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