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1/*
2 * per net namespace data structures for nfsd
3 *
4 * Copyright (C) 2012, Jeff Layton <jlayton@redhat.com>
5 *
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)
9 * any later version.
10 *
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
14 * more details.
15 *
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.
19 */
20
21#ifndef __NFSD_NETNS_H__
22#define __NFSD_NETNS_H__
23
24#include <net/net_namespace.h>
25#include <net/netns/generic.h>
26
27struct cld_net;
28
29struct nfsd_net {
30 struct cld_net *cld_net;
31
32 struct cache_detail *svc_expkey_cache;
33 struct cache_detail *svc_export_cache;
34
35 struct cache_detail *idtoname_cache;
36 struct cache_detail *nametoid_cache;
37};
38
39extern int nfsd_net_id;
40#endif /* __NFSD_NETNS_H__ */
1/*
2 * per net namespace data structures for nfsd
3 *
4 * Copyright (C) 2012, Jeff Layton <jlayton@redhat.com>
5 *
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)
9 * any later version.
10 *
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
14 * more details.
15 *
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.
19 */
20
21#ifndef __NFSD_NETNS_H__
22#define __NFSD_NETNS_H__
23
24#include <net/net_namespace.h>
25#include <net/netns/generic.h>
26
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)
31
32#define SESSION_HASH_SIZE 512
33
34struct cld_net;
35struct nfsd4_client_tracking_ops;
36
37/*
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.
41 *
42 * Each nfsd_net runs a nfs4_laundromat workqueue job when necessary to clean
43 * up expired clients and delegations within the container.
44 */
45struct nfsd_net {
46 struct cld_net *cld_net;
47
48 struct cache_detail *svc_expkey_cache;
49 struct cache_detail *svc_export_cache;
50
51 struct cache_detail *idtoname_cache;
52 struct cache_detail *nametoid_cache;
53
54 struct lock_manager nfsd4_manager;
55 bool grace_ended;
56 time_t boot_time;
57
58 /*
59 * reclaim_str_hashtbl[] holds known client info from previous reset/reboot
60 * used in reboot/reset lease grace period processing
61 *
62 * conf_id_hashtbl[], and conf_name_tree hold confirmed
63 * setclientid_confirmed info.
64 *
65 * unconf_str_hastbl[] and unconf_name_tree hold unconfirmed
66 * setclientid info.
67 */
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;
75 /*
76 * client_lru holds client queue ordered by nfs4_client.cl_time
77 * for lease renewal.
78 *
79 * close_lru holds (open) stateowner queue ordered by nfs4_stateowner.so_time
80 * for last close replay.
81 *
82 * All of the above fields are protected by the client_mutex.
83 */
84 struct list_head client_lru;
85 struct list_head close_lru;
86 struct list_head del_recall_lru;
87
88 /* protected by blocked_locks_lock */
89 struct list_head blocked_locks_lru;
90
91 struct delayed_work laundromat_work;
92
93 /* client_lock protects the client lru list and session hash table */
94 spinlock_t client_lock;
95
96 /* protects blocked_locks_lru */
97 spinlock_t blocked_locks_lock;
98
99 struct file *rec_file;
100 bool in_grace;
101 const struct nfsd4_client_tracking_ops *client_tracking_ops;
102
103 time_t nfsd4_lease;
104 time_t nfsd4_grace;
105
106 bool nfsd_net_up;
107 bool lockd_up;
108
109 /* Time of server startup */
110 struct timeval nfssvc_boot;
111
112 /*
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.
115 */
116 unsigned int max_connections;
117
118 u32 clientid_counter;
119 u32 clverifier_counter;
120
121 struct svc_serv *nfsd_serv;
122};
123
124/* Simple check to find out if a given net was properly initialized */
125#define nfsd_netns_ready(nn) ((nn)->sessionid_hashtbl)
126
127extern unsigned int nfsd_net_id;
128#endif /* __NFSD_NETNS_H__ */