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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 */ |
d37512a2 | 878 | + nla_total_size(4) /* IFLA_LINK_NETNSID */ |
115c9b81 GR |
879 | + nla_total_size(ext_filter_mask |
880 | & RTEXT_FILTER_VF ? 4 : 0) /* IFLA_NUM_VF */ | |
881 | + rtnl_vfinfo_size(dev, ext_filter_mask) /* IFLA_VFINFO_LIST */ | |
c53864fd | 882 | + rtnl_port_size(dev, ext_filter_mask) /* IFLA_VF_PORTS + IFLA_PORT_SELF */ |
f8ff182c | 883 | + rtnl_link_get_size(dev) /* IFLA_LINKINFO */ |
66cae9ed | 884 | + rtnl_link_get_af_size(dev) /* IFLA_AF_SPEC */ |
82f28412 JP |
885 | + nla_total_size(MAX_PHYS_ITEM_ID_LEN) /* IFLA_PHYS_PORT_ID */ |
886 | + nla_total_size(MAX_PHYS_ITEM_ID_LEN); /* IFLA_PHYS_SWITCH_ID */ | |
339bf98f TG |
887 | } |
888 | ||
57b61080 SF |
889 | static int rtnl_vf_ports_fill(struct sk_buff *skb, struct net_device *dev) |
890 | { | |
891 | struct nlattr *vf_ports; | |
892 | struct nlattr *vf_port; | |
893 | int vf; | |
894 | int err; | |
895 | ||
896 | vf_ports = nla_nest_start(skb, IFLA_VF_PORTS); | |
897 | if (!vf_ports) | |
898 | return -EMSGSIZE; | |
899 | ||
900 | for (vf = 0; vf < dev_num_vf(dev->dev.parent); vf++) { | |
901 | vf_port = nla_nest_start(skb, IFLA_VF_PORT); | |
8ca94183 SF |
902 | if (!vf_port) |
903 | goto nla_put_failure; | |
a6574349 DM |
904 | if (nla_put_u32(skb, IFLA_PORT_VF, vf)) |
905 | goto nla_put_failure; | |
57b61080 | 906 | err = dev->netdev_ops->ndo_get_vf_port(dev, vf, skb); |
8ca94183 SF |
907 | if (err == -EMSGSIZE) |
908 | goto nla_put_failure; | |
57b61080 | 909 | if (err) { |
57b61080 SF |
910 | nla_nest_cancel(skb, vf_port); |
911 | continue; | |
912 | } | |
913 | nla_nest_end(skb, vf_port); | |
914 | } | |
915 | ||
916 | nla_nest_end(skb, vf_ports); | |
917 | ||
918 | return 0; | |
8ca94183 SF |
919 | |
920 | nla_put_failure: | |
921 | nla_nest_cancel(skb, vf_ports); | |
922 | return -EMSGSIZE; | |
57b61080 SF |
923 | } |
924 | ||
925 | static int rtnl_port_self_fill(struct sk_buff *skb, struct net_device *dev) | |
926 | { | |
927 | struct nlattr *port_self; | |
928 | int err; | |
929 | ||
930 | port_self = nla_nest_start(skb, IFLA_PORT_SELF); | |
931 | if (!port_self) | |
932 | return -EMSGSIZE; | |
933 | ||
934 | err = dev->netdev_ops->ndo_get_vf_port(dev, PORT_SELF_VF, skb); | |
935 | if (err) { | |
936 | nla_nest_cancel(skb, port_self); | |
8ca94183 | 937 | return (err == -EMSGSIZE) ? err : 0; |
57b61080 SF |
938 | } |
939 | ||
940 | nla_nest_end(skb, port_self); | |
941 | ||
942 | return 0; | |
943 | } | |
944 | ||
c53864fd DG |
945 | static int rtnl_port_fill(struct sk_buff *skb, struct net_device *dev, |
946 | u32 ext_filter_mask) | |
57b61080 SF |
947 | { |
948 | int err; | |
949 | ||
c53864fd DG |
950 | if (!dev->netdev_ops->ndo_get_vf_port || !dev->dev.parent || |
951 | !(ext_filter_mask & RTEXT_FILTER_VF)) | |
57b61080 SF |
952 | return 0; |
953 | ||
954 | err = rtnl_port_self_fill(skb, dev); | |
955 | if (err) | |
956 | return err; | |
957 | ||
958 | if (dev_num_vf(dev->dev.parent)) { | |
959 | err = rtnl_vf_ports_fill(skb, dev); | |
960 | if (err) | |
961 | return err; | |
962 | } | |
963 | ||
964 | return 0; | |
965 | } | |
966 | ||
66cae9ed JP |
967 | static int rtnl_phys_port_id_fill(struct sk_buff *skb, struct net_device *dev) |
968 | { | |
969 | int err; | |
02637fce | 970 | struct netdev_phys_item_id ppid; |
66cae9ed JP |
971 | |
972 | err = dev_get_phys_port_id(dev, &ppid); | |
973 | if (err) { | |
974 | if (err == -EOPNOTSUPP) | |
975 | return 0; | |
976 | return err; | |
977 | } | |
978 | ||
979 | if (nla_put(skb, IFLA_PHYS_PORT_ID, ppid.id_len, ppid.id)) | |
980 | return -EMSGSIZE; | |
981 | ||
982 | return 0; | |
983 | } | |
984 | ||
82f28412 JP |
985 | static int rtnl_phys_switch_id_fill(struct sk_buff *skb, struct net_device *dev) |
986 | { | |
987 | int err; | |
988 | struct netdev_phys_item_id psid; | |
989 | ||
990 | err = netdev_switch_parent_id_get(dev, &psid); | |
991 | if (err) { | |
992 | if (err == -EOPNOTSUPP) | |
993 | return 0; | |
994 | return err; | |
995 | } | |
996 | ||
997 | if (nla_put(skb, IFLA_PHYS_SWITCH_ID, psid.id_len, psid.id)) | |
998 | return -EMSGSIZE; | |
999 | ||
1000 | return 0; | |
1001 | } | |
1002 | ||
b60c5115 | 1003 | static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev, |
575c3e2a | 1004 | int type, u32 pid, u32 seq, u32 change, |
115c9b81 | 1005 | unsigned int flags, u32 ext_filter_mask) |
b60c5115 TG |
1006 | { |
1007 | struct ifinfomsg *ifm; | |
1008 | struct nlmsghdr *nlh; | |
28172739 | 1009 | struct rtnl_link_stats64 temp; |
be1f3c2c | 1010 | const struct rtnl_link_stats64 *stats; |
f8ff182c TG |
1011 | struct nlattr *attr, *af_spec; |
1012 | struct rtnl_af_ops *af_ops; | |
898e5061 | 1013 | struct net_device *upper_dev = netdev_master_upper_dev_get(dev); |
1da177e4 | 1014 | |
2907c35f | 1015 | ASSERT_RTNL(); |
b60c5115 TG |
1016 | nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ifm), flags); |
1017 | if (nlh == NULL) | |
26932566 | 1018 | return -EMSGSIZE; |
1da177e4 | 1019 | |
b60c5115 TG |
1020 | ifm = nlmsg_data(nlh); |
1021 | ifm->ifi_family = AF_UNSPEC; | |
1022 | ifm->__ifi_pad = 0; | |
1023 | ifm->ifi_type = dev->type; | |
1024 | ifm->ifi_index = dev->ifindex; | |
1025 | ifm->ifi_flags = dev_get_flags(dev); | |
1026 | ifm->ifi_change = change; | |
1027 | ||
a6574349 DM |
1028 | if (nla_put_string(skb, IFLA_IFNAME, dev->name) || |
1029 | nla_put_u32(skb, IFLA_TXQLEN, dev->tx_queue_len) || | |
1030 | nla_put_u8(skb, IFLA_OPERSTATE, | |
1031 | netif_running(dev) ? dev->operstate : IF_OPER_DOWN) || | |
1032 | nla_put_u8(skb, IFLA_LINKMODE, dev->link_mode) || | |
1033 | nla_put_u32(skb, IFLA_MTU, dev->mtu) || | |
1034 | nla_put_u32(skb, IFLA_GROUP, dev->group) || | |
edbc0bb3 | 1035 | nla_put_u32(skb, IFLA_PROMISCUITY, dev->promiscuity) || |
76ff5cc9 | 1036 | nla_put_u32(skb, IFLA_NUM_TX_QUEUES, dev->num_tx_queues) || |
1d69c2b3 | 1037 | #ifdef CONFIG_RPS |
76ff5cc9 | 1038 | nla_put_u32(skb, IFLA_NUM_RX_QUEUES, dev->num_rx_queues) || |
1d69c2b3 | 1039 | #endif |
a6574349 DM |
1040 | (dev->ifindex != dev->iflink && |
1041 | nla_put_u32(skb, IFLA_LINK, dev->iflink)) || | |
898e5061 JP |
1042 | (upper_dev && |
1043 | nla_put_u32(skb, IFLA_MASTER, upper_dev->ifindex)) || | |
9a57247f | 1044 | nla_put_u8(skb, IFLA_CARRIER, netif_carrier_ok(dev)) || |
a6574349 DM |
1045 | (dev->qdisc && |
1046 | nla_put_string(skb, IFLA_QDISC, dev->qdisc->ops->id)) || | |
1047 | (dev->ifalias && | |
2d3b479d | 1048 | nla_put_string(skb, IFLA_IFALIAS, dev->ifalias)) || |
1049 | nla_put_u32(skb, IFLA_CARRIER_CHANGES, | |
1050 | atomic_read(&dev->carrier_changes))) | |
a6574349 | 1051 | goto nla_put_failure; |
0b815a1a | 1052 | |
1da177e4 LT |
1053 | if (1) { |
1054 | struct rtnl_link_ifmap map = { | |
1055 | .mem_start = dev->mem_start, | |
1056 | .mem_end = dev->mem_end, | |
1057 | .base_addr = dev->base_addr, | |
1058 | .irq = dev->irq, | |
1059 | .dma = dev->dma, | |
1060 | .port = dev->if_port, | |
1061 | }; | |
a6574349 DM |
1062 | if (nla_put(skb, IFLA_MAP, sizeof(map), &map)) |
1063 | goto nla_put_failure; | |
1da177e4 LT |
1064 | } |
1065 | ||
1066 | if (dev->addr_len) { | |
a6574349 DM |
1067 | if (nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr) || |
1068 | nla_put(skb, IFLA_BROADCAST, dev->addr_len, dev->broadcast)) | |
1069 | goto nla_put_failure; | |
1da177e4 LT |
1070 | } |
1071 | ||
66cae9ed JP |
1072 | if (rtnl_phys_port_id_fill(skb, dev)) |
1073 | goto nla_put_failure; | |
1074 | ||
82f28412 JP |
1075 | if (rtnl_phys_switch_id_fill(skb, dev)) |
1076 | goto nla_put_failure; | |
1077 | ||
96e74088 PE |
1078 | attr = nla_reserve(skb, IFLA_STATS, |
1079 | sizeof(struct rtnl_link_stats)); | |
1080 | if (attr == NULL) | |
1081 | goto nla_put_failure; | |
b60c5115 | 1082 | |
28172739 | 1083 | stats = dev_get_stats(dev, &temp); |
96e74088 | 1084 | copy_rtnl_link_stats(nla_data(attr), stats); |
1da177e4 | 1085 | |
10708f37 JE |
1086 | attr = nla_reserve(skb, IFLA_STATS64, |
1087 | sizeof(struct rtnl_link_stats64)); | |
1088 | if (attr == NULL) | |
1089 | goto nla_put_failure; | |
10708f37 JE |
1090 | copy_rtnl_link_stats64(nla_data(attr), stats); |
1091 | ||
a6574349 DM |
1092 | if (dev->dev.parent && (ext_filter_mask & RTEXT_FILTER_VF) && |
1093 | nla_put_u32(skb, IFLA_NUM_VF, dev_num_vf(dev->dev.parent))) | |
1094 | goto nla_put_failure; | |
57b61080 | 1095 | |
115c9b81 GR |
1096 | if (dev->netdev_ops->ndo_get_vf_config && dev->dev.parent |
1097 | && (ext_filter_mask & RTEXT_FILTER_VF)) { | |
ebc08a6f | 1098 | int i; |
ebc08a6f | 1099 | |
c02db8c6 CW |
1100 | struct nlattr *vfinfo, *vf; |
1101 | int num_vfs = dev_num_vf(dev->dev.parent); | |
1102 | ||
c02db8c6 CW |
1103 | vfinfo = nla_nest_start(skb, IFLA_VFINFO_LIST); |
1104 | if (!vfinfo) | |
1105 | goto nla_put_failure; | |
1106 | for (i = 0; i < num_vfs; i++) { | |
1107 | struct ifla_vf_info ivi; | |
1108 | struct ifla_vf_mac vf_mac; | |
1109 | struct ifla_vf_vlan vf_vlan; | |
ed616689 | 1110 | struct ifla_vf_rate vf_rate; |
c02db8c6 | 1111 | struct ifla_vf_tx_rate vf_tx_rate; |
5f8444a3 | 1112 | struct ifla_vf_spoofchk vf_spoofchk; |
1d8faf48 | 1113 | struct ifla_vf_link_state vf_linkstate; |
5f8444a3 GR |
1114 | |
1115 | /* | |
1116 | * Not all SR-IOV capable drivers support the | |
1117 | * spoofcheck query. Preset to -1 so the user | |
1118 | * space tool can detect that the driver didn't | |
1119 | * report anything. | |
1120 | */ | |
1121 | ivi.spoofchk = -1; | |
84d73cd3 | 1122 | memset(ivi.mac, 0, sizeof(ivi.mac)); |
1d8faf48 RE |
1123 | /* The default value for VF link state is "auto" |
1124 | * IFLA_VF_LINK_STATE_AUTO which equals zero | |
1125 | */ | |
1126 | ivi.linkstate = 0; | |
ebc08a6f WM |
1127 | if (dev->netdev_ops->ndo_get_vf_config(dev, i, &ivi)) |
1128 | break; | |
5f8444a3 GR |
1129 | vf_mac.vf = |
1130 | vf_vlan.vf = | |
ed616689 | 1131 | vf_rate.vf = |
5f8444a3 | 1132 | vf_tx_rate.vf = |
1d8faf48 RE |
1133 | vf_spoofchk.vf = |
1134 | vf_linkstate.vf = ivi.vf; | |
5f8444a3 | 1135 | |
c02db8c6 CW |
1136 | memcpy(vf_mac.mac, ivi.mac, sizeof(ivi.mac)); |
1137 | vf_vlan.vlan = ivi.vlan; | |
1138 | vf_vlan.qos = ivi.qos; | |
ed616689 SC |
1139 | vf_tx_rate.rate = ivi.max_tx_rate; |
1140 | vf_rate.min_tx_rate = ivi.min_tx_rate; | |
1141 | vf_rate.max_tx_rate = ivi.max_tx_rate; | |
5f8444a3 | 1142 | vf_spoofchk.setting = ivi.spoofchk; |
1d8faf48 | 1143 | vf_linkstate.link_state = ivi.linkstate; |
c02db8c6 CW |
1144 | vf = nla_nest_start(skb, IFLA_VF_INFO); |
1145 | if (!vf) { | |
1146 | nla_nest_cancel(skb, vfinfo); | |
1147 | goto nla_put_failure; | |
1148 | } | |
a6574349 DM |
1149 | if (nla_put(skb, IFLA_VF_MAC, sizeof(vf_mac), &vf_mac) || |
1150 | nla_put(skb, IFLA_VF_VLAN, sizeof(vf_vlan), &vf_vlan) || | |
ed616689 SC |
1151 | nla_put(skb, IFLA_VF_RATE, sizeof(vf_rate), |
1152 | &vf_rate) || | |
a6574349 DM |
1153 | nla_put(skb, IFLA_VF_TX_RATE, sizeof(vf_tx_rate), |
1154 | &vf_tx_rate) || | |
