4 #include <linux/list.h>
5 #include <linux/backing-dev.h>
7 #include <linux/wait.h>
8 #include <linux/nfs_xdr.h>
9 #include <linux/sunrpc/xprt.h>
11 #include <linux/atomic.h>
16 struct nfs4_sequence_args
;
17 struct nfs4_sequence_res
;
19 struct nfs4_minor_version_ops
;
20 struct nfs41_server_scope
;
24 * The nfs_client identifies our client state to the server.
28 int cl_cons_state
; /* current construction state (-ve: init error) */
29 #define NFS_CS_READY 0 /* ready to be used */
30 #define NFS_CS_INITING 1 /* busy initialising */
31 #define NFS_CS_SESSION_INITING 2 /* busy initialising session */
32 unsigned long cl_res_state
; /* NFS resources state */
33 #define NFS_CS_CALLBACK 1 /* - callback started */
34 #define NFS_CS_IDMAP 2 /* - idmap started */
35 #define NFS_CS_RENEWD 3 /* - renewd started */
36 #define NFS_CS_STOP_RENEW 4 /* no more state to renew */
37 #define NFS_CS_CHECK_LEASE_TIME 5 /* need to check lease time */
38 unsigned long cl_flags
; /* behavior switches */
39 #define NFS_CS_NORESVPORT 0 /* - use ephemeral src port */
40 #define NFS_CS_DISCRTRY 1 /* - disconnect on RPC retry */
41 struct sockaddr_storage cl_addr
; /* server identifier */
43 char * cl_hostname
; /* hostname of server */
44 struct list_head cl_share_link
; /* link in global client list */
45 struct list_head cl_superblocks
; /* List of nfs_server structs */
47 struct rpc_clnt
* cl_rpcclient
;
48 const struct nfs_rpc_ops
*rpc_ops
; /* NFS protocol vector */
49 int cl_proto
; /* Network transport protocol */
51 u32 cl_minorversion
;/* NFSv4 minorversion */
52 struct rpc_cred
*cl_machine_cred
;
55 u64 cl_clientid
; /* constant */
56 nfs4_verifier cl_confirm
; /* Clientid verifier */
57 unsigned long cl_state
;
61 unsigned long cl_lease_time
;
62 unsigned long cl_last_renewal
;
63 struct delayed_work cl_renewd
;
65 struct rpc_wait_queue cl_rpcwaitq
;
68 struct idmap
* cl_idmap
;
70 /* Our own IP address, as a null-terminated string.
71 * This is used to generate the clientid, and the callback address.
74 unsigned char cl_id_uniquifier
;
75 u32 cl_cb_ident
; /* v4.0 callback identifier */
76 const struct nfs4_minor_version_ops
*cl_mvops
;
78 /* The sequence id to use for the next CREATE_SESSION */
80 /* The flags used for obtaining the clientid during EXCHANGE_ID */
81 u32 cl_exchange_flags
;
82 struct nfs4_session
*cl_session
; /* shared session */
83 struct nfs41_server_owner
*cl_serverowner
;
84 struct nfs41_server_scope
*cl_serverscope
;
85 struct nfs41_impl_id
*cl_implid
;
86 #endif /* CONFIG_NFS_V4 */
88 #ifdef CONFIG_NFS_FSCACHE
89 struct fscache_cookie
*fscache
; /* client index cache cookie */
96 * NFS client parameters stored in the superblock.
