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Commit | Line | Data |
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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> | |
5a0e3ad6 | 11 | #include <linux/slab.h> |
9fb9cbb1 YK |
12 | #include <linux/module.h> |
13 | #include <linux/skbuff.h> | |
14 | #include <linux/proc_fs.h> | |
15 | #include <linux/seq_file.h> | |
16 | #include <linux/percpu.h> | |
17 | #include <linux/netdevice.h> | |
457c4cbc | 18 | #include <net/net_namespace.h> |
9fb9cbb1 YK |
19 | #ifdef CONFIG_SYSCTL |
20 | #include <linux/sysctl.h> | |
21 | #endif | |
22 | ||
9fb9cbb1 | 23 | #include <net/netfilter/nf_conntrack.h> |
f6180121 | 24 | #include <net/netfilter/nf_conntrack_core.h> |
9fb9cbb1 | 25 | #include <net/netfilter/nf_conntrack_l3proto.h> |
605dcad6 | 26 | #include <net/netfilter/nf_conntrack_l4proto.h> |
77ab9cff | 27 | #include <net/netfilter/nf_conntrack_expect.h> |
9fb9cbb1 | 28 | #include <net/netfilter/nf_conntrack_helper.h> |
58401572 | 29 | #include <net/netfilter/nf_conntrack_acct.h> |
5d0aa2cc | 30 | #include <net/netfilter/nf_conntrack_zones.h> |
9fb9cbb1 | 31 | |
9fb9cbb1 YK |
32 | MODULE_LICENSE("GPL"); |
33 | ||
9fb9cbb1 | 34 | #ifdef CONFIG_PROC_FS |
77ab9cff | 35 | int |
9fb9cbb1 | 36 | print_tuple(struct seq_file *s, const struct nf_conntrack_tuple *tuple, |
32948588 JE |
37 | const struct nf_conntrack_l3proto *l3proto, |
38 | const struct nf_conntrack_l4proto *l4proto) | |
9fb9cbb1 | 39 | { |
605dcad6 | 40 | return l3proto->print_tuple(s, tuple) || l4proto->print_tuple(s, tuple); |
9fb9cbb1 | 41 | } |
e4bd8bce | 42 | EXPORT_SYMBOL_GPL(print_tuple); |
9fb9cbb1 | 43 | |
9fb9cbb1 | 44 | struct ct_iter_state { |
b2ce2c74 | 45 | struct seq_net_private p; |
9fb9cbb1 YK |
46 | unsigned int bucket; |
47 | }; | |
48 | ||
ea781f19 | 49 | static struct hlist_nulls_node *ct_get_first(struct seq_file *seq) |
9fb9cbb1 | 50 | { |
b2ce2c74 | 51 | struct net *net = seq_file_net(seq); |
9fb9cbb1 | 52 | struct ct_iter_state *st = seq->private; |
ea781f19 | 53 | struct hlist_nulls_node *n; |
9fb9cbb1 YK |
54 | |
55 | for (st->bucket = 0; | |
d696c7bd | 56 | st->bucket < net->ct.htable_size; |
9fb9cbb1 | 57 | st->bucket++) { |
b2ce2c74 | 58 | n = rcu_dereference(net->ct.hash[st->bucket].first); |
ea781f19 | 59 | if (!is_a_nulls(n)) |
76507f69 | 60 | return n; |
9fb9cbb1 YK |
61 | } |
62 | return NULL; | |
63 | } | |
64 | ||
ea781f19 ED |
65 | static struct hlist_nulls_node *ct_get_next(struct seq_file *seq, |
66 | struct hlist_nulls_node *head) | |
9fb9cbb1 | 67 | { |
b2ce2c74 | 68 | struct net *net = seq_file_net(seq); |
9fb9cbb1 YK |
69 | struct ct_iter_state *st = seq->private; |
70 | ||
76507f69 | 71 | head = rcu_dereference(head->next); |
