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16216333 | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
7ea34ac1 JL |
2 | /* |
3 | * per net namespace data structures for nfsd | |
4 | * | |
5 | * Copyright (C) 2012, Jeff Layton <jlayton@redhat.com> | |
7ea34ac1 JL |
6 | */ |
7 | ||
8 | #ifndef __NFSD_NETNS_H__ | |
9 | #define __NFSD_NETNS_H__ | |
10 | ||
11 | #include <net/net_namespace.h> | |
12 | #include <net/netns/generic.h> | |
13 | ||
52e19c09 SK |
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) | |
18 | ||
1872de0e SK |
19 | #define SESSION_HASH_SIZE 512 |
20 | ||
7ea34ac1 | 21 | struct cld_net; |
9a9c6478 | 22 | struct nfsd4_client_tracking_ops; |
7ea34ac1 | 23 | |
14a571a8 JL |
24 | /* |
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. | |
28 | * | |
29 | * Each nfsd_net runs a nfs4_laundromat workqueue job when necessary to clean | |
30 | * up expired clients and delegations within the container. | |
31 | */ | |
7ea34ac1 JL |
32 | struct nfsd_net { |
33 | struct cld_net *cld_net; | |
b3853e0e | 34 | |
e5f06f72 | 35 | struct cache_detail *svc_expkey_cache; |
b3853e0e | 36 | struct cache_detail *svc_export_cache; |
c2e76ef5 SK |
37 | |
38 | struct cache_detail *idtoname_cache; | |
9e75a4de | 39 | struct cache_detail *nametoid_cache; |
5e1533c7 SK |
40 | |
41 | struct lock_manager nfsd4_manager; | |
a51c84ed | 42 | bool grace_ended; |
9cc76801 | 43 | time64_t boot_time; |
52e19c09 | 44 | |
2c830dd7 BF |
45 | /* internal mount of the "nfsd" pseudofilesystem: */ |
46 | struct vfsmount *nfsd_mnt; | |
47 | ||
e8a79fb1 BF |
48 | struct dentry *nfsd_client_dir; |
49 | ||
52e19c09 SK |
50 | /* |
51 | * reclaim_str_hashtbl[] holds known client info from previous reset/reboot | |
52 | * used in reboot/reset lease grace period processing | |
382a62e7 SK |
53 | * |
54 | * conf_id_hashtbl[], and conf_name_tree hold confirmed | |
55 | * setclientid_confirmed info. | |
a99454aa SK |
56 | * |
57 | * unconf_str_hastbl[] and unconf_name_tree hold unconfirmed | |
58 | * setclientid info. | |
52e19c09 SK |
59 | */ |
60 | struct list_head *reclaim_str_hashtbl; | |
61 | int reclaim_str_hashtbl_size; | |
8daae4dc | 62 | struct list_head *conf_id_hashtbl; |
382a62e7 | 63 | struct rb_root conf_name_tree; |
0a7ec377 | 64 | struct list_head *unconf_id_hashtbl; |
a99454aa | 65 | struct rb_root unconf_name_tree; |
1872de0e | 66 | struct list_head *sessionid_hashtbl; |
5ed58bb2 SK |
67 | /* |
68 | * client_lru holds client queue ordered by nfs4_client.cl_time | |
69 | * for lease renewal. | |
73758fed SK |
70 | * |
71 | * close_lru holds (open) stateowner queue ordered by nfs4_stateowner.so_time | |
72 | * for last close replay. | |
73 | * | |
74 | * All of the above fields are protected by the client_mutex. | |
5ed58bb2 SK |
75 | */ |
76 | struct list_head client_lru; | |
73758fed | 77 | struct list_head close_lru; |
e8c69d17 | 78 | struct list_head del_recall_lru; |
0cc11a61 JL |
79 | |
80 | /* protected by blocked_locks_lock */ | |
7919d0a2 | 81 | struct list_head blocked_locks_lru; |
09121281 SK |
82 | |
83 | struct delayed_work laundromat_work; | |
c9a49628 SK |
84 | |
85 | /* client_lock protects the client lru list and session hash table */ | |
86 | spinlock_t client_lock; | |
3a073369 | 87 | |
0cc11a61 JL |
88 | /* protects blocked_locks_lru */ |
89 | spinlock_t blocked_locks_lock; | |
90 | ||
3a073369 | 91 | struct file *rec_file; |
f141f79d | 92 | bool in_grace; |
7c582e4f | 93 | const struct nfsd4_client_tracking_ops *client_tracking_ops; |
