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1da177e4 LT |
1 | /* |
2 | * INET An implementation of the TCP/IP protocol suite for the LINUX | |
3 | * operating system. INET is implemented using the BSD Socket | |
4 | * interface as the means of communication with the user level. | |
5 | * | |
6 | * Routing netlink socket interface: protocol independent part. | |
7 | * | |
8 | * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or | |
11 | * modify it under the terms of the GNU General Public License | |
12 | * as published by the Free Software Foundation; either version | |
13 | * 2 of the License, or (at your option) any later version. | |
14 | * | |
15 | * Fixes: | |
16 | * Vitaly E. Lavrov RTA_OK arithmetics was wrong. | |
17 | */ | |
18 | ||
1da177e4 LT |
19 | #include <linux/errno.h> |
20 | #include <linux/module.h> | |
21 | #include <linux/types.h> | |
22 | #include <linux/socket.h> | |
23 | #include <linux/kernel.h> | |
1da177e4 LT |
24 | #include <linux/timer.h> |
25 | #include <linux/string.h> | |
26 | #include <linux/sockios.h> | |
27 | #include <linux/net.h> | |
28 | #include <linux/fcntl.h> | |
29 | #include <linux/mm.h> | |
30 | #include <linux/slab.h> | |
31 | #include <linux/interrupt.h> | |
32 | #include <linux/capability.h> | |
33 | #include <linux/skbuff.h> | |
34 | #include <linux/init.h> | |
35 | #include <linux/security.h> | |
6756ae4b | 36 | #include <linux/mutex.h> |
1823730f | 37 | #include <linux/if_addr.h> |
77162022 | 38 | #include <linux/if_bridge.h> |
f6f6424b | 39 | #include <linux/if_vlan.h> |
ebc08a6f | 40 | #include <linux/pci.h> |
77162022 | 41 | #include <linux/etherdevice.h> |
1da177e4 LT |
42 | |
43 | #include <asm/uaccess.h> | |
1da177e4 LT |
44 | |
45 | #include <linux/inet.h> | |
46 | #include <linux/netdevice.h> | |
82f28412 | 47 | #include <net/switchdev.h> |
1da177e4 LT |
48 | #include <net/ip.h> |
49 | #include <net/protocol.h> | |
50 | #include <net/arp.h> | |
51 | #include <net/route.h> | |
52 | #include <net/udp.h> | |
ea697639 | 53 | #include <net/tcp.h> |
1da177e4 LT |
54 | #include <net/sock.h> |
55 | #include <net/pkt_sched.h> | |
14c0b97d | 56 | #include <net/fib_rules.h> |
e2849863 | 57 | #include <net/rtnetlink.h> |
30ffee84 | 58 | #include <net/net_namespace.h> |
1da177e4 | 59 | |
e0d087af | 60 | struct rtnl_link { |
e2849863 TG |
61 | rtnl_doit_func doit; |
62 | rtnl_dumpit_func dumpit; | |
c7ac8679 | 63 | rtnl_calcit_func calcit; |
e2849863 TG |
64 | }; |
65 | ||
6756ae4b | 66 | static DEFINE_MUTEX(rtnl_mutex); |
1da177e4 LT |
67 | |
68 | void rtnl_lock(void) | |
69 | { | |
6756ae4b | 70 | mutex_lock(&rtnl_mutex); |
1da177e4 | 71 | } |
e0d087af | 72 | EXPORT_SYMBOL(rtnl_lock); |
1da177e4 | 73 | |
6756ae4b | 74 | void __rtnl_unlock(void) |
1da177e4 | 75 | { |
6756ae4b | 76 | mutex_unlock(&rtnl_mutex); |
1da177e4 | 77 | } |
6756ae4b | 78 | |
1da177e4 LT |
79 | void rtnl_unlock(void) |
80 | { | |
58ec3b4d | 81 | /* This fellow will unlock it for us. */ |
1da177e4 LT |
82 | netdev_run_todo(); |
83 | } | |
e0d087af | 84 | EXPORT_SYMBOL(rtnl_unlock); |
1da177e4 | 85 | |
6756ae4b SH |
86 | int rtnl_trylock(void) |
87 | { | |
88 | return mutex_trylock(&rtnl_mutex); | |
89 | } | |
e0d087af | 90 | EXPORT_SYMBOL(rtnl_trylock); |
6756ae4b | 91 | |
c9c1014b PM |
92 | int rtnl_is_locked(void) |
93 | { | |
94 | return mutex_is_locked(&rtnl_mutex); | |
95 | } | |
e0d087af | 96 | EXPORT_SYMBOL(rtnl_is_locked); |
c9c1014b | 97 | |
a898def2 | 98 | #ifdef CONFIG_PROVE_LOCKING |
0cbf3343 | 99 | bool lockdep_rtnl_is_held(void) |
a898def2 PM |
100 | { |
101 | return lockdep_is_held(&rtnl_mutex); | |
102 | } | |
103 | EXPORT_SYMBOL(lockdep_rtnl_is_held); | |
104 | #endif /* #ifdef CONFIG_PROVE_LOCKING */ | |
105 | ||
25239cee | 106 | static struct rtnl_link *rtnl_msg_handlers[RTNL_FAMILY_MAX + 1]; |
e2849863 TG |
107 | |
108 | static inline int rtm_msgindex(int msgtype) | |
109 | { | |
110 | int msgindex = msgtype - RTM_BASE; | |
111 | ||
112 | /* | |
113 | * msgindex < 0 implies someone tried to register a netlink | |
114 | * control code. msgindex >= RTM_NR_MSGTYPES may indicate that | |
115 | * the message type has not been added to linux/rtnetlink.h | |
116 | */ | |
117 | BUG_ON(msgindex < 0 || msgindex >= RTM_NR_MSGTYPES); | |
118 | ||
119 | return msgindex; | |
120 | } | |
121 | ||
122 | static rtnl_doit_func rtnl_get_doit(int protocol, int msgindex) | |
123 | { | |
124 | struct rtnl_link *tab; | |
125 | ||
25239cee | 126 | if (protocol <= RTNL_FAMILY_MAX) |
0f87b1dd PM |
127 | tab = rtnl_msg_handlers[protocol]; |
128 | else | |
129 | tab = NULL; | |
130 | ||
51057f2f | 131 | if (tab == NULL || tab[msgindex].doit == NULL) |
e2849863 TG |
132 | tab = rtnl_msg_handlers[PF_UNSPEC]; |
133 | ||
c80bbeae | 134 | return tab[msgindex].doit; |
e2849863 TG |
135 | } |
136 | ||
137 | static rtnl_dumpit_func rtnl_get_dumpit(int protocol, int msgindex) | |
138 | { | |
139 | struct rtnl_link *tab; | |
140 | ||
25239cee | 141 | if (protocol <= RTNL_FAMILY_MAX) |
0f87b1dd PM |
142 | tab = rtnl_msg_handlers[protocol]; |
143 | else | |
144 | tab = NULL; | |
145 | ||
51057f2f | 146 | if (tab == NULL || tab[msgindex].dumpit == NULL) |
e2849863 TG |
147 | tab = rtnl_msg_handlers[PF_UNSPEC]; |
148 | ||
c80bbeae | 149 | return tab[msgindex].dumpit; |
e2849863 TG |
150 | } |
151 | ||
c7ac8679 GR |
152 | static rtnl_calcit_func rtnl_get_calcit(int protocol, int msgindex) |
153 | { | |
154 | struct rtnl_link *tab; | |
155 | ||
156 | if (protocol <= RTNL_FAMILY_MAX) | |
157 | tab = rtnl_msg_handlers[protocol]; | |
158 | else | |
159 | tab = NULL; | |
160 | ||
161 | if (tab == NULL || tab[msgindex].calcit == NULL) | |
162 | tab = rtnl_msg_handlers[PF_UNSPEC]; | |
163 | ||
c80bbeae | 164 | return tab[msgindex].calcit; |
c7ac8679 GR |
165 | } |
166 | ||
e2849863 TG |
167 | /** |
168 | * __rtnl_register - Register a rtnetlink message type | |
169 | * @protocol: Protocol family or PF_UNSPEC | |
170 | * @msgtype: rtnetlink message type | |
171 | * @doit: Function pointer called for each request message | |
172 | * @dumpit: Function pointer called for each dump request (NLM_F_DUMP) message | |
c7ac8679 | 173 | * @calcit: Function pointer to calc size of dump message |
e2849863 TG |
174 | * |
175 | * Registers the specified function pointers (at least one of them has | |
176 | * to be non-NULL) to be called whenever a request message for the | |
177 | * specified protocol family and message type is received. | |
178 | * | |
179 | * The special protocol family PF_UNSPEC may be used to define fallback | |
180 | * function pointers for the case when no entry for the specific protocol | |
181 | * family exists. | |
182 | * | |
183 | * Returns 0 on success or a negative error code. | |
184 | */ | |
185 | int __rtnl_register(int protocol, int msgtype, | |
c7ac8679 GR |
186 | rtnl_doit_func doit, rtnl_dumpit_func dumpit, |
187 | rtnl_calcit_func calcit) | |
e2849863 TG |
188 | { |
189 | struct rtnl_link *tab; | |
190 | int msgindex; | |
191 | ||
25239cee | 192 | BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX); |
e2849863 TG |
193 | msgindex = rtm_msgindex(msgtype); |
194 | ||
195 | tab = rtnl_msg_handlers[protocol]; | |
196 | if (tab == NULL) { | |
197 | tab = kcalloc(RTM_NR_MSGTYPES, sizeof(*tab), GFP_KERNEL); | |
198 | if (tab == NULL) | |
199 | return -ENOBUFS; | |
200 | ||
201 | rtnl_msg_handlers[protocol] = tab; | |
202 | } | |
203 | ||
204 | if (doit) | |
205 | tab[msgindex].doit = doit; | |
206 | ||
207 | if (dumpit) | |
208 | tab[msgindex].dumpit = dumpit; | |
209 | ||
c7ac8679 GR |
210 | if (calcit) |
211 | tab[msgindex].calcit = calcit; | |
212 | ||
e2849863 TG |
213 | return 0; |
214 | } | |
e2849863 TG |
215 | EXPORT_SYMBOL_GPL(__rtnl_register); |
216 | ||
217 | /** | |
218 | * rtnl_register - Register a rtnetlink message type | |
219 | * | |
220 | * Identical to __rtnl_register() but panics on failure. This is useful | |
221 | * as failure of this function is very unlikely, it can only happen due | |
222 | * to lack of memory when allocating the chain to store all message | |
223 | * handlers for a protocol. Meant for use in init functions where lack | |
25985edc | 224 | * of memory implies no sense in continuing. |
e2849863 TG |
225 | */ |
226 | void rtnl_register(int protocol, int msgtype, | |
c7ac8679 GR |
227 | rtnl_doit_func doit, rtnl_dumpit_func dumpit, |
228 | rtnl_calcit_func calcit) | |
e2849863 | 229 | { |
c7ac8679 | 230 | if (__rtnl_register(protocol, msgtype, doit, dumpit, calcit) < 0) |
e2849863 TG |
231 | panic("Unable to register rtnetlink message handler, " |
232 | "protocol = %d, message type = %d\n", | |
233 | protocol, msgtype); | |
234 | } | |
e2849863 TG |
235 | EXPORT_SYMBOL_GPL(rtnl_register); |
236 | ||
237 | /** | |
238 | * rtnl_unregister - Unregister a rtnetlink message type | |
239 | * @protocol: Protocol family or PF_UNSPEC | |
240 | * @msgtype: rtnetlink message type | |
241 | * | |
242 | * Returns 0 on success or a negative error code. | |
243 | */ | |
244 | int rtnl_unregister(int protocol, int msgtype) | |
245 | { | |
246 | int msgindex; | |
247 | ||
25239cee | 248 | BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX); |
e2849863 TG |
249 | msgindex = rtm_msgindex(msgtype); |
250 | ||
251 | if (rtnl_msg_handlers[protocol] == NULL) | |
252 | return -ENOENT; | |
253 | ||
254 | rtnl_msg_handlers[protocol][msgindex].doit = NULL; | |
255 | rtnl_msg_handlers[protocol][msgindex].dumpit = NULL; | |
256 | ||
257 | return 0; | |
258 | } | |
e2849863 TG |
259 | EXPORT_SYMBOL_GPL(rtnl_unregister); |
260 | ||
261 | /** | |
262 | * rtnl_unregister_all - Unregister all rtnetlink message type of a protocol | |
263 | * @protocol : Protocol family or PF_UNSPEC | |
264 | * | |
265 | * Identical to calling rtnl_unregster() for all registered message types | |
266 | * of a certain protocol family. | |
267 | */ | |
268 | void rtnl_unregister_all(int protocol) | |
269 | { | |
25239cee | 270 | BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX); |
e2849863 TG |
271 | |
272 | kfree(rtnl_msg_handlers[protocol]); | |
273 | rtnl_msg_handlers[protocol] = NULL; | |
274 | } | |
e2849863 | 275 | EXPORT_SYMBOL_GPL(rtnl_unregister_all); |
1da177e4 | 276 | |
38f7b870 PM |
277 | static LIST_HEAD(link_ops); |
278 | ||
c63044f0 ED |
279 | static const struct rtnl_link_ops *rtnl_link_ops_get(const char *kind) |
280 | { | |
281 | const struct rtnl_link_ops *ops; | |
282 | ||
283 | list_for_each_entry(ops, &link_ops, list) { | |
284 | if (!strcmp(ops->kind, kind)) | |
285 | return ops; | |
286 | } | |
287 | return NULL; | |
288 | } | |
289 | ||
38f7b870 PM |
290 | /** |
291 | * __rtnl_link_register - Register rtnl_link_ops with rtnetlink. | |
292 | * @ops: struct rtnl_link_ops * to register | |
293 | * | |
294 | * The caller must hold the rtnl_mutex. This function should be used | |
295 | * by drivers that create devices during module initialization. It | |
296 | * must be called before registering the devices. | |
297 | * | |
298 | * Returns 0 on success or a negative error code. | |
299 | */ | |
300 | int __rtnl_link_register(struct rtnl_link_ops *ops) | |
301 | { | |
c63044f0 ED |
302 | if (rtnl_link_ops_get(ops->kind)) |
303 | return -EEXIST; | |
304 | ||
b0ab2fab JP |
305 | /* The check for setup is here because if ops |
306 | * does not have that filled up, it is not possible | |
307 | * to use the ops for creating device. So do not | |
308 | * fill up dellink as well. That disables rtnl_dellink. | |
309 | */ | |
310 | if (ops->setup && !ops->dellink) | |
23289a37 | 311 | ops->dellink = unregister_netdevice_queue; |
2d85cba2 | 312 | |
38f7b870 PM |
313 | list_add_tail(&ops->list, &link_ops); |
314 | return 0; | |
315 | } | |
38f7b870 PM |
316 | EXPORT_SYMBOL_GPL(__rtnl_link_register); |
317 | ||
318 | /** | |
319 | * rtnl_link_register - Register rtnl_link_ops with rtnetlink. | |
320 | * @ops: struct rtnl_link_ops * to register | |
321 | * | |
322 | * Returns 0 on success or a negative error code. | |
323 | */ | |
324 | int rtnl_link_register(struct rtnl_link_ops *ops) | |
325 | { | |
326 | int err; | |
327 | ||
328 | rtnl_lock(); | |
329 | err = __rtnl_link_register(ops); | |
330 | rtnl_unlock(); | |
331 | return err; | |
332 | } | |
38f7b870 PM |
333 | EXPORT_SYMBOL_GPL(rtnl_link_register); |
334 | ||
669f87ba PE |
335 | static void __rtnl_kill_links(struct net *net, struct rtnl_link_ops *ops) |
336 | { | |
337 | struct net_device *dev; | |
23289a37 ED |
338 | LIST_HEAD(list_kill); |
339 | ||
669f87ba | 340 | for_each_netdev(net, dev) { |
23289a37 ED |
341 | if (dev->rtnl_link_ops == ops) |
342 | ops->dellink(dev, &list_kill); | |
669f87ba | 343 | } |
23289a37 | 344 | unregister_netdevice_many(&list_kill); |
669f87ba PE |
345 | } |
346 | ||
38f7b870 PM |
347 | /** |
348 | * __rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink. | |
349 | * @ops: struct rtnl_link_ops * to unregister | |
350 | * | |
2d85cba2 | 351 | * The caller must hold the rtnl_mutex. |
38f7b870 PM |
352 | */ |
353 | void __rtnl_link_unregister(struct rtnl_link_ops *ops) | |
354 | { | |
881d966b | 355 | struct net *net; |
2d85cba2 | 356 | |
881d966b | 357 | for_each_net(net) { |
669f87ba | 358 | __rtnl_kill_links(net, ops); |
2d85cba2 | 359 | } |
38f7b870 PM |
360 | list_del(&ops->list); |
361 | } | |
38f7b870 PM |
362 | EXPORT_SYMBOL_GPL(__rtnl_link_unregister); |
363 | ||
200b916f CW |
364 | /* Return with the rtnl_lock held when there are no network |
365 | * devices unregistering in any network namespace. | |
366 | */ | |
367 | static void rtnl_lock_unregistering_all(void) | |
368 | { | |
369 | struct net *net; | |
370 | bool unregistering; | |
ff960a73 | 371 | DEFINE_WAIT_FUNC(wait, woken_wake_function); |
200b916f | 372 | |
ff960a73 | 373 | add_wait_queue(&netdev_unregistering_wq, &wait); |
200b916f | 374 | for (;;) { |
200b916f CW |
375 | unregistering = false; |
376 | rtnl_lock(); | |
377 | for_each_net(net) { | |
378 | if (net->dev_unreg_count > 0) { | |
379 | unregistering = true; | |
380 | break; | |
381 | } | |
382 | } | |
383 | if (!unregistering) | |
384 | break; | |
385 | __rtnl_unlock(); | |
ff960a73 PZ |
386 | |
387 | wait_woken(&wait, TASK_UNINTERRUPTIBLE, MAX_SCHEDULE_TIMEOUT); | |
200b916f | 388 | } |
ff960a73 | 389 | remove_wait_queue(&netdev_unregistering_wq, &wait); |
200b916f CW |
390 | } |
391 | ||
38f7b870 PM |
392 | /** |
393 | * rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink. | |
394 | * @ops: struct rtnl_link_ops * to unregister | |
395 | */ | |
396 | void rtnl_link_unregister(struct rtnl_link_ops *ops) | |
397 | { | |
200b916f CW |
398 | /* Close the race with cleanup_net() */ |
399 | mutex_lock(&net_mutex); | |
400 | rtnl_lock_unregistering_all(); | |
38f7b870 PM |
401 | __rtnl_link_unregister(ops); |
402 | rtnl_unlock(); | |
200b916f | 403 | mutex_unlock(&net_mutex); |
38f7b870 | 404 | } |
38f7b870 PM |
405 | EXPORT_SYMBOL_GPL(rtnl_link_unregister); |
406 | ||
ba7d49b1 JP |
407 | static size_t rtnl_link_get_slave_info_data_size(const struct net_device *dev) |
408 | { | |
409 | struct net_device *master_dev; | |
410 | const struct rtnl_link_ops *ops; | |
411 | ||
412 | master_dev = netdev_master_upper_dev_get((struct net_device *) dev); | |
413 | if (!master_dev) | |
414 | return 0; | |
415 | ops = master_dev->rtnl_link_ops; | |
6049f253 | 416 | if (!ops || !ops->get_slave_size) |
ba7d49b1 JP |
417 | return 0; |
418 | /* IFLA_INFO_SLAVE_DATA + nested data */ | |
419 | return nla_total_size(sizeof(struct nlattr)) + | |
420 | ops->get_slave_size(master_dev, dev); | |
421 | } | |
422 | ||
38f7b870 PM |
423 | static size_t rtnl_link_get_size(const struct net_device *dev) |
424 | { | |
425 | const struct rtnl_link_ops *ops = dev->rtnl_link_ops; | |
426 | size_t size; | |
427 | ||
428 | if (!ops) | |
429 | return 0; | |
430 | ||
369cf77a TG |
431 | size = nla_total_size(sizeof(struct nlattr)) + /* IFLA_LINKINFO */ |
432 | nla_total_size(strlen(ops->kind) + 1); /* IFLA_INFO_KIND */ | |
38f7b870 PM |
433 | |
434 | if (ops->get_size) | |
435 | /* IFLA_INFO_DATA + nested data */ | |
369cf77a | 436 | size += nla_total_size(sizeof(struct nlattr)) + |
38f7b870 PM |
437 | ops->get_size(dev); |
438 | ||
439 | if (ops->get_xstats_size) | |
369cf77a TG |
440 | /* IFLA_INFO_XSTATS */ |
441 | size += nla_total_size(ops->get_xstats_size(dev)); | |
38f7b870 | 442 | |
ba7d49b1 JP |
443 | size += rtnl_link_get_slave_info_data_size(dev); |
444 | ||
38f7b870 PM |
445 | return size; |
446 | } | |
447 | ||
f8ff182c TG |
448 | static LIST_HEAD(rtnl_af_ops); |
449 | ||
450 | static const struct rtnl_af_ops *rtnl_af_lookup(const int family) | |
451 | { | |
452 | const struct rtnl_af_ops *ops; | |
453 | ||
454 | list_for_each_entry(ops, &rtnl_af_ops, list) { | |
455 | if (ops->family == family) | |
456 | return ops; | |
457 | } | |
458 | ||
459 | return NULL; | |
460 | } | |
461 | ||
f8ff182c TG |
462 | /** |
463 | * rtnl_af_register - Register rtnl_af_ops with rtnetlink. | |
464 | * @ops: struct rtnl_af_ops * to register | |
465 | * | |
466 | * Returns 0 on success or a negative error code. | |
467 | */ | |
3678a9d8 | 468 | void rtnl_af_register(struct rtnl_af_ops *ops) |
f8ff182c | 469 | { |
f8ff182c | 470 | rtnl_lock(); |
3678a9d8 | 471 | list_add_tail(&ops->list, &rtnl_af_ops); |
f8ff182c | 472 | rtnl_unlock(); |
f8ff182c TG |
473 | } |
474 | EXPORT_SYMBOL_GPL(rtnl_af_register); | |
475 | ||
476 | /** | |
477 | * __rtnl_af_unregister - Unregister rtnl_af_ops from rtnetlink. | |
478 | * @ops: struct rtnl_af_ops * to unregister | |
