Commit | Line | Data |
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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 | ||
51057f2f | 131 | return tab ? tab[msgindex].doit : NULL; |
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 | ||
51057f2f | 146 | return tab ? tab[msgindex].dumpit : NULL; |
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 | ||
161 | return tab ? tab[msgindex].calcit : NULL; | |
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 | ||
38f7b870 PM |
368 | static size_t rtnl_link_get_size(const struct net_device *dev) |
369 | { | |
370 | const struct rtnl_link_ops *ops = dev->rtnl_link_ops; | |
371 | size_t size; | |
372 | ||
373 | if (!ops) | |
374 | return 0; | |
375 | ||
369cf77a TG |
376 | size = nla_total_size(sizeof(struct nlattr)) + /* IFLA_LINKINFO */ |
377 | nla_total_size(strlen(ops->kind) + 1); /* IFLA_INFO_KIND */ | |
38f7b870 PM |
378 | |
379 | if (ops->get_size) | |
380 | /* IFLA_INFO_DATA + nested data */ | |
369cf77a | 381 | size += nla_total_size(sizeof(struct nlattr)) + |
38f7b870 PM |
382 | ops->get_size(dev); |
383 | ||
384 | if (ops->get_xstats_size) | |
369cf77a TG |
385 | /* IFLA_INFO_XSTATS */ |
386 | size += nla_total_size(ops->get_xstats_size(dev)); | |
38f7b870 PM |
387 | |
388 | return size; | |
389 | } | |
390 | ||
f8ff182c TG |
391 | static LIST_HEAD(rtnl_af_ops); |
392 | ||
393 | static const struct rtnl_af_ops *rtnl_af_lookup(const int family) | |
394 | { | |
395 | const struct rtnl_af_ops *ops; | |
396 | ||
397 | list_for_each_entry(ops, &rtnl_af_ops, list) { | |
398 | if (ops->family == family) | |
399 | return ops; | |
400 | } | |
401 | ||
402 | return NULL; | |
403 | } | |
404 | ||
405 | /** | |
406 | * __rtnl_af_register - Register rtnl_af_ops with rtnetlink. | |
407 | * @ops: struct rtnl_af_ops * to register | |
408 | * | |
409 | * The caller must hold the rtnl_mutex. | |
410 | * | |
411 | * Returns 0 on success or a negative error code. | |
412 | */ | |
413 | int __rtnl_af_register(struct rtnl_af_ops *ops) | |
414 | { | |
415 | list_add_tail(&ops->list, &rtnl_af_ops); | |
416 | return 0; | |
417 | } | |
418 | EXPORT_SYMBOL_GPL(__rtnl_af_register); | |
419 | ||
420 | /** | |
421 | * rtnl_af_register - Register rtnl_af_ops with rtnetlink. | |
422 | * @ops: struct rtnl_af_ops * to register | |
423 | * | |
424 | * Returns 0 on success or a negative error code. | |
425 | */ | |
426 | int rtnl_af_register(struct rtnl_af_ops *ops) | |
427 | { | |
428 | int err; | |
429 | ||
430 | rtnl_lock(); | |
431 | err = __rtnl_af_register(ops); | |
432 | rtnl_unlock(); | |
433 | return err; | |
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 | ||
38f7b870 PM |
480 | static int rtnl_link_fill(struct sk_buff *skb, const struct net_device *dev) |
481 | { | |
482 | const struct rtnl_link_ops *ops = dev->rtnl_link_ops; | |
483 | struct nlattr *linkinfo, *data; | |
484 | int err = -EMSGSIZE; | |
485 | ||
486 | linkinfo = nla_nest_start(skb, IFLA_LINKINFO); | |
487 | if (linkinfo == NULL) | |
488 | goto out; | |
489 | ||
490 | if (nla_put_string(skb, IFLA_INFO_KIND, ops->kind) < 0) | |
491 | goto err_cancel_link; | |
492 | if (ops->fill_xstats) { | |
493 | err = ops->fill_xstats(skb, dev); | |
494 | if (err < 0) | |
495 | goto err_cancel_link; | |
496 | } | |
497 | if (ops->fill_info) { | |
498 | data = nla_nest_start(skb, IFLA_INFO_DATA); | |
499 | if (data == NULL) | |
500 | goto err_cancel_link; | |
501 | err = ops->fill_info(skb, dev); | |
502 | if (err < 0) | |
503 | goto err_cancel_data; | |
504 | nla_nest_end(skb, data); | |
505 | } | |
506 | ||
507 | nla_nest_end(skb, linkinfo); | |
508 | return 0; | |
509 | ||
510 | err_cancel_data: | |
511 | nla_nest_cancel(skb, data); | |
512 | err_cancel_link: | |
513 | nla_nest_cancel(skb, linkinfo); | |
514 | out: | |
515 | return err; | |
516 | } | |
517 | ||
db46edc6 | 518 | static const int rtm_min[RTM_NR_FAMILIES] = |
1da177e4 | 519 | { |
f90a0a74 TG |
520 | [RTM_FAM(RTM_NEWLINK)] = NLMSG_LENGTH(sizeof(struct ifinfomsg)), |
521 | [RTM_FAM(RTM_NEWADDR)] = NLMSG_LENGTH(sizeof(struct ifaddrmsg)), | |
522 | [RTM_FAM(RTM_NEWROUTE)] = NLMSG_LENGTH(sizeof(struct rtmsg)), | |
14c0b97d | 523 | [RTM_FAM(RTM_NEWRULE)] = NLMSG_LENGTH(sizeof(struct fib_rule_hdr)), |
f90a0a74 TG |
524 | [RTM_FAM(RTM_NEWQDISC)] = NLMSG_LENGTH(sizeof(struct tcmsg)), |
525 | [RTM_FAM(RTM_NEWTCLASS)] = NLMSG_LENGTH(sizeof(struct tcmsg)), | |
526 | [RTM_FAM(RTM_NEWTFILTER)] = NLMSG_LENGTH(sizeof(struct tcmsg)), | |
527 | [RTM_FAM(RTM_NEWACTION)] = NLMSG_LENGTH(sizeof(struct tcamsg)), | |
f90a0a74 TG |
528 | [RTM_FAM(RTM_GETMULTICAST)] = NLMSG_LENGTH(sizeof(struct rtgenmsg)), |
529 | [RTM_FAM(RTM_GETANYCAST)] = NLMSG_LENGTH(sizeof(struct rtgenmsg)), | |
1da177e4 LT |
530 | }; |
531 | ||
db46edc6 | 532 | static const int rta_max[RTM_NR_FAMILIES] = |
1da177e4 | 533 | { |
f90a0a74 TG |
534 | [RTM_FAM(RTM_NEWLINK)] = IFLA_MAX, |
535 | [RTM_FAM(RTM_NEWADDR)] = IFA_MAX, | |
536 | [RTM_FAM(RTM_NEWROUTE)] = RTA_MAX, | |
14c0b97d | 537 | [RTM_FAM(RTM_NEWRULE)] = FRA_MAX, |
f90a0a74 TG |
538 | [RTM_FAM(RTM_NEWQDISC)] = TCA_MAX, |
539 | [RTM_FAM(RTM_NEWTCLASS)] = TCA_MAX, | |
540 | [RTM_FAM(RTM_NEWTFILTER)] = TCA_MAX, | |
541 | [RTM_FAM(RTM_NEWACTION)] = TCAA_MAX, | |
1da177e4 LT |
542 | }; |
543 | ||
95c96174 | 544 | int rtnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, unsigned int group, int echo) |
1da177e4 | 545 | { |
97c53cac | 546 | struct sock *rtnl = net->rtnl; |
1da177e4 LT |
547 | int err = 0; |
548 | ||
ac6d439d | 549 | NETLINK_CB(skb).dst_group = group; |
1da177e4 LT |
550 | if (echo) |
551 | atomic_inc(&skb->users); | |
552 | netlink_broadcast(rtnl, skb, pid, group, GFP_KERNEL); | |
553 | if (echo) | |
554 | err = netlink_unicast(rtnl, skb, pid, MSG_DONTWAIT); | |
555 | return err; | |
556 | } | |
557 | ||
97c53cac | 558 | int rtnl_unicast(struct sk_buff *skb, struct net *net, u32 pid) |
2942e900 | 559 | { |
97c53cac DL |
560 | struct sock *rtnl = net->rtnl; |
561 | ||
2942e900 TG |
562 | return nlmsg_unicast(rtnl, skb, pid); |
563 | } | |
e0d087af | 564 | EXPORT_SYMBOL(rtnl_unicast); |
2942e900 | 565 | |
1ce85fe4 PNA |
566 | void rtnl_notify(struct sk_buff *skb, struct net *net, u32 pid, u32 group, |
567 | struct nlmsghdr *nlh, gfp_t flags) | |
97676b6b | 568 | { |
97c53cac | 569 | struct sock *rtnl = net->rtnl; |
97676b6b TG |
570 | int report = 0; |
571 | ||
572 | if (nlh) | |
573 | report = nlmsg_report(nlh); | |
574 | ||
1ce85fe4 | 575 | nlmsg_notify(rtnl, skb, pid, group, report, flags); |
97676b6b | 576 | } |
e0d087af | 577 | EXPORT_SYMBOL(rtnl_notify); |
97676b6b | 578 | |
97c53cac | 579 | void rtnl_set_sk_err(struct net *net, u32 group, int error) |
97676b6b | 580 | { |
97c53cac DL |
581 | struct sock *rtnl = net->rtnl; |
582 | ||
97676b6b TG |
583 | netlink_set_err(rtnl, 0, group, error); |
584 | } | |
e0d087af | 585 | EXPORT_SYMBOL(rtnl_set_sk_err); |
97676b6b | 586 | |
1da177e4 LT |
587 | int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics) |
588 | { | |
2d7202bf TG |
589 | struct nlattr *mx; |
590 | int i, valid = 0; | |
591 | ||
592 | mx = nla_nest_start(skb, RTA_METRICS); | |
593 | if (mx == NULL) | |
594 | return -ENOBUFS; | |
595 | ||
596 | for (i = 0; i < RTAX_MAX; i++) { | |
597 | if (metrics[i]) { | |
598 | valid++; | |
a6574349 DM |
599 | if (nla_put_u32(skb, i+1, metrics[i])) |
600 | goto nla_put_failure; | |
2d7202bf | 601 | } |
1da177e4 | 602 | } |
1da177e4 | 603 | |
a57d27fc DM |
604 | if (!valid) { |
605 | nla_nest_cancel(skb, mx); | |
606 | return 0; | |
607 | } | |
2d7202bf TG |
608 | |
609 | return nla_nest_end(skb, mx); | |
610 | ||
611 | nla_put_failure: | |
bc3ed28c TG |
612 | nla_nest_cancel(skb, mx); |
613 | return -EMSGSIZE; | |
1da177e4 | 614 | } |
e0d087af | 615 | EXPORT_SYMBOL(rtnetlink_put_metrics); |
1da177e4 | 616 | |
e3703b3d | 617 | int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst, u32 id, |
87a50699 | 618 | long expires, u32 error) |
e3703b3d TG |
619 | { |
620 | struct rta_cacheinfo ci = { | |
a399a805 | 621 | .rta_lastuse = jiffies_delta_to_clock_t(jiffies - dst->lastuse), |
e3703b3d TG |
622 | .rta_used = dst->__use, |
623 | .rta_clntref = atomic_read(&(dst->__refcnt)), | |
624 | .rta_error = error, | |
625 | .rta_id = id, | |
e3703b3d TG |
626 | }; |
627 | ||
8253947e LW |
628 | if (expires) { |
629 | unsigned long clock; | |
e3703b3d | 630 | |
8253947e LW |
631 | clock = jiffies_to_clock_t(abs(expires)); |
632 | clock = min_t(unsigned long, clock, INT_MAX); | |
633 | ci.rta_expires = (expires > 0) ? clock : -clock; | |
634 | } | |
e3703b3d TG |
635 | return nla_put(skb, RTA_CACHEINFO, sizeof(ci), &ci); |
636 | } | |
e3703b3d | 637 | EXPORT_SYMBOL_GPL(rtnl_put_cacheinfo); |
1da177e4 | 638 | |
93b2d4a2 | 639 | static void set_operstate(struct net_device *dev, unsigned char transition) |
b00055aa SR |
640 | { |
641 | unsigned char operstate = dev->operstate; | |
642 | ||
e0d087af | 643 | switch (transition) { |
b00055aa SR |
644 | case IF_OPER_UP: |
645 | if ((operstate == IF_OPER_DORMANT || | |
646 | operstate == IF_OPER_UNKNOWN) && | |
647 | !netif_dormant(dev)) | |
648 | operstate = IF_OPER_UP; | |
649 | break; | |
650 | ||
651 | case IF_OPER_DORMANT: | |
652 | if (operstate == IF_OPER_UP || | |
653 | operstate == IF_OPER_UNKNOWN) | |
