Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * INET An implementation of the TCP/IP protocol suite for the LINUX | |
3 | * operating system. INET is implemented using the BSD Socket | |
4 | * interface as the means of communication with the user level. | |
5 | * | |
6 | * Routing netlink socket interface: protocol independent part. | |
7 | * | |
8 | * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or | |
11 | * modify it under the terms of the GNU General Public License | |
12 | * as published by the Free Software Foundation; either version | |
13 | * 2 of the License, or (at your option) any later version. | |
14 | * | |
15 | * Fixes: | |
16 | * Vitaly E. Lavrov RTA_OK arithmetics was wrong. | |
17 | */ | |
18 | ||
1da177e4 LT |
19 | #include <linux/errno.h> |
20 | #include <linux/module.h> | |
21 | #include <linux/types.h> | |
22 | #include <linux/socket.h> | |
23 | #include <linux/kernel.h> | |
1da177e4 LT |
24 | #include <linux/timer.h> |
25 | #include <linux/string.h> | |
26 | #include <linux/sockios.h> | |
27 | #include <linux/net.h> | |
28 | #include <linux/fcntl.h> | |
29 | #include <linux/mm.h> | |
30 | #include <linux/slab.h> | |
31 | #include <linux/interrupt.h> | |
32 | #include <linux/capability.h> | |
33 | #include <linux/skbuff.h> | |
34 | #include <linux/init.h> | |
35 | #include <linux/security.h> | |
6756ae4b | 36 | #include <linux/mutex.h> |
1823730f | 37 | #include <linux/if_addr.h> |
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 | ||
356 | /** | |
357 | * rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink. | |
358 | * @ops: struct rtnl_link_ops * to unregister | |
359 | */ | |
360 | void rtnl_link_unregister(struct rtnl_link_ops *ops) | |
361 | { | |
362 | rtnl_lock(); | |
363 | __rtnl_link_unregister(ops); | |
364 | rtnl_unlock(); | |
365 | } | |
38f7b870 PM |
366 | EXPORT_SYMBOL_GPL(rtnl_link_unregister); |
367 | ||
38f7b870 PM |
368 | static size_t rtnl_link_get_size(const struct net_device *dev) |
369 | { | |
370 | const struct rtnl_link_ops *ops = dev->rtnl_link_ops; | |
371 | size_t size; | |
372 | ||
373 | if (!ops) | |
374 | return 0; | |
375 | ||
369cf77a TG |
376 | size = nla_total_size(sizeof(struct nlattr)) + /* IFLA_LINKINFO */ |
377 | nla_total_size(strlen(ops->kind) + 1); /* IFLA_INFO_KIND */ | |
38f7b870 PM |
378 | |
379 | if (ops->get_size) | |
380 | /* IFLA_INFO_DATA + nested data */ | |
369cf77a | 381 | size += nla_total_size(sizeof(struct nlattr)) + |
38f7b870 PM |
382 | ops->get_size(dev); |
383 | ||
384 | if (ops->get_xstats_size) | |
369cf77a TG |
385 | /* IFLA_INFO_XSTATS */ |
386 | size += nla_total_size(ops->get_xstats_size(dev)); | |
38f7b870 PM |
387 | |
388 | return size; | |
389 | } | |
390 | ||
f8ff182c TG |
391 | static LIST_HEAD(rtnl_af_ops); |
392 | ||
393 | static const struct rtnl_af_ops *rtnl_af_lookup(const int family) | |
394 | { | |
395 | const struct rtnl_af_ops *ops; | |
396 | ||
397 | list_for_each_entry(ops, &rtnl_af_ops, list) { | |
398 | if (ops->family == family) | |
399 | return ops; | |
400 | } | |
401 | ||
402 | return NULL; | |
403 | } | |
404 | ||
405 | /** | |
406 | * __rtnl_af_register - Register rtnl_af_ops with rtnetlink. | |
407 | * @ops: struct rtnl_af_ops * to register | |
408 | * | |
409 | * The caller must hold the rtnl_mutex. | |
410 | * | |
411 | * Returns 0 on success or a negative error code. | |
412 | */ | |
413 | int __rtnl_af_register(struct rtnl_af_ops *ops) | |
414 | { | |
415 | list_add_tail(&ops->list, &rtnl_af_ops); | |
416 | return 0; | |
417 | } | |
418 | EXPORT_SYMBOL_GPL(__rtnl_af_register); | |
419 | ||
420 | /** | |
421 | * rtnl_af_register - Register rtnl_af_ops with rtnetlink. | |
422 | * @ops: struct rtnl_af_ops * to register | |
423 | * | |
424 | * Returns 0 on success or a negative error code. | |
425 | */ | |
426 | int rtnl_af_register(struct rtnl_af_ops *ops) | |
427 | { | |
428 | int err; | |
429 | ||
430 | rtnl_lock(); | |
431 | err = __rtnl_af_register(ops); | |
432 | rtnl_unlock(); | |
433 | return err; | |
434 | } | |
435 | EXPORT_SYMBOL_GPL(rtnl_af_register); | |
436 | ||
437 | /** | |
438 | * __rtnl_af_unregister - Unregister rtnl_af_ops from rtnetlink. | |
439 | * @ops: struct rtnl_af_ops * to unregister | |
440 | * | |
441 | * The caller must hold the rtnl_mutex. | |
442 | */ | |
443 | void __rtnl_af_unregister(struct rtnl_af_ops *ops) | |
444 | { | |
445 | list_del(&ops->list); | |
446 | } | |
447 | EXPORT_SYMBOL_GPL(__rtnl_af_unregister); | |
448 | ||
449 | /** | |
450 | * rtnl_af_unregister - Unregister rtnl_af_ops from rtnetlink. | |
451 | * @ops: struct rtnl_af_ops * to unregister | |
452 | */ | |
453 | void rtnl_af_unregister(struct rtnl_af_ops *ops) | |
454 | { | |
455 | rtnl_lock(); | |
456 | __rtnl_af_unregister(ops); | |
457 | rtnl_unlock(); | |
458 | } | |
459 | EXPORT_SYMBOL_GPL(rtnl_af_unregister); | |
460 | ||
461 | static size_t rtnl_link_get_af_size(const struct net_device *dev) | |
462 | { | |
463 | struct rtnl_af_ops *af_ops; | |
464 | size_t size; | |
465 | ||
466 | /* IFLA_AF_SPEC */ | |
467 | size = nla_total_size(sizeof(struct nlattr)); | |
468 | ||
469 | list_for_each_entry(af_ops, &rtnl_af_ops, list) { | |
470 | if (af_ops->get_link_af_size) { | |
471 | /* AF_* + nested data */ | |
472 | size += nla_total_size(sizeof(struct nlattr)) + | |
473 | af_ops->get_link_af_size(dev); | |
474 | } | |
475 | } | |
476 | ||
477 | return size; | |
478 | } | |
479 | ||
38f7b870 PM |
480 | static int rtnl_link_fill(struct sk_buff *skb, const struct net_device *dev) |
481 | { | |
482 | const struct rtnl_link_ops *ops = dev->rtnl_link_ops; | |
483 | struct nlattr *linkinfo, *data; | |
484 | int err = -EMSGSIZE; | |
485 | ||
486 | linkinfo = nla_nest_start(skb, IFLA_LINKINFO); | |
487 | if (linkinfo == NULL) | |
488 | goto out; | |
489 | ||
490 | if (nla_put_string(skb, IFLA_INFO_KIND, ops->kind) < 0) | |
491 | goto err_cancel_link; | |
492 | if (ops->fill_xstats) { | |
493 | err = ops->fill_xstats(skb, dev); | |
494 | if (err < 0) | |
495 | goto err_cancel_link; | |
496 | } | |
497 | if (ops->fill_info) { | |
498 | data = nla_nest_start(skb, IFLA_INFO_DATA); | |
499 | if (data == NULL) | |
500 | goto err_cancel_link; | |
501 | err = ops->fill_info(skb, dev); | |
502 | if (err < 0) | |
503 | goto err_cancel_data; | |
504 | nla_nest_end(skb, data); | |
505 | } | |
506 | ||
507 | nla_nest_end(skb, linkinfo); | |
508 | return 0; | |
509 | ||
510 | err_cancel_data: | |
511 | nla_nest_cancel(skb, data); | |
512 | err_cancel_link: | |
513 | nla_nest_cancel(skb, linkinfo); | |
514 | out: | |
515 | return err; | |
516 | } | |
517 | ||
db46edc6 | 518 | static const int rtm_min[RTM_NR_FAMILIES] = |
1da177e4 | 519 | { |
f90a0a74 TG |
520 | [RTM_FAM(RTM_NEWLINK)] = NLMSG_LENGTH(sizeof(struct ifinfomsg)), |
521 | [RTM_FAM(RTM_NEWADDR)] = NLMSG_LENGTH(sizeof(struct ifaddrmsg)), | |
522 | [RTM_FAM(RTM_NEWROUTE)] = NLMSG_LENGTH(sizeof(struct rtmsg)), | |
14c0b97d | 523 | [RTM_FAM(RTM_NEWRULE)] = NLMSG_LENGTH(sizeof(struct fib_rule_hdr)), |
f90a0a74 TG |
524 | [RTM_FAM(RTM_NEWQDISC)] = NLMSG_LENGTH(sizeof(struct tcmsg)), |
525 | [RTM_FAM(RTM_NEWTCLASS)] = NLMSG_LENGTH(sizeof(struct tcmsg)), | |
526 | [RTM_FAM(RTM_NEWTFILTER)] = NLMSG_LENGTH(sizeof(struct tcmsg)), | |
527 | [RTM_FAM(RTM_NEWACTION)] = NLMSG_LENGTH(sizeof(struct tcamsg)), | |
f90a0a74 TG |
528 | [RTM_FAM(RTM_GETMULTICAST)] = NLMSG_LENGTH(sizeof(struct rtgenmsg)), |
529 | [RTM_FAM(RTM_GETANYCAST)] = NLMSG_LENGTH(sizeof(struct rtgenmsg)), | |
1da177e4 LT |
530 | }; |
531 | ||
db46edc6 | 532 | static const int rta_max[RTM_NR_FAMILIES] = |
1da177e4 | 533 | { |
f90a0a74 TG |
534 | [RTM_FAM(RTM_NEWLINK)] = IFLA_MAX, |
535 | [RTM_FAM(RTM_NEWADDR)] = IFA_MAX, | |
536 | [RTM_FAM(RTM_NEWROUTE)] = RTA_MAX, | |
14c0b97d | 537 | [RTM_FAM(RTM_NEWRULE)] = FRA_MAX, |
f90a0a74 TG |
538 | [RTM_FAM(RTM_NEWQDISC)] = TCA_MAX, |
539 | [RTM_FAM(RTM_NEWTCLASS)] = TCA_MAX, | |
540 | [RTM_FAM(RTM_NEWTFILTER)] = TCA_MAX, | |
541 | [RTM_FAM(RTM_NEWACTION)] = TCAA_MAX, | |
1da177e4 LT |
542 | }; |
543 | ||
95c96174 | 544 | int rtnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, unsigned int group, int echo) |
1da177e4 | 545 | { |
97c53cac | 546 | struct sock *rtnl = net->rtnl; |
1da177e4 LT |
547 | int err = 0; |
548 | ||
ac6d439d | 549 | NETLINK_CB(skb).dst_group = group; |
1da177e4 LT |
550 | if (echo) |
551 | atomic_inc(&skb->users); | |
552 | netlink_broadcast(rtnl, skb, pid, group, GFP_KERNEL); | |
553 | if (echo) | |
554 | err = netlink_unicast(rtnl, skb, pid, MSG_DONTWAIT); | |
555 | return err; | |
556 | } | |
557 | ||
97c53cac | 558 | int rtnl_unicast(struct sk_buff *skb, struct net *net, u32 pid) |
2942e900 | 559 | { |
97c53cac DL |
560 | struct sock *rtnl = net->rtnl; |
561 | ||
2942e900 TG |
562 | return nlmsg_unicast(rtnl, skb, pid); |
563 | } | |
e0d087af | 564 | EXPORT_SYMBOL(rtnl_unicast); |
2942e900 | 565 | |
1ce85fe4 PNA |
566 | void rtnl_notify(struct sk_buff *skb, struct net *net, u32 pid, u32 group, |
567 | struct nlmsghdr *nlh, gfp_t flags) | |
97676b6b | 568 | { |
97c53cac | 569 | struct sock *rtnl = net->rtnl; |
97676b6b TG |
570 | int report = 0; |
571 | ||
572 | if (nlh) | |
573 | report = nlmsg_report(nlh); | |
574 | ||
1ce85fe4 | 575 | nlmsg_notify(rtnl, skb, pid, group, report, flags); |
97676b6b | 576 | } |
e0d087af | 577 | EXPORT_SYMBOL(rtnl_notify); |
97676b6b | 578 | |
97c53cac | 579 | void rtnl_set_sk_err(struct net *net, u32 group, int error) |
97676b6b | 580 | { |
97c53cac DL |
581 | struct sock *rtnl = net->rtnl; |
582 | ||
97676b6b TG |
583 | netlink_set_err(rtnl, 0, group, error); |
584 | } | |
e0d087af | 585 | EXPORT_SYMBOL(rtnl_set_sk_err); |
97676b6b | 586 | |
1da177e4 LT |
587 | int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics) |
588 | { | |
2d7202bf TG |
589 | struct nlattr *mx; |
590 | int i, valid = 0; | |
591 | ||
592 | mx = nla_nest_start(skb, RTA_METRICS); | |
593 | if (mx == NULL) | |
594 | return -ENOBUFS; | |
595 | ||
596 | for (i = 0; i < RTAX_MAX; i++) { | |
597 | if (metrics[i]) { | |
598 | valid++; | |
a6574349 DM |
599 | if (nla_put_u32(skb, i+1, metrics[i])) |
600 | goto nla_put_failure; | |
2d7202bf | 601 | } |
1da177e4 | 602 | } |
1da177e4 | 603 | |
a57d27fc DM |
604 | if (!valid) { |
605 | nla_nest_cancel(skb, mx); | |
606 | return 0; | |
607 | } | |
2d7202bf TG |
608 | |
609 | return nla_nest_end(skb, mx); | |
610 | ||
611 | nla_put_failure: | |
bc3ed28c TG |
612 | nla_nest_cancel(skb, mx); |
613 | return -EMSGSIZE; | |
1da177e4 | 614 | } |
e0d087af | 615 | EXPORT_SYMBOL(rtnetlink_put_metrics); |
1da177e4 | 616 | |