479 | * | |
480 | * The caller must hold the rtnl_mutex. | |
481 | */ | |
482 | void __rtnl_af_unregister(struct rtnl_af_ops *ops) | |
483 | { | |
484 | list_del(&ops->list); | |
485 | } | |
486 | EXPORT_SYMBOL_GPL(__rtnl_af_unregister); | |
487 | ||
488 | /** | |
489 | * rtnl_af_unregister - Unregister rtnl_af_ops from rtnetlink. | |
490 | * @ops: struct rtnl_af_ops * to unregister | |
491 | */ | |
492 | void rtnl_af_unregister(struct rtnl_af_ops *ops) | |
493 | { | |
494 | rtnl_lock(); | |
495 | __rtnl_af_unregister(ops); | |
496 | rtnl_unlock(); | |
497 | } | |
498 | EXPORT_SYMBOL_GPL(rtnl_af_unregister); | |
499 | ||
b1974ed0 AR |
500 | static size_t rtnl_link_get_af_size(const struct net_device *dev, |
501 | u32 ext_filter_mask) | |
f8ff182c TG |
502 | { |
503 | struct rtnl_af_ops *af_ops; | |
504 | size_t size; | |
505 | ||
506 | /* IFLA_AF_SPEC */ | |
507 | size = nla_total_size(sizeof(struct nlattr)); | |
508 | ||
509 | list_for_each_entry(af_ops, &rtnl_af_ops, list) { | |
510 | if (af_ops->get_link_af_size) { | |
511 | /* AF_* + nested data */ | |
512 | size += nla_total_size(sizeof(struct nlattr)) + | |
b1974ed0 | 513 | af_ops->get_link_af_size(dev, ext_filter_mask); |
f8ff182c TG |
514 | } |
515 | } | |
516 | ||
517 | return size; | |
518 | } | |
519 | ||
ba7d49b1 | 520 | static bool rtnl_have_link_slave_info(const struct net_device *dev) |
38f7b870 | 521 | { |
ba7d49b1 | 522 | struct net_device *master_dev; |
38f7b870 | 523 | |
ba7d49b1 | 524 | master_dev = netdev_master_upper_dev_get((struct net_device *) dev); |
813f020c | 525 | if (master_dev && master_dev->rtnl_link_ops) |
ba7d49b1 JP |
526 | return true; |
527 | return false; | |
528 | } | |
529 | ||
530 | static int rtnl_link_slave_info_fill(struct sk_buff *skb, | |
531 | const struct net_device *dev) | |
532 | { | |
533 | struct net_device *master_dev; | |
534 | const struct rtnl_link_ops *ops; | |
535 | struct nlattr *slave_data; | |
536 | int err; | |
38f7b870 | 537 | |
ba7d49b1 JP |
538 | master_dev = netdev_master_upper_dev_get((struct net_device *) dev); |
539 | if (!master_dev) | |
540 | return 0; | |
541 | ops = master_dev->rtnl_link_ops; | |
542 | if (!ops) | |
543 | return 0; | |
544 | if (nla_put_string(skb, IFLA_INFO_SLAVE_KIND, ops->kind) < 0) | |
545 | return -EMSGSIZE; | |
546 | if (ops->fill_slave_info) { | |
547 | slave_data = nla_nest_start(skb, IFLA_INFO_SLAVE_DATA); | |
548 | if (!slave_data) | |
549 | return -EMSGSIZE; | |
550 | err = ops->fill_slave_info(skb, master_dev, dev); | |
551 | if (err < 0) | |
552 | goto err_cancel_slave_data; | |
553 | nla_nest_end(skb, slave_data); | |
554 | } | |
555 | return 0; | |
556 | ||
557 | err_cancel_slave_data: | |
558 | nla_nest_cancel(skb, slave_data); | |
559 | return err; | |
560 | } | |
561 | ||
562 | static int rtnl_link_info_fill(struct sk_buff *skb, | |
563 | const struct net_device *dev) | |
564 | { | |
565 | const struct rtnl_link_ops *ops = dev->rtnl_link_ops; | |
566 | struct nlattr *data; | |
567 | int err; | |
568 | ||
569 | if (!ops) | |
570 | return 0; | |
38f7b870 | 571 | if (nla_put_string(skb, IFLA_INFO_KIND, ops->kind) < 0) |
ba7d49b1 | 572 | return -EMSGSIZE; |
38f7b870 PM |
573 | if (ops->fill_xstats) { |
574 | err = ops->fill_xstats(skb, dev); | |
575 | if (err < 0) | |
ba7d49b1 | 576 | return err; |
38f7b870 PM |
577 | } |
578 | if (ops->fill_info) { | |
579 | data = nla_nest_start(skb, IFLA_INFO_DATA); | |
ba7d49b1 JP |
580 | if (data == NULL) |
581 | return -EMSGSIZE; | |
38f7b870 PM |
582 | err = ops->fill_info(skb, dev); |
583 | if (err < 0) | |
584 | goto err_cancel_data; | |
585 | nla_nest_end(skb, data); | |
586 | } | |
38f7b870 PM |
587 | return 0; |
588 | ||
589 | err_cancel_data: | |
590 | nla_nest_cancel(skb, data); | |
ba7d49b1 JP |
591 | return err; |
592 | } | |
593 | ||
594 | static int rtnl_link_fill(struct sk_buff *skb, const struct net_device *dev) | |
595 | { | |
596 | struct nlattr *linkinfo; | |
597 | int err = -EMSGSIZE; | |
598 | ||
599 | linkinfo = nla_nest_start(skb, IFLA_LINKINFO); | |
600 | if (linkinfo == NULL) | |
601 | goto out; | |
602 | ||
603 | err = rtnl_link_info_fill(skb, dev); | |
604 | if (err < 0) | |
605 | goto err_cancel_link; | |
606 | ||
607 | err = rtnl_link_slave_info_fill(skb, dev); | |
608 | if (err < 0) | |
609 | goto err_cancel_link; | |
610 | ||
611 | nla_nest_end(skb, linkinfo); | |
612 | return 0; | |
613 | ||
38f7b870 PM |
614 | err_cancel_link: |
615 | nla_nest_cancel(skb, linkinfo); | |
616 | out: | |
617 | return err; | |
618 | } | |
619 | ||
95c96174 | 620 | int rtnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, unsigned int group, int echo) |
1da177e4 | 621 | { |
97c53cac | 622 | struct sock *rtnl = net->rtnl; |
1da177e4 LT |
623 | int err = 0; |
624 | ||
ac6d439d | 625 | NETLINK_CB(skb).dst_group = group; |
1da177e4 LT |
626 | if (echo) |
627 | atomic_inc(&skb->users); | |
628 | netlink_broadcast(rtnl, skb, pid, group, GFP_KERNEL); | |
629 | if (echo) | |
630 | err = netlink_unicast(rtnl, skb, pid, MSG_DONTWAIT); | |
631 | return err; | |
632 | } | |
633 | ||
97c53cac | 634 | int rtnl_unicast(struct sk_buff *skb, struct net *net, u32 pid) |
2942e900 | 635 | { |
97c53cac DL |
636 | struct sock *rtnl = net->rtnl; |
637 | ||
2942e900 TG |
638 | return nlmsg_unicast(rtnl, skb, pid); |
639 | } | |
e0d087af | 640 | EXPORT_SYMBOL(rtnl_unicast); |
2942e900 | 641 | |
1ce85fe4 PNA |
642 | void rtnl_notify(struct sk_buff *skb, struct net *net, u32 pid, u32 group, |
643 | struct nlmsghdr *nlh, gfp_t flags) | |
97676b6b | 644 | { |
97c53cac | 645 | struct sock *rtnl = net->rtnl; |
97676b6b TG |
646 | int report = 0; |
647 | ||
648 | if (nlh) | |
649 | report = nlmsg_report(nlh); | |
650 | ||
1ce85fe4 | 651 | nlmsg_notify(rtnl, skb, pid, group, report, flags); |
97676b6b | 652 | } |
e0d087af | 653 | EXPORT_SYMBOL(rtnl_notify); |
97676b6b | 654 | |
97c53cac | 655 | void rtnl_set_sk_err(struct net *net, u32 group, int error) |
97676b6b | 656 | { |
97c53cac DL |
657 | struct sock *rtnl = net->rtnl; |
658 | ||
97676b6b TG |
659 | netlink_set_err(rtnl, 0, group, error); |
660 | } | |
e0d087af | 661 | EXPORT_SYMBOL(rtnl_set_sk_err); |
97676b6b | 662 | |
1da177e4 LT |
663 | int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics) |
664 | { | |
2d7202bf TG |
665 | struct nlattr *mx; |
666 | int i, valid = 0; | |
667 | ||
668 | mx = nla_nest_start(skb, RTA_METRICS); | |
669 | if (mx == NULL) | |
670 | return -ENOBUFS; | |
671 | ||
672 | for (i = 0; i < RTAX_MAX; i++) { | |
673 | if (metrics[i]) { | |
ea697639 DB |
674 | if (i == RTAX_CC_ALGO - 1) { |
675 | char tmp[TCP_CA_NAME_MAX], *name; | |
676 | ||
677 | name = tcp_ca_get_name_by_key(metrics[i], tmp); | |
678 | if (!name) | |
679 | continue; | |
680 | if (nla_put_string(skb, i + 1, name)) | |
681 | goto nla_put_failure; | |
c3a8d947 DB |
682 | } else if (i == RTAX_FEATURES - 1) { |
683 | u32 user_features = metrics[i] & RTAX_FEATURE_MASK; | |
684 | ||
685 | BUILD_BUG_ON(RTAX_FEATURE_MASK & DST_FEATURE_MASK); | |
686 | if (nla_put_u32(skb, i + 1, user_features)) | |
687 | goto nla_put_failure; | |
ea697639 DB |
688 | } else { |
689 | if (nla_put_u32(skb, i + 1, metrics[i])) | |
690 | goto nla_put_failure; | |
691 | } | |
2d7202bf | 692 | valid++; |
2d7202bf | 693 | } |
1da177e4 | 694 | } |
1da177e4 | 695 | |
a57d27fc DM |
696 | if (!valid) { |
697 | nla_nest_cancel(skb, mx); | |
698 | return 0; | |
699 | } | |
2d7202bf TG |
700 | |
701 | return nla_nest_end(skb, mx); | |
702 | ||
703 | nla_put_failure: | |
bc3ed28c TG |
704 | nla_nest_cancel(skb, mx); |
705 | return -EMSGSIZE; | |
1da177e4 | 706 | } |
e0d087af | 707 | EXPORT_SYMBOL(rtnetlink_put_metrics); |
1da177e4 | 708 | |
e3703b3d | 709 | int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst, u32 id, |
87a50699 | 710 | long expires, u32 error) |
e3703b3d TG |
711 | { |
712 | struct rta_cacheinfo ci = { | |
a399a805 | 713 | .rta_lastuse = jiffies_delta_to_clock_t(jiffies - dst->lastuse), |
e3703b3d TG |
714 | .rta_used = dst->__use, |
715 | .rta_clntref = atomic_read(&(dst->__refcnt)), | |
716 | .rta_error = error, | |
717 | .rta_id = id, | |
e3703b3d TG |
718 | }; |
719 | ||
8253947e LW |
720 | if (expires) { |
721 | unsigned long clock; | |
e3703b3d | 722 | |
8253947e LW |
723 | clock = jiffies_to_clock_t(abs(expires)); |
724 | clock = min_t(unsigned long, clock, INT_MAX); | |
725 | ci.rta_expires = (expires > 0) ? clock : -clock; | |
726 | } | |
e3703b3d TG |
727 | return nla_put(skb, RTA_CACHEINFO, sizeof(ci), &ci); |
728 | } | |
e3703b3d | 729 | EXPORT_SYMBOL_GPL(rtnl_put_cacheinfo); |
1da177e4 | 730 | |
93b2d4a2 | 731 | static void set_operstate(struct net_device *dev, unsigned char transition) |
b00055aa SR |
732 | { |
733 | unsigned char operstate = dev->operstate; | |
734 | ||
e0d087af | 735 | switch (transition) { |
b00055aa SR |
736 | case IF_OPER_UP: |
737 | if ((operstate == IF_OPER_DORMANT || | |
738 | operstate == IF_OPER_UNKNOWN) && | |
739 | !netif_dormant(dev)) | |
740 | operstate = IF_OPER_UP; | |
741 | break; | |
742 | ||
743 | case IF_OPER_DORMANT: | |
744 | if (operstate == IF_OPER_UP || | |
745 | operstate == IF_OPER_UNKNOWN) | |
746 | operstate = IF_OPER_DORMANT; | |
747 | break; | |
3ff50b79 | 748 | } |
b00055aa SR |
749 | |
750 | if (dev->operstate != operstate) { | |
751 | write_lock_bh(&dev_base_lock); | |
752 | dev->operstate = operstate; | |
753 | write_unlock_bh(&dev_base_lock); | |
93b2d4a2 DM |
754 | netdev_state_change(dev); |
755 | } | |
b00055aa SR |
756 | } |
757 | ||
b1beb681 JB |
758 | static unsigned int rtnl_dev_get_flags(const struct net_device *dev) |
759 | { | |
760 | return (dev->flags & ~(IFF_PROMISC | IFF_ALLMULTI)) | | |
761 | (dev->gflags & (IFF_PROMISC | IFF_ALLMULTI)); | |
762 | } | |
763 | ||
3729d502 PM |
764 | static unsigned int rtnl_dev_combine_flags(const struct net_device *dev, |
765 | const struct ifinfomsg *ifm) | |
766 | { | |
767 | unsigned int flags = ifm->ifi_flags; | |
768 | ||
769 | /* bugwards compatibility: ifi_change == 0 is treated as ~0 */ | |
770 | if (ifm->ifi_change) | |
771 | flags = (flags & ifm->ifi_change) | | |
b1beb681 | 772 | (rtnl_dev_get_flags(dev) & ~ifm->ifi_change); |
3729d502 PM |
773 | |
774 | return flags; | |
775 | } | |
776 | ||
b60c5115 | 777 | static void copy_rtnl_link_stats(struct rtnl_link_stats *a, |
be1f3c2c | 778 | const struct rtnl_link_stats64 *b) |
1da177e4 | 779 | { |
b60c5115 TG |
780 | a->rx_packets = b->rx_packets; |
781 | a->tx_packets = b->tx_packets; | |
782 | a->rx_bytes = b->rx_bytes; | |
783 | a->tx_bytes = b->tx_bytes; | |
784 | a->rx_errors = b->rx_errors; | |
785 | a->tx_errors = b->tx_errors; | |
786 | a->rx_dropped = b->rx_dropped; | |
787 | a->tx_dropped = b->tx_dropped; | |
788 | ||
789 | a->multicast = b->multicast; | |
790 | a->collisions = b->collisions; | |
791 | ||
792 | a->rx_length_errors = b->rx_length_errors; | |
793 | a->rx_over_errors = b->rx_over_errors; | |
794 | a->rx_crc_errors = b->rx_crc_errors; | |
795 | a->rx_frame_errors = b->rx_frame_errors; | |
796 | a->rx_fifo_errors = b->rx_fifo_errors; | |
797 | a->rx_missed_errors = b->rx_missed_errors; | |
798 | ||
799 | a->tx_aborted_errors = b->tx_aborted_errors; | |
800 | a->tx_carrier_errors = b->tx_carrier_errors; | |
801 | a->tx_fifo_errors = b->tx_fifo_errors; | |
802 | a->tx_heartbeat_errors = b->tx_heartbeat_errors; | |
803 | a->tx_window_errors = b->tx_window_errors; | |
804 | ||
805 | a->rx_compressed = b->rx_compressed; | |
806 | a->tx_compressed = b->tx_compressed; | |
6e7333d3 JW |
807 | |
808 | a->rx_nohandler = b->rx_nohandler; | |
10708f37 JE |
809 | } |
810 | ||
c02db8c6 | 811 | /* All VF info */ |
115c9b81 GR |
812 | static inline int rtnl_vfinfo_size(const struct net_device *dev, |
813 | u32 ext_filter_mask) | |
ebc08a6f | 814 | { |
115c9b81 GR |
815 | if (dev->dev.parent && dev_is_pci(dev->dev.parent) && |
816 | (ext_filter_mask & RTEXT_FILTER_VF)) { | |
c02db8c6 | 817 | int num_vfs = dev_num_vf(dev->dev.parent); |
045de01a SF |
818 | size_t size = nla_total_size(sizeof(struct nlattr)); |
819 | size += nla_total_size(num_vfs * sizeof(struct nlattr)); | |
820 | size += num_vfs * | |
821 | (nla_total_size(sizeof(struct ifla_vf_mac)) + | |
822 | nla_total_size(sizeof(struct ifla_vf_vlan)) + | |
ed616689 | 823 | nla_total_size(sizeof(struct ifla_vf_spoofchk)) + |
945a3676 | 824 | nla_total_size(sizeof(struct ifla_vf_rate)) + |
01a3d796 | 825 | nla_total_size(sizeof(struct ifla_vf_link_state)) + |
3b766cd8 EBE |
826 | nla_total_size(sizeof(struct ifla_vf_rss_query_en)) + |
827 | /* IFLA_VF_STATS_RX_PACKETS */ | |
343a6d8e | 828 | nla_total_size_64bit(sizeof(__u64)) + |
3b766cd8 | 829 | /* IFLA_VF_STATS_TX_PACKETS */ |
343a6d8e | 830 | nla_total_size_64bit(sizeof(__u64)) + |
3b766cd8 | 831 | /* IFLA_VF_STATS_RX_BYTES */ |
343a6d8e | 832 | nla_total_size_64bit(sizeof(__u64)) + |
3b766cd8 | 833 | /* IFLA_VF_STATS_TX_BYTES */ |
343a6d8e | 834 | nla_total_size_64bit(sizeof(__u64)) + |
3b766cd8 | 835 | /* IFLA_VF_STATS_BROADCAST */ |
343a6d8e | 836 | nla_total_size_64bit(sizeof(__u64)) + |
3b766cd8 | 837 | /* IFLA_VF_STATS_MULTICAST */ |
343a6d8e | 838 | nla_total_size_64bit(sizeof(__u64)) + |
dd461d6a | 839 | nla_total_size(sizeof(struct ifla_vf_trust))); |
c02db8c6 CW |
840 | return size; |
841 | } else | |
ebc08a6f WM |
842 | return 0; |
843 | } | |
844 | ||
c53864fd DG |
845 | static size_t rtnl_port_size(const struct net_device *dev, |
846 | u32 ext_filter_mask) | |
57b61080 SF |
847 | { |
848 | size_t port_size = nla_total_size(4) /* PORT_VF */ | |
849 | + nla_total_size(PORT_PROFILE_MAX) /* PORT_PROFILE */ | |
850 | + nla_total_size(sizeof(struct ifla_port_vsi)) | |
851 | /* PORT_VSI_TYPE */ | |
852 | + nla_total_size(PORT_UUID_MAX) /* PORT_INSTANCE_UUID */ | |
853 | + nla_total_size(PORT_UUID_MAX) /* PORT_HOST_UUID */ | |
854 | + nla_total_size(1) /* PROT_VDP_REQUEST */ | |
855 | + nla_total_size(2); /* PORT_VDP_RESPONSE */ | |
856 | size_t vf_ports_size = nla_total_size(sizeof(struct nlattr)); | |
857 | size_t vf_port_size = nla_total_size(sizeof(struct nlattr)) | |
858 | + port_size; | |
859 | size_t port_self_size = nla_total_size(sizeof(struct nlattr)) | |
860 | + port_size; | |
861 | ||
c53864fd DG |
862 | if (!dev->netdev_ops->ndo_get_vf_port || !dev->dev.parent || |
863 | !(ext_filter_mask & RTEXT_FILTER_VF)) | |
57b61080 SF |
864 | return 0; |
865 | if (dev_num_vf(dev->dev.parent)) | |
866 | return port_self_size + vf_ports_size + | |
867 | vf_port_size * dev_num_vf(dev->dev.parent); | |
868 | else | |
869 | return port_self_size; | |
870 | } | |
871 | ||
115c9b81 GR |
872 | static noinline size_t if_nlmsg_size(const struct net_device *dev, |
873 | u32 ext_filter_mask) | |
339bf98f TG |
874 | { |
875 | return NLMSG_ALIGN(sizeof(struct ifinfomsg)) | |
876 | + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */ | |
0b815a1a | 877 | + nla_total_size(IFALIASZ) /* IFLA_IFALIAS */ |
339bf98f | 878 | + nla_total_size(IFNAMSIZ) /* IFLA_QDISC */ |
270cb4d0 | 879 | + nla_total_size_64bit(sizeof(struct rtnl_link_ifmap)) |
339bf98f | 880 | + nla_total_size(sizeof(struct rtnl_link_stats)) |
35c58459 | 881 | + nla_total_size_64bit(sizeof(struct rtnl_link_stats64)) |
339bf98f TG |
882 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */ |
883 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_BROADCAST */ | |
884 | + nla_total_size(4) /* IFLA_TXQLEN */ | |
885 | + nla_total_size(4) /* IFLA_WEIGHT */ | |
886 | + nla_total_size(4) /* IFLA_MTU */ | |
887 | + nla_total_size(4) /* IFLA_LINK */ | |
888 | + nla_total_size(4) /* IFLA_MASTER */ | |
9a57247f | 889 | + nla_total_size(1) /* IFLA_CARRIER */ |
edbc0bb3 | 890 | + nla_total_size(4) /* IFLA_PROMISCUITY */ |
76ff5cc9 JP |
891 | + nla_total_size(4) /* IFLA_NUM_TX_QUEUES */ |
892 | + nla_total_size(4) /* IFLA_NUM_RX_QUEUES */ | |
c70ce028 ED |
893 | + nla_total_size(4) /* IFLA_MAX_GSO_SEGS */ |
894 | + nla_total_size(4) /* IFLA_MAX_GSO_SIZE */ | |
339bf98f | 895 | + nla_total_size(1) /* IFLA_OPERSTATE */ |
38f7b870 | 896 | + nla_total_size(1) /* IFLA_LINKMODE */ |
2d3b479d | 897 | + nla_total_size(4) /* IFLA_CARRIER_CHANGES */ |
d37512a2 | 898 | + nla_total_size(4) /* IFLA_LINK_NETNSID */ |
115c9b81 GR |
899 | + nla_total_size(ext_filter_mask |
900 | & RTEXT_FILTER_VF ? 4 : 0) /* IFLA_NUM_VF */ | |
901 | + rtnl_vfinfo_size(dev, ext_filter_mask) /* IFLA_VFINFO_LIST */ | |
c53864fd | 902 | + rtnl_port_size(dev, ext_filter_mask) /* IFLA_VF_PORTS + IFLA_PORT_SELF */ |
f8ff182c | 903 | + rtnl_link_get_size(dev) /* IFLA_LINKINFO */ |
b1974ed0 | 904 | + rtnl_link_get_af_size(dev, ext_filter_mask) /* IFLA_AF_SPEC */ |
82f28412 | 905 | + nla_total_size(MAX_PHYS_ITEM_ID_LEN) /* IFLA_PHYS_PORT_ID */ |
88d6378b | 906 | + nla_total_size(MAX_PHYS_ITEM_ID_LEN) /* IFLA_PHYS_SWITCH_ID */ |
c57c7a95 | 907 | + nla_total_size(IFNAMSIZ) /* IFLA_PHYS_PORT_NAME */ |
88d6378b AK |
908 | + nla_total_size(1); /* IFLA_PROTO_DOWN */ |
909 | ||
339bf98f TG |
910 | } |
911 | ||
57b61080 SF |
912 | static int rtnl_vf_ports_fill(struct sk_buff *skb, struct net_device *dev) |
913 | { | |
914 | struct nlattr *vf_ports; | |
915 | struct nlattr *vf_port; | |
916 | int vf; | |
917 | int err; | |
918 | ||
919 | vf_ports = nla_nest_start(skb, IFLA_VF_PORTS); | |
920 | if (!vf_ports) | |
921 | return -EMSGSIZE; | |
922 | ||
923 | for (vf = 0; vf < dev_num_vf(dev->dev.parent); vf++) { | |
924 | vf_port = nla_nest_start(skb, IFLA_VF_PORT); | |
8ca94183 SF |
925 | if (!vf_port) |
926 | goto nla_put_failure; | |
a6574349 DM |