654 | operstate = IF_OPER_DORMANT; | |
655 | break; | |
3ff50b79 | 656 | } |
b00055aa SR |
657 | |
658 | if (dev->operstate != operstate) { | |
659 | write_lock_bh(&dev_base_lock); | |
660 | dev->operstate = operstate; | |
661 | write_unlock_bh(&dev_base_lock); | |
93b2d4a2 DM |
662 | netdev_state_change(dev); |
663 | } | |
b00055aa SR |
664 | } |
665 | ||
b1beb681 JB |
666 | static unsigned int rtnl_dev_get_flags(const struct net_device *dev) |
667 | { | |
668 | return (dev->flags & ~(IFF_PROMISC | IFF_ALLMULTI)) | | |
669 | (dev->gflags & (IFF_PROMISC | IFF_ALLMULTI)); | |
670 | } | |
671 | ||
3729d502 PM |
672 | static unsigned int rtnl_dev_combine_flags(const struct net_device *dev, |
673 | const struct ifinfomsg *ifm) | |
674 | { | |
675 | unsigned int flags = ifm->ifi_flags; | |
676 | ||
677 | /* bugwards compatibility: ifi_change == 0 is treated as ~0 */ | |
678 | if (ifm->ifi_change) | |
679 | flags = (flags & ifm->ifi_change) | | |
b1beb681 | 680 | (rtnl_dev_get_flags(dev) & ~ifm->ifi_change); |
3729d502 PM |
681 | |
682 | return flags; | |
683 | } | |
684 | ||
b60c5115 | 685 | static void copy_rtnl_link_stats(struct rtnl_link_stats *a, |
be1f3c2c | 686 | const struct rtnl_link_stats64 *b) |
1da177e4 | 687 | { |
b60c5115 TG |
688 | a->rx_packets = b->rx_packets; |
689 | a->tx_packets = b->tx_packets; | |
690 | a->rx_bytes = b->rx_bytes; | |
691 | a->tx_bytes = b->tx_bytes; | |
692 | a->rx_errors = b->rx_errors; | |
693 | a->tx_errors = b->tx_errors; | |
694 | a->rx_dropped = b->rx_dropped; | |
695 | a->tx_dropped = b->tx_dropped; | |
696 | ||
697 | a->multicast = b->multicast; | |
698 | a->collisions = b->collisions; | |
699 | ||
700 | a->rx_length_errors = b->rx_length_errors; | |
701 | a->rx_over_errors = b->rx_over_errors; | |
702 | a->rx_crc_errors = b->rx_crc_errors; | |
703 | a->rx_frame_errors = b->rx_frame_errors; | |
704 | a->rx_fifo_errors = b->rx_fifo_errors; | |
705 | a->rx_missed_errors = b->rx_missed_errors; | |
706 | ||
707 | a->tx_aborted_errors = b->tx_aborted_errors; | |
708 | a->tx_carrier_errors = b->tx_carrier_errors; | |
709 | a->tx_fifo_errors = b->tx_fifo_errors; | |
710 | a->tx_heartbeat_errors = b->tx_heartbeat_errors; | |
711 | a->tx_window_errors = b->tx_window_errors; | |
712 | ||
713 | a->rx_compressed = b->rx_compressed; | |
714 | a->tx_compressed = b->tx_compressed; | |
10708f37 JE |
715 | } |
716 | ||
be1f3c2c | 717 | static void copy_rtnl_link_stats64(void *v, const struct rtnl_link_stats64 *b) |
10708f37 | 718 | { |
afdcba37 | 719 | memcpy(v, b, sizeof(*b)); |
10708f37 | 720 | } |
1da177e4 | 721 | |
c02db8c6 | 722 | /* All VF info */ |
115c9b81 GR |
723 | static inline int rtnl_vfinfo_size(const struct net_device *dev, |
724 | u32 ext_filter_mask) | |
ebc08a6f | 725 | { |
115c9b81 GR |
726 | if (dev->dev.parent && dev_is_pci(dev->dev.parent) && |
727 | (ext_filter_mask & RTEXT_FILTER_VF)) { | |
c02db8c6 | 728 | int num_vfs = dev_num_vf(dev->dev.parent); |
045de01a SF |
729 | size_t size = nla_total_size(sizeof(struct nlattr)); |
730 | size += nla_total_size(num_vfs * sizeof(struct nlattr)); | |
731 | size += num_vfs * | |
732 | (nla_total_size(sizeof(struct ifla_vf_mac)) + | |
733 | nla_total_size(sizeof(struct ifla_vf_vlan)) + | |
5f8444a3 GR |
734 | nla_total_size(sizeof(struct ifla_vf_tx_rate)) + |
735 | nla_total_size(sizeof(struct ifla_vf_spoofchk))); | |
c02db8c6 CW |
736 | return size; |
737 | } else | |
ebc08a6f WM |
738 | return 0; |
739 | } | |
740 | ||
57b61080 SF |
741 | static size_t rtnl_port_size(const struct net_device *dev) |
742 | { | |
743 | size_t port_size = nla_total_size(4) /* PORT_VF */ | |
744 | + nla_total_size(PORT_PROFILE_MAX) /* PORT_PROFILE */ | |
745 | + nla_total_size(sizeof(struct ifla_port_vsi)) | |
746 | /* PORT_VSI_TYPE */ | |
747 | + nla_total_size(PORT_UUID_MAX) /* PORT_INSTANCE_UUID */ | |
748 | + nla_total_size(PORT_UUID_MAX) /* PORT_HOST_UUID */ | |
749 | + nla_total_size(1) /* PROT_VDP_REQUEST */ | |
750 | + nla_total_size(2); /* PORT_VDP_RESPONSE */ | |
751 | size_t vf_ports_size = nla_total_size(sizeof(struct nlattr)); | |
752 | size_t vf_port_size = nla_total_size(sizeof(struct nlattr)) | |
753 | + port_size; | |
754 | size_t port_self_size = nla_total_size(sizeof(struct nlattr)) | |
755 | + port_size; | |
756 | ||
757 | if (!dev->netdev_ops->ndo_get_vf_port || !dev->dev.parent) | |
758 | return 0; | |
759 | if (dev_num_vf(dev->dev.parent)) | |
760 | return port_self_size + vf_ports_size + | |
761 | vf_port_size * dev_num_vf(dev->dev.parent); | |
762 | else | |
763 | return port_self_size; | |
764 | } | |
765 | ||
115c9b81 GR |
766 | static noinline size_t if_nlmsg_size(const struct net_device *dev, |
767 | u32 ext_filter_mask) | |
339bf98f TG |
768 | { |
769 | return NLMSG_ALIGN(sizeof(struct ifinfomsg)) | |
770 | + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */ | |
0b815a1a | 771 | + nla_total_size(IFALIASZ) /* IFLA_IFALIAS */ |
339bf98f TG |
772 | + nla_total_size(IFNAMSIZ) /* IFLA_QDISC */ |
773 | + nla_total_size(sizeof(struct rtnl_link_ifmap)) | |
774 | + nla_total_size(sizeof(struct rtnl_link_stats)) | |
adcfe196 | 775 | + nla_total_size(sizeof(struct rtnl_link_stats64)) |
339bf98f TG |
776 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */ |
777 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_BROADCAST */ | |
778 | + nla_total_size(4) /* IFLA_TXQLEN */ | |
779 | + nla_total_size(4) /* IFLA_WEIGHT */ | |
780 | + nla_total_size(4) /* IFLA_MTU */ | |
781 | + nla_total_size(4) /* IFLA_LINK */ | |
782 | + nla_total_size(4) /* IFLA_MASTER */ | |
edbc0bb3 | 783 | + nla_total_size(4) /* IFLA_PROMISCUITY */ |
76ff5cc9 JP |
784 | + nla_total_size(4) /* IFLA_NUM_TX_QUEUES */ |
785 | + nla_total_size(4) /* IFLA_NUM_RX_QUEUES */ | |
339bf98f | 786 | + nla_total_size(1) /* IFLA_OPERSTATE */ |
38f7b870 | 787 | + nla_total_size(1) /* IFLA_LINKMODE */ |
115c9b81 GR |
788 | + nla_total_size(ext_filter_mask |
789 | & RTEXT_FILTER_VF ? 4 : 0) /* IFLA_NUM_VF */ | |
790 | + rtnl_vfinfo_size(dev, ext_filter_mask) /* IFLA_VFINFO_LIST */ | |
57b61080 | 791 | + rtnl_port_size(dev) /* IFLA_VF_PORTS + IFLA_PORT_SELF */ |
f8ff182c TG |
792 | + rtnl_link_get_size(dev) /* IFLA_LINKINFO */ |
793 | + rtnl_link_get_af_size(dev); /* IFLA_AF_SPEC */ | |
339bf98f TG |
794 | } |
795 | ||
57b61080 SF |
796 | static int rtnl_vf_ports_fill(struct sk_buff *skb, struct net_device *dev) |
797 | { | |
798 | struct nlattr *vf_ports; | |
799 | struct nlattr *vf_port; | |
800 | int vf; | |
801 | int err; | |
802 | ||
803 | vf_ports = nla_nest_start(skb, IFLA_VF_PORTS); | |
804 | if (!vf_ports) | |
805 | return -EMSGSIZE; | |
806 | ||
807 | for (vf = 0; vf < dev_num_vf(dev->dev.parent); vf++) { | |
808 | vf_port = nla_nest_start(skb, IFLA_VF_PORT); | |
8ca94183 SF |
809 | if (!vf_port) |
810 | goto nla_put_failure; | |
a6574349 DM |
811 | if (nla_put_u32(skb, IFLA_PORT_VF, vf)) |
812 | goto nla_put_failure; | |
57b61080 | 813 | err = dev->netdev_ops->ndo_get_vf_port(dev, vf, skb); |
8ca94183 SF |
814 | if (err == -EMSGSIZE) |
815 | goto nla_put_failure; | |
57b61080 | 816 | if (err) { |
57b61080 SF |
817 | nla_nest_cancel(skb, vf_port); |
818 | continue; | |
819 | } | |
820 | nla_nest_end(skb, vf_port); | |
821 | } | |
822 | ||
823 | nla_nest_end(skb, vf_ports); | |
824 | ||
825 | return 0; | |
8ca94183 SF |
826 | |
827 | nla_put_failure: | |
828 | nla_nest_cancel(skb, vf_ports); | |
829 | return -EMSGSIZE; | |
57b61080 SF |
830 | } |
831 | ||
832 | static int rtnl_port_self_fill(struct sk_buff *skb, struct net_device *dev) | |
833 | { | |
834 | struct nlattr *port_self; | |
835 | int err; | |
836 | ||
837 | port_self = nla_nest_start(skb, IFLA_PORT_SELF); | |
838 | if (!port_self) | |
839 | return -EMSGSIZE; | |
840 | ||
841 | err = dev->netdev_ops->ndo_get_vf_port(dev, PORT_SELF_VF, skb); | |
842 | if (err) { | |
843 | nla_nest_cancel(skb, port_self); | |
8ca94183 | 844 | return (err == -EMSGSIZE) ? err : 0; |
57b61080 SF |
845 | } |
846 | ||
847 | nla_nest_end(skb, port_self); | |
848 | ||
849 | return 0; | |
850 | } | |
851 | ||
852 | static int rtnl_port_fill(struct sk_buff *skb, struct net_device *dev) | |
853 | { | |
854 | int err; | |
855 | ||
856 | if (!dev->netdev_ops->ndo_get_vf_port || !dev->dev.parent) | |
857 | return 0; | |
858 | ||
859 | err = rtnl_port_self_fill(skb, dev); | |
860 | if (err) | |
861 | return err; | |
862 | ||
863 | if (dev_num_vf(dev->dev.parent)) { | |
864 | err = rtnl_vf_ports_fill(skb, dev); | |
865 | if (err) | |
866 | return err; | |
867 | } | |
868 | ||
869 | return 0; | |
870 | } | |
871 | ||
b60c5115 | 872 | static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev, |
575c3e2a | 873 | int type, u32 pid, u32 seq, u32 change, |
115c9b81 | 874 | unsigned int flags, u32 ext_filter_mask) |
b60c5115 TG |
875 | { |
876 | struct ifinfomsg *ifm; | |
877 | struct nlmsghdr *nlh; | |
28172739 | 878 | struct rtnl_link_stats64 temp; |
be1f3c2c | 879 | const struct rtnl_link_stats64 *stats; |
f8ff182c TG |
880 | struct nlattr *attr, *af_spec; |
881 | struct rtnl_af_ops *af_ops; | |
1da177e4 | 882 | |
2907c35f | 883 | ASSERT_RTNL(); |
b60c5115 TG |
884 | nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ifm), flags); |
885 | if (nlh == NULL) | |
26932566 | 886 | return -EMSGSIZE; |
