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> |
f6f6424b | 39 | #include <linux/if_vlan.h> |
ebc08a6f | 40 | #include <linux/pci.h> |
77162022 | 41 | #include <linux/etherdevice.h> |
1da177e4 | 42 | |
7c0f6ba6 | 43 | #include <linux/uaccess.h> |
1da177e4 LT |
44 | |
45 | #include <linux/inet.h> | |
46 | #include <linux/netdevice.h> | |
82f28412 | 47 | #include <net/switchdev.h> |
1da177e4 LT |
48 | #include <net/ip.h> |
49 | #include <net/protocol.h> | |
50 | #include <net/arp.h> | |
51 | #include <net/route.h> | |
52 | #include <net/udp.h> | |
ea697639 | 53 | #include <net/tcp.h> |
1da177e4 LT |
54 | #include <net/sock.h> |
55 | #include <net/pkt_sched.h> | |
14c0b97d | 56 | #include <net/fib_rules.h> |
e2849863 | 57 | #include <net/rtnetlink.h> |
30ffee84 | 58 | #include <net/net_namespace.h> |
1da177e4 | 59 | |
e0d087af | 60 | struct rtnl_link { |
e2849863 TG |
61 | rtnl_doit_func doit; |
62 | rtnl_dumpit_func dumpit; | |
c7ac8679 | 63 | rtnl_calcit_func calcit; |
e2849863 TG |
64 | }; |
65 | ||
6756ae4b | 66 | static DEFINE_MUTEX(rtnl_mutex); |
1da177e4 LT |
67 | |
68 | void rtnl_lock(void) | |
69 | { | |
6756ae4b | 70 | mutex_lock(&rtnl_mutex); |
1da177e4 | 71 | } |
e0d087af | 72 | EXPORT_SYMBOL(rtnl_lock); |
1da177e4 | 73 | |
1b5c5493 ED |
74 | static struct sk_buff *defer_kfree_skb_list; |
75 | void rtnl_kfree_skbs(struct sk_buff *head, struct sk_buff *tail) | |
76 | { | |
77 | if (head && tail) { | |
78 | tail->next = defer_kfree_skb_list; | |
79 | defer_kfree_skb_list = head; | |
80 | } | |
81 | } | |
82 | EXPORT_SYMBOL(rtnl_kfree_skbs); | |
83 | ||
6756ae4b | 84 | void __rtnl_unlock(void) |
1da177e4 | 85 | { |
1b5c5493 ED |
86 | struct sk_buff *head = defer_kfree_skb_list; |
87 | ||
88 | defer_kfree_skb_list = NULL; | |
89 | ||
6756ae4b | 90 | mutex_unlock(&rtnl_mutex); |
1b5c5493 ED |
91 | |
92 | while (head) { | |
93 | struct sk_buff *next = head->next; | |
94 | ||
95 | kfree_skb(head); | |
96 | cond_resched(); | |
97 | head = next; | |
98 | } | |
1da177e4 | 99 | } |
6756ae4b | 100 | |
1da177e4 LT |
101 | void rtnl_unlock(void) |
102 | { | |
58ec3b4d | 103 | /* This fellow will unlock it for us. */ |
1da177e4 LT |
104 | netdev_run_todo(); |
105 | } | |
e0d087af | 106 | EXPORT_SYMBOL(rtnl_unlock); |
1da177e4 | 107 | |
6756ae4b SH |
108 | int rtnl_trylock(void) |
109 | { | |
110 | return mutex_trylock(&rtnl_mutex); | |
111 | } | |
e0d087af | 112 | EXPORT_SYMBOL(rtnl_trylock); |
6756ae4b | 113 | |
c9c1014b PM |
114 | int rtnl_is_locked(void) |
115 | { | |
116 | return mutex_is_locked(&rtnl_mutex); | |
117 | } | |
e0d087af | 118 | EXPORT_SYMBOL(rtnl_is_locked); |
c9c1014b | 119 | |
a898def2 | 120 | #ifdef CONFIG_PROVE_LOCKING |
0cbf3343 | 121 | bool lockdep_rtnl_is_held(void) |
a898def2 PM |
122 | { |
123 | return lockdep_is_held(&rtnl_mutex); | |
124 | } | |
125 | EXPORT_SYMBOL(lockdep_rtnl_is_held); | |
126 | #endif /* #ifdef CONFIG_PROVE_LOCKING */ | |
127 | ||
25239cee | 128 | static struct rtnl_link *rtnl_msg_handlers[RTNL_FAMILY_MAX + 1]; |
e2849863 TG |
129 | |
130 | static inline int rtm_msgindex(int msgtype) | |
131 | { | |
132 | int msgindex = msgtype - RTM_BASE; | |
133 | ||
134 | /* | |
135 | * msgindex < 0 implies someone tried to register a netlink | |
136 | * control code. msgindex >= RTM_NR_MSGTYPES may indicate that | |
137 | * the message type has not been added to linux/rtnetlink.h | |
138 | */ | |
139 | BUG_ON(msgindex < 0 || msgindex >= RTM_NR_MSGTYPES); | |
140 | ||
141 | return msgindex; | |
142 | } | |
143 | ||
144 | static rtnl_doit_func rtnl_get_doit(int protocol, int msgindex) | |
145 | { | |
146 | struct rtnl_link *tab; | |
147 | ||
25239cee | 148 | if (protocol <= RTNL_FAMILY_MAX) |
0f87b1dd PM |
149 | tab = rtnl_msg_handlers[protocol]; |
150 | else | |
151 | tab = NULL; | |
152 | ||
51057f2f | 153 | if (tab == NULL || tab[msgindex].doit == NULL) |
e2849863 TG |
154 | tab = rtnl_msg_handlers[PF_UNSPEC]; |
155 | ||
c80bbeae | 156 | return tab[msgindex].doit; |
e2849863 TG |
157 | } |
158 | ||
159 | static rtnl_dumpit_func rtnl_get_dumpit(int protocol, int msgindex) | |
160 | { | |
161 | struct rtnl_link *tab; | |
162 | ||
25239cee | 163 | if (protocol <= RTNL_FAMILY_MAX) |
0f87b1dd PM |
164 | tab = rtnl_msg_handlers[protocol]; |
165 | else | |
166 | tab = NULL; | |
167 | ||
51057f2f | 168 | if (tab == NULL || tab[msgindex].dumpit == NULL) |
e2849863 TG |
169 | tab = rtnl_msg_handlers[PF_UNSPEC]; |
170 | ||
c80bbeae | 171 | return tab[msgindex].dumpit; |
e2849863 TG |
172 | } |
173 | ||
c7ac8679 GR |
174 | static rtnl_calcit_func rtnl_get_calcit(int protocol, int msgindex) |
175 | { | |
176 | struct rtnl_link *tab; | |
177 | ||
178 | if (protocol <= RTNL_FAMILY_MAX) | |
179 | tab = rtnl_msg_handlers[protocol]; | |
180 | else | |
181 | tab = NULL; | |
182 | ||
183 | if (tab == NULL || tab[msgindex].calcit == NULL) | |
184 | tab = rtnl_msg_handlers[PF_UNSPEC]; | |
185 | ||
c80bbeae | 186 | return tab[msgindex].calcit; |
c7ac8679 GR |
187 | } |
188 | ||
e2849863 TG |
189 | /** |
190 | * __rtnl_register - Register a rtnetlink message type | |
191 | * @protocol: Protocol family or PF_UNSPEC | |
192 | * @msgtype: rtnetlink message type | |
193 | * @doit: Function pointer called for each request message | |
194 | * @dumpit: Function pointer called for each dump request (NLM_F_DUMP) message | |
c7ac8679 | 195 | * @calcit: Function pointer to calc size of dump message |
e2849863 TG |
196 | * |
197 | * Registers the specified function pointers (at least one of them has | |
198 | * to be non-NULL) to be called whenever a request message for the | |
199 | * specified protocol family and message type is received. | |
200 | * | |
201 | * The special protocol family PF_UNSPEC may be used to define fallback | |
202 | * function pointers for the case when no entry for the specific protocol | |
203 | * family exists. | |
204 | * | |
205 | * Returns 0 on success or a negative error code. | |
206 | */ | |
207 | int __rtnl_register(int protocol, int msgtype, | |
c7ac8679 GR |
208 | rtnl_doit_func doit, rtnl_dumpit_func dumpit, |
209 | rtnl_calcit_func calcit) | |
e2849863 TG |
210 | { |
211 | struct rtnl_link *tab; | |
212 | int msgindex; | |
213 | ||
25239cee | 214 | BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX); |
e2849863 TG |
215 | msgindex = rtm_msgindex(msgtype); |
216 | ||
217 | tab = rtnl_msg_handlers[protocol]; | |
218 | if (tab == NULL) { | |
219 | tab = kcalloc(RTM_NR_MSGTYPES, sizeof(*tab), GFP_KERNEL); | |
220 | if (tab == NULL) | |
221 | return -ENOBUFS; | |
222 | ||
223 | rtnl_msg_handlers[protocol] = tab; | |
224 | } | |
225 | ||
226 | if (doit) | |
227 | tab[msgindex].doit = doit; | |
228 | ||
229 | if (dumpit) | |
230 | tab[msgindex].dumpit = dumpit; | |
231 | ||
c7ac8679 GR |
232 | if (calcit) |
233 | tab[msgindex].calcit = calcit; | |
234 | ||
e2849863 TG |
235 | return 0; |
236 | } | |
e2849863 TG |
237 | EXPORT_SYMBOL_GPL(__rtnl_register); |
238 | ||
239 | /** | |
240 | * rtnl_register - Register a rtnetlink message type | |
241 | * | |
242 | * Identical to __rtnl_register() but panics on failure. This is useful | |
243 | * as failure of this function is very unlikely, it can only happen due | |
244 | * to lack of memory when allocating the chain to store all message | |
245 | * handlers for a protocol. Meant for use in init functions where lack | |
25985edc | 246 | * of memory implies no sense in continuing. |
e2849863 TG |
247 | */ |
248 | void rtnl_register(int protocol, int msgtype, | |
c7ac8679 GR |
249 | rtnl_doit_func doit, rtnl_dumpit_func dumpit, |
250 | rtnl_calcit_func calcit) | |
e2849863 | 251 | { |
c7ac8679 | 252 | if (__rtnl_register(protocol, msgtype, doit, dumpit, calcit) < 0) |
e2849863 TG |
253 | panic("Unable to register rtnetlink message handler, " |
254 | "protocol = %d, message type = %d\n", | |
255 | protocol, msgtype); | |
256 | } | |
e2849863 TG |
257 | EXPORT_SYMBOL_GPL(rtnl_register); |
258 | ||
259 | /** | |
260 | * rtnl_unregister - Unregister a rtnetlink message type | |
261 | * @protocol: Protocol family or PF_UNSPEC | |
262 | * @msgtype: rtnetlink message type | |
263 | * | |
264 | * Returns 0 on success or a negative error code. | |
265 | */ | |
266 | int rtnl_unregister(int protocol, int msgtype) | |
267 | { | |
268 | int msgindex; | |
269 | ||
25239cee | 270 | BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX); |
e2849863 TG |
271 | msgindex = rtm_msgindex(msgtype); |
272 | ||
273 | if (rtnl_msg_handlers[protocol] == NULL) | |
274 | return -ENOENT; | |
275 | ||
276 | rtnl_msg_handlers[protocol][msgindex].doit = NULL; | |
277 | rtnl_msg_handlers[protocol][msgindex].dumpit = NULL; | |
f567e950 | 278 | rtnl_msg_handlers[protocol][msgindex].calcit = NULL; |
e2849863 TG |
279 | |
280 | return 0; | |
281 | } | |
e2849863 TG |
282 | EXPORT_SYMBOL_GPL(rtnl_unregister); |
283 | ||
284 | /** | |
285 | * rtnl_unregister_all - Unregister all rtnetlink message type of a protocol | |
286 | * @protocol : Protocol family or PF_UNSPEC | |
287 | * | |
288 | * Identical to calling rtnl_unregster() for all registered message types | |
289 | * of a certain protocol family. | |
290 | */ | |
291 | void rtnl_unregister_all(int protocol) | |
292 | { | |
25239cee | 293 | BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX); |
e2849863 TG |
294 | |
295 | kfree(rtnl_msg_handlers[protocol]); | |
296 | rtnl_msg_handlers[protocol] = NULL; | |
297 | } | |
e2849863 | 298 | EXPORT_SYMBOL_GPL(rtnl_unregister_all); |
1da177e4 | 299 | |
38f7b870 PM |
300 | static LIST_HEAD(link_ops); |
301 | ||
c63044f0 ED |
302 | static const struct rtnl_link_ops *rtnl_link_ops_get(const char *kind) |
303 | { | |
304 | const struct rtnl_link_ops *ops; | |
305 | ||
306 | list_for_each_entry(ops, &link_ops, list) { | |
307 | if (!strcmp(ops->kind, kind)) | |
308 | return ops; | |
309 | } | |
310 | return NULL; | |
311 | } | |
312 | ||
38f7b870 PM |
313 | /** |
314 | * __rtnl_link_register - Register rtnl_link_ops with rtnetlink. | |
315 | * @ops: struct rtnl_link_ops * to register | |
316 | * | |
317 | * The caller must hold the rtnl_mutex. This function should be used | |
318 | * by drivers that create devices during module initialization. It | |
319 | * must be called before registering the devices. | |
320 | * | |
321 | * Returns 0 on success or a negative error code. | |
322 | */ | |
323 | int __rtnl_link_register(struct rtnl_link_ops *ops) | |
324 | { | |
c63044f0 ED |
325 | if (rtnl_link_ops_get(ops->kind)) |
326 | return -EEXIST; | |
327 | ||
b0ab2fab JP |
328 | /* The check for setup is here because if ops |
329 | * does not have that filled up, it is not possible | |
330 | * to use the ops for creating device. So do not | |
331 | * fill up dellink as well. That disables rtnl_dellink. | |
332 | */ | |
333 | if (ops->setup && !ops->dellink) | |
23289a37 | 334 | ops->dellink = unregister_netdevice_queue; |
2d85cba2 | 335 | |
38f7b870 PM |
336 | list_add_tail(&ops->list, &link_ops); |
337 | return 0; | |
338 | } | |
38f7b870 PM |
339 | EXPORT_SYMBOL_GPL(__rtnl_link_register); |
340 | ||
341 | /** | |
342 | * rtnl_link_register - Register rtnl_link_ops with rtnetlink. | |
343 | * @ops: struct rtnl_link_ops * to register | |
344 | * | |
345 | * Returns 0 on success or a negative error code. | |
346 | */ | |
347 | int rtnl_link_register(struct rtnl_link_ops *ops) | |
348 | { | |
349 | int err; | |
350 | ||
351 | rtnl_lock(); | |
352 | err = __rtnl_link_register(ops); | |
353 | rtnl_unlock(); | |
354 | return err; | |
355 | } | |
38f7b870 PM |
356 | EXPORT_SYMBOL_GPL(rtnl_link_register); |
357 | ||
669f87ba PE |
358 | static void __rtnl_kill_links(struct net *net, struct rtnl_link_ops *ops) |
359 | { | |
360 | struct net_device *dev; | |
23289a37 ED |
361 | LIST_HEAD(list_kill); |
362 | ||
669f87ba | 363 | for_each_netdev(net, dev) { |
23289a37 ED |
364 | if (dev->rtnl_link_ops == ops) |
365 | ops->dellink(dev, &list_kill); | |
669f87ba | 366 | } |
23289a37 | 367 | unregister_netdevice_many(&list_kill); |
669f87ba PE |
368 | } |
369 | ||
38f7b870 PM |
370 | /** |
371 | * __rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink. | |
372 | * @ops: struct rtnl_link_ops * to unregister | |
373 | * | |
2d85cba2 | 374 | * The caller must hold the rtnl_mutex. |
38f7b870 PM |
375 | */ |
376 | void __rtnl_link_unregister(struct rtnl_link_ops *ops) | |
377 | { | |
881d966b | 378 | struct net *net; |
2d85cba2 | 379 | |
881d966b | 380 | for_each_net(net) { |
669f87ba | 381 | __rtnl_kill_links(net, ops); |
2d85cba2 | 382 | } |
38f7b870 PM |
383 | list_del(&ops->list); |
384 | } | |
38f7b870 PM |
385 | EXPORT_SYMBOL_GPL(__rtnl_link_unregister); |
386 | ||
200b916f CW |
387 | /* Return with the rtnl_lock held when there are no network |
388 | * devices unregistering in any network namespace. | |
389 | */ | |
390 | static void rtnl_lock_unregistering_all(void) | |
391 | { | |
392 | struct net *net; | |
393 | bool unregistering; | |
ff960a73 | 394 | DEFINE_WAIT_FUNC(wait, woken_wake_function); |
200b916f | 395 | |
ff960a73 | 396 | add_wait_queue(&netdev_unregistering_wq, &wait); |
200b916f | 397 | for (;;) { |
200b916f CW |
398 | unregistering = false; |
399 | rtnl_lock(); | |
400 | for_each_net(net) { | |
401 | if (net->dev_unreg_count > 0) { | |
402 | unregistering = true; | |
403 | break; | |
404 | } | |
405 | } | |
406 | if (!unregistering) | |
407 | break; | |
408 | __rtnl_unlock(); | |
ff960a73 PZ |
409 | |
410 | wait_woken(&wait, TASK_UNINTERRUPTIBLE, MAX_SCHEDULE_TIMEOUT); | |
200b916f | 411 | } |
ff960a73 | 412 | remove_wait_queue(&netdev_unregistering_wq, &wait); |
200b916f CW |
413 | } |
414 | ||
38f7b870 PM |
415 | /** |
416 | * rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink. | |
417 | * @ops: struct rtnl_link_ops * to unregister | |
418 | */ | |
419 | void rtnl_link_unregister(struct rtnl_link_ops *ops) | |
420 | { | |
200b916f CW |
421 | /* Close the race with cleanup_net() */ |
422 | mutex_lock(&net_mutex); | |
423 | rtnl_lock_unregistering_all(); | |
38f7b870 PM |
424 | __rtnl_link_unregister(ops); |
425 | rtnl_unlock(); | |
200b916f | 426 | mutex_unlock(&net_mutex); |
38f7b870 | 427 | } |
38f7b870 PM |
428 | EXPORT_SYMBOL_GPL(rtnl_link_unregister); |
429 | ||
ba7d49b1 JP |
430 | static size_t rtnl_link_get_slave_info_data_size(const struct net_device *dev) |
431 | { | |
432 | struct net_device *master_dev; | |
433 | const struct rtnl_link_ops *ops; | |
434 | ||
435 | master_dev = netdev_master_upper_dev_get((struct net_device *) dev); | |
436 | if (!master_dev) | |
437 | return 0; | |
438 | ops = master_dev->rtnl_link_ops; | |
6049f253 | 439 | if (!ops || !ops->get_slave_size) |
ba7d49b1 JP |
440 | return 0; |
441 | /* IFLA_INFO_SLAVE_DATA + nested data */ | |
442 | return nla_total_size(sizeof(struct nlattr)) + | |
443 | ops->get_slave_size(master_dev, dev); | |
444 | } | |
445 | ||
38f7b870 PM |
446 | static size_t rtnl_link_get_size(const struct net_device *dev) |
447 | { | |
448 | const struct rtnl_link_ops *ops = dev->rtnl_link_ops; | |
449 | size_t size; | |
450 | ||
451 | if (!ops) | |
452 | return 0; | |
453 | ||
369cf77a TG |
454 | size = nla_total_size(sizeof(struct nlattr)) + /* IFLA_LINKINFO */ |
455 | nla_total_size(strlen(ops->kind) + 1); /* IFLA_INFO_KIND */ | |
38f7b870 PM |
456 | |
457 | if (ops->get_size) | |
458 | /* IFLA_INFO_DATA + nested data */ | |
369cf77a | 459 | size += nla_total_size(sizeof(struct nlattr)) + |
38f7b870 PM |
460 | ops->get_size(dev); |
461 | ||
462 | if (ops->get_xstats_size) | |
369cf77a TG |
463 | /* IFLA_INFO_XSTATS */ |
464 | size += nla_total_size(ops->get_xstats_size(dev)); | |
38f7b870 | 465 | |
ba7d49b1 JP |
466 | size += rtnl_link_get_slave_info_data_size(dev); |
467 | ||
38f7b870 PM |
468 | return size; |
469 | } | |
470 | ||
f8ff182c TG |
471 | static LIST_HEAD(rtnl_af_ops); |
472 | ||
473 | static const struct rtnl_af_ops *rtnl_af_lookup(const int family) | |
474 | { | |
475 | const struct rtnl_af_ops *ops; | |
476 | ||
477 | list_for_each_entry(ops, &rtnl_af_ops, list) { | |
478 | if (ops->family == family) | |
479 | return ops; | |
480 | } | |