ea781f19 ED |
72 | while (is_a_nulls(head)) { |
73 | if (likely(get_nulls_value(head) == st->bucket)) { | |
d696c7bd | 74 | if (++st->bucket >= net->ct.htable_size) |
ea781f19 ED |
75 | return NULL; |
76 | } | |
b2ce2c74 | 77 | head = rcu_dereference(net->ct.hash[st->bucket].first); |
9fb9cbb1 YK |
78 | } |
79 | return head; | |
80 | } | |
81 | ||
ea781f19 | 82 | static struct hlist_nulls_node *ct_get_idx(struct seq_file *seq, loff_t pos) |
9fb9cbb1 | 83 | { |
ea781f19 | 84 | struct hlist_nulls_node *head = ct_get_first(seq); |
9fb9cbb1 YK |
85 | |
86 | if (head) | |
87 | while (pos && (head = ct_get_next(seq, head))) | |
88 | pos--; | |
89 | return pos ? NULL : head; | |
90 | } | |
91 | ||
92 | static void *ct_seq_start(struct seq_file *seq, loff_t *pos) | |
76507f69 | 93 | __acquires(RCU) |
9fb9cbb1 | 94 | { |
76507f69 | 95 | rcu_read_lock(); |
9fb9cbb1 YK |
96 | return ct_get_idx(seq, *pos); |
97 | } | |
98 | ||
99 | static void *ct_seq_next(struct seq_file *s, void *v, loff_t *pos) | |
100 | { | |
101 | (*pos)++; | |
102 | return ct_get_next(s, v); | |
103 | } | |
104 | ||
105 | static void ct_seq_stop(struct seq_file *s, void *v) | |
76507f69 | 106 | __releases(RCU) |
9fb9cbb1 | 107 | { |
76507f69 | 108 | rcu_read_unlock(); |
9fb9cbb1 YK |
109 | } |
110 | ||
111 | /* return 0 on success, 1 in case of error */ | |
112 | static int ct_seq_show(struct seq_file *s, void *v) | |
113 | { | |
ea781f19 ED |
114 | struct nf_conntrack_tuple_hash *hash = v; |
115 | struct nf_conn *ct = nf_ct_tuplehash_to_ctrack(hash); | |
32948588 JE |
116 | const struct nf_conntrack_l3proto *l3proto; |
117 | const struct nf_conntrack_l4proto *l4proto; | |
ea781f19 | 118 | int ret = 0; |
9fb9cbb1 | 119 | |
c88130bc | 120 | NF_CT_ASSERT(ct); |
ea781f19 ED |
121 | if (unlikely(!atomic_inc_not_zero(&ct->ct_general.use))) |
122 | return 0; | |
9fb9cbb1 YK |
123 | |
124 | /* we only want to print DIR_ORIGINAL */ | |
125 | if (NF_CT_DIRECTION(hash)) | |
ea781f19 | 126 | goto release; |
9fb9cbb1 | 127 | |
5e8fbe2a | 128 | l3proto = __nf_ct_l3proto_find(nf_ct_l3num(ct)); |
9fb9cbb1 | 129 | NF_CT_ASSERT(l3proto); |
5e8fbe2a | 130 | l4proto = __nf_ct_l4proto_find(nf_ct_l3num(ct), nf_ct_protonum(ct)); |
605dcad6 | 131 | NF_CT_ASSERT(l4proto); |
9fb9cbb1 | 132 | |
ea781f19 | 133 | ret = -ENOSPC; |
9fb9cbb1 | 134 | if (seq_printf(s, "%-8s %u %-8s %u %ld ", |
5e8fbe2a PM |
135 | l3proto->name, nf_ct_l3num(ct), |
136 | l4proto->name, nf_ct_protonum(ct), | |
c88130bc PM |
137 | timer_pending(&ct->timeout) |
138 | ? (long)(ct->timeout.expires - jiffies)/HZ : 0) != 0) | |
ea781f19 | 139 | goto release; |
9fb9cbb1 | 140 | |
c88130bc | 141 | if (l4proto->print_conntrack && l4proto->print_conntrack(s, ct)) |
