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
;
30 u64 cl_clientid
; /* constant */
31 nfs4_verifier cl_confirm
;
32 unsigned long cl_state
;
37 * The following rwsem ensures exclusive access to the server
38 * while we recover the state following a lease expiration.
40 struct rw_semaphore cl_sem
;
42 struct list_head cl_delegations
;
43 struct list_head cl_state_owners
;
44 struct list_head cl_unused
;
48 unsigned long cl_lease_time
;
49 unsigned long cl_last_renewal
;
50 struct work_struct cl_renewd
;
51 struct work_struct cl_recoverd
;
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 rpc_clnt
* client
; /* RPC client handle */
75 struct rpc_clnt
* client_sys
; /* 2nd handle for FSINFO */
76 struct rpc_clnt
* client_acl
; /* ACL RPC client handle */
77 const struct nfs_rpc_ops
*rpc_ops
; /* NFS protocol vector */
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)