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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; |
d9ef5a8c | 15 | |
24c8dbbb DH |
16 | /* |
17 | * The nfs_client identifies our client state to the server. | |
18 | */ | |
19 | struct nfs_client { | |
20 | atomic_t cl_count; | |
21 | int cl_cons_state; /* current construction state (-ve: init error) */ | |
22 | #define NFS_CS_READY 0 /* ready to be used */ | |
23 | #define NFS_CS_INITING 1 /* busy initialising */ | |
24c8dbbb | 24 | unsigned long cl_res_state; /* NFS resources state */ |
24c8dbbb DH |
25 | #define NFS_CS_CALLBACK 1 /* - callback started */ |
26 | #define NFS_CS_IDMAP 2 /* - idmap started */ | |
5dd3177a | 27 | #define NFS_CS_RENEWD 3 /* - renewd started */ |
6e4cffd7 CL |
28 | struct sockaddr_storage cl_addr; /* server identifier */ |
29 | size_t cl_addrlen; | |
24c8dbbb DH |
30 | char * cl_hostname; /* hostname of server */ |
31 | struct list_head cl_share_link; /* link in global client list */ | |
32 | struct list_head cl_superblocks; /* List of nfs_server structs */ | |
33 | ||
34 | struct rpc_clnt * cl_rpcclient; | |
8fa5c000 | 35 | const struct nfs_rpc_ops *rpc_ops; /* NFS protocol vector */ |
59dca3b2 | 36 | int cl_proto; /* Network transport protocol */ |
24c8dbbb | 37 | |
94a417f3 | 38 | u32 cl_minorversion;/* NFSv4 minorversion */ |
7c67db3a TM |
39 | struct rpc_cred *cl_machine_cred; |
40 | ||
24c8dbbb DH |
41 | #ifdef CONFIG_NFS_V4 |
42 | u64 cl_clientid; /* constant */ | |
43 | nfs4_verifier cl_confirm; | |
44 | unsigned long cl_state; | |
45 | ||
9f958ab8 TM |
46 | struct rb_root cl_openowner_id; |
47 | struct rb_root cl_lockowner_id; | |
24c8dbbb | 48 | |
24c8dbbb | 49 | struct list_head cl_delegations; |
9f958ab8 | 50 | struct rb_root cl_state_owners; |
24c8dbbb DH |
51 | spinlock_t cl_lock; |
52 | ||
53 | unsigned long cl_lease_time; | |
54 | unsigned long cl_last_renewal; | |
52bad64d | 55 | struct delayed_work cl_renewd; |
24c8dbbb DH |
56 | |
57 | struct rpc_wait_queue cl_rpcwaitq; | |
58 | ||
59 | /* used for the setclientid verifier */ | |
60 | struct timespec cl_boot_time; | |
61 | ||
62 | /* idmapper */ | |
63 | struct idmap * cl_idmap; | |
64 | ||
65 | /* Our own IP address, as a null-terminated string. | |
66 | * This is used to generate the clientid, and the callback address. | |
67 | */ | |
4392f259 | 68 | char cl_ipaddr[48]; |
24c8dbbb | 69 | unsigned char cl_id_uniquifier; |
94a417f3 | 70 | #endif /* CONFIG_NFS_V4 */ |
14727281 | 71 | |
557134a3 AA |
72 | #ifdef CONFIG_NFS_V4_1 |
73 | struct nfs4_session *cl_session; /* sharred session */ | |
74 | #endif /* CONFIG_NFS_V4_1 */ | |
75 | ||
14727281 DH |
76 | #ifdef CONFIG_NFS_FSCACHE |
77 | struct fscache_cookie *fscache; /* client index cache cookie */ | |
78 | #endif | |
24c8dbbb DH |
79 | }; |
80 | ||
1da177e4 LT |
81 | /* |
82 | * NFS client parameters stored in the superblock. | |
83 | */ | |
84 | struct nfs_server { | |
27951bd2 | 85 | struct nfs_client * nfs_client; /* shared client and NFS4 state */ |
54ceac45 DH |
86 | struct list_head client_link; /* List of other nfs_server structs |
87 | * that share the same client | |
88 | */ | |
89 | struct list_head master_link; /* link in master servers list */ | |
1da177e4 | 90 | struct rpc_clnt * client; /* RPC client handle */ |
b7fa0554 | 91 | struct rpc_clnt * client_acl; /* ACL RPC client handle */ |
9289e7f9 | 92 | struct nlm_host *nlm_host; /* NLM client handle */ |
d9ef5a8c | 93 | struct nfs_iostats * io_stats; /* I/O statistics */ |
1da177e4 | 94 | struct backing_dev_info backing_dev_info; |
277866a0 | 95 | atomic_long_t writeback; /* number of writeback pages */ |
1da177e4 LT |
96 | int flags; /* various flags */ |
97 | unsigned int caps; /* server capabilities */ | |
98 | unsigned int rsize; /* read size */ | |
99 | unsigned int rpages; /* read size (in pages) */ | |
100 | unsigned int wsize; /* write size */ | |