1da177e4 | 887 | |
b60c5115 TG |
888 | ifm = nlmsg_data(nlh); |
889 | ifm->ifi_family = AF_UNSPEC; | |
890 | ifm->__ifi_pad = 0; | |
891 | ifm->ifi_type = dev->type; | |
892 | ifm->ifi_index = dev->ifindex; | |
893 | ifm->ifi_flags = dev_get_flags(dev); | |
894 | ifm->ifi_change = change; | |
895 | ||
a6574349 DM |
896 | if (nla_put_string(skb, IFLA_IFNAME, dev->name) || |
897 | nla_put_u32(skb, IFLA_TXQLEN, dev->tx_queue_len) || | |
898 | nla_put_u8(skb, IFLA_OPERSTATE, | |
899 | netif_running(dev) ? dev->operstate : IF_OPER_DOWN) || | |
900 | nla_put_u8(skb, IFLA_LINKMODE, dev->link_mode) || | |
901 | nla_put_u32(skb, IFLA_MTU, dev->mtu) || | |
902 | nla_put_u32(skb, IFLA_GROUP, dev->group) || | |
edbc0bb3 | 903 | nla_put_u32(skb, IFLA_PROMISCUITY, dev->promiscuity) || |
76ff5cc9 | 904 | nla_put_u32(skb, IFLA_NUM_TX_QUEUES, dev->num_tx_queues) || |
1d69c2b3 | 905 | #ifdef CONFIG_RPS |
76ff5cc9 | 906 | nla_put_u32(skb, IFLA_NUM_RX_QUEUES, dev->num_rx_queues) || |
1d69c2b3 | 907 | #endif |
a6574349 DM |
908 | (dev->ifindex != dev->iflink && |
909 | nla_put_u32(skb, IFLA_LINK, dev->iflink)) || | |
910 | (dev->master && | |
911 | nla_put_u32(skb, IFLA_MASTER, dev->master->ifindex)) || | |
912 | (dev->qdisc && | |
913 | nla_put_string(skb, IFLA_QDISC, dev->qdisc->ops->id)) || | |
914 | (dev->ifalias && | |
915 | nla_put_string(skb, IFLA_IFALIAS, dev->ifalias))) | |
916 | goto nla_put_failure; | |
0b815a1a | 917 | |
1da177e4 LT |
918 | if (1) { |
919 | struct rtnl_link_ifmap map = { | |
920 | .mem_start = dev->mem_start, | |
921 | .mem_end = dev->mem_end, | |
922 | .base_addr = dev->base_addr, | |
923 | .irq = dev->irq, | |
924 | .dma = dev->dma, | |
925 | .port = dev->if_port, | |
926 | }; | |
a6574349 DM |
927 | if (nla_put(skb, IFLA_MAP, sizeof(map), &map)) |
928 | goto nla_put_failure; | |
1da177e4 LT |
929 | } |
930 | ||
931 | if (dev->addr_len) { | |
a6574349 DM |
932 | if (nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr) || |
933 | nla_put(skb, IFLA_BROADCAST, dev->addr_len, dev->broadcast)) | |
934 | goto nla_put_failure; | |
1da177e4 LT |
935 | } |
936 | ||
96e74088 PE |
937 | attr = nla_reserve(skb, IFLA_STATS, |
938 | sizeof(struct rtnl_link_stats)); | |
939 | if (attr == NULL) | |
940 | goto nla_put_failure; | |
b60c5115 | 941 | |
28172739 | 942 | stats = dev_get_stats(dev, &temp); |
96e74088 | 943 | copy_rtnl_link_stats(nla_data(attr), stats); |
1da177e4 | 944 | |
10708f37 JE |
945 | attr = nla_reserve(skb, IFLA_STATS64, |
946 | sizeof(struct rtnl_link_stats64)); | |
947 | if (attr == NULL) | |
948 | goto nla_put_failure; | |
10708f37 JE |
949 | copy_rtnl_link_stats64(nla_data(attr), stats); |
950 | ||
a6574349 DM |
951 | if (dev->dev.parent && (ext_filter_mask & RTEXT_FILTER_VF) && |
952 | nla_put_u32(skb, IFLA_NUM_VF, dev_num_vf(dev->dev.parent))) | |
953 | goto nla_put_failure; | |
57b61080 | 954 | |
115c9b81 GR |
955 | if (dev->netdev_ops->ndo_get_vf_config && dev->dev.parent |
956 | && (ext_filter_mask & RTEXT_FILTER_VF)) { | |
ebc08a6f | 957 | int i; |
ebc08a6f | 958 | |
c02db8c6 CW |
959 | struct nlattr *vfinfo, *vf; |
960 | int num_vfs = dev_num_vf(dev->dev.parent); | |
961 | ||
c02db8c6 CW |
962 | vfinfo = nla_nest_start(skb, IFLA_VFINFO_LIST); |
963 | if (!vfinfo) | |
964 | goto nla_put_failure; | |
965 | for (i = 0; i < num_vfs; i++) { | |
966 | struct ifla_vf_info ivi; | |
967 | struct ifla_vf_mac vf_mac; | |
968 | struct ifla_vf_vlan vf_vlan; | |
969 | struct ifla_vf_tx_rate vf_tx_rate; | |
5f8444a3 GR |
970 | struct ifla_vf_spoofchk vf_spoofchk; |
971 | ||
972 | /* | |
973 | * Not all SR-IOV capable drivers support the | |
974 | * spoofcheck query. Preset to -1 so the user | |
975 | * space tool can detect that the driver didn't | |
976 | * report anything. | |
977 | */ | |
978 | ivi.spoofchk = -1; | |
ebc08a6f WM |
979 | if (dev->netdev_ops->ndo_get_vf_config(dev, i, &ivi)) |
980 | break; | |
5f8444a3 GR |
981 | vf_mac.vf = |
982 | vf_vlan.vf = | |
983 | vf_tx_rate.vf = | |
984 | vf_spoofchk.vf = ivi.vf; | |
985 | ||
c02db8c6 CW |
986 | memcpy(vf_mac.mac, ivi.mac, sizeof(ivi.mac)); |
987 | vf_vlan.vlan = ivi.vlan; | |
988 | vf_vlan.qos = ivi.qos; | |
989 | vf_tx_rate.rate = ivi.tx_rate; | |
5f8444a3 | 990 | vf_spoofchk.setting = ivi.spoofchk; |
c02db8c6 CW |
991 | vf = nla_nest_start(skb, IFLA_VF_INFO); |
992 | if (!vf) { | |
993 | nla_nest_cancel(skb, vfinfo); | |
994 | goto nla_put_failure; | |
995 | } | |
a6574349 DM |
996 | if (nla_put(skb, IFLA_VF_MAC, sizeof(vf_mac), &vf_mac) || |
997 | nla_put(skb, IFLA_VF_VLAN, sizeof(vf_vlan), &vf_vlan) || | |
998 | nla_put(skb, IFLA_VF_TX_RATE, sizeof(vf_tx_rate), | |
999 | &vf_tx_rate) || | |
1000 | nla_put(skb, IFLA_VF_SPOOFCHK, sizeof(vf_spoofchk), | |
1001 | &vf_spoofchk)) | |
1002 | goto nla_put_failure; | |
c02db8c6 | 1003 | nla_nest_end(skb, vf); |
ebc08a6f | 1004 | } |
c02db8c6 | 1005 | nla_nest_end(skb, vfinfo); |
ebc08a6f | 1006 | } |
57b61080 SF |
1007 | |
1008 | if (rtnl_port_fill(skb, dev)) | |
1009 | goto nla_put_failure; | |
1010 | ||
38f7b870 PM |
1011 | if (dev->rtnl_link_ops) { |
1012 | if (rtnl_link_fill(skb, dev) < 0) | |
1013 | goto nla_put_failure; | |
1014 | } | |
1015 | ||
f8ff182c TG |
1016 | if (!(af_spec = nla_nest_start(skb, IFLA_AF_SPEC))) |
1017 | goto nla_put_failure; | |
1018 | ||
1019 | list_for_each_entry(af_ops, &rtnl_af_ops, list) { | |
1020 | if (af_ops->fill_link_af) { | |
1021 | struct nlattr *af; | |
1022 | int err; | |
1023 | ||
1024 | if (!(af = nla_nest_start(skb, af_ops->family))) | |
1025 | goto nla_put_failure; | |
1026 | ||
1027 | err = af_ops->fill_link_af(skb, dev); | |
1028 | ||
1029 | /* | |
1030 | * Caller may return ENODATA to indicate that there | |
1031 | * was no data to be dumped. This is not an error, it | |
1032 | * means we should trim the attribute header and | |
1033 | * continue. | |
1034 | */ | |
1035 | if (err == -ENODATA) | |
1036 | nla_nest_cancel(skb, af); | |
1037 | else if (err < 0) | |
1038 | goto nla_put_failure; | |
1039 | ||
1040 | nla_nest_end(skb, af); | |
1041 | } | |
1042 | } | |
1043 | ||
1044 | nla_nest_end(skb, af_spec); | |
1045 | ||
b60c5115 TG |
1046 | return nlmsg_end(skb, nlh); |
1047 | ||
1048 | nla_put_failure: | |
26932566 PM |
1049 | nlmsg_cancel(skb, nlh); |
1050 | return -EMSGSIZE; | |
1da177e4 LT |
1051 | } |
1052 | ||
b60c5115 | 1053 | static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb) |
1da177e4 | 1054 | { |
3b1e0a65 | 1055 | struct net *net = sock_net(skb->sk); |
7c28bd0b ED |
1056 | int h, s_h; |
1057 | int idx = 0, s_idx; | |
1da177e4 | 1058 | struct net_device *dev; |
7c28bd0b ED |
1059 | struct hlist_head *head; |
1060 | struct hlist_node *node; | |
115c9b81 GR |
1061 | struct nlattr *tb[IFLA_MAX+1]; |
1062 | u32 ext_filter_mask = 0; | |
7c28bd0b ED |
1063 | |
1064 | s_h = cb->args[0]; | |
1065 | s_idx = cb->args[1]; | |
1066 | ||
e67f88dd | 1067 | rcu_read_lock(); |
4e985ada TG |
1068 | cb->seq = net->dev_base_seq; |
1069 | ||
a4b64fbe ED |
1070 | if (nlmsg_parse(cb->nlh, sizeof(struct rtgenmsg), tb, IFLA_MAX, |
1071 | ifla_policy) >= 0) { | |
115c9b81 | 1072 | |
a4b64fbe ED |
1073 | if (tb[IFLA_EXT_MASK]) |
1074 | ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]); | |
1075 | } | |
115c9b81 | 1076 | |
7c28bd0b ED |
1077 | for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) { |
1078 | idx = 0; | |
1079 | head = &net->dev_index_head[h]; | |
e67f88dd | 1080 | hlist_for_each_entry_rcu(dev, node, head, index_hlist) { |
7c28bd0b ED |
1081 | if (idx < s_idx) |
1082 | goto cont; | |
1083 | if (rtnl_fill_ifinfo(skb, dev, RTM_NEWLINK, | |
15e47304 | 1084 | NETLINK_CB(cb->skb).portid, |
7c28bd0b | 1085 | cb->nlh->nlmsg_seq, 0, |
115c9b81 GR |
1086 | NLM_F_MULTI, |
1087 | ext_filter_mask) <= 0) | |
7c28bd0b | 1088 | goto out; |
4e985ada TG |
1089 | |
1090 | nl_dump_check_consistent(cb, nlmsg_hdr(skb)); | |
7562f876 | 1091 | cont: |
7c28bd0b ED |
1092 | idx++; |
1093 | } | |
1da177e4 | 1094 | } |
7c28bd0b | 1095 | out: |
e67f88dd | 1096 | rcu_read_unlock(); |
7c28bd0b ED |
1097 | cb->args[1] = idx; |
1098 | cb->args[0] = h; | |
1da177e4 LT |
1099 | |
1100 | return skb->len; | |
1101 | } | |
1102 | ||
e7199288 | 1103 | const struct nla_policy ifla_policy[IFLA_MAX+1] = { |
5176f91e | 1104 | [IFLA_IFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ-1 }, |
38f7b870 PM |
1105 | [IFLA_ADDRESS] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN }, |
1106 | [IFLA_BROADCAST] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN }, | |
5176f91e | 1107 | [IFLA_MAP] = { .len = sizeof(struct rtnl_link_ifmap) }, |
da5e0494 | 1108 | [IFLA_MTU] = { .type = NLA_U32 }, |
76e87306 | 1109 | [IFLA_LINK] = { .type = NLA_U32 }, |
fbaec0ea | 1110 | [IFLA_MASTER] = { .type = NLA_U32 }, |
da5e0494 TG |
1111 | [IFLA_TXQLEN] = { .type = NLA_U32 }, |
1112 | [IFLA_WEIGHT] = { .type = NLA_U32 }, | |
1113 | [IFLA_OPERSTATE] = { .type = NLA_U8 }, | |
1114 | [IFLA_LINKMODE] = { .type = NLA_U8 }, | |
76e87306 | 1115 | [IFLA_LINKINFO] = { .type = NLA_NESTED }, |
d8a5ec67 | 1116 | [IFLA_NET_NS_PID] = { .type = NLA_U32 }, |
f0630529 | 1117 | [IFLA_NET_NS_FD] = { .type = NLA_U32 }, |
0b815a1a | 1118 | [IFLA_IFALIAS] = { .type = NLA_STRING, .len = IFALIASZ-1 }, |
c02db8c6 | 1119 | [IFLA_VFINFO_LIST] = {. type = NLA_NESTED }, |
57b61080 SF |
