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/* SPDX-License-Identifier: GPL-2.0+ */
/*
* (C) Masami Komiya <mkomiya@sonare.it> 2004
*/
#ifndef __NFS_COMMON_H__
#define __NFS_COMMON_H__
#define SUNRPC_PORT 111
#define PROG_PORTMAP 100000
#define PROG_NFS 100003
#define PROG_MOUNT 100005
#define MSG_CALL 0
#define MSG_REPLY 1
#define HASHES_PER_LINE 65 /* Number of "loading" hashes per line */
#define NFS_RETRY_COUNT 30
#define NFS_RPC_ERR 1
#define NFS_RPC_DROP 124
#define NFSERR_PERM 1
#define NFSERR_NOENT 2
#define NFSERR_ACCES 13
#define NFSERR_ISDIR 21
#define NFSERR_INVAL 22
/* Values for Accept State flag on RPC answers (See: rfc1831) */
enum rpc_accept_stat {
NFS_RPC_SUCCESS = 0, /* RPC executed successfully */
NFS_RPC_PROG_UNAVAIL = 1, /* remote hasn't exported program */
NFS_RPC_PROG_MISMATCH = 2, /* remote can't support version # */
NFS_RPC_PROC_UNAVAIL = 3, /* program can't support procedure */
NFS_RPC_GARBAGE_ARGS = 4, /* procedure can't decode params */
NFS_RPC_SYSTEM_ERR = 5 /* errors like memory allocation failure */
};
enum nfs_version {
NFS_UNKOWN = 0,
NFS_V1 = 1,
NFS_V2 = 2,
NFS_V3 = 3,
};
extern enum net_loop_state nfs_download_state;
extern char *nfs_filename;
extern char *nfs_path;
extern char nfs_path_buff[2048];
extern struct in_addr nfs_server_ip;
extern int nfs_server_mount_port;
extern int nfs_server_port;
extern int nfs_our_port;
extern int nfs_timeout_count;
extern unsigned long rpc_id;
extern int nfs_offset;
extern int nfs_len;
extern const ulong nfs_timeout;
extern int nfs_state;
#define STATE_PRCLOOKUP_PROG_MOUNT_REQ 1
#define STATE_PRCLOOKUP_PROG_NFS_REQ 2
#define STATE_MOUNT_REQ 3
#define STATE_UMOUNT_REQ 4
#define STATE_LOOKUP_REQ 5
#define STATE_READ_REQ 6
#define STATE_READLINK_REQ 7
/*
* Block size used for NFS read accesses. A RPC reply packet (including all
* headers) must fit within a single Ethernet frame to avoid fragmentation.
* However, if CONFIG_IP_DEFRAG is set, a bigger value could be used. In any
* case, most NFS servers are optimized for a power of 2.
*/
#define NFS_READ_SIZE 1024 /* biggest power of two that fits Ether frame */
#define NFS_MAX_ATTRS 26
struct rpc_t {
union {
u8 data[NFS_READ_SIZE + (6 + NFS_MAX_ATTRS) *
sizeof(uint32_t)];
struct {
u32 id;
u32 type;
u32 rpcvers;
u32 prog;
u32 vers;
u32 proc;
u32 data[1];
} call;
struct {
u32 id;
u32 type;
u32 rstatus;
u32 verifier;
u32 v2;
u32 astatus;
u32 data[NFS_READ_SIZE / sizeof(u32) +
NFS_MAX_ATTRS];
} reply;
} u;
};
char *nfs_basename(char *path);
char *nfs_dirname(char *path);
void rpc_req_common(int rpc_prog, int rpc_proc, uint32_t *data, int datalen,
uchar *txbuff, int *pktlen, int *sport);
void nfs_send(void);
void nfs_pkt_recv(uchar *pkt, unsigned int len);
extern enum nfs_version choosen_nfs_version;
/*
* Implementation specific functions called from common code
*/
void rpc_req(int rpc_prog, int rpc_proc, uint32_t *data, int datalen);
void nfs_refresh_timeout(void);
/**********************************************************************/
#endif /* __NFS_COMMON_H__ */
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