| 1 | #ifndef _NFS_FS_SB |
| 2 | #define _NFS_FS_SB |
| 3 | |
| 4 | #include <linux/list.h> |
| 5 | #include <linux/backing-dev.h> |
| 6 | #include <linux/idr.h> |
| 7 | #include <linux/wait.h> |
| 8 | #include <linux/nfs_xdr.h> |
| 9 | #include <linux/sunrpc/xprt.h> |
| 10 | |
| 11 | #include <linux/atomic.h> |
| 12 | |
| 13 | struct nfs4_session; |
| 14 | struct nfs_iostats; |
| 15 | struct nlm_host; |
| 16 | struct nfs4_sequence_args; |
| 17 | struct nfs4_sequence_res; |
| 18 | struct nfs_server; |
| 19 | struct nfs4_minor_version_ops; |
| 20 | struct nfs41_server_scope; |
| 21 | struct nfs41_impl_id; |
| 22 | |
| 23 | /* |
| 24 | * The nfs_client identifies our client state to the server. |
| 25 | */ |
| 26 | struct nfs_client { |
| 27 | atomic_t cl_count; |
| 28 | atomic_t cl_mds_count; |
| 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 */ |
| 32 | #define NFS_CS_SESSION_INITING 2 /* busy initialising session */ |
| 33 | unsigned long cl_res_state; /* NFS resources state */ |
| 34 | #define NFS_CS_CALLBACK 1 /* - callback started */ |
| 35 | #define NFS_CS_IDMAP 2 /* - idmap started */ |
| 36 | #define NFS_CS_RENEWD 3 /* - renewd started */ |
| 37 | #define NFS_CS_STOP_RENEW 4 /* no more state to renew */ |
| 38 | #define NFS_CS_CHECK_LEASE_TIME 5 /* need to check lease time */ |
| 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 */ |
| 42 | struct sockaddr_storage cl_addr; /* server identifier */ |
| 43 | size_t cl_addrlen; |
| 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; |
| 49 | const struct nfs_rpc_ops *rpc_ops; /* NFS protocol vector */ |
| 50 | int cl_proto; /* Network transport protocol */ |
| 51 | |
| 52 | u32 cl_minorversion;/* NFSv4 minorversion */ |
| 53 | struct rpc_cred *cl_machine_cred; |
| 54 | |
| 55 | #ifdef CONFIG_NFS_V4 |
| 56 | u64 cl_clientid; /* constant */ |
| 57 | nfs4_verifier cl_confirm; /* Clientid verifier */ |
| 58 | unsigned long cl_state; |
| 59 | |
| 60 | spinlock_t cl_lock; |
| 61 | |
| 62 | unsigned long cl_lease_time; |
| 63 | unsigned long cl_last_renewal; |
| 64 | struct delayed_work cl_renewd; |
| 65 | |
| 66 | struct rpc_wait_queue cl_rpcwaitq; |
| 67 | |
| 68 | /* idmapper */ |
| 69 | struct idmap * cl_idmap; |
| 70 | |
| 71 | /* Our own IP address, as a null-terminated string. |
| 72 | * This is used to generate the clientid, and the callback address. |
| 73 | */ |
| 74 | char cl_ipaddr[48]; |
| 75 | unsigned char cl_id_uniquifier; |
| 76 | u32 cl_cb_ident; /* v4.0 callback identifier */ |
| 77 | const struct nfs4_minor_version_ops *cl_mvops; |
| 78 | |
| 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; |
| 83 | struct nfs4_session *cl_session; /* shared session */ |
| 84 | struct nfs41_server_owner *cl_serverowner; |
| 85 | struct nfs41_server_scope *cl_serverscope; |
| 86 | struct nfs41_impl_id *cl_implid; |
| 87 | #endif /* CONFIG_NFS_V4 */ |
| 88 | |
| 89 | #ifdef CONFIG_NFS_FSCACHE |
| 90 | struct fscache_cookie *fscache; /* client index cache cookie */ |
| 91 | #endif |
| 92 | |
| 93 | struct net *cl_net; |
| 94 | }; |
| 95 | |
| 96 | /* |
| 97 | * NFS client parameters stored in the superblock. |
| 98 | */ |
| 99 | struct nfs_server { |
| 100 | struct nfs_client * nfs_client; /* shared client and NFS4 state */ |
| 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 */ |
| 105 | struct rpc_clnt * client; /* RPC client handle */ |
