ips_said.spi;
+               espp->esp_rpl = htonl(++(ixs->ipsp->ips_replaywin_lastseq));
+               
+               if (!ixt_e) {
+                       ixs->stats->tx_errors++;
+                       return IPSEC_XMIT_ESP_BADALG;
+               }
+               
+               idat = dat + ixs->iphlen + headroom;
+               ilen = len - (ixs->iphlen + headroom + authlen);
+               
+               /* Self-describing padding */
+               pad = &dat[len - tailroom];
+               padlen = tailroom - 2 - authlen;
+               for (i = 0; i < padlen; i++) {
+                       pad[i] = i + 1; 
+               }
+               dat[len - authlen - 2] = padlen;
+               
+               dat[len - authlen - 1] = ixs->iph->protocol;
+               ixs->iph->protocol = IPPROTO_ESP;
+#ifdef CONFIG_KLIPS_DEBUG
+               if(debug_tunnel & DB_TN_ENCAP) {
+                       dmp("pre-encrypt", dat, len);
+               }
+#endif
+
+               /*
+                * Do all operations here:
+                * copy IV->ESP, encrypt, update ips IV
+                *
+                */
+               {
+                       int ret;
+                       memcpy(espp->esp_iv, 
+                              ixs->ipsp->ips_iv, 
+                              ixs->ipsp->ips_iv_size);
+                       ret=ipsec_alg_esp_encrypt(ixs->ipsp, 
+                                                 idat, ilen, espp->esp_iv,
+                                                 IPSEC_ALG_ENCRYPT);
+
+                       prng_bytes(&ipsec_prng,
+                                  (char *)ixs->ipsp->ips_iv,
+                                  ixs->ipsp->ips_iv_size);
+               } 
+               
+               if (ixt_a) {
+                       ipsec_alg_sa_esp_hash(ixs->ipsp,
+                                       (caddr_t)espp, len - ixs->iphlen - authlen,
+                                       &(dat[len - authlen]), authlen);
+
+               } else
+               switch(ixs->ipsp->ips_authalg) {
+#ifdef CONFIG_KLIPS_AUTH_HMAC_MD5
+               case AH_MD5:
+                       dmp("espp", (char*)espp, len - ixs->iphlen - authlen);
+                       tctx.md5 = ((struct md5_ctx*)(ixs->ipsp->ips_key_a))->ictx;
+                       dmp("ictx", (char*)&tctx.md5, sizeof(tctx.md5));
+                       osMD5Update(&tctx.md5, (caddr_t)espp, len - ixs->iphlen - authlen);
+                       dmp("ictx+dat", (char*)&tctx.md5, sizeof(tctx.md5));
+                       osMD5Final(hash, &tctx.md5);
+                       dmp("ictx hash", (char*)&hash, sizeof(hash));
+                       tctx.md5 = ((struct md5_ctx*)(ixs->ipsp->ips_key_a))->octx;
+                       dmp("octx", (char*)&tctx.md5, sizeof(tctx.md5));
+                       osMD5Update(&tctx.md5, hash, AHMD596_ALEN);
+                       dmp("octx+hash", (char*)&tctx.md5, sizeof(tctx.md5));
+                       osMD5Final(hash, &tctx.md5);
+                       dmp("octx hash", (char*)&hash, sizeof(hash));
+                       memcpy(&(dat[len - authlen]), hash, authlen);
+                       
+                       /* paranoid */
+                       memset((caddr_t)&tctx.md5, 0, sizeof(tctx.md5));
+                       memset((caddr_t)hash, 0, sizeof(*hash));
+                       break;
+#endif /* CONFIG_KLIPS_AUTH_HMAC_MD5 */
+#ifdef CONFIG_KLIPS_AUTH_HMAC_SHA1
+               case AH_SHA:
+                       tctx.sha1 = ((struct sha1_ctx*)(ixs->ipsp->ips_key_a))->ictx;
+                       SHA1Update(&tctx.sha1, (caddr_t)espp, len - ixs->iphlen - authlen);
+                       SHA1Final(hash, &tctx.sha1);
+                       tctx.sha1 = ((struct sha1_ctx*)(ixs->ipsp->ips_key_a))->octx;
+                       SHA1Update(&tctx.sha1, hash, AHSHA196_ALEN);
+                       SHA1Final(hash, &tctx.sha1);
+                       memcpy(&(dat[len - authlen]), hash, authlen);
+                       
+                       /* paranoid */
+                       memset((caddr_t)&tctx.sha1, 0, sizeof(tctx.sha1));
+                       memset((caddr_t)hash, 0, sizeof(*hash));
+                       break;
+#endif /* CONFIG_KLIPS_AUTH_HMAC_SHA1 */
+               case AH_NONE:
+                       break;
+               default:
+                       ixs->stats->tx_errors++;
+                       return IPSEC_XMIT_AH_BADALG;
+               }
+#ifdef NET_21
+               /*ixs->skb->h.raw = (unsigned char*)espp;*/
+               skb_set_transport_header(ixs->skb, ipsec_skb_offset(ixs->skb, espp));
+#endif /* NET_21 */
+               break;
+#endif /* !CONFIG_KLIPS_ESP */
+#ifdef CONFIG_KLIPS_AH
+       case IPPROTO_AH:
+               ahp = (struct ahhdr *)(dat + ixs->iphlen);
+               ahp->ah_spi = ixs->ipsp->ips_said.spi;
+               ahp->ah_rpl = htonl(++(ixs->ipsp->ips_replaywin_lastseq));
+               ahp->ah_rv = 0;
+               ahp->ah_nh = ixs->iph->protocol;
+               ahp->ah_hl = (headroom >> 2) - sizeof(__u64)/sizeof(__u32);
+               ixs->iph->protocol = IPPROTO_AH;
+               dmp("ahp", (char*)ahp, sizeof(*ahp));
+               
+               ipo = *ixs->iph;
+               ipo.tos = 0;
+               ipo.frag_off = 0;
+               ipo.ttl = 0;
+               ipo.check = 0;
+               dmp("ipo", (char*)&ipo, sizeof(ipo));
+               
+               switch(ixs->ipsp->ips_authalg) {
+#ifdef CONFIG_KLIPS_AUTH_HMAC_MD5
+               case AH_MD5:
+                       tctx.md5 = ((struct md5_ctx*)(ixs->ipsp->ips_key_a))->ictx;
+                       dmp("ictx", (char*)&tctx.md5, sizeof(tctx.md5));
+                       osMD5Update(&tctx.md5, (unsigned char *)&ipo, sizeof (struct iphdr));
+                       dmp("ictx+ipo", (char*)&tctx.md5, sizeof(tctx.md5));
+                       osMD5Update(&tctx.md5, (unsigned char *)ahp, headroom - sizeof(ahp->ah_data));
+                       dmp("ictx+ahp", (char*)&tctx.md5, sizeof(tctx.md5));
+                       osMD5Update(&tctx.md5, (unsigned char *)zeroes, AHHMAC_HASHLEN);
+                       dmp("ictx+zeroes", (char*)&tctx.md5, sizeof(tctx.md5));
+                       osMD5Update(&tctx.md5,  dat + ixs->iphlen + headroom, len - ixs->iphlen - headroom);
+                       dmp("ictx+dat", (char*)&tctx.md5, sizeof(tctx.md5));
+                       osMD5Final(hash, &tctx.md5);
+                       dmp("ictx hash", (char*)&hash, sizeof(hash));
+                       tctx.md5 = ((struct md5_ctx*)(ixs->ipsp->ips_key_a))->octx;
+                       dmp("octx", (char*)&tctx.md5, sizeof(tctx.md5));
+                       osMD5Update(&tctx.md5, hash, AHMD596_ALEN);
+                       dmp("octx+hash", (char*)&tctx.md5, sizeof(tctx.md5));
+                       osMD5Final(hash, &tctx.md5);
+                       dmp("octx hash", (char*)&hash, sizeof(hash));
+                                       
+                       memcpy(ahp->ah_data, hash, AHHMAC_HASHLEN);
+                                       
+                       /* paranoid */
+                       memset((caddr_t)&tctx.md5, 0, sizeof(tctx.md5));
+                       memset((caddr_t)hash, 0, sizeof(*hash));
+                       break;
+#endif /* CONFIG_KLIPS_AUTH_HMAC_MD5 */
+#ifdef CONFIG_KLIPS_AUTH_HMAC_SHA1
+               case AH_SHA:
+                       tctx.sha1 = ((struct sha1_ctx*)(ixs->ipsp->ips_key_a))->ictx;
+                       SHA1Update(&tctx.sha1, (unsigned char *)&ipo, sizeof (struct iphdr));
+                       SHA1Update(&tctx.sha1, (unsigned char *)ahp, headroom - sizeof(ahp->ah_data));
+                       SHA1Update(&tctx.sha1, (unsigned char *)zeroes, AHHMAC_HASHLEN);
+                       SHA1Update(&tctx.sha1,  dat + ixs->iphlen + headroom, len - ixs->iphlen - headroom);
+                       SHA1Final(hash, &tctx.sha1);
+                       tctx.sha1 = ((struct sha1_ctx*)(ixs->ipsp->ips_key_a))->octx;
+                       SHA1Update(&tctx.sha1, hash, AHSHA196_ALEN);
+                       SHA1Final(hash, &tctx.sha1);
+                                       
+                       memcpy(ahp->ah_data, hash, AHHMAC_HASHLEN);
+                                       
+                       /* paranoid */
+                       memset((caddr_t)&tctx.sha1, 0, sizeof(tctx.sha1));
+                       memset((caddr_t)hash, 0, sizeof(*hash));
+                       break;
+#endif /* CONFIG_KLIPS_AUTH_HMAC_SHA1 */
+               default:
+                       ixs->stats->tx_errors++;
+                       return IPSEC_XMIT_AH_BADALG;
+               }
+#ifdef NET_21
+               skb_set_transport_header(ixs->skb, ipsec_skb_offset(ixs->skb, ahp));
+#endif /* NET_21 */
+               break;
+#endif /* CONFIG_KLIPS_AH */
+#ifdef CONFIG_KLIPS_IPIP
+       case IPPROTO_IPIP:
+               ixs->iph->version  = 4;
+               switch(sysctl_ipsec_tos) {
+               case 0:
+#ifdef NET_21
+                       ixs->iph->tos = ip_hdr(ixs->skb)->tos;
+#else /* NET_21 */
+                       ixs->iph->tos = ixs->skb->ip_hdr->tos;
+#endif /* NET_21 */
+                       break;
+               case 1:
+                       ixs->iph->tos = 0;
+                       break;
+               default:
+                       break;
+               }
+               ixs->iph->ttl      = SYSCTL_IPSEC_DEFAULT_TTL;
+               ixs->iph->frag_off = 0;
+               ixs->iph->saddr    = ((struct sockaddr_in*)(ixs->ipsp->ips_addr_s))->sin_addr.s_addr;
+               ixs->iph->daddr    = ((struct sockaddr_in*)(ixs->ipsp->ips_addr_d))->sin_addr.s_addr;
+               ixs->iph->protocol = IPPROTO_IPIP;
+               ixs->iph->ihl      = sizeof(struct iphdr) >> 2;
+
+               KLIPS_IP_SELECT_IDENT(ixs->iph, ixs->skb);
+
+               ixs->newdst = (__u32)ixs->iph->daddr;
+               ixs->newsrc = (__u32)ixs->iph->saddr;
+               
+#ifdef NET_21
+               skb_set_transport_header(ixs->skb, ipsec_skb_offset(ixs->skb, ip_hdr(ixs->skb)));
+#endif /* NET_21 */
+               break;
+#endif /* !CONFIG_KLIPS_IPIP */
+#ifdef CONFIG_KLIPS_IPCOMP
+       case IPPROTO_COMP:
+       {
+               unsigned int flags = 0;
+#ifdef CONFIG_KLIPS_DEBUG
+               unsigned int old_tot_len = ntohs(ixs->iph->tot_len);
+#endif /* CONFIG_KLIPS_DEBUG */
+               ixs->ipsp->ips_comp_ratio_dbytes += ntohs(ixs->iph->tot_len);
+
+               ixs->skb = skb_compress(ixs->skb, ixs->ipsp, &flags);
+
+#ifdef NET_21
+               ixs->iph = ip_hdr(ixs->skb);
+#else /* NET_21 */
+               ixs->iph = ixs->skb->ip_hdr;
+#endif /* NET_21 */
+
+               ixs->ipsp->ips_comp_ratio_cbytes += ntohs(ixs->iph->tot_len);
+
+#ifdef CONFIG_KLIPS_DEBUG
+               if (debug_tunnel & DB_TN_CROUT)
+               {
+                       if (old_tot_len > ntohs(ixs->iph->tot_len))
+                               KLIPS_PRINT(debug_tunnel & DB_TN_CROUT,
+                                           "klips_debug:ipsec_xmit_encap_once: "
+                                           "packet shrunk from %d to %d bytes after compression, cpi=%04x (should be from spi=%08x, spi&0xffff=%04x.\n",
+                                           old_tot_len, ntohs(ixs->iph->tot_len),
+                                           ntohs(((struct ipcomphdr*)(((char*)ixs->iph) + ((ixs->iph->ihl) << 2)))->ipcomp_cpi),
+                                           ntohl(ixs->ipsp->ips_said.spi),
+                                           (__u16)(ntohl(ixs->ipsp->ips_said.spi) & 0x0000ffff));
+                       else
+                               KLIPS_PRINT(debug_tunnel & DB_TN_CROUT,
+                                           "klips_debug:ipsec_xmit_encap_once: "
+                                           "packet did not compress (flags = %d).\n",
+                                           flags);
+               }
+#endif /* CONFIG_KLIPS_DEBUG */
+       }
+       break;
+#endif /* CONFIG_KLIPS_IPCOMP */
+       default:
+               ixs->stats->tx_errors++;
+               return IPSEC_XMIT_BADPROTO;
+       }
+                       
+#ifdef NET_21
+       skb_set_network_header(ixs->skb, ipsec_skb_offset(ixs->skb, ixs->skb->data));
+
+#else /* NET_21 */
+       ixs->skb->ip_hdr = ixs->skb->h.iph = (struct iphdr *) ixs->skb->data;
+#endif /* NET_21 */
+       ixs->iph->check = 0;
+       ixs->iph->check = ip_fast_csum((unsigned char *)ixs->iph, ixs->iph->ihl);
+                       
+       KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                   "klips_debug:ipsec_xmit_encap_once: "
+                   "after <%s%s%s>, SA:%s:\n",
+                   IPS_XFORM_NAME(ixs->ipsp),
+                   ixs->sa_len ? ixs->sa_txt : " (error)");
+       KLIPS_IP_PRINT(debug_tunnel & DB_TN_XMIT, ixs->iph);
+                       
+       ixs->ipsp->ips_life.ipl_bytes.ipl_count += len;
+       ixs->ipsp->ips_life.ipl_bytes.ipl_last = len;
+
+       if(!ixs->ipsp->ips_life.ipl_usetime.ipl_count) {
+               ixs->ipsp->ips_life.ipl_usetime.ipl_count = jiffies / HZ;
+       }
+       ixs->ipsp->ips_life.ipl_usetime.ipl_last = jiffies / HZ;
+       ixs->ipsp->ips_life.ipl_packets.ipl_count++; 
+
+       ixs->ipsp = ixs->ipsp->ips_onext;
+                       
+       return IPSEC_XMIT_OK;
+}
+
+/*
+ * If the IP packet (iph) is a carrying TCP/UDP, then set the encaps
+ * source and destination ports to those from the TCP/UDP header.
+ */
+void ipsec_extract_ports(struct iphdr * iph, struct sockaddr_encap * er)
+{
+       struct udphdr *udp;
+
+       switch (iph->protocol) {
+       case IPPROTO_UDP:
+       case IPPROTO_TCP:
+               /*
+                * The ports are at the same offsets in a TCP and UDP
+                * header so hack it ...
+                */
+               udp = (struct udphdr*)(((char*)iph)+(iph->ihl<<2));
+               er->sen_sport = udp->source;
+               er->sen_dport = udp->dest;
+               break;
+       default:
+               er->sen_sport = 0;
+               er->sen_dport = 0;
+               break;
+       }
+}
+
+/*
+ * A TRAP eroute is installed and we want to replace it with a HOLD
+ * eroute.
+ */
+static int create_hold_eroute(struct eroute *origtrap,
+                             struct sk_buff * skb, struct iphdr * iph,
+                             uint32_t eroute_pid)
+{
+       struct eroute hold_eroute;
+       ip_said hold_said;
+       struct sk_buff *first, *last;
+       int error;
+
+       first = last = NULL;
+       memset((caddr_t)&hold_eroute, 0, sizeof(hold_eroute));
+       memset((caddr_t)&hold_said, 0, sizeof(hold_said));
+       
+       hold_said.proto = IPPROTO_INT;
+       hold_said.spi = htonl(SPI_HOLD);
+       hold_said.dst.u.v4.sin_addr.s_addr = INADDR_ANY;
+       
+       hold_eroute.er_eaddr.sen_len = sizeof(struct sockaddr_encap);
+       hold_eroute.er_emask.sen_len = sizeof(struct sockaddr_encap);
+       hold_eroute.er_eaddr.sen_family = AF_ENCAP;
+       hold_eroute.er_emask.sen_family = AF_ENCAP;
+       hold_eroute.er_eaddr.sen_type = SENT_IP4;
+       hold_eroute.er_emask.sen_type = 255;
+       
+       hold_eroute.er_eaddr.sen_ip_src.s_addr = iph->saddr;
+       hold_eroute.er_eaddr.sen_ip_dst.s_addr = iph->daddr;
+       hold_eroute.er_emask.sen_ip_src.s_addr = INADDR_BROADCAST;
+       hold_eroute.er_emask.sen_ip_dst.s_addr = INADDR_BROADCAST;
+       hold_eroute.er_emask.sen_sport = 0;
+       hold_eroute.er_emask.sen_dport = 0;
+       hold_eroute.er_pid = eroute_pid;
+       hold_eroute.er_count = 0;
+       hold_eroute.er_lasttime = jiffies/HZ;
+
+       /*
+        * if it wasn't captured by a wildcard, then don't record it as
+        * a wildcard.
+        */
+       if(origtrap->er_eaddr.sen_proto != 0) {
+         hold_eroute.er_eaddr.sen_proto = iph->protocol;
+
+         if((iph->protocol == IPPROTO_TCP ||
+             iph->protocol == IPPROTO_UDP) &&
+            (origtrap->er_eaddr.sen_sport != 0 ||
+             origtrap->er_eaddr.sen_dport != 0)) {
+
+           if(origtrap->er_eaddr.sen_sport != 0)
+             hold_eroute.er_emask.sen_sport = ~0;
+
+           if(origtrap->er_eaddr.sen_dport != 0) 
+             hold_eroute.er_emask.sen_dport = ~0;
+
+           ipsec_extract_ports(iph, &hold_eroute.er_eaddr);
+         }
+       }
+
+#ifdef CONFIG_KLIPS_DEBUG
+       if (debug_pfkey) {
+               char buf1[64], buf2[64];
+               subnettoa(hold_eroute.er_eaddr.sen_ip_src,
+                         hold_eroute.er_emask.sen_ip_src, 0, buf1, sizeof(buf1));
+               subnettoa(hold_eroute.er_eaddr.sen_ip_dst,
+                         hold_eroute.er_emask.sen_ip_dst, 0, buf2, sizeof(buf2));
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:ipsec_tunnel_start_xmit: "
+                           "calling breakeroute and makeroute for %s:%d->%s:%d %d HOLD eroute.\n",
+                           buf1, ntohs(hold_eroute.er_eaddr.sen_sport),
+                           buf2, ntohs(hold_eroute.er_eaddr.sen_dport),
+                           hold_eroute.er_eaddr.sen_proto);
+       }
+#endif /* CONFIG_KLIPS_DEBUG */
+
+       if (ipsec_breakroute(&(hold_eroute.er_eaddr), &(hold_eroute.er_emask),
+                            &first, &last)) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:ipsec_tunnel_start_xmit: "
+                           "HOLD breakeroute found nothing.\n");
+       } else {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:ipsec_tunnel_start_xmit: "
+                           "HOLD breakroute deleted %u.%u.%u.%u:%u -> %u.%u.%u.%u:%u %u\n",
+                           NIPQUAD(hold_eroute.er_eaddr.sen_ip_src),
+                           ntohs(hold_eroute.er_eaddr.sen_sport),
+                           NIPQUAD(hold_eroute.er_eaddr.sen_ip_dst),
+                           ntohs(hold_eroute.er_eaddr.sen_dport),
+                           hold_eroute.er_eaddr.sen_proto);
+       }
+       if (first != NULL)
+               kfree_skb(first);
+       if (last != NULL)
+               kfree_skb(last);
+
+       error = ipsec_makeroute(&(hold_eroute.er_eaddr),
+                               &(hold_eroute.er_emask),
+                               hold_said, eroute_pid, skb, NULL, NULL);
+       if (error) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:ipsec_tunnel_start_xmit: "
+                           "HOLD makeroute returned %d, failed.\n", error);
+       } else {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:ipsec_tunnel_start_xmit: "
+                           "HOLD makeroute call successful.\n");
+       }
+       return (error == 0);
+}
+
+/*
+ * upon entry to this function, ixs->skb should be setup
+ * as follows:
+ *
+ *   data   = beginning of IP packet   <- differs from ipsec_rcv().
+ *   nh.raw = beginning of IP packet.
+ *   h.raw  = data after the IP packet.
+ *
+ */
+enum ipsec_xmit_value
+ipsec_xmit_encap_bundle(struct ipsec_xmit_state *ixs)
+{
+#ifdef CONFIG_KLIPS_ALG
+       struct ipsec_alg_enc *ixt_e = NULL;
+       struct ipsec_alg_auth *ixt_a = NULL;
+       int blocksize = 8;
+#endif
+       enum ipsec_xmit_value bundle_stat = IPSEC_XMIT_OK;
+ 
+       ixs->newdst = ixs->orgdst = ixs->iph->daddr;
+       ixs->newsrc = ixs->orgsrc = ixs->iph->saddr;
+       ixs->orgedst = ixs->outgoing_said.dst.u.v4.sin_addr.s_addr;
+       ixs->iphlen = ixs->iph->ihl << 2;
+       ixs->pyldsz = ntohs(ixs->iph->tot_len) - ixs->iphlen;
+       ixs->max_headroom = ixs->max_tailroom = 0;
+               
+       if (ixs->outgoing_said.proto == IPPROTO_INT) {
+               switch (ntohl(ixs->outgoing_said.spi)) {
+               case SPI_DROP:
+                       KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                                   "klips_debug:ipsec_xmit_encap_bundle: "
+                                   "shunt SA of DROP or no eroute: dropping.\n");
+                       ixs->stats->tx_dropped++;
+                       break;
+                               
+               case SPI_REJECT:
+                       KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                                   "klips_debug:ipsec_xmit_encap_bundle: "
+                                   "shunt SA of REJECT: notifying and dropping.\n");
+                       ICMP_SEND(ixs->skb,
+                                 ICMP_DEST_UNREACH,
+                                 ICMP_PKT_FILTERED,
+                                 0,
+                                 ixs->physdev);
+                       ixs->stats->tx_dropped++;
+                       break;
+                               
+               case SPI_PASS:
+#ifdef NET_21
+                       ixs->pass = 1;
+#endif /* NET_21 */
+                       KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                                   "klips_debug:ipsec_xmit_encap_bundle: "
+                                   "PASS: calling dev_queue_xmit\n");
+                       return IPSEC_XMIT_PASS;
+                       goto cleanup;
+                               
+               case SPI_HOLD:
+                       KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                                   "klips_debug:ipsec_xmit_encap_bundle: "
+                                   "shunt SA of HOLD: this does not make sense here, dropping.\n");
+                       ixs->stats->tx_dropped++;
+                       break;
+
+               case SPI_TRAP:
+               case SPI_TRAPSUBNET:
+               {
+                       struct sockaddr_in src, dst;
+#ifdef CONFIG_KLIPS_DEBUG
+                       char bufsrc[ADDRTOA_BUF], bufdst[ADDRTOA_BUF];
+#endif /* CONFIG_KLIPS_DEBUG */
+
+                       /* Signal all listening KMds with a PF_KEY ACQUIRE */
+
+                       memset(&src, 0, sizeof(src));
+                       memset(&dst, 0, sizeof(dst));
+                       src.sin_family = AF_INET;
+                       dst.sin_family = AF_INET;
+                       src.sin_addr.s_addr = ixs->iph->saddr;
+                       dst.sin_addr.s_addr = ixs->iph->daddr;
+
+                       ixs->ips.ips_transport_protocol = 0;
+                       src.sin_port = 0;
+                       dst.sin_port = 0;
+                       
+                       if(ixs->eroute->er_eaddr.sen_proto != 0) {
+                         ixs->ips.ips_transport_protocol = ixs->iph->protocol;
+                         
+                         if(ixs->eroute->er_eaddr.sen_sport != 0) {
+                           src.sin_port = 
+                             (ixs->iph->protocol == IPPROTO_UDP
+                              ? ((struct udphdr*) (((caddr_t)ixs->iph) + (ixs->iph->ihl << 2)))->source
+                              : (ixs->iph->protocol == IPPROTO_TCP
+                                 ? ((struct tcphdr*)((caddr_t)ixs->iph + (ixs->iph->ihl << 2)))->source
+                                 : 0));
+                         }
+                         if(ixs->eroute->er_eaddr.sen_dport != 0) {
+                           dst.sin_port = 
+                             (ixs->iph->protocol == IPPROTO_UDP
+                              ? ((struct udphdr*) (((caddr_t)ixs->iph) + (ixs->iph->ihl << 2)))->dest
+                              : (ixs->iph->protocol == IPPROTO_TCP
+                                 ? ((struct tcphdr*)((caddr_t)ixs->iph + (ixs->iph->ihl << 2)))->dest
+                                 : 0));
+                         }
+                       }
+                               
+                       ixs->ips.ips_addr_s = (struct sockaddr*)(&src);
+                       ixs->ips.ips_addr_d = (struct sockaddr*)(&dst);
+                       KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                                   "klips_debug:ipsec_xmit_encap_bundle: "
+                                   "SADB_ACQUIRE sent with src=%s:%d, dst=%s:%d, proto=%d.\n",
+                                   addrtoa(((struct sockaddr_in*)(ixs->ips.ips_addr_s))->sin_addr, 0, bufsrc, sizeof(bufsrc)) <= ADDRTOA_BUF ? bufsrc : "BAD_ADDR",
+                                   ntohs(((struct sockaddr_in*)(ixs->ips.ips_addr_s))->sin_port),
+                                   addrtoa(((struct sockaddr_in*)(ixs->ips.ips_addr_d))->sin_addr, 0, bufdst, sizeof(bufdst)) <= ADDRTOA_BUF ? bufdst : "BAD_ADDR",
+                                   ntohs(((struct sockaddr_in*)(ixs->ips.ips_addr_d))->sin_port),
+                                   ixs->ips.ips_said.proto);
+                               
+                       /* increment count of total traps needed */
+                       ipsec_xmit_trap_count++;
+
+                       if (pfkey_acquire(&ixs->ips) == 0) {
+
+                               /* note that we succeeded */
+                               ipsec_xmit_trap_sendcount++;
+                                       
+                               if (ixs->outgoing_said.spi==htonl(SPI_TRAPSUBNET)) {
+                                       /*
+                                        * The spinlock is to prevent any other
+                                        * process from accessing or deleting
+                                        * the eroute while we are using and
+                                        * updating it.
+                                        */
+                                       spin_lock(&eroute_lock);
+                                       ixs->eroute = ipsec_findroute(&ixs->matcher);
+                                       if(ixs->eroute) {
+                                               ixs->eroute->er_said.spi = htonl(SPI_HOLD);
+                                               ixs->eroute->er_first = ixs->skb;
+                                               ixs->skb = NULL;
+                                       }
+                                       spin_unlock(&eroute_lock);
+                               } else if (create_hold_eroute(ixs->eroute,
+                                                             ixs->skb,
+                                                             ixs->iph,
+                                                             ixs->eroute_pid)) {
+                                       ixs->skb = NULL;
+                               } 
+                               /* whether or not the above succeeded, we continue */
+                               
+                       }
+                       ixs->stats->tx_dropped++;
+               }
+               default:
+                       /* XXX what do we do with an unknown shunt spi? */
+                       break;
+               } /* switch (ntohl(ixs->outgoing_said.spi)) */
+               return IPSEC_XMIT_STOLEN;
+       } /* if (ixs->outgoing_said.proto == IPPROTO_INT) */
+       
+       /*
+         The spinlock is to prevent any other process from
+         accessing or deleting the ipsec_sa hash table or any of the
+         ipsec_sa s while we are using and updating them.
+                 
+         This is not optimal, but was relatively straightforward
+         at the time.  A better way to do it has been planned for
+         more than a year, to lock the hash table and put reference
+         counts on each ipsec_sa instead.  This is not likely to happen
+         in KLIPS1 unless a volunteer contributes it, but will be
+         designed into KLIPS2.
+       */
+       spin_lock(&tdb_lock);
+
+       ixs->ipsp = ipsec_sa_getbyid(&ixs->outgoing_said);
+       ixs->sa_len = KLIPS_SATOT(debug_tunnel, &ixs->outgoing_said, 0, ixs->sa_txt, sizeof(ixs->sa_txt));
+
+       if (ixs->ipsp == NULL) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                           "klips_debug:ipsec_xmit_encap_bundle: "
+                           "no ipsec_sa for SA%s: outgoing packet with no SA, dropped.\n",
+                           ixs->sa_len ? ixs->sa_txt : " (error)");
+               if(ixs->stats) {
+                       ixs->stats->tx_dropped++;
+               }
+               bundle_stat = IPSEC_XMIT_SAIDNOTFOUND;
+               goto cleanup;
+       }
+               
+       KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                   "klips_debug:ipsec_xmit_encap_bundle: "
+                   "found ipsec_sa -- SA:<%s%s%s> %s\n",
+                   IPS_XFORM_NAME(ixs->ipsp),
+                   ixs->sa_len ? ixs->sa_txt : " (error)");
+               
+       /*
+        * How much headroom do we need to be able to apply
+        * all the grouped transforms?
+        */
+       ixs->ipsq = ixs->ipsp;  /* save the head of the ipsec_sa chain */
+       while (ixs->ipsp) {
+               if (debug_tunnel & DB_TN_XMIT) {
+               ixs->sa_len = KLIPS_SATOT(debug_tunnel, &ixs->ipsp->ips_said, 0, ixs->sa_txt, sizeof(ixs->sa_txt));
+               if(ixs->sa_len == 0) {
+                       strcpy(ixs->sa_txt, "(error)");
+               }
+               } else {
+                       *ixs->sa_txt = 0;
+                       ixs->sa_len = 0;
+               }
+
+               /* If it is in larval state, drop the packet, we cannot process yet. */
+               if(ixs->ipsp->ips_state == SADB_SASTATE_LARVAL) {
+                       KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                                   "klips_debug:ipsec_xmit_encap_bundle: "
+                                   "ipsec_sa in larval state for SA:<%s%s%s> %s, cannot be used yet, dropping packet.\n",
+                                   IPS_XFORM_NAME(ixs->ipsp),
+                                   ixs->sa_len ? ixs->sa_txt : " (error)");
+                       if(ixs->stats) {
+                               ixs->stats->tx_errors++;
+                       }
+                       bundle_stat = IPSEC_XMIT_SAIDNOTLIVE;
+                       goto cleanup;
+               }
+
+               if(ixs->ipsp->ips_state == SADB_SASTATE_DEAD) {
+                       KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                                   "klips_debug:ipsec_xmit_encap_bundle: "
+                                   "ipsec_sa in dead state for SA:<%s%s%s> %s, can no longer be used, dropping packet.\n",
+                                   IPS_XFORM_NAME(ixs->ipsp),
+                                   ixs->sa_len ? ixs->sa_txt : " (error)");
+                       ixs->stats->tx_errors++;
+                       bundle_stat = IPSEC_XMIT_SAIDNOTLIVE;
+                       goto cleanup;
+               }
+
+               /* If the replay window counter == -1, expire SA, it will roll */
+               if(ixs->ipsp->ips_replaywin && ixs->ipsp->ips_replaywin_lastseq == -1) {
+                       pfkey_expire(ixs->ipsp, 1);
+                       KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                                   "klips_debug:ipsec_xmit_encap_bundle: "
+                                   "replay window counter rolled for SA:<%s%s%s> %s, packet dropped, expiring SA.\n",
+                                   IPS_XFORM_NAME(ixs->ipsp),
+                                   ixs->sa_len ? ixs->sa_txt : " (error)");
+                       ipsec_sa_delchain(ixs->ipsp);
+                       ixs->stats->tx_errors++;
+                       bundle_stat = IPSEC_XMIT_REPLAYROLLED;
+                       goto cleanup;
+               }
+
+               /*
+                * if this is the first time we are using this SA, mark start time,
+                * and offset hard/soft counters by "now" for later checking.
+                */
+#if 0
+               if(ixs->ipsp->ips_life.ipl_usetime.count == 0) {
+                       ixs->ipsp->ips_life.ipl_usetime.count = jiffies;
+                       ixs->ipsp->ips_life.ipl_usetime.hard += jiffies;
+                       ixs->ipsp->ips_life.ipl_usetime.soft += jiffies;
+               }
+#endif
+                         
+
+               if(ipsec_lifetime_check(&ixs->ipsp->ips_life.ipl_bytes, "bytes", ixs->sa_txt, 
+                                       ipsec_life_countbased, ipsec_outgoing, ixs->ipsp) == ipsec_life_harddied ||
+                  ipsec_lifetime_check(&ixs->ipsp->ips_life.ipl_addtime, "addtime",ixs->sa_txt,
+                                       ipsec_life_timebased,  ipsec_outgoing, ixs->ipsp) == ipsec_life_harddied ||
+                  ipsec_lifetime_check(&ixs->ipsp->ips_life.ipl_usetime, "usetime",ixs->sa_txt,
+                                       ipsec_life_timebased,  ipsec_outgoing, ixs->ipsp) == ipsec_life_harddied ||
+                  ipsec_lifetime_check(&ixs->ipsp->ips_life.ipl_packets, "packets",ixs->sa_txt,
+                                       ipsec_life_countbased, ipsec_outgoing, ixs->ipsp) == ipsec_life_harddied) {
+                               
+                       ipsec_sa_delchain(ixs->ipsp);
+                       ixs->stats->tx_errors++;
+                       bundle_stat = IPSEC_XMIT_LIFETIMEFAILED;
+                       goto cleanup;
+               }
+                       
+
+               ixs->headroom = ixs->tailroom = 0;
+               KLIPS_PRINT(debug_tunnel & DB_TN_CROUT,
+                           "klips_debug:ipsec_xmit_encap_bundle: "
+                           "calling room for <%s%s%s>, SA:%s\n", 
+                           IPS_XFORM_NAME(ixs->ipsp),
+                           ixs->sa_len ? ixs->sa_txt : " (error)");
+               switch(ixs->ipsp->ips_said.proto) {
+#ifdef CONFIG_KLIPS_AH
+               case IPPROTO_AH:
+                       ixs->headroom += sizeof(struct ahhdr);
+                       break;
+#endif /* CONFIG_KLIPS_AH */
+#ifdef CONFIG_KLIPS_ESP
+               case IPPROTO_ESP:
+                       ixt_e=ixs->ipsp->ips_alg_enc;
+                       if (ixt_e) {
+                               blocksize = ixt_e->ixt_common.ixt_blocksize;
+                               ixs->headroom += ESP_HEADER_LEN + ixt_e->ixt_common.ixt_support.ias_ivlen/8;
+                       }
+                       else {
+                               ixs->stats->tx_errors++;
+                               bundle_stat = IPSEC_XMIT_ESP_BADALG;
+                               goto cleanup;
+                       }
+
+                       if ((ixt_a=ixs->ipsp->ips_alg_auth)) {
+                               ixs->tailroom += AHHMAC_HASHLEN;
+                       } else
+                       switch(ixs->ipsp->ips_authalg) {
+#ifdef CONFIG_KLIPS_AUTH_HMAC_MD5
+                       case AH_MD5:
+                               ixs->tailroom += AHHMAC_HASHLEN;
+                               break;
+#endif /* CONFIG_KLIPS_AUTH_HMAC_MD5 */
+#ifdef CONFIG_KLIPS_AUTH_HMAC_SHA1
+                       case AH_SHA:
+                               ixs->tailroom += AHHMAC_HASHLEN;
+                               break;
+#endif /* CONFIG_KLIPS_AUTH_HMAC_SHA1 */
+                       case AH_NONE:
+                               break;
+                       default:
+                               ixs->stats->tx_errors++;
+                               bundle_stat = IPSEC_XMIT_AH_BADALG;
+                               goto cleanup;
+                       }                       
+                       ixs->tailroom += blocksize != 1 ?
+                               ((blocksize - ((ixs->pyldsz + 2) % blocksize)) % blocksize) + 2 :
+                               ((4 - ((ixs->pyldsz + 2) % 4)) % 4) + 2;
+#ifdef CONFIG_IPSEC_NAT_TRAVERSAL
+               if ((ixs->ipsp->ips_natt_type) && (!ixs->natt_type)) {
+                       ixs->natt_type = ixs->ipsp->ips_natt_type;
+                       ixs->natt_sport = ixs->ipsp->ips_natt_sport;
+                       ixs->natt_dport = ixs->ipsp->ips_natt_dport;
+                       switch (ixs->natt_type) {
+                               case ESPINUDP_WITH_NON_IKE:
+                                       ixs->natt_head = sizeof(struct udphdr)+(2*sizeof(__u32));
+                                       break;
+                                       
+                               case ESPINUDP_WITH_NON_ESP:
+                                       ixs->natt_head = sizeof(struct udphdr);
+                                       break;
+                                       
+                               default:
+                                 KLIPS_PRINT(debug_tunnel & DB_TN_CROUT
+                                             , "klips_xmit: invalid nat-t type %d"
+                                             , ixs->natt_type);
+                                 bundle_stat = IPSEC_XMIT_ESPUDP_BADTYPE;
+                                 goto cleanup;
+                                             
+                                       break;
+                       }
+                       ixs->tailroom += ixs->natt_head;
+               }
+#endif
+                       break;
+#endif /* !CONFIG_KLIPS_ESP */
+#ifdef CONFIG_KLIPS_IPIP
+               case IPPROTO_IPIP:
+                       ixs->headroom += sizeof(struct iphdr);
+                       break;
+#endif /* !CONFIG_KLIPS_IPIP */
+               case IPPROTO_COMP:
+#ifdef CONFIG_KLIPS_IPCOMP
+                       /*
+                         We can't predict how much the packet will
+                         shrink without doing the actual compression.
+                         We could do it here, if we were the first
+                         encapsulation in the chain.  That might save
+                         us a skb_copy_expand, since we might fit
+                         into the existing skb then.  However, this
+                         would be a bit unclean (and this hack has
+                         bit us once), so we better not do it. After
+                         all, the skb_copy_expand is cheap in
+                         comparison to the actual compression.
+                         At least we know the packet will not grow.
+                       */
+                       break;
+#endif /* CONFIG_KLIPS_IPCOMP */
+               default:
+                       ixs->stats->tx_errors++;
+                       bundle_stat = IPSEC_XMIT_BADPROTO;
+                       goto cleanup;
+               }
+               ixs->ipsp = ixs->ipsp->ips_onext;
+               KLIPS_PRINT(debug_tunnel & DB_TN_CROUT,
+                           "klips_debug:ipsec_xmit_encap_bundle: "
+                           "Required head,tailroom: %d,%d\n", 
+                           ixs->headroom, ixs->tailroom);
+               ixs->max_headroom += ixs->headroom;
+               ixs->max_tailroom += ixs->tailroom;
+               ixs->pyldsz += (ixs->headroom + ixs->tailroom);
+       }
+       ixs->ipsp = ixs->ipsq;  /* restore the head of the ipsec_sa chain */
+               
+       KLIPS_PRINT(debug_tunnel & DB_TN_CROUT,
+                   "klips_debug:ipsec_xmit_encap_bundle: "
+                   "existing head,tailroom: %d,%d before applying xforms with head,tailroom: %d,%d .\n",
+                   skb_headroom(ixs->skb), skb_tailroom(ixs->skb),
+                   ixs->max_headroom, ixs->max_tailroom);
+               
+       ixs->tot_headroom += ixs->max_headroom;
+       ixs->tot_tailroom += ixs->max_tailroom;
+
+       ixs->mtudiff = ixs->cur_mtu + ixs->tot_headroom + ixs->tot_tailroom - ixs->physmtu;
+
+       KLIPS_PRINT(debug_tunnel & DB_TN_CROUT,
+                   "klips_debug:ipsec_xmit_encap_bundle: "
+                   "mtu:%d physmtu:%d tothr:%d tottr:%d mtudiff:%d ippkttotlen:%d\n",
+                   ixs->cur_mtu, ixs->physmtu,
+                   ixs->tot_headroom, ixs->tot_tailroom, ixs->mtudiff, ntohs(ixs->iph->tot_len));
+       if(ixs->cur_mtu == 0 || ixs->mtudiff > 0) {
+               int newmtu = ixs->physmtu - (ixs->tot_headroom + ((ixs->tot_tailroom + 2) & ~7) + 5);
+
+               KLIPS_PRINT(debug_tunnel & DB_TN_CROUT,
+                           "klips_info:ipsec_xmit_encap_bundle: "
+                           "dev %s mtu of %d decreased by %d to %d\n",
+                           ixs->dev ? ixs->dev->name : "ifX",
+                           ixs->cur_mtu,
+                           ixs->cur_mtu - newmtu,
+                           newmtu);
+               ixs->cur_mtu = newmtu;
+
+               /* this would seem to adjust the MTU of the route as well */
+#if 0
+               ixs->skb->dst->pmtu = ixs->prv->mtu; /* RGB */
+#endif /* 0 */
+       }
+
+       /* 
+          If the sender is doing PMTU discovery, and the
+          packet doesn't fit within ixs->prv->mtu, notify him
+          (unless it was an ICMP packet, or it was not the
+          zero-offset packet) and send it anyways.
+
+          Note: buggy firewall configuration may prevent the
+          ICMP packet from getting back.
+       */
+       if(sysctl_ipsec_icmp
+          && ixs->cur_mtu < ntohs(ixs->iph->tot_len)
+          && (ixs->iph->frag_off & __constant_htons(IP_DF)) ) {
+               int notify = ixs->iph->protocol != IPPROTO_ICMP
+                       && (ixs->iph->frag_off & __constant_htons(IP_OFFSET)) == 0;
+                       
+#ifdef IPSEC_obey_DF
+               KLIPS_PRINT(debug_tunnel & DB_TN_CROUT,
+                           "klips_debug:ipsec_xmit_encap_bundle: "
+                           "fragmentation needed and DF set; %sdropping packet\n",
+                           notify ? "sending ICMP and " : "");
+               if (notify)
+                       ICMP_SEND(ixs->skb,
+                                 ICMP_DEST_UNREACH,
+                                 ICMP_FRAG_NEEDED,
+                                 ixs->cur_mtu,
+                                 ixs->physdev);
+               ixs->stats->tx_errors++;
+               bundle_stat = IPSEC_XMIT_CANNOTFRAG;
+               goto cleanup;
+#else /* IPSEC_obey_DF */
+               KLIPS_PRINT(debug_tunnel & DB_TN_CROUT,
+                           "klips_debug:ipsec_xmit_encap_bundle: "
+                           "fragmentation needed and DF set; %spassing packet\n",
+                           notify ? "sending ICMP and " : "");
+               if (notify)
+                       ICMP_SEND(ixs->skb,
+                                 ICMP_DEST_UNREACH,
+                                 ICMP_FRAG_NEEDED,
+                                 ixs->cur_mtu,
+                                 ixs->physdev);
+#endif /* IPSEC_obey_DF */
+       }
+               
+#ifdef MSS_HACK
+       /*
+        * If this is a transport mode TCP packet with
+        * SYN set, determine an effective MSS based on 
+        * AH/ESP overheads determined above.
+        */
+       if (ixs->iph->protocol == IPPROTO_TCP 
+           && ixs->outgoing_said.proto != IPPROTO_IPIP) {
+               struct tcphdr *tcph = ixs->skb->h.th;
+               if (tcph->syn && !tcph->ack) {
+                       if(!ipsec_adjust_mss(ixs->skb, tcph, ixs->cur_mtu)) {
+                               printk(KERN_WARNING
+                                      "klips_warning:ipsec_xmit_encap_bundle: "
+                                      "ipsec_adjust_mss() failed\n");
+                               ixs->stats->tx_errors++;
+                               bundle_stat = IPSEC_XMIT_MSSERR;
+                               goto cleanup;
+                       }
+               }
+       }
+#endif /* MSS_HACK */
+
+#ifdef CONFIG_IPSEC_NAT_TRAVERSAL
+      if ((ixs->natt_type) && (ixs->outgoing_said.proto != IPPROTO_IPIP)) {
+             /**
+              * NAT-Traversal and Transport Mode:
+              *   we need to correct TCP/UDP checksum
+              *
+              * If we've got NAT-OA, we can fix checksum without recalculation.
+              * If we don't we can zero udp checksum.
+              */
+             __u32 natt_oa = ixs->ipsp->ips_natt_oa ?
+                     ((struct sockaddr_in*)(ixs->ipsp->ips_natt_oa))->sin_addr.s_addr : 0;
+             unsigned int pkt_len = skb_tail_pointer(ixs->skb) - (unsigned char *)ixs->iph;
+             __u16 data_len = pkt_len - (ixs->iph->ihl << 2);
+             switch (ixs->iph->protocol) {
+                     case IPPROTO_TCP:
+                             if (data_len >= sizeof(struct tcphdr)) {
+                                     struct tcphdr *tcp = (struct tcphdr *)((__u32 *)ixs->iph+ixs->iph->ihl);
+                                     if (natt_oa) {
+                                             __u32 buff[2] = { ~ixs->iph->daddr, natt_oa };
+                                             KLIPS_PRINT(debug_tunnel,
+                                                     "klips_debug:ipsec_tunnel_start_xmit: "
+                                                     "NAT-T & TRANSPORT: "
+                                                     "fix TCP checksum using NAT-OA\n");
+                                             tcp->check = csum_fold(
+                                                     csum_partial((unsigned char *)buff, sizeof(buff),
+                                                     tcp->check^0xffff));
+                                     }
+                                     else {
+                                             KLIPS_PRINT(debug_tunnel,
+                                                     "klips_debug:ipsec_tunnel_start_xmit: "
+                                                     "NAT-T & TRANSPORT: do not recalc TCP checksum\n");
+                                     }
+                             }
+                             else {
+                                     KLIPS_PRINT(debug_tunnel,
+                                             "klips_debug:ipsec_tunnel_start_xmit: "
+                                             "NAT-T & TRANSPORT: can't fix TCP checksum\n");
+                             }
+                             break;
+                     case IPPROTO_UDP:
+                             if (data_len >= sizeof(struct udphdr)) {
+                                     struct udphdr *udp = (struct udphdr *)((__u32 *)ixs->iph+ixs->iph->ihl);
+                                     if (udp->check == 0) {
+                                             KLIPS_PRINT(debug_tunnel,
+                                                     "klips_debug:ipsec_tunnel_start_xmit: "
+                                                     "NAT-T & TRANSPORT: UDP checksum already 0\n");
+                                     }
+                                     else if (natt_oa) {
+                                             __u32 buff[2] = { ~ixs->iph->daddr, natt_oa };
+                                             KLIPS_PRINT(debug_tunnel,
+                                                     "klips_debug:ipsec_tunnel_start_xmit: "
+                                                     "NAT-T & TRANSPORT: "
+                                                     "fix UDP checksum using NAT-OA\n");
+                                             udp->check = csum_fold(
+                                                     csum_partial((unsigned char *)buff, sizeof(buff),
+                                                     udp->check^0xffff));
+                                     }
+                                     else {
+                                             KLIPS_PRINT(debug_tunnel,
+                                                     "klips_debug:ipsec_tunnel_start_xmit: "
+                                                     "NAT-T & TRANSPORT: zero UDP checksum\n");
+                                             udp->check = 0;
+                                     }
+                             }
+                             else {
+                                     KLIPS_PRINT(debug_tunnel,
+                                             "klips_debug:ipsec_tunnel_start_xmit: "
+                                             "NAT-T & TRANSPORT: can't fix UDP checksum\n");
+                             }
+                             break;
+                     default:
+                             KLIPS_PRINT(debug_tunnel,
+                                     "klips_debug:ipsec_tunnel_start_xmit: "
+                                     "NAT-T & TRANSPORT: non TCP/UDP packet -- do nothing\n");
+                             break;
+             }
+      }
+#endif /* CONFIG_IPSEC_NAT_TRAVERSAL */
+
+       if(!ixs->hard_header_stripped && ixs->hard_header_len>0) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                           "klips_debug:ipsec_xmit_encap_bundle: "
+                           "allocating %d bytes for hardheader.\n",
+                           ixs->hard_header_len);
+               if((ixs->saved_header = kmalloc(ixs->hard_header_len, GFP_ATOMIC)) == NULL) {
+                       printk(KERN_WARNING "klips_debug:ipsec_xmit_encap_bundle: "
+                              "Failed, tried to allocate %d bytes for temp hard_header.\n", 
+                              ixs->hard_header_len);
+                       ixs->stats->tx_errors++;
+                       bundle_stat = IPSEC_XMIT_ERRMEMALLOC;
+                       goto cleanup;
+               }
+               {
+                       int i;
+                       for (i = 0; i < ixs->hard_header_len; i++) {
+                               ixs->saved_header[i] = ixs->skb->data[i];
+                       }
+               }
+               if(ixs->skb->len < ixs->hard_header_len) {
+                       printk(KERN_WARNING "klips_error:ipsec_xmit_encap_bundle: "
+                              "tried to skb_pull hhlen=%d, %d available.  This should never happen, please report.\n",
+                              ixs->hard_header_len, (int)(ixs->skb->len));
+                       ixs->stats->tx_errors++;
+                       bundle_stat = IPSEC_XMIT_ESP_PUSHPULLERR;
+                       goto cleanup;
+               }
+               skb_pull(ixs->skb, ixs->hard_header_len);
+               ixs->hard_header_stripped = 1;
+                       
+/*                     ixs->iph = (struct iphdr *) (ixs->skb->data); */
+               KLIPS_PRINT(debug_tunnel & DB_TN_CROUT,
+                           "klips_debug:ipsec_xmit_encap_bundle: "
+                           "head,tailroom: %d,%d after hard_header stripped.\n",
+                           skb_headroom(ixs->skb), skb_tailroom(ixs->skb));
+               KLIPS_IP_PRINT(debug_tunnel & DB_TN_CROUT, ixs->iph);
+       } else {
+               KLIPS_PRINT(debug_tunnel & DB_TN_CROUT,
+                           "klips_debug:ipsec_xmit_encap_bundle: "
+                           "hard header already stripped.\n");
+       }
+               
+       ixs->ll_headroom = (ixs->hard_header_len + 15) & ~15;
+
+       if ((skb_headroom(ixs->skb) >= ixs->max_headroom + 2 * ixs->ll_headroom) && 
+           (skb_tailroom(ixs->skb) >= ixs->max_tailroom)
+#ifndef NET_21
+           && ixs->skb->free
+#endif /* !NET_21 */
+               ) {
+               KLIPS_PRINT(debug_tunnel & DB_TN_CROUT,
+                           "klips_debug:ipsec_xmit_encap_bundle: "
+                           "data fits in existing skb\n");
+       } else {
+               struct sk_buff* tskb;
+
+               if(!ixs->oskb) {
+                       ixs->oskb = ixs->skb;
+               }
+
+               tskb = skb_copy_expand(ixs->skb,
+                                      /* The need for 2 * link layer length here remains unexplained...RGB */
+                                      ixs->max_headroom + 2 * ixs->ll_headroom,
+                                      ixs->max_tailroom,
+                                      GFP_ATOMIC);
+
+               if(tskb && ixs->skb->sk) {
+                       skb_set_owner_w(tskb, ixs->skb->sk);
+               }
+
+               if(ixs->skb != ixs->oskb) {
+                       ipsec_kfree_skb(ixs->skb);
+               }
+               ixs->skb = tskb;
+               if (!ixs->skb) {
+                       printk(KERN_WARNING
+                              "klips_debug:ipsec_xmit_encap_bundle: "
+                              "Failed, tried to allocate %d head and %d tailroom\n", 
+                              ixs->max_headroom, ixs->max_tailroom);
+                       ixs->stats->tx_errors++;
+                       bundle_stat = IPSEC_XMIT_ERRSKBALLOC;
+                       goto cleanup;
+               }
+               KLIPS_PRINT(debug_tunnel & DB_TN_CROUT,
+                           "klips_debug:ipsec_xmit_encap_bundle: "
+                           "head,tailroom: %d,%d after allocation\n",
+                           skb_headroom(ixs->skb), skb_tailroom(ixs->skb));
+       }
+#ifdef CONFIG_KLIPS_DEBUG              
+       if(debug_tunnel & DB_TN_ENCAP) {
+               ipsec_print_ip(ixs->iph);
+       }
+#endif
+
+       /*
+        * Apply grouped transforms to packet
+        */
+       while (ixs->ipsp) {
+               enum ipsec_xmit_value encap_stat = IPSEC_XMIT_OK;
+
+               encap_stat = ipsec_xmit_encap_once(ixs);
+#ifdef CONFIG_KLIPS_DEBUG
+               if(debug_tunnel & DB_TN_ENCAP) {
+                       ipsec_print_ip(ixs->iph);
+               }
+#endif
+
+               if(encap_stat != IPSEC_XMIT_OK) {
+                       KLIPS_PRINT(debug_tunnel & DB_TN_XMIT,
+                                   "klips_debug:ipsec_xmit_encap_bundle: encap_once failed: %d\n",
+                                   encap_stat);
+                               
+                       bundle_stat = IPSEC_XMIT_ENCAPFAIL;
+                       goto cleanup;
+               }
+       }
+
+       /* we are done with this SA */
+       ipsec_sa_put(ixs->ipsp); 
+
+       /* end encapsulation loop here XXX */
+ cleanup:
+       spin_unlock(&tdb_lock);
+       return bundle_stat;
+}
+
+/*
+ * $Log: ipsec_xmit.c,v $
+ * Revision 1.20.2.13  2007-10-30 21:38:56  paul
+ * Use skb_tail_pointer [dhr]
+ *
+ * Revision 1.20.2.12  2007-10-28 00:26:03  paul
+ * Start of fix for 2.6.22+ kernels and skb_tail_pointer()
+ *
+ * Revision 1.20.2.11  2007/10/22 15:40:45  paul
+ * Missing #ifdef CONFIG_KLIPS_ALG [davidm]
+ *
+ * Revision 1.20.2.10  2007/09/05 02:56:10  paul
+ * Use the new ipsec_kversion macros by David to deal with 2.6.22 kernels.
+ * Fixes based on David McCullough patch.
+ *
+ * Revision 1.20.2.9  2007/07/06 17:18:43  paul
+ * Fix for authentication field on sent packets has size equals to zero when
+ * using custom auth algorithms. This is bug #811. Patch by "iamscared".
+ *
+ * Revision 1.20.2.8  2006/10/06 21:39:26  paul
+ * Fix for 2.6.18+ only include linux/config.h if AUTOCONF_INCLUDED is not
+ * set. This is defined through autoconf.h which is included through the
+ * linux kernel build macros.
+ *
+ * Revision 1.20.2.7  2006/08/24 03:02:01  paul
+ * Compile fixes for when CONFIG_KLIPS_DEBUG is not set. (bug #642)
+ *
+ * Revision 1.20.2.6  2006/07/07 22:09:49  paul
+ * From: Bart Trojanowski <bart@xelerance.com>
+ * Removing a left over '#else' that split another '#if/#endif' block in two.
+ *
+ * Revision 1.20.2.5  2006/07/07 15:43:17  paul
+ * From: Bart Trojanowski <bart@xelerance.com>
+ * improved protocol detection in ipsec_print_ip() -- a debug aid.
+ *
+ * Revision 1.20.2.4  2006/04/20 16:33:07  mcr
+ * remove all of CONFIG_KLIPS_ALG --- one can no longer build without it.
+ * Fix in-kernel module compilation. Sub-makefiles do not work.
+ *
+ * Revision 1.20.2.3  2005/11/29 21:52:57  ken
+ * Fix for #518 MTU issues
+ *
+ * Revision 1.20.2.2  2005/11/27 21:41:03  paul
+ * Pull down TTL fixes from head. this fixes "Unknown symbol sysctl_ip_default_ttl"in for klips as module.
+ *
+ * Revision 1.20.2.1  2005/08/27 23:40:00  paul
+ * recommited HAVE_SOCK_SECURITY fixes for linux 2.6.13
+ *
+ * Revision 1.20  2005/07/12 15:39:27  paul
+ * include asm/uaccess.h for VERIFY_WRITE
+ *
+ * Revision 1.19  2005/05/24 01:02:35  mcr
+ *     some refactoring/simplification of situation where alg
+ *     is not found.
+ *
+ * Revision 1.18  2005/05/23 23:52:33  mcr
+ *     adjust comments, add additional debugging.
+ *
+ * Revision 1.17  2005/05/23 22:57:23  mcr
+ *     removed explicit 3DES support.
+ *
+ * Revision 1.16  2005/05/21 03:29:15  mcr
+ *     fixed warning about unused zeroes if AH is off.
+ *
+ * Revision 1.15  2005/05/20 16:47:59  mcr
+ *     include asm/checksum.h to get ip_fast_csum macro.
+ *
+ * Revision 1.14  2005/05/11 01:43:03  mcr
+ *     removed "poor-man"s OOP in favour of proper C structures.
+ *
+ * Revision 1.13  2005/04/29 05:10:22  mcr
+ *     removed from extraenous includes to make unit testing easier.
+ *
+ * Revision 1.12  2005/04/15 01:28:34  mcr
+ *     use ipsec_dmp_block.
+ *
+ * Revision 1.11  2005/01/26 00:50:35  mcr
+ *     adjustment of confusion of CONFIG_IPSEC_NAT vs CONFIG_KLIPS_NAT,
+ *     and make sure that NAT_TRAVERSAL is set as well to match
+ *     userspace compiles of code.
+ *
+ * Revision 1.10  2004/09/13 17:55:21  ken
+ * MD5* -> osMD5*
+ *
+ * Revision 1.9  2004/07/10 19:11:18  mcr
+ *     CONFIG_IPSEC -> CONFIG_KLIPS.
+ *
+ * Revision 1.8  2004/04/06 02:49:26  mcr
+ *     pullup of algo code from alg-branch.
+ *
+ * Revision 1.7  2004/02/03 03:13:41  mcr
+ *     mark invalid encapsulation states.
+ *
+ * Revision 1.6.2.1  2003/12/22 15:25:52  jjo
+ *      Merged algo-0.8.1-rc11-test1 into alg-branch
+ *
+ * Revision 1.6  2003/12/10 01:14:27  mcr
+ *     NAT-traversal patches to KLIPS.
+ *
+ * Revision 1.5  2003/10/31 02:27:55  mcr
+ *     pulled up port-selector patches and sa_id elimination.
+ *
+ * Revision 1.4.4.2  2003/10/29 01:37:39  mcr
+ *     when creating %hold from %trap, only make the %hold as
+ *     specific as the %trap was - so if the protocol and ports
+ *     were wildcards, then the %hold will be too.
+ *
+ * Revision 1.4.4.1  2003/09/21 13:59:56  mcr
+ *     pre-liminary X.509 patch - does not yet pass tests.
+ *
+ * Revision 1.4  2003/06/20 02:28:10  mcr
+ *     misstype of variable name, not detected by module build.
+ *
+ * Revision 1.3  2003/06/20 01:42:21  mcr
+ *     added counters to measure how many ACQUIREs we send to pluto,
+ *     and how many are successfully sent.
+ *
+ * Revision 1.2  2003/04/03 17:38:35  rgb
+ * Centralised ipsec_kfree_skb and ipsec_dev_{get,put}.
+ * Normalised coding style.
+ * Simplified logic and reduced duplication of code.
+ *
+ * Revision 1.1  2003/02/12 19:31:23  rgb
+ * Refactored from ipsec_tunnel.c
+ *
+ * Local Variables:
+ * c-file-style: "linux"
+ * End:
+ *
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/match586.S     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,357 @@
+/* match.s -- Pentium-optimized version of longest_match()
+ * Written for zlib 1.1.2
+ * Copyright (C) 1998 Brian Raiter <breadbox@muppetlabs.com>
+ *
+ * This is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License.
+ */
+
+#ifndef NO_UNDERLINE
+#define        match_init      _ipcomp_match_init
+#define        longest_match   _ipcomp_longest_match
+#else
+#define match_init     ipcomp_match_init
+#define longest_match  ipcomp_longest_match
+#endif
+
+#define        MAX_MATCH       (258)
+#define        MIN_MATCH       (3)
+#define        MIN_LOOKAHEAD   (MAX_MATCH + MIN_MATCH + 1)
+#define        MAX_MATCH_8     ((MAX_MATCH + 7) & ~7)
+
+/* stack frame offsets */
+
+#define        wmask                   0       /* local copy of s->wmask       */
+#define        window                  4       /* local copy of s->window      */
+#define        windowbestlen           8       /* s->window + bestlen          */
+#define        chainlenscanend         12      /* high word: current chain len */
+                                       /* low word: last bytes sought  */
+#define        scanstart               16      /* first two bytes of string    */
+#define        scanalign               20      /* dword-misalignment of string */
+#define        nicematch               24      /* a good enough match size     */
+#define        bestlen                 28      /* size of best match so far    */
+#define        scan                    32      /* ptr to string wanting match  */
+
+#define        LocalVarsSize           (36)
+/*     saved ebx               36 */
+/*     saved edi               40 */
+/*     saved esi               44 */
+/*     saved ebp               48 */
+/*     return address          52 */
+#define        deflatestate            56      /* the function arguments       */
+#define        curmatch                60
+
+/* Offsets for fields in the deflate_state structure. These numbers
+ * are calculated from the definition of deflate_state, with the
+ * assumption that the compiler will dword-align the fields. (Thus,
+ * changing the definition of deflate_state could easily cause this
+ * program to crash horribly, without so much as a warning at
+ * compile time. Sigh.)
+ */
+#define        dsWSize                 36
+#define        dsWMask                 44
+#define        dsWindow                48
+#define        dsPrev                  56
+#define        dsMatchLen              88
+#define        dsPrevMatch             92
+#define        dsStrStart              100
+#define        dsMatchStart            104
+#define        dsLookahead             108
+#define        dsPrevLen               112
+#define        dsMaxChainLen           116
+#define        dsGoodMatch             132
+#define        dsNiceMatch             136
+
+
+.file "match.S"
+
+.globl match_init, longest_match
+
+.text
+
+/* uInt longest_match(deflate_state *deflatestate, IPos curmatch) */
+
+longest_match:
+
+/* Save registers that the compiler may be using, and adjust %esp to   */
+/* make room for our stack frame.                                      */
+
+               pushl   %ebp
+               pushl   %edi
+               pushl   %esi
+               pushl   %ebx
+               subl    $LocalVarsSize, %esp
+
+/* Retrieve the function arguments. %ecx will hold cur_match           */
+/* throughout the entire function. %edx will hold the pointer to the   */
+/* deflate_state structure during the function's setup (before         */
+/* entering the main loop).                                            */
+
+               movl    deflatestate(%esp), %edx
+               movl    curmatch(%esp), %ecx
+
+/* if ((uInt)nice_match > s->lookahead) nice_match = s->lookahead;     */
+
+               movl    dsNiceMatch(%edx), %eax
+               movl    dsLookahead(%edx), %ebx
+               cmpl    %eax, %ebx
+               jl      LookaheadLess
+               movl    %eax, %ebx
+LookaheadLess: movl    %ebx, nicematch(%esp)
+
+/* register Bytef *scan = s->window + s->strstart;                     */
+
+               movl    dsWindow(%edx), %esi
+               movl    %esi, window(%esp)
+               movl    dsStrStart(%edx), %ebp
+               lea     (%esi,%ebp), %edi
+               movl    %edi, scan(%esp)
+
+/* Determine how many bytes the scan ptr is off from being             */
+/* dword-aligned.                                                      */
+
+               movl    %edi, %eax
+               negl    %eax
+               andl    $3, %eax
+               movl    %eax, scanalign(%esp)
+
+/* IPos limit = s->strstart > (IPos)MAX_DIST(s) ?                      */
+/*     s->strstart - (IPos)MAX_DIST(s) : NIL;                          */
+
+               movl    dsWSize(%edx), %eax
+               subl    $MIN_LOOKAHEAD, %eax
+               subl    %eax, %ebp
+               jg      LimitPositive
+               xorl    %ebp, %ebp
+LimitPositive:
+
+/* unsigned chain_length = s->max_chain_length;                                */
+/* if (s->prev_length >= s->good_match) {                              */
+/*     chain_length >>= 2;                                             */
+/* }                                                                   */
+
+               movl    dsPrevLen(%edx), %eax
+               movl    dsGoodMatch(%edx), %ebx
+               cmpl    %ebx, %eax
+               movl    dsMaxChainLen(%edx), %ebx
+               jl      LastMatchGood
+               shrl    $2, %ebx
+LastMatchGood:
+
+/* chainlen is decremented once beforehand so that the function can    */
+/* use the sign flag instead of the zero flag for the exit test.       */
+/* It is then shifted into the high word, to make room for the scanend */
+/* scanend value, which it will always accompany.                      */
+
+               decl    %ebx
+               shll    $16, %ebx
+
+/* int best_len = s->prev_length;                                      */
+
+               movl    dsPrevLen(%edx), %eax
+               movl    %eax, bestlen(%esp)
+
+/* Store the sum of s->window + best_len in %esi locally, and in %esi. */
+
+               addl    %eax, %esi
+               movl    %esi, windowbestlen(%esp)
+
+/* register ush scan_start = *(ushf*)scan;                             */
+/* register ush scan_end   = *(ushf*)(scan+best_len-1);                        */
+
+               movw    (%edi), %bx
+               movw    %bx, scanstart(%esp)
+               movw    -1(%edi,%eax), %bx
+               movl    %ebx, chainlenscanend(%esp)
+
+/* Posf *prev = s->prev;                                               */
+/* uInt wmask = s->w_mask;                                             */
+
+               movl    dsPrev(%edx), %edi
+               movl    dsWMask(%edx), %edx
+               mov     %edx, wmask(%esp)
+
+/* Jump into the main loop.                                            */
+
+               jmp     LoopEntry
+
+.balign 16
+
+/* do {
+ *     match = s->window + cur_match;
+ *     if (*(ushf*)(match+best_len-1) != scan_end ||
+ *         *(ushf*)match != scan_start) continue;
+ *     [...]
+ * } while ((cur_match = prev[cur_match & wmask]) > limit
+ *          && --chain_length != 0);
+ *
+ * Here is the inner loop of the function. The function will spend the
+ * majority of its time in this loop, and majority of that time will
+ * be spent in the first ten instructions.
+ *
+ * Within this loop:
+ * %ebx = chainlenscanend - i.e., ((chainlen << 16) | scanend)
+ * %ecx = curmatch
+ * %edx = curmatch & wmask
+ * %esi = windowbestlen - i.e., (window + bestlen)
+ * %edi = prev
+ * %ebp = limit
+ *
+ * Two optimization notes on the choice of instructions:
+ *
+ * The first instruction uses a 16-bit address, which costs an extra,
+ * unpairable cycle. This is cheaper than doing a 32-bit access and
+ * zeroing the high word, due to the 3-cycle misalignment penalty which
+ * would occur half the time. This also turns out to be cheaper than
+ * doing two separate 8-bit accesses, as the memory is so rarely in the
+ * L1 cache.
+ *
+ * The window buffer, however, apparently spends a lot of time in the
+ * cache, and so it is faster to retrieve the word at the end of the
+ * match string with two 8-bit loads. The instructions that test the
+ * word at the beginning of the match string, however, are executed
+ * much less frequently, and there it was cheaper to use 16-bit
+ * instructions, which avoided the necessity of saving off and
+ * subsequently reloading one of the other registers.
+ */
+LookupLoop:
+                                                       /* 1 U & V  */
+               movw    (%edi,%edx,2), %cx              /* 2 U pipe */
+               movl    wmask(%esp), %edx               /* 2 V pipe */
+               cmpl    %ebp, %ecx                      /* 3 U pipe */
+               jbe     LeaveNow                        /* 3 V pipe */
+               subl    $0x00010000, %ebx               /* 4 U pipe */
+               js      LeaveNow                        /* 4 V pipe */
+LoopEntry:     movb    -1(%esi,%ecx), %al              /* 5 U pipe */
+               andl    %ecx, %edx                      /* 5 V pipe */
+               cmpb    %bl, %al                        /* 6 U pipe */
+               jnz     LookupLoop                      /* 6 V pipe */
+               movb    (%esi,%ecx), %ah
+               cmpb    %bh, %ah
+               jnz     LookupLoop
+               movl    window(%esp), %eax
+               movw    (%eax,%ecx), %ax
+               cmpw    scanstart(%esp), %ax
+               jnz     LookupLoop
+
+/* Store the current value of chainlen.                                        */
+
+               movl    %ebx, chainlenscanend(%esp)
+
+/* Point %edi to the string under scrutiny, and %esi to the string we  */
+/* are hoping to match it up with. In actuality, %esi and %edi are     */
+/* both pointed (MAX_MATCH_8 - scanalign) bytes ahead, and %edx is     */
+/* initialized to -(MAX_MATCH_8 - scanalign).                          */
+
+               movl    window(%esp), %esi
+               movl    scan(%esp), %edi
+               addl    %ecx, %esi
+               movl    scanalign(%esp), %eax
+               movl    $(-MAX_MATCH_8), %edx
+               lea     MAX_MATCH_8(%edi,%eax), %edi
+               lea     MAX_MATCH_8(%esi,%eax), %esi
+
+/* Test the strings for equality, 8 bytes at a time. At the end,
+ * adjust %edx so that it is offset to the exact byte that mismatched.
+ *
+ * We already know at this point that the first three bytes of the
+ * strings match each other, and they can be safely passed over before
+ * starting the compare loop. So what this code does is skip over 0-3
+ * bytes, as much as necessary in order to dword-align the %edi
+ * pointer. (%esi will still be misaligned three times out of four.)
+ *
+ * It should be confessed that this loop usually does not represent
+ * much of the total running time. Replacing it with a more
+ * straightforward "rep cmpsb" would not drastically degrade
+ * performance.
+ */
+LoopCmps:
+               movl    (%esi,%edx), %eax
+               movl    (%edi,%edx), %ebx
+               xorl    %ebx, %eax
+               jnz     LeaveLoopCmps
+               movl    4(%esi,%edx), %eax
+               movl    4(%edi,%edx), %ebx
+               xorl    %ebx, %eax
+               jnz     LeaveLoopCmps4
+               addl    $8, %edx
+               jnz     LoopCmps
+               jmp     LenMaximum
+LeaveLoopCmps4:        addl    $4, %edx
+LeaveLoopCmps: testl   $0x0000FFFF, %eax
+               jnz     LenLower
+               addl    $2, %edx
+               shrl    $16, %eax
+LenLower:      subb    $1, %al
+               adcl    $0, %edx
+
+/* Calculate the length of the match. If it is longer than MAX_MATCH,  */
+/* then automatically accept it as the best possible match and leave.  */
+
+               lea     (%edi,%edx), %eax
+               movl    scan(%esp), %edi
+               subl    %edi, %eax
+               cmpl    $MAX_MATCH, %eax
+               jge     LenMaximum
+
+/* If the length of the match is not longer than the best match we     */
+/* have so far, then forget it and return to the lookup loop.          */
+
+               movl    deflatestate(%esp), %edx
+               movl    bestlen(%esp), %ebx
+               cmpl    %ebx, %eax
+               jg      LongerMatch
+               movl    chainlenscanend(%esp), %ebx
+               movl    windowbestlen(%esp), %esi
+               movl    dsPrev(%edx), %edi
+               movl    wmask(%esp), %edx
+               andl    %ecx, %edx
+               jmp     LookupLoop
+
+/*         s->match_start = cur_match;                                 */
+/*         best_len = len;                                             */
+/*         if (len >= nice_match) break;                               */
+/*         scan_end = *(ushf*)(scan+best_len-1);                       */
+
+LongerMatch:   movl    nicematch(%esp), %ebx
+               movl    %eax, bestlen(%esp)
+               movl    %ecx, dsMatchStart(%edx)
+               cmpl    %ebx, %eax
+               jge     LeaveNow
+               movl    window(%esp), %esi
+               addl    %eax, %esi
+               movl    %esi, windowbestlen(%esp)
+               movl    chainlenscanend(%esp), %ebx
+               movw    -1(%edi,%eax), %bx
+               movl    dsPrev(%edx), %edi
+               movl    %ebx, chainlenscanend(%esp)
+               movl    wmask(%esp), %edx
+               andl    %ecx, %edx
+               jmp     LookupLoop
+
+/* Accept the current string, with the maximum possible length.                */
+
+LenMaximum:    movl    deflatestate(%esp), %edx
+               movl    $MAX_MATCH, bestlen(%esp)
+               movl    %ecx, dsMatchStart(%edx)
+
+/* if ((uInt)best_len <= s->lookahead) return (uInt)best_len;          */
+/* return s->lookahead;                                                        */
+
+LeaveNow:
+               movl    deflatestate(%esp), %edx
+               movl    bestlen(%esp), %ebx
+               movl    dsLookahead(%edx), %eax
+               cmpl    %eax, %ebx
+               jg      LookaheadRet
+               movl    %ebx, %eax
+LookaheadRet:
+
+/* Restore the stack and return from whence we came.                   */
+
+               addl    $LocalVarsSize, %esp
+               popl    %ebx
+               popl    %esi
+               popl    %edi
+               popl    %ebp
+match_init:    ret
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/match686.S     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,330 @@
+/* match.s -- Pentium-Pro-optimized version of longest_match()
+ * Written for zlib 1.1.2
+ * Copyright (C) 1998 Brian Raiter <breadbox@muppetlabs.com>
+ *
+ * This is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License.
+ */
+
+#ifndef NO_UNDERLINE
+#define        match_init      _ipcomp_match_init
+#define        longest_match   _ipcomp_longest_match
+#else
+#define match_init     ipcomp_match_init
+#define longest_match  ipcomp_longest_match
+#endif
+
+#define        MAX_MATCH       (258)
+#define        MIN_MATCH       (3)
+#define        MIN_LOOKAHEAD   (MAX_MATCH + MIN_MATCH + 1)
+#define        MAX_MATCH_8     ((MAX_MATCH + 7) & ~7)
+
+/* stack frame offsets */
+
+#define        chainlenwmask           0       /* high word: current chain len */
+                                       /* low word: s->wmask           */
+#define        window                  4       /* local copy of s->window      */
+#define        windowbestlen           8       /* s->window + bestlen          */
+#define        scanstart               16      /* first two bytes of string    */
+#define        scanend                 12      /* last two bytes of string     */
+#define        scanalign               20      /* dword-misalignment of string */
+#define        nicematch               24      /* a good enough match size     */
+#define        bestlen                 28      /* size of best match so far    */
+#define        scan                    32      /* ptr to string wanting match  */
+
+#define        LocalVarsSize           (36)
+/*     saved ebx               36 */
+/*     saved edi               40 */
+/*     saved esi               44 */
+/*     saved ebp               48 */
+/*     return address          52 */
+#define        deflatestate            56      /* the function arguments       */
+#define        curmatch                60
+
+/* Offsets for fields in the deflate_state structure. These numbers
+ * are calculated from the definition of deflate_state, with the
+ * assumption that the compiler will dword-align the fields. (Thus,
+ * changing the definition of deflate_state could easily cause this
+ * program to crash horribly, without so much as a warning at
+ * compile time. Sigh.)
+ */
+#define        dsWSize                 36
+#define        dsWMask                 44
+#define        dsWindow                48
+#define        dsPrev                  56
+#define        dsMatchLen              88
+#define        dsPrevMatch             92
+#define        dsStrStart              100
+#define        dsMatchStart            104
+#define        dsLookahead             108
+#define        dsPrevLen               112
+#define        dsMaxChainLen           116
+#define        dsGoodMatch             132
+#define        dsNiceMatch             136
+
+
+.file "match.S"
+
+.globl match_init, longest_match
+
+.text
+
+/* uInt longest_match(deflate_state *deflatestate, IPos curmatch) */
+
+longest_match:
+
+/* Save registers that the compiler may be using, and adjust %esp to   */
+/* make room for our stack frame.                                      */
+
+               pushl   %ebp
+               pushl   %edi
+               pushl   %esi
+               pushl   %ebx
+               subl    $LocalVarsSize, %esp
+
+/* Retrieve the function arguments. %ecx will hold cur_match           */
+/* throughout the entire function. %edx will hold the pointer to the   */
+/* deflate_state structure during the function's setup (before         */
+/* entering the main loop).                                            */
+
+               movl    deflatestate(%esp), %edx
+               movl    curmatch(%esp), %ecx
+
+/* uInt wmask = s->w_mask;                                             */
+/* unsigned chain_length = s->max_chain_length;                                */
+/* if (s->prev_length >= s->good_match) {                              */
+/*     chain_length >>= 2;                                             */
+/* }                                                                   */
+
+               movl    dsPrevLen(%edx), %eax
+               movl    dsGoodMatch(%edx), %ebx
+               cmpl    %ebx, %eax
+               movl    dsWMask(%edx), %eax
+               movl    dsMaxChainLen(%edx), %ebx
+               jl      LastMatchGood
+               shrl    $2, %ebx
+LastMatchGood:
+
+/* chainlen is decremented once beforehand so that the function can    */
+/* use the sign flag instead of the zero flag for the exit test.       */
+/* It is then shifted into the high word, to make room for the wmask   */
+/* value, which it will always accompany.                              */
+
+               decl    %ebx
+               shll    $16, %ebx
+               orl     %eax, %ebx
+               movl    %ebx, chainlenwmask(%esp)
+
+/* if ((uInt)nice_match > s->lookahead) nice_match = s->lookahead;     */
+
+               movl    dsNiceMatch(%edx), %eax
+               movl    dsLookahead(%edx), %ebx
+               cmpl    %eax, %ebx
+               jl      LookaheadLess
+               movl    %eax, %ebx
+LookaheadLess: movl    %ebx, nicematch(%esp)
+
+/* register Bytef *scan = s->window + s->strstart;                     */
+
+               movl    dsWindow(%edx), %esi
+               movl    %esi, window(%esp)
+               movl    dsStrStart(%edx), %ebp
+               lea     (%esi,%ebp), %edi
+               movl    %edi, scan(%esp)
+
+/* Determine how many bytes the scan ptr is off from being             */
+/* dword-aligned.                                                      */
+
+               movl    %edi, %eax
+               negl    %eax
+               andl    $3, %eax
+               movl    %eax, scanalign(%esp)
+
+/* IPos limit = s->strstart > (IPos)MAX_DIST(s) ?                      */
+/*     s->strstart - (IPos)MAX_DIST(s) : NIL;                          */
+
+               movl    dsWSize(%edx), %eax
+               subl    $MIN_LOOKAHEAD, %eax
+               subl    %eax, %ebp
+               jg      LimitPositive
+               xorl    %ebp, %ebp
+LimitPositive:
+
+/* int best_len = s->prev_length;                                      */
+
+               movl    dsPrevLen(%edx), %eax
+               movl    %eax, bestlen(%esp)
+
+/* Store the sum of s->window + best_len in %esi locally, and in %esi. */
+
+               addl    %eax, %esi
+               movl    %esi, windowbestlen(%esp)
+
+/* register ush scan_start = *(ushf*)scan;                             */
+/* register ush scan_end   = *(ushf*)(scan+best_len-1);                        */
+/* Posf *prev = s->prev;                                               */
+
+               movzwl  (%edi), %ebx
+               movl    %ebx, scanstart(%esp)
+               movzwl  -1(%edi,%eax), %ebx
+               movl    %ebx, scanend(%esp)
+               movl    dsPrev(%edx), %edi
+
+/* Jump into the main loop.                                            */
+
+               movl    chainlenwmask(%esp), %edx
+               jmp     LoopEntry
+
+.balign 16
+
+/* do {
+ *     match = s->window + cur_match;
+ *     if (*(ushf*)(match+best_len-1) != scan_end ||
+ *         *(ushf*)match != scan_start) continue;
+ *     [...]
+ * } while ((cur_match = prev[cur_match & wmask]) > limit
+ *          && --chain_length != 0);
+ *
+ * Here is the inner loop of the function. The function will spend the
+ * majority of its time in this loop, and majority of that time will
+ * be spent in the first ten instructions.
+ *
+ * Within this loop:
+ * %ebx = scanend
+ * %ecx = curmatch
+ * %edx = chainlenwmask - i.e., ((chainlen << 16) | wmask)
+ * %esi = windowbestlen - i.e., (window + bestlen)
+ * %edi = prev
+ * %ebp = limit
+ */
+LookupLoop:
+               andl    %edx, %ecx
+               movzwl  (%edi,%ecx,2), %ecx
+               cmpl    %ebp, %ecx
+               jbe     LeaveNow
+               subl    $0x00010000, %edx
+               js      LeaveNow
+LoopEntry:     movzwl  -1(%esi,%ecx), %eax
+               cmpl    %ebx, %eax
+               jnz     LookupLoop
+               movl    window(%esp), %eax
+               movzwl  (%eax,%ecx), %eax
+               cmpl    scanstart(%esp), %eax
+               jnz     LookupLoop
+
+/* Store the current value of chainlen.                                        */
+
+               movl    %edx, chainlenwmask(%esp)
+
+/* Point %edi to the string under scrutiny, and %esi to the string we  */
+/* are hoping to match it up with. In actuality, %esi and %edi are     */
+/* both pointed (MAX_MATCH_8 - scanalign) bytes ahead, and %edx is     */
+/* initialized to -(MAX_MATCH_8 - scanalign).                          */
+
+               movl    window(%esp), %esi
+               movl    scan(%esp), %edi
+               addl    %ecx, %esi
+               movl    scanalign(%esp), %eax
+               movl    $(-MAX_MATCH_8), %edx
+               lea     MAX_MATCH_8(%edi,%eax), %edi
+               lea     MAX_MATCH_8(%esi,%eax), %esi
+
+/* Test the strings for equality, 8 bytes at a time. At the end,
+ * adjust %edx so that it is offset to the exact byte that mismatched.
+ *
+ * We already know at this point that the first three bytes of the
+ * strings match each other, and they can be safely passed over before
+ * starting the compare loop. So what this code does is skip over 0-3
+ * bytes, as much as necessary in order to dword-align the %edi
+ * pointer. (%esi will still be misaligned three times out of four.)
