Commit | Line | Data |
---|---|---|
9fb9cbb1 YK |
1 | /* |
2 | * Copyright (C)2004 USAGI/WIDE Project | |
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. | |
7 | * | |
8 | * Author: | |
9 | * Yasuyuki Kozakai @USAGI <yasuyuki.kozakai@toshiba.co.jp> | |
9fb9cbb1 YK |
10 | */ |
11 | ||
9fb9cbb1 YK |
12 | #include <linux/types.h> |
13 | #include <linux/ipv6.h> | |
14 | #include <linux/in6.h> | |
15 | #include <linux/netfilter.h> | |
16 | #include <linux/module.h> | |
17 | #include <linux/skbuff.h> | |
18 | #include <linux/icmp.h> | |
19 | #include <linux/sysctl.h> | |
20 | #include <net/ipv6.h> | |
04128f23 | 21 | #include <net/inet_frag.h> |
9fb9cbb1 YK |
22 | |
23 | #include <linux/netfilter_ipv6.h> | |
24 | #include <net/netfilter/nf_conntrack.h> | |
25 | #include <net/netfilter/nf_conntrack_helper.h> | |
605dcad6 | 26 | #include <net/netfilter/nf_conntrack_l4proto.h> |
9fb9cbb1 YK |
27 | #include <net/netfilter/nf_conntrack_l3proto.h> |
28 | #include <net/netfilter/nf_conntrack_core.h> | |
9d2493f8 | 29 | #include <net/netfilter/ipv6/nf_conntrack_ipv6.h> |
74f7a655 | 30 | #include <net/netfilter/nf_log.h> |
9fb9cbb1 | 31 | |
8ce8439a JE |
32 | static bool ipv6_pkt_to_tuple(const struct sk_buff *skb, unsigned int nhoff, |
33 | struct nf_conntrack_tuple *tuple) | |
9fb9cbb1 | 34 | { |
32948588 JE |
35 | const u_int32_t *ap; |
36 | u_int32_t _addrs[8]; | |
9fb9cbb1 YK |
37 | |
38 | ap = skb_header_pointer(skb, nhoff + offsetof(struct ipv6hdr, saddr), | |
39 | sizeof(_addrs), _addrs); | |
40 | if (ap == NULL) | |
8ce8439a | 41 | return false; |
9fb9cbb1 YK |
42 | |
43 | memcpy(tuple->src.u3.ip6, ap, sizeof(tuple->src.u3.ip6)); | |
44 | memcpy(tuple->dst.u3.ip6, ap + 4, sizeof(tuple->dst.u3.ip6)); | |
45 | ||
8ce8439a | 46 | return true; |
9fb9cbb1 YK |
47 | } |
48 | ||
8ce8439a JE |
49 | static bool ipv6_invert_tuple(struct nf_conntrack_tuple *tuple, |
50 | const struct nf_conntrack_tuple *orig) | |
9fb9cbb1 YK |
51 | { |
52 | memcpy(tuple->src.u3.ip6, orig->dst.u3.ip6, sizeof(tuple->src.u3.ip6)); | |
53 | memcpy(tuple->dst.u3.ip6, orig->src.u3.ip6, sizeof(tuple->dst.u3.ip6)); | |
54 | ||
8ce8439a | 55 | return true; |
9fb9cbb1 YK |
56 | } |
57 | ||
58 | static int ipv6_print_tuple(struct seq_file *s, | |
59 | const struct nf_conntrack_tuple *tuple) | |
60 | { | |
5b095d98 | 61 | return seq_printf(s, "src=%pI6 dst=%pI6 ", |
0c6ce78a | 62 | tuple->src.u3.ip6, tuple->dst.u3.ip6); |
9fb9cbb1 YK |
63 | } |
64 | ||
9fb9cbb1 YK |
65 | /* |
66 | * Based on ipv6_skip_exthdr() in net/ipv6/exthdr.c | |
67 | * | |
68 | * This function parses (probably truncated) exthdr set "hdr" | |
69 | * of length "len". "nexthdrp" initially points to some place, | |
70 | * where type of the first header can be found. | |
71 | * | |
72 | * It skips all well-known exthdrs, and returns pointer to the start | |
73 | * of unparsable area i.e. the first header with unknown type. | |
74 | * if success, *nexthdr is updated by type/protocol of this header. | |