927 | if (nla_put_u32(skb, IFLA_PORT_VF, vf)) |
928 | goto nla_put_failure; | |
57b61080 | 929 | err = dev->netdev_ops->ndo_get_vf_port(dev, vf, skb); |
8ca94183 SF |
930 | if (err == -EMSGSIZE) |
931 | goto nla_put_failure; | |
57b61080 | 932 | if (err) { |
57b61080 SF |
933 | nla_nest_cancel(skb, vf_port); |
934 | continue; | |
935 | } | |
936 | nla_nest_end(skb, vf_port); | |
937 | } | |
938 | ||
939 | nla_nest_end(skb, vf_ports); | |
940 | ||
941 | return 0; | |
8ca94183 SF |
942 | |
943 | nla_put_failure: | |
944 | nla_nest_cancel(skb, vf_ports); | |
945 | return -EMSGSIZE; | |
57b61080 SF |
946 | } |
947 | ||
948 | static int rtnl_port_self_fill(struct sk_buff *skb, struct net_device *dev) | |
949 | { | |
950 | struct nlattr *port_self; | |
951 | int err; | |
952 | ||
953 | port_self = nla_nest_start(skb, IFLA_PORT_SELF); | |
954 | if (!port_self) | |
955 | return -EMSGSIZE; | |
956 | ||
957 | err = dev->netdev_ops->ndo_get_vf_port(dev, PORT_SELF_VF, skb); | |
958 | if (err) { | |
959 | nla_nest_cancel(skb, port_self); | |
8ca94183 | 960 | return (err == -EMSGSIZE) ? err : 0; |
57b61080 SF |
961 | } |
962 | ||
963 | nla_nest_end(skb, port_self); | |
964 | ||
965 | return 0; | |
966 | } | |
967 | ||
c53864fd DG |
968 | static int rtnl_port_fill(struct sk_buff *skb, struct net_device *dev, |
969 | u32 ext_filter_mask) | |
57b61080 SF |
970 | { |
971 | int err; | |
972 | ||
c53864fd DG |
973 | if (!dev->netdev_ops->ndo_get_vf_port || !dev->dev.parent || |
974 | !(ext_filter_mask & RTEXT_FILTER_VF)) | |
57b61080 SF |
975 | return 0; |
976 | ||
977 | err = rtnl_port_self_fill(skb, dev); | |
978 | if (err) | |
979 | return err; | |
980 | ||
981 | if (dev_num_vf(dev->dev.parent)) { | |
982 | err = rtnl_vf_ports_fill(skb, dev); | |
983 | if (err) | |
984 | return err; | |
985 | } | |
986 | ||
987 | return 0; | |
988 | } | |
989 | ||
66cae9ed JP |
990 | static int rtnl_phys_port_id_fill(struct sk_buff *skb, struct net_device *dev) |
991 | { | |
992 | int err; | |
02637fce | 993 | struct netdev_phys_item_id ppid; |
66cae9ed JP |
994 | |
995 | err = dev_get_phys_port_id(dev, &ppid); | |
996 | if (err) { | |
997 | if (err == -EOPNOTSUPP) | |
998 | return 0; | |
999 | return err; | |
1000 | } | |
1001 | ||
1002 | if (nla_put(skb, IFLA_PHYS_PORT_ID, ppid.id_len, ppid.id)) | |
1003 | return -EMSGSIZE; | |
1004 | ||
1005 | return 0; | |
1006 | } | |
1007 | ||
db24a904 DA |
1008 | static int rtnl_phys_port_name_fill(struct sk_buff *skb, struct net_device *dev) |
1009 | { | |
1010 | char name[IFNAMSIZ]; | |
1011 | int err; | |
1012 | ||
1013 | err = dev_get_phys_port_name(dev, name, sizeof(name)); | |
1014 | if (err) { | |
1015 | if (err == -EOPNOTSUPP) | |
1016 | return 0; | |
1017 | return err; | |
1018 | } | |
1019 | ||
1020 | if (nla_put(skb, IFLA_PHYS_PORT_NAME, strlen(name), name)) | |
1021 | return -EMSGSIZE; | |
1022 | ||
1023 | return 0; | |
1024 | } | |
1025 | ||
82f28412 JP |
1026 | static int rtnl_phys_switch_id_fill(struct sk_buff *skb, struct net_device *dev) |
1027 | { | |
1028 | int err; | |
f8e20a9f | 1029 | struct switchdev_attr attr = { |
6ff64f6f | 1030 | .orig_dev = dev, |
1f868398 | 1031 | .id = SWITCHDEV_ATTR_ID_PORT_PARENT_ID, |
f8e20a9f SF |
1032 | .flags = SWITCHDEV_F_NO_RECURSE, |
1033 | }; | |
82f28412 | 1034 | |
f8e20a9f | 1035 | err = switchdev_port_attr_get(dev, &attr); |
82f28412 JP |
1036 | if (err) { |
1037 | if (err == -EOPNOTSUPP) | |
1038 | return 0; | |
1039 | return err; | |
1040 | } | |
1041 | ||
42275bd8 SF |
1042 | if (nla_put(skb, IFLA_PHYS_SWITCH_ID, attr.u.ppid.id_len, |
1043 | attr.u.ppid.id)) | |
82f28412 JP |
1044 | return -EMSGSIZE; |
1045 | ||
1046 | return 0; | |
1047 | } | |
1048 | ||
b22b941b HFS |
1049 | static noinline_for_stack int rtnl_fill_stats(struct sk_buff *skb, |
1050 | struct net_device *dev) | |
1051 | { | |
550bce59 | 1052 | struct rtnl_link_stats64 *sp; |
b22b941b | 1053 | struct nlattr *attr; |
18402843 | 1054 | |
58414d32 ND |
1055 | attr = nla_reserve_64bit(skb, IFLA_STATS64, |
1056 | sizeof(struct rtnl_link_stats64), IFLA_PAD); | |
b22b941b HFS |
1057 | if (!attr) |
1058 | return -EMSGSIZE; | |
1059 | ||
550bce59 RP |
1060 | sp = nla_data(attr); |
1061 | dev_get_stats(dev, sp); | |
b22b941b | 1062 | |
550bce59 RP |
1063 | attr = nla_reserve(skb, IFLA_STATS, |
1064 | sizeof(struct rtnl_link_stats)); | |
b22b941b HFS |
1065 | if (!attr) |
1066 | return -EMSGSIZE; | |
1067 | ||
550bce59 | 1068 | copy_rtnl_link_stats(nla_data(attr), sp); |
b22b941b HFS |
1069 | |
1070 | return 0; | |
1071 | } | |
1072 | ||
1073 | static noinline_for_stack int rtnl_fill_vfinfo(struct sk_buff *skb, | |
1074 | struct net_device *dev, | |
1075 | int vfs_num, | |
1076 | struct nlattr *vfinfo) | |
1077 | { | |
1078 | struct ifla_vf_rss_query_en vf_rss_query_en; | |
1079 | struct ifla_vf_link_state vf_linkstate; | |
1080 | struct ifla_vf_spoofchk vf_spoofchk; | |
1081 | struct ifla_vf_tx_rate vf_tx_rate; | |
1082 | struct ifla_vf_stats vf_stats; | |
1083 | struct ifla_vf_trust vf_trust; | |
1084 | struct ifla_vf_vlan vf_vlan; | |
1085 | struct ifla_vf_rate vf_rate; | |
1086 | struct nlattr *vf, *vfstats; | |
1087 | struct ifla_vf_mac vf_mac; | |
1088 | struct ifla_vf_info ivi; | |
1089 | ||
1090 | /* Not all SR-IOV capable drivers support the | |
1091 | * spoofcheck and "RSS query enable" query. Preset to | |
1092 | * -1 so the user space tool can detect that the driver | |
1093 | * didn't report anything. | |
1094 | */ | |
1095 | ivi.spoofchk = -1; | |
1096 | ivi.rss_query_en = -1; | |
1097 | ivi.trusted = -1; | |
1098 | memset(ivi.mac, 0, sizeof(ivi.mac)); | |
1099 | /* The default value for VF link state is "auto" | |
1100 | * IFLA_VF_LINK_STATE_AUTO which equals zero | |
1101 | */ | |
1102 | ivi.linkstate = 0; | |
1103 | if (dev->netdev_ops->ndo_get_vf_config(dev, vfs_num, &ivi)) | |
1104 | return 0; | |
1105 | ||
1106 | vf_mac.vf = | |
1107 | vf_vlan.vf = | |
1108 | vf_rate.vf = | |
1109 | vf_tx_rate.vf = | |
1110 | vf_spoofchk.vf = | |
1111 | vf_linkstate.vf = | |
1112 | vf_rss_query_en.vf = | |
1113 | vf_trust.vf = ivi.vf; | |
1114 | ||
1115 | memcpy(vf_mac.mac, ivi.mac, sizeof(ivi.mac)); | |
1116 | vf_vlan.vlan = ivi.vlan; | |
1117 | vf_vlan.qos = ivi.qos; | |
1118 | vf_tx_rate.rate = ivi.max_tx_rate; | |
1119 | vf_rate.min_tx_rate = ivi.min_tx_rate; | |
1120 | vf_rate.max_tx_rate = ivi.max_tx_rate; | |
1121 | vf_spoofchk.setting = ivi.spoofchk; | |
1122 | vf_linkstate.link_state = ivi.linkstate; | |
1123 | vf_rss_query_en.setting = ivi.rss_query_en; | |
1124 | vf_trust.setting = ivi.trusted; | |
1125 | vf = nla_nest_start(skb, IFLA_VF_INFO); | |
1126 | if (!vf) { | |
1127 | nla_nest_cancel(skb, vfinfo); | |
1128 | return -EMSGSIZE; | |
1129 | } | |
1130 | if (nla_put(skb, IFLA_VF_MAC, sizeof(vf_mac), &vf_mac) || | |
1131 | nla_put(skb, IFLA_VF_VLAN, sizeof(vf_vlan), &vf_vlan) || | |
1132 | nla_put(skb, IFLA_VF_RATE, sizeof(vf_rate), | |
1133 | &vf_rate) || | |
1134 | nla_put(skb, IFLA_VF_TX_RATE, sizeof(vf_tx_rate), | |
1135 | &vf_tx_rate) || | |
1136 | nla_put(skb, IFLA_VF_SPOOFCHK, sizeof(vf_spoofchk), | |
1137 | &vf_spoofchk) || | |
1138 | nla_put(skb, IFLA_VF_LINK_STATE, sizeof(vf_linkstate), | |
1139 | &vf_linkstate) || | |
1140 | nla_put(skb, IFLA_VF_RSS_QUERY_EN, | |
1141 | sizeof(vf_rss_query_en), | |
1142 | &vf_rss_query_en) || | |
1143 | nla_put(skb, IFLA_VF_TRUST, | |
1144 | sizeof(vf_trust), &vf_trust)) | |
1145 | return -EMSGSIZE; | |
1146 | memset(&vf_stats, 0, sizeof(vf_stats)); | |
1147 | if (dev->netdev_ops->ndo_get_vf_stats) | |
1148 | dev->netdev_ops->ndo_get_vf_stats(dev, vfs_num, | |
1149 | &vf_stats); | |
1150 | vfstats = nla_nest_start(skb, IFLA_VF_STATS); | |
1151 | if (!vfstats) { | |
1152 | nla_nest_cancel(skb, vf); | |
1153 | nla_nest_cancel(skb, vfinfo); | |
1154 | return -EMSGSIZE; | |
1155 | } | |
343a6d8e ND |
1156 | if (nla_put_u64_64bit(skb, IFLA_VF_STATS_RX_PACKETS, |
1157 | vf_stats.rx_packets, IFLA_VF_STATS_PAD) || | |
1158 | nla_put_u64_64bit(skb, IFLA_VF_STATS_TX_PACKETS, | |
1159 | vf_stats.tx_packets, IFLA_VF_STATS_PAD) || | |
1160 | nla_put_u64_64bit(skb, IFLA_VF_STATS_RX_BYTES, | |
1161 | vf_stats.rx_bytes, IFLA_VF_STATS_PAD) || | |
1162 | nla_put_u64_64bit(skb, IFLA_VF_STATS_TX_BYTES, | |
1163 | vf_stats.tx_bytes, IFLA_VF_STATS_PAD) || | |
1164 | nla_put_u64_64bit(skb, IFLA_VF_STATS_BROADCAST, | |
1165 | vf_stats.broadcast, IFLA_VF_STATS_PAD) || | |
1166 | nla_put_u64_64bit(skb, IFLA_VF_STATS_MULTICAST, | |
1167 | vf_stats.multicast, IFLA_VF_STATS_PAD)) | |
b22b941b HFS |
1168 | return -EMSGSIZE; |
1169 | nla_nest_end(skb, vfstats); | |
1170 | nla_nest_end(skb, vf); | |
1171 | return 0; | |
1172 | } | |
1173 | ||
1174 | static int rtnl_fill_link_ifmap(struct sk_buff *skb, struct net_device *dev) | |
1175 | { | |
5f8e4474 KL |
1176 | struct rtnl_link_ifmap map; |
1177 | ||
1178 | memset(&map, 0, sizeof(map)); | |
1179 | map.mem_start = dev->mem_start; | |
1180 | map.mem_end = dev->mem_end; | |
1181 | map.base_addr = dev->base_addr; | |
1182 | map.irq = dev->irq; | |
1183 | map.dma = dev->dma; | |
1184 | map.port = dev->if_port; | |
1185 | ||
270cb4d0 | 1186 | if (nla_put_64bit(skb, IFLA_MAP, sizeof(map), &map, IFLA_PAD)) |
b22b941b HFS |
1187 | return -EMSGSIZE; |
1188 | ||
1189 | return 0; | |
1190 | } | |
1191 | ||
b60c5115 | 1192 | static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev, |
575c3e2a | 1193 | int type, u32 pid, u32 seq, u32 change, |
115c9b81 | 1194 | unsigned int flags, u32 ext_filter_mask) |
b60c5115 TG |
1195 | { |
1196 | struct ifinfomsg *ifm; | |
1197 | struct nlmsghdr *nlh; | |
b22b941b | 1198 | struct nlattr *af_spec; |
f8ff182c | 1199 | struct rtnl_af_ops *af_ops; |
898e5061 | 1200 | struct net_device *upper_dev = netdev_master_upper_dev_get(dev); |
1da177e4 | 1201 | |
2907c35f | 1202 | ASSERT_RTNL(); |
b60c5115 TG |
1203 | nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ifm), flags); |
1204 | if (nlh == NULL) | |
26932566 | 1205 | return -EMSGSIZE; |
1da177e4 | 1206 | |
b60c5115 TG |
1207 | ifm = nlmsg_data(nlh); |
1208 | ifm->ifi_family = AF_UNSPEC; | |
1209 | ifm->__ifi_pad = 0; | |
1210 | ifm->ifi_type = dev->type; | |
1211 | ifm->ifi_index = dev->ifindex; | |
1212 | ifm->ifi_flags = dev_get_flags(dev); | |
1213 | ifm->ifi_change = change; | |
1214 | ||
a6574349 DM |
1215 | if (nla_put_string(skb, IFLA_IFNAME, dev->name) || |
1216 | nla_put_u32(skb, IFLA_TXQLEN, dev->tx_queue_len) || | |
1217 | nla_put_u8(skb, IFLA_OPERSTATE, | |
1218 | netif_running(dev) ? dev->operstate : IF_OPER_DOWN) || | |
1219 | nla_put_u8(skb, IFLA_LINKMODE, dev->link_mode) || | |
1220 | nla_put_u32(skb, IFLA_MTU, dev->mtu) || | |
1221 | nla_put_u32(skb, IFLA_GROUP, dev->group) || | |
edbc0bb3 | 1222 | nla_put_u32(skb, IFLA_PROMISCUITY, dev->promiscuity) || |
76ff5cc9 | 1223 | nla_put_u32(skb, IFLA_NUM_TX_QUEUES, dev->num_tx_queues) || |
c70ce028 ED |
1224 | nla_put_u32(skb, IFLA_GSO_MAX_SEGS, dev->gso_max_segs) || |
1225 | nla_put_u32(skb, IFLA_GSO_MAX_SIZE, dev->gso_max_size) || | |
1d69c2b3 | 1226 | #ifdef CONFIG_RPS |
76ff5cc9 | 1227 | nla_put_u32(skb, IFLA_NUM_RX_QUEUES, dev->num_rx_queues) || |
1d69c2b3 | 1228 | #endif |
a54acb3a ND |
1229 | (dev->ifindex != dev_get_iflink(dev) && |
1230 | nla_put_u32(skb, IFLA_LINK, dev_get_iflink(dev))) || | |
898e5061 JP |
1231 | (upper_dev && |
1232 | nla_put_u32(skb, IFLA_MASTER, upper_dev->ifindex)) || | |
9a57247f | 1233 | nla_put_u8(skb, IFLA_CARRIER, netif_carrier_ok(dev)) || |
a6574349 DM |
1234 | (dev->qdisc && |
1235 | nla_put_string(skb, IFLA_QDISC, dev->qdisc->ops->id)) || | |
1236 | (dev->ifalias && | |
2d3b479d | 1237 | nla_put_string(skb, IFLA_IFALIAS, dev->ifalias)) || |
1238 | nla_put_u32(skb, IFLA_CARRIER_CHANGES, | |
88d6378b AK |
1239 | atomic_read(&dev->carrier_changes)) || |
1240 | nla_put_u8(skb, IFLA_PROTO_DOWN, dev->proto_down)) | |
a6574349 | 1241 | goto nla_put_failure; |
0b815a1a | 1242 | |
b22b941b HFS |
1243 | if (rtnl_fill_link_ifmap(skb, dev)) |
1244 | goto nla_put_failure; | |
1da177e4 LT |
1245 | |
1246 | if (dev->addr_len) { | |
a6574349 DM |
1247 | if (nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr) || |
1248 | nla_put(skb, IFLA_BROADCAST, dev->addr_len, dev->broadcast)) | |
1249 | goto nla_put_failure; | |
1da177e4 LT |
1250 | } |
1251 | ||
66cae9ed JP |
1252 | if (rtnl_phys_port_id_fill(skb, dev)) |
1253 | goto nla_put_failure; | |
1254 | ||
db24a904 DA |
1255 | if (rtnl_phys_port_name_fill(skb, dev)) |
1256 | goto nla_put_failure; | |
1257 | ||
82f28412 JP |
1258 | if (rtnl_phys_switch_id_fill(skb, dev)) |
1259 | goto nla_put_failure; | |
1260 | ||
b22b941b | 1261 | if (rtnl_fill_stats(skb, dev)) |
10708f37 | 1262 | goto nla_put_failure; |
10708f37 | 1263 | |
a6574349 DM |
1264 | if (dev->dev.parent && (ext_filter_mask & RTEXT_FILTER_VF) && |
1265 | nla_put_u32(skb, IFLA_NUM_VF, dev_num_vf(dev->dev.parent))) | |
1266 | goto nla_put_failure; | |
57b61080 | 1267 | |
b22b941b HFS |
1268 | if (dev->netdev_ops->ndo_get_vf_config && dev->dev.parent && |
1269 | ext_filter_mask & RTEXT_FILTER_VF) { | |
ebc08a6f | 1270 | int i; |
b22b941b | 1271 | struct nlattr *vfinfo; |
c02db8c6 CW |
1272 | int num_vfs = dev_num_vf(dev->dev.parent); |
1273 | ||
c02db8c6 CW |
1274 | vfinfo = nla_nest_start(skb, IFLA_VFINFO_LIST); |
1275 | if (!vfinfo) | |
1276 | goto nla_put_failure; | |
1277 | for (i = 0; i < num_vfs; i++) { | |
b22b941b | 1278 | if (rtnl_fill_vfinfo(skb, dev, i, vfinfo)) |
3b766cd8 | 1279 | goto nla_put_failure; |
ebc08a6f | 1280 | } |
b22b941b | 1281 | |
c02db8c6 | 1282 | nla_nest_end(skb, vfinfo); |
ebc08a6f | 1283 | } |
57b61080 | 1284 | |
c53864fd | 1285 | if (rtnl_port_fill(skb, dev, ext_filter_mask)) |
57b61080 SF |
1286 | goto nla_put_failure; |
1287 | ||
ba7d49b1 | 1288 | if (dev->rtnl_link_ops || rtnl_have_link_slave_info(dev)) { |
38f7b870 PM |
1289 | if (rtnl_link_fill(skb, dev) < 0) |
1290 | goto nla_put_failure; | |
1291 | } | |
1292 | ||
d37512a2 ND |
1293 | if (dev->rtnl_link_ops && |
1294 | dev->rtnl_link_ops->get_link_net) { | |
1295 | struct net *link_net = dev->rtnl_link_ops->get_link_net(dev); | |
1296 | ||
1297 | if (!net_eq(dev_net(dev), link_net)) { | |
7a0877d4 | 1298 | int id = peernet2id_alloc(dev_net(dev), link_net); |
d37512a2 ND |
1299 | |
1300 | if (nla_put_s32(skb, IFLA_LINK_NETNSID, id)) | |
1301 | goto nla_put_failure; | |
1302 | } | |
1303 | } | |
1304 | ||
f8ff182c TG |
1305 | if (!(af_spec = nla_nest_start(skb, IFLA_AF_SPEC))) |
1306 | goto nla_put_failure; | |
1307 | ||
1308 | list_for_each_entry(af_ops, &rtnl_af_ops, list) { | |
1309 | if (af_ops->fill_link_af) { | |
1310 | struct nlattr *af; | |
1311 | int err; | |
1312 | ||
1313 | if (!(af = nla_nest_start(skb, af_ops->family))) | |
1314 | goto nla_put_failure; | |
1315 | ||
d5566fd7 | 1316 | err = af_ops->fill_link_af(skb, dev, ext_filter_mask); |
f8ff182c TG |
1317 | |
1318 | /* | |
1319 | * Caller may return ENODATA to indicate that there | |
1320 | * was no data to be dumped. This is not an error, it | |
1321 | * means we should trim the attribute header and | |
1322 | * continue. | |
1323 | */ | |
1324 | if (err == -ENODATA) | |
1325 | nla_nest_cancel(skb, af); | |
1326 | else if (err < 0) | |
1327 | goto nla_put_failure; | |
1328 | ||
1329 | nla_nest_end(skb, af); | |
1330 | } | |
1331 | } | |
1332 | ||
1333 | nla_nest_end(skb, af_spec); | |
1334 | ||
053c095a JB |
1335 | nlmsg_end(skb, nlh); |
1336 | return 0; | |
b60c5115 TG |
1337 | |
1338 | nla_put_failure: | |
26932566 PM |
1339 | nlmsg_cancel(skb, nlh); |
1340 | return -EMSGSIZE; | |
1da177e4 LT |
1341 | } |
1342 | ||
f7b12606 | 1343 | static const struct nla_policy ifla_policy[IFLA_MAX+1] = { |
5176f91e | 1344 | [IFLA_IFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ-1 }, |
38f7b870 PM |
1345 | [IFLA_ADDRESS] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN }, |
1346 | [IFLA_BROADCAST] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN }, | |
5176f91e | 1347 | [IFLA_MAP] = { .len = sizeof(struct rtnl_link_ifmap) }, |
da5e0494 | 1348 | [IFLA_MTU] = { .type = NLA_U32 }, |
76e87306 | 1349 | [IFLA_LINK] = { .type = NLA_U32 }, |
fbaec0ea | 1350 | [IFLA_MASTER] = { .type = NLA_U32 }, |
9a57247f | 1351 | [IFLA_CARRIER] = { .type = NLA_U8 }, |
da5e0494 TG |
1352 | [IFLA_TXQLEN] = { .type = NLA_U32 }, |
1353 | [IFLA_WEIGHT] = { .type = NLA_U32 }, | |
1354 | [IFLA_OPERSTATE] = { .type = NLA_U8 }, | |
1355 | [IFLA_LINKMODE] = { .type = NLA_U8 }, | |
76e87306 | 1356 | [IFLA_LINKINFO] = { .type = NLA_NESTED }, |
d8a5ec67 | 1357 | [IFLA_NET_NS_PID] = { .type = NLA_U32 }, |
f0630529 | 1358 | [IFLA_NET_NS_FD] = { .type = NLA_U32 }, |
0b815a1a | 1359 | [IFLA_IFALIAS] = { .type = NLA_STRING, .len = IFALIASZ-1 }, |
c02db8c6 | 1360 | [IFLA_VFINFO_LIST] = {. type = NLA_NESTED }, |
57b61080 SF |
1361 | [IFLA_VF_PORTS] = { .type = NLA_NESTED }, |
1362 | [IFLA_PORT_SELF] = { .type = NLA_NESTED }, | |
f8ff182c | 1363 | [IFLA_AF_SPEC] = { .type = NLA_NESTED }, |
115c9b81 | 1364 | [IFLA_EXT_MASK] = { .type = NLA_U32 }, |
edbc0bb3 | 1365 | [IFLA_PROMISCUITY] = { .type = NLA_U32 }, |
76ff5cc9 JP |
1366 | [IFLA_NUM_TX_QUEUES] = { .type = NLA_U32 }, |
1367 | [IFLA_NUM_RX_QUEUES] = { .type = NLA_U32 }, | |
02637fce | 1368 | [IFLA_PHYS_PORT_ID] = { .type = NLA_BINARY, .len = MAX_PHYS_ITEM_ID_LEN }, |
2d3b479d | 1369 | [IFLA_CARRIER_CHANGES] = { .type = NLA_U32 }, /* ignored */ |
82f28412 | 1370 | [IFLA_PHYS_SWITCH_ID] = { .type = NLA_BINARY, .len = MAX_PHYS_ITEM_ID_LEN }, |
317f4810 | 1371 | [IFLA_LINK_NETNSID] = { .type = NLA_S32 }, |