+ *
+ * It should be confessed that this loop usually does not represent
+ * much of the total running time. Replacing it with a more
+ * straightforward "rep cmpsb" would not drastically degrade
+ * performance.
+ */
+LoopCmps:
+               movl    (%esi,%edx), %eax
+               xorl    (%edi,%edx), %eax
+               jnz     LeaveLoopCmps
+               movl    4(%esi,%edx), %eax
+               xorl    4(%edi,%edx), %eax
+               jnz     LeaveLoopCmps4
+               addl    $8, %edx
+               jnz     LoopCmps
+               jmp     LenMaximum
+LeaveLoopCmps4:        addl    $4, %edx
+LeaveLoopCmps: testl   $0x0000FFFF, %eax
+               jnz     LenLower
+               addl    $2, %edx
+               shrl    $16, %eax
+LenLower:      subb    $1, %al
+               adcl    $0, %edx
+
+/* Calculate the length of the match. If it is longer than MAX_MATCH,  */
+/* then automatically accept it as the best possible match and leave.  */
+
+               lea     (%edi,%edx), %eax
+               movl    scan(%esp), %edi
+               subl    %edi, %eax
+               cmpl    $MAX_MATCH, %eax
+               jge     LenMaximum
+
+/* If the length of the match is not longer than the best match we     */
+/* have so far, then forget it and return to the lookup loop.          */
+
+               movl    deflatestate(%esp), %edx
+               movl    bestlen(%esp), %ebx
+               cmpl    %ebx, %eax
+               jg      LongerMatch
+               movl    windowbestlen(%esp), %esi
+               movl    dsPrev(%edx), %edi
+               movl    scanend(%esp), %ebx
+               movl    chainlenwmask(%esp), %edx
+               jmp     LookupLoop
+
+/*         s->match_start = cur_match;                                 */
+/*         best_len = len;                                             */
+/*         if (len >= nice_match) break;                               */
+/*         scan_end = *(ushf*)(scan+best_len-1);                       */
+
+LongerMatch:   movl    nicematch(%esp), %ebx
+               movl    %eax, bestlen(%esp)
+               movl    %ecx, dsMatchStart(%edx)
+               cmpl    %ebx, %eax
+               jge     LeaveNow
+               movl    window(%esp), %esi
+               addl    %eax, %esi
+               movl    %esi, windowbestlen(%esp)
+               movzwl  -1(%edi,%eax), %ebx
+               movl    dsPrev(%edx), %edi
+               movl    %ebx, scanend(%esp)
+               movl    chainlenwmask(%esp), %edx
+               jmp     LookupLoop
+
+/* Accept the current string, with the maximum possible length.                */
+
+LenMaximum:    movl    deflatestate(%esp), %edx
+               movl    $MAX_MATCH, bestlen(%esp)
+               movl    %ecx, dsMatchStart(%edx)
+
+/* if ((uInt)best_len <= s->lookahead) return (uInt)best_len;          */
+/* return s->lookahead;                                                        */
+
+LeaveNow:
+               movl    deflatestate(%esp), %edx
+               movl    bestlen(%esp), %ebx
+               movl    dsLookahead(%edx), %eax
+               cmpl    %eax, %ebx
+               jg      LookaheadRet
+               movl    %ebx, %eax
+LookaheadRet:
+
+/* Restore the stack and return from whence we came.                   */
+
+               addl    $LocalVarsSize, %esp
+               popl    %ebx
+               popl    %esi
+               popl    %edi
+               popl    %ebp
+match_init:    ret
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/null/ipsec_alg_null.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,147 @@
+/*
+ * ipsec_alg NULL cipher stubs
+ *
+ * Author: JuanJo Ciarlante <jjo-ipsec@mendoza.gov.ar>
+ * 
+ * $Id: ipsec_alg_null.c,v 1.1.2.2 2008-01-11 21:07:23 paul Exp $
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ */
+#ifndef AUTOCONF_INCLUDED
+#include <linux/config.h>
+#endif
+#include <linux/version.h>
+
+/*     
+ *     special case: ipsec core modular with this static algo inside:
+ *     must avoid MODULE magic for this file
+ */
+#if defined(CONFIG_KLIPS_MODULE) && defined(CONFIG_KLIPS_ENC_NULL)
+#undef MODULE
+#endif
+
+#include <linux/module.h>
+#include <linux/init.h>
+
+#include <linux/kernel.h> /* printk() */
+#include <linux/errno.h>  /* error codes */
+#include <linux/types.h>  /* size_t */
+#include <linux/string.h>
+
+/* Check if __exit is defined, if not null it */
+#ifndef __exit
+#define __exit
+#endif
+
+/*     Low freeswan header coupling    */
+#include "openswan/ipsec_alg.h"
+
+#define ESP_NULL               11      /* from ipsec drafts */
+#define ESP_NULL_BLK_LEN       1
+
+MODULE_AUTHOR("JuanJo Ciarlante <jjo-ipsec@mendoza.gov.ar>");
+static int debug_null=0;
+static int test_null=0;
+#ifdef module_param
+module_param(debug_null, int, 0600);
+module_param(test_null, int, 0600);
+#else
+MODULE_PARM(debug_null, "i");
+MODULE_PARM(test_null, "i");
+#endif
+
+typedef int null_context;
+
+struct null_eks{
+       null_context null_ctx;
+};
+static int _null_set_key(struct ipsec_alg_enc *alg, 
+                       __u8 * key_e, const __u8 * key, 
+                       size_t keysize) {
+       null_context *ctx=&((struct null_eks*)key_e)->null_ctx;
+       if (debug_null > 0)
+               printk(KERN_DEBUG "klips_debug:_null_set_key:"
+                               "key_e=%p key=%p keysize=%d\n",
+                               key_e, key, keysize);
+       *ctx = 1;
+       return 0;
+}
+static int _null_cbc_encrypt(struct ipsec_alg_enc *alg, 
+               __u8 * key_e, __u8 * in, int ilen, const __u8 * iv, 
+               int encrypt) {
+       null_context *ctx=&((struct null_eks*)key_e)->null_ctx;
+       if (debug_null > 0)
+               printk(KERN_DEBUG "klips_debug:_null_cbc_encrypt:"
+                               "key_e=%p in=%p ilen=%d iv=%p encrypt=%d\n",
+                               key_e, in, ilen, iv, encrypt);
+       (*ctx)++;
+       return ilen;
+}
+static struct ipsec_alg_enc ipsec_alg_NULL = {
+       ixt_common: { ixt_version:      IPSEC_ALG_VERSION,
+                     ixt_refcnt:       ATOMIC_INIT(0),
+                     ixt_name:         "null",
+                     ixt_blocksize:    ESP_NULL_BLK_LEN,
+                     ixt_support: {
+                       ias_exttype:    IPSEC_ALG_TYPE_ENCRYPT,
+                       ias_id:         ESP_NULL,
+                       ias_ivlen:      0,
+                       ias_keyminbits: 0,
+                       ias_keymaxbits: 0,
+               },
+       },
+#if defined(CONFIG_KLIPS_ENC_NULL_MODULE)
+       ixt_module:     THIS_MODULE,
+#endif
+       ixt_e_keylen:   0,
+       ixt_e_ctx_size: sizeof(null_context),
+       ixt_e_set_key:  _null_set_key,
+       ixt_e_cbc_encrypt:_null_cbc_encrypt,
+};
+
+#if defined(CONFIG_KLIPS_ENC_NULL_MODULE)
+IPSEC_ALG_MODULE_INIT_MOD( ipsec_null_init )
+#else
+IPSEC_ALG_MODULE_INIT_STATIC( ipsec_null_init )
+#endif
+{
+       int ret, test_ret;
+       ret=register_ipsec_alg_enc(&ipsec_alg_NULL);
+       printk("ipsec_null_init(alg_type=%d alg_id=%d name=%s): ret=%d\n", 
+                       ipsec_alg_NULL.ixt_common.ixt_support.ias_exttype,
+                       ipsec_alg_NULL.ixt_common.ixt_support.ias_id,
+                       ipsec_alg_NULL.ixt_common.ixt_name, 
+                       ret);
+       if (ret==0 && test_null) {
+               test_ret=ipsec_alg_test(
+                               ipsec_alg_NULL.ixt_common.ixt_support.ias_exttype,
+                               ipsec_alg_NULL.ixt_common.ixt_support.ias_id,
+                               test_null);
+               printk("ipsec_null_init(alg_type=%d alg_id=%d): test_ret=%d\n", 
+                               ipsec_alg_NULL.ixt_common.ixt_support.ias_exttype,
+                               ipsec_alg_NULL.ixt_common.ixt_support.ias_id,
+                               test_ret);
+       }
+       return ret;
+}
+#if defined(CONFIG_KLIPS_ENC_NULL_MODULE)
+IPSEC_ALG_MODULE_EXIT_MOD( ipsec_null_fini )
+#else
+IPSEC_ALG_MODULE_EXIT_STATIC( ipsec_null_fini )
+#endif
+{
+       unregister_ipsec_alg_enc(&ipsec_alg_NULL);
+       return;
+}
+#ifdef MODULE_LICENSE
+MODULE_LICENSE("GPL");
+#endif
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/pfkey_v2.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,2043 @@
+/*
+ * @(#) RFC2367 PF_KEYv2 Key management API domain socket I/F
+ * Copyright (C) 1999, 2000, 2001  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id: pfkey_v2.c,v 1.97.2.16 2007-10-31 19:57:41 paul Exp $
+ */
+
+/*
+ *             Template from /usr/src/linux-2.0.36/net/unix/af_unix.c.
+ *             Hints from /usr/src/linux-2.0.36/net/ipv4/udp.c.
+ */
+
+#define __NO_VERSION__
+#include <linux/module.h>
+#include <linux/version.h>
+#ifndef AUTOCONF_INCLUDED
+#include <linux/config.h>
+#endif
+#include <linux/kernel.h>
+
+#include "openswan/ipsec_param.h"
+
+#include <linux/major.h>
+#include <linux/signal.h>
+#include <linux/sched.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/stat.h>
+#include <linux/socket.h>
+#include <linux/un.h>
+#include <linux/fcntl.h>
+#include <linux/termios.h>
+#include <linux/socket.h>
+#include <linux/sockios.h>
+#include <linux/net.h> /* struct socket */
+#include <linux/in.h>
+#include <linux/fs.h>
+#ifdef MALLOC_SLAB
+# include <linux/slab.h> /* kmalloc() */
+#else /* MALLOC_SLAB */
+# include <linux/malloc.h> /* kmalloc() */
+#endif /* MALLOC_SLAB */
+#include <asm/segment.h>
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+#include <net/sock.h> /* struct sock */
+#include <net/protocol.h>
+/* #include <net/tcp.h> */
+#include <net/af_unix.h>
+#ifdef CONFIG_PROC_FS
+# include <linux/proc_fs.h>
+#endif /* CONFIG_PROC_FS */
+
+#include <linux/types.h>
+ 
+#include <openswan.h>
+
+#include "openswan/radij.h"
+#include "openswan/ipsec_encap.h"
+#include "openswan/ipsec_sa.h"
+
+#include <pfkeyv2.h>
+#include <pfkey.h>
+
+#include "openswan/ipsec_proto.h"
+#include "openswan/ipsec_kern24.h"
+
+#ifdef CONFIG_KLIPS_DEBUG
+int debug_pfkey = 0;
+extern int sysctl_ipsec_debug_verbose;
+#endif /* CONFIG_KLIPS_DEBUG */
+
+#define SENDERR(_x) do { error = -(_x); goto errlab; } while (0)
+
+#ifndef SOCKOPS_WRAPPED
+#define SOCKOPS_WRAPPED(name) name
+#endif /* SOCKOPS_WRAPPED */
+
+#ifdef NET_26
+static rwlock_t pfkey_sock_lock = RW_LOCK_UNLOCKED;
+HLIST_HEAD(pfkey_sock_list);
+static DECLARE_WAIT_QUEUE_HEAD(pfkey_sock_wait);
+static atomic_t pfkey_sock_users = ATOMIC_INIT(0);
+#else
+struct sock *pfkey_sock_list = NULL;
+#endif
+
+struct supported_list *pfkey_supported_list[SADB_SATYPE_MAX+1];
+
+struct socket_list *pfkey_open_sockets = NULL;
+struct socket_list *pfkey_registered_sockets[SADB_SATYPE_MAX+1];
+
+int pfkey_msg_interp(struct sock *, struct sadb_msg *, struct sadb_msg **);
+
+DEBUG_NO_STATIC int pfkey_create(struct socket *sock, int protocol);
+DEBUG_NO_STATIC int pfkey_shutdown(struct socket *sock, int mode);
+DEBUG_NO_STATIC int pfkey_release(struct socket *sock);
+
+#ifdef NET_26
+DEBUG_NO_STATIC int pfkey_sendmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t len);
+DEBUG_NO_STATIC int pfkey_recvmsg(struct kiocb *kiocb, struct socket *sock, struct msghdr *msg
+                                 , size_t size, int flags);
+#else
+DEBUG_NO_STATIC int pfkey_sendmsg(struct socket *sock, struct msghdr *msg, int len, struct scm_cookie *scm);
+DEBUG_NO_STATIC int pfkey_recvmsg(struct socket *sock, struct msghdr *msg, int size, int flags, struct scm_cookie *scm);
+#endif
+
+struct net_proto_family pfkey_family_ops = {
+#ifdef NETDEV_23
+       .family = PF_KEY,
+       .create = pfkey_create,
+#ifdef NET_26
+       .owner  = THIS_MODULE,
+#endif
+#else
+       PF_KEY,
+       pfkey_create
+#endif
+};
+
+struct proto_ops SOCKOPS_WRAPPED(pfkey_ops) = {
+#ifdef NETDEV_23
+       family:         PF_KEY,
+#ifdef NET_26
+       owner:          THIS_MODULE,
+#endif
+       release:        pfkey_release,
+       bind:           sock_no_bind,
+       connect:        sock_no_connect,
+       socketpair:     sock_no_socketpair,
+       accept:         sock_no_accept,
+       getname:        sock_no_getname,
+       poll:           datagram_poll,
+       ioctl:          sock_no_ioctl,
+       listen:         sock_no_listen,
+       shutdown:       pfkey_shutdown,
+       setsockopt:     sock_no_setsockopt,
+       getsockopt:     sock_no_getsockopt,
+       sendmsg:        pfkey_sendmsg,
+       recvmsg:        pfkey_recvmsg,
+       mmap:           sock_no_mmap,
+#else /* NETDEV_23 */
+       PF_KEY,
+       sock_no_dup,
+       pfkey_release,
+       sock_no_bind,
+       sock_no_connect,
+       sock_no_socketpair,
+       sock_no_accept,
+       sock_no_getname,
+       datagram_poll,
+       sock_no_ioctl,
+       sock_no_listen,
+       pfkey_shutdown,
+       sock_no_setsockopt,
+       sock_no_getsockopt,
+       sock_no_fcntl,
+       pfkey_sendmsg,
+       pfkey_recvmsg
+#endif /* NETDEV_23 */
+};
+
+#ifdef NETDEV_23
+#include <linux/smp_lock.h>
+SOCKOPS_WRAP(pfkey, PF_KEY);
+#endif  /* NETDEV_23 */
+
+#ifdef NET_26
+static void pfkey_sock_list_grab(void)
+{
+       write_lock_bh(&pfkey_sock_lock);
+
+       if (atomic_read(&pfkey_sock_users)) {
+               DECLARE_WAITQUEUE(wait, current);
+
+               add_wait_queue_exclusive(&pfkey_sock_wait, &wait);
+               for(;;) {
+                       set_current_state(TASK_UNINTERRUPTIBLE);
+                       if (atomic_read(&pfkey_sock_users) == 0)
+                               break;
+                       write_unlock_bh(&pfkey_sock_lock);
+                       schedule();
+                       write_lock_bh(&pfkey_sock_lock);
+               }
+
+               __set_current_state(TASK_RUNNING);
+               remove_wait_queue(&pfkey_sock_wait, &wait);
+       }
+}
+
+static __inline__ void pfkey_sock_list_ungrab(void)
+{
+       write_unlock_bh(&pfkey_sock_lock);
+       wake_up(&pfkey_sock_wait);
+}
+
+static __inline__ void pfkey_lock_sock_list(void)
+{
+       /* read_lock() synchronizes us to pfkey_table_grab */
+
+       read_lock(&pfkey_sock_lock);
+       atomic_inc(&pfkey_sock_users);
+       read_unlock(&pfkey_sock_lock);
+}
+
+static __inline__ void pfkey_unlock_sock_list(void)
+{
+       if (atomic_dec_and_test(&pfkey_sock_users))
+               wake_up(&pfkey_sock_wait);
+}
+#endif
+
+int
+pfkey_list_remove_socket(struct socket *socketp, struct socket_list **sockets)
+{
+       struct socket_list *socket_listp,*prev;
+
+       if(!socketp) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_list_remove_socket: "
+                           "NULL socketp handed in, failed.\n");
+               return -EINVAL;
+       }
+
+       if(!sockets) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_list_remove_socket: "
+                           "NULL sockets list handed in, failed.\n");
+               return -EINVAL;
+       }
+
+       socket_listp = *sockets;
+       prev = NULL;
+       
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_list_remove_socket: "
+                   "removing sock=0p%p\n",
+                   socketp);
+       
+       while(socket_listp != NULL) {
+               if(socket_listp->socketp == socketp) {
+                       if(prev != NULL) {
+                               prev->next = socket_listp->next;
+                       } else {
+                               *sockets = socket_listp->next;
+                       }
+                       
+                       kfree((void*)socket_listp);
+                       
+                       break;
+               }
+               prev = socket_listp;
+               socket_listp = socket_listp->next;
+       }
+
+       return 0;
+}
+
+int
+pfkey_list_insert_socket(struct socket *socketp, struct socket_list **sockets)
+{
+       struct socket_list *socket_listp;
+
+       if(!socketp) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_list_insert_socket: "
+                           "NULL socketp handed in, failed.\n");
+               return -EINVAL;
+       }
+
+       if(!sockets) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_list_insert_socket: "
+                           "NULL sockets list handed in, failed.\n");
+               return -EINVAL;
+       }
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_list_insert_socket: "
+                   "allocating %lu bytes for socketp=0p%p\n",
+                   (unsigned long) sizeof(struct socket_list),
+                   socketp);
+       
+       if((socket_listp = (struct socket_list *)kmalloc(sizeof(struct socket_list), GFP_KERNEL)) == NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_list_insert_socket: "
+                           "memory allocation error.\n");
+               return -ENOMEM;
+       }
+       
+       socket_listp->socketp = socketp;
+       socket_listp->next = *sockets;
+       *sockets = socket_listp;
+
+       return 0;
+}
+  
+int
+pfkey_list_remove_supported(struct ipsec_alg_supported *supported, struct supported_list **supported_list)
+{
+       struct supported_list *supported_listp = *supported_list, *prev = NULL;
+       
+       if(!supported) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_list_remove_supported: "
+                           "NULL supported handed in, failed.\n");
+               return -EINVAL;
+       }
+
+       if(!supported_list) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_list_remove_supported: "
+                           "NULL supported_list handed in, failed.\n");
+               return -EINVAL;
+       }
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_list_remove_supported: "
+                   "removing supported=0p%p\n",
+                   supported);
+       
+       while(supported_listp != NULL) {
+               if(supported_listp->supportedp == supported) {
+                       if(prev != NULL) {
+                               prev->next = supported_listp->next;
+                       } else {
+                               *supported_list = supported_listp->next;
+                       }
+                       
+                       kfree((void*)supported_listp);
+                       
+                       break;
+               }
+               prev = supported_listp;
+               supported_listp = supported_listp->next;
+       }
+
+       return 0;
+}
+
+int
+pfkey_list_insert_supported(struct ipsec_alg_supported *supported
+                           , struct supported_list **supported_list)
+{
+       struct supported_list *supported_listp;
+
+       if(!supported) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_list_insert_supported: "
+                           "NULL supported handed in, failed.\n");
+               return -EINVAL;
+       }
+
+       if(!supported_list) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_list_insert_supported: "
+                           "NULL supported_list handed in, failed.\n");
+               return -EINVAL;
+       }
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_list_insert_supported: "
+                   "allocating %lu bytes for incoming, supported=0p%p, supported_list=0p%p\n",
+                   (unsigned long) sizeof(struct supported_list),
+                   supported,
+                   supported_list);
+       
+       supported_listp = (struct supported_list *)kmalloc(sizeof(struct supported_list), GFP_KERNEL);
+
+       if(supported_listp == NULL)
+       {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_list_insert_supported: "
+                           "memory allocation error.\n");
+               return -ENOMEM;
+       }
+       
+       supported_listp->supportedp = supported;
+       supported_listp->next = *supported_list;
+       *supported_list = supported_listp;
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_list_insert_supported: "
+                   "outgoing, supported=0p%p, supported_list=0p%p\n",
+                   supported,
+                   supported_list);
+
+       return 0;
+}
+  
+#ifdef NET_26
+DEBUG_NO_STATIC void
+pfkey_insert_socket(struct sock *sk)
+{
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_insert_socket: "
+                   "sk=0p%p\n",
+                   sk);
+       pfkey_sock_list_grab();
+       sk_add_node(sk, &pfkey_sock_list);
+       pfkey_sock_list_ungrab();
+}
+
+DEBUG_NO_STATIC void
+pfkey_remove_socket(struct sock *sk)
+{
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_remove_socket: 0p%p\n", sk);
+       pfkey_sock_list_grab();
+       sk_del_node_init(sk);
+       pfkey_sock_list_ungrab();
+       return;
+}
+#else
+
+DEBUG_NO_STATIC void
+pfkey_insert_socket(struct sock *sk)
+{
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_insert_socket: "
+                   "sk=0p%p\n",
+                   sk);
+       cli();
+       sk->next=pfkey_sock_list;
+       pfkey_sock_list=sk;
+       sti();
+}
+DEBUG_NO_STATIC void
+pfkey_remove_socket(struct sock *sk)
+{
+       struct sock **s;
+
+       s = NULL;
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_remove_socket: .\n");
+
+       cli();
+       s=&pfkey_sock_list;
+
+       while(*s!=NULL) {
+               if(*s==sk) {
+                       *s=sk->next;
+                       sk->next=NULL;
+                       sti();
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_remove_socket: "
+                                   "succeeded.\n");
+                       return;
+               }
+               s=&((*s)->next);
+       }
+       sti();
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_remove_socket: "
+                   "not found.\n");
+       return;
+}
+#endif
+
+DEBUG_NO_STATIC void
+pfkey_destroy_socket(struct sock *sk)
+{
+       struct sk_buff *skb;
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_destroy_socket: 0p%p\n",sk);
+       pfkey_remove_socket(sk);
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_destroy_socket: "
+                   "pfkey_remove_socket called, sk=0p%p\n",sk);
+       
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_destroy_socket: "
+                   "sk(0p%p)->(&0p%p)receive_queue.{next=0p%p,prev=0p%p}.\n",
+                   sk,
+                   &(sk->sk_receive_queue),
+                   sk->sk_receive_queue.next,
+                   sk->sk_receive_queue.prev);
+
+       while(sk && ((skb=skb_dequeue(&(sk->sk_receive_queue)))!=NULL)) {
+#ifdef CONFIG_KLIPS_DEBUG
+               if(debug_pfkey && sysctl_ipsec_debug_verbose) {
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_destroy_socket: "
+                                   "skb=0p%p dequeued.\n", skb);
+                       printk(KERN_INFO "klips_debug:pfkey_destroy_socket: "
+                              "pfkey_skb contents:");
+                       printk(" next:0p%p", skb->next);
+                       printk(" prev:0p%p", skb->prev);
+                       printk(" sk:0p%p", skb->sk);
+                       printk(" dev:0p%p", skb->dev);
+                       if(skb->dev) {
+                               if(skb->dev->name) {
+                                       printk(" dev->name:%s", skb->dev->name);
+                               } else {
+                                       printk(" dev->name:NULL?");
+                               }
+                       } else {
+                               printk(" dev:NULL");
+                       }
+                       printk(" h:0p%p", skb_transport_header(skb));
+                       printk(" nh:0p%p", skb_network_header(skb));
+                       printk(" mac:0p%p", skb_mac_header(skb));
+                       printk(" dst:0p%p", skb->dst);
+                       if(sysctl_ipsec_debug_verbose) {
+                               int i;
+                               
+                               printk(" cb");
+                               for(i=0; i<48; i++) {
+                                       printk(":%2x", skb->cb[i]);
+                               }
+                       }
+                       printk(" len:%d", skb->len);
+                       printk(" csum:%d", skb->csum);
+#ifndef NETDEV_23
+                       printk(" used:%d", skb->used);
+                       printk(" is_clone:%d", skb->is_clone);
+#endif /* NETDEV_23 */
+                       printk(" cloned:%d", skb->cloned);
+                       printk(" pkt_type:%d", skb->pkt_type);
+                       printk(" ip_summed:%d", skb->ip_summed);
+                       printk(" priority:%d", skb->priority);
+                       printk(" protocol:%d", skb->protocol);
+#ifdef HAVE_SOCK_SECURITY
+                       printk(" security:%d", skb->security);
+#endif
+                       printk(" truesize:%d", skb->truesize);
+                       printk(" head:0p%p", skb->head);
+                       printk(" data:0p%p", skb->data);
+                       printk(" tail:0p%p", skb_tail_pointer(skb));
+                       printk(" end:0p%p", skb_end_pointer(skb));
+                       if(sysctl_ipsec_debug_verbose) {
+                               unsigned char* i;
+                               printk(" data");
+                               for(i = skb->head; i < skb_end_pointer(skb); i++) {
+                                       printk(":%2x", (unsigned char)(*(i)));
+                               }
+                       }
+                       printk(" destructor:0p%p", skb->destructor);
+                       printk("\n");
+               }
+#endif /* CONFIG_KLIPS_DEBUG */
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_destroy_socket: "
+                           "skb=0p%p freed.\n",
+                           skb);
+               ipsec_kfree_skb(skb);
+       }
+
+#ifdef NET_26
+       sock_set_flag(sk, SOCK_DEAD);
+#else
+       sk->dead = 1;
+#endif
+       sk_free(sk);
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_destroy_socket: destroyed.\n");
+}
+
+int
+pfkey_upmsg(struct socket *sock, struct sadb_msg *pfkey_msg)
+{
+       int error = 0;
+       struct sk_buff * skb = NULL;
+       struct sock *sk;
+
+       if(sock == NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_upmsg: "
+                           "NULL socket passed in.\n");
+               return -EINVAL;
+       }
+
+       if(pfkey_msg == NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_upmsg: "
+                           "NULL pfkey_msg passed in.\n");
+               return -EINVAL;
+       }
+
+       sk = sock->sk;
+
+       if(sk == NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_upmsg: "
+                           "NULL sock passed in.\n");
+               return -EINVAL;
+       }
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_upmsg: "
+                   "allocating %d bytes...\n",
+                   (int)(pfkey_msg->sadb_msg_len * IPSEC_PFKEYv2_ALIGN));
+       if(!(skb = alloc_skb(pfkey_msg->sadb_msg_len * IPSEC_PFKEYv2_ALIGN, GFP_ATOMIC) )) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_upmsg: "
+                           "no buffers left to send up a message.\n");
+               return -ENOBUFS;
+       }
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_upmsg: "
+                   "...allocated at 0p%p.\n",
+                   skb);
+       
+       skb->dev = NULL;
+       
+       if(skb_tailroom(skb) < pfkey_msg->sadb_msg_len * IPSEC_PFKEYv2_ALIGN) {
+               printk(KERN_WARNING "klips_error:pfkey_upmsg: "
+                      "tried to skb_put %ld, %d available.  This should never happen, please report.\n",
+                      (unsigned long int)pfkey_msg->sadb_msg_len * IPSEC_PFKEYv2_ALIGN,
+                      skb_tailroom(skb));
+               ipsec_kfree_skb(skb);
+               return -ENOBUFS;
+       }
+       skb_set_transport_header(skb, ipsec_skb_offset(skb, skb_put(skb, pfkey_msg->sadb_msg_len * IPSEC_PFKEYv2_ALIGN)));
+       memcpy(skb_transport_header(skb), pfkey_msg, pfkey_msg->sadb_msg_len * IPSEC_PFKEYv2_ALIGN);
+
+       if((error = sock_queue_rcv_skb(sk, skb)) < 0) {
+               skb->sk=NULL;
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_upmsg: "
+                           "error=%d calling sock_queue_rcv_skb with skb=0p%p.\n",
+                           error,
+                           skb);
+               ipsec_kfree_skb(skb);
+               return error;
+       }
+       return error;
+}
+
+#ifdef NET_26_12_SKALLOC
+static struct proto key_proto = {
+       .name     = "KEY",
+       .owner    = THIS_MODULE,
+       .obj_size = sizeof(struct sock),
+       
+};
+#endif
+
+DEBUG_NO_STATIC int
+pfkey_create(struct socket *sock, int protocol)
+{
+       struct sock *sk;
+
+       if(sock == NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_create: "
+                           "socket NULL.\n");
+               return -EINVAL;
+       }
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_create: "
+                   "sock=0p%p type:%d state:%d flags:%ld protocol:%d\n",
+                   sock,
+                   sock->type,
+                   (unsigned int)(sock->state),
+                   sock->flags, protocol);
+
+       if(sock->type != SOCK_RAW) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_create: "
+                           "only SOCK_RAW supported.\n");
+               return -ESOCKTNOSUPPORT;
+       }
+
+       if(protocol != PF_KEY_V2) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_create: "
+                           "protocol not PF_KEY_V2.\n");
+               return -EPROTONOSUPPORT;
+       }
+
+       if((current->uid != 0)) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_create: "
+                           "must be root to open pfkey sockets.\n");
+               return -EACCES;
+       }
+
+       sock->state = SS_UNCONNECTED;
+
+       KLIPS_INC_USE;
+
+#ifdef NET_26
+#ifdef NET_26_12_SKALLOC
+       sk=(struct sock *)sk_alloc(PF_KEY, GFP_KERNEL, &key_proto, 1);
+#else
+       sk=(struct sock *)sk_alloc(PF_KEY, GFP_KERNEL, 1, NULL);
+#endif
+#else
+       /* 2.4 interface */
+       sk=(struct sock *)sk_alloc(PF_KEY, GFP_KERNEL, 1);
+#endif
+
+       if(sk == NULL)
+       {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_create: "
+                           "Out of memory trying to allocate.\n");
+               KLIPS_DEC_USE;
+               return -ENOMEM;
+       }
+
+       sock_init_data(sock, sk);
+
+       sk->sk_destruct = NULL;
+       sk->sk_reuse = 1;
+       sock->ops = &pfkey_ops;
+
+       sk->sk_family = PF_KEY;
+/*     sk->num = protocol; */
+       sk->sk_protocol = protocol;
+       key_pid(sk) = current->pid;
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_create: "
+                   "sock->fasync_list=0p%p sk->sleep=0p%p.\n",
+                   sock->fasync_list,
+                   sk->sk_sleep);
+
+       pfkey_insert_socket(sk);
+       pfkey_list_insert_socket(sock, &pfkey_open_sockets);
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_create: "
+                   "Socket sock=0p%p sk=0p%p initialised.\n", sock, sk);
+       return 0;
+}
+
+DEBUG_NO_STATIC int
+#ifdef NETDEV_23
+pfkey_release(struct socket *sock)
+#else /* NETDEV_23 */
+pfkey_release(struct socket *sock, struct socket *peersock)
+#endif /* NETDEV_23 */
+{
+       struct sock *sk;
+       int i;
+
+       if(sock==NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_release: "
+                           "No socket attached.\n");
+               return 0; /* -EINVAL; */
+       }
+               
+       sk=sock->sk;
+       
+       /* May not have data attached */
+       if(sk==NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_release: "
+                           "No sk attached to sock=0p%p.\n", sock);
+               return 0; /* -EINVAL; */
+       }
+               
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_release: "
+                   "sock=0p%p sk=0p%p\n", sock, sk);
+
+       if(sock_flag(sk, SOCK_DEAD))
+               if(sk->sk_state_change) {
+                       sk->sk_state_change(sk);
+               }
+
+       sock->sk = NULL;
+
+       /* Try to flush out this socket. Throw out buffers at least */
+       pfkey_destroy_socket(sk);
+       pfkey_list_remove_socket(sock, &pfkey_open_sockets);
+       for(i = SADB_SATYPE_UNSPEC; i <= SADB_SATYPE_MAX; i++) {
+               pfkey_list_remove_socket(sock, &(pfkey_registered_sockets[i]));
+       }
+
+       KLIPS_DEC_USE;
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_release: "
+                   "succeeded.\n");
+
+       return 0;
+}
+
+DEBUG_NO_STATIC int
+pfkey_shutdown(struct socket *sock, int mode)
+{
+       struct sock *sk;
+
+       if(sock == NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_shutdown: "
+                           "NULL socket passed in.\n");
+               return -EINVAL;
+       }
+
+       sk=sock->sk;
+       
+       if(sk == NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_shutdown: "
+                           "No sock attached to socket.\n");
+               return -EINVAL;
+       }
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_shutdown: "
+                   "mode=%x.\n", mode);
+       mode++;
+       
+       if(mode&SEND_SHUTDOWN) {
+               sk->sk_shutdown|=SEND_SHUTDOWN;
+               sk->sk_state_change(sk);
+       }
+
+       if(mode&RCV_SHUTDOWN) {
+               sk->sk_shutdown|=RCV_SHUTDOWN;
+               sk->sk_state_change(sk);
+       }
+       return 0;
+}
+
+/*
+ *     Send PF_KEY data down.
+ */
+               
+DEBUG_NO_STATIC int
+#ifdef NET_26
+pfkey_sendmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t len)
+#else
+pfkey_sendmsg(struct socket *sock, struct msghdr *msg, int len, struct scm_cookie *scm)
+#endif
+{
+       struct sock *sk;
+       int error = 0;
+       struct sadb_msg *pfkey_msg = NULL, *pfkey_reply = NULL;
+       
+       if(sock == NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_sendmsg: "
+                           "Null socket passed in.\n");
+               SENDERR(EINVAL);
+       }
+       
+       sk = sock->sk;
+
+       if(sk == NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_sendmsg: "
+                           "Null sock passed in.\n");
+               SENDERR(EINVAL);
+       }
+       
+       if(msg == NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_sendmsg: "
+                           "Null msghdr passed in.\n");
+               SENDERR(EINVAL);
+       }
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_sendmsg: .\n");
+       if(sk->sk_err) {
+               error = sock_error(sk);
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_sendmsg: "
+                           "sk->err is non-zero, returns %d.\n",
+                           error);
+               SENDERR(-error);
+       }
+
+       if((current->uid != 0)) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_sendmsg: "
+                           "must be root to send messages to pfkey sockets.\n");
+               SENDERR(EACCES);
+       }
+
+       if(msg->msg_control)
+       {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_sendmsg: "
+                           "can't set flags or set msg_control.\n");
+               SENDERR(EINVAL);
+       }
+               
+       if(sk->sk_shutdown & SEND_SHUTDOWN) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_sendmsg: "
+                           "shutdown.\n");
+               send_sig(SIGPIPE, current, 0);
+               SENDERR(EPIPE);
+       }
+       
+       if(len < sizeof(struct sadb_msg)) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_sendmsg: "
+                           "bogus msg len of %d, too small.\n", (int)len);
+               SENDERR(EMSGSIZE);
+       }
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_sendmsg: "
+                   "allocating %d bytes for downward message.\n",
+                   (int)len);
+       if((pfkey_msg = (struct sadb_msg*)kmalloc(len, GFP_KERNEL)) == NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_sendmsg: "
+                           "memory allocation error.\n");
+               SENDERR(ENOBUFS);
+       }
+
+       memcpy_fromiovec((void *)pfkey_msg, msg->msg_iov, len);
+
+       if(pfkey_msg->sadb_msg_version != PF_KEY_V2) {
+               KLIPS_PRINT(1 || debug_pfkey,
+                           "klips_debug:pfkey_sendmsg: "
+                           "not PF_KEY_V2 msg, found %d, should be %d.\n",
+                           pfkey_msg->sadb_msg_version,
+                           PF_KEY_V2);
+               kfree((void*)pfkey_msg);
+               return -EINVAL;
+       }
+
+       if(len != pfkey_msg->sadb_msg_len * IPSEC_PFKEYv2_ALIGN) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_sendmsg: "
+                           "bogus msg len of %d, not %d byte aligned.\n",
+                           (int)len, (int)IPSEC_PFKEYv2_ALIGN);
+               SENDERR(EMSGSIZE);
+       }
+
+#if 0
+       /* This check is questionable, since a downward message could be
+          the result of an ACQUIRE either from kernel (PID==0) or
+          userspace (some other PID). */
+       /* check PID */
+       if(pfkey_msg->sadb_msg_pid != current->pid) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_sendmsg: "
+                           "pid (%d) does not equal sending process pid (%d).\n",
+                           pfkey_msg->sadb_msg_pid, current->pid);
+               SENDERR(EINVAL);
+       }
+#endif
+
+       if(pfkey_msg->sadb_msg_reserved) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_sendmsg: "
+                           "reserved field must be zero, set to %d.\n",
+                           pfkey_msg->sadb_msg_reserved);
+               SENDERR(EINVAL);
+       }
+       
+       if((pfkey_msg->sadb_msg_type > SADB_MAX) || (!pfkey_msg->sadb_msg_type)){
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_sendmsg: "
+                           "msg type too large or small:%d.\n",
+                           pfkey_msg->sadb_msg_type);
+               SENDERR(EINVAL);
+       }
+       
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_sendmsg: "
+                   "msg sent for parsing.\n");
+       
+       if((error = pfkey_msg_interp(sk, pfkey_msg, &pfkey_reply))) {
+               struct socket_list *pfkey_socketsp;
+
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_sendmsg: "
+                           "pfkey_msg_parse returns %d.\n",
+                           error);
+
+               if((pfkey_reply = (struct sadb_msg*)kmalloc(sizeof(struct sadb_msg), GFP_KERNEL)) == NULL) {
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_sendmsg: "
+                                   "memory allocation error.\n");
+                       SENDERR(ENOBUFS);
+               }
+               memcpy((void*)pfkey_reply, (void*)pfkey_msg, sizeof(struct sadb_msg));
+               pfkey_reply->sadb_msg_errno = -error;
+               pfkey_reply->sadb_msg_len = sizeof(struct sadb_msg) / IPSEC_PFKEYv2_ALIGN;
+
+               for(pfkey_socketsp = pfkey_open_sockets;
+                   pfkey_socketsp;
+                   pfkey_socketsp = pfkey_socketsp->next) {
+                       int error_upmsg = 0;
+                       KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_sendmsg: "
+                                   "sending up error=%d message=0p%p to socket=0p%p.\n",
+                                   error,
+                                   pfkey_reply,
+                                   pfkey_socketsp->socketp);
+                       if((error_upmsg = pfkey_upmsg(pfkey_socketsp->socketp, pfkey_reply))) {
+                               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_sendmsg: "
+                                           "sending up error message to socket=0p%p failed with error=%d.\n",
+                                           pfkey_socketsp->socketp,
+                                           error_upmsg);
+                               /* pfkey_msg_free(&pfkey_reply); */
+                               /* SENDERR(-error); */
+                       }
+                       KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_sendmsg: "
+                                   "sending up error message to socket=0p%p succeeded.\n",
+                                   pfkey_socketsp->socketp);
+               }
+               
+               pfkey_msg_free(&pfkey_reply);
+               
+               SENDERR(-error);
+       }
+
+ errlab:
+       if (pfkey_msg) {
+               kfree((void*)pfkey_msg);
+       }
+       
+       if(error) {
+               return error;
+       } else {
+               return len;
+       }
+}
+
+/*
+ *     Receive PF_KEY data up.
+ */
+               
+DEBUG_NO_STATIC int
+#ifdef NET_26
+pfkey_recvmsg(struct kiocb *kiocb
+             , struct socket *sock
+             , struct msghdr *msg
+             , size_t size
+             , int flags)
+#else
+pfkey_recvmsg(struct socket *sock
+             , struct msghdr *msg
+             , int size, int flags
+             , struct scm_cookie *scm)
+#endif
+{
+       struct sock *sk;
+       int noblock = flags & MSG_DONTWAIT;
+       struct sk_buff *skb;
+       int error;
+
+       if(sock == NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_recvmsg: "
+                           "Null socket passed in.\n");
+               return -EINVAL;
+       }
+
+       sk = sock->sk;
+
+       if(sk == NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_recvmsg: "
+                           "Null sock passed in for sock=0p%p.\n", sock);
+               return -EINVAL;
+       }
+
+       if(msg == NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_recvmsg: "
+                           "Null msghdr passed in for sock=0p%p, sk=0p%p.\n",
+                           sock, sk);
+               return -EINVAL;
+       }
+
+       KLIPS_PRINT(debug_pfkey && sysctl_ipsec_debug_verbose,
+                   "klips_debug:pfkey_recvmsg: sock=0p%p sk=0p%p msg=0p%p size=%d.\n",
+                   sock, sk, msg, (int)size);
+       if(flags & ~MSG_PEEK) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_sendmsg: "
+                           "flags (%d) other than MSG_PEEK not supported.\n",
+                           flags);
+               return -EOPNOTSUPP;
+       }
+               
+       msg->msg_namelen = 0; /* sizeof(*ska); */
+               
+       if(sk->sk_err) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_sendmsg: "
+                           "sk->sk_err=%d.\n", sk->sk_err);
+               return sock_error(sk);
+       }
+
+       if((skb = skb_recv_datagram(sk, flags, noblock, &error) ) == NULL) {
+                return error;
+       }
+
+       if(size > skb->len) {
+               size = skb->len;
+       }
+       else if(size <skb->len) {
+               msg->msg_flags |= MSG_TRUNC;
+       }
+
+       skb_copy_datagram_iovec(skb, 0, msg->msg_iov, size);
+#ifdef HAVE_KERNEL_TSTAMP
+       sk->sk_stamp = skb->tstamp;
+#elif defined(HAVE_TSTAMP)
+       sk->sk_stamp.tv_sec  = skb->tstamp.off_sec;
+       sk->sk_stamp.tv_usec = skb->tstamp.off_usec;
+#else
+        sk->sk_stamp=skb->stamp;
+#endif
+
+       skb_free_datagram(sk, skb);
+       return size;
+}
+
+#ifdef CONFIG_PROC_FS
+#ifndef PROC_FS_2325
+DEBUG_NO_STATIC
+#endif /* PROC_FS_2325 */
+int
+pfkey_get_info(char *buffer, char **start, off_t offset, int length
+#ifndef  PROC_NO_DUMMY
+, int dummy
+#endif /* !PROC_NO_DUMMY */
+)
+{
+       const int max_content = length > 0? length-1 : 0;       /* limit of useful snprintf output */
+#ifdef NET_26
+       struct hlist_node *node;
+#endif
+       off_t begin=0;
+       int len=0;
+       struct sock *sk;
+       
+#ifdef CONFIG_KLIPS_DEBUG
+       if(!sysctl_ipsec_debug_verbose) {
+#endif /* CONFIG_KLIPS_DEBUG */
+       len += ipsec_snprintf(buffer, length,
+                     "    sock   pid   socket     next     prev e n p sndbf    Flags     Type St\n");
+#ifdef CONFIG_KLIPS_DEBUG
+       } else {
+       len += ipsec_snprintf(buffer, length,
+                     "    sock   pid d    sleep   socket     next     prev e r z n p sndbf    stamp    Flags     Type St\n");
+       }
+#endif /* CONFIG_KLIPS_DEBUG */
+
+       sk_for_each(sk, node, &pfkey_sock_list) {
+
+#ifdef CONFIG_KLIPS_DEBUG
+               if(!sysctl_ipsec_debug_verbose) {
+#endif /* CONFIG_KLIPS_DEBUG */
+                 len += ipsec_snprintf(buffer+len, length-len,
+                                       "%8p %5d %8p %d %d %5d %08lX %8X %2X\n",
+                                       sk,
+                                       key_pid(sk),
+                                       sk->sk_socket,
+                                       sk->sk_err,
+                                       sk->sk_protocol,
+                                       sk->sk_sndbuf,
+                                       sk->sk_socket->flags,
+                                       sk->sk_socket->type,
+                                       sk->sk_socket->state);
+#ifdef CONFIG_KLIPS_DEBUG
+               } else {
+                 struct timeval t;
+                 grab_socket_timeval(t, *sk);
+                 len += ipsec_snprintf(buffer+len, length-len,
+                                       "%8p %5d %d %8p %8p %d %d %d %d %5d %d.%06d %08lX %8X %2X\n",
+                                       sk,
+                                       key_pid(sk),
+                                       sock_flag(sk, SOCK_DEAD),
+                                       sk->sk_sleep,
+                                       sk->sk_socket,
+                                       sk->sk_err,
+                                       sk->sk_reuse,
+#ifdef HAVE_SOCK_ZAPPED
+                                       sock_flag(sk, SOCK_ZAPPED),
+#else
+                                       sk->sk_zapped,
+#endif                                 
+                                       sk->sk_protocol,
+                                       sk->sk_sndbuf,
+                                       (unsigned int)t.tv_sec,
+                                       (unsigned int)t.tv_usec,
+                                       sk->sk_socket->flags,
+                                       sk->sk_socket->type,
+                                       sk->sk_socket->state);
+               }
+#endif /* CONFIG_KLIPS_DEBUG */
+               
+               if (len >= max_content) {
+                       /* we've done all that can fit -- stop loop */
+                       len = max_content;      /* truncate crap */
+                       break;
+               } else {
+                       const off_t pos = begin + len;  /* file position of end of what we've generated */
+
+                       if (pos <= offset) {
+                               /* all is before first interesting character:
+                                * discard, but note where we are.
+                                */
+                               len = 0;
+                               begin = pos;
+                       }
+               }
+       }
+
+       *start = buffer + (offset - begin);     /* Start of wanted data */
+       return len - (offset - begin);
+}
+
+#ifndef PROC_FS_2325
+DEBUG_NO_STATIC
+#endif /* PROC_FS_2325 */
+int
+pfkey_supported_get_info(char *buffer, char **start, off_t offset, int length
+#ifndef  PROC_NO_DUMMY
+, int dummy
+#endif /* !PROC_NO_DUMMY */
+)
+{
+       /* limit of useful snprintf output */
+       const int max_content = length > 0? length-1 : 0;       
+       off_t begin=0;
+       int len=0;
+       int satype;
+       struct supported_list *ps;
+       
+       len += ipsec_snprintf(buffer, length,
+                     "satype exttype alg_id ivlen minbits maxbits name\n");
+       
+       for(satype = SADB_SATYPE_UNSPEC; satype <= SADB_SATYPE_MAX; satype++) {
+               ps = pfkey_supported_list[satype];
+               while(ps) {
+                       struct ipsec_alg_supported *alg = ps->supportedp;
+                       unsigned char *n = alg->ias_name;
+                       if(n == NULL) n = "unknown";
+
+                       len += ipsec_snprintf(buffer+len, length-len,
+                                             "    %2d      %2d     %2d   %3d     %3d     %3d %20s\n",
+                                             satype,
+                                             alg->ias_exttype,
+                                             alg->ias_id,
+                                             alg->ias_ivlen,
+                                             alg->ias_keyminbits,
+                                             alg->ias_keymaxbits,
+                                             n);
+                       
+                       if (len >= max_content) {
+                               /* we've done all that can fit -- stop loop */
+                               len = max_content;      /* truncate crap */
+                               break;
+                       } else {
+                               const off_t pos = begin + len;  /* file position of end of what we've generated */
+
+                               if (pos <= offset) {
+                                       /* all is before first interesting character:
+                                        * discard, but note where we are.
+                                        */
+                                       len = 0;
+                                       begin = pos;
+                               }
+                       }
+
+                       ps = ps->next;
+               }
+       }
+       *start = buffer + (offset - begin);     /* Start of wanted data */
+       return len - (offset - begin);
+}
+
+#ifndef PROC_FS_2325
+DEBUG_NO_STATIC
+#endif /* PROC_FS_2325 */
+int
+pfkey_registered_get_info(char *buffer, char **start, off_t offset, int length
+#ifndef  PROC_NO_DUMMY
+, int dummy
+#endif /* !PROC_NO_DUMMY */
+)
+{
+       const int max_content = length > 0? length-1 : 0;       /* limit of useful snprintf output */
+       off_t begin=0;
+       int len=0;
+       int satype;
+       struct socket_list *pfkey_sockets;
+       
+       len += ipsec_snprintf(buffer, length,
+                     "satype   socket   pid       sk\n");
+       
+       for(satype = SADB_SATYPE_UNSPEC; satype <= SADB_SATYPE_MAX; satype++) {
+               pfkey_sockets = pfkey_registered_sockets[satype];
+               while(pfkey_sockets) {
+                       len += ipsec_snprintf(buffer+len, length-len,
+                                    "    %2d %8p %5d %8p\n",
+                                    satype,
+                                    pfkey_sockets->socketp,
+                                    key_pid(pfkey_sockets->socketp->sk),
+                                    pfkey_sockets->socketp->sk);
+                       
+                       if (len >= max_content) {
+                               /* we've done all that can fit -- stop loop (could stop two) */
+                               len = max_content;      /* truncate crap */
+                               break;
+                       } else {
+                               const off_t pos = begin + len;  /* file position of end of what we've generated */
+
+                               if (pos <= offset) {
+                                       /* all is before first interesting character:
+                                        * discard, but note where we are.
+                                        */
+                                       len = 0;
+                                       begin = pos;
+                               }
+                       }
+
+                       pfkey_sockets = pfkey_sockets->next;
+               }
+       }
+       *start = buffer + (offset - begin);     /* Start of wanted data */
+       return len - (offset - begin);
+}
+
+#ifndef PROC_FS_2325
+struct proc_dir_entry proc_net_pfkey =
+{
+       0,
+       6, "pf_key",
+       S_IFREG | S_IRUGO, 1, 0, 0,
+       0, &proc_net_inode_operations,
+       pfkey_get_info
+};
+struct proc_dir_entry proc_net_pfkey_supported =
+{
+       0,
+       16, "pf_key_supported",
+       S_IFREG | S_IRUGO, 1, 0, 0,
+       0, &proc_net_inode_operations,
+       pfkey_supported_get_info
+};
+struct proc_dir_entry proc_net_pfkey_registered =
+{
+       0,
+       17, "pf_key_registered",
+       S_IFREG | S_IRUGO, 1, 0, 0,
+       0, &proc_net_inode_operations,
+       pfkey_registered_get_info
+};
+#endif /* !PROC_FS_2325 */
+#endif /* CONFIG_PROC_FS */
+
+DEBUG_NO_STATIC int
+supported_add_all(int satype, struct ipsec_alg_supported supported[], int size)
+{
+       int i;
+       int error = 0;
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:init_pfkey: "
+                   "sizeof(supported_init_<satype=%d>)[%d]/sizeof(struct ipsec_alg_supported)[%d]=%d.\n",
+                   satype,
+                   size,
+                   (int)sizeof(struct ipsec_alg_supported),
+                   (int)(size/sizeof(struct ipsec_alg_supported)));
+
+       for(i = 0; i < size / sizeof(struct ipsec_alg_supported); i++) {
+
+               unsigned char *n = supported[i].ias_name;
+               if(n == NULL) n="unknown";
+
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:init_pfkey: "
+                           "i=%d inserting satype=%d exttype=%d id=%d ivlen=%d minbits=%d maxbits=%d name=%s.\n",
+                           i,
+                           satype,
+                           supported[i].ias_exttype,
+                           supported[i].ias_id,
+                           supported[i].ias_ivlen,
+                           supported[i].ias_keyminbits,
+                           supported[i].ias_keymaxbits,
+                           n);                     
+                           
+               error |= pfkey_list_insert_supported(&(supported[i]),
+                                           &(pfkey_supported_list[satype]));
+       }
+       return error;
+}
+
+DEBUG_NO_STATIC int
+supported_remove_all(int satype)
+{
+       int error = 0;
+       struct ipsec_alg_supported*supportedp;
+
+       while(pfkey_supported_list[satype]) {
+               unsigned char *n;
+               supportedp = pfkey_supported_list[satype]->supportedp;
+
+               n = supportedp->ias_name;
+               if(n == NULL) n="unknown";
+
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:init_pfkey: "
+                           "removing satype=%d exttype=%d id=%d ivlen=%d minbits=%d maxbits=%d name=%s.\n",
+                           satype,
+                           supportedp->ias_exttype,
+                           supportedp->ias_id,
+                           supportedp->ias_ivlen,
+                           supportedp->ias_keyminbits,
+                           supportedp->ias_keymaxbits, n);
+                           
+               error |= pfkey_list_remove_supported(supportedp,
+                                           &(pfkey_supported_list[satype]));
+       }
+       return error;
+}
+
+int
+pfkey_init(void)
+{
+       int error = 0;
+       int i;
+       
+       static struct ipsec_alg_supported supported_init_ah[] = {
+#ifdef CONFIG_KLIPS_AUTH_HMAC_MD5
+               {SADB_EXT_SUPPORTED_AUTH, SADB_AALG_MD5HMAC, 0, 128, 128},
+#endif /* CONFIG_KLIPS_AUTH_HMAC_MD5 */
+#ifdef CONFIG_KLIPS_AUTH_HMAC_SHA1
+               {SADB_EXT_SUPPORTED_AUTH, SADB_AALG_SHA1HMAC, 0, 160, 160}
+#endif /* CONFIG_KLIPS_AUTH_HMAC_SHA1 */
+       };
+       static struct ipsec_alg_supported supported_init_esp[] = {
+#ifdef CONFIG_KLIPS_AUTH_HMAC_MD5
+               {SADB_EXT_SUPPORTED_AUTH, SADB_AALG_MD5HMAC, 0, 128, 128},
+#endif /* CONFIG_KLIPS_AUTH_HMAC_MD5 */
+#ifdef CONFIG_KLIPS_AUTH_HMAC_SHA1
+               {SADB_EXT_SUPPORTED_AUTH, SADB_AALG_SHA1HMAC, 0, 160, 160},
+#endif /* CONFIG_KLIPS_AUTH_HMAC_SHA1 */
+#ifdef CONFIG_KLIPS_ENC_3DES
+               {SADB_EXT_SUPPORTED_ENCRYPT, SADB_EALG_3DESCBC, 64, 168, 168},
+#endif /* CONFIG_KLIPS_ENC_3DES */
+       };
+       static struct ipsec_alg_supported supported_init_ipip[] = {
+               {SADB_EXT_SUPPORTED_ENCRYPT, SADB_X_TALG_IPv4_in_IPv4, 0, 32, 32}
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+               , {SADB_EXT_SUPPORTED_ENCRYPT, SADB_X_TALG_IPv6_in_IPv4, 0, 128, 32}
+               , {SADB_EXT_SUPPORTED_ENCRYPT, SADB_X_TALG_IPv4_in_IPv6, 0, 32, 128}
+               , {SADB_EXT_SUPPORTED_ENCRYPT, SADB_X_TALG_IPv6_in_IPv6, 0, 128, 128}
+#endif /* defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) */
+       };
+#ifdef CONFIG_KLIPS_IPCOMP
+       static struct ipsec_alg_supported supported_init_ipcomp[] = {
+               {SADB_EXT_SUPPORTED_ENCRYPT, SADB_X_CALG_DEFLATE, 0, 1, 1}
+       };
+#endif /* CONFIG_KLIPS_IPCOMP */
+
+#if 0
+        printk(KERN_INFO
+              "klips_info:pfkey_init: "
+              "FreeS/WAN: initialising PF_KEYv2 domain sockets.\n");
+#endif
+
+       for(i = SADB_SATYPE_UNSPEC; i <= SADB_SATYPE_MAX; i++) {
+               pfkey_registered_sockets[i] = NULL;
+               pfkey_supported_list[i] = NULL;
+       }
+
+       error |= supported_add_all(SADB_SATYPE_AH, supported_init_ah, sizeof(supported_init_ah));
+       error |= supported_add_all(SADB_SATYPE_ESP, supported_init_esp, sizeof(supported_init_esp));
+#ifdef CONFIG_KLIPS_IPCOMP
+       error |= supported_add_all(SADB_X_SATYPE_COMP, supported_init_ipcomp, sizeof(supported_init_ipcomp));
+#endif /* CONFIG_KLIPS_IPCOMP */
+       error |= supported_add_all(SADB_X_SATYPE_IPIP, supported_init_ipip, sizeof(supported_init_ipip));
+
+        error |= sock_register(&pfkey_family_ops);
+
+#ifdef CONFIG_PROC_FS
+#  ifndef PROC_FS_2325
+#    ifdef PROC_FS_21
+       error |= proc_register(proc_net, &proc_net_pfkey);
+       error |= proc_register(proc_net, &proc_net_pfkey_supported);
+       error |= proc_register(proc_net, &proc_net_pfkey_registered);
+#    else /* PROC_FS_21 */
+       error |= proc_register_dynamic(&proc_net, &proc_net_pfkey);
+       error |= proc_register_dynamic(&proc_net, &proc_net_pfkey_supported);
+       error |= proc_register_dynamic(&proc_net, &proc_net_pfkey_registered);
+#    endif /* PROC_FS_21 */
+#  else /* !PROC_FS_2325 */
+       proc_net_create ("pf_key", 0, pfkey_get_info);
+       proc_net_create ("pf_key_supported", 0, pfkey_supported_get_info);
+       proc_net_create ("pf_key_registered", 0, pfkey_registered_get_info);
+#  endif /* !PROC_FS_2325 */
+#endif /* CONFIG_PROC_FS */
+
+       return error;
+}
+
+int
+pfkey_cleanup(void)
+{
+       int error = 0;
+       
+        printk(KERN_INFO "klips_info:pfkey_cleanup: "
+              "shutting down PF_KEY domain sockets.\n");
+#ifdef VOID_SOCK_UNREGISTER
+               sock_unregister(PF_KEY);
+#else
+        sock_unregister(PF_KEY);
+#endif
+
+       error |= supported_remove_all(SADB_SATYPE_AH);
+       error |= supported_remove_all(SADB_SATYPE_ESP);
+#ifdef CONFIG_KLIPS_IPCOMP
+       error |= supported_remove_all(SADB_X_SATYPE_COMP);
+#endif /* CONFIG_KLIPS_IPCOMP */
+       error |= supported_remove_all(SADB_X_SATYPE_IPIP);
+
+#ifdef CONFIG_PROC_FS
+#  ifndef PROC_FS_2325
+       if (proc_net_unregister(proc_net_pfkey.low_ino) != 0)
+               printk("klips_debug:pfkey_cleanup: "
+                      "cannot unregister /proc/net/pf_key\n");
+       if (proc_net_unregister(proc_net_pfkey_supported.low_ino) != 0)
+               printk("klips_debug:pfkey_cleanup: "
+                      "cannot unregister /proc/net/pf_key_supported\n");
+       if (proc_net_unregister(proc_net_pfkey_registered.low_ino) != 0)
+               printk("klips_debug:pfkey_cleanup: "
+                      "cannot unregister /proc/net/pf_key_registered\n");
+#  else /* !PROC_FS_2325 */
+       proc_net_remove ("pf_key");
+       proc_net_remove ("pf_key_supported");
+       proc_net_remove ("pf_key_registered");
+#  endif /* !PROC_FS_2325 */
+#endif /* CONFIG_PROC_FS */
+
+       /* other module unloading cleanup happens here */
+       return error;
+}
+
+#ifdef MODULE
+#if 0
+int
+init_module(void)
+{
+       pfkey_init();
+       return 0;
+}
+
+void
+cleanup_module(void)
+{
+       pfkey_cleanup();
+}
+#endif /* 0 */
+#else /* MODULE */
+struct net_protocol;
+void pfkey_proto_init(struct net_protocol *pro)
+{
+       pfkey_init();
+}
+#endif /* MODULE */
+
+/*
+ * $Log: pfkey_v2.c,v $
+ * Revision 1.97.2.16  2007-10-31 19:57:41  paul
+ * type of sock.sk_stamp changed from timeval to ktime [dhr]
+ *
+ * Revision 1.97.2.15  2007-10-30 21:39:30  paul
+ * Use skb_tail_pointer/skb_end_pointer [dhr]
+ *
+ * Revision 1.97.2.14  2007/09/05 02:56:10  paul
+ * Use the new ipsec_kversion macros by David to deal with 2.6.22 kernels.
+ * Fixes based on David McCullough patch.
+ *
+ * Revision 1.97.2.13  2007/08/10 01:40:49  paul
+ * Fix for sock_unregister for 2.6.19 by Sergeil
+ *
+ * Revision 1.97.2.12  2006/11/24 05:43:29  paul
+ * kernels after 2.6.18 do not return a code from unregister_socket()
+ * backport from git 41e54a2684dc809d7952e816860ea646a3194a72
+ *
+ * Revision 1.97.2.11  2006/11/15 16:05:57  paul
+ * fix for compiling on 2.4. kernels by Matthias Haas.
+ *
+ * Revision 1.97.2.10  2006/10/10 20:43:28  paul
+ * Add family/create/owner for pfkey_family_ops. This fixes bug #671
+ *
+ * Revision 1.97.2.9  2006/10/06 21:39:26  paul
+ * Fix for 2.6.18+ only include linux/config.h if AUTOCONF_INCLUDED is not
+ * set. This is defined through autoconf.h which is included through the
+ * linux kernel build macros.
+ *
+ * Revision 1.97.2.8  2006/07/10 15:56:11  paul
+ * Fix for bug #642 by Bart.
+ *
+ * Revision 1.97.2.7  2006/04/04 11:34:19  ken
+ * Backport SMP fixes + #ifdef cleanup from #public
+ *
+ * Revision 1.97.2.6  2006/02/15 05:00:20  paul
+ * Fix for crasher on 2.6.12+ with klips (mostly seen on redhat kernels)
+ *
+ * Revision 1.97.2.5  2005/11/22 04:11:52  ken
+ * Backport fixes for 2.6.14 kernels from HEAD
+ *
+ * Revision 1.97.2.4  2005/09/14 16:40:45  mcr
+ *    pull up of compilation on 2.4
+ *
+ * Revision 1.97.2.3  2005/09/06 02:10:03  mcr
+ *    pulled up possible SMP-related compilation fix
+ *
+ * Revision 1.97.2.2  2005/08/28 01:21:12  paul
+ * Undid Ken's gcc4 fix in version 1.94 since it breaks linking KLIPS on
+ * SMP kernels.
+ *
+ * Revision 1.97.2.1  2005/08/27 23:40:00  paul
+ * recommited HAVE_SOCK_SECURITY fixes for linux 2.6.13
+ *
+ * Revision 1.102  2005/09/14 16:37:23  mcr
+ *     fix to compile on 2.4.
+ *
+ * Revision 1.101  2005/09/06 01:42:25  mcr
+ *    removed additional SOCKOPS_WRAPPED code
+ *
+ * Revision 1.100  2005/08/30 18:10:15  mcr
+ *     remove SOCKOPS_WRAPPED() code, add proper locking to the
+ *     pfkey code. (cross fingers)
+ *
+ * Revision 1.99  2005/08/28 01:53:37  paul
+ * Undid Ken's gcc4 fix in version 1.94 since it breaks linking KLIPS on SMP kernels.
+ *
+ * Revision 1.98  2005/08/27 23:07:21  paul
+ * Somewhere between 2.6.12 and 2.6.13rc7 the unused security memnber in sk_buff
+ * has been removed. This patch should fix compilation for both cases.
+ *
+ * Revision 1.97  2005/07/20 00:33:36  mcr
+ *     fixed typo in #ifdef for SKALLOC.
+ *
+ * Revision 1.96  2005/07/19 20:02:15  mcr
+ *     sk_alloc() interface change.
+ *
+ * Revision 1.95  2005/07/09 00:40:06  ken
+ * Fix for GCC4 - it doesn't like the potential for duplicate declaration
+ *
+ * Revision 1.94  2005/07/09 00:14:04  ken
+ * Casts for 64bit cleanliness
+ *
+ * Revision 1.93  2005/07/08 16:20:05  mcr
+ *     fix for 2.6.12 disapperance of sk_zapped field -> sock_flags.
+ *
+ * Revision 1.92  2005/05/21 03:29:39  mcr
+ *     fixed missing prototype definition.
+ *
+ * Revision 1.91  2005/05/11 01:43:45  mcr
+ *     removed "poor-man"s OOP in favour of proper C structures.
+ *
+ * Revision 1.90  2005/05/02 18:42:47  mcr
+ *     fix for cut&paste error with pfkey_v2.c "supported_name"
+ *
+ * Revision 1.89  2005/05/01 03:12:31  mcr
+ *     print name if it is available.
+ *
+ * Revision 1.88  2005/04/29 05:10:22  mcr
+ *     removed from extraenous includes to make unit testing easier.
+ *
+ * Revision 1.87  2005/04/15 19:57:10  mcr
+ *     make sure that address has 0p so that it will
+ *     sanitized.
+ *
+ * Revision 1.86  2005/04/08 18:28:36  mcr
+ *     some minor #ifdef simplification in pursuit of a possible bug.
+ *
+ * Revision 1.85  2004/12/03 21:25:57  mcr
+ *     compile time fixes for running on 2.6.
+ *     still experimental.
+ *
+ * Revision 1.84  2004/08/17 03:27:23  mcr
+ *     klips 2.6 edits.
+ *
+ * Revision 1.83  2004/08/04 15:57:07  mcr
+ *     moved des .h files to include/des/ *
+ *     included 2.6 protocol specific things
+ *     started at NAT-T support, but it will require a kernel patch.
+ *
+ * Revision 1.82  2004/07/10 19:11:18  mcr
+ *     CONFIG_IPSEC -> CONFIG_KLIPS.
+ *
+ * Revision 1.81  2004/04/25 21:23:11  ken
+ * Pull in dhr's changes from FreeS/WAN 2.06
+ *
+ * Revision 1.80  2004/04/06 02:49:26  mcr
+ *     pullup of algo code from alg-branch.
+ *
+ * Revision 1.79.4.1  2003/12/22 15:25:52  jjo
+ * . Merged algo-0.8.1-rc11-test1 into alg-branch
+ *
+ * Revision 1.79  2003/10/31 02:27:55  mcr
+ *     pulled up port-selector patches and sa_id elimination.
+ *
+ * Revision 1.78.4.1  2003/10/29 01:30:41  mcr
+ *     elimited "struct sa_id".
+ *
+ * Revision 1.78  2003/04/03 17:38:09  rgb
+ * Centralised ipsec_kfree_skb and ipsec_dev_{get,put}.
+ *
+ * Revision 1.77  2002/10/17 16:49:36  mcr
+ *     sock->ops should reference the unwrapped options so that
+ *     we get hacked in locking on SMP systems.
+ *
+ * Revision 1.76  2002/10/12 23:11:53  dhr
+ *
+ * [KenB + DHR] more 64-bit cleanup
+ *
+ * Revision 1.75  2002/09/20 05:01:57  rgb
+ * Added memory allocation debugging.
+ *
+ * Revision 1.74  2002/09/19 02:42:50  mcr
+ *     do not define the pfkey_ops function for now.
+ *
+ * Revision 1.73  2002/09/17 17:29:23  mcr
+ *     #if 0 out some dead code - pfkey_ops is never used as written.
+ *
+ * Revision 1.72  2002/07/24 18:44:54  rgb
+ * Type fiddling to tame ia64 compiler.
+ *
+ * Revision 1.71  2002/05/23 07:14:11  rgb
+ * Cleaned up %p variants to 0p%p for test suite cleanup.
+ *
+ * Revision 1.70  2002/04/24 07:55:32  mcr
+ *     #include patches and Makefiles for post-reorg compilation.
+ *
+ * Revision 1.69  2002/04/24 07:36:33  mcr
+ * Moved from ./klips/net/ipsec/pfkey_v2.c,v
+ *
+ * Revision 1.68  2002/03/08 01:15:17  mcr
+ *     put some internal structure only debug messages behind
+ *     && sysctl_ipsec_debug_verbose.
+ *
+ * Revision 1.67  2002/01/29 17:17:57  mcr
+ *     moved include of ipsec_param.h to after include of linux/kernel.h
+ *     otherwise, it seems that some option that is set in ipsec_param.h
+ *     screws up something subtle in the include path to kernel.h, and
+ *     it complains on the snprintf() prototype.
+ *
+ * Revision 1.66  2002/01/29 04:00:54  mcr
+ *     more excise of kversions.h header.
+ *
+ * Revision 1.65  2002/01/29 02:13:18  mcr
+ *     introduction of ipsec_kversion.h means that include of
+ *     ipsec_param.h must preceed any decisions about what files to
+ *     include to deal with differences in kernel source.
+ *
+ * Revision 1.64  2001/11/26 09:23:51  rgb
+ * Merge MCR's ipsec_sa, eroute, proc and struct lifetime changes.
+ *
+ * Revision 1.61.2.1  2001/09/25 02:28:44  mcr
+ *     cleaned up includes.
+ *
+ * Revision 1.63  2001/11/12 19:38:00  rgb
+ * Continue trying other sockets even if one fails and return only original
+ * error.
+ *
+ * Revision 1.62  2001/10/18 04:45:22  rgb
+ * 2.4.9 kernel deprecates linux/malloc.h in favour of linux/slab.h,
+ * lib/freeswan.h version macros moved to lib/kversions.h.
+ * Other compiler directive cleanups.
+ *
+ * Revision 1.61  2001/09/20 15:32:59  rgb
+ * Min/max cleanup.
+ *
+ * Revision 1.60  2001/06/14 19:35:12  rgb
+ * Update copyright date.
+ *
+ * Revision 1.59  2001/06/13 15:35:48  rgb
+ * Fixed #endif comments.
+ *
+ * Revision 1.58  2001/05/04 16:37:24  rgb
+ * Remove erroneous checking of return codes for proc_net_* in 2.4.
+ *
+ * Revision 1.57  2001/05/03 19:43:36  rgb
+ * Initialise error return variable.
+ * Check error return codes in startup and shutdown.
+ * Standardise on SENDERR() macro.
+ *
+ * Revision 1.56  2001/04/21 23:05:07  rgb
+ * Define out skb->used for 2.4 kernels.
+ *
+ * Revision 1.55  2001/02/28 05:03:28  rgb
+ * Clean up and rationalise startup messages.
+ *
+ * Revision 1.54  2001/02/27 22:24:55  rgb
+ * Re-formatting debug output (line-splitting, joining, 1arg/line).
+ * Check for satoa() return codes.
+ *
+ * Revision 1.53  2001/02/27 06:48:18  rgb
+ * Fixed pfkey socket unregister log message to reflect type and function.
+ *
+ * Revision 1.52  2001/02/26 22:34:38  rgb
+ * Fix error return code that was getting overwritten by the error return
+ * code of an upmsg.
+ *
+ * Revision 1.51  2001/01/30 23:42:47  rgb
+ * Allow pfkey msgs from pid other than user context required for ACQUIRE
+ * and subsequent ADD or UDATE.
+ *
+ * Revision 1.50  2001/01/23 20:22:59  rgb
+ * 2.4 fix to remove removed is_clone member.
+ *
+ * Revision 1.49  2000/11/06 04:33:47  rgb
+ * Changed non-exported functions to DEBUG_NO_STATIC.
+ *
+ * Revision 1.48  2000/09/29 19:47:41  rgb
+ * Update copyright.
+ *
+ * Revision 1.47  2000/09/22 04:23:04  rgb
+ * Added more debugging to pfkey_upmsg() call from pfkey_sendmsg() error.
+ *
+ * Revision 1.46  2000/09/21 04:20:44  rgb
+ * Fixed array size off-by-one error.  (Thanks Svenning!)
+ *
+ * Revision 1.45  2000/09/20 04:01:26  rgb
+ * Changed static functions to DEBUG_NO_STATIC for revealing function names
+ * in oopsen.
+ *
+ * Revision 1.44  2000/09/19 00:33:17  rgb
+ * 2.0 fixes.
+ *
+ * Revision 1.43  2000/09/16 01:28:13  rgb
+ * Fixed use of 0 in p format warning.
+ *
+ * Revision 1.42  2000/09/16 01:09:41  rgb
+ * Fixed debug format warning for pointers that was expecting ints.
+ *
+ * Revision 1.41  2000/09/13 15:54:00  rgb
+ * Rewrote pfkey_get_info(), added pfkey_{supported,registered}_get_info().
+ * Moved supported algos add and remove to functions.
+ *
+ * Revision 1.40  2000/09/12 18:49:28  rgb
+ * Added IPIP tunnel and IPCOMP register support.
+ *
+ * Revision 1.39  2000/09/12 03:23:49  rgb
+ * Converted #if0 debugs to sysctl.
+ * Removed debug_pfkey initialisations that prevented no_debug loading or
+ * linking.
+ *
+ * Revision 1.38  2000/09/09 06:38:02  rgb
+ * Return positive errno in pfkey_reply error message.
+ *
+ * Revision 1.37  2000/09/08 19:19:09  rgb
+ * Change references from DEBUG_IPSEC to CONFIG_IPSEC_DEBUG.
+ * Clean-up of long-unused crud...
+ * Create pfkey error message on on failure.
+ * Give pfkey_list_{insert,remove}_{socket,supported}() some error
+ * checking.
+ *
+ * Revision 1.36  2000/09/01 18:49:38  rgb
+ * Reap experimental NET_21_ bits.
+ * Turned registered sockets list into an array of one list per satype.
+ * Remove references to deprecated sklist_{insert,remove}_socket.
+ * Removed leaking socket debugging code.
+ * Removed duplicate pfkey_insert_socket in pfkey_create.
+ * Removed all references to pfkey msg->msg_name, since it is not used for
+ * pfkey.
+ * Added a supported algorithms array lists, one per satype and registered
+ * existing algorithms.
+ * Fixed pfkey_list_{insert,remove}_{socket,support}() to allow change to
+ * list.
+ * Only send pfkey_expire() messages to sockets registered for that satype.
+ *
+ * Revision 1.35  2000/08/24 17:03:00  rgb
+ * Corrected message size error return code for PF_KEYv2.
+ * Removed downward error prohibition.
+ *
+ * Revision 1.34  2000/08/21 16:32:26  rgb
+ * Re-formatted for cosmetic consistency and readability.
+ *
+ * Revision 1.33  2000/08/20 21:38:24  rgb
+ * Added a pfkey_reply parameter to pfkey_msg_interp(). (Momchil)
+ * Extended the upward message initiation of pfkey_sendmsg(). (Momchil)
+ *
+ * Revision 1.32  2000/07/28 14:58:31  rgb
+ * Changed kfree_s to kfree, eliminating extra arg to fix 2.4.0-test5.
+ *
+ * Revision 1.31  2000/05/16 03:04:00  rgb
+ * Updates for 2.3.99pre8 from MB.
+ *
+ * Revision 1.30  2000/05/10 19:22:21  rgb
+ * Use sklist private functions for 2.3.xx compatibility.
+ *
+ * Revision 1.29  2000/03/22 16:17:03  rgb
+ * Fixed SOCKOPS_WRAPPED macro for SMP (MB).
+ *
+ * Revision 1.28  2000/02/21 19:30:45  rgb
+ * Removed references to pkt_bridged for 2.3.47 compatibility.
+ *
+ * Revision 1.27  2000/02/14 21:07:00  rgb
+ * Fixed /proc/net/pf-key legend spacing.
+ *
+ * Revision 1.26  2000/01/22 03:46:59  rgb
+ * Fixed pfkey error return mechanism so that we are able to free the
+ * local copy of the pfkey_msg, plugging a memory leak and silencing
+ * the bad object free complaints.
+ *
+ * Revision 1.25  2000/01/21 06:19:44  rgb
+ * Moved pfkey_list_remove_socket() calls to before MOD_USE_DEC_COUNT.
+ * Added debugging to pfkey_upmsg.
+ *
+ * Revision 1.24  2000/01/10 16:38:23  rgb
+ * MB fixups for 2.3.x.
+ *
+ * Revision 1.23  1999/12/09 23:22:16  rgb
+ * Added more instrumentation for debugging 2.0 socket
+ * selection/reading.
+ * Removed erroneous 2.0 wait==NULL check bug in select.
+ *
+ * Revision 1.22  1999/12/08 20:32:16  rgb
+ * Tidied up 2.0.xx support, after major pfkey work, eliminating
+ * msg->msg_name twiddling in the process, since it is not defined
+ * for PF_KEYv2.
+ *
+ * Revision 1.21  1999/12/01 22:17:19  rgb
+ * Set skb->dev to zero on new skb in case it is a reused skb.
+ * Added check for skb_put overflow and freeing to avoid upmsg on error.
+ * Added check for wrong pfkey version and freeing to avoid upmsg on
+ * error.
+ * Shut off content dumping in pfkey_destroy.
+ * Added debugging message for size of buffer allocated for upmsg.
+ *
+ * Revision 1.20  1999/11/27 12:11:00  rgb
+ * Minor clean-up, enabling quiet operation of pfkey if desired.
+ *
+ * Revision 1.19  1999/11/25 19:04:21  rgb
+ * Update proc_fs code for pfkey to use dynamic registration.
+ *
+ * Revision 1.18  1999/11/25 09:07:17  rgb
+ * Implemented SENDERR macro for propagating error codes.
+ * Fixed error return code bug.
+ *
+ * Revision 1.17  1999/11/23 23:07:20  rgb
+ * Change name of pfkey_msg_parser to pfkey_msg_interp since it no longer
+ * parses. (PJO)
+ * Sort out pfkey and freeswan headers, putting them in a library path.
+ *
+ * Revision 1.16  1999/11/20 22:00:22  rgb
+ * Moved socketlist type declarations and prototypes for shared use.
+ * Renamed reformatted and generically extended for use by other socket
+ * lists pfkey_{del,add}_open_socket to pfkey_list_{remove,insert}_socket.
+ *
+ * Revision 1.15  1999/11/18 04:15:09  rgb
+ * Make pfkey_data_ready temporarily available for 2.2.x testing.
+ * Clean up pfkey_destroy_socket() debugging statements.
+ * Add Peter Onion's code to send messages up to all listening sockets.
+ * Changed all occurrences of #include "../../../lib/freeswan.h"
+ * to #include <freeswan.h> which works due to -Ilibfreeswan in the
+ * klips/net/ipsec/Makefile.
+ * Replaced all kernel version macros to shorter, readable form.
+ * Added CONFIG_PROC_FS compiler directives in case it is shut off.
+ *
+ * Revision 1.14  1999/11/17 16:01:00  rgb
+ * Make pfkey_data_ready temporarily available for 2.2.x testing.
+ * Clean up pfkey_destroy_socket() debugging statements.
+ * Add Peter Onion's code to send messages up to all listening sockets.
+ * Changed #include "../../../lib/freeswan.h" to #include <freeswan.h>
+ * which works due to -Ilibfreeswan in the klips/net/ipsec/Makefile.
+ *
+ * Revision 1.13  1999/10/27 19:59:51  rgb
+ * Removed af_unix comments that are no longer relevant.
+ * Added debug prink statements.
+ * Added to the /proc output in pfkey_get_info.
+ * Made most functions non-static to enable oops tracing.
+ * Re-enable skb dequeueing and freeing.
+ * Fix skb_alloc() and skb_put() size bug in pfkey_upmsg().
+ *
+ * Revision 1.12  1999/10/26 17:05:42  rgb
+ * Complete re-ordering based on proto_ops structure order.
+ * Separated out proto_ops structures for 2.0.x and 2.2.x for clarity.
+ * Simplification to use built-in socket ops where possible for 2.2.x.
+ * Add shorter macros for compiler directives to visually clean-up.
+ * Add lots of sk skb dequeueing debugging statements.
+ * Added to the /proc output in pfkey_get_info.
+ *
+ * Revision 1.11  1999/09/30 02:55:10  rgb
+ * Bogus skb detection.
+ * Fix incorrect /proc/net/ipsec-eroute printk message.
+ *
+ * Revision 1.10  1999/09/21 15:22:13  rgb
+ * Temporary fix while I figure out the right way to destroy sockets.
+ *
+ * Revision 1.9  1999/07/08 19:19:44  rgb
+ * Fix pointer format warning.
+ * Fix missing member error under 2.0.xx kernels.
+ *
+ * Revision 1.8  1999/06/13 07:24:04  rgb
+ * Add more debugging.
+ *
+ * Revision 1.7  1999/06/10 05:24:17  rgb
+ * Clarified compiler directives.
+ * Renamed variables to reduce confusion.
+ * Used sklist_*_socket() kernel functions to simplify 2.2.x socket support.
+ * Added lots of sanity checking.
+ *
+ * Revision 1.6  1999/06/03 18:59:50  rgb
+ * More updates to 2.2.x socket support.  Almost works, oops at end of call.
+ *
+ * Revision 1.5  1999/05/25 22:44:05  rgb
+ * Start fixing 2.2 sockets.
+ *
+ * Revision 1.4  1999/04/29 15:21:34  rgb
+ * Move log to the end of the file.
+ * Eliminate min/max redefinition in #include <net/tcp.h>.
+ * Correct path for pfkey #includes
+ * Standardise an error return method.
+ * Add debugging instrumentation.
+ * Move message type checking to pfkey_msg_parse().
+ * Add check for errno incorrectly set.
+ * Add check for valid PID.
+ * Add check for reserved illegally set.
+ * Add check for message out of bounds.
+ *
+ * Revision 1.3  1999/04/15 17:58:07  rgb
+ * Add RCSID labels.
+ *
+ * Revision 1.2  1999/04/15 15:37:26  rgb
+ * Forward check changes from POST1_00 branch.
+ *
+ * Revision 1.1.2.2  1999/04/13 20:37:12  rgb
+ * Header Title correction.
+ *
+ * Revision 1.1.2.1  1999/03/26 20:58:55  rgb
+ * Add pfkeyv2 support to KLIPS.
+ *
+ *
+ * RFC 2367
+ * PF_KEY_v2 Key Management API
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/pfkey_v2_build.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,1581 @@
+/*
+ * RFC2367 PF_KEYv2 Key management API message parser
+ * Copyright (C) 1999, 2000, 2001  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id: pfkey_v2_build.c,v 1.51.8.1 2006-05-01 14:36:39 mcr Exp $
+ */
+
+/*
+ *             Template from klips/net/ipsec/ipsec/ipsec_parser.c.
