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 atomic_t cl_mds_count
;
29 int cl_cons_state
; /* current construction state (-ve: init error) */
30 #define NFS_CS_READY 0 /* ready to be used */
31 #define NFS_CS_INITING 1 /* busy initialising */
32 #define NFS_CS_SESSION_INITING 2 /* busy initialising session */
33 unsigned long cl_res_state
; /* NFS resources state */
34 #define NFS_CS_CALLBACK 1 /* - callback started */
35 #define NFS_CS_IDMAP 2 /* - idmap started */
36 #define NFS_CS_RENEWD 3 /* - renewd started */
37 #define NFS_CS_STOP_RENEW 4 /* no more state to renew */
38 #define NFS_CS_CHECK_LEASE_TIME 5 /* need to check lease time */
39 unsigned long cl_flags
; /* behavior switches */
40 #define NFS_CS_NORESVPORT 0 /* - use ephemeral src port */
41 #define NFS_CS_DISCRTRY 1 /* - disconnect on RPC retry */
42 #define NFS_CS_MIGRATION 2 /* - transparent state migr */
43 #define NFS_CS_INFINITE_SLOTS 3 /* - don't limit TCP slots */
44 struct sockaddr_storage cl_addr
; /* server identifier */
46 char * cl_hostname
; /* hostname of server */
47 struct list_head cl_share_link
; /* link in global client list */
48 struct list_head cl_superblocks
; /* List of nfs_server structs */
50 struct rpc_clnt
* cl_rpcclient
;
51 const struct nfs_rpc_ops
*rpc_ops
; /* NFS protocol vector */
52 int cl_proto
; /* Network transport protocol */
53 struct nfs_subversion
* cl_nfs_mod
; /* pointer to nfs version module */
55 u32 cl_minorversion
;/* NFSv4 minorversion */
56 struct rpc_cred
*cl_machine_cred
;
58 #if IS_ENABLED(CONFIG_NFS_V4)
59 u64 cl_clientid
; /* constant */
60 nfs4_verifier cl_confirm
; /* Clientid verifier */
61 unsigned long cl_state
;
65 unsigned long cl_lease_time
;
66 unsigned long cl_last_renewal
;
67 struct delayed_work cl_renewd
;
69 struct rpc_wait_queue cl_rpcwaitq
;
72 struct idmap
* cl_idmap
;
74 /* Our own IP address, as a null-terminated string.
75 * This is used to generate the mv0 callback address.
78 u32 cl_cb_ident
; /* v4.0 callback identifier */
79 const struct nfs4_minor_version_ops
*cl_mvops
;
81 /* The sequence id to use for the next CREATE_SESSION */
83 /* The flags used for obtaining the clientid during EXCHANGE_ID */
84 u32 cl_exchange_flags
;
85 struct nfs4_session
*cl_session
; /* shared session */
86 bool cl_preserve_clid
;
87 struct nfs41_server_owner
*cl_serverowner
;
88 struct nfs41_server_scope
*cl_serverscope
;
89 struct nfs41_impl_id
*cl_implid
;
90 #endif /* CONFIG_NFS_V4 */
92 #ifdef CONFIG_NFS_FSCACHE
93 struct fscache_cookie
*fscache
; /* client index cache cookie */
100 * NFS client parameters stored in the superblock.
