forked from Minki/linux
92 lines
2.0 KiB
C
92 lines
2.0 KiB
C
/*
|
|
* linux/fs/nfs/callback.h
|
|
*
|
|
* Copyright (C) 2004 Trond Myklebust
|
|
*
|
|
* NFSv4 callback definitions
|
|
*/
|
|
#ifndef __LINUX_FS_NFS_CALLBACK_H
|
|
#define __LINUX_FS_NFS_CALLBACK_H
|
|
|
|
#define NFS4_CALLBACK 0x40000000
|
|
#define NFS4_CALLBACK_XDRSIZE 2048
|
|
#define NFS4_CALLBACK_BUFSIZE (1024 + NFS4_CALLBACK_XDRSIZE)
|
|
|
|
enum nfs4_callback_procnum {
|
|
CB_NULL = 0,
|
|
CB_COMPOUND = 1,
|
|
};
|
|
|
|
enum nfs4_callback_opnum {
|
|
OP_CB_GETATTR = 3,
|
|
OP_CB_RECALL = 4,
|
|
/* Callback operations new to NFSv4.1 */
|
|
OP_CB_LAYOUTRECALL = 5,
|
|
OP_CB_NOTIFY = 6,
|
|
OP_CB_PUSH_DELEG = 7,
|
|
OP_CB_RECALL_ANY = 8,
|
|
OP_CB_RECALLABLE_OBJ_AVAIL = 9,
|
|
OP_CB_RECALL_SLOT = 10,
|
|
OP_CB_SEQUENCE = 11,
|
|
OP_CB_WANTS_CANCELLED = 12,
|
|
OP_CB_NOTIFY_LOCK = 13,
|
|
OP_CB_ILLEGAL = 10044,
|
|
};
|
|
|
|
struct cb_compound_hdr_arg {
|
|
unsigned int taglen;
|
|
const char *tag;
|
|
unsigned int minorversion;
|
|
unsigned nops;
|
|
};
|
|
|
|
struct cb_compound_hdr_res {
|
|
__be32 *status;
|
|
unsigned int taglen;
|
|
const char *tag;
|
|
__be32 *nops;
|
|
};
|
|
|
|
struct cb_getattrargs {
|
|
struct sockaddr *addr;
|
|
struct nfs_fh fh;
|
|
uint32_t bitmap[2];
|
|
};
|
|
|
|
struct cb_getattrres {
|
|
__be32 status;
|
|
uint32_t bitmap[2];
|
|
uint64_t size;
|
|
uint64_t change_attr;
|
|
struct timespec ctime;
|
|
struct timespec mtime;
|
|
};
|
|
|
|
struct cb_recallargs {
|
|
struct sockaddr *addr;
|
|
struct nfs_fh fh;
|
|
nfs4_stateid stateid;
|
|
uint32_t truncate;
|
|
};
|
|
|
|
extern __be32 nfs4_callback_getattr(struct cb_getattrargs *args, struct cb_getattrres *res);
|
|
extern __be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy);
|
|
|
|
#ifdef CONFIG_NFS_V4
|
|
extern int nfs_callback_up(u32 minorversion, struct rpc_xprt *xprt);
|
|
extern void nfs_callback_down(int minorversion);
|
|
#endif /* CONFIG_NFS_V4 */
|
|
|
|
/*
|
|
* nfs41: Callbacks are expected to not cause substantial latency,
|
|
* so we limit their concurrency to 1 by setting up the maximum number
|
|
* of slots for the backchannel.
|
|
*/
|
|
#define NFS41_BC_MIN_CALLBACKS 1
|
|
|
|
extern unsigned int nfs_callback_set_tcpport;
|
|
extern unsigned short nfs_callback_tcpport;
|
|
extern unsigned short nfs_callback_tcpport6;
|
|
|
|
#endif /* __LINUX_FS_NFS_CALLBACK_H */
|