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e1000e: start network tx queue only when link is up
[linux-2.6-block.git] / net / netfilter / nf_conntrack_standalone.c
CommitLineData
a0ae2562 1// SPDX-License-Identifier: GPL-2.0
9fb9cbb1
YK		 2#include <linux/types.h>
3#include <linux/netfilter.h>
5a0e3ad6 4#include <linux/slab.h>
9fb9cbb1
YK		 5#include <linux/module.h>
6#include <linux/skbuff.h>
7#include <linux/proc_fs.h>
8#include <linux/seq_file.h>
9#include <linux/percpu.h>
10#include <linux/netdevice.h>
1ae4de0c 11#include <linux/security.h>
457c4cbc 12#include <net/net_namespace.h>
9fb9cbb1
YK		 13#ifdef CONFIG_SYSCTL
14#include <linux/sysctl.h>
15#endif
16
9fb9cbb1 17#include <net/netfilter/nf_conntrack.h>
f6180121 18#include <net/netfilter/nf_conntrack_core.h>
605dcad6 19#include <net/netfilter/nf_conntrack_l4proto.h>
77ab9cff 20#include <net/netfilter/nf_conntrack_expect.h>
9fb9cbb1 21#include <net/netfilter/nf_conntrack_helper.h>
58401572 22#include <net/netfilter/nf_conntrack_acct.h>
5d0aa2cc 23#include <net/netfilter/nf_conntrack_zones.h>
a992ca2a 24#include <net/netfilter/nf_conntrack_timestamp.h>
0e60ebe0 25#include <linux/rculist_nulls.h>
9fb9cbb1 26
ba3fbe66
PNA		 27static bool enable_hooks __read_mostly;
28MODULE_PARM_DESC(enable_hooks, "Always enable conntrack hooks");
29module_param(enable_hooks, bool, 0000);
30
a0ae2562 31unsigned int nf_conntrack_net_id __read_mostly;
9fb9cbb1 32
54b07dca 33#ifdef CONFIG_NF_CONNTRACK_PROCFS
824f1fbe 34void
9fb9cbb1 35print_tuple(struct seq_file *s, const struct nf_conntrack_tuple *tuple,
32948588 36 const struct nf_conntrack_l4proto *l4proto)
9fb9cbb1 37{
f957be9d 38 switch (tuple->src.l3num) {
91950833
FW		 39 case NFPROTO_IPV4:
40 seq_printf(s, "src=%pI4 dst=%pI4 ",
41 &tuple->src.u3.ip, &tuple->dst.u3.ip);
42 break;
43 case NFPROTO_IPV6:
44 seq_printf(s, "src=%pI6 dst=%pI6 ",
45 tuple->src.u3.ip6, tuple->dst.u3.ip6);
46 break;
47 default:
48 break;
49 }
50
51 switch (l4proto->l4proto) {
52 case IPPROTO_ICMP:
53 seq_printf(s, "type=%u code=%u id=%u ",
54 tuple->dst.u.icmp.type,
55 tuple->dst.u.icmp.code,
56 ntohs(tuple->src.u.icmp.id));
57 break;
58 case IPPROTO_TCP:
59 seq_printf(s, "sport=%hu dport=%hu ",
60 ntohs(tuple->src.u.tcp.port),
61 ntohs(tuple->dst.u.tcp.port));
62 break;
63 case IPPROTO_UDPLITE: /* fallthrough */
64 case IPPROTO_UDP:
65 seq_printf(s, "sport=%hu dport=%hu ",
66 ntohs(tuple->src.u.udp.port),
67 ntohs(tuple->dst.u.udp.port));
68
69 break;
70 case IPPROTO_DCCP:
71 seq_printf(s, "sport=%hu dport=%hu ",
72 ntohs(tuple->src.u.dccp.port),
73 ntohs(tuple->dst.u.dccp.port));
74 break;
75 case IPPROTO_SCTP:
76 seq_printf(s, "sport=%hu dport=%hu ",
77 ntohs(tuple->src.u.sctp.port),
78 ntohs(tuple->dst.u.sctp.port));
79 break;
80 case IPPROTO_ICMPV6:
81 seq_printf(s, "type=%u code=%u id=%u ",
82 tuple->dst.u.icmp.type,
83 tuple->dst.u.icmp.code,
84 ntohs(tuple->src.u.icmp.id));
85 break;
86 case IPPROTO_GRE:
87 seq_printf(s, "srckey=0x%x dstkey=0x%x ",
88 ntohs(tuple->src.u.gre.key),
89 ntohs(tuple->dst.u.gre.key));
90 break;
91 default:
92 break;
93 }
9fb9cbb1 94}
e4bd8bce 95EXPORT_SYMBOL_GPL(print_tuple);
9fb9cbb1 96
9fb9cbb1 97struct ct_iter_state {
b2ce2c74 98 struct seq_net_private p;
64b87639
LZ		 99 struct hlist_nulls_head *hash;
100 unsigned int htable_size;
9fb9cbb1 101 unsigned int bucket;
a992ca2a 102 u_int64_t time_now;
9fb9cbb1
YK		 103};
104
ea781f19 105static struct hlist_nulls_node *ct_get_first(struct seq_file *seq)
9fb9cbb1
YK		 106{
107 struct ct_iter_state *st = seq->private;
ea781f19 108 struct hlist_nulls_node *n;
9fb9cbb1
YK		 109
110 for (st->bucket = 0;
64b87639 111 st->bucket < st->htable_size;
9fb9cbb1 112 st->bucket++) {
64b87639
LZ		 113 n = rcu_dereference(
114 hlist_nulls_first_rcu(&st->hash[st->bucket]));
ea781f19 115 if (!is_a_nulls(n))
76507f69 116 return n;
9fb9cbb1
YK		 117 }
118 return NULL;
119}
120
ea781f19
ED		 121static struct hlist_nulls_node *ct_get_next(struct seq_file *seq,
122 struct hlist_nulls_node *head)
9fb9cbb1
YK		 123{
124 struct ct_iter_state *st = seq->private;
125
0e60ebe0 126 head = rcu_dereference(hlist_nulls_next_rcu(head));
ea781f19
ED		 127 while (is_a_nulls(head)) {
128 if (likely(get_nulls_value(head) == st->bucket)) {
64b87639 129 if (++st->bucket >= st->htable_size)
ea781f19
ED		 130 return NULL;
131 }
0e60ebe0 132 head = rcu_dereference(
64b87639 133 hlist_nulls_first_rcu(&st->hash[st->bucket]));
9fb9cbb1
YK		 134 }
135 return head;
136}
137
ea781f19 138static struct hlist_nulls_node *ct_get_idx(struct seq_file *seq, loff_t pos)
9fb9cbb1 139{
ea781f19 140 struct hlist_nulls_node *head = ct_get_first(seq);
9fb9cbb1
YK		 141
142 if (head)
143 while (pos && (head = ct_get_next(seq, head)))
144 pos--;
145 return pos ? NULL : head;
146}
147
148static void *ct_seq_start(struct seq_file *seq, loff_t *pos)
76507f69 149 __acquires(RCU)
9fb9cbb1 150{
a992ca2a
PNA		 151 struct ct_iter_state *st = seq->private;
152
d2de875c 153 st->time_now = ktime_get_real_ns();
76507f69 154 rcu_read_lock();
64b87639
LZ		 155
156 nf_conntrack_get_ht(&st->hash, &st->htable_size);
