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1/*
2 * net/ipv6/fib6_rules.c IPv6 Routing Policy Rules
3 *
4 * Copyright (C)2003-2006 Helsinki University of Technology
5 * Copyright (C)2003-2006 USAGI/WIDE Project
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation, version 2.
10 *
11 * Authors
12 * Thomas Graf <tgraf@suug.ch>
13 * Ville Nuorvala <vnuorval@tcs.hut.fi>
14 */
15
16#include <linux/netdevice.h>
17#include <linux/export.h>
18
19#include <net/fib_rules.h>
20#include <net/ipv6.h>
21#include <net/addrconf.h>
22#include <net/ip6_route.h>
23#include <net/netlink.h>
24
25struct fib6_rule {
26 struct fib_rule common;
27 struct rt6key src;
28 struct rt6key dst;
29 u8 tclass;
30};
31
32struct dst_entry *fib6_rule_lookup(struct net *net, struct flowi6 *fl6,
33 int flags, pol_lookup_t lookup)
34{
35 struct rt6_info *rt;
36 struct fib_lookup_arg arg = {
37 .lookup_ptr = lookup,
38 .flags = FIB_LOOKUP_NOREF,
39 };
40
41 fib_rules_lookup(net->ipv6.fib6_rules_ops,
42 flowi6_to_flowi(fl6), flags, &arg);
43
44 rt = arg.result;
45
46 if (!rt) {
47 dst_hold(&net->ipv6.ip6_null_entry->dst);
48 return &net->ipv6.ip6_null_entry->dst;
49 }
50
51 if (rt->rt6i_flags & RTF_REJECT &&
52 rt->dst.error == -EAGAIN) {
53 ip6_rt_put(rt);
54 rt = net->ipv6.ip6_null_entry;
55 dst_hold(&rt->dst);
56 }
57
58 return &rt->dst;
59}
60
61static int fib6_rule_action(struct fib_rule *rule, struct flowi *flp,
62 int flags, struct fib_lookup_arg *arg)
63{
64 struct flowi6 *flp6 = &flp->u.ip6;
65 struct rt6_info *rt = NULL;
66 struct fib6_table *table;
67 struct net *net = rule->fr_net;
68 pol_lookup_t lookup = arg->lookup_ptr;
69 int err = 0;
70
71 switch (rule->action) {
72 case FR_ACT_TO_TBL:
73 break;
74 case FR_ACT_UNREACHABLE:
75 err = -ENETUNREACH;
76 rt = net->ipv6.ip6_null_entry;
77 goto discard_pkt;
78 default:
79 case FR_ACT_BLACKHOLE:
80 err = -EINVAL;
81 rt = net->ipv6.ip6_blk_hole_entry;
82 goto discard_pkt;
83 case FR_ACT_PROHIBIT:
84 err = -EACCES;
85 rt = net->ipv6.ip6_prohibit_entry;
86 goto discard_pkt;
87 }
88
89 table = fib6_get_table(net, rule->table);
90 if (!table) {
91 err = -EAGAIN;
92 goto out;
93 }
94
95 rt = lookup(net, table, flp6, flags);
96 if (rt != net->ipv6.ip6_null_entry) {
97 struct fib6_rule *r = (struct fib6_rule *)rule;
98
99 /*
100 * If we need to find a source address for this traffic,
101 * we check the result if it meets requirement of the rule.
