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 = nf_ct_pernet(net);
516
517 return atomic_read(&cnet->count);
518}
519EXPORT_SYMBOL_GPL(nf_conntrack_count);
520
521
522
523#ifdef CONFIG_SYSCTL
524
525static unsigned int nf_conntrack_htable_size_user __read_mostly;
526
527static int
528nf_conntrack_hash_sysctl(struct ctl_table *table, int write,
529 void *buffer, size_t *lenp, loff_t *ppos)
530{
531 int ret;
532
533
534 nf_conntrack_htable_size_user = nf_conntrack_htable_size;
535
536 ret = proc_dointvec(table, write, buffer, lenp, ppos);
537 if (ret < 0 || !write)
538 return ret;
539
540
541 ret = nf_conntrack_hash_resize(nf_conntrack_htable_size_user);
542
543
544 nf_conntrack_htable_size_user = nf_conntrack_htable_size;
545 return ret;
546}
547
548static struct ctl_table_header *nf_ct_netfilter_header;
549
550enum nf_ct_sysctl_index {
551 NF_SYSCTL_CT_MAX,
552 NF_SYSCTL_CT_COUNT,
553 NF_SYSCTL_CT_BUCKETS,
554 NF_SYSCTL_CT_CHECKSUM,
555 NF_SYSCTL_CT_LOG_INVALID,
556 NF_SYSCTL_CT_EXPECT_MAX,
557 NF_SYSCTL_CT_ACCT,
558 NF_SYSCTL_CT_HELPER,
559#ifdef CONFIG_NF_CONNTRACK_EVENTS
560 NF_SYSCTL_CT_EVENTS,
561#endif
562#ifdef CONFIG_NF_CONNTRACK_TIMESTAMP
563 NF_SYSCTL_CT_TIMESTAMP,
564#endif
565 NF_SYSCTL_CT_PROTO_TIMEOUT_GENERIC,
566 NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_SYN_SENT,
567 NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_SYN_RECV,
568 NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_ESTABLISHED,
569 NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_FIN_WAIT,
570 NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_CLOSE_WAIT,
571 NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_LAST_ACK,
572 NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_TIME_WAIT,
573 NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_CLOSE,
574 NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_RETRANS,
575 NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_UNACK,
576#if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
577 NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_OFFLOAD,
578#endif
579 NF_SYSCTL_CT_PROTO_TCP_LOOSE,
580 NF_SYSCTL_CT_PROTO_TCP_LIBERAL,
581 NF_SYSCTL_CT_PROTO_TCP_IGNORE_INVALID_RST,
582 NF_SYSCTL_CT_PROTO_TCP_MAX_RETRANS,
583 NF_SYSCTL_CT_PROTO_TIMEOUT_UDP,
584 NF_SYSCTL_CT_PROTO_TIMEOUT_UDP_STREAM,
585#if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
586 NF_SYSCTL_CT_PROTO_TIMEOUT_UDP_OFFLOAD,
587#endif
588 NF_SYSCTL_CT_PROTO_TIMEOUT_ICMP,
589 NF_SYSCTL_CT_PROTO_TIMEOUT_ICMPV6,
590#ifdef CONFIG_NF_CT_PROTO_SCTP
591 NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_CLOSED,
592 NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_COOKIE_WAIT,
593 NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_COOKIE_ECHOED,
594 NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_ESTABLISHED,
595 NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_SHUTDOWN_SENT,
596 NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_SHUTDOWN_RECD,
597 NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_SHUTDOWN_ACK_SENT,
