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_RPCIOD 0 /* - rpciod started */
20 #define NFS_CS_CALLBACK 1 /* - callback started */
21 #define NFS_CS_IDMAP 2 /* - idmap 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 */
31 u64 cl_clientid; /* constant */
32 nfs4_verifier cl_confirm;
33 unsigned long cl_state;
38 * The following rwsem ensures exclusive access to the server
39 * while we recover the state following a lease expiration.
41 struct rw_semaphore cl_sem;
43 struct list_head cl_delegations;
44 struct list_head cl_state_owners;
45 struct list_head cl_unused;
49 unsigned long cl_lease_time;
50 unsigned long cl_last_renewal;
51 struct work_struct cl_renewd;
52 struct work_struct cl_recoverd;
54 struct rpc_wait_queue cl_rpcwaitq;
56 /* used for the setclientid verifier */
57 struct timespec cl_boot_time;
60 struct idmap * cl_idmap;
62 /* Our own IP address, as a null-terminated string.
63 * This is used to generate the clientid, and the callback address.
66 unsigned char cl_id_uniquifier;
71 * NFS client parameters stored in the superblock.
74 struct nfs_client * nfs_client; /* shared client and NFS4 state */
75 struct rpc_clnt * client; /* RPC client handle */
76 struct rpc_clnt * client_sys; /* 2nd handle for FSINFO */
77 struct rpc_clnt * client_acl; /* ACL RPC client handle */
78 struct nfs_iostats * io_stats; /* I/O statistics */
79 struct backing_dev_info backing_dev_info;
80 int flags; /* various flags */
81 unsigned int caps; /* server capabilities */
82 unsigned int rsize; /* read size */
83 unsigned int rpages; /* read size (in pages) */
84 unsigned int wsize; /* write size */
85 unsigned int wpages; /* write size (in pages) */
86 unsigned int wtmult; /* server disk block size */
87 unsigned int dtsize; /* readdir size */
88 unsigned int bsize; /* server block size */
89 unsigned int acregmin; /* attr cache timeouts */
90 unsigned int acregmax;
91 unsigned int acdirmin;
92 unsigned int acdirmax;
93 unsigned long retrans_timeo; /* retransmit timeout */
94 unsigned int retrans_count; /* number of retransmit tries */
96 char * hostname; /* remote hostname */
98 struct sockaddr_in addr;
100 unsigned long mount_time; /* when this fs was mounted */
102 /* Our own IP address, as a null-terminated string.
103 * This is used to generate the clientid, and the callback address.
107 struct list_head nfs4_siblings; /* List of other nfs_server structs
108 * that share the same clientid
110 u32 attr_bitmask[2];/* V4 bitmask representing the set
111 of attributes supported on this
113 u32 acl_bitmask; /* V4 bitmask representing the ACEs
114 that are supported on this
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)