481 | ||
482 | return NULL; | |
483 | } | |
484 | ||
f8ff182c TG |
485 | /** |
486 | * rtnl_af_register - Register rtnl_af_ops with rtnetlink. | |
487 | * @ops: struct rtnl_af_ops * to register | |
488 | * | |
489 | * Returns 0 on success or a negative error code. | |
490 | */ | |
3678a9d8 | 491 | void rtnl_af_register(struct rtnl_af_ops *ops) |
f8ff182c | 492 | { |
f8ff182c | 493 | rtnl_lock(); |
3678a9d8 | 494 | list_add_tail(&ops->list, &rtnl_af_ops); |
f8ff182c | 495 | rtnl_unlock(); |
f8ff182c TG |
496 | } |
497 | EXPORT_SYMBOL_GPL(rtnl_af_register); | |
498 | ||
499 | /** | |
500 | * __rtnl_af_unregister - Unregister rtnl_af_ops from rtnetlink. | |
501 | * @ops: struct rtnl_af_ops * to unregister | |
502 | * | |
503 | * The caller must hold the rtnl_mutex. | |
504 | */ | |
505 | void __rtnl_af_unregister(struct rtnl_af_ops *ops) | |
506 | { | |
507 | list_del(&ops->list); | |
508 | } | |
509 | EXPORT_SYMBOL_GPL(__rtnl_af_unregister); | |
510 | ||
511 | /** | |
512 | * rtnl_af_unregister - Unregister rtnl_af_ops from rtnetlink. | |
513 | * @ops: struct rtnl_af_ops * to unregister | |
514 | */ | |
515 | void rtnl_af_unregister(struct rtnl_af_ops *ops) | |
516 | { | |
517 | rtnl_lock(); | |
518 | __rtnl_af_unregister(ops); | |
519 | rtnl_unlock(); | |
520 | } | |
521 | EXPORT_SYMBOL_GPL(rtnl_af_unregister); | |
522 | ||
b1974ed0 AR |
523 | static size_t rtnl_link_get_af_size(const struct net_device *dev, |
524 | u32 ext_filter_mask) | |
f8ff182c TG |
525 | { |
526 | struct rtnl_af_ops *af_ops; | |
527 | size_t size; | |
528 | ||
529 | /* IFLA_AF_SPEC */ | |
530 | size = nla_total_size(sizeof(struct nlattr)); | |
531 | ||
532 | list_for_each_entry(af_ops, &rtnl_af_ops, list) { | |
533 | if (af_ops->get_link_af_size) { | |
534 | /* AF_* + nested data */ | |
535 | size += nla_total_size(sizeof(struct nlattr)) + | |
b1974ed0 | 536 | af_ops->get_link_af_size(dev, ext_filter_mask); |
f8ff182c TG |
537 | } |
538 | } | |
539 | ||
540 | return size; | |
541 | } | |
542 | ||
ba7d49b1 | 543 | static bool rtnl_have_link_slave_info(const struct net_device *dev) |
38f7b870 | 544 | { |
ba7d49b1 | 545 | struct net_device *master_dev; |
38f7b870 | 546 | |
ba7d49b1 | 547 | master_dev = netdev_master_upper_dev_get((struct net_device *) dev); |
813f020c | 548 | if (master_dev && master_dev->rtnl_link_ops) |
ba7d49b1 JP |
549 | return true; |
550 | return false; | |
551 | } | |
552 | ||
553 | static int rtnl_link_slave_info_fill(struct sk_buff *skb, | |
554 | const struct net_device *dev) | |
555 | { | |
556 | struct net_device *master_dev; | |
557 | const struct rtnl_link_ops *ops; | |
558 | struct nlattr *slave_data; | |
559 | int err; | |
38f7b870 | 560 | |
ba7d49b1 JP |
561 | master_dev = netdev_master_upper_dev_get((struct net_device *) dev); |
562 | if (!master_dev) | |
563 | return 0; | |
564 | ops = master_dev->rtnl_link_ops; | |
565 | if (!ops) | |
566 | return 0; | |
567 | if (nla_put_string(skb, IFLA_INFO_SLAVE_KIND, ops->kind) < 0) | |
568 | return -EMSGSIZE; | |
569 | if (ops->fill_slave_info) { | |
570 | slave_data = nla_nest_start(skb, IFLA_INFO_SLAVE_DATA); | |
571 | if (!slave_data) | |
572 | return -EMSGSIZE; | |
573 | err = ops->fill_slave_info(skb, master_dev, dev); | |
574 | if (err < 0) | |
575 | goto err_cancel_slave_data; | |
576 | nla_nest_end(skb, slave_data); | |
577 | } | |
578 | return 0; | |
579 | ||
580 | err_cancel_slave_data: | |
581 | nla_nest_cancel(skb, slave_data); | |
582 | return err; | |
583 | } | |
584 | ||
585 | static int rtnl_link_info_fill(struct sk_buff *skb, | |
586 | const struct net_device *dev) | |
587 | { | |
588 | const struct rtnl_link_ops *ops = dev->rtnl_link_ops; | |
589 | struct nlattr *data; | |
590 | int err; | |
591 | ||
592 | if (!ops) | |
593 | return 0; | |
38f7b870 | 594 | if (nla_put_string(skb, IFLA_INFO_KIND, ops->kind) < 0) |
ba7d49b1 | 595 | return -EMSGSIZE; |
38f7b870 PM |
596 | if (ops->fill_xstats) { |
597 | err = ops->fill_xstats(skb, dev); | |
598 | if (err < 0) | |
ba7d49b1 | 599 | return err; |
38f7b870 PM |
600 | } |
601 | if (ops->fill_info) { | |
602 | data = nla_nest_start(skb, IFLA_INFO_DATA); | |
ba7d49b1 JP |
603 | if (data == NULL) |
604 | return -EMSGSIZE; | |
38f7b870 PM |
605 | err = ops->fill_info(skb, dev); |
606 | if (err < 0) | |
607 | goto err_cancel_data; | |
608 | nla_nest_end(skb, data); | |
609 | } | |
38f7b870 PM |
610 | return 0; |
611 | ||
612 | err_cancel_data: | |
613 | nla_nest_cancel(skb, data); | |
ba7d49b1 JP |
614 | return err; |
615 | } | |
616 | ||
617 | static int rtnl_link_fill(struct sk_buff *skb, const struct net_device *dev) | |
618 | { | |
619 | struct nlattr *linkinfo; | |
620 | int err = -EMSGSIZE; | |
621 | ||
622 | linkinfo = nla_nest_start(skb, IFLA_LINKINFO); | |
623 | if (linkinfo == NULL) | |
624 | goto out; | |
625 | ||
626 | err = rtnl_link_info_fill(skb, dev); | |
627 | if (err < 0) | |
628 | goto err_cancel_link; | |
629 | ||
630 | err = rtnl_link_slave_info_fill(skb, dev); | |
631 | if (err < 0) | |
632 | goto err_cancel_link; | |
633 | ||
634 | nla_nest_end(skb, linkinfo); | |
635 | return 0; | |
636 | ||
38f7b870 PM |
637 | err_cancel_link: |
638 | nla_nest_cancel(skb, linkinfo); | |
639 | out: | |
640 | return err; | |
641 | } | |
642 | ||
95c96174 | 643 | int rtnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, unsigned int group, int echo) |
1da177e4 | 644 | { |
97c53cac | 645 | struct sock *rtnl = net->rtnl; |
1da177e4 LT |
646 | int err = 0; |
647 | ||
ac6d439d | 648 | NETLINK_CB(skb).dst_group = group; |
1da177e4 LT |
649 | if (echo) |
650 | atomic_inc(&skb->users); | |
651 | netlink_broadcast(rtnl, skb, pid, group, GFP_KERNEL); | |
652 | if (echo) | |
653 | err = netlink_unicast(rtnl, skb, pid, MSG_DONTWAIT); | |
654 | return err; | |
655 | } | |
656 | ||
97c53cac | 657 | int rtnl_unicast(struct sk_buff *skb, struct net *net, u32 pid) |
2942e900 | 658 | { |
97c53cac DL |
659 | struct sock *rtnl = net->rtnl; |
660 | ||
2942e900 TG |
661 | return nlmsg_unicast(rtnl, skb, pid); |
662 | } | |
e0d087af | 663 | EXPORT_SYMBOL(rtnl_unicast); |
2942e900 | 664 | |
1ce85fe4 PNA |
665 | void rtnl_notify(struct sk_buff *skb, struct net *net, u32 pid, u32 group, |
666 | struct nlmsghdr *nlh, gfp_t flags) | |
97676b6b | 667 | { |
97c53cac | 668 | struct sock *rtnl = net->rtnl; |
97676b6b TG |
669 | int report = 0; |
670 | ||
671 | if (nlh) | |
672 | report = nlmsg_report(nlh); | |
673 | ||
1ce85fe4 | 674 | nlmsg_notify(rtnl, skb, pid, group, report, flags); |
97676b6b | 675 | } |
e0d087af | 676 | EXPORT_SYMBOL(rtnl_notify); |
97676b6b | 677 | |
97c53cac | 678 | void rtnl_set_sk_err(struct net *net, u32 group, int error) |
97676b6b | 679 | { |
97c53cac DL |
680 | struct sock *rtnl = net->rtnl; |
681 | ||
97676b6b TG |
682 | netlink_set_err(rtnl, 0, group, error); |
683 | } | |
e0d087af | 684 | EXPORT_SYMBOL(rtnl_set_sk_err); |
97676b6b | 685 | |
1da177e4 LT |
686 | int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics) |
687 | { | |
2d7202bf TG |
688 | struct nlattr *mx; |
689 | int i, valid = 0; | |
690 | ||
691 | mx = nla_nest_start(skb, RTA_METRICS); | |
692 | if (mx == NULL) | |
693 | return -ENOBUFS; | |
694 | ||
695 | for (i = 0; i < RTAX_MAX; i++) { | |
696 | if (metrics[i]) { | |
ea697639 DB |
697 | if (i == RTAX_CC_ALGO - 1) { |
698 | char tmp[TCP_CA_NAME_MAX], *name; | |
699 | ||
700 | name = tcp_ca_get_name_by_key(metrics[i], tmp); | |
701 | if (!name) | |
702 | continue; | |
703 | if (nla_put_string(skb, i + 1, name)) | |
704 | goto nla_put_failure; | |
c3a8d947 DB |
705 | } else if (i == RTAX_FEATURES - 1) { |
706 | u32 user_features = metrics[i] & RTAX_FEATURE_MASK; | |
707 | ||
f8edcd12 PS |
708 | if (!user_features) |
709 | continue; | |
c3a8d947 DB |
710 | BUILD_BUG_ON(RTAX_FEATURE_MASK & DST_FEATURE_MASK); |
711 | if (nla_put_u32(skb, i + 1, user_features)) | |
712 | goto nla_put_failure; | |
ea697639 DB |
713 | } else { |
714 | if (nla_put_u32(skb, i + 1, metrics[i])) | |
715 | goto nla_put_failure; | |
716 | } | |
2d7202bf | 717 | valid++; |
2d7202bf | 718 | } |
1da177e4 | 719 | } |
1da177e4 | 720 | |
a57d27fc DM |
721 | if (!valid) { |
722 | nla_nest_cancel(skb, mx); | |
723 | return 0; | |
724 | } | |
2d7202bf TG |
725 | |
726 | return nla_nest_end(skb, mx); | |
727 | ||
728 | nla_put_failure: | |
bc3ed28c TG |
729 | nla_nest_cancel(skb, mx); |
730 | return -EMSGSIZE; | |
1da177e4 | 731 | } |
e0d087af | 732 | EXPORT_SYMBOL(rtnetlink_put_metrics); |
1da177e4 | 733 | |
e3703b3d | 734 | int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst, u32 id, |
87a50699 | 735 | long expires, u32 error) |
e3703b3d TG |
736 | { |
737 | struct rta_cacheinfo ci = { | |
a399a805 | 738 | .rta_lastuse = jiffies_delta_to_clock_t(jiffies - dst->lastuse), |
e3703b3d TG |
739 | .rta_used = dst->__use, |
740 | .rta_clntref = atomic_read(&(dst->__refcnt)), | |
741 | .rta_error = error, | |
742 | .rta_id = id, | |
e3703b3d TG |
743 | }; |
744 | ||
8253947e LW |
745 | if (expires) { |
746 | unsigned long clock; | |
e3703b3d | 747 | |
8253947e LW |
748 | clock = jiffies_to_clock_t(abs(expires)); |
749 | clock = min_t(unsigned long, clock, INT_MAX); | |
750 | ci.rta_expires = (expires > 0) ? clock : -clock; | |
751 | } | |
e3703b3d TG |
752 | return nla_put(skb, RTA_CACHEINFO, sizeof(ci), &ci); |
753 | } | |
e3703b3d | 754 | EXPORT_SYMBOL_GPL(rtnl_put_cacheinfo); |
1da177e4 | 755 | |
93b2d4a2 | 756 | static void set_operstate(struct net_device *dev, unsigned char transition) |
b00055aa SR |
757 | { |
758 | unsigned char operstate = dev->operstate; | |
759 | ||
e0d087af | 760 | switch (transition) { |
b00055aa SR |
761 | case IF_OPER_UP: |
762 | if ((operstate == IF_OPER_DORMANT || | |
763 | operstate == IF_OPER_UNKNOWN) && | |
764 | !netif_dormant(dev)) | |
765 | operstate = IF_OPER_UP; | |
766 | break; | |
767 | ||
768 | case IF_OPER_DORMANT: | |
769 | if (operstate == IF_OPER_UP || | |
770 | operstate == IF_OPER_UNKNOWN) | |
771 | operstate = IF_OPER_DORMANT; | |
772 | break; | |
3ff50b79 | 773 | } |
b00055aa SR |
774 | |
775 | if (dev->operstate != operstate) { | |
776 | write_lock_bh(&dev_base_lock); | |
777 | dev->operstate = operstate; | |
778 | write_unlock_bh(&dev_base_lock); | |
93b2d4a2 DM |
779 | netdev_state_change(dev); |
780 | } | |
b00055aa SR |
781 | } |
782 | ||
b1beb681 JB |
783 | static unsigned int rtnl_dev_get_flags(const struct net_device *dev) |
784 | { | |
785 | return (dev->flags & ~(IFF_PROMISC | IFF_ALLMULTI)) | | |
786 | (dev->gflags & (IFF_PROMISC | IFF_ALLMULTI)); | |
787 | } | |
788 | ||
3729d502 PM |
789 | static unsigned int rtnl_dev_combine_flags(const struct net_device *dev, |
790 | const struct ifinfomsg *ifm) | |
791 | { | |
792 | unsigned int flags = ifm->ifi_flags; | |
793 | ||
794 | /* bugwards compatibility: ifi_change == 0 is treated as ~0 */ | |
795 | if (ifm->ifi_change) | |
796 | flags = (flags & ifm->ifi_change) | | |
b1beb681 | 797 | (rtnl_dev_get_flags(dev) & ~ifm->ifi_change); |
3729d502 PM |
798 | |
799 | return flags; | |
800 | } | |
801 | ||
b60c5115 | 802 | static void copy_rtnl_link_stats(struct rtnl_link_stats *a, |
be1f3c2c | 803 | const struct rtnl_link_stats64 *b) |
1da177e4 | 804 | { |
b60c5115 TG |
805 | a->rx_packets = b->rx_packets; |
806 | a->tx_packets = b->tx_packets; | |
807 | a->rx_bytes = b->rx_bytes; | |
808 | a->tx_bytes = b->tx_bytes; | |
809 | a->rx_errors = b->rx_errors; | |
810 | a->tx_errors = b->tx_errors; | |
811 | a->rx_dropped = b->rx_dropped; | |
812 | a->tx_dropped = b->tx_dropped; | |
813 | ||
814 | a->multicast = b->multicast; | |
815 | a->collisions = b->collisions; | |
816 | ||
817 | a->rx_length_errors = b->rx_length_errors; | |
818 | a->rx_over_errors = b->rx_over_errors; | |
819 | a->rx_crc_errors = b->rx_crc_errors; | |
820 | a->rx_frame_errors = b->rx_frame_errors; | |
821 | a->rx_fifo_errors = b->rx_fifo_errors; | |
822 | a->rx_missed_errors = b->rx_missed_errors; | |
823 | ||
824 | a->tx_aborted_errors = b->tx_aborted_errors; | |
825 | a->tx_carrier_errors = b->tx_carrier_errors; | |
826 | a->tx_fifo_errors = b->tx_fifo_errors; | |
827 | a->tx_heartbeat_errors = b->tx_heartbeat_errors; | |
828 | a->tx_window_errors = b->tx_window_errors; | |
829 | ||
830 | a->rx_compressed = b->rx_compressed; | |
831 | a->tx_compressed = b->tx_compressed; | |
6e7333d3 JW |
832 | |
833 | a->rx_nohandler = b->rx_nohandler; | |
10708f37 JE |
834 | } |
835 | ||
c02db8c6 | 836 | /* All VF info */ |
115c9b81 GR |
837 | static inline int rtnl_vfinfo_size(const struct net_device *dev, |
838 | u32 ext_filter_mask) | |
ebc08a6f | 839 | { |
115c9b81 GR |
840 | if (dev->dev.parent && dev_is_pci(dev->dev.parent) && |
841 | (ext_filter_mask & RTEXT_FILTER_VF)) { | |
c02db8c6 | 842 | int num_vfs = dev_num_vf(dev->dev.parent); |
7e75f74a | 843 | size_t size = nla_total_size(0); |
045de01a | 844 | size += num_vfs * |
7e75f74a SD |
845 | (nla_total_size(0) + |
846 | nla_total_size(sizeof(struct ifla_vf_mac)) + | |
847 | nla_total_size(sizeof(struct ifla_vf_vlan)) + | |
848 | nla_total_size(0) + /* nest IFLA_VF_VLAN_LIST */ | |
79aab093 MS |
849 | nla_total_size(MAX_VLAN_LIST_LEN * |
850 | sizeof(struct ifla_vf_vlan_info)) + | |
ed616689 | 851 | nla_total_size(sizeof(struct ifla_vf_spoofchk)) + |
7e75f74a | 852 | nla_total_size(sizeof(struct ifla_vf_tx_rate)) + |
945a3676 | 853 | nla_total_size(sizeof(struct ifla_vf_rate)) + |
01a3d796 | 854 | nla_total_size(sizeof(struct ifla_vf_link_state)) + |
3b766cd8 | 855 | nla_total_size(sizeof(struct ifla_vf_rss_query_en)) + |
7e75f74a | 856 | nla_total_size(0) + /* nest IFLA_VF_STATS */ |
3b766cd8 | 857 | /* IFLA_VF_STATS_RX_PACKETS */ |
343a6d8e | 858 | nla_total_size_64bit(sizeof(__u64)) + |
3b766cd8 | 859 | /* IFLA_VF_STATS_TX_PACKETS */ |
343a6d8e | 860 | nla_total_size_64bit(sizeof(__u64)) + |
3b766cd8 | 861 | /* IFLA_VF_STATS_RX_BYTES */ |
343a6d8e | 862 | nla_total_size_64bit(sizeof(__u64)) + |
3b766cd8 | 863 | /* IFLA_VF_STATS_TX_BYTES */ |
343a6d8e | 864 | nla_total_size_64bit(sizeof(__u64)) + |
3b766cd8 | 865 | /* IFLA_VF_STATS_BROADCAST */ |
343a6d8e | 866 | nla_total_size_64bit(sizeof(__u64)) + |
3b766cd8 | 867 | /* IFLA_VF_STATS_MULTICAST */ |
343a6d8e | 868 | nla_total_size_64bit(sizeof(__u64)) + |
dd461d6a | 869 | nla_total_size(sizeof(struct ifla_vf_trust))); |
c02db8c6 CW |
870 | return size; |
871 | } else | |
ebc08a6f WM |
872 | return 0; |
873 | } | |
874 | ||
c53864fd DG |
875 | static size_t rtnl_port_size(const struct net_device *dev, |
876 | u32 ext_filter_mask) | |
57b61080 SF |
877 | { |
878 | size_t port_size = nla_total_size(4) /* PORT_VF */ | |
879 | + nla_total_size(PORT_PROFILE_MAX) /* PORT_PROFILE */ | |
880 | + nla_total_size(sizeof(struct ifla_port_vsi)) | |
881 | /* PORT_VSI_TYPE */ | |
882 | + nla_total_size(PORT_UUID_MAX) /* PORT_INSTANCE_UUID */ | |
883 | + nla_total_size(PORT_UUID_MAX) /* PORT_HOST_UUID */ | |
884 | + nla_total_size(1) /* PROT_VDP_REQUEST */ | |
885 | + nla_total_size(2); /* PORT_VDP_RESPONSE */ | |
886 | size_t vf_ports_size = nla_total_size(sizeof(struct nlattr)); | |
887 | size_t vf_port_size = nla_total_size(sizeof(struct nlattr)) | |
888 | + port_size; | |
889 | size_t port_self_size = nla_total_size(sizeof(struct nlattr)) | |
890 | + port_size; | |
891 | ||
c53864fd DG |
892 | if (!dev->netdev_ops->ndo_get_vf_port || !dev->dev.parent || |
893 | !(ext_filter_mask & RTEXT_FILTER_VF)) | |
57b61080 SF |
894 | return 0; |
895 | if (dev_num_vf(dev->dev.parent)) | |
896 | return port_self_size + vf_ports_size + | |
897 | vf_port_size * dev_num_vf(dev->dev.parent); | |
898 | else | |
899 | return port_self_size; | |
900 | } | |
901 | ||
d1fdd913 BB |
902 | static size_t rtnl_xdp_size(const struct net_device *dev) |
903 | { | |
b3cfaa31 SD |
904 | size_t xdp_size = nla_total_size(0) + /* nest IFLA_XDP */ |
905 | nla_total_size(1); /* XDP_ATTACHED */ | |
d1fdd913 BB |
906 | |
907 | if (!dev->netdev_ops->ndo_xdp) | |
908 | return 0; | |
909 | else | |
910 | return xdp_size; | |
911 | } | |
912 | ||
115c9b81 GR |
913 | static noinline size_t if_nlmsg_size(const struct net_device *dev, |
914 | u32 ext_filter_mask) | |
