Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * INET An implementation of the TCP/IP protocol suite for the LINUX | |
3 | * operating system. INET is implemented using the BSD Socket | |
4 | * interface as the means of communication with the user level. | |
5 | * | |
6 | * Routing netlink socket interface: protocol independent part. | |
7 | * | |
8 | * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or | |
11 | * modify it under the terms of the GNU General Public License | |
12 | * as published by the Free Software Foundation; either version | |
13 | * 2 of the License, or (at your option) any later version. | |
14 | * | |
15 | * Fixes: | |
16 | * Vitaly E. Lavrov RTA_OK arithmetics was wrong. | |
17 | */ | |
18 | ||
1da177e4 LT |
19 | #include <linux/errno.h> |
20 | #include <linux/module.h> | |
21 | #include <linux/types.h> | |
22 | #include <linux/socket.h> | |
23 | #include <linux/kernel.h> | |
1da177e4 LT |
24 | #include <linux/timer.h> |
25 | #include <linux/string.h> | |
26 | #include <linux/sockios.h> | |
27 | #include <linux/net.h> | |
28 | #include <linux/fcntl.h> | |
29 | #include <linux/mm.h> | |
30 | #include <linux/slab.h> | |
31 | #include <linux/interrupt.h> | |
32 | #include <linux/capability.h> | |
33 | #include <linux/skbuff.h> | |
34 | #include <linux/init.h> | |
35 | #include <linux/security.h> | |
6756ae4b | 36 | #include <linux/mutex.h> |
1823730f | 37 | #include <linux/if_addr.h> |
ebc08a6f | 38 | #include <linux/pci.h> |
1da177e4 LT |
39 | |
40 | #include <asm/uaccess.h> | |
41 | #include <asm/system.h> | |
1da177e4 LT |
42 | |
43 | #include <linux/inet.h> | |
44 | #include <linux/netdevice.h> | |
45 | #include <net/ip.h> | |
46 | #include <net/protocol.h> | |
47 | #include <net/arp.h> | |
48 | #include <net/route.h> | |
49 | #include <net/udp.h> | |
50 | #include <net/sock.h> | |
51 | #include <net/pkt_sched.h> | |
14c0b97d | 52 | #include <net/fib_rules.h> |
e2849863 | 53 | #include <net/rtnetlink.h> |
30ffee84 | 54 | #include <net/net_namespace.h> |
1da177e4 | 55 | |
e0d087af | 56 | struct rtnl_link { |
e2849863 TG |
57 | rtnl_doit_func doit; |
58 | rtnl_dumpit_func dumpit; | |
59 | }; | |
60 | ||
6756ae4b | 61 | static DEFINE_MUTEX(rtnl_mutex); |
1da177e4 LT |
62 | |
63 | void rtnl_lock(void) | |
64 | { | |
6756ae4b | 65 | mutex_lock(&rtnl_mutex); |
1da177e4 | 66 | } |
e0d087af | 67 | EXPORT_SYMBOL(rtnl_lock); |
1da177e4 | 68 | |
6756ae4b | 69 | void __rtnl_unlock(void) |
1da177e4 | 70 | { |
6756ae4b | 71 | mutex_unlock(&rtnl_mutex); |
1da177e4 | 72 | } |
6756ae4b | 73 | |
1da177e4 LT |
74 | void rtnl_unlock(void) |
75 | { | |
58ec3b4d | 76 | /* This fellow will unlock it for us. */ |
1da177e4 LT |
77 | netdev_run_todo(); |
78 | } | |
e0d087af | 79 | EXPORT_SYMBOL(rtnl_unlock); |
1da177e4 | 80 | |
6756ae4b SH |
81 | int rtnl_trylock(void) |
82 | { | |
83 | return mutex_trylock(&rtnl_mutex); | |
84 | } | |
e0d087af | 85 | EXPORT_SYMBOL(rtnl_trylock); |
6756ae4b | 86 | |
c9c1014b PM |
87 | int rtnl_is_locked(void) |
88 | { | |
89 | return mutex_is_locked(&rtnl_mutex); | |
90 | } | |
e0d087af | 91 | EXPORT_SYMBOL(rtnl_is_locked); |
c9c1014b | 92 | |
a898def2 PM |
93 | #ifdef CONFIG_PROVE_LOCKING |
94 | int lockdep_rtnl_is_held(void) | |
95 | { | |
96 | return lockdep_is_held(&rtnl_mutex); | |
97 | } | |
98 | EXPORT_SYMBOL(lockdep_rtnl_is_held); | |
99 | #endif /* #ifdef CONFIG_PROVE_LOCKING */ | |
100 | ||
25239cee | 101 | static struct rtnl_link *rtnl_msg_handlers[RTNL_FAMILY_MAX + 1]; |
e2849863 TG |
102 | |
103 | static inline int rtm_msgindex(int msgtype) | |
104 | { | |
105 | int msgindex = msgtype - RTM_BASE; | |
106 | ||
107 | /* | |
108 | * msgindex < 0 implies someone tried to register a netlink | |
109 | * control code. msgindex >= RTM_NR_MSGTYPES may indicate that | |
110 | * the message type has not been added to linux/rtnetlink.h | |
111 | */ | |
112 | BUG_ON(msgindex < 0 || msgindex >= RTM_NR_MSGTYPES); | |
113 | ||
114 | return msgindex; | |
115 | } | |
116 | ||
117 | static rtnl_doit_func rtnl_get_doit(int protocol, int msgindex) | |
118 | { | |
119 | struct rtnl_link *tab; | |
120 | ||
25239cee | 121 | if (protocol <= RTNL_FAMILY_MAX) |
0f87b1dd PM |
122 | tab = rtnl_msg_handlers[protocol]; |
123 | else | |
124 | tab = NULL; | |
125 | ||
51057f2f | 126 | if (tab == NULL || tab[msgindex].doit == NULL) |
e2849863 TG |
127 | tab = rtnl_msg_handlers[PF_UNSPEC]; |
128 | ||
51057f2f | 129 | return tab ? tab[msgindex].doit : NULL; |
e2849863 TG |
130 | } |
131 | ||
132 | static rtnl_dumpit_func rtnl_get_dumpit(int protocol, int msgindex) | |
133 | { | |
134 | struct rtnl_link *tab; | |
135 | ||
25239cee | 136 | if (protocol <= RTNL_FAMILY_MAX) |
0f87b1dd PM |
137 | tab = rtnl_msg_handlers[protocol]; |
138 | else | |
139 | tab = NULL; | |
140 | ||
51057f2f | 141 | if (tab == NULL || tab[msgindex].dumpit == NULL) |
e2849863 TG |
142 | tab = rtnl_msg_handlers[PF_UNSPEC]; |
143 | ||
51057f2f | 144 | return tab ? tab[msgindex].dumpit : NULL; |
e2849863 TG |
145 | } |
146 | ||
147 | /** | |
148 | * __rtnl_register - Register a rtnetlink message type | |
149 | * @protocol: Protocol family or PF_UNSPEC | |
150 | * @msgtype: rtnetlink message type | |
151 | * @doit: Function pointer called for each request message | |
152 | * @dumpit: Function pointer called for each dump request (NLM_F_DUMP) message | |
153 | * | |
154 | * Registers the specified function pointers (at least one of them has | |
155 | * to be non-NULL) to be called whenever a request message for the | |
156 | * specified protocol family and message type is received. | |
157 | * | |
158 | * The special protocol family PF_UNSPEC may be used to define fallback | |
159 | * function pointers for the case when no entry for the specific protocol | |
160 | * family exists. | |
161 | * | |
162 | * Returns 0 on success or a negative error code. | |
163 | */ | |
164 | int __rtnl_register(int protocol, int msgtype, | |
165 | rtnl_doit_func doit, rtnl_dumpit_func dumpit) | |
166 | { | |
167 | struct rtnl_link *tab; | |
168 | int msgindex; | |
169 | ||
25239cee | 170 | BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX); |
e2849863 TG |
171 | msgindex = rtm_msgindex(msgtype); |
172 | ||
173 | tab = rtnl_msg_handlers[protocol]; | |
174 | if (tab == NULL) { | |
175 | tab = kcalloc(RTM_NR_MSGTYPES, sizeof(*tab), GFP_KERNEL); | |
176 | if (tab == NULL) | |
177 | return -ENOBUFS; | |
178 | ||
179 | rtnl_msg_handlers[protocol] = tab; | |
180 | } | |
181 | ||
182 | if (doit) | |
183 | tab[msgindex].doit = doit; | |
184 | ||
185 | if (dumpit) | |
186 | tab[msgindex].dumpit = dumpit; | |
187 | ||
188 | return 0; | |
189 | } | |
e2849863 TG |
190 | EXPORT_SYMBOL_GPL(__rtnl_register); |
191 | ||
192 | /** | |
193 | * rtnl_register - Register a rtnetlink message type | |
194 | * | |
195 | * Identical to __rtnl_register() but panics on failure. This is useful | |
196 | * as failure of this function is very unlikely, it can only happen due | |
197 | * to lack of memory when allocating the chain to store all message | |
198 | * handlers for a protocol. Meant for use in init functions where lack | |
199 | * of memory implies no sense in continueing. | |
200 | */ | |
201 | void rtnl_register(int protocol, int msgtype, | |
202 | rtnl_doit_func doit, rtnl_dumpit_func dumpit) | |
203 | { | |
204 | if (__rtnl_register(protocol, msgtype, doit, dumpit) < 0) | |
205 | panic("Unable to register rtnetlink message handler, " | |
206 | "protocol = %d, message type = %d\n", | |
207 | protocol, msgtype); | |
208 | } | |
e2849863 TG |
209 | EXPORT_SYMBOL_GPL(rtnl_register); |
210 | ||
211 | /** | |
212 | * rtnl_unregister - Unregister a rtnetlink message type | |
213 | * @protocol: Protocol family or PF_UNSPEC | |
214 | * @msgtype: rtnetlink message type | |
215 | * | |
216 | * Returns 0 on success or a negative error code. | |
217 | */ | |
218 | int rtnl_unregister(int protocol, int msgtype) | |
219 | { | |
220 | int msgindex; | |
221 | ||
25239cee | 222 | BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX); |
e2849863 TG |
223 | msgindex = rtm_msgindex(msgtype); |
224 | ||
225 | if (rtnl_msg_handlers[protocol] == NULL) | |
226 | return -ENOENT; | |
227 | ||
228 | rtnl_msg_handlers[protocol][msgindex].doit = NULL; | |
229 | rtnl_msg_handlers[protocol][msgindex].dumpit = NULL; | |
230 | ||
231 | return 0; | |
232 | } | |
e2849863 TG |
233 | EXPORT_SYMBOL_GPL(rtnl_unregister); |
234 | ||
235 | /** | |
236 | * rtnl_unregister_all - Unregister all rtnetlink message type of a protocol | |
237 | * @protocol : Protocol family or PF_UNSPEC | |
238 | * | |
239 | * Identical to calling rtnl_unregster() for all registered message types | |
240 | * of a certain protocol family. | |
241 | */ | |
242 | void rtnl_unregister_all(int protocol) | |
243 | { | |
