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1da177e4 LT |
1 | /* |
2 | * INET An implementation of the TCP/IP protocol suite for the LINUX | |
3 | * operating system. INET is implemented using the BSD Socket | |
4 | * interface as the means of communication with the user level. | |
5 | * | |
6 | * Routing netlink socket interface: protocol independent part. | |
7 | * | |
8 | * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or | |
11 | * modify it under the terms of the GNU General Public License | |
12 | * as published by the Free Software Foundation; either version | |
13 | * 2 of the License, or (at your option) any later version. | |
14 | * | |
15 | * Fixes: | |
16 | * Vitaly E. Lavrov RTA_OK arithmetics was wrong. | |
17 | */ | |
18 | ||
1da177e4 LT |
19 | #include <linux/errno.h> |
20 | #include <linux/module.h> | |
21 | #include <linux/types.h> | |
22 | #include <linux/socket.h> | |
23 | #include <linux/kernel.h> | |
1da177e4 LT |
24 | #include <linux/timer.h> |
25 | #include <linux/string.h> | |
26 | #include <linux/sockios.h> | |
27 | #include <linux/net.h> | |
28 | #include <linux/fcntl.h> | |
29 | #include <linux/mm.h> | |
30 | #include <linux/slab.h> | |
31 | #include <linux/interrupt.h> | |
32 | #include <linux/capability.h> | |
33 | #include <linux/skbuff.h> | |
34 | #include <linux/init.h> | |
35 | #include <linux/security.h> | |
6756ae4b | 36 | #include <linux/mutex.h> |
1823730f | 37 | #include <linux/if_addr.h> |
77162022 | 38 | #include <linux/if_bridge.h> |
ebc08a6f | 39 | #include <linux/pci.h> |
77162022 | 40 | #include <linux/etherdevice.h> |
1da177e4 LT |
41 | |
42 | #include <asm/uaccess.h> | |
1da177e4 LT |
43 | |
44 | #include <linux/inet.h> | |
45 | #include <linux/netdevice.h> | |
46 | #include <net/ip.h> | |
47 | #include <net/protocol.h> | |
48 | #include <net/arp.h> | |
49 | #include <net/route.h> | |
50 | #include <net/udp.h> | |
51 | #include <net/sock.h> | |
52 | #include <net/pkt_sched.h> | |
14c0b97d | 53 | #include <net/fib_rules.h> |
e2849863 | 54 | #include <net/rtnetlink.h> |
30ffee84 | 55 | #include <net/net_namespace.h> |
1da177e4 | 56 | |
e0d087af | 57 | struct rtnl_link { |
e2849863 TG |
58 | rtnl_doit_func doit; |
59 | rtnl_dumpit_func dumpit; | |
c7ac8679 | 60 | rtnl_calcit_func calcit; |
e2849863 TG |
61 | }; |
62 | ||
6756ae4b | 63 | static DEFINE_MUTEX(rtnl_mutex); |
1da177e4 LT |
64 | |
65 | void rtnl_lock(void) | |
66 | { | |
6756ae4b | 67 | mutex_lock(&rtnl_mutex); |
1da177e4 | 68 | } |
e0d087af | 69 | EXPORT_SYMBOL(rtnl_lock); |
1da177e4 | 70 | |
6756ae4b | 71 | void __rtnl_unlock(void) |
1da177e4 | 72 | { |
6756ae4b | 73 | mutex_unlock(&rtnl_mutex); |
1da177e4 | 74 | } |
6756ae4b | 75 | |
1da177e4 LT |
76 | void rtnl_unlock(void) |
77 | { | |
58ec3b4d | 78 | /* This fellow will unlock it for us. */ |
1da177e4 LT |
79 | netdev_run_todo(); |
80 | } | |
e0d087af | 81 | EXPORT_SYMBOL(rtnl_unlock); |
1da177e4 | 82 | |
6756ae4b SH |
83 | int rtnl_trylock(void) |
84 | { | |
85 | return mutex_trylock(&rtnl_mutex); | |
86 | } | |
e0d087af | 87 | EXPORT_SYMBOL(rtnl_trylock); |
6756ae4b | 88 | |
c9c1014b PM |
89 | int rtnl_is_locked(void) |
90 | { | |
91 | return mutex_is_locked(&rtnl_mutex); | |
92 | } | |
e0d087af | 93 | EXPORT_SYMBOL(rtnl_is_locked); |
c9c1014b | 94 | |
a898def2 PM |
95 | #ifdef CONFIG_PROVE_LOCKING |
96 | int lockdep_rtnl_is_held(void) | |
97 | { | |
98 | return lockdep_is_held(&rtnl_mutex); | |
99 | } | |
100 | EXPORT_SYMBOL(lockdep_rtnl_is_held); | |
101 | #endif /* #ifdef CONFIG_PROVE_LOCKING */ | |
102 | ||
25239cee | 103 | static struct rtnl_link *rtnl_msg_handlers[RTNL_FAMILY_MAX + 1]; |
e2849863 TG |
104 | |
105 | static inline int rtm_msgindex(int msgtype) | |
106 | { | |
107 | int msgindex = msgtype - RTM_BASE; | |
108 | ||
109 | /* | |
110 | * msgindex < 0 implies someone tried to register a netlink | |
111 | * control code. msgindex >= RTM_NR_MSGTYPES may indicate that | |
112 | * the message type has not been added to linux/rtnetlink.h | |
113 | */ | |
114 | BUG_ON(msgindex < 0 || msgindex >= RTM_NR_MSGTYPES); | |
115 | ||
116 | return msgindex; | |
117 | } | |
118 | ||
119 | static rtnl_doit_func rtnl_get_doit(int protocol, int msgindex) | |
120 | { | |
121 | struct rtnl_link *tab; | |
122 | ||
25239cee | 123 | if (protocol <= RTNL_FAMILY_MAX) |
0f87b1dd PM |
124 | tab = rtnl_msg_handlers[protocol]; |
125 | else | |
126 | tab = NULL; | |
127 | ||
51057f2f | 128 | if (tab == NULL || tab[msgindex].doit == NULL) |
e2849863 TG |
129 | tab = rtnl_msg_handlers[PF_UNSPEC]; |
130 | ||
c80bbeae | 131 | return tab[msgindex].doit; |
e2849863 TG |
132 | } |
133 | ||
134 | static rtnl_dumpit_func rtnl_get_dumpit(int protocol, int msgindex) | |
135 | { | |
136 | struct rtnl_link *tab; | |
137 | ||
25239cee | 138 | if (protocol <= RTNL_FAMILY_MAX) |
0f87b1dd PM |
139 | tab = rtnl_msg_handlers[protocol]; |
140 | else | |
141 | tab = NULL; | |
142 | ||
51057f2f | 143 | if (tab == NULL || tab[msgindex].dumpit == NULL) |
e2849863 TG |
144 | tab = rtnl_msg_handlers[PF_UNSPEC]; |
145 | ||
c80bbeae | 146 | return tab[msgindex].dumpit; |
e2849863 TG |
147 | } |
148 | ||
c7ac8679 GR |
149 | static rtnl_calcit_func rtnl_get_calcit(int protocol, int msgindex) |
150 | { | |
151 | struct rtnl_link *tab; | |
152 | ||
153 | if (protocol <= RTNL_FAMILY_MAX) | |
154 | tab = rtnl_msg_handlers[protocol]; | |
155 | else | |
156 | tab = NULL; | |
157 | ||
158 | if (tab == NULL || tab[msgindex].calcit == NULL) | |
159 | tab = rtnl_msg_handlers[PF_UNSPEC]; | |
160 | ||
c80bbeae | 161 | return tab[msgindex].calcit; |
c7ac8679 GR |
162 | } |
163 | ||
e2849863 TG |
164 | /** |
165 | * __rtnl_register - Register a rtnetlink message type | |
166 | * @protocol: Protocol family or PF_UNSPEC | |
167 | * @msgtype: rtnetlink message type | |
168 | * @doit: Function pointer called for each request message | |
169 | * @dumpit: Function pointer called for each dump request (NLM_F_DUMP) message | |
c7ac8679 | 170 | * @calcit: Function pointer to calc size of dump message |
e2849863 TG |
171 | * |
172 | * Registers the specified function pointers (at least one of them has | |
173 | * to be non-NULL) to be called whenever a request message for the | |
174 | * specified protocol family and message type is received. | |
175 | * | |
176 | * The special protocol family PF_UNSPEC may be used to define fallback | |
177 | * function pointers for the case when no entry for the specific protocol | |
178 | * family exists. | |
179 | * | |
180 | * Returns 0 on success or a negative error code. | |
181 | */ | |
182 | int __rtnl_register(int protocol, int msgtype, | |
c7ac8679 GR |
183 | rtnl_doit_func doit, rtnl_dumpit_func dumpit, |
184 | rtnl_calcit_func calcit) | |
e2849863 TG |
185 | { |
186 | struct rtnl_link *tab; | |
187 | int msgindex; | |
188 | ||
25239cee | 189 | BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX); |
e2849863 TG |
190 | msgindex = rtm_msgindex(msgtype); |
191 | ||
192 | tab = rtnl_msg_handlers[protocol]; | |
193 | if (tab == NULL) { | |
194 | tab = kcalloc(RTM_NR_MSGTYPES, sizeof(*tab), GFP_KERNEL); | |
195 | if (tab == NULL) | |
196 | return -ENOBUFS; | |
197 | ||
198 | rtnl_msg_handlers[protocol] = tab; | |
199 | } | |
200 | ||
201 | if (doit) | |
202 | tab[msgindex].doit = doit; | |
203 | ||
204 | if (dumpit) | |
205 | tab[msgindex].dumpit = dumpit; | |
206 | ||
c7ac8679 GR |
207 | if (calcit) |
208 | tab[msgindex].calcit = calcit; | |
209 | ||
e2849863 TG |
210 | return 0; |
211 | } | |
e2849863 TG |
212 | EXPORT_SYMBOL_GPL(__rtnl_register); |
213 | ||
214 | /** | |
215 | * rtnl_register - Register a rtnetlink message type | |
216 | * | |
217 | * Identical to __rtnl_register() but panics on failure. This is useful | |
218 | * as failure of this function is very unlikely, it can only happen due | |
219 | * to lack of memory when allocating the chain to store all message | |
220 | * handlers for a protocol. Meant for use in init functions where lack | |
25985edc | 221 | * of memory implies no sense in continuing. |
e2849863 TG |
222 | */ |
223 | void rtnl_register(int protocol, int msgtype, | |
c7ac8679 GR |
224 | rtnl_doit_func doit, rtnl_dumpit_func dumpit, |
225 | rtnl_calcit_func calcit) | |
e2849863 | 226 | { |
c7ac8679 | 227 | if (__rtnl_register(protocol, msgtype, doit, dumpit, calcit) < 0) |
e2849863 TG |
228 | panic("Unable to register rtnetlink message handler, " |
229 | "protocol = %d, message type = %d\n", | |
230 | protocol, msgtype); | |
231 | } | |
e2849863 TG |
232 | EXPORT_SYMBOL_GPL(rtnl_register); |
233 | ||
234 | /** | |
235 | * rtnl_unregister - Unregister a rtnetlink message type | |
236 | * @protocol: Protocol family or PF_UNSPEC | |
237 | * @msgtype: rtnetlink message type | |
238 | * | |
239 | * Returns 0 on success or a negative error code. | |
240 | */ | |
241 | int rtnl_unregister(int protocol, int msgtype) | |
242 | { | |
243 | int msgindex; | |
244 | ||
25239cee | 245 | BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX); |
e2849863 TG |
246 | msgindex = rtm_msgindex(msgtype); |
247 | ||
248 | if (rtnl_msg_handlers[protocol] == NULL) | |
249 | return -ENOENT; | |
250 | ||
251 | rtnl_msg_handlers[protocol][msgindex].doit = NULL; | |
252 | rtnl_msg_handlers[protocol][msgindex].dumpit = NULL; | |
253 | ||
254 | return 0; | |
255 | } | |
e2849863 TG |
256 | EXPORT_SYMBOL_GPL(rtnl_unregister); |
257 | ||
258 | /** | |
259 | * rtnl_unregister_all - Unregister all rtnetlink message type of a protocol | |
260 | * @protocol : Protocol family or PF_UNSPEC | |
261 | * | |
262 | * Identical to calling rtnl_unregster() for all registered message types | |
263 | * of a certain protocol family. | |
264 | */ | |
265 | void rtnl_unregister_all(int protocol) | |
266 | { | |
25239cee | 267 | BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX); |
e2849863 TG |
268 | |
269 | kfree(rtnl_msg_handlers[protocol]); | |
270 | rtnl_msg_handlers[protocol] = NULL; | |
271 | } | |
e2849863 | 272 | EXPORT_SYMBOL_GPL(rtnl_unregister_all); |
1da177e4 | 273 | |
38f7b870 PM |
274 | static LIST_HEAD(link_ops); |
275 | ||
c63044f0 ED |
276 | static const struct rtnl_link_ops *rtnl_link_ops_get(const char *kind) |
277 | { | |
278 | const struct rtnl_link_ops *ops; | |
279 | ||
280 | list_for_each_entry(ops, &link_ops, list) { | |
281 | if (!strcmp(ops->kind, kind)) | |
282 | return ops; | |
283 | } | |
284 | return NULL; | |
285 | } | |
286 | ||
38f7b870 PM |
287 | /** |
288 | * __rtnl_link_register - Register rtnl_link_ops with rtnetlink. | |
289 | * @ops: struct rtnl_link_ops * to register | |
290 | * | |
291 | * The caller must hold the rtnl_mutex. This function should be used | |
292 | * by drivers that create devices during module initialization. It | |
293 | * must be called before registering the devices. | |
294 | * | |
295 | * Returns 0 on success or a negative error code. | |
296 | */ | |
297 | int __rtnl_link_register(struct rtnl_link_ops *ops) | |
298 | { | |
c63044f0 ED |
299 | if (rtnl_link_ops_get(ops->kind)) |
300 | return -EEXIST; | |
301 | ||
2d85cba2 | 302 | if (!ops->dellink) |
23289a37 | 303 | ops->dellink = unregister_netdevice_queue; |
2d85cba2 | 304 | |
38f7b870 PM |
305 | list_add_tail(&ops->list, &link_ops); |
306 | return 0; | |
307 | } | |
38f7b870 PM |
308 | EXPORT_SYMBOL_GPL(__rtnl_link_register); |
309 | ||
310 | /** | |
311 | * rtnl_link_register - Register rtnl_link_ops with rtnetlink. | |
312 | * @ops: struct rtnl_link_ops * to register | |
313 | * | |
314 | * Returns 0 on success or a negative error code. | |
315 | */ | |
316 | int rtnl_link_register(struct rtnl_link_ops *ops) | |
317 | { | |
318 | int err; | |
319 | ||
320 | rtnl_lock(); | |
321 | err = __rtnl_link_register(ops); | |
322 | rtnl_unlock(); | |
323 | return err; | |
324 | } | |
38f7b870 PM |
325 | EXPORT_SYMBOL_GPL(rtnl_link_register); |
326 | ||
669f87ba PE |
327 | static void __rtnl_kill_links(struct net *net, struct rtnl_link_ops *ops) |
328 | { | |
329 | struct net_device *dev; | |
23289a37 ED |
330 | LIST_HEAD(list_kill); |
331 | ||
669f87ba | 332 | for_each_netdev(net, dev) { |
23289a37 ED |
333 | if (dev->rtnl_link_ops == ops) |
334 | ops->dellink(dev, &list_kill); | |
669f87ba | 335 | } |
23289a37 | 336 | unregister_netdevice_many(&list_kill); |
669f87ba PE |
337 | } |
338 | ||
38f7b870 PM |
339 | /** |
340 | * __rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink. | |
341 | * @ops: struct rtnl_link_ops * to unregister | |
342 | * | |
2d85cba2 | 343 | * The caller must hold the rtnl_mutex. |
38f7b870 PM |
344 | */ |
345 | void __rtnl_link_unregister(struct rtnl_link_ops *ops) | |
346 | { | |
881d966b | 347 | struct net *net; |
2d85cba2 | 348 | |
881d966b | 349 | for_each_net(net) { |
669f87ba | 350 | __rtnl_kill_links(net, ops); |
2d85cba2 | 351 | } |
38f7b870 PM |
352 | list_del(&ops->list); |
353 | } | |
38f7b870 PM |
354 | EXPORT_SYMBOL_GPL(__rtnl_link_unregister); |
355 | ||
356 | /** | |
357 | * rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink. | |
358 | * @ops: struct rtnl_link_ops * to unregister | |
359 | */ | |
360 | void rtnl_link_unregister(struct rtnl_link_ops *ops) | |
361 | { | |
362 | rtnl_lock(); | |
363 | __rtnl_link_unregister(ops); | |
