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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> |
77162022 | 38 | #include <linux/if_bridge.h> |
ebc08a6f | 39 | #include <linux/pci.h> |
77162022 | 40 | #include <linux/etherdevice.h> |
1da177e4 LT |
41 | |
42 | #include <asm/uaccess.h> | |
1da177e4 LT |
43 | |
44 | #include <linux/inet.h> | |
45 | #include <linux/netdevice.h> | |
46 | #include <net/ip.h> | |
47 | #include <net/protocol.h> | |
48 | #include <net/arp.h> | |
49 | #include <net/route.h> | |
50 | #include <net/udp.h> | |
51 | #include <net/sock.h> | |
52 | #include <net/pkt_sched.h> | |
14c0b97d | 53 | #include <net/fib_rules.h> |
e2849863 | 54 | #include <net/rtnetlink.h> |
30ffee84 | 55 | #include <net/net_namespace.h> |
1da177e4 | 56 | |
e0d087af | 57 | struct rtnl_link { |
e2849863 TG |
58 | rtnl_doit_func doit; |
59 | rtnl_dumpit_func dumpit; | |
c7ac8679 | 60 | rtnl_calcit_func calcit; |
e2849863 TG |
61 | }; |
62 | ||
6756ae4b | 63 | static DEFINE_MUTEX(rtnl_mutex); |
1da177e4 LT |
64 | |
65 | void rtnl_lock(void) | |
66 | { | |
6756ae4b | 67 | mutex_lock(&rtnl_mutex); |
1da177e4 | 68 | } |
e0d087af | 69 | EXPORT_SYMBOL(rtnl_lock); |
1da177e4 | 70 | |
6756ae4b | 71 | void __rtnl_unlock(void) |
1da177e4 | 72 | { |
6756ae4b | 73 | mutex_unlock(&rtnl_mutex); |
1da177e4 | 74 | } |
6756ae4b | 75 | |
1da177e4 LT |
76 | void rtnl_unlock(void) |
77 | { | |
58ec3b4d | 78 | /* This fellow will unlock it for us. */ |
1da177e4 LT |
79 | netdev_run_todo(); |
80 | } | |
e0d087af | 81 | EXPORT_SYMBOL(rtnl_unlock); |
1da177e4 | 82 | |
6756ae4b SH |
83 | int rtnl_trylock(void) |
84 | { | |
85 | return mutex_trylock(&rtnl_mutex); | |
86 | } | |
e0d087af | 87 | EXPORT_SYMBOL(rtnl_trylock); |
6756ae4b | 88 | |
c9c1014b PM |
89 | int rtnl_is_locked(void) |
90 | { | |
91 | return mutex_is_locked(&rtnl_mutex); | |
92 | } | |
e0d087af | 93 | EXPORT_SYMBOL(rtnl_is_locked); |
c9c1014b | 94 | |
a898def2 PM |
95 | #ifdef CONFIG_PROVE_LOCKING |
96 | int lockdep_rtnl_is_held(void) | |
97 | { | |
98 | return lockdep_is_held(&rtnl_mutex); | |
99 | } | |
100 | EXPORT_SYMBOL(lockdep_rtnl_is_held); | |
101 | #endif /* #ifdef CONFIG_PROVE_LOCKING */ | |
102 | ||
25239cee | 103 | static struct rtnl_link *rtnl_msg_handlers[RTNL_FAMILY_MAX + 1]; |
e2849863 TG |
104 | |
105 | static inline int rtm_msgindex(int msgtype) | |
106 | { | |
107 | int msgindex = msgtype - RTM_BASE; | |
108 | ||
109 | /* | |
110 | * msgindex < 0 implies someone tried to register a netlink | |
111 | * control code. msgindex >= RTM_NR_MSGTYPES may indicate that | |
112 | * the message type has not been added to linux/rtnetlink.h | |
113 | */ | |
114 | BUG_ON(msgindex < 0 || msgindex >= RTM_NR_MSGTYPES); | |
115 | ||
116 | return msgindex; | |
117 | } | |
118 | ||
119 | static rtnl_doit_func rtnl_get_doit(int protocol, int msgindex) | |
120 | { | |
121 | struct rtnl_link *tab; | |
122 | ||
25239cee | 123 | if (protocol <= RTNL_FAMILY_MAX) |
0f87b1dd PM |
124 | tab = rtnl_msg_handlers[protocol]; |
125 | else | |
126 | tab = NULL; | |
127 | ||
51057f2f | 128 | if (tab == NULL || tab[msgindex].doit == NULL) |
e2849863 TG |
129 | tab = rtnl_msg_handlers[PF_UNSPEC]; |
130 | ||
c80bbeae | 131 | return tab[msgindex].doit; |
e2849863 TG |
132 | } |
133 | ||
134 | static rtnl_dumpit_func rtnl_get_dumpit(int protocol, int msgindex) | |
135 | { | |
136 | struct rtnl_link *tab; | |
137 | ||
25239cee | 138 | if (protocol <= RTNL_FAMILY_MAX) |
0f87b1dd PM |
139 | tab = rtnl_msg_handlers[protocol]; |
140 | else | |
141 | tab = NULL; | |
142 | ||
51057f2f | 143 | if (tab == NULL || tab[msgindex].dumpit == NULL) |
e2849863 TG |
144 | tab = rtnl_msg_handlers[PF_UNSPEC]; |
145 | ||
c80bbeae | 146 | return tab[msgindex].dumpit; |
e2849863 TG |
147 | } |
148 | ||
c7ac8679 GR |
149 | static rtnl_calcit_func rtnl_get_calcit(int protocol, int msgindex) |
150 | { | |
151 | struct rtnl_link *tab; | |
152 | ||
153 | if (protocol <= RTNL_FAMILY_MAX) | |
154 | tab = rtnl_msg_handlers[protocol]; | |
155 | else | |
156 | tab = NULL; | |
157 | ||
158 | if (tab == NULL || tab[msgindex].calcit == NULL) | |
159 | tab = rtnl_msg_handlers[PF_UNSPEC]; | |
160 | ||
c80bbeae | 161 | return tab[msgindex].calcit; |
c7ac8679 GR |
162 | } |
163 | ||
e2849863 TG |
164 | /** |
165 | * __rtnl_register - Register a rtnetlink message type | |
166 | * @protocol: Protocol family or PF_UNSPEC | |
167 | * @msgtype: rtnetlink message type | |
168 | * @doit: Function pointer called for each request message | |
169 | * @dumpit: Function pointer called for each dump request (NLM_F_DUMP) message | |
c7ac8679 | 170 | * @calcit: Function pointer to calc size of dump message |
e2849863 TG |
171 | * |
172 | * Registers the specified function pointers (at least one of them has | |
173 | * to be non-NULL) to be called whenever a request message for the | |
174 | * specified protocol family and message type is received. | |
175 | * | |
176 | * The special protocol family PF_UNSPEC may be used to define fallback | |
177 | * function pointers for the case when no entry for the specific protocol | |
178 | * family exists. | |
179 | * | |
180 | * Returns 0 on success or a negative error code. | |
181 | */ | |
182 | int __rtnl_register(int protocol, int msgtype, | |
c7ac8679 GR |
183 | rtnl_doit_func doit, rtnl_dumpit_func dumpit, |
184 | rtnl_calcit_func calcit) | |
e2849863 TG |
185 | { |
186 | struct rtnl_link *tab; | |
187 | int msgindex; | |
188 | ||
25239cee | 189 | BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX); |
e2849863 TG |
190 | msgindex = rtm_msgindex(msgtype); |
191 | ||
192 | tab = rtnl_msg_handlers[protocol]; | |
193 | if (tab == NULL) { | |
194 | tab = kcalloc(RTM_NR_MSGTYPES, sizeof(*tab), GFP_KERNEL); | |
195 | if (tab == NULL) | |
196 | return -ENOBUFS; | |
197 | ||
198 | rtnl_msg_handlers[protocol] = tab; | |
199 | } | |
200 | ||
201 | if (doit) | |
202 | tab[msgindex].doit = doit; | |
203 | ||
204 | if (dumpit) | |
205 | tab[msgindex].dumpit = dumpit; | |
206 | ||
c7ac8679 GR |
207 | if (calcit) |
208 | tab[msgindex].calcit = calcit; | |
209 | ||
e2849863 TG |
210 | return 0; |
211 | } | |
e2849863 TG |
212 | EXPORT_SYMBOL_GPL(__rtnl_register); |
213 | ||
214 | /** | |
215 | * rtnl_register - Register a rtnetlink message type | |
216 | * | |
217 | * Identical to __rtnl_register() but panics on failure. This is useful | |
218 | * as failure of this function is very unlikely, it can only happen due | |
219 | * to lack of memory when allocating the chain to store all message | |
220 | * handlers for a protocol. Meant for use in init functions where lack | |
25985edc | 221 | * of memory implies no sense in continuing. |
e2849863 TG |
222 | */ |
223 | void rtnl_register(int protocol, int msgtype, | |
c7ac8679 GR |
224 | rtnl_doit_func doit, rtnl_dumpit_func dumpit, |
225 | rtnl_calcit_func calcit) | |
e2849863 | 226 | { |
c7ac8679 | 227 | if (__rtnl_register(protocol, msgtype, doit, dumpit, calcit) < 0) |
e2849863 TG |
228 | panic("Unable to register rtnetlink message handler, " |
229 | "protocol = %d, message type = %d\n", | |
230 | protocol, msgtype); | |
231 | } | |
e2849863 TG |
232 | EXPORT_SYMBOL_GPL(rtnl_register); |
233 | ||
234 | /** | |
235 | * rtnl_unregister - Unregister a rtnetlink message type | |
236 | * @protocol: Protocol family or PF_UNSPEC | |
237 | * @msgtype: rtnetlink message type | |
238 | * | |
239 | * Returns 0 on success or a negative error code. | |
240 | */ | |
241 | int rtnl_unregister(int protocol, int msgtype) | |
242 | { | |
243 | int msgindex; | |
244 | ||
25239cee | 245 | BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX); |
e2849863 TG |
246 | msgindex = rtm_msgindex(msgtype); |
247 | ||
248 | if (rtnl_msg_handlers[protocol] == NULL) | |
249 | return -ENOENT; | |
250 | ||
251 | rtnl_msg_handlers[protocol][msgindex].doit = NULL; | |
252 | rtnl_msg_handlers[protocol][msgindex].dumpit = NULL; | |
253 | ||
254 | return 0; | |
255 | } | |
e2849863 TG |
256 | EXPORT_SYMBOL_GPL(rtnl_unregister); |
257 | ||
258 | /** | |
259 | * rtnl_unregister_all - Unregister all rtnetlink message type of a protocol | |
260 | * @protocol : Protocol family or PF_UNSPEC | |
261 | * | |
262 | * Identical to calling rtnl_unregster() for all registered message types | |
263 | * of a certain protocol family. | |
264 | */ | |
265 | void rtnl_unregister_all(int protocol) | |
266 | { | |
25239cee | 267 | BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX); |
e2849863 TG |
268 | |
269 | kfree(rtnl_msg_handlers[protocol]); | |
270 | rtnl_msg_handlers[protocol] = NULL; | |
271 | } | |
e2849863 | 272 | EXPORT_SYMBOL_GPL(rtnl_unregister_all); |
1da177e4 | 273 | |
38f7b870 PM |
274 | static LIST_HEAD(link_ops); |
275 | ||
c63044f0 ED |
276 | static const struct rtnl_link_ops *rtnl_link_ops_get(const char *kind) |
277 | { | |
278 | const struct rtnl_link_ops *ops; | |
279 | ||
280 | list_for_each_entry(ops, &link_ops, list) { | |
281 | if (!strcmp(ops->kind, kind)) | |
282 | return ops; | |
283 | } | |
284 | return NULL; | |
285 | } | |
286 | ||
38f7b870 PM |
287 | /** |
288 | * __rtnl_link_register - Register rtnl_link_ops with rtnetlink. | |
289 | * @ops: struct rtnl_link_ops * to register | |
290 | * | |
291 | * The caller must hold the rtnl_mutex. This function should be used | |
292 | * by drivers that create devices during module initialization. It | |
293 | * must be called before registering the devices. | |
294 | * | |
295 | * Returns 0 on success or a negative error code. | |
296 | */ | |
297 | int __rtnl_link_register(struct rtnl_link_ops *ops) | |
298 | { | |
c63044f0 ED |
299 | if (rtnl_link_ops_get(ops->kind)) |
300 | return -EEXIST; | |
301 | ||
2d85cba2 | 302 | if (!ops->dellink) |
23289a37 | 303 | ops->dellink = unregister_netdevice_queue; |
2d85cba2 | 304 | |
38f7b870 PM |
305 | list_add_tail(&ops->list, &link_ops); |
306 | return 0; | |
307 | } | |
38f7b870 PM |
308 | EXPORT_SYMBOL_GPL(__rtnl_link_register); |
309 | ||
310 | /** | |
311 | * rtnl_link_register - Register rtnl_link_ops with rtnetlink. | |
312 | * @ops: struct rtnl_link_ops * to register | |
313 | * | |
314 | * Returns 0 on success or a negative error code. | |
315 | */ | |
316 | int rtnl_link_register(struct rtnl_link_ops *ops) | |
317 | { | |
318 | int err; | |
319 | ||
320 | rtnl_lock(); | |
321 | err = __rtnl_link_register(ops); | |
322 | rtnl_unlock(); | |
323 | return err; | |
324 | } | |
38f7b870 PM |
325 | EXPORT_SYMBOL_GPL(rtnl_link_register); |
326 | ||
669f87ba PE |
327 | static void __rtnl_kill_links(struct net *net, struct rtnl_link_ops *ops) |
328 | { | |
329 | struct net_device *dev; | |
23289a37 ED |
330 | LIST_HEAD(list_kill); |
331 | ||
669f87ba | 332 | for_each_netdev(net, dev) { |
23289a37 ED |
333 | if (dev->rtnl_link_ops == ops) |
334 | ops->dellink(dev, &list_kill); | |
669f87ba | 335 | } |
23289a37 | 336 | unregister_netdevice_many(&list_kill); |
669f87ba PE |
337 | } |
338 | ||
38f7b870 PM |
339 | /** |
340 | * __rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink. | |
341 | * @ops: struct rtnl_link_ops * to unregister | |
342 | * | |
2d85cba2 | 343 | * The caller must hold the rtnl_mutex. |
38f7b870 PM |
344 | */ |
345 | void __rtnl_link_unregister(struct rtnl_link_ops *ops) | |
346 | { | |
881d966b | 347 | struct net *net; |
2d85cba2 | 348 | |
881d966b | 349 | for_each_net(net) { |
669f87ba | 350 | __rtnl_kill_links(net, ops); |
2d85cba2 | 351 | } |
38f7b870 PM |
352 | list_del(&ops->list); |
353 | } | |
38f7b870 PM |
354 | EXPORT_SYMBOL_GPL(__rtnl_link_unregister); |
355 | ||
200b916f CW |
356 | /* Return with the rtnl_lock held when there are no network |
357 | * devices unregistering in any network namespace. | |
358 | */ | |
359 | static void rtnl_lock_unregistering_all(void) | |
360 | { | |
361 | struct net *net; | |
362 | bool unregistering; | |
363 | DEFINE_WAIT(wait); | |
364 | ||
365 | for (;;) { | |
366 | prepare_to_wait(&netdev_unregistering_wq, &wait, | |
367 | TASK_UNINTERRUPTIBLE); | |
368 | unregistering = false; | |
369 | rtnl_lock(); | |
370 | for_each_net(net) { | |
371 | if (net->dev_unreg_count > 0) { | |
372 | unregistering = true; | |
373 | break; | |
374 | } | |
375 | } | |
376 | if (!unregistering) | |
377 | break; | |
378 | __rtnl_unlock(); | |
379 | schedule(); | |
380 | } | |
381 | finish_wait(&netdev_unregistering_wq, &wait); | |
382 | } | |
383 | ||
38f7b870 PM |
384 | /** |
385 | * rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink. | |
386 | * @ops: struct rtnl_link_ops * to unregister | |
387 | */ | |
388 | void rtnl_link_unregister(struct rtnl_link_ops *ops) | |
389 | { | |
200b916f CW |
390 | /* Close the race with cleanup_net() */ |
391 | mutex_lock(&net_mutex); | |
392 | rtnl_lock_unregistering_all(); | |
38f7b870 PM |
393 | __rtnl_link_unregister(ops); |
394 | rtnl_unlock(); | |
200b916f | 395 | mutex_unlock(&net_mutex); |
38f7b870 | 396 | } |
38f7b870 PM |
397 | EXPORT_SYMBOL_GPL(rtnl_link_unregister); |
398 | ||
ba7d49b1 JP |
399 | static size_t rtnl_link_get_slave_info_data_size(const struct net_device *dev) |
400 | { | |
401 | struct net_device *master_dev; | |
402 | const struct rtnl_link_ops *ops; | |
403 | ||
404 | master_dev = netdev_master_upper_dev_get((struct net_device *) dev); | |
405 | if (!master_dev) | |