25239cee | 244 | BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX); |
e2849863 TG |
245 | |
246 | kfree(rtnl_msg_handlers[protocol]); | |
247 | rtnl_msg_handlers[protocol] = NULL; | |
248 | } | |
e2849863 | 249 | EXPORT_SYMBOL_GPL(rtnl_unregister_all); |
1da177e4 | 250 | |
38f7b870 PM |
251 | static LIST_HEAD(link_ops); |
252 | ||
253 | /** | |
254 | * __rtnl_link_register - Register rtnl_link_ops with rtnetlink. | |
255 | * @ops: struct rtnl_link_ops * to register | |
256 | * | |
257 | * The caller must hold the rtnl_mutex. This function should be used | |
258 | * by drivers that create devices during module initialization. It | |
259 | * must be called before registering the devices. | |
260 | * | |
261 | * Returns 0 on success or a negative error code. | |
262 | */ | |
263 | int __rtnl_link_register(struct rtnl_link_ops *ops) | |
264 | { | |
2d85cba2 | 265 | if (!ops->dellink) |
23289a37 | 266 | ops->dellink = unregister_netdevice_queue; |
2d85cba2 | 267 | |
38f7b870 PM |
268 | list_add_tail(&ops->list, &link_ops); |
269 | return 0; | |
270 | } | |
38f7b870 PM |
271 | EXPORT_SYMBOL_GPL(__rtnl_link_register); |
272 | ||
273 | /** | |
274 | * rtnl_link_register - Register rtnl_link_ops with rtnetlink. | |
275 | * @ops: struct rtnl_link_ops * to register | |
276 | * | |
277 | * Returns 0 on success or a negative error code. | |
278 | */ | |
279 | int rtnl_link_register(struct rtnl_link_ops *ops) | |
280 | { | |
281 | int err; | |
282 | ||
283 | rtnl_lock(); | |
284 | err = __rtnl_link_register(ops); | |
285 | rtnl_unlock(); | |
286 | return err; | |
287 | } | |
38f7b870 PM |
288 | EXPORT_SYMBOL_GPL(rtnl_link_register); |
289 | ||
669f87ba PE |
290 | static void __rtnl_kill_links(struct net *net, struct rtnl_link_ops *ops) |
291 | { | |
292 | struct net_device *dev; | |
23289a37 ED |
293 | LIST_HEAD(list_kill); |
294 | ||
669f87ba | 295 | for_each_netdev(net, dev) { |
23289a37 ED |
296 | if (dev->rtnl_link_ops == ops) |
297 | ops->dellink(dev, &list_kill); | |
669f87ba | 298 | } |
23289a37 | 299 | unregister_netdevice_many(&list_kill); |
669f87ba PE |
300 | } |
301 | ||
38f7b870 PM |
302 | /** |
303 | * __rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink. | |
304 | * @ops: struct rtnl_link_ops * to unregister | |
305 | * | |
2d85cba2 | 306 | * The caller must hold the rtnl_mutex. |
38f7b870 PM |
307 | */ |
308 | void __rtnl_link_unregister(struct rtnl_link_ops *ops) | |
309 | { | |
881d966b | 310 | struct net *net; |
2d85cba2 | 311 | |
881d966b | 312 | for_each_net(net) { |
669f87ba | 313 | __rtnl_kill_links(net, ops); |
2d85cba2 | 314 | } |
38f7b870 PM |
315 | list_del(&ops->list); |
316 | } | |
38f7b870 PM |
317 | EXPORT_SYMBOL_GPL(__rtnl_link_unregister); |
318 | ||
319 | /** | |
320 | * rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink. | |
321 | * @ops: struct rtnl_link_ops * to unregister | |
322 | */ | |
323 | void rtnl_link_unregister(struct rtnl_link_ops *ops) | |
324 | { | |
325 | rtnl_lock(); | |
326 | __rtnl_link_unregister(ops); | |
327 | rtnl_unlock(); | |
328 | } | |
38f7b870 PM |
329 | EXPORT_SYMBOL_GPL(rtnl_link_unregister); |
330 | ||
331 | static const struct rtnl_link_ops *rtnl_link_ops_get(const char *kind) | |
332 | { | |
333 | const struct rtnl_link_ops *ops; | |
334 | ||
335 | list_for_each_entry(ops, &link_ops, list) { | |
336 | if (!strcmp(ops->kind, kind)) | |
337 | return ops; | |
338 | } | |
339 | return NULL; | |
340 | } | |
341 | ||
342 | static size_t rtnl_link_get_size(const struct net_device *dev) | |
343 | { | |
344 | const struct rtnl_link_ops *ops = dev->rtnl_link_ops; | |
345 | size_t size; | |
346 | ||
347 | if (!ops) | |
348 | return 0; | |
349 | ||
369cf77a TG |
350 | size = nla_total_size(sizeof(struct nlattr)) + /* IFLA_LINKINFO */ |
351 | nla_total_size(strlen(ops->kind) + 1); /* IFLA_INFO_KIND */ | |
38f7b870 PM |
352 | |
353 | if (ops->get_size) | |
354 | /* IFLA_INFO_DATA + nested data */ | |
369cf77a | 355 | size += nla_total_size(sizeof(struct nlattr)) + |
38f7b870 PM |
356 | ops->get_size(dev); |
357 | ||
358 | if (ops->get_xstats_size) | |
369cf77a TG |
359 | /* IFLA_INFO_XSTATS */ |
360 | size += nla_total_size(ops->get_xstats_size(dev)); | |
38f7b870 PM |
361 | |
362 | return size; | |
363 | } | |
364 | ||
f8ff182c TG |
365 | static LIST_HEAD(rtnl_af_ops); |
366 | ||
367 | static const struct rtnl_af_ops *rtnl_af_lookup(const int family) | |
368 | { | |
369 | const struct rtnl_af_ops *ops; | |
370 | ||
371 | list_for_each_entry(ops, &rtnl_af_ops, list) { | |
372 | if (ops->family == family) | |
373 | return ops; | |
374 | } | |
375 | ||
376 | return NULL; | |
377 | } | |
378 | ||
379 | /** | |
380 | * __rtnl_af_register - Register rtnl_af_ops with rtnetlink. | |
381 | * @ops: struct rtnl_af_ops * to register | |
382 | * | |
383 | * The caller must hold the rtnl_mutex. | |
384 | * | |
385 | * Returns 0 on success or a negative error code. | |
386 | */ | |
387 | int __rtnl_af_register(struct rtnl_af_ops *ops) | |
388 | { | |
389 | list_add_tail(&ops->list, &rtnl_af_ops); | |
390 | return 0; | |
391 | } | |
392 | EXPORT_SYMBOL_GPL(__rtnl_af_register); | |
393 | ||
394 | /** | |
395 | * rtnl_af_register - Register rtnl_af_ops with rtnetlink. | |
396 | * @ops: struct rtnl_af_ops * to register | |
397 | * | |
398 | * Returns 0 on success or a negative error code. | |
399 | */ | |
400 | int rtnl_af_register(struct rtnl_af_ops *ops) | |
401 | { | |
402 | int err; | |
403 | ||
404 | rtnl_lock(); | |
405 | err = __rtnl_af_register(ops); | |
406 | rtnl_unlock(); | |
407 | return err; | |
408 | } | |
409 | EXPORT_SYMBOL_GPL(rtnl_af_register); | |
410 | ||
411 | /** | |
412 | * __rtnl_af_unregister - Unregister rtnl_af_ops from rtnetlink. | |
413 | * @ops: struct rtnl_af_ops * to unregister | |
414 | * | |
415 | * The caller must hold the rtnl_mutex. | |
416 | */ | |
417 | void __rtnl_af_unregister(struct rtnl_af_ops *ops) | |
418 | { | |
419 | list_del(&ops->list); | |
420 | } | |
421 | EXPORT_SYMBOL_GPL(__rtnl_af_unregister); | |
422 | ||
423 | /** | |
424 | * rtnl_af_unregister - Unregister rtnl_af_ops from rtnetlink. | |
425 | * @ops: struct rtnl_af_ops * to unregister | |
426 | */ | |
427 | void rtnl_af_unregister(struct rtnl_af_ops *ops) | |
428 | { | |
429 | rtnl_lock(); | |
430 | __rtnl_af_unregister(ops); | |
431 | rtnl_unlock(); | |
432 | } | |
433 | EXPORT_SYMBOL_GPL(rtnl_af_unregister); | |
434 | ||
435 | static size_t rtnl_link_get_af_size(const struct net_device *dev) | |
436 | { | |
437 | struct rtnl_af_ops *af_ops; | |
438 | size_t size; | |
439 | ||
440 | /* IFLA_AF_SPEC */ | |
441 | size = nla_total_size(sizeof(struct nlattr)); | |
442 | ||
443 | list_for_each_entry(af_ops, &rtnl_af_ops, list) { | |
444 | if (af_ops->get_link_af_size) { | |
445 | /* AF_* + nested data */ | |
446 | size += nla_total_size(sizeof(struct nlattr)) + | |
447 | af_ops->get_link_af_size(dev); | |
448 | } | |
449 | } | |
450 | ||
451 | return size; | |
452 | } | |
453 | ||
38f7b870 PM |
454 | static int rtnl_link_fill(struct sk_buff *skb, const struct net_device *dev) |
455 | { | |
456 | const struct rtnl_link_ops *ops = dev->rtnl_link_ops; | |
457 | struct nlattr *linkinfo, *data; | |
458 | int err = -EMSGSIZE; | |
459 | ||
460 | linkinfo = nla_nest_start(skb, IFLA_LINKINFO); | |
461 | if (linkinfo == NULL) | |
462 | goto out; | |
463 | ||
464 | if (nla_put_string(skb, IFLA_INFO_KIND, ops->kind) < 0) | |
465 | goto err_cancel_link; | |
466 | if (ops->fill_xstats) { | |
467 | err = ops->fill_xstats(skb, dev); | |
468 | if (err < 0) | |
469 | goto err_cancel_link; | |
470 | } | |
471 | if (ops->fill_info) { | |
472 | data = nla_nest_start(skb, IFLA_INFO_DATA); | |
473 | if (data == NULL) | |
474 | goto err_cancel_link; | |
475 | err = ops->fill_info(skb, dev); | |
476 | if (err < 0) | |
477 | goto err_cancel_data; | |
478 | nla_nest_end(skb, data); | |
479 | } | |
480 | ||
481 | nla_nest_end(skb, linkinfo); | |
482 | return 0; | |
483 | ||
484 | err_cancel_data: | |
485 | nla_nest_cancel(skb, data); | |
486 | err_cancel_link: | |
487 | nla_nest_cancel(skb, linkinfo); | |
488 | out: | |
489 | return err; | |
490 | } | |
491 | ||
db46edc6 | 492 | static const int rtm_min[RTM_NR_FAMILIES] = |
1da177e4 | 493 | { |
f90a0a74 TG |
494 | [RTM_FAM(RTM_NEWLINK)] = NLMSG_LENGTH(sizeof(struct ifinfomsg)), |
495 | [RTM_FAM(RTM_NEWADDR)] = NLMSG_LENGTH(sizeof(struct ifaddrmsg)), | |
496 | [RTM_FAM(RTM_NEWROUTE)] = NLMSG_LENGTH(sizeof(struct rtmsg)), | |
14c0b97d | 497 | [RTM_FAM(RTM_NEWRULE)] = NLMSG_LENGTH(sizeof(struct fib_rule_hdr)), |
f90a0a74 TG |
498 | [RTM_FAM(RTM_NEWQDISC)] = NLMSG_LENGTH(sizeof(struct tcmsg)), |
499 | [RTM_FAM(RTM_NEWTCLASS)] = NLMSG_LENGTH(sizeof(struct tcmsg)), | |
500 | [RTM_FAM(RTM_NEWTFILTER)] = NLMSG_LENGTH(sizeof(struct tcmsg)), | |