1155 | nla_put(skb, IFLA_VF_SPOOFCHK, sizeof(vf_spoofchk), | |
1d8faf48 RE |
1156 | &vf_spoofchk) || |
1157 | nla_put(skb, IFLA_VF_LINK_STATE, sizeof(vf_linkstate), | |
1158 | &vf_linkstate)) | |
a6574349 | 1159 | goto nla_put_failure; |
c02db8c6 | 1160 | nla_nest_end(skb, vf); |
ebc08a6f | 1161 | } |
c02db8c6 | 1162 | nla_nest_end(skb, vfinfo); |
ebc08a6f | 1163 | } |
57b61080 | 1164 | |
c53864fd | 1165 | if (rtnl_port_fill(skb, dev, ext_filter_mask)) |
57b61080 SF |
1166 | goto nla_put_failure; |
1167 | ||
ba7d49b1 | 1168 | if (dev->rtnl_link_ops || rtnl_have_link_slave_info(dev)) { |
38f7b870 PM |
1169 | if (rtnl_link_fill(skb, dev) < 0) |
1170 | goto nla_put_failure; | |
1171 | } | |
1172 | ||
d37512a2 ND |
1173 | if (dev->rtnl_link_ops && |
1174 | dev->rtnl_link_ops->get_link_net) { | |
1175 | struct net *link_net = dev->rtnl_link_ops->get_link_net(dev); | |
1176 | ||
1177 | if (!net_eq(dev_net(dev), link_net)) { | |
1178 | int id = peernet2id(dev_net(dev), link_net); | |
1179 | ||
1180 | if (nla_put_s32(skb, IFLA_LINK_NETNSID, id)) | |
1181 | goto nla_put_failure; | |
1182 | } | |
1183 | } | |
1184 | ||
f8ff182c TG |
1185 | if (!(af_spec = nla_nest_start(skb, IFLA_AF_SPEC))) |
1186 | goto nla_put_failure; | |
1187 | ||
1188 | list_for_each_entry(af_ops, &rtnl_af_ops, list) { | |
1189 | if (af_ops->fill_link_af) { | |
1190 | struct nlattr *af; | |
1191 | int err; | |
1192 | ||
1193 | if (!(af = nla_nest_start(skb, af_ops->family))) | |
1194 | goto nla_put_failure; | |
1195 | ||
1196 | err = af_ops->fill_link_af(skb, dev); | |
1197 | ||
1198 | /* | |
1199 | * Caller may return ENODATA to indicate that there | |
1200 | * was no data to be dumped. This is not an error, it | |
1201 | * means we should trim the attribute header and | |
1202 | * continue. | |
1203 | */ | |
1204 | if (err == -ENODATA) | |
1205 | nla_nest_cancel(skb, af); | |
1206 | else if (err < 0) | |
1207 | goto nla_put_failure; | |
1208 | ||
1209 | nla_nest_end(skb, af); | |
1210 | } | |
1211 | } | |
1212 | ||
1213 | nla_nest_end(skb, af_spec); | |
1214 | ||
053c095a JB |
1215 | nlmsg_end(skb, nlh); |
1216 | return 0; | |
b60c5115 TG |
1217 | |
1218 | nla_put_failure: | |
26932566 PM |
1219 | nlmsg_cancel(skb, nlh); |
1220 | return -EMSGSIZE; | |
1da177e4 LT |
1221 | } |
1222 | ||
f7b12606 | 1223 | static const struct nla_policy ifla_policy[IFLA_MAX+1] = { |
5176f91e | 1224 | [IFLA_IFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ-1 }, |
38f7b870 PM |
1225 | [IFLA_ADDRESS] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN }, |
1226 | [IFLA_BROADCAST] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN }, | |
5176f91e | 1227 | [IFLA_MAP] = { .len = sizeof(struct rtnl_link_ifmap) }, |
da5e0494 | 1228 | [IFLA_MTU] = { .type = NLA_U32 }, |
76e87306 | 1229 | [IFLA_LINK] = { .type = NLA_U32 }, |
fbaec0ea | 1230 | [IFLA_MASTER] = { .type = NLA_U32 }, |
9a57247f | 1231 | [IFLA_CARRIER] = { .type = NLA_U8 }, |
da5e0494 TG |
1232 | [IFLA_TXQLEN] = { .type = NLA_U32 }, |
1233 | [IFLA_WEIGHT] = { .type = NLA_U32 }, | |
1234 | [IFLA_OPERSTATE] = { .type = NLA_U8 }, | |
1235 | [IFLA_LINKMODE] = { .type = NLA_U8 }, | |
76e87306 | 1236 | [IFLA_LINKINFO] = { .type = NLA_NESTED }, |
d8a5ec67 | 1237 | [IFLA_NET_NS_PID] = { .type = NLA_U32 }, |
f0630529 | 1238 | [IFLA_NET_NS_FD] = { .type = NLA_U32 }, |
0b815a1a | 1239 | [IFLA_IFALIAS] = { .type = NLA_STRING, .len = IFALIASZ-1 }, |
c02db8c6 | 1240 | [IFLA_VFINFO_LIST] = {. type = NLA_NESTED }, |
57b61080 SF |
1241 | [IFLA_VF_PORTS] = { .type = NLA_NESTED }, |
1242 | [IFLA_PORT_SELF] = { .type = NLA_NESTED }, | |
f8ff182c | 1243 | [IFLA_AF_SPEC] = { .type = NLA_NESTED }, |
115c9b81 | 1244 | [IFLA_EXT_MASK] = { .type = NLA_U32 }, |
edbc0bb3 | 1245 | [IFLA_PROMISCUITY] = { .type = NLA_U32 }, |
76ff5cc9 JP |
1246 | [IFLA_NUM_TX_QUEUES] = { .type = NLA_U32 }, |
1247 | [IFLA_NUM_RX_QUEUES] = { .type = NLA_U32 }, | |
02637fce | 1248 | [IFLA_PHYS_PORT_ID] = { .type = NLA_BINARY, .len = MAX_PHYS_ITEM_ID_LEN }, |
2d3b479d | 1249 | [IFLA_CARRIER_CHANGES] = { .type = NLA_U32 }, /* ignored */ |
82f28412 | 1250 | [IFLA_PHYS_SWITCH_ID] = { .type = NLA_BINARY, .len = MAX_PHYS_ITEM_ID_LEN }, |
317f4810 | 1251 | [IFLA_LINK_NETNSID] = { .type = NLA_S32 }, |
da5e0494 TG |
1252 | }; |
1253 | ||
38f7b870 PM |
1254 | static const struct nla_policy ifla_info_policy[IFLA_INFO_MAX+1] = { |
1255 | [IFLA_INFO_KIND] = { .type = NLA_STRING }, | |
1256 | [IFLA_INFO_DATA] = { .type = NLA_NESTED }, | |
ba7d49b1 JP |
1257 | [IFLA_INFO_SLAVE_KIND] = { .type = NLA_STRING }, |
1258 | [IFLA_INFO_SLAVE_DATA] = { .type = NLA_NESTED }, | |
38f7b870 PM |
1259 | }; |
1260 | ||
c02db8c6 CW |
1261 | static const struct nla_policy ifla_vfinfo_policy[IFLA_VF_INFO_MAX+1] = { |
1262 | [IFLA_VF_INFO] = { .type = NLA_NESTED }, | |
1263 | }; | |
1264 | ||
1265 | static const struct nla_policy ifla_vf_policy[IFLA_VF_MAX+1] = { | |
364d5716 DB |
1266 | [IFLA_VF_MAC] = { .len = sizeof(struct ifla_vf_mac) }, |
1267 | [IFLA_VF_VLAN] = { .len = sizeof(struct ifla_vf_vlan) }, | |
1268 | [IFLA_VF_TX_RATE] = { .len = sizeof(struct ifla_vf_tx_rate) }, | |
1269 | [IFLA_VF_SPOOFCHK] = { .len = sizeof(struct ifla_vf_spoofchk) }, | |
1270 | [IFLA_VF_RATE] = { .len = sizeof(struct ifla_vf_rate) }, | |
1271 | [IFLA_VF_LINK_STATE] = { .len = sizeof(struct ifla_vf_link_state) }, | |
c02db8c6 CW |
1272 | }; |
1273 | ||
57b61080 SF |
1274 | static const struct nla_policy ifla_port_policy[IFLA_PORT_MAX+1] = { |
1275 | [IFLA_PORT_VF] = { .type = NLA_U32 }, | |
1276 | [IFLA_PORT_PROFILE] = { .type = NLA_STRING, | |
1277 | .len = PORT_PROFILE_MAX }, | |
1278 | [IFLA_PORT_VSI_TYPE] = { .type = NLA_BINARY, | |
1279 | .len = sizeof(struct ifla_port_vsi)}, | |
1280 | [IFLA_PORT_INSTANCE_UUID] = { .type = NLA_BINARY, | |
1281 | .len = PORT_UUID_MAX }, | |
1282 | [IFLA_PORT_HOST_UUID] = { .type = NLA_STRING, | |
1283 | .len = PORT_UUID_MAX }, | |
1284 | [IFLA_PORT_REQUEST] = { .type = NLA_U8, }, | |
1285 | [IFLA_PORT_RESPONSE] = { .type = NLA_U16, }, | |
1286 | }; | |
1287 | ||
f7b12606 JP |
1288 | static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb) |
1289 | { | |
1290 | struct net *net = sock_net(skb->sk); | |
1291 | int h, s_h; | |
1292 | int idx = 0, s_idx; | |
1293 | struct net_device *dev; | |
1294 | struct hlist_head *head; | |
1295 | struct nlattr *tb[IFLA_MAX+1]; | |
1296 | u32 ext_filter_mask = 0; | |
973462bb | 1297 | int err; |
e5eca6d4 | 1298 | int hdrlen; |
f7b12606 JP |
1299 | |
1300 | s_h = cb->args[0]; | |
1301 | s_idx = cb->args[1]; | |
1302 | ||
f7b12606 JP |
1303 | cb->seq = net->dev_base_seq; |
1304 | ||
e5eca6d4 MS |
1305 | /* A hack to preserve kernel<->userspace interface. |
1306 | * The correct header is ifinfomsg. It is consistent with rtnl_getlink. | |
1307 | * However, before Linux v3.9 the code here assumed rtgenmsg and that's | |
1308 | * what iproute2 < v3.9.0 used. | |
1309 | * We can detect the old iproute2. Even including the IFLA_EXT_MASK | |
1310 | * attribute, its netlink message is shorter than struct ifinfomsg. | |
1311 | */ | |
1312 | hdrlen = nlmsg_len(cb->nlh) < sizeof(struct ifinfomsg) ? | |
1313 | sizeof(struct rtgenmsg) : sizeof(struct ifinfomsg); | |
1314 | ||
1315 | if (nlmsg_parse(cb->nlh, hdrlen, tb, IFLA_MAX, ifla_policy) >= 0) { | |
f7b12606 JP |
1316 | |
1317 | if (tb[IFLA_EXT_MASK]) | |
1318 | ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]); | |
1319 | } | |
1320 | ||
1321 | for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) { | |
1322 | idx = 0; | |
1323 | head = &net->dev_index_head[h]; | |
cac5e65e | 1324 | hlist_for_each_entry(dev, head, index_hlist) { |
f7b12606 JP |
1325 | if (idx < s_idx) |
1326 | goto cont; | |
973462bb DG |
1327 | err = rtnl_fill_ifinfo(skb, dev, RTM_NEWLINK, |
1328 | NETLINK_CB(cb->skb).portid, | |
1329 | cb->nlh->nlmsg_seq, 0, | |
1330 | NLM_F_MULTI, | |
1331 | ext_filter_mask); | |
1332 | /* If we ran out of room on the first message, | |
1333 | * we're in trouble | |
1334 | */ | |
1335 | WARN_ON((err == -EMSGSIZE) && (skb->len == 0)); | |
1336 | ||
7b46a644 | 1337 | if (err < 0) |
f7b12606 JP |
1338 | goto out; |
1339 | ||
1340 | nl_dump_check_consistent(cb, nlmsg_hdr(skb)); | |
1341 | cont: | |
1342 | idx++; | |
1343 | } | |
1344 | } | |
1345 | out: | |
f7b12606 JP |
1346 | cb->args[1] = idx; |
1347 | cb->args[0] = h; | |
1348 | ||
1349 | return skb->len; | |
1350 | } | |
1351 | ||
1352 | int rtnl_nla_parse_ifla(struct nlattr **tb, const struct nlattr *head, int len) | |
1353 | { | |
1354 | return nla_parse(tb, IFLA_MAX, head, len, ifla_policy); | |
1355 | } | |
1356 | EXPORT_SYMBOL(rtnl_nla_parse_ifla); | |
1357 | ||
81adee47 EB |
1358 | struct net *rtnl_link_get_net(struct net *src_net, struct nlattr *tb[]) |
1359 | { | |
1360 | struct net *net; | |
1361 | /* Examine the link attributes and figure out which | |
1362 | * network namespace we are talking about. | |
1363 | */ | |
1364 | if (tb[IFLA_NET_NS_PID]) | |
1365 | net = get_net_ns_by_pid(nla_get_u32(tb[IFLA_NET_NS_PID])); | |
f0630529 EB |
1366 | else if (tb[IFLA_NET_NS_FD]) |
1367 | net = get_net_ns_by_fd(nla_get_u32(tb[IFLA_NET_NS_FD])); | |
81adee47 EB |
1368 | else |
1369 | net = get_net(src_net); | |
1370 | return net; | |
1371 | } | |
1372 | EXPORT_SYMBOL(rtnl_link_get_net); | |
1373 | ||
1840bb13 TG |
1374 | static int validate_linkmsg(struct net_device *dev, struct nlattr *tb[]) |
1375 | { | |
1376 | if (dev) { | |
1377 | if (tb[IFLA_ADDRESS] && | |
1378 | nla_len(tb[IFLA_ADDRESS]) < dev->addr_len) | |
1379 | return -EINVAL; | |
1380 | ||
1381 | if (tb[IFLA_BROADCAST] && | |
1382 | nla_len(tb[IFLA_BROADCAST]) < dev->addr_len) | |
1383 | return -EINVAL; | |
1384 | } | |
1385 | ||
cf7afbfe TG |
1386 | if (tb[IFLA_AF_SPEC]) { |
1387 | struct nlattr *af; | |
1388 | int rem, err; | |
1389 | ||
1390 | nla_for_each_nested(af, tb[IFLA_AF_SPEC], rem) { | |
1391 | const struct rtnl_af_ops *af_ops; | |
1392 | ||
1393 | if (!(af_ops = rtnl_af_lookup(nla_type(af)))) | |
1394 | return -EAFNOSUPPORT; | |
1395 | ||
1396 | if (!af_ops->set_link_af) | |
1397 | return -EOPNOTSUPP; | |
1398 | ||
1399 | if (af_ops->validate_link_af) { | |
6d3a9a68 | 1400 | err = af_ops->validate_link_af(dev, af); |
cf7afbfe TG |
1401 | if (err < 0) |
1402 | return err; | |
1403 | } | |
1404 | } | |
1405 | } | |
1406 | ||
1840bb13 TG |
1407 | return 0; |
1408 | } | |
1409 | ||
c02db8c6 CW |
1410 | static int do_setvfinfo(struct net_device *dev, struct nlattr *attr) |
1411 | { | |
1412 | int rem, err = -EINVAL; | |
1413 | struct nlattr *vf; | |
1414 | const struct net_device_ops *ops = dev->netdev_ops; | |
1415 | ||
1416 | nla_for_each_nested(vf, attr, rem) { | |
1417 | switch (nla_type(vf)) { | |
1418 | case IFLA_VF_MAC: { | |
1419 | struct ifla_vf_mac *ivm; | |
1420 | ivm = nla_data(vf); | |
1421 | err = -EOPNOTSUPP; | |
1422 | if (ops->ndo_set_vf_mac) | |
1423 | err = ops->ndo_set_vf_mac(dev, ivm->vf, | |
1424 | ivm->mac); | |
1425 | break; | |
1426 | } | |
1427 | case IFLA_VF_VLAN: { | |
1428 | struct ifla_vf_vlan *ivv; | |
