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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 */ |
115c9b81 GR |
825 | + nla_total_size(ext_filter_mask |
826 | & RTEXT_FILTER_VF ? 4 : 0) /* IFLA_NUM_VF */ | |
827 | + rtnl_vfinfo_size(dev, ext_filter_mask) /* IFLA_VFINFO_LIST */ | |
57b61080 | 828 | + rtnl_port_size(dev) /* IFLA_VF_PORTS + IFLA_PORT_SELF */ |
f8ff182c | 829 | + rtnl_link_get_size(dev) /* IFLA_LINKINFO */ |
66cae9ed JP |
830 | + rtnl_link_get_af_size(dev) /* IFLA_AF_SPEC */ |
831 | + nla_total_size(MAX_PHYS_PORT_ID_LEN); /* IFLA_PHYS_PORT_ID */ | |
339bf98f TG |
832 | } |
833 | ||
57b61080 SF |
834 | static int rtnl_vf_ports_fill(struct sk_buff *skb, struct net_device *dev) |
835 | { | |
836 | struct nlattr *vf_ports; | |
837 | struct nlattr *vf_port; | |
838 | int vf; | |
839 | int err; | |
840 | ||
841 | vf_ports = nla_nest_start(skb, IFLA_VF_PORTS); | |
842 | if (!vf_ports) | |
843 | return -EMSGSIZE; | |
844 | ||
845 | for (vf = 0; vf < dev_num_vf(dev->dev.parent); vf++) { | |
846 | vf_port = nla_nest_start(skb, IFLA_VF_PORT); | |
8ca94183 SF |
847 | if (!vf_port) |
848 | goto nla_put_failure; | |
a6574349 DM |
849 | if (nla_put_u32(skb, IFLA_PORT_VF, vf)) |
850 | goto nla_put_failure; | |
57b61080 | 851 | err = dev->netdev_ops->ndo_get_vf_port(dev, vf, skb); |
8ca94183 SF |
852 | if (err == -EMSGSIZE) |
853 | goto nla_put_failure; | |
57b61080 | 854 | if (err) { |
57b61080 SF |
855 | nla_nest_cancel(skb, vf_port); |
856 | continue; | |
857 | } | |
858 | nla_nest_end(skb, vf_port); | |
859 | } | |
860 | ||
861 | nla_nest_end(skb, vf_ports); | |
862 | ||
863 | return 0; | |
8ca94183 SF |
864 | |
865 | nla_put_failure: | |
866 | nla_nest_cancel(skb, vf_ports); | |
867 | return -EMSGSIZE; | |
57b61080 SF |
868 | } |
869 | ||
870 | static int rtnl_port_self_fill(struct sk_buff *skb, struct net_device *dev) | |
871 | { | |
872 | struct nlattr *port_self; | |
873 | int err; | |
874 | ||
875 | port_self = nla_nest_start(skb, IFLA_PORT_SELF); | |
876 | if (!port_self) | |
877 | return -EMSGSIZE; | |
878 | ||
879 | err = dev->netdev_ops->ndo_get_vf_port(dev, PORT_SELF_VF, skb); | |
880 | if (err) { | |
881 | nla_nest_cancel(skb, port_self); | |
8ca94183 | 882 | return (err == -EMSGSIZE) ? err : 0; |
57b61080 SF |
883 | } |
884 | ||
885 | nla_nest_end(skb, port_self); | |
886 | ||
887 | return 0; | |
888 | } | |
889 | ||
890 | static int rtnl_port_fill(struct sk_buff *skb, struct net_device *dev) | |
891 | { | |
892 | int err; | |
893 | ||
894 | if (!dev->netdev_ops->ndo_get_vf_port || !dev->dev.parent) | |
895 | return 0; | |
896 | ||
897 | err = rtnl_port_self_fill(skb, dev); | |
898 | if (err) | |
899 | return err; | |
900 | ||
901 | if (dev_num_vf(dev->dev.parent)) { | |
902 | err = rtnl_vf_ports_fill(skb, dev); | |
903 | if (err) | |
904 | return err; | |
905 | } | |
906 | ||
907 | return 0; | |
908 | } | |
909 | ||
66cae9ed JP |
910 | static int rtnl_phys_port_id_fill(struct sk_buff *skb, struct net_device *dev) |
911 | { | |
912 | int err; | |
913 | struct netdev_phys_port_id ppid; | |
914 | ||
915 | err = dev_get_phys_port_id(dev, &ppid); | |
916 | if (err) { | |
917 | if (err == -EOPNOTSUPP) | |
918 | return 0; | |
919 | return err; | |
920 | } | |
921 | ||
922 | if (nla_put(skb, IFLA_PHYS_PORT_ID, ppid.id_len, ppid.id)) | |
923 | return -EMSGSIZE; | |
924 | ||
925 | return 0; | |
926 | } | |
927 | ||
b60c5115 | 928 | static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev, |
575c3e2a | 929 | int type, u32 pid, u32 seq, u32 change, |
115c9b81 | 930 | unsigned int flags, u32 ext_filter_mask) |
b60c5115 TG |
931 | { |
932 | struct ifinfomsg *ifm; | |
933 | struct nlmsghdr *nlh; | |
28172739 | 934 | struct rtnl_link_stats64 temp; |
be1f3c2c | 935 | const struct rtnl_link_stats64 *stats; |
f8ff182c TG |
936 | struct nlattr *attr, *af_spec; |
937 | struct rtnl_af_ops *af_ops; | |
898e5061 | 938 | struct net_device *upper_dev = netdev_master_upper_dev_get(dev); |
1da177e4 | 939 | |
2907c35f | 940 | ASSERT_RTNL(); |
b60c5115 TG |
941 | nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ifm), flags); |
942 | if (nlh == NULL) | |
26932566 | 943 | return -EMSGSIZE; |
1da177e4 | 944 | |
b60c5115 TG |
945 | ifm = nlmsg_data(nlh); |
946 | ifm->ifi_family = AF_UNSPEC; | |
947 | ifm->__ifi_pad = 0; | |
948 | ifm->ifi_type = dev->type; | |
949 | ifm->ifi_index = dev->ifindex; | |
950 | ifm->ifi_flags = dev_get_flags(dev); | |
951 | ifm->ifi_change = change; | |
952 | ||
a6574349 DM |
953 | if (nla_put_string(skb, IFLA_IFNAME, dev->name) || |
954 | nla_put_u32(skb, IFLA_TXQLEN, dev->tx_queue_len) || | |
955 | nla_put_u8(skb, IFLA_OPERSTATE, | |
956 | netif_running(dev) ? dev->operstate : IF_OPER_DOWN) || | |
957 | nla_put_u8(skb, IFLA_LINKMODE, dev->link_mode) || | |
958 | nla_put_u32(skb, IFLA_MTU, dev->mtu) || | |
959 | nla_put_u32(skb, IFLA_GROUP, dev->group) || | |
edbc0bb3 | 960 | nla_put_u32(skb, IFLA_PROMISCUITY, dev->promiscuity) || |
76ff5cc9 | 961 | nla_put_u32(skb, IFLA_NUM_TX_QUEUES, dev->num_tx_queues) || |
1d69c2b3 | 962 | #ifdef CONFIG_RPS |
76ff5cc9 | 963 | nla_put_u32(skb, IFLA_NUM_RX_QUEUES, dev->num_rx_queues) || |
1d69c2b3 | 964 | #endif |
a6574349 DM |
965 | (dev->ifindex != dev->iflink && |
966 | nla_put_u32(skb, IFLA_LINK, dev->iflink)) || | |
898e5061 JP |
967 | (upper_dev && |
968 | nla_put_u32(skb, IFLA_MASTER, upper_dev->ifindex)) || | |
9a57247f | 969 | nla_put_u8(skb, IFLA_CARRIER, netif_carrier_ok(dev)) || |
a6574349 DM |
970 | (dev->qdisc && |
971 | nla_put_string(skb, IFLA_QDISC, dev->qdisc->ops->id)) || | |
972 | (dev->ifalias && | |
973 | nla_put_string(skb, IFLA_IFALIAS, dev->ifalias))) | |
974 | goto nla_put_failure; | |
0b815a1a | 975 | |
1da177e4 LT |
976 | if (1) { |
977 | struct rtnl_link_ifmap map = { | |
978 | .mem_start = dev->mem_start, | |
979 | .mem_end = dev->mem_end, | |
980 | .base_addr = dev->base_addr, | |
981 | .irq = dev->irq, | |
982 | .dma = dev->dma, | |
983 | .port = dev->if_port, | |
984 | }; | |
a6574349 DM |
985 | if (nla_put(skb, IFLA_MAP, sizeof(map), &map)) |
986 | goto nla_put_failure; | |
1da177e4 LT |
987 | } |
988 | ||
989 | if (dev->addr_len) { | |
a6574349 DM |
990 | if (nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr) || |
991 | nla_put(skb, IFLA_BROADCAST, dev->addr_len, dev->broadcast)) | |
992 | goto nla_put_failure; | |
1da177e4 LT |
993 | } |
994 | ||
66cae9ed JP |
995 | if (rtnl_phys_port_id_fill(skb, dev)) |
996 | goto nla_put_failure; | |
997 | ||
96e74088 PE |
998 | attr = nla_reserve(skb, IFLA_STATS, |
999 | sizeof(struct rtnl_link_stats)); | |
1000 | if (attr == NULL) | |
1001 | goto nla_put_failure; | |
b60c5115 | 1002 | |
28172739 | 1003 | stats = dev_get_stats(dev, &temp); |
96e74088 | 1004 | copy_rtnl_link_stats(nla_data(attr), stats); |
1da177e4 | 1005 | |
10708f37 JE |
1006 | attr = nla_reserve(skb, IFLA_STATS64, |
1007 | sizeof(struct rtnl_link_stats64)); | |
1008 | if (attr == NULL) | |
1009 | goto nla_put_failure; | |
10708f37 JE |
1010 | copy_rtnl_link_stats64(nla_data(attr), stats); |
1011 | ||
a6574349 DM |
1012 | if (dev->dev.parent && (ext_filter_mask & RTEXT_FILTER_VF) && |
1013 | nla_put_u32(skb, IFLA_NUM_VF, dev_num_vf(dev->dev.parent))) | |
1014 | goto nla_put_failure; | |
57b61080 | 1015 | |
115c9b81 GR |
1016 | if (dev->netdev_ops->ndo_get_vf_config && dev->dev.parent |
1017 | && (ext_filter_mask & RTEXT_FILTER_VF)) { | |
ebc08a6f | 1018 | int i; |
ebc08a6f | 1019 | |
c02db8c6 CW |
1020 | struct nlattr *vfinfo, *vf; |
1021 | int num_vfs = dev_num_vf(dev->dev.parent); | |
1022 | ||
c02db8c6 CW |
1023 | vfinfo = nla_nest_start(skb, IFLA_VFINFO_LIST); |
1024 | if (!vfinfo) | |
1025 | goto nla_put_failure; | |
1026 | for (i = 0; i < num_vfs; i++) { | |
1027 | struct ifla_vf_info ivi; | |
1028 | struct ifla_vf_mac vf_mac; | |
1029 | struct ifla_vf_vlan vf_vlan; | |
1030 | struct ifla_vf_tx_rate vf_tx_rate; | |
5f8444a3 | 1031 | struct ifla_vf_spoofchk vf_spoofchk; |
1d8faf48 | 1032 | struct ifla_vf_link_state vf_linkstate; |
5f8444a3 GR |
1033 | |
1034 | /* | |
1035 | * Not all SR-IOV capable drivers support the | |
1036 | * spoofcheck query. Preset to -1 so the user | |
1037 | * space tool can detect that the driver didn't | |
1038 | * report anything. | |
1039 | */ | |
1040 | ivi.spoofchk = -1; | |
84d73cd3 | 1041 | memset(ivi.mac, 0, sizeof(ivi.mac)); |
1d8faf48 RE |
1042 | /* The default value for VF link state is "auto" |
1043 | * IFLA_VF_LINK_STATE_AUTO which equals zero | |
1044 | */ | |
1045 | ivi.linkstate = 0; | |
ebc08a6f WM |
1046 | if (dev->netdev_ops->ndo_get_vf_config(dev, i, &ivi)) |
1047 | break; | |
5f8444a3 GR |
1048 | vf_mac.vf = |
1049 | vf_vlan.vf = | |
1050 | vf_tx_rate.vf = | |
1d8faf48 RE |
1051 | vf_spoofchk.vf = |
1052 | vf_linkstate.vf = ivi.vf; | |
5f8444a3 | 1053 | |
c02db8c6 CW |
1054 | memcpy(vf_mac.mac, ivi.mac, sizeof(ivi.mac)); |
1055 | vf_vlan.vlan = ivi.vlan; | |
1056 | vf_vlan.qos = ivi.qos; | |
1057 | vf_tx_rate.rate = ivi.tx_rate; | |
5f8444a3 | 1058 | vf_spoofchk.setting = ivi.spoofchk; |
1d8faf48 | 1059 | vf_linkstate.link_state = ivi.linkstate; |
c02db8c6 CW |
1060 | vf = nla_nest_start(skb, IFLA_VF_INFO); |
1061 | if (!vf) { | |
1062 | nla_nest_cancel(skb, vfinfo); | |
1063 | goto nla_put_failure; | |
1064 | } | |
a6574349 DM |
1065 | if (nla_put(skb, IFLA_VF_MAC, sizeof(vf_mac), &vf_mac) || |
1066 | nla_put(skb, IFLA_VF_VLAN, sizeof(vf_vlan), &vf_vlan) || | |
