4 #include <linux/list.h>
5 #include <linux/backing-dev.h>
6 #include <linux/wait.h>
7 #include <linux/nfs_xdr.h>
8 #include <linux/sunrpc/xprt.h>
10 #include <asm/atomic.h>
15 struct nfs4_sequence_args
;
16 struct nfs4_sequence_res
;
18 struct nfs4_minor_version_ops
;
21 * The nfs_client identifies our client state to the server.
25 int cl_cons_state
; /* current construction state (-ve: init error) */
26 #define NFS_CS_READY 0 /* ready to be used */
27 #define NFS_CS_INITING 1 /* busy initialising */
28 #define NFS_CS_SESSION_INITING 2 /* busy initialising session */
29 unsigned long cl_res_state
; /* NFS resources state */
30 #define NFS_CS_CALLBACK 1 /* - callback started */
31 #define NFS_CS_IDMAP 2 /* - idmap started */
32 #define NFS_CS_RENEWD 3 /* - renewd started */
33 struct sockaddr_storage cl_addr
; /* server identifier */
35 char * cl_hostname
; /* hostname of server */
36 struct list_head cl_share_link
; /* link in global client list */
37 struct list_head cl_superblocks
; /* List of nfs_server structs */
39 struct rpc_clnt
* cl_rpcclient
;
40 const struct nfs_rpc_ops
*rpc_ops
; /* NFS protocol vector */
41 int cl_proto
; /* Network transport protocol */
43 u32 cl_minorversion
;/* NFSv4 minorversion */
44 struct rpc_cred
*cl_machine_cred
;
47 u64 cl_clientid
; /* constant */
48 unsigned long cl_state
;
52 unsigned long cl_lease_time
;
53 unsigned long cl_last_renewal
;
54 struct delayed_work cl_renewd
;
56 struct rpc_wait_queue cl_rpcwaitq
;
58 /* used for the setclientid verifier */
59 struct timespec cl_boot_time
;
62 struct idmap
* cl_idmap
;
64 /* Our own IP address, as a null-terminated string.
65 * This is used to generate the clientid, and the callback address.
68 unsigned char cl_id_uniquifier
;
69 u32 cl_cb_ident
; /* v4.0 callback identifier */
70 const struct nfs4_minor_version_ops
*cl_mvops
;
72 /* The sequence id to use for the next CREATE_SESSION */
74 /* The flags used for obtaining the clientid during EXCHANGE_ID */
75 u32 cl_exchange_flags
;
76 struct nfs4_session
*cl_session
; /* sharred session */
77 struct list_head cl_layouts
;
78 struct pnfs_deviceid_cache
*cl_devid_cache
; /* pNFS deviceid cache */
79 #endif /* CONFIG_NFS_V4 */
81 #ifdef CONFIG_NFS_FSCACHE
82 struct fscache_cookie
*fscache
; /* client index cache cookie */
87 * NFS client parameters stored in the superblock.
90 struct nfs_client
* nfs_client
; /* shared client and NFS4 state */
91 struct list_head client_link
; /* List of other nfs_server structs
92 * that share the same client
94 struct list_head master_link
; /* link in master servers list */
95 struct rpc_clnt
* client
; /* RPC client handle */
96 struct rpc_clnt
* client_acl
; /* ACL RPC client handle */
97 struct nlm_host
*nlm_host
; /* NLM client handle */
98 struct nfs_iostats __percpu
*io_stats
; /* I/O statistics */
99 struct backing_dev_info backing_dev_info
;
100 atomic_long_t writeback
; /* number of writeback pages */
101 int flags
; /* various flags */
102 unsigned int caps
; /* server capabilities */
103 unsigned int rsize
; /* read size */
104 unsigned int rpages
; /* read size (in pages) */
105 unsigned int wsize
; /* write size */
106 unsigned int wpages
; /* write size (in pages) */
107 unsigned int wtmult
; /* server disk block size */
108 unsigned int dtsize
; /* readdir size */
109 unsigned short port
; /* "port=" setting */
110 unsigned int bsize
; /* server block size */
111 unsigned int acregmin