1429 | ivv = nla_data(vf); | |
1430 | err = -EOPNOTSUPP; | |
1431 | if (ops->ndo_set_vf_vlan) | |
1432 | err = ops->ndo_set_vf_vlan(dev, ivv->vf, | |
1433 | ivv->vlan, | |
1434 | ivv->qos); | |
1435 | break; | |
1436 | } | |
1437 | case IFLA_VF_TX_RATE: { | |
1438 | struct ifla_vf_tx_rate *ivt; | |
ed616689 | 1439 | struct ifla_vf_info ivf; |
c02db8c6 CW |
1440 | ivt = nla_data(vf); |
1441 | err = -EOPNOTSUPP; | |
ed616689 SC |
1442 | if (ops->ndo_get_vf_config) |
1443 | err = ops->ndo_get_vf_config(dev, ivt->vf, | |
1444 | &ivf); | |
1445 | if (err) | |
1446 | break; | |
1447 | err = -EOPNOTSUPP; | |
1448 | if (ops->ndo_set_vf_rate) | |
1449 | err = ops->ndo_set_vf_rate(dev, ivt->vf, | |
1450 | ivf.min_tx_rate, | |
1451 | ivt->rate); | |
1452 | break; | |
1453 | } | |
1454 | case IFLA_VF_RATE: { | |
1455 | struct ifla_vf_rate *ivt; | |
1456 | ivt = nla_data(vf); | |
1457 | err = -EOPNOTSUPP; | |
1458 | if (ops->ndo_set_vf_rate) | |
1459 | err = ops->ndo_set_vf_rate(dev, ivt->vf, | |
1460 | ivt->min_tx_rate, | |
1461 | ivt->max_tx_rate); | |
c02db8c6 CW |
1462 | break; |
1463 | } | |
5f8444a3 GR |
1464 | case IFLA_VF_SPOOFCHK: { |
1465 | struct ifla_vf_spoofchk *ivs; | |
1466 | ivs = nla_data(vf); | |
1467 | err = -EOPNOTSUPP; | |
1468 | if (ops->ndo_set_vf_spoofchk) | |
1469 | err = ops->ndo_set_vf_spoofchk(dev, ivs->vf, | |
1470 | ivs->setting); | |
1471 | break; | |
1472 | } | |
1d8faf48 RE |
1473 | case IFLA_VF_LINK_STATE: { |
1474 | struct ifla_vf_link_state *ivl; | |
1475 | ivl = nla_data(vf); | |
1476 | err = -EOPNOTSUPP; | |
1477 | if (ops->ndo_set_vf_link_state) | |
1478 | err = ops->ndo_set_vf_link_state(dev, ivl->vf, | |
1479 | ivl->link_state); | |
1480 | break; | |
1481 | } | |
c02db8c6 CW |
1482 | default: |
1483 | err = -EINVAL; | |
1484 | break; | |
1485 | } | |
1486 | if (err) | |
1487 | break; | |
1488 | } | |
1489 | return err; | |
1490 | } | |
1491 | ||
fbaec0ea JP |
1492 | static int do_set_master(struct net_device *dev, int ifindex) |
1493 | { | |
898e5061 | 1494 | struct net_device *upper_dev = netdev_master_upper_dev_get(dev); |
fbaec0ea JP |
1495 | const struct net_device_ops *ops; |
1496 | int err; | |
1497 | ||
898e5061 JP |
1498 | if (upper_dev) { |
1499 | if (upper_dev->ifindex == ifindex) | |
fbaec0ea | 1500 | return 0; |
898e5061 | 1501 | ops = upper_dev->netdev_ops; |
fbaec0ea | 1502 | if (ops->ndo_del_slave) { |
898e5061 | 1503 | err = ops->ndo_del_slave(upper_dev, dev); |
fbaec0ea JP |
1504 | if (err) |
1505 | return err; | |
1506 | } else { | |
1507 | return -EOPNOTSUPP; | |
1508 | } | |
1509 | } | |
1510 | ||
1511 | if (ifindex) { | |
898e5061 JP |
1512 | upper_dev = __dev_get_by_index(dev_net(dev), ifindex); |
1513 | if (!upper_dev) | |
fbaec0ea | 1514 | return -EINVAL; |
898e5061 | 1515 | ops = upper_dev->netdev_ops; |
fbaec0ea | 1516 | if (ops->ndo_add_slave) { |
898e5061 | 1517 | err = ops->ndo_add_slave(upper_dev, dev); |
fbaec0ea JP |
1518 | if (err) |
1519 | return err; | |
1520 | } else { | |
1521 | return -EOPNOTSUPP; | |
1522 | } | |
1523 | } | |
1524 | return 0; | |
1525 | } | |
1526 | ||
90c325e3 | 1527 | #define DO_SETLINK_MODIFIED 0x01 |
ba998906 ND |
1528 | /* notify flag means notify + modified. */ |
1529 | #define DO_SETLINK_NOTIFY 0x03 | |
90f62cf3 EB |
1530 | static int do_setlink(const struct sk_buff *skb, |
1531 | struct net_device *dev, struct ifinfomsg *ifm, | |
90c325e3 | 1532 | struct nlattr **tb, char *ifname, int status) |
1da177e4 | 1533 | { |
d314774c | 1534 | const struct net_device_ops *ops = dev->netdev_ops; |
0157f60c | 1535 | int err; |
1da177e4 | 1536 | |
f0630529 | 1537 | if (tb[IFLA_NET_NS_PID] || tb[IFLA_NET_NS_FD]) { |
81adee47 | 1538 | struct net *net = rtnl_link_get_net(dev_net(dev), tb); |
d8a5ec67 EB |
1539 | if (IS_ERR(net)) { |
1540 | err = PTR_ERR(net); | |
1541 | goto errout; | |
1542 | } | |
90f62cf3 | 1543 | if (!netlink_ns_capable(skb, net->user_ns, CAP_NET_ADMIN)) { |
e0ebde0e | 1544 | put_net(net); |
b51642f6 EB |
1545 | err = -EPERM; |
1546 | goto errout; | |
1547 | } | |
d8a5ec67 EB |
1548 | err = dev_change_net_namespace(dev, net, ifname); |
1549 | put_net(net); | |
1550 | if (err) | |
1551 | goto errout; | |
90c325e3 | 1552 | status |= DO_SETLINK_MODIFIED; |
d8a5ec67 EB |
1553 | } |
1554 | ||
da5e0494 | 1555 | if (tb[IFLA_MAP]) { |
1da177e4 LT |
1556 | struct rtnl_link_ifmap *u_map; |
1557 | struct ifmap k_map; | |
1558 | ||
d314774c | 1559 | if (!ops->ndo_set_config) { |
1da177e4 | 1560 | err = -EOPNOTSUPP; |
0157f60c | 1561 | goto errout; |
1da177e4 LT |
1562 | } |
1563 | ||
1564 | if (!netif_device_present(dev)) { | |
1565 | err = -ENODEV; | |
0157f60c | 1566 | goto errout; |
1da177e4 | 1567 | } |
1da177e4 | 1568 | |
da5e0494 | 1569 | u_map = nla_data(tb[IFLA_MAP]); |
1da177e4 LT |
1570 | k_map.mem_start = (unsigned long) u_map->mem_start; |
1571 | k_map.mem_end = (unsigned long) u_map->mem_end; | |
1572 | k_map.base_addr = (unsigned short) u_map->base_addr; | |
1573 | k_map.irq = (unsigned char) u_map->irq; | |
1574 | k_map.dma = (unsigned char) u_map->dma; | |
1575 | k_map.port = (unsigned char) u_map->port; | |
1576 | ||
d314774c | 1577 | err = ops->ndo_set_config(dev, &k_map); |
da5e0494 | 1578 | if (err < 0) |
0157f60c | 1579 | goto errout; |
1da177e4 | 1580 | |
ba998906 | 1581 | status |= DO_SETLINK_NOTIFY; |
1da177e4 LT |
1582 | } |
1583 | ||
da5e0494 | 1584 | if (tb[IFLA_ADDRESS]) { |
70f8e78e DM |
1585 | struct sockaddr *sa; |
1586 | int len; | |
1587 | ||
70f8e78e DM |
1588 | len = sizeof(sa_family_t) + dev->addr_len; |
1589 | sa = kmalloc(len, GFP_KERNEL); | |
1590 | if (!sa) { | |
1591 | err = -ENOMEM; | |
0157f60c | 1592 | goto errout; |
70f8e78e DM |
1593 | } |
1594 | sa->sa_family = dev->type; | |
da5e0494 | 1595 | memcpy(sa->sa_data, nla_data(tb[IFLA_ADDRESS]), |
70f8e78e | 1596 | dev->addr_len); |
e7c3273e | 1597 | err = dev_set_mac_address(dev, sa); |
70f8e78e | 1598 | kfree(sa); |
1da177e4 | 1599 | if (err) |
0157f60c | 1600 | goto errout; |
90c325e3 | 1601 | status |= DO_SETLINK_MODIFIED; |
1da177e4 LT |
1602 | } |
1603 | ||
da5e0494 TG |
1604 | if (tb[IFLA_MTU]) { |
1605 | err = dev_set_mtu(dev, nla_get_u32(tb[IFLA_MTU])); | |
1606 | if (err < 0) | |
0157f60c | 1607 | goto errout; |
90c325e3 | 1608 | status |= DO_SETLINK_MODIFIED; |
1da177e4 LT |
1609 | } |
1610 | ||
cbda10fa VD |
1611 | if (tb[IFLA_GROUP]) { |
1612 | dev_set_group(dev, nla_get_u32(tb[IFLA_GROUP])); | |
ba998906 | 1613 | status |= DO_SETLINK_NOTIFY; |
cbda10fa VD |
1614 | } |
1615 | ||
da5e0494 TG |
1616 | /* |
1617 | * Interface selected by interface index but interface | |
1618 | * name provided implies that a name change has been | |
1619 | * requested. | |
1620 | */ | |
51055be8 | 1621 | if (ifm->ifi_index > 0 && ifname[0]) { |
da5e0494 TG |
1622 | err = dev_change_name(dev, ifname); |
1623 | if (err < 0) | |
0157f60c | 1624 | goto errout; |
90c325e3 | 1625 | status |= DO_SETLINK_MODIFIED; |
1da177e4 LT |
1626 | } |
1627 | ||
0b815a1a SH |
1628 | if (tb[IFLA_IFALIAS]) { |
1629 | err = dev_set_alias(dev, nla_data(tb[IFLA_IFALIAS]), | |
1630 | nla_len(tb[IFLA_IFALIAS])); | |
1631 | if (err < 0) | |
1632 | goto errout; | |
ba998906 | 1633 | status |= DO_SETLINK_NOTIFY; |
0b815a1a SH |
1634 | } |
1635 | ||
da5e0494 TG |
1636 | if (tb[IFLA_BROADCAST]) { |
1637 | nla_memcpy(dev->broadcast, tb[IFLA_BROADCAST], dev->addr_len); | |
e7c3273e | 1638 | call_netdevice_notifiers(NETDEV_CHANGEADDR, dev); |
1da177e4 LT |
1639 | } |
1640 | ||
83b496e9 | 1641 | if (ifm->ifi_flags || ifm->ifi_change) { |
3729d502 | 1642 | err = dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm)); |
5f9021cf JB |
1643 | if (err < 0) |
1644 | goto errout; | |
83b496e9 | 1645 | } |
1da177e4 | 1646 | |
fbaec0ea JP |
1647 | if (tb[IFLA_MASTER]) { |
1648 | err = do_set_master(dev, nla_get_u32(tb[IFLA_MASTER])); | |
1649 | if (err) | |
1650 | goto errout; | |
90c325e3 | 1651 | status |= DO_SETLINK_MODIFIED; |
fbaec0ea JP |
1652 | } |
1653 | ||
9a57247f JP |
1654 | if (tb[IFLA_CARRIER]) { |
1655 | err = dev_change_carrier(dev, nla_get_u8(tb[IFLA_CARRIER])); | |
1656 | if (err) | |
1657 | goto errout; | |
90c325e3 | 1658 | status |= DO_SETLINK_MODIFIED; |
9a57247f JP |
1659 | } |
1660 | ||
5d1180fc ND |
1661 | if (tb[IFLA_TXQLEN]) { |
1662 | unsigned long value = nla_get_u32(tb[IFLA_TXQLEN]); | |
1663 | ||
1664 | if (dev->tx_queue_len ^ value) | |
ba998906 | 1665 | status |= DO_SETLINK_NOTIFY; |
5d1180fc ND |
1666 | |
1667 | dev->tx_queue_len = value; | |
1668 | } | |
b00055aa | 1669 | |
da5e0494 | 1670 | if (tb[IFLA_OPERSTATE]) |
93b2d4a2 | 1671 | set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE])); |
b00055aa | 1672 | |
da5e0494 | 1673 | if (tb[IFLA_LINKMODE]) { |
1889b0e7 ND |
1674 | unsigned char value = nla_get_u8(tb[IFLA_LINKMODE]); |
1675 | ||
93b2d4a2 | 1676 | write_lock_bh(&dev_base_lock); |
1889b0e7 | 1677 | if (dev->link_mode ^ value) |
ba998906 | 1678 | status |= DO_SETLINK_NOTIFY; |
1889b0e7 | 1679 | dev->link_mode = value; |
93b2d4a2 | 1680 | write_unlock_bh(&dev_base_lock); |
b00055aa SR |
1681 | } |
1682 | ||
c02db8c6 CW |
1683 | if (tb[IFLA_VFINFO_LIST]) { |
1684 | struct nlattr *attr; | |
1685 | int rem; | |
1686 | nla_for_each_nested(attr, tb[IFLA_VFINFO_LIST], rem) { | |
253683bb DH |
1687 | if (nla_type(attr) != IFLA_VF_INFO) { |
1688 | err = -EINVAL; | |
c02db8c6 | 1689 | goto errout; |
253683bb | 1690 | } |
c02db8c6 CW |
1691 | err = do_setvfinfo(dev, attr); |
1692 | if (err < 0) | |
1693 | goto errout; | |
ba998906 | 1694 | status |= DO_SETLINK_NOTIFY; |
c02db8c6 | 1695 | } |
ebc08a6f | 1696 | } |
1da177e4 LT |
1697 | err = 0; |
1698 | ||
57b61080 SF |
1699 | if (tb[IFLA_VF_PORTS]) { |
1700 | struct nlattr *port[IFLA_PORT_MAX+1]; | |
1701 | struct nlattr *attr; | |
1702 | int vf; | |
1703 | int rem; | |
1704 | ||
1705 | err = -EOPNOTSUPP; | |
1706 | if (!ops->ndo_set_vf_port) | |
1707 | goto errout; | |
1708 | ||
1709 | nla_for_each_nested(attr, tb[IFLA_VF_PORTS], rem) { | |
1710 | if (nla_type(attr) != IFLA_VF_PORT) | |
1711 | continue; | |
1712 | err = nla_parse_nested(port, IFLA_PORT_MAX, | |
1713 | attr, ifla_port_policy); | |
1714 | if (err < 0) | |
1715 | goto errout; | |
1716 | if (!port[IFLA_PORT_VF]) { | |
1717 | err = -EOPNOTSUPP; | |
1718 | goto errout; | |
1719 | } | |
1720 | vf = nla_get_u32(port[IFLA_PORT_VF]); | |
1721 | err = ops->ndo_set_vf_port(dev, vf, port); | |
1722 | if (err < 0) | |
1723 | goto errout; | |
ba998906 | 1724 | status |= DO_SETLINK_NOTIFY; |
57b61080 SF |
1725 | } |
1726 | } | |
1727 | err = 0; | |
1728 | ||
1729 | if (tb[IFLA_PORT_SELF]) { | |
1730 | struct nlattr *port[IFLA_PORT_MAX+1]; | |
1731 | ||
1732 | err = nla_parse_nested(port, IFLA_PORT_MAX, | |
1733 | tb[IFLA_PORT_SELF], ifla_port_policy); | |
1734 | if (err < 0) | |
1735 | goto errout; | |
1736 | ||
1737 | err = -EOPNOTSUPP; | |
1738 | if (ops->ndo_set_vf_port) | |
1739 | err = ops->ndo_set_vf_port(dev, PORT_SELF_VF, port); | |
1740 | if (err < 0) | |
1741 | goto errout; | |