88d6378b | 1372 | [IFLA_PROTO_DOWN] = { .type = NLA_U8 }, |
da5e0494 TG |
1373 | }; |
1374 | ||
38f7b870 PM |
1375 | static const struct nla_policy ifla_info_policy[IFLA_INFO_MAX+1] = { |
1376 | [IFLA_INFO_KIND] = { .type = NLA_STRING }, | |
1377 | [IFLA_INFO_DATA] = { .type = NLA_NESTED }, | |
ba7d49b1 JP |
1378 | [IFLA_INFO_SLAVE_KIND] = { .type = NLA_STRING }, |
1379 | [IFLA_INFO_SLAVE_DATA] = { .type = NLA_NESTED }, | |
38f7b870 PM |
1380 | }; |
1381 | ||
c02db8c6 | 1382 | static const struct nla_policy ifla_vf_policy[IFLA_VF_MAX+1] = { |
364d5716 DB |
1383 | [IFLA_VF_MAC] = { .len = sizeof(struct ifla_vf_mac) }, |
1384 | [IFLA_VF_VLAN] = { .len = sizeof(struct ifla_vf_vlan) }, | |
1385 | [IFLA_VF_TX_RATE] = { .len = sizeof(struct ifla_vf_tx_rate) }, | |
1386 | [IFLA_VF_SPOOFCHK] = { .len = sizeof(struct ifla_vf_spoofchk) }, | |
1387 | [IFLA_VF_RATE] = { .len = sizeof(struct ifla_vf_rate) }, | |
1388 | [IFLA_VF_LINK_STATE] = { .len = sizeof(struct ifla_vf_link_state) }, | |
01a3d796 | 1389 | [IFLA_VF_RSS_QUERY_EN] = { .len = sizeof(struct ifla_vf_rss_query_en) }, |
3b766cd8 | 1390 | [IFLA_VF_STATS] = { .type = NLA_NESTED }, |
dd461d6a | 1391 | [IFLA_VF_TRUST] = { .len = sizeof(struct ifla_vf_trust) }, |
cc8e27cc EC |
1392 | [IFLA_VF_IB_NODE_GUID] = { .len = sizeof(struct ifla_vf_guid) }, |
1393 | [IFLA_VF_IB_PORT_GUID] = { .len = sizeof(struct ifla_vf_guid) }, | |
3b766cd8 EBE |
1394 | }; |
1395 | ||
57b61080 SF |
1396 | static const struct nla_policy ifla_port_policy[IFLA_PORT_MAX+1] = { |
1397 | [IFLA_PORT_VF] = { .type = NLA_U32 }, | |
1398 | [IFLA_PORT_PROFILE] = { .type = NLA_STRING, | |
1399 | .len = PORT_PROFILE_MAX }, | |
1400 | [IFLA_PORT_VSI_TYPE] = { .type = NLA_BINARY, | |
1401 | .len = sizeof(struct ifla_port_vsi)}, | |
1402 | [IFLA_PORT_INSTANCE_UUID] = { .type = NLA_BINARY, | |
1403 | .len = PORT_UUID_MAX }, | |
1404 | [IFLA_PORT_HOST_UUID] = { .type = NLA_STRING, | |
1405 | .len = PORT_UUID_MAX }, | |
1406 | [IFLA_PORT_REQUEST] = { .type = NLA_U8, }, | |
1407 | [IFLA_PORT_RESPONSE] = { .type = NLA_U16, }, | |
1408 | }; | |
1409 | ||
dc599f76 DA |
1410 | static const struct rtnl_link_ops *linkinfo_to_kind_ops(const struct nlattr *nla) |
1411 | { | |
1412 | const struct rtnl_link_ops *ops = NULL; | |
1413 | struct nlattr *linfo[IFLA_INFO_MAX + 1]; | |
1414 | ||
1415 | if (nla_parse_nested(linfo, IFLA_INFO_MAX, nla, ifla_info_policy) < 0) | |
1416 | return NULL; | |
1417 | ||
1418 | if (linfo[IFLA_INFO_KIND]) { | |
1419 | char kind[MODULE_NAME_LEN]; | |
1420 | ||
1421 | nla_strlcpy(kind, linfo[IFLA_INFO_KIND], sizeof(kind)); | |
1422 | ops = rtnl_link_ops_get(kind); | |
1423 | } | |
1424 | ||
1425 | return ops; | |
1426 | } | |
1427 | ||
1428 | static bool link_master_filtered(struct net_device *dev, int master_idx) | |
1429 | { | |
1430 | struct net_device *master; | |
1431 | ||
1432 | if (!master_idx) | |
1433 | return false; | |
1434 | ||
1435 | master = netdev_master_upper_dev_get(dev); | |
1436 | if (!master || master->ifindex != master_idx) | |
1437 | return true; | |
1438 | ||
1439 | return false; | |
1440 | } | |
1441 | ||
1442 | static bool link_kind_filtered(const struct net_device *dev, | |
1443 | const struct rtnl_link_ops *kind_ops) | |
1444 | { | |
1445 | if (kind_ops && dev->rtnl_link_ops != kind_ops) | |
1446 | return true; | |
1447 | ||
1448 | return false; | |
1449 | } | |
1450 | ||
1451 | static bool link_dump_filtered(struct net_device *dev, | |
1452 | int master_idx, | |
1453 | const struct rtnl_link_ops *kind_ops) | |
1454 | { | |
1455 | if (link_master_filtered(dev, master_idx) || | |
1456 | link_kind_filtered(dev, kind_ops)) | |
1457 | return true; | |
1458 | ||
1459 | return false; | |
1460 | } | |
1461 | ||
f7b12606 JP |
1462 | static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb) |
1463 | { | |
1464 | struct net *net = sock_net(skb->sk); | |
1465 | int h, s_h; | |
1466 | int idx = 0, s_idx; | |
1467 | struct net_device *dev; | |
1468 | struct hlist_head *head; | |
1469 | struct nlattr *tb[IFLA_MAX+1]; | |
1470 | u32 ext_filter_mask = 0; | |
dc599f76 DA |
1471 | const struct rtnl_link_ops *kind_ops = NULL; |
1472 | unsigned int flags = NLM_F_MULTI; | |
1473 | int master_idx = 0; | |
973462bb | 1474 | int err; |
e5eca6d4 | 1475 | int hdrlen; |
f7b12606 JP |
1476 | |
1477 | s_h = cb->args[0]; | |
1478 | s_idx = cb->args[1]; | |
1479 | ||
f7b12606 JP |
1480 | cb->seq = net->dev_base_seq; |
1481 | ||
e5eca6d4 MS |
1482 | /* A hack to preserve kernel<->userspace interface. |
1483 | * The correct header is ifinfomsg. It is consistent with rtnl_getlink. | |
1484 | * However, before Linux v3.9 the code here assumed rtgenmsg and that's | |
1485 | * what iproute2 < v3.9.0 used. | |
1486 | * We can detect the old iproute2. Even including the IFLA_EXT_MASK | |
1487 | * attribute, its netlink message is shorter than struct ifinfomsg. | |
1488 | */ | |
1489 | hdrlen = nlmsg_len(cb->nlh) < sizeof(struct ifinfomsg) ? | |
1490 | sizeof(struct rtgenmsg) : sizeof(struct ifinfomsg); | |
1491 | ||
1492 | if (nlmsg_parse(cb->nlh, hdrlen, tb, IFLA_MAX, ifla_policy) >= 0) { | |
f7b12606 JP |
1493 | |
1494 | if (tb[IFLA_EXT_MASK]) | |
1495 | ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]); | |
dc599f76 DA |
1496 | |
1497 | if (tb[IFLA_MASTER]) | |
1498 | master_idx = nla_get_u32(tb[IFLA_MASTER]); | |
1499 | ||
1500 | if (tb[IFLA_LINKINFO]) | |
1501 | kind_ops = linkinfo_to_kind_ops(tb[IFLA_LINKINFO]); | |
1502 | ||
1503 | if (master_idx || kind_ops) | |
1504 | flags |= NLM_F_DUMP_FILTERED; | |
f7b12606 JP |
1505 | } |
1506 | ||
1507 | for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) { | |
1508 | idx = 0; | |
1509 | head = &net->dev_index_head[h]; | |
cac5e65e | 1510 | hlist_for_each_entry(dev, head, index_hlist) { |
dc599f76 DA |
1511 | if (link_dump_filtered(dev, master_idx, kind_ops)) |
1512 | continue; | |
f7b12606 JP |
1513 | if (idx < s_idx) |
1514 | goto cont; | |
973462bb DG |
1515 | err = rtnl_fill_ifinfo(skb, dev, RTM_NEWLINK, |
1516 | NETLINK_CB(cb->skb).portid, | |
1517 | cb->nlh->nlmsg_seq, 0, | |
dc599f76 | 1518 | flags, |
973462bb DG |
1519 | ext_filter_mask); |
1520 | /* If we ran out of room on the first message, | |
1521 | * we're in trouble | |
1522 | */ | |
1523 | WARN_ON((err == -EMSGSIZE) && (skb->len == 0)); | |
1524 | ||
7b46a644 | 1525 | if (err < 0) |
f7b12606 JP |
1526 | goto out; |
1527 | ||
1528 | nl_dump_check_consistent(cb, nlmsg_hdr(skb)); | |
1529 | cont: | |
1530 | idx++; | |
1531 | } | |
1532 | } | |
1533 | out: | |
f7b12606 JP |
1534 | cb->args[1] = idx; |
1535 | cb->args[0] = h; | |
1536 | ||
1537 | return skb->len; | |
1538 | } | |
1539 | ||
1540 | int rtnl_nla_parse_ifla(struct nlattr **tb, const struct nlattr *head, int len) | |
1541 | { | |
1542 | return nla_parse(tb, IFLA_MAX, head, len, ifla_policy); | |
1543 | } | |
1544 | EXPORT_SYMBOL(rtnl_nla_parse_ifla); | |
1545 | ||
81adee47 EB |
1546 | struct net *rtnl_link_get_net(struct net *src_net, struct nlattr *tb[]) |
1547 | { | |
1548 | struct net *net; | |
1549 | /* Examine the link attributes and figure out which | |
1550 | * network namespace we are talking about. | |
1551 | */ | |
1552 | if (tb[IFLA_NET_NS_PID]) | |
1553 | net = get_net_ns_by_pid(nla_get_u32(tb[IFLA_NET_NS_PID])); | |
f0630529 EB |
1554 | else if (tb[IFLA_NET_NS_FD]) |
1555 | net = get_net_ns_by_fd(nla_get_u32(tb[IFLA_NET_NS_FD])); | |
81adee47 EB |
1556 | else |
1557 | net = get_net(src_net); | |
1558 | return net; | |
1559 | } | |
1560 | EXPORT_SYMBOL(rtnl_link_get_net); | |
1561 | ||
1840bb13 TG |
1562 | static int validate_linkmsg(struct net_device *dev, struct nlattr *tb[]) |
1563 | { | |
1564 | if (dev) { | |
1565 | if (tb[IFLA_ADDRESS] && | |
1566 | nla_len(tb[IFLA_ADDRESS]) < dev->addr_len) | |
1567 | return -EINVAL; | |
1568 | ||
1569 | if (tb[IFLA_BROADCAST] && | |
1570 | nla_len(tb[IFLA_BROADCAST]) < dev->addr_len) | |
1571 | return -EINVAL; | |
1572 | } | |
1573 | ||
cf7afbfe TG |
1574 | if (tb[IFLA_AF_SPEC]) { |
1575 | struct nlattr *af; | |
1576 | int rem, err; | |
1577 | ||
1578 | nla_for_each_nested(af, tb[IFLA_AF_SPEC], rem) { | |
1579 | const struct rtnl_af_ops *af_ops; | |
1580 | ||
1581 | if (!(af_ops = rtnl_af_lookup(nla_type(af)))) | |
1582 | return -EAFNOSUPPORT; | |
1583 | ||
1584 | if (!af_ops->set_link_af) | |
1585 | return -EOPNOTSUPP; | |
1586 | ||
1587 | if (af_ops->validate_link_af) { | |
6d3a9a68 | 1588 | err = af_ops->validate_link_af(dev, af); |
cf7afbfe TG |
1589 | if (err < 0) |
1590 | return err; | |
1591 | } | |
1592 | } | |
1593 | } | |
1594 | ||
1840bb13 TG |
1595 | return 0; |
1596 | } | |
1597 | ||
cc8e27cc EC |
1598 | static int handle_infiniband_guid(struct net_device *dev, struct ifla_vf_guid *ivt, |
1599 | int guid_type) | |
1600 | { | |
1601 | const struct net_device_ops *ops = dev->netdev_ops; | |
1602 | ||
1603 | return ops->ndo_set_vf_guid(dev, ivt->vf, ivt->guid, guid_type); | |
1604 | } | |
1605 | ||
1606 | static int handle_vf_guid(struct net_device *dev, struct ifla_vf_guid *ivt, int guid_type) | |
1607 | { | |
1608 | if (dev->type != ARPHRD_INFINIBAND) | |
1609 | return -EOPNOTSUPP; | |
1610 | ||
1611 | return handle_infiniband_guid(dev, ivt, guid_type); | |
1612 | } | |
1613 | ||
4f7d2cdf | 1614 | static int do_setvfinfo(struct net_device *dev, struct nlattr **tb) |
c02db8c6 | 1615 | { |
c02db8c6 | 1616 | const struct net_device_ops *ops = dev->netdev_ops; |
4f7d2cdf | 1617 | int err = -EINVAL; |
c02db8c6 | 1618 | |
4f7d2cdf DB |
1619 | if (tb[IFLA_VF_MAC]) { |
1620 | struct ifla_vf_mac *ivm = nla_data(tb[IFLA_VF_MAC]); | |
01a3d796 | 1621 | |
4f7d2cdf DB |
1622 | err = -EOPNOTSUPP; |
1623 | if (ops->ndo_set_vf_mac) | |
1624 | err = ops->ndo_set_vf_mac(dev, ivm->vf, | |
1625 | ivm->mac); | |
1626 | if (err < 0) | |
1627 | return err; | |
1628 | } | |
1629 | ||
1630 | if (tb[IFLA_VF_VLAN]) { | |
1631 | struct ifla_vf_vlan *ivv = nla_data(tb[IFLA_VF_VLAN]); | |
1632 | ||
1633 | err = -EOPNOTSUPP; | |
1634 | if (ops->ndo_set_vf_vlan) | |
1635 | err = ops->ndo_set_vf_vlan(dev, ivv->vf, ivv->vlan, | |
1636 | ivv->qos); | |
1637 | if (err < 0) | |
1638 | return err; | |
c02db8c6 | 1639 | } |
4f7d2cdf DB |
1640 | |
1641 | if (tb[IFLA_VF_TX_RATE]) { | |
1642 | struct ifla_vf_tx_rate *ivt = nla_data(tb[IFLA_VF_TX_RATE]); | |
1643 | struct ifla_vf_info ivf; | |
1644 | ||
1645 | err = -EOPNOTSUPP; | |
1646 | if (ops->ndo_get_vf_config) | |
1647 | err = ops->ndo_get_vf_config(dev, ivt->vf, &ivf); | |
1648 | if (err < 0) | |
1649 | return err; | |
1650 | ||
1651 | err = -EOPNOTSUPP; | |
1652 | if (ops->ndo_set_vf_rate) | |
1653 | err = ops->ndo_set_vf_rate(dev, ivt->vf, | |
1654 | ivf.min_tx_rate, | |
1655 | ivt->rate); | |
1656 | if (err < 0) | |
1657 | return err; | |
1658 | } | |
1659 | ||
1660 | if (tb[IFLA_VF_RATE]) { | |
1661 | struct ifla_vf_rate *ivt = nla_data(tb[IFLA_VF_RATE]); | |
1662 | ||
1663 | err = -EOPNOTSUPP; | |
1664 | if (ops->ndo_set_vf_rate) | |
1665 | err = ops->ndo_set_vf_rate(dev, ivt->vf, | |
1666 | ivt->min_tx_rate, | |
1667 | ivt->max_tx_rate); | |
1668 | if (err < 0) | |
1669 | return err; | |
1670 | } | |
1671 | ||
1672 | if (tb[IFLA_VF_SPOOFCHK]) { | |
1673 | struct ifla_vf_spoofchk *ivs = nla_data(tb[IFLA_VF_SPOOFCHK]); | |
1674 | ||
1675 | err = -EOPNOTSUPP; | |
1676 | if (ops->ndo_set_vf_spoofchk) | |
1677 | err = ops->ndo_set_vf_spoofchk(dev, ivs->vf, | |
1678 | ivs->setting); | |
1679 | if (err < 0) | |
1680 | return err; | |
1681 | } | |
1682 | ||
1683 | if (tb[IFLA_VF_LINK_STATE]) { | |
1684 | struct ifla_vf_link_state *ivl = nla_data(tb[IFLA_VF_LINK_STATE]); | |
1685 | ||
1686 | err = -EOPNOTSUPP; | |
1687 | if (ops->ndo_set_vf_link_state) | |
1688 | err = ops->ndo_set_vf_link_state(dev, ivl->vf, | |
1689 | ivl->link_state); | |
1690 | if (err < 0) | |
1691 | return err; | |
1692 | } | |
1693 | ||
1694 | if (tb[IFLA_VF_RSS_QUERY_EN]) { | |
1695 | struct ifla_vf_rss_query_en *ivrssq_en; | |
1696 | ||
1697 | err = -EOPNOTSUPP; | |
1698 | ivrssq_en = nla_data(tb[IFLA_VF_RSS_QUERY_EN]); | |
1699 | if (ops->ndo_set_vf_rss_query_en) | |
1700 | err = ops->ndo_set_vf_rss_query_en(dev, ivrssq_en->vf, | |
1701 | ivrssq_en->setting); | |
1702 | if (err < 0) | |
1703 | return err; | |
1704 | } | |
1705 | ||
dd461d6a HS |
1706 | if (tb[IFLA_VF_TRUST]) { |
1707 | struct ifla_vf_trust *ivt = nla_data(tb[IFLA_VF_TRUST]); | |
1708 | ||
1709 | err = -EOPNOTSUPP; | |
1710 | if (ops->ndo_set_vf_trust) | |
1711 | err = ops->ndo_set_vf_trust(dev, ivt->vf, ivt->setting); | |
1712 | if (err < 0) | |
1713 | return err; | |
1714 | } | |
1715 | ||
cc8e27cc EC |
1716 | if (tb[IFLA_VF_IB_NODE_GUID]) { |
1717 | struct ifla_vf_guid *ivt = nla_data(tb[IFLA_VF_IB_NODE_GUID]); | |
1718 | ||
1719 | if (!ops->ndo_set_vf_guid) | |
1720 | return -EOPNOTSUPP; | |
1721 | ||
1722 | return handle_vf_guid(dev, ivt, IFLA_VF_IB_NODE_GUID); | |
1723 | } | |
1724 | ||
1725 | if (tb[IFLA_VF_IB_PORT_GUID]) { | |
1726 | struct ifla_vf_guid *ivt = nla_data(tb[IFLA_VF_IB_PORT_GUID]); | |
1727 | ||
1728 | if (!ops->ndo_set_vf_guid) | |
1729 | return -EOPNOTSUPP; | |
1730 | ||
1731 | return handle_vf_guid(dev, ivt, IFLA_VF_IB_PORT_GUID); | |
1732 | } | |
1733 | ||
c02db8c6 CW |
1734 | return err; |
1735 | } | |
1736 | ||
fbaec0ea JP |
1737 | static int do_set_master(struct net_device *dev, int ifindex) |
1738 | { | |
898e5061 | 1739 | struct net_device *upper_dev = netdev_master_upper_dev_get(dev); |
fbaec0ea JP |
1740 | const struct net_device_ops *ops; |
1741 | int err; | |
1742 | ||
898e5061 JP |
1743 | if (upper_dev) { |
1744 | if (upper_dev->ifindex == ifindex) | |
fbaec0ea | 1745 | return 0; |
898e5061 | 1746 | ops = upper_dev->netdev_ops; |
fbaec0ea | 1747 | if (ops->ndo_del_slave) { |
898e5061 | 1748 | err = ops->ndo_del_slave(upper_dev, dev); |
fbaec0ea JP |
1749 | if (err) |
1750 | return err; | |
1751 | } else { | |
1752 | return -EOPNOTSUPP; | |
1753 | } | |
1754 | } | |
1755 | ||
1756 | if (ifindex) { | |
898e5061 JP |
1757 | upper_dev = __dev_get_by_index(dev_net(dev), ifindex); |
1758 | if (!upper_dev) | |
fbaec0ea | 1759 | return -EINVAL; |
898e5061 | 1760 | ops = upper_dev->netdev_ops; |
fbaec0ea | 1761 | if (ops->ndo_add_slave) { |
898e5061 | 1762 | err = ops->ndo_add_slave(upper_dev, dev); |
fbaec0ea JP |
1763 | if (err) |
1764 | return err; | |
1765 | } else { | |
1766 | return -EOPNOTSUPP; | |
1767 | } | |
1768 | } | |
1769 | return 0; | |
1770 | } | |
1771 | ||
90c325e3 | 1772 | #define DO_SETLINK_MODIFIED 0x01 |
ba998906 ND |
1773 | /* notify flag means notify + modified. */ |
1774 | #define DO_SETLINK_NOTIFY 0x03 | |
90f62cf3 EB |
1775 | static int do_setlink(const struct sk_buff *skb, |
1776 | struct net_device *dev, struct ifinfomsg *ifm, | |
90c325e3 | 1777 | struct nlattr **tb, char *ifname, int status) |
1da177e4 | 1778 | { |
d314774c | 1779 | const struct net_device_ops *ops = dev->netdev_ops; |
0157f60c | 1780 | int err; |
1da177e4 | 1781 | |
f0630529 | 1782 | if (tb[IFLA_NET_NS_PID] || tb[IFLA_NET_NS_FD]) { |
81adee47 | 1783 | struct net *net = rtnl_link_get_net(dev_net(dev), tb); |
d8a5ec67 EB |
1784 | if (IS_ERR(net)) { |
1785 | err = PTR_ERR(net); | |
1786 | goto errout; | |
1787 | } | |
90f62cf3 | 1788 | if (!netlink_ns_capable(skb, net->user_ns, CAP_NET_ADMIN)) { |
e0ebde0e | 1789 | put_net(net); |
b51642f6 EB |
1790 | err = -EPERM; |
1791 | goto errout; | |
1792 | } | |
d8a5ec67 EB |
1793 | err = dev_change_net_namespace(dev, net, ifname); |
1794 | put_net(net); | |
1795 | if (err) | |
1796 | goto errout; | |
90c325e3 | 1797 | status |= DO_SETLINK_MODIFIED; |
d8a5ec67 EB |
1798 | } |
1799 | ||
da5e0494 | 1800 | if (tb[IFLA_MAP]) { |
1da177e4 LT |
1801 | struct rtnl_link_ifmap *u_map; |
1802 | struct ifmap k_map; | |
1803 | ||
d314774c | 1804 | if (!ops->ndo_set_config) { |
1da177e4 | 1805 | err = -EOPNOTSUPP; |
0157f60c | 1806 | goto errout; |
1da177e4 LT |
1807 | } |
1808 | ||
1809 | if (!netif_device_present(dev)) { | |
1810 | err = -ENODEV; | |
0157f60c | 1811 | goto errout; |
1da177e4 | 1812 | } |
1da177e4 | 1813 | |
da5e0494 | 1814 | u_map = nla_data(tb[IFLA_MAP]); |
1da177e4 LT |
1815 | k_map.mem_start = (unsigned long) u_map->mem_start; |
1816 | k_map.mem_end = (unsigned long) u_map->mem_end; | |
1817 | k_map.base_addr = (unsigned short) u_map->base_addr; | |
1818 | k_map.irq = (unsigned char) u_map->irq; | |
1819 | k_map.dma = (unsigned char) u_map->dma; | |
1820 | k_map.port = (unsigned char) u_map->port; | |
1821 | ||
d314774c | 1822 | err = ops->ndo_set_config(dev, &k_map); |
da5e0494 | 1823 | if (err < 0) |
0157f60c | 1824 | goto errout; |
1da177e4 | 1825 | |
ba998906 | 1826 | status |= DO_SETLINK_NOTIFY; |
1da177e4 LT |
1827 | } |
1828 | ||
da5e0494 | 1829 | if (tb[IFLA_ADDRESS]) { |
70f8e78e DM |
1830 | struct sockaddr *sa; |
1831 | int len; | |
1832 | ||
70f8e78e DM |
1833 | len = sizeof(sa_family_t) + dev->addr_len; |
1834 | sa = kmalloc(len, GFP_KERNEL); | |
1835 | if (!sa) { | |
1836 | err = -ENOMEM; | |
0157f60c | 1837 | goto errout; |
70f8e78e DM |
1838 | } |
1839 | sa->sa_family = dev->type; | |
da5e0494 | 1840 | memcpy(sa->sa_data, nla_data(tb[IFLA_ADDRESS]), |
70f8e78e | 1841 | dev->addr_len); |
e7c3273e | 1842 | err = dev_set_mac_address(dev, sa); |
70f8e78e | 1843 | kfree(sa); |
1da177e4 | 1844 | if (err) |
0157f60c | 1845 | goto errout; |
90c325e3 | 1846 | status |= DO_SETLINK_MODIFIED; |
1da177e4 LT |
1847 | } |
1848 | ||
da5e0494 TG |
1849 | if (tb[IFLA_MTU]) { |
1850 | err = dev_set_mtu(dev, nla_get_u32(tb[IFLA_MTU])); | |
1851 | if (err < 0) | |
