4 #include <linux/list.h>
5 #include <linux/backing-dev.h>
6 #include <linux/wait.h>
8 #include <asm/atomic.h>
13 * The nfs_client identifies our client state to the server.
17 int cl_cons_state; /* current construction state (-ve: init error) */
18 #define NFS_CS_READY 0 /* ready to be used */
19 #define NFS_CS_INITING 1 /* busy initialising */
20 unsigned long cl_res_state; /* NFS resources state */
21 #define NFS_CS_CALLBACK 1 /* - callback started */
22 #define NFS_CS_IDMAP 2 /* - idmap started */
23 #define NFS_CS_RENEWD 3 /* - renewd started */
24 struct sockaddr_storage cl_addr; /* server identifier */
26 char * cl_hostname; /* hostname of server */
27 struct list_head cl_share_link; /* link in global client list */
28 struct list_head cl_superblocks; /* List of nfs_server structs */
30 struct rpc_clnt * cl_rpcclient;
31 const struct nfs_rpc_ops *rpc_ops; /* NFS protocol vector */
34 u64 cl_clientid; /* constant */
35 nfs4_verifier cl_confirm;
36 unsigned long cl_state;
38 struct rb_root cl_openowner_id;
39 struct rb_root cl_lockowner_id;
42 * The following rwsem ensures exclusive access to the server
43 * while we recover the state following a lease expiration.
45 struct rw_semaphore cl_sem;
47 struct list_head cl_delegations;
48 struct rb_root cl_state_owners;
51 unsigned long cl_lease_time;
52 unsigned long cl_last_renewal;
53 struct delayed_work cl_renewd;
55 struct rpc_wait_queue cl_rpcwaitq;
57 /* used for the setclientid verifier */
58 struct timespec cl_boot_time;
61 struct idmap * cl_idmap;
63 /* Our own IP address, as a null-terminated string.
64 * This is used to generate the clientid, and the callback address.
67 unsigned char cl_id_uniquifier;
72 * NFS client parameters stored in the superblock.
75 struct nfs_client * nfs_client; /* shared client and NFS4 state */
76 struct list_head client_link; /* List of other nfs_server structs
77 * that share the same client
79 struct list_head master_link; /* link in master servers list */
80 struct rpc_clnt * client; /* RPC client handle */
81 struct rpc_clnt * client_acl; /* ACL RPC client handle */
82 struct nfs_iostats * io_stats; /* I/O statistics */
83 struct backing_dev_info backing_dev_info;
84 atomic_long_t writeback; /* number of writeback pages */
85 int flags; /* various flags */
86 unsigned int caps; /* server capabilities */
87 unsigned int rsize; /* read size */
88 unsigned int rpages; /* read size (in pages) */
89 unsigned int wsize; /* write size */
90 unsigned int wpages; /* write size (in pages) */
91 unsigned int wtmult; /* server disk block size */
92 unsigned int dtsize; /* readdir size */
93 unsigned int bsize; /* server block size */
94 unsigned int acregmin; /* attr cache timeouts */
95 unsigned int acregmax;
96 unsigned int acdirmin;
97 unsigned int acdirmax;
100 struct nfs_fsid fsid;
101 __u64 maxfilesize; /* maximum file size */
102 unsigned long mount_time; /* when this fs was mounted */
103 dev_t s_dev; /* superblock dev numbers */
106 u32 attr_bitmask[2];/* V4 bitmask representing the set
107 of attributes supported on this
109 u32 acl_bitmask; /* V4 bitmask representing the ACEs
110 that are supported on this
113 void (*destroy)(struct nfs_server *);
115 atomic_t active; /* Keep trace of any activity to this server */
116 wait_queue_head_t active_wq; /* Wait for any activity to stop */
119 /* Server capabilities */
120 #define NFS_CAP_READDIRPLUS (1U << 0)
121 #define NFS_CAP_HARDLINKS (1U << 1)
122 #define NFS_CAP_SYMLINKS (1U << 2)
123 #define NFS_CAP_ACLS (1U << 3)
124 #define NFS_CAP_ATOMIC_OPEN (1U << 4)