Commit | Line | Data |
---|---|---|
2a8cc6c8 YH |
1 | /* |
2 | * IPv6 Address Label subsystem | |
3 | * for the IPv6 "Default" Source Address Selection | |
4 | * | |
5 | * Copyright (C)2007 USAGI/WIDE Project | |
6 | */ | |
7 | /* | |
8 | * Author: | |
9 | * YOSHIFUJI Hideaki @ USAGI/WIDE Project <yoshfuji@linux-ipv6.org> | |
10 | */ | |
11 | ||
12 | #include <linux/kernel.h> | |
13 | #include <linux/list.h> | |
14 | #include <linux/rcupdate.h> | |
15 | #include <linux/in6.h> | |
16 | #include <net/addrconf.h> | |
17 | #include <linux/if_addrlabel.h> | |
18 | #include <linux/netlink.h> | |
19 | #include <linux/rtnetlink.h> | |
20 | ||
21 | #if 0 | |
22 | #define ADDRLABEL(x...) printk(x) | |
23 | #else | |
24 | #define ADDRLABEL(x...) do { ; } while(0) | |
25 | #endif | |
26 | ||
27 | /* | |
28 | * Policy Table | |
29 | */ | |
30 | struct ip6addrlbl_entry | |
31 | { | |
32 | struct in6_addr prefix; | |
33 | int prefixlen; | |
34 | int ifindex; | |
35 | int addrtype; | |
36 | u32 label; | |
37 | struct hlist_node list; | |
38 | atomic_t refcnt; | |
39 | struct rcu_head rcu; | |
40 | }; | |
41 | ||
42 | static struct ip6addrlbl_table | |
43 | { | |
44 | struct hlist_head head; | |
45 | spinlock_t lock; | |
46 | u32 seq; | |
47 | } ip6addrlbl_table; | |
48 | ||
49 | /* | |
50 | * Default policy table (RFC3484 + extensions) | |
51 | * | |
52 | * prefix addr_type label | |
53 | * ------------------------------------------------------------------------- | |
54 | * ::1/128 LOOPBACK 0 | |
55 | * ::/0 N/A 1 | |
56 | * 2002::/16 N/A 2 | |
57 | * ::/96 COMPATv4 3 | |
58 | * ::ffff:0:0/96 V4MAPPED 4 | |
59 | * fc00::/7 N/A 5 ULA (RFC 4193) | |
60 | * 2001::/32 N/A 6 Teredo (RFC 4380) | |
5fe47b8a | 61 | * 2001:10::/28 N/A 7 ORCHID (RFC 4843) |
2a8cc6c8 YH |
62 | * |
63 | * Note: 0xffffffff is used if we do not have any policies. | |
64 | */ | |
65 | ||
66 | #define IPV6_ADDR_LABEL_DEFAULT 0xffffffffUL | |
67 | ||
68 | static const __initdata struct ip6addrlbl_init_table | |
69 | { | |
70 | const struct in6_addr *prefix; | |
71 | int prefixlen; | |
72 | u32 label; | |
73 | } ip6addrlbl_init_table[] = { | |
74 | { /* ::/0 */ | |
75 | .prefix = &in6addr_any, | |
76 | .label = 1, | |
77 | },{ /* fc00::/7 */ | |
78 | .prefix = &(struct in6_addr){{{ 0xfc }}}, | |
79 | .prefixlen = 7, | |
80 | .label = 5, | |
81 | },{ /* 2002::/16 */ | |
82 | .prefix = &(struct in6_addr){{{ 0x20, 0x02 }}}, | |
83 | .prefixlen = 16, | |
84 | .label = 2, | |
85 | },{ /* 2001::/32 */ | |
86 | .prefix = &(struct in6_addr){{{ 0x20, 0x01 }}}, | |
87 | .prefixlen = 32, | |
88 | .label = 6, | |
5fe47b8a JMT |
89 | },{ /* 2001:10::/28 */ |
90 | .prefix = &(struct in6_addr){{{ 0x20, 0x01, 0x00, 0x10 }}}, | |
91 | .prefixlen = 28, | |
92 | .label = 7, | |
2a8cc6c8 YH |
93 | },{ /* ::ffff:0:0 */ |
94 | .prefix = &(struct in6_addr){{{ [10] = 0xff, [11] = 0xff }}}, | |
95 | .prefixlen = 96, | |
96 | .label = 4, | |
97 | },{ /* ::/96 */ | |
98 | .prefix = &in6addr_any, | |
99 | .prefixlen = 96, | |
