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 #define NFS_CS_NO_RETRANS_TIMEOUT 4 /* - Disable retransmit timeouts */
45 struct sockaddr_storage cl_addr
; /* server identifier */
47 char * cl_hostname
; /* hostname of server */
48 struct list_head cl_share_link
; /* link in global client list */
49 struct list_head cl_superblocks
; /* List of nfs_server structs */
51 struct rpc_clnt
* cl_rpcclient
;
52 const struct nfs_rpc_ops
*rpc_ops
; /* NFS protocol vector */
53 int cl_proto
; /* Network transport protocol */
54 struct nfs_subversion
* cl_nfs_mod
; /* pointer to nfs version module */
56 u32 cl_minorversion
;/* NFSv4 minorversion */
57 struct rpc_cred
*cl_machine_cred
;
59 #if IS_ENABLED(CONFIG_NFS_V4)
60 struct list_head cl_ds_clients
; /* auth flavor data servers */
61 u64 cl_clientid
; /* constant */
62 nfs4_verifier cl_confirm
; /* Clientid verifier */
63 unsigned long cl_state
;
67 unsigned long cl_lease_time
;
68 unsigned long cl_last_renewal
;
69 struct delayed_work cl_renewd
;
71 struct rpc_wait_queue cl_rpcwaitq
;
74 struct idmap
* cl_idmap
;
76 /* Our own IP address, as a null-terminated string.
77 * This is used to generate the mv0 callback address.
80 u32 cl_cb_ident
; /* v4.0 callback identifier */
81 const struct nfs4_minor_version_ops
*cl_mvops
;
82 unsigned long cl_mig_gen
;
84 /* NFSv4.0 transport blocking */
85 struct nfs4_slot_table
*cl_slot_tbl
;
87 /* The sequence id to use for the next CREATE_SESSION */
89 /* The flags used for obtaining the clientid during EXCHANGE_ID */
90 u32 cl_exchange_flags
;
91 struct nfs4_session
*cl_session
; /* shared session */
92 bool cl_preserve_clid
;
93 struct nfs41_server_owner
*cl_serverowner
;
94 struct nfs41_server_scope
*cl_serverscope
;
95 struct nfs41_impl_id
*cl_implid
;
96 /* nfs 4.1+ state protection modes: */
97 unsigned long cl_sp4_flags
;
98 #define NFS_SP4_MACH_CRED_MINIMAL 1 /* Minimal sp4_mach_cred - state ops
99 * must use machine cred */
100 #define NFS_SP4_MACH_CRED_CLEANUP 2 /* CLOSE and LOCKU */
101 #define NFS_SP4_MACH_CRED_SECINFO 3 /* SECINFO and SECINFO_NO_NAME */
102 #define NFS_SP4_MACH_CRED_STATEID 4 /* TEST_STATEID and FREE_STATEID */
103 #define NFS_SP4_MACH_CRED_WRITE 5 /* WRITE */
104 #define NFS_SP4_MACH_CRED_COMMIT 6 /* COMMIT */
105 #endif /* CONFIG_NFS_V4 */
107 #ifdef CONFIG_NFS_FSCACHE
108 struct fscache_cookie
*fscache
; /* client index cache cookie */
115 * NFS client parameters stored in the superblock.
