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a10e763b | 1 | // SPDX-License-Identifier: GPL-2.0-only |
101367c2 TG |
2 | /* |
3 | * net/ipv6/fib6_rules.c IPv6 Routing Policy Rules | |
4 | * | |
5 | * Copyright (C)2003-2006 Helsinki University of Technology | |
6 | * Copyright (C)2003-2006 USAGI/WIDE Project | |
7 | * | |
101367c2 TG |
8 | * Authors |
9 | * Thomas Graf <tgraf@suug.ch> | |
10 | * Ville Nuorvala <vnuorval@tcs.hut.fi> | |
11 | */ | |
12 | ||
101367c2 | 13 | #include <linux/netdevice.h> |
dcb18f76 | 14 | #include <linux/notifier.h> |
bc3b2d7f | 15 | #include <linux/export.h> |
101367c2 TG |
16 | |
17 | #include <net/fib_rules.h> | |
18 | #include <net/ipv6.h> | |
29f6af77 | 19 | #include <net/addrconf.h> |
101367c2 TG |
20 | #include <net/ip6_route.h> |
21 | #include <net/netlink.h> | |
22 | ||
911c8541 | 23 | struct fib6_rule { |
101367c2 TG |
24 | struct fib_rule common; |
25 | struct rt6key src; | |
26 | struct rt6key dst; | |
27 | u8 tclass; | |
28 | }; | |
29 | ||
e3ea9731 IS |
30 | static bool fib6_rule_matchall(const struct fib_rule *rule) |
31 | { | |
32 | struct fib6_rule *r = container_of(rule, struct fib6_rule, common); | |
33 | ||
34 | if (r->dst.plen || r->src.plen || r->tclass) | |
35 | return false; | |
36 | return fib_rule_matchall(rule); | |
37 | } | |
38 | ||
39 | bool fib6_rule_default(const struct fib_rule *rule) | |
40 | { | |
41 | if (!fib6_rule_matchall(rule) || rule->action != FR_ACT_TO_TBL || | |
42 | rule->l3mdev) | |
43 | return false; | |
44 | if (rule->table != RT6_TABLE_LOCAL && rule->table != RT6_TABLE_MAIN) | |
45 | return false; | |
46 | return true; | |
47 | } | |
48 | EXPORT_SYMBOL_GPL(fib6_rule_default); | |
49 | ||
dcb18f76 IS |
50 | int fib6_rules_dump(struct net *net, struct notifier_block *nb) |
51 | { | |
52 | return fib_rules_dump(net, nb, AF_INET6); | |
53 | } | |
54 | ||
55 | unsigned int fib6_rules_seq_read(struct net *net) | |
56 | { | |
57 | return fib_rules_seq_read(net, AF_INET6); | |
58 | } | |
59 | ||
138118ec | 60 | /* called with rcu lock held; no reference taken on fib6_info */ |
effda4dd DA |
61 | int fib6_lookup(struct net *net, int oif, struct flowi6 *fl6, |
62 | struct fib6_result *res, int flags) | |
138118ec | 63 | { |
138118ec DA |
64 | int err; |
65 | ||
66 | if (net->ipv6.fib6_has_custom_rules) { | |
67 | struct fib_lookup_arg arg = { | |
68 | .lookup_ptr = fib6_table_lookup, | |
69 | .lookup_data = &oif, | |
effda4dd | 70 | .result = res, |
138118ec DA |
71 | .flags = FIB_LOOKUP_NOREF, |
72 | }; | |
73 | ||
74 | l3mdev_update_flow(net, flowi6_to_flowi(fl6)); | |
75 | ||
76 | err = fib_rules_lookup(net->ipv6.fib6_rules_ops, | |
77 | flowi6_to_flowi(fl6), flags, &arg); | |
138118ec | 78 | } else { |
effda4dd DA |
79 | err = fib6_table_lookup(net, net->ipv6.fib6_local_tbl, oif, |
80 | fl6, res, flags); | |
81 | if (err || res->f6i == net->ipv6.fib6_null_entry) | |
82 | err = fib6_table_lookup(net, net->ipv6.fib6_main_tbl, | |
83 | oif, fl6, res, flags); | |
138118ec DA |
84 | } |
85 | ||
effda4dd | 86 | return err; |
138118ec DA |
87 | } |