364 | rtnl_unlock(); | |
365 | } | |
38f7b870 PM |
366 | EXPORT_SYMBOL_GPL(rtnl_link_unregister); |
367 | ||
ba7d49b1 JP |
368 | static size_t rtnl_link_get_slave_info_data_size(const struct net_device *dev) |
369 | { | |
370 | struct net_device *master_dev; | |
371 | const struct rtnl_link_ops *ops; | |
372 | ||
373 | master_dev = netdev_master_upper_dev_get((struct net_device *) dev); | |
374 | if (!master_dev) | |
375 | return 0; | |
376 | ops = master_dev->rtnl_link_ops; | |
6049f253 | 377 | if (!ops || !ops->get_slave_size) |
ba7d49b1 JP |
378 | return 0; |
379 | /* IFLA_INFO_SLAVE_DATA + nested data */ | |
380 | return nla_total_size(sizeof(struct nlattr)) + | |
381 | ops->get_slave_size(master_dev, dev); | |
382 | } | |
383 | ||
38f7b870 PM |
384 | static size_t rtnl_link_get_size(const struct net_device *dev) |
385 | { | |
386 | const struct rtnl_link_ops *ops = dev->rtnl_link_ops; | |
387 | size_t size; | |
388 | ||
389 | if (!ops) | |
390 | return 0; | |
391 | ||
369cf77a TG |
392 | size = nla_total_size(sizeof(struct nlattr)) + /* IFLA_LINKINFO */ |
393 | nla_total_size(strlen(ops->kind) + 1); /* IFLA_INFO_KIND */ | |
38f7b870 PM |
394 | |
395 | if (ops->get_size) | |
396 | /* IFLA_INFO_DATA + nested data */ | |
369cf77a | 397 | size += nla_total_size(sizeof(struct nlattr)) + |
38f7b870 PM |
398 | ops->get_size(dev); |
399 | ||
400 | if (ops->get_xstats_size) | |
369cf77a TG |
401 | /* IFLA_INFO_XSTATS */ |
402 | size += nla_total_size(ops->get_xstats_size(dev)); | |
38f7b870 | 403 | |
ba7d49b1 JP |
404 | size += rtnl_link_get_slave_info_data_size(dev); |
405 | ||
38f7b870 PM |
406 | return size; |
407 | } | |
408 | ||
f8ff182c TG |
409 | static LIST_HEAD(rtnl_af_ops); |
410 | ||
411 | static const struct rtnl_af_ops *rtnl_af_lookup(const int family) | |
412 | { | |
413 | const struct rtnl_af_ops *ops; | |
414 | ||
415 | list_for_each_entry(ops, &rtnl_af_ops, list) { | |
416 | if (ops->family == family) | |
417 | return ops; | |
418 | } | |
419 | ||
420 | return NULL; | |
421 | } | |
422 | ||
f8ff182c TG |
423 | /** |
424 | * rtnl_af_register - Register rtnl_af_ops with rtnetlink. | |
425 | * @ops: struct rtnl_af_ops * to register | |
426 | * | |
427 | * Returns 0 on success or a negative error code. | |
428 | */ | |
3678a9d8 | 429 | void rtnl_af_register(struct rtnl_af_ops *ops) |
f8ff182c | 430 | { |
f8ff182c | 431 | rtnl_lock(); |
3678a9d8 | 432 | list_add_tail(&ops->list, &rtnl_af_ops); |
f8ff182c | 433 | rtnl_unlock(); |
f8ff182c TG |
434 | } |
435 | EXPORT_SYMBOL_GPL(rtnl_af_register); | |
436 | ||
437 | /** | |
438 | * __rtnl_af_unregister - Unregister rtnl_af_ops from rtnetlink. | |
439 | * @ops: struct rtnl_af_ops * to unregister | |
440 | * | |
441 | * The caller must hold the rtnl_mutex. | |
442 | */ | |
443 | void __rtnl_af_unregister(struct rtnl_af_ops *ops) | |
444 | { | |
445 | list_del(&ops->list); | |
446 | } | |
447 | EXPORT_SYMBOL_GPL(__rtnl_af_unregister); | |
448 | ||
449 | /** | |
450 | * rtnl_af_unregister - Unregister rtnl_af_ops from rtnetlink. | |
451 | * @ops: struct rtnl_af_ops * to unregister | |
452 | */ | |
453 | void rtnl_af_unregister(struct rtnl_af_ops *ops) | |
454 | { | |
455 | rtnl_lock(); | |
456 | __rtnl_af_unregister(ops); | |
457 | rtnl_unlock(); | |
458 | } | |
459 | EXPORT_SYMBOL_GPL(rtnl_af_unregister); | |
460 | ||
461 | static size_t rtnl_link_get_af_size(const struct net_device *dev) | |
462 | { | |
463 | struct rtnl_af_ops *af_ops; | |
464 | size_t size; | |
465 | ||
466 | /* IFLA_AF_SPEC */ | |
467 | size = nla_total_size(sizeof(struct nlattr)); | |
468 | ||
469 | list_for_each_entry(af_ops, &rtnl_af_ops, list) { | |
470 | if (af_ops->get_link_af_size) { | |
471 | /* AF_* + nested data */ | |
472 | size += nla_total_size(sizeof(struct nlattr)) + | |
473 | af_ops->get_link_af_size(dev); | |
474 | } | |
475 | } | |
476 | ||
477 | return size; | |
478 | } | |
479 | ||
ba7d49b1 | 480 | static bool rtnl_have_link_slave_info(const struct net_device *dev) |
38f7b870 | 481 | { |
ba7d49b1 | 482 | struct net_device *master_dev; |
38f7b870 | 483 | |
ba7d49b1 | 484 | master_dev = netdev_master_upper_dev_get((struct net_device *) dev); |
813f020c | 485 | if (master_dev && master_dev->rtnl_link_ops) |
ba7d49b1 JP |
486 | return true; |
487 | return false; | |
488 | } | |
489 | ||
490 | static int rtnl_link_slave_info_fill(struct sk_buff *skb, | |
491 | const struct net_device *dev) | |
492 | { | |
493 | struct net_device *master_dev; | |
494 | const struct rtnl_link_ops *ops; | |
495 | struct nlattr *slave_data; | |
496 | int err; | |
38f7b870 | 497 | |
ba7d49b1 JP |
498 | master_dev = netdev_master_upper_dev_get((struct net_device *) dev); |
499 | if (!master_dev) | |
500 | return 0; | |
501 | ops = master_dev->rtnl_link_ops; | |
502 | if (!ops) | |
503 | return 0; | |
504 | if (nla_put_string(skb, IFLA_INFO_SLAVE_KIND, ops->kind) < 0) | |
505 | return -EMSGSIZE; | |
506 | if (ops->fill_slave_info) { | |
507 | slave_data = nla_nest_start(skb, IFLA_INFO_SLAVE_DATA); | |
508 | if (!slave_data) | |
509 | return -EMSGSIZE; | |
510 | err = ops->fill_slave_info(skb, master_dev, dev); | |
511 | if (err < 0) | |
512 | goto err_cancel_slave_data; | |
513 | nla_nest_end(skb, slave_data); | |
514 | } | |
515 | return 0; | |
516 | ||
517 | err_cancel_slave_data: | |
518 | nla_nest_cancel(skb, slave_data); | |
519 | return err; | |
520 | } | |
521 | ||
522 | static int rtnl_link_info_fill(struct sk_buff *skb, | |
523 | const struct net_device *dev) | |
524 | { | |
525 | const struct rtnl_link_ops *ops = dev->rtnl_link_ops; | |
526 | struct nlattr *data; | |
527 | int err; | |
528 | ||
529 | if (!ops) | |
530 | return 0; | |
38f7b870 | 531 | if (nla_put_string(skb, IFLA_INFO_KIND, ops->kind) < 0) |
ba7d49b1 | 532 | return -EMSGSIZE; |
38f7b870 PM |
533 | if (ops->fill_xstats) { |
534 | err = ops->fill_xstats(skb, dev); | |
535 | if (err < 0) | |
ba7d49b1 | 536 | return err; |
38f7b870 PM |
537 | } |
538 | if (ops->fill_info) { | |
539 | data = nla_nest_start(skb, IFLA_INFO_DATA); | |
ba7d49b1 JP |
540 | if (data == NULL) |
541 | return -EMSGSIZE; | |
38f7b870 PM |
542 | err = ops->fill_info(skb, dev); |
543 | if (err < 0) | |
544 | goto err_cancel_data; | |
545 | nla_nest_end(skb, data); | |
546 | } | |
38f7b870 PM |
547 | return 0; |
548 | ||
549 | err_cancel_data: | |
550 | nla_nest_cancel(skb, data); | |
ba7d49b1 JP |
551 | return err; |
552 | } | |
553 | ||
554 | static int rtnl_link_fill(struct sk_buff *skb, const struct net_device *dev) | |
555 | { | |
556 | struct nlattr *linkinfo; | |
557 | int err = -EMSGSIZE; | |
558 | ||
559 | linkinfo = nla_nest_start(skb, IFLA_LINKINFO); | |
560 | if (linkinfo == NULL) | |
561 | goto out; | |
562 | ||
563 | err = rtnl_link_info_fill(skb, dev); | |
564 | if (err < 0) | |
565 | goto err_cancel_link; | |
566 | ||
567 | err = rtnl_link_slave_info_fill(skb, dev); | |
568 | if (err < 0) | |
569 | goto err_cancel_link; | |
570 | ||
571 | nla_nest_end(skb, linkinfo); | |
572 | return 0; | |
573 | ||
38f7b870 PM |
574 | err_cancel_link: |
575 | nla_nest_cancel(skb, linkinfo); | |
576 | out: | |
577 | return err; | |
578 | } | |
579 | ||
95c96174 | 580 | int rtnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, unsigned int group, int echo) |
1da177e4 | 581 | { |
97c53cac | 582 | struct sock *rtnl = net->rtnl; |
1da177e4 LT |
583 | int err = 0; |
584 | ||
ac6d439d | 585 | NETLINK_CB(skb).dst_group = group; |
1da177e4 LT |
586 | if (echo) |
587 | atomic_inc(&skb->users); | |
588 | netlink_broadcast(rtnl, skb, pid, group, GFP_KERNEL); | |
589 | if (echo) | |
590 | err = netlink_unicast(rtnl, skb, pid, MSG_DONTWAIT); | |
591 | return err; | |
592 | } | |
593 | ||
97c53cac | 594 | int rtnl_unicast(struct sk_buff *skb, struct net *net, u32 pid) |
2942e900 | 595 | { |
97c53cac DL |
596 | struct sock *rtnl = net->rtnl; |
597 | ||
2942e900 TG |
598 | return nlmsg_unicast(rtnl, skb, pid); |
599 | } | |
e0d087af | 600 | EXPORT_SYMBOL(rtnl_unicast); |
2942e900 | 601 | |
1ce85fe4 PNA |
602 | void rtnl_notify(struct sk_buff *skb, struct net *net, u32 pid, u32 group, |
603 | struct nlmsghdr *nlh, gfp_t flags) | |
97676b6b | 604 | { |
97c53cac | 605 | struct sock *rtnl = net->rtnl; |
97676b6b TG |
606 | int report = 0; |
607 | ||
608 | if (nlh) | |
609 | report = nlmsg_report(nlh); | |
610 | ||
1ce85fe4 | 611 | nlmsg_notify(rtnl, skb, pid, group, report, flags); |
97676b6b | 612 | } |
e0d087af | 613 | EXPORT_SYMBOL(rtnl_notify); |
97676b6b | 614 | |
97c53cac | 615 | void rtnl_set_sk_err(struct net *net, u32 group, int error) |
97676b6b | 616 | { |
97c53cac DL |
617 | struct sock *rtnl = net->rtnl; |
618 | ||
97676b6b TG |
619 | netlink_set_err(rtnl, 0, group, error); |
620 | } | |
e0d087af | 621 | EXPORT_SYMBOL(rtnl_set_sk_err); |
97676b6b | 622 | |
1da177e4 LT |
623 | int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics) |
624 | { | |
2d7202bf TG |
625 | struct nlattr *mx; |
626 | int i, valid = 0; | |
627 | ||
628 | mx = nla_nest_start(skb, RTA_METRICS); | |
629 | if (mx == NULL) | |
630 | return -ENOBUFS; | |
631 | ||
632 | for (i = 0; i < RTAX_MAX; i++) { | |
633 | if (metrics[i]) { | |
634 | valid++; | |
a6574349 DM |
635 | if (nla_put_u32(skb, i+1, metrics[i])) |
636 | goto nla_put_failure; | |
2d7202bf | 637 | } |
1da177e4 | 638 | } |
1da177e4 | 639 | |
a57d27fc DM |
640 | if (!valid) { |
641 | nla_nest_cancel(skb, mx); | |
642 | return 0; | |
643 | } | |
2d7202bf TG |
644 | |
645 | return nla_nest_end(skb, mx); | |
646 | ||
647 | nla_put_failure: | |
bc3ed28c TG |
648 | nla_nest_cancel(skb, mx); |
649 | return -EMSGSIZE; | |
1da177e4 | 650 | } |
e0d087af | 651 | EXPORT_SYMBOL(rtnetlink_put_metrics); |
1da177e4 | 652 | |
e3703b3d | 653 | int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst, u32 id, |
87a50699 | 654 | long expires, u32 error) |
e3703b3d TG |
655 | { |
656 | struct rta_cacheinfo ci = { | |
a399a805 | 657 | .rta_lastuse = jiffies_delta_to_clock_t(jiffies - dst->lastuse), |
e3703b3d TG |
658 | .rta_used = dst->__use, |
659 | .rta_clntref = atomic_read(&(dst->__refcnt)), | |
660 | .rta_error = error, | |
661 | .rta_id = id, | |
e3703b3d TG |
662 | }; |
663 | ||
8253947e LW |
664 | if (expires) { |
665 | unsigned long clock; | |
e3703b3d | 666 | |
8253947e LW |
667 | clock = jiffies_to_clock_t(abs(expires)); |
668 | clock = min_t(unsigned long, clock, INT_MAX); | |
669 | ci.rta_expires = (expires > 0) ? clock : -clock; | |
670 | } | |
e3703b3d TG |
671 | return nla_put(skb, RTA_CACHEINFO, sizeof(ci), &ci); |
672 | } | |
e3703b3d | 673 | EXPORT_SYMBOL_GPL(rtnl_put_cacheinfo); |
1da177e4 | 674 | |
93b2d4a2 | 675 | static void set_operstate(struct net_device *dev, unsigned char transition) |
b00055aa SR |
676 | { |
677 | unsigned char operstate = dev->operstate; | |
678 | ||
e0d087af | 679 | switch (transition) { |
b00055aa SR |
680 | case IF_OPER_UP: |
681 | if ((operstate == IF_OPER_DORMANT || | |
682 | operstate == IF_OPER_UNKNOWN) && | |
683 | !netif_dormant(dev)) | |
684 | operstate = IF_OPER_UP; | |
685 | break; | |
686 | ||
687 | case IF_OPER_DORMANT: | |
688 | if (operstate == IF_OPER_UP || | |
689 | operstate == IF_OPER_UNKNOWN) | |
690 | operstate = IF_OPER_DORMANT; | |
691 | break; | |
3ff50b79 | 692 | } |
b00055aa SR |
693 | |
694 | if (dev->operstate != operstate) { | |
695 | write_lock_bh(&dev_base_lock); | |
696 | dev->operstate = operstate; | |
697 | write_unlock_bh(&dev_base_lock); | |
93b2d4a2 DM |
698 | netdev_state_change(dev); |
699 | } | |
b00055aa SR |
700 | } |
701 | ||
b1beb681 JB |
702 | static unsigned int rtnl_dev_get_flags(const struct net_device *dev) |
703 | { | |
704 | return (dev->flags & ~(IFF_PROMISC | IFF_ALLMULTI)) | | |
705 | (dev->gflags & (IFF_PROMISC | IFF_ALLMULTI)); | |
706 | } | |
707 | ||
3729d502 PM |
708 | static unsigned int rtnl_dev_combine_flags(const struct net_device *dev, |
709 | const struct ifinfomsg *ifm) | |
710 | { | |
711 | unsigned int flags = ifm->ifi_flags; | |
712 | ||
713 | /* bugwards compatibility: ifi_change == 0 is treated as ~0 */ | |
714 | if (ifm->ifi_change) | |
715 | flags = (flags & ifm->ifi_change) | | |
b1beb681 | 716 | (rtnl_dev_get_flags(dev) & ~ifm->ifi_change); |
3729d502 PM |
717 | |
718 | return flags; | |
719 | } | |
720 | ||
b60c5115 | 721 | static void copy_rtnl_link_stats(struct rtnl_link_stats *a, |
be1f3c2c | 722 | const struct rtnl_link_stats64 *b) |
1da177e4 | 723 | { |
b60c5115 TG |
724 | a->rx_packets = b->rx_packets; |
725 | a->tx_packets = b->tx_packets; | |
726 | a->rx_bytes = b->rx_bytes; | |
727 | a->tx_bytes = b->tx_bytes; | |
728 | a->rx_errors = b->rx_errors; | |
729 | a->tx_errors = b->tx_errors; | |
730 | a->rx_dropped = b->rx_dropped; | |
731 | a->tx_dropped = b->tx_dropped; | |
732 | ||
733 | a->multicast = b->multicast; | |
734 | a->collisions = b->collisions; | |
735 | ||
736 | a->rx_length_errors = b->rx_length_errors; | |
737 | a->rx_over_errors = b->rx_over_errors; | |
738 | a->rx_crc_errors = b->rx_crc_errors; | |
739 | a->rx_frame_errors = b->rx_frame_errors; | |
740 | a->rx_fifo_errors = b->rx_fifo_errors; | |
741 | a->rx_missed_errors = b->rx_missed_errors; | |
742 | ||
743 | a->tx_aborted_errors = b->tx_aborted_errors; | |
744 | a->tx_carrier_errors = b->tx_carrier_errors; | |