0157f60c | 1852 | goto errout; |
90c325e3 | 1853 | status |= DO_SETLINK_MODIFIED; |
1da177e4 LT |
1854 | } |
1855 | ||
cbda10fa VD |
1856 | if (tb[IFLA_GROUP]) { |
1857 | dev_set_group(dev, nla_get_u32(tb[IFLA_GROUP])); | |
ba998906 | 1858 | status |= DO_SETLINK_NOTIFY; |
cbda10fa VD |
1859 | } |
1860 | ||
da5e0494 TG |
1861 | /* |
1862 | * Interface selected by interface index but interface | |
1863 | * name provided implies that a name change has been | |
1864 | * requested. | |
1865 | */ | |
51055be8 | 1866 | if (ifm->ifi_index > 0 && ifname[0]) { |
da5e0494 TG |
1867 | err = dev_change_name(dev, ifname); |
1868 | if (err < 0) | |
0157f60c | 1869 | goto errout; |
90c325e3 | 1870 | status |= DO_SETLINK_MODIFIED; |
1da177e4 LT |
1871 | } |
1872 | ||
0b815a1a SH |
1873 | if (tb[IFLA_IFALIAS]) { |
1874 | err = dev_set_alias(dev, nla_data(tb[IFLA_IFALIAS]), | |
1875 | nla_len(tb[IFLA_IFALIAS])); | |
1876 | if (err < 0) | |
1877 | goto errout; | |
ba998906 | 1878 | status |= DO_SETLINK_NOTIFY; |
0b815a1a SH |
1879 | } |
1880 | ||
da5e0494 TG |
1881 | if (tb[IFLA_BROADCAST]) { |
1882 | nla_memcpy(dev->broadcast, tb[IFLA_BROADCAST], dev->addr_len); | |
e7c3273e | 1883 | call_netdevice_notifiers(NETDEV_CHANGEADDR, dev); |
1da177e4 LT |
1884 | } |
1885 | ||
83b496e9 | 1886 | if (ifm->ifi_flags || ifm->ifi_change) { |
3729d502 | 1887 | err = dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm)); |
5f9021cf JB |
1888 | if (err < 0) |
1889 | goto errout; | |
83b496e9 | 1890 | } |
1da177e4 | 1891 | |
fbaec0ea JP |
1892 | if (tb[IFLA_MASTER]) { |
1893 | err = do_set_master(dev, nla_get_u32(tb[IFLA_MASTER])); | |
1894 | if (err) | |
1895 | goto errout; | |
90c325e3 | 1896 | status |= DO_SETLINK_MODIFIED; |
fbaec0ea JP |
1897 | } |
1898 | ||
9a57247f JP |
1899 | if (tb[IFLA_CARRIER]) { |
1900 | err = dev_change_carrier(dev, nla_get_u8(tb[IFLA_CARRIER])); | |
1901 | if (err) | |
1902 | goto errout; | |
90c325e3 | 1903 | status |= DO_SETLINK_MODIFIED; |
9a57247f JP |
1904 | } |
1905 | ||
5d1180fc ND |
1906 | if (tb[IFLA_TXQLEN]) { |
1907 | unsigned long value = nla_get_u32(tb[IFLA_TXQLEN]); | |
1908 | ||
1909 | if (dev->tx_queue_len ^ value) | |
ba998906 | 1910 | status |= DO_SETLINK_NOTIFY; |
5d1180fc ND |
1911 | |
1912 | dev->tx_queue_len = value; | |
1913 | } | |
b00055aa | 1914 | |
da5e0494 | 1915 | if (tb[IFLA_OPERSTATE]) |
93b2d4a2 | 1916 | set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE])); |
b00055aa | 1917 | |
da5e0494 | 1918 | if (tb[IFLA_LINKMODE]) { |
1889b0e7 ND |
1919 | unsigned char value = nla_get_u8(tb[IFLA_LINKMODE]); |
1920 | ||
93b2d4a2 | 1921 | write_lock_bh(&dev_base_lock); |
1889b0e7 | 1922 | if (dev->link_mode ^ value) |
ba998906 | 1923 | status |= DO_SETLINK_NOTIFY; |
1889b0e7 | 1924 | dev->link_mode = value; |
93b2d4a2 | 1925 | write_unlock_bh(&dev_base_lock); |
b00055aa SR |
1926 | } |
1927 | ||
c02db8c6 | 1928 | if (tb[IFLA_VFINFO_LIST]) { |
4f7d2cdf | 1929 | struct nlattr *vfinfo[IFLA_VF_MAX + 1]; |
c02db8c6 CW |
1930 | struct nlattr *attr; |
1931 | int rem; | |
4f7d2cdf | 1932 | |
c02db8c6 | 1933 | nla_for_each_nested(attr, tb[IFLA_VFINFO_LIST], rem) { |
4f7d2cdf DB |
1934 | if (nla_type(attr) != IFLA_VF_INFO || |
1935 | nla_len(attr) < NLA_HDRLEN) { | |
253683bb | 1936 | err = -EINVAL; |
c02db8c6 | 1937 | goto errout; |
253683bb | 1938 | } |
4f7d2cdf DB |
1939 | err = nla_parse_nested(vfinfo, IFLA_VF_MAX, attr, |
1940 | ifla_vf_policy); | |
1941 | if (err < 0) | |
1942 | goto errout; | |
1943 | err = do_setvfinfo(dev, vfinfo); | |
c02db8c6 CW |
1944 | if (err < 0) |
1945 | goto errout; | |
ba998906 | 1946 | status |= DO_SETLINK_NOTIFY; |
c02db8c6 | 1947 | } |
ebc08a6f | 1948 | } |
1da177e4 LT |
1949 | err = 0; |
1950 | ||
57b61080 SF |
1951 | if (tb[IFLA_VF_PORTS]) { |
1952 | struct nlattr *port[IFLA_PORT_MAX+1]; | |
1953 | struct nlattr *attr; | |
1954 | int vf; | |
1955 | int rem; | |
1956 | ||
1957 | err = -EOPNOTSUPP; | |
1958 | if (!ops->ndo_set_vf_port) | |
1959 | goto errout; | |
1960 | ||
1961 | nla_for_each_nested(attr, tb[IFLA_VF_PORTS], rem) { | |
035d210f DB |
1962 | if (nla_type(attr) != IFLA_VF_PORT || |
1963 | nla_len(attr) < NLA_HDRLEN) { | |
1964 | err = -EINVAL; | |
1965 | goto errout; | |
1966 | } | |
1967 | err = nla_parse_nested(port, IFLA_PORT_MAX, attr, | |
1968 | ifla_port_policy); | |
57b61080 SF |
1969 | if (err < 0) |
1970 | goto errout; | |
1971 | if (!port[IFLA_PORT_VF]) { | |
1972 | err = -EOPNOTSUPP; | |
1973 | goto errout; | |
1974 | } | |
1975 | vf = nla_get_u32(port[IFLA_PORT_VF]); | |
1976 | err = ops->ndo_set_vf_port(dev, vf, port); | |
1977 | if (err < 0) | |
1978 | goto errout; | |
ba998906 | 1979 | status |= DO_SETLINK_NOTIFY; |
57b61080 SF |
1980 | } |
1981 | } | |
1982 | err = 0; | |
1983 | ||
1984 | if (tb[IFLA_PORT_SELF]) { | |
1985 | struct nlattr *port[IFLA_PORT_MAX+1]; | |
1986 | ||
1987 | err = nla_parse_nested(port, IFLA_PORT_MAX, | |
1988 | tb[IFLA_PORT_SELF], ifla_port_policy); | |
1989 | if (err < 0) | |
1990 | goto errout; | |
1991 | ||
1992 | err = -EOPNOTSUPP; | |
1993 | if (ops->ndo_set_vf_port) | |
1994 | err = ops->ndo_set_vf_port(dev, PORT_SELF_VF, port); | |
1995 | if (err < 0) | |
1996 | goto errout; | |
ba998906 | 1997 | status |= DO_SETLINK_NOTIFY; |
57b61080 | 1998 | } |
f8ff182c TG |
1999 | |
2000 | if (tb[IFLA_AF_SPEC]) { | |
2001 | struct nlattr *af; | |
2002 | int rem; | |
2003 | ||
2004 | nla_for_each_nested(af, tb[IFLA_AF_SPEC], rem) { | |
2005 | const struct rtnl_af_ops *af_ops; | |
2006 | ||
2007 | if (!(af_ops = rtnl_af_lookup(nla_type(af)))) | |
cf7afbfe | 2008 | BUG(); |
f8ff182c | 2009 | |
cf7afbfe | 2010 | err = af_ops->set_link_af(dev, af); |
f8ff182c TG |
2011 | if (err < 0) |
2012 | goto errout; | |
2013 | ||
ba998906 | 2014 | status |= DO_SETLINK_NOTIFY; |
f8ff182c TG |
2015 | } |
2016 | } | |
57b61080 SF |
2017 | err = 0; |
2018 | ||
88d6378b AK |
2019 | if (tb[IFLA_PROTO_DOWN]) { |
2020 | err = dev_change_proto_down(dev, | |
2021 | nla_get_u8(tb[IFLA_PROTO_DOWN])); | |
2022 | if (err) | |
2023 | goto errout; | |
2024 | status |= DO_SETLINK_NOTIFY; | |
2025 | } | |
2026 | ||
0157f60c | 2027 | errout: |
ba998906 ND |
2028 | if (status & DO_SETLINK_MODIFIED) { |
2029 | if (status & DO_SETLINK_NOTIFY) | |
2030 | netdev_state_change(dev); | |
2031 | ||
2032 | if (err < 0) | |
2033 | 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", | |
2034 | dev->name); | |
2035 | } | |
da5e0494 | 2036 | |
0157f60c PM |
2037 | return err; |
2038 | } | |
1da177e4 | 2039 | |
661d2967 | 2040 | static int rtnl_setlink(struct sk_buff *skb, struct nlmsghdr *nlh) |
0157f60c | 2041 | { |
3b1e0a65 | 2042 | struct net *net = sock_net(skb->sk); |
0157f60c PM |
2043 | struct ifinfomsg *ifm; |
2044 | struct net_device *dev; | |
2045 | int err; | |
2046 | struct nlattr *tb[IFLA_MAX+1]; | |
2047 | char ifname[IFNAMSIZ]; | |
2048 | ||
2049 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); | |
2050 | if (err < 0) | |
2051 | goto errout; | |
2052 | ||
2053 | if (tb[IFLA_IFNAME]) | |
2054 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
2055 | else | |
2056 | ifname[0] = '\0'; | |
2057 | ||
2058 | err = -EINVAL; | |
2059 | ifm = nlmsg_data(nlh); | |
2060 | if (ifm->ifi_index > 0) | |
a3d12891 | 2061 | dev = __dev_get_by_index(net, ifm->ifi_index); |
0157f60c | 2062 | else if (tb[IFLA_IFNAME]) |
a3d12891 | 2063 | dev = __dev_get_by_name(net, ifname); |
0157f60c PM |
2064 | else |
2065 | goto errout; | |
2066 | ||
2067 | if (dev == NULL) { | |
2068 | err = -ENODEV; | |
2069 | goto errout; | |
2070 | } | |
2071 | ||
e0d087af ED |
2072 | err = validate_linkmsg(dev, tb); |
2073 | if (err < 0) | |
a3d12891 | 2074 | goto errout; |
0157f60c | 2075 | |
90f62cf3 | 2076 | err = do_setlink(skb, dev, ifm, tb, ifname, 0); |
da5e0494 | 2077 | errout: |
1da177e4 LT |
2078 | return err; |
2079 | } | |
2080 | ||
66400d54 WC |
2081 | static int rtnl_group_dellink(const struct net *net, int group) |
2082 | { | |
2083 | struct net_device *dev, *aux; | |
2084 | LIST_HEAD(list_kill); | |
2085 | bool found = false; | |
2086 | ||
2087 | if (!group) | |
2088 | return -EPERM; | |
2089 | ||
2090 | for_each_netdev(net, dev) { | |
2091 | if (dev->group == group) { | |
2092 | const struct rtnl_link_ops *ops; | |
2093 | ||
2094 | found = true; | |
2095 | ops = dev->rtnl_link_ops; | |
2096 | if (!ops || !ops->dellink) | |
2097 | return -EOPNOTSUPP; | |
2098 | } | |
2099 | } | |
2100 | ||
2101 | if (!found) | |
2102 | return -ENODEV; | |
2103 | ||
2104 | for_each_netdev_safe(net, dev, aux) { | |
2105 | if (dev->group == group) { | |
2106 | const struct rtnl_link_ops *ops; | |
2107 | ||
2108 | ops = dev->rtnl_link_ops; | |
2109 | ops->dellink(dev, &list_kill); | |
2110 | } | |
2111 | } | |
2112 | unregister_netdevice_many(&list_kill); | |
2113 | ||
2114 | return 0; | |
2115 | } | |
2116 | ||
614732ea TG |
2117 | int rtnl_delete_link(struct net_device *dev) |
2118 | { | |
2119 | const struct rtnl_link_ops *ops; | |
2120 | LIST_HEAD(list_kill); | |
2121 | ||
2122 | ops = dev->rtnl_link_ops; | |
2123 | if (!ops || !ops->dellink) | |
2124 | return -EOPNOTSUPP; | |
2125 | ||
2126 | ops->dellink(dev, &list_kill); | |
2127 | unregister_netdevice_many(&list_kill); | |
2128 | ||
2129 | return 0; | |
2130 | } | |
2131 | EXPORT_SYMBOL_GPL(rtnl_delete_link); | |
2132 | ||
661d2967 | 2133 | static int rtnl_dellink(struct sk_buff *skb, struct nlmsghdr *nlh) |
38f7b870 | 2134 | { |
3b1e0a65 | 2135 | struct net *net = sock_net(skb->sk); |
38f7b870 PM |
2136 | struct net_device *dev; |
2137 | struct ifinfomsg *ifm; | |
2138 | char ifname[IFNAMSIZ]; | |
2139 | struct nlattr *tb[IFLA_MAX+1]; | |
2140 | int err; | |
2141 | ||
2142 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); | |
2143 | if (err < 0) | |
2144 | return err; | |
2145 | ||
2146 | if (tb[IFLA_IFNAME]) | |
2147 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
2148 | ||
2149 | ifm = nlmsg_data(nlh); | |
2150 | if (ifm->ifi_index > 0) | |
881d966b | 2151 | dev = __dev_get_by_index(net, ifm->ifi_index); |
38f7b870 | 2152 | else if (tb[IFLA_IFNAME]) |
881d966b | 2153 | dev = __dev_get_by_name(net, ifname); |
66400d54 WC |
2154 | else if (tb[IFLA_GROUP]) |
2155 | return rtnl_group_dellink(net, nla_get_u32(tb[IFLA_GROUP])); | |
38f7b870 PM |
2156 | else |
2157 | return -EINVAL; | |
2158 | ||
2159 | if (!dev) | |
2160 | return -ENODEV; | |
2161 | ||
614732ea | 2162 | return rtnl_delete_link(dev); |
38f7b870 PM |
2163 | } |
2164 | ||
3729d502 PM |
2165 | int rtnl_configure_link(struct net_device *dev, const struct ifinfomsg *ifm) |
2166 | { | |
2167 | unsigned int old_flags; | |
2168 | int err; | |
2169 | ||
2170 | old_flags = dev->flags; | |
2171 | if (ifm && (ifm->ifi_flags || ifm->ifi_change)) { | |
2172 | err = __dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm)); | |
2173 | if (err < 0) | |
2174 | return err; | |
2175 | } | |
2176 | ||
2177 | dev->rtnl_link_state = RTNL_LINK_INITIALIZED; | |
3729d502 | 2178 | |
a528c219 | 2179 | __dev_notify_flags(dev, old_flags, ~0U); |
3729d502 PM |
2180 | return 0; |
2181 | } | |
2182 | EXPORT_SYMBOL(rtnl_configure_link); | |
2183 | ||
c0713563 | 2184 | struct net_device *rtnl_create_link(struct net *net, |
78ebb0d0 | 2185 | const char *ifname, unsigned char name_assign_type, |
5517750f | 2186 | const struct rtnl_link_ops *ops, struct nlattr *tb[]) |
e7199288 PE |
2187 | { |
2188 | int err; | |
2189 | struct net_device *dev; | |
d40156aa JP |
2190 | unsigned int num_tx_queues = 1; |
2191 | unsigned int num_rx_queues = 1; | |
e7199288 | 2192 | |
76ff5cc9 JP |
2193 | if (tb[IFLA_NUM_TX_QUEUES]) |
2194 | num_tx_queues = nla_get_u32(tb[IFLA_NUM_TX_QUEUES]); | |
2195 | else if (ops->get_num_tx_queues) | |
d40156aa | 2196 | num_tx_queues = ops->get_num_tx_queues(); |
76ff5cc9 JP |
2197 | |
2198 | if (tb[IFLA_NUM_RX_QUEUES]) | |
2199 | num_rx_queues = nla_get_u32(tb[IFLA_NUM_RX_QUEUES]); | |
2200 | else if (ops->get_num_rx_queues) | |
d40156aa | 2201 | num_rx_queues = ops->get_num_rx_queues(); |
efacb309 | 2202 | |
e7199288 | 2203 | err = -ENOMEM; |
5517750f | 2204 | dev = alloc_netdev_mqs(ops->priv_size, ifname, name_assign_type, |
c835a677 | 2205 | ops->setup, num_tx_queues, num_rx_queues); |
e7199288 PE |
2206 | if (!dev) |
2207 | goto err; | |
2208 | ||
81adee47 EB |
2209 | dev_net_set(dev, net); |
2210 | dev->rtnl_link_ops = ops; | |
3729d502 | 2211 | dev->rtnl_link_state = RTNL_LINK_INITIALIZING; |
81adee47 | 2212 | |
e7199288 PE |
2213 | if (tb[IFLA_MTU]) |
2214 | dev->mtu = nla_get_u32(tb[IFLA_MTU]); | |
2afb9b53 | 2215 | if (tb[IFLA_ADDRESS]) { |
e7199288 PE |
2216 | memcpy(dev->dev_addr, nla_data(tb[IFLA_ADDRESS]), |
2217 | nla_len(tb[IFLA_ADDRESS])); | |
2afb9b53 JP |
2218 | dev->addr_assign_type = NET_ADDR_SET; |
2219 | } | |
e7199288 PE |
2220 | if (tb[IFLA_BROADCAST]) |
2221 | memcpy(dev->broadcast, nla_data(tb[IFLA_BROADCAST]), | |
2222 | nla_len(tb[IFLA_BROADCAST])); | |
2223 | if (tb[IFLA_TXQLEN]) | |
2224 | dev->tx_queue_len = nla_get_u32(tb[IFLA_TXQLEN]); | |
2225 | if (tb[IFLA_OPERSTATE]) | |
93b2d4a2 | 2226 | set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE])); |
e7199288 PE |
2227 | if (tb[IFLA_LINKMODE]) |
2228 | dev->link_mode = nla_get_u8(tb[IFLA_LINKMODE]); | |
ffa934f1 PM |
2229 | if (tb[IFLA_GROUP]) |
2230 | dev_set_group(dev, nla_get_u32(tb[IFLA_GROUP])); | |
e7199288 PE |
2231 | |
2232 | return dev; | |
2233 | ||
e7199288 PE |
2234 | err: |
2235 | return ERR_PTR(err); | |
2236 | } | |
e0d087af | 2237 | EXPORT_SYMBOL(rtnl_create_link); |
e7199288 | 2238 | |
90f62cf3 EB |
2239 | static int rtnl_group_changelink(const struct sk_buff *skb, |
2240 | struct net *net, int group, | |
e7ed828f VD |
2241 | struct ifinfomsg *ifm, |
2242 | struct nlattr **tb) | |
2243 | { | |
d079535d | 2244 | struct net_device *dev, *aux; |
e7ed828f VD |
2245 | int err; |
2246 | ||
d079535d | 2247 | for_each_netdev_safe(net, dev, aux) { |
e7ed828f | 2248 | if (dev->group == group) { |
90f62cf3 | 2249 | err = do_setlink(skb, dev, ifm, tb, NULL, 0); |
e7ed828f VD |
2250 | if (err < 0) |
2251 | return err; | |
2252 | } | |
2253 | } | |
2254 | ||
2255 | return 0; | |
2256 | } | |
2257 | ||
661d2967 | 2258 | static int rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh) |
38f7b870 | 2259 | { |
3b1e0a65 | 2260 | struct net *net = sock_net(skb->sk); |
38f7b870 | 2261 | const struct rtnl_link_ops *ops; |
ba7d49b1 | 2262 | const struct rtnl_link_ops *m_ops = NULL; |
38f7b870 | 2263 | struct net_device *dev; |
ba7d49b1 | 2264 | struct net_device *master_dev = NULL; |
38f7b870 PM |
2265 | struct ifinfomsg *ifm; |
2266 | char kind[MODULE_NAME_LEN]; | |
2267 | char ifname[IFNAMSIZ]; | |
2268 | struct nlattr *tb[IFLA_MAX+1]; | |
2269 | struct nlattr *linkinfo[IFLA_INFO_MAX+1]; | |
5517750f | 2270 | unsigned char name_assign_type = NET_NAME_USER; |
38f7b870 PM |
2271 | int err; |
2272 | ||
95a5afca | 2273 | #ifdef CONFIG_MODULES |
38f7b870 | 2274 | replay: |
8072f085 | 2275 | #endif |
38f7b870 PM |
2276 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); |
2277 | if (err < 0) | |
2278 | return err; | |
2279 | ||
2280 | if (tb[IFLA_IFNAME]) | |
2281 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
2282 | else | |
2283 | ifname[0] = '\0'; | |
2284 | ||
2285 | ifm = nlmsg_data(nlh); | |
2286 | if (ifm->ifi_index > 0) | |
881d966b | 2287 | dev = __dev_get_by_index(net, ifm->ifi_index); |
e7ed828f VD |
2288 | else { |
2289 | if (ifname[0]) | |
2290 | dev = __dev_get_by_name(net, ifname); | |
e7ed828f VD |
2291 | else |
2292 | dev = NULL; | |
2293 | } | |
38f7b870 | 2294 | |
ba7d49b1 JP |
2295 | if (dev) { |
2296 | master_dev = netdev_master_upper_dev_get(dev); | |
2297 | if (master_dev) | |
2298 | m_ops = master_dev->rtnl_link_ops; | |
2299 | } | |
2300 | ||
e0d087af ED |
2301 | err = validate_linkmsg(dev, tb); |
2302 | if (err < 0) | |
1840bb13 TG |
2303 | return err; |
2304 | ||
38f7b870 PM |
2305 | if (tb[IFLA_LINKINFO]) { |
2306 | err = nla_parse_nested(linkinfo, IFLA_INFO_MAX, | |
2307 | tb[IFLA_LINKINFO], ifla_info_policy); | |
2308 | if (err < 0) | |
2309 | return err; | |
2310 | } else | |
2311 | memset(linkinfo, 0, sizeof(linkinfo)); | |
2312 | ||
2313 | if (linkinfo[IFLA_INFO_KIND]) { | |
2314 | nla_strlcpy(kind, linkinfo[IFLA_INFO_KIND], sizeof(kind)); | |
2315 | ops = rtnl_link_ops_get(kind); | |
2316 | } else { | |
2317 | kind[0] = '\0'; | |
2318 | ops = NULL; | |
2319 | } | |
2320 | ||
2321 | if (1) { | |
4e10fd5b SL |
2322 | struct nlattr *attr[ops ? ops->maxtype + 1 : 1]; |
2323 | struct nlattr *slave_attr[m_ops ? m_ops->slave_maxtype + 1 : 1]; | |
ba7d49b1 JP |
2324 | struct nlattr **data = NULL; |
2325 | struct nlattr **slave_data = NULL; | |
317f4810 | 2326 | struct net *dest_net, *link_net = NULL; |
38f7b870 PM |
2327 | |
2328 | if (ops) { | |
2329 | if (ops->maxtype && linkinfo[IFLA_INFO_DATA]) { | |
2330 | err = nla_parse_nested(attr, ops->maxtype, | |
2331 | linkinfo[IFLA_INFO_DATA], | |
2332 | ops->policy); | |
2333 | if (err < 0) | |
2334 | return err; | |
2335 | data = attr; | |
2336 | } | |
2337 | if (ops->validate) { | |
2338 | err = ops->validate(tb, data); | |
2339 | if (err < 0) | |
2340 | return err; | |
2341 | } | |
2342 | } | |
2343 | ||
ba7d49b1 JP |
2344 | if (m_ops) { |
2345 | if (m_ops->slave_maxtype && | |
2346 | linkinfo[IFLA_INFO_SLAVE_DATA]) { | |
2347 | err = nla_parse_nested(slave_attr, | |
2348 | m_ops->slave_maxtype, | |
2349 | linkinfo[IFLA_INFO_SLAVE_DATA], | |
2350 | m_ops->slave_policy); | |
2351 | if (err < 0) | |
2352 | return err; | |
2353 | slave_data = slave_attr; | |