1120 | [IFLA_VF_PORTS] = { .type = NLA_NESTED }, |
1121 | [IFLA_PORT_SELF] = { .type = NLA_NESTED }, | |
f8ff182c | 1122 | [IFLA_AF_SPEC] = { .type = NLA_NESTED }, |
115c9b81 | 1123 | [IFLA_EXT_MASK] = { .type = NLA_U32 }, |
edbc0bb3 | 1124 | [IFLA_PROMISCUITY] = { .type = NLA_U32 }, |
76ff5cc9 JP |
1125 | [IFLA_NUM_TX_QUEUES] = { .type = NLA_U32 }, |
1126 | [IFLA_NUM_RX_QUEUES] = { .type = NLA_U32 }, | |
da5e0494 | 1127 | }; |
e0d087af | 1128 | EXPORT_SYMBOL(ifla_policy); |
da5e0494 | 1129 | |
38f7b870 PM |
1130 | static const struct nla_policy ifla_info_policy[IFLA_INFO_MAX+1] = { |
1131 | [IFLA_INFO_KIND] = { .type = NLA_STRING }, | |
1132 | [IFLA_INFO_DATA] = { .type = NLA_NESTED }, | |
1133 | }; | |
1134 | ||
c02db8c6 CW |
1135 | static const struct nla_policy ifla_vfinfo_policy[IFLA_VF_INFO_MAX+1] = { |
1136 | [IFLA_VF_INFO] = { .type = NLA_NESTED }, | |
1137 | }; | |
1138 | ||
1139 | static const struct nla_policy ifla_vf_policy[IFLA_VF_MAX+1] = { | |
1140 | [IFLA_VF_MAC] = { .type = NLA_BINARY, | |
1141 | .len = sizeof(struct ifla_vf_mac) }, | |
1142 | [IFLA_VF_VLAN] = { .type = NLA_BINARY, | |
1143 | .len = sizeof(struct ifla_vf_vlan) }, | |
1144 | [IFLA_VF_TX_RATE] = { .type = NLA_BINARY, | |
1145 | .len = sizeof(struct ifla_vf_tx_rate) }, | |
48752f65 GR |
1146 | [IFLA_VF_SPOOFCHK] = { .type = NLA_BINARY, |
1147 | .len = sizeof(struct ifla_vf_spoofchk) }, | |
c02db8c6 CW |
1148 | }; |
1149 | ||
57b61080 SF |
1150 | static const struct nla_policy ifla_port_policy[IFLA_PORT_MAX+1] = { |
1151 | [IFLA_PORT_VF] = { .type = NLA_U32 }, | |
1152 | [IFLA_PORT_PROFILE] = { .type = NLA_STRING, | |
1153 | .len = PORT_PROFILE_MAX }, | |
1154 | [IFLA_PORT_VSI_TYPE] = { .type = NLA_BINARY, | |
1155 | .len = sizeof(struct ifla_port_vsi)}, | |
1156 | [IFLA_PORT_INSTANCE_UUID] = { .type = NLA_BINARY, | |
1157 | .len = PORT_UUID_MAX }, | |
1158 | [IFLA_PORT_HOST_UUID] = { .type = NLA_STRING, | |
1159 | .len = PORT_UUID_MAX }, | |
1160 | [IFLA_PORT_REQUEST] = { .type = NLA_U8, }, | |
1161 | [IFLA_PORT_RESPONSE] = { .type = NLA_U16, }, | |
1162 | }; | |
1163 | ||
81adee47 EB |
1164 | struct net *rtnl_link_get_net(struct net *src_net, struct nlattr *tb[]) |
1165 | { | |
1166 | struct net *net; | |
1167 | /* Examine the link attributes and figure out which | |
1168 | * network namespace we are talking about. | |
1169 | */ | |
1170 | if (tb[IFLA_NET_NS_PID]) | |
1171 | net = get_net_ns_by_pid(nla_get_u32(tb[IFLA_NET_NS_PID])); | |
f0630529 EB |
1172 | else if (tb[IFLA_NET_NS_FD]) |
1173 | net = get_net_ns_by_fd(nla_get_u32(tb[IFLA_NET_NS_FD])); | |
81adee47 EB |
1174 | else |
1175 | net = get_net(src_net); | |
1176 | return net; | |
1177 | } | |
1178 | EXPORT_SYMBOL(rtnl_link_get_net); | |
1179 | ||
1840bb13 TG |
1180 | static int validate_linkmsg(struct net_device *dev, struct nlattr *tb[]) |
1181 | { | |
1182 | if (dev) { | |
1183 | if (tb[IFLA_ADDRESS] && | |
1184 | nla_len(tb[IFLA_ADDRESS]) < dev->addr_len) | |
1185 | return -EINVAL; | |
1186 | ||
1187 | if (tb[IFLA_BROADCAST] && | |
1188 | nla_len(tb[IFLA_BROADCAST]) < dev->addr_len) | |
1189 | return -EINVAL; | |
1190 | } | |
1191 | ||
cf7afbfe TG |
1192 | if (tb[IFLA_AF_SPEC]) { |
1193 | struct nlattr *af; | |
1194 | int rem, err; | |
1195 | ||
1196 | nla_for_each_nested(af, tb[IFLA_AF_SPEC], rem) { | |
1197 | const struct rtnl_af_ops *af_ops; | |
1198 | ||
1199 | if (!(af_ops = rtnl_af_lookup(nla_type(af)))) | |
1200 | return -EAFNOSUPPORT; | |
1201 | ||
1202 | if (!af_ops->set_link_af) | |
1203 | return -EOPNOTSUPP; | |
1204 | ||
1205 | if (af_ops->validate_link_af) { | |
6d3a9a68 | 1206 | err = af_ops->validate_link_af(dev, af); |
cf7afbfe TG |
1207 | if (err < 0) |
1208 | return err; | |
1209 | } | |
1210 | } | |
1211 | } | |
1212 | ||
1840bb13 TG |
1213 | return 0; |
1214 | } | |
1215 | ||
c02db8c6 CW |
1216 | static int do_setvfinfo(struct net_device *dev, struct nlattr *attr) |
1217 | { | |
1218 | int rem, err = -EINVAL; | |
1219 | struct nlattr *vf; | |
1220 | const struct net_device_ops *ops = dev->netdev_ops; | |
1221 | ||
1222 | nla_for_each_nested(vf, attr, rem) { | |
1223 | switch (nla_type(vf)) { | |
1224 | case IFLA_VF_MAC: { | |
1225 | struct ifla_vf_mac *ivm; | |
1226 | ivm = nla_data(vf); | |
1227 | err = -EOPNOTSUPP; | |
1228 | if (ops->ndo_set_vf_mac) | |
1229 | err = ops->ndo_set_vf_mac(dev, ivm->vf, | |
1230 | ivm->mac); | |
1231 | break; | |
1232 | } | |
1233 | case IFLA_VF_VLAN: { | |
1234 | struct ifla_vf_vlan *ivv; | |
1235 | ivv = nla_data(vf); | |
1236 | err = -EOPNOTSUPP; | |
1237 | if (ops->ndo_set_vf_vlan) | |
1238 | err = ops->ndo_set_vf_vlan(dev, ivv->vf, | |
1239 | ivv->vlan, | |
1240 | ivv->qos); | |
1241 | break; | |
1242 | } | |
1243 | case IFLA_VF_TX_RATE: { | |
1244 | struct ifla_vf_tx_rate *ivt; | |
1245 | ivt = nla_data(vf); | |
1246 | err = -EOPNOTSUPP; | |
1247 | if (ops->ndo_set_vf_tx_rate) | |
1248 | err = ops->ndo_set_vf_tx_rate(dev, ivt->vf, | |
1249 | ivt->rate); | |
1250 | break; | |
1251 | } | |
5f8444a3 GR |
1252 | case IFLA_VF_SPOOFCHK: { |
1253 | struct ifla_vf_spoofchk *ivs; | |
1254 | ivs = nla_data(vf); | |
1255 | err = -EOPNOTSUPP; | |
1256 | if (ops->ndo_set_vf_spoofchk) | |
1257 | err = ops->ndo_set_vf_spoofchk(dev, ivs->vf, | |
1258 | ivs->setting); | |
1259 | break; | |
1260 | } | |
c02db8c6 CW |
1261 | default: |
1262 | err = -EINVAL; | |
1263 | break; | |
1264 | } | |
1265 | if (err) | |
1266 | break; | |
1267 | } | |
1268 | return err; | |
1269 | } | |
1270 | ||
fbaec0ea JP |
1271 | static int do_set_master(struct net_device *dev, int ifindex) |
1272 | { | |
1273 | struct net_device *master_dev; | |
1274 | const struct net_device_ops *ops; | |
1275 | int err; | |
1276 | ||
1277 | if (dev->master) { | |
1278 | if (dev->master->ifindex == ifindex) | |
1279 | return 0; | |
1280 | ops = dev->master->netdev_ops; | |
1281 | if (ops->ndo_del_slave) { | |
1282 | err = ops->ndo_del_slave(dev->master, dev); | |
1283 | if (err) | |
1284 | return err; | |
1285 | } else { | |
1286 | return -EOPNOTSUPP; | |
1287 | } | |
1288 | } | |
1289 | ||
1290 | if (ifindex) { | |
1291 | master_dev = __dev_get_by_index(dev_net(dev), ifindex); | |
1292 | if (!master_dev) | |
1293 | return -EINVAL; | |
1294 | ops = master_dev->netdev_ops; | |
1295 | if (ops->ndo_add_slave) { | |
1296 | err = ops->ndo_add_slave(master_dev, dev); | |
1297 | if (err) | |
1298 | return err; | |
1299 | } else { | |
1300 | return -EOPNOTSUPP; | |
1301 | } | |
1302 | } | |
1303 | return 0; | |
1304 | } | |
1305 | ||
0157f60c | 1306 | static int do_setlink(struct net_device *dev, struct ifinfomsg *ifm, |
38f7b870 | 1307 | struct nlattr **tb, char *ifname, int modified) |
1da177e4 | 1308 | { |
d314774c | 1309 | const struct net_device_ops *ops = dev->netdev_ops; |
38f7b870 | 1310 | int send_addr_notify = 0; |
0157f60c | 1311 | int err; |
1da177e4 | 1312 | |
f0630529 | 1313 | if (tb[IFLA_NET_NS_PID] || tb[IFLA_NET_NS_FD]) { |
81adee47 | 1314 | struct net *net = rtnl_link_get_net(dev_net(dev), tb); |
d8a5ec67 EB |
1315 | if (IS_ERR(net)) { |
1316 | err = PTR_ERR(net); | |
1317 | goto errout; | |
1318 | } | |
1319 | err = dev_change_net_namespace(dev, net, ifname); | |
1320 | put_net(net); | |
1321 | if (err) | |
1322 | goto errout; | |
1323 | modified = 1; | |
1324 | } | |
1325 | ||
da5e0494 | 1326 | if (tb[IFLA_MAP]) { |
1da177e4 LT |
1327 | struct rtnl_link_ifmap *u_map; |
1328 | struct ifmap k_map; | |
1329 | ||
d314774c | 1330 | if (!ops->ndo_set_config) { |
1da177e4 | 1331 | err = -EOPNOTSUPP; |
0157f60c | 1332 | goto errout; |
1da177e4 LT |
1333 | } |
1334 | ||
1335 | if (!netif_device_present(dev)) { | |
1336 | err = -ENODEV; | |
0157f60c | 1337 | goto errout; |
1da177e4 | 1338 | } |
1da177e4 | 1339 | |
da5e0494 | 1340 | u_map = nla_data(tb[IFLA_MAP]); |
1da177e4 LT |
1341 | k_map.mem_start = (unsigned long) u_map->mem_start; |
1342 | k_map.mem_end = (unsigned long) u_map->mem_end; | |
1343 | k_map.base_addr = (unsigned short) u_map->base_addr; | |
1344 | k_map.irq = (unsigned char) u_map->irq; | |
1345 | k_map.dma = (unsigned char) u_map->dma; | |
1346 | k_map.port = (unsigned char) u_map->port; | |
1347 | ||
d314774c | 1348 | err = ops->ndo_set_config(dev, &k_map); |
da5e0494 | 1349 | if (err < 0) |
0157f60c | 1350 | goto errout; |
1da177e4 | 1351 | |
da5e0494 | 1352 | modified = 1; |
1da177e4 LT |
1353 | } |
1354 | ||
da5e0494 | 1355 | if (tb[IFLA_ADDRESS]) { |
70f8e78e DM |
1356 | struct sockaddr *sa; |
1357 | int len; | |
1358 | ||
d314774c | 1359 | if (!ops->ndo_set_mac_address) { |
1da177e4 | 1360 | err = -EOPNOTSUPP; |
0157f60c | 1361 | goto errout; |
1da177e4 | 1362 | } |
da5e0494 | 1363 | |
1da177e4 LT |
1364 | if (!netif_device_present(dev)) { |
1365 | err = -ENODEV; | |
0157f60c | 1366 | goto errout; |
1da177e4 | 1367 | } |
1da177e4 | 1368 | |
70f8e78e DM |
1369 | len = sizeof(sa_family_t) + dev->addr_len; |
1370 | sa = kmalloc(len, GFP_KERNEL); | |
1371 | if (!sa) { | |
1372 | err = -ENOMEM; | |
0157f60c | 1373 | goto errout; |
70f8e78e DM |
1374 | } |
1375 | sa->sa_family = dev->type; | |
da5e0494 | 1376 | memcpy(sa->sa_data, nla_data(tb[IFLA_ADDRESS]), |
70f8e78e | 1377 | dev->addr_len); |
d314774c | 1378 | err = ops->ndo_set_mac_address(dev, sa); |
70f8e78e | 1379 | kfree(sa); |
1da177e4 | 1380 | if (err) |