9fb9cbb1
YK		 157 return ct_get_idx(seq, *pos);
158}
159
160static void *ct_seq_next(struct seq_file *s, void *v, loff_t *pos)
161{
162 (*pos)++;
163 return ct_get_next(s, v);
164}
165
166static void ct_seq_stop(struct seq_file *s, void *v)
76507f69 167 __releases(RCU)
9fb9cbb1 168{
76507f69 169 rcu_read_unlock();
9fb9cbb1
YK		 170}
171
1ae4de0c 172#ifdef CONFIG_NF_CONNTRACK_SECMARK
e71456ae 173static void ct_show_secctx(struct seq_file *s, const struct nf_conn *ct)
1ae4de0c
EP		 174{
175 int ret;
176 u32 len;
177 char *secctx;
178
179 ret = security_secid_to_secctx(ct->secmark, &secctx, &len);
180 if (ret)
e71456ae 181 return;
1ae4de0c 182
e71456ae 183 seq_printf(s, "secctx=%s ", secctx);
1ae4de0c
EP		 184
185 security_release_secctx(secctx, len);
1ae4de0c
EP		 186}
187#else
e71456ae 188static inline void ct_show_secctx(struct seq_file *s, const struct nf_conn *ct)
1ae4de0c 189{
1ae4de0c
EP		 190}
191#endif
192
308ac914 193#ifdef CONFIG_NF_CONNTRACK_ZONES
deedb590
DB		 194static void ct_show_zone(struct seq_file *s, const struct nf_conn *ct,
195 int dir)
308ac914 196{
deedb590
DB		 197 const struct nf_conntrack_zone *zone = nf_ct_zone(ct);
198
199 if (zone->dir != dir)
200 return;
201 switch (zone->dir) {
202 case NF_CT_DEFAULT_ZONE_DIR:
203 seq_printf(s, "zone=%u ", zone->id);
204 break;
205 case NF_CT_ZONE_DIR_ORIG:
206 seq_printf(s, "zone-orig=%u ", zone->id);
207 break;
208 case NF_CT_ZONE_DIR_REPL:
209 seq_printf(s, "zone-reply=%u ", zone->id);
210 break;
211 default:
212 break;
213 }
308ac914
DB		 214}
215#else
deedb590
DB		 216static inline void ct_show_zone(struct seq_file *s, const struct nf_conn *ct,
217 int dir)
308ac914
DB		 218{
219}
220#endif
221
a992ca2a 222#ifdef CONFIG_NF_CONNTRACK_TIMESTAMP
e71456ae 223static void ct_show_delta_time(struct seq_file *s, const struct nf_conn *ct)
a992ca2a 224{
f5c88f56 225 struct ct_iter_state *st = s->private;
a992ca2a 226 struct nf_conn_tstamp *tstamp;
f5c88f56 227 s64 delta_time;
a992ca2a
PNA		 228
229 tstamp = nf_conn_tstamp_find(ct);
230 if (tstamp) {
f5c88f56
PM		 231 delta_time = st->time_now - tstamp->start;
232 if (delta_time > 0)
233 delta_time = div_s64(delta_time, NSEC_PER_SEC);
234 else
235 delta_time = 0;
236
e71456ae
SRRH		 237 seq_printf(s, "delta-time=%llu ",
238 (unsigned long long)delta_time);
a992ca2a 239 }
e71456ae 240 return;
a992ca2a
PNA		 241}
242#else
e71456ae 243static inline void
a992ca2a
PNA		 244ct_show_delta_time(struct seq_file *s, const struct nf_conn *ct)
245{
a992ca2a
PNA		 246}
247#endif
248
a3134d53
FW		 249static const char* l3proto_name(u16 proto)
250{
251 switch (proto) {
252 case AF_INET: return "ipv4";
253 case AF_INET6: return "ipv6";
254 }
255
256 return "unknown";
257}
258
09ec82f5
FW		 259static const char* l4proto_name(u16 proto)
260{
261 switch (proto) {
262 case IPPROTO_ICMP: return "icmp";
263 case IPPROTO_TCP: return "tcp";
264 case IPPROTO_UDP: return "udp";
265 case IPPROTO_DCCP: return "dccp";
266 case IPPROTO_GRE: return "gre";
267 case IPPROTO_SCTP: return "sctp";
268 case IPPROTO_UDPLITE: return "udplite";
269 }
270
271 return "unknown";
272}
273
4b216e21
FW		 274static unsigned int
275seq_print_acct(struct seq_file *s, const struct nf_conn *ct, int dir)
276{
277 struct nf_conn_acct *acct;
278 struct nf_conn_counter *counter;
279
280 acct = nf_conn_acct_find(ct);
281 if (!acct)
282 return 0;
283
284 counter = acct->counter;
285 seq_printf(s, "packets=%llu bytes=%llu ",
286 (unsigned long long)atomic64_read(&counter[dir].packets),
287 (unsigned long long)atomic64_read(&counter[dir].bytes));
288
289 return 0;
290}
291
9fb9cbb1
YK		 292/* return 0 on success, 1 in case of error */
293static int ct_seq_show(struct seq_file *s, void *v)
294{
ea781f19
ED		 295 struct nf_conntrack_tuple_hash *hash = v;
296 struct nf_conn *ct = nf_ct_tuplehash_to_ctrack(hash);
32948588 297 const struct nf_conntrack_l4proto *l4proto;
e77e6ff5 298 struct net *net = seq_file_net(s);
ea781f19 299 int ret = 0;
9fb9cbb1 300
44d6e2f2 301 WARN_ON(!ct);
ea781f19
ED		 302 if (unlikely(!atomic_inc_not_zero(&ct->ct_general.use)))
303 return 0;
9fb9cbb1 304
58e207e4
FW		 305 if (nf_ct_should_gc(ct)) {
306 nf_ct_kill(ct);
307 goto release;
308 }
309
9fb9cbb1
YK		 310 /* we only want to print DIR_ORIGINAL */
311 if (NF_CT_DIRECTION(hash))
ea781f19 312 goto release;
9fb9cbb1 313
e77e6ff5
LZ		 314 if (!net_eq(nf_ct_net(ct), net))
315 goto release;
316
4a60dc74 317 l4proto = nf_ct_l4proto_find(nf_ct_protonum(ct));
9fb9cbb1 318
ea781f19 319 ret = -ENOSPC;
90964016 320 seq_printf(s, "%-8s %u %-8s %u ",
f957be9d 321 l3proto_name(nf_ct_l3num(ct)), nf_ct_l3num(ct),
90964016
PNA		 322 l4proto_name(l4proto->l4proto), nf_ct_protonum(ct));
323
324 if (!test_bit(IPS_OFFLOAD_BIT, &ct->status))
325 seq_printf(s, "%ld ", nf_ct_expires(ct) / HZ);
9fb9cbb1 326
37246a58
SRRH		 327 if (l4proto->print_conntrack)
328 l4proto->print_conntrack(s, ct);
9fb9cbb1 329
824f1fbe 330 print_tuple(s, &ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple,
f957be9d 331 l4proto);
9fb9cbb1 332
deedb590
