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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> |
f6f6424b | 39 | #include <linux/if_vlan.h> |
ebc08a6f | 40 | #include <linux/pci.h> |
77162022 | 41 | #include <linux/etherdevice.h> |
1da177e4 LT |
42 | |
43 | #include <asm/uaccess.h> | |
1da177e4 LT |
44 | |
45 | #include <linux/inet.h> | |
46 | #include <linux/netdevice.h> | |
82f28412 | 47 | #include <net/switchdev.h> |
1da177e4 LT |
48 | #include <net/ip.h> |
49 | #include <net/protocol.h> | |
50 | #include <net/arp.h> | |
51 | #include <net/route.h> | |
52 | #include <net/udp.h> | |
ea697639 | 53 | #include <net/tcp.h> |
1da177e4 LT |
54 | #include <net/sock.h> |
55 | #include <net/pkt_sched.h> | |
14c0b97d | 56 | #include <net/fib_rules.h> |
e2849863 | 57 | #include <net/rtnetlink.h> |
30ffee84 | 58 | #include <net/net_namespace.h> |
1da177e4 | 59 | |
e0d087af | 60 | struct rtnl_link { |
e2849863 TG |
61 | rtnl_doit_func doit; |
62 | rtnl_dumpit_func dumpit; | |
c7ac8679 | 63 | rtnl_calcit_func calcit; |
e2849863 TG |
64 | }; |
65 | ||
6756ae4b | 66 | static DEFINE_MUTEX(rtnl_mutex); |
1da177e4 LT |
67 | |
68 | void rtnl_lock(void) | |
69 | { | |
6756ae4b | 70 | mutex_lock(&rtnl_mutex); |
1da177e4 | 71 | } |
e0d087af | 72 | EXPORT_SYMBOL(rtnl_lock); |
1da177e4 | 73 | |
6756ae4b | 74 | void __rtnl_unlock(void) |
1da177e4 | 75 | { |
6756ae4b | 76 | mutex_unlock(&rtnl_mutex); |
1da177e4 | 77 | } |
6756ae4b | 78 | |
1da177e4 LT |
79 | void rtnl_unlock(void) |
80 | { | |
58ec3b4d | 81 | /* This fellow will unlock it for us. */ |
1da177e4 LT |
82 | netdev_run_todo(); |
83 | } | |
e0d087af | 84 | EXPORT_SYMBOL(rtnl_unlock); |
1da177e4 | 85 | |
6756ae4b SH |
86 | int rtnl_trylock(void) |
87 | { | |
88 | return mutex_trylock(&rtnl_mutex); | |
89 | } | |
e0d087af | 90 | EXPORT_SYMBOL(rtnl_trylock); |
6756ae4b | 91 | |
c9c1014b PM |
92 | int rtnl_is_locked(void) |
93 | { | |
94 | return mutex_is_locked(&rtnl_mutex); | |
95 | } | |
e0d087af | 96 | EXPORT_SYMBOL(rtnl_is_locked); |
c9c1014b | 97 | |
a898def2 PM |
98 | #ifdef CONFIG_PROVE_LOCKING |
99 | int lockdep_rtnl_is_held(void) | |
100 | { | |
101 | return lockdep_is_held(&rtnl_mutex); | |
102 | } | |
103 | EXPORT_SYMBOL(lockdep_rtnl_is_held); | |
104 | #endif /* #ifdef CONFIG_PROVE_LOCKING */ | |
105 | ||
25239cee | 106 | static struct rtnl_link *rtnl_msg_handlers[RTNL_FAMILY_MAX + 1]; |
e2849863 TG |
107 | |
108 | static inline int rtm_msgindex(int msgtype) | |
109 | { | |
110 | int msgindex = msgtype - RTM_BASE; | |
111 | ||
112 | /* | |
113 | * msgindex < 0 implies someone tried to register a netlink | |
114 | * control code. msgindex >= RTM_NR_MSGTYPES may indicate that | |
115 | * the message type has not been added to linux/rtnetlink.h | |
116 | */ | |
117 | BUG_ON(msgindex < 0 || msgindex >= RTM_NR_MSGTYPES); | |
118 | ||
119 | return msgindex; | |
120 | } | |
121 | ||
122 | static rtnl_doit_func rtnl_get_doit(int protocol, int msgindex) | |
123 | { | |
124 | struct rtnl_link *tab; | |
125 | ||
25239cee | 126 | if (protocol <= RTNL_FAMILY_MAX) |
0f87b1dd PM |
127 | tab = rtnl_msg_handlers[protocol]; |
128 | else | |
129 | tab = NULL; | |
130 | ||
51057f2f | 131 | if (tab == NULL || tab[msgindex].doit == NULL) |
e2849863 TG |
132 | tab = rtnl_msg_handlers[PF_UNSPEC]; |
133 | ||
c80bbeae | 134 | return tab[msgindex].doit; |
e2849863 TG |
135 | } |
136 | ||
137 | static rtnl_dumpit_func rtnl_get_dumpit(int protocol, int msgindex) | |
138 | { | |
139 | struct rtnl_link *tab; | |
140 | ||
25239cee | 141 | if (protocol <= RTNL_FAMILY_MAX) |
0f87b1dd PM |
142 | tab = rtnl_msg_handlers[protocol]; |
143 | else | |
144 | tab = NULL; | |
145 | ||
51057f2f | 146 | if (tab == NULL || tab[msgindex].dumpit == NULL) |
e2849863 TG |
147 | tab = rtnl_msg_handlers[PF_UNSPEC]; |
148 | ||
c80bbeae | 149 | return tab[msgindex].dumpit; |
e2849863 TG |
150 | } |
151 | ||
c7ac8679 GR |
152 | static rtnl_calcit_func rtnl_get_calcit(int protocol, int msgindex) |
153 | { | |
154 | struct rtnl_link *tab; | |
155 | ||
156 | if (protocol <= RTNL_FAMILY_MAX) | |
157 | tab = rtnl_msg_handlers[protocol]; | |
158 | else | |
159 | tab = NULL; | |
160 | ||
161 | if (tab == NULL || tab[msgindex].calcit == NULL) | |
162 | tab = rtnl_msg_handlers[PF_UNSPEC]; | |
163 | ||
c80bbeae | 164 | return tab[msgindex].calcit; |
c7ac8679 GR |
165 | } |
166 | ||
e2849863 TG |
167 | /** |
168 | * __rtnl_register - Register a rtnetlink message type | |
169 | * @protocol: Protocol family or PF_UNSPEC | |
170 | * @msgtype: rtnetlink message type | |
171 | * @doit: Function pointer called for each request message | |
172 | * @dumpit: Function pointer called for each dump request (NLM_F_DUMP) message | |
c7ac8679 | 173 | * @calcit: Function pointer to calc size of dump message |
e2849863 TG |
174 | * |
175 | * Registers the specified function pointers (at least one of them has | |
176 | * to be non-NULL) to be called whenever a request message for the | |
177 | * specified protocol family and message type is received. | |
178 | * | |
179 | * The special protocol family PF_UNSPEC may be used to define fallback | |
180 | * function pointers for the case when no entry for the specific protocol | |
181 | * family exists. | |
182 | * | |
183 | * Returns 0 on success or a negative error code. | |
184 | */ | |
185 | int __rtnl_register(int protocol, int msgtype, | |
c7ac8679 GR |
186 | rtnl_doit_func doit, rtnl_dumpit_func dumpit, |
187 | rtnl_calcit_func calcit) | |
e2849863 TG |
188 | { |
189 | struct rtnl_link *tab; | |
190 | int msgindex; | |
191 | ||
25239cee | 192 | BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX); |
e2849863 TG |
193 | msgindex = rtm_msgindex(msgtype); |
194 | ||
195 | tab = rtnl_msg_handlers[protocol]; | |
196 | if (tab == NULL) { | |
197 | tab = kcalloc(RTM_NR_MSGTYPES, sizeof(*tab), GFP_KERNEL); | |
198 | if (tab == NULL) | |
199 | return -ENOBUFS; | |
200 | ||
201 | rtnl_msg_handlers[protocol] = tab; | |
202 | } | |
203 | ||
204 | if (doit) | |
205 | tab[msgindex].doit = doit; | |
206 | ||
207 | if (dumpit) | |
208 | tab[msgindex].dumpit = dumpit; | |
209 | ||
c7ac8679 GR |
210 | if (calcit) |
211 | tab[msgindex].calcit = calcit; | |
212 | ||
e2849863 TG |
213 | return 0; |
214 | } | |
e2849863 TG |
215 | EXPORT_SYMBOL_GPL(__rtnl_register); |
216 | ||
217 | /** | |
218 | * rtnl_register - Register a rtnetlink message type | |
219 | * | |
220 | * Identical to __rtnl_register() but panics on failure. This is useful | |
221 | * as failure of this function is very unlikely, it can only happen due | |
222 | * to lack of memory when allocating the chain to store all message | |
223 | * handlers for a protocol. Meant for use in init functions where lack | |
25985edc | 224 | * of memory implies no sense in continuing. |
e2849863 TG |
225 | */ |
226 | void rtnl_register(int protocol, int msgtype, | |
c7ac8679 GR |
227 | rtnl_doit_func doit, rtnl_dumpit_func dumpit, |
228 | rtnl_calcit_func calcit) | |
e2849863 | 229 | { |
c7ac8679 | 230 | if (__rtnl_register(protocol, msgtype, doit, dumpit, calcit) < 0) |
e2849863 TG |
231 | panic("Unable to register rtnetlink message handler, " |
232 | "protocol = %d, message type = %d\n", | |
233 | protocol, msgtype); | |
234 | } | |
e2849863 TG |
235 | EXPORT_SYMBOL_GPL(rtnl_register); |
236 | ||
237 | /** | |
238 | * rtnl_unregister - Unregister a rtnetlink message type | |
239 | * @protocol: Protocol family or PF_UNSPEC | |
240 | * @msgtype: rtnetlink message type | |
241 | * | |
242 | * Returns 0 on success or a negative error code. | |
243 | */ | |
244 | int rtnl_unregister(int protocol, int msgtype) | |
245 | { | |
246 | int msgindex; | |
247 | ||
25239cee | 248 | BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX); |
e2849863 TG |
249 | msgindex = rtm_msgindex(msgtype); |
250 | ||
251 | if (rtnl_msg_handlers[protocol] == NULL) | |
252 | return -ENOENT; | |
253 | ||
254 | rtnl_msg_handlers[protocol][msgindex].doit = NULL; | |
255 | rtnl_msg_handlers[protocol][msgindex].dumpit = NULL; | |
256 | ||
257 | return 0; | |
258 | } | |
e2849863 TG |
259 | EXPORT_SYMBOL_GPL(rtnl_unregister); |
260 | ||
261 | /** | |
262 | * rtnl_unregister_all - Unregister all rtnetlink message type of a protocol | |
263 | * @protocol : Protocol family or PF_UNSPEC | |
264 | * | |
265 | * Identical to calling rtnl_unregster() for all registered message types | |
266 | * of a certain protocol family. | |
267 | */ | |
268 | void rtnl_unregister_all(int protocol) | |
269 | { | |
25239cee | 270 | BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX); |
e2849863 TG |
271 | |
272 | kfree(rtnl_msg_handlers[protocol]); | |
273 | rtnl_msg_handlers[protocol] = NULL; | |
274 | } | |
e2849863 | 275 | EXPORT_SYMBOL_GPL(rtnl_unregister_all); |
1da177e4 | 276 | |
38f7b870 PM |
277 | static LIST_HEAD(link_ops); |
278 | ||
c63044f0 ED |
279 | static const struct rtnl_link_ops *rtnl_link_ops_get(const char *kind) |
280 | { | |
281 | const struct rtnl_link_ops *ops; | |
282 | ||
283 | list_for_each_entry(ops, &link_ops, list) { | |
284 | if (!strcmp(ops->kind, kind)) | |
285 | return ops; | |
286 | } | |
287 | return NULL; | |
288 | } | |
289 | ||
38f7b870 PM |
290 | /** |
291 | * __rtnl_link_register - Register rtnl_link_ops with rtnetlink. | |
292 | * @ops: struct rtnl_link_ops * to register | |
293 | * | |
294 | * The caller must hold the rtnl_mutex. This function should be used | |
295 | * by drivers that create devices during module initialization. It | |
296 | * must be called before registering the devices. | |
297 | * | |
298 | * Returns 0 on success or a negative error code. | |
299 | */ | |
300 | int __rtnl_link_register(struct rtnl_link_ops *ops) | |
301 | { | |
c63044f0 ED |
302 | if (rtnl_link_ops_get(ops->kind)) |
303 | return -EEXIST; | |
304 | ||
b0ab2fab JP |
305 | /* The check for setup is here because if ops |
306 | * does not have that filled up, it is not possible | |
307 | * to use the ops for creating device. So do not | |
308 | * fill up dellink as well. That disables rtnl_dellink. | |
309 | */ | |
310 | if (ops->setup && !ops->dellink) | |
23289a37 | 311 | ops->dellink = unregister_netdevice_queue; |
2d85cba2 | 312 | |
38f7b870 PM |
313 | list_add_tail(&ops->list, &link_ops); |
314 | return 0; | |
315 | } | |
38f7b870 PM |
316 | EXPORT_SYMBOL_GPL(__rtnl_link_register); |
317 | ||
318 | /** | |
319 | * rtnl_link_register - Register rtnl_link_ops with rtnetlink. | |
320 | * @ops: struct rtnl_link_ops * to register | |
321 | * | |
322 | * Returns 0 on success or a negative error code. | |
323 | */ | |
324 | int rtnl_link_register(struct rtnl_link_ops *ops) | |
325 | { | |
326 | int err; | |
327 | ||
328 | rtnl_lock(); | |
329 | err = __rtnl_link_register(ops); | |
330 | rtnl_unlock(); | |
331 | return err; | |
332 | } | |
38f7b870 PM |
333 | EXPORT_SYMBOL_GPL(rtnl_link_register); |
334 | ||
669f87ba PE |
335 | static void __rtnl_kill_links(struct net *net, struct rtnl_link_ops *ops) |
336 | { | |
337 | struct net_device *dev; | |
23289a37 ED |
338 | LIST_HEAD(list_kill); |
339 | ||
669f87ba | 340 | for_each_netdev(net, dev) { |
23289a37 ED |
341 | if (dev->rtnl_link_ops == ops) |
342 | ops->dellink(dev, &list_kill); | |
669f87ba | 343 | } |
23289a37 | 344 | unregister_netdevice_many(&list_kill); |
669f87ba PE |
345 | } |
346 | ||
38f7b870 PM |
347 | /** |
348 | * __rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink. | |
349 | * @ops: struct rtnl_link_ops * to unregister | |
350 | * | |
2d85cba2 | 351 | * The caller must hold the rtnl_mutex. |
38f7b870 PM |
352 | */ |
353 | void __rtnl_link_unregister(struct rtnl_link_ops *ops) | |
354 | { | |
881d966b | 355 | struct net *net; |
2d85cba2 | 356 | |
881d966b | 357 | for_each_net(net) { |
669f87ba | 358 | __rtnl_kill_links(net, ops); |
2d85cba2 | 359 | } |
38f7b870 PM |
360 | list_del(&ops->list); |
361 | } | |
38f7b870 PM |
362 | EXPORT_SYMBOL_GPL(__rtnl_link_unregister); |
363 | ||
200b916f CW |
364 | /* Return with the rtnl_lock held when there are no network |
365 | * devices unregistering in any network namespace. | |
366 | */ | |
367 | static void rtnl_lock_unregistering_all(void) | |
368 | { | |
369 | struct net *net; | |
370 | bool unregistering; | |
ff960a73 | 371 | DEFINE_WAIT_FUNC(wait, woken_wake_function); |
200b916f | 372 | |
ff960a73 | 373 | add_wait_queue(&netdev_unregistering_wq, &wait); |
200b916f | 374 | for (;;) { |
200b916f CW |
375 | unregistering = false; |
376 | rtnl_lock(); | |
377 | for_each_net(net) { | |
378 | if (net->dev_unreg_count > 0) { | |
379 | unregistering = true; | |
380 | break; | |
381 | } | |
382 | } | |
383 | if (!unregistering) | |
384 | break; | |
385 | __rtnl_unlock(); | |
ff960a73 PZ |
386 | |
387 | wait_woken(&wait, TASK_UNINTERRUPTIBLE, MAX_SCHEDULE_TIMEOUT); | |
200b916f | 388 | } |
ff960a73 | 389 | remove_wait_queue(&netdev_unregistering_wq, &wait); |
200b916f CW |
390 | } |
391 | ||
38f7b870 PM |
392 | /** |
393 | * rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink. | |
394 | * @ops: struct rtnl_link_ops * to unregister | |
395 | */ | |
396 | void rtnl_link_unregister(struct rtnl_link_ops *ops) | |
397 | { | |
200b916f CW |
398 | /* Close the race with cleanup_net() */ |
399 | mutex_lock(&net_mutex); | |
400 | rtnl_lock_unregistering_all(); | |
38f7b870 PM |
401 | __rtnl_link_unregister(ops); |
402 | rtnl_unlock(); | |
200b916f | 403 | mutex_unlock(&net_mutex); |
38f7b870 | 404 | } |
38f7b870 PM |
405 | EXPORT_SYMBOL_GPL(rtnl_link_unregister); |
406 | ||
ba7d49b1 JP |
407 | static size_t rtnl_link_get_slave_info_data_size(const struct net_device *dev) |
408 | { | |
409 | struct net_device *master_dev; | |
410 | const struct rtnl_link_ops *ops; | |
411 | ||
412 | master_dev = netdev_master_upper_dev_get((struct net_device *) dev); | |
413 | if (!master_dev) | |
414 | return 0; | |
415 | ops = master_dev->rtnl_link_ops; | |
6049f253 | 416 | if (!ops || !ops->get_slave_size) |
ba7d49b1 JP |
417 | return 0; |
418 | /* IFLA_INFO_SLAVE_DATA + nested data */ | |
419 | return nla_total_size(sizeof(struct nlattr)) + | |
420 | ops->get_slave_size(master_dev, dev); | |
421 | } | |
422 | ||
38f7b870 PM |
423 | static size_t rtnl_link_get_size(const struct net_device *dev) |
424 | { | |
425 | const struct rtnl_link_ops *ops = dev->rtnl_link_ops; | |
426 | size_t size; | |
427 | ||
428 | if (!ops) | |
429 | return 0; | |
430 | ||
369cf77a TG |
431 | size = nla_total_size(sizeof(struct nlattr)) + /* IFLA_LINKINFO */ |
432 | nla_total_size(strlen(ops->kind) + 1); /* IFLA_INFO_KIND */ | |
38f7b870 PM |
433 | |
434 | if (ops->get_size) | |
435 | /* IFLA_INFO_DATA + nested data */ | |
