1
2#include <linux/types.h>
3#include <linux/netfilter.h>
4#include <linux/slab.h>
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>
11#include <linux/security.h>
12#include <net/net_namespace.h>
13#ifdef CONFIG_SYSCTL
14#include <linux/sysctl.h>
15#endif
16
17#include <net/netfilter/nf_conntrack.h>
18#include <net/netfilter/nf_conntrack_core.h>
19#include <net/netfilter/nf_conntrack_l4proto.h>
20#include <net/netfilter/nf_conntrack_expect.h>
21#include <net/netfilter/nf_conntrack_helper.h>
22#include <net/netfilter/nf_conntrack_acct.h>
23#include <net/netfilter/nf_conntrack_zones.h>
24#include <net/netfilter/nf_conntrack_timestamp.h>
25#ifdef CONFIG_LWTUNNEL
26#include <net/netfilter/nf_hooks_lwtunnel.h>
27#endif
28#include <linux/rculist_nulls.h>
29
30static bool enable_hooks __read_mostly;
31MODULE_PARM_DESC(enable_hooks, "Always enable conntrack hooks");
32module_param(enable_hooks, bool, 0000);
33
34unsigned int nf_conntrack_net_id __read_mostly;
35
36#ifdef CONFIG_NF_CONNTRACK_PROCFS
37void
38print_tuple(struct seq_file *s, const struct nf_conntrack_tuple *tuple,
39 const struct nf_conntrack_l4proto *l4proto)
40{
41 switch (tuple->src.l3num) {
42 case NFPROTO_IPV4:
43 seq_printf(s, "src=%pI4 dst=%pI4 ",
44 &tuple->src.u3.ip, &tuple->dst.u3.ip);
45 break;
46 case NFPROTO_IPV6:
47 seq_printf(s, "src=%pI6 dst=%pI6 ",
48 tuple->src.u3.ip6, tuple->dst.u3.ip6);
49 break;
50 default:
51 break;
52 }
53
54 switch (l4proto->l4proto) {
55 case IPPROTO_ICMP:
56 seq_printf(s, "type=%u code=%u id=%u ",
57 tuple->dst.u.icmp.type,
58 tuple->dst.u.icmp.code,
59 ntohs(tuple->src.u.icmp.id));
60 break;
61 case IPPROTO_TCP:
62 seq_printf(s, "sport=%hu dport=%hu ",
63 ntohs(tuple->src.u.tcp.port),
64 ntohs(tuple->dst.u.tcp.port));
65 break;
66 case IPPROTO_UDPLITE:
67 case IPPROTO_UDP:
68 seq_printf(s, "sport=%hu dport=%hu ",
69 ntohs(tuple->src.u.udp.port),
70 ntohs(tuple->dst.u.udp.port));
71
72 break;
73 case IPPROTO_DCCP:
74 seq_printf(s, "sport=%hu dport=%hu ",
75 ntohs(tuple->src.u.dccp.port),
76 ntohs(tuple->dst.u.dccp.port));
77 break;
78 case IPPROTO_SCTP:
79 seq_printf(s, "sport=%hu dport=%hu ",
80 ntohs(tuple->src.u.sctp.port),
81 ntohs(tuple->dst.u.sctp.port));
82 break;
83 case IPPROTO_ICMPV6:
84 seq_printf(s, "type=%u code=%u id=%u ",
85 tuple->dst.u.icmp.type,
86 tuple->dst.u.icmp.code,
87 ntohs(tuple->src.u.icmp.id));
88 break;
89 case IPPROTO_GRE:
90 seq_printf(s, "srckey=0x%x dstkey=0x%x ",
91 ntohs(tuple->src.u.gre.key),
92 ntohs(tuple->dst.u.gre.key));
93 break;
94 default:
95 break;
96 }
97}
98EXPORT_SYMBOL_GPL(print_tuple);
99
100struct ct_iter_state {
101 struct seq_net_private p;
102 struct hlist_nulls_head *hash;
103 unsigned int htable_size;
104 unsigned int bucket;
105 u_int64_t time_now;
106};
107
108static struct hlist_nulls_node *ct_get_first(struct seq_file *seq)
109{
110 struct ct_iter_state *st = seq->private;
111 struct hlist_nulls_node *n;
112
113 for (st->bucket = 0;
114 st->bucket < st->htable_size;
115 st->bucket++) {
116 n = rcu_dereference(
117 hlist_nulls_first_rcu(&st->hash[st->bucket]));
118 if (!is_a_nulls(n))
119 return n;
120 }
121 return NULL;
122}
123
124static struct hlist_nulls_node *ct_get_next(struct seq_file *seq,
125 struct hlist_nulls_node *head)
126{
127 struct ct_iter_state *st = seq->private;
128
129 head = rcu_dereference(hlist_nulls_next_rcu(head));
130 while (is_a_nulls(head)) {
131 if (likely(get_nulls_value(head) == st->bucket)) {
132 if (++st->bucket >= st->htable_size)
133 return NULL;
134 }
135 head = rcu_dereference(
136 hlist_nulls_first_rcu(&st->hash[st->bucket]));
137 }
138 return head;
139}
140
141static struct hlist_nulls_node *ct_get_idx(struct seq_file *seq, loff_t pos)
142{
143 struct hlist_nulls_node *head = ct_get_first(seq);
144
145 if (head)
146 while (pos && (head = ct_get_next(seq, head)))
147 pos--;
148 return pos ? NULL : head;
149}
150
151static void *ct_seq_start(struct seq_file *seq, loff_t *pos)
152 __acquires(RCU)
153{
154 struct ct_iter_state *st = seq->private;
155
156 st->time_now = ktime_get_real_ns();
157 rcu_read_lock();
158
159 nf_conntrack_get_ht(&st->hash, &st->htable_size);
160 return ct_get_idx(seq, *pos);
161}
162
163static void *ct_seq_next(struct seq_file *s, void *v, loff_t *pos)
164{
165 (*pos)++;
166 return ct_get_next(s, v);
167}
168
169static void ct_seq_stop(struct seq_file *s, void *v)
170 __releases(RCU)
171{
172 rcu_read_unlock();
173}
174
175#ifdef CONFIG_NF_CONNTRACK_SECMARK
176static void ct_show_secctx(struct seq_file *s, const struct nf_conn *ct)
177{
178 int ret;
179 u32 len;
180 char *secctx;
181
182 ret = security_secid_to_secctx(ct->secmark, &secctx, &len);
183 if (ret)
184 return;
