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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
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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
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32#define SESSION_HASH_SIZE 512
33
7ea34ac1 34struct cld_net;
9a9c6478 35struct nfsd4_client_tracking_ops;
7ea34ac1 36
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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 */
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45struct nfsd_net {
46 struct cld_net *cld_net;
b3853e0e 47
e5f06f72 48 struct cache_detail *svc_expkey_cache;
b3853e0e 49 struct cache_detail *svc_export_cache;
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50
51 struct cache_detail *idtoname_cache;
9e75a4de 52 struct cache_detail *nametoid_cache;
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53
54 struct lock_manager nfsd4_manager;
a51c84ed 55 bool grace_ended;
2c142baa 56 time_t boot_time;
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57
58 /*
59 * reclaim_str_hashtbl[] holds known client info from previous reset/reboot
60 * used in reboot/reset lease grace period processing
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61 *
62 * conf_id_hashtbl[], and conf_name_tree hold confirmed
63 * setclientid_confirmed info.
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64 *
65 * unconf_str_hastbl[] and unconf_name_tree hold unconfirmed
66 * setclientid info.
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67 */
68 struct list_head *reclaim_str_hashtbl;
69 int reclaim_str_hashtbl_size;
8daae4dc 70 struct list_head *conf_id_hashtbl;
382a62e7 71 struct rb_root conf_name_tree;
0a7ec377 72 struct list_head *unconf_id_hashtbl;
a99454aa 73 struct rb_root unconf_name_tree;
1872de0e 74 struct list_head *sessionid_hashtbl;
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75 /*
76 * client_lru holds client queue ordered by nfs4_client.cl_time
77 * for lease renewal.
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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.
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83 */
84 struct list_head client_lru;
73758fed 85 struct list_head close_lru;
e8c69d17 86 struct list_head del_recall_lru;
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87
88 struct delayed_work laundromat_work;
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89
90 /* client_lock protects the client lru list and session hash table */
91 spinlock_t client_lock;
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92
93 struct file *rec_file;
f141f79d 94 bool in_grace;
9a9c6478 95 struct nfsd4_client_tracking_ops *client_tracking_ops;
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96
97 time_t nfsd4_lease;
5284b44e 98 time_t nfsd4_grace;
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99
100 bool nfsd_net_up;
8ef66714 101 bool lockd_up;
b9c0ef85 102
294ac32e 103 /* Time of server startup */
b9c0ef85 104 struct timeval nfssvc_boot;
9dd9845f 105
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106 /*
107 * Max number of connections this nfsd container will allow. Defaults
108 * to '0' which is means that it bases this on the number of threads.
109 */
110 unsigned int max_connections;
111
294ac32e 112 u32 clientid_counter;
19311aa8 113 u32 clverifier_counter;
294ac32e 114
9dd9845f 115 struct svc_serv *nfsd_serv;
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116};
117
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118/* Simple check to find out if a given net was properly initialized */
119#define nfsd_netns_ready(nn) ((nn)->sessionid_hashtbl)
120
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121extern int nfsd_net_id;
122#endif /* __NFSD_NETNS_H__ */