1067 | nla_put(skb, IFLA_VF_TX_RATE, sizeof(vf_tx_rate), | |
1068 | &vf_tx_rate) || | |
1069 | nla_put(skb, IFLA_VF_SPOOFCHK, sizeof(vf_spoofchk), | |
1d8faf48 RE |
1070 | &vf_spoofchk) || |
1071 | nla_put(skb, IFLA_VF_LINK_STATE, sizeof(vf_linkstate), | |
1072 | &vf_linkstate)) | |
a6574349 | 1073 | goto nla_put_failure; |
c02db8c6 | 1074 | nla_nest_end(skb, vf); |
ebc08a6f | 1075 | } |
c02db8c6 | 1076 | nla_nest_end(skb, vfinfo); |
ebc08a6f | 1077 | } |
57b61080 SF |
1078 | |
1079 | if (rtnl_port_fill(skb, dev)) | |
1080 | goto nla_put_failure; | |
1081 | ||
ba7d49b1 | 1082 | if (dev->rtnl_link_ops || rtnl_have_link_slave_info(dev)) { |
38f7b870 PM |
1083 | if (rtnl_link_fill(skb, dev) < 0) |
1084 | goto nla_put_failure; | |
1085 | } | |
1086 | ||
f8ff182c TG |
1087 | if (!(af_spec = nla_nest_start(skb, IFLA_AF_SPEC))) |
1088 | goto nla_put_failure; | |
1089 | ||
1090 | list_for_each_entry(af_ops, &rtnl_af_ops, list) { | |
1091 | if (af_ops->fill_link_af) { | |
1092 | struct nlattr *af; | |
1093 | int err; | |
1094 | ||
1095 | if (!(af = nla_nest_start(skb, af_ops->family))) | |
1096 | goto nla_put_failure; | |
1097 | ||
1098 | err = af_ops->fill_link_af(skb, dev); | |
1099 | ||
1100 | /* | |
1101 | * Caller may return ENODATA to indicate that there | |
1102 | * was no data to be dumped. This is not an error, it | |
1103 | * means we should trim the attribute header and | |
1104 | * continue. | |
1105 | */ | |
1106 | if (err == -ENODATA) | |
1107 | nla_nest_cancel(skb, af); | |
1108 | else if (err < 0) | |
1109 | goto nla_put_failure; | |
1110 | ||
1111 | nla_nest_end(skb, af); | |
1112 | } | |
1113 | } | |
1114 | ||
1115 | nla_nest_end(skb, af_spec); | |
1116 | ||
b60c5115 TG |
1117 | return nlmsg_end(skb, nlh); |
1118 | ||
1119 | nla_put_failure: | |
26932566 PM |
1120 | nlmsg_cancel(skb, nlh); |
1121 | return -EMSGSIZE; | |
1da177e4 LT |
1122 | } |
1123 | ||
b60c5115 | 1124 | static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb) |
1da177e4 | 1125 | { |
3b1e0a65 | 1126 | struct net *net = sock_net(skb->sk); |
7c28bd0b ED |
1127 | int h, s_h; |
1128 | int idx = 0, s_idx; | |
1da177e4 | 1129 | struct net_device *dev; |
7c28bd0b | 1130 | struct hlist_head *head; |
115c9b81 GR |
1131 | struct nlattr *tb[IFLA_MAX+1]; |
1132 | u32 ext_filter_mask = 0; | |
7c28bd0b ED |
1133 | |
1134 | s_h = cb->args[0]; | |
1135 | s_idx = cb->args[1]; | |
1136 | ||
e67f88dd | 1137 | rcu_read_lock(); |
4e985ada TG |
1138 | cb->seq = net->dev_base_seq; |
1139 | ||
88c5b5ce | 1140 | if (nlmsg_parse(cb->nlh, sizeof(struct ifinfomsg), tb, IFLA_MAX, |
a4b64fbe | 1141 | ifla_policy) >= 0) { |
115c9b81 | 1142 | |
a4b64fbe ED |
1143 | if (tb[IFLA_EXT_MASK]) |
1144 | ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]); | |
1145 | } | |
115c9b81 | 1146 | |
7c28bd0b ED |
1147 | for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) { |
1148 | idx = 0; | |
1149 | head = &net->dev_index_head[h]; | |
b67bfe0d | 1150 | hlist_for_each_entry_rcu(dev, head, index_hlist) { |
7c28bd0b ED |
1151 | if (idx < s_idx) |
1152 | goto cont; | |
1153 | if (rtnl_fill_ifinfo(skb, dev, RTM_NEWLINK, | |
15e47304 | 1154 | NETLINK_CB(cb->skb).portid, |
7c28bd0b | 1155 | cb->nlh->nlmsg_seq, 0, |
115c9b81 GR |
1156 | NLM_F_MULTI, |
1157 | ext_filter_mask) <= 0) | |
7c28bd0b | 1158 | goto out; |
4e985ada TG |
1159 | |
1160 | nl_dump_check_consistent(cb, nlmsg_hdr(skb)); | |
7562f876 | 1161 | cont: |
7c28bd0b ED |
1162 | idx++; |
1163 | } | |
1da177e4 | 1164 | } |
7c28bd0b | 1165 | out: |
e67f88dd | 1166 | rcu_read_unlock(); |
7c28bd0b ED |
1167 | cb->args[1] = idx; |
1168 | cb->args[0] = h; | |
1da177e4 LT |
1169 | |
1170 | return skb->len; | |
1171 | } | |
1172 | ||
e7199288 | 1173 | const struct nla_policy ifla_policy[IFLA_MAX+1] = { |
5176f91e | 1174 | [IFLA_IFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ-1 }, |
38f7b870 PM |
1175 | [IFLA_ADDRESS] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN }, |
1176 | [IFLA_BROADCAST] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN }, | |
5176f91e | 1177 | [IFLA_MAP] = { .len = sizeof(struct rtnl_link_ifmap) }, |
da5e0494 | 1178 | [IFLA_MTU] = { .type = NLA_U32 }, |
76e87306 | 1179 | [IFLA_LINK] = { .type = NLA_U32 }, |
fbaec0ea | 1180 | [IFLA_MASTER] = { .type = NLA_U32 }, |
9a57247f | 1181 | [IFLA_CARRIER] = { .type = NLA_U8 }, |
da5e0494 TG |
1182 | [IFLA_TXQLEN] = { .type = NLA_U32 }, |
1183 | [IFLA_WEIGHT] = { .type = NLA_U32 }, | |
1184 | [IFLA_OPERSTATE] = { .type = NLA_U8 }, | |
1185 | [IFLA_LINKMODE] = { .type = NLA_U8 }, | |
76e87306 | 1186 | [IFLA_LINKINFO] = { .type = NLA_NESTED }, |
d8a5ec67 | 1187 | [IFLA_NET_NS_PID] = { .type = NLA_U32 }, |
f0630529 | 1188 | [IFLA_NET_NS_FD] = { .type = NLA_U32 }, |
0b815a1a | 1189 | [IFLA_IFALIAS] = { .type = NLA_STRING, .len = IFALIASZ-1 }, |
c02db8c6 | 1190 | [IFLA_VFINFO_LIST] = {. type = NLA_NESTED }, |
57b61080 SF |
1191 | [IFLA_VF_PORTS] = { .type = NLA_NESTED }, |
1192 | [IFLA_PORT_SELF] = { .type = NLA_NESTED }, | |
f8ff182c | 1193 | [IFLA_AF_SPEC] = { .type = NLA_NESTED }, |
115c9b81 | 1194 | [IFLA_EXT_MASK] = { .type = NLA_U32 }, |
edbc0bb3 | 1195 | [IFLA_PROMISCUITY] = { .type = NLA_U32 }, |
76ff5cc9 JP |
1196 | [IFLA_NUM_TX_QUEUES] = { .type = NLA_U32 }, |
1197 | [IFLA_NUM_RX_QUEUES] = { .type = NLA_U32 }, | |
66cae9ed | 1198 | [IFLA_PHYS_PORT_ID] = { .type = NLA_BINARY, .len = MAX_PHYS_PORT_ID_LEN }, |
da5e0494 | 1199 | }; |
e0d087af | 1200 | EXPORT_SYMBOL(ifla_policy); |
da5e0494 | 1201 | |
38f7b870 PM |
1202 | static const struct nla_policy ifla_info_policy[IFLA_INFO_MAX+1] = { |
1203 | [IFLA_INFO_KIND] = { .type = NLA_STRING }, | |
1204 | [IFLA_INFO_DATA] = { .type = NLA_NESTED }, | |
ba7d49b1 JP |
1205 | [IFLA_INFO_SLAVE_KIND] = { .type = NLA_STRING }, |
1206 | [IFLA_INFO_SLAVE_DATA] = { .type = NLA_NESTED }, | |
38f7b870 PM |
1207 | }; |
1208 | ||
c02db8c6 CW |
1209 | static const struct nla_policy ifla_vfinfo_policy[IFLA_VF_INFO_MAX+1] = { |
1210 | [IFLA_VF_INFO] = { .type = NLA_NESTED }, | |
1211 | }; | |
1212 | ||
1213 | static const struct nla_policy ifla_vf_policy[IFLA_VF_MAX+1] = { | |
1214 | [IFLA_VF_MAC] = { .type = NLA_BINARY, | |
1215 | .len = sizeof(struct ifla_vf_mac) }, | |
1216 | [IFLA_VF_VLAN] = { .type = NLA_BINARY, | |
1217 | .len = sizeof(struct ifla_vf_vlan) }, | |
1218 | [IFLA_VF_TX_RATE] = { .type = NLA_BINARY, | |
1219 | .len = sizeof(struct ifla_vf_tx_rate) }, | |
48752f65 GR |
1220 | [IFLA_VF_SPOOFCHK] = { .type = NLA_BINARY, |
1221 | .len = sizeof(struct ifla_vf_spoofchk) }, | |
c02db8c6 CW |
1222 | }; |
1223 | ||
57b61080 SF |
1224 | static const struct nla_policy ifla_port_policy[IFLA_PORT_MAX+1] = { |
1225 | [IFLA_PORT_VF] = { .type = NLA_U32 }, | |
1226 | [IFLA_PORT_PROFILE] = { .type = NLA_STRING, | |
1227 | .len = PORT_PROFILE_MAX }, | |
1228 | [IFLA_PORT_VSI_TYPE] = { .type = NLA_BINARY, | |
1229 | .len = sizeof(struct ifla_port_vsi)}, | |
1230 | [IFLA_PORT_INSTANCE_UUID] = { .type = NLA_BINARY, | |
1231 | .len = PORT_UUID_MAX }, | |
1232 | [IFLA_PORT_HOST_UUID] = { .type = NLA_STRING, | |
1233 | .len = PORT_UUID_MAX }, | |
1234 | [IFLA_PORT_REQUEST] = { .type = NLA_U8, }, | |
1235 | [IFLA_PORT_RESPONSE] = { .type = NLA_U16, }, | |
1236 | }; | |
1237 | ||
81adee47 EB |
1238 | struct net *rtnl_link_get_net(struct net *src_net, struct nlattr *tb[]) |
1239 | { | |
1240 | struct net *net; | |
1241 | /* Examine the link attributes and figure out which | |
1242 | * network namespace we are talking about. | |
1243 | */ | |
1244 | if (tb[IFLA_NET_NS_PID]) | |
1245 | net = get_net_ns_by_pid(nla_get_u32(tb[IFLA_NET_NS_PID])); | |
f0630529 EB |
1246 | else if (tb[IFLA_NET_NS_FD]) |
1247 | net = get_net_ns_by_fd(nla_get_u32(tb[IFLA_NET_NS_FD])); | |
81adee47 EB |
1248 | else |
1249 | net = get_net(src_net); | |
1250 | return net; | |
1251 | } | |
1252 | EXPORT_SYMBOL(rtnl_link_get_net); | |
1253 | ||
1840bb13 TG |
1254 | static int validate_linkmsg(struct net_device *dev, struct nlattr *tb[]) |
1255 | { | |
1256 | if (dev) { | |
1257 | if (tb[IFLA_ADDRESS] && | |
1258 | nla_len(tb[IFLA_ADDRESS]) < dev->addr_len) | |
1259 | return -EINVAL; | |
1260 | ||
1261 | if (tb[IFLA_BROADCAST] && | |
1262 | nla_len(tb[IFLA_BROADCAST]) < dev->addr_len) | |
1263 | return -EINVAL; | |
1264 | } | |
1265 | ||
cf7afbfe TG |
1266 | if (tb[IFLA_AF_SPEC]) { |
1267 | struct nlattr *af; | |
1268 | int rem, err; | |
1269 | ||
1270 | nla_for_each_nested(af, tb[IFLA_AF_SPEC], rem) { | |
1271 | const struct rtnl_af_ops *af_ops; | |
1272 | ||
1273 | if (!(af_ops = rtnl_af_lookup(nla_type(af)))) | |
1274 | return -EAFNOSUPPORT; | |
1275 | ||
1276 | if (!af_ops->set_link_af) | |
1277 | return -EOPNOTSUPP; | |
1278 | ||
1279 | if (af_ops->validate_link_af) { | |
6d3a9a68 | 1280 | err = af_ops->validate_link_af(dev, af); |
cf7afbfe TG |
1281 | if (err < 0) |
1282 | return err; | |
1283 | } | |
1284 | } | |
1285 | } | |
1286 | ||
1840bb13 TG |
1287 | return 0; |
1288 | } | |
1289 | ||
c02db8c6 CW |
1290 | static int do_setvfinfo(struct net_device *dev, struct nlattr *attr) |
1291 | { | |
1292 | int rem, err = -EINVAL; | |
1293 | struct nlattr *vf; | |
1294 | const struct net_device_ops *ops = dev->netdev_ops; | |
1295 | ||
1296 | nla_for_each_nested(vf, attr, rem) { | |
1297 | switch (nla_type(vf)) { | |
1298 | case IFLA_VF_MAC: { | |
1299 | struct ifla_vf_mac *ivm; | |
1300 | ivm = nla_data(vf); | |
1301 | err = -EOPNOTSUPP; | |
1302 | if (ops->ndo_set_vf_mac) | |