101 | unsigned int wpages; /* write size (in pages) */ | |
102 | unsigned int wtmult; /* server disk block size */ | |
103 | unsigned int dtsize; /* readdir size */ | |
f22d6d79 | 104 | unsigned short port; /* "port=" setting */ |
1da177e4 LT |
105 | unsigned int bsize; /* server block size */ |
106 | unsigned int acregmin; /* attr cache timeouts */ | |
107 | unsigned int acregmax; | |
108 | unsigned int acdirmin; | |
109 | unsigned int acdirmax; | |
110 | unsigned int namelen; | |
c6a6f19e DH |
111 | unsigned int options; /* extra options enabled by mount */ |
112 | #define NFS_OPTION_FSCACHE 0x00000001 /* - local caching enabled */ | |
54ceac45 | 113 | |
8b4bdcf8 | 114 | struct nfs_fsid fsid; |
54ceac45 | 115 | __u64 maxfilesize; /* maximum file size */ |
67ec9f46 | 116 | unsigned long mount_time; /* when this fs was mounted */ |
54ceac45 DH |
117 | dev_t s_dev; /* superblock dev numbers */ |
118 | ||
08734048 DH |
119 | #ifdef CONFIG_NFS_FSCACHE |
120 | struct nfs_fscache_key *fscache_key; /* unique key for superblock */ | |
121 | struct fscache_cookie *fscache; /* superblock cookie */ | |
122 | #endif | |
123 | ||
1da177e4 | 124 | #ifdef CONFIG_NFS_V4 |
1da177e4 LT |
125 | u32 attr_bitmask[2];/* V4 bitmask representing the set |
126 | of attributes supported on this | |
127 | filesystem */ | |
a65318bf TM |
128 | u32 cache_consistency_bitmask[2]; |
129 | /* V4 bitmask representing the subset | |
130 | of change attribute, size, ctime | |
131 | and mtime attributes supported by | |
132 | the server */ | |
1da177e4 LT |
133 | u32 acl_bitmask; /* V4 bitmask representing the ACEs |
134 | that are supported on this | |
135 | filesystem */ | |
136 | #endif | |
54ceac45 | 137 | void (*destroy)(struct nfs_server *); |
ef818a28 SD |
138 | |
139 | atomic_t active; /* Keep trace of any activity to this server */ | |
3f8400d1 CL |
140 | |
141 | /* mountd-related mount options */ | |
142 | struct sockaddr_storage mountd_address; | |
143 | size_t mountd_addrlen; | |
144 | u32 mountd_version; | |
145 | unsigned short mountd_port; | |
146 | unsigned short mountd_protocol; | |
1da177e4 LT |
147 | }; |
148 | ||
149 | /* Server capabilities */ | |
150 | #define NFS_CAP_READDIRPLUS (1U << 0) | |
151 | #define NFS_CAP_HARDLINKS (1U << 1) | |
152 | #define NFS_CAP_SYMLINKS (1U << 2) | |
153 | #define NFS_CAP_ACLS (1U << 3) | |
154 | #define NFS_CAP_ATOMIC_OPEN (1U << 4) | |
155 | ||
557134a3 AA |
156 | |
157 | /* maximum number of slots to use */ | |
158 | #define NFS4_MAX_SLOT_TABLE RPC_MAX_SLOT_TABLE | |
159 | ||
160 | #if defined(CONFIG_NFS_V4_1) | |
161 | ||
162 | /* Sessions */ | |
163 | #define SLOT_TABLE_SZ (NFS4_MAX_SLOT_TABLE/(8*sizeof(long))) | |
164 | struct nfs4_slot_table { | |
165 | struct nfs4_slot *slots; /* seqid per slot */ | |
166 | unsigned long used_slots[SLOT_TABLE_SZ]; /* used/unused bitmap */ | |
167 | spinlock_t slot_tbl_lock; | |
168 | struct rpc_wait_queue slot_tbl_waitq; /* allocators may wait here */ | |
169 | int max_slots; /* # slots in table */ | |
170 | int highest_used_slotid; /* sent to server on each SEQ. | |
171 | * op for dynamic resizing */ | |
172 | }; | |
173 | ||
174 | static inline int slot_idx(struct nfs4_slot_table *tbl, struct nfs4_slot *sp) | |
175 | { | |
176 | return sp - tbl->slots; | |
177 | } | |
178 | ||
179 | /* | |
180 | * Session related parameters | |
181 | */ | |
182 | struct nfs4_session { | |
183 | struct nfs4_sessionid sess_id; | |
184 | u32 flags; | |
185 | unsigned long session_state; | |
186 | u32 hash_alg; | |
187 | u32 ssv_len; | |
188 | ||
189 | /* The fore and back channel */ | |
190 | struct nfs4_channel_attrs fc_attrs; | |
191 | struct nfs4_slot_table fc_slot_table; | |
192 | struct nfs4_channel_attrs bc_attrs; | |
193 | /* back channel has one slot */ | |
194 | struct nfs_client *clp; | |
195 | }; | |
196 | ||
197 | #endif /* CONFIG_NFS_V4_1 */ | |
1da177e4 | 198 | #endif |