75 | * | |
76 | * NOTES: - it may return pointer pointing beyond end of packet, | |
77 | * if the last recognized header is truncated in the middle. | |
78 | * - if packet is truncated, so that all parsed headers are skipped, | |
79 | * it returns -1. | |
80 | * - if packet is fragmented, return pointer of the fragment header. | |
81 | * - ESP is unparsable for now and considered like | |
82 | * normal payload protocol. | |
83 | * - Note also special handling of AUTH header. Thanks to IPsec wizards. | |
84 | */ | |
85 | ||
1a3a206f AB |
86 | static int nf_ct_ipv6_skip_exthdr(const struct sk_buff *skb, int start, |
87 | u8 *nexthdrp, int len) | |
9fb9cbb1 YK |
88 | { |
89 | u8 nexthdr = *nexthdrp; | |
90 | ||
91 | while (ipv6_ext_hdr(nexthdr)) { | |
92 | struct ipv6_opt_hdr hdr; | |
93 | int hdrlen; | |
94 | ||
95 | if (len < (int)sizeof(struct ipv6_opt_hdr)) | |
96 | return -1; | |
97 | if (nexthdr == NEXTHDR_NONE) | |
98 | break; | |
99 | if (nexthdr == NEXTHDR_FRAGMENT) | |
100 | break; | |
101 | if (skb_copy_bits(skb, start, &hdr, sizeof(hdr))) | |
102 | BUG(); | |
103 | if (nexthdr == NEXTHDR_AUTH) | |
104 | hdrlen = (hdr.hdrlen+2)<<2; | |
105 | else | |
106 | hdrlen = ipv6_optlen(&hdr); | |
107 | ||
108 | nexthdr = hdr.nexthdr; | |
109 | len -= hdrlen; | |
110 | start += hdrlen; | |
111 | } | |
112 | ||
113 | *nexthdrp = nexthdr; | |
114 | return start; | |
115 | } | |
116 | ||
ffc30690 YK |
117 | static int ipv6_get_l4proto(const struct sk_buff *skb, unsigned int nhoff, |
118 | unsigned int *dataoff, u_int8_t *protonum) | |
9fb9cbb1 | 119 | { |
ffc30690 YK |
120 | unsigned int extoff = nhoff + sizeof(struct ipv6hdr); |
121 | unsigned char pnum; | |
122 | int protoff; | |
123 | ||
124 | if (skb_copy_bits(skb, nhoff + offsetof(struct ipv6hdr, nexthdr), | |
125 | &pnum, sizeof(pnum)) != 0) { | |
126 | pr_debug("ip6_conntrack_core: can't get nexthdr\n"); | |
127 | return -NF_ACCEPT; | |
128 | } | |
129 | protoff = nf_ct_ipv6_skip_exthdr(skb, extoff, &pnum, skb->len - extoff); | |
9fb9cbb1 | 130 | /* |
ffc30690 | 131 | * (protoff == skb->len) mean that the packet doesn't have no data |
9fb9cbb1 YK |
132 | * except of IPv6 & ext headers. but it's tracked anyway. - YK |
133 | */ | |
ffc30690 | 134 | if ((protoff < 0) || (protoff > skb->len)) { |
0d53778e | 135 | pr_debug("ip6_conntrack_core: can't find proto in pkt\n"); |
9fb9cbb1 YK |
136 | return -NF_ACCEPT; |
137 | } | |
138 | ||
139 | *dataoff = protoff; | |
140 | *protonum = pnum; | |
141 | return NF_ACCEPT; | |
142 | } | |
143 | ||
9fb9cbb1 | 144 | static unsigned int ipv6_confirm(unsigned int hooknum, |
3db05fea | 145 | struct sk_buff *skb, |
9fb9cbb1 YK |
146 | const struct net_device *in, |
147 | const struct net_device *out, | |
148 | int (*okfn)(struct sk_buff *)) | |
149 | { | |
150 | struct nf_conn *ct; | |
32948588 JE |
151 | const struct nf_conn_help *help; |
152 | const struct nf_conntrack_helper *helper; | |
9fb9cbb1 | 153 | enum ip_conntrack_info ctinfo; |
