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