DB		 333 ct_show_zone(s, ct, NF_CT_ZONE_DIR_ORIG);
334
e71456ae
SRRH		 335 if (seq_has_overflowed(s))
336 goto release;
337
58401572 338 if (seq_print_acct(s, ct, IP_CT_DIR_ORIGINAL))
ea781f19 339 goto release;
9fb9cbb1 340
c88130bc 341 if (!(test_bit(IPS_SEEN_REPLY_BIT, &ct->status)))
cdec2685 342 seq_puts(s, "[UNREPLIED] ");
9fb9cbb1 343
f957be9d 344 print_tuple(s, &ct->tuplehash[IP_CT_DIR_REPLY].tuple, l4proto);
9fb9cbb1 345
deedb590
DB		 346 ct_show_zone(s, ct, NF_CT_ZONE_DIR_REPL);
347
58401572 348 if (seq_print_acct(s, ct, IP_CT_DIR_REPLY))
ea781f19 349 goto release;
9fb9cbb1 350
90964016
PNA		 351 if (test_bit(IPS_OFFLOAD_BIT, &ct->status))
352 seq_puts(s, "[OFFLOAD] ");
353 else if (test_bit(IPS_ASSURED_BIT, &ct->status))
cdec2685 354 seq_puts(s, "[ASSURED] ");
9fb9cbb1 355
e71456ae 356 if (seq_has_overflowed(s))
ea781f19 357 goto release;
e71456ae
SRRH		 358
359#if defined(CONFIG_NF_CONNTRACK_MARK)
360 seq_printf(s, "mark=%u ", ct->mark);
9fb9cbb1
YK		 361#endif
362
e71456ae 363 ct_show_secctx(s, ct);
deedb590 364 ct_show_zone(s, ct, NF_CT_DEFAULT_ZONE_DIR);
e71456ae
SRRH		 365 ct_show_delta_time(s, ct);
366
367 seq_printf(s, "use=%u\n", atomic_read(&ct->ct_general.use));
a992ca2a 368
e71456ae 369 if (seq_has_overflowed(s))
ea781f19 370 goto release;
a5d29264 371
ea781f19
ED		 372 ret = 0;
373release:
374 nf_ct_put(ct);
d88d7de0 375 return ret;
9fb9cbb1
YK		 376}
377
56b3d975 378static const struct seq_operations ct_seq_ops = {
9fb9cbb1
YK		 379 .start = ct_seq_start,
380 .next = ct_seq_next,
381 .stop = ct_seq_stop,
382 .show = ct_seq_show
383};
384
9fb9cbb1
YK		 385static void *ct_cpu_seq_start(struct seq_file *seq, loff_t *pos)
386{
8e9df801 387 struct net *net = seq_file_net(seq);
9fb9cbb1
YK		 388 int cpu;
389
390 if (*pos == 0)
391 return SEQ_START_TOKEN;
392
0f23174a 393 for (cpu = *pos-1; cpu < nr_cpu_ids; ++cpu) {
9fb9cbb1
YK		 394 if (!cpu_possible(cpu))
395 continue;
396 *pos = cpu + 1;
8e9df801 397 return per_cpu_ptr(net->ct.stat, cpu);
9fb9cbb1
YK		 398 }
399
400 return NULL;
401}
402
403static void *ct_cpu_seq_next(struct seq_file *seq, void *v, loff_t *pos)
404{
8e9df801 405 struct net *net = seq_file_net(seq);
9fb9cbb1
YK		 406 int cpu;
407
0f23174a 408 for (cpu = *pos; cpu < nr_cpu_ids; ++cpu) {
9fb9cbb1
YK		 409 if (!cpu_possible(cpu))
410 continue;
411 *pos = cpu + 1;
8e9df801 412 return per_cpu_ptr(net->ct.stat, cpu);
9fb9cbb1
YK		 413 }
414
415 return NULL;
416}
417
418static void ct_cpu_seq_stop(struct seq_file *seq, void *v)
419{
420}
421
422static int ct_cpu_seq_show(struct seq_file *seq, void *v)
423{
8e9df801
AD		 424 struct net *net = seq_file_net(seq);
425 unsigned int nr_conntracks = atomic_read(&net->ct.count);
32948588 426 const struct ip_conntrack_stat *st = v;
9fb9cbb1
YK		 427
428 if (v == SEQ_START_TOKEN) {
cdec2685 429 seq_puts(seq, "entries searched found new invalid ignore delete delete_list insert insert_failed drop early_drop icmp_error expect_new expect_create expect_delete search_restart\n");
9fb9cbb1
YK		 430 return 0;
431 }
432
433 seq_printf(seq, "%08x %08x %08x %08x %08x %08x %08x %08x "
af740b2c 434 "%08x %08x %08x %08x %08x %08x %08x %08x %08x\n",
9fb9cbb1 435 nr_conntracks,
8e8118f8 436 0,
9fb9cbb1 437 st->found,
8e8118f8 438 0,
9fb9cbb1
YK		 439 st->invalid,
440 st->ignore,
8e8118f8
FW		 441 0,
442 0,
9fb9cbb1
YK		 443 st->insert,
444 st->insert_failed,
445 st->drop,
446 st->early_drop,
447 st->error,
448
449 st->expect_new,
450 st->expect_create,
af740b2c
JDB		 451 st->expect_delete,
452 st->search_restart
9fb9cbb1
YK		 453 );
454 return 0;
455}
456
56b3d975 457static const struct seq_operations ct_cpu_seq_ops = {
9fb9cbb1
YK		 458 .start = ct_cpu_seq_start,
459 .next = ct_cpu_seq_next,
460 .stop = ct_cpu_seq_stop,
461 .show = ct_cpu_seq_show,
462};
463
b2ce2c74 464static int nf_conntrack_standalone_init_proc(struct net *net)
b916f7d4
AD		 465{
466 struct proc_dir_entry *pde;
f13f2aee
PW		 467 kuid_t root_uid;
468 kgid_t root_gid;
b916f7d4 469
c3506372
CH		 470 pde = proc_create_net("nf_conntrack", 0440, net->proc_net, &ct_seq_ops,
471 sizeof(struct ct_iter_state));
b916f7d4
AD		 472 if (!pde)
473 goto out_nf_conntrack;
52c0e111 474
f13f2aee
PW		 475 root_uid = make_kuid(net->user_ns, 0);
476 root_gid = make_kgid(net->user_ns, 0);
477 if (uid_valid(root_uid) && gid_valid(root_gid))
478 proc_set_user(pde, root_uid, root_gid);
479
c3506372
CH		 480 pde = proc_create_net("nf_conntrack", 0444, net->proc_net_stat,
481 &ct_cpu_seq_ops, sizeof(struct seq_net_private));
b916f7d4
AD		 482 if (!pde)
483 goto out_stat_nf_conntrack;
b916f7d4
AD		 484 return 0;
485
486out_stat_nf_conntrack:
ece31ffd 487 remove_proc_entry("nf_conntrack", net->proc_net);
b916f7d4
AD		 488out_nf_conntrack:
489 return -ENOMEM;
490}
491
b2ce2c74 492static void nf_conntrack_standalone_fini_proc(struct net *net)
b916f7d4 493{
b2ce2c74 494 remove_proc_entry("nf_conntrack", net->proc_net_stat);
ece31ffd 495 remove_proc_entry("nf_conntrack", net->proc_net);
b916f7d4
AD		 496}
497#else
b2ce2c74 498static int nf_conntrack_standalone_init_proc(struct net *net)
b916f7d4
