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8#ifndef __LINUX_FS_NFS_CALLBACK_H
9#define __LINUX_FS_NFS_CALLBACK_H
10
11#define NFS4_CALLBACK 0x40000000
12#define NFS4_CALLBACK_XDRSIZE 2048
13#define NFS4_CALLBACK_BUFSIZE (1024 + NFS4_CALLBACK_XDRSIZE)
14
15enum nfs4_callback_procnum {
16 CB_NULL = 0,
17 CB_COMPOUND = 1,
18};
19
20enum nfs4_callback_opnum {
21 OP_CB_GETATTR = 3,
22 OP_CB_RECALL = 4,
23
24 OP_CB_LAYOUTRECALL = 5,
25 OP_CB_NOTIFY = 6,
26 OP_CB_PUSH_DELEG = 7,
27 OP_CB_RECALL_ANY = 8,
28 OP_CB_RECALLABLE_OBJ_AVAIL = 9,
29 OP_CB_RECALL_SLOT = 10,
30 OP_CB_SEQUENCE = 11,
31 OP_CB_WANTS_CANCELLED = 12,
32 OP_CB_NOTIFY_LOCK = 13,
33 OP_CB_NOTIFY_DEVICEID = 14,
34 OP_CB_ILLEGAL = 10044,
35};
36
37struct cb_compound_hdr_arg {
38 unsigned int taglen;
39 const char *tag;
40 unsigned int minorversion;
41 unsigned nops;
42};
43
44struct cb_compound_hdr_res {
45 __be32 *status;
46 unsigned int taglen;
47 const char *tag;
48 __be32 *nops;
49};
50
51struct cb_getattrargs {
52 struct sockaddr *addr;
53 struct nfs_fh fh;
54 uint32_t bitmap[2];
55};
56
57struct cb_getattrres {
58 __be32 status;
59 uint32_t bitmap[2];
60 uint64_t size;
61 uint64_t change_attr;
62 struct timespec ctime;
63 struct timespec mtime;
64};
65
66struct cb_recallargs {
67 struct sockaddr *addr;
68 struct nfs_fh fh;
69 nfs4_stateid stateid;
70 uint32_t truncate;
71};
72
73#if defined(CONFIG_NFS_V4_1)
74
75struct referring_call {
76 uint32_t rc_sequenceid;
77 uint32_t rc_slotid;
78};
79
80struct referring_call_list {
81 struct nfs4_sessionid rcl_sessionid;
82 uint32_t rcl_nrefcalls;
83 struct referring_call *rcl_refcalls;
84};
85
86struct cb_sequenceargs {
87 struct sockaddr *csa_addr;
88 struct nfs4_sessionid csa_sessionid;
89 uint32_t csa_sequenceid;
90 uint32_t csa_slotid;
91 uint32_t csa_highestslotid;
92 uint32_t csa_cachethis;
93 uint32_t csa_nrclists;
94 struct referring_call_list *csa_rclists;
95};
96
97struct cb_sequenceres {
98 __be32 csr_status;
99 struct nfs4_sessionid csr_sessionid;
100 uint32_t csr_sequenceid;
101 uint32_t csr_slotid;
102 uint32_t csr_highestslotid;
103 uint32_t csr_target_highestslotid;
104};
105
106extern unsigned nfs4_callback_sequence(struct cb_sequenceargs *args,
107 struct cb_sequenceres *res);
108
109#endif
110
111extern __be32 nfs4_callback_getattr(struct cb_getattrargs *args, struct cb_getattrres *res);
112extern __be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy);
113
114#ifdef CONFIG_NFS_V4
115extern int nfs_callback_up(u32 minorversion, struct rpc_xprt *xprt);
116extern void nfs_callback_down(int minorversion);
117#endif
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123
124#define NFS41_BC_MIN_CALLBACKS 1
125#define NFS41_BC_MAX_CALLBACKS 1
126
127extern unsigned int nfs_callback_set_tcpport;
128extern unsigned short nfs_callback_tcpport;
129extern unsigned short nfs_callback_tcpport6;
130
131#endif
132