501 | [RTM_FAM(RTM_NEWACTION)] = NLMSG_LENGTH(sizeof(struct tcamsg)), | |
f90a0a74 TG |
502 | [RTM_FAM(RTM_GETMULTICAST)] = NLMSG_LENGTH(sizeof(struct rtgenmsg)), |
503 | [RTM_FAM(RTM_GETANYCAST)] = NLMSG_LENGTH(sizeof(struct rtgenmsg)), | |
1da177e4 LT |
504 | }; |
505 | ||
db46edc6 | 506 | static const int rta_max[RTM_NR_FAMILIES] = |
1da177e4 | 507 | { |
f90a0a74 TG |
508 | [RTM_FAM(RTM_NEWLINK)] = IFLA_MAX, |
509 | [RTM_FAM(RTM_NEWADDR)] = IFA_MAX, | |
510 | [RTM_FAM(RTM_NEWROUTE)] = RTA_MAX, | |
14c0b97d | 511 | [RTM_FAM(RTM_NEWRULE)] = FRA_MAX, |
f90a0a74 TG |
512 | [RTM_FAM(RTM_NEWQDISC)] = TCA_MAX, |
513 | [RTM_FAM(RTM_NEWTCLASS)] = TCA_MAX, | |
514 | [RTM_FAM(RTM_NEWTFILTER)] = TCA_MAX, | |
515 | [RTM_FAM(RTM_NEWACTION)] = TCAA_MAX, | |
1da177e4 LT |
516 | }; |
517 | ||
518 | void __rta_fill(struct sk_buff *skb, int attrtype, int attrlen, const void *data) | |
519 | { | |
520 | struct rtattr *rta; | |
521 | int size = RTA_LENGTH(attrlen); | |
522 | ||
e0d087af | 523 | rta = (struct rtattr *)skb_put(skb, RTA_ALIGN(size)); |
1da177e4 LT |
524 | rta->rta_type = attrtype; |
525 | rta->rta_len = size; | |
526 | memcpy(RTA_DATA(rta), data, attrlen); | |
b3563c4f | 527 | memset(RTA_DATA(rta) + attrlen, 0, RTA_ALIGN(size) - size); |
1da177e4 | 528 | } |
e0d087af | 529 | EXPORT_SYMBOL(__rta_fill); |
1da177e4 | 530 | |
97c53cac | 531 | int rtnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, unsigned group, int echo) |
1da177e4 | 532 | { |
97c53cac | 533 | struct sock *rtnl = net->rtnl; |
1da177e4 LT |
534 | int err = 0; |
535 | ||
ac6d439d | 536 | NETLINK_CB(skb).dst_group = group; |
1da177e4 LT |
537 | if (echo) |
538 | atomic_inc(&skb->users); | |
539 | netlink_broadcast(rtnl, skb, pid, group, GFP_KERNEL); | |
540 | if (echo) | |
541 | err = netlink_unicast(rtnl, skb, pid, MSG_DONTWAIT); | |
542 | return err; | |
543 | } | |
544 | ||
97c53cac | 545 | int rtnl_unicast(struct sk_buff *skb, struct net *net, u32 pid) |
2942e900 | 546 | { |
97c53cac DL |
547 | struct sock *rtnl = net->rtnl; |
548 | ||
2942e900 TG |
549 | return nlmsg_unicast(rtnl, skb, pid); |
550 | } | |
e0d087af | 551 | EXPORT_SYMBOL(rtnl_unicast); |
2942e900 | 552 | |
1ce85fe4 PNA |
553 | void rtnl_notify(struct sk_buff *skb, struct net *net, u32 pid, u32 group, |
554 | struct nlmsghdr *nlh, gfp_t flags) | |
97676b6b | 555 | { |
97c53cac | 556 | struct sock *rtnl = net->rtnl; |
97676b6b TG |
557 | int report = 0; |
558 | ||
559 | if (nlh) | |
560 | report = nlmsg_report(nlh); | |
561 | ||
1ce85fe4 | 562 | nlmsg_notify(rtnl, skb, pid, group, report, flags); |
97676b6b | 563 | } |
e0d087af | 564 | EXPORT_SYMBOL(rtnl_notify); |
97676b6b | 565 | |
97c53cac | 566 | void rtnl_set_sk_err(struct net *net, u32 group, int error) |
97676b6b | 567 | { |
97c53cac DL |
568 | struct sock *rtnl = net->rtnl; |
569 | ||
97676b6b TG |
570 | netlink_set_err(rtnl, 0, group, error); |
571 | } | |
e0d087af | 572 | EXPORT_SYMBOL(rtnl_set_sk_err); |
97676b6b | 573 | |
1da177e4 LT |
574 | int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics) |
575 | { | |
2d7202bf TG |
576 | struct nlattr *mx; |
577 | int i, valid = 0; | |
578 | ||
579 | mx = nla_nest_start(skb, RTA_METRICS); | |
580 | if (mx == NULL) | |
581 | return -ENOBUFS; | |
582 | ||
583 | for (i = 0; i < RTAX_MAX; i++) { | |
584 | if (metrics[i]) { | |
585 | valid++; | |
586 | NLA_PUT_U32(skb, i+1, metrics[i]); | |
587 | } | |
1da177e4 | 588 | } |
1da177e4 | 589 | |
a57d27fc DM |
590 | if (!valid) { |
591 | nla_nest_cancel(skb, mx); | |
592 | return 0; | |
593 | } | |
2d7202bf TG |
594 | |
595 | return nla_nest_end(skb, mx); | |
596 | ||
597 | nla_put_failure: | |
bc3ed28c TG |
598 | nla_nest_cancel(skb, mx); |
599 | return -EMSGSIZE; | |
1da177e4 | 600 | } |
e0d087af | 601 | EXPORT_SYMBOL(rtnetlink_put_metrics); |
1da177e4 | 602 | |
e3703b3d TG |
603 | int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst, u32 id, |
604 | u32 ts, u32 tsage, long expires, u32 error) | |
605 | { | |
606 | struct rta_cacheinfo ci = { | |
607 | .rta_lastuse = jiffies_to_clock_t(jiffies - dst->lastuse), | |
608 | .rta_used = dst->__use, | |
609 | .rta_clntref = atomic_read(&(dst->__refcnt)), | |
610 | .rta_error = error, | |
611 | .rta_id = id, | |
612 | .rta_ts = ts, | |
613 | .rta_tsage = tsage, | |
614 | }; | |
615 | ||
616 | if (expires) | |
617 | ci.rta_expires = jiffies_to_clock_t(expires); | |
618 | ||
619 | return nla_put(skb, RTA_CACHEINFO, sizeof(ci), &ci); | |
620 | } | |
e3703b3d | 621 | EXPORT_SYMBOL_GPL(rtnl_put_cacheinfo); |
1da177e4 | 622 | |
93b2d4a2 | 623 | static void set_operstate(struct net_device *dev, unsigned char transition) |
b00055aa SR |
624 | { |
625 | unsigned char operstate = dev->operstate; | |
626 | ||
e0d087af | 627 | switch (transition) { |
b00055aa SR |
628 | case IF_OPER_UP: |
629 | if ((operstate == IF_OPER_DORMANT || | |
630 | operstate == IF_OPER_UNKNOWN) && | |
631 | !netif_dormant(dev)) | |
632 | operstate = IF_OPER_UP; | |
633 | break; | |
634 | ||
635 | case IF_OPER_DORMANT: | |
636 | if (operstate == IF_OPER_UP || | |
637 | operstate == IF_OPER_UNKNOWN) | |
638 | operstate = IF_OPER_DORMANT; | |
639 | break; | |
3ff50b79 | 640 | } |
b00055aa SR |
641 | |
642 | if (dev->operstate != operstate) { | |
643 | write_lock_bh(&dev_base_lock); | |
644 | dev->operstate = operstate; | |
645 | write_unlock_bh(&dev_base_lock); | |
93b2d4a2 DM |
646 | netdev_state_change(dev); |
647 | } | |
b00055aa SR |
648 | } |
649 | ||
3729d502 PM |
650 | static unsigned int rtnl_dev_combine_flags(const struct net_device *dev, |
651 | const struct ifinfomsg *ifm) | |
652 | { | |
653 | unsigned int flags = ifm->ifi_flags; | |
654 | ||
655 | /* bugwards compatibility: ifi_change == 0 is treated as ~0 */ | |
656 | if (ifm->ifi_change) | |
657 | flags = (flags & ifm->ifi_change) | | |
658 | (dev->flags & ~ifm->ifi_change); | |
659 | ||
660 | return flags; | |
661 | } | |
662 | ||
b60c5115 | 663 | static void copy_rtnl_link_stats(struct rtnl_link_stats *a, |
be1f3c2c | 664 | const struct rtnl_link_stats64 *b) |
1da177e4 | 665 | { |
b60c5115 TG |
666 | a->rx_packets = b->rx_packets; |
667 | a->tx_packets = b->tx_packets; | |
668 | a->rx_bytes = b->rx_bytes; | |
669 | a->tx_bytes = b->tx_bytes; | |
670 | a->rx_errors = b->rx_errors; | |
671 | a->tx_errors = b->tx_errors; | |
672 | a->rx_dropped = b->rx_dropped; | |
673 | a->tx_dropped = b->tx_dropped; | |
674 | ||
675 | a->multicast = b->multicast; | |
676 | a->collisions = b->collisions; | |
677 | ||
678 | a->rx_length_errors = b->rx_length_errors; | |
679 | a->rx_over_errors = b->rx_over_errors; | |
680 | a->rx_crc_errors = b->rx_crc_errors; | |
681 | a->rx_frame_errors = b->rx_frame_errors; | |
682 | a->rx_fifo_errors = b->rx_fifo_errors; | |
683 | a->rx_missed_errors = b->rx_missed_errors; | |
684 | ||
685 | a->tx_aborted_errors = b->tx_aborted_errors; | |
686 | a->tx_carrier_errors = b->tx_carrier_errors; | |
687 | a->tx_fifo_errors = b->tx_fifo_errors; | |
688 | a->tx_heartbeat_errors = b->tx_heartbeat_errors; | |
689 | a->tx_window_errors = b->tx_window_errors; | |
690 | ||
691 | a->rx_compressed = b->rx_compressed; | |
692 | a->tx_compressed = b->tx_compressed; | |
10708f37 JE |
693 | } |
694 | ||
be1f3c2c | 695 | static void copy_rtnl_link_stats64(void *v, const struct rtnl_link_stats64 *b) |
10708f37 | 696 | { |
afdcba37 | 697 | memcpy(v, b, sizeof(*b)); |
10708f37 | 698 | } |
1da177e4 | 699 | |
c02db8c6 | 700 | /* All VF info */ |
ebc08a6f WM |
701 | static inline int rtnl_vfinfo_size(const struct net_device *dev) |
702 | { | |
c02db8c6 CW |
703 | if (dev->dev.parent && dev_is_pci(dev->dev.parent)) { |
704 | ||
705 | int num_vfs = dev_num_vf(dev->dev.parent); | |
045de01a SF |
706 | size_t size = nla_total_size(sizeof(struct nlattr)); |
707 | size += nla_total_size(num_vfs * sizeof(struct nlattr)); | |
708 | size += num_vfs * | |
709 | (nla_total_size(sizeof(struct ifla_vf_mac)) + | |
710 | nla_total_size(sizeof(struct ifla_vf_vlan)) + | |
711 | nla_total_size(sizeof(struct ifla_vf_tx_rate))); | |
c02db8c6 CW |
712 | return size; |
713 | } else | |
ebc08a6f WM |
714 | return 0; |
715 | } | |
716 | ||
57b61080 SF |
717 | static size_t rtnl_port_size(const struct net_device *dev) |
718 | { | |
719 | size_t port_size = nla_total_size(4) /* PORT_VF */ | |
720 | + nla_total_size(PORT_PROFILE_MAX) /* PORT_PROFILE */ | |
721 | + nla_total_size(sizeof(struct ifla_port_vsi)) | |
722 | /* PORT_VSI_TYPE */ | |
723 | + nla_total_size(PORT_UUID_MAX) /* PORT_INSTANCE_UUID */ | |
724 | + nla_total_size(PORT_UUID_MAX) /* PORT_HOST_UUID */ | |
725 | + nla_total_size(1) /* PROT_VDP_REQUEST */ | |
726 | + nla_total_size(2); /* PORT_VDP_RESPONSE */ | |
727 | size_t vf_ports_size = nla_total_size(sizeof(struct nlattr)); | |
728 | size_t vf_port_size = nla_total_size(sizeof(struct nlattr)) | |
