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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> | |
9157c31d | 6 | #include <linux/idr.h> |
ef818a28 | 7 | #include <linux/wait.h> |
557134a3 AA |
8 | #include <linux/nfs_xdr.h> |
9 | #include <linux/sunrpc/xprt.h> | |
ef818a28 | 10 | |
60063497 | 11 | #include <linux/atomic.h> |
1da177e4 | 12 | |
557134a3 | 13 | struct nfs4_session; |
d9ef5a8c | 14 | struct nfs_iostats; |
9289e7f9 | 15 | struct nlm_host; |
cccef3b9 AA |
16 | struct nfs4_sequence_args; |
17 | struct nfs4_sequence_res; | |
18 | struct nfs_server; | |
97dc1359 | 19 | struct nfs4_minor_version_ops; |
79d4e1f0 | 20 | struct nfs41_server_scope; |
7d2ed9ac | 21 | struct nfs41_impl_id; |
d9ef5a8c | 22 | |
24c8dbbb DH |
23 | /* |
24 | * The nfs_client identifies our client state to the server. | |
25 | */ | |
26 | struct nfs_client { | |
27 | atomic_t cl_count; | |
2a4c8994 | 28 | atomic_t cl_mds_count; |
24c8dbbb DH |
29 | int cl_cons_state; /* current construction state (-ve: init error) */ |
30 | #define NFS_CS_READY 0 /* ready to be used */ | |
31 | #define NFS_CS_INITING 1 /* busy initialising */ | |
76db6d95 | 32 | #define NFS_CS_SESSION_INITING 2 /* busy initialising session */ |
24c8dbbb | 33 | unsigned long cl_res_state; /* NFS resources state */ |
24c8dbbb DH |
34 | #define NFS_CS_CALLBACK 1 /* - callback started */ |
35 | #define NFS_CS_IDMAP 2 /* - idmap started */ | |
5dd3177a | 36 | #define NFS_CS_RENEWD 3 /* - renewd started */ |
d3b4c9d7 | 37 | #define NFS_CS_STOP_RENEW 4 /* no more state to renew */ |
d6fb79d4 | 38 | #define NFS_CS_CHECK_LEASE_TIME 5 /* need to check lease time */ |
4bf590e0 CL |
39 | unsigned long cl_flags; /* behavior switches */ |
40 | #define NFS_CS_NORESVPORT 0 /* - use ephemeral src port */ | |
41 | #define NFS_CS_DISCRTRY 1 /* - disconnect on RPC retry */ | |
6e4cffd7 CL |
42 | struct sockaddr_storage cl_addr; /* server identifier */ |
43 | size_t cl_addrlen; | |
24c8dbbb DH |
44 | char * cl_hostname; /* hostname of server */ |
45 | struct list_head cl_share_link; /* link in global client list */ | |
46 | struct list_head cl_superblocks; /* List of nfs_server structs */ | |
47 | ||
48 | struct rpc_clnt * cl_rpcclient; | |
8fa5c000 | 49 | const struct nfs_rpc_ops *rpc_ops; /* NFS protocol vector */ |
59dca3b2 | 50 | int cl_proto; /* Network transport protocol */ |
ab7017a3 | 51 | struct nfs_subversion * cl_nfs_mod; /* pointer to nfs version module */ |
24c8dbbb | 52 | |
94a417f3 | 53 | u32 cl_minorversion;/* NFSv4 minorversion */ |
7c67db3a TM |
54 | struct rpc_cred *cl_machine_cred; |
55 | ||
89d77c8f | 56 | #if IS_ENABLED(CONFIG_NFS_V4) |
24c8dbbb | 57 | u64 cl_clientid; /* constant */ |
fd954ae1 | 58 | nfs4_verifier cl_confirm; /* Clientid verifier */ |
24c8dbbb DH |
59 | unsigned long cl_state; |
60 | ||
24c8dbbb DH |
61 | spinlock_t cl_lock; |
62 | ||
63 | unsigned long cl_lease_time; | |
64 | unsigned long cl_last_renewal; | |
52bad64d | 65 | struct delayed_work cl_renewd; |
24c8dbbb DH |
66 | |
67 | struct rpc_wait_queue cl_rpcwaitq; | |
68 | ||
24c8dbbb DH |
69 | /* idmapper */ |
70 | struct idmap * cl_idmap; | |
71 | ||
72 | /* Our own IP address, as a null-terminated string. | |
de734831 | 73 | * This is used to generate the mv0 callback address. |
24c8dbbb | 74 | */ |
4392f259 | 75 | char cl_ipaddr[48]; |
f4eecd5d | 76 | u32 cl_cb_ident; /* v4.0 callback identifier */ |
97dc1359 | 77 | const struct nfs4_minor_version_ops *cl_mvops; |
14727281 | 78 | |
99fe60d0 BH |
79 | /* The sequence id to use for the next CREATE_SESSION */ |
80 | u32 cl_seqid; | |
81 | /* The flags used for obtaining the clientid during EXCHANGE_ID */ | |
82 | u32 cl_exchange_flags; | |
