u-boot/net/nfs.h
Denis Pynkin 704f3acfcf net: Use packed structures for networking
PXE boot is broken with GCC 7.1 due option '-fstore-merging' enabled
by default for '-O2':

BOOTP broadcast 1
data abort
pc : [<8ff8bb30>]          lr : [<00004f1f>]
reloc pc : [<17832b30>]    lr : [<878abf1f>]
sp : 8f558bc0  ip : 00000000     fp : 8ffef5a4
r10: 8ffed248  r9 : 8f558ee0     r8 : 8ffef594
r7 : 0000000e  r6 : 8ffed700     r5 : 00000000  r4 : 8ffed74e
r3 : 00060101  r2 : 8ffed230     r1 : 8ffed706  r0 : 00000ddd
Flags: nzcv  IRQs off  FIQs off  Mode SVC_32
Resetting CPU ...

Core reason is usage of structures for network headers without packed
attribute.

Reviewed-by: Yauheni Kaliuta <yauheni.kaliuta@redhat.com>
Signed-off-by: Denis Pynkin <denis.pynkin@collabora.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2017-08-07 15:18:31 -05:00

88 lines
2.1 KiB
C

/*
* (C) Masami Komiya <mkomiya@sonare.it> 2004
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef __NFS_H__
#define __NFS_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 PORTMAP_GETPORT 3
#define MOUNT_ADDENTRY 1
#define MOUNT_UMOUNTALL 4
#define NFS_LOOKUP 4
#define NFS_READLINK 5
#define NFS_READ 6
#define NFS3PROC_LOOKUP 3
#define NFS_FHSIZE 32
#define NFS3_FHSIZE 64
#define NFSERR_PERM 1
#define NFSERR_NOENT 2
#define NFSERR_ACCES 13
#define NFSERR_ISDIR 21
#define NFSERR_INVAL 22
/* 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, the config file may want to use a
* bigger value. In any case, most NFS servers are optimized for a power of 2.
*/
#ifdef CONFIG_NFS_READ_SIZE
#define NFS_READ_SIZE CONFIG_NFS_READ_SIZE
#else
#define NFS_READ_SIZE 1024 /* biggest power of two that fits Ether frame */
#endif
/* 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 */
};
struct rpc_t {
union {
uint8_t data[2048];
struct {
uint32_t id;
uint32_t type;
uint32_t rpcvers;
uint32_t prog;
uint32_t vers;
uint32_t proc;
uint32_t data[1];
} call;
struct {
uint32_t id;
uint32_t type;
uint32_t rstatus;
uint32_t verifier;
uint32_t v2;
uint32_t astatus;
uint32_t data[NFS_READ_SIZE];
} reply;
} u;
} __attribute__((packed));
void nfs_start(void); /* Begin NFS */
/**********************************************************************/
#endif /* __NFS_H__ */