1303 | err = ops->ndo_set_vf_mac(dev, ivm->vf, | |
1304 | ivm->mac); | |
1305 | break; | |
1306 | } | |
1307 | case IFLA_VF_VLAN: { | |
1308 | struct ifla_vf_vlan *ivv; | |
1309 | ivv = nla_data(vf); | |
1310 | err = -EOPNOTSUPP; | |
1311 | if (ops->ndo_set_vf_vlan) | |
1312 | err = ops->ndo_set_vf_vlan(dev, ivv->vf, | |
1313 | ivv->vlan, | |
1314 | ivv->qos); | |
1315 | break; | |
1316 | } | |
1317 | case IFLA_VF_TX_RATE: { | |
1318 | struct ifla_vf_tx_rate *ivt; | |
1319 | ivt = nla_data(vf); | |
1320 | err = -EOPNOTSUPP; | |
1321 | if (ops->ndo_set_vf_tx_rate) | |
1322 | err = ops->ndo_set_vf_tx_rate(dev, ivt->vf, | |
1323 | ivt->rate); | |
1324 | break; | |
1325 | } | |
5f8444a3 GR |
1326 | case IFLA_VF_SPOOFCHK: { |
1327 | struct ifla_vf_spoofchk *ivs; | |
1328 | ivs = nla_data(vf); | |
1329 | err = -EOPNOTSUPP; | |
1330 | if (ops->ndo_set_vf_spoofchk) | |
1331 | err = ops->ndo_set_vf_spoofchk(dev, ivs->vf, | |
1332 | ivs->setting); | |
1333 | break; | |
1334 | } | |
1d8faf48 RE |
1335 | case IFLA_VF_LINK_STATE: { |
1336 | struct ifla_vf_link_state *ivl; | |
1337 | ivl = nla_data(vf); | |
1338 | err = -EOPNOTSUPP; | |
1339 | if (ops->ndo_set_vf_link_state) | |
1340 | err = ops->ndo_set_vf_link_state(dev, ivl->vf, | |
1341 | ivl->link_state); | |
1342 | break; | |
1343 | } | |
c02db8c6 CW |
1344 | default: |
1345 | err = -EINVAL; | |
1346 | break; | |
1347 | } | |
1348 | if (err) | |
1349 | break; | |
1350 | } | |
1351 | return err; | |
1352 | } | |
1353 | ||
fbaec0ea JP |
1354 | static int do_set_master(struct net_device *dev, int ifindex) |
1355 | { | |
898e5061 | 1356 | struct net_device *upper_dev = netdev_master_upper_dev_get(dev); |
fbaec0ea JP |
1357 | const struct net_device_ops *ops; |
1358 | int err; | |
1359 | ||
898e5061 JP |
1360 | if (upper_dev) { |
1361 | if (upper_dev->ifindex == ifindex) | |
fbaec0ea | 1362 | return 0; |
898e5061 | 1363 | ops = upper_dev->netdev_ops; |
fbaec0ea | 1364 | if (ops->ndo_del_slave) { |
898e5061 | 1365 | err = ops->ndo_del_slave(upper_dev, dev); |
fbaec0ea JP |
1366 | if (err) |
1367 | return err; | |
1368 | } else { | |
1369 | return -EOPNOTSUPP; | |
1370 | } | |
1371 | } | |
1372 | ||
1373 | if (ifindex) { | |
898e5061 JP |
1374 | upper_dev = __dev_get_by_index(dev_net(dev), ifindex); |
1375 | if (!upper_dev) | |
fbaec0ea | 1376 | return -EINVAL; |
898e5061 | 1377 | ops = upper_dev->netdev_ops; |
fbaec0ea | 1378 | if (ops->ndo_add_slave) { |
898e5061 | 1379 | err = ops->ndo_add_slave(upper_dev, dev); |
fbaec0ea JP |
1380 | if (err) |
1381 | return err; | |
1382 | } else { | |
1383 | return -EOPNOTSUPP; | |
1384 | } | |
1385 | } | |
1386 | return 0; | |
1387 | } | |
1388 | ||
0157f60c | 1389 | static int do_setlink(struct net_device *dev, struct ifinfomsg *ifm, |
38f7b870 | 1390 | struct nlattr **tb, char *ifname, int modified) |
1da177e4 | 1391 | { |
d314774c | 1392 | const struct net_device_ops *ops = dev->netdev_ops; |
0157f60c | 1393 | int err; |
1da177e4 | 1394 | |
f0630529 | 1395 | if (tb[IFLA_NET_NS_PID] || tb[IFLA_NET_NS_FD]) { |
81adee47 | 1396 | struct net *net = rtnl_link_get_net(dev_net(dev), tb); |
d8a5ec67 EB |
1397 | if (IS_ERR(net)) { |
1398 | err = PTR_ERR(net); | |
1399 | goto errout; | |
1400 | } | |
b51642f6 EB |
1401 | if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) { |
1402 | err = -EPERM; | |
1403 | goto errout; | |
1404 | } | |
d8a5ec67 EB |
1405 | err = dev_change_net_namespace(dev, net, ifname); |
1406 | put_net(net); | |
1407 | if (err) | |
1408 | goto errout; | |
1409 | modified = 1; | |
1410 | } | |
1411 | ||
da5e0494 | 1412 | if (tb[IFLA_MAP]) { |
1da177e4 LT |
1413 | struct rtnl_link_ifmap *u_map; |
1414 | struct ifmap k_map; | |
1415 | ||
d314774c | 1416 | if (!ops->ndo_set_config) { |
1da177e4 | 1417 | err = -EOPNOTSUPP; |
0157f60c | 1418 | goto errout; |
1da177e4 LT |
1419 | } |
1420 | ||
1421 | if (!netif_device_present(dev)) { | |
1422 | err = -ENODEV; | |
0157f60c | 1423 | goto errout; |
1da177e4 | 1424 | } |
1da177e4 | 1425 | |
da5e0494 | 1426 | u_map = nla_data(tb[IFLA_MAP]); |
1da177e4 LT |
1427 | k_map.mem_start = (unsigned long) u_map->mem_start; |
1428 | k_map.mem_end = (unsigned long) u_map->mem_end; | |
1429 | k_map.base_addr = (unsigned short) u_map->base_addr; | |
1430 | k_map.irq = (unsigned char) u_map->irq; | |
1431 | k_map.dma = (unsigned char) u_map->dma; | |
1432 | k_map.port = (unsigned char) u_map->port; | |
1433 | ||
d314774c | 1434 | err = ops->ndo_set_config(dev, &k_map); |
da5e0494 | 1435 | if (err < 0) |
0157f60c | 1436 | goto errout; |
1da177e4 | 1437 | |
da5e0494 | 1438 | modified = 1; |
1da177e4 LT |
1439 | } |
1440 | ||
da5e0494 | 1441 | if (tb[IFLA_ADDRESS]) { |
70f8e78e DM |
1442 | struct sockaddr *sa; |
1443 | int len; | |
1444 | ||
70f8e78e DM |
1445 | len = sizeof(sa_family_t) + dev->addr_len; |
1446 | sa = kmalloc(len, GFP_KERNEL); | |
1447 | if (!sa) { | |
1448 | err = -ENOMEM; | |
0157f60c | 1449 | goto errout; |
70f8e78e DM |
1450 | } |
1451 | sa->sa_family = dev->type; | |
da5e0494 | 1452 | memcpy(sa->sa_data, nla_data(tb[IFLA_ADDRESS]), |
70f8e78e | 1453 | dev->addr_len); |
e7c3273e | 1454 | err = dev_set_mac_address(dev, sa); |
70f8e78e | 1455 | kfree(sa); |
1da177e4 | 1456 | if (err) |
0157f60c | 1457 | goto errout; |
da5e0494 | 1458 | modified = 1; |
1da177e4 LT |
1459 | } |
1460 | ||
da5e0494 TG |
1461 | if (tb[IFLA_MTU]) { |
1462 | err = dev_set_mtu(dev, nla_get_u32(tb[IFLA_MTU])); | |
1463 | if (err < 0) | |
0157f60c | 1464 | goto errout; |
da5e0494 | 1465 | modified = 1; |
1da177e4 LT |
1466 | } |
1467 | ||
cbda10fa VD |
1468 | if (tb[IFLA_GROUP]) { |
1469 | dev_set_group(dev, nla_get_u32(tb[IFLA_GROUP])); | |
1470 | modified = 1; | |
1471 | } | |
1472 | ||
da5e0494 TG |
1473 | /* |
1474 | * Interface selected by interface index but interface | |
1475 | * name provided implies that a name change has been | |
1476 | * requested. | |
1477 | */ | |
51055be8 | 1478 | if (ifm->ifi_index > 0 && ifname[0]) { |
da5e0494 TG |
1479 | err = dev_change_name(dev, ifname); |
1480 | if (err < 0) | |
0157f60c | 1481 | goto errout; |
da5e0494 | 1482 | modified = 1; |
1da177e4 LT |
1483 | } |
1484 | ||
0b815a1a SH |
1485 | if (tb[IFLA_IFALIAS]) { |
1486 | err = dev_set_alias(dev, nla_data(tb[IFLA_IFALIAS]), | |
1487 | nla_len(tb[IFLA_IFALIAS])); | |
1488 | if (err < 0) | |
1489 | goto errout; | |
1490 | modified = 1; | |
1491 | } | |
1492 | ||
da5e0494 TG |
1493 | if (tb[IFLA_BROADCAST]) { |
1494 | nla_memcpy(dev->broadcast, tb[IFLA_BROADCAST], dev->addr_len); | |
e7c3273e | 1495 | call_netdevice_notifiers(NETDEV_CHANGEADDR, dev); |
1da177e4 LT |
1496 | } |
1497 | ||
83b496e9 | 1498 | if (ifm->ifi_flags || ifm->ifi_change) { |
3729d502 | 1499 | err = dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm)); |
5f9021cf JB |
1500 | if (err < 0) |
1501 | goto errout; | |
83b496e9 | 1502 | } |
1da177e4 | 1503 | |
fbaec0ea JP |
1504 | if (tb[IFLA_MASTER]) { |
1505 | err = do_set_master(dev, nla_get_u32(tb[IFLA_MASTER])); | |
1506 | if (err) | |
1507 | goto errout; | |
1508 | modified = 1; | |
1509 | } | |
1510 | ||
9a57247f JP |
1511 | if (tb[IFLA_CARRIER]) { |
1512 | err = dev_change_carrier(dev, nla_get_u8(tb[IFLA_CARRIER])); | |
1513 | if (err) | |
1514 | goto errout; | |
1515 | modified = 1; | |
1516 | } | |
1517 | ||
93b2d4a2 DM |
1518 | if (tb[IFLA_TXQLEN]) |
1519 | dev->tx_queue_len = nla_get_u32(tb[IFLA_TXQLEN]); | |
b00055aa | 1520 | |
da5e0494 | 1521 | if (tb[IFLA_OPERSTATE]) |
93b2d4a2 | 1522 | set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE])); |
b00055aa | 1523 | |
da5e0494 | 1524 | if (tb[IFLA_LINKMODE]) { |
93b2d4a2 DM |
1525 | write_lock_bh(&dev_base_lock); |
1526 | dev->link_mode = nla_get_u8(tb[IFLA_LINKMODE]); | |
1527 | write_unlock_bh(&dev_base_lock); | |
b00055aa SR |
1528 | } |
1529 | ||
c02db8c6 CW |
1530 | if (tb[IFLA_VFINFO_LIST]) { |
1531 | struct nlattr *attr; | |
1532 | int rem; | |
1533 | nla_for_each_nested(attr, tb[IFLA_VFINFO_LIST], rem) { | |
253683bb DH |
1534 | if (nla_type(attr) != IFLA_VF_INFO) { |
1535 | err = -EINVAL; | |
c02db8c6 | 1536 | goto errout; |
253683bb | 1537 | } |
c02db8c6 CW |
1538 | err = do_setvfinfo(dev, attr); |
1539 | if (err < 0) | |
1540 | goto errout; | |
1541 | modified = 1; | |
1542 | } | |
ebc08a6f | 1543 | } |
1da177e4 LT |
1544 | err = 0; |
1545 | ||
57b61080 SF |
1546 | if (tb[IFLA_VF_PORTS]) { |
1547 | struct nlattr *port[IFLA_PORT_MAX+1]; | |
1548 | struct nlattr *attr; | |
1549 | int vf; | |
1550 | int rem; | |
1551 | ||
1552 | err = -EOPNOTSUPP; | |
1553 | if (!ops->ndo_set_vf_port) | |
1554 | goto errout; | |
1555 | ||
1556 | nla_for_each_nested(attr, tb[IFLA_VF_PORTS], rem) { | |
1557 | if (nla_type(attr) != IFLA_VF_PORT) | |
1558 | continue; | |
1559 | err = nla_parse_nested(port, IFLA_PORT_MAX, | |
1560 | attr, ifla_port_policy); | |
1561 | if (err < 0) | |
1562 | goto errout; | |
1563 | if (!port[IFLA_PORT_VF]) { | |
1564 | err = -EOPNOTSUPP; | |
1565 | goto errout; | |
1566 | } | |
1567 | vf = nla_get_u32(port[IFLA_PORT_VF]); | |
1568 | err = ops->ndo_set_vf_port(dev, vf, port); | |
1569 | if (err < 0) | |
1570 | goto errout; | |
1571 | modified = 1; | |
1572 | } | |
1573 | } | |
1574 | err = 0; | |
1575 | ||
1576 | if (tb[IFLA_PORT_SELF]) { | |
1577 | struct nlattr *port[IFLA_PORT_MAX+1]; | |
1578 | ||
1579 | err = nla_parse_nested(port, IFLA_PORT_MAX, | |
1580 | tb[IFLA_PORT_SELF], ifla_port_policy); | |
1581 | if (err < 0) | |
