4 #include <linux/list.h>
5 #include <linux/backing-dev.h>
10 * The nfs_client identifies our client state to the server.
14 int cl_cons_state; /* current construction state (-ve: init error) */
15 #define NFS_CS_READY 0 /* ready to be used */
16 #define NFS_CS_INITING 1 /* busy initialising */
17 int cl_nfsversion; /* NFS protocol version */
18 unsigned long cl_res_state; /* NFS resources state */
19 #define NFS_CS_CALLBACK 1 /* - callback started */
20 #define NFS_CS_IDMAP 2 /* - idmap started */
21 #define NFS_CS_RENEWD 3 /* - renewd started */
22 struct sockaddr_in cl_addr; /* server identifier */
23 char * cl_hostname; /* hostname of server */
24 struct list_head cl_share_link; /* link in global client list */
25 struct list_head cl_superblocks; /* List of nfs_server structs */
27 struct rpc_clnt * cl_rpcclient;
28 const struct nfs_rpc_ops *rpc_ops; /* NFS protocol vector */
29 unsigned long retrans_timeo; /* retransmit timeout */
30 unsigned int retrans_count; /* number of retransmit tries */
33 u64 cl_clientid; /* constant */
34 nfs4_verifier cl_confirm;
35 unsigned long cl_state;
40 * The following rwsem ensures exclusive access to the server
41 * while we recover the state following a lease expiration.
43 struct rw_semaphore cl_sem;
45 struct list_head cl_delegations;
46 struct list_head cl_state_owners;
49 unsigned long cl_lease_time;
50 unsigned long cl_last_renewal;
51 struct delayed_work cl_renewd;
53 struct rpc_wait_queue cl_rpcwaitq;
55 /* used for the setclientid verifier */
56 struct timespec cl_boot_time;
59 struct idmap * cl_idmap;
61 /* Our own IP address, as a null-terminated string.
62 * This is used to generate the clientid, and the callback address.
65 unsigned char cl_id_uniquifier;
70 * NFS client parameters stored in the superblock.
73 struct nfs_client * nfs_client; /* shared client and NFS4 state */
74 struct list_head client_link; /* List of other nfs_server structs
75 * that share the same client
77 struct list_head master_link; /* link in master servers list */
78 struct rpc_clnt * client; /* RPC client handle */
79 struct rpc_clnt * client_acl; /* ACL RPC client handle */
80 struct nfs_iostats * io_stats; /* I/O statistics */
81 struct backing_dev_info backing_dev_info;
82 atomic_long_t writeback; /* number of writeback pages */
83 int flags; /* various flags */
84 unsigned int caps; /* server capabilities */
85 unsigned int rsize; /* read size */
86 unsigned int rpages; /* read size (in pages) */
87 unsigned int wsize; /* write size */
88 unsigned int wpages; /* write size (in pages) */
89 unsigned int wtmult; /* server disk block size */
90 unsigned int dtsize; /* readdir size */
91 unsigned int bsize; /* server block size */
92 unsigned int acregmin; /* attr cache timeouts */
93 unsigned int acregmax;
94 unsigned int acdirmin;
95 unsigned int acdirmax;
99 __u64 maxfilesize; /* maximum file size */
100 unsigned long mount_time; /* when this fs was mounted */
101 dev_t s_dev; /* superblock dev numbers */
104 u32 attr_bitmask[2];/* V4 bitmask representing the set
105 of attributes supported on this
107 u32 acl_bitmask; /* V4 bitmask representing the ACEs
108 that are supported on this
111 void (*destroy)(struct nfs_server *);
114 /* Server capabilities */
115 #define NFS_CAP_READDIRPLUS (1U << 0)
116 #define NFS_CAP_HARDLINKS (1U << 1)
117 #define NFS_CAP_SYMLINKS (1U << 2)
118 #define NFS_CAP_ACLS (1U << 3)
119 #define NFS_CAP_ATOMIC_OPEN (1U << 4)