net/nfs.h

   1 /*
   2  * (C) Masami Komiya <mkomiya@sonare.it> 2004
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License as
   6  * published by the Free Software Foundation; either version 2, or (at
   7  * your option) any later version.
   8  */
   9
  10 #ifndef __NFS_H__
  11 #define __NFS_H__
  12
  13 #define SUNRPC_PORT     111
  14
  15 #define PROG_PORTMAP    100000
  16 #define PROG_NFS        100003
  17 #define PROG_MOUNT      100005
  18
  19 #define MSG_CALL        0
  20 #define MSG_REPLY       1
  21
  22 #define PORTMAP_GETPORT 3
  23
  24 #define MOUNT_ADDENTRY  1
  25 #define MOUNT_UMOUNTALL 4
  26
  27 #define NFS_LOOKUP      4
  28 #define NFS_READLINK    5
  29 #define NFS_READ        6
  30
  31 #define NFS_FHSIZE      32
  32
  33 #define NFSERR_PERM     1
  34 #define NFSERR_NOENT    2
  35 #define NFSERR_ACCES    13
  36 #define NFSERR_ISDIR    21
  37 #define NFSERR_INVAL    22
  38
  39 /* Block size used for NFS read accesses.  A RPC reply packet (including  all
  40  * headers) must fit within a single Ethernet frame to avoid fragmentation.
  41  * However, if CONFIG_IP_DEFRAG is set, the config file may want to use a
  42  * bigger value. In any case, most NFS servers are optimized for a power of 2.
  43  */
  44 #ifdef CONFIG_NFS_READ_SIZE
  45 #define NFS_READ_SIZE CONFIG_NFS_READ_SIZE
  46 #else
  47 #define NFS_READ_SIZE 1024 /* biggest power of two that fits Ether frame */
  48 #endif
  49
  50 #define NFS_MAXLINKDEPTH 16
  51
  52 struct rpc_t {
  53         union {
  54                 uint8_t data[2048];
  55                 struct {
  56                         uint32_t id;
  57                         uint32_t type;
  58                         uint32_t rpcvers;
  59                         uint32_t prog;
  60                         uint32_t vers;
  61                         uint32_t proc;
  62                         uint32_t data[1];
  63                 } call;
  64                 struct {
  65                         uint32_t id;
  66                         uint32_t type;
  67                         uint32_t rstatus;
  68                         uint32_t verifier;
  69                         uint32_t v2;
  70                         uint32_t astatus;
  71                         uint32_t data[19];
  72                 } reply;
  73         } u;
  74 };
  75 extern void NfsStart(void);     /* Begin NFS */
  76
  77
  78 /**********************************************************************/
  79
  80 #endif /* __NFS_H__ */