ba998906 | 1742 | status |= DO_SETLINK_NOTIFY; |
57b61080 | 1743 | } |
f8ff182c TG |
1744 | |
1745 | if (tb[IFLA_AF_SPEC]) { | |
1746 | struct nlattr *af; | |
1747 | int rem; | |
1748 | ||
1749 | nla_for_each_nested(af, tb[IFLA_AF_SPEC], rem) { | |
1750 | const struct rtnl_af_ops *af_ops; | |
1751 | ||
1752 | if (!(af_ops = rtnl_af_lookup(nla_type(af)))) | |
cf7afbfe | 1753 | BUG(); |
f8ff182c | 1754 | |
cf7afbfe | 1755 | err = af_ops->set_link_af(dev, af); |
f8ff182c TG |
1756 | if (err < 0) |
1757 | goto errout; | |
1758 | ||
ba998906 | 1759 | status |= DO_SETLINK_NOTIFY; |
f8ff182c TG |
1760 | } |
1761 | } | |
57b61080 SF |
1762 | err = 0; |
1763 | ||
0157f60c | 1764 | errout: |
ba998906 ND |
1765 | if (status & DO_SETLINK_MODIFIED) { |
1766 | if (status & DO_SETLINK_NOTIFY) | |
1767 | netdev_state_change(dev); | |
1768 | ||
1769 | if (err < 0) | |
1770 | 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", | |
1771 | dev->name); | |
1772 | } | |
da5e0494 | 1773 | |
0157f60c PM |
1774 | return err; |
1775 | } | |
1da177e4 | 1776 | |
661d2967 | 1777 | static int rtnl_setlink(struct sk_buff *skb, struct nlmsghdr *nlh) |
0157f60c | 1778 | { |
3b1e0a65 | 1779 | struct net *net = sock_net(skb->sk); |
0157f60c PM |
1780 | struct ifinfomsg *ifm; |
1781 | struct net_device *dev; | |
1782 | int err; | |
1783 | struct nlattr *tb[IFLA_MAX+1]; | |
1784 | char ifname[IFNAMSIZ]; | |
1785 | ||
1786 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); | |
1787 | if (err < 0) | |
1788 | goto errout; | |
1789 | ||
1790 | if (tb[IFLA_IFNAME]) | |
1791 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
1792 | else | |
1793 | ifname[0] = '\0'; | |
1794 | ||
1795 | err = -EINVAL; | |
1796 | ifm = nlmsg_data(nlh); | |
1797 | if (ifm->ifi_index > 0) | |
a3d12891 | 1798 | dev = __dev_get_by_index(net, ifm->ifi_index); |
0157f60c | 1799 | else if (tb[IFLA_IFNAME]) |
a3d12891 | 1800 | dev = __dev_get_by_name(net, ifname); |
0157f60c PM |
1801 | else |
1802 | goto errout; | |
1803 | ||
1804 | if (dev == NULL) { | |
1805 | err = -ENODEV; | |
1806 | goto errout; | |
1807 | } | |
1808 | ||
e0d087af ED |
1809 | err = validate_linkmsg(dev, tb); |
1810 | if (err < 0) | |
a3d12891 | 1811 | goto errout; |
0157f60c | 1812 | |
90f62cf3 | 1813 | err = do_setlink(skb, dev, ifm, tb, ifname, 0); |
da5e0494 | 1814 | errout: |
1da177e4 LT |
1815 | return err; |
1816 | } | |
1817 | ||
661d2967 | 1818 | static int rtnl_dellink(struct sk_buff *skb, struct nlmsghdr *nlh) |
38f7b870 | 1819 | { |
3b1e0a65 | 1820 | struct net *net = sock_net(skb->sk); |
38f7b870 PM |
1821 | const struct rtnl_link_ops *ops; |
1822 | struct net_device *dev; | |
1823 | struct ifinfomsg *ifm; | |
1824 | char ifname[IFNAMSIZ]; | |
1825 | struct nlattr *tb[IFLA_MAX+1]; | |
1826 | int err; | |
226bd341 | 1827 | LIST_HEAD(list_kill); |
38f7b870 PM |
1828 | |
1829 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); | |
1830 | if (err < 0) | |
1831 | return err; | |
1832 | ||
1833 | if (tb[IFLA_IFNAME]) | |
1834 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
1835 | ||
1836 | ifm = nlmsg_data(nlh); | |
1837 | if (ifm->ifi_index > 0) | |
881d966b | 1838 | dev = __dev_get_by_index(net, ifm->ifi_index); |
38f7b870 | 1839 | else if (tb[IFLA_IFNAME]) |
881d966b | 1840 | dev = __dev_get_by_name(net, ifname); |
38f7b870 PM |
1841 | else |
1842 | return -EINVAL; | |
1843 | ||
1844 | if (!dev) | |
1845 | return -ENODEV; | |
1846 | ||
1847 | ops = dev->rtnl_link_ops; | |
b0ab2fab | 1848 | if (!ops || !ops->dellink) |
38f7b870 PM |
1849 | return -EOPNOTSUPP; |
1850 | ||
226bd341 ED |
1851 | ops->dellink(dev, &list_kill); |
1852 | unregister_netdevice_many(&list_kill); | |
38f7b870 PM |
1853 | return 0; |
1854 | } | |
1855 | ||
3729d502 PM |
1856 | int rtnl_configure_link(struct net_device *dev, const struct ifinfomsg *ifm) |
1857 | { | |
1858 | unsigned int old_flags; | |
1859 | int err; | |
1860 | ||
1861 | old_flags = dev->flags; | |
1862 | if (ifm && (ifm->ifi_flags || ifm->ifi_change)) { | |
1863 | err = __dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm)); | |
1864 | if (err < 0) | |
1865 | return err; | |
1866 | } | |
1867 | ||
1868 | dev->rtnl_link_state = RTNL_LINK_INITIALIZED; | |
3729d502 | 1869 | |
a528c219 | 1870 | __dev_notify_flags(dev, old_flags, ~0U); |
3729d502 PM |
1871 | return 0; |
1872 | } | |
1873 | EXPORT_SYMBOL(rtnl_configure_link); | |
1874 | ||
c0713563 | 1875 | struct net_device *rtnl_create_link(struct net *net, |
5517750f TG |
1876 | char *ifname, unsigned char name_assign_type, |
1877 | const struct rtnl_link_ops *ops, struct nlattr *tb[]) | |
e7199288 PE |
1878 | { |
1879 | int err; | |
1880 | struct net_device *dev; | |
d40156aa JP |
1881 | unsigned int num_tx_queues = 1; |
1882 | unsigned int num_rx_queues = 1; | |
e7199288 | 1883 | |
76ff5cc9 JP |
1884 | if (tb[IFLA_NUM_TX_QUEUES]) |
1885 | num_tx_queues = nla_get_u32(tb[IFLA_NUM_TX_QUEUES]); | |
1886 | else if (ops->get_num_tx_queues) | |
d40156aa | 1887 | num_tx_queues = ops->get_num_tx_queues(); |
76ff5cc9 JP |
1888 | |
1889 | if (tb[IFLA_NUM_RX_QUEUES]) | |
1890 | num_rx_queues = nla_get_u32(tb[IFLA_NUM_RX_QUEUES]); | |
1891 | else if (ops->get_num_rx_queues) | |
d40156aa | 1892 | num_rx_queues = ops->get_num_rx_queues(); |
efacb309 | 1893 | |
e7199288 | 1894 | err = -ENOMEM; |
5517750f | 1895 | dev = alloc_netdev_mqs(ops->priv_size, ifname, name_assign_type, |
c835a677 | 1896 | ops->setup, num_tx_queues, num_rx_queues); |
e7199288 PE |
1897 | if (!dev) |
1898 | goto err; | |
1899 | ||
81adee47 EB |
1900 | dev_net_set(dev, net); |
1901 | dev->rtnl_link_ops = ops; | |
3729d502 | 1902 | dev->rtnl_link_state = RTNL_LINK_INITIALIZING; |
81adee47 | 1903 | |
e7199288 PE |
1904 | if (tb[IFLA_MTU]) |
1905 | dev->mtu = nla_get_u32(tb[IFLA_MTU]); | |
2afb9b53 | 1906 | if (tb[IFLA_ADDRESS]) { |
e7199288 PE |
1907 | memcpy(dev->dev_addr, nla_data(tb[IFLA_ADDRESS]), |
1908 | nla_len(tb[IFLA_ADDRESS])); | |
2afb9b53 JP |
1909 | dev->addr_assign_type = NET_ADDR_SET; |
1910 | } | |
e7199288 PE |
1911 | if (tb[IFLA_BROADCAST]) |
1912 | memcpy(dev->broadcast, nla_data(tb[IFLA_BROADCAST]), | |
1913 | nla_len(tb[IFLA_BROADCAST])); | |
1914 | if (tb[IFLA_TXQLEN]) | |
1915 | dev->tx_queue_len = nla_get_u32(tb[IFLA_TXQLEN]); | |
1916 | if (tb[IFLA_OPERSTATE]) | |
93b2d4a2 | 1917 | set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE])); |
e7199288 PE |
1918 | if (tb[IFLA_LINKMODE]) |
1919 | dev->link_mode = nla_get_u8(tb[IFLA_LINKMODE]); | |
ffa934f1 PM |
1920 | if (tb[IFLA_GROUP]) |
1921 | dev_set_group(dev, nla_get_u32(tb[IFLA_GROUP])); | |
e7199288 PE |
1922 | |
1923 | return dev; | |
1924 | ||
e7199288 PE |
1925 | err: |
1926 | return ERR_PTR(err); | |
1927 | } | |
e0d087af | 1928 | EXPORT_SYMBOL(rtnl_create_link); |
e7199288 | 1929 | |
90f62cf3 EB |
1930 | static int rtnl_group_changelink(const struct sk_buff *skb, |
1931 | struct net *net, int group, | |
e7ed828f VD |
1932 | struct ifinfomsg *ifm, |
1933 | struct nlattr **tb) | |
1934 | { | |
1935 | struct net_device *dev; | |
1936 | int err; | |
1937 | ||
1938 | for_each_netdev(net, dev) { | |
1939 | if (dev->group == group) { | |
90f62cf3 | 1940 | err = do_setlink(skb, dev, ifm, tb, NULL, 0); |
e7ed828f VD |
1941 | if (err < 0) |
1942 | return err; | |
1943 | } | |
1944 | } | |
1945 | ||
1946 | return 0; | |
1947 | } | |
1948 | ||
661d2967 | 1949 | static int rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh) |
38f7b870 | 1950 | { |
3b1e0a65 | 1951 | struct net *net = sock_net(skb->sk); |
38f7b870 | 1952 | const struct rtnl_link_ops *ops; |
ba7d49b1 | 1953 | const struct rtnl_link_ops *m_ops = NULL; |
38f7b870 | 1954 | struct net_device *dev; |
ba7d49b1 | 1955 | struct net_device *master_dev = NULL; |
38f7b870 PM |
1956 | struct ifinfomsg *ifm; |
1957 | char kind[MODULE_NAME_LEN]; | |
1958 | char ifname[IFNAMSIZ]; | |
1959 | struct nlattr *tb[IFLA_MAX+1]; | |
1960 | struct nlattr *linkinfo[IFLA_INFO_MAX+1]; | |
5517750f | 1961 | unsigned char name_assign_type = NET_NAME_USER; |
38f7b870 PM |
1962 | int err; |
1963 | ||
95a5afca | 1964 | #ifdef CONFIG_MODULES |
38f7b870 | 1965 | replay: |
8072f085 | 1966 | #endif |
38f7b870 PM |
1967 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); |
1968 | if (err < 0) | |
1969 | return err; | |
1970 | ||
1971 | if (tb[IFLA_IFNAME]) | |
1972 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
1973 | else | |
1974 | ifname[0] = '\0'; | |
1975 | ||
1976 | ifm = nlmsg_data(nlh); | |
1977 | if (ifm->ifi_index > 0) | |
881d966b | 1978 | dev = __dev_get_by_index(net, ifm->ifi_index); |
e7ed828f VD |
1979 | else { |
1980 | if (ifname[0]) | |
1981 | dev = __dev_get_by_name(net, ifname); | |
e7ed828f VD |
1982 | else |
1983 | dev = NULL; | |
1984 | } | |
38f7b870 | 1985 | |
ba7d49b1 JP |
1986 | if (dev) { |
1987 | master_dev = netdev_master_upper_dev_get(dev); | |
1988 | if (master_dev) | |
1989 | m_ops = master_dev->rtnl_link_ops; | |
1990 | } | |
1991 | ||
e0d087af ED |
1992 | err = validate_linkmsg(dev, tb); |
1993 | if (err < 0) | |
1840bb13 TG |
1994 | return err; |
1995 | ||
38f7b870 PM |
1996 | if (tb[IFLA_LINKINFO]) { |
1997 | err = nla_parse_nested(linkinfo, IFLA_INFO_MAX, | |
1998 | tb[IFLA_LINKINFO], ifla_info_policy); | |
1999 | if (err < 0) | |
2000 | return err; | |
2001 | } else | |
2002 | memset(linkinfo, 0, sizeof(linkinfo)); | |
2003 | ||
2004 | if (linkinfo[IFLA_INFO_KIND]) { | |
2005 | nla_strlcpy(kind, linkinfo[IFLA_INFO_KIND], sizeof(kind)); | |
2006 | ops = rtnl_link_ops_get(kind); | |
2007 | } else { | |
2008 | kind[0] = '\0'; | |
2009 | ops = NULL; | |
2010 | } | |
2011 | ||
2012 | if (1) { | |
4e10fd5b SL |
2013 | struct nlattr *attr[ops ? ops->maxtype + 1 : 1]; |
2014 | struct nlattr *slave_attr[m_ops ? m_ops->slave_maxtype + 1 : 1]; | |
ba7d49b1 JP |
2015 | struct nlattr **data = NULL; |
2016 | struct nlattr **slave_data = NULL; | |
317f4810 | 2017 | struct net *dest_net, *link_net = NULL; |
38f7b870 PM |
2018 | |
2019 | if (ops) { | |
2020 | if (ops->maxtype && linkinfo[IFLA_INFO_DATA]) { | |
2021 | err = nla_parse_nested(attr, ops->maxtype, | |
2022 | linkinfo[IFLA_INFO_DATA], | |
2023 | ops->policy); | |
2024 | if (err < 0) | |
2025 | return err; | |
2026 | data = attr; | |
2027 | } | |
2028 | if (ops->validate) { | |
2029 | err = ops->validate(tb, data); | |
2030 | if (err < 0) | |
2031 | return err; | |
2032 | } | |
2033 | } | |
2034 | ||
ba7d49b1 JP |
2035 | if (m_ops) { |
2036 | if (m_ops->slave_maxtype && | |
2037 | linkinfo[IFLA_INFO_SLAVE_DATA]) { | |
2038 | err = nla_parse_nested(slave_attr, | |
2039 | m_ops->slave_maxtype, | |
2040 | linkinfo[IFLA_INFO_SLAVE_DATA], | |
2041 | m_ops->slave_policy); | |
2042 | if (err < 0) | |
2043 | return err; | |
2044 | slave_data = slave_attr; | |
2045 | } | |
2046 | if (m_ops->slave_validate) { | |
2047 | err = m_ops->slave_validate(tb, slave_data); | |
2048 | if (err < 0) | |
2049 | return err; | |
2050 | } | |
2051 | } | |
2052 | ||
38f7b870 | 2053 | if (dev) { |