100 | .label = 3, | |
101 | },{ /* ::1/128 */ | |
102 | .prefix = &in6addr_loopback, | |
103 | .prefixlen = 128, | |
104 | .label = 0, | |
105 | } | |
106 | }; | |
107 | ||
108 | /* Object management */ | |
109 | static inline void ip6addrlbl_free(struct ip6addrlbl_entry *p) | |
110 | { | |
111 | kfree(p); | |
112 | } | |
113 | ||
85040bcb YH |
114 | static void ip6addrlbl_free_rcu(struct rcu_head *h) |
115 | { | |
116 | ip6addrlbl_free(container_of(h, struct ip6addrlbl_entry, rcu)); | |
117 | } | |
118 | ||
2a8cc6c8 YH |
119 | static inline int ip6addrlbl_hold(struct ip6addrlbl_entry *p) |
120 | { | |
121 | return atomic_inc_not_zero(&p->refcnt); | |
122 | } | |
123 | ||
124 | static inline void ip6addrlbl_put(struct ip6addrlbl_entry *p) | |
125 | { | |
126 | if (atomic_dec_and_test(&p->refcnt)) | |
85040bcb | 127 | call_rcu(&p->rcu, ip6addrlbl_free_rcu); |
2a8cc6c8 YH |
128 | } |
129 | ||
130 | /* Find label */ | |
131 | static int __ip6addrlbl_match(struct ip6addrlbl_entry *p, | |
132 | const struct in6_addr *addr, | |
133 | int addrtype, int ifindex) | |
134 | { | |
135 | if (p->ifindex && p->ifindex != ifindex) | |
136 | return 0; | |
137 | if (p->addrtype && p->addrtype != addrtype) | |
138 | return 0; | |
139 | if (!ipv6_prefix_equal(addr, &p->prefix, p->prefixlen)) | |
140 | return 0; | |
141 | return 1; | |
142 | } | |
143 | ||
144 | static struct ip6addrlbl_entry *__ipv6_addr_label(const struct in6_addr *addr, | |
145 | int type, int ifindex) | |
146 | { | |
147 | struct hlist_node *pos; | |
148 | struct ip6addrlbl_entry *p; | |
149 | hlist_for_each_entry_rcu(p, pos, &ip6addrlbl_table.head, list) { | |
150 | if (__ip6addrlbl_match(p, addr, type, ifindex)) | |
151 | return p; | |
152 | } | |
153 | return NULL; | |
154 | } | |
155 | ||
156 | u32 ipv6_addr_label(const struct in6_addr *addr, int type, int ifindex) | |
157 | { | |
158 | u32 label; | |
159 | struct ip6addrlbl_entry *p; | |
160 | ||
161 | type &= IPV6_ADDR_MAPPED | IPV6_ADDR_COMPATv4 | IPV6_ADDR_LOOPBACK; | |
162 | ||
163 | rcu_read_lock(); | |
164 | p = __ipv6_addr_label(addr, type, ifindex); | |
165 | label = p ? p->label : IPV6_ADDR_LABEL_DEFAULT; | |
166 | rcu_read_unlock(); | |
167 | ||
168 | ADDRLABEL(KERN_DEBUG "%s(addr=" NIP6_FMT ", type=%d, ifindex=%d) => %08x\n", | |
169 | __FUNCTION__, | |
170 | NIP6(*addr), type, ifindex, | |
171 | label); | |
172 | ||
173 | return label; | |
174 | } | |
175 | ||
176 | /* allocate one entry */ | |
40fee36e YH |
177 | static struct ip6addrlbl_entry *ip6addrlbl_alloc(const struct in6_addr *prefix, |
178 | int prefixlen, int ifindex, | |
179 | u32 label) | |
2a8cc6c8 YH |
180 | { |
181 | struct ip6addrlbl_entry *newp; | |
182 | int addrtype; | |
183 | ||
184 | ADDRLABEL(KERN_DEBUG "%s(prefix=" NIP6_FMT ", prefixlen=%d, ifindex=%d, label=%u)\n", | |
185 | __FUNCTION__, | |
186 | NIP6(*prefix), prefixlen, | |
187 | ifindex, | |
188 | (unsigned int)label); | |
189 | ||