102 */
103 if ((rule->flags & FIB_RULE_FIND_SADDR) &&
104 r->src.plen && !(flags & RT6_LOOKUP_F_HAS_SADDR)) {
105 struct in6_addr saddr;
106
107 if (ipv6_dev_get_saddr(net,
108 ip6_dst_idev(&rt->dst)->dev,
109 &flp6->daddr,
110 rt6_flags2srcprefs(flags),
111 &saddr))
112 goto again;
113 if (!ipv6_prefix_equal(&saddr, &r->src.addr,
114 r->src.plen))
115 goto again;
116 flp6->saddr = saddr;
117 }
118 err = rt->dst.error;
119 goto out;
120 }
121again:
122 ip6_rt_put(rt);
123 err = -EAGAIN;
124 rt = NULL;
125 goto out;
126
127discard_pkt:
128 dst_hold(&rt->dst);
129out:
130 arg->result = rt;
131 return err;
132}
133
134static bool fib6_rule_suppress(struct fib_rule *rule, struct fib_lookup_arg *arg)
135{
136 struct rt6_info *rt = (struct rt6_info *) arg->result;
137 struct net_device *dev = NULL;
138
139 if (rt->rt6i_idev)
140 dev = rt->rt6i_idev->dev;
141
142 /* do not accept result if the route does
143 * not meet the required prefix length
144 */
145 if (rt->rt6i_dst.plen <= rule->suppress_prefixlen)
146 goto suppress_route;
147
148 /* do not accept result if the route uses a device
149 * belonging to a forbidden interface group
150 */
151 if (rule->suppress_ifgroup != -1 && dev && dev->group == rule->suppress_ifgroup)
152 goto suppress_route;
153
154 return false;
155
156suppress_route:
157 ip6_rt_put(rt);
158 return true;
159}
160
161static int fib6_rule_match(struct fib_rule *rule, struct flowi *fl, int flags)
162{
163 struct fib6_rule *r = (struct fib6_rule *) rule;
164 struct flowi6 *fl6 = &fl->u.ip6;
165
166 if (r->dst.plen &&
167 !ipv6_prefix_equal(&fl6->daddr, &r->dst.addr, r->dst.plen))
168 return 0;
169
170 /*
171 * If FIB_RULE_FIND_SADDR is set and we do not have a
172 * source address for the traffic, we defer check for
173 * source address.
174 */
175 if (r->src.plen) {
176 if (flags & RT6_LOOKUP_F_HAS_SADDR) {
177 if (!ipv6_prefix_equal(&fl6->saddr, &r->src.addr,
178 r->src.plen))
179 return 0;
180 } else if (!(r->common.flags & FIB_RULE_FIND_SADDR))
181 return 0;
182 }
183
184 if (r->tclass && r->tclass != ip6_tclass(fl6->flowlabel))
185 return 0;
186
187 return 1;
188}
189
190static const struct nla_policy fib6_rule_policy[FRA_MAX+1] = {
191 FRA_GENERIC_POLICY,
192};
193
194static int fib6_rule_configure(struct fib_rule *rule, struct sk_buff *skb,
195 struct fib_rule_hdr *frh,
196 struct nlattr **tb)
197{
198 int err = -EINVAL;
199 struct net *net = sock_net(skb->sk);
200 struct fib6_rule *rule6 = (struct fib6_rule *) rule;
201
202 if (rule->action == FR_ACT_TO_TBL) {
203 if (rule->table == RT6_TABLE_UNSPEC)
204 goto errout;
205
206 if (fib6_new_table(net, rule->table) == NULL) {
207 err = -ENOBUFS;
208 goto errout;
209 }
210 }
211
212 if (frh->src_len)
213 rule6->src.addr = nla_get_in6_addr(tb[FRA_SRC]);
214
215 if (frh->dst_len)
216 rule6->dst.addr = nla_get_in6_addr(tb[FRA_DST]);
217
218 rule6->src.plen = frh->src_len;
219 rule6->dst.plen = frh->dst_len;
220 rule6->tclass = frh->tos;
221
222 err = 0;
223errout:
224 return err;
225}
226
227static int fib6_rule_compare(struct fib_rule *rule, struct fib_rule_hdr *frh,
228 struct nlattr **tb)
229{
