#ifndef _NFS_FS_SB #define _NFS_FS_SB #include <linux/list.h> #include <linux/backing-dev.h> #include <linux/wait.h> #include <linux/nfs_xdr.h> #include <linux/sunrpc/xprt.h> #include <asm/atomic.h> struct nfs4_session; struct nfs_iostats; struct nlm_host; struct nfs4_sequence_args; struct nfs4_sequence_res; struct nfs_server; /* * The nfs_client identifies our client state to the server. */ struct nfs_client { atomic_t cl_count; int cl_cons_state; /* current construction state (-ve: init error) */ #define NFS_CS_READY 0 /* ready to be used */ #define NFS_CS_INITING 1 /* busy initialising */ #define NFS_CS_SESSION_INITING 2 /* busy initialising session */ unsigned long cl_res_state; /* NFS resources state */ #define NFS_CS_CALLBACK 1 /* - callback started */ #define NFS_CS_IDMAP 2 /* - idmap started */ #define NFS_CS_RENEWD 3 /* - renewd started */ struct sockaddr_storage cl_addr; /* server identifier */ size_t cl_addrlen; char * cl_hostname; /* hostname of server */ struct list_head cl_share_link; /* link in global client list */ struct list_head cl_superblocks; /* List of nfs_server structs */ struct rpc_clnt * cl_rpcclient; const struct nfs_rpc_ops *rpc_ops; /* NFS protocol vector */ int cl_proto; /* Network transport protocol */ u32 cl_minorversion;/* NFSv4 minorversion */ struct rpc_cred *cl_machine_cred; #ifdef CONFIG_NFS_V4 u64 cl_clientid; /* constant */ nfs4_verifier cl_confirm; unsigned long cl_state; struct rb_root cl_openowner_id; struct rb_root cl_lockowner_id; struct list_head cl_delegations; struct rb_root cl_state_owners; spinlock_t cl_lock; unsigned long cl_lease_time; unsigned long cl_last_renewal; struct delayed_work cl_renewd; struct rpc_wait_queue cl_rpcwaitq; /* used for the setclientid verifier */ struct timespec cl_boot_time; /* idmapper */ struct idmap * cl_idmap; /* Our own IP address, as a null-terminated string. * This is used to generate the clientid, and the callback address. */ char cl_ipaddr[48]; unsigned char cl_id_uniquifier; int (* cl_call_sync)(struct nfs_server *server, struct rpc_message *msg, struct nfs4_sequence_args *args, struct nfs4_sequence_res *res, int cache_reply); #endif /* CONFIG_NFS_V4 */ #ifdef CONFIG_NFS_V4_1 /* clientid returned from EXCHANGE_ID, used by session operations */ u64 cl_ex_clid; /* The sequence id to use for the next CREATE_SESSION */ u32 cl_seqid; /* The flags used for obtaining the clientid during EXCHANGE_ID */ u32 cl_exchange_flags; struct nfs4_session *cl_session; /* sharred session */ #endif /* CONFIG_NFS_V4_1 */ #ifdef CONFIG_NFS_FSCACHE struct fscache_cookie *fscache; /* client index cache cookie */ #endif }; /* * NFS client parameters stored in the superblock. */ struct nfs_server { struct nfs_client * nfs_client; /* shared client and NFS4 state */ struct list_head client_link; /* List of other nfs_server structs * that share the same client */ struct list_head master_link; /* link in master servers list */ struct rpc_clnt * client; /* RPC client handle */ struct rpc_clnt * client_acl; /* ACL RPC client handle */ struct nlm_host *nlm_host; /* NLM client handle */ struct nfs_iostats __percpu *io_stats; /* I/O statistics */ struct backing_dev_info backing_dev_info; atomic_long_t writeback; /* number of writeback pages */ int flags; /* various flags */ unsigned int caps; /* server