0157f60c | 1381 | goto errout; |
1da177e4 | 1382 | send_addr_notify = 1; |
da5e0494 | 1383 | modified = 1; |
7bf23575 | 1384 | add_device_randomness(dev->dev_addr, dev->addr_len); |
1da177e4 LT |
1385 | } |
1386 | ||
da5e0494 TG |
1387 | if (tb[IFLA_MTU]) { |
1388 | err = dev_set_mtu(dev, nla_get_u32(tb[IFLA_MTU])); | |
1389 | if (err < 0) | |
0157f60c | 1390 | goto errout; |
da5e0494 | 1391 | modified = 1; |
1da177e4 LT |
1392 | } |
1393 | ||
cbda10fa VD |
1394 | if (tb[IFLA_GROUP]) { |
1395 | dev_set_group(dev, nla_get_u32(tb[IFLA_GROUP])); | |
1396 | modified = 1; | |
1397 | } | |
1398 | ||
da5e0494 TG |
1399 | /* |
1400 | * Interface selected by interface index but interface | |
1401 | * name provided implies that a name change has been | |
1402 | * requested. | |
1403 | */ | |
51055be8 | 1404 | if (ifm->ifi_index > 0 && ifname[0]) { |
da5e0494 TG |
1405 | err = dev_change_name(dev, ifname); |
1406 | if (err < 0) | |
0157f60c | 1407 | goto errout; |
da5e0494 | 1408 | modified = 1; |
1da177e4 LT |
1409 | } |
1410 | ||
0b815a1a SH |
1411 | if (tb[IFLA_IFALIAS]) { |
1412 | err = dev_set_alias(dev, nla_data(tb[IFLA_IFALIAS]), | |
1413 | nla_len(tb[IFLA_IFALIAS])); | |
1414 | if (err < 0) | |
1415 | goto errout; | |
1416 | modified = 1; | |
1417 | } | |
1418 | ||
da5e0494 TG |
1419 | if (tb[IFLA_BROADCAST]) { |
1420 | nla_memcpy(dev->broadcast, tb[IFLA_BROADCAST], dev->addr_len); | |
1421 | send_addr_notify = 1; | |
1da177e4 LT |
1422 | } |
1423 | ||
83b496e9 | 1424 | if (ifm->ifi_flags || ifm->ifi_change) { |
3729d502 | 1425 | err = dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm)); |
5f9021cf JB |
1426 | if (err < 0) |
1427 | goto errout; | |
83b496e9 | 1428 | } |
1da177e4 | 1429 | |
fbaec0ea JP |
1430 | if (tb[IFLA_MASTER]) { |
1431 | err = do_set_master(dev, nla_get_u32(tb[IFLA_MASTER])); | |
1432 | if (err) | |
1433 | goto errout; | |
1434 | modified = 1; | |
1435 | } | |
1436 | ||
93b2d4a2 DM |
1437 | if (tb[IFLA_TXQLEN]) |
1438 | dev->tx_queue_len = nla_get_u32(tb[IFLA_TXQLEN]); | |
b00055aa | 1439 | |
da5e0494 | 1440 | if (tb[IFLA_OPERSTATE]) |
93b2d4a2 | 1441 | set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE])); |
b00055aa | 1442 | |
da5e0494 | 1443 | if (tb[IFLA_LINKMODE]) { |
93b2d4a2 DM |
1444 | write_lock_bh(&dev_base_lock); |
1445 | dev->link_mode = nla_get_u8(tb[IFLA_LINKMODE]); | |
1446 | write_unlock_bh(&dev_base_lock); | |
b00055aa SR |
1447 | } |
1448 | ||
c02db8c6 CW |
1449 | if (tb[IFLA_VFINFO_LIST]) { |
1450 | struct nlattr *attr; | |
1451 | int rem; | |
1452 | nla_for_each_nested(attr, tb[IFLA_VFINFO_LIST], rem) { | |
253683bb DH |
1453 | if (nla_type(attr) != IFLA_VF_INFO) { |
1454 | err = -EINVAL; | |
c02db8c6 | 1455 | goto errout; |
253683bb | 1456 | } |
c02db8c6 CW |
1457 | err = do_setvfinfo(dev, attr); |
1458 | if (err < 0) | |
1459 | goto errout; | |
1460 | modified = 1; | |
1461 | } | |
ebc08a6f | 1462 | } |
1da177e4 LT |
1463 | err = 0; |
1464 | ||
57b61080 SF |
1465 | if (tb[IFLA_VF_PORTS]) { |
1466 | struct nlattr *port[IFLA_PORT_MAX+1]; | |
1467 | struct nlattr *attr; | |
1468 | int vf; | |
1469 | int rem; | |
1470 | ||
1471 | err = -EOPNOTSUPP; | |
1472 | if (!ops->ndo_set_vf_port) | |
1473 | goto errout; | |
1474 | ||
1475 | nla_for_each_nested(attr, tb[IFLA_VF_PORTS], rem) { | |
1476 | if (nla_type(attr) != IFLA_VF_PORT) | |
1477 | continue; | |
1478 | err = nla_parse_nested(port, IFLA_PORT_MAX, | |
1479 | attr, ifla_port_policy); | |
1480 | if (err < 0) | |
1481 | goto errout; | |
1482 | if (!port[IFLA_PORT_VF]) { | |
1483 | err = -EOPNOTSUPP; | |
1484 | goto errout; | |
1485 | } | |
1486 | vf = nla_get_u32(port[IFLA_PORT_VF]); | |
1487 | err = ops->ndo_set_vf_port(dev, vf, port); | |
1488 | if (err < 0) | |
1489 | goto errout; | |
1490 | modified = 1; | |
1491 | } | |
1492 | } | |
1493 | err = 0; | |
1494 | ||
1495 | if (tb[IFLA_PORT_SELF]) { | |
1496 | struct nlattr *port[IFLA_PORT_MAX+1]; | |
1497 | ||
1498 | err = nla_parse_nested(port, IFLA_PORT_MAX, | |
1499 | tb[IFLA_PORT_SELF], ifla_port_policy); | |
1500 | if (err < 0) | |
1501 | goto errout; | |
1502 | ||
1503 | err = -EOPNOTSUPP; | |
1504 | if (ops->ndo_set_vf_port) | |
1505 | err = ops->ndo_set_vf_port(dev, PORT_SELF_VF, port); | |
1506 | if (err < 0) | |
1507 | goto errout; | |
1508 | modified = 1; | |
1509 | } | |
f8ff182c TG |
1510 | |
1511 | if (tb[IFLA_AF_SPEC]) { | |
1512 | struct nlattr *af; | |
1513 | int rem; | |
1514 | ||
1515 | nla_for_each_nested(af, tb[IFLA_AF_SPEC], rem) { | |
1516 | const struct rtnl_af_ops *af_ops; | |
1517 | ||
1518 | if (!(af_ops = rtnl_af_lookup(nla_type(af)))) | |
cf7afbfe | 1519 | BUG(); |
f8ff182c | 1520 | |
cf7afbfe | 1521 | err = af_ops->set_link_af(dev, af); |
f8ff182c TG |
1522 | if (err < 0) |
1523 | goto errout; | |
1524 | ||
1525 | modified = 1; | |
1526 | } | |
1527 | } | |
57b61080 SF |
1528 | err = 0; |
1529 | ||
0157f60c | 1530 | errout: |
e87cc472 JP |
1531 | if (err < 0 && modified) |
1532 | 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", | |
1533 | dev->name); | |
da5e0494 | 1534 | |
1da177e4 LT |
1535 | if (send_addr_notify) |
1536 | call_netdevice_notifiers(NETDEV_CHANGEADDR, dev); | |
f18da145 | 1537 | |
0157f60c PM |
1538 | return err; |
1539 | } | |
1da177e4 | 1540 | |
0157f60c PM |
1541 | static int rtnl_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) |
1542 | { | |
3b1e0a65 | 1543 | struct net *net = sock_net(skb->sk); |
0157f60c PM |
1544 | struct ifinfomsg *ifm; |
1545 | struct net_device *dev; | |
1546 | int err; | |
1547 | struct nlattr *tb[IFLA_MAX+1]; | |
1548 | char ifname[IFNAMSIZ]; | |
1549 | ||
1550 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); | |
1551 | if (err < 0) | |
1552 | goto errout; | |
1553 | ||
1554 | if (tb[IFLA_IFNAME]) | |
1555 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
1556 | else | |
1557 | ifname[0] = '\0'; | |
1558 | ||
1559 | err = -EINVAL; | |
1560 | ifm = nlmsg_data(nlh); | |
1561 | if (ifm->ifi_index > 0) | |
a3d12891 | 1562 | dev = __dev_get_by_index(net, ifm->ifi_index); |
0157f60c | 1563 | else if (tb[IFLA_IFNAME]) |
a3d12891 | 1564 | dev = __dev_get_by_name(net, ifname); |
0157f60c PM |
1565 | else |
1566 | goto errout; | |
1567 | ||
1568 | if (dev == NULL) { | |
1569 | err = -ENODEV; | |
1570 | goto errout; | |
1571 | } | |
1572 | ||
e0d087af ED |
1573 | err = validate_linkmsg(dev, tb); |
1574 | if (err < 0) | |
a3d12891 | 1575 | goto errout; |
0157f60c | 1576 | |
38f7b870 | 1577 | err = do_setlink(dev, ifm, tb, ifname, 0); |
da5e0494 | 1578 | errout: |
1da177e4 LT |
1579 | return err; |
1580 | } | |
1581 | ||
38f7b870 PM |
1582 | static int rtnl_dellink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) |
1583 | { | |
3b1e0a65 | 1584 | struct net *net = sock_net(skb->sk); |
38f7b870 PM |
1585 | const struct rtnl_link_ops *ops; |
1586 | struct net_device *dev; | |
1587 | struct ifinfomsg *ifm; | |
1588 | char ifname[IFNAMSIZ]; | |
1589 | struct nlattr *tb[IFLA_MAX+1]; | |
1590 | int err; | |
226bd341 | 1591 | LIST_HEAD(list_kill); |
38f7b870 PM |
1592 | |
1593 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); | |
1594 | if (err < 0) | |
1595 | return err; | |
1596 | ||
1597 | if (tb[IFLA_IFNAME]) | |
1598 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
1599 | ||
1600 | ifm = nlmsg_data(nlh); | |
1601 | if (ifm->ifi_index > 0) | |
881d966b | 1602 | dev = __dev_get_by_index(net, ifm->ifi_index); |
38f7b870 | 1603 | else if (tb[IFLA_IFNAME]) |
881d966b | 1604 | dev = __dev_get_by_name(net, ifname); |
38f7b870 PM |
1605 | else |
1606 | return -EINVAL; | |
1607 | ||
1608 | if (!dev) | |
1609 | return -ENODEV; | |
1610 | ||
1611 | ops = dev->rtnl_link_ops; | |
1612 | if (!ops) | |
1613 | return -EOPNOTSUPP; | |
1614 | ||
226bd341 ED |
1615 | ops->dellink(dev, &list_kill); |
1616 | unregister_netdevice_many(&list_kill); | |
1617 | list_del(&list_kill); | |
38f7b870 PM |
1618 | return 0; |
1619 | } | |
1620 | ||
3729d502 PM |
1621 | int rtnl_configure_link(struct net_device *dev, const struct ifinfomsg *ifm) |
1622 | { | |
1623 | unsigned int old_flags; | |
1624 | int err; | |
1625 | ||
1626 | old_flags = dev->flags; | |
1627 | if (ifm && (ifm->ifi_flags || ifm->ifi_change)) { | |
1628 | err = __dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm)); | |
1629 | if (err < 0) | |
1630 | return err; | |
1631 | } | |
1632 | ||
1633 | dev->rtnl_link_state = RTNL_LINK_INITIALIZED; | |
1634 | rtmsg_ifinfo(RTM_NEWLINK, dev, ~0U); | |
1635 | ||
1636 | __dev_notify_flags(dev, old_flags); | |
1637 | return 0; | |
1638 | } | |
1639 | EXPORT_SYMBOL(rtnl_configure_link); | |
1640 | ||
81adee47 EB |
1641 | struct net_device *rtnl_create_link(struct net *src_net, struct net *net, |
1642 | char *ifname, const struct rtnl_link_ops *ops, struct nlattr *tb[]) | |
e7199288 PE |
1643 | { |
1644 | int err; | |
1645 | struct net_device *dev; | |
d40156aa JP |
1646 | unsigned int num_tx_queues = 1; |
1647 | unsigned int num_rx_queues = 1; | |
e7199288 | 1648 | |
76ff5cc9 JP |
1649 | if (tb[IFLA_NUM_TX_QUEUES]) |
1650 | num_tx_queues = nla_get_u32(tb[IFLA_NUM_TX_QUEUES]); | |
1651 | else if (ops->get_num_tx_queues) | |
d40156aa | 1652 | num_tx_queues = ops->get_num_tx_queues(); |
76ff5cc9 JP |
1653 | |
1654 | if (tb[IFLA_NUM_RX_QUEUES]) | |
