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1da177e4 LT |
1 | #ifndef _NFS_FS_SB |
2 | #define _NFS_FS_SB | |
3 | ||
4 | #include <linux/list.h> | |
5 | #include <linux/backing-dev.h> | |
ef818a28 | 6 | #include <linux/wait.h> |
557134a3 AA |
7 | #include <linux/nfs_xdr.h> |
8 | #include <linux/sunrpc/xprt.h> | |
ef818a28 SD |
9 | |
10 | #include <asm/atomic.h> | |
1da177e4 | 11 | |
557134a3 | 12 | struct nfs4_session; |
d9ef5a8c | 13 | struct nfs_iostats; |
9289e7f9 | 14 | struct nlm_host; |
cccef3b9 AA |
15 | struct nfs4_sequence_args; |
16 | struct nfs4_sequence_res; | |
17 | struct nfs_server; | |
97dc1359 | 18 | struct nfs4_minor_version_ops; |
d9ef5a8c | 19 | |
24c8dbbb DH |
20 | /* |
21 | * The nfs_client identifies our client state to the server. | |
22 | */ | |
23 | struct nfs_client { | |
24 | atomic_t cl_count; | |
25 | int cl_cons_state; /* current construction state (-ve: init error) */ | |
26 | #define NFS_CS_READY 0 /* ready to be used */ | |
27 | #define NFS_CS_INITING 1 /* busy initialising */ | |
76db6d95 | 28 | #define NFS_CS_SESSION_INITING 2 /* busy initialising session */ |
24c8dbbb | 29 | unsigned long cl_res_state; /* NFS resources state */ |
24c8dbbb DH |
30 | #define NFS_CS_CALLBACK 1 /* - callback started */ |
31 | #define NFS_CS_IDMAP 2 /* - idmap started */ | |
5dd3177a | 32 | #define NFS_CS_RENEWD 3 /* - renewd started */ |
6e4cffd7 CL |
33 | struct sockaddr_storage cl_addr; /* server identifier */ |
34 | size_t cl_addrlen; | |
24c8dbbb DH |
35 | char * cl_hostname; /* hostname of server */ |
36 | struct list_head cl_share_link; /* link in global client list */ | |
37 | struct list_head cl_superblocks; /* List of nfs_server structs */ | |
38 | ||
39 | struct rpc_clnt * cl_rpcclient; | |
8fa5c000 | 40 | const struct nfs_rpc_ops *rpc_ops; /* NFS protocol vector */ |
59dca3b2 | 41 | int cl_proto; /* Network transport protocol */ |
24c8dbbb | 42 | |
94a417f3 | 43 | u32 cl_minorversion;/* NFSv4 minorversion */ |
7c67db3a TM |
44 | struct rpc_cred *cl_machine_cred; |
45 | ||
24c8dbbb DH |
46 | #ifdef CONFIG_NFS_V4 |
47 | u64 cl_clientid; /* constant */ | |
24c8dbbb DH |
48 | unsigned long cl_state; |
49 | ||
24c8dbbb DH |
50 | spinlock_t cl_lock; |
51 | ||
52 | unsigned long cl_lease_time; | |
53 | unsigned long cl_last_renewal; | |
52bad64d | 54 | struct delayed_work cl_renewd; |
24c8dbbb DH |
55 | |
56 | struct rpc_wait_queue cl_rpcwaitq; | |
57 | ||
58 | /* used for the setclientid verifier */ | |
59 | struct timespec cl_boot_time; | |
60 | ||
61 | /* idmapper */ | |
62 | struct idmap * cl_idmap; | |
63 | ||
64 | /* Our own IP address, as a null-terminated string. | |
65 | * This is used to generate the clientid, and the callback address. | |
66 | */ | |
4392f259 | 67 | char cl_ipaddr[48]; |
24c8dbbb | 68 | unsigned char cl_id_uniquifier; |
f4eecd5d | 69 | u32 cl_cb_ident; /* v4.0 callback identifier */ |
97dc1359 | 70 | const struct nfs4_minor_version_ops *cl_mvops; |
94a417f3 | 71 | #endif /* CONFIG_NFS_V4 */ |
14727281 | 72 | |
557134a3 | 73 | #ifdef CONFIG_NFS_V4_1 |
99fe60d0 BH |
74 | /* clientid returned from EXCHANGE_ID, used by session operations */ |
75 | u64 cl_ex_clid; | |
76 | /* The sequence id to use for the next CREATE_SESSION */ | |
77 | u32 cl_seqid; | |
78 | /* The flags used for obtaining the clientid during EXCHANGE_ID */ | |