185
186 seq_printf(s, "secctx=%s ", secctx);
187
188 security_release_secctx(secctx, len);
189}
190#else
191static inline void ct_show_secctx(struct seq_file *s, const struct nf_conn *ct)
192{
193}
194#endif
195
196#ifdef CONFIG_NF_CONNTRACK_ZONES
197static void ct_show_zone(struct seq_file *s, const struct nf_conn *ct,
198 int dir)
199{
200 const struct nf_conntrack_zone *zone = nf_ct_zone(ct);
201
202 if (zone->dir != dir)
203 return;
204 switch (zone->dir) {
205 case NF_CT_DEFAULT_ZONE_DIR:
206 seq_printf(s, "zone=%u ", zone->id);
207 break;
208 case NF_CT_ZONE_DIR_ORIG:
209 seq_printf(s, "zone-orig=%u ", zone->id);
210 break;
211 case NF_CT_ZONE_DIR_REPL:
212 seq_printf(s, "zone-reply=%u ", zone->id);
213 break;
214 default:
215 break;
216 }
217}
218#else
219static inline void ct_show_zone(struct seq_file *s, const struct nf_conn *ct,
220 int dir)
221{
222}
223#endif
224
225#ifdef CONFIG_NF_CONNTRACK_TIMESTAMP
226static void ct_show_delta_time(struct seq_file *s, const struct nf_conn *ct)
227{
228 struct ct_iter_state *st = s->private;
229 struct nf_conn_tstamp *tstamp;
230 s64 delta_time;
231
232 tstamp = nf_conn_tstamp_find(ct);
233 if (tstamp) {
234 delta_time = st->time_now - tstamp->start;
235 if (delta_time > 0)
236 delta_time = div_s64(delta_time, NSEC_PER_SEC);
237 else
238 delta_time = 0;
239
240 seq_printf(s, "delta-time=%llu ",
241 (unsigned long long)delta_time);
242 }
243 return;
244}
245#else
246static inline void
247ct_show_delta_time(struct seq_file *s, const struct nf_conn *ct)
248{
249}
250#endif
251
252static const char* l3proto_name(u16 proto)
253{
254 switch (proto) {
255 case AF_INET: return "ipv4";
256 case AF_INET6: return "ipv6";
257 }
258
259 return "unknown";
260}
261
262static const char* l4proto_name(u16 proto)
263{
264 switch (proto) {
265 case IPPROTO_ICMP: return "icmp";
266 case IPPROTO_TCP: return "tcp";
267 case IPPROTO_UDP: return "udp";
268 case IPPROTO_DCCP: return "dccp";
269 case IPPROTO_GRE: return "gre";
270 case IPPROTO_SCTP: return "sctp";
271 case IPPROTO_UDPLITE: return "udplite";
272 case IPPROTO_ICMPV6: return "icmpv6";
273 }
274
275 return "unknown";
276}
277
278static unsigned int
279seq_print_acct(struct seq_file *s, const struct nf_conn *ct, int dir)
280{
281 struct nf_conn_acct *acct;
282 struct nf_conn_counter *counter;
283
284 acct = nf_conn_acct_find(ct);
285 if (!acct)
286 return 0;
287
288 counter = acct->counter;
289 seq_printf(s, "packets=%llu bytes=%llu ",
290 (unsigned long long)atomic64_read(&counter[dir].packets),
291 (unsigned long long)atomic64_read(&counter[dir].bytes));
292
293 return 0;
294}
295
296
297static int ct_seq_show(struct seq_file *s, void *v)
298{
299 struct nf_conntrack_tuple_hash *hash = v;
300 struct nf_conn *ct = nf_ct_tuplehash_to_ctrack(hash);
301 const struct nf_conntrack_l4proto *l4proto;
302 struct net *net = seq_file_net(s);
303 int ret = 0;
304
305 WARN_ON(!ct);
306 if (unlikely(!atomic_inc_not_zero(&ct->ct_general.use)))
307 return 0;
308
309 if (nf_ct_should_gc(ct)) {
310 nf_ct_kill(ct);
311 goto release;
312 }
313
314
315 if (NF_CT_DIRECTION(hash))
316 goto release;
317
318 if (!net_eq(nf_ct_net(ct), net))
319 goto release;
320
321 l4proto = nf_ct_l4proto_find(nf_ct_protonum(ct));
322
323 ret = -ENOSPC;
324 seq_printf(s, "%-8s %u %-8s %u ",
325 l3proto_name(nf_ct_l3num(ct)), nf_ct_l3num(ct),
326 l4proto_name(l4proto->l4proto), nf_ct_protonum(ct));
327
328 if (!test_bit(IPS_OFFLOAD_BIT, &ct->status))
329 seq_printf(s, "%ld ", nf_ct_expires(ct) / HZ);
330
331 if (l4proto->print_conntrack)
332 l4proto->print_conntrack(s, ct);
333
334 print_tuple(s, &ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple,
335 l4proto);
336
337 ct_show_zone(s, ct, NF_CT_ZONE_DIR_ORIG);
338
339 if (seq_has_overflowed(s))
340 goto release;
341
342 if (seq_print_acct(s, ct, IP_CT_DIR_ORIGINAL))
343 goto release;
344
345 if (!(test_bit(IPS_SEEN_REPLY_BIT, &ct->status)))
346 seq_puts(s, "[UNREPLIED] ");
347
348 print_tuple(s, &ct->tuplehash[IP_CT_DIR_REPLY].tuple, l4proto);
349
350 ct_show_zone(s, ct, NF_CT_ZONE_DIR_REPL);
351
352 if (seq_print_acct(s, ct, IP_CT_DIR_REPLY))
353 goto release;
354
355 if (test_bit(IPS_HW_OFFLOAD_BIT, &ct->status))
356 seq_puts(s, "[HW_OFFLOAD] ");
357 else if (test_bit(IPS_OFFLOAD_BIT, &ct->status))
358 seq_puts(s, "[OFFLOAD] ");
359 else if (test_bit(IPS_ASSURED_BIT, &ct->status))
360 seq_puts(s, "[ASSURED] ");
361
362 if (seq_has_overflowed(s))
363 goto release;
364
365#if defined(CONFIG_NF_CONNTRACK_MARK)
366 seq_printf(s, "mark=%u ", ct->mark);
367#endif
368
369 ct_show_secctx(s, ct);
370 ct_show_zone(s, ct, NF_CT_DEFAULT_ZONE_DIR);
371 ct_show_delta_time(s, ct);
372