dc808fe2 | 154 | unsigned int ret, protoff; |
3db05fea HX |
155 | unsigned int extoff = (u8 *)(ipv6_hdr(skb) + 1) - skb->data; |
156 | unsigned char pnum = ipv6_hdr(skb)->nexthdr; | |
dc808fe2 | 157 | |
9fb9cbb1 YK |
158 | |
159 | /* This is where we call the helper: as the packet goes out. */ | |
3db05fea | 160 | ct = nf_ct_get(skb, &ctinfo); |
6442f1cf | 161 | if (!ct || ctinfo == IP_CT_RELATED + IP_CT_IS_REPLY) |
dc808fe2 HW |
162 | goto out; |
163 | ||
164 | help = nfct_help(ct); | |
3c158f7f PM |
165 | if (!help) |
166 | goto out; | |
167 | /* rcu_read_lock()ed by nf_hook_slow */ | |
168 | helper = rcu_dereference(help->helper); | |
169 | if (!helper) | |
dc808fe2 HW |
170 | goto out; |
171 | ||
3db05fea HX |
172 | protoff = nf_ct_ipv6_skip_exthdr(skb, extoff, &pnum, |
173 | skb->len - extoff); | |
174 | if (protoff > skb->len || pnum == NEXTHDR_FRAGMENT) { | |
0d53778e | 175 | pr_debug("proto header not found\n"); |
dc808fe2 | 176 | return NF_ACCEPT; |
9fb9cbb1 YK |
177 | } |
178 | ||
3db05fea | 179 | ret = helper->help(skb, protoff, ct, ctinfo); |
74f7a655 PM |
180 | if (ret != NF_ACCEPT) { |
181 | nf_log_packet(NFPROTO_IPV6, hooknum, skb, in, out, NULL, | |
182 | "nf_ct_%s: dropping packet", helper->name); | |
dc808fe2 | 183 | return ret; |
74f7a655 | 184 | } |
dc808fe2 | 185 | out: |
9fb9cbb1 | 186 | /* We've seen it coming out the other side: confirm it */ |
3db05fea | 187 | return nf_conntrack_confirm(skb); |
9fb9cbb1 YK |
188 | } |
189 | ||
0b5ccb2e PM |
190 | static enum ip6_defrag_users nf_ct6_defrag_user(unsigned int hooknum, |
191 | struct sk_buff *skb) | |
192 | { | |
193 | if (hooknum == NF_INET_PRE_ROUTING) | |
194 | return IP6_DEFRAG_CONNTRACK_IN; | |
195 | else | |
196 | return IP6_DEFRAG_CONNTRACK_OUT; | |
197 | ||
198 | } | |
199 | ||
9fb9cbb1 | 200 | static unsigned int ipv6_defrag(unsigned int hooknum, |
3db05fea | 201 | struct sk_buff *skb, |
9fb9cbb1 YK |
202 | const struct net_device *in, |
203 | const struct net_device *out, | |
204 | int (*okfn)(struct sk_buff *)) | |
205 | { | |
206 | struct sk_buff *reasm; | |
207 | ||
208 | /* Previously seen (loopback)? */ | |
3db05fea | 209 | if (skb->nfct) |
9fb9cbb1 YK |
210 | return NF_ACCEPT; |
211 | ||
0b5ccb2e | 212 | reasm = nf_ct_frag6_gather(skb, nf_ct6_defrag_user(hooknum, skb)); |
9fb9cbb1 YK |
213 | /* queued */ |
214 | if (reasm == NULL) | |
215 | return NF_STOLEN; | |
216 | ||
217 | /* error occured or not fragmented */ | |
3db05fea | 218 | if (reasm == skb) |
9fb9cbb1 YK |
219 | return NF_ACCEPT; |
220 | ||
221 | nf_ct_frag6_output(hooknum, reasm, (struct net_device *)in, | |
222 | (struct net_device *)out, okfn); | |
223 | ||
224 | return NF_STOLEN; | |
225 | } | |
226 | ||
a702a65f AD |
227 | static unsigned int __ipv6_conntrack_in(struct net *net, |
228 | unsigned int hooknum, | |
229 | struct sk_buff *skb, | |
230 | int (*okfn)(struct sk_buff *)) | |
9fb9cbb1 | 231 | { |
3db05fea | 232 | struct sk_buff *reasm = skb->nfct_reasm; |
