Commit | Line | Data |
---|---|---|
9fb9cbb1 YK |
1 | /* (C) 1999-2001 Paul `Rusty' Russell |
2 | * (C) 2002-2004 Netfilter Core Team <coreteam@netfilter.org> | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License version 2 as | |
6 | * published by the Free Software Foundation. | |
9fb9cbb1 YK |
7 | */ |
8 | ||
9fb9cbb1 YK |
9 | #include <linux/types.h> |
10 | #include <linux/netfilter.h> | |
11 | #include <linux/module.h> | |
12 | #include <linux/skbuff.h> | |
13 | #include <linux/proc_fs.h> | |
14 | #include <linux/seq_file.h> | |
15 | #include <linux/percpu.h> | |
16 | #include <linux/netdevice.h> | |
457c4cbc | 17 | #include <net/net_namespace.h> |
9fb9cbb1 YK |
18 | #ifdef CONFIG_SYSCTL |
19 | #include <linux/sysctl.h> | |
20 | #endif | |
21 | ||
9fb9cbb1 | 22 | #include <net/netfilter/nf_conntrack.h> |
f6180121 | 23 | #include <net/netfilter/nf_conntrack_core.h> |
9fb9cbb1 | 24 | #include <net/netfilter/nf_conntrack_l3proto.h> |
605dcad6 | 25 | #include <net/netfilter/nf_conntrack_l4proto.h> |
77ab9cff | 26 | #include <net/netfilter/nf_conntrack_expect.h> |
9fb9cbb1 | 27 | #include <net/netfilter/nf_conntrack_helper.h> |
58401572 | 28 | #include <net/netfilter/nf_conntrack_acct.h> |
9fb9cbb1 | 29 | |
9fb9cbb1 YK |
30 | MODULE_LICENSE("GPL"); |
31 | ||
9fb9cbb1 | 32 | #ifdef CONFIG_PROC_FS |
77ab9cff | 33 | int |
9fb9cbb1 | 34 | print_tuple(struct seq_file *s, const struct nf_conntrack_tuple *tuple, |
32948588 JE |
35 | const struct nf_conntrack_l3proto *l3proto, |
36 | const struct nf_conntrack_l4proto *l4proto) | |
9fb9cbb1 | 37 | { |
605dcad6 | 38 | return l3proto->print_tuple(s, tuple) || l4proto->print_tuple(s, tuple); |
9fb9cbb1 | 39 | } |
e4bd8bce | 40 | EXPORT_SYMBOL_GPL(print_tuple); |
9fb9cbb1 | 41 | |
9fb9cbb1 | 42 | struct ct_iter_state { |
b2ce2c74 | 43 | struct seq_net_private p; |
9fb9cbb1 YK |
44 | unsigned int bucket; |
45 | }; | |
46 | ||
f205c5e0 | 47 | static struct hlist_node *ct_get_first(struct seq_file *seq) |
9fb9cbb1 | 48 | { |
b2ce2c74 | 49 | struct net *net = seq_file_net(seq); |
9fb9cbb1 | 50 | struct ct_iter_state *st = seq->private; |
76507f69 | 51 | struct hlist_node *n; |
9fb9cbb1 YK |
52 | |
53 | for (st->bucket = 0; | |
54 | st->bucket < nf_conntrack_htable_size; | |
55 | st->bucket++) { | |
b2ce2c74 | 56 | n = rcu_dereference(net->ct.hash[st->bucket].first); |
76507f69 PM |
57 | if (n) |
58 | return n; | |
9fb9cbb1 YK |
59 | } |
60 | return NULL; | |
61 | } | |
62 | ||
f205c5e0 PM |
63 | static struct hlist_node *ct_get_next(struct seq_file *seq, |
64 | struct hlist_node *head) | |
9fb9cbb1 | 65 | { |
b2ce2c74 | 66 | struct net *net = seq_file_net(seq); |
9fb9cbb1 YK |
67 | struct ct_iter_state *st = seq->private; |
68 | ||
76507f69 | 69 | head = rcu_dereference(head->next); |
f205c5e0 | 70 | while (head == NULL) { |
9fb9cbb1 YK |
71 | if (++st->bucket >= nf_conntrack_htable_size) |
72 | return NULL; | |
b2ce2c74 | 73 | head = rcu_dereference(net->ct.hash[st->bucket].first); |
9fb9cbb1 YK |