88 | ||
4c9483b2 | 89 | struct dst_entry *fib6_rule_lookup(struct net *net, struct flowi6 *fl6, |
b75cc8f9 | 90 | const struct sk_buff *skb, |
58f09b78 | 91 | int flags, pol_lookup_t lookup) |
101367c2 | 92 | { |
feca7d8c | 93 | if (net->ipv6.fib6_has_custom_rules) { |
a65120ba | 94 | struct fib6_result res = {}; |
feca7d8c VB |
95 | struct fib_lookup_arg arg = { |
96 | .lookup_ptr = lookup, | |
b75cc8f9 | 97 | .lookup_data = skb, |
a65120ba | 98 | .result = &res, |
feca7d8c VB |
99 | .flags = FIB_LOOKUP_NOREF, |
100 | }; | |
101 | ||
102 | /* update flow if oif or iif point to device enslaved to l3mdev */ | |
103 | l3mdev_update_flow(net, flowi6_to_flowi(fl6)); | |
104 | ||
105 | fib_rules_lookup(net->ipv6.fib6_rules_ops, | |
106 | flowi6_to_flowi(fl6), flags, &arg); | |
107 | ||
a65120ba DA |
108 | if (res.rt6) |
109 | return &res.rt6->dst; | |
feca7d8c VB |
110 | } else { |
111 | struct rt6_info *rt; | |
112 | ||
b75cc8f9 | 113 | rt = lookup(net, net->ipv6.fib6_local_tbl, fl6, skb, flags); |
feca7d8c VB |
114 | if (rt != net->ipv6.ip6_null_entry && rt->dst.error != -EAGAIN) |
115 | return &rt->dst; | |
d64a1f57 | 116 | ip6_rt_put_flags(rt, flags); |
b75cc8f9 | 117 | rt = lookup(net, net->ipv6.fib6_main_tbl, fl6, skb, flags); |
feca7d8c VB |
118 | if (rt->dst.error != -EAGAIN) |
119 | return &rt->dst; | |
d64a1f57 | 120 | ip6_rt_put_flags(rt, flags); |
feca7d8c | 121 | } |
b1429553 | 122 | |
d64a1f57 WW |
123 | if (!(flags & RT6_LOOKUP_F_DST_NOREF)) |
124 | dst_hold(&net->ipv6.ip6_null_entry->dst); | |
07f61557 | 125 | return &net->ipv6.ip6_null_entry->dst; |
101367c2 TG |
126 | } |
127 | ||
cc065a9e DA |
128 | static int fib6_rule_saddr(struct net *net, struct fib_rule *rule, int flags, |
129 | struct flowi6 *flp6, const struct net_device *dev) | |
130 | { | |
131 | struct fib6_rule *r = (struct fib6_rule *)rule; | |
132 | ||
133 | /* If we need to find a source address for this traffic, | |
134 | * we check the result if it meets requirement of the rule. | |
135 | */ | |
136 | if ((rule->flags & FIB_RULE_FIND_SADDR) && | |
137 | r->src.plen && !(flags & RT6_LOOKUP_F_HAS_SADDR)) { | |
138 | struct in6_addr saddr; | |
139 | ||
140 | if (ipv6_dev_get_saddr(net, dev, &flp6->daddr, | |
141 | rt6_flags2srcprefs(flags), &saddr)) | |
142 | return -EAGAIN; | |
143 | ||
144 | if (!ipv6_prefix_equal(&saddr, &r->src.addr, r->src.plen)) | |
145 | return -EAGAIN; | |
146 | ||
147 | flp6->saddr = saddr; | |
148 | } | |
149 | ||
150 | return 0; | |
151 | } | |
152 | ||
138118ec DA |
153 | static int fib6_rule_action_alt(struct fib_rule *rule, struct flowi *flp, |
154 | int flags, struct fib_lookup_arg *arg) | |
155 | { | |
effda4dd | 156 | struct fib6_result *res = arg->result; |
138118ec DA |
157 | struct flowi6 *flp6 = &flp->u.ip6; |
158 | struct net *net = rule->fr_net; | |
159 | struct fib6_table *table; | |
b2f97f7d | 160 | int err, *oif; |
138118ec DA |
161 | u32 tb_id; |
162 | ||
163 | switch (rule->action) { | |
164 | case FR_ACT_TO_TBL: | |
165 | break; | |
166 | case FR_ACT_UNREACHABLE: | |
167 | return -ENETUNREACH; | |