369cf77a | 436 | size += nla_total_size(sizeof(struct nlattr)) + |
38f7b870 PM |
437 | ops->get_size(dev); |
438 | ||
439 | if (ops->get_xstats_size) | |
369cf77a TG |
440 | /* IFLA_INFO_XSTATS */ |
441 | size += nla_total_size(ops->get_xstats_size(dev)); | |
38f7b870 | 442 | |
ba7d49b1 JP |
443 | size += rtnl_link_get_slave_info_data_size(dev); |
444 | ||
38f7b870 PM |
445 | return size; |
446 | } | |
447 | ||
f8ff182c TG |
448 | static LIST_HEAD(rtnl_af_ops); |
449 | ||
450 | static const struct rtnl_af_ops *rtnl_af_lookup(const int family) | |
451 | { | |
452 | const struct rtnl_af_ops *ops; | |
453 | ||
454 | list_for_each_entry(ops, &rtnl_af_ops, list) { | |
455 | if (ops->family == family) | |
456 | return ops; | |
457 | } | |
458 | ||
459 | return NULL; | |
460 | } | |
461 | ||
f8ff182c TG |
462 | /** |
463 | * rtnl_af_register - Register rtnl_af_ops with rtnetlink. | |
464 | * @ops: struct rtnl_af_ops * to register | |
465 | * | |
466 | * Returns 0 on success or a negative error code. | |
467 | */ | |
3678a9d8 | 468 | void rtnl_af_register(struct rtnl_af_ops *ops) |
f8ff182c | 469 | { |
f8ff182c | 470 | rtnl_lock(); |
3678a9d8 | 471 | list_add_tail(&ops->list, &rtnl_af_ops); |
f8ff182c | 472 | rtnl_unlock(); |
f8ff182c TG |
473 | } |
474 | EXPORT_SYMBOL_GPL(rtnl_af_register); | |
475 | ||
476 | /** | |
477 | * __rtnl_af_unregister - Unregister rtnl_af_ops from rtnetlink. | |
478 | * @ops: struct rtnl_af_ops * to unregister | |
479 | * | |
480 | * The caller must hold the rtnl_mutex. | |
481 | */ | |
482 | void __rtnl_af_unregister(struct rtnl_af_ops *ops) | |
483 | { | |
484 | list_del(&ops->list); | |
485 | } | |
486 | EXPORT_SYMBOL_GPL(__rtnl_af_unregister); | |
487 | ||
488 | /** | |
489 | * rtnl_af_unregister - Unregister rtnl_af_ops from rtnetlink. | |
490 | * @ops: struct rtnl_af_ops * to unregister | |
491 | */ | |
492 | void rtnl_af_unregister(struct rtnl_af_ops *ops) | |
493 | { | |
494 | rtnl_lock(); | |
495 | __rtnl_af_unregister(ops); | |
496 | rtnl_unlock(); | |
497 | } | |
498 | EXPORT_SYMBOL_GPL(rtnl_af_unregister); | |
499 | ||
500 | static size_t rtnl_link_get_af_size(const struct net_device *dev) | |
501 | { | |
502 | struct rtnl_af_ops *af_ops; | |
503 | size_t size; | |
504 | ||
505 | /* IFLA_AF_SPEC */ | |
506 | size = nla_total_size(sizeof(struct nlattr)); | |
507 | ||
508 | list_for_each_entry(af_ops, &rtnl_af_ops, list) { | |
509 | if (af_ops->get_link_af_size) { | |
510 | /* AF_* + nested data */ | |
511 | size += nla_total_size(sizeof(struct nlattr)) + | |
512 | af_ops->get_link_af_size(dev); | |
513 | } | |
514 | } | |
515 | ||
516 | return size; | |
517 | } | |
518 | ||
ba7d49b1 | 519 | static bool rtnl_have_link_slave_info(const struct net_device *dev) |
38f7b870 | 520 | { |
ba7d49b1 | 521 | struct net_device *master_dev; |
38f7b870 | 522 | |
ba7d49b1 | 523 | master_dev = netdev_master_upper_dev_get((struct net_device *) dev); |
813f020c | 524 | if (master_dev && master_dev->rtnl_link_ops) |
ba7d49b1 JP |
525 | return true; |
526 | return false; | |
527 | } | |
528 | ||
529 | static int rtnl_link_slave_info_fill(struct sk_buff *skb, | |
530 | const struct net_device *dev) | |
531 | { | |
532 | struct net_device *master_dev; | |
533 | const struct rtnl_link_ops *ops; | |
534 | struct nlattr *slave_data; | |
535 | int err; | |
38f7b870 | 536 | |
ba7d49b1 JP |
537 | master_dev = netdev_master_upper_dev_get((struct net_device *) dev); |
538 | if (!master_dev) | |
539 | return 0; | |
540 | ops = master_dev->rtnl_link_ops; | |
541 | if (!ops) | |
542 | return 0; | |
543 | if (nla_put_string(skb, IFLA_INFO_SLAVE_KIND, ops->kind) < 0) | |
544 | return -EMSGSIZE; | |
545 | if (ops->fill_slave_info) { | |
546 | slave_data = nla_nest_start(skb, IFLA_INFO_SLAVE_DATA); | |
547 | if (!slave_data) | |
548 | return -EMSGSIZE; | |
549 | err = ops->fill_slave_info(skb, master_dev, dev); | |
550 | if (err < 0) | |
551 | goto err_cancel_slave_data; | |
552 | nla_nest_end(skb, slave_data); | |
553 | } | |
554 | return 0; | |
555 | ||
556 | err_cancel_slave_data: | |
557 | nla_nest_cancel(skb, slave_data); | |
558 | return err; | |
559 | } | |
560 | ||
561 | static int rtnl_link_info_fill(struct sk_buff *skb, | |
562 | const struct net_device *dev) | |
563 | { | |
564 | const struct rtnl_link_ops *ops = dev->rtnl_link_ops; | |
565 | struct nlattr *data; | |
566 | int err; | |
567 | ||
568 | if (!ops) | |
569 | return 0; | |
38f7b870 | 570 | if (nla_put_string(skb, IFLA_INFO_KIND, ops->kind) < 0) |
ba7d49b1 | 571 | return -EMSGSIZE; |
38f7b870 PM |
572 | if (ops->fill_xstats) { |
573 | err = ops->fill_xstats(skb, dev); | |
574 | if (err < 0) | |
ba7d49b1 | 575 | return err; |
38f7b870 PM |
576 | } |
577 | if (ops->fill_info) { | |
578 | data = nla_nest_start(skb, IFLA_INFO_DATA); | |
ba7d49b1 JP |
579 | if (data == NULL) |
580 | return -EMSGSIZE; | |
38f7b870 PM |
581 | err = ops->fill_info(skb, dev); |
582 | if (err < 0) | |
583 | goto err_cancel_data; | |
584 | nla_nest_end(skb, data); | |
585 | } | |
38f7b870 PM |
586 | return 0; |
587 | ||
588 | err_cancel_data: | |
589 | nla_nest_cancel(skb, data); | |
ba7d49b1 JP |
590 | return err; |
591 | } | |
592 | ||
593 | static int rtnl_link_fill(struct sk_buff *skb, const struct net_device *dev) | |
594 | { | |
595 | struct nlattr *linkinfo; | |
596 | int err = -EMSGSIZE; | |
597 | ||
598 | linkinfo = nla_nest_start(skb, IFLA_LINKINFO); | |
599 | if (linkinfo == NULL) | |
600 | goto out; | |
601 | ||
602 | err = rtnl_link_info_fill(skb, dev); | |
603 | if (err < 0) | |
604 | goto err_cancel_link; | |
605 | ||
606 | err = rtnl_link_slave_info_fill(skb, dev); | |
607 | if (err < 0) | |
608 | goto err_cancel_link; | |
609 | ||
610 | nla_nest_end(skb, linkinfo); | |
611 | return 0; | |
612 | ||
38f7b870 PM |
613 | err_cancel_link: |
614 | nla_nest_cancel(skb, linkinfo); | |
615 | out: | |
616 | return err; | |
617 | } | |
618 | ||
95c96174 | 619 | int rtnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, unsigned int group, int echo) |
1da177e4 | 620 | { |
97c53cac | 621 | struct sock *rtnl = net->rtnl; |
1da177e4 LT |
622 | int err = 0; |
623 | ||
ac6d439d | 624 | NETLINK_CB(skb).dst_group = group; |
1da177e4 LT |
625 | if (echo) |
626 | atomic_inc(&skb->users); | |
627 | netlink_broadcast(rtnl, skb, pid, group, GFP_KERNEL); | |
628 | if (echo) | |
629 | err = netlink_unicast(rtnl, skb, pid, MSG_DONTWAIT); | |
630 | return err; | |
631 | } | |
632 | ||
97c53cac | 633 | int rtnl_unicast(struct sk_buff *skb, struct net *net, u32 pid) |
2942e900 | 634 | { |
97c53cac DL |
635 | struct sock *rtnl = net->rtnl; |
636 | ||
2942e900 TG |
637 | return nlmsg_unicast(rtnl, skb, pid); |
638 | } | |
e0d087af | 639 | EXPORT_SYMBOL(rtnl_unicast); |
2942e900 | 640 | |
1ce85fe4 PNA |
641 | void rtnl_notify(struct sk_buff *skb, struct net *net, u32 pid, u32 group, |
642 | struct nlmsghdr *nlh, gfp_t flags) | |
97676b6b | 643 | { |
97c53cac | 644 | struct sock *rtnl = net->rtnl; |
97676b6b TG |
645 | int report = 0; |
646 | ||
647 | if (nlh) | |
648 | report = nlmsg_report(nlh); | |
649 | ||
1ce85fe4 | 650 | nlmsg_notify(rtnl, skb, pid, group, report, flags); |
97676b6b | 651 | } |
e0d087af | 652 | EXPORT_SYMBOL(rtnl_notify); |
97676b6b | 653 | |
97c53cac | 654 | void rtnl_set_sk_err(struct net *net, u32 group, int error) |
97676b6b | 655 | { |
97c53cac DL |
656 | struct sock *rtnl = net->rtnl; |
657 | ||
97676b6b TG |
658 | netlink_set_err(rtnl, 0, group, error); |
659 | } | |
e0d087af | 660 | EXPORT_SYMBOL(rtnl_set_sk_err); |
97676b6b | 661 | |
1da177e4 LT |
662 | int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics) |
663 | { | |
2d7202bf TG |
664 | struct nlattr *mx; |
665 | int i, valid = 0; | |
666 | ||
667 | mx = nla_nest_start(skb, RTA_METRICS); | |
668 | if (mx == NULL) | |
669 | return -ENOBUFS; | |
670 | ||
671 | for (i = 0; i < RTAX_MAX; i++) { | |
672 | if (metrics[i]) { | |
ea697639 DB |
673 | if (i == RTAX_CC_ALGO - 1) { |
674 | char tmp[TCP_CA_NAME_MAX], *name; | |
675 | ||
676 | name = tcp_ca_get_name_by_key(metrics[i], tmp); | |
677 | if (!name) | |
678 | continue; | |
679 | if (nla_put_string(skb, i + 1, name)) | |
680 | goto nla_put_failure; | |
681 | } else { | |
682 | if (nla_put_u32(skb, i + 1, metrics[i])) | |
683 | goto nla_put_failure; | |
684 | } | |
2d7202bf | 685 | valid++; |
2d7202bf | 686 | } |
1da177e4 | 687 | } |
1da177e4 | 688 | |
a57d27fc DM |
689 | if (!valid) { |
690 | nla_nest_cancel(skb, mx); | |
691 | return 0; | |
692 | } | |
2d7202bf TG |
693 | |
694 | return nla_nest_end(skb, mx); | |
695 | ||
696 | nla_put_failure: | |
bc3ed28c TG |
697 | nla_nest_cancel(skb, mx); |
698 | return -EMSGSIZE; | |
1da177e4 | 699 | } |
e0d087af | 700 | EXPORT_SYMBOL(rtnetlink_put_metrics); |
1da177e4 | 701 | |
e3703b3d | 702 | int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst, u32 id, |
87a50699 | 703 | long expires, u32 error) |
e3703b3d TG |
704 | { |
705 | struct rta_cacheinfo ci = { | |
a399a805 | 706 | .rta_lastuse = jiffies_delta_to_clock_t(jiffies - dst->lastuse), |
e3703b3d TG |
707 | .rta_used = dst->__use, |
708 | .rta_clntref = atomic_read(&(dst->__refcnt)), | |
709 | .rta_error = error, | |
710 | .rta_id = id, | |
e3703b3d TG |
711 | }; |
712 | ||
8253947e LW |
713 | if (expires) { |
714 | unsigned long clock; | |
e3703b3d | 715 | |
8253947e LW |
716 | clock = jiffies_to_clock_t(abs(expires)); |
717 | clock = min_t(unsigned long, clock, INT_MAX); | |
718 | ci.rta_expires = (expires > 0) ? clock : -clock; | |
719 | } | |
e3703b3d TG |
720 | return nla_put(skb, RTA_CACHEINFO, sizeof(ci), &ci); |
721 | } | |
e3703b3d | 722 | EXPORT_SYMBOL_GPL(rtnl_put_cacheinfo); |
1da177e4 | 723 | |
93b2d4a2 | 724 | static void set_operstate(struct net_device *dev, unsigned char transition) |
b00055aa SR |
725 | { |
726 | unsigned char operstate = dev->operstate; | |
727 | ||
e0d087af | 728 | switch (transition) { |
b00055aa SR |
729 | case IF_OPER_UP: |
730 | if ((operstate == IF_OPER_DORMANT || | |
731 | operstate == IF_OPER_UNKNOWN) && | |
732 | !netif_dormant(dev)) | |
733 | operstate = IF_OPER_UP; | |
734 | break; | |
735 | ||
736 | case IF_OPER_DORMANT: | |
737 | if (operstate == IF_OPER_UP || | |
738 | operstate == IF_OPER_UNKNOWN) | |
739 | operstate = IF_OPER_DORMANT; | |
740 | break; | |
3ff50b79 | 741 | } |
b00055aa SR |
742 | |
743 | if (dev->operstate != operstate) { | |
744 | write_lock_bh(&dev_base_lock); | |
745 | dev->operstate = operstate; | |
746 | write_unlock_bh(&dev_base_lock); | |
93b2d4a2 DM |
747 | netdev_state_change(dev); |
748 | } | |
b00055aa SR |
749 | } |
750 | ||
b1beb681 JB |
751 | static unsigned int rtnl_dev_get_flags(const struct net_device *dev) |
752 | { | |
753 | return (dev->flags & ~(IFF_PROMISC | IFF_ALLMULTI)) | | |
754 | (dev->gflags & (IFF_PROMISC | IFF_ALLMULTI)); | |
755 | } | |
756 | ||
3729d502 PM |
757 | static unsigned int rtnl_dev_combine_flags(const struct net_device *dev, |
758 | const struct ifinfomsg *ifm) | |
759 | { | |
760 | unsigned int flags = ifm->ifi_flags; | |
761 | ||
762 | /* bugwards compatibility: ifi_change == 0 is treated as ~0 */ | |
763 | if (ifm->ifi_change) | |
764 | flags = (flags & ifm->ifi_change) | | |
b1beb681 | 765 | (rtnl_dev_get_flags(dev) & ~ifm->ifi_change); |
3729d502 PM |
766 | |
767 | return flags; | |
768 | } | |
769 | ||
b60c5115 | 770 | static void copy_rtnl_link_stats(struct rtnl_link_stats *a, |
be1f3c2c | 771 | const struct rtnl_link_stats64 *b) |
1da177e4 | 772 | { |
b60c5115 TG |
773 | a->rx_packets = b->rx_packets; |
774 | a->tx_packets = b->tx_packets; | |
775 | a->rx_bytes = b->rx_bytes; | |
776 | a->tx_bytes = b->tx_bytes; | |
777 | a->rx_errors = b->rx_errors; | |
778 | a->tx_errors = b->tx_errors; | |
779 | a->rx_dropped = b->rx_dropped; | |
780 | a->tx_dropped = b->tx_dropped; | |
781 | ||
782 | a->multicast = b->multicast; | |
783 | a->collisions = b->collisions; | |
784 | ||
785 | a->rx_length_errors = b->rx_length_errors; | |
786 | a->rx_over_errors = b->rx_over_errors; | |
787 | a->rx_crc_errors = b->rx_crc_errors; | |
788 | a->rx_frame_errors = b->rx_frame_errors; | |
789 | a->rx_fifo_errors = b->rx_fifo_errors; | |
790 | a->rx_missed_errors = b->rx_missed_errors; | |
791 | ||
792 | a->tx_aborted_errors = b->tx_aborted_errors; | |
793 | a->tx_carrier_errors = b->tx_carrier_errors; | |
794 | a->tx_fifo_errors = b->tx_fifo_errors; | |
795 | a->tx_heartbeat_errors = b->tx_heartbeat_errors; | |
796 | a->tx_window_errors = b->tx_window_errors; | |
797 | ||
798 | a->rx_compressed = b->rx_compressed; | |
799 | a->tx_compressed = b->tx_compressed; | |
10708f37 JE |
800 | } |
801 | ||
be1f3c2c | 802 | static void copy_rtnl_link_stats64(void *v, const struct rtnl_link_stats64 *b) |
10708f37 | 803 | { |
afdcba37 | 804 | memcpy(v, b, sizeof(*b)); |
10708f37 | 805 | } |
1da177e4 | 806 | |
c02db8c6 | 807 | /* All VF info */ |
115c9b81 GR |
808 | static inline int rtnl_vfinfo_size(const struct net_device *dev, |
809 | u32 ext_filter_mask) | |
ebc08a6f | 810 | { |
115c9b81 GR |
811 | if (dev->dev.parent && dev_is_pci(dev->dev.parent) && |
812 | (ext_filter_mask & RTEXT_FILTER_VF)) { | |
c02db8c6 | 813 | int num_vfs = dev_num_vf(dev->dev.parent); |
045de01a SF |
814 | size_t size = nla_total_size(sizeof(struct nlattr)); |
815 | size += nla_total_size(num_vfs * sizeof(struct nlattr)); | |
816 | size += num_vfs * | |
817 | (nla_total_size(sizeof(struct ifla_vf_mac)) + | |
818 | nla_total_size(sizeof(struct ifla_vf_vlan)) + | |
ed616689 | 819 | nla_total_size(sizeof(struct ifla_vf_spoofchk)) + |
945a3676 JB |
820 | nla_total_size(sizeof(struct ifla_vf_rate)) + |
821 | nla_total_size(sizeof(struct ifla_vf_link_state))); | |
c02db8c6 CW |
822 | return size; |
823 | } else | |
ebc08a6f WM |
824 | return 0; |
825 | } | |
826 | ||
c53864fd DG |
827 | static size_t rtnl_port_size(const struct net_device *dev, |
828 | u32 ext_filter_mask) | |
57b61080 SF |
829 | { |
830 | size_t port_size = nla_total_size(4) /* PORT_VF */ | |
831 | + nla_total_size(PORT_PROFILE_MAX) /* PORT_PROFILE */ | |
832 | + nla_total_size(sizeof(struct ifla_port_vsi)) | |
833 | /* PORT_VSI_TYPE */ | |
834 | + nla_total_size(PORT_UUID_MAX) /* PORT_INSTANCE_UUID */ | |
835 | + nla_total_size(PORT_UUID_MAX) /* PORT_HOST_UUID */ | |
836 | + nla_total_size(1) /* PROT_VDP_REQUEST */ | |
837 | + nla_total_size(2); /* PORT_VDP_RESPONSE */ | |
838 | size_t vf_ports_size = nla_total_size(sizeof(struct nlattr)); | |
839 | size_t vf_port_size = nla_total_size(sizeof(struct nlattr)) | |
840 | + port_size; | |
841 | size_t port_self_size = nla_total_size(sizeof(struct nlattr)) | |
842 | + port_size; | |
843 | ||
c53864fd DG |
844 | if (!dev->netdev_ops->ndo_get_vf_port || !dev->dev.parent || |