e3703b3d | 617 | int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst, u32 id, |
87a50699 | 618 | long expires, u32 error) |
e3703b3d TG |
619 | { |
620 | struct rta_cacheinfo ci = { | |
a399a805 | 621 | .rta_lastuse = jiffies_delta_to_clock_t(jiffies - dst->lastuse), |
e3703b3d TG |
622 | .rta_used = dst->__use, |
623 | .rta_clntref = atomic_read(&(dst->__refcnt)), | |
624 | .rta_error = error, | |
625 | .rta_id = id, | |
e3703b3d TG |
626 | }; |
627 | ||
8253947e LW |
628 | if (expires) { |
629 | unsigned long clock; | |
e3703b3d | 630 | |
8253947e LW |
631 | clock = jiffies_to_clock_t(abs(expires)); |
632 | clock = min_t(unsigned long, clock, INT_MAX); | |
633 | ci.rta_expires = (expires > 0) ? clock : -clock; | |
634 | } | |
e3703b3d TG |
635 | return nla_put(skb, RTA_CACHEINFO, sizeof(ci), &ci); |
636 | } | |
e3703b3d | 637 | EXPORT_SYMBOL_GPL(rtnl_put_cacheinfo); |
1da177e4 | 638 | |
93b2d4a2 | 639 | static void set_operstate(struct net_device *dev, unsigned char transition) |
b00055aa SR |
640 | { |
641 | unsigned char operstate = dev->operstate; | |
642 | ||
e0d087af | 643 | switch (transition) { |
b00055aa SR |
644 | case IF_OPER_UP: |
645 | if ((operstate == IF_OPER_DORMANT || | |
646 | operstate == IF_OPER_UNKNOWN) && | |
647 | !netif_dormant(dev)) | |
648 | operstate = IF_OPER_UP; | |
649 | break; | |
650 | ||
651 | case IF_OPER_DORMANT: | |
652 | if (operstate == IF_OPER_UP || | |
653 | operstate == IF_OPER_UNKNOWN) | |
654 | operstate = IF_OPER_DORMANT; | |
655 | break; | |
3ff50b79 | 656 | } |
b00055aa SR |
657 | |
658 | if (dev->operstate != operstate) { | |
659 | write_lock_bh(&dev_base_lock); | |
660 | dev->operstate = operstate; | |
661 | write_unlock_bh(&dev_base_lock); | |
93b2d4a2 DM |
662 | netdev_state_change(dev); |
663 | } | |
b00055aa SR |
664 | } |
665 | ||
b1beb681 JB |
666 | static unsigned int rtnl_dev_get_flags(const struct net_device *dev) |
667 | { | |
668 | return (dev->flags & ~(IFF_PROMISC | IFF_ALLMULTI)) | | |
669 | (dev->gflags & (IFF_PROMISC | IFF_ALLMULTI)); | |
670 | } | |
671 | ||
3729d502 PM |
672 | static unsigned int rtnl_dev_combine_flags(const struct net_device *dev, |
673 | const struct ifinfomsg *ifm) | |
674 | { | |
675 | unsigned int flags = ifm->ifi_flags; | |
676 | ||
677 | /* bugwards compatibility: ifi_change == 0 is treated as ~0 */ | |
678 | if (ifm->ifi_change) | |
679 | flags = (flags & ifm->ifi_change) | | |
b1beb681 | 680 | (rtnl_dev_get_flags(dev) & ~ifm->ifi_change); |
3729d502 PM |
681 | |
682 | return flags; | |
683 | } | |
684 | ||
b60c5115 | 685 | static void copy_rtnl_link_stats(struct rtnl_link_stats *a, |
be1f3c2c | 686 | const struct rtnl_link_stats64 *b) |
1da177e4 | 687 | { |
b60c5115 TG |
688 | a->rx_packets = b->rx_packets; |
689 | a->tx_packets = b->tx_packets; | |
690 | a->rx_bytes = b->rx_bytes; | |
691 | a->tx_bytes = b->tx_bytes; | |
692 | a->rx_errors = b->rx_errors; | |
693 | a->tx_errors = b->tx_errors; | |
694 | a->rx_dropped = b->rx_dropped; | |
695 | a->tx_dropped = b->tx_dropped; | |
696 | ||
697 | a->multicast = b->multicast; | |
698 | a->collisions = b->collisions; | |
699 | ||
700 | a->rx_length_errors = b->rx_length_errors; | |
701 | a->rx_over_errors = b->rx_over_errors; | |
702 | a->rx_crc_errors = b->rx_crc_errors; | |
703 | a->rx_frame_errors = b->rx_frame_errors; | |
704 | a->rx_fifo_errors = b->rx_fifo_errors; | |
705 | a->rx_missed_errors = b->rx_missed_errors; | |
706 | ||
707 | a->tx_aborted_errors = b->tx_aborted_errors; | |
708 | a->tx_carrier_errors = b->tx_carrier_errors; | |
709 | a->tx_fifo_errors = b->tx_fifo_errors; | |
710 | a->tx_heartbeat_errors = b->tx_heartbeat_errors; | |
711 | a->tx_window_errors = b->tx_window_errors; | |
712 | ||
713 | a->rx_compressed = b->rx_compressed; | |
714 | a->tx_compressed = b->tx_compressed; | |
10708f37 JE |
715 | } |
716 | ||
be1f3c2c | 717 | static void copy_rtnl_link_stats64(void *v, const struct rtnl_link_stats64 *b) |
10708f37 | 718 | { |
afdcba37 | 719 | memcpy(v, b, sizeof(*b)); |
10708f37 | 720 | } |
1da177e4 | 721 | |
c02db8c6 | 722 | /* All VF info */ |
115c9b81 GR |
723 | static inline int rtnl_vfinfo_size(const struct net_device *dev, |
724 | u32 ext_filter_mask) | |
ebc08a6f | 725 | { |
115c9b81 GR |
726 | if (dev->dev.parent && dev_is_pci(dev->dev.parent) && |
727 | (ext_filter_mask & RTEXT_FILTER_VF)) { | |
c02db8c6 | 728 | int num_vfs = dev_num_vf(dev->dev.parent); |
045de01a SF |
729 | size_t size = nla_total_size(sizeof(struct nlattr)); |
730 | size += nla_total_size(num_vfs * sizeof(struct nlattr)); | |
731 | size += num_vfs * | |
732 | (nla_total_size(sizeof(struct ifla_vf_mac)) + | |
733 | nla_total_size(sizeof(struct ifla_vf_vlan)) + | |
5f8444a3 GR |
734 | nla_total_size(sizeof(struct ifla_vf_tx_rate)) + |
735 | nla_total_size(sizeof(struct ifla_vf_spoofchk))); | |
c02db8c6 CW |
736 | return size; |
737 | } else | |
ebc08a6f WM |
738 | return 0; |
739 | } | |
740 | ||
57b61080 SF |
741 | static size_t rtnl_port_size(const struct net_device *dev) |
742 | { | |
743 | size_t port_size = nla_total_size(4) /* PORT_VF */ | |
744 | + nla_total_size(PORT_PROFILE_MAX) /* PORT_PROFILE */ | |
745 | + nla_total_size(sizeof(struct ifla_port_vsi)) | |
746 | /* PORT_VSI_TYPE */ | |
747 | + nla_total_size(PORT_UUID_MAX) /* PORT_INSTANCE_UUID */ | |
748 | + nla_total_size(PORT_UUID_MAX) /* PORT_HOST_UUID */ | |
749 | + nla_total_size(1) /* PROT_VDP_REQUEST */ | |
750 | + nla_total_size(2); /* PORT_VDP_RESPONSE */ | |
751 | size_t vf_ports_size = nla_total_size(sizeof(struct nlattr)); | |
752 | size_t vf_port_size = nla_total_size(sizeof(struct nlattr)) | |
753 | + port_size; | |
754 | size_t port_self_size = nla_total_size(sizeof(struct nlattr)) | |
755 | + port_size; | |
756 | ||
757 | if (!dev->netdev_ops->ndo_get_vf_port || !dev->dev.parent) | |
758 | return 0; | |
759 | if (dev_num_vf(dev->dev.parent)) | |
760 | return port_self_size + vf_ports_size + | |
761 | vf_port_size * dev_num_vf(dev->dev.parent); | |
762 | else | |
763 | return port_self_size; | |
764 | } | |
765 | ||
115c9b81 GR |
766 | static noinline size_t if_nlmsg_size(const struct net_device *dev, |
767 | u32 ext_filter_mask) | |
339bf98f TG |
768 | { |
769 | return NLMSG_ALIGN(sizeof(struct ifinfomsg)) | |
770 | + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */ | |
0b815a1a | 771 | + nla_total_size(IFALIASZ) /* IFLA_IFALIAS */ |
339bf98f TG |
772 | + nla_total_size(IFNAMSIZ) /* IFLA_QDISC */ |
773 | + nla_total_size(sizeof(struct rtnl_link_ifmap)) | |
774 | + nla_total_size(sizeof(struct rtnl_link_stats)) | |
adcfe196 | 775 | + nla_total_size(sizeof(struct rtnl_link_stats64)) |
339bf98f TG |
776 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */ |
777 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_BROADCAST */ | |
778 | + nla_total_size(4) /* IFLA_TXQLEN */ | |
779 | + nla_total_size(4) /* IFLA_WEIGHT */ | |
780 | + nla_total_size(4) /* IFLA_MTU */ | |
781 | + nla_total_size(4) /* IFLA_LINK */ | |
782 | + nla_total_size(4) /* IFLA_MASTER */ | |
9a57247f | 783 | + nla_total_size(1) /* IFLA_CARRIER */ |
edbc0bb3 | 784 | + nla_total_size(4) /* IFLA_PROMISCUITY */ |
76ff5cc9 JP |
785 | + nla_total_size(4) /* IFLA_NUM_TX_QUEUES */ |
786 | + nla_total_size(4) /* IFLA_NUM_RX_QUEUES */ | |
339bf98f | 787 | + nla_total_size(1) /* IFLA_OPERSTATE */ |
38f7b870 | 788 | + nla_total_size(1) /* IFLA_LINKMODE */ |
115c9b81 GR |
789 | + nla_total_size(ext_filter_mask |
790 | & RTEXT_FILTER_VF ? 4 : 0) /* IFLA_NUM_VF */ | |
791 | + rtnl_vfinfo_size(dev, ext_filter_mask) /* IFLA_VFINFO_LIST */ | |
57b61080 | 792 | + rtnl_port_size(dev) /* IFLA_VF_PORTS + IFLA_PORT_SELF */ |
f8ff182c TG |
793 | + rtnl_link_get_size(dev) /* IFLA_LINKINFO */ |
794 | + rtnl_link_get_af_size(dev); /* IFLA_AF_SPEC */ | |
339bf98f TG |
795 | } |
796 | ||
57b61080 SF |
797 | static int rtnl_vf_ports_fill(struct sk_buff *skb, struct net_device *dev) |
798 | { | |
799 | struct nlattr *vf_ports; | |
800 | struct nlattr *vf_port; | |
801 | int vf; | |
802 | int err; | |
803 | ||
804 | vf_ports = nla_nest_start(skb, IFLA_VF_PORTS); | |
805 | if (!vf_ports) | |
806 | return -EMSGSIZE; | |
807 | ||
808 | for (vf = 0; vf < dev_num_vf(dev->dev.parent); vf++) { | |
809 | vf_port = nla_nest_start(skb, IFLA_VF_PORT); | |
8ca94183 SF |
810 | if (!vf_port) |
811 | goto nla_put_failure; | |
a6574349 DM |
812 | if (nla_put_u32(skb, IFLA_PORT_VF, vf)) |
813 | goto nla_put_failure; | |
57b61080 | 814 | err = dev->netdev_ops->ndo_get_vf_port(dev, vf, skb); |
8ca94183 SF |
815 | if (err == -EMSGSIZE) |
816 | goto nla_put_failure; | |
57b61080 | 817 | if (err) { |
57b61080 SF |
818 | nla_nest_cancel(skb, vf_port); |
819 | continue; | |
820 | } | |
821 | nla_nest_end(skb, vf_port); | |
822 | } | |
823 | ||
824 | nla_nest_end(skb, vf_ports); | |
825 | ||
826 | return 0; | |
8ca94183 SF |
827 | |
828 | nla_put_failure: | |
829 | nla_nest_cancel(skb, vf_ports); | |
830 | return -EMSGSIZE; | |
57b61080 SF |
831 | } |
832 | ||
833 | static int rtnl_port_self_fill(struct sk_buff *skb, struct net_device *dev) | |
834 | { | |
835 | struct nlattr *port_self; | |
836 | int err; | |
837 | ||
838 | port_self = nla_nest_start(skb, IFLA_PORT_SELF); | |
839 | if (!port_self) | |
840 | return -EMSGSIZE; | |
841 | ||
842 | err = dev->netdev_ops->ndo_get_vf_port(dev, PORT_SELF_VF, skb); | |
843 | if (err) { | |
844 | nla_nest_cancel(skb, port_self); | |
8ca94183 | 845 | return (err == -EMSGSIZE) ? err : 0; |
57b61080 SF |
846 | } |
847 | ||
848 | nla_nest_end(skb, port_self); | |
849 | ||
850 | return 0; | |
851 | } | |
852 | ||
853 | static int rtnl_port_fill(struct sk_buff *skb, struct net_device *dev) | |
854 | { | |
855 | int err; | |
856 | ||
857 | if (!dev->netdev_ops->ndo_get_vf_port || !dev->dev.parent) | |
858 | return 0; | |
859 | ||
860 | err = rtnl_port_self_fill(skb, dev); | |
861 | if (err) | |
862 | return err; | |
863 | ||
864 | if (dev_num_vf(dev->dev.parent)) { | |
865 | err = rtnl_vf_ports_fill(skb, dev); | |
866 | if (err) | |
867 | return err; | |
868 | } | |
869 | ||
870 | return 0; | |
871 | } | |
872 | ||
b60c5115 | 873 | static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev, |
575c3e2a | 874 | int type, u32 pid, u32 seq, u32 change, |
115c9b81 | 875 | unsigned int flags, u32 ext_filter_mask) |
b60c5115 TG |
876 | { |
877 | struct ifinfomsg *ifm; | |
878 | struct nlmsghdr *nlh; | |
28172739 | 879 | struct rtnl_link_stats64 temp; |
be1f3c2c | 880 | const struct rtnl_link_stats64 *stats; |
f8ff182c TG |
881 | struct nlattr *attr, *af_spec; |
882 | struct rtnl_af_ops *af_ops; | |
1da177e4 | 883 | |
2907c35f | 884 | ASSERT_RTNL(); |
b60c5115 TG |