406 | return 0; | |
407 | ops = master_dev->rtnl_link_ops; | |
6049f253 | 408 | if (!ops || !ops->get_slave_size) |
ba7d49b1 JP |
409 | return 0; |
410 | /* IFLA_INFO_SLAVE_DATA + nested data */ | |
411 | return nla_total_size(sizeof(struct nlattr)) + | |
412 | ops->get_slave_size(master_dev, dev); | |
413 | } | |
414 | ||
38f7b870 PM |
415 | static size_t rtnl_link_get_size(const struct net_device *dev) |
416 | { | |
417 | const struct rtnl_link_ops *ops = dev->rtnl_link_ops; | |
418 | size_t size; | |
419 | ||
420 | if (!ops) | |
421 | return 0; | |
422 | ||
369cf77a TG |
423 | size = nla_total_size(sizeof(struct nlattr)) + /* IFLA_LINKINFO */ |
424 | nla_total_size(strlen(ops->kind) + 1); /* IFLA_INFO_KIND */ | |
38f7b870 PM |
425 | |
426 | if (ops->get_size) | |
427 | /* IFLA_INFO_DATA + nested data */ | |
369cf77a | 428 | size += nla_total_size(sizeof(struct nlattr)) + |
38f7b870 PM |
429 | ops->get_size(dev); |
430 | ||
431 | if (ops->get_xstats_size) | |
369cf77a TG |
432 | /* IFLA_INFO_XSTATS */ |
433 | size += nla_total_size(ops->get_xstats_size(dev)); | |
38f7b870 | 434 | |
ba7d49b1 JP |
435 | size += rtnl_link_get_slave_info_data_size(dev); |
436 | ||
38f7b870 PM |
437 | return size; |
438 | } | |
439 | ||
f8ff182c TG |
440 | static LIST_HEAD(rtnl_af_ops); |
441 | ||
442 | static const struct rtnl_af_ops *rtnl_af_lookup(const int family) | |
443 | { | |
444 | const struct rtnl_af_ops *ops; | |
445 | ||
446 | list_for_each_entry(ops, &rtnl_af_ops, list) { | |
447 | if (ops->family == family) | |
448 | return ops; | |
449 | } | |
450 | ||
451 | return NULL; | |
452 | } | |
453 | ||
f8ff182c TG |
454 | /** |
455 | * rtnl_af_register - Register rtnl_af_ops with rtnetlink. | |
456 | * @ops: struct rtnl_af_ops * to register | |
457 | * | |
458 | * Returns 0 on success or a negative error code. | |
459 | */ | |
3678a9d8 | 460 | void rtnl_af_register(struct rtnl_af_ops *ops) |
f8ff182c | 461 | { |
f8ff182c | 462 | rtnl_lock(); |
3678a9d8 | 463 | list_add_tail(&ops->list, &rtnl_af_ops); |
f8ff182c | 464 | rtnl_unlock(); |
f8ff182c TG |
465 | } |
466 | EXPORT_SYMBOL_GPL(rtnl_af_register); | |
467 | ||
468 | /** | |
469 | * __rtnl_af_unregister - Unregister rtnl_af_ops from rtnetlink. | |
470 | * @ops: struct rtnl_af_ops * to unregister | |
471 | * | |
472 | * The caller must hold the rtnl_mutex. | |
473 | */ | |
474 | void __rtnl_af_unregister(struct rtnl_af_ops *ops) | |
475 | { | |
476 | list_del(&ops->list); | |
477 | } | |
478 | EXPORT_SYMBOL_GPL(__rtnl_af_unregister); | |
479 | ||
480 | /** | |
481 | * rtnl_af_unregister - Unregister rtnl_af_ops from rtnetlink. | |
482 | * @ops: struct rtnl_af_ops * to unregister | |
483 | */ | |
484 | void rtnl_af_unregister(struct rtnl_af_ops *ops) | |
485 | { | |
486 | rtnl_lock(); | |
487 | __rtnl_af_unregister(ops); | |
488 | rtnl_unlock(); | |
489 | } | |
490 | EXPORT_SYMBOL_GPL(rtnl_af_unregister); | |
491 | ||
492 | static size_t rtnl_link_get_af_size(const struct net_device *dev) | |
493 | { | |
494 | struct rtnl_af_ops *af_ops; | |
495 | size_t size; | |
496 | ||
497 | /* IFLA_AF_SPEC */ | |
498 | size = nla_total_size(sizeof(struct nlattr)); | |
499 | ||
500 | list_for_each_entry(af_ops, &rtnl_af_ops, list) { | |
501 | if (af_ops->get_link_af_size) { | |
502 | /* AF_* + nested data */ | |
503 | size += nla_total_size(sizeof(struct nlattr)) + | |
504 | af_ops->get_link_af_size(dev); | |
505 | } | |
506 | } | |
507 | ||
508 | return size; | |
509 | } | |
510 | ||
ba7d49b1 | 511 | static bool rtnl_have_link_slave_info(const struct net_device *dev) |
38f7b870 | 512 | { |
ba7d49b1 | 513 | struct net_device *master_dev; |
38f7b870 | 514 | |
ba7d49b1 | 515 | master_dev = netdev_master_upper_dev_get((struct net_device *) dev); |
813f020c | 516 | if (master_dev && master_dev->rtnl_link_ops) |
ba7d49b1 JP |
517 | return true; |
518 | return false; | |
519 | } | |
520 | ||
521 | static int rtnl_link_slave_info_fill(struct sk_buff *skb, | |
522 | const struct net_device *dev) | |
523 | { | |
524 | struct net_device *master_dev; | |
525 | const struct rtnl_link_ops *ops; | |
526 | struct nlattr *slave_data; | |
527 | int err; | |
38f7b870 | 528 | |
ba7d49b1 JP |
529 | master_dev = netdev_master_upper_dev_get((struct net_device *) dev); |
530 | if (!master_dev) | |
531 | return 0; | |
532 | ops = master_dev->rtnl_link_ops; | |
533 | if (!ops) | |
534 | return 0; | |
535 | if (nla_put_string(skb, IFLA_INFO_SLAVE_KIND, ops->kind) < 0) | |
536 | return -EMSGSIZE; | |
537 | if (ops->fill_slave_info) { | |
538 | slave_data = nla_nest_start(skb, IFLA_INFO_SLAVE_DATA); | |
539 | if (!slave_data) | |
540 | return -EMSGSIZE; | |
541 | err = ops->fill_slave_info(skb, master_dev, dev); | |
542 | if (err < 0) | |
543 | goto err_cancel_slave_data; | |
544 | nla_nest_end(skb, slave_data); | |
545 | } | |
546 | return 0; | |
547 | ||
548 | err_cancel_slave_data: | |
549 | nla_nest_cancel(skb, slave_data); | |
550 | return err; | |
551 | } | |
552 | ||
553 | static int rtnl_link_info_fill(struct sk_buff *skb, | |
554 | const struct net_device *dev) | |
555 | { | |
556 | const struct rtnl_link_ops *ops = dev->rtnl_link_ops; | |
557 | struct nlattr *data; | |
558 | int err; | |
559 | ||
560 | if (!ops) | |
561 | return 0; | |
38f7b870 | 562 | if (nla_put_string(skb, IFLA_INFO_KIND, ops->kind) < 0) |
ba7d49b1 | 563 | return -EMSGSIZE; |
38f7b870 PM |
564 | if (ops->fill_xstats) { |
565 | err = ops->fill_xstats(skb, dev); | |
566 | if (err < 0) | |
ba7d49b1 | 567 | return err; |
38f7b870 PM |
568 | } |
569 | if (ops->fill_info) { | |
570 | data = nla_nest_start(skb, IFLA_INFO_DATA); | |
ba7d49b1 JP |
571 | if (data == NULL) |
572 | return -EMSGSIZE; | |
38f7b870 PM |
573 | err = ops->fill_info(skb, dev); |
574 | if (err < 0) | |
575 | goto err_cancel_data; | |
576 | nla_nest_end(skb, data); | |
577 | } | |
38f7b870 PM |
578 | return 0; |
579 | ||
580 | err_cancel_data: | |
581 | nla_nest_cancel(skb, data); | |
ba7d49b1 JP |
582 | return err; |
583 | } | |
584 | ||
585 | static int rtnl_link_fill(struct sk_buff *skb, const struct net_device *dev) | |
586 | { | |
587 | struct nlattr *linkinfo; | |
588 | int err = -EMSGSIZE; | |
589 | ||
590 | linkinfo = nla_nest_start(skb, IFLA_LINKINFO); | |
591 | if (linkinfo == NULL) | |
592 | goto out; | |
593 | ||
594 | err = rtnl_link_info_fill(skb, dev); | |
595 | if (err < 0) | |
596 | goto err_cancel_link; | |
597 | ||
598 | err = rtnl_link_slave_info_fill(skb, dev); | |
599 | if (err < 0) | |
600 | goto err_cancel_link; | |
601 | ||
602 | nla_nest_end(skb, linkinfo); | |
603 | return 0; | |
604 | ||
38f7b870 PM |
605 | err_cancel_link: |
606 | nla_nest_cancel(skb, linkinfo); | |
607 | out: | |
608 | return err; | |
609 | } | |
610 | ||
95c96174 | 611 | int rtnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, unsigned int group, int echo) |
1da177e4 | 612 | { |
97c53cac | 613 | struct sock *rtnl = net->rtnl; |
1da177e4 LT |
614 | int err = 0; |
615 | ||
ac6d439d | 616 | NETLINK_CB(skb).dst_group = group; |
1da177e4 LT |
617 | if (echo) |
618 | atomic_inc(&skb->users); | |
619 | netlink_broadcast(rtnl, skb, pid, group, GFP_KERNEL); | |
620 | if (echo) | |
621 | err = netlink_unicast(rtnl, skb, pid, MSG_DONTWAIT); | |
622 | return err; | |
623 | } | |
624 | ||
97c53cac | 625 | int rtnl_unicast(struct sk_buff *skb, struct net *net, u32 pid) |
2942e900 | 626 | { |
97c53cac DL |
627 | struct sock *rtnl = net->rtnl; |
628 | ||
2942e900 TG |
629 | return nlmsg_unicast(rtnl, skb, pid); |
630 | } | |
e0d087af | 631 | EXPORT_SYMBOL(rtnl_unicast); |
2942e900 | 632 | |
1ce85fe4 PNA |
633 | void rtnl_notify(struct sk_buff *skb, struct net *net, u32 pid, u32 group, |
634 | struct nlmsghdr *nlh, gfp_t flags) | |
97676b6b | 635 | { |
97c53cac | 636 | struct sock *rtnl = net->rtnl; |
97676b6b TG |
637 | int report = 0; |
638 | ||
639 | if (nlh) | |
640 | report = nlmsg_report(nlh); | |
641 | ||
1ce85fe4 | 642 | nlmsg_notify(rtnl, skb, pid, group, report, flags); |
97676b6b | 643 | } |
e0d087af | 644 | EXPORT_SYMBOL(rtnl_notify); |
97676b6b | 645 | |
97c53cac | 646 | void rtnl_set_sk_err(struct net *net, u32 group, int error) |
97676b6b | 647 | { |
97c53cac DL |
648 | struct sock *rtnl = net->rtnl; |
649 | ||
97676b6b TG |
650 | netlink_set_err(rtnl, 0, group, error); |
651 | } | |
e0d087af | 652 | EXPORT_SYMBOL(rtnl_set_sk_err); |
97676b6b | 653 | |
1da177e4 LT |
654 | int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics) |
655 | { | |
2d7202bf TG |
656 | struct nlattr *mx; |
657 | int i, valid = 0; | |
658 | ||
659 | mx = nla_nest_start(skb, RTA_METRICS); | |
660 | if (mx == NULL) | |
661 | return -ENOBUFS; | |
662 | ||
663 | for (i = 0; i < RTAX_MAX; i++) { | |
664 | if (metrics[i]) { | |
665 | valid++; | |
a6574349 DM |
666 | if (nla_put_u32(skb, i+1, metrics[i])) |
667 | goto nla_put_failure; | |
2d7202bf | 668 | } |
1da177e4 | 669 | } |
1da177e4 | 670 | |
a57d27fc DM |
671 | if (!valid) { |
672 | nla_nest_cancel(skb, mx); | |
673 | return 0; | |
674 | } | |
2d7202bf TG |
675 | |
676 | return nla_nest_end(skb, mx); | |
677 | ||
678 | nla_put_failure: | |
bc3ed28c TG |
679 | nla_nest_cancel(skb, mx); |
680 | return -EMSGSIZE; | |
1da177e4 | 681 | } |
e0d087af | 682 | EXPORT_SYMBOL(rtnetlink_put_metrics); |
1da177e4 | 683 | |
e3703b3d | 684 | int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst, u32 id, |
87a50699 | 685 | long expires, u32 error) |
e3703b3d TG |
686 | { |
687 | struct rta_cacheinfo ci = { | |
a399a805 | 688 | .rta_lastuse = jiffies_delta_to_clock_t(jiffies - dst->lastuse), |
e3703b3d TG |
689 | .rta_used = dst->__use, |
690 | .rta_clntref = atomic_read(&(dst->__refcnt)), | |
691 | .rta_error = error, | |
692 | .rta_id = id, | |
e3703b3d TG |
693 | }; |
694 | ||
8253947e LW |
695 | if (expires) { |
696 | unsigned long clock; | |
e3703b3d | 697 | |
8253947e LW |
698 | clock = jiffies_to_clock_t(abs(expires)); |
699 | clock = min_t(unsigned long, clock, INT_MAX); | |
700 | ci.rta_expires = (expires > 0) ? clock : -clock; | |
701 | } | |
e3703b3d TG |
702 | return nla_put(skb, RTA_CACHEINFO, sizeof(ci), &ci); |
703 | } | |
e3703b3d | 704 | EXPORT_SYMBOL_GPL(rtnl_put_cacheinfo); |
1da177e4 | 705 | |
93b2d4a2 | 706 | static void set_operstate(struct net_device *dev, unsigned char transition) |
b00055aa SR |
707 | { |
708 | unsigned char operstate = dev->operstate; | |
709 | ||
e0d087af | 710 | switch (transition) { |
b00055aa SR |
711 | case IF_OPER_UP: |
712 | if ((operstate == IF_OPER_DORMANT || | |
713 | operstate == IF_OPER_UNKNOWN) && | |
714 | !netif_dormant(dev)) | |
715 | operstate = IF_OPER_UP; | |
716 | break; | |
717 | ||
718 | case IF_OPER_DORMANT: | |
719 | if (operstate == IF_OPER_UP || | |
720 | operstate == IF_OPER_UNKNOWN) | |
721 | operstate = IF_OPER_DORMANT; | |
722 | break; | |
3ff50b79 | 723 | } |
b00055aa SR |
724 | |
725 | if (dev->operstate != operstate) { | |
726 | write_lock_bh(&dev_base_lock); | |
727 | dev->operstate = operstate; | |
728 | write_unlock_bh(&dev_base_lock); | |
93b2d4a2 DM |
729 | netdev_state_change(dev); |
730 | } | |
b00055aa SR |
731 | } |
732 | ||
b1beb681 JB |
733 | static unsigned int rtnl_dev_get_flags(const struct net_device *dev) |
734 | { | |
735 | return (dev->flags & ~(IFF_PROMISC | IFF_ALLMULTI)) | | |
736 | (dev->gflags & (IFF_PROMISC | IFF_ALLMULTI)); | |
737 | } | |
738 | ||
3729d502 PM |
739 | static unsigned int rtnl_dev_combine_flags(const struct net_device *dev, |
740 | const struct ifinfomsg *ifm) | |
741 | { | |
742 | unsigned int flags = ifm->ifi_flags; | |
743 | ||
744 | /* bugwards compatibility: ifi_change == 0 is treated as ~0 */ | |
745 | if (ifm->ifi_change) | |
746 | flags = (flags & ifm->ifi_change) | | |
b1beb681 | 747 | (rtnl_dev_get_flags(dev) & ~ifm->ifi_change); |
3729d502 PM |
748 | |
749 | return flags; | |
750 | } | |
751 | ||
b60c5115 | 752 | static void copy_rtnl_link_stats(struct rtnl_link_stats *a, |
be1f3c2c | 753 | const struct rtnl_link_stats64 *b) |
1da177e4 | 754 | { |
b60c5115 TG |
755 | a->rx_packets = b->rx_packets; |
756 | a->tx_packets = b->tx_packets; | |
757 | a->rx_bytes = b->rx_bytes; | |
758 | a->tx_bytes = b->tx_bytes; | |
759 | a->rx_errors = b->rx_errors; | |
760 | a->tx_errors = b->tx_errors; | |
761 | a->rx_dropped = b->rx_dropped; | |
762 | a->tx_dropped = b->tx_dropped; | |
763 | ||
764 | a->multicast = b->multicast; | |
765 | a->collisions = b->collisions; | |
766 | ||
767 | a->rx_length_errors = b->rx_length_errors; | |
768 | a->rx_over_errors = b->rx_over_errors; | |
769 | a->rx_crc_errors = b->rx_crc_errors; | |
770 | a->rx_frame_errors = b->rx_frame_errors; | |
771 | a->rx_fifo_errors = b->rx_fifo_errors; | |
772 | a->rx_missed_errors = b->rx_missed_errors; | |
773 | ||
774 | a->tx_aborted_errors = b->tx_aborted_errors; | |
775 | a->tx_carrier_errors = b->tx_carrier_errors; | |
776 | a->tx_fifo_errors = b->tx_fifo_errors; | |
777 | a->tx_heartbeat_errors = b->tx_heartbeat_errors; | |
778 | a->tx_window_errors = b->tx_window_errors; | |
779 | ||
780 | a->rx_compressed = b->rx_compressed; | |
781 | a->tx_compressed = b->tx_compressed; | |
10708f37 JE |
782 | } |
783 | ||
be1f3c2c | 784 | static void copy_rtnl_link_stats64(void *v, const struct rtnl_link_stats64 *b) |
10708f37 | 785 | { |
afdcba37 | 786 | memcpy(v, b, sizeof(*b)); |