+ */
+
+char pfkey_v2_build_c_version[] = "$Id: pfkey_v2_build.c,v 1.51.8.1 2006-05-01 14:36:39 mcr Exp $";
+
+/*
+ * Some ugly stuff to allow consistent debugging code for use in the
+ * kernel and in user space
+*/
+
+#ifdef __KERNEL__
+
+# include <linux/kernel.h>  /* for printk */
+
+# include "openswan/ipsec_kversion.h" /* for malloc switch */
+# ifdef MALLOC_SLAB
+#  include <linux/slab.h> /* kmalloc() */
+# else /* MALLOC_SLAB */
+#  include <linux/malloc.h> /* kmalloc() */
+# endif /* MALLOC_SLAB */
+# include <linux/errno.h>  /* error codes */
+# include <linux/types.h>  /* size_t */
+# include <linux/interrupt.h> /* mark_bh */
+
+# include <linux/netdevice.h>   /* struct device, and other headers */
+# include <linux/etherdevice.h> /* eth_type_trans */
+# include <linux/ip.h>          /* struct iphdr */ 
+# if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+#  include <linux/ipv6.h>        /* struct ipv6hdr */
+# endif /* if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) */
+
+# define MALLOC(size) kmalloc(size, GFP_ATOMIC)
+# define FREE(obj) kfree(obj)
+# include <openswan.h>
+#else /* __KERNEL__ */
+
+# include <sys/types.h>
+# include <linux/types.h>
+# include <linux/errno.h>
+# include <malloc.h>
+# include <string.h> /* memset */
+
+# include <openswan.h>
+
+#endif /* __KERNEL__ */
+
+#include <pfkeyv2.h>
+#include <pfkey.h>
+
+#ifdef __KERNEL__
+#include "openswan/radij.h"  /* rd_nodes */
+#include "openswan/ipsec_encap.h"  /* sockaddr_encap */
+#endif /* __KERNEL__ */
+
+
+#include "openswan/ipsec_sa.h"  /* IPSEC_SAREF_NULL, IPSEC_SA_REF_TABLE_IDX_WIDTH */
+#include "openswan/pfkey_debug.h"
+
+
+#define SENDERR(_x) do { error = -(_x); goto errlab; } while (0)
+
+void
+pfkey_extensions_init(struct sadb_ext *extensions[SADB_EXT_MAX + 1])
+{
+       int i;
+       
+       for (i = 0; i != SADB_EXT_MAX + 1; i++) {
+               extensions[i] = NULL;
+       }
+}
+
+void
+pfkey_extensions_free(struct sadb_ext *extensions[SADB_EXT_MAX + 1])
+{
+       int i;
+       
+       if(!extensions) {
+               return;
+       }
+
+       if(extensions[0]) {
+               memset(extensions[0], 0, sizeof(struct sadb_msg));
+               FREE(extensions[0]);
+               extensions[0] = NULL;
+       }
+       
+       for (i = 1; i != SADB_EXT_MAX + 1; i++) {
+               if(extensions[i]) {
+                       memset(extensions[i], 0, extensions[i]->sadb_ext_len * IPSEC_PFKEYv2_ALIGN);
+                       FREE(extensions[i]);
+                       extensions[i] = NULL;
+               }
+       }
+}
+
+void
+pfkey_msg_free(struct sadb_msg **pfkey_msg)
+{
+       if(*pfkey_msg) {
+               memset(*pfkey_msg, 0, (*pfkey_msg)->sadb_msg_len * IPSEC_PFKEYv2_ALIGN);
+               FREE(*pfkey_msg);
+               *pfkey_msg = NULL;
+       }
+}
+
+/* Default extension builders taken from the KLIPS code */
+
+int
+pfkey_msg_hdr_build(struct sadb_ext**  pfkey_ext,
+                   uint8_t             msg_type,
+                   uint8_t             satype,
+                   uint8_t             msg_errno,
+                   uint32_t            seq,
+                   uint32_t            pid)
+{
+       int error = 0;
+       struct sadb_msg *pfkey_msg = (struct sadb_msg *)*pfkey_ext;
+
+       DEBUGGING(PF_KEY_DEBUG_BUILD,
+               "pfkey_msg_hdr_build:\n");
+       DEBUGGING(PF_KEY_DEBUG_BUILD,
+               "pfkey_msg_hdr_build: "
+               "on_entry &pfkey_ext=0p%p pfkey_ext=0p%p *pfkey_ext=0p%p.\n",
+               &pfkey_ext,
+               pfkey_ext,
+               *pfkey_ext);
+       /* sanity checks... */
+       if(pfkey_msg) {
+               DEBUGGING(PF_KEY_DEBUG_BUILD,
+                       "pfkey_msg_hdr_build: "
+                       "why is pfkey_msg already pointing to something?\n");
+               SENDERR(EINVAL);
+       }
+
+       if(!msg_type) {
+               DEBUGGING(PF_KEY_DEBUG_BUILD,
+                       "pfkey_msg_hdr_build: "
+                       "msg type not set, must be non-zero..\n");
+               SENDERR(EINVAL);
+       }
+
+       if(msg_type > SADB_MAX) {
+               DEBUGGING(PF_KEY_DEBUG_BUILD,
+                       "pfkey_msg_hdr_build: "
+                       "msg type too large:%d.\n",
+                       msg_type);
+               SENDERR(EINVAL);
+       }
+
+       if(satype > SADB_SATYPE_MAX) {
+               DEBUGGING(PF_KEY_DEBUG_BUILD,
+                       "pfkey_msg_hdr_build: "
+                       "satype %d > max %d\n", 
+                       satype, SADB_SATYPE_MAX);
+               SENDERR(EINVAL);
+       }
+
+       pfkey_msg = (struct sadb_msg*)MALLOC(sizeof(struct sadb_msg));
+       *pfkey_ext = (struct sadb_ext*)pfkey_msg;
+       
+       if(pfkey_msg == NULL) {
+               DEBUGGING(PF_KEY_DEBUG_BUILD,
+                       "pfkey_msg_hdr_build: "
+                       "memory allocation failed\n");
+               SENDERR(ENOMEM);
+       }
+       memset(pfkey_msg, 0, sizeof(struct sadb_msg));
+
+       pfkey_msg->sadb_msg_len = sizeof(struct sadb_msg) / IPSEC_PFKEYv2_ALIGN;
+
+       pfkey_msg->sadb_msg_type = msg_type;
+       pfkey_msg->sadb_msg_satype = satype;
+
+       pfkey_msg->sadb_msg_version = PF_KEY_V2;
+       pfkey_msg->sadb_msg_errno = msg_errno;
+       pfkey_msg->sadb_msg_reserved = 0;
+       pfkey_msg->sadb_msg_seq = seq;
+       pfkey_msg->sadb_msg_pid = pid;
+       DEBUGGING(PF_KEY_DEBUG_BUILD,
+               "pfkey_msg_hdr_build: "
+               "on_exit &pfkey_ext=0p%p pfkey_ext=0p%p *pfkey_ext=0p%p.\n",
+               &pfkey_ext,
+               pfkey_ext,
+               *pfkey_ext);
+errlab:
+       return error;
+}      
+
+int
+pfkey_sa_ref_build(struct sadb_ext **          pfkey_ext,
+                  uint16_t                     exttype,
+                  uint32_t                     spi,
+                  uint8_t                      replay_window,
+                  uint8_t                      sa_state,
+                  uint8_t                      auth,
+                  uint8_t                      encrypt,
+                  uint32_t                     flags,
+                  uint32_t/*IPsecSAref_t*/     ref)
+{
+       int error = 0;
+       struct sadb_sa *pfkey_sa = (struct sadb_sa *)*pfkey_ext;
+
+       DEBUGGING(PF_KEY_DEBUG_BUILD,
+                   "pfkey_sa_build: "
+                   "spi=%08x replay=%d sa_state=%d auth=%d encrypt=%d flags=%d\n",
+                   ntohl(spi), /* in network order */
+                   replay_window,
+                   sa_state,
+                   auth,
+                   encrypt,
+                   flags);
+       /* sanity checks... */
+       if(pfkey_sa) {
+               DEBUGGING(PF_KEY_DEBUG_BUILD,
+                       "pfkey_sa_build: "
+                       "why is pfkey_sa already pointing to something?\n");
+               SENDERR(EINVAL);
+       }
+
+       if(exttype != SADB_EXT_SA &&
+          exttype != SADB_X_EXT_SA2) {
+               DEBUGGING(PF_KEY_DEBUG_BUILD,
+                       "pfkey_sa_build: "
+                       "invalid exttype=%d.\n",
+                       exttype);
+               SENDERR(EINVAL);
+       }
+
+       if(replay_window > 64) {
+               DEBUGGING(PF_KEY_DEBUG_BUILD,
+                       "pfkey_sa_build: "
+                       "replay window size: %d -- must be 0 <= size <= 64\n",
+                       replay_window);
+               SENDERR(EINVAL);
+       }
+
+       if(auth > SADB_AALG_MAX) {
+               DEBUGGING(PF_KEY_DEBUG_BUILD,
+                       "pfkey_sa_build: "
+                       "auth=%d > SADB_AALG_MAX=%d.\n",
+                       auth,
+                       SADB_AALG_MAX);
+               SENDERR(EINVAL);
+       }
+
+#if SADB_EALG_MAX < 255        
+       if(encrypt > SADB_EALG_MAX) {
+               DEBUGGING(PF_KEY_DEBUG_BUILD,
+                       "pfkey_sa_build: "
+                       "encrypt=%d > SADB_EALG_MAX=%d.\n",
+                       encrypt,
+                       SADB_EALG_MAX);
+               SENDERR(EINVAL);
+       }
+#endif
+
+       if(sa_state > SADB_SASTATE_MAX) {
+               DEBUGGING(PF_KEY_DEBUG_BUILD,
+                       "pfkey_sa_build: "
+                       "sa_state=%d exceeds MAX=%d.\n",
+                       sa_state,
+                       SADB_SASTATE_MAX);
+               SENDERR(EINVAL);
+       }
+
+       if(sa_state == SADB_SASTATE_DEAD) {
+               DEBUGGING(PF_KEY_DEBUG_BUILD,
+                       "pfkey_sa_build: "
+                       "sa_state=%d is DEAD=%d is not allowed.\n",
+                       sa_state,
+                       SADB_SASTATE_DEAD);
+               SENDERR(EINVAL);
+       }
+       
+       if((IPSEC_SAREF_NULL != ref) && (ref >= (1 << IPSEC_SA_REF_TABLE_IDX_WIDTH))) {
+               DEBUGGING(PF_KEY_DEBUG_BUILD,
+                         "pfkey_sa_build: "
+                         "SAref=%d must be (SAref == IPSEC_SAREF_NULL(%d) || SAref < IPSEC_SA_REF_TABLE_NUM_ENTRIES(%d)).\n",
+                         ref,
+                         IPSEC_SAREF_NULL,
+                         IPSEC_SA_REF_TABLE_NUM_ENTRIES);
+               SENDERR(EINVAL);
+       }
+       
+       pfkey_sa = (struct sadb_sa*)MALLOC(sizeof(struct sadb_sa));
+       *pfkey_ext = (struct sadb_ext*)pfkey_sa;
+
+       if(pfkey_sa == NULL) {
+               DEBUGGING(PF_KEY_DEBUG_BUILD,
+                       "pfkey_sa_build: "
+                       "memory allocation failed\n");
+               SENDERR(ENOMEM);
+       }
+       memset(pfkey_sa, 0, sizeof(struct sadb_sa));
+       
+       pfkey_sa->sadb_sa_len = sizeof(*pfkey_sa) / IPSEC_PFKEYv2_ALIGN;
+       pfkey_sa->sadb_sa_exttype = exttype;
+       pfkey_sa->sadb_sa_spi = spi;
+       pfkey_sa->sadb_sa_replay = replay_window;
+       pfkey_sa->sadb_sa_state = sa_state;
+       pfkey_sa->sadb_sa_auth = auth;
+       pfkey_sa->sadb_sa_encrypt = encrypt;
+       pfkey_sa->sadb_sa_flags = flags;
+       pfkey_sa->sadb_x_sa_ref = ref;  
+
+errlab:
+       return error;
+}      
+
+int
+pfkey_sa_build(struct sadb_ext **      pfkey_ext,
+              uint16_t                 exttype,
+              uint32_t                 spi,
+              uint8_t                  replay_window,
+              uint8_t                  sa_state,
+              uint8_t                  auth,
+              uint8_t                  encrypt,
+              uint32_t                 flags)
+{
+       return pfkey_sa_ref_build(pfkey_ext,
+                          exttype,
+                          spi,
+                          replay_window,
+                          sa_state,
+                          auth,
+                          encrypt,
+                          flags,
+                          IPSEC_SAREF_NULL);
+}
+
+int
+pfkey_lifetime_build(struct sadb_ext **        pfkey_ext,
+                    uint16_t           exttype,
+                    uint32_t           allocations,
+                    uint64_t           bytes,
+                    uint64_t           addtime,
+                    uint64_t           usetime,
+                    uint32_t           packets)
+{
+       int error = 0;
+       struct sadb_lifetime *pfkey_lifetime = (struct sadb_lifetime *)*pfkey_ext;
+
+       DEBUGGING(PF_KEY_DEBUG_BUILD,
+               "pfkey_lifetime_build:\n");
+       /* sanity checks... */
+       if(pfkey_lifetime) {
+               DEBUGGING(PF_KEY_DEBUG_BUILD,
+                       "pfkey_lifetime_build: "
+                       "why is pfkey_lifetime already pointing to something?\n");
+               SENDERR(EINVAL);
+       }
+
+       if(exttype != SADB_EXT_LIFETIME_CURRENT &&
+          exttype != SADB_EXT_LIFETIME_HARD &&
+          exttype != SADB_EXT_LIFETIME_SOFT) {
+               DEBUGGING(PF_KEY_DEBUG_BUILD,
+                       "pfkey_lifetime_build: "
+                       "invalid exttype=%d.\n",
+                       exttype);
+               SENDERR(EINVAL);
+       }
+
+       pfkey_lifetime = (struct sadb_lifetime*)MALLOC(sizeof(struct sadb_lifetime));
+       *pfkey_ext = (struct sadb_ext*) pfkey_lifetime;
+
+       if(pfkey_lifetime == NULL) {
+               DEBUGGING(PF_KEY_DEBUG_BUILD,
+                       "pfkey_lifetime_build: "
+                       "memory allocation failed\n");
+               SENDERR(ENOMEM);
+       }
+       memset(pfkey_lifetime, 0, sizeof(struct sadb_lifetime));
+
+       pfkey_lifetime->sadb_lifetime_len = sizeof(struct sadb_lifetime) / IPSEC_PFKEYv2_ALIGN;
+       pfkey_lifetime->sadb_lifetime_exttype = exttype;
+       pfkey_lifetime->sadb_lifetime_allocations = allocations;
+       pfkey_lifetime->sadb_lifetime_bytes = bytes;
+       pfkey_lifetime->sadb_lifetime_addtime = addtime;
+       pfkey_lifetime->sadb_lifetime_usetime = usetime;
+       pfkey_lifetime->sadb_x_lifetime_packets = packets;
+
+errlab:
+       return error;
+}
+
+int
+pfkey_address_build(struct sadb_ext**  pfkey_ext,
+                   uint16_t            exttype,
+                   uint8_t             proto,
+                   uint8_t             prefixlen,
+                   struct sockaddr*    address)
+{
+       int error = 0;
+       int saddr_len = 0;
+       char ipaddr_txt[ADDRTOT_BUF + 6/*extra for port number*/];
+       struct sadb_address *pfkey_address = (struct sadb_address *)*pfkey_ext;
+       
+       DEBUGGING(PF_KEY_DEBUG_BUILD,
+               "pfkey_address_build: "
+               "exttype=%d proto=%d prefixlen=%d\n",
+               exttype,
+               proto,
+               prefixlen);
+       /* sanity checks... */
+       if(pfkey_address) {
+               ERROR("pfkey_address_build: "
+                     "why is pfkey_address already pointing to something?\n");
+               SENDERR(EINVAL);
+       }
+
+       if (!address)  {
+                       ERROR("pfkey_address_build: " "address is NULL\n");
+                       SENDERR(EINVAL);
+       }
+       
+       switch(exttype) {       
+       case SADB_EXT_ADDRESS_SRC:
+       case SADB_EXT_ADDRESS_DST:
+       case SADB_EXT_ADDRESS_PROXY:
+       case SADB_X_EXT_ADDRESS_DST2:
+       case SADB_X_EXT_ADDRESS_SRC_FLOW:
+       case SADB_X_EXT_ADDRESS_DST_FLOW:
+       case SADB_X_EXT_ADDRESS_SRC_MASK:
+       case SADB_X_EXT_ADDRESS_DST_MASK:
+#ifdef NAT_TRAVERSAL
+       case SADB_X_EXT_NAT_T_OA:
+#endif 
+               break;
+       default:
+               ERROR("pfkey_address_build: "
+                       "unrecognised ext_type=%d.\n", 
+                       exttype); 
+               SENDERR(EINVAL); 
+       }
+
+       switch(address->sa_family) {
+       case AF_INET:
+               DEBUGGING(PF_KEY_DEBUG_BUILD,
+                       "pfkey_address_build: "
+                       "found address family AF_INET.\n");
+               saddr_len = sizeof(struct sockaddr_in);
+               sprintf(ipaddr_txt, "%d.%d.%d.%d:%d"
+                       , (((struct sockaddr_in*)address)->sin_addr.s_addr >>  0) & 0xFF
+                       , (((struct sockaddr_in*)address)->sin_addr.s_addr >>  8) & 0xFF
+                       , (((struct sockaddr_in*)address)->sin_addr.s_addr >> 16) & 0xFF
+                       , (((struct sockaddr_in*)address)->sin_addr.s_addr >> 24) & 0xFF
+                       , ntohs(((struct sockaddr_in*)address)->sin_port));
+               break;
+       case AF_INET6:
+               DEBUGGING(PF_KEY_DEBUG_BUILD,
+                       "pfkey_address_build: "
+                       "found address family AF_INET6.\n");
+               saddr_len = sizeof(struct sockaddr_in6);
+               sprintf(ipaddr_txt, "%x:%x:%x:%x:%x:%x:%x:%x-%x"
+                       , ntohs(((struct sockaddr_in6*)address)->sin6_addr.s6_addr16[0])
+                       , ntohs(((struct sockaddr_in6*)address)->sin6_addr.s6_addr16[1])
+                       , ntohs(((struct sockaddr_in6*)address)->sin6_addr.s6_addr16[2])
+                       , ntohs(((struct sockaddr_in6*)address)->sin6_addr.s6_addr16[3])
+                       , ntohs(((struct sockaddr_in6*)address)->sin6_addr.s6_addr16[4])
+                       , ntohs(((struct sockaddr_in6*)address)->sin6_addr.s6_addr16[5])
+                       , ntohs(((struct sockaddr_in6*)address)->sin6_addr.s6_addr16[6])
+                       , ntohs(((struct sockaddr_in6*)address)->sin6_addr.s6_addr16[7])
+                       , ntohs(((struct sockaddr_in6*)address)->sin6_port));
+               break;
+       default:
+               ERROR("pfkey_address_build: "
+                     "address->sa_family=%d not supported.\n",
+                     address->sa_family);
+               SENDERR(EPFNOSUPPORT);
+       }
+
+       DEBUGGING(PF_KEY_DEBUG_BUILD,
+               "pfkey_address_build: "
+               "found address=%s.\n",
+               ipaddr_txt);
+       if(prefixlen != 0) {
+               ERROR("pfkey_address_build: "
+                       "address prefixes not supported yet.\n");
+               SENDERR(EAFNOSUPPORT); /* not supported yet */
+       }
+
+       /* allocate some memory for the extension */
+       pfkey_address = (struct sadb_address*)
+               MALLOC(ALIGN_N(sizeof(struct sadb_address) + saddr_len, IPSEC_PFKEYv2_ALIGN));
+       *pfkey_ext = (struct sadb_ext*)pfkey_address;
+
+       if(pfkey_address == NULL ) {
+               ERROR("pfkey_lifetime_build: "
+                       "memory allocation failed\n");
+               SENDERR(ENOMEM);
+       }
+       memset(pfkey_address,
+              0,
+              ALIGN_N(sizeof(struct sadb_address) + saddr_len,
+                    IPSEC_PFKEYv2_ALIGN));
+              
+       pfkey_address->sadb_address_len = DIVUP(sizeof(struct sadb_address) + saddr_len,
+                                               IPSEC_PFKEYv2_ALIGN);
+       
+       pfkey_address->sadb_address_exttype = exttype;
+       pfkey_address->sadb_address_proto = proto;
+       pfkey_address->sadb_address_prefixlen = prefixlen;
+       pfkey_address->sadb_address_reserved = 0;
+
+       memcpy((char*)pfkey_address + sizeof(struct sadb_address),
+              address,
+              saddr_len);
+
+#if 0
+       for(i = 0; i < sizeof(struct sockaddr_in) - offsetof(struct sockaddr_in, sin_zero); i++) {
+               pfkey_address_s_ska.sin_zero[i] = 0;
+       }
+#endif
+       DEBUGGING(PF_KEY_DEBUG_BUILD,
+                 "pfkey_address_build: "
+                 "successful created len: %d.\n", pfkey_address->sadb_address_len);
+
+ errlab:
+       return error;
+}
+
+int
+pfkey_key_build(struct sadb_ext**      pfkey_ext,
+               uint16_t                exttype,
+               uint16_t                key_bits,
+               char*                   key)
+{
+       int error = 0;
+       struct sadb_key *pfkey_key = (struct sadb_key *)*pfkey_ext;
+
+       DEBUGGING(PF_KEY_DEBUG_BUILD,
+               "pfkey_key_build:\n");
+       /* sanity checks... */
+       if(pfkey_key) {
+               ERROR("pfkey_key_build: "
+                       "why is pfkey_key already pointing to something?\n");
+               SENDERR(EINVAL);
+       }
+
+       if(!key_bits) {
+               ERROR("pfkey_key_build: "
+                       "key_bits is zero, it must be non-zero.\n");
+               SENDERR(EINVAL);
+       }
+
+       if( !((exttype == SADB_EXT_KEY_AUTH) || (exttype == SADB_EXT_KEY_ENCRYPT))) {
+               ERROR("pfkey_key_build: "
+                       "unsupported extension type=%d.\n",
+                       exttype);
+               SENDERR(EINVAL);
+       }
+
+       pfkey_key = (struct sadb_key*)
+         MALLOC(sizeof(struct sadb_key) +
+                DIVUP(key_bits, 64) * IPSEC_PFKEYv2_ALIGN);
+
+       *pfkey_ext = (struct sadb_ext*)pfkey_key;
+
+       if(pfkey_key == NULL) {
+               ERROR("pfkey_key_build: "
+                       "memory allocation failed\n");
+               SENDERR(ENOMEM);
+       }
+       memset(pfkey_key,
+              0,
+              sizeof(struct sadb_key) +
+              DIVUP(key_bits, 64) * IPSEC_PFKEYv2_ALIGN);
+       
+       pfkey_key->sadb_key_len = DIVUP(sizeof(struct sadb_key) * IPSEC_PFKEYv2_ALIGN + key_bits,
+                                       64);
+       pfkey_key->sadb_key_exttype = exttype;
+       pfkey_key->sadb_key_bits = key_bits;
+       pfkey_key->sadb_key_reserved = 0;
+       memcpy((char*)pfkey_key + sizeof(struct sadb_key),
+              key,
+              DIVUP(key_bits, 8));
+
+errlab:
+       return error;
+}
+
+int
+pfkey_ident_build(struct sadb_ext**    pfkey_ext,
+                 uint16_t              exttype,
+                 uint16_t              ident_type,
+                 uint64_t              ident_id,
+                 uint8_t               ident_len,
+                 char*                 ident_string)
+{
+       int error = 0;
+       struct sadb_ident *pfkey_ident = (struct sadb_ident *)*pfkey_ext;
+       int data_len = ident_len * IPSEC_PFKEYv2_ALIGN - sizeof(struct sadb_ident);
+
+       DEBUGGING(PF_KEY_DEBUG_BUILD,
+               "pfkey_ident_build:\n");
+       /* sanity checks... */
+       if(pfkey_ident) {
+               ERROR("pfkey_ident_build: "
+                       "why is pfkey_ident already pointing to something?\n");
+               SENDERR(EINVAL);
+       }
+
+       if( ! ((exttype == SADB_EXT_IDENTITY_SRC) ||
+              (exttype == SADB_EXT_IDENTITY_DST))) {
+               ERROR("pfkey_ident_build: "
+                       "unsupported extension type=%d.\n",
+                       exttype);
+               SENDERR(EINVAL);
+       }
+
+       if((ident_type == SADB_IDENTTYPE_RESERVED)) {
+               ERROR("pfkey_ident_build: "
+                       "ident_type must be non-zero.\n");
+               SENDERR(EINVAL);
+       }
+
+       if(ident_type > SADB_IDENTTYPE_MAX) {
+               ERROR("pfkey_ident_build: "
+                       "identtype=%d out of range.\n",
+                       ident_type);
+               SENDERR(EINVAL);
+       }
+
+       if(((ident_type == SADB_IDENTTYPE_PREFIX) ||
+           (ident_type == SADB_IDENTTYPE_FQDN)) &&
+          !ident_string) {
+               ERROR("pfkey_ident_build: "
+                       "string required to allocate size of extension.\n");
+               SENDERR(EINVAL);
+       }
+       
+#if 0
+       if((ident_type == SADB_IDENTTYPE_USERFQDN) ) {
+       }
+#endif
+           
+       pfkey_ident = (struct sadb_ident*)
+         MALLOC(ident_len * IPSEC_PFKEYv2_ALIGN);
+
+       *pfkey_ext = (struct sadb_ext*)pfkey_ident;
+
+       if(pfkey_ident == NULL) {
+               ERROR("pfkey_ident_build: "
+                       "memory allocation failed\n");
+               SENDERR(ENOMEM);
+       }
+       memset(pfkey_ident, 0, ident_len * IPSEC_PFKEYv2_ALIGN);
+       
+       pfkey_ident->sadb_ident_len = ident_len;
+       pfkey_ident->sadb_ident_exttype = exttype;
+       pfkey_ident->sadb_ident_type = ident_type;
+       pfkey_ident->sadb_ident_reserved = 0;
+       pfkey_ident->sadb_ident_id = ident_id;
+       memcpy((char*)pfkey_ident + sizeof(struct sadb_ident),
+              ident_string,
+              data_len);
+
+errlab:
+       return error;
+}
+
+int
+pfkey_sens_build(struct sadb_ext**     pfkey_ext,
+                uint32_t               dpd,
+                uint8_t                sens_level,
+                uint8_t                sens_len,
+                uint64_t*              sens_bitmap,
+                uint8_t                integ_level,
+                uint8_t                integ_len,
+                uint64_t*              integ_bitmap)
+{
+       int error = 0;
+       struct sadb_sens *pfkey_sens = (struct sadb_sens *)*pfkey_ext;
+       int i;
+       uint64_t* bitmap;
+
+       DEBUGGING(PF_KEY_DEBUG_BUILD,
+               "pfkey_sens_build:\n");
+       /* sanity checks... */
+       if(pfkey_sens) {
+               ERROR("pfkey_sens_build: "
+                       "why is pfkey_sens already pointing to something?\n");
+               SENDERR(EINVAL);
+       }
+
+       DEBUGGING(PF_KEY_DEBUG_BUILD,
+               "pfkey_sens_build: "
+               "Sorry, I can't build exttype=%d yet.\n",
+               (*pfkey_ext)->sadb_ext_type);
+       SENDERR(EINVAL); /* don't process these yet */
+
+       pfkey_sens = (struct sadb_sens*)
+         MALLOC(sizeof(struct sadb_sens) +
+                (sens_len + integ_len) * sizeof(uint64_t));
+
+       *pfkey_ext = (struct sadb_ext*)pfkey_sens;
+
+       if(pfkey_sens == NULL) {
+               ERROR("pfkey_sens_build: "
+                       "memory allocation failed\n");
+               SENDERR(ENOMEM);
+       }
+       memset(pfkey_sens,
+              0,
+              sizeof(struct sadb_sens) +
+              (sens_len + integ_len) * sizeof(uint64_t));
+       
+       pfkey_sens->sadb_sens_len = (sizeof(struct sadb_sens) +
+                   (sens_len + integ_len) * sizeof(uint64_t)) / IPSEC_PFKEYv2_ALIGN;
+       pfkey_sens->sadb_sens_exttype = SADB_EXT_SENSITIVITY;
+       pfkey_sens->sadb_sens_dpd = dpd;
+       pfkey_sens->sadb_sens_sens_level = sens_level;
+       pfkey_sens->sadb_sens_sens_len = sens_len;
+       pfkey_sens->sadb_sens_integ_level = integ_level;
+       pfkey_sens->sadb_sens_integ_len = integ_len;
+       pfkey_sens->sadb_sens_reserved = 0;
+
+       bitmap = (uint64_t*)((char*)pfkey_ext + sizeof(struct sadb_sens));
+       for(i = 0; i < sens_len; i++) {
+               *bitmap = sens_bitmap[i];
+               bitmap++;
+       }
+       for(i = 0; i < integ_len; i++) {
+               *bitmap = integ_bitmap[i];
+               bitmap++;
+       }
+
+errlab:
+       return error;
+}
+
+int
+pfkey_prop_build(struct sadb_ext**     pfkey_ext,
+                uint8_t                replay,
+                unsigned int           comb_num,
+                struct sadb_comb*      comb)
+{
+       int error = 0;
+       int i;
+       struct sadb_prop *pfkey_prop = (struct sadb_prop *)*pfkey_ext;
+       struct sadb_comb *combp;
+
+       DEBUGGING(PF_KEY_DEBUG_BUILD,
+               "pfkey_prop_build:\n");
+       /* sanity checks... */
+       if(pfkey_prop) {
+               ERROR("pfkey_prop_build: "
+                       "why is pfkey_prop already pointing to something?\n");
+               SENDERR(EINVAL);
+       }
+
+       pfkey_prop = (struct sadb_prop*)
+         MALLOC(sizeof(struct sadb_prop) +
+                comb_num * sizeof(struct sadb_comb));
+
+       *pfkey_ext = (struct sadb_ext*)pfkey_prop;
+
+       if(pfkey_prop == NULL) {
+               ERROR("pfkey_prop_build: "
+                       "memory allocation failed\n");
+               SENDERR(ENOMEM);
+       }
+       memset(pfkey_prop,
+              0,
+              sizeof(struct sadb_prop) +
+                   comb_num * sizeof(struct sadb_comb));
+       
+       pfkey_prop->sadb_prop_len = (sizeof(struct sadb_prop) +
+                   comb_num * sizeof(struct sadb_comb)) / IPSEC_PFKEYv2_ALIGN;
+
+       pfkey_prop->sadb_prop_exttype = SADB_EXT_PROPOSAL;
+       pfkey_prop->sadb_prop_replay = replay;
+
+       for(i=0; i<3; i++) {
+               pfkey_prop->sadb_prop_reserved[i] = 0;
+       }
+
+       combp = (struct sadb_comb*)((char*)*pfkey_ext + sizeof(struct sadb_prop));
+       for(i = 0; i < comb_num; i++) {
+               memcpy (combp, &(comb[i]), sizeof(struct sadb_comb));
+               combp++;
+       }
+
+#if 0
+  uint8_t sadb_comb_auth;
+  uint8_t sadb_comb_encrypt;
+  uint16_t sadb_comb_flags;
+  uint16_t sadb_comb_auth_minbits;
+  uint16_t sadb_comb_auth_maxbits;
+  uint16_t sadb_comb_encrypt_minbits;
+  uint16_t sadb_comb_encrypt_maxbits;
+  uint32_t sadb_comb_reserved;
+  uint32_t sadb_comb_soft_allocations;
+  uint32_t sadb_comb_hard_allocations;
+  uint64_t sadb_comb_soft_bytes;
+  uint64_t sadb_comb_hard_bytes;
+  uint64_t sadb_comb_soft_addtime;
+  uint64_t sadb_comb_hard_addtime;
+  uint64_t sadb_comb_soft_usetime;
+  uint64_t sadb_comb_hard_usetime;
+  uint32_t sadb_comb_soft_packets;
+  uint32_t sadb_comb_hard_packets;
+#endif
+errlab:
+       return error;
+}
+
+int
+pfkey_supported_build(struct sadb_ext**        pfkey_ext,
+                     uint16_t          exttype,
+                     unsigned int      alg_num,
+                     struct sadb_alg*  alg)
+{
+       int error = 0;
+       unsigned int i;
+       struct sadb_supported *pfkey_supported = (struct sadb_supported *)*pfkey_ext;
+       struct sadb_alg *pfkey_alg;
+
+       /* sanity checks... */
+       if(pfkey_supported) {
+               DEBUGGING(PF_KEY_DEBUG_BUILD,
+                       "pfkey_supported_build: "
+                       "why is pfkey_supported already pointing to something?\n");
+               SENDERR(EINVAL);
+       }
+
+       if( !((exttype == SADB_EXT_SUPPORTED_AUTH) || (exttype == SADB_EXT_SUPPORTED_ENCRYPT))) {
+               DEBUGGING(PF_KEY_DEBUG_BUILD,
+                       "pfkey_supported_build: "
+                       "unsupported extension type=%d.\n",
+                       exttype);
+               SENDERR(EINVAL);
+       }
+
+       pfkey_supported = (struct sadb_supported*)
+         MALLOC(sizeof(struct sadb_supported) +
+                   alg_num *
+                   sizeof(struct sadb_alg));
+
+       *pfkey_ext = (struct sadb_ext*)pfkey_supported;
+
+       if(pfkey_supported == NULL) {
+               DEBUGGING(PF_KEY_DEBUG_BUILD,
+                       "pfkey_supported_build: "
+                       "memory allocation failed\n");
+               SENDERR(ENOMEM);
+       }
+       memset(pfkey_supported,
+              0,
+              sizeof(struct sadb_supported) +
+                                              alg_num *
+                                              sizeof(struct sadb_alg));
+       
+       pfkey_supported->sadb_supported_len = (sizeof(struct sadb_supported) +
+                                              alg_num *
+                                              sizeof(struct sadb_alg)) /
+                                               IPSEC_PFKEYv2_ALIGN;
+       pfkey_supported->sadb_supported_exttype = exttype;
+       pfkey_supported->sadb_supported_reserved = 0;
+
+       pfkey_alg = (struct sadb_alg*)((char*)pfkey_supported + sizeof(struct sadb_supported));
+       for(i = 0; i < alg_num; i++) {
+               memcpy (pfkey_alg, &(alg[i]), sizeof(struct sadb_alg));
+               pfkey_alg->sadb_alg_reserved = 0;
+               pfkey_alg++;
+       }
+       
+#if 0
+       DEBUGGING(PF_KEY_DEBUG_BUILD,
+               "pfkey_supported_build: "
+               "Sorry, I can't build exttype=%d yet.\n",
+               (*pfkey_ext)->sadb_ext_type);
+       SENDERR(EINVAL); /* don't process these yet */
+
+  uint8_t sadb_alg_id;
+  uint8_t sadb_alg_ivlen;
+  uint16_t sadb_alg_minbits;
+  uint16_t sadb_alg_maxbits;
+  uint16_t sadb_alg_reserved;
+#endif
+errlab:
+       return error;
+}
+
+int
+pfkey_spirange_build(struct sadb_ext** pfkey_ext,
+                    uint16_t           exttype,
+                    uint32_t           min, /* in network order */
+                    uint32_t           max) /* in network order */
+{
+       int error = 0;
+       struct sadb_spirange *pfkey_spirange = (struct sadb_spirange *)*pfkey_ext;
+       
+       /* sanity checks... */
+       if(pfkey_spirange) {
+               DEBUGGING(PF_KEY_DEBUG_BUILD,
+                       "pfkey_spirange_build: "
+                       "why is pfkey_spirange already pointing to something?\n");
+               SENDERR(EINVAL);
+       }
+       
+        if(ntohl(max) < ntohl(min)) {
+               DEBUGGING(PF_KEY_DEBUG_BUILD,
+                       "pfkey_spirange_build: "
+                       "minspi=%08x must be < maxspi=%08x.\n",
+                       ntohl(min),
+                       ntohl(max));
+                SENDERR(EINVAL);
+        }
+       
+       if(ntohl(min) <= 255) {
+               DEBUGGING(PF_KEY_DEBUG_BUILD,
+                       "pfkey_spirange_build: "
+                       "minspi=%08x must be > 255.\n",
+                       ntohl(min));
+               SENDERR(EEXIST);
+       }
+       
+       pfkey_spirange = (struct sadb_spirange*)
+         MALLOC(sizeof(struct sadb_spirange));
+
+       *pfkey_ext = (struct sadb_ext*)pfkey_spirange;
+
+       if(pfkey_spirange == NULL) {
+               DEBUGGING(PF_KEY_DEBUG_BUILD,
+                       "pfkey_spirange_build: "
+                       "memory allocation failed\n");
+               SENDERR(ENOMEM);
+       }
+       memset(pfkey_spirange,
+              0,
+              sizeof(struct sadb_spirange));
+       
+        pfkey_spirange->sadb_spirange_len = sizeof(struct sadb_spirange) / IPSEC_PFKEYv2_ALIGN;
+
+       pfkey_spirange->sadb_spirange_exttype = SADB_EXT_SPIRANGE;
+       pfkey_spirange->sadb_spirange_min = min;
+       pfkey_spirange->sadb_spirange_max = max;
+       pfkey_spirange->sadb_spirange_reserved = 0;
+ errlab:
+       return error;
+}
+
+int
+pfkey_x_kmprivate_build(struct sadb_ext**      pfkey_ext)
+{
+       int error = 0;
+       struct sadb_x_kmprivate *pfkey_x_kmprivate = (struct sadb_x_kmprivate *)*pfkey_ext;
+
+       /* sanity checks... */
+       if(pfkey_x_kmprivate) {
+               DEBUGGING(PF_KEY_DEBUG_BUILD,
+                       "pfkey_x_kmprivate_build: "
+                       "why is pfkey_x_kmprivate already pointing to something?\n");
+               SENDERR(EINVAL);
+       }
+       
+       pfkey_x_kmprivate->sadb_x_kmprivate_reserved = 0;
+
+       DEBUGGING(PF_KEY_DEBUG_BUILD,
+               "pfkey_x_kmprivate_build: "
+               "Sorry, I can't build exttype=%d yet.\n",
+               (*pfkey_ext)->sadb_ext_type);
+       SENDERR(EINVAL); /* don't process these yet */
+
+       pfkey_x_kmprivate = (struct sadb_x_kmprivate*)
+         MALLOC(sizeof(struct sadb_x_kmprivate));
+
+       *pfkey_ext = (struct sadb_ext*)pfkey_x_kmprivate;
+
+       if(pfkey_x_kmprivate == NULL) {
+               DEBUGGING(PF_KEY_DEBUG_BUILD,
+                       "pfkey_x_kmprivate_build: "
+                       "memory allocation failed\n");
+               SENDERR(ENOMEM);
+       }
+       memset(pfkey_x_kmprivate,
+              0,
+              sizeof(struct sadb_x_kmprivate));
+       
+        pfkey_x_kmprivate->sadb_x_kmprivate_len =
+               sizeof(struct sadb_x_kmprivate) / IPSEC_PFKEYv2_ALIGN;
+
+        pfkey_x_kmprivate->sadb_x_kmprivate_exttype = SADB_X_EXT_KMPRIVATE;
+        pfkey_x_kmprivate->sadb_x_kmprivate_reserved = 0;
+errlab:
+       return error;
+}
+
+int
+pfkey_x_satype_build(struct sadb_ext** pfkey_ext,
+                    uint8_t            satype)
+{
+       int error = 0;
+       int i;
+       struct sadb_x_satype *pfkey_x_satype = (struct sadb_x_satype *)*pfkey_ext;
+
+       DEBUGGING(PF_KEY_DEBUG_BUILD,
+               "pfkey_x_satype_build:\n");
+       /* sanity checks... */
+       if(pfkey_x_satype) {
+               ERROR("pfkey_x_satype_build: "
+                       "why is pfkey_x_satype already pointing to something?\n");
+               SENDERR(EINVAL);
+       }
+       
+       if(!satype) {
+               ERROR("pfkey_x_satype_build: "
+                       "SA type not set, must be non-zero.\n");
+               SENDERR(EINVAL);
+       }
+
+       if(satype > SADB_SATYPE_MAX) {
+               ERROR("pfkey_x_satype_build: "
+                       "satype %d > max %d\n", 
+                       satype, SADB_SATYPE_MAX);
+               SENDERR(EINVAL);
+       }
+
+       pfkey_x_satype = (struct sadb_x_satype*)
+         MALLOC(sizeof(struct sadb_x_satype));
+
+       *pfkey_ext = (struct sadb_ext*)pfkey_x_satype;
+       if(pfkey_x_satype == NULL) {
+               ERROR("pfkey_x_satype_build: "
+                       "memory allocation failed\n");
+               SENDERR(ENOMEM);
+       }
+       memset(pfkey_x_satype,
+              0,
+              sizeof(struct sadb_x_satype));
+       
+        pfkey_x_satype->sadb_x_satype_len = sizeof(struct sadb_x_satype) / IPSEC_PFKEYv2_ALIGN;
+
+       pfkey_x_satype->sadb_x_satype_exttype = SADB_X_EXT_SATYPE2;
+       pfkey_x_satype->sadb_x_satype_satype = satype;
+       for(i=0; i<3; i++) {
+               pfkey_x_satype->sadb_x_satype_reserved[i] = 0;
+       }
+
+errlab:
+       return error;
+}
+
+int
+pfkey_x_debug_build(struct sadb_ext**  pfkey_ext,
+                   uint32_t            tunnel,
+                   uint32_t            netlink,
+                   uint32_t            xform,
+                   uint32_t            eroute,
+                   uint32_t            spi,
+                   uint32_t            radij,
+                   uint32_t            esp,
+                   uint32_t            ah,
+                   uint32_t            rcv,
+                   uint32_t            pfkey,
+                   uint32_t            ipcomp,
+                   uint32_t            verbose)
+{
+       int error = 0;
+       int i;
+       struct sadb_x_debug *pfkey_x_debug = (struct sadb_x_debug *)*pfkey_ext;
+
+       DEBUGGING(PF_KEY_DEBUG_BUILD,
+               "pfkey_x_debug_build:\n");
+       /* sanity checks... */
+       if(pfkey_x_debug) {
+               ERROR("pfkey_x_debug_build: "
+                       "why is pfkey_x_debug already pointing to something?\n");
+               SENDERR(EINVAL);
+       }
+       
+       DEBUGGING(PF_KEY_DEBUG_BUILD,
+               "pfkey_x_debug_build: "
+               "tunnel=%x netlink=%x xform=%x eroute=%x spi=%x radij=%x esp=%x ah=%x rcv=%x pfkey=%x ipcomp=%x verbose=%x?\n",
+               tunnel, netlink, xform, eroute, spi, radij, esp, ah, rcv, pfkey, ipcomp, verbose);
+
+       pfkey_x_debug = (struct sadb_x_debug*)
+         MALLOC(sizeof(struct sadb_x_debug));
+
+       *pfkey_ext = (struct sadb_ext*)pfkey_x_debug;
+
+       if(pfkey_x_debug == NULL) {
+               ERROR("pfkey_x_debug_build: "
+                       "memory allocation failed\n");
+               SENDERR(ENOMEM);
+       }
+#if 0
+       memset(pfkey_x_debug,
+              0,
+              sizeof(struct sadb_x_debug));
+#endif
+       
+        pfkey_x_debug->sadb_x_debug_len = sizeof(struct sadb_x_debug) / IPSEC_PFKEYv2_ALIGN;
+       pfkey_x_debug->sadb_x_debug_exttype = SADB_X_EXT_DEBUG;
+
+       pfkey_x_debug->sadb_x_debug_tunnel = tunnel;
+       pfkey_x_debug->sadb_x_debug_netlink = netlink;
+       pfkey_x_debug->sadb_x_debug_xform = xform;
+       pfkey_x_debug->sadb_x_debug_eroute = eroute;
+       pfkey_x_debug->sadb_x_debug_spi = spi;
+       pfkey_x_debug->sadb_x_debug_radij = radij;
+       pfkey_x_debug->sadb_x_debug_esp = esp;
+       pfkey_x_debug->sadb_x_debug_ah = ah;
+       pfkey_x_debug->sadb_x_debug_rcv = rcv;
+       pfkey_x_debug->sadb_x_debug_pfkey = pfkey;
+       pfkey_x_debug->sadb_x_debug_ipcomp = ipcomp;
+       pfkey_x_debug->sadb_x_debug_verbose = verbose;
+
+       for(i=0; i<4; i++) {
+               pfkey_x_debug->sadb_x_debug_reserved[i] = 0;
+       }
+
+errlab:
+       return error;
+}
+
+int
+pfkey_x_nat_t_type_build(struct sadb_ext**     pfkey_ext,
+                        uint8_t         type)
+{
+       int error = 0;
+       int i;
+       struct sadb_x_nat_t_type *pfkey_x_nat_t_type = (struct sadb_x_nat_t_type *)*pfkey_ext;
+
+       DEBUGGING(PF_KEY_DEBUG_BUILD,
+               "pfkey_x_nat_t_type_build:\n");
+       /* sanity checks... */
+       if(pfkey_x_nat_t_type) {
+               DEBUGGING(PF_KEY_DEBUG_BUILD,
+                       "pfkey_x_nat_t_type_build: "
+                       "why is pfkey_x_nat_t_type already pointing to something?\n");
+               SENDERR(EINVAL);
+       }
+       
+       DEBUGGING(PF_KEY_DEBUG_BUILD,
+               "pfkey_x_nat_t_type_build: "
+               "type=%d\n", type);
+
+       pfkey_x_nat_t_type = (struct sadb_x_nat_t_type*)
+         MALLOC(sizeof(struct sadb_x_nat_t_type));
+
+       *pfkey_ext = (struct sadb_ext*)pfkey_x_nat_t_type;
+
+       if(pfkey_x_nat_t_type == NULL) {
+               DEBUGGING(PF_KEY_DEBUG_BUILD,
+                       "pfkey_x_nat_t_type_build: "
+                       "memory allocation failed\n");
+               SENDERR(ENOMEM);
+       }
+       
+       pfkey_x_nat_t_type->sadb_x_nat_t_type_len = sizeof(struct sadb_x_nat_t_type) / IPSEC_PFKEYv2_ALIGN;
+       pfkey_x_nat_t_type->sadb_x_nat_t_type_exttype = SADB_X_EXT_NAT_T_TYPE;
+       pfkey_x_nat_t_type->sadb_x_nat_t_type_type = type;
+       for(i=0; i<3; i++) {
+               pfkey_x_nat_t_type->sadb_x_nat_t_type_reserved[i] = 0;
+       }
+
+errlab:
+       return error;
+}
+int
+pfkey_x_nat_t_port_build(struct sadb_ext**     pfkey_ext,
+                   uint16_t         exttype,
+                   uint16_t         port)
+{
+       int error = 0;
+       struct sadb_x_nat_t_port *pfkey_x_nat_t_port = (struct sadb_x_nat_t_port *)*pfkey_ext;
+
+       DEBUGGING(PF_KEY_DEBUG_BUILD,
+               "pfkey_x_nat_t_port_build:\n");
+       /* sanity checks... */
+       if(pfkey_x_nat_t_port) {
+               DEBUGGING(PF_KEY_DEBUG_BUILD,
+                       "pfkey_x_nat_t_port_build: "
+                       "why is pfkey_x_nat_t_port already pointing to something?\n");
+               SENDERR(EINVAL);
+       }
+       
+       switch(exttype) {       
+       case SADB_X_EXT_NAT_T_SPORT:
+       case SADB_X_EXT_NAT_T_DPORT:
+               break;
+       default:
+               DEBUGGING(PF_KEY_DEBUG_BUILD,
+                       "pfkey_nat_t_port_build: "
+                       "unrecognised ext_type=%d.\n", 
+                       exttype); 
+               SENDERR(EINVAL); 
+       }
+
+       DEBUGGING(PF_KEY_DEBUG_BUILD,
+               "pfkey_x_nat_t_port_build: "
+               "ext=%d, port=%d\n", exttype, port);
+
+       pfkey_x_nat_t_port = (struct sadb_x_nat_t_port*)
+         MALLOC(sizeof(struct sadb_x_nat_t_port));
+
+       *pfkey_ext = (struct sadb_ext*)pfkey_x_nat_t_port;
+
+       if(pfkey_x_nat_t_port == NULL) {
+               DEBUGGING(PF_KEY_DEBUG_BUILD,
+                       "pfkey_x_nat_t_port_build: "
+                       "memory allocation failed\n");
+               SENDERR(ENOMEM);
+       }
+       
+       pfkey_x_nat_t_port->sadb_x_nat_t_port_len = sizeof(struct sadb_x_nat_t_port) / IPSEC_PFKEYv2_ALIGN;
+       pfkey_x_nat_t_port->sadb_x_nat_t_port_exttype = exttype;
+       pfkey_x_nat_t_port->sadb_x_nat_t_port_port = port;
+       pfkey_x_nat_t_port->sadb_x_nat_t_port_reserved = 0;
+
+errlab:
+       return error;
+}
+
+int pfkey_x_protocol_build(struct sadb_ext **pfkey_ext,
+                          uint8_t protocol)
+{
+       int error = 0;
+       struct sadb_protocol * p = (struct sadb_protocol *)*pfkey_ext;
+       DEBUGGING(PF_KEY_DEBUG_BUILD,"pfkey_x_protocol_build: protocol=%u\n", protocol);
+       /* sanity checks... */
+       if  (p != 0) {
+               ERROR("pfkey_x_protocol_build: bogus protocol pointer\n");
+               SENDERR(EINVAL);
+       }
+       if ((p = (struct sadb_protocol*)MALLOC(sizeof(*p))) == 0) {
+               ERROR("pfkey_build: memory allocation failed\n");
+               SENDERR(ENOMEM);
+       }
+       *pfkey_ext = (struct sadb_ext *)p;
+       p->sadb_protocol_len = sizeof(*p) / sizeof(uint64_t);
+       p->sadb_protocol_exttype = SADB_X_EXT_PROTOCOL;
+       p->sadb_protocol_proto = protocol;
+       p->sadb_protocol_flags = 0;
+       p->sadb_protocol_reserved2 = 0;
+ errlab:
+       return error;
+}
+
+int
+pfkey_msg_build(struct sadb_msg **pfkey_msg, struct sadb_ext *extensions[], int dir)
+{
+       int error = 0;
+       unsigned ext;
+       unsigned total_size;
+       struct sadb_ext *pfkey_ext;
+       int extensions_seen = 0;
+#ifndef __KERNEL__     
+       struct sadb_ext *extensions_check[SADB_EXT_MAX + 1];
+#endif
+       
+       if(!extensions[0]) {
+               ERROR("pfkey_msg_build: "
+                       "extensions[0] must be specified (struct sadb_msg).\n");
+               SENDERR(EINVAL);
+       }
+
+       /* figure out the total size for all the requested extensions */
+       total_size = IPSEC_PFKEYv2_WORDS(sizeof(struct sadb_msg));
+       for(ext = 1; ext <= SADB_EXT_MAX; ext++) {
+               if(extensions[ext]) {
+                       total_size += (extensions[ext])->sadb_ext_len;
+               }
+        }                
+
+       /* allocate that much space */
+       *pfkey_msg = (struct sadb_msg*)MALLOC(total_size * IPSEC_PFKEYv2_ALIGN);
+       if(*pfkey_msg == NULL) {
+               ERROR("pfkey_msg_build: "
+                     "memory allocation failed\n");
+               SENDERR(ENOMEM);
+       }
+       
+       DEBUGGING(PF_KEY_DEBUG_BUILD,
+                 "pfkey_msg_build: "
+                 "pfkey_msg=0p%p allocated %lu bytes, &(extensions[0])=0p%p\n",
+                 *pfkey_msg,
+                 (unsigned long)(total_size * IPSEC_PFKEYv2_ALIGN),
+                 &(extensions[0]));
+
+       memcpy(*pfkey_msg,
+              extensions[0],
+              sizeof(struct sadb_msg));
+       (*pfkey_msg)->sadb_msg_len = total_size;
+       (*pfkey_msg)->sadb_msg_reserved = 0;
+       extensions_seen =  1 ;
+       
+       /*
+        * point pfkey_ext to immediately after the space for the header,
+        * i.e. at the first extension location.
+        */
+       pfkey_ext = (struct sadb_ext*)(((char*)(*pfkey_msg)) + sizeof(struct sadb_msg));
+
+       for(ext = 1; ext <= SADB_EXT_MAX; ext++) {
+               /* copy from extension[ext] to buffer */
+               if(extensions[ext]) {    
+                       /* Is this type of extension permitted for this type of message? */
+                       if(!(extensions_bitmaps[dir][EXT_BITS_PERM][(*pfkey_msg)->sadb_msg_type] &
+                            1<<ext)) {
+                               ERROR("pfkey_msg_build: "
+                                       "ext type %d not permitted, exts_perm=%08x, 1<<type=%08x\n", 
+                                       ext, 
+                                       extensions_bitmaps[dir][EXT_BITS_PERM][(*pfkey_msg)->sadb_msg_type],
+                                       1<<ext);
+                               SENDERR(EINVAL);
+                       }
+
+                       DEBUGGING(PF_KEY_DEBUG_BUILD,
+                                 "pfkey_msg_build: "
+                                 "copying %lu bytes from extensions[%u] (type=%d)\n",
+                                 (unsigned long)(extensions[ext]->sadb_ext_len * IPSEC_PFKEYv2_ALIGN),
+                                 ext,
+                                 extensions[ext]->sadb_ext_type);
+
+                       memcpy(pfkey_ext,
+                              extensions[ext],
+                              (extensions[ext])->sadb_ext_len * IPSEC_PFKEYv2_ALIGN);
+                       {
+                         char *pfkey_ext_c = (char *)pfkey_ext;
+
+                         pfkey_ext_c += (extensions[ext])->sadb_ext_len * IPSEC_PFKEYv2_ALIGN;
+                         pfkey_ext = (struct sadb_ext *)pfkey_ext_c;
+                       }
+
+                       /* Mark that we have seen this extension and remember the header location */
+                       extensions_seen |= ( 1 << ext );
+               }
+       }
+
+       /* check required extensions */
+       DEBUGGING(PF_KEY_DEBUG_BUILD,
+               "pfkey_msg_build: "
+               "extensions permitted=%08x, seen=%08x, required=%08x.\n",
+               extensions_bitmaps[dir][EXT_BITS_PERM][(*pfkey_msg)->sadb_msg_type],
+               extensions_seen,
+               extensions_bitmaps[dir][EXT_BITS_REQ][(*pfkey_msg)->sadb_msg_type]);
+       
+       if((extensions_seen &
+           extensions_bitmaps[dir][EXT_BITS_REQ][(*pfkey_msg)->sadb_msg_type]) !=
+          extensions_bitmaps[dir][EXT_BITS_REQ][(*pfkey_msg)->sadb_msg_type]) {
+               DEBUGGING(PF_KEY_DEBUG_BUILD,
+                       "pfkey_msg_build: "
+                       "required extensions missing:%08x.\n",
+                       extensions_bitmaps[dir][EXT_BITS_REQ][(*pfkey_msg)->sadb_msg_type] -
+                       (extensions_seen &
+                        extensions_bitmaps[dir][EXT_BITS_REQ][(*pfkey_msg)->sadb_msg_type]) );
+               SENDERR(EINVAL);
+       }
+
+#ifndef __KERNEL__     
+/*
+ * this is silly, there is no need to reparse the message that we just built.
+ *
+ */
+       if((error = pfkey_msg_parse(*pfkey_msg, NULL, extensions_check, dir))) {
+               ERROR(
+                       "pfkey_msg_build: "
+                       "Trouble parsing newly built pfkey message, error=%d.\n",
+                       error);
+               SENDERR(-error);
+       }
+#endif
+
+errlab:
+
+       return error;
+}
+
+/*
+ * $Log: pfkey_v2_build.c,v $
+ * Revision 1.51.8.1  2006-05-01 14:36:39  mcr
+ * get rid of dead code.
+ *
+ * Revision 1.51  2004/10/03 01:26:36  mcr
+ *     fixes for gcc 3.4 compilation.
+ *
+ * Revision 1.50  2004/07/10 07:48:35  mcr
+ * Moved from linux/lib/libfreeswan/pfkey_v2_build.c,v
+ *
+ * Revision 1.49  2004/04/12 02:59:06  mcr
+ *     erroneously moved pfkey_v2_build.c
+ *
+ * Revision 1.48  2004/04/09 18:00:40  mcr
+ * Moved from linux/lib/libfreeswan/pfkey_v2_build.c,v
+ *
+ * Revision 1.47  2004/03/08 01:59:08  ken
+ * freeswan.h -> openswan.h
+ *
+ * Revision 1.46  2003/12/10 01:20:19  mcr
+ *     NAT-traversal patches to KLIPS.
+ *
+ * Revision 1.45  2003/12/04 23:01:12  mcr
+ *     removed ipsec_netlink.h
+ *
+ * Revision 1.44  2003/10/31 02:27:12  mcr
+ *     pulled up port-selector patches and sa_id elimination.
+ *
+ * Revision 1.43.4.2  2003/10/29 01:11:32  mcr
+ *     added debugging for pfkey library.
+ *
+ * Revision 1.43.4.1  2003/09/21 13:59:44  mcr
+ *     pre-liminary X.509 patch - does not yet pass tests.
+ *
+ * Revision 1.43  2003/05/07 17:29:17  mcr
+ *     new function pfkey_debug_func added for us in debugging from
+ *     pfkey library.
+ *
+ * Revision 1.42  2003/01/30 02:32:09  rgb
+ *
+ * Rename SAref table macro names for clarity.
+ * Convert IPsecSAref_t from signed to unsigned to fix apparent SAref exhaustion bug.
+ *
+ * Revision 1.41  2002/12/13 18:16:02  mcr
+ *     restored sa_ref code
+ *
+ * Revision 1.40  2002/12/13 18:06:52  mcr
+ *     temporarily removed sadb_x_sa_ref reference for 2.xx
+ *
+ * Revision 1.39  2002/12/13 17:43:28  mcr
+ *     commented out access to sadb_x_sa_ref for 2.xx branch
+ *
+ * Revision 1.38  2002/10/09 03:12:05  dhr
+ *
+ * [kenb+dhr] 64-bit fixes
+ *
+ * Revision 1.37  2002/09/20 15:40:39  rgb
+ * Added new function pfkey_sa_ref_build() to accomodate saref parameter.
+ *
+ * Revision 1.36  2002/09/20 05:01:22  rgb
+ * Generalise for platform independance: fix (ia64) using unsigned for sizes.
+ *
+ * Revision 1.35  2002/07/24 18:44:54  rgb
+ * Type fiddling to tame ia64 compiler.
+ *
+ * Revision 1.34  2002/05/23 07:14:11  rgb
+ * Cleaned up %p variants to 0p%p for test suite cleanup.
+ *
+ * Revision 1.33  2002/04/24 07:55:32  mcr
+ *     #include patches and Makefiles for post-reorg compilation.
+ *
+ * Revision 1.32  2002/04/24 07:36:40  mcr
+ * Moved from ./lib/pfkey_v2_build.c,v
+ *
+ * Revision 1.31  2002/01/29 22:25:35  rgb
+ * Re-add ipsec_kversion.h to keep MALLOC happy.
+ *
+ * Revision 1.30  2002/01/29 01:59:09  mcr
+ *     removal of kversions.h - sources that needed it now use ipsec_param.h.
+ *     updating of IPv6 structures to match latest in6.h version.
+ *     removed dead code from openswan.h that also duplicated kversions.h
+ *     code.
+ *
+ * Revision 1.29  2001/12/19 21:06:09  rgb
+ * Added port numbers to pfkey_address_build() debugging.
+ *
+ * Revision 1.28  2001/11/06 19:47:47  rgb
+ * Added packet parameter to lifetime and comb structures.
+ *
+ * Revision 1.27  2001/10/18 04:45:24  rgb
+ * 2.4.9 kernel deprecates linux/malloc.h in favour of linux/slab.h,
+ * lib/openswan.h version macros moved to lib/kversions.h.
+ * Other compiler directive cleanups.
+ *
+ * Revision 1.26  2001/09/08 21:13:34  rgb
+ * Added pfkey ident extension support for ISAKMPd. (NetCelo)
+ *
+ * Revision 1.25  2001/06/14 19:35:16  rgb
+ * Update copyright date.
+ *
+ * Revision 1.24  2001/03/20 03:49:45  rgb
+ * Ditch superfluous debug_pfkey declaration.
+ * Move misplaced openswan.h inclusion for kernel case.
+ *
+ * Revision 1.23  2001/03/16 07:41:50  rgb
+ * Put openswan.h include before pluto includes.
+ *
+ * Revision 1.22  2001/02/27 22:24:56  rgb
+ * Re-formatting debug output (line-splitting, joining, 1arg/line).
+ * Check for satoa() return codes.
+ *
+ * Revision 1.21  2000/11/17 18:10:30  rgb
+ * Fixed bugs mostly relating to spirange, to treat all spi variables as
+ * network byte order since this is the way PF_KEYv2 stored spis.
+ *
+ * Revision 1.20  2000/10/12 00:02:39  rgb
+ * Removed 'format, ##' nonsense from debug macros for RH7.0.
+ *
+ * Revision 1.19  2000/10/10 20:10:20  rgb
+ * Added support for debug_ipcomp and debug_verbose to klipsdebug.
+ *
+ * Revision 1.18  2000/09/12 18:59:54  rgb
+ * Added Gerhard's IPv6 support to pfkey parts of libopenswan.
+ *
+ * Revision 1.17  2000/09/12 03:27:00  rgb
+ * Moved DEBUGGING definition to compile kernel with debug off.
+ *
+ * Revision 1.16  2000/09/08 19:22:12  rgb
+ * Fixed pfkey_prop_build() parameter to be only single indirection.
+ * Fixed struct alg copy.
+ *
+ * Revision 1.15  2000/08/20 21:40:01  rgb
+ * Added an address parameter sanity check to pfkey_address_build().
+ *
+ * Revision 1.14  2000/08/15 17:29:23  rgb
+ * Fixes from SZI to untested pfkey_prop_build().
+ *
+ * Revision 1.13  2000/06/02 22:54:14  rgb
+ * Added Gerhard Gessler's struct sockaddr_storage mods for IPv6 support.
+ *
+ * Revision 1.12  2000/05/10 19:24:01  rgb
+ * Fleshed out sensitivity, proposal and supported extensions.
+ *
+ * Revision 1.11  2000/03/16 14:07:23  rgb
+ * Renamed ALIGN macro to avoid fighting with others in kernel.
+ *
+ * Revision 1.10  2000/01/24 21:14:35  rgb
+ * Added disabled pluto pfkey lib debug flag.
+ *
+ * Revision 1.9  2000/01/21 06:27:32  rgb
+ * Added address cases for eroute flows.
+ * Removed unused code.
+ * Dropped unused argument to pfkey_x_satype_build().
+ * Indented compiler directives for readability.
+ * Added klipsdebug switching capability.
+ * Fixed SADB_EXT_MAX bug not permitting last extension access.
+ *
+ * Revision 1.8  1999/12/29 21:17:41  rgb
+ * Changed pfkey_msg_build() I/F to include a struct sadb_msg**
+ * parameter for cleaner manipulation of extensions[] and to guard
+ * against potential memory leaks.
+ * Changed the I/F to pfkey_msg_free() for the same reason.
+ *
+ * Revision 1.7  1999/12/09 23:12:20  rgb
+ * Removed unused cruft.
+ * Added argument to pfkey_sa_build() to do eroutes.
+ * Fixed exttype check in as yet unused pfkey_lifetime_build().
+ *
+ * Revision 1.6  1999/12/07 19:54:29  rgb
+ * Removed static pluto debug flag.
+ * Added functions for pfkey message and extensions initialisation
+ * and cleanup.
+ *
+ * Revision 1.5  1999/12/01 22:20:06  rgb
+ * Changed pfkey_sa_build to accept an SPI in network byte order.
+ * Added <string.h> to quiet userspace compiler.
+ * Moved pfkey_lib_debug variable into the library.
+ * Removed SATYPE check from pfkey_msg_hdr_build so FLUSH will work.
+ * Added extension assembly debugging.
+ * Isolated assignment with brackets to be sure of scope.
+ *
+ * Revision 1.4  1999/11/27 11:57:35  rgb
+ * Added ipv6 headers.
+ * Remove over-zealous algorithm sanity checkers from pfkey_sa_build.
+ * Debugging error messages added.
+ * Fixed missing auth and encrypt assignment bug.
+ * Add argument to pfkey_msg_parse() for direction.
+ * Move parse-after-build check inside pfkey_msg_build().
+ * Consolidated the 4 1-d extension bitmap arrays into one 4-d array.
+ * Add CVS log entry to bottom of file.
+ *
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/pfkey_v2_debug.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,181 @@
+/*
+ * @(#) pfkey version 2 debugging messages
+ *
+ * Copyright (C) 2001  Richard Guy Briggs  <rgb@openswan.org>
+ *                 and Michael Richardson  <mcr@openswan.org>
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id: pfkey_v2_debug.c,v 1.11 2005-04-06 17:45:16 mcr Exp $
+ *
+ */
+
+#ifdef __KERNEL__
+
+# include <linux/kernel.h>  /* for printk */
+
+# include "openswan/ipsec_kversion.h" /* for malloc switch */
+# ifdef MALLOC_SLAB
+#  include <linux/slab.h> /* kmalloc() */
+# else /* MALLOC_SLAB */
+#  include <linux/malloc.h> /* kmalloc() */
+# endif /* MALLOC_SLAB */
+# include <linux/errno.h>  /* error codes */
+# include <linux/types.h>  /* size_t */
+# include <linux/interrupt.h> /* mark_bh */
+
+# include <linux/netdevice.h>   /* struct device, and other headers */
+# include <linux/etherdevice.h> /* eth_type_trans */
+extern int debug_pfkey;
+
+#else /* __KERNEL__ */
+
+# include <sys/types.h>
+# include <linux/types.h>
+# include <linux/errno.h>
+
+#endif /* __KERNEL__ */
+
+#include "openswan.h"
+#include "pfkeyv2.h"
+#include "pfkey.h"
+
+/* 
+ * This file provides ASCII translations of PF_KEY magic numbers.
+ *
+ */
+
+static char *pfkey_sadb_ext_strings[]={
+  "reserved",                     /* SADB_EXT_RESERVED             0 */
+  "security-association",         /* SADB_EXT_SA                   1 */
+  "lifetime-current",             /* SADB_EXT_LIFETIME_CURRENT     2 */
+  "lifetime-hard",                /* SADB_EXT_LIFETIME_HARD        3 */
+  "lifetime-soft",                /* SADB_EXT_LIFETIME_SOFT        4 */
+  "source-address",               /* SADB_EXT_ADDRESS_SRC          5 */
+  "destination-address",          /* SADB_EXT_ADDRESS_DST          6 */
+  "proxy-address",                /* SADB_EXT_ADDRESS_PROXY        7 */
+  "authentication-key",           /* SADB_EXT_KEY_AUTH             8 */
+  "cipher-key",                   /* SADB_EXT_KEY_ENCRYPT          9 */
+  "source-identity",              /* SADB_EXT_IDENTITY_SRC         10 */
+  "destination-identity",         /* SADB_EXT_IDENTITY_DST         11 */
+  "sensitivity-label",            /* SADB_EXT_SENSITIVITY          12 */
+  "proposal",                     /* SADB_EXT_PROPOSAL             13 */
+  "supported-auth",               /* SADB_EXT_SUPPORTED_AUTH       14 */
+  "supported-cipher",             /* SADB_EXT_SUPPORTED_ENCRYPT    15 */
+  "spi-range",                    /* SADB_EXT_SPIRANGE             16 */
+  "X-kmpprivate",                 /* SADB_X_EXT_KMPRIVATE          17 */
+  "X-satype2",                    /* SADB_X_EXT_SATYPE2            18 */
+  "X-security-association",       /* SADB_X_EXT_SA2                19 */
+  "X-destination-address2",       /* SADB_X_EXT_ADDRESS_DST2       20 */
+  "X-source-flow-address",        /* SADB_X_EXT_ADDRESS_SRC_FLOW   21 */
+  "X-dest-flow-address",          /* SADB_X_EXT_ADDRESS_DST_FLOW   22 */
+  "X-source-mask",                /* SADB_X_EXT_ADDRESS_SRC_MASK   23 */
+  "X-dest-mask",                  /* SADB_X_EXT_ADDRESS_DST_MASK   24 */
+  "X-set-debug",                  /* SADB_X_EXT_DEBUG              25 */
+  /* NAT_TRAVERSAL */
+  "X-NAT-T-type",                 /* SADB_X_EXT_NAT_T_TYPE         26 */
+  "X-NAT-T-sport",                /* SADB_X_EXT_NAT_T_SPORT        27 */
+  "X-NAT-T-dport",                /* SADB_X_EXT_NAT_T_DPORT        28 */
+  "X-NAT-T-OA",                   /* SADB_X_EXT_NAT_T_OA           29 */
+};
+
+const char *
+pfkey_v2_sadb_ext_string(int ext)
+{
+  if(ext <= SADB_EXT_MAX) {
+    return pfkey_sadb_ext_strings[ext];
+  } else {
+    return "unknown-ext";
+  }
+}
+
+
+static char *pfkey_sadb_type_strings[]={
+       "reserved",                     /* SADB_RESERVED      */
+       "getspi",                       /* SADB_GETSPI        */
+       "update",                       /* SADB_UPDATE        */
+       "add",                          /* SADB_ADD           */
+       "delete",                       /* SADB_DELETE        */
+       "get",                          /* SADB_GET           */
+       "acquire",                      /* SADB_ACQUIRE       */
+       "register",                     /* SADB_REGISTER      */
+       "expire",                       /* SADB_EXPIRE        */
+       "flush",                        /* SADB_FLUSH         */
+       "dump",                         /* SADB_DUMP          */
+       "x-promisc",                    /* SADB_X_PROMISC     */
+       "x-pchange",                    /* SADB_X_PCHANGE     */
+       "x-groupsa",                    /* SADB_X_GRPSA       */
+       "x-addflow(eroute)",            /* SADB_X_ADDFLOW     */
+       "x-delflow(eroute)",            /* SADB_X_DELFLOW     */
+       "x-debug",                      /* SADB_X_DEBUG       */
+};
+
+const char *
+pfkey_v2_sadb_type_string(int sadb_type)
+{
+  if(sadb_type <= SADB_MAX) {
+    return pfkey_sadb_type_strings[sadb_type];
+  } else {
+    return "unknown-sadb-type";
+  }
+}
+
+
+
+
+/*
+ * $Log: pfkey_v2_debug.c,v $
+ * Revision 1.11  2005-04-06 17:45:16  mcr
+ *     always include NAT-T names.
+ *
+ * Revision 1.10  2004/07/10 07:48:35  mcr
+ * Moved from linux/lib/libfreeswan/pfkey_v2_debug.c,v
+ *
+ * Revision 1.9  2004/03/08 01:59:08  ken
+ * freeswan.h -> openswan.h
+ *
+ * Revision 1.8  2003/12/10 01:20:19  mcr
+ *     NAT-traversal patches to KLIPS.
+ *
+ * Revision 1.7  2002/09/20 05:01:26  rgb
+ * Fixed limit inclusion error in both type and ext string conversion.
+ *
+ * Revision 1.6  2002/04/24 07:55:32  mcr
+ *     #include patches and Makefiles for post-reorg compilation.
+ *
+ * Revision 1.5  2002/04/24 07:36:40  mcr
+ * Moved from ./lib/pfkey_v2_debug.c,v
+ *
+ * Revision 1.4  2002/01/29 22:25:36  rgb
+ * Re-add ipsec_kversion.h to keep MALLOC happy.
+ *
+ * Revision 1.3  2002/01/29 01:59:09  mcr
+ *     removal of kversions.h - sources that needed it now use ipsec_param.h.
+ *     updating of IPv6 structures to match latest in6.h version.
+ *     removed dead code from openswan.h that also duplicated kversions.h
+ *     code.
+ *
+ * Revision 1.2  2002/01/20 20:34:50  mcr
+ *     added pfkey_v2_sadb_type_string to decode sadb_type to string.
+ *
+ * Revision 1.1  2001/11/27 05:30:06  mcr
+ *     initial set of debug strings for pfkey debugging.
+ *     this will eventually only be included for debug builds.
+ *
+ * Revision 1.1  2001/09/21 04:12:03  mcr
+ *     first compilable version.
+ *
+ *
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ *
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/pfkey_v2_ext_bits.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,814 @@
+/*
+ * RFC2367 PF_KEYv2 Key management API message parser
+ * Copyright (C) 1999, 2000, 2001  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id: pfkey_v2_ext_bits.c,v 1.22 2005-05-11 01:45:31 mcr Exp $
+ */
+
+/*
+ *             Template from klips/net/ipsec/ipsec/ipsec_parse.c.
