1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * per net namespace data structures for nfsd
8 #ifndef __NFSD_NETNS_H__
9 #define __NFSD_NETNS_H__
11 #include <net/net_namespace.h>
12 #include <net/netns/generic.h>
14 /* Hash tables for nfs4_clientid state */
15 #define CLIENT_HASH_BITS 4
16 #define CLIENT_HASH_SIZE (1 << CLIENT_HASH_BITS)
17 #define CLIENT_HASH_MASK (CLIENT_HASH_SIZE - 1)
19 #define SESSION_HASH_SIZE 512
22 struct nfsd4_client_tracking_ops;
25 * Represents a nfsd "container". With respect to nfsv4 state tracking, the
26 * fields of interest are the *_id_hashtbls and the *_name_tree. These track
27 * the nfs4_client objects by either short or long form clientid.
29 * Each nfsd_net runs a nfs4_laundromat workqueue job when necessary to clean
30 * up expired clients and delegations within the container.
33 struct cld_net *cld_net;
35 struct cache_detail *svc_expkey_cache;
36 struct cache_detail *svc_export_cache;
38 struct cache_detail *idtoname_cache;
39 struct cache_detail *nametoid_cache;
41 struct lock_manager nfsd4_manager;
46 * reclaim_str_hashtbl[] holds known client info from previous reset/reboot
47 * used in reboot/reset lease grace period processing
49 * conf_id_hashtbl[], and conf_name_tree hold confirmed
50 * setclientid_confirmed info.
52 * unconf_str_hastbl[] and unconf_name_tree hold unconfirmed
55 struct list_head *reclaim_str_hashtbl;
56 int reclaim_str_hashtbl_size;
57 struct list_head *conf_id_hashtbl;
58 struct rb_root conf_name_tree;
59 struct list_head *unconf_id_hashtbl;
60 struct rb_root unconf_name_tree;
61 struct list_head *sessionid_hashtbl;
63 * client_lru holds client queue ordered by nfs4_client.cl_time
66 * close_lru holds (open) stateowner queue ordered by nfs4_stateowner.so_time
67 * for last close replay.
69 * All of the above fields are protected by the client_mutex.
71 struct list_head client_lru;
72 struct list_head close_lru;
73 struct list_head del_recall_lru;
75 /* protected by blocked_locks_lock */
76 struct list_head blocked_locks_lru;
78 struct delayed_work laundromat_work;
80 /* client_lock protects the client lru list and session hash table */
81 spinlock_t client_lock;
83 /* protects blocked_locks_lru */
84 spinlock_t blocked_locks_lock;
86 struct file *rec_file;
88 const struct nfsd4_client_tracking_ops *client_tracking_ops;
92 bool somebody_reclaimed;
94 bool track_reclaim_completes;
95 atomic_t nr_reclaim_complete;
100 /* Time of server startup */
101 struct timespec64 nfssvc_boot;
104 * Max number of connections this nfsd container will allow. Defaults
105 * to '0' which is means that it bases this on the number of threads.
107 unsigned int max_connections;
109 u32 clientid_counter;
110 u32 clverifier_counter;
112 struct svc_serv *nfsd_serv;
114 wait_queue_head_t ntf_wq;
118 * clientid and stateid data for construction of net unique COPY
122 struct idr s2s_cp_stateids;
123 spinlock_t s2s_cp_lock;
126 * Version information
129 bool *nfsd4_minorversions;
132 /* Simple check to find out if a given net was properly initialized */
133 #define nfsd_netns_ready(nn) ((nn)->sessionid_hashtbl)
135 extern void nfsd_netns_free_versions(struct nfsd_net *nn);
137 extern unsigned int nfsd_net_id;
138 #endif /* __NFSD_NETNS_H__ */