90c325e3 | 2054 | int status = 0; |
38f7b870 PM |
2055 | |
2056 | if (nlh->nlmsg_flags & NLM_F_EXCL) | |
2057 | return -EEXIST; | |
2058 | if (nlh->nlmsg_flags & NLM_F_REPLACE) | |
2059 | return -EOPNOTSUPP; | |
2060 | ||
2061 | if (linkinfo[IFLA_INFO_DATA]) { | |
2062 | if (!ops || ops != dev->rtnl_link_ops || | |
2063 | !ops->changelink) | |
2064 | return -EOPNOTSUPP; | |
2065 | ||
2066 | err = ops->changelink(dev, tb, data); | |
2067 | if (err < 0) | |
2068 | return err; | |
ba998906 | 2069 | status |= DO_SETLINK_NOTIFY; |
38f7b870 PM |
2070 | } |
2071 | ||
ba7d49b1 JP |
2072 | if (linkinfo[IFLA_INFO_SLAVE_DATA]) { |
2073 | if (!m_ops || !m_ops->slave_changelink) | |
2074 | return -EOPNOTSUPP; | |
2075 | ||
2076 | err = m_ops->slave_changelink(master_dev, dev, | |
2077 | tb, slave_data); | |
2078 | if (err < 0) | |
2079 | return err; | |
ba998906 | 2080 | status |= DO_SETLINK_NOTIFY; |
ba7d49b1 JP |
2081 | } |
2082 | ||
90c325e3 | 2083 | return do_setlink(skb, dev, ifm, tb, ifname, status); |
38f7b870 PM |
2084 | } |
2085 | ||
ffa934f1 PM |
2086 | if (!(nlh->nlmsg_flags & NLM_F_CREATE)) { |
2087 | if (ifm->ifi_index == 0 && tb[IFLA_GROUP]) | |
90f62cf3 | 2088 | return rtnl_group_changelink(skb, net, |
ffa934f1 PM |
2089 | nla_get_u32(tb[IFLA_GROUP]), |
2090 | ifm, tb); | |
38f7b870 | 2091 | return -ENODEV; |
ffa934f1 | 2092 | } |
38f7b870 | 2093 | |
0e06877c | 2094 | if (tb[IFLA_MAP] || tb[IFLA_MASTER] || tb[IFLA_PROTINFO]) |
38f7b870 PM |
2095 | return -EOPNOTSUPP; |
2096 | ||
2097 | if (!ops) { | |
95a5afca | 2098 | #ifdef CONFIG_MODULES |
38f7b870 PM |
2099 | if (kind[0]) { |
2100 | __rtnl_unlock(); | |
2101 | request_module("rtnl-link-%s", kind); | |
2102 | rtnl_lock(); | |
2103 | ops = rtnl_link_ops_get(kind); | |
2104 | if (ops) | |
2105 | goto replay; | |
2106 | } | |
2107 | #endif | |
2108 | return -EOPNOTSUPP; | |
2109 | } | |
2110 | ||
b0ab2fab JP |
2111 | if (!ops->setup) |
2112 | return -EOPNOTSUPP; | |
2113 | ||
5517750f | 2114 | if (!ifname[0]) { |
38f7b870 | 2115 | snprintf(ifname, IFNAMSIZ, "%s%%d", ops->kind); |
5517750f TG |
2116 | name_assign_type = NET_NAME_ENUM; |
2117 | } | |
e7199288 | 2118 | |
81adee47 | 2119 | dest_net = rtnl_link_get_net(net, tb); |
13ad1774 EB |
2120 | if (IS_ERR(dest_net)) |
2121 | return PTR_ERR(dest_net); | |
2122 | ||
505ce415 EB |
2123 | err = -EPERM; |
2124 | if (!netlink_ns_capable(skb, dest_net->user_ns, CAP_NET_ADMIN)) | |
2125 | goto out; | |
2126 | ||
317f4810 ND |
2127 | if (tb[IFLA_LINK_NETNSID]) { |
2128 | int id = nla_get_s32(tb[IFLA_LINK_NETNSID]); | |
2129 | ||
2130 | link_net = get_net_ns_by_id(dest_net, id); | |
2131 | if (!link_net) { | |
2132 | err = -EINVAL; | |
2133 | goto out; | |
2134 | } | |
06615bed EB |
2135 | err = -EPERM; |
2136 | if (!netlink_ns_capable(skb, link_net->user_ns, CAP_NET_ADMIN)) | |
2137 | goto out; | |
317f4810 ND |
2138 | } |
2139 | ||
2140 | dev = rtnl_create_link(link_net ? : dest_net, ifname, | |
2141 | name_assign_type, ops, tb); | |
9c7dafbf | 2142 | if (IS_ERR(dev)) { |
e7199288 | 2143 | err = PTR_ERR(dev); |
9c7dafbf PE |
2144 | goto out; |
2145 | } | |
2146 | ||
2147 | dev->ifindex = ifm->ifi_index; | |
2148 | ||
0e0eee24 | 2149 | if (ops->newlink) { |
7b4ce694 | 2150 | err = ops->newlink(link_net ? : net, dev, tb, data); |
0e0eee24 | 2151 | /* Drivers should call free_netdev() in ->destructor |
e51fb152 CW |
2152 | * and unregister it on failure after registration |
2153 | * so that device could be finally freed in rtnl_unlock. | |
0e0eee24 | 2154 | */ |
e51fb152 CW |
2155 | if (err < 0) { |
2156 | /* If device is not registered at all, free it now */ | |
2157 | if (dev->reg_state == NETREG_UNINITIALIZED) | |
2158 | free_netdev(dev); | |
0e0eee24 | 2159 | goto out; |
e51fb152 | 2160 | } |
0e0eee24 | 2161 | } else { |
2d85cba2 | 2162 | err = register_netdevice(dev); |
0e0eee24 CW |
2163 | if (err < 0) { |
2164 | free_netdev(dev); | |
2165 | goto out; | |
2166 | } | |
fce9b9be | 2167 | } |
3729d502 | 2168 | err = rtnl_configure_link(dev, ifm); |
317f4810 | 2169 | if (err < 0) { |
7afb8886 WC |
2170 | if (ops->newlink) { |
2171 | LIST_HEAD(list_kill); | |
2172 | ||
2173 | ops->dellink(dev, &list_kill); | |
2174 | unregister_netdevice_many(&list_kill); | |
2175 | } else { | |
2176 | unregister_netdevice(dev); | |
2177 | } | |
317f4810 ND |
2178 | goto out; |
2179 | } | |
2180 | ||
bdef279b | 2181 | if (link_net) { |
317f4810 | 2182 | err = dev_change_net_namespace(dev, dest_net, ifname); |
bdef279b ND |
2183 | if (err < 0) |
2184 | unregister_netdevice(dev); | |
2185 | } | |
3729d502 | 2186 | out: |
317f4810 ND |
2187 | if (link_net) |
2188 | put_net(link_net); | |
81adee47 | 2189 | put_net(dest_net); |
38f7b870 PM |
2190 | return err; |
2191 | } | |
2192 | } | |
2193 | ||
661d2967 | 2194 | static int rtnl_getlink(struct sk_buff *skb, struct nlmsghdr* nlh) |
711e2c33 | 2195 | { |
3b1e0a65 | 2196 | struct net *net = sock_net(skb->sk); |
b60c5115 | 2197 | struct ifinfomsg *ifm; |
a3d12891 | 2198 | char ifname[IFNAMSIZ]; |
b60c5115 TG |
2199 | struct nlattr *tb[IFLA_MAX+1]; |
2200 | struct net_device *dev = NULL; | |
2201 | struct sk_buff *nskb; | |
339bf98f | 2202 | int err; |
115c9b81 | 2203 | u32 ext_filter_mask = 0; |
711e2c33 | 2204 | |
b60c5115 TG |
2205 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); |
2206 | if (err < 0) | |
9918f230 | 2207 | return err; |
b60c5115 | 2208 | |
a3d12891 ED |
2209 | if (tb[IFLA_IFNAME]) |
2210 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
2211 | ||
115c9b81 GR |
2212 | if (tb[IFLA_EXT_MASK]) |
2213 | ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]); | |
2214 | ||
b60c5115 | 2215 | ifm = nlmsg_data(nlh); |
a3d12891 ED |
2216 | if (ifm->ifi_index > 0) |
2217 | dev = __dev_get_by_index(net, ifm->ifi_index); | |
2218 | else if (tb[IFLA_IFNAME]) | |
2219 | dev = __dev_get_by_name(net, ifname); | |
2220 | else | |
711e2c33 | 2221 | return -EINVAL; |
711e2c33 | 2222 | |
a3d12891 ED |
2223 | if (dev == NULL) |
2224 | return -ENODEV; | |
2225 | ||
115c9b81 | 2226 | nskb = nlmsg_new(if_nlmsg_size(dev, ext_filter_mask), GFP_KERNEL); |
a3d12891 ED |
2227 | if (nskb == NULL) |
2228 | return -ENOBUFS; | |
b60c5115 | 2229 | |
15e47304 | 2230 | err = rtnl_fill_ifinfo(nskb, dev, RTM_NEWLINK, NETLINK_CB(skb).portid, |
115c9b81 | 2231 | nlh->nlmsg_seq, 0, 0, ext_filter_mask); |
26932566 PM |
2232 | if (err < 0) { |
2233 | /* -EMSGSIZE implies BUG in if_nlmsg_size */ | |
2234 | WARN_ON(err == -EMSGSIZE); | |
2235 | kfree_skb(nskb); | |
a3d12891 | 2236 | } else |
15e47304 | 2237 | err = rtnl_unicast(nskb, net, NETLINK_CB(skb).portid); |
711e2c33 | 2238 | |
b60c5115 | 2239 | return err; |
711e2c33 | 2240 | } |
711e2c33 | 2241 | |
115c9b81 | 2242 | static u16 rtnl_calcit(struct sk_buff *skb, struct nlmsghdr *nlh) |
c7ac8679 | 2243 | { |
115c9b81 GR |
2244 | struct net *net = sock_net(skb->sk); |
2245 | struct net_device *dev; | |
2246 | struct nlattr *tb[IFLA_MAX+1]; | |
2247 | u32 ext_filter_mask = 0; | |
2248 | u16 min_ifinfo_dump_size = 0; | |
e5eca6d4 MS |
2249 | int hdrlen; |
2250 | ||
2251 | /* Same kernel<->userspace interface hack as in rtnl_dump_ifinfo. */ | |
2252 | hdrlen = nlmsg_len(nlh) < sizeof(struct ifinfomsg) ? | |
2253 | sizeof(struct rtgenmsg) : sizeof(struct ifinfomsg); | |
115c9b81 | 2254 | |
e5eca6d4 | 2255 | if (nlmsg_parse(nlh, hdrlen, tb, IFLA_MAX, ifla_policy) >= 0) { |
a4b64fbe ED |
2256 | if (tb[IFLA_EXT_MASK]) |
2257 | ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]); | |
2258 | } | |
115c9b81 GR |
2259 | |
2260 | if (!ext_filter_mask) | |
2261 | return NLMSG_GOODSIZE; | |
2262 | /* | |
2263 | * traverse the list of net devices and compute the minimum | |
2264 | * buffer size based upon the filter mask. | |
2265 | */ | |
2266 | list_for_each_entry(dev, &net->dev_base_head, dev_list) { | |
2267 | min_ifinfo_dump_size = max_t(u16, min_ifinfo_dump_size, | |
2268 | if_nlmsg_size(dev, | |
2269 | ext_filter_mask)); | |
2270 | } | |
2271 | ||
c7ac8679 GR |
2272 | return min_ifinfo_dump_size; |
2273 | } | |
2274 | ||
42bad1da | 2275 | static int rtnl_dump_all(struct sk_buff *skb, struct netlink_callback *cb) |
1da177e4 LT |
2276 | { |
2277 | int idx; | |
2278 | int s_idx = cb->family; | |
2279 | ||
2280 | if (s_idx == 0) | |
2281 | s_idx = 1; | |
25239cee | 2282 | for (idx = 1; idx <= RTNL_FAMILY_MAX; idx++) { |
1da177e4 LT |
2283 | int type = cb->nlh->nlmsg_type-RTM_BASE; |
2284 | if (idx < s_idx || idx == PF_PACKET) | |
2285 | continue; | |
e2849863 TG |
2286 | if (rtnl_msg_handlers[idx] == NULL || |
2287 | rtnl_msg_handlers[idx][type].dumpit == NULL) | |
1da177e4 | 2288 | continue; |
0465277f | 2289 | if (idx > s_idx) { |
1da177e4 | 2290 | memset(&cb->args[0], 0, sizeof(cb->args)); |
0465277f ND |
2291 | cb->prev_seq = 0; |
2292 | cb->seq = 0; | |
2293 | } | |
e2849863 | 2294 | if (rtnl_msg_handlers[idx][type].dumpit(skb, cb)) |
1da177e4 LT |
2295 | break; |
2296 | } | |
2297 | cb->family = idx; | |
2298 | ||
2299 | return skb->len; | |
2300 | } | |
2301 | ||
395eea6c MB |
2302 | struct sk_buff *rtmsg_ifinfo_build_skb(int type, struct net_device *dev, |
2303 | unsigned int change, gfp_t flags) | |
1da177e4 | 2304 | { |
c346dca1 | 2305 | struct net *net = dev_net(dev); |
1da177e4 | 2306 | struct sk_buff *skb; |
0ec6d3f4 | 2307 | int err = -ENOBUFS; |
c7ac8679 | 2308 | size_t if_info_size; |
1da177e4 | 2309 | |
7f294054 | 2310 | skb = nlmsg_new((if_info_size = if_nlmsg_size(dev, 0)), flags); |
0ec6d3f4 TG |
2311 | if (skb == NULL) |
2312 | goto errout; | |
1da177e4 | 2313 | |
115c9b81 | 2314 | err = rtnl_fill_ifinfo(skb, dev, type, 0, 0, change, 0, 0); |
26932566 PM |
2315 | if (err < 0) { |
2316 | /* -EMSGSIZE implies BUG in if_nlmsg_size() */ | |
2317 | WARN_ON(err == -EMSGSIZE); | |
2318 | kfree_skb(skb); | |
2319 | goto errout; | |
2320 | } | |
395eea6c | 2321 | return skb; |
0ec6d3f4 TG |
2322 | errout: |
2323 | if (err < 0) | |
4b3da706 | 2324 | rtnl_set_sk_err(net, RTNLGRP_LINK, err); |
395eea6c MB |
2325 | return NULL; |
2326 | } | |
2327 | ||
2328 | void rtmsg_ifinfo_send(struct sk_buff *skb, struct net_device *dev, gfp_t flags) | |
2329 | { | |
2330 | struct net *net = dev_net(dev); | |
2331 | ||
2332 | rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, flags); | |
2333 | } | |
2334 | ||
2335 | void rtmsg_ifinfo(int type, struct net_device *dev, unsigned int change, | |
2336 | gfp_t flags) | |
2337 | { | |
2338 | struct sk_buff *skb; | |
2339 | ||
2340 | skb = rtmsg_ifinfo_build_skb(type, dev, change, flags); | |
2341 | if (skb) | |
2342 | rtmsg_ifinfo_send(skb, dev, flags); | |
1da177e4 | 2343 | } |
471cb5a3 | 2344 | EXPORT_SYMBOL(rtmsg_ifinfo); |
1da177e4 | 2345 | |
d83b0603 JF |
2346 | static int nlmsg_populate_fdb_fill(struct sk_buff *skb, |
2347 | struct net_device *dev, | |
2348 | u8 *addr, u32 pid, u32 seq, | |
1c104a6b ND |
2349 | int type, unsigned int flags, |
2350 | int nlflags) | |
d83b0603 JF |
2351 | { |
2352 | struct nlmsghdr *nlh; | |
2353 | struct ndmsg *ndm; | |