74 | } |
75 | return head; | |
76 | } | |
77 | ||
f205c5e0 | 78 | static struct hlist_node *ct_get_idx(struct seq_file *seq, loff_t pos) |
9fb9cbb1 | 79 | { |
f205c5e0 | 80 | struct hlist_node *head = ct_get_first(seq); |
9fb9cbb1 YK |
81 | |
82 | if (head) | |
83 | while (pos && (head = ct_get_next(seq, head))) | |
84 | pos--; | |
85 | return pos ? NULL : head; | |
86 | } | |
87 | ||
88 | static void *ct_seq_start(struct seq_file *seq, loff_t *pos) | |
76507f69 | 89 | __acquires(RCU) |
9fb9cbb1 | 90 | { |
76507f69 | 91 | rcu_read_lock(); |
9fb9cbb1 YK |
92 | return ct_get_idx(seq, *pos); |
93 | } | |
94 | ||
95 | static void *ct_seq_next(struct seq_file *s, void *v, loff_t *pos) | |
96 | { | |
97 | (*pos)++; | |
98 | return ct_get_next(s, v); | |
99 | } | |
100 | ||
101 | static void ct_seq_stop(struct seq_file *s, void *v) | |
76507f69 | 102 | __releases(RCU) |
9fb9cbb1 | 103 | { |
76507f69 | 104 | rcu_read_unlock(); |
9fb9cbb1 YK |
105 | } |
106 | ||
107 | /* return 0 on success, 1 in case of error */ | |
108 | static int ct_seq_show(struct seq_file *s, void *v) | |
109 | { | |
110 | const struct nf_conntrack_tuple_hash *hash = v; | |
c88130bc | 111 | const struct nf_conn *ct = nf_ct_tuplehash_to_ctrack(hash); |
32948588 JE |
112 | const struct nf_conntrack_l3proto *l3proto; |
113 | const struct nf_conntrack_l4proto *l4proto; | |
9fb9cbb1 | 114 | |
c88130bc | 115 | NF_CT_ASSERT(ct); |
9fb9cbb1 YK |
116 | |
117 | /* we only want to print DIR_ORIGINAL */ | |
118 | if (NF_CT_DIRECTION(hash)) | |
119 | return 0; | |
120 | ||
5e8fbe2a | 121 | l3proto = __nf_ct_l3proto_find(nf_ct_l3num(ct)); |
9fb9cbb1 | 122 | NF_CT_ASSERT(l3proto); |
5e8fbe2a | 123 | l4proto = __nf_ct_l4proto_find(nf_ct_l3num(ct), nf_ct_protonum(ct)); |
605dcad6 | 124 | NF_CT_ASSERT(l4proto); |
9fb9cbb1 YK |
125 | |
126 | if (seq_printf(s, "%-8s %u %-8s %u %ld ", | |
5e8fbe2a PM |
127 | l3proto->name, nf_ct_l3num(ct), |
128 | l4proto->name, nf_ct_protonum(ct), | |
c88130bc PM |
129 | timer_pending(&ct->timeout) |
130 | ? (long)(ct->timeout.expires - jiffies)/HZ : 0) != 0) | |
9fb9cbb1 YK |
131 | return -ENOSPC; |
132 | ||
c88130bc | 133 | if (l4proto->print_conntrack && l4proto->print_conntrack(s, ct)) |
9fb9cbb1 YK |
134 | return -ENOSPC; |
135 | ||
c88130bc | 136 | if (print_tuple(s, &ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple, |
605dcad6 | 137 | l3proto, l4proto)) |
9fb9cbb1 YK |
138 | return -ENOSPC; |
139 | ||
58401572 | 140 | if (seq_print_acct(s, ct, IP_CT_DIR_ORIGINAL)) |
9fb9cbb1 YK |
141 | return -ENOSPC; |
142 | ||
c88130bc | 143 | if (!(test_bit(IPS_SEEN_REPLY_BIT, &ct->status))) |
9fb9cbb1 YK |
144 | if (seq_printf(s, "[UNREPLIED] ")) |
145 | return -ENOSPC; | |
146 | ||
c88130bc | 147 | if (print_tuple(s, &ct->tuplehash[IP_CT_DIR_REPLY].tuple, |
605dcad6 | 148 | l3proto, l4proto)) |
9fb9cbb1 YK |
149 | return -ENOSPC; |
150 | ||
58401572 | 151 | if (seq_print_acct(s, ct, IP_CT_DIR_REPLY)) |
9fb9cbb1 YK |
152 | return -ENOSPC; |
153 | ||