598 NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_HEARTBEAT_SENT,
599 NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_HEARTBEAT_ACKED,
600#endif
601#ifdef CONFIG_NF_CT_PROTO_DCCP
602 NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_REQUEST,
603 NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_RESPOND,
604 NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_PARTOPEN,
605 NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_OPEN,
606 NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_CLOSEREQ,
607 NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_CLOSING,
608 NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_TIMEWAIT,
609 NF_SYSCTL_CT_PROTO_DCCP_LOOSE,
610#endif
611#ifdef CONFIG_NF_CT_PROTO_GRE
612 NF_SYSCTL_CT_PROTO_TIMEOUT_GRE,
613 NF_SYSCTL_CT_PROTO_TIMEOUT_GRE_STREAM,
614#endif
615
616 __NF_SYSCTL_CT_LAST_SYSCTL,
617};
618
619#define NF_SYSCTL_CT_LAST_SYSCTL (__NF_SYSCTL_CT_LAST_SYSCTL + 1)
620
621static struct ctl_table nf_ct_sysctl_table[] = {
622 [NF_SYSCTL_CT_MAX] = {
623 .procname = "nf_conntrack_max",
624 .data = &nf_conntrack_max,
625 .maxlen = sizeof(int),
626 .mode = 0644,
627 .proc_handler = proc_dointvec,
628 },
629 [NF_SYSCTL_CT_COUNT] = {
630 .procname = "nf_conntrack_count",
631 .maxlen = sizeof(int),
632 .mode = 0444,
633 .proc_handler = proc_dointvec,
634 },
635 [NF_SYSCTL_CT_BUCKETS] = {
636 .procname = "nf_conntrack_buckets",
637 .data = &nf_conntrack_htable_size_user,
638 .maxlen = sizeof(unsigned int),
639 .mode = 0644,
640 .proc_handler = nf_conntrack_hash_sysctl,
641 },
642 [NF_SYSCTL_CT_CHECKSUM] = {
643 .procname = "nf_conntrack_checksum",
644 .data = &init_net.ct.sysctl_checksum,
645 .maxlen = sizeof(u8),
646 .mode = 0644,
647 .proc_handler = proc_dou8vec_minmax,
648 .extra1 = SYSCTL_ZERO,
649 .extra2 = SYSCTL_ONE,
650 },
651 [NF_SYSCTL_CT_LOG_INVALID] = {
652 .procname = "nf_conntrack_log_invalid",
653 .data = &init_net.ct.sysctl_log_invalid,
654 .maxlen = sizeof(u8),
655 .mode = 0644,
656 .proc_handler = proc_dou8vec_minmax,
657 },
658 [NF_SYSCTL_CT_EXPECT_MAX] = {
659 .procname = "nf_conntrack_expect_max",
660 .data = &nf_ct_expect_max,
661 .maxlen = sizeof(int),
662 .mode = 0644,
663 .proc_handler = proc_dointvec,
664 },
665 [NF_SYSCTL_CT_ACCT] = {
666 .procname = "nf_conntrack_acct",
667 .data = &init_net.ct.sysctl_acct,
668 .maxlen = sizeof(u8),
669 .mode = 0644,
670 .proc_handler = proc_dou8vec_minmax,
671 .extra1 = SYSCTL_ZERO,
672 .extra2 = SYSCTL_ONE,
673 },
674 [NF_SYSCTL_CT_HELPER] = {
675 .procname = "nf_conntrack_helper",
676 .maxlen = sizeof(u8),
677 .mode = 0644,
678 .proc_handler = proc_dou8vec_minmax,
679 .extra1 = SYSCTL_ZERO,
680 .extra2 = SYSCTL_ONE,
681 },
682#ifdef CONFIG_NF_CONNTRACK_EVENTS
683 [NF_SYSCTL_CT_EVENTS] = {
684 .procname = "nf_conntrack_events",
685 .data = &init_net.ct.sysctl_events,
686 .maxlen = sizeof(u8),
687 .mode = 0644,
688 .proc_handler = proc_dou8vec_minmax,
689 .extra1 = SYSCTL_ZERO,
690 .extra2 = SYSCTL_ONE,
691 },
692#endif