79 | u32 cl_exchange_flags; | |
557134a3 | 80 | struct nfs4_session *cl_session; /* sharred session */ |
974cec8c | 81 | struct list_head cl_layouts; |
b1f69b75 | 82 | struct pnfs_deviceid_cache *cl_devid_cache; /* pNFS deviceid cache */ |
557134a3 AA |
83 | #endif /* CONFIG_NFS_V4_1 */ |
84 | ||
14727281 DH |
85 | #ifdef CONFIG_NFS_FSCACHE |
86 | struct fscache_cookie *fscache; /* client index cache cookie */ | |
87 | #endif | |
24c8dbbb DH |
88 | }; |
89 | ||
1da177e4 LT |
90 | /* |
91 | * NFS client parameters stored in the superblock. | |
92 | */ | |
93 | struct nfs_server { | |
27951bd2 | 94 | struct nfs_client * nfs_client; /* shared client and NFS4 state */ |
54ceac45 DH |
95 | struct list_head client_link; /* List of other nfs_server structs |
96 | * that share the same client | |
97 | */ | |
98 | struct list_head master_link; /* link in master servers list */ | |
1da177e4 | 99 | struct rpc_clnt * client; /* RPC client handle */ |
b7fa0554 | 100 | struct rpc_clnt * client_acl; /* ACL RPC client handle */ |
9289e7f9 | 101 | struct nlm_host *nlm_host; /* NLM client handle */ |
003cb608 | 102 | struct nfs_iostats __percpu *io_stats; /* I/O statistics */ |
1da177e4 | 103 | struct backing_dev_info backing_dev_info; |
277866a0 | 104 | atomic_long_t writeback; /* number of writeback pages */ |
1da177e4 LT |
105 | int flags; /* various flags */ |
106 | unsigned int caps; /* server capabilities */ | |
107 | unsigned int rsize; /* read size */ | |
108 | unsigned int rpages; /* read size (in pages) */ | |
109 | unsigned int wsize; /* write size */ | |
110 | unsigned int wpages; /* write size (in pages) */ | |
111 | unsigned int wtmult; /* server disk block size */ | |
112 | unsigned int dtsize; /* readdir size */ | |
f22d6d79 | 113 | unsigned short port; /* "port=" setting */ |
1da177e4 LT |
114 | unsigned int bsize; /* server block size */ |
115 | unsigned int acregmin; /* attr cache timeouts */ | |
116 | unsigned int acregmax; | |
117 | unsigned int acdirmin; | |
118 | unsigned int acdirmax; | |
119 | unsigned int namelen; | |
c6a6f19e DH |
120 | unsigned int options; /* extra options enabled by mount */ |
121 | #define NFS_OPTION_FSCACHE 0x00000001 /* - local caching enabled */ | |
54ceac45 | 122 | |
8b4bdcf8 | 123 | struct nfs_fsid fsid; |
54ceac45 | 124 | __u64 maxfilesize; /* maximum file size */ |
6b96724e | 125 | struct timespec time_delta; /* smallest time granularity */ |
67ec9f46 | 126 | unsigned long mount_time; /* when this fs was mounted */ |
54ceac45 DH |
127 | dev_t s_dev; /* superblock dev numbers */ |
128 | ||
08734048 DH |
129 | #ifdef CONFIG_NFS_FSCACHE |
130 | struct nfs_fscache_key *fscache_key; /* unique key for superblock */ | |
131 | struct fscache_cookie *fscache; /* superblock cookie */ | |
132 | #endif | |
133 | ||
1da177e4 | 134 | #ifdef CONFIG_NFS_V4 |
1da177e4 LT |
135 | u32 attr_bitmask[2];/* V4 bitmask representing the set |
136 | of attributes supported on this | |
137 | filesystem */ | |
a65318bf TM |
138 | u32 cache_consistency_bitmask[2]; |
139 | /* V4 bitmask representing the subset | |
140 | of change attribute, size, ctime | |
141 | and mtime attributes supported by | |
142 | the server */ | |
1da177e4 LT |
143 | u32 acl_bitmask; /* V4 bitmask representing the ACEs |
144 | that are supported on this | |
145 | filesystem */ | |