845 | !(ext_filter_mask & RTEXT_FILTER_VF)) | |
57b61080 SF |
846 | return 0; |
847 | if (dev_num_vf(dev->dev.parent)) | |
848 | return port_self_size + vf_ports_size + | |
849 | vf_port_size * dev_num_vf(dev->dev.parent); | |
850 | else | |
851 | return port_self_size; | |
852 | } | |
853 | ||
115c9b81 GR |
854 | static noinline size_t if_nlmsg_size(const struct net_device *dev, |
855 | u32 ext_filter_mask) | |
339bf98f TG |
856 | { |
857 | return NLMSG_ALIGN(sizeof(struct ifinfomsg)) | |
858 | + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */ | |
0b815a1a | 859 | + nla_total_size(IFALIASZ) /* IFLA_IFALIAS */ |
339bf98f TG |
860 | + nla_total_size(IFNAMSIZ) /* IFLA_QDISC */ |
861 | + nla_total_size(sizeof(struct rtnl_link_ifmap)) | |
862 | + nla_total_size(sizeof(struct rtnl_link_stats)) | |
adcfe196 | 863 | + nla_total_size(sizeof(struct rtnl_link_stats64)) |
339bf98f TG |
864 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */ |
865 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_BROADCAST */ | |
866 | + nla_total_size(4) /* IFLA_TXQLEN */ | |
867 | + nla_total_size(4) /* IFLA_WEIGHT */ | |
868 | + nla_total_size(4) /* IFLA_MTU */ | |
869 | + nla_total_size(4) /* IFLA_LINK */ | |
870 | + nla_total_size(4) /* IFLA_MASTER */ | |
9a57247f | 871 | + nla_total_size(1) /* IFLA_CARRIER */ |
edbc0bb3 | 872 | + nla_total_size(4) /* IFLA_PROMISCUITY */ |
76ff5cc9 JP |
873 | + nla_total_size(4) /* IFLA_NUM_TX_QUEUES */ |
874 | + nla_total_size(4) /* IFLA_NUM_RX_QUEUES */ | |
339bf98f | 875 | + nla_total_size(1) /* IFLA_OPERSTATE */ |
38f7b870 | 876 | + nla_total_size(1) /* IFLA_LINKMODE */ |
2d3b479d | 877 | + nla_total_size(4) /* IFLA_CARRIER_CHANGES */ |
115c9b81 GR |
878 | + nla_total_size(ext_filter_mask |
879 | & RTEXT_FILTER_VF ? 4 : 0) /* IFLA_NUM_VF */ | |
880 | + rtnl_vfinfo_size(dev, ext_filter_mask) /* IFLA_VFINFO_LIST */ | |
c53864fd | 881 | + rtnl_port_size(dev, ext_filter_mask) /* IFLA_VF_PORTS + IFLA_PORT_SELF */ |
f8ff182c | 882 | + rtnl_link_get_size(dev) /* IFLA_LINKINFO */ |
66cae9ed | 883 | + rtnl_link_get_af_size(dev) /* IFLA_AF_SPEC */ |
82f28412 JP |
884 | + nla_total_size(MAX_PHYS_ITEM_ID_LEN) /* IFLA_PHYS_PORT_ID */ |
885 | + nla_total_size(MAX_PHYS_ITEM_ID_LEN); /* IFLA_PHYS_SWITCH_ID */ | |
339bf98f TG |
886 | } |
887 | ||
57b61080 SF |
888 | static int rtnl_vf_ports_fill(struct sk_buff *skb, struct net_device *dev) |
889 | { | |
890 | struct nlattr *vf_ports; | |
891 | struct nlattr *vf_port; | |
892 | int vf; | |
893 | int err; | |
894 | ||
895 | vf_ports = nla_nest_start(skb, IFLA_VF_PORTS); | |
896 | if (!vf_ports) | |
897 | return -EMSGSIZE; | |
898 | ||
899 | for (vf = 0; vf < dev_num_vf(dev->dev.parent); vf++) { | |
900 | vf_port = nla_nest_start(skb, IFLA_VF_PORT); | |
8ca94183 SF |
901 | if (!vf_port) |
902 | goto nla_put_failure; | |
a6574349 DM |
903 | if (nla_put_u32(skb, IFLA_PORT_VF, vf)) |
904 | goto nla_put_failure; | |
57b61080 | 905 | err = dev->netdev_ops->ndo_get_vf_port(dev, vf, skb); |
8ca94183 SF |
906 | if (err == -EMSGSIZE) |
907 | goto nla_put_failure; | |
57b61080 | 908 | if (err) { |
57b61080 SF |
909 | nla_nest_cancel(skb, vf_port); |
910 | continue; | |
911 | } | |
912 | nla_nest_end(skb, vf_port); | |
913 | } | |
914 | ||
915 | nla_nest_end(skb, vf_ports); | |
916 | ||
917 | return 0; | |
8ca94183 SF |
918 | |
919 | nla_put_failure: | |
920 | nla_nest_cancel(skb, vf_ports); | |
921 | return -EMSGSIZE; | |
57b61080 SF |
922 | } |
923 | ||
924 | static int rtnl_port_self_fill(struct sk_buff *skb, struct net_device *dev) | |
925 | { | |
926 | struct nlattr *port_self; | |
927 | int err; | |
928 | ||
929 | port_self = nla_nest_start(skb, IFLA_PORT_SELF); | |
930 | if (!port_self) | |
931 | return -EMSGSIZE; | |
932 | ||
933 | err = dev->netdev_ops->ndo_get_vf_port(dev, PORT_SELF_VF, skb); | |
934 | if (err) { | |
935 | nla_nest_cancel(skb, port_self); | |
8ca94183 | 936 | return (err == -EMSGSIZE) ? err : 0; |
57b61080 SF |
937 | } |
938 | ||
939 | nla_nest_end(skb, port_self); | |
940 | ||
941 | return 0; | |
942 | } | |
943 | ||
c53864fd DG |
944 | static int rtnl_port_fill(struct sk_buff *skb, struct net_device *dev, |
945 | u32 ext_filter_mask) | |
57b61080 SF |
946 | { |
947 | int err; | |
948 | ||
c53864fd DG |
949 | if (!dev->netdev_ops->ndo_get_vf_port || !dev->dev.parent || |
950 | !(ext_filter_mask & RTEXT_FILTER_VF)) | |
57b61080 SF |
951 | return 0; |
952 | ||
953 | err = rtnl_port_self_fill(skb, dev); | |
954 | if (err) | |
955 | return err; | |
956 | ||
957 | if (dev_num_vf(dev->dev.parent)) { | |
958 | err = rtnl_vf_ports_fill(skb, dev); | |
959 | if (err) | |
960 | return err; | |
961 | } | |
962 | ||
963 | return 0; | |
964 | } | |
965 | ||
66cae9ed JP |
966 | static int rtnl_phys_port_id_fill(struct sk_buff *skb, struct net_device *dev) |
967 | { | |
968 | int err; | |
02637fce | 969 | struct netdev_phys_item_id ppid; |
66cae9ed JP |
970 | |
971 | err = dev_get_phys_port_id(dev, &ppid); | |
972 | if (err) { | |
973 | if (err == -EOPNOTSUPP) | |
974 | return 0; | |
975 | return err; | |
976 | } | |
977 | ||
978 | if (nla_put(skb, IFLA_PHYS_PORT_ID, ppid.id_len, ppid.id)) | |
979 | return -EMSGSIZE; | |
980 | ||
981 | return 0; | |
982 | } | |
983 | ||
82f28412 JP |
984 | static int rtnl_phys_switch_id_fill(struct sk_buff *skb, struct net_device *dev) |
985 | { | |
986 | int err; | |
987 | struct netdev_phys_item_id psid; | |
988 | ||
989 | err = netdev_switch_parent_id_get(dev, &psid); | |
990 | if (err) { | |
991 | if (err == -EOPNOTSUPP) | |
992 | return 0; | |
993 | return err; | |
994 | } | |
995 | ||
996 | if (nla_put(skb, IFLA_PHYS_SWITCH_ID, psid.id_len, psid.id)) | |
997 | return -EMSGSIZE; | |
998 | ||
999 | return 0; | |
1000 | } | |
1001 | ||
b60c5115 | 1002 | static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev, |
575c3e2a | 1003 | int type, u32 pid, u32 seq, u32 change, |
115c9b81 | 1004 | unsigned int flags, u32 ext_filter_mask) |
b60c5115 TG |
1005 | { |
1006 | struct ifinfomsg *ifm; | |
1007 | struct nlmsghdr *nlh; | |
28172739 | 1008 | struct rtnl_link_stats64 temp; |
be1f3c2c | 1009 | const struct rtnl_link_stats64 *stats; |
f8ff182c TG |
1010 | struct nlattr *attr, *af_spec; |
1011 | struct rtnl_af_ops *af_ops; | |
898e5061 | 1012 | struct net_device *upper_dev = netdev_master_upper_dev_get(dev); |
1da177e4 | 1013 | |
2907c35f | 1014 | ASSERT_RTNL(); |
b60c5115 TG |
1015 | nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ifm), flags); |
1016 | if (nlh == NULL) | |
26932566 | 1017 | return -EMSGSIZE; |
1da177e4 | 1018 | |
b60c5115 TG |
1019 | ifm = nlmsg_data(nlh); |
1020 | ifm->ifi_family = AF_UNSPEC; | |
1021 | ifm->__ifi_pad = 0; | |
1022 | ifm->ifi_type = dev->type; | |
1023 | ifm->ifi_index = dev->ifindex; | |
1024 | ifm->ifi_flags = dev_get_flags(dev); | |
1025 | ifm->ifi_change = change; | |
1026 | ||
a6574349 DM |
1027 | if (nla_put_string(skb, IFLA_IFNAME, dev->name) || |
1028 | nla_put_u32(skb, IFLA_TXQLEN, dev->tx_queue_len) || | |
1029 | nla_put_u8(skb, IFLA_OPERSTATE, | |
1030 | netif_running(dev) ? dev->operstate : IF_OPER_DOWN) || | |
1031 | nla_put_u8(skb, IFLA_LINKMODE, dev->link_mode) || | |
1032 | nla_put_u32(skb, IFLA_MTU, dev->mtu) || | |
1033 | nla_put_u32(skb, IFLA_GROUP, dev->group) || | |
edbc0bb3 | 1034 | nla_put_u32(skb, IFLA_PROMISCUITY, dev->promiscuity) || |
76ff5cc9 | 1035 | nla_put_u32(skb, IFLA_NUM_TX_QUEUES, dev->num_tx_queues) || |
1d69c2b3 | 1036 | #ifdef CONFIG_RPS |
76ff5cc9 | 1037 | nla_put_u32(skb, IFLA_NUM_RX_QUEUES, dev->num_rx_queues) || |
1d69c2b3 | 1038 | #endif |
a6574349 DM |
1039 | (dev->ifindex != dev->iflink && |
1040 | nla_put_u32(skb, IFLA_LINK, dev->iflink)) || | |
898e5061 JP |
1041 | (upper_dev && |
1042 | nla_put_u32(skb, IFLA_MASTER, upper_dev->ifindex)) || | |
9a57247f | 1043 | nla_put_u8(skb, IFLA_CARRIER, netif_carrier_ok(dev)) || |
a6574349 DM |
1044 | (dev->qdisc && |
1045 | nla_put_string(skb, IFLA_QDISC, dev->qdisc->ops->id)) || | |
1046 | (dev->ifalias && | |
2d3b479d | 1047 | nla_put_string(skb, IFLA_IFALIAS, dev->ifalias)) || |
1048 | nla_put_u32(skb, IFLA_CARRIER_CHANGES, | |
1049 | atomic_read(&dev->carrier_changes))) | |
a6574349 | 1050 | goto nla_put_failure; |
0b815a1a | 1051 | |
1da177e4 LT |
1052 | if (1) { |
1053 | struct rtnl_link_ifmap map = { | |
1054 | .mem_start = dev->mem_start, | |
1055 | .mem_end = dev->mem_end, | |
1056 | .base_addr = dev->base_addr, | |
1057 | .irq = dev->irq, | |
1058 | .dma = dev->dma, | |
1059 | .port = dev->if_port, | |
1060 | }; | |
a6574349 DM |
1061 | if (nla_put(skb, IFLA_MAP, sizeof(map), &map)) |
1062 | goto nla_put_failure; | |
1da177e4 LT |
1063 | } |
1064 | ||
1065 | if (dev->addr_len) { | |
a6574349 DM |
1066 | if (nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr) || |
1067 | nla_put(skb, IFLA_BROADCAST, dev->addr_len, dev->broadcast)) | |
1068 | goto nla_put_failure; | |
1da177e4 LT |
1069 | } |
1070 | ||
66cae9ed JP |
1071 | if (rtnl_phys_port_id_fill(skb, dev)) |
1072 | goto nla_put_failure; | |
1073 | ||
82f28412 JP |
1074 | if (rtnl_phys_switch_id_fill(skb, dev)) |
1075 | goto nla_put_failure; | |
1076 | ||
96e74088 PE |
1077 | attr = nla_reserve(skb, IFLA_STATS, |
1078 | sizeof(struct rtnl_link_stats)); | |
1079 | if (attr == NULL) | |
1080 | goto nla_put_failure; | |
b60c5115 | 1081 | |
28172739 | 1082 | stats = dev_get_stats(dev, &temp); |
96e74088 | 1083 | copy_rtnl_link_stats(nla_data(attr), stats); |
1da177e4 | 1084 | |
10708f37 JE |
1085 | attr = nla_reserve(skb, IFLA_STATS64, |
1086 | sizeof(struct rtnl_link_stats64)); | |
1087 | if (attr == NULL) | |
1088 | goto nla_put_failure; | |
10708f37 JE |
1089 | copy_rtnl_link_stats64(nla_data(attr), stats); |
1090 | ||
a6574349 DM |
1091 | if (dev->dev.parent && (ext_filter_mask & RTEXT_FILTER_VF) && |
1092 | nla_put_u32(skb, IFLA_NUM_VF, dev_num_vf(dev->dev.parent))) | |
1093 | goto nla_put_failure; | |
57b61080 | 1094 | |
115c9b81 GR |
1095 | if (dev->netdev_ops->ndo_get_vf_config && dev->dev.parent |
1096 | && (ext_filter_mask & RTEXT_FILTER_VF)) { | |
ebc08a6f | 1097 | int i; |
ebc08a6f | 1098 | |
c02db8c6 CW |
1099 | struct nlattr *vfinfo, *vf; |
1100 | int num_vfs = dev_num_vf(dev->dev.parent); | |
1101 | ||
c02db8c6 CW |
1102 | vfinfo = nla_nest_start(skb, IFLA_VFINFO_LIST); |
1103 | if (!vfinfo) | |
1104 | goto nla_put_failure; | |
1105 | for (i = 0; i < num_vfs; i++) { | |
1106 | struct ifla_vf_info ivi; | |
1107 | struct ifla_vf_mac vf_mac; | |
1108 | struct ifla_vf_vlan vf_vlan; | |
ed616689 | 1109 | struct ifla_vf_rate vf_rate; |
c02db8c6 | 1110 | struct ifla_vf_tx_rate vf_tx_rate; |
5f8444a3 | 1111 | struct ifla_vf_spoofchk vf_spoofchk; |
1d8faf48 | 1112 | struct ifla_vf_link_state vf_linkstate; |
5f8444a3 GR |
1113 | |
1114 | /* | |
1115 | * Not all SR-IOV capable drivers support the | |
1116 | * spoofcheck query. Preset to -1 so the user | |
1117 | * space tool can detect that the driver didn't | |
1118 | * report anything. | |
1119 | */ | |
1120 | ivi.spoofchk = -1; | |
84d73cd3 | 1121 | memset(ivi.mac, 0, sizeof(ivi.mac)); |
1d8faf48 RE |
1122 | /* The default value for VF link state is "auto" |
1123 | * IFLA_VF_LINK_STATE_AUTO which equals zero | |
1124 | */ | |
1125 | ivi.linkstate = 0; | |
ebc08a6f WM |
1126 | if (dev->netdev_ops->ndo_get_vf_config(dev, i, &ivi)) |
1127 | break; | |
5f8444a3 GR |
1128 | vf_mac.vf = |
1129 | vf_vlan.vf = | |
ed616689 | 1130 | vf_rate.vf = |
5f8444a3 | 1131 | vf_tx_rate.vf = |
1d8faf48 RE |
1132 | vf_spoofchk.vf = |
1133 | vf_linkstate.vf = ivi.vf; | |
5f8444a3 | 1134 | |
c02db8c6 CW |
1135 | memcpy(vf_mac.mac, ivi.mac, sizeof(ivi.mac)); |
1136 | vf_vlan.vlan = ivi.vlan; | |
1137 | vf_vlan.qos = ivi.qos; | |
ed616689 SC |
1138 | vf_tx_rate.rate = ivi.max_tx_rate; |
1139 | vf_rate.min_tx_rate = ivi.min_tx_rate; | |
1140 | vf_rate.max_tx_rate = ivi.max_tx_rate; | |
5f8444a3 | 1141 | vf_spoofchk.setting = ivi.spoofchk; |
1d8faf48 | 1142 | vf_linkstate.link_state = ivi.linkstate; |
c02db8c6 CW |
1143 | vf = nla_nest_start(skb, IFLA_VF_INFO); |
1144 | if (!vf) { | |
1145 | nla_nest_cancel(skb, vfinfo); | |
1146 | goto nla_put_failure; | |
1147 | } | |
a6574349 DM |
1148 | if (nla_put(skb, IFLA_VF_MAC, sizeof(vf_mac), &vf_mac) || |
1149 | nla_put(skb, IFLA_VF_VLAN, sizeof(vf_vlan), &vf_vlan) || | |
ed616689 SC |
1150 | nla_put(skb, IFLA_VF_RATE, sizeof(vf_rate), |
1151 | &vf_rate) || | |
a6574349 DM |
1152 | nla_put(skb, IFLA_VF_TX_RATE, sizeof(vf_tx_rate), |
1153 | &vf_tx_rate) || | |
1154 | nla_put(skb, IFLA_VF_SPOOFCHK, sizeof(vf_spoofchk), | |
1d8faf48 RE |
1155 | &vf_spoofchk) || |
1156 | nla_put(skb, IFLA_VF_LINK_STATE, sizeof(vf_linkstate), | |
1157 | &vf_linkstate)) | |
a6574349 | 1158 | goto nla_put_failure; |
c02db8c6 | 1159 | nla_nest_end(skb, vf); |
ebc08a6f | 1160 | } |
c02db8c6 | 1161 | nla_nest_end(skb, vfinfo); |
ebc08a6f | 1162 | } |
57b61080 | 1163 | |
c53864fd | 1164 | if (rtnl_port_fill(skb, dev, ext_filter_mask)) |
57b61080 SF |
1165 | goto nla_put_failure; |
1166 | ||
ba7d49b1 | 1167 | if (dev->rtnl_link_ops || rtnl_have_link_slave_info(dev)) { |
38f7b870 PM |
1168 | if (rtnl_link_fill(skb, dev) < 0) |
1169 | goto nla_put_failure; | |
1170 | } | |
1171 | ||
f8ff182c TG |
1172 | if (!(af_spec = nla_nest_start(skb, IFLA_AF_SPEC))) |
1173 | goto nla_put_failure; | |
1174 | ||
1175 | list_for_each_entry(af_ops, &rtnl_af_ops, list) { | |
1176 | if (af_ops->fill_link_af) { | |
1177 | struct nlattr *af; | |
1178 | int err; | |
1179 | ||
1180 | if (!(af = nla_nest_start(skb, af_ops->family))) | |
1181 | goto nla_put_failure; | |
1182 | ||
1183 | err = af_ops->fill_link_af(skb, dev); | |
1184 | ||
1185 | /* | |
1186 | * Caller may return ENODATA to indicate that there | |
1187 | * was no data to be dumped. This is not an error, it | |
1188 | * means we should trim the attribute header and | |
1189 | * continue. | |
1190 | */ | |
1191 | if (err == -ENODATA) | |
1192 | nla_nest_cancel(skb, af); | |
1193 | else if (err < 0) | |
1194 | goto nla_put_failure; | |
1195 | ||
1196 | nla_nest_end(skb, af); | |
1197 | } | |
1198 | } | |
1199 | ||
1200 | nla_nest_end(skb, af_spec); | |
1201 | ||
b60c5115 TG |
1202 | return nlmsg_end(skb, nlh); |
1203 | ||
1204 | nla_put_failure: | |
26932566 PM |
1205 | nlmsg_cancel(skb, nlh); |
1206 | return -EMSGSIZE; | |
1da177e4 LT |
1207 | } |
1208 | ||
f7b12606 | 1209 | static const struct nla_policy ifla_policy[IFLA_MAX+1] = { |
5176f91e | 1210 | [IFLA_IFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ-1 }, |
38f7b870 PM |
1211 | [IFLA_ADDRESS] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN }, |
1212 | [IFLA_BROADCAST] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN }, | |