168 | case FR_ACT_PROHIBIT: | |
169 | return -EACCES; | |
170 | case FR_ACT_BLACKHOLE: | |
171 | default: | |
172 | return -EINVAL; | |
173 | } | |
174 | ||
175 | tb_id = fib_rule_get_table(rule, arg); | |
176 | table = fib6_get_table(net, tb_id); | |
177 | if (!table) | |
178 | return -EAGAIN; | |
179 | ||
180 | oif = (int *)arg->lookup_data; | |
effda4dd DA |
181 | err = fib6_table_lookup(net, table, *oif, flp6, res, flags); |
182 | if (!err && res->f6i != net->ipv6.fib6_null_entry) | |
138118ec | 183 | err = fib6_rule_saddr(net, rule, flags, flp6, |
effda4dd | 184 | res->nh->fib_nh_dev); |
b2f97f7d DA |
185 | else |
186 | err = -EAGAIN; | |
138118ec DA |
187 | |
188 | return err; | |
189 | } | |
190 | ||
191 | static int __fib6_rule_action(struct fib_rule *rule, struct flowi *flp, | |
192 | int flags, struct fib_lookup_arg *arg) | |
101367c2 | 193 | { |
a65120ba | 194 | struct fib6_result *res = arg->result; |
4c9483b2 | 195 | struct flowi6 *flp6 = &flp->u.ip6; |
101367c2 TG |
196 | struct rt6_info *rt = NULL; |
197 | struct fib6_table *table; | |
8ed67789 | 198 | struct net *net = rule->fr_net; |
101367c2 | 199 | pol_lookup_t lookup = arg->lookup_ptr; |
46b3a421 | 200 | int err = 0; |
96c63fa7 | 201 | u32 tb_id; |
101367c2 TG |
202 | |
203 | switch (rule->action) { | |
204 | case FR_ACT_TO_TBL: | |
205 | break; | |
206 | case FR_ACT_UNREACHABLE: | |
46b3a421 | 207 | err = -ENETUNREACH; |
8ed67789 | 208 | rt = net->ipv6.ip6_null_entry; |
101367c2 TG |
209 | goto discard_pkt; |
210 | default: | |
211 | case FR_ACT_BLACKHOLE: | |
46b3a421 | 212 | err = -EINVAL; |
8ed67789 | 213 | rt = net->ipv6.ip6_blk_hole_entry; |
101367c2 TG |
214 | goto discard_pkt; |
215 | case FR_ACT_PROHIBIT: | |
46b3a421 | 216 | err = -EACCES; |
8ed67789 | 217 | rt = net->ipv6.ip6_prohibit_entry; |
101367c2 TG |
218 | goto discard_pkt; |
219 | } | |
220 | ||
96c63fa7 DA |
221 | tb_id = fib_rule_get_table(rule, arg); |
222 | table = fib6_get_table(net, tb_id); | |
46b3a421 HFS |
223 | if (!table) { |
224 | err = -EAGAIN; | |
225 | goto out; | |
226 | } | |
101367c2 | 227 | |
b75cc8f9 | 228 | rt = lookup(net, table, flp6, arg->lookup_data, flags); |
8ed67789 | 229 | if (rt != net->ipv6.ip6_null_entry) { |
cc065a9e DA |
230 | err = fib6_rule_saddr(net, rule, flags, flp6, |
231 | ip6_dst_idev(&rt->dst)->dev); | |
232 | ||
233 | if (err == -EAGAIN) | |
234 | goto again; | |
235 | ||
73ba57bf | 236 | err = rt->dst.error; |
07f61557 SP |
237 | if (err != -EAGAIN) |
238 | goto out; | |
29f6af77 YH |
239 | } |
240 | again: | |
d64a1f57 | 241 | ip6_rt_put_flags(rt, flags); |
46b3a421 | 242 | err = -EAGAIN; |
3226f688 PM |
243 | rt = NULL; |
244 | goto out; | |
245 | ||
101367c2 | 246 | discard_pkt: |
d64a1f57 WW |
247 | if (!(flags & RT6_LOOKUP_F_DST_NOREF)) |
248 | dst_hold(&rt->dst); | |
101367c2 | 249 | out: |
a65120ba | 250 | res->rt6 = rt; |
46b3a421 | 251 | return err; |
101367c2 TG |
252 | } |
253 | ||
138118ec DA |
254 | static int fib6_rule_action(struct fib_rule *rule, struct flowi *flp, |
255 | int flags, struct fib_lookup_arg *arg) | |
256 | { | |
