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#ifndef _NFS_FS_SB

#define _NFS_FS_SB

#include <linux/list.h>

#include <linux/backing-dev.h>

struct nfs_iostats;

/*

 * 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 */

        int                     cl_nfsversion;  /* NFS protocol version */

        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_in      cl_addr;        /* server identifier */

        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 */

        unsigned long           retrans_timeo;  /* retransmit timeout */

        unsigned int            retrans_count;  /* number of retransmit tries */

#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;

        /*

         * The following rwsem ensures exclusive access to the server

         * while we recover the state following a lease expiration.

         */

        struct rw_semaphore     cl_sem;

        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[16];

        unsigned char           cl_id_uniquifier;

#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 nfs_iostats *    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 int            bsize;          /* server block size */

        unsigned int            acregmin;       /* attr cache timeouts */

        unsigned int            acregmax;

        unsigned int            acdirmin;

        unsigned int            acdirmax;

        unsigned int            namelen;

        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_V4

        u32                     attr_bitmask[2];/* V4 bitmask representing the set

                                                   of attributes supported on this

                                                   filesystem */

        u32                     acl_bitmask;    /* V4 bitmask representing the ACEs

                                                   that are supported on this

                                                   filesystem */

#endif

        void (*destroy)(struct nfs_server *);

};

/* 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)

#endif