885 | nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ifm), flags); |
886 | if (nlh == NULL) | |
26932566 | 887 | return -EMSGSIZE; |
1da177e4 | 888 | |
b60c5115 TG |
889 | ifm = nlmsg_data(nlh); |
890 | ifm->ifi_family = AF_UNSPEC; | |
891 | ifm->__ifi_pad = 0; | |
892 | ifm->ifi_type = dev->type; | |
893 | ifm->ifi_index = dev->ifindex; | |
894 | ifm->ifi_flags = dev_get_flags(dev); | |
895 | ifm->ifi_change = change; | |
896 | ||
a6574349 DM |
897 | if (nla_put_string(skb, IFLA_IFNAME, dev->name) || |
898 | nla_put_u32(skb, IFLA_TXQLEN, dev->tx_queue_len) || | |
899 | nla_put_u8(skb, IFLA_OPERSTATE, | |
900 | netif_running(dev) ? dev->operstate : IF_OPER_DOWN) || | |
901 | nla_put_u8(skb, IFLA_LINKMODE, dev->link_mode) || | |
902 | nla_put_u32(skb, IFLA_MTU, dev->mtu) || | |
903 | nla_put_u32(skb, IFLA_GROUP, dev->group) || | |
edbc0bb3 | 904 | nla_put_u32(skb, IFLA_PROMISCUITY, dev->promiscuity) || |
76ff5cc9 | 905 | nla_put_u32(skb, IFLA_NUM_TX_QUEUES, dev->num_tx_queues) || |
1d69c2b3 | 906 | #ifdef CONFIG_RPS |
76ff5cc9 | 907 | nla_put_u32(skb, IFLA_NUM_RX_QUEUES, dev->num_rx_queues) || |
1d69c2b3 | 908 | #endif |
a6574349 DM |
909 | (dev->ifindex != dev->iflink && |
910 | nla_put_u32(skb, IFLA_LINK, dev->iflink)) || | |
911 | (dev->master && | |
912 | nla_put_u32(skb, IFLA_MASTER, dev->master->ifindex)) || | |
9a57247f | 913 | nla_put_u8(skb, IFLA_CARRIER, netif_carrier_ok(dev)) || |
a6574349 DM |
914 | (dev->qdisc && |
915 | nla_put_string(skb, IFLA_QDISC, dev->qdisc->ops->id)) || | |
916 | (dev->ifalias && | |
917 | nla_put_string(skb, IFLA_IFALIAS, dev->ifalias))) | |
918 | goto nla_put_failure; | |
0b815a1a | 919 | |
1da177e4 LT |
920 | if (1) { |
921 | struct rtnl_link_ifmap map = { | |
922 | .mem_start = dev->mem_start, | |
923 | .mem_end = dev->mem_end, | |
924 | .base_addr = dev->base_addr, | |
925 | .irq = dev->irq, | |
926 | .dma = dev->dma, | |
927 | .port = dev->if_port, | |
928 | }; | |
a6574349 DM |
929 | if (nla_put(skb, IFLA_MAP, sizeof(map), &map)) |
930 | goto nla_put_failure; | |
1da177e4 LT |
931 | } |
932 | ||
933 | if (dev->addr_len) { | |
a6574349 DM |
934 | if (nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr) || |
935 | nla_put(skb, IFLA_BROADCAST, dev->addr_len, dev->broadcast)) | |
936 | goto nla_put_failure; | |
1da177e4 LT |
937 | } |
938 | ||
96e74088 PE |
939 | attr = nla_reserve(skb, IFLA_STATS, |
940 | sizeof(struct rtnl_link_stats)); | |
941 | if (attr == NULL) | |
942 | goto nla_put_failure; | |
b60c5115 | 943 | |
28172739 | 944 | stats = dev_get_stats(dev, &temp); |
96e74088 | 945 | copy_rtnl_link_stats(nla_data(attr), stats); |
1da177e4 | 946 | |
10708f37 JE |
947 | attr = nla_reserve(skb, IFLA_STATS64, |
948 | sizeof(struct rtnl_link_stats64)); | |
949 | if (attr == NULL) | |
950 | goto nla_put_failure; | |
10708f37 JE |
951 | copy_rtnl_link_stats64(nla_data(attr), stats); |
952 | ||
a6574349 DM |
953 | if (dev->dev.parent && (ext_filter_mask & RTEXT_FILTER_VF) && |
954 | nla_put_u32(skb, IFLA_NUM_VF, dev_num_vf(dev->dev.parent))) | |
955 | goto nla_put_failure; | |
57b61080 | 956 | |
115c9b81 GR |
957 | if (dev->netdev_ops->ndo_get_vf_config && dev->dev.parent |
958 | && (ext_filter_mask & RTEXT_FILTER_VF)) { | |
ebc08a6f | 959 | int i; |
ebc08a6f | 960 | |
c02db8c6 CW |
961 | struct nlattr *vfinfo, *vf; |
962 | int num_vfs = dev_num_vf(dev->dev.parent); | |
963 | ||
c02db8c6 CW |
964 | vfinfo = nla_nest_start(skb, IFLA_VFINFO_LIST); |
965 | if (!vfinfo) | |
966 | goto nla_put_failure; | |
967 | for (i = 0; i < num_vfs; i++) { | |
968 | struct ifla_vf_info ivi; | |
969 | struct ifla_vf_mac vf_mac; | |
970 | struct ifla_vf_vlan vf_vlan; | |
971 | struct ifla_vf_tx_rate vf_tx_rate; | |
5f8444a3 GR |
972 | struct ifla_vf_spoofchk vf_spoofchk; |
973 | ||
974 | /* | |
975 | * Not all SR-IOV capable drivers support the | |
976 | * spoofcheck query. Preset to -1 so the user | |
977 | * space tool can detect that the driver didn't | |
978 | * report anything. | |
979 | */ | |
980 | ivi.spoofchk = -1; | |
ebc08a6f WM |
981 | if (dev->netdev_ops->ndo_get_vf_config(dev, i, &ivi)) |
982 | break; | |
5f8444a3 GR |
983 | vf_mac.vf = |
984 | vf_vlan.vf = | |
985 | vf_tx_rate.vf = | |
986 | vf_spoofchk.vf = ivi.vf; | |
987 | ||
c02db8c6 CW |
988 | memcpy(vf_mac.mac, ivi.mac, sizeof(ivi.mac)); |
989 | vf_vlan.vlan = ivi.vlan; | |
990 | vf_vlan.qos = ivi.qos; | |
991 | vf_tx_rate.rate = ivi.tx_rate; | |
5f8444a3 | 992 | vf_spoofchk.setting = ivi.spoofchk; |
c02db8c6 CW |
993 | vf = nla_nest_start(skb, IFLA_VF_INFO); |
994 | if (!vf) { | |
995 | nla_nest_cancel(skb, vfinfo); | |
996 | goto nla_put_failure; | |
997 | } | |
a6574349 DM |
998 | if (nla_put(skb, IFLA_VF_MAC, sizeof(vf_mac), &vf_mac) || |
999 | nla_put(skb, IFLA_VF_VLAN, sizeof(vf_vlan), &vf_vlan) || | |
1000 | nla_put(skb, IFLA_VF_TX_RATE, sizeof(vf_tx_rate), | |
1001 | &vf_tx_rate) || | |
1002 | nla_put(skb, IFLA_VF_SPOOFCHK, sizeof(vf_spoofchk), | |
1003 | &vf_spoofchk)) | |
1004 | goto nla_put_failure; | |
c02db8c6 | 1005 | nla_nest_end(skb, vf); |
ebc08a6f | 1006 | } |
c02db8c6 | 1007 | nla_nest_end(skb, vfinfo); |
ebc08a6f | 1008 | } |
57b61080 SF |
1009 | |
1010 | if (rtnl_port_fill(skb, dev)) | |
1011 | goto nla_put_failure; | |
1012 | ||
38f7b870 PM |
1013 | if (dev->rtnl_link_ops) { |
1014 | if (rtnl_link_fill(skb, dev) < 0) | |
1015 | goto nla_put_failure; | |
1016 | } | |
1017 | ||
f8ff182c TG |
1018 | if (!(af_spec = nla_nest_start(skb, IFLA_AF_SPEC))) |
1019 | goto nla_put_failure; | |
1020 | ||
1021 | list_for_each_entry(af_ops, &rtnl_af_ops, list) { | |
1022 | if (af_ops->fill_link_af) { | |
1023 | struct nlattr *af; | |
1024 | int err; | |
1025 | ||
1026 | if (!(af = nla_nest_start(skb, af_ops->family))) | |
1027 | goto nla_put_failure; | |
1028 | ||
1029 | err = af_ops->fill_link_af(skb, dev); | |
1030 | ||
1031 | /* | |
1032 | * Caller may return ENODATA to indicate that there | |
1033 | * was no data to be dumped. This is not an error, it | |
1034 | * means we should trim the attribute header and | |
1035 | * continue. | |
1036 | */ | |
1037 | if (err == -ENODATA) | |
1038 | nla_nest_cancel(skb, af); | |
1039 | else if (err < 0) | |
1040 | goto nla_put_failure; | |
1041 | ||
1042 | nla_nest_end(skb, af); | |
1043 | } | |
1044 | } | |
1045 | ||
1046 | nla_nest_end(skb, af_spec); | |
1047 | ||
b60c5115 TG |
1048 | return nlmsg_end(skb, nlh); |
1049 | ||
1050 | nla_put_failure: | |
26932566 PM |
1051 | nlmsg_cancel(skb, nlh); |
1052 | return -EMSGSIZE; | |
1da177e4 LT |
1053 | } |
1054 | ||
b60c5115 | 1055 | static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb) |
1da177e4 | 1056 | { |
3b1e0a65 | 1057 | struct net *net = sock_net(skb->sk); |
7c28bd0b ED |
1058 | int h, s_h; |
1059 | int idx = 0, s_idx; | |
1da177e4 | 1060 | struct net_device *dev; |
7c28bd0b ED |
1061 | struct hlist_head *head; |
1062 | struct hlist_node *node; | |
115c9b81 GR |
1063 | struct nlattr *tb[IFLA_MAX+1]; |
1064 | u32 ext_filter_mask = 0; | |
7c28bd0b ED |
1065 | |
1066 | s_h = cb->args[0]; | |
1067 | s_idx = cb->args[1]; | |
1068 | ||
e67f88dd | 1069 | rcu_read_lock(); |
4e985ada TG |
1070 | cb->seq = net->dev_base_seq; |
1071 | ||
a4b64fbe ED |
1072 | if (nlmsg_parse(cb->nlh, sizeof(struct rtgenmsg), tb, IFLA_MAX, |
1073 | ifla_policy) >= 0) { | |
115c9b81 | 1074 | |
a4b64fbe ED |
1075 | if (tb[IFLA_EXT_MASK]) |
1076 | ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]); | |
1077 | } | |
115c9b81 | 1078 | |
7c28bd0b ED |
1079 | for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) { |
1080 | idx = 0; | |
1081 | head = &net->dev_index_head[h]; | |
e67f88dd | 1082 | hlist_for_each_entry_rcu(dev, node, head, index_hlist) { |
7c28bd0b ED |
1083 | if (idx < s_idx) |
1084 | goto cont; | |
1085 | if (rtnl_fill_ifinfo(skb, dev, RTM_NEWLINK, | |
15e47304 | 1086 | NETLINK_CB(cb->skb).portid, |
7c28bd0b | 1087 | cb->nlh->nlmsg_seq, 0, |
115c9b81 GR |
1088 | NLM_F_MULTI, |
1089 | ext_filter_mask) <= 0) | |
7c28bd0b | 1090 | goto out; |
4e985ada TG |
1091 | |
1092 | nl_dump_check_consistent(cb, nlmsg_hdr(skb)); | |
7562f876 | 1093 | cont: |
7c28bd0b ED |
1094 | idx++; |
1095 | } | |
1da177e4 | 1096 | } |
7c28bd0b | 1097 | out: |
e67f88dd | 1098 | rcu_read_unlock(); |
7c28bd0b ED |
1099 | cb->args[1] = idx; |
1100 | cb->args[0] = h; | |
1da177e4 LT |
1101 | |
1102 | return skb->len; | |
1103 | } | |
1104 | ||
e7199288 | 1105 | const struct nla_policy ifla_policy[IFLA_MAX+1] = { |
5176f91e | 1106 | [IFLA_IFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ-1 }, |
38f7b870 PM |
1107 | [IFLA_ADDRESS] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN }, |
1108 | [IFLA_BROADCAST] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN }, | |
5176f91e | 1109 | [IFLA_MAP] = { .len = sizeof(struct rtnl_link_ifmap) }, |
da5e0494 | 1110 | [IFLA_MTU] = { .type = NLA_U32 }, |
76e87306 | 1111 | [IFLA_LINK] = { .type = NLA_U32 }, |
fbaec0ea | 1112 | [IFLA_MASTER] = { .type = NLA_U32 }, |
9a57247f | 1113 | [IFLA_CARRIER] = { .type = NLA_U8 }, |
da5e0494 TG |
1114 | [IFLA_TXQLEN] = { .type = NLA_U32 }, |
1115 | [IFLA_WEIGHT] = { .type = NLA_U32 }, | |
1116 | [IFLA_OPERSTATE] = { .type = NLA_U8 }, | |
1117 | [IFLA_LINKMODE] = { .type = NLA_U8 }, | |
76e87306 | 1118 | [IFLA_LINKINFO] = { .type = NLA_NESTED }, |
d8a5ec67 | 1119 | [IFLA_NET_NS_PID] = { .type = NLA_U32 }, |
f0630529 | 1120 | [IFLA_NET_NS_FD] = { .type = NLA_U32 }, |
0b815a1a | 1121 | [IFLA_IFALIAS] = { .type = NLA_STRING, .len = IFALIASZ-1 }, |
c02db8c6 | 1122 | [IFLA_VFINFO_LIST] = {. type = NLA_NESTED }, |
57b61080 SF |
1123 | [IFLA_VF_PORTS] = { .type = NLA_NESTED }, |
1124 | [IFLA_PORT_SELF] = { .type = NLA_NESTED }, | |
f8ff182c | 1125 | [IFLA_AF_SPEC] = { .type = NLA_NESTED }, |
115c9b81 | 1126 | [IFLA_EXT_MASK] = { .type = NLA_U32 }, |
edbc0bb3 | 1127 | [IFLA_PROMISCUITY] = { .type = NLA_U32 }, |
76ff5cc9 JP |
1128 | [IFLA_NUM_TX_QUEUES] = { .type = NLA_U32 }, |
1129 | [IFLA_NUM_RX_QUEUES] = { .type = NLA_U32 }, | |
da5e0494 | 1130 | }; |
e0d087af | 1131 | EXPORT_SYMBOL(ifla_policy); |
da5e0494 | 1132 | |
38f7b870 PM |
1133 | static const struct nla_policy ifla_info_policy[IFLA_INFO_MAX+1] = { |
1134 | [IFLA_INFO_KIND] = { .type = NLA_STRING }, | |
1135 | [IFLA_INFO_DATA] = { .type = NLA_NESTED }, | |
1136 | }; | |
1137 | ||
c02db8c6 CW |
1138 | static const struct nla_policy ifla_vfinfo_policy[IFLA_VF_INFO_MAX+1] = { |
1139 | [IFLA_VF_INFO] = { .type = NLA_NESTED }, | |
1140 | }; | |
1141 | ||
1142 | static const struct nla_policy ifla_vf_policy[IFLA_VF_MAX+1] = { | |
1143 | [IFLA_VF_MAC] = { .type = NLA_BINARY, | |