9fb9cbb1 YK |
233 | |
234 | /* This packet is fragmented and has reassembled packet. */ | |
235 | if (reasm) { | |
236 | /* Reassembled packet isn't parsed yet ? */ | |
237 | if (!reasm->nfct) { | |
238 | unsigned int ret; | |
239 | ||
a702a65f | 240 | ret = nf_conntrack_in(net, PF_INET6, hooknum, reasm); |
9fb9cbb1 YK |
241 | if (ret != NF_ACCEPT) |
242 | return ret; | |
243 | } | |
244 | nf_conntrack_get(reasm->nfct); | |
3db05fea HX |
245 | skb->nfct = reasm->nfct; |
246 | skb->nfctinfo = reasm->nfctinfo; | |
9fb9cbb1 YK |
247 | return NF_ACCEPT; |
248 | } | |
249 | ||
a702a65f AD |
250 | return nf_conntrack_in(net, PF_INET6, hooknum, skb); |
251 | } | |
252 | ||
253 | static unsigned int ipv6_conntrack_in(unsigned int hooknum, | |
254 | struct sk_buff *skb, | |
255 | const struct net_device *in, | |
256 | const struct net_device *out, | |
257 | int (*okfn)(struct sk_buff *)) | |
258 | { | |
259 | return __ipv6_conntrack_in(dev_net(in), hooknum, skb, okfn); | |
9fb9cbb1 YK |
260 | } |
261 | ||
262 | static unsigned int ipv6_conntrack_local(unsigned int hooknum, | |
3db05fea | 263 | struct sk_buff *skb, |
9fb9cbb1 YK |
264 | const struct net_device *in, |
265 | const struct net_device *out, | |
266 | int (*okfn)(struct sk_buff *)) | |
267 | { | |
268 | /* root is playing with raw sockets. */ | |
3db05fea | 269 | if (skb->len < sizeof(struct ipv6hdr)) { |
9fb9cbb1 YK |
270 | if (net_ratelimit()) |
271 | printk("ipv6_conntrack_local: packet too short\n"); | |
272 | return NF_ACCEPT; | |
273 | } | |
a702a65f | 274 | return __ipv6_conntrack_in(dev_net(out), hooknum, skb, okfn); |
9fb9cbb1 YK |
275 | } |
276 | ||
1999414a | 277 | static struct nf_hook_ops ipv6_conntrack_ops[] __read_mostly = { |
964ddaa1 PM |
278 | { |
279 | .hook = ipv6_defrag, | |
280 | .owner = THIS_MODULE, | |
57750a22 | 281 | .pf = NFPROTO_IPV6, |
6e23ae2a | 282 | .hooknum = NF_INET_PRE_ROUTING, |
964ddaa1 PM |
283 | .priority = NF_IP6_PRI_CONNTRACK_DEFRAG, |
284 | }, | |
285 | { | |
286 | .hook = ipv6_conntrack_in, | |
287 | .owner = THIS_MODULE, | |
57750a22 | 288 | .pf = NFPROTO_IPV6, |
6e23ae2a | 289 | .hooknum = NF_INET_PRE_ROUTING, |
964ddaa1 PM |
290 | .priority = NF_IP6_PRI_CONNTRACK, |
291 | }, | |
292 | { | |
293 | .hook = ipv6_conntrack_local, | |
294 | .owner = THIS_MODULE, | |
57750a22 | 295 | .pf = NFPROTO_IPV6, |
6e23ae2a | 296 | .hooknum = NF_INET_LOCAL_OUT, |
964ddaa1 PM |
297 | .priority = NF_IP6_PRI_CONNTRACK, |
298 | }, | |
299 | { | |
300 | .hook = ipv6_defrag, | |
301 | .owner = THIS_MODULE, | |
57750a22 | 302 | .pf = NFPROTO_IPV6, |
6e23ae2a | 303 | .hooknum = NF_INET_LOCAL_OUT, |
964ddaa1 PM |
304 | .priority = NF_IP6_PRI_CONNTRACK_DEFRAG, |
305 | }, | |
306 | { | |
307 | .hook = ipv6_confirm, | |
308 | .owner = THIS_MODULE, | |
57750a22 | 309 | .pf = NFPROTO_IPV6, |
6e23ae2a | 310 | .hooknum = NF_INET_POST_ROUTING, |
964ddaa1 PM |
311 | .priority = NF_IP6_PRI_LAST, |
312 | }, | |
313 | { | |