693#ifdef CONFIG_NF_CONNTRACK_TIMESTAMP
694 [NF_SYSCTL_CT_TIMESTAMP] = {
695 .procname = "nf_conntrack_timestamp",
696 .data = &init_net.ct.sysctl_tstamp,
697 .maxlen = sizeof(u8),
698 .mode = 0644,
699 .proc_handler = proc_dou8vec_minmax,
700 .extra1 = SYSCTL_ZERO,
701 .extra2 = SYSCTL_ONE,
702 },
703#endif
704 [NF_SYSCTL_CT_PROTO_TIMEOUT_GENERIC] = {
705 .procname = "nf_conntrack_generic_timeout",
706 .maxlen = sizeof(unsigned int),
707 .mode = 0644,
708 .proc_handler = proc_dointvec_jiffies,
709 },
710 [NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_SYN_SENT] = {
711 .procname = "nf_conntrack_tcp_timeout_syn_sent",
712 .maxlen = sizeof(unsigned int),
713 .mode = 0644,
714 .proc_handler = proc_dointvec_jiffies,
715 },
716 [NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_SYN_RECV] = {
717 .procname = "nf_conntrack_tcp_timeout_syn_recv",
718 .maxlen = sizeof(unsigned int),
719 .mode = 0644,
720 .proc_handler = proc_dointvec_jiffies,
721 },
722 [NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_ESTABLISHED] = {
723 .procname = "nf_conntrack_tcp_timeout_established",
724 .maxlen = sizeof(unsigned int),
725 .mode = 0644,
726 .proc_handler = proc_dointvec_jiffies,
727 },
728 [NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_FIN_WAIT] = {
729 .procname = "nf_conntrack_tcp_timeout_fin_wait",
730 .maxlen = sizeof(unsigned int),
731 .mode = 0644,
732 .proc_handler = proc_dointvec_jiffies,
733 },
734 [NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_CLOSE_WAIT] = {
735 .procname = "nf_conntrack_tcp_timeout_close_wait",
736 .maxlen = sizeof(unsigned int),
737 .mode = 0644,
738 .proc_handler = proc_dointvec_jiffies,
739 },
740 [NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_LAST_ACK] = {
741 .procname = "nf_conntrack_tcp_timeout_last_ack",
742 .maxlen = sizeof(unsigned int),
743 .mode = 0644,
744 .proc_handler = proc_dointvec_jiffies,
745 },
746 [NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_TIME_WAIT] = {
747 .procname = "nf_conntrack_tcp_timeout_time_wait",
748 .maxlen = sizeof(unsigned int),
749 .mode = 0644,
750 .proc_handler = proc_dointvec_jiffies,
751 },
752 [NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_CLOSE] = {
753 .procname = "nf_conntrack_tcp_timeout_close",
754 .maxlen = sizeof(unsigned int),
755 .mode = 0644,
756 .proc_handler = proc_dointvec_jiffies,
757 },
758 [NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_RETRANS] = {
759 .procname = "nf_conntrack_tcp_timeout_max_retrans",
760 .maxlen = sizeof(unsigned int),
761 .mode = 0644,
762 .proc_handler = proc_dointvec_jiffies,
763 },
764 [NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_UNACK] = {
765 .procname = "nf_conntrack_tcp_timeout_unacknowledged",
766 .maxlen = sizeof(unsigned int),
767 .mode = 0644,
768 .proc_handler = proc_dointvec_jiffies,
769 },
770#if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
771 [NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_OFFLOAD] = {
772 .procname = "nf_flowtable_tcp_timeout",