230 struct fib6_rule *rule6 = (struct fib6_rule *) rule;
231
232 if (frh->src_len && (rule6->src.plen != frh->src_len))
233 return 0;
234
235 if (frh->dst_len && (rule6->dst.plen != frh->dst_len))
236 return 0;
237
238 if (frh->tos && (rule6->tclass != frh->tos))
239 return 0;
240
241 if (frh->src_len &&
242 nla_memcmp(tb[FRA_SRC], &rule6->src.addr, sizeof(struct in6_addr)))
243 return 0;
244
245 if (frh->dst_len &&
246 nla_memcmp(tb[FRA_DST], &rule6->dst.addr, sizeof(struct in6_addr)))
247 return 0;
248
249 return 1;
250}
251
252static int fib6_rule_fill(struct fib_rule *rule, struct sk_buff *skb,
253 struct fib_rule_hdr *frh)
254{
255 struct fib6_rule *rule6 = (struct fib6_rule *) rule;
256
257 frh->dst_len = rule6->dst.plen;
258 frh->src_len = rule6->src.plen;
259 frh->tos = rule6->tclass;
260
261 if ((rule6->dst.plen &&
262 nla_put_in6_addr(skb, FRA_DST, &rule6->dst.addr)) ||
263 (rule6->src.plen &&
264 nla_put_in6_addr(skb, FRA_SRC, &rule6->src.addr)))
265 goto nla_put_failure;
266 return 0;
267
268nla_put_failure:
269 return -ENOBUFS;
270}
271
272static size_t fib6_rule_nlmsg_payload(struct fib_rule *rule)
273{
274 return nla_total_size(16) /* dst */
275 + nla_total_size(16); /* src */
276}
277
278static const struct fib_rules_ops __net_initconst fib6_rules_ops_template = {
279 .family = AF_INET6,
280 .rule_size = sizeof(struct fib6_rule),
281 .addr_size = sizeof(struct in6_addr),
282 .action = fib6_rule_action,
283 .match = fib6_rule_match,
284 .suppress = fib6_rule_suppress,
285 .configure = fib6_rule_configure,
286 .compare = fib6_rule_compare,
287 .fill = fib6_rule_fill,
288 .nlmsg_payload = fib6_rule_nlmsg_payload,
289 .nlgroup = RTNLGRP_IPV6_RULE,
290 .policy = fib6_rule_policy,
291 .owner = THIS_MODULE,
292 .fro_net = &init_net,
293};
294
295static int __net_init fib6_rules_net_init(struct net *net)
296{
297 struct fib_rules_ops *ops;
298 int err = -ENOMEM;
299
300 ops = fib_rules_register(&fib6_rules_ops_template, net);
301 if (IS_ERR(ops))
302 return PTR_ERR(ops);
303
304 err = fib_default_rule_add(ops, 0, RT6_TABLE_LOCAL, 0);
305 if (err)
306 goto out_fib6_rules_ops;
307
308 err = fib_default_rule_add(ops, 0x7FFE, RT6_TABLE_MAIN, 0);
309 if (err)
310 goto out_fib6_rules_ops;
311
312 net->ipv6.fib6_rules_ops = ops;
313out:
314 return err;
315
316out_fib6_rules_ops:
317 fib_rules_unregister(ops);
318 goto out;
319}
320
321static void __net_exit fib6_rules_net_exit(struct net *net)
322{
323 rtnl_lock();
324 fib_rules_unregister(net->ipv6.fib6_rules_ops);
325 rtnl_unlock();
326}
327
328static struct pernet_operations fib6_rules_net_ops = {
329 .init = fib6_rules_net_init,
330 .exit = fib6_rules_net_exit,
331};
332
333int __init fib6_rules_init(void)
334{
335 return register_pernet_subsys(&fib6_rules_net_ops);
336}
337
338
339void fib6_rules_cleanup(void)
340{
341 unregister_pernet_subsys(&fib6_rules_net_ops);
342}
1/*
2 * net/ipv6/fib6_rules.c IPv6 Routing Policy Rules
3 *
4 * Copyright (C)2003-2006 Helsinki University of Technology
5 * Copyright (C)2003-2006 USAGI/WIDE Project
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation, version 2.