314 | .hook = ipv6_confirm, | |
315 | .owner = THIS_MODULE, | |
57750a22 | 316 | .pf = NFPROTO_IPV6, |
6e23ae2a | 317 | .hooknum = NF_INET_LOCAL_IN, |
964ddaa1 PM |
318 | .priority = NF_IP6_PRI_LAST-1, |
319 | }, | |
9fb9cbb1 YK |
320 | }; |
321 | ||
e281db5c | 322 | #if defined(CONFIG_NF_CT_NETLINK) || defined(CONFIG_NF_CT_NETLINK_MODULE) |
c1d10adb PNA |
323 | |
324 | #include <linux/netfilter/nfnetlink.h> | |
325 | #include <linux/netfilter/nfnetlink_conntrack.h> | |
326 | ||
fdf70832 | 327 | static int ipv6_tuple_to_nlattr(struct sk_buff *skb, |
c1d10adb PNA |
328 | const struct nf_conntrack_tuple *tuple) |
329 | { | |
df6fb868 | 330 | NLA_PUT(skb, CTA_IP_V6_SRC, sizeof(u_int32_t) * 4, |
c1d10adb | 331 | &tuple->src.u3.ip6); |
df6fb868 | 332 | NLA_PUT(skb, CTA_IP_V6_DST, sizeof(u_int32_t) * 4, |
c1d10adb PNA |
333 | &tuple->dst.u3.ip6); |
334 | return 0; | |
335 | ||
df6fb868 | 336 | nla_put_failure: |
c1d10adb PNA |
337 | return -1; |
338 | } | |
339 | ||
f73e924c PM |
340 | static const struct nla_policy ipv6_nla_policy[CTA_IP_MAX+1] = { |
341 | [CTA_IP_V6_SRC] = { .len = sizeof(u_int32_t)*4 }, | |
342 | [CTA_IP_V6_DST] = { .len = sizeof(u_int32_t)*4 }, | |
c1d10adb PNA |
343 | }; |
344 | ||
fdf70832 | 345 | static int ipv6_nlattr_to_tuple(struct nlattr *tb[], |
c1d10adb PNA |
346 | struct nf_conntrack_tuple *t) |
347 | { | |
df6fb868 | 348 | if (!tb[CTA_IP_V6_SRC] || !tb[CTA_IP_V6_DST]) |
c1d10adb PNA |
349 | return -EINVAL; |
350 | ||
df6fb868 | 351 | memcpy(&t->src.u3.ip6, nla_data(tb[CTA_IP_V6_SRC]), |
c1d10adb | 352 | sizeof(u_int32_t) * 4); |
df6fb868 | 353 | memcpy(&t->dst.u3.ip6, nla_data(tb[CTA_IP_V6_DST]), |
c1d10adb PNA |
354 | sizeof(u_int32_t) * 4); |
355 | ||
356 | return 0; | |
357 | } | |
a400c30e HE |
358 | |
359 | static int ipv6_nlattr_tuple_size(void) | |
360 | { | |
361 | return nla_policy_len(ipv6_nla_policy, CTA_IP_MAX + 1); | |
362 | } | |
c1d10adb PNA |
363 | #endif |
364 | ||
61075af5 | 365 | struct nf_conntrack_l3proto nf_conntrack_l3proto_ipv6 __read_mostly = { |
9fb9cbb1 YK |
366 | .l3proto = PF_INET6, |
367 | .name = "ipv6", | |
368 | .pkt_to_tuple = ipv6_pkt_to_tuple, | |
369 | .invert_tuple = ipv6_invert_tuple, | |
370 | .print_tuple = ipv6_print_tuple, | |
ffc30690 | 371 | .get_l4proto = ipv6_get_l4proto, |
e281db5c | 372 | #if defined(CONFIG_NF_CT_NETLINK) || defined(CONFIG_NF_CT_NETLINK_MODULE) |
fdf70832 | 373 | .tuple_to_nlattr = ipv6_tuple_to_nlattr, |
a400c30e | 374 | .nlattr_tuple_size = ipv6_nlattr_tuple_size, |
fdf70832 | 375 | .nlattr_to_tuple = ipv6_nlattr_to_tuple, |
f73e924c | 376 | .nla_policy = ipv6_nla_policy, |
933a41e7 PM |
377 | #endif |
378 | #ifdef CONFIG_SYSCTL | |
379 | .ctl_table_path = nf_net_netfilter_sysctl_path, | |
380 | .ctl_table = nf_ct_ipv6_sysctl_table, | |
c1d10adb | 381 | #endif |
9fb9cbb1 YK |
382 | .me = THIS_MODULE, |
383 | }; | |
384 | ||
32292a7f PM |
385 | MODULE_ALIAS("nf_conntrack-" __stringify(AF_INET6)); |
386 | MODULE_LICENSE("GPL"); | |