c88130bc | 154 | if (test_bit(IPS_ASSURED_BIT, &ct->status)) |
9fb9cbb1 YK |
155 | if (seq_printf(s, "[ASSURED] ")) |
156 | return -ENOSPC; | |
157 | ||
158 | #if defined(CONFIG_NF_CONNTRACK_MARK) | |
c88130bc | 159 | if (seq_printf(s, "mark=%u ", ct->mark)) |
9fb9cbb1 YK |
160 | return -ENOSPC; |
161 | #endif | |
162 | ||
7c9728c3 | 163 | #ifdef CONFIG_NF_CONNTRACK_SECMARK |
c88130bc | 164 | if (seq_printf(s, "secmark=%u ", ct->secmark)) |
7c9728c3 JM |
165 | return -ENOSPC; |
166 | #endif | |
167 | ||
c88130bc | 168 | if (seq_printf(s, "use=%u\n", atomic_read(&ct->ct_general.use))) |
9fb9cbb1 | 169 | return -ENOSPC; |
a5d29264 | 170 | |
9fb9cbb1 YK |
171 | return 0; |
172 | } | |
173 | ||
56b3d975 | 174 | static const struct seq_operations ct_seq_ops = { |
9fb9cbb1 YK |
175 | .start = ct_seq_start, |
176 | .next = ct_seq_next, | |
177 | .stop = ct_seq_stop, | |
178 | .show = ct_seq_show | |
179 | }; | |
180 | ||
181 | static int ct_open(struct inode *inode, struct file *file) | |
182 | { | |
b2ce2c74 | 183 | return seq_open_net(inode, file, &ct_seq_ops, |
e2da5913 | 184 | sizeof(struct ct_iter_state)); |
9fb9cbb1 YK |
185 | } |
186 | ||
da7071d7 | 187 | static const struct file_operations ct_file_ops = { |
9fb9cbb1 YK |
188 | .owner = THIS_MODULE, |
189 | .open = ct_open, | |
190 | .read = seq_read, | |
191 | .llseek = seq_lseek, | |
b2ce2c74 | 192 | .release = seq_release_net, |
9fb9cbb1 YK |
193 | }; |
194 | ||
9fb9cbb1 YK |
195 | static void *ct_cpu_seq_start(struct seq_file *seq, loff_t *pos) |
196 | { | |
197 | int cpu; | |
198 | ||
199 | if (*pos == 0) | |
200 | return SEQ_START_TOKEN; | |
201 | ||
202 | for (cpu = *pos-1; cpu < NR_CPUS; ++cpu) { | |
203 | if (!cpu_possible(cpu)) | |
204 | continue; | |
205 | *pos = cpu + 1; | |
0d55af87 | 206 | return per_cpu_ptr(init_net.ct.stat, cpu); |
9fb9cbb1 YK |
207 | } |
208 | ||
209 | return NULL; | |
210 | } | |
211 | ||
212 | static void *ct_cpu_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
213 | { | |
214 | int cpu; | |
215 | ||
216 | for (cpu = *pos; cpu < NR_CPUS; ++cpu) { | |
217 | if (!cpu_possible(cpu)) | |
218 | continue; | |
219 | *pos = cpu + 1; | |
0d55af87 | 220 | return per_cpu_ptr(init_net.ct.stat, cpu); |
9fb9cbb1 YK |
221 | } |
222 | ||
223 | return NULL; | |
224 | } | |
225 | ||
226 | static void ct_cpu_seq_stop(struct seq_file *seq, void *v) | |
227 | { | |
228 | } | |
229 | ||
230 | static int ct_cpu_seq_show(struct seq_file *seq, void *v) | |
231 | { | |
49ac8713 | 232 | unsigned int nr_conntracks = atomic_read(&init_net.ct.count); |
32948588 | 233 | const struct ip_conntrack_stat *st = v; |
9fb9cbb1 YK |
234 | |
235 | if (v == SEQ_START_TOKEN) { | |
236 | seq_printf(seq, "entries searched found new invalid ignore delete delete_list insert insert_failed drop early_drop icmp_error expect_new expect_create expect_delete\n"); | |
237 | return 0; | |
238 | } | |
239 | ||
240 | seq_printf(seq, "%08x %08x %08x %08x %08x %08x %08x %08x " | |
241 | "%08x %08x %08x %08x %08x %08x %08x %08x \n", | |