| 106 | struct rpc_clnt * client_acl; /* ACL RPC client handle */ |
| 107 | struct nlm_host *nlm_host; /* NLM client handle */ |
| 108 | struct nfs_iostats __percpu *io_stats; /* I/O statistics */ |
| 109 | struct backing_dev_info backing_dev_info; |
| 110 | atomic_long_t writeback; /* number of writeback pages */ |
| 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 */ |
| 119 | unsigned short port; /* "port=" setting */ |
| 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; |
| 126 | unsigned int options; /* extra options enabled by mount */ |
| 127 | #define NFS_OPTION_FSCACHE 0x00000001 /* - local caching enabled */ |
| 128 | |
| 129 | struct nfs_fsid fsid; |
| 130 | __u64 maxfilesize; /* maximum file size */ |
| 131 | struct timespec time_delta; /* smallest time granularity */ |
| 132 | unsigned long mount_time; /* when this fs was mounted */ |
| 133 | dev_t s_dev; /* superblock dev numbers */ |
| 134 | |
| 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 | |
| 140 | u32 pnfs_blksize; /* layout_blksize attr */ |
| 141 | #ifdef CONFIG_NFS_V4 |
| 142 | u32 attr_bitmask[3];/* V4 bitmask representing the set |
| 143 | of attributes supported on this |
| 144 | filesystem */ |
| 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 */ |
| 150 | u32 acl_bitmask; /* V4 bitmask representing the ACEs |
| 151 | that are supported on this |
| 152 | filesystem */ |
| 153 | u32 fh_expire_type; /* V4 bitmask representing file |
| 154 | handle volatility type for |
| 155 | this filesystem */ |
| 156 | struct pnfs_layoutdriver_type *pnfs_curr_ld; /* Active layout driver */ |
| 157 | struct rpc_wait_queue roc_rpcwaitq; |
| 158 | void *pnfs_ld_data; /* per mount point data */ |
| 159 | |
| 160 | /* the following fields are protected by nfs_client->cl_lock */ |
| 161 | struct rb_root state_owners; |
| 162 | #endif |
| 163 | struct ida openowner_id; |
| 164 | struct ida lockowner_id; |
| 165 | struct list_head state_owners_lru; |
| 166 | struct list_head layouts; |
| 167 | struct list_head delegations; |
| 168 | void (*destroy)(struct nfs_server *); |
| 169 | |
| 170 | atomic_t active; /* Keep trace of any activity to this server */ |
| 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; |
| 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) |
| 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) |
| 195 | #define NFS_CAP_POSIX_LOCK (1U << 14) |
| 196 | #define NFS_CAP_UIDGID_NOMAP (1U << 15) |
| 197 | |
| 198 | |
| 199 | /* maximum number of slots to use */ |
| 200 | #define NFS4_DEF_SLOT_TABLE_SIZE (16U) |
| 201 | #define NFS4_MAX_SLOT_TABLE (256U) |
| 202 | #define NFS4_NO_SLOT ((u32)-1) |
| 203 | |
| 204 | #if defined(CONFIG_NFS_V4) |
| 205 | |
| 206 | /* Sessions */ |
| 207 | #define SLOT_TABLE_SZ DIV_ROUND_UP(NFS4_MAX_SLOT_TABLE, 8*sizeof(long)) |
| 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 */ |
| 213 | u32 max_slots; /* # slots in table */ |
| 214 | u32 highest_used_slotid; /* sent to server on each SEQ. |
| 215 | * op for dynamic resizing */ |
| 216 | u32 target_max_slots; /* Set by CB_RECALL_SLOT as |
| 217 | * the new max_slots */ |
| 218 | struct completion complete; |
| 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; |
| 240 | struct nfs4_slot_table bc_slot_table; |
| 241 | struct nfs_client *clp; |
| 242 | }; |
| 243 | |
| 244 | #endif /* CONFIG_NFS_V4 */ |
| 245 | #endif |