729 | + port_size; | |
730 | size_t port_self_size = nla_total_size(sizeof(struct nlattr)) | |
731 | + port_size; | |
732 | ||
733 | if (!dev->netdev_ops->ndo_get_vf_port || !dev->dev.parent) | |
734 | return 0; | |
735 | if (dev_num_vf(dev->dev.parent)) | |
736 | return port_self_size + vf_ports_size + | |
737 | vf_port_size * dev_num_vf(dev->dev.parent); | |
738 | else | |
739 | return port_self_size; | |
740 | } | |
741 | ||
9e34a5b5 | 742 | static noinline size_t if_nlmsg_size(const struct net_device *dev) |
339bf98f TG |
743 | { |
744 | return NLMSG_ALIGN(sizeof(struct ifinfomsg)) | |
745 | + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */ | |
0b815a1a | 746 | + nla_total_size(IFALIASZ) /* IFLA_IFALIAS */ |
339bf98f TG |
747 | + nla_total_size(IFNAMSIZ) /* IFLA_QDISC */ |
748 | + nla_total_size(sizeof(struct rtnl_link_ifmap)) | |
749 | + nla_total_size(sizeof(struct rtnl_link_stats)) | |
adcfe196 | 750 | + nla_total_size(sizeof(struct rtnl_link_stats64)) |
339bf98f TG |
751 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */ |
752 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_BROADCAST */ | |
753 | + nla_total_size(4) /* IFLA_TXQLEN */ | |
754 | + nla_total_size(4) /* IFLA_WEIGHT */ | |
755 | + nla_total_size(4) /* IFLA_MTU */ | |
756 | + nla_total_size(4) /* IFLA_LINK */ | |
757 | + nla_total_size(4) /* IFLA_MASTER */ | |
758 | + nla_total_size(1) /* IFLA_OPERSTATE */ | |
38f7b870 | 759 | + nla_total_size(1) /* IFLA_LINKMODE */ |
ebc08a6f | 760 | + nla_total_size(4) /* IFLA_NUM_VF */ |
c02db8c6 | 761 | + rtnl_vfinfo_size(dev) /* IFLA_VFINFO_LIST */ |
57b61080 | 762 | + rtnl_port_size(dev) /* IFLA_VF_PORTS + IFLA_PORT_SELF */ |
f8ff182c TG |
763 | + rtnl_link_get_size(dev) /* IFLA_LINKINFO */ |
764 | + rtnl_link_get_af_size(dev); /* IFLA_AF_SPEC */ | |
339bf98f TG |
765 | } |
766 | ||
57b61080 SF |
767 | static int rtnl_vf_ports_fill(struct sk_buff *skb, struct net_device *dev) |
768 | { | |
769 | struct nlattr *vf_ports; | |
770 | struct nlattr *vf_port; | |
771 | int vf; | |
772 | int err; | |
773 | ||
774 | vf_ports = nla_nest_start(skb, IFLA_VF_PORTS); | |
775 | if (!vf_ports) | |
776 | return -EMSGSIZE; | |
777 | ||
778 | for (vf = 0; vf < dev_num_vf(dev->dev.parent); vf++) { | |
779 | vf_port = nla_nest_start(skb, IFLA_VF_PORT); | |
8ca94183 SF |
780 | if (!vf_port) |
781 | goto nla_put_failure; | |
57b61080 SF |
782 | NLA_PUT_U32(skb, IFLA_PORT_VF, vf); |
783 | err = dev->netdev_ops->ndo_get_vf_port(dev, vf, skb); | |
8ca94183 SF |
784 | if (err == -EMSGSIZE) |
785 | goto nla_put_failure; | |
57b61080 | 786 | if (err) { |
57b61080 SF |
787 | nla_nest_cancel(skb, vf_port); |
788 | continue; | |
789 | } | |
790 | nla_nest_end(skb, vf_port); | |
791 | } | |
792 | ||
793 | nla_nest_end(skb, vf_ports); | |
794 | ||
795 | return 0; | |
8ca94183 SF |
796 | |
797 | nla_put_failure: | |
798 | nla_nest_cancel(skb, vf_ports); | |
799 | return -EMSGSIZE; | |
57b61080 SF |
800 | } |
801 | ||
802 | static int rtnl_port_self_fill(struct sk_buff *skb, struct net_device *dev) | |
803 | { | |
804 | struct nlattr *port_self; | |
805 | int err; | |
806 | ||
807 | port_self = nla_nest_start(skb, IFLA_PORT_SELF); | |
808 | if (!port_self) | |
809 | return -EMSGSIZE; | |
810 | ||
811 | err = dev->netdev_ops->ndo_get_vf_port(dev, PORT_SELF_VF, skb); | |
812 | if (err) { | |
813 | nla_nest_cancel(skb, port_self); | |
8ca94183 | 814 | return (err == -EMSGSIZE) ? err : 0; |
57b61080 SF |
815 | } |
816 | ||
817 | nla_nest_end(skb, port_self); | |
818 | ||
819 | return 0; | |
820 | } | |
821 | ||
822 | static int rtnl_port_fill(struct sk_buff *skb, struct net_device *dev) | |
823 | { | |
824 | int err; | |
825 | ||
826 | if (!dev->netdev_ops->ndo_get_vf_port || !dev->dev.parent) | |
827 | return 0; | |
828 | ||
829 | err = rtnl_port_self_fill(skb, dev); | |
830 | if (err) | |
831 | return err; | |
832 | ||
833 | if (dev_num_vf(dev->dev.parent)) { | |
834 | err = rtnl_vf_ports_fill(skb, dev); | |
835 | if (err) | |
836 | return err; | |
837 | } | |
838 | ||
839 | return 0; | |
840 | } | |
841 | ||
b60c5115 | 842 | static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev, |
575c3e2a PM |
843 | int type, u32 pid, u32 seq, u32 change, |
844 | unsigned int flags) | |
b60c5115 TG |
845 | { |
846 | struct ifinfomsg *ifm; | |
847 | struct nlmsghdr *nlh; | |
28172739 | 848 | struct rtnl_link_stats64 temp; |
be1f3c2c | 849 | const struct rtnl_link_stats64 *stats; |
f8ff182c TG |
850 | struct nlattr *attr, *af_spec; |
851 | struct rtnl_af_ops *af_ops; | |
1da177e4 | 852 | |
b60c5115 TG |
853 | nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ifm), flags); |
854 | if (nlh == NULL) | |
26932566 | 855 | return -EMSGSIZE; |
1da177e4 | 856 | |
b60c5115 TG |
857 | ifm = nlmsg_data(nlh); |
858 | ifm->ifi_family = AF_UNSPEC; | |
859 | ifm->__ifi_pad = 0; | |
860 | ifm->ifi_type = dev->type; | |
861 | ifm->ifi_index = dev->ifindex; | |
862 | ifm->ifi_flags = dev_get_flags(dev); | |
863 | ifm->ifi_change = change; | |
864 | ||
865 | NLA_PUT_STRING(skb, IFLA_IFNAME, dev->name); | |
866 | NLA_PUT_U32(skb, IFLA_TXQLEN, dev->tx_queue_len); | |
b60c5115 TG |
867 | NLA_PUT_U8(skb, IFLA_OPERSTATE, |
868 | netif_running(dev) ? dev->operstate : IF_OPER_DOWN); | |
869 | NLA_PUT_U8(skb, IFLA_LINKMODE, dev->link_mode); | |
870 | NLA_PUT_U32(skb, IFLA_MTU, dev->mtu); | |
cbda10fa | 871 | NLA_PUT_U32(skb, IFLA_GROUP, dev->group); |
b60c5115 TG |
872 | |
873 | if (dev->ifindex != dev->iflink) | |
874 | NLA_PUT_U32(skb, IFLA_LINK, dev->iflink); | |
875 | ||
876 | if (dev->master) | |
877 | NLA_PUT_U32(skb, IFLA_MASTER, dev->master->ifindex); | |
1da177e4 | 878 | |
af356afa PM |
879 | if (dev->qdisc) |
880 | NLA_PUT_STRING(skb, IFLA_QDISC, dev->qdisc->ops->id); | |
b00055aa | 881 | |
0b815a1a SH |
882 | if (dev->ifalias) |
883 | NLA_PUT_STRING(skb, IFLA_IFALIAS, dev->ifalias); | |
884 | ||
1da177e4 LT |
885 | if (1) { |
886 | struct rtnl_link_ifmap map = { | |
887 | .mem_start = dev->mem_start, | |
888 | .mem_end = dev->mem_end, | |
889 | .base_addr = dev->base_addr, | |
890 | .irq = dev->irq, | |
891 | .dma = dev->dma, | |
892 | .port = dev->if_port, | |
893 | }; | |
b60c5115 | 894 | NLA_PUT(skb, IFLA_MAP, sizeof(map), &map); |
1da177e4 LT |
895 | } |
896 | ||
897 | if (dev->addr_len) { | |
b60c5115 TG |
898 | NLA_PUT(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr); |
899 | NLA_PUT(skb, IFLA_BROADCAST, dev->addr_len, dev->broadcast); | |
1da177e4 LT |
900 | } |
901 | ||
96e74088 PE |
902 | attr = nla_reserve(skb, IFLA_STATS, |
903 | sizeof(struct rtnl_link_stats)); | |
904 | if (attr == NULL) | |
905 | goto nla_put_failure; | |
b60c5115 | 906 | |
28172739 | 907 | stats = dev_get_stats(dev, &temp); |
96e74088 | 908 | copy_rtnl_link_stats(nla_data(attr), stats); |
1da177e4 | 909 | |
10708f37 JE |
910 | attr = nla_reserve(skb, IFLA_STATS64, |
911 | sizeof(struct rtnl_link_stats64)); | |
912 | if (attr == NULL) | |
913 | goto nla_put_failure; | |
10708f37 JE |
914 | copy_rtnl_link_stats64(nla_data(attr), stats); |
915 | ||
57b61080 SF |
916 | if (dev->dev.parent) |
917 | NLA_PUT_U32(skb, IFLA_NUM_VF, dev_num_vf(dev->dev.parent)); | |
918 | ||
ebc08a6f WM |
919 | if (dev->netdev_ops->ndo_get_vf_config && dev->dev.parent) { |
920 | int i; | |
ebc08a6f | 921 | |
c02db8c6 CW |
922 | struct nlattr *vfinfo, *vf; |
923 | int num_vfs = dev_num_vf(dev->dev.parent); | |
924 | ||
c02db8c6 CW |
925 | vfinfo = nla_nest_start(skb, IFLA_VFINFO_LIST); |
926 | if (!vfinfo) | |
927 | goto nla_put_failure; | |
928 | for (i = 0; i < num_vfs; i++) { | |
929 | struct ifla_vf_info ivi; | |
930 | struct ifla_vf_mac vf_mac; | |
931 | struct ifla_vf_vlan vf_vlan; | |
932 | struct ifla_vf_tx_rate vf_tx_rate; | |
ebc08a6f WM |
933 | if (dev->netdev_ops->ndo_get_vf_config(dev, i, &ivi)) |
934 | break; | |
c02db8c6 CW |
935 | vf_mac.vf = vf_vlan.vf = vf_tx_rate.vf = ivi.vf; |
936 | memcpy(vf_mac.mac, ivi.mac, sizeof(ivi.mac)); | |
937 | vf_vlan.vlan = ivi.vlan; | |
938 | vf_vlan.qos = ivi.qos; | |
939 | vf_tx_rate.rate = ivi.tx_rate; | |
940 | vf = nla_nest_start(skb, IFLA_VF_INFO); | |
941 | if (!vf) { | |
942 | nla_nest_cancel(skb, vfinfo); | |
943 | goto nla_put_failure; | |
944 | } | |
945 | NLA_PUT(skb, IFLA_VF_MAC, sizeof(vf_mac), &vf_mac); | |
946 | NLA_PUT(skb, IFLA_VF_VLAN, sizeof(vf_vlan), &vf_vlan); | |
947 | NLA_PUT(skb, IFLA_VF_TX_RATE, sizeof(vf_tx_rate), &vf_tx_rate); | |
948 | nla_nest_end(skb, vf); | |
ebc08a6f | 949 | } |
c02db8c6 | 950 | nla_nest_end(skb, vfinfo); |
ebc08a6f | 951 | } |
57b61080 SF |
952 | |
953 | if (rtnl_port_fill(skb, dev)) | |
954 | goto nla_put_failure; | |
955 | ||
38f7b870 PM |
956 | if (dev->rtnl_link_ops) { |
957 | if (rtnl_link_fill(skb, dev) < 0) | |
958 | goto nla_put_failure; | |
959 | } | |
960 | ||
f8ff182c TG |