10708f37 | 787 | } |
1da177e4 | 788 | |
c02db8c6 | 789 | /* All VF info */ |
115c9b81 GR |
790 | static inline int rtnl_vfinfo_size(const struct net_device *dev, |
791 | u32 ext_filter_mask) | |
ebc08a6f | 792 | { |
115c9b81 GR |
793 | if (dev->dev.parent && dev_is_pci(dev->dev.parent) && |
794 | (ext_filter_mask & RTEXT_FILTER_VF)) { | |
c02db8c6 | 795 | int num_vfs = dev_num_vf(dev->dev.parent); |
045de01a SF |
796 | size_t size = nla_total_size(sizeof(struct nlattr)); |
797 | size += nla_total_size(num_vfs * sizeof(struct nlattr)); | |
798 | size += num_vfs * | |
799 | (nla_total_size(sizeof(struct ifla_vf_mac)) + | |
800 | nla_total_size(sizeof(struct ifla_vf_vlan)) + | |
5f8444a3 GR |
801 | nla_total_size(sizeof(struct ifla_vf_tx_rate)) + |
802 | nla_total_size(sizeof(struct ifla_vf_spoofchk))); | |
c02db8c6 CW |
803 | return size; |
804 | } else | |
ebc08a6f WM |
805 | return 0; |
806 | } | |
807 | ||
c53864fd DG |
808 | static size_t rtnl_port_size(const struct net_device *dev, |
809 | u32 ext_filter_mask) | |
57b61080 SF |
810 | { |
811 | size_t port_size = nla_total_size(4) /* PORT_VF */ | |
812 | + nla_total_size(PORT_PROFILE_MAX) /* PORT_PROFILE */ | |
813 | + nla_total_size(sizeof(struct ifla_port_vsi)) | |
814 | /* PORT_VSI_TYPE */ | |
815 | + nla_total_size(PORT_UUID_MAX) /* PORT_INSTANCE_UUID */ | |
816 | + nla_total_size(PORT_UUID_MAX) /* PORT_HOST_UUID */ | |
817 | + nla_total_size(1) /* PROT_VDP_REQUEST */ | |
818 | + nla_total_size(2); /* PORT_VDP_RESPONSE */ | |
819 | size_t vf_ports_size = nla_total_size(sizeof(struct nlattr)); | |
820 | size_t vf_port_size = nla_total_size(sizeof(struct nlattr)) | |
821 | + port_size; | |
822 | size_t port_self_size = nla_total_size(sizeof(struct nlattr)) | |
823 | + port_size; | |
824 | ||
c53864fd DG |
825 | if (!dev->netdev_ops->ndo_get_vf_port || !dev->dev.parent || |
826 | !(ext_filter_mask & RTEXT_FILTER_VF)) | |
57b61080 SF |
827 | return 0; |
828 | if (dev_num_vf(dev->dev.parent)) | |
829 | return port_self_size + vf_ports_size + | |
830 | vf_port_size * dev_num_vf(dev->dev.parent); | |
831 | else | |
832 | return port_self_size; | |
833 | } | |
834 | ||
115c9b81 GR |
835 | static noinline size_t if_nlmsg_size(const struct net_device *dev, |
836 | u32 ext_filter_mask) | |
339bf98f TG |
837 | { |
838 | return NLMSG_ALIGN(sizeof(struct ifinfomsg)) | |
839 | + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */ | |
0b815a1a | 840 | + nla_total_size(IFALIASZ) /* IFLA_IFALIAS */ |
339bf98f TG |
841 | + nla_total_size(IFNAMSIZ) /* IFLA_QDISC */ |
842 | + nla_total_size(sizeof(struct rtnl_link_ifmap)) | |
843 | + nla_total_size(sizeof(struct rtnl_link_stats)) | |
adcfe196 | 844 | + nla_total_size(sizeof(struct rtnl_link_stats64)) |
339bf98f TG |
845 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */ |
846 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_BROADCAST */ | |
847 | + nla_total_size(4) /* IFLA_TXQLEN */ | |
848 | + nla_total_size(4) /* IFLA_WEIGHT */ | |
849 | + nla_total_size(4) /* IFLA_MTU */ | |
850 | + nla_total_size(4) /* IFLA_LINK */ | |
851 | + nla_total_size(4) /* IFLA_MASTER */ | |
9a57247f | 852 | + nla_total_size(1) /* IFLA_CARRIER */ |
edbc0bb3 | 853 | + nla_total_size(4) /* IFLA_PROMISCUITY */ |
76ff5cc9 JP |
854 | + nla_total_size(4) /* IFLA_NUM_TX_QUEUES */ |
855 | + nla_total_size(4) /* IFLA_NUM_RX_QUEUES */ | |
339bf98f | 856 | + nla_total_size(1) /* IFLA_OPERSTATE */ |
38f7b870 | 857 | + nla_total_size(1) /* IFLA_LINKMODE */ |
2d3b479d | 858 | + nla_total_size(4) /* IFLA_CARRIER_CHANGES */ |
115c9b81 GR |
859 | + nla_total_size(ext_filter_mask |
860 | & RTEXT_FILTER_VF ? 4 : 0) /* IFLA_NUM_VF */ | |
861 | + rtnl_vfinfo_size(dev, ext_filter_mask) /* IFLA_VFINFO_LIST */ | |
c53864fd | 862 | + rtnl_port_size(dev, ext_filter_mask) /* IFLA_VF_PORTS + IFLA_PORT_SELF */ |
f8ff182c | 863 | + rtnl_link_get_size(dev) /* IFLA_LINKINFO */ |
66cae9ed JP |
864 | + rtnl_link_get_af_size(dev) /* IFLA_AF_SPEC */ |
865 | + nla_total_size(MAX_PHYS_PORT_ID_LEN); /* IFLA_PHYS_PORT_ID */ | |
339bf98f TG |
866 | } |
867 | ||
57b61080 SF |
868 | static int rtnl_vf_ports_fill(struct sk_buff *skb, struct net_device *dev) |
869 | { | |
870 | struct nlattr *vf_ports; | |
871 | struct nlattr *vf_port; | |
872 | int vf; | |
873 | int err; | |
874 | ||
875 | vf_ports = nla_nest_start(skb, IFLA_VF_PORTS); | |
876 | if (!vf_ports) | |
877 | return -EMSGSIZE; | |
878 | ||
879 | for (vf = 0; vf < dev_num_vf(dev->dev.parent); vf++) { | |
880 | vf_port = nla_nest_start(skb, IFLA_VF_PORT); | |
8ca94183 SF |
881 | if (!vf_port) |
882 | goto nla_put_failure; | |
a6574349 DM |
883 | if (nla_put_u32(skb, IFLA_PORT_VF, vf)) |
884 | goto nla_put_failure; | |
57b61080 | 885 | err = dev->netdev_ops->ndo_get_vf_port(dev, vf, skb); |
8ca94183 SF |
886 | if (err == -EMSGSIZE) |
887 | goto nla_put_failure; | |
57b61080 | 888 | if (err) { |
57b61080 SF |
889 | nla_nest_cancel(skb, vf_port); |
890 | continue; | |
891 | } | |
892 | nla_nest_end(skb, vf_port); | |
893 | } | |
894 | ||
895 | nla_nest_end(skb, vf_ports); | |
896 | ||
897 | return 0; | |
8ca94183 SF |
898 | |
899 | nla_put_failure: | |
900 | nla_nest_cancel(skb, vf_ports); | |
901 | return -EMSGSIZE; | |
57b61080 SF |
902 | } |
903 | ||
904 | static int rtnl_port_self_fill(struct sk_buff *skb, struct net_device *dev) | |
905 | { | |
906 | struct nlattr *port_self; | |
907 | int err; | |
908 | ||
909 | port_self = nla_nest_start(skb, IFLA_PORT_SELF); | |
910 | if (!port_self) | |
911 | return -EMSGSIZE; | |
912 | ||
913 | err = dev->netdev_ops->ndo_get_vf_port(dev, PORT_SELF_VF, skb); | |
914 | if (err) { | |
915 | nla_nest_cancel(skb, port_self); | |
8ca94183 | 916 | return (err == -EMSGSIZE) ? err : 0; |
57b61080 SF |
917 | } |
918 | ||
919 | nla_nest_end(skb, port_self); | |
920 | ||
921 | return 0; | |
922 | } | |
923 | ||
c53864fd DG |
924 | static int rtnl_port_fill(struct sk_buff *skb, struct net_device *dev, |
925 | u32 ext_filter_mask) | |
57b61080 SF |
926 | { |
927 | int err; | |
928 | ||
c53864fd DG |
929 | if (!dev->netdev_ops->ndo_get_vf_port || !dev->dev.parent || |
930 | !(ext_filter_mask & RTEXT_FILTER_VF)) | |
57b61080 SF |
931 | return 0; |
932 | ||
933 | err = rtnl_port_self_fill(skb, dev); | |
934 | if (err) | |
935 | return err; | |
936 | ||
937 | if (dev_num_vf(dev->dev.parent)) { | |
938 | err = rtnl_vf_ports_fill(skb, dev); | |
939 | if (err) | |
940 | return err; | |
941 | } | |
942 | ||
943 | return 0; | |
944 | } | |
945 | ||
66cae9ed JP |
946 | static int rtnl_phys_port_id_fill(struct sk_buff *skb, struct net_device *dev) |
947 | { | |
948 | int err; | |
949 | struct netdev_phys_port_id ppid; | |
950 | ||
951 | err = dev_get_phys_port_id(dev, &ppid); | |
952 | if (err) { | |
953 | if (err == -EOPNOTSUPP) | |
954 | return 0; | |
955 | return err; | |
956 | } | |
957 | ||
958 | if (nla_put(skb, IFLA_PHYS_PORT_ID, ppid.id_len, ppid.id)) | |
959 | return -EMSGSIZE; | |
960 | ||
961 | return 0; | |
962 | } | |
963 | ||
b60c5115 | 964 | static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev, |
575c3e2a | 965 | int type, u32 pid, u32 seq, u32 change, |
115c9b81 | 966 | unsigned int flags, u32 ext_filter_mask) |
b60c5115 TG |
967 | { |
968 | struct ifinfomsg *ifm; | |
969 | struct nlmsghdr *nlh; | |
28172739 | 970 | struct rtnl_link_stats64 temp; |
be1f3c2c | 971 | const struct rtnl_link_stats64 *stats; |
f8ff182c TG |
972 | struct nlattr *attr, *af_spec; |
973 | struct rtnl_af_ops *af_ops; | |
898e5061 | 974 | struct net_device *upper_dev = netdev_master_upper_dev_get(dev); |
1da177e4 | 975 | |
2907c35f | 976 | ASSERT_RTNL(); |
b60c5115 TG |
977 | nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ifm), flags); |
978 | if (nlh == NULL) | |
26932566 | 979 | return -EMSGSIZE; |
1da177e4 | 980 | |
b60c5115 TG |
981 | ifm = nlmsg_data(nlh); |
982 | ifm->ifi_family = AF_UNSPEC; | |
983 | ifm->__ifi_pad = 0; | |
984 | ifm->ifi_type = dev->type; | |
985 | ifm->ifi_index = dev->ifindex; | |
986 | ifm->ifi_flags = dev_get_flags(dev); | |
987 | ifm->ifi_change = change; | |
988 | ||
a6574349 DM |
989 | if (nla_put_string(skb, IFLA_IFNAME, dev->name) || |
990 | nla_put_u32(skb, IFLA_TXQLEN, dev->tx_queue_len) || | |
991 | nla_put_u8(skb, IFLA_OPERSTATE, | |
992 | netif_running(dev) ? dev->operstate : IF_OPER_DOWN) || | |
993 | nla_put_u8(skb, IFLA_LINKMODE, dev->link_mode) || | |
994 | nla_put_u32(skb, IFLA_MTU, dev->mtu) || | |
995 | nla_put_u32(skb, IFLA_GROUP, dev->group) || | |
edbc0bb3 | 996 | nla_put_u32(skb, IFLA_PROMISCUITY, dev->promiscuity) || |
76ff5cc9 | 997 | nla_put_u32(skb, IFLA_NUM_TX_QUEUES, dev->num_tx_queues) || |
1d69c2b3 | 998 | #ifdef CONFIG_RPS |
76ff5cc9 | 999 | nla_put_u32(skb, IFLA_NUM_RX_QUEUES, dev->num_rx_queues) || |
1d69c2b3 | 1000 | #endif |
a6574349 DM |
1001 | (dev->ifindex != dev->iflink && |
1002 | nla_put_u32(skb, IFLA_LINK, dev->iflink)) || | |
898e5061 JP |
1003 | (upper_dev && |
1004 | nla_put_u32(skb, IFLA_MASTER, upper_dev->ifindex)) || | |
9a57247f | 1005 | nla_put_u8(skb, IFLA_CARRIER, netif_carrier_ok(dev)) || |
a6574349 DM |
1006 | (dev->qdisc && |
1007 | nla_put_string(skb, IFLA_QDISC, dev->qdisc->ops->id)) || | |
1008 | (dev->ifalias && | |
2d3b479d | 1009 | nla_put_string(skb, IFLA_IFALIAS, dev->ifalias)) || |
1010 | nla_put_u32(skb, IFLA_CARRIER_CHANGES, | |
1011 | atomic_read(&dev->carrier_changes))) | |
a6574349 | 1012 | goto nla_put_failure; |
0b815a1a | 1013 | |
1da177e4 LT |
1014 | if (1) { |
1015 | struct rtnl_link_ifmap map = { | |
1016 | .mem_start = dev->mem_start, | |
1017 | .mem_end = dev->mem_end, | |
1018 | .base_addr = dev->base_addr, | |
1019 | .irq = dev->irq, | |
1020 | .dma = dev->dma, | |
1021 | .port = dev->if_port, | |
1022 | }; | |
a6574349 DM |
1023 | if (nla_put(skb, IFLA_MAP, sizeof(map), &map)) |
1024 | goto nla_put_failure; | |
1da177e4 LT |
1025 | } |
1026 | ||
1027 | if (dev->addr_len) { | |
a6574349 DM |
1028 | if (nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr) || |
1029 | nla_put(skb, IFLA_BROADCAST, dev->addr_len, dev->broadcast)) | |
1030 | goto nla_put_failure; | |
1da177e4 LT |
1031 | } |
1032 | ||
66cae9ed JP |
1033 | if (rtnl_phys_port_id_fill(skb, dev)) |
1034 | goto nla_put_failure; | |
1035 | ||
96e74088 PE |
1036 | attr = nla_reserve(skb, IFLA_STATS, |
1037 | sizeof(struct rtnl_link_stats)); | |
1038 | if (attr == NULL) | |
1039 | goto nla_put_failure; | |
b60c5115 | 1040 | |
28172739 | 1041 | stats = dev_get_stats(dev, &temp); |
96e74088 | 1042 | copy_rtnl_link_stats(nla_data(attr), stats); |
1da177e4 | 1043 | |
10708f37 JE |
1044 | attr = nla_reserve(skb, IFLA_STATS64, |
1045 | sizeof(struct rtnl_link_stats64)); | |
1046 | if (attr == NULL) | |
1047 | goto nla_put_failure; | |
10708f37 JE |
1048 | copy_rtnl_link_stats64(nla_data(attr), stats); |
1049 | ||
a6574349 DM |
1050 | if (dev->dev.parent && (ext_filter_mask & RTEXT_FILTER_VF) && |
1051 | nla_put_u32(skb, IFLA_NUM_VF, dev_num_vf(dev->dev.parent))) | |
1052 | goto nla_put_failure; | |
57b61080 | 1053 | |
115c9b81 GR |
1054 | if (dev->netdev_ops->ndo_get_vf_config && dev->dev.parent |
1055 | && (ext_filter_mask & RTEXT_FILTER_VF)) { | |
ebc08a6f | 1056 | int i; |
ebc08a6f | 1057 | |
c02db8c6 CW |
1058 | struct nlattr *vfinfo, *vf; |
1059 | int num_vfs = dev_num_vf(dev->dev.parent); | |
1060 | ||
c02db8c6 CW |
1061 | vfinfo = nla_nest_start(skb, IFLA_VFINFO_LIST); |
1062 | if (!vfinfo) | |
1063 | goto nla_put_failure; | |
1064 | for (i = 0; i < num_vfs; i++) { | |
1065 | struct ifla_vf_info ivi; | |
1066 | struct ifla_vf_mac vf_mac; | |
1067 | struct ifla_vf_vlan vf_vlan; | |
1068 | struct ifla_vf_tx_rate vf_tx_rate; | |
5f8444a3 | 1069 | struct ifla_vf_spoofchk vf_spoofchk; |
1d8faf48 | 1070 | struct ifla_vf_link_state vf_linkstate; |
5f8444a3 GR |
1071 | |
1072 | /* | |
1073 | * Not all SR-IOV capable drivers support the | |
1074 | * spoofcheck query. Preset to -1 so the user | |
1075 | * space tool can detect that the driver didn't | |
1076 | * report anything. | |
1077 | */ | |
1078 | ivi.spoofchk = -1; | |
84d73cd3 | 1079 | memset(ivi.mac, 0, sizeof(ivi.mac)); |
1d8faf48 RE |
1080 | /* The default value for VF link state is "auto" |
1081 | * IFLA_VF_LINK_STATE_AUTO which equals zero | |
1082 | */ | |
1083 | ivi.linkstate = 0; | |
ebc08a6f WM |
1084 | if (dev->netdev_ops->ndo_get_vf_config(dev, i, &ivi)) |
1085 | break; | |
5f8444a3 GR |
1086 | vf_mac.vf = |
1087 | vf_vlan.vf = | |
1088 | vf_tx_rate.vf = | |
1d8faf48 RE |
1089 | vf_spoofchk.vf = |
1090 | vf_linkstate.vf = ivi.vf; | |
5f8444a3 | 1091 | |
c02db8c6 CW |
1092 | memcpy(vf_mac.mac, ivi.mac, sizeof(ivi.mac)); |
1093 | vf_vlan.vlan = ivi.vlan; | |
1094 | vf_vlan.qos = ivi.qos; | |
1095 | vf_tx_rate.rate = ivi.tx_rate; | |
5f8444a3 | 1096 | vf_spoofchk.setting = ivi.spoofchk; |
1d8faf48 | 1097 | vf_linkstate.link_state = ivi.linkstate; |
c02db8c6 CW |
1098 | vf = nla_nest_start(skb, IFLA_VF_INFO); |
1099 | if (!vf) { | |
1100 | nla_nest_cancel(skb, vfinfo); | |
1101 | goto nla_put_failure; | |
1102 | } | |
a6574349 DM |
1103 | if (nla_put(skb, IFLA_VF_MAC, sizeof(vf_mac), &vf_mac) || |
1104 | nla_put(skb, IFLA_VF_VLAN, sizeof(vf_vlan), &vf_vlan) || | |
1105 | nla_put(skb, IFLA_VF_TX_RATE, sizeof(vf_tx_rate), | |
1106 | &vf_tx_rate) || | |
1107 | nla_put(skb, IFLA_VF_SPOOFCHK, sizeof(vf_spoofchk), | |