1582 | goto errout; | |
1583 | ||
1584 | err = -EOPNOTSUPP; | |
1585 | if (ops->ndo_set_vf_port) | |
1586 | err = ops->ndo_set_vf_port(dev, PORT_SELF_VF, port); | |
1587 | if (err < 0) | |
1588 | goto errout; | |
1589 | modified = 1; | |
1590 | } | |
f8ff182c TG |
1591 | |
1592 | if (tb[IFLA_AF_SPEC]) { | |
1593 | struct nlattr *af; | |
1594 | int rem; | |
1595 | ||
1596 | nla_for_each_nested(af, tb[IFLA_AF_SPEC], rem) { | |
1597 | const struct rtnl_af_ops *af_ops; | |
1598 | ||
1599 | if (!(af_ops = rtnl_af_lookup(nla_type(af)))) | |
cf7afbfe | 1600 | BUG(); |
f8ff182c | 1601 | |
cf7afbfe | 1602 | err = af_ops->set_link_af(dev, af); |
f8ff182c TG |
1603 | if (err < 0) |
1604 | goto errout; | |
1605 | ||
1606 | modified = 1; | |
1607 | } | |
1608 | } | |
57b61080 SF |
1609 | err = 0; |
1610 | ||
0157f60c | 1611 | errout: |
e87cc472 JP |
1612 | if (err < 0 && modified) |
1613 | 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", | |
1614 | dev->name); | |
da5e0494 | 1615 | |
0157f60c PM |
1616 | return err; |
1617 | } | |
1da177e4 | 1618 | |
661d2967 | 1619 | static int rtnl_setlink(struct sk_buff *skb, struct nlmsghdr *nlh) |
0157f60c | 1620 | { |
3b1e0a65 | 1621 | struct net *net = sock_net(skb->sk); |
0157f60c PM |
1622 | struct ifinfomsg *ifm; |
1623 | struct net_device *dev; | |
1624 | int err; | |
1625 | struct nlattr *tb[IFLA_MAX+1]; | |
1626 | char ifname[IFNAMSIZ]; | |
1627 | ||
1628 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); | |
1629 | if (err < 0) | |
1630 | goto errout; | |
1631 | ||
1632 | if (tb[IFLA_IFNAME]) | |
1633 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
1634 | else | |
1635 | ifname[0] = '\0'; | |
1636 | ||
1637 | err = -EINVAL; | |
1638 | ifm = nlmsg_data(nlh); | |
1639 | if (ifm->ifi_index > 0) | |
a3d12891 | 1640 | dev = __dev_get_by_index(net, ifm->ifi_index); |
0157f60c | 1641 | else if (tb[IFLA_IFNAME]) |
a3d12891 | 1642 | dev = __dev_get_by_name(net, ifname); |
0157f60c PM |
1643 | else |
1644 | goto errout; | |
1645 | ||
1646 | if (dev == NULL) { | |
1647 | err = -ENODEV; | |
1648 | goto errout; | |
1649 | } | |
1650 | ||
e0d087af ED |
1651 | err = validate_linkmsg(dev, tb); |
1652 | if (err < 0) | |
a3d12891 | 1653 | goto errout; |
0157f60c | 1654 | |
38f7b870 | 1655 | err = do_setlink(dev, ifm, tb, ifname, 0); |
da5e0494 | 1656 | errout: |
1da177e4 LT |
1657 | return err; |
1658 | } | |
1659 | ||
661d2967 | 1660 | static int rtnl_dellink(struct sk_buff *skb, struct nlmsghdr *nlh) |
38f7b870 | 1661 | { |
3b1e0a65 | 1662 | struct net *net = sock_net(skb->sk); |
38f7b870 PM |
1663 | const struct rtnl_link_ops *ops; |
1664 | struct net_device *dev; | |
1665 | struct ifinfomsg *ifm; | |
1666 | char ifname[IFNAMSIZ]; | |
1667 | struct nlattr *tb[IFLA_MAX+1]; | |
1668 | int err; | |
226bd341 | 1669 | LIST_HEAD(list_kill); |
38f7b870 PM |
1670 | |
1671 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); | |
1672 | if (err < 0) | |
1673 | return err; | |
1674 | ||
1675 | if (tb[IFLA_IFNAME]) | |
1676 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
1677 | ||
1678 | ifm = nlmsg_data(nlh); | |
1679 | if (ifm->ifi_index > 0) | |
881d966b | 1680 | dev = __dev_get_by_index(net, ifm->ifi_index); |
38f7b870 | 1681 | else if (tb[IFLA_IFNAME]) |
881d966b | 1682 | dev = __dev_get_by_name(net, ifname); |
38f7b870 PM |
1683 | else |
1684 | return -EINVAL; | |
1685 | ||
1686 | if (!dev) | |
1687 | return -ENODEV; | |
1688 | ||
1689 | ops = dev->rtnl_link_ops; | |
1690 | if (!ops) | |
1691 | return -EOPNOTSUPP; | |
1692 | ||
226bd341 ED |
1693 | ops->dellink(dev, &list_kill); |
1694 | unregister_netdevice_many(&list_kill); | |
1695 | list_del(&list_kill); | |
38f7b870 PM |
1696 | return 0; |
1697 | } | |
1698 | ||
3729d502 PM |
1699 | int rtnl_configure_link(struct net_device *dev, const struct ifinfomsg *ifm) |
1700 | { | |
1701 | unsigned int old_flags; | |
1702 | int err; | |
1703 | ||
1704 | old_flags = dev->flags; | |
1705 | if (ifm && (ifm->ifi_flags || ifm->ifi_change)) { | |
1706 | err = __dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm)); | |
1707 | if (err < 0) | |
1708 | return err; | |
1709 | } | |
1710 | ||
1711 | dev->rtnl_link_state = RTNL_LINK_INITIALIZED; | |
3729d502 | 1712 | |
a528c219 | 1713 | __dev_notify_flags(dev, old_flags, ~0U); |
3729d502 PM |
1714 | return 0; |
1715 | } | |
1716 | EXPORT_SYMBOL(rtnl_configure_link); | |
1717 | ||
c0713563 | 1718 | struct net_device *rtnl_create_link(struct net *net, |
81adee47 | 1719 | char *ifname, const struct rtnl_link_ops *ops, struct nlattr *tb[]) |
e7199288 PE |
1720 | { |
1721 | int err; | |
1722 | struct net_device *dev; | |
d40156aa JP |
1723 | unsigned int num_tx_queues = 1; |
1724 | unsigned int num_rx_queues = 1; | |
e7199288 | 1725 | |
76ff5cc9 JP |
1726 | if (tb[IFLA_NUM_TX_QUEUES]) |
1727 | num_tx_queues = nla_get_u32(tb[IFLA_NUM_TX_QUEUES]); | |
1728 | else if (ops->get_num_tx_queues) | |
d40156aa | 1729 | num_tx_queues = ops->get_num_tx_queues(); |
76ff5cc9 JP |
1730 | |
1731 | if (tb[IFLA_NUM_RX_QUEUES]) | |
1732 | num_rx_queues = nla_get_u32(tb[IFLA_NUM_RX_QUEUES]); | |
1733 | else if (ops->get_num_rx_queues) | |
d40156aa | 1734 | num_rx_queues = ops->get_num_rx_queues(); |
efacb309 | 1735 | |
e7199288 | 1736 | err = -ENOMEM; |
d40156aa JP |
1737 | dev = alloc_netdev_mqs(ops->priv_size, ifname, ops->setup, |
1738 | num_tx_queues, num_rx_queues); | |
e7199288 PE |
1739 | if (!dev) |
1740 | goto err; | |
1741 | ||
81adee47 EB |
1742 | dev_net_set(dev, net); |
1743 | dev->rtnl_link_ops = ops; | |
3729d502 | 1744 | dev->rtnl_link_state = RTNL_LINK_INITIALIZING; |
81adee47 | 1745 | |
e7199288 PE |
1746 | if (tb[IFLA_MTU]) |
1747 | dev->mtu = nla_get_u32(tb[IFLA_MTU]); | |
2afb9b53 | 1748 | if (tb[IFLA_ADDRESS]) { |
e7199288 PE |
1749 | memcpy(dev->dev_addr, nla_data(tb[IFLA_ADDRESS]), |
1750 | nla_len(tb[IFLA_ADDRESS])); | |
2afb9b53 JP |
1751 | dev->addr_assign_type = NET_ADDR_SET; |
1752 | } | |
e7199288 PE |
1753 | if (tb[IFLA_BROADCAST]) |
1754 | memcpy(dev->broadcast, nla_data(tb[IFLA_BROADCAST]), | |
1755 | nla_len(tb[IFLA_BROADCAST])); | |
1756 | if (tb[IFLA_TXQLEN]) | |
1757 | dev->tx_queue_len = nla_get_u32(tb[IFLA_TXQLEN]); | |
1758 | if (tb[IFLA_OPERSTATE]) | |
93b2d4a2 | 1759 | set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE])); |
e7199288 PE |
1760 | if (tb[IFLA_LINKMODE]) |
1761 | dev->link_mode = nla_get_u8(tb[IFLA_LINKMODE]); | |
ffa934f1 PM |
1762 | if (tb[IFLA_GROUP]) |
1763 | dev_set_group(dev, nla_get_u32(tb[IFLA_GROUP])); | |
e7199288 PE |
1764 | |
1765 | return dev; | |
1766 | ||
e7199288 PE |
1767 | err: |
1768 | return ERR_PTR(err); | |
1769 | } | |
e0d087af | 1770 | EXPORT_SYMBOL(rtnl_create_link); |
e7199288 | 1771 | |
e7ed828f VD |
1772 | static int rtnl_group_changelink(struct net *net, int group, |
1773 | struct ifinfomsg *ifm, | |
1774 | struct nlattr **tb) | |
1775 | { | |
1776 | struct net_device *dev; | |
1777 | int err; | |
1778 | ||
1779 | for_each_netdev(net, dev) { | |
1780 | if (dev->group == group) { | |
1781 | err = do_setlink(dev, ifm, tb, NULL, 0); | |
1782 | if (err < 0) | |
1783 | return err; | |
1784 | } | |
1785 | } | |
1786 | ||
1787 | return 0; | |
1788 | } | |
1789 | ||
661d2967 | 1790 | static int rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh) |
38f7b870 | 1791 | { |
3b1e0a65 | 1792 | struct net *net = sock_net(skb->sk); |
38f7b870 | 1793 | const struct rtnl_link_ops *ops; |
ba7d49b1 | 1794 | const struct rtnl_link_ops *m_ops = NULL; |
38f7b870 | 1795 | struct net_device *dev; |
ba7d49b1 | 1796 | struct net_device *master_dev = NULL; |
38f7b870 PM |
1797 | struct ifinfomsg *ifm; |
1798 | char kind[MODULE_NAME_LEN]; | |
1799 | char ifname[IFNAMSIZ]; | |
1800 | struct nlattr *tb[IFLA_MAX+1]; | |
1801 | struct nlattr *linkinfo[IFLA_INFO_MAX+1]; | |
1802 | int err; | |
1803 | ||
95a5afca | 1804 | #ifdef CONFIG_MODULES |
38f7b870 | 1805 | replay: |
8072f085 | 1806 | #endif |
38f7b870 PM |
1807 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); |
1808 | if (err < 0) | |
1809 | return err; | |
1810 | ||
1811 | if (tb[IFLA_IFNAME]) | |
1812 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
1813 | else | |
1814 | ifname[0] = '\0'; | |
1815 | ||
1816 | ifm = nlmsg_data(nlh); | |
1817 | if (ifm->ifi_index > 0) | |
881d966b | 1818 | dev = __dev_get_by_index(net, ifm->ifi_index); |
e7ed828f VD |
1819 | else { |
1820 | if (ifname[0]) | |
1821 | dev = __dev_get_by_name(net, ifname); | |
e7ed828f VD |
1822 | else |
1823 | dev = NULL; | |
1824 | } | |
38f7b870 | 1825 | |
ba7d49b1 JP |
1826 | if (dev) { |
1827 | master_dev = netdev_master_upper_dev_get(dev); | |
1828 | if (master_dev) | |
1829 | m_ops = master_dev->rtnl_link_ops; | |
1830 | } | |
1831 | ||
e0d087af ED |
1832 | err = validate_linkmsg(dev, tb); |
1833 | if (err < 0) | |
1840bb13 TG |
1834 | return err; |
1835 | ||
38f7b870 PM |
1836 | if (tb[IFLA_LINKINFO]) { |
1837 | err = nla_parse_nested(linkinfo, IFLA_INFO_MAX, | |
1838 | tb[IFLA_LINKINFO], ifla_info_policy); | |
1839 | if (err < 0) | |
1840 | return err; | |
1841 | } else | |
1842 | memset(linkinfo, 0, sizeof(linkinfo)); | |
1843 | ||
1844 | if (linkinfo[IFLA_INFO_KIND]) { | |
1845 | nla_strlcpy(kind, linkinfo[IFLA_INFO_KIND], sizeof(kind)); | |
1846 | ops = rtnl_link_ops_get(kind); | |
1847 | } else { | |
1848 | kind[0] = '\0'; | |
1849 | ops = NULL; | |
1850 | } | |
1851 | ||
1852 | if (1) { | |
ba7d49b1 JP |