373 seq_printf(s, "use=%u\n", atomic_read(&ct->ct_general.use));
374
375 if (seq_has_overflowed(s))
376 goto release;
377
378 ret = 0;
379release:
380 nf_ct_put(ct);
381 return ret;
382}
383
384static const struct seq_operations ct_seq_ops = {
385 .start = ct_seq_start,
386 .next = ct_seq_next,
387 .stop = ct_seq_stop,
388 .show = ct_seq_show
389};
390
391static void *ct_cpu_seq_start(struct seq_file *seq, loff_t *pos)
392{
393 struct net *net = seq_file_net(seq);
394 int cpu;
395
396 if (*pos == 0)
397 return SEQ_START_TOKEN;
398
399 for (cpu = *pos-1; cpu < nr_cpu_ids; ++cpu) {
400 if (!cpu_possible(cpu))
401 continue;
402 *pos = cpu + 1;
403 return per_cpu_ptr(net->ct.stat, cpu);
404 }
405
406 return NULL;
407}
408
409static void *ct_cpu_seq_next(struct seq_file *seq, void *v, loff_t *pos)
410{
411 struct net *net = seq_file_net(seq);
412 int cpu;
413
414 for (cpu = *pos; cpu < nr_cpu_ids; ++cpu) {
415 if (!cpu_possible(cpu))
416 continue;
417 *pos = cpu + 1;
418 return per_cpu_ptr(net->ct.stat, cpu);
419 }
420 (*pos)++;
421 return NULL;
422}
423
424static void ct_cpu_seq_stop(struct seq_file *seq, void *v)
425{
426}
427
428static int ct_cpu_seq_show(struct seq_file *seq, void *v)
429{
430 struct net *net = seq_file_net(seq);
431 const struct ip_conntrack_stat *st = v;
432 unsigned int nr_conntracks;
433
434 if (v == SEQ_START_TOKEN) {
435 seq_puts(seq, "entries clashres found new invalid ignore delete chainlength insert insert_failed drop early_drop icmp_error expect_new expect_create expect_delete search_restart\n");
436 return 0;
437 }
438
439 nr_conntracks = nf_conntrack_count(net);
440
441 seq_printf(seq, "%08x %08x %08x %08x %08x %08x %08x %08x "
442 "%08x %08x %08x %08x %08x %08x %08x %08x %08x\n",
443 nr_conntracks,
444 st->clash_resolve,
445 st->found,
446 0,
447 st->invalid,
448 0,
449 0,
450 st->chaintoolong,
451 st->insert,
452 st->insert_failed,
453 st->drop,
454 st->early_drop,
455 st->error,
456
457 st->expect_new,
458 st->expect_create,
459 st->expect_delete,
460 st->search_restart
461 );
462 return 0;
463}
464
465static const struct seq_operations ct_cpu_seq_ops = {
466 .start = ct_cpu_seq_start,
467 .next = ct_cpu_seq_next,
468 .stop = ct_cpu_seq_stop,
469 .show = ct_cpu_seq_show,
470};
471
472static int nf_conntrack_standalone_init_proc(struct net *net)
473{
474 struct proc_dir_entry *pde;
475 kuid_t root_uid;
476 kgid_t root_gid;
477
478 pde = proc_create_net("nf_conntrack", 0440, net->proc_net, &ct_seq_ops,
479 sizeof(struct ct_iter_state));
480 if (!pde)
481 goto out_nf_conntrack;
482
483 root_uid = make_kuid(net->user_ns, 0);
484 root_gid = make_kgid(net->user_ns, 0);
485 if (uid_valid(root_uid) && gid_valid(root_gid))
486 proc_set_user(pde, root_uid, root_gid);
487
488 pde = proc_create_net("nf_conntrack", 0444, net->proc_net_stat,
489 &ct_cpu_seq_ops, sizeof(struct seq_net_private));
490 if (!pde)
491 goto out_stat_nf_conntrack;
492 return 0;
493
494out_stat_nf_conntrack:
495 remove_proc_entry("nf_conntrack", net->proc_net);
496out_nf_conntrack:
497 return -ENOMEM;
498}
499
500static void nf_conntrack_standalone_fini_proc(struct net *net)
501{
502 remove_proc_entry("nf_conntrack", net->proc_net_stat);
503 remove_proc_entry("nf_conntrack", net->proc_net);
504}
505#else
506static int nf_conntrack_standalone_init_proc(struct net *net)
507{
508 return 0;
509}
510
511static void nf_conntrack_standalone_fini_proc(struct net *net)
512{
513}
514#endif
515
516u32 nf_conntrack_count(const struct net *net)
517{
518 const struct nf_conntrack_net *cnet = nf_ct_pernet(net);
519
520 return atomic_read(&cnet->count);
521}
522EXPORT_SYMBOL_GPL(nf_conntrack_count);
523
524
525
526#ifdef CONFIG_SYSCTL
527
528static unsigned int nf_conntrack_htable_size_user __read_mostly;
529
530static int
531nf_conntrack_hash_sysctl(struct ctl_table *table, int write,
532 void *buffer, size_t *lenp, loff_t *ppos)
533{
534 int ret;
535
536
537 nf_conntrack_htable_size_user = nf_conntrack_htable_size;
538
539 ret = proc_dointvec(table, write, buffer, lenp, ppos);
540 if (ret < 0 || !write)
541 return ret;
542
543
544 ret = nf_conntrack_hash_resize(nf_conntrack_htable_size_user);
545
546
547 nf_conntrack_htable_size_user = nf_conntrack_htable_size;
548 return ret;
549}
550
551static struct ctl_table_header *nf_ct_netfilter_header;
552
553enum nf_ct_sysctl_index {
554 NF_SYSCTL_CT_MAX,
555 NF_SYSCTL_CT_COUNT,
556 NF_SYSCTL_CT_BUCKETS,
557 NF_SYSCTL_CT_CHECKSUM,
558 NF_SYSCTL_CT_LOG_INVALID,
559 NF_SYSCTL_CT_EXPECT_MAX,
560 NF_SYSCTL_CT_ACCT,
561 NF_SYSCTL_CT_HELPER,
562#ifdef CONFIG_NF_CONNTRACK_EVENTS
563 NF_SYSCTL_CT_EVENTS,
564#endif
565#ifdef CONFIG_NF_CONNTRACK_TIMESTAMP
566 NF_SYSCTL_CT_TIMESTAMP,
567#endif