+ */
+
+char pfkey_v2_ext_bits_c_version[] = "$Id: pfkey_v2_ext_bits.c,v 1.22 2005-05-11 01:45:31 mcr Exp $";
+
+/*
+ * Some ugly stuff to allow consistent debugging code for use in the
+ * kernel and in user space
+*/
+
+#ifdef __KERNEL__
+
+# include <linux/kernel.h>  /* for printk */
+
+# include "openswan/ipsec_kversion.h" /* for malloc switch */
+# ifdef MALLOC_SLAB
+#  include <linux/slab.h> /* kmalloc() */
+# else /* MALLOC_SLAB */
+#  include <linux/malloc.h> /* kmalloc() */
+# endif /* MALLOC_SLAB */
+# include <linux/errno.h>  /* error codes */
+# include <linux/types.h>  /* size_t */
+# include <linux/interrupt.h> /* mark_bh */
+
+# include <linux/netdevice.h>   /* struct device, and other headers */
+# include <linux/etherdevice.h> /* eth_type_trans */
+# include <linux/ip.h>          /* struct iphdr */ 
+# if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+#  include <linux/ipv6.h>
+# endif /* defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) */
+
+#else /* __KERNEL__ */
+
+# include <sys/types.h>
+# include <linux/types.h>
+# include <linux/errno.h>
+#endif
+
+#include <openswan.h>
+#include <pfkeyv2.h>
+#include <pfkey.h>
+
+unsigned int extensions_bitmaps[2/*in/out*/][2/*perm/req*/][SADB_EXTENSIONS_MAX] = {
+
+/* INBOUND EXTENSIONS */
+{
+
+/* PERMITTED IN */
+{
+/* SADB_RESERVED */
+0
+,
+/* SADB_GETSPI */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_EXT_ADDRESS_PROXY
+| 1<<SADB_EXT_SPIRANGE
+,
+/* SADB_UPDATE */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_LIFETIME_CURRENT
+| 1<<SADB_EXT_LIFETIME_HARD
+| 1<<SADB_EXT_LIFETIME_SOFT
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_EXT_ADDRESS_PROXY
+| 1<<SADB_EXT_KEY_AUTH
+| 1<<SADB_EXT_KEY_ENCRYPT
+| 1<<SADB_EXT_IDENTITY_SRC
+| 1<<SADB_EXT_IDENTITY_DST
+| 1<<SADB_EXT_SENSITIVITY
+| 1<<SADB_X_EXT_NAT_T_SPORT
+| 1<<SADB_X_EXT_NAT_T_DPORT
+,
+/* SADB_ADD */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_LIFETIME_HARD
+| 1<<SADB_EXT_LIFETIME_SOFT
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_EXT_ADDRESS_PROXY
+| 1<<SADB_EXT_KEY_AUTH
+| 1<<SADB_EXT_KEY_ENCRYPT
+| 1<<SADB_EXT_IDENTITY_SRC
+| 1<<SADB_EXT_IDENTITY_DST
+| 1<<SADB_EXT_SENSITIVITY
+| 1<<SADB_X_EXT_NAT_T_TYPE
+| 1<<SADB_X_EXT_NAT_T_SPORT
+| 1<<SADB_X_EXT_NAT_T_DPORT
+| 1<<SADB_X_EXT_NAT_T_OA
+,
+/* SADB_DELETE */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+,
+/* SADB_GET */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+,
+/* SADB_ACQUIRE */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_EXT_ADDRESS_PROXY
+| 1<<SADB_EXT_IDENTITY_SRC
+| 1<<SADB_EXT_IDENTITY_DST
+| 1<<SADB_EXT_SENSITIVITY
+| 1<<SADB_EXT_PROPOSAL
+,
+/* SADB_REGISTER */
+1<<SADB_EXT_RESERVED
+,
+/* SADB_EXPIRE */
+0
+,
+/* SADB_FLUSH */
+1<<SADB_EXT_RESERVED
+,
+/* SADB_DUMP */
+1<<SADB_EXT_RESERVED
+,
+/* SADB_X_PROMISC */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_LIFETIME_CURRENT
+| 1<<SADB_EXT_LIFETIME_HARD
+| 1<<SADB_EXT_LIFETIME_SOFT
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_EXT_ADDRESS_PROXY
+| 1<<SADB_EXT_KEY_AUTH
+| 1<<SADB_EXT_KEY_ENCRYPT
+| 1<<SADB_EXT_IDENTITY_SRC
+| 1<<SADB_EXT_IDENTITY_DST
+| 1<<SADB_EXT_SENSITIVITY
+| 1<<SADB_EXT_PROPOSAL
+| 1<<SADB_EXT_SUPPORTED_AUTH
+| 1<<SADB_EXT_SUPPORTED_ENCRYPT
+| 1<<SADB_EXT_SPIRANGE
+| 1<<SADB_X_EXT_KMPRIVATE
+| 1<<SADB_X_EXT_SATYPE2
+| 1<<SADB_X_EXT_SA2
+| 1<<SADB_X_EXT_ADDRESS_DST2
+,
+/* SADB_X_PCHANGE */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_LIFETIME_CURRENT
+| 1<<SADB_EXT_LIFETIME_HARD
+| 1<<SADB_EXT_LIFETIME_SOFT
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_EXT_ADDRESS_PROXY
+| 1<<SADB_EXT_KEY_AUTH
+| 1<<SADB_EXT_KEY_ENCRYPT
+| 1<<SADB_EXT_IDENTITY_SRC
+| 1<<SADB_EXT_IDENTITY_DST
+| 1<<SADB_EXT_SENSITIVITY
+| 1<<SADB_EXT_PROPOSAL
+| 1<<SADB_EXT_SUPPORTED_AUTH
+| 1<<SADB_EXT_SUPPORTED_ENCRYPT
+| 1<<SADB_EXT_SPIRANGE
+| 1<<SADB_X_EXT_KMPRIVATE
+| 1<<SADB_X_EXT_SATYPE2
+| 1<<SADB_X_EXT_SA2
+| 1<<SADB_X_EXT_ADDRESS_DST2
+,
+/* SADB_X_GRPSA */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_X_EXT_SATYPE2
+| 1<<SADB_X_EXT_SA2
+| 1<<SADB_X_EXT_ADDRESS_DST2
+,
+/* SADB_X_ADDFLOW */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_X_EXT_ADDRESS_SRC_FLOW
+| 1<<SADB_X_EXT_ADDRESS_DST_FLOW
+| 1<<SADB_X_EXT_ADDRESS_SRC_MASK
+| 1<<SADB_X_EXT_ADDRESS_DST_MASK
+| 1<<SADB_EXT_IDENTITY_SRC
+| 1<<SADB_EXT_IDENTITY_DST
+| 1<<SADB_X_EXT_PROTOCOL
+,
+/* SADB_X_DELFLOW */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_X_EXT_ADDRESS_SRC_FLOW
+| 1<<SADB_X_EXT_ADDRESS_DST_FLOW
+| 1<<SADB_X_EXT_ADDRESS_SRC_MASK
+| 1<<SADB_X_EXT_ADDRESS_DST_MASK
+| 1<<SADB_EXT_IDENTITY_SRC
+| 1<<SADB_EXT_IDENTITY_DST
+| 1<<SADB_X_EXT_PROTOCOL
+,
+/* SADB_X_DEBUG */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_X_EXT_DEBUG
+,
+/* SADB_X_NAT_T_NEW_MAPPING */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_X_EXT_NAT_T_SPORT
+| 1<<SADB_X_EXT_NAT_T_DPORT
+},
+
+/* REQUIRED IN */
+{
+/* SADB_RESERVED */
+0
+,
+/* SADB_GETSPI */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_EXT_SPIRANGE
+,
+/* SADB_UPDATE */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+/*| 1<<SADB_EXT_KEY_AUTH*/
+/*| 1<<SADB_EXT_KEY_ENCRYPT*/
+,
+/* SADB_ADD */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+/*| 1<<SADB_EXT_KEY_AUTH*/
+/*| 1<<SADB_EXT_KEY_ENCRYPT*/
+,
+/* SADB_DELETE */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+,
+/* SADB_GET */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+,
+/* SADB_ACQUIRE */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_EXT_PROPOSAL
+,
+/* SADB_REGISTER */
+1<<SADB_EXT_RESERVED
+,
+/* SADB_EXPIRE */
+0
+,
+/* SADB_FLUSH */
+1<<SADB_EXT_RESERVED
+,
+/* SADB_DUMP */
+1<<SADB_EXT_RESERVED
+,
+/* SADB_X_PROMISC */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_LIFETIME_CURRENT
+| 1<<SADB_EXT_LIFETIME_HARD
+| 1<<SADB_EXT_LIFETIME_SOFT
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_EXT_ADDRESS_PROXY
+| 1<<SADB_EXT_KEY_AUTH
+| 1<<SADB_EXT_KEY_ENCRYPT
+| 1<<SADB_EXT_IDENTITY_SRC
+| 1<<SADB_EXT_IDENTITY_DST
+| 1<<SADB_EXT_SENSITIVITY
+| 1<<SADB_EXT_PROPOSAL
+| 1<<SADB_EXT_SUPPORTED_AUTH
+| 1<<SADB_EXT_SUPPORTED_ENCRYPT
+| 1<<SADB_EXT_SPIRANGE
+| 1<<SADB_X_EXT_KMPRIVATE
+| 1<<SADB_X_EXT_SATYPE2
+| 1<<SADB_X_EXT_SA2
+| 1<<SADB_X_EXT_ADDRESS_DST2
+,
+/* SADB_X_PCHANGE */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_LIFETIME_CURRENT
+| 1<<SADB_EXT_LIFETIME_HARD
+| 1<<SADB_EXT_LIFETIME_SOFT
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_EXT_ADDRESS_PROXY
+| 1<<SADB_EXT_KEY_AUTH
+| 1<<SADB_EXT_KEY_ENCRYPT
+| 1<<SADB_EXT_IDENTITY_SRC
+| 1<<SADB_EXT_IDENTITY_DST
+| 1<<SADB_EXT_SENSITIVITY
+| 1<<SADB_EXT_PROPOSAL
+| 1<<SADB_EXT_SUPPORTED_AUTH
+| 1<<SADB_EXT_SUPPORTED_ENCRYPT
+| 1<<SADB_EXT_SPIRANGE
+| 1<<SADB_X_EXT_KMPRIVATE
+| 1<<SADB_X_EXT_SATYPE2
+| 1<<SADB_X_EXT_SA2
+| 1<<SADB_X_EXT_ADDRESS_DST2
+,
+/* SADB_X_GRPSA */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_DST
+/*| 1<<SADB_X_EXT_SATYPE2*/
+/*| 1<<SADB_X_EXT_SA2*/
+/*| 1<<SADB_X_EXT_ADDRESS_DST2*/
+,
+/* SADB_X_ADDFLOW */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_X_EXT_ADDRESS_SRC_FLOW
+| 1<<SADB_X_EXT_ADDRESS_DST_FLOW
+| 1<<SADB_X_EXT_ADDRESS_SRC_MASK
+| 1<<SADB_X_EXT_ADDRESS_DST_MASK
+,
+/* SADB_X_DELFLOW */
+1<<SADB_EXT_RESERVED
+/*| 1<<SADB_EXT_SA*/
+#if 0 /* SADB_X_CLREROUTE doesn't need all these... */
+| 1<<SADB_X_EXT_ADDRESS_SRC_FLOW
+| 1<<SADB_X_EXT_ADDRESS_DST_FLOW
+| 1<<SADB_X_EXT_ADDRESS_SRC_MASK
+| 1<<SADB_X_EXT_ADDRESS_DST_MASK
+#endif
+,
+/* SADB_X_DEBUG */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_X_EXT_DEBUG
+,
+/* SADB_X_NAT_T_NEW_MAPPING */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_X_EXT_NAT_T_SPORT
+| 1<<SADB_X_EXT_NAT_T_DPORT
+}
+
+},
+
+/* OUTBOUND EXTENSIONS */
+{
+
+/* PERMITTED OUT */
+{
+/* SADB_RESERVED */
+0
+,
+/* SADB_GETSPI */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+,
+/* SADB_UPDATE */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_LIFETIME_CURRENT
+| 1<<SADB_EXT_LIFETIME_HARD
+| 1<<SADB_EXT_LIFETIME_SOFT
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_EXT_ADDRESS_PROXY
+| 1<<SADB_EXT_IDENTITY_SRC
+| 1<<SADB_EXT_IDENTITY_DST
+| 1<<SADB_EXT_SENSITIVITY
+| 1<<SADB_X_EXT_NAT_T_SPORT
+| 1<<SADB_X_EXT_NAT_T_DPORT
+,
+/* SADB_ADD */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_LIFETIME_HARD
+| 1<<SADB_EXT_LIFETIME_SOFT
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_EXT_IDENTITY_SRC
+| 1<<SADB_EXT_IDENTITY_DST
+| 1<<SADB_EXT_SENSITIVITY
+| 1<<SADB_X_EXT_NAT_T_TYPE
+| 1<<SADB_X_EXT_NAT_T_SPORT
+| 1<<SADB_X_EXT_NAT_T_DPORT
+| 1<<SADB_X_EXT_NAT_T_OA
+,
+/* SADB_DELETE */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+,
+/* SADB_GET */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_LIFETIME_CURRENT
+| 1<<SADB_EXT_LIFETIME_HARD
+| 1<<SADB_EXT_LIFETIME_SOFT
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_EXT_ADDRESS_PROXY
+| 1<<SADB_EXT_KEY_AUTH
+| 1<<SADB_EXT_KEY_ENCRYPT
+| 1<<SADB_EXT_IDENTITY_SRC
+| 1<<SADB_EXT_IDENTITY_DST
+| 1<<SADB_EXT_SENSITIVITY
+| 1<<SADB_X_EXT_NAT_T_TYPE
+| 1<<SADB_X_EXT_NAT_T_SPORT
+| 1<<SADB_X_EXT_NAT_T_DPORT
+| 1<<SADB_X_EXT_NAT_T_OA
+,
+/* SADB_ACQUIRE */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_EXT_ADDRESS_PROXY
+| 1<<SADB_EXT_IDENTITY_SRC
+| 1<<SADB_EXT_IDENTITY_DST
+| 1<<SADB_EXT_SENSITIVITY
+| 1<<SADB_EXT_PROPOSAL
+,
+/* SADB_REGISTER */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SUPPORTED_AUTH
+| 1<<SADB_EXT_SUPPORTED_ENCRYPT
+,
+/* SADB_EXPIRE */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_LIFETIME_CURRENT
+| 1<<SADB_EXT_LIFETIME_HARD
+| 1<<SADB_EXT_LIFETIME_SOFT
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+,
+/* SADB_FLUSH */
+1<<SADB_EXT_RESERVED
+,
+/* SADB_DUMP */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_LIFETIME_CURRENT
+| 1<<SADB_EXT_LIFETIME_HARD
+| 1<<SADB_EXT_LIFETIME_SOFT
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_EXT_ADDRESS_PROXY
+| 1<<SADB_EXT_KEY_AUTH
+| 1<<SADB_EXT_KEY_ENCRYPT
+| 1<<SADB_EXT_IDENTITY_SRC
+| 1<<SADB_EXT_IDENTITY_DST
+| 1<<SADB_EXT_SENSITIVITY
+| 1<<SADB_X_EXT_NAT_T_TYPE
+| 1<<SADB_X_EXT_NAT_T_SPORT
+| 1<<SADB_X_EXT_NAT_T_DPORT
+| 1<<SADB_X_EXT_NAT_T_OA
+,
+/* SADB_X_PROMISC */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_LIFETIME_CURRENT
+| 1<<SADB_EXT_LIFETIME_HARD
+| 1<<SADB_EXT_LIFETIME_SOFT
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_EXT_ADDRESS_PROXY
+| 1<<SADB_EXT_KEY_AUTH
+| 1<<SADB_EXT_KEY_ENCRYPT
+| 1<<SADB_EXT_IDENTITY_SRC
+| 1<<SADB_EXT_IDENTITY_DST
+| 1<<SADB_EXT_SENSITIVITY
+| 1<<SADB_EXT_PROPOSAL
+| 1<<SADB_EXT_SUPPORTED_AUTH
+| 1<<SADB_EXT_SUPPORTED_ENCRYPT
+| 1<<SADB_EXT_SPIRANGE
+| 1<<SADB_X_EXT_KMPRIVATE
+| 1<<SADB_X_EXT_SATYPE2
+| 1<<SADB_X_EXT_SA2
+| 1<<SADB_X_EXT_ADDRESS_DST2
+,
+/* SADB_X_PCHANGE */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_LIFETIME_CURRENT
+| 1<<SADB_EXT_LIFETIME_HARD
+| 1<<SADB_EXT_LIFETIME_SOFT
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_EXT_ADDRESS_PROXY
+| 1<<SADB_EXT_KEY_AUTH
+| 1<<SADB_EXT_KEY_ENCRYPT
+| 1<<SADB_EXT_IDENTITY_SRC
+| 1<<SADB_EXT_IDENTITY_DST
+| 1<<SADB_EXT_SENSITIVITY
+| 1<<SADB_EXT_PROPOSAL
+| 1<<SADB_EXT_SUPPORTED_AUTH
+| 1<<SADB_EXT_SUPPORTED_ENCRYPT
+| 1<<SADB_EXT_SPIRANGE
+| 1<<SADB_X_EXT_KMPRIVATE
+| 1<<SADB_X_EXT_SATYPE2
+| 1<<SADB_X_EXT_SA2
+| 1<<SADB_X_EXT_ADDRESS_DST2
+,
+/* SADB_X_GRPSA */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_X_EXT_SATYPE2
+| 1<<SADB_X_EXT_SA2
+| 1<<SADB_X_EXT_ADDRESS_DST2
+,
+/* SADB_X_ADDFLOW */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_X_EXT_ADDRESS_SRC_FLOW
+| 1<<SADB_X_EXT_ADDRESS_DST_FLOW
+| 1<<SADB_X_EXT_ADDRESS_SRC_MASK
+| 1<<SADB_X_EXT_ADDRESS_DST_MASK
+| 1<<SADB_X_EXT_PROTOCOL
+,
+/* SADB_X_DELFLOW */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_X_EXT_ADDRESS_SRC_FLOW
+| 1<<SADB_X_EXT_ADDRESS_DST_FLOW
+| 1<<SADB_X_EXT_ADDRESS_SRC_MASK
+| 1<<SADB_X_EXT_ADDRESS_DST_MASK
+| 1<<SADB_X_EXT_PROTOCOL
+,
+/* SADB_X_DEBUG */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_X_EXT_DEBUG
+,
+/* SADB_X_NAT_T_NEW_MAPPING */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_X_EXT_NAT_T_SPORT
+| 1<<SADB_X_EXT_NAT_T_DPORT
+},
+
+/* REQUIRED OUT */
+{
+/* SADB_RESERVED */
+0
+,
+/* SADB_GETSPI */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+,
+/* SADB_UPDATE */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+,
+/* SADB_ADD */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+,
+/* SADB_DELETE */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+,
+/* SADB_GET */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+/* | 1<<SADB_EXT_KEY_AUTH */
+/* | 1<<SADB_EXT_KEY_ENCRYPT */
+,
+/* SADB_ACQUIRE */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_EXT_PROPOSAL
+,
+/* SADB_REGISTER */
+1<<SADB_EXT_RESERVED
+/* | 1<<SADB_EXT_SUPPORTED_AUTH
+   | 1<<SADB_EXT_SUPPORTED_ENCRYPT */
+,
+/* SADB_EXPIRE */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_LIFETIME_CURRENT
+/* | 1<<SADB_EXT_LIFETIME_HARD
+   | 1<<SADB_EXT_LIFETIME_SOFT */
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+,
+/* SADB_FLUSH */
+1<<SADB_EXT_RESERVED
+,
+/* SADB_DUMP */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_EXT_KEY_AUTH
+| 1<<SADB_EXT_KEY_ENCRYPT
+,
+/* SADB_X_PROMISC */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_LIFETIME_CURRENT
+| 1<<SADB_EXT_LIFETIME_HARD
+| 1<<SADB_EXT_LIFETIME_SOFT
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_EXT_ADDRESS_PROXY
+| 1<<SADB_EXT_KEY_AUTH
+| 1<<SADB_EXT_KEY_ENCRYPT
+| 1<<SADB_EXT_IDENTITY_SRC
+| 1<<SADB_EXT_IDENTITY_DST
+| 1<<SADB_EXT_SENSITIVITY
+| 1<<SADB_EXT_PROPOSAL
+| 1<<SADB_EXT_SUPPORTED_AUTH
+| 1<<SADB_EXT_SUPPORTED_ENCRYPT
+| 1<<SADB_EXT_SPIRANGE
+| 1<<SADB_X_EXT_KMPRIVATE
+| 1<<SADB_X_EXT_SATYPE2
+| 1<<SADB_X_EXT_SA2
+| 1<<SADB_X_EXT_ADDRESS_DST2
+,
+/* SADB_X_PCHANGE */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_LIFETIME_CURRENT
+| 1<<SADB_EXT_LIFETIME_HARD
+| 1<<SADB_EXT_LIFETIME_SOFT
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_EXT_ADDRESS_PROXY
+| 1<<SADB_EXT_KEY_AUTH
+| 1<<SADB_EXT_KEY_ENCRYPT
+| 1<<SADB_EXT_IDENTITY_SRC
+| 1<<SADB_EXT_IDENTITY_DST
+| 1<<SADB_EXT_SENSITIVITY
+| 1<<SADB_EXT_PROPOSAL
+| 1<<SADB_EXT_SUPPORTED_AUTH
+| 1<<SADB_EXT_SUPPORTED_ENCRYPT
+| 1<<SADB_EXT_SPIRANGE
+| 1<<SADB_X_EXT_KMPRIVATE
+| 1<<SADB_X_EXT_SATYPE2
+| 1<<SADB_X_EXT_SA2
+| 1<<SADB_X_EXT_ADDRESS_DST2
+,
+/* SADB_X_GRPSA */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_DST
+,
+/* SADB_X_ADDFLOW */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_X_EXT_ADDRESS_SRC_FLOW
+| 1<<SADB_X_EXT_ADDRESS_DST_FLOW
+| 1<<SADB_X_EXT_ADDRESS_SRC_MASK
+| 1<<SADB_X_EXT_ADDRESS_DST_MASK
+,
+/* SADB_X_DELFLOW */
+1<<SADB_EXT_RESERVED
+/*| 1<<SADB_EXT_SA*/
+| 1<<SADB_X_EXT_ADDRESS_SRC_FLOW
+| 1<<SADB_X_EXT_ADDRESS_DST_FLOW
+| 1<<SADB_X_EXT_ADDRESS_SRC_MASK
+| 1<<SADB_X_EXT_ADDRESS_DST_MASK
+,
+/* SADB_X_DEBUG */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_X_EXT_DEBUG
+,
+/* SADB_X_NAT_T_NEW_MAPPING */
+1<<SADB_EXT_RESERVED
+| 1<<SADB_EXT_SA
+| 1<<SADB_EXT_ADDRESS_SRC
+| 1<<SADB_EXT_ADDRESS_DST
+| 1<<SADB_X_EXT_NAT_T_SPORT
+| 1<<SADB_X_EXT_NAT_T_DPORT
+}
+}
+};
+
+/*
+ * $Log: pfkey_v2_ext_bits.c,v $
+ * Revision 1.22  2005-05-11 01:45:31  mcr
+ *     make pfkey.h standalone.
+ *
+ * Revision 1.21  2004/07/10 07:48:36  mcr
+ * Moved from linux/lib/libfreeswan/pfkey_v2_ext_bits.c,v
+ *
+ * Revision 1.20  2004/03/08 01:59:08  ken
+ * freeswan.h -> openswan.h
+ *
+ * Revision 1.19  2003/12/22 21:38:13  mcr
+ *     removed extraenous #endif.
+ *
+ * Revision 1.18  2003/12/22 19:34:41  mcr
+ *     added 0.6c NAT-T patch.
+ *
+ * Revision 1.17  2003/12/10 01:20:19  mcr
+ *     NAT-traversal patches to KLIPS.
+ *
+ * Revision 1.16  2003/10/31 02:27:12  mcr
+ *     pulled up port-selector patches and sa_id elimination.
+ *
+ * Revision 1.15.30.1  2003/09/21 13:59:44  mcr
+ *     pre-liminary X.509 patch - does not yet pass tests.
+ *
+ * Revision 1.15  2002/04/24 07:55:32  mcr
+ *     #include patches and Makefiles for post-reorg compilation.
+ *
+ * Revision 1.14  2002/04/24 07:36:40  mcr
+ * Moved from ./lib/pfkey_v2_ext_bits.c,v
+ *
+ * Revision 1.13  2002/01/29 22:25:36  rgb
+ * Re-add ipsec_kversion.h to keep MALLOC happy.
+ *
+ * Revision 1.12  2002/01/29 01:59:10  mcr
+ *     removal of kversions.h - sources that needed it now use ipsec_param.h.
+ *     updating of IPv6 structures to match latest in6.h version.
+ *     removed dead code from openswan.h that also duplicated kversions.h
+ *     code.
+ *
+ * Revision 1.11  2001/10/18 04:45:24  rgb
+ * 2.4.9 kernel deprecates linux/malloc.h in favour of linux/slab.h,
+ * lib/openswan.h version macros moved to lib/kversions.h.
+ * Other compiler directive cleanups.
+ *
+ * Revision 1.10  2001/09/08 21:13:35  rgb
+ * Added pfkey ident extension support for ISAKMPd. (NetCelo)
+ *
+ * Revision 1.9  2001/06/14 19:35:16  rgb
+ * Update copyright date.
+ *
+ * Revision 1.8  2001/03/26 23:07:36  rgb
+ * Remove requirement for auth and enc key from UPDATE.
+ *
+ * Revision 1.7  2000/09/12 22:35:37  rgb
+ * Restructured to remove unused extensions from CLEARFLOW messages.
+ *
+ * Revision 1.6  2000/09/09 06:39:01  rgb
+ * Added comments for clarity.
+ *
+ * Revision 1.5  2000/06/02 22:54:14  rgb
+ * Added Gerhard Gessler's struct sockaddr_storage mods for IPv6 support.
+ *
+ * Revision 1.4  2000/01/21 06:27:56  rgb
+ * Added address cases for eroute flows.
+ * Added comments for each message type.
+ * Added klipsdebug switching capability.
+ * Fixed GRPSA bitfields.
+ *
+ * Revision 1.3  1999/12/01 22:20:27  rgb
+ * Remove requirement for a proxy address in an incoming getspi message.
+ *
+ * Revision 1.2  1999/11/27 11:57:06  rgb
+ * Consolidated the 4 1-d extension bitmap arrays into one 4-d array.
+ * Add CVS log entry to bottom of file.
+ * Cleaned out unused bits.
+ *
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/pfkey_v2_ext_process.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,971 @@
+/*
+ * @(#) RFC2367 PF_KEYv2 Key management API message parser
+ * Copyright (C) 1998-2003   Richard Guy Briggs.
+ * Copyright (C) 2004        Michael Richardson <mcr@xelerance.com>
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id: pfkey_v2_ext_process.c,v 1.20.2.4 2007-11-16 03:42:22 paul Exp $
+ */
+
+/*
+ *             Template from klips/net/ipsec/ipsec/ipsec_netlink.c.
+ */
+
+char pfkey_v2_ext_process_c_version[] = "$Id: pfkey_v2_ext_process.c,v 1.20.2.4 2007-11-16 03:42:22 paul Exp $";
+
+#ifndef AUTOCONF_INCLUDED
+#include <linux/config.h>
+#endif
+#include <linux/version.h>
+#include <linux/kernel.h> /* printk() */
+
+#include "openswan/ipsec_param.h"
+
+#ifdef MALLOC_SLAB
+# include <linux/slab.h> /* kmalloc() */
+#else /* MALLOC_SLAB */
+# include <linux/malloc.h> /* kmalloc() */
+#endif /* MALLOC_SLAB */
+#include <linux/errno.h>  /* error codes */
+#include <linux/types.h>  /* size_t */
+#include <linux/interrupt.h> /* mark_bh */
+
+#include <linux/netdevice.h>   /* struct device, and other headers */
+#include <linux/etherdevice.h> /* eth_type_trans */
+#include <linux/ip.h>          /* struct iphdr */
+#include <linux/skbuff.h>
+
+#include <openswan.h>
+
+#include <crypto/des.h>
+
+#ifdef SPINLOCK
+# ifdef SPINLOCK_23
+#  include <linux/spinlock.h> /* *lock* */
+# else /* SPINLOCK_23 */
+#  include <asm/spinlock.h> /* *lock* */
+# endif /* SPINLOCK_23 */
+#endif /* SPINLOCK */
+#ifdef NET_21
+# include <linux/in6.h>
+# define ip_chk_addr inet_addr_type
+# define IS_MYADDR RTN_LOCAL
+#endif
+
+#include <net/ip.h>
+#ifdef NETLINK_SOCK
+# include <linux/netlink.h>
+#else
+# include <net/netlink.h>
+#endif
+
+#include <linux/random.h>      /* get_random_bytes() */
+
+#include "openswan/radij.h"
+#include "openswan/ipsec_encap.h"
+#include "openswan/ipsec_sa.h"
+
+#include "openswan/ipsec_radij.h"
+#include "openswan/ipsec_xform.h"
+#include "openswan/ipsec_ah.h"
+#include "openswan/ipsec_esp.h"
+#include "openswan/ipsec_tunnel.h"
+#include "openswan/ipsec_rcv.h"
+#include "openswan/ipcomp.h"
+
+#include <pfkeyv2.h>
+#include <pfkey.h>
+
+#include "openswan/ipsec_proto.h"
+#include "openswan/ipsec_alg.h"
+
+#define SENDERR(_x) do { error = -(_x); goto errlab; } while (0)
+
+int
+pfkey_sa_process(struct sadb_ext *pfkey_ext, struct pfkey_extracted_data* extr)
+{
+       struct sadb_sa *pfkey_sa = (struct sadb_sa *)pfkey_ext;
+       int error = 0;
+       struct ipsec_sa* ipsp;
+       
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_sa_process: .\n");
+
+       if(!extr || !extr->ips) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_sa_process: "
+                           "extr or extr->ips is NULL, fatal\n");
+               SENDERR(EINVAL);
+       }
+
+       switch(pfkey_ext->sadb_ext_type) {
+       case SADB_EXT_SA:
+               ipsp = extr->ips;
+               break;
+       case SADB_X_EXT_SA2:
+               if(extr->ips2 == NULL) {
+                       extr->ips2 = ipsec_sa_alloc(&error); /* pass error var by pointer */
+               }
+               if(extr->ips2 == NULL) {
+                       SENDERR(-error);
+               }
+               ipsp = extr->ips2;
+               break;
+       default:
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_sa_process: "
+                           "invalid exttype=%d.\n",
+                           pfkey_ext->sadb_ext_type);
+               SENDERR(EINVAL);
+       }
+
+       ipsp->ips_said.spi = pfkey_sa->sadb_sa_spi;
+       ipsp->ips_replaywin = pfkey_sa->sadb_sa_replay;
+       ipsp->ips_state = pfkey_sa->sadb_sa_state;
+       ipsp->ips_flags = pfkey_sa->sadb_sa_flags;
+       ipsp->ips_replaywin_lastseq = ipsp->ips_replaywin_bitmap = 0;
+       ipsp->ips_ref_rel = pfkey_sa->sadb_x_sa_ref;
+       
+       switch(ipsp->ips_said.proto) {
+       case IPPROTO_AH:
+               ipsp->ips_authalg = pfkey_sa->sadb_sa_auth;
+               ipsp->ips_encalg = SADB_EALG_NONE;
+               break;
+       case IPPROTO_ESP:
+               ipsp->ips_authalg = pfkey_sa->sadb_sa_auth;
+               ipsp->ips_encalg = pfkey_sa->sadb_sa_encrypt;
+#ifdef CONFIG_KLIPS_ALG
+               ipsec_alg_sa_init(ipsp);
+#endif
+               break;
+       case IPPROTO_IPIP:
+               ipsp->ips_authalg = AH_NONE;
+               ipsp->ips_encalg = ESP_NONE;
+               break;
+#ifdef CONFIG_KLIPS_IPCOMP
+       case IPPROTO_COMP:
+               ipsp->ips_authalg = AH_NONE;
+               ipsp->ips_encalg = pfkey_sa->sadb_sa_encrypt;
+               break;
+#endif /* CONFIG_KLIPS_IPCOMP */
+       case IPPROTO_INT:
+               ipsp->ips_authalg = AH_NONE;
+               ipsp->ips_encalg = ESP_NONE;
+               break;
+       case 0:
+               break;
+       default:
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_sa_process: "
+                           "unknown proto=%d.\n",
+                           ipsp->ips_said.proto);
+               SENDERR(EINVAL);
+       }
+
+errlab:
+       return error;
+}
+
+int
+pfkey_lifetime_process(struct sadb_ext *pfkey_ext, struct pfkey_extracted_data* extr)
+{
+       int error = 0;
+       struct sadb_lifetime *pfkey_lifetime = (struct sadb_lifetime *)pfkey_ext;
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_lifetime_process: .\n");
+
+       if(!extr || !extr->ips) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_lifetime_process: "
+                           "extr or extr->ips is NULL, fatal\n");
+               SENDERR(EINVAL);
+       }
+
+       switch(pfkey_lifetime->sadb_lifetime_exttype) {
+       case SADB_EXT_LIFETIME_CURRENT:
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_lifetime_process: "
+                           "lifetime_current not supported yet.\n");
+               SENDERR(EINVAL);
+               break;
+       case SADB_EXT_LIFETIME_HARD:
+               ipsec_lifetime_update_hard(&extr->ips->ips_life.ipl_allocations,
+                                         pfkey_lifetime->sadb_lifetime_allocations);
+
+               ipsec_lifetime_update_hard(&extr->ips->ips_life.ipl_bytes,
+                                         pfkey_lifetime->sadb_lifetime_bytes);
+
+               ipsec_lifetime_update_hard(&extr->ips->ips_life.ipl_addtime,
+                                         pfkey_lifetime->sadb_lifetime_addtime);
+
+               ipsec_lifetime_update_hard(&extr->ips->ips_life.ipl_usetime,
+                                         pfkey_lifetime->sadb_lifetime_usetime);
+
+               break;
+
+       case SADB_EXT_LIFETIME_SOFT:
+               ipsec_lifetime_update_soft(&extr->ips->ips_life.ipl_allocations,
+                                          pfkey_lifetime->sadb_lifetime_allocations);
+
+               ipsec_lifetime_update_soft(&extr->ips->ips_life.ipl_bytes,
+                                          pfkey_lifetime->sadb_lifetime_bytes);
+
+               ipsec_lifetime_update_soft(&extr->ips->ips_life.ipl_addtime,
+                                          pfkey_lifetime->sadb_lifetime_addtime);
+
+               ipsec_lifetime_update_soft(&extr->ips->ips_life.ipl_usetime,
+                                          pfkey_lifetime->sadb_lifetime_usetime);
+
+               break;
+       default:
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_lifetime_process: "
+                           "invalid exttype=%d.\n",
+                           pfkey_ext->sadb_ext_type);
+               SENDERR(EINVAL);
+       }
+
+errlab:
+       return error;
+}
+
+int
+pfkey_address_process(struct sadb_ext *pfkey_ext, struct pfkey_extracted_data* extr)
+{
+       int error = 0;
+       int saddr_len = 0;
+       char ipaddr_txt[ADDRTOA_BUF];
+       unsigned char **sap;
+       unsigned short * portp = 0;
+       struct sadb_address *pfkey_address = (struct sadb_address *)pfkey_ext;
+       struct sockaddr* s = (struct sockaddr*)((char*)pfkey_address + sizeof(*pfkey_address));
+       struct ipsec_sa* ipsp;
+       
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_address_process:\n");
+       
+       if(!extr || !extr->ips) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_address_process: "
+                           "extr or extr->ips is NULL, fatal\n");
+               SENDERR(EINVAL);
+       }
+
+       switch(s->sa_family) {
+       case AF_INET:
+               saddr_len = sizeof(struct sockaddr_in);
+               if (debug_pfkey)
+                       addrtoa(((struct sockaddr_in*)s)->sin_addr, 0, ipaddr_txt, sizeof(ipaddr_txt));
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_address_process: "
+                           "found address family=%d, AF_INET, %s.\n",
+                           s->sa_family,
+                           ipaddr_txt);
+               break;
+#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+       case AF_INET6:
+               saddr_len = sizeof(struct sockaddr_in6);
+               break;
+#endif /* defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) */
+       default:
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_address_process: "
+                           "s->sa_family=%d not supported.\n",
+                           s->sa_family);
+               SENDERR(EPFNOSUPPORT);
+       }
+       
+       switch(pfkey_address->sadb_address_exttype) {
+       case SADB_EXT_ADDRESS_SRC:
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_address_process: "
+                           "found src address.\n");
+               sap = (unsigned char **)&(extr->ips->ips_addr_s);
+               extr->ips->ips_addr_s_size = saddr_len;
+               break;
+       case SADB_EXT_ADDRESS_DST:
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_address_process: "
+                           "found dst address.\n");
+               sap = (unsigned char **)&(extr->ips->ips_addr_d);
+               extr->ips->ips_addr_d_size = saddr_len;
+               break;
+       case SADB_EXT_ADDRESS_PROXY:
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_address_process: "
+                           "found proxy address.\n");
+               sap = (unsigned char **)&(extr->ips->ips_addr_p);
+               extr->ips->ips_addr_p_size = saddr_len;
+               break;
+       case SADB_X_EXT_ADDRESS_DST2:
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_address_process: "
+                           "found 2nd dst address.\n");
+               if(extr->ips2 == NULL) {
+                       extr->ips2 = ipsec_sa_alloc(&error); /* pass error var by pointer */
+               }
+               if(extr->ips2 == NULL) {
+                       SENDERR(-error);
+               }
+               sap = (unsigned char **)&(extr->ips2->ips_addr_d);
+               extr->ips2->ips_addr_d_size = saddr_len;
+               break;
+       case SADB_X_EXT_ADDRESS_SRC_FLOW:
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_address_process: "
+                           "found src flow address.\n");
+               if(pfkey_alloc_eroute(&(extr->eroute)) == ENOMEM) {
+                       SENDERR(ENOMEM);
+               }
+               sap = (unsigned char **)&(extr->eroute->er_eaddr.sen_ip_src);
+               portp = &(extr->eroute->er_eaddr.sen_sport);
+               break;
+       case SADB_X_EXT_ADDRESS_DST_FLOW:
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_address_process: "
+                           "found dst flow address.\n");
+               if(pfkey_alloc_eroute(&(extr->eroute)) == ENOMEM) {
+                       SENDERR(ENOMEM);
+               }
+               sap = (unsigned char **)&(extr->eroute->er_eaddr.sen_ip_dst);
+               portp = &(extr->eroute->er_eaddr.sen_dport);
+               break;
+       case SADB_X_EXT_ADDRESS_SRC_MASK:
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_address_process: "
+                           "found src mask address.\n");
+               if(pfkey_alloc_eroute(&(extr->eroute)) == ENOMEM) {
+                       SENDERR(ENOMEM);
+               }
+               sap = (unsigned char **)&(extr->eroute->er_emask.sen_ip_src);
+               portp = &(extr->eroute->er_emask.sen_sport);
+               break;
+       case SADB_X_EXT_ADDRESS_DST_MASK:
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_address_process: "
+                           "found dst mask address.\n");
+               if(pfkey_alloc_eroute(&(extr->eroute)) == ENOMEM) {
+                       SENDERR(ENOMEM);
+               }
+               sap = (unsigned char **)&(extr->eroute->er_emask.sen_ip_dst);
+               portp = &(extr->eroute->er_emask.sen_dport);
+               break;
+#ifdef NAT_TRAVERSAL
+       case SADB_X_EXT_NAT_T_OA:
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_address_process: "
+                           "found NAT-OA address.\n");
+               sap = (unsigned char **)&(extr->ips->ips_natt_oa);
+               extr->ips->ips_natt_oa_size = saddr_len;
+               break;
+#endif
+       default:
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_address_process: "
+                           "unrecognised ext_type=%d.\n",
+                           pfkey_address->sadb_address_exttype);
+               SENDERR(EINVAL);
+       }
+       
+       switch(pfkey_address->sadb_address_exttype) {
+       case SADB_EXT_ADDRESS_SRC:
+       case SADB_EXT_ADDRESS_DST:
+       case SADB_EXT_ADDRESS_PROXY:
+       case SADB_X_EXT_ADDRESS_DST2:
+#ifdef NAT_TRAVERSAL
+       case SADB_X_EXT_NAT_T_OA:
+#endif
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_address_process: "
+                           "allocating %d bytes for saddr.\n",
+                           saddr_len);
+               if(!(*sap = kmalloc(saddr_len, GFP_KERNEL))) {
+                       SENDERR(ENOMEM);
+               }
+               memcpy(*sap, s, saddr_len);
+               break;
+       default:
+               if(s->sa_family != AF_INET) {
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_address_process: "
+                                   "s->sa_family=%d not supported.\n",
+                                   s->sa_family);
+                       SENDERR(EPFNOSUPPORT);
+               }
+               {
+                       *(struct in_addr *)sap = ((struct sockaddr_in *)s)->sin_addr;
+               }
+
+               if (portp != 0)
+                       *portp = ((struct sockaddr_in*)s)->sin_port;
+#ifdef CONFIG_KLIPS_DEBUG
+               if(extr->eroute) {
+                       char buf1[64], buf2[64];
+                       if (debug_pfkey) {
+                               subnettoa(extr->eroute->er_eaddr.sen_ip_src,
+                                         extr->eroute->er_emask.sen_ip_src, 0, buf1, sizeof(buf1));
+                               subnettoa(extr->eroute->er_eaddr.sen_ip_dst,
+                                         extr->eroute->er_emask.sen_ip_dst, 0, buf2, sizeof(buf2));
+                               KLIPS_PRINT(debug_pfkey,
+                                           "klips_debug:pfkey_address_parse: "
+                                           "extr->eroute set to %s:%d->%s:%d\n",
+                                           buf1,
+                                           ntohs(extr->eroute->er_eaddr.sen_sport),
+                                           buf2,
+                                           ntohs(extr->eroute->er_eaddr.sen_dport));
+                       }
+               }
+#endif /* CONFIG_KLIPS_DEBUG */
+       }
+
+       ipsp = extr->ips;
+       switch(pfkey_address->sadb_address_exttype) {
+       case SADB_X_EXT_ADDRESS_DST2:
+               ipsp = extr->ips2;
+       case SADB_EXT_ADDRESS_DST:
+               if(s->sa_family == AF_INET) {
+                       ipsp->ips_said.dst.u.v4.sin_addr.s_addr = ((struct sockaddr_in*)(ipsp->ips_addr_d))->sin_addr.s_addr;
+                       ipsp->ips_said.dst.u.v4.sin_family      = AF_INET;
+                       if (debug_pfkey)
+                               addrtoa(((struct sockaddr_in*)(ipsp->ips_addr_d))->sin_addr,
+                               0,
+                               ipaddr_txt,
+                               sizeof(ipaddr_txt));
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_address_process: "
+                                   "ips_said.dst set to %s.\n",
+                                   ipaddr_txt);
+               } else {
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_address_process: "
+                                   "uh, ips_said.dst doesn't do address family=%d yet, said will be invalid.\n",
+                                   s->sa_family);
+               }
+       default:
+               break;
+       }
+       
+       /* XXX check if port!=0 */
+       
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_address_process: successful.\n");
+ errlab:
+       return error;
+}
+
+int
+pfkey_key_process(struct sadb_ext *pfkey_ext, struct pfkey_extracted_data* extr)
+{
+        int error = 0;
+        struct sadb_key *pfkey_key = (struct sadb_key *)pfkey_ext;
+       
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_key_process: .\n");
+
+       if(!extr || !extr->ips) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_key_process: "
+                           "extr or extr->ips is NULL, fatal\n");
+               SENDERR(EINVAL);
+       }
+
+        switch(pfkey_key->sadb_key_exttype) {
+        case SADB_EXT_KEY_AUTH:
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_key_process: "
+                           "allocating %d bytes for authkey.\n",
+                           DIVUP(pfkey_key->sadb_key_bits, 8));
+               if(!(extr->ips->ips_key_a = kmalloc(DIVUP(pfkey_key->sadb_key_bits, 8), GFP_KERNEL))) {
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_key_process: "
+                                   "memory allocation error.\n");
+                       SENDERR(ENOMEM);
+               }
+                extr->ips->ips_key_bits_a = pfkey_key->sadb_key_bits;
+                extr->ips->ips_key_a_size = DIVUP(pfkey_key->sadb_key_bits, 8);
+               memcpy(extr->ips->ips_key_a,
+                      (char*)pfkey_key + sizeof(struct sadb_key),
+                      extr->ips->ips_key_a_size);
+               break;
+       case SADB_EXT_KEY_ENCRYPT: /* Key(s) */
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_key_process: "
+                           "allocating %d bytes for enckey.\n",
+                           DIVUP(pfkey_key->sadb_key_bits, 8));
+               if(!(extr->ips->ips_key_e = kmalloc(DIVUP(pfkey_key->sadb_key_bits, 8), GFP_KERNEL))) {
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_key_process: "
+                                   "memory allocation error.\n");
+                       SENDERR(ENOMEM);
+               }
+               extr->ips->ips_key_bits_e = pfkey_key->sadb_key_bits;
+               extr->ips->ips_key_e_size = DIVUP(pfkey_key->sadb_key_bits, 8);
+               memcpy(extr->ips->ips_key_e,
+                      (char*)pfkey_key + sizeof(struct sadb_key),
+                      extr->ips->ips_key_e_size);
+               break;
+       default:
+               SENDERR(EINVAL);
+       }
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_key_process: "
+                   "success.\n");
+errlab:
+       return error;
+}
+
+int
+pfkey_ident_process(struct sadb_ext *pfkey_ext, struct pfkey_extracted_data* extr)
+{
+        int error = 0;
+        struct sadb_ident *pfkey_ident = (struct sadb_ident *)pfkey_ext;
+       int data_len;
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_ident_process: .\n");
+
+       if(!extr || !extr->ips) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_ident_process: "
+                           "extr or extr->ips is NULL, fatal\n");
+               SENDERR(EINVAL);
+       }
+
+       switch(pfkey_ident->sadb_ident_exttype) {
+       case SADB_EXT_IDENTITY_SRC:
+               data_len = pfkey_ident->sadb_ident_len * IPSEC_PFKEYv2_ALIGN - sizeof(struct sadb_ident);
+               
+               extr->ips->ips_ident_s.type = pfkey_ident->sadb_ident_type;
+               extr->ips->ips_ident_s.id = pfkey_ident->sadb_ident_id;
+               extr->ips->ips_ident_s.len = pfkey_ident->sadb_ident_len;
+               if(data_len) {
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_ident_process: "
+                                   "allocating %d bytes for ident_s.\n",
+                                   data_len);
+                       if(!(extr->ips->ips_ident_s.data
+                            = kmalloc(data_len, GFP_KERNEL))) {
+                                SENDERR(ENOMEM);
+                        }
+                       memcpy(extr->ips->ips_ident_s.data,
+                               (char*)pfkey_ident + sizeof(struct sadb_ident),
+                              data_len);
+                } else {
+                       extr->ips->ips_ident_s.data = NULL;
+                }
+                break;
+       case SADB_EXT_IDENTITY_DST: /* Identity(ies) */
+               data_len = pfkey_ident->sadb_ident_len * IPSEC_PFKEYv2_ALIGN - sizeof(struct sadb_ident);
+               
+               extr->ips->ips_ident_d.type = pfkey_ident->sadb_ident_type;
+               extr->ips->ips_ident_d.id = pfkey_ident->sadb_ident_id;
+               extr->ips->ips_ident_d.len = pfkey_ident->sadb_ident_len;
+               if(data_len) {
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_ident_process: "
+                                   "allocating %d bytes for ident_d.\n",
+                                   data_len);
+                       if(!(extr->ips->ips_ident_d.data
+                            = kmalloc(data_len, GFP_KERNEL))) {
+                                SENDERR(ENOMEM);
+                        }
+                       memcpy(extr->ips->ips_ident_d.data,
+                               (char*)pfkey_ident + sizeof(struct sadb_ident),
+                              data_len);
+                } else {
+                       extr->ips->ips_ident_d.data = NULL;
+                }
+                break;
+       default:
+               SENDERR(EINVAL);
+       }
+errlab:
+       return error;
+}
+
+int
+pfkey_sens_process(struct sadb_ext *pfkey_ext, struct pfkey_extracted_data* extr)
+{
+        int error = 0;
+       
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_sens_process: "
+                   "Sorry, I can't process exttype=%d yet.\n",
+                   pfkey_ext->sadb_ext_type);
+        SENDERR(EINVAL); /* don't process these yet */
+ errlab:
+        return error;
+}
+
+int
+pfkey_prop_process(struct sadb_ext *pfkey_ext, struct pfkey_extracted_data* extr)
+{
+        int error = 0;
+       
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_prop_process: "
+                   "Sorry, I can't process exttype=%d yet.\n",
+                   pfkey_ext->sadb_ext_type);
+       SENDERR(EINVAL); /* don't process these yet */
+       
+ errlab:
+       return error;
+}
+
+int
+pfkey_supported_process(struct sadb_ext *pfkey_ext, struct pfkey_extracted_data* extr)
+{
+        int error = 0;
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_supported_process: "
+                   "Sorry, I can't process exttype=%d yet.\n",
+                   pfkey_ext->sadb_ext_type);
+       SENDERR(EINVAL); /* don't process these yet */
+
+errlab:
+       return error;
+}
+
+int
+pfkey_spirange_process(struct sadb_ext *pfkey_ext, struct pfkey_extracted_data* extr)
+{
+        int error = 0;
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_spirange_process: .\n");
+/* errlab: */
+       return error;
+}
+
+int
+pfkey_x_kmprivate_process(struct sadb_ext *pfkey_ext, struct pfkey_extracted_data* extr)
+{
+       int error = 0;
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_x_kmprivate_process: "
+                   "Sorry, I can't process exttype=%d yet.\n",
+                   pfkey_ext->sadb_ext_type);
+       SENDERR(EINVAL); /* don't process these yet */
+
+errlab:
+       return error;
+}
+
+int
+pfkey_x_satype_process(struct sadb_ext *pfkey_ext, struct pfkey_extracted_data* extr)
+{
+       int error = 0;
+       struct sadb_x_satype *pfkey_x_satype = (struct sadb_x_satype *)pfkey_ext;
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_x_satype_process: .\n");
+
+       if(!extr || !extr->ips) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_x_satype_process: "
+                           "extr or extr->ips is NULL, fatal\n");
+               SENDERR(EINVAL);
+       }
+
+       if(extr->ips2 == NULL) {
+               extr->ips2 = ipsec_sa_alloc(&error); /* pass error var by pointer */
+       }
+       if(extr->ips2 == NULL) {
+               SENDERR(-error);
+       }
+       if(!(extr->ips2->ips_said.proto = satype2proto(pfkey_x_satype->sadb_x_satype_satype))) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_x_satype_process: "
+                           "proto lookup from satype=%d failed.\n",
+                           pfkey_x_satype->sadb_x_satype_satype);
+               SENDERR(EINVAL);
+       }
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_x_satype_process: "
+                   "protocol==%d decoded from satype==%d(%s).\n",
+                   extr->ips2->ips_said.proto,
+                   pfkey_x_satype->sadb_x_satype_satype,
+                   satype2name(pfkey_x_satype->sadb_x_satype_satype));
+
+errlab:
+       return error;
+}
+
+
+#ifdef CONFIG_IPSEC_NAT_TRAVERSAL
+int
+pfkey_x_nat_t_type_process(struct sadb_ext *pfkey_ext, struct pfkey_extracted_data* extr)
+{
+       int error = 0;
+       struct sadb_x_nat_t_type *pfkey_x_nat_t_type = (struct sadb_x_nat_t_type *)pfkey_ext;
+
+       if(!pfkey_x_nat_t_type) {
+               printk("klips_debug:pfkey_x_nat_t_type_process: "
+                      "null pointer passed in\n");
+               SENDERR(EINVAL);
+       }
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_x_nat_t_type_process: %d.\n",
+                       pfkey_x_nat_t_type->sadb_x_nat_t_type_type);
+
+       if(!extr || !extr->ips) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_nat_t_type_process: "
+                           "extr or extr->ips is NULL, fatal\n");
+               SENDERR(EINVAL);
+       }
+
+       switch(pfkey_x_nat_t_type->sadb_x_nat_t_type_type) {
+               case ESPINUDP_WITH_NON_IKE: /* with Non-IKE (older version) */
+               case ESPINUDP_WITH_NON_ESP: /* with Non-ESP */
+
+                       extr->ips->ips_natt_type = pfkey_x_nat_t_type->sadb_x_nat_t_type_type;
+                       break;
+               default:
+                       KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_x_nat_t_type_process: "
+                           "unknown type %d.\n",
+                           pfkey_x_nat_t_type->sadb_x_nat_t_type_type);
+                       SENDERR(EINVAL);
+                       break;
+       }
+
+errlab:
+       return error;
+}
+
+int
+pfkey_x_nat_t_port_process(struct sadb_ext *pfkey_ext, struct pfkey_extracted_data* extr)
+{
+       int error = 0;
+       struct sadb_x_nat_t_port *pfkey_x_nat_t_port = (struct sadb_x_nat_t_port *)pfkey_ext;
+
+       if(!pfkey_x_nat_t_port) {
+               printk("klips_debug:pfkey_x_nat_t_port_process: "
+                      "null pointer passed in\n");
+               SENDERR(EINVAL);
+       }
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_x_nat_t_port_process: %d/%d.\n",
+                       pfkey_x_nat_t_port->sadb_x_nat_t_port_exttype,
+                       pfkey_x_nat_t_port->sadb_x_nat_t_port_port);
+
+       if(!extr || !extr->ips) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_nat_t_type_process: "
+                           "extr or extr->ips is NULL, fatal\n");
+               SENDERR(EINVAL);
+       }
+
+       switch(pfkey_x_nat_t_port->sadb_x_nat_t_port_exttype) {
+               case SADB_X_EXT_NAT_T_SPORT:
+                       extr->ips->ips_natt_sport = pfkey_x_nat_t_port->sadb_x_nat_t_port_port;
+                       break;
+               case SADB_X_EXT_NAT_T_DPORT:
+                       extr->ips->ips_natt_dport = pfkey_x_nat_t_port->sadb_x_nat_t_port_port;
+                       break;
+               default:
+                       KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_x_nat_t_port_process: "
+                           "unknown exttype %d.\n",
+                           pfkey_x_nat_t_port->sadb_x_nat_t_port_exttype);
+                       SENDERR(EINVAL);
+                       break;
+       }
+
+errlab:
+       return error;
+}
+#endif
+
+int
+pfkey_x_debug_process(struct sadb_ext *pfkey_ext, struct pfkey_extracted_data* extr)
+{
+       int error = 0;
+       struct sadb_x_debug *pfkey_x_debug = (struct sadb_x_debug *)pfkey_ext;
+
+       if(!pfkey_x_debug) {
+               printk("klips_debug:pfkey_x_debug_process: "
+                      "null pointer passed in\n");
+               SENDERR(EINVAL);
+       }
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_x_debug_process: .\n");
+
+#ifdef CONFIG_KLIPS_DEBUG
+               if(pfkey_x_debug->sadb_x_debug_netlink >>
+                  (sizeof(pfkey_x_debug->sadb_x_debug_netlink) * 8 - 1)) {
+                       pfkey_x_debug->sadb_x_debug_netlink &=
+                               ~(1 << (sizeof(pfkey_x_debug->sadb_x_debug_netlink) * 8 -1));
+                       debug_tunnel  |= pfkey_x_debug->sadb_x_debug_tunnel;
+                       debug_netlink |= pfkey_x_debug->sadb_x_debug_netlink;
+                       debug_xform   |= pfkey_x_debug->sadb_x_debug_xform;
+                       debug_eroute  |= pfkey_x_debug->sadb_x_debug_eroute;
+                       debug_spi     |= pfkey_x_debug->sadb_x_debug_spi;
+                       debug_radij   |= pfkey_x_debug->sadb_x_debug_radij;
+                       debug_esp     |= pfkey_x_debug->sadb_x_debug_esp;
+                       debug_ah      |= pfkey_x_debug->sadb_x_debug_ah;
+                       debug_rcv     |= pfkey_x_debug->sadb_x_debug_rcv;
+                       debug_pfkey   |= pfkey_x_debug->sadb_x_debug_pfkey;
+#ifdef CONFIG_KLIPS_IPCOMP
+                       sysctl_ipsec_debug_ipcomp  |= pfkey_x_debug->sadb_x_debug_ipcomp;
+#endif /* CONFIG_KLIPS_IPCOMP */
+                       sysctl_ipsec_debug_verbose |= pfkey_x_debug->sadb_x_debug_verbose;
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_x_debug_process: "
+                                   "set\n");
+               } else {
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_x_debug_process: "
+                                   "unset\n");
+                       debug_tunnel  &= pfkey_x_debug->sadb_x_debug_tunnel;
+                       debug_netlink &= pfkey_x_debug->sadb_x_debug_netlink;
+                       debug_xform   &= pfkey_x_debug->sadb_x_debug_xform;
+                       debug_eroute  &= pfkey_x_debug->sadb_x_debug_eroute;
+                       debug_spi     &= pfkey_x_debug->sadb_x_debug_spi;
+                       debug_radij   &= pfkey_x_debug->sadb_x_debug_radij;
+                       debug_esp     &= pfkey_x_debug->sadb_x_debug_esp;
+                       debug_ah      &= pfkey_x_debug->sadb_x_debug_ah;
+                       debug_rcv     &= pfkey_x_debug->sadb_x_debug_rcv;
+                       debug_pfkey   &= pfkey_x_debug->sadb_x_debug_pfkey;
+#ifdef CONFIG_KLIPS_IPCOMP
+                       sysctl_ipsec_debug_ipcomp  &= pfkey_x_debug->sadb_x_debug_ipcomp;
+#endif /* CONFIG_KLIPS_IPCOMP */
+                       sysctl_ipsec_debug_verbose &= pfkey_x_debug->sadb_x_debug_verbose;
+               }
+#else /* CONFIG_KLIPS_DEBUG */
+               printk("klips_debug:pfkey_x_debug_process: "
+                      "debugging not enabled\n");
+               SENDERR(EINVAL);
+#endif /* CONFIG_KLIPS_DEBUG */
+       
+errlab:
+       return error;
+}
+
+/*
+ * $Log: pfkey_v2_ext_process.c,v $
+ * Revision 1.20.2.4  2007-11-16 03:42:22  paul
+ * Fix for 64bit big endian machines where a cast for struct in_addr was
+ * wrong. This resulted in KLIPS dropping all NAT-T packets with the
+ * error:
+ *
+ * klips_debug:ipsec_xmit_SAlookup: checking for local udp/500 IKE packet
+ * saddr=a010c92, er=0p0000000000000000, daddr=a010f17, er_dst=0, proto=1
+ * sport=0 dport=0
+ * klips_debug:ipsec_xmit_encap_bundle: shunt SA of DROP or no eroute:
+ * dropping.
+ *
+ * Patch by [dhr]
+ *
+ * Revision 1.20.2.3  2007/09/05 02:56:10  paul
+ * Use the new ipsec_kversion macros by David to deal with 2.6.22 kernels.
+ * Fixes based on David McCullough patch.
+ *
+ * Revision 1.20.2.2  2006/10/06 21:39:26  paul
+ * Fix for 2.6.18+ only include linux/config.h if AUTOCONF_INCLUDED is not
+ * set. This is defined through autoconf.h which is included through the
+ * linux kernel build macros.
+ *
+ * Revision 1.20.2.1  2006/04/20 16:33:07  mcr
+ * remove all of CONFIG_KLIPS_ALG --- one can no longer build without it.
+ * Fix in-kernel module compilation. Sub-makefiles do not work.
+ *
+ * Revision 1.20  2005/04/29 05:10:22  mcr
+ *     removed from extraenous includes to make unit testing easier.
+ *
+ * Revision 1.19  2004/12/04 07:14:18  mcr
+ *     resolution to gcc3-ism was wrong. fixed to assign correct
+ *     variable.
+ *
+ * Revision 1.18  2004/12/03 21:25:57  mcr
+ *     compile time fixes for running on 2.6.
+ *     still experimental.
+ *
+ * Revision 1.17  2004/08/21 00:45:04  mcr
+ *     CONFIG_KLIPS_NAT was wrong, also need to include udp.h.
+ *
+ * Revision 1.16  2004/07/10 19:11:18  mcr
+ *     CONFIG_IPSEC -> CONFIG_KLIPS.
+ *
+ * Revision 1.15  2004/04/06 02:49:26  mcr
+ *     pullup of algo code from alg-branch.
+ *
+ * Revision 1.14  2004/02/03 03:13:59  mcr
+ *     no longer #ifdef out NON_ESP mode. That was a mistake.
+ *
+ * Revision 1.13  2003/12/15 18:13:12  mcr
+ *     when compiling with NAT traversal, don't assume that the
+ *     kernel has been patched, unless CONFIG_IPSEC_NAT_NON_ESP
+ *     is set.
+ *
+ * Revision 1.12.2.1  2003/12/22 15:25:52  jjo
+ *      Merged algo-0.8.1-rc11-test1 into alg-branch
+ *
+ * Revision 1.12  2003/12/10 01:14:27  mcr
+ *     NAT-traversal patches to KLIPS.
+ *
+ * Revision 1.11  2003/10/31 02:27:55  mcr
+ *     pulled up port-selector patches and sa_id elimination.
+ *
+ * Revision 1.10.4.2  2003/10/29 01:30:41  mcr
+ *     elimited "struct sa_id".
+ *
+ * Revision 1.10.4.1  2003/09/21 13:59:56  mcr
+ *     pre-liminary X.509 patch - does not yet pass tests.
+ *
+ * Revision 1.10  2003/02/06 01:51:41  rgb
+ * Removed no longer relevant comment
+ *
+ * Revision 1.9  2003/01/30 02:32:44  rgb
+ *
+ * Transmit error code through to caller from callee for better diagnosis of problems.
+ *
+ * Revision 1.8  2002/12/13 22:42:22  mcr
+ *     restored sa_ref code
+ *
+ * Revision 1.7  2002/12/13 22:40:48  mcr
+ *     temporarily removed sadb_x_sa_ref reference for 2.xx
+ *
+ * Revision 1.6  2002/10/05 05:02:58  dhr
+ *
+ * C labels go on statements
+ *
+ * Revision 1.5  2002/09/20 15:41:08  rgb
+ * Switch from pfkey_alloc_ipsec_sa() to ipsec_sa_alloc().
+ * Added sadb_x_sa_ref to struct sadb_sa.
+ *
+ * Revision 1.4  2002/09/20 05:02:02  rgb
+ * Added memory allocation debugging.
+ *
+ * Revision 1.3  2002/07/24 18:44:54  rgb
+ * Type fiddling to tame ia64 compiler.
+ *
+ * Revision 1.2  2002/05/27 18:55:03  rgb
+ * Remove final vistiges of tdb references via IPSEC_KLIPS1_COMPAT.
+ *
+ * Revision 1.1  2002/05/14 02:33:51  rgb
+ * Moved all the extension processing functions to pfkey_v2_ext_process.c.
+ *
+ *
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ *
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/pfkey_v2_parse.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,1846 @@
+/*
+ * RFC2367 PF_KEYv2 Key management API message parser
+ * Copyright (C) 1999, 2000, 2001  Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id: pfkey_v2_parse.c,v 1.65 2005-04-06 17:46:05 mcr Exp $
+ */
+
+/*
+ *             Template from klips/net/ipsec/ipsec/ipsec_parser.c.
+ */
+
+char pfkey_v2_parse_c_version[] = "$Id: pfkey_v2_parse.c,v 1.65 2005-04-06 17:46:05 mcr Exp $";
+
+/*
+ * Some ugly stuff to allow consistent debugging code for use in the
+ * kernel and in user space
+*/
+
+#ifdef __KERNEL__
+
+# include <linux/kernel.h>  /* for printk */
+
+#include "openswan/ipsec_kversion.h" /* for malloc switch */
+
+# ifdef MALLOC_SLAB
+#  include <linux/slab.h> /* kmalloc() */
+# else /* MALLOC_SLAB */
+#  include <linux/malloc.h> /* kmalloc() */
+# endif /* MALLOC_SLAB */
+# include <linux/errno.h>  /* error codes */
+# include <linux/types.h>  /* size_t */
+# include <linux/interrupt.h> /* mark_bh */
+
+# include <linux/netdevice.h>   /* struct device, and other headers */
+# include <linux/etherdevice.h> /* eth_type_trans */
+# include <linux/ip.h>          /* struct iphdr */ 
+# if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
+#  include <linux/ipv6.h>        /* struct ipv6hdr */
+# endif /* if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) */
+extern int debug_pfkey;
+
+# include <openswan.h>
+
+#include "openswan/ipsec_encap.h"
+
+#else /* __KERNEL__ */
+
+# include <sys/types.h>
+# include <linux/types.h>
+# include <linux/errno.h>
+
+# include <openswan.h>
+# include "constants.h" 
+# include "programs/pluto/defs.h"  /* for PRINTF_LIKE */
+
+#endif /* __KERNEL__ */
+
+
+#include <pfkeyv2.h>
+#include <pfkey.h>
+
+#include "openswan/ipsec_sa.h"  /* IPSEC_SAREF_NULL, IPSEC_SA_REF_TABLE_IDX_WIDTH */
+
+/* 
+ * how to handle debugging for pfkey.
+ */
+#include <openswan/pfkey_debug.h>
+
+unsigned int pfkey_lib_debug = PF_KEY_DEBUG_PARSE_NONE;
+void (*pfkey_debug_func)(const char *message, ...) PRINTF_LIKE(1);
+void (*pfkey_error_func)(const char *message, ...) PRINTF_LIKE(1);
+
+
+#define SENDERR(_x) do { error = -(_x); goto errlab; } while (0)
+
+struct satype_tbl {
+       uint8_t proto;
+       uint8_t satype;
+       char* name;
+} static satype_tbl[] = {
+#ifdef __KERNEL__
+       { IPPROTO_ESP,  SADB_SATYPE_ESP,        "ESP"  },
+       { IPPROTO_AH,   SADB_SATYPE_AH,         "AH"   },
+       { IPPROTO_IPIP, SADB_X_SATYPE_IPIP,     "IPIP" },
+#ifdef CONFIG_KLIPS_IPCOMP
+       { IPPROTO_COMP, SADB_X_SATYPE_COMP,     "COMP" },
+#endif /* CONFIG_KLIPS_IPCOMP */
+       { IPPROTO_INT,  SADB_X_SATYPE_INT,      "INT" },
+#else /* __KERNEL__ */
+       { SA_ESP,       SADB_SATYPE_ESP,        "ESP"  },
+       { SA_AH,        SADB_SATYPE_AH,         "AH"   },
+       { SA_IPIP,      SADB_X_SATYPE_IPIP,     "IPIP" },
+       { SA_COMP,      SADB_X_SATYPE_COMP,     "COMP" },
+       { SA_INT,       SADB_X_SATYPE_INT,      "INT" },
+#endif /* __KERNEL__ */
+       { 0,            0,                      "UNKNOWN" }
+};
+
+uint8_t
+satype2proto(uint8_t satype)
+{
+       int i =0;
+
+       while(satype_tbl[i].satype != satype && satype_tbl[i].satype != 0) {
+               i++;
+       }
+       return satype_tbl[i].proto;
+}
+
+uint8_t
+proto2satype(uint8_t proto)
+{
+       int i = 0;
+
+       while(satype_tbl[i].proto != proto && satype_tbl[i].proto != 0) {
+               i++;
+       }
+       return satype_tbl[i].satype;
+}
+
+char*
+satype2name(uint8_t satype)
+{
+       int i = 0;
+
+       while(satype_tbl[i].satype != satype && satype_tbl[i].satype != 0) {
+               i++;
+       }
+       return satype_tbl[i].name;
+}
+
+char*
+proto2name(uint8_t proto)
+{
+       int i = 0;
+
+       while(satype_tbl[i].proto != proto && satype_tbl[i].proto != 0) {
+               i++;
+       }
+       return satype_tbl[i].name;
+}
+
+/* Default extension parsers taken from the KLIPS code */
+
+DEBUG_NO_STATIC int
+pfkey_sa_parse(struct sadb_ext *pfkey_ext)
+{
+       int error = 0;
+       struct sadb_sa *pfkey_sa = (struct sadb_sa *)pfkey_ext;
+#if 0
+       struct sadb_sa sav2;
+#endif
+       
+       /* sanity checks... */
+       if(!pfkey_sa) {
+               ERROR("pfkey_sa_parse: "
+                         "NULL pointer passed in.\n");
+               SENDERR(EINVAL);
+       }
+       
+#if 0
+       /* check if this structure is short, and if so, fix it up.
+        * XXX this is NOT the way to do things.
+        */
+       if(pfkey_sa->sadb_sa_len == sizeof(struct sadb_sa_v1)/IPSEC_PFKEYv2_ALIGN) {
+
+               /* yes, so clear out a temporary structure, and copy first */
+               memset(&sav2, 0, sizeof(sav2));
+               memcpy(&sav2, pfkey_sa, sizeof(struct sadb_sa_v1));
+               sav2.sadb_x_sa_ref=-1;
+               sav2.sadb_sa_len = sizeof(struct sadb_sa) / IPSEC_PFKEYv2_ALIGN;
+               
+               pfkey_sa = &sav2;
+       }
+#endif
+
+
+       if(pfkey_sa->sadb_sa_len != sizeof(struct sadb_sa) / IPSEC_PFKEYv2_ALIGN) {
+               ERROR(
+                         "pfkey_sa_parse: "
+                         "length wrong pfkey_sa->sadb_sa_len=%d sizeof(struct sadb_sa)=%d.\n",
+                         pfkey_sa->sadb_sa_len,
+                         (int)sizeof(struct sadb_sa));
+               SENDERR(EINVAL);
+       }
+
+#if SADB_EALG_MAX < 255        
+       if(pfkey_sa->sadb_sa_encrypt > SADB_EALG_MAX) {
+               ERROR(
+                         "pfkey_sa_parse: "
+                         "pfkey_sa->sadb_sa_encrypt=%d > SADB_EALG_MAX=%d.\n",
+                         pfkey_sa->sadb_sa_encrypt,
+                         SADB_EALG_MAX);
+               SENDERR(EINVAL);
+       }
+#endif
+       
+#if SADB_AALG_MAX < 255        
+       if(pfkey_sa->sadb_sa_auth > SADB_AALG_MAX) {
+               ERROR(
+                         "pfkey_sa_parse: "
+                         "pfkey_sa->sadb_sa_auth=%d > SADB_AALG_MAX=%d.\n",
+                         pfkey_sa->sadb_sa_auth,
+                         SADB_AALG_MAX);
+               SENDERR(EINVAL);
+       }
+#endif
+       
+#if SADB_SASTATE_MAX < 255     
+       if(pfkey_sa->sadb_sa_state > SADB_SASTATE_MAX) {
+               ERROR(
+                         "pfkey_sa_parse: "
+                         "state=%d exceeds MAX=%d.\n",
+                         pfkey_sa->sadb_sa_state,
+                         SADB_SASTATE_MAX);
+               SENDERR(EINVAL);
+       }
+#endif
+       
+       if(pfkey_sa->sadb_sa_state == SADB_SASTATE_DEAD) {
+               ERROR(
+                         "pfkey_sa_parse: "
+                         "state=%d is DEAD=%d.\n",
+                         pfkey_sa->sadb_sa_state,
+                         SADB_SASTATE_DEAD);
+               SENDERR(EINVAL);
+       }
+       
+       if(pfkey_sa->sadb_sa_replay > 64) {
+               ERROR(
+                         "pfkey_sa_parse: "
+                         "replay window size: %d -- must be 0 <= size <= 64\n",
+                         pfkey_sa->sadb_sa_replay);
+               SENDERR(EINVAL);
+       }
+       
+       if(! ((pfkey_sa->sadb_sa_exttype ==  SADB_EXT_SA) ||
+             (pfkey_sa->sadb_sa_exttype ==  SADB_X_EXT_SA2)))
+       {
+               ERROR(
+                         "pfkey_sa_parse: "
+                         "unknown exttype=%d, expecting SADB_EXT_SA=%d or SADB_X_EXT_SA2=%d.\n",
+                         pfkey_sa->sadb_sa_exttype,
+                         SADB_EXT_SA,
+                         SADB_X_EXT_SA2);
+               SENDERR(EINVAL);
+       }
+
+       if((IPSEC_SAREF_NULL != pfkey_sa->sadb_x_sa_ref) && (pfkey_sa->sadb_x_sa_ref >= (1 << IPSEC_SA_REF_TABLE_IDX_WIDTH))) {
+               ERROR(
+                         "pfkey_sa_parse: "
+                         "SAref=%d must be (SAref == IPSEC_SAREF_NULL(%d) || SAref < IPSEC_SA_REF_TABLE_NUM_ENTRIES(%d)).\n",
+                         pfkey_sa->sadb_x_sa_ref,
+                         IPSEC_SAREF_NULL,
+                         IPSEC_SA_REF_TABLE_NUM_ENTRIES);
+               SENDERR(EINVAL);
+       }
+       
+       DEBUGGING(PF_KEY_DEBUG_PARSE_STRUCT,
+                 "pfkey_sa_parse: "
+                 "successfully found len=%d exttype=%d(%s) spi=%08lx replay=%d state=%d auth=%d encrypt=%d flags=%d ref=%d.\n",
+                 pfkey_sa->sadb_sa_len,
+                 pfkey_sa->sadb_sa_exttype,
+                 pfkey_v2_sadb_ext_string(pfkey_sa->sadb_sa_exttype),
+                 (long unsigned int)ntohl(pfkey_sa->sadb_sa_spi),
+                 pfkey_sa->sadb_sa_replay,
+                 pfkey_sa->sadb_sa_state,
+                 pfkey_sa->sadb_sa_auth,
+                 pfkey_sa->sadb_sa_encrypt,
+                 pfkey_sa->sadb_sa_flags,
+                 pfkey_sa->sadb_x_sa_ref);
+       
+ errlab:
+       return error;
+}      
+
+DEBUG_NO_STATIC int
+pfkey_lifetime_parse(struct sadb_ext  *pfkey_ext)
+{
+       int error = 0;
+       struct sadb_lifetime *pfkey_lifetime = (struct sadb_lifetime *)pfkey_ext;
+
+       DEBUGGING(PF_KEY_DEBUG_PARSE_FLOW,
+                 "pfkey_lifetime_parse:enter\n");
+       /* sanity checks... */
+       if(!pfkey_lifetime) {
+               DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                         "pfkey_lifetime_parse: "
+                         "NULL pointer passed in.\n");
+               SENDERR(EINVAL);
+       }
+
+       if(pfkey_lifetime->sadb_lifetime_len !=
+          sizeof(struct sadb_lifetime) / IPSEC_PFKEYv2_ALIGN) {
+               DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                         "pfkey_lifetime_parse: "
+                         "length wrong pfkey_lifetime->sadb_lifetime_len=%d sizeof(struct sadb_lifetime)=%d.\n",
+                         pfkey_lifetime->sadb_lifetime_len,
+                         (int)sizeof(struct sadb_lifetime));
+               SENDERR(EINVAL);
+       }
+
+       if((pfkey_lifetime->sadb_lifetime_exttype != SADB_EXT_LIFETIME_HARD) &&
+          (pfkey_lifetime->sadb_lifetime_exttype != SADB_EXT_LIFETIME_SOFT) &&
+          (pfkey_lifetime->sadb_lifetime_exttype != SADB_EXT_LIFETIME_CURRENT)) {
+               DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                         "pfkey_lifetime_parse: "
+                         "unexpected ext_type=%d.\n", 
+                         pfkey_lifetime->sadb_lifetime_exttype); 
+               SENDERR(EINVAL);
+       }
+
+       DEBUGGING(PF_KEY_DEBUG_PARSE_STRUCT,
+                 "pfkey_lifetime_parse: "
+                 "life_type=%d(%s) alloc=%u bytes=%u add=%u use=%u pkts=%u.\n", 
+                 pfkey_lifetime->sadb_lifetime_exttype,
+                 pfkey_v2_sadb_ext_string(pfkey_lifetime->sadb_lifetime_exttype),
+                 pfkey_lifetime->sadb_lifetime_allocations,
+                 (unsigned)pfkey_lifetime->sadb_lifetime_bytes,
+                 (unsigned)pfkey_lifetime->sadb_lifetime_addtime,
+                 (unsigned)pfkey_lifetime->sadb_lifetime_usetime,
+                 pfkey_lifetime->sadb_x_lifetime_packets); 
+errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_address_parse(struct sadb_ext *pfkey_ext)
+{
+       int error = 0;
+       int saddr_len = 0;
+       struct sadb_address *pfkey_address = (struct sadb_address *)pfkey_ext;
+       struct sockaddr* s = (struct sockaddr*)((char*)pfkey_address + sizeof(*pfkey_address));
+       char ipaddr_txt[ADDRTOT_BUF];
+       
+       /* sanity checks... */
+       if(!pfkey_address) {
+               ERROR(
+                       "pfkey_address_parse: "
+                       "NULL pointer passed in.\n");
+               SENDERR(EINVAL);
+       }
+       
+       if(pfkey_address->sadb_address_len <
+          (sizeof(struct sadb_address) + sizeof(struct sockaddr))/
+          IPSEC_PFKEYv2_ALIGN) {
+               ERROR("pfkey_address_parse: "
+                         "size wrong 1 ext_len=%d, adr_ext_len=%d, saddr_len=%d.\n",
+                         pfkey_address->sadb_address_len,
+                         (int)sizeof(struct sadb_address),
+                         (int)sizeof(struct sockaddr));
+               SENDERR(EINVAL);
+       }
+       
+       if(pfkey_address->sadb_address_reserved) {
+               ERROR("pfkey_address_parse: "
+                         "res=%d, must be zero.\n",
+                         pfkey_address->sadb_address_reserved);
+               SENDERR(EINVAL);
+       }
+       
+       switch(pfkey_address->sadb_address_exttype) {   
+       case SADB_EXT_ADDRESS_SRC:
+       case SADB_EXT_ADDRESS_DST:
+       case SADB_EXT_ADDRESS_PROXY:
+       case SADB_X_EXT_ADDRESS_DST2:
+       case SADB_X_EXT_ADDRESS_SRC_FLOW:
+       case SADB_X_EXT_ADDRESS_DST_FLOW:
+       case SADB_X_EXT_ADDRESS_SRC_MASK:
+       case SADB_X_EXT_ADDRESS_DST_MASK:
+#ifdef NAT_TRAVERSAL
+       case SADB_X_EXT_NAT_T_OA:
+#endif
+               break;
+       default:
+               ERROR(
+                       "pfkey_address_parse: "
+                       "unexpected ext_type=%d.\n",
+                       pfkey_address->sadb_address_exttype);
+               SENDERR(ENOPKG);
+       }
+
+       switch(s->sa_family) {
+       case AF_INET:
+               saddr_len = sizeof(struct sockaddr_in);
+               sprintf(ipaddr_txt, "%d.%d.%d.%d"
+                       , (((struct sockaddr_in*)s)->sin_addr.s_addr >>  0) & 0xFF
+                       , (((struct sockaddr_in*)s)->sin_addr.s_addr >>  8) & 0xFF
+                       , (((struct sockaddr_in*)s)->sin_addr.s_addr >> 16) & 0xFF
+                       , (((struct sockaddr_in*)s)->sin_addr.s_addr >> 24) & 0xFF);
+               DEBUGGING(PF_KEY_DEBUG_PARSE_STRUCT,
+                         "pfkey_address_parse: "
+                         "found exttype=%u(%s) family=%d(AF_INET) address=%s proto=%u port=%u.\n",
+                         pfkey_address->sadb_address_exttype,
+                         pfkey_v2_sadb_ext_string(pfkey_address->sadb_address_exttype),
+                         s->sa_family,
+                         ipaddr_txt,
+                         pfkey_address->sadb_address_proto,
+                         ntohs(((struct sockaddr_in*)s)->sin_port));
+               break;
+       case AF_INET6:
+               saddr_len = sizeof(struct sockaddr_in6);
+               sprintf(ipaddr_txt, "%x:%x:%x:%x:%x:%x:%x:%x"
+                       , ntohs(((struct sockaddr_in6*)s)->sin6_addr.s6_addr16[0])
+                       , ntohs(((struct sockaddr_in6*)s)->sin6_addr.s6_addr16[1])
+                       , ntohs(((struct sockaddr_in6*)s)->sin6_addr.s6_addr16[2])
+                       , ntohs(((struct sockaddr_in6*)s)->sin6_addr.s6_addr16[3])
+                       , ntohs(((struct sockaddr_in6*)s)->sin6_addr.s6_addr16[4])
+                       , ntohs(((struct sockaddr_in6*)s)->sin6_addr.s6_addr16[5])
+                       , ntohs(((struct sockaddr_in6*)s)->sin6_addr.s6_addr16[6])
+                       , ntohs(((struct sockaddr_in6*)s)->sin6_addr.s6_addr16[7]));
+               DEBUGGING(PF_KEY_DEBUG_PARSE_STRUCT,
+                         "pfkey_address_parse: "
+                         "found exttype=%u(%s) family=%d(AF_INET6) address=%s proto=%u port=%u.\n",
+                         pfkey_address->sadb_address_exttype,
+                         pfkey_v2_sadb_ext_string(pfkey_address->sadb_address_exttype),
+                         s->sa_family,
+                         ipaddr_txt,
+                         pfkey_address->sadb_address_proto,
+                         ((struct sockaddr_in6*)s)->sin6_port);
+               break;
+       default:
+               ERROR(
+                       "pfkey_address_parse: "
+                       "s->sa_family=%d not supported.\n",
+                       s->sa_family);
+               SENDERR(EPFNOSUPPORT);
+       }
+       
+       if(pfkey_address->sadb_address_len !=
+          DIVUP(sizeof(struct sadb_address) + saddr_len, IPSEC_PFKEYv2_ALIGN)) {
+               ERROR(
+                         "pfkey_address_parse: "
+                         "size wrong 2 ext_len=%d, adr_ext_len=%d, saddr_len=%d.\n",
+                         pfkey_address->sadb_address_len,
+                         (int)sizeof(struct sadb_address),
+                         saddr_len);
+               SENDERR(EINVAL);
+       }
+       
+       if(pfkey_address->sadb_address_prefixlen != 0) {
+               ERROR(
+                       "pfkey_address_parse: "
+                       "address prefixes not supported yet.\n");
+               SENDERR(EAFNOSUPPORT); /* not supported yet */
+       }
+       
+       /* XXX check if port!=0 */
+       
+       DEBUGGING(PF_KEY_DEBUG_PARSE_FLOW,
+               "pfkey_address_parse: successful.\n");
+ errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_key_parse(struct sadb_ext *pfkey_ext)
+{
+       int error = 0;
+       struct sadb_key *pfkey_key = (struct sadb_key *)pfkey_ext;
+
+       /* sanity checks... */
+
+       if(!pfkey_key) {
+               ERROR(
+                       "pfkey_key_parse: "
+                       "NULL pointer passed in.\n");
+               SENDERR(EINVAL);
+       }
+
+       if(pfkey_key->sadb_key_len < sizeof(struct sadb_key) / IPSEC_PFKEYv2_ALIGN) {
+               ERROR(
+                         "pfkey_key_parse: "
+                         "size wrong ext_len=%d, key_ext_len=%d.\n",
+                         pfkey_key->sadb_key_len,
+                         (int)sizeof(struct sadb_key));
+               SENDERR(EINVAL);
+       }
+
+       if(!pfkey_key->sadb_key_bits) {
+               ERROR(
+                       "pfkey_key_parse: "
+                       "key length set to zero, must be non-zero.\n");
+               SENDERR(EINVAL);
+       }
+
+       if(pfkey_key->sadb_key_len !=
+          DIVUP(sizeof(struct sadb_key) * OCTETBITS + pfkey_key->sadb_key_bits,
+                PFKEYBITS)) {
+               ERROR(
+                       "pfkey_key_parse: "
+                       "key length=%d does not agree with extension length=%d.\n",
+                       pfkey_key->sadb_key_bits,
+                       pfkey_key->sadb_key_len);
+               SENDERR(EINVAL);
+       }
+       
+       if(pfkey_key->sadb_key_reserved) {
+               ERROR(
+                       "pfkey_key_parse: "
+                       "res=%d, must be zero.\n",
+                       pfkey_key->sadb_key_reserved);
+               SENDERR(EINVAL);
+       }
+
+       if(! ( (pfkey_key->sadb_key_exttype == SADB_EXT_KEY_AUTH) ||
+              (pfkey_key->sadb_key_exttype == SADB_EXT_KEY_ENCRYPT))) {
+               ERROR(
+                       "pfkey_key_parse: "
+                       "expecting extension type AUTH or ENCRYPT, got %d.\n",
+                       pfkey_key->sadb_key_exttype);
+               SENDERR(EINVAL);
+       }
+
+       DEBUGGING(PF_KEY_DEBUG_PARSE_STRUCT,
+                 "pfkey_key_parse: "
+                 "success, found len=%d exttype=%d(%s) bits=%d reserved=%d.\n",
+                 pfkey_key->sadb_key_len,
+                 pfkey_key->sadb_key_exttype,
+                 pfkey_v2_sadb_ext_string(pfkey_key->sadb_key_exttype),
+                 pfkey_key->sadb_key_bits,
+                 pfkey_key->sadb_key_reserved);
+
+errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_ident_parse(struct sadb_ext *pfkey_ext)
+{
+       int error = 0;
+       struct sadb_ident *pfkey_ident = (struct sadb_ident *)pfkey_ext;
+
+       /* sanity checks... */
+       if(pfkey_ident->sadb_ident_len < sizeof(struct sadb_ident) / IPSEC_PFKEYv2_ALIGN) {
+               ERROR(
+                         "pfkey_ident_parse: "
+                         "size wrong ext_len=%d, key_ext_len=%d.\n",
+                         pfkey_ident->sadb_ident_len,
+                         (int)sizeof(struct sadb_ident));
+               SENDERR(EINVAL);
+       }
+
+       if(pfkey_ident->sadb_ident_type > SADB_IDENTTYPE_MAX) {
+               ERROR(
+                       "pfkey_ident_parse: "
+                       "ident_type=%d out of range, must be less than %d.\n",
+                       pfkey_ident->sadb_ident_type,
+                       SADB_IDENTTYPE_MAX);
+               SENDERR(EINVAL);
+       }
+
+       if(pfkey_ident->sadb_ident_reserved) {
+               ERROR(
+                       "pfkey_ident_parse: "
+                       "res=%d, must be zero.\n",
+                       pfkey_ident->sadb_ident_reserved);
+               SENDERR(EINVAL);
+       }
+
+       /* string terminator/padding must be zero */
+       if(pfkey_ident->sadb_ident_len > sizeof(struct sadb_ident) / IPSEC_PFKEYv2_ALIGN) {
+               if(*((char*)pfkey_ident + pfkey_ident->sadb_ident_len * IPSEC_PFKEYv2_ALIGN - 1)) {
+                       ERROR(
+                               "pfkey_ident_parse: "
+                               "string padding must be zero, last is 0x%02x.\n",
+                               *((char*)pfkey_ident +
+                                 pfkey_ident->sadb_ident_len * IPSEC_PFKEYv2_ALIGN - 1));
+                       SENDERR(EINVAL);
+               }
+       }
+       
+       if( ! ((pfkey_ident->sadb_ident_exttype == SADB_EXT_IDENTITY_SRC) ||
+              (pfkey_ident->sadb_ident_exttype == SADB_EXT_IDENTITY_DST))) {
+               ERROR(
+                       "pfkey_key_parse: "
+                       "expecting extension type IDENTITY_SRC or IDENTITY_DST, got %d.\n",
+                       pfkey_ident->sadb_ident_exttype);
+               SENDERR(EINVAL);
+       }
+
+errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_sens_parse(struct sadb_ext *pfkey_ext)
+{
+       int error = 0;
+       struct sadb_sens *pfkey_sens = (struct sadb_sens *)pfkey_ext;
+
+       /* sanity checks... */
+       if(pfkey_sens->sadb_sens_len < sizeof(struct sadb_sens) / IPSEC_PFKEYv2_ALIGN) {
+               DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                         "pfkey_sens_parse: "
+                         "size wrong ext_len=%d, key_ext_len=%d.\n",
+                         pfkey_sens->sadb_sens_len,
+                         (int)sizeof(struct sadb_sens));
+               SENDERR(EINVAL);
+       }
+
+       DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+               "pfkey_sens_parse: "
+               "Sorry, I can't parse exttype=%d yet.\n",
+               pfkey_ext->sadb_ext_type);
+#if 0
+       SENDERR(EINVAL); /* don't process these yet */
+#endif
+
+errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_prop_parse(struct sadb_ext *pfkey_ext)
+{
+       int error = 0;
+       int i, num_comb;
+       struct sadb_prop *pfkey_prop = (struct sadb_prop *)pfkey_ext;
+       struct sadb_comb *pfkey_comb = (struct sadb_comb *)((char*)pfkey_ext + sizeof(struct sadb_prop));
+
+       /* sanity checks... */
+       if((pfkey_prop->sadb_prop_len < sizeof(struct sadb_prop) / IPSEC_PFKEYv2_ALIGN) || 
+          (((pfkey_prop->sadb_prop_len * IPSEC_PFKEYv2_ALIGN) - sizeof(struct sadb_prop)) % sizeof(struct sadb_comb))) {
+               DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                         "pfkey_prop_parse: "
+                         "size wrong ext_len=%d, prop_ext_len=%d comb_ext_len=%d.\n",
+                         pfkey_prop->sadb_prop_len,
+                         (int)sizeof(struct sadb_prop),
+                         (int)sizeof(struct sadb_comb));
+               SENDERR(EINVAL);
+       }
+
+       if(pfkey_prop->sadb_prop_replay > 64) {
+               DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                       "pfkey_prop_parse: "
+                       "replay window size: %d -- must be 0 <= size <= 64\n",
+                       pfkey_prop->sadb_prop_replay);
+               SENDERR(EINVAL);
+       }
+       
+       for(i=0; i<3; i++) {
+               if(pfkey_prop->sadb_prop_reserved[i]) {
+                       DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                               "pfkey_prop_parse: "
+                               "res[%d]=%d, must be zero.\n",
+                               i, pfkey_prop->sadb_prop_reserved[i]);
+                       SENDERR(EINVAL);
+               }
+       }
+
+       num_comb = ((pfkey_prop->sadb_prop_len * IPSEC_PFKEYv2_ALIGN) - sizeof(struct sadb_prop)) / sizeof(struct sadb_comb);
+
+       for(i = 0; i < num_comb; i++) {
+               if(pfkey_comb->sadb_comb_auth > SADB_AALG_MAX) {
+                       DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                               "pfkey_prop_parse: "
+                               "pfkey_comb[%d]->sadb_comb_auth=%d > SADB_AALG_MAX=%d.\n",
+                               i,
+                               pfkey_comb->sadb_comb_auth,
+                               SADB_AALG_MAX);
+                       SENDERR(EINVAL);
+               }
+
+               if(pfkey_comb->sadb_comb_auth) {
+                       if(!pfkey_comb->sadb_comb_auth_minbits) {
+                               DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                                       "pfkey_prop_parse: "
+                                       "pfkey_comb[%d]->sadb_comb_auth_minbits=0, fatal.\n",
+                                       i);
+                               SENDERR(EINVAL);
+                       }
+                       if(!pfkey_comb->sadb_comb_auth_maxbits) {
+                               DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                                       "pfkey_prop_parse: "
+                                       "pfkey_comb[%d]->sadb_comb_auth_maxbits=0, fatal.\n",
+                                       i);
+                               SENDERR(EINVAL);
+                       }
+                       if(pfkey_comb->sadb_comb_auth_minbits > pfkey_comb->sadb_comb_auth_maxbits) {
+                               DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                                       "pfkey_prop_parse: "
+                                       "pfkey_comb[%d]->sadb_comb_auth_minbits=%d > maxbits=%d, fatal.\n",
+                                       i,
+                                       pfkey_comb->sadb_comb_auth_minbits,
+                                       pfkey_comb->sadb_comb_auth_maxbits);
+                               SENDERR(EINVAL);
+                       }
+               } else {
+                       if(pfkey_comb->sadb_comb_auth_minbits) {
+                               DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                                       "pfkey_prop_parse: "
+                                       "pfkey_comb[%d]->sadb_comb_auth_minbits=%d != 0, fatal.\n",
+                                       i,
+                                       pfkey_comb->sadb_comb_auth_minbits);
+                               SENDERR(EINVAL);
+                       }
+                       if(pfkey_comb->sadb_comb_auth_maxbits) {
+                               DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                                       "pfkey_prop_parse: "
+                                       "pfkey_comb[%d]->sadb_comb_auth_maxbits=%d != 0, fatal.\n",
+                                       i,
+                                       pfkey_comb->sadb_comb_auth_maxbits);
+                               SENDERR(EINVAL);
+                       }
+               }
+
+#if SADB_EALG_MAX < 255        
+               if(pfkey_comb->sadb_comb_encrypt > SADB_EALG_MAX) {
+                       DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                               "pfkey_comb_parse: "
+                               "pfkey_comb[%d]->sadb_comb_encrypt=%d > SADB_EALG_MAX=%d.\n",
+                               i,
+                               pfkey_comb->sadb_comb_encrypt,
+                               SADB_EALG_MAX);
+                       SENDERR(EINVAL);
+               }
+#endif
+
+               if(pfkey_comb->sadb_comb_encrypt) {
+                       if(!pfkey_comb->sadb_comb_encrypt_minbits) {
+                               DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                                       "pfkey_prop_parse: "
+                                       "pfkey_comb[%d]->sadb_comb_encrypt_minbits=0, fatal.\n",
+                                       i);
+                               SENDERR(EINVAL);
+                       }
+                       if(!pfkey_comb->sadb_comb_encrypt_maxbits) {
+                               DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                                       "pfkey_prop_parse: "
+                                       "pfkey_comb[%d]->sadb_comb_encrypt_maxbits=0, fatal.\n",
+                                       i);
+                               SENDERR(EINVAL);
+                       }
+                       if(pfkey_comb->sadb_comb_encrypt_minbits > pfkey_comb->sadb_comb_encrypt_maxbits) {
+                               DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                                       "pfkey_prop_parse: "
+                                       "pfkey_comb[%d]->sadb_comb_encrypt_minbits=%d > maxbits=%d, fatal.\n",
+                                       i,
+                                       pfkey_comb->sadb_comb_encrypt_minbits,
+                                       pfkey_comb->sadb_comb_encrypt_maxbits);
+                               SENDERR(EINVAL);
+                       }
+               } else {
+                       if(pfkey_comb->sadb_comb_encrypt_minbits) {
+                               DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                                       "pfkey_prop_parse: "
+                                       "pfkey_comb[%d]->sadb_comb_encrypt_minbits=%d != 0, fatal.\n",
+                                       i,
+                                       pfkey_comb->sadb_comb_encrypt_minbits);
+                               SENDERR(EINVAL);
+                       }
+                       if(pfkey_comb->sadb_comb_encrypt_maxbits) {
+                               DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                                       "pfkey_prop_parse: "
+                                       "pfkey_comb[%d]->sadb_comb_encrypt_maxbits=%d != 0, fatal.\n",
+                                       i,
+                                       pfkey_comb->sadb_comb_encrypt_maxbits);
+                               SENDERR(EINVAL);
+                       }
+               }
+
+               /* XXX do sanity check on flags */
+
+               if(pfkey_comb->sadb_comb_hard_allocations && pfkey_comb->sadb_comb_soft_allocations > pfkey_comb->sadb_comb_hard_allocations) {
+                       DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                                 "pfkey_prop_parse: "
+                                 "pfkey_comb[%d]->sadb_comb_soft_allocations=%d > hard_allocations=%d, fatal.\n",
+                                 i,
+                                 pfkey_comb->sadb_comb_soft_allocations,
+                                 pfkey_comb->sadb_comb_hard_allocations);
+                       SENDERR(EINVAL);
+               }
+
+               if(pfkey_comb->sadb_comb_hard_bytes && pfkey_comb->sadb_comb_soft_bytes > pfkey_comb->sadb_comb_hard_bytes) {
+                       DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                                 "pfkey_prop_parse: "
+                                 "pfkey_comb[%d]->sadb_comb_soft_bytes=%Ld > hard_bytes=%Ld, fatal.\n",
+                                 i,
+                                 (unsigned long long int)pfkey_comb->sadb_comb_soft_bytes,
+                                 (unsigned long long int)pfkey_comb->sadb_comb_hard_bytes);
+                       SENDERR(EINVAL);
+               }
+
+               if(pfkey_comb->sadb_comb_hard_addtime && pfkey_comb->sadb_comb_soft_addtime > pfkey_comb->sadb_comb_hard_addtime) {
+                       DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                                 "pfkey_prop_parse: "
+                                 "pfkey_comb[%d]->sadb_comb_soft_addtime=%Ld > hard_addtime=%Ld, fatal.\n",
+                                 i,
+                                 (unsigned long long int)pfkey_comb->sadb_comb_soft_addtime,
+                                 (unsigned long long int)pfkey_comb->sadb_comb_hard_addtime);
+                       SENDERR(EINVAL);
+               }
+
+               if(pfkey_comb->sadb_comb_hard_usetime && pfkey_comb->sadb_comb_soft_usetime > pfkey_comb->sadb_comb_hard_usetime) {
+                       DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                                 "pfkey_prop_parse: "
+                                 "pfkey_comb[%d]->sadb_comb_soft_usetime=%Ld > hard_usetime=%Ld, fatal.\n",
+                                 i,
+                                 (unsigned long long int)pfkey_comb->sadb_comb_soft_usetime,
+                                 (unsigned long long int)pfkey_comb->sadb_comb_hard_usetime);
+                       SENDERR(EINVAL);
+               }
+
+               if(pfkey_comb->sadb_x_comb_hard_packets && pfkey_comb->sadb_x_comb_soft_packets > pfkey_comb->sadb_x_comb_hard_packets) {
+                       DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                               "pfkey_prop_parse: "
+                               "pfkey_comb[%d]->sadb_x_comb_soft_packets=%d > hard_packets=%d, fatal.\n",
+                               i,
+                               pfkey_comb->sadb_x_comb_soft_packets,
+                               pfkey_comb->sadb_x_comb_hard_packets);
+                       SENDERR(EINVAL);
+               }
+
+               if(pfkey_comb->sadb_comb_reserved) {
+                       DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                               "pfkey_prop_parse: "
+                               "comb[%d].res=%d, must be zero.\n",
+                               i,
+                               pfkey_comb->sadb_comb_reserved);
+                       SENDERR(EINVAL);
+               }
+               pfkey_comb++;
+       }
+
+errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_supported_parse(struct sadb_ext *pfkey_ext)
+{
+       int error = 0;
+       unsigned int i, num_alg;
+       struct sadb_supported *pfkey_supported = (struct sadb_supported *)pfkey_ext;
+       struct sadb_alg *pfkey_alg = (struct sadb_alg*)((char*)pfkey_ext + sizeof(struct sadb_supported));
+
+       /* sanity checks... */
+       if((pfkey_supported->sadb_supported_len <
+          sizeof(struct sadb_supported) / IPSEC_PFKEYv2_ALIGN) ||
+          (((pfkey_supported->sadb_supported_len * IPSEC_PFKEYv2_ALIGN) -
+            sizeof(struct sadb_supported)) % sizeof(struct sadb_alg))) {
+
+               DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                         "pfkey_supported_parse: "
+                         "size wrong ext_len=%d, supported_ext_len=%d alg_ext_len=%d.\n",
+                         pfkey_supported->sadb_supported_len,
+                         (int)sizeof(struct sadb_supported),
+                         (int)sizeof(struct sadb_alg));
+               SENDERR(EINVAL);
+       }
+
+       if(pfkey_supported->sadb_supported_reserved) {
+               DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                       "pfkey_supported_parse: "
+                       "res=%d, must be zero.\n",
+                       pfkey_supported->sadb_supported_reserved);
+               SENDERR(EINVAL);
+       }
+
+       num_alg = ((pfkey_supported->sadb_supported_len * IPSEC_PFKEYv2_ALIGN) - sizeof(struct sadb_supported)) / sizeof(struct sadb_alg);
+
+       for(i = 0; i < num_alg; i++) {
+               /* process algo description */
+               if(pfkey_alg->sadb_alg_reserved) {
+                       DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                               "pfkey_supported_parse: "
+                               "alg[%d], id=%d, ivlen=%d, minbits=%d, maxbits=%d, res=%d, must be zero.\n",
+                               i,
+                               pfkey_alg->sadb_alg_id,
+                               pfkey_alg->sadb_alg_ivlen,
+                               pfkey_alg->sadb_alg_minbits,
+                               pfkey_alg->sadb_alg_maxbits,
+                               pfkey_alg->sadb_alg_reserved);
+                       SENDERR(EINVAL);
+               }
+
+               /* XXX can alg_id auth/enc be determined from info given?