AD		 499{
500 return 0;
501}
502
b2ce2c74 503static void nf_conntrack_standalone_fini_proc(struct net *net)
b916f7d4
AD		 504{
505}
54b07dca 506#endif /* CONFIG_NF_CONNTRACK_PROCFS */
9fb9cbb1
YK		 507
508/* Sysctl support */
509
510#ifdef CONFIG_SYSCTL
9fb9cbb1 511/* Log invalid packets of a given protocol */
3183ab89
FW		 512static int log_invalid_proto_min __read_mostly;
513static int log_invalid_proto_max __read_mostly = 255;
8f14c99c
TZ		 514static int zero;
515static int one = 1;
3183ab89
FW		 516
517/* size the user *wants to set */
518static unsigned int nf_conntrack_htable_size_user __read_mostly;
519
520static int
521nf_conntrack_hash_sysctl(struct ctl_table *table, int write,
522 void __user *buffer, size_t *lenp, loff_t *ppos)
523{
524 int ret;
525
526 ret = proc_dointvec(table, write, buffer, lenp, ppos);
527 if (ret < 0 || !write)
528 return ret;
529
530 /* update ret, we might not be able to satisfy request */
531 ret = nf_conntrack_hash_resize(nf_conntrack_htable_size_user);
532
533 /* update it to the actual value used by conntrack */
534 nf_conntrack_htable_size_user = nf_conntrack_htable_size;
535 return ret;
536}
9fb9cbb1 537
9714be7d 538static struct ctl_table_header *nf_ct_netfilter_header;
9fb9cbb1 539
4a65798a
FW		 540enum nf_ct_sysctl_index {
541 NF_SYSCTL_CT_MAX,
542 NF_SYSCTL_CT_COUNT,
543 NF_SYSCTL_CT_BUCKETS,
544 NF_SYSCTL_CT_CHECKSUM,
545 NF_SYSCTL_CT_LOG_INVALID,
546 NF_SYSCTL_CT_EXPECT_MAX,
d912dec1
FW		 547 NF_SYSCTL_CT_ACCT,
548 NF_SYSCTL_CT_HELPER,
cb2833ed
FW		 549#ifdef CONFIG_NF_CONNTRACK_EVENTS
550 NF_SYSCTL_CT_EVENTS,
551#endif
552#ifdef CONFIG_NF_CONNTRACK_TIMESTAMP
553 NF_SYSCTL_CT_TIMESTAMP,
554#endif
b884fa46
FW		 555 NF_SYSCTL_CT_PROTO_TIMEOUT_GENERIC,
556 NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_SYN_SENT,
557 NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_SYN_RECV,
558 NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_ESTABLISHED,
559 NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_FIN_WAIT,
560 NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_CLOSE_WAIT,
561 NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_LAST_ACK,
562 NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_TIME_WAIT,
563 NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_CLOSE,
564 NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_RETRANS,
565 NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_UNACK,
566 NF_SYSCTL_CT_PROTO_TCP_LOOSE,
567 NF_SYSCTL_CT_PROTO_TCP_LIBERAL,
568 NF_SYSCTL_CT_PROTO_TCP_MAX_RETRANS,
569 NF_SYSCTL_CT_PROTO_TIMEOUT_UDP,
570 NF_SYSCTL_CT_PROTO_TIMEOUT_UDP_STREAM,
571 NF_SYSCTL_CT_PROTO_TIMEOUT_ICMP,
572 NF_SYSCTL_CT_PROTO_TIMEOUT_ICMPV6,
573#ifdef CONFIG_NF_CT_PROTO_SCTP
574 NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_CLOSED,
575 NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_COOKIE_WAIT,
576 NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_COOKIE_ECHOED,
577 NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_ESTABLISHED,
578 NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_SHUTDOWN_SENT,
579 NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_SHUTDOWN_RECD,
580 NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_SHUTDOWN_ACK_SENT,
581 NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_HEARTBEAT_SENT,
582 NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_HEARTBEAT_ACKED,
583#endif
584#ifdef CONFIG_NF_CT_PROTO_DCCP
585 NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_REQUEST,
586 NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_RESPOND,
587 NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_PARTOPEN,
588 NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_OPEN,
589 NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_CLOSEREQ,
590 NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_CLOSING,
591 NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_TIMEWAIT,
592 NF_SYSCTL_CT_PROTO_DCCP_LOOSE,
593#endif
594#ifdef CONFIG_NF_CT_PROTO_GRE
595 NF_SYSCTL_CT_PROTO_TIMEOUT_GRE,
596 NF_SYSCTL_CT_PROTO_TIMEOUT_GRE_STREAM,
597#endif
598
599 __NF_SYSCTL_CT_LAST_SYSCTL,
4a65798a
FW		 600};
601
b884fa46
FW		 602#define NF_SYSCTL_CT_LAST_SYSCTL (__NF_SYSCTL_CT_LAST_SYSCTL + 1)
603
fe2c6338 604static struct ctl_table nf_ct_sysctl_table[] = {
4a65798a 605 [NF_SYSCTL_CT_MAX] = {
9fb9cbb1
YK		 606 .procname = "nf_conntrack_max",
607 .data = &nf_conntrack_max,
608 .maxlen = sizeof(int),
609 .mode = 0644,
6d9f239a 610 .proc_handler = proc_dointvec,
9fb9cbb1 611 },
4a65798a 612 [NF_SYSCTL_CT_COUNT] = {
9fb9cbb1 613 .procname = "nf_conntrack_count",
49ac8713 614 .data = &init_net.ct.count,
9fb9cbb1
YK		 615 .maxlen = sizeof(int),
616 .mode = 0444,
6d9f239a 617 .proc_handler = proc_dointvec,
9fb9cbb1 618 },
4a65798a 619 [NF_SYSCTL_CT_BUCKETS] = {
9fb9cbb1 620 .procname = "nf_conntrack_buckets",
3183ab89 621 .data = &nf_conntrack_htable_size_user,
9fb9cbb1 622 .maxlen = sizeof(unsigned int),
3183ab89
FW		 623 .mode = 0644,
624 .proc_handler = nf_conntrack_hash_sysctl,
9fb9cbb1 625 },
4a65798a 626 [NF_SYSCTL_CT_CHECKSUM] = {
