LXR uboot/net/nfs.h

   1/* SPDX-License-Identifier: GPL-2.0+ */
   2/*
   3 * (C) Masami Komiya <mkomiya@sonare.it> 2004
   4 */
   5
   6#ifndef __NFS_H__
   7#define __NFS_H__
   8
   9#define SUNRPC_PORT     111
  10
  11#define PROG_PORTMAP    100000
  12#define PROG_NFS        100003
  13#define PROG_MOUNT      100005
  14
  15#define MSG_CALL        0
  16#define MSG_REPLY       1
  17
  18#define PORTMAP_GETPORT 3
  19
  20#define MOUNT_ADDENTRY  1
  21#define MOUNT_UMOUNTALL 4
  22
  23#define NFS_LOOKUP      4
  24#define NFS_READLINK    5
  25#define NFS_READ        6
  26
  27#define NFS3PROC_LOOKUP 3
  28
  29#define NFS_FHSIZE      32
  30#define NFS3_FHSIZE     64
  31
  32#define NFSERR_PERM     1
  33#define NFSERR_NOENT    2
  34#define NFSERR_ACCES    13
  35#define NFSERR_ISDIR    21
  36#define NFSERR_INVAL    22
  37
  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, a bigger value could be used.  In any
  42 * case, most NFS servers are optimized for a power of 2.
  43 */
  44#define NFS_READ_SIZE   1024    /* biggest power of two that fits Ether frame */
  45#define NFS_MAX_ATTRS   26
  46
  47/* Values for Accept State flag on RPC answers (See: rfc1831) */
  48enum rpc_accept_stat {
  49        NFS_RPC_SUCCESS = 0,    /* RPC executed successfully */
  50        NFS_RPC_PROG_UNAVAIL = 1,       /* remote hasn't exported program */
  51        NFS_RPC_PROG_MISMATCH = 2,      /* remote can't support version # */
  52        NFS_RPC_PROC_UNAVAIL = 3,       /* program can't support procedure */
  53        NFS_RPC_GARBAGE_ARGS = 4,       /* procedure can't decode params */
  54        NFS_RPC_SYSTEM_ERR = 5  /* errors like memory allocation failure */
  55};
  56
  57struct rpc_t {
  58        union {
  59                uint8_t data[NFS_READ_SIZE + (6 + NFS_MAX_ATTRS) *
  60                        sizeof(uint32_t)];
  61                struct {
  62                        uint32_t id;
  63                        uint32_t type;
  64                        uint32_t rpcvers;
  65                        uint32_t prog;
  66                        uint32_t vers;
  67                        uint32_t proc;
  68                        uint32_t data[1];
  69                } call;
  70                struct {
  71                        uint32_t id;
  72                        uint32_t type;
  73                        uint32_t rstatus;
  74                        uint32_t verifier;
  75                        uint32_t v2;
  76                        uint32_t astatus;
  77                        uint32_t data[NFS_READ_SIZE / sizeof(uint32_t) +
  78                                NFS_MAX_ATTRS];
  79                } reply;
  80        } u;
  81};
  82void nfs_start(void);   /* Begin NFS */
  83
  84
  85/**********************************************************************/
  86
  87#endif /* __NFS_H__ */
  88