103 struct nfs_client
* nfs_client
; /* shared client and NFS4 state */
104 struct list_head client_link
; /* List of other nfs_server structs
105 * that share the same client
107 struct list_head master_link
; /* link in master servers list */
108 struct rpc_clnt
* client
; /* RPC client handle */
109 struct rpc_clnt
* client_acl
; /* ACL RPC client handle */
110 struct nlm_host
*nlm_host
; /* NLM client handle */
111 struct nfs_iostats __percpu
*io_stats
; /* I/O statistics */
112 struct backing_dev_info backing_dev_info
;
113 atomic_long_t writeback
; /* number of writeback pages */
114 int flags
; /* various flags */
115 unsigned int caps
; /* server capabilities */
116 unsigned int rsize
; /* read size */
117 unsigned int rpages
; /* read size (in pages) */
118 unsigned int wsize
; /* write size */
119 unsigned int wpages
; /* write size (in pages) */
120 unsigned int wtmult
; /* server disk block size */
121 unsigned int dtsize
; /* readdir size */
122 unsigned short port
; /* "port=" setting */
123 unsigned int bsize
; /* server block size */
124 unsigned int acregmin
; /* attr cache timeouts */
125 unsigned int acregmax
;
126 unsigned int acdirmin
;
127 unsigned int acdirmax
;
128 unsigned int namelen
;
129 unsigned int options
; /* extra options enabled by mount */
130 #define NFS_OPTION_FSCACHE 0x00000001 /* - local caching enabled */
131 #define NFS_OPTION_MIGRATION 0x00000002 /* - NFSv4 migration enabled */
133 struct nfs_fsid fsid
;
134 __u64 maxfilesize
; /* maximum file size */
135 struct timespec time_delta
; /* smallest time granularity */
136 unsigned long mount_time
; /* when this fs was mounted */
137 dev_t s_dev
; /* superblock dev numbers */
139 #ifdef CONFIG_NFS_FSCACHE
140 struct nfs_fscache_key
*fscache_key
; /* unique key for superblock */
141 struct fscache_cookie
*fscache
; /* superblock cookie */
144 u32 pnfs_blksize
; /* layout_blksize attr */
145 #if IS_ENABLED(CONFIG_NFS_V4)
146 u32 attr_bitmask
[3];/* V4 bitmask representing the set
147 of attributes supported on this
149 u32 attr_bitmask_nl
[3];
150 /* V4 bitmask representing the
151 set of attributes supported
152 on this filesystem excluding
153 the label support bit. */
154 u32 cache_consistency_bitmask
[3];
155 /* V4 bitmask representing the subset
156 of change attribute, size, ctime
157 and mtime attributes supported by
159 u32 acl_bitmask
; /* V4 bitmask representing the ACEs
160 that are supported on this
162 u32 fh_expire_type
; /* V4 bitmask representing file
163 handle volatility type for
165 struct pnfs_layoutdriver_type
*pnfs_curr_ld
; /* Active layout driver */
166 struct rpc_wait_queue roc_rpcwaitq
;
167 void *pnfs_ld_data
; /* per mount point data */
169 /* the following fields are protected by nfs_client->cl_lock */
170 struct rb_root state_owners
;
172 struct ida openowner_id
;
173 struct ida lockowner_id
;
174 struct list_head state_owners_lru
;
175 struct list_head layouts
;
176 struct list_head delegations
;
177 void (*destroy
)(struct nfs_server
*);
179 atomic_t active
; /* Keep trace of any activity to this server */
181 /* mountd-related mount options */
182 struct sockaddr_storage mountd_address
;
183 size_t mountd_addrlen
;
185 unsigned short mountd_port
;
186 unsigned short mountd_protocol
;
189 /* Server capabilities */
190 #define NFS_CAP_READDIRPLUS (1U << 0)
191 #define NFS_CAP_HARDLINKS (1U << 1)
192 #define NFS_CAP_SYMLINKS (1U << 2)
193 #define NFS_CAP_ACLS (1U << 3)
194 #define NFS_CAP_ATOMIC_OPEN (1U << 4)
195 #define NFS_CAP_CHANGE_ATTR (1U << 5)
196 #define NFS_CAP_FILEID (1U << 6)
197 #define NFS_CAP_MODE (1U << 7)
198 #define NFS_CAP_NLINK (1U << 8)
199 #define NFS_CAP_OWNER (1U << 9)
200 #define NFS_CAP_OWNER_GROUP (1U << 10)
201 #define NFS_CAP_ATIME (1U << 11)
202 #define NFS_CAP_CTIME (1U << 12)
203 #define NFS_CAP_MTIME (1U << 13)
204 #define NFS_CAP_POSIX_LOCK (1U << 14)
205 #define NFS_CAP_UIDGID_NOMAP (1U << 15)
206 #define NFS_CAP_STATEID_NFSV41 (1U << 16)
207 #define NFS_CAP_ATOMIC_OPEN_V1 (1U << 17)
208 #define NFS_CAP_SECURITY_LABEL (1U << 18)