961 | if (!(af_spec = nla_nest_start(skb, IFLA_AF_SPEC))) |
962 | goto nla_put_failure; | |
963 | ||
964 | list_for_each_entry(af_ops, &rtnl_af_ops, list) { | |
965 | if (af_ops->fill_link_af) { | |
966 | struct nlattr *af; | |
967 | int err; | |
968 | ||
969 | if (!(af = nla_nest_start(skb, af_ops->family))) | |
970 | goto nla_put_failure; | |
971 | ||
972 | err = af_ops->fill_link_af(skb, dev); | |
973 | ||
974 | /* | |
975 | * Caller may return ENODATA to indicate that there | |
976 | * was no data to be dumped. This is not an error, it | |
977 | * means we should trim the attribute header and | |
978 | * continue. | |
979 | */ | |
980 | if (err == -ENODATA) | |
981 | nla_nest_cancel(skb, af); | |
982 | else if (err < 0) | |
983 | goto nla_put_failure; | |
984 | ||
985 | nla_nest_end(skb, af); | |
986 | } | |
987 | } | |
988 | ||
989 | nla_nest_end(skb, af_spec); | |
990 | ||
b60c5115 TG |
991 | return nlmsg_end(skb, nlh); |
992 | ||
993 | nla_put_failure: | |
26932566 PM |
994 | nlmsg_cancel(skb, nlh); |
995 | return -EMSGSIZE; | |
1da177e4 LT |
996 | } |
997 | ||
b60c5115 | 998 | static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb) |
1da177e4 | 999 | { |
3b1e0a65 | 1000 | struct net *net = sock_net(skb->sk); |
7c28bd0b ED |
1001 | int h, s_h; |
1002 | int idx = 0, s_idx; | |
1da177e4 | 1003 | struct net_device *dev; |
7c28bd0b ED |
1004 | struct hlist_head *head; |
1005 | struct hlist_node *node; | |
1006 | ||
1007 | s_h = cb->args[0]; | |
1008 | s_idx = cb->args[1]; | |
1009 | ||
1010 | for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) { | |
1011 | idx = 0; | |
1012 | head = &net->dev_index_head[h]; | |
1013 | hlist_for_each_entry(dev, node, head, index_hlist) { | |
1014 | if (idx < s_idx) | |
1015 | goto cont; | |
1016 | if (rtnl_fill_ifinfo(skb, dev, RTM_NEWLINK, | |
1017 | NETLINK_CB(cb->skb).pid, | |
1018 | cb->nlh->nlmsg_seq, 0, | |
1019 | NLM_F_MULTI) <= 0) | |
1020 | goto out; | |
7562f876 | 1021 | cont: |
7c28bd0b ED |
1022 | idx++; |
1023 | } | |
1da177e4 | 1024 | } |
7c28bd0b ED |
1025 | out: |
1026 | cb->args[1] = idx; | |
1027 | cb->args[0] = h; | |
1da177e4 LT |
1028 | |
1029 | return skb->len; | |
1030 | } | |
1031 | ||
e7199288 | 1032 | const struct nla_policy ifla_policy[IFLA_MAX+1] = { |
5176f91e | 1033 | [IFLA_IFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ-1 }, |
38f7b870 PM |
1034 | [IFLA_ADDRESS] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN }, |
1035 | [IFLA_BROADCAST] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN }, | |
5176f91e | 1036 | [IFLA_MAP] = { .len = sizeof(struct rtnl_link_ifmap) }, |
da5e0494 | 1037 | [IFLA_MTU] = { .type = NLA_U32 }, |
76e87306 | 1038 | [IFLA_LINK] = { .type = NLA_U32 }, |
da5e0494 TG |
1039 | [IFLA_TXQLEN] = { .type = NLA_U32 }, |
1040 | [IFLA_WEIGHT] = { .type = NLA_U32 }, | |
1041 | [IFLA_OPERSTATE] = { .type = NLA_U8 }, | |
1042 | [IFLA_LINKMODE] = { .type = NLA_U8 }, | |
76e87306 | 1043 | [IFLA_LINKINFO] = { .type = NLA_NESTED }, |
d8a5ec67 | 1044 | [IFLA_NET_NS_PID] = { .type = NLA_U32 }, |
0b815a1a | 1045 | [IFLA_IFALIAS] = { .type = NLA_STRING, .len = IFALIASZ-1 }, |
c02db8c6 | 1046 | [IFLA_VFINFO_LIST] = {. type = NLA_NESTED }, |
57b61080 SF |
1047 | [IFLA_VF_PORTS] = { .type = NLA_NESTED }, |
1048 | [IFLA_PORT_SELF] = { .type = NLA_NESTED }, | |
f8ff182c | 1049 | [IFLA_AF_SPEC] = { .type = NLA_NESTED }, |
da5e0494 | 1050 | }; |
e0d087af | 1051 | EXPORT_SYMBOL(ifla_policy); |
da5e0494 | 1052 | |
38f7b870 PM |
1053 | static const struct nla_policy ifla_info_policy[IFLA_INFO_MAX+1] = { |
1054 | [IFLA_INFO_KIND] = { .type = NLA_STRING }, | |
1055 | [IFLA_INFO_DATA] = { .type = NLA_NESTED }, | |
1056 | }; | |
1057 | ||
c02db8c6 CW |
1058 | static const struct nla_policy ifla_vfinfo_policy[IFLA_VF_INFO_MAX+1] = { |
1059 | [IFLA_VF_INFO] = { .type = NLA_NESTED }, | |
1060 | }; | |
1061 | ||
1062 | static const struct nla_policy ifla_vf_policy[IFLA_VF_MAX+1] = { | |
1063 | [IFLA_VF_MAC] = { .type = NLA_BINARY, | |
1064 | .len = sizeof(struct ifla_vf_mac) }, | |
1065 | [IFLA_VF_VLAN] = { .type = NLA_BINARY, | |
1066 | .len = sizeof(struct ifla_vf_vlan) }, | |
1067 | [IFLA_VF_TX_RATE] = { .type = NLA_BINARY, | |
1068 | .len = sizeof(struct ifla_vf_tx_rate) }, | |
1069 | }; | |
1070 | ||
57b61080 SF |
1071 | static const struct nla_policy ifla_port_policy[IFLA_PORT_MAX+1] = { |
1072 | [IFLA_PORT_VF] = { .type = NLA_U32 }, | |
1073 | [IFLA_PORT_PROFILE] = { .type = NLA_STRING, | |
1074 | .len = PORT_PROFILE_MAX }, | |
1075 | [IFLA_PORT_VSI_TYPE] = { .type = NLA_BINARY, | |
1076 | .len = sizeof(struct ifla_port_vsi)}, | |
1077 | [IFLA_PORT_INSTANCE_UUID] = { .type = NLA_BINARY, | |
1078 | .len = PORT_UUID_MAX }, | |
1079 | [IFLA_PORT_HOST_UUID] = { .type = NLA_STRING, | |
1080 | .len = PORT_UUID_MAX }, | |
1081 | [IFLA_PORT_REQUEST] = { .type = NLA_U8, }, | |
1082 | [IFLA_PORT_RESPONSE] = { .type = NLA_U16, }, | |
1083 | }; | |
1084 | ||
81adee47 EB |
1085 | struct net *rtnl_link_get_net(struct net *src_net, struct nlattr *tb[]) |
1086 | { | |
1087 | struct net *net; | |
1088 | /* Examine the link attributes and figure out which | |
1089 | * network namespace we are talking about. | |
1090 | */ | |
1091 | if (tb[IFLA_NET_NS_PID]) | |
1092 | net = get_net_ns_by_pid(nla_get_u32(tb[IFLA_NET_NS_PID])); | |
1093 | else | |
1094 | net = get_net(src_net); | |
1095 | return net; | |
1096 | } | |
1097 | EXPORT_SYMBOL(rtnl_link_get_net); | |
1098 | ||
1840bb13 TG |
1099 | static int validate_linkmsg(struct net_device *dev, struct nlattr *tb[]) |
1100 | { | |
1101 | if (dev) { | |
1102 | if (tb[IFLA_ADDRESS] && | |
1103 | nla_len(tb[IFLA_ADDRESS]) < dev->addr_len) | |
1104 | return -EINVAL; | |
1105 | ||
1106 | if (tb[IFLA_BROADCAST] && | |
1107 | nla_len(tb[IFLA_BROADCAST]) < dev->addr_len) | |
1108 | return -EINVAL; | |
1109 | } | |
1110 | ||
cf7afbfe TG |
1111 | if (tb[IFLA_AF_SPEC]) { |
1112 | struct nlattr *af; | |
1113 | int rem, err; | |
1114 | ||
1115 | nla_for_each_nested(af, tb[IFLA_AF_SPEC], rem) { | |
1116 | const struct rtnl_af_ops *af_ops; | |
1117 | ||
1118 | if (!(af_ops = rtnl_af_lookup(nla_type(af)))) | |
1119 | return -EAFNOSUPPORT; | |
1120 | ||
1121 | if (!af_ops->set_link_af) | |
1122 | return -EOPNOTSUPP; | |
1123 | ||
1124 | if (af_ops->validate_link_af) { | |
1125 | err = af_ops->validate_link_af(dev, | |
1126 | tb[IFLA_AF_SPEC]); | |
1127 | if (err < 0) | |
1128 | return err; | |
1129 | } | |
1130 | } | |
1131 | } | |
1132 | ||
1840bb13 TG |
1133 | return 0; |
1134 | } | |
1135 | ||
c02db8c6 CW |
1136 | static int do_setvfinfo(struct net_device *dev, struct nlattr *attr) |
1137 | { | |
1138 | int rem, err = -EINVAL; | |
1139 | struct nlattr *vf; | |
1140 | const struct net_device_ops *ops = dev->netdev_ops; | |
1141 | ||
1142 | nla_for_each_nested(vf, attr, rem) { | |
1143 | switch (nla_type(vf)) { | |
1144 | case IFLA_VF_MAC: { | |
1145 | struct ifla_vf_mac *ivm; | |
1146 | ivm = nla_data(vf); | |
1147 | err = -EOPNOTSUPP; | |
1148 | if (ops->ndo_set_vf_mac) | |
1149 | err = ops->ndo_set_vf_mac(dev, ivm->vf, | |
1150 | ivm->mac); | |
1151 | break; | |
1152 | } | |
1153 | case IFLA_VF_VLAN: { | |
1154 | struct ifla_vf_vlan *ivv; | |
1155 | ivv = nla_data(vf); | |
1156 | err = -EOPNOTSUPP; | |
1157 | if (ops->ndo_set_vf_vlan) | |
1158 | err = ops->ndo_set_vf_vlan(dev, ivv->vf, | |
1159 | ivv->vlan, | |
1160 | ivv->qos); | |
1161 | break; | |
1162 | } | |
1163 | case IFLA_VF_TX_RATE: { | |
1164 | struct ifla_vf_tx_rate *ivt; | |
1165 | ivt = nla_data(vf); | |
1166 | err = -EOPNOTSUPP; | |
1167 | if (ops->ndo_set_vf_tx_rate) | |
1168 | err = ops->ndo_set_vf_tx_rate(dev, ivt->vf, | |
1169 | ivt->rate); | |
1170 | break; | |
1171 | } | |
1172 | default: | |
1173 | err = -EINVAL; | |
1174 | break; | |
1175 | } | |
1176 | if (err) | |
1177 | break; | |
1178 | } | |
1179 | return err; | |
1180 | } | |
1181 | ||
0157f60c | 1182 | static int do_setlink(struct net_device *dev, struct ifinfomsg *ifm, |
38f7b870 | 1183 | struct nlattr **tb, char *ifname, int modified) |
1da177e4 | 1184 | { |
d314774c | 1185 | const struct net_device_ops *ops = dev->netdev_ops; |
38f7b870 | 1186 | int send_addr_notify = 0; |
0157f60c | 1187 | int err; |
1da177e4 | 1188 | |
d8a5ec67 | 1189 | if (tb[IFLA_NET_NS_PID]) { |
81adee47 | 1190 | struct net *net = rtnl_link_get_net(dev_net(dev), tb); |
d8a5ec67 EB |
1191 | if (IS_ERR(net)) { |
1192 | err = PTR_ERR(net); | |
1193 | goto errout; | |
1194 | } | |
1195 | err = dev_change_net_namespace(dev, net, ifname); | |
1196 | put_net(net); | |
1197 | if (err) | |
1198 | goto errout; | |
1199 | modified = 1; | |
1200 | } | |
1201 | ||
da5e0494 | 1202 | if (tb[IFLA_MAP]) { |
1da177e4 LT |
1203 | struct rtnl_link_ifmap *u_map; |
1204 | struct ifmap k_map; | |
1205 | ||
d314774c | 1206 | if (!ops->ndo_set_config) { |
