2 * per net namespace data structures for nfsd
4 * Copyright (C) 2012, Jeff Layton <jlayton@redhat.com>
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License as published by the Free
8 * Software Foundation; either version 2 of the License, or (at your option)
11 * This program is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
16 * You should have received a copy of the GNU General Public License along with
17 * this program; if not, write to the Free Software Foundation, Inc., 51
18 * Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
21 #ifndef __NFSD_NETNS_H__
22 #define __NFSD_NETNS_H__
24 #include <net/net_namespace.h>
25 #include <net/netns/generic.h>
27 /* Hash tables for nfs4_clientid state */
28 #define CLIENT_HASH_BITS 4
29 #define CLIENT_HASH_SIZE (1 << CLIENT_HASH_BITS)
30 #define CLIENT_HASH_MASK (CLIENT_HASH_SIZE - 1)
32 #define SESSION_HASH_SIZE 512
35 struct nfsd4_client_tracking_ops
;
38 * Represents a nfsd "container". With respect to nfsv4 state tracking, the
39 * fields of interest are the *_id_hashtbls and the *_name_tree. These track
40 * the nfs4_client objects by either short or long form clientid.
42 * Each nfsd_net runs a nfs4_laundromat workqueue job when necessary to clean
43 * up expired clients and delegations within the container.
46 struct cld_net
*cld_net
;
48 struct cache_detail
*svc_expkey_cache
;
49 struct cache_detail
*svc_export_cache
;
51 struct cache_detail
*idtoname_cache
;
52 struct cache_detail
*nametoid_cache
;
54 struct lock_manager nfsd4_manager
;
59 * reclaim_str_hashtbl[] holds known client info from previous reset/reboot
60 * used in reboot/reset lease grace period processing
62 * conf_id_hashtbl[], and conf_name_tree hold confirmed
63 * setclientid_confirmed info.
65 * unconf_str_hastbl[] and unconf_name_tree hold unconfirmed
68 struct list_head
*reclaim_str_hashtbl
;
69 int reclaim_str_hashtbl_size
;
70 struct list_head
*conf_id_hashtbl
;
71 struct rb_root conf_name_tree
;
72 struct list_head
*unconf_id_hashtbl
;
73 struct rb_root unconf_name_tree
;
74 struct list_head
*sessionid_hashtbl
;
76 * client_lru holds client queue ordered by nfs4_client.cl_time
79 * close_lru holds (open) stateowner queue ordered by nfs4_stateowner.so_time
80 * for last close replay.
82 * All of the above fields are protected by the client_mutex.
84 struct list_head client_lru
;
85 struct list_head close_lru
;
86 struct list_head del_recall_lru
;
88 /* protected by blocked_locks_lock */
89 struct list_head blocked_locks_lru
;
91 struct delayed_work laundromat_work
;
93 /* client_lock protects the client lru list and session hash table */
94 spinlock_t client_lock
;
96 /* protects blocked_locks_lru */
97 spinlock_t blocked_locks_lock
;
99 struct file
*rec_file
;
101 const struct nfsd4_client_tracking_ops
*client_tracking_ops
;
109 /* Time of server startup */
110 struct timeval nfssvc_boot
;
113 * Max number of connections this nfsd container will allow. Defaults
114 * to '0' which is means that it bases this on the number of threads.
116 unsigned int max_connections
;
118 u32 clientid_counter
;
119 u32 clverifier_counter
;
121 struct svc_serv
*nfsd_serv
;
124 /* Simple check to find out if a given net was properly initialized */
125 #define nfsd_netns_ready(nn) ((nn)->sessionid_hashtbl)
127 extern unsigned int nfsd_net_id
;
128 #endif /* __NFSD_NETNS_H__ */