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Jeff Layton7ea34ac2012-03-21 09:52:05 -04001/*
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
Stanislav Kinsbursky52e19c02012-11-14 18:21:16 +030027/* 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
Stanislav Kinsbursky1872de02012-11-14 18:21:51 +030032#define SESSION_HASH_SIZE 512
33
Jeff Layton7ea34ac2012-03-21 09:52:05 -040034struct cld_net;
Stanislav Kinsbursky9a9c6472012-12-04 14:29:27 +030035struct nfsd4_client_tracking_ops;
Jeff Layton7ea34ac2012-03-21 09:52:05 -040036
Jeff Layton14a571a2014-08-05 15:13:30 -040037/*
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 */
Jeff Layton7ea34ac2012-03-21 09:52:05 -040045struct nfsd_net {
46 struct cld_net *cld_net;
Stanislav Kinsburskyb3853e02012-04-11 15:13:21 +040047
Stanislav Kinsburskye5f06f72012-04-11 15:13:28 +040048 struct cache_detail *svc_expkey_cache;
Stanislav Kinsburskyb3853e02012-04-11 15:13:21 +040049 struct cache_detail *svc_export_cache;
Stanislav Kinsburskyc2e76ef2012-04-11 17:32:51 +040050
51 struct cache_detail *idtoname_cache;
Stanislav Kinsbursky9e75a4d2012-04-11 17:32:58 +040052 struct cache_detail *nametoid_cache;
Stanislav Kinsbursky5e1533c2012-07-25 16:56:58 +040053
54 struct lock_manager nfsd4_manager;
Stanislav Kinsburskya51c84e2012-07-25 16:57:37 +040055 bool grace_ended;
Stanislav Kinsbursky2c142ba2012-07-25 16:57:45 +040056 time_t boot_time;
Stanislav Kinsbursky52e19c02012-11-14 18:21:16 +030057
58 /*
59 * reclaim_str_hashtbl[] holds known client info from previous reset/reboot
60 * used in reboot/reset lease grace period processing
Stanislav Kinsbursky382a62e2012-11-14 18:21:26 +030061 *
62 * conf_id_hashtbl[], and conf_name_tree hold confirmed
63 * setclientid_confirmed info.
Stanislav Kinsburskya99454a2012-11-14 18:21:36 +030064 *
65 * unconf_str_hastbl[] and unconf_name_tree hold unconfirmed
66 * setclientid info.
Stanislav Kinsbursky52e19c02012-11-14 18:21:16 +030067 */
68 struct list_head *reclaim_str_hashtbl;
69 int reclaim_str_hashtbl_size;
Stanislav Kinsbursky8daae4d2012-11-14 18:21:21 +030070 struct list_head *conf_id_hashtbl;
Stanislav Kinsbursky382a62e2012-11-14 18:21:26 +030071 struct rb_root conf_name_tree;
Stanislav Kinsbursky0a7ec372012-11-14 18:21:31 +030072 struct list_head *unconf_id_hashtbl;
Stanislav Kinsburskya99454a2012-11-14 18:21:36 +030073 struct rb_root unconf_name_tree;
Stanislav Kinsbursky1872de02012-11-14 18:21:51 +030074 struct list_head *sessionid_hashtbl;
Stanislav Kinsbursky5ed58bb2012-11-14 18:21:56 +030075 /*
76 * client_lru holds client queue ordered by nfs4_client.cl_time
77 * for lease renewal.
Stanislav Kinsbursky73758fed2012-11-14 18:22:01 +030078 *
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.
Stanislav Kinsbursky5ed58bb2012-11-14 18:21:56 +030083 */
84 struct list_head client_lru;
Stanislav Kinsbursky73758fed2012-11-14 18:22:01 +030085 struct list_head close_lru;
J. Bruce Fieldse8c69d12013-03-21 15:19:33 -040086 struct list_head del_recall_lru;
Jeff Layton0cc11a62016-10-20 09:34:31 -040087
88 /* protected by blocked_locks_lock */
Jeff Layton7919d0a2016-09-16 16:28:25 -040089 struct list_head blocked_locks_lru;
Stanislav Kinsbursky09121282012-11-14 18:22:17 +030090
91 struct delayed_work laundromat_work;
Stanislav Kinsburskyc9a49622012-11-26 15:21:58 +030092
93 /* client_lock protects the client lru list and session hash table */
94 spinlock_t client_lock;
Stanislav Kinsbursky3a073362012-11-26 16:16:25 +030095
Jeff Layton0cc11a62016-10-20 09:34:31 -040096 /* protects blocked_locks_lru */
97 spinlock_t blocked_locks_lock;
98
Stanislav Kinsbursky3a073362012-11-26 16:16:25 +030099 struct file *rec_file;
Stanislav Kinsburskyf141f792012-11-26 16:16:30 +0300100 bool in_grace;
Julia Lawall7c582e42015-11-22 08:22:10 +0100101 const struct nfsd4_client_tracking_ops *client_tracking_ops;
Stanislav Kinsbursky3d733712012-11-27 14:11:44 +0300102
103 time_t nfsd4_lease;
Stanislav Kinsbursky5284b442012-11-27 14:11:49 +0300104 time_t nfsd4_grace;
Stanislav Kinsbursky2c2fe292012-12-06 14:23:14 +0300105
106 bool nfsd_net_up;
Kinglong Mee8ef66712013-12-31 13:17:30 +0800107 bool lockd_up;
Stanislav Kinsburskyb9c0ef82012-12-06 14:23:19 +0300108
Jeff Layton294ac322014-07-30 08:27:15 -0400109 /* Time of server startup */
Stanislav Kinsburskyb9c0ef82012-12-06 14:23:19 +0300110 struct timeval nfssvc_boot;
Stanislav Kinsbursky9dd98452012-12-06 14:23:24 +0300111
Jeff Layton5b8db002014-07-02 16:11:22 -0400112 /*
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
Jeff Layton294ac322014-07-30 08:27:15 -0400118 u32 clientid_counter;
Kinglong Mee19311aa82015-07-18 07:33:31 +0800119 u32 clverifier_counter;
Jeff Layton294ac322014-07-30 08:27:15 -0400120
Stanislav Kinsbursky9dd98452012-12-06 14:23:24 +0300121 struct svc_serv *nfsd_serv;
Jeff Layton7ea34ac2012-03-21 09:52:05 -0400122};
123
Bryan Schumaker44e34da602012-11-29 11:40:39 -0500124/* Simple check to find out if a given net was properly initialized */
125#define nfsd_netns_ready(nn) ((nn)->sessionid_hashtbl)
126
Jeff Layton7ea34ac2012-03-21 09:52:05 -0400127extern int nfsd_net_id;
Jeff Layton7ea34ac2012-03-21 09:52:05 -0400128#endif /* __NFSD_NETNS_H__ */