2354 | ||
1c104a6b | 2355 | nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ndm), nlflags); |
d83b0603 JF |
2356 | if (!nlh) |
2357 | return -EMSGSIZE; | |
2358 | ||
2359 | ndm = nlmsg_data(nlh); | |
2360 | ndm->ndm_family = AF_BRIDGE; | |
2361 | ndm->ndm_pad1 = 0; | |
2362 | ndm->ndm_pad2 = 0; | |
2363 | ndm->ndm_flags = flags; | |
2364 | ndm->ndm_type = 0; | |
2365 | ndm->ndm_ifindex = dev->ifindex; | |
2366 | ndm->ndm_state = NUD_PERMANENT; | |
2367 | ||
2368 | if (nla_put(skb, NDA_LLADDR, ETH_ALEN, addr)) | |
2369 | goto nla_put_failure; | |
2370 | ||
053c095a JB |
2371 | nlmsg_end(skb, nlh); |
2372 | return 0; | |
d83b0603 JF |
2373 | |
2374 | nla_put_failure: | |
2375 | nlmsg_cancel(skb, nlh); | |
2376 | return -EMSGSIZE; | |
2377 | } | |
2378 | ||
3ff661c3 JF |
2379 | static inline size_t rtnl_fdb_nlmsg_size(void) |
2380 | { | |
2381 | return NLMSG_ALIGN(sizeof(struct ndmsg)) + nla_total_size(ETH_ALEN); | |
2382 | } | |
2383 | ||
2384 | static void rtnl_fdb_notify(struct net_device *dev, u8 *addr, int type) | |
2385 | { | |
2386 | struct net *net = dev_net(dev); | |
2387 | struct sk_buff *skb; | |
2388 | int err = -ENOBUFS; | |
2389 | ||
2390 | skb = nlmsg_new(rtnl_fdb_nlmsg_size(), GFP_ATOMIC); | |
2391 | if (!skb) | |
2392 | goto errout; | |
2393 | ||
1c104a6b | 2394 | err = nlmsg_populate_fdb_fill(skb, dev, addr, 0, 0, type, NTF_SELF, 0); |
3ff661c3 JF |
2395 | if (err < 0) { |
2396 | kfree_skb(skb); | |
2397 | goto errout; | |
2398 | } | |
2399 | ||
2400 | rtnl_notify(skb, net, 0, RTNLGRP_NEIGH, NULL, GFP_ATOMIC); | |
2401 | return; | |
2402 | errout: | |
2403 | rtnl_set_sk_err(net, RTNLGRP_NEIGH, err); | |
2404 | } | |
2405 | ||
090096bf VY |
2406 | /** |
2407 | * ndo_dflt_fdb_add - default netdevice operation to add an FDB entry | |
2408 | */ | |
2409 | int ndo_dflt_fdb_add(struct ndmsg *ndm, | |
2410 | struct nlattr *tb[], | |
2411 | struct net_device *dev, | |
f6f6424b | 2412 | const unsigned char *addr, u16 vid, |
090096bf VY |
2413 | u16 flags) |
2414 | { | |
2415 | int err = -EINVAL; | |
2416 | ||
2417 | /* If aging addresses are supported device will need to | |
2418 | * implement its own handler for this. | |
2419 | */ | |
2420 | if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) { | |
2421 | pr_info("%s: FDB only supports static addresses\n", dev->name); | |
2422 | return err; | |
2423 | } | |
2424 | ||
65891fea OG |
2425 | if (vid) { |
2426 | pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name); | |
2427 | return err; | |
2428 | } | |
2429 | ||
090096bf VY |
2430 | if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr)) |
2431 | err = dev_uc_add_excl(dev, addr); | |
2432 | else if (is_multicast_ether_addr(addr)) | |
2433 | err = dev_mc_add_excl(dev, addr); | |
2434 | ||
2435 | /* Only return duplicate errors if NLM_F_EXCL is set */ | |
2436 | if (err == -EEXIST && !(flags & NLM_F_EXCL)) | |
2437 | err = 0; | |
2438 | ||
2439 | return err; | |
2440 | } | |
2441 | EXPORT_SYMBOL(ndo_dflt_fdb_add); | |
2442 | ||
f6f6424b JP |
2443 | static int fdb_vid_parse(struct nlattr *vlan_attr, u16 *p_vid) |
2444 | { | |
2445 | u16 vid = 0; | |
2446 | ||
2447 | if (vlan_attr) { | |
2448 | if (nla_len(vlan_attr) != sizeof(u16)) { | |
2449 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid vlan\n"); | |
2450 | return -EINVAL; | |
2451 | } | |
2452 | ||
2453 | vid = nla_get_u16(vlan_attr); | |
2454 | ||
2455 | if (!vid || vid >= VLAN_VID_MASK) { | |
2456 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid vlan id %d\n", | |
2457 | vid); | |
2458 | return -EINVAL; | |
2459 | } | |
2460 | } | |
2461 | *p_vid = vid; | |
2462 | return 0; | |
2463 | } | |
2464 | ||
661d2967 | 2465 | static int rtnl_fdb_add(struct sk_buff *skb, struct nlmsghdr *nlh) |
77162022 JF |
2466 | { |
2467 | struct net *net = sock_net(skb->sk); | |
77162022 JF |
2468 | struct ndmsg *ndm; |
2469 | struct nlattr *tb[NDA_MAX+1]; | |
2470 | struct net_device *dev; | |
2471 | u8 *addr; | |
f6f6424b | 2472 | u16 vid; |
77162022 JF |
2473 | int err; |
2474 | ||
2475 | err = nlmsg_parse(nlh, sizeof(*ndm), tb, NDA_MAX, NULL); | |
2476 | if (err < 0) | |
2477 | return err; | |
2478 | ||
2479 | ndm = nlmsg_data(nlh); | |
2480 | if (ndm->ndm_ifindex == 0) { | |
2481 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid ifindex\n"); | |
2482 | return -EINVAL; | |
2483 | } | |
2484 | ||
2485 | dev = __dev_get_by_index(net, ndm->ndm_ifindex); | |
2486 | if (dev == NULL) { | |
2487 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with unknown ifindex\n"); | |
2488 | return -ENODEV; | |
2489 | } | |
2490 | ||
2491 | if (!tb[NDA_LLADDR] || nla_len(tb[NDA_LLADDR]) != ETH_ALEN) { | |
2492 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid address\n"); | |
2493 | return -EINVAL; | |
2494 | } | |
2495 | ||
2496 | addr = nla_data(tb[NDA_LLADDR]); | |
77162022 | 2497 | |
f6f6424b JP |
2498 | err = fdb_vid_parse(tb[NDA_VLAN], &vid); |
2499 | if (err) | |
2500 | return err; | |
2501 | ||
77162022 JF |
2502 | err = -EOPNOTSUPP; |
2503 | ||
2504 | /* Support fdb on master device the net/bridge default case */ | |
2505 | if ((!ndm->ndm_flags || ndm->ndm_flags & NTF_MASTER) && | |
2506 | (dev->priv_flags & IFF_BRIDGE_PORT)) { | |
898e5061 JP |
2507 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
2508 | const struct net_device_ops *ops = br_dev->netdev_ops; | |
2509 | ||
f6f6424b JP |
2510 | err = ops->ndo_fdb_add(ndm, tb, dev, addr, vid, |
2511 | nlh->nlmsg_flags); | |
77162022 JF |
2512 | if (err) |
2513 | goto out; | |
2514 | else | |
2515 | ndm->ndm_flags &= ~NTF_MASTER; | |
2516 | } | |
2517 | ||
2518 | /* Embedded bridge, macvlan, and any other device support */ | |
090096bf VY |
2519 | if ((ndm->ndm_flags & NTF_SELF)) { |
2520 | if (dev->netdev_ops->ndo_fdb_add) | |
2521 | err = dev->netdev_ops->ndo_fdb_add(ndm, tb, dev, addr, | |
f6f6424b | 2522 | vid, |
090096bf VY |
2523 | nlh->nlmsg_flags); |
2524 | else | |
f6f6424b | 2525 | err = ndo_dflt_fdb_add(ndm, tb, dev, addr, vid, |
090096bf | 2526 | nlh->nlmsg_flags); |
77162022 | 2527 | |
3ff661c3 JF |
2528 | if (!err) { |
2529 | rtnl_fdb_notify(dev, addr, RTM_NEWNEIGH); | |
77162022 | 2530 | ndm->ndm_flags &= ~NTF_SELF; |
3ff661c3 | 2531 | } |
77162022 JF |
2532 | } |
2533 | out: | |
2534 | return err; | |
2535 | } | |
2536 | ||
090096bf VY |
2537 | /** |
2538 | * ndo_dflt_fdb_del - default netdevice operation to delete an FDB entry | |
2539 | */ | |
2540 | int ndo_dflt_fdb_del(struct ndmsg *ndm, | |
2541 | struct nlattr *tb[], | |
2542 | struct net_device *dev, | |
f6f6424b | 2543 | const unsigned char *addr, u16 vid) |
090096bf | 2544 | { |
c8a89c4a | 2545 | int err = -EINVAL; |
090096bf VY |
2546 | |
2547 | /* If aging addresses are supported device will need to | |
2548 | * implement its own handler for this. | |
2549 | */ | |
64535993 | 2550 | if (!(ndm->ndm_state & NUD_PERMANENT)) { |
090096bf | 2551 | pr_info("%s: FDB only supports static addresses\n", dev->name); |
c8a89c4a | 2552 | return err; |
090096bf VY |
2553 | } |
2554 | ||
2555 | if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr)) | |
2556 | err = dev_uc_del(dev, addr); | |
2557 | else if (is_multicast_ether_addr(addr)) | |
2558 | err = dev_mc_del(dev, addr); | |
090096bf VY |
2559 | |
2560 | return err; | |
2561 | } | |
2562 | EXPORT_SYMBOL(ndo_dflt_fdb_del); | |
2563 | ||
661d2967 | 2564 | static int rtnl_fdb_del(struct sk_buff *skb, struct nlmsghdr *nlh) |
77162022 JF |
2565 | { |
2566 | struct net *net = sock_net(skb->sk); | |
2567 | struct ndmsg *ndm; | |
1690be63 | 2568 | struct nlattr *tb[NDA_MAX+1]; |
77162022 JF |
2569 | struct net_device *dev; |
2570 | int err = -EINVAL; | |
2571 | __u8 *addr; | |
f6f6424b | 2572 | u16 vid; |
77162022 | 2573 | |
90f62cf3 | 2574 | if (!netlink_capable(skb, CAP_NET_ADMIN)) |
1690be63 VY |
2575 | return -EPERM; |
2576 | ||
2577 | err = nlmsg_parse(nlh, sizeof(*ndm), tb, NDA_MAX, NULL); | |
2578 | if (err < 0) | |
2579 | return err; | |
77162022 JF |
2580 | |
2581 | ndm = nlmsg_data(nlh); | |
2582 | if (ndm->ndm_ifindex == 0) { | |
2583 | pr_info("PF_BRIDGE: RTM_DELNEIGH with invalid ifindex\n"); | |
2584 | return -EINVAL; | |
2585 | } | |
2586 | ||
2587 | dev = __dev_get_by_index(net, ndm->ndm_ifindex); | |
2588 | if (dev == NULL) { | |
2589 | pr_info("PF_BRIDGE: RTM_DELNEIGH with unknown ifindex\n"); | |
2590 | return -ENODEV; | |
2591 | } | |
2592 | ||
1690be63 VY |
2593 | if (!tb[NDA_LLADDR] || nla_len(tb[NDA_LLADDR]) != ETH_ALEN) { |
2594 | pr_info("PF_BRIDGE: RTM_DELNEIGH with invalid address\n"); | |
2595 | return -EINVAL; | |
2596 | } | |
2597 | ||
2598 | addr = nla_data(tb[NDA_LLADDR]); | |
77162022 | 2599 | |
f6f6424b JP |
2600 | err = fdb_vid_parse(tb[NDA_VLAN], &vid); |
2601 | if (err) | |
2602 | return err; | |
2603 | ||
77162022 JF |
2604 | err = -EOPNOTSUPP; |
2605 | ||
2606 | /* Support fdb on master device the net/bridge default case */ | |
2607 | if ((!ndm->ndm_flags || ndm->ndm_flags & NTF_MASTER) && | |
2608 | (dev->priv_flags & IFF_BRIDGE_PORT)) { | |
898e5061 JP |
2609 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
2610 | const struct net_device_ops *ops = br_dev->netdev_ops; | |
77162022 | 2611 | |
898e5061 | 2612 | if (ops->ndo_fdb_del) |
f6f6424b | 2613 | err = ops->ndo_fdb_del(ndm, tb, dev, addr, vid); |
77162022 JF |
2614 | |
2615 | if (err) | |
2616 | goto out; | |
2617 | else | |
2618 | ndm->ndm_flags &= ~NTF_MASTER; | |
2619 | } | |
2620 | ||
2621 | /* Embedded bridge, macvlan, and any other device support */ | |
090096bf VY |
2622 | if (ndm->ndm_flags & NTF_SELF) { |
2623 | if (dev->netdev_ops->ndo_fdb_del) | |
f6f6424b JP |
2624 | err = dev->netdev_ops->ndo_fdb_del(ndm, tb, dev, addr, |
2625 | vid); | |
090096bf | 2626 | else |
f6f6424b | 2627 | err = ndo_dflt_fdb_del(ndm, tb, dev, addr, vid); |
77162022 | 2628 | |
3ff661c3 JF |
2629 | if (!err) { |
2630 | rtnl_fdb_notify(dev, addr, RTM_DELNEIGH); | |
77162022 | 2631 | ndm->ndm_flags &= ~NTF_SELF; |
3ff661c3 | 2632 | } |
77162022 JF |
2633 | } |
2634 | out: | |
2635 | return err; | |
2636 | } | |
2637 | ||
d83b0603 JF |
2638 | static int nlmsg_populate_fdb(struct sk_buff *skb, |
2639 | struct netlink_callback *cb, | |
2640 | struct net_device *dev, | |
2641 | int *idx, | |
2642 | struct netdev_hw_addr_list *list) | |
2643 | { | |
2644 | struct netdev_hw_addr *ha; | |
2645 | int err; | |
15e47304 | 2646 | u32 portid, seq; |
d83b0603 | 2647 | |
15e47304 | 2648 | portid = NETLINK_CB(cb->skb).portid; |
d83b0603 JF |
2649 | seq = cb->nlh->nlmsg_seq; |
2650 | ||
2651 | list_for_each_entry(ha, &list->list, list) { | |
2652 | if (*idx < cb->args[0]) | |
2653 | goto skip; | |
2654 | ||
2655 | err = nlmsg_populate_fdb_fill(skb, dev, ha->addr, | |
a7a558fe | 2656 | portid, seq, |
1c104a6b ND |
2657 | RTM_NEWNEIGH, NTF_SELF, |
2658 | NLM_F_MULTI); | |
d83b0603 JF |
2659 | if (err < 0) |
2660 | return err; | |
2661 | skip: | |
2662 | *idx += 1; | |
2663 | } | |
2664 | return 0; | |
2665 | } | |
2666 | ||
2667 | /** | |
