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Viewing changes to include/linux/nfs_fs_sb.h

  • Committer: Bazaar Package Importer
  • Author(s): Luke Yelavich
  • Date: 2009-08-05 23:00:52 UTC
  • Revision ID: james.westby@ubuntu.com-20090805230052-7xedvqcyk9dnnxb2
Tags: 2.6.31-1.1
New upstream release

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include/linux/nfs_fs_sb.h
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#include <linux/list.h>
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#include <linux/backing-dev.h>
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#include <linux/wait.h>
 
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#include <linux/nfs_xdr.h>
 
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#include <linux/sunrpc/xprt.h>
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#include <asm/atomic.h>
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struct nfs4_session;
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struct nfs_iostats;
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struct nlm_host;
 
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struct nfs4_sequence_args;
 
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struct nfs4_sequence_res;
 
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struct nfs_server;
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/*
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 * The nfs_client identifies our client state to the server.
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        int                     cl_cons_state;  /* current construction state (-ve: init error) */
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#define NFS_CS_READY            0               /* ready to be used */
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#define NFS_CS_INITING          1               /* busy initialising */
 
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#define NFS_CS_SESSION_INITING  2               /* busy initialising  session */
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        unsigned long           cl_res_state;   /* NFS resources state */
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#define NFS_CS_CALLBACK         1               /* - callback started */
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#define NFS_CS_IDMAP            2               /* - idmap started */
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        const struct nfs_rpc_ops *rpc_ops;      /* NFS protocol vector */
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        int                     cl_proto;       /* Network transport protocol */
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        u32                     cl_minorversion;/* NFSv4 minorversion */
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        struct rpc_cred         *cl_machine_cred;
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#ifdef CONFIG_NFS_V4
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         */
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        char                    cl_ipaddr[48];
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        unsigned char           cl_id_uniquifier;
 
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        int                  (* cl_call_sync)(struct nfs_server *server,
 
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                                              struct rpc_message *msg,
 
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                                              struct nfs4_sequence_args *args,
 
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                                              struct nfs4_sequence_res *res,
 
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                                              int cache_reply);
 
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#endif /* CONFIG_NFS_V4 */
 
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#ifdef CONFIG_NFS_V4_1
 
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        /* clientid returned from EXCHANGE_ID, used by session operations */
 
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        u64                     cl_ex_clid;
 
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        /* The sequence id to use for the next CREATE_SESSION */
 
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        u32                     cl_seqid;
 
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        /* The flags used for obtaining the clientid during EXCHANGE_ID */
 
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        u32                     cl_exchange_flags;
 
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        struct nfs4_session     *cl_session;    /* sharred session */
 
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#endif /* CONFIG_NFS_V4_1 */
 
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#ifdef CONFIG_NFS_FSCACHE
 
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        struct fscache_cookie   *fscache;       /* client index cache cookie */
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#endif
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};
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        unsigned int            acdirmin;
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        unsigned int            acdirmax;
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        unsigned int            namelen;
 
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        unsigned int            options;        /* extra options enabled by mount */
 
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#define NFS_OPTION_FSCACHE      0x00000001      /* - local caching enabled */
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        struct nfs_fsid         fsid;
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        __u64                   maxfilesize;    /* maximum file size */
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        unsigned long           mount_time;     /* when this fs was mounted */
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        dev_t                   s_dev;          /* superblock dev numbers */
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#ifdef CONFIG_NFS_FSCACHE
 
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        struct nfs_fscache_key  *fscache_key;   /* unique key for superblock */
 
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        struct fscache_cookie   *fscache;       /* superblock cookie */
 
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#endif
 
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#ifdef CONFIG_NFS_V4
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        u32                     attr_bitmask[2];/* V4 bitmask representing the set
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                                                   of attributes supported on this
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                                                   filesystem */
 
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        u32                     cache_consistency_bitmask[2];
 
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                                                /* V4 bitmask representing the subset
 
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                                                   of change attribute, size, ctime
 
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                                                   and mtime attributes supported by
 
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                                                   the server */
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        u32                     acl_bitmask;    /* V4 bitmask representing the ACEs
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                                                   that are supported on this
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                                                   filesystem */
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#define NFS_CAP_ACLS            (1U << 3)
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#define NFS_CAP_ATOMIC_OPEN     (1U << 4)
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/* maximum number of slots to use */
 
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#define NFS4_MAX_SLOT_TABLE RPC_MAX_SLOT_TABLE
 
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#if defined(CONFIG_NFS_V4_1)
 
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/* Sessions */
 
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#define SLOT_TABLE_SZ (NFS4_MAX_SLOT_TABLE/(8*sizeof(long)))
 
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struct nfs4_slot_table {
 
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        struct nfs4_slot *slots;                /* seqid per slot */
 
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        unsigned long   used_slots[SLOT_TABLE_SZ]; /* used/unused bitmap */
 
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        spinlock_t      slot_tbl_lock;
 
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        struct rpc_wait_queue   slot_tbl_waitq; /* allocators may wait here */
 
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        int             max_slots;              /* # slots in table */
 
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        int             highest_used_slotid;    /* sent to server on each SEQ.
 
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                                                 * op for dynamic resizing */
 
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};
 
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static inline int slot_idx(struct nfs4_slot_table *tbl, struct nfs4_slot *sp)
 
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{
 
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        return sp - tbl->slots;
 
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}
 
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/*
 
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 * Session related parameters
 
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 */
 
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struct nfs4_session {
 
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        struct nfs4_sessionid           sess_id;
 
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        u32                             flags;
 
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        unsigned long                   session_state;
 
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        u32                             hash_alg;
 
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        u32                             ssv_len;
 
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        /* The fore and back channel */
 
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        struct nfs4_channel_attrs       fc_attrs;
 
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        struct nfs4_slot_table          fc_slot_table;
 
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        struct nfs4_channel_attrs       bc_attrs;
 
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        struct nfs4_slot_table          bc_slot_table;
 
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        struct nfs_client               *clp;
 
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};
 
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#endif /* CONFIG_NFS_V4_1 */
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#endif