1d8faf48 RE |
1108 | &vf_spoofchk) || |
1109 | nla_put(skb, IFLA_VF_LINK_STATE, sizeof(vf_linkstate), | |
1110 | &vf_linkstate)) | |
a6574349 | 1111 | goto nla_put_failure; |
c02db8c6 | 1112 | nla_nest_end(skb, vf); |
ebc08a6f | 1113 | } |
c02db8c6 | 1114 | nla_nest_end(skb, vfinfo); |
ebc08a6f | 1115 | } |
57b61080 | 1116 | |
c53864fd | 1117 | if (rtnl_port_fill(skb, dev, ext_filter_mask)) |
57b61080 SF |
1118 | goto nla_put_failure; |
1119 | ||
ba7d49b1 | 1120 | if (dev->rtnl_link_ops || rtnl_have_link_slave_info(dev)) { |
38f7b870 PM |
1121 | if (rtnl_link_fill(skb, dev) < 0) |
1122 | goto nla_put_failure; | |
1123 | } | |
1124 | ||
f8ff182c TG |
1125 | if (!(af_spec = nla_nest_start(skb, IFLA_AF_SPEC))) |
1126 | goto nla_put_failure; | |
1127 | ||
1128 | list_for_each_entry(af_ops, &rtnl_af_ops, list) { | |
1129 | if (af_ops->fill_link_af) { | |
1130 | struct nlattr *af; | |
1131 | int err; | |
1132 | ||
1133 | if (!(af = nla_nest_start(skb, af_ops->family))) | |
1134 | goto nla_put_failure; | |
1135 | ||
1136 | err = af_ops->fill_link_af(skb, dev); | |
1137 | ||
1138 | /* | |
1139 | * Caller may return ENODATA to indicate that there | |
1140 | * was no data to be dumped. This is not an error, it | |
1141 | * means we should trim the attribute header and | |
1142 | * continue. | |
1143 | */ | |
1144 | if (err == -ENODATA) | |
1145 | nla_nest_cancel(skb, af); | |
1146 | else if (err < 0) | |
1147 | goto nla_put_failure; | |
1148 | ||
1149 | nla_nest_end(skb, af); | |
1150 | } | |
1151 | } | |
1152 | ||
1153 | nla_nest_end(skb, af_spec); | |
1154 | ||
b60c5115 TG |
1155 | return nlmsg_end(skb, nlh); |
1156 | ||
1157 | nla_put_failure: | |
26932566 PM |
1158 | nlmsg_cancel(skb, nlh); |
1159 | return -EMSGSIZE; | |
1da177e4 LT |
1160 | } |
1161 | ||
f7b12606 | 1162 | static const struct nla_policy ifla_policy[IFLA_MAX+1] = { |
5176f91e | 1163 | [IFLA_IFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ-1 }, |
38f7b870 PM |
1164 | [IFLA_ADDRESS] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN }, |
1165 | [IFLA_BROADCAST] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN }, | |
5176f91e | 1166 | [IFLA_MAP] = { .len = sizeof(struct rtnl_link_ifmap) }, |
da5e0494 | 1167 | [IFLA_MTU] = { .type = NLA_U32 }, |
76e87306 | 1168 | [IFLA_LINK] = { .type = NLA_U32 }, |
fbaec0ea | 1169 | [IFLA_MASTER] = { .type = NLA_U32 }, |
9a57247f | 1170 | [IFLA_CARRIER] = { .type = NLA_U8 }, |
da5e0494 TG |
1171 | [IFLA_TXQLEN] = { .type = NLA_U32 }, |
1172 | [IFLA_WEIGHT] = { .type = NLA_U32 }, | |
1173 | [IFLA_OPERSTATE] = { .type = NLA_U8 }, | |
1174 | [IFLA_LINKMODE] = { .type = NLA_U8 }, | |
76e87306 | 1175 | [IFLA_LINKINFO] = { .type = NLA_NESTED }, |
d8a5ec67 | 1176 | [IFLA_NET_NS_PID] = { .type = NLA_U32 }, |
f0630529 | 1177 | [IFLA_NET_NS_FD] = { .type = NLA_U32 }, |
0b815a1a | 1178 | [IFLA_IFALIAS] = { .type = NLA_STRING, .len = IFALIASZ-1 }, |
c02db8c6 | 1179 | [IFLA_VFINFO_LIST] = {. type = NLA_NESTED }, |
57b61080 SF |
1180 | [IFLA_VF_PORTS] = { .type = NLA_NESTED }, |
1181 | [IFLA_PORT_SELF] = { .type = NLA_NESTED }, | |
f8ff182c | 1182 | [IFLA_AF_SPEC] = { .type = NLA_NESTED }, |
115c9b81 | 1183 | [IFLA_EXT_MASK] = { .type = NLA_U32 }, |
edbc0bb3 | 1184 | [IFLA_PROMISCUITY] = { .type = NLA_U32 }, |
76ff5cc9 JP |
1185 | [IFLA_NUM_TX_QUEUES] = { .type = NLA_U32 }, |
1186 | [IFLA_NUM_RX_QUEUES] = { .type = NLA_U32 }, | |
66cae9ed | 1187 | [IFLA_PHYS_PORT_ID] = { .type = NLA_BINARY, .len = MAX_PHYS_PORT_ID_LEN }, |
2d3b479d | 1188 | [IFLA_CARRIER_CHANGES] = { .type = NLA_U32 }, /* ignored */ |
da5e0494 TG |
1189 | }; |
1190 | ||
38f7b870 PM |
1191 | static const struct nla_policy ifla_info_policy[IFLA_INFO_MAX+1] = { |
1192 | [IFLA_INFO_KIND] = { .type = NLA_STRING }, | |
1193 | [IFLA_INFO_DATA] = { .type = NLA_NESTED }, | |
ba7d49b1 JP |
1194 | [IFLA_INFO_SLAVE_KIND] = { .type = NLA_STRING }, |
1195 | [IFLA_INFO_SLAVE_DATA] = { .type = NLA_NESTED }, | |
38f7b870 PM |
1196 | }; |
1197 | ||
c02db8c6 CW |
1198 | static const struct nla_policy ifla_vfinfo_policy[IFLA_VF_INFO_MAX+1] = { |
1199 | [IFLA_VF_INFO] = { .type = NLA_NESTED }, | |
1200 | }; | |
1201 | ||
1202 | static const struct nla_policy ifla_vf_policy[IFLA_VF_MAX+1] = { | |
1203 | [IFLA_VF_MAC] = { .type = NLA_BINARY, | |
1204 | .len = sizeof(struct ifla_vf_mac) }, | |
1205 | [IFLA_VF_VLAN] = { .type = NLA_BINARY, | |
1206 | .len = sizeof(struct ifla_vf_vlan) }, | |
1207 | [IFLA_VF_TX_RATE] = { .type = NLA_BINARY, | |
1208 | .len = sizeof(struct ifla_vf_tx_rate) }, | |
48752f65 GR |
1209 | [IFLA_VF_SPOOFCHK] = { .type = NLA_BINARY, |
1210 | .len = sizeof(struct ifla_vf_spoofchk) }, | |
c02db8c6 CW |
1211 | }; |
1212 | ||
57b61080 SF |
1213 | static const struct nla_policy ifla_port_policy[IFLA_PORT_MAX+1] = { |
1214 | [IFLA_PORT_VF] = { .type = NLA_U32 }, | |
1215 | [IFLA_PORT_PROFILE] = { .type = NLA_STRING, | |
1216 | .len = PORT_PROFILE_MAX }, | |
1217 | [IFLA_PORT_VSI_TYPE] = { .type = NLA_BINARY, | |
1218 | .len = sizeof(struct ifla_port_vsi)}, | |
1219 | [IFLA_PORT_INSTANCE_UUID] = { .type = NLA_BINARY, | |
1220 | .len = PORT_UUID_MAX }, | |
1221 | [IFLA_PORT_HOST_UUID] = { .type = NLA_STRING, | |
1222 | .len = PORT_UUID_MAX }, | |
1223 | [IFLA_PORT_REQUEST] = { .type = NLA_U8, }, | |
1224 | [IFLA_PORT_RESPONSE] = { .type = NLA_U16, }, | |
1225 | }; | |
1226 | ||
f7b12606 JP |
1227 | static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb) |
1228 | { | |
1229 | struct net *net = sock_net(skb->sk); | |
1230 | int h, s_h; | |
1231 | int idx = 0, s_idx; | |
1232 | struct net_device *dev; | |
1233 | struct hlist_head *head; | |
1234 | struct nlattr *tb[IFLA_MAX+1]; | |
1235 | u32 ext_filter_mask = 0; | |
973462bb | 1236 | int err; |
f7b12606 JP |
1237 | |
1238 | s_h = cb->args[0]; | |
1239 | s_idx = cb->args[1]; | |
1240 | ||
1241 | rcu_read_lock(); | |
1242 | cb->seq = net->dev_base_seq; | |
1243 | ||
1244 | if (nlmsg_parse(cb->nlh, sizeof(struct ifinfomsg), tb, IFLA_MAX, | |
1245 | ifla_policy) >= 0) { | |
1246 | ||
1247 | if (tb[IFLA_EXT_MASK]) | |
1248 | ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]); | |
1249 | } | |
1250 | ||
1251 | for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) { | |
1252 | idx = 0; | |
1253 | head = &net->dev_index_head[h]; | |
1254 | hlist_for_each_entry_rcu(dev, head, index_hlist) { | |
1255 | if (idx < s_idx) | |
1256 | goto cont; | |
973462bb DG |
1257 | err = rtnl_fill_ifinfo(skb, dev, RTM_NEWLINK, |
1258 | NETLINK_CB(cb->skb).portid, | |
1259 | cb->nlh->nlmsg_seq, 0, | |
1260 | NLM_F_MULTI, | |
1261 | ext_filter_mask); | |
1262 | /* If we ran out of room on the first message, | |
1263 | * we're in trouble | |
1264 | */ | |
1265 | WARN_ON((err == -EMSGSIZE) && (skb->len == 0)); | |
1266 | ||
1267 | if (err <= 0) | |
f7b12606 JP |
1268 | goto out; |
1269 | ||
1270 | nl_dump_check_consistent(cb, nlmsg_hdr(skb)); | |
1271 | cont: | |
1272 | idx++; | |
1273 | } | |
1274 | } | |
1275 | out: | |
1276 | rcu_read_unlock(); | |
1277 | cb->args[1] = idx; | |
1278 | cb->args[0] = h; | |
1279 | ||
1280 | return skb->len; | |
1281 | } | |
1282 | ||
1283 | int rtnl_nla_parse_ifla(struct nlattr **tb, const struct nlattr *head, int len) | |
1284 | { | |
1285 | return nla_parse(tb, IFLA_MAX, head, len, ifla_policy); | |
1286 | } | |
1287 | EXPORT_SYMBOL(rtnl_nla_parse_ifla); | |
1288 | ||
81adee47 EB |
1289 | struct net *rtnl_link_get_net(struct net *src_net, struct nlattr *tb[]) |
1290 | { | |
1291 | struct net *net; | |
1292 | /* Examine the link attributes and figure out which | |
1293 | * network namespace we are talking about. | |
1294 | */ | |
1295 | if (tb[IFLA_NET_NS_PID]) | |
1296 | net = get_net_ns_by_pid(nla_get_u32(tb[IFLA_NET_NS_PID])); | |
f0630529 EB |
1297 | else if (tb[IFLA_NET_NS_FD]) |
1298 | net = get_net_ns_by_fd(nla_get_u32(tb[IFLA_NET_NS_FD])); | |
81adee47 EB |
1299 | else |
1300 | net = get_net(src_net); | |
1301 | return net; | |
1302 | } | |
1303 | EXPORT_SYMBOL(rtnl_link_get_net); | |
1304 | ||
1840bb13 TG |
1305 | static int validate_linkmsg(struct net_device *dev, struct nlattr *tb[]) |
1306 | { | |
1307 | if (dev) { | |
1308 | if (tb[IFLA_ADDRESS] && | |
1309 | nla_len(tb[IFLA_ADDRESS]) < dev->addr_len) | |
1310 | return -EINVAL; | |
1311 | ||
1312 | if (tb[IFLA_BROADCAST] && | |
1313 | nla_len(tb[IFLA_BROADCAST]) < dev->addr_len) | |
1314 | return -EINVAL; | |
1315 | } | |
1316 | ||
cf7afbfe TG |
1317 | if (tb[IFLA_AF_SPEC]) { |
1318 | struct nlattr *af; | |
1319 | int rem, err; | |
1320 | ||
1321 | nla_for_each_nested(af, tb[IFLA_AF_SPEC], rem) { | |
1322 | const struct rtnl_af_ops *af_ops; | |
1323 | ||
1324 | if (!(af_ops = rtnl_af_lookup(nla_type(af)))) | |
1325 | return -EAFNOSUPPORT; | |
1326 | ||
1327 | if (!af_ops->set_link_af) | |
1328 | return -EOPNOTSUPP; | |
1329 | ||
1330 | if (af_ops->validate_link_af) { | |
6d3a9a68 | 1331 | err = af_ops->validate_link_af(dev, af); |
cf7afbfe TG |
1332 | if (err < 0) |
1333 | return err; | |
1334 | } | |
1335 | } | |
1336 | } | |
1337 | ||
1840bb13 TG |
1338 | return 0; |
1339 | } | |
1340 | ||
c02db8c6 CW |
1341 | static int do_setvfinfo(struct net_device *dev, struct nlattr *attr) |
1342 | { | |
1343 | int rem, err = -EINVAL; | |
1344 | struct nlattr *vf; | |
1345 | const struct net_device_ops *ops = dev->netdev_ops; | |
1346 | ||
1347 | nla_for_each_nested(vf, attr, rem) { | |
1348 | switch (nla_type(vf)) { | |
1349 | case IFLA_VF_MAC: { | |
1350 | struct ifla_vf_mac *ivm; | |
1351 | ivm = nla_data(vf); | |
1352 | err = -EOPNOTSUPP; | |
1353 | if (ops->ndo_set_vf_mac) | |
1354 | err = ops->ndo_set_vf_mac(dev, ivm->vf, | |
1355 | ivm->mac); | |
1356 | break; | |
1357 | } | |
1358 | case IFLA_VF_VLAN: { | |
1359 | struct ifla_vf_vlan *ivv; | |
1360 | ivv = nla_data(vf); | |
1361 | err = -EOPNOTSUPP; | |
1362 | if (ops->ndo_set_vf_vlan) | |
1363 | err = ops->ndo_set_vf_vlan(dev, ivv->vf, | |
1364 | ivv->vlan, | |
1365 | ivv->qos); | |
1366 | break; | |
1367 | } | |
1368 | case IFLA_VF_TX_RATE: { | |
1369 | struct ifla_vf_tx_rate *ivt; | |
1370 | ivt = nla_data(vf); | |
1371 | err = -EOPNOTSUPP; | |
1372 | if (ops->ndo_set_vf_tx_rate) | |
1373 | err = ops->ndo_set_vf_tx_rate(dev, ivt->vf, | |
1374 | ivt->rate); | |
1375 | break; | |
1376 | } | |
5f8444a3 GR |
1377 | case IFLA_VF_SPOOFCHK: { |
1378 | struct ifla_vf_spoofchk *ivs; | |
1379 | ivs = nla_data(vf); | |
1380 | err = -EOPNOTSUPP; | |
1381 | if (ops->ndo_set_vf_spoofchk) | |
1382 | err = ops->ndo_set_vf_spoofchk(dev, ivs->vf, | |
1383 | ivs->setting); | |
1384 | break; | |
1385 | } | |
1d8faf48 RE |
1386 | case IFLA_VF_LINK_STATE: { |
1387 | struct ifla_vf_link_state *ivl; | |
1388 | ivl = nla_data(vf); | |
1389 | err = -EOPNOTSUPP; | |
1390 | if (ops->ndo_set_vf_link_state) | |
1391 | err = ops->ndo_set_vf_link_state(dev, ivl->vf, | |
1392 | ivl->link_state); | |
1393 | break; | |
1394 | } | |
c02db8c6 CW |
1395 | default: |
1396 | err = -EINVAL; | |
1397 | break; | |
1398 | } | |
1399 | if (err) | |
1400 | break; | |
1401 | } | |
1402 | return err; | |
1403 | } | |
1404 | ||
fbaec0ea JP |
1405 | static int do_set_master(struct net_device *dev, int ifindex) |
1406 | { | |
898e5061 | 1407 | struct net_device *upper_dev = netdev_master_upper_dev_get(dev); |
fbaec0ea JP |
1408 | const struct net_device_ops *ops; |
1409 | int err; | |
1410 | ||
898e5061 JP |
1411 | if (upper_dev) { |
1412 | if (upper_dev->ifindex == ifindex) | |
fbaec0ea | 1413 | return 0; |
898e5061 | 1414 | ops = upper_dev->netdev_ops; |
fbaec0ea | 1415 | if (ops->ndo_del_slave) { |
898e5061 | 1416 | err = ops->ndo_del_slave(upper_dev, dev); |
fbaec0ea JP |
1417 | if (err) |
1418 | return err; | |
1419 | } else { | |
1420 | return -EOPNOTSUPP; | |
1421 | } | |
1422 | } | |
1423 | ||
1424 | if (ifindex) { | |
898e5061 JP |
1425 | upper_dev = __dev_get_by_index(dev_net(dev), ifindex); |
1426 | if (!upper_dev) | |
fbaec0ea | 1427 | return -EINVAL; |
898e5061 | 1428 | ops = upper_dev->netdev_ops; |
fbaec0ea | 1429 | if (ops->ndo_add_slave) { |
898e5061 | 1430 | err = ops->ndo_add_slave(upper_dev, dev); |
fbaec0ea JP |
1431 | if (err) |
1432 | return err; | |
1433 | } else { | |
1434 | return -EOPNOTSUPP; | |
1435 | } | |
1436 | } | |
1437 | return 0; | |
1438 | } | |
1439 | ||
90f62cf3 EB |
1440 | static int do_setlink(const struct sk_buff *skb, |
1441 | struct net_device *dev, struct ifinfomsg *ifm, | |
38f7b870 | 1442 | struct nlattr **tb, char *ifname, int modified) |
1da177e4 | 1443 | { |
d314774c | 1444 | const struct net_device_ops *ops = dev->netdev_ops; |
0157f60c | 1445 | int err; |
1da177e4 | 1446 | |
f0630529 | 1447 | if (tb[IFLA_NET_NS_PID] || tb[IFLA_NET_NS_FD]) { |
81adee47 | 1448 | struct net *net = rtnl_link_get_net(dev_net(dev), tb); |
d8a5ec67 EB |
1449 | if (IS_ERR(net)) { |
1450 | err = PTR_ERR(net); | |
1451 | goto errout; | |
1452 | } | |
90f62cf3 | 1453 | if (!netlink_ns_capable(skb, net->user_ns, CAP_NET_ADMIN)) { |
b51642f6 EB |
1454 | err = -EPERM; |
1455 | goto errout; | |
1456 | } | |
d8a5ec67 EB |
1457 | err = dev_change_net_namespace(dev, net, ifname); |
1458 | put_net(net); | |
1459 | if (err) | |
1460 | goto errout; | |
1461 | modified = 1; | |
1462 | } | |
1463 | ||
da5e0494 | 1464 | if (tb[IFLA_MAP]) { |
1da177e4 LT |
1465 | struct rtnl_link_ifmap *u_map; |