773 .maxlen = sizeof(unsigned int),
774 .mode = 0644,
775 .proc_handler = proc_dointvec_jiffies,
776 },
777#endif
778 [NF_SYSCTL_CT_PROTO_TCP_LOOSE] = {
779 .procname = "nf_conntrack_tcp_loose",
780 .maxlen = sizeof(u8),
781 .mode = 0644,
782 .proc_handler = proc_dou8vec_minmax,
783 .extra1 = SYSCTL_ZERO,
784 .extra2 = SYSCTL_ONE,
785 },
786 [NF_SYSCTL_CT_PROTO_TCP_LIBERAL] = {
787 .procname = "nf_conntrack_tcp_be_liberal",
788 .maxlen = sizeof(u8),
789 .mode = 0644,
790 .proc_handler = proc_dou8vec_minmax,
791 .extra1 = SYSCTL_ZERO,
792 .extra2 = SYSCTL_ONE,
793 },
794 [NF_SYSCTL_CT_PROTO_TCP_IGNORE_INVALID_RST] = {
795 .procname = "nf_conntrack_tcp_ignore_invalid_rst",
796 .maxlen = sizeof(u8),
797 .mode = 0644,
798 .proc_handler = proc_dou8vec_minmax,
799 .extra1 = SYSCTL_ZERO,
800 .extra2 = SYSCTL_ONE,
801 },
802 [NF_SYSCTL_CT_PROTO_TCP_MAX_RETRANS] = {
803 .procname = "nf_conntrack_tcp_max_retrans",
804 .maxlen = sizeof(u8),
805 .mode = 0644,
806 .proc_handler = proc_dou8vec_minmax,
807 },
808 [NF_SYSCTL_CT_PROTO_TIMEOUT_UDP] = {
809 .procname = "nf_conntrack_udp_timeout",
810 .maxlen = sizeof(unsigned int),
811 .mode = 0644,
812 .proc_handler = proc_dointvec_jiffies,
813 },
814 [NF_SYSCTL_CT_PROTO_TIMEOUT_UDP_STREAM] = {
815 .procname = "nf_conntrack_udp_timeout_stream",
816 .maxlen = sizeof(unsigned int),
817 .mode = 0644,
818 .proc_handler = proc_dointvec_jiffies,
819 },
820#if IS_ENABLED(CONFIG_NFT_FLOW_OFFLOAD)
821 [NF_SYSCTL_CT_PROTO_TIMEOUT_UDP_OFFLOAD] = {
822 .procname = "nf_flowtable_udp_timeout",
823 .maxlen = sizeof(unsigned int),
824 .mode = 0644,
825 .proc_handler = proc_dointvec_jiffies,
826 },
827#endif
828 [NF_SYSCTL_CT_PROTO_TIMEOUT_ICMP] = {
829 .procname = "nf_conntrack_icmp_timeout",
830 .maxlen = sizeof(unsigned int),
831 .mode = 0644,
832 .proc_handler = proc_dointvec_jiffies,
833 },
834 [NF_SYSCTL_CT_PROTO_TIMEOUT_ICMPV6] = {
835 .procname = "nf_conntrack_icmpv6_timeout",
836 .maxlen = sizeof(unsigned int),
837 .mode = 0644,
838 .proc_handler = proc_dointvec_jiffies,
839 },
840#ifdef CONFIG_NF_CT_PROTO_SCTP
841 [NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_CLOSED] = {
842 .procname = "nf_conntrack_sctp_timeout_closed",
843 .maxlen = sizeof(unsigned int),
844 .mode = 0644,
845 .proc_handler = proc_dointvec_jiffies,
846 },
847 [NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_COOKIE_WAIT] = {
848 .procname = "nf_conntrack_sctp_timeout_cookie_wait",
849 .maxlen = sizeof(unsigned int),
850 .mode = 0644,
851 .proc_handler = proc_dointvec_jiffies,
852 },
853 [NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_COOKIE_ECHOED] = {
854 .procname = "nf_conntrack_sctp_timeout_cookie_echoed",
855 .maxlen = sizeof(unsigned int),
856 .mode = 0644,
857 .proc_handler = proc_dointvec_jiffies,
858 },
859 [NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_ESTABLISHED] = {
860 .procname = "nf_conntrack_sctp_timeout_established",
861 .maxlen = sizeof(unsigned int),
862 .mode = 0644,
863 .proc_handler = proc_dointvec_jiffies,
864 },