745 | a->tx_fifo_errors = b->tx_fifo_errors; | |
746 | a->tx_heartbeat_errors = b->tx_heartbeat_errors; | |
747 | a->tx_window_errors = b->tx_window_errors; | |
748 | ||
749 | a->rx_compressed = b->rx_compressed; | |
750 | a->tx_compressed = b->tx_compressed; | |
10708f37 JE |
751 | } |
752 | ||
be1f3c2c | 753 | static void copy_rtnl_link_stats64(void *v, const struct rtnl_link_stats64 *b) |
10708f37 | 754 | { |
afdcba37 | 755 | memcpy(v, b, sizeof(*b)); |
10708f37 | 756 | } |
1da177e4 | 757 | |
c02db8c6 | 758 | /* All VF info */ |
115c9b81 GR |
759 | static inline int rtnl_vfinfo_size(const struct net_device *dev, |
760 | u32 ext_filter_mask) | |
ebc08a6f | 761 | { |
115c9b81 GR |
762 | if (dev->dev.parent && dev_is_pci(dev->dev.parent) && |
763 | (ext_filter_mask & RTEXT_FILTER_VF)) { | |
c02db8c6 | 764 | int num_vfs = dev_num_vf(dev->dev.parent); |
045de01a SF |
765 | size_t size = nla_total_size(sizeof(struct nlattr)); |
766 | size += nla_total_size(num_vfs * sizeof(struct nlattr)); | |
767 | size += num_vfs * | |
768 | (nla_total_size(sizeof(struct ifla_vf_mac)) + | |
769 | nla_total_size(sizeof(struct ifla_vf_vlan)) + | |
5f8444a3 GR |
770 | nla_total_size(sizeof(struct ifla_vf_tx_rate)) + |
771 | nla_total_size(sizeof(struct ifla_vf_spoofchk))); | |
c02db8c6 CW |
772 | return size; |
773 | } else | |
ebc08a6f WM |
774 | return 0; |
775 | } | |
776 | ||
57b61080 SF |
777 | static size_t rtnl_port_size(const struct net_device *dev) |
778 | { | |
779 | size_t port_size = nla_total_size(4) /* PORT_VF */ | |
780 | + nla_total_size(PORT_PROFILE_MAX) /* PORT_PROFILE */ | |
781 | + nla_total_size(sizeof(struct ifla_port_vsi)) | |
782 | /* PORT_VSI_TYPE */ | |
783 | + nla_total_size(PORT_UUID_MAX) /* PORT_INSTANCE_UUID */ | |
784 | + nla_total_size(PORT_UUID_MAX) /* PORT_HOST_UUID */ | |
785 | + nla_total_size(1) /* PROT_VDP_REQUEST */ | |
786 | + nla_total_size(2); /* PORT_VDP_RESPONSE */ | |
787 | size_t vf_ports_size = nla_total_size(sizeof(struct nlattr)); | |
788 | size_t vf_port_size = nla_total_size(sizeof(struct nlattr)) | |
789 | + port_size; | |
790 | size_t port_self_size = nla_total_size(sizeof(struct nlattr)) | |
791 | + port_size; | |
792 | ||
793 | if (!dev->netdev_ops->ndo_get_vf_port || !dev->dev.parent) | |
794 | return 0; | |
795 | if (dev_num_vf(dev->dev.parent)) | |
796 | return port_self_size + vf_ports_size + | |
797 | vf_port_size * dev_num_vf(dev->dev.parent); | |
798 | else | |
799 | return port_self_size; | |
800 | } | |
801 | ||
115c9b81 GR |
802 | static noinline size_t if_nlmsg_size(const struct net_device *dev, |
803 | u32 ext_filter_mask) | |
339bf98f TG |
804 | { |
805 | return NLMSG_ALIGN(sizeof(struct ifinfomsg)) | |
806 | + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */ | |
0b815a1a | 807 | + nla_total_size(IFALIASZ) /* IFLA_IFALIAS */ |
339bf98f TG |
808 | + nla_total_size(IFNAMSIZ) /* IFLA_QDISC */ |
809 | + nla_total_size(sizeof(struct rtnl_link_ifmap)) | |
810 | + nla_total_size(sizeof(struct rtnl_link_stats)) | |
adcfe196 | 811 | + nla_total_size(sizeof(struct rtnl_link_stats64)) |
339bf98f TG |
812 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */ |
813 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_BROADCAST */ | |
814 | + nla_total_size(4) /* IFLA_TXQLEN */ | |
815 | + nla_total_size(4) /* IFLA_WEIGHT */ | |
816 | + nla_total_size(4) /* IFLA_MTU */ | |
817 | + nla_total_size(4) /* IFLA_LINK */ | |
818 | + nla_total_size(4) /* IFLA_MASTER */ | |
9a57247f | 819 | + nla_total_size(1) /* IFLA_CARRIER */ |
edbc0bb3 | 820 | + nla_total_size(4) /* IFLA_PROMISCUITY */ |
76ff5cc9 JP |
821 | + nla_total_size(4) /* IFLA_NUM_TX_QUEUES */ |
822 | + nla_total_size(4) /* IFLA_NUM_RX_QUEUES */ | |
339bf98f | 823 | + nla_total_size(1) /* IFLA_OPERSTATE */ |
38f7b870 | 824 | + nla_total_size(1) /* IFLA_LINKMODE */ |
2d3b479d | 825 | + nla_total_size(4) /* IFLA_CARRIER_CHANGES */ |
115c9b81 GR |
826 | + nla_total_size(ext_filter_mask |
827 | & RTEXT_FILTER_VF ? 4 : 0) /* IFLA_NUM_VF */ | |
828 | + rtnl_vfinfo_size(dev, ext_filter_mask) /* IFLA_VFINFO_LIST */ | |
57b61080 | 829 | + rtnl_port_size(dev) /* IFLA_VF_PORTS + IFLA_PORT_SELF */ |
f8ff182c | 830 | + rtnl_link_get_size(dev) /* IFLA_LINKINFO */ |
66cae9ed JP |
831 | + rtnl_link_get_af_size(dev) /* IFLA_AF_SPEC */ |
832 | + nla_total_size(MAX_PHYS_PORT_ID_LEN); /* IFLA_PHYS_PORT_ID */ | |
339bf98f TG |
833 | } |
834 | ||
57b61080 SF |
835 | static int rtnl_vf_ports_fill(struct sk_buff *skb, struct net_device *dev) |
836 | { | |
837 | struct nlattr *vf_ports; | |
838 | struct nlattr *vf_port; | |
839 | int vf; | |
840 | int err; | |
841 | ||
842 | vf_ports = nla_nest_start(skb, IFLA_VF_PORTS); | |
843 | if (!vf_ports) | |
844 | return -EMSGSIZE; | |
845 | ||
846 | for (vf = 0; vf < dev_num_vf(dev->dev.parent); vf++) { | |
847 | vf_port = nla_nest_start(skb, IFLA_VF_PORT); | |
8ca94183 SF |
848 | if (!vf_port) |
849 | goto nla_put_failure; | |
a6574349 DM |
850 | if (nla_put_u32(skb, IFLA_PORT_VF, vf)) |
851 | goto nla_put_failure; | |
57b61080 | 852 | err = dev->netdev_ops->ndo_get_vf_port(dev, vf, skb); |
8ca94183 SF |
853 | if (err == -EMSGSIZE) |
854 | goto nla_put_failure; | |
57b61080 | 855 | if (err) { |
57b61080 SF |
856 | nla_nest_cancel(skb, vf_port); |
857 | continue; | |
858 | } | |
859 | nla_nest_end(skb, vf_port); | |
860 | } | |
861 | ||
862 | nla_nest_end(skb, vf_ports); | |
863 | ||
864 | return 0; | |
8ca94183 SF |
865 | |
866 | nla_put_failure: | |
867 | nla_nest_cancel(skb, vf_ports); | |
868 | return -EMSGSIZE; | |
57b61080 SF |
869 | } |
870 | ||
871 | static int rtnl_port_self_fill(struct sk_buff *skb, struct net_device *dev) | |
872 | { | |
873 | struct nlattr *port_self; | |
874 | int err; | |
875 | ||
876 | port_self = nla_nest_start(skb, IFLA_PORT_SELF); | |
877 | if (!port_self) | |
878 | return -EMSGSIZE; | |
879 | ||
880 | err = dev->netdev_ops->ndo_get_vf_port(dev, PORT_SELF_VF, skb); | |
881 | if (err) { | |
882 | nla_nest_cancel(skb, port_self); | |
8ca94183 | 883 | return (err == -EMSGSIZE) ? err : 0; |
57b61080 SF |
884 | } |
885 | ||
886 | nla_nest_end(skb, port_self); | |
887 | ||
888 | return 0; | |
889 | } | |
890 | ||
891 | static int rtnl_port_fill(struct sk_buff *skb, struct net_device *dev) | |
892 | { | |
893 | int err; | |
894 | ||
895 | if (!dev->netdev_ops->ndo_get_vf_port || !dev->dev.parent) | |
896 | return 0; | |
897 | ||
898 | err = rtnl_port_self_fill(skb, dev); | |
899 | if (err) | |
900 | return err; | |
901 | ||
902 | if (dev_num_vf(dev->dev.parent)) { | |
903 | err = rtnl_vf_ports_fill(skb, dev); | |
904 | if (err) | |
905 | return err; | |
906 | } | |
907 | ||
908 | return 0; | |
909 | } | |
910 | ||
66cae9ed JP |
911 | static int rtnl_phys_port_id_fill(struct sk_buff *skb, struct net_device *dev) |
912 | { | |
913 | int err; | |
914 | struct netdev_phys_port_id ppid; | |
915 | ||
916 | err = dev_get_phys_port_id(dev, &ppid); | |
917 | if (err) { | |
918 | if (err == -EOPNOTSUPP) | |
919 | return 0; | |
920 | return err; | |
921 | } | |
922 | ||
923 | if (nla_put(skb, IFLA_PHYS_PORT_ID, ppid.id_len, ppid.id)) | |
924 | return -EMSGSIZE; | |
925 | ||
926 | return 0; | |
927 | } | |
928 | ||
b60c5115 | 929 | static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev, |
575c3e2a | 930 | int type, u32 pid, u32 seq, u32 change, |
115c9b81 | 931 | unsigned int flags, u32 ext_filter_mask) |
b60c5115 TG |
932 | { |
933 | struct ifinfomsg *ifm; | |
934 | struct nlmsghdr *nlh; | |
28172739 | 935 | struct rtnl_link_stats64 temp; |
be1f3c2c | 936 | const struct rtnl_link_stats64 *stats; |
f8ff182c TG |
937 | struct nlattr *attr, *af_spec; |
938 | struct rtnl_af_ops *af_ops; | |
898e5061 | 939 | struct net_device *upper_dev = netdev_master_upper_dev_get(dev); |
1da177e4 | 940 | |
2907c35f | 941 | ASSERT_RTNL(); |
b60c5115 TG |
942 | nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ifm), flags); |
943 | if (nlh == NULL) | |
26932566 | 944 | return -EMSGSIZE; |
1da177e4 | 945 | |
b60c5115 TG |
946 | ifm = nlmsg_data(nlh); |
947 | ifm->ifi_family = AF_UNSPEC; | |
948 | ifm->__ifi_pad = 0; | |
949 | ifm->ifi_type = dev->type; | |
950 | ifm->ifi_index = dev->ifindex; | |
951 | ifm->ifi_flags = dev_get_flags(dev); | |
952 | ifm->ifi_change = change; | |
953 | ||
a6574349 DM |
954 | if (nla_put_string(skb, IFLA_IFNAME, dev->name) || |
955 | nla_put_u32(skb, IFLA_TXQLEN, dev->tx_queue_len) || | |
956 | nla_put_u8(skb, IFLA_OPERSTATE, | |
957 | netif_running(dev) ? dev->operstate : IF_OPER_DOWN) || | |
958 | nla_put_u8(skb, IFLA_LINKMODE, dev->link_mode) || | |
959 | nla_put_u32(skb, IFLA_MTU, dev->mtu) || | |
960 | nla_put_u32(skb, IFLA_GROUP, dev->group) || | |
edbc0bb3 | 961 | nla_put_u32(skb, IFLA_PROMISCUITY, dev->promiscuity) || |
76ff5cc9 | 962 | nla_put_u32(skb, IFLA_NUM_TX_QUEUES, dev->num_tx_queues) || |
1d69c2b3 | 963 | #ifdef CONFIG_RPS |
76ff5cc9 | 964 | nla_put_u32(skb, IFLA_NUM_RX_QUEUES, dev->num_rx_queues) || |
1d69c2b3 | 965 | #endif |
a6574349 DM |
966 | (dev->ifindex != dev->iflink && |
967 | nla_put_u32(skb, IFLA_LINK, dev->iflink)) || | |
898e5061 JP |
968 | (upper_dev && |
969 | nla_put_u32(skb, IFLA_MASTER, upper_dev->ifindex)) || | |
9a57247f | 970 | nla_put_u8(skb, IFLA_CARRIER, netif_carrier_ok(dev)) || |
a6574349 DM |
971 | (dev->qdisc && |
972 | nla_put_string(skb, IFLA_QDISC, dev->qdisc->ops->id)) || | |
973 | (dev->ifalias && | |
2d3b479d | 974 | nla_put_string(skb, IFLA_IFALIAS, dev->ifalias)) || |
975 | nla_put_u32(skb, IFLA_CARRIER_CHANGES, | |
976 | atomic_read(&dev->carrier_changes))) | |
a6574349 | 977 | goto nla_put_failure; |
0b815a1a | 978 | |
1da177e4 LT |
979 | if (1) { |
980 | struct rtnl_link_ifmap map = { | |
981 | .mem_start = dev->mem_start, | |
982 | .mem_end = dev->mem_end, | |
983 | .base_addr = dev->base_addr, | |
984 | .irq = dev->irq, | |
985 | .dma = dev->dma, | |
986 | .port = dev->if_port, | |
987 | }; | |
a6574349 DM |
988 | if (nla_put(skb, IFLA_MAP, sizeof(map), &map)) |
989 | goto nla_put_failure; | |
1da177e4 LT |
990 | } |
991 | ||
992 | if (dev->addr_len) { | |
a6574349 DM |
993 | if (nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr) || |
994 | nla_put(skb, IFLA_BROADCAST, dev->addr_len, dev->broadcast)) | |
995 | goto nla_put_failure; | |
1da177e4 LT |
996 | } |
997 | ||
66cae9ed JP |
998 | if (rtnl_phys_port_id_fill(skb, dev)) |
999 | goto nla_put_failure; | |
1000 | ||
96e74088 PE |
1001 | attr = nla_reserve(skb, IFLA_STATS, |
1002 | sizeof(struct rtnl_link_stats)); | |
1003 | if (attr == NULL) | |
1004 | goto nla_put_failure; | |
b60c5115 | 1005 | |
28172739 | 1006 | stats = dev_get_stats(dev, &temp); |
96e74088 | 1007 | copy_rtnl_link_stats(nla_data(attr), stats); |
1da177e4 | 1008 | |
10708f37 JE |
1009 | attr = nla_reserve(skb, IFLA_STATS64, |
1010 | sizeof(struct rtnl_link_stats64)); | |
1011 | if (attr == NULL) | |
1012 | goto nla_put_failure; | |
10708f37 JE |
1013 | copy_rtnl_link_stats64(nla_data(attr), stats); |
1014 | ||
a6574349 DM |
1015 | if (dev->dev.parent && (ext_filter_mask & RTEXT_FILTER_VF) && |
1016 | nla_put_u32(skb, IFLA_NUM_VF, dev_num_vf(dev->dev.parent))) | |
1017 | goto nla_put_failure; | |
57b61080 | 1018 | |
115c9b81 GR |
1019 | if (dev->netdev_ops->ndo_get_vf_config && dev->dev.parent |
1020 | && (ext_filter_mask & RTEXT_FILTER_VF)) { | |
ebc08a6f | 1021 | int i; |
ebc08a6f | 1022 | |
c02db8c6 CW |
1023 | struct nlattr *vfinfo, *vf; |
1024 | int num_vfs = dev_num_vf(dev->dev.parent); | |
1025 | ||
c02db8c6 CW |
1026 | vfinfo = nla_nest_start(skb, IFLA_VFINFO_LIST); |
1027 | if (!vfinfo) | |
1028 | goto nla_put_failure; | |
1029 | for (i = 0; i < num_vfs; i++) { | |
1030 | struct ifla_vf_info ivi; | |
1031 | struct ifla_vf_mac vf_mac; | |
1032 | struct ifla_vf_vlan vf_vlan; | |
1033 | struct ifla_vf_tx_rate vf_tx_rate; | |
5f8444a3 | 1034 | struct ifla_vf_spoofchk vf_spoofchk; |
1d8faf48 | 1035 | struct ifla_vf_link_state vf_linkstate; |
5f8444a3 GR |
1036 | |
1037 | /* | |
1038 | * Not all SR-IOV capable drivers support the | |
1039 | * spoofcheck query. Preset to -1 so the user | |
1040 | * space tool can detect that the driver didn't | |
1041 | * report anything. | |
1042 | */ | |
1043 | ivi.spoofchk = -1; | |
84d73cd3 | 1044 | memset(ivi.mac, 0, sizeof(ivi.mac)); |
1d8faf48 RE |
1045 | /* The default value for VF link state is "auto" |
1046 | * IFLA_VF_LINK_STATE_AUTO which equals zero | |
1047 | */ | |
1048 | ivi.linkstate = 0; | |
ebc08a6f WM |
1049 | if (dev->netdev_ops->ndo_get_vf_config(dev, i, &ivi)) |
1050 | break; | |
5f8444a3 GR |
1051 | vf_mac.vf = |
1052 | vf_vlan.vf = | |
1053 | vf_tx_rate.vf = | |
1d8faf48 RE |
1054 | vf_spoofchk.vf = |
1055 | vf_linkstate.vf = ivi.vf; | |
5f8444a3 | 1056 | |
c02db8c6 CW |
1057 | memcpy(vf_mac.mac, ivi.mac, sizeof(ivi.mac)); |
1058 | vf_vlan.vlan = ivi.vlan; | |
1059 | vf_vlan.qos = ivi.qos; | |
1060 | vf_tx_rate.rate = ivi.tx_rate; | |
5f8444a3 | 1061 | vf_spoofchk.setting = ivi.spoofchk; |
1d8faf48 | 1062 | vf_linkstate.link_state = ivi.linkstate; |
c02db8c6 CW |
1063 | vf = nla_nest_start(skb, IFLA_VF_INFO); |
1064 | if (!vf) { | |
1065 | nla_nest_cancel(skb, vfinfo); | |
1066 | goto nla_put_failure; | |
1067 | } | |
a6574349 DM |