568 NF_SYSCTL_CT_PROTO_TIMEOUT_GENERIC,
569 NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_SYN_SENT,
570 NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_SYN_RECV,
571 NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_ESTABLISHED,
572 NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_FIN_WAIT,
573 NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_CLOSE_WAIT,
574 NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_LAST_ACK,
575 NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_TIME_WAIT,
576 NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_CLOSE,
577 NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_RETRANS,
578 NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_UNACK,
579#if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
580 NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_OFFLOAD,
581#endif
582 NF_SYSCTL_CT_PROTO_TCP_LOOSE,
583 NF_SYSCTL_CT_PROTO_TCP_LIBERAL,
584 NF_SYSCTL_CT_PROTO_TCP_IGNORE_INVALID_RST,
585 NF_SYSCTL_CT_PROTO_TCP_MAX_RETRANS,
586 NF_SYSCTL_CT_PROTO_TIMEOUT_UDP,
587 NF_SYSCTL_CT_PROTO_TIMEOUT_UDP_STREAM,
588#if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
589 NF_SYSCTL_CT_PROTO_TIMEOUT_UDP_OFFLOAD,
590#endif
591 NF_SYSCTL_CT_PROTO_TIMEOUT_ICMP,
592 NF_SYSCTL_CT_PROTO_TIMEOUT_ICMPV6,
593#ifdef CONFIG_NF_CT_PROTO_SCTP
594 NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_CLOSED,
595 NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_COOKIE_WAIT,
596 NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_COOKIE_ECHOED,
597 NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_ESTABLISHED,
598 NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_SHUTDOWN_SENT,
599 NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_SHUTDOWN_RECD,
600 NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_SHUTDOWN_ACK_SENT,
601 NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_HEARTBEAT_SENT,
602 NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_HEARTBEAT_ACKED,
603#endif
604#ifdef CONFIG_NF_CT_PROTO_DCCP
605 NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_REQUEST,
606 NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_RESPOND,
607 NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_PARTOPEN,
608 NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_OPEN,
609 NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_CLOSEREQ,
610 NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_CLOSING,
611 NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_TIMEWAIT,
612 NF_SYSCTL_CT_PROTO_DCCP_LOOSE,
613#endif
614#ifdef CONFIG_NF_CT_PROTO_GRE
615 NF_SYSCTL_CT_PROTO_TIMEOUT_GRE,
616 NF_SYSCTL_CT_PROTO_TIMEOUT_GRE_STREAM,
617#endif
618#ifdef CONFIG_LWTUNNEL
619 NF_SYSCTL_CT_LWTUNNEL,
620#endif
621
622 __NF_SYSCTL_CT_LAST_SYSCTL,
623};
624
625#define NF_SYSCTL_CT_LAST_SYSCTL (__NF_SYSCTL_CT_LAST_SYSCTL + 1)
626
627static struct ctl_table nf_ct_sysctl_table[] = {
628 [NF_SYSCTL_CT_MAX] = {
629 .procname = "nf_conntrack_max",
630 .data = &nf_conntrack_max,
631 .maxlen = sizeof(int),
632 .mode = 0644,
633 .proc_handler = proc_dointvec,
634 },
635 [NF_SYSCTL_CT_COUNT] = {
636 .procname = "nf_conntrack_count",
637 .maxlen = sizeof(int),
638 .mode = 0444,
639 .proc_handler = proc_dointvec,
640 },
641 [NF_SYSCTL_CT_BUCKETS] = {
642 .procname = "nf_conntrack_buckets",
643 .data = &nf_conntrack_htable_size_user,
644 .maxlen = sizeof(unsigned int),
645 .mode = 0644,
646 .proc_handler = nf_conntrack_hash_sysctl,
647 },
648 [NF_SYSCTL_CT_CHECKSUM] = {
649 .procname = "nf_conntrack_checksum",
650 .data = &init_net.ct.sysctl_checksum,
651 .maxlen = sizeof(u8),
652 .mode = 0644,
653 .proc_handler = proc_dou8vec_minmax,
654 .extra1 = SYSCTL_ZERO,
655 .extra2 = SYSCTL_ONE,
656 },
657 [NF_SYSCTL_CT_LOG_INVALID] = {
658 .procname = "nf_conntrack_log_invalid",
659 .data = &init_net.ct.sysctl_log_invalid,
660 .maxlen = sizeof(u8),
661 .mode = 0644,
662 .proc_handler = proc_dou8vec_minmax,
663 },
664 [NF_SYSCTL_CT_EXPECT_MAX] = {
665 .procname = "nf_conntrack_expect_max",
666 .data = &nf_ct_expect_max,
667 .maxlen = sizeof(int),
668 .mode = 0644,
669 .proc_handler = proc_dointvec,
670 },
671 [NF_SYSCTL_CT_ACCT] = {
672 .procname = "nf_conntrack_acct",
673 .data = &init_net.ct.sysctl_acct,
674 .maxlen = sizeof(u8),
675 .mode = 0644,
676 .proc_handler = proc_dou8vec_minmax,
677 .extra1 = SYSCTL_ZERO,
678 .extra2 = SYSCTL_ONE,
679 },
680 [NF_SYSCTL_CT_HELPER] = {
681 .procname = "nf_conntrack_helper",
682 .maxlen = sizeof(u8),
683 .mode = 0644,
684 .proc_handler = proc_dou8vec_minmax,
685 .extra1 = SYSCTL_ZERO,
686 .extra2 = SYSCTL_ONE,
687 },
688#ifdef CONFIG_NF_CONNTRACK_EVENTS
689 [NF_SYSCTL_CT_EVENTS] = {
