engines/e_afalg.h

   1 /*
   2  * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #ifndef HEADER_AFALG_H
  11 # define HEADER_AFALG_H
  12
  13 # if defined(__GNUC__) && __GNUC__ >= 4 && \
  14      (!defined(__STDC_VERSION__) || __STDC_VERSION__ < 199901L)
  15 #  pragma GCC diagnostic ignored "-Wvariadic-macros"
  16 # endif
  17
  18 # ifdef ALG_DEBUG
  19 #  define ALG_DGB(x, ...) fprintf(stderr, "ALG_DBG: " x, __VA_ARGS__)
  20 #  define ALG_INFO(x, ...) fprintf(stderr, "ALG_INFO: " x, __VA_ARGS__)
  21 #  define ALG_WARN(x, ...) fprintf(stderr, "ALG_WARN: " x, __VA_ARGS__)
  22 # else
  23 #  define ALG_DGB(x, ...)
  24 #  define ALG_INFO(x, ...)
  25 #  define ALG_WARN(x, ...)
  26 # endif
  27
  28 # define ALG_ERR(x, ...) fprintf(stderr, "ALG_ERR: " x, __VA_ARGS__)
  29 # define ALG_PERR(x, ...) \
  30                 do { \
  31                     fprintf(stderr, "ALG_PERR: " x, __VA_ARGS__); \
  32                     perror(NULL); \
  33                 } while(0)
  34 # define ALG_PWARN(x, ...) \
  35                 do { \
  36                     fprintf(stderr, "ALG_PERR: " x, __VA_ARGS__); \
  37                     perror(NULL); \
  38                 } while(0)
  39
  40 # ifndef AES_BLOCK_SIZE
  41 #  define AES_BLOCK_SIZE   16
  42 # endif
  43 # define AES_KEY_SIZE_128 16
  44 # define AES_KEY_SIZE_192 24
  45 # define AES_KEY_SIZE_256 32
  46 # define AES_IV_LEN       16
  47
  48 # define MAX_INFLIGHTS 1
  49
  50 typedef enum {
  51     MODE_UNINIT = 0,
  52     MODE_SYNC,
  53     MODE_ASYNC
  54 } op_mode;
  55
  56 enum {
  57     AES_CBC_128 = 0,
  58     AES_CBC_192,
  59     AES_CBC_256
  60 };
  61
  62 struct cbc_cipher_handles {
  63     int key_size;
  64     EVP_CIPHER *_hidden;
  65 };
  66
  67 typedef struct cbc_cipher_handles cbc_handles;
  68
  69 struct afalg_aio_st {
  70     int efd;
  71     op_mode mode;
  72     aio_context_t aio_ctx;
  73     struct io_event events[MAX_INFLIGHTS];
  74     struct iocb cbt[MAX_INFLIGHTS];
  75 };
  76 typedef struct afalg_aio_st afalg_aio;
  77
  78 /*
  79  * MAGIC Number to identify correct initialisation
  80  * of afalg_ctx.
  81  */
  82 # define MAGIC_INIT_NUM 0x1890671
  83
  84 struct afalg_ctx_st {
  85     int init_done;
  86     int sfd;
  87     int bfd;
  88 # ifdef ALG_ZERO_COPY
  89     int zc_pipe[2];
  90 # endif
  91     afalg_aio aio;
  92 };
  93
  94 typedef struct afalg_ctx_st afalg_ctx;
  95 #endif