ea781f19 | 142 | goto release; |
9fb9cbb1 | 143 | |
c88130bc | 144 | if (print_tuple(s, &ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple, |
605dcad6 | 145 | l3proto, l4proto)) |
ea781f19 | 146 | goto release; |
9fb9cbb1 | 147 | |
58401572 | 148 | if (seq_print_acct(s, ct, IP_CT_DIR_ORIGINAL)) |
ea781f19 | 149 | goto release; |
9fb9cbb1 | 150 | |
c88130bc | 151 | if (!(test_bit(IPS_SEEN_REPLY_BIT, &ct->status))) |
9fb9cbb1 | 152 | if (seq_printf(s, "[UNREPLIED] ")) |
ea781f19 | 153 | goto release; |
9fb9cbb1 | 154 | |
c88130bc | 155 | if (print_tuple(s, &ct->tuplehash[IP_CT_DIR_REPLY].tuple, |
605dcad6 | 156 | l3proto, l4proto)) |
ea781f19 | 157 | goto release; |
9fb9cbb1 | 158 | |
58401572 | 159 | if (seq_print_acct(s, ct, IP_CT_DIR_REPLY)) |
ea781f19 | 160 | goto release; |
9fb9cbb1 | 161 | |
c88130bc | 162 | if (test_bit(IPS_ASSURED_BIT, &ct->status)) |
9fb9cbb1 | 163 | if (seq_printf(s, "[ASSURED] ")) |
ea781f19 | 164 | goto release; |
9fb9cbb1 YK |
165 | |
166 | #if defined(CONFIG_NF_CONNTRACK_MARK) | |
c88130bc | 167 | if (seq_printf(s, "mark=%u ", ct->mark)) |
ea781f19 | 168 | goto release; |
9fb9cbb1 YK |
169 | #endif |
170 | ||
7c9728c3 | 171 | #ifdef CONFIG_NF_CONNTRACK_SECMARK |
c88130bc | 172 | if (seq_printf(s, "secmark=%u ", ct->secmark)) |
ea781f19 | 173 | goto release; |
7c9728c3 JM |
174 | #endif |
175 | ||
5d0aa2cc PM |
176 | #ifdef CONFIG_NF_CONNTRACK_ZONES |
177 | if (seq_printf(s, "zone=%u ", nf_ct_zone(ct))) | |
178 | goto release; | |
179 | #endif | |
180 | ||
c88130bc | 181 | if (seq_printf(s, "use=%u\n", atomic_read(&ct->ct_general.use))) |
ea781f19 | 182 | goto release; |
a5d29264 | 183 | |
ea781f19 ED |
184 | ret = 0; |
185 | release: | |
186 | nf_ct_put(ct); | |
9fb9cbb1 YK |
187 | return 0; |
188 | } | |
189 | ||
56b3d975 | 190 | static const struct seq_operations ct_seq_ops = { |
9fb9cbb1 YK |
191 | .start = ct_seq_start, |
192 | .next = ct_seq_next, | |
193 | .stop = ct_seq_stop, | |
194 | .show = ct_seq_show | |
195 | }; | |
196 | ||
197 | static int ct_open(struct inode *inode, struct file *file) | |
198 | { | |
b2ce2c74 | 199 | return seq_open_net(inode, file, &ct_seq_ops, |
e2da5913 | 200 | sizeof(struct ct_iter_state)); |
9fb9cbb1 YK |
201 | } |
202 | ||
da7071d7 | 203 | static const struct file_operations ct_file_ops = { |
9fb9cbb1 YK |
204 | .owner = THIS_MODULE, |
205 | .open = ct_open, | |
206 | .read = seq_read, | |
207 | .llseek = seq_lseek, | |
b2ce2c74 | 208 | .release = seq_release_net, |
9fb9cbb1 YK |
209 | }; |
210 | ||
9fb9cbb1 YK |
211 | static void *ct_cpu_seq_start(struct seq_file *seq, loff_t *pos) |
212 | { | |
8e9df801 | 213 | struct net *net = seq_file_net(seq); |
9fb9cbb1 YK |
214 | int cpu; |
215 | ||
216 | if (*pos == 0) | |