722baafc | 83 | struct nfs4_session *cl_session; /* shared session */ |
acdeb69d | 84 | struct nfs41_server_owner *cl_serverowner; |
79d4e1f0 | 85 | struct nfs41_server_scope *cl_serverscope; |
59155546 | 86 | struct nfs41_impl_id *cl_implid; |
0400a6b0 | 87 | #endif /* CONFIG_NFS_V4 */ |
557134a3 | 88 | |
14727281 DH |
89 | #ifdef CONFIG_NFS_FSCACHE |
90 | struct fscache_cookie *fscache; /* client index cache cookie */ | |
91 | #endif | |
78fe0f41 | 92 | |
73ea666c | 93 | struct net *cl_net; |
24c8dbbb DH |
94 | }; |
95 | ||
1da177e4 LT |
96 | /* |
97 | * NFS client parameters stored in the superblock. | |
98 | */ | |
99 | struct nfs_server { | |
27951bd2 | 100 | struct nfs_client * nfs_client; /* shared client and NFS4 state */ |
54ceac45 DH |
101 | struct list_head client_link; /* List of other nfs_server structs |
102 | * that share the same client | |
103 | */ | |
104 | struct list_head master_link; /* link in master servers list */ | |
1da177e4 | 105 | struct rpc_clnt * client; /* RPC client handle */ |
b7fa0554 | 106 | struct rpc_clnt * client_acl; /* ACL RPC client handle */ |
9289e7f9 | 107 | struct nlm_host *nlm_host; /* NLM client handle */ |
003cb608 | 108 | struct nfs_iostats __percpu *io_stats; /* I/O statistics */ |
1da177e4 | 109 | struct backing_dev_info backing_dev_info; |
277866a0 | 110 | atomic_long_t writeback; /* number of writeback pages */ |
1da177e4 LT |
111 | int flags; /* various flags */ |
112 | unsigned int caps; /* server capabilities */ | |
113 | unsigned int rsize; /* read size */ | |
114 | unsigned int rpages; /* read size (in pages) */ | |
115 | unsigned int wsize; /* write size */ | |
116 | unsigned int wpages; /* write size (in pages) */ | |
117 | unsigned int wtmult; /* server disk block size */ | |
118 | unsigned int dtsize; /* readdir size */ | |
f22d6d79 | 119 | unsigned short port; /* "port=" setting */ |
1da177e4 LT |
120 | unsigned int bsize; /* server block size */ |
121 | unsigned int acregmin; /* attr cache timeouts */ | |
122 | unsigned int acregmax; | |
123 | unsigned int acdirmin; | |
124 | unsigned int acdirmax; | |
125 | unsigned int namelen; | |
c6a6f19e DH |
126 | unsigned int options; /* extra options enabled by mount */ |
127 | #define NFS_OPTION_FSCACHE 0x00000001 /* - local caching enabled */ | |
54ceac45 | 128 | |
8b4bdcf8 | 129 | struct nfs_fsid fsid; |
54ceac45 | 130 | __u64 maxfilesize; /* maximum file size */ |
6b96724e | 131 | struct timespec time_delta; /* smallest time granularity */ |
67ec9f46 | 132 | unsigned long mount_time; /* when this fs was mounted */ |
54ceac45 DH |
133 | dev_t s_dev; /* superblock dev numbers */ |
134 | ||
08734048 DH |
135 | #ifdef CONFIG_NFS_FSCACHE |
136 | struct nfs_fscache_key *fscache_key; /* unique key for superblock */ | |
137 | struct fscache_cookie *fscache; /* superblock cookie */ | |
138 | #endif | |
139 | ||
a00ed25c | 140 | u32 pnfs_blksize; /* layout_blksize attr */ |
89d77c8f | 141 | #if IS_ENABLED(CONFIG_NFS_V4) |
dae100c2 | 142 | u32 attr_bitmask[3];/* V4 bitmask representing the set |
1da177e4 LT |
143 | of attributes supported on this |
144 | filesystem */ | |
a65318bf TM |
145 | u32 cache_consistency_bitmask[2]; |
146 | /* V4 bitmask representing the subset | |
147 | of change attribute, size, ctime | |
148 | and mtime attributes supported by | |
149 | the server */ | |
1da177e4 LT |
150 | u32 acl_bitmask; /* V4 bitmask representing the ACEs |
151 | that are supported on this | |
152 | filesystem */ | |
264e6351 CL |
153 | u32 fh_expire_type; /* V4 bitmask representing file |
154 | handle volatility type for | |
155 | this filesystem */ | |
85e174ba | 156 | struct pnfs_layoutdriver_type *pnfs_curr_ld; /* Active layout driver */ |