2c53040f | 2668 | * ndo_dflt_fdb_dump - default netdevice operation to dump an FDB table. |
d83b0603 JF |
2669 | * @nlh: netlink message header |
2670 | * @dev: netdevice | |
2671 | * | |
2672 | * Default netdevice operation to dump the existing unicast address list. | |
91f3e7b1 | 2673 | * Returns number of addresses from list put in skb. |
d83b0603 JF |
2674 | */ |
2675 | int ndo_dflt_fdb_dump(struct sk_buff *skb, | |
2676 | struct netlink_callback *cb, | |
2677 | struct net_device *dev, | |
5d5eacb3 | 2678 | struct net_device *filter_dev, |
d83b0603 JF |
2679 | int idx) |
2680 | { | |
2681 | int err; | |
2682 | ||
2683 | netif_addr_lock_bh(dev); | |
2684 | err = nlmsg_populate_fdb(skb, cb, dev, &idx, &dev->uc); | |
2685 | if (err) | |
2686 | goto out; | |
2687 | nlmsg_populate_fdb(skb, cb, dev, &idx, &dev->mc); | |
2688 | out: | |
2689 | netif_addr_unlock_bh(dev); | |
2690 | return idx; | |
2691 | } | |
2692 | EXPORT_SYMBOL(ndo_dflt_fdb_dump); | |
2693 | ||
77162022 JF |
2694 | static int rtnl_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb) |
2695 | { | |
77162022 | 2696 | struct net_device *dev; |
5e6d2435 JHS |
2697 | struct nlattr *tb[IFLA_MAX+1]; |
2698 | struct net_device *bdev = NULL; | |
2699 | struct net_device *br_dev = NULL; | |
2700 | const struct net_device_ops *ops = NULL; | |
2701 | const struct net_device_ops *cops = NULL; | |
2702 | struct ifinfomsg *ifm = nlmsg_data(cb->nlh); | |
2703 | struct net *net = sock_net(skb->sk); | |
2704 | int brport_idx = 0; | |
2705 | int br_idx = 0; | |
2706 | int idx = 0; | |
2707 | ||
2708 | if (nlmsg_parse(cb->nlh, sizeof(struct ifinfomsg), tb, IFLA_MAX, | |
2709 | ifla_policy) == 0) { | |
2710 | if (tb[IFLA_MASTER]) | |
2711 | br_idx = nla_get_u32(tb[IFLA_MASTER]); | |
2712 | } | |
2713 | ||
2714 | brport_idx = ifm->ifi_index; | |
2715 | ||
2716 | if (br_idx) { | |
2717 | br_dev = __dev_get_by_index(net, br_idx); | |
2718 | if (!br_dev) | |
2719 | return -ENODEV; | |
2720 | ||
2721 | ops = br_dev->netdev_ops; | |
2722 | bdev = br_dev; | |
2723 | } | |
2724 | ||
2725 | for_each_netdev(net, dev) { | |
2726 | if (brport_idx && (dev->ifindex != brport_idx)) | |
2727 | continue; | |
2728 | ||
2729 | if (!br_idx) { /* user did not specify a specific bridge */ | |
2730 | if (dev->priv_flags & IFF_BRIDGE_PORT) { | |
2731 | br_dev = netdev_master_upper_dev_get(dev); | |
2732 | cops = br_dev->netdev_ops; | |
2733 | } | |
2734 | ||
2735 | bdev = dev; | |
2736 | } else { | |
2737 | if (dev != br_dev && | |
2738 | !(dev->priv_flags & IFF_BRIDGE_PORT)) | |
2739 | continue; | |
2740 | ||
2741 | if (br_dev != netdev_master_upper_dev_get(dev) && | |
2742 | !(dev->priv_flags & IFF_EBRIDGE)) | |
2743 | continue; | |
2744 | ||
2745 | bdev = br_dev; | |
2746 | cops = ops; | |
2747 | } | |
77162022 | 2748 | |
77162022 | 2749 | if (dev->priv_flags & IFF_BRIDGE_PORT) { |
5e6d2435 JHS |
2750 | if (cops && cops->ndo_fdb_dump) |
2751 | idx = cops->ndo_fdb_dump(skb, cb, br_dev, dev, | |
2752 | idx); | |
77162022 JF |
2753 | } |
2754 | ||
2755 | if (dev->netdev_ops->ndo_fdb_dump) | |
6cb69742 | 2756 | idx = dev->netdev_ops->ndo_fdb_dump(skb, cb, dev, NULL, |
5d5eacb3 | 2757 | idx); |
6cb69742 HS |
2758 | else |
2759 | idx = ndo_dflt_fdb_dump(skb, cb, dev, NULL, idx); | |
5e6d2435 JHS |
2760 | |
2761 | cops = NULL; | |
77162022 | 2762 | } |
77162022 JF |
2763 | |
2764 | cb->args[0] = idx; | |
2765 | return skb->len; | |
2766 | } | |
2767 | ||
2c3c031c SF |
2768 | static int brport_nla_put_flag(struct sk_buff *skb, u32 flags, u32 mask, |
2769 | unsigned int attrnum, unsigned int flag) | |
2770 | { | |
2771 | if (mask & flag) | |
2772 | return nla_put_u8(skb, attrnum, !!(flags & flag)); | |
2773 | return 0; | |
2774 | } | |
2775 | ||
815cccbf | 2776 | int ndo_dflt_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq, |
2c3c031c SF |
2777 | struct net_device *dev, u16 mode, |
2778 | u32 flags, u32 mask) | |
815cccbf JF |
2779 | { |
2780 | struct nlmsghdr *nlh; | |
2781 | struct ifinfomsg *ifm; | |
2782 | struct nlattr *br_afspec; | |
2c3c031c | 2783 | struct nlattr *protinfo; |
815cccbf | 2784 | u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN; |
898e5061 | 2785 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
815cccbf JF |
2786 | |
2787 | nlh = nlmsg_put(skb, pid, seq, RTM_NEWLINK, sizeof(*ifm), NLM_F_MULTI); | |
2788 | if (nlh == NULL) | |
2789 | return -EMSGSIZE; | |
2790 | ||
2791 | ifm = nlmsg_data(nlh); | |
2792 | ifm->ifi_family = AF_BRIDGE; | |
2793 | ifm->__ifi_pad = 0; | |
2794 | ifm->ifi_type = dev->type; | |
2795 | ifm->ifi_index = dev->ifindex; | |
2796 | ifm->ifi_flags = dev_get_flags(dev); | |
2797 | ifm->ifi_change = 0; | |
2798 | ||
2799 | ||
2800 | if (nla_put_string(skb, IFLA_IFNAME, dev->name) || | |
2801 | nla_put_u32(skb, IFLA_MTU, dev->mtu) || | |
2802 | nla_put_u8(skb, IFLA_OPERSTATE, operstate) || | |
898e5061 JP |
2803 | (br_dev && |
2804 | nla_put_u32(skb, IFLA_MASTER, br_dev->ifindex)) || | |
815cccbf JF |
2805 | (dev->addr_len && |
2806 | nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) || | |
2807 | (dev->ifindex != dev->iflink && | |
2808 | nla_put_u32(skb, IFLA_LINK, dev->iflink))) | |
2809 | goto nla_put_failure; | |
2810 | ||
2811 | br_afspec = nla_nest_start(skb, IFLA_AF_SPEC); | |
2812 | if (!br_afspec) | |
2813 | goto nla_put_failure; | |
2814 | ||
1d460b98 | 2815 | if (nla_put_u16(skb, IFLA_BRIDGE_FLAGS, BRIDGE_FLAGS_SELF)) { |
815cccbf JF |
2816 | nla_nest_cancel(skb, br_afspec); |
2817 | goto nla_put_failure; | |
2818 | } | |
1d460b98 RP |
2819 | |
2820 | if (mode != BRIDGE_MODE_UNDEF) { | |
2821 | if (nla_put_u16(skb, IFLA_BRIDGE_MODE, mode)) { | |
2822 | nla_nest_cancel(skb, br_afspec); | |
2823 | goto nla_put_failure; | |
2824 | } | |
2825 | } | |
815cccbf JF |
2826 | nla_nest_end(skb, br_afspec); |
2827 | ||
2c3c031c SF |
2828 | protinfo = nla_nest_start(skb, IFLA_PROTINFO | NLA_F_NESTED); |
2829 | if (!protinfo) | |
2830 | goto nla_put_failure; | |
2831 | ||
2832 | if (brport_nla_put_flag(skb, flags, mask, | |
2833 | IFLA_BRPORT_MODE, BR_HAIRPIN_MODE) || | |
2834 | brport_nla_put_flag(skb, flags, mask, | |
2835 | IFLA_BRPORT_GUARD, BR_BPDU_GUARD) || | |
2836 | brport_nla_put_flag(skb, flags, mask, | |
2837 | IFLA_BRPORT_FAST_LEAVE, | |
2838 | BR_MULTICAST_FAST_LEAVE) || | |
2839 | brport_nla_put_flag(skb, flags, mask, | |
2840 | IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK) || | |
2841 | brport_nla_put_flag(skb, flags, mask, | |
2842 | IFLA_BRPORT_LEARNING, BR_LEARNING) || | |
2843 | brport_nla_put_flag(skb, flags, mask, | |
2844 | IFLA_BRPORT_LEARNING_SYNC, BR_LEARNING_SYNC) || | |
2845 | brport_nla_put_flag(skb, flags, mask, | |
2846 | IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD) || | |
2847 | brport_nla_put_flag(skb, flags, mask, | |
2848 | IFLA_BRPORT_PROXYARP, BR_PROXYARP)) { | |
2849 | nla_nest_cancel(skb, protinfo); | |
2850 | goto nla_put_failure; | |
2851 | } | |
2852 | ||
2853 | nla_nest_end(skb, protinfo); | |
2854 | ||
053c095a JB |
2855 | nlmsg_end(skb, nlh); |
2856 | return 0; | |
815cccbf JF |
2857 | nla_put_failure: |
2858 | nlmsg_cancel(skb, nlh); | |
2859 | return -EMSGSIZE; | |
2860 | } | |
2861 | EXPORT_SYMBOL(ndo_dflt_bridge_getlink); | |
2862 | ||
e5a55a89 JF |
2863 | static int rtnl_bridge_getlink(struct sk_buff *skb, struct netlink_callback *cb) |
2864 | { | |
2865 | struct net *net = sock_net(skb->sk); | |
2866 | struct net_device *dev; | |
2867 | int idx = 0; | |
2868 | u32 portid = NETLINK_CB(cb->skb).portid; | |
2869 | u32 seq = cb->nlh->nlmsg_seq; | |
6cbdceeb VY |
2870 | u32 filter_mask = 0; |
2871 | ||
aa68c20f TG |
2872 | if (nlmsg_len(cb->nlh) > sizeof(struct ifinfomsg)) { |
2873 | struct nlattr *extfilt; | |
2874 | ||
2875 | extfilt = nlmsg_find_attr(cb->nlh, sizeof(struct ifinfomsg), | |
2876 | IFLA_EXT_MASK); | |
2877 | if (extfilt) { | |
2878 | if (nla_len(extfilt) < sizeof(filter_mask)) | |
2879 | return -EINVAL; | |
2880 | ||
2881 | filter_mask = nla_get_u32(extfilt); | |
2882 | } | |
2883 | } | |
e5a55a89 JF |
2884 | |
2885 | rcu_read_lock(); | |
2886 | for_each_netdev_rcu(net, dev) { | |
2887 | const struct net_device_ops *ops = dev->netdev_ops; | |
898e5061 | 2888 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
e5a55a89 | 2889 | |
898e5061 | 2890 | if (br_dev && br_dev->netdev_ops->ndo_bridge_getlink) { |
25b1e679 | 2891 | if (idx >= cb->args[0] && |
898e5061 | 2892 | br_dev->netdev_ops->ndo_bridge_getlink( |
6cbdceeb | 2893 | skb, portid, seq, dev, filter_mask) < 0) |
e5a55a89 | 2894 | break; |
25b1e679 | 2895 | idx++; |
e5a55a89 JF |
2896 | } |
2897 | ||
2898 | if (ops->ndo_bridge_getlink) { | |
25b1e679 | 2899 | if (idx >= cb->args[0] && |
6cbdceeb VY |
2900 | ops->ndo_bridge_getlink(skb, portid, seq, dev, |
2901 | filter_mask) < 0) | |
e5a55a89 | 2902 | break; |
25b1e679 | 2903 | idx++; |
e5a55a89 JF |
2904 | } |
2905 | } | |
2906 | rcu_read_unlock(); | |
2907 | cb->args[0] = idx; | |
2908 | ||
2909 | return skb->len; | |
2910 | } | |
2911 | ||
2469ffd7 JF |
2912 | static inline size_t bridge_nlmsg_size(void) |
2913 | { | |
2914 | return NLMSG_ALIGN(sizeof(struct ifinfomsg)) | |
2915 | + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */ | |
2916 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */ | |
2917 | + nla_total_size(sizeof(u32)) /* IFLA_MASTER */ | |
2918 | + nla_total_size(sizeof(u32)) /* IFLA_MTU */ | |
2919 | + nla_total_size(sizeof(u32)) /* IFLA_LINK */ | |
2920 | + nla_total_size(sizeof(u32)) /* IFLA_OPERSTATE */ | |
2921 | + nla_total_size(sizeof(u8)) /* IFLA_PROTINFO */ | |
2922 | + nla_total_size(sizeof(struct nlattr)) /* IFLA_AF_SPEC */ | |
2923 | + nla_total_size(sizeof(u16)) /* IFLA_BRIDGE_FLAGS */ | |
2924 | + nla_total_size(sizeof(u16)); /* IFLA_BRIDGE_MODE */ | |
2925 | } | |
2926 | ||
02dba438 | 2927 | static int rtnl_bridge_notify(struct net_device *dev) |
2469ffd7 JF |
2928 | { |
2929 | struct net *net = dev_net(dev); | |
2469ffd7 JF |
2930 | struct sk_buff *skb; |
2931 | int err = -EOPNOTSUPP; | |
2932 | ||
02dba438 RP |
2933 | if (!dev->netdev_ops->ndo_bridge_getlink) |
2934 | return 0; | |
2935 | ||
2469ffd7 JF |
2936 | skb = nlmsg_new(bridge_nlmsg_size(), GFP_ATOMIC); |
2937 | if (!skb) { | |
2938 | err = -ENOMEM; | |
2939 | goto errout; | |
2940 | } | |
2941 | ||
02dba438 RP |
2942 | err = dev->netdev_ops->ndo_bridge_getlink(skb, 0, 0, dev, 0); |
2943 | if (err < 0) | |
2944 | goto errout; | |
2469ffd7 | 2945 | |
59ccaaaa RP |
2946 | if (!skb->len) |
2947 | goto errout; | |
2948 | ||
2469ffd7 JF |
2949 | rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC); |
2950 | return 0; | |
2951 | errout: | |
2952 | WARN_ON(err == -EMSGSIZE); | |
2953 | kfree_skb(skb); | |
59ccaaaa RP |
2954 | if (err) |
2955 | rtnl_set_sk_err(net, RTNLGRP_LINK, err); | |
2469ffd7 JF |
2956 | return err; |
2957 | } | |
2958 | ||
661d2967 | 2959 | static int rtnl_bridge_setlink(struct sk_buff *skb, struct nlmsghdr *nlh) |
e5a55a89 JF |
2960 | { |