1655 | num_rx_queues = nla_get_u32(tb[IFLA_NUM_RX_QUEUES]); | |
1656 | else if (ops->get_num_rx_queues) | |
d40156aa | 1657 | num_rx_queues = ops->get_num_rx_queues(); |
efacb309 | 1658 | |
e7199288 | 1659 | err = -ENOMEM; |
d40156aa JP |
1660 | dev = alloc_netdev_mqs(ops->priv_size, ifname, ops->setup, |
1661 | num_tx_queues, num_rx_queues); | |
e7199288 PE |
1662 | if (!dev) |
1663 | goto err; | |
1664 | ||
81adee47 EB |
1665 | dev_net_set(dev, net); |
1666 | dev->rtnl_link_ops = ops; | |
3729d502 | 1667 | dev->rtnl_link_state = RTNL_LINK_INITIALIZING; |
81adee47 | 1668 | |
e7199288 PE |
1669 | if (tb[IFLA_MTU]) |
1670 | dev->mtu = nla_get_u32(tb[IFLA_MTU]); | |
1671 | if (tb[IFLA_ADDRESS]) | |
1672 | memcpy(dev->dev_addr, nla_data(tb[IFLA_ADDRESS]), | |
1673 | nla_len(tb[IFLA_ADDRESS])); | |
1674 | if (tb[IFLA_BROADCAST]) | |
1675 | memcpy(dev->broadcast, nla_data(tb[IFLA_BROADCAST]), | |
1676 | nla_len(tb[IFLA_BROADCAST])); | |
1677 | if (tb[IFLA_TXQLEN]) | |
1678 | dev->tx_queue_len = nla_get_u32(tb[IFLA_TXQLEN]); | |
1679 | if (tb[IFLA_OPERSTATE]) | |
93b2d4a2 | 1680 | set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE])); |
e7199288 PE |
1681 | if (tb[IFLA_LINKMODE]) |
1682 | dev->link_mode = nla_get_u8(tb[IFLA_LINKMODE]); | |
ffa934f1 PM |
1683 | if (tb[IFLA_GROUP]) |
1684 | dev_set_group(dev, nla_get_u32(tb[IFLA_GROUP])); | |
e7199288 PE |
1685 | |
1686 | return dev; | |
1687 | ||
e7199288 PE |
1688 | err: |
1689 | return ERR_PTR(err); | |
1690 | } | |
e0d087af | 1691 | EXPORT_SYMBOL(rtnl_create_link); |
e7199288 | 1692 | |
e7ed828f VD |
1693 | static int rtnl_group_changelink(struct net *net, int group, |
1694 | struct ifinfomsg *ifm, | |
1695 | struct nlattr **tb) | |
1696 | { | |
1697 | struct net_device *dev; | |
1698 | int err; | |
1699 | ||
1700 | for_each_netdev(net, dev) { | |
1701 | if (dev->group == group) { | |
1702 | err = do_setlink(dev, ifm, tb, NULL, 0); | |
1703 | if (err < 0) | |
1704 | return err; | |
1705 | } | |
1706 | } | |
1707 | ||
1708 | return 0; | |
1709 | } | |
1710 | ||
38f7b870 PM |
1711 | static int rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) |
1712 | { | |
3b1e0a65 | 1713 | struct net *net = sock_net(skb->sk); |
38f7b870 PM |
1714 | const struct rtnl_link_ops *ops; |
1715 | struct net_device *dev; | |
1716 | struct ifinfomsg *ifm; | |
1717 | char kind[MODULE_NAME_LEN]; | |
1718 | char ifname[IFNAMSIZ]; | |
1719 | struct nlattr *tb[IFLA_MAX+1]; | |
1720 | struct nlattr *linkinfo[IFLA_INFO_MAX+1]; | |
1721 | int err; | |
1722 | ||
95a5afca | 1723 | #ifdef CONFIG_MODULES |
38f7b870 | 1724 | replay: |
8072f085 | 1725 | #endif |
38f7b870 PM |
1726 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); |
1727 | if (err < 0) | |
1728 | return err; | |
1729 | ||
1730 | if (tb[IFLA_IFNAME]) | |
1731 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
1732 | else | |
1733 | ifname[0] = '\0'; | |
1734 | ||
1735 | ifm = nlmsg_data(nlh); | |
1736 | if (ifm->ifi_index > 0) | |
881d966b | 1737 | dev = __dev_get_by_index(net, ifm->ifi_index); |
e7ed828f VD |
1738 | else { |
1739 | if (ifname[0]) | |
1740 | dev = __dev_get_by_name(net, ifname); | |
e7ed828f VD |
1741 | else |
1742 | dev = NULL; | |
1743 | } | |
38f7b870 | 1744 | |
e0d087af ED |
1745 | err = validate_linkmsg(dev, tb); |
1746 | if (err < 0) | |
1840bb13 TG |
1747 | return err; |
1748 | ||
38f7b870 PM |
1749 | if (tb[IFLA_LINKINFO]) { |
1750 | err = nla_parse_nested(linkinfo, IFLA_INFO_MAX, | |
1751 | tb[IFLA_LINKINFO], ifla_info_policy); | |
1752 | if (err < 0) | |
1753 | return err; | |
1754 | } else | |
1755 | memset(linkinfo, 0, sizeof(linkinfo)); | |
1756 | ||
1757 | if (linkinfo[IFLA_INFO_KIND]) { | |
1758 | nla_strlcpy(kind, linkinfo[IFLA_INFO_KIND], sizeof(kind)); | |
1759 | ops = rtnl_link_ops_get(kind); | |
1760 | } else { | |
1761 | kind[0] = '\0'; | |
1762 | ops = NULL; | |
1763 | } | |
1764 | ||
1765 | if (1) { | |
1766 | struct nlattr *attr[ops ? ops->maxtype + 1 : 0], **data = NULL; | |
81adee47 | 1767 | struct net *dest_net; |
38f7b870 PM |
1768 | |
1769 | if (ops) { | |
1770 | if (ops->maxtype && linkinfo[IFLA_INFO_DATA]) { | |
1771 | err = nla_parse_nested(attr, ops->maxtype, | |
1772 | linkinfo[IFLA_INFO_DATA], | |
1773 | ops->policy); | |
1774 | if (err < 0) | |
1775 | return err; | |
1776 | data = attr; | |
1777 | } | |
1778 | if (ops->validate) { | |
1779 | err = ops->validate(tb, data); | |
1780 | if (err < 0) | |
1781 | return err; | |
1782 | } | |
1783 | } | |
1784 | ||
1785 | if (dev) { | |
1786 | int modified = 0; | |
1787 | ||
1788 | if (nlh->nlmsg_flags & NLM_F_EXCL) | |
1789 | return -EEXIST; | |
1790 | if (nlh->nlmsg_flags & NLM_F_REPLACE) | |
1791 | return -EOPNOTSUPP; | |
1792 | ||
1793 | if (linkinfo[IFLA_INFO_DATA]) { | |
1794 | if (!ops || ops != dev->rtnl_link_ops || | |
1795 | !ops->changelink) | |
1796 | return -EOPNOTSUPP; | |
1797 | ||
1798 | err = ops->changelink(dev, tb, data); | |
1799 | if (err < 0) | |
1800 | return err; | |
1801 | modified = 1; | |
1802 | } | |
1803 | ||
1804 | return do_setlink(dev, ifm, tb, ifname, modified); | |
1805 | } | |
1806 | ||
ffa934f1 PM |
1807 | if (!(nlh->nlmsg_flags & NLM_F_CREATE)) { |
1808 | if (ifm->ifi_index == 0 && tb[IFLA_GROUP]) | |
1809 | return rtnl_group_changelink(net, | |
1810 | nla_get_u32(tb[IFLA_GROUP]), | |
1811 | ifm, tb); | |
38f7b870 | 1812 | return -ENODEV; |
ffa934f1 | 1813 | } |
38f7b870 | 1814 | |
0e06877c | 1815 | if (tb[IFLA_MAP] || tb[IFLA_MASTER] || tb[IFLA_PROTINFO]) |
38f7b870 PM |
1816 | return -EOPNOTSUPP; |
1817 | ||
1818 | if (!ops) { | |
95a5afca | 1819 | #ifdef CONFIG_MODULES |
38f7b870 PM |
1820 | if (kind[0]) { |
1821 | __rtnl_unlock(); | |
1822 | request_module("rtnl-link-%s", kind); | |
1823 | rtnl_lock(); | |
1824 | ops = rtnl_link_ops_get(kind); | |
1825 | if (ops) | |
1826 | goto replay; | |
1827 | } | |
1828 | #endif | |
1829 | return -EOPNOTSUPP; | |
1830 | } | |
1831 | ||
1832 | if (!ifname[0]) | |
1833 | snprintf(ifname, IFNAMSIZ, "%s%%d", ops->kind); | |
e7199288 | 1834 | |
81adee47 | 1835 | dest_net = rtnl_link_get_net(net, tb); |
13ad1774 EB |
1836 | if (IS_ERR(dest_net)) |
1837 | return PTR_ERR(dest_net); | |
1838 | ||
81adee47 | 1839 | dev = rtnl_create_link(net, dest_net, ifname, ops, tb); |
9c7dafbf | 1840 | if (IS_ERR(dev)) { |
e7199288 | 1841 | err = PTR_ERR(dev); |
9c7dafbf PE |
1842 | goto out; |
1843 | } | |
1844 | ||
1845 | dev->ifindex = ifm->ifi_index; | |
1846 | ||
1847 | if (ops->newlink) | |
81adee47 | 1848 | err = ops->newlink(net, dev, tb, data); |
2d85cba2 PM |
1849 | else |
1850 | err = register_netdevice(dev); | |
80032cff DC |
1851 | |
1852 | if (err < 0 && !IS_ERR(dev)) | |
38f7b870 | 1853 | free_netdev(dev); |
80032cff | 1854 | if (err < 0) |
3729d502 | 1855 | goto out; |
81adee47 | 1856 | |
3729d502 PM |
1857 | err = rtnl_configure_link(dev, ifm); |
1858 | if (err < 0) | |
1859 | unregister_netdevice(dev); | |
1860 | out: | |
81adee47 | 1861 | put_net(dest_net); |
38f7b870 PM |
1862 | return err; |
1863 | } | |
1864 | } | |
1865 | ||
b60c5115 | 1866 | static int rtnl_getlink(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg) |
711e2c33 | 1867 | { |
3b1e0a65 | 1868 | struct net *net = sock_net(skb->sk); |
b60c5115 | 1869 | struct ifinfomsg *ifm; |
a3d12891 | 1870 | char ifname[IFNAMSIZ]; |
b60c5115 TG |
1871 | struct nlattr *tb[IFLA_MAX+1]; |
1872 | struct net_device *dev = NULL; | |
1873 | struct sk_buff *nskb; | |
339bf98f | 1874 | int err; |
115c9b81 | 1875 | u32 ext_filter_mask = 0; |
711e2c33 | 1876 | |
b60c5115 TG |
1877 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); |
1878 | if (err < 0) | |
9918f230 | 1879 | return err; |
b60c5115 | 1880 | |
a3d12891 ED |
1881 | if (tb[IFLA_IFNAME]) |
1882 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
1883 | ||
115c9b81 GR |
1884 | if (tb[IFLA_EXT_MASK]) |
1885 | ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]); | |
1886 | ||
b60c5115 | 1887 | ifm = nlmsg_data(nlh); |
a3d12891 ED |
1888 | if (ifm->ifi_index > 0) |
1889 | dev = __dev_get_by_index(net, ifm->ifi_index); | |
1890 | else if (tb[IFLA_IFNAME]) | |
1891 | dev = __dev_get_by_name(net, ifname); | |
1892 | else | |
711e2c33 | 1893 | return -EINVAL; |
711e2c33 | 1894 | |
a3d12891 ED |
1895 | if (dev == NULL) |
1896 | return -ENODEV; | |
1897 | ||
115c9b81 | 1898 | nskb = nlmsg_new(if_nlmsg_size(dev, ext_filter_mask), GFP_KERNEL); |
a3d12891 ED |
1899 | if (nskb == NULL) |
1900 | return -ENOBUFS; | |
b60c5115 | 1901 | |
15e47304 | 1902 | err = rtnl_fill_ifinfo(nskb, dev, RTM_NEWLINK, NETLINK_CB(skb).portid, |
115c9b81 | 1903 | nlh->nlmsg_seq, 0, 0, ext_filter_mask); |
26932566 PM |
1904 | if (err < 0) { |
1905 | /* -EMSGSIZE implies BUG in if_nlmsg_size */ | |
1906 | WARN_ON(err == -EMSGSIZE); | |
1907 | kfree_skb(nskb); | |
a3d12891 | 1908 | } else |
15e47304 | 1909 | err = rtnl_unicast(nskb, net, NETLINK_CB(skb).portid); |
711e2c33 | 1910 | |
b60c5115 | 1911 | return err; |
711e2c33 | 1912 | } |
711e2c33 | 1913 | |
115c9b81 | 1914 | static u16 rtnl_calcit(struct sk_buff *skb, struct nlmsghdr *nlh) |
c7ac8679 | 1915 | { |
115c9b81 GR |
1916 | struct net *net = sock_net(skb->sk); |
1917 | struct net_device *dev; | |
1918 | struct nlattr *tb[IFLA_MAX+1]; | |
1919 | u32 ext_filter_mask = 0; | |
1920 | u16 min_ifinfo_dump_size = 0; | |