190 | addrtype = ipv6_addr_type(prefix) & (IPV6_ADDR_MAPPED | IPV6_ADDR_COMPATv4 | IPV6_ADDR_LOOPBACK); | |
191 | ||
192 | switch (addrtype) { | |
193 | case IPV6_ADDR_MAPPED: | |
194 | if (prefixlen > 96) | |
195 | return ERR_PTR(-EINVAL); | |
196 | if (prefixlen < 96) | |
197 | addrtype = 0; | |
198 | break; | |
199 | case IPV6_ADDR_COMPATv4: | |
200 | if (prefixlen != 96) | |
201 | addrtype = 0; | |
202 | break; | |
203 | case IPV6_ADDR_LOOPBACK: | |
204 | if (prefixlen != 128) | |
205 | addrtype = 0; | |
206 | break; | |
207 | } | |
208 | ||
209 | newp = kmalloc(sizeof(*newp), GFP_KERNEL); | |
210 | if (!newp) | |
211 | return ERR_PTR(-ENOMEM); | |
212 | ||
213 | ipv6_addr_prefix(&newp->prefix, prefix, prefixlen); | |
214 | newp->prefixlen = prefixlen; | |
215 | newp->ifindex = ifindex; | |
216 | newp->addrtype = addrtype; | |
217 | newp->label = label; | |
218 | INIT_HLIST_NODE(&newp->list); | |
219 | atomic_set(&newp->refcnt, 1); | |
220 | return newp; | |
221 | } | |
222 | ||
223 | /* add a label */ | |
40fee36e | 224 | static int __ip6addrlbl_add(struct ip6addrlbl_entry *newp, int replace) |
2a8cc6c8 YH |
225 | { |
226 | int ret = 0; | |
227 | ||
228 | ADDRLABEL(KERN_DEBUG "%s(newp=%p, replace=%d)\n", | |
229 | __FUNCTION__, | |
230 | newp, replace); | |
231 | ||
232 | if (hlist_empty(&ip6addrlbl_table.head)) { | |
233 | hlist_add_head_rcu(&newp->list, &ip6addrlbl_table.head); | |
234 | } else { | |
235 | struct hlist_node *pos, *n; | |
236 | struct ip6addrlbl_entry *p = NULL; | |
237 | hlist_for_each_entry_safe(p, pos, n, | |
238 | &ip6addrlbl_table.head, list) { | |
239 | if (p->prefixlen == newp->prefixlen && | |
240 | p->ifindex == newp->ifindex && | |
241 | ipv6_addr_equal(&p->prefix, &newp->prefix)) { | |
242 | if (!replace) { | |
243 | ret = -EEXIST; | |
244 | goto out; | |
245 | } | |
246 | hlist_replace_rcu(&p->list, &newp->list); | |
247 | ip6addrlbl_put(p); | |
2a8cc6c8 YH |
248 | goto out; |
249 | } else if ((p->prefixlen == newp->prefixlen && !p->ifindex) || | |
250 | (p->prefixlen < newp->prefixlen)) { | |
251 | hlist_add_before_rcu(&newp->list, &p->list); | |
252 | goto out; | |
253 | } | |
254 | } | |
255 | hlist_add_after_rcu(&p->list, &newp->list); | |
256 | } | |
257 | out: | |
258 | if (!ret) | |
259 | ip6addrlbl_table.seq++; | |
260 | return ret; | |
261 | } | |
262 | ||
263 | /* add a label */ | |
40fee36e YH |
264 | static int ip6addrlbl_add(const struct in6_addr *prefix, int prefixlen, |
265 | int ifindex, u32 label, int replace) | |
2a8cc6c8 YH |
266 | { |
267 | struct ip6addrlbl_entry *newp; | |
268 | int ret = 0; | |
269 | ||
270 | ADDRLABEL(KERN_DEBUG "%s(prefix=" NIP6_FMT ", prefixlen=%d, ifindex=%d, label=%u, replace=%d)\n", | |
271 | __FUNCTION__, | |
272 | NIP6(*prefix), prefixlen, | |
273 | ifindex, | |
274 | (unsigned int)label, | |
275 | replace); | |
276 | ||
277 | newp = ip6addrlbl_alloc(prefix, prefixlen, ifindex, label); | |
278 | if (IS_ERR(newp)) | |
279 | return PTR_ERR(newp); | |
280 | spin_lock(&ip6addrlbl_table.lock); | |