1466 | struct ifmap k_map; | |
1467 | ||
d314774c | 1468 | if (!ops->ndo_set_config) { |
1da177e4 | 1469 | err = -EOPNOTSUPP; |
0157f60c | 1470 | goto errout; |
1da177e4 LT |
1471 | } |
1472 | ||
1473 | if (!netif_device_present(dev)) { | |
1474 | err = -ENODEV; | |
0157f60c | 1475 | goto errout; |
1da177e4 | 1476 | } |
1da177e4 | 1477 | |
da5e0494 | 1478 | u_map = nla_data(tb[IFLA_MAP]); |
1da177e4 LT |
1479 | k_map.mem_start = (unsigned long) u_map->mem_start; |
1480 | k_map.mem_end = (unsigned long) u_map->mem_end; | |
1481 | k_map.base_addr = (unsigned short) u_map->base_addr; | |
1482 | k_map.irq = (unsigned char) u_map->irq; | |
1483 | k_map.dma = (unsigned char) u_map->dma; | |
1484 | k_map.port = (unsigned char) u_map->port; | |
1485 | ||
d314774c | 1486 | err = ops->ndo_set_config(dev, &k_map); |
da5e0494 | 1487 | if (err < 0) |
0157f60c | 1488 | goto errout; |
1da177e4 | 1489 | |
da5e0494 | 1490 | modified = 1; |
1da177e4 LT |
1491 | } |
1492 | ||
da5e0494 | 1493 | if (tb[IFLA_ADDRESS]) { |
70f8e78e DM |
1494 | struct sockaddr *sa; |
1495 | int len; | |
1496 | ||
70f8e78e DM |
1497 | len = sizeof(sa_family_t) + dev->addr_len; |
1498 | sa = kmalloc(len, GFP_KERNEL); | |
1499 | if (!sa) { | |
1500 | err = -ENOMEM; | |
0157f60c | 1501 | goto errout; |
70f8e78e DM |
1502 | } |
1503 | sa->sa_family = dev->type; | |
da5e0494 | 1504 | memcpy(sa->sa_data, nla_data(tb[IFLA_ADDRESS]), |
70f8e78e | 1505 | dev->addr_len); |
e7c3273e | 1506 | err = dev_set_mac_address(dev, sa); |
70f8e78e | 1507 | kfree(sa); |
1da177e4 | 1508 | if (err) |
0157f60c | 1509 | goto errout; |
da5e0494 | 1510 | modified = 1; |
1da177e4 LT |
1511 | } |
1512 | ||
da5e0494 TG |
1513 | if (tb[IFLA_MTU]) { |
1514 | err = dev_set_mtu(dev, nla_get_u32(tb[IFLA_MTU])); | |
1515 | if (err < 0) | |
0157f60c | 1516 | goto errout; |
da5e0494 | 1517 | modified = 1; |
1da177e4 LT |
1518 | } |
1519 | ||
cbda10fa VD |
1520 | if (tb[IFLA_GROUP]) { |
1521 | dev_set_group(dev, nla_get_u32(tb[IFLA_GROUP])); | |
1522 | modified = 1; | |
1523 | } | |
1524 | ||
da5e0494 TG |
1525 | /* |
1526 | * Interface selected by interface index but interface | |
1527 | * name provided implies that a name change has been | |
1528 | * requested. | |
1529 | */ | |
51055be8 | 1530 | if (ifm->ifi_index > 0 && ifname[0]) { |
da5e0494 TG |
1531 | err = dev_change_name(dev, ifname); |
1532 | if (err < 0) | |
0157f60c | 1533 | goto errout; |
da5e0494 | 1534 | modified = 1; |
1da177e4 LT |
1535 | } |
1536 | ||
0b815a1a SH |
1537 | if (tb[IFLA_IFALIAS]) { |
1538 | err = dev_set_alias(dev, nla_data(tb[IFLA_IFALIAS]), | |
1539 | nla_len(tb[IFLA_IFALIAS])); | |
1540 | if (err < 0) | |
1541 | goto errout; | |
1542 | modified = 1; | |
1543 | } | |
1544 | ||
da5e0494 TG |
1545 | if (tb[IFLA_BROADCAST]) { |
1546 | nla_memcpy(dev->broadcast, tb[IFLA_BROADCAST], dev->addr_len); | |
e7c3273e | 1547 | call_netdevice_notifiers(NETDEV_CHANGEADDR, dev); |
1da177e4 LT |
1548 | } |
1549 | ||
83b496e9 | 1550 | if (ifm->ifi_flags || ifm->ifi_change) { |
3729d502 | 1551 | err = dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm)); |
5f9021cf JB |
1552 | if (err < 0) |
1553 | goto errout; | |
83b496e9 | 1554 | } |
1da177e4 | 1555 | |
fbaec0ea JP |
1556 | if (tb[IFLA_MASTER]) { |
1557 | err = do_set_master(dev, nla_get_u32(tb[IFLA_MASTER])); | |
1558 | if (err) | |
1559 | goto errout; | |
1560 | modified = 1; | |
1561 | } | |
1562 | ||
9a57247f JP |
1563 | if (tb[IFLA_CARRIER]) { |
1564 | err = dev_change_carrier(dev, nla_get_u8(tb[IFLA_CARRIER])); | |
1565 | if (err) | |
1566 | goto errout; | |
1567 | modified = 1; | |
1568 | } | |
1569 | ||
93b2d4a2 DM |
1570 | if (tb[IFLA_TXQLEN]) |
1571 | dev->tx_queue_len = nla_get_u32(tb[IFLA_TXQLEN]); | |
b00055aa | 1572 | |
da5e0494 | 1573 | if (tb[IFLA_OPERSTATE]) |
93b2d4a2 | 1574 | set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE])); |
b00055aa | 1575 | |
da5e0494 | 1576 | if (tb[IFLA_LINKMODE]) { |
93b2d4a2 DM |
1577 | write_lock_bh(&dev_base_lock); |
1578 | dev->link_mode = nla_get_u8(tb[IFLA_LINKMODE]); | |
1579 | write_unlock_bh(&dev_base_lock); | |
b00055aa SR |
1580 | } |
1581 | ||
c02db8c6 CW |
1582 | if (tb[IFLA_VFINFO_LIST]) { |
1583 | struct nlattr *attr; | |
1584 | int rem; | |
1585 | nla_for_each_nested(attr, tb[IFLA_VFINFO_LIST], rem) { | |
253683bb DH |
1586 | if (nla_type(attr) != IFLA_VF_INFO) { |
1587 | err = -EINVAL; | |
c02db8c6 | 1588 | goto errout; |
253683bb | 1589 | } |
c02db8c6 CW |
1590 | err = do_setvfinfo(dev, attr); |
1591 | if (err < 0) | |
1592 | goto errout; | |
1593 | modified = 1; | |
1594 | } | |
ebc08a6f | 1595 | } |
1da177e4 LT |
1596 | err = 0; |
1597 | ||
57b61080 SF |
1598 | if (tb[IFLA_VF_PORTS]) { |
1599 | struct nlattr *port[IFLA_PORT_MAX+1]; | |
1600 | struct nlattr *attr; | |
1601 | int vf; | |
1602 | int rem; | |
1603 | ||
1604 | err = -EOPNOTSUPP; | |
1605 | if (!ops->ndo_set_vf_port) | |
1606 | goto errout; | |
1607 | ||
1608 | nla_for_each_nested(attr, tb[IFLA_VF_PORTS], rem) { | |
1609 | if (nla_type(attr) != IFLA_VF_PORT) | |
1610 | continue; | |
1611 | err = nla_parse_nested(port, IFLA_PORT_MAX, | |
1612 | attr, ifla_port_policy); | |
1613 | if (err < 0) | |
1614 | goto errout; | |
1615 | if (!port[IFLA_PORT_VF]) { | |
1616 | err = -EOPNOTSUPP; | |
1617 | goto errout; | |
1618 | } | |
1619 | vf = nla_get_u32(port[IFLA_PORT_VF]); | |
1620 | err = ops->ndo_set_vf_port(dev, vf, port); | |
1621 | if (err < 0) | |
1622 | goto errout; | |
1623 | modified = 1; | |
1624 | } | |
1625 | } | |
1626 | err = 0; | |
1627 | ||
1628 | if (tb[IFLA_PORT_SELF]) { | |
1629 | struct nlattr *port[IFLA_PORT_MAX+1]; | |
1630 | ||
1631 | err = nla_parse_nested(port, IFLA_PORT_MAX, | |
1632 | tb[IFLA_PORT_SELF], ifla_port_policy); | |
1633 | if (err < 0) | |
1634 | goto errout; | |
1635 | ||
1636 | err = -EOPNOTSUPP; | |
1637 | if (ops->ndo_set_vf_port) | |
1638 | err = ops->ndo_set_vf_port(dev, PORT_SELF_VF, port); | |
1639 | if (err < 0) | |
1640 | goto errout; | |
1641 | modified = 1; | |
1642 | } | |
f8ff182c TG |
1643 | |
1644 | if (tb[IFLA_AF_SPEC]) { | |
1645 | struct nlattr *af; | |
1646 | int rem; | |
1647 | ||
1648 | nla_for_each_nested(af, tb[IFLA_AF_SPEC], rem) { | |
1649 | const struct rtnl_af_ops *af_ops; | |
1650 | ||
1651 | if (!(af_ops = rtnl_af_lookup(nla_type(af)))) | |
cf7afbfe | 1652 | BUG(); |
f8ff182c | 1653 | |
cf7afbfe | 1654 | err = af_ops->set_link_af(dev, af); |
f8ff182c TG |
1655 | if (err < 0) |
1656 | goto errout; | |
1657 | ||
1658 | modified = 1; | |
1659 | } | |
1660 | } | |
57b61080 SF |
1661 | err = 0; |
1662 | ||
0157f60c | 1663 | errout: |
e87cc472 JP |
1664 | if (err < 0 && modified) |
1665 | net_warn_ratelimited("A link change request failed with some changes committed already. Interface %s may have been left with an inconsistent configuration, please check.\n", | |
1666 | dev->name); | |
da5e0494 | 1667 | |
0157f60c PM |
1668 | return err; |
1669 | } | |
1da177e4 | 1670 | |
661d2967 | 1671 | static int rtnl_setlink(struct sk_buff *skb, struct nlmsghdr *nlh) |
0157f60c | 1672 | { |
3b1e0a65 | 1673 | struct net *net = sock_net(skb->sk); |
0157f60c PM |
1674 | struct ifinfomsg *ifm; |
1675 | struct net_device *dev; | |
1676 | int err; | |
1677 | struct nlattr *tb[IFLA_MAX+1]; | |
1678 | char ifname[IFNAMSIZ]; | |
1679 | ||
1680 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); | |
1681 | if (err < 0) | |
1682 | goto errout; | |
1683 | ||
1684 | if (tb[IFLA_IFNAME]) | |
1685 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
1686 | else | |
1687 | ifname[0] = '\0'; | |
1688 | ||
1689 | err = -EINVAL; | |
1690 | ifm = nlmsg_data(nlh); | |
1691 | if (ifm->ifi_index > 0) | |
a3d12891 | 1692 | dev = __dev_get_by_index(net, ifm->ifi_index); |
0157f60c | 1693 | else if (tb[IFLA_IFNAME]) |
a3d12891 | 1694 | dev = __dev_get_by_name(net, ifname); |
0157f60c PM |
1695 | else |
1696 | goto errout; | |
1697 | ||
1698 | if (dev == NULL) { | |
1699 | err = -ENODEV; | |
1700 | goto errout; | |
1701 | } | |
1702 | ||
e0d087af ED |
1703 | err = validate_linkmsg(dev, tb); |
1704 | if (err < 0) | |
a3d12891 | 1705 | goto errout; |
0157f60c | 1706 | |
90f62cf3 | 1707 | err = do_setlink(skb, dev, ifm, tb, ifname, 0); |
da5e0494 | 1708 | errout: |
1da177e4 LT |
1709 | return err; |
1710 | } | |
1711 | ||
661d2967 | 1712 | static int rtnl_dellink(struct sk_buff *skb, struct nlmsghdr *nlh) |
38f7b870 | 1713 | { |
3b1e0a65 | 1714 | struct net *net = sock_net(skb->sk); |
38f7b870 PM |
1715 | const struct rtnl_link_ops *ops; |
1716 | struct net_device *dev; | |
1717 | struct ifinfomsg *ifm; | |
1718 | char ifname[IFNAMSIZ]; | |
1719 | struct nlattr *tb[IFLA_MAX+1]; | |
1720 | int err; | |
226bd341 | 1721 | LIST_HEAD(list_kill); |
38f7b870 PM |
1722 | |
1723 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); | |
1724 | if (err < 0) | |
1725 | return err; | |
1726 | ||
1727 | if (tb[IFLA_IFNAME]) | |
1728 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
1729 | ||
1730 | ifm = nlmsg_data(nlh); | |
1731 | if (ifm->ifi_index > 0) | |
881d966b | 1732 | dev = __dev_get_by_index(net, ifm->ifi_index); |
38f7b870 | 1733 | else if (tb[IFLA_IFNAME]) |
881d966b | 1734 | dev = __dev_get_by_name(net, ifname); |
38f7b870 PM |
1735 | else |
1736 | return -EINVAL; | |
1737 | ||
1738 | if (!dev) | |
1739 | return -ENODEV; | |
1740 | ||
1741 | ops = dev->rtnl_link_ops; | |
1742 | if (!ops) | |
1743 | return -EOPNOTSUPP; | |
1744 | ||
226bd341 ED |
1745 | ops->dellink(dev, &list_kill); |
1746 | unregister_netdevice_many(&list_kill); | |
1747 | list_del(&list_kill); | |
38f7b870 PM |
1748 | return 0; |
1749 | } | |
1750 | ||
3729d502 PM |
1751 | int rtnl_configure_link(struct net_device *dev, const struct ifinfomsg *ifm) |
1752 | { | |
1753 | unsigned int old_flags; | |
1754 | int err; | |
1755 | ||
1756 | old_flags = dev->flags; | |
1757 | if (ifm && (ifm->ifi_flags || ifm->ifi_change)) { | |
1758 | err = __dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm)); | |
1759 | if (err < 0) | |
1760 | return err; | |
1761 | } | |
1762 | ||
1763 | dev->rtnl_link_state = RTNL_LINK_INITIALIZED; | |
3729d502 | 1764 | |
a528c219 | 1765 | __dev_notify_flags(dev, old_flags, ~0U); |
3729d502 PM |
1766 | return 0; |
1767 | } | |
1768 | EXPORT_SYMBOL(rtnl_configure_link); | |
1769 | ||
c0713563 | 1770 | struct net_device *rtnl_create_link(struct net *net, |
81adee47 | 1771 | char *ifname, const struct rtnl_link_ops *ops, struct nlattr *tb[]) |
e7199288 PE |
1772 | { |
1773 | int err; | |
1774 | struct net_device *dev; | |
d40156aa JP |
1775 | unsigned int num_tx_queues = 1; |
1776 | unsigned int num_rx_queues = 1; | |
e7199288 | 1777 | |
76ff5cc9 JP |
1778 | if (tb[IFLA_NUM_TX_QUEUES]) |
1779 | num_tx_queues = nla_get_u32(tb[IFLA_NUM_TX_QUEUES]); | |
1780 | else if (ops->get_num_tx_queues) | |
d40156aa | 1781 | num_tx_queues = ops->get_num_tx_queues(); |
76ff5cc9 JP |
1782 | |
1783 | if (tb[IFLA_NUM_RX_QUEUES]) | |
1784 | num_rx_queues = nla_get_u32(tb[IFLA_NUM_RX_QUEUES]); | |
1785 | else if (ops->get_num_rx_queues) | |
d40156aa | 1786 | num_rx_queues = ops->get_num_rx_queues(); |
efacb309 | 1787 | |
e7199288 | 1788 | err = -ENOMEM; |
d40156aa JP |
1789 | dev = alloc_netdev_mqs(ops->priv_size, ifname, ops->setup, |
1790 | num_tx_queues, num_rx_queues); | |
e7199288 PE |
1791 | if (!dev) |
1792 | goto err; | |
1793 | ||
81adee47 EB |
1794 | dev_net_set(dev, net); |
1795 | dev->rtnl_link_ops = ops; | |
3729d502 | 1796 | dev->rtnl_link_state = RTNL_LINK_INITIALIZING; |
81adee47 | 1797 | |
e7199288 PE |
1798 | if (tb[IFLA_MTU]) |
1799 | dev->mtu = nla_get_u32(tb[IFLA_MTU]); | |
2afb9b53 | 1800 | if (tb[IFLA_ADDRESS]) { |
e7199288 PE |
1801 | memcpy(dev->dev_addr, nla_data(tb[IFLA_ADDRESS]), |
1802 | nla_len(tb[IFLA_ADDRESS])); | |
2afb9b53 JP |
1803 | dev->addr_assign_type = NET_ADDR_SET; |
1804 | } | |
e7199288 PE |
1805 | if (tb[IFLA_BROADCAST]) |
1806 | memcpy(dev->broadcast, nla_data(tb[IFLA_BROADCAST]), | |
1807 | nla_len(tb[IFLA_BROADCAST])); | |
1808 | if (tb[IFLA_TXQLEN]) | |
1809 | dev->tx_queue_len = nla_get_u32(tb[IFLA_TXQLEN]); | |
1810 | if (tb[IFLA_OPERSTATE]) | |
93b2d4a2 | 1811 | set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE])); |
e7199288 PE |
1812 | if (tb[IFLA_LINKMODE]) |
1813 | dev->link_mode = nla_get_u8(tb[IFLA_LINKMODE]); | |
ffa934f1 PM |
1814 | if (tb[IFLA_GROUP]) |
1815 | dev_set_group(dev, nla_get_u32(tb[IFLA_GROUP])); | |
e7199288 PE |
1816 | |
1817 | return dev; | |
1818 | ||
e7199288 PE |
1819 | err: |
1820 | return ERR_PTR(err); | |
1821 | } | |
e0d087af | 1822 | EXPORT_SYMBOL(rtnl_create_link); |
e7199288 | 1823 | |
90f62cf3 EB |
1824 | static int rtnl_group_changelink(const struct sk_buff *skb, |
1825 | struct net *net, int group, | |
e7ed828f VD |
1826 | struct ifinfomsg *ifm, |
1827 | struct nlattr **tb) | |
1828 | { | |
1829 | struct net_device *dev; | |
1830 | int err; | |
1831 | ||
1832 | for_each_netdev(net, dev) { | |
1833 | if (dev->group == group) { | |
90f62cf3 | 1834 | err = do_setlink(skb, dev, ifm, tb, NULL, 0); |
e7ed828f VD |
1835 | if (err < 0) |
1836 | return err; | |
1837 | } | |
1838 | } | |
1839 | ||
1840 | return 0; | |
1841 | } | |
1842 | ||
661d2967 | 1843 | static int rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh) |
38f7b870 | 1844 | { |