1da177e4 | 1207 | err = -EOPNOTSUPP; |
0157f60c | 1208 | goto errout; |
1da177e4 LT |
1209 | } |
1210 | ||
1211 | if (!netif_device_present(dev)) { | |
1212 | err = -ENODEV; | |
0157f60c | 1213 | goto errout; |
1da177e4 | 1214 | } |
1da177e4 | 1215 | |
da5e0494 | 1216 | u_map = nla_data(tb[IFLA_MAP]); |
1da177e4 LT |
1217 | k_map.mem_start = (unsigned long) u_map->mem_start; |
1218 | k_map.mem_end = (unsigned long) u_map->mem_end; | |
1219 | k_map.base_addr = (unsigned short) u_map->base_addr; | |
1220 | k_map.irq = (unsigned char) u_map->irq; | |
1221 | k_map.dma = (unsigned char) u_map->dma; | |
1222 | k_map.port = (unsigned char) u_map->port; | |
1223 | ||
d314774c | 1224 | err = ops->ndo_set_config(dev, &k_map); |
da5e0494 | 1225 | if (err < 0) |
0157f60c | 1226 | goto errout; |
1da177e4 | 1227 | |
da5e0494 | 1228 | modified = 1; |
1da177e4 LT |
1229 | } |
1230 | ||
da5e0494 | 1231 | if (tb[IFLA_ADDRESS]) { |
70f8e78e DM |
1232 | struct sockaddr *sa; |
1233 | int len; | |
1234 | ||
d314774c | 1235 | if (!ops->ndo_set_mac_address) { |
1da177e4 | 1236 | err = -EOPNOTSUPP; |
0157f60c | 1237 | goto errout; |
1da177e4 | 1238 | } |
da5e0494 | 1239 | |
1da177e4 LT |
1240 | if (!netif_device_present(dev)) { |
1241 | err = -ENODEV; | |
0157f60c | 1242 | goto errout; |
1da177e4 | 1243 | } |
1da177e4 | 1244 | |
70f8e78e DM |
1245 | len = sizeof(sa_family_t) + dev->addr_len; |
1246 | sa = kmalloc(len, GFP_KERNEL); | |
1247 | if (!sa) { | |
1248 | err = -ENOMEM; | |
0157f60c | 1249 | goto errout; |
70f8e78e DM |
1250 | } |
1251 | sa->sa_family = dev->type; | |
da5e0494 | 1252 | memcpy(sa->sa_data, nla_data(tb[IFLA_ADDRESS]), |
70f8e78e | 1253 | dev->addr_len); |
d314774c | 1254 | err = ops->ndo_set_mac_address(dev, sa); |
70f8e78e | 1255 | kfree(sa); |
1da177e4 | 1256 | if (err) |
0157f60c | 1257 | goto errout; |
1da177e4 | 1258 | send_addr_notify = 1; |
da5e0494 | 1259 | modified = 1; |
1da177e4 LT |
1260 | } |
1261 | ||
da5e0494 TG |
1262 | if (tb[IFLA_MTU]) { |
1263 | err = dev_set_mtu(dev, nla_get_u32(tb[IFLA_MTU])); | |
1264 | if (err < 0) | |
0157f60c | 1265 | goto errout; |
da5e0494 | 1266 | modified = 1; |
1da177e4 LT |
1267 | } |
1268 | ||
cbda10fa VD |
1269 | if (tb[IFLA_GROUP]) { |
1270 | dev_set_group(dev, nla_get_u32(tb[IFLA_GROUP])); | |
1271 | modified = 1; | |
1272 | } | |
1273 | ||
da5e0494 TG |
1274 | /* |
1275 | * Interface selected by interface index but interface | |
1276 | * name provided implies that a name change has been | |
1277 | * requested. | |
1278 | */ | |
51055be8 | 1279 | if (ifm->ifi_index > 0 && ifname[0]) { |
da5e0494 TG |
1280 | err = dev_change_name(dev, ifname); |
1281 | if (err < 0) | |
0157f60c | 1282 | goto errout; |
da5e0494 | 1283 | modified = 1; |
1da177e4 LT |
1284 | } |
1285 | ||
0b815a1a SH |
1286 | if (tb[IFLA_IFALIAS]) { |
1287 | err = dev_set_alias(dev, nla_data(tb[IFLA_IFALIAS]), | |
1288 | nla_len(tb[IFLA_IFALIAS])); | |
1289 | if (err < 0) | |
1290 | goto errout; | |
1291 | modified = 1; | |
1292 | } | |
1293 | ||
da5e0494 TG |
1294 | if (tb[IFLA_BROADCAST]) { |
1295 | nla_memcpy(dev->broadcast, tb[IFLA_BROADCAST], dev->addr_len); | |
1296 | send_addr_notify = 1; | |
1da177e4 LT |
1297 | } |
1298 | ||
83b496e9 | 1299 | if (ifm->ifi_flags || ifm->ifi_change) { |
3729d502 | 1300 | err = dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm)); |
5f9021cf JB |
1301 | if (err < 0) |
1302 | goto errout; | |
83b496e9 | 1303 | } |
1da177e4 | 1304 | |
93b2d4a2 DM |
1305 | if (tb[IFLA_TXQLEN]) |
1306 | dev->tx_queue_len = nla_get_u32(tb[IFLA_TXQLEN]); | |
b00055aa | 1307 | |
da5e0494 | 1308 | if (tb[IFLA_OPERSTATE]) |
93b2d4a2 | 1309 | set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE])); |
b00055aa | 1310 | |
da5e0494 | 1311 | if (tb[IFLA_LINKMODE]) { |
93b2d4a2 DM |
1312 | write_lock_bh(&dev_base_lock); |
1313 | dev->link_mode = nla_get_u8(tb[IFLA_LINKMODE]); | |
1314 | write_unlock_bh(&dev_base_lock); | |
b00055aa SR |
1315 | } |
1316 | ||
c02db8c6 CW |
1317 | if (tb[IFLA_VFINFO_LIST]) { |
1318 | struct nlattr *attr; | |
1319 | int rem; | |
1320 | nla_for_each_nested(attr, tb[IFLA_VFINFO_LIST], rem) { | |
253683bb DH |
1321 | if (nla_type(attr) != IFLA_VF_INFO) { |
1322 | err = -EINVAL; | |
c02db8c6 | 1323 | goto errout; |
253683bb | 1324 | } |
c02db8c6 CW |
1325 | err = do_setvfinfo(dev, attr); |
1326 | if (err < 0) | |
1327 | goto errout; | |
1328 | modified = 1; | |
1329 | } | |
ebc08a6f | 1330 | } |
1da177e4 LT |
1331 | err = 0; |
1332 | ||
57b61080 SF |
1333 | if (tb[IFLA_VF_PORTS]) { |
1334 | struct nlattr *port[IFLA_PORT_MAX+1]; | |
1335 | struct nlattr *attr; | |
1336 | int vf; | |
1337 | int rem; | |
1338 | ||
1339 | err = -EOPNOTSUPP; | |
1340 | if (!ops->ndo_set_vf_port) | |
1341 | goto errout; | |
1342 | ||
1343 | nla_for_each_nested(attr, tb[IFLA_VF_PORTS], rem) { | |
1344 | if (nla_type(attr) != IFLA_VF_PORT) | |
1345 | continue; | |
1346 | err = nla_parse_nested(port, IFLA_PORT_MAX, | |
1347 | attr, ifla_port_policy); | |
1348 | if (err < 0) | |
1349 | goto errout; | |
1350 | if (!port[IFLA_PORT_VF]) { | |
1351 | err = -EOPNOTSUPP; | |
1352 | goto errout; | |
1353 | } | |
1354 | vf = nla_get_u32(port[IFLA_PORT_VF]); | |
1355 | err = ops->ndo_set_vf_port(dev, vf, port); | |
1356 | if (err < 0) | |
1357 | goto errout; | |
1358 | modified = 1; | |
1359 | } | |
1360 | } | |
1361 | err = 0; | |
1362 | ||
1363 | if (tb[IFLA_PORT_SELF]) { | |
1364 | struct nlattr *port[IFLA_PORT_MAX+1]; | |
1365 | ||
1366 | err = nla_parse_nested(port, IFLA_PORT_MAX, | |
1367 | tb[IFLA_PORT_SELF], ifla_port_policy); | |
1368 | if (err < 0) | |
1369 | goto errout; | |
1370 | ||
1371 | err = -EOPNOTSUPP; | |
1372 | if (ops->ndo_set_vf_port) | |
1373 | err = ops->ndo_set_vf_port(dev, PORT_SELF_VF, port); | |
1374 | if (err < 0) | |
1375 | goto errout; | |
1376 | modified = 1; | |
1377 | } | |
f8ff182c TG |
1378 | |
1379 | if (tb[IFLA_AF_SPEC]) { | |
1380 | struct nlattr *af; | |
1381 | int rem; | |
1382 | ||
1383 | nla_for_each_nested(af, tb[IFLA_AF_SPEC], rem) { | |
1384 | const struct rtnl_af_ops *af_ops; | |
1385 | ||
1386 | if (!(af_ops = rtnl_af_lookup(nla_type(af)))) | |
cf7afbfe | 1387 | BUG(); |
f8ff182c | 1388 | |
cf7afbfe | 1389 | err = af_ops->set_link_af(dev, af); |
f8ff182c TG |
1390 | if (err < 0) |
1391 | goto errout; | |
1392 | ||
1393 | modified = 1; | |
1394 | } | |
1395 | } | |
57b61080 SF |
1396 | err = 0; |
1397 | ||
0157f60c | 1398 | errout: |
da5e0494 TG |
1399 | if (err < 0 && modified && net_ratelimit()) |
1400 | printk(KERN_WARNING "A link change request failed with " | |
1401 | "some changes comitted already. Interface %s may " | |
1402 | "have been left with an inconsistent configuration, " | |
1403 | "please check.\n", dev->name); | |
1404 | ||
1da177e4 LT |
1405 | if (send_addr_notify) |
1406 | call_netdevice_notifiers(NETDEV_CHANGEADDR, dev); | |
0157f60c PM |
1407 | return err; |
1408 | } | |
1da177e4 | 1409 | |
0157f60c PM |
1410 | static int rtnl_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) |
1411 | { | |
3b1e0a65 | 1412 | struct net *net = sock_net(skb->sk); |
0157f60c PM |
1413 | struct ifinfomsg *ifm; |
1414 | struct net_device *dev; | |
1415 | int err; | |
1416 | struct nlattr *tb[IFLA_MAX+1]; | |
1417 | char ifname[IFNAMSIZ]; | |
1418 | ||
1419 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); | |
1420 | if (err < 0) | |
1421 | goto errout; | |
1422 | ||
1423 | if (tb[IFLA_IFNAME]) | |
1424 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
1425 | else | |
1426 | ifname[0] = '\0'; | |
1427 | ||
1428 | err = -EINVAL; | |
1429 | ifm = nlmsg_data(nlh); | |
1430 | if (ifm->ifi_index > 0) | |
a3d12891 | 1431 | dev = __dev_get_by_index(net, ifm->ifi_index); |
0157f60c | 1432 | else if (tb[IFLA_IFNAME]) |
a3d12891 | 1433 | dev = __dev_get_by_name(net, ifname); |
0157f60c PM |
1434 | else |
1435 | goto errout; | |
1436 | ||
1437 | if (dev == NULL) { | |
1438 | err = -ENODEV; | |
1439 | goto errout; | |
1440 | } | |
1441 | ||
e0d087af ED |
1442 | err = validate_linkmsg(dev, tb); |
1443 | if (err < 0) | |
a3d12891 | 1444 | goto errout; |
0157f60c | 1445 | |
38f7b870 | 1446 | err = do_setlink(dev, ifm, tb, ifname, 0); |
da5e0494 | 1447 | errout: |
1da177e4 LT |
1448 | return err; |
1449 | } | |
1450 | ||
38f7b870 PM |
1451 | static int rtnl_dellink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) |
1452 | { | |
3b1e0a65 | 1453 | struct net *net = sock_net(skb->sk); |
38f7b870 PM |
1454 | const struct rtnl_link_ops *ops; |
1455 | struct net_device *dev; | |
1456 | struct ifinfomsg *ifm; | |
1457 | char ifname[IFNAMSIZ]; | |
1458 | struct nlattr *tb[IFLA_MAX+1]; | |
1459 | int err; | |
1460 | ||
1461 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); | |
1462 | if (err < 0) | |
1463 | return err; | |
1464 | ||
1465 | if (tb[IFLA_IFNAME]) | |