39a27a35 627 .procname = "nf_conntrack_checksum",
c04d0552 628 .data = &init_net.ct.sysctl_checksum,
8f14c99c 629 .maxlen = sizeof(int),
39a27a35 630 .mode = 0644,
8f14c99c
TZ		 631 .proc_handler = proc_dointvec_minmax,
632 .extra1 = &zero,
633 .extra2 = &one,
39a27a35 634 },
4a65798a 635 [NF_SYSCTL_CT_LOG_INVALID] = {
9fb9cbb1 636 .procname = "nf_conntrack_log_invalid",
c2a2c7e0 637 .data = &init_net.ct.sysctl_log_invalid,
9fb9cbb1
YK		 638 .maxlen = sizeof(unsigned int),
639 .mode = 0644,
6d9f239a 640 .proc_handler = proc_dointvec_minmax,
9fb9cbb1
YK		 641 .extra1 = &log_invalid_proto_min,
642 .extra2 = &log_invalid_proto_max,
643 },
4a65798a 644 [NF_SYSCTL_CT_EXPECT_MAX] = {
f264a7df
PM		 645 .procname = "nf_conntrack_expect_max",
646 .data = &nf_ct_expect_max,
647 .maxlen = sizeof(int),
648 .mode = 0644,
6d9f239a 649 .proc_handler = proc_dointvec,
f264a7df 650 },
d912dec1
FW		 651 [NF_SYSCTL_CT_ACCT] = {
652 .procname = "nf_conntrack_acct",
653 .data = &init_net.ct.sysctl_acct,
8f14c99c 654 .maxlen = sizeof(int),
d912dec1 655 .mode = 0644,
8f14c99c
TZ		 656 .proc_handler = proc_dointvec_minmax,
657 .extra1 = &zero,
658 .extra2 = &one,
d912dec1
FW		 659 },
660 [NF_SYSCTL_CT_HELPER] = {
661 .procname = "nf_conntrack_helper",
662 .data = &init_net.ct.sysctl_auto_assign_helper,
8f14c99c 663 .maxlen = sizeof(int),
d912dec1 664 .mode = 0644,
8f14c99c
TZ		 665 .proc_handler = proc_dointvec_minmax,
666 .extra1 = &zero,
667 .extra2 = &one,
d912dec1 668 },
cb2833ed
FW		 669#ifdef CONFIG_NF_CONNTRACK_EVENTS
670 [NF_SYSCTL_CT_EVENTS] = {
671 .procname = "nf_conntrack_events",
672 .data = &init_net.ct.sysctl_events,
8f14c99c 673 .maxlen = sizeof(int),
cb2833ed 674 .mode = 0644,
8f14c99c
TZ		 675 .proc_handler = proc_dointvec_minmax,
676 .extra1 = &zero,
677 .extra2 = &one,
cb2833ed
FW		 678 },
679#endif
680#ifdef CONFIG_NF_CONNTRACK_TIMESTAMP
681 [NF_SYSCTL_CT_TIMESTAMP] = {
682 .procname = "nf_conntrack_timestamp",
683 .data = &init_net.ct.sysctl_tstamp,
8f14c99c 684 .maxlen = sizeof(int),
cb2833ed 685 .mode = 0644,
8f14c99c
TZ		 686 .proc_handler = proc_dointvec_minmax,
687 .extra1 = &zero,
688 .extra2 = &one,
cb2833ed
FW		 689 },
690#endif
b884fa46
FW		 691 [NF_SYSCTL_CT_PROTO_TIMEOUT_GENERIC] = {
692 .procname = "nf_conntrack_generic_timeout",
693 .maxlen = sizeof(unsigned int),
694 .mode = 0644,
695 .proc_handler = proc_dointvec_jiffies,
696 },
697 [NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_SYN_SENT] = {
698 .procname = "nf_conntrack_tcp_timeout_syn_sent",
699 .maxlen = sizeof(unsigned int),
700 .mode = 0644,
701 .proc_handler = proc_dointvec_jiffies,
702 },
703 [NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_SYN_RECV] = {
704 .procname = "nf_conntrack_tcp_timeout_syn_recv",
705 .maxlen = sizeof(unsigned int),
706 .mode = 0644,
707 .proc_handler = proc_dointvec_jiffies,
708 },
709 [NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_ESTABLISHED] = {
710 .procname = "nf_conntrack_tcp_timeout_established",
711 .maxlen = sizeof(unsigned int),
712 .mode = 0644,
713 .proc_handler = proc_dointvec_jiffies,
714 },
715 [NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_FIN_WAIT] = {
716 .procname = "nf_conntrack_tcp_timeout_fin_wait",
717 .maxlen = sizeof(unsigned int),
718 .mode = 0644,
719 .proc_handler = proc_dointvec_jiffies,
720 },
721 [NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_CLOSE_WAIT] = {
722 .procname = "nf_conntrack_tcp_timeout_close_wait",
723 .maxlen = sizeof(unsigned int),
724 .mode = 0644,
725 .proc_handler = proc_dointvec_jiffies,
726 },
727 [NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_LAST_ACK] = {
728 .procname = "nf_conntrack_tcp_timeout_last_ack",
729 .maxlen = sizeof(unsigned int),
730 .mode = 0644,
731 .proc_handler = proc_dointvec_jiffies,
732 },
733 [NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_TIME_WAIT] = {
734 .procname = "nf_conntrack_tcp_timeout_time_wait",
735 .maxlen = sizeof(unsigned int),
736 .mode = 0644,
737 .proc_handler = proc_dointvec_jiffies,
738 },
739 [NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_CLOSE] = {
740 .procname = "nf_conntrack_tcp_timeout_close",
741 .maxlen = sizeof(unsigned int),
742 .mode = 0644,
743 .proc_handler = proc_dointvec_jiffies,
744 },
745 [NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_RETRANS] = {
746 .procname = "nf_conntrack_tcp_timeout_max_retrans",
747 .maxlen = sizeof(unsigned int),
748 .mode = 0644,
749 .proc_handler = proc_dointvec_jiffies,
750 },
751 [NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_UNACK] = {
752 .procname = "nf_conntrack_tcp_timeout_unacknowledged",
753 .maxlen = sizeof(unsigned int),
754 .mode = 0644,
755 .proc_handler = proc_dointvec_jiffies,
756 },
757 [NF_SYSCTL_CT_PROTO_TCP_LOOSE] = {
758 .procname = "nf_conntrack_tcp_loose",
8f14c99c 759 .maxlen = sizeof(int),
b884fa46 760 .mode = 0644,
8f14c99c
TZ		 761 .proc_handler = proc_dointvec_minmax,
762 .extra1 = &zero,
763 .extra2 = &one,
b884fa46
FW		 764 },
765 [NF_SYSCTL_CT_PROTO_TCP_LIBERAL] = {
766 .procname = "nf_conntrack_tcp_be_liberal",
8f14c99c 767 .maxlen = sizeof(int),