281 | ret = __ip6addrlbl_add(newp, replace); | |
282 | spin_unlock(&ip6addrlbl_table.lock); | |
283 | if (ret) | |
284 | ip6addrlbl_free(newp); | |
285 | return ret; | |
286 | } | |
287 | ||
288 | /* remove a label */ | |
40fee36e YH |
289 | static int __ip6addrlbl_del(const struct in6_addr *prefix, int prefixlen, |
290 | int ifindex) | |
2a8cc6c8 YH |
291 | { |
292 | struct ip6addrlbl_entry *p = NULL; | |
293 | struct hlist_node *pos, *n; | |
294 | int ret = -ESRCH; | |
295 | ||
296 | ADDRLABEL(KERN_DEBUG "%s(prefix=" NIP6_FMT ", prefixlen=%d, ifindex=%d)\n", | |
297 | __FUNCTION__, | |
298 | NIP6(*prefix), prefixlen, | |
299 | ifindex); | |
300 | ||
301 | hlist_for_each_entry_safe(p, pos, n, &ip6addrlbl_table.head, list) { | |
302 | if (p->prefixlen == prefixlen && | |
303 | p->ifindex == ifindex && | |
304 | ipv6_addr_equal(&p->prefix, prefix)) { | |
305 | hlist_del_rcu(&p->list); | |
306 | ip6addrlbl_put(p); | |
2a8cc6c8 YH |
307 | ret = 0; |
308 | break; | |
309 | } | |
310 | } | |
311 | return ret; | |
312 | } | |
313 | ||
40fee36e YH |
314 | static int ip6addrlbl_del(const struct in6_addr *prefix, int prefixlen, |
315 | int ifindex) | |
2a8cc6c8 YH |
316 | { |
317 | struct in6_addr prefix_buf; | |
318 | int ret; | |
319 | ||
320 | ADDRLABEL(KERN_DEBUG "%s(prefix=" NIP6_FMT ", prefixlen=%d, ifindex=%d)\n", | |
321 | __FUNCTION__, | |
322 | NIP6(*prefix), prefixlen, | |
323 | ifindex); | |
324 | ||
325 | ipv6_addr_prefix(&prefix_buf, prefix, prefixlen); | |
326 | spin_lock(&ip6addrlbl_table.lock); | |
327 | ret = __ip6addrlbl_del(&prefix_buf, prefixlen, ifindex); | |
328 | spin_unlock(&ip6addrlbl_table.lock); | |
329 | return ret; | |
330 | } | |
331 | ||
332 | /* add default label */ | |
333 | static __init int ip6addrlbl_init(void) | |
334 | { | |
335 | int err = 0; | |
336 | int i; | |
337 | ||
338 | ADDRLABEL(KERN_DEBUG "%s()\n", __FUNCTION__); | |
339 | ||
340 | for (i = 0; i < ARRAY_SIZE(ip6addrlbl_init_table); i++) { | |
341 | int ret = ip6addrlbl_add(ip6addrlbl_init_table[i].prefix, | |
342 | ip6addrlbl_init_table[i].prefixlen, | |
343 | 0, | |
344 | ip6addrlbl_init_table[i].label, 0); | |
345 | /* XXX: should we free all rules when we catch an error? */ | |
346 | if (ret && (!err || err != -ENOMEM)) | |
347 | err = ret; | |
348 | } | |
349 | return err; | |
350 | } | |
351 | ||
352 | int __init ipv6_addr_label_init(void) | |
353 | { | |
354 | spin_lock_init(&ip6addrlbl_table.lock); | |
355 | ||
356 | return ip6addrlbl_init(); | |
357 | } | |
358 | ||
359 | static const struct nla_policy ifal_policy[IFAL_MAX+1] = { | |
360 | [IFAL_ADDRESS] = { .len = sizeof(struct in6_addr), }, | |
361 | [IFAL_LABEL] = { .len = sizeof(u32), }, | |
362 | }; | |
363 | ||
364 | static int ip6addrlbl_newdel(struct sk_buff *skb, struct nlmsghdr *nlh, | |
365 | void *arg) | |
366 | { | |
b854272b | 367 | struct net *net = skb->sk->sk_net; |
2a8cc6c8 YH |
368 | struct ifaddrlblmsg *ifal; |
369 | struct nlattr *tb[IFAL_MAX+1]; | |
370 | struct in6_addr *pfx; | |