690 .procname = "nf_conntrack_events",
691 .data = &init_net.ct.sysctl_events,
692 .maxlen = sizeof(u8),
693 .mode = 0644,
694 .proc_handler = proc_dou8vec_minmax,
695 .extra1 = SYSCTL_ZERO,
696 .extra2 = SYSCTL_ONE,
697 },
698#endif
699#ifdef CONFIG_NF_CONNTRACK_TIMESTAMP
700 [NF_SYSCTL_CT_TIMESTAMP] = {
701 .procname = "nf_conntrack_timestamp",
702 .data = &init_net.ct.sysctl_tstamp,
703 .maxlen = sizeof(u8),
704 .mode = 0644,
705 .proc_handler = proc_dou8vec_minmax,
706 .extra1 = SYSCTL_ZERO,
707 .extra2 = SYSCTL_ONE,
708 },
709#endif
710 [NF_SYSCTL_CT_PROTO_TIMEOUT_GENERIC] = {
711 .procname = "nf_conntrack_generic_timeout",
712 .maxlen = sizeof(unsigned int),
713 .mode = 0644,
714 .proc_handler = proc_dointvec_jiffies,
715 },
716 [NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_SYN_SENT] = {
717 .procname = "nf_conntrack_tcp_timeout_syn_sent",
718 .maxlen = sizeof(unsigned int),
719 .mode = 0644,
720 .proc_handler = proc_dointvec_jiffies,
721 },
722 [NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_SYN_RECV] = {
723 .procname = "nf_conntrack_tcp_timeout_syn_recv",
724 .maxlen = sizeof(unsigned int),
725 .mode = 0644,
726 .proc_handler = proc_dointvec_jiffies,
727 },
728 [NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_ESTABLISHED] = {
729 .procname = "nf_conntrack_tcp_timeout_established",
730 .maxlen = sizeof(unsigned int),
731 .mode = 0644,
732 .proc_handler = proc_dointvec_jiffies,
733 },
734 [NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_FIN_WAIT] = {
735 .procname = "nf_conntrack_tcp_timeout_fin_wait",
736 .maxlen = sizeof(unsigned int),
737 .mode = 0644,
738 .proc_handler = proc_dointvec_jiffies,
739 },
740 [NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_CLOSE_WAIT] = {
741 .procname = "nf_conntrack_tcp_timeout_close_wait",
742 .maxlen = sizeof(unsigned int),
743 .mode = 0644,
744 .proc_handler = proc_dointvec_jiffies,
745 },
746 [NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_LAST_ACK] = {
747 .procname = "nf_conntrack_tcp_timeout_last_ack",
748 .maxlen = sizeof(unsigned int),
749 .mode = 0644,
750 .proc_handler = proc_dointvec_jiffies,
751 },
752 [NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_TIME_WAIT] = {
753 .procname = "nf_conntrack_tcp_timeout_time_wait",
754 .maxlen = sizeof(unsigned int),
755 .mode = 0644,
756 .proc_handler = proc_dointvec_jiffies,
757 },
758 [NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_CLOSE] = {
759 .procname = "nf_conntrack_tcp_timeout_close",
760 .maxlen = sizeof(unsigned int),
761 .mode = 0644,
762 .proc_handler = proc_dointvec_jiffies,
763 },
764 [NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_RETRANS] = {
765 .procname = "nf_conntrack_tcp_timeout_max_retrans",
766 .maxlen = sizeof(unsigned int),
767 .mode = 0644,
768 .proc_handler = proc_dointvec_jiffies,
769 },
770 [NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_UNACK] = {
771 .procname = "nf_conntrack_tcp_timeout_unacknowledged",
772 .maxlen = sizeof(unsigned int),
773 .mode = 0644,
774 .proc_handler = proc_dointvec_jiffies,
775 },
776#if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
777 [NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_OFFLOAD] = {
778 .procname = "nf_flowtable_tcp_timeout",
779 .maxlen = sizeof(unsigned int),
780 .mode = 0644,
781 .proc_handler = proc_dointvec_jiffies,
782 },
783#endif
784 [NF_SYSCTL_CT_PROTO_TCP_LOOSE] = {
785 .procname = "nf_conntrack_tcp_loose",
786 .maxlen = sizeof(u8),
787 .mode = 0644,
788 .proc_handler = proc_dou8vec_minmax,
789 .extra1 = SYSCTL_ZERO,
790 .extra2 = SYSCTL_ONE,
791 },
792 [NF_SYSCTL_CT_PROTO_TCP_LIBERAL] = {
793 .procname = "nf_conntrack_tcp_be_liberal",
794 .maxlen = sizeof(u8),
795 .mode = 0644,
796 .proc_handler = proc_dou8vec_minmax,
797 .extra1 = SYSCTL_ZERO,
798 .extra2 = SYSCTL_ONE,
799 },
800 [NF_SYSCTL_CT_PROTO_TCP_IGNORE_INVALID_RST] = {
801 .procname = "nf_conntrack_tcp_ignore_invalid_rst",
802 .maxlen = sizeof(u8),
803 .mode = 0644,
804 .proc_handler = proc_dou8vec_minmax,
805 .extra1 = SYSCTL_ZERO,
806 .extra2 = SYSCTL_ONE,
807 },
808 [NF_SYSCTL_CT_PROTO_TCP_MAX_RETRANS] = {
809 .procname = "nf_conntrack_tcp_max_retrans",
810 .maxlen = sizeof(u8),
811 .mode = 0644,
812 .proc_handler = proc_dou8vec_minmax,
813 },
814 [NF_SYSCTL_CT_PROTO_TIMEOUT_UDP] = {
815 .procname = "nf_conntrack_udp_timeout",
816 .maxlen = sizeof(unsigned int),
817 .mode = 0644,
818 .proc_handler = proc_dointvec_jiffies,
819 },
820 [NF_SYSCTL_CT_PROTO_TIMEOUT_UDP_STREAM] = {
821 .procname = "nf_conntrack_udp_timeout_stream",
822 .maxlen = sizeof(unsigned int),
823 .mode = 0644,
824 .proc_handler = proc_dointvec_jiffies,
825 },
826#if IS_ENABLED(CONFIG_NFT_FLOW_OFFLOAD)