339bf98f TG |
915 | { |
916 | return NLMSG_ALIGN(sizeof(struct ifinfomsg)) | |
917 | + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */ | |
0b815a1a | 918 | + nla_total_size(IFALIASZ) /* IFLA_IFALIAS */ |
339bf98f | 919 | + nla_total_size(IFNAMSIZ) /* IFLA_QDISC */ |
270cb4d0 | 920 | + nla_total_size_64bit(sizeof(struct rtnl_link_ifmap)) |
339bf98f | 921 | + nla_total_size(sizeof(struct rtnl_link_stats)) |
35c58459 | 922 | + nla_total_size_64bit(sizeof(struct rtnl_link_stats64)) |
339bf98f TG |
923 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */ |
924 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_BROADCAST */ | |
925 | + nla_total_size(4) /* IFLA_TXQLEN */ | |
926 | + nla_total_size(4) /* IFLA_WEIGHT */ | |
927 | + nla_total_size(4) /* IFLA_MTU */ | |
928 | + nla_total_size(4) /* IFLA_LINK */ | |
929 | + nla_total_size(4) /* IFLA_MASTER */ | |
9a57247f | 930 | + nla_total_size(1) /* IFLA_CARRIER */ |
edbc0bb3 | 931 | + nla_total_size(4) /* IFLA_PROMISCUITY */ |
76ff5cc9 JP |
932 | + nla_total_size(4) /* IFLA_NUM_TX_QUEUES */ |
933 | + nla_total_size(4) /* IFLA_NUM_RX_QUEUES */ | |
6919756c TK |
934 | + nla_total_size(4) /* IFLA_GSO_MAX_SEGS */ |
935 | + nla_total_size(4) /* IFLA_GSO_MAX_SIZE */ | |
339bf98f | 936 | + nla_total_size(1) /* IFLA_OPERSTATE */ |
38f7b870 | 937 | + nla_total_size(1) /* IFLA_LINKMODE */ |
2d3b479d | 938 | + nla_total_size(4) /* IFLA_CARRIER_CHANGES */ |
d37512a2 | 939 | + nla_total_size(4) /* IFLA_LINK_NETNSID */ |
115c9b81 GR |
940 | + nla_total_size(ext_filter_mask |
941 | & RTEXT_FILTER_VF ? 4 : 0) /* IFLA_NUM_VF */ | |
942 | + rtnl_vfinfo_size(dev, ext_filter_mask) /* IFLA_VFINFO_LIST */ | |
c53864fd | 943 | + rtnl_port_size(dev, ext_filter_mask) /* IFLA_VF_PORTS + IFLA_PORT_SELF */ |
f8ff182c | 944 | + rtnl_link_get_size(dev) /* IFLA_LINKINFO */ |
b1974ed0 | 945 | + rtnl_link_get_af_size(dev, ext_filter_mask) /* IFLA_AF_SPEC */ |
82f28412 | 946 | + nla_total_size(MAX_PHYS_ITEM_ID_LEN) /* IFLA_PHYS_PORT_ID */ |
88d6378b | 947 | + nla_total_size(MAX_PHYS_ITEM_ID_LEN) /* IFLA_PHYS_SWITCH_ID */ |
c57c7a95 | 948 | + nla_total_size(IFNAMSIZ) /* IFLA_PHYS_PORT_NAME */ |
d1fdd913 | 949 | + rtnl_xdp_size(dev) /* IFLA_XDP */ |
88d6378b AK |
950 | + nla_total_size(1); /* IFLA_PROTO_DOWN */ |
951 | ||
339bf98f TG |
952 | } |
953 | ||
57b61080 SF |
954 | static int rtnl_vf_ports_fill(struct sk_buff *skb, struct net_device *dev) |
955 | { | |
956 | struct nlattr *vf_ports; | |
957 | struct nlattr *vf_port; | |
958 | int vf; | |
959 | int err; | |
960 | ||
961 | vf_ports = nla_nest_start(skb, IFLA_VF_PORTS); | |
962 | if (!vf_ports) | |
963 | return -EMSGSIZE; | |
964 | ||
965 | for (vf = 0; vf < dev_num_vf(dev->dev.parent); vf++) { | |
966 | vf_port = nla_nest_start(skb, IFLA_VF_PORT); | |
8ca94183 SF |
967 | if (!vf_port) |
968 | goto nla_put_failure; | |
a6574349 DM |
969 | if (nla_put_u32(skb, IFLA_PORT_VF, vf)) |
970 | goto nla_put_failure; | |
57b61080 | 971 | err = dev->netdev_ops->ndo_get_vf_port(dev, vf, skb); |
8ca94183 SF |
972 | if (err == -EMSGSIZE) |
973 | goto nla_put_failure; | |
57b61080 | 974 | if (err) { |
57b61080 SF |
975 | nla_nest_cancel(skb, vf_port); |
976 | continue; | |
977 | } | |
978 | nla_nest_end(skb, vf_port); | |
979 | } | |
980 | ||
981 | nla_nest_end(skb, vf_ports); | |
982 | ||
983 | return 0; | |
8ca94183 SF |
984 | |
985 | nla_put_failure: | |
986 | nla_nest_cancel(skb, vf_ports); | |
987 | return -EMSGSIZE; | |
57b61080 SF |
988 | } |
989 | ||
990 | static int rtnl_port_self_fill(struct sk_buff *skb, struct net_device *dev) | |
991 | { | |
992 | struct nlattr *port_self; | |
993 | int err; | |
994 | ||
995 | port_self = nla_nest_start(skb, IFLA_PORT_SELF); | |
996 | if (!port_self) | |
997 | return -EMSGSIZE; | |
998 | ||
999 | err = dev->netdev_ops->ndo_get_vf_port(dev, PORT_SELF_VF, skb); | |
1000 | if (err) { | |
1001 | nla_nest_cancel(skb, port_self); | |
8ca94183 | 1002 | return (err == -EMSGSIZE) ? err : 0; |
57b61080 SF |
1003 | } |
1004 | ||
1005 | nla_nest_end(skb, port_self); | |
1006 | ||
1007 | return 0; | |
1008 | } | |
1009 | ||
c53864fd DG |
1010 | static int rtnl_port_fill(struct sk_buff *skb, struct net_device *dev, |
1011 | u32 ext_filter_mask) | |
57b61080 SF |
1012 | { |
1013 | int err; | |
1014 | ||
c53864fd DG |
1015 | if (!dev->netdev_ops->ndo_get_vf_port || !dev->dev.parent || |
1016 | !(ext_filter_mask & RTEXT_FILTER_VF)) | |
57b61080 SF |
1017 | return 0; |
1018 | ||
1019 | err = rtnl_port_self_fill(skb, dev); | |
1020 | if (err) | |
1021 | return err; | |
1022 | ||
1023 | if (dev_num_vf(dev->dev.parent)) { | |
1024 | err = rtnl_vf_ports_fill(skb, dev); | |
1025 | if (err) | |
1026 | return err; | |
1027 | } | |
1028 | ||
1029 | return 0; | |
1030 | } | |
1031 | ||
66cae9ed JP |
1032 | static int rtnl_phys_port_id_fill(struct sk_buff *skb, struct net_device *dev) |
1033 | { | |
1034 | int err; | |
02637fce | 1035 | struct netdev_phys_item_id ppid; |
66cae9ed JP |
1036 | |
1037 | err = dev_get_phys_port_id(dev, &ppid); | |
1038 | if (err) { | |
1039 | if (err == -EOPNOTSUPP) | |
1040 | return 0; | |
1041 | return err; | |
1042 | } | |
1043 | ||
1044 | if (nla_put(skb, IFLA_PHYS_PORT_ID, ppid.id_len, ppid.id)) | |
1045 | return -EMSGSIZE; | |
1046 | ||
1047 | return 0; | |
1048 | } | |
1049 | ||
db24a904 DA |
1050 | static int rtnl_phys_port_name_fill(struct sk_buff *skb, struct net_device *dev) |
1051 | { | |
1052 | char name[IFNAMSIZ]; | |
1053 | int err; | |
1054 | ||
1055 | err = dev_get_phys_port_name(dev, name, sizeof(name)); | |
1056 | if (err) { | |
1057 | if (err == -EOPNOTSUPP) | |
1058 | return 0; | |
1059 | return err; | |
1060 | } | |
1061 | ||
1062 | if (nla_put(skb, IFLA_PHYS_PORT_NAME, strlen(name), name)) | |
1063 | return -EMSGSIZE; | |
1064 | ||
1065 | return 0; | |
1066 | } | |
1067 | ||
82f28412 JP |
1068 | static int rtnl_phys_switch_id_fill(struct sk_buff *skb, struct net_device *dev) |
1069 | { | |
1070 | int err; | |
f8e20a9f | 1071 | struct switchdev_attr attr = { |
6ff64f6f | 1072 | .orig_dev = dev, |
1f868398 | 1073 | .id = SWITCHDEV_ATTR_ID_PORT_PARENT_ID, |
f8e20a9f SF |
1074 | .flags = SWITCHDEV_F_NO_RECURSE, |
1075 | }; | |
82f28412 | 1076 | |
f8e20a9f | 1077 | err = switchdev_port_attr_get(dev, &attr); |
82f28412 JP |
1078 | if (err) { |
1079 | if (err == -EOPNOTSUPP) | |
1080 | return 0; | |
1081 | return err; | |
1082 | } | |
1083 | ||
42275bd8 SF |
1084 | if (nla_put(skb, IFLA_PHYS_SWITCH_ID, attr.u.ppid.id_len, |
1085 | attr.u.ppid.id)) | |
82f28412 JP |
1086 | return -EMSGSIZE; |
1087 | ||
1088 | return 0; | |
1089 | } | |
1090 | ||
b22b941b HFS |
1091 | static noinline_for_stack int rtnl_fill_stats(struct sk_buff *skb, |
1092 | struct net_device *dev) | |
1093 | { | |
550bce59 | 1094 | struct rtnl_link_stats64 *sp; |
b22b941b | 1095 | struct nlattr *attr; |
18402843 | 1096 | |
58414d32 ND |
1097 | attr = nla_reserve_64bit(skb, IFLA_STATS64, |
1098 | sizeof(struct rtnl_link_stats64), IFLA_PAD); | |
b22b941b HFS |
1099 | if (!attr) |
1100 | return -EMSGSIZE; | |
1101 | ||
550bce59 RP |
1102 | sp = nla_data(attr); |
1103 | dev_get_stats(dev, sp); | |
b22b941b | 1104 | |
550bce59 RP |
1105 | attr = nla_reserve(skb, IFLA_STATS, |
1106 | sizeof(struct rtnl_link_stats)); | |
b22b941b HFS |
1107 | if (!attr) |
1108 | return -EMSGSIZE; | |
1109 | ||
550bce59 | 1110 | copy_rtnl_link_stats(nla_data(attr), sp); |
b22b941b HFS |
1111 | |
1112 | return 0; | |
1113 | } | |
1114 | ||
1115 | static noinline_for_stack int rtnl_fill_vfinfo(struct sk_buff *skb, | |
1116 | struct net_device *dev, | |
1117 | int vfs_num, | |
1118 | struct nlattr *vfinfo) | |
1119 | { | |
1120 | struct ifla_vf_rss_query_en vf_rss_query_en; | |
79aab093 | 1121 | struct nlattr *vf, *vfstats, *vfvlanlist; |
b22b941b | 1122 | struct ifla_vf_link_state vf_linkstate; |
79aab093 | 1123 | struct ifla_vf_vlan_info vf_vlan_info; |
b22b941b HFS |
1124 | struct ifla_vf_spoofchk vf_spoofchk; |
1125 | struct ifla_vf_tx_rate vf_tx_rate; | |
1126 | struct ifla_vf_stats vf_stats; | |
1127 | struct ifla_vf_trust vf_trust; | |
1128 | struct ifla_vf_vlan vf_vlan; | |
1129 | struct ifla_vf_rate vf_rate; | |
b22b941b HFS |
1130 | struct ifla_vf_mac vf_mac; |
1131 | struct ifla_vf_info ivi; | |
1132 | ||
1133 | /* Not all SR-IOV capable drivers support the | |
1134 | * spoofcheck and "RSS query enable" query. Preset to | |
1135 | * -1 so the user space tool can detect that the driver | |
1136 | * didn't report anything. | |
1137 | */ | |
1138 | ivi.spoofchk = -1; | |
1139 | ivi.rss_query_en = -1; | |
1140 | ivi.trusted = -1; | |
1141 | memset(ivi.mac, 0, sizeof(ivi.mac)); | |
1142 | /* The default value for VF link state is "auto" | |
1143 | * IFLA_VF_LINK_STATE_AUTO which equals zero | |
1144 | */ | |
1145 | ivi.linkstate = 0; | |
79aab093 MS |
1146 | /* VLAN Protocol by default is 802.1Q */ |
1147 | ivi.vlan_proto = htons(ETH_P_8021Q); | |
b22b941b HFS |
1148 | if (dev->netdev_ops->ndo_get_vf_config(dev, vfs_num, &ivi)) |
1149 | return 0; | |
1150 | ||
775f4f05 DC |
1151 | memset(&vf_vlan_info, 0, sizeof(vf_vlan_info)); |
1152 | ||
b22b941b HFS |
1153 | vf_mac.vf = |
1154 | vf_vlan.vf = | |
79aab093 | 1155 | vf_vlan_info.vf = |
b22b941b HFS |
1156 | vf_rate.vf = |
1157 | vf_tx_rate.vf = | |
1158 | vf_spoofchk.vf = | |
1159 | vf_linkstate.vf = | |
1160 | vf_rss_query_en.vf = | |
1161 | vf_trust.vf = ivi.vf; | |
1162 | ||
1163 | memcpy(vf_mac.mac, ivi.mac, sizeof(ivi.mac)); | |
1164 | vf_vlan.vlan = ivi.vlan; | |
1165 | vf_vlan.qos = ivi.qos; | |
79aab093 MS |
1166 | vf_vlan_info.vlan = ivi.vlan; |
1167 | vf_vlan_info.qos = ivi.qos; | |
1168 | vf_vlan_info.vlan_proto = ivi.vlan_proto; | |
b22b941b HFS |
1169 | vf_tx_rate.rate = ivi.max_tx_rate; |
1170 | vf_rate.min_tx_rate = ivi.min_tx_rate; | |
1171 | vf_rate.max_tx_rate = ivi.max_tx_rate; | |
1172 | vf_spoofchk.setting = ivi.spoofchk; | |
1173 | vf_linkstate.link_state = ivi.linkstate; | |
1174 | vf_rss_query_en.setting = ivi.rss_query_en; | |
1175 | vf_trust.setting = ivi.trusted; | |
1176 | vf = nla_nest_start(skb, IFLA_VF_INFO); | |
79aab093 MS |
1177 | if (!vf) |
1178 | goto nla_put_vfinfo_failure; | |
b22b941b HFS |
1179 | if (nla_put(skb, IFLA_VF_MAC, sizeof(vf_mac), &vf_mac) || |
1180 | nla_put(skb, IFLA_VF_VLAN, sizeof(vf_vlan), &vf_vlan) || | |
1181 | nla_put(skb, IFLA_VF_RATE, sizeof(vf_rate), | |
1182 | &vf_rate) || | |
1183 | nla_put(skb, IFLA_VF_TX_RATE, sizeof(vf_tx_rate), | |
1184 | &vf_tx_rate) || | |
1185 | nla_put(skb, IFLA_VF_SPOOFCHK, sizeof(vf_spoofchk), | |
1186 | &vf_spoofchk) || | |
1187 | nla_put(skb, IFLA_VF_LINK_STATE, sizeof(vf_linkstate), | |
1188 | &vf_linkstate) || | |
1189 | nla_put(skb, IFLA_VF_RSS_QUERY_EN, | |
1190 | sizeof(vf_rss_query_en), | |
1191 | &vf_rss_query_en) || | |
1192 | nla_put(skb, IFLA_VF_TRUST, | |
1193 | sizeof(vf_trust), &vf_trust)) | |
79aab093 MS |
1194 | goto nla_put_vf_failure; |
1195 | vfvlanlist = nla_nest_start(skb, IFLA_VF_VLAN_LIST); | |
1196 | if (!vfvlanlist) | |
1197 | goto nla_put_vf_failure; | |
1198 | if (nla_put(skb, IFLA_VF_VLAN_INFO, sizeof(vf_vlan_info), | |
1199 | &vf_vlan_info)) { | |
1200 | nla_nest_cancel(skb, vfvlanlist); | |
1201 | goto nla_put_vf_failure; | |
1202 | } | |
1203 | nla_nest_end(skb, vfvlanlist); | |
b22b941b HFS |
1204 | memset(&vf_stats, 0, sizeof(vf_stats)); |
1205 | if (dev->netdev_ops->ndo_get_vf_stats) | |
1206 | dev->netdev_ops->ndo_get_vf_stats(dev, vfs_num, | |
1207 | &vf_stats); | |
1208 | vfstats = nla_nest_start(skb, IFLA_VF_STATS); | |
79aab093 MS |
1209 | if (!vfstats) |
1210 | goto nla_put_vf_failure; | |
343a6d8e ND |
1211 | if (nla_put_u64_64bit(skb, IFLA_VF_STATS_RX_PACKETS, |
1212 | vf_stats.rx_packets, IFLA_VF_STATS_PAD) || | |
1213 | nla_put_u64_64bit(skb, IFLA_VF_STATS_TX_PACKETS, | |
1214 | vf_stats.tx_packets, IFLA_VF_STATS_PAD) || | |
1215 | nla_put_u64_64bit(skb, IFLA_VF_STATS_RX_BYTES, | |
1216 | vf_stats.rx_bytes, IFLA_VF_STATS_PAD) || | |
1217 | nla_put_u64_64bit(skb, IFLA_VF_STATS_TX_BYTES, | |
1218 | vf_stats.tx_bytes, IFLA_VF_STATS_PAD) || | |
1219 | nla_put_u64_64bit(skb, IFLA_VF_STATS_BROADCAST, | |
1220 | vf_stats.broadcast, IFLA_VF_STATS_PAD) || | |
1221 | nla_put_u64_64bit(skb, IFLA_VF_STATS_MULTICAST, | |
79aab093 MS |
1222 | vf_stats.multicast, IFLA_VF_STATS_PAD)) { |
1223 | nla_nest_cancel(skb, vfstats); | |
1224 | goto nla_put_vf_failure; | |
1225 | } | |
b22b941b HFS |
1226 | nla_nest_end(skb, vfstats); |
1227 | nla_nest_end(skb, vf); | |
1228 | return 0; | |
79aab093 MS |
1229 | |
1230 | nla_put_vf_failure: | |
1231 | nla_nest_cancel(skb, vf); | |
1232 | nla_put_vfinfo_failure: | |
1233 | nla_nest_cancel(skb, vfinfo); | |
1234 | return -EMSGSIZE; | |
b22b941b HFS |
1235 | } |
1236 | ||
1237 | static int rtnl_fill_link_ifmap(struct sk_buff *skb, struct net_device *dev) | |
1238 | { | |
5f8e4474 KL |
1239 | struct rtnl_link_ifmap map; |
1240 | ||
1241 | memset(&map, 0, sizeof(map)); | |
1242 | map.mem_start = dev->mem_start; | |
1243 | map.mem_end = dev->mem_end; | |
1244 | map.base_addr = dev->base_addr; | |
1245 | map.irq = dev->irq; | |
1246 | map.dma = dev->dma; | |
1247 | map.port = dev->if_port; | |
1248 | ||
270cb4d0 | 1249 | if (nla_put_64bit(skb, IFLA_MAP, sizeof(map), &map, IFLA_PAD)) |
b22b941b HFS |
1250 | return -EMSGSIZE; |
1251 | ||
1252 | return 0; | |
1253 | } | |
1254 | ||
d1fdd913 BB |
1255 | static int rtnl_xdp_fill(struct sk_buff *skb, struct net_device *dev) |
1256 | { | |
1257 | struct netdev_xdp xdp_op = {}; | |
1258 | struct nlattr *xdp; | |
1259 | int err; | |
1260 | ||
1261 | if (!dev->netdev_ops->ndo_xdp) | |
1262 | return 0; | |
1263 | xdp = nla_nest_start(skb, IFLA_XDP); | |
1264 | if (!xdp) | |
1265 | return -EMSGSIZE; | |
1266 | xdp_op.command = XDP_QUERY_PROG; | |
1267 | err = dev->netdev_ops->ndo_xdp(dev, &xdp_op); | |
1268 | if (err) | |
1269 | goto err_cancel; | |
1270 | err = nla_put_u8(skb, IFLA_XDP_ATTACHED, xdp_op.prog_attached); | |
1271 | if (err) | |
1272 | goto err_cancel; | |
1273 | ||
1274 | nla_nest_end(skb, xdp); | |
1275 | return 0; | |
1276 | ||
1277 | err_cancel: | |
1278 | nla_nest_cancel(skb, xdp); | |
1279 | return err; | |
1280 | } | |
1281 | ||
b60c5115 | 1282 | static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev, |
575c3e2a | 1283 | int type, u32 pid, u32 seq, u32 change, |
115c9b81 | 1284 | unsigned int flags, u32 ext_filter_mask) |
b60c5115 TG |
1285 | { |
1286 | struct ifinfomsg *ifm; | |
1287 | struct nlmsghdr *nlh; | |
b22b941b | 1288 | struct nlattr *af_spec; |
f8ff182c | 1289 | struct rtnl_af_ops *af_ops; |
898e5061 | 1290 | struct net_device *upper_dev = netdev_master_upper_dev_get(dev); |
1da177e4 | 1291 | |
2907c35f | 1292 | ASSERT_RTNL(); |
b60c5115 TG |
1293 | nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ifm), flags); |
1294 | if (nlh == NULL) | |
26932566 | 1295 | return -EMSGSIZE; |
1da177e4 | 1296 | |
b60c5115 TG |
1297 | ifm = nlmsg_data(nlh); |
1298 | ifm->ifi_family = AF_UNSPEC; | |
1299 | ifm->__ifi_pad = 0; | |
1300 | ifm->ifi_type = dev->type; | |
1301 | ifm->ifi_index = dev->ifindex; | |
1302 | ifm->ifi_flags = dev_get_flags(dev); | |
1303 | ifm->ifi_change = change; | |
1304 | ||
a6574349 DM |
1305 | if (nla_put_string(skb, IFLA_IFNAME, dev->name) || |
1306 | nla_put_u32(skb, IFLA_TXQLEN, dev->tx_queue_len) || | |
1307 | nla_put_u8(skb, IFLA_OPERSTATE, | |
1308 | netif_running(dev) ? dev->operstate : IF_OPER_DOWN) || | |
1309 | nla_put_u8(skb, IFLA_LINKMODE, dev->link_mode) || | |
1310 | nla_put_u32(skb, IFLA_MTU, dev->mtu) || | |
1311 | nla_put_u32(skb, IFLA_GROUP, dev->group) || | |
edbc0bb3 | 1312 | nla_put_u32(skb, IFLA_PROMISCUITY, dev->promiscuity) || |
76ff5cc9 | 1313 | nla_put_u32(skb, IFLA_NUM_TX_QUEUES, dev->num_tx_queues) || |
c70ce028 ED |
1314 | nla_put_u32(skb, IFLA_GSO_MAX_SEGS, dev->gso_max_segs) || |
1315 | nla_put_u32(skb, IFLA_GSO_MAX_SIZE, dev->gso_max_size) || | |
1d69c2b3 | 1316 | #ifdef CONFIG_RPS |
76ff5cc9 | 1317 | nla_put_u32(skb, IFLA_NUM_RX_QUEUES, dev->num_rx_queues) || |
1d69c2b3 | 1318 | #endif |
a54acb3a ND |
1319 | (dev->ifindex != dev_get_iflink(dev) && |