217 | return SEQ_START_TOKEN; | |
218 | ||
0f23174a | 219 | for (cpu = *pos-1; cpu < nr_cpu_ids; ++cpu) { |
9fb9cbb1 YK |
220 | if (!cpu_possible(cpu)) |
221 | continue; | |
222 | *pos = cpu + 1; | |
8e9df801 | 223 | return per_cpu_ptr(net->ct.stat, cpu); |
9fb9cbb1 YK |
224 | } |
225 | ||
226 | return NULL; | |
227 | } | |
228 | ||
229 | static void *ct_cpu_seq_next(struct seq_file *seq, void *v, loff_t *pos) | |
230 | { | |
8e9df801 | 231 | struct net *net = seq_file_net(seq); |
9fb9cbb1 YK |
232 | int cpu; |
233 | ||
0f23174a | 234 | for (cpu = *pos; cpu < nr_cpu_ids; ++cpu) { |
9fb9cbb1 YK |
235 | if (!cpu_possible(cpu)) |
236 | continue; | |
237 | *pos = cpu + 1; | |
8e9df801 | 238 | return per_cpu_ptr(net->ct.stat, cpu); |
9fb9cbb1 YK |
239 | } |
240 | ||
241 | return NULL; | |
242 | } | |
243 | ||
244 | static void ct_cpu_seq_stop(struct seq_file *seq, void *v) | |
245 | { | |
246 | } | |
247 | ||
248 | static int ct_cpu_seq_show(struct seq_file *seq, void *v) | |
249 | { | |
8e9df801 AD |
250 | struct net *net = seq_file_net(seq); |
251 | unsigned int nr_conntracks = atomic_read(&net->ct.count); | |
32948588 | 252 | const struct ip_conntrack_stat *st = v; |
9fb9cbb1 YK |
253 | |
254 | if (v == SEQ_START_TOKEN) { | |
255 | 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"); | |
256 | return 0; | |
257 | } | |
258 | ||
259 | seq_printf(seq, "%08x %08x %08x %08x %08x %08x %08x %08x " | |
260 | "%08x %08x %08x %08x %08x %08x %08x %08x \n", | |
261 | nr_conntracks, | |
262 | st->searched, | |
263 | st->found, | |
264 | st->new, | |
265 | st->invalid, | |
266 | st->ignore, | |
267 | st->delete, | |
268 | st->delete_list, | |
269 | st->insert, | |
270 | st->insert_failed, | |
271 | st->drop, | |
272 | st->early_drop, | |
273 | st->error, | |
274 | ||
275 | st->expect_new, | |
276 | st->expect_create, | |
277 | st->expect_delete | |
278 | ); | |
279 | return 0; | |
280 | } | |
281 | ||
56b3d975 | 282 | static const struct seq_operations ct_cpu_seq_ops = { |
9fb9cbb1 YK |
283 | .start = ct_cpu_seq_start, |
284 | .next = ct_cpu_seq_next, | |
285 | .stop = ct_cpu_seq_stop, | |
286 | .show = ct_cpu_seq_show, | |
287 | }; | |
288 | ||
289 | static int ct_cpu_seq_open(struct inode *inode, struct file *file) | |
290 | { | |
8e9df801 AD |
291 | return seq_open_net(inode, file, &ct_cpu_seq_ops, |
292 | sizeof(struct seq_net_private)); | |
9fb9cbb1 YK |
293 | } |
294 | ||
da7071d7 | 295 | static const struct file_operations ct_cpu_seq_fops = { |
9fb9cbb1 YK |
296 | .owner = THIS_MODULE, |
297 | .open = ct_cpu_seq_open, | |
298 | .read = seq_read, | |
299 | .llseek = seq_lseek, | |
8e9df801 | 300 | .release = seq_release_net, |
9fb9cbb1 | 301 | }; |
b916f7d4 | 302 | |