242 | nr_conntracks, | |
243 | st->searched, | |
244 | st->found, | |
245 | st->new, | |
246 | st->invalid, | |
247 | st->ignore, | |
248 | st->delete, | |
249 | st->delete_list, | |
250 | st->insert, | |
251 | st->insert_failed, | |
252 | st->drop, | |
253 | st->early_drop, | |
254 | st->error, | |
255 | ||
256 | st->expect_new, | |
257 | st->expect_create, | |
258 | st->expect_delete | |
259 | ); | |
260 | return 0; | |
261 | } | |
262 | ||
56b3d975 | 263 | static const struct seq_operations ct_cpu_seq_ops = { |
9fb9cbb1 YK |
264 | .start = ct_cpu_seq_start, |
265 | .next = ct_cpu_seq_next, | |
266 | .stop = ct_cpu_seq_stop, | |
267 | .show = ct_cpu_seq_show, | |
268 | }; | |
269 | ||
270 | static int ct_cpu_seq_open(struct inode *inode, struct file *file) | |
271 | { | |
272 | return seq_open(file, &ct_cpu_seq_ops); | |
273 | } | |
274 | ||
da7071d7 | 275 | static const struct file_operations ct_cpu_seq_fops = { |
9fb9cbb1 YK |
276 | .owner = THIS_MODULE, |
277 | .open = ct_cpu_seq_open, | |
278 | .read = seq_read, | |
279 | .llseek = seq_lseek, | |
665bba10 | 280 | .release = seq_release, |
9fb9cbb1 | 281 | }; |
b916f7d4 | 282 | |
b2ce2c74 | 283 | static int nf_conntrack_standalone_init_proc(struct net *net) |
b916f7d4 AD |
284 | { |
285 | struct proc_dir_entry *pde; | |
286 | ||
b2ce2c74 | 287 | pde = proc_net_fops_create(net, "nf_conntrack", 0440, &ct_file_ops); |
b916f7d4 AD |
288 | if (!pde) |
289 | goto out_nf_conntrack; | |
52c0e111 | 290 | |
b2ce2c74 | 291 | pde = proc_create("nf_conntrack", S_IRUGO, net->proc_net_stat, |
52c0e111 | 292 | &ct_cpu_seq_fops); |
b916f7d4 AD |
293 | if (!pde) |
294 | goto out_stat_nf_conntrack; | |
b916f7d4 AD |
295 | return 0; |
296 | ||
297 | out_stat_nf_conntrack: | |
b2ce2c74 | 298 | proc_net_remove(net, "nf_conntrack"); |
b916f7d4 AD |
299 | out_nf_conntrack: |
300 | return -ENOMEM; | |
301 | } | |
302 | ||
b2ce2c74 | 303 | static void nf_conntrack_standalone_fini_proc(struct net *net) |
b916f7d4 | 304 | { |
b2ce2c74 AD |
305 | remove_proc_entry("nf_conntrack", net->proc_net_stat); |
306 | proc_net_remove(net, "nf_conntrack"); | |
b916f7d4 AD |
307 | } |
308 | #else | |
b2ce2c74 | 309 | static int nf_conntrack_standalone_init_proc(struct net *net) |
b916f7d4 AD |
310 | { |
311 | return 0; | |
312 | } | |
313 | ||
b2ce2c74 | 314 | static void nf_conntrack_standalone_fini_proc(struct net *net) |
b916f7d4 AD |
315 | { |
316 | } | |
9fb9cbb1 YK |
317 | #endif /* CONFIG_PROC_FS */ |
318 | ||
319 | /* Sysctl support */ | |
320 | ||
94aec08e | 321 | int nf_conntrack_checksum __read_mostly = 1; |
13b18339 | 322 | EXPORT_SYMBOL_GPL(nf_conntrack_checksum); |
72b55823 | 323 | |
9fb9cbb1 | 324 | #ifdef CONFIG_SYSCTL |
9fb9cbb1 YK |
325 | /* Log invalid packets of a given protocol */ |
326 | static int log_invalid_proto_min = 0; | |
327 | static int log_invalid_proto_max = 255; | |
328 | ||
329 | static struct ctl_table_header *nf_ct_sysctl_header; | |