865 [NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_SHUTDOWN_SENT] = {
866 .procname = "nf_conntrack_sctp_timeout_shutdown_sent",
867 .maxlen = sizeof(unsigned int),
868 .mode = 0644,
869 .proc_handler = proc_dointvec_jiffies,
870 },
871 [NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_SHUTDOWN_RECD] = {
872 .procname = "nf_conntrack_sctp_timeout_shutdown_recd",
873 .maxlen = sizeof(unsigned int),
874 .mode = 0644,
875 .proc_handler = proc_dointvec_jiffies,
876 },
877 [NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_SHUTDOWN_ACK_SENT] = {
878 .procname = "nf_conntrack_sctp_timeout_shutdown_ack_sent",
879 .maxlen = sizeof(unsigned int),
880 .mode = 0644,
881 .proc_handler = proc_dointvec_jiffies,
882 },
883 [NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_HEARTBEAT_SENT] = {
884 .procname = "nf_conntrack_sctp_timeout_heartbeat_sent",
885 .maxlen = sizeof(unsigned int),
886 .mode = 0644,
887 .proc_handler = proc_dointvec_jiffies,
888 },
889 [NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_HEARTBEAT_ACKED] = {
890 .procname = "nf_conntrack_sctp_timeout_heartbeat_acked",
891 .maxlen = sizeof(unsigned int),
892 .mode = 0644,
893 .proc_handler = proc_dointvec_jiffies,
894 },
895#endif
896#ifdef CONFIG_NF_CT_PROTO_DCCP
897 [NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_REQUEST] = {
898 .procname = "nf_conntrack_dccp_timeout_request",
899 .maxlen = sizeof(unsigned int),
900 .mode = 0644,
901 .proc_handler = proc_dointvec_jiffies,
902 },
903 [NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_RESPOND] = {
904 .procname = "nf_conntrack_dccp_timeout_respond",
905 .maxlen = sizeof(unsigned int),
906 .mode = 0644,
907 .proc_handler = proc_dointvec_jiffies,
908 },
909 [NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_PARTOPEN] = {
910 .procname = "nf_conntrack_dccp_timeout_partopen",
911 .maxlen = sizeof(unsigned int),
912 .mode = 0644,
913 .proc_handler = proc_dointvec_jiffies,
914 },
915 [NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_OPEN] = {
916 .procname = "nf_conntrack_dccp_timeout_open",
917 .maxlen = sizeof(unsigned int),
918 .mode = 0644,
919 .proc_handler = proc_dointvec_jiffies,
920 },
921 [NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_CLOSEREQ] = {
922 .procname = "nf_conntrack_dccp_timeout_closereq",
923 .maxlen = sizeof(unsigned int),
924 .mode = 0644,
925 .proc_handler = proc_dointvec_jiffies,
926 },
927 [NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_CLOSING] = {
928 .procname = "nf_conntrack_dccp_timeout_closing",
929 .maxlen = sizeof(unsigned int),
930 .mode = 0644,
931 .proc_handler = proc_dointvec_jiffies,
932 },
933 [NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_TIMEWAIT] = {
934 .procname = "nf_conntrack_dccp_timeout_timewait",
935 .maxlen = sizeof(unsigned int),
936 .mode = 0644,
937 .proc_handler = proc_dointvec_jiffies,
938 },
939 [NF_SYSCTL_CT_PROTO_DCCP_LOOSE] = {
940 .procname = "nf_conntrack_dccp_loose",
941 .maxlen = sizeof(u8),
942 .mode = 0644,
943 .proc_handler = proc_dou8vec_minmax,