257 | if (arg->lookup_ptr == fib6_table_lookup) | |
258 | return fib6_rule_action_alt(rule, flp, flags, arg); | |
259 | ||
260 | return __fib6_rule_action(rule, flp, flags, arg); | |
261 | } | |
262 | ||
c1b8d5ab | 263 | static bool fib6_rule_suppress(struct fib_rule *rule, int flags, struct fib_lookup_arg *arg) |
7764a45a | 264 | { |
a65120ba DA |
265 | struct fib6_result *res = arg->result; |
266 | struct rt6_info *rt = res->rt6; | |
673498b8 ST |
267 | struct net_device *dev = NULL; |
268 | ||
a65120ba DA |
269 | if (!rt) |
270 | return false; | |
271 | ||
673498b8 ST |
272 | if (rt->rt6i_idev) |
273 | dev = rt->rt6i_idev->dev; | |
274 | ||
7764a45a ST |
275 | /* do not accept result if the route does |
276 | * not meet the required prefix length | |
277 | */ | |
73f5698e | 278 | if (rt->rt6i_dst.plen <= rule->suppress_prefixlen) |
6ef94cfa ST |
279 | goto suppress_route; |
280 | ||
281 | /* do not accept result if the route uses a device | |
282 | * belonging to a forbidden interface group | |
283 | */ | |
284 | if (rule->suppress_ifgroup != -1 && dev && dev->group == rule->suppress_ifgroup) | |
285 | goto suppress_route; | |
286 | ||
287 | return false; | |
288 | ||
289 | suppress_route: | |
c1b8d5ab | 290 | ip6_rt_put_flags(rt, flags); |
04f0888d | 291 | return true; |
7764a45a | 292 | } |
101367c2 TG |
293 | |
294 | static int fib6_rule_match(struct fib_rule *rule, struct flowi *fl, int flags) | |
295 | { | |
296 | struct fib6_rule *r = (struct fib6_rule *) rule; | |
4c9483b2 | 297 | struct flowi6 *fl6 = &fl->u.ip6; |
101367c2 | 298 | |
adaa70bb | 299 | if (r->dst.plen && |
4c9483b2 | 300 | !ipv6_prefix_equal(&fl6->daddr, &r->dst.addr, r->dst.plen)) |
101367c2 TG |
301 | return 0; |
302 | ||
29f6af77 YH |
303 | /* |
304 | * If FIB_RULE_FIND_SADDR is set and we do not have a | |
305 | * source address for the traffic, we defer check for | |
306 | * source address. | |
307 | */ | |
adaa70bb | 308 | if (r->src.plen) { |
29f6af77 | 309 | if (flags & RT6_LOOKUP_F_HAS_SADDR) { |
4c9483b2 | 310 | if (!ipv6_prefix_equal(&fl6->saddr, &r->src.addr, |
29f6af77 YH |
311 | r->src.plen)) |
312 | return 0; | |
313 | } else if (!(r->common.flags & FIB_RULE_FIND_SADDR)) | |
adaa70bb TG |
314 | return 0; |
315 | } | |
101367c2 | 316 | |
d76ed22b | 317 | if (r->tclass && r->tclass != ip6_tclass(fl6->flowlabel)) |
2cc67cc7 YH |
318 | return 0; |
319 | ||
bb0ad198 RP |
320 | if (rule->ip_proto && (rule->ip_proto != fl6->flowi6_proto)) |
321 | return 0; | |
322 | ||
323 | if (fib_rule_port_range_set(&rule->sport_range) && | |
324 | !fib_rule_port_inrange(&rule->sport_range, fl6->fl6_sport)) | |
325 | return 0; | |
326 | ||
327 | if (fib_rule_port_range_set(&rule->dport_range) && | |
328 | !fib_rule_port_inrange(&rule->dport_range, fl6->fl6_dport)) | |
329 | return 0; | |
330 | ||
101367c2 TG |
331 | return 1; |
332 | } | |
333 | ||
ef7c79ed | 334 | static const struct nla_policy fib6_rule_policy[FRA_MAX+1] = { |
1f6c9557 | 335 | FRA_GENERIC_POLICY, |
101367c2 TG |
336 | }; |
337 | ||
338 | static int fib6_rule_configure(struct fib_rule *rule, struct sk_buff *skb, | |