371 | u32 label; | |
372 | int err = 0; | |
373 | ||
b854272b DL |
374 | if (net != &init_net) |
375 | return 0; | |
376 | ||
2a8cc6c8 YH |
377 | err = nlmsg_parse(nlh, sizeof(*ifal), tb, IFAL_MAX, ifal_policy); |
378 | if (err < 0) | |
379 | return err; | |
380 | ||
381 | ifal = nlmsg_data(nlh); | |
382 | ||
383 | if (ifal->ifal_family != AF_INET6 || | |
384 | ifal->ifal_prefixlen > 128) | |
385 | return -EINVAL; | |
386 | ||
387 | if (ifal->ifal_index && | |
388 | !__dev_get_by_index(&init_net, ifal->ifal_index)) | |
389 | return -EINVAL; | |
390 | ||
391 | if (!tb[IFAL_ADDRESS]) | |
392 | return -EINVAL; | |
393 | ||
394 | pfx = nla_data(tb[IFAL_ADDRESS]); | |
395 | if (!pfx) | |
396 | return -EINVAL; | |
397 | ||
398 | if (!tb[IFAL_LABEL]) | |
399 | return -EINVAL; | |
400 | label = nla_get_u32(tb[IFAL_LABEL]); | |
401 | if (label == IPV6_ADDR_LABEL_DEFAULT) | |
402 | return -EINVAL; | |
403 | ||
404 | switch(nlh->nlmsg_type) { | |
405 | case RTM_NEWADDRLABEL: | |
406 | err = ip6addrlbl_add(pfx, ifal->ifal_prefixlen, | |
407 | ifal->ifal_index, label, | |
408 | nlh->nlmsg_flags & NLM_F_REPLACE); | |
409 | break; | |
410 | case RTM_DELADDRLABEL: | |
411 | err = ip6addrlbl_del(pfx, ifal->ifal_prefixlen, | |
412 | ifal->ifal_index); | |
413 | break; | |
414 | default: | |
415 | err = -EOPNOTSUPP; | |
416 | } | |
417 | return err; | |
418 | } | |
419 | ||
420 | static inline void ip6addrlbl_putmsg(struct nlmsghdr *nlh, | |
421 | int prefixlen, int ifindex, u32 lseq) | |
422 | { | |
423 | struct ifaddrlblmsg *ifal = nlmsg_data(nlh); | |
424 | ifal->ifal_family = AF_INET6; | |
425 | ifal->ifal_prefixlen = prefixlen; | |
426 | ifal->ifal_flags = 0; | |
427 | ifal->ifal_index = ifindex; | |
428 | ifal->ifal_seq = lseq; | |
429 | }; | |
430 | ||
431 | static int ip6addrlbl_fill(struct sk_buff *skb, | |
432 | struct ip6addrlbl_entry *p, | |
433 | u32 lseq, | |
434 | u32 pid, u32 seq, int event, | |
435 | unsigned int flags) | |
436 | { | |
437 | struct nlmsghdr *nlh = nlmsg_put(skb, pid, seq, event, | |
438 | sizeof(struct ifaddrlblmsg), flags); | |
439 | if (!nlh) | |
440 | return -EMSGSIZE; | |
441 | ||
442 | ip6addrlbl_putmsg(nlh, p->prefixlen, p->ifindex, lseq); | |
443 | ||
444 | if (nla_put(skb, IFAL_ADDRESS, 16, &p->prefix) < 0 || | |
445 | nla_put_u32(skb, IFAL_LABEL, p->label) < 0) { | |
446 | nlmsg_cancel(skb, nlh); | |
447 | return -EMSGSIZE; | |
448 | } | |
449 | ||
450 | return nlmsg_end(skb, nlh); | |
451 | } | |
452 | ||
453 | static int ip6addrlbl_dump(struct sk_buff *skb, struct netlink_callback *cb) | |
454 | { | |
b854272b | 455 | struct net *net = skb->sk->sk_net; |
2a8cc6c8 YH |
456 | struct ip6addrlbl_entry *p; |
457 | struct hlist_node *pos; | |
458 | int idx = 0, s_idx = cb->args[0]; | |
459 | int err; | |
460 | ||
b854272b DL |
461 | if (net != &init_net) |
462 | return 0; | |
463 | ||
2a8cc6c8 YH |
464 | rcu_read_lock(); |
465 | hlist_for_each_entry_rcu(p, pos, &ip6addrlbl_table.head, list) { | |