1144 | .len = sizeof(struct ifla_vf_mac) }, | |
1145 | [IFLA_VF_VLAN] = { .type = NLA_BINARY, | |
1146 | .len = sizeof(struct ifla_vf_vlan) }, | |
1147 | [IFLA_VF_TX_RATE] = { .type = NLA_BINARY, | |
1148 | .len = sizeof(struct ifla_vf_tx_rate) }, | |
48752f65 GR |
1149 | [IFLA_VF_SPOOFCHK] = { .type = NLA_BINARY, |
1150 | .len = sizeof(struct ifla_vf_spoofchk) }, | |
c02db8c6 CW |
1151 | }; |
1152 | ||
57b61080 SF |
1153 | static const struct nla_policy ifla_port_policy[IFLA_PORT_MAX+1] = { |
1154 | [IFLA_PORT_VF] = { .type = NLA_U32 }, | |
1155 | [IFLA_PORT_PROFILE] = { .type = NLA_STRING, | |
1156 | .len = PORT_PROFILE_MAX }, | |
1157 | [IFLA_PORT_VSI_TYPE] = { .type = NLA_BINARY, | |
1158 | .len = sizeof(struct ifla_port_vsi)}, | |
1159 | [IFLA_PORT_INSTANCE_UUID] = { .type = NLA_BINARY, | |
1160 | .len = PORT_UUID_MAX }, | |
1161 | [IFLA_PORT_HOST_UUID] = { .type = NLA_STRING, | |
1162 | .len = PORT_UUID_MAX }, | |
1163 | [IFLA_PORT_REQUEST] = { .type = NLA_U8, }, | |
1164 | [IFLA_PORT_RESPONSE] = { .type = NLA_U16, }, | |
1165 | }; | |
1166 | ||
81adee47 EB |
1167 | struct net *rtnl_link_get_net(struct net *src_net, struct nlattr *tb[]) |
1168 | { | |
1169 | struct net *net; | |
1170 | /* Examine the link attributes and figure out which | |
1171 | * network namespace we are talking about. | |
1172 | */ | |
1173 | if (tb[IFLA_NET_NS_PID]) | |
1174 | net = get_net_ns_by_pid(nla_get_u32(tb[IFLA_NET_NS_PID])); | |
f0630529 EB |
1175 | else if (tb[IFLA_NET_NS_FD]) |
1176 | net = get_net_ns_by_fd(nla_get_u32(tb[IFLA_NET_NS_FD])); | |
81adee47 EB |
1177 | else |
1178 | net = get_net(src_net); | |
1179 | return net; | |
1180 | } | |
1181 | EXPORT_SYMBOL(rtnl_link_get_net); | |
1182 | ||
1840bb13 TG |
1183 | static int validate_linkmsg(struct net_device *dev, struct nlattr *tb[]) |
1184 | { | |
1185 | if (dev) { | |
1186 | if (tb[IFLA_ADDRESS] && | |
1187 | nla_len(tb[IFLA_ADDRESS]) < dev->addr_len) | |
1188 | return -EINVAL; | |
1189 | ||
1190 | if (tb[IFLA_BROADCAST] && | |
1191 | nla_len(tb[IFLA_BROADCAST]) < dev->addr_len) | |
1192 | return -EINVAL; | |
1193 | } | |
1194 | ||
cf7afbfe TG |
1195 | if (tb[IFLA_AF_SPEC]) { |
1196 | struct nlattr *af; | |
1197 | int rem, err; | |
1198 | ||
1199 | nla_for_each_nested(af, tb[IFLA_AF_SPEC], rem) { | |
1200 | const struct rtnl_af_ops *af_ops; | |
1201 | ||
1202 | if (!(af_ops = rtnl_af_lookup(nla_type(af)))) | |
1203 | return -EAFNOSUPPORT; | |
1204 | ||
1205 | if (!af_ops->set_link_af) | |
1206 | return -EOPNOTSUPP; | |
1207 | ||
1208 | if (af_ops->validate_link_af) { | |
6d3a9a68 | 1209 | err = af_ops->validate_link_af(dev, af); |
cf7afbfe TG |
1210 | if (err < 0) |
1211 | return err; | |
1212 | } | |
1213 | } | |
1214 | } | |
1215 | ||
1840bb13 TG |
1216 | return 0; |
1217 | } | |
1218 | ||
c02db8c6 CW |
1219 | static int do_setvfinfo(struct net_device *dev, struct nlattr *attr) |
1220 | { | |
1221 | int rem, err = -EINVAL; | |
1222 | struct nlattr *vf; | |
1223 | const struct net_device_ops *ops = dev->netdev_ops; | |
1224 | ||
1225 | nla_for_each_nested(vf, attr, rem) { | |
1226 | switch (nla_type(vf)) { | |
1227 | case IFLA_VF_MAC: { | |
1228 | struct ifla_vf_mac *ivm; | |
1229 | ivm = nla_data(vf); | |
1230 | err = -EOPNOTSUPP; | |
1231 | if (ops->ndo_set_vf_mac) | |
1232 | err = ops->ndo_set_vf_mac(dev, ivm->vf, | |
1233 | ivm->mac); | |
1234 | break; | |
1235 | } | |
1236 | case IFLA_VF_VLAN: { | |
1237 | struct ifla_vf_vlan *ivv; | |
1238 | ivv = nla_data(vf); | |
1239 | err = -EOPNOTSUPP; | |
1240 | if (ops->ndo_set_vf_vlan) | |
1241 | err = ops->ndo_set_vf_vlan(dev, ivv->vf, | |
1242 | ivv->vlan, | |
1243 | ivv->qos); | |
1244 | break; | |
1245 | } | |
1246 | case IFLA_VF_TX_RATE: { | |
1247 | struct ifla_vf_tx_rate *ivt; | |
1248 | ivt = nla_data(vf); | |
1249 | err = -EOPNOTSUPP; | |
1250 | if (ops->ndo_set_vf_tx_rate) | |
1251 | err = ops->ndo_set_vf_tx_rate(dev, ivt->vf, | |
1252 | ivt->rate); | |
1253 | break; | |
1254 | } | |
5f8444a3 GR |
1255 | case IFLA_VF_SPOOFCHK: { |
1256 | struct ifla_vf_spoofchk *ivs; | |
1257 | ivs = nla_data(vf); | |
1258 | err = -EOPNOTSUPP; | |
1259 | if (ops->ndo_set_vf_spoofchk) | |
1260 | err = ops->ndo_set_vf_spoofchk(dev, ivs->vf, | |
1261 | ivs->setting); | |
1262 | break; | |
1263 | } | |
c02db8c6 CW |
1264 | default: |
1265 | err = -EINVAL; | |
1266 | break; | |
1267 | } | |
1268 | if (err) | |
1269 | break; | |
1270 | } | |
1271 | return err; | |
1272 | } | |
1273 | ||
fbaec0ea JP |
1274 | static int do_set_master(struct net_device *dev, int ifindex) |
1275 | { | |
1276 | struct net_device *master_dev; | |
1277 | const struct net_device_ops *ops; | |
1278 | int err; | |
1279 | ||
1280 | if (dev->master) { | |
1281 | if (dev->master->ifindex == ifindex) | |
1282 | return 0; | |
1283 | ops = dev->master->netdev_ops; | |
1284 | if (ops->ndo_del_slave) { | |
1285 | err = ops->ndo_del_slave(dev->master, dev); | |
1286 | if (err) | |
1287 | return err; | |
1288 | } else { | |
1289 | return -EOPNOTSUPP; | |
1290 | } | |
1291 | } | |
1292 | ||
1293 | if (ifindex) { | |
1294 | master_dev = __dev_get_by_index(dev_net(dev), ifindex); | |
1295 | if (!master_dev) | |
1296 | return -EINVAL; | |
1297 | ops = master_dev->netdev_ops; | |
1298 | if (ops->ndo_add_slave) { | |
1299 | err = ops->ndo_add_slave(master_dev, dev); | |
1300 | if (err) | |
1301 | return err; | |
1302 | } else { | |
1303 | return -EOPNOTSUPP; | |
1304 | } | |
1305 | } | |
1306 | return 0; | |
1307 | } | |
1308 | ||
0157f60c | 1309 | static int do_setlink(struct net_device *dev, struct ifinfomsg *ifm, |
38f7b870 | 1310 | struct nlattr **tb, char *ifname, int modified) |
1da177e4 | 1311 | { |
d314774c | 1312 | const struct net_device_ops *ops = dev->netdev_ops; |
0157f60c | 1313 | int err; |
1da177e4 | 1314 | |
f0630529 | 1315 | if (tb[IFLA_NET_NS_PID] || tb[IFLA_NET_NS_FD]) { |
81adee47 | 1316 | struct net *net = rtnl_link_get_net(dev_net(dev), tb); |
d8a5ec67 EB |
1317 | if (IS_ERR(net)) { |
1318 | err = PTR_ERR(net); | |
1319 | goto errout; | |
1320 | } | |
b51642f6 EB |
1321 | if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) { |
1322 | err = -EPERM; | |
1323 | goto errout; | |
1324 | } | |
d8a5ec67 EB |
1325 | err = dev_change_net_namespace(dev, net, ifname); |
1326 | put_net(net); | |
1327 | if (err) | |
1328 | goto errout; | |
1329 | modified = 1; | |
1330 | } | |
1331 | ||
da5e0494 | 1332 | if (tb[IFLA_MAP]) { |
1da177e4 LT |
1333 | struct rtnl_link_ifmap *u_map; |
1334 | struct ifmap k_map; | |
1335 | ||
d314774c | 1336 | if (!ops->ndo_set_config) { |
1da177e4 | 1337 | err = -EOPNOTSUPP; |
0157f60c | 1338 | goto errout; |
1da177e4 LT |
1339 | } |
1340 | ||
1341 | if (!netif_device_present(dev)) { | |
1342 | err = -ENODEV; | |
0157f60c | 1343 | goto errout; |
1da177e4 | 1344 | } |
1da177e4 | 1345 | |
da5e0494 | 1346 | u_map = nla_data(tb[IFLA_MAP]); |
1da177e4 LT |
1347 | k_map.mem_start = (unsigned long) u_map->mem_start; |
1348 | k_map.mem_end = (unsigned long) u_map->mem_end; | |
1349 | k_map.base_addr = (unsigned short) u_map->base_addr; | |
1350 | k_map.irq = (unsigned char) u_map->irq; | |
1351 | k_map.dma = (unsigned char) u_map->dma; | |
1352 | k_map.port = (unsigned char) u_map->port; | |
1353 | ||
d314774c | 1354 | err = ops->ndo_set_config(dev, &k_map); |
da5e0494 | 1355 | if (err < 0) |
0157f60c | 1356 | goto errout; |
1da177e4 | 1357 | |
da5e0494 | 1358 | modified = 1; |
1da177e4 LT |
1359 | } |
1360 | ||
da5e0494 | 1361 | if (tb[IFLA_ADDRESS]) { |
70f8e78e DM |
1362 | struct sockaddr *sa; |
1363 | int len; | |
1364 | ||
70f8e78e DM |
1365 | len = sizeof(sa_family_t) + dev->addr_len; |
1366 | sa = kmalloc(len, GFP_KERNEL); | |
1367 | if (!sa) { | |
1368 | err = -ENOMEM; | |
0157f60c | 1369 | goto errout; |
70f8e78e DM |
1370 | } |
1371 | sa->sa_family = dev->type; | |
da5e0494 | 1372 | memcpy(sa->sa_data, nla_data(tb[IFLA_ADDRESS]), |
70f8e78e | 1373 | dev->addr_len); |
e7c3273e | 1374 | err = dev_set_mac_address(dev, sa); |
70f8e78e | 1375 | kfree(sa); |
1da177e4 | 1376 | if (err) |
0157f60c | 1377 | goto errout; |
da5e0494 | 1378 | modified = 1; |
1da177e4 LT |
1379 | } |
1380 | ||
da5e0494 TG |
1381 | if (tb[IFLA_MTU]) { |
1382 | err = dev_set_mtu(dev, nla_get_u32(tb[IFLA_MTU])); | |
1383 | if (err < 0) | |
0157f60c | 1384 | goto errout; |
da5e0494 | 1385 | modified = 1; |
1da177e4 LT |
1386 | } |
1387 | ||
cbda10fa VD |
1388 | if (tb[IFLA_GROUP]) { |
1389 | dev_set_group(dev, nla_get_u32(tb[IFLA_GROUP])); | |
1390 | modified = 1; | |
1391 | } | |
1392 | ||
da5e0494 TG |
1393 | /* |
1394 | * Interface selected by interface index but interface | |
1395 | * name provided implies that a name change has been | |
1396 | * requested. | |
1397 | */ | |
51055be8 | 1398 | if (ifm->ifi_index > 0 && ifname[0]) { |
da5e0494 TG |
1399 | err = dev_change_name(dev, ifname); |
1400 | if (err < 0) | |
0157f60c | 1401 | goto errout; |
da5e0494 | 1402 | modified = 1; |
1da177e4 LT |
1403 | } |
1404 | ||
0b815a1a SH |
1405 | if (tb[IFLA_IFALIAS]) { |
1406 | err = dev_set_alias(dev, nla_data(tb[IFLA_IFALIAS]), | |
1407 | nla_len(tb[IFLA_IFALIAS])); | |
1408 | if (err < 0) | |
1409 | goto errout; | |
1410 | modified = 1; | |
1411 | } | |
1412 | ||
da5e0494 TG |
1413 | if (tb[IFLA_BROADCAST]) { |
1414 | nla_memcpy(dev->broadcast, tb[IFLA_BROADCAST], dev->addr_len); | |
e7c3273e | 1415 | call_netdevice_notifiers(NETDEV_CHANGEADDR, dev); |
1da177e4 LT |
1416 | } |
1417 | ||
83b496e9 | 1418 | if (ifm->ifi_flags || ifm->ifi_change) { |
3729d502 | 1419 | err = dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm)); |
5f9021cf JB |
1420 | if (err < 0) |
1421 | goto errout; | |
83b496e9 | 1422 | } |
1da177e4 | 1423 | |
fbaec0ea JP |
1424 | if (tb[IFLA_MASTER]) { |
1425 | err = do_set_master(dev, nla_get_u32(tb[IFLA_MASTER])); | |
1426 | if (err) | |
1427 | goto errout; | |
1428 | modified = 1; | |
1429 | } | |
1430 | ||
9a57247f JP |
1431 | if (tb[IFLA_CARRIER]) { |
1432 | err = dev_change_carrier(dev, nla_get_u8(tb[IFLA_CARRIER])); | |
1433 | if (err) | |
1434 | goto errout; | |
1435 | modified = 1; | |
1436 | } | |
1437 | ||
93b2d4a2 DM |
1438 | if (tb[IFLA_TXQLEN]) |
1439 | dev->tx_queue_len = nla_get_u32(tb[IFLA_TXQLEN]); | |
b00055aa | 1440 | |
da5e0494 | 1441 | if (tb[IFLA_OPERSTATE]) |
93b2d4a2 | 1442 | set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE])); |
b00055aa | 1443 | |
da5e0494 | 1444 | if (tb[IFLA_LINKMODE]) { |
93b2d4a2 DM |
1445 | write_lock_bh(&dev_base_lock); |
1446 | dev->link_mode = nla_get_u8(tb[IFLA_LINKMODE]); | |
1447 | write_unlock_bh(&dev_base_lock); | |
b00055aa SR |
1448 | } |
1449 | ||
c02db8c6 CW |
1450 | if (tb[IFLA_VFINFO_LIST]) { |