99 struct nfs_client
* nfs_client
; /* shared client and NFS4 state */
100 struct list_head client_link
; /* List of other nfs_server structs
101 * that share the same client
103 struct list_head master_link
; /* link in master servers list */
104 struct rpc_clnt
* client
; /* RPC client handle */
105 struct rpc_clnt
* client_acl
; /* ACL RPC client handle */
106 struct nlm_host
*nlm_host
; /* NLM client handle */
107 struct nfs_iostats __percpu
*io_stats
; /* I/O statistics */
108 struct backing_dev_info backing_dev_info
;
109 atomic_long_t writeback
; /* number of writeback pages */
110 int flags
; /* various flags */
111 unsigned int caps
; /* server capabilities */
112 unsigned int rsize
; /* read size */
113 unsigned int rpages
; /* read size (in pages) */
114 unsigned int wsize
; /* write size */
115 unsigned int wpages
; /* write size (in pages) */
116 unsigned int wtmult
; /* server disk block size */
117 unsigned int dtsize
; /* readdir size */
118 unsigned short port
; /* "port=" setting */
119 unsigned int bsize
; /* server block size */
120 unsigned int acregmin
; /* attr cache timeouts */
121 unsigned int acregmax
;
122 unsigned int acdirmin
;
123 unsigned int acdirmax
;
124 unsigned int namelen
;
125 unsigned int options
; /* extra options enabled by mount */
126 #define NFS_OPTION_FSCACHE 0x00000001 /* - local caching enabled */
128 struct nfs_fsid fsid
;
129 __u64 maxfilesize
; /* maximum file size */
130 struct timespec time_delta
; /* smallest time granularity */
131 unsigned long mount_time
; /* when this fs was mounted */
132 dev_t s_dev
; /* superblock dev numbers */
134 #ifdef CONFIG_NFS_FSCACHE
135 struct nfs_fscache_key
*fscache_key
; /* unique key for superblock */
136 struct fscache_cookie
*fscache
; /* superblock cookie */
139 u32 pnfs_blksize
; /* layout_blksize attr */
141 u32 attr_bitmask
[3];/* V4 bitmask representing the set
142 of attributes supported on this
144 u32 cache_consistency_bitmask
[2];
145 /* V4 bitmask representing the subset
146 of change attribute, size, ctime
147 and mtime attributes supported by
149 u32 acl_bitmask
; /* V4 bitmask representing the ACEs
150 that are supported on this
152 u32 fh_expire_type
; /* V4 bitmask representing file
153 handle volatility type for
155 struct pnfs_layoutdriver_type
*pnfs_curr_ld
; /* Active layout driver */
156 struct rpc_wait_queue roc_rpcwaitq
;
157 void *pnfs_ld_data
; /* per mount point data */
159 /* the following fields are protected by nfs_client->cl_lock */
160 struct rb_root state_owners
;
162 struct ida openowner_id
;
163 struct ida lockowner_id
;
164 struct list_head state_owners_lru
;
165 struct list_head layouts
;
166 struct list_head delegations
;
167 void (*destroy
)(struct nfs_server
*);
169 atomic_t active
; /* Keep trace of any activity to this server */
171 /* mountd-related mount options */
172 struct sockaddr_storage mountd_address
;
173 size_t mountd_addrlen
;
175 unsigned short mountd_port
;
176 unsigned short mountd_protocol
;
179 /* Server capabilities */
180 #define NFS_CAP_READDIRPLUS (1U << 0)
181 #define NFS_CAP_HARDLINKS (1U << 1)
182 #define NFS_CAP_SYMLINKS (1U << 2)
183 #define NFS_CAP_ACLS (1U << 3)
184 #define NFS_CAP_ATOMIC_OPEN (1U << 4)
185 #define NFS_CAP_CHANGE_ATTR (1U << 5)
186 #define NFS_CAP_FILEID (1U << 6)
187 #define NFS_CAP_MODE (1U << 7)
188 #define NFS_CAP_NLINK (1U << 8)
189 #define NFS_CAP_OWNER (1U << 9)
190 #define NFS_CAP_OWNER_GROUP (1U << 10)
191 #define NFS_CAP_ATIME (1U << 11)
192 #define NFS_CAP_CTIME (1U << 12)
193 #define NFS_CAP_MTIME (1U << 13)
194 #define NFS_CAP_POSIX_LOCK (1U << 14)
195 #define NFS_CAP_UIDGID_NOMAP (1U << 15)
198 /* maximum number of slots to use */
199 #define NFS4_DEF_SLOT_TABLE_SIZE (16U)
200 #define NFS4_MAX_SLOT_TABLE (256U)
201 #define NFS4_NO_SLOT ((u32)-1)
203 #if defined(CONFIG_NFS_V4)
206 #define SLOT_TABLE_SZ DIV_ROUND_UP(NFS4_MAX_SLOT_TABLE, 8*sizeof(long))
207 struct nfs4_slot_table
{
208 struct nfs4_slot
*slots
; /* seqid per slot */
209 unsigned long used_slots
[SLOT_TABLE_SZ
]; /* used/unused bitmap */
210 spinlock_t slot_tbl_lock
;
211 struct rpc_wait_queue slot_tbl_waitq
; /* allocators may wait here */
212 u32 max_slots
; /* # slots in table */
213 u32 highest_used_slotid
; /* sent to server on each SEQ.
214 * op for dynamic resizing */
215 u32 target_max_slots
; /* Set by CB_RECALL_SLOT as
216 * the new max_slots */
217 struct completion complete
;
220 static inline int slot_idx(struct nfs4_slot_table
*tbl
, struct nfs4_slot
*sp
)
222 return sp
- tbl
->slots
;
226 * Session related parameters
228 struct nfs4_session
{
229 struct nfs4_sessionid sess_id
;
231 unsigned long session_state
;
235 /* The fore and back channel */
236 struct nfs4_channel_attrs fc_attrs
;
237 struct nfs4_slot_table fc_slot_table
;
238 struct nfs4_channel_attrs bc_attrs
;
239 struct nfs4_slot_table bc_slot_table
;
240 struct nfs_client
*clp
;
243 #endif /* CONFIG_NFS_V4 */