capabilities */ unsigned int rsize; /* read size */ unsigned int rpages; /* read size (in pages) */ unsigned int wsize; /* write size */ unsigned int wpages; /* write size (in pages) */ unsigned int wtmult; /* server disk block size */ unsigned int dtsize; /* readdir size */ unsigned short port; /* "port=" setting */ unsigned int bsize; /* server block size */ unsigned int acregmin; /* attr cache timeouts */ unsigned int acregmax; unsigned int acdirmin; unsigned int acdirmax; unsigned int namelen; unsigned int options; /* extra options enabled by mount */ #define NFS_OPTION_FSCACHE 0x00000001 /* - local caching enabled */ struct nfs_fsid fsid; __u64 maxfilesize; /* maximum file size */ unsigned long mount_time; /* when this fs was mounted */ dev_t s_dev; /* superblock dev numbers */ #ifdef CONFIG_NFS_FSCACHE struct nfs_fscache_key *fscache_key; /* unique key for superblock */ struct fscache_cookie *fscache; /* superblock cookie */ #endif #ifdef CONFIG_NFS_V4 u32 attr_bitmask[2];/* V4 bitmask representing the set of attributes supported on this filesystem */ u32 cache_consistency_bitmask[2]; /* V4 bitmask representing the subset of change attribute, size, ctime and mtime attributes supported by the server */ u32 acl_bitmask; /* V4 bitmask representing the ACEs that are supported on this filesystem */ #endif void (*destroy)(struct nfs_server *); atomic_t active; /* Keep trace of any activity to this server */ /* mountd-related mount options */ struct sockaddr_storage mountd_address; size_t mountd_addrlen; u32 mountd_version; unsigned short mountd_port; unsigned short mountd_protocol; }; /* Server capabilities */ #define NFS_CAP_READDIRPLUS (1U << 0) #define NFS_CAP_HARDLINKS (1U << 1) #define NFS_CAP_SYMLINKS (1U << 2) #define NFS_CAP_ACLS (1U << 3) #define NFS_CAP_ATOMIC_OPEN (1U << 4) #define NFS_CAP_CHANGE_ATTR (1U << 5) #define NFS_CAP_FILEID (1U << 6) #define NFS_CAP_MODE (1U << 7) #define NFS_CAP_NLINK (1U << 8) #define NFS_CAP_OWNER (1U << 9) #define NFS_CAP_OWNER_GROUP (1U << 10) #define NFS_CAP_ATIME (1U << 11) #define NFS_CAP_CTIME (1U << 12) #define NFS_CAP_MTIME (1U << 13) #define NFS_CAP_POSIX_LOCK (1U << 14) /* maximum number of slots to use */ #define NFS4_MAX_SLOT_TABLE RPC_MAX_SLOT_TABLE #if defined(CONFIG_NFS_V4_1) /* Sessions */ #define SLOT_TABLE_SZ (NFS4_MAX_SLOT_TABLE/(8*sizeof(long))) struct nfs4_slot_table { struct nfs4_slot *slots; /* seqid per slot */ unsigned long used_slots[SLOT_TABLE_SZ]; /* used/unused bitmap */ spinlock_t slot_tbl_lock; struct rpc_wait_queue slot_tbl_waitq; /* allocators may wait here */ int max_slots; /* # slots in table */ int highest_used_slotid; /* sent to server on each SEQ. * op for dynamic resizing */ int target_max_slots; /* Set by CB_RECALL_SLOT as * the new max_slots */ }; static inline int slot_idx(struct nfs4_slot_table *tbl, struct nfs4_slot *sp) { return sp - tbl->slots; } /* * Session related parameters */ struct nfs4_session { struct nfs4_sessionid sess_id; u32 flags; unsigned long session_state; u32 hash_alg; u32 ssv_len; struct completion complete; /* The fore and back channel */ struct nfs4_channel_attrs fc_attrs; struct nfs4_slot_table fc_slot_table; struct nfs4_channel_attrs bc_attrs; struct nfs4_slot_table bc_slot_table; struct nfs_client *clp; }; #endif /* CONFIG_NFS_V4_1 */ #endif