118 struct nfs_client
* nfs_client
; /* shared client and NFS4 state */
119 struct list_head client_link
; /* List of other nfs_server structs
120 * that share the same client
122 struct list_head master_link
; /* link in master servers list */
123 struct rpc_clnt
* client
; /* RPC client handle */
124 struct rpc_clnt
* client_acl
; /* ACL RPC client handle */
125 struct nlm_host
*nlm_host
; /* NLM client handle */
126 struct nfs_iostats __percpu
*io_stats
; /* I/O statistics */
127 struct backing_dev_info backing_dev_info
;
128 atomic_long_t writeback
; /* number of writeback pages */
129 int flags
; /* various flags */
130 unsigned int caps
; /* server capabilities */
131 unsigned int rsize
; /* read size */
132 unsigned int rpages
; /* read size (in pages) */
133 unsigned int wsize
; /* write size */
134 unsigned int wpages
; /* write size (in pages) */
135 unsigned int wtmult
; /* server disk block size */
136 unsigned int dtsize
; /* readdir size */
137 unsigned short port
; /* "port=" setting */
138 unsigned int bsize
; /* server block size */
139 unsigned int acregmin
; /* attr cache timeouts */
140 unsigned int acregmax
;
141 unsigned int acdirmin
;
142 unsigned int acdirmax
;
143 unsigned int namelen
;
144 unsigned int options
; /* extra options enabled by mount */
145 #define NFS_OPTION_FSCACHE 0x00000001 /* - local caching enabled */
146 #define NFS_OPTION_MIGRATION 0x00000002 /* - NFSv4 migration enabled */
148 struct nfs_fsid fsid
;
149 __u64 maxfilesize
; /* maximum file size */
150 struct timespec time_delta
; /* smallest time granularity */
151 unsigned long mount_time
; /* when this fs was mounted */
152 struct super_block
*super
; /* VFS super block */
153 dev_t s_dev
; /* superblock dev numbers */
154 struct nfs_auth_info auth_info
; /* parsed auth flavors */
156 #ifdef CONFIG_NFS_FSCACHE
157 struct nfs_fscache_key
*fscache_key
; /* unique key for superblock */
158 struct fscache_cookie
*fscache
; /* superblock cookie */
161 u32 pnfs_blksize
; /* layout_blksize attr */
162 #if IS_ENABLED(CONFIG_NFS_V4)
163 u32 attr_bitmask
[3];/* V4 bitmask representing the set
164 of attributes supported on this
166 u32 attr_bitmask_nl
[3];
167 /* V4 bitmask representing the
168 set of attributes supported
169 on this filesystem excluding
170 the label support bit. */
171 u32 cache_consistency_bitmask
[3];
172 /* V4 bitmask representing the subset
173 of change attribute, size, ctime
174 and mtime attributes supported by
176 u32 acl_bitmask
; /* V4 bitmask representing the ACEs
177 that are supported on this
179 u32 fh_expire_type
; /* V4 bitmask representing file
180 handle volatility type for
182 struct pnfs_layoutdriver_type
*pnfs_curr_ld
; /* Active layout driver */
183 struct rpc_wait_queue roc_rpcwaitq
;
184 void *pnfs_ld_data
; /* per mount point data */
186 /* the following fields are protected by nfs_client->cl_lock */
187 struct rb_root state_owners
;
189 struct ida openowner_id
;
190 struct ida lockowner_id
;
191 struct list_head state_owners_lru
;
192 struct list_head layouts
;
193 struct list_head delegations
;
195 unsigned long mig_gen
;
196 unsigned long mig_status
;
197 #define NFS_MIG_IN_TRANSITION (1)
198 #define NFS_MIG_FAILED (2)
200 void (*destroy
)(struct nfs_server
*);
202 atomic_t active
; /* Keep trace of any activity to this server */
204 /* mountd-related mount options */
205 struct sockaddr_storage mountd_address
;
206 size_t mountd_addrlen
;
208 unsigned short mountd_port
;
209 unsigned short mountd_protocol
;
212 /* Server capabilities */
213 #define NFS_CAP_READDIRPLUS (1U << 0)
214 #define NFS_CAP_HARDLINKS (1U << 1)
215 #define NFS_CAP_SYMLINKS (1U << 2)
216 #define NFS_CAP_ACLS (1U << 3)
217 #define NFS_CAP_ATOMIC_OPEN (1U << 4)
218 #define NFS_CAP_CHANGE_ATTR (1U << 5)
219 #define NFS_CAP_FILEID (1U << 6)
220 #define NFS_CAP_MODE (1U << 7)
221 #define NFS_CAP_NLINK (1U << 8)
222 #define NFS_CAP_OWNER (1U << 9)
223 #define NFS_CAP_OWNER_GROUP (1U << 10)
224 #define NFS_CAP_ATIME (1U << 11)
225 #define NFS_CAP_CTIME (1U << 12)
226 #define NFS_CAP_MTIME (1U << 13)
227 #define NFS_CAP_POSIX_LOCK (1U << 14)
228 #define NFS_CAP_UIDGID_NOMAP (1U << 15)
229 #define NFS_CAP_STATEID_NFSV41 (1U << 16)
230 #define NFS_CAP_ATOMIC_OPEN_V1 (1U << 17)
231 #define NFS_CAP_SECURITY_LABEL (1U << 18)