3b1e0a65 | 1845 | struct net *net = sock_net(skb->sk); |
38f7b870 | 1846 | const struct rtnl_link_ops *ops; |
ba7d49b1 | 1847 | const struct rtnl_link_ops *m_ops = NULL; |
38f7b870 | 1848 | struct net_device *dev; |
ba7d49b1 | 1849 | struct net_device *master_dev = NULL; |
38f7b870 PM |
1850 | struct ifinfomsg *ifm; |
1851 | char kind[MODULE_NAME_LEN]; | |
1852 | char ifname[IFNAMSIZ]; | |
1853 | struct nlattr *tb[IFLA_MAX+1]; | |
1854 | struct nlattr *linkinfo[IFLA_INFO_MAX+1]; | |
1855 | int err; | |
1856 | ||
95a5afca | 1857 | #ifdef CONFIG_MODULES |
38f7b870 | 1858 | replay: |
8072f085 | 1859 | #endif |
38f7b870 PM |
1860 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); |
1861 | if (err < 0) | |
1862 | return err; | |
1863 | ||
1864 | if (tb[IFLA_IFNAME]) | |
1865 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
1866 | else | |
1867 | ifname[0] = '\0'; | |
1868 | ||
1869 | ifm = nlmsg_data(nlh); | |
1870 | if (ifm->ifi_index > 0) | |
881d966b | 1871 | dev = __dev_get_by_index(net, ifm->ifi_index); |
e7ed828f VD |
1872 | else { |
1873 | if (ifname[0]) | |
1874 | dev = __dev_get_by_name(net, ifname); | |
e7ed828f VD |
1875 | else |
1876 | dev = NULL; | |
1877 | } | |
38f7b870 | 1878 | |
ba7d49b1 JP |
1879 | if (dev) { |
1880 | master_dev = netdev_master_upper_dev_get(dev); | |
1881 | if (master_dev) | |
1882 | m_ops = master_dev->rtnl_link_ops; | |
1883 | } | |
1884 | ||
e0d087af ED |
1885 | err = validate_linkmsg(dev, tb); |
1886 | if (err < 0) | |
1840bb13 TG |
1887 | return err; |
1888 | ||
38f7b870 PM |
1889 | if (tb[IFLA_LINKINFO]) { |
1890 | err = nla_parse_nested(linkinfo, IFLA_INFO_MAX, | |
1891 | tb[IFLA_LINKINFO], ifla_info_policy); | |
1892 | if (err < 0) | |
1893 | return err; | |
1894 | } else | |
1895 | memset(linkinfo, 0, sizeof(linkinfo)); | |
1896 | ||
1897 | if (linkinfo[IFLA_INFO_KIND]) { | |
1898 | nla_strlcpy(kind, linkinfo[IFLA_INFO_KIND], sizeof(kind)); | |
1899 | ops = rtnl_link_ops_get(kind); | |
1900 | } else { | |
1901 | kind[0] = '\0'; | |
1902 | ops = NULL; | |
1903 | } | |
1904 | ||
1905 | if (1) { | |
ba7d49b1 JP |
1906 | struct nlattr *attr[ops ? ops->maxtype + 1 : 0]; |
1907 | struct nlattr *slave_attr[m_ops ? m_ops->slave_maxtype + 1 : 0]; | |
1908 | struct nlattr **data = NULL; | |
1909 | struct nlattr **slave_data = NULL; | |
81adee47 | 1910 | struct net *dest_net; |
38f7b870 PM |
1911 | |
1912 | if (ops) { | |
1913 | if (ops->maxtype && linkinfo[IFLA_INFO_DATA]) { | |
1914 | err = nla_parse_nested(attr, ops->maxtype, | |
1915 | linkinfo[IFLA_INFO_DATA], | |
1916 | ops->policy); | |
1917 | if (err < 0) | |
1918 | return err; | |
1919 | data = attr; | |
1920 | } | |
1921 | if (ops->validate) { | |
1922 | err = ops->validate(tb, data); | |
1923 | if (err < 0) | |
1924 | return err; | |
1925 | } | |
1926 | } | |
1927 | ||
ba7d49b1 JP |
1928 | if (m_ops) { |
1929 | if (m_ops->slave_maxtype && | |
1930 | linkinfo[IFLA_INFO_SLAVE_DATA]) { | |
1931 | err = nla_parse_nested(slave_attr, | |
1932 | m_ops->slave_maxtype, | |
1933 | linkinfo[IFLA_INFO_SLAVE_DATA], | |
1934 | m_ops->slave_policy); | |
1935 | if (err < 0) | |
1936 | return err; | |
1937 | slave_data = slave_attr; | |
1938 | } | |
1939 | if (m_ops->slave_validate) { | |
1940 | err = m_ops->slave_validate(tb, slave_data); | |
1941 | if (err < 0) | |
1942 | return err; | |
1943 | } | |
1944 | } | |
1945 | ||
38f7b870 PM |
1946 | if (dev) { |
1947 | int modified = 0; | |
1948 | ||
1949 | if (nlh->nlmsg_flags & NLM_F_EXCL) | |
1950 | return -EEXIST; | |
1951 | if (nlh->nlmsg_flags & NLM_F_REPLACE) | |
1952 | return -EOPNOTSUPP; | |
1953 | ||
1954 | if (linkinfo[IFLA_INFO_DATA]) { | |
1955 | if (!ops || ops != dev->rtnl_link_ops || | |
1956 | !ops->changelink) | |
1957 | return -EOPNOTSUPP; | |
1958 | ||
1959 | err = ops->changelink(dev, tb, data); | |
1960 | if (err < 0) | |
1961 | return err; | |
1962 | modified = 1; | |
1963 | } | |
1964 | ||
ba7d49b1 JP |
1965 | if (linkinfo[IFLA_INFO_SLAVE_DATA]) { |
1966 | if (!m_ops || !m_ops->slave_changelink) | |
1967 | return -EOPNOTSUPP; | |
1968 | ||
1969 | err = m_ops->slave_changelink(master_dev, dev, | |
1970 | tb, slave_data); | |
1971 | if (err < 0) | |
1972 | return err; | |
1973 | modified = 1; | |
1974 | } | |
1975 | ||
90f62cf3 | 1976 | return do_setlink(skb, dev, ifm, tb, ifname, modified); |
38f7b870 PM |
1977 | } |
1978 | ||
ffa934f1 PM |
1979 | if (!(nlh->nlmsg_flags & NLM_F_CREATE)) { |
1980 | if (ifm->ifi_index == 0 && tb[IFLA_GROUP]) | |
90f62cf3 | 1981 | return rtnl_group_changelink(skb, net, |
ffa934f1 PM |
1982 | nla_get_u32(tb[IFLA_GROUP]), |
1983 | ifm, tb); | |
38f7b870 | 1984 | return -ENODEV; |
ffa934f1 | 1985 | } |
38f7b870 | 1986 | |
0e06877c | 1987 | if (tb[IFLA_MAP] || tb[IFLA_MASTER] || tb[IFLA_PROTINFO]) |
38f7b870 PM |
1988 | return -EOPNOTSUPP; |
1989 | ||
1990 | if (!ops) { | |
95a5afca | 1991 | #ifdef CONFIG_MODULES |
38f7b870 PM |
1992 | if (kind[0]) { |
1993 | __rtnl_unlock(); | |
1994 | request_module("rtnl-link-%s", kind); | |
1995 | rtnl_lock(); | |
1996 | ops = rtnl_link_ops_get(kind); | |
1997 | if (ops) | |
1998 | goto replay; | |
1999 | } | |
2000 | #endif | |
2001 | return -EOPNOTSUPP; | |
2002 | } | |
2003 | ||
2004 | if (!ifname[0]) | |
2005 | snprintf(ifname, IFNAMSIZ, "%s%%d", ops->kind); | |
e7199288 | 2006 | |
81adee47 | 2007 | dest_net = rtnl_link_get_net(net, tb); |
13ad1774 EB |
2008 | if (IS_ERR(dest_net)) |
2009 | return PTR_ERR(dest_net); | |
2010 | ||
c0713563 | 2011 | dev = rtnl_create_link(dest_net, ifname, ops, tb); |
9c7dafbf | 2012 | if (IS_ERR(dev)) { |
e7199288 | 2013 | err = PTR_ERR(dev); |
9c7dafbf PE |
2014 | goto out; |
2015 | } | |
2016 | ||
2017 | dev->ifindex = ifm->ifi_index; | |
2018 | ||
0e0eee24 | 2019 | if (ops->newlink) { |
81adee47 | 2020 | err = ops->newlink(net, dev, tb, data); |
0e0eee24 CW |
2021 | /* Drivers should call free_netdev() in ->destructor |
2022 | * and unregister it on failure so that device could be | |
2023 | * finally freed in rtnl_unlock. | |
2024 | */ | |
2025 | if (err < 0) | |
2026 | goto out; | |
2027 | } else { | |
2d85cba2 | 2028 | err = register_netdevice(dev); |
0e0eee24 CW |
2029 | if (err < 0) { |
2030 | free_netdev(dev); | |
2031 | goto out; | |
2032 | } | |
fce9b9be | 2033 | } |
3729d502 PM |
2034 | err = rtnl_configure_link(dev, ifm); |
2035 | if (err < 0) | |
2036 | unregister_netdevice(dev); | |
2037 | out: | |
81adee47 | 2038 | put_net(dest_net); |
38f7b870 PM |
2039 | return err; |
2040 | } | |
2041 | } | |
2042 | ||
661d2967 | 2043 | static int rtnl_getlink(struct sk_buff *skb, struct nlmsghdr* nlh) |
711e2c33 | 2044 | { |
3b1e0a65 | 2045 | struct net *net = sock_net(skb->sk); |
b60c5115 | 2046 | struct ifinfomsg *ifm; |
a3d12891 | 2047 | char ifname[IFNAMSIZ]; |
b60c5115 TG |
2048 | struct nlattr *tb[IFLA_MAX+1]; |
2049 | struct net_device *dev = NULL; | |
2050 | struct sk_buff *nskb; | |
339bf98f | 2051 | int err; |
115c9b81 | 2052 | u32 ext_filter_mask = 0; |
711e2c33 | 2053 | |
b60c5115 TG |
2054 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); |
2055 | if (err < 0) | |
9918f230 | 2056 | return err; |
b60c5115 | 2057 | |
a3d12891 ED |
2058 | if (tb[IFLA_IFNAME]) |
2059 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
2060 | ||
115c9b81 GR |
2061 | if (tb[IFLA_EXT_MASK]) |
2062 | ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]); | |
2063 | ||
b60c5115 | 2064 | ifm = nlmsg_data(nlh); |
a3d12891 ED |
2065 | if (ifm->ifi_index > 0) |
2066 | dev = __dev_get_by_index(net, ifm->ifi_index); | |
2067 | else if (tb[IFLA_IFNAME]) | |
2068 | dev = __dev_get_by_name(net, ifname); | |
2069 | else | |
711e2c33 | 2070 | return -EINVAL; |
711e2c33 | 2071 | |
a3d12891 ED |
2072 | if (dev == NULL) |
2073 | return -ENODEV; | |
2074 | ||
115c9b81 | 2075 | nskb = nlmsg_new(if_nlmsg_size(dev, ext_filter_mask), GFP_KERNEL); |
a3d12891 ED |
2076 | if (nskb == NULL) |
2077 | return -ENOBUFS; | |
b60c5115 | 2078 | |
15e47304 | 2079 | err = rtnl_fill_ifinfo(nskb, dev, RTM_NEWLINK, NETLINK_CB(skb).portid, |
115c9b81 | 2080 | nlh->nlmsg_seq, 0, 0, ext_filter_mask); |
26932566 PM |
2081 | if (err < 0) { |
2082 | /* -EMSGSIZE implies BUG in if_nlmsg_size */ | |
2083 | WARN_ON(err == -EMSGSIZE); | |
2084 | kfree_skb(nskb); | |
a3d12891 | 2085 | } else |
15e47304 | 2086 | err = rtnl_unicast(nskb, net, NETLINK_CB(skb).portid); |
711e2c33 | 2087 | |
b60c5115 | 2088 | return err; |
711e2c33 | 2089 | } |
711e2c33 | 2090 | |
115c9b81 | 2091 | static u16 rtnl_calcit(struct sk_buff *skb, struct nlmsghdr *nlh) |
c7ac8679 | 2092 | { |
115c9b81 GR |
2093 | struct net *net = sock_net(skb->sk); |
2094 | struct net_device *dev; | |
2095 | struct nlattr *tb[IFLA_MAX+1]; | |
2096 | u32 ext_filter_mask = 0; | |
2097 | u16 min_ifinfo_dump_size = 0; | |
2098 | ||
88c5b5ce | 2099 | if (nlmsg_parse(nlh, sizeof(struct ifinfomsg), tb, IFLA_MAX, |
a4b64fbe ED |
2100 | ifla_policy) >= 0) { |
2101 | if (tb[IFLA_EXT_MASK]) | |
2102 | ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]); | |
2103 | } | |
115c9b81 GR |
2104 | |
2105 | if (!ext_filter_mask) | |
2106 | return NLMSG_GOODSIZE; | |
2107 | /* | |
2108 | * traverse the list of net devices and compute the minimum | |
2109 | * buffer size based upon the filter mask. | |
2110 | */ | |
2111 | list_for_each_entry(dev, &net->dev_base_head, dev_list) { | |
2112 | min_ifinfo_dump_size = max_t(u16, min_ifinfo_dump_size, | |
2113 | if_nlmsg_size(dev, | |
2114 | ext_filter_mask)); | |
2115 | } | |
2116 | ||
c7ac8679 GR |
2117 | return min_ifinfo_dump_size; |
2118 | } | |
2119 | ||
42bad1da | 2120 | static int rtnl_dump_all(struct sk_buff *skb, struct netlink_callback *cb) |
1da177e4 LT |
2121 | { |
2122 | int idx; | |
2123 | int s_idx = cb->family; | |
2124 | ||
2125 | if (s_idx == 0) | |
2126 | s_idx = 1; | |
25239cee | 2127 | for (idx = 1; idx <= RTNL_FAMILY_MAX; idx++) { |
1da177e4 LT |
2128 | int type = cb->nlh->nlmsg_type-RTM_BASE; |
2129 | if (idx < s_idx || idx == PF_PACKET) | |
2130 | continue; | |
e2849863 TG |
2131 | if (rtnl_msg_handlers[idx] == NULL || |
2132 | rtnl_msg_handlers[idx][type].dumpit == NULL) | |
1da177e4 | 2133 | continue; |
0465277f | 2134 | if (idx > s_idx) { |
1da177e4 | 2135 | memset(&cb->args[0], 0, sizeof(cb->args)); |
0465277f ND |
2136 | cb->prev_seq = 0; |
2137 | cb->seq = 0; | |
2138 | } | |
e2849863 | 2139 | if (rtnl_msg_handlers[idx][type].dumpit(skb, cb)) |
1da177e4 LT |
2140 | break; |
2141 | } | |
2142 | cb->family = idx; | |
2143 | ||
2144 | return skb->len; | |
2145 | } | |
2146 | ||
7f294054 AS |
2147 | void rtmsg_ifinfo(int type, struct net_device *dev, unsigned int change, |
2148 | gfp_t flags) | |
1da177e4 | 2149 | { |
c346dca1 | 2150 | struct net *net = dev_net(dev); |
1da177e4 | 2151 | struct sk_buff *skb; |
0ec6d3f4 | 2152 | int err = -ENOBUFS; |
c7ac8679 | 2153 | size_t if_info_size; |
1da177e4 | 2154 | |
7f294054 | 2155 | skb = nlmsg_new((if_info_size = if_nlmsg_size(dev, 0)), flags); |
0ec6d3f4 TG |
2156 | if (skb == NULL) |
2157 | goto errout; | |
1da177e4 | 2158 | |
115c9b81 | 2159 | err = rtnl_fill_ifinfo(skb, dev, type, 0, 0, change, 0, 0); |
26932566 PM |
2160 | if (err < 0) { |
2161 | /* -EMSGSIZE implies BUG in if_nlmsg_size() */ | |
2162 | WARN_ON(err == -EMSGSIZE); | |
2163 | kfree_skb(skb); | |
2164 | goto errout; | |
2165 | } | |
7f294054 | 2166 | rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, flags); |
1ce85fe4 | 2167 | return; |
0ec6d3f4 TG |
2168 | errout: |
2169 | if (err < 0) | |
4b3da706 | 2170 | rtnl_set_sk_err(net, RTNLGRP_LINK, err); |
1da177e4 | 2171 | } |
471cb5a3 | 2172 | EXPORT_SYMBOL(rtmsg_ifinfo); |
1da177e4 | 2173 | |
d83b0603 JF |
2174 | static int nlmsg_populate_fdb_fill(struct sk_buff *skb, |
2175 | struct net_device *dev, | |
2176 | u8 *addr, u32 pid, u32 seq, | |
1c104a6b ND |
2177 | int type, unsigned int flags, |
2178 | int nlflags) | |
d83b0603 JF |
2179 | { |
2180 | struct nlmsghdr *nlh; | |
2181 | struct ndmsg *ndm; | |
2182 | ||
1c104a6b | 2183 | nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ndm), nlflags); |
d83b0603 JF |
2184 | if (!nlh) |
2185 | return -EMSGSIZE; | |
2186 | ||
2187 | ndm = nlmsg_data(nlh); | |
2188 | ndm->ndm_family = AF_BRIDGE; | |
2189 | ndm->ndm_pad1 = 0; | |
2190 | ndm->ndm_pad2 = 0; | |
2191 | ndm->ndm_flags = flags; | |
2192 | ndm->ndm_type = 0; | |
2193 | ndm->ndm_ifindex = dev->ifindex; | |
2194 | ndm->ndm_state = NUD_PERMANENT; | |
2195 | ||
2196 | if (nla_put(skb, NDA_LLADDR, ETH_ALEN, addr)) | |
2197 | goto nla_put_failure; | |
2198 | ||
2199 | return nlmsg_end(skb, nlh); | |
2200 | ||
2201 | nla_put_failure: | |
2202 | nlmsg_cancel(skb, nlh); | |
2203 | return -EMSGSIZE; | |
2204 | } | |
2205 | ||
3ff661c3 JF |
2206 | static inline size_t rtnl_fdb_nlmsg_size(void) |
2207 | { | |
2208 | return NLMSG_ALIGN(sizeof(struct ndmsg)) + nla_total_size(ETH_ALEN); | |
2209 | } | |
2210 | ||
2211 | static void rtnl_fdb_notify(struct net_device *dev, u8 *addr, int type) | |
2212 | { | |
2213 | struct net *net = dev_net(dev); | |
2214 | struct sk_buff *skb; | |
2215 | int err = -ENOBUFS; | |
2216 | ||
2217 | skb = nlmsg_new(rtnl_fdb_nlmsg_size(), GFP_ATOMIC); | |
2218 | if (!skb) | |
2219 | goto errout; | |
2220 | ||
1c104a6b | 2221 | err = nlmsg_populate_fdb_fill(skb, dev, addr, 0, 0, type, NTF_SELF, 0); |
3ff661c3 JF |