2354 | } | |
2355 | if (m_ops->slave_validate) { | |
2356 | err = m_ops->slave_validate(tb, slave_data); | |
2357 | if (err < 0) | |
2358 | return err; | |
2359 | } | |
2360 | } | |
2361 | ||
38f7b870 | 2362 | if (dev) { |
90c325e3 | 2363 | int status = 0; |
38f7b870 PM |
2364 | |
2365 | if (nlh->nlmsg_flags & NLM_F_EXCL) | |
2366 | return -EEXIST; | |
2367 | if (nlh->nlmsg_flags & NLM_F_REPLACE) | |
2368 | return -EOPNOTSUPP; | |
2369 | ||
2370 | if (linkinfo[IFLA_INFO_DATA]) { | |
2371 | if (!ops || ops != dev->rtnl_link_ops || | |
2372 | !ops->changelink) | |
2373 | return -EOPNOTSUPP; | |
2374 | ||
2375 | err = ops->changelink(dev, tb, data); | |
2376 | if (err < 0) | |
2377 | return err; | |
ba998906 | 2378 | status |= DO_SETLINK_NOTIFY; |
38f7b870 PM |
2379 | } |
2380 | ||
ba7d49b1 JP |
2381 | if (linkinfo[IFLA_INFO_SLAVE_DATA]) { |
2382 | if (!m_ops || !m_ops->slave_changelink) | |
2383 | return -EOPNOTSUPP; | |
2384 | ||
2385 | err = m_ops->slave_changelink(master_dev, dev, | |
2386 | tb, slave_data); | |
2387 | if (err < 0) | |
2388 | return err; | |
ba998906 | 2389 | status |= DO_SETLINK_NOTIFY; |
ba7d49b1 JP |
2390 | } |
2391 | ||
90c325e3 | 2392 | return do_setlink(skb, dev, ifm, tb, ifname, status); |
38f7b870 PM |
2393 | } |
2394 | ||
ffa934f1 PM |
2395 | if (!(nlh->nlmsg_flags & NLM_F_CREATE)) { |
2396 | if (ifm->ifi_index == 0 && tb[IFLA_GROUP]) | |
90f62cf3 | 2397 | return rtnl_group_changelink(skb, net, |
ffa934f1 PM |
2398 | nla_get_u32(tb[IFLA_GROUP]), |
2399 | ifm, tb); | |
38f7b870 | 2400 | return -ENODEV; |
ffa934f1 | 2401 | } |
38f7b870 | 2402 | |
0e06877c | 2403 | if (tb[IFLA_MAP] || tb[IFLA_MASTER] || tb[IFLA_PROTINFO]) |
38f7b870 PM |
2404 | return -EOPNOTSUPP; |
2405 | ||
2406 | if (!ops) { | |
95a5afca | 2407 | #ifdef CONFIG_MODULES |
38f7b870 PM |
2408 | if (kind[0]) { |
2409 | __rtnl_unlock(); | |
2410 | request_module("rtnl-link-%s", kind); | |
2411 | rtnl_lock(); | |
2412 | ops = rtnl_link_ops_get(kind); | |
2413 | if (ops) | |
2414 | goto replay; | |
2415 | } | |
2416 | #endif | |
2417 | return -EOPNOTSUPP; | |
2418 | } | |
2419 | ||
b0ab2fab JP |
2420 | if (!ops->setup) |
2421 | return -EOPNOTSUPP; | |
2422 | ||
5517750f | 2423 | if (!ifname[0]) { |
38f7b870 | 2424 | snprintf(ifname, IFNAMSIZ, "%s%%d", ops->kind); |
5517750f TG |
2425 | name_assign_type = NET_NAME_ENUM; |
2426 | } | |
e7199288 | 2427 | |
81adee47 | 2428 | dest_net = rtnl_link_get_net(net, tb); |
13ad1774 EB |
2429 | if (IS_ERR(dest_net)) |
2430 | return PTR_ERR(dest_net); | |
2431 | ||
505ce415 EB |
2432 | err = -EPERM; |
2433 | if (!netlink_ns_capable(skb, dest_net->user_ns, CAP_NET_ADMIN)) | |
2434 | goto out; | |
2435 | ||
317f4810 ND |
2436 | if (tb[IFLA_LINK_NETNSID]) { |
2437 | int id = nla_get_s32(tb[IFLA_LINK_NETNSID]); | |
2438 | ||
2439 | link_net = get_net_ns_by_id(dest_net, id); | |
2440 | if (!link_net) { | |
2441 | err = -EINVAL; | |
2442 | goto out; | |
2443 | } | |
06615bed EB |
2444 | err = -EPERM; |
2445 | if (!netlink_ns_capable(skb, link_net->user_ns, CAP_NET_ADMIN)) | |
2446 | goto out; | |
317f4810 ND |
2447 | } |
2448 | ||
2449 | dev = rtnl_create_link(link_net ? : dest_net, ifname, | |
2450 | name_assign_type, ops, tb); | |
9c7dafbf | 2451 | if (IS_ERR(dev)) { |
e7199288 | 2452 | err = PTR_ERR(dev); |
9c7dafbf PE |
2453 | goto out; |
2454 | } | |
2455 | ||
2456 | dev->ifindex = ifm->ifi_index; | |
2457 | ||
0e0eee24 | 2458 | if (ops->newlink) { |
7b4ce694 | 2459 | err = ops->newlink(link_net ? : net, dev, tb, data); |
0e0eee24 | 2460 | /* Drivers should call free_netdev() in ->destructor |
e51fb152 CW |
2461 | * and unregister it on failure after registration |
2462 | * so that device could be finally freed in rtnl_unlock. | |
0e0eee24 | 2463 | */ |
e51fb152 CW |
2464 | if (err < 0) { |
2465 | /* If device is not registered at all, free it now */ | |
2466 | if (dev->reg_state == NETREG_UNINITIALIZED) | |
2467 | free_netdev(dev); | |
0e0eee24 | 2468 | goto out; |
e51fb152 | 2469 | } |
0e0eee24 | 2470 | } else { |
2d85cba2 | 2471 | err = register_netdevice(dev); |
0e0eee24 CW |
2472 | if (err < 0) { |
2473 | free_netdev(dev); | |
2474 | goto out; | |
2475 | } | |
fce9b9be | 2476 | } |
3729d502 | 2477 | err = rtnl_configure_link(dev, ifm); |
43638900 DM |
2478 | if (err < 0) |
2479 | goto out_unregister; | |
bdef279b | 2480 | if (link_net) { |
317f4810 | 2481 | err = dev_change_net_namespace(dev, dest_net, ifname); |
bdef279b | 2482 | if (err < 0) |
43638900 | 2483 | goto out_unregister; |
bdef279b | 2484 | } |
3729d502 | 2485 | out: |
317f4810 ND |
2486 | if (link_net) |
2487 | put_net(link_net); | |
81adee47 | 2488 | put_net(dest_net); |
38f7b870 | 2489 | return err; |
43638900 DM |
2490 | out_unregister: |
2491 | if (ops->newlink) { | |
2492 | LIST_HEAD(list_kill); | |
2493 | ||
2494 | ops->dellink(dev, &list_kill); | |
2495 | unregister_netdevice_many(&list_kill); | |
2496 | } else { | |
2497 | unregister_netdevice(dev); | |
2498 | } | |
2499 | goto out; | |
38f7b870 PM |
2500 | } |
2501 | } | |
2502 | ||
661d2967 | 2503 | static int rtnl_getlink(struct sk_buff *skb, struct nlmsghdr* nlh) |
711e2c33 | 2504 | { |
3b1e0a65 | 2505 | struct net *net = sock_net(skb->sk); |
b60c5115 | 2506 | struct ifinfomsg *ifm; |
a3d12891 | 2507 | char ifname[IFNAMSIZ]; |
b60c5115 TG |
2508 | struct nlattr *tb[IFLA_MAX+1]; |
2509 | struct net_device *dev = NULL; | |
2510 | struct sk_buff *nskb; | |
339bf98f | 2511 | int err; |
115c9b81 | 2512 | u32 ext_filter_mask = 0; |
711e2c33 | 2513 | |
b60c5115 TG |
2514 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); |
2515 | if (err < 0) | |
9918f230 | 2516 | return err; |
b60c5115 | 2517 | |
a3d12891 ED |
2518 | if (tb[IFLA_IFNAME]) |
2519 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
2520 | ||
115c9b81 GR |
2521 | if (tb[IFLA_EXT_MASK]) |
2522 | ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]); | |
2523 | ||
b60c5115 | 2524 | ifm = nlmsg_data(nlh); |
a3d12891 ED |
2525 | if (ifm->ifi_index > 0) |
2526 | dev = __dev_get_by_index(net, ifm->ifi_index); | |
2527 | else if (tb[IFLA_IFNAME]) | |
2528 | dev = __dev_get_by_name(net, ifname); | |
2529 | else | |
711e2c33 | 2530 | return -EINVAL; |
711e2c33 | 2531 | |
a3d12891 ED |
2532 | if (dev == NULL) |
2533 | return -ENODEV; | |
2534 | ||
115c9b81 | 2535 | nskb = nlmsg_new(if_nlmsg_size(dev, ext_filter_mask), GFP_KERNEL); |
a3d12891 ED |
2536 | if (nskb == NULL) |
2537 | return -ENOBUFS; | |
b60c5115 | 2538 | |
15e47304 | 2539 | err = rtnl_fill_ifinfo(nskb, dev, RTM_NEWLINK, NETLINK_CB(skb).portid, |
115c9b81 | 2540 | nlh->nlmsg_seq, 0, 0, ext_filter_mask); |
26932566 PM |
2541 | if (err < 0) { |
2542 | /* -EMSGSIZE implies BUG in if_nlmsg_size */ | |
2543 | WARN_ON(err == -EMSGSIZE); | |
2544 | kfree_skb(nskb); | |
a3d12891 | 2545 | } else |
15e47304 | 2546 | err = rtnl_unicast(nskb, net, NETLINK_CB(skb).portid); |
711e2c33 | 2547 | |
b60c5115 | 2548 | return err; |
711e2c33 | 2549 | } |
711e2c33 | 2550 | |
115c9b81 | 2551 | static u16 rtnl_calcit(struct sk_buff *skb, struct nlmsghdr *nlh) |
c7ac8679 | 2552 | { |
115c9b81 GR |
2553 | struct net *net = sock_net(skb->sk); |
2554 | struct net_device *dev; | |
2555 | struct nlattr *tb[IFLA_MAX+1]; | |
2556 | u32 ext_filter_mask = 0; | |
2557 | u16 min_ifinfo_dump_size = 0; | |
e5eca6d4 MS |
2558 | int hdrlen; |
2559 | ||
2560 | /* Same kernel<->userspace interface hack as in rtnl_dump_ifinfo. */ | |
2561 | hdrlen = nlmsg_len(nlh) < sizeof(struct ifinfomsg) ? | |
2562 | sizeof(struct rtgenmsg) : sizeof(struct ifinfomsg); | |
115c9b81 | 2563 | |
e5eca6d4 | 2564 | if (nlmsg_parse(nlh, hdrlen, tb, IFLA_MAX, ifla_policy) >= 0) { |
a4b64fbe ED |
2565 | if (tb[IFLA_EXT_MASK]) |
2566 | ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]); | |
2567 | } | |
115c9b81 GR |
2568 | |
2569 | if (!ext_filter_mask) | |
2570 | return NLMSG_GOODSIZE; | |
2571 | /* | |
2572 | * traverse the list of net devices and compute the minimum | |
2573 | * buffer size based upon the filter mask. | |
2574 | */ | |
2575 | list_for_each_entry(dev, &net->dev_base_head, dev_list) { | |
2576 | min_ifinfo_dump_size = max_t(u16, min_ifinfo_dump_size, | |
2577 | if_nlmsg_size(dev, | |
2578 | ext_filter_mask)); | |
2579 | } | |
2580 | ||
c7ac8679 GR |
2581 | return min_ifinfo_dump_size; |
2582 | } | |
2583 | ||
42bad1da | 2584 | static int rtnl_dump_all(struct sk_buff *skb, struct netlink_callback *cb) |
1da177e4 LT |
2585 | { |
2586 | int idx; | |
2587 | int s_idx = cb->family; | |
2588 | ||
2589 | if (s_idx == 0) | |
2590 | s_idx = 1; | |
25239cee | 2591 | for (idx = 1; idx <= RTNL_FAMILY_MAX; idx++) { |
1da177e4 LT |
2592 | int type = cb->nlh->nlmsg_type-RTM_BASE; |
2593 | if (idx < s_idx || idx == PF_PACKET) | |
2594 | continue; | |
e2849863 TG |
2595 | if (rtnl_msg_handlers[idx] == NULL || |
2596 | rtnl_msg_handlers[idx][type].dumpit == NULL) | |
1da177e4 | 2597 | continue; |
0465277f | 2598 | if (idx > s_idx) { |
1da177e4 | 2599 | memset(&cb->args[0], 0, sizeof(cb->args)); |
0465277f ND |
2600 | cb->prev_seq = 0; |
2601 | cb->seq = 0; | |
2602 | } | |
e2849863 | 2603 | if (rtnl_msg_handlers[idx][type].dumpit(skb, cb)) |
1da177e4 LT |
2604 | break; |
2605 | } | |
2606 | cb->family = idx; | |
2607 | ||
2608 | return skb->len; | |
2609 | } | |
2610 | ||
395eea6c MB |
2611 | struct sk_buff *rtmsg_ifinfo_build_skb(int type, struct net_device *dev, |
2612 | unsigned int change, gfp_t flags) | |
1da177e4 | 2613 | { |
c346dca1 | 2614 | struct net *net = dev_net(dev); |
1da177e4 | 2615 | struct sk_buff *skb; |
0ec6d3f4 | 2616 | int err = -ENOBUFS; |
c7ac8679 | 2617 | size_t if_info_size; |
1da177e4 | 2618 | |
7f294054 | 2619 | skb = nlmsg_new((if_info_size = if_nlmsg_size(dev, 0)), flags); |
0ec6d3f4 TG |
2620 | if (skb == NULL) |
2621 | goto errout; | |
1da177e4 | 2622 | |
115c9b81 | 2623 | err = rtnl_fill_ifinfo(skb, dev, type, 0, 0, change, 0, 0); |
26932566 PM |
2624 | if (err < 0) { |
2625 | /* -EMSGSIZE implies BUG in if_nlmsg_size() */ | |
2626 | WARN_ON(err == -EMSGSIZE); | |
2627 | kfree_skb(skb); | |
2628 | goto errout; | |
2629 | } | |
395eea6c | 2630 | return skb; |
0ec6d3f4 TG |
2631 | errout: |
2632 | if (err < 0) | |
4b3da706 | 2633 | rtnl_set_sk_err(net, RTNLGRP_LINK, err); |
395eea6c MB |
2634 | return NULL; |
2635 | } | |
2636 | ||
2637 | void rtmsg_ifinfo_send(struct sk_buff *skb, struct net_device *dev, gfp_t flags) | |
2638 | { | |
2639 | struct net *net = dev_net(dev); | |
2640 | ||
2641 | rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, flags); | |
2642 | } | |
2643 | ||
2644 | void rtmsg_ifinfo(int type, struct net_device *dev, unsigned int change, | |
2645 | gfp_t flags) | |
2646 | { | |
2647 | struct sk_buff *skb; | |
2648 | ||
ed2a80ab ND |
2649 | if (dev->reg_state != NETREG_REGISTERED) |
2650 | return; | |
2651 | ||
395eea6c MB |
2652 | skb = rtmsg_ifinfo_build_skb(type, dev, change, flags); |
2653 | if (skb) | |
2654 | rtmsg_ifinfo_send(skb, dev, flags); | |
1da177e4 | 2655 | } |
471cb5a3 | 2656 | EXPORT_SYMBOL(rtmsg_ifinfo); |
1da177e4 | 2657 | |
d83b0603 JF |
2658 | static int nlmsg_populate_fdb_fill(struct sk_buff *skb, |
2659 | struct net_device *dev, | |
1e53d5bb | 2660 | u8 *addr, u16 vid, u32 pid, u32 seq, |
1c104a6b | 2661 | int type, unsigned int flags, |
b3379041 | 2662 | int nlflags, u16 ndm_state) |
d83b0603 JF |
2663 | { |
2664 | struct nlmsghdr *nlh; | |
2665 | struct ndmsg *ndm; | |
2666 | ||
1c104a6b | 2667 | nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ndm), nlflags); |
d83b0603 JF |
2668 | if (!nlh) |
2669 | return -EMSGSIZE; | |
2670 | ||
2671 | ndm = nlmsg_data(nlh); | |
2672 | ndm->ndm_family = AF_BRIDGE; | |
2673 | ndm->ndm_pad1 = 0; | |
2674 | ndm->ndm_pad2 = 0; | |
2675 | ndm->ndm_flags = flags; | |
2676 | ndm->ndm_type = 0; | |
2677 | ndm->ndm_ifindex = dev->ifindex; | |
b3379041 | 2678 | ndm->ndm_state = ndm_state; |
d83b0603 JF |
2679 | |
2680 | if (nla_put(skb, NDA_LLADDR, ETH_ALEN, addr)) | |
2681 | goto nla_put_failure; | |
1e53d5bb HS |
2682 | if (vid) |
2683 | if (nla_put(skb, NDA_VLAN, sizeof(u16), &vid)) | |
2684 | goto nla_put_failure; | |
d83b0603 | 2685 | |
053c095a JB |
2686 | nlmsg_end(skb, nlh); |
2687 | return 0; | |
d83b0603 JF |
2688 | |
2689 | nla_put_failure: | |
2690 | nlmsg_cancel(skb, nlh); | |
2691 | return -EMSGSIZE; | |
2692 | } | |
2693 | ||
3ff661c3 JF |
2694 | static inline size_t rtnl_fdb_nlmsg_size(void) |
2695 | { | |
2696 | return NLMSG_ALIGN(sizeof(struct ndmsg)) + nla_total_size(ETH_ALEN); | |
2697 | } | |
2698 | ||
b3379041 HS |
2699 | static void rtnl_fdb_notify(struct net_device *dev, u8 *addr, u16 vid, int type, |
2700 | u16 ndm_state) | |
3ff661c3 JF |
2701 | { |
2702 | struct net *net = dev_net(dev); | |
2703 | struct sk_buff *skb; | |
2704 | int err = -ENOBUFS; | |
2705 | ||
2706 | skb = nlmsg_new(rtnl_fdb_nlmsg_size(), GFP_ATOMIC); | |
2707 | if (!skb) | |
2708 | goto errout; | |
2709 | ||
1e53d5bb | 2710 | err = nlmsg_populate_fdb_fill(skb, dev, addr, vid, |
b3379041 | 2711 | 0, 0, type, NTF_SELF, 0, ndm_state); |
3ff661c3 JF |
2712 | if (err < 0) { |
2713 | kfree_skb(skb); | |
2714 | goto errout; | |
2715 | } | |
2716 | ||
2717 | rtnl_notify(skb, net, 0, RTNLGRP_NEIGH, NULL, GFP_ATOMIC); | |
2718 | return; | |
2719 | errout: | |
2720 | rtnl_set_sk_err(net, RTNLGRP_NEIGH, err); | |
2721 | } | |
2722 | ||
090096bf VY |
2723 | /** |
2724 | * ndo_dflt_fdb_add - default netdevice operation to add an FDB entry | |
2725 | */ | |
2726 | int ndo_dflt_fdb_add(struct ndmsg *ndm, | |
2727 | struct nlattr *tb[], | |
2728 | struct net_device *dev, | |
f6f6424b | 2729 | const unsigned char *addr, u16 vid, |
090096bf VY |
2730 | u16 flags) |
2731 | { | |
2732 | int err = -EINVAL; | |
2733 | ||
2734 | /* If aging addresses are supported device will need to | |
2735 | * implement its own handler for this. | |
2736 | */ | |
2737 | if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) { | |
2738 | pr_info("%s: FDB only supports static addresses\n", dev->name); | |
2739 | return err; | |
2740 | } | |
2741 | ||
65891fea OG |
2742 | if (vid) { |
2743 | pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name); | |
2744 | return err; | |
2745 | } | |
2746 | ||
090096bf VY |
2747 | if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr)) |
2748 | err = dev_uc_add_excl(dev, addr); | |
2749 | else if (is_multicast_ether_addr(addr)) | |
2750 | err = dev_mc_add_excl(dev, addr); | |
2751 | ||
2752 | /* Only return duplicate errors if NLM_F_EXCL is set */ | |
2753 | if (err == -EEXIST && !(flags & NLM_F_EXCL)) | |
2754 | err = 0; | |
2755 | ||
2756 | return err; | |
2757 | } | |
2758 | EXPORT_SYMBOL(ndo_dflt_fdb_add); | |
2759 | ||
f6f6424b JP |
2760 | static int fdb_vid_parse(struct nlattr *vlan_attr, u16 *p_vid) |
2761 | { | |
2762 | u16 vid = 0; | |
2763 | ||
2764 | if (vlan_attr) { | |
2765 | if (nla_len(vlan_attr) != sizeof(u16)) { | |
2766 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid vlan\n"); | |
2767 | return -EINVAL; | |
2768 | } | |
2769 | ||
2770 | vid = nla_get_u16(vlan_attr); | |
2771 | ||
2772 | if (!vid || vid >= VLAN_VID_MASK) { | |
2773 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid vlan id %d\n", | |
2774 | vid); | |
2775 | return -EINVAL; | |
2776 | } | |
2777 | } | |
2778 | *p_vid = vid; | |
2779 | return 0; | |
2780 | } | |
2781 | ||
661d2967 | 2782 | static int rtnl_fdb_add(struct sk_buff *skb, struct nlmsghdr *nlh) |
77162022 JF |
2783 | { |
2784 | struct net *net = sock_net(skb->sk); | |
77162022 JF |
2785 | struct ndmsg *ndm; |
2786 | struct nlattr *tb[NDA_MAX+1]; | |
2787 | struct net_device *dev; | |
2788 | u8 *addr; | |
f6f6424b | 2789 | u16 vid; |
77162022 JF |
2790 | int err; |
2791 | ||
2792 | err = nlmsg_parse(nlh, sizeof(*ndm), tb, NDA_MAX, NULL); | |
2793 | if (err < 0) | |
2794 | return err; | |
2795 | ||
2796 | ndm = nlmsg_data(nlh); | |
2797 | if (ndm->ndm_ifindex == 0) { | |
2798 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid ifindex\n"); | |
2799 | return -EINVAL; | |
2800 | } | |
2801 | ||
2802 | dev = __dev_get_by_index(net, ndm->ndm_ifindex); | |
2803 | if (dev == NULL) { | |
2804 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with unknown ifindex\n"); | |
2805 | return -ENODEV; | |
2806 | } | |
2807 | ||
2808 | if (!tb[NDA_LLADDR] || nla_len(tb[NDA_LLADDR]) != ETH_ALEN) { | |
2809 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid address\n"); | |
2810 | return -EINVAL; | |
2811 | } | |
2812 | ||
2813 | addr = nla_data(tb[NDA_LLADDR]); | |
77162022 | 2814 | |
f6f6424b JP |
2815 | err = fdb_vid_parse(tb[NDA_VLAN], &vid); |
2816 | if (err) | |
2817 | return err; | |
2818 | ||
77162022 JF |
2819 | err = -EOPNOTSUPP; |
2820 | ||
2821 | /* Support fdb on master device the net/bridge default case */ | |
2822 | if ((!ndm->ndm_flags || ndm->ndm_flags & NTF_MASTER) && | |
2823 | (dev->priv_flags & IFF_BRIDGE_PORT)) { | |
898e5061 JP |
2824 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
2825 | const struct net_device_ops *ops = br_dev->netdev_ops; | |
2826 | ||
f6f6424b JP |
2827 | err = ops->ndo_fdb_add(ndm, tb, dev, addr, vid, |
2828 | nlh->nlmsg_flags); | |
77162022 JF |
2829 | if (err) |
2830 | goto out; | |
2831 | else | |
2832 | ndm->ndm_flags &= ~NTF_MASTER; | |
2833 | } | |
2834 | ||
2835 | /* Embedded bridge, macvlan, and any other device support */ | |
090096bf VY |
2836 | if ((ndm->ndm_flags & NTF_SELF)) { |
2837 | if (dev->netdev_ops->ndo_fdb_add) | |
2838 | err = dev->netdev_ops->ndo_fdb_add(ndm, tb, dev, addr, | |
f6f6424b | 2839 | vid, |