1068 | if (nla_put(skb, IFLA_VF_MAC, sizeof(vf_mac), &vf_mac) || |
1069 | nla_put(skb, IFLA_VF_VLAN, sizeof(vf_vlan), &vf_vlan) || | |
1070 | nla_put(skb, IFLA_VF_TX_RATE, sizeof(vf_tx_rate), | |
1071 | &vf_tx_rate) || | |
1072 | nla_put(skb, IFLA_VF_SPOOFCHK, sizeof(vf_spoofchk), | |
1d8faf48 RE |
1073 | &vf_spoofchk) || |
1074 | nla_put(skb, IFLA_VF_LINK_STATE, sizeof(vf_linkstate), | |
1075 | &vf_linkstate)) | |
a6574349 | 1076 | goto nla_put_failure; |
c02db8c6 | 1077 | nla_nest_end(skb, vf); |
ebc08a6f | 1078 | } |
c02db8c6 | 1079 | nla_nest_end(skb, vfinfo); |
ebc08a6f | 1080 | } |
57b61080 SF |
1081 | |
1082 | if (rtnl_port_fill(skb, dev)) | |
1083 | goto nla_put_failure; | |
1084 | ||
ba7d49b1 | 1085 | if (dev->rtnl_link_ops || rtnl_have_link_slave_info(dev)) { |
38f7b870 PM |
1086 | if (rtnl_link_fill(skb, dev) < 0) |
1087 | goto nla_put_failure; | |
1088 | } | |
1089 | ||
f8ff182c TG |
1090 | if (!(af_spec = nla_nest_start(skb, IFLA_AF_SPEC))) |
1091 | goto nla_put_failure; | |
1092 | ||
1093 | list_for_each_entry(af_ops, &rtnl_af_ops, list) { | |
1094 | if (af_ops->fill_link_af) { | |
1095 | struct nlattr *af; | |
1096 | int err; | |
1097 | ||
1098 | if (!(af = nla_nest_start(skb, af_ops->family))) | |
1099 | goto nla_put_failure; | |
1100 | ||
1101 | err = af_ops->fill_link_af(skb, dev); | |
1102 | ||
1103 | /* | |
1104 | * Caller may return ENODATA to indicate that there | |
1105 | * was no data to be dumped. This is not an error, it | |
1106 | * means we should trim the attribute header and | |
1107 | * continue. | |
1108 | */ | |
1109 | if (err == -ENODATA) | |
1110 | nla_nest_cancel(skb, af); | |
1111 | else if (err < 0) | |
1112 | goto nla_put_failure; | |
1113 | ||
1114 | nla_nest_end(skb, af); | |
1115 | } | |
1116 | } | |
1117 | ||
1118 | nla_nest_end(skb, af_spec); | |
1119 | ||
b60c5115 TG |
1120 | return nlmsg_end(skb, nlh); |
1121 | ||
1122 | nla_put_failure: | |
26932566 PM |
1123 | nlmsg_cancel(skb, nlh); |
1124 | return -EMSGSIZE; | |
1da177e4 LT |
1125 | } |
1126 | ||
f7b12606 | 1127 | static const struct nla_policy ifla_policy[IFLA_MAX+1] = { |
5176f91e | 1128 | [IFLA_IFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ-1 }, |
38f7b870 PM |
1129 | [IFLA_ADDRESS] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN }, |
1130 | [IFLA_BROADCAST] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN }, | |
5176f91e | 1131 | [IFLA_MAP] = { .len = sizeof(struct rtnl_link_ifmap) }, |
da5e0494 | 1132 | [IFLA_MTU] = { .type = NLA_U32 }, |
76e87306 | 1133 | [IFLA_LINK] = { .type = NLA_U32 }, |
fbaec0ea | 1134 | [IFLA_MASTER] = { .type = NLA_U32 }, |
9a57247f | 1135 | [IFLA_CARRIER] = { .type = NLA_U8 }, |
da5e0494 TG |
1136 | [IFLA_TXQLEN] = { .type = NLA_U32 }, |
1137 | [IFLA_WEIGHT] = { .type = NLA_U32 }, | |
1138 | [IFLA_OPERSTATE] = { .type = NLA_U8 }, | |
1139 | [IFLA_LINKMODE] = { .type = NLA_U8 }, | |
76e87306 | 1140 | [IFLA_LINKINFO] = { .type = NLA_NESTED }, |
d8a5ec67 | 1141 | [IFLA_NET_NS_PID] = { .type = NLA_U32 }, |
f0630529 | 1142 | [IFLA_NET_NS_FD] = { .type = NLA_U32 }, |
0b815a1a | 1143 | [IFLA_IFALIAS] = { .type = NLA_STRING, .len = IFALIASZ-1 }, |
c02db8c6 | 1144 | [IFLA_VFINFO_LIST] = {. type = NLA_NESTED }, |
57b61080 SF |
1145 | [IFLA_VF_PORTS] = { .type = NLA_NESTED }, |
1146 | [IFLA_PORT_SELF] = { .type = NLA_NESTED }, | |
f8ff182c | 1147 | [IFLA_AF_SPEC] = { .type = NLA_NESTED }, |
115c9b81 | 1148 | [IFLA_EXT_MASK] = { .type = NLA_U32 }, |
edbc0bb3 | 1149 | [IFLA_PROMISCUITY] = { .type = NLA_U32 }, |
76ff5cc9 JP |
1150 | [IFLA_NUM_TX_QUEUES] = { .type = NLA_U32 }, |
1151 | [IFLA_NUM_RX_QUEUES] = { .type = NLA_U32 }, | |
66cae9ed | 1152 | [IFLA_PHYS_PORT_ID] = { .type = NLA_BINARY, .len = MAX_PHYS_PORT_ID_LEN }, |
2d3b479d | 1153 | [IFLA_CARRIER_CHANGES] = { .type = NLA_U32 }, /* ignored */ |
da5e0494 TG |
1154 | }; |
1155 | ||
38f7b870 PM |
1156 | static const struct nla_policy ifla_info_policy[IFLA_INFO_MAX+1] = { |
1157 | [IFLA_INFO_KIND] = { .type = NLA_STRING }, | |
1158 | [IFLA_INFO_DATA] = { .type = NLA_NESTED }, | |
ba7d49b1 JP |
1159 | [IFLA_INFO_SLAVE_KIND] = { .type = NLA_STRING }, |
1160 | [IFLA_INFO_SLAVE_DATA] = { .type = NLA_NESTED }, | |
38f7b870 PM |
1161 | }; |
1162 | ||
c02db8c6 CW |
1163 | static const struct nla_policy ifla_vfinfo_policy[IFLA_VF_INFO_MAX+1] = { |
1164 | [IFLA_VF_INFO] = { .type = NLA_NESTED }, | |
1165 | }; | |
1166 | ||
1167 | static const struct nla_policy ifla_vf_policy[IFLA_VF_MAX+1] = { | |
1168 | [IFLA_VF_MAC] = { .type = NLA_BINARY, | |
1169 | .len = sizeof(struct ifla_vf_mac) }, | |
1170 | [IFLA_VF_VLAN] = { .type = NLA_BINARY, | |
1171 | .len = sizeof(struct ifla_vf_vlan) }, | |
1172 | [IFLA_VF_TX_RATE] = { .type = NLA_BINARY, | |
1173 | .len = sizeof(struct ifla_vf_tx_rate) }, | |
48752f65 GR |
1174 | [IFLA_VF_SPOOFCHK] = { .type = NLA_BINARY, |
1175 | .len = sizeof(struct ifla_vf_spoofchk) }, | |
c02db8c6 CW |
1176 | }; |
1177 | ||
57b61080 SF |
1178 | static const struct nla_policy ifla_port_policy[IFLA_PORT_MAX+1] = { |
1179 | [IFLA_PORT_VF] = { .type = NLA_U32 }, | |
1180 | [IFLA_PORT_PROFILE] = { .type = NLA_STRING, | |
1181 | .len = PORT_PROFILE_MAX }, | |
1182 | [IFLA_PORT_VSI_TYPE] = { .type = NLA_BINARY, | |
1183 | .len = sizeof(struct ifla_port_vsi)}, | |
1184 | [IFLA_PORT_INSTANCE_UUID] = { .type = NLA_BINARY, | |
1185 | .len = PORT_UUID_MAX }, | |
1186 | [IFLA_PORT_HOST_UUID] = { .type = NLA_STRING, | |
1187 | .len = PORT_UUID_MAX }, | |
1188 | [IFLA_PORT_REQUEST] = { .type = NLA_U8, }, | |
1189 | [IFLA_PORT_RESPONSE] = { .type = NLA_U16, }, | |
1190 | }; | |
1191 | ||
f7b12606 JP |
1192 | static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb) |
1193 | { | |
1194 | struct net *net = sock_net(skb->sk); | |
1195 | int h, s_h; | |
1196 | int idx = 0, s_idx; | |
1197 | struct net_device *dev; | |
1198 | struct hlist_head *head; | |
1199 | struct nlattr *tb[IFLA_MAX+1]; | |
1200 | u32 ext_filter_mask = 0; | |
1201 | ||
1202 | s_h = cb->args[0]; | |
1203 | s_idx = cb->args[1]; | |
1204 | ||
1205 | rcu_read_lock(); | |
1206 | cb->seq = net->dev_base_seq; | |
1207 | ||
1208 | if (nlmsg_parse(cb->nlh, sizeof(struct ifinfomsg), tb, IFLA_MAX, | |
1209 | ifla_policy) >= 0) { | |
1210 | ||
1211 | if (tb[IFLA_EXT_MASK]) | |
1212 | ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]); | |
1213 | } | |
1214 | ||
1215 | for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) { | |
1216 | idx = 0; | |
1217 | head = &net->dev_index_head[h]; | |
1218 | hlist_for_each_entry_rcu(dev, head, index_hlist) { | |
1219 | if (idx < s_idx) | |
1220 | goto cont; | |
1221 | if (rtnl_fill_ifinfo(skb, dev, RTM_NEWLINK, | |
1222 | NETLINK_CB(cb->skb).portid, | |
1223 | cb->nlh->nlmsg_seq, 0, | |
1224 | NLM_F_MULTI, | |
1225 | ext_filter_mask) <= 0) | |
1226 | goto out; | |
1227 | ||
1228 | nl_dump_check_consistent(cb, nlmsg_hdr(skb)); | |
1229 | cont: | |
1230 | idx++; | |
1231 | } | |
1232 | } | |
1233 | out: | |
1234 | rcu_read_unlock(); | |
1235 | cb->args[1] = idx; | |
1236 | cb->args[0] = h; | |
1237 | ||
1238 | return skb->len; | |
1239 | } | |
1240 | ||
1241 | int rtnl_nla_parse_ifla(struct nlattr **tb, const struct nlattr *head, int len) | |
1242 | { | |
1243 | return nla_parse(tb, IFLA_MAX, head, len, ifla_policy); | |
1244 | } | |
1245 | EXPORT_SYMBOL(rtnl_nla_parse_ifla); | |
1246 | ||
81adee47 EB |
1247 | struct net *rtnl_link_get_net(struct net *src_net, struct nlattr *tb[]) |
1248 | { | |
1249 | struct net *net; | |
1250 | /* Examine the link attributes and figure out which | |
1251 | * network namespace we are talking about. | |
1252 | */ | |
1253 | if (tb[IFLA_NET_NS_PID]) | |
1254 | net = get_net_ns_by_pid(nla_get_u32(tb[IFLA_NET_NS_PID])); | |
f0630529 EB |
1255 | else if (tb[IFLA_NET_NS_FD]) |
1256 | net = get_net_ns_by_fd(nla_get_u32(tb[IFLA_NET_NS_FD])); | |
81adee47 EB |
1257 | else |
1258 | net = get_net(src_net); | |
1259 | return net; | |
1260 | } | |
1261 | EXPORT_SYMBOL(rtnl_link_get_net); | |
1262 | ||
1840bb13 TG |
1263 | static int validate_linkmsg(struct net_device *dev, struct nlattr *tb[]) |
1264 | { | |
1265 | if (dev) { | |
1266 | if (tb[IFLA_ADDRESS] && | |
1267 | nla_len(tb[IFLA_ADDRESS]) < dev->addr_len) | |
1268 | return -EINVAL; | |
1269 | ||
1270 | if (tb[IFLA_BROADCAST] && | |
1271 | nla_len(tb[IFLA_BROADCAST]) < dev->addr_len) | |
1272 | return -EINVAL; | |
1273 | } | |
1274 | ||
cf7afbfe TG |
1275 | if (tb[IFLA_AF_SPEC]) { |
1276 | struct nlattr *af; | |
1277 | int rem, err; | |
1278 | ||
1279 | nla_for_each_nested(af, tb[IFLA_AF_SPEC], rem) { | |
1280 | const struct rtnl_af_ops *af_ops; | |
1281 | ||
1282 | if (!(af_ops = rtnl_af_lookup(nla_type(af)))) | |
1283 | return -EAFNOSUPPORT; | |
1284 | ||
1285 | if (!af_ops->set_link_af) | |
1286 | return -EOPNOTSUPP; | |
1287 | ||
1288 | if (af_ops->validate_link_af) { | |
6d3a9a68 | 1289 | err = af_ops->validate_link_af(dev, af); |
cf7afbfe TG |
1290 | if (err < 0) |
1291 | return err; | |
1292 | } | |
1293 | } | |
1294 | } | |
1295 | ||
1840bb13 TG |
1296 | return 0; |
1297 | } | |
1298 | ||
c02db8c6 CW |
1299 | static int do_setvfinfo(struct net_device *dev, struct nlattr *attr) |
1300 | { | |
1301 | int rem, err = -EINVAL; | |
1302 | struct nlattr *vf; | |
1303 | const struct net_device_ops *ops = dev->netdev_ops; | |
1304 | ||
1305 | nla_for_each_nested(vf, attr, rem) { | |
1306 | switch (nla_type(vf)) { | |
1307 | case IFLA_VF_MAC: { | |
1308 | struct ifla_vf_mac *ivm; | |
1309 | ivm = nla_data(vf); | |
1310 | err = -EOPNOTSUPP; | |
1311 | if (ops->ndo_set_vf_mac) | |
1312 | err = ops->ndo_set_vf_mac(dev, ivm->vf, | |
1313 | ivm->mac); | |
1314 | break; | |
1315 | } | |
1316 | case IFLA_VF_VLAN: { | |
1317 | struct ifla_vf_vlan *ivv; | |
1318 | ivv = nla_data(vf); | |
1319 | err = -EOPNOTSUPP; | |
1320 | if (ops->ndo_set_vf_vlan) | |
1321 | err = ops->ndo_set_vf_vlan(dev, ivv->vf, | |
1322 | ivv->vlan, | |
1323 | ivv->qos); | |
1324 | break; | |
1325 | } | |
1326 | case IFLA_VF_TX_RATE: { | |
1327 | struct ifla_vf_tx_rate *ivt; | |
1328 | ivt = nla_data(vf); | |
1329 | err = -EOPNOTSUPP; | |
1330 | if (ops->ndo_set_vf_tx_rate) | |
1331 | err = ops->ndo_set_vf_tx_rate(dev, ivt->vf, | |
1332 | ivt->rate); | |
1333 | break; | |
1334 | } | |
5f8444a3 GR |
1335 | case IFLA_VF_SPOOFCHK: { |
1336 | struct ifla_vf_spoofchk *ivs; | |
1337 | ivs = nla_data(vf); | |
1338 | err = -EOPNOTSUPP; | |
1339 | if (ops->ndo_set_vf_spoofchk) | |
1340 | err = ops->ndo_set_vf_spoofchk(dev, ivs->vf, | |
1341 | ivs->setting); | |
1342 | break; | |
1343 | } | |
1d8faf48 RE |
1344 | case IFLA_VF_LINK_STATE: { |
1345 | struct ifla_vf_link_state *ivl; | |
1346 | ivl = nla_data(vf); | |
1347 | err = -EOPNOTSUPP; | |
1348 | if (ops->ndo_set_vf_link_state) | |
1349 | err = ops->ndo_set_vf_link_state(dev, ivl->vf, | |
1350 | ivl->link_state); | |
1351 | break; | |
1352 | } | |
c02db8c6 CW |
1353 | default: |
1354 | err = -EINVAL; | |
1355 | break; | |
1356 | } | |
1357 | if (err) | |
1358 | break; | |
1359 | } | |
1360 | return err; | |
1361 | } | |
1362 | ||
fbaec0ea JP |
1363 | static int do_set_master(struct net_device *dev, int ifindex) |
1364 | { | |
898e5061 | 1365 | struct net_device *upper_dev = netdev_master_upper_dev_get(dev); |
fbaec0ea JP |
1366 | const struct net_device_ops *ops; |
1367 | int err; | |
1368 | ||
898e5061 JP |
1369 | if (upper_dev) { |
1370 | if (upper_dev->ifindex == ifindex) | |
fbaec0ea | 1371 | return 0; |
898e5061 | 1372 | ops = upper_dev->netdev_ops; |
fbaec0ea | 1373 | if (ops->ndo_del_slave) { |
898e5061 | 1374 | err = ops->ndo_del_slave(upper_dev, dev); |
fbaec0ea JP |
1375 | if (err) |
1376 | return err; | |
1377 | } else { | |
1378 | return -EOPNOTSUPP; | |
1379 | } | |
1380 | } | |
1381 | ||
1382 | if (ifindex) { | |
898e5061 JP |
1383 | upper_dev = __dev_get_by_index(dev_net(dev), ifindex); |
1384 | if (!upper_dev) | |
fbaec0ea | 1385 | return -EINVAL; |
898e5061 | 1386 | ops = upper_dev->netdev_ops; |
fbaec0ea | 1387 | if (ops->ndo_add_slave) { |
898e5061 | 1388 | err = ops->ndo_add_slave(upper_dev, dev); |
fbaec0ea JP |
1389 | if (err) |
1390 | return err; | |
1391 | } else { | |
1392 | return -EOPNOTSUPP; | |
1393 | } | |
1394 | } | |
1395 | return 0; | |
1396 | } | |
1397 | ||
0157f60c | 1398 | static int do_setlink(struct net_device *dev, struct ifinfomsg *ifm, |
38f7b870 | 1399 | struct nlattr **tb, char *ifname, int modified) |
1da177e4 | 1400 | { |
d314774c | 1401 | const struct net_device_ops *ops = dev->netdev_ops; |
0157f60c | 1402 | int err; |
1da177e4 | 1403 | |
f0630529 | 1404 | if (tb[IFLA_NET_NS_PID] || tb[IFLA_NET_NS_FD]) { |
81adee47 | 1405 | struct net *net = rtnl_link_get_net(dev_net(dev), tb); |
d8a5ec67 EB |
1406 | if (IS_ERR(net)) { |
1407 | err = PTR_ERR(net); | |
1408 | goto errout; | |
1409 | } | |
b51642f6 EB |
1410 | if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) { |
1411 | err = -EPERM; | |
1412 | goto errout; | |
1413 | } | |
d8a5ec67 EB |
1414 | err = dev_change_net_namespace(dev, net, ifname); |
1415 | put_net(net); | |
1416 | if (err) | |
1417 | goto errout; | |
1418 | modified = 1; | |
1419 | } | |
1420 | ||
da5e0494 | 1421 | if (tb[IFLA_MAP]) { |
1da177e4 LT |
1422 | struct rtnl_link_ifmap *u_map; |