+                  Yes, but OpenBSD's method does not iteroperate with rfc2367.
+                  rgb, 2000-04-06 */
+
+               switch(pfkey_supported->sadb_supported_exttype) {
+               case SADB_EXT_SUPPORTED_AUTH:
+                       if(pfkey_alg->sadb_alg_id > SADB_AALG_MAX) {
+                               DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                                       "pfkey_supported_parse: "
+                                       "alg[%d], alg_id=%d > SADB_AALG_MAX=%d, fatal.\n",
+                                       i,
+                                       pfkey_alg->sadb_alg_id,
+                                       SADB_AALG_MAX);
+                               SENDERR(EINVAL);
+                       }
+                       break;
+               case SADB_EXT_SUPPORTED_ENCRYPT:
+#if SADB_EALG_MAX < 255        
+                       if(pfkey_alg->sadb_alg_id > SADB_EALG_MAX) {
+                               DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                                       "pfkey_supported_parse: "
+                                       "alg[%d], alg_id=%d > SADB_EALG_MAX=%d, fatal.\n",
+                                       i,
+                                       pfkey_alg->sadb_alg_id,
+                                       SADB_EALG_MAX);
+                               SENDERR(EINVAL);
+                       }
+#endif
+                       break;
+               default:
+                       DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                               "pfkey_supported_parse: "
+                               "alg[%d], alg_id=%d > SADB_EALG_MAX=%d, fatal.\n",
+                               i,
+                               pfkey_alg->sadb_alg_id,
+                               SADB_EALG_MAX);
+                       SENDERR(EINVAL);
+               }
+               pfkey_alg++;
+       }
+       
+ errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_spirange_parse(struct sadb_ext *pfkey_ext)
+{
+       int error = 0;
+       struct sadb_spirange *pfkey_spirange = (struct sadb_spirange *)pfkey_ext;
+       
+       /* sanity checks... */
+        if(pfkey_spirange->sadb_spirange_len !=
+          sizeof(struct sadb_spirange) / IPSEC_PFKEYv2_ALIGN) {
+               DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                         "pfkey_spirange_parse: "
+                         "size wrong ext_len=%d, key_ext_len=%d.\n",
+                         pfkey_spirange->sadb_spirange_len,
+                         (int)sizeof(struct sadb_spirange));
+                SENDERR(EINVAL);
+        }
+       
+        if(pfkey_spirange->sadb_spirange_reserved) {
+               DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                       "pfkey_spirange_parse: "
+                       "reserved=%d must be set to zero.\n",
+                       pfkey_spirange->sadb_spirange_reserved);
+                SENDERR(EINVAL);
+        }
+       
+        if(ntohl(pfkey_spirange->sadb_spirange_max) < ntohl(pfkey_spirange->sadb_spirange_min)) {
+               DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                       "pfkey_spirange_parse: "
+                       "minspi=%08x must be < maxspi=%08x.\n",
+                       ntohl(pfkey_spirange->sadb_spirange_min),
+                       ntohl(pfkey_spirange->sadb_spirange_max));
+                SENDERR(EINVAL);
+        }
+       
+       if(ntohl(pfkey_spirange->sadb_spirange_min) <= 255) {
+               DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                       "pfkey_spirange_parse: "
+                       "minspi=%08x must be > 255.\n",
+                       ntohl(pfkey_spirange->sadb_spirange_min));
+               SENDERR(EEXIST);
+       }
+       
+       DEBUGGING(PF_KEY_DEBUG_PARSE_STRUCT,
+                 "pfkey_spirange_parse: "
+                 "ext_len=%u ext_type=%u(%s) min=%u max=%u res=%u.\n",
+                 pfkey_spirange->sadb_spirange_len,
+                 pfkey_spirange->sadb_spirange_exttype,
+                 pfkey_v2_sadb_ext_string(pfkey_spirange->sadb_spirange_exttype),
+                 pfkey_spirange->sadb_spirange_min,
+                 pfkey_spirange->sadb_spirange_max,
+                 pfkey_spirange->sadb_spirange_reserved);
+ errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_x_kmprivate_parse(struct sadb_ext *pfkey_ext)
+{
+       int error = 0;
+       struct sadb_x_kmprivate *pfkey_x_kmprivate = (struct sadb_x_kmprivate *)pfkey_ext;
+
+       /* sanity checks... */
+       if(pfkey_x_kmprivate->sadb_x_kmprivate_len <
+          sizeof(struct sadb_x_kmprivate) / IPSEC_PFKEYv2_ALIGN) {
+               DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                         "pfkey_x_kmprivate_parse: "
+                         "size wrong ext_len=%d, key_ext_len=%d.\n",
+                         pfkey_x_kmprivate->sadb_x_kmprivate_len,
+                         (int)sizeof(struct sadb_x_kmprivate));
+               SENDERR(EINVAL);
+       }
+
+       if(pfkey_x_kmprivate->sadb_x_kmprivate_reserved) {
+               DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                         "pfkey_x_kmprivate_parse: "
+                         "reserved=%d must be set to zero.\n",
+                         pfkey_x_kmprivate->sadb_x_kmprivate_reserved);
+               SENDERR(EINVAL);
+       }
+
+       DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                 "pfkey_x_kmprivate_parse: "
+                 "Sorry, I can't parse exttype=%d yet.\n",
+                 pfkey_ext->sadb_ext_type);
+       SENDERR(EINVAL); /* don't process these yet */
+
+errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_x_satype_parse(struct sadb_ext *pfkey_ext)
+{
+       int error = 0;
+       int i;
+       struct sadb_x_satype *pfkey_x_satype = (struct sadb_x_satype *)pfkey_ext;
+
+       DEBUGGING(PF_KEY_DEBUG_PARSE_FLOW,
+               "pfkey_x_satype_parse: enter\n");
+       /* sanity checks... */
+       if(pfkey_x_satype->sadb_x_satype_len !=
+          sizeof(struct sadb_x_satype) / IPSEC_PFKEYv2_ALIGN) {
+               DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                         "pfkey_x_satype_parse: "
+                         "size wrong ext_len=%d, key_ext_len=%d.\n",
+                         pfkey_x_satype->sadb_x_satype_len,
+                         (int)sizeof(struct sadb_x_satype));
+               SENDERR(EINVAL);
+       }
+       
+       if(!pfkey_x_satype->sadb_x_satype_satype) {
+               DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                       "pfkey_x_satype_parse: "
+                       "satype is zero, must be non-zero.\n");
+               SENDERR(EINVAL);
+       }
+
+       if(pfkey_x_satype->sadb_x_satype_satype > SADB_SATYPE_MAX) {
+               DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                       "pfkey_x_satype_parse: "
+                       "satype %d > max %d, invalid.\n", 
+                       pfkey_x_satype->sadb_x_satype_satype, SADB_SATYPE_MAX);
+               SENDERR(EINVAL);
+       }
+
+       if(!(satype2proto(pfkey_x_satype->sadb_x_satype_satype))) {
+               DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                       "pfkey_x_satype_parse: "
+                       "proto lookup from satype=%d failed.\n",
+                       pfkey_x_satype->sadb_x_satype_satype);
+               SENDERR(EINVAL);
+       }
+
+       for(i = 0; i < 3; i++) {
+               if(pfkey_x_satype->sadb_x_satype_reserved[i]) {
+                       DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                               "pfkey_x_satype_parse: "
+                               "reserved[%d]=%d must be set to zero.\n",
+                               i, pfkey_x_satype->sadb_x_satype_reserved[i]);
+                       SENDERR(EINVAL);
+               }
+       }
+       
+       DEBUGGING(PF_KEY_DEBUG_PARSE_STRUCT,
+                 "pfkey_x_satype_parse: "
+                 "len=%u ext=%u(%s) satype=%u(%s) res=%u,%u,%u.\n",
+                 pfkey_x_satype->sadb_x_satype_len,
+                 pfkey_x_satype->sadb_x_satype_exttype,
+                 pfkey_v2_sadb_ext_string(pfkey_x_satype->sadb_x_satype_exttype),
+                 pfkey_x_satype->sadb_x_satype_satype,
+                 satype2name(pfkey_x_satype->sadb_x_satype_satype),
+                 pfkey_x_satype->sadb_x_satype_reserved[0],
+                 pfkey_x_satype->sadb_x_satype_reserved[1],
+                 pfkey_x_satype->sadb_x_satype_reserved[2]);
+errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_x_ext_debug_parse(struct sadb_ext *pfkey_ext)
+{
+       int error = 0;
+       int i;
+       struct sadb_x_debug *pfkey_x_debug = (struct sadb_x_debug *)pfkey_ext;
+
+       DEBUGGING(PF_KEY_DEBUG_PARSE_FLOW,
+               "pfkey_x_debug_parse: enter\n");
+       /* sanity checks... */
+       if(pfkey_x_debug->sadb_x_debug_len !=
+          sizeof(struct sadb_x_debug) / IPSEC_PFKEYv2_ALIGN) {
+               DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                         "pfkey_x_debug_parse: "
+                         "size wrong ext_len=%d, key_ext_len=%d.\n",
+                         pfkey_x_debug->sadb_x_debug_len,
+                         (int)sizeof(struct sadb_x_debug));
+               SENDERR(EINVAL);
+       }
+       
+       for(i = 0; i < 4; i++) {
+               if(pfkey_x_debug->sadb_x_debug_reserved[i]) {
+                       DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                               "pfkey_x_debug_parse: "
+                               "reserved[%d]=%d must be set to zero.\n",
+                               i, pfkey_x_debug->sadb_x_debug_reserved[i]);
+                       SENDERR(EINVAL);
+               }
+       }
+       
+errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_x_ext_protocol_parse(struct sadb_ext *pfkey_ext)
+{
+       int error = 0;
+       struct sadb_protocol *p = (struct sadb_protocol *)pfkey_ext;
+       
+       DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM, "pfkey_x_protocol_parse:\n");
+       /* sanity checks... */
+       
+       if (p->sadb_protocol_len != sizeof(*p)/IPSEC_PFKEYv2_ALIGN) {
+               DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                         "pfkey_x_protocol_parse: size wrong ext_len=%d, key_ext_len=%d.\n",
+                         p->sadb_protocol_len, (int)sizeof(*p));
+               SENDERR(EINVAL);
+       }
+       
+       if (p->sadb_protocol_reserved2 != 0) {
+               DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                         "pfkey_protocol_parse: res=%d, must be zero.\n",
+                         p->sadb_protocol_reserved2);
+               SENDERR(EINVAL);
+       }
+
+ errlab:
+       return error;
+}
+
+#ifdef NAT_TRAVERSAL
+DEBUG_NO_STATIC int
+pfkey_x_ext_nat_t_type_parse(struct sadb_ext *pfkey_ext)
+{
+       return 0;
+}
+DEBUG_NO_STATIC int
+pfkey_x_ext_nat_t_port_parse(struct sadb_ext *pfkey_ext)
+{
+       return 0;
+}
+#endif
+
+#define DEFINEPARSER(NAME) static struct pf_key_ext_parsers_def NAME##_def={NAME, #NAME};
+
+DEFINEPARSER(pfkey_sa_parse);
+DEFINEPARSER(pfkey_lifetime_parse);
+DEFINEPARSER(pfkey_address_parse);
+DEFINEPARSER(pfkey_key_parse);
+DEFINEPARSER(pfkey_ident_parse);
+DEFINEPARSER(pfkey_sens_parse);
+DEFINEPARSER(pfkey_prop_parse);
+DEFINEPARSER(pfkey_supported_parse);
+DEFINEPARSER(pfkey_spirange_parse);
+DEFINEPARSER(pfkey_x_kmprivate_parse);
+DEFINEPARSER(pfkey_x_satype_parse);
+DEFINEPARSER(pfkey_x_ext_debug_parse);
+DEFINEPARSER(pfkey_x_ext_protocol_parse);
+#ifdef NAT_TRAVERSAL
+DEFINEPARSER(pfkey_x_ext_nat_t_type_parse);
+DEFINEPARSER(pfkey_x_ext_nat_t_port_parse);
+#endif
+
+struct pf_key_ext_parsers_def *ext_default_parsers[]=
+{
+       NULL,                 /* pfkey_msg_parse, */
+       &pfkey_sa_parse_def,
+       &pfkey_lifetime_parse_def,
+       &pfkey_lifetime_parse_def,
+       &pfkey_lifetime_parse_def,
+       &pfkey_address_parse_def,
+       &pfkey_address_parse_def,
+       &pfkey_address_parse_def,
+       &pfkey_key_parse_def,
+       &pfkey_key_parse_def,
+       &pfkey_ident_parse_def,
+       &pfkey_ident_parse_def,
+       &pfkey_sens_parse_def,
+       &pfkey_prop_parse_def,
+       &pfkey_supported_parse_def,
+       &pfkey_supported_parse_def,
+       &pfkey_spirange_parse_def,
+       &pfkey_x_kmprivate_parse_def,
+       &pfkey_x_satype_parse_def,
+       &pfkey_sa_parse_def,
+       &pfkey_address_parse_def,
+       &pfkey_address_parse_def,
+       &pfkey_address_parse_def,
+       &pfkey_address_parse_def,
+       &pfkey_address_parse_def,
+       &pfkey_x_ext_debug_parse_def,
+       &pfkey_x_ext_protocol_parse_def
+#ifdef NAT_TRAVERSAL
+       ,
+       &pfkey_x_ext_nat_t_type_parse_def,
+       &pfkey_x_ext_nat_t_port_parse_def,
+       &pfkey_x_ext_nat_t_port_parse_def,
+       &pfkey_address_parse_def
+#endif
+};
+
+int
+pfkey_msg_parse(struct sadb_msg *pfkey_msg,
+               struct pf_key_ext_parsers_def *ext_parsers[],
+               struct sadb_ext *extensions[],
+               int dir)
+{
+       int error = 0;
+       int remain;
+       struct sadb_ext *pfkey_ext;
+       int extensions_seen = 0;
+       
+       DEBUGGING(PF_KEY_DEBUG_PARSE_STRUCT,
+                 "pfkey_msg_parse: "
+                 "parsing message ver=%d, type=%d(%s), errno=%d, satype=%d(%s), len=%d, res=%d, seq=%d, pid=%d.\n", 
+                 pfkey_msg->sadb_msg_version,
+                 pfkey_msg->sadb_msg_type,
+                 pfkey_v2_sadb_type_string(pfkey_msg->sadb_msg_type),
+                 pfkey_msg->sadb_msg_errno,
+                 pfkey_msg->sadb_msg_satype,
+                 satype2name(pfkey_msg->sadb_msg_satype),
+                 pfkey_msg->sadb_msg_len,
+                 pfkey_msg->sadb_msg_reserved,
+                 pfkey_msg->sadb_msg_seq,
+                 pfkey_msg->sadb_msg_pid);
+       
+       if(ext_parsers == NULL) ext_parsers = ext_default_parsers;
+       
+       pfkey_extensions_init(extensions);
+       
+       remain = pfkey_msg->sadb_msg_len;
+       remain -= sizeof(struct sadb_msg) / IPSEC_PFKEYv2_ALIGN;
+       
+       pfkey_ext = (struct sadb_ext*)((char*)pfkey_msg +
+                                      sizeof(struct sadb_msg));
+       
+       extensions[0] = (struct sadb_ext *) pfkey_msg;
+       
+       
+       if(pfkey_msg->sadb_msg_version != PF_KEY_V2) {
+               ERROR("pfkey_msg_parse: "
+                       "not PF_KEY_V2 msg, found %d, should be %d.\n",
+                       pfkey_msg->sadb_msg_version,
+                       PF_KEY_V2);
+               SENDERR(EINVAL);
+       }
+
+       if(!pfkey_msg->sadb_msg_type) {
+               ERROR("pfkey_msg_parse: "
+                       "msg type not set, must be non-zero..\n");
+               SENDERR(EINVAL);
+       }
+
+       if(pfkey_msg->sadb_msg_type > SADB_MAX) {
+               ERROR("pfkey_msg_parse: "
+                       "msg type=%d > max=%d.\n",
+                       pfkey_msg->sadb_msg_type,
+                       SADB_MAX);
+               SENDERR(EINVAL);
+       }
+
+       switch(pfkey_msg->sadb_msg_type) {
+       case SADB_GETSPI:
+       case SADB_UPDATE:
+       case SADB_ADD:
+       case SADB_DELETE:
+       case SADB_GET:
+       case SADB_X_GRPSA:
+       case SADB_X_ADDFLOW:
+               if(!satype2proto(pfkey_msg->sadb_msg_satype)) {
+                       ERROR("pfkey_msg_parse: "
+                                 "satype %d conversion to proto failed for msg_type %d (%s).\n",
+                                 pfkey_msg->sadb_msg_satype,
+                                 pfkey_msg->sadb_msg_type,
+                                 pfkey_v2_sadb_type_string(pfkey_msg->sadb_msg_type));
+                       SENDERR(EINVAL);
+               } else {
+                       DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                                 "pfkey_msg_parse: "
+                                 "satype %d(%s) conversion to proto gives %d for msg_type %d(%s).\n",
+                                 pfkey_msg->sadb_msg_satype,
+                                 satype2name(pfkey_msg->sadb_msg_satype),
+                                 satype2proto(pfkey_msg->sadb_msg_satype),
+                                 pfkey_msg->sadb_msg_type,
+                                 pfkey_v2_sadb_type_string(pfkey_msg->sadb_msg_type));
+               }
+       case SADB_ACQUIRE:
+       case SADB_REGISTER:
+       case SADB_EXPIRE:
+               if(!pfkey_msg->sadb_msg_satype) {
+                       DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                                 "pfkey_msg_parse: "
+                                 "satype is zero, must be non-zero for msg_type %d(%s).\n",
+                                 pfkey_msg->sadb_msg_type,
+                                 pfkey_v2_sadb_type_string(pfkey_msg->sadb_msg_type));
+                       SENDERR(EINVAL);
+               }
+       default:
+               break;
+       }
+       
+       /* errno must not be set in downward messages */
+       /* this is not entirely true... a response to an ACQUIRE could return an error */
+       if((dir == EXT_BITS_IN) && (pfkey_msg->sadb_msg_type != SADB_ACQUIRE) && pfkey_msg->sadb_msg_errno) {
+               DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                           "pfkey_msg_parse: "
+                           "errno set to %d.\n",
+                           pfkey_msg->sadb_msg_errno);
+               SENDERR(EINVAL);
+       }
+
+       DEBUGGING(PF_KEY_DEBUG_PARSE_FLOW,
+                 "pfkey_msg_parse: "
+                 "remain=%d\n", 
+                 remain
+                 );
+
+       DEBUGGING(PF_KEY_DEBUG_PARSE_FLOW,
+               "pfkey_msg_parse: "
+               "extensions permitted=%08x, required=%08x.\n",
+               extensions_bitmaps[dir][EXT_BITS_PERM][pfkey_msg->sadb_msg_type],
+               extensions_bitmaps[dir][EXT_BITS_REQ][pfkey_msg->sadb_msg_type]);
+       
+       extensions_seen = 1;
+       
+       while( (remain * IPSEC_PFKEYv2_ALIGN) >= sizeof(struct sadb_ext) ) {
+               /* Is there enough message left to support another extension header? */
+               if(remain < pfkey_ext->sadb_ext_len) {
+                       DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                               "pfkey_msg_parse: "
+                               "remain %d less than ext len %d.\n", 
+                               remain, pfkey_ext->sadb_ext_len);
+                       SENDERR(EINVAL);
+               }
+               
+               DEBUGGING(PF_KEY_DEBUG_PARSE_FLOW,
+                       "pfkey_msg_parse: "
+                       "parsing ext type=%d(%s) remain=%d.\n",
+                       pfkey_ext->sadb_ext_type,
+                       pfkey_v2_sadb_ext_string(pfkey_ext->sadb_ext_type),
+                       remain);
+               
+               /* Is the extension header type valid? */
+               if((pfkey_ext->sadb_ext_type > SADB_EXT_MAX) || (!pfkey_ext->sadb_ext_type)) {
+                       DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                               "pfkey_msg_parse: "
+                               "ext type %d(%s) invalid, SADB_EXT_MAX=%d.\n", 
+                               pfkey_ext->sadb_ext_type,
+                               pfkey_v2_sadb_ext_string(pfkey_ext->sadb_ext_type),
+                               SADB_EXT_MAX);
+                       SENDERR(EINVAL);
+               }
+               
+               /* Have we already seen this type of extension? */
+               if((extensions_seen & ( 1 << pfkey_ext->sadb_ext_type )) != 0)
+               {
+                       DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                               "pfkey_msg_parse: "
+                               "ext type %d(%s) already seen.\n", 
+                               pfkey_ext->sadb_ext_type,
+                               pfkey_v2_sadb_ext_string(pfkey_ext->sadb_ext_type));
+                       SENDERR(EINVAL);
+               }
+
+               /* Do I even know about this type of extension? */
+               if(ext_parsers[pfkey_ext->sadb_ext_type]==NULL) {
+                       ERROR("pfkey_msg_parse: "
+                               "ext type %d(%s) unknown, ignoring.\n", 
+                               pfkey_ext->sadb_ext_type,
+                               pfkey_v2_sadb_ext_string(pfkey_ext->sadb_ext_type));
+                       goto next_ext;
+               }
+
+               /* Is this type of extension permitted for this type of message? */
+               if(!(extensions_bitmaps[dir][EXT_BITS_PERM][pfkey_msg->sadb_msg_type] &
+                    1<<pfkey_ext->sadb_ext_type)) {
+                       DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                               "pfkey_msg_parse: "
+                               "ext type %d(%s) not permitted, exts_perm_in=%08x, 1<<type=%08x\n", 
+                               pfkey_ext->sadb_ext_type, 
+                               pfkey_v2_sadb_ext_string(pfkey_ext->sadb_ext_type),
+                               extensions_bitmaps[dir][EXT_BITS_PERM][pfkey_msg->sadb_msg_type],
+                               1<<pfkey_ext->sadb_ext_type);
+                       SENDERR(EINVAL);
+               }
+
+               DEBUGGING(PF_KEY_DEBUG_PARSE_STRUCT,
+                         "pfkey_msg_parse: "
+                         "remain=%d ext_type=%d(%s) ext_len=%d parsing ext 0p%p with parser %s.\n",
+                         remain,
+                         pfkey_ext->sadb_ext_type,
+                         pfkey_v2_sadb_ext_string(pfkey_ext->sadb_ext_type),
+                         pfkey_ext->sadb_ext_len,
+                         pfkey_ext,
+                         ext_parsers[pfkey_ext->sadb_ext_type]->parser_name);
+               
+               /* Parse the extension */
+               if((error =
+                   (*ext_parsers[pfkey_ext->sadb_ext_type]->parser)(pfkey_ext))) {
+                       DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                               "pfkey_msg_parse: "
+                               "extension parsing for type %d(%s) failed with error %d.\n",
+                               pfkey_ext->sadb_ext_type,
+                               pfkey_v2_sadb_ext_string(pfkey_ext->sadb_ext_type),
+                               error); 
+                       SENDERR(-error);
+               }
+               DEBUGGING(PF_KEY_DEBUG_PARSE_FLOW,
+                       "pfkey_msg_parse: "
+                       "Extension %d(%s) parsed.\n",
+                       pfkey_ext->sadb_ext_type,
+                       pfkey_v2_sadb_ext_string(pfkey_ext->sadb_ext_type));
+               
+               /* Mark that we have seen this extension and remember the header location */
+               extensions_seen |= ( 1 << pfkey_ext->sadb_ext_type );
+               extensions[pfkey_ext->sadb_ext_type] = pfkey_ext;
+
+       next_ext:               
+               /* Calculate how much message remains */
+               remain -= pfkey_ext->sadb_ext_len;
+
+               if(!remain) {
+                       break;
+               }
+               /* Find the next extension header */
+               pfkey_ext = (struct sadb_ext*)((char*)pfkey_ext +
+                       pfkey_ext->sadb_ext_len * IPSEC_PFKEYv2_ALIGN);
+       }
+
+       if(remain) {
+               DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                       "pfkey_msg_parse: "
+                       "unexpected remainder of %d.\n", 
+                       remain);
+               /* why is there still something remaining? */
+               SENDERR(EINVAL);
+       }
+
+       /* check required extensions */
+       DEBUGGING(PF_KEY_DEBUG_PARSE_STRUCT,
+               "pfkey_msg_parse: "
+               "extensions permitted=%08x, seen=%08x, required=%08x.\n",
+               extensions_bitmaps[dir][EXT_BITS_PERM][pfkey_msg->sadb_msg_type],
+               extensions_seen,
+               extensions_bitmaps[dir][EXT_BITS_REQ][pfkey_msg->sadb_msg_type]);
+
+       /* don't check further if it is an error return message since it
+          may not have a body */
+       if(pfkey_msg->sadb_msg_errno) {
+               SENDERR(-error);
+       }
+
+       if((extensions_seen &
+           extensions_bitmaps[dir][EXT_BITS_REQ][pfkey_msg->sadb_msg_type]) !=
+          extensions_bitmaps[dir][EXT_BITS_REQ][pfkey_msg->sadb_msg_type]) {
+               DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                       "pfkey_msg_parse: "
+                       "required extensions missing:%08x.\n",
+                       extensions_bitmaps[dir][EXT_BITS_REQ][pfkey_msg->sadb_msg_type] -
+                       (extensions_seen &
+                        extensions_bitmaps[dir][EXT_BITS_REQ][pfkey_msg->sadb_msg_type]));
+               SENDERR(EINVAL);
+       }
+       
+       if((dir == EXT_BITS_IN) && (pfkey_msg->sadb_msg_type == SADB_X_DELFLOW)
+          && ((extensions_seen & SADB_X_EXT_ADDRESS_DELFLOW)
+              != SADB_X_EXT_ADDRESS_DELFLOW)
+          && (((extensions_seen & (1<<SADB_EXT_SA)) != (1<<SADB_EXT_SA))
+          || ((((struct sadb_sa*)extensions[SADB_EXT_SA])->sadb_sa_flags
+               & SADB_X_SAFLAGS_CLEARFLOW)
+              != SADB_X_SAFLAGS_CLEARFLOW))) {
+               DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                       "pfkey_msg_parse: "
+                       "required SADB_X_DELFLOW extensions missing: either %08x must be present or %08x must be present with SADB_X_SAFLAGS_CLEARFLOW set.\n",
+                       SADB_X_EXT_ADDRESS_DELFLOW
+                       - (extensions_seen & SADB_X_EXT_ADDRESS_DELFLOW),
+                       (1<<SADB_EXT_SA) - (extensions_seen & (1<<SADB_EXT_SA)));
+               SENDERR(EINVAL);
+       }
+       
+       switch(pfkey_msg->sadb_msg_type) {
+       case SADB_ADD:
+       case SADB_UPDATE:
+               /* check maturity */
+               if(((struct sadb_sa*)extensions[SADB_EXT_SA])->sadb_sa_state !=
+                  SADB_SASTATE_MATURE) {
+                       DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                               "pfkey_msg_parse: "
+                               "state=%d for add or update should be MATURE=%d.\n",
+                               ((struct sadb_sa*)extensions[SADB_EXT_SA])->sadb_sa_state,
+                               SADB_SASTATE_MATURE);
+                       SENDERR(EINVAL);
+               }
+               
+               /* check AH and ESP */
+               switch(((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_satype) {
+               case SADB_SATYPE_AH:
+                       if(!(((struct sadb_sa*)extensions[SADB_EXT_SA]) &&
+                            ((struct sadb_sa*)extensions[SADB_EXT_SA])->sadb_sa_auth !=
+                            SADB_AALG_NONE)) {
+                               DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                                       "pfkey_msg_parse: "
+                                       "auth alg is zero, must be non-zero for AH SAs.\n");
+                               SENDERR(EINVAL);
+                       }
+                       if(((struct sadb_sa*)(extensions[SADB_EXT_SA]))->sadb_sa_encrypt !=
+                          SADB_EALG_NONE) {
+                               DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                                       "pfkey_msg_parse: "
+                                       "AH handed encalg=%d, must be zero.\n",
+                                       ((struct sadb_sa*)(extensions[SADB_EXT_SA]))->sadb_sa_encrypt);
+                               SENDERR(EINVAL);
+                       }
+                       break;
+               case SADB_SATYPE_ESP:
+                       if(!(((struct sadb_sa*)extensions[SADB_EXT_SA]) &&
+                            ((struct sadb_sa*)extensions[SADB_EXT_SA])->sadb_sa_encrypt !=
+                            SADB_EALG_NONE)) {
+                               DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                                       "pfkey_msg_parse: "
+                                       "encrypt alg=%d is zero, must be non-zero for ESP=%d SAs.\n",
+                                       ((struct sadb_sa*)extensions[SADB_EXT_SA])->sadb_sa_encrypt,
+                                       ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_satype);
+                               SENDERR(EINVAL);
+                       }
+                       if((((struct sadb_sa*)(extensions[SADB_EXT_SA]))->sadb_sa_encrypt ==
+                           SADB_EALG_NULL) &&
+                          (((struct sadb_sa*)(extensions[SADB_EXT_SA]))->sadb_sa_auth ==
+                           SADB_AALG_NONE) ) {
+                               DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                                       "pfkey_msg_parse: "
+                                       "ESP handed encNULL+authNONE, illegal combination.\n");
+                               SENDERR(EINVAL);
+                       }
+                       break;
+               case SADB_X_SATYPE_COMP:
+                       if(!(((struct sadb_sa*)extensions[SADB_EXT_SA]) &&
+                            ((struct sadb_sa*)extensions[SADB_EXT_SA])->sadb_sa_encrypt !=
+                            SADB_EALG_NONE)) {
+                               DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                                       "pfkey_msg_parse: "
+                                       "encrypt alg=%d is zero, must be non-zero for COMP=%d SAs.\n",
+                                       ((struct sadb_sa*)extensions[SADB_EXT_SA])->sadb_sa_encrypt,
+                                       ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_satype);
+                               SENDERR(EINVAL);
+                       }
+                       if(((struct sadb_sa*)(extensions[SADB_EXT_SA]))->sadb_sa_auth !=
+                          SADB_AALG_NONE) {
+                               DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                                       "pfkey_msg_parse: "
+                                       "COMP handed auth=%d, must be zero.\n",
+                                       ((struct sadb_sa*)(extensions[SADB_EXT_SA]))->sadb_sa_auth);
+                               SENDERR(EINVAL);
+                       }
+                       break;
+               default:
+                       break;
+               }
+               if(ntohl(((struct sadb_sa*)(extensions[SADB_EXT_SA]))->sadb_sa_spi) <= 255) {
+                       DEBUGGING(PF_KEY_DEBUG_PARSE_PROBLEM,
+                               "pfkey_msg_parse: "
+                               "spi=%08x must be > 255.\n",
+                               ntohl(((struct sadb_sa*)(extensions[SADB_EXT_SA]))->sadb_sa_spi));
+                       SENDERR(EINVAL);
+               }
+       default:        
+               break;
+       }
+errlab:
+
+       return error;
+}
+
+/*
+ * $Log: pfkey_v2_parse.c,v $
+ * Revision 1.65  2005-04-06 17:46:05  mcr
+ *     failure to recognize an extension is considered an error.
+ *     This could be a problem in the future, but we need some kind
+ *     of logging. This should be rate limited, probably.
+ *
+ * Revision 1.64  2005/01/26 00:50:35  mcr
+ *     adjustment of confusion of CONFIG_IPSEC_NAT vs CONFIG_KLIPS_NAT,
+ *     and make sure that NAT_TRAVERSAL is set as well to match
+ *     userspace compiles of code.
+ *
+ * Revision 1.63  2004/10/28 22:54:10  mcr
+ *     results from valgrind, thanks to: Harald Hoyer <harald@redhat.com>
+ *
+ * Revision 1.62  2004/10/03 01:26:36  mcr
+ *     fixes for gcc 3.4 compilation.
+ *
+ * Revision 1.61  2004/07/10 19:11:18  mcr
+ *     CONFIG_IPSEC -> CONFIG_KLIPS.
+ *
+ * Revision 1.59  2004/04/18 03:03:49  mcr
+ *     renamed common include files from pluto directory.
+ *
+ * Revision 1.58  2004/03/08 01:59:08  ken
+ * freeswan.h -> openswan.h
+ *
+ * Revision 1.57  2003/12/10 01:20:19  mcr
+ *     NAT-traversal patches to KLIPS.
+ *
+ * Revision 1.56  2003/12/04 23:01:12  mcr
+ *     removed ipsec_netlink.h
+ *
+ * Revision 1.55  2003/11/07 01:30:37  ken
+ * Cast sizeof() to int to keep things 64bit clean
+ *
+ * Revision 1.54  2003/10/31 02:27:12  mcr
+ *     pulled up port-selector patches and sa_id elimination.
+ *
+ * Revision 1.53.20.2  2003/10/29 01:11:32  mcr
+ *     added debugging for pfkey library.
+ *
+ * Revision 1.53.20.1  2003/09/21 13:59:44  mcr
+ *     pre-liminary X.509 patch - does not yet pass tests.
+ *
+ * Revision 1.53  2003/01/30 02:32:09  rgb
+ *
+ * Rename SAref table macro names for clarity.
+ * Convert IPsecSAref_t from signed to unsigned to fix apparent SAref exhaustion bug.
+ *
+ * Revision 1.52  2002/12/30 06:53:07  mcr
+ *     deal with short SA structures... #if 0 out for now. Probably
+ *     not quite the right way.
+ *
+ * Revision 1.51  2002/12/13 18:16:02  mcr
+ *     restored sa_ref code
+ *
+ * Revision 1.50  2002/12/13 18:06:52  mcr
+ *     temporarily removed sadb_x_sa_ref reference for 2.xx
+ *
+ * Revision 1.49  2002/10/05 05:02:58  dhr
+ *
+ * C labels go on statements
+ *
+ * Revision 1.48  2002/09/20 15:40:45  rgb
+ * Added sadb_x_sa_ref to struct sadb_sa.
+ *
+ * Revision 1.47  2002/09/20 05:01:31  rgb
+ * Fixed usage of pfkey_lib_debug.
+ * Format for function declaration style consistency.
+ * Added text labels to elucidate numeric values presented.
+ * Re-organised debug output to reduce noise in output.
+ *
+ * Revision 1.46  2002/07/24 18:44:54  rgb
+ * Type fiddling to tame ia64 compiler.
+ *
+ * Revision 1.45  2002/05/23 07:14:11  rgb
+ * Cleaned up %p variants to 0p%p for test suite cleanup.
+ *
+ * Revision 1.44  2002/04/24 07:55:32  mcr
+ *     #include patches and Makefiles for post-reorg compilation.
+ *
+ * Revision 1.43  2002/04/24 07:36:40  mcr
+ * Moved from ./lib/pfkey_v2_parse.c,v
+ *
+ * Revision 1.42  2002/01/29 22:25:36  rgb
+ * Re-add ipsec_kversion.h to keep MALLOC happy.
+ *
+ * Revision 1.41  2002/01/29 01:59:10  mcr
+ *     removal of kversions.h - sources that needed it now use ipsec_param.h.
+ *     updating of IPv6 structures to match latest in6.h version.
+ *     removed dead code from openswan.h that also duplicated kversions.h
+ *     code.
+ *
+ * Revision 1.40  2002/01/20 20:34:50  mcr
+ *     added pfkey_v2_sadb_type_string to decode sadb_type to string.
+ *
+ * Revision 1.39  2001/11/27 05:29:22  mcr
+ *     pfkey parses are now maintained by a structure
+ *     that includes their name for debug purposes.
+ *     DEBUGGING() macro changed so that it takes a debug
+ *     level so that pf_key() can use this to decode the
+ *     structures without innundanting humans.
+ *     Also uses pfkey_v2_sadb_ext_string() in messages.
+ *
+ * Revision 1.38  2001/11/06 19:47:47  rgb
+ * Added packet parameter to lifetime and comb structures.
+ *
+ * Revision 1.37  2001/10/18 04:45:24  rgb
+ * 2.4.9 kernel deprecates linux/malloc.h in favour of linux/slab.h,
+ * lib/openswan.h version macros moved to lib/kversions.h.
+ * Other compiler directive cleanups.
+ *
+ * Revision 1.36  2001/06/14 19:35:16  rgb
+ * Update copyright date.
+ *
+ * Revision 1.35  2001/05/03 19:44:51  rgb
+ * Standardise on SENDERR() macro.
+ *
+ * Revision 1.34  2001/03/16 07:41:51  rgb
+ * Put openswan.h include before pluto includes.
+ *
+ * Revision 1.33  2001/02/27 07:13:51  rgb
+ * Added satype2name() function.
+ * Added text to default satype_tbl entry.
+ * Added satype2name() conversions for most satype debug output.
+ *
+ * Revision 1.32  2001/02/26 20:01:09  rgb
+ * Added internal IP protocol 61 for magic SAs.
+ * Ditch unused sadb_satype2proto[], replaced by satype2proto().
+ * Re-formatted debug output (split lines, consistent spacing).
+ * Removed acquire, register and expire requirements for a known satype.
+ * Changed message type checking to a switch structure.
+ * Verify expected NULL auth for IPCOMP.
+ * Enforced spi > 0x100 requirement, now that pass uses a magic SA for
+ * appropriate message types.
+ *
+ * Revision 1.31  2000/12/01 07:09:00  rgb
+ * Added ipcomp sanity check to require encalgo is set.
+ *
+ * Revision 1.30  2000/11/17 18:10:30  rgb
+ * Fixed bugs mostly relating to spirange, to treat all spi variables as
+ * network byte order since this is the way PF_KEYv2 stored spis.
+ *
+ * Revision 1.29  2000/10/12 00:02:39  rgb
+ * Removed 'format, ##' nonsense from debug macros for RH7.0.
+ *
+ * Revision 1.28  2000/09/20 16:23:04  rgb
+ * Remove over-paranoid extension check in the presence of sadb_msg_errno.
+ *
+ * Revision 1.27  2000/09/20 04:04:21  rgb
+ * Changed static functions to DEBUG_NO_STATIC to reveal function names in
+ * oopsen.
+ *
+ * Revision 1.26  2000/09/15 11:37:02  rgb
+ * Merge in heavily modified Svenning Soerensen's <svenning@post5.tele.dk>
+ * IPCOMP zlib deflate code.
+ *
+ * Revision 1.25  2000/09/12 22:35:37  rgb
+ * Restructured to remove unused extensions from CLEARFLOW messages.
+ *
+ * Revision 1.24  2000/09/12 18:59:54  rgb
+ * Added Gerhard's IPv6 support to pfkey parts of libopenswan.
+ *
+ * Revision 1.23  2000/09/12 03:27:00  rgb
+ * Moved DEBUGGING definition to compile kernel with debug off.
+ *
+ * Revision 1.22  2000/09/09 06:39:27  rgb
+ * Restrict pfkey errno check to downward messages only.
+ *
+ * Revision 1.21  2000/09/08 19:22:34  rgb
+ * Enabled pfkey_sens_parse().
+ * Added check for errno on downward acquire messages only.
+ *
+ * Revision 1.20  2000/09/01 18:48:23  rgb
+ * Fixed reserved check bug and added debug output in
+ * pfkey_supported_parse().
+ * Fixed debug output label bug in pfkey_ident_parse().
+ *
+ * Revision 1.19  2000/08/27 01:55:26  rgb
+ * Define OCTETBITS and PFKEYBITS to avoid using 'magic' numbers in code.
+ *
+ * Revision 1.18  2000/08/24 17:00:36  rgb
+ * Ignore unknown extensions instead of failing.
+ *
+ * Revision 1.17  2000/06/02 22:54:14  rgb
+ * Added Gerhard Gessler's struct sockaddr_storage mods for IPv6 support.
+ *
+ * Revision 1.16  2000/05/10 19:25:11  rgb
+ * Fleshed out proposal and supported extensions.
+ *
+ * Revision 1.15  2000/01/24 21:15:31  rgb
+ * Added disabled pluto pfkey lib debug flag.
+ * Added algo debugging reporting.
+ *
+ * Revision 1.14  2000/01/22 23:24:29  rgb
+ * Added new functions proto2satype() and satype2proto() and lookup
+ * table satype_tbl.  Also added proto2name() since it was easy.
+ *
+ * Revision 1.13  2000/01/21 09:43:59  rgb
+ * Cast ntohl(spi) as (unsigned long int) to shut up compiler.
+ *
+ * Revision 1.12  2000/01/21 06:28:19  rgb
+ * Added address cases for eroute flows.
+ * Indented compiler directives for readability.
+ * Added klipsdebug switching capability.
+ *
+ * Revision 1.11  1999/12/29 21:14:59  rgb
+ * Fixed debug text cut and paste typo.
+ *
+ * Revision 1.10  1999/12/10 17:45:24  rgb
+ * Added address debugging.
+ *
+ * Revision 1.9  1999/12/09 23:11:42  rgb
+ * Ditched <string.h> include since we no longer use memset().
+ * Use new pfkey_extensions_init() instead of memset().
+ * Added check for SATYPE in pfkey_msg_build().
+ * Tidy up comments and debugging comments.
+ *
+ * Revision 1.8  1999/12/07 19:55:26  rgb
+ * Removed unused first argument from extension parsers.
+ * Removed static pluto debug flag.
+ * Moved message type and state checking to pfkey_msg_parse().
+ * Changed print[fk] type from lx to x to quiet compiler.
+ * Removed redundant remain check.
+ * Changed __u* types to uint* to avoid use of asm/types.h and
+ * sys/types.h in userspace code.
+ *
+ * Revision 1.7  1999/12/01 22:20:51  rgb
+ * Moved pfkey_lib_debug variable into the library.
+ * Added pfkey version check into header parsing.
+ * Added check for SATYPE only for those extensions that require a
+ * non-zero value.
+ *
+ * Revision 1.6  1999/11/27 11:58:05  rgb
+ * Added ipv6 headers.
+ * Moved sadb_satype2proto protocol lookup table from
+ * klips/net/ipsec/pfkey_v2_parser.c.
+ * Enable lifetime_current checking.
+ * Debugging error messages added.
+ * Add argument to pfkey_msg_parse() for direction.
+ * Consolidated the 4 1-d extension bitmap arrays into one 4-d array.
+ * Add CVS log entry to bottom of file.
+ * Moved auth and enc alg check to pfkey_msg_parse().
+ * Enable accidentally disabled spirange parsing.
+ * Moved protocol/algorithm checks from klips/net/ipsec/pfkey_v2_parser.c
+ *
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ *
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/pfkey_v2_parser.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,3529 @@
+/*
+ * @(#) RFC2367 PF_KEYv2 Key management API message parser
+ * Copyright (C) 1999, 2000, 2001  Richard Guy Briggs <rgb@freeswan.org>
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id: pfkey_v2_parser.c,v 1.134.2.4 2007-10-30 21:40:36 paul Exp $
+ */
+
+/*
+ *             Template from klips/net/ipsec/ipsec/ipsec_netlink.c.
+ */
+
+char pfkey_v2_parser_c_version[] = "$Id: pfkey_v2_parser.c,v 1.134.2.4 2007-10-30 21:40:36 paul Exp $";
+
+#ifndef AUTOCONF_INCLUDED
+#include <linux/config.h>
+#endif
+#include <linux/version.h>
+#include <linux/kernel.h> /* printk() */
+
+#include "openswan/ipsec_param.h"
+
+#ifdef MALLOC_SLAB
+# include <linux/slab.h> /* kmalloc() */
+#else /* MALLOC_SLAB */
+# include <linux/malloc.h> /* kmalloc() */
+#endif /* MALLOC_SLAB */
+#include <linux/errno.h>  /* error codes */
+#include <linux/types.h>  /* size_t */
+#include <linux/interrupt.h> /* mark_bh */
+
+#include <linux/netdevice.h>   /* struct device, and other headers */
+#include <linux/etherdevice.h> /* eth_type_trans */
+#include <linux/ip.h>          /* struct iphdr */
+#include <linux/skbuff.h>
+
+#include <openswan.h>
+
+#include <crypto/des.h>
+
+#ifdef SPINLOCK
+# ifdef SPINLOCK_23
+#  include <linux/spinlock.h> /* *lock* */
+# else /* SPINLOCK_23 */
+#  include <asm/spinlock.h> /* *lock* */
+# endif /* SPINLOCK_23 */
+#endif /* SPINLOCK */
+
+#include <linux/in6.h>
+#include <net/route.h>
+
+#include <net/ip.h>
+#ifdef NETLINK_SOCK
+# include <linux/netlink.h>
+#else
+# include <net/netlink.h>
+#endif
+
+#include <linux/random.h>      /* get_random_bytes() */
+
+#include "openswan/radij.h"
+#include "openswan/ipsec_encap.h"
+#include "openswan/ipsec_sa.h"
+
+#include "openswan/ipsec_radij.h"
+#include "openswan/ipsec_xform.h"
+#include "openswan/ipsec_ah.h"
+#include "openswan/ipsec_esp.h"
+#include "openswan/ipsec_tunnel.h"
+#include "openswan/ipsec_rcv.h"
+#include "openswan/ipcomp.h"
+
+#include <pfkeyv2.h>
+#include <pfkey.h>
+
+#include "openswan/ipsec_proto.h"
+#include "openswan/ipsec_alg.h"
+
+#include "openswan/ipsec_kern24.h"
+
+#define SENDERR(_x) do { error = -(_x); goto errlab; } while (0)
+
+struct sklist_t {
+       struct socket *sk;
+       struct sklist_t* next;
+} pfkey_sklist_head, *pfkey_sklist, *pfkey_sklist_prev;
+
+__u32 pfkey_msg_seq = 0;
+
+
+#if 0
+#define DUMP_SAID dump_said(&extr->ips->ips_said, __LINE__)
+#define DUMP_SAID2 dump_said(&extr.ips->ips_said, __LINE__)
+static void dump_said(ip_said *s, int line)
+{ 
+       char msa[SATOT_BUF];
+       size_t msa_len;
+       
+       msa_len = satot(s, 0, msa, sizeof(msa));
+       
+       printk("line: %d msa: %s\n", line, msa);
+}
+#endif
+
+
+int
+pfkey_alloc_eroute(struct eroute** eroute)
+{
+       int error = 0;
+       if(*eroute) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_alloc_eroute: "
+                           "eroute struct already allocated\n");
+               SENDERR(EEXIST);
+       }
+
+       if((*eroute = kmalloc(sizeof(**eroute), GFP_ATOMIC) ) == NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_alloc_eroute: "
+                           "memory allocation error\n");
+               SENDERR(ENOMEM);
+       }
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_alloc_eroute: "
+                   "allocating %lu bytes for an eroute at 0p%p\n",
+                   (unsigned long) sizeof(**eroute), *eroute);
+
+       memset((caddr_t)*eroute, 0, sizeof(**eroute));
+       (*eroute)->er_eaddr.sen_len =
+               (*eroute)->er_emask.sen_len = sizeof(struct sockaddr_encap);
+       (*eroute)->er_eaddr.sen_family =
+               (*eroute)->er_emask.sen_family = AF_ENCAP;
+       (*eroute)->er_eaddr.sen_type = SENT_IP4;
+       (*eroute)->er_emask.sen_type = 255;
+       (*eroute)->er_pid = 0;
+       (*eroute)->er_count = 0;
+       (*eroute)->er_lasttime = jiffies/HZ;
+
+ errlab:
+       return(error);
+}
+
+DEBUG_NO_STATIC int
+pfkey_x_protocol_process(struct sadb_ext *pfkey_ext,
+                        struct pfkey_extracted_data *extr)
+{
+       int error = 0;
+       struct sadb_protocol * p = (struct sadb_protocol *)pfkey_ext;
+
+       KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_x_protocol_process: %p\n", extr);
+
+       if (extr == 0) {
+               KLIPS_PRINT(debug_pfkey,
+                         "klips_debug:pfkey_x_protocol_process:"
+                           "extr is NULL, fatal\n");
+               SENDERR(EINVAL);
+       }
+       if (extr->eroute == 0) {
+               KLIPS_PRINT(debug_pfkey,
+                        "klips_debug:pfkey_x_protocol_process:"
+                           "extr->eroute is NULL, fatal\n");
+               SENDERR(EINVAL);
+       }
+
+       extr->eroute->er_eaddr.sen_proto = p->sadb_protocol_proto;
+       extr->eroute->er_emask.sen_proto = p->sadb_protocol_proto ? ~0:0;
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_x_protocol_process: protocol = %d.\n",
+                   p->sadb_protocol_proto);
+ errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_ipsec_sa_init(struct ipsec_sa *ipsp)
+{
+
+       return ipsec_sa_init(ipsp);
+}
+
+int
+pfkey_safe_build(int error, struct sadb_ext *extensions[SADB_MAX+1])
+{
+       KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_safe_build: "
+                   "error=%d\n",
+                   error);
+       if (!error) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_safe_build:"
+                           "success.\n");
+               return 1;
+       } else {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_safe_build:"
+                           "caught error %d\n",
+                           error);
+               pfkey_extensions_free(extensions);
+               return 0;
+       }
+}
+
+
+DEBUG_NO_STATIC int
+pfkey_getspi_parse(struct sock *sk, struct sadb_ext **extensions, struct pfkey_extracted_data* extr)
+{
+       int error = 0;
+       ipsec_spi_t minspi = htonl(256), maxspi = htonl(-1L);
+       int found_avail = 0;
+       struct ipsec_sa *ipsq;
+       char sa[SATOT_BUF];
+       size_t sa_len;
+       struct sadb_ext *extensions_reply[SADB_EXT_MAX+1];
+       struct sadb_msg *pfkey_reply = NULL;
+       struct socket_list *pfkey_socketsp;
+       uint8_t satype = ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_satype;
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_getspi_parse: .\n");
+
+       pfkey_extensions_init(extensions_reply);
+
+       if(extr == NULL || extr->ips == NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_getspi_parse: "
+                           "error, extr or extr->ipsec_sa pointer NULL\n");
+               SENDERR(EINVAL);
+       }
+
+       if(extensions[SADB_EXT_SPIRANGE]) {
+               minspi = ((struct sadb_spirange *)extensions[SADB_EXT_SPIRANGE])->sadb_spirange_min;
+               maxspi = ((struct sadb_spirange *)extensions[SADB_EXT_SPIRANGE])->sadb_spirange_max;
+       }
+
+       if(maxspi == minspi) {
+               extr->ips->ips_said.spi = maxspi;
+               ipsq = ipsec_sa_getbyid(&(extr->ips->ips_said));
+               if(ipsq != NULL) {
+                       sa_len = KLIPS_SATOT(debug_pfkey, &extr->ips->ips_said, 0, sa, sizeof(sa));
+                       ipsec_sa_put(ipsq);
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_getspi_parse: "
+                                   "EMT_GETSPI found an old ipsec_sa for SA: %s, delete it first.\n",
+                                   sa_len ? sa : " (error)");
+                       SENDERR(EEXIST);
+               } else {
+                       found_avail = 1;
+               }
+       } else {
+               int i = 0;
+               __u32 rand_val;
+               __u32 spi_diff;
+               while( ( i < (spi_diff = (ntohl(maxspi) - ntohl(minspi)))) && !found_avail ) {
+                       prng_bytes(&ipsec_prng, (char *) &(rand_val),
+                                        ( (spi_diff < (2^8))  ? 1 :
+                                          ( (spi_diff < (2^16)) ? 2 :
+                                            ( (spi_diff < (2^24)) ? 3 :
+                                          4 ) ) ) );
+                       extr->ips->ips_said.spi = htonl(ntohl(minspi) +
+                                             (rand_val %
+                                             (spi_diff + 1)));
+                       i++;
+                       ipsq = ipsec_sa_getbyid(&(extr->ips->ips_said));
+                       if(ipsq == NULL) {
+                               found_avail = 1;
+                       } else {
+                               ipsec_sa_put(ipsq);
+                       }
+               }
+       }
+
+       sa_len = KLIPS_SATOT(debug_pfkey, &extr->ips->ips_said, 0, sa, sizeof(sa));
+
+       if (!found_avail) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_getspi_parse: "
+                           "found an old ipsec_sa for SA: %s, delete it first.\n",
+                           sa_len ? sa : " (error)");
+               SENDERR(EEXIST);
+       }
+
+       if(inet_addr_type((unsigned long)extr->ips->ips_said.dst.u.v4.sin_addr.s_addr) == RTN_LOCAL) {
+               extr->ips->ips_flags |= EMT_INBOUND;
+       }
+       
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_getspi_parse: "
+                   "existing ipsec_sa not found (this is good) for SA: %s, %s-bound, allocating.\n",
+                   sa_len ? sa : " (error)",
+                   extr->ips->ips_flags & EMT_INBOUND ? "in" : "out");
+       
+       /* XXX extr->ips->ips_rcvif = &(enc_softc[em->em_if].enc_if);*/
+       extr->ips->ips_rcvif = NULL;
+       extr->ips->ips_life.ipl_addtime.ipl_count = jiffies/HZ;
+
+       extr->ips->ips_state = SADB_SASTATE_LARVAL;
+
+       if(!extr->ips->ips_life.ipl_allocations.ipl_count) {
+               extr->ips->ips_life.ipl_allocations.ipl_count += 1;
+       }
+
+       if(!(pfkey_safe_build(error = pfkey_msg_hdr_build(&extensions_reply[0],
+                                                         SADB_GETSPI,
+                                                         satype,
+                                                         0,
+                                                         ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_seq,
+                                                         ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_pid),
+                             extensions_reply)
+            && pfkey_safe_build(error = pfkey_sa_ref_build(&extensions_reply[SADB_EXT_SA],
+                                                       SADB_EXT_SA,
+                                                       extr->ips->ips_said.spi,
+                                                       0,
+                                                       SADB_SASTATE_LARVAL,
+                                                       0,
+                                                       0,
+                                                       0,
+                                                       extr->ips->ips_ref),
+                                extensions_reply)
+            && pfkey_safe_build(error = pfkey_address_build(&extensions_reply[SADB_EXT_ADDRESS_SRC],
+                                                    SADB_EXT_ADDRESS_SRC,
+                                                    0, /*extr->ips->ips_said.proto,*/
+                                                    0,
+                                                    extr->ips->ips_addr_s),
+                                extensions_reply)
+            && pfkey_safe_build(error = pfkey_address_build(&extensions_reply[SADB_EXT_ADDRESS_DST],
+                                                    SADB_EXT_ADDRESS_DST,
+                                                    0, /*extr->ips->ips_said.proto,*/
+                                                    0,
+                                                    extr->ips->ips_addr_d),
+                                extensions_reply) )) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_getspi_parse: "
+                           "failed to build the getspi reply message extensions\n");
+               goto errlab;
+       }
+       
+       if((error = pfkey_msg_build(&pfkey_reply, extensions_reply, EXT_BITS_OUT))) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_getspi_parse: "
+                           "failed to build the getspi reply message\n");
+               SENDERR(-error);
+       }
+       for(pfkey_socketsp = pfkey_open_sockets;
+           pfkey_socketsp;
+           pfkey_socketsp = pfkey_socketsp->next) {
+               if((error = pfkey_upmsg(pfkey_socketsp->socketp, pfkey_reply))) {
+                       KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_getspi_parse: "
+                                   "sending up getspi reply message for satype=%d(%s) to socket=0p%p failed with error=%d.\n",
+                                   satype,
+                                   satype2name(satype),
+                                   pfkey_socketsp->socketp,
+                                   error);
+                       SENDERR(-error);
+               }
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_getspi_parse: "
+                           "sending up getspi reply message for satype=%d(%s) to socket=0p%p succeeded.\n",
+                           satype,
+                           satype2name(satype),
+                           pfkey_socketsp->socketp);
+       }
+       
+       if((error = ipsec_sa_add(extr->ips))) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_getspi_parse: "
+                           "failed to add the larval SA=%s with error=%d.\n",
+                           sa_len ? sa : " (error)",
+                           error);
+               SENDERR(-error);
+       }
+       extr->ips = NULL;
+       
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_getspi_parse: "
+                   "successful for SA: %s\n",
+                   sa_len ? sa : " (error)");
+       
+ errlab:
+       if (pfkey_reply) {
+               pfkey_msg_free(&pfkey_reply);
+       }
+       pfkey_extensions_free(extensions_reply);
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_update_parse(struct sock *sk, struct sadb_ext **extensions, struct pfkey_extracted_data* extr)
+{
+       int error = 0;
+       struct ipsec_sa* ipsq;
+       char sa[SATOT_BUF];
+       size_t sa_len;
+       struct sadb_ext *extensions_reply[SADB_EXT_MAX+1];
+       struct sadb_msg *pfkey_reply = NULL;
+       struct socket_list *pfkey_socketsp;
+       uint8_t satype = ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_satype;
+#ifdef CONFIG_IPSEC_NAT_TRAVERSAL
+       struct ipsec_sa *nat_t_ips_saved = NULL;
+#endif
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_update_parse: .\n");
+
+       pfkey_extensions_init(extensions_reply);
+
+       if(((struct sadb_sa*)extensions[SADB_EXT_SA])->sadb_sa_state != SADB_SASTATE_MATURE) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_update_parse: "
+                           "error, sa_state=%d must be MATURE=%d\n",
+                           ((struct sadb_sa*)extensions[SADB_EXT_SA])->sadb_sa_state,
+                           SADB_SASTATE_MATURE);
+               SENDERR(EINVAL);
+       }
+
+       if(extr == NULL || extr->ips == NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_update_parse: "
+                           "error, extr or extr->ips pointer NULL\n");
+               SENDERR(EINVAL);
+       }
+
+       sa_len = KLIPS_SATOT(debug_pfkey, &extr->ips->ips_said, 0, sa, sizeof(sa));
+
+       spin_lock_bh(&tdb_lock);
+
+       ipsq = ipsec_sa_getbyid(&(extr->ips->ips_said));
+       if (ipsq == NULL) {
+               spin_unlock_bh(&tdb_lock);
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_update_parse: "
+                           "reserved ipsec_sa for SA: %s not found.  Call SADB_GETSPI first or call SADB_ADD instead.\n",
+                           sa_len ? sa : " (error)");
+               SENDERR(ENOENT);
+       }
+
+       if(inet_addr_type((unsigned long)extr->ips->ips_said.dst.u.v4.sin_addr.s_addr) == RTN_LOCAL) {
+               extr->ips->ips_flags |= EMT_INBOUND;
+       }
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_update_parse: "
+                   "existing ipsec_sa found (this is good) for SA: %s, %s-bound, updating.\n",
+                   sa_len ? sa : " (error)",
+                   extr->ips->ips_flags & EMT_INBOUND ? "in" : "out");
+
+#ifdef CONFIG_IPSEC_NAT_TRAVERSAL
+       if (extr->ips->ips_natt_sport || extr->ips->ips_natt_dport) {
+               KLIPS_PRINT(debug_pfkey,
+                       "klips_debug:pfkey_update_parse: only updating NAT-T ports "
+                       "(%u:%u -> %u:%u)\n", 
+                       ipsq->ips_natt_sport, ipsq->ips_natt_dport,
+                       extr->ips->ips_natt_sport, extr->ips->ips_natt_dport);
+
+               if (extr->ips->ips_natt_sport) {
+                       ipsq->ips_natt_sport = extr->ips->ips_natt_sport;
+                       if (ipsq->ips_addr_s->sa_family == AF_INET) {
+                               ((struct sockaddr_in *)(ipsq->ips_addr_s))->sin_port = htons(extr->ips->ips_natt_sport);
+                       }
+               }
+
+               if (extr->ips->ips_natt_dport) {
+                       ipsq->ips_natt_dport = extr->ips->ips_natt_dport;
+                       if (ipsq->ips_addr_d->sa_family == AF_INET) {
+                               ((struct sockaddr_in *)(ipsq->ips_addr_d))->sin_port = htons(extr->ips->ips_natt_dport);
+                       }
+               }
+
+               nat_t_ips_saved = extr->ips;
+               extr->ips = ipsq;
+       }
+       else {
+#endif
+       
+       /* XXX extr->ips->ips_rcvif = &(enc_softc[em->em_if].enc_if);*/
+       extr->ips->ips_rcvif = NULL;
+       if ((error = pfkey_ipsec_sa_init(extr->ips))) {
+               ipsec_sa_put(ipsq);
+               spin_unlock_bh(&tdb_lock);
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_update_parse: "
+                           "not successful for SA: %s, deleting.\n",
+                           sa_len ? sa : " (error)");
+               SENDERR(-error);
+       }
+
+       extr->ips->ips_life.ipl_addtime.ipl_count = ipsq->ips_life.ipl_addtime.ipl_count;
+       ipsec_sa_put(ipsq);
+       if((error = ipsec_sa_delchain(ipsq))) {
+               spin_unlock_bh(&tdb_lock);
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_update_parse: "
+                           "error=%d, trouble deleting intermediate ipsec_sa for SA=%s.\n",
+                           error,
+                           sa_len ? sa : " (error)");
+               SENDERR(-error);
+       }
+#ifdef CONFIG_IPSEC_NAT_TRAVERSAL
+       }
+#endif
+
+       spin_unlock_bh(&tdb_lock);
+       
+       if(!(pfkey_safe_build(error = pfkey_msg_hdr_build(&extensions_reply[0],
+                                                         SADB_UPDATE,
+                                                         satype,
+                                                         0,
+                                                         ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_seq,
+                                                         ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_pid),
+                             extensions_reply)
+            && pfkey_safe_build(error = pfkey_sa_ref_build(&extensions_reply[SADB_EXT_SA],
+                                                       SADB_EXT_SA,
+                                                       extr->ips->ips_said.spi,
+                                                       extr->ips->ips_replaywin,
+                                                       extr->ips->ips_state,
+                                                       extr->ips->ips_authalg,
+                                                       extr->ips->ips_encalg,
+                                                       extr->ips->ips_flags,
+                                                       extr->ips->ips_ref),
+                                extensions_reply)
+            /* The 3 lifetime extentions should only be sent if non-zero. */
+            && (extensions[SADB_EXT_LIFETIME_HARD]
+                ? pfkey_safe_build(error = pfkey_lifetime_build(&extensions_reply[SADB_EXT_LIFETIME_HARD],
+                                                                SADB_EXT_LIFETIME_HARD,
+                                                                extr->ips->ips_life.ipl_allocations.ipl_hard,
+                                                                extr->ips->ips_life.ipl_bytes.ipl_hard,
+                                                                extr->ips->ips_life.ipl_addtime.ipl_hard,
+                                                                extr->ips->ips_life.ipl_usetime.ipl_hard,
+                                                                extr->ips->ips_life.ipl_packets.ipl_hard),
+                                   extensions_reply) : 1)
+            && (extensions[SADB_EXT_LIFETIME_SOFT]
+                ? pfkey_safe_build(error = pfkey_lifetime_build(&extensions_reply[SADB_EXT_LIFETIME_SOFT],
+                                                                SADB_EXT_LIFETIME_SOFT,
+                                                                extr->ips->ips_life.ipl_allocations.ipl_count,
+                                                                extr->ips->ips_life.ipl_bytes.ipl_count,
+                                                                extr->ips->ips_life.ipl_addtime.ipl_count,
+                                                                extr->ips->ips_life.ipl_usetime.ipl_count,
+                                                                extr->ips->ips_life.ipl_packets.ipl_count),
+                                   extensions_reply) : 1)
+            && (extr->ips->ips_life.ipl_allocations.ipl_count
+                || extr->ips->ips_life.ipl_bytes.ipl_count
+                || extr->ips->ips_life.ipl_addtime.ipl_count
+                || extr->ips->ips_life.ipl_usetime.ipl_count
+                || extr->ips->ips_life.ipl_packets.ipl_count
+
+                ? pfkey_safe_build(error = pfkey_lifetime_build(&extensions_reply[SADB_EXT_LIFETIME_CURRENT],
+                                                                SADB_EXT_LIFETIME_CURRENT,
+                                                                extr->ips->ips_life.ipl_allocations.ipl_count,
+                                                                extr->ips->ips_life.ipl_bytes.ipl_count,
+                                                                extr->ips->ips_life.ipl_addtime.ipl_count,
+                                                                extr->ips->ips_life.ipl_usetime.ipl_count,
+                                                                extr->ips->ips_life.ipl_packets.ipl_count),
+                                   extensions_reply) : 1)
+            && pfkey_safe_build(error = pfkey_address_build(&extensions_reply[SADB_EXT_ADDRESS_SRC],
+                                                            SADB_EXT_ADDRESS_SRC,
+                                                            0, /*extr->ips->ips_said.proto,*/
+                                                            0,
+                                                            extr->ips->ips_addr_s),
+                                extensions_reply)
+            && pfkey_safe_build(error = pfkey_address_build(&extensions_reply[SADB_EXT_ADDRESS_DST],
+                                                            SADB_EXT_ADDRESS_DST,
+                                                            0, /*extr->ips->ips_said.proto,*/
+                                                            0,
+                                                            extr->ips->ips_addr_d),
+                                extensions_reply)
+            && (extr->ips->ips_ident_s.data
+                 ? pfkey_safe_build(error = pfkey_ident_build(&extensions_reply[SADB_EXT_IDENTITY_SRC],
+                                                              SADB_EXT_IDENTITY_SRC,
+                                                             extr->ips->ips_ident_s.type,
+                                                             extr->ips->ips_ident_s.id,
+                                                              extr->ips->ips_ident_s.len,
+                                                             extr->ips->ips_ident_s.data),
+                                    extensions_reply) : 1)
+            && (extr->ips->ips_ident_d.data
+                 ? pfkey_safe_build(error = pfkey_ident_build(&extensions_reply[SADB_EXT_IDENTITY_DST],
+                                                              SADB_EXT_IDENTITY_DST,
+                                                             extr->ips->ips_ident_d.type,
+                                                             extr->ips->ips_ident_d.id,
+                                                              extr->ips->ips_ident_d.len,
+                                                             extr->ips->ips_ident_d.data),
+                                    extensions_reply) : 1)
+#if 0
+            /* FIXME: This won't work yet because I have not finished
+               it. */
+            && (extr->ips->ips_sens_
+                ? pfkey_safe_build(error = pfkey_sens_build(&extensions_reply[SADB_EXT_SENSITIVITY],
+                                                            extr->ips->ips_sens_dpd,
+                                                            extr->ips->ips_sens_sens_level,
+                                                            extr->ips->ips_sens_sens_len,
+                                                            extr->ips->ips_sens_sens_bitmap,
+                                                            extr->ips->ips_sens_integ_level,
+                                                            extr->ips->ips_sens_integ_len,
+                                                            extr->ips->ips_sens_integ_bitmap),
+                                   extensions_reply) : 1)
+#endif
+               )) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_update_parse: "
+                           "failed to build the update reply message extensions\n");
+               SENDERR(-error);
+       }
+               
+       if((error = pfkey_msg_build(&pfkey_reply, extensions_reply, EXT_BITS_OUT))) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_update_parse: "
+                           "failed to build the update reply message\n");
+               SENDERR(-error);
+       }
+       for(pfkey_socketsp = pfkey_open_sockets;
+           pfkey_socketsp;
+           pfkey_socketsp = pfkey_socketsp->next) {
+               if((error = pfkey_upmsg(pfkey_socketsp->socketp, pfkey_reply))) {
+                       KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_update_parse: "
+                                   "sending up update reply message for satype=%d(%s) to socket=0p%p failed with error=%d.\n",
+                                   satype,
+                                   satype2name(satype),
+                                   pfkey_socketsp->socketp,
+                                   error);
+                       SENDERR(-error);
+               }
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_update_parse: "
+                           "sending up update reply message for satype=%d(%s) to socket=0p%p succeeded.\n",
+                           satype,
+                           satype2name(satype),
+                           pfkey_socketsp->socketp);
+       }
+
+#ifdef CONFIG_IPSEC_NAT_TRAVERSAL
+       if (nat_t_ips_saved) {
+               /**
+                * As we _really_ update existing SA, we keep tdbq and need to delete
+                * parsed ips (nat_t_ips_saved, was extr->ips).
+                *
+                * goto errlab with extr->ips = nat_t_ips_saved will free it.