090096bf VY |
2840 | nlh->nlmsg_flags); |
2841 | else | |
f6f6424b | 2842 | err = ndo_dflt_fdb_add(ndm, tb, dev, addr, vid, |
090096bf | 2843 | nlh->nlmsg_flags); |
77162022 | 2844 | |
3ff661c3 | 2845 | if (!err) { |
b3379041 HS |
2846 | rtnl_fdb_notify(dev, addr, vid, RTM_NEWNEIGH, |
2847 | ndm->ndm_state); | |
77162022 | 2848 | ndm->ndm_flags &= ~NTF_SELF; |
3ff661c3 | 2849 | } |
77162022 JF |
2850 | } |
2851 | out: | |
2852 | return err; | |
2853 | } | |
2854 | ||
090096bf VY |
2855 | /** |
2856 | * ndo_dflt_fdb_del - default netdevice operation to delete an FDB entry | |
2857 | */ | |
2858 | int ndo_dflt_fdb_del(struct ndmsg *ndm, | |
2859 | struct nlattr *tb[], | |
2860 | struct net_device *dev, | |
f6f6424b | 2861 | const unsigned char *addr, u16 vid) |
090096bf | 2862 | { |
c8a89c4a | 2863 | int err = -EINVAL; |
090096bf VY |
2864 | |
2865 | /* If aging addresses are supported device will need to | |
2866 | * implement its own handler for this. | |
2867 | */ | |
64535993 | 2868 | if (!(ndm->ndm_state & NUD_PERMANENT)) { |
090096bf | 2869 | pr_info("%s: FDB only supports static addresses\n", dev->name); |
c8a89c4a | 2870 | return err; |
090096bf VY |
2871 | } |
2872 | ||
2873 | if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr)) | |
2874 | err = dev_uc_del(dev, addr); | |
2875 | else if (is_multicast_ether_addr(addr)) | |
2876 | err = dev_mc_del(dev, addr); | |
090096bf VY |
2877 | |
2878 | return err; | |
2879 | } | |
2880 | EXPORT_SYMBOL(ndo_dflt_fdb_del); | |
2881 | ||
661d2967 | 2882 | static int rtnl_fdb_del(struct sk_buff *skb, struct nlmsghdr *nlh) |
77162022 JF |
2883 | { |
2884 | struct net *net = sock_net(skb->sk); | |
2885 | struct ndmsg *ndm; | |
1690be63 | 2886 | struct nlattr *tb[NDA_MAX+1]; |
77162022 JF |
2887 | struct net_device *dev; |
2888 | int err = -EINVAL; | |
2889 | __u8 *addr; | |
f6f6424b | 2890 | u16 vid; |
77162022 | 2891 | |
90f62cf3 | 2892 | if (!netlink_capable(skb, CAP_NET_ADMIN)) |
1690be63 VY |
2893 | return -EPERM; |
2894 | ||
2895 | err = nlmsg_parse(nlh, sizeof(*ndm), tb, NDA_MAX, NULL); | |
2896 | if (err < 0) | |
2897 | return err; | |
77162022 JF |
2898 | |
2899 | ndm = nlmsg_data(nlh); | |
2900 | if (ndm->ndm_ifindex == 0) { | |
2901 | pr_info("PF_BRIDGE: RTM_DELNEIGH with invalid ifindex\n"); | |
2902 | return -EINVAL; | |
2903 | } | |
2904 | ||
2905 | dev = __dev_get_by_index(net, ndm->ndm_ifindex); | |
2906 | if (dev == NULL) { | |
2907 | pr_info("PF_BRIDGE: RTM_DELNEIGH with unknown ifindex\n"); | |
2908 | return -ENODEV; | |
2909 | } | |
2910 | ||
1690be63 VY |
2911 | if (!tb[NDA_LLADDR] || nla_len(tb[NDA_LLADDR]) != ETH_ALEN) { |
2912 | pr_info("PF_BRIDGE: RTM_DELNEIGH with invalid address\n"); | |
2913 | return -EINVAL; | |
2914 | } | |
2915 | ||
2916 | addr = nla_data(tb[NDA_LLADDR]); | |
77162022 | 2917 | |
f6f6424b JP |
2918 | err = fdb_vid_parse(tb[NDA_VLAN], &vid); |
2919 | if (err) | |
2920 | return err; | |
2921 | ||
77162022 JF |
2922 | err = -EOPNOTSUPP; |
2923 | ||
2924 | /* Support fdb on master device the net/bridge default case */ | |
2925 | if ((!ndm->ndm_flags || ndm->ndm_flags & NTF_MASTER) && | |
2926 | (dev->priv_flags & IFF_BRIDGE_PORT)) { | |
898e5061 JP |
2927 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
2928 | const struct net_device_ops *ops = br_dev->netdev_ops; | |
77162022 | 2929 | |
898e5061 | 2930 | if (ops->ndo_fdb_del) |
f6f6424b | 2931 | err = ops->ndo_fdb_del(ndm, tb, dev, addr, vid); |
77162022 JF |
2932 | |
2933 | if (err) | |
2934 | goto out; | |
2935 | else | |
2936 | ndm->ndm_flags &= ~NTF_MASTER; | |
2937 | } | |
2938 | ||
2939 | /* Embedded bridge, macvlan, and any other device support */ | |
090096bf VY |
2940 | if (ndm->ndm_flags & NTF_SELF) { |
2941 | if (dev->netdev_ops->ndo_fdb_del) | |
f6f6424b JP |
2942 | err = dev->netdev_ops->ndo_fdb_del(ndm, tb, dev, addr, |
2943 | vid); | |
090096bf | 2944 | else |
f6f6424b | 2945 | err = ndo_dflt_fdb_del(ndm, tb, dev, addr, vid); |
77162022 | 2946 | |
3ff661c3 | 2947 | if (!err) { |
b3379041 HS |
2948 | rtnl_fdb_notify(dev, addr, vid, RTM_DELNEIGH, |
2949 | ndm->ndm_state); | |
77162022 | 2950 | ndm->ndm_flags &= ~NTF_SELF; |
3ff661c3 | 2951 | } |
77162022 JF |
2952 | } |
2953 | out: | |
2954 | return err; | |
2955 | } | |
2956 | ||
d83b0603 JF |
2957 | static int nlmsg_populate_fdb(struct sk_buff *skb, |
2958 | struct netlink_callback *cb, | |
2959 | struct net_device *dev, | |
2960 | int *idx, | |
2961 | struct netdev_hw_addr_list *list) | |
2962 | { | |
2963 | struct netdev_hw_addr *ha; | |
2964 | int err; | |
15e47304 | 2965 | u32 portid, seq; |
d83b0603 | 2966 | |
15e47304 | 2967 | portid = NETLINK_CB(cb->skb).portid; |
d83b0603 JF |
2968 | seq = cb->nlh->nlmsg_seq; |
2969 | ||
2970 | list_for_each_entry(ha, &list->list, list) { | |
2971 | if (*idx < cb->args[0]) | |
2972 | goto skip; | |
2973 | ||
1e53d5bb | 2974 | err = nlmsg_populate_fdb_fill(skb, dev, ha->addr, 0, |
a7a558fe | 2975 | portid, seq, |
1c104a6b | 2976 | RTM_NEWNEIGH, NTF_SELF, |
b3379041 | 2977 | NLM_F_MULTI, NUD_PERMANENT); |
d83b0603 JF |
2978 | if (err < 0) |
2979 | return err; | |
2980 | skip: | |
2981 | *idx += 1; | |
2982 | } | |
2983 | return 0; | |
2984 | } | |
2985 | ||
2986 | /** | |
2c53040f | 2987 | * ndo_dflt_fdb_dump - default netdevice operation to dump an FDB table. |
d83b0603 JF |
2988 | * @nlh: netlink message header |
2989 | * @dev: netdevice | |
2990 | * | |
2991 | * Default netdevice operation to dump the existing unicast address list. | |
91f3e7b1 | 2992 | * Returns number of addresses from list put in skb. |
d83b0603 JF |
2993 | */ |
2994 | int ndo_dflt_fdb_dump(struct sk_buff *skb, | |
2995 | struct netlink_callback *cb, | |
2996 | struct net_device *dev, | |
5d5eacb3 | 2997 | struct net_device *filter_dev, |
d83b0603 JF |
2998 | int idx) |
2999 | { | |
3000 | int err; | |
3001 | ||
3002 | netif_addr_lock_bh(dev); | |
3003 | err = nlmsg_populate_fdb(skb, cb, dev, &idx, &dev->uc); | |
3004 | if (err) | |
3005 | goto out; | |
3006 | nlmsg_populate_fdb(skb, cb, dev, &idx, &dev->mc); | |
3007 | out: | |
3008 | netif_addr_unlock_bh(dev); | |
472681d5 | 3009 | cb->args[1] = err; |
d83b0603 JF |
3010 | return idx; |
3011 | } | |
3012 | EXPORT_SYMBOL(ndo_dflt_fdb_dump); | |
3013 | ||
77162022 JF |
3014 | static int rtnl_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb) |
3015 | { | |
77162022 | 3016 | struct net_device *dev; |
5e6d2435 | 3017 | struct nlattr *tb[IFLA_MAX+1]; |
5e6d2435 JHS |
3018 | struct net_device *br_dev = NULL; |
3019 | const struct net_device_ops *ops = NULL; | |
3020 | const struct net_device_ops *cops = NULL; | |
3021 | struct ifinfomsg *ifm = nlmsg_data(cb->nlh); | |
3022 | struct net *net = sock_net(skb->sk); | |
3023 | int brport_idx = 0; | |
3024 | int br_idx = 0; | |
3025 | int idx = 0; | |
3026 | ||
3027 | if (nlmsg_parse(cb->nlh, sizeof(struct ifinfomsg), tb, IFLA_MAX, | |
3028 | ifla_policy) == 0) { | |
3029 | if (tb[IFLA_MASTER]) | |
3030 | br_idx = nla_get_u32(tb[IFLA_MASTER]); | |
3031 | } | |
3032 | ||
3033 | brport_idx = ifm->ifi_index; | |
3034 | ||
3035 | if (br_idx) { | |
3036 | br_dev = __dev_get_by_index(net, br_idx); | |
3037 | if (!br_dev) | |
3038 | return -ENODEV; | |
3039 | ||
3040 | ops = br_dev->netdev_ops; | |
5e6d2435 JHS |
3041 | } |
3042 | ||
472681d5 | 3043 | cb->args[1] = 0; |
5e6d2435 JHS |
3044 | for_each_netdev(net, dev) { |
3045 | if (brport_idx && (dev->ifindex != brport_idx)) | |
3046 | continue; | |
3047 | ||
3048 | if (!br_idx) { /* user did not specify a specific bridge */ | |
3049 | if (dev->priv_flags & IFF_BRIDGE_PORT) { | |
3050 | br_dev = netdev_master_upper_dev_get(dev); | |
3051 | cops = br_dev->netdev_ops; | |
3052 | } | |
3053 | ||
5e6d2435 JHS |
3054 | } else { |
3055 | if (dev != br_dev && | |
3056 | !(dev->priv_flags & IFF_BRIDGE_PORT)) | |
3057 | continue; | |
3058 | ||
3059 | if (br_dev != netdev_master_upper_dev_get(dev) && | |
3060 | !(dev->priv_flags & IFF_EBRIDGE)) | |
3061 | continue; | |
3062 | ||
5e6d2435 JHS |
3063 | cops = ops; |
3064 | } | |
77162022 | 3065 | |
77162022 | 3066 | if (dev->priv_flags & IFF_BRIDGE_PORT) { |
5e6d2435 JHS |
3067 | if (cops && cops->ndo_fdb_dump) |
3068 | idx = cops->ndo_fdb_dump(skb, cb, br_dev, dev, | |
3069 | idx); | |
77162022 | 3070 | } |
472681d5 MM |
3071 | if (cb->args[1] == -EMSGSIZE) |
3072 | break; | |
77162022 JF |
3073 | |
3074 | if (dev->netdev_ops->ndo_fdb_dump) | |
6cb69742 | 3075 | idx = dev->netdev_ops->ndo_fdb_dump(skb, cb, dev, NULL, |
5d5eacb3 | 3076 | idx); |
6cb69742 HS |
3077 | else |
3078 | idx = ndo_dflt_fdb_dump(skb, cb, dev, NULL, idx); | |
472681d5 MM |
3079 | if (cb->args[1] == -EMSGSIZE) |
3080 | break; | |
5e6d2435 JHS |
3081 | |
3082 | cops = NULL; | |
77162022 | 3083 | } |
77162022 JF |
3084 | |
3085 | cb->args[0] = idx; | |
3086 | return skb->len; | |
3087 | } | |
3088 | ||
2c3c031c SF |
3089 | static int brport_nla_put_flag(struct sk_buff *skb, u32 flags, u32 mask, |
3090 | unsigned int attrnum, unsigned int flag) | |
3091 | { | |
3092 | if (mask & flag) | |
3093 | return nla_put_u8(skb, attrnum, !!(flags & flag)); | |
3094 | return 0; | |
3095 | } | |
3096 | ||
815cccbf | 3097 | int ndo_dflt_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq, |
2c3c031c | 3098 | struct net_device *dev, u16 mode, |
7d4f8d87 SF |
3099 | u32 flags, u32 mask, int nlflags, |
3100 | u32 filter_mask, | |
3101 | int (*vlan_fill)(struct sk_buff *skb, | |
3102 | struct net_device *dev, | |
3103 | u32 filter_mask)) | |
815cccbf JF |
3104 | { |
3105 | struct nlmsghdr *nlh; | |
3106 | struct ifinfomsg *ifm; | |
3107 | struct nlattr *br_afspec; | |
2c3c031c | 3108 | struct nlattr *protinfo; |
815cccbf | 3109 | u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN; |
898e5061 | 3110 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
7d4f8d87 | 3111 | int err = 0; |
815cccbf | 3112 | |
46c264da | 3113 | nlh = nlmsg_put(skb, pid, seq, RTM_NEWLINK, sizeof(*ifm), nlflags); |
815cccbf JF |
3114 | if (nlh == NULL) |
3115 | return -EMSGSIZE; | |
3116 | ||
3117 | ifm = nlmsg_data(nlh); | |
3118 | ifm->ifi_family = AF_BRIDGE; | |
3119 | ifm->__ifi_pad = 0; | |
3120 | ifm->ifi_type = dev->type; | |
3121 | ifm->ifi_index = dev->ifindex; | |
3122 | ifm->ifi_flags = dev_get_flags(dev); | |
3123 | ifm->ifi_change = 0; | |
3124 | ||
3125 | ||
3126 | if (nla_put_string(skb, IFLA_IFNAME, dev->name) || | |
3127 | nla_put_u32(skb, IFLA_MTU, dev->mtu) || | |
3128 | nla_put_u8(skb, IFLA_OPERSTATE, operstate) || | |
898e5061 JP |
3129 | (br_dev && |
3130 | nla_put_u32(skb, IFLA_MASTER, br_dev->ifindex)) || | |
815cccbf JF |
3131 | (dev->addr_len && |
3132 | nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) || | |
a54acb3a ND |
3133 | (dev->ifindex != dev_get_iflink(dev) && |
3134 | nla_put_u32(skb, IFLA_LINK, dev_get_iflink(dev)))) | |
815cccbf JF |
3135 | goto nla_put_failure; |
3136 | ||
3137 | br_afspec = nla_nest_start(skb, IFLA_AF_SPEC); | |
3138 | if (!br_afspec) | |
3139 | goto nla_put_failure; | |
3140 | ||
1d460b98 | 3141 | if (nla_put_u16(skb, IFLA_BRIDGE_FLAGS, BRIDGE_FLAGS_SELF)) { |
815cccbf JF |
3142 | nla_nest_cancel(skb, br_afspec); |
3143 | goto nla_put_failure; | |
3144 | } | |
1d460b98 RP |
3145 | |
3146 | if (mode != BRIDGE_MODE_UNDEF) { | |
3147 | if (nla_put_u16(skb, IFLA_BRIDGE_MODE, mode)) { | |
3148 | nla_nest_cancel(skb, br_afspec); | |
3149 | goto nla_put_failure; | |
3150 | } | |
3151 | } | |
7d4f8d87 SF |
3152 | if (vlan_fill) { |
3153 | err = vlan_fill(skb, dev, filter_mask); | |
3154 | if (err) { | |
3155 | nla_nest_cancel(skb, br_afspec); | |
3156 | goto nla_put_failure; | |
3157 | } | |
3158 | } | |
815cccbf JF |
3159 | nla_nest_end(skb, br_afspec); |
3160 | ||
2c3c031c SF |
3161 | protinfo = nla_nest_start(skb, IFLA_PROTINFO | NLA_F_NESTED); |
3162 | if (!protinfo) | |
3163 | goto nla_put_failure; | |
3164 | ||
3165 | if (brport_nla_put_flag(skb, flags, mask, | |
3166 | IFLA_BRPORT_MODE, BR_HAIRPIN_MODE) || | |
3167 | brport_nla_put_flag(skb, flags, mask, | |
3168 | IFLA_BRPORT_GUARD, BR_BPDU_GUARD) || | |
3169 | brport_nla_put_flag(skb, flags, mask, | |
3170 | IFLA_BRPORT_FAST_LEAVE, | |
3171 | BR_MULTICAST_FAST_LEAVE) || | |
3172 | brport_nla_put_flag(skb, flags, mask, | |
3173 | IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK) || | |
3174 | brport_nla_put_flag(skb, flags, mask, | |
3175 | IFLA_BRPORT_LEARNING, BR_LEARNING) || | |
3176 | brport_nla_put_flag(skb, flags, mask, | |
3177 | IFLA_BRPORT_LEARNING_SYNC, BR_LEARNING_SYNC) || | |
3178 | brport_nla_put_flag(skb, flags, mask, | |
3179 | IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD) || | |
3180 | brport_nla_put_flag(skb, flags, mask, | |
3181 | IFLA_BRPORT_PROXYARP, BR_PROXYARP)) { | |
3182 | nla_nest_cancel(skb, protinfo); | |
3183 | goto nla_put_failure; | |
3184 | } | |
3185 | ||
3186 | nla_nest_end(skb, protinfo); | |
3187 | ||
053c095a JB |
3188 | nlmsg_end(skb, nlh); |
3189 | return 0; | |
815cccbf JF |
3190 | nla_put_failure: |
3191 | nlmsg_cancel(skb, nlh); | |
7d4f8d87 | 3192 | return err ? err : -EMSGSIZE; |
815cccbf | 3193 | } |
7d4f8d87 | 3194 | EXPORT_SYMBOL_GPL(ndo_dflt_bridge_getlink); |
815cccbf | 3195 | |
e5a55a89 JF |
3196 | static int rtnl_bridge_getlink(struct sk_buff *skb, struct netlink_callback *cb) |
3197 | { | |
3198 | struct net *net = sock_net(skb->sk); | |
3199 | struct net_device *dev; | |
3200 | int idx = 0; | |
3201 | u32 portid = NETLINK_CB(cb->skb).portid; | |
3202 | u32 seq = cb->nlh->nlmsg_seq; | |
6cbdceeb | 3203 | u32 filter_mask = 0; |
d64f69b0 | 3204 | int err; |
6cbdceeb | 3205 | |
aa68c20f TG |
3206 | if (nlmsg_len(cb->nlh) > sizeof(struct ifinfomsg)) { |
3207 | struct nlattr *extfilt; | |
3208 | ||
3209 | extfilt = nlmsg_find_attr(cb->nlh, sizeof(struct ifinfomsg), | |
3210 | IFLA_EXT_MASK); | |
3211 | if (extfilt) { | |
3212 | if (nla_len(extfilt) < sizeof(filter_mask)) | |
3213 | return -EINVAL; | |
3214 | ||
3215 | filter_mask = nla_get_u32(extfilt); | |
3216 | } | |
3217 | } | |
e5a55a89 JF |
3218 | |
3219 | rcu_read_lock(); | |
3220 | for_each_netdev_rcu(net, dev) { | |
3221 | const struct net_device_ops *ops = dev->netdev_ops; | |
898e5061 | 3222 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
e5a55a89 | 3223 | |
898e5061 | 3224 | if (br_dev && br_dev->netdev_ops->ndo_bridge_getlink) { |
d64f69b0 RP |
3225 | if (idx >= cb->args[0]) { |
3226 | err = br_dev->netdev_ops->ndo_bridge_getlink( | |
3227 | skb, portid, seq, dev, | |
3228 | filter_mask, NLM_F_MULTI); | |
3229 | if (err < 0 && err != -EOPNOTSUPP) | |
3230 | break; | |
3231 | } | |
25b1e679 | 3232 | idx++; |
e5a55a89 JF |
3233 | } |
3234 | ||
3235 | if (ops->ndo_bridge_getlink) { | |
d64f69b0 RP |
3236 | if (idx >= cb->args[0]) { |
3237 | err = ops->ndo_bridge_getlink(skb, portid, | |
3238 | seq, dev, | |
3239 | filter_mask, | |
3240 | NLM_F_MULTI); | |
3241 | if (err < 0 && err != -EOPNOTSUPP) | |
3242 | break; | |
3243 | } | |
25b1e679 | 3244 | idx++; |
e5a55a89 JF |
3245 | } |
3246 | } | |
3247 | rcu_read_unlock(); | |
3248 | cb->args[0] = idx; | |
3249 | ||
3250 | return skb->len; | |
3251 | } | |
3252 | ||
2469ffd7 JF |
3253 | static inline size_t bridge_nlmsg_size(void) |
3254 | { | |
3255 | return NLMSG_ALIGN(sizeof(struct ifinfomsg)) | |
3256 | + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */ | |
3257 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */ | |
3258 | + nla_total_size(sizeof(u32)) /* IFLA_MASTER */ | |
3259 | + nla_total_size(sizeof(u32)) /* IFLA_MTU */ | |
3260 | + nla_total_size(sizeof(u32)) /* IFLA_LINK */ | |
3261 | + nla_total_size(sizeof(u32)) /* IFLA_OPERSTATE */ | |
3262 | + nla_total_size(sizeof(u8)) /* IFLA_PROTINFO */ | |
3263 | + nla_total_size(sizeof(struct nlattr)) /* IFLA_AF_SPEC */ | |
3264 | + nla_total_size(sizeof(u16)) /* IFLA_BRIDGE_FLAGS */ | |
3265 | + nla_total_size(sizeof(u16)); /* IFLA_BRIDGE_MODE */ | |
3266 | } | |
3267 | ||
02dba438 | 3268 | static int rtnl_bridge_notify(struct net_device *dev) |
2469ffd7 JF |
3269 | { |
3270 | struct net *net = dev_net(dev); | |
2469ffd7 JF |
3271 | struct sk_buff *skb; |
3272 | int err = -EOPNOTSUPP; | |
3273 | ||
02dba438 RP |
3274 | if (!dev->netdev_ops->ndo_bridge_getlink) |
3275 | return 0; | |
3276 | ||
2469ffd7 JF |
3277 | skb = nlmsg_new(bridge_nlmsg_size(), GFP_ATOMIC); |
3278 | if (!skb) { | |
3279 | err = -ENOMEM; | |
3280 | goto errout; | |
3281 | } | |
3282 | ||
46c264da | 3283 | err = dev->netdev_ops->ndo_bridge_getlink(skb, 0, 0, dev, 0, 0); |
02dba438 RP |
3284 | if (err < 0) |
3285 | goto errout; | |
2469ffd7 | 3286 | |
59ccaaaa RP |
3287 | if (!skb->len) |
3288 | goto errout; | |
3289 | ||
2469ffd7 JF |
3290 | rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC); |
3291 | return 0; | |
3292 | errout: | |
3293 | WARN_ON(err == -EMSGSIZE); | |
3294 | kfree_skb(skb); | |
59ccaaaa RP |
3295 | if (err) |
3296 | rtnl_set_sk_err(net, RTNLGRP_LINK, err); | |
2469ffd7 JF |
3297 | return err; |
3298 | } | |
3299 | ||
661d2967 | 3300 | static int rtnl_bridge_setlink(struct sk_buff *skb, struct nlmsghdr *nlh) |
e5a55a89 JF |
3301 | { |
3302 | struct net *net = sock_net(skb->sk); | |
3303 | struct ifinfomsg *ifm; | |
3304 | struct net_device *dev; | |
2469ffd7 JF |
3305 | struct nlattr *br_spec, *attr = NULL; |
3306 | int rem, err = -EOPNOTSUPP; | |
4de8b413 | 3307 | u16 flags = 0; |
c38e01b8 | 3308 | bool have_flags = false; |
e5a55a89 JF |
3309 | |
3310 | if (nlmsg_len(nlh) < sizeof(*ifm)) | |
3311 | return -EINVAL; | |
3312 | ||
3313 | ifm = nlmsg_data(nlh); | |