1921 | ||
a4b64fbe ED |
1922 | if (nlmsg_parse(nlh, sizeof(struct rtgenmsg), tb, IFLA_MAX, |
1923 | ifla_policy) >= 0) { | |
1924 | if (tb[IFLA_EXT_MASK]) | |
1925 | ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]); | |
1926 | } | |
115c9b81 GR |
1927 | |
1928 | if (!ext_filter_mask) | |
1929 | return NLMSG_GOODSIZE; | |
1930 | /* | |
1931 | * traverse the list of net devices and compute the minimum | |
1932 | * buffer size based upon the filter mask. | |
1933 | */ | |
1934 | list_for_each_entry(dev, &net->dev_base_head, dev_list) { | |
1935 | min_ifinfo_dump_size = max_t(u16, min_ifinfo_dump_size, | |
1936 | if_nlmsg_size(dev, | |
1937 | ext_filter_mask)); | |
1938 | } | |
1939 | ||
c7ac8679 GR |
1940 | return min_ifinfo_dump_size; |
1941 | } | |
1942 | ||
42bad1da | 1943 | static int rtnl_dump_all(struct sk_buff *skb, struct netlink_callback *cb) |
1da177e4 LT |
1944 | { |
1945 | int idx; | |
1946 | int s_idx = cb->family; | |
1947 | ||
1948 | if (s_idx == 0) | |
1949 | s_idx = 1; | |
25239cee | 1950 | for (idx = 1; idx <= RTNL_FAMILY_MAX; idx++) { |
1da177e4 LT |
1951 | int type = cb->nlh->nlmsg_type-RTM_BASE; |
1952 | if (idx < s_idx || idx == PF_PACKET) | |
1953 | continue; | |
e2849863 TG |
1954 | if (rtnl_msg_handlers[idx] == NULL || |
1955 | rtnl_msg_handlers[idx][type].dumpit == NULL) | |
1da177e4 LT |
1956 | continue; |
1957 | if (idx > s_idx) | |
1958 | memset(&cb->args[0], 0, sizeof(cb->args)); | |
e2849863 | 1959 | if (rtnl_msg_handlers[idx][type].dumpit(skb, cb)) |
1da177e4 LT |
1960 | break; |
1961 | } | |
1962 | cb->family = idx; | |
1963 | ||
1964 | return skb->len; | |
1965 | } | |
1966 | ||
95c96174 | 1967 | void rtmsg_ifinfo(int type, struct net_device *dev, unsigned int change) |
1da177e4 | 1968 | { |
c346dca1 | 1969 | struct net *net = dev_net(dev); |
1da177e4 | 1970 | struct sk_buff *skb; |
0ec6d3f4 | 1971 | int err = -ENOBUFS; |
c7ac8679 | 1972 | size_t if_info_size; |
1da177e4 | 1973 | |
115c9b81 | 1974 | skb = nlmsg_new((if_info_size = if_nlmsg_size(dev, 0)), GFP_KERNEL); |
0ec6d3f4 TG |
1975 | if (skb == NULL) |
1976 | goto errout; | |
1da177e4 | 1977 | |
115c9b81 | 1978 | err = rtnl_fill_ifinfo(skb, dev, type, 0, 0, change, 0, 0); |
26932566 PM |
1979 | if (err < 0) { |
1980 | /* -EMSGSIZE implies BUG in if_nlmsg_size() */ | |
1981 | WARN_ON(err == -EMSGSIZE); | |
1982 | kfree_skb(skb); | |
1983 | goto errout; | |
1984 | } | |
1ce85fe4 PNA |
1985 | rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_KERNEL); |
1986 | return; | |
0ec6d3f4 TG |
1987 | errout: |
1988 | if (err < 0) | |
4b3da706 | 1989 | rtnl_set_sk_err(net, RTNLGRP_LINK, err); |
1da177e4 LT |
1990 | } |
1991 | ||
d83b0603 JF |
1992 | static int nlmsg_populate_fdb_fill(struct sk_buff *skb, |
1993 | struct net_device *dev, | |
1994 | u8 *addr, u32 pid, u32 seq, | |
1995 | int type, unsigned int flags) | |
1996 | { | |
1997 | struct nlmsghdr *nlh; | |
1998 | struct ndmsg *ndm; | |
1999 | ||
2000 | nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ndm), NLM_F_MULTI); | |
2001 | if (!nlh) | |
2002 | return -EMSGSIZE; | |
2003 | ||
2004 | ndm = nlmsg_data(nlh); | |
2005 | ndm->ndm_family = AF_BRIDGE; | |
2006 | ndm->ndm_pad1 = 0; | |
2007 | ndm->ndm_pad2 = 0; | |
2008 | ndm->ndm_flags = flags; | |
2009 | ndm->ndm_type = 0; | |
2010 | ndm->ndm_ifindex = dev->ifindex; | |
2011 | ndm->ndm_state = NUD_PERMANENT; | |
2012 | ||
2013 | if (nla_put(skb, NDA_LLADDR, ETH_ALEN, addr)) | |
2014 | goto nla_put_failure; | |
2015 | ||
2016 | return nlmsg_end(skb, nlh); | |
2017 | ||
2018 | nla_put_failure: | |
2019 | nlmsg_cancel(skb, nlh); | |
2020 | return -EMSGSIZE; | |
2021 | } | |
2022 | ||
3ff661c3 JF |
2023 | static inline size_t rtnl_fdb_nlmsg_size(void) |
2024 | { | |
2025 | return NLMSG_ALIGN(sizeof(struct ndmsg)) + nla_total_size(ETH_ALEN); | |
2026 | } | |
2027 | ||
2028 | static void rtnl_fdb_notify(struct net_device *dev, u8 *addr, int type) | |
2029 | { | |
2030 | struct net *net = dev_net(dev); | |
2031 | struct sk_buff *skb; | |
2032 | int err = -ENOBUFS; | |
2033 | ||
2034 | skb = nlmsg_new(rtnl_fdb_nlmsg_size(), GFP_ATOMIC); | |
2035 | if (!skb) | |
2036 | goto errout; | |
2037 | ||
2038 | err = nlmsg_populate_fdb_fill(skb, dev, addr, 0, 0, type, NTF_SELF); | |
2039 | if (err < 0) { | |
2040 | kfree_skb(skb); | |
2041 | goto errout; | |
2042 | } | |
2043 | ||
2044 | rtnl_notify(skb, net, 0, RTNLGRP_NEIGH, NULL, GFP_ATOMIC); | |
2045 | return; | |
2046 | errout: | |
2047 | rtnl_set_sk_err(net, RTNLGRP_NEIGH, err); | |
2048 | } | |
2049 | ||
77162022 JF |
2050 | static int rtnl_fdb_add(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) |
2051 | { | |
2052 | struct net *net = sock_net(skb->sk); | |
2053 | struct net_device *master = NULL; | |
2054 | struct ndmsg *ndm; | |
2055 | struct nlattr *tb[NDA_MAX+1]; | |
2056 | struct net_device *dev; | |
2057 | u8 *addr; | |
2058 | int err; | |
2059 | ||
2060 | err = nlmsg_parse(nlh, sizeof(*ndm), tb, NDA_MAX, NULL); | |
2061 | if (err < 0) | |
2062 | return err; | |
2063 | ||
2064 | ndm = nlmsg_data(nlh); | |
2065 | if (ndm->ndm_ifindex == 0) { | |
2066 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid ifindex\n"); | |
2067 | return -EINVAL; | |
2068 | } | |
2069 | ||
2070 | dev = __dev_get_by_index(net, ndm->ndm_ifindex); | |
2071 | if (dev == NULL) { | |
2072 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with unknown ifindex\n"); | |
2073 | return -ENODEV; | |
2074 | } | |
2075 | ||
2076 | if (!tb[NDA_LLADDR] || nla_len(tb[NDA_LLADDR]) != ETH_ALEN) { | |
2077 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid address\n"); | |
2078 | return -EINVAL; | |
2079 | } | |
2080 | ||
2081 | addr = nla_data(tb[NDA_LLADDR]); | |
2082 | if (!is_valid_ether_addr(addr)) { | |
2083 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid ether address\n"); | |
2084 | return -EINVAL; | |
2085 | } | |
2086 | ||
2087 | err = -EOPNOTSUPP; | |
2088 | ||
2089 | /* Support fdb on master device the net/bridge default case */ | |
2090 | if ((!ndm->ndm_flags || ndm->ndm_flags & NTF_MASTER) && | |
2091 | (dev->priv_flags & IFF_BRIDGE_PORT)) { | |
2092 | master = dev->master; | |
edc7d573 | 2093 | err = master->netdev_ops->ndo_fdb_add(ndm, tb, |
2094 | dev, addr, | |
77162022 JF |
2095 | nlh->nlmsg_flags); |
2096 | if (err) | |
2097 | goto out; | |
2098 | else | |
2099 | ndm->ndm_flags &= ~NTF_MASTER; | |
2100 | } | |
2101 | ||
2102 | /* Embedded bridge, macvlan, and any other device support */ | |
2103 | if ((ndm->ndm_flags & NTF_SELF) && dev->netdev_ops->ndo_fdb_add) { | |
edc7d573 | 2104 | err = dev->netdev_ops->ndo_fdb_add(ndm, tb, |
2105 | dev, addr, | |
77162022 JF |
2106 | nlh->nlmsg_flags); |
2107 | ||
3ff661c3 JF |
2108 | if (!err) { |
2109 | rtnl_fdb_notify(dev, addr, RTM_NEWNEIGH); | |
77162022 | 2110 | ndm->ndm_flags &= ~NTF_SELF; |
3ff661c3 | 2111 | } |
77162022 JF |
2112 | } |
2113 | out: | |
2114 | return err; | |
2115 | } | |
2116 | ||
2117 | static int rtnl_fdb_del(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) | |
2118 | { | |
2119 | struct net *net = sock_net(skb->sk); | |
2120 | struct ndmsg *ndm; | |
2121 | struct nlattr *llattr; | |
2122 | struct net_device *dev; | |
2123 | int err = -EINVAL; | |
2124 | __u8 *addr; | |
2125 | ||
2126 | if (nlmsg_len(nlh) < sizeof(*ndm)) | |
2127 | return -EINVAL; | |
2128 | ||
2129 | ndm = nlmsg_data(nlh); | |
2130 | if (ndm->ndm_ifindex == 0) { | |
2131 | pr_info("PF_BRIDGE: RTM_DELNEIGH with invalid ifindex\n"); | |
2132 | return -EINVAL; | |
2133 | } | |
2134 | ||
2135 | dev = __dev_get_by_index(net, ndm->ndm_ifindex); | |
2136 | if (dev == NULL) { | |
2137 | pr_info("PF_BRIDGE: RTM_DELNEIGH with unknown ifindex\n"); | |
2138 | return -ENODEV; | |
2139 | } | |
2140 | ||
2141 | llattr = nlmsg_find_attr(nlh, sizeof(*ndm), NDA_LLADDR); | |
2142 | if (llattr == NULL || nla_len(llattr) != ETH_ALEN) { | |
2143 | pr_info("PF_BRIGDE: RTM_DELNEIGH with invalid address\n"); | |
2144 | return -EINVAL; | |
2145 | } | |
2146 | ||
2147 | addr = nla_data(llattr); | |
2148 | err = -EOPNOTSUPP; | |
2149 | ||
2150 | /* Support fdb on master device the net/bridge default case */ | |
2151 | if ((!ndm->ndm_flags || ndm->ndm_flags & NTF_MASTER) && | |
2152 | (dev->priv_flags & IFF_BRIDGE_PORT)) { | |
2153 | struct net_device *master = dev->master; | |
2154 | ||
2155 | if (master->netdev_ops->ndo_fdb_del) | |
2156 | err = master->netdev_ops->ndo_fdb_del(ndm, dev, addr); | |
2157 | ||
2158 | if (err) | |
2159 | goto out; | |
2160 | else | |
2161 | ndm->ndm_flags &= ~NTF_MASTER; | |
2162 | } | |
2163 | ||
2164 | /* Embedded bridge, macvlan, and any other device support */ | |
2165 | if ((ndm->ndm_flags & NTF_SELF) && dev->netdev_ops->ndo_fdb_del) { | |
2166 | err = dev->netdev_ops->ndo_fdb_del(ndm, dev, addr); | |
2167 | ||
3ff661c3 JF |
2168 | if (!err) { |
2169 | rtnl_fdb_notify(dev, addr, RTM_DELNEIGH); | |
77162022 | 2170 | ndm->ndm_flags &= ~NTF_SELF; |
3ff661c3 | 2171 | } |
77162022 JF |
2172 | } |
2173 | out: | |
2174 | return err; | |
2175 | } | |
2176 | ||
d83b0603 JF |
2177 | static int nlmsg_populate_fdb(struct sk_buff *skb, |
2178 | struct netlink_callback *cb, | |
2179 | struct net_device *dev, | |
2180 | int *idx, | |
2181 | struct netdev_hw_addr_list *list) | |
2182 | { | |
2183 | struct netdev_hw_addr *ha; | |