; /* attr cache timeouts */
112 unsigned int acregmax
;
113 unsigned int acdirmin
;
114 unsigned int acdirmax
;
115 unsigned int namelen
;
116 unsigned int options
; /* extra options enabled by mount */
117 #define NFS_OPTION_FSCACHE 0x00000001 /* - local caching enabled */
119 struct nfs_fsid fsid
;
120 __u64 maxfilesize
; /* maximum file size */
121 struct timespec time_delta
; /* smallest time granularity */
122 unsigned long mount_time
; /* when this fs was mounted */
123 dev_t s_dev
; /* superblock dev numbers */
125 #ifdef CONFIG_NFS_FSCACHE
126 struct nfs_fscache_key
*fscache_key
; /* unique key for superblock */
127 struct fscache_cookie
*fscache
; /* superblock cookie */
131 u32 attr_bitmask
[2];/* V4 bitmask representing the set
132 of attributes supported on this
134 u32 cache_consistency_bitmask
[2];
135 /* V4 bitmask representing the subset
136 of change attribute, size, ctime
137 and mtime attributes supported by
139 u32 acl_bitmask
; /* V4 bitmask representing the ACEs
140 that are supported on this
142 struct pnfs_layoutdriver_type
*pnfs_curr_ld
; /* Active layout driver */
143 struct rpc_wait_queue roc_rpcwaitq
;
145 /* the following fields are protected by nfs_client->cl_lock */
146 struct rb_root state_owners
;
147 struct rb_root openowner_id
;
148 struct rb_root lockowner_id
;
150 struct list_head delegations
;
151 void (*destroy
)(struct nfs_server
*);
153 atomic_t active
; /* Keep trace of any activity to this server */
155 /* mountd-related mount options */
156 struct sockaddr_storage mountd_address
;
157 size_t mountd_addrlen
;
159 unsigned short mountd_port
;
160 unsigned short mountd_protocol
;
163 /* Server capabilities */
164 #define NFS_CAP_READDIRPLUS (1U << 0)
165 #define NFS_CAP_HARDLINKS (1U << 1)
166 #define NFS_CAP_SYMLINKS (1U << 2)
167 #define NFS_CAP_ACLS (1U << 3)
168 #define NFS_CAP_ATOMIC_OPEN (1U << 4)
169 #define NFS_CAP_CHANGE_ATTR (1U << 5)
170 #define NFS_CAP_FILEID (1U << 6)
171 #define NFS_CAP_MODE (1U << 7)
172 #define NFS_CAP_NLINK (1U << 8)
173 #define NFS_CAP_OWNER (1U << 9)
174 #define NFS_CAP_OWNER_GROUP (1U << 10)
175 #define NFS_CAP_ATIME (1U << 11)
176 #define NFS_CAP_CTIME (1U << 12)
177 #define NFS_CAP_MTIME (1U << 13)
178 #define NFS_CAP_POSIX_LOCK (1U << 14)
181 /* maximum number of slots to use */
182 #define NFS4_MAX_SLOT_TABLE RPC_MAX_SLOT_TABLE
184 #if defined(CONFIG_NFS_V4)
187 #define SLOT_TABLE_SZ (NFS4_MAX_SLOT_TABLE/(8*sizeof(long)))
188 struct nfs4_slot_table
{
189 struct nfs4_slot
*slots
; /* seqid per slot */
190 unsigned long used_slots
[SLOT_TABLE_SZ
]; /* used/unused bitmap */
191 spinlock_t slot_tbl_lock
;
192 struct rpc_wait_queue slot_tbl_waitq
; /* allocators may wait here */
193 int max_slots
; /* # slots in table */
194 int highest_used_slotid
; /* sent to server on each SEQ.
195 * op for dynamic resizing */
196 int target_max_slots
; /* Set by CB_RECALL_SLOT as
197 * the new max_slots */
198 struct completion complete
;
201 static inline int slot_idx(struct nfs4_slot_table
*tbl
, struct nfs4_slot
*sp
)
203 return sp
- tbl
->slots
;
207 * Session related parameters
209 struct nfs4_session
{
210 struct nfs4_sessionid sess_id
;
212 unsigned long session_state
;
216 /* The fore and back channel */
217 struct nfs4_channel_attrs fc_attrs
;
218 struct nfs4_slot_table fc_slot_table
;
219 struct nfs4_channel_attrs bc_attrs
;
220 struct nfs4_slot_table bc_slot_table
;
221 struct nfs_client
*clp
;
224 #endif /* CONFIG_NFS_V4 */