2222 | if (err < 0) { |
2223 | kfree_skb(skb); | |
2224 | goto errout; | |
2225 | } | |
2226 | ||
2227 | rtnl_notify(skb, net, 0, RTNLGRP_NEIGH, NULL, GFP_ATOMIC); | |
2228 | return; | |
2229 | errout: | |
2230 | rtnl_set_sk_err(net, RTNLGRP_NEIGH, err); | |
2231 | } | |
2232 | ||
090096bf VY |
2233 | /** |
2234 | * ndo_dflt_fdb_add - default netdevice operation to add an FDB entry | |
2235 | */ | |
2236 | int ndo_dflt_fdb_add(struct ndmsg *ndm, | |
2237 | struct nlattr *tb[], | |
2238 | struct net_device *dev, | |
2239 | const unsigned char *addr, | |
2240 | u16 flags) | |
2241 | { | |
2242 | int err = -EINVAL; | |
2243 | ||
2244 | /* If aging addresses are supported device will need to | |
2245 | * implement its own handler for this. | |
2246 | */ | |
2247 | if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) { | |
2248 | pr_info("%s: FDB only supports static addresses\n", dev->name); | |
2249 | return err; | |
2250 | } | |
2251 | ||
2252 | if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr)) | |
2253 | err = dev_uc_add_excl(dev, addr); | |
2254 | else if (is_multicast_ether_addr(addr)) | |
2255 | err = dev_mc_add_excl(dev, addr); | |
2256 | ||
2257 | /* Only return duplicate errors if NLM_F_EXCL is set */ | |
2258 | if (err == -EEXIST && !(flags & NLM_F_EXCL)) | |
2259 | err = 0; | |
2260 | ||
2261 | return err; | |
2262 | } | |
2263 | EXPORT_SYMBOL(ndo_dflt_fdb_add); | |
2264 | ||
661d2967 | 2265 | static int rtnl_fdb_add(struct sk_buff *skb, struct nlmsghdr *nlh) |
77162022 JF |
2266 | { |
2267 | struct net *net = sock_net(skb->sk); | |
77162022 JF |
2268 | struct ndmsg *ndm; |
2269 | struct nlattr *tb[NDA_MAX+1]; | |
2270 | struct net_device *dev; | |
2271 | u8 *addr; | |
2272 | int err; | |
2273 | ||
2274 | err = nlmsg_parse(nlh, sizeof(*ndm), tb, NDA_MAX, NULL); | |
2275 | if (err < 0) | |
2276 | return err; | |
2277 | ||
2278 | ndm = nlmsg_data(nlh); | |
2279 | if (ndm->ndm_ifindex == 0) { | |
2280 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid ifindex\n"); | |
2281 | return -EINVAL; | |
2282 | } | |
2283 | ||
2284 | dev = __dev_get_by_index(net, ndm->ndm_ifindex); | |
2285 | if (dev == NULL) { | |
2286 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with unknown ifindex\n"); | |
2287 | return -ENODEV; | |
2288 | } | |
2289 | ||
2290 | if (!tb[NDA_LLADDR] || nla_len(tb[NDA_LLADDR]) != ETH_ALEN) { | |
2291 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid address\n"); | |
2292 | return -EINVAL; | |
2293 | } | |
2294 | ||
2295 | addr = nla_data(tb[NDA_LLADDR]); | |
77162022 JF |
2296 | |
2297 | err = -EOPNOTSUPP; | |
2298 | ||
2299 | /* Support fdb on master device the net/bridge default case */ | |
2300 | if ((!ndm->ndm_flags || ndm->ndm_flags & NTF_MASTER) && | |
2301 | (dev->priv_flags & IFF_BRIDGE_PORT)) { | |
898e5061 JP |
2302 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
2303 | const struct net_device_ops *ops = br_dev->netdev_ops; | |
2304 | ||
2305 | err = ops->ndo_fdb_add(ndm, tb, dev, addr, nlh->nlmsg_flags); | |
77162022 JF |
2306 | if (err) |
2307 | goto out; | |
2308 | else | |
2309 | ndm->ndm_flags &= ~NTF_MASTER; | |
2310 | } | |
2311 | ||
2312 | /* Embedded bridge, macvlan, and any other device support */ | |
090096bf VY |
2313 | if ((ndm->ndm_flags & NTF_SELF)) { |
2314 | if (dev->netdev_ops->ndo_fdb_add) | |
2315 | err = dev->netdev_ops->ndo_fdb_add(ndm, tb, dev, addr, | |
2316 | nlh->nlmsg_flags); | |
2317 | else | |
2318 | err = ndo_dflt_fdb_add(ndm, tb, dev, addr, | |
2319 | nlh->nlmsg_flags); | |
77162022 | 2320 | |
3ff661c3 JF |
2321 | if (!err) { |
2322 | rtnl_fdb_notify(dev, addr, RTM_NEWNEIGH); | |
77162022 | 2323 | ndm->ndm_flags &= ~NTF_SELF; |
3ff661c3 | 2324 | } |
77162022 JF |
2325 | } |
2326 | out: | |
2327 | return err; | |
2328 | } | |
2329 | ||
090096bf VY |
2330 | /** |
2331 | * ndo_dflt_fdb_del - default netdevice operation to delete an FDB entry | |
2332 | */ | |
2333 | int ndo_dflt_fdb_del(struct ndmsg *ndm, | |
2334 | struct nlattr *tb[], | |
2335 | struct net_device *dev, | |
2336 | const unsigned char *addr) | |
2337 | { | |
2338 | int err = -EOPNOTSUPP; | |
2339 | ||
2340 | /* If aging addresses are supported device will need to | |
2341 | * implement its own handler for this. | |
2342 | */ | |
64535993 | 2343 | if (!(ndm->ndm_state & NUD_PERMANENT)) { |
090096bf VY |
2344 | pr_info("%s: FDB only supports static addresses\n", dev->name); |
2345 | return -EINVAL; | |
2346 | } | |
2347 | ||
2348 | if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr)) | |
2349 | err = dev_uc_del(dev, addr); | |
2350 | else if (is_multicast_ether_addr(addr)) | |
2351 | err = dev_mc_del(dev, addr); | |
2352 | else | |
2353 | err = -EINVAL; | |
2354 | ||
2355 | return err; | |
2356 | } | |
2357 | EXPORT_SYMBOL(ndo_dflt_fdb_del); | |
2358 | ||
661d2967 | 2359 | static int rtnl_fdb_del(struct sk_buff *skb, struct nlmsghdr *nlh) |
77162022 JF |
2360 | { |
2361 | struct net *net = sock_net(skb->sk); | |
2362 | struct ndmsg *ndm; | |
1690be63 | 2363 | struct nlattr *tb[NDA_MAX+1]; |
77162022 JF |
2364 | struct net_device *dev; |
2365 | int err = -EINVAL; | |
2366 | __u8 *addr; | |
2367 | ||
90f62cf3 | 2368 | if (!netlink_capable(skb, CAP_NET_ADMIN)) |
1690be63 VY |
2369 | return -EPERM; |
2370 | ||
2371 | err = nlmsg_parse(nlh, sizeof(*ndm), tb, NDA_MAX, NULL); | |
2372 | if (err < 0) | |
2373 | return err; | |
77162022 JF |
2374 | |
2375 | ndm = nlmsg_data(nlh); | |
2376 | if (ndm->ndm_ifindex == 0) { | |
2377 | pr_info("PF_BRIDGE: RTM_DELNEIGH with invalid ifindex\n"); | |
2378 | return -EINVAL; | |
2379 | } | |
2380 | ||
2381 | dev = __dev_get_by_index(net, ndm->ndm_ifindex); | |
2382 | if (dev == NULL) { | |
2383 | pr_info("PF_BRIDGE: RTM_DELNEIGH with unknown ifindex\n"); | |
2384 | return -ENODEV; | |
2385 | } | |
2386 | ||
1690be63 VY |
2387 | if (!tb[NDA_LLADDR] || nla_len(tb[NDA_LLADDR]) != ETH_ALEN) { |
2388 | pr_info("PF_BRIDGE: RTM_DELNEIGH with invalid address\n"); | |
2389 | return -EINVAL; | |
2390 | } | |
2391 | ||
2392 | addr = nla_data(tb[NDA_LLADDR]); | |
77162022 | 2393 | |
77162022 JF |
2394 | err = -EOPNOTSUPP; |
2395 | ||
2396 | /* Support fdb on master device the net/bridge default case */ | |
2397 | if ((!ndm->ndm_flags || ndm->ndm_flags & NTF_MASTER) && | |
2398 | (dev->priv_flags & IFF_BRIDGE_PORT)) { | |
898e5061 JP |
2399 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
2400 | const struct net_device_ops *ops = br_dev->netdev_ops; | |
77162022 | 2401 | |
898e5061 | 2402 | if (ops->ndo_fdb_del) |
1690be63 | 2403 | err = ops->ndo_fdb_del(ndm, tb, dev, addr); |
77162022 JF |
2404 | |
2405 | if (err) | |
2406 | goto out; | |
2407 | else | |
2408 | ndm->ndm_flags &= ~NTF_MASTER; | |
2409 | } | |
2410 | ||
2411 | /* Embedded bridge, macvlan, and any other device support */ | |
090096bf VY |
2412 | if (ndm->ndm_flags & NTF_SELF) { |
2413 | if (dev->netdev_ops->ndo_fdb_del) | |
2414 | err = dev->netdev_ops->ndo_fdb_del(ndm, tb, dev, addr); | |
2415 | else | |
2416 | err = ndo_dflt_fdb_del(ndm, tb, dev, addr); | |
77162022 | 2417 | |
3ff661c3 JF |
2418 | if (!err) { |
2419 | rtnl_fdb_notify(dev, addr, RTM_DELNEIGH); | |
77162022 | 2420 | ndm->ndm_flags &= ~NTF_SELF; |
3ff661c3 | 2421 | } |
77162022 JF |
2422 | } |
2423 | out: | |
2424 | return err; | |
2425 | } | |
2426 | ||
d83b0603 JF |
2427 | static int nlmsg_populate_fdb(struct sk_buff *skb, |
2428 | struct netlink_callback *cb, | |
2429 | struct net_device *dev, | |
2430 | int *idx, | |
2431 | struct netdev_hw_addr_list *list) | |
2432 | { | |
2433 | struct netdev_hw_addr *ha; | |
2434 | int err; | |
15e47304 | 2435 | u32 portid, seq; |
d83b0603 | 2436 | |
15e47304 | 2437 | portid = NETLINK_CB(cb->skb).portid; |
d83b0603 JF |
2438 | seq = cb->nlh->nlmsg_seq; |
2439 | ||
2440 | list_for_each_entry(ha, &list->list, list) { | |
2441 | if (*idx < cb->args[0]) | |
2442 | goto skip; | |
2443 | ||
2444 | err = nlmsg_populate_fdb_fill(skb, dev, ha->addr, | |
a7a558fe | 2445 | portid, seq, |
1c104a6b ND |
2446 | RTM_NEWNEIGH, NTF_SELF, |
2447 | NLM_F_MULTI); | |
d83b0603 JF |
2448 | if (err < 0) |
2449 | return err; | |
2450 | skip: | |
2451 | *idx += 1; | |
2452 | } | |
2453 | return 0; | |
2454 | } | |
2455 | ||
2456 | /** | |
2c53040f | 2457 | * ndo_dflt_fdb_dump - default netdevice operation to dump an FDB table. |
d83b0603 JF |
2458 | * @nlh: netlink message header |
2459 | * @dev: netdevice | |
2460 | * | |
2461 | * Default netdevice operation to dump the existing unicast address list. | |
91f3e7b1 | 2462 | * Returns number of addresses from list put in skb. |
d83b0603 JF |
2463 | */ |
2464 | int ndo_dflt_fdb_dump(struct sk_buff *skb, | |
2465 | struct netlink_callback *cb, | |
2466 | struct net_device *dev, | |
2467 | int idx) | |
2468 | { | |
2469 | int err; | |
2470 | ||
2471 | netif_addr_lock_bh(dev); | |
2472 | err = nlmsg_populate_fdb(skb, cb, dev, &idx, &dev->uc); | |
2473 | if (err) | |
2474 | goto out; | |
2475 | nlmsg_populate_fdb(skb, cb, dev, &idx, &dev->mc); | |
2476 | out: | |
2477 | netif_addr_unlock_bh(dev); | |
2478 | return idx; | |
2479 | } | |
2480 | EXPORT_SYMBOL(ndo_dflt_fdb_dump); | |
2481 | ||
77162022 JF |
2482 | static int rtnl_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb) |
2483 | { | |
2484 | int idx = 0; | |
2485 | struct net *net = sock_net(skb->sk); | |
2486 | struct net_device *dev; | |
2487 | ||
2488 | rcu_read_lock(); | |
2489 | for_each_netdev_rcu(net, dev) { | |
2490 | if (dev->priv_flags & IFF_BRIDGE_PORT) { | |
898e5061 JP |
2491 | struct net_device *br_dev; |
2492 | const struct net_device_ops *ops; | |
77162022 | 2493 | |
898e5061 JP |
2494 | br_dev = netdev_master_upper_dev_get(dev); |
2495 | ops = br_dev->netdev_ops; | |
77162022 JF |
2496 | if (ops->ndo_fdb_dump) |
2497 | idx = ops->ndo_fdb_dump(skb, cb, dev, idx); | |
2498 | } | |
2499 | ||
2500 | if (dev->netdev_ops->ndo_fdb_dump) | |
2501 | idx = dev->netdev_ops->ndo_fdb_dump(skb, cb, dev, idx); | |
090096bf | 2502 | else |
91f3e7b1 | 2503 | idx = ndo_dflt_fdb_dump(skb, cb, dev, idx); |
77162022 JF |
2504 | } |
2505 | rcu_read_unlock(); | |
2506 | ||
2507 | cb->args[0] = idx; | |
2508 | return skb->len; | |
2509 | } | |
2510 | ||
815cccbf JF |
2511 | int ndo_dflt_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq, |
2512 | struct net_device *dev, u16 mode) | |
2513 | { | |
2514 | struct nlmsghdr *nlh; | |
2515 | struct ifinfomsg *ifm; | |
2516 | struct nlattr *br_afspec; | |
2517 | u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN; | |
898e5061 | 2518 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
815cccbf JF |
2519 | |
2520 | nlh = nlmsg_put(skb, pid, seq, RTM_NEWLINK, sizeof(*ifm), NLM_F_MULTI); | |
2521 | if (nlh == NULL) | |
2522 | return -EMSGSIZE; | |
2523 | ||
2524 | ifm = nlmsg_data(nlh); | |
2525 | ifm->ifi_family = AF_BRIDGE; | |
2526 | ifm->__ifi_pad = 0; | |
2527 | ifm->ifi_type = dev->type; | |
2528 | ifm->ifi_index = dev->ifindex; | |
2529 | ifm->ifi_flags = dev_get_flags(dev); | |
2530 | ifm->ifi_change = 0; | |
2531 | ||
2532 | ||
2533 | if (nla_put_string(skb, IFLA_IFNAME, dev->name) || | |
2534 | nla_put_u32(skb, IFLA_MTU, dev->mtu) || | |
2535 | nla_put_u8(skb, IFLA_OPERSTATE, operstate) || | |
898e5061 JP |
2536 | (br_dev && |
2537 | nla_put_u32(skb, IFLA_MASTER, br_dev->ifindex)) || | |
815cccbf JF |
2538 | (dev->addr_len && |
2539 | nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) || | |
2540 | (dev->ifindex != dev->iflink && | |
2541 | nla_put_u32(skb, IFLA_LINK, dev->iflink))) | |
2542 | goto nla_put_failure; | |
2543 | ||
2544 | br_afspec = nla_nest_start(skb, IFLA_AF_SPEC); | |
2545 | if (!br_afspec) | |
2546 | goto nla_put_failure; | |
2547 | ||
2548 | if (nla_put_u16(skb, IFLA_BRIDGE_FLAGS, BRIDGE_FLAGS_SELF) || | |
2549 | nla_put_u16(skb, IFLA_BRIDGE_MODE, mode)) { | |
2550 | nla_nest_cancel(skb, br_afspec); | |
2551 | goto nla_put_failure; | |
2552 | } | |
2553 | nla_nest_end(skb, br_afspec); | |
2554 | ||
2555 | return nlmsg_end(skb, nlh); | |
2556 | nla_put_failure: | |
2557 | nlmsg_cancel(skb, nlh); | |
2558 | return -EMSGSIZE; | |
2559 | } | |
2560 | EXPORT_SYMBOL(ndo_dflt_bridge_getlink); | |
2561 | ||
e5a55a89 JF |
2562 | static int rtnl_bridge_getlink(struct sk_buff *skb, struct netlink_callback *cb) |
2563 | { | |
2564 | struct net *net = sock_net(skb->sk); | |
2565 | struct net_device *dev; | |
2566 | int idx = 0; | |
2567 | u32 portid = NETLINK_CB(cb->skb).portid; | |
2568 | u32 seq = cb->nlh->nlmsg_seq; | |
6cbdceeb VY |
2569 | struct nlattr *extfilt; |
2570 | u32 filter_mask = 0; | |
2571 | ||
3e805ad2 | 2572 | extfilt = nlmsg_find_attr(cb->nlh, sizeof(struct ifinfomsg), |
6cbdceeb VY |
2573 | IFLA_EXT_MASK); |
2574 | if (extfilt) | |
2575 | filter_mask = nla_get_u32(extfilt); | |
e5a55a89 JF |
2576 | |
2577 | rcu_read_lock(); | |
2578 | for_each_netdev_rcu(net, dev) { | |
2579 | const struct net_device_ops *ops = dev->netdev_ops; | |
898e5061 | 2580 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
e5a55a89 | 2581 | |
898e5061 | 2582 | if (br_dev && br_dev->netdev_ops->ndo_bridge_getlink) { |
25b1e679 | 2583 | if (idx >= cb->args[0] && |
898e5061 | 2584 | br_dev->netdev_ops->ndo_bridge_getlink( |
6cbdceeb | 2585 | skb, portid, seq, dev, filter_mask) < 0) |
e5a55a89 | 2586 | break; |
25b1e679 | 2587 | idx++; |