827 [NF_SYSCTL_CT_PROTO_TIMEOUT_UDP_OFFLOAD] = {
828 .procname = "nf_flowtable_udp_timeout",
829 .maxlen = sizeof(unsigned int),
830 .mode = 0644,
831 .proc_handler = proc_dointvec_jiffies,
832 },
833#endif
834 [NF_SYSCTL_CT_PROTO_TIMEOUT_ICMP] = {
835 .procname = "nf_conntrack_icmp_timeout",
836 .maxlen = sizeof(unsigned int),
837 .mode = 0644,
838 .proc_handler = proc_dointvec_jiffies,
839 },
840 [NF_SYSCTL_CT_PROTO_TIMEOUT_ICMPV6] = {
841 .procname = "nf_conntrack_icmpv6_timeout",
842 .maxlen = sizeof(unsigned int),
843 .mode = 0644,
844 .proc_handler = proc_dointvec_jiffies,
845 },
846#ifdef CONFIG_NF_CT_PROTO_SCTP
847 [NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_CLOSED] = {
848 .procname = "nf_conntrack_sctp_timeout_closed",
849 .maxlen = sizeof(unsigned int),
850 .mode = 0644,
851 .proc_handler = proc_dointvec_jiffies,
852 },
853 [NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_COOKIE_WAIT] = {
854 .procname = "nf_conntrack_sctp_timeout_cookie_wait",
855 .maxlen = sizeof(unsigned int),
856 .mode = 0644,
857 .proc_handler = proc_dointvec_jiffies,
858 },
859 [NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_COOKIE_ECHOED] = {
860 .procname = "nf_conntrack_sctp_timeout_cookie_echoed",
861 .maxlen = sizeof(unsigned int),
862 .mode = 0644,
863 .proc_handler = proc_dointvec_jiffies,
864 },
865 [NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_ESTABLISHED] = {
866 .procname = "nf_conntrack_sctp_timeout_established",
867 .maxlen = sizeof(unsigned int),
868 .mode = 0644,
869 .proc_handler = proc_dointvec_jiffies,
870 },
871 [NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_SHUTDOWN_SENT] = {
872 .procname = "nf_conntrack_sctp_timeout_shutdown_sent",
873 .maxlen = sizeof(unsigned int),
874 .mode = 0644,
875 .proc_handler = proc_dointvec_jiffies,
876 },
877 [NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_SHUTDOWN_RECD] = {
878 .procname = "nf_conntrack_sctp_timeout_shutdown_recd",
879 .maxlen = sizeof(unsigned int),
880 .mode = 0644,
881 .proc_handler = proc_dointvec_jiffies,
882 },
883 [NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_SHUTDOWN_ACK_SENT] = {
884 .procname = "nf_conntrack_sctp_timeout_shutdown_ack_sent",
885 .maxlen = sizeof(unsigned int),
886 .mode = 0644,
887 .proc_handler = proc_dointvec_jiffies,
888 },
889 [NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_HEARTBEAT_SENT] = {
890 .procname = "nf_conntrack_sctp_timeout_heartbeat_sent",
891 .maxlen = sizeof(unsigned int),
892 .mode = 0644,
893 .proc_handler = proc_dointvec_jiffies,
894 },
895 [NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_HEARTBEAT_ACKED] = {
896 .procname = "nf_conntrack_sctp_timeout_heartbeat_acked",
897 .maxlen = sizeof(unsigned int),
898 .mode = 0644,
899 .proc_handler = proc_dointvec_jiffies,
900 },
901#endif
902#ifdef CONFIG_NF_CT_PROTO_DCCP
903 [NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_REQUEST] = {
904 .procname = "nf_conntrack_dccp_timeout_request",
905 .maxlen = sizeof(unsigned int),
906 .mode = 0644,
907 .proc_handler = proc_dointvec_jiffies,
908 },
909 [NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_RESPOND] = {
910 .procname = "nf_conntrack_dccp_timeout_respond",
911 .maxlen = sizeof(unsigned int),
912 .mode = 0644,
913 .proc_handler = proc_dointvec_jiffies,
914 },
915 [NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_PARTOPEN] = {
916 .procname = "nf_conntrack_dccp_timeout_partopen",
917 .maxlen = sizeof(unsigned int),
918 .mode = 0644,
919 .proc_handler = proc_dointvec_jiffies,
920 },
921 [NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_OPEN] = {
922 .procname = "nf_conntrack_dccp_timeout_open",
923 .maxlen = sizeof(unsigned int),
924 .mode = 0644,
925 .proc_handler = proc_dointvec_jiffies,
926 },
927 [NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_CLOSEREQ] = {
928 .procname = "nf_conntrack_dccp_timeout_closereq",
929 .maxlen = sizeof(unsigned int),
930 .mode = 0644,
931 .proc_handler = proc_dointvec_jiffies,
932 },
933 [NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_CLOSING] = {
934 .procname = "nf_conntrack_dccp_timeout_closing",
935 .maxlen = sizeof(unsigned int),
936 .mode = 0644,
937 .proc_handler = proc_dointvec_jiffies,
938 },
939 [NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_TIMEWAIT] = {
940 .procname = "nf_conntrack_dccp_timeout_timewait",
941 .maxlen = sizeof(unsigned int),
942 .mode = 0644,
943 .proc_handler = proc_dointvec_jiffies,
944 },
945 [NF_SYSCTL_CT_PROTO_DCCP_LOOSE] = {
946 .procname = "nf_conntrack_dccp_loose",
947 .maxlen = sizeof(u8),
948 .mode = 0644,
949 .proc_handler = proc_dou8vec_minmax,
950 .extra1 = SYSCTL_ZERO,
951 .extra2 = SYSCTL_ONE,