387 | MODULE_AUTHOR("Yasuyuki KOZAKAI @USAGI <yasuyuki.kozakai@toshiba.co.jp>"); | |
388 | ||
389 | static int __init nf_conntrack_l3proto_ipv6_init(void) | |
9fb9cbb1 YK |
390 | { |
391 | int ret = 0; | |
392 | ||
32292a7f | 393 | need_conntrack(); |
9fb9cbb1 YK |
394 | |
395 | ret = nf_ct_frag6_init(); | |
396 | if (ret < 0) { | |
397 | printk("nf_conntrack_ipv6: can't initialize frag6.\n"); | |
32292a7f | 398 | return ret; |
9fb9cbb1 | 399 | } |
605dcad6 | 400 | ret = nf_conntrack_l4proto_register(&nf_conntrack_l4proto_tcp6); |
9fb9cbb1 YK |
401 | if (ret < 0) { |
402 | printk("nf_conntrack_ipv6: can't register tcp.\n"); | |
403 | goto cleanup_frag6; | |
404 | } | |
405 | ||
605dcad6 | 406 | ret = nf_conntrack_l4proto_register(&nf_conntrack_l4proto_udp6); |
9fb9cbb1 YK |
407 | if (ret < 0) { |
408 | printk("nf_conntrack_ipv6: can't register udp.\n"); | |
409 | goto cleanup_tcp; | |
410 | } | |
411 | ||
605dcad6 | 412 | ret = nf_conntrack_l4proto_register(&nf_conntrack_l4proto_icmpv6); |
9fb9cbb1 YK |
413 | if (ret < 0) { |
414 | printk("nf_conntrack_ipv6: can't register icmpv6.\n"); | |
415 | goto cleanup_udp; | |
416 | } | |
417 | ||
418 | ret = nf_conntrack_l3proto_register(&nf_conntrack_l3proto_ipv6); | |
419 | if (ret < 0) { | |
420 | printk("nf_conntrack_ipv6: can't register ipv6\n"); | |
421 | goto cleanup_icmpv6; | |
422 | } | |
423 | ||
964ddaa1 PM |
424 | ret = nf_register_hooks(ipv6_conntrack_ops, |
425 | ARRAY_SIZE(ipv6_conntrack_ops)); | |
9fb9cbb1 YK |
426 | if (ret < 0) { |
427 | printk("nf_conntrack_ipv6: can't register pre-routing defrag " | |
428 | "hook.\n"); | |
429 | goto cleanup_ipv6; | |
430 | } | |
9fb9cbb1 YK |
431 | return ret; |
432 | ||
9fb9cbb1 YK |
433 | cleanup_ipv6: |
434 | nf_conntrack_l3proto_unregister(&nf_conntrack_l3proto_ipv6); | |
435 | cleanup_icmpv6: | |
605dcad6 | 436 | nf_conntrack_l4proto_unregister(&nf_conntrack_l4proto_icmpv6); |
9fb9cbb1 | 437 | cleanup_udp: |
605dcad6 | 438 | nf_conntrack_l4proto_unregister(&nf_conntrack_l4proto_udp6); |
9fb9cbb1 | 439 | cleanup_tcp: |
605dcad6 | 440 | nf_conntrack_l4proto_unregister(&nf_conntrack_l4proto_tcp6); |
9fb9cbb1 YK |
441 | cleanup_frag6: |
442 | nf_ct_frag6_cleanup(); | |
9fb9cbb1 YK |
443 | return ret; |
444 | } | |
445 | ||
65b4b4e8 | 446 | static void __exit nf_conntrack_l3proto_ipv6_fini(void) |
9fb9cbb1 | 447 | { |
32292a7f | 448 | synchronize_net(); |
32292a7f PM |
449 | nf_unregister_hooks(ipv6_conntrack_ops, ARRAY_SIZE(ipv6_conntrack_ops)); |
450 | nf_conntrack_l3proto_unregister(&nf_conntrack_l3proto_ipv6); | |
605dcad6 MJ |
451 | nf_conntrack_l4proto_unregister(&nf_conntrack_l4proto_icmpv6); |
452 | nf_conntrack_l4proto_unregister(&nf_conntrack_l4proto_udp6); | |
453 | nf_conntrack_l4proto_unregister(&nf_conntrack_l4proto_tcp6); | |
32292a7f | 454 | nf_ct_frag6_cleanup(); |
9fb9cbb1 YK |
455 | } |
456 | ||
65b4b4e8 AM |
457 | module_init(nf_conntrack_l3proto_ipv6_init); |
458 | module_exit(nf_conntrack_l3proto_ipv6_fini); |