b884fa46 768 .mode = 0644,
8f14c99c
TZ		 769 .proc_handler = proc_dointvec_minmax,
770 .extra1 = &zero,
771 .extra2 = &one,
b884fa46
FW		 772 },
773 [NF_SYSCTL_CT_PROTO_TCP_MAX_RETRANS] = {
774 .procname = "nf_conntrack_tcp_max_retrans",
775 .maxlen = sizeof(unsigned int),
776 .mode = 0644,
777 .proc_handler = proc_dointvec,
778 },
779 [NF_SYSCTL_CT_PROTO_TIMEOUT_UDP] = {
780 .procname = "nf_conntrack_udp_timeout",
781 .maxlen = sizeof(unsigned int),
782 .mode = 0644,
783 .proc_handler = proc_dointvec_jiffies,
784 },
785 [NF_SYSCTL_CT_PROTO_TIMEOUT_UDP_STREAM] = {
786 .procname = "nf_conntrack_udp_timeout_stream",
787 .maxlen = sizeof(unsigned int),
788 .mode = 0644,
789 .proc_handler = proc_dointvec_jiffies,
790 },
791 [NF_SYSCTL_CT_PROTO_TIMEOUT_ICMP] = {
792 .procname = "nf_conntrack_icmp_timeout",
793 .maxlen = sizeof(unsigned int),
794 .mode = 0644,
795 .proc_handler = proc_dointvec_jiffies,
796 },
797 [NF_SYSCTL_CT_PROTO_TIMEOUT_ICMPV6] = {
798 .procname = "nf_conntrack_icmpv6_timeout",
799 .maxlen = sizeof(unsigned int),
800 .mode = 0644,
801 .proc_handler = proc_dointvec_jiffies,
802 },
803#ifdef CONFIG_NF_CT_PROTO_SCTP
804 [NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_CLOSED] = {
805 .procname = "nf_conntrack_sctp_timeout_closed",
806 .maxlen = sizeof(unsigned int),
807 .mode = 0644,
808 .proc_handler = proc_dointvec_jiffies,
809 },
810 [NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_COOKIE_WAIT] = {
811 .procname = "nf_conntrack_sctp_timeout_cookie_wait",
812 .maxlen = sizeof(unsigned int),
813 .mode = 0644,
814 .proc_handler = proc_dointvec_jiffies,
815 },
816 [NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_COOKIE_ECHOED] = {
817 .procname = "nf_conntrack_sctp_timeout_cookie_echoed",
818 .maxlen = sizeof(unsigned int),
819 .mode = 0644,
820 .proc_handler = proc_dointvec_jiffies,
821 },
822 [NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_ESTABLISHED] = {
823 .procname = "nf_conntrack_sctp_timeout_established",
824 .maxlen = sizeof(unsigned int),
825 .mode = 0644,
826 .proc_handler = proc_dointvec_jiffies,
827 },
828 [NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_SHUTDOWN_SENT] = {
829 .procname = "nf_conntrack_sctp_timeout_shutdown_sent",
830 .maxlen = sizeof(unsigned int),
831 .mode = 0644,
832 .proc_handler = proc_dointvec_jiffies,
833 },
834 [NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_SHUTDOWN_RECD] = {
835 .procname = "nf_conntrack_sctp_timeout_shutdown_recd",
836 .maxlen = sizeof(unsigned int),
837 .mode = 0644,
838 .proc_handler = proc_dointvec_jiffies,
839 },
840 [NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_SHUTDOWN_ACK_SENT] = {
841 .procname = "nf_conntrack_sctp_timeout_shutdown_ack_sent",
842 .maxlen = sizeof(unsigned int),
843 .mode = 0644,
844 .proc_handler = proc_dointvec_jiffies,
845 },
846 [NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_HEARTBEAT_SENT] = {
847 .procname = "nf_conntrack_sctp_timeout_heartbeat_sent",
848 .maxlen = sizeof(unsigned int),
849 .mode = 0644,
850 .proc_handler = proc_dointvec_jiffies,
851 },
852 [NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_HEARTBEAT_ACKED] = {
853 .procname = "nf_conntrack_sctp_timeout_heartbeat_acked",
854 .maxlen = sizeof(unsigned int),
855 .mode = 0644,
856 .proc_handler = proc_dointvec_jiffies,
857 },
858#endif
859#ifdef CONFIG_NF_CT_PROTO_DCCP
860 [NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_REQUEST] = {
861 .procname = "nf_conntrack_dccp_timeout_request",
862 .maxlen = sizeof(unsigned int),
863 .mode = 0644,
864 .proc_handler = proc_dointvec_jiffies,
865 },
866 [NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_RESPOND] = {
867 .procname = "nf_conntrack_dccp_timeout_respond",
868 .maxlen = sizeof(unsigned int),
869 .mode = 0644,
870 .proc_handler = proc_dointvec_jiffies,
871 },
872 [NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_PARTOPEN] = {
873 .procname = "nf_conntrack_dccp_timeout_partopen",
874 .maxlen = sizeof(unsigned int),
875 .mode = 0644,
876 .proc_handler = proc_dointvec_jiffies,
877 },
878 [NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_OPEN] = {
879 .procname = "nf_conntrack_dccp_timeout_open",
880 .maxlen = sizeof(unsigned int),
881 .mode = 0644,
882 .proc_handler = proc_dointvec_jiffies,
883 },
884 [NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_CLOSEREQ] = {
885 .procname = "nf_conntrack_dccp_timeout_closereq",
886 .maxlen = sizeof(unsigned int),
887 .mode = 0644,
888 .proc_handler = proc_dointvec_jiffies,
889 },
890 [NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_CLOSING] = {
891 .procname = "nf_conntrack_dccp_timeout_closing",
892 .maxlen = sizeof(unsigned int),
893 .mode = 0644,
894 .proc_handler = proc_dointvec_jiffies,
895 },
896 [NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_TIMEWAIT] = {
897 .procname = "nf_conntrack_dccp_timeout_timewait",
898 .maxlen = sizeof(unsigned int),
899 .mode = 0644,
900 .proc_handler = proc_dointvec_jiffies,
901 },
902 [NF_SYSCTL_CT_PROTO_DCCP_LOOSE] = {
903 .procname = "nf_conntrack_dccp_loose",