b2ce2c74 | 303 | static int nf_conntrack_standalone_init_proc(struct net *net) |
b916f7d4 AD |
304 | { |
305 | struct proc_dir_entry *pde; | |
306 | ||
b2ce2c74 | 307 | pde = proc_net_fops_create(net, "nf_conntrack", 0440, &ct_file_ops); |
b916f7d4 AD |
308 | if (!pde) |
309 | goto out_nf_conntrack; | |
52c0e111 | 310 | |
b2ce2c74 | 311 | pde = proc_create("nf_conntrack", S_IRUGO, net->proc_net_stat, |
52c0e111 | 312 | &ct_cpu_seq_fops); |
b916f7d4 AD |
313 | if (!pde) |
314 | goto out_stat_nf_conntrack; | |
b916f7d4 AD |
315 | return 0; |
316 | ||
317 | out_stat_nf_conntrack: | |
b2ce2c74 | 318 | proc_net_remove(net, "nf_conntrack"); |
b916f7d4 AD |
319 | out_nf_conntrack: |
320 | return -ENOMEM; | |
321 | } | |
322 | ||
b2ce2c74 | 323 | static void nf_conntrack_standalone_fini_proc(struct net *net) |
b916f7d4 | 324 | { |
b2ce2c74 AD |
325 | remove_proc_entry("nf_conntrack", net->proc_net_stat); |
326 | proc_net_remove(net, "nf_conntrack"); | |
b916f7d4 AD |
327 | } |
328 | #else | |
b2ce2c74 | 329 | static int nf_conntrack_standalone_init_proc(struct net *net) |
b916f7d4 AD |
330 | { |
331 | return 0; | |
332 | } | |
333 | ||
b2ce2c74 | 334 | static void nf_conntrack_standalone_fini_proc(struct net *net) |
b916f7d4 AD |
335 | { |
336 | } | |
9fb9cbb1 YK |
337 | #endif /* CONFIG_PROC_FS */ |
338 | ||
339 | /* Sysctl support */ | |
340 | ||
341 | #ifdef CONFIG_SYSCTL | |
9fb9cbb1 YK |
342 | /* Log invalid packets of a given protocol */ |
343 | static int log_invalid_proto_min = 0; | |
344 | static int log_invalid_proto_max = 255; | |
345 | ||
9714be7d | 346 | static struct ctl_table_header *nf_ct_netfilter_header; |
9fb9cbb1 YK |
347 | |
348 | static ctl_table nf_ct_sysctl_table[] = { | |
349 | { | |
9fb9cbb1 YK |
350 | .procname = "nf_conntrack_max", |
351 | .data = &nf_conntrack_max, | |
352 | .maxlen = sizeof(int), | |
353 | .mode = 0644, | |
6d9f239a | 354 | .proc_handler = proc_dointvec, |
9fb9cbb1 YK |
355 | }, |
356 | { | |
9fb9cbb1 | 357 | .procname = "nf_conntrack_count", |
49ac8713 | 358 | .data = &init_net.ct.count, |
9fb9cbb1 YK |
359 | .maxlen = sizeof(int), |
360 | .mode = 0444, | |
6d9f239a | 361 | .proc_handler = proc_dointvec, |
9fb9cbb1 YK |
362 | }, |
363 | { | |
9fb9cbb1 | 364 | .procname = "nf_conntrack_buckets", |
d696c7bd | 365 | .data = &init_net.ct.htable_size, |
9fb9cbb1 YK |
366 | .maxlen = sizeof(unsigned int), |
367 | .mode = 0444, | |
6d9f239a | 368 | .proc_handler = proc_dointvec, |
9fb9cbb1 | 369 | }, |
39a27a35 | 370 | { |
39a27a35 | 371 | .procname = "nf_conntrack_checksum", |
c04d0552 | 372 | .data = &init_net.ct.sysctl_checksum, |
39a27a35 PM |
373 | .maxlen = sizeof(unsigned int), |
374 | .mode = 0644, | |
6d9f239a | 375 | .proc_handler = proc_dointvec, |