1853 | struct nlattr *attr[ops ? ops->maxtype + 1 : 0]; |
1854 | struct nlattr *slave_attr[m_ops ? m_ops->slave_maxtype + 1 : 0]; | |
1855 | struct nlattr **data = NULL; | |
1856 | struct nlattr **slave_data = NULL; | |
81adee47 | 1857 | struct net *dest_net; |
38f7b870 PM |
1858 | |
1859 | if (ops) { | |
1860 | if (ops->maxtype && linkinfo[IFLA_INFO_DATA]) { | |
1861 | err = nla_parse_nested(attr, ops->maxtype, | |
1862 | linkinfo[IFLA_INFO_DATA], | |
1863 | ops->policy); | |
1864 | if (err < 0) | |
1865 | return err; | |
1866 | data = attr; | |
1867 | } | |
1868 | if (ops->validate) { | |
1869 | err = ops->validate(tb, data); | |
1870 | if (err < 0) | |
1871 | return err; | |
1872 | } | |
1873 | } | |
1874 | ||
ba7d49b1 JP |
1875 | if (m_ops) { |
1876 | if (m_ops->slave_maxtype && | |
1877 | linkinfo[IFLA_INFO_SLAVE_DATA]) { | |
1878 | err = nla_parse_nested(slave_attr, | |
1879 | m_ops->slave_maxtype, | |
1880 | linkinfo[IFLA_INFO_SLAVE_DATA], | |
1881 | m_ops->slave_policy); | |
1882 | if (err < 0) | |
1883 | return err; | |
1884 | slave_data = slave_attr; | |
1885 | } | |
1886 | if (m_ops->slave_validate) { | |
1887 | err = m_ops->slave_validate(tb, slave_data); | |
1888 | if (err < 0) | |
1889 | return err; | |
1890 | } | |
1891 | } | |
1892 | ||
38f7b870 PM |
1893 | if (dev) { |
1894 | int modified = 0; | |
1895 | ||
1896 | if (nlh->nlmsg_flags & NLM_F_EXCL) | |
1897 | return -EEXIST; | |
1898 | if (nlh->nlmsg_flags & NLM_F_REPLACE) | |
1899 | return -EOPNOTSUPP; | |
1900 | ||
1901 | if (linkinfo[IFLA_INFO_DATA]) { | |
1902 | if (!ops || ops != dev->rtnl_link_ops || | |
1903 | !ops->changelink) | |
1904 | return -EOPNOTSUPP; | |
1905 | ||
1906 | err = ops->changelink(dev, tb, data); | |
1907 | if (err < 0) | |
1908 | return err; | |
1909 | modified = 1; | |
1910 | } | |
1911 | ||
ba7d49b1 JP |
1912 | if (linkinfo[IFLA_INFO_SLAVE_DATA]) { |
1913 | if (!m_ops || !m_ops->slave_changelink) | |
1914 | return -EOPNOTSUPP; | |
1915 | ||
1916 | err = m_ops->slave_changelink(master_dev, dev, | |
1917 | tb, slave_data); | |
1918 | if (err < 0) | |
1919 | return err; | |
1920 | modified = 1; | |
1921 | } | |
1922 | ||
38f7b870 PM |
1923 | return do_setlink(dev, ifm, tb, ifname, modified); |
1924 | } | |
1925 | ||
ffa934f1 PM |
1926 | if (!(nlh->nlmsg_flags & NLM_F_CREATE)) { |
1927 | if (ifm->ifi_index == 0 && tb[IFLA_GROUP]) | |
1928 | return rtnl_group_changelink(net, | |
1929 | nla_get_u32(tb[IFLA_GROUP]), | |
1930 | ifm, tb); | |
38f7b870 | 1931 | return -ENODEV; |
ffa934f1 | 1932 | } |
38f7b870 | 1933 | |
0e06877c | 1934 | if (tb[IFLA_MAP] || tb[IFLA_MASTER] || tb[IFLA_PROTINFO]) |
38f7b870 PM |
1935 | return -EOPNOTSUPP; |
1936 | ||
1937 | if (!ops) { | |
95a5afca | 1938 | #ifdef CONFIG_MODULES |
38f7b870 PM |
1939 | if (kind[0]) { |
1940 | __rtnl_unlock(); | |
1941 | request_module("rtnl-link-%s", kind); | |
1942 | rtnl_lock(); | |
1943 | ops = rtnl_link_ops_get(kind); | |
1944 | if (ops) | |
1945 | goto replay; | |
1946 | } | |
1947 | #endif | |
1948 | return -EOPNOTSUPP; | |
1949 | } | |
1950 | ||
1951 | if (!ifname[0]) | |
1952 | snprintf(ifname, IFNAMSIZ, "%s%%d", ops->kind); | |
e7199288 | 1953 | |
81adee47 | 1954 | dest_net = rtnl_link_get_net(net, tb); |
13ad1774 EB |
1955 | if (IS_ERR(dest_net)) |
1956 | return PTR_ERR(dest_net); | |
1957 | ||
c0713563 | 1958 | dev = rtnl_create_link(dest_net, ifname, ops, tb); |
9c7dafbf | 1959 | if (IS_ERR(dev)) { |
e7199288 | 1960 | err = PTR_ERR(dev); |
9c7dafbf PE |
1961 | goto out; |
1962 | } | |
1963 | ||
1964 | dev->ifindex = ifm->ifi_index; | |
1965 | ||
0e0eee24 | 1966 | if (ops->newlink) { |
81adee47 | 1967 | err = ops->newlink(net, dev, tb, data); |
0e0eee24 CW |
1968 | /* Drivers should call free_netdev() in ->destructor |
1969 | * and unregister it on failure so that device could be | |
1970 | * finally freed in rtnl_unlock. | |
1971 | */ | |
1972 | if (err < 0) | |
1973 | goto out; | |
1974 | } else { | |
2d85cba2 | 1975 | err = register_netdevice(dev); |
0e0eee24 CW |
1976 | if (err < 0) { |
1977 | free_netdev(dev); | |
1978 | goto out; | |
1979 | } | |
fce9b9be | 1980 | } |
3729d502 PM |
1981 | err = rtnl_configure_link(dev, ifm); |
1982 | if (err < 0) | |
1983 | unregister_netdevice(dev); | |
1984 | out: | |
81adee47 | 1985 | put_net(dest_net); |
38f7b870 PM |
1986 | return err; |
1987 | } | |
1988 | } | |
1989 | ||
661d2967 | 1990 | static int rtnl_getlink(struct sk_buff *skb, struct nlmsghdr* nlh) |
711e2c33 | 1991 | { |
3b1e0a65 | 1992 | struct net *net = sock_net(skb->sk); |
b60c5115 | 1993 | struct ifinfomsg *ifm; |
a3d12891 | 1994 | char ifname[IFNAMSIZ]; |
b60c5115 TG |
1995 | struct nlattr *tb[IFLA_MAX+1]; |
1996 | struct net_device *dev = NULL; | |
1997 | struct sk_buff *nskb; | |
339bf98f | 1998 | int err; |
115c9b81 | 1999 | u32 ext_filter_mask = 0; |
711e2c33 | 2000 | |
b60c5115 TG |
2001 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); |
2002 | if (err < 0) | |
9918f230 | 2003 | return err; |
b60c5115 | 2004 | |
a3d12891 ED |
2005 | if (tb[IFLA_IFNAME]) |
2006 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
2007 | ||
115c9b81 GR |
2008 | if (tb[IFLA_EXT_MASK]) |
2009 | ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]); | |
2010 | ||
b60c5115 | 2011 | ifm = nlmsg_data(nlh); |
a3d12891 ED |
2012 | if (ifm->ifi_index > 0) |
2013 | dev = __dev_get_by_index(net, ifm->ifi_index); | |
2014 | else if (tb[IFLA_IFNAME]) | |
2015 | dev = __dev_get_by_name(net, ifname); | |
2016 | else | |
711e2c33 | 2017 | return -EINVAL; |
711e2c33 | 2018 | |
a3d12891 ED |
2019 | if (dev == NULL) |
2020 | return -ENODEV; | |
2021 | ||
115c9b81 | 2022 | nskb = nlmsg_new(if_nlmsg_size(dev, ext_filter_mask), GFP_KERNEL); |
a3d12891 ED |
2023 | if (nskb == NULL) |
2024 | return -ENOBUFS; | |
b60c5115 | 2025 | |
15e47304 | 2026 | err = rtnl_fill_ifinfo(nskb, dev, RTM_NEWLINK, NETLINK_CB(skb).portid, |
115c9b81 | 2027 | nlh->nlmsg_seq, 0, 0, ext_filter_mask); |
26932566 PM |
2028 | if (err < 0) { |
2029 | /* -EMSGSIZE implies BUG in if_nlmsg_size */ | |
2030 | WARN_ON(err == -EMSGSIZE); | |
2031 | kfree_skb(nskb); | |
a3d12891 | 2032 | } else |
15e47304 | 2033 | err = rtnl_unicast(nskb, net, NETLINK_CB(skb).portid); |
711e2c33 | 2034 | |
b60c5115 | 2035 | return err; |
711e2c33 | 2036 | } |
711e2c33 | 2037 | |
115c9b81 | 2038 | static u16 rtnl_calcit(struct sk_buff *skb, struct nlmsghdr *nlh) |
c7ac8679 | 2039 | { |
115c9b81 GR |
2040 | struct net *net = sock_net(skb->sk); |
2041 | struct net_device *dev; | |
2042 | struct nlattr *tb[IFLA_MAX+1]; | |
2043 | u32 ext_filter_mask = 0; | |
2044 | u16 min_ifinfo_dump_size = 0; | |
2045 | ||
88c5b5ce | 2046 | if (nlmsg_parse(nlh, sizeof(struct ifinfomsg), tb, IFLA_MAX, |
a4b64fbe ED |
2047 | ifla_policy) >= 0) { |
2048 | if (tb[IFLA_EXT_MASK]) | |
2049 | ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]); | |
2050 | } | |
115c9b81 GR |
2051 | |
2052 | if (!ext_filter_mask) | |
2053 | return NLMSG_GOODSIZE; | |
2054 | /* | |
2055 | * traverse the list of net devices and compute the minimum | |
2056 | * buffer size based upon the filter mask. | |
2057 | */ | |
2058 | list_for_each_entry(dev, &net->dev_base_head, dev_list) { | |
2059 | min_ifinfo_dump_size = max_t(u16, min_ifinfo_dump_size, | |
2060 | if_nlmsg_size(dev, | |
2061 | ext_filter_mask)); | |
2062 | } | |
2063 | ||
c7ac8679 GR |
2064 | return min_ifinfo_dump_size; |
2065 | } | |
2066 | ||
42bad1da | 2067 | static int rtnl_dump_all(struct sk_buff *skb, struct netlink_callback *cb) |
1da177e4 LT |
2068 | { |
2069 | int idx; | |
2070 | int s_idx = cb->family; | |
2071 | ||
2072 | if (s_idx == 0) | |
2073 | s_idx = 1; | |
25239cee | 2074 | for (idx = 1; idx <= RTNL_FAMILY_MAX; idx++) { |
1da177e4 LT |
2075 | int type = cb->nlh->nlmsg_type-RTM_BASE; |
2076 | if (idx < s_idx || idx == PF_PACKET) | |
2077 | continue; | |
e2849863 TG |
2078 | if (rtnl_msg_handlers[idx] == NULL || |
2079 | rtnl_msg_handlers[idx][type].dumpit == NULL) | |
1da177e4 | 2080 | continue; |
0465277f | 2081 | if (idx > s_idx) { |
1da177e4 | 2082 | memset(&cb->args[0], 0, sizeof(cb->args)); |
0465277f ND |
2083 | cb->prev_seq = 0; |
2084 | cb->seq = 0; | |
2085 | } | |
e2849863 | 2086 | if (rtnl_msg_handlers[idx][type].dumpit(skb, cb)) |
1da177e4 LT |
2087 | break; |
2088 | } | |
2089 | cb->family = idx; | |
2090 | ||
2091 | return skb->len; | |
2092 | } | |
2093 | ||
7f294054 AS |
2094 | void rtmsg_ifinfo(int type, struct net_device *dev, unsigned int change, |
2095 | gfp_t flags) | |
1da177e4 | 2096 | { |
c346dca1 | 2097 | struct net *net = dev_net(dev); |
1da177e4 | 2098 | struct sk_buff *skb; |
0ec6d3f4 | 2099 | int err = -ENOBUFS; |
c7ac8679 | 2100 | size_t if_info_size; |
1da177e4 | 2101 | |
7f294054 | 2102 | skb = nlmsg_new((if_info_size = if_nlmsg_size(dev, 0)), flags); |
0ec6d3f4 TG |
2103 | if (skb == NULL) |
2104 | goto errout; | |
1da177e4 | 2105 | |
115c9b81 | 2106 | err = rtnl_fill_ifinfo(skb, dev, type, 0, 0, change, 0, 0); |
26932566 PM |
2107 | if (err < 0) { |
2108 | /* -EMSGSIZE implies BUG in if_nlmsg_size() */ | |
2109 | WARN_ON(err == -EMSGSIZE); | |
2110 | kfree_skb(skb); | |
2111 | goto errout; | |
2112 | } | |
7f294054 | 2113 | rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, flags); |
1ce85fe4 | 2114 | return; |
0ec6d3f4 TG |
2115 | errout: |
2116 | if (err < 0) | |
4b3da706 | 2117 | rtnl_set_sk_err(net, RTNLGRP_LINK, err); |
1da177e4 | 2118 | } |
471cb5a3 | 2119 | EXPORT_SYMBOL(rtmsg_ifinfo); |