1451 | struct nlattr *attr; | |
1452 | int rem; | |
1453 | nla_for_each_nested(attr, tb[IFLA_VFINFO_LIST], rem) { | |
253683bb DH |
1454 | if (nla_type(attr) != IFLA_VF_INFO) { |
1455 | err = -EINVAL; | |
c02db8c6 | 1456 | goto errout; |
253683bb | 1457 | } |
c02db8c6 CW |
1458 | err = do_setvfinfo(dev, attr); |
1459 | if (err < 0) | |
1460 | goto errout; | |
1461 | modified = 1; | |
1462 | } | |
ebc08a6f | 1463 | } |
1da177e4 LT |
1464 | err = 0; |
1465 | ||
57b61080 SF |
1466 | if (tb[IFLA_VF_PORTS]) { |
1467 | struct nlattr *port[IFLA_PORT_MAX+1]; | |
1468 | struct nlattr *attr; | |
1469 | int vf; | |
1470 | int rem; | |
1471 | ||
1472 | err = -EOPNOTSUPP; | |
1473 | if (!ops->ndo_set_vf_port) | |
1474 | goto errout; | |
1475 | ||
1476 | nla_for_each_nested(attr, tb[IFLA_VF_PORTS], rem) { | |
1477 | if (nla_type(attr) != IFLA_VF_PORT) | |
1478 | continue; | |
1479 | err = nla_parse_nested(port, IFLA_PORT_MAX, | |
1480 | attr, ifla_port_policy); | |
1481 | if (err < 0) | |
1482 | goto errout; | |
1483 | if (!port[IFLA_PORT_VF]) { | |
1484 | err = -EOPNOTSUPP; | |
1485 | goto errout; | |
1486 | } | |
1487 | vf = nla_get_u32(port[IFLA_PORT_VF]); | |
1488 | err = ops->ndo_set_vf_port(dev, vf, port); | |
1489 | if (err < 0) | |
1490 | goto errout; | |
1491 | modified = 1; | |
1492 | } | |
1493 | } | |
1494 | err = 0; | |
1495 | ||
1496 | if (tb[IFLA_PORT_SELF]) { | |
1497 | struct nlattr *port[IFLA_PORT_MAX+1]; | |
1498 | ||
1499 | err = nla_parse_nested(port, IFLA_PORT_MAX, | |
1500 | tb[IFLA_PORT_SELF], ifla_port_policy); | |
1501 | if (err < 0) | |
1502 | goto errout; | |
1503 | ||
1504 | err = -EOPNOTSUPP; | |
1505 | if (ops->ndo_set_vf_port) | |
1506 | err = ops->ndo_set_vf_port(dev, PORT_SELF_VF, port); | |
1507 | if (err < 0) | |
1508 | goto errout; | |
1509 | modified = 1; | |
1510 | } | |
f8ff182c TG |
1511 | |
1512 | if (tb[IFLA_AF_SPEC]) { | |
1513 | struct nlattr *af; | |
1514 | int rem; | |
1515 | ||
1516 | nla_for_each_nested(af, tb[IFLA_AF_SPEC], rem) { | |
1517 | const struct rtnl_af_ops *af_ops; | |
1518 | ||
1519 | if (!(af_ops = rtnl_af_lookup(nla_type(af)))) | |
cf7afbfe | 1520 | BUG(); |
f8ff182c | 1521 | |
cf7afbfe | 1522 | err = af_ops->set_link_af(dev, af); |
f8ff182c TG |
1523 | if (err < 0) |
1524 | goto errout; | |
1525 | ||
1526 | modified = 1; | |
1527 | } | |
1528 | } | |
57b61080 SF |
1529 | err = 0; |
1530 | ||
0157f60c | 1531 | errout: |
e87cc472 JP |
1532 | if (err < 0 && modified) |
1533 | 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", | |
1534 | dev->name); | |
da5e0494 | 1535 | |
0157f60c PM |
1536 | return err; |
1537 | } | |
1da177e4 | 1538 | |
0157f60c PM |
1539 | static int rtnl_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) |
1540 | { | |
3b1e0a65 | 1541 | struct net *net = sock_net(skb->sk); |
0157f60c PM |
1542 | struct ifinfomsg *ifm; |
1543 | struct net_device *dev; | |
1544 | int err; | |
1545 | struct nlattr *tb[IFLA_MAX+1]; | |
1546 | char ifname[IFNAMSIZ]; | |
1547 | ||
1548 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); | |
1549 | if (err < 0) | |
1550 | goto errout; | |
1551 | ||
1552 | if (tb[IFLA_IFNAME]) | |
1553 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
1554 | else | |
1555 | ifname[0] = '\0'; | |
1556 | ||
1557 | err = -EINVAL; | |
1558 | ifm = nlmsg_data(nlh); | |
1559 | if (ifm->ifi_index > 0) | |
a3d12891 | 1560 | dev = __dev_get_by_index(net, ifm->ifi_index); |
0157f60c | 1561 | else if (tb[IFLA_IFNAME]) |
a3d12891 | 1562 | dev = __dev_get_by_name(net, ifname); |
0157f60c PM |
1563 | else |
1564 | goto errout; | |
1565 | ||
1566 | if (dev == NULL) { | |
1567 | err = -ENODEV; | |
1568 | goto errout; | |
1569 | } | |
1570 | ||
e0d087af ED |
1571 | err = validate_linkmsg(dev, tb); |
1572 | if (err < 0) | |
a3d12891 | 1573 | goto errout; |
0157f60c | 1574 | |
38f7b870 | 1575 | err = do_setlink(dev, ifm, tb, ifname, 0); |
da5e0494 | 1576 | errout: |
1da177e4 LT |
1577 | return err; |
1578 | } | |
1579 | ||
38f7b870 PM |
1580 | static int rtnl_dellink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) |
1581 | { | |
3b1e0a65 | 1582 | struct net *net = sock_net(skb->sk); |
38f7b870 PM |
1583 | const struct rtnl_link_ops *ops; |
1584 | struct net_device *dev; | |
1585 | struct ifinfomsg *ifm; | |
1586 | char ifname[IFNAMSIZ]; | |
1587 | struct nlattr *tb[IFLA_MAX+1]; | |
1588 | int err; | |
226bd341 | 1589 | LIST_HEAD(list_kill); |
38f7b870 PM |
1590 | |
1591 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); | |
1592 | if (err < 0) | |
1593 | return err; | |
1594 | ||
1595 | if (tb[IFLA_IFNAME]) | |
1596 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
1597 | ||
1598 | ifm = nlmsg_data(nlh); | |
1599 | if (ifm->ifi_index > 0) | |
881d966b | 1600 | dev = __dev_get_by_index(net, ifm->ifi_index); |
38f7b870 | 1601 | else if (tb[IFLA_IFNAME]) |
881d966b | 1602 | dev = __dev_get_by_name(net, ifname); |
38f7b870 PM |
1603 | else |
1604 | return -EINVAL; | |
1605 | ||
1606 | if (!dev) | |
1607 | return -ENODEV; | |
1608 | ||
1609 | ops = dev->rtnl_link_ops; | |
1610 | if (!ops) | |
1611 | return -EOPNOTSUPP; | |
1612 | ||
226bd341 ED |
1613 | ops->dellink(dev, &list_kill); |
1614 | unregister_netdevice_many(&list_kill); | |
1615 | list_del(&list_kill); | |
38f7b870 PM |
1616 | return 0; |
1617 | } | |
1618 | ||
3729d502 PM |
1619 | int rtnl_configure_link(struct net_device *dev, const struct ifinfomsg *ifm) |
1620 | { | |
1621 | unsigned int old_flags; | |
1622 | int err; | |
1623 | ||
1624 | old_flags = dev->flags; | |
1625 | if (ifm && (ifm->ifi_flags || ifm->ifi_change)) { | |
1626 | err = __dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm)); | |
1627 | if (err < 0) | |
1628 | return err; | |
1629 | } | |
1630 | ||
1631 | dev->rtnl_link_state = RTNL_LINK_INITIALIZED; | |
1632 | rtmsg_ifinfo(RTM_NEWLINK, dev, ~0U); | |
1633 | ||
1634 | __dev_notify_flags(dev, old_flags); | |
1635 | return 0; | |
1636 | } | |
1637 | EXPORT_SYMBOL(rtnl_configure_link); | |
1638 | ||
c0713563 | 1639 | struct net_device *rtnl_create_link(struct net *net, |
81adee47 | 1640 | char *ifname, const struct rtnl_link_ops *ops, struct nlattr *tb[]) |
e7199288 PE |
1641 | { |
1642 | int err; | |
1643 | struct net_device *dev; | |
d40156aa JP |
1644 | unsigned int num_tx_queues = 1; |
1645 | unsigned int num_rx_queues = 1; | |
e7199288 | 1646 | |
76ff5cc9 JP |
1647 | if (tb[IFLA_NUM_TX_QUEUES]) |
1648 | num_tx_queues = nla_get_u32(tb[IFLA_NUM_TX_QUEUES]); | |
1649 | else if (ops->get_num_tx_queues) | |
d40156aa | 1650 | num_tx_queues = ops->get_num_tx_queues(); |
76ff5cc9 JP |
1651 | |
1652 | if (tb[IFLA_NUM_RX_QUEUES]) | |
1653 | num_rx_queues = nla_get_u32(tb[IFLA_NUM_RX_QUEUES]); | |
1654 | else if (ops->get_num_rx_queues) | |
d40156aa | 1655 | num_rx_queues = ops->get_num_rx_queues(); |
efacb309 | 1656 | |
e7199288 | 1657 | err = -ENOMEM; |
d40156aa JP |
1658 | dev = alloc_netdev_mqs(ops->priv_size, ifname, ops->setup, |
1659 | num_tx_queues, num_rx_queues); | |
e7199288 PE |
1660 | if (!dev) |
1661 | goto err; | |
1662 | ||
81adee47 EB |
1663 | dev_net_set(dev, net); |
1664 | dev->rtnl_link_ops = ops; | |
3729d502 | 1665 | dev->rtnl_link_state = RTNL_LINK_INITIALIZING; |
81adee47 | 1666 | |
e7199288 PE |
1667 | if (tb[IFLA_MTU]) |
1668 | dev->mtu = nla_get_u32(tb[IFLA_MTU]); | |
1669 | if (tb[IFLA_ADDRESS]) | |
1670 | memcpy(dev->dev_addr, nla_data(tb[IFLA_ADDRESS]), | |
1671 | nla_len(tb[IFLA_ADDRESS])); | |
1672 | if (tb[IFLA_BROADCAST]) | |
1673 | memcpy(dev->broadcast, nla_data(tb[IFLA_BROADCAST]), | |
1674 | nla_len(tb[IFLA_BROADCAST])); | |
1675 | if (tb[IFLA_TXQLEN]) | |
1676 | dev->tx_queue_len = nla_get_u32(tb[IFLA_TXQLEN]); | |
1677 | if (tb[IFLA_OPERSTATE]) | |
93b2d4a2 | 1678 | set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE])); |
e7199288 PE |
1679 | if (tb[IFLA_LINKMODE]) |
1680 | dev->link_mode = nla_get_u8(tb[IFLA_LINKMODE]); | |
ffa934f1 PM |
1681 | if (tb[IFLA_GROUP]) |
1682 | dev_set_group(dev, nla_get_u32(tb[IFLA_GROUP])); | |
e7199288 PE |
1683 | |
1684 | return dev; | |
1685 | ||
e7199288 PE |
1686 | err: |
1687 | return ERR_PTR(err); | |
1688 | } | |
e0d087af | 1689 | EXPORT_SYMBOL(rtnl_create_link); |
e7199288 | 1690 | |
e7ed828f VD |
1691 | static int rtnl_group_changelink(struct net *net, int group, |
1692 | struct ifinfomsg *ifm, | |
1693 | struct nlattr **tb) | |
1694 | { | |
1695 | struct net_device *dev; | |
1696 | int err; | |
1697 | ||
1698 | for_each_netdev(net, dev) { | |
1699 | if (dev->group == group) { | |
1700 | err = do_setlink(dev, ifm, tb, NULL, 0); | |
1701 | if (err < 0) | |
1702 | return err; | |
1703 | } | |
1704 | } | |
1705 | ||
1706 | return 0; | |
1707 | } | |
1708 | ||
38f7b870 PM |
1709 | static int rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) |
1710 | { | |
3b1e0a65 | 1711 | struct net *net = sock_net(skb->sk); |
38f7b870 PM |
1712 | const struct rtnl_link_ops *ops; |
1713 | struct net_device *dev; | |
1714 | struct ifinfomsg *ifm; | |
1715 | char kind[MODULE_NAME_LEN]; | |
1716 | char ifname[IFNAMSIZ]; | |
1717 | struct nlattr *tb[IFLA_MAX+1]; | |
1718 | struct nlattr *linkinfo[IFLA_INFO_MAX+1]; | |
1719 | int err; | |
1720 | ||
95a5afca | 1721 | #ifdef CONFIG_MODULES |
38f7b870 | 1722 | replay: |
8072f085 | 1723 | #endif |
38f7b870 PM |
1724 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); |
1725 | if (err < 0) | |
1726 | return err; | |
1727 | ||
1728 | if (tb[IFLA_IFNAME]) | |
1729 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
1730 | else | |
1731 | ifname[0] = '\0'; | |
1732 | ||
1733 | ifm = nlmsg_data(nlh); | |
1734 | if (ifm->ifi_index > 0) | |
881d966b | 1735 | dev = __dev_get_by_index(net, ifm->ifi_index); |
e7ed828f VD |
1736 | else { |
1737 | if (ifname[0]) | |
1738 | dev = __dev_get_by_name(net, ifname); | |
e7ed828f VD |
1739 | else |
1740 | dev = NULL; | |
1741 | } | |
38f7b870 | 1742 | |
e0d087af ED |
1743 | err = validate_linkmsg(dev, tb); |
1744 | if (err < 0) | |
1840bb13 TG |
1745 | return err; |
1746 | ||
38f7b870 PM |
1747 | if (tb[IFLA_LINKINFO]) { |
1748 | err = nla_parse_nested(linkinfo, IFLA_INFO_MAX, | |
1749 | tb[IFLA_LINKINFO], ifla_info_policy); | |
1750 | if (err < 0) | |
1751 | return err; | |
1752 | } else | |
1753 | memset(linkinfo, 0, sizeof(linkinfo)); | |
1754 | ||
1755 | if (linkinfo[IFLA_INFO_KIND]) { | |
1756 | nla_strlcpy(kind, linkinfo[IFLA_INFO_KIND], sizeof(kind)); | |
1757 | ops = rtnl_link_ops_get(kind); | |
1758 | } else { | |
1759 | kind[0] = '\0'; | |
1760 | ops = NULL; | |
1761 | } | |
1762 | ||
1763 | if (1) { | |
1764 | struct nlattr *attr[ops ? ops->maxtype + 1 : 0], **data = NULL; | |