5176f91e | 1213 | [IFLA_MAP] = { .len = sizeof(struct rtnl_link_ifmap) }, |
da5e0494 | 1214 | [IFLA_MTU] = { .type = NLA_U32 }, |
76e87306 | 1215 | [IFLA_LINK] = { .type = NLA_U32 }, |
fbaec0ea | 1216 | [IFLA_MASTER] = { .type = NLA_U32 }, |
9a57247f | 1217 | [IFLA_CARRIER] = { .type = NLA_U8 }, |
da5e0494 TG |
1218 | [IFLA_TXQLEN] = { .type = NLA_U32 }, |
1219 | [IFLA_WEIGHT] = { .type = NLA_U32 }, | |
1220 | [IFLA_OPERSTATE] = { .type = NLA_U8 }, | |
1221 | [IFLA_LINKMODE] = { .type = NLA_U8 }, | |
76e87306 | 1222 | [IFLA_LINKINFO] = { .type = NLA_NESTED }, |
d8a5ec67 | 1223 | [IFLA_NET_NS_PID] = { .type = NLA_U32 }, |
f0630529 | 1224 | [IFLA_NET_NS_FD] = { .type = NLA_U32 }, |
0b815a1a | 1225 | [IFLA_IFALIAS] = { .type = NLA_STRING, .len = IFALIASZ-1 }, |
c02db8c6 | 1226 | [IFLA_VFINFO_LIST] = {. type = NLA_NESTED }, |
57b61080 SF |
1227 | [IFLA_VF_PORTS] = { .type = NLA_NESTED }, |
1228 | [IFLA_PORT_SELF] = { .type = NLA_NESTED }, | |
f8ff182c | 1229 | [IFLA_AF_SPEC] = { .type = NLA_NESTED }, |
115c9b81 | 1230 | [IFLA_EXT_MASK] = { .type = NLA_U32 }, |
edbc0bb3 | 1231 | [IFLA_PROMISCUITY] = { .type = NLA_U32 }, |
76ff5cc9 JP |
1232 | [IFLA_NUM_TX_QUEUES] = { .type = NLA_U32 }, |
1233 | [IFLA_NUM_RX_QUEUES] = { .type = NLA_U32 }, | |
02637fce | 1234 | [IFLA_PHYS_PORT_ID] = { .type = NLA_BINARY, .len = MAX_PHYS_ITEM_ID_LEN }, |
2d3b479d | 1235 | [IFLA_CARRIER_CHANGES] = { .type = NLA_U32 }, /* ignored */ |
82f28412 | 1236 | [IFLA_PHYS_SWITCH_ID] = { .type = NLA_BINARY, .len = MAX_PHYS_ITEM_ID_LEN }, |
da5e0494 TG |
1237 | }; |
1238 | ||
38f7b870 PM |
1239 | static const struct nla_policy ifla_info_policy[IFLA_INFO_MAX+1] = { |
1240 | [IFLA_INFO_KIND] = { .type = NLA_STRING }, | |
1241 | [IFLA_INFO_DATA] = { .type = NLA_NESTED }, | |
ba7d49b1 JP |
1242 | [IFLA_INFO_SLAVE_KIND] = { .type = NLA_STRING }, |
1243 | [IFLA_INFO_SLAVE_DATA] = { .type = NLA_NESTED }, | |
38f7b870 PM |
1244 | }; |
1245 | ||
c02db8c6 CW |
1246 | static const struct nla_policy ifla_vfinfo_policy[IFLA_VF_INFO_MAX+1] = { |
1247 | [IFLA_VF_INFO] = { .type = NLA_NESTED }, | |
1248 | }; | |
1249 | ||
1250 | static const struct nla_policy ifla_vf_policy[IFLA_VF_MAX+1] = { | |
1251 | [IFLA_VF_MAC] = { .type = NLA_BINARY, | |
1252 | .len = sizeof(struct ifla_vf_mac) }, | |
1253 | [IFLA_VF_VLAN] = { .type = NLA_BINARY, | |
1254 | .len = sizeof(struct ifla_vf_vlan) }, | |
1255 | [IFLA_VF_TX_RATE] = { .type = NLA_BINARY, | |
1256 | .len = sizeof(struct ifla_vf_tx_rate) }, | |
48752f65 GR |
1257 | [IFLA_VF_SPOOFCHK] = { .type = NLA_BINARY, |
1258 | .len = sizeof(struct ifla_vf_spoofchk) }, | |
ed616689 SC |
1259 | [IFLA_VF_RATE] = { .type = NLA_BINARY, |
1260 | .len = sizeof(struct ifla_vf_rate) }, | |
c5b46160 DL |
1261 | [IFLA_VF_LINK_STATE] = { .type = NLA_BINARY, |
1262 | .len = sizeof(struct ifla_vf_link_state) }, | |
c02db8c6 CW |
1263 | }; |
1264 | ||
57b61080 SF |
1265 | static const struct nla_policy ifla_port_policy[IFLA_PORT_MAX+1] = { |
1266 | [IFLA_PORT_VF] = { .type = NLA_U32 }, | |
1267 | [IFLA_PORT_PROFILE] = { .type = NLA_STRING, | |
1268 | .len = PORT_PROFILE_MAX }, | |
1269 | [IFLA_PORT_VSI_TYPE] = { .type = NLA_BINARY, | |
1270 | .len = sizeof(struct ifla_port_vsi)}, | |
1271 | [IFLA_PORT_INSTANCE_UUID] = { .type = NLA_BINARY, | |
1272 | .len = PORT_UUID_MAX }, | |
1273 | [IFLA_PORT_HOST_UUID] = { .type = NLA_STRING, | |
1274 | .len = PORT_UUID_MAX }, | |
1275 | [IFLA_PORT_REQUEST] = { .type = NLA_U8, }, | |
1276 | [IFLA_PORT_RESPONSE] = { .type = NLA_U16, }, | |
1277 | }; | |
1278 | ||
f7b12606 JP |
1279 | static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb) |
1280 | { | |
1281 | struct net *net = sock_net(skb->sk); | |
1282 | int h, s_h; | |
1283 | int idx = 0, s_idx; | |
1284 | struct net_device *dev; | |
1285 | struct hlist_head *head; | |
1286 | struct nlattr *tb[IFLA_MAX+1]; | |
1287 | u32 ext_filter_mask = 0; | |
973462bb | 1288 | int err; |
e5eca6d4 | 1289 | int hdrlen; |
f7b12606 JP |
1290 | |
1291 | s_h = cb->args[0]; | |
1292 | s_idx = cb->args[1]; | |
1293 | ||
1294 | rcu_read_lock(); | |
1295 | cb->seq = net->dev_base_seq; | |
1296 | ||
e5eca6d4 MS |
1297 | /* A hack to preserve kernel<->userspace interface. |
1298 | * The correct header is ifinfomsg. It is consistent with rtnl_getlink. | |
1299 | * However, before Linux v3.9 the code here assumed rtgenmsg and that's | |
1300 | * what iproute2 < v3.9.0 used. | |
1301 | * We can detect the old iproute2. Even including the IFLA_EXT_MASK | |
1302 | * attribute, its netlink message is shorter than struct ifinfomsg. | |
1303 | */ | |
1304 | hdrlen = nlmsg_len(cb->nlh) < sizeof(struct ifinfomsg) ? | |
1305 | sizeof(struct rtgenmsg) : sizeof(struct ifinfomsg); | |
1306 | ||
1307 | if (nlmsg_parse(cb->nlh, hdrlen, tb, IFLA_MAX, ifla_policy) >= 0) { | |
f7b12606 JP |
1308 | |
1309 | if (tb[IFLA_EXT_MASK]) | |
1310 | ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]); | |
1311 | } | |
1312 | ||
1313 | for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) { | |
1314 | idx = 0; | |
1315 | head = &net->dev_index_head[h]; | |
1316 | hlist_for_each_entry_rcu(dev, head, index_hlist) { | |
1317 | if (idx < s_idx) | |
1318 | goto cont; | |
973462bb DG |
1319 | err = rtnl_fill_ifinfo(skb, dev, RTM_NEWLINK, |
1320 | NETLINK_CB(cb->skb).portid, | |
1321 | cb->nlh->nlmsg_seq, 0, | |
1322 | NLM_F_MULTI, | |
1323 | ext_filter_mask); | |
1324 | /* If we ran out of room on the first message, | |
1325 | * we're in trouble | |
1326 | */ | |
1327 | WARN_ON((err == -EMSGSIZE) && (skb->len == 0)); | |
1328 | ||
1329 | if (err <= 0) | |
f7b12606 JP |
1330 | goto out; |
1331 | ||
1332 | nl_dump_check_consistent(cb, nlmsg_hdr(skb)); | |
1333 | cont: | |
1334 | idx++; | |
1335 | } | |
1336 | } | |
1337 | out: | |
1338 | rcu_read_unlock(); | |
1339 | cb->args[1] = idx; | |
1340 | cb->args[0] = h; | |
1341 | ||
1342 | return skb->len; | |
1343 | } | |
1344 | ||
1345 | int rtnl_nla_parse_ifla(struct nlattr **tb, const struct nlattr *head, int len) | |
1346 | { | |
1347 | return nla_parse(tb, IFLA_MAX, head, len, ifla_policy); | |
1348 | } | |
1349 | EXPORT_SYMBOL(rtnl_nla_parse_ifla); | |
1350 | ||
81adee47 EB |
1351 | struct net *rtnl_link_get_net(struct net *src_net, struct nlattr *tb[]) |
1352 | { | |
1353 | struct net *net; | |
1354 | /* Examine the link attributes and figure out which | |
1355 | * network namespace we are talking about. | |
1356 | */ | |
1357 | if (tb[IFLA_NET_NS_PID]) | |
1358 | net = get_net_ns_by_pid(nla_get_u32(tb[IFLA_NET_NS_PID])); | |
f0630529 EB |
1359 | else if (tb[IFLA_NET_NS_FD]) |
1360 | net = get_net_ns_by_fd(nla_get_u32(tb[IFLA_NET_NS_FD])); | |
81adee47 EB |
1361 | else |
1362 | net = get_net(src_net); | |
1363 | return net; | |
1364 | } | |
1365 | EXPORT_SYMBOL(rtnl_link_get_net); | |
1366 | ||
1840bb13 TG |
1367 | static int validate_linkmsg(struct net_device *dev, struct nlattr *tb[]) |
1368 | { | |
1369 | if (dev) { | |
1370 | if (tb[IFLA_ADDRESS] && | |
1371 | nla_len(tb[IFLA_ADDRESS]) < dev->addr_len) | |
1372 | return -EINVAL; | |
1373 | ||
1374 | if (tb[IFLA_BROADCAST] && | |
1375 | nla_len(tb[IFLA_BROADCAST]) < dev->addr_len) | |
1376 | return -EINVAL; | |
1377 | } | |
1378 | ||
cf7afbfe TG |
1379 | if (tb[IFLA_AF_SPEC]) { |
1380 | struct nlattr *af; | |
1381 | int rem, err; | |
1382 | ||
1383 | nla_for_each_nested(af, tb[IFLA_AF_SPEC], rem) { | |
1384 | const struct rtnl_af_ops *af_ops; | |
1385 | ||
1386 | if (!(af_ops = rtnl_af_lookup(nla_type(af)))) | |
1387 | return -EAFNOSUPPORT; | |
1388 | ||
1389 | if (!af_ops->set_link_af) | |
1390 | return -EOPNOTSUPP; | |
1391 | ||
1392 | if (af_ops->validate_link_af) { | |
6d3a9a68 | 1393 | err = af_ops->validate_link_af(dev, af); |
cf7afbfe TG |
1394 | if (err < 0) |
1395 | return err; | |
1396 | } | |
1397 | } | |
1398 | } | |
1399 | ||
1840bb13 TG |
1400 | return 0; |
1401 | } | |
1402 | ||
c02db8c6 CW |
1403 | static int do_setvfinfo(struct net_device *dev, struct nlattr *attr) |
1404 | { | |
1405 | int rem, err = -EINVAL; | |
1406 | struct nlattr *vf; | |
1407 | const struct net_device_ops *ops = dev->netdev_ops; | |
1408 | ||
1409 | nla_for_each_nested(vf, attr, rem) { | |
1410 | switch (nla_type(vf)) { | |
1411 | case IFLA_VF_MAC: { | |
1412 | struct ifla_vf_mac *ivm; | |
1413 | ivm = nla_data(vf); | |
1414 | err = -EOPNOTSUPP; | |
1415 | if (ops->ndo_set_vf_mac) | |
1416 | err = ops->ndo_set_vf_mac(dev, ivm->vf, | |
1417 | ivm->mac); | |
1418 | break; | |
1419 | } | |
1420 | case IFLA_VF_VLAN: { | |
1421 | struct ifla_vf_vlan *ivv; | |
1422 | ivv = nla_data(vf); | |
1423 | err = -EOPNOTSUPP; | |
1424 | if (ops->ndo_set_vf_vlan) | |
1425 | err = ops->ndo_set_vf_vlan(dev, ivv->vf, | |
1426 | ivv->vlan, | |
1427 | ivv->qos); | |
1428 | break; | |
1429 | } | |
1430 | case IFLA_VF_TX_RATE: { | |
1431 | struct ifla_vf_tx_rate *ivt; | |
ed616689 | 1432 | struct ifla_vf_info ivf; |
c02db8c6 CW |
1433 | ivt = nla_data(vf); |
1434 | err = -EOPNOTSUPP; | |
ed616689 SC |
1435 | if (ops->ndo_get_vf_config) |
1436 | err = ops->ndo_get_vf_config(dev, ivt->vf, | |
1437 | &ivf); | |
1438 | if (err) | |
1439 | break; | |
1440 | err = -EOPNOTSUPP; | |
1441 | if (ops->ndo_set_vf_rate) | |
1442 | err = ops->ndo_set_vf_rate(dev, ivt->vf, | |
1443 | ivf.min_tx_rate, | |
1444 | ivt->rate); | |
1445 | break; | |
1446 | } | |
1447 | case IFLA_VF_RATE: { | |
1448 | struct ifla_vf_rate *ivt; | |
1449 | ivt = nla_data(vf); | |
1450 | err = -EOPNOTSUPP; | |
1451 | if (ops->ndo_set_vf_rate) | |
1452 | err = ops->ndo_set_vf_rate(dev, ivt->vf, | |
1453 | ivt->min_tx_rate, | |
1454 | ivt->max_tx_rate); | |
c02db8c6 CW |
1455 | break; |
1456 | } | |
5f8444a3 GR |
1457 | case IFLA_VF_SPOOFCHK: { |
1458 | struct ifla_vf_spoofchk *ivs; | |
1459 | ivs = nla_data(vf); | |
1460 | err = -EOPNOTSUPP; | |
1461 | if (ops->ndo_set_vf_spoofchk) | |
1462 | err = ops->ndo_set_vf_spoofchk(dev, ivs->vf, | |
1463 | ivs->setting); | |
1464 | break; | |
1465 | } | |
1d8faf48 RE |
1466 | case IFLA_VF_LINK_STATE: { |
1467 | struct ifla_vf_link_state *ivl; | |
1468 | ivl = nla_data(vf); | |
1469 | err = -EOPNOTSUPP; | |
1470 | if (ops->ndo_set_vf_link_state) | |
1471 | err = ops->ndo_set_vf_link_state(dev, ivl->vf, | |
1472 | ivl->link_state); | |
1473 | break; | |
1474 | } | |
c02db8c6 CW |
1475 | default: |
1476 | err = -EINVAL; | |
1477 | break; | |
1478 | } | |
1479 | if (err) | |
1480 | break; | |
1481 | } | |
1482 | return err; | |
1483 | } | |
1484 | ||
fbaec0ea JP |
1485 | static int do_set_master(struct net_device *dev, int ifindex) |
1486 | { | |
898e5061 | 1487 | struct net_device *upper_dev = netdev_master_upper_dev_get(dev); |
fbaec0ea JP |
1488 | const struct net_device_ops *ops; |
1489 | int err; | |
1490 | ||
898e5061 JP |
1491 | if (upper_dev) { |
1492 | if (upper_dev->ifindex == ifindex) | |
fbaec0ea | 1493 | return 0; |
898e5061 | 1494 | ops = upper_dev->netdev_ops; |
fbaec0ea | 1495 | if (ops->ndo_del_slave) { |
898e5061 | 1496 | err = ops->ndo_del_slave(upper_dev, dev); |
fbaec0ea JP |
1497 | if (err) |
1498 | return err; | |
1499 | } else { | |
1500 | return -EOPNOTSUPP; | |
1501 | } | |
1502 | } | |
1503 | ||
1504 | if (ifindex) { | |
898e5061 JP |
1505 | upper_dev = __dev_get_by_index(dev_net(dev), ifindex); |
1506 | if (!upper_dev) | |
fbaec0ea | 1507 | return -EINVAL; |
898e5061 | 1508 | ops = upper_dev->netdev_ops; |
fbaec0ea | 1509 | if (ops->ndo_add_slave) { |
898e5061 | 1510 | err = ops->ndo_add_slave(upper_dev, dev); |
fbaec0ea JP |
1511 | if (err) |
1512 | return err; | |
1513 | } else { | |
1514 | return -EOPNOTSUPP; | |
1515 | } | |
1516 | } | |
1517 | return 0; | |
1518 | } | |
1519 | ||
90c325e3 | 1520 | #define DO_SETLINK_MODIFIED 0x01 |
ba998906 ND |
1521 | /* notify flag means notify + modified. */ |
1522 | #define DO_SETLINK_NOTIFY 0x03 | |
90f62cf3 EB |
1523 | static int do_setlink(const struct sk_buff *skb, |
1524 | struct net_device *dev, struct ifinfomsg *ifm, | |
90c325e3 | 1525 | struct nlattr **tb, char *ifname, int status) |
1da177e4 | 1526 | { |
d314774c | 1527 | const struct net_device_ops *ops = dev->netdev_ops; |
0157f60c | 1528 | int err; |
1da177e4 | 1529 | |
f0630529 | 1530 | if (tb[IFLA_NET_NS_PID] || tb[IFLA_NET_NS_FD]) { |
81adee47 | 1531 | struct net *net = rtnl_link_get_net(dev_net(dev), tb); |
d8a5ec67 EB |
1532 | if (IS_ERR(net)) { |
1533 | err = PTR_ERR(net); | |
1534 | goto errout; | |
1535 | } | |
90f62cf3 | 1536 | if (!netlink_ns_capable(skb, net->user_ns, CAP_NET_ADMIN)) { |
e0ebde0e | 1537 | put_net(net); |
b51642f6 EB |
1538 | err = -EPERM; |
1539 | goto errout; | |
1540 | } | |
d8a5ec67 EB |
1541 | err = dev_change_net_namespace(dev, net, ifname); |
1542 | put_net(net); | |
1543 | if (err) | |
1544 | goto errout; | |
90c325e3 | 1545 | status |= DO_SETLINK_MODIFIED; |
d8a5ec67 EB |
1546 | } |
1547 | ||
da5e0494 | 1548 | if (tb[IFLA_MAP]) { |
1da177e4 LT |
1549 | struct rtnl_link_ifmap *u_map; |
1550 | struct ifmap k_map; | |
1551 | ||
d314774c | 1552 | if (!ops->ndo_set_config) { |
1da177e4 | 1553 | err = -EOPNOTSUPP; |
0157f60c | 1554 | goto errout; |
1da177e4 LT |
1555 | } |
1556 | ||
1557 | if (!netif_device_present(dev)) { | |
1558 | err = -ENODEV; | |
0157f60c | 1559 | goto errout; |
1da177e4 | 1560 | } |
1da177e4 | 1561 | |
da5e0494 | 1562 | u_map = nla_data(tb[IFLA_MAP]); |
1da177e4 LT |
1563 | k_map.mem_start = (unsigned long) u_map->mem_start; |
1564 | k_map.mem_end = (unsigned long) u_map->mem_end; | |
1565 | k_map.base_addr = (unsigned short) u_map->base_addr; | |
1566 | k_map.irq = (unsigned char) u_map->irq; | |
1567 | k_map.dma = (unsigned char) u_map->dma; | |
1568 | k_map.port = (unsigned char) u_map->port; | |
1569 | ||
d314774c | 1570 | err = ops->ndo_set_config(dev, &k_map); |
da5e0494 | 1571 | if (err < 0) |
0157f60c | 1572 | goto errout; |
1da177e4 | 1573 | |
ba998906 | 1574 | status |= DO_SETLINK_NOTIFY; |
1da177e4 LT |
1575 | } |
1576 | ||
da5e0494 | 1577 | if (tb[IFLA_ADDRESS]) { |
70f8e78e DM |
1578 | struct sockaddr *sa; |
1579 | int len; | |
1580 | ||
70f8e78e DM |
1581 | len = sizeof(sa_family_t) + dev->addr_len; |
1582 | sa = kmalloc(len, GFP_KERNEL); | |
1583 | if (!sa) { | |
1584 | err = -ENOMEM; | |
0157f60c | 1585 | goto errout; |
70f8e78e DM |
1586 | } |
1587 | sa->sa_family = dev->type; | |
da5e0494 | 1588 | memcpy(sa->sa_data, nla_data(tb[IFLA_ADDRESS]), |
70f8e78e | 1589 | dev->addr_len); |
e7c3273e | 1590 | err = dev_set_mac_address(dev, sa); |
70f8e78e | 1591 | kfree(sa); |
1da177e4 | 1592 | if (err) |
0157f60c | 1593 | goto errout; |
90c325e3 | 1594 | status |= DO_SETLINK_MODIFIED; |
1da177e4 LT |
1595 | } |
1596 | ||
da5e0494 TG |
