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 LOCKOWNER_INO_HASH_BITS 8 33 #define LOCKOWNER_INO_HASH_SIZE (1 << LOCKOWNER_INO_HASH_BITS) 34 35 #define SESSION_HASH_SIZE 512 36 37 struct cld_net; 38 struct nfsd4_client_tracking_ops; 39 40 struct nfsd_net { 41 struct cld_net *cld_net; 42 43 struct cache_detail *svc_expkey_cache; 44 struct cache_detail *svc_export_cache; 45 46 struct cache_detail *idtoname_cache; 47 struct cache_detail *nametoid_cache; 48 49 struct lock_manager nfsd4_manager; 50 bool grace_ended; 51 time_t boot_time; 52 53 /* 54 * reclaim_str_hashtbl[] holds known client info from previous reset/reboot 55 * used in reboot/reset lease grace period processing 56 * 57 * conf_id_hashtbl[], and conf_name_tree hold confirmed 58 * setclientid_confirmed info. 59 * 60 * unconf_str_hastbl[] and unconf_name_tree hold unconfirmed 61 * setclientid info. 62 */ 63 struct list_head *reclaim_str_hashtbl; 64 int reclaim_str_hashtbl_size; 65 struct list_head *conf_id_hashtbl; 66 struct rb_root conf_name_tree; 67 struct list_head *unconf_id_hashtbl; 68 struct rb_root unconf_name_tree; 69 struct list_head *ownerstr_hashtbl; 70 struct list_head *lockowner_ino_hashtbl; 71 struct list_head *sessionid_hashtbl; 72 /* 73 * client_lru holds client queue ordered by nfs4_client.cl_time 74 * for lease renewal. 75 * 76 * close_lru holds (open) stateowner queue ordered by nfs4_stateowner.so_time 77 * for last close replay. 78 * 79 * All of the above fields are protected by the client_mutex. 80 */ 81 struct list_head client_lru; 82 struct list_head close_lru; 83 struct list_head del_recall_lru; 84 85 struct delayed_work laundromat_work; 86 87 /* client_lock protects the client lru list and session hash table */ 88 spinlock_t client_lock; 89 90 struct file *rec_file; 91 bool in_grace; 92 struct nfsd4_client_tracking_ops *client_tracking_ops; 93 94 time_t nfsd4_lease; 95 time_t nfsd4_grace; 96 97 bool nfsd_net_up; 98 99 /* 100 * Time of server startup 101 */ 102 struct timeval nfssvc_boot; 103 104 struct svc_serv *nfsd_serv; 105 }; 106 107 /* Simple check to find out if a given net was properly initialized */ 108 #define nfsd_netns_ready(nn) ((nn)->sessionid_hashtbl) 109 110 extern int nfsd_net_id; 111 #endif /* __NFSD_NETNS_H__ */ 112