81adee47 | 1765 | struct net *dest_net; |
38f7b870 PM |
1766 | |
1767 | if (ops) { | |
1768 | if (ops->maxtype && linkinfo[IFLA_INFO_DATA]) { | |
1769 | err = nla_parse_nested(attr, ops->maxtype, | |
1770 | linkinfo[IFLA_INFO_DATA], | |
1771 | ops->policy); | |
1772 | if (err < 0) | |
1773 | return err; | |
1774 | data = attr; | |
1775 | } | |
1776 | if (ops->validate) { | |
1777 | err = ops->validate(tb, data); | |
1778 | if (err < 0) | |
1779 | return err; | |
1780 | } | |
1781 | } | |
1782 | ||
1783 | if (dev) { | |
1784 | int modified = 0; | |
1785 | ||
1786 | if (nlh->nlmsg_flags & NLM_F_EXCL) | |
1787 | return -EEXIST; | |
1788 | if (nlh->nlmsg_flags & NLM_F_REPLACE) | |
1789 | return -EOPNOTSUPP; | |
1790 | ||
1791 | if (linkinfo[IFLA_INFO_DATA]) { | |
1792 | if (!ops || ops != dev->rtnl_link_ops || | |
1793 | !ops->changelink) | |
1794 | return -EOPNOTSUPP; | |
1795 | ||
1796 | err = ops->changelink(dev, tb, data); | |
1797 | if (err < 0) | |
1798 | return err; | |
1799 | modified = 1; | |
1800 | } | |
1801 | ||
1802 | return do_setlink(dev, ifm, tb, ifname, modified); | |
1803 | } | |
1804 | ||
ffa934f1 PM |
1805 | if (!(nlh->nlmsg_flags & NLM_F_CREATE)) { |
1806 | if (ifm->ifi_index == 0 && tb[IFLA_GROUP]) | |
1807 | return rtnl_group_changelink(net, | |
1808 | nla_get_u32(tb[IFLA_GROUP]), | |
1809 | ifm, tb); | |
38f7b870 | 1810 | return -ENODEV; |
ffa934f1 | 1811 | } |
38f7b870 | 1812 | |
0e06877c | 1813 | if (tb[IFLA_MAP] || tb[IFLA_MASTER] || tb[IFLA_PROTINFO]) |
38f7b870 PM |
1814 | return -EOPNOTSUPP; |
1815 | ||
1816 | if (!ops) { | |
95a5afca | 1817 | #ifdef CONFIG_MODULES |
38f7b870 PM |
1818 | if (kind[0]) { |
1819 | __rtnl_unlock(); | |
1820 | request_module("rtnl-link-%s", kind); | |
1821 | rtnl_lock(); | |
1822 | ops = rtnl_link_ops_get(kind); | |
1823 | if (ops) | |
1824 | goto replay; | |
1825 | } | |
1826 | #endif | |
1827 | return -EOPNOTSUPP; | |
1828 | } | |
1829 | ||
1830 | if (!ifname[0]) | |
1831 | snprintf(ifname, IFNAMSIZ, "%s%%d", ops->kind); | |
e7199288 | 1832 | |
81adee47 | 1833 | dest_net = rtnl_link_get_net(net, tb); |
13ad1774 EB |
1834 | if (IS_ERR(dest_net)) |
1835 | return PTR_ERR(dest_net); | |
1836 | ||
c0713563 | 1837 | dev = rtnl_create_link(dest_net, ifname, ops, tb); |
9c7dafbf | 1838 | if (IS_ERR(dev)) { |
e7199288 | 1839 | err = PTR_ERR(dev); |
9c7dafbf PE |
1840 | goto out; |
1841 | } | |
1842 | ||
1843 | dev->ifindex = ifm->ifi_index; | |
1844 | ||
1845 | if (ops->newlink) | |
81adee47 | 1846 | err = ops->newlink(net, dev, tb, data); |
2d85cba2 PM |
1847 | else |
1848 | err = register_netdevice(dev); | |
80032cff DC |
1849 | |
1850 | if (err < 0 && !IS_ERR(dev)) | |
38f7b870 | 1851 | free_netdev(dev); |
80032cff | 1852 | if (err < 0) |
3729d502 | 1853 | goto out; |
81adee47 | 1854 | |
3729d502 PM |
1855 | err = rtnl_configure_link(dev, ifm); |
1856 | if (err < 0) | |
1857 | unregister_netdevice(dev); | |
1858 | out: | |
81adee47 | 1859 | put_net(dest_net); |
38f7b870 PM |
1860 | return err; |
1861 | } | |
1862 | } | |
1863 | ||
b60c5115 | 1864 | static int rtnl_getlink(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg) |
711e2c33 | 1865 | { |
3b1e0a65 | 1866 | struct net *net = sock_net(skb->sk); |
b60c5115 | 1867 | struct ifinfomsg *ifm; |
a3d12891 | 1868 | char ifname[IFNAMSIZ]; |
b60c5115 TG |
1869 | struct nlattr *tb[IFLA_MAX+1]; |
1870 | struct net_device *dev = NULL; | |
1871 | struct sk_buff *nskb; | |
339bf98f | 1872 | int err; |
115c9b81 | 1873 | u32 ext_filter_mask = 0; |
711e2c33 | 1874 | |
b60c5115 TG |
1875 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); |
1876 | if (err < 0) | |
9918f230 | 1877 | return err; |
b60c5115 | 1878 | |
a3d12891 ED |
1879 | if (tb[IFLA_IFNAME]) |
1880 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
1881 | ||
115c9b81 GR |
1882 | if (tb[IFLA_EXT_MASK]) |
1883 | ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]); | |
1884 | ||
b60c5115 | 1885 | ifm = nlmsg_data(nlh); |
a3d12891 ED |
1886 | if (ifm->ifi_index > 0) |
1887 | dev = __dev_get_by_index(net, ifm->ifi_index); | |
1888 | else if (tb[IFLA_IFNAME]) | |
1889 | dev = __dev_get_by_name(net, ifname); | |
1890 | else | |
711e2c33 | 1891 | return -EINVAL; |
711e2c33 | 1892 | |
a3d12891 ED |
1893 | if (dev == NULL) |
1894 | return -ENODEV; | |
1895 | ||
115c9b81 | 1896 | nskb = nlmsg_new(if_nlmsg_size(dev, ext_filter_mask), GFP_KERNEL); |
a3d12891 ED |
1897 | if (nskb == NULL) |
1898 | return -ENOBUFS; | |
b60c5115 | 1899 | |
15e47304 | 1900 | err = rtnl_fill_ifinfo(nskb, dev, RTM_NEWLINK, NETLINK_CB(skb).portid, |
115c9b81 | 1901 | nlh->nlmsg_seq, 0, 0, ext_filter_mask); |
26932566 PM |
1902 | if (err < 0) { |
1903 | /* -EMSGSIZE implies BUG in if_nlmsg_size */ | |
1904 | WARN_ON(err == -EMSGSIZE); | |
1905 | kfree_skb(nskb); | |
a3d12891 | 1906 | } else |
15e47304 | 1907 | err = rtnl_unicast(nskb, net, NETLINK_CB(skb).portid); |
711e2c33 | 1908 | |
b60c5115 | 1909 | return err; |
711e2c33 | 1910 | } |
711e2c33 | 1911 | |
115c9b81 | 1912 | static u16 rtnl_calcit(struct sk_buff *skb, struct nlmsghdr *nlh) |
c7ac8679 | 1913 | { |
115c9b81 GR |
1914 | struct net *net = sock_net(skb->sk); |
1915 | struct net_device *dev; | |
1916 | struct nlattr *tb[IFLA_MAX+1]; | |
1917 | u32 ext_filter_mask = 0; | |
1918 | u16 min_ifinfo_dump_size = 0; | |
1919 | ||
a4b64fbe ED |
1920 | if (nlmsg_parse(nlh, sizeof(struct rtgenmsg), tb, IFLA_MAX, |
1921 | ifla_policy) >= 0) { | |
1922 | if (tb[IFLA_EXT_MASK]) | |
1923 | ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]); | |
1924 | } | |
115c9b81 GR |
1925 | |
1926 | if (!ext_filter_mask) | |
1927 | return NLMSG_GOODSIZE; | |
1928 | /* | |
1929 | * traverse the list of net devices and compute the minimum | |
1930 | * buffer size based upon the filter mask. | |
1931 | */ | |
1932 | list_for_each_entry(dev, &net->dev_base_head, dev_list) { | |
1933 | min_ifinfo_dump_size = max_t(u16, min_ifinfo_dump_size, | |
1934 | if_nlmsg_size(dev, | |
1935 | ext_filter_mask)); | |
1936 | } | |
1937 | ||
c7ac8679 GR |
1938 | return min_ifinfo_dump_size; |
1939 | } | |
1940 | ||
42bad1da | 1941 | static int rtnl_dump_all(struct sk_buff *skb, struct netlink_callback *cb) |
1da177e4 LT |
1942 | { |
1943 | int idx; | |
1944 | int s_idx = cb->family; | |
1945 | ||
1946 | if (s_idx == 0) | |
1947 | s_idx = 1; | |
25239cee | 1948 | for (idx = 1; idx <= RTNL_FAMILY_MAX; idx++) { |
1da177e4 LT |
1949 | int type = cb->nlh->nlmsg_type-RTM_BASE; |
1950 | if (idx < s_idx || idx == PF_PACKET) | |
1951 | continue; | |
e2849863 TG |
1952 | if (rtnl_msg_handlers[idx] == NULL || |
1953 | rtnl_msg_handlers[idx][type].dumpit == NULL) | |
1da177e4 LT |
1954 | continue; |
1955 | if (idx > s_idx) | |
1956 | memset(&cb->args[0], 0, sizeof(cb->args)); | |
e2849863 | 1957 | if (rtnl_msg_handlers[idx][type].dumpit(skb, cb)) |
1da177e4 LT |
1958 | break; |
1959 | } | |
1960 | cb->family = idx; | |
1961 | ||
1962 | return skb->len; | |
1963 | } | |
1964 | ||
95c96174 | 1965 | void rtmsg_ifinfo(int type, struct net_device *dev, unsigned int change) |
1da177e4 | 1966 | { |
c346dca1 | 1967 | struct net *net = dev_net(dev); |
1da177e4 | 1968 | struct sk_buff *skb; |
0ec6d3f4 | 1969 | int err = -ENOBUFS; |
c7ac8679 | 1970 | size_t if_info_size; |
1da177e4 | 1971 | |
115c9b81 | 1972 | skb = nlmsg_new((if_info_size = if_nlmsg_size(dev, 0)), GFP_KERNEL); |
0ec6d3f4 TG |
1973 | if (skb == NULL) |
1974 | goto errout; | |
1da177e4 | 1975 | |
115c9b81 | 1976 | err = rtnl_fill_ifinfo(skb, dev, type, 0, 0, change, 0, 0); |
26932566 PM |
1977 | if (err < 0) { |
1978 | /* -EMSGSIZE implies BUG in if_nlmsg_size() */ | |
1979 | WARN_ON(err == -EMSGSIZE); | |
1980 | kfree_skb(skb); | |
1981 | goto errout; | |
1982 | } | |
1ce85fe4 PNA |
1983 | rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_KERNEL); |
1984 | return; | |
0ec6d3f4 TG |
1985 | errout: |
1986 | if (err < 0) | |
4b3da706 | 1987 | rtnl_set_sk_err(net, RTNLGRP_LINK, err); |
1da177e4 LT |
1988 | } |
1989 | ||
d83b0603 JF |
1990 | static int nlmsg_populate_fdb_fill(struct sk_buff *skb, |
1991 | struct net_device *dev, | |
1992 | u8 *addr, u32 pid, u32 seq, | |
1993 | int type, unsigned int flags) | |
1994 | { | |
1995 | struct nlmsghdr *nlh; | |
1996 | struct ndmsg *ndm; | |
1997 | ||
1998 | nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ndm), NLM_F_MULTI); | |
1999 | if (!nlh) | |
2000 | return -EMSGSIZE; | |
2001 | ||
2002 | ndm = nlmsg_data(nlh); | |
2003 | ndm->ndm_family = AF_BRIDGE; | |
2004 | ndm->ndm_pad1 = 0; | |
2005 | ndm->ndm_pad2 = 0; | |
2006 | ndm->ndm_flags = flags; | |
2007 | ndm->ndm_type = 0; | |
2008 | ndm->ndm_ifindex = dev->ifindex; | |
2009 | ndm->ndm_state = NUD_PERMANENT; | |
2010 | ||
2011 | if (nla_put(skb, NDA_LLADDR, ETH_ALEN, addr)) | |
2012 | goto nla_put_failure; | |
2013 | ||
2014 | return nlmsg_end(skb, nlh); | |
2015 | ||
2016 | nla_put_failure: | |
2017 | nlmsg_cancel(skb, nlh); | |
2018 | return -EMSGSIZE; | |
2019 | } | |
2020 | ||
3ff661c3 JF |
2021 | static inline size_t rtnl_fdb_nlmsg_size(void) |
2022 | { | |
2023 | return NLMSG_ALIGN(sizeof(struct ndmsg)) + nla_total_size(ETH_ALEN); | |
2024 | } | |
2025 | ||
2026 | static void rtnl_fdb_notify(struct net_device *dev, u8 *addr, int type) | |
2027 | { | |
2028 | struct net *net = dev_net(dev); | |
2029 | struct sk_buff *skb; | |
2030 | int err = -ENOBUFS; | |
2031 | ||
2032 | skb = nlmsg_new(rtnl_fdb_nlmsg_size(), GFP_ATOMIC); | |
2033 | if (!skb) | |
2034 | goto errout; | |
2035 | ||
2036 | err = nlmsg_populate_fdb_fill(skb, dev, addr, 0, 0, type, NTF_SELF); | |
2037 | if (err < 0) { | |
2038 | kfree_skb(skb); | |
2039 | goto errout; | |
2040 | } | |
2041 | ||
2042 | rtnl_notify(skb, net, 0, RTNLGRP_NEIGH, NULL, GFP_ATOMIC); | |
2043 | return; | |
2044 | errout: | |
2045 | rtnl_set_sk_err(net, RTNLGRP_NEIGH, err); | |
2046 | } | |
2047 | ||
77162022 JF |
2048 | static int rtnl_fdb_add(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) |
2049 | { | |
2050 | struct net *net = sock_net(skb->sk); | |
2051 | struct net_device *master = NULL; | |
2052 | struct ndmsg *ndm; | |
2053 | struct nlattr *tb[NDA_MAX+1]; | |
2054 | struct net_device *dev; | |
2055 | u8 *addr; | |
2056 | int err; | |
2057 | ||
dfc47ef8 EB |
2058 | if (!capable(CAP_NET_ADMIN)) |
2059 | return -EPERM; | |
2060 | ||
77162022 JF |
2061 | err = nlmsg_parse(nlh, sizeof(*ndm), tb, NDA_MAX, NULL); |
2062 | if (err < 0) | |
2063 | return err; | |
2064 | ||
2065 | ndm = nlmsg_data(nlh); | |
2066 | if (ndm->ndm_ifindex == 0) { | |
2067 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid ifindex\n"); | |