1423 | struct ifmap k_map; | |
1424 | ||
d314774c | 1425 | if (!ops->ndo_set_config) { |
1da177e4 | 1426 | err = -EOPNOTSUPP; |
0157f60c | 1427 | goto errout; |
1da177e4 LT |
1428 | } |
1429 | ||
1430 | if (!netif_device_present(dev)) { | |
1431 | err = -ENODEV; | |
0157f60c | 1432 | goto errout; |
1da177e4 | 1433 | } |
1da177e4 | 1434 | |
da5e0494 | 1435 | u_map = nla_data(tb[IFLA_MAP]); |
1da177e4 LT |
1436 | k_map.mem_start = (unsigned long) u_map->mem_start; |
1437 | k_map.mem_end = (unsigned long) u_map->mem_end; | |
1438 | k_map.base_addr = (unsigned short) u_map->base_addr; | |
1439 | k_map.irq = (unsigned char) u_map->irq; | |
1440 | k_map.dma = (unsigned char) u_map->dma; | |
1441 | k_map.port = (unsigned char) u_map->port; | |
1442 | ||
d314774c | 1443 | err = ops->ndo_set_config(dev, &k_map); |
da5e0494 | 1444 | if (err < 0) |
0157f60c | 1445 | goto errout; |
1da177e4 | 1446 | |
da5e0494 | 1447 | modified = 1; |
1da177e4 LT |
1448 | } |
1449 | ||
da5e0494 | 1450 | if (tb[IFLA_ADDRESS]) { |
70f8e78e DM |
1451 | struct sockaddr *sa; |
1452 | int len; | |
1453 | ||
70f8e78e DM |
1454 | len = sizeof(sa_family_t) + dev->addr_len; |
1455 | sa = kmalloc(len, GFP_KERNEL); | |
1456 | if (!sa) { | |
1457 | err = -ENOMEM; | |
0157f60c | 1458 | goto errout; |
70f8e78e DM |
1459 | } |
1460 | sa->sa_family = dev->type; | |
da5e0494 | 1461 | memcpy(sa->sa_data, nla_data(tb[IFLA_ADDRESS]), |
70f8e78e | 1462 | dev->addr_len); |
e7c3273e | 1463 | err = dev_set_mac_address(dev, sa); |
70f8e78e | 1464 | kfree(sa); |
1da177e4 | 1465 | if (err) |
0157f60c | 1466 | goto errout; |
da5e0494 | 1467 | modified = 1; |
1da177e4 LT |
1468 | } |
1469 | ||
da5e0494 TG |
1470 | if (tb[IFLA_MTU]) { |
1471 | err = dev_set_mtu(dev, nla_get_u32(tb[IFLA_MTU])); | |
1472 | if (err < 0) | |
0157f60c | 1473 | goto errout; |
da5e0494 | 1474 | modified = 1; |
1da177e4 LT |
1475 | } |
1476 | ||
cbda10fa VD |
1477 | if (tb[IFLA_GROUP]) { |
1478 | dev_set_group(dev, nla_get_u32(tb[IFLA_GROUP])); | |
1479 | modified = 1; | |
1480 | } | |
1481 | ||
da5e0494 TG |
1482 | /* |
1483 | * Interface selected by interface index but interface | |
1484 | * name provided implies that a name change has been | |
1485 | * requested. | |
1486 | */ | |
51055be8 | 1487 | if (ifm->ifi_index > 0 && ifname[0]) { |
da5e0494 TG |
1488 | err = dev_change_name(dev, ifname); |
1489 | if (err < 0) | |
0157f60c | 1490 | goto errout; |
da5e0494 | 1491 | modified = 1; |
1da177e4 LT |
1492 | } |
1493 | ||
0b815a1a SH |
1494 | if (tb[IFLA_IFALIAS]) { |
1495 | err = dev_set_alias(dev, nla_data(tb[IFLA_IFALIAS]), | |
1496 | nla_len(tb[IFLA_IFALIAS])); | |
1497 | if (err < 0) | |
1498 | goto errout; | |
1499 | modified = 1; | |
1500 | } | |
1501 | ||
da5e0494 TG |
1502 | if (tb[IFLA_BROADCAST]) { |
1503 | nla_memcpy(dev->broadcast, tb[IFLA_BROADCAST], dev->addr_len); | |
e7c3273e | 1504 | call_netdevice_notifiers(NETDEV_CHANGEADDR, dev); |
1da177e4 LT |
1505 | } |
1506 | ||
83b496e9 | 1507 | if (ifm->ifi_flags || ifm->ifi_change) { |
3729d502 | 1508 | err = dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm)); |
5f9021cf JB |
1509 | if (err < 0) |
1510 | goto errout; | |
83b496e9 | 1511 | } |
1da177e4 | 1512 | |
fbaec0ea JP |
1513 | if (tb[IFLA_MASTER]) { |
1514 | err = do_set_master(dev, nla_get_u32(tb[IFLA_MASTER])); | |
1515 | if (err) | |
1516 | goto errout; | |
1517 | modified = 1; | |
1518 | } | |
1519 | ||
9a57247f JP |
1520 | if (tb[IFLA_CARRIER]) { |
1521 | err = dev_change_carrier(dev, nla_get_u8(tb[IFLA_CARRIER])); | |
1522 | if (err) | |
1523 | goto errout; | |
1524 | modified = 1; | |
1525 | } | |
1526 | ||
93b2d4a2 DM |
1527 | if (tb[IFLA_TXQLEN]) |
1528 | dev->tx_queue_len = nla_get_u32(tb[IFLA_TXQLEN]); | |
b00055aa | 1529 | |
da5e0494 | 1530 | if (tb[IFLA_OPERSTATE]) |
93b2d4a2 | 1531 | set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE])); |
b00055aa | 1532 | |
da5e0494 | 1533 | if (tb[IFLA_LINKMODE]) { |
93b2d4a2 DM |
1534 | write_lock_bh(&dev_base_lock); |
1535 | dev->link_mode = nla_get_u8(tb[IFLA_LINKMODE]); | |
1536 | write_unlock_bh(&dev_base_lock); | |
b00055aa SR |
1537 | } |
1538 | ||
c02db8c6 CW |
1539 | if (tb[IFLA_VFINFO_LIST]) { |
1540 | struct nlattr *attr; | |
1541 | int rem; | |
1542 | nla_for_each_nested(attr, tb[IFLA_VFINFO_LIST], rem) { | |
253683bb DH |
1543 | if (nla_type(attr) != IFLA_VF_INFO) { |
1544 | err = -EINVAL; | |
c02db8c6 | 1545 | goto errout; |
253683bb | 1546 | } |
c02db8c6 CW |
1547 | err = do_setvfinfo(dev, attr); |
1548 | if (err < 0) | |
1549 | goto errout; | |
1550 | modified = 1; | |
1551 | } | |
ebc08a6f | 1552 | } |
1da177e4 LT |
1553 | err = 0; |
1554 | ||
57b61080 SF |
1555 | if (tb[IFLA_VF_PORTS]) { |
1556 | struct nlattr *port[IFLA_PORT_MAX+1]; | |
1557 | struct nlattr *attr; | |
1558 | int vf; | |
1559 | int rem; | |
1560 | ||
1561 | err = -EOPNOTSUPP; | |
1562 | if (!ops->ndo_set_vf_port) | |
1563 | goto errout; | |
1564 | ||
1565 | nla_for_each_nested(attr, tb[IFLA_VF_PORTS], rem) { | |
1566 | if (nla_type(attr) != IFLA_VF_PORT) | |
1567 | continue; | |
1568 | err = nla_parse_nested(port, IFLA_PORT_MAX, | |
1569 | attr, ifla_port_policy); | |
1570 | if (err < 0) | |
1571 | goto errout; | |
1572 | if (!port[IFLA_PORT_VF]) { | |
1573 | err = -EOPNOTSUPP; | |
1574 | goto errout; | |
1575 | } | |
1576 | vf = nla_get_u32(port[IFLA_PORT_VF]); | |
1577 | err = ops->ndo_set_vf_port(dev, vf, port); | |
1578 | if (err < 0) | |
1579 | goto errout; | |
1580 | modified = 1; | |
1581 | } | |
1582 | } | |
1583 | err = 0; | |
1584 | ||
1585 | if (tb[IFLA_PORT_SELF]) { | |
1586 | struct nlattr *port[IFLA_PORT_MAX+1]; | |
1587 | ||
1588 | err = nla_parse_nested(port, IFLA_PORT_MAX, | |
1589 | tb[IFLA_PORT_SELF], ifla_port_policy); | |
1590 | if (err < 0) | |
1591 | goto errout; | |
1592 | ||
1593 | err = -EOPNOTSUPP; | |
1594 | if (ops->ndo_set_vf_port) | |
1595 | err = ops->ndo_set_vf_port(dev, PORT_SELF_VF, port); | |
1596 | if (err < 0) | |
1597 | goto errout; | |
1598 | modified = 1; | |
1599 | } | |
f8ff182c TG |
1600 | |
1601 | if (tb[IFLA_AF_SPEC]) { | |
1602 | struct nlattr *af; | |
1603 | int rem; | |
1604 | ||
1605 | nla_for_each_nested(af, tb[IFLA_AF_SPEC], rem) { | |
1606 | const struct rtnl_af_ops *af_ops; | |
1607 | ||
1608 | if (!(af_ops = rtnl_af_lookup(nla_type(af)))) | |
cf7afbfe | 1609 | BUG(); |
f8ff182c | 1610 | |
cf7afbfe | 1611 | err = af_ops->set_link_af(dev, af); |
f8ff182c TG |
1612 | if (err < 0) |
1613 | goto errout; | |
1614 | ||
1615 | modified = 1; | |
1616 | } | |
1617 | } | |
57b61080 SF |
1618 | err = 0; |
1619 | ||
0157f60c | 1620 | errout: |
e87cc472 JP |
1621 | if (err < 0 && modified) |
1622 | 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", | |
1623 | dev->name); | |
da5e0494 | 1624 | |
0157f60c PM |
1625 | return err; |
1626 | } | |
1da177e4 | 1627 | |
661d2967 | 1628 | static int rtnl_setlink(struct sk_buff *skb, struct nlmsghdr *nlh) |
0157f60c | 1629 | { |
3b1e0a65 | 1630 | struct net *net = sock_net(skb->sk); |
0157f60c PM |
1631 | struct ifinfomsg *ifm; |
1632 | struct net_device *dev; | |
1633 | int err; | |
1634 | struct nlattr *tb[IFLA_MAX+1]; | |
1635 | char ifname[IFNAMSIZ]; | |
1636 | ||
1637 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); | |
1638 | if (err < 0) | |
1639 | goto errout; | |
1640 | ||
1641 | if (tb[IFLA_IFNAME]) | |
1642 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
1643 | else | |
1644 | ifname[0] = '\0'; | |
1645 | ||
1646 | err = -EINVAL; | |
1647 | ifm = nlmsg_data(nlh); | |
1648 | if (ifm->ifi_index > 0) | |
a3d12891 | 1649 | dev = __dev_get_by_index(net, ifm->ifi_index); |
0157f60c | 1650 | else if (tb[IFLA_IFNAME]) |
a3d12891 | 1651 | dev = __dev_get_by_name(net, ifname); |
0157f60c PM |
1652 | else |
1653 | goto errout; | |
1654 | ||
1655 | if (dev == NULL) { | |
1656 | err = -ENODEV; | |
1657 | goto errout; | |
1658 | } | |
1659 | ||
e0d087af ED |
1660 | err = validate_linkmsg(dev, tb); |
1661 | if (err < 0) | |
a3d12891 | 1662 | goto errout; |
0157f60c | 1663 | |
38f7b870 | 1664 | err = do_setlink(dev, ifm, tb, ifname, 0); |
da5e0494 | 1665 | errout: |
1da177e4 LT |
1666 | return err; |
1667 | } | |
1668 | ||
661d2967 | 1669 | static int rtnl_dellink(struct sk_buff *skb, struct nlmsghdr *nlh) |
38f7b870 | 1670 | { |
3b1e0a65 | 1671 | struct net *net = sock_net(skb->sk); |
38f7b870 PM |
1672 | const struct rtnl_link_ops *ops; |
1673 | struct net_device *dev; | |
1674 | struct ifinfomsg *ifm; | |
1675 | char ifname[IFNAMSIZ]; | |
1676 | struct nlattr *tb[IFLA_MAX+1]; | |
1677 | int err; | |
226bd341 | 1678 | LIST_HEAD(list_kill); |
38f7b870 PM |
1679 | |
1680 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); | |
1681 | if (err < 0) | |
1682 | return err; | |
1683 | ||
1684 | if (tb[IFLA_IFNAME]) | |
1685 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
1686 | ||
1687 | ifm = nlmsg_data(nlh); | |
1688 | if (ifm->ifi_index > 0) | |
881d966b | 1689 | dev = __dev_get_by_index(net, ifm->ifi_index); |
38f7b870 | 1690 | else if (tb[IFLA_IFNAME]) |
881d966b | 1691 | dev = __dev_get_by_name(net, ifname); |
38f7b870 PM |
1692 | else |
1693 | return -EINVAL; | |
1694 | ||
1695 | if (!dev) | |
1696 | return -ENODEV; | |
1697 | ||
1698 | ops = dev->rtnl_link_ops; | |
1699 | if (!ops) | |
1700 | return -EOPNOTSUPP; | |
1701 | ||
226bd341 ED |
1702 | ops->dellink(dev, &list_kill); |
1703 | unregister_netdevice_many(&list_kill); | |
1704 | list_del(&list_kill); | |
38f7b870 PM |
1705 | return 0; |
1706 | } | |
1707 | ||
3729d502 PM |
1708 | int rtnl_configure_link(struct net_device *dev, const struct ifinfomsg *ifm) |
1709 | { | |
1710 | unsigned int old_flags; | |
1711 | int err; | |
1712 | ||
1713 | old_flags = dev->flags; | |
1714 | if (ifm && (ifm->ifi_flags || ifm->ifi_change)) { | |
1715 | err = __dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm)); | |
1716 | if (err < 0) | |
1717 | return err; | |
1718 | } | |
1719 | ||
1720 | dev->rtnl_link_state = RTNL_LINK_INITIALIZED; | |
3729d502 | 1721 | |
a528c219 | 1722 | __dev_notify_flags(dev, old_flags, ~0U); |
3729d502 PM |
1723 | return 0; |
1724 | } | |
1725 | EXPORT_SYMBOL(rtnl_configure_link); | |
1726 | ||
c0713563 | 1727 | struct net_device *rtnl_create_link(struct net *net, |
81adee47 | 1728 | char *ifname, const struct rtnl_link_ops *ops, struct nlattr *tb[]) |
e7199288 PE |
1729 | { |
1730 | int err; | |
1731 | struct net_device *dev; | |
d40156aa JP |
1732 | unsigned int num_tx_queues = 1; |
1733 | unsigned int num_rx_queues = 1; | |
e7199288 | 1734 | |
76ff5cc9 JP |
1735 | if (tb[IFLA_NUM_TX_QUEUES]) |
1736 | num_tx_queues = nla_get_u32(tb[IFLA_NUM_TX_QUEUES]); | |
1737 | else if (ops->get_num_tx_queues) | |
d40156aa | 1738 | num_tx_queues = ops->get_num_tx_queues(); |
76ff5cc9 JP |
1739 | |
1740 | if (tb[IFLA_NUM_RX_QUEUES]) | |
1741 | num_rx_queues = nla_get_u32(tb[IFLA_NUM_RX_QUEUES]); | |
1742 | else if (ops->get_num_rx_queues) | |
d40156aa | 1743 | num_rx_queues = ops->get_num_rx_queues(); |
efacb309 | 1744 | |
e7199288 | 1745 | err = -ENOMEM; |
d40156aa JP |
1746 | dev = alloc_netdev_mqs(ops->priv_size, ifname, ops->setup, |
1747 | num_tx_queues, num_rx_queues); | |
e7199288 PE |
1748 | if (!dev) |
1749 | goto err; | |
1750 | ||
81adee47 EB |
1751 | dev_net_set(dev, net); |
1752 | dev->rtnl_link_ops = ops; | |
3729d502 | 1753 | dev->rtnl_link_state = RTNL_LINK_INITIALIZING; |
81adee47 | 1754 | |
e7199288 PE |
1755 | if (tb[IFLA_MTU]) |
1756 | dev->mtu = nla_get_u32(tb[IFLA_MTU]); | |
2afb9b53 | 1757 | if (tb[IFLA_ADDRESS]) { |
e7199288 PE |
1758 | memcpy(dev->dev_addr, nla_data(tb[IFLA_ADDRESS]), |
1759 | nla_len(tb[IFLA_ADDRESS])); | |
2afb9b53 JP |
1760 | dev->addr_assign_type = NET_ADDR_SET; |
1761 | } | |
e7199288 PE |
1762 | if (tb[IFLA_BROADCAST]) |
1763 | memcpy(dev->broadcast, nla_data(tb[IFLA_BROADCAST]), | |
1764 | nla_len(tb[IFLA_BROADCAST])); | |
1765 | if (tb[IFLA_TXQLEN]) | |
1766 | dev->tx_queue_len = nla_get_u32(tb[IFLA_TXQLEN]); | |
1767 | if (tb[IFLA_OPERSTATE]) | |
93b2d4a2 | 1768 | set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE])); |
e7199288 PE |
1769 | if (tb[IFLA_LINKMODE]) |
1770 | dev->link_mode = nla_get_u8(tb[IFLA_LINKMODE]); | |
ffa934f1 PM |
1771 | if (tb[IFLA_GROUP]) |
1772 | dev_set_group(dev, nla_get_u32(tb[IFLA_GROUP])); | |
e7199288 PE |
1773 | |
1774 | return dev; | |
1775 | ||
e7199288 PE |
1776 | err: |
1777 | return ERR_PTR(err); | |
1778 | } | |
e0d087af | 1779 | EXPORT_SYMBOL(rtnl_create_link); |
e7199288 | 1780 | |
e7ed828f VD |
1781 | static int rtnl_group_changelink(struct net *net, int group, |
1782 | struct ifinfomsg *ifm, | |
1783 | struct nlattr **tb) | |
1784 | { | |
1785 | struct net_device *dev; | |
1786 | int err; | |
1787 | ||
1788 | for_each_netdev(net, dev) { | |
1789 | if (dev->group == group) { | |
1790 | err = do_setlink(dev, ifm, tb, NULL, 0); | |
1791 | if (err < 0) | |
1792 | return err; | |
1793 | } | |
1794 | } | |
1795 | ||
1796 | return 0; | |
1797 | } | |
1798 | ||
661d2967 | 1799 | static int rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh) |
38f7b870 | 1800 | { |
3b1e0a65 | 1801 | struct net *net = sock_net(skb->sk); |
38f7b870 | 1802 | const struct rtnl_link_ops *ops; |
ba7d49b1 | 1803 | const struct rtnl_link_ops *m_ops = NULL; |