10 *
11 * Authors
12 * Thomas Graf <tgraf@suug.ch>
13 * Ville Nuorvala <vnuorval@tcs.hut.fi>
14 */
15
16#include <linux/netdevice.h>
17#include <linux/notifier.h>
18#include <linux/export.h>
19
20#include <net/fib_rules.h>
21#include <net/ipv6.h>
22#include <net/addrconf.h>
23#include <net/ip6_route.h>
24#include <net/netlink.h>
25
26struct fib6_rule {
27 struct fib_rule common;
28 struct rt6key src;
29 struct rt6key dst;
30 u8 tclass;
31};
32
33static bool fib6_rule_matchall(const struct fib_rule *rule)
34{
35 struct fib6_rule *r = container_of(rule, struct fib6_rule, common);
36
37 if (r->dst.plen || r->src.plen || r->tclass)
38 return false;
39 return fib_rule_matchall(rule);
40}
41
42bool fib6_rule_default(const struct fib_rule *rule)
43{
44 if (!fib6_rule_matchall(rule) || rule->action != FR_ACT_TO_TBL ||
45 rule->l3mdev)
46 return false;
47 if (rule->table != RT6_TABLE_LOCAL && rule->table != RT6_TABLE_MAIN)
48 return false;
49 return true;
50}
51EXPORT_SYMBOL_GPL(fib6_rule_default);
52
53int fib6_rules_dump(struct net *net, struct notifier_block *nb)
54{
55 return fib_rules_dump(net, nb, AF_INET6);
56}
57
58unsigned int fib6_rules_seq_read(struct net *net)
59{
60 return fib_rules_seq_read(net, AF_INET6);
61}
62
63struct dst_entry *fib6_rule_lookup(struct net *net, struct flowi6 *fl6,
64 const struct sk_buff *skb,
65 int flags, pol_lookup_t lookup)
66{
67 if (net->ipv6.fib6_has_custom_rules) {
68 struct fib_lookup_arg arg = {
69 .lookup_ptr = lookup,
70 .lookup_data = skb,
71 .flags = FIB_LOOKUP_NOREF,
72 };
73
74 /* update flow if oif or iif point to device enslaved to l3mdev */
75 l3mdev_update_flow(net, flowi6_to_flowi(fl6));
76
77 fib_rules_lookup(net->ipv6.fib6_rules_ops,
78 flowi6_to_flowi(fl6), flags, &arg);
79
80 if (arg.result)
81 return arg.result;
82 } else {
83 struct rt6_info *rt;
84
85 rt = lookup(net, net->ipv6.fib6_local_tbl, fl6, skb, flags);
86 if (rt != net->ipv6.ip6_null_entry && rt->dst.error != -EAGAIN)
87 return &rt->dst;
88 ip6_rt_put(rt);
89 rt = lookup(net, net->ipv6.fib6_main_tbl, fl6, skb, flags);
90 if (rt->dst.error != -EAGAIN)
91 return &rt->dst;
92 ip6_rt_put(rt);
93 }
94
95 dst_hold(&net->ipv6.ip6_null_entry->dst);
96 return &net->ipv6.ip6_null_entry->dst;
97}
98
99static int fib6_rule_action(struct fib_rule *rule, struct flowi *flp,
100 int flags, struct fib_lookup_arg *arg)
101{
102 struct flowi6 *flp6 = &flp->u.ip6;
103 struct rt6_info *rt = NULL;
104 struct fib6_table *table;
105 struct net *net = rule->fr_net;
106 pol_lookup_t lookup = arg->lookup_ptr;
107 int err = 0;
108 u32 tb_id;
109
110 switch (rule->action) {
111 case FR_ACT_TO_TBL:
112 break;
113 case FR_ACT_UNREACHABLE:
114 err = -ENETUNREACH;
115 rt = net->ipv6.ip6_null_entry;
116 goto discard_pkt;
117 default:
118 case FR_ACT_BLACKHOLE:
119 err = -EINVAL;
120 rt = net->ipv6.ip6_blk_hole_entry;
121 goto discard_pkt;
122 case FR_ACT_PROHIBIT:
123 err = -EACCES;
124 rt = net->ipv6.ip6_prohibit_entry;
125 goto discard_pkt;
126 }
127
128 tb_id = fib_rule_get_table(rule, arg);
129 table = fib6_get_table(net, tb_id);
130 if (!table) {
131 err = -EAGAIN;
132 goto out;
133 }
134
135 rt = lookup(net, table, flp6, arg->lookup_data, flags);
136 if (rt != net->ipv6.ip6_null_entry) {
137 struct fib6_rule *r = (struct fib6_rule *)rule;
138
139 /*
140 * If we need to find a source address for this traffic,
141 * we check the result if it meets requirement of the rule.