+                */
+
+               extr->ips = nat_t_ips_saved;
+
+               error = 0;
+               KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_update_parse (NAT-T ports): "
+                   "successful for SA: %s\n",
+                   sa_len ? sa : " (error)");
+
+               goto errlab;
+       }
+#endif
+
+       if((error = ipsec_sa_add(extr->ips))) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_update_parse: "
+                           "failed to update the mature SA=%s with error=%d.\n",
+                           sa_len ? sa : " (error)",
+                           error);
+               SENDERR(-error);
+       }
+       extr->ips = NULL;
+       
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_update_parse: "
+                   "successful for SA: %s\n",
+                   sa_len ? sa : " (error)");
+       
+ errlab:
+       if (pfkey_reply) {
+               pfkey_msg_free(&pfkey_reply);
+       }
+       pfkey_extensions_free(extensions_reply);
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_add_parse(struct sock *sk, struct sadb_ext **extensions, struct pfkey_extracted_data* extr)
+{
+       int error = 0;
+       struct ipsec_sa* ipsq;
+       char sa[SATOT_BUF];
+       size_t sa_len;
+       struct sadb_ext *extensions_reply[SADB_EXT_MAX+1];
+       struct sadb_msg *pfkey_reply = NULL;
+       struct socket_list *pfkey_socketsp;
+       uint8_t satype = ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_satype;
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_add_parse: .\n");
+
+       pfkey_extensions_init(extensions_reply);
+
+       if(((struct sadb_sa*)extensions[SADB_EXT_SA])->sadb_sa_state != SADB_SASTATE_MATURE) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_add_parse: "
+                           "error, sa_state=%d must be MATURE=%d\n",
+                           ((struct sadb_sa*)extensions[SADB_EXT_SA])->sadb_sa_state,
+                           SADB_SASTATE_MATURE);
+               SENDERR(EINVAL);
+       }
+
+       if(!extr || !extr->ips) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_add_parse: "
+                           "extr or extr->ips pointer NULL\n");
+               SENDERR(EINVAL);
+       }
+
+       sa_len = KLIPS_SATOT(debug_pfkey, &extr->ips->ips_said, 0, sa, sizeof(sa));
+
+       ipsq = ipsec_sa_getbyid(&(extr->ips->ips_said));
+       if(ipsq != NULL) {
+               ipsec_sa_put(ipsq);
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_add_parse: "
+                           "found an old ipsec_sa for SA%s, delete it first.\n",
+                           sa_len ? sa : " (error)");
+               SENDERR(EEXIST);
+       }
+
+       if(inet_addr_type((unsigned long)extr->ips->ips_said.dst.u.v4.sin_addr.s_addr) == RTN_LOCAL) {
+               extr->ips->ips_flags |= EMT_INBOUND;
+       }
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_add_parse: "
+                   "existing ipsec_sa not found (this is good) for SA%s, %s-bound, allocating.\n",
+                   sa_len ? sa : " (error)",
+                   extr->ips->ips_flags & EMT_INBOUND ? "in" : "out");
+       
+       /* XXX extr->ips->ips_rcvif = &(enc_softc[em->em_if].enc_if);*/
+       extr->ips->ips_rcvif = NULL;
+       
+       if ((error = pfkey_ipsec_sa_init(extr->ips))) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_add_parse: "
+                           "not successful for SA: %s, deleting.\n",
+                           sa_len ? sa : " (error)");
+               SENDERR(-error);
+       }
+
+       extr->ips->ips_life.ipl_addtime.ipl_count = jiffies / HZ;
+       if(!extr->ips->ips_life.ipl_allocations.ipl_count) {
+               extr->ips->ips_life.ipl_allocations.ipl_count += 1;
+       }
+
+       if(!(pfkey_safe_build(error = pfkey_msg_hdr_build(&extensions_reply[0],
+                                                         SADB_ADD,
+                                                         satype,
+                                                         0,
+                                                         ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_seq,
+                                                         ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_pid),
+                             extensions_reply)
+            && pfkey_safe_build(error = pfkey_sa_ref_build(&extensions_reply[SADB_EXT_SA],
+                                                       SADB_EXT_SA,
+                                                       extr->ips->ips_said.spi,
+                                                       extr->ips->ips_replaywin,
+                                                       extr->ips->ips_state,
+                                                       extr->ips->ips_authalg,
+                                                       extr->ips->ips_encalg,
+                                                       extr->ips->ips_flags,
+                                                       extr->ips->ips_ref),
+                                extensions_reply)
+            /* The 3 lifetime extentions should only be sent if non-zero. */
+            && (extensions[SADB_EXT_LIFETIME_HARD]
+                ? pfkey_safe_build(error = pfkey_lifetime_build(&extensions_reply[SADB_EXT_LIFETIME_HARD],
+                                                                SADB_EXT_LIFETIME_HARD,
+                                                                extr->ips->ips_life.ipl_allocations.ipl_hard,
+                                                                extr->ips->ips_life.ipl_bytes.ipl_hard,
+                                                                extr->ips->ips_life.ipl_addtime.ipl_hard,
+                                                                extr->ips->ips_life.ipl_usetime.ipl_hard,
+                                                                extr->ips->ips_life.ipl_packets.ipl_hard),
+                                   extensions_reply) : 1)
+            && (extensions[SADB_EXT_LIFETIME_SOFT]
+                ? pfkey_safe_build(error = pfkey_lifetime_build(&extensions_reply[SADB_EXT_LIFETIME_SOFT],
+                                                                SADB_EXT_LIFETIME_SOFT,
+                                                                extr->ips->ips_life.ipl_allocations.ipl_soft,
+                                                                extr->ips->ips_life.ipl_bytes.ipl_soft,
+                                                                extr->ips->ips_life.ipl_addtime.ipl_soft,
+                                                                extr->ips->ips_life.ipl_usetime.ipl_soft,
+                                                                extr->ips->ips_life.ipl_packets.ipl_soft),
+                                   extensions_reply) : 1)
+            && pfkey_safe_build(error = pfkey_address_build(&extensions_reply[SADB_EXT_ADDRESS_SRC],
+                                                            SADB_EXT_ADDRESS_SRC,
+                                                            0, /*extr->ips->ips_said.proto,*/
+                                                            0,
+                                                            extr->ips->ips_addr_s),
+                                extensions_reply)
+            && pfkey_safe_build(error = pfkey_address_build(&extensions_reply[SADB_EXT_ADDRESS_DST],
+                                                            SADB_EXT_ADDRESS_DST,
+                                                            0, /*extr->ips->ips_said.proto,*/
+                                                            0,
+                                                            extr->ips->ips_addr_d),
+                                extensions_reply)
+            && (extr->ips->ips_ident_s.data
+                 ? pfkey_safe_build(error = pfkey_ident_build(&extensions_reply[SADB_EXT_IDENTITY_SRC],
+                                                              SADB_EXT_IDENTITY_SRC,
+                                                             extr->ips->ips_ident_s.type,
+                                                             extr->ips->ips_ident_s.id,
+                                                              extr->ips->ips_ident_s.len,
+                                                             extr->ips->ips_ident_s.data),
+                                    extensions_reply) : 1)
+            && (extr->ips->ips_ident_d.data
+                 ? pfkey_safe_build(error = pfkey_ident_build(&extensions_reply[SADB_EXT_IDENTITY_DST],
+                                                              SADB_EXT_IDENTITY_DST,
+                                                             extr->ips->ips_ident_d.type,
+                                                             extr->ips->ips_ident_d.id,
+                                                              extr->ips->ips_ident_d.len,
+                                                             extr->ips->ips_ident_d.data),
+                                    extensions_reply) : 1)
+#if 0
+            /* FIXME: This won't work yet because I have not finished
+               it. */
+            && (extr->ips->ips_sens_
+                ? pfkey_safe_build(error = pfkey_sens_build(&extensions_reply[SADB_EXT_SENSITIVITY],
+                                                            extr->ips->ips_sens_dpd,
+                                                            extr->ips->ips_sens_sens_level,
+                                                            extr->ips->ips_sens_sens_len,
+                                                            extr->ips->ips_sens_sens_bitmap,
+                                                            extr->ips->ips_sens_integ_level,
+                                                            extr->ips->ips_sens_integ_len,
+                                                            extr->ips->ips_sens_integ_bitmap),
+                                   extensions_reply) : 1)
+#endif
+               )) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_add_parse: "
+                           "failed to build the add reply message extensions\n");
+               SENDERR(-error);
+       }
+               
+       if((error = pfkey_msg_build(&pfkey_reply, extensions_reply, EXT_BITS_OUT))) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_add_parse: "
+                           "failed to build the add reply message\n");
+               SENDERR(-error);
+       }
+       for(pfkey_socketsp = pfkey_open_sockets;
+           pfkey_socketsp;
+           pfkey_socketsp = pfkey_socketsp->next) {
+               if((error = pfkey_upmsg(pfkey_socketsp->socketp, pfkey_reply))) {
+                       KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_add_parse: "
+                                   "sending up add reply message for satype=%d(%s) to socket=0p%p failed with error=%d.\n",
+                                   satype,
+                                   satype2name(satype),
+                                   pfkey_socketsp->socketp,
+                                   error);
+                       SENDERR(-error);
+               }
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_add_parse: "
+                           "sending up add reply message for satype=%d(%s) to socket=0p%p succeeded.\n",
+                           satype,
+                           satype2name(satype),
+                           pfkey_socketsp->socketp);
+       }
+
+       if((error = ipsec_sa_add(extr->ips))) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_add_parse: "
+                           "failed to add the mature SA=%s with error=%d.\n",
+                           sa_len ? sa : " (error)",
+                           error);
+               SENDERR(-error);
+       }
+       extr->ips = NULL;
+       
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_add_parse: "
+                   "successful for SA: %s\n",
+                   sa_len ? sa : " (error)");
+       
+ errlab:
+       if (pfkey_reply) {
+               pfkey_msg_free(&pfkey_reply);
+       }
+       pfkey_extensions_free(extensions_reply);
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_delete_parse(struct sock *sk, struct sadb_ext **extensions, struct pfkey_extracted_data* extr)
+{
+       struct ipsec_sa *ipsp;
+       char sa[SATOT_BUF];
+       size_t sa_len;
+       int error = 0;
+       struct sadb_ext *extensions_reply[SADB_EXT_MAX+1];
+       struct sadb_msg *pfkey_reply = NULL;
+       struct socket_list *pfkey_socketsp;
+       uint8_t satype = ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_satype;
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_delete_parse: .\n");
+
+       pfkey_extensions_init(extensions_reply);
+
+       if(!extr || !extr->ips) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_delete_parse: "
+                           "extr or extr->ips pointer NULL, fatal\n");
+               SENDERR(EINVAL);
+       }
+
+       sa_len = KLIPS_SATOT(debug_pfkey, &extr->ips->ips_said, 0, sa, sizeof(sa));
+
+       spin_lock_bh(&tdb_lock);
+
+       ipsp = ipsec_sa_getbyid(&(extr->ips->ips_said));
+       if (ipsp == NULL) {
+               spin_unlock_bh(&tdb_lock);
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_delete_parse: "
+                           "ipsec_sa not found for SA:%s, could not delete.\n",
+                           sa_len ? sa : " (error)");
+               SENDERR(ESRCH);
+       }
+
+       ipsec_sa_put(ipsp);
+       if((error = ipsec_sa_delchain(ipsp))) {
+               spin_unlock_bh(&tdb_lock);
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_delete_parse: "
+                           "error=%d returned trying to delete ipsec_sa for SA:%s.\n",
+                           error,
+                           sa_len ? sa : " (error)");
+               SENDERR(-error);
+       }
+       spin_unlock_bh(&tdb_lock);
+
+       if(!(pfkey_safe_build(error = pfkey_msg_hdr_build(&extensions_reply[0],
+                                                         SADB_DELETE,
+                                                         satype,
+                                                         0,
+                                                         ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_seq,
+                                                         ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_pid),
+                             extensions_reply)
+            && pfkey_safe_build(error = pfkey_sa_ref_build(&extensions_reply[SADB_EXT_SA],
+                                                       SADB_EXT_SA,
+                                                       extr->ips->ips_said.spi,
+                                                       0,
+                                                       0,
+                                                       0,
+                                                       0,
+                                                       0,
+                                                       extr->ips->ips_ref),
+                                extensions_reply)
+            && pfkey_safe_build(error = pfkey_address_build(&extensions_reply[SADB_EXT_ADDRESS_SRC],
+                                                            SADB_EXT_ADDRESS_SRC,
+                                                            0, /*extr->ips->ips_said.proto,*/
+                                                            0,
+                                                            extr->ips->ips_addr_s),
+                                extensions_reply)
+            && pfkey_safe_build(error = pfkey_address_build(&extensions_reply[SADB_EXT_ADDRESS_DST],
+                                                            SADB_EXT_ADDRESS_DST,
+                                                            0, /*extr->ips->ips_said.proto,*/
+                                                            0,
+                                                            extr->ips->ips_addr_d),
+                                extensions_reply)
+               )) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_delete_parse: "
+                           "failed to build the delete reply message extensions\n");
+               SENDERR(-error);
+       }
+       
+       if((error = pfkey_msg_build(&pfkey_reply, extensions_reply, EXT_BITS_OUT))) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_delete_parse: "
+                           "failed to build the delete reply message\n");
+               SENDERR(-error);
+       }
+       for(pfkey_socketsp = pfkey_open_sockets;
+           pfkey_socketsp;
+           pfkey_socketsp = pfkey_socketsp->next) {
+               if((error = pfkey_upmsg(pfkey_socketsp->socketp, pfkey_reply))) {
+                       KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_delete_parse: "
+                                   "sending up delete reply message for satype=%d(%s) to socket=0p%p failed with error=%d.\n",
+                                   satype,
+                                   satype2name(satype),
+                                   pfkey_socketsp->socketp,
+                                   error);
+                       SENDERR(-error);
+               }
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_delete_parse: "
+                           "sending up delete reply message for satype=%d(%s) to socket=0p%p succeeded.\n",
+                           satype,
+                           satype2name(satype),
+                           pfkey_socketsp->socketp);
+       }
+       
+ errlab:
+       if (pfkey_reply) {
+               pfkey_msg_free(&pfkey_reply);
+       }
+       pfkey_extensions_free(extensions_reply);
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_get_parse(struct sock *sk, struct sadb_ext **extensions, struct pfkey_extracted_data* extr)
+{
+       int error = 0;
+       struct ipsec_sa *ipsp;
+       char sa[SATOT_BUF];
+       size_t sa_len;
+       struct sadb_ext *extensions_reply[SADB_EXT_MAX+1];
+       struct sadb_msg *pfkey_reply = NULL;
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_get_parse: .\n");
+
+       pfkey_extensions_init(extensions_reply);
+
+       if(!extr || !extr->ips) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_get_parse: "
+                           "extr or extr->ips pointer NULL, fatal\n");
+               SENDERR(EINVAL);
+       }
+
+       sa_len = KLIPS_SATOT(debug_pfkey, &extr->ips->ips_said, 0, sa, sizeof(sa));
+
+       spin_lock_bh(&tdb_lock);
+
+       ipsp = ipsec_sa_getbyid(&(extr->ips->ips_said));
+       if (ipsp == NULL) {
+               spin_unlock_bh(&tdb_lock);
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_get_parse: "
+                           "ipsec_sa not found for SA=%s, could not get.\n",
+                           sa_len ? sa : " (error)");
+               SENDERR(ESRCH);
+       }
+       
+       if(!(pfkey_safe_build(error = pfkey_msg_hdr_build(&extensions_reply[0],
+                                                         SADB_GET,
+                                                         ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_satype,
+                                                         0,
+                                                         ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_seq,
+                                                         ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_pid),
+                             extensions_reply)
+            && pfkey_safe_build(error = pfkey_sa_ref_build(&extensions_reply[SADB_EXT_SA],
+                                                       SADB_EXT_SA,
+                                                       extr->ips->ips_said.spi,
+                                                       extr->ips->ips_replaywin,
+                                                       extr->ips->ips_state,
+                                                       extr->ips->ips_authalg,
+                                                       extr->ips->ips_encalg,
+                                                       extr->ips->ips_flags,
+                                                       extr->ips->ips_ref),
+                                extensions_reply)
+            /* The 3 lifetime extentions should only be sent if non-zero. */
+            && (ipsp->ips_life.ipl_allocations.ipl_count
+                || ipsp->ips_life.ipl_bytes.ipl_count
+                || ipsp->ips_life.ipl_addtime.ipl_count
+                || ipsp->ips_life.ipl_usetime.ipl_count
+                || ipsp->ips_life.ipl_packets.ipl_count
+                ? pfkey_safe_build(error = pfkey_lifetime_build(&extensions_reply[SADB_EXT_LIFETIME_CURRENT],
+                                                                SADB_EXT_LIFETIME_CURRENT,
+                                                                ipsp->ips_life.ipl_allocations.ipl_count,
+                                                                ipsp->ips_life.ipl_bytes.ipl_count,
+                                                                ipsp->ips_life.ipl_addtime.ipl_count,
+                                                                ipsp->ips_life.ipl_usetime.ipl_count,
+                                                                ipsp->ips_life.ipl_packets.ipl_count),
+                                   extensions_reply) : 1)
+            && (ipsp->ips_life.ipl_allocations.ipl_hard
+                || ipsp->ips_life.ipl_bytes.ipl_hard
+                || ipsp->ips_life.ipl_addtime.ipl_hard
+                || ipsp->ips_life.ipl_usetime.ipl_hard
+                || ipsp->ips_life.ipl_packets.ipl_hard
+                ? pfkey_safe_build(error = pfkey_lifetime_build(&extensions_reply[SADB_EXT_LIFETIME_HARD],
+                                                                SADB_EXT_LIFETIME_HARD,
+                                                                ipsp->ips_life.ipl_allocations.ipl_hard,
+                                                                ipsp->ips_life.ipl_bytes.ipl_hard,
+                                                                ipsp->ips_life.ipl_addtime.ipl_hard,
+                                                                ipsp->ips_life.ipl_usetime.ipl_hard,
+                                                                ipsp->ips_life.ipl_packets.ipl_hard),
+                                   extensions_reply) : 1)
+            && (ipsp->ips_life.ipl_allocations.ipl_soft
+                || ipsp->ips_life.ipl_bytes.ipl_soft
+                || ipsp->ips_life.ipl_addtime.ipl_soft
+                || ipsp->ips_life.ipl_usetime.ipl_soft
+                || ipsp->ips_life.ipl_packets.ipl_soft
+                ? pfkey_safe_build(error = pfkey_lifetime_build(&extensions_reply[SADB_EXT_LIFETIME_SOFT],
+                                                                SADB_EXT_LIFETIME_SOFT,
+                                                                ipsp->ips_life.ipl_allocations.ipl_soft,
+                                                                ipsp->ips_life.ipl_bytes.ipl_soft,
+                                                                ipsp->ips_life.ipl_addtime.ipl_soft,
+                                                                ipsp->ips_life.ipl_usetime.ipl_soft,
+                                                                ipsp->ips_life.ipl_packets.ipl_soft),
+                                   extensions_reply) : 1)
+            && pfkey_safe_build(error = pfkey_address_build(&extensions_reply[SADB_EXT_ADDRESS_SRC],
+                                                            SADB_EXT_ADDRESS_SRC,
+                                                            0, /*extr->ips->ips_said.proto,*/
+                                                            0,
+                                                            extr->ips->ips_addr_s),
+                                extensions_reply)
+            && pfkey_safe_build(error = pfkey_address_build(&extensions_reply[SADB_EXT_ADDRESS_DST],
+                                                            SADB_EXT_ADDRESS_DST,
+                                                            0, /*extr->ips->ips_said.proto,*/
+                                                            0,
+                                                            extr->ips->ips_addr_d),
+                                extensions_reply)
+            && (extr->ips->ips_addr_p
+                ? pfkey_safe_build(error = pfkey_address_build(&extensions_reply[SADB_EXT_ADDRESS_PROXY],
+                                                               SADB_EXT_ADDRESS_PROXY,
+                                                               0, /*extr->ips->ips_said.proto,*/
+                                                               0,
+                                                               extr->ips->ips_addr_p),
+                                   extensions_reply) : 1)
+#if 0
+            /* FIXME: This won't work yet because the keys are not
+               stored directly in the ipsec_sa.  They are stored as
+               contexts. */
+            && (extr->ips->ips_key_a_size
+                ? pfkey_safe_build(error = pfkey_key_build(&extensions_reply[SADB_EXT_KEY_AUTH],
+                                                           SADB_EXT_KEY_AUTH,
+                                                           extr->ips->ips_key_a_size * 8,
+                                                           extr->ips->ips_key_a),
+                                   extensions_reply) : 1)
+            /* FIXME: This won't work yet because the keys are not
+               stored directly in the ipsec_sa.  They are stored as
+               key schedules. */
+            && (extr->ips->ips_key_e_size
+                ? pfkey_safe_build(error = pfkey_key_build(&extensions_reply[SADB_EXT_KEY_ENCRYPT],
+                                                           SADB_EXT_KEY_ENCRYPT,
+                                                           extr->ips->ips_key_e_size * 8,
+                                                           extr->ips->ips_key_e),
+                                   extensions_reply) : 1)
+#endif
+            && (extr->ips->ips_ident_s.data
+                 ? pfkey_safe_build(error = pfkey_ident_build(&extensions_reply[SADB_EXT_IDENTITY_SRC],
+                                                              SADB_EXT_IDENTITY_SRC,
+                                                             extr->ips->ips_ident_s.type,
+                                                             extr->ips->ips_ident_s.id,
+                                                              extr->ips->ips_ident_s.len,
+                                                             extr->ips->ips_ident_s.data),
+                                    extensions_reply) : 1)
+            && (extr->ips->ips_ident_d.data
+                 ? pfkey_safe_build(error = pfkey_ident_build(&extensions_reply[SADB_EXT_IDENTITY_DST],
+                                                              SADB_EXT_IDENTITY_DST,
+                                                             extr->ips->ips_ident_d.type,
+                                                             extr->ips->ips_ident_d.id,
+                                                              extr->ips->ips_ident_d.len,
+                                                             extr->ips->ips_ident_d.data),
+                                    extensions_reply) : 1)
+#if 0
+            /* FIXME: This won't work yet because I have not finished
+               it. */
+            && (extr->ips->ips_sens_
+                ? pfkey_safe_build(error = pfkey_sens_build(&extensions_reply[SADB_EXT_SENSITIVITY],
+                                                            extr->ips->ips_sens_dpd,
+                                                            extr->ips->ips_sens_sens_level,
+                                                            extr->ips->ips_sens_sens_len,
+                                                            extr->ips->ips_sens_sens_bitmap,
+                                                            extr->ips->ips_sens_integ_level,
+                                                            extr->ips->ips_sens_integ_len,
+                                                            extr->ips->ips_sens_integ_bitmap),
+                                   extensions_reply) : 1)
+#endif
+                    )) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_get_parse: "
+                           "failed to build the get reply message extensions\n");
+               ipsec_sa_put(ipsp);
+               spin_unlock_bh(&tdb_lock);
+               SENDERR(-error);
+       }
+               
+       ipsec_sa_put(ipsp);
+       spin_unlock_bh(&tdb_lock);
+       
+       if((error = pfkey_msg_build(&pfkey_reply, extensions_reply, EXT_BITS_OUT))) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_get_parse: "
+                           "failed to build the get reply message\n");
+               SENDERR(-error);
+       }
+       
+       if((error = pfkey_upmsg(sk->sk_socket, pfkey_reply))) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_get_parse: "
+                           "failed to send the get reply message\n");
+               SENDERR(-error);
+       }
+       
+       KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_get_parse: "
+                   "succeeded in sending get reply message.\n");
+       
+ errlab:
+       if (pfkey_reply) {
+               pfkey_msg_free(&pfkey_reply);
+       }
+       pfkey_extensions_free(extensions_reply);
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_acquire_parse(struct sock *sk, struct sadb_ext **extensions, struct pfkey_extracted_data* extr)
+{
+       int error = 0;
+       struct socket_list *pfkey_socketsp;
+       uint8_t satype = ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_satype;
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_acquire_parse: .\n");
+
+       /* XXX I don't know if we want an upper bound, since userspace may
+          want to register itself for an satype > SADB_SATYPE_MAX. */
+       if((satype == 0) || (satype > SADB_SATYPE_MAX)) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_acquire_parse: "
+                           "SATYPE=%d invalid.\n",
+                           satype);
+               SENDERR(EINVAL);
+       }
+
+       if(!(pfkey_registered_sockets[satype])) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_acquire_parse: "
+                           "no sockets registered for SAtype=%d(%s).\n",
+                           satype,
+                           satype2name(satype));
+               SENDERR(EPROTONOSUPPORT);
+       }
+
+       for(pfkey_socketsp = pfkey_registered_sockets[satype];
+           pfkey_socketsp;
+           pfkey_socketsp = pfkey_socketsp->next) {
+               if((error = pfkey_upmsg(pfkey_socketsp->socketp,
+                                       ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])))) {
+                       KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_acquire_parse: "
+                                   "sending up acquire reply message for satype=%d(%s) to socket=0p%p failed with error=%d.\n",
+                                   satype,
+                                   satype2name(satype),
+                                   pfkey_socketsp->socketp,
+                                   error);
+                       SENDERR(-error);
+               }
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_acquire_parse: "
+                           "sending up acquire reply message for satype=%d(%s) to socket=0p%p succeeded.\n",
+                           satype,
+                           satype2name(satype),
+                           pfkey_socketsp->socketp);
+       }
+       
+ errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_register_parse(struct sock *sk, struct sadb_ext **extensions, struct pfkey_extracted_data* extr)
+{
+       int error = 0;
+       uint8_t satype = ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_satype;
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_register_parse: .\n");
+
+       /* XXX I don't know if we want an upper bound, since userspace may
+          want to register itself for an satype > SADB_SATYPE_MAX. */
+       if((satype == 0) || (satype > SADB_SATYPE_MAX)) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_register_parse: "
+                           "SATYPE=%d invalid.\n",
+                           satype);
+               SENDERR(EINVAL);
+       }
+
+       if(!pfkey_list_insert_socket(sk->sk_socket,
+                                &(pfkey_registered_sockets[satype]))) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_register_parse: "
+                           "SATYPE=%02d(%s) successfully registered by KMd (pid=%d).\n",
+                           satype,
+                           satype2name(satype),
+                           key_pid(sk));
+       };
+       
+       /* send up register msg with supported SATYPE algos */
+
+       error=pfkey_register_reply(satype, (struct sadb_msg*)extensions[SADB_EXT_RESERVED]);
+ errlab:
+       return error;
+}
+
+int
+pfkey_register_reply(int satype, struct sadb_msg *sadb_msg)
+{
+       struct sadb_ext *extensions_reply[SADB_EXT_MAX+1];
+       struct sadb_msg *pfkey_reply = NULL;
+       struct socket_list *pfkey_socketsp;
+       struct supported_list *pfkey_supported_listp;
+       unsigned int alg_num_a = 0, alg_num_e = 0;
+       struct sadb_alg *alg_a = NULL, *alg_e = NULL, *alg_ap = NULL, *alg_ep = NULL;
+       int error = 0;
+
+       pfkey_extensions_init(extensions_reply);
+
+       if((satype == 0) || (satype > SADB_SATYPE_MAX)) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_register_reply: "
+                           "SAtype=%d unspecified or unknown.\n",
+                           satype);
+               SENDERR(EINVAL);
+       }
+       if(!(pfkey_registered_sockets[satype])) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_register_reply: "
+                           "no sockets registered for SAtype=%d(%s).\n",
+                           satype,
+                           satype2name(satype));
+               SENDERR(EPROTONOSUPPORT);
+       }
+       /* send up register msg with supported SATYPE algos */
+       pfkey_supported_listp = pfkey_supported_list[satype];
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_register_reply: "
+                   "pfkey_supported_list[%d]=0p%p\n",
+                   satype,
+                   pfkey_supported_list[satype]);
+       while(pfkey_supported_listp) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_register_reply: "
+                           "checking supported=0p%p\n",
+                           pfkey_supported_listp);
+               if(pfkey_supported_listp->supportedp->ias_exttype == SADB_EXT_SUPPORTED_AUTH) {
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_register_reply: "
+                                   "adding auth alg.\n");
+                       alg_num_a++;
+               }
+               if(pfkey_supported_listp->supportedp->ias_exttype == SADB_EXT_SUPPORTED_ENCRYPT) {
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_register_reply: "
+                                   "adding encrypt alg.\n");
+                       alg_num_e++;
+               }
+               pfkey_supported_listp = pfkey_supported_listp->next;
+       }
+       
+       if(alg_num_a) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_register_reply: "
+                           "allocating %lu bytes for auth algs.\n",
+                           (unsigned long) (alg_num_a * sizeof(struct sadb_alg)));
+               if((alg_a = kmalloc(alg_num_a * sizeof(struct sadb_alg), GFP_ATOMIC) ) == NULL) {
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_register_reply: "
+                                   "auth alg memory allocation error\n");
+                       SENDERR(ENOMEM);
+               }
+               alg_ap = alg_a;
+       }
+       
+       if(alg_num_e) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_register_reply: "
+                           "allocating %lu bytes for enc algs.\n",
+                           (unsigned long) (alg_num_e * sizeof(struct sadb_alg)));
+               if((alg_e = kmalloc(alg_num_e * sizeof(struct sadb_alg), GFP_ATOMIC) ) == NULL) {
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_register_reply: "
+                                   "enc alg memory allocation error\n");
+                       SENDERR(ENOMEM);
+               }
+               alg_ep = alg_e;
+       }
+       
+       pfkey_supported_listp = pfkey_supported_list[satype];
+       while(pfkey_supported_listp) {
+               if(alg_num_a) {
+                       if(pfkey_supported_listp->supportedp->ias_exttype == SADB_EXT_SUPPORTED_AUTH) {
+                               alg_ap->sadb_alg_id = pfkey_supported_listp->supportedp->ias_id;
+                               alg_ap->sadb_alg_ivlen = pfkey_supported_listp->supportedp->ias_ivlen;
+                               alg_ap->sadb_alg_minbits = pfkey_supported_listp->supportedp->ias_keyminbits;
+                               alg_ap->sadb_alg_maxbits = pfkey_supported_listp->supportedp->ias_keymaxbits;
+                               alg_ap->sadb_alg_reserved = 0;
+                               KLIPS_PRINT(debug_pfkey && sysctl_ipsec_debug_verbose,
+                                           "klips_debug:pfkey_register_reply: "
+                                           "adding auth=0p%p\n",
+                                           alg_ap);
+                               alg_ap++;
+                       }
+               }
+               if(alg_num_e) {
+                       if(pfkey_supported_listp->supportedp->ias_exttype == SADB_EXT_SUPPORTED_ENCRYPT) {
+                               alg_ep->sadb_alg_id = pfkey_supported_listp->supportedp->ias_id;
+                               alg_ep->sadb_alg_ivlen = pfkey_supported_listp->supportedp->ias_ivlen;
+                               alg_ep->sadb_alg_minbits = pfkey_supported_listp->supportedp->ias_keyminbits;
+                               alg_ep->sadb_alg_maxbits = pfkey_supported_listp->supportedp->ias_keymaxbits;
+                               alg_ep->sadb_alg_reserved = 0;
+                               KLIPS_PRINT(debug_pfkey && sysctl_ipsec_debug_verbose,
+                                           "klips_debug:pfkey_register_reply: "
+                                           "adding encrypt=0p%p\n",
+                                           alg_ep);
+                               alg_ep++;
+                       }
+               }
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_register_reply: "
+                           "found satype=%d(%s) exttype=%d id=%d ivlen=%d minbits=%d maxbits=%d.\n",
+                           satype,
+                           satype2name(satype),
+                           pfkey_supported_listp->supportedp->ias_exttype,
+                           pfkey_supported_listp->supportedp->ias_id,
+                           pfkey_supported_listp->supportedp->ias_ivlen,
+                           pfkey_supported_listp->supportedp->ias_keyminbits,
+                           pfkey_supported_listp->supportedp->ias_keymaxbits);
+               pfkey_supported_listp = pfkey_supported_listp->next;
+       }
+       
+       if(!(pfkey_safe_build(error = pfkey_msg_hdr_build(&extensions_reply[0],
+                                                         SADB_REGISTER,
+                                                         satype,
+                                                         0,
+                                                         sadb_msg? sadb_msg->sadb_msg_seq : ++pfkey_msg_seq,
+                                                         sadb_msg? sadb_msg->sadb_msg_pid: current->pid),
+                             extensions_reply) &&
+            (alg_num_a ? pfkey_safe_build(error = pfkey_supported_build(&extensions_reply[SADB_EXT_SUPPORTED_AUTH],
+                                                                       SADB_EXT_SUPPORTED_AUTH,
+                                                                       alg_num_a,
+                                                                       alg_a),
+                                         extensions_reply) : 1) &&
+            (alg_num_e ? pfkey_safe_build(error = pfkey_supported_build(&extensions_reply[SADB_EXT_SUPPORTED_ENCRYPT],
+                                                                       SADB_EXT_SUPPORTED_ENCRYPT,
+                                                                       alg_num_e,
+                                                                       alg_e),
+                                         extensions_reply) : 1))) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_register_reply: "
+                           "failed to build the register message extensions_reply\n");
+               SENDERR(-error);
+       }
+       
+       if((error = pfkey_msg_build(&pfkey_reply, extensions_reply, EXT_BITS_OUT))) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_register_reply: "
+                           "failed to build the register message\n");
+               SENDERR(-error);
+       }
+       /* this should go to all registered sockets for that satype only */
+       for(pfkey_socketsp = pfkey_registered_sockets[satype];
+           pfkey_socketsp;
+           pfkey_socketsp = pfkey_socketsp->next) {
+               if((error = pfkey_upmsg(pfkey_socketsp->socketp, pfkey_reply))) {
+                       KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_register_reply: "
+                                   "sending up acquire message for satype=%d(%s) to socket=0p%p failed with error=%d.\n",
+                                   satype,
+                                   satype2name(satype),
+                                   pfkey_socketsp->socketp,
+                                   error);
+                       SENDERR(-error);
+               }
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_register_reply: "
+                           "sending up register message for satype=%d(%s) to socket=0p%p succeeded.\n",
+                           satype,
+                           satype2name(satype),
+                           pfkey_socketsp->socketp);
+       }
+       
+ errlab:
+       if(alg_a) {
+               kfree(alg_a);
+       }
+       if(alg_e) {
+               kfree(alg_e);
+       }
+
+       if (pfkey_reply) {
+               pfkey_msg_free(&pfkey_reply);
+       }
+       pfkey_extensions_free(extensions_reply);
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_expire_parse(struct sock *sk, struct sadb_ext **extensions, struct pfkey_extracted_data* extr)
+{
+       int error = 0;
+       struct socket_list *pfkey_socketsp;
+#ifdef CONFIG_KLIPS_DEBUG
+       uint8_t satype = ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_satype;
+#endif /* CONFIG_KLIPS_DEBUG */
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_expire_parse: .\n");
+
+       if(pfkey_open_sockets) {
+               for(pfkey_socketsp = pfkey_open_sockets;
+                   pfkey_socketsp;
+                   pfkey_socketsp = pfkey_socketsp->next) {
+                       if((error = pfkey_upmsg(pfkey_socketsp->socketp,
+                                               ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])))) {
+                               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_expire_parse: "
+                                           "sending up expire reply message for satype=%d(%s) to socket=0p%p failed with error=%d.\n",
+                                           satype,
+                                           satype2name(satype),
+                                           pfkey_socketsp->socketp,
+                                           error);
+                               SENDERR(-error);
+                       }
+                       KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_expire_parse: "
+                                   "sending up expire reply message for satype=%d(%s) to socket=0p%p succeeded.\n",
+                                   satype,
+                                   satype2name(satype),
+                                   pfkey_socketsp->socketp);
+               }
+       }
+
+ errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_flush_parse(struct sock *sk, struct sadb_ext **extensions, struct pfkey_extracted_data* extr)
+{
+       int error = 0;
+       struct socket_list *pfkey_socketsp;
+       uint8_t satype = ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_satype;
+       uint8_t proto = 0;
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_flush_parse: "
+                   "flushing type %d SAs\n",
+                   satype);
+
+       if(satype && !(proto = satype2proto(satype))) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_flush_parse: "
+                           "satype %d lookup failed.\n", 
+                           ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_satype);
+               SENDERR(EINVAL);
+       }
+
+       if ((error = ipsec_sadb_cleanup(proto))) {
+               SENDERR(-error);
+       }
+
+       if(pfkey_open_sockets) {
+               for(pfkey_socketsp = pfkey_open_sockets;
+                   pfkey_socketsp;
+                   pfkey_socketsp = pfkey_socketsp->next) {
+                       if((error = pfkey_upmsg(pfkey_socketsp->socketp,
+                                               ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])))) {
+                               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_flush_parse: "
+                                           "sending up flush reply message for satype=%d(%s) (proto=%d) to socket=0p%p failed with error=%d.\n",
+                                           satype,
+                                           satype2name(satype),
+                                           proto,
+                                           pfkey_socketsp->socketp,
+                                           error);
+                               SENDERR(-error);
+                       }
+                       KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_flush_parse: "
+                                   "sending up flush reply message for satype=%d(%s) to socket=0p%p succeeded.\n",
+                                   satype,
+                                   satype2name(satype),
+                                   pfkey_socketsp->socketp);
+               }
+       }
+
+ errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_dump_parse(struct sock *sk, struct sadb_ext **extensions, struct pfkey_extracted_data* extr)
+{
+       int error = 0;
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_dump_parse: .\n");
+
+       SENDERR(ENOSYS);
+ errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_x_promisc_parse(struct sock *sk, struct sadb_ext **extensions, struct pfkey_extracted_data* extr)
+{
+       int error = 0;
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_promisc_parse: .\n");
+
+       SENDERR(ENOSYS);
+ errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_x_pchange_parse(struct sock *sk, struct sadb_ext **extensions, struct pfkey_extracted_data* extr)
+{
+       int error = 0;
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_x_pchange_parse: .\n");
+
+       SENDERR(ENOSYS);
+ errlab:
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_x_grpsa_parse(struct sock *sk, struct sadb_ext **extensions, struct pfkey_extracted_data* extr)
+{
+       struct ipsec_sa *ips1p, *ips2p, *ipsp;
+       struct sadb_ext *extensions_reply[SADB_EXT_MAX+1];
+       struct sadb_msg *pfkey_reply = NULL;
+       struct socket_list *pfkey_socketsp;
+       uint8_t satype = ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_satype;
+       char sa1[SATOT_BUF], sa2[SATOT_BUF];
+       size_t sa_len1, sa_len2 = 0;
+       int error = 0;
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_x_grpsa_parse: .\n");
+
+       pfkey_extensions_init(extensions_reply);
+
+       if(extr == NULL || extr->ips == NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_x_grpsa_parse: "
+                           "extr or extr->ips is NULL, fatal.\n");
+               SENDERR(EINVAL);
+       }
+
+       sa_len1 = KLIPS_SATOT(debug_pfkey, &extr->ips->ips_said, 0, sa1, sizeof(sa1));
+       if(extr->ips2 != NULL) {
+               sa_len2 = KLIPS_SATOT(debug_pfkey, &extr->ips2->ips_said, 0, sa2, sizeof(sa2));
+       }
+
+       spin_lock_bh(&tdb_lock);
+
+       ips1p = ipsec_sa_getbyid(&(extr->ips->ips_said));
+       if(ips1p == NULL) {
+               spin_unlock_bh(&tdb_lock);
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_x_grpsa_parse: "
+                           "reserved ipsec_sa for SA1: %s not found.  Call SADB_ADD/UPDATE first.\n",
+                           sa_len1 ? sa1 : " (error)");
+               SENDERR(ENOENT);
+       }
+       if(extr->ips2) { /* GRPSA */
+               ips2p = ipsec_sa_getbyid(&(extr->ips2->ips_said));
+               if(ips2p == NULL) {
+                       ipsec_sa_put(ips1p);
+                       spin_unlock_bh(&tdb_lock);
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_x_grpsa_parse: "
+                                   "reserved ipsec_sa for SA2: %s not found.  Call SADB_ADD/UPDATE first.\n",
+                                   sa_len2 ? sa2 : " (error)");
+                       SENDERR(ENOENT);
+               }
+
+               /* Is either one already linked? */
+               if(ips1p->ips_onext) {
+                       ipsec_sa_put(ips1p);
+                       ipsec_sa_put(ips2p);
+                       spin_unlock_bh(&tdb_lock);
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_x_grpsa_parse: "
+                                   "ipsec_sa for SA: %s is already linked.\n",
+                                   sa_len1 ? sa1 : " (error)");
+                       SENDERR(EEXIST);
+               }
+               if(ips2p->ips_inext) {
+                       ipsec_sa_put(ips1p);
+                       ipsec_sa_put(ips2p);
+                       spin_unlock_bh(&tdb_lock);
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_x_grpsa_parse: "
+                                   "ipsec_sa for SA: %s is already linked.\n",
+                                   sa_len2 ? sa2 : " (error)");
+                       SENDERR(EEXIST);
+               }
+               
+               /* Is extr->ips already linked to extr->ips2? */
+               ipsp = ips2p;
+               while(ipsp) {
+                       if(ipsp == ips1p) {
+                               ipsec_sa_put(ips1p);
+                               ipsec_sa_put(ips2p);
+                               spin_unlock_bh(&tdb_lock);
+                               KLIPS_PRINT(debug_pfkey,
+                                           "klips_debug:pfkey_x_grpsa_parse: "
+                                           "ipsec_sa for SA: %s is already linked to %s.\n",
+                                           sa_len1 ? sa1 : " (error)",
+                                           sa_len2 ? sa2 : " (error)");
+                               SENDERR(EEXIST);
+                       }
+                       ipsp = ipsp->ips_onext;
+               }
+               
+               /* link 'em */
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_x_grpsa_parse: "
+                           "linking ipsec_sa SA: %s with %s.\n",
+                           sa_len1 ? sa1 : " (error)",
+                           sa_len2 ? sa2 : " (error)");
+               ips1p->ips_onext = ips2p;
+               ips2p->ips_inext = ips1p;
+       } else { /* UNGRPSA */
+               ipsec_sa_put(ips1p);
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_x_grpsa_parse: "
+                           "unlinking ipsec_sa SA: %s.\n",
+                           sa_len1 ? sa1 : " (error)");
+               while(ips1p->ips_onext) {
+                       ips1p = ips1p->ips_onext;
+               }
+               while(ips1p->ips_inext) {
+                       ipsp = ips1p;
+                       ips1p = ips1p->ips_inext;
+                       ipsec_sa_put(ips1p);
+                       ipsp->ips_inext = NULL;
+                       ipsec_sa_put(ipsp);
+                       ips1p->ips_onext = NULL;
+               }
+       }
+
+       spin_unlock_bh(&tdb_lock);
+
+       if(!(pfkey_safe_build(error = pfkey_msg_hdr_build(&extensions_reply[0],
+                                                         SADB_X_GRPSA,
+                                                         satype,
+                                                         0,
+                                                         ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_seq,
+                                                         ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_pid),
+                             extensions_reply)
+            && pfkey_safe_build(error = pfkey_sa_ref_build(&extensions_reply[SADB_EXT_SA],
+                                                       SADB_EXT_SA,
+                                                       extr->ips->ips_said.spi,
+                                                       extr->ips->ips_replaywin,
+                                                       extr->ips->ips_state,
+                                                       extr->ips->ips_authalg,
+                                                       extr->ips->ips_encalg,
+                                                       extr->ips->ips_flags,
+                                                       extr->ips->ips_ref),
+                                extensions_reply)
+            && pfkey_safe_build(error = pfkey_address_build(&extensions_reply[SADB_EXT_ADDRESS_DST],
+                                                            SADB_EXT_ADDRESS_DST,
+                                                            0, /*extr->ips->ips_said.proto,*/
+                                                            0,
+                                                            extr->ips->ips_addr_d),
+                                extensions_reply)
+            && (extr->ips2
+                ? (pfkey_safe_build(error = pfkey_x_satype_build(&extensions_reply[SADB_X_EXT_SATYPE2],
+                                                                 ((struct sadb_x_satype*)extensions[SADB_X_EXT_SATYPE2])->sadb_x_satype_satype
+                                                                 /* proto2satype(extr->ips2->ips_said.proto) */),
+                                                                 extensions_reply)
+                                    && pfkey_safe_build(error = pfkey_sa_ref_build(&extensions_reply[SADB_X_EXT_SA2],
+                                                                               SADB_X_EXT_SA2,
+                                                                               extr->ips2->ips_said.spi,
+                                                                               extr->ips2->ips_replaywin,
+                                                                               extr->ips2->ips_state,
+                                                                               extr->ips2->ips_authalg,
+                                                                               extr->ips2->ips_encalg,
+                                                                               extr->ips2->ips_flags,
+                                                                               extr->ips2->ips_ref),
+                                                        extensions_reply)
+                                    && pfkey_safe_build(error = pfkey_address_build(&extensions_reply[SADB_X_EXT_ADDRESS_DST2],
+                                                                                    SADB_X_EXT_ADDRESS_DST2,
+                                                                                    0, /*extr->ips->ips_said.proto,*/
+                                                                                    0,
+                                                                                    extr->ips2->ips_addr_d),
+                                                        extensions_reply) ) : 1 )
+                    )) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_x_grpsa_parse: "
+                           "failed to build the x_grpsa reply message extensions\n");
+               SENDERR(-error);
+       }
+          
+       if((error = pfkey_msg_build(&pfkey_reply, extensions_reply, EXT_BITS_OUT))) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_x_grpsa_parse: "
+                           "failed to build the x_grpsa reply message\n");
+               SENDERR(-error);
+       }
+       
+       for(pfkey_socketsp = pfkey_open_sockets;
+           pfkey_socketsp;
+           pfkey_socketsp = pfkey_socketsp->next) {
+               if((error = pfkey_upmsg(pfkey_socketsp->socketp, pfkey_reply))) {
+                       KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_x_grpsa_parse: "
+                                   "sending up x_grpsa reply message for satype=%d(%s) to socket=0p%p failed with error=%d.\n",
+                                   satype,
+                                   satype2name(satype),
+                                   pfkey_socketsp->socketp,
+                                   error);
+                       SENDERR(-error);
+               }
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_x_grpsa_parse: "
+                           "sending up x_grpsa reply message for satype=%d(%s) to socket=0p%p succeeded.\n",
+                           satype,
+                           satype2name(satype),
+                           pfkey_socketsp->socketp);
+       }
+       
+       KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_x_grpsa_parse: "
+                   "succeeded in sending x_grpsa reply message.\n");
+       
+ errlab:
+       if (pfkey_reply) {
+               pfkey_msg_free(&pfkey_reply);
+       }
+       pfkey_extensions_free(extensions_reply);
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_x_addflow_parse(struct sock *sk, struct sadb_ext **extensions, struct pfkey_extracted_data* extr)
+{
+       int error = 0;
+#ifdef CONFIG_KLIPS_DEBUG
+       char buf1[64], buf2[64];
+#endif /* CONFIG_KLIPS_DEBUG */
+       struct sadb_ext *extensions_reply[SADB_EXT_MAX+1];
+       struct sadb_msg *pfkey_reply = NULL;
+       struct socket_list *pfkey_socketsp;
+       uint8_t satype = ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_satype;
+       ip_address srcflow, dstflow, srcmask, dstmask;
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_x_addflow_parse: .\n");
+
+       pfkey_extensions_init(extensions_reply);
+
+       memset((caddr_t)&srcflow, 0, sizeof(srcflow));
+       memset((caddr_t)&dstflow, 0, sizeof(dstflow));
+       memset((caddr_t)&srcmask, 0, sizeof(srcmask));
+       memset((caddr_t)&dstmask, 0, sizeof(dstmask));
+
+       if(!extr || !(extr->ips) || !(extr->eroute)) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_x_addflow_parse: "
+                           "missing extr, ipsec_sa or eroute data.\n");
+               SENDERR(EINVAL);
+       }
+
+       srcflow.u.v4.sin_family = AF_INET;
+       dstflow.u.v4.sin_family = AF_INET;
+       srcmask.u.v4.sin_family = AF_INET;
+       dstmask.u.v4.sin_family = AF_INET;
+       srcflow.u.v4.sin_addr = extr->eroute->er_eaddr.sen_ip_src;
+       dstflow.u.v4.sin_addr = extr->eroute->er_eaddr.sen_ip_dst;
+       srcmask.u.v4.sin_addr = extr->eroute->er_emask.sen_ip_src;
+       dstmask.u.v4.sin_addr = extr->eroute->er_emask.sen_ip_dst;
+
+#ifdef CONFIG_KLIPS_DEBUG
+       if (debug_pfkey) {
+               subnettoa(extr->eroute->er_eaddr.sen_ip_src,
+                         extr->eroute->er_emask.sen_ip_src, 0, buf1, sizeof(buf1));
+               subnettoa(extr->eroute->er_eaddr.sen_ip_dst,
+                         extr->eroute->er_emask.sen_ip_dst, 0, buf2, sizeof(buf2));
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_x_addflow_parse: "
+                           "calling breakeroute and/or makeroute for %s->%s\n",
+                           buf1, buf2);
+       }
+#endif /* CONFIG_KLIPS_DEBUG */
+
+       if(extr->ips->ips_flags & SADB_X_SAFLAGS_INFLOW) {
+               struct ipsec_sa *ipsp, *ipsq;
+               char sa[SATOT_BUF];
+               size_t sa_len;
+
+               ipsq = ipsec_sa_getbyid(&(extr->ips->ips_said));
+               if(ipsq == NULL) {
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_x_addflow_parse: "
+                                   "ipsec_sa not found, cannot set incoming policy.\n");
+                       SENDERR(ENOENT);
+               }
+
+               ipsp = ipsq;
+               while(ipsp && ipsp->ips_said.proto != IPPROTO_IPIP) {
+                       ipsp = ipsp->ips_inext;
+               }
+
+               if(ipsp == NULL) {
+                       ipsec_sa_put(ipsq);
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_x_addflow_parse: "
+                                   "SA chain does not have an IPIP SA, cannot set incoming policy.\n");
+                       SENDERR(ENOENT);
+               }
+               
+               sa_len = KLIPS_SATOT(debug_pfkey, &extr->ips->ips_said, 0, sa, sizeof(sa));
+
+               ipsp->ips_flags |= SADB_X_SAFLAGS_INFLOW;
+               ipsp->ips_flow_s = srcflow;
+               ipsp->ips_flow_d = dstflow;
+               ipsp->ips_mask_s = srcmask;
+               ipsp->ips_mask_d = dstmask;
+
+               ipsec_sa_put(ipsq);
+
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_x_addflow_parse: "
+                           "inbound eroute, setting incoming policy information in IPIP ipsec_sa for SA: %s.\n",
+                           sa_len ? sa : " (error)");
+       } else {
+               struct sk_buff *first = NULL, *last = NULL;
+
+               if(extr->ips->ips_flags & SADB_X_SAFLAGS_REPLACEFLOW) {
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_x_addflow_parse: "
+                                   "REPLACEFLOW flag set, calling breakeroute.\n");
+                       if ((error = ipsec_breakroute(&(extr->eroute->er_eaddr),
+                                                     &(extr->eroute->er_emask),
+                                                     &first, &last))) {
+                               KLIPS_PRINT(debug_pfkey,
+                                           "klips_debug:pfkey_x_addflow_parse: "
+                                           "breakeroute returned %d.  first=0p%p, last=0p%p\n",
+                                           error,
+                                           first,
+                                           last);
+                               if(first != NULL) {
+                                       ipsec_kfree_skb(first);
+                               }
+                               if(last != NULL) {
+                                       ipsec_kfree_skb(last);
+                               }
+                               SENDERR(-error);
+                       }
+               }
+               
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_x_addflow_parse: "
+                           "calling makeroute.\n");
+               
+               if ((error = ipsec_makeroute(&(extr->eroute->er_eaddr),
+                                            &(extr->eroute->er_emask),
+                                            extr->ips->ips_said,
+                                            ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_pid,
+                                            NULL,
+                                            &(extr->ips->ips_ident_s),
+                                            &(extr->ips->ips_ident_d)))) {
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_x_addflow_parse: "
+                                   "makeroute returned %d.\n", error);
+                       SENDERR(-error);
+               }
+               if(first != NULL) {
+                       KLIPS_PRINT(debug_eroute,
+                                   "klips_debug:pfkey_x_addflow_parse: "
+                                   "first=0p%p HOLD packet re-injected.\n",
+                                   first);
+                       DEV_QUEUE_XMIT(first, first->dev, SOPRI_NORMAL);
+               }
+               if(last != NULL) {
+                       KLIPS_PRINT(debug_eroute,
+                                   "klips_debug:pfkey_x_addflow_parse: "
+                                   "last=0p%p HOLD packet re-injected.\n",
+                                   last);
+                       DEV_QUEUE_XMIT(last, last->dev, SOPRI_NORMAL);
+               }
+       }
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_x_addflow_parse: "
+                   "makeroute call successful.\n");
+
+       if(!(pfkey_safe_build(error = pfkey_msg_hdr_build(&extensions_reply[0],
+                                                         SADB_X_ADDFLOW,
+                                                         satype,
+                                                         0,
+                                                         ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_seq,
+                                                         ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_pid),
+                             extensions_reply)
+            && pfkey_safe_build(error = pfkey_sa_ref_build(&extensions_reply[SADB_EXT_SA],
+                                                       SADB_EXT_SA,
+                                                       extr->ips->ips_said.spi,
+                                                       extr->ips->ips_replaywin,
+                                                       extr->ips->ips_state,
+                                                       extr->ips->ips_authalg,
+                                                       extr->ips->ips_encalg,
+                                                       extr->ips->ips_flags,
+                                                       extr->ips->ips_ref),
+                                extensions_reply)
+            && (extensions[SADB_EXT_ADDRESS_SRC]
+                ? pfkey_safe_build(error = pfkey_address_build(&extensions_reply[SADB_EXT_ADDRESS_SRC],
+                                                               SADB_EXT_ADDRESS_SRC,
+                                                               0, /*extr->ips->ips_said.proto,*/
+                                                               0,
+                                                               extr->ips->ips_addr_s),
+                                   extensions_reply) : 1)
+            && (extensions[SADB_EXT_ADDRESS_DST]
+                ? pfkey_safe_build(error = pfkey_address_build(&extensions_reply[SADB_EXT_ADDRESS_DST],
+                                                               SADB_EXT_ADDRESS_DST,
+                                                               0, /*extr->ips->ips_said.proto,*/
+                                                               0,
+                                                               extr->ips->ips_addr_d),
+                                   extensions_reply) : 1)
+            && pfkey_safe_build(error = pfkey_address_build(&extensions_reply[SADB_X_EXT_ADDRESS_SRC_FLOW],
+                                                            SADB_X_EXT_ADDRESS_SRC_FLOW,
+                                                            0, /*extr->ips->ips_said.proto,*/
+                                                            0,
+                                                            (struct sockaddr*)&srcflow),
+                                extensions_reply)
+            && pfkey_safe_build(error = pfkey_address_build(&extensions_reply[SADB_X_EXT_ADDRESS_DST_FLOW],
+                                                            SADB_X_EXT_ADDRESS_DST_FLOW,
+                                                            0, /*extr->ips->ips_said.proto,*/
+                                                            0,
+                                                            (struct sockaddr*)&dstflow),
+                                extensions_reply)
+            && pfkey_safe_build(error = pfkey_address_build(&extensions_reply[SADB_X_EXT_ADDRESS_SRC_MASK],
+                                                            SADB_X_EXT_ADDRESS_SRC_MASK,
+                                                            0, /*extr->ips->ips_said.proto,*/
+                                                            0,
+                                                            (struct sockaddr*)&srcmask),
+                                extensions_reply)
+            && pfkey_safe_build(error = pfkey_address_build(&extensions_reply[SADB_X_EXT_ADDRESS_DST_MASK],
+                                                            SADB_X_EXT_ADDRESS_DST_MASK,
+                                                            0, /*extr->ips->ips_said.proto,*/
+                                                            0,
+                                                            (struct sockaddr*)&dstmask),
+                                extensions_reply)
+               )) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_x_addflow_parse: "
+                           "failed to build the x_addflow reply message extensions\n");
+               SENDERR(-error);
+       }
+               
+       if((error = pfkey_msg_build(&pfkey_reply, extensions_reply, EXT_BITS_OUT))) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_x_addflow_parse: "
+                           "failed to build the x_addflow reply message\n");
+               SENDERR(-error);
+       }
+       
+       for(pfkey_socketsp = pfkey_open_sockets;
+           pfkey_socketsp;
+           pfkey_socketsp = pfkey_socketsp->next) {
+               if((error = pfkey_upmsg(pfkey_socketsp->socketp, pfkey_reply))) {
+                       KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_x_addflow_parse: "
+                                   "sending up x_addflow reply message for satype=%d(%s) to socket=0p%p failed with error=%d.\n",
+                                   satype,
+                                   satype2name(satype),
+                                   pfkey_socketsp->socketp,
+                                   error);
+                       SENDERR(-error);
+               }
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_x_addflow_parse: "
+                           "sending up x_addflow reply message for satype=%d(%s) (proto=%d) to socket=0p%p succeeded.\n",
+                           satype,
+                           satype2name(satype),
+                           extr->ips->ips_said.proto,
+                           pfkey_socketsp->socketp);
+       }
+       
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_x_addflow_parse: "
+                   "extr->ips cleaned up and freed.\n");
+
+ errlab:
+       if (pfkey_reply) {
+               pfkey_msg_free(&pfkey_reply);
+       }
+       pfkey_extensions_free(extensions_reply);
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_x_delflow_parse(struct sock *sk, struct sadb_ext **extensions, struct pfkey_extracted_data* extr)
+{
+       int error = 0;
+#ifdef CONFIG_KLIPS_DEBUG
+       char buf1[64], buf2[64];
+#endif /* CONFIG_KLIPS_DEBUG */
+       struct sadb_ext *extensions_reply[SADB_EXT_MAX+1];
+       struct sadb_msg *pfkey_reply = NULL;
+       struct socket_list *pfkey_socketsp;
+       uint8_t satype = ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_satype;
+       ip_address srcflow, dstflow, srcmask, dstmask;
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_x_delflow_parse: .\n");
+
+       pfkey_extensions_init(extensions_reply);
+
+       memset((caddr_t)&srcflow, 0, sizeof(srcflow));
+       memset((caddr_t)&dstflow, 0, sizeof(dstflow));
+       memset((caddr_t)&srcmask, 0, sizeof(srcmask));
+       memset((caddr_t)&dstmask, 0, sizeof(dstmask));
+
+       if(!extr || !(extr->ips)) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_x_delflow_parse: "
+                           "extr, or extr->ips is NULL, fatal\n");
+               SENDERR(EINVAL);
+       }
+
+       if(extr->ips->ips_flags & SADB_X_SAFLAGS_CLEARFLOW) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_x_delflow_parse: "
+                           "CLEARFLOW flag set, calling cleareroutes.\n");
+               if ((error = ipsec_cleareroutes()))
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_x_delflow_parse: "
+                                   "cleareroutes returned %d.\n", error);
+                       SENDERR(-error);
+       } else {
+               struct sk_buff *first = NULL, *last = NULL;
+
+               if(!(extr->eroute)) {
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_x_delflow_parse: "
+                                   "extr->eroute is NULL, fatal.\n");
+                       SENDERR(EINVAL);
+               }
+               
+               srcflow.u.v4.sin_family = AF_INET;
+               dstflow.u.v4.sin_family = AF_INET;
+               srcmask.u.v4.sin_family = AF_INET;
+               dstmask.u.v4.sin_family = AF_INET;
+               srcflow.u.v4.sin_addr = extr->eroute->er_eaddr.sen_ip_src;
+               dstflow.u.v4.sin_addr = extr->eroute->er_eaddr.sen_ip_dst;
+               srcmask.u.v4.sin_addr = extr->eroute->er_emask.sen_ip_src;
+               dstmask.u.v4.sin_addr = extr->eroute->er_emask.sen_ip_dst;
+
+#ifdef CONFIG_KLIPS_DEBUG
+               if (debug_pfkey) {
+                       subnettoa(extr->eroute->er_eaddr.sen_ip_src,
+                                 extr->eroute->er_emask.sen_ip_src, 0, buf1, sizeof(buf1));
+                       subnettoa(extr->eroute->er_eaddr.sen_ip_dst,
+                                 extr->eroute->er_emask.sen_ip_dst, 0, buf2, sizeof(buf2));
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_x_delflow_parse: "
+                                   "calling breakeroute for %s->%s\n",
+                                   buf1, buf2);
+               }
+#endif /* CONFIG_KLIPS_DEBUG */
+               error = ipsec_breakroute(&(extr->eroute->er_eaddr),
+                                            &(extr->eroute->er_emask),
+                                            &first, &last);
+               if(error) {
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_x_delflow_parse: "
+                                   "breakeroute returned %d.  first=0p%p, last=0p%p\n",
+                                   error,
+                                   first,
+                                   last);
+               }
+               if(first != NULL) {
+                       ipsec_kfree_skb(first);
+               }
+               if(last != NULL) {
+                       ipsec_kfree_skb(last);
+               }
+               if(error) {
+                       SENDERR(-error);
+               }
+       }
+       
+       if(!(pfkey_safe_build(error = pfkey_msg_hdr_build(&extensions_reply[0],
+                                                         SADB_X_DELFLOW,
+                                                         satype,
+                                                         0,
+                                                         ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_seq,
+                                                         ((struct sadb_msg*)extensions[SADB_EXT_RESERVED])->sadb_msg_pid),
+                             extensions_reply)
+            && pfkey_safe_build(error = pfkey_sa_ref_build(&extensions_reply[SADB_EXT_SA],
+                                                       SADB_EXT_SA,
+                                                       extr->ips->ips_said.spi,
+                                                       extr->ips->ips_replaywin,
+                                                       extr->ips->ips_state,
+                                                       extr->ips->ips_authalg,
+                                                       extr->ips->ips_encalg,
+                                                       extr->ips->ips_flags,
+                                                       extr->ips->ips_ref),
+                                extensions_reply)
+            && pfkey_safe_build(error = pfkey_address_build(&extensions_reply[SADB_X_EXT_ADDRESS_SRC_FLOW],
+                                                            SADB_X_EXT_ADDRESS_SRC_FLOW,
+                                                            0, /*extr->ips->ips_said.proto,*/
+                                                            0,
+                                                            (struct sockaddr*)&srcflow),
+                                extensions_reply)
+            && pfkey_safe_build(error = pfkey_address_build(&extensions_reply[SADB_X_EXT_ADDRESS_DST_FLOW],
+                                                            SADB_X_EXT_ADDRESS_DST_FLOW,
+                                                            0, /*extr->ips->ips_said.proto,*/
+                                                            0,
+                                                            (struct sockaddr*)&dstflow),
+                                extensions_reply)
+            && pfkey_safe_build(error = pfkey_address_build(&extensions_reply[SADB_X_EXT_ADDRESS_SRC_MASK],
+                                                            SADB_X_EXT_ADDRESS_SRC_MASK,
+                                                            0, /*extr->ips->ips_said.proto,*/
+                                                            0,
+                                                            (struct sockaddr*)&srcmask),
+                                extensions_reply)
+            && pfkey_safe_build(error = pfkey_address_build(&extensions_reply[SADB_X_EXT_ADDRESS_DST_MASK],
+                                                            SADB_X_EXT_ADDRESS_DST_MASK,
+                                                            0, /*extr->ips->ips_said.proto,*/
+                                                            0,
+                                                            (struct sockaddr*)&dstmask),
+                                extensions_reply)
+               )) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_x_delflow_parse: "
+                           "failed to build the x_delflow reply message extensions\n");
+               SENDERR(-error);
+       }
+               
+       if((error = pfkey_msg_build(&pfkey_reply, extensions_reply, EXT_BITS_OUT))) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_x_delflow_parse: "
+                           "failed to build the x_delflow reply message\n");
+               SENDERR(-error);
+       }
+       
+       for(pfkey_socketsp = pfkey_open_sockets;
+           pfkey_socketsp;
+           pfkey_socketsp = pfkey_socketsp->next) {
+               if((error = pfkey_upmsg(pfkey_socketsp->socketp, pfkey_reply))) {
+                       KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_x_delflow_parse: "
+                                   "sending up x_delflow reply message for satype=%d(%s) to socket=0p%p failed with error=%d.\n",
+                                   satype,
+                                   satype2name(satype),
+                                   pfkey_socketsp->socketp,
+                                   error);
+                       SENDERR(-error);
+               }
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_x_delflow_parse: "
+                           "sending up x_delflow reply message for satype=%d(%s) to socket=0p%p succeeded.\n",
+                           satype,
+                           satype2name(satype),
+                           pfkey_socketsp->socketp);
+       }
+       
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_x_delflow_parse: "
+                   "extr->ips cleaned up and freed.\n");
+
+ errlab:
+       if (pfkey_reply) {
+               pfkey_msg_free(&pfkey_reply);
+       }
+       pfkey_extensions_free(extensions_reply);
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_x_msg_debug_parse(struct sock *sk, struct sadb_ext **extensions, struct pfkey_extracted_data* extr)
+{
+       int error = 0;
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_x_msg_debug_parse: .\n");
+
+/* errlab:*/
+       return error;
+}
+
+/* pfkey_expire expects the ipsec_sa table to be locked before being called. */
+int
+pfkey_expire(struct ipsec_sa *ipsp, int hard)
+{
+       struct sadb_ext *extensions[SADB_EXT_MAX+1];
+       struct sadb_msg *pfkey_msg = NULL;
+       struct socket_list *pfkey_socketsp;
+       int error = 0;
+       uint8_t satype;
+
+       pfkey_extensions_init(extensions);
+
+       if(!(satype = proto2satype(ipsp->ips_said.proto))) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_expire: "
+                           "satype lookup for protocol %d lookup failed.\n", 
+                           ipsp->ips_said.proto);
+               SENDERR(EINVAL);
+       }
+       
+       if(!pfkey_open_sockets) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_expire: "
+                           "no sockets listening.\n");
+               SENDERR(EPROTONOSUPPORT);
+       }
+
+       if (!(pfkey_safe_build(error = pfkey_msg_hdr_build(&extensions[0],
+                                                          SADB_EXPIRE,
+                                                          satype,
+                                                          0,
+                                                          ++pfkey_msg_seq,
+                                                          0),
+                              extensions)
+             && pfkey_safe_build(error = pfkey_sa_ref_build(&extensions[SADB_EXT_SA],
+                                                        SADB_EXT_SA,
+                                                        ipsp->ips_said.spi,
+                                                        ipsp->ips_replaywin,
+                                                        ipsp->ips_state,
+                                                        ipsp->ips_authalg,
+                                                        ipsp->ips_encalg,
+                                                        ipsp->ips_flags,
+                                                        ipsp->ips_ref),
+                                 extensions)
+             && pfkey_safe_build(error = pfkey_lifetime_build(&extensions[SADB_EXT_LIFETIME_CURRENT],
+                                                              SADB_EXT_LIFETIME_CURRENT,
+                                                              ipsp->ips_life.ipl_allocations.ipl_count,
+                                                              ipsp->ips_life.ipl_bytes.ipl_count,
+                                                              ipsp->ips_life.ipl_addtime.ipl_count,
+                                                              ipsp->ips_life.ipl_usetime.ipl_count,
+                                                              ipsp->ips_life.ipl_packets.ipl_count),
+                                 extensions)
+             && (hard ? 
+                 pfkey_safe_build(error = pfkey_lifetime_build(&extensions[SADB_EXT_LIFETIME_HARD],
+                                                               SADB_EXT_LIFETIME_HARD,
+                                                               ipsp->ips_life.ipl_allocations.ipl_hard,
+                                                               ipsp->ips_life.ipl_bytes.ipl_hard,
+                                                               ipsp->ips_life.ipl_addtime.ipl_hard,
+                                                               ipsp->ips_life.ipl_usetime.ipl_hard,
+                                                               ipsp->ips_life.ipl_packets.ipl_hard),
+                                  extensions)
+                 : pfkey_safe_build(error = pfkey_lifetime_build(&extensions[SADB_EXT_LIFETIME_SOFT],
+                                                                 SADB_EXT_LIFETIME_SOFT,
+                                                                 ipsp->ips_life.ipl_allocations.ipl_soft,
+                                                                 ipsp->ips_life.ipl_bytes.ipl_soft,
+                                                                 ipsp->ips_life.ipl_addtime.ipl_soft,
+                                                                 ipsp->ips_life.ipl_usetime.ipl_soft,
+                                                                 ipsp->ips_life.ipl_packets.ipl_soft),
+                                    extensions))
+             && pfkey_safe_build(error = pfkey_address_build(&extensions[SADB_EXT_ADDRESS_SRC],
+                                                             SADB_EXT_ADDRESS_SRC,
+                                                             0, /* ipsp->ips_said.proto, */
+                                                             0,
+                                                             ipsp->ips_addr_s),
+                                 extensions)
+             && pfkey_safe_build(error = pfkey_address_build(&extensions[SADB_EXT_ADDRESS_DST],
+                                                             SADB_EXT_ADDRESS_DST,
+                                                             0, /* ipsp->ips_said.proto, */
+                                                             0,
+                                                             ipsp->ips_addr_d),
+                                 extensions))) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_expire: "
+                           "failed to build the expire message extensions\n");
+               spin_unlock(&tdb_lock);
+               goto errlab;
+       }
+       
+       if ((error = pfkey_msg_build(&pfkey_msg, extensions, EXT_BITS_OUT))) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_expire: "
+                           "failed to build the expire message\n");
+               SENDERR(-error);
+       }
+       
+       for(pfkey_socketsp = pfkey_open_sockets;
+           pfkey_socketsp;
+           pfkey_socketsp = pfkey_socketsp->next) {
+               if((error = pfkey_upmsg(pfkey_socketsp->socketp, pfkey_msg))) {
+                       KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_expire: "
+                                   "sending up expire message for satype=%d(%s) to socket=0p%p failed with error=%d.\n",
+                                   satype,
+                                   satype2name(satype),
+                                   pfkey_socketsp->socketp,
+                                   error);
+                       SENDERR(-error);
+               }
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_expire: "
+                           "sending up expire message for satype=%d(%s) (proto=%d) to socket=0p%p succeeded.\n",
+                           satype,
+                           satype2name(satype),
+                           ipsp->ips_said.proto,
+                           pfkey_socketsp->socketp);
+       }
+       
+ errlab:
+       if (pfkey_msg) {
+               pfkey_msg_free(&pfkey_msg);
+       }
+       pfkey_extensions_free(extensions);
+       return error;
+}
+
+int
+pfkey_acquire(struct ipsec_sa *ipsp)
+{
+       struct sadb_ext *extensions[SADB_EXT_MAX+1];
+       struct sadb_msg *pfkey_msg = NULL;
+       struct socket_list *pfkey_socketsp;
+       int error = 0;
+       struct sadb_comb comb[] = {
+               /* auth; encrypt; flags; */
+               /* auth_minbits; auth_maxbits; encrypt_minbits; encrypt_maxbits; */
+               /* reserved; soft_allocations; hard_allocations; soft_bytes; hard_bytes; */
+               /* soft_addtime; hard_addtime; soft_usetime; hard_usetime; */
+               /* soft_packets; hard_packets; */
+               { SADB_AALG_MD5HMAC,  SADB_EALG_3DESCBC, SADB_SAFLAGS_PFS,
+                 128, 128, 168, 168,
+                 0, 0, 0, 0, 0,
+                 57600, 86400, 57600, 86400,
+                 0, 0 },
+               { SADB_AALG_SHA1HMAC, SADB_EALG_3DESCBC, SADB_SAFLAGS_PFS,
+                 160, 160, 168, 168,
+                 0, 0, 0, 0, 0,
+                 57600, 86400, 57600, 86400,
+                 0, 0 }
+       };
+       
+       /* XXX This should not be hard-coded.  It should be taken from the spdb */
+       uint8_t satype = SADB_SATYPE_ESP;
+
+       pfkey_extensions_init(extensions);
+
+       if((satype == 0) || (satype > SADB_SATYPE_MAX)) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_acquire: "
+                           "SAtype=%d unspecified or unknown.\n",
+                           satype);
+               SENDERR(EINVAL);
+       }
+
+       if(!(pfkey_registered_sockets[satype])) {
+               KLIPS_PRINT(1|debug_pfkey, "klips_debug:pfkey_acquire: "
+                           "no sockets registered for SAtype=%d(%s).\n",
+                           satype,
+                           satype2name(satype));
+               SENDERR(EPROTONOSUPPORT);
+       }
+       
+       if (!(pfkey_safe_build(error = pfkey_msg_hdr_build(&extensions[0],
+                                                         SADB_ACQUIRE,
+                                                         satype,
+                                                         0,
+                                                         ++pfkey_msg_seq,
+                                                         0),
+                             extensions)
+             && pfkey_safe_build(error = pfkey_address_build(&extensions[SADB_EXT_ADDRESS_SRC],
+                                                             SADB_EXT_ADDRESS_SRC,
+                                                             ipsp->ips_transport_protocol,
+                                                             0,
+                                                             ipsp->ips_addr_s),
+                                 extensions)
+             && pfkey_safe_build(error = pfkey_address_build(&extensions[SADB_EXT_ADDRESS_DST],
+                                                             SADB_EXT_ADDRESS_DST,
+                                                             ipsp->ips_transport_protocol,
+                                                             0,
+                                                             ipsp->ips_addr_d),
+                                 extensions)
+#if 0
+             && (ipsp->ips_addr_p
+                 ? pfkey_safe_build(error = pfkey_address_build(&extensions[SADB_EXT_ADDRESS_PROXY],
+                                                                SADB_EXT_ADDRESS_PROXY,
+                                                                ipsp->ips_transport_protocol,
+                                                                0,
+                                                                ipsp->ips_addr_p),
+                                    extensions) : 1)
+#endif
+             && (ipsp->ips_ident_s.type != SADB_IDENTTYPE_RESERVED
+                 ? pfkey_safe_build(error = pfkey_ident_build(&extensions[SADB_EXT_IDENTITY_SRC],
+                                                              SADB_EXT_IDENTITY_SRC,
+                                                              ipsp->ips_ident_s.type,
+                                                              ipsp->ips_ident_s.id,
+                                                              ipsp->ips_ident_s.len,
+                                                              ipsp->ips_ident_s.data),
+                                    extensions) : 1)
+
+             && (ipsp->ips_ident_d.type != SADB_IDENTTYPE_RESERVED
+                 ? pfkey_safe_build(error = pfkey_ident_build(&extensions[SADB_EXT_IDENTITY_DST],
+                                                              SADB_EXT_IDENTITY_DST,
+                                                              ipsp->ips_ident_d.type,
+                                                              ipsp->ips_ident_d.id,
+                                                              ipsp->ips_ident_d.len,
+                                                              ipsp->ips_ident_d.data),
+                                    extensions) : 1)
+#if 0
+             /* FIXME: This won't work yet because I have not finished
+                it. */
+             && (ipsp->ips_sens_
+                 ? pfkey_safe_build(error = pfkey_sens_build(&extensions[SADB_EXT_SENSITIVITY],
+                                                             ipsp->ips_sens_dpd,
+                                                             ipsp->ips_sens_sens_level,
+                                                             ipsp->ips_sens_sens_len,
+                                                             ipsp->ips_sens_sens_bitmap,
+                                                             ipsp->ips_sens_integ_level,
+                                                             ipsp->ips_sens_integ_len,
+                                                             ipsp->ips_sens_integ_bitmap),
+                                    extensions) : 1)
+#endif
+             && pfkey_safe_build(error = pfkey_prop_build(&extensions[SADB_EXT_PROPOSAL],
+                                                          64, /* replay */
+                                                          sizeof(comb)/sizeof(struct sadb_comb),
+                                                          &(comb[0])),
+                                 extensions)
+               )) {
+               KLIPS_PRINT(1|debug_pfkey, "klips_debug:pfkey_acquire: "
+                           "failed to build the acquire message extensions\n");
+               SENDERR(-error);
+       }
+       
+       if ((error = pfkey_msg_build(&pfkey_msg, extensions, EXT_BITS_OUT))) {
+               KLIPS_PRINT(1|debug_pfkey, "klips_debug:pfkey_acquire: "
+                           "failed to build the acquire message\n");
+               SENDERR(-error);
+       }
+
+#ifdef KLIPS_PFKEY_ACQUIRE_LOSSAGE
+#  if KLIPS_PFKEY_ACQUIRE_LOSSAGE > 0
+       if(sysctl_ipsec_regress_pfkey_lossage) {
+               return(0);
+       }
+#  endif
+#endif
+       
+       /* this should go to all registered sockets for that satype only */
+       for(pfkey_socketsp = pfkey_registered_sockets[satype];
+           pfkey_socketsp;
+           pfkey_socketsp = pfkey_socketsp->next) {
+               if((error = pfkey_upmsg(pfkey_socketsp->socketp, pfkey_msg))) {
+                       KLIPS_PRINT(1|debug_pfkey, "klips_debug:pfkey_acquire: "
+                                   "sending up acquire message for satype=%d(%s) to socket=0p%p failed with error=%d.\n",
+                                   satype,
+                                   satype2name(satype),
+                                   pfkey_socketsp->socketp,
+                                   error);
+                       SENDERR(-error);
+               }
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_acquire: "
+                           "sending up acquire message for satype=%d(%s) to socket=0p%p succeeded.\n",
+                           satype,
+                           satype2name(satype),
+                           pfkey_socketsp->socketp);
+       }
+       
+ errlab:
+       if (pfkey_msg) {
+               pfkey_msg_free(&pfkey_msg);
+       }
+       pfkey_extensions_free(extensions);
+       return error;
+}
+
+#ifdef CONFIG_IPSEC_NAT_TRAVERSAL
+int
+pfkey_nat_t_new_mapping(struct ipsec_sa *ipsp, struct sockaddr *ipaddr,
+       __u16 sport)
+{
+       struct sadb_ext *extensions[SADB_EXT_MAX+1];
+       struct sadb_msg *pfkey_msg = NULL;
+       struct socket_list *pfkey_socketsp;
+       int error = 0;
+       uint8_t satype = (ipsp->ips_said.proto==IPPROTO_ESP) ? SADB_SATYPE_ESP : 0;
+
+       /* Construct SADB_X_NAT_T_NEW_MAPPING message */
+
+       pfkey_extensions_init(extensions);
+
+       if((satype == 0) || (satype > SADB_SATYPE_MAX)) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_nat_t_new_mapping: "
+                           "SAtype=%d unspecified or unknown.\n",
+                           satype);
+               SENDERR(EINVAL);
+       }
+
+       if(!(pfkey_registered_sockets[satype])) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_nat_t_new_mapping: "
+                           "no sockets registered for SAtype=%d(%s).\n",
+                           satype,
+                           satype2name(satype));
+               SENDERR(EPROTONOSUPPORT);
+       }
+
+       if (!(pfkey_safe_build
+               (error = pfkey_msg_hdr_build(&extensions[0], SADB_X_NAT_T_NEW_MAPPING,
+                       satype, 0, ++pfkey_msg_seq, 0), extensions)
+               /* SA */
+               && pfkey_safe_build
+               (error = pfkey_sa_build(&extensions[SADB_EXT_SA],
+                       SADB_EXT_SA, ipsp->ips_said.spi, 0, 0, 0, 0, 0), extensions)
+               /* ADDRESS_SRC = old addr */
+               && pfkey_safe_build
+               (error = pfkey_address_build(&extensions[SADB_EXT_ADDRESS_SRC],
+                       SADB_EXT_ADDRESS_SRC, ipsp->ips_said.proto, 0, ipsp->ips_addr_s),
+                       extensions)
+               /* NAT_T_SPORT = old port */
+           && pfkey_safe_build
+               (error = pfkey_x_nat_t_port_build(&extensions[SADB_X_EXT_NAT_T_SPORT],
+                       SADB_X_EXT_NAT_T_SPORT, ipsp->ips_natt_sport), extensions)
+               /* ADDRESS_DST = new addr */
+               && pfkey_safe_build
+               (error = pfkey_address_build(&extensions[SADB_EXT_ADDRESS_DST],
+                       SADB_EXT_ADDRESS_DST, ipsp->ips_said.proto, 0, ipaddr), extensions)
+               /* NAT_T_DPORT = new port */
+           && pfkey_safe_build
+               (error = pfkey_x_nat_t_port_build(&extensions[SADB_X_EXT_NAT_T_DPORT],
+                       SADB_X_EXT_NAT_T_DPORT, sport), extensions)
+               )) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_nat_t_new_mapping: "
+                           "failed to build the nat_t_new_mapping message extensions\n");
+               SENDERR(-error);
+       }
+       
+       if ((error = pfkey_msg_build(&pfkey_msg, extensions, EXT_BITS_OUT))) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_nat_t_new_mapping: "
+                           "failed to build the nat_t_new_mapping message\n");
+               SENDERR(-error);
+       }
+
+       /* this should go to all registered sockets for that satype only */
+       for(pfkey_socketsp = pfkey_registered_sockets[satype];
+           pfkey_socketsp;
+           pfkey_socketsp = pfkey_socketsp->next) {
+               if((error = pfkey_upmsg(pfkey_socketsp->socketp, pfkey_msg))) {
+                       KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_nat_t_new_mapping: "
+                                   "sending up nat_t_new_mapping message for satype=%d(%s) to socket=%p failed with error=%d.\n",
+                                   satype,
+                                   satype2name(satype),
+                                   pfkey_socketsp->socketp,
+                                   error);
+                       SENDERR(-error);
+               }
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_nat_t_new_mapping: "
+                           "sending up nat_t_new_mapping message for satype=%d(%s) to socket=%p succeeded.\n",
+                           satype,
+                           satype2name(satype),
+                           pfkey_socketsp->socketp);
+       }
+       
+ errlab:
+       if (pfkey_msg) {
+               pfkey_msg_free(&pfkey_msg);
+       }
+       pfkey_extensions_free(extensions);
+       return error;
+}
+
+DEBUG_NO_STATIC int
+pfkey_x_nat_t_new_mapping_parse(struct sock *sk, struct sadb_ext **extensions, struct pfkey_extracted_data* extr)
+{
+       /* SADB_X_NAT_T_NEW_MAPPING not used in kernel */
+       return -EINVAL;
+}
+#endif
+
+DEBUG_NO_STATIC int (*ext_processors[SADB_EXT_MAX+1])(struct sadb_ext *pfkey_ext, struct pfkey_extracted_data* extr) =
+{
+  NULL, /* pfkey_msg_process, */
+        pfkey_sa_process,
+        pfkey_lifetime_process,
+        pfkey_lifetime_process,
+        pfkey_lifetime_process,
+        pfkey_address_process,
+        pfkey_address_process,
+        pfkey_address_process,
+        pfkey_key_process,
+        pfkey_key_process,
+        pfkey_ident_process,
+        pfkey_ident_process,
+        pfkey_sens_process,
+        pfkey_prop_process,
+        pfkey_supported_process,
+        pfkey_supported_process,
+        pfkey_spirange_process,
+        pfkey_x_kmprivate_process,
+        pfkey_x_satype_process,
+        pfkey_sa_process,
+        pfkey_address_process,
+        pfkey_address_process,
+        pfkey_address_process,
+        pfkey_address_process,
+        pfkey_address_process,
+       pfkey_x_debug_process,
+       pfkey_x_protocol_process
+#ifdef CONFIG_IPSEC_NAT_TRAVERSAL
+       ,
+       pfkey_x_nat_t_type_process,
+       pfkey_x_nat_t_port_process,
+       pfkey_x_nat_t_port_process,
+       pfkey_address_process
+#endif 
+};
+
+
+DEBUG_NO_STATIC int (*msg_parsers[SADB_MAX +1])(struct sock *sk, struct sadb_ext *extensions[], struct pfkey_extracted_data* extr)
+ =
+{
+       NULL, /* RESERVED */
+       pfkey_getspi_parse,
+       pfkey_update_parse,
+       pfkey_add_parse,
+       pfkey_delete_parse,
+       pfkey_get_parse,
+       pfkey_acquire_parse,
+       pfkey_register_parse,
+       pfkey_expire_parse,
+       pfkey_flush_parse,
+       pfkey_dump_parse,
+       pfkey_x_promisc_parse,
+       pfkey_x_pchange_parse,
+       pfkey_x_grpsa_parse,
+       pfkey_x_addflow_parse,
+       pfkey_x_delflow_parse,
+       pfkey_x_msg_debug_parse
+#ifdef CONFIG_IPSEC_NAT_TRAVERSAL
+       , pfkey_x_nat_t_new_mapping_parse
+#endif 
+};
+
+int
+pfkey_build_reply(struct sadb_msg *pfkey_msg,
+                 struct pfkey_extracted_data *extr,
+                 struct sadb_msg **pfkey_reply)
+{
+       struct sadb_ext *extensions[SADB_EXT_MAX+1];
+       int error = 0;
+       int msg_type = pfkey_msg->sadb_msg_type;
+       int seq = pfkey_msg->sadb_msg_seq;
+
+       KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_build_reply: "
+                   "building reply with type: %d\n",
+                   msg_type);
+       pfkey_extensions_init(extensions);
+       if (!extr || !extr->ips) {
+                       KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_build_reply: "
+                                   "bad ipsec_sa passed\n");
+                       return EINVAL;
+       }
+       error = pfkey_safe_build(pfkey_msg_hdr_build(&extensions[0],
+                                                    msg_type,
+                                                    proto2satype(extr->ips->ips_said.proto),
+                                                    0,
+                                                    seq,
+                                                    pfkey_msg->sadb_msg_pid),
+                                extensions) &&
+               (!(extensions_bitmaps[EXT_BITS_OUT][EXT_BITS_REQ][msg_type] &
+                  1 << SADB_EXT_SA)
+                || pfkey_safe_build(pfkey_sa_ref_build(&extensions[SADB_EXT_SA],
+                                                   SADB_EXT_SA,
+                                                   extr->ips->ips_said.spi,
+                                                   extr->ips->ips_replaywin,
+                                                   extr->ips->ips_state,
+                                                   extr->ips->ips_authalg,
+                                                   extr->ips->ips_encalg,
+                                                   extr->ips->ips_flags,
+                                                   extr->ips->ips_ref),
+                                    extensions)) &&
+               (!(extensions_bitmaps[EXT_BITS_OUT][EXT_BITS_REQ][msg_type] &
+                  1 << SADB_EXT_LIFETIME_CURRENT)
+                || pfkey_safe_build(pfkey_lifetime_build(&extensions
+                                                         [SADB_EXT_LIFETIME_CURRENT],
+                                                         SADB_EXT_LIFETIME_CURRENT,
+                                                         extr->ips->ips_life.ipl_allocations.ipl_count,
+                                                         extr->ips->ips_life.ipl_bytes.ipl_count,
+                                                         extr->ips->ips_life.ipl_addtime.ipl_count,
+                                                         extr->ips->ips_life.ipl_usetime.ipl_count,
+                                                         extr->ips->ips_life.ipl_packets.ipl_count),
+                                    extensions)) &&
+               (!(extensions_bitmaps[EXT_BITS_OUT][EXT_BITS_REQ][msg_type] &
+                  1 << SADB_EXT_ADDRESS_SRC)
+                || pfkey_safe_build(pfkey_address_build(&extensions[SADB_EXT_ADDRESS_SRC],
+                                                        SADB_EXT_ADDRESS_SRC,
+                                                        extr->ips->ips_said.proto,
+                                                        0,
+                                                        extr->ips->ips_addr_s),
+                                    extensions)) &&
+               (!(extensions_bitmaps[EXT_BITS_OUT][EXT_BITS_REQ][msg_type] &
+                  1 << SADB_EXT_ADDRESS_DST)
+                || pfkey_safe_build(pfkey_address_build(&extensions[SADB_EXT_ADDRESS_DST],
+                                                        SADB_EXT_ADDRESS_DST,
+                                                        extr->ips->ips_said.proto,
+                                                        0,
+                                                        extr->ips->ips_addr_d),
+                                    extensions));
+
+       if (error == 0) {
+               KLIPS_PRINT(debug_pfkey, "klips_debug:pfkey_build_reply: "
+                           "building extensions failed\n");
+               return EINVAL;
+       }
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_build_reply: "
+                   "built extensions, proceed to build the message\n");
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_build_reply: "
+                   "extensions[1]=0p%p\n",
+                   extensions[1]);
+       error = pfkey_msg_build(pfkey_reply, extensions, EXT_BITS_OUT);
+       pfkey_extensions_free(extensions);
+
+       return error;
+}
+
+int
+pfkey_msg_interp(struct sock *sk, struct sadb_msg *pfkey_msg,
+                               struct sadb_msg **pfkey_reply)
+{
+       int error = 0;
+       int i;
+       struct sadb_ext *extensions[SADB_EXT_MAX+1];
+       struct pfkey_extracted_data extr = {NULL, NULL, NULL};
+       
+       pfkey_extensions_init(extensions);
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_msg_interp: "
+                   "parsing message ver=%d, type=%d, errno=%d, satype=%d(%s), len=%d, res=%d, seq=%d, pid=%d.\n", 
+                   pfkey_msg->sadb_msg_version,
+                   pfkey_msg->sadb_msg_type,
+                   pfkey_msg->sadb_msg_errno,
+                   pfkey_msg->sadb_msg_satype,
+                   satype2name(pfkey_msg->sadb_msg_satype),
+                   pfkey_msg->sadb_msg_len,
+                   pfkey_msg->sadb_msg_reserved,
+                   pfkey_msg->sadb_msg_seq,
+                   pfkey_msg->sadb_msg_pid);
+       
+       extr.ips = ipsec_sa_alloc(&error); /* pass in error var by pointer */
+       if(extr.ips == NULL) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_msg_interp: "
+                           "memory allocation error.\n");
+               SENDERR(-error);
+       }
+
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_msg_interp: "
+                   "allocated extr->ips=0p%p.\n",
+                   extr.ips);
+       
+       if(pfkey_msg->sadb_msg_satype > SADB_SATYPE_MAX) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_msg_interp: "
+                           "satype %d > max %d\n", 
+                           pfkey_msg->sadb_msg_satype,
+                           SADB_SATYPE_MAX);
+               SENDERR(EINVAL);
+       }
+       
+       switch(pfkey_msg->sadb_msg_type) {
+       case SADB_GETSPI:
+       case SADB_UPDATE:
+       case SADB_ADD:
+       case SADB_DELETE:
+       case SADB_X_GRPSA:
+       case SADB_X_ADDFLOW:
+               if(!(extr.ips->ips_said.proto = satype2proto(pfkey_msg->sadb_msg_satype))) {
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_msg_interp: "
+                                   "satype %d lookup failed.\n", 
+                                   pfkey_msg->sadb_msg_satype);
+                       SENDERR(EINVAL);
+               } else {
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_msg_interp: "
+                                   "satype %d lookups to proto=%d.\n", 
+                                   pfkey_msg->sadb_msg_satype,
+                                   extr.ips->ips_said.proto);
+               }
+               break;
+       default:
+               break;
+       }
+       
+       /* The NULL below causes the default extension parsers to be used */
+       /* Parse the extensions */
+       if((error = pfkey_msg_parse(pfkey_msg, NULL, extensions, EXT_BITS_IN)))
+       {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_msg_interp: "
+                           "message parsing failed with error %d.\n",
+                           error); 
+               SENDERR(-error);
+       }
+       
+       /* Process the extensions */
+       for(i=1; i <= SADB_EXT_MAX;i++) {
+               if(extensions[i] != NULL) {
+                       KLIPS_PRINT(debug_pfkey,
+                                   "klips_debug:pfkey_msg_interp: "
+                                   "processing ext %d 0p%p with processor 0p%p.\n", 
+                                   i, extensions[i], ext_processors[i]);
+                       if((error = ext_processors[i](extensions[i], &extr))) {
+                               KLIPS_PRINT(debug_pfkey,
+                                           "klips_debug:pfkey_msg_interp: "
+                                           "extension processing for type %d failed with error %d.\n",
+                                           i,
+                                           error); 
+                               SENDERR(-error);
+                       }
+                       
+               }
+               
+       }
+       
+       /* Parse the message types */
+       KLIPS_PRINT(debug_pfkey,
+                   "klips_debug:pfkey_msg_interp: "
+                   "parsing message type %d(%s) with msg_parser 0p%p.\n",
+                   pfkey_msg->sadb_msg_type,
+                   pfkey_v2_sadb_type_string(pfkey_msg->sadb_msg_type),
+                   msg_parsers[pfkey_msg->sadb_msg_type]); 
+       if((error = msg_parsers[pfkey_msg->sadb_msg_type](sk, extensions, &extr))) {
+               KLIPS_PRINT(debug_pfkey,
+                           "klips_debug:pfkey_msg_interp: "
+                           "message parsing failed with error %d.\n",
+                           error); 
+               SENDERR(-error);
+       }
+
+#if 0
+       error = pfkey_build_reply(pfkey_msg, &extr, pfkey_reply);
+       if (error) {
+               *pfkey_reply = NULL;
+       }
+#endif 
+ errlab:
+       if(extr.ips != NULL) {
+               ipsec_sa_wipe(extr.ips);
+       }
+       if(extr.ips2 != NULL) {
+               ipsec_sa_wipe(extr.ips2);
+       }
+       if (extr.eroute != NULL) {
+               kfree(extr.eroute);
+       }
+       return(error);
+}
+
+/*
+ * $Log: pfkey_v2_parser.c,v $
+ * Revision 1.134.2.4  2007-10-30 21:40:36  paul
+ * Fix for KLIPS_PFKEY_ACQUIRE_LOSSAGE [dhr]
+ *
+ * Revision 1.134.2.3  2007/09/05 02:56:10  paul
+ * Use the new ipsec_kversion macros by David to deal with 2.6.22 kernels.