1597 | if (tb[IFLA_MTU]) { |
1598 | err = dev_set_mtu(dev, nla_get_u32(tb[IFLA_MTU])); | |
1599 | if (err < 0) | |
0157f60c | 1600 | goto errout; |
90c325e3 | 1601 | status |= DO_SETLINK_MODIFIED; |
1da177e4 LT |
1602 | } |
1603 | ||
cbda10fa VD |
1604 | if (tb[IFLA_GROUP]) { |
1605 | dev_set_group(dev, nla_get_u32(tb[IFLA_GROUP])); | |
ba998906 | 1606 | status |= DO_SETLINK_NOTIFY; |
cbda10fa VD |
1607 | } |
1608 | ||
da5e0494 TG |
1609 | /* |
1610 | * Interface selected by interface index but interface | |
1611 | * name provided implies that a name change has been | |
1612 | * requested. | |
1613 | */ | |
51055be8 | 1614 | if (ifm->ifi_index > 0 && ifname[0]) { |
da5e0494 TG |
1615 | err = dev_change_name(dev, ifname); |
1616 | if (err < 0) | |
0157f60c | 1617 | goto errout; |
90c325e3 | 1618 | status |= DO_SETLINK_MODIFIED; |
1da177e4 LT |
1619 | } |
1620 | ||
0b815a1a SH |
1621 | if (tb[IFLA_IFALIAS]) { |
1622 | err = dev_set_alias(dev, nla_data(tb[IFLA_IFALIAS]), | |
1623 | nla_len(tb[IFLA_IFALIAS])); | |
1624 | if (err < 0) | |
1625 | goto errout; | |
ba998906 | 1626 | status |= DO_SETLINK_NOTIFY; |
0b815a1a SH |
1627 | } |
1628 | ||
da5e0494 TG |
1629 | if (tb[IFLA_BROADCAST]) { |
1630 | nla_memcpy(dev->broadcast, tb[IFLA_BROADCAST], dev->addr_len); | |
e7c3273e | 1631 | call_netdevice_notifiers(NETDEV_CHANGEADDR, dev); |
1da177e4 LT |
1632 | } |
1633 | ||
83b496e9 | 1634 | if (ifm->ifi_flags || ifm->ifi_change) { |
3729d502 | 1635 | err = dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm)); |
5f9021cf JB |
1636 | if (err < 0) |
1637 | goto errout; | |
83b496e9 | 1638 | } |
1da177e4 | 1639 | |
fbaec0ea JP |
1640 | if (tb[IFLA_MASTER]) { |
1641 | err = do_set_master(dev, nla_get_u32(tb[IFLA_MASTER])); | |
1642 | if (err) | |
1643 | goto errout; | |
90c325e3 | 1644 | status |= DO_SETLINK_MODIFIED; |
fbaec0ea JP |
1645 | } |
1646 | ||
9a57247f JP |
1647 | if (tb[IFLA_CARRIER]) { |
1648 | err = dev_change_carrier(dev, nla_get_u8(tb[IFLA_CARRIER])); | |
1649 | if (err) | |
1650 | goto errout; | |
90c325e3 | 1651 | status |= DO_SETLINK_MODIFIED; |
9a57247f JP |
1652 | } |
1653 | ||
5d1180fc ND |
1654 | if (tb[IFLA_TXQLEN]) { |
1655 | unsigned long value = nla_get_u32(tb[IFLA_TXQLEN]); | |
1656 | ||
1657 | if (dev->tx_queue_len ^ value) | |
ba998906 | 1658 | status |= DO_SETLINK_NOTIFY; |
5d1180fc ND |
1659 | |
1660 | dev->tx_queue_len = value; | |
1661 | } | |
b00055aa | 1662 | |
da5e0494 | 1663 | if (tb[IFLA_OPERSTATE]) |
93b2d4a2 | 1664 | set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE])); |
b00055aa | 1665 | |
da5e0494 | 1666 | if (tb[IFLA_LINKMODE]) { |
1889b0e7 ND |
1667 | unsigned char value = nla_get_u8(tb[IFLA_LINKMODE]); |
1668 | ||
93b2d4a2 | 1669 | write_lock_bh(&dev_base_lock); |
1889b0e7 | 1670 | if (dev->link_mode ^ value) |
ba998906 | 1671 | status |= DO_SETLINK_NOTIFY; |
1889b0e7 | 1672 | dev->link_mode = value; |
93b2d4a2 | 1673 | write_unlock_bh(&dev_base_lock); |
b00055aa SR |
1674 | } |
1675 | ||
c02db8c6 CW |
1676 | if (tb[IFLA_VFINFO_LIST]) { |
1677 | struct nlattr *attr; | |
1678 | int rem; | |
1679 | nla_for_each_nested(attr, tb[IFLA_VFINFO_LIST], rem) { | |
253683bb DH |
1680 | if (nla_type(attr) != IFLA_VF_INFO) { |
1681 | err = -EINVAL; | |
c02db8c6 | 1682 | goto errout; |
253683bb | 1683 | } |
c02db8c6 CW |
1684 | err = do_setvfinfo(dev, attr); |
1685 | if (err < 0) | |
1686 | goto errout; | |
ba998906 | 1687 | status |= DO_SETLINK_NOTIFY; |
c02db8c6 | 1688 | } |
ebc08a6f | 1689 | } |
1da177e4 LT |
1690 | err = 0; |
1691 | ||
57b61080 SF |
1692 | if (tb[IFLA_VF_PORTS]) { |
1693 | struct nlattr *port[IFLA_PORT_MAX+1]; | |
1694 | struct nlattr *attr; | |
1695 | int vf; | |
1696 | int rem; | |
1697 | ||
1698 | err = -EOPNOTSUPP; | |
1699 | if (!ops->ndo_set_vf_port) | |
1700 | goto errout; | |
1701 | ||
1702 | nla_for_each_nested(attr, tb[IFLA_VF_PORTS], rem) { | |
1703 | if (nla_type(attr) != IFLA_VF_PORT) | |
1704 | continue; | |
1705 | err = nla_parse_nested(port, IFLA_PORT_MAX, | |
1706 | attr, ifla_port_policy); | |
1707 | if (err < 0) | |
1708 | goto errout; | |
1709 | if (!port[IFLA_PORT_VF]) { | |
1710 | err = -EOPNOTSUPP; | |
1711 | goto errout; | |
1712 | } | |
1713 | vf = nla_get_u32(port[IFLA_PORT_VF]); | |
1714 | err = ops->ndo_set_vf_port(dev, vf, port); | |
1715 | if (err < 0) | |
1716 | goto errout; | |
ba998906 | 1717 | status |= DO_SETLINK_NOTIFY; |
57b61080 SF |
1718 | } |
1719 | } | |
1720 | err = 0; | |
1721 | ||
1722 | if (tb[IFLA_PORT_SELF]) { | |
1723 | struct nlattr *port[IFLA_PORT_MAX+1]; | |
1724 | ||
1725 | err = nla_parse_nested(port, IFLA_PORT_MAX, | |
1726 | tb[IFLA_PORT_SELF], ifla_port_policy); | |
1727 | if (err < 0) | |
1728 | goto errout; | |
1729 | ||
1730 | err = -EOPNOTSUPP; | |
1731 | if (ops->ndo_set_vf_port) | |
1732 | err = ops->ndo_set_vf_port(dev, PORT_SELF_VF, port); | |
1733 | if (err < 0) | |
1734 | goto errout; | |
ba998906 | 1735 | status |= DO_SETLINK_NOTIFY; |
57b61080 | 1736 | } |
f8ff182c TG |
1737 | |
1738 | if (tb[IFLA_AF_SPEC]) { | |
1739 | struct nlattr *af; | |
1740 | int rem; | |
1741 | ||
1742 | nla_for_each_nested(af, tb[IFLA_AF_SPEC], rem) { | |
1743 | const struct rtnl_af_ops *af_ops; | |
1744 | ||
1745 | if (!(af_ops = rtnl_af_lookup(nla_type(af)))) | |
cf7afbfe | 1746 | BUG(); |
f8ff182c | 1747 | |
cf7afbfe | 1748 | err = af_ops->set_link_af(dev, af); |
f8ff182c TG |
1749 | if (err < 0) |
1750 | goto errout; | |
1751 | ||
ba998906 | 1752 | status |= DO_SETLINK_NOTIFY; |
f8ff182c TG |
1753 | } |
1754 | } | |
57b61080 SF |
1755 | err = 0; |
1756 | ||
0157f60c | 1757 | errout: |
ba998906 ND |
1758 | if (status & DO_SETLINK_MODIFIED) { |
1759 | if (status & DO_SETLINK_NOTIFY) | |
1760 | netdev_state_change(dev); | |
1761 | ||
1762 | if (err < 0) | |
1763 | 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", | |
1764 | dev->name); | |
1765 | } | |
da5e0494 | 1766 | |
0157f60c PM |
1767 | return err; |
1768 | } | |
1da177e4 | 1769 | |
661d2967 | 1770 | static int rtnl_setlink(struct sk_buff *skb, struct nlmsghdr *nlh) |
0157f60c | 1771 | { |
3b1e0a65 | 1772 | struct net *net = sock_net(skb->sk); |
0157f60c PM |
1773 | struct ifinfomsg *ifm; |
1774 | struct net_device *dev; | |
1775 | int err; | |
1776 | struct nlattr *tb[IFLA_MAX+1]; | |
1777 | char ifname[IFNAMSIZ]; | |
1778 | ||
1779 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); | |
1780 | if (err < 0) | |
1781 | goto errout; | |
1782 | ||
1783 | if (tb[IFLA_IFNAME]) | |
1784 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
1785 | else | |
1786 | ifname[0] = '\0'; | |
1787 | ||
1788 | err = -EINVAL; | |
1789 | ifm = nlmsg_data(nlh); | |
1790 | if (ifm->ifi_index > 0) | |
a3d12891 | 1791 | dev = __dev_get_by_index(net, ifm->ifi_index); |
0157f60c | 1792 | else if (tb[IFLA_IFNAME]) |
a3d12891 | 1793 | dev = __dev_get_by_name(net, ifname); |
0157f60c PM |
1794 | else |
1795 | goto errout; | |
1796 | ||
1797 | if (dev == NULL) { | |
1798 | err = -ENODEV; | |
1799 | goto errout; | |
1800 | } | |
1801 | ||
e0d087af ED |
1802 | err = validate_linkmsg(dev, tb); |
1803 | if (err < 0) | |
a3d12891 | 1804 | goto errout; |
0157f60c | 1805 | |
90f62cf3 | 1806 | err = do_setlink(skb, dev, ifm, tb, ifname, 0); |
da5e0494 | 1807 | errout: |
1da177e4 LT |
1808 | return err; |
1809 | } | |
1810 | ||
661d2967 | 1811 | static int rtnl_dellink(struct sk_buff *skb, struct nlmsghdr *nlh) |
38f7b870 | 1812 | { |
3b1e0a65 | 1813 | struct net *net = sock_net(skb->sk); |
38f7b870 PM |
1814 | const struct rtnl_link_ops *ops; |
1815 | struct net_device *dev; | |
1816 | struct ifinfomsg *ifm; | |
1817 | char ifname[IFNAMSIZ]; | |
1818 | struct nlattr *tb[IFLA_MAX+1]; | |
1819 | int err; | |
226bd341 | 1820 | LIST_HEAD(list_kill); |
38f7b870 PM |
1821 | |
1822 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); | |
1823 | if (err < 0) | |
1824 | return err; | |
1825 | ||
1826 | if (tb[IFLA_IFNAME]) | |
1827 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
1828 | ||
1829 | ifm = nlmsg_data(nlh); | |
1830 | if (ifm->ifi_index > 0) | |
881d966b | 1831 | dev = __dev_get_by_index(net, ifm->ifi_index); |
38f7b870 | 1832 | else if (tb[IFLA_IFNAME]) |
881d966b | 1833 | dev = __dev_get_by_name(net, ifname); |
38f7b870 PM |
1834 | else |
1835 | return -EINVAL; | |
1836 | ||
1837 | if (!dev) | |
1838 | return -ENODEV; | |
1839 | ||
1840 | ops = dev->rtnl_link_ops; | |
b0ab2fab | 1841 | if (!ops || !ops->dellink) |
38f7b870 PM |
1842 | return -EOPNOTSUPP; |
1843 | ||
226bd341 ED |
1844 | ops->dellink(dev, &list_kill); |
1845 | unregister_netdevice_many(&list_kill); | |
38f7b870 PM |
1846 | return 0; |
1847 | } | |
1848 | ||
3729d502 PM |
1849 | int rtnl_configure_link(struct net_device *dev, const struct ifinfomsg *ifm) |
1850 | { | |
1851 | unsigned int old_flags; | |
1852 | int err; | |
1853 | ||
1854 | old_flags = dev->flags; | |
1855 | if (ifm && (ifm->ifi_flags || ifm->ifi_change)) { | |
1856 | err = __dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm)); | |
1857 | if (err < 0) | |
1858 | return err; | |
1859 | } | |
1860 | ||
1861 | dev->rtnl_link_state = RTNL_LINK_INITIALIZED; | |
3729d502 | 1862 | |
a528c219 | 1863 | __dev_notify_flags(dev, old_flags, ~0U); |
3729d502 PM |
1864 | return 0; |
1865 | } | |
1866 | EXPORT_SYMBOL(rtnl_configure_link); | |
1867 | ||
c0713563 | 1868 | struct net_device *rtnl_create_link(struct net *net, |
5517750f TG |
1869 | char *ifname, unsigned char name_assign_type, |
1870 | const struct rtnl_link_ops *ops, struct nlattr *tb[]) | |
e7199288 PE |
1871 | { |
1872 | int err; | |
1873 | struct net_device *dev; | |
d40156aa JP |
1874 | unsigned int num_tx_queues = 1; |
1875 | unsigned int num_rx_queues = 1; | |
e7199288 | 1876 | |
76ff5cc9 JP |
1877 | if (tb[IFLA_NUM_TX_QUEUES]) |
1878 | num_tx_queues = nla_get_u32(tb[IFLA_NUM_TX_QUEUES]); | |
1879 | else if (ops->get_num_tx_queues) | |
d40156aa | 1880 | num_tx_queues = ops->get_num_tx_queues(); |
76ff5cc9 JP |
1881 | |
1882 | if (tb[IFLA_NUM_RX_QUEUES]) | |
1883 | num_rx_queues = nla_get_u32(tb[IFLA_NUM_RX_QUEUES]); | |
1884 | else if (ops->get_num_rx_queues) | |
d40156aa | 1885 | num_rx_queues = ops->get_num_rx_queues(); |
efacb309 | 1886 | |
e7199288 | 1887 | err = -ENOMEM; |
5517750f | 1888 | dev = alloc_netdev_mqs(ops->priv_size, ifname, name_assign_type, |
c835a677 | 1889 | ops->setup, num_tx_queues, num_rx_queues); |
e7199288 PE |
1890 | if (!dev) |
1891 | goto err; | |
1892 | ||
81adee47 EB |
1893 | dev_net_set(dev, net); |
1894 | dev->rtnl_link_ops = ops; | |
3729d502 | 1895 | dev->rtnl_link_state = RTNL_LINK_INITIALIZING; |
81adee47 | 1896 | |
e7199288 PE |
1897 | if (tb[IFLA_MTU]) |
1898 | dev->mtu = nla_get_u32(tb[IFLA_MTU]); | |
2afb9b53 | 1899 | if (tb[IFLA_ADDRESS]) { |
e7199288 PE |
1900 | memcpy(dev->dev_addr, nla_data(tb[IFLA_ADDRESS]), |
1901 | nla_len(tb[IFLA_ADDRESS])); | |
2afb9b53 JP |
1902 | dev->addr_assign_type = NET_ADDR_SET; |
1903 | } | |
e7199288 PE |
1904 | if (tb[IFLA_BROADCAST]) |
1905 | memcpy(dev->broadcast, nla_data(tb[IFLA_BROADCAST]), | |
1906 | nla_len(tb[IFLA_BROADCAST])); | |
1907 | if (tb[IFLA_TXQLEN]) | |
1908 | dev->tx_queue_len = nla_get_u32(tb[IFLA_TXQLEN]); | |
1909 | if (tb[IFLA_OPERSTATE]) | |
93b2d4a2 | 1910 | set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE])); |
e7199288 PE |
1911 | if (tb[IFLA_LINKMODE]) |
1912 | dev->link_mode = nla_get_u8(tb[IFLA_LINKMODE]); | |
ffa934f1 PM |
1913 | if (tb[IFLA_GROUP]) |
1914 | dev_set_group(dev, nla_get_u32(tb[IFLA_GROUP])); | |
e7199288 PE |
1915 | |
1916 | return dev; | |
1917 | ||
e7199288 PE |
1918 | err: |
1919 | return ERR_PTR(err); | |
1920 | } | |
e0d087af | 1921 | EXPORT_SYMBOL(rtnl_create_link); |
e7199288 | 1922 | |
90f62cf3 EB |
1923 | static int rtnl_group_changelink(const struct sk_buff *skb, |
1924 | struct net *net, int group, | |
e7ed828f VD |
1925 | struct ifinfomsg *ifm, |
1926 | struct nlattr **tb) | |
1927 | { | |
1928 | struct net_device *dev; | |
1929 | int err; | |
1930 | ||
1931 | for_each_netdev(net, dev) { | |
1932 | if (dev->group == group) { | |
90f62cf3 | 1933 | err = do_setlink(skb, dev, ifm, tb, NULL, 0); |
e7ed828f VD |
1934 | if (err < 0) |
1935 | return err; | |
1936 | } | |
1937 | } | |
1938 | ||
1939 | return 0; | |
1940 | } | |
1941 | ||
661d2967 | 1942 | static int rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh) |
38f7b870 | 1943 | { |
3b1e0a65 | 1944 | struct net *net = sock_net(skb->sk); |
38f7b870 | 1945 | const struct rtnl_link_ops *ops; |
ba7d49b1 | 1946 | const struct rtnl_link_ops *m_ops = NULL; |
38f7b870 | 1947 | struct net_device *dev; |
ba7d49b1 | 1948 | struct net_device *master_dev = NULL; |
38f7b870 PM |
1949 | struct ifinfomsg *ifm; |
1950 | char kind[MODULE_NAME_LEN]; | |
1951 | char ifname[IFNAMSIZ]; | |
1952 | struct nlattr *tb[IFLA_MAX+1]; | |
1953 | struct nlattr *linkinfo[IFLA_INFO_MAX+1]; | |
5517750f | 1954 | unsigned char name_assign_type = NET_NAME_USER; |
38f7b870 PM |
1955 | int err; |
1956 | ||
95a5afca | 1957 | #ifdef CONFIG_MODULES |
38f7b870 | 1958 | replay: |
8072f085 | 1959 | #endif |
38f7b870 PM |
1960 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); |
1961 | if (err < 0) | |
1962 | return err; | |
1963 | ||
1964 | if (tb[IFLA_IFNAME]) | |
1965 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
1966 | else | |
1967 | ifname[0] = '\0'; | |
1968 | ||
1969 | ifm = nlmsg_data(nlh); | |
1970 | if (ifm->ifi_index > 0) | |
881d966b | 1971 | dev = __dev_get_by_index(net, ifm->ifi_index); |
e7ed828f VD |
1972 | else { |
1973 | if (ifname[0]) | |
1974 | dev = __dev_get_by_name(net, ifname); | |
e7ed828f VD |
1975 | else |
1976 | dev = NULL; | |
1977 | } | |
38f7b870 | 1978 | |
ba7d49b1 JP |
1979 | if (dev) { |
1980 | master_dev = netdev_master_upper_dev_get(dev); | |
1981 | if (master_dev) | |
1982 | m_ops = master_dev->rtnl_link_ops; | |
1983 | } | |
1984 | ||
e0d087af ED |
1985 | err = validate_linkmsg(dev, tb); |
1986 | if (err < 0) | |
1840bb13 TG |
1987 | return err; |
1988 | ||
38f7b870 PM |
1989 | if (tb[IFLA_LINKINFO]) { |
1990 | err = nla_parse_nested(linkinfo, IFLA_INFO_MAX, | |
1991 | tb[IFLA_LINKINFO], ifla_info_policy); | |
1992 | if (err < 0) | |
1993 | return err; | |
1994 | } else | |
1995 | memset(linkinfo, 0, sizeof(linkinfo)); | |
1996 | ||
1997 | if (linkinfo[IFLA_INFO_KIND]) { | |
1998 | nla_strlcpy(kind, linkinfo[IFLA_INFO_KIND], sizeof(kind)); | |
1999 | ops = rtnl_link_ops_get(kind); | |
2000 | } else { | |
2001 | kind[0] = '\0'; | |
2002 | ops = NULL; | |
2003 | } | |
2004 | ||
2005 | if (1) { | |
ba7d49b1 JP |
2006 | struct nlattr *attr[ops ? ops->maxtype + 1 : 0]; |
2007 | struct nlattr *slave_attr[m_ops ? m_ops->slave_maxtype + 1 : 0]; | |