944 .extra1 = SYSCTL_ZERO,
945 .extra2 = SYSCTL_ONE,
946 },
947#endif
948#ifdef CONFIG_NF_CT_PROTO_GRE
949 [NF_SYSCTL_CT_PROTO_TIMEOUT_GRE] = {
950 .procname = "nf_conntrack_gre_timeout",
951 .maxlen = sizeof(unsigned int),
952 .mode = 0644,
953 .proc_handler = proc_dointvec_jiffies,
954 },
955 [NF_SYSCTL_CT_PROTO_TIMEOUT_GRE_STREAM] = {
956 .procname = "nf_conntrack_gre_timeout_stream",
957 .maxlen = sizeof(unsigned int),
958 .mode = 0644,
959 .proc_handler = proc_dointvec_jiffies,
960 },
961#endif
962 {}
963};
964
965static struct ctl_table nf_ct_netfilter_table[] = {
966 {
967 .procname = "nf_conntrack_max",
968 .data = &nf_conntrack_max,
969 .maxlen = sizeof(int),
970 .mode = 0644,
971 .proc_handler = proc_dointvec,
972 },
973 { }
974};
975
976static void nf_conntrack_standalone_init_tcp_sysctl(struct net *net,
977 struct ctl_table *table)
978{
979 struct nf_tcp_net *tn = nf_tcp_pernet(net);
980
981#define XASSIGN(XNAME, tn) \
982 table[NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_ ## XNAME].data = \
983 &(tn)->timeouts[TCP_CONNTRACK_ ## XNAME]
984
985 XASSIGN(SYN_SENT, tn);
986 XASSIGN(SYN_RECV, tn);
987 XASSIGN(ESTABLISHED, tn);
988 XASSIGN(FIN_WAIT, tn);
989 XASSIGN(CLOSE_WAIT, tn);
990 XASSIGN(LAST_ACK, tn);
991 XASSIGN(TIME_WAIT, tn);
992 XASSIGN(CLOSE, tn);
993 XASSIGN(RETRANS, tn);
994 XASSIGN(UNACK, tn);
995#undef XASSIGN
996#define XASSIGN(XNAME, rval) \
997 table[NF_SYSCTL_CT_PROTO_TCP_ ## XNAME].data = (rval)
998
999 XASSIGN(LOOSE, &tn->tcp_loose);
1000 XASSIGN(LIBERAL, &tn->tcp_be_liberal);
1001 XASSIGN(MAX_RETRANS, &tn->tcp_max_retrans);
1002 XASSIGN(IGNORE_INVALID_RST, &tn->tcp_ignore_invalid_rst);
1003#undef XASSIGN
1004
1005#if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
1006 table[NF_SYSCTL_CT_PROTO_TIMEOUT_TCP_OFFLOAD].data = &tn->offload_timeout;
1007#endif
1008
1009}
1010
1011static void nf_conntrack_standalone_init_sctp_sysctl(struct net *net,
1012 struct ctl_table *table)
1013{
1014#ifdef CONFIG_NF_CT_PROTO_SCTP
1015 struct nf_sctp_net *sn = nf_sctp_pernet(net);
1016
1017#define XASSIGN(XNAME, sn) \
1018 table[NF_SYSCTL_CT_PROTO_TIMEOUT_SCTP_ ## XNAME].data = \
1019 &(sn)->timeouts[SCTP_CONNTRACK_ ## XNAME]
1020
1021 XASSIGN(CLOSED, sn);
1022 XASSIGN(COOKIE_WAIT, sn);
1023 XASSIGN(COOKIE_ECHOED, sn);
1024 XASSIGN(ESTABLISHED, sn);
1025 XASSIGN(SHUTDOWN_SENT, sn);
1026 XASSIGN(SHUTDOWN_RECD, sn);
1027 XASSIGN(SHUTDOWN_ACK_SENT, sn);
1028 XASSIGN(HEARTBEAT_SENT, sn);
1029 XASSIGN(HEARTBEAT_ACKED, sn);
1030#undef XASSIGN
1031#endif
1032}
1033
1034static void nf_conntrack_standalone_init_dccp_sysctl(struct net *net,
1035 struct ctl_table *table)
1036{
1037#ifdef CONFIG_NF_CT_PROTO_DCCP
1038 struct nf_dccp_net *dn = nf_dccp_pernet(net);
1039
1040#define XASSIGN(XNAME, dn) \
1041 table[NF_SYSCTL_CT_PROTO_TIMEOUT_DCCP_ ## XNAME].data = \
1042 &(dn)->dccp_timeout[CT_DCCP_ ## XNAME]
1043
1044 XASSIGN(REQUEST, dn);
1045 XASSIGN(RESPOND, dn);
1046 XASSIGN(PARTOPEN, dn);
1047 XASSIGN(OPEN, dn);
1048 XASSIGN(CLOSEREQ, dn);