1320 | nla_put_u32(skb, IFLA_LINK, dev_get_iflink(dev))) || | |
898e5061 JP |
1321 | (upper_dev && |
1322 | nla_put_u32(skb, IFLA_MASTER, upper_dev->ifindex)) || | |
9a57247f | 1323 | nla_put_u8(skb, IFLA_CARRIER, netif_carrier_ok(dev)) || |
a6574349 DM |
1324 | (dev->qdisc && |
1325 | nla_put_string(skb, IFLA_QDISC, dev->qdisc->ops->id)) || | |
1326 | (dev->ifalias && | |
2d3b479d | 1327 | nla_put_string(skb, IFLA_IFALIAS, dev->ifalias)) || |
1328 | nla_put_u32(skb, IFLA_CARRIER_CHANGES, | |
88d6378b AK |
1329 | atomic_read(&dev->carrier_changes)) || |
1330 | nla_put_u8(skb, IFLA_PROTO_DOWN, dev->proto_down)) | |
a6574349 | 1331 | goto nla_put_failure; |
0b815a1a | 1332 | |
b22b941b HFS |
1333 | if (rtnl_fill_link_ifmap(skb, dev)) |
1334 | goto nla_put_failure; | |
1da177e4 LT |
1335 | |
1336 | if (dev->addr_len) { | |
a6574349 DM |
1337 | if (nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr) || |
1338 | nla_put(skb, IFLA_BROADCAST, dev->addr_len, dev->broadcast)) | |
1339 | goto nla_put_failure; | |
1da177e4 LT |
1340 | } |
1341 | ||
66cae9ed JP |
1342 | if (rtnl_phys_port_id_fill(skb, dev)) |
1343 | goto nla_put_failure; | |
1344 | ||
db24a904 DA |
1345 | if (rtnl_phys_port_name_fill(skb, dev)) |
1346 | goto nla_put_failure; | |
1347 | ||
82f28412 JP |
1348 | if (rtnl_phys_switch_id_fill(skb, dev)) |
1349 | goto nla_put_failure; | |
1350 | ||
b22b941b | 1351 | if (rtnl_fill_stats(skb, dev)) |
10708f37 | 1352 | goto nla_put_failure; |
10708f37 | 1353 | |
a6574349 DM |
1354 | if (dev->dev.parent && (ext_filter_mask & RTEXT_FILTER_VF) && |
1355 | nla_put_u32(skb, IFLA_NUM_VF, dev_num_vf(dev->dev.parent))) | |
1356 | goto nla_put_failure; | |
57b61080 | 1357 | |
b22b941b HFS |
1358 | if (dev->netdev_ops->ndo_get_vf_config && dev->dev.parent && |
1359 | ext_filter_mask & RTEXT_FILTER_VF) { | |
ebc08a6f | 1360 | int i; |
b22b941b | 1361 | struct nlattr *vfinfo; |
c02db8c6 CW |
1362 | int num_vfs = dev_num_vf(dev->dev.parent); |
1363 | ||
c02db8c6 CW |
1364 | vfinfo = nla_nest_start(skb, IFLA_VFINFO_LIST); |
1365 | if (!vfinfo) | |
1366 | goto nla_put_failure; | |
1367 | for (i = 0; i < num_vfs; i++) { | |
b22b941b | 1368 | if (rtnl_fill_vfinfo(skb, dev, i, vfinfo)) |
3b766cd8 | 1369 | goto nla_put_failure; |
ebc08a6f | 1370 | } |
b22b941b | 1371 | |
c02db8c6 | 1372 | nla_nest_end(skb, vfinfo); |
ebc08a6f | 1373 | } |
57b61080 | 1374 | |
c53864fd | 1375 | if (rtnl_port_fill(skb, dev, ext_filter_mask)) |
57b61080 SF |
1376 | goto nla_put_failure; |
1377 | ||
d1fdd913 BB |
1378 | if (rtnl_xdp_fill(skb, dev)) |
1379 | goto nla_put_failure; | |
1380 | ||
ba7d49b1 | 1381 | if (dev->rtnl_link_ops || rtnl_have_link_slave_info(dev)) { |
38f7b870 PM |
1382 | if (rtnl_link_fill(skb, dev) < 0) |
1383 | goto nla_put_failure; | |
1384 | } | |
1385 | ||
d37512a2 ND |
1386 | if (dev->rtnl_link_ops && |
1387 | dev->rtnl_link_ops->get_link_net) { | |
1388 | struct net *link_net = dev->rtnl_link_ops->get_link_net(dev); | |
1389 | ||
1390 | if (!net_eq(dev_net(dev), link_net)) { | |
7a0877d4 | 1391 | int id = peernet2id_alloc(dev_net(dev), link_net); |
d37512a2 ND |
1392 | |
1393 | if (nla_put_s32(skb, IFLA_LINK_NETNSID, id)) | |
1394 | goto nla_put_failure; | |
1395 | } | |
1396 | } | |
1397 | ||
f8ff182c TG |
1398 | if (!(af_spec = nla_nest_start(skb, IFLA_AF_SPEC))) |
1399 | goto nla_put_failure; | |
1400 | ||
1401 | list_for_each_entry(af_ops, &rtnl_af_ops, list) { | |
1402 | if (af_ops->fill_link_af) { | |
1403 | struct nlattr *af; | |
1404 | int err; | |
1405 | ||
1406 | if (!(af = nla_nest_start(skb, af_ops->family))) | |
1407 | goto nla_put_failure; | |
1408 | ||
d5566fd7 | 1409 | err = af_ops->fill_link_af(skb, dev, ext_filter_mask); |
f8ff182c TG |
1410 | |
1411 | /* | |
1412 | * Caller may return ENODATA to indicate that there | |
1413 | * was no data to be dumped. This is not an error, it | |
1414 | * means we should trim the attribute header and | |
1415 | * continue. | |
1416 | */ | |
1417 | if (err == -ENODATA) | |
1418 | nla_nest_cancel(skb, af); | |
1419 | else if (err < 0) | |
1420 | goto nla_put_failure; | |
1421 | ||
1422 | nla_nest_end(skb, af); | |
1423 | } | |
1424 | } | |
1425 | ||
1426 | nla_nest_end(skb, af_spec); | |
1427 | ||
053c095a JB |
1428 | nlmsg_end(skb, nlh); |
1429 | return 0; | |
b60c5115 TG |
1430 | |
1431 | nla_put_failure: | |
26932566 PM |
1432 | nlmsg_cancel(skb, nlh); |
1433 | return -EMSGSIZE; | |
1da177e4 LT |
1434 | } |
1435 | ||
f7b12606 | 1436 | static const struct nla_policy ifla_policy[IFLA_MAX+1] = { |
5176f91e | 1437 | [IFLA_IFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ-1 }, |
38f7b870 PM |
1438 | [IFLA_ADDRESS] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN }, |
1439 | [IFLA_BROADCAST] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN }, | |
5176f91e | 1440 | [IFLA_MAP] = { .len = sizeof(struct rtnl_link_ifmap) }, |
da5e0494 | 1441 | [IFLA_MTU] = { .type = NLA_U32 }, |
76e87306 | 1442 | [IFLA_LINK] = { .type = NLA_U32 }, |
fbaec0ea | 1443 | [IFLA_MASTER] = { .type = NLA_U32 }, |
9a57247f | 1444 | [IFLA_CARRIER] = { .type = NLA_U8 }, |
da5e0494 TG |
1445 | [IFLA_TXQLEN] = { .type = NLA_U32 }, |
1446 | [IFLA_WEIGHT] = { .type = NLA_U32 }, | |
1447 | [IFLA_OPERSTATE] = { .type = NLA_U8 }, | |
1448 | [IFLA_LINKMODE] = { .type = NLA_U8 }, | |
76e87306 | 1449 | [IFLA_LINKINFO] = { .type = NLA_NESTED }, |
d8a5ec67 | 1450 | [IFLA_NET_NS_PID] = { .type = NLA_U32 }, |
f0630529 | 1451 | [IFLA_NET_NS_FD] = { .type = NLA_U32 }, |
0b815a1a | 1452 | [IFLA_IFALIAS] = { .type = NLA_STRING, .len = IFALIASZ-1 }, |
c02db8c6 | 1453 | [IFLA_VFINFO_LIST] = {. type = NLA_NESTED }, |
57b61080 SF |
1454 | [IFLA_VF_PORTS] = { .type = NLA_NESTED }, |
1455 | [IFLA_PORT_SELF] = { .type = NLA_NESTED }, | |
f8ff182c | 1456 | [IFLA_AF_SPEC] = { .type = NLA_NESTED }, |
115c9b81 | 1457 | [IFLA_EXT_MASK] = { .type = NLA_U32 }, |
edbc0bb3 | 1458 | [IFLA_PROMISCUITY] = { .type = NLA_U32 }, |
76ff5cc9 JP |
1459 | [IFLA_NUM_TX_QUEUES] = { .type = NLA_U32 }, |
1460 | [IFLA_NUM_RX_QUEUES] = { .type = NLA_U32 }, | |
02637fce | 1461 | [IFLA_PHYS_PORT_ID] = { .type = NLA_BINARY, .len = MAX_PHYS_ITEM_ID_LEN }, |
2d3b479d | 1462 | [IFLA_CARRIER_CHANGES] = { .type = NLA_U32 }, /* ignored */ |
82f28412 | 1463 | [IFLA_PHYS_SWITCH_ID] = { .type = NLA_BINARY, .len = MAX_PHYS_ITEM_ID_LEN }, |
317f4810 | 1464 | [IFLA_LINK_NETNSID] = { .type = NLA_S32 }, |
88d6378b | 1465 | [IFLA_PROTO_DOWN] = { .type = NLA_U8 }, |
d1fdd913 | 1466 | [IFLA_XDP] = { .type = NLA_NESTED }, |
da5e0494 TG |
1467 | }; |
1468 | ||
38f7b870 PM |
1469 | static const struct nla_policy ifla_info_policy[IFLA_INFO_MAX+1] = { |
1470 | [IFLA_INFO_KIND] = { .type = NLA_STRING }, | |
1471 | [IFLA_INFO_DATA] = { .type = NLA_NESTED }, | |
ba7d49b1 JP |
1472 | [IFLA_INFO_SLAVE_KIND] = { .type = NLA_STRING }, |
1473 | [IFLA_INFO_SLAVE_DATA] = { .type = NLA_NESTED }, | |
38f7b870 PM |
1474 | }; |
1475 | ||
c02db8c6 | 1476 | static const struct nla_policy ifla_vf_policy[IFLA_VF_MAX+1] = { |
364d5716 DB |
1477 | [IFLA_VF_MAC] = { .len = sizeof(struct ifla_vf_mac) }, |
1478 | [IFLA_VF_VLAN] = { .len = sizeof(struct ifla_vf_vlan) }, | |
79aab093 | 1479 | [IFLA_VF_VLAN_LIST] = { .type = NLA_NESTED }, |
364d5716 DB |
1480 | [IFLA_VF_TX_RATE] = { .len = sizeof(struct ifla_vf_tx_rate) }, |
1481 | [IFLA_VF_SPOOFCHK] = { .len = sizeof(struct ifla_vf_spoofchk) }, | |
1482 | [IFLA_VF_RATE] = { .len = sizeof(struct ifla_vf_rate) }, | |
1483 | [IFLA_VF_LINK_STATE] = { .len = sizeof(struct ifla_vf_link_state) }, | |
01a3d796 | 1484 | [IFLA_VF_RSS_QUERY_EN] = { .len = sizeof(struct ifla_vf_rss_query_en) }, |
3b766cd8 | 1485 | [IFLA_VF_STATS] = { .type = NLA_NESTED }, |
dd461d6a | 1486 | [IFLA_VF_TRUST] = { .len = sizeof(struct ifla_vf_trust) }, |
cc8e27cc EC |
1487 | [IFLA_VF_IB_NODE_GUID] = { .len = sizeof(struct ifla_vf_guid) }, |
1488 | [IFLA_VF_IB_PORT_GUID] = { .len = sizeof(struct ifla_vf_guid) }, | |
3b766cd8 EBE |
1489 | }; |
1490 | ||
57b61080 SF |
1491 | static const struct nla_policy ifla_port_policy[IFLA_PORT_MAX+1] = { |
1492 | [IFLA_PORT_VF] = { .type = NLA_U32 }, | |
1493 | [IFLA_PORT_PROFILE] = { .type = NLA_STRING, | |
1494 | .len = PORT_PROFILE_MAX }, | |
1495 | [IFLA_PORT_VSI_TYPE] = { .type = NLA_BINARY, | |
1496 | .len = sizeof(struct ifla_port_vsi)}, | |
1497 | [IFLA_PORT_INSTANCE_UUID] = { .type = NLA_BINARY, | |
1498 | .len = PORT_UUID_MAX }, | |
1499 | [IFLA_PORT_HOST_UUID] = { .type = NLA_STRING, | |
1500 | .len = PORT_UUID_MAX }, | |
1501 | [IFLA_PORT_REQUEST] = { .type = NLA_U8, }, | |
1502 | [IFLA_PORT_RESPONSE] = { .type = NLA_U16, }, | |
1503 | }; | |
1504 | ||
d1fdd913 BB |
1505 | static const struct nla_policy ifla_xdp_policy[IFLA_XDP_MAX + 1] = { |
1506 | [IFLA_XDP_FD] = { .type = NLA_S32 }, | |
1507 | [IFLA_XDP_ATTACHED] = { .type = NLA_U8 }, | |
85de8576 | 1508 | [IFLA_XDP_FLAGS] = { .type = NLA_U32 }, |
d1fdd913 BB |
1509 | }; |
1510 | ||
dc599f76 DA |
1511 | static const struct rtnl_link_ops *linkinfo_to_kind_ops(const struct nlattr *nla) |
1512 | { | |
1513 | const struct rtnl_link_ops *ops = NULL; | |
1514 | struct nlattr *linfo[IFLA_INFO_MAX + 1]; | |
1515 | ||
1516 | if (nla_parse_nested(linfo, IFLA_INFO_MAX, nla, ifla_info_policy) < 0) | |
1517 | return NULL; | |
1518 | ||
1519 | if (linfo[IFLA_INFO_KIND]) { | |
1520 | char kind[MODULE_NAME_LEN]; | |
1521 | ||
1522 | nla_strlcpy(kind, linfo[IFLA_INFO_KIND], sizeof(kind)); | |
1523 | ops = rtnl_link_ops_get(kind); | |
1524 | } | |
1525 | ||
1526 | return ops; | |
1527 | } | |
1528 | ||
1529 | static bool link_master_filtered(struct net_device *dev, int master_idx) | |
1530 | { | |
1531 | struct net_device *master; | |
1532 | ||
1533 | if (!master_idx) | |
1534 | return false; | |
1535 | ||
1536 | master = netdev_master_upper_dev_get(dev); | |
1537 | if (!master || master->ifindex != master_idx) | |
1538 | return true; | |
1539 | ||
1540 | return false; | |
1541 | } | |
1542 | ||
1543 | static bool link_kind_filtered(const struct net_device *dev, | |
1544 | const struct rtnl_link_ops *kind_ops) | |
1545 | { | |
1546 | if (kind_ops && dev->rtnl_link_ops != kind_ops) | |
1547 | return true; | |
1548 | ||
1549 | return false; | |
1550 | } | |
1551 | ||
1552 | static bool link_dump_filtered(struct net_device *dev, | |
1553 | int master_idx, | |
1554 | const struct rtnl_link_ops *kind_ops) | |
1555 | { | |
1556 | if (link_master_filtered(dev, master_idx) || | |
1557 | link_kind_filtered(dev, kind_ops)) | |
1558 | return true; | |
1559 | ||
1560 | return false; | |
1561 | } | |
1562 | ||
f7b12606 JP |
1563 | static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb) |
1564 | { | |
1565 | struct net *net = sock_net(skb->sk); | |
1566 | int h, s_h; | |
1567 | int idx = 0, s_idx; | |
1568 | struct net_device *dev; | |
1569 | struct hlist_head *head; | |
1570 | struct nlattr *tb[IFLA_MAX+1]; | |
1571 | u32 ext_filter_mask = 0; | |
dc599f76 DA |
1572 | const struct rtnl_link_ops *kind_ops = NULL; |
1573 | unsigned int flags = NLM_F_MULTI; | |
1574 | int master_idx = 0; | |
973462bb | 1575 | int err; |
e5eca6d4 | 1576 | int hdrlen; |
f7b12606 JP |
1577 | |
1578 | s_h = cb->args[0]; | |
1579 | s_idx = cb->args[1]; | |
1580 | ||
f7b12606 JP |
1581 | cb->seq = net->dev_base_seq; |
1582 | ||
e5eca6d4 MS |
1583 | /* A hack to preserve kernel<->userspace interface. |
1584 | * The correct header is ifinfomsg. It is consistent with rtnl_getlink. | |
1585 | * However, before Linux v3.9 the code here assumed rtgenmsg and that's | |
1586 | * what iproute2 < v3.9.0 used. | |
1587 | * We can detect the old iproute2. Even including the IFLA_EXT_MASK | |
1588 | * attribute, its netlink message is shorter than struct ifinfomsg. | |
1589 | */ | |
1590 | hdrlen = nlmsg_len(cb->nlh) < sizeof(struct ifinfomsg) ? | |
1591 | sizeof(struct rtgenmsg) : sizeof(struct ifinfomsg); | |
1592 | ||
1593 | if (nlmsg_parse(cb->nlh, hdrlen, tb, IFLA_MAX, ifla_policy) >= 0) { | |
f7b12606 JP |
1594 | |
1595 | if (tb[IFLA_EXT_MASK]) | |
1596 | ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]); | |
dc599f76 DA |
1597 | |
1598 | if (tb[IFLA_MASTER]) | |
1599 | master_idx = nla_get_u32(tb[IFLA_MASTER]); | |
1600 | ||
1601 | if (tb[IFLA_LINKINFO]) | |
1602 | kind_ops = linkinfo_to_kind_ops(tb[IFLA_LINKINFO]); | |
1603 | ||
1604 | if (master_idx || kind_ops) | |
1605 | flags |= NLM_F_DUMP_FILTERED; | |
f7b12606 JP |
1606 | } |
1607 | ||
1608 | for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) { | |
1609 | idx = 0; | |
1610 | head = &net->dev_index_head[h]; | |
cac5e65e | 1611 | hlist_for_each_entry(dev, head, index_hlist) { |
dc599f76 | 1612 | if (link_dump_filtered(dev, master_idx, kind_ops)) |
3f0ae05d | 1613 | goto cont; |
f7b12606 JP |
1614 | if (idx < s_idx) |
1615 | goto cont; | |
973462bb DG |
1616 | err = rtnl_fill_ifinfo(skb, dev, RTM_NEWLINK, |
1617 | NETLINK_CB(cb->skb).portid, | |
1618 | cb->nlh->nlmsg_seq, 0, | |
dc599f76 | 1619 | flags, |
973462bb DG |
1620 | ext_filter_mask); |
1621 | /* If we ran out of room on the first message, | |
1622 | * we're in trouble | |
1623 | */ | |
1624 | WARN_ON((err == -EMSGSIZE) && (skb->len == 0)); | |
1625 | ||
7b46a644 | 1626 | if (err < 0) |
f7b12606 JP |
1627 | goto out; |
1628 | ||
1629 | nl_dump_check_consistent(cb, nlmsg_hdr(skb)); | |
1630 | cont: | |
1631 | idx++; | |
1632 | } | |
1633 | } | |
1634 | out: | |
f7b12606 JP |
1635 | cb->args[1] = idx; |
1636 | cb->args[0] = h; | |
1637 | ||
1638 | return skb->len; | |
1639 | } | |
1640 | ||
1641 | int rtnl_nla_parse_ifla(struct nlattr **tb, const struct nlattr *head, int len) | |
1642 | { | |
1643 | return nla_parse(tb, IFLA_MAX, head, len, ifla_policy); | |
1644 | } | |
1645 | EXPORT_SYMBOL(rtnl_nla_parse_ifla); | |
1646 | ||
81adee47 EB |
1647 | struct net *rtnl_link_get_net(struct net *src_net, struct nlattr *tb[]) |
1648 | { | |
1649 | struct net *net; | |
1650 | /* Examine the link attributes and figure out which | |
1651 | * network namespace we are talking about. | |
1652 | */ | |
1653 | if (tb[IFLA_NET_NS_PID]) | |
1654 | net = get_net_ns_by_pid(nla_get_u32(tb[IFLA_NET_NS_PID])); | |
f0630529 EB |
1655 | else if (tb[IFLA_NET_NS_FD]) |
1656 | net = get_net_ns_by_fd(nla_get_u32(tb[IFLA_NET_NS_FD])); | |
81adee47 EB |
1657 | else |
1658 | net = get_net(src_net); | |
1659 | return net; | |
1660 | } | |
1661 | EXPORT_SYMBOL(rtnl_link_get_net); | |
1662 | ||
1840bb13 TG |
1663 | static int validate_linkmsg(struct net_device *dev, struct nlattr *tb[]) |
1664 | { | |
1665 | if (dev) { | |
1666 | if (tb[IFLA_ADDRESS] && | |
1667 | nla_len(tb[IFLA_ADDRESS]) < dev->addr_len) | |
1668 | return -EINVAL; | |
1669 | ||
1670 | if (tb[IFLA_BROADCAST] && | |
1671 | nla_len(tb[IFLA_BROADCAST]) < dev->addr_len) | |
1672 | return -EINVAL; | |
1673 | } | |
1674 | ||
cf7afbfe TG |
1675 | if (tb[IFLA_AF_SPEC]) { |
1676 | struct nlattr *af; | |
1677 | int rem, err; | |
1678 | ||
1679 | nla_for_each_nested(af, tb[IFLA_AF_SPEC], rem) { | |
1680 | const struct rtnl_af_ops *af_ops; | |
1681 | ||
1682 | if (!(af_ops = rtnl_af_lookup(nla_type(af)))) | |
1683 | return -EAFNOSUPPORT; | |
1684 | ||
1685 | if (!af_ops->set_link_af) | |
1686 | return -EOPNOTSUPP; | |
1687 | ||
1688 | if (af_ops->validate_link_af) { | |
6d3a9a68 | 1689 | err = af_ops->validate_link_af(dev, af); |
cf7afbfe TG |
1690 | if (err < 0) |
1691 | return err; | |
1692 | } | |
1693 | } | |
1694 | } | |
1695 | ||
1840bb13 TG |
1696 | return 0; |
1697 | } | |
1698 | ||
cc8e27cc EC |
1699 | static int handle_infiniband_guid(struct net_device *dev, struct ifla_vf_guid *ivt, |
1700 | int guid_type) | |
1701 | { | |
1702 | const struct net_device_ops *ops = dev->netdev_ops; | |
1703 | ||
1704 | return ops->ndo_set_vf_guid(dev, ivt->vf, ivt->guid, guid_type); | |
1705 | } | |
1706 | ||
1707 | static int handle_vf_guid(struct net_device *dev, struct ifla_vf_guid *ivt, int guid_type) | |
1708 | { | |
1709 | if (dev->type != ARPHRD_INFINIBAND) | |
1710 | return -EOPNOTSUPP; | |
1711 | ||
1712 | return handle_infiniband_guid(dev, ivt, guid_type); | |
1713 | } | |
1714 | ||
4f7d2cdf | 1715 | static int do_setvfinfo(struct net_device *dev, struct nlattr **tb) |