e5a55a89 JF |
2588 | } |
2589 | ||
2590 | if (ops->ndo_bridge_getlink) { | |
25b1e679 | 2591 | if (idx >= cb->args[0] && |
6cbdceeb VY |
2592 | ops->ndo_bridge_getlink(skb, portid, seq, dev, |
2593 | filter_mask) < 0) | |
e5a55a89 | 2594 | break; |
25b1e679 | 2595 | idx++; |
e5a55a89 JF |
2596 | } |
2597 | } | |
2598 | rcu_read_unlock(); | |
2599 | cb->args[0] = idx; | |
2600 | ||
2601 | return skb->len; | |
2602 | } | |
2603 | ||
2469ffd7 JF |
2604 | static inline size_t bridge_nlmsg_size(void) |
2605 | { | |
2606 | return NLMSG_ALIGN(sizeof(struct ifinfomsg)) | |
2607 | + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */ | |
2608 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */ | |
2609 | + nla_total_size(sizeof(u32)) /* IFLA_MASTER */ | |
2610 | + nla_total_size(sizeof(u32)) /* IFLA_MTU */ | |
2611 | + nla_total_size(sizeof(u32)) /* IFLA_LINK */ | |
2612 | + nla_total_size(sizeof(u32)) /* IFLA_OPERSTATE */ | |
2613 | + nla_total_size(sizeof(u8)) /* IFLA_PROTINFO */ | |
2614 | + nla_total_size(sizeof(struct nlattr)) /* IFLA_AF_SPEC */ | |
2615 | + nla_total_size(sizeof(u16)) /* IFLA_BRIDGE_FLAGS */ | |
2616 | + nla_total_size(sizeof(u16)); /* IFLA_BRIDGE_MODE */ | |
2617 | } | |
2618 | ||
2619 | static int rtnl_bridge_notify(struct net_device *dev, u16 flags) | |
2620 | { | |
2621 | struct net *net = dev_net(dev); | |
898e5061 | 2622 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
2469ffd7 JF |
2623 | struct sk_buff *skb; |
2624 | int err = -EOPNOTSUPP; | |
2625 | ||
2626 | skb = nlmsg_new(bridge_nlmsg_size(), GFP_ATOMIC); | |
2627 | if (!skb) { | |
2628 | err = -ENOMEM; | |
2629 | goto errout; | |
2630 | } | |
2631 | ||
c38e01b8 | 2632 | if ((!flags || (flags & BRIDGE_FLAGS_MASTER)) && |
898e5061 | 2633 | br_dev && br_dev->netdev_ops->ndo_bridge_getlink) { |
6cbdceeb | 2634 | err = br_dev->netdev_ops->ndo_bridge_getlink(skb, 0, 0, dev, 0); |
c38e01b8 JF |
2635 | if (err < 0) |
2636 | goto errout; | |
2637 | } | |
2469ffd7 | 2638 | |
c38e01b8 JF |
2639 | if ((flags & BRIDGE_FLAGS_SELF) && |
2640 | dev->netdev_ops->ndo_bridge_getlink) { | |
6cbdceeb | 2641 | err = dev->netdev_ops->ndo_bridge_getlink(skb, 0, 0, dev, 0); |
c38e01b8 JF |
2642 | if (err < 0) |
2643 | goto errout; | |
2644 | } | |
2469ffd7 JF |
2645 | |
2646 | rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC); | |
2647 | return 0; | |
2648 | errout: | |
2649 | WARN_ON(err == -EMSGSIZE); | |
2650 | kfree_skb(skb); | |
2651 | rtnl_set_sk_err(net, RTNLGRP_LINK, err); | |
2652 | return err; | |
2653 | } | |
2654 | ||
661d2967 | 2655 | static int rtnl_bridge_setlink(struct sk_buff *skb, struct nlmsghdr *nlh) |
e5a55a89 JF |
2656 | { |
2657 | struct net *net = sock_net(skb->sk); | |
2658 | struct ifinfomsg *ifm; | |
2659 | struct net_device *dev; | |
2469ffd7 JF |
2660 | struct nlattr *br_spec, *attr = NULL; |
2661 | int rem, err = -EOPNOTSUPP; | |
c38e01b8 JF |
2662 | u16 oflags, flags = 0; |
2663 | bool have_flags = false; | |
e5a55a89 JF |
2664 | |
2665 | if (nlmsg_len(nlh) < sizeof(*ifm)) | |
2666 | return -EINVAL; | |
2667 | ||
2668 | ifm = nlmsg_data(nlh); | |
2669 | if (ifm->ifi_family != AF_BRIDGE) | |
2670 | return -EPFNOSUPPORT; | |
2671 | ||
2672 | dev = __dev_get_by_index(net, ifm->ifi_index); | |
2673 | if (!dev) { | |
2674 | pr_info("PF_BRIDGE: RTM_SETLINK with unknown ifindex\n"); | |
2675 | return -ENODEV; | |
2676 | } | |
2677 | ||
2469ffd7 JF |
2678 | br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); |
2679 | if (br_spec) { | |
2680 | nla_for_each_nested(attr, br_spec, rem) { | |
2681 | if (nla_type(attr) == IFLA_BRIDGE_FLAGS) { | |
c38e01b8 | 2682 | have_flags = true; |
2469ffd7 JF |
2683 | flags = nla_get_u16(attr); |
2684 | break; | |
2685 | } | |
2686 | } | |
2687 | } | |
2688 | ||
c38e01b8 JF |
2689 | oflags = flags; |
2690 | ||
2469ffd7 | 2691 | if (!flags || (flags & BRIDGE_FLAGS_MASTER)) { |
898e5061 JP |
2692 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
2693 | ||
2694 | if (!br_dev || !br_dev->netdev_ops->ndo_bridge_setlink) { | |
2469ffd7 JF |
2695 | err = -EOPNOTSUPP; |
2696 | goto out; | |
2697 | } | |
2698 | ||
898e5061 | 2699 | err = br_dev->netdev_ops->ndo_bridge_setlink(dev, nlh); |
e5a55a89 JF |
2700 | if (err) |
2701 | goto out; | |
2469ffd7 JF |
2702 | |
2703 | flags &= ~BRIDGE_FLAGS_MASTER; | |
e5a55a89 JF |
2704 | } |
2705 | ||
2469ffd7 JF |
2706 | if ((flags & BRIDGE_FLAGS_SELF)) { |
2707 | if (!dev->netdev_ops->ndo_bridge_setlink) | |
2708 | err = -EOPNOTSUPP; | |
2709 | else | |
2710 | err = dev->netdev_ops->ndo_bridge_setlink(dev, nlh); | |
2711 | ||
2712 | if (!err) | |
2713 | flags &= ~BRIDGE_FLAGS_SELF; | |
2714 | } | |
e5a55a89 | 2715 | |
c38e01b8 | 2716 | if (have_flags) |
2469ffd7 JF |
2717 | memcpy(nla_data(attr), &flags, sizeof(flags)); |
2718 | /* Generate event to notify upper layer of bridge change */ | |
2719 | if (!err) | |
c38e01b8 | 2720 | err = rtnl_bridge_notify(dev, oflags); |
e5a55a89 JF |
2721 | out: |
2722 | return err; | |
2723 | } | |
2724 | ||
661d2967 | 2725 | static int rtnl_bridge_dellink(struct sk_buff *skb, struct nlmsghdr *nlh) |
407af329 VY |
2726 | { |
2727 | struct net *net = sock_net(skb->sk); | |
2728 | struct ifinfomsg *ifm; | |
2729 | struct net_device *dev; | |
2730 | struct nlattr *br_spec, *attr = NULL; | |
2731 | int rem, err = -EOPNOTSUPP; | |
2732 | u16 oflags, flags = 0; | |
2733 | bool have_flags = false; | |
2734 | ||
2735 | if (nlmsg_len(nlh) < sizeof(*ifm)) | |
2736 | return -EINVAL; | |
2737 | ||
2738 | ifm = nlmsg_data(nlh); | |
2739 | if (ifm->ifi_family != AF_BRIDGE) | |
2740 | return -EPFNOSUPPORT; | |
2741 | ||
2742 | dev = __dev_get_by_index(net, ifm->ifi_index); | |
2743 | if (!dev) { | |
2744 | pr_info("PF_BRIDGE: RTM_SETLINK with unknown ifindex\n"); | |
2745 | return -ENODEV; | |
2746 | } | |
2747 | ||
2748 | br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); | |
2749 | if (br_spec) { | |
2750 | nla_for_each_nested(attr, br_spec, rem) { | |
2751 | if (nla_type(attr) == IFLA_BRIDGE_FLAGS) { | |
2752 | have_flags = true; | |
2753 | flags = nla_get_u16(attr); | |
2754 | break; | |
2755 | } | |
2756 | } | |
2757 | } | |
2758 | ||
2759 | oflags = flags; | |
2760 | ||
2761 | if (!flags || (flags & BRIDGE_FLAGS_MASTER)) { | |
2762 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); | |
2763 | ||
2764 | if (!br_dev || !br_dev->netdev_ops->ndo_bridge_dellink) { | |
2765 | err = -EOPNOTSUPP; | |
2766 | goto out; | |
2767 | } | |
2768 | ||
2769 | err = br_dev->netdev_ops->ndo_bridge_dellink(dev, nlh); | |
2770 | if (err) | |
2771 | goto out; | |
2772 | ||
2773 | flags &= ~BRIDGE_FLAGS_MASTER; | |
2774 | } | |
2775 | ||
2776 | if ((flags & BRIDGE_FLAGS_SELF)) { | |
2777 | if (!dev->netdev_ops->ndo_bridge_dellink) | |
2778 | err = -EOPNOTSUPP; | |
2779 | else | |
2780 | err = dev->netdev_ops->ndo_bridge_dellink(dev, nlh); | |
2781 | ||
2782 | if (!err) | |
2783 | flags &= ~BRIDGE_FLAGS_SELF; | |
2784 | } | |
2785 | ||
2786 | if (have_flags) | |
2787 | memcpy(nla_data(attr), &flags, sizeof(flags)); | |
2788 | /* Generate event to notify upper layer of bridge change */ | |
2789 | if (!err) | |
2790 | err = rtnl_bridge_notify(dev, oflags); | |
2791 | out: | |
2792 | return err; | |
2793 | } | |
2794 | ||
1da177e4 LT |
2795 | /* Process one rtnetlink message. */ |
2796 | ||
1d00a4eb | 2797 | static int rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh) |
1da177e4 | 2798 | { |
3b1e0a65 | 2799 | struct net *net = sock_net(skb->sk); |
e2849863 | 2800 | rtnl_doit_func doit; |
1da177e4 | 2801 | int sz_idx, kind; |
1da177e4 LT |
2802 | int family; |
2803 | int type; | |
2907c35f | 2804 | int err; |
1da177e4 | 2805 | |
1da177e4 | 2806 | type = nlh->nlmsg_type; |
1da177e4 | 2807 | if (type > RTM_MAX) |
038890fe | 2808 | return -EOPNOTSUPP; |
1da177e4 LT |
2809 | |
2810 | type -= RTM_BASE; | |
2811 | ||
2812 | /* All the messages must have at least 1 byte length */ | |
573ce260 | 2813 | if (nlmsg_len(nlh) < sizeof(struct rtgenmsg)) |
1da177e4 LT |
2814 | return 0; |
2815 | ||
573ce260 | 2816 | family = ((struct rtgenmsg *)nlmsg_data(nlh))->rtgen_family; |
1da177e4 LT |
2817 | sz_idx = type>>2; |
2818 | kind = type&3; | |
2819 | ||
90f62cf3 | 2820 | if (kind != 2 && !netlink_net_capable(skb, CAP_NET_ADMIN)) |
1d00a4eb | 2821 | return -EPERM; |
1da177e4 | 2822 | |
b8f3ab42 | 2823 | if (kind == 2 && nlh->nlmsg_flags&NLM_F_DUMP) { |
97c53cac | 2824 | struct sock *rtnl; |
e2849863 | 2825 | rtnl_dumpit_func dumpit; |
c7ac8679 GR |
2826 | rtnl_calcit_func calcit; |
2827 | u16 min_dump_alloc = 0; | |
1da177e4 | 2828 | |
e2849863 TG |
2829 | dumpit = rtnl_get_dumpit(family, type); |
2830 | if (dumpit == NULL) | |
038890fe | 2831 | return -EOPNOTSUPP; |
c7ac8679 GR |
2832 | calcit = rtnl_get_calcit(family, type); |
2833 | if (calcit) | |
115c9b81 | 2834 | min_dump_alloc = calcit(skb, nlh); |
9ac4a169 | 2835 | |
2907c35f | 2836 | __rtnl_unlock(); |
97c53cac | 2837 | rtnl = net->rtnl; |
80d326fa PNA |
2838 | { |
2839 | struct netlink_dump_control c = { | |
2840 | .dump = dumpit, | |
2841 | .min_dump_alloc = min_dump_alloc, | |
2842 | }; | |
2843 | err = netlink_dump_start(rtnl, skb, nlh, &c); | |
2844 | } | |
2907c35f ED |
2845 | rtnl_lock(); |
2846 | return err; | |
1da177e4 LT |
2847 | } |
2848 | ||
e2849863 TG |
2849 | doit = rtnl_get_doit(family, type); |
2850 | if (doit == NULL) | |
038890fe | 2851 | return -EOPNOTSUPP; |
1da177e4 | 2852 | |
661d2967 | 2853 | return doit(skb, nlh); |
1da177e4 LT |
2854 | } |
2855 | ||
cd40b7d3 | 2856 | static void rtnetlink_rcv(struct sk_buff *skb) |
1da177e4 | 2857 | { |
cd40b7d3 DL |
2858 | rtnl_lock(); |
2859 | netlink_rcv_skb(skb, &rtnetlink_rcv_msg); | |
2860 | rtnl_unlock(); | |
1da177e4 LT |
2861 | } |
2862 | ||
1da177e4 LT |
2863 | static int rtnetlink_event(struct notifier_block *this, unsigned long event, void *ptr) |
2864 | { | |
351638e7 | 2865 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
e9dc8653 | 2866 | |
1da177e4 | 2867 | switch (event) { |
1da177e4 LT |
2868 | case NETDEV_UP: |
2869 | case NETDEV_DOWN: | |
10de05af | 2870 | case NETDEV_PRE_UP: |
d90a909e EB |
2871 | case NETDEV_POST_INIT: |
2872 | case NETDEV_REGISTER: | |
1da177e4 | 2873 | case NETDEV_CHANGE: |
755d0e77 | 2874 | case NETDEV_PRE_TYPE_CHANGE: |
1da177e4 | 2875 | case NETDEV_GOING_DOWN: |
a2835763 | 2876 | case NETDEV_UNREGISTER: |
0115e8e3 | 2877 | case NETDEV_UNREGISTER_FINAL: |
ac3d3f81 AW |
2878 | case NETDEV_RELEASE: |
2879 | case NETDEV_JOIN: | |
1da177e4 LT |
2880 | break; |
2881 | default: | |
7f294054 | 2882 | rtmsg_ifinfo(RTM_NEWLINK, dev, 0, GFP_KERNEL); |
1da177e4 LT |
2883 | break; |
2884 | } | |
2885 | return NOTIFY_DONE; | |
2886 | } | |
2887 | ||
2888 | static struct notifier_block rtnetlink_dev_notifier = { | |
2889 | .notifier_call = rtnetlink_event, | |
2890 | }; | |
2891 | ||
97c53cac | 2892 | |
2c8c1e72 | 2893 | static int __net_init rtnetlink_net_init(struct net *net) |
97c53cac DL |
2894 | { |
2895 | struct sock *sk; | |
a31f2d17 PNA |
2896 | struct netlink_kernel_cfg cfg = { |
2897 | .groups = RTNLGRP_MAX, | |
2898 | .input = rtnetlink_rcv, | |
2899 | .cb_mutex = &rtnl_mutex, | |
9785e10a | 2900 | .flags = NL_CFG_F_NONROOT_RECV, |
a31f2d17 PNA |
2901 | }; |
2902 | ||
9f00d977 | 2903 | sk = netlink_kernel_create(net, NETLINK_ROUTE, &cfg); |
97c53cac DL |
2904 | if (!sk) |
2905 | return -ENOMEM; | |
97c53cac DL |
2906 | net->rtnl = sk; |
2907 | return 0; | |
2908 | } | |
2909 | ||
2c8c1e72 | 2910 | static void __net_exit rtnetlink_net_exit(struct net *net) |
97c53cac | 2911 | { |
775516bf DL |
2912 | netlink_kernel_release(net->rtnl); |
2913 | net->rtnl = NULL; | |
97c53cac DL |
2914 | } |
2915 | ||
2916 | static struct pernet_operations rtnetlink_net_ops = { | |
2917 | .init = rtnetlink_net_init, | |
2918 | .exit = rtnetlink_net_exit, | |
2919 | }; | |
2920 | ||
1da177e4 LT |
2921 | void __init rtnetlink_init(void) |
2922 | { | |
97c53cac | 2923 | if (register_pernet_subsys(&rtnetlink_net_ops)) |
1da177e4 | 2924 | panic("rtnetlink_init: cannot initialize rtnetlink\n"); |
97c53cac | 2925 | |
1da177e4 | 2926 | register_netdevice_notifier(&rtnetlink_dev_notifier); |
340d17fc | 2927 | |
c7ac8679 GR |
2928 | rtnl_register(PF_UNSPEC, RTM_GETLINK, rtnl_getlink, |
2929 | rtnl_dump_ifinfo, rtnl_calcit); | |
2930 | rtnl_register(PF_UNSPEC, RTM_SETLINK, rtnl_setlink, NULL, NULL); | |
2931 | rtnl_register(PF_UNSPEC, RTM_NEWLINK, rtnl_newlink, NULL, NULL); | |
2932 | rtnl_register(PF_UNSPEC, RTM_DELLINK, rtnl_dellink, NULL, NULL); | |
687ad8cc | 2933 | |
c7ac8679 GR |
2934 | rtnl_register(PF_UNSPEC, RTM_GETADDR, NULL, rtnl_dump_all, NULL); |
2935 | rtnl_register(PF_UNSPEC, RTM_GETROUTE, NULL, rtnl_dump_all, NULL); | |
77162022 JF |
2936 | |
2937 | rtnl_register(PF_BRIDGE, RTM_NEWNEIGH, rtnl_fdb_add, NULL, NULL); | |
2938 | rtnl_register(PF_BRIDGE, RTM_DELNEIGH, rtnl_fdb_del, NULL, NULL); | |
2939 | rtnl_register(PF_BRIDGE, RTM_GETNEIGH, NULL, rtnl_fdb_dump, NULL); | |
e5a55a89 JF |
2940 | |
2941 | rtnl_register(PF_BRIDGE, RTM_GETLINK, NULL, rtnl_bridge_getlink, NULL); | |
407af329 | 2942 | rtnl_register(PF_BRIDGE, RTM_DELLINK, rtnl_bridge_dellink, NULL, NULL); |
e5a55a89 | 2943 | rtnl_register(PF_BRIDGE, RTM_SETLINK, rtnl_bridge_setlink, NULL, NULL); |
1da177e4 LT |
2944 | } |
2945 |