3314 | if (ifm->ifi_family != AF_BRIDGE) | |
3315 | return -EPFNOSUPPORT; | |
3316 | ||
3317 | dev = __dev_get_by_index(net, ifm->ifi_index); | |
3318 | if (!dev) { | |
3319 | pr_info("PF_BRIDGE: RTM_SETLINK with unknown ifindex\n"); | |
3320 | return -ENODEV; | |
3321 | } | |
3322 | ||
2469ffd7 JF |
3323 | br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); |
3324 | if (br_spec) { | |
3325 | nla_for_each_nested(attr, br_spec, rem) { | |
3326 | if (nla_type(attr) == IFLA_BRIDGE_FLAGS) { | |
6e8d1c55 TG |
3327 | if (nla_len(attr) < sizeof(flags)) |
3328 | return -EINVAL; | |
3329 | ||
c38e01b8 | 3330 | have_flags = true; |
2469ffd7 JF |
3331 | flags = nla_get_u16(attr); |
3332 | break; | |
3333 | } | |
3334 | } | |
3335 | } | |
3336 | ||
3337 | if (!flags || (flags & BRIDGE_FLAGS_MASTER)) { | |
898e5061 JP |
3338 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
3339 | ||
3340 | if (!br_dev || !br_dev->netdev_ops->ndo_bridge_setlink) { | |
2469ffd7 JF |
3341 | err = -EOPNOTSUPP; |
3342 | goto out; | |
3343 | } | |
3344 | ||
add511b3 | 3345 | err = br_dev->netdev_ops->ndo_bridge_setlink(dev, nlh, flags); |
e5a55a89 JF |
3346 | if (err) |
3347 | goto out; | |
2469ffd7 JF |
3348 | |
3349 | flags &= ~BRIDGE_FLAGS_MASTER; | |
e5a55a89 JF |
3350 | } |
3351 | ||
2469ffd7 JF |
3352 | if ((flags & BRIDGE_FLAGS_SELF)) { |
3353 | if (!dev->netdev_ops->ndo_bridge_setlink) | |
3354 | err = -EOPNOTSUPP; | |
3355 | else | |
add511b3 RP |
3356 | err = dev->netdev_ops->ndo_bridge_setlink(dev, nlh, |
3357 | flags); | |
02dba438 | 3358 | if (!err) { |
2469ffd7 | 3359 | flags &= ~BRIDGE_FLAGS_SELF; |
02dba438 RP |
3360 | |
3361 | /* Generate event to notify upper layer of bridge | |
3362 | * change | |
3363 | */ | |
3364 | err = rtnl_bridge_notify(dev); | |
3365 | } | |
2469ffd7 | 3366 | } |
e5a55a89 | 3367 | |
c38e01b8 | 3368 | if (have_flags) |
2469ffd7 | 3369 | memcpy(nla_data(attr), &flags, sizeof(flags)); |
e5a55a89 JF |
3370 | out: |
3371 | return err; | |
3372 | } | |
3373 | ||
661d2967 | 3374 | static int rtnl_bridge_dellink(struct sk_buff *skb, struct nlmsghdr *nlh) |
407af329 VY |
3375 | { |
3376 | struct net *net = sock_net(skb->sk); | |
3377 | struct ifinfomsg *ifm; | |
3378 | struct net_device *dev; | |
3379 | struct nlattr *br_spec, *attr = NULL; | |
3380 | int rem, err = -EOPNOTSUPP; | |
4de8b413 | 3381 | u16 flags = 0; |
407af329 VY |
3382 | bool have_flags = false; |
3383 | ||
3384 | if (nlmsg_len(nlh) < sizeof(*ifm)) | |
3385 | return -EINVAL; | |
3386 | ||
3387 | ifm = nlmsg_data(nlh); | |
3388 | if (ifm->ifi_family != AF_BRIDGE) | |
3389 | return -EPFNOSUPPORT; | |
3390 | ||
3391 | dev = __dev_get_by_index(net, ifm->ifi_index); | |
3392 | if (!dev) { | |
3393 | pr_info("PF_BRIDGE: RTM_SETLINK with unknown ifindex\n"); | |
3394 | return -ENODEV; | |
3395 | } | |
3396 | ||
3397 | br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); | |
3398 | if (br_spec) { | |
3399 | nla_for_each_nested(attr, br_spec, rem) { | |
3400 | if (nla_type(attr) == IFLA_BRIDGE_FLAGS) { | |
6e8d1c55 TG |
3401 | if (nla_len(attr) < sizeof(flags)) |
3402 | return -EINVAL; | |
3403 | ||
407af329 VY |
3404 | have_flags = true; |
3405 | flags = nla_get_u16(attr); | |
3406 | break; | |
3407 | } | |
3408 | } | |
3409 | } | |
3410 | ||
407af329 VY |
3411 | if (!flags || (flags & BRIDGE_FLAGS_MASTER)) { |
3412 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); | |
3413 | ||
3414 | if (!br_dev || !br_dev->netdev_ops->ndo_bridge_dellink) { | |
3415 | err = -EOPNOTSUPP; | |
3416 | goto out; | |
3417 | } | |
3418 | ||
add511b3 | 3419 | err = br_dev->netdev_ops->ndo_bridge_dellink(dev, nlh, flags); |
407af329 VY |
3420 | if (err) |
3421 | goto out; | |
3422 | ||
3423 | flags &= ~BRIDGE_FLAGS_MASTER; | |
3424 | } | |
3425 | ||
3426 | if ((flags & BRIDGE_FLAGS_SELF)) { | |
3427 | if (!dev->netdev_ops->ndo_bridge_dellink) | |
3428 | err = -EOPNOTSUPP; | |
3429 | else | |
add511b3 RP |
3430 | err = dev->netdev_ops->ndo_bridge_dellink(dev, nlh, |
3431 | flags); | |
407af329 | 3432 | |
02dba438 | 3433 | if (!err) { |
407af329 | 3434 | flags &= ~BRIDGE_FLAGS_SELF; |
02dba438 RP |
3435 | |
3436 | /* Generate event to notify upper layer of bridge | |
3437 | * change | |
3438 | */ | |
3439 | err = rtnl_bridge_notify(dev); | |
3440 | } | |
407af329 VY |
3441 | } |
3442 | ||
3443 | if (have_flags) | |
3444 | memcpy(nla_data(attr), &flags, sizeof(flags)); | |
407af329 VY |
3445 | out: |
3446 | return err; | |
3447 | } | |
3448 | ||
e8872a25 NA |
3449 | static bool stats_attr_valid(unsigned int mask, int attrid, int idxattr) |
3450 | { | |
3451 | return (mask & IFLA_STATS_FILTER_BIT(attrid)) && | |
3452 | (!idxattr || idxattr == attrid); | |
3453 | } | |
3454 | ||
10c9ead9 RP |
3455 | static int rtnl_fill_statsinfo(struct sk_buff *skb, struct net_device *dev, |
3456 | int type, u32 pid, u32 seq, u32 change, | |
e8872a25 NA |
3457 | unsigned int flags, unsigned int filter_mask, |
3458 | int *idxattr, int *prividx) | |
10c9ead9 RP |
3459 | { |
3460 | struct if_stats_msg *ifsm; | |
3461 | struct nlmsghdr *nlh; | |
3462 | struct nlattr *attr; | |
e8872a25 | 3463 | int s_prividx = *prividx; |
10c9ead9 RP |
3464 | |
3465 | ASSERT_RTNL(); | |
3466 | ||
3467 | nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ifsm), flags); | |
3468 | if (!nlh) | |
3469 | return -EMSGSIZE; | |
3470 | ||
3471 | ifsm = nlmsg_data(nlh); | |
3472 | ifsm->ifindex = dev->ifindex; | |
3473 | ifsm->filter_mask = filter_mask; | |
3474 | ||
e8872a25 | 3475 | if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_64, *idxattr)) { |
10c9ead9 | 3476 | struct rtnl_link_stats64 *sp; |
10c9ead9 | 3477 | |
58414d32 ND |
3478 | attr = nla_reserve_64bit(skb, IFLA_STATS_LINK_64, |
3479 | sizeof(struct rtnl_link_stats64), | |
3480 | IFLA_STATS_UNSPEC); | |
10c9ead9 RP |
3481 | if (!attr) |
3482 | goto nla_put_failure; | |
3483 | ||
3484 | sp = nla_data(attr); | |
3485 | dev_get_stats(dev, sp); | |
3486 | } | |
3487 | ||
97a47fac NA |
3488 | if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_XSTATS, *idxattr)) { |
3489 | const struct rtnl_link_ops *ops = dev->rtnl_link_ops; | |
3490 | ||
3491 | if (ops && ops->fill_linkxstats) { | |
3492 | int err; | |
3493 | ||
3494 | *idxattr = IFLA_STATS_LINK_XSTATS; | |
3495 | attr = nla_nest_start(skb, | |
3496 | IFLA_STATS_LINK_XSTATS); | |
3497 | if (!attr) | |
3498 | goto nla_put_failure; | |
3499 | ||
3500 | err = ops->fill_linkxstats(skb, dev, prividx); | |
3501 | nla_nest_end(skb, attr); | |
3502 | if (err) | |
3503 | goto nla_put_failure; | |
3504 | *idxattr = 0; | |
3505 | } | |
3506 | } | |
3507 | ||
10c9ead9 RP |
3508 | nlmsg_end(skb, nlh); |
3509 | ||
3510 | return 0; | |
3511 | ||
3512 | nla_put_failure: | |
e8872a25 NA |
3513 | /* not a multi message or no progress mean a real error */ |
3514 | if (!(flags & NLM_F_MULTI) || s_prividx == *prividx) | |
3515 | nlmsg_cancel(skb, nlh); | |
3516 | else | |
3517 | nlmsg_end(skb, nlh); | |
10c9ead9 RP |
3518 | |
3519 | return -EMSGSIZE; | |
3520 | } | |
3521 | ||
3522 | static const struct nla_policy ifla_stats_policy[IFLA_STATS_MAX + 1] = { | |
3523 | [IFLA_STATS_LINK_64] = { .len = sizeof(struct rtnl_link_stats64) }, | |
3524 | }; | |
3525 | ||
3526 | static size_t if_nlmsg_stats_size(const struct net_device *dev, | |
3527 | u32 filter_mask) | |
3528 | { | |
3529 | size_t size = 0; | |
3530 | ||
e8872a25 | 3531 | if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_64, 0)) |
10c9ead9 RP |
3532 | size += nla_total_size_64bit(sizeof(struct rtnl_link_stats64)); |
3533 | ||
97a47fac NA |
3534 | if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_XSTATS, 0)) { |
3535 | const struct rtnl_link_ops *ops = dev->rtnl_link_ops; | |
3536 | ||
3537 | if (ops && ops->get_linkxstats_size) { | |
3538 | size += nla_total_size(ops->get_linkxstats_size(dev)); | |
3539 | /* for IFLA_STATS_LINK_XSTATS */ | |
3540 | size += nla_total_size(0); | |
3541 | } | |
3542 | } | |
3543 | ||
10c9ead9 RP |
3544 | return size; |
3545 | } | |
3546 | ||
3547 | static int rtnl_stats_get(struct sk_buff *skb, struct nlmsghdr *nlh) | |
3548 | { | |
3549 | struct net *net = sock_net(skb->sk); | |
10c9ead9 | 3550 | struct net_device *dev = NULL; |
e8872a25 NA |
3551 | int idxattr = 0, prividx = 0; |
3552 | struct if_stats_msg *ifsm; | |
10c9ead9 RP |
3553 | struct sk_buff *nskb; |
3554 | u32 filter_mask; | |
3555 | int err; | |
3556 | ||
3557 | ifsm = nlmsg_data(nlh); | |
3558 | if (ifsm->ifindex > 0) | |
3559 | dev = __dev_get_by_index(net, ifsm->ifindex); | |
3560 | else | |
3561 | return -EINVAL; | |
3562 | ||
3563 | if (!dev) | |
3564 | return -ENODEV; | |
3565 | ||
3566 | filter_mask = ifsm->filter_mask; | |
3567 | if (!filter_mask) | |
3568 | return -EINVAL; | |
3569 | ||
3570 | nskb = nlmsg_new(if_nlmsg_stats_size(dev, filter_mask), GFP_KERNEL); | |
3571 | if (!nskb) | |
3572 | return -ENOBUFS; | |
3573 | ||
3574 | err = rtnl_fill_statsinfo(nskb, dev, RTM_NEWSTATS, | |
3575 | NETLINK_CB(skb).portid, nlh->nlmsg_seq, 0, | |
e8872a25 | 3576 | 0, filter_mask, &idxattr, &prividx); |
10c9ead9 RP |
3577 | if (err < 0) { |
3578 | /* -EMSGSIZE implies BUG in if_nlmsg_stats_size */ | |
3579 | WARN_ON(err == -EMSGSIZE); | |
3580 | kfree_skb(nskb); | |
3581 | } else { | |
3582 | err = rtnl_unicast(nskb, net, NETLINK_CB(skb).portid); | |
3583 | } | |
3584 | ||
3585 | return err; | |
3586 | } | |
3587 | ||
3588 | static int rtnl_stats_dump(struct sk_buff *skb, struct netlink_callback *cb) | |
3589 | { | |
e8872a25 | 3590 | int h, s_h, err, s_idx, s_idxattr, s_prividx; |
10c9ead9 | 3591 | struct net *net = sock_net(skb->sk); |
e8872a25 | 3592 | unsigned int flags = NLM_F_MULTI; |
10c9ead9 | 3593 | struct if_stats_msg *ifsm; |
10c9ead9 | 3594 | struct hlist_head *head; |
e8872a25 | 3595 | struct net_device *dev; |
10c9ead9 | 3596 | u32 filter_mask = 0; |
e8872a25 | 3597 | int idx = 0; |
10c9ead9 RP |
3598 | |
3599 | s_h = cb->args[0]; | |
3600 | s_idx = cb->args[1]; | |
e8872a25 NA |
3601 | s_idxattr = cb->args[2]; |
3602 | s_prividx = cb->args[3]; | |
10c9ead9 RP |
3603 | |
3604 | cb->seq = net->dev_base_seq; | |
3605 | ||
3606 | ifsm = nlmsg_data(cb->nlh); | |
3607 | filter_mask = ifsm->filter_mask; | |
3608 | if (!filter_mask) | |
3609 | return -EINVAL; | |
3610 | ||
3611 | for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) { | |
3612 | idx = 0; | |
3613 | head = &net->dev_index_head[h]; | |
3614 | hlist_for_each_entry(dev, head, index_hlist) { | |
3615 | if (idx < s_idx) | |
3616 | goto cont; | |
3617 | err = rtnl_fill_statsinfo(skb, dev, RTM_NEWSTATS, | |
3618 | NETLINK_CB(cb->skb).portid, | |
3619 | cb->nlh->nlmsg_seq, 0, | |
e8872a25 NA |
3620 | flags, filter_mask, |
3621 | &s_idxattr, &s_prividx); | |
10c9ead9 RP |
3622 | /* If we ran out of room on the first message, |
3623 | * we're in trouble | |
3624 | */ | |
3625 | WARN_ON((err == -EMSGSIZE) && (skb->len == 0)); | |
3626 | ||
3627 | if (err < 0) | |
3628 | goto out; | |
e8872a25 NA |
3629 | s_prividx = 0; |
3630 | s_idxattr = 0; | |
10c9ead9 RP |
3631 | nl_dump_check_consistent(cb, nlmsg_hdr(skb)); |
3632 | cont: | |
3633 | idx++; | |
3634 | } | |
3635 | } | |
3636 | out: | |
e8872a25 NA |
3637 | cb->args[3] = s_prividx; |
3638 | cb->args[2] = s_idxattr; | |
10c9ead9 RP |
3639 | cb->args[1] = idx; |
3640 | cb->args[0] = h; | |
3641 | ||
3642 | return skb->len; | |
3643 | } | |
3644 | ||
1da177e4 LT |
3645 | /* Process one rtnetlink message. */ |
3646 | ||
1d00a4eb | 3647 | static int rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh) |
1da177e4 | 3648 | { |
3b1e0a65 | 3649 | struct net *net = sock_net(skb->sk); |
e2849863 | 3650 | rtnl_doit_func doit; |
617cfc75 | 3651 | int kind; |
1da177e4 LT |
3652 | int family; |
3653 | int type; | |
2907c35f | 3654 | int err; |
1da177e4 | 3655 | |
1da177e4 | 3656 | type = nlh->nlmsg_type; |
1da177e4 | 3657 | if (type > RTM_MAX) |
038890fe | 3658 | return -EOPNOTSUPP; |
1da177e4 LT |
3659 | |
3660 | type -= RTM_BASE; | |
3661 | ||
3662 | /* All the messages must have at least 1 byte length */ | |
573ce260 | 3663 | if (nlmsg_len(nlh) < sizeof(struct rtgenmsg)) |
1da177e4 LT |
3664 | return 0; |
3665 | ||
573ce260 | 3666 | family = ((struct rtgenmsg *)nlmsg_data(nlh))->rtgen_family; |
1da177e4 LT |
3667 | kind = type&3; |
3668 | ||
90f62cf3 | 3669 | if (kind != 2 && !netlink_net_capable(skb, CAP_NET_ADMIN)) |
1d00a4eb | 3670 | return -EPERM; |
1da177e4 | 3671 | |
b8f3ab42 | 3672 | if (kind == 2 && nlh->nlmsg_flags&NLM_F_DUMP) { |
97c53cac | 3673 | struct sock *rtnl; |
e2849863 | 3674 | rtnl_dumpit_func dumpit; |
c7ac8679 GR |
3675 | rtnl_calcit_func calcit; |
3676 | u16 min_dump_alloc = 0; | |
1da177e4 | 3677 | |
e2849863 TG |
3678 | dumpit = rtnl_get_dumpit(family, type); |
3679 | if (dumpit == NULL) | |
038890fe | 3680 | return -EOPNOTSUPP; |
c7ac8679 GR |
3681 | calcit = rtnl_get_calcit(family, type); |
3682 | if (calcit) | |
115c9b81 | 3683 | min_dump_alloc = calcit(skb, nlh); |
9ac4a169 | 3684 | |
2907c35f | 3685 | __rtnl_unlock(); |
97c53cac | 3686 | rtnl = net->rtnl; |
80d326fa PNA |
3687 | { |
3688 | struct netlink_dump_control c = { | |
3689 | .dump = dumpit, | |
3690 | .min_dump_alloc = min_dump_alloc, | |
3691 | }; | |
3692 | err = netlink_dump_start(rtnl, skb, nlh, &c); | |
3693 | } | |
2907c35f ED |
3694 | rtnl_lock(); |
3695 | return err; | |
1da177e4 LT |
3696 | } |
3697 | ||
e2849863 TG |
3698 | doit = rtnl_get_doit(family, type); |
3699 | if (doit == NULL) | |
038890fe | 3700 | return -EOPNOTSUPP; |
1da177e4 | 3701 | |
661d2967 | 3702 | return doit(skb, nlh); |
1da177e4 LT |
3703 | } |
3704 | ||
cd40b7d3 | 3705 | static void rtnetlink_rcv(struct sk_buff *skb) |
1da177e4 | 3706 | { |
cd40b7d3 DL |
3707 | rtnl_lock(); |
3708 | netlink_rcv_skb(skb, &rtnetlink_rcv_msg); | |
3709 | rtnl_unlock(); | |
1da177e4 LT |
3710 | } |
3711 | ||
1da177e4 LT |
3712 | static int rtnetlink_event(struct notifier_block *this, unsigned long event, void *ptr) |
3713 | { | |
351638e7 | 3714 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
e9dc8653 | 3715 | |
1da177e4 | 3716 | switch (event) { |
1da177e4 LT |
3717 | case NETDEV_UP: |
3718 | case NETDEV_DOWN: | |
10de05af | 3719 | case NETDEV_PRE_UP: |
d90a909e EB |
3720 | case NETDEV_POST_INIT: |
3721 | case NETDEV_REGISTER: | |
1da177e4 | 3722 | case NETDEV_CHANGE: |
755d0e77 | 3723 | case NETDEV_PRE_TYPE_CHANGE: |
1da177e4 | 3724 | case NETDEV_GOING_DOWN: |
a2835763 | 3725 | case NETDEV_UNREGISTER: |
0115e8e3 | 3726 | case NETDEV_UNREGISTER_FINAL: |
ac3d3f81 AW |
3727 | case NETDEV_RELEASE: |
3728 | case NETDEV_JOIN: | |
61bd3857 | 3729 | case NETDEV_BONDING_INFO: |
1da177e4 LT |
3730 | break; |
3731 | default: | |
7f294054 | 3732 | rtmsg_ifinfo(RTM_NEWLINK, dev, 0, GFP_KERNEL); |
1da177e4 LT |
3733 | break; |
3734 | } | |
3735 | return NOTIFY_DONE; | |
3736 | } | |
3737 | ||
3738 | static struct notifier_block rtnetlink_dev_notifier = { | |
3739 | .notifier_call = rtnetlink_event, | |
3740 | }; | |
3741 | ||
97c53cac | 3742 | |
2c8c1e72 | 3743 | static int __net_init rtnetlink_net_init(struct net *net) |
97c53cac DL |
3744 | { |
3745 | struct sock *sk; | |
a31f2d17 PNA |
3746 | struct netlink_kernel_cfg cfg = { |
3747 | .groups = RTNLGRP_MAX, | |
3748 | .input = rtnetlink_rcv, | |
3749 | .cb_mutex = &rtnl_mutex, | |
9785e10a | 3750 | .flags = NL_CFG_F_NONROOT_RECV, |
a31f2d17 PNA |
3751 | }; |
3752 | ||
9f00d977 | 3753 | sk = netlink_kernel_create(net, NETLINK_ROUTE, &cfg); |
97c53cac DL |
3754 | if (!sk) |
3755 | return -ENOMEM; | |
97c53cac DL |
3756 | net->rtnl = sk; |
3757 | return 0; | |
3758 | } | |
3759 | ||
2c8c1e72 | 3760 | static void __net_exit rtnetlink_net_exit(struct net *net) |
97c53cac | 3761 | { |
775516bf DL |
3762 | netlink_kernel_release(net->rtnl); |
3763 | net->rtnl = NULL; | |
97c53cac DL |
3764 | } |
3765 | ||
3766 | static struct pernet_operations rtnetlink_net_ops = { | |
3767 | .init = rtnetlink_net_init, | |
3768 | .exit = rtnetlink_net_exit, | |
3769 | }; | |
3770 | ||
1da177e4 LT |
3771 | void __init rtnetlink_init(void) |
3772 | { | |
97c53cac | 3773 | if (register_pernet_subsys(&rtnetlink_net_ops)) |
1da177e4 | 3774 | panic("rtnetlink_init: cannot initialize rtnetlink\n"); |
97c53cac | 3775 | |
1da177e4 | 3776 | register_netdevice_notifier(&rtnetlink_dev_notifier); |
340d17fc | 3777 | |
c7ac8679 GR |
3778 | rtnl_register(PF_UNSPEC, RTM_GETLINK, rtnl_getlink, |
3779 | rtnl_dump_ifinfo, rtnl_calcit); | |
3780 | rtnl_register(PF_UNSPEC, RTM_SETLINK, rtnl_setlink, NULL, NULL); | |
3781 | rtnl_register(PF_UNSPEC, RTM_NEWLINK, rtnl_newlink, NULL, NULL); | |
3782 | rtnl_register(PF_UNSPEC, RTM_DELLINK, rtnl_dellink, NULL, NULL); | |
687ad8cc | 3783 | |
c7ac8679 GR |
3784 | rtnl_register(PF_UNSPEC, RTM_GETADDR, NULL, rtnl_dump_all, NULL); |
3785 | rtnl_register(PF_UNSPEC, RTM_GETROUTE, NULL, rtnl_dump_all, NULL); | |
77162022 JF |
3786 | |
3787 | rtnl_register(PF_BRIDGE, RTM_NEWNEIGH, rtnl_fdb_add, NULL, NULL); | |
3788 | rtnl_register(PF_BRIDGE, RTM_DELNEIGH, rtnl_fdb_del, NULL, NULL); | |
3789 | rtnl_register(PF_BRIDGE, RTM_GETNEIGH, NULL, rtnl_fdb_dump, NULL); | |
e5a55a89 JF |
3790 | |
3791 | rtnl_register(PF_BRIDGE, RTM_GETLINK, NULL, rtnl_bridge_getlink, NULL); | |
407af329 | 3792 | rtnl_register(PF_BRIDGE, RTM_DELLINK, rtnl_bridge_dellink, NULL, NULL); |
e5a55a89 | 3793 | rtnl_register(PF_BRIDGE, RTM_SETLINK, rtnl_bridge_setlink, NULL, NULL); |
10c9ead9 RP |
3794 | |
3795 | rtnl_register(PF_UNSPEC, RTM_GETSTATS, rtnl_stats_get, rtnl_stats_dump, | |
3796 | NULL); | |
1da177e4 | 3797 | } |