142 */
143 if ((rule->flags & FIB_RULE_FIND_SADDR) &&
144 r->src.plen && !(flags & RT6_LOOKUP_F_HAS_SADDR)) {
145 struct in6_addr saddr;
146
147 if (ipv6_dev_get_saddr(net,
148 ip6_dst_idev(&rt->dst)->dev,
149 &flp6->daddr,
150 rt6_flags2srcprefs(flags),
151 &saddr))
152 goto again;
153 if (!ipv6_prefix_equal(&saddr, &r->src.addr,
154 r->src.plen))
155 goto again;
156 flp6->saddr = saddr;
157 }
158 err = rt->dst.error;
159 if (err != -EAGAIN)
160 goto out;
161 }
162again:
163 ip6_rt_put(rt);
164 err = -EAGAIN;
165 rt = NULL;
166 goto out;
167
168discard_pkt:
169 dst_hold(&rt->dst);
170out:
171 arg->result = rt;
172 return err;
173}
174
175static bool fib6_rule_suppress(struct fib_rule *rule, struct fib_lookup_arg *arg)
176{
177 struct rt6_info *rt = (struct rt6_info *) arg->result;
178 struct net_device *dev = NULL;
179
180 if (rt->rt6i_idev)
181 dev = rt->rt6i_idev->dev;
182
183 /* do not accept result if the route does
184 * not meet the required prefix length
185 */
186 if (rt->rt6i_dst.plen <= rule->suppress_prefixlen)
187 goto suppress_route;
188
189 /* do not accept result if the route uses a device
190 * belonging to a forbidden interface group
191 */
192 if (rule->suppress_ifgroup != -1 && dev && dev->group == rule->suppress_ifgroup)
193 goto suppress_route;
194
195 return false;
196
197suppress_route:
198 ip6_rt_put(rt);
199 return true;
200}
201
202static int fib6_rule_match(struct fib_rule *rule, struct flowi *fl, int flags)
203{
204 struct fib6_rule *r = (struct fib6_rule *) rule;
205 struct flowi6 *fl6 = &fl->u.ip6;
206
207 if (r->dst.plen &&
208 !ipv6_prefix_equal(&fl6->daddr, &r->dst.addr, r->dst.plen))
209 return 0;
210
211 /*
212 * If FIB_RULE_FIND_SADDR is set and we do not have a
213 * source address for the traffic, we defer check for
214 * source address.
215 */
216 if (r->src.plen) {
217 if (flags & RT6_LOOKUP_F_HAS_SADDR) {
218 if (!ipv6_prefix_equal(&fl6->saddr, &r->src.addr,
219 r->src.plen))
220 return 0;
221 } else if (!(r->common.flags & FIB_RULE_FIND_SADDR))
222 return 0;
223 }
224
225 if (r->tclass && r->tclass != ip6_tclass(fl6->flowlabel))
226 return 0;
227
228 if (rule->ip_proto && (rule->ip_proto != fl6->flowi6_proto))
229 return 0;
230
231 if (fib_rule_port_range_set(&rule->sport_range) &&
232 !fib_rule_port_inrange(&rule->sport_range, fl6->fl6_sport))
233 return 0;
234
235 if (fib_rule_port_range_set(&rule->dport_range) &&
236 !fib_rule_port_inrange(&rule->dport_range, fl6->fl6_dport))
237 return 0;
238
239 return 1;
240}
241
242static const struct nla_policy fib6_rule_policy[FRA_MAX+1] = {
243 FRA_GENERIC_POLICY,
244};
245
246static int fib6_rule_configure(struct fib_rule *rule, struct sk_buff *skb,
247 struct fib_rule_hdr *frh,
248 struct nlattr **tb)
249{
250 int err = -EINVAL;
251 struct net *net = sock_net(skb->sk);
252 struct fib6_rule *rule6 = (struct fib6_rule *) rule;
253
254 if (rule->action == FR_ACT_TO_TBL && !rule->l3mdev) {
255 if (rule->table == RT6_TABLE_UNSPEC)
256 goto errout;
257
258 if (fib6_new_table(net, rule->table) == NULL) {
259 err = -ENOBUFS;
260 goto errout;
261 }
262 }
263
264 if (frh->src_len)
265 rule6->src.addr = nla_get_in6_addr(tb[FRA_SRC]);
266
267 if (frh->dst_len)
268 rule6->dst.addr = nla_get_in6_addr(tb[FRA_DST]);
269
270 rule6->src.plen = frh->src_len;
271 rule6->dst.plen = frh->dst_len;
272 rule6->tclass = frh->tos;
273
274 if (fib_rule_requires_fldissect(rule))
275 net->ipv6.fib6_rules_require_fldissect++;