904 .maxlen = sizeof(int),
905 .mode = 0644,
8f14c99c
TZ		 906 .proc_handler = proc_dointvec_minmax,
907 .extra1 = &zero,
908 .extra2 = &one,
b884fa46
FW		 909 },
910#endif
911#ifdef CONFIG_NF_CT_PROTO_GRE
912 [NF_SYSCTL_CT_PROTO_TIMEOUT_GRE] = {
913 .procname = "nf_conntrack_gre_timeout",
914 .maxlen = sizeof(unsigned int),
915 .mode = 0644,
916 .proc_handler = proc_dointvec_jiffies,
917 },
918 [NF_SYSCTL_CT_PROTO_TIMEOUT_GRE_STREAM] = {
919 .procname = "nf_conntrack_gre_timeout_stream",
920 .maxlen = sizeof(unsigned int),
921 .mode = 0644,
922 .proc_handler = proc_dointvec_jiffies,
923 },
924#endif
925 {}
9fb9cbb1
YK		 926};
927
fe2c6338 928static struct ctl_table nf_ct_netfilter_table[] = {
9fb9cbb1 929 {
9fb9cbb1
YK		 930 .procname = "nf_conntrack_max",
931 .data = &nf_conntrack_max,
932 .maxlen = sizeof(int),
933 .mode = 0644,
6d9f239a 934 .proc_handler = proc_dointvec,
9fb9cbb1 935 },
f8572d8f 936 { }
9fb9cbb1
YK		 937};
938
b884fa46
FW		 939static void nf_conntrack_standalone_init_tcp_sysctl(struct net *net,
940 struct ctl_table *table)
941{
942 struct nf_tcp_net *tn = nf_tcp_pernet(net);
943
944#define XASSIGN(XNAME, tn) \
945 table[NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_ ## XNAME].data = \
946 &(tn)->timeouts[TCP_CONNTRACK_ ## XNAME]
947
948 XASSIGN(SYN_SENT, tn);
949 XASSIGN(SYN_RECV, tn);
950 XASSIGN(ESTABLISHED, tn);
951 XASSIGN(FIN_WAIT, tn);
952 XASSIGN(CLOSE_WAIT, tn);
953 XASSIGN(LAST_ACK, tn);
954 XASSIGN(TIME_WAIT, tn);
955 XASSIGN(CLOSE, tn);
956 XASSIGN(RETRANS, tn);
957 XASSIGN(UNACK, tn);
958#undef XASSIGN
959#define XASSIGN(XNAME, rval) \
960 table[NF_SYSCTL_CT_PROTO_TCP_ ## XNAME].data = (rval)
961
962 XASSIGN(LOOSE, &tn->tcp_loose);
963 XASSIGN(LIBERAL, &tn->tcp_be_liberal);
964 XASSIGN(MAX_RETRANS, &tn->tcp_max_retrans);
965#undef XASSIGN
966}
967
968static void nf_conntrack_standalone_init_sctp_sysctl(struct net *net,
969 struct ctl_table *table)
970{
971#ifdef CONFIG_NF_CT_PROTO_SCTP
972 struct nf_sctp_net *sn = nf_sctp_pernet(net);
973
974#define XASSIGN(XNAME, sn) \
975 table[NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_ ## XNAME].data = \
976 &(sn)->timeouts[SCTP_CONNTRACK_ ## XNAME]
977
978 XASSIGN(CLOSED, sn);
979 XASSIGN(COOKIE_WAIT, sn);
980 XASSIGN(COOKIE_ECHOED, sn);
981 XASSIGN(ESTABLISHED, sn);
982 XASSIGN(SHUTDOWN_SENT, sn);
983 XASSIGN(SHUTDOWN_RECD, sn);
984 XASSIGN(SHUTDOWN_ACK_SENT, sn);
985 XASSIGN(HEARTBEAT_SENT, sn);
986 XASSIGN(HEARTBEAT_ACKED, sn);
987#undef XASSIGN
988#endif
989}
990
991static void nf_conntrack_standalone_init_dccp_sysctl(struct net *net,
992 struct ctl_table *table)
993{
994#ifdef CONFIG_NF_CT_PROTO_DCCP
995 struct nf_dccp_net *dn = nf_dccp_pernet(net);
996
997#define XASSIGN(XNAME, dn) \
998 table[NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_ ## XNAME].data = \
999 &(dn)->dccp_timeout[CT_DCCP_ ## XNAME]
1000
1001 XASSIGN(REQUEST, dn);
1002 XASSIGN(RESPOND, dn);
1003 XASSIGN(PARTOPEN, dn);
1004 XASSIGN(OPEN, dn);
1005 XASSIGN(CLOSEREQ, dn);
1006 XASSIGN(CLOSING, dn);
1007 XASSIGN(TIMEWAIT, dn);
1008#undef XASSIGN
1009
1010 table[NF_SYSCTL_CT_PROTO_DCCP_LOOSE].data = &dn->dccp_loose;
1011#endif
1012}
1013
1014static void nf_conntrack_standalone_init_gre_sysctl(struct net *net,
1015 struct ctl_table *table)
1016{
1017#ifdef CONFIG_NF_CT_PROTO_GRE
1018 struct nf_gre_net *gn = nf_gre_pernet(net);
1019
1020 table[NF_SYSCTL_CT_PROTO_TIMEOUT_GRE].data = &gn->timeouts[GRE_CT_UNREPLIED];
1021 table[NF_SYSCTL_CT_PROTO_TIMEOUT_GRE_STREAM].data = &gn->timeouts[GRE_CT_REPLIED];
1022#endif
1023}
1024
80250707 1025static int nf_conntrack_standalone_init_sysctl(struct net *net)
b916f7d4 1026{
b884fa46 1027 struct nf_udp_net *un = nf_udp_pernet(net);
80250707
AD		 1028 struct ctl_table *table;
1029
b884fa46
FW		 1030 BUILD_BUG_ON(ARRAY_SIZE(nf_ct_sysctl_table) != NF_SYSCTL_CT_LAST_SYSCTL);
1031
80250707
AD		 1032 table = kmemdup(nf_ct_sysctl_table, sizeof(nf_ct_sysctl_table),
1033 GFP_KERNEL);
1034 if (!table)
b884fa46 1035 return -ENOMEM;
80250707 1036
4a65798a
FW		 1037 table[NF_SYSCTL_CT_COUNT].data = &net->ct.count;
1038 table[NF_SYSCTL_CT_CHECKSUM].data = &net->ct.sysctl_checksum;
1039 table[NF_SYSCTL_CT_LOG_INVALID].data = &net->ct.sysctl_log_invalid;
cb2833ed
FW		 1040#ifdef CONFIG_NF_CONNTRACK_EVENTS
1041 table[NF_SYSCTL_CT_EVENTS].data = &net->ct.sysctl_events;
1042#endif
b884fa46
FW		 1043 table[NF_SYSCTL_CT_PROTO_TIMEOUT_GENERIC].data = &nf_generic_pernet(net)->timeout;
1044 table[NF_SYSCTL_CT_PROTO_TIMEOUT_ICMP].data = &nf_icmp_pernet(net)->timeout;
1045 table[NF_SYSCTL_CT_PROTO_TIMEOUT_ICMPV6].data = &nf_icmpv6_pernet(net)->timeout;
1046 table[NF_SYSCTL_CT_PROTO_TIMEOUT_UDP].data = &un->timeouts[UDP_CT_UNREPLIED];
1047 table[NF_SYSCTL_CT_PROTO_TIMEOUT_UDP_STREAM].data = &un->timeouts[UDP_CT_REPLIED];
1048
1049 nf_conntrack_standalone_init_tcp_sysctl(net, table);
1050 nf_conntrack_standalone_init_sctp_sysctl(net, table);
1051 nf_conntrack_standalone_init_dccp_sysctl(net, table);
1052 nf_conntrack_standalone_init_gre_sysctl(net, table);
80250707 1053