8b3521ee | 339 | struct fib_rule_hdr *frh, |
b16fb418 RP |
340 | struct nlattr **tb, |
341 | struct netlink_ext_ack *extack) | |
101367c2 TG |
342 | { |
343 | int err = -EINVAL; | |
3b1e0a65 | 344 | struct net *net = sock_net(skb->sk); |
101367c2 TG |
345 | struct fib6_rule *rule6 = (struct fib6_rule *) rule; |
346 | ||
96c63fa7 | 347 | if (rule->action == FR_ACT_TO_TBL && !rule->l3mdev) { |
b16fb418 RP |
348 | if (rule->table == RT6_TABLE_UNSPEC) { |
349 | NL_SET_ERR_MSG(extack, "Invalid table"); | |
101367c2 | 350 | goto errout; |
b16fb418 | 351 | } |
101367c2 | 352 | |
dcabb819 | 353 | if (fib6_new_table(net, rule->table) == NULL) { |
101367c2 TG |
354 | err = -ENOBUFS; |
355 | goto errout; | |
356 | } | |
357 | } | |
358 | ||
e1701c68 | 359 | if (frh->src_len) |
67b61f6c | 360 | rule6->src.addr = nla_get_in6_addr(tb[FRA_SRC]); |
101367c2 | 361 | |
e1701c68 | 362 | if (frh->dst_len) |
67b61f6c | 363 | rule6->dst.addr = nla_get_in6_addr(tb[FRA_DST]); |
101367c2 TG |
364 | |
365 | rule6->src.plen = frh->src_len; | |
366 | rule6->dst.plen = frh->dst_len; | |
367 | rule6->tclass = frh->tos; | |
368 | ||
5e5d6fed RP |
369 | if (fib_rule_requires_fldissect(rule)) |
370 | net->ipv6.fib6_rules_require_fldissect++; | |
371 | ||
feca7d8c | 372 | net->ipv6.fib6_has_custom_rules = true; |
101367c2 TG |
373 | err = 0; |
374 | errout: | |
375 | return err; | |
376 | } | |
377 | ||
5e5d6fed RP |
378 | static int fib6_rule_delete(struct fib_rule *rule) |
379 | { | |
380 | struct net *net = rule->fr_net; | |
381 | ||
382 | if (net->ipv6.fib6_rules_require_fldissect && | |
383 | fib_rule_requires_fldissect(rule)) | |
384 | net->ipv6.fib6_rules_require_fldissect--; | |
385 | ||
386 | return 0; | |
387 | } | |
388 | ||
101367c2 TG |
389 | static int fib6_rule_compare(struct fib_rule *rule, struct fib_rule_hdr *frh, |
390 | struct nlattr **tb) | |
391 | { | |
392 | struct fib6_rule *rule6 = (struct fib6_rule *) rule; | |
393 | ||
394 | if (frh->src_len && (rule6->src.plen != frh->src_len)) | |
395 | return 0; | |
396 | ||
397 | if (frh->dst_len && (rule6->dst.plen != frh->dst_len)) | |
398 | return 0; | |
399 | ||
400 | if (frh->tos && (rule6->tclass != frh->tos)) | |
401 | return 0; | |
402 | ||
e1701c68 | 403 | if (frh->src_len && |
101367c2 TG |
404 | nla_memcmp(tb[FRA_SRC], &rule6->src.addr, sizeof(struct in6_addr))) |
405 | return 0; | |
406 | ||
e1701c68 | 407 | if (frh->dst_len && |
101367c2 TG |
408 | nla_memcmp(tb[FRA_DST], &rule6->dst.addr, sizeof(struct in6_addr))) |
409 | return 0; | |
410 | ||
411 | return 1; | |
412 | } | |
413 | ||
414 | static int fib6_rule_fill(struct fib_rule *rule, struct sk_buff *skb, | |
04af8cf6 | 415 | struct fib_rule_hdr *frh) |
101367c2 TG |
416 | { |
417 | struct fib6_rule *rule6 = (struct fib6_rule *) rule; | |
418 | ||
101367c2 TG |
419 | frh->dst_len = rule6->dst.plen; |
420 | frh->src_len = rule6->src.plen; | |
421 | frh->tos = rule6->tclass; | |
422 | ||
c78679e8 | 423 | if ((rule6->dst.plen && |
930345ea | 424 | nla_put_in6_addr(skb, FRA_DST, &rule6->dst.addr)) || |