3d733711 | 94 | |
20b7d86f AB |
95 | time64_t nfsd4_lease; |
96 | time64_t nfsd4_grace; | |
03f318ca | 97 | bool somebody_reclaimed; |
2c2fe290 | 98 | |
362063a5 SM |
99 | bool track_reclaim_completes; |
100 | atomic_t nr_reclaim_complete; | |
101 | ||
2c2fe290 | 102 | bool nfsd_net_up; |
8ef66714 | 103 | bool lockd_up; |
b9c0ef85 | 104 | |
294ac32e | 105 | /* Time of server startup */ |
256a89fa | 106 | struct timespec64 nfssvc_boot; |
27c438f5 | 107 | seqlock_t boot_lock; |
9dd9845f | 108 | |
5b8db00b JL |
109 | /* |
110 | * Max number of connections this nfsd container will allow. Defaults | |
111 | * to '0' which is means that it bases this on the number of threads. | |
112 | */ | |
113 | unsigned int max_connections; | |
114 | ||
bf5ed3e3 | 115 | u32 clientid_base; |
294ac32e | 116 | u32 clientid_counter; |
19311aa8 | 117 | u32 clverifier_counter; |
294ac32e | 118 | |
9dd9845f | 119 | struct svc_serv *nfsd_serv; |
2317dc55 VA |
120 | |
121 | wait_queue_head_t ntf_wq; | |
122 | atomic_t ntf_refcnt; | |
e0639dc5 OK |
123 | |
124 | /* | |
125 | * clientid and stateid data for construction of net unique COPY | |
126 | * stateids. | |
127 | */ | |
128 | u32 s2s_cp_cl_id; | |
129 | struct idr s2s_cp_stateids; | |
130 | spinlock_t s2s_cp_lock; | |
e333f3bb TM |
131 | |
132 | /* | |
133 | * Version information | |
134 | */ | |
135 | bool *nfsd_versions; | |
136 | bool *nfsd4_minorversions; | |
3ba75830 BF |
137 | |
138 | /* | |
139 | * Duplicate reply cache | |
140 | */ | |
141 | struct nfsd_drc_bucket *drc_hashtbl; | |
3ba75830 BF |
142 | |
143 | /* max number of entries allowed in the cache */ | |
144 | unsigned int max_drc_entries; | |
145 | ||
146 | /* number of significant bits in the hash value */ | |
147 | unsigned int maskbits; | |
148 | unsigned int drc_hashsize; | |
149 | ||
150 | /* | |
22a46eb4 BF |
151 | * Stats and other tracking of on the duplicate reply cache. |
152 | * These fields and the "rc" fields in nfsdstats are modified | |
153 | * with only the per-bucket cache lock, which isn't really safe | |
154 | * and should be fixed if we want the statistics to be | |
155 | * completely accurate. | |
3ba75830 BF |
156 | */ |
157 | ||
158 | /* total number of entries */ | |
159 | atomic_t num_drc_entries; | |
160 | ||
161 | /* cache misses due only to checksum comparison failures */ | |
162 | unsigned int payload_misses; | |
163 | ||
164 | /* amount of memory (in bytes) currently consumed by the DRC */ | |
165 | unsigned int drc_mem_usage; | |
166 | ||
167 | /* longest hash chain seen */ | |
168 | unsigned int longest_chain; | |
169 | ||
170 | /* size of cache when we saw the longest hash chain */ | |
171 | unsigned int longest_chain_cachesize; | |
172 | ||
173 | struct shrinker nfsd_reply_cache_shrinker; | |
94a4beaa | 174 | /* utsname taken from the process that starts the server */ |
7627d7dc | 175 | char nfsd_name[UNX_MAXNODENAME+1]; |
7ea34ac1 JL |
176 | }; |
177 | ||
44e34da6 BS |
178 | /* Simple check to find out if a given net was properly initialized */ |
179 | #define nfsd_netns_ready(nn) ((nn)->sessionid_hashtbl) | |
180 | ||
e333f3bb TM |
181 | extern void nfsd_netns_free_versions(struct nfsd_net *nn); |
182 | ||
c7d03a00 | 183 | extern unsigned int nfsd_net_id; |
27c438f5 TM |
184 | |
185 | void nfsd_copy_boot_verifier(__be32 verf[2], struct nfsd_net *nn); | |
186 | void nfsd_reset_boot_verifier(struct nfsd_net *nn); | |
7ea34ac1 | 187 | #endif /* __NFSD_NETNS_H__ */ |