9714be7d | 330 | static struct ctl_table_header *nf_ct_netfilter_header; |
9fb9cbb1 YK |
331 | |
332 | static ctl_table nf_ct_sysctl_table[] = { | |
333 | { | |
334 | .ctl_name = NET_NF_CONNTRACK_MAX, | |
335 | .procname = "nf_conntrack_max", | |
336 | .data = &nf_conntrack_max, | |
337 | .maxlen = sizeof(int), | |
338 | .mode = 0644, | |
339 | .proc_handler = &proc_dointvec, | |
340 | }, | |
341 | { | |
342 | .ctl_name = NET_NF_CONNTRACK_COUNT, | |
343 | .procname = "nf_conntrack_count", | |
49ac8713 | 344 | .data = &init_net.ct.count, |
9fb9cbb1 YK |
345 | .maxlen = sizeof(int), |
346 | .mode = 0444, | |
347 | .proc_handler = &proc_dointvec, | |
348 | }, | |
349 | { | |
350 | .ctl_name = NET_NF_CONNTRACK_BUCKETS, | |
351 | .procname = "nf_conntrack_buckets", | |
352 | .data = &nf_conntrack_htable_size, | |
353 | .maxlen = sizeof(unsigned int), | |
354 | .mode = 0444, | |
355 | .proc_handler = &proc_dointvec, | |
356 | }, | |
39a27a35 PM |
357 | { |
358 | .ctl_name = NET_NF_CONNTRACK_CHECKSUM, | |
359 | .procname = "nf_conntrack_checksum", | |
360 | .data = &nf_conntrack_checksum, | |
361 | .maxlen = sizeof(unsigned int), | |
362 | .mode = 0644, | |
363 | .proc_handler = &proc_dointvec, | |
364 | }, | |
9fb9cbb1 YK |
365 | { |
366 | .ctl_name = NET_NF_CONNTRACK_LOG_INVALID, | |
367 | .procname = "nf_conntrack_log_invalid", | |
368 | .data = &nf_ct_log_invalid, | |
369 | .maxlen = sizeof(unsigned int), | |
370 | .mode = 0644, | |
371 | .proc_handler = &proc_dointvec_minmax, | |
372 | .strategy = &sysctl_intvec, | |
373 | .extra1 = &log_invalid_proto_min, | |
374 | .extra2 = &log_invalid_proto_max, | |
375 | }, | |
f264a7df PM |
376 | { |
377 | .ctl_name = CTL_UNNUMBERED, | |
378 | .procname = "nf_conntrack_expect_max", | |
379 | .data = &nf_ct_expect_max, | |
380 | .maxlen = sizeof(int), | |
381 | .mode = 0644, | |
382 | .proc_handler = &proc_dointvec, | |
383 | }, | |
9fb9cbb1 YK |
384 | { .ctl_name = 0 } |
385 | }; | |
386 | ||
387 | #define NET_NF_CONNTRACK_MAX 2089 | |
388 | ||
389 | static ctl_table nf_ct_netfilter_table[] = { | |
9fb9cbb1 YK |
390 | { |
391 | .ctl_name = NET_NF_CONNTRACK_MAX, | |
392 | .procname = "nf_conntrack_max", | |
393 | .data = &nf_conntrack_max, | |
394 | .maxlen = sizeof(int), | |
395 | .mode = 0644, | |
396 | .proc_handler = &proc_dointvec, | |
397 | }, | |
398 | { .ctl_name = 0 } | |
399 | }; | |
400 | ||
9e232495 | 401 | static struct ctl_path nf_ct_path[] = { |
3d7cc2ba PE |
402 | { .procname = "net", .ctl_name = CTL_NET, }, |
403 | { } | |
9fb9cbb1 | 404 | }; |
3d7cc2ba | 405 | |
13b18339 | 406 | EXPORT_SYMBOL_GPL(nf_ct_log_invalid); |
b916f7d4 AD |
407 | |
408 | static int nf_conntrack_standalone_init_sysctl(void) | |
409 | { | |
9714be7d | 410 | nf_ct_netfilter_header = |
b916f7d4 | 411 | register_sysctl_paths(nf_ct_path, nf_ct_netfilter_table); |
9714be7d KPO |
412 | if (!nf_ct_netfilter_header) |
413 | goto out; | |
414 | ||
415 | nf_ct_sysctl_header = | |
416 | register_sysctl_paths(nf_net_netfilter_sysctl_path, | |
417 | nf_ct_sysctl_table); | |