2184 | int err; | |
15e47304 | 2185 | u32 portid, seq; |
d83b0603 | 2186 | |
15e47304 | 2187 | portid = NETLINK_CB(cb->skb).portid; |
d83b0603 JF |
2188 | seq = cb->nlh->nlmsg_seq; |
2189 | ||
2190 | list_for_each_entry(ha, &list->list, list) { | |
2191 | if (*idx < cb->args[0]) | |
2192 | goto skip; | |
2193 | ||
2194 | err = nlmsg_populate_fdb_fill(skb, dev, ha->addr, | |
15e47304 | 2195 | portid, seq, 0, NTF_SELF); |
d83b0603 JF |
2196 | if (err < 0) |
2197 | return err; | |
2198 | skip: | |
2199 | *idx += 1; | |
2200 | } | |
2201 | return 0; | |
2202 | } | |
2203 | ||
2204 | /** | |
2c53040f | 2205 | * ndo_dflt_fdb_dump - default netdevice operation to dump an FDB table. |
d83b0603 JF |
2206 | * @nlh: netlink message header |
2207 | * @dev: netdevice | |
2208 | * | |
2209 | * Default netdevice operation to dump the existing unicast address list. | |
2210 | * Returns zero on success. | |
2211 | */ | |
2212 | int ndo_dflt_fdb_dump(struct sk_buff *skb, | |
2213 | struct netlink_callback *cb, | |
2214 | struct net_device *dev, | |
2215 | int idx) | |
2216 | { | |
2217 | int err; | |
2218 | ||
2219 | netif_addr_lock_bh(dev); | |
2220 | err = nlmsg_populate_fdb(skb, cb, dev, &idx, &dev->uc); | |
2221 | if (err) | |
2222 | goto out; | |
2223 | nlmsg_populate_fdb(skb, cb, dev, &idx, &dev->mc); | |
2224 | out: | |
2225 | netif_addr_unlock_bh(dev); | |
2226 | return idx; | |
2227 | } | |
2228 | EXPORT_SYMBOL(ndo_dflt_fdb_dump); | |
2229 | ||
77162022 JF |
2230 | static int rtnl_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb) |
2231 | { | |
2232 | int idx = 0; | |
2233 | struct net *net = sock_net(skb->sk); | |
2234 | struct net_device *dev; | |
2235 | ||
2236 | rcu_read_lock(); | |
2237 | for_each_netdev_rcu(net, dev) { | |
2238 | if (dev->priv_flags & IFF_BRIDGE_PORT) { | |
2239 | struct net_device *master = dev->master; | |
2240 | const struct net_device_ops *ops = master->netdev_ops; | |
2241 | ||
2242 | if (ops->ndo_fdb_dump) | |
2243 | idx = ops->ndo_fdb_dump(skb, cb, dev, idx); | |
2244 | } | |
2245 | ||
2246 | if (dev->netdev_ops->ndo_fdb_dump) | |
2247 | idx = dev->netdev_ops->ndo_fdb_dump(skb, cb, dev, idx); | |
2248 | } | |
2249 | rcu_read_unlock(); | |
2250 | ||
2251 | cb->args[0] = idx; | |
2252 | return skb->len; | |
2253 | } | |
2254 | ||
1da177e4 LT |
2255 | /* Protected by RTNL sempahore. */ |
2256 | static struct rtattr **rta_buf; | |
2257 | static int rtattr_max; | |
2258 | ||
2259 | /* Process one rtnetlink message. */ | |
2260 | ||
1d00a4eb | 2261 | static int rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh) |
1da177e4 | 2262 | { |
3b1e0a65 | 2263 | struct net *net = sock_net(skb->sk); |
e2849863 | 2264 | rtnl_doit_func doit; |
1da177e4 LT |
2265 | int sz_idx, kind; |
2266 | int min_len; | |
2267 | int family; | |
2268 | int type; | |
2907c35f | 2269 | int err; |
1da177e4 | 2270 | |
1da177e4 | 2271 | type = nlh->nlmsg_type; |
1da177e4 | 2272 | if (type > RTM_MAX) |
038890fe | 2273 | return -EOPNOTSUPP; |
1da177e4 LT |
2274 | |
2275 | type -= RTM_BASE; | |
2276 | ||
2277 | /* All the messages must have at least 1 byte length */ | |
2278 | if (nlh->nlmsg_len < NLMSG_LENGTH(sizeof(struct rtgenmsg))) | |
2279 | return 0; | |
2280 | ||
e0d087af | 2281 | family = ((struct rtgenmsg *)NLMSG_DATA(nlh))->rtgen_family; |
1da177e4 LT |
2282 | sz_idx = type>>2; |
2283 | kind = type&3; | |
2284 | ||
fd778461 | 2285 | if (kind != 2 && !capable(CAP_NET_ADMIN)) |
1d00a4eb | 2286 | return -EPERM; |
1da177e4 | 2287 | |
b8f3ab42 | 2288 | if (kind == 2 && nlh->nlmsg_flags&NLM_F_DUMP) { |
97c53cac | 2289 | struct sock *rtnl; |
e2849863 | 2290 | rtnl_dumpit_func dumpit; |
c7ac8679 GR |
2291 | rtnl_calcit_func calcit; |
2292 | u16 min_dump_alloc = 0; | |
1da177e4 | 2293 | |
e2849863 TG |
2294 | dumpit = rtnl_get_dumpit(family, type); |
2295 | if (dumpit == NULL) | |
038890fe | 2296 | return -EOPNOTSUPP; |
c7ac8679 GR |
2297 | calcit = rtnl_get_calcit(family, type); |
2298 | if (calcit) | |
115c9b81 | 2299 | min_dump_alloc = calcit(skb, nlh); |
9ac4a169 | 2300 | |
2907c35f | 2301 | __rtnl_unlock(); |
97c53cac | 2302 | rtnl = net->rtnl; |
80d326fa PNA |
2303 | { |
2304 | struct netlink_dump_control c = { | |
2305 | .dump = dumpit, | |
2306 | .min_dump_alloc = min_dump_alloc, | |
2307 | }; | |
2308 | err = netlink_dump_start(rtnl, skb, nlh, &c); | |
2309 | } | |
2907c35f ED |
2310 | rtnl_lock(); |
2311 | return err; | |
1da177e4 LT |
2312 | } |
2313 | ||
2314 | memset(rta_buf, 0, (rtattr_max * sizeof(struct rtattr *))); | |
2315 | ||
2316 | min_len = rtm_min[sz_idx]; | |
2317 | if (nlh->nlmsg_len < min_len) | |
1d00a4eb | 2318 | return -EINVAL; |
1da177e4 LT |
2319 | |
2320 | if (nlh->nlmsg_len > min_len) { | |
2321 | int attrlen = nlh->nlmsg_len - NLMSG_ALIGN(min_len); | |
e0d087af | 2322 | struct rtattr *attr = (void *)nlh + NLMSG_ALIGN(min_len); |
1da177e4 LT |
2323 | |
2324 | while (RTA_OK(attr, attrlen)) { | |
95c96174 | 2325 | unsigned int flavor = attr->rta_type; |
1da177e4 LT |
2326 | if (flavor) { |
2327 | if (flavor > rta_max[sz_idx]) | |
1d00a4eb | 2328 | return -EINVAL; |
1da177e4 LT |
2329 | rta_buf[flavor-1] = attr; |
2330 | } | |
2331 | attr = RTA_NEXT(attr, attrlen); | |
2332 | } | |
2333 | } | |
2334 | ||
e2849863 TG |
2335 | doit = rtnl_get_doit(family, type); |
2336 | if (doit == NULL) | |
038890fe | 2337 | return -EOPNOTSUPP; |
1da177e4 | 2338 | |
1d00a4eb | 2339 | return doit(skb, nlh, (void *)&rta_buf[0]); |
1da177e4 LT |
2340 | } |
2341 | ||
cd40b7d3 | 2342 | static void rtnetlink_rcv(struct sk_buff *skb) |
1da177e4 | 2343 | { |
cd40b7d3 DL |
2344 | rtnl_lock(); |
2345 | netlink_rcv_skb(skb, &rtnetlink_rcv_msg); | |
2346 | rtnl_unlock(); | |
1da177e4 LT |
2347 | } |
2348 | ||
1da177e4 LT |
2349 | static int rtnetlink_event(struct notifier_block *this, unsigned long event, void *ptr) |
2350 | { | |
2351 | struct net_device *dev = ptr; | |
e9dc8653 | 2352 | |
1da177e4 | 2353 | switch (event) { |
1da177e4 LT |
2354 | case NETDEV_UP: |
2355 | case NETDEV_DOWN: | |
10de05af | 2356 | case NETDEV_PRE_UP: |
d90a909e EB |
2357 | case NETDEV_POST_INIT: |
2358 | case NETDEV_REGISTER: | |
1da177e4 | 2359 | case NETDEV_CHANGE: |
755d0e77 | 2360 | case NETDEV_PRE_TYPE_CHANGE: |
1da177e4 | 2361 | case NETDEV_GOING_DOWN: |
a2835763 | 2362 | case NETDEV_UNREGISTER: |
0115e8e3 | 2363 | case NETDEV_UNREGISTER_FINAL: |
ac3d3f81 AW |
2364 | case NETDEV_RELEASE: |
2365 | case NETDEV_JOIN: | |
1da177e4 LT |
2366 | break; |
2367 | default: | |
2368 | rtmsg_ifinfo(RTM_NEWLINK, dev, 0); | |
2369 | break; | |
2370 | } | |
2371 | return NOTIFY_DONE; | |
2372 | } | |
2373 | ||
2374 | static struct notifier_block rtnetlink_dev_notifier = { | |
2375 | .notifier_call = rtnetlink_event, | |
2376 | }; | |
2377 | ||
97c53cac | 2378 | |
2c8c1e72 | 2379 | static int __net_init rtnetlink_net_init(struct net *net) |
97c53cac DL |
2380 | { |
2381 | struct sock *sk; | |
a31f2d17 PNA |
2382 | struct netlink_kernel_cfg cfg = { |
2383 | .groups = RTNLGRP_MAX, | |
2384 | .input = rtnetlink_rcv, | |
2385 | .cb_mutex = &rtnl_mutex, | |
9785e10a | 2386 | .flags = NL_CFG_F_NONROOT_RECV, |
a31f2d17 PNA |
2387 | }; |
2388 | ||
9f00d977 | 2389 | sk = netlink_kernel_create(net, NETLINK_ROUTE, &cfg); |
97c53cac DL |
2390 | if (!sk) |
2391 | return -ENOMEM; | |
97c53cac DL |
2392 | net->rtnl = sk; |
2393 | return 0; | |
2394 | } | |
2395 | ||
2c8c1e72 | 2396 | static void __net_exit rtnetlink_net_exit(struct net *net) |
97c53cac | 2397 | { |
775516bf DL |
2398 | netlink_kernel_release(net->rtnl); |
2399 | net->rtnl = NULL; | |
97c53cac DL |
2400 | } |
2401 | ||
2402 | static struct pernet_operations rtnetlink_net_ops = { | |
2403 | .init = rtnetlink_net_init, | |
2404 | .exit = rtnetlink_net_exit, | |
2405 | }; | |
2406 | ||
1da177e4 LT |
2407 | void __init rtnetlink_init(void) |
2408 | { | |
2409 | int i; | |
2410 | ||
2411 | rtattr_max = 0; | |
2412 | for (i = 0; i < ARRAY_SIZE(rta_max); i++) | |
2413 | if (rta_max[i] > rtattr_max) | |
2414 | rtattr_max = rta_max[i]; | |
2415 | rta_buf = kmalloc(rtattr_max * sizeof(struct rtattr *), GFP_KERNEL); | |
2416 | if (!rta_buf) | |
2417 | panic("rtnetlink_init: cannot allocate rta_buf\n"); | |
2418 | ||
97c53cac | 2419 | if (register_pernet_subsys(&rtnetlink_net_ops)) |
1da177e4 | 2420 | panic("rtnetlink_init: cannot initialize rtnetlink\n"); |
97c53cac | 2421 | |
1da177e4 | 2422 | register_netdevice_notifier(&rtnetlink_dev_notifier); |
340d17fc | 2423 | |
c7ac8679 GR |
2424 | rtnl_register(PF_UNSPEC, RTM_GETLINK, rtnl_getlink, |
2425 | rtnl_dump_ifinfo, rtnl_calcit); | |
2426 | rtnl_register(PF_UNSPEC, RTM_SETLINK, rtnl_setlink, NULL, NULL); | |
2427 | rtnl_register(PF_UNSPEC, RTM_NEWLINK, rtnl_newlink, NULL, NULL); | |
2428 | rtnl_register(PF_UNSPEC, RTM_DELLINK, rtnl_dellink, NULL, NULL); | |
687ad8cc | 2429 | |
c7ac8679 GR |
2430 | rtnl_register(PF_UNSPEC, RTM_GETADDR, NULL, rtnl_dump_all, NULL); |
2431 | rtnl_register(PF_UNSPEC, RTM_GETROUTE, NULL, rtnl_dump_all, NULL); | |
77162022 JF |
2432 | |
2433 | rtnl_register(PF_BRIDGE, RTM_NEWNEIGH, rtnl_fdb_add, NULL, NULL); | |
2434 | rtnl_register(PF_BRIDGE, RTM_DELNEIGH, rtnl_fdb_del, NULL, NULL); | |
2435 | rtnl_register(PF_BRIDGE, RTM_GETNEIGH, NULL, rtnl_fdb_dump, NULL); | |
1da177e4 LT |
2436 | } |
2437 |