+ * Fixes based on David McCullough patch.
+ *
+ * Revision 1.134.2.2  2006/10/06 21:39:26  paul
+ * Fix for 2.6.18+ only include linux/config.h if AUTOCONF_INCLUDED is not
+ * set. This is defined through autoconf.h which is included through the
+ * linux kernel build macros.
+ *
+ * Revision 1.134.2.1  2006/05/01 14:37:25  mcr
+ * ip_chk_addr -> inet_addr_type for more direct 2.4/2.6 support.
+ *
+ * Revision 1.134  2005/05/11 01:48:20  mcr
+ *     removed "poor-man"s OOP in favour of proper C structures.
+ *
+ * Revision 1.133  2005/04/29 05:10:22  mcr
+ *     removed from extraenous includes to make unit testing easier.
+ *
+ * Revision 1.132  2005/04/14 20:56:24  mcr
+ *     moved (pfkey_)ipsec_sa_init to ipsec_sa.c.
+ *
+ * Revision 1.131  2005/01/26 00:50:35  mcr
+ *     adjustment of confusion of CONFIG_IPSEC_NAT vs CONFIG_KLIPS_NAT,
+ *     and make sure that NAT_TRAVERSAL is set as well to match
+ *     userspace compiles of code.
+ *
+ * Revision 1.130  2004/09/08 17:21:36  ken
+ * Rename MD5* -> osMD5 functions to prevent clashes with other symbols exported by kernel modules (CIFS in 2.6 initiated this)
+ *
+ * Revision 1.129  2004/09/06 18:36:30  mcr
+ *     if a protocol can not be found, then log it. This is not
+ *     debugging.
+ *
+ * Revision 1.128  2004/08/21 00:45:19  mcr
+ *     CONFIG_KLIPS_NAT was wrong, also need to include udp.h.
+ *
+ * Revision 1.127  2004/08/20 21:45:45  mcr
+ *     CONFIG_KLIPS_NAT_TRAVERSAL is not used in an attempt to
+ *     be 26sec compatible. But, some defines where changed.
+ *
+ * Revision 1.126  2004/08/17 03:27:23  mcr
+ *     klips 2.6 edits.
+ *
+ * Revision 1.125  2004/08/04 15:57:07  mcr
+ *     moved des .h files to include/des/ *
+ *     included 2.6 protocol specific things
+ *     started at NAT-T support, but it will require a kernel patch.
+ *
+ * Revision 1.124  2004/07/10 19:11:18  mcr
+ *     CONFIG_IPSEC -> CONFIG_KLIPS.
+ *
+ * Revision 1.123  2004/04/06 02:49:26  mcr
+ *     pullup of algo code from alg-branch.
+ *
+ * Revision 1.122.2.2  2004/04/05 04:30:46  mcr
+ *     patches for alg-branch to compile/work with 2.x openswan
+ *
+ * Revision 1.122.2.1  2003/12/22 15:25:52  jjo
+ * . Merged algo-0.8.1-rc11-test1 into alg-branch
+ *
+ * Revision 1.122  2003/12/10 01:14:27  mcr
+ *     NAT-traversal patches to KLIPS.
+ *
+ * Revision 1.121  2003/10/31 02:27:55  mcr
+ *     pulled up port-selector patches and sa_id elimination.
+ *
+ * Revision 1.120.4.2  2003/10/29 01:30:41  mcr
+ *     elimited "struct sa_id".
+ *
+ * Revision 1.120.4.1  2003/09/21 13:59:56  mcr
+ *     pre-liminary X.509 patch - does not yet pass tests.
+ *
+ * Revision 1.120  2003/04/03 17:38:09  rgb
+ * Centralised ipsec_kfree_skb and ipsec_dev_{get,put}.
+ *
+ * Revision 1.119  2003/02/06 01:52:37  rgb
+ * Removed no longer relevant comment
+ *
+ * Revision 1.118  2003/01/30 02:32:44  rgb
+ *
+ * Transmit error code through to caller from callee for better diagnosis of problems.
+ *
+ * Revision 1.117  2003/01/16 18:48:13  rgb
+ *
+ * Fixed sign bug in error return from an sa allocation call in
+ * pfkey_msg_interp.
+ *
+ * Revision 1.116  2002/10/17 16:38:01  rgb
+ * Change pfkey_alloc_eroute() to never static since its consumers
+ * have been moved outside the file.
+ *
+ * Revision 1.115  2002/10/12 23:11:53  dhr
+ *
+ * [KenB + DHR] more 64-bit cleanup
+ *
+ * Revision 1.114  2002/10/05 05:02:58  dhr
+ *
+ * C labels go on statements
+ *
+ * Revision 1.113  2002/09/30 19:11:22  rgb
+ *     Turn on debugging for upgoing acquire messages to test for reliability.
+ *
+ * Revision 1.112  2002/09/20 15:41:16  rgb
+ * Switch from pfkey_alloc_ipsec_sa() to ipsec_sa_alloc().
+ * Added sadb_x_sa_ref to struct sadb_sa.
+ * Added ref parameter to pfkey_sa_build().
+ *
+ * Revision 1.111  2002/09/20 05:02:08  rgb
+ * Added memory allocation debugging.
+ * Convert to switch to divulge hmac keys for debugging.
+ * Added text labels to elucidate numeric values presented.
+ *
+ * Revision 1.110  2002/08/03 18:03:05  mcr
+ *     loop that checks for SPI's to have been already linked
+ *     fails to actually step to next pointer, but continuously
+ *     resets to head of list. Wrong pointer used.
+ *     test east-icmp-02 revealed this.
+ *
+ * Revision 1.109  2002/07/26 08:48:31  rgb
+ * Added SA ref table code.
+ *
+ * Revision 1.108  2002/05/27 18:55:03  rgb
+ * Remove final vistiges of tdb references via IPSEC_KLIPS1_COMPAT.
+ *
+ * Revision 1.107  2002/05/23 07:16:08  rgb
+ * Added ipsec_sa_put() for releasing an ipsec_sa refcount.
+ * Pointer clean-up.
+ * Added refcount code.
+ *
+ * Revision 1.106  2002/05/14 02:34:13  rgb
+ * Converted reference from ipsec_sa_put to ipsec_sa_add to avoid confusion
+ * with "put" usage in the kernel.
+ * Change all references to tdb, TDB or Tunnel Descriptor Block to ips,
+ * ipsec_sa or ipsec_sa.
+ * Moved all the extension parsing functions to pfkey_v2_ext_process.c.
+ *
+ * Revision 1.105  2002/04/24 07:55:32  mcr
+ *     #include patches and Makefiles for post-reorg compilation.
+ *
+ * Revision 1.104  2002/04/24 07:36:34  mcr
+ * Moved from ./klips/net/ipsec/pfkey_v2_parser.c,v
+ *
+ * Revision 1.103  2002/04/20 00:12:25  rgb
+ * Added esp IV CBC attack fix, disabled.
+ *
+ * Revision 1.102  2002/03/08 01:15:17  mcr
+ *     put some internal structure only debug messages behind
+ *     && sysctl_ipsec_debug_verbose.
+ *
+ * Revision 1.101  2002/01/29 17:17:57  mcr
+ *     moved include of ipsec_param.h to after include of linux/kernel.h
+ *     otherwise, it seems that some option that is set in ipsec_param.h
+ *     screws up something subtle in the include path to kernel.h, and
+ *     it complains on the snprintf() prototype.
+ *
+ * Revision 1.100  2002/01/29 04:00:54  mcr
+ *     more excise of kversions.h header.
+ *
+ * Revision 1.99  2002/01/29 02:13:19  mcr
+ *     introduction of ipsec_kversion.h means that include of
+ *     ipsec_param.h must preceed any decisions about what files to
+ *     include to deal with differences in kernel source.
+ *
+ * Revision 1.98  2002/01/12 02:57:57  mcr
+ *     first regression test causes acquire messages to be lost
+ *     100% of the time. This is to help testing of pluto.
+ *
+ * Revision 1.97  2001/11/26 09:23:52  rgb
+ * Merge MCR's ipsec_sa, eroute, proc and struct lifetime changes.
+ *
+ * Revision 1.93.2.4  2001/10/23 04:20:27  mcr
+ *     parity was forced on wrong structure! prototypes help here.
+ *
+ * Revision 1.93.2.3  2001/10/22 21:14:59  mcr
+ *     include des.h, removed phony prototypes and fixed calling
+ *     conventions to match real prototypes.
+ *
+ * Revision 1.93.2.2  2001/10/15 05:39:03  mcr
+ *     %08lx is not the right format for u32. Use %08x. 64-bit safe? ha.
+ *
+ * Revision 1.93.2.1  2001/09/25 02:30:14  mcr
+ *     struct tdb -> struct ipsec_sa.
+ *     use new lifetime structure. common format routines for debug.
+ *
+ * Revision 1.96  2001/11/06 20:47:54  rgb
+ * Fixed user context call to ipsec_dev_start_xmit() bug.  Call
+ * dev_queue_xmit() instead.
+ *
+ * Revision 1.95  2001/11/06 19:47:46  rgb
+ * Added packet parameter to lifetime and comb structures.
+ *
+ * Revision 1.94  2001/10/18 04:45:23  rgb
+ * 2.4.9 kernel deprecates linux/malloc.h in favour of linux/slab.h,
+ * lib/freeswan.h version macros moved to lib/kversions.h.
+ * Other compiler directive cleanups.
+ *
+ * Revision 1.93  2001/09/20 15:32:59  rgb
+ * Min/max cleanup.
+ *
+ * Revision 1.92  2001/09/19 16:35:48  rgb
+ * PF_KEY ident fix for getspi from NetCelo (puttdb duplication).
+ *
+ * Revision 1.91  2001/09/15 16:24:06  rgb
+ * Re-inject first and last HOLD packet when an eroute REPLACE is done.
+ *
+ * Revision 1.90  2001/09/14 16:58:38  rgb
+ * Added support for storing the first and last packets through a HOLD.
+ *
+ * Revision 1.89  2001/09/08 21:14:07  rgb
+ * Added pfkey ident extension support for ISAKMPd. (NetCelo)
+ * Better state coherency (error management) between pf_key and IKE daemon.
+ * (NetCelo)
+ *
+ * Revision 1.88  2001/08/27 19:42:44  rgb
+ * Fix memory leak of encrypt and auth structs in pfkey register.
+ *
+ * Revision 1.87  2001/07/06 19:50:46  rgb
+ * Removed unused debugging code.
+ * Added inbound policy checking code for IPIP SAs.
+ *
+ * Revision 1.86  2001/06/20 06:26:04  rgb
+ * Changed missing SA errors from EEXIST to ENOENT and added debug output
+ * for already linked SAs.
+ *
+ * Revision 1.85  2001/06/15 04:57:02  rgb
+ * Remove single error return condition check and check for all errors in
+ * the case of a replace eroute delete operation.  This means that
+ * applications must expect to be deleting something before replacing it
+ * and if nothing is found, complain.
+ *
+ * Revision 1.84  2001/06/14 19:35:12  rgb
+ * Update copyright date.
+ *
+ * Revision 1.83  2001/06/12 00:03:19  rgb
+ * Silence debug set/unset under normal conditions.
+ *
+ * Revision 1.82  2001/05/30 08:14:04  rgb
+ * Removed vestiges of esp-null transforms.
+ *
+ * Revision 1.81  2001/05/27 06:12:12  rgb
+ * Added structures for pid, packet count and last access time to eroute.
+ * Added packet count to beginning of /proc/net/ipsec_eroute.
+ *
+ * Revision 1.80  2001/05/03 19:43:59  rgb
+ * Check error return codes for all build function calls.
+ * Standardise on SENDERR() macro.
+ *
+ * Revision 1.79  2001/04/20 21:09:16  rgb
+ * Cleaned up fixed tdbwipes.
+ * Free pfkey_reply and clean up extensions_reply for grpsa, addflow and
+ * delflow (Per Cederqvist) plugging memleaks.
+ *
+ * Revision 1.78  2001/04/19 19:02:39  rgb
+ * Fixed extr.tdb freeing, stealing it for getspi, update and add.
+ * Refined a couple of spinlocks, fixed the one in update.
+ *
+ * Revision 1.77  2001/04/18 20:26:16  rgb
+ * Wipe/free eroute and both tdbs from extr at end of pfkey_msg_interp()
+ * instead of inside each message type parser.  This fixes two memleaks.
+ *
+ * Revision 1.76  2001/04/17 23:51:18  rgb
+ * Quiet down pfkey_x_debug_process().
+ *
+ * Revision 1.75  2001/03/29 01:55:05  rgb
+ * Fixed pfkey key init memleak.
+ * Fixed pfkey encryption key debug output.
+ *
+ * Revision 1.74  2001/03/27 05:29:14  rgb
+ * Debug output cleanup/silencing.
+ *
+ * Revision 1.73  2001/02/28 05:03:28  rgb
+ * Clean up and rationalise startup messages.
+ *
+ * Revision 1.72  2001/02/27 22:24:56  rgb
+ * Re-formatting debug output (line-splitting, joining, 1arg/line).
+ * Check for satoa() return codes.
+ *
+ * Revision 1.71  2001/02/27 06:59:30  rgb
+ * Added satype2name() conversions most places satype is debug printed.
+ *
+ * Revision 1.70  2001/02/26 22:37:08  rgb
+ * Fixed 'unknown proto' INT bug in new code.
+ * Added satype to protocol debugging instrumentation.
+ *
+ * Revision 1.69  2001/02/26 19:57:51  rgb
+ * Re-formatted debug output (split lines, consistent spacing).
+ * Fixed as yet undetected FLUSH bug which called ipsec_tdbcleanup()
+ * with an satype instead of proto.
+ * Checked for satype consistency and fixed minor bugs.
+ * Fixed undetected ungrpspi bug that tried to upmsg a second tdb.
+ * Check for satype sanity in pfkey_expire().
+ * Added satype sanity check to addflow.
+ *
+ * Revision 1.68  2001/02/12 23:14:40  rgb
+ * Remove double spin lock in pfkey_expire().
+ *
+ * Revision 1.67  2001/01/31 19:23:40  rgb
+ * Fixed double-unlock bug introduced by grpsa upmsg (found by Lars Heete).
+ *
+ * Revision 1.66  2001/01/29 22:20:04  rgb
+ * Fix minor add upmsg lifetime bug.
+ *
+ * Revision 1.65  2001/01/24 06:12:33  rgb
+ * Fixed address extension compile bugs just introduced.
+ *
+ * Revision 1.64  2001/01/24 00:31:15  rgb
+ * Added upmsg for addflow/delflow.
+ *
+ * Revision 1.63  2001/01/23 22:02:55  rgb
+ * Added upmsg to x_grpsa.
+ * Fixed lifetimes extentions to add/update/get upmsg.
+ *
+ * Revision 1.62  2000/11/30 21:47:51  rgb
+ * Fix error return bug after returning from pfkey_tdb_init().
+ *
+ * Revision 1.61  2000/11/17 18:10:29  rgb
+ * Fixed bugs mostly relating to spirange, to treat all spi variables as
+ * network byte order since this is the way PF_KEYv2 stored spis.
+ *
+ * Revision 1.60  2000/11/06 04:34:53  rgb
+ * Changed non-exported functions to DEBUG_NO_STATIC.
+ * Add Svenning's adaptive content compression.
+ * Ditched spin_lock_irqsave in favour of spin_lock/_bh.
+ * Fixed double unlock bug (Svenning).
+ * Fixed pfkey_msg uninitialized bug in pfkey_{expire,acquire}().
+ * Fixed incorrect extension type (prop) in pfkey)acquire().
+ *
+ * Revision 1.59  2000/10/11 15:25:12  rgb
+ * Fixed IPCOMP disabled compile bug.
+ *
+ * Revision 1.58  2000/10/11 14:54:03  rgb
+ * Fixed pfkey_acquire() satype to SADB_SATYPE_ESP and removed pfkey
+ * protocol violations of setting pfkey_address_build() protocol parameter
+ * to non-zero except in the case of pfkey_acquire().
+ *
+ * Revision 1.57  2000/10/10 20:10:18  rgb
+ * Added support for debug_ipcomp and debug_verbose to klipsdebug.
+ *
+ * Revision 1.56  2000/10/06 20:24:36  rgb
+ * Fixes to pfkey_acquire to initialize extensions[] and use correct
+ * ipproto.
+ *
+ * Revision 1.55  2000/10/03 03:20:57  rgb
+ * Added brackets to get a?b:c scope right for pfkey_register reply.
+ *
+ * Revision 1.54  2000/09/29 19:49:30  rgb
+ * As-yet-unused-bits cleanup.
+ *
+ * Revision 1.53  2000/09/28 00:35:45  rgb
+ * Padded SATYPE printout in pfkey_register for vertical alignment.
+ *
+ * Revision 1.52  2000/09/20 16:21:58  rgb
+ * Cleaned up ident string alloc/free.
+ *
+ * Revision 1.51  2000/09/20 04:04:20  rgb
+ * Changed static functions to DEBUG_NO_STATIC to reveal function names in
+ * oopsen.
+ *
+ * Revision 1.50  2000/09/16 01:10:53  rgb
+ * Fixed unused var warning with debug off.
+ *
+ * Revision 1.49  2000/09/15 11:37:02  rgb
+ * Merge in heavily modified Svenning Soerensen's <svenning@post5.tele.dk>
+ * IPCOMP zlib deflate code.
+ *
+ * Revision 1.48  2000/09/15 04:57:57  rgb
+ * Cleaned up existing IPCOMP code before svenning addition.
+ * Initialize pfkey_reply and extensions_reply in case of early error in
+ * message parsing functions (thanks Kai!).
+ *
+ * Revision 1.47  2000/09/13 08:02:56  rgb
+ * Added KMd registration notification.
+ *
+ * Revision 1.46  2000/09/12 22:35:36  rgb
+ * Restructured to remove unused extensions from CLEARFLOW messages.
+ *
+ * Revision 1.45  2000/09/12 03:24:23  rgb
+ * Converted #if0 debugs to sysctl.
+ *
+ * Revision 1.44  2000/09/09 06:38:39  rgb
+ * Correct SADB message type for update, add and delete.
+ *
+ * Revision 1.43  2000/09/08 19:19:56  rgb
+ * Change references from DEBUG_IPSEC to CONFIG_IPSEC_DEBUG.
+ * Removed all references to CONFIG_IPSEC_PFKEYv2.
+ * Put in sanity checks in most msg type parsers to catch invalid satypes
+ * and empty socket lists.
+ * Moved spin-locks in pfkey_get_parse() to simplify.
+ * Added pfkey_acquire().
+ * Added upwards messages to update, add, delete, acquire_parse,
+ * expire_parse and flush.
+ * Fix pfkey_prop_build() parameter to be only single indirection.
+ * Changed all replies to use pfkey_reply.
+ * Check return code on puttdb() and deltdbchain() in getspi, update,
+ * add, delete.
+ * Fixed up all pfkey replies to open and registered sockets.
+ *
+ * Revision 1.42  2000/09/01 18:50:26  rgb
+ * Added a supported algorithms array lists, one per satype and registered
+ * existing algorithms.
+ * Fixed pfkey_list_{insert,remove}_{socket,support}() to allow change to
+ * list.
+ * Only send pfkey_expire() messages to sockets registered for that satype.
+ * Added reply to pfkey_getspi_parse().
+ * Added reply to pfkey_get_parse().
+ * Fixed debug output label bug in pfkey_lifetime_process().
+ * Cleaned up pfkey_sa_process a little.
+ * Moved pfkey_safe_build() above message type parsers to make it available
+ * for creating replies.
+ * Added comments for future work in pfkey_acquire_parse().
+ * Fleshed out guts of pfkey_register_parse().
+ *
+ * Revision 1.41  2000/08/24 16:58:11  rgb
+ * Fixed key debugging variables.
+ * Fixed error return code for a failed search.
+ * Changed order of pfkey_get operations.
+ *
+ * Revision 1.40  2000/08/21 16:32:27  rgb
+ * Re-formatted for cosmetic consistency and readability.
+ *
+ * Revision 1.39  2000/08/20 21:38:57  rgb
+ * Bugfixes to as-yet-unused pfkey_update_parse() and
+ * pfkey_register_parse(). (Momchil)
+ * Added functions pfkey_safe_build(), pfkey_expire() and
+ * pfkey_build_reply(). (Momchil)
+ * Added a pfkey_reply parameter to pfkey_msg_interp(). (Momchil)
+ *
+ * Revision 1.38  2000/08/18 21:30:41  rgb
+ * Purged all tdb_spi, tdb_proto and tdb_dst macros.  They are unclear.
+ *
+ * Revision 1.37  2000/08/18 18:18:02  rgb
+ * Cosmetic and descriptive changes made to debug test.
+ * getspi and update fixes from Momchil.
+ *
+ * Revision 1.36  2000/08/15 15:41:55  rgb
+ * Fixed the (as yet unused and untested) pfkey_getspi() routine.
+ *
+ * Revision 1.35  2000/08/01 14:51:52  rgb
+ * Removed _all_ remaining traces of DES.
+ *
+ * Revision 1.34  2000/07/28 14:58:32  rgb
+ * Changed kfree_s to kfree, eliminating extra arg to fix 2.4.0-test5.
+ *
+ * Revision 1.33  2000/06/28 05:50:11  rgb
+ * Actually set iv_bits.
+ *
+ * Revision 1.32  2000/05/30 18:36:56  rgb
+ * Fix AH auth hash setup bug.  This breaks interop with previous PF_KEY
+ * FreeS/WAN, but fixes interop with other implementations.
+ *
+ * Revision 1.31  2000/03/16 14:05:48  rgb
+ * Fixed brace scope preventing non-debug compile.
+ * Added null parameter check for pfkey_x_debug().
+ *
+ * Revision 1.30  2000/01/22 23:21:13  rgb
+ * Use new function satype2proto().
+ *
+ * Revision 1.29  2000/01/22 08:40:21  rgb
+ * Invert condition to known value to avoid AF_INET6 in 2.0.36.
+ *
+ * Revision 1.28  2000/01/22 07:58:57  rgb
+ * Fixed REPLACEFLOW bug, missing braces around KLIPS_PRINT *and* SENDERR.
+ *
+ * Revision 1.27  2000/01/22 03:48:01  rgb
+ * Added extr pointer component debugging.
+ *
+ * Revision 1.26  2000/01/21 09:41:25  rgb
+ * Changed a (void*) to (char*) cast to do proper pointer math.
+ * Don't call tdbwipe if tdb2 is NULL.
+ *
+ * Revision 1.25  2000/01/21 06:21:01  rgb
+ * Added address cases for eroute flows.
+ * Tidied up compiler directive indentation for readability.
+ * Added ictx,octx vars for simplification.
+ * Added macros for HMAC padding magic numbers.
+ * Converted from double tdb arguments to one structure (extr)
+ * containing pointers to all temporary information structures
+ * and checking for valid arguments to all ext processors and
+ * msg type parsers.
+ * Added spiungrp'ing.
+ * Added klipsdebug switching capability.
+ * Removed sa_process() check for zero protocol.
+ * Added address case for DST2 for grouping.
+ * Added/changed minor debugging instrumentation.
+ * Fixed spigrp for single said, ungrouping case.
+ * Added code to parse addflow and delflow messages.
+ * Removed redundant statements duplicating tdbwipe() functionality
+ * and causing double kfrees.
+ * Permit addflow to have a protocol of 0.
+ *
+ * Revision 1.24  1999/12/09 23:23:00  rgb
+ * Added check to pfkey_sa_process() to do eroutes.
+ * Converted to DIVUP() macro.
+ * Converted if() to switch() in pfkey_register_parse().
+ * Use new pfkey_extensions_init() instead of memset().
+ *
+ * Revision 1.23  1999/12/01 22:18:13  rgb
+ * Preset minspi and maxspi values in case and spirange extension is not
+ * included and check for the presence of an spirange extension before
+ * using it.  Initialise tdb_sastate to LARVAL.
+ * Fixed debugging output typo.
+ * Fixed authentication context initialisation bugs (4 places).
+ *
+ * Revision 1.22  1999/11/27 11:53:08  rgb
+ * Moved pfkey_msg_parse prototype to pfkey.h
+ * Moved exts_permitted/required prototype to pfkey.h.
+ * Moved sadb_satype2proto protocol lookup table to lib/pfkey_v2_parse.c.
+ * Deleted SADB_X_EXT_SA2 code from pfkey_sa_process() since it will never
+ * be called.
+ * Moved protocol/algorithm checks to lib/pfkey_v2_parse.c
+ * Debugging error messages added.
+ * Enable lifetime_current checking.
+ * Remove illegal requirement for SA extension to be present in an
+ * originating GETSPI call.
+ * Re-instate requirement for UPDATE or ADD message to be MATURE.
+ * Add argument to pfkey_msg_parse() for direction.
+ * Fixed IPIP dst address bug and purged redundant, leaky code.
+ *
+ * Revision 1.21  1999/11/24 05:24:20  rgb
+ * hanged 'void*extensions' to 'struct sadb_ext*extensions'.
+ * Fixed indention.
+ * Ditched redundant replay check.
+ * Fixed debug message text from 'parse' to 'process'.
+ * Added more debug output.
+ * Forgot to zero extensions array causing bug, fixed.
+ *
+ * Revision 1.20  1999/11/23 23:08:13  rgb
+ * Move all common parsing code to lib/pfkey_v2_parse.c and rename
+ * remaining bits to *_process. (PJO)
+ * Add macros for dealing with alignment and rounding up more opaquely.
+ * Use provided macro ADDRTOA_BUF instead of hardcoded value.
+ * Sort out pfkey and freeswan headers, putting them in a library path.
+ * Corrected a couple of bugs in as-yet-inactive code.
+ *
+ * Revision 1.19  1999/11/20 22:01:10  rgb
+ * Add more descriptive error messages for non-zero reserved fields.
+ * Add more descriptive error message for spirange parsing.
+ * Start on supported extension parsing.
+ * Start on register and get message parsing.
+ *
+ * Revision 1.18  1999/11/18 04:09:20  rgb
+ * Replaced all kernel version macros to shorter, readable form.
+ *
+ * Revision 1.17  1999/11/17 15:53:41  rgb
+ * Changed all occurrences of #include "../../../lib/freeswan.h"
+ * to #include <freeswan.h> which works due to -Ilibfreeswan in the
+ * klips/net/ipsec/Makefile.
+ *
+ * Revision 1.16  1999/10/26 16:57:43  rgb
+ * Add shorter macros for compiler directives to visually clean-up.
+ * Give ipv6 code meaningful compiler directive.
+ * Add comments to other #if 0 debug code.
+ * Remove unused *_bh_atomic() calls.
+ * Fix mis-placed spinlock.
+ *
+ * Revision 1.15  1999/10/16 18:27:10  rgb
+ * Clean-up unused cruft.
+ * Fix-up lifetime_allocations_c and lifetime_addtime_c initialisations.
+ *
+ * Revision 1.14  1999/10/08 18:37:34  rgb
+ * Fix end-of-line spacing to sate whining PHMs.
+ *
+ * Revision 1.13  1999/10/03 18:49:12  rgb
+ * Spinlock fixes for 2.0.xx and 2.3.xx.
+ *
+ * Revision 1.12  1999/10/01 15:44:54  rgb
+ * Move spinlock header include to 2.1> scope.
+ *
+ * Revision 1.11  1999/10/01 00:05:45  rgb
+ * Added tdb structure locking.
+ * Use 'jiffies' instead of do_get_timeofday().
+ * Fix lifetime assignments.
+ *
+ * Revision 1.10  1999/09/21 15:24:45  rgb
+ * Rework spirange code to save entropy and prevent endless loops.
+ *
+ * Revision 1.9  1999/09/16 12:10:21  rgb
+ * Minor fixes to random spi selection for correctness and entropy conservation.
+ *
+ * Revision 1.8  1999/05/25 22:54:46  rgb
+ * Fix comparison that should be an assignment in an if.
+ *
+ * Revision 1.7  1999/05/09 03:25:37  rgb
+ * Fix bug introduced by 2.2 quick-and-dirty patch.
+ *
+ * Revision 1.6  1999/05/08 21:32:30  rgb
+ * Fix error return reporting.
+ *
+ * Revision 1.5  1999/05/05 22:02:33  rgb
+ * Add a quick and dirty port to 2.2 kernels by Marc Boucher <marc@mbsi.ca>.
+ *
+ * Revision 1.4  1999/04/29 15:22:40  rgb
+ * Standardise an error return method.
+ * Add debugging instrumentation.
+ * Add check for existence of macros min/max.
+ * Add extensions permitted/required in/out filters.
+ * Add satype-to-protocol table.
+ * Add a second tdb pointer to each parser to accomodate GRPSA.
+ * Move AH & no_algo_set to GETSPI, UPDATE and ADD.
+ * Add OOO window check.
+ * Add support for IPPROTO_IPIP and hooks for IPPROTO_COMP.
+ * Add timestamp to lifetime parse.
+ * Fix address structure length checking bug.
+ * Fix address structure allocation bug (forgot to kmalloc!).
+ * Add checks for extension lengths.
+ * Add checks for extension reserved illegal values.
+ * Add check for spirange legal values.
+ * Add an extension type for parsing a second satype, SA and
+ * DST_ADDRESS.
+ * Make changes to tdb_init() template to get pfkey_tdb_init(),
+ * eliminating any mention of xformsw.
+ * Implement getspi, update and grpsa (not tested).
+ * Add stubs for as yet unimplemented message types.
+ * Add table of message parsers to substitute for msg_parse switch.
+ *
+ * Revision 1.3  1999/04/15 17:58:07  rgb
+ * Add RCSID labels.
+ *
+ * Revision 1.2  1999/04/15 15:37:26  rgb
+ * Forward check changes from POST1_00 branch.
+ *
+ * Revision 1.1.2.1  1999/03/26 20:58:56  rgb
+ * Add pfkeyv2 support to KLIPS.
+ *
+ * Local variables:
+ * c-file-style: "linux"
+ * End:
+ *
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/prng.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,201 @@
+/*
+ * crypto-class pseudorandom number generator
+ * currently uses same algorithm as RC4(TM), from Schneier 2nd ed p397
+ * Copyright (C) 2002  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id: prng.c,v 1.7 2004-07-10 07:48:36 mcr Exp $
+ */
+#include "openswan.h"
+
+/*
+ - prng_init - initialize PRNG from a key
+ */
+void
+prng_init(prng, key, keylen)
+struct prng *prng;
+const unsigned char *key;
+size_t keylen;
+{
+       unsigned char k[256];
+       int i, j;
+       unsigned const char *p;
+       unsigned const char *keyend = key + keylen;
+       unsigned char t;
+
+       for (i = 0; i <= 255; i++)
+               prng->sbox[i] = i;
+       p = key;
+       for (i = 0; i <= 255; i++) {
+               k[i] = *p++;
+               if (p >= keyend)
+                       p = key;
+       }
+       j = 0;
+       for (i = 0; i <= 255; i++) {
+               j = (j + prng->sbox[i] + k[i]) & 0xff;
+               t = prng->sbox[i];
+               prng->sbox[i] = prng->sbox[j];
+               prng->sbox[j] = t;
+               k[i] = 0;       /* clear out key memory */
+       }
+       prng->i = 0;
+       prng->j = 0;
+       prng->count = 0;
+}
+
+/*
+ - prng_bytes - get some pseudorandom bytes from PRNG
+ */
+void
+prng_bytes(prng, dst, dstlen)
+struct prng *prng;
+unsigned char *dst;
+size_t dstlen;
+{
+       int i, j, t;
+       unsigned char *p = dst;
+       size_t remain = dstlen;
+#      define  MAX     4000000000ul
+
+       while (remain > 0) {
+               i = (prng->i + 1) & 0xff;
+               prng->i = i;
+               j = (prng->j + prng->sbox[i]) & 0xff;
+               prng->j = j;
+               t = prng->sbox[i];
+               prng->sbox[i] = prng->sbox[j];
+               prng->sbox[j] = t;
+               t = (t + prng->sbox[i]) & 0xff;
+               *p++ = prng->sbox[t];
+               remain--;
+       }
+       if (prng->count < MAX - dstlen)
+               prng->count += dstlen;
+       else
+               prng->count = MAX;
+}
+
+/*
+ - prnt_count - how many bytes have been extracted from PRNG so far?
+ */
+unsigned long
+prng_count(prng)
+struct prng *prng;
+{
+       return prng->count;
+}
+
+/*
+ - prng_final - clear out PRNG to ensure nothing left in memory
+ */
+void
+prng_final(prng)
+struct prng *prng;
+{
+       int i;
+
+       for (i = 0; i <= 255; i++)
+               prng->sbox[i] = 0;
+       prng->i = 0;
+       prng->j = 0;
+       prng->count = 0;        /* just for good measure */
+}
+
+
+
+#ifdef PRNG_MAIN
+
+#include <stdio.h>
+
+void regress();
+
+int
+main(argc, argv)
+int argc;
+char *argv[];
+{
+       struct prng pr;
+       unsigned char buf[100];
+       unsigned char *p;
+       size_t n;
+
+       if (argc < 2) {
+               fprintf(stderr, "Usage: %s {key|-r}\n", argv[0]);
+               exit(2);
+       }
+
+       if (strcmp(argv[1], "-r") == 0) {
+               regress();
+               fprintf(stderr, "regress() returned?!?\n");
+               exit(1);
+       }
+
+       prng_init(&pr, argv[1], strlen(argv[1]));
+       prng_bytes(&pr, buf, 32);
+       printf("0x");
+       for (p = buf, n = 32; n > 0; p++, n--)
+               printf("%02x", *p);
+       printf("\n%lu bytes\n", prng_count(&pr));
+       prng_final(&pr);
+       exit(0);
+}
+
+void
+regress()
+{
+       struct prng pr;
+       unsigned char buf[100];
+       unsigned char *p;
+       size_t n;
+       /* somewhat non-random sample key */
+       unsigned char key[] = "here we go gathering nuts in May";
+       /* first thirty bytes of output from that key */
+       unsigned char good[] = "\x3f\x02\x8e\x4a\x2a\xea\x23\x18\x92\x7c"
+                               "\x09\x52\x83\x61\xaa\x26\xce\xbb\x9d\x71"
+                               "\x71\xe5\x10\x22\xaf\x60\x54\x8d\x5b\x28";
+       int nzero, none;
+       int show = 0;
+
+       prng_init(&pr, key, strlen(key));
+       prng_bytes(&pr, buf, sizeof(buf));
+       for (p = buf, n = sizeof(buf); n > 0; p++, n--) {
+               if (*p == 0)
+                       nzero++;
+               if (*p == 255)
+                       none++;
+       }
+       if (nzero > 3 || none > 3) {
+               fprintf(stderr, "suspiciously non-random output!\n");
+               show = 1;
+       }
+       if (memcmp(buf, good, strlen(good)) != 0) {
+               fprintf(stderr, "incorrect output!\n");
+               show = 1;
+       }
+       if (show) {
+               fprintf(stderr, "0x");
+               for (p = buf, n = sizeof(buf); n > 0; p++, n--)
+                       fprintf(stderr, "%02x", *p);
+               fprintf(stderr, "\n");
+               exit(1);
+       }
+       if (prng_count(&pr) != sizeof(buf)) {
+               fprintf(stderr, "got %u bytes, but count is %lu\n",
+                                       sizeof(buf), prng_count(&pr));
+               exit(1);
+       }
+       prng_final(&pr);
+       exit(0);
+}
+
+#endif /* PRNG_MAIN */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/radij.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,1237 @@
+char radij_c_version[] = "RCSID $Id: radij.c,v 1.48.2.1 2006-10-06 21:39:27 paul Exp $";
+
+/*
+ * This file is defived from ${SRC}/sys/net/radix.c of BSD 4.4lite
+ *
+ * Variable and procedure names have been modified so that they don't
+ * conflict with the original BSD code, as a small number of modifications
+ * have been introduced and we may want to reuse this code in BSD.
+ * 
+ * The `j' in `radij' is pronounced as a voiceless guttural (like a Greek
+ * chi or a German ch sound (as `doch', not as in `milch'), or even a 
+ * spanish j as in Juan.  It is not as far back in the throat like
+ * the corresponding Hebrew sound, nor is it a soft breath like the English h.
+ * It has nothing to do with the Dutch ij sound.
+ * 
+ * Here is the appropriate copyright notice:
+ */
+
+/*
+ * Copyright (c) 1988, 1989, 1993
+ *     The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *     This product includes software developed by the University of
+ *     California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ *     @(#)radix.c     8.2 (Berkeley) 1/4/94
+ */
+
+/*
+ * Routines to build and maintain radix trees for routing lookups.
+ */
+
+#ifndef AUTOCONF_INCLUDED
+#include <linux/config.h>
+#endif
+#include <linux/version.h>
+#include <linux/kernel.h> /* printk() */
+
+#include "openswan/ipsec_param.h"
+
+#ifdef MALLOC_SLAB
+# include <linux/slab.h> /* kmalloc() */
+#else /* MALLOC_SLAB */
+# include <linux/malloc.h> /* kmalloc() */
+#endif /* MALLOC_SLAB */
+#include <linux/errno.h>  /* error codes */
+#include <linux/types.h>  /* size_t */
+#include <linux/interrupt.h> /* mark_bh */
+
+#include <linux/netdevice.h>   /* struct device, and other headers */
+#include <linux/etherdevice.h> /* eth_type_trans */
+#include <linux/ip.h>          /* struct iphdr */
+#include <linux/skbuff.h>
+#ifdef NET_21
+# include <linux/in6.h>
+#endif /* NET_21 */
+
+#include <net/ip.h>
+
+#include <openswan.h>
+
+#include "openswan/radij.h"
+#include "openswan/ipsec_encap.h"
+#include "openswan/ipsec_radij.h"
+
+int    maj_keylen;
+struct radij_mask *rj_mkfreelist;
+struct radij_node_head *mask_rjhead;
+static int gotOddMasks;
+static char *maskedKey;
+static char *rj_zeroes, *rj_ones;
+
+#define rj_masktop (mask_rjhead->rnh_treetop)
+#ifdef Bcmp
+# undef Bcmp
+#endif /* Bcmp */
+#define Bcmp(a, b, l) (l == 0 ? 0 : memcmp((caddr_t)(b), (caddr_t)(a), (size_t)l))
+/*
+ * The data structure for the keys is a radix tree with one way
+ * branching removed.  The index rj_b at an internal node n represents a bit
+ * position to be tested.  The tree is arranged so that all descendants
+ * of a node n have keys whose bits all agree up to position rj_b - 1.
+ * (We say the index of n is rj_b.)
+ *
+ * There is at least one descendant which has a one bit at position rj_b,
+ * and at least one with a zero there.
+ *
+ * A route is determined by a pair of key and mask.  We require that the
+ * bit-wise logical and of the key and mask to be the key.
+ * We define the index of a route to associated with the mask to be
+ * the first bit number in the mask where 0 occurs (with bit number 0
+ * representing the highest order bit).
+ * 
+ * We say a mask is normal if every bit is 0, past the index of the mask.
+ * If a node n has a descendant (k, m) with index(m) == index(n) == rj_b,
+ * and m is a normal mask, then the route applies to every descendant of n.
+ * If the index(m) < rj_b, this implies the trailing last few bits of k
+ * before bit b are all 0, (and hence consequently true of every descendant
+ * of n), so the route applies to all descendants of the node as well.
+ *
+ * The present version of the code makes no use of normal routes,
+ * but similar logic shows that a non-normal mask m such that
+ * index(m) <= index(n) could potentially apply to many children of n.
+ * Thus, for each non-host route, we attach its mask to a list at an internal
+ * node as high in the tree as we can go. 
+ */
+
+struct radij_node *
+rj_search(v_arg, head)
+       void *v_arg;
+       struct radij_node *head;
+{
+       register struct radij_node *x;
+       register caddr_t v;
+
+       for (x = head, v = v_arg; x->rj_b >= 0;) {
+               if (x->rj_bmask & v[x->rj_off])
+                       x = x->rj_r;
+               else
+                       x = x->rj_l;
+       }
+       return (x);
+};
+
+struct radij_node *
+rj_search_m(v_arg, head, m_arg)
+       struct radij_node *head;
+       void *v_arg, *m_arg;
+{
+       register struct radij_node *x;
+       register caddr_t v = v_arg, m = m_arg;
+
+       for (x = head; x->rj_b >= 0;) {
+               if ((x->rj_bmask & m[x->rj_off]) &&
+                   (x->rj_bmask & v[x->rj_off]))
+                       x = x->rj_r;
+               else
+                       x = x->rj_l;
+       }
+       return x;
+};
+
+int
+rj_refines(m_arg, n_arg)
+       void *m_arg, *n_arg;
+{
+       register caddr_t m = m_arg, n = n_arg;
+       register caddr_t lim, lim2 = lim = n + *(u_char *)n;
+       int longer = (*(u_char *)n++) - (int)(*(u_char *)m++);
+       int masks_are_equal = 1;
+
+       if (longer > 0)
+               lim -= longer;
+       while (n < lim) {
+               if (*n & ~(*m))
+                       return 0;
+               if (*n++ != *m++)
+                       masks_are_equal = 0;
+                       
+       }
+       while (n < lim2)
+               if (*n++)
+                       return 0;
+       if (masks_are_equal && (longer < 0))
+               for (lim2 = m - longer; m < lim2; )
+                       if (*m++)
+                               return 1;
+       return (!masks_are_equal);
+}
+
+
+struct radij_node *
+rj_match(v_arg, head)
+       void *v_arg;
+       struct radij_node_head *head;
+{
+       caddr_t v = v_arg;
+       register struct radij_node *t = head->rnh_treetop, *x;
+       register caddr_t cp = v, cp2, cp3;
+       caddr_t cplim, mstart;
+       struct radij_node *saved_t, *top = t;
+       int off = t->rj_off, vlen = *(u_char *)cp, matched_off;
+
+       /*
+        * Open code rj_search(v, top) to avoid overhead of extra
+        * subroutine call.
+        */
+       for (; t->rj_b >= 0; ) {
+               if (t->rj_bmask & cp[t->rj_off])
+                       t = t->rj_r;
+               else
+                       t = t->rj_l;
+       }
+       /*
+        * See if we match exactly as a host destination
+        */
+       KLIPS_PRINT(debug_radij,
+                   "klips_debug:rj_match: "
+                   "* See if we match exactly as a host destination\n");
+       
+       cp += off; cp2 = t->rj_key + off; cplim = v + vlen;
+       for (; cp < cplim; cp++, cp2++)
+               if (*cp != *cp2)
+                       goto on1;
+       /*
+        * This extra grot is in case we are explicitly asked
+        * to look up the default.  Ugh!
+        */
+       if ((t->rj_flags & RJF_ROOT) && t->rj_dupedkey)
+               t = t->rj_dupedkey;
+       return t;
+on1:
+       matched_off = cp - v;
+       saved_t = t;
+       KLIPS_PRINT(debug_radij,
+                   "klips_debug:rj_match: "
+                   "** try to match a leaf, t=0p%p\n", t);
+       do {
+           if (t->rj_mask) {
+               /*
+                * Even if we don't match exactly as a hosts;
+                * we may match if the leaf we wound up at is
+                * a route to a net.
+                */
+               cp3 = matched_off + t->rj_mask;
+               cp2 = matched_off + t->rj_key;
+               for (; cp < cplim; cp++)
+                       if ((*cp2++ ^ *cp) & *cp3++)
+                               break;
+               if (cp == cplim)
+                       return t;
+               cp = matched_off + v;
+           }
+       } while ((t = t->rj_dupedkey));
+       t = saved_t;
+       /* start searching up the tree */
+       KLIPS_PRINT(debug_radij,
+                   "klips_debug:rj_match: "
+                   "*** start searching up the tree, t=0p%p\n",
+                   t);
+       do {
+               register struct radij_mask *m;
+               
+               t = t->rj_p;
+               KLIPS_PRINT(debug_radij,
+                           "klips_debug:rj_match: "
+                           "**** t=0p%p\n",
+                           t);
+               if ((m = t->rj_mklist)) {
+                       /*
+                        * After doing measurements here, it may
+                        * turn out to be faster to open code
+                        * rj_search_m here instead of always
+                        * copying and masking.
+                        */
+                       /* off = min(t->rj_off, matched_off); */
+                       off = t->rj_off;
+                       if (matched_off < off)
+                               off = matched_off;
+                       mstart = maskedKey + off;
+                       do {
+                               cp2 = mstart;
+                               cp3 = m->rm_mask + off;
+                               KLIPS_PRINT(debug_radij,
+                                           "klips_debug:rj_match: "
+                                           "***** cp2=0p%p cp3=0p%p\n",
+                                           cp2, cp3);
+                               for (cp = v + off; cp < cplim;)
+                                       *cp2++ =  *cp++ & *cp3++;
+                               x = rj_search(maskedKey, t);
+                               while (x && x->rj_mask != m->rm_mask)
+                                       x = x->rj_dupedkey;
+                               if (x &&
+                                   (Bcmp(mstart, x->rj_key + off,
+                                       vlen - off) == 0))
+                                           return x;
+                       } while ((m = m->rm_mklist));
+               }
+       } while (t != top);
+       KLIPS_PRINT(debug_radij,
+                   "klips_debug:rj_match: "
+                   "***** not found.\n");
+       return 0;
+};
+               
+#ifdef RJ_DEBUG
+int    rj_nodenum;
+struct radij_node *rj_clist;
+int    rj_saveinfo;
+DEBUG_NO_STATIC void traverse(struct radij_node *);
+#ifdef RJ_DEBUG2
+int    rj_debug =  1;
+#else
+int    rj_debug =  0;
+#endif /* RJ_DEBUG2 */
+#endif /* RJ_DEBUG */
+
+struct radij_node *
+rj_newpair(v, b, nodes)
+       void *v;
+       int b;
+       struct radij_node nodes[2];
+{
+       register struct radij_node *tt = nodes, *t = tt + 1;
+       t->rj_b = b; t->rj_bmask = 0x80 >> (b & 7);
+       t->rj_l = tt; t->rj_off = b >> 3;
+       tt->rj_b = -1; tt->rj_key = (caddr_t)v; tt->rj_p = t;
+       tt->rj_flags = t->rj_flags = RJF_ACTIVE;
+#ifdef RJ_DEBUG
+       tt->rj_info = rj_nodenum++; t->rj_info = rj_nodenum++;
+       tt->rj_twin = t; tt->rj_ybro = rj_clist; rj_clist = tt;
+#endif /* RJ_DEBUG */
+       return t;
+}
+
+struct radij_node *
+rj_insert(v_arg, head, dupentry, nodes)
+       void *v_arg;
+       struct radij_node_head *head;
+       int *dupentry;
+       struct radij_node nodes[2];
+{
+       caddr_t v = v_arg;
+       struct radij_node *top = head->rnh_treetop;
+       int head_off = top->rj_off, vlen = (int)*((u_char *)v);
+       register struct radij_node *t = rj_search(v_arg, top);
+       register caddr_t cp = v + head_off;
+       register int b;
+       struct radij_node *tt;
+       /*
+        *find first bit at which v and t->rj_key differ
+        */
+    {
+       register caddr_t cp2 = t->rj_key + head_off;
+       register int cmp_res;
+       caddr_t cplim = v + vlen;
+
+       while (cp < cplim)
+               if (*cp2++ != *cp++)
+                       goto on1;
+       *dupentry = 1;
+       return t;
+on1:
+       *dupentry = 0;
+       cmp_res = (cp[-1] ^ cp2[-1]) & 0xff;
+       for (b = (cp - v) << 3; cmp_res; b--)
+               cmp_res >>= 1;
+    }
+    {
+       register struct radij_node *p, *x = top;
+       cp = v;
+       do {
+               p = x;
+               if (cp[x->rj_off] & x->rj_bmask) 
+                       x = x->rj_r;
+               else x = x->rj_l;
+       } while (b > (unsigned) x->rj_b); /* x->rj_b < b && x->rj_b >= 0 */
+#ifdef RJ_DEBUG
+       if (rj_debug)
+               printk("klips_debug:rj_insert: Going In:\n"), traverse(p);
+#endif /* RJ_DEBUG */
+       t = rj_newpair(v_arg, b, nodes); tt = t->rj_l;
+       if ((cp[p->rj_off] & p->rj_bmask) == 0)
+               p->rj_l = t;
+       else
+               p->rj_r = t;
+       x->rj_p = t; t->rj_p = p; /* frees x, p as temp vars below */
+       if ((cp[t->rj_off] & t->rj_bmask) == 0) {
+               t->rj_r = x;
+       } else {
+               t->rj_r = tt; t->rj_l = x;
+       }
+#ifdef RJ_DEBUG
+       if (rj_debug)
+               printk("klips_debug:rj_insert: Coming out:\n"), traverse(p);
+#endif /* RJ_DEBUG */
+    }
+       return (tt);
+}
+
+struct radij_node *
+rj_addmask(n_arg, search, skip)
+       int search, skip;
+       void *n_arg;
+{
+       caddr_t netmask = (caddr_t)n_arg;
+       register struct radij_node *x;
+       register caddr_t cp, cplim;
+       register int b, mlen, j;
+       int maskduplicated;
+
+       mlen = *(u_char *)netmask;
+       if (search) {
+               x = rj_search(netmask, rj_masktop);
+               mlen = *(u_char *)netmask;
+               if (Bcmp(netmask, x->rj_key, mlen) == 0)
+                       return (x);
+       }
+       R_Malloc(x, struct radij_node *, maj_keylen + 2 * sizeof (*x));
+       if (x == 0)
+               return (0);
+       Bzero(x, maj_keylen + 2 * sizeof (*x));
+       cp = (caddr_t)(x + 2);
+       Bcopy(netmask, cp, mlen);
+       netmask = cp;
+       x = rj_insert(netmask, mask_rjhead, &maskduplicated, x);
+       /*
+        * Calculate index of mask.
+        */
+       cplim = netmask + mlen;
+       for (cp = netmask + skip; cp < cplim; cp++)
+               if (*(u_char *)cp != 0xff)
+                       break;
+       b = (cp - netmask) << 3;
+       if (cp != cplim) {
+               if (*cp != 0) {
+                       gotOddMasks = 1;
+                       for (j = 0x80; j; b++, j >>= 1)  
+                               if ((j & *cp) == 0)
+                                       break;
+               }
+       }
+       x->rj_b = -1 - b;
+       return (x);
+}
+
+#if 0
+struct radij_node *
+#endif
+int
+rj_addroute(v_arg, n_arg, head, treenodes)
+       void *v_arg, *n_arg;
+       struct radij_node_head *head;
+       struct radij_node treenodes[2];
+{
+       caddr_t v = (caddr_t)v_arg, netmask = (caddr_t)n_arg;
+       register struct radij_node *t, *x=NULL, *tt;
+       struct radij_node *saved_tt, *top = head->rnh_treetop;
+       short b = 0, b_leaf;
+       int mlen, keyduplicated;
+       caddr_t cplim;
+       struct radij_mask *m, **mp;
+
+       /*
+        * In dealing with non-contiguous masks, there may be
+        * many different routes which have the same mask.
+        * We will find it useful to have a unique pointer to
+        * the mask to speed avoiding duplicate references at
+        * nodes and possibly save time in calculating indices.
+        */
+       if (netmask)  {
+               x = rj_search(netmask, rj_masktop);
+               mlen = *(u_char *)netmask;
+               if (Bcmp(netmask, x->rj_key, mlen) != 0) {
+                       x = rj_addmask(netmask, 0, top->rj_off);
+                       if (x == 0)
+                               return -ENOMEM; /* (0) rgb */
+               }
+               netmask = x->rj_key;
+               b = -1 - x->rj_b;
+       }
+       /*
+        * Deal with duplicated keys: attach node to previous instance
+        */
+       saved_tt = tt = rj_insert(v, head, &keyduplicated, treenodes);
+#ifdef RJ_DEBUG
+       printk("addkey: duplicated: %d\n", keyduplicated);
+#endif
+       if (keyduplicated) {
+               do {
+                       if (tt->rj_mask == netmask)
+                               return -EEXIST; /* -ENXIO; (0) rgb */
+                       t = tt;
+                       if (netmask == 0 ||
+                           (tt->rj_mask && rj_refines(netmask, tt->rj_mask)))
+                               break;
+               } while ((tt = tt->rj_dupedkey));
+               /*
+                * If the mask is not duplicated, we wouldn't
+                * find it among possible duplicate key entries
+                * anyway, so the above test doesn't hurt.
+                *
+                * We sort the masks for a duplicated key the same way as
+                * in a masklist -- most specific to least specific.
+                * This may require the unfortunate nuisance of relocating
+                * the head of the list.
+                */
+               if (tt && t == saved_tt) {
+                       struct  radij_node *xx = x;
+                       /* link in at head of list */
+                       (tt = treenodes)->rj_dupedkey = t;
+                       tt->rj_flags = t->rj_flags;
+                       tt->rj_p = x = t->rj_p;
+                       if (x->rj_l == t) x->rj_l = tt; else x->rj_r = tt;
+                       saved_tt = tt; x = xx;
+               } else {
+                       (tt = treenodes)->rj_dupedkey = t->rj_dupedkey;
+                       t->rj_dupedkey = tt;
+               }
+#ifdef RJ_DEBUG
+               t=tt+1; tt->rj_info = rj_nodenum++; t->rj_info = rj_nodenum++;
+               tt->rj_twin = t; tt->rj_ybro = rj_clist; rj_clist = tt;
+#endif /* RJ_DEBUG */
+               t = saved_tt;
+               tt->rj_key = (caddr_t) v;
+               tt->rj_b = -1;
+               tt->rj_flags = t->rj_flags & ~RJF_ROOT;
+       }
+       /*
+        * Put mask in tree.
+        */
+       if (netmask) {
+               tt->rj_mask = netmask;
+               tt->rj_b = x->rj_b;
+       }
+       t = saved_tt->rj_p;
+       b_leaf = -1 - t->rj_b;
+       if (t->rj_r == saved_tt) x = t->rj_l; else x = t->rj_r;
+       /* Promote general routes from below */
+       if (x->rj_b < 0) { 
+               if (x->rj_mask && (x->rj_b >= b_leaf) && x->rj_mklist == 0) {
+                       MKGet(m);
+                       if (m) {
+                               Bzero(m, sizeof *m);
+                               m->rm_b = x->rj_b;
+                               m->rm_mask = x->rj_mask;
+                               x->rj_mklist = t->rj_mklist = m;
+                       }
+               }
+       } else if (x->rj_mklist) {
+               /*
+                * Skip over masks whose index is > that of new node
+                */
+               for (mp = &x->rj_mklist; (m = *mp); mp = &m->rm_mklist)
+                       if (m->rm_b >= b_leaf)
+                               break;
+               t->rj_mklist = m; *mp = 0;
+       }
+       /* Add new route to highest possible ancestor's list */
+       if ((netmask == 0) || (b > t->rj_b )) {
+#ifdef RJ_DEBUG
+               printk("klips:radij.c: netmask = %p or b(%d)>t->rjb(%d)\n", netmask, b, t->rj_b);
+#endif
+               return 0; /* tt rgb */ /* can't lift at all */
+       }
+       b_leaf = tt->rj_b;
+       do {
+               x = t;
+               t = t->rj_p;
+       } while (b <= t->rj_b && x != top);
+       /*
+        * Search through routes associated with node to
+        * insert new route according to index.
+        * For nodes of equal index, place more specific
+        * masks first.
+        */
+       cplim = netmask + mlen;
+       for (mp = &x->rj_mklist; (m = *mp); mp = &m->rm_mklist) {
+               if (m->rm_b < b_leaf)
+                       continue;
+               if (m->rm_b > b_leaf)
+                       break;
+               if (m->rm_mask == netmask) {
+                       m->rm_refs++;
+                       tt->rj_mklist = m;
+#ifdef RJ_DEBUG
+                       printk("klips:radij.c: m->rm_mask %p == netmask\n", netmask);
+#endif
+                       return 0; /* tt rgb */
+               }
+               if (rj_refines(netmask, m->rm_mask))
+                       break;
+       }
+       MKGet(m);
+       if (m == 0) {
+               printk("klips_debug:rj_addroute: "
+                      "Mask for route not entered\n");
+               return 0; /* (tt) rgb */
+       }
+       Bzero(m, sizeof *m);
+       m->rm_b = b_leaf;
+       m->rm_mask = netmask;
+       m->rm_mklist = *mp;
+       *mp = m;
+       tt->rj_mklist = m;
+#ifdef RJ_DEBUG
+       printk("klips:radij.c: addroute done\n");
+#endif
+       return 0; /* tt rgb */
+}
+
+int
+rj_delete(v_arg, netmask_arg, head, node)
+       void *v_arg, *netmask_arg;
+       struct radij_node_head *head;
+       struct radij_node **node;
+{
+       register struct radij_node *t, *p, *x, *tt;
+       struct radij_mask *m, *saved_m, **mp;
+       struct radij_node *dupedkey, *saved_tt, *top;
+       caddr_t v, netmask;
+       int b, head_off, vlen;
+
+       v = v_arg;
+       netmask = netmask_arg;
+       x = head->rnh_treetop;
+       tt = rj_search(v, x);
+       head_off = x->rj_off;
+       vlen =  *(u_char *)v;
+       saved_tt = tt;
+       top = x;
+       if (tt == 0 ||
+           Bcmp(v + head_off, tt->rj_key + head_off, vlen - head_off))
+               return -EFAULT; /* (0) rgb */
+       /*
+        * Delete our route from mask lists.
+        */
+       if ((dupedkey = tt->rj_dupedkey)) {
+               if (netmask) 
+                       netmask = rj_search(netmask, rj_masktop)->rj_key;
+               while (tt->rj_mask != netmask)
+                       if ((tt = tt->rj_dupedkey) == 0)
+                               return -ENOENT; /* -ENXIO; (0) rgb */
+       }
+       if (tt->rj_mask == 0 || (saved_m = m = tt->rj_mklist) == 0)
+               goto on1;
+       if (m->rm_mask != tt->rj_mask) {
+               printk("klips_debug:rj_delete: "
+                      "inconsistent annotation\n");
+               goto on1;
+       }
+       if (--m->rm_refs >= 0)
+               goto on1;
+       b = -1 - tt->rj_b;
+       t = saved_tt->rj_p;
+       if (b > t->rj_b)
+               goto on1; /* Wasn't lifted at all */
+       do {
+               x = t;
+               t = t->rj_p;
+       } while (b <= t->rj_b && x != top);
+       for (mp = &x->rj_mklist; (m = *mp); mp = &m->rm_mklist)
+               if (m == saved_m) {
+                       *mp = m->rm_mklist;
+                       MKFree(m);
+                       break;
+               }
+       if (m == 0)
+               printk("klips_debug:rj_delete: "
+                      "couldn't find our annotation\n");
+on1:
+       /*
+        * Eliminate us from tree
+        */
+       if (tt->rj_flags & RJF_ROOT)
+               return -EFAULT; /* (0) rgb */
+#ifdef RJ_DEBUG
+       /* Get us out of the creation list */
+       for (t = rj_clist; t && t->rj_ybro != tt; t = t->rj_ybro) {}
+       if (t) t->rj_ybro = tt->rj_ybro;
+#endif /* RJ_DEBUG */
+       t = tt->rj_p;
+       if (dupedkey) {
+               if (tt == saved_tt) {
+                       x = dupedkey; x->rj_p = t;
+                       if (t->rj_l == tt) t->rj_l = x; else t->rj_r = x;
+               } else {
+                       for (x = p = saved_tt; p && p->rj_dupedkey != tt;)
+                               p = p->rj_dupedkey;
+                       if (p) p->rj_dupedkey = tt->rj_dupedkey;
+                       else printk("klips_debug:rj_delete: "
+                                      "couldn't find node that we started with\n");
+               }
+               t = tt + 1;
+               if  (t->rj_flags & RJF_ACTIVE) {
+#ifndef RJ_DEBUG
+                       *++x = *t; p = t->rj_p;
+#else
+                       b = t->rj_info; *++x = *t; t->rj_info = b; p = t->rj_p;
+#endif /* RJ_DEBUG */
+                       if (p->rj_l == t) p->rj_l = x; else p->rj_r = x;
+                       x->rj_l->rj_p = x; x->rj_r->rj_p = x;
+               }
+               goto out;
+       }
+       if (t->rj_l == tt) x = t->rj_r; else x = t->rj_l;
+       p = t->rj_p;
+       if (p->rj_r == t) p->rj_r = x; else p->rj_l = x;
+       x->rj_p = p;
+       /*
+        * Demote routes attached to us.
+        */
+       if (t->rj_mklist) {
+               if (x->rj_b >= 0) {
+                       for (mp = &x->rj_mklist; (m = *mp);)
+                               mp = &m->rm_mklist;
+                       *mp = t->rj_mklist;
+               } else {
+                       for (m = t->rj_mklist; m;) {
+                               struct radij_mask *mm = m->rm_mklist;
+                               if (m == x->rj_mklist && (--(m->rm_refs) < 0)) {
+                                       x->rj_mklist = 0;
+                                       MKFree(m);
+                               } else 
+                                       printk("klips_debug:rj_delete: "
+                                           "Orphaned Mask 0p%p at 0p%p\n", m, x);
+                               m = mm;
+                       }
+               }
+       }
+       /*
+        * We may be holding an active internal node in the tree.
+        */
+       x = tt + 1;
+       if (t != x) {
+#ifndef RJ_DEBUG
+               *t = *x;
+#else
+               b = t->rj_info; *t = *x; t->rj_info = b;
+#endif /* RJ_DEBUG */
+               t->rj_l->rj_p = t; t->rj_r->rj_p = t;
+               p = x->rj_p;
+               if (p->rj_l == x) p->rj_l = t; else p->rj_r = t;
+       }
+out:
+       tt->rj_flags &= ~RJF_ACTIVE;
+       tt[1].rj_flags &= ~RJF_ACTIVE;
+       *node = tt;
+       return 0; /* (tt) rgb */
+}
+
+int
+rj_walktree(h, f, w)
+       struct radij_node_head *h;
+       register int (*f)(struct radij_node *,void *);
+       void *w;
+{
+       int error;
+       struct radij_node *base, *next;
+       register struct radij_node *rn;
+
+       if(!h || !f /* || !w */) {
+               return -ENODATA;
+       }
+
+       rn = h->rnh_treetop;
+       /*
+        * This gets complicated because we may delete the node
+        * while applying the function f to it, so we need to calculate
+        * the successor node in advance.
+        */
+       /* First time through node, go left */
+       while (rn->rj_b >= 0)
+               rn = rn->rj_l;
+       for (;;) {
+#ifdef CONFIG_KLIPS_DEBUG
+               if(debug_radij) {
+                       printk("klips_debug:rj_walktree: "
+                              "for: rn=0p%p rj_b=%d rj_flags=%x",
+                              rn,
+                              rn->rj_b,
+                              rn->rj_flags);
+                       rn->rj_b >= 0 ?
+                               printk(" node off=%x\n",
+                                      rn->rj_off) :
+                               printk(" leaf key = %08x->%08x\n",
+                                      (u_int)ntohl(((struct sockaddr_encap *)rn->rj_key)->sen_ip_src.s_addr),
+                                      (u_int)ntohl(((struct sockaddr_encap *)rn->rj_key)->sen_ip_dst.s_addr))
+                               ;
+               }
+#endif /* CONFIG_KLIPS_DEBUG */
+               base = rn;
+               /* If at right child go back up, otherwise, go right */
+               while (rn->rj_p->rj_r == rn && (rn->rj_flags & RJF_ROOT) == 0)
+                       rn = rn->rj_p;
+               /* Find the next *leaf* since next node might vanish, too */
+               for (rn = rn->rj_p->rj_r; rn->rj_b >= 0;)
+                       rn = rn->rj_l;
+               next = rn;
+#ifdef CONFIG_KLIPS_DEBUG
+               if(debug_radij) {
+                       printk("klips_debug:rj_walktree: "
+                              "processing leaves, rn=0p%p rj_b=%d rj_flags=%x",
+                              rn,
+                              rn->rj_b,
+                              rn->rj_flags);
+                       rn->rj_b >= 0 ?
+                               printk(" node off=%x\n",
+                                      rn->rj_off) :
+                               printk(" leaf key = %08x->%08x\n",
+                                      (u_int)ntohl(((struct sockaddr_encap *)rn->rj_key)->sen_ip_src.s_addr),
+                                      (u_int)ntohl(((struct sockaddr_encap *)rn->rj_key)->sen_ip_dst.s_addr))
+                               ;
+               }
+#endif /* CONFIG_KLIPS_DEBUG */
+               /* Process leaves */
+               while ((rn = base)) {
+                       base = rn->rj_dupedkey;
+#ifdef CONFIG_KLIPS_DEBUG
+                       if(debug_radij) {
+                               printk("klips_debug:rj_walktree: "
+                                      "while: base=0p%p rn=0p%p rj_b=%d rj_flags=%x",
+                                      base,
+                                      rn,
+                                      rn->rj_b,
+                                      rn->rj_flags);
+                               rn->rj_b >= 0 ?
+                                       printk(" node off=%x\n",
+                                              rn->rj_off) :
+                                       printk(" leaf key = %08x->%08x\n",
+                                              (u_int)ntohl(((struct sockaddr_encap *)rn->rj_key)->sen_ip_src.s_addr),
+                                              (u_int)ntohl(((struct sockaddr_encap *)rn->rj_key)->sen_ip_dst.s_addr))
+                                       ;
+                       }
+#endif /* CONFIG_KLIPS_DEBUG */
+                       if (!(rn->rj_flags & RJF_ROOT) && (error = (*f)(rn, w)))
+                               return (-error);
+               }
+               rn = next;
+               if (rn->rj_flags & RJF_ROOT)
+                       return (0);
+       }
+       /* NOTREACHED */
+}
+
+int
+rj_inithead(head, off)
+       void **head;
+       int off;
+{
+       register struct radij_node_head *rnh;
+       register struct radij_node *t, *tt, *ttt;
+       if (*head)
+               return (1);
+       R_Malloc(rnh, struct radij_node_head *, sizeof (*rnh));
+       if (rnh == NULL)
+               return (0);
+       Bzero(rnh, sizeof (*rnh));
+       *head = rnh;
+       t = rj_newpair(rj_zeroes, off, rnh->rnh_nodes);
+       ttt = rnh->rnh_nodes + 2;
+       t->rj_r = ttt;
+       t->rj_p = t;
+       tt = t->rj_l;
+       tt->rj_flags = t->rj_flags = RJF_ROOT | RJF_ACTIVE;
+       tt->rj_b = -1 - off;
+       *ttt = *tt;
+       ttt->rj_key = rj_ones;
+       rnh->rnh_addaddr = rj_addroute;
+       rnh->rnh_deladdr = rj_delete;
+       rnh->rnh_matchaddr = rj_match;
+       rnh->rnh_walktree = rj_walktree;
+       rnh->rnh_treetop = t;
+       return (1);
+}
+
+void
+rj_init()
+{
+       char *cp, *cplim;
+
+       if (maj_keylen == 0) {
+               printk("klips_debug:rj_init: "
+                      "radij functions require maj_keylen be set\n");
+               return;
+       }
+       R_Malloc(rj_zeroes, char *, 3 * maj_keylen);
+       if (rj_zeroes == NULL)
+               panic("rj_init");
+       Bzero(rj_zeroes, 3 * maj_keylen);
+       rj_ones = cp = rj_zeroes + maj_keylen;
+       maskedKey = cplim = rj_ones + maj_keylen;
+       while (cp < cplim)
+               *cp++ = -1;
+       if (rj_inithead((void **)&mask_rjhead, 0) == 0)
+               panic("rj_init 2");
+}
+
+void
+rj_preorder(struct radij_node *rn, int l)
+{
+       int i;
+       
+       if (rn == NULL){
+               printk("klips_debug:rj_preorder: "
+                      "NULL pointer\n");
+               return;
+       }
+       
+       if (rn->rj_b >= 0){
+               rj_preorder(rn->rj_l, l+1);
+               rj_preorder(rn->rj_r, l+1);
+               printk("klips_debug:");
+               for (i=0; i<l; i++)
+                       printk("*");
+               printk(" off = %d\n",
+                      rn->rj_off);
+       } else {
+               printk("klips_debug:");
+               for (i=0; i<l; i++)
+                       printk("@");
+               printk(" flags = %x",
+                      (u_int)rn->rj_flags);
+               if (rn->rj_flags & RJF_ACTIVE) {
+                       printk(" @key=0p%p",
+                              rn->rj_key);
+                       printk(" key = %08x->%08x",
+                              (u_int)ntohl(((struct sockaddr_encap *)rn->rj_key)->sen_ip_src.s_addr),
+                              (u_int)ntohl(((struct sockaddr_encap *)rn->rj_key)->sen_ip_dst.s_addr));
+                       printk(" @mask=0p%p",
+                              rn->rj_mask);
+                       if (rn->rj_mask)
+                               printk(" mask = %08x->%08x",
+                                      (u_int)ntohl(((struct sockaddr_encap *)rn->rj_mask)->sen_ip_src.s_addr),
+                                      (u_int)ntohl(((struct sockaddr_encap *)rn->rj_mask)->sen_ip_dst.s_addr));
+                       if (rn->rj_dupedkey)
+                               printk(" dupedkey = 0p%p",
+                                      rn->rj_dupedkey);
+               }
+               printk("\n");
+       }
+}
+
+#ifdef RJ_DEBUG
+DEBUG_NO_STATIC void traverse(struct radij_node *p)
+{
+  rj_preorder(p, 0);
+}
+#endif /* RJ_DEBUG */
+
+void
+rj_dumptrees(void)
+{
+       rj_preorder(rnh->rnh_treetop, 0);
+}
+
+void
+rj_free_mkfreelist(void)
+{
+       struct radij_mask *mknp, *mknp2;
+
+       mknp = rj_mkfreelist;
+       while(mknp)
+       {
+               mknp2 = mknp;
+               mknp = mknp->rm_mklist;
+               kfree(mknp2);
+       }
+}
+
+int
+radijcleartree(void)
+{
+       return rj_walktree(rnh, ipsec_rj_walker_delete, NULL);
+}
+
+int
+radijcleanup(void)
+{
+       int error = 0;
+
+       error = radijcleartree();
+
+       rj_free_mkfreelist();
+
+/*     rj_walktree(mask_rjhead, ipsec_rj_walker_delete, NULL); */
+       if(mask_rjhead) {
+               kfree(mask_rjhead);
+       }
+
+       if(rj_zeroes) {
+               kfree(rj_zeroes);
+       }
+
+       if(rnh) {
+               kfree(rnh);
+       }
+
+       return error;
+}
+
+/*
+ * $Log: radij.c,v $
+ * Revision 1.48.2.1  2006-10-06 21:39:27  paul
+ * Fix for 2.6.18+ only include linux/config.h if AUTOCONF_INCLUDED is not
+ * set. This is defined through autoconf.h which is included through the
+ * linux kernel build macros.
+ *
+ * Revision 1.48  2005/04/29 05:10:22  mcr
+ *     removed from extraenous includes to make unit testing easier.
+ *
+ * Revision 1.47  2004/07/10 19:11:18  mcr
+ *     CONFIG_IPSEC -> CONFIG_KLIPS.
+ *
+ * Revision 1.46  2004/04/06 02:49:26  mcr
+ *     pullup of algo code from alg-branch.
+ *
+ * Revision 1.45  2003/10/31 02:27:55  mcr
+ *     pulled up port-selector patches and sa_id elimination.
+ *
+ * Revision 1.44.30.1  2003/10/29 01:30:41  mcr
+ *     elimited "struct sa_id".
+ *
+ * Revision 1.44  2002/07/24 18:44:54  rgb
+ * Type fiddling to tame ia64 compiler.
+ *
+ * Revision 1.43  2002/05/23 07:14:11  rgb
+ * Cleaned up %p variants to 0p%p for test suite cleanup.
+ *
+ * Revision 1.42  2002/04/24 07:55:32  mcr
+ *     #include patches and Makefiles for post-reorg compilation.
+ *
+ * Revision 1.41  2002/04/24 07:36:35  mcr
+ * Moved from ./klips/net/ipsec/radij.c,v
+ *
+ * Revision 1.40  2002/01/29 17:17:58  mcr
+ *     moved include of ipsec_param.h to after include of linux/kernel.h
+ *     otherwise, it seems that some option that is set in ipsec_param.h
+ *     screws up something subtle in the include path to kernel.h, and
+ *     it complains on the snprintf() prototype.
+ *
+ * Revision 1.39  2002/01/29 04:00:55  mcr
+ *     more excise of kversions.h header.
+ *
+ * Revision 1.38  2002/01/29 02:13:19  mcr
+ *     introduction of ipsec_kversion.h means that include of
+ *     ipsec_param.h must preceed any decisions about what files to
+ *     include to deal with differences in kernel source.
+ *
+ * Revision 1.37  2001/10/18 04:45:23  rgb
+ * 2.4.9 kernel deprecates linux/malloc.h in favour of linux/slab.h,
+ * lib/freeswan.h version macros moved to lib/kversions.h.
+ * Other compiler directive cleanups.
+ *
+ * Revision 1.36  2001/08/22 13:43:51  henry
+ * eliminate the single use of min() to avoid problems with Linus changing it
+ *
+ * Revision 1.35  2001/06/15 04:57:29  rgb
+ * Clarified error return codes.
+ * Changed mask add already exists to EEXIST.
+ * Changed mask delete did not exist to ENOENT.
+ *
+ * Revision 1.34  2001/05/03 19:44:26  rgb
+ * Fix sign of error return codes for rj_addroute().
+ *
+ * Revision 1.33  2001/02/27 22:24:56  rgb
+ * Re-formatting debug output (line-splitting, joining, 1arg/line).
+ * Check for satoa() return codes.
+ *
+ * Revision 1.32  2001/02/27 06:23:15  rgb
+ * Debug line splitting.
+ *
+ * Revision 1.31  2000/11/06 04:35:21  rgb
+ * Clear table *before* releasing other items in radijcleanup.
+ *
+ * Revision 1.30  2000/09/20 04:07:40  rgb
+ * Changed static functions to DEBUG_NO_STATIC to reveal function names in
+ * oopsen.
+ *
+ * Revision 1.29  2000/09/12 03:25:02  rgb
+ * Moved radij_c_version printing to ipsec_version_get_info().
+ *
+ * Revision 1.28  2000/09/08 19:12:56  rgb
+ * Change references from DEBUG_IPSEC to CONFIG_IPSEC_DEBUG.
+ *
+ * Revision 1.27  2000/07/28 14:58:32  rgb
+ * Changed kfree_s to kfree, eliminating extra arg to fix 2.4.0-test5.
+ *
+ * Revision 1.26  2000/05/10 23:11:37  rgb
+ * Comment out most of the startup version information.
+ *
+ * Revision 1.25  2000/01/21 06:21:47  rgb
+ * Change return codes to negative on error.
+ *
+ * Revision 1.24  1999/11/18 04:09:20  rgb
+ * Replaced all kernel version macros to shorter, readable form.
+ *
+ * Revision 1.23  1999/11/17 15:53:41  rgb
+ * Changed all occurrences of #include "../../../lib/freeswan.h"
+ * to #include <freeswan.h> which works due to -Ilibfreeswan in the
+ * klips/net/ipsec/Makefile.
+ *
+ * Revision 1.22  1999/10/15 22:17:28  rgb
+ * Modify radijcleanup() to call radijcleartree().
+ *
+ * Revision 1.21  1999/10/08 18:37:34  rgb
+ * Fix end-of-line spacing to sate whining PHMs.
+ *
+ * Revision 1.20  1999/10/01 15:44:54  rgb
+ * Move spinlock header include to 2.1> scope.
+ *
+ * Revision 1.19  1999/10/01 08:35:52  rgb
+ * Add spinlock include to shut up compiler for 2.0.38.
+ *
+ * Revision 1.18  1999/09/23 18:02:52  rgb
+ * De-alarm the search failure message so it doesn't sound so grave.
+ *
+ * Revision 1.17  1999/05/25 21:26:01  rgb
+ * Fix rj_walktree() sanity checking bug.
+ *
+ * Revision 1.16  1999/05/09 03:25:38  rgb
+ * Fix bug introduced by 2.2 quick-and-dirty patch.
+ *
+ * Revision 1.15  1999/05/05 22:02:33  rgb
+ * Add a quick and dirty port to 2.2 kernels by Marc Boucher <marc@mbsi.ca>.
+ *
+ * Revision 1.14  1999/04/29 15:24:15  rgb
+ * Add sanity checking for null pointer arguments.
+ * Standardise an error return method.
+ *
+ * Revision 1.13  1999/04/11 00:29:02  henry
+ * GPL boilerplate
+ *
+ * Revision 1.12  1999/04/06 04:54:28  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ * Revision 1.11  1999/02/17 16:52:53  rgb
+ * Convert DEBUG_IPSEC to KLIPS_PRINT
+ * Clean out unused cruft.
+ *
+ * Revision 1.10  1999/01/22 06:30:05  rgb
+ * Cruft clean-out.
+ * 64-bit clean-up.
+ *
+ * Revision 1.9  1998/12/01 13:22:04  rgb
+ * Added support for debug printing of version info.
+ *
+ * Revision 1.8  1998/11/30 13:22:55  rgb
+ * Rationalised all the klips kernel file headers.  They are much shorter
+ * now and won't conflict under RH5.2.
+ *
+ * Revision 1.7  1998/10/25 02:43:26  rgb
+ * Change return type on rj_addroute and rj_delete and add and argument
+ * to the latter to be able to transmit more infomation about errors.
+ *
+ * Revision 1.6  1998/10/19 14:30:06  rgb
+ * Added inclusion of freeswan.h.
+ *
+ * Revision 1.5  1998/10/09 04:33:27  rgb
+ * Added 'klips_debug' prefix to all klips printk debug statements.
+ * Fixed output formatting slightly.
+ *
+ * Revision 1.4  1998/07/28 00:06:59  rgb
+ * Add debug detail to tree traversing.
+ *
+ * Revision 1.3  1998/07/14 18:07:58  rgb
+ * Add a routine to clear the eroute tree.
+ *
+ * Revision 1.2  1998/06/25 20:03:22  rgb
+ * Cleanup #endif comments.  Debug output for rj_init.
+ *
+ * Revision 1.1  1998/06/18 21:30:22  henry
+ * move sources from klips/src to klips/net/ipsec to keep stupid kernel
+ * build scripts happier about symlinks
+ *
+ * Revision 1.8  1998/05/25 20:34:15  rgb
+ * Remove temporary ipsec_walk, rj_deltree and rj_delnodes functions.
