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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;
Chuck Leverd9ef5a82006-03-20 13:44:13 -050018
Linus Torvalds1da177e2005-04-16 15:20:36 -070019/*
David Howells24c8dbb2006-08-22 20:06:10 -040020 * The nfs_client identifies our client state to the server.
21 */
22struct nfs_client {
23 atomic_t cl_count;
24 int cl_cons_state; /* current construction state (-ve: init error) */
25#define NFS_CS_READY 0 /* ready to be used */
26#define NFS_CS_INITING 1 /* busy initialising */
Andy Adamson76db6d92009-04-01 09:22:38 -040027#define NFS_CS_SESSION_INITING 2 /* busy initialising session */
David Howells24c8dbb2006-08-22 20:06:10 -040028 unsigned long cl_res_state; /* NFS resources state */
David Howells24c8dbb2006-08-22 20:06:10 -040029#define NFS_CS_CALLBACK 1 /* - callback started */
30#define NFS_CS_IDMAP 2 /* - idmap started */
Trond Myklebust5dd31772006-08-24 01:03:05 -040031#define NFS_CS_RENEWD 3 /* - renewd started */
Chuck Lever6e4cffd2007-12-10 14:58:15 -050032 struct sockaddr_storage cl_addr; /* server identifier */
33 size_t cl_addrlen;
David Howells24c8dbb2006-08-22 20:06:10 -040034 char * cl_hostname; /* hostname of server */
35 struct list_head cl_share_link; /* link in global client list */
36 struct list_head cl_superblocks; /* List of nfs_server structs */
37
38 struct rpc_clnt * cl_rpcclient;
David Howells8fa5c002006-08-22 20:06:12 -040039 const struct nfs_rpc_ops *rpc_ops; /* NFS protocol vector */
Trond Myklebust59dca3b2008-01-03 16:29:06 -050040 int cl_proto; /* Network transport protocol */
David Howells24c8dbb2006-08-22 20:06:10 -040041
Benny Halevy94a417f2009-04-01 09:21:49 -040042 u32 cl_minorversion;/* NFSv4 minorversion */
Trond Myklebust7c67db32008-04-07 20:50:11 -040043 struct rpc_cred *cl_machine_cred;
44
David Howells24c8dbb2006-08-22 20:06:10 -040045#ifdef CONFIG_NFS_V4
46 u64 cl_clientid; /* constant */
47 nfs4_verifier cl_confirm;
48 unsigned long cl_state;
49
Trond Myklebust9f958ab2007-07-02 13:58:33 -040050 struct rb_root cl_openowner_id;
51 struct rb_root cl_lockowner_id;
David Howells24c8dbb2006-08-22 20:06:10 -040052
David Howells24c8dbb2006-08-22 20:06:10 -040053 struct list_head cl_delegations;
Trond Myklebust9f958ab2007-07-02 13:58:33 -040054 struct rb_root cl_state_owners;
David Howells24c8dbb2006-08-22 20:06:10 -040055 spinlock_t cl_lock;
56
57 unsigned long cl_lease_time;
58 unsigned long cl_last_renewal;
David Howells52bad642006-11-22 14:54:01 +000059 struct delayed_work cl_renewd;
David Howells24c8dbb2006-08-22 20:06:10 -040060
61 struct rpc_wait_queue cl_rpcwaitq;
62
63 /* used for the setclientid verifier */
64 struct timespec cl_boot_time;
65
66 /* idmapper */
67 struct idmap * cl_idmap;
68
69 /* Our own IP address, as a null-terminated string.
70 * This is used to generate the clientid, and the callback address.
71 */
Chuck Lever4392f252007-12-10 14:57:01 -050072 char cl_ipaddr[48];
David Howells24c8dbb2006-08-22 20:06:10 -040073 unsigned char cl_id_uniquifier;
Andy Adamsoncccef3b2009-04-01 09:22:03 -040074 int (* cl_call_sync)(struct nfs_server *server,
75 struct rpc_message *msg,
76 struct nfs4_sequence_args *args,
77 struct nfs4_sequence_res *res,
78 int cache_reply);
Benny Halevy94a417f2009-04-01 09:21:49 -040079#endif /* CONFIG_NFS_V4 */
David Howells14727282009-04-03 16:42:42 +010080
Andy Adamson557134a2009-04-01 09:21:53 -040081#ifdef CONFIG_NFS_V4_1
Benny Halevy99fe60d2009-04-01 09:22:29 -040082 /* clientid returned from EXCHANGE_ID, used by session operations */
83 u64 cl_ex_clid;
84 /* The sequence id to use for the next CREATE_SESSION */
85 u32 cl_seqid;
86 /* The flags used for obtaining the clientid during EXCHANGE_ID */
87 u32 cl_exchange_flags;
Andy Adamson557134a2009-04-01 09:21:53 -040088 struct nfs4_session *cl_session; /* sharred session */
89#endif /* CONFIG_NFS_V4_1 */
90
David Howells14727282009-04-03 16:42:42 +010091#ifdef CONFIG_NFS_FSCACHE
92 struct fscache_cookie *fscache; /* client index cache cookie */
93#endif
David Howells24c8dbb2006-08-22 20:06:10 -040094};
95
96/*
Linus Torvalds1da177e2005-04-16 15:20:36 -070097 * NFS client parameters stored in the superblock.