c02db8c6 | 1716 | { |
c02db8c6 | 1717 | const struct net_device_ops *ops = dev->netdev_ops; |
4f7d2cdf | 1718 | int err = -EINVAL; |
c02db8c6 | 1719 | |
4f7d2cdf DB |
1720 | if (tb[IFLA_VF_MAC]) { |
1721 | struct ifla_vf_mac *ivm = nla_data(tb[IFLA_VF_MAC]); | |
01a3d796 | 1722 | |
4f7d2cdf DB |
1723 | err = -EOPNOTSUPP; |
1724 | if (ops->ndo_set_vf_mac) | |
1725 | err = ops->ndo_set_vf_mac(dev, ivm->vf, | |
1726 | ivm->mac); | |
1727 | if (err < 0) | |
1728 | return err; | |
1729 | } | |
1730 | ||
1731 | if (tb[IFLA_VF_VLAN]) { | |
1732 | struct ifla_vf_vlan *ivv = nla_data(tb[IFLA_VF_VLAN]); | |
1733 | ||
1734 | err = -EOPNOTSUPP; | |
1735 | if (ops->ndo_set_vf_vlan) | |
1736 | err = ops->ndo_set_vf_vlan(dev, ivv->vf, ivv->vlan, | |
79aab093 MS |
1737 | ivv->qos, |
1738 | htons(ETH_P_8021Q)); | |
1739 | if (err < 0) | |
1740 | return err; | |
1741 | } | |
1742 | ||
1743 | if (tb[IFLA_VF_VLAN_LIST]) { | |
1744 | struct ifla_vf_vlan_info *ivvl[MAX_VLAN_LIST_LEN]; | |
1745 | struct nlattr *attr; | |
1746 | int rem, len = 0; | |
1747 | ||
1748 | err = -EOPNOTSUPP; | |
1749 | if (!ops->ndo_set_vf_vlan) | |
1750 | return err; | |
1751 | ||
1752 | nla_for_each_nested(attr, tb[IFLA_VF_VLAN_LIST], rem) { | |
1753 | if (nla_type(attr) != IFLA_VF_VLAN_INFO || | |
1754 | nla_len(attr) < NLA_HDRLEN) { | |
1755 | return -EINVAL; | |
1756 | } | |
1757 | if (len >= MAX_VLAN_LIST_LEN) | |
1758 | return -EOPNOTSUPP; | |
1759 | ivvl[len] = nla_data(attr); | |
1760 | ||
1761 | len++; | |
1762 | } | |
fa34cd94 AB |
1763 | if (len == 0) |
1764 | return -EINVAL; | |
1765 | ||
79aab093 MS |
1766 | err = ops->ndo_set_vf_vlan(dev, ivvl[0]->vf, ivvl[0]->vlan, |
1767 | ivvl[0]->qos, ivvl[0]->vlan_proto); | |
4f7d2cdf DB |
1768 | if (err < 0) |
1769 | return err; | |
c02db8c6 | 1770 | } |
4f7d2cdf DB |
1771 | |
1772 | if (tb[IFLA_VF_TX_RATE]) { | |
1773 | struct ifla_vf_tx_rate *ivt = nla_data(tb[IFLA_VF_TX_RATE]); | |
1774 | struct ifla_vf_info ivf; | |
1775 | ||
1776 | err = -EOPNOTSUPP; | |
1777 | if (ops->ndo_get_vf_config) | |
1778 | err = ops->ndo_get_vf_config(dev, ivt->vf, &ivf); | |
1779 | if (err < 0) | |
1780 | return err; | |
1781 | ||
1782 | err = -EOPNOTSUPP; | |
1783 | if (ops->ndo_set_vf_rate) | |
1784 | err = ops->ndo_set_vf_rate(dev, ivt->vf, | |
1785 | ivf.min_tx_rate, | |
1786 | ivt->rate); | |
1787 | if (err < 0) | |
1788 | return err; | |
1789 | } | |
1790 | ||
1791 | if (tb[IFLA_VF_RATE]) { | |
1792 | struct ifla_vf_rate *ivt = nla_data(tb[IFLA_VF_RATE]); | |
1793 | ||
1794 | err = -EOPNOTSUPP; | |
1795 | if (ops->ndo_set_vf_rate) | |
1796 | err = ops->ndo_set_vf_rate(dev, ivt->vf, | |
1797 | ivt->min_tx_rate, | |
1798 | ivt->max_tx_rate); | |
1799 | if (err < 0) | |
1800 | return err; | |
1801 | } | |
1802 | ||
1803 | if (tb[IFLA_VF_SPOOFCHK]) { | |
1804 | struct ifla_vf_spoofchk *ivs = nla_data(tb[IFLA_VF_SPOOFCHK]); | |
1805 | ||
1806 | err = -EOPNOTSUPP; | |
1807 | if (ops->ndo_set_vf_spoofchk) | |
1808 | err = ops->ndo_set_vf_spoofchk(dev, ivs->vf, | |
1809 | ivs->setting); | |
1810 | if (err < 0) | |
1811 | return err; | |
1812 | } | |
1813 | ||
1814 | if (tb[IFLA_VF_LINK_STATE]) { | |
1815 | struct ifla_vf_link_state *ivl = nla_data(tb[IFLA_VF_LINK_STATE]); | |
1816 | ||
1817 | err = -EOPNOTSUPP; | |
1818 | if (ops->ndo_set_vf_link_state) | |
1819 | err = ops->ndo_set_vf_link_state(dev, ivl->vf, | |
1820 | ivl->link_state); | |
1821 | if (err < 0) | |
1822 | return err; | |
1823 | } | |
1824 | ||
1825 | if (tb[IFLA_VF_RSS_QUERY_EN]) { | |
1826 | struct ifla_vf_rss_query_en *ivrssq_en; | |
1827 | ||
1828 | err = -EOPNOTSUPP; | |
1829 | ivrssq_en = nla_data(tb[IFLA_VF_RSS_QUERY_EN]); | |
1830 | if (ops->ndo_set_vf_rss_query_en) | |
1831 | err = ops->ndo_set_vf_rss_query_en(dev, ivrssq_en->vf, | |
1832 | ivrssq_en->setting); | |
1833 | if (err < 0) | |
1834 | return err; | |
1835 | } | |
1836 | ||
dd461d6a HS |
1837 | if (tb[IFLA_VF_TRUST]) { |
1838 | struct ifla_vf_trust *ivt = nla_data(tb[IFLA_VF_TRUST]); | |
1839 | ||
1840 | err = -EOPNOTSUPP; | |
1841 | if (ops->ndo_set_vf_trust) | |
1842 | err = ops->ndo_set_vf_trust(dev, ivt->vf, ivt->setting); | |
1843 | if (err < 0) | |
1844 | return err; | |
1845 | } | |
1846 | ||
cc8e27cc EC |
1847 | if (tb[IFLA_VF_IB_NODE_GUID]) { |
1848 | struct ifla_vf_guid *ivt = nla_data(tb[IFLA_VF_IB_NODE_GUID]); | |
1849 | ||
1850 | if (!ops->ndo_set_vf_guid) | |
1851 | return -EOPNOTSUPP; | |
1852 | ||
1853 | return handle_vf_guid(dev, ivt, IFLA_VF_IB_NODE_GUID); | |
1854 | } | |
1855 | ||
1856 | if (tb[IFLA_VF_IB_PORT_GUID]) { | |
1857 | struct ifla_vf_guid *ivt = nla_data(tb[IFLA_VF_IB_PORT_GUID]); | |
1858 | ||
1859 | if (!ops->ndo_set_vf_guid) | |
1860 | return -EOPNOTSUPP; | |
1861 | ||
1862 | return handle_vf_guid(dev, ivt, IFLA_VF_IB_PORT_GUID); | |
1863 | } | |
1864 | ||
c02db8c6 CW |
1865 | return err; |
1866 | } | |
1867 | ||
fbaec0ea JP |
1868 | static int do_set_master(struct net_device *dev, int ifindex) |
1869 | { | |
898e5061 | 1870 | struct net_device *upper_dev = netdev_master_upper_dev_get(dev); |
fbaec0ea JP |
1871 | const struct net_device_ops *ops; |
1872 | int err; | |
1873 | ||
898e5061 JP |
1874 | if (upper_dev) { |
1875 | if (upper_dev->ifindex == ifindex) | |
fbaec0ea | 1876 | return 0; |
898e5061 | 1877 | ops = upper_dev->netdev_ops; |
fbaec0ea | 1878 | if (ops->ndo_del_slave) { |
898e5061 | 1879 | err = ops->ndo_del_slave(upper_dev, dev); |
fbaec0ea JP |
1880 | if (err) |
1881 | return err; | |
1882 | } else { | |
1883 | return -EOPNOTSUPP; | |
1884 | } | |
1885 | } | |
1886 | ||
1887 | if (ifindex) { | |
898e5061 JP |
1888 | upper_dev = __dev_get_by_index(dev_net(dev), ifindex); |
1889 | if (!upper_dev) | |
fbaec0ea | 1890 | return -EINVAL; |
898e5061 | 1891 | ops = upper_dev->netdev_ops; |
fbaec0ea | 1892 | if (ops->ndo_add_slave) { |
898e5061 | 1893 | err = ops->ndo_add_slave(upper_dev, dev); |
fbaec0ea JP |
1894 | if (err) |
1895 | return err; | |
1896 | } else { | |
1897 | return -EOPNOTSUPP; | |
1898 | } | |
1899 | } | |
1900 | return 0; | |
1901 | } | |
1902 | ||
90c325e3 | 1903 | #define DO_SETLINK_MODIFIED 0x01 |
ba998906 ND |
1904 | /* notify flag means notify + modified. */ |
1905 | #define DO_SETLINK_NOTIFY 0x03 | |
90f62cf3 EB |
1906 | static int do_setlink(const struct sk_buff *skb, |
1907 | struct net_device *dev, struct ifinfomsg *ifm, | |
90c325e3 | 1908 | struct nlattr **tb, char *ifname, int status) |
1da177e4 | 1909 | { |
d314774c | 1910 | const struct net_device_ops *ops = dev->netdev_ops; |
0157f60c | 1911 | int err; |
1da177e4 | 1912 | |
f0630529 | 1913 | if (tb[IFLA_NET_NS_PID] || tb[IFLA_NET_NS_FD]) { |
81adee47 | 1914 | struct net *net = rtnl_link_get_net(dev_net(dev), tb); |
d8a5ec67 EB |
1915 | if (IS_ERR(net)) { |
1916 | err = PTR_ERR(net); | |
1917 | goto errout; | |
1918 | } | |
90f62cf3 | 1919 | if (!netlink_ns_capable(skb, net->user_ns, CAP_NET_ADMIN)) { |
e0ebde0e | 1920 | put_net(net); |
b51642f6 EB |
1921 | err = -EPERM; |
1922 | goto errout; | |
1923 | } | |
d8a5ec67 EB |
1924 | err = dev_change_net_namespace(dev, net, ifname); |
1925 | put_net(net); | |
1926 | if (err) | |
1927 | goto errout; | |
90c325e3 | 1928 | status |= DO_SETLINK_MODIFIED; |
d8a5ec67 EB |
1929 | } |
1930 | ||
da5e0494 | 1931 | if (tb[IFLA_MAP]) { |
1da177e4 LT |
1932 | struct rtnl_link_ifmap *u_map; |
1933 | struct ifmap k_map; | |
1934 | ||
d314774c | 1935 | if (!ops->ndo_set_config) { |
1da177e4 | 1936 | err = -EOPNOTSUPP; |
0157f60c | 1937 | goto errout; |
1da177e4 LT |
1938 | } |
1939 | ||
1940 | if (!netif_device_present(dev)) { | |
1941 | err = -ENODEV; | |
0157f60c | 1942 | goto errout; |
1da177e4 | 1943 | } |
1da177e4 | 1944 | |
da5e0494 | 1945 | u_map = nla_data(tb[IFLA_MAP]); |
1da177e4 LT |
1946 | k_map.mem_start = (unsigned long) u_map->mem_start; |
1947 | k_map.mem_end = (unsigned long) u_map->mem_end; | |
1948 | k_map.base_addr = (unsigned short) u_map->base_addr; | |
1949 | k_map.irq = (unsigned char) u_map->irq; | |
1950 | k_map.dma = (unsigned char) u_map->dma; | |
1951 | k_map.port = (unsigned char) u_map->port; | |
1952 | ||
d314774c | 1953 | err = ops->ndo_set_config(dev, &k_map); |
da5e0494 | 1954 | if (err < 0) |
0157f60c | 1955 | goto errout; |
1da177e4 | 1956 | |
ba998906 | 1957 | status |= DO_SETLINK_NOTIFY; |
1da177e4 LT |
1958 | } |
1959 | ||
da5e0494 | 1960 | if (tb[IFLA_ADDRESS]) { |
70f8e78e DM |
1961 | struct sockaddr *sa; |
1962 | int len; | |
1963 | ||
70f8e78e DM |
1964 | len = sizeof(sa_family_t) + dev->addr_len; |
1965 | sa = kmalloc(len, GFP_KERNEL); | |
1966 | if (!sa) { | |
1967 | err = -ENOMEM; | |
0157f60c | 1968 | goto errout; |
70f8e78e DM |
1969 | } |
1970 | sa->sa_family = dev->type; | |
da5e0494 | 1971 | memcpy(sa->sa_data, nla_data(tb[IFLA_ADDRESS]), |
70f8e78e | 1972 | dev->addr_len); |
e7c3273e | 1973 | err = dev_set_mac_address(dev, sa); |
70f8e78e | 1974 | kfree(sa); |
1da177e4 | 1975 | if (err) |
0157f60c | 1976 | goto errout; |
90c325e3 | 1977 | status |= DO_SETLINK_MODIFIED; |
1da177e4 LT |
1978 | } |
1979 | ||
da5e0494 TG |
1980 | if (tb[IFLA_MTU]) { |
1981 | err = dev_set_mtu(dev, nla_get_u32(tb[IFLA_MTU])); | |
1982 | if (err < 0) | |
0157f60c | 1983 | goto errout; |
90c325e3 | 1984 | status |= DO_SETLINK_MODIFIED; |
1da177e4 LT |
1985 | } |
1986 | ||
cbda10fa VD |
1987 | if (tb[IFLA_GROUP]) { |
1988 | dev_set_group(dev, nla_get_u32(tb[IFLA_GROUP])); | |
ba998906 | 1989 | status |= DO_SETLINK_NOTIFY; |
cbda10fa VD |
1990 | } |
1991 | ||
da5e0494 TG |
1992 | /* |
1993 | * Interface selected by interface index but interface | |
1994 | * name provided implies that a name change has been | |
1995 | * requested. | |
1996 | */ | |
51055be8 | 1997 | if (ifm->ifi_index > 0 && ifname[0]) { |
da5e0494 TG |
1998 | err = dev_change_name(dev, ifname); |
1999 | if (err < 0) | |
0157f60c | 2000 | goto errout; |
90c325e3 | 2001 | status |= DO_SETLINK_MODIFIED; |
1da177e4 LT |
2002 | } |
2003 | ||
0b815a1a SH |
2004 | if (tb[IFLA_IFALIAS]) { |
2005 | err = dev_set_alias(dev, nla_data(tb[IFLA_IFALIAS]), | |
2006 | nla_len(tb[IFLA_IFALIAS])); | |
2007 | if (err < 0) | |
2008 | goto errout; | |
ba998906 | 2009 | status |= DO_SETLINK_NOTIFY; |
0b815a1a SH |
2010 | } |
2011 | ||
da5e0494 TG |
2012 | if (tb[IFLA_BROADCAST]) { |
2013 | nla_memcpy(dev->broadcast, tb[IFLA_BROADCAST], dev->addr_len); | |
e7c3273e | 2014 | call_netdevice_notifiers(NETDEV_CHANGEADDR, dev); |
1da177e4 LT |
2015 | } |
2016 | ||
83b496e9 | 2017 | if (ifm->ifi_flags || ifm->ifi_change) { |
3729d502 | 2018 | err = dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm)); |
5f9021cf JB |
2019 | if (err < 0) |
2020 | goto errout; | |
83b496e9 | 2021 | } |
1da177e4 | 2022 | |
fbaec0ea JP |
2023 | if (tb[IFLA_MASTER]) { |
2024 | err = do_set_master(dev, nla_get_u32(tb[IFLA_MASTER])); | |
2025 | if (err) | |
2026 | goto errout; | |
90c325e3 | 2027 | status |= DO_SETLINK_MODIFIED; |
fbaec0ea JP |
2028 | } |
2029 | ||
9a57247f JP |
2030 | if (tb[IFLA_CARRIER]) { |
2031 | err = dev_change_carrier(dev, nla_get_u8(tb[IFLA_CARRIER])); | |
2032 | if (err) | |
2033 | goto errout; | |
90c325e3 | 2034 | status |= DO_SETLINK_MODIFIED; |
9a57247f JP |
2035 | } |
2036 | ||
5d1180fc ND |
2037 | if (tb[IFLA_TXQLEN]) { |
2038 | unsigned long value = nla_get_u32(tb[IFLA_TXQLEN]); | |
08294a26 JW |
2039 | unsigned long orig_len = dev->tx_queue_len; |
2040 | ||
2041 | if (dev->tx_queue_len ^ value) { | |
2042 | dev->tx_queue_len = value; | |
2043 | err = call_netdevice_notifiers( | |
2044 | NETDEV_CHANGE_TX_QUEUE_LEN, dev); | |
2045 | err = notifier_to_errno(err); | |
2046 | if (err) { | |
2047 | dev->tx_queue_len = orig_len; | |
2048 | goto errout; | |
2049 | } | |
ba998906 | 2050 | status |= DO_SETLINK_NOTIFY; |
08294a26 | 2051 | } |
5d1180fc | 2052 | } |
b00055aa | 2053 | |
da5e0494 | 2054 | if (tb[IFLA_OPERSTATE]) |
93b2d4a2 | 2055 | set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE])); |
b00055aa | 2056 | |
da5e0494 | 2057 | if (tb[IFLA_LINKMODE]) { |
1889b0e7 ND |
2058 | unsigned char value = nla_get_u8(tb[IFLA_LINKMODE]); |
2059 | ||
93b2d4a2 | 2060 | write_lock_bh(&dev_base_lock); |
1889b0e7 | 2061 | if (dev->link_mode ^ value) |
ba998906 | 2062 | status |= DO_SETLINK_NOTIFY; |
1889b0e7 | 2063 | dev->link_mode = value; |
93b2d4a2 | 2064 | write_unlock_bh(&dev_base_lock); |
b00055aa SR |
2065 | } |
2066 | ||
c02db8c6 | 2067 | if (tb[IFLA_VFINFO_LIST]) { |
4f7d2cdf | 2068 | struct nlattr *vfinfo[IFLA_VF_MAX + 1]; |
c02db8c6 CW |
2069 | struct nlattr *attr; |
2070 | int rem; | |
4f7d2cdf | 2071 | |
c02db8c6 | 2072 | nla_for_each_nested(attr, tb[IFLA_VFINFO_LIST], rem) { |
4f7d2cdf DB |
2073 | if (nla_type(attr) != IFLA_VF_INFO || |
2074 | nla_len(attr) < NLA_HDRLEN) { | |
253683bb | 2075 | err = -EINVAL; |
c02db8c6 | 2076 | goto errout; |
253683bb | 2077 | } |
4f7d2cdf DB |
2078 | err = nla_parse_nested(vfinfo, IFLA_VF_MAX, attr, |
2079 | ifla_vf_policy); | |
2080 | if (err < 0) | |
2081 | goto errout; | |
2082 | err = do_setvfinfo(dev, vfinfo); | |
c02db8c6 CW |
2083 | if (err < 0) |
2084 | goto errout; | |
ba998906 | 2085 | status |= DO_SETLINK_NOTIFY; |
c02db8c6 | 2086 | } |
ebc08a6f | 2087 | } |
1da177e4 LT |
2088 | err = 0; |
2089 | ||
57b61080 SF |
2090 | if (tb[IFLA_VF_PORTS]) { |
2091 | struct nlattr *port[IFLA_PORT_MAX+1]; | |
2092 | struct nlattr *attr; | |
2093 | int vf; | |
2094 | int rem; | |
2095 | ||
2096 | err = -EOPNOTSUPP; | |
2097 | if (!ops->ndo_set_vf_port) | |
2098 | goto errout; | |
2099 | ||
2100 | nla_for_each_nested(attr, tb[IFLA_VF_PORTS], rem) { | |
035d210f DB |
2101 | if (nla_type(attr) != IFLA_VF_PORT || |
2102 | nla_len(attr) < NLA_HDRLEN) { | |
2103 | err = -EINVAL; | |
2104 | goto errout; | |
2105 | } | |
2106 | err = nla_parse_nested(port, IFLA_PORT_MAX, attr, | |
2107 | ifla_port_policy); | |
57b61080 SF |
2108 | if (err < 0) |
2109 | goto errout; | |
2110 | if (!port[IFLA_PORT_VF]) { | |
2111 | err = -EOPNOTSUPP; | |
2112 | goto errout; | |
2113 | } | |
2114 | vf = nla_get_u32(port[IFLA_PORT_VF]); | |
2115 | err = ops->ndo_set_vf_port(dev, vf, port); | |
2116 | if (err < 0) | |
2117 | goto errout; | |
ba998906 | 2118 | status |= DO_SETLINK_NOTIFY; |
57b61080 SF |
2119 | } |
2120 | } | |
2121 | err = 0; | |
2122 | ||
2123 | if (tb[IFLA_PORT_SELF]) { | |
2124 | struct nlattr *port[IFLA_PORT_MAX+1]; | |
2125 | ||
2126 | err = nla_parse_nested(port, IFLA_PORT_MAX, | |
2127 | tb[IFLA_PORT_SELF], ifla_port_policy); | |
2128 | if (err < 0) | |
2129 | goto errout; | |
2130 | ||
2131 | err = -EOPNOTSUPP; | |
2132 | if (ops->ndo_set_vf_port) | |
2133 | err = ops->ndo_set_vf_port(dev, PORT_SELF_VF, port); | |
2134 | if (err < 0) | |
2135 | goto errout; | |
ba998906 | 2136 | status |= DO_SETLINK_NOTIFY; |
57b61080 | 2137 | } |
f8ff182c TG |
2138 | |
2139 | if (tb[IFLA_AF_SPEC]) { | |
2140 | struct nlattr *af; | |
2141 | int rem; | |
2142 | ||
2143 | nla_for_each_nested(af, tb[IFLA_AF_SPEC], rem) { | |
2144 | const struct rtnl_af_ops *af_ops; | |
2145 | ||
2146 | if (!(af_ops = rtnl_af_lookup(nla_type(af)))) | |
cf7afbfe | 2147 | BUG(); |
f8ff182c | 2148 | |
cf7afbfe | 2149 | err = af_ops->set_link_af(dev, af); |
f8ff182c TG |
2150 | if (err < 0) |
2151 | goto errout; | |
2152 | ||
ba998906 | 2153 | status |= DO_SETLINK_NOTIFY; |
f8ff182c TG |
2154 | } |
2155 | } | |
57b61080 SF |
2156 | err = 0; |
2157 | ||
88d6378b AK |
2158 | if (tb[IFLA_PROTO_DOWN]) { |
2159 | err = dev_change_proto_down(dev, | |
2160 | nla_get_u8(tb[IFLA_PROTO_DOWN])); | |
2161 | if (err) | |
2162 | goto errout; | |
2163 | status |= DO_SETLINK_NOTIFY; | |
2164 | } | |
2165 | ||
d1fdd913 BB |
2166 | if (tb[IFLA_XDP]) { |
2167 | struct nlattr *xdp[IFLA_XDP_MAX + 1]; | |
85de8576 | 2168 | u32 xdp_flags = 0; |
d1fdd913 BB |
2169 | |
2170 | err = nla_parse_nested(xdp, IFLA_XDP_MAX, tb[IFLA_XDP], | |
2171 | ifla_xdp_policy); | |
2172 | if (err < 0) | |
2173 | goto errout; | |
2174 | ||
262d8625 BB |
2175 | if (xdp[IFLA_XDP_ATTACHED]) { |
2176 | err = -EINVAL; | |
2177 | goto errout; | |
2178 | } | |
85de8576 DB |
2179 | |
2180 | if (xdp[IFLA_XDP_FLAGS]) { | |