2008 | struct nlattr **data = NULL; | |
2009 | struct nlattr **slave_data = NULL; | |
81adee47 | 2010 | struct net *dest_net; |
38f7b870 PM |
2011 | |
2012 | if (ops) { | |
2013 | if (ops->maxtype && linkinfo[IFLA_INFO_DATA]) { | |
2014 | err = nla_parse_nested(attr, ops->maxtype, | |
2015 | linkinfo[IFLA_INFO_DATA], | |
2016 | ops->policy); | |
2017 | if (err < 0) | |
2018 | return err; | |
2019 | data = attr; | |
2020 | } | |
2021 | if (ops->validate) { | |
2022 | err = ops->validate(tb, data); | |
2023 | if (err < 0) | |
2024 | return err; | |
2025 | } | |
2026 | } | |
2027 | ||
ba7d49b1 JP |
2028 | if (m_ops) { |
2029 | if (m_ops->slave_maxtype && | |
2030 | linkinfo[IFLA_INFO_SLAVE_DATA]) { | |
2031 | err = nla_parse_nested(slave_attr, | |
2032 | m_ops->slave_maxtype, | |
2033 | linkinfo[IFLA_INFO_SLAVE_DATA], | |
2034 | m_ops->slave_policy); | |
2035 | if (err < 0) | |
2036 | return err; | |
2037 | slave_data = slave_attr; | |
2038 | } | |
2039 | if (m_ops->slave_validate) { | |
2040 | err = m_ops->slave_validate(tb, slave_data); | |
2041 | if (err < 0) | |
2042 | return err; | |
2043 | } | |
2044 | } | |
2045 | ||
38f7b870 | 2046 | if (dev) { |
90c325e3 | 2047 | int status = 0; |
38f7b870 PM |
2048 | |
2049 | if (nlh->nlmsg_flags & NLM_F_EXCL) | |
2050 | return -EEXIST; | |
2051 | if (nlh->nlmsg_flags & NLM_F_REPLACE) | |
2052 | return -EOPNOTSUPP; | |
2053 | ||
2054 | if (linkinfo[IFLA_INFO_DATA]) { | |
2055 | if (!ops || ops != dev->rtnl_link_ops || | |
2056 | !ops->changelink) | |
2057 | return -EOPNOTSUPP; | |
2058 | ||
2059 | err = ops->changelink(dev, tb, data); | |
2060 | if (err < 0) | |
2061 | return err; | |
ba998906 | 2062 | status |= DO_SETLINK_NOTIFY; |
38f7b870 PM |
2063 | } |
2064 | ||
ba7d49b1 JP |
2065 | if (linkinfo[IFLA_INFO_SLAVE_DATA]) { |
2066 | if (!m_ops || !m_ops->slave_changelink) | |
2067 | return -EOPNOTSUPP; | |
2068 | ||
2069 | err = m_ops->slave_changelink(master_dev, dev, | |
2070 | tb, slave_data); | |
2071 | if (err < 0) | |
2072 | return err; | |
ba998906 | 2073 | status |= DO_SETLINK_NOTIFY; |
ba7d49b1 JP |
2074 | } |
2075 | ||
90c325e3 | 2076 | return do_setlink(skb, dev, ifm, tb, ifname, status); |
38f7b870 PM |
2077 | } |
2078 | ||
ffa934f1 PM |
2079 | if (!(nlh->nlmsg_flags & NLM_F_CREATE)) { |
2080 | if (ifm->ifi_index == 0 && tb[IFLA_GROUP]) | |
90f62cf3 | 2081 | return rtnl_group_changelink(skb, net, |
ffa934f1 PM |
2082 | nla_get_u32(tb[IFLA_GROUP]), |
2083 | ifm, tb); | |
38f7b870 | 2084 | return -ENODEV; |
ffa934f1 | 2085 | } |
38f7b870 | 2086 | |
0e06877c | 2087 | if (tb[IFLA_MAP] || tb[IFLA_MASTER] || tb[IFLA_PROTINFO]) |
38f7b870 PM |
2088 | return -EOPNOTSUPP; |
2089 | ||
2090 | if (!ops) { | |
95a5afca | 2091 | #ifdef CONFIG_MODULES |
38f7b870 PM |
2092 | if (kind[0]) { |
2093 | __rtnl_unlock(); | |
2094 | request_module("rtnl-link-%s", kind); | |
2095 | rtnl_lock(); | |
2096 | ops = rtnl_link_ops_get(kind); | |
2097 | if (ops) | |
2098 | goto replay; | |
2099 | } | |
2100 | #endif | |
2101 | return -EOPNOTSUPP; | |
2102 | } | |
2103 | ||
b0ab2fab JP |
2104 | if (!ops->setup) |
2105 | return -EOPNOTSUPP; | |
2106 | ||
5517750f | 2107 | if (!ifname[0]) { |
38f7b870 | 2108 | snprintf(ifname, IFNAMSIZ, "%s%%d", ops->kind); |
5517750f TG |
2109 | name_assign_type = NET_NAME_ENUM; |
2110 | } | |
e7199288 | 2111 | |
81adee47 | 2112 | dest_net = rtnl_link_get_net(net, tb); |
13ad1774 EB |
2113 | if (IS_ERR(dest_net)) |
2114 | return PTR_ERR(dest_net); | |
2115 | ||
5517750f | 2116 | dev = rtnl_create_link(dest_net, ifname, name_assign_type, ops, tb); |
9c7dafbf | 2117 | if (IS_ERR(dev)) { |
e7199288 | 2118 | err = PTR_ERR(dev); |
9c7dafbf PE |
2119 | goto out; |
2120 | } | |
2121 | ||
2122 | dev->ifindex = ifm->ifi_index; | |
2123 | ||
0e0eee24 | 2124 | if (ops->newlink) { |
81adee47 | 2125 | err = ops->newlink(net, dev, tb, data); |
0e0eee24 | 2126 | /* Drivers should call free_netdev() in ->destructor |
e51fb152 CW |
2127 | * and unregister it on failure after registration |
2128 | * so that device could be finally freed in rtnl_unlock. | |
0e0eee24 | 2129 | */ |
e51fb152 CW |
2130 | if (err < 0) { |
2131 | /* If device is not registered at all, free it now */ | |
2132 | if (dev->reg_state == NETREG_UNINITIALIZED) | |
2133 | free_netdev(dev); | |
0e0eee24 | 2134 | goto out; |
e51fb152 | 2135 | } |
0e0eee24 | 2136 | } else { |
2d85cba2 | 2137 | err = register_netdevice(dev); |
0e0eee24 CW |
2138 | if (err < 0) { |
2139 | free_netdev(dev); | |
2140 | goto out; | |
2141 | } | |
fce9b9be | 2142 | } |
3729d502 PM |
2143 | err = rtnl_configure_link(dev, ifm); |
2144 | if (err < 0) | |
2145 | unregister_netdevice(dev); | |
2146 | out: | |
81adee47 | 2147 | put_net(dest_net); |
38f7b870 PM |
2148 | return err; |
2149 | } | |
2150 | } | |
2151 | ||
661d2967 | 2152 | static int rtnl_getlink(struct sk_buff *skb, struct nlmsghdr* nlh) |
711e2c33 | 2153 | { |
3b1e0a65 | 2154 | struct net *net = sock_net(skb->sk); |
b60c5115 | 2155 | struct ifinfomsg *ifm; |
a3d12891 | 2156 | char ifname[IFNAMSIZ]; |
b60c5115 TG |
2157 | struct nlattr *tb[IFLA_MAX+1]; |
2158 | struct net_device *dev = NULL; | |
2159 | struct sk_buff *nskb; | |
339bf98f | 2160 | int err; |
115c9b81 | 2161 | u32 ext_filter_mask = 0; |
711e2c33 | 2162 | |
b60c5115 TG |
2163 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); |
2164 | if (err < 0) | |
9918f230 | 2165 | return err; |
b60c5115 | 2166 | |
a3d12891 ED |
2167 | if (tb[IFLA_IFNAME]) |
2168 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
2169 | ||
115c9b81 GR |
2170 | if (tb[IFLA_EXT_MASK]) |
2171 | ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]); | |
2172 | ||
b60c5115 | 2173 | ifm = nlmsg_data(nlh); |
a3d12891 ED |
2174 | if (ifm->ifi_index > 0) |
2175 | dev = __dev_get_by_index(net, ifm->ifi_index); | |
2176 | else if (tb[IFLA_IFNAME]) | |
2177 | dev = __dev_get_by_name(net, ifname); | |
2178 | else | |
711e2c33 | 2179 | return -EINVAL; |
711e2c33 | 2180 | |
a3d12891 ED |
2181 | if (dev == NULL) |
2182 | return -ENODEV; | |
2183 | ||
115c9b81 | 2184 | nskb = nlmsg_new(if_nlmsg_size(dev, ext_filter_mask), GFP_KERNEL); |
a3d12891 ED |
2185 | if (nskb == NULL) |
2186 | return -ENOBUFS; | |
b60c5115 | 2187 | |
15e47304 | 2188 | err = rtnl_fill_ifinfo(nskb, dev, RTM_NEWLINK, NETLINK_CB(skb).portid, |
115c9b81 | 2189 | nlh->nlmsg_seq, 0, 0, ext_filter_mask); |
26932566 PM |
2190 | if (err < 0) { |
2191 | /* -EMSGSIZE implies BUG in if_nlmsg_size */ | |
2192 | WARN_ON(err == -EMSGSIZE); | |
2193 | kfree_skb(nskb); | |
a3d12891 | 2194 | } else |
15e47304 | 2195 | err = rtnl_unicast(nskb, net, NETLINK_CB(skb).portid); |
711e2c33 | 2196 | |
b60c5115 | 2197 | return err; |
711e2c33 | 2198 | } |
711e2c33 | 2199 | |
115c9b81 | 2200 | static u16 rtnl_calcit(struct sk_buff *skb, struct nlmsghdr *nlh) |
c7ac8679 | 2201 | { |
115c9b81 GR |
2202 | struct net *net = sock_net(skb->sk); |
2203 | struct net_device *dev; | |
2204 | struct nlattr *tb[IFLA_MAX+1]; | |
2205 | u32 ext_filter_mask = 0; | |
2206 | u16 min_ifinfo_dump_size = 0; | |
e5eca6d4 MS |
2207 | int hdrlen; |
2208 | ||
2209 | /* Same kernel<->userspace interface hack as in rtnl_dump_ifinfo. */ | |
2210 | hdrlen = nlmsg_len(nlh) < sizeof(struct ifinfomsg) ? | |
2211 | sizeof(struct rtgenmsg) : sizeof(struct ifinfomsg); | |
115c9b81 | 2212 | |
e5eca6d4 | 2213 | if (nlmsg_parse(nlh, hdrlen, tb, IFLA_MAX, ifla_policy) >= 0) { |
a4b64fbe ED |
2214 | if (tb[IFLA_EXT_MASK]) |
2215 | ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]); | |
2216 | } | |
115c9b81 GR |
2217 | |
2218 | if (!ext_filter_mask) | |
2219 | return NLMSG_GOODSIZE; | |
2220 | /* | |
2221 | * traverse the list of net devices and compute the minimum | |
2222 | * buffer size based upon the filter mask. | |
2223 | */ | |
2224 | list_for_each_entry(dev, &net->dev_base_head, dev_list) { | |
2225 | min_ifinfo_dump_size = max_t(u16, min_ifinfo_dump_size, | |
2226 | if_nlmsg_size(dev, | |
2227 | ext_filter_mask)); | |
2228 | } | |
2229 | ||
c7ac8679 GR |
2230 | return min_ifinfo_dump_size; |
2231 | } | |
2232 | ||
42bad1da | 2233 | static int rtnl_dump_all(struct sk_buff *skb, struct netlink_callback *cb) |
1da177e4 LT |
2234 | { |
2235 | int idx; | |
2236 | int s_idx = cb->family; | |
2237 | ||
2238 | if (s_idx == 0) | |
2239 | s_idx = 1; | |
25239cee | 2240 | for (idx = 1; idx <= RTNL_FAMILY_MAX; idx++) { |
1da177e4 LT |
2241 | int type = cb->nlh->nlmsg_type-RTM_BASE; |
2242 | if (idx < s_idx || idx == PF_PACKET) | |
2243 | continue; | |
e2849863 TG |
2244 | if (rtnl_msg_handlers[idx] == NULL || |
2245 | rtnl_msg_handlers[idx][type].dumpit == NULL) | |
1da177e4 | 2246 | continue; |
0465277f | 2247 | if (idx > s_idx) { |
1da177e4 | 2248 | memset(&cb->args[0], 0, sizeof(cb->args)); |
0465277f ND |
2249 | cb->prev_seq = 0; |
2250 | cb->seq = 0; | |
2251 | } | |
e2849863 | 2252 | if (rtnl_msg_handlers[idx][type].dumpit(skb, cb)) |
1da177e4 LT |
2253 | break; |
2254 | } | |
2255 | cb->family = idx; | |
2256 | ||
2257 | return skb->len; | |
2258 | } | |
2259 | ||
395eea6c MB |
2260 | struct sk_buff *rtmsg_ifinfo_build_skb(int type, struct net_device *dev, |
2261 | unsigned int change, gfp_t flags) | |
1da177e4 | 2262 | { |
c346dca1 | 2263 | struct net *net = dev_net(dev); |
1da177e4 | 2264 | struct sk_buff *skb; |
0ec6d3f4 | 2265 | int err = -ENOBUFS; |
c7ac8679 | 2266 | size_t if_info_size; |
1da177e4 | 2267 | |
7f294054 | 2268 | skb = nlmsg_new((if_info_size = if_nlmsg_size(dev, 0)), flags); |
0ec6d3f4 TG |
2269 | if (skb == NULL) |
2270 | goto errout; | |
1da177e4 | 2271 | |
115c9b81 | 2272 | err = rtnl_fill_ifinfo(skb, dev, type, 0, 0, change, 0, 0); |
26932566 PM |
2273 | if (err < 0) { |
2274 | /* -EMSGSIZE implies BUG in if_nlmsg_size() */ | |
2275 | WARN_ON(err == -EMSGSIZE); | |
2276 | kfree_skb(skb); | |
2277 | goto errout; | |
2278 | } | |
395eea6c | 2279 | return skb; |
0ec6d3f4 TG |
2280 | errout: |
2281 | if (err < 0) | |
4b3da706 | 2282 | rtnl_set_sk_err(net, RTNLGRP_LINK, err); |
395eea6c MB |
2283 | return NULL; |
2284 | } | |
2285 | ||
2286 | void rtmsg_ifinfo_send(struct sk_buff *skb, struct net_device *dev, gfp_t flags) | |
2287 | { | |
2288 | struct net *net = dev_net(dev); | |
2289 | ||
2290 | rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, flags); | |
2291 | } | |
2292 | ||
2293 | void rtmsg_ifinfo(int type, struct net_device *dev, unsigned int change, | |
2294 | gfp_t flags) | |
2295 | { | |
2296 | struct sk_buff *skb; | |
2297 | ||
2298 | skb = rtmsg_ifinfo_build_skb(type, dev, change, flags); | |
2299 | if (skb) | |
2300 | rtmsg_ifinfo_send(skb, dev, flags); | |
1da177e4 | 2301 | } |
471cb5a3 | 2302 | EXPORT_SYMBOL(rtmsg_ifinfo); |
1da177e4 | 2303 | |
d83b0603 JF |
2304 | static int nlmsg_populate_fdb_fill(struct sk_buff *skb, |
2305 | struct net_device *dev, | |
2306 | u8 *addr, u32 pid, u32 seq, | |
1c104a6b ND |
2307 | int type, unsigned int flags, |
2308 | int nlflags) | |
d83b0603 JF |
2309 | { |
2310 | struct nlmsghdr *nlh; | |
2311 | struct ndmsg *ndm; | |
2312 | ||
1c104a6b | 2313 | nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ndm), nlflags); |
d83b0603 JF |
2314 | if (!nlh) |
2315 | return -EMSGSIZE; | |
2316 | ||
2317 | ndm = nlmsg_data(nlh); | |
2318 | ndm->ndm_family = AF_BRIDGE; | |
2319 | ndm->ndm_pad1 = 0; | |
2320 | ndm->ndm_pad2 = 0; | |
2321 | ndm->ndm_flags = flags; | |
2322 | ndm->ndm_type = 0; | |
2323 | ndm->ndm_ifindex = dev->ifindex; | |
2324 | ndm->ndm_state = NUD_PERMANENT; | |
2325 | ||
2326 | if (nla_put(skb, NDA_LLADDR, ETH_ALEN, addr)) | |
2327 | goto nla_put_failure; | |
2328 | ||
2329 | return nlmsg_end(skb, nlh); | |
2330 | ||
2331 | nla_put_failure: | |
2332 | nlmsg_cancel(skb, nlh); | |
2333 | return -EMSGSIZE; | |
2334 | } | |
2335 | ||
3ff661c3 JF |
2336 | static inline size_t rtnl_fdb_nlmsg_size(void) |
2337 | { | |
2338 | return NLMSG_ALIGN(sizeof(struct ndmsg)) + nla_total_size(ETH_ALEN); | |
2339 | } | |
2340 | ||
2341 | static void rtnl_fdb_notify(struct net_device *dev, u8 *addr, int type) | |
2342 | { | |
2343 | struct net *net = dev_net(dev); | |
2344 | struct sk_buff *skb; | |
2345 | int err = -ENOBUFS; | |
2346 | ||
2347 | skb = nlmsg_new(rtnl_fdb_nlmsg_size(), GFP_ATOMIC); | |
2348 | if (!skb) | |
2349 | goto errout; | |
2350 | ||
1c104a6b | 2351 | err = nlmsg_populate_fdb_fill(skb, dev, addr, 0, 0, type, NTF_SELF, 0); |
3ff661c3 JF |
2352 | if (err < 0) { |
2353 | kfree_skb(skb); | |
2354 | goto errout; | |
2355 | } | |
2356 | ||
2357 | rtnl_notify(skb, net, 0, RTNLGRP_NEIGH, NULL, GFP_ATOMIC); | |
2358 | return; | |
2359 | errout: | |
2360 | rtnl_set_sk_err(net, RTNLGRP_NEIGH, err); | |
2361 | } | |
2362 | ||
090096bf VY |
2363 | /** |
2364 | * ndo_dflt_fdb_add - default netdevice operation to add an FDB entry | |
2365 | */ | |
2366 | int ndo_dflt_fdb_add(struct ndmsg *ndm, | |
2367 | struct nlattr *tb[], | |
2368 | struct net_device *dev, | |
f6f6424b | 2369 | const unsigned char *addr, u16 vid, |
090096bf VY |
2370 | u16 flags) |
2371 | { | |
2372 | int err = -EINVAL; | |
2373 | ||
2374 | /* If aging addresses are supported device will need to | |
2375 | * implement its own handler for this. | |
2376 | */ | |
2377 | if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) { | |
2378 | pr_info("%s: FDB only supports static addresses\n", dev->name); | |
2379 | return err; | |
2380 | } | |
2381 | ||
65891fea OG |
2382 | if (vid) { |
2383 | pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name); | |
2384 | return err; | |
2385 | } | |
2386 | ||
090096bf VY |
2387 | if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr)) |
2388 | err = dev_uc_add_excl(dev, addr); | |
2389 | else if (is_multicast_ether_addr(addr)) | |
2390 | err = dev_mc_add_excl(dev, addr); | |
2391 | ||
2392 | /* Only return duplicate errors if NLM_F_EXCL is set */ | |
2393 | if (err == -EEXIST && !(flags & NLM_F_EXCL)) | |
2394 | err = 0; | |
2395 | ||
2396 | return err; | |
2397 | } | |
2398 | EXPORT_SYMBOL(ndo_dflt_fdb_add); | |
2399 | ||
f6f6424b JP |
2400 | static int fdb_vid_parse(struct nlattr *vlan_attr, u16 *p_vid) |
2401 | { | |
2402 | u16 vid = 0; | |
2403 | ||
2404 | if (vlan_attr) { | |
2405 | if (nla_len(vlan_attr) != sizeof(u16)) { | |
2406 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid vlan\n"); | |
2407 | return -EINVAL; | |
2408 | } | |
2409 | ||
2410 | vid = nla_get_u16(vlan_attr); | |
2411 | ||
2412 | if (!vid || vid >= VLAN_VID_MASK) { | |
2413 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid vlan id %d\n", | |
2414 | vid); | |
2415 | return -EINVAL; | |
2416 | } | |
2417 | } | |
2418 | *p_vid = vid; | |
2419 | return 0; | |
2420 | } | |
2421 | ||