1da177e4 | 2120 | |
d83b0603 JF |
2121 | static int nlmsg_populate_fdb_fill(struct sk_buff *skb, |
2122 | struct net_device *dev, | |
2123 | u8 *addr, u32 pid, u32 seq, | |
1c104a6b ND |
2124 | int type, unsigned int flags, |
2125 | int nlflags) | |
d83b0603 JF |
2126 | { |
2127 | struct nlmsghdr *nlh; | |
2128 | struct ndmsg *ndm; | |
2129 | ||
1c104a6b | 2130 | nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ndm), nlflags); |
d83b0603 JF |
2131 | if (!nlh) |
2132 | return -EMSGSIZE; | |
2133 | ||
2134 | ndm = nlmsg_data(nlh); | |
2135 | ndm->ndm_family = AF_BRIDGE; | |
2136 | ndm->ndm_pad1 = 0; | |
2137 | ndm->ndm_pad2 = 0; | |
2138 | ndm->ndm_flags = flags; | |
2139 | ndm->ndm_type = 0; | |
2140 | ndm->ndm_ifindex = dev->ifindex; | |
2141 | ndm->ndm_state = NUD_PERMANENT; | |
2142 | ||
2143 | if (nla_put(skb, NDA_LLADDR, ETH_ALEN, addr)) | |
2144 | goto nla_put_failure; | |
2145 | ||
2146 | return nlmsg_end(skb, nlh); | |
2147 | ||
2148 | nla_put_failure: | |
2149 | nlmsg_cancel(skb, nlh); | |
2150 | return -EMSGSIZE; | |
2151 | } | |
2152 | ||
3ff661c3 JF |
2153 | static inline size_t rtnl_fdb_nlmsg_size(void) |
2154 | { | |
2155 | return NLMSG_ALIGN(sizeof(struct ndmsg)) + nla_total_size(ETH_ALEN); | |
2156 | } | |
2157 | ||
2158 | static void rtnl_fdb_notify(struct net_device *dev, u8 *addr, int type) | |
2159 | { | |
2160 | struct net *net = dev_net(dev); | |
2161 | struct sk_buff *skb; | |
2162 | int err = -ENOBUFS; | |
2163 | ||
2164 | skb = nlmsg_new(rtnl_fdb_nlmsg_size(), GFP_ATOMIC); | |
2165 | if (!skb) | |
2166 | goto errout; | |
2167 | ||
1c104a6b | 2168 | err = nlmsg_populate_fdb_fill(skb, dev, addr, 0, 0, type, NTF_SELF, 0); |
3ff661c3 JF |
2169 | if (err < 0) { |
2170 | kfree_skb(skb); | |
2171 | goto errout; | |
2172 | } | |
2173 | ||
2174 | rtnl_notify(skb, net, 0, RTNLGRP_NEIGH, NULL, GFP_ATOMIC); | |
2175 | return; | |
2176 | errout: | |
2177 | rtnl_set_sk_err(net, RTNLGRP_NEIGH, err); | |
2178 | } | |
2179 | ||
090096bf VY |
2180 | /** |
2181 | * ndo_dflt_fdb_add - default netdevice operation to add an FDB entry | |
2182 | */ | |
2183 | int ndo_dflt_fdb_add(struct ndmsg *ndm, | |
2184 | struct nlattr *tb[], | |
2185 | struct net_device *dev, | |
2186 | const unsigned char *addr, | |
2187 | u16 flags) | |
2188 | { | |
2189 | int err = -EINVAL; | |
2190 | ||
2191 | /* If aging addresses are supported device will need to | |
2192 | * implement its own handler for this. | |
2193 | */ | |
2194 | if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) { | |
2195 | pr_info("%s: FDB only supports static addresses\n", dev->name); | |
2196 | return err; | |
2197 | } | |
2198 | ||
2199 | if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr)) | |
2200 | err = dev_uc_add_excl(dev, addr); | |
2201 | else if (is_multicast_ether_addr(addr)) | |
2202 | err = dev_mc_add_excl(dev, addr); | |
2203 | ||
2204 | /* Only return duplicate errors if NLM_F_EXCL is set */ | |
2205 | if (err == -EEXIST && !(flags & NLM_F_EXCL)) | |
2206 | err = 0; | |
2207 | ||
2208 | return err; | |
2209 | } | |
2210 | EXPORT_SYMBOL(ndo_dflt_fdb_add); | |
2211 | ||
661d2967 | 2212 | static int rtnl_fdb_add(struct sk_buff *skb, struct nlmsghdr *nlh) |
77162022 JF |
2213 | { |
2214 | struct net *net = sock_net(skb->sk); | |
77162022 JF |
2215 | struct ndmsg *ndm; |
2216 | struct nlattr *tb[NDA_MAX+1]; | |
2217 | struct net_device *dev; | |
2218 | u8 *addr; | |
2219 | int err; | |
2220 | ||
2221 | err = nlmsg_parse(nlh, sizeof(*ndm), tb, NDA_MAX, NULL); | |
2222 | if (err < 0) | |
2223 | return err; | |
2224 | ||
2225 | ndm = nlmsg_data(nlh); | |
2226 | if (ndm->ndm_ifindex == 0) { | |
2227 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid ifindex\n"); | |
2228 | return -EINVAL; | |
2229 | } | |
2230 | ||
2231 | dev = __dev_get_by_index(net, ndm->ndm_ifindex); | |
2232 | if (dev == NULL) { | |
2233 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with unknown ifindex\n"); | |
2234 | return -ENODEV; | |
2235 | } | |
2236 | ||
2237 | if (!tb[NDA_LLADDR] || nla_len(tb[NDA_LLADDR]) != ETH_ALEN) { | |
2238 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid address\n"); | |
2239 | return -EINVAL; | |
2240 | } | |
2241 | ||
2242 | addr = nla_data(tb[NDA_LLADDR]); | |
77162022 JF |
2243 | |
2244 | err = -EOPNOTSUPP; | |
2245 | ||
2246 | /* Support fdb on master device the net/bridge default case */ | |
2247 | if ((!ndm->ndm_flags || ndm->ndm_flags & NTF_MASTER) && | |
2248 | (dev->priv_flags & IFF_BRIDGE_PORT)) { | |
898e5061 JP |
2249 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
2250 | const struct net_device_ops *ops = br_dev->netdev_ops; | |
2251 | ||
2252 | err = ops->ndo_fdb_add(ndm, tb, dev, addr, nlh->nlmsg_flags); | |
77162022 JF |
2253 | if (err) |
2254 | goto out; | |
2255 | else | |
2256 | ndm->ndm_flags &= ~NTF_MASTER; | |
2257 | } | |
2258 | ||
2259 | /* Embedded bridge, macvlan, and any other device support */ | |
090096bf VY |
2260 | if ((ndm->ndm_flags & NTF_SELF)) { |
2261 | if (dev->netdev_ops->ndo_fdb_add) | |
2262 | err = dev->netdev_ops->ndo_fdb_add(ndm, tb, dev, addr, | |
2263 | nlh->nlmsg_flags); | |
2264 | else | |
2265 | err = ndo_dflt_fdb_add(ndm, tb, dev, addr, | |
2266 | nlh->nlmsg_flags); | |
77162022 | 2267 | |
3ff661c3 JF |
2268 | if (!err) { |
2269 | rtnl_fdb_notify(dev, addr, RTM_NEWNEIGH); | |
77162022 | 2270 | ndm->ndm_flags &= ~NTF_SELF; |
3ff661c3 | 2271 | } |
77162022 JF |
2272 | } |
2273 | out: | |
2274 | return err; | |
2275 | } | |
2276 | ||
090096bf VY |
2277 | /** |
2278 | * ndo_dflt_fdb_del - default netdevice operation to delete an FDB entry | |
2279 | */ | |
2280 | int ndo_dflt_fdb_del(struct ndmsg *ndm, | |
2281 | struct nlattr *tb[], | |
2282 | struct net_device *dev, | |
2283 | const unsigned char *addr) | |
2284 | { | |
2285 | int err = -EOPNOTSUPP; | |
2286 | ||
2287 | /* If aging addresses are supported device will need to | |
2288 | * implement its own handler for this. | |
2289 | */ | |
64535993 | 2290 | if (!(ndm->ndm_state & NUD_PERMANENT)) { |
090096bf VY |
2291 | pr_info("%s: FDB only supports static addresses\n", dev->name); |
2292 | return -EINVAL; | |
2293 | } | |
2294 | ||
2295 | if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr)) | |
2296 | err = dev_uc_del(dev, addr); | |
2297 | else if (is_multicast_ether_addr(addr)) | |
2298 | err = dev_mc_del(dev, addr); | |
2299 | else | |
2300 | err = -EINVAL; | |
2301 | ||
2302 | return err; | |
2303 | } | |
2304 | EXPORT_SYMBOL(ndo_dflt_fdb_del); | |
2305 | ||
661d2967 | 2306 | static int rtnl_fdb_del(struct sk_buff *skb, struct nlmsghdr *nlh) |
77162022 JF |
2307 | { |
2308 | struct net *net = sock_net(skb->sk); | |
2309 | struct ndmsg *ndm; | |
1690be63 | 2310 | struct nlattr *tb[NDA_MAX+1]; |
77162022 JF |
2311 | struct net_device *dev; |
2312 | int err = -EINVAL; | |
2313 | __u8 *addr; | |
2314 | ||
1690be63 VY |
2315 | if (!capable(CAP_NET_ADMIN)) |
2316 | return -EPERM; | |
2317 | ||
2318 | err = nlmsg_parse(nlh, sizeof(*ndm), tb, NDA_MAX, NULL); | |
2319 | if (err < 0) | |
2320 | return err; | |
77162022 JF |
2321 | |
2322 | ndm = nlmsg_data(nlh); | |
2323 | if (ndm->ndm_ifindex == 0) { | |
2324 | pr_info("PF_BRIDGE: RTM_DELNEIGH with invalid ifindex\n"); | |
2325 | return -EINVAL; | |
2326 | } | |
2327 | ||
2328 | dev = __dev_get_by_index(net, ndm->ndm_ifindex); | |
2329 | if (dev == NULL) { | |
2330 | pr_info("PF_BRIDGE: RTM_DELNEIGH with unknown ifindex\n"); | |
2331 | return -ENODEV; | |
2332 | } | |
2333 | ||
1690be63 VY |
2334 | if (!tb[NDA_LLADDR] || nla_len(tb[NDA_LLADDR]) != ETH_ALEN) { |
2335 | pr_info("PF_BRIDGE: RTM_DELNEIGH with invalid address\n"); | |
2336 | return -EINVAL; | |
2337 | } | |
2338 | ||
2339 | addr = nla_data(tb[NDA_LLADDR]); | |
77162022 | 2340 | |
77162022 JF |
2341 | err = -EOPNOTSUPP; |
2342 | ||
2343 | /* Support fdb on master device the net/bridge default case */ | |
2344 | if ((!ndm->ndm_flags || ndm->ndm_flags & NTF_MASTER) && | |
2345 | (dev->priv_flags & IFF_BRIDGE_PORT)) { | |
898e5061 JP |
2346 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
2347 | const struct net_device_ops *ops = br_dev->netdev_ops; | |
77162022 | 2348 | |
898e5061 | 2349 | if (ops->ndo_fdb_del) |
1690be63 | 2350 | err = ops->ndo_fdb_del(ndm, tb, dev, addr); |
77162022 JF |
2351 | |
2352 | if (err) | |
2353 | goto out; | |
2354 | else | |
2355 | ndm->ndm_flags &= ~NTF_MASTER; | |
2356 | } | |
2357 | ||
2358 | /* Embedded bridge, macvlan, and any other device support */ | |
090096bf VY |
2359 | if (ndm->ndm_flags & NTF_SELF) { |
2360 | if (dev->netdev_ops->ndo_fdb_del) | |
2361 | err = dev->netdev_ops->ndo_fdb_del(ndm, tb, dev, addr); | |
2362 | else | |
2363 | err = ndo_dflt_fdb_del(ndm, tb, dev, addr); | |
77162022 | 2364 | |
3ff661c3 JF |
2365 | if (!err) { |
2366 | rtnl_fdb_notify(dev, addr, RTM_DELNEIGH); | |
77162022 | 2367 | ndm->ndm_flags &= ~NTF_SELF; |
3ff661c3 | 2368 | } |
77162022 JF |
2369 | } |
2370 | out: | |
2371 | return err; | |
2372 | } | |
2373 | ||
d83b0603 JF |
2374 | static int nlmsg_populate_fdb(struct sk_buff *skb, |
2375 | struct netlink_callback *cb, | |
2376 | struct net_device *dev, | |
2377 | int *idx, | |
2378 | struct netdev_hw_addr_list *list) | |
2379 | { | |
2380 | struct netdev_hw_addr *ha; | |
2381 | int err; | |
15e47304 | 2382 | u32 portid, seq; |
d83b0603 | 2383 | |
15e47304 | 2384 | portid = NETLINK_CB(cb->skb).portid; |
d83b0603 JF |