c78679e8 | 425 | (rule6->src.plen && |
930345ea | 426 | nla_put_in6_addr(skb, FRA_SRC, &rule6->src.addr))) |
c78679e8 | 427 | goto nla_put_failure; |
101367c2 TG |
428 | return 0; |
429 | ||
430 | nla_put_failure: | |
431 | return -ENOBUFS; | |
432 | } | |
433 | ||
339bf98f TG |
434 | static size_t fib6_rule_nlmsg_payload(struct fib_rule *rule) |
435 | { | |
436 | return nla_total_size(16) /* dst */ | |
437 | + nla_total_size(16); /* src */ | |
438 | } | |
439 | ||
04a6f82c | 440 | static const struct fib_rules_ops __net_initconst fib6_rules_ops_template = { |
25239cee | 441 | .family = AF_INET6, |
101367c2 | 442 | .rule_size = sizeof(struct fib6_rule), |
e1701c68 | 443 | .addr_size = sizeof(struct in6_addr), |
101367c2 TG |
444 | .action = fib6_rule_action, |
445 | .match = fib6_rule_match, | |
7764a45a | 446 | .suppress = fib6_rule_suppress, |
101367c2 | 447 | .configure = fib6_rule_configure, |
5e5d6fed | 448 | .delete = fib6_rule_delete, |
101367c2 TG |
449 | .compare = fib6_rule_compare, |
450 | .fill = fib6_rule_fill, | |
339bf98f | 451 | .nlmsg_payload = fib6_rule_nlmsg_payload, |
101367c2 TG |
452 | .nlgroup = RTNLGRP_IPV6_RULE, |
453 | .policy = fib6_rule_policy, | |
101367c2 | 454 | .owner = THIS_MODULE, |
03592383 | 455 | .fro_net = &init_net, |
101367c2 TG |
456 | }; |
457 | ||
2c8c1e72 | 458 | static int __net_init fib6_rules_net_init(struct net *net) |
101367c2 | 459 | { |
e9c5158a | 460 | struct fib_rules_ops *ops; |
dcabb819 | 461 | int err = -ENOMEM; |
2994c638 | 462 | |
e9c5158a EB |
463 | ops = fib_rules_register(&fib6_rules_ops_template, net); |
464 | if (IS_ERR(ops)) | |
465 | return PTR_ERR(ops); | |
eb5564b8 | 466 | |
85b99092 | 467 | err = fib_default_rule_add(ops, 0, RT6_TABLE_LOCAL, 0); |
dcabb819 DL |
468 | if (err) |
469 | goto out_fib6_rules_ops; | |
9eb87f3f | 470 | |
85b99092 | 471 | err = fib_default_rule_add(ops, 0x7FFE, RT6_TABLE_MAIN, 0); |
dcabb819 | 472 | if (err) |
e9c5158a | 473 | goto out_fib6_rules_ops; |
9eb87f3f | 474 | |
85b99092 | 475 | net->ipv6.fib6_rules_ops = ops; |
5e5d6fed | 476 | net->ipv6.fib6_rules_require_fldissect = 0; |
9eb87f3f | 477 | out: |
dcabb819 | 478 | return err; |
9eb87f3f | 479 | |
dcabb819 | 480 | out_fib6_rules_ops: |
e9c5158a | 481 | fib_rules_unregister(ops); |
9eb87f3f | 482 | goto out; |
101367c2 TG |
483 | } |
484 | ||
2c8c1e72 | 485 | static void __net_exit fib6_rules_net_exit(struct net *net) |
dcabb819 | 486 | { |
419df12f | 487 | rtnl_lock(); |
dcabb819 | 488 | fib_rules_unregister(net->ipv6.fib6_rules_ops); |
419df12f | 489 | rtnl_unlock(); |
dcabb819 DL |
490 | } |
491 | ||
492 | static struct pernet_operations fib6_rules_net_ops = { | |
493 | .init = fib6_rules_net_init, | |
494 | .exit = fib6_rules_net_exit, | |
495 | }; | |
496 | ||
497 | int __init fib6_rules_init(void) | |
498 | { | |
499 | return register_pernet_subsys(&fib6_rules_net_ops); | |
500 | } | |
501 | ||
502 | ||
101367c2 TG |
503 | void fib6_rules_cleanup(void) |
504 | { | |
ff4e1fb0 | 505 | unregister_pernet_subsys(&fib6_rules_net_ops); |
101367c2 | 506 | } |