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Linus Torvalds1da177e2005-04-16 15:20:36 -07001#ifndef _NFS_FS_SB
2#define _NFS_FS_SB
3
4#include <linux/list.h>
5#include <linux/backing-dev.h>
Steve Dicksonef818a22007-11-08 04:05:04 -05006#include <linux/wait.h>
Andy Adamson557134a2009-04-01 09:21:53 -04007#include <linux/nfs_xdr.h>
8#include <linux/sunrpc/xprt.h>
Steve Dicksonef818a22007-11-08 04:05:04 -05009
10#include <asm/atomic.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070011
Andy Adamson557134a2009-04-01 09:21:53 -040012struct nfs4_session;
Chuck Leverd9ef5a82006-03-20 13:44:13 -050013struct nfs_iostats;
Chuck Lever9289e7f2008-01-11 17:09:52 -050014struct nlm_host;
Andy Adamsoncccef3b2009-04-01 09:22:03 -040015struct nfs4_sequence_args;
16struct nfs4_sequence_res;
17struct nfs_server;
Trond Myklebust97dc1352010-06-16 09:52:26 -040018struct nfs4_minor_version_ops;
Chuck Leverd9ef5a82006-03-20 13:44:13 -050019
Linus Torvalds1da177e2005-04-16 15:20:36 -070020/*
David Howells24c8dbb2006-08-22 20:06:10 -040021 * The nfs_client identifies our client state to the server.
22 */
23struct nfs_client {
24 atomic_t cl_count;
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 */
Andy Adamson76db6d92009-04-01 09:22:38 -040028#define NFS_CS_SESSION_INITING 2 /* busy initialising session */
David Howells24c8dbb2006-08-22 20:06:10 -040029 unsigned long cl_res_state; /* NFS resources state */
David Howells24c8dbb2006-08-22 20:06:10 -040030#define NFS_CS_CALLBACK 1 /* - callback started */
31#define NFS_CS_IDMAP 2 /* - idmap started */
Trond Myklebust5dd31772006-08-24 01:03:05 -040032#define NFS_CS_RENEWD 3 /* - renewd started */
Andy Adamsond3b4c9d2011-03-01 01:34:10 +000033#define NFS_CS_STOP_RENEW 4 /* no more state to renew */
Andy Adamsond6fb79d2011-03-01 01:34:11 +000034#define NFS_CS_CHECK_LEASE_TIME 5 /* need to check lease time */
Chuck Lever6e4cffd2007-12-10 14:58:15 -050035 struct sockaddr_storage cl_addr; /* server identifier */
36 size_t cl_addrlen;
David Howells24c8dbb2006-08-22 20:06:10 -040037 char * cl_hostname; /* hostname of server */
38 struct list_head cl_share_link; /* link in global client list */
39 struct list_head cl_superblocks; /* List of nfs_server structs */
40
41 struct rpc_clnt * cl_rpcclient;
David Howells8fa5c002006-08-22 20:06:12 -040042 const struct nfs_rpc_ops *rpc_ops; /* NFS protocol vector */
Trond Myklebust59dca3b2008-01-03 16:29:06 -050043 int cl_proto; /* Network transport protocol */
David Howells24c8dbb2006-08-22 20:06:10 -040044
Benny Halevy94a417f2009-04-01 09:21:49 -040045 u32 cl_minorversion;/* NFSv4 minorversion */
Trond Myklebust7c67db32008-04-07 20:50:11 -040046 struct rpc_cred *cl_machine_cred;
47
David Howells24c8dbb2006-08-22 20:06:10 -040048#ifdef CONFIG_NFS_V4
49 u64 cl_clientid; /* constant */
David Howells24c8dbb2006-08-22 20:06:10 -040050 unsigned long cl_state;
51
David Howells24c8dbb2006-08-22 20:06:10 -040052 spinlock_t cl_lock;
53
54 unsigned long cl_lease_time;
55 unsigned long cl_last_renewal;
David Howells52bad642006-11-22 14:54:01 +000056 struct delayed_work cl_renewd;
David Howells24c8dbb2006-08-22 20:06:10 -040057
58 struct rpc_wait_queue cl_rpcwaitq;
59
60 /* used for the setclientid verifier */
61 struct timespec cl_boot_time;
62
63 /* idmapper */
64 struct idmap * cl_idmap;
65
66 /* Our own IP address, as a null-terminated string.
67 * This is used to generate the clientid, and the callback address.