2068 | return -EINVAL; | |
2069 | } | |
2070 | ||
2071 | dev = __dev_get_by_index(net, ndm->ndm_ifindex); | |
2072 | if (dev == NULL) { | |
2073 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with unknown ifindex\n"); | |
2074 | return -ENODEV; | |
2075 | } | |
2076 | ||
2077 | if (!tb[NDA_LLADDR] || nla_len(tb[NDA_LLADDR]) != ETH_ALEN) { | |
2078 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid address\n"); | |
2079 | return -EINVAL; | |
2080 | } | |
2081 | ||
2082 | addr = nla_data(tb[NDA_LLADDR]); | |
2083 | if (!is_valid_ether_addr(addr)) { | |
2084 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid ether address\n"); | |
2085 | return -EINVAL; | |
2086 | } | |
2087 | ||
2088 | err = -EOPNOTSUPP; | |
2089 | ||
2090 | /* Support fdb on master device the net/bridge default case */ | |
2091 | if ((!ndm->ndm_flags || ndm->ndm_flags & NTF_MASTER) && | |
2092 | (dev->priv_flags & IFF_BRIDGE_PORT)) { | |
2093 | master = dev->master; | |
edc7d573 | 2094 | err = master->netdev_ops->ndo_fdb_add(ndm, tb, |
2095 | dev, addr, | |
77162022 JF |
2096 | nlh->nlmsg_flags); |
2097 | if (err) | |
2098 | goto out; | |
2099 | else | |
2100 | ndm->ndm_flags &= ~NTF_MASTER; | |
2101 | } | |
2102 | ||
2103 | /* Embedded bridge, macvlan, and any other device support */ | |
2104 | if ((ndm->ndm_flags & NTF_SELF) && dev->netdev_ops->ndo_fdb_add) { | |
edc7d573 | 2105 | err = dev->netdev_ops->ndo_fdb_add(ndm, tb, |
2106 | dev, addr, | |
77162022 JF |
2107 | nlh->nlmsg_flags); |
2108 | ||
3ff661c3 JF |
2109 | if (!err) { |
2110 | rtnl_fdb_notify(dev, addr, RTM_NEWNEIGH); | |
77162022 | 2111 | ndm->ndm_flags &= ~NTF_SELF; |
3ff661c3 | 2112 | } |
77162022 JF |
2113 | } |
2114 | out: | |
2115 | return err; | |
2116 | } | |
2117 | ||
2118 | static int rtnl_fdb_del(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) | |
2119 | { | |
2120 | struct net *net = sock_net(skb->sk); | |
2121 | struct ndmsg *ndm; | |
2122 | struct nlattr *llattr; | |
2123 | struct net_device *dev; | |
2124 | int err = -EINVAL; | |
2125 | __u8 *addr; | |
2126 | ||
dfc47ef8 EB |
2127 | if (!capable(CAP_NET_ADMIN)) |
2128 | return -EPERM; | |
2129 | ||
77162022 JF |
2130 | if (nlmsg_len(nlh) < sizeof(*ndm)) |
2131 | return -EINVAL; | |
2132 | ||
2133 | ndm = nlmsg_data(nlh); | |
2134 | if (ndm->ndm_ifindex == 0) { | |
2135 | pr_info("PF_BRIDGE: RTM_DELNEIGH with invalid ifindex\n"); | |
2136 | return -EINVAL; | |
2137 | } | |
2138 | ||
2139 | dev = __dev_get_by_index(net, ndm->ndm_ifindex); | |
2140 | if (dev == NULL) { | |
2141 | pr_info("PF_BRIDGE: RTM_DELNEIGH with unknown ifindex\n"); | |
2142 | return -ENODEV; | |
2143 | } | |
2144 | ||
2145 | llattr = nlmsg_find_attr(nlh, sizeof(*ndm), NDA_LLADDR); | |
2146 | if (llattr == NULL || nla_len(llattr) != ETH_ALEN) { | |
2147 | pr_info("PF_BRIGDE: RTM_DELNEIGH with invalid address\n"); | |
2148 | return -EINVAL; | |
2149 | } | |
2150 | ||
2151 | addr = nla_data(llattr); | |
2152 | err = -EOPNOTSUPP; | |
2153 | ||
2154 | /* Support fdb on master device the net/bridge default case */ | |
2155 | if ((!ndm->ndm_flags || ndm->ndm_flags & NTF_MASTER) && | |
2156 | (dev->priv_flags & IFF_BRIDGE_PORT)) { | |
2157 | struct net_device *master = dev->master; | |
2158 | ||
2159 | if (master->netdev_ops->ndo_fdb_del) | |
2160 | err = master->netdev_ops->ndo_fdb_del(ndm, dev, addr); | |
2161 | ||
2162 | if (err) | |
2163 | goto out; | |
2164 | else | |
2165 | ndm->ndm_flags &= ~NTF_MASTER; | |
2166 | } | |
2167 | ||
2168 | /* Embedded bridge, macvlan, and any other device support */ | |
2169 | if ((ndm->ndm_flags & NTF_SELF) && dev->netdev_ops->ndo_fdb_del) { | |
2170 | err = dev->netdev_ops->ndo_fdb_del(ndm, dev, addr); | |
2171 | ||
3ff661c3 JF |
2172 | if (!err) { |
2173 | rtnl_fdb_notify(dev, addr, RTM_DELNEIGH); | |
77162022 | 2174 | ndm->ndm_flags &= ~NTF_SELF; |
3ff661c3 | 2175 | } |
77162022 JF |
2176 | } |
2177 | out: | |
2178 | return err; | |
2179 | } | |
2180 | ||
d83b0603 JF |
2181 | static int nlmsg_populate_fdb(struct sk_buff *skb, |
2182 | struct netlink_callback *cb, | |
2183 | struct net_device *dev, | |
2184 | int *idx, | |
2185 | struct netdev_hw_addr_list *list) | |
2186 | { | |
2187 | struct netdev_hw_addr *ha; | |
2188 | int err; | |
15e47304 | 2189 | u32 portid, seq; |
d83b0603 | 2190 | |
15e47304 | 2191 | portid = NETLINK_CB(cb->skb).portid; |
d83b0603 JF |
2192 | seq = cb->nlh->nlmsg_seq; |
2193 | ||
2194 | list_for_each_entry(ha, &list->list, list) { | |
2195 | if (*idx < cb->args[0]) | |
2196 | goto skip; | |
2197 | ||
2198 | err = nlmsg_populate_fdb_fill(skb, dev, ha->addr, | |
a7a558fe JF |
2199 | portid, seq, |
2200 | RTM_NEWNEIGH, NTF_SELF); | |
d83b0603 JF |
2201 | if (err < 0) |
2202 | return err; | |
2203 | skip: | |
2204 | *idx += 1; | |
2205 | } | |
2206 | return 0; | |
2207 | } | |
2208 | ||
2209 | /** | |
2c53040f | 2210 | * ndo_dflt_fdb_dump - default netdevice operation to dump an FDB table. |
d83b0603 JF |
2211 | * @nlh: netlink message header |
2212 | * @dev: netdevice | |
2213 | * | |
2214 | * Default netdevice operation to dump the existing unicast address list. | |
2215 | * Returns zero on success. | |
2216 | */ | |
2217 | int ndo_dflt_fdb_dump(struct sk_buff *skb, | |
2218 | struct netlink_callback *cb, | |
2219 | struct net_device *dev, | |
2220 | int idx) | |
2221 | { | |
2222 | int err; | |
2223 | ||
2224 | netif_addr_lock_bh(dev); | |
2225 | err = nlmsg_populate_fdb(skb, cb, dev, &idx, &dev->uc); | |
2226 | if (err) | |
2227 | goto out; | |
2228 | nlmsg_populate_fdb(skb, cb, dev, &idx, &dev->mc); | |
2229 | out: | |
2230 | netif_addr_unlock_bh(dev); | |
2231 | return idx; | |
2232 | } | |
2233 | EXPORT_SYMBOL(ndo_dflt_fdb_dump); | |
2234 | ||
77162022 JF |
2235 | static int rtnl_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb) |
2236 | { | |
2237 | int idx = 0; | |
2238 | struct net *net = sock_net(skb->sk); | |
2239 | struct net_device *dev; | |
2240 | ||
2241 | rcu_read_lock(); | |
2242 | for_each_netdev_rcu(net, dev) { | |
2243 | if (dev->priv_flags & IFF_BRIDGE_PORT) { | |
2244 | struct net_device *master = dev->master; | |
2245 | const struct net_device_ops *ops = master->netdev_ops; | |
2246 | ||
2247 | if (ops->ndo_fdb_dump) | |
2248 | idx = ops->ndo_fdb_dump(skb, cb, dev, idx); | |
2249 | } | |
2250 | ||
2251 | if (dev->netdev_ops->ndo_fdb_dump) | |
2252 | idx = dev->netdev_ops->ndo_fdb_dump(skb, cb, dev, idx); | |
2253 | } | |
2254 | rcu_read_unlock(); | |
2255 | ||
2256 | cb->args[0] = idx; | |
2257 | return skb->len; | |
2258 | } | |
2259 | ||
815cccbf JF |
2260 | int ndo_dflt_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq, |
2261 | struct net_device *dev, u16 mode) | |
2262 | { | |
2263 | struct nlmsghdr *nlh; | |
2264 | struct ifinfomsg *ifm; | |
2265 | struct nlattr *br_afspec; | |
2266 | u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN; | |
2267 | ||
2268 | nlh = nlmsg_put(skb, pid, seq, RTM_NEWLINK, sizeof(*ifm), NLM_F_MULTI); | |
2269 | if (nlh == NULL) | |
2270 | return -EMSGSIZE; | |
2271 | ||
2272 | ifm = nlmsg_data(nlh); | |
2273 | ifm->ifi_family = AF_BRIDGE; | |
2274 | ifm->__ifi_pad = 0; | |
2275 | ifm->ifi_type = dev->type; | |
2276 | ifm->ifi_index = dev->ifindex; | |
2277 | ifm->ifi_flags = dev_get_flags(dev); | |
2278 | ifm->ifi_change = 0; | |
2279 | ||
2280 | ||
2281 | if (nla_put_string(skb, IFLA_IFNAME, dev->name) || | |
2282 | nla_put_u32(skb, IFLA_MTU, dev->mtu) || | |
2283 | nla_put_u8(skb, IFLA_OPERSTATE, operstate) || | |
2284 | (dev->master && | |
2285 | nla_put_u32(skb, IFLA_MASTER, dev->master->ifindex)) || | |
2286 | (dev->addr_len && | |
2287 | nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) || | |
2288 | (dev->ifindex != dev->iflink && | |
2289 | nla_put_u32(skb, IFLA_LINK, dev->iflink))) | |
2290 | goto nla_put_failure; | |
2291 | ||
2292 | br_afspec = nla_nest_start(skb, IFLA_AF_SPEC); | |
2293 | if (!br_afspec) | |
2294 | goto nla_put_failure; | |
2295 | ||
2296 | if (nla_put_u16(skb, IFLA_BRIDGE_FLAGS, BRIDGE_FLAGS_SELF) || | |
2297 | nla_put_u16(skb, IFLA_BRIDGE_MODE, mode)) { | |
2298 | nla_nest_cancel(skb, br_afspec); | |
2299 | goto nla_put_failure; | |
2300 | } | |
2301 | nla_nest_end(skb, br_afspec); | |
2302 | ||
2303 | return nlmsg_end(skb, nlh); | |
2304 | nla_put_failure: | |
2305 | nlmsg_cancel(skb, nlh); | |
2306 | return -EMSGSIZE; | |
2307 | } | |
2308 | EXPORT_SYMBOL(ndo_dflt_bridge_getlink); | |
2309 | ||
e5a55a89 JF |
2310 | static int rtnl_bridge_getlink(struct sk_buff *skb, struct netlink_callback *cb) |
2311 | { | |
2312 | struct net *net = sock_net(skb->sk); | |
2313 | struct net_device *dev; | |
2314 | int idx = 0; | |
2315 | u32 portid = NETLINK_CB(cb->skb).portid; | |
2316 | u32 seq = cb->nlh->nlmsg_seq; | |
2317 | ||
2318 | rcu_read_lock(); | |
2319 | for_each_netdev_rcu(net, dev) { | |
2320 | const struct net_device_ops *ops = dev->netdev_ops; | |
2321 | struct net_device *master = dev->master; | |
2322 | ||
e5a55a89 | 2323 | if (master && master->netdev_ops->ndo_bridge_getlink) { |
25b1e679 BH |
2324 | if (idx >= cb->args[0] && |
2325 | master->netdev_ops->ndo_bridge_getlink( | |
2326 | skb, portid, seq, dev) < 0) | |
e5a55a89 | 2327 | break; |
25b1e679 | 2328 | idx++; |
e5a55a89 JF |
2329 | } |
2330 | ||
2331 | if (ops->ndo_bridge_getlink) { | |
25b1e679 BH |
2332 | if (idx >= cb->args[0] && |
2333 | ops->ndo_bridge_getlink(skb, portid, seq, dev) < 0) | |
e5a55a89 | 2334 | break; |
25b1e679 | 2335 | idx++; |
e5a55a89 JF |
2336 | } |
2337 | } | |
2338 | rcu_read_unlock(); | |
2339 | cb->args[0] = idx; | |
2340 | ||
2341 | return skb->len; | |
2342 | } | |
2343 | ||
2469ffd7 JF |
2344 | static inline size_t bridge_nlmsg_size(void) |
2345 | { | |
2346 | return NLMSG_ALIGN(sizeof(struct ifinfomsg)) | |
2347 | + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */ | |
2348 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */ | |
2349 | + nla_total_size(sizeof(u32)) /* IFLA_MASTER */ | |
2350 | + nla_total_size(sizeof(u32)) /* IFLA_MTU */ | |
2351 | + nla_total_size(sizeof(u32)) /* IFLA_LINK */ | |
2352 | + nla_total_size(sizeof(u32)) /* IFLA_OPERSTATE */ | |
2353 | + nla_total_size(sizeof(u8)) /* IFLA_PROTINFO */ | |
2354 | + nla_total_size(sizeof(struct nlattr)) /* IFLA_AF_SPEC */ | |
2355 | + nla_total_size(sizeof(u16)) /* IFLA_BRIDGE_FLAGS */ | |
2356 | + nla_total_size(sizeof(u16)); /* IFLA_BRIDGE_MODE */ | |
2357 | } | |
2358 | ||
2359 | static int rtnl_bridge_notify(struct net_device *dev, u16 flags) | |
2360 | { | |
2361 | struct net *net = dev_net(dev); | |
2362 | struct net_device *master = dev->master; | |
2363 | struct sk_buff *skb; | |