38f7b870 | 1804 | struct net_device *dev; |
ba7d49b1 | 1805 | struct net_device *master_dev = NULL; |
38f7b870 PM |
1806 | struct ifinfomsg *ifm; |
1807 | char kind[MODULE_NAME_LEN]; | |
1808 | char ifname[IFNAMSIZ]; | |
1809 | struct nlattr *tb[IFLA_MAX+1]; | |
1810 | struct nlattr *linkinfo[IFLA_INFO_MAX+1]; | |
1811 | int err; | |
1812 | ||
95a5afca | 1813 | #ifdef CONFIG_MODULES |
38f7b870 | 1814 | replay: |
8072f085 | 1815 | #endif |
38f7b870 PM |
1816 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); |
1817 | if (err < 0) | |
1818 | return err; | |
1819 | ||
1820 | if (tb[IFLA_IFNAME]) | |
1821 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
1822 | else | |
1823 | ifname[0] = '\0'; | |
1824 | ||
1825 | ifm = nlmsg_data(nlh); | |
1826 | if (ifm->ifi_index > 0) | |
881d966b | 1827 | dev = __dev_get_by_index(net, ifm->ifi_index); |
e7ed828f VD |
1828 | else { |
1829 | if (ifname[0]) | |
1830 | dev = __dev_get_by_name(net, ifname); | |
e7ed828f VD |
1831 | else |
1832 | dev = NULL; | |
1833 | } | |
38f7b870 | 1834 | |
ba7d49b1 JP |
1835 | if (dev) { |
1836 | master_dev = netdev_master_upper_dev_get(dev); | |
1837 | if (master_dev) | |
1838 | m_ops = master_dev->rtnl_link_ops; | |
1839 | } | |
1840 | ||
e0d087af ED |
1841 | err = validate_linkmsg(dev, tb); |
1842 | if (err < 0) | |
1840bb13 TG |
1843 | return err; |
1844 | ||
38f7b870 PM |
1845 | if (tb[IFLA_LINKINFO]) { |
1846 | err = nla_parse_nested(linkinfo, IFLA_INFO_MAX, | |
1847 | tb[IFLA_LINKINFO], ifla_info_policy); | |
1848 | if (err < 0) | |
1849 | return err; | |
1850 | } else | |
1851 | memset(linkinfo, 0, sizeof(linkinfo)); | |
1852 | ||
1853 | if (linkinfo[IFLA_INFO_KIND]) { | |
1854 | nla_strlcpy(kind, linkinfo[IFLA_INFO_KIND], sizeof(kind)); | |
1855 | ops = rtnl_link_ops_get(kind); | |
1856 | } else { | |
1857 | kind[0] = '\0'; | |
1858 | ops = NULL; | |
1859 | } | |
1860 | ||
1861 | if (1) { | |
ba7d49b1 JP |
1862 | struct nlattr *attr[ops ? ops->maxtype + 1 : 0]; |
1863 | struct nlattr *slave_attr[m_ops ? m_ops->slave_maxtype + 1 : 0]; | |
1864 | struct nlattr **data = NULL; | |
1865 | struct nlattr **slave_data = NULL; | |
81adee47 | 1866 | struct net *dest_net; |
38f7b870 PM |
1867 | |
1868 | if (ops) { | |
1869 | if (ops->maxtype && linkinfo[IFLA_INFO_DATA]) { | |
1870 | err = nla_parse_nested(attr, ops->maxtype, | |
1871 | linkinfo[IFLA_INFO_DATA], | |
1872 | ops->policy); | |
1873 | if (err < 0) | |
1874 | return err; | |
1875 | data = attr; | |
1876 | } | |
1877 | if (ops->validate) { | |
1878 | err = ops->validate(tb, data); | |
1879 | if (err < 0) | |
1880 | return err; | |
1881 | } | |
1882 | } | |
1883 | ||
ba7d49b1 JP |
1884 | if (m_ops) { |
1885 | if (m_ops->slave_maxtype && | |
1886 | linkinfo[IFLA_INFO_SLAVE_DATA]) { | |
1887 | err = nla_parse_nested(slave_attr, | |
1888 | m_ops->slave_maxtype, | |
1889 | linkinfo[IFLA_INFO_SLAVE_DATA], | |
1890 | m_ops->slave_policy); | |
1891 | if (err < 0) | |
1892 | return err; | |
1893 | slave_data = slave_attr; | |
1894 | } | |
1895 | if (m_ops->slave_validate) { | |
1896 | err = m_ops->slave_validate(tb, slave_data); | |
1897 | if (err < 0) | |
1898 | return err; | |
1899 | } | |
1900 | } | |
1901 | ||
38f7b870 PM |
1902 | if (dev) { |
1903 | int modified = 0; | |
1904 | ||
1905 | if (nlh->nlmsg_flags & NLM_F_EXCL) | |
1906 | return -EEXIST; | |
1907 | if (nlh->nlmsg_flags & NLM_F_REPLACE) | |
1908 | return -EOPNOTSUPP; | |
1909 | ||
1910 | if (linkinfo[IFLA_INFO_DATA]) { | |
1911 | if (!ops || ops != dev->rtnl_link_ops || | |
1912 | !ops->changelink) | |
1913 | return -EOPNOTSUPP; | |
1914 | ||
1915 | err = ops->changelink(dev, tb, data); | |
1916 | if (err < 0) | |
1917 | return err; | |
1918 | modified = 1; | |
1919 | } | |
1920 | ||
ba7d49b1 JP |
1921 | if (linkinfo[IFLA_INFO_SLAVE_DATA]) { |
1922 | if (!m_ops || !m_ops->slave_changelink) | |
1923 | return -EOPNOTSUPP; | |
1924 | ||
1925 | err = m_ops->slave_changelink(master_dev, dev, | |
1926 | tb, slave_data); | |
1927 | if (err < 0) | |
1928 | return err; | |
1929 | modified = 1; | |
1930 | } | |
1931 | ||
38f7b870 PM |
1932 | return do_setlink(dev, ifm, tb, ifname, modified); |
1933 | } | |
1934 | ||
ffa934f1 PM |
1935 | if (!(nlh->nlmsg_flags & NLM_F_CREATE)) { |
1936 | if (ifm->ifi_index == 0 && tb[IFLA_GROUP]) | |
1937 | return rtnl_group_changelink(net, | |
1938 | nla_get_u32(tb[IFLA_GROUP]), | |
1939 | ifm, tb); | |
38f7b870 | 1940 | return -ENODEV; |
ffa934f1 | 1941 | } |
38f7b870 | 1942 | |
0e06877c | 1943 | if (tb[IFLA_MAP] || tb[IFLA_MASTER] || tb[IFLA_PROTINFO]) |
38f7b870 PM |
1944 | return -EOPNOTSUPP; |
1945 | ||
1946 | if (!ops) { | |
95a5afca | 1947 | #ifdef CONFIG_MODULES |
38f7b870 PM |
1948 | if (kind[0]) { |
1949 | __rtnl_unlock(); | |
1950 | request_module("rtnl-link-%s", kind); | |
1951 | rtnl_lock(); | |
1952 | ops = rtnl_link_ops_get(kind); | |
1953 | if (ops) | |
1954 | goto replay; | |
1955 | } | |
1956 | #endif | |
1957 | return -EOPNOTSUPP; | |
1958 | } | |
1959 | ||
1960 | if (!ifname[0]) | |
1961 | snprintf(ifname, IFNAMSIZ, "%s%%d", ops->kind); | |
e7199288 | 1962 | |
81adee47 | 1963 | dest_net = rtnl_link_get_net(net, tb); |
13ad1774 EB |
1964 | if (IS_ERR(dest_net)) |
1965 | return PTR_ERR(dest_net); | |
1966 | ||
c0713563 | 1967 | dev = rtnl_create_link(dest_net, ifname, ops, tb); |
9c7dafbf | 1968 | if (IS_ERR(dev)) { |
e7199288 | 1969 | err = PTR_ERR(dev); |
9c7dafbf PE |
1970 | goto out; |
1971 | } | |
1972 | ||
1973 | dev->ifindex = ifm->ifi_index; | |
1974 | ||
0e0eee24 | 1975 | if (ops->newlink) { |
81adee47 | 1976 | err = ops->newlink(net, dev, tb, data); |
0e0eee24 CW |
1977 | /* Drivers should call free_netdev() in ->destructor |
1978 | * and unregister it on failure so that device could be | |
1979 | * finally freed in rtnl_unlock. | |
1980 | */ | |
1981 | if (err < 0) | |
1982 | goto out; | |
1983 | } else { | |
2d85cba2 | 1984 | err = register_netdevice(dev); |
0e0eee24 CW |
1985 | if (err < 0) { |
1986 | free_netdev(dev); | |
1987 | goto out; | |
1988 | } | |
fce9b9be | 1989 | } |
3729d502 PM |
1990 | err = rtnl_configure_link(dev, ifm); |
1991 | if (err < 0) | |
1992 | unregister_netdevice(dev); | |
1993 | out: | |
81adee47 | 1994 | put_net(dest_net); |
38f7b870 PM |
1995 | return err; |
1996 | } | |
1997 | } | |
1998 | ||
661d2967 | 1999 | static int rtnl_getlink(struct sk_buff *skb, struct nlmsghdr* nlh) |
711e2c33 | 2000 | { |
3b1e0a65 | 2001 | struct net *net = sock_net(skb->sk); |
b60c5115 | 2002 | struct ifinfomsg *ifm; |
a3d12891 | 2003 | char ifname[IFNAMSIZ]; |
b60c5115 TG |
2004 | struct nlattr *tb[IFLA_MAX+1]; |
2005 | struct net_device *dev = NULL; | |
2006 | struct sk_buff *nskb; | |
339bf98f | 2007 | int err; |
115c9b81 | 2008 | u32 ext_filter_mask = 0; |
711e2c33 | 2009 | |
b60c5115 TG |
2010 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); |
2011 | if (err < 0) | |
9918f230 | 2012 | return err; |
b60c5115 | 2013 | |
a3d12891 ED |
2014 | if (tb[IFLA_IFNAME]) |
2015 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
2016 | ||
115c9b81 GR |
2017 | if (tb[IFLA_EXT_MASK]) |
2018 | ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]); | |
2019 | ||
b60c5115 | 2020 | ifm = nlmsg_data(nlh); |
a3d12891 ED |
2021 | if (ifm->ifi_index > 0) |
2022 | dev = __dev_get_by_index(net, ifm->ifi_index); | |
2023 | else if (tb[IFLA_IFNAME]) | |
2024 | dev = __dev_get_by_name(net, ifname); | |
2025 | else | |
711e2c33 | 2026 | return -EINVAL; |
711e2c33 | 2027 | |
a3d12891 ED |
2028 | if (dev == NULL) |
2029 | return -ENODEV; | |
2030 | ||
115c9b81 | 2031 | nskb = nlmsg_new(if_nlmsg_size(dev, ext_filter_mask), GFP_KERNEL); |
a3d12891 ED |
2032 | if (nskb == NULL) |
2033 | return -ENOBUFS; | |
b60c5115 | 2034 | |
15e47304 | 2035 | err = rtnl_fill_ifinfo(nskb, dev, RTM_NEWLINK, NETLINK_CB(skb).portid, |
115c9b81 | 2036 | nlh->nlmsg_seq, 0, 0, ext_filter_mask); |
26932566 PM |
2037 | if (err < 0) { |
2038 | /* -EMSGSIZE implies BUG in if_nlmsg_size */ | |
2039 | WARN_ON(err == -EMSGSIZE); | |
2040 | kfree_skb(nskb); | |
a3d12891 | 2041 | } else |
15e47304 | 2042 | err = rtnl_unicast(nskb, net, NETLINK_CB(skb).portid); |
711e2c33 | 2043 | |
b60c5115 | 2044 | return err; |
711e2c33 | 2045 | } |
711e2c33 | 2046 | |
115c9b81 | 2047 | static u16 rtnl_calcit(struct sk_buff *skb, struct nlmsghdr *nlh) |
c7ac8679 | 2048 | { |
115c9b81 GR |
2049 | struct net *net = sock_net(skb->sk); |
2050 | struct net_device *dev; | |
2051 | struct nlattr *tb[IFLA_MAX+1]; | |
2052 | u32 ext_filter_mask = 0; | |
2053 | u16 min_ifinfo_dump_size = 0; | |
2054 | ||
88c5b5ce | 2055 | if (nlmsg_parse(nlh, sizeof(struct ifinfomsg), tb, IFLA_MAX, |
a4b64fbe ED |
2056 | ifla_policy) >= 0) { |
2057 | if (tb[IFLA_EXT_MASK]) | |
2058 | ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]); | |
2059 | } | |
115c9b81 GR |
2060 | |
2061 | if (!ext_filter_mask) | |
2062 | return NLMSG_GOODSIZE; | |
2063 | /* | |
2064 | * traverse the list of net devices and compute the minimum | |
2065 | * buffer size based upon the filter mask. | |
2066 | */ | |
2067 | list_for_each_entry(dev, &net->dev_base_head, dev_list) { | |
2068 | min_ifinfo_dump_size = max_t(u16, min_ifinfo_dump_size, | |
2069 | if_nlmsg_size(dev, | |
2070 | ext_filter_mask)); | |
2071 | } | |
2072 | ||
c7ac8679 GR |
2073 | return min_ifinfo_dump_size; |
2074 | } | |
2075 | ||
42bad1da | 2076 | static int rtnl_dump_all(struct sk_buff *skb, struct netlink_callback *cb) |
1da177e4 LT |
2077 | { |
2078 | int idx; | |
2079 | int s_idx = cb->family; | |
2080 | ||
2081 | if (s_idx == 0) | |
2082 | s_idx = 1; | |
25239cee | 2083 | for (idx = 1; idx <= RTNL_FAMILY_MAX; idx++) { |
1da177e4 LT |
2084 | int type = cb->nlh->nlmsg_type-RTM_BASE; |
2085 | if (idx < s_idx || idx == PF_PACKET) | |
2086 | continue; | |
e2849863 TG |
2087 | if (rtnl_msg_handlers[idx] == NULL || |
2088 | rtnl_msg_handlers[idx][type].dumpit == NULL) | |
1da177e4 | 2089 | continue; |
0465277f | 2090 | if (idx > s_idx) { |
1da177e4 | 2091 | memset(&cb->args[0], 0, sizeof(cb->args)); |
0465277f ND |
2092 | cb->prev_seq = 0; |
2093 | cb->seq = 0; | |
2094 | } | |
e2849863 | 2095 | if (rtnl_msg_handlers[idx][type].dumpit(skb, cb)) |
1da177e4 LT |
2096 | break; |
2097 | } | |
2098 | cb->family = idx; | |
2099 | ||
2100 | return skb->len; | |
2101 | } | |
2102 | ||
7f294054 AS |
2103 | void rtmsg_ifinfo(int type, struct net_device *dev, unsigned int change, |
2104 | gfp_t flags) | |
1da177e4 | 2105 | { |
c346dca1 | 2106 | struct net *net = dev_net(dev); |
1da177e4 | 2107 | struct sk_buff *skb; |
0ec6d3f4 | 2108 | int err = -ENOBUFS; |
c7ac8679 | 2109 | size_t if_info_size; |
1da177e4 | 2110 | |
7f294054 | 2111 | skb = nlmsg_new((if_info_size = if_nlmsg_size(dev, 0)), flags); |
0ec6d3f4 TG |
2112 | if (skb == NULL) |
2113 | goto errout; | |
1da177e4 | 2114 | |
115c9b81 | 2115 | err = rtnl_fill_ifinfo(skb, dev, type, 0, 0, change, 0, 0); |
26932566 PM |
2116 | if (err < 0) { |
2117 | /* -EMSGSIZE implies BUG in if_nlmsg_size() */ | |
2118 | WARN_ON(err == -EMSGSIZE); | |
2119 | kfree_skb(skb); | |
2120 | goto errout; | |
2121 | } | |
7f294054 | 2122 | rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, flags); |
1ce85fe4 | 2123 | return; |
0ec6d3f4 TG |
2124 | errout: |
2125 | if (err < 0) | |
4b3da706 | 2126 | rtnl_set_sk_err(net, RTNLGRP_LINK, err); |
1da177e4 | 2127 | } |
471cb5a3 | 2128 | EXPORT_SYMBOL(rtmsg_ifinfo); |
1da177e4 | 2129 | |
d83b0603 JF |
2130 | static int nlmsg_populate_fdb_fill(struct sk_buff *skb, |
2131 | struct net_device *dev, | |
2132 | u8 *addr, u32 pid, u32 seq, | |
1c104a6b ND |
2133 | int type, unsigned int flags, |
2134 | int nlflags) | |
d83b0603 JF |
2135 | { |
2136 | struct nlmsghdr *nlh; | |
2137 | struct ndmsg *ndm; | |
2138 | ||
1c104a6b | 2139 | nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ndm), nlflags); |
d83b0603 JF |
2140 | if (!nlh) |
2141 | return -EMSGSIZE; | |
2142 | ||
2143 | ndm = nlmsg_data(nlh); | |
2144 | ndm->ndm_family = AF_BRIDGE; | |
2145 | ndm->ndm_pad1 = 0; | |
2146 | ndm->ndm_pad2 = 0; | |
2147 | ndm->ndm_flags = flags; | |
2148 | ndm->ndm_type = 0; | |
2149 | ndm->ndm_ifindex = dev->ifindex; | |
2150 | ndm->ndm_state = NUD_PERMANENT; | |
2151 | ||
2152 | if (nla_put(skb, NDA_LLADDR, ETH_ALEN, addr)) | |
2153 | goto nla_put_failure; | |
2154 | ||
2155 | return nlmsg_end(skb, nlh); | |
2156 | ||
2157 | nla_put_failure: | |
2158 | nlmsg_cancel(skb, nlh); | |
2159 | return -EMSGSIZE; | |
2160 | } | |
2161 | ||
3ff661c3 JF |
2162 | static inline size_t rtnl_fdb_nlmsg_size(void) |
2163 | { | |
2164 | return NLMSG_ALIGN(sizeof(struct ndmsg)) + nla_total_size(ETH_ALEN); | |
2165 | } | |
2166 | ||
2167 | static void rtnl_fdb_notify(struct net_device *dev, u8 *addr, int type) | |
2168 | { | |
2169 | struct net *net = dev_net(dev); | |
2170 | struct sk_buff *skb; | |
2171 | int err = -ENOBUFS; | |
2172 | ||
2173 | skb = nlmsg_new(rtnl_fdb_nlmsg_size(), GFP_ATOMIC); | |
2174 | if (!skb) | |
2175 | goto errout; | |
2176 | ||
1c104a6b | 2177 | err = nlmsg_populate_fdb_fill(skb, dev, addr, 0, 0, type, NTF_SELF, 0); |
3ff661c3 JF |
2178 | if (err < 0) { |
2179 | kfree_skb(skb); | |
2180 | goto errout; | |
2181 | } | |
2182 | ||