68 */
Chuck Lever4392f252007-12-10 14:57:01 -050069 char cl_ipaddr[48];
David Howells24c8dbb2006-08-22 20:06:10 -040070 unsigned char cl_id_uniquifier;
Andy Adamsonf4eecd52011-01-06 02:04:30 +000071 u32 cl_cb_ident; /* v4.0 callback identifier */
Trond Myklebust97dc1352010-06-16 09:52:26 -040072 const struct nfs4_minor_version_ops *cl_mvops;
David Howells14727282009-04-03 16:42:42 +010073
Benny Halevy99fe60d2009-04-01 09:22:29 -040074 /* The sequence id to use for the next CREATE_SESSION */
75 u32 cl_seqid;
76 /* The flags used for obtaining the clientid during EXCHANGE_ID */
77 u32 cl_exchange_flags;
Andy Adamson557134a2009-04-01 09:21:53 -040078 struct nfs4_session *cl_session; /* sharred session */
Andy Adamson974cec82010-10-20 00:18:02 -040079 struct list_head cl_layouts;
Trond Myklebust0400a6b2011-03-09 16:00:53 -050080#endif /* CONFIG_NFS_V4 */
Andy Adamson557134a2009-04-01 09:21:53 -040081
David Howells14727282009-04-03 16:42:42 +010082#ifdef CONFIG_NFS_FSCACHE
83 struct fscache_cookie *fscache; /* client index cache cookie */
84#endif
David Howells24c8dbb2006-08-22 20:06:10 -040085};
86
87/*
Linus Torvalds1da177e2005-04-16 15:20:36 -070088 * NFS client parameters stored in the superblock.
89 */
90struct nfs_server {
David Howells27951bd2006-08-22 20:06:11 -040091 struct nfs_client * nfs_client; /* shared client and NFS4 state */
David Howells54ceac42006-08-22 20:06:13 -040092 struct list_head client_link; /* List of other nfs_server structs
93 * that share the same client
94 */
95 struct list_head master_link; /* link in master servers list */
Linus Torvalds1da177e2005-04-16 15:20:36 -070096 struct rpc_clnt * client; /* RPC client handle */
Andreas Gruenbacherb7fa0552005-06-22 17:16:27 +000097 struct rpc_clnt * client_acl; /* ACL RPC client handle */
Chuck Lever9289e7f2008-01-11 17:09:52 -050098 struct nlm_host *nlm_host; /* NLM client handle */
Tejun Heo003cb602010-02-02 14:39:01 +090099 struct nfs_iostats __percpu *io_stats; /* I/O statistics */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700100 struct backing_dev_info backing_dev_info;
Peter Zijlstra277866a2007-05-08 00:35:12 -0700101 atomic_long_t writeback; /* number of writeback pages */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700102 int flags; /* various flags */
103 unsigned int caps; /* server capabilities */
104 unsigned int rsize; /* read size */
105 unsigned int rpages; /* read size (in pages) */
106 unsigned int wsize; /* write size */
107 unsigned int wpages; /* write size (in pages) */
108 unsigned int wtmult; /* server disk block size */
109 unsigned int dtsize; /* readdir size */
Chuck Leverf22d6d72008-03-14 14:10:22 -0400110 unsigned short port; /* "port=" setting */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700111 unsigned int bsize; /* server block size */
112 unsigned int acregmin; /* attr cache timeouts */
113 unsigned int acregmax;
114 unsigned int acdirmin;
115 unsigned int acdirmax;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700116 unsigned int namelen;
David Howellsc6a6f192009-04-03 16:42:42 +0100117 unsigned int options; /* extra options enabled by mount */
118#define NFS_OPTION_FSCACHE 0x00000001 /* - local caching enabled */
David Howells54ceac42006-08-22 20:06:13 -0400119
Trond Myklebust8b4bdcf2006-06-09 09:34:19 -0400120 struct nfs_fsid fsid;
David Howells54ceac42006-08-22 20:06:13 -0400121 __u64 maxfilesize; /* maximum file size */
Ricardo Labiaga6b967242010-10-12 16:30:05 -0700122 struct timespec time_delta; /* smallest time granularity */
Chuck Lever67ec9f42006-03-20 13:44:15 -0500123 unsigned long mount_time; /* when this fs was mounted */
David Howells54ceac42006-08-22 20:06:13 -0400124 dev_t s_dev; /* superblock dev numbers */
125
David Howells08734042009-04-03 16:42:42 +0100126#ifdef CONFIG_NFS_FSCACHE
127 struct nfs_fscache_key *fscache_key; /* unique key for superblock */
128 struct fscache_cookie *fscache; /* superblock cookie */
129#endif
130
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131#ifdef CONFIG_NFS_V4
Linus Torvalds1da177e2005-04-16 15:20:36 -0700132 u32 attr_bitmask[2];/* V4 bitmask representing the set