+ *
+ * Rename ipsec_rj_walker (ipsec_walk) to ipsec_rj_walker_procprint and
+ * add ipsec_rj_walker_delete.
+ *
+ * Recover memory for eroute table on unload of module.
+ *
+ * Revision 1.7  1998/05/21 12:58:58  rgb
+ * Moved 'extern' definitions to ipsec_radij.h to support /proc 3k limit fix.
+ *
+ * Revision 1.6  1998/04/23 20:57:29  rgb
+ * Cleaned up compiler warnings for unused debugging functions.
+ *
+ * Revision 1.5  1998/04/22 16:51:38  rgb
+ * Tidy up radij debug code from recent rash of modifications to debug code.
+ *
+ * Revision 1.4  1998/04/21 21:28:56  rgb
+ * Rearrange debug switches to change on the fly debug output from user
+ * space.  Only kernel changes checked in at this time.  radij.c was also
+ * changed to temporarily remove buggy debugging code in rj_delete causing
+ * an OOPS and hence, netlink device open errors.
+ *
+ * Revision 1.3  1998/04/14 17:30:37  rgb
+ * Fix up compiling errors for radij tree memory reclamation.
+ *
+ * Revision 1.2  1998/04/12 22:03:25  rgb
+ * Updated ESP-3DES-HMAC-MD5-96,
+ *     ESP-DES-HMAC-MD5-96,
+ *     AH-HMAC-MD5-96,
+ *     AH-HMAC-SHA1-96 since Henry started freeswan cvs repository
+ * from old standards (RFC182[5-9] to new (as of March 1998) drafts.
+ *
+ * Fixed eroute references in /proc/net/ipsec*.
+ *
+ * Started to patch module unloading memory leaks in ipsec_netlink and
+ * radij tree unloading.
+ *
+ * Revision 1.1  1998/04/09 03:06:15  henry
+ * sources moved up from linux/net/ipsec
+ *
+ * Revision 1.1.1.1  1998/04/08 05:35:03  henry
+ * RGB's ipsec-0.8pre2.tar.gz ipsec-0.8
+ *
+ * Revision 0.4  1997/01/15 01:28:15  ji
+ * No changes.
+ *
+ * Revision 0.3  1996/11/20 14:39:04  ji
+ * Minor cleanups.
+ * Rationalized debugging code.
+ *
+ * Revision 0.2  1996/11/02 00:18:33  ji
+ * First limited release.
+ *
+ *
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/rangetoa.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,60 @@
+/*
+ * convert binary form of address range to ASCII
+ * Copyright (C) 1998, 1999  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id: rangetoa.c,v 1.9 2004-07-10 07:48:37 mcr Exp $
+ */
+#include "openswan.h"
+
+/*
+ - rangetoa - convert address range to ASCII
+ */
+size_t                         /* space needed for full conversion */
+rangetoa(addrs, format, dst, dstlen)
+struct in_addr addrs[2];
+int format;                    /* character */
+char *dst;                     /* need not be valid if dstlen is 0 */
+size_t dstlen;
+{
+       size_t len;
+       size_t rest;
+       int n;
+       char *p;
+
+       switch (format) {
+       case 0:
+               break;
+       default:
+               return 0;
+               break;
+       }
+
+       len = addrtoa(addrs[0], 0, dst, dstlen);
+       if (len < dstlen)
+               for (p = dst + len - 1, n = 3; len < dstlen && n > 0;
+                                                               p++, len++, n--)
+                       *p = '.';
+       else
+               p = NULL;
+       if (len < dstlen)
+               rest = dstlen - len;
+       else {
+               if (dstlen > 0)
+                       *(dst + dstlen - 1) = '\0';
+               rest = 0;
+       }
+
+       len += addrtoa(addrs[1], 0, p, rest);
+
+       return len;
+}
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/satot.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,133 @@
+/*
+ * convert from binary form of SA ID to text
+ * Copyright (C) 2000, 2001  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id: satot.c,v 1.13 2004-07-10 07:48:37 mcr Exp $
+ */
+#include "openswan.h"
+
+static struct typename {
+       char type;
+       char *name;
+} typenames[] = {
+       { SA_AH,        "ah" },
+       { SA_ESP,       "esp" },
+       { SA_IPIP,      "tun" },
+       { SA_COMP,      "comp" },
+       { SA_INT,       "int" },
+       { 0,            NULL }
+};
+
+/*
+ - satot - convert SA to text "ah507@1.2.3.4"
+ */
+size_t                         /* space needed for full conversion */
+satot(sa, format, dst, dstlen)
+const ip_said *sa;
+int format;                    /* character */
+char *dst;                     /* need not be valid if dstlen is 0 */
+size_t dstlen;
+{
+       size_t len = 0;         /* 0 means "not recognized yet" */
+       int base;
+       int showversion;        /* use delimiter to show IP version? */
+       struct typename *tn;
+       char *p;
+       char *pre;
+       char buf[10+1+ULTOT_BUF+ADDRTOT_BUF];
+       char unk[10];
+
+       switch (format) {
+       case 0:
+               base = 16;
+               showversion = 1;
+               break;
+       case 'f':
+               base = 17;
+               showversion = 1;
+               break;
+       case 'x':
+               base = 'x';
+               showversion = 0;
+               break;
+       case 'd':
+               base = 10;
+               showversion = 0;
+               break;
+       default:
+               return 0;
+               break;
+       }
+
+       memset(buf, 0, sizeof(buf));
+
+       pre = NULL;
+       for (tn = typenames; tn->name != NULL; tn++)
+               if (sa->proto == tn->type) {
+                       pre = tn->name;
+                       break;                  /* NOTE BREAK OUT */
+               }
+       if (pre == NULL) {              /* unknown protocol */
+               strcpy(unk, "unk");
+               (void) ultot((unsigned char)sa->proto, 10, unk+strlen(unk),
+                                               sizeof(unk)-strlen(unk));
+               pre = unk;
+       }
+
+       if (strcmp(pre, PASSTHROUGHTYPE) == 0 &&
+                                       sa->spi == PASSTHROUGHSPI &&
+                                       isunspecaddr(&sa->dst)) {
+               strcpy(buf, (addrtypeof(&sa->dst) == AF_INET) ?
+                                                       PASSTHROUGH4NAME :
+                                                       PASSTHROUGH6NAME);
+               len = strlen(buf);
+       }
+
+       if (sa->proto == SA_INT) {
+               switch (ntohl(sa->spi)) {
+               case SPI_PASS:  p = "%pass";    break;
+               case SPI_DROP:  p = "%drop";    break;
+               case SPI_REJECT:        p = "%reject";  break;
+               case SPI_HOLD:  p = "%hold";    break;
+               case SPI_TRAP:  p = "%trap";    break;
+               case SPI_TRAPSUBNET:    p = "%trapsubnet";      break;
+               default:        p = NULL;       break;
+               }
+               if (p != NULL) {
+                       strcpy(buf, p);
+                       len = strlen(buf);
+               }
+       }
+
+       if (len == 0) {                 /* general case needed */
+               strcpy(buf, pre);
+               len = strlen(buf);
+               if (showversion) {
+                       *(buf+len) = (addrtypeof(&sa->dst) == AF_INET) ? '.' :
+                                                                       ':';
+                       len++;
+                       *(buf+len) = '\0';
+               }
+               len += ultot(ntohl(sa->spi), base, buf+len, sizeof(buf)-len);
+               *(buf+len-1) = '@';
+               len += addrtot(&sa->dst, 0, buf+len, sizeof(buf)-len);
+               *(buf+len) = '\0';
+       }
+
+       if (dst != NULL) {
+               if (len > dstlen)
+                       *(buf+dstlen-1) = '\0';
+               strcpy(dst, buf);
+       }
+       return len;
+}
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/subnetof.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,59 @@
+/*
+ * minor network-address manipulation utilities
+ * Copyright (C) 1998, 1999  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id: subnetof.c,v 1.8 2004-07-10 07:48:37 mcr Exp $
+ */
+#include "openswan.h"
+
+/*
+ - subnetof - given address and mask, return subnet part
+ */
+struct in_addr
+subnetof(addr, mask)
+struct in_addr addr;
+struct in_addr mask;
+{
+       struct in_addr result;
+
+       result.s_addr = addr.s_addr & mask.s_addr;
+       return result;
+}
+
+/*
+ - hostof - given address and mask, return host part
+ */
+struct in_addr
+hostof(addr, mask)
+struct in_addr addr;
+struct in_addr mask;
+{
+       struct in_addr result;
+
+       result.s_addr = addr.s_addr & ~mask.s_addr;
+       return result;
+}
+
+/*
+ - broadcastof - given (network) address and mask, return broadcast address
+ */
+struct in_addr
+broadcastof(addr, mask)
+struct in_addr addr;
+struct in_addr mask;
+{
+       struct in_addr result;
+
+       result.s_addr = addr.s_addr | ~mask.s_addr;
+       return result;
+}
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/subnettoa.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,61 @@
+/*
+ * convert binary form of subnet description to ASCII
+ * Copyright (C) 1998, 1999  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id: subnettoa.c,v 1.11 2004-07-10 07:48:37 mcr Exp $
+ */
+#include "openswan.h"
+
+/*
+ - subnettoa - convert address and mask to ASCII "addr/mask"
+ * Output expresses the mask as a bit count if possible, else dotted decimal.
+ */
+size_t                         /* space needed for full conversion */
+subnettoa(addr, mask, format, dst, dstlen)
+struct in_addr addr;
+struct in_addr mask;
+int format;                    /* character */
+char *dst;                     /* need not be valid if dstlen is 0 */
+size_t dstlen;
+{
+       size_t len;
+       size_t rest;
+       int n;
+       char *p;
+
+       switch (format) {
+       case 0:
+               break;
+       default:
+               return 0;
+               break;
+       }
+
+       len = addrtoa(addr, 0, dst, dstlen);
+       if (len < dstlen) {
+               dst[len - 1] = '/';
+               p = dst + len;
+               rest = dstlen - len;
+       } else {
+               p = NULL;
+               rest = 0;
+       }
+
+       n = masktobits(mask);
+       if (n >= 0)
+               len += ultoa((unsigned long)n, 10, p, rest);
+       else
+               len += addrtoa(mask, 0, p, rest);
+
+       return len;
+}
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/sysctl_net_ipsec.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,217 @@
+/*
+ * sysctl interface to net IPSEC subsystem.
+ * Copyright (C) 1998, 1999, 2000, 2001          Richard Guy Briggs.
+ * 
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ * 
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * RCSID $Id: sysctl_net_ipsec.c,v 1.17.10.2 2007-10-30 21:42:25 paul Exp $
+ */
+
+/* -*- linux-c -*-
+ *
+ * Initiated April 3, 1998, Richard Guy Briggs <rgb@conscoop.ottawa.on.ca>
+ */
+
+#include <linux/version.h>
+#include <linux/mm.h>
+#include <linux/sysctl.h>
+
+#include "openswan/ipsec_param.h"
+
+#ifdef CONFIG_SYSCTL
+
+#define NET_IPSEC 2112 /* Random number */                                        
+#ifdef CONFIG_KLIPS_DEBUG
+extern int       debug_ah;
+extern int       debug_esp;
+extern int       debug_tunnel;
+extern int       debug_eroute;
+extern int       debug_spi;
+extern int       debug_radij;
+extern int       debug_netlink;
+extern int       debug_xform;
+extern int       debug_rcv;
+extern int       debug_pfkey;
+extern int sysctl_ipsec_debug_verbose;
+#ifdef CONFIG_KLIPS_IPCOMP
+extern int sysctl_ipsec_debug_ipcomp;
+#endif /* CONFIG_KLIPS_IPCOMP */
+#endif /* CONFIG_KLIPS_DEBUG */
+
+extern int sysctl_ipsec_icmp;
+extern int sysctl_ipsec_inbound_policy_check;
+extern int sysctl_ipsec_tos;
+int sysctl_ipsec_regress_pfkey_lossage;
+
+enum {
+#ifdef CONFIG_KLIPS_DEBUG
+       NET_IPSEC_DEBUG_AH=1,
+       NET_IPSEC_DEBUG_ESP=2,
+       NET_IPSEC_DEBUG_TUNNEL=3,
+       NET_IPSEC_DEBUG_EROUTE=4,
+       NET_IPSEC_DEBUG_SPI=5,
+       NET_IPSEC_DEBUG_RADIJ=6,
+       NET_IPSEC_DEBUG_NETLINK=7,
+       NET_IPSEC_DEBUG_XFORM=8,
+       NET_IPSEC_DEBUG_RCV=9,
+       NET_IPSEC_DEBUG_PFKEY=10,
+       NET_IPSEC_DEBUG_VERBOSE=11,
+       NET_IPSEC_DEBUG_IPCOMP=12,
+#endif /* CONFIG_KLIPS_DEBUG */
+       NET_IPSEC_ICMP=13,
+       NET_IPSEC_INBOUND_POLICY_CHECK=14,
+       NET_IPSEC_TOS=15,
+       NET_IPSEC_REGRESS_PFKEY_LOSSAGE=16,
+};
+
+static ctl_table ipsec_table[] = {
+#ifdef CONFIG_KLIPS_DEBUG
+       { NET_IPSEC_DEBUG_AH, "debug_ah", &debug_ah,
+         sizeof(int), 0644, NULL, .proc_handler = &proc_dointvec},    
+       { NET_IPSEC_DEBUG_ESP, "debug_esp", &debug_esp,
+         sizeof(int), 0644, NULL, .proc_handler = &proc_dointvec},    
+       { NET_IPSEC_DEBUG_TUNNEL, "debug_tunnel", &debug_tunnel,
+         sizeof(int), 0644, NULL, .proc_handler = &proc_dointvec},    
+       { NET_IPSEC_DEBUG_EROUTE, "debug_eroute", &debug_eroute,
+         sizeof(int), 0644, NULL, .proc_handler = &proc_dointvec},    
+       { NET_IPSEC_DEBUG_SPI, "debug_spi", &debug_spi,
+         sizeof(int), 0644, NULL, .proc_handler = &proc_dointvec},    
+       { NET_IPSEC_DEBUG_RADIJ, "debug_radij", &debug_radij,
+         sizeof(int), 0644, NULL, .proc_handler = &proc_dointvec},    
+       { NET_IPSEC_DEBUG_NETLINK, "debug_netlink", &debug_netlink,
+         sizeof(int), 0644, NULL, .proc_handler = &proc_dointvec},    
+       { NET_IPSEC_DEBUG_XFORM, "debug_xform", &debug_xform,
+         sizeof(int), 0644, NULL, .proc_handler = &proc_dointvec},    
+       { NET_IPSEC_DEBUG_RCV, "debug_rcv", &debug_rcv,
+         sizeof(int), 0644, NULL, .proc_handler = &proc_dointvec},    
+       { NET_IPSEC_DEBUG_PFKEY, "debug_pfkey", &debug_pfkey,
+         sizeof(int), 0644, NULL, .proc_handler = &proc_dointvec},    
+       { NET_IPSEC_DEBUG_VERBOSE, "debug_verbose",&sysctl_ipsec_debug_verbose,
+         sizeof(int), 0644, NULL, .proc_handler = &proc_dointvec},    
+#ifdef CONFIG_KLIPS_IPCOMP
+       { NET_IPSEC_DEBUG_IPCOMP, "debug_ipcomp", &sysctl_ipsec_debug_ipcomp,
+         sizeof(int), 0644, NULL, .proc_handler = &proc_dointvec},    
+#endif /* CONFIG_KLIPS_IPCOMP */
+
+#ifdef CONFIG_KLIPS_REGRESS
+       { NET_IPSEC_REGRESS_PFKEY_LOSSAGE, "pfkey_lossage",
+         &sysctl_ipsec_regress_pfkey_lossage,
+         sizeof(int), 0644, NULL, .proc_handler = &proc_dointvec},
+#endif /* CONFIG_KLIPS_REGRESS */
+
+#endif /* CONFIG_KLIPS_DEBUG */
+       { NET_IPSEC_ICMP, "icmp", &sysctl_ipsec_icmp,
+         sizeof(int), 0644, NULL, .proc_handler = &proc_dointvec},    
+       { NET_IPSEC_INBOUND_POLICY_CHECK, "inbound_policy_check", &sysctl_ipsec_inbound_policy_check,
+         sizeof(int), 0644, NULL, .proc_handler = &proc_dointvec},    
+       { NET_IPSEC_TOS, "tos", &sysctl_ipsec_tos,
+         sizeof(int), 0644, NULL, .proc_handler = &proc_dointvec},    
+       {0}
+};
+
+static ctl_table ipsec_net_table[] = {
+        { NET_IPSEC, "ipsec", NULL, 0, 0555, ipsec_table },
+        { 0 }
+};
+ 
+static ctl_table ipsec_root_table[] = {
+        { CTL_NET, "net", NULL, 0, 0555, ipsec_net_table },
+        { 0 }
+};
+ 
+static struct ctl_table_header *ipsec_table_header;
+
+int ipsec_sysctl_register(void)
+{
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,21)
+        ipsec_table_header = register_sysctl_table(ipsec_root_table);
+#else
+        ipsec_table_header = register_sysctl_table(ipsec_root_table, 0);
+#endif
+        if (!ipsec_table_header) {
+                return -ENOMEM;
+       }
+        return 0;
+}
+ 
+void ipsec_sysctl_unregister(void)
+{
+        unregister_sysctl_table(ipsec_table_header);
+}
+
+#endif /* CONFIG_SYSCTL */
+
+/*
+ * $Log: sysctl_net_ipsec.c,v $
+ * Revision 1.17.10.2  2007-10-30 21:42:25  paul
+ * The kernel has changed the layout of ctl_table (defined in
+ * linux/sysctl.h).  Unfortunately, a new field has been inserted before
+ * the last one we wish to initialize in ipsec_table.
+ *
+ * The easiest fix that works with old and new kernels is to use an
+ * initializer that explicitly says which field is being initialized.
+ *
+ * Patch by dhr
+ *
+ * Revision 1.17.10.1  2007/09/05 02:54:13  paul
+ * register_sysctl_table() takes one argument for 2.6.21+ [david]
+ *
+ * Revision 1.17  2004/07/10 19:11:18  mcr
+ *     CONFIG_IPSEC -> CONFIG_KLIPS.
+ *
+ * Revision 1.16  2004/04/06 02:49:26  mcr
+ *     pullup of algo code from alg-branch.
+ *
+ * Revision 1.15  2002/04/24 07:55:32  mcr
+ *     #include patches and Makefiles for post-reorg compilation.
+ *
+ * Revision 1.14  2002/04/24 07:36:35  mcr
+ * Moved from ./klips/net/ipsec/sysctl_net_ipsec.c,v
+ *
+ * Revision 1.13  2002/01/12 02:58:32  mcr
+ *     first regression test causes acquire messages to be lost
+ *     100% of the time. This is to help testing of pluto.
+ *
+ * Revision 1.12  2001/06/14 19:35:13  rgb
+ * Update copyright date.
+ *
+ * Revision 1.11  2001/02/26 19:58:13  rgb
+ * Drop sysctl_ipsec_{no_eroute_pass,opportunistic}, replaced by magic SAs.
+ *
+ * Revision 1.10  2000/09/16 01:50:15  rgb
+ * Protect sysctl_ipsec_debug_ipcomp with compiler defines too so that the
+ * linker won't blame rj_delete() for missing symbols.  ;->  Damn statics...
+ *
+ * Revision 1.9  2000/09/15 23:17:51  rgb
+ * Moved stuff around to compile with debug off.
+ *
+ * Revision 1.8  2000/09/15 11:37:02  rgb
+ * Merge in heavily modified Svenning Soerensen's <svenning@post5.tele.dk>
+ * IPCOMP zlib deflate code.
+ *
+ * Revision 1.7  2000/09/15 07:37:15  rgb
+ * Munged silly log comment that was causing a warning.
+ *
+ * Revision 1.6  2000/09/15 04:58:23  rgb
+ * Added tos runtime switch.
+ * Removed 'sysctl_ipsec_' prefix from /proc/sys/net/ipsec/ filenames.
+ *
+ * Revision 1.5  2000/09/12 03:25:28  rgb
+ * Filled in and implemented sysctl.
+ *
+ * Revision 1.4  1999/04/11 00:29:03  henry
+ * GPL boilerplate
+ *
+ * Revision 1.3  1999/04/06 04:54:29  rgb
+ * Fix/Add RCSID Id: and Log: bits to make PHMDs happy.  This includes
+ * patch shell fixes.
+ *
+ */
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/trees.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,1214 @@
+/* trees.c -- output deflated data using Huffman coding
+ * Copyright (C) 1995-2002 Jean-loup Gailly
+ * For conditions of distribution and use, see copyright notice in zlib.h 
+ */
+
+/*
+ *  ALGORITHM
+ *
+ *      The "deflation" process uses several Huffman trees. The more
+ *      common source values are represented by shorter bit sequences.
+ *
+ *      Each code tree is stored in a compressed form which is itself
+ * a Huffman encoding of the lengths of all the code strings (in
+ * ascending order by source values).  The actual code strings are
+ * reconstructed from the lengths in the inflate process, as described
+ * in the deflate specification.
+ *
+ *  REFERENCES
+ *
+ *      Deutsch, L.P.,"'Deflate' Compressed Data Format Specification".
+ *      Available in ftp.uu.net:/pub/archiving/zip/doc/deflate-1.1.doc
+ *
+ *      Storer, James A.
+ *          Data Compression:  Methods and Theory, pp. 49-50.
+ *          Computer Science Press, 1988.  ISBN 0-7167-8156-5.
+ *
+ *      Sedgewick, R.
+ *          Algorithms, p290.
+ *          Addison-Wesley, 1983. ISBN 0-201-06672-6.
+ */
+
+/* @(#) $Id: trees.c,v 1.4 2004-07-10 07:48:39 mcr Exp $ */
+
+/* #define GEN_TREES_H */
+
+#include "deflate.h"
+
+#ifdef DEBUG
+#  include <ctype.h>
+#endif
+
+/* ===========================================================================
+ * Constants
+ */
+
+#define MAX_BL_BITS 7
+/* Bit length codes must not exceed MAX_BL_BITS bits */
+
+#define END_BLOCK 256
+/* end of block literal code */
+
+#define REP_3_6      16
+/* repeat previous bit length 3-6 times (2 bits of repeat count) */
+
+#define REPZ_3_10    17
+/* repeat a zero length 3-10 times  (3 bits of repeat count) */
+
+#define REPZ_11_138  18
+/* repeat a zero length 11-138 times  (7 bits of repeat count) */
+
+local const int extra_lbits[LENGTH_CODES] /* extra bits for each length code */
+   = {0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0};
+
+local const int extra_dbits[D_CODES] /* extra bits for each distance code */
+   = {0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13};
+
+local const int extra_blbits[BL_CODES]/* extra bits for each bit length code */
+   = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7};
+
+local const uch bl_order[BL_CODES]
+   = {16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15};
+/* The lengths of the bit length codes are sent in order of decreasing
+ * probability, to avoid transmitting the lengths for unused bit length codes.
+ */
+
+#define Buf_size (8 * 2*sizeof(char))
+/* Number of bits used within bi_buf. (bi_buf might be implemented on
+ * more than 16 bits on some systems.)
+ */
+
+/* ===========================================================================
+ * Local data. These are initialized only once.
+ */
+
+#define DIST_CODE_LEN  512 /* see definition of array dist_code below */
+
+#if defined(GEN_TREES_H) || !defined(STDC)
+/* non ANSI compilers may not accept trees.h */
+
+local ct_data static_ltree[L_CODES+2];
+/* The static literal tree. Since the bit lengths are imposed, there is no
+ * need for the L_CODES extra codes used during heap construction. However
+ * The codes 286 and 287 are needed to build a canonical tree (see _tr_init
+ * below).
+ */
+
+local ct_data static_dtree[D_CODES];
+/* The static distance tree. (Actually a trivial tree since all codes use
+ * 5 bits.)
+ */
+
+uch _dist_code[DIST_CODE_LEN];
+/* Distance codes. The first 256 values correspond to the distances
+ * 3 .. 258, the last 256 values correspond to the top 8 bits of
+ * the 15 bit distances.
+ */
+
+uch _length_code[MAX_MATCH-MIN_MATCH+1];
+/* length code for each normalized match length (0 == MIN_MATCH) */
+
+local int base_length[LENGTH_CODES];
+/* First normalized length for each code (0 = MIN_MATCH) */
+
+local int base_dist[D_CODES];
+/* First normalized distance for each code (0 = distance of 1) */
+
+#else
+#  include "trees.h"
+#endif /* GEN_TREES_H */
+
+struct static_tree_desc_s {
+    const ct_data *static_tree;  /* static tree or NULL */
+    const intf *extra_bits;      /* extra bits for each code or NULL */
+    int     extra_base;          /* base index for extra_bits */
+    int     elems;               /* max number of elements in the tree */
+    int     max_length;          /* max bit length for the codes */
+};
+
+local static_tree_desc  static_l_desc =
+{static_ltree, extra_lbits, LITERALS+1, L_CODES, MAX_BITS};
+
+local static_tree_desc  static_d_desc =
+{static_dtree, extra_dbits, 0,          D_CODES, MAX_BITS};
+
+local static_tree_desc  static_bl_desc =
+{(const ct_data *)0, extra_blbits, 0,   BL_CODES, MAX_BL_BITS};
+
+/* ===========================================================================
+ * Local (static) routines in this file.
+ */
+
+local void tr_static_init OF((void));
+local void init_block     OF((deflate_state *s));
+local void pqdownheap     OF((deflate_state *s, ct_data *tree, int k));
+local void gen_bitlen     OF((deflate_state *s, tree_desc *desc));
+local void gen_codes      OF((ct_data *tree, int max_code, ushf *bl_count));
+local void build_tree     OF((deflate_state *s, tree_desc *desc));
+local void scan_tree      OF((deflate_state *s, ct_data *tree, int max_code));
+local void send_tree      OF((deflate_state *s, ct_data *tree, int max_code));
+local int  build_bl_tree  OF((deflate_state *s));
+local void send_all_trees OF((deflate_state *s, int lcodes, int dcodes,
+                              int blcodes));
+local void compress_block OF((deflate_state *s, const ct_data *ltree,
+                              const ct_data *dtree));
+local void set_data_type  OF((deflate_state *s));
+local unsigned bi_reverse OF((unsigned value, int length));
+local void bi_windup      OF((deflate_state *s));
+local void bi_flush       OF((deflate_state *s));
+local void copy_block     OF((deflate_state *s, charf *buf, unsigned len,
+                              int header));
+
+#ifdef GEN_TREES_H
+local void gen_trees_header OF((void));
+#endif
+
+#ifndef DEBUG
+#  define send_code(s, c, tree) send_bits(s, tree[c].Code, tree[c].Len)
+   /* Send a code of the given tree. c and tree must not have side effects */
+
+#else /* DEBUG */
+#  define send_code(s, c, tree) \
+     { if (z_verbose>2) fprintf(stderr,"\ncd %3d ",(c)); \
+       send_bits(s, tree[c].Code, tree[c].Len); }
+#endif
+
+/* ===========================================================================
+ * Output a short LSB first on the stream.
+ * IN assertion: there is enough room in pendingBuf.
+ */
+#define put_short(s, w) { \
+    put_byte(s, (uch)((w) & 0xff)); \
+    put_byte(s, (uch)((ush)(w) >> 8)); \
+}
+
+/* ===========================================================================
+ * Send a value on a given number of bits.
+ * IN assertion: length <= 16 and value fits in length bits.
+ */
+#ifdef DEBUG
+local void send_bits      OF((deflate_state *s, int value, int length));
+
+local void send_bits(s, value, length)
+    deflate_state *s;
+    int value;  /* value to send */
+    int length; /* number of bits */
+{
+    Tracevv((stderr," l %2d v %4x ", length, value));
+    Assert(length > 0 && length <= 15, "invalid length");
+    s->bits_sent += (ulg)length;
+
+    /* If not enough room in bi_buf, use (valid) bits from bi_buf and
+     * (16 - bi_valid) bits from value, leaving (width - (16-bi_valid))
+     * unused bits in value.
+     */
+    if (s->bi_valid > (int)Buf_size - length) {
+        s->bi_buf |= (value << s->bi_valid);
+        put_short(s, s->bi_buf);
+        s->bi_buf = (ush)value >> (Buf_size - s->bi_valid);
+        s->bi_valid += length - Buf_size;
+    } else {
+        s->bi_buf |= value << s->bi_valid;
+        s->bi_valid += length;
+    }
+}
+#else /* !DEBUG */
+
+#define send_bits(s, value, length) \
+{ int len = length;\
+  if (s->bi_valid > (int)Buf_size - len) {\
+    int val = value;\
+    s->bi_buf |= (val << s->bi_valid);\
+    put_short(s, s->bi_buf);\
+    s->bi_buf = (ush)val >> (Buf_size - s->bi_valid);\
+    s->bi_valid += len - Buf_size;\
+  } else {\
+    s->bi_buf |= (value) << s->bi_valid;\
+    s->bi_valid += len;\
+  }\
+}
+#endif /* DEBUG */
+
+
+#define MAX(a,b) (a >= b ? a : b)
+/* the arguments must not have side effects */
+
+/* ===========================================================================
+ * Initialize the various 'constant' tables.
+ */
+local void tr_static_init()
+{
+#if defined(GEN_TREES_H) || !defined(STDC)
+    static int static_init_done = 0;
+    int n;        /* iterates over tree elements */
+    int bits;     /* bit counter */
+    int length;   /* length value */
+    int code;     /* code value */
+    int dist;     /* distance index */
+    ush bl_count[MAX_BITS+1];
+    /* number of codes at each bit length for an optimal tree */
+
+    if (static_init_done) return;
+
+    /* For some embedded targets, global variables are not initialized: */
+    static_l_desc.static_tree = static_ltree;
+    static_l_desc.extra_bits = extra_lbits;
+    static_d_desc.static_tree = static_dtree;
+    static_d_desc.extra_bits = extra_dbits;
+    static_bl_desc.extra_bits = extra_blbits;
+
+    /* Initialize the mapping length (0..255) -> length code (0..28) */
+    length = 0;
+    for (code = 0; code < LENGTH_CODES-1; code++) {
+        base_length[code] = length;
+        for (n = 0; n < (1<<extra_lbits[code]); n++) {
+            _length_code[length++] = (uch)code;
+        }
+    }
+    Assert (length == 256, "tr_static_init: length != 256");
+    /* Note that the length 255 (match length 258) can be represented
+     * in two different ways: code 284 + 5 bits or code 285, so we
+     * overwrite length_code[255] to use the best encoding:
+     */
+    _length_code[length-1] = (uch)code;
+
+    /* Initialize the mapping dist (0..32K) -> dist code (0..29) */
+    dist = 0;
+    for (code = 0 ; code < 16; code++) {
+        base_dist[code] = dist;
+        for (n = 0; n < (1<<extra_dbits[code]); n++) {
+            _dist_code[dist++] = (uch)code;
+        }
+    }
+    Assert (dist == 256, "tr_static_init: dist != 256");
+    dist >>= 7; /* from now on, all distances are divided by 128 */
+    for ( ; code < D_CODES; code++) {
+        base_dist[code] = dist << 7;
+        for (n = 0; n < (1<<(extra_dbits[code]-7)); n++) {
+            _dist_code[256 + dist++] = (uch)code;
+        }
+    }
+    Assert (dist == 256, "tr_static_init: 256+dist != 512");
+
+    /* Construct the codes of the static literal tree */
+    for (bits = 0; bits <= MAX_BITS; bits++) bl_count[bits] = 0;
+    n = 0;
+    while (n <= 143) static_ltree[n++].Len = 8, bl_count[8]++;
+    while (n <= 255) static_ltree[n++].Len = 9, bl_count[9]++;
+    while (n <= 279) static_ltree[n++].Len = 7, bl_count[7]++;
+    while (n <= 287) static_ltree[n++].Len = 8, bl_count[8]++;
+    /* Codes 286 and 287 do not exist, but we must include them in the
+     * tree construction to get a canonical Huffman tree (longest code
+     * all ones)
+     */
+    gen_codes((ct_data *)static_ltree, L_CODES+1, bl_count);
+
+    /* The static distance tree is trivial: */
+    for (n = 0; n < D_CODES; n++) {
+        static_dtree[n].Len = 5;
+        static_dtree[n].Code = bi_reverse((unsigned)n, 5);
+    }
+    static_init_done = 1;
+
+#  ifdef GEN_TREES_H
+    gen_trees_header();
+#  endif
+#endif /* defined(GEN_TREES_H) || !defined(STDC) */
+}
+
+/* ===========================================================================
+ * Genererate the file trees.h describing the static trees.
+ */
+#ifdef GEN_TREES_H
+#  ifndef DEBUG
+#    include <stdio.h>
+#  endif
+
+#  define SEPARATOR(i, last, width) \
+      ((i) == (last)? "\n};\n\n" :    \
+       ((i) % (width) == (width)-1 ? ",\n" : ", "))
+
+void gen_trees_header()
+{
+    FILE *header = fopen("trees.h", "w");
+    int i;
+
+    Assert (header != NULL, "Can't open trees.h");
+    fprintf(header,
+           "/* header created automatically with -DGEN_TREES_H */\n\n");
+
+    fprintf(header, "local const ct_data static_ltree[L_CODES+2] = {\n");
+    for (i = 0; i < L_CODES+2; i++) {
+       fprintf(header, "{{%3u},{%3u}}%s", static_ltree[i].Code,
+               static_ltree[i].Len, SEPARATOR(i, L_CODES+1, 5));
+    }
+
+    fprintf(header, "local const ct_data static_dtree[D_CODES] = {\n");
+    for (i = 0; i < D_CODES; i++) {
+       fprintf(header, "{{%2u},{%2u}}%s", static_dtree[i].Code,
+               static_dtree[i].Len, SEPARATOR(i, D_CODES-1, 5));
+    }
+
+    fprintf(header, "const uch _dist_code[DIST_CODE_LEN] = {\n");
+    for (i = 0; i < DIST_CODE_LEN; i++) {
+       fprintf(header, "%2u%s", _dist_code[i],
+               SEPARATOR(i, DIST_CODE_LEN-1, 20));
+    }
+
+    fprintf(header, "const uch _length_code[MAX_MATCH-MIN_MATCH+1]= {\n");
+    for (i = 0; i < MAX_MATCH-MIN_MATCH+1; i++) {
+       fprintf(header, "%2u%s", _length_code[i],
+               SEPARATOR(i, MAX_MATCH-MIN_MATCH, 20));
+    }
+
+    fprintf(header, "local const int base_length[LENGTH_CODES] = {\n");
+    for (i = 0; i < LENGTH_CODES; i++) {
+       fprintf(header, "%1u%s", base_length[i],
+               SEPARATOR(i, LENGTH_CODES-1, 20));
+    }
+
+    fprintf(header, "local const int base_dist[D_CODES] = {\n");
+    for (i = 0; i < D_CODES; i++) {
+       fprintf(header, "%5u%s", base_dist[i],
+               SEPARATOR(i, D_CODES-1, 10));
+    }
+
+    fclose(header);
+}
+#endif /* GEN_TREES_H */
+
+/* ===========================================================================
+ * Initialize the tree data structures for a new zlib stream.
+ */
+void _tr_init(s)
+    deflate_state *s;
+{
+    tr_static_init();
+
+    s->l_desc.dyn_tree = s->dyn_ltree;
+    s->l_desc.stat_desc = &static_l_desc;
+
+    s->d_desc.dyn_tree = s->dyn_dtree;
+    s->d_desc.stat_desc = &static_d_desc;
+
+    s->bl_desc.dyn_tree = s->bl_tree;
+    s->bl_desc.stat_desc = &static_bl_desc;
+
+    s->bi_buf = 0;
+    s->bi_valid = 0;
+    s->last_eob_len = 8; /* enough lookahead for inflate */
+#ifdef DEBUG
+    s->compressed_len = 0L;
+    s->bits_sent = 0L;
+#endif
+
+    /* Initialize the first block of the first file: */
+    init_block(s);
+}
+
+/* ===========================================================================
+ * Initialize a new block.
+ */
+local void init_block(s)
+    deflate_state *s;
+{
+    int n; /* iterates over tree elements */
+
+    /* Initialize the trees. */
+    for (n = 0; n < L_CODES;  n++) s->dyn_ltree[n].Freq = 0;
+    for (n = 0; n < D_CODES;  n++) s->dyn_dtree[n].Freq = 0;
+    for (n = 0; n < BL_CODES; n++) s->bl_tree[n].Freq = 0;
+
+    s->dyn_ltree[END_BLOCK].Freq = 1;
+    s->opt_len = s->static_len = 0L;
+    s->last_lit = s->matches = 0;
+}
+
+#define SMALLEST 1
+/* Index within the heap array of least frequent node in the Huffman tree */
+
+
+/* ===========================================================================
+ * Remove the smallest element from the heap and recreate the heap with
+ * one less element. Updates heap and heap_len.
+ */
+#define pqremove(s, tree, top) \
+{\
+    top = s->heap[SMALLEST]; \
+    s->heap[SMALLEST] = s->heap[s->heap_len--]; \
+    pqdownheap(s, tree, SMALLEST); \
+}
+
+/* ===========================================================================
+ * Compares to subtrees, using the tree depth as tie breaker when
+ * the subtrees have equal frequency. This minimizes the worst case length.
+ */
+#define smaller(tree, n, m, depth) \
+   (tree[n].Freq < tree[m].Freq || \
+   (tree[n].Freq == tree[m].Freq && depth[n] <= depth[m]))
+
+/* ===========================================================================
+ * Restore the heap property by moving down the tree starting at node k,
+ * exchanging a node with the smallest of its two sons if necessary, stopping
+ * when the heap property is re-established (each father smaller than its
+ * two sons).
+ */
+local void pqdownheap(s, tree, k)
+    deflate_state *s;
+    ct_data *tree;  /* the tree to restore */
+    int k;               /* node to move down */
+{
+    int v = s->heap[k];
+    int j = k << 1;  /* left son of k */
+    while (j <= s->heap_len) {
+        /* Set j to the smallest of the two sons: */
+        if (j < s->heap_len &&
+            smaller(tree, s->heap[j+1], s->heap[j], s->depth)) {
+            j++;
+        }
+        /* Exit if v is smaller than both sons */
+        if (smaller(tree, v, s->heap[j], s->depth)) break;
+
+        /* Exchange v with the smallest son */
+        s->heap[k] = s->heap[j];  k = j;
+
+        /* And continue down the tree, setting j to the left son of k */
+        j <<= 1;
+    }
+    s->heap[k] = v;
+}
+
+/* ===========================================================================
+ * Compute the optimal bit lengths for a tree and update the total bit length
+ * for the current block.
+ * IN assertion: the fields freq and dad are set, heap[heap_max] and
+ *    above are the tree nodes sorted by increasing frequency.
+ * OUT assertions: the field len is set to the optimal bit length, the
+ *     array bl_count contains the frequencies for each bit length.
+ *     The length opt_len is updated; static_len is also updated if stree is
+ *     not null.
+ */
+local void gen_bitlen(s, desc)
+    deflate_state *s;
+    tree_desc *desc;    /* the tree descriptor */
+{
+    ct_data *tree        = desc->dyn_tree;
+    int max_code         = desc->max_code;
+    const ct_data *stree = desc->stat_desc->static_tree;
+    const intf *extra    = desc->stat_desc->extra_bits;
+    int base             = desc->stat_desc->extra_base;
+    int max_length       = desc->stat_desc->max_length;
+    int h;              /* heap index */
+    int n, m;           /* iterate over the tree elements */
+    int bits;           /* bit length */
+    int xbits;          /* extra bits */
+    ush f;              /* frequency */
+    int overflow = 0;   /* number of elements with bit length too large */
+
+    for (bits = 0; bits <= MAX_BITS; bits++) s->bl_count[bits] = 0;
+
+    /* In a first pass, compute the optimal bit lengths (which may
+     * overflow in the case of the bit length tree).
+     */
+    tree[s->heap[s->heap_max]].Len = 0; /* root of the heap */
+
+    for (h = s->heap_max+1; h < HEAP_SIZE; h++) {
+        n = s->heap[h];
+        bits = tree[tree[n].Dad].Len + 1;
+        if (bits > max_length) bits = max_length, overflow++;
+        tree[n].Len = (ush)bits;
+        /* We overwrite tree[n].Dad which is no longer needed */
+
+        if (n > max_code) continue; /* not a leaf node */
+
+        s->bl_count[bits]++;
+        xbits = 0;
+        if (n >= base) xbits = extra[n-base];
+        f = tree[n].Freq;
+        s->opt_len += (ulg)f * (bits + xbits);
+        if (stree) s->static_len += (ulg)f * (stree[n].Len + xbits);
+    }
+    if (overflow == 0) return;
+
+    Trace((stderr,"\nbit length overflow\n"));
+    /* This happens for example on obj2 and pic of the Calgary corpus */
+
+    /* Find the first bit length which could increase: */
+    do {
+        bits = max_length-1;
+        while (s->bl_count[bits] == 0) bits--;
+        s->bl_count[bits]--;      /* move one leaf down the tree */
+        s->bl_count[bits+1] += 2; /* move one overflow item as its brother */
+        s->bl_count[max_length]--;
+        /* The brother of the overflow item also moves one step up,
+         * but this does not affect bl_count[max_length]
+         */
+        overflow -= 2;
+    } while (overflow > 0);
+
+    /* Now recompute all bit lengths, scanning in increasing frequency.
+     * h is still equal to HEAP_SIZE. (It is simpler to reconstruct all
+     * lengths instead of fixing only the wrong ones. This idea is taken
+     * from 'ar' written by Haruhiko Okumura.)
+     */
+    for (bits = max_length; bits != 0; bits--) {
+        n = s->bl_count[bits];
+        while (n != 0) {
+            m = s->heap[--h];
+            if (m > max_code) continue;
+            if (tree[m].Len != (unsigned) bits) {
+                Trace((stderr,"code %d bits %d->%d\n", m, tree[m].Len, bits));
+                s->opt_len += ((long)bits - (long)tree[m].Len)
+                              *(long)tree[m].Freq;
+                tree[m].Len = (ush)bits;
+            }
+            n--;
+        }
+    }
+}
+
+/* ===========================================================================
+ * Generate the codes for a given tree and bit counts (which need not be
+ * optimal).
+ * IN assertion: the array bl_count contains the bit length statistics for
+ * the given tree and the field len is set for all tree elements.
+ * OUT assertion: the field code is set for all tree elements of non
+ *     zero code length.
+ */
+local void gen_codes (tree, max_code, bl_count)
+    ct_data *tree;             /* the tree to decorate */
+    int max_code;              /* largest code with non zero frequency */
+    ushf *bl_count;            /* number of codes at each bit length */
+{
+    ush next_code[MAX_BITS+1]; /* next code value for each bit length */
+    ush code = 0;              /* running code value */
+    int bits;                  /* bit index */
+    int n;                     /* code index */
+
+    /* The distribution counts are first used to generate the code values
+     * without bit reversal.
+     */
+    for (bits = 1; bits <= MAX_BITS; bits++) {
+        next_code[bits] = code = (code + bl_count[bits-1]) << 1;
+    }
+    /* Check that the bit counts in bl_count are consistent. The last code
+     * must be all ones.
+     */
+    Assert (code + bl_count[MAX_BITS]-1 == (1<<MAX_BITS)-1,
+            "inconsistent bit counts");
+    Tracev((stderr,"\ngen_codes: max_code %d ", max_code));
+
+    for (n = 0;  n <= max_code; n++) {
+        int len = tree[n].Len;
+        if (len == 0) continue;
+        /* Now reverse the bits */
+        tree[n].Code = bi_reverse(next_code[len]++, len);
+
+        Tracecv(tree != static_ltree, (stderr,"\nn %3d %c l %2d c %4x (%x) ",
+             n, (isgraph(n) ? n : ' '), len, tree[n].Code, next_code[len]-1));
+    }
+}
+
+/* ===========================================================================
+ * Construct one Huffman tree and assigns the code bit strings and lengths.
+ * Update the total bit length for the current block.
+ * IN assertion: the field freq is set for all tree elements.
+ * OUT assertions: the fields len and code are set to the optimal bit length
+ *     and corresponding code. The length opt_len is updated; static_len is
+ *     also updated if stree is not null. The field max_code is set.
+ */
+local void build_tree(s, desc)
+    deflate_state *s;
+    tree_desc *desc; /* the tree descriptor */
+{
+    ct_data *tree         = desc->dyn_tree;
+    const ct_data *stree  = desc->stat_desc->static_tree;
+    int elems             = desc->stat_desc->elems;
+    int n, m;          /* iterate over heap elements */
+    int max_code = -1; /* largest code with non zero frequency */
+    int node;          /* new node being created */
+
+    /* Construct the initial heap, with least frequent element in
+     * heap[SMALLEST]. The sons of heap[n] are heap[2*n] and heap[2*n+1].
+     * heap[0] is not used.
+     */
+    s->heap_len = 0, s->heap_max = HEAP_SIZE;
+
+    for (n = 0; n < elems; n++) {
+        if (tree[n].Freq != 0) {
+            s->heap[++(s->heap_len)] = max_code = n;
+            s->depth[n] = 0;
+        } else {
+            tree[n].Len = 0;
+        }
+    }
+
+    /* The pkzip format requires that at least one distance code exists,
+     * and that at least one bit should be sent even if there is only one
+     * possible code. So to avoid special checks later on we force at least
+     * two codes of non zero frequency.
+     */
+    while (s->heap_len < 2) {
+        node = s->heap[++(s->heap_len)] = (max_code < 2 ? ++max_code : 0);
+        tree[node].Freq = 1;
+        s->depth[node] = 0;
+        s->opt_len--; if (stree) s->static_len -= stree[node].Len;
+        /* node is 0 or 1 so it does not have extra bits */
+    }
+    desc->max_code = max_code;
+
+    /* The elements heap[heap_len/2+1 .. heap_len] are leaves of the tree,
+     * establish sub-heaps of increasing lengths:
+     */
+    for (n = s->heap_len/2; n >= 1; n--) pqdownheap(s, tree, n);
+
+    /* Construct the Huffman tree by repeatedly combining the least two
+     * frequent nodes.
+     */
+    node = elems;              /* next internal node of the tree */
+    do {
+        pqremove(s, tree, n);  /* n = node of least frequency */
+        m = s->heap[SMALLEST]; /* m = node of next least frequency */
+
+        s->heap[--(s->heap_max)] = n; /* keep the nodes sorted by frequency */
+        s->heap[--(s->heap_max)] = m;
+
+        /* Create a new node father of n and m */
+        tree[node].Freq = tree[n].Freq + tree[m].Freq;
+        s->depth[node] = (uch) (MAX(s->depth[n], s->depth[m]) + 1);
+        tree[n].Dad = tree[m].Dad = (ush)node;
+#ifdef DUMP_BL_TREE
+        if (tree == s->bl_tree) {
+            fprintf(stderr,"\nnode %d(%d), sons %d(%d) %d(%d)",
+                    node, tree[node].Freq, n, tree[n].Freq, m, tree[m].Freq);
+        }
+#endif
+        /* and insert the new node in the heap */
+        s->heap[SMALLEST] = node++;
+        pqdownheap(s, tree, SMALLEST);
+
+    } while (s->heap_len >= 2);
+
+    s->heap[--(s->heap_max)] = s->heap[SMALLEST];
+
+    /* At this point, the fields freq and dad are set. We can now
+     * generate the bit lengths.
+     */
+    gen_bitlen(s, (tree_desc *)desc);
+
+    /* The field len is now set, we can generate the bit codes */
+    gen_codes ((ct_data *)tree, max_code, s->bl_count);
+}
+
+/* ===========================================================================
+ * Scan a literal or distance tree to determine the frequencies of the codes
+ * in the bit length tree.
+ */
+local void scan_tree (s, tree, max_code)
+    deflate_state *s;
+    ct_data *tree;   /* the tree to be scanned */
+    int max_code;    /* and its largest code of non zero frequency */
+{
+    int n;                     /* iterates over all tree elements */
+    int prevlen = -1;          /* last emitted length */
+    int curlen;                /* length of current code */
+    int nextlen = tree[0].Len; /* length of next code */
+    int count = 0;             /* repeat count of the current code */
+    int max_count = 7;         /* max repeat count */
+    int min_count = 4;         /* min repeat count */
+
+    if (nextlen == 0) max_count = 138, min_count = 3;
+    tree[max_code+1].Len = (ush)0xffff; /* guard */
+
+    for (n = 0; n <= max_code; n++) {
+        curlen = nextlen; nextlen = tree[n+1].Len;
+        if (++count < max_count && curlen == nextlen) {
+            continue;
+        } else if (count < min_count) {
+            s->bl_tree[curlen].Freq += count;
+        } else if (curlen != 0) {
+            if (curlen != prevlen) s->bl_tree[curlen].Freq++;
+            s->bl_tree[REP_3_6].Freq++;
+        } else if (count <= 10) {
+            s->bl_tree[REPZ_3_10].Freq++;
+        } else {
+            s->bl_tree[REPZ_11_138].Freq++;
+        }
+        count = 0; prevlen = curlen;
+        if (nextlen == 0) {
+            max_count = 138, min_count = 3;
+        } else if (curlen == nextlen) {
+            max_count = 6, min_count = 3;
+        } else {
+            max_count = 7, min_count = 4;
+        }
+    }
+}
+
+/* ===========================================================================
+ * Send a literal or distance tree in compressed form, using the codes in
+ * bl_tree.
+ */
+local void send_tree (s, tree, max_code)
+    deflate_state *s;
+    ct_data *tree; /* the tree to be scanned */
+    int max_code;       /* and its largest code of non zero frequency */
+{
+    int n;                     /* iterates over all tree elements */
+    int prevlen = -1;          /* last emitted length */
+    int curlen;                /* length of current code */
+    int nextlen = tree[0].Len; /* length of next code */
+    int count = 0;             /* repeat count of the current code */
+    int max_count = 7;         /* max repeat count */
+    int min_count = 4;         /* min repeat count */
+
+    /* tree[max_code+1].Len = -1; */  /* guard already set */
+    if (nextlen == 0) max_count = 138, min_count = 3;
+
+    for (n = 0; n <= max_code; n++) {
+        curlen = nextlen; nextlen = tree[n+1].Len;
+        if (++count < max_count && curlen == nextlen) {
+            continue;
+        } else if (count < min_count) {
+            do { send_code(s, curlen, s->bl_tree); } while (--count != 0);
+
+        } else if (curlen != 0) {
+            if (curlen != prevlen) {
+                send_code(s, curlen, s->bl_tree); count--;
+            }
+            Assert(count >= 3 && count <= 6, " 3_6?");
+            send_code(s, REP_3_6, s->bl_tree); send_bits(s, count-3, 2);
+
+        } else if (count <= 10) {
+            send_code(s, REPZ_3_10, s->bl_tree); send_bits(s, count-3, 3);
+
+        } else {
+            send_code(s, REPZ_11_138, s->bl_tree); send_bits(s, count-11, 7);
+        }
+        count = 0; prevlen = curlen;
+        if (nextlen == 0) {
+            max_count = 138, min_count = 3;
+        } else if (curlen == nextlen) {
+            max_count = 6, min_count = 3;
+        } else {
+            max_count = 7, min_count = 4;
+        }
+    }
+}
+
+/* ===========================================================================
+ * Construct the Huffman tree for the bit lengths and return the index in
+ * bl_order of the last bit length code to send.
+ */
+local int build_bl_tree(s)
+    deflate_state *s;
+{
+    int max_blindex;  /* index of last bit length code of non zero freq */
+
+    /* Determine the bit length frequencies for literal and distance trees */
+    scan_tree(s, (ct_data *)s->dyn_ltree, s->l_desc.max_code);
+    scan_tree(s, (ct_data *)s->dyn_dtree, s->d_desc.max_code);
+
+    /* Build the bit length tree: */
+    build_tree(s, (tree_desc *)(&(s->bl_desc)));
+    /* opt_len now includes the length of the tree representations, except
+     * the lengths of the bit lengths codes and the 5+5+4 bits for the counts.
+     */
+
+    /* Determine the number of bit length codes to send. The pkzip format
+     * requires that at least 4 bit length codes be sent. (appnote.txt says
+     * 3 but the actual value used is 4.)
+     */
+    for (max_blindex = BL_CODES-1; max_blindex >= 3; max_blindex--) {
+        if (s->bl_tree[bl_order[max_blindex]].Len != 0) break;
+    }
+    /* Update opt_len to include the bit length tree and counts */
+    s->opt_len += 3*(max_blindex+1) + 5+5+4;
+    Tracev((stderr, "\ndyn trees: dyn %ld, stat %ld",
+            s->opt_len, s->static_len));
+
+    return max_blindex;
+}
+
+/* ===========================================================================
+ * Send the header for a block using dynamic Huffman trees: the counts, the
+ * lengths of the bit length codes, the literal tree and the distance tree.
+ * IN assertion: lcodes >= 257, dcodes >= 1, blcodes >= 4.
+ */
+local void send_all_trees(s, lcodes, dcodes, blcodes)
+    deflate_state *s;
+    int lcodes, dcodes, blcodes; /* number of codes for each tree */
+{
+    int rank;                    /* index in bl_order */
+
+    Assert (lcodes >= 257 && dcodes >= 1 && blcodes >= 4, "not enough codes");
+    Assert (lcodes <= L_CODES && dcodes <= D_CODES && blcodes <= BL_CODES,
+            "too many codes");
+    Tracev((stderr, "\nbl counts: "));
+    send_bits(s, lcodes-257, 5); /* not +255 as stated in appnote.txt */
+    send_bits(s, dcodes-1,   5);
+    send_bits(s, blcodes-4,  4); /* not -3 as stated in appnote.txt */
+    for (rank = 0; rank < blcodes; rank++) {
+        Tracev((stderr, "\nbl code %2d ", bl_order[rank]));
+        send_bits(s, s->bl_tree[bl_order[rank]].Len, 3);
+    }
+    Tracev((stderr, "\nbl tree: sent %ld", s->bits_sent));
+
+    send_tree(s, (ct_data *)s->dyn_ltree, lcodes-1); /* literal tree */
+    Tracev((stderr, "\nlit tree: sent %ld", s->bits_sent));
+
+    send_tree(s, (ct_data *)s->dyn_dtree, dcodes-1); /* distance tree */
+    Tracev((stderr, "\ndist tree: sent %ld", s->bits_sent));
+}
+
+/* ===========================================================================
+ * Send a stored block
+ */
+void _tr_stored_block(s, buf, stored_len, eof)
+    deflate_state *s;
+    charf *buf;       /* input block */
+    ulg stored_len;   /* length of input block */
+    int eof;          /* true if this is the last block for a file */
+{
+    send_bits(s, (STORED_BLOCK<<1)+eof, 3);  /* send block type */
+#ifdef DEBUG
+    s->compressed_len = (s->compressed_len + 3 + 7) & (ulg)~7L;
+    s->compressed_len += (stored_len + 4) << 3;
+#endif
+    copy_block(s, buf, (unsigned)stored_len, 1); /* with header */
+}
+
+/* ===========================================================================
+ * Send one empty static block to give enough lookahead for inflate.
+ * This takes 10 bits, of which 7 may remain in the bit buffer.
+ * The current inflate code requires 9 bits of lookahead. If the
+ * last two codes for the previous block (real code plus EOB) were coded
+ * on 5 bits or less, inflate may have only 5+3 bits of lookahead to decode
+ * the last real code. In this case we send two empty static blocks instead
+ * of one. (There are no problems if the previous block is stored or fixed.)
+ * To simplify the code, we assume the worst case of last real code encoded
+ * on one bit only.
+ */
+void _tr_align(s)
+    deflate_state *s;
+{
+    send_bits(s, STATIC_TREES<<1, 3);
+    send_code(s, END_BLOCK, static_ltree);
+#ifdef DEBUG
+    s->compressed_len += 10L; /* 3 for block type, 7 for EOB */
+#endif
+    bi_flush(s);
+    /* Of the 10 bits for the empty block, we have already sent
+     * (10 - bi_valid) bits. The lookahead for the last real code (before
+     * the EOB of the previous block) was thus at least one plus the length
+     * of the EOB plus what we have just sent of the empty static block.
+     */
+    if (1 + s->last_eob_len + 10 - s->bi_valid < 9) {
+        send_bits(s, STATIC_TREES<<1, 3);
+        send_code(s, END_BLOCK, static_ltree);
+#ifdef DEBUG
+        s->compressed_len += 10L;
+#endif
+        bi_flush(s);
+    }
+    s->last_eob_len = 7;
+}
+
+/* ===========================================================================
+ * Determine the best encoding for the current block: dynamic trees, static
+ * trees or store, and output the encoded block to the zip file.
+ */
+void _tr_flush_block(s, buf, stored_len, eof)
+    deflate_state *s;
+    charf *buf;       /* input block, or NULL if too old */
+    ulg stored_len;   /* length of input block */
+    int eof;          /* true if this is the last block for a file */
+{
+    ulg opt_lenb, static_lenb; /* opt_len and static_len in bytes */
+    int max_blindex = 0;  /* index of last bit length code of non zero freq */
+
+    /* Build the Huffman trees unless a stored block is forced */
+    if (s->level > 0) {
+
+        /* Check if the file is ascii or binary */
+       if (s->data_type == Z_UNKNOWN) set_data_type(s);
+
+       /* Construct the literal and distance trees */
+       build_tree(s, (tree_desc *)(&(s->l_desc)));
+       Tracev((stderr, "\nlit data: dyn %ld, stat %ld", s->opt_len,
+               s->static_len));
+
+       build_tree(s, (tree_desc *)(&(s->d_desc)));
+       Tracev((stderr, "\ndist data: dyn %ld, stat %ld", s->opt_len,
+               s->static_len));
+       /* At this point, opt_len and static_len are the total bit lengths of
+        * the compressed block data, excluding the tree representations.
+        */
+
+       /* Build the bit length tree for the above two trees, and get the index
+        * in bl_order of the last bit length code to send.
+        */
+       max_blindex = build_bl_tree(s);
+
+       /* Determine the best encoding. Compute first the block length in bytes*/
+       opt_lenb = (s->opt_len+3+7)>>3;
+       static_lenb = (s->static_len+3+7)>>3;
+
+       Tracev((stderr, "\nopt %lu(%lu) stat %lu(%lu) stored %lu lit %u ",
+               opt_lenb, s->opt_len, static_lenb, s->static_len, stored_len,
+               s->last_lit));
+
+       if (static_lenb <= opt_lenb) opt_lenb = static_lenb;
+
+    } else {
+        Assert(buf != (char*)0, "lost buf");
+       opt_lenb = static_lenb = stored_len + 5; /* force a stored block */
+    }
+
+#ifdef FORCE_STORED
+    if (buf != (char*)0) { /* force stored block */
+#else
+    if (stored_len+4 <= opt_lenb && buf != (char*)0) {
+                       /* 4: two words for the lengths */
+#endif
+        /* The test buf != NULL is only necessary if LIT_BUFSIZE > WSIZE.
+         * Otherwise we can't have processed more than WSIZE input bytes since
+         * the last block flush, because compression would have been
+         * successful. If LIT_BUFSIZE <= WSIZE, it is never too late to
+         * transform a block into a stored block.
+         */
+        _tr_stored_block(s, buf, stored_len, eof);
+
+#ifdef FORCE_STATIC
+    } else if (static_lenb >= 0) { /* force static trees */
+#else
+    } else if (static_lenb == opt_lenb) {
+#endif
+        send_bits(s, (STATIC_TREES<<1)+eof, 3);
+        compress_block(s, static_ltree, static_dtree);
+#ifdef DEBUG
+        s->compressed_len += 3 + s->static_len;
+#endif
+    } else {
+        send_bits(s, (DYN_TREES<<1)+eof, 3);
+        send_all_trees(s, s->l_desc.max_code+1, s->d_desc.max_code+1,
+                       max_blindex+1);
+        compress_block(s, s->dyn_ltree, s->dyn_dtree);
+#ifdef DEBUG
+        s->compressed_len += 3 + s->opt_len;
+#endif
+    }
+    Assert (s->compressed_len == s->bits_sent, "bad compressed size");
+    /* The above check is made mod 2^32, for files larger than 512 MB
+     * and uLong implemented on 32 bits.
+     */
+    init_block(s);
+
+    if (eof) {
+        bi_windup(s);
+#ifdef DEBUG
+        s->compressed_len += 7;  /* align on byte boundary */
+#endif
+    }
+    Tracev((stderr,"\ncomprlen %lu(%lu) ", s->compressed_len>>3,
+           s->compressed_len-7*eof));
+}
+
+/* ===========================================================================
+ * Save the match info and tally the frequency counts. Return true if
+ * the current block must be flushed.
+ */
+int _tr_tally (s, dist, lc)
+    deflate_state *s;
+    unsigned dist;  /* distance of matched string */
+    unsigned lc;    /* match length-MIN_MATCH or unmatched char (if dist==0) */
+{
+    s->d_buf[s->last_lit] = (ush)dist;
+    s->l_buf[s->last_lit++] = (uch)lc;
+    if (dist == 0) {
+        /* lc is the unmatched char */
+        s->dyn_ltree[lc].Freq++;
+    } else {
+        s->matches++;
+        /* Here, lc is the match length - MIN_MATCH */
+        dist--;             /* dist = match distance - 1 */
+        Assert((ush)dist < (ush)MAX_DIST(s) &&
+               (ush)lc <= (ush)(MAX_MATCH-MIN_MATCH) &&
+               (ush)d_code(dist) < (ush)D_CODES,  "_tr_tally: bad match");
+
+        s->dyn_ltree[_length_code[lc]+LITERALS+1].Freq++;
+        s->dyn_dtree[d_code(dist)].Freq++;
+    }
+
+#ifdef TRUNCATE_BLOCK
+    /* Try to guess if it is profitable to stop the current block here */
+    if ((s->last_lit & 0x1fff) == 0 && s->level > 2) {
+        /* Compute an upper bound for the compressed length */
+        ulg out_length = (ulg)s->last_lit*8L;
+        ulg in_length = (ulg)((long)s->strstart - s->block_start);
+        int dcode;
+        for (dcode = 0; dcode < D_CODES; dcode++) {
+            out_length += (ulg)s->dyn_dtree[dcode].Freq *
+                (5L+extra_dbits[dcode]);
+        }
+        out_length >>= 3;
+        Tracev((stderr,"\nlast_lit %u, in %ld, out ~%ld(%ld%%) ",
+               s->last_lit, in_length, out_length,
+               100L - out_length*100L/in_length));
+        if (s->matches < s->last_lit/2 && out_length < in_length/2) return 1;
+    }
+#endif
+    return (s->last_lit == s->lit_bufsize-1);
+    /* We avoid equality with lit_bufsize because of wraparound at 64K
+     * on 16 bit machines and because stored blocks are restricted to
+     * 64K-1 bytes.
+     */
+}
+
+/* ===========================================================================
+ * Send the block data compressed using the given Huffman trees
+ */
+local void compress_block(s, ltree, dtree)
+    deflate_state *s;
+    const ct_data *ltree; /* literal tree */
+    const ct_data *dtree; /* distance tree */
+{
+    unsigned dist;      /* distance of matched string */
+    int lc;             /* match length or unmatched char (if dist == 0) */
+    unsigned lx = 0;    /* running index in l_buf */
+    unsigned code;      /* the code to send */
+    int extra;          /* number of extra bits to send */
+
+    if (s->last_lit != 0) do {
+        dist = s->d_buf[lx];
+        lc = s->l_buf[lx++];
+        if (dist == 0) {
+            send_code(s, lc, ltree); /* send a literal byte */
+            Tracecv(isgraph(lc), (stderr," '%c' ", lc));
+        } else {
+            /* Here, lc is the match length - MIN_MATCH */
+            code = _length_code[lc];
+            send_code(s, code+LITERALS+1, ltree); /* send the length code */
+            extra = extra_lbits[code];
+            if (extra != 0) {
+                lc -= base_length[code];
+                send_bits(s, lc, extra);       /* send the extra length bits */
+            }
+            dist--; /* dist is now the match distance - 1 */
+            code = d_code(dist);
+            Assert (code < D_CODES, "bad d_code");
+
+            send_code(s, code, dtree);       /* send the distance code */
+            extra = extra_dbits[code];
+            if (extra != 0) {
+                dist -= base_dist[code];
+                send_bits(s, dist, extra);   /* send the extra distance bits */
+            }
+        } /* literal or match pair ? */
+
+        /* Check that the overlay between pending_buf and d_buf+l_buf is ok: */
+        Assert(s->pending < s->lit_bufsize + 2*lx, "pendingBuf overflow");
+
+    } while (lx < s->last_lit);
+
+    send_code(s, END_BLOCK, ltree);
+    s->last_eob_len = ltree[END_BLOCK].Len;
+}
+
+/* ===========================================================================
+ * Set the data type to ASCII or BINARY, using a crude approximation:
+ * binary if more than 20% of the bytes are <= 6 or >= 128, ascii otherwise.
+ * IN assertion: the fields freq of dyn_ltree are set and the total of all
+ * frequencies does not exceed 64K (to fit in an int on 16 bit machines).
+ */
+local void set_data_type(s)
+    deflate_state *s;
+{
+    int n = 0;
+    unsigned ascii_freq = 0;
+    unsigned bin_freq = 0;
+    while (n < 7)        bin_freq += s->dyn_ltree[n++].Freq;
+    while (n < 128)    ascii_freq += s->dyn_ltree[n++].Freq;
+    while (n < LITERALS) bin_freq += s->dyn_ltree[n++].Freq;
+    s->data_type = (Byte)(bin_freq > (ascii_freq >> 2) ? Z_BINARY : Z_ASCII);
+}
+
+/* ===========================================================================
+ * Reverse the first len bits of a code, using straightforward code (a faster
+ * method would use a table)
+ * IN assertion: 1 <= len <= 15
+ */
+local unsigned bi_reverse(code, len)
+    unsigned code; /* the value to invert */
+    int len;       /* its bit length */
+{
+    register unsigned res = 0;
+    do {
+        res |= code & 1;
+        code >>= 1, res <<= 1;
+    } while (--len > 0);
+    return res >> 1;
+}
+
+/* ===========================================================================
+ * Flush the bit buffer, keeping at most 7 bits in it.
+ */
+local void bi_flush(s)
+    deflate_state *s;
+{
+    if (s->bi_valid == 16) {
+        put_short(s, s->bi_buf);
+        s->bi_buf = 0;
+        s->bi_valid = 0;
+    } else if (s->bi_valid >= 8) {
+        put_byte(s, (Byte)s->bi_buf);
+        s->bi_buf >>= 8;
+        s->bi_valid -= 8;
+    }
+}
+
+/* ===========================================================================
+ * Flush the bit buffer and align the output on a byte boundary
+ */
+local void bi_windup(s)
+    deflate_state *s;
+{
+    if (s->bi_valid > 8) {
+        put_short(s, s->bi_buf);
+    } else if (s->bi_valid > 0) {
+        put_byte(s, (Byte)s->bi_buf);
+    }
+    s->bi_buf = 0;
+    s->bi_valid = 0;
+#ifdef DEBUG
+    s->bits_sent = (s->bits_sent+7) & ~7;
+#endif
+}
+
+/* ===========================================================================
+ * Copy a stored block, storing first the length and its
+ * one's complement if requested.
+ */
+local void copy_block(s, buf, len, header)
+    deflate_state *s;
+    charf    *buf;    /* the input data */
+    unsigned len;     /* its length */
+    int      header;  /* true if block header must be written */
+{
+    bi_windup(s);        /* align on byte boundary */
+    s->last_eob_len = 8; /* enough lookahead for inflate */
+
+    if (header) {
+        put_short(s, (ush)len);   
+        put_short(s, (ush)~len);
+#ifdef DEBUG
+        s->bits_sent += 2*16;
+#endif
+    }
+#ifdef DEBUG
+    s->bits_sent += (ulg)len<<3;
+#endif
+    while (len--) {
+        put_byte(s, *buf++);
+    }
+}
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/trees.h     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,128 @@
+/* header created automatically with -DGEN_TREES_H */
+
+local const ct_data static_ltree[L_CODES+2] = {
+{{ 12},{  8}}, {{140},{  8}}, {{ 76},{  8}}, {{204},{  8}}, {{ 44},{  8}},
+{{172},{  8}}, {{108},{  8}}, {{236},{  8}}, {{ 28},{  8}}, {{156},{  8}},
+{{ 92},{  8}}, {{220},{  8}}, {{ 60},{  8}}, {{188},{  8}}, {{124},{  8}},
+{{252},{  8}}, {{  2},{  8}}, {{130},{  8}}, {{ 66},{  8}}, {{194},{  8}},
+{{ 34},{  8}}, {{162},{  8}}, {{ 98},{  8}}, {{226},{  8}}, {{ 18},{  8}},
+{{146},{  8}}, {{ 82},{  8}}, {{210},{  8}}, {{ 50},{  8}}, {{178},{  8}},
+{{114},{  8}}, {{242},{  8}}, {{ 10},{  8}}, {{138},{  8}}, {{ 74},{  8}},
+{{202},{  8}}, {{ 42},{  8}}, {{170},{  8}}, {{106},{  8}}, {{234},{  8}},
+{{ 26},{  8}}, {{154},{  8}}, {{ 90},{  8}}, {{218},{  8}}, {{ 58},{  8}},
+{{186},{  8}}, {{122},{  8}}, {{250},{  8}}, {{  6},{  8}}, {{134},{  8}},
+{{ 70},{  8}}, {{198},{  8}}, {{ 38},{  8}}, {{166},{  8}}, {{102},{  8}},
+{{230},{  8}}, {{ 22},{  8}}, {{150},{  8}}, {{ 86},{  8}}, {{214},{  8}},
+{{ 54},{  8}}, {{182},{  8}}, {{118},{  8}}, {{246},{  8}}, {{ 14},{  8}},
+{{142},{  8}}, {{ 78},{  8}}, {{206},{  8}}, {{ 46},{  8}}, {{174},{  8}},
+{{110},{  8}}, {{238},{  8}}, {{ 30},{  8}}, {{158},{  8}}, {{ 94},{  8}},
+{{222},{  8}}, {{ 62},{  8}}, {{190},{  8}}, {{126},{  8}}, {{254},{  8}},
+{{  1},{  8}}, {{129},{  8}}, {{ 65},{  8}}, {{193},{  8}}, {{ 33},{  8}},
+{{161},{  8}}, {{ 97},{  8}}, {{225},{  8}}, {{ 17},{  8}}, {{145},{  8}},
+{{ 81},{  8}}, {{209},{  8}}, {{ 49},{  8}}, {{177},{  8}}, {{113},{  8}},
+{{241},{  8}}, {{  9},{  8}}, {{137},{  8}}, {{ 73},{  8}}, {{201},{  8}},
+{{ 41},{  8}}, {{169},{  8}}, {{105},{  8}}, {{233},{  8}}, {{ 25},{  8}},
+{{153},{  8}}, {{ 89},{  8}}, {{217},{  8}}, {{ 57},{  8}}, {{185},{  8}},
+{{121},{  8}}, {{249},{  8}}, {{  5},{  8}}, {{133},{  8}}, {{ 69},{  8}},
+{{197},{  8}}, {{ 37},{  8}}, {{165},{  8}}, {{101},{  8}}, {{229},{  8}},
+{{ 21},{  8}}, {{149},{  8}}, {{ 85},{  8}}, {{213},{  8}}, {{ 53},{  8}},
+{{181},{  8}}, {{117},{  8}}, {{245},{  8}}, {{ 13},{  8}}, {{141},{  8}},
+{{ 77},{  8}}, {{205},{  8}}, {{ 45},{  8}}, {{173},{  8}}, {{109},{  8}},
+{{237},{  8}}, {{ 29},{  8}}, {{157},{  8}}, {{ 93},{  8}}, {{221},{  8}},
+{{ 61},{  8}}, {{189},{  8}}, {{125},{  8}}, {{253},{  8}}, {{ 19},{  9}},
+{{275},{  9}}, {{147},{  9}}, {{403},{  9}}, {{ 83},{  9}}, {{339},{  9}},
+{{211},{  9}}, {{467},{  9}}, {{ 51},{  9}}, {{307},{  9}}, {{179},{  9}},
+{{435},{  9}}, {{115},{  9}}, {{371},{  9}}, {{243},{  9}}, {{499},{  9}},
+{{ 11},{  9}}, {{267},{  9}}, {{139},{  9}}, {{395},{  9}}, {{ 75},{  9}},
+{{331},{  9}}, {{203},{  9}}, {{459},{  9}}, {{ 43},{  9}}, {{299},{  9}},
+{{171},{  9}}, {{427},{  9}}, {{107},{  9}}, {{363},{  9}}, {{235},{  9}},
+{{491},{  9}}, {{ 27},{  9}}, {{283},{  9}}, {{155},{  9}}, {{411},{  9}},
+{{ 91},{  9}}, {{347},{  9}}, {{219},{  9}}, {{475},{  9}}, {{ 59},{  9}},
+{{315},{  9}}, {{187},{  9}}, {{443},{  9}}, {{123},{  9}}, {{379},{  9}},
+{{251},{  9}}, {{507},{  9}}, {{  7},{  9}}, {{263},{  9}}, {{135},{  9}},
+{{391},{  9}}, {{ 71},{  9}}, {{327},{  9}}, {{199},{  9}}, {{455},{  9}},
+{{ 39},{  9}}, {{295},{  9}}, {{167},{  9}}, {{423},{  9}}, {{103},{  9}},
+{{359},{  9}}, {{231},{  9}}, {{487},{  9}}, {{ 23},{  9}}, {{279},{  9}},
+{{151},{  9}}, {{407},{  9}}, {{ 87},{  9}}, {{343},{  9}}, {{215},{  9}},
+{{471},{  9}}, {{ 55},{  9}}, {{311},{  9}}, {{183},{  9}}, {{439},{  9}},
+{{119},{  9}}, {{375},{  9}}, {{247},{  9}}, {{503},{  9}}, {{ 15},{  9}},
+{{271},{  9}}, {{143},{  9}}, {{399},{  9}}, {{ 79},{  9}}, {{335},{  9}},
+{{207},{  9}}, {{463},{  9}}, {{ 47},{  9}}, {{303},{  9}}, {{175},{  9}},
+{{431},{  9}}, {{111},{  9}}, {{367},{  9}}, {{239},{  9}}, {{495},{  9}},
+{{ 31},{  9}}, {{287},{  9}}, {{159},{  9}}, {{415},{  9}}, {{ 95},{  9}},
+{{351},{  9}}, {{223},{  9}}, {{479},{  9}}, {{ 63},{  9}}, {{319},{  9}},
+{{191},{  9}}, {{447},{  9}}, {{127},{  9}}, {{383},{  9}}, {{255},{  9}},
+{{511},{  9}}, {{  0},{  7}}, {{ 64},{  7}}, {{ 32},{  7}}, {{ 96},{  7}},
+{{ 16},{  7}}, {{ 80},{  7}}, {{ 48},{  7}}, {{112},{  7}}, {{  8},{  7}},
+{{ 72},{  7}}, {{ 40},{  7}}, {{104},{  7}}, {{ 24},{  7}}, {{ 88},{  7}},
+{{ 56},{  7}}, {{120},{  7}}, {{  4},{  7}}, {{ 68},{  7}}, {{ 36},{  7}},
+{{100},{  7}}, {{ 20},{  7}}, {{ 84},{  7}}, {{ 52},{  7}}, {{116},{  7}},
+{{  3},{  8}}, {{131},{  8}}, {{ 67},{  8}}, {{195},{  8}}, {{ 35},{  8}},
+{{163},{  8}}, {{ 99},{  8}}, {{227},{  8}}
+};
+
+local const ct_data static_dtree[D_CODES] = {
+{{ 0},{ 5}}, {{16},{ 5}}, {{ 8},{ 5}}, {{24},{ 5}}, {{ 4},{ 5}},
+{{20},{ 5}}, {{12},{ 5}}, {{28},{ 5}}, {{ 2},{ 5}}, {{18},{ 5}},
+{{10},{ 5}}, {{26},{ 5}}, {{ 6},{ 5}}, {{22},{ 5}}, {{14},{ 5}},
+{{30},{ 5}}, {{ 1},{ 5}}, {{17},{ 5}}, {{ 9},{ 5}}, {{25},{ 5}},
+{{ 5},{ 5}}, {{21},{ 5}}, {{13},{ 5}}, {{29},{ 5}}, {{ 3},{ 5}},
+{{19},{ 5}}, {{11},{ 5}}, {{27},{ 5}}, {{ 7},{ 5}}, {{23},{ 5}}
+};
+
+const uch _dist_code[DIST_CODE_LEN] = {
+ 0,  1,  2,  3,  4,  4,  5,  5,  6,  6,  6,  6,  7,  7,  7,  7,  8,  8,  8,  8,
+ 8,  8,  8,  8,  9,  9,  9,  9,  9,  9,  9,  9, 10, 10, 10, 10, 10, 10, 10, 10,
+10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,
+11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12,
+12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13,
+13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13,
+13, 13, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
+14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
+14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
+14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 15, 15,
+15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
+15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
+15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,  0,  0, 16, 17,
+18, 18, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 22, 22, 22, 22, 22, 22, 22, 22,
+23, 23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
+24, 24, 24, 24, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25,
+26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26,
+26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 27, 27, 27, 27, 27, 27, 27, 27,
+27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27,
+27, 27, 27, 27, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,
+28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,
+28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,
+28, 28, 28, 28, 28, 28, 28, 28, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
+29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
+29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
+29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29
+};
+
+const uch _length_code[MAX_MATCH-MIN_MATCH+1]= {
+ 0,  1,  2,  3,  4,  5,  6,  7,  8,  8,  9,  9, 10, 10, 11, 11, 12, 12, 12, 12,
+13, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16, 16, 16,
+17, 17, 17, 17, 17, 17, 17, 17, 18, 18, 18, 18, 18, 18, 18, 18, 19, 19, 19, 19,
+19, 19, 19, 19, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
+21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 22, 22, 22, 22,
+22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 23, 23, 23, 23, 23, 23, 23, 23,
+23, 23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
+24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
+25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25,
+25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 26, 26, 26, 26, 26, 26, 26, 26,
+26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26,
+26, 26, 26, 26, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27,
+27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 28
+};
+
+local const int base_length[LENGTH_CODES] = {
+0, 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 16, 20, 24, 28, 32, 40, 48, 56,
+64, 80, 96, 112, 128, 160, 192, 224, 0
+};
+
+local const int base_dist[D_CODES] = {
+    0,     1,     2,     3,     4,     6,     8,    12,    16,    24,
+   32,    48,    64,    96,   128,   192,   256,   384,   512,   768,
+ 1024,  1536,  2048,  3072,  4096,  6144,  8192, 12288, 16384, 24576
+};
+
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/ultoa.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,66 @@
+/*
+ * convert unsigned long to ASCII
+ * Copyright (C) 1998, 1999  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id: ultoa.c,v 1.10 2004-07-10 07:48:37 mcr Exp $
+ */
+#include "openswan.h"
+
+/*
+ - ultoa - convert unsigned long to decimal ASCII
+ */
+size_t                         /* length required for full conversion */
+ultoa(n, base, dst, dstlen)
+unsigned long n;
+int base;
+char *dst;                     /* need not be valid if dstlen is 0 */
+size_t dstlen;
+{
+       char buf[3*sizeof(unsigned long) + 1];
+       char *bufend = buf + sizeof(buf);
+       size_t len;
+       char *p;
+       static char hex[] = "0123456789abcdef";
+
+       p = bufend;
+       *--p = '\0';
+       if (base == 10) {
+               do {
+                       *--p = n%10 + '0';
+                       n /= 10;
+               } while (n != 0);
+       } else if (base == 16) {
+               do {
+                       *--p = hex[n&0xf];
+                       n >>= 4;
+               } while (n != 0);
+               *--p = 'x';
+               *--p = '0';
+       } else if (base == 8) {
+               do {
+                       *--p = (n&07) + '0';
+                       n >>= 3;
+               } while (n != 0);
+               *--p = '0';
+       } else
+               *--p = '?';
+
+       len = bufend - p;
+
+       if (dstlen > 0) {
+               if (len > dstlen)
+                       *(p + dstlen - 1) = '\0';
+               strcpy(dst, p);
+       }
+       return len;
+}
--- /dev/null   Tue Mar 11 13:02:56 2003
+++ linux/net/ipsec/ultot.c     Mon Feb  9 13:51:03 2004
@@ -0,0 +1,82 @@
+/*
+ * convert unsigned long to text
+ * Copyright (C) 2000  Henry Spencer.
+ * 
+ * This library is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/lgpl.txt>.
+ * 
+ * This library is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Library General Public
+ * License for more details.
+ *
+ * RCSID $Id: ultot.c,v 1.5 2004-07-10 07:48:37 mcr Exp $
+ */
+#include "openswan.h"
+
+/*
+ - ultot - convert unsigned long to text
+ */
+size_t                         /* length required for full conversion */
+ultot(n, base, dst, dstlen)
+unsigned long n;
+int base;
+char *dst;                     /* need not be valid if dstlen is 0 */
+size_t dstlen;
+{
+       char buf[3*sizeof(unsigned long) + 1];
+       char *bufend = buf + sizeof(buf);
+       size_t len;
+       char *p;
+       static char hex[] = "0123456789abcdef";
+#      define  HEX32   (32/4)
+
+       p = bufend;
+       *--p = '\0';
+       switch (base) {
+       case 10:
+       case 'd':
+               do {
+                       *--p = n%10 + '0';
+                       n /= 10;
+               } while (n != 0);
+               break;
+       case 16:
+       case 17:
+       case 'x':
+               do {
+                       *--p = hex[n&0xf];
+                       n >>= 4;
+               } while (n != 0);
+               if (base == 17)
+                       while (bufend - p < HEX32 + 1)
+                               *--p = '0';
+               if (base == 'x') {
+                       *--p = 'x';
+                       *--p = '0';
+               }
+               break;
+       case 8:
+       case 'o':
+               do {
+                       *--p = (n&07) + '0';
+                       n >>= 3;
+               } while (n != 0);
+               if (base == 'o')
+                       *--p = '0';
+               break;
+       default:
+               return 0;
+               break;
+       }
+
+       len = bufend - p;
+       if (dstlen > 0) {
+               if (len > dstlen)
+                       *(p + dstlen - 1) = '\0';
+               strcpy(dst, p);
+       }
+       return len;
+}
--- /dev/null   Fri May 10 13:59:54 2002
+++ linux/net/ipsec/Makefile.ver  Sun Jul 28 22:10:40 2002
@@ -0,0 +1 @@
+IPSECVERSION=2.4.12