1049 XASSIGN(CLOSING, dn);
1050 XASSIGN(TIMEWAIT, dn);
1051#undef XASSIGN
1052
1053 table[NF_SYSCTL_CT_PROTO_DCCP_LOOSE].data = &dn->dccp_loose;
1054#endif
1055}
1056
1057static void nf_conntrack_standalone_init_gre_sysctl(struct net *net,
1058 struct ctl_table *table)
1059{
1060#ifdef CONFIG_NF_CT_PROTO_GRE
1061 struct nf_gre_net *gn = nf_gre_pernet(net);
1062
1063 table[NF_SYSCTL_CT_PROTO_TIMEOUT_GRE].data = &gn->timeouts[GRE_CT_UNREPLIED];
1064 table[NF_SYSCTL_CT_PROTO_TIMEOUT_GRE_STREAM].data = &gn->timeouts[GRE_CT_REPLIED];
1065#endif
1066}
1067
1068static int nf_conntrack_standalone_init_sysctl(struct net *net)
1069{
1070 struct nf_conntrack_net *cnet = nf_ct_pernet(net);
1071 struct nf_udp_net *un = nf_udp_pernet(net);
1072 struct ctl_table *table;
1073
1074 BUILD_BUG_ON(ARRAY_SIZE(nf_ct_sysctl_table) != NF_SYSCTL_CT_LAST_SYSCTL);
1075
1076 table = kmemdup(nf_ct_sysctl_table, sizeof(nf_ct_sysctl_table),
1077 GFP_KERNEL);
1078 if (!table)
1079 return -ENOMEM;
1080
1081 table[NF_SYSCTL_CT_COUNT].data = &cnet->count;
1082 table[NF_SYSCTL_CT_CHECKSUM].data = &net->ct.sysctl_checksum;
1083 table[NF_SYSCTL_CT_LOG_INVALID].data = &net->ct.sysctl_log_invalid;
1084 table[NF_SYSCTL_CT_ACCT].data = &net->ct.sysctl_acct;
1085 table[NF_SYSCTL_CT_HELPER].data = &cnet->sysctl_auto_assign_helper;
1086#ifdef CONFIG_NF_CONNTRACK_EVENTS
1087 table[NF_SYSCTL_CT_EVENTS].data = &net->ct.sysctl_events;
1088#endif
1089#ifdef CONFIG_NF_CONNTRACK_TIMESTAMP
1090 table[NF_SYSCTL_CT_TIMESTAMP].data = &net->ct.sysctl_tstamp;
1091#endif
1092 table[NF_SYSCTL_CT_PROTO_TIMEOUT_GENERIC].data = &nf_generic_pernet(net)->timeout;
1093 table[NF_SYSCTL_CT_PROTO_TIMEOUT_ICMP].data = &nf_icmp_pernet(net)->timeout;
1094 table[NF_SYSCTL_CT_PROTO_TIMEOUT_ICMPV6].data = &nf_icmpv6_pernet(net)->timeout;
1095 table[NF_SYSCTL_CT_PROTO_TIMEOUT_UDP].data = &un->timeouts[UDP_CT_UNREPLIED];
1096 table[NF_SYSCTL_CT_PROTO_TIMEOUT_UDP_STREAM].data = &un->timeouts[UDP_CT_REPLIED];
1097#if IS_ENABLED(CONFIG_NF_FLOW_TABLE)
1098 table[NF_SYSCTL_CT_PROTO_TIMEOUT_UDP_OFFLOAD].data = &un->offload_timeout;
1099#endif
1100
1101 nf_conntrack_standalone_init_tcp_sysctl(net, table);
1102 nf_conntrack_standalone_init_sctp_sysctl(net, table);
1103 nf_conntrack_standalone_init_dccp_sysctl(net, table);
1104 nf_conntrack_standalone_init_gre_sysctl(net, table);
1105
1106
1107 if (!net_eq(&init_net, net)) {
1108 table[NF_SYSCTL_CT_MAX].mode = 0444;
1109 table[NF_SYSCTL_CT_EXPECT_MAX].mode = 0444;
1110 table[NF_SYSCTL_CT_BUCKETS].mode = 0444;
1111 }
1112
1113 cnet->sysctl_header = register_net_sysctl(net, "net/netfilter", table);
1114 if (!cnet->sysctl_header)
1115 goto out_unregister_netfilter;
1116
1117 return 0;
1118
1119out_unregister_netfilter:
1120 kfree(table);
1121 return -ENOMEM;
1122}
1123
1124static void nf_conntrack_standalone_fini_sysctl(struct net *net)
1125{
1126 struct nf_conntrack_net *cnet = nf_ct_pernet(net);
1127 struct ctl_table *table;
1128
1129 table = cnet->sysctl_header->ctl_table_arg;
1130 unregister_net_sysctl_table(cnet->sysctl_header);