464dc801 1054 /* Don't export sysctls to unprivileged users */
d912dec1 1055 if (net->user_ns != &init_user_ns) {
4a65798a 1056 table[NF_SYSCTL_CT_MAX].procname = NULL;
d912dec1
FW		 1057 table[NF_SYSCTL_CT_ACCT].procname = NULL;
1058 table[NF_SYSCTL_CT_HELPER].procname = NULL;
cb2833ed
FW		 1059#ifdef CONFIG_NF_CONNTRACK_TIMESTAMP
1060 table[NF_SYSCTL_CT_TIMESTAMP].procname = NULL;
1061#endif
1062#ifdef CONFIG_NF_CONNTRACK_EVENTS
1063 table[NF_SYSCTL_CT_EVENTS].procname = NULL;
1064#endif
d912dec1 1065 }
464dc801 1066
3183ab89 1067 if (!net_eq(&init_net, net))
4a65798a 1068 table[NF_SYSCTL_CT_BUCKETS].mode = 0444;
3183ab89 1069
ec8f23ce 1070 net->ct.sysctl_header = register_net_sysctl(net, "net/netfilter", table);
80250707 1071 if (!net->ct.sysctl_header)
9714be7d
KPO		 1072 goto out_unregister_netfilter;
1073
b916f7d4
AD		 1074 return 0;
1075
9714be7d 1076out_unregister_netfilter:
80250707 1077 kfree(table);
9714be7d 1078 return -ENOMEM;
b916f7d4
AD		 1079}
1080
80250707 1081static void nf_conntrack_standalone_fini_sysctl(struct net *net)
b916f7d4 1082{
80250707
AD		 1083 struct ctl_table *table;
1084
80250707
AD		 1085 table = net->ct.sysctl_header->ctl_table_arg;
1086 unregister_net_sysctl_table(net->ct.sysctl_header);
1087 kfree(table);
b916f7d4
AD		 1088}
1089#else
80250707 1090static int nf_conntrack_standalone_init_sysctl(struct net *net)
b916f7d4
AD		 1091{
1092 return 0;
1093}
1094
80250707 1095static void nf_conntrack_standalone_fini_sysctl(struct net *net)
b916f7d4
AD		 1096{
1097}
9fb9cbb1
YK		 1098#endif /* CONFIG_SYSCTL */
1099
ba3fbe66
PNA		 1100static void nf_conntrack_fini_net(struct net *net)
1101{
1102 if (enable_hooks)
1103 nf_ct_netns_put(net, NFPROTO_INET);
1104
1105 nf_conntrack_standalone_fini_proc(net);
1106 nf_conntrack_standalone_fini_sysctl(net);
1107}
1108
f94161c1 1109static int nf_conntrack_pernet_init(struct net *net)
dfdb8d79 1110{
b2ce2c74
AD		 1111 int ret;
1112
b884fa46
FW		 1113 net->ct.sysctl_checksum = 1;
1114
1115 ret = nf_conntrack_standalone_init_sysctl(net);
b2ce2c74 1116 if (ret < 0)
b884fa46 1117 return ret;
f94161c1 1118
b2ce2c74
AD		 1119 ret = nf_conntrack_standalone_init_proc(net);
1120 if (ret < 0)
1121 goto out_proc;
f94161c1 1122
b884fa46 1123 ret = nf_conntrack_init_net(net);
80250707 1124 if (ret < 0)
b884fa46 1125 goto out_init_net;
f94161c1 1126
ba3fbe66
PNA		 1127 if (enable_hooks) {
1128 ret = nf_ct_netns_get(net, NFPROTO_INET);
1129 if (ret < 0)
1130 goto out_hooks;
1131 }
1132
b2ce2c74
AD		 1133 return 0;
1134
ba3fbe66 1135out_hooks:
ac088a88 1136 nf_conntrack_cleanup_net(net);
b884fa46 1137out_init_net:
80250707 1138 nf_conntrack_standalone_fini_proc(net);
b2ce2c74 1139out_proc:
ac088a88 1140 nf_conntrack_standalone_fini_sysctl(net);
b2ce2c74 1141 return ret;
dfdb8d79
AD		 1142}
1143
dece40e8 1144static void nf_conntrack_pernet_exit(struct list_head *net_exit_list)
dfdb8d79 1145{
dece40e8
VD		 1146 struct net *net;
1147
ba3fbe66
PNA		 1148 list_for_each_entry(net, net_exit_list, exit_list)
1149 nf_conntrack_fini_net(net);
1150
dece40e8 1151 nf_conntrack_cleanup_net_list(net_exit_list);
dfdb8d79
AD		 1152}
1153
1154static struct pernet_operations nf_conntrack_net_ops = {
dece40e8
VD		 1155 .init = nf_conntrack_pernet_init,
1156 .exit_batch = nf_conntrack_pernet_exit,
a0ae2562
FW		 1157 .id = &nf_conntrack_net_id,
1158 .size = sizeof(struct nf_conntrack_net),
dfdb8d79
AD		 1159};
1160
65b4b4e8 1161static int __init nf_conntrack_standalone_init(void)
9fb9cbb1 1162{
f94161c1
G		 1163 int ret = nf_conntrack_init_start();
1164 if (ret < 0)
1165 goto out_start;
1166
a9e419dc
FW		 1167 BUILD_BUG_ON(SKB_NFCT_PTRMASK != NFCT_PTRMASK);
1168 BUILD_BUG_ON(NFCT_INFOMASK <= IP_CT_NUMBER);
1169
5f9f946b 1170#ifdef CONFIG_SYSCTL
f94161c1
G		 1171 nf_ct_netfilter_header =
1172 register_net_sysctl(&init_net, "net", nf_ct_netfilter_table);
5f9f946b
PNA		 1173 if (!nf_ct_netfilter_header) {
1174 pr_err("nf_conntrack: can't register to sysctl.\n");
5389090b 1175 ret = -ENOMEM;
f94161c1 1176 goto out_sysctl;
5f9f946b 1177 }
3183ab89
FW		 1178
1179 nf_conntrack_htable_size_user = nf_conntrack_htable_size;
5f9f946b 1180#endif
f94161c1
G		 1181
1182 ret = register_pernet_subsys(&nf_conntrack_net_ops);
1183 if (ret < 0)
1184 goto out_pernet;
1185
1186 nf_conntrack_init_end();
1187 return 0;
1188
1189out_pernet:
5f9f946b 1190#ifdef CONFIG_SYSCTL
f94161c1
G		 1191 unregister_net_sysctl_table(nf_ct_netfilter_header);
1192out_sysctl:
5f9f946b 1193#endif
f94161c1
G		 1194 nf_conntrack_cleanup_end();
1195out_start:
1196 return ret;
9fb9cbb1
YK		 1197}
1198
65b4b4e8 1199static void __exit nf_conntrack_standalone_fini(void)
9fb9cbb1 1200{
f94161c1 1201 nf_conntrack_cleanup_start();
dfdb8d79 1202 unregister_pernet_subsys(&nf_conntrack_net_ops);
5f9f946b 1203#ifdef CONFIG_SYSCTL
f94161c1 1204 unregister_net_sysctl_table(nf_ct_netfilter_header);
5f9f946b 1205#endif
1e47ee83 1206 nf_conntrack_cleanup_end();
9fb9cbb1
YK		 1207}
1208
65b4b4e8
AM		 1209module_init(nf_conntrack_standalone_init);
1210module_exit(nf_conntrack_standalone_fini);
Linux 6.x block layer and io_uring tree(s)