952 },
953#endif
954#ifdef CONFIG_NF_CT_PROTO_GRE
955 [NF_SYSCTL_CT_PROTO_TIMEOUT_GRE] = {
956 .procname = "nf_conntrack_gre_timeout",
957 .maxlen = sizeof(unsigned int),
958 .mode = 0644,
959 .proc_handler = proc_dointvec_jiffies,
960 },
961 [NF_SYSCTL_CT_PROTO_TIMEOUT_GRE_STREAM] = {
962 .procname = "nf_conntrack_gre_timeout_stream",
963 .maxlen = sizeof(unsigned int),
964 .mode = 0644,
965 .proc_handler = proc_dointvec_jiffies,
966 },
967#endif
968#ifdef CONFIG_LWTUNNEL
969 [NF_SYSCTL_CT_LWTUNNEL] = {
970 .procname = "nf_hooks_lwtunnel",
971 .data = NULL,
972 .maxlen = sizeof(int),
973 .mode = 0644,
974 .proc_handler = nf_hooks_lwtunnel_sysctl_handler,
975 },
976#endif
977 {}
978};
979
980static struct ctl_table nf_ct_netfilter_table[] = {
981 {
982 .procname = "nf_conntrack_max",
983 .data = &nf_conntrack_max,
984 .maxlen = sizeof(int),
985 .mode = 0644,
986 .proc_handler = proc_dointvec,
987 },
988 { }
989};
990
991static void nf_conntrack_standalone_init_tcp_sysctl(struct net *net,
992 struct ctl_table *table)
993{
994 struct nf_tcp_net *tn = nf_tcp_pernet(net);
995
996#define XASSIGN(XNAME, tn) \
997 table[NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_ ## XNAME].data = \
998 &(tn)->timeouts[TCP_CONNTRACK_ ## XNAME]
999
1000 XASSIGN(SYN_SENT, tn);
1001 XASSIGN(SYN_RECV, tn);
1002 XASSIGN(ESTABLISHED, tn);
1003 XASSIGN(FIN_WAIT, tn);
1004 XASSIGN(CLOSE_WAIT, tn);
1005 XASSIGN(LAST_ACK, tn);
1006 XASSIGN(TIME_WAIT, tn);
1007 XASSIGN(CLOSE, tn);
1008 XASSIGN(RETRANS, tn);
1009 XASSIGN(UNACK, tn);
1010#undef XASSIGN
1011#define XASSIGN(XNAME, rval) \
1012 table[NF_SYSCTL_CT_PROTO_TCP_ ## XNAME].data = (rval)
1013
1014 XASSIGN(LOOSE, &tn->tcp_loose);
1015 XASSIGN(LIBERAL, &tn->tcp_be_liberal);
1016 XASSIGN(MAX_RETRANS, &tn->tcp_max_retrans);
1017 XASSIGN(IGNORE_INVALID_RST, &tn->tcp_ignore_invalid_rst);
1018#undef XASSIGN
1019
1020#if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
1021 table[NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_OFFLOAD].data = &tn->offload_timeout;
1022#endif
1023
1024}
1025
1026static void nf_conntrack_standalone_init_sctp_sysctl(struct net *net,
1027 struct ctl_table *table)
1028{
1029#ifdef CONFIG_NF_CT_PROTO_SCTP
1030 struct nf_sctp_net *sn = nf_sctp_pernet(net);
1031
1032#define XASSIGN(XNAME, sn) \
1033 table[NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_ ## XNAME].data = \
1034 &(sn)->timeouts[SCTP_CONNTRACK_ ## XNAME]
1035
1036 XASSIGN(CLOSED, sn);
1037 XASSIGN(COOKIE_WAIT, sn);
1038 XASSIGN(COOKIE_ECHOED, sn);
1039 XASSIGN(ESTABLISHED, sn);
1040 XASSIGN(SHUTDOWN_SENT, sn);
1041 XASSIGN(SHUTDOWN_RECD, sn);
1042 XASSIGN(SHUTDOWN_ACK_SENT, sn);
1043 XASSIGN(HEARTBEAT_SENT, sn);
1044 XASSIGN(HEARTBEAT_ACKED, sn);
1045#undef XASSIGN
1046#endif
1047}
1048
1049static void nf_conntrack_standalone_init_dccp_sysctl(struct net *net,
1050 struct ctl_table *table)
1051{
1052#ifdef CONFIG_NF_CT_PROTO_DCCP
1053 struct nf_dccp_net *dn = nf_dccp_pernet(net);
1054
1055#define XASSIGN(XNAME, dn) \
1056 table[NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_ ## XNAME].data = \
1057 &(dn)->dccp_timeout[CT_DCCP_ ## XNAME]
1058
1059 XASSIGN(REQUEST, dn);
1060 XASSIGN(RESPOND, dn);
1061 XASSIGN(PARTOPEN, dn);
1062 XASSIGN(OPEN, dn);
1063 XASSIGN(CLOSEREQ, dn);
1064 XASSIGN(CLOSING, dn);
1065 XASSIGN(TIMEWAIT, dn);
1066#undef XASSIGN
1067
1068 table[NF_SYSCTL_CT_PROTO_DCCP_LOOSE].data = &dn->dccp_loose;
1069#endif
1070}
1071
1072static void nf_conntrack_standalone_init_gre_sysctl(struct net *net,
1073 struct ctl_table *table)
1074{
1075#ifdef CONFIG_NF_CT_PROTO_GRE
1076 struct nf_gre_net *gn = nf_gre_pernet(net);
1077
1078 table[NF_SYSCTL_CT_PROTO_TIMEOUT_GRE].data = &gn->timeouts[GRE_CT_UNREPLIED];
1079 table[NF_SYSCTL_CT_PROTO_TIMEOUT_GRE_STREAM].data = &gn->timeouts[GRE_CT_REPLIED];
1080#endif
1081}
1082
1083static int nf_conntrack_standalone_init_sysctl(struct net *net)
1084{
1085 struct nf_conntrack_net *cnet = nf_ct_pernet(net);
1086 struct nf_udp_net *un = nf_udp_pernet(net);
1087 struct ctl_table *table;
1088
1089 BUILD_BUG_ON(ARRAY_SIZE(nf_ct_sysctl_table) != NF_SYSCTL_CT_LAST_SYSCTL);
1090
1091 table = kmemdup(nf_ct_sysctl_table, sizeof(nf_ct_sysctl_table),
1092 GFP_KERNEL);
1093 if (!table)
1094 return -ENOMEM;
1095
1096 table[NF_SYSCTL_CT_COUNT].data = &cnet->count;
1097 table[NF_SYSCTL_CT_CHECKSUM].data = &net->ct.sysctl_checksum;
1098 table[NF_SYSCTL_CT_LOG_INVALID].data = &net->ct.sysctl_log_invalid;
1099 table[NF_SYSCTL_CT_ACCT].data = &net->ct.sysctl_acct;
1100 table[NF_SYSCTL_CT_HELPER].data = &cnet->sysctl_auto_assign_helper;
1101#ifdef CONFIG_NF_CONNTRACK_EVENTS
1102 table[NF_SYSCTL_CT_EVENTS].data = &net->ct.sysctl_events;