85e174ba | 146 | struct pnfs_layoutdriver_type *pnfs_curr_ld; /* Active layout driver */ |
f7e8917a | 147 | struct rpc_wait_queue roc_rpcwaitq; |
24d292b8 CL |
148 | |
149 | /* the following fields are protected by nfs_client->cl_lock */ | |
150 | struct rb_root state_owners; | |
151 | struct rb_root openowner_id; | |
152 | struct rb_root lockowner_id; | |
1da177e4 | 153 | #endif |
d3978bb3 | 154 | struct list_head delegations; |
54ceac45 | 155 | void (*destroy)(struct nfs_server *); |
ef818a28 SD |
156 | |
157 | atomic_t active; /* Keep trace of any activity to this server */ | |
3f8400d1 CL |
158 | |
159 | /* mountd-related mount options */ | |
160 | struct sockaddr_storage mountd_address; | |
161 | size_t mountd_addrlen; | |
162 | u32 mountd_version; | |
163 | unsigned short mountd_port; | |
164 | unsigned short mountd_protocol; | |
1da177e4 LT |
165 | }; |
166 | ||
167 | /* Server capabilities */ | |
168 | #define NFS_CAP_READDIRPLUS (1U << 0) | |
169 | #define NFS_CAP_HARDLINKS (1U << 1) | |
170 | #define NFS_CAP_SYMLINKS (1U << 2) | |
171 | #define NFS_CAP_ACLS (1U << 3) | |
172 | #define NFS_CAP_ATOMIC_OPEN (1U << 4) | |
62ab460c TM |
173 | #define NFS_CAP_CHANGE_ATTR (1U << 5) |
174 | #define NFS_CAP_FILEID (1U << 6) | |
175 | #define NFS_CAP_MODE (1U << 7) | |
176 | #define NFS_CAP_NLINK (1U << 8) | |
177 | #define NFS_CAP_OWNER (1U << 9) | |
178 | #define NFS_CAP_OWNER_GROUP (1U << 10) | |
179 | #define NFS_CAP_ATIME (1U << 11) | |
180 | #define NFS_CAP_CTIME (1U << 12) | |
181 | #define NFS_CAP_MTIME (1U << 13) | |
0df5dd4a | 182 | #define NFS_CAP_POSIX_LOCK (1U << 14) |
1da177e4 | 183 | |
557134a3 AA |
184 | |
185 | /* maximum number of slots to use */ | |
186 | #define NFS4_MAX_SLOT_TABLE RPC_MAX_SLOT_TABLE | |
187 | ||
188 | #if defined(CONFIG_NFS_V4_1) | |
189 | ||
190 | /* Sessions */ | |
191 | #define SLOT_TABLE_SZ (NFS4_MAX_SLOT_TABLE/(8*sizeof(long))) | |
192 | struct nfs4_slot_table { | |
193 | struct nfs4_slot *slots; /* seqid per slot */ | |
194 | unsigned long used_slots[SLOT_TABLE_SZ]; /* used/unused bitmap */ | |
195 | spinlock_t slot_tbl_lock; | |
196 | struct rpc_wait_queue slot_tbl_waitq; /* allocators may wait here */ | |
197 | int max_slots; /* # slots in table */ | |
198 | int highest_used_slotid; /* sent to server on each SEQ. | |
199 | * op for dynamic resizing */ | |
b9efa1b2 AA |
200 | int target_max_slots; /* Set by CB_RECALL_SLOT as |
201 | * the new max_slots */ | |
42acd021 | 202 | struct completion complete; |
557134a3 AA |
203 | }; |
204 | ||
205 | static inline int slot_idx(struct nfs4_slot_table *tbl, struct nfs4_slot *sp) | |
206 | { | |
207 | return sp - tbl->slots; | |
208 | } | |
209 | ||
210 | /* | |
211 | * Session related parameters | |
212 | */ | |
213 | struct nfs4_session { | |
214 | struct nfs4_sessionid sess_id; | |
215 | u32 flags; | |
216 | unsigned long session_state; | |
217 | u32 hash_alg; | |
218 | u32 ssv_len; | |
219 | ||
220 | /* The fore and back channel */ | |
221 | struct nfs4_channel_attrs fc_attrs; | |
222 | struct nfs4_slot_table fc_slot_table; | |
223 | struct nfs4_channel_attrs bc_attrs; | |
f8625a6a | 224 | struct nfs4_slot_table bc_slot_table; |
557134a3 AA |
225 | struct nfs_client *clp; |
226 | }; | |
227 | ||
228 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 229 | #endif |