2961 | struct net *net = sock_net(skb->sk); | |
2962 | struct ifinfomsg *ifm; | |
2963 | struct net_device *dev; | |
2469ffd7 JF |
2964 | struct nlattr *br_spec, *attr = NULL; |
2965 | int rem, err = -EOPNOTSUPP; | |
4de8b413 | 2966 | u16 flags = 0; |
c38e01b8 | 2967 | bool have_flags = false; |
e5a55a89 JF |
2968 | |
2969 | if (nlmsg_len(nlh) < sizeof(*ifm)) | |
2970 | return -EINVAL; | |
2971 | ||
2972 | ifm = nlmsg_data(nlh); | |
2973 | if (ifm->ifi_family != AF_BRIDGE) | |
2974 | return -EPFNOSUPPORT; | |
2975 | ||
2976 | dev = __dev_get_by_index(net, ifm->ifi_index); | |
2977 | if (!dev) { | |
2978 | pr_info("PF_BRIDGE: RTM_SETLINK with unknown ifindex\n"); | |
2979 | return -ENODEV; | |
2980 | } | |
2981 | ||
2469ffd7 JF |
2982 | br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); |
2983 | if (br_spec) { | |
2984 | nla_for_each_nested(attr, br_spec, rem) { | |
2985 | if (nla_type(attr) == IFLA_BRIDGE_FLAGS) { | |
6e8d1c55 TG |
2986 | if (nla_len(attr) < sizeof(flags)) |
2987 | return -EINVAL; | |
2988 | ||
c38e01b8 | 2989 | have_flags = true; |
2469ffd7 JF |
2990 | flags = nla_get_u16(attr); |
2991 | break; | |
2992 | } | |
2993 | } | |
2994 | } | |
2995 | ||
2996 | if (!flags || (flags & BRIDGE_FLAGS_MASTER)) { | |
898e5061 JP |
2997 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
2998 | ||
2999 | if (!br_dev || !br_dev->netdev_ops->ndo_bridge_setlink) { | |
2469ffd7 JF |
3000 | err = -EOPNOTSUPP; |
3001 | goto out; | |
3002 | } | |
3003 | ||
add511b3 | 3004 | err = br_dev->netdev_ops->ndo_bridge_setlink(dev, nlh, flags); |
e5a55a89 JF |
3005 | if (err) |
3006 | goto out; | |
2469ffd7 JF |
3007 | |
3008 | flags &= ~BRIDGE_FLAGS_MASTER; | |
e5a55a89 JF |
3009 | } |
3010 | ||
2469ffd7 JF |
3011 | if ((flags & BRIDGE_FLAGS_SELF)) { |
3012 | if (!dev->netdev_ops->ndo_bridge_setlink) | |
3013 | err = -EOPNOTSUPP; | |
3014 | else | |
add511b3 RP |
3015 | err = dev->netdev_ops->ndo_bridge_setlink(dev, nlh, |
3016 | flags); | |
02dba438 | 3017 | if (!err) { |
2469ffd7 | 3018 | flags &= ~BRIDGE_FLAGS_SELF; |
02dba438 RP |
3019 | |
3020 | /* Generate event to notify upper layer of bridge | |
3021 | * change | |
3022 | */ | |
3023 | err = rtnl_bridge_notify(dev); | |
3024 | } | |
2469ffd7 | 3025 | } |
e5a55a89 | 3026 | |
c38e01b8 | 3027 | if (have_flags) |
2469ffd7 | 3028 | memcpy(nla_data(attr), &flags, sizeof(flags)); |
e5a55a89 JF |
3029 | out: |
3030 | return err; | |
3031 | } | |
3032 | ||
661d2967 | 3033 | static int rtnl_bridge_dellink(struct sk_buff *skb, struct nlmsghdr *nlh) |
407af329 VY |
3034 | { |
3035 | struct net *net = sock_net(skb->sk); | |
3036 | struct ifinfomsg *ifm; | |
3037 | struct net_device *dev; | |
3038 | struct nlattr *br_spec, *attr = NULL; | |
3039 | int rem, err = -EOPNOTSUPP; | |
4de8b413 | 3040 | u16 flags = 0; |
407af329 VY |
3041 | bool have_flags = false; |
3042 | ||
3043 | if (nlmsg_len(nlh) < sizeof(*ifm)) | |
3044 | return -EINVAL; | |
3045 | ||
3046 | ifm = nlmsg_data(nlh); | |
3047 | if (ifm->ifi_family != AF_BRIDGE) | |
3048 | return -EPFNOSUPPORT; | |
3049 | ||
3050 | dev = __dev_get_by_index(net, ifm->ifi_index); | |
3051 | if (!dev) { | |
3052 | pr_info("PF_BRIDGE: RTM_SETLINK with unknown ifindex\n"); | |
3053 | return -ENODEV; | |
3054 | } | |
3055 | ||
3056 | br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); | |
3057 | if (br_spec) { | |
3058 | nla_for_each_nested(attr, br_spec, rem) { | |
3059 | if (nla_type(attr) == IFLA_BRIDGE_FLAGS) { | |
6e8d1c55 TG |
3060 | if (nla_len(attr) < sizeof(flags)) |
3061 | return -EINVAL; | |
3062 | ||
407af329 VY |
3063 | have_flags = true; |
3064 | flags = nla_get_u16(attr); | |
3065 | break; | |
3066 | } | |
3067 | } | |
3068 | } | |
3069 | ||
407af329 VY |
3070 | if (!flags || (flags & BRIDGE_FLAGS_MASTER)) { |
3071 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); | |
3072 | ||
3073 | if (!br_dev || !br_dev->netdev_ops->ndo_bridge_dellink) { | |
3074 | err = -EOPNOTSUPP; | |
3075 | goto out; | |
3076 | } | |
3077 | ||
add511b3 | 3078 | err = br_dev->netdev_ops->ndo_bridge_dellink(dev, nlh, flags); |
407af329 VY |
3079 | if (err) |
3080 | goto out; | |
3081 | ||
3082 | flags &= ~BRIDGE_FLAGS_MASTER; | |
3083 | } | |
3084 | ||
3085 | if ((flags & BRIDGE_FLAGS_SELF)) { | |
3086 | if (!dev->netdev_ops->ndo_bridge_dellink) | |
3087 | err = -EOPNOTSUPP; | |
3088 | else | |
add511b3 RP |
3089 | err = dev->netdev_ops->ndo_bridge_dellink(dev, nlh, |
3090 | flags); | |
407af329 | 3091 | |
02dba438 | 3092 | if (!err) { |
407af329 | 3093 | flags &= ~BRIDGE_FLAGS_SELF; |
02dba438 RP |
3094 | |
3095 | /* Generate event to notify upper layer of bridge | |
3096 | * change | |
3097 | */ | |
3098 | err = rtnl_bridge_notify(dev); | |
3099 | } | |
407af329 VY |
3100 | } |
3101 | ||
3102 | if (have_flags) | |
3103 | memcpy(nla_data(attr), &flags, sizeof(flags)); | |
407af329 VY |
3104 | out: |
3105 | return err; | |
3106 | } | |
3107 | ||
1da177e4 LT |
3108 | /* Process one rtnetlink message. */ |
3109 | ||
1d00a4eb | 3110 | static int rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh) |
1da177e4 | 3111 | { |
3b1e0a65 | 3112 | struct net *net = sock_net(skb->sk); |
e2849863 | 3113 | rtnl_doit_func doit; |
1da177e4 | 3114 | int sz_idx, kind; |
1da177e4 LT |
3115 | int family; |
3116 | int type; | |
2907c35f | 3117 | int err; |
1da177e4 | 3118 | |
1da177e4 | 3119 | type = nlh->nlmsg_type; |
1da177e4 | 3120 | if (type > RTM_MAX) |
038890fe | 3121 | return -EOPNOTSUPP; |
1da177e4 LT |
3122 | |
3123 | type -= RTM_BASE; | |
3124 | ||
3125 | /* All the messages must have at least 1 byte length */ | |
573ce260 | 3126 | if (nlmsg_len(nlh) < sizeof(struct rtgenmsg)) |
1da177e4 LT |
3127 | return 0; |
3128 | ||
573ce260 | 3129 | family = ((struct rtgenmsg *)nlmsg_data(nlh))->rtgen_family; |
1da177e4 LT |
3130 | sz_idx = type>>2; |
3131 | kind = type&3; | |
3132 | ||
90f62cf3 | 3133 | if (kind != 2 && !netlink_net_capable(skb, CAP_NET_ADMIN)) |
1d00a4eb | 3134 | return -EPERM; |
1da177e4 | 3135 | |
b8f3ab42 | 3136 | if (kind == 2 && nlh->nlmsg_flags&NLM_F_DUMP) { |
97c53cac | 3137 | struct sock *rtnl; |
e2849863 | 3138 | rtnl_dumpit_func dumpit; |
c7ac8679 GR |
3139 | rtnl_calcit_func calcit; |
3140 | u16 min_dump_alloc = 0; | |
1da177e4 | 3141 | |
e2849863 TG |
3142 | dumpit = rtnl_get_dumpit(family, type); |
3143 | if (dumpit == NULL) | |
038890fe | 3144 | return -EOPNOTSUPP; |
c7ac8679 GR |
3145 | calcit = rtnl_get_calcit(family, type); |
3146 | if (calcit) | |
115c9b81 | 3147 | min_dump_alloc = calcit(skb, nlh); |
9ac4a169 | 3148 | |
2907c35f | 3149 | __rtnl_unlock(); |
97c53cac | 3150 | rtnl = net->rtnl; |
80d326fa PNA |
3151 | { |
3152 | struct netlink_dump_control c = { | |
3153 | .dump = dumpit, | |
3154 | .min_dump_alloc = min_dump_alloc, | |
3155 | }; | |
3156 | err = netlink_dump_start(rtnl, skb, nlh, &c); | |
3157 | } | |
2907c35f ED |
3158 | rtnl_lock(); |
3159 | return err; | |
1da177e4 LT |
3160 | } |
3161 | ||
e2849863 TG |
3162 | doit = rtnl_get_doit(family, type); |
3163 | if (doit == NULL) | |
038890fe | 3164 | return -EOPNOTSUPP; |
1da177e4 | 3165 | |
661d2967 | 3166 | return doit(skb, nlh); |
1da177e4 LT |
3167 | } |
3168 | ||
cd40b7d3 | 3169 | static void rtnetlink_rcv(struct sk_buff *skb) |
1da177e4 | 3170 | { |
cd40b7d3 DL |
3171 | rtnl_lock(); |
3172 | netlink_rcv_skb(skb, &rtnetlink_rcv_msg); | |
3173 | rtnl_unlock(); | |
1da177e4 LT |
3174 | } |
3175 | ||
1da177e4 LT |
3176 | static int rtnetlink_event(struct notifier_block *this, unsigned long event, void *ptr) |
3177 | { | |
351638e7 | 3178 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
e9dc8653 | 3179 | |
1da177e4 | 3180 | switch (event) { |
1da177e4 LT |
3181 | case NETDEV_UP: |
3182 | case NETDEV_DOWN: | |
10de05af | 3183 | case NETDEV_PRE_UP: |
d90a909e EB |
3184 | case NETDEV_POST_INIT: |
3185 | case NETDEV_REGISTER: | |
1da177e4 | 3186 | case NETDEV_CHANGE: |
755d0e77 | 3187 | case NETDEV_PRE_TYPE_CHANGE: |
1da177e4 | 3188 | case NETDEV_GOING_DOWN: |
a2835763 | 3189 | case NETDEV_UNREGISTER: |
0115e8e3 | 3190 | case NETDEV_UNREGISTER_FINAL: |
ac3d3f81 AW |
3191 | case NETDEV_RELEASE: |
3192 | case NETDEV_JOIN: | |
61bd3857 | 3193 | case NETDEV_BONDING_INFO: |
1da177e4 LT |
3194 | break; |
3195 | default: | |
7f294054 | 3196 | rtmsg_ifinfo(RTM_NEWLINK, dev, 0, GFP_KERNEL); |
1da177e4 LT |
3197 | break; |
3198 | } | |
3199 | return NOTIFY_DONE; | |
3200 | } | |
3201 | ||
3202 | static struct notifier_block rtnetlink_dev_notifier = { | |
3203 | .notifier_call = rtnetlink_event, | |
3204 | }; | |
3205 | ||
97c53cac | 3206 | |
2c8c1e72 | 3207 | static int __net_init rtnetlink_net_init(struct net *net) |
97c53cac DL |
3208 | { |
3209 | struct sock *sk; | |
a31f2d17 PNA |
3210 | struct netlink_kernel_cfg cfg = { |
3211 | .groups = RTNLGRP_MAX, | |
3212 | .input = rtnetlink_rcv, | |
3213 | .cb_mutex = &rtnl_mutex, | |
9785e10a | 3214 | .flags = NL_CFG_F_NONROOT_RECV, |
a31f2d17 PNA |
3215 | }; |
3216 | ||
9f00d977 | 3217 | sk = netlink_kernel_create(net, NETLINK_ROUTE, &cfg); |
97c53cac DL |
3218 | if (!sk) |
3219 | return -ENOMEM; | |
97c53cac DL |
3220 | net->rtnl = sk; |
3221 | return 0; | |
3222 | } | |
3223 | ||
2c8c1e72 | 3224 | static void __net_exit rtnetlink_net_exit(struct net *net) |
97c53cac | 3225 | { |
775516bf DL |
3226 | netlink_kernel_release(net->rtnl); |
3227 | net->rtnl = NULL; | |
97c53cac DL |
3228 | } |
3229 | ||
3230 | static struct pernet_operations rtnetlink_net_ops = { | |
3231 | .init = rtnetlink_net_init, | |
3232 | .exit = rtnetlink_net_exit, | |
3233 | }; | |
3234 | ||
1da177e4 LT |
3235 | void __init rtnetlink_init(void) |
3236 | { | |
97c53cac | 3237 | if (register_pernet_subsys(&rtnetlink_net_ops)) |
1da177e4 | 3238 | panic("rtnetlink_init: cannot initialize rtnetlink\n"); |
97c53cac | 3239 | |
1da177e4 | 3240 | register_netdevice_notifier(&rtnetlink_dev_notifier); |
340d17fc | 3241 | |
c7ac8679 GR |
3242 | rtnl_register(PF_UNSPEC, RTM_GETLINK, rtnl_getlink, |
3243 | rtnl_dump_ifinfo, rtnl_calcit); | |
3244 | rtnl_register(PF_UNSPEC, RTM_SETLINK, rtnl_setlink, NULL, NULL); | |
3245 | rtnl_register(PF_UNSPEC, RTM_NEWLINK, rtnl_newlink, NULL, NULL); | |
3246 | rtnl_register(PF_UNSPEC, RTM_DELLINK, rtnl_dellink, NULL, NULL); | |
687ad8cc | 3247 | |
c7ac8679 GR |
3248 | rtnl_register(PF_UNSPEC, RTM_GETADDR, NULL, rtnl_dump_all, NULL); |
3249 | rtnl_register(PF_UNSPEC, RTM_GETROUTE, NULL, rtnl_dump_all, NULL); | |
77162022 JF |
3250 | |
3251 | rtnl_register(PF_BRIDGE, RTM_NEWNEIGH, rtnl_fdb_add, NULL, NULL); | |
3252 | rtnl_register(PF_BRIDGE, RTM_DELNEIGH, rtnl_fdb_del, NULL, NULL); | |
3253 | rtnl_register(PF_BRIDGE, RTM_GETNEIGH, NULL, rtnl_fdb_dump, NULL); | |
e5a55a89 JF |
3254 | |
3255 | rtnl_register(PF_BRIDGE, RTM_GETLINK, NULL, rtnl_bridge_getlink, NULL); | |
407af329 | 3256 | rtnl_register(PF_BRIDGE, RTM_DELLINK, rtnl_bridge_dellink, NULL, NULL); |
e5a55a89 | 3257 | rtnl_register(PF_BRIDGE, RTM_SETLINK, rtnl_bridge_setlink, NULL, NULL); |
1da177e4 LT |
3258 | } |
3259 |