418 | if (!nf_ct_sysctl_header) | |
419 | goto out_unregister_netfilter; | |
420 | ||
b916f7d4 AD |
421 | return 0; |
422 | ||
9714be7d KPO |
423 | out_unregister_netfilter: |
424 | unregister_sysctl_table(nf_ct_netfilter_header); | |
425 | out: | |
426 | printk("nf_conntrack: can't register to sysctl.\n"); | |
427 | return -ENOMEM; | |
b916f7d4 AD |
428 | } |
429 | ||
430 | static void nf_conntrack_standalone_fini_sysctl(void) | |
431 | { | |
9714be7d | 432 | unregister_sysctl_table(nf_ct_netfilter_header); |
b916f7d4 AD |
433 | unregister_sysctl_table(nf_ct_sysctl_header); |
434 | } | |
435 | #else | |
436 | static int nf_conntrack_standalone_init_sysctl(void) | |
437 | { | |
438 | return 0; | |
439 | } | |
440 | ||
441 | static void nf_conntrack_standalone_fini_sysctl(void) | |
442 | { | |
443 | } | |
9fb9cbb1 YK |
444 | #endif /* CONFIG_SYSCTL */ |
445 | ||
dfdb8d79 AD |
446 | static int nf_conntrack_net_init(struct net *net) |
447 | { | |
b2ce2c74 AD |
448 | int ret; |
449 | ||
450 | ret = nf_conntrack_init(net); | |
451 | if (ret < 0) | |
452 | goto out_init; | |
453 | ret = nf_conntrack_standalone_init_proc(net); | |
454 | if (ret < 0) | |
455 | goto out_proc; | |
456 | return 0; | |
457 | ||
458 | out_proc: | |
459 | nf_conntrack_cleanup(net); | |
460 | out_init: | |
461 | return ret; | |
dfdb8d79 AD |
462 | } |
463 | ||
464 | static void nf_conntrack_net_exit(struct net *net) | |
465 | { | |
b2ce2c74 | 466 | nf_conntrack_standalone_fini_proc(net); |
dfdb8d79 AD |
467 | nf_conntrack_cleanup(net); |
468 | } | |
469 | ||
470 | static struct pernet_operations nf_conntrack_net_ops = { | |
471 | .init = nf_conntrack_net_init, | |
472 | .exit = nf_conntrack_net_exit, | |
473 | }; | |
474 | ||
65b4b4e8 | 475 | static int __init nf_conntrack_standalone_init(void) |
9fb9cbb1 | 476 | { |
b916f7d4 | 477 | int ret; |
32292a7f | 478 | |
dfdb8d79 | 479 | ret = register_pernet_subsys(&nf_conntrack_net_ops); |
32292a7f | 480 | if (ret < 0) |
b916f7d4 | 481 | goto out; |
b916f7d4 AD |
482 | ret = nf_conntrack_standalone_init_sysctl(); |
483 | if (ret < 0) | |
484 | goto out_sysctl; | |
485 | return 0; | |
32292a7f | 486 | |
b916f7d4 | 487 | out_sysctl: |
dfdb8d79 | 488 | unregister_pernet_subsys(&nf_conntrack_net_ops); |
b916f7d4 | 489 | out: |
32292a7f | 490 | return ret; |
9fb9cbb1 YK |
491 | } |
492 | ||
65b4b4e8 | 493 | static void __exit nf_conntrack_standalone_fini(void) |
9fb9cbb1 | 494 | { |
b916f7d4 | 495 | nf_conntrack_standalone_fini_sysctl(); |
dfdb8d79 | 496 | unregister_pernet_subsys(&nf_conntrack_net_ops); |
9fb9cbb1 YK |
497 | } |
498 | ||
65b4b4e8 AM |
499 | module_init(nf_conntrack_standalone_init); |
500 | module_exit(nf_conntrack_standalone_fini); | |
9fb9cbb1 YK |
501 | |
502 | /* Some modules need us, but don't depend directly on any symbol. | |
503 | They should call this. */ | |
2e4e6a17 | 504 | void need_conntrack(void) |
9fb9cbb1 YK |
505 | { |
506 | } | |
13b18339 | 507 | EXPORT_SYMBOL_GPL(need_conntrack); |