2183 | rtnl_notify(skb, net, 0, RTNLGRP_NEIGH, NULL, GFP_ATOMIC); | |
2184 | return; | |
2185 | errout: | |
2186 | rtnl_set_sk_err(net, RTNLGRP_NEIGH, err); | |
2187 | } | |
2188 | ||
090096bf VY |
2189 | /** |
2190 | * ndo_dflt_fdb_add - default netdevice operation to add an FDB entry | |
2191 | */ | |
2192 | int ndo_dflt_fdb_add(struct ndmsg *ndm, | |
2193 | struct nlattr *tb[], | |
2194 | struct net_device *dev, | |
2195 | const unsigned char *addr, | |
2196 | u16 flags) | |
2197 | { | |
2198 | int err = -EINVAL; | |
2199 | ||
2200 | /* If aging addresses are supported device will need to | |
2201 | * implement its own handler for this. | |
2202 | */ | |
2203 | if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) { | |
2204 | pr_info("%s: FDB only supports static addresses\n", dev->name); | |
2205 | return err; | |
2206 | } | |
2207 | ||
2208 | if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr)) | |
2209 | err = dev_uc_add_excl(dev, addr); | |
2210 | else if (is_multicast_ether_addr(addr)) | |
2211 | err = dev_mc_add_excl(dev, addr); | |
2212 | ||
2213 | /* Only return duplicate errors if NLM_F_EXCL is set */ | |
2214 | if (err == -EEXIST && !(flags & NLM_F_EXCL)) | |
2215 | err = 0; | |
2216 | ||
2217 | return err; | |
2218 | } | |
2219 | EXPORT_SYMBOL(ndo_dflt_fdb_add); | |
2220 | ||
661d2967 | 2221 | static int rtnl_fdb_add(struct sk_buff *skb, struct nlmsghdr *nlh) |
77162022 JF |
2222 | { |
2223 | struct net *net = sock_net(skb->sk); | |
77162022 JF |
2224 | struct ndmsg *ndm; |
2225 | struct nlattr *tb[NDA_MAX+1]; | |
2226 | struct net_device *dev; | |
2227 | u8 *addr; | |
2228 | int err; | |
2229 | ||
2230 | err = nlmsg_parse(nlh, sizeof(*ndm), tb, NDA_MAX, NULL); | |
2231 | if (err < 0) | |
2232 | return err; | |
2233 | ||
2234 | ndm = nlmsg_data(nlh); | |
2235 | if (ndm->ndm_ifindex == 0) { | |
2236 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid ifindex\n"); | |
2237 | return -EINVAL; | |
2238 | } | |
2239 | ||
2240 | dev = __dev_get_by_index(net, ndm->ndm_ifindex); | |
2241 | if (dev == NULL) { | |
2242 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with unknown ifindex\n"); | |
2243 | return -ENODEV; | |
2244 | } | |
2245 | ||
2246 | if (!tb[NDA_LLADDR] || nla_len(tb[NDA_LLADDR]) != ETH_ALEN) { | |
2247 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid address\n"); | |
2248 | return -EINVAL; | |
2249 | } | |
2250 | ||
2251 | addr = nla_data(tb[NDA_LLADDR]); | |
77162022 JF |
2252 | |
2253 | err = -EOPNOTSUPP; | |
2254 | ||
2255 | /* Support fdb on master device the net/bridge default case */ | |
2256 | if ((!ndm->ndm_flags || ndm->ndm_flags & NTF_MASTER) && | |
2257 | (dev->priv_flags & IFF_BRIDGE_PORT)) { | |
898e5061 JP |
2258 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
2259 | const struct net_device_ops *ops = br_dev->netdev_ops; | |
2260 | ||
2261 | err = ops->ndo_fdb_add(ndm, tb, dev, addr, nlh->nlmsg_flags); | |
77162022 JF |
2262 | if (err) |
2263 | goto out; | |
2264 | else | |
2265 | ndm->ndm_flags &= ~NTF_MASTER; | |
2266 | } | |
2267 | ||
2268 | /* Embedded bridge, macvlan, and any other device support */ | |
090096bf VY |
2269 | if ((ndm->ndm_flags & NTF_SELF)) { |
2270 | if (dev->netdev_ops->ndo_fdb_add) | |
2271 | err = dev->netdev_ops->ndo_fdb_add(ndm, tb, dev, addr, | |
2272 | nlh->nlmsg_flags); | |
2273 | else | |
2274 | err = ndo_dflt_fdb_add(ndm, tb, dev, addr, | |
2275 | nlh->nlmsg_flags); | |
77162022 | 2276 | |
3ff661c3 JF |
2277 | if (!err) { |
2278 | rtnl_fdb_notify(dev, addr, RTM_NEWNEIGH); | |
77162022 | 2279 | ndm->ndm_flags &= ~NTF_SELF; |
3ff661c3 | 2280 | } |
77162022 JF |
2281 | } |
2282 | out: | |
2283 | return err; | |
2284 | } | |
2285 | ||
090096bf VY |
2286 | /** |
2287 | * ndo_dflt_fdb_del - default netdevice operation to delete an FDB entry | |
2288 | */ | |
2289 | int ndo_dflt_fdb_del(struct ndmsg *ndm, | |
2290 | struct nlattr *tb[], | |
2291 | struct net_device *dev, | |
2292 | const unsigned char *addr) | |
2293 | { | |
2294 | int err = -EOPNOTSUPP; | |
2295 | ||
2296 | /* If aging addresses are supported device will need to | |
2297 | * implement its own handler for this. | |
2298 | */ | |
64535993 | 2299 | if (!(ndm->ndm_state & NUD_PERMANENT)) { |
090096bf VY |
2300 | pr_info("%s: FDB only supports static addresses\n", dev->name); |
2301 | return -EINVAL; | |
2302 | } | |
2303 | ||
2304 | if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr)) | |
2305 | err = dev_uc_del(dev, addr); | |
2306 | else if (is_multicast_ether_addr(addr)) | |
2307 | err = dev_mc_del(dev, addr); | |
2308 | else | |
2309 | err = -EINVAL; | |
2310 | ||
2311 | return err; | |
2312 | } | |
2313 | EXPORT_SYMBOL(ndo_dflt_fdb_del); | |
2314 | ||
661d2967 | 2315 | static int rtnl_fdb_del(struct sk_buff *skb, struct nlmsghdr *nlh) |
77162022 JF |
2316 | { |
2317 | struct net *net = sock_net(skb->sk); | |
2318 | struct ndmsg *ndm; | |
1690be63 | 2319 | struct nlattr *tb[NDA_MAX+1]; |
77162022 JF |
2320 | struct net_device *dev; |
2321 | int err = -EINVAL; | |
2322 | __u8 *addr; | |
2323 | ||
1690be63 VY |
2324 | if (!capable(CAP_NET_ADMIN)) |
2325 | return -EPERM; | |
2326 | ||
2327 | err = nlmsg_parse(nlh, sizeof(*ndm), tb, NDA_MAX, NULL); | |
2328 | if (err < 0) | |
2329 | return err; | |
77162022 JF |
2330 | |
2331 | ndm = nlmsg_data(nlh); | |
2332 | if (ndm->ndm_ifindex == 0) { | |
2333 | pr_info("PF_BRIDGE: RTM_DELNEIGH with invalid ifindex\n"); | |
2334 | return -EINVAL; | |
2335 | } | |
2336 | ||
2337 | dev = __dev_get_by_index(net, ndm->ndm_ifindex); | |
2338 | if (dev == NULL) { | |
2339 | pr_info("PF_BRIDGE: RTM_DELNEIGH with unknown ifindex\n"); | |
2340 | return -ENODEV; | |
2341 | } | |
2342 | ||
1690be63 VY |
2343 | if (!tb[NDA_LLADDR] || nla_len(tb[NDA_LLADDR]) != ETH_ALEN) { |
2344 | pr_info("PF_BRIDGE: RTM_DELNEIGH with invalid address\n"); | |
2345 | return -EINVAL; | |
2346 | } | |
2347 | ||
2348 | addr = nla_data(tb[NDA_LLADDR]); | |
77162022 | 2349 | |
77162022 JF |
2350 | err = -EOPNOTSUPP; |
2351 | ||
2352 | /* Support fdb on master device the net/bridge default case */ | |
2353 | if ((!ndm->ndm_flags || ndm->ndm_flags & NTF_MASTER) && | |
2354 | (dev->priv_flags & IFF_BRIDGE_PORT)) { | |
898e5061 JP |
2355 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
2356 | const struct net_device_ops *ops = br_dev->netdev_ops; | |
77162022 | 2357 | |
898e5061 | 2358 | if (ops->ndo_fdb_del) |
1690be63 | 2359 | err = ops->ndo_fdb_del(ndm, tb, dev, addr); |
77162022 JF |
2360 | |
2361 | if (err) | |
2362 | goto out; | |
2363 | else | |
2364 | ndm->ndm_flags &= ~NTF_MASTER; | |
2365 | } | |
2366 | ||
2367 | /* Embedded bridge, macvlan, and any other device support */ | |
090096bf VY |
2368 | if (ndm->ndm_flags & NTF_SELF) { |
2369 | if (dev->netdev_ops->ndo_fdb_del) | |
2370 | err = dev->netdev_ops->ndo_fdb_del(ndm, tb, dev, addr); | |
2371 | else | |
2372 | err = ndo_dflt_fdb_del(ndm, tb, dev, addr); | |
77162022 | 2373 | |
3ff661c3 JF |
2374 | if (!err) { |
2375 | rtnl_fdb_notify(dev, addr, RTM_DELNEIGH); | |
77162022 | 2376 | ndm->ndm_flags &= ~NTF_SELF; |
3ff661c3 | 2377 | } |
77162022 JF |
2378 | } |
2379 | out: | |
2380 | return err; | |
2381 | } | |
2382 | ||
d83b0603 JF |
2383 | static int nlmsg_populate_fdb(struct sk_buff *skb, |
2384 | struct netlink_callback *cb, | |
2385 | struct net_device *dev, | |
2386 | int *idx, | |
2387 | struct netdev_hw_addr_list *list) | |
2388 | { | |
2389 | struct netdev_hw_addr *ha; | |
2390 | int err; | |
15e47304 | 2391 | u32 portid, seq; |
d83b0603 | 2392 | |
15e47304 | 2393 | portid = NETLINK_CB(cb->skb).portid; |
d83b0603 JF |
2394 | seq = cb->nlh->nlmsg_seq; |
2395 | ||
2396 | list_for_each_entry(ha, &list->list, list) { | |
2397 | if (*idx < cb->args[0]) | |
2398 | goto skip; | |
2399 | ||
2400 | err = nlmsg_populate_fdb_fill(skb, dev, ha->addr, | |
a7a558fe | 2401 | portid, seq, |
1c104a6b ND |
2402 | RTM_NEWNEIGH, NTF_SELF, |
2403 | NLM_F_MULTI); | |
d83b0603 JF |
2404 | if (err < 0) |
2405 | return err; | |
2406 | skip: | |
2407 | *idx += 1; | |
2408 | } | |
2409 | return 0; | |
2410 | } | |
2411 | ||
2412 | /** | |
2c53040f | 2413 | * ndo_dflt_fdb_dump - default netdevice operation to dump an FDB table. |
d83b0603 JF |
2414 | * @nlh: netlink message header |
2415 | * @dev: netdevice | |
2416 | * | |
2417 | * Default netdevice operation to dump the existing unicast address list. | |
91f3e7b1 | 2418 | * Returns number of addresses from list put in skb. |
d83b0603 JF |
2419 | */ |
2420 | int ndo_dflt_fdb_dump(struct sk_buff *skb, | |
2421 | struct netlink_callback *cb, | |
2422 | struct net_device *dev, | |
2423 | int idx) | |
2424 | { | |
2425 | int err; | |
2426 | ||
2427 | netif_addr_lock_bh(dev); | |
2428 | err = nlmsg_populate_fdb(skb, cb, dev, &idx, &dev->uc); | |
2429 | if (err) | |
2430 | goto out; | |
2431 | nlmsg_populate_fdb(skb, cb, dev, &idx, &dev->mc); | |
2432 | out: | |
2433 | netif_addr_unlock_bh(dev); | |
2434 | return idx; | |
2435 | } | |
2436 | EXPORT_SYMBOL(ndo_dflt_fdb_dump); | |
2437 | ||
77162022 JF |
2438 | static int rtnl_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb) |
2439 | { | |
2440 | int idx = 0; | |
2441 | struct net *net = sock_net(skb->sk); | |
2442 | struct net_device *dev; | |
2443 | ||
2444 | rcu_read_lock(); | |
2445 | for_each_netdev_rcu(net, dev) { | |
2446 | if (dev->priv_flags & IFF_BRIDGE_PORT) { | |
898e5061 JP |
2447 | struct net_device *br_dev; |
2448 | const struct net_device_ops *ops; | |
77162022 | 2449 | |
898e5061 JP |
2450 | br_dev = netdev_master_upper_dev_get(dev); |
2451 | ops = br_dev->netdev_ops; | |
77162022 JF |
2452 | if (ops->ndo_fdb_dump) |
2453 | idx = ops->ndo_fdb_dump(skb, cb, dev, idx); | |
2454 | } | |
2455 | ||
2456 | if (dev->netdev_ops->ndo_fdb_dump) | |
2457 | idx = dev->netdev_ops->ndo_fdb_dump(skb, cb, dev, idx); | |
090096bf | 2458 | else |
91f3e7b1 | 2459 | idx = ndo_dflt_fdb_dump(skb, cb, dev, idx); |
77162022 JF |
2460 | } |
2461 | rcu_read_unlock(); | |
2462 | ||
2463 | cb->args[0] = idx; | |
2464 | return skb->len; | |
2465 | } | |
2466 | ||
815cccbf JF |
2467 | int ndo_dflt_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq, |
2468 | struct net_device *dev, u16 mode) | |
2469 | { | |
2470 | struct nlmsghdr *nlh; | |
2471 | struct ifinfomsg *ifm; | |
2472 | struct nlattr *br_afspec; | |
2473 | u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN; | |
898e5061 | 2474 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
815cccbf JF |
2475 | |
2476 | nlh = nlmsg_put(skb, pid, seq, RTM_NEWLINK, sizeof(*ifm), NLM_F_MULTI); | |
2477 | if (nlh == NULL) | |
2478 | return -EMSGSIZE; | |
2479 | ||
2480 | ifm = nlmsg_data(nlh); | |
2481 | ifm->ifi_family = AF_BRIDGE; | |
2482 | ifm->__ifi_pad = 0; | |
2483 | ifm->ifi_type = dev->type; | |
2484 | ifm->ifi_index = dev->ifindex; | |
2485 | ifm->ifi_flags = dev_get_flags(dev); | |
2486 | ifm->ifi_change = 0; | |
2487 | ||
2488 | ||
2489 | if (nla_put_string(skb, IFLA_IFNAME, dev->name) || | |
2490 | nla_put_u32(skb, IFLA_MTU, dev->mtu) || | |
2491 | nla_put_u8(skb, IFLA_OPERSTATE, operstate) || | |
898e5061 JP |
2492 | (br_dev && |
2493 | nla_put_u32(skb, IFLA_MASTER, br_dev->ifindex)) || | |
815cccbf JF |
2494 | (dev->addr_len && |
2495 | nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) || | |
2496 | (dev->ifindex != dev->iflink && | |
2497 | nla_put_u32(skb, IFLA_LINK, dev->iflink))) | |
2498 | goto nla_put_failure; | |
2499 | ||
2500 | br_afspec = nla_nest_start(skb, IFLA_AF_SPEC); | |
2501 | if (!br_afspec) | |
2502 | goto nla_put_failure; | |
2503 | ||
2504 | if (nla_put_u16(skb, IFLA_BRIDGE_FLAGS, BRIDGE_FLAGS_SELF) || | |
2505 | nla_put_u16(skb, IFLA_BRIDGE_MODE, mode)) { | |
2506 | nla_nest_cancel(skb, br_afspec); | |
2507 | goto nla_put_failure; | |
2508 | } | |
2509 | nla_nest_end(skb, br_afspec); | |
2510 | ||
2511 | return nlmsg_end(skb, nlh); | |
2512 | nla_put_failure: | |
2513 | nlmsg_cancel(skb, nlh); | |
2514 | return -EMSGSIZE; | |
2515 | } | |
2516 | EXPORT_SYMBOL(ndo_dflt_bridge_getlink); | |
2517 | ||
e5a55a89 JF |
2518 | static int rtnl_bridge_getlink(struct sk_buff *skb, struct netlink_callback *cb) |
2519 | { | |
2520 | struct net *net = sock_net(skb->sk); | |
2521 | struct net_device *dev; | |
2522 | int idx = 0; | |
2523 | u32 portid = NETLINK_CB(cb->skb).portid; | |
2524 | u32 seq = cb->nlh->nlmsg_seq; | |
6cbdceeb VY |
2525 | struct nlattr *extfilt; |
2526 | u32 filter_mask = 0; | |
2527 | ||
3e805ad2 | 2528 | extfilt = nlmsg_find_attr(cb->nlh, sizeof(struct ifinfomsg), |
6cbdceeb VY |
2529 | IFLA_EXT_MASK); |
2530 | if (extfilt) | |
2531 | filter_mask = nla_get_u32(extfilt); | |
e5a55a89 JF |
2532 | |
2533 | rcu_read_lock(); | |
2534 | for_each_netdev_rcu(net, dev) { | |
2535 | const struct net_device_ops *ops = dev->netdev_ops; | |
898e5061 | 2536 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
e5a55a89 | 2537 | |
898e5061 | 2538 | if (br_dev && br_dev->netdev_ops->ndo_bridge_getlink) { |
25b1e679 | 2539 | if (idx >= cb->args[0] && |
898e5061 | 2540 | br_dev->netdev_ops->ndo_bridge_getlink( |
6cbdceeb | 2541 | skb, portid, seq, dev, filter_mask) < 0) |
e5a55a89 | 2542 | break; |
25b1e679 | 2543 | idx++; |
e5a55a89 JF |
2544 | } |
2545 | ||
2546 | if (ops->ndo_bridge_getlink) { | |
