Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * linux/fs/nfs/callback.h | |
3 | * | |
4 | * Copyright (C) 2004 Trond Myklebust | |
5 | * | |
6 | * NFSv4 callback definitions | |
7 | */ | |
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 | ||
15 | enum nfs4_callback_procnum { | |
16 | CB_NULL = 0, | |
17 | CB_COMPOUND = 1, | |
18 | }; | |
19 | ||
20 | enum nfs4_callback_opnum { | |
21 | OP_CB_GETATTR = 3, | |
22 | OP_CB_RECALL = 4, | |
45377b94 BH |
23 | /* Callback operations new to NFSv4.1 */ |
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, | |
34bc47c9 | 33 | OP_CB_NOTIFY_DEVICEID = 14, |
1da177e4 LT |
34 | OP_CB_ILLEGAL = 10044, |
35 | }; | |
36 | ||
c36fca52 AA |
37 | struct cb_process_state { |
38 | __be32 drc_status; | |
39 | struct nfs_client *clp; | |
40 | struct nfs4_sessionid *svc_sid; /* v4.1 callback service sessionid */ | |
41 | }; | |
42 | ||
1da177e4 | 43 | struct cb_compound_hdr_arg { |
2e42c3e2 | 44 | unsigned int taglen; |
1da177e4 | 45 | const char *tag; |
b8f2ef84 | 46 | unsigned int minorversion; |
c36fca52 | 47 | unsigned int cb_ident; /* v4.0 callback identifier */ |
1da177e4 LT |
48 | unsigned nops; |
49 | }; | |
50 | ||
51 | struct cb_compound_hdr_res { | |
5704fdeb | 52 | __be32 *status; |
2e42c3e2 | 53 | unsigned int taglen; |
1da177e4 | 54 | const char *tag; |
5704fdeb | 55 | __be32 *nops; |
1da177e4 LT |
56 | }; |
57 | ||
58 | struct cb_getattrargs { | |
671beed7 | 59 | struct sockaddr *addr; |
1da177e4 LT |
60 | struct nfs_fh fh; |
61 | uint32_t bitmap[2]; | |
62 | }; | |
63 | ||
64 | struct cb_getattrres { | |
e6f684f6 | 65 | __be32 status; |
1da177e4 LT |
66 | uint32_t bitmap[2]; |
67 | uint64_t size; | |
68 | uint64_t change_attr; | |
69 | struct timespec ctime; | |
70 | struct timespec mtime; | |
71 | }; | |
72 | ||
73 | struct cb_recallargs { | |
c1d35866 | 74 | struct sockaddr *addr; |
1da177e4 LT |
75 | struct nfs_fh fh; |
76 | nfs4_stateid stateid; | |
77 | uint32_t truncate; | |
78 | }; | |
79 | ||
2d9b9ec3 BH |
80 | #if defined(CONFIG_NFS_V4_1) |
81 | ||
82 | struct referring_call { | |
83 | uint32_t rc_sequenceid; | |
84 | uint32_t rc_slotid; | |
85 | }; | |
86 | ||
87 | struct referring_call_list { | |
88 | struct nfs4_sessionid rcl_sessionid; | |
89 | uint32_t rcl_nrefcalls; | |
90 | struct referring_call *rcl_refcalls; | |
91 | }; | |
92 | ||
93 | struct cb_sequenceargs { | |
65fc64e5 | 94 | struct sockaddr *csa_addr; |
2d9b9ec3 BH |
95 | struct nfs4_sessionid csa_sessionid; |
96 | uint32_t csa_sequenceid; | |
97 | uint32_t csa_slotid; | |
98 | uint32_t csa_highestslotid; | |
99 | uint32_t csa_cachethis; | |
100 | uint32_t csa_nrclists; | |
101 | struct referring_call_list *csa_rclists; | |
102 | }; | |
103 | ||
104 | struct cb_sequenceres { | |
65fc64e5 | 105 | __be32 csr_status; |
2d9b9ec3 BH |
106 | struct nfs4_sessionid csr_sessionid; |
107 | uint32_t csr_sequenceid; | |
108 | uint32_t csr_slotid; | |
109 | uint32_t csr_highestslotid; | |
110 | uint32_t csr_target_highestslotid; | |
111 | }; | |
112 | ||
c36fca52 AA |
113 | extern __be32 nfs4_callback_sequence(struct cb_sequenceargs *args, |
114 | struct cb_sequenceres *res, | |