2385 | seq = cb->nlh->nlmsg_seq; |
2386 | ||
2387 | list_for_each_entry(ha, &list->list, list) { | |
2388 | if (*idx < cb->args[0]) | |
2389 | goto skip; | |
2390 | ||
2391 | err = nlmsg_populate_fdb_fill(skb, dev, ha->addr, | |
a7a558fe | 2392 | portid, seq, |
1c104a6b ND |
2393 | RTM_NEWNEIGH, NTF_SELF, |
2394 | NLM_F_MULTI); | |
d83b0603 JF |
2395 | if (err < 0) |
2396 | return err; | |
2397 | skip: | |
2398 | *idx += 1; | |
2399 | } | |
2400 | return 0; | |
2401 | } | |
2402 | ||
2403 | /** | |
2c53040f | 2404 | * ndo_dflt_fdb_dump - default netdevice operation to dump an FDB table. |
d83b0603 JF |
2405 | * @nlh: netlink message header |
2406 | * @dev: netdevice | |
2407 | * | |
2408 | * Default netdevice operation to dump the existing unicast address list. | |
91f3e7b1 | 2409 | * Returns number of addresses from list put in skb. |
d83b0603 JF |
2410 | */ |
2411 | int ndo_dflt_fdb_dump(struct sk_buff *skb, | |
2412 | struct netlink_callback *cb, | |
2413 | struct net_device *dev, | |
2414 | int idx) | |
2415 | { | |
2416 | int err; | |
2417 | ||
2418 | netif_addr_lock_bh(dev); | |
2419 | err = nlmsg_populate_fdb(skb, cb, dev, &idx, &dev->uc); | |
2420 | if (err) | |
2421 | goto out; | |
2422 | nlmsg_populate_fdb(skb, cb, dev, &idx, &dev->mc); | |
2423 | out: | |
2424 | netif_addr_unlock_bh(dev); | |
2425 | return idx; | |
2426 | } | |
2427 | EXPORT_SYMBOL(ndo_dflt_fdb_dump); | |
2428 | ||
77162022 JF |
2429 | static int rtnl_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb) |
2430 | { | |
2431 | int idx = 0; | |
2432 | struct net *net = sock_net(skb->sk); | |
2433 | struct net_device *dev; | |
2434 | ||
2435 | rcu_read_lock(); | |
2436 | for_each_netdev_rcu(net, dev) { | |
2437 | if (dev->priv_flags & IFF_BRIDGE_PORT) { | |
898e5061 JP |
2438 | struct net_device *br_dev; |
2439 | const struct net_device_ops *ops; | |
77162022 | 2440 | |
898e5061 JP |
2441 | br_dev = netdev_master_upper_dev_get(dev); |
2442 | ops = br_dev->netdev_ops; | |
77162022 JF |
2443 | if (ops->ndo_fdb_dump) |
2444 | idx = ops->ndo_fdb_dump(skb, cb, dev, idx); | |
2445 | } | |
2446 | ||
2447 | if (dev->netdev_ops->ndo_fdb_dump) | |
2448 | idx = dev->netdev_ops->ndo_fdb_dump(skb, cb, dev, idx); | |
090096bf | 2449 | else |
91f3e7b1 | 2450 | idx = ndo_dflt_fdb_dump(skb, cb, dev, idx); |
77162022 JF |
2451 | } |
2452 | rcu_read_unlock(); | |
2453 | ||
2454 | cb->args[0] = idx; | |
2455 | return skb->len; | |
2456 | } | |
2457 | ||
815cccbf JF |
2458 | int ndo_dflt_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq, |
2459 | struct net_device *dev, u16 mode) | |
2460 | { | |
2461 | struct nlmsghdr *nlh; | |
2462 | struct ifinfomsg *ifm; | |
2463 | struct nlattr *br_afspec; | |
2464 | u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN; | |
898e5061 | 2465 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
815cccbf JF |
2466 | |
2467 | nlh = nlmsg_put(skb, pid, seq, RTM_NEWLINK, sizeof(*ifm), NLM_F_MULTI); | |
2468 | if (nlh == NULL) | |
2469 | return -EMSGSIZE; | |
2470 | ||
2471 | ifm = nlmsg_data(nlh); | |
2472 | ifm->ifi_family = AF_BRIDGE; | |
2473 | ifm->__ifi_pad = 0; | |
2474 | ifm->ifi_type = dev->type; | |
2475 | ifm->ifi_index = dev->ifindex; | |
2476 | ifm->ifi_flags = dev_get_flags(dev); | |
2477 | ifm->ifi_change = 0; | |
2478 | ||
2479 | ||
2480 | if (nla_put_string(skb, IFLA_IFNAME, dev->name) || | |
2481 | nla_put_u32(skb, IFLA_MTU, dev->mtu) || | |
2482 | nla_put_u8(skb, IFLA_OPERSTATE, operstate) || | |
898e5061 JP |
2483 | (br_dev && |
2484 | nla_put_u32(skb, IFLA_MASTER, br_dev->ifindex)) || | |
815cccbf JF |
2485 | (dev->addr_len && |
2486 | nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) || | |
2487 | (dev->ifindex != dev->iflink && | |
2488 | nla_put_u32(skb, IFLA_LINK, dev->iflink))) | |
2489 | goto nla_put_failure; | |
2490 | ||
2491 | br_afspec = nla_nest_start(skb, IFLA_AF_SPEC); | |
2492 | if (!br_afspec) | |
2493 | goto nla_put_failure; | |
2494 | ||
2495 | if (nla_put_u16(skb, IFLA_BRIDGE_FLAGS, BRIDGE_FLAGS_SELF) || | |
2496 | nla_put_u16(skb, IFLA_BRIDGE_MODE, mode)) { | |
2497 | nla_nest_cancel(skb, br_afspec); | |
2498 | goto nla_put_failure; | |
2499 | } | |
2500 | nla_nest_end(skb, br_afspec); | |
2501 | ||
2502 | return nlmsg_end(skb, nlh); | |
2503 | nla_put_failure: | |
2504 | nlmsg_cancel(skb, nlh); | |
2505 | return -EMSGSIZE; | |
2506 | } | |
2507 | EXPORT_SYMBOL(ndo_dflt_bridge_getlink); | |
2508 | ||
e5a55a89 JF |
2509 | static int rtnl_bridge_getlink(struct sk_buff *skb, struct netlink_callback *cb) |
2510 | { | |
2511 | struct net *net = sock_net(skb->sk); | |
2512 | struct net_device *dev; | |
2513 | int idx = 0; | |
2514 | u32 portid = NETLINK_CB(cb->skb).portid; | |
2515 | u32 seq = cb->nlh->nlmsg_seq; | |
6cbdceeb VY |
2516 | struct nlattr *extfilt; |
2517 | u32 filter_mask = 0; | |
2518 | ||
3e805ad2 | 2519 | extfilt = nlmsg_find_attr(cb->nlh, sizeof(struct ifinfomsg), |
6cbdceeb VY |
2520 | IFLA_EXT_MASK); |
2521 | if (extfilt) | |
2522 | filter_mask = nla_get_u32(extfilt); | |
e5a55a89 JF |
2523 | |
2524 | rcu_read_lock(); | |
2525 | for_each_netdev_rcu(net, dev) { | |
2526 | const struct net_device_ops *ops = dev->netdev_ops; | |
898e5061 | 2527 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
e5a55a89 | 2528 | |
898e5061 | 2529 | if (br_dev && br_dev->netdev_ops->ndo_bridge_getlink) { |
25b1e679 | 2530 | if (idx >= cb->args[0] && |
898e5061 | 2531 | br_dev->netdev_ops->ndo_bridge_getlink( |
6cbdceeb | 2532 | skb, portid, seq, dev, filter_mask) < 0) |
e5a55a89 | 2533 | break; |
25b1e679 | 2534 | idx++; |
e5a55a89 JF |
2535 | } |
2536 | ||
2537 | if (ops->ndo_bridge_getlink) { | |
25b1e679 | 2538 | if (idx >= cb->args[0] && |
6cbdceeb VY |
2539 | ops->ndo_bridge_getlink(skb, portid, seq, dev, |
2540 | filter_mask) < 0) | |
e5a55a89 | 2541 | break; |
25b1e679 | 2542 | idx++; |
e5a55a89 JF |
2543 | } |
2544 | } | |
2545 | rcu_read_unlock(); | |
2546 | cb->args[0] = idx; | |
2547 | ||
2548 | return skb->len; | |
2549 | } | |
2550 | ||
2469ffd7 JF |
2551 | static inline size_t bridge_nlmsg_size(void) |
2552 | { | |
2553 | return NLMSG_ALIGN(sizeof(struct ifinfomsg)) | |
2554 | + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */ | |
2555 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */ | |
2556 | + nla_total_size(sizeof(u32)) /* IFLA_MASTER */ | |
2557 | + nla_total_size(sizeof(u32)) /* IFLA_MTU */ | |
2558 | + nla_total_size(sizeof(u32)) /* IFLA_LINK */ | |
2559 | + nla_total_size(sizeof(u32)) /* IFLA_OPERSTATE */ | |
2560 | + nla_total_size(sizeof(u8)) /* IFLA_PROTINFO */ | |
2561 | + nla_total_size(sizeof(struct nlattr)) /* IFLA_AF_SPEC */ | |
2562 | + nla_total_size(sizeof(u16)) /* IFLA_BRIDGE_FLAGS */ | |
2563 | + nla_total_size(sizeof(u16)); /* IFLA_BRIDGE_MODE */ | |
2564 | } | |
2565 | ||
2566 | static int rtnl_bridge_notify(struct net_device *dev, u16 flags) | |
2567 | { | |
2568 | struct net *net = dev_net(dev); | |
898e5061 | 2569 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
2469ffd7 JF |
2570 | struct sk_buff *skb; |
2571 | int err = -EOPNOTSUPP; | |
2572 | ||
2573 | skb = nlmsg_new(bridge_nlmsg_size(), GFP_ATOMIC); | |
2574 | if (!skb) { | |
2575 | err = -ENOMEM; | |
2576 | goto errout; | |
2577 | } | |
2578 | ||
c38e01b8 | 2579 | if ((!flags || (flags & BRIDGE_FLAGS_MASTER)) && |
898e5061 | 2580 | br_dev && br_dev->netdev_ops->ndo_bridge_getlink) { |
6cbdceeb | 2581 | err = br_dev->netdev_ops->ndo_bridge_getlink(skb, 0, 0, dev, 0); |
c38e01b8 JF |
2582 | if (err < 0) |
2583 | goto errout; | |
2584 | } | |
2469ffd7 | 2585 | |
c38e01b8 JF |
2586 | if ((flags & BRIDGE_FLAGS_SELF) && |
2587 | dev->netdev_ops->ndo_bridge_getlink) { | |
6cbdceeb | 2588 | err = dev->netdev_ops->ndo_bridge_getlink(skb, 0, 0, dev, 0); |
c38e01b8 JF |
2589 | if (err < 0) |
2590 | goto errout; | |
2591 | } | |
2469ffd7 JF |
2592 | |
2593 | rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC); | |
2594 | return 0; | |
2595 | errout: | |
2596 | WARN_ON(err == -EMSGSIZE); | |
2597 | kfree_skb(skb); | |
2598 | rtnl_set_sk_err(net, RTNLGRP_LINK, err); | |
2599 | return err; | |
2600 | } | |
2601 | ||
661d2967 | 2602 | static int rtnl_bridge_setlink(struct sk_buff *skb, struct nlmsghdr *nlh) |
e5a55a89 JF |
2603 | { |
2604 | struct net *net = sock_net(skb->sk); | |
2605 | struct ifinfomsg *ifm; | |
2606 | struct net_device *dev; | |
2469ffd7 JF |
2607 | struct nlattr *br_spec, *attr = NULL; |
2608 | int rem, err = -EOPNOTSUPP; | |
c38e01b8 JF |
2609 | u16 oflags, flags = 0; |
2610 | bool have_flags = false; | |
e5a55a89 JF |
2611 | |
2612 | if (nlmsg_len(nlh) < sizeof(*ifm)) | |
2613 | return -EINVAL; | |
2614 | ||
2615 | ifm = nlmsg_data(nlh); | |
2616 | if (ifm->ifi_family != AF_BRIDGE) | |
2617 | return -EPFNOSUPPORT; | |
2618 | ||
2619 | dev = __dev_get_by_index(net, ifm->ifi_index); | |
2620 | if (!dev) { | |
2621 | pr_info("PF_BRIDGE: RTM_SETLINK with unknown ifindex\n"); | |
2622 | return -ENODEV; | |
2623 | } | |
2624 | ||
2469ffd7 JF |
2625 | br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); |
2626 | if (br_spec) { | |
2627 | nla_for_each_nested(attr, br_spec, rem) { | |
2628 | if (nla_type(attr) == IFLA_BRIDGE_FLAGS) { | |
c38e01b8 | 2629 | have_flags = true; |
2469ffd7 JF |
2630 | flags = nla_get_u16(attr); |
2631 | break; | |
2632 | } | |
2633 | } | |
2634 | } | |
2635 | ||
c38e01b8 JF |
2636 | oflags = flags; |
2637 | ||