f7e8917a | 157 | struct rpc_wait_queue roc_rpcwaitq; |
2f9fd182 | 158 | void *pnfs_ld_data; /* per mount point data */ |
24d292b8 CL |
159 | |
160 | /* the following fields are protected by nfs_client->cl_lock */ | |
161 | struct rb_root state_owners; | |
1da177e4 | 162 | #endif |
9157c31d | 163 | struct ida openowner_id; |
d2d7ce28 | 164 | struct ida lockowner_id; |
0aaaf5c4 | 165 | struct list_head state_owners_lru; |
6382a441 | 166 | struct list_head layouts; |
d3978bb3 | 167 | struct list_head delegations; |
54ceac45 | 168 | void (*destroy)(struct nfs_server *); |
ef818a28 SD |
169 | |
170 | atomic_t active; /* Keep trace of any activity to this server */ | |
3f8400d1 CL |
171 | |
172 | /* mountd-related mount options */ | |
173 | struct sockaddr_storage mountd_address; | |
174 | size_t mountd_addrlen; | |
175 | u32 mountd_version; | |
176 | unsigned short mountd_port; | |
177 | unsigned short mountd_protocol; | |
1da177e4 LT |
178 | }; |
179 | ||
180 | /* Server capabilities */ | |
181 | #define NFS_CAP_READDIRPLUS (1U << 0) | |
182 | #define NFS_CAP_HARDLINKS (1U << 1) | |
183 | #define NFS_CAP_SYMLINKS (1U << 2) | |
184 | #define NFS_CAP_ACLS (1U << 3) | |
185 | #define NFS_CAP_ATOMIC_OPEN (1U << 4) | |
62ab460c TM |
186 | #define NFS_CAP_CHANGE_ATTR (1U << 5) |
187 | #define NFS_CAP_FILEID (1U << 6) | |
188 | #define NFS_CAP_MODE (1U << 7) | |
189 | #define NFS_CAP_NLINK (1U << 8) | |
190 | #define NFS_CAP_OWNER (1U << 9) | |
191 | #define NFS_CAP_OWNER_GROUP (1U << 10) | |
192 | #define NFS_CAP_ATIME (1U << 11) | |
193 | #define NFS_CAP_CTIME (1U << 12) | |
194 | #define NFS_CAP_MTIME (1U << 13) | |
0df5dd4a | 195 | #define NFS_CAP_POSIX_LOCK (1U << 14) |
b064eca2 | 196 | #define NFS_CAP_UIDGID_NOMAP (1U << 15) |
1da177e4 | 197 | |
557134a3 AA |
198 | |
199 | /* maximum number of slots to use */ | |
ef159e91 TM |
200 | #define NFS4_DEF_SLOT_TABLE_SIZE (16U) |
201 | #define NFS4_MAX_SLOT_TABLE (256U) | |
45d43c29 | 202 | #define NFS4_NO_SLOT ((u32)-1) |
557134a3 | 203 | |
89d77c8f | 204 | #if IS_ENABLED(CONFIG_NFS_V4) |
557134a3 AA |
205 | |
206 | /* Sessions */ | |
ef159e91 | 207 | #define SLOT_TABLE_SZ DIV_ROUND_UP(NFS4_MAX_SLOT_TABLE, 8*sizeof(long)) |
557134a3 AA |
208 | struct nfs4_slot_table { |
209 | struct nfs4_slot *slots; /* seqid per slot */ | |
210 | unsigned long used_slots[SLOT_TABLE_SZ]; /* used/unused bitmap */ | |
211 | spinlock_t slot_tbl_lock; | |
212 | struct rpc_wait_queue slot_tbl_waitq; /* allocators may wait here */ | |
45d43c29 TM |
213 | u32 max_slots; /* # slots in table */ |
214 | u32 highest_used_slotid; /* sent to server on each SEQ. | |
557134a3 | 215 | * op for dynamic resizing */ |
45d43c29 | 216 | u32 target_max_slots; /* Set by CB_RECALL_SLOT as |
b9efa1b2 | 217 | * the new max_slots */ |
42acd021 | 218 | struct completion complete; |
557134a3 AA |
219 | }; |
220 | ||
221 | static inline int slot_idx(struct nfs4_slot_table *tbl, struct nfs4_slot *sp) | |
222 | { | |
223 | return sp - tbl->slots; | |
224 | } | |
225 | ||
226 | /* | |
227 | * Session related parameters | |
228 | */ | |
229 | struct nfs4_session { | |
230 | struct nfs4_sessionid sess_id; | |
231 | u32 flags; | |
232 | unsigned long session_state; | |
233 | u32 hash_alg; | |
234 | u32 ssv_len; | |
235 | ||
236 | /* The fore and back channel */ | |
237 | struct nfs4_channel_attrs fc_attrs; | |
238 | struct nfs4_slot_table fc_slot_table; | |
239 | struct nfs4_channel_attrs bc_attrs; | |
f8625a6a | 240 | struct nfs4_slot_table bc_slot_table; |
557134a3 AA |
241 | struct nfs_client *clp; |
242 | }; | |
243 | ||
0400a6b0 | 244 | #endif /* CONFIG_NFS_V4 */ |
1da177e4 | 245 | #endif |