2181 | xdp_flags = nla_get_u32(xdp[IFLA_XDP_FLAGS]); | |
2182 | if (xdp_flags & ~XDP_FLAGS_MASK) { | |
2183 | err = -EINVAL; | |
2184 | goto errout; | |
2185 | } | |
2186 | } | |
2187 | ||
d1fdd913 BB |
2188 | if (xdp[IFLA_XDP_FD]) { |
2189 | err = dev_change_xdp_fd(dev, | |
85de8576 DB |
2190 | nla_get_s32(xdp[IFLA_XDP_FD]), |
2191 | xdp_flags); | |
d1fdd913 BB |
2192 | if (err) |
2193 | goto errout; | |
2194 | status |= DO_SETLINK_NOTIFY; | |
2195 | } | |
2196 | } | |
2197 | ||
0157f60c | 2198 | errout: |
ba998906 ND |
2199 | if (status & DO_SETLINK_MODIFIED) { |
2200 | if (status & DO_SETLINK_NOTIFY) | |
2201 | netdev_state_change(dev); | |
2202 | ||
2203 | if (err < 0) | |
2204 | 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", | |
2205 | dev->name); | |
2206 | } | |
da5e0494 | 2207 | |
0157f60c PM |
2208 | return err; |
2209 | } | |
1da177e4 | 2210 | |
661d2967 | 2211 | static int rtnl_setlink(struct sk_buff *skb, struct nlmsghdr *nlh) |
0157f60c | 2212 | { |
3b1e0a65 | 2213 | struct net *net = sock_net(skb->sk); |
0157f60c PM |
2214 | struct ifinfomsg *ifm; |
2215 | struct net_device *dev; | |
2216 | int err; | |
2217 | struct nlattr *tb[IFLA_MAX+1]; | |
2218 | char ifname[IFNAMSIZ]; | |
2219 | ||
2220 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); | |
2221 | if (err < 0) | |
2222 | goto errout; | |
2223 | ||
2224 | if (tb[IFLA_IFNAME]) | |
2225 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
2226 | else | |
2227 | ifname[0] = '\0'; | |
2228 | ||
2229 | err = -EINVAL; | |
2230 | ifm = nlmsg_data(nlh); | |
2231 | if (ifm->ifi_index > 0) | |
a3d12891 | 2232 | dev = __dev_get_by_index(net, ifm->ifi_index); |
0157f60c | 2233 | else if (tb[IFLA_IFNAME]) |
a3d12891 | 2234 | dev = __dev_get_by_name(net, ifname); |
0157f60c PM |
2235 | else |
2236 | goto errout; | |
2237 | ||
2238 | if (dev == NULL) { | |
2239 | err = -ENODEV; | |
2240 | goto errout; | |
2241 | } | |
2242 | ||
e0d087af ED |
2243 | err = validate_linkmsg(dev, tb); |
2244 | if (err < 0) | |
a3d12891 | 2245 | goto errout; |
0157f60c | 2246 | |
90f62cf3 | 2247 | err = do_setlink(skb, dev, ifm, tb, ifname, 0); |
da5e0494 | 2248 | errout: |
1da177e4 LT |
2249 | return err; |
2250 | } | |
2251 | ||
66400d54 WC |
2252 | static int rtnl_group_dellink(const struct net *net, int group) |
2253 | { | |
2254 | struct net_device *dev, *aux; | |
2255 | LIST_HEAD(list_kill); | |
2256 | bool found = false; | |
2257 | ||
2258 | if (!group) | |
2259 | return -EPERM; | |
2260 | ||
2261 | for_each_netdev(net, dev) { | |
2262 | if (dev->group == group) { | |
2263 | const struct rtnl_link_ops *ops; | |
2264 | ||
2265 | found = true; | |
2266 | ops = dev->rtnl_link_ops; | |
2267 | if (!ops || !ops->dellink) | |
2268 | return -EOPNOTSUPP; | |
2269 | } | |
2270 | } | |
2271 | ||
2272 | if (!found) | |
2273 | return -ENODEV; | |
2274 | ||
2275 | for_each_netdev_safe(net, dev, aux) { | |
2276 | if (dev->group == group) { | |
2277 | const struct rtnl_link_ops *ops; | |
2278 | ||
2279 | ops = dev->rtnl_link_ops; | |
2280 | ops->dellink(dev, &list_kill); | |
2281 | } | |
2282 | } | |
2283 | unregister_netdevice_many(&list_kill); | |
2284 | ||
2285 | return 0; | |
2286 | } | |
2287 | ||
614732ea TG |
2288 | int rtnl_delete_link(struct net_device *dev) |
2289 | { | |
2290 | const struct rtnl_link_ops *ops; | |
2291 | LIST_HEAD(list_kill); | |
2292 | ||
2293 | ops = dev->rtnl_link_ops; | |
2294 | if (!ops || !ops->dellink) | |
2295 | return -EOPNOTSUPP; | |
2296 | ||
2297 | ops->dellink(dev, &list_kill); | |
2298 | unregister_netdevice_many(&list_kill); | |
2299 | ||
2300 | return 0; | |
2301 | } | |
2302 | EXPORT_SYMBOL_GPL(rtnl_delete_link); | |
2303 | ||
661d2967 | 2304 | static int rtnl_dellink(struct sk_buff *skb, struct nlmsghdr *nlh) |
38f7b870 | 2305 | { |
3b1e0a65 | 2306 | struct net *net = sock_net(skb->sk); |
38f7b870 PM |
2307 | struct net_device *dev; |
2308 | struct ifinfomsg *ifm; | |
2309 | char ifname[IFNAMSIZ]; | |
2310 | struct nlattr *tb[IFLA_MAX+1]; | |
2311 | int err; | |
2312 | ||
2313 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); | |
2314 | if (err < 0) | |
2315 | return err; | |
2316 | ||
2317 | if (tb[IFLA_IFNAME]) | |
2318 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
2319 | ||
2320 | ifm = nlmsg_data(nlh); | |
2321 | if (ifm->ifi_index > 0) | |
881d966b | 2322 | dev = __dev_get_by_index(net, ifm->ifi_index); |
38f7b870 | 2323 | else if (tb[IFLA_IFNAME]) |
881d966b | 2324 | dev = __dev_get_by_name(net, ifname); |
66400d54 WC |
2325 | else if (tb[IFLA_GROUP]) |
2326 | return rtnl_group_dellink(net, nla_get_u32(tb[IFLA_GROUP])); | |
38f7b870 PM |
2327 | else |
2328 | return -EINVAL; | |
2329 | ||
2330 | if (!dev) | |
2331 | return -ENODEV; | |
2332 | ||
614732ea | 2333 | return rtnl_delete_link(dev); |
38f7b870 PM |
2334 | } |
2335 | ||
3729d502 PM |
2336 | int rtnl_configure_link(struct net_device *dev, const struct ifinfomsg *ifm) |
2337 | { | |
2338 | unsigned int old_flags; | |
2339 | int err; | |
2340 | ||
2341 | old_flags = dev->flags; | |
2342 | if (ifm && (ifm->ifi_flags || ifm->ifi_change)) { | |
2343 | err = __dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm)); | |
2344 | if (err < 0) | |
2345 | return err; | |
2346 | } | |
2347 | ||
2348 | dev->rtnl_link_state = RTNL_LINK_INITIALIZED; | |
3729d502 | 2349 | |
a528c219 | 2350 | __dev_notify_flags(dev, old_flags, ~0U); |
3729d502 PM |
2351 | return 0; |
2352 | } | |
2353 | EXPORT_SYMBOL(rtnl_configure_link); | |
2354 | ||
c0713563 | 2355 | struct net_device *rtnl_create_link(struct net *net, |
78ebb0d0 | 2356 | const char *ifname, unsigned char name_assign_type, |
5517750f | 2357 | const struct rtnl_link_ops *ops, struct nlattr *tb[]) |
e7199288 PE |
2358 | { |
2359 | int err; | |
2360 | struct net_device *dev; | |
d40156aa JP |
2361 | unsigned int num_tx_queues = 1; |
2362 | unsigned int num_rx_queues = 1; | |
e7199288 | 2363 | |
76ff5cc9 JP |
2364 | if (tb[IFLA_NUM_TX_QUEUES]) |
2365 | num_tx_queues = nla_get_u32(tb[IFLA_NUM_TX_QUEUES]); | |
2366 | else if (ops->get_num_tx_queues) | |
d40156aa | 2367 | num_tx_queues = ops->get_num_tx_queues(); |
76ff5cc9 JP |
2368 | |
2369 | if (tb[IFLA_NUM_RX_QUEUES]) | |
2370 | num_rx_queues = nla_get_u32(tb[IFLA_NUM_RX_QUEUES]); | |
2371 | else if (ops->get_num_rx_queues) | |
d40156aa | 2372 | num_rx_queues = ops->get_num_rx_queues(); |
efacb309 | 2373 | |
e7199288 | 2374 | err = -ENOMEM; |
5517750f | 2375 | dev = alloc_netdev_mqs(ops->priv_size, ifname, name_assign_type, |
c835a677 | 2376 | ops->setup, num_tx_queues, num_rx_queues); |
e7199288 PE |
2377 | if (!dev) |
2378 | goto err; | |
2379 | ||
81adee47 EB |
2380 | dev_net_set(dev, net); |
2381 | dev->rtnl_link_ops = ops; | |
3729d502 | 2382 | dev->rtnl_link_state = RTNL_LINK_INITIALIZING; |
81adee47 | 2383 | |
e7199288 PE |
2384 | if (tb[IFLA_MTU]) |
2385 | dev->mtu = nla_get_u32(tb[IFLA_MTU]); | |
2afb9b53 | 2386 | if (tb[IFLA_ADDRESS]) { |
e7199288 PE |
2387 | memcpy(dev->dev_addr, nla_data(tb[IFLA_ADDRESS]), |
2388 | nla_len(tb[IFLA_ADDRESS])); | |
2afb9b53 JP |
2389 | dev->addr_assign_type = NET_ADDR_SET; |
2390 | } | |
e7199288 PE |
2391 | if (tb[IFLA_BROADCAST]) |
2392 | memcpy(dev->broadcast, nla_data(tb[IFLA_BROADCAST]), | |
2393 | nla_len(tb[IFLA_BROADCAST])); | |
2394 | if (tb[IFLA_TXQLEN]) | |
2395 | dev->tx_queue_len = nla_get_u32(tb[IFLA_TXQLEN]); | |
2396 | if (tb[IFLA_OPERSTATE]) | |
93b2d4a2 | 2397 | set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE])); |
e7199288 PE |
2398 | if (tb[IFLA_LINKMODE]) |
2399 | dev->link_mode = nla_get_u8(tb[IFLA_LINKMODE]); | |
ffa934f1 PM |
2400 | if (tb[IFLA_GROUP]) |
2401 | dev_set_group(dev, nla_get_u32(tb[IFLA_GROUP])); | |
e7199288 PE |
2402 | |
2403 | return dev; | |
2404 | ||
e7199288 PE |
2405 | err: |
2406 | return ERR_PTR(err); | |
2407 | } | |
e0d087af | 2408 | EXPORT_SYMBOL(rtnl_create_link); |
e7199288 | 2409 | |
90f62cf3 EB |
2410 | static int rtnl_group_changelink(const struct sk_buff *skb, |
2411 | struct net *net, int group, | |
e7ed828f VD |
2412 | struct ifinfomsg *ifm, |
2413 | struct nlattr **tb) | |
2414 | { | |
d079535d | 2415 | struct net_device *dev, *aux; |
e7ed828f VD |
2416 | int err; |
2417 | ||
d079535d | 2418 | for_each_netdev_safe(net, dev, aux) { |
e7ed828f | 2419 | if (dev->group == group) { |
90f62cf3 | 2420 | err = do_setlink(skb, dev, ifm, tb, NULL, 0); |
e7ed828f VD |
2421 | if (err < 0) |
2422 | return err; | |
2423 | } | |
2424 | } | |
2425 | ||
2426 | return 0; | |
2427 | } | |
2428 | ||
661d2967 | 2429 | static int rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh) |
38f7b870 | 2430 | { |
3b1e0a65 | 2431 | struct net *net = sock_net(skb->sk); |
38f7b870 | 2432 | const struct rtnl_link_ops *ops; |
ba7d49b1 | 2433 | const struct rtnl_link_ops *m_ops = NULL; |
38f7b870 | 2434 | struct net_device *dev; |
ba7d49b1 | 2435 | struct net_device *master_dev = NULL; |
38f7b870 PM |
2436 | struct ifinfomsg *ifm; |
2437 | char kind[MODULE_NAME_LEN]; | |
2438 | char ifname[IFNAMSIZ]; | |
2439 | struct nlattr *tb[IFLA_MAX+1]; | |
2440 | struct nlattr *linkinfo[IFLA_INFO_MAX+1]; | |
5517750f | 2441 | unsigned char name_assign_type = NET_NAME_USER; |
38f7b870 PM |
2442 | int err; |
2443 | ||
95a5afca | 2444 | #ifdef CONFIG_MODULES |
38f7b870 | 2445 | replay: |
8072f085 | 2446 | #endif |
38f7b870 PM |
2447 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); |
2448 | if (err < 0) | |
2449 | return err; | |
2450 | ||
2451 | if (tb[IFLA_IFNAME]) | |
2452 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
2453 | else | |
2454 | ifname[0] = '\0'; | |
2455 | ||
2456 | ifm = nlmsg_data(nlh); | |
2457 | if (ifm->ifi_index > 0) | |
881d966b | 2458 | dev = __dev_get_by_index(net, ifm->ifi_index); |
e7ed828f VD |
2459 | else { |
2460 | if (ifname[0]) | |
2461 | dev = __dev_get_by_name(net, ifname); | |
e7ed828f VD |
2462 | else |
2463 | dev = NULL; | |
2464 | } | |
38f7b870 | 2465 | |
ba7d49b1 JP |
2466 | if (dev) { |
2467 | master_dev = netdev_master_upper_dev_get(dev); | |
2468 | if (master_dev) | |
2469 | m_ops = master_dev->rtnl_link_ops; | |
2470 | } | |
2471 | ||
e0d087af ED |
2472 | err = validate_linkmsg(dev, tb); |
2473 | if (err < 0) | |
1840bb13 TG |
2474 | return err; |
2475 | ||
38f7b870 PM |
2476 | if (tb[IFLA_LINKINFO]) { |
2477 | err = nla_parse_nested(linkinfo, IFLA_INFO_MAX, | |
2478 | tb[IFLA_LINKINFO], ifla_info_policy); | |
2479 | if (err < 0) | |
2480 | return err; | |
2481 | } else | |
2482 | memset(linkinfo, 0, sizeof(linkinfo)); | |
2483 | ||
2484 | if (linkinfo[IFLA_INFO_KIND]) { | |
2485 | nla_strlcpy(kind, linkinfo[IFLA_INFO_KIND], sizeof(kind)); | |
2486 | ops = rtnl_link_ops_get(kind); | |
2487 | } else { | |
2488 | kind[0] = '\0'; | |
2489 | ops = NULL; | |
2490 | } | |
2491 | ||
2492 | if (1) { | |
4e10fd5b SL |
2493 | struct nlattr *attr[ops ? ops->maxtype + 1 : 1]; |
2494 | struct nlattr *slave_attr[m_ops ? m_ops->slave_maxtype + 1 : 1]; | |
ba7d49b1 JP |
2495 | struct nlattr **data = NULL; |
2496 | struct nlattr **slave_data = NULL; | |
317f4810 | 2497 | struct net *dest_net, *link_net = NULL; |
38f7b870 PM |
2498 | |
2499 | if (ops) { | |
2500 | if (ops->maxtype && linkinfo[IFLA_INFO_DATA]) { | |
2501 | err = nla_parse_nested(attr, ops->maxtype, | |
2502 | linkinfo[IFLA_INFO_DATA], | |
2503 | ops->policy); | |
2504 | if (err < 0) | |
2505 | return err; | |
2506 | data = attr; | |
2507 | } | |
2508 | if (ops->validate) { | |
2509 | err = ops->validate(tb, data); | |
2510 | if (err < 0) | |
2511 | return err; | |
2512 | } | |
2513 | } | |
2514 | ||
ba7d49b1 JP |
2515 | if (m_ops) { |
2516 | if (m_ops->slave_maxtype && | |
2517 | linkinfo[IFLA_INFO_SLAVE_DATA]) { | |
2518 | err = nla_parse_nested(slave_attr, | |
2519 | m_ops->slave_maxtype, | |
2520 | linkinfo[IFLA_INFO_SLAVE_DATA], | |
2521 | m_ops->slave_policy); | |
2522 | if (err < 0) | |
2523 | return err; | |
2524 | slave_data = slave_attr; | |
2525 | } | |
2526 | if (m_ops->slave_validate) { | |
2527 | err = m_ops->slave_validate(tb, slave_data); | |
2528 | if (err < 0) | |
2529 | return err; | |
2530 | } | |
2531 | } | |
2532 | ||
38f7b870 | 2533 | if (dev) { |
90c325e3 | 2534 | int status = 0; |
38f7b870 PM |
2535 | |
2536 | if (nlh->nlmsg_flags & NLM_F_EXCL) | |
2537 | return -EEXIST; | |
2538 | if (nlh->nlmsg_flags & NLM_F_REPLACE) | |
2539 | return -EOPNOTSUPP; | |
2540 | ||
2541 | if (linkinfo[IFLA_INFO_DATA]) { | |
2542 | if (!ops || ops != dev->rtnl_link_ops || | |
2543 | !ops->changelink) | |
2544 | return -EOPNOTSUPP; | |
2545 | ||
2546 | err = ops->changelink(dev, tb, data); | |
2547 | if (err < 0) | |
2548 | return err; | |
ba998906 | 2549 | status |= DO_SETLINK_NOTIFY; |
38f7b870 PM |
2550 | } |
2551 | ||
ba7d49b1 JP |
2552 | if (linkinfo[IFLA_INFO_SLAVE_DATA]) { |
2553 | if (!m_ops || !m_ops->slave_changelink) | |
2554 | return -EOPNOTSUPP; | |
2555 | ||
2556 | err = m_ops->slave_changelink(master_dev, dev, | |
2557 | tb, slave_data); | |
2558 | if (err < 0) | |
2559 | return err; | |
ba998906 | 2560 | status |= DO_SETLINK_NOTIFY; |
ba7d49b1 JP |
2561 | } |
2562 | ||
90c325e3 | 2563 | return do_setlink(skb, dev, ifm, tb, ifname, status); |
38f7b870 PM |
2564 | } |
2565 | ||
ffa934f1 PM |
2566 | if (!(nlh->nlmsg_flags & NLM_F_CREATE)) { |
2567 | if (ifm->ifi_index == 0 && tb[IFLA_GROUP]) | |
90f62cf3 | 2568 | return rtnl_group_changelink(skb, net, |
ffa934f1 PM |
2569 | nla_get_u32(tb[IFLA_GROUP]), |
2570 | ifm, tb); | |
38f7b870 | 2571 | return -ENODEV; |
ffa934f1 | 2572 | } |
38f7b870 | 2573 | |
0e06877c | 2574 | if (tb[IFLA_MAP] || tb[IFLA_MASTER] || tb[IFLA_PROTINFO]) |
38f7b870 PM |
2575 | return -EOPNOTSUPP; |
2576 | ||
2577 | if (!ops) { | |
95a5afca | 2578 | #ifdef CONFIG_MODULES |
38f7b870 PM |
2579 | if (kind[0]) { |
2580 | __rtnl_unlock(); | |
2581 | request_module("rtnl-link-%s", kind); | |
2582 | rtnl_lock(); | |
2583 | ops = rtnl_link_ops_get(kind); | |
2584 | if (ops) | |
2585 | goto replay; | |
2586 | } | |
2587 | #endif | |
2588 | return -EOPNOTSUPP; | |
2589 | } | |
2590 | ||
b0ab2fab JP |
2591 | if (!ops->setup) |
2592 | return -EOPNOTSUPP; | |
2593 | ||
5517750f | 2594 | if (!ifname[0]) { |
38f7b870 | 2595 | snprintf(ifname, IFNAMSIZ, "%s%%d", ops->kind); |
5517750f TG |
2596 | name_assign_type = NET_NAME_ENUM; |
2597 | } | |
e7199288 | 2598 | |
81adee47 | 2599 | dest_net = rtnl_link_get_net(net, tb); |
13ad1774 EB |
2600 | if (IS_ERR(dest_net)) |
2601 | return PTR_ERR(dest_net); | |
2602 | ||
505ce415 EB |
2603 | err = -EPERM; |
2604 | if (!netlink_ns_capable(skb, dest_net->user_ns, CAP_NET_ADMIN)) | |
2605 | goto out; | |
2606 | ||
317f4810 ND |
2607 | if (tb[IFLA_LINK_NETNSID]) { |
2608 | int id = nla_get_s32(tb[IFLA_LINK_NETNSID]); | |
2609 | ||
2610 | link_net = get_net_ns_by_id(dest_net, id); | |
2611 | if (!link_net) { | |
2612 | err = -EINVAL; | |
2613 | goto out; | |
2614 | } | |
06615bed EB |
2615 | err = -EPERM; |
2616 | if (!netlink_ns_capable(skb, link_net->user_ns, CAP_NET_ADMIN)) | |
2617 | goto out; | |
317f4810 ND |
2618 | } |
2619 | ||
2620 | dev = rtnl_create_link(link_net ? : dest_net, ifname, | |
2621 | name_assign_type, ops, tb); | |
9c7dafbf | 2622 | if (IS_ERR(dev)) { |
e7199288 | 2623 | err = PTR_ERR(dev); |
9c7dafbf PE |
2624 | goto out; |
2625 | } | |
2626 | ||
2627 | dev->ifindex = ifm->ifi_index; | |
2628 | ||
0e0eee24 | 2629 | if (ops->newlink) { |
7b4ce694 | 2630 | err = ops->newlink(link_net ? : net, dev, tb, data); |
0e0eee24 | 2631 | /* Drivers should call free_netdev() in ->destructor |
e51fb152 CW |
2632 | * and unregister it on failure after registration |
2633 | * so that device could be finally freed in rtnl_unlock. | |
0e0eee24 | 2634 | */ |
e51fb152 CW |
2635 | if (err < 0) { |
2636 | /* If device is not registered at all, free it now */ | |
2637 | if (dev->reg_state == NETREG_UNINITIALIZED) | |
2638 | free_netdev(dev); | |
0e0eee24 | 2639 | goto out; |
e51fb152 | 2640 | } |
0e0eee24 | 2641 | } else { |
2d85cba2 | 2642 | err = register_netdevice(dev); |
0e0eee24 CW |
2643 | if (err < 0) { |
2644 | free_netdev(dev); | |
2645 | goto out; | |
2646 | } | |
fce9b9be | 2647 | } |
