0b1e580672
In the general case, CONFIG_NFS_READ_SIZE is unchanged from the default of 1024. There are in fact no in-tree users that increase this size. Adjust the comment to reflect what could be done in the future in conjunction with CONFIG_IP_DEFRAG. Cc: Joe Hershberger <joe.hershberger@ni.com> Signed-off-by: Tom Rini <trini@konsulko.com> Acked-by: Joe Hershberger <joe.hershberger@ni.com>
86 lines
2.0 KiB
C
86 lines
2.0 KiB
C
/*
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* (C) Masami Komiya <mkomiya@sonare.it> 2004
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*
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* SPDX-License-Identifier: GPL-2.0+
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*/
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#ifndef __NFS_H__
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#define __NFS_H__
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#define SUNRPC_PORT 111
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#define PROG_PORTMAP 100000
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#define PROG_NFS 100003
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#define PROG_MOUNT 100005
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#define MSG_CALL 0
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#define MSG_REPLY 1
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#define PORTMAP_GETPORT 3
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#define MOUNT_ADDENTRY 1
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#define MOUNT_UMOUNTALL 4
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#define NFS_LOOKUP 4
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#define NFS_READLINK 5
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#define NFS_READ 6
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#define NFS3PROC_LOOKUP 3
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#define NFS_FHSIZE 32
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#define NFS3_FHSIZE 64
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#define NFSERR_PERM 1
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#define NFSERR_NOENT 2
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#define NFSERR_ACCES 13
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#define NFSERR_ISDIR 21
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#define NFSERR_INVAL 22
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/*
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* Block size used for NFS read accesses. A RPC reply packet (including all
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* headers) must fit within a single Ethernet frame to avoid fragmentation.
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* However, if CONFIG_IP_DEFRAG is set, a bigger value could be used. In any
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* case, most NFS servers are optimized for a power of 2.
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*/
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#define NFS_READ_SIZE 1024 /* biggest power of two that fits Ether frame */
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/* Values for Accept State flag on RPC answers (See: rfc1831) */
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enum rpc_accept_stat {
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NFS_RPC_SUCCESS = 0, /* RPC executed successfully */
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NFS_RPC_PROG_UNAVAIL = 1, /* remote hasn't exported program */
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NFS_RPC_PROG_MISMATCH = 2, /* remote can't support version # */
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NFS_RPC_PROC_UNAVAIL = 3, /* program can't support procedure */
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NFS_RPC_GARBAGE_ARGS = 4, /* procedure can't decode params */
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NFS_RPC_SYSTEM_ERR = 5 /* errors like memory allocation failure */
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};
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struct rpc_t {
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union {
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uint8_t data[2048];
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struct {
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uint32_t id;
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uint32_t type;
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uint32_t rpcvers;
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uint32_t prog;
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uint32_t vers;
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uint32_t proc;
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uint32_t data[1];
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} call;
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struct {
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uint32_t id;
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uint32_t type;
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uint32_t rstatus;
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uint32_t verifier;
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uint32_t v2;
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uint32_t astatus;
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uint32_t data[NFS_READ_SIZE];
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} reply;
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} u;
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} __attribute__((packed));
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void nfs_start(void); /* Begin NFS */
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/**********************************************************************/
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#endif /* __NFS_H__ */
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