1103#endif
1104#ifdef CONFIG_NF_CONNTRACK_TIMESTAMP
1105 table[NF_SYSCTL_CT_TIMESTAMP].data = &net->ct.sysctl_tstamp;
1106#endif
1107 table[NF_SYSCTL_CT_PROTO_TIMEOUT_GENERIC].data = &nf_generic_pernet(net)->timeout;
1108 table[NF_SYSCTL_CT_PROTO_TIMEOUT_ICMP].data = &nf_icmp_pernet(net)->timeout;
1109 table[NF_SYSCTL_CT_PROTO_TIMEOUT_ICMPV6].data = &nf_icmpv6_pernet(net)->timeout;
1110 table[NF_SYSCTL_CT_PROTO_TIMEOUT_UDP].data = &un->timeouts[UDP_CT_UNREPLIED];
1111 table[NF_SYSCTL_CT_PROTO_TIMEOUT_UDP_STREAM].data = &un->timeouts[UDP_CT_REPLIED];
1112#if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
1113 table[NF_SYSCTL_CT_PROTO_TIMEOUT_UDP_OFFLOAD].data = &un->offload_timeout;
1114#endif
1115
1116 nf_conntrack_standalone_init_tcp_sysctl(net, table);
1117 nf_conntrack_standalone_init_sctp_sysctl(net, table);
1118 nf_conntrack_standalone_init_dccp_sysctl(net, table);
1119 nf_conntrack_standalone_init_gre_sysctl(net, table);
1120
1121
1122 if (!net_eq(&init_net, net)) {
1123 table[NF_SYSCTL_CT_MAX].mode = 0444;
1124 table[NF_SYSCTL_CT_EXPECT_MAX].mode = 0444;
1125 table[NF_SYSCTL_CT_BUCKETS].mode = 0444;
1126 }
1127
1128 cnet->sysctl_header = register_net_sysctl(net, "net/netfilter", table);
1129 if (!cnet->sysctl_header)
1130 goto out_unregister_netfilter;
1131
1132 return 0;
1133
1134out_unregister_netfilter:
1135 kfree(table);
1136 return -ENOMEM;
1137}
1138
1139static void nf_conntrack_standalone_fini_sysctl(struct net *net)
1140{
1141 struct nf_conntrack_net *cnet = nf_ct_pernet(net);
1142 struct ctl_table *table;
1143
1144 table = cnet->sysctl_header->ctl_table_arg;
1145 unregister_net_sysctl_table(cnet->sysctl_header);
1146 kfree(table);
1147}
1148#else
1149static int nf_conntrack_standalone_init_sysctl(struct net *net)
1150{
1151 return 0;
1152}
1153
1154static void nf_conntrack_standalone_fini_sysctl(struct net *net)
1155{
1156}
1157#endif
1158
1159static void nf_conntrack_fini_net(struct net *net)
1160{
1161 if (enable_hooks)
1162 nf_ct_netns_put(net, NFPROTO_INET);
1163
1164 nf_conntrack_standalone_fini_proc(net);
1165 nf_conntrack_standalone_fini_sysctl(net);
1166}
1167
1168static int nf_conntrack_pernet_init(struct net *net)
1169{
1170 int ret;
1171
1172 net->ct.sysctl_checksum = 1;
1173
1174 ret = nf_conntrack_standalone_init_sysctl(net);
1175 if (ret < 0)
1176 return ret;
1177
1178 ret = nf_conntrack_standalone_init_proc(net);
1179 if (ret < 0)
1180 goto out_proc;
1181
1182 ret = nf_conntrack_init_net(net);
1183 if (ret < 0)
1184 goto out_init_net;
1185
1186 if (enable_hooks) {
1187 ret = nf_ct_netns_get(net, NFPROTO_INET);
1188 if (ret < 0)
1189 goto out_hooks;
1190 }
1191
1192 return 0;
1193
1194out_hooks:
1195 nf_conntrack_cleanup_net(net);
1196out_init_net:
1197 nf_conntrack_standalone_fini_proc(net);
1198out_proc:
1199 nf_conntrack_standalone_fini_sysctl(net);
1200 return ret;
1201}
1202
1203static void nf_conntrack_pernet_exit(struct list_head *net_exit_list)
1204{
1205 struct net *net;
1206
1207 list_for_each_entry(net, net_exit_list, exit_list)
1208 nf_conntrack_fini_net(net);
1209
1210 nf_conntrack_cleanup_net_list(net_exit_list);
1211}
1212
1213static struct pernet_operations nf_conntrack_net_ops = {
1214 .init = nf_conntrack_pernet_init,
1215 .exit_batch = nf_conntrack_pernet_exit,
1216 .id = &nf_conntrack_net_id,
1217 .size = sizeof(struct nf_conntrack_net),
1218};
1219
1220static int __init nf_conntrack_standalone_init(void)
1221{
1222 int ret = nf_conntrack_init_start();
1223 if (ret < 0)
1224 goto out_start;
1225
1226 BUILD_BUG_ON(NFCT_INFOMASK <= IP_CT_NUMBER);
1227
1228#ifdef CONFIG_SYSCTL
1229 nf_ct_netfilter_header =
1230 register_net_sysctl(&init_net, "net", nf_ct_netfilter_table);
1231 if (!nf_ct_netfilter_header) {
1232 pr_err("nf_conntrack: can't register to sysctl.\n");
1233 ret = -ENOMEM;
1234 goto out_sysctl;
1235 }
1236
1237 nf_conntrack_htable_size_user = nf_conntrack_htable_size;
1238#endif
1239
1240 ret = register_pernet_subsys(&nf_conntrack_net_ops);
1241 if (ret < 0)
1242 goto out_pernet;
1243
1244 nf_conntrack_init_end();
1245 return 0;
1246
1247out_pernet:
1248#ifdef CONFIG_SYSCTL
1249 unregister_net_sysctl_table(nf_ct_netfilter_header);
1250out_sysctl:
1251#endif
1252 nf_conntrack_cleanup_end();
1253out_start:
1254 return ret;
1255}
1256
1257static void __exit nf_conntrack_standalone_fini(void)
1258{
1259 nf_conntrack_cleanup_start();
1260 unregister_pernet_subsys(&nf_conntrack_net_ops);
1261#ifdef CONFIG_SYSCTL
1262 unregister_net_sysctl_table(nf_ct_netfilter_header);
1263#endif
1264 nf_conntrack_cleanup_end();
1265}
1266
1267module_init(nf_conntrack_standalone_init);
1268module_exit(nf_conntrack_standalone_fini);
1269