661d2967 | 2422 | static int rtnl_fdb_add(struct sk_buff *skb, struct nlmsghdr *nlh) |
77162022 JF |
2423 | { |
2424 | struct net *net = sock_net(skb->sk); | |
77162022 JF |
2425 | struct ndmsg *ndm; |
2426 | struct nlattr *tb[NDA_MAX+1]; | |
2427 | struct net_device *dev; | |
2428 | u8 *addr; | |
f6f6424b | 2429 | u16 vid; |
77162022 JF |
2430 | int err; |
2431 | ||
2432 | err = nlmsg_parse(nlh, sizeof(*ndm), tb, NDA_MAX, NULL); | |
2433 | if (err < 0) | |
2434 | return err; | |
2435 | ||
2436 | ndm = nlmsg_data(nlh); | |
2437 | if (ndm->ndm_ifindex == 0) { | |
2438 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid ifindex\n"); | |
2439 | return -EINVAL; | |
2440 | } | |
2441 | ||
2442 | dev = __dev_get_by_index(net, ndm->ndm_ifindex); | |
2443 | if (dev == NULL) { | |
2444 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with unknown ifindex\n"); | |
2445 | return -ENODEV; | |
2446 | } | |
2447 | ||
2448 | if (!tb[NDA_LLADDR] || nla_len(tb[NDA_LLADDR]) != ETH_ALEN) { | |
2449 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid address\n"); | |
2450 | return -EINVAL; | |
2451 | } | |
2452 | ||
2453 | addr = nla_data(tb[NDA_LLADDR]); | |
77162022 | 2454 | |
f6f6424b JP |
2455 | err = fdb_vid_parse(tb[NDA_VLAN], &vid); |
2456 | if (err) | |
2457 | return err; | |
2458 | ||
77162022 JF |
2459 | err = -EOPNOTSUPP; |
2460 | ||
2461 | /* Support fdb on master device the net/bridge default case */ | |
2462 | if ((!ndm->ndm_flags || ndm->ndm_flags & NTF_MASTER) && | |
2463 | (dev->priv_flags & IFF_BRIDGE_PORT)) { | |
898e5061 JP |
2464 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
2465 | const struct net_device_ops *ops = br_dev->netdev_ops; | |
2466 | ||
f6f6424b JP |
2467 | err = ops->ndo_fdb_add(ndm, tb, dev, addr, vid, |
2468 | nlh->nlmsg_flags); | |
77162022 JF |
2469 | if (err) |
2470 | goto out; | |
2471 | else | |
2472 | ndm->ndm_flags &= ~NTF_MASTER; | |
2473 | } | |
2474 | ||
2475 | /* Embedded bridge, macvlan, and any other device support */ | |
090096bf VY |
2476 | if ((ndm->ndm_flags & NTF_SELF)) { |
2477 | if (dev->netdev_ops->ndo_fdb_add) | |
2478 | err = dev->netdev_ops->ndo_fdb_add(ndm, tb, dev, addr, | |
f6f6424b | 2479 | vid, |
090096bf VY |
2480 | nlh->nlmsg_flags); |
2481 | else | |
f6f6424b | 2482 | err = ndo_dflt_fdb_add(ndm, tb, dev, addr, vid, |
090096bf | 2483 | nlh->nlmsg_flags); |
77162022 | 2484 | |
3ff661c3 JF |
2485 | if (!err) { |
2486 | rtnl_fdb_notify(dev, addr, RTM_NEWNEIGH); | |
77162022 | 2487 | ndm->ndm_flags &= ~NTF_SELF; |
3ff661c3 | 2488 | } |
77162022 JF |
2489 | } |
2490 | out: | |
2491 | return err; | |
2492 | } | |
2493 | ||
090096bf VY |
2494 | /** |
2495 | * ndo_dflt_fdb_del - default netdevice operation to delete an FDB entry | |
2496 | */ | |
2497 | int ndo_dflt_fdb_del(struct ndmsg *ndm, | |
2498 | struct nlattr *tb[], | |
2499 | struct net_device *dev, | |
f6f6424b | 2500 | const unsigned char *addr, u16 vid) |
090096bf | 2501 | { |
c8a89c4a | 2502 | int err = -EINVAL; |
090096bf VY |
2503 | |
2504 | /* If aging addresses are supported device will need to | |
2505 | * implement its own handler for this. | |
2506 | */ | |
64535993 | 2507 | if (!(ndm->ndm_state & NUD_PERMANENT)) { |
090096bf | 2508 | pr_info("%s: FDB only supports static addresses\n", dev->name); |
c8a89c4a | 2509 | return err; |
090096bf VY |
2510 | } |
2511 | ||
2512 | if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr)) | |
2513 | err = dev_uc_del(dev, addr); | |
2514 | else if (is_multicast_ether_addr(addr)) | |
2515 | err = dev_mc_del(dev, addr); | |
090096bf VY |
2516 | |
2517 | return err; | |
2518 | } | |
2519 | EXPORT_SYMBOL(ndo_dflt_fdb_del); | |
2520 | ||
661d2967 | 2521 | static int rtnl_fdb_del(struct sk_buff *skb, struct nlmsghdr *nlh) |
77162022 JF |
2522 | { |
2523 | struct net *net = sock_net(skb->sk); | |
2524 | struct ndmsg *ndm; | |
1690be63 | 2525 | struct nlattr *tb[NDA_MAX+1]; |
77162022 JF |
2526 | struct net_device *dev; |
2527 | int err = -EINVAL; | |
2528 | __u8 *addr; | |
f6f6424b | 2529 | u16 vid; |
77162022 | 2530 | |
90f62cf3 | 2531 | if (!netlink_capable(skb, CAP_NET_ADMIN)) |
1690be63 VY |
2532 | return -EPERM; |
2533 | ||
2534 | err = nlmsg_parse(nlh, sizeof(*ndm), tb, NDA_MAX, NULL); | |
2535 | if (err < 0) | |
2536 | return err; | |
77162022 JF |
2537 | |
2538 | ndm = nlmsg_data(nlh); | |
2539 | if (ndm->ndm_ifindex == 0) { | |
2540 | pr_info("PF_BRIDGE: RTM_DELNEIGH with invalid ifindex\n"); | |
2541 | return -EINVAL; | |
2542 | } | |
2543 | ||
2544 | dev = __dev_get_by_index(net, ndm->ndm_ifindex); | |
2545 | if (dev == NULL) { | |
2546 | pr_info("PF_BRIDGE: RTM_DELNEIGH with unknown ifindex\n"); | |
2547 | return -ENODEV; | |
2548 | } | |
2549 | ||
1690be63 VY |
2550 | if (!tb[NDA_LLADDR] || nla_len(tb[NDA_LLADDR]) != ETH_ALEN) { |
2551 | pr_info("PF_BRIDGE: RTM_DELNEIGH with invalid address\n"); | |
2552 | return -EINVAL; | |
2553 | } | |
2554 | ||
2555 | addr = nla_data(tb[NDA_LLADDR]); | |
77162022 | 2556 | |
f6f6424b JP |
2557 | err = fdb_vid_parse(tb[NDA_VLAN], &vid); |
2558 | if (err) | |
2559 | return err; | |
2560 | ||
77162022 JF |
2561 | err = -EOPNOTSUPP; |
2562 | ||
2563 | /* Support fdb on master device the net/bridge default case */ | |
2564 | if ((!ndm->ndm_flags || ndm->ndm_flags & NTF_MASTER) && | |
2565 | (dev->priv_flags & IFF_BRIDGE_PORT)) { | |
898e5061 JP |
2566 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
2567 | const struct net_device_ops *ops = br_dev->netdev_ops; | |
77162022 | 2568 | |
898e5061 | 2569 | if (ops->ndo_fdb_del) |
f6f6424b | 2570 | err = ops->ndo_fdb_del(ndm, tb, dev, addr, vid); |
77162022 JF |
2571 | |
2572 | if (err) | |
2573 | goto out; | |
2574 | else | |
2575 | ndm->ndm_flags &= ~NTF_MASTER; | |
2576 | } | |
2577 | ||
2578 | /* Embedded bridge, macvlan, and any other device support */ | |
090096bf VY |
2579 | if (ndm->ndm_flags & NTF_SELF) { |
2580 | if (dev->netdev_ops->ndo_fdb_del) | |
f6f6424b JP |
2581 | err = dev->netdev_ops->ndo_fdb_del(ndm, tb, dev, addr, |
2582 | vid); | |
090096bf | 2583 | else |
f6f6424b | 2584 | err = ndo_dflt_fdb_del(ndm, tb, dev, addr, vid); |
77162022 | 2585 | |
3ff661c3 JF |
2586 | if (!err) { |
2587 | rtnl_fdb_notify(dev, addr, RTM_DELNEIGH); | |
77162022 | 2588 | ndm->ndm_flags &= ~NTF_SELF; |
3ff661c3 | 2589 | } |
77162022 JF |
2590 | } |
2591 | out: | |
2592 | return err; | |
2593 | } | |
2594 | ||
d83b0603 JF |
2595 | static int nlmsg_populate_fdb(struct sk_buff *skb, |
2596 | struct netlink_callback *cb, | |
2597 | struct net_device *dev, | |
2598 | int *idx, | |
2599 | struct netdev_hw_addr_list *list) | |
2600 | { | |
2601 | struct netdev_hw_addr *ha; | |
2602 | int err; | |
15e47304 | 2603 | u32 portid, seq; |
d83b0603 | 2604 | |
15e47304 | 2605 | portid = NETLINK_CB(cb->skb).portid; |
d83b0603 JF |
2606 | seq = cb->nlh->nlmsg_seq; |
2607 | ||
2608 | list_for_each_entry(ha, &list->list, list) { | |
2609 | if (*idx < cb->args[0]) | |
2610 | goto skip; | |
2611 | ||
2612 | err = nlmsg_populate_fdb_fill(skb, dev, ha->addr, | |
a7a558fe | 2613 | portid, seq, |
1c104a6b ND |
2614 | RTM_NEWNEIGH, NTF_SELF, |
2615 | NLM_F_MULTI); | |
d83b0603 JF |
2616 | if (err < 0) |
2617 | return err; | |
2618 | skip: | |
2619 | *idx += 1; | |
2620 | } | |
2621 | return 0; | |
2622 | } | |
2623 | ||
2624 | /** | |
2c53040f | 2625 | * ndo_dflt_fdb_dump - default netdevice operation to dump an FDB table. |
d83b0603 JF |
2626 | * @nlh: netlink message header |
2627 | * @dev: netdevice | |
2628 | * | |
2629 | * Default netdevice operation to dump the existing unicast address list. | |
91f3e7b1 | 2630 | * Returns number of addresses from list put in skb. |
d83b0603 JF |
2631 | */ |
2632 | int ndo_dflt_fdb_dump(struct sk_buff *skb, | |
2633 | struct netlink_callback *cb, | |
2634 | struct net_device *dev, | |
5d5eacb3 | 2635 | struct net_device *filter_dev, |
d83b0603 JF |
2636 | int idx) |
2637 | { | |
2638 | int err; | |
2639 | ||
2640 | netif_addr_lock_bh(dev); | |
2641 | err = nlmsg_populate_fdb(skb, cb, dev, &idx, &dev->uc); | |
2642 | if (err) | |
2643 | goto out; | |
2644 | nlmsg_populate_fdb(skb, cb, dev, &idx, &dev->mc); | |
2645 | out: | |
2646 | netif_addr_unlock_bh(dev); | |
2647 | return idx; | |
2648 | } | |
2649 | EXPORT_SYMBOL(ndo_dflt_fdb_dump); | |
2650 | ||
77162022 JF |
2651 | static int rtnl_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb) |
2652 | { | |
77162022 | 2653 | struct net_device *dev; |
5e6d2435 JHS |
2654 | struct nlattr *tb[IFLA_MAX+1]; |
2655 | struct net_device *bdev = NULL; | |
2656 | struct net_device *br_dev = NULL; | |
2657 | const struct net_device_ops *ops = NULL; | |
2658 | const struct net_device_ops *cops = NULL; | |
2659 | struct ifinfomsg *ifm = nlmsg_data(cb->nlh); | |
2660 | struct net *net = sock_net(skb->sk); | |
2661 | int brport_idx = 0; | |
2662 | int br_idx = 0; | |
2663 | int idx = 0; | |
2664 | ||
2665 | if (nlmsg_parse(cb->nlh, sizeof(struct ifinfomsg), tb, IFLA_MAX, | |
2666 | ifla_policy) == 0) { | |
2667 | if (tb[IFLA_MASTER]) | |
2668 | br_idx = nla_get_u32(tb[IFLA_MASTER]); | |
2669 | } | |
2670 | ||
2671 | brport_idx = ifm->ifi_index; | |
2672 | ||
2673 | if (br_idx) { | |
2674 | br_dev = __dev_get_by_index(net, br_idx); | |
2675 | if (!br_dev) | |
2676 | return -ENODEV; | |
2677 | ||
2678 | ops = br_dev->netdev_ops; | |
2679 | bdev = br_dev; | |
2680 | } | |
2681 | ||
2682 | for_each_netdev(net, dev) { | |
2683 | if (brport_idx && (dev->ifindex != brport_idx)) | |
2684 | continue; | |
2685 | ||
2686 | if (!br_idx) { /* user did not specify a specific bridge */ | |
2687 | if (dev->priv_flags & IFF_BRIDGE_PORT) { | |
2688 | br_dev = netdev_master_upper_dev_get(dev); | |
2689 | cops = br_dev->netdev_ops; | |
2690 | } | |
2691 | ||
2692 | bdev = dev; | |
2693 | } else { | |
2694 | if (dev != br_dev && | |
2695 | !(dev->priv_flags & IFF_BRIDGE_PORT)) | |
2696 | continue; | |
2697 | ||
2698 | if (br_dev != netdev_master_upper_dev_get(dev) && | |
2699 | !(dev->priv_flags & IFF_EBRIDGE)) | |
2700 | continue; | |
2701 | ||
2702 | bdev = br_dev; | |
2703 | cops = ops; | |
2704 | } | |
77162022 | 2705 | |
77162022 | 2706 | if (dev->priv_flags & IFF_BRIDGE_PORT) { |
5e6d2435 JHS |
2707 | if (cops && cops->ndo_fdb_dump) |
2708 | idx = cops->ndo_fdb_dump(skb, cb, br_dev, dev, | |
2709 | idx); | |
77162022 JF |
2710 | } |
2711 | ||
2712 | if (dev->netdev_ops->ndo_fdb_dump) | |
6cb69742 | 2713 | idx = dev->netdev_ops->ndo_fdb_dump(skb, cb, dev, NULL, |
5d5eacb3 | 2714 | idx); |
6cb69742 HS |
2715 | else |
2716 | idx = ndo_dflt_fdb_dump(skb, cb, dev, NULL, idx); | |
5e6d2435 JHS |
2717 | |
2718 | cops = NULL; | |
77162022 | 2719 | } |
77162022 JF |
2720 | |
2721 | cb->args[0] = idx; | |
2722 | return skb->len; | |
2723 | } | |
2724 | ||
2c3c031c SF |
2725 | static int brport_nla_put_flag(struct sk_buff *skb, u32 flags, u32 mask, |
2726 | unsigned int attrnum, unsigned int flag) | |
2727 | { | |
2728 | if (mask & flag) | |
2729 | return nla_put_u8(skb, attrnum, !!(flags & flag)); | |
2730 | return 0; | |
2731 | } | |
2732 | ||
815cccbf | 2733 | int ndo_dflt_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq, |
2c3c031c SF |
2734 | struct net_device *dev, u16 mode, |
2735 | u32 flags, u32 mask) | |
815cccbf JF |
2736 | { |
2737 | struct nlmsghdr *nlh; | |
2738 | struct ifinfomsg *ifm; | |
2739 | struct nlattr *br_afspec; | |
2c3c031c | 2740 | struct nlattr *protinfo; |
815cccbf | 2741 | u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN; |
898e5061 | 2742 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
815cccbf JF |
2743 | |
2744 | nlh = nlmsg_put(skb, pid, seq, RTM_NEWLINK, sizeof(*ifm), NLM_F_MULTI); | |
2745 | if (nlh == NULL) | |
2746 | return -EMSGSIZE; | |
2747 | ||
2748 | ifm = nlmsg_data(nlh); | |
2749 | ifm->ifi_family = AF_BRIDGE; | |
2750 | ifm->__ifi_pad = 0; | |
2751 | ifm->ifi_type = dev->type; | |
2752 | ifm->ifi_index = dev->ifindex; | |
2753 | ifm->ifi_flags = dev_get_flags(dev); | |
2754 | ifm->ifi_change = 0; | |
2755 | ||
2756 | ||
2757 | if (nla_put_string(skb, IFLA_IFNAME, dev->name) || | |
2758 | nla_put_u32(skb, IFLA_MTU, dev->mtu) || | |
2759 | nla_put_u8(skb, IFLA_OPERSTATE, operstate) || | |
898e5061 JP |
2760 | (br_dev && |
2761 | nla_put_u32(skb, IFLA_MASTER, br_dev->ifindex)) || | |
815cccbf JF |
2762 | (dev->addr_len && |
2763 | nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) || | |
2764 | (dev->ifindex != dev->iflink && | |
2765 | nla_put_u32(skb, IFLA_LINK, dev->iflink))) | |
2766 | goto nla_put_failure; | |
2767 | ||
2768 | br_afspec = nla_nest_start(skb, IFLA_AF_SPEC); | |
2769 | if (!br_afspec) | |
2770 | goto nla_put_failure; | |
2771 | ||
1d460b98 | 2772 | if (nla_put_u16(skb, IFLA_BRIDGE_FLAGS, BRIDGE_FLAGS_SELF)) { |
815cccbf JF |
2773 | nla_nest_cancel(skb, br_afspec); |
2774 | goto nla_put_failure; | |
2775 | } | |
1d460b98 RP |
2776 | |
2777 | if (mode != BRIDGE_MODE_UNDEF) { | |
2778 | if (nla_put_u16(skb, IFLA_BRIDGE_MODE, mode)) { | |
2779 | nla_nest_cancel(skb, br_afspec); | |
2780 | goto nla_put_failure; | |
2781 | } | |
2782 | } | |
815cccbf JF |
2783 | nla_nest_end(skb, br_afspec); |
2784 | ||
2c3c031c SF |
2785 | protinfo = nla_nest_start(skb, IFLA_PROTINFO | NLA_F_NESTED); |
2786 | if (!protinfo) | |
2787 | goto nla_put_failure; | |
2788 | ||
2789 | if (brport_nla_put_flag(skb, flags, mask, | |
2790 | IFLA_BRPORT_MODE, BR_HAIRPIN_MODE) || | |
2791 | brport_nla_put_flag(skb, flags, mask, | |
2792 | IFLA_BRPORT_GUARD, BR_BPDU_GUARD) || | |
2793 | brport_nla_put_flag(skb, flags, mask, | |
2794 | IFLA_BRPORT_FAST_LEAVE, | |
2795 | BR_MULTICAST_FAST_LEAVE) || | |
2796 | brport_nla_put_flag(skb, flags, mask, | |
2797 | IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK) || | |
2798 | brport_nla_put_flag(skb, flags, mask, | |
2799 | IFLA_BRPORT_LEARNING, BR_LEARNING) || | |
2800 | brport_nla_put_flag(skb, flags, mask, | |
2801 | IFLA_BRPORT_LEARNING_SYNC, BR_LEARNING_SYNC) || | |
2802 | brport_nla_put_flag(skb, flags, mask, | |
2803 | IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD) || | |
2804 | brport_nla_put_flag(skb, flags, mask, | |
2805 | IFLA_BRPORT_PROXYARP, BR_PROXYARP)) { | |
2806 | nla_nest_cancel(skb, protinfo); | |
2807 | goto nla_put_failure; | |
2808 | } | |
2809 | ||
2810 | nla_nest_end(skb, protinfo); | |
2811 | ||
815cccbf JF |
2812 | return nlmsg_end(skb, nlh); |
2813 | nla_put_failure: | |
2814 | nlmsg_cancel(skb, nlh); | |
2815 | return -EMSGSIZE; | |
2816 | } | |
2817 | EXPORT_SYMBOL(ndo_dflt_bridge_getlink); | |
2818 | ||
e5a55a89 JF |
2819 | static int rtnl_bridge_getlink(struct sk_buff *skb, struct netlink_callback *cb) |
2820 | { | |
2821 | struct net *net = sock_net(skb->sk); | |