39a27a35 | 376 | }, |
9fb9cbb1 | 377 | { |
9fb9cbb1 | 378 | .procname = "nf_conntrack_log_invalid", |
c2a2c7e0 | 379 | .data = &init_net.ct.sysctl_log_invalid, |
9fb9cbb1 YK |
380 | .maxlen = sizeof(unsigned int), |
381 | .mode = 0644, | |
6d9f239a | 382 | .proc_handler = proc_dointvec_minmax, |
9fb9cbb1 YK |
383 | .extra1 = &log_invalid_proto_min, |
384 | .extra2 = &log_invalid_proto_max, | |
385 | }, | |
f264a7df | 386 | { |
f264a7df PM |
387 | .procname = "nf_conntrack_expect_max", |
388 | .data = &nf_ct_expect_max, | |
389 | .maxlen = sizeof(int), | |
390 | .mode = 0644, | |
6d9f239a | 391 | .proc_handler = proc_dointvec, |
f264a7df | 392 | }, |
f8572d8f | 393 | { } |
9fb9cbb1 YK |
394 | }; |
395 | ||
396 | #define NET_NF_CONNTRACK_MAX 2089 | |
397 | ||
398 | static ctl_table nf_ct_netfilter_table[] = { | |
9fb9cbb1 | 399 | { |
9fb9cbb1 YK |
400 | .procname = "nf_conntrack_max", |
401 | .data = &nf_conntrack_max, | |
402 | .maxlen = sizeof(int), | |
403 | .mode = 0644, | |
6d9f239a | 404 | .proc_handler = proc_dointvec, |
9fb9cbb1 | 405 | }, |
f8572d8f | 406 | { } |
9fb9cbb1 YK |
407 | }; |
408 | ||
9e232495 | 409 | static struct ctl_path nf_ct_path[] = { |
f8572d8f | 410 | { .procname = "net", }, |
3d7cc2ba | 411 | { } |
9fb9cbb1 | 412 | }; |
3d7cc2ba | 413 | |
80250707 | 414 | static int nf_conntrack_standalone_init_sysctl(struct net *net) |
b916f7d4 | 415 | { |
80250707 AD |
416 | struct ctl_table *table; |
417 | ||
418 | if (net_eq(net, &init_net)) { | |
419 | nf_ct_netfilter_header = | |
420 | register_sysctl_paths(nf_ct_path, nf_ct_netfilter_table); | |
421 | if (!nf_ct_netfilter_header) | |
422 | goto out; | |
423 | } | |
424 | ||
425 | table = kmemdup(nf_ct_sysctl_table, sizeof(nf_ct_sysctl_table), | |
426 | GFP_KERNEL); | |
427 | if (!table) | |
428 | goto out_kmemdup; | |
429 | ||
430 | table[1].data = &net->ct.count; | |
d696c7bd | 431 | table[2].data = &net->ct.htable_size; |
c04d0552 | 432 | table[3].data = &net->ct.sysctl_checksum; |
c2a2c7e0 | 433 | table[4].data = &net->ct.sysctl_log_invalid; |
80250707 AD |
434 | |
435 | net->ct.sysctl_header = register_net_sysctl_table(net, | |
436 | nf_net_netfilter_sysctl_path, table); | |
437 | if (!net->ct.sysctl_header) | |
9714be7d KPO |
438 | goto out_unregister_netfilter; |
439 | ||
b916f7d4 AD |
440 | return 0; |
441 | ||
9714be7d | 442 | out_unregister_netfilter: |
80250707 AD |
443 | kfree(table); |
444 | out_kmemdup: | |
445 | if (net_eq(net, &init_net)) | |
446 | unregister_sysctl_table(nf_ct_netfilter_header); | |
9714be7d KPO |
447 | out: |
448 | printk("nf_conntrack: can't register to sysctl.\n"); | |
449 | return -ENOMEM; | |
b916f7d4 AD |
450 | } |
451 | ||
80250707 | 452 | static void nf_conntrack_standalone_fini_sysctl(struct net *net) |