98 */
99struct nfs_server {
David Howells27951bd2006-08-22 20:06:11 -0400100 struct nfs_client * nfs_client; /* shared client and NFS4 state */
David Howells54ceac42006-08-22 20:06:13 -0400101 struct list_head client_link; /* List of other nfs_server structs
102 * that share the same client
103 */
104 struct list_head master_link; /* link in master servers list */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700105 struct rpc_clnt * client; /* RPC client handle */
Andreas Gruenbacherb7fa0552005-06-22 17:16:27 +0000106 struct rpc_clnt * client_acl; /* ACL RPC client handle */
Chuck Lever9289e7f2008-01-11 17:09:52 -0500107 struct nlm_host *nlm_host; /* NLM client handle */
Chuck Leverd9ef5a82006-03-20 13:44:13 -0500108 struct nfs_iostats * io_stats; /* I/O statistics */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109 struct backing_dev_info backing_dev_info;
Peter Zijlstra277866a2007-05-08 00:35:12 -0700110 atomic_long_t writeback; /* number of writeback pages */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700111 int flags; /* various flags */
112 unsigned int caps; /* server capabilities */
113 unsigned int rsize; /* read size */
114 unsigned int rpages; /* read size (in pages) */
115 unsigned int wsize; /* write size */
116 unsigned int wpages; /* write size (in pages) */
117 unsigned int wtmult; /* server disk block size */
118 unsigned int dtsize; /* readdir size */
Chuck Leverf22d6d72008-03-14 14:10:22 -0400119 unsigned short port; /* "port=" setting */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700120 unsigned int bsize; /* server block size */
121 unsigned int acregmin; /* attr cache timeouts */
122 unsigned int acregmax;
123 unsigned int acdirmin;
124 unsigned int acdirmax;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700125 unsigned int namelen;
David Howellsc6a6f192009-04-03 16:42:42 +0100126 unsigned int options; /* extra options enabled by mount */
127#define NFS_OPTION_FSCACHE 0x00000001 /* - local caching enabled */
David Howells54ceac42006-08-22 20:06:13 -0400128
Trond Myklebust8b4bdcf2006-06-09 09:34:19 -0400129 struct nfs_fsid fsid;
David Howells54ceac42006-08-22 20:06:13 -0400130 __u64 maxfilesize; /* maximum file size */
Chuck Lever67ec9f42006-03-20 13:44:15 -0500131 unsigned long mount_time; /* when this fs was mounted */
David Howells54ceac42006-08-22 20:06:13 -0400132 dev_t s_dev; /* superblock dev numbers */
133
David Howells08734042009-04-03 16:42:42 +0100134#ifdef CONFIG_NFS_FSCACHE
135 struct nfs_fscache_key *fscache_key; /* unique key for superblock */
136 struct fscache_cookie *fscache; /* superblock cookie */
137#endif
138
Linus Torvalds1da177e2005-04-16 15:20:36 -0700139#ifdef CONFIG_NFS_V4
Linus Torvalds1da177e2005-04-16 15:20:36 -0700140 u32 attr_bitmask[2];/* V4 bitmask representing the set
141 of attributes supported on this
142 filesystem */
Trond Myklebusta65318b2009-03-11 14:10:28 -0400143 u32 cache_consistency_bitmask[2];
144 /* V4 bitmask representing the subset
145 of change attribute, size, ctime
146 and mtime attributes supported by
147 the server */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148 u32 acl_bitmask; /* V4 bitmask representing the ACEs
149 that are supported on this
150 filesystem */
151#endif
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)
170
Andy Adamson557134a2009-04-01 09:21:53 -0400171
172/* maximum number of slots to use */
173#define NFS4_MAX_SLOT_TABLE RPC_MAX_SLOT_TABLE
174
175#if defined(CONFIG_NFS_V4_1)
176
177/* Sessions */
178#define SLOT_TABLE_SZ (NFS4_MAX_SLOT_TABLE/(8*sizeof(long)))
179struct nfs4_slot_table {
180 struct nfs4_slot *slots; /* seqid per slot */
181 unsigned long used_slots[SLOT_TABLE_SZ]; /* used/unused bitmap */
182 spinlock_t slot_tbl_lock;
183 struct rpc_wait_queue slot_tbl_waitq; /* allocators may wait here */
184 int max_slots; /* # slots in table */
185 int highest_used_slotid; /* sent to server on each SEQ.
186 * op for dynamic resizing */
187};
188
189static inline int slot_idx(struct nfs4_slot_table *tbl, struct nfs4_slot *sp)
190{
191 return sp - tbl->slots;
192}
193
194/*
195 * Session related parameters
196 */
197struct nfs4_session {
198 struct nfs4_sessionid sess_id;
199 u32 flags;
200 unsigned long session_state;
201 u32 hash_alg;
202 u32 ssv_len;
203
204 /* The fore and back channel */
205 struct nfs4_channel_attrs fc_attrs;
206 struct nfs4_slot_table fc_slot_table;
207 struct nfs4_channel_attrs bc_attrs;
Ricardo Labiagaf8625a62009-04-01 09:23:33 -0400208 struct nfs4_slot_table bc_slot_table;
Andy Adamson557134a2009-04-01 09:21:53 -0400209 struct nfs_client *clp;
210};
211
212#endif /* CONFIG_NFS_V4_1 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700213#endif