276
277 net->ipv6.fib6_has_custom_rules = true;
278 err = 0;
279errout:
280 return err;
281}
282
283static int fib6_rule_delete(struct fib_rule *rule)
284{
285 struct net *net = rule->fr_net;
286
287 if (net->ipv6.fib6_rules_require_fldissect &&
288 fib_rule_requires_fldissect(rule))
289 net->ipv6.fib6_rules_require_fldissect--;
290
291 return 0;
292}
293
294static int fib6_rule_compare(struct fib_rule *rule, struct fib_rule_hdr *frh,
295 struct nlattr **tb)
296{
297 struct fib6_rule *rule6 = (struct fib6_rule *) rule;
298
299 if (frh->src_len && (rule6->src.plen != frh->src_len))
300 return 0;
301
302 if (frh->dst_len && (rule6->dst.plen != frh->dst_len))
303 return 0;
304
305 if (frh->tos && (rule6->tclass != frh->tos))
306 return 0;
307
308 if (frh->src_len &&
309 nla_memcmp(tb[FRA_SRC], &rule6->src.addr, sizeof(struct in6_addr)))
310 return 0;
311
312 if (frh->dst_len &&
313 nla_memcmp(tb[FRA_DST], &rule6->dst.addr, sizeof(struct in6_addr)))
314 return 0;
315
316 return 1;
317}
318
319static int fib6_rule_fill(struct fib_rule *rule, struct sk_buff *skb,
320 struct fib_rule_hdr *frh)
321{
322 struct fib6_rule *rule6 = (struct fib6_rule *) rule;
323
324 frh->dst_len = rule6->dst.plen;
325 frh->src_len = rule6->src.plen;
326 frh->tos = rule6->tclass;
327
328 if ((rule6->dst.plen &&
329 nla_put_in6_addr(skb, FRA_DST, &rule6->dst.addr)) ||
330 (rule6->src.plen &&
331 nla_put_in6_addr(skb, FRA_SRC, &rule6->src.addr)))
332 goto nla_put_failure;
333 return 0;
334
335nla_put_failure:
336 return -ENOBUFS;
337}
338
339static size_t fib6_rule_nlmsg_payload(struct fib_rule *rule)
340{
341 return nla_total_size(16) /* dst */
342 + nla_total_size(16); /* src */
343}
344
345static const struct fib_rules_ops __net_initconst fib6_rules_ops_template = {
346 .family = AF_INET6,
347 .rule_size = sizeof(struct fib6_rule),
348 .addr_size = sizeof(struct in6_addr),
349 .action = fib6_rule_action,
350 .match = fib6_rule_match,
351 .suppress = fib6_rule_suppress,
352 .configure = fib6_rule_configure,
353 .delete = fib6_rule_delete,
354 .compare = fib6_rule_compare,
355 .fill = fib6_rule_fill,
356 .nlmsg_payload = fib6_rule_nlmsg_payload,
357 .nlgroup = RTNLGRP_IPV6_RULE,
358 .policy = fib6_rule_policy,
359 .owner = THIS_MODULE,
360 .fro_net = &init_net,
361};
362
363static int __net_init fib6_rules_net_init(struct net *net)
364{
365 struct fib_rules_ops *ops;
366 int err = -ENOMEM;
367
368 ops = fib_rules_register(&fib6_rules_ops_template, net);
369 if (IS_ERR(ops))
370 return PTR_ERR(ops);
371
372 err = fib_default_rule_add(ops, 0, RT6_TABLE_LOCAL, 0);
373 if (err)
374 goto out_fib6_rules_ops;
375
376 err = fib_default_rule_add(ops, 0x7FFE, RT6_TABLE_MAIN, 0);
377 if (err)
378 goto out_fib6_rules_ops;
379
380 net->ipv6.fib6_rules_ops = ops;
381 net->ipv6.fib6_rules_require_fldissect = 0;
382out:
383 return err;
384
385out_fib6_rules_ops:
386 fib_rules_unregister(ops);
387 goto out;
388}
389
390static void __net_exit fib6_rules_net_exit(struct net *net)
391{
392 rtnl_lock();
393 fib_rules_unregister(net->ipv6.fib6_rules_ops);
394 rtnl_unlock();
395}
396
397static struct pernet_operations fib6_rules_net_ops = {
398 .init = fib6_rules_net_init,
399 .exit = fib6_rules_net_exit,
400};
401
402int __init fib6_rules_init(void)
403{
404 return register_pernet_subsys(&fib6_rules_net_ops);
405}
406
407
408void fib6_rules_cleanup(void)
409{
410 unregister_pernet_subsys(&fib6_rules_net_ops);
411}