2822 | struct net_device *dev; | |
2823 | int idx = 0; | |
2824 | u32 portid = NETLINK_CB(cb->skb).portid; | |
2825 | u32 seq = cb->nlh->nlmsg_seq; | |
6cbdceeb VY |
2826 | u32 filter_mask = 0; |
2827 | ||
aa68c20f TG |
2828 | if (nlmsg_len(cb->nlh) > sizeof(struct ifinfomsg)) { |
2829 | struct nlattr *extfilt; | |
2830 | ||
2831 | extfilt = nlmsg_find_attr(cb->nlh, sizeof(struct ifinfomsg), | |
2832 | IFLA_EXT_MASK); | |
2833 | if (extfilt) { | |
2834 | if (nla_len(extfilt) < sizeof(filter_mask)) | |
2835 | return -EINVAL; | |
2836 | ||
2837 | filter_mask = nla_get_u32(extfilt); | |
2838 | } | |
2839 | } | |
e5a55a89 JF |
2840 | |
2841 | rcu_read_lock(); | |
2842 | for_each_netdev_rcu(net, dev) { | |
2843 | const struct net_device_ops *ops = dev->netdev_ops; | |
898e5061 | 2844 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
e5a55a89 | 2845 | |
898e5061 | 2846 | if (br_dev && br_dev->netdev_ops->ndo_bridge_getlink) { |
25b1e679 | 2847 | if (idx >= cb->args[0] && |
898e5061 | 2848 | br_dev->netdev_ops->ndo_bridge_getlink( |
6cbdceeb | 2849 | skb, portid, seq, dev, filter_mask) < 0) |
e5a55a89 | 2850 | break; |
25b1e679 | 2851 | idx++; |
e5a55a89 JF |
2852 | } |
2853 | ||
2854 | if (ops->ndo_bridge_getlink) { | |
25b1e679 | 2855 | if (idx >= cb->args[0] && |
6cbdceeb VY |
2856 | ops->ndo_bridge_getlink(skb, portid, seq, dev, |
2857 | filter_mask) < 0) | |
e5a55a89 | 2858 | break; |
25b1e679 | 2859 | idx++; |
e5a55a89 JF |
2860 | } |
2861 | } | |
2862 | rcu_read_unlock(); | |
2863 | cb->args[0] = idx; | |
2864 | ||
2865 | return skb->len; | |
2866 | } | |
2867 | ||
2469ffd7 JF |
2868 | static inline size_t bridge_nlmsg_size(void) |
2869 | { | |
2870 | return NLMSG_ALIGN(sizeof(struct ifinfomsg)) | |
2871 | + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */ | |
2872 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */ | |
2873 | + nla_total_size(sizeof(u32)) /* IFLA_MASTER */ | |
2874 | + nla_total_size(sizeof(u32)) /* IFLA_MTU */ | |
2875 | + nla_total_size(sizeof(u32)) /* IFLA_LINK */ | |
2876 | + nla_total_size(sizeof(u32)) /* IFLA_OPERSTATE */ | |
2877 | + nla_total_size(sizeof(u8)) /* IFLA_PROTINFO */ | |
2878 | + nla_total_size(sizeof(struct nlattr)) /* IFLA_AF_SPEC */ | |
2879 | + nla_total_size(sizeof(u16)) /* IFLA_BRIDGE_FLAGS */ | |
2880 | + nla_total_size(sizeof(u16)); /* IFLA_BRIDGE_MODE */ | |
2881 | } | |
2882 | ||
2883 | static int rtnl_bridge_notify(struct net_device *dev, u16 flags) | |
2884 | { | |
2885 | struct net *net = dev_net(dev); | |
898e5061 | 2886 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
2469ffd7 JF |
2887 | struct sk_buff *skb; |
2888 | int err = -EOPNOTSUPP; | |
2889 | ||
2890 | skb = nlmsg_new(bridge_nlmsg_size(), GFP_ATOMIC); | |
2891 | if (!skb) { | |
2892 | err = -ENOMEM; | |
2893 | goto errout; | |
2894 | } | |
2895 | ||
c38e01b8 | 2896 | if ((!flags || (flags & BRIDGE_FLAGS_MASTER)) && |
898e5061 | 2897 | br_dev && br_dev->netdev_ops->ndo_bridge_getlink) { |
6cbdceeb | 2898 | err = br_dev->netdev_ops->ndo_bridge_getlink(skb, 0, 0, dev, 0); |
c38e01b8 JF |
2899 | if (err < 0) |
2900 | goto errout; | |
2901 | } | |
2469ffd7 | 2902 | |
c38e01b8 JF |
2903 | if ((flags & BRIDGE_FLAGS_SELF) && |
2904 | dev->netdev_ops->ndo_bridge_getlink) { | |
6cbdceeb | 2905 | err = dev->netdev_ops->ndo_bridge_getlink(skb, 0, 0, dev, 0); |
c38e01b8 JF |
2906 | if (err < 0) |
2907 | goto errout; | |
2908 | } | |
2469ffd7 JF |
2909 | |
2910 | rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC); | |
2911 | return 0; | |
2912 | errout: | |
2913 | WARN_ON(err == -EMSGSIZE); | |
2914 | kfree_skb(skb); | |
2915 | rtnl_set_sk_err(net, RTNLGRP_LINK, err); | |
2916 | return err; | |
2917 | } | |
2918 | ||
661d2967 | 2919 | static int rtnl_bridge_setlink(struct sk_buff *skb, struct nlmsghdr *nlh) |
e5a55a89 JF |
2920 | { |
2921 | struct net *net = sock_net(skb->sk); | |
2922 | struct ifinfomsg *ifm; | |
2923 | struct net_device *dev; | |
2469ffd7 JF |
2924 | struct nlattr *br_spec, *attr = NULL; |
2925 | int rem, err = -EOPNOTSUPP; | |
c38e01b8 JF |
2926 | u16 oflags, flags = 0; |
2927 | bool have_flags = false; | |
e5a55a89 JF |
2928 | |
2929 | if (nlmsg_len(nlh) < sizeof(*ifm)) | |
2930 | return -EINVAL; | |
2931 | ||
2932 | ifm = nlmsg_data(nlh); | |
2933 | if (ifm->ifi_family != AF_BRIDGE) | |
2934 | return -EPFNOSUPPORT; | |
2935 | ||
2936 | dev = __dev_get_by_index(net, ifm->ifi_index); | |
2937 | if (!dev) { | |
2938 | pr_info("PF_BRIDGE: RTM_SETLINK with unknown ifindex\n"); | |
2939 | return -ENODEV; | |
2940 | } | |
2941 | ||
2469ffd7 JF |
2942 | br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); |
2943 | if (br_spec) { | |
2944 | nla_for_each_nested(attr, br_spec, rem) { | |
2945 | if (nla_type(attr) == IFLA_BRIDGE_FLAGS) { | |
6e8d1c55 TG |
2946 | if (nla_len(attr) < sizeof(flags)) |
2947 | return -EINVAL; | |
2948 | ||
c38e01b8 | 2949 | have_flags = true; |
2469ffd7 JF |
2950 | flags = nla_get_u16(attr); |
2951 | break; | |
2952 | } | |
2953 | } | |
2954 | } | |
2955 | ||
c38e01b8 JF |
2956 | oflags = flags; |
2957 | ||
2469ffd7 | 2958 | if (!flags || (flags & BRIDGE_FLAGS_MASTER)) { |
898e5061 JP |
2959 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
2960 | ||
2961 | if (!br_dev || !br_dev->netdev_ops->ndo_bridge_setlink) { | |
2469ffd7 JF |
2962 | err = -EOPNOTSUPP; |
2963 | goto out; | |
2964 | } | |
2965 | ||
898e5061 | 2966 | err = br_dev->netdev_ops->ndo_bridge_setlink(dev, nlh); |
e5a55a89 JF |
2967 | if (err) |
2968 | goto out; | |
2469ffd7 JF |
2969 | |
2970 | flags &= ~BRIDGE_FLAGS_MASTER; | |
e5a55a89 JF |
2971 | } |
2972 | ||
2469ffd7 JF |
2973 | if ((flags & BRIDGE_FLAGS_SELF)) { |
2974 | if (!dev->netdev_ops->ndo_bridge_setlink) | |
2975 | err = -EOPNOTSUPP; | |
2976 | else | |
2977 | err = dev->netdev_ops->ndo_bridge_setlink(dev, nlh); | |
2978 | ||
2979 | if (!err) | |
2980 | flags &= ~BRIDGE_FLAGS_SELF; | |
2981 | } | |
e5a55a89 | 2982 | |
c38e01b8 | 2983 | if (have_flags) |
2469ffd7 JF |
2984 | memcpy(nla_data(attr), &flags, sizeof(flags)); |
2985 | /* Generate event to notify upper layer of bridge change */ | |
2986 | if (!err) | |
c38e01b8 | 2987 | err = rtnl_bridge_notify(dev, oflags); |
e5a55a89 JF |
2988 | out: |
2989 | return err; | |
2990 | } | |
2991 | ||
661d2967 | 2992 | static int rtnl_bridge_dellink(struct sk_buff *skb, struct nlmsghdr *nlh) |
407af329 VY |
2993 | { |
2994 | struct net *net = sock_net(skb->sk); | |
2995 | struct ifinfomsg *ifm; | |
2996 | struct net_device *dev; | |
2997 | struct nlattr *br_spec, *attr = NULL; | |
2998 | int rem, err = -EOPNOTSUPP; | |
2999 | u16 oflags, flags = 0; | |
3000 | bool have_flags = false; | |
3001 | ||
3002 | if (nlmsg_len(nlh) < sizeof(*ifm)) | |
3003 | return -EINVAL; | |
3004 | ||
3005 | ifm = nlmsg_data(nlh); | |
3006 | if (ifm->ifi_family != AF_BRIDGE) | |
3007 | return -EPFNOSUPPORT; | |
3008 | ||
3009 | dev = __dev_get_by_index(net, ifm->ifi_index); | |
3010 | if (!dev) { | |
3011 | pr_info("PF_BRIDGE: RTM_SETLINK with unknown ifindex\n"); | |
3012 | return -ENODEV; | |
3013 | } | |
3014 | ||
3015 | br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); | |
3016 | if (br_spec) { | |
3017 | nla_for_each_nested(attr, br_spec, rem) { | |
3018 | if (nla_type(attr) == IFLA_BRIDGE_FLAGS) { | |
6e8d1c55 TG |
3019 | if (nla_len(attr) < sizeof(flags)) |
3020 | return -EINVAL; | |
3021 | ||
407af329 VY |
3022 | have_flags = true; |
3023 | flags = nla_get_u16(attr); | |
3024 | break; | |
3025 | } | |
3026 | } | |
3027 | } | |
3028 | ||
3029 | oflags = flags; | |
3030 | ||
3031 | if (!flags || (flags & BRIDGE_FLAGS_MASTER)) { | |
3032 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); | |
3033 | ||
3034 | if (!br_dev || !br_dev->netdev_ops->ndo_bridge_dellink) { | |
3035 | err = -EOPNOTSUPP; | |
3036 | goto out; | |
3037 | } | |
3038 | ||
3039 | err = br_dev->netdev_ops->ndo_bridge_dellink(dev, nlh); | |
3040 | if (err) | |
3041 | goto out; | |
3042 | ||
3043 | flags &= ~BRIDGE_FLAGS_MASTER; | |
3044 | } | |
3045 | ||
3046 | if ((flags & BRIDGE_FLAGS_SELF)) { | |
3047 | if (!dev->netdev_ops->ndo_bridge_dellink) | |
3048 | err = -EOPNOTSUPP; | |
3049 | else | |
3050 | err = dev->netdev_ops->ndo_bridge_dellink(dev, nlh); | |
3051 | ||
3052 | if (!err) | |
3053 | flags &= ~BRIDGE_FLAGS_SELF; | |
3054 | } | |
3055 | ||
3056 | if (have_flags) | |
3057 | memcpy(nla_data(attr), &flags, sizeof(flags)); | |
3058 | /* Generate event to notify upper layer of bridge change */ | |
3059 | if (!err) | |
3060 | err = rtnl_bridge_notify(dev, oflags); | |
3061 | out: | |
3062 | return err; | |
3063 | } | |
3064 | ||
1da177e4 LT |
3065 | /* Process one rtnetlink message. */ |
3066 | ||
1d00a4eb | 3067 | static int rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh) |
1da177e4 | 3068 | { |
3b1e0a65 | 3069 | struct net *net = sock_net(skb->sk); |
e2849863 | 3070 | rtnl_doit_func doit; |
1da177e4 | 3071 | int sz_idx, kind; |
1da177e4 LT |
3072 | int family; |
3073 | int type; | |
2907c35f | 3074 | int err; |
1da177e4 | 3075 | |
1da177e4 | 3076 | type = nlh->nlmsg_type; |
1da177e4 | 3077 | if (type > RTM_MAX) |
038890fe | 3078 | return -EOPNOTSUPP; |
1da177e4 LT |
3079 | |
3080 | type -= RTM_BASE; | |
3081 | ||
3082 | /* All the messages must have at least 1 byte length */ | |
573ce260 | 3083 | if (nlmsg_len(nlh) < sizeof(struct rtgenmsg)) |
1da177e4 LT |
3084 | return 0; |
3085 | ||
573ce260 | 3086 | family = ((struct rtgenmsg *)nlmsg_data(nlh))->rtgen_family; |
1da177e4 LT |
3087 | sz_idx = type>>2; |
3088 | kind = type&3; | |
3089 | ||
90f62cf3 | 3090 | if (kind != 2 && !netlink_net_capable(skb, CAP_NET_ADMIN)) |
1d00a4eb | 3091 | return -EPERM; |
1da177e4 | 3092 | |
b8f3ab42 | 3093 | if (kind == 2 && nlh->nlmsg_flags&NLM_F_DUMP) { |
97c53cac | 3094 | struct sock *rtnl; |
e2849863 | 3095 | rtnl_dumpit_func dumpit; |
c7ac8679 GR |
3096 | rtnl_calcit_func calcit; |
3097 | u16 min_dump_alloc = 0; | |
1da177e4 | 3098 | |
e2849863 TG |
3099 | dumpit = rtnl_get_dumpit(family, type); |
3100 | if (dumpit == NULL) | |
038890fe | 3101 | return -EOPNOTSUPP; |
c7ac8679 GR |
3102 | calcit = rtnl_get_calcit(family, type); |
3103 | if (calcit) | |
115c9b81 | 3104 | min_dump_alloc = calcit(skb, nlh); |
9ac4a169 | 3105 | |
2907c35f | 3106 | __rtnl_unlock(); |
97c53cac | 3107 | rtnl = net->rtnl; |
80d326fa PNA |
3108 | { |
3109 | struct netlink_dump_control c = { | |
3110 | .dump = dumpit, | |
3111 | .min_dump_alloc = min_dump_alloc, | |
3112 | }; | |
3113 | err = netlink_dump_start(rtnl, skb, nlh, &c); | |
3114 | } | |
2907c35f ED |
3115 | rtnl_lock(); |
3116 | return err; | |
1da177e4 LT |
3117 | } |
3118 | ||
e2849863 TG |
3119 | doit = rtnl_get_doit(family, type); |
3120 | if (doit == NULL) | |
038890fe | 3121 | return -EOPNOTSUPP; |
1da177e4 | 3122 | |
661d2967 | 3123 | return doit(skb, nlh); |
1da177e4 LT |
3124 | } |
3125 | ||
cd40b7d3 | 3126 | static void rtnetlink_rcv(struct sk_buff *skb) |
1da177e4 | 3127 | { |
cd40b7d3 DL |
3128 | rtnl_lock(); |
3129 | netlink_rcv_skb(skb, &rtnetlink_rcv_msg); | |
3130 | rtnl_unlock(); | |
1da177e4 LT |
3131 | } |
3132 | ||
1da177e4 LT |
3133 | static int rtnetlink_event(struct notifier_block *this, unsigned long event, void *ptr) |
3134 | { | |
351638e7 | 3135 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
e9dc8653 | 3136 | |
1da177e4 | 3137 | switch (event) { |
1da177e4 LT |
3138 | case NETDEV_UP: |
3139 | case NETDEV_DOWN: | |
10de05af | 3140 | case NETDEV_PRE_UP: |
d90a909e EB |
3141 | case NETDEV_POST_INIT: |
3142 | case NETDEV_REGISTER: | |
1da177e4 | 3143 | case NETDEV_CHANGE: |
755d0e77 | 3144 | case NETDEV_PRE_TYPE_CHANGE: |
1da177e4 | 3145 | case NETDEV_GOING_DOWN: |
a2835763 | 3146 | case NETDEV_UNREGISTER: |
0115e8e3 | 3147 | case NETDEV_UNREGISTER_FINAL: |
ac3d3f81 AW |
3148 | case NETDEV_RELEASE: |
3149 | case NETDEV_JOIN: | |
1da177e4 LT |
3150 | break; |
3151 | default: | |
7f294054 | 3152 | rtmsg_ifinfo(RTM_NEWLINK, dev, 0, GFP_KERNEL); |
1da177e4 LT |
3153 | break; |
3154 | } | |
3155 | return NOTIFY_DONE; | |
3156 | } | |
3157 | ||
3158 | static struct notifier_block rtnetlink_dev_notifier = { | |
3159 | .notifier_call = rtnetlink_event, | |
3160 | }; | |
3161 | ||
97c53cac | 3162 | |
2c8c1e72 | 3163 | static int __net_init rtnetlink_net_init(struct net *net) |
97c53cac DL |
3164 | { |
3165 | struct sock *sk; | |
a31f2d17 PNA |
3166 | struct netlink_kernel_cfg cfg = { |
3167 | .groups = RTNLGRP_MAX, | |
3168 | .input = rtnetlink_rcv, | |
3169 | .cb_mutex = &rtnl_mutex, | |
9785e10a | 3170 | .flags = NL_CFG_F_NONROOT_RECV, |
a31f2d17 PNA |
3171 | }; |
3172 | ||
9f00d977 | 3173 | sk = netlink_kernel_create(net, NETLINK_ROUTE, &cfg); |
97c53cac DL |
3174 | if (!sk) |
3175 | return -ENOMEM; | |
97c53cac DL |
3176 | net->rtnl = sk; |
3177 | return 0; | |
3178 | } | |
3179 | ||
2c8c1e72 | 3180 | static void __net_exit rtnetlink_net_exit(struct net *net) |
97c53cac | 3181 | { |
775516bf DL |
3182 | netlink_kernel_release(net->rtnl); |
3183 | net->rtnl = NULL; | |
97c53cac DL |
3184 | } |
3185 | ||
3186 | static struct pernet_operations rtnetlink_net_ops = { | |
3187 | .init = rtnetlink_net_init, | |
3188 | .exit = rtnetlink_net_exit, | |
3189 | }; | |
3190 | ||
1da177e4 LT |
3191 | void __init rtnetlink_init(void) |
3192 | { | |
97c53cac | 3193 | if (register_pernet_subsys(&rtnetlink_net_ops)) |
1da177e4 | 3194 | panic("rtnetlink_init: cannot initialize rtnetlink\n"); |
97c53cac | 3195 | |
1da177e4 | 3196 | register_netdevice_notifier(&rtnetlink_dev_notifier); |
340d17fc | 3197 | |
c7ac8679 GR |
3198 | rtnl_register(PF_UNSPEC, RTM_GETLINK, rtnl_getlink, |
3199 | rtnl_dump_ifinfo, rtnl_calcit); | |
3200 | rtnl_register(PF_UNSPEC, RTM_SETLINK, rtnl_setlink, NULL, NULL); | |
3201 | rtnl_register(PF_UNSPEC, RTM_NEWLINK, rtnl_newlink, NULL, NULL); | |
3202 | rtnl_register(PF_UNSPEC, RTM_DELLINK, rtnl_dellink, NULL, NULL); | |
687ad8cc | 3203 | |
c7ac8679 GR |
3204 | rtnl_register(PF_UNSPEC, RTM_GETADDR, NULL, rtnl_dump_all, NULL); |
3205 | rtnl_register(PF_UNSPEC, RTM_GETROUTE, NULL, rtnl_dump_all, NULL); | |
77162022 JF |
3206 | |
3207 | rtnl_register(PF_BRIDGE, RTM_NEWNEIGH, rtnl_fdb_add, NULL, NULL); | |
3208 | rtnl_register(PF_BRIDGE, RTM_DELNEIGH, rtnl_fdb_del, NULL, NULL); | |
3209 | rtnl_register(PF_BRIDGE, RTM_GETNEIGH, NULL, rtnl_fdb_dump, NULL); | |
e5a55a89 JF |
3210 | |
3211 | rtnl_register(PF_BRIDGE, RTM_GETLINK, NULL, rtnl_bridge_getlink, NULL); | |
407af329 | 3212 | rtnl_register(PF_BRIDGE, RTM_DELLINK, rtnl_bridge_dellink, NULL, NULL); |
e5a55a89 | 3213 | rtnl_register(PF_BRIDGE, RTM_SETLINK, rtnl_bridge_setlink, NULL, NULL); |
1da177e4 LT |
3214 | } |
3215 |