2469ffd7 | 2638 | if (!flags || (flags & BRIDGE_FLAGS_MASTER)) { |
898e5061 JP |
2639 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
2640 | ||
2641 | if (!br_dev || !br_dev->netdev_ops->ndo_bridge_setlink) { | |
2469ffd7 JF |
2642 | err = -EOPNOTSUPP; |
2643 | goto out; | |
2644 | } | |
2645 | ||
898e5061 | 2646 | err = br_dev->netdev_ops->ndo_bridge_setlink(dev, nlh); |
e5a55a89 JF |
2647 | if (err) |
2648 | goto out; | |
2469ffd7 JF |
2649 | |
2650 | flags &= ~BRIDGE_FLAGS_MASTER; | |
e5a55a89 JF |
2651 | } |
2652 | ||
2469ffd7 JF |
2653 | if ((flags & BRIDGE_FLAGS_SELF)) { |
2654 | if (!dev->netdev_ops->ndo_bridge_setlink) | |
2655 | err = -EOPNOTSUPP; | |
2656 | else | |
2657 | err = dev->netdev_ops->ndo_bridge_setlink(dev, nlh); | |
2658 | ||
2659 | if (!err) | |
2660 | flags &= ~BRIDGE_FLAGS_SELF; | |
2661 | } | |
e5a55a89 | 2662 | |
c38e01b8 | 2663 | if (have_flags) |
2469ffd7 JF |
2664 | memcpy(nla_data(attr), &flags, sizeof(flags)); |
2665 | /* Generate event to notify upper layer of bridge change */ | |
2666 | if (!err) | |
c38e01b8 | 2667 | err = rtnl_bridge_notify(dev, oflags); |
e5a55a89 JF |
2668 | out: |
2669 | return err; | |
2670 | } | |
2671 | ||
661d2967 | 2672 | static int rtnl_bridge_dellink(struct sk_buff *skb, struct nlmsghdr *nlh) |
407af329 VY |
2673 | { |
2674 | struct net *net = sock_net(skb->sk); | |
2675 | struct ifinfomsg *ifm; | |
2676 | struct net_device *dev; | |
2677 | struct nlattr *br_spec, *attr = NULL; | |
2678 | int rem, err = -EOPNOTSUPP; | |
2679 | u16 oflags, flags = 0; | |
2680 | bool have_flags = false; | |
2681 | ||
2682 | if (nlmsg_len(nlh) < sizeof(*ifm)) | |
2683 | return -EINVAL; | |
2684 | ||
2685 | ifm = nlmsg_data(nlh); | |
2686 | if (ifm->ifi_family != AF_BRIDGE) | |
2687 | return -EPFNOSUPPORT; | |
2688 | ||
2689 | dev = __dev_get_by_index(net, ifm->ifi_index); | |
2690 | if (!dev) { | |
2691 | pr_info("PF_BRIDGE: RTM_SETLINK with unknown ifindex\n"); | |
2692 | return -ENODEV; | |
2693 | } | |
2694 | ||
2695 | br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); | |
2696 | if (br_spec) { | |
2697 | nla_for_each_nested(attr, br_spec, rem) { | |
2698 | if (nla_type(attr) == IFLA_BRIDGE_FLAGS) { | |
2699 | have_flags = true; | |
2700 | flags = nla_get_u16(attr); | |
2701 | break; | |
2702 | } | |
2703 | } | |
2704 | } | |
2705 | ||
2706 | oflags = flags; | |
2707 | ||
2708 | if (!flags || (flags & BRIDGE_FLAGS_MASTER)) { | |
2709 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); | |
2710 | ||
2711 | if (!br_dev || !br_dev->netdev_ops->ndo_bridge_dellink) { | |
2712 | err = -EOPNOTSUPP; | |
2713 | goto out; | |
2714 | } | |
2715 | ||
2716 | err = br_dev->netdev_ops->ndo_bridge_dellink(dev, nlh); | |
2717 | if (err) | |
2718 | goto out; | |
2719 | ||
2720 | flags &= ~BRIDGE_FLAGS_MASTER; | |
2721 | } | |
2722 | ||
2723 | if ((flags & BRIDGE_FLAGS_SELF)) { | |
2724 | if (!dev->netdev_ops->ndo_bridge_dellink) | |
2725 | err = -EOPNOTSUPP; | |
2726 | else | |
2727 | err = dev->netdev_ops->ndo_bridge_dellink(dev, nlh); | |
2728 | ||
2729 | if (!err) | |
2730 | flags &= ~BRIDGE_FLAGS_SELF; | |
2731 | } | |
2732 | ||
2733 | if (have_flags) | |
2734 | memcpy(nla_data(attr), &flags, sizeof(flags)); | |
2735 | /* Generate event to notify upper layer of bridge change */ | |
2736 | if (!err) | |
2737 | err = rtnl_bridge_notify(dev, oflags); | |
2738 | out: | |
2739 | return err; | |
2740 | } | |
2741 | ||
1da177e4 LT |
2742 | /* Process one rtnetlink message. */ |
2743 | ||
1d00a4eb | 2744 | static int rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh) |
1da177e4 | 2745 | { |
3b1e0a65 | 2746 | struct net *net = sock_net(skb->sk); |
e2849863 | 2747 | rtnl_doit_func doit; |
1da177e4 | 2748 | int sz_idx, kind; |
1da177e4 LT |
2749 | int family; |
2750 | int type; | |
2907c35f | 2751 | int err; |
1da177e4 | 2752 | |
1da177e4 | 2753 | type = nlh->nlmsg_type; |
1da177e4 | 2754 | if (type > RTM_MAX) |
038890fe | 2755 | return -EOPNOTSUPP; |
1da177e4 LT |
2756 | |
2757 | type -= RTM_BASE; | |
2758 | ||
2759 | /* All the messages must have at least 1 byte length */ | |
573ce260 | 2760 | if (nlmsg_len(nlh) < sizeof(struct rtgenmsg)) |
1da177e4 LT |
2761 | return 0; |
2762 | ||
573ce260 | 2763 | family = ((struct rtgenmsg *)nlmsg_data(nlh))->rtgen_family; |
1da177e4 LT |
2764 | sz_idx = type>>2; |
2765 | kind = type&3; | |
2766 | ||
dfc47ef8 | 2767 | if (kind != 2 && !ns_capable(net->user_ns, CAP_NET_ADMIN)) |
1d00a4eb | 2768 | return -EPERM; |
1da177e4 | 2769 | |
b8f3ab42 | 2770 | if (kind == 2 && nlh->nlmsg_flags&NLM_F_DUMP) { |
97c53cac | 2771 | struct sock *rtnl; |
e2849863 | 2772 | rtnl_dumpit_func dumpit; |
c7ac8679 GR |
2773 | rtnl_calcit_func calcit; |
2774 | u16 min_dump_alloc = 0; | |
1da177e4 | 2775 | |
e2849863 TG |
2776 | dumpit = rtnl_get_dumpit(family, type); |
2777 | if (dumpit == NULL) | |
038890fe | 2778 | return -EOPNOTSUPP; |
c7ac8679 GR |
2779 | calcit = rtnl_get_calcit(family, type); |
2780 | if (calcit) | |
115c9b81 | 2781 | min_dump_alloc = calcit(skb, nlh); |
9ac4a169 | 2782 | |
2907c35f | 2783 | __rtnl_unlock(); |
97c53cac | 2784 | rtnl = net->rtnl; |
80d326fa PNA |
2785 | { |
2786 | struct netlink_dump_control c = { | |
2787 | .dump = dumpit, | |
2788 | .min_dump_alloc = min_dump_alloc, | |
2789 | }; | |
2790 | err = netlink_dump_start(rtnl, skb, nlh, &c); | |
2791 | } | |
2907c35f ED |
2792 | rtnl_lock(); |
2793 | return err; | |
1da177e4 LT |
2794 | } |
2795 | ||
e2849863 TG |
2796 | doit = rtnl_get_doit(family, type); |
2797 | if (doit == NULL) | |
038890fe | 2798 | return -EOPNOTSUPP; |
1da177e4 | 2799 | |
661d2967 | 2800 | return doit(skb, nlh); |
1da177e4 LT |
2801 | } |
2802 | ||
cd40b7d3 | 2803 | static void rtnetlink_rcv(struct sk_buff *skb) |
1da177e4 | 2804 | { |
cd40b7d3 DL |
2805 | rtnl_lock(); |
2806 | netlink_rcv_skb(skb, &rtnetlink_rcv_msg); | |
2807 | rtnl_unlock(); | |
1da177e4 LT |
2808 | } |
2809 | ||
1da177e4 LT |
2810 | static int rtnetlink_event(struct notifier_block *this, unsigned long event, void *ptr) |
2811 | { | |
351638e7 | 2812 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
e9dc8653 | 2813 | |
1da177e4 | 2814 | switch (event) { |
1da177e4 LT |
2815 | case NETDEV_UP: |
2816 | case NETDEV_DOWN: | |
10de05af | 2817 | case NETDEV_PRE_UP: |
d90a909e EB |
2818 | case NETDEV_POST_INIT: |
2819 | case NETDEV_REGISTER: | |
1da177e4 | 2820 | case NETDEV_CHANGE: |
755d0e77 | 2821 | case NETDEV_PRE_TYPE_CHANGE: |
1da177e4 | 2822 | case NETDEV_GOING_DOWN: |
a2835763 | 2823 | case NETDEV_UNREGISTER: |
0115e8e3 | 2824 | case NETDEV_UNREGISTER_FINAL: |
ac3d3f81 AW |
2825 | case NETDEV_RELEASE: |
2826 | case NETDEV_JOIN: | |
1da177e4 LT |
2827 | break; |
2828 | default: | |
7f294054 | 2829 | rtmsg_ifinfo(RTM_NEWLINK, dev, 0, GFP_KERNEL); |
1da177e4 LT |
2830 | break; |
2831 | } | |
2832 | return NOTIFY_DONE; | |
2833 | } | |
2834 | ||
2835 | static struct notifier_block rtnetlink_dev_notifier = { | |
2836 | .notifier_call = rtnetlink_event, | |
2837 | }; | |
2838 | ||
97c53cac | 2839 | |
2c8c1e72 | 2840 | static int __net_init rtnetlink_net_init(struct net *net) |
97c53cac DL |
2841 | { |
2842 | struct sock *sk; | |
a31f2d17 PNA |
2843 | struct netlink_kernel_cfg cfg = { |
2844 | .groups = RTNLGRP_MAX, | |
2845 | .input = rtnetlink_rcv, | |
2846 | .cb_mutex = &rtnl_mutex, | |
9785e10a | 2847 | .flags = NL_CFG_F_NONROOT_RECV, |
a31f2d17 PNA |
2848 | }; |
2849 | ||
9f00d977 | 2850 | sk = netlink_kernel_create(net, NETLINK_ROUTE, &cfg); |
97c53cac DL |
2851 | if (!sk) |
2852 | return -ENOMEM; | |
97c53cac DL |
2853 | net->rtnl = sk; |
2854 | return 0; | |
2855 | } | |
2856 | ||
2c8c1e72 | 2857 | static void __net_exit rtnetlink_net_exit(struct net *net) |
97c53cac | 2858 | { |
775516bf DL |
2859 | netlink_kernel_release(net->rtnl); |
2860 | net->rtnl = NULL; | |
97c53cac DL |
2861 | } |
2862 | ||
2863 | static struct pernet_operations rtnetlink_net_ops = { | |
2864 | .init = rtnetlink_net_init, | |
2865 | .exit = rtnetlink_net_exit, | |
2866 | }; | |
2867 | ||
1da177e4 LT |
2868 | void __init rtnetlink_init(void) |
2869 | { | |
97c53cac | 2870 | if (register_pernet_subsys(&rtnetlink_net_ops)) |
1da177e4 | 2871 | panic("rtnetlink_init: cannot initialize rtnetlink\n"); |
97c53cac | 2872 | |
1da177e4 | 2873 | register_netdevice_notifier(&rtnetlink_dev_notifier); |
340d17fc | 2874 | |
c7ac8679 GR |
2875 | rtnl_register(PF_UNSPEC, RTM_GETLINK, rtnl_getlink, |
2876 | rtnl_dump_ifinfo, rtnl_calcit); | |
2877 | rtnl_register(PF_UNSPEC, RTM_SETLINK, rtnl_setlink, NULL, NULL); | |
2878 | rtnl_register(PF_UNSPEC, RTM_NEWLINK, rtnl_newlink, NULL, NULL); | |
2879 | rtnl_register(PF_UNSPEC, RTM_DELLINK, rtnl_dellink, NULL, NULL); | |
687ad8cc | 2880 | |
c7ac8679 GR |
2881 | rtnl_register(PF_UNSPEC, RTM_GETADDR, NULL, rtnl_dump_all, NULL); |
2882 | rtnl_register(PF_UNSPEC, RTM_GETROUTE, NULL, rtnl_dump_all, NULL); | |
77162022 JF |
2883 | |
2884 | rtnl_register(PF_BRIDGE, RTM_NEWNEIGH, rtnl_fdb_add, NULL, NULL); | |
2885 | rtnl_register(PF_BRIDGE, RTM_DELNEIGH, rtnl_fdb_del, NULL, NULL); | |
2886 | rtnl_register(PF_BRIDGE, RTM_GETNEIGH, NULL, rtnl_fdb_dump, NULL); | |
e5a55a89 JF |
2887 | |
2888 | rtnl_register(PF_BRIDGE, RTM_GETLINK, NULL, rtnl_bridge_getlink, NULL); | |
407af329 | 2889 | rtnl_register(PF_BRIDGE, RTM_DELLINK, rtnl_bridge_dellink, NULL, NULL); |
e5a55a89 | 2890 | rtnl_register(PF_BRIDGE, RTM_SETLINK, rtnl_bridge_setlink, NULL, NULL); |
1da177e4 LT |
2891 | } |
2892 |