466 | if (idx >= s_idx) { | |
467 | if ((err = ip6addrlbl_fill(skb, p, | |
468 | ip6addrlbl_table.seq, | |
469 | NETLINK_CB(cb->skb).pid, | |
470 | cb->nlh->nlmsg_seq, | |
471 | RTM_NEWADDRLABEL, | |
472 | NLM_F_MULTI)) <= 0) | |
473 | break; | |
474 | } | |
475 | idx++; | |
476 | } | |
477 | rcu_read_unlock(); | |
478 | cb->args[0] = idx; | |
479 | return skb->len; | |
480 | } | |
481 | ||
482 | static inline int ip6addrlbl_msgsize(void) | |
483 | { | |
484 | return (NLMSG_ALIGN(sizeof(struct ifaddrlblmsg)) | |
485 | + nla_total_size(16) /* IFAL_ADDRESS */ | |
486 | + nla_total_size(4) /* IFAL_LABEL */ | |
487 | ); | |
488 | } | |
489 | ||
490 | static int ip6addrlbl_get(struct sk_buff *in_skb, struct nlmsghdr* nlh, | |
491 | void *arg) | |
492 | { | |
b854272b | 493 | struct net *net = in_skb->sk->sk_net; |
2a8cc6c8 YH |
494 | struct ifaddrlblmsg *ifal; |
495 | struct nlattr *tb[IFAL_MAX+1]; | |
496 | struct in6_addr *addr; | |
497 | u32 lseq; | |
498 | int err = 0; | |
499 | struct ip6addrlbl_entry *p; | |
500 | struct sk_buff *skb; | |
501 | ||
b854272b DL |
502 | if (net != &init_net) |
503 | return 0; | |
504 | ||
2a8cc6c8 YH |
505 | err = nlmsg_parse(nlh, sizeof(*ifal), tb, IFAL_MAX, ifal_policy); |
506 | if (err < 0) | |
507 | return err; | |
508 | ||
509 | ifal = nlmsg_data(nlh); | |
510 | ||
511 | if (ifal->ifal_family != AF_INET6 || | |
512 | ifal->ifal_prefixlen != 128) | |
513 | return -EINVAL; | |
514 | ||
515 | if (ifal->ifal_index && | |
516 | !__dev_get_by_index(&init_net, ifal->ifal_index)) | |
517 | return -EINVAL; | |
518 | ||
519 | if (!tb[IFAL_ADDRESS]) | |
520 | return -EINVAL; | |
521 | ||
522 | addr = nla_data(tb[IFAL_ADDRESS]); | |
523 | if (!addr) | |
524 | return -EINVAL; | |
525 | ||
526 | rcu_read_lock(); | |
527 | p = __ipv6_addr_label(addr, ipv6_addr_type(addr), ifal->ifal_index); | |
528 | if (p && ip6addrlbl_hold(p)) | |
529 | p = NULL; | |
530 | lseq = ip6addrlbl_table.seq; | |
531 | rcu_read_unlock(); | |
532 | ||
533 | if (!p) { | |
534 | err = -ESRCH; | |
535 | goto out; | |
536 | } | |
537 | ||
538 | if (!(skb = nlmsg_new(ip6addrlbl_msgsize(), GFP_KERNEL))) { | |
539 | ip6addrlbl_put(p); | |
540 | return -ENOBUFS; | |
541 | } | |
542 | ||
543 | err = ip6addrlbl_fill(skb, p, lseq, | |
544 | NETLINK_CB(in_skb).pid, nlh->nlmsg_seq, | |
545 | RTM_NEWADDRLABEL, 0); | |
546 | ||
547 | ip6addrlbl_put(p); | |
548 | ||
549 | if (err < 0) { | |
550 | WARN_ON(err == -EMSGSIZE); | |
551 | kfree_skb(skb); | |
552 | goto out; | |
553 | } | |
554 | ||
97c53cac | 555 | err = rtnl_unicast(skb, &init_net, NETLINK_CB(in_skb).pid); |
2a8cc6c8 YH |
556 | out: |
557 | return err; | |
558 | } | |
559 | ||
560 | void __init ipv6_addr_label_rtnl_register(void) | |
561 | { | |
562 | __rtnl_register(PF_INET6, RTM_NEWADDRLABEL, ip6addrlbl_newdel, NULL); | |
563 | __rtnl_register(PF_INET6, RTM_DELADDRLABEL, ip6addrlbl_newdel, NULL); | |
564 | __rtnl_register(PF_INET6, RTM_GETADDRLABEL, ip6addrlbl_get, ip6addrlbl_dump); | |
565 | } | |
566 |