b916f7d4 | 453 | { |
80250707 AD |
454 | struct ctl_table *table; |
455 | ||
456 | if (net_eq(net, &init_net)) | |
457 | unregister_sysctl_table(nf_ct_netfilter_header); | |
458 | table = net->ct.sysctl_header->ctl_table_arg; | |
459 | unregister_net_sysctl_table(net->ct.sysctl_header); | |
460 | kfree(table); | |
b916f7d4 AD |
461 | } |
462 | #else | |
80250707 | 463 | static int nf_conntrack_standalone_init_sysctl(struct net *net) |
b916f7d4 AD |
464 | { |
465 | return 0; | |
466 | } | |
467 | ||
80250707 | 468 | static void nf_conntrack_standalone_fini_sysctl(struct net *net) |
b916f7d4 AD |
469 | { |
470 | } | |
9fb9cbb1 YK |
471 | #endif /* CONFIG_SYSCTL */ |
472 | ||
dfdb8d79 AD |
473 | static int nf_conntrack_net_init(struct net *net) |
474 | { | |
b2ce2c74 AD |
475 | int ret; |
476 | ||
477 | ret = nf_conntrack_init(net); | |
478 | if (ret < 0) | |
479 | goto out_init; | |
480 | ret = nf_conntrack_standalone_init_proc(net); | |
481 | if (ret < 0) | |
482 | goto out_proc; | |
c04d0552 | 483 | net->ct.sysctl_checksum = 1; |
c2a2c7e0 | 484 | net->ct.sysctl_log_invalid = 0; |
80250707 AD |
485 | ret = nf_conntrack_standalone_init_sysctl(net); |
486 | if (ret < 0) | |
487 | goto out_sysctl; | |
b2ce2c74 AD |
488 | return 0; |
489 | ||
80250707 AD |
490 | out_sysctl: |
491 | nf_conntrack_standalone_fini_proc(net); | |
b2ce2c74 AD |
492 | out_proc: |
493 | nf_conntrack_cleanup(net); | |
494 | out_init: | |
495 | return ret; | |
dfdb8d79 AD |
496 | } |
497 | ||
498 | static void nf_conntrack_net_exit(struct net *net) | |
499 | { | |
80250707 | 500 | nf_conntrack_standalone_fini_sysctl(net); |
b2ce2c74 | 501 | nf_conntrack_standalone_fini_proc(net); |
dfdb8d79 AD |
502 | nf_conntrack_cleanup(net); |
503 | } | |
504 | ||
505 | static struct pernet_operations nf_conntrack_net_ops = { | |
506 | .init = nf_conntrack_net_init, | |
507 | .exit = nf_conntrack_net_exit, | |
508 | }; | |
509 | ||
65b4b4e8 | 510 | static int __init nf_conntrack_standalone_init(void) |
9fb9cbb1 | 511 | { |
80250707 | 512 | return register_pernet_subsys(&nf_conntrack_net_ops); |
9fb9cbb1 YK |
513 | } |
514 | ||
65b4b4e8 | 515 | static void __exit nf_conntrack_standalone_fini(void) |
9fb9cbb1 | 516 | { |
dfdb8d79 | 517 | unregister_pernet_subsys(&nf_conntrack_net_ops); |
9fb9cbb1 YK |
518 | } |
519 | ||
65b4b4e8 AM |
520 | module_init(nf_conntrack_standalone_init); |
521 | module_exit(nf_conntrack_standalone_fini); | |
9fb9cbb1 YK |
522 | |
523 | /* Some modules need us, but don't depend directly on any symbol. | |
524 | They should call this. */ | |
2e4e6a17 | 525 | void need_conntrack(void) |
9fb9cbb1 YK |
526 | { |
527 | } | |
13b18339 | 528 | EXPORT_SYMBOL_GPL(need_conntrack); |