2364 | int err = -EOPNOTSUPP; | |
2365 | ||
2366 | skb = nlmsg_new(bridge_nlmsg_size(), GFP_ATOMIC); | |
2367 | if (!skb) { | |
2368 | err = -ENOMEM; | |
2369 | goto errout; | |
2370 | } | |
2371 | ||
c38e01b8 JF |
2372 | if ((!flags || (flags & BRIDGE_FLAGS_MASTER)) && |
2373 | master && master->netdev_ops->ndo_bridge_getlink) { | |
2469ffd7 | 2374 | err = master->netdev_ops->ndo_bridge_getlink(skb, 0, 0, dev); |
c38e01b8 JF |
2375 | if (err < 0) |
2376 | goto errout; | |
2377 | } | |
2469ffd7 | 2378 | |
c38e01b8 JF |
2379 | if ((flags & BRIDGE_FLAGS_SELF) && |
2380 | dev->netdev_ops->ndo_bridge_getlink) { | |
2381 | err = dev->netdev_ops->ndo_bridge_getlink(skb, 0, 0, dev); | |
2382 | if (err < 0) | |
2383 | goto errout; | |
2384 | } | |
2469ffd7 JF |
2385 | |
2386 | rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC); | |
2387 | return 0; | |
2388 | errout: | |
2389 | WARN_ON(err == -EMSGSIZE); | |
2390 | kfree_skb(skb); | |
2391 | rtnl_set_sk_err(net, RTNLGRP_LINK, err); | |
2392 | return err; | |
2393 | } | |
2394 | ||
e5a55a89 JF |
2395 | static int rtnl_bridge_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, |
2396 | void *arg) | |
2397 | { | |
2398 | struct net *net = sock_net(skb->sk); | |
2399 | struct ifinfomsg *ifm; | |
2400 | struct net_device *dev; | |
2469ffd7 JF |
2401 | struct nlattr *br_spec, *attr = NULL; |
2402 | int rem, err = -EOPNOTSUPP; | |
c38e01b8 JF |
2403 | u16 oflags, flags = 0; |
2404 | bool have_flags = false; | |
e5a55a89 JF |
2405 | |
2406 | if (nlmsg_len(nlh) < sizeof(*ifm)) | |
2407 | return -EINVAL; | |
2408 | ||
2409 | ifm = nlmsg_data(nlh); | |
2410 | if (ifm->ifi_family != AF_BRIDGE) | |
2411 | return -EPFNOSUPPORT; | |
2412 | ||
2413 | dev = __dev_get_by_index(net, ifm->ifi_index); | |
2414 | if (!dev) { | |
2415 | pr_info("PF_BRIDGE: RTM_SETLINK with unknown ifindex\n"); | |
2416 | return -ENODEV; | |
2417 | } | |
2418 | ||
2469ffd7 JF |
2419 | br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); |
2420 | if (br_spec) { | |
2421 | nla_for_each_nested(attr, br_spec, rem) { | |
2422 | if (nla_type(attr) == IFLA_BRIDGE_FLAGS) { | |
c38e01b8 | 2423 | have_flags = true; |
2469ffd7 JF |
2424 | flags = nla_get_u16(attr); |
2425 | break; | |
2426 | } | |
2427 | } | |
2428 | } | |
2429 | ||
c38e01b8 JF |
2430 | oflags = flags; |
2431 | ||
2469ffd7 JF |
2432 | if (!flags || (flags & BRIDGE_FLAGS_MASTER)) { |
2433 | if (!dev->master || | |
2434 | !dev->master->netdev_ops->ndo_bridge_setlink) { | |
2435 | err = -EOPNOTSUPP; | |
2436 | goto out; | |
2437 | } | |
2438 | ||
e5a55a89 JF |
2439 | err = dev->master->netdev_ops->ndo_bridge_setlink(dev, nlh); |
2440 | if (err) | |
2441 | goto out; | |
2469ffd7 JF |
2442 | |
2443 | flags &= ~BRIDGE_FLAGS_MASTER; | |
e5a55a89 JF |
2444 | } |
2445 | ||
2469ffd7 JF |
2446 | if ((flags & BRIDGE_FLAGS_SELF)) { |
2447 | if (!dev->netdev_ops->ndo_bridge_setlink) | |
2448 | err = -EOPNOTSUPP; | |
2449 | else | |
2450 | err = dev->netdev_ops->ndo_bridge_setlink(dev, nlh); | |
2451 | ||
2452 | if (!err) | |
2453 | flags &= ~BRIDGE_FLAGS_SELF; | |
2454 | } | |
e5a55a89 | 2455 | |
c38e01b8 | 2456 | if (have_flags) |
2469ffd7 JF |
2457 | memcpy(nla_data(attr), &flags, sizeof(flags)); |
2458 | /* Generate event to notify upper layer of bridge change */ | |
2459 | if (!err) | |
c38e01b8 | 2460 | err = rtnl_bridge_notify(dev, oflags); |
e5a55a89 JF |
2461 | out: |
2462 | return err; | |
2463 | } | |
2464 | ||
1da177e4 LT |
2465 | /* Protected by RTNL sempahore. */ |
2466 | static struct rtattr **rta_buf; | |
2467 | static int rtattr_max; | |
2468 | ||
2469 | /* Process one rtnetlink message. */ | |
2470 | ||
1d00a4eb | 2471 | static int rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh) |
1da177e4 | 2472 | { |
3b1e0a65 | 2473 | struct net *net = sock_net(skb->sk); |
e2849863 | 2474 | rtnl_doit_func doit; |
1da177e4 LT |
2475 | int sz_idx, kind; |
2476 | int min_len; | |
2477 | int family; | |
2478 | int type; | |
2907c35f | 2479 | int err; |
1da177e4 | 2480 | |
1da177e4 | 2481 | type = nlh->nlmsg_type; |
1da177e4 | 2482 | if (type > RTM_MAX) |
038890fe | 2483 | return -EOPNOTSUPP; |
1da177e4 LT |
2484 | |
2485 | type -= RTM_BASE; | |
2486 | ||
2487 | /* All the messages must have at least 1 byte length */ | |
2488 | if (nlh->nlmsg_len < NLMSG_LENGTH(sizeof(struct rtgenmsg))) | |
2489 | return 0; | |
2490 | ||
e0d087af | 2491 | family = ((struct rtgenmsg *)NLMSG_DATA(nlh))->rtgen_family; |
1da177e4 LT |
2492 | sz_idx = type>>2; |
2493 | kind = type&3; | |
2494 | ||
dfc47ef8 | 2495 | if (kind != 2 && !ns_capable(net->user_ns, CAP_NET_ADMIN)) |
1d00a4eb | 2496 | return -EPERM; |
1da177e4 | 2497 | |
b8f3ab42 | 2498 | if (kind == 2 && nlh->nlmsg_flags&NLM_F_DUMP) { |
97c53cac | 2499 | struct sock *rtnl; |
e2849863 | 2500 | rtnl_dumpit_func dumpit; |
c7ac8679 GR |
2501 | rtnl_calcit_func calcit; |
2502 | u16 min_dump_alloc = 0; | |
1da177e4 | 2503 | |
e2849863 TG |
2504 | dumpit = rtnl_get_dumpit(family, type); |
2505 | if (dumpit == NULL) | |
038890fe | 2506 | return -EOPNOTSUPP; |
c7ac8679 GR |
2507 | calcit = rtnl_get_calcit(family, type); |
2508 | if (calcit) | |
115c9b81 | 2509 | min_dump_alloc = calcit(skb, nlh); |
9ac4a169 | 2510 | |
2907c35f | 2511 | __rtnl_unlock(); |
97c53cac | 2512 | rtnl = net->rtnl; |
80d326fa PNA |
2513 | { |
2514 | struct netlink_dump_control c = { | |
2515 | .dump = dumpit, | |
2516 | .min_dump_alloc = min_dump_alloc, | |
2517 | }; | |
2518 | err = netlink_dump_start(rtnl, skb, nlh, &c); | |
2519 | } | |
2907c35f ED |
2520 | rtnl_lock(); |
2521 | return err; | |
1da177e4 LT |
2522 | } |
2523 | ||
2524 | memset(rta_buf, 0, (rtattr_max * sizeof(struct rtattr *))); | |
2525 | ||
2526 | min_len = rtm_min[sz_idx]; | |
2527 | if (nlh->nlmsg_len < min_len) | |
1d00a4eb | 2528 | return -EINVAL; |
1da177e4 LT |
2529 | |
2530 | if (nlh->nlmsg_len > min_len) { | |
2531 | int attrlen = nlh->nlmsg_len - NLMSG_ALIGN(min_len); | |
e0d087af | 2532 | struct rtattr *attr = (void *)nlh + NLMSG_ALIGN(min_len); |
1da177e4 LT |
2533 | |
2534 | while (RTA_OK(attr, attrlen)) { | |
95c96174 | 2535 | unsigned int flavor = attr->rta_type; |
1da177e4 LT |
2536 | if (flavor) { |
2537 | if (flavor > rta_max[sz_idx]) | |
1d00a4eb | 2538 | return -EINVAL; |
1da177e4 LT |
2539 | rta_buf[flavor-1] = attr; |
2540 | } | |
2541 | attr = RTA_NEXT(attr, attrlen); | |
2542 | } | |
2543 | } | |
2544 | ||
e2849863 TG |
2545 | doit = rtnl_get_doit(family, type); |
2546 | if (doit == NULL) | |
038890fe | 2547 | return -EOPNOTSUPP; |
1da177e4 | 2548 | |
1d00a4eb | 2549 | return doit(skb, nlh, (void *)&rta_buf[0]); |
1da177e4 LT |
2550 | } |
2551 | ||
cd40b7d3 | 2552 | static void rtnetlink_rcv(struct sk_buff *skb) |
1da177e4 | 2553 | { |
cd40b7d3 DL |
2554 | rtnl_lock(); |
2555 | netlink_rcv_skb(skb, &rtnetlink_rcv_msg); | |
2556 | rtnl_unlock(); | |
1da177e4 LT |
2557 | } |
2558 | ||
1da177e4 LT |
2559 | static int rtnetlink_event(struct notifier_block *this, unsigned long event, void *ptr) |
2560 | { | |
2561 | struct net_device *dev = ptr; | |
e9dc8653 | 2562 | |
1da177e4 | 2563 | switch (event) { |
1da177e4 LT |
2564 | case NETDEV_UP: |
2565 | case NETDEV_DOWN: | |
10de05af | 2566 | case NETDEV_PRE_UP: |
d90a909e EB |
2567 | case NETDEV_POST_INIT: |
2568 | case NETDEV_REGISTER: | |
1da177e4 | 2569 | case NETDEV_CHANGE: |
755d0e77 | 2570 | case NETDEV_PRE_TYPE_CHANGE: |
1da177e4 | 2571 | case NETDEV_GOING_DOWN: |
a2835763 | 2572 | case NETDEV_UNREGISTER: |
0115e8e3 | 2573 | case NETDEV_UNREGISTER_FINAL: |
ac3d3f81 AW |
2574 | case NETDEV_RELEASE: |
2575 | case NETDEV_JOIN: | |
1da177e4 LT |
2576 | break; |
2577 | default: | |
2578 | rtmsg_ifinfo(RTM_NEWLINK, dev, 0); | |
2579 | break; | |
2580 | } | |
2581 | return NOTIFY_DONE; | |
2582 | } | |
2583 | ||
2584 | static struct notifier_block rtnetlink_dev_notifier = { | |
2585 | .notifier_call = rtnetlink_event, | |
2586 | }; | |
2587 | ||
97c53cac | 2588 | |
2c8c1e72 | 2589 | static int __net_init rtnetlink_net_init(struct net *net) |
97c53cac DL |
2590 | { |
2591 | struct sock *sk; | |
a31f2d17 PNA |
2592 | struct netlink_kernel_cfg cfg = { |
2593 | .groups = RTNLGRP_MAX, | |
2594 | .input = rtnetlink_rcv, | |
2595 | .cb_mutex = &rtnl_mutex, | |
9785e10a | 2596 | .flags = NL_CFG_F_NONROOT_RECV, |
a31f2d17 PNA |
2597 | }; |
2598 | ||
9f00d977 | 2599 | sk = netlink_kernel_create(net, NETLINK_ROUTE, &cfg); |
97c53cac DL |
2600 | if (!sk) |
2601 | return -ENOMEM; | |
97c53cac DL |
2602 | net->rtnl = sk; |
2603 | return 0; | |
2604 | } | |
2605 | ||
2c8c1e72 | 2606 | static void __net_exit rtnetlink_net_exit(struct net *net) |
97c53cac | 2607 | { |
775516bf DL |
2608 | netlink_kernel_release(net->rtnl); |
2609 | net->rtnl = NULL; | |
97c53cac DL |
2610 | } |
2611 | ||
2612 | static struct pernet_operations rtnetlink_net_ops = { | |
2613 | .init = rtnetlink_net_init, | |
2614 | .exit = rtnetlink_net_exit, | |
2615 | }; | |
2616 | ||
1da177e4 LT |
2617 | void __init rtnetlink_init(void) |
2618 | { | |
2619 | int i; | |
2620 | ||
2621 | rtattr_max = 0; | |
2622 | for (i = 0; i < ARRAY_SIZE(rta_max); i++) | |
2623 | if (rta_max[i] > rtattr_max) | |
2624 | rtattr_max = rta_max[i]; | |
2625 | rta_buf = kmalloc(rtattr_max * sizeof(struct rtattr *), GFP_KERNEL); | |
2626 | if (!rta_buf) | |
2627 | panic("rtnetlink_init: cannot allocate rta_buf\n"); | |
2628 | ||
97c53cac | 2629 | if (register_pernet_subsys(&rtnetlink_net_ops)) |
1da177e4 | 2630 | panic("rtnetlink_init: cannot initialize rtnetlink\n"); |
97c53cac | 2631 | |
1da177e4 | 2632 | register_netdevice_notifier(&rtnetlink_dev_notifier); |
340d17fc | 2633 | |
c7ac8679 GR |
2634 | rtnl_register(PF_UNSPEC, RTM_GETLINK, rtnl_getlink, |
2635 | rtnl_dump_ifinfo, rtnl_calcit); | |
2636 | rtnl_register(PF_UNSPEC, RTM_SETLINK, rtnl_setlink, NULL, NULL); | |
2637 | rtnl_register(PF_UNSPEC, RTM_NEWLINK, rtnl_newlink, NULL, NULL); | |
2638 | rtnl_register(PF_UNSPEC, RTM_DELLINK, rtnl_dellink, NULL, NULL); | |
687ad8cc | 2639 | |
c7ac8679 GR |
2640 | rtnl_register(PF_UNSPEC, RTM_GETADDR, NULL, rtnl_dump_all, NULL); |
2641 | rtnl_register(PF_UNSPEC, RTM_GETROUTE, NULL, rtnl_dump_all, NULL); | |
77162022 JF |
2642 | |
2643 | rtnl_register(PF_BRIDGE, RTM_NEWNEIGH, rtnl_fdb_add, NULL, NULL); | |
2644 | rtnl_register(PF_BRIDGE, RTM_DELNEIGH, rtnl_fdb_del, NULL, NULL); | |
2645 | rtnl_register(PF_BRIDGE, RTM_GETNEIGH, NULL, rtnl_fdb_dump, NULL); | |
e5a55a89 JF |
2646 | |
2647 | rtnl_register(PF_BRIDGE, RTM_GETLINK, NULL, rtnl_bridge_getlink, NULL); | |
2648 | rtnl_register(PF_BRIDGE, RTM_SETLINK, rtnl_bridge_setlink, NULL, NULL); | |
1da177e4 LT |
2649 | } |
2650 |