1466 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
1467 | ||
1468 | ifm = nlmsg_data(nlh); | |
1469 | if (ifm->ifi_index > 0) | |
881d966b | 1470 | dev = __dev_get_by_index(net, ifm->ifi_index); |
38f7b870 | 1471 | else if (tb[IFLA_IFNAME]) |
881d966b | 1472 | dev = __dev_get_by_name(net, ifname); |
38f7b870 PM |
1473 | else |
1474 | return -EINVAL; | |
1475 | ||
1476 | if (!dev) | |
1477 | return -ENODEV; | |
1478 | ||
1479 | ops = dev->rtnl_link_ops; | |
1480 | if (!ops) | |
1481 | return -EOPNOTSUPP; | |
1482 | ||
23289a37 | 1483 | ops->dellink(dev, NULL); |
38f7b870 PM |
1484 | return 0; |
1485 | } | |
1486 | ||
3729d502 PM |
1487 | int rtnl_configure_link(struct net_device *dev, const struct ifinfomsg *ifm) |
1488 | { | |
1489 | unsigned int old_flags; | |
1490 | int err; | |
1491 | ||
1492 | old_flags = dev->flags; | |
1493 | if (ifm && (ifm->ifi_flags || ifm->ifi_change)) { | |
1494 | err = __dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm)); | |
1495 | if (err < 0) | |
1496 | return err; | |
1497 | } | |
1498 | ||
1499 | dev->rtnl_link_state = RTNL_LINK_INITIALIZED; | |
1500 | rtmsg_ifinfo(RTM_NEWLINK, dev, ~0U); | |
1501 | ||
1502 | __dev_notify_flags(dev, old_flags); | |
1503 | return 0; | |
1504 | } | |
1505 | EXPORT_SYMBOL(rtnl_configure_link); | |
1506 | ||
81adee47 EB |
1507 | struct net_device *rtnl_create_link(struct net *src_net, struct net *net, |
1508 | char *ifname, const struct rtnl_link_ops *ops, struct nlattr *tb[]) | |
e7199288 PE |
1509 | { |
1510 | int err; | |
1511 | struct net_device *dev; | |
2e59af3d ED |
1512 | unsigned int num_queues = 1; |
1513 | unsigned int real_num_queues = 1; | |
e7199288 | 1514 | |
2e59af3d | 1515 | if (ops->get_tx_queues) { |
81adee47 | 1516 | err = ops->get_tx_queues(src_net, tb, &num_queues, |
e0d087af | 1517 | &real_num_queues); |
2e59af3d ED |
1518 | if (err) |
1519 | goto err; | |
1520 | } | |
e7199288 | 1521 | err = -ENOMEM; |
2e59af3d | 1522 | dev = alloc_netdev_mq(ops->priv_size, ifname, ops->setup, num_queues); |
e7199288 PE |
1523 | if (!dev) |
1524 | goto err; | |
1525 | ||
81adee47 EB |
1526 | dev_net_set(dev, net); |
1527 | dev->rtnl_link_ops = ops; | |
3729d502 | 1528 | dev->rtnl_link_state = RTNL_LINK_INITIALIZING; |
2e59af3d | 1529 | dev->real_num_tx_queues = real_num_queues; |
81adee47 | 1530 | |
e7199288 PE |
1531 | if (strchr(dev->name, '%')) { |
1532 | err = dev_alloc_name(dev, dev->name); | |
1533 | if (err < 0) | |
1534 | goto err_free; | |
1535 | } | |
1536 | ||
e7199288 PE |
1537 | if (tb[IFLA_MTU]) |
1538 | dev->mtu = nla_get_u32(tb[IFLA_MTU]); | |
1539 | if (tb[IFLA_ADDRESS]) | |
1540 | memcpy(dev->dev_addr, nla_data(tb[IFLA_ADDRESS]), | |
1541 | nla_len(tb[IFLA_ADDRESS])); | |
1542 | if (tb[IFLA_BROADCAST]) | |
1543 | memcpy(dev->broadcast, nla_data(tb[IFLA_BROADCAST]), | |
1544 | nla_len(tb[IFLA_BROADCAST])); | |
1545 | if (tb[IFLA_TXQLEN]) | |
1546 | dev->tx_queue_len = nla_get_u32(tb[IFLA_TXQLEN]); | |
1547 | if (tb[IFLA_OPERSTATE]) | |
93b2d4a2 | 1548 | set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE])); |
e7199288 PE |
1549 | if (tb[IFLA_LINKMODE]) |
1550 | dev->link_mode = nla_get_u8(tb[IFLA_LINKMODE]); | |
1551 | ||
1552 | return dev; | |
1553 | ||
1554 | err_free: | |
1555 | free_netdev(dev); | |
1556 | err: | |
1557 | return ERR_PTR(err); | |
1558 | } | |
e0d087af | 1559 | EXPORT_SYMBOL(rtnl_create_link); |
e7199288 | 1560 | |
38f7b870 PM |
1561 | static int rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) |
1562 | { | |
3b1e0a65 | 1563 | struct net *net = sock_net(skb->sk); |
38f7b870 PM |
1564 | const struct rtnl_link_ops *ops; |
1565 | struct net_device *dev; | |
1566 | struct ifinfomsg *ifm; | |
1567 | char kind[MODULE_NAME_LEN]; | |
1568 | char ifname[IFNAMSIZ]; | |
1569 | struct nlattr *tb[IFLA_MAX+1]; | |
1570 | struct nlattr *linkinfo[IFLA_INFO_MAX+1]; | |
1571 | int err; | |
1572 | ||
95a5afca | 1573 | #ifdef CONFIG_MODULES |
38f7b870 | 1574 | replay: |
8072f085 | 1575 | #endif |
38f7b870 PM |
1576 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); |
1577 | if (err < 0) | |
1578 | return err; | |
1579 | ||
1580 | if (tb[IFLA_IFNAME]) | |
1581 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
1582 | else | |
1583 | ifname[0] = '\0'; | |
1584 | ||
1585 | ifm = nlmsg_data(nlh); | |
1586 | if (ifm->ifi_index > 0) | |
881d966b | 1587 | dev = __dev_get_by_index(net, ifm->ifi_index); |
38f7b870 | 1588 | else if (ifname[0]) |
881d966b | 1589 | dev = __dev_get_by_name(net, ifname); |
38f7b870 PM |
1590 | else |
1591 | dev = NULL; | |
1592 | ||
e0d087af ED |
1593 | err = validate_linkmsg(dev, tb); |
1594 | if (err < 0) | |
1840bb13 TG |
1595 | return err; |
1596 | ||
38f7b870 PM |
1597 | if (tb[IFLA_LINKINFO]) { |
1598 | err = nla_parse_nested(linkinfo, IFLA_INFO_MAX, | |
1599 | tb[IFLA_LINKINFO], ifla_info_policy); | |
1600 | if (err < 0) | |
1601 | return err; | |
1602 | } else | |
1603 | memset(linkinfo, 0, sizeof(linkinfo)); | |
1604 | ||
1605 | if (linkinfo[IFLA_INFO_KIND]) { | |
1606 | nla_strlcpy(kind, linkinfo[IFLA_INFO_KIND], sizeof(kind)); | |
1607 | ops = rtnl_link_ops_get(kind); | |
1608 | } else { | |
1609 | kind[0] = '\0'; | |
1610 | ops = NULL; | |
1611 | } | |
1612 | ||
1613 | if (1) { | |
1614 | struct nlattr *attr[ops ? ops->maxtype + 1 : 0], **data = NULL; | |
81adee47 | 1615 | struct net *dest_net; |
38f7b870 PM |
1616 | |
1617 | if (ops) { | |
1618 | if (ops->maxtype && linkinfo[IFLA_INFO_DATA]) { | |
1619 | err = nla_parse_nested(attr, ops->maxtype, | |
1620 | linkinfo[IFLA_INFO_DATA], | |
1621 | ops->policy); | |
1622 | if (err < 0) | |
1623 | return err; | |
1624 | data = attr; | |
1625 | } | |
1626 | if (ops->validate) { | |
1627 | err = ops->validate(tb, data); | |
1628 | if (err < 0) | |
1629 | return err; | |
1630 | } | |
1631 | } | |
1632 | ||
1633 | if (dev) { | |
1634 | int modified = 0; | |
1635 | ||
1636 | if (nlh->nlmsg_flags & NLM_F_EXCL) | |
1637 | return -EEXIST; | |
1638 | if (nlh->nlmsg_flags & NLM_F_REPLACE) | |
1639 | return -EOPNOTSUPP; | |
1640 | ||
1641 | if (linkinfo[IFLA_INFO_DATA]) { | |
1642 | if (!ops || ops != dev->rtnl_link_ops || | |
1643 | !ops->changelink) | |
1644 | return -EOPNOTSUPP; | |
1645 | ||
1646 | err = ops->changelink(dev, tb, data); | |
1647 | if (err < 0) | |
1648 | return err; | |
1649 | modified = 1; | |
1650 | } | |
1651 | ||
1652 | return do_setlink(dev, ifm, tb, ifname, modified); | |
1653 | } | |
1654 | ||
1655 | if (!(nlh->nlmsg_flags & NLM_F_CREATE)) | |
1656 | return -ENODEV; | |
1657 | ||
3729d502 | 1658 | if (ifm->ifi_index) |
38f7b870 | 1659 | return -EOPNOTSUPP; |
0e06877c | 1660 | if (tb[IFLA_MAP] || tb[IFLA_MASTER] || tb[IFLA_PROTINFO]) |
38f7b870 PM |
1661 | return -EOPNOTSUPP; |
1662 | ||
1663 | if (!ops) { | |
95a5afca | 1664 | #ifdef CONFIG_MODULES |
38f7b870 PM |
1665 | if (kind[0]) { |
1666 | __rtnl_unlock(); | |
1667 | request_module("rtnl-link-%s", kind); | |
1668 | rtnl_lock(); | |
1669 | ops = rtnl_link_ops_get(kind); | |
1670 | if (ops) | |
1671 | goto replay; | |
1672 | } | |
1673 | #endif | |
1674 | return -EOPNOTSUPP; | |
1675 | } | |
1676 | ||
1677 | if (!ifname[0]) | |
1678 | snprintf(ifname, IFNAMSIZ, "%s%%d", ops->kind); | |
e7199288 | 1679 | |
81adee47 EB |
1680 | dest_net = rtnl_link_get_net(net, tb); |
1681 | dev = rtnl_create_link(net, dest_net, ifname, ops, tb); | |
e7199288 PE |
1682 | |
1683 | if (IS_ERR(dev)) | |
1684 | err = PTR_ERR(dev); | |
1685 | else if (ops->newlink) | |
81adee47 | 1686 | err = ops->newlink(net, dev, tb, data); |
2d85cba2 PM |
1687 | else |
1688 | err = register_netdevice(dev); | |
80032cff DC |
1689 | |
1690 | if (err < 0 && !IS_ERR(dev)) | |
38f7b870 | 1691 | free_netdev(dev); |
80032cff | 1692 | if (err < 0) |
3729d502 | 1693 | goto out; |
81adee47 | 1694 | |
3729d502 PM |
1695 | err = rtnl_configure_link(dev, ifm); |
1696 | if (err < 0) | |
1697 | unregister_netdevice(dev); | |
1698 | out: | |
81adee47 | 1699 | put_net(dest_net); |
38f7b870 PM |
1700 | return err; |
1701 | } | |
1702 | } | |
1703 | ||
b60c5115 | 1704 | static int rtnl_getlink(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg) |
711e2c33 | 1705 | { |
3b1e0a65 | 1706 | struct net *net = sock_net(skb->sk); |
b60c5115 | 1707 | struct ifinfomsg *ifm; |
a3d12891 | 1708 | char ifname[IFNAMSIZ]; |
b60c5115 TG |
1709 | struct nlattr *tb[IFLA_MAX+1]; |
1710 | struct net_device *dev = NULL; | |
1711 | struct sk_buff *nskb; | |
339bf98f | 1712 | int err; |
711e2c33 | 1713 | |
b60c5115 TG |
1714 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); |
1715 | if (err < 0) | |
9918f230 | 1716 | return err; |
b60c5115 | 1717 | |
a3d12891 ED |
1718 | if (tb[IFLA_IFNAME]) |
1719 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
1720 | ||
b60c5115 | 1721 | ifm = nlmsg_data(nlh); |
a3d12891 ED |