25b1e679 | 2547 | if (idx >= cb->args[0] && |
6cbdceeb VY |
2548 | ops->ndo_bridge_getlink(skb, portid, seq, dev, |
2549 | filter_mask) < 0) | |
e5a55a89 | 2550 | break; |
25b1e679 | 2551 | idx++; |
e5a55a89 JF |
2552 | } |
2553 | } | |
2554 | rcu_read_unlock(); | |
2555 | cb->args[0] = idx; | |
2556 | ||
2557 | return skb->len; | |
2558 | } | |
2559 | ||
2469ffd7 JF |
2560 | static inline size_t bridge_nlmsg_size(void) |
2561 | { | |
2562 | return NLMSG_ALIGN(sizeof(struct ifinfomsg)) | |
2563 | + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */ | |
2564 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */ | |
2565 | + nla_total_size(sizeof(u32)) /* IFLA_MASTER */ | |
2566 | + nla_total_size(sizeof(u32)) /* IFLA_MTU */ | |
2567 | + nla_total_size(sizeof(u32)) /* IFLA_LINK */ | |
2568 | + nla_total_size(sizeof(u32)) /* IFLA_OPERSTATE */ | |
2569 | + nla_total_size(sizeof(u8)) /* IFLA_PROTINFO */ | |
2570 | + nla_total_size(sizeof(struct nlattr)) /* IFLA_AF_SPEC */ | |
2571 | + nla_total_size(sizeof(u16)) /* IFLA_BRIDGE_FLAGS */ | |
2572 | + nla_total_size(sizeof(u16)); /* IFLA_BRIDGE_MODE */ | |
2573 | } | |
2574 | ||
2575 | static int rtnl_bridge_notify(struct net_device *dev, u16 flags) | |
2576 | { | |
2577 | struct net *net = dev_net(dev); | |
898e5061 | 2578 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
2469ffd7 JF |
2579 | struct sk_buff *skb; |
2580 | int err = -EOPNOTSUPP; | |
2581 | ||
2582 | skb = nlmsg_new(bridge_nlmsg_size(), GFP_ATOMIC); | |
2583 | if (!skb) { | |
2584 | err = -ENOMEM; | |
2585 | goto errout; | |
2586 | } | |
2587 | ||
c38e01b8 | 2588 | if ((!flags || (flags & BRIDGE_FLAGS_MASTER)) && |
898e5061 | 2589 | br_dev && br_dev->netdev_ops->ndo_bridge_getlink) { |
6cbdceeb | 2590 | err = br_dev->netdev_ops->ndo_bridge_getlink(skb, 0, 0, dev, 0); |
c38e01b8 JF |
2591 | if (err < 0) |
2592 | goto errout; | |
2593 | } | |
2469ffd7 | 2594 | |
c38e01b8 JF |
2595 | if ((flags & BRIDGE_FLAGS_SELF) && |
2596 | dev->netdev_ops->ndo_bridge_getlink) { | |
6cbdceeb | 2597 | err = dev->netdev_ops->ndo_bridge_getlink(skb, 0, 0, dev, 0); |
c38e01b8 JF |
2598 | if (err < 0) |
2599 | goto errout; | |
2600 | } | |
2469ffd7 JF |
2601 | |
2602 | rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC); | |
2603 | return 0; | |
2604 | errout: | |
2605 | WARN_ON(err == -EMSGSIZE); | |
2606 | kfree_skb(skb); | |
2607 | rtnl_set_sk_err(net, RTNLGRP_LINK, err); | |
2608 | return err; | |
2609 | } | |
2610 | ||
661d2967 | 2611 | static int rtnl_bridge_setlink(struct sk_buff *skb, struct nlmsghdr *nlh) |
e5a55a89 JF |
2612 | { |
2613 | struct net *net = sock_net(skb->sk); | |
2614 | struct ifinfomsg *ifm; | |
2615 | struct net_device *dev; | |
2469ffd7 JF |
2616 | struct nlattr *br_spec, *attr = NULL; |
2617 | int rem, err = -EOPNOTSUPP; | |
c38e01b8 JF |
2618 | u16 oflags, flags = 0; |
2619 | bool have_flags = false; | |
e5a55a89 JF |
2620 | |
2621 | if (nlmsg_len(nlh) < sizeof(*ifm)) | |
2622 | return -EINVAL; | |
2623 | ||
2624 | ifm = nlmsg_data(nlh); | |
2625 | if (ifm->ifi_family != AF_BRIDGE) | |
2626 | return -EPFNOSUPPORT; | |
2627 | ||
2628 | dev = __dev_get_by_index(net, ifm->ifi_index); | |
2629 | if (!dev) { | |
2630 | pr_info("PF_BRIDGE: RTM_SETLINK with unknown ifindex\n"); | |
2631 | return -ENODEV; | |
2632 | } | |
2633 | ||
2469ffd7 JF |
2634 | br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); |
2635 | if (br_spec) { | |
2636 | nla_for_each_nested(attr, br_spec, rem) { | |
2637 | if (nla_type(attr) == IFLA_BRIDGE_FLAGS) { | |
c38e01b8 | 2638 | have_flags = true; |
2469ffd7 JF |
2639 | flags = nla_get_u16(attr); |
2640 | break; | |
2641 | } | |
2642 | } | |
2643 | } | |
2644 | ||
c38e01b8 JF |
2645 | oflags = flags; |
2646 | ||
2469ffd7 | 2647 | if (!flags || (flags & BRIDGE_FLAGS_MASTER)) { |
898e5061 JP |
2648 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
2649 | ||
2650 | if (!br_dev || !br_dev->netdev_ops->ndo_bridge_setlink) { | |
2469ffd7 JF |
2651 | err = -EOPNOTSUPP; |
2652 | goto out; | |
2653 | } | |
2654 | ||
898e5061 | 2655 | err = br_dev->netdev_ops->ndo_bridge_setlink(dev, nlh); |
e5a55a89 JF |
2656 | if (err) |
2657 | goto out; | |
2469ffd7 JF |
2658 | |
2659 | flags &= ~BRIDGE_FLAGS_MASTER; | |
e5a55a89 JF |
2660 | } |
2661 | ||
2469ffd7 JF |
2662 | if ((flags & BRIDGE_FLAGS_SELF)) { |
2663 | if (!dev->netdev_ops->ndo_bridge_setlink) | |
2664 | err = -EOPNOTSUPP; | |
2665 | else | |
2666 | err = dev->netdev_ops->ndo_bridge_setlink(dev, nlh); | |
2667 | ||
2668 | if (!err) | |
2669 | flags &= ~BRIDGE_FLAGS_SELF; | |
2670 | } | |
e5a55a89 | 2671 | |
c38e01b8 | 2672 | if (have_flags) |
2469ffd7 JF |
2673 | memcpy(nla_data(attr), &flags, sizeof(flags)); |
2674 | /* Generate event to notify upper layer of bridge change */ | |
2675 | if (!err) | |
c38e01b8 | 2676 | err = rtnl_bridge_notify(dev, oflags); |
e5a55a89 JF |
2677 | out: |
2678 | return err; | |
2679 | } | |
2680 | ||
661d2967 | 2681 | static int rtnl_bridge_dellink(struct sk_buff *skb, struct nlmsghdr *nlh) |
407af329 VY |
2682 | { |
2683 | struct net *net = sock_net(skb->sk); | |
2684 | struct ifinfomsg *ifm; | |
2685 | struct net_device *dev; | |
2686 | struct nlattr *br_spec, *attr = NULL; | |
2687 | int rem, err = -EOPNOTSUPP; | |
2688 | u16 oflags, flags = 0; | |
2689 | bool have_flags = false; | |
2690 | ||
2691 | if (nlmsg_len(nlh) < sizeof(*ifm)) | |
2692 | return -EINVAL; | |
2693 | ||
2694 | ifm = nlmsg_data(nlh); | |
2695 | if (ifm->ifi_family != AF_BRIDGE) | |
2696 | return -EPFNOSUPPORT; | |
2697 | ||
2698 | dev = __dev_get_by_index(net, ifm->ifi_index); | |
2699 | if (!dev) { | |
2700 | pr_info("PF_BRIDGE: RTM_SETLINK with unknown ifindex\n"); | |
2701 | return -ENODEV; | |
2702 | } | |
2703 | ||
2704 | br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); | |
2705 | if (br_spec) { | |
2706 | nla_for_each_nested(attr, br_spec, rem) { | |
2707 | if (nla_type(attr) == IFLA_BRIDGE_FLAGS) { | |
2708 | have_flags = true; | |
2709 | flags = nla_get_u16(attr); | |
2710 | break; | |
2711 | } | |
2712 | } | |
2713 | } | |
2714 | ||
2715 | oflags = flags; | |
2716 | ||
2717 | if (!flags || (flags & BRIDGE_FLAGS_MASTER)) { | |
2718 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); | |
2719 | ||
2720 | if (!br_dev || !br_dev->netdev_ops->ndo_bridge_dellink) { | |
2721 | err = -EOPNOTSUPP; | |
2722 | goto out; | |
2723 | } | |
2724 | ||
2725 | err = br_dev->netdev_ops->ndo_bridge_dellink(dev, nlh); | |
2726 | if (err) | |
2727 | goto out; | |
2728 | ||
2729 | flags &= ~BRIDGE_FLAGS_MASTER; | |
2730 | } | |
2731 | ||
2732 | if ((flags & BRIDGE_FLAGS_SELF)) { | |
2733 | if (!dev->netdev_ops->ndo_bridge_dellink) | |
2734 | err = -EOPNOTSUPP; | |
2735 | else | |
2736 | err = dev->netdev_ops->ndo_bridge_dellink(dev, nlh); | |
2737 | ||
2738 | if (!err) | |
2739 | flags &= ~BRIDGE_FLAGS_SELF; | |
2740 | } | |
2741 | ||
2742 | if (have_flags) | |
2743 | memcpy(nla_data(attr), &flags, sizeof(flags)); | |
2744 | /* Generate event to notify upper layer of bridge change */ | |
2745 | if (!err) | |
2746 | err = rtnl_bridge_notify(dev, oflags); | |
2747 | out: | |
2748 | return err; | |
2749 | } | |
2750 | ||
1da177e4 LT |
2751 | /* Process one rtnetlink message. */ |
2752 | ||
1d00a4eb | 2753 | static int rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh) |
1da177e4 | 2754 | { |
3b1e0a65 | 2755 | struct net *net = sock_net(skb->sk); |
e2849863 | 2756 | rtnl_doit_func doit; |
1da177e4 | 2757 | int sz_idx, kind; |
1da177e4 LT |
2758 | int family; |
2759 | int type; | |
2907c35f | 2760 | int err; |
1da177e4 | 2761 | |
1da177e4 | 2762 | type = nlh->nlmsg_type; |
1da177e4 | 2763 | if (type > RTM_MAX) |
038890fe | 2764 | return -EOPNOTSUPP; |
1da177e4 LT |
2765 | |
2766 | type -= RTM_BASE; | |
2767 | ||
2768 | /* All the messages must have at least 1 byte length */ | |
573ce260 | 2769 | if (nlmsg_len(nlh) < sizeof(struct rtgenmsg)) |
1da177e4 LT |
2770 | return 0; |
2771 | ||
573ce260 | 2772 | family = ((struct rtgenmsg *)nlmsg_data(nlh))->rtgen_family; |
1da177e4 LT |
2773 | sz_idx = type>>2; |
2774 | kind = type&3; | |
2775 | ||
dfc47ef8 | 2776 | if (kind != 2 && !ns_capable(net->user_ns, CAP_NET_ADMIN)) |
1d00a4eb | 2777 | return -EPERM; |
1da177e4 | 2778 | |
b8f3ab42 | 2779 | if (kind == 2 && nlh->nlmsg_flags&NLM_F_DUMP) { |
97c53cac | 2780 | struct sock *rtnl; |
e2849863 | 2781 | rtnl_dumpit_func dumpit; |
c7ac8679 GR |
2782 | rtnl_calcit_func calcit; |
2783 | u16 min_dump_alloc = 0; | |
1da177e4 | 2784 | |
e2849863 TG |
2785 | dumpit = rtnl_get_dumpit(family, type); |
2786 | if (dumpit == NULL) | |
038890fe | 2787 | return -EOPNOTSUPP; |
c7ac8679 GR |
2788 | calcit = rtnl_get_calcit(family, type); |
2789 | if (calcit) | |
115c9b81 | 2790 | min_dump_alloc = calcit(skb, nlh); |
9ac4a169 | 2791 | |
2907c35f | 2792 | __rtnl_unlock(); |
97c53cac | 2793 | rtnl = net->rtnl; |
80d326fa PNA |
2794 | { |
2795 | struct netlink_dump_control c = { | |
2796 | .dump = dumpit, | |
2797 | .min_dump_alloc = min_dump_alloc, | |
2798 | }; | |
2799 | err = netlink_dump_start(rtnl, skb, nlh, &c); | |
2800 | } | |
2907c35f ED |
2801 | rtnl_lock(); |
2802 | return err; | |
1da177e4 LT |
2803 | } |
2804 | ||
e2849863 TG |
2805 | doit = rtnl_get_doit(family, type); |
2806 | if (doit == NULL) | |
038890fe | 2807 | return -EOPNOTSUPP; |
1da177e4 | 2808 | |
661d2967 | 2809 | return doit(skb, nlh); |
1da177e4 LT |
2810 | } |
2811 | ||
cd40b7d3 | 2812 | static void rtnetlink_rcv(struct sk_buff *skb) |
1da177e4 | 2813 | { |
cd40b7d3 DL |
2814 | rtnl_lock(); |
2815 | netlink_rcv_skb(skb, &rtnetlink_rcv_msg); | |
2816 | rtnl_unlock(); | |
1da177e4 LT |
2817 | } |
2818 | ||
1da177e4 LT |
2819 | static int rtnetlink_event(struct notifier_block *this, unsigned long event, void *ptr) |
2820 | { | |
351638e7 | 2821 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
e9dc8653 | 2822 | |
1da177e4 | 2823 | switch (event) { |
1da177e4 LT |
2824 | case NETDEV_UP: |
2825 | case NETDEV_DOWN: | |
10de05af | 2826 | case NETDEV_PRE_UP: |
d90a909e EB |
2827 | case NETDEV_POST_INIT: |
2828 | case NETDEV_REGISTER: | |
1da177e4 | 2829 | case NETDEV_CHANGE: |
755d0e77 | 2830 | case NETDEV_PRE_TYPE_CHANGE: |
1da177e4 | 2831 | case NETDEV_GOING_DOWN: |
a2835763 | 2832 | case NETDEV_UNREGISTER: |
0115e8e3 | 2833 | case NETDEV_UNREGISTER_FINAL: |
ac3d3f81 AW |
2834 | case NETDEV_RELEASE: |
2835 | case NETDEV_JOIN: | |
1da177e4 LT |
2836 | break; |
2837 | default: | |
7f294054 | 2838 | rtmsg_ifinfo(RTM_NEWLINK, dev, 0, GFP_KERNEL); |
1da177e4 LT |
2839 | break; |
2840 | } | |
2841 | return NOTIFY_DONE; | |
2842 | } | |
2843 | ||
2844 | static struct notifier_block rtnetlink_dev_notifier = { | |
2845 | .notifier_call = rtnetlink_event, | |
2846 | }; | |
2847 | ||
97c53cac | 2848 | |
2c8c1e72 | 2849 | static int __net_init rtnetlink_net_init(struct net *net) |
97c53cac DL |
2850 | { |
2851 | struct sock *sk; | |
a31f2d17 PNA |
2852 | struct netlink_kernel_cfg cfg = { |
2853 | .groups = RTNLGRP_MAX, | |
2854 | .input = rtnetlink_rcv, | |
2855 | .cb_mutex = &rtnl_mutex, | |
9785e10a | 2856 | .flags = NL_CFG_F_NONROOT_RECV, |
a31f2d17 PNA |
2857 | }; |
2858 | ||
9f00d977 | 2859 | sk = netlink_kernel_create(net, NETLINK_ROUTE, &cfg); |
97c53cac DL |
2860 | if (!sk) |
2861 | return -ENOMEM; | |
97c53cac DL |
2862 | net->rtnl = sk; |
2863 | return 0; | |
2864 | } | |
2865 | ||
2c8c1e72 | 2866 | static void __net_exit rtnetlink_net_exit(struct net *net) |
97c53cac | 2867 | { |
775516bf DL |
2868 | netlink_kernel_release(net->rtnl); |
2869 | net->rtnl = NULL; | |
97c53cac DL |
2870 | } |
2871 | ||
2872 | static struct pernet_operations rtnetlink_net_ops = { | |
2873 | .init = rtnetlink_net_init, | |
2874 | .exit = rtnetlink_net_exit, | |
2875 | }; | |
2876 | ||
1da177e4 LT |
2877 | void __init rtnetlink_init(void) |
2878 | { | |
97c53cac | 2879 | if (register_pernet_subsys(&rtnetlink_net_ops)) |
1da177e4 | 2880 | panic("rtnetlink_init: cannot initialize rtnetlink\n"); |
97c53cac | 2881 | |
1da177e4 | 2882 | register_netdevice_notifier(&rtnetlink_dev_notifier); |
340d17fc | 2883 | |
c7ac8679 GR |
2884 | rtnl_register(PF_UNSPEC, RTM_GETLINK, rtnl_getlink, |
2885 | rtnl_dump_ifinfo, rtnl_calcit); | |
2886 | rtnl_register(PF_UNSPEC, RTM_SETLINK, rtnl_setlink, NULL, NULL); | |
2887 | rtnl_register(PF_UNSPEC, RTM_NEWLINK, rtnl_newlink, NULL, NULL); | |
2888 | rtnl_register(PF_UNSPEC, RTM_DELLINK, rtnl_dellink, NULL, NULL); | |
687ad8cc | 2889 | |
c7ac8679 GR |
2890 | rtnl_register(PF_UNSPEC, RTM_GETADDR, NULL, rtnl_dump_all, NULL); |
2891 | rtnl_register(PF_UNSPEC, RTM_GETROUTE, NULL, rtnl_dump_all, NULL); | |
77162022 JF |
2892 | |
2893 | rtnl_register(PF_BRIDGE, RTM_NEWNEIGH, rtnl_fdb_add, NULL, NULL); | |
2894 | rtnl_register(PF_BRIDGE, RTM_DELNEIGH, rtnl_fdb_del, NULL, NULL); | |
2895 | rtnl_register(PF_BRIDGE, RTM_GETNEIGH, NULL, rtnl_fdb_dump, NULL); | |
e5a55a89 JF |
2896 | |
2897 | rtnl_register(PF_BRIDGE, RTM_GETLINK, NULL, rtnl_bridge_getlink, NULL); | |
407af329 | 2898 | rtnl_register(PF_BRIDGE, RTM_DELLINK, rtnl_bridge_dellink, NULL, NULL); |
e5a55a89 | 2899 | rtnl_register(PF_BRIDGE, RTM_SETLINK, rtnl_bridge_setlink, NULL, NULL); |
1da177e4 LT |
2900 | } |
2901 |