3729d502 | 2648 | err = rtnl_configure_link(dev, ifm); |
43638900 DM |
2649 | if (err < 0) |
2650 | goto out_unregister; | |
bdef279b | 2651 | if (link_net) { |
317f4810 | 2652 | err = dev_change_net_namespace(dev, dest_net, ifname); |
bdef279b | 2653 | if (err < 0) |
43638900 | 2654 | goto out_unregister; |
bdef279b | 2655 | } |
3729d502 | 2656 | out: |
317f4810 ND |
2657 | if (link_net) |
2658 | put_net(link_net); | |
81adee47 | 2659 | put_net(dest_net); |
38f7b870 | 2660 | return err; |
43638900 DM |
2661 | out_unregister: |
2662 | if (ops->newlink) { | |
2663 | LIST_HEAD(list_kill); | |
2664 | ||
2665 | ops->dellink(dev, &list_kill); | |
2666 | unregister_netdevice_many(&list_kill); | |
2667 | } else { | |
2668 | unregister_netdevice(dev); | |
2669 | } | |
2670 | goto out; | |
38f7b870 PM |
2671 | } |
2672 | } | |
2673 | ||
661d2967 | 2674 | static int rtnl_getlink(struct sk_buff *skb, struct nlmsghdr* nlh) |
711e2c33 | 2675 | { |
3b1e0a65 | 2676 | struct net *net = sock_net(skb->sk); |
b60c5115 | 2677 | struct ifinfomsg *ifm; |
a3d12891 | 2678 | char ifname[IFNAMSIZ]; |
b60c5115 TG |
2679 | struct nlattr *tb[IFLA_MAX+1]; |
2680 | struct net_device *dev = NULL; | |
2681 | struct sk_buff *nskb; | |
339bf98f | 2682 | int err; |
115c9b81 | 2683 | u32 ext_filter_mask = 0; |
711e2c33 | 2684 | |
b60c5115 TG |
2685 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); |
2686 | if (err < 0) | |
9918f230 | 2687 | return err; |
b60c5115 | 2688 | |
a3d12891 ED |
2689 | if (tb[IFLA_IFNAME]) |
2690 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
2691 | ||
115c9b81 GR |
2692 | if (tb[IFLA_EXT_MASK]) |
2693 | ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]); | |
2694 | ||
b60c5115 | 2695 | ifm = nlmsg_data(nlh); |
a3d12891 ED |
2696 | if (ifm->ifi_index > 0) |
2697 | dev = __dev_get_by_index(net, ifm->ifi_index); | |
2698 | else if (tb[IFLA_IFNAME]) | |
2699 | dev = __dev_get_by_name(net, ifname); | |
2700 | else | |
711e2c33 | 2701 | return -EINVAL; |
711e2c33 | 2702 | |
a3d12891 ED |
2703 | if (dev == NULL) |
2704 | return -ENODEV; | |
2705 | ||
115c9b81 | 2706 | nskb = nlmsg_new(if_nlmsg_size(dev, ext_filter_mask), GFP_KERNEL); |
a3d12891 ED |
2707 | if (nskb == NULL) |
2708 | return -ENOBUFS; | |
b60c5115 | 2709 | |
15e47304 | 2710 | err = rtnl_fill_ifinfo(nskb, dev, RTM_NEWLINK, NETLINK_CB(skb).portid, |
115c9b81 | 2711 | nlh->nlmsg_seq, 0, 0, ext_filter_mask); |
26932566 PM |
2712 | if (err < 0) { |
2713 | /* -EMSGSIZE implies BUG in if_nlmsg_size */ | |
2714 | WARN_ON(err == -EMSGSIZE); | |
2715 | kfree_skb(nskb); | |
a3d12891 | 2716 | } else |
15e47304 | 2717 | err = rtnl_unicast(nskb, net, NETLINK_CB(skb).portid); |
711e2c33 | 2718 | |
b60c5115 | 2719 | return err; |
711e2c33 | 2720 | } |
711e2c33 | 2721 | |
115c9b81 | 2722 | static u16 rtnl_calcit(struct sk_buff *skb, struct nlmsghdr *nlh) |
c7ac8679 | 2723 | { |
115c9b81 GR |
2724 | struct net *net = sock_net(skb->sk); |
2725 | struct net_device *dev; | |
2726 | struct nlattr *tb[IFLA_MAX+1]; | |
2727 | u32 ext_filter_mask = 0; | |
2728 | u16 min_ifinfo_dump_size = 0; | |
e5eca6d4 MS |
2729 | int hdrlen; |
2730 | ||
2731 | /* Same kernel<->userspace interface hack as in rtnl_dump_ifinfo. */ | |
2732 | hdrlen = nlmsg_len(nlh) < sizeof(struct ifinfomsg) ? | |
2733 | sizeof(struct rtgenmsg) : sizeof(struct ifinfomsg); | |
115c9b81 | 2734 | |
e5eca6d4 | 2735 | if (nlmsg_parse(nlh, hdrlen, tb, IFLA_MAX, ifla_policy) >= 0) { |
a4b64fbe ED |
2736 | if (tb[IFLA_EXT_MASK]) |
2737 | ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]); | |
2738 | } | |
115c9b81 GR |
2739 | |
2740 | if (!ext_filter_mask) | |
2741 | return NLMSG_GOODSIZE; | |
2742 | /* | |
2743 | * traverse the list of net devices and compute the minimum | |
2744 | * buffer size based upon the filter mask. | |
2745 | */ | |
2746 | list_for_each_entry(dev, &net->dev_base_head, dev_list) { | |
2747 | min_ifinfo_dump_size = max_t(u16, min_ifinfo_dump_size, | |
2748 | if_nlmsg_size(dev, | |
2749 | ext_filter_mask)); | |
2750 | } | |
2751 | ||
93af2056 | 2752 | return nlmsg_total_size(min_ifinfo_dump_size); |
c7ac8679 GR |
2753 | } |
2754 | ||
42bad1da | 2755 | static int rtnl_dump_all(struct sk_buff *skb, struct netlink_callback *cb) |
1da177e4 LT |
2756 | { |
2757 | int idx; | |
2758 | int s_idx = cb->family; | |
2759 | ||
2760 | if (s_idx == 0) | |
2761 | s_idx = 1; | |
25239cee | 2762 | for (idx = 1; idx <= RTNL_FAMILY_MAX; idx++) { |
1da177e4 LT |
2763 | int type = cb->nlh->nlmsg_type-RTM_BASE; |
2764 | if (idx < s_idx || idx == PF_PACKET) | |
2765 | continue; | |
e2849863 TG |
2766 | if (rtnl_msg_handlers[idx] == NULL || |
2767 | rtnl_msg_handlers[idx][type].dumpit == NULL) | |
1da177e4 | 2768 | continue; |
0465277f | 2769 | if (idx > s_idx) { |
1da177e4 | 2770 | memset(&cb->args[0], 0, sizeof(cb->args)); |
0465277f ND |
2771 | cb->prev_seq = 0; |
2772 | cb->seq = 0; | |
2773 | } | |
e2849863 | 2774 | if (rtnl_msg_handlers[idx][type].dumpit(skb, cb)) |
1da177e4 LT |
2775 | break; |
2776 | } | |
2777 | cb->family = idx; | |
2778 | ||
2779 | return skb->len; | |
2780 | } | |
2781 | ||
395eea6c MB |
2782 | struct sk_buff *rtmsg_ifinfo_build_skb(int type, struct net_device *dev, |
2783 | unsigned int change, gfp_t flags) | |
1da177e4 | 2784 | { |
c346dca1 | 2785 | struct net *net = dev_net(dev); |
1da177e4 | 2786 | struct sk_buff *skb; |
0ec6d3f4 | 2787 | int err = -ENOBUFS; |
c7ac8679 | 2788 | size_t if_info_size; |
1da177e4 | 2789 | |
7f294054 | 2790 | skb = nlmsg_new((if_info_size = if_nlmsg_size(dev, 0)), flags); |
0ec6d3f4 TG |
2791 | if (skb == NULL) |
2792 | goto errout; | |
1da177e4 | 2793 | |
115c9b81 | 2794 | err = rtnl_fill_ifinfo(skb, dev, type, 0, 0, change, 0, 0); |
26932566 PM |
2795 | if (err < 0) { |
2796 | /* -EMSGSIZE implies BUG in if_nlmsg_size() */ | |
2797 | WARN_ON(err == -EMSGSIZE); | |
2798 | kfree_skb(skb); | |
2799 | goto errout; | |
2800 | } | |
395eea6c | 2801 | return skb; |
0ec6d3f4 TG |
2802 | errout: |
2803 | if (err < 0) | |
4b3da706 | 2804 | rtnl_set_sk_err(net, RTNLGRP_LINK, err); |
395eea6c MB |
2805 | return NULL; |
2806 | } | |
2807 | ||
2808 | void rtmsg_ifinfo_send(struct sk_buff *skb, struct net_device *dev, gfp_t flags) | |
2809 | { | |
2810 | struct net *net = dev_net(dev); | |
2811 | ||
2812 | rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, flags); | |
2813 | } | |
2814 | ||
2815 | void rtmsg_ifinfo(int type, struct net_device *dev, unsigned int change, | |
2816 | gfp_t flags) | |
2817 | { | |
2818 | struct sk_buff *skb; | |
2819 | ||
ed2a80ab ND |
2820 | if (dev->reg_state != NETREG_REGISTERED) |
2821 | return; | |
2822 | ||
395eea6c MB |
2823 | skb = rtmsg_ifinfo_build_skb(type, dev, change, flags); |
2824 | if (skb) | |
2825 | rtmsg_ifinfo_send(skb, dev, flags); | |
1da177e4 | 2826 | } |
471cb5a3 | 2827 | EXPORT_SYMBOL(rtmsg_ifinfo); |
1da177e4 | 2828 | |
d83b0603 JF |
2829 | static int nlmsg_populate_fdb_fill(struct sk_buff *skb, |
2830 | struct net_device *dev, | |
1e53d5bb | 2831 | u8 *addr, u16 vid, u32 pid, u32 seq, |
1c104a6b | 2832 | int type, unsigned int flags, |
b3379041 | 2833 | int nlflags, u16 ndm_state) |
d83b0603 JF |
2834 | { |
2835 | struct nlmsghdr *nlh; | |
2836 | struct ndmsg *ndm; | |
2837 | ||
1c104a6b | 2838 | nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ndm), nlflags); |
d83b0603 JF |
2839 | if (!nlh) |
2840 | return -EMSGSIZE; | |
2841 | ||
2842 | ndm = nlmsg_data(nlh); | |
2843 | ndm->ndm_family = AF_BRIDGE; | |
2844 | ndm->ndm_pad1 = 0; | |
2845 | ndm->ndm_pad2 = 0; | |
2846 | ndm->ndm_flags = flags; | |
2847 | ndm->ndm_type = 0; | |
2848 | ndm->ndm_ifindex = dev->ifindex; | |
b3379041 | 2849 | ndm->ndm_state = ndm_state; |
d83b0603 JF |
2850 | |
2851 | if (nla_put(skb, NDA_LLADDR, ETH_ALEN, addr)) | |
2852 | goto nla_put_failure; | |
1e53d5bb HS |
2853 | if (vid) |
2854 | if (nla_put(skb, NDA_VLAN, sizeof(u16), &vid)) | |
2855 | goto nla_put_failure; | |
d83b0603 | 2856 | |
053c095a JB |
2857 | nlmsg_end(skb, nlh); |
2858 | return 0; | |
d83b0603 JF |
2859 | |
2860 | nla_put_failure: | |
2861 | nlmsg_cancel(skb, nlh); | |
2862 | return -EMSGSIZE; | |
2863 | } | |
2864 | ||
3ff661c3 JF |
2865 | static inline size_t rtnl_fdb_nlmsg_size(void) |
2866 | { | |
f82ef3e1 SD |
2867 | return NLMSG_ALIGN(sizeof(struct ndmsg)) + |
2868 | nla_total_size(ETH_ALEN) + /* NDA_LLADDR */ | |
2869 | nla_total_size(sizeof(u16)) + /* NDA_VLAN */ | |
2870 | 0; | |
3ff661c3 JF |
2871 | } |
2872 | ||
b3379041 HS |
2873 | static void rtnl_fdb_notify(struct net_device *dev, u8 *addr, u16 vid, int type, |
2874 | u16 ndm_state) | |
3ff661c3 JF |
2875 | { |
2876 | struct net *net = dev_net(dev); | |
2877 | struct sk_buff *skb; | |
2878 | int err = -ENOBUFS; | |
2879 | ||
2880 | skb = nlmsg_new(rtnl_fdb_nlmsg_size(), GFP_ATOMIC); | |
2881 | if (!skb) | |
2882 | goto errout; | |
2883 | ||
1e53d5bb | 2884 | err = nlmsg_populate_fdb_fill(skb, dev, addr, vid, |
b3379041 | 2885 | 0, 0, type, NTF_SELF, 0, ndm_state); |
3ff661c3 JF |
2886 | if (err < 0) { |
2887 | kfree_skb(skb); | |
2888 | goto errout; | |
2889 | } | |
2890 | ||
2891 | rtnl_notify(skb, net, 0, RTNLGRP_NEIGH, NULL, GFP_ATOMIC); | |
2892 | return; | |
2893 | errout: | |
2894 | rtnl_set_sk_err(net, RTNLGRP_NEIGH, err); | |
2895 | } | |
2896 | ||
090096bf VY |
2897 | /** |
2898 | * ndo_dflt_fdb_add - default netdevice operation to add an FDB entry | |
2899 | */ | |
2900 | int ndo_dflt_fdb_add(struct ndmsg *ndm, | |
2901 | struct nlattr *tb[], | |
2902 | struct net_device *dev, | |
f6f6424b | 2903 | const unsigned char *addr, u16 vid, |
090096bf VY |
2904 | u16 flags) |
2905 | { | |
2906 | int err = -EINVAL; | |
2907 | ||
2908 | /* If aging addresses are supported device will need to | |
2909 | * implement its own handler for this. | |
2910 | */ | |
2911 | if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) { | |
2912 | pr_info("%s: FDB only supports static addresses\n", dev->name); | |
2913 | return err; | |
2914 | } | |
2915 | ||
65891fea OG |
2916 | if (vid) { |
2917 | pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name); | |
2918 | return err; | |
2919 | } | |
2920 | ||
090096bf VY |
2921 | if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr)) |
2922 | err = dev_uc_add_excl(dev, addr); | |
2923 | else if (is_multicast_ether_addr(addr)) | |
2924 | err = dev_mc_add_excl(dev, addr); | |
2925 | ||
2926 | /* Only return duplicate errors if NLM_F_EXCL is set */ | |
2927 | if (err == -EEXIST && !(flags & NLM_F_EXCL)) | |
2928 | err = 0; | |
2929 | ||
2930 | return err; | |
2931 | } | |
2932 | EXPORT_SYMBOL(ndo_dflt_fdb_add); | |
2933 | ||
f6f6424b JP |
2934 | static int fdb_vid_parse(struct nlattr *vlan_attr, u16 *p_vid) |
2935 | { | |
2936 | u16 vid = 0; | |
2937 | ||
2938 | if (vlan_attr) { | |
2939 | if (nla_len(vlan_attr) != sizeof(u16)) { | |
2940 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid vlan\n"); | |
2941 | return -EINVAL; | |
2942 | } | |
2943 | ||
2944 | vid = nla_get_u16(vlan_attr); | |
2945 | ||
2946 | if (!vid || vid >= VLAN_VID_MASK) { | |
2947 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid vlan id %d\n", | |
2948 | vid); | |
2949 | return -EINVAL; | |
2950 | } | |
2951 | } | |
2952 | *p_vid = vid; | |
2953 | return 0; | |
2954 | } | |
2955 | ||
661d2967 | 2956 | static int rtnl_fdb_add(struct sk_buff *skb, struct nlmsghdr *nlh) |
77162022 JF |
2957 | { |
2958 | struct net *net = sock_net(skb->sk); | |
77162022 JF |
2959 | struct ndmsg *ndm; |
2960 | struct nlattr *tb[NDA_MAX+1]; | |
2961 | struct net_device *dev; | |
2962 | u8 *addr; | |
f6f6424b | 2963 | u16 vid; |
77162022 JF |
2964 | int err; |
2965 | ||
2966 | err = nlmsg_parse(nlh, sizeof(*ndm), tb, NDA_MAX, NULL); | |
2967 | if (err < 0) | |
2968 | return err; | |
2969 | ||
2970 | ndm = nlmsg_data(nlh); | |
2971 | if (ndm->ndm_ifindex == 0) { | |
2972 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid ifindex\n"); | |
2973 | return -EINVAL; | |
2974 | } | |
2975 | ||
2976 | dev = __dev_get_by_index(net, ndm->ndm_ifindex); | |
2977 | if (dev == NULL) { | |
2978 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with unknown ifindex\n"); | |
2979 | return -ENODEV; | |
2980 | } | |
2981 | ||
2982 | if (!tb[NDA_LLADDR] || nla_len(tb[NDA_LLADDR]) != ETH_ALEN) { | |
2983 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid address\n"); | |
2984 | return -EINVAL; | |
2985 | } | |
2986 | ||
2987 | addr = nla_data(tb[NDA_LLADDR]); | |
77162022 | 2988 | |
f6f6424b JP |
2989 | err = fdb_vid_parse(tb[NDA_VLAN], &vid); |
2990 | if (err) | |
2991 | return err; | |
2992 | ||
77162022 JF |
2993 | err = -EOPNOTSUPP; |
2994 | ||
2995 | /* Support fdb on master device the net/bridge default case */ | |
2996 | if ((!ndm->ndm_flags || ndm->ndm_flags & NTF_MASTER) && | |
2997 | (dev->priv_flags & IFF_BRIDGE_PORT)) { | |
898e5061 JP |
2998 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
2999 | const struct net_device_ops *ops = br_dev->netdev_ops; | |
3000 | ||
f6f6424b JP |
3001 | err = ops->ndo_fdb_add(ndm, tb, dev, addr, vid, |
3002 | nlh->nlmsg_flags); | |
77162022 JF |
3003 | if (err) |
3004 | goto out; | |
3005 | else | |
3006 | ndm->ndm_flags &= ~NTF_MASTER; | |
3007 | } | |
3008 | ||
3009 | /* Embedded bridge, macvlan, and any other device support */ | |
090096bf VY |
3010 | if ((ndm->ndm_flags & NTF_SELF)) { |
3011 | if (dev->netdev_ops->ndo_fdb_add) | |
3012 | err = dev->netdev_ops->ndo_fdb_add(ndm, tb, dev, addr, | |
f6f6424b | 3013 | vid, |
090096bf VY |
3014 | nlh->nlmsg_flags); |
3015 | else | |
f6f6424b | 3016 | err = ndo_dflt_fdb_add(ndm, tb, dev, addr, vid, |
090096bf | 3017 | nlh->nlmsg_flags); |
77162022 | 3018 | |
3ff661c3 | 3019 | if (!err) { |
b3379041 HS |
3020 | rtnl_fdb_notify(dev, addr, vid, RTM_NEWNEIGH, |
3021 | ndm->ndm_state); | |
77162022 | 3022 | ndm->ndm_flags &= ~NTF_SELF; |
3ff661c3 | 3023 | } |
77162022 JF |
3024 | } |
3025 | out: | |
3026 | return err; | |
3027 | } | |
3028 | ||
090096bf VY |
3029 | /** |
3030 | * ndo_dflt_fdb_del - default netdevice operation to delete an FDB entry | |
3031 | */ | |
3032 | int ndo_dflt_fdb_del(struct ndmsg *ndm, | |
3033 | struct nlattr *tb[], | |
3034 | struct net_device *dev, | |
f6f6424b | 3035 | const unsigned char *addr, u16 vid) |
090096bf | 3036 | { |
c8a89c4a | 3037 | int err = -EINVAL; |
090096bf VY |
3038 | |
3039 | /* If aging addresses are supported device will need to | |
3040 | * implement its own handler for this. | |
3041 | */ | |
64535993 | 3042 | if (!(ndm->ndm_state & NUD_PERMANENT)) { |
090096bf | 3043 | pr_info("%s: FDB only supports static addresses\n", dev->name); |
c8a89c4a | 3044 | return err; |
090096bf VY |
3045 | } |
3046 | ||
3047 | if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr)) | |
3048 | err = dev_uc_del(dev, addr); | |
3049 | else if (is_multicast_ether_addr(addr)) | |
3050 | err = dev_mc_del(dev, addr); | |
090096bf VY |
3051 | |
3052 | return err; | |
3053 | } | |
3054 | EXPORT_SYMBOL(ndo_dflt_fdb_del); | |
3055 | ||
661d2967 | 3056 | static int rtnl_fdb_del(struct sk_buff *skb, struct nlmsghdr *nlh) |
77162022 JF |
3057 | { |
3058 | struct net *net = sock_net(skb->sk); | |
3059 | struct ndmsg *ndm; | |
1690be63 | 3060 | struct nlattr *tb[NDA_MAX+1]; |
77162022 JF |
3061 | struct net_device *dev; |
3062 | int err = -EINVAL; | |
3063 | __u8 *addr; | |
f6f6424b | 3064 | u16 vid; |
77162022 | 3065 | |
90f62cf3 | 3066 | if (!netlink_capable(skb, CAP_NET_ADMIN)) |
1690be63 VY |
3067 | return -EPERM; |
3068 | ||
3069 | err = nlmsg_parse(nlh, sizeof(*ndm), tb, NDA_MAX, NULL); | |
3070 | if (err < 0) | |
3071 | return err; | |
77162022 JF |
3072 | |
3073 | ndm = nlmsg_data(nlh); | |
3074 | if (ndm->ndm_ifindex == 0) { | |
3075 | pr_info("PF_BRIDGE: RTM_DELNEIGH with invalid ifindex\n"); | |
3076 | return -EINVAL; | |
3077 | } | |
3078 | ||
3079 | dev = __dev_get_by_index(net, ndm->ndm_ifindex); | |
3080 | if (dev == NULL) { | |
3081 | pr_info("PF_BRIDGE: RTM_DELNEIGH with unknown ifindex\n"); | |
3082 | return -ENODEV; | |
3083 | } | |
3084 | ||
1690be63 VY |
3085 | if (!tb[NDA_LLADDR] || nla_len(tb[NDA_LLADDR]) != ETH_ALEN) { |