1722 | if (ifm->ifi_index > 0) |
1723 | dev = __dev_get_by_index(net, ifm->ifi_index); | |
1724 | else if (tb[IFLA_IFNAME]) | |
1725 | dev = __dev_get_by_name(net, ifname); | |
1726 | else | |
711e2c33 | 1727 | return -EINVAL; |
711e2c33 | 1728 | |
a3d12891 ED |
1729 | if (dev == NULL) |
1730 | return -ENODEV; | |
1731 | ||
38f7b870 | 1732 | nskb = nlmsg_new(if_nlmsg_size(dev), GFP_KERNEL); |
a3d12891 ED |
1733 | if (nskb == NULL) |
1734 | return -ENOBUFS; | |
b60c5115 | 1735 | |
575c3e2a PM |
1736 | err = rtnl_fill_ifinfo(nskb, dev, RTM_NEWLINK, NETLINK_CB(skb).pid, |
1737 | nlh->nlmsg_seq, 0, 0); | |
26932566 PM |
1738 | if (err < 0) { |
1739 | /* -EMSGSIZE implies BUG in if_nlmsg_size */ | |
1740 | WARN_ON(err == -EMSGSIZE); | |
1741 | kfree_skb(nskb); | |
a3d12891 ED |
1742 | } else |
1743 | err = rtnl_unicast(nskb, net, NETLINK_CB(skb).pid); | |
711e2c33 | 1744 | |
b60c5115 | 1745 | return err; |
711e2c33 | 1746 | } |
711e2c33 | 1747 | |
42bad1da | 1748 | static int rtnl_dump_all(struct sk_buff *skb, struct netlink_callback *cb) |
1da177e4 LT |
1749 | { |
1750 | int idx; | |
1751 | int s_idx = cb->family; | |
1752 | ||
1753 | if (s_idx == 0) | |
1754 | s_idx = 1; | |
25239cee | 1755 | for (idx = 1; idx <= RTNL_FAMILY_MAX; idx++) { |
1da177e4 LT |
1756 | int type = cb->nlh->nlmsg_type-RTM_BASE; |
1757 | if (idx < s_idx || idx == PF_PACKET) | |
1758 | continue; | |
e2849863 TG |
1759 | if (rtnl_msg_handlers[idx] == NULL || |
1760 | rtnl_msg_handlers[idx][type].dumpit == NULL) | |
1da177e4 LT |
1761 | continue; |
1762 | if (idx > s_idx) | |
1763 | memset(&cb->args[0], 0, sizeof(cb->args)); | |
e2849863 | 1764 | if (rtnl_msg_handlers[idx][type].dumpit(skb, cb)) |
1da177e4 LT |
1765 | break; |
1766 | } | |
1767 | cb->family = idx; | |
1768 | ||
1769 | return skb->len; | |
1770 | } | |
1771 | ||
1772 | void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change) | |
1773 | { | |
c346dca1 | 1774 | struct net *net = dev_net(dev); |
1da177e4 | 1775 | struct sk_buff *skb; |
0ec6d3f4 | 1776 | int err = -ENOBUFS; |
1da177e4 | 1777 | |
38f7b870 | 1778 | skb = nlmsg_new(if_nlmsg_size(dev), GFP_KERNEL); |
0ec6d3f4 TG |
1779 | if (skb == NULL) |
1780 | goto errout; | |
1da177e4 | 1781 | |
575c3e2a | 1782 | err = rtnl_fill_ifinfo(skb, dev, type, 0, 0, change, 0); |
26932566 PM |
1783 | if (err < 0) { |
1784 | /* -EMSGSIZE implies BUG in if_nlmsg_size() */ | |
1785 | WARN_ON(err == -EMSGSIZE); | |
1786 | kfree_skb(skb); | |
1787 | goto errout; | |
1788 | } | |
1ce85fe4 PNA |
1789 | rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_KERNEL); |
1790 | return; | |
0ec6d3f4 TG |
1791 | errout: |
1792 | if (err < 0) | |
4b3da706 | 1793 | rtnl_set_sk_err(net, RTNLGRP_LINK, err); |
1da177e4 LT |
1794 | } |
1795 | ||
1da177e4 LT |
1796 | /* Protected by RTNL sempahore. */ |
1797 | static struct rtattr **rta_buf; | |
1798 | static int rtattr_max; | |
1799 | ||
1800 | /* Process one rtnetlink message. */ | |
1801 | ||
1d00a4eb | 1802 | static int rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh) |
1da177e4 | 1803 | { |
3b1e0a65 | 1804 | struct net *net = sock_net(skb->sk); |
e2849863 | 1805 | rtnl_doit_func doit; |
1da177e4 LT |
1806 | int sz_idx, kind; |
1807 | int min_len; | |
1808 | int family; | |
1809 | int type; | |
1c2d670f | 1810 | int err; |
1da177e4 | 1811 | |
1da177e4 | 1812 | type = nlh->nlmsg_type; |
1da177e4 | 1813 | if (type > RTM_MAX) |
038890fe | 1814 | return -EOPNOTSUPP; |
1da177e4 LT |
1815 | |
1816 | type -= RTM_BASE; | |
1817 | ||
1818 | /* All the messages must have at least 1 byte length */ | |
1819 | if (nlh->nlmsg_len < NLMSG_LENGTH(sizeof(struct rtgenmsg))) | |
1820 | return 0; | |
1821 | ||
e0d087af | 1822 | family = ((struct rtgenmsg *)NLMSG_DATA(nlh))->rtgen_family; |
1da177e4 LT |
1823 | sz_idx = type>>2; |
1824 | kind = type&3; | |
1825 | ||
1d00a4eb TG |
1826 | if (kind != 2 && security_netlink_recv(skb, CAP_NET_ADMIN)) |
1827 | return -EPERM; | |
1da177e4 | 1828 | |
0ab03c2b | 1829 | if (kind == 2 && (nlh->nlmsg_flags & NLM_F_DUMP) == NLM_F_DUMP) { |
97c53cac | 1830 | struct sock *rtnl; |
e2849863 | 1831 | rtnl_dumpit_func dumpit; |
1da177e4 | 1832 | |
e2849863 TG |
1833 | dumpit = rtnl_get_dumpit(family, type); |
1834 | if (dumpit == NULL) | |
038890fe | 1835 | return -EOPNOTSUPP; |
9ac4a169 | 1836 | |
1c2d670f | 1837 | __rtnl_unlock(); |
97c53cac | 1838 | rtnl = net->rtnl; |
1c2d670f PM |
1839 | err = netlink_dump_start(rtnl, skb, nlh, dumpit, NULL); |
1840 | rtnl_lock(); | |
1841 | return err; | |
1da177e4 LT |
1842 | } |
1843 | ||
1844 | memset(rta_buf, 0, (rtattr_max * sizeof(struct rtattr *))); | |
1845 | ||
1846 | min_len = rtm_min[sz_idx]; | |
1847 | if (nlh->nlmsg_len < min_len) | |
1d00a4eb | 1848 | return -EINVAL; |
1da177e4 LT |
1849 | |
1850 | if (nlh->nlmsg_len > min_len) { | |
1851 | int attrlen = nlh->nlmsg_len - NLMSG_ALIGN(min_len); | |
e0d087af | 1852 | struct rtattr *attr = (void *)nlh + NLMSG_ALIGN(min_len); |
1da177e4 LT |
1853 | |
1854 | while (RTA_OK(attr, attrlen)) { | |
1855 | unsigned flavor = attr->rta_type; | |
1856 | if (flavor) { | |
1857 | if (flavor > rta_max[sz_idx]) | |
1d00a4eb | 1858 | return -EINVAL; |
1da177e4 LT |
1859 | rta_buf[flavor-1] = attr; |
1860 | } | |
1861 | attr = RTA_NEXT(attr, attrlen); | |
1862 | } | |
1863 | } | |
1864 | ||
e2849863 TG |
1865 | doit = rtnl_get_doit(family, type); |
1866 | if (doit == NULL) | |
038890fe | 1867 | return -EOPNOTSUPP; |
1da177e4 | 1868 | |
1d00a4eb | 1869 | return doit(skb, nlh, (void *)&rta_buf[0]); |
1da177e4 LT |
1870 | } |
1871 | ||
cd40b7d3 | 1872 | static void rtnetlink_rcv(struct sk_buff *skb) |
1da177e4 | 1873 | { |
cd40b7d3 DL |
1874 | rtnl_lock(); |
1875 | netlink_rcv_skb(skb, &rtnetlink_rcv_msg); | |
1876 | rtnl_unlock(); | |
1da177e4 LT |
1877 | } |
1878 | ||
1da177e4 LT |
1879 | static int rtnetlink_event(struct notifier_block *this, unsigned long event, void *ptr) |
1880 | { | |
1881 | struct net_device *dev = ptr; | |
e9dc8653 | 1882 | |
1da177e4 | 1883 | switch (event) { |
1da177e4 LT |
1884 | case NETDEV_UP: |
1885 | case NETDEV_DOWN: | |
10de05af | 1886 | case NETDEV_PRE_UP: |
d90a909e EB |
1887 | case NETDEV_POST_INIT: |
1888 | case NETDEV_REGISTER: | |
1da177e4 | 1889 | case NETDEV_CHANGE: |
755d0e77 | 1890 | case NETDEV_PRE_TYPE_CHANGE: |
1da177e4 | 1891 | case NETDEV_GOING_DOWN: |
a2835763 | 1892 | case NETDEV_UNREGISTER: |
d90a909e | 1893 | case NETDEV_UNREGISTER_BATCH: |
1da177e4 LT |
1894 | break; |
1895 | default: | |
1896 | rtmsg_ifinfo(RTM_NEWLINK, dev, 0); | |
1897 | break; | |
1898 | } | |
1899 | return NOTIFY_DONE; | |
1900 | } | |
1901 | ||
1902 | static struct notifier_block rtnetlink_dev_notifier = { | |
1903 | .notifier_call = rtnetlink_event, | |
1904 | }; | |
1905 | ||
97c53cac | 1906 | |
2c8c1e72 | 1907 | static int __net_init rtnetlink_net_init(struct net *net) |
97c53cac DL |
1908 | { |
1909 | struct sock *sk; | |
1910 | sk = netlink_kernel_create(net, NETLINK_ROUTE, RTNLGRP_MAX, | |
1911 | rtnetlink_rcv, &rtnl_mutex, THIS_MODULE); | |
1912 | if (!sk) | |
1913 | return -ENOMEM; | |
97c53cac DL |
1914 | net->rtnl = sk; |
1915 | return 0; | |
1916 | } | |
1917 | ||
2c8c1e72 | 1918 | static void __net_exit rtnetlink_net_exit(struct net *net) |
97c53cac | 1919 | { |
775516bf DL |
1920 | netlink_kernel_release(net->rtnl); |
1921 | net->rtnl = NULL; | |
97c53cac DL |
1922 | } |
1923 | ||
1924 | static struct pernet_operations rtnetlink_net_ops = { | |
1925 | .init = rtnetlink_net_init, | |
1926 | .exit = rtnetlink_net_exit, | |
1927 | }; | |
1928 | ||
1da177e4 LT |
1929 | void __init rtnetlink_init(void) |
1930 | { | |
1931 | int i; | |
1932 | ||
1933 | rtattr_max = 0; | |
1934 | for (i = 0; i < ARRAY_SIZE(rta_max); i++) | |
1935 | if (rta_max[i] > rtattr_max) | |
1936 | rtattr_max = rta_max[i]; | |
1937 | rta_buf = kmalloc(rtattr_max * sizeof(struct rtattr *), GFP_KERNEL); | |
1938 | if (!rta_buf) | |
1939 | panic("rtnetlink_init: cannot allocate rta_buf\n"); | |
1940 | ||
97c53cac | 1941 | if (register_pernet_subsys(&rtnetlink_net_ops)) |
1da177e4 | 1942 | panic("rtnetlink_init: cannot initialize rtnetlink\n"); |
97c53cac | 1943 | |
1da177e4 LT |
1944 | netlink_set_nonroot(NETLINK_ROUTE, NL_NONROOT_RECV); |
1945 | register_netdevice_notifier(&rtnetlink_dev_notifier); | |
340d17fc TG |
1946 | |
1947 | rtnl_register(PF_UNSPEC, RTM_GETLINK, rtnl_getlink, rtnl_dump_ifinfo); | |
1948 | rtnl_register(PF_UNSPEC, RTM_SETLINK, rtnl_setlink, NULL); | |
38f7b870 PM |
1949 | rtnl_register(PF_UNSPEC, RTM_NEWLINK, rtnl_newlink, NULL); |
1950 | rtnl_register(PF_UNSPEC, RTM_DELLINK, rtnl_dellink, NULL); | |
687ad8cc TG |
1951 | |
1952 | rtnl_register(PF_UNSPEC, RTM_GETADDR, NULL, rtnl_dump_all); | |
1953 | rtnl_register(PF_UNSPEC, RTM_GETROUTE, NULL, rtnl_dump_all); | |
1da177e4 LT |
1954 | } |
1955 |