115 | struct cb_process_state *cps); | |
d49433e1 | 116 | |
2597641d AB |
117 | extern int nfs41_validate_delegation_stateid(struct nfs_delegation *delegation, |
118 | const nfs4_stateid *stateid); | |
31f09607 AB |
119 | |
120 | #define RCA4_TYPE_MASK_RDATA_DLG 0 | |
121 | #define RCA4_TYPE_MASK_WDATA_DLG 1 | |
122 | ||
123 | struct cb_recallanyargs { | |
124 | struct sockaddr *craa_addr; | |
125 | uint32_t craa_objs_to_keep; | |
126 | uint32_t craa_type_mask; | |
127 | }; | |
128 | ||
c36fca52 AA |
129 | extern __be32 nfs4_callback_recallany(struct cb_recallanyargs *args, |
130 | void *dummy, | |
131 | struct cb_process_state *cps); | |
b9efa1b2 AA |
132 | |
133 | struct cb_recallslotargs { | |
134 | struct sockaddr *crsa_addr; | |
135 | uint32_t crsa_target_max_slots; | |
136 | }; | |
c36fca52 AA |
137 | extern __be32 nfs4_callback_recallslot(struct cb_recallslotargs *args, |
138 | void *dummy, | |
139 | struct cb_process_state *cps); | |
b9efa1b2 | 140 | |
f2a62561 FI |
141 | struct cb_layoutrecallargs { |
142 | struct sockaddr *cbl_addr; | |
143 | uint32_t cbl_recall_type; | |
144 | uint32_t cbl_layout_type; | |
145 | uint32_t cbl_layoutchanged; | |
146 | union { | |
147 | struct { | |
148 | struct nfs_fh cbl_fh; | |
149 | struct pnfs_layout_range cbl_range; | |
150 | nfs4_stateid cbl_stateid; | |
151 | }; | |
152 | struct nfs_fsid cbl_fsid; | |
153 | }; | |
154 | }; | |
155 | ||
156 | extern unsigned nfs4_callback_layoutrecall( | |
157 | struct cb_layoutrecallargs *args, | |
158 | void *dummy, struct cb_process_state *cps); | |
159 | ||
42acd021 AA |
160 | extern void nfs4_check_drain_bc_complete(struct nfs4_session *ses); |
161 | extern void nfs4_cb_take_slot(struct nfs_client *clp); | |
2d9b9ec3 BH |
162 | #endif /* CONFIG_NFS_V4_1 */ |
163 | ||
c36fca52 AA |
164 | extern __be32 nfs4_callback_getattr(struct cb_getattrargs *args, |
165 | struct cb_getattrres *res, | |
166 | struct cb_process_state *cps); | |
167 | extern __be32 nfs4_callback_recall(struct cb_recallargs *args, void *dummy, | |
168 | struct cb_process_state *cps); | |
5ae1fbce | 169 | #ifdef CONFIG_NFS_V4 |
71468513 | 170 | extern int nfs_callback_up(u32 minorversion, struct rpc_xprt *xprt); |
e82dc22d | 171 | extern void nfs_callback_down(int minorversion); |
2597641d AB |
172 | extern int nfs4_validate_delegation_stateid(struct nfs_delegation *delegation, |
173 | const nfs4_stateid *stateid); | |
2c2618c6 | 174 | extern int nfs4_set_callback_sessionid(struct nfs_client *clp); |
e82dc22d | 175 | #endif /* CONFIG_NFS_V4 */ |
a43cde94 RL |
176 | /* |
177 | * nfs41: Callbacks are expected to not cause substantial latency, | |
178 | * so we limit their concurrency to 1 by setting up the maximum number | |
179 | * of slots for the backchannel. | |
180 | */ | |
181 | #define NFS41_BC_MIN_CALLBACKS 1 | |
d49433e1 | 182 | #define NFS41_BC_MAX_CALLBACKS 1 |
a43cde94 | 183 | |
a72b4422 | 184 | extern unsigned int nfs_callback_set_tcpport; |
1da177e4 | 185 | extern unsigned short nfs_callback_tcpport; |
f738f517 | 186 | extern unsigned short nfs_callback_tcpport6; |
1da177e4 LT |
187 | |
188 | #endif /* __LINUX_FS_NFS_CALLBACK_H */ |