1131 kfree(table);
1132}
1133#else
1134static int nf_conntrack_standalone_init_sysctl(struct net *net)
1135{
1136 return 0;
1137}
1138
1139static void nf_conntrack_standalone_fini_sysctl(struct net *net)
1140{
1141}
1142#endif
1143
1144static void nf_conntrack_fini_net(struct net *net)
1145{
1146 if (enable_hooks)
1147 nf_ct_netns_put(net, NFPROTO_INET);
1148
1149 nf_conntrack_standalone_fini_proc(net);
1150 nf_conntrack_standalone_fini_sysctl(net);
1151}
1152
1153static int nf_conntrack_pernet_init(struct net *net)
1154{
1155 int ret;
1156
1157 net->ct.sysctl_checksum = 1;
1158
1159 ret = nf_conntrack_standalone_init_sysctl(net);
1160 if (ret < 0)
1161 return ret;
1162
1163 ret = nf_conntrack_standalone_init_proc(net);
1164 if (ret < 0)
1165 goto out_proc;
1166
1167 ret = nf_conntrack_init_net(net);
1168 if (ret < 0)
1169 goto out_init_net;
1170
1171 if (enable_hooks) {
1172 ret = nf_ct_netns_get(net, NFPROTO_INET);
1173 if (ret < 0)
1174 goto out_hooks;
1175 }
1176
1177 return 0;
1178
1179out_hooks:
1180 nf_conntrack_cleanup_net(net);
1181out_init_net:
1182 nf_conntrack_standalone_fini_proc(net);
1183out_proc:
1184 nf_conntrack_standalone_fini_sysctl(net);
1185 return ret;
1186}
1187
1188static void nf_conntrack_pernet_exit(struct list_head *net_exit_list)
1189{
1190 struct net *net;
1191
1192 list_for_each_entry(net, net_exit_list, exit_list)
1193 nf_conntrack_fini_net(net);
1194
1195 nf_conntrack_cleanup_net_list(net_exit_list);
1196}
1197
1198static struct pernet_operations nf_conntrack_net_ops = {
1199 .init = nf_conntrack_pernet_init,
1200 .exit_batch = nf_conntrack_pernet_exit,
1201 .id = &nf_conntrack_net_id,
1202 .size = sizeof(struct nf_conntrack_net),
1203};
1204
1205static int __init nf_conntrack_standalone_init(void)
1206{
1207 int ret = nf_conntrack_init_start();
1208 if (ret < 0)
1209 goto out_start;
1210
1211 BUILD_BUG_ON(NFCT_INFOMASK <= IP_CT_NUMBER);
1212
1213#ifdef CONFIG_SYSCTL
1214 nf_ct_netfilter_header =
1215 register_net_sysctl(&init_net, "net", nf_ct_netfilter_table);
1216 if (!nf_ct_netfilter_header) {
1217 pr_err("nf_conntrack: can't register to sysctl.\n");
1218 ret = -ENOMEM;
1219 goto out_sysctl;
1220 }
1221
1222 nf_conntrack_htable_size_user = nf_conntrack_htable_size;
1223#endif
1224
1225 ret = register_pernet_subsys(&nf_conntrack_net_ops);
1226 if (ret < 0)
1227 goto out_pernet;
1228
1229 nf_conntrack_init_end();
1230 return 0;
1231
1232out_pernet:
1233#ifdef CONFIG_SYSCTL
1234 unregister_net_sysctl_table(nf_ct_netfilter_header);
1235out_sysctl:
1236#endif
1237 nf_conntrack_cleanup_end();
1238out_start:
1239 return ret;
1240}
1241
1242static void __exit nf_conntrack_standalone_fini(void)
1243{
1244 nf_conntrack_cleanup_start();
1245 unregister_pernet_subsys(&nf_conntrack_net_ops);
1246#ifdef CONFIG_SYSCTL
1247 unregister_net_sysctl_table(nf_ct_netfilter_header);
1248#endif
1249 nf_conntrack_cleanup_end();
1250}
1251
1252module_init(nf_conntrack_standalone_init);
1253module_exit(nf_conntrack_standalone_fini);
1254