133 of attributes supported on this
134 filesystem */
Trond Myklebusta65318b2009-03-11 14:10:28 -0400135 u32 cache_consistency_bitmask[2];
136 /* V4 bitmask representing the subset
137 of change attribute, size, ctime
138 and mtime attributes supported by
139 the server */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700140 u32 acl_bitmask; /* V4 bitmask representing the ACEs
141 that are supported on this
142 filesystem */
Ricardo Labiaga85e174b2010-10-20 00:17:58 -0400143 struct pnfs_layoutdriver_type *pnfs_curr_ld; /* Active layout driver */
Fred Isamanf7e89172011-01-06 11:36:32 +0000144 struct rpc_wait_queue roc_rpcwaitq;
Chuck Lever24d292b2010-12-24 01:32:43 +0000145
146 /* the following fields are protected by nfs_client->cl_lock */
147 struct rb_root state_owners;
148 struct rb_root openowner_id;
149 struct rb_root lockowner_id;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150#endif
Chuck Leverd3978bb2010-12-24 01:33:04 +0000151 struct list_head delegations;
David Howells54ceac42006-08-22 20:06:13 -0400152 void (*destroy)(struct nfs_server *);
Steve Dicksonef818a22007-11-08 04:05:04 -0500153
154 atomic_t active; /* Keep trace of any activity to this server */
Chuck Lever3f8400d2008-03-14 14:10:30 -0400155
156 /* mountd-related mount options */
157 struct sockaddr_storage mountd_address;
158 size_t mountd_addrlen;
159 u32 mountd_version;
160 unsigned short mountd_port;
161 unsigned short mountd_protocol;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700162};
163
164/* Server capabilities */
165#define NFS_CAP_READDIRPLUS (1U << 0)
166#define NFS_CAP_HARDLINKS (1U << 1)
167#define NFS_CAP_SYMLINKS (1U << 2)
168#define NFS_CAP_ACLS (1U << 3)
169#define NFS_CAP_ATOMIC_OPEN (1U << 4)
Trond Myklebust62ab460c2009-08-09 15:06:19 -0400170#define NFS_CAP_CHANGE_ATTR (1U << 5)
171#define NFS_CAP_FILEID (1U << 6)
172#define NFS_CAP_MODE (1U << 7)
173#define NFS_CAP_NLINK (1U << 8)
174#define NFS_CAP_OWNER (1U << 9)
175#define NFS_CAP_OWNER_GROUP (1U << 10)
176#define NFS_CAP_ATIME (1U << 11)
177#define NFS_CAP_CTIME (1U << 12)
178#define NFS_CAP_MTIME (1U << 13)
Trond Myklebust0df5dd42010-04-11 16:48:44 -0400179#define NFS_CAP_POSIX_LOCK (1U << 14)
Trond Myklebustb064eca22011-02-22 15:44:32 -0800180#define NFS_CAP_UIDGID_NOMAP (1U << 15)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700181
Andy Adamson557134a2009-04-01 09:21:53 -0400182
183/* maximum number of slots to use */
184#define NFS4_MAX_SLOT_TABLE RPC_MAX_SLOT_TABLE
185
Trond Myklebust0400a6b2011-03-09 16:00:53 -0500186#if defined(CONFIG_NFS_V4)
Andy Adamson557134a2009-04-01 09:21:53 -0400187
188/* Sessions */
189#define SLOT_TABLE_SZ (NFS4_MAX_SLOT_TABLE/(8*sizeof(long)))
190struct nfs4_slot_table {
191 struct nfs4_slot *slots; /* seqid per slot */
192 unsigned long used_slots[SLOT_TABLE_SZ]; /* used/unused bitmap */
193 spinlock_t slot_tbl_lock;
194 struct rpc_wait_queue slot_tbl_waitq; /* allocators may wait here */
195 int max_slots; /* # slots in table */
196 int highest_used_slotid; /* sent to server on each SEQ.
197 * op for dynamic resizing */
Andy Adamsonb9efa1b2010-01-20 16:06:27 -0500198 int target_max_slots; /* Set by CB_RECALL_SLOT as
199 * the new max_slots */
Andy Adamson42acd022011-01-06 02:04:34 +0000200 struct completion complete;
Andy Adamson557134a2009-04-01 09:21:53 -0400201};
202
203static inline int slot_idx(struct nfs4_slot_table *tbl, struct nfs4_slot *sp)
204{
205 return sp - tbl->slots;
206}
207
208/*
209 * Session related parameters
210 */
211struct nfs4_session {
212 struct nfs4_sessionid sess_id;
213 u32 flags;
214 unsigned long session_state;
215 u32 hash_alg;
216 u32 ssv_len;
217
218 /* The fore and back channel */
219 struct nfs4_channel_attrs fc_attrs;
220 struct nfs4_slot_table fc_slot_table;
221 struct nfs4_channel_attrs bc_attrs;
Ricardo Labiagaf8625a62009-04-01 09:23:33 -0400222 struct nfs4_slot_table bc_slot_table;
Andy Adamson557134a2009-04-01 09:21:53 -0400223 struct nfs_client *clp;
224};
225
Trond Myklebust0400a6b2011-03-09 16:00:53 -0500226#endif /* CONFIG_NFS_V4 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700227#endif