3086 | pr_info("PF_BRIDGE: RTM_DELNEIGH with invalid address\n"); | |
3087 | return -EINVAL; | |
3088 | } | |
3089 | ||
3090 | addr = nla_data(tb[NDA_LLADDR]); | |
77162022 | 3091 | |
f6f6424b JP |
3092 | err = fdb_vid_parse(tb[NDA_VLAN], &vid); |
3093 | if (err) | |
3094 | return err; | |
3095 | ||
77162022 JF |
3096 | err = -EOPNOTSUPP; |
3097 | ||
3098 | /* Support fdb on master device the net/bridge default case */ | |
3099 | if ((!ndm->ndm_flags || ndm->ndm_flags & NTF_MASTER) && | |
3100 | (dev->priv_flags & IFF_BRIDGE_PORT)) { | |
898e5061 JP |
3101 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
3102 | const struct net_device_ops *ops = br_dev->netdev_ops; | |
77162022 | 3103 | |
898e5061 | 3104 | if (ops->ndo_fdb_del) |
f6f6424b | 3105 | err = ops->ndo_fdb_del(ndm, tb, dev, addr, vid); |
77162022 JF |
3106 | |
3107 | if (err) | |
3108 | goto out; | |
3109 | else | |
3110 | ndm->ndm_flags &= ~NTF_MASTER; | |
3111 | } | |
3112 | ||
3113 | /* Embedded bridge, macvlan, and any other device support */ | |
090096bf VY |
3114 | if (ndm->ndm_flags & NTF_SELF) { |
3115 | if (dev->netdev_ops->ndo_fdb_del) | |
f6f6424b JP |
3116 | err = dev->netdev_ops->ndo_fdb_del(ndm, tb, dev, addr, |
3117 | vid); | |
090096bf | 3118 | else |
f6f6424b | 3119 | err = ndo_dflt_fdb_del(ndm, tb, dev, addr, vid); |
77162022 | 3120 | |
3ff661c3 | 3121 | if (!err) { |
b3379041 HS |
3122 | rtnl_fdb_notify(dev, addr, vid, RTM_DELNEIGH, |
3123 | ndm->ndm_state); | |
77162022 | 3124 | ndm->ndm_flags &= ~NTF_SELF; |
3ff661c3 | 3125 | } |
77162022 JF |
3126 | } |
3127 | out: | |
3128 | return err; | |
3129 | } | |
3130 | ||
d83b0603 JF |
3131 | static int nlmsg_populate_fdb(struct sk_buff *skb, |
3132 | struct netlink_callback *cb, | |
3133 | struct net_device *dev, | |
3134 | int *idx, | |
3135 | struct netdev_hw_addr_list *list) | |
3136 | { | |
3137 | struct netdev_hw_addr *ha; | |
3138 | int err; | |
15e47304 | 3139 | u32 portid, seq; |
d83b0603 | 3140 | |
15e47304 | 3141 | portid = NETLINK_CB(cb->skb).portid; |
d83b0603 JF |
3142 | seq = cb->nlh->nlmsg_seq; |
3143 | ||
3144 | list_for_each_entry(ha, &list->list, list) { | |
d297653d | 3145 | if (*idx < cb->args[2]) |
d83b0603 JF |
3146 | goto skip; |
3147 | ||
1e53d5bb | 3148 | err = nlmsg_populate_fdb_fill(skb, dev, ha->addr, 0, |
a7a558fe | 3149 | portid, seq, |
1c104a6b | 3150 | RTM_NEWNEIGH, NTF_SELF, |
b3379041 | 3151 | NLM_F_MULTI, NUD_PERMANENT); |
d83b0603 JF |
3152 | if (err < 0) |
3153 | return err; | |
3154 | skip: | |
3155 | *idx += 1; | |
3156 | } | |
3157 | return 0; | |
3158 | } | |
3159 | ||
3160 | /** | |
2c53040f | 3161 | * ndo_dflt_fdb_dump - default netdevice operation to dump an FDB table. |
d83b0603 JF |
3162 | * @nlh: netlink message header |
3163 | * @dev: netdevice | |
3164 | * | |
3165 | * Default netdevice operation to dump the existing unicast address list. | |
91f3e7b1 | 3166 | * Returns number of addresses from list put in skb. |
d83b0603 JF |
3167 | */ |
3168 | int ndo_dflt_fdb_dump(struct sk_buff *skb, | |
3169 | struct netlink_callback *cb, | |
3170 | struct net_device *dev, | |
5d5eacb3 | 3171 | struct net_device *filter_dev, |
d297653d | 3172 | int *idx) |
d83b0603 JF |
3173 | { |
3174 | int err; | |
3175 | ||
3176 | netif_addr_lock_bh(dev); | |
d297653d | 3177 | err = nlmsg_populate_fdb(skb, cb, dev, idx, &dev->uc); |
d83b0603 JF |
3178 | if (err) |
3179 | goto out; | |
2934c9db | 3180 | err = nlmsg_populate_fdb(skb, cb, dev, idx, &dev->mc); |
d83b0603 JF |
3181 | out: |
3182 | netif_addr_unlock_bh(dev); | |
d297653d | 3183 | return err; |
d83b0603 JF |
3184 | } |
3185 | EXPORT_SYMBOL(ndo_dflt_fdb_dump); | |
3186 | ||
77162022 JF |
3187 | static int rtnl_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb) |
3188 | { | |
77162022 | 3189 | struct net_device *dev; |
5e6d2435 | 3190 | struct nlattr *tb[IFLA_MAX+1]; |
5e6d2435 JHS |
3191 | struct net_device *br_dev = NULL; |
3192 | const struct net_device_ops *ops = NULL; | |
3193 | const struct net_device_ops *cops = NULL; | |
3194 | struct ifinfomsg *ifm = nlmsg_data(cb->nlh); | |
3195 | struct net *net = sock_net(skb->sk); | |
d297653d | 3196 | struct hlist_head *head; |
5e6d2435 JHS |
3197 | int brport_idx = 0; |
3198 | int br_idx = 0; | |
d297653d RP |
3199 | int h, s_h; |
3200 | int idx = 0, s_idx; | |
3201 | int err = 0; | |
3202 | int fidx = 0; | |
5e6d2435 JHS |
3203 | |
3204 | if (nlmsg_parse(cb->nlh, sizeof(struct ifinfomsg), tb, IFLA_MAX, | |
3205 | ifla_policy) == 0) { | |
3206 | if (tb[IFLA_MASTER]) | |
3207 | br_idx = nla_get_u32(tb[IFLA_MASTER]); | |
3208 | } | |
3209 | ||
3210 | brport_idx = ifm->ifi_index; | |
3211 | ||
3212 | if (br_idx) { | |
3213 | br_dev = __dev_get_by_index(net, br_idx); | |
3214 | if (!br_dev) | |
3215 | return -ENODEV; | |
3216 | ||
3217 | ops = br_dev->netdev_ops; | |
5e6d2435 JHS |
3218 | } |
3219 | ||
d297653d RP |
3220 | s_h = cb->args[0]; |
3221 | s_idx = cb->args[1]; | |
5e6d2435 | 3222 | |
d297653d RP |
3223 | for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) { |
3224 | idx = 0; | |
3225 | head = &net->dev_index_head[h]; | |
3226 | hlist_for_each_entry(dev, head, index_hlist) { | |
5e6d2435 | 3227 | |
d297653d | 3228 | if (brport_idx && (dev->ifindex != brport_idx)) |
5e6d2435 JHS |
3229 | continue; |
3230 | ||
d297653d RP |
3231 | if (!br_idx) { /* user did not specify a specific bridge */ |
3232 | if (dev->priv_flags & IFF_BRIDGE_PORT) { | |
3233 | br_dev = netdev_master_upper_dev_get(dev); | |
3234 | cops = br_dev->netdev_ops; | |
3235 | } | |
3236 | } else { | |
3237 | if (dev != br_dev && | |
3238 | !(dev->priv_flags & IFF_BRIDGE_PORT)) | |
3239 | continue; | |
5e6d2435 | 3240 | |
d297653d RP |
3241 | if (br_dev != netdev_master_upper_dev_get(dev) && |
3242 | !(dev->priv_flags & IFF_EBRIDGE)) | |
3243 | continue; | |
3244 | cops = ops; | |
3245 | } | |
77162022 | 3246 | |
d297653d RP |
3247 | if (idx < s_idx) |
3248 | goto cont; | |
77162022 | 3249 | |
d297653d RP |
3250 | if (dev->priv_flags & IFF_BRIDGE_PORT) { |
3251 | if (cops && cops->ndo_fdb_dump) { | |
3252 | err = cops->ndo_fdb_dump(skb, cb, | |
3253 | br_dev, dev, | |
3254 | &fidx); | |
3255 | if (err == -EMSGSIZE) | |
3256 | goto out; | |
3257 | } | |
3258 | } | |
5e6d2435 | 3259 | |
d297653d RP |
3260 | if (dev->netdev_ops->ndo_fdb_dump) |
3261 | err = dev->netdev_ops->ndo_fdb_dump(skb, cb, | |
3262 | dev, NULL, | |
3263 | &fidx); | |
3264 | else | |
3265 | err = ndo_dflt_fdb_dump(skb, cb, dev, NULL, | |
3266 | &fidx); | |
3267 | if (err == -EMSGSIZE) | |
3268 | goto out; | |
3269 | ||
3270 | cops = NULL; | |
3271 | ||
3272 | /* reset fdb offset to 0 for rest of the interfaces */ | |
3273 | cb->args[2] = 0; | |
3274 | fidx = 0; | |
3275 | cont: | |
3276 | idx++; | |
3277 | } | |
77162022 | 3278 | } |
77162022 | 3279 | |
d297653d RP |
3280 | out: |
3281 | cb->args[0] = h; | |
3282 | cb->args[1] = idx; | |
3283 | cb->args[2] = fidx; | |
3284 | ||
77162022 JF |
3285 | return skb->len; |
3286 | } | |
3287 | ||
2c3c031c SF |
3288 | static int brport_nla_put_flag(struct sk_buff *skb, u32 flags, u32 mask, |
3289 | unsigned int attrnum, unsigned int flag) | |
3290 | { | |
3291 | if (mask & flag) | |
3292 | return nla_put_u8(skb, attrnum, !!(flags & flag)); | |
3293 | return 0; | |
3294 | } | |
3295 | ||
815cccbf | 3296 | int ndo_dflt_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq, |
2c3c031c | 3297 | struct net_device *dev, u16 mode, |
7d4f8d87 SF |
3298 | u32 flags, u32 mask, int nlflags, |
3299 | u32 filter_mask, | |
3300 | int (*vlan_fill)(struct sk_buff *skb, | |
3301 | struct net_device *dev, | |
3302 | u32 filter_mask)) | |
815cccbf JF |
3303 | { |
3304 | struct nlmsghdr *nlh; | |
3305 | struct ifinfomsg *ifm; | |
3306 | struct nlattr *br_afspec; | |
2c3c031c | 3307 | struct nlattr *protinfo; |
815cccbf | 3308 | u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN; |
898e5061 | 3309 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
7d4f8d87 | 3310 | int err = 0; |
815cccbf | 3311 | |
46c264da | 3312 | nlh = nlmsg_put(skb, pid, seq, RTM_NEWLINK, sizeof(*ifm), nlflags); |
815cccbf JF |
3313 | if (nlh == NULL) |
3314 | return -EMSGSIZE; | |
3315 | ||
3316 | ifm = nlmsg_data(nlh); | |
3317 | ifm->ifi_family = AF_BRIDGE; | |
3318 | ifm->__ifi_pad = 0; | |
3319 | ifm->ifi_type = dev->type; | |
3320 | ifm->ifi_index = dev->ifindex; | |
3321 | ifm->ifi_flags = dev_get_flags(dev); | |
3322 | ifm->ifi_change = 0; | |
3323 | ||
3324 | ||
3325 | if (nla_put_string(skb, IFLA_IFNAME, dev->name) || | |
3326 | nla_put_u32(skb, IFLA_MTU, dev->mtu) || | |
3327 | nla_put_u8(skb, IFLA_OPERSTATE, operstate) || | |
898e5061 JP |
3328 | (br_dev && |
3329 | nla_put_u32(skb, IFLA_MASTER, br_dev->ifindex)) || | |
815cccbf JF |
3330 | (dev->addr_len && |
3331 | nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) || | |
a54acb3a ND |
3332 | (dev->ifindex != dev_get_iflink(dev) && |
3333 | nla_put_u32(skb, IFLA_LINK, dev_get_iflink(dev)))) | |
815cccbf JF |
3334 | goto nla_put_failure; |
3335 | ||
3336 | br_afspec = nla_nest_start(skb, IFLA_AF_SPEC); | |
3337 | if (!br_afspec) | |
3338 | goto nla_put_failure; | |
3339 | ||
1d460b98 | 3340 | if (nla_put_u16(skb, IFLA_BRIDGE_FLAGS, BRIDGE_FLAGS_SELF)) { |
815cccbf JF |
3341 | nla_nest_cancel(skb, br_afspec); |
3342 | goto nla_put_failure; | |
3343 | } | |
1d460b98 RP |
3344 | |
3345 | if (mode != BRIDGE_MODE_UNDEF) { | |
3346 | if (nla_put_u16(skb, IFLA_BRIDGE_MODE, mode)) { | |
3347 | nla_nest_cancel(skb, br_afspec); | |
3348 | goto nla_put_failure; | |
3349 | } | |
3350 | } | |
7d4f8d87 SF |
3351 | if (vlan_fill) { |
3352 | err = vlan_fill(skb, dev, filter_mask); | |
3353 | if (err) { | |
3354 | nla_nest_cancel(skb, br_afspec); | |
3355 | goto nla_put_failure; | |
3356 | } | |
3357 | } | |
815cccbf JF |
3358 | nla_nest_end(skb, br_afspec); |
3359 | ||
2c3c031c SF |
3360 | protinfo = nla_nest_start(skb, IFLA_PROTINFO | NLA_F_NESTED); |
3361 | if (!protinfo) | |
3362 | goto nla_put_failure; | |
3363 | ||
3364 | if (brport_nla_put_flag(skb, flags, mask, | |
3365 | IFLA_BRPORT_MODE, BR_HAIRPIN_MODE) || | |
3366 | brport_nla_put_flag(skb, flags, mask, | |
3367 | IFLA_BRPORT_GUARD, BR_BPDU_GUARD) || | |
3368 | brport_nla_put_flag(skb, flags, mask, | |
3369 | IFLA_BRPORT_FAST_LEAVE, | |
3370 | BR_MULTICAST_FAST_LEAVE) || | |
3371 | brport_nla_put_flag(skb, flags, mask, | |
3372 | IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK) || | |
3373 | brport_nla_put_flag(skb, flags, mask, | |
3374 | IFLA_BRPORT_LEARNING, BR_LEARNING) || | |
3375 | brport_nla_put_flag(skb, flags, mask, | |
3376 | IFLA_BRPORT_LEARNING_SYNC, BR_LEARNING_SYNC) || | |
3377 | brport_nla_put_flag(skb, flags, mask, | |
3378 | IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD) || | |
3379 | brport_nla_put_flag(skb, flags, mask, | |
3380 | IFLA_BRPORT_PROXYARP, BR_PROXYARP)) { | |
3381 | nla_nest_cancel(skb, protinfo); | |
3382 | goto nla_put_failure; | |
3383 | } | |
3384 | ||
3385 | nla_nest_end(skb, protinfo); | |
3386 | ||
053c095a JB |
3387 | nlmsg_end(skb, nlh); |
3388 | return 0; | |
815cccbf JF |
3389 | nla_put_failure: |
3390 | nlmsg_cancel(skb, nlh); | |
7d4f8d87 | 3391 | return err ? err : -EMSGSIZE; |
815cccbf | 3392 | } |
7d4f8d87 | 3393 | EXPORT_SYMBOL_GPL(ndo_dflt_bridge_getlink); |
815cccbf | 3394 | |
e5a55a89 JF |
3395 | static int rtnl_bridge_getlink(struct sk_buff *skb, struct netlink_callback *cb) |
3396 | { | |
3397 | struct net *net = sock_net(skb->sk); | |
3398 | struct net_device *dev; | |
3399 | int idx = 0; | |
3400 | u32 portid = NETLINK_CB(cb->skb).portid; | |
3401 | u32 seq = cb->nlh->nlmsg_seq; | |
6cbdceeb | 3402 | u32 filter_mask = 0; |
d64f69b0 | 3403 | int err; |
6cbdceeb | 3404 | |
aa68c20f TG |
3405 | if (nlmsg_len(cb->nlh) > sizeof(struct ifinfomsg)) { |
3406 | struct nlattr *extfilt; | |
3407 | ||
3408 | extfilt = nlmsg_find_attr(cb->nlh, sizeof(struct ifinfomsg), | |
3409 | IFLA_EXT_MASK); | |
3410 | if (extfilt) { | |
3411 | if (nla_len(extfilt) < sizeof(filter_mask)) | |
3412 | return -EINVAL; | |
3413 | ||
3414 | filter_mask = nla_get_u32(extfilt); | |
3415 | } | |
3416 | } | |
e5a55a89 JF |
3417 | |
3418 | rcu_read_lock(); | |
3419 | for_each_netdev_rcu(net, dev) { | |
3420 | const struct net_device_ops *ops = dev->netdev_ops; | |
898e5061 | 3421 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
e5a55a89 | 3422 | |
898e5061 | 3423 | if (br_dev && br_dev->netdev_ops->ndo_bridge_getlink) { |
d64f69b0 RP |
3424 | if (idx >= cb->args[0]) { |
3425 | err = br_dev->netdev_ops->ndo_bridge_getlink( | |
3426 | skb, portid, seq, dev, | |
3427 | filter_mask, NLM_F_MULTI); | |
3428 | if (err < 0 && err != -EOPNOTSUPP) | |
3429 | break; | |
3430 | } | |
25b1e679 | 3431 | idx++; |
e5a55a89 JF |
3432 | } |
3433 | ||
3434 | if (ops->ndo_bridge_getlink) { | |
d64f69b0 RP |
3435 | if (idx >= cb->args[0]) { |
3436 | err = ops->ndo_bridge_getlink(skb, portid, | |
3437 | seq, dev, | |
3438 | filter_mask, | |
3439 | NLM_F_MULTI); | |
3440 | if (err < 0 && err != -EOPNOTSUPP) | |
3441 | break; | |
3442 | } | |
25b1e679 | 3443 | idx++; |
e5a55a89 JF |
3444 | } |
3445 | } | |
3446 | rcu_read_unlock(); | |
3447 | cb->args[0] = idx; | |
3448 | ||
3449 | return skb->len; | |
3450 | } | |
3451 | ||
2469ffd7 JF |
3452 | static inline size_t bridge_nlmsg_size(void) |
3453 | { | |
3454 | return NLMSG_ALIGN(sizeof(struct ifinfomsg)) | |
3455 | + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */ | |
3456 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */ | |
3457 | + nla_total_size(sizeof(u32)) /* IFLA_MASTER */ | |
3458 | + nla_total_size(sizeof(u32)) /* IFLA_MTU */ | |
3459 | + nla_total_size(sizeof(u32)) /* IFLA_LINK */ | |
3460 | + nla_total_size(sizeof(u32)) /* IFLA_OPERSTATE */ | |
3461 | + nla_total_size(sizeof(u8)) /* IFLA_PROTINFO */ | |
3462 | + nla_total_size(sizeof(struct nlattr)) /* IFLA_AF_SPEC */ | |
3463 | + nla_total_size(sizeof(u16)) /* IFLA_BRIDGE_FLAGS */ | |
3464 | + nla_total_size(sizeof(u16)); /* IFLA_BRIDGE_MODE */ | |
3465 | } | |
3466 | ||
02dba438 | 3467 | static int rtnl_bridge_notify(struct net_device *dev) |
2469ffd7 JF |
3468 | { |
3469 | struct net *net = dev_net(dev); | |
2469ffd7 JF |
3470 | struct sk_buff *skb; |
3471 | int err = -EOPNOTSUPP; | |
3472 | ||
02dba438 RP |
3473 | if (!dev->netdev_ops->ndo_bridge_getlink) |
3474 | return 0; | |
3475 | ||
2469ffd7 JF |
3476 | skb = nlmsg_new(bridge_nlmsg_size(), GFP_ATOMIC); |
3477 | if (!skb) { | |
3478 | err = -ENOMEM; | |
3479 | goto errout; | |
3480 | } | |
3481 | ||
46c264da | 3482 | err = dev->netdev_ops->ndo_bridge_getlink(skb, 0, 0, dev, 0, 0); |
02dba438 RP |
3483 | if (err < 0) |
3484 | goto errout; | |
2469ffd7 | 3485 | |
59ccaaaa RP |
3486 | if (!skb->len) |
3487 | goto errout; | |
3488 | ||
2469ffd7 JF |
3489 | rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC); |
3490 | return 0; | |
3491 | errout: | |
3492 | WARN_ON(err == -EMSGSIZE); | |
3493 | kfree_skb(skb); | |
59ccaaaa RP |
3494 | if (err) |
3495 | rtnl_set_sk_err(net, RTNLGRP_LINK, err); | |
2469ffd7 JF |
3496 | return err; |
3497 | } | |
3498 | ||
661d2967 | 3499 | static int rtnl_bridge_setlink(struct sk_buff *skb, struct nlmsghdr *nlh) |
e5a55a89 JF |
3500 | { |
3501 | struct net *net = sock_net(skb->sk); | |
3502 | struct ifinfomsg *ifm; | |
3503 | struct net_device *dev; | |
2469ffd7 JF |
3504 | struct nlattr *br_spec, *attr = NULL; |
3505 | int rem, err = -EOPNOTSUPP; | |
4de8b413 | 3506 | u16 flags = 0; |
c38e01b8 | 3507 | bool have_flags = false; |
e5a55a89 JF |
3508 | |
3509 | if (nlmsg_len(nlh) < sizeof(*ifm)) | |
3510 | return -EINVAL; | |
3511 | ||
3512 | ifm = nlmsg_data(nlh); | |
3513 | if (ifm->ifi_family != AF_BRIDGE) | |
3514 | return -EPFNOSUPPORT; | |
3515 | ||
3516 | dev = __dev_get_by_index(net, ifm->ifi_index); | |
3517 | if (!dev) { | |
3518 | pr_info("PF_BRIDGE: RTM_SETLINK with unknown ifindex\n"); | |
3519 | return -ENODEV; | |
3520 | } | |
3521 | ||
2469ffd7 JF |
3522 | br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); |
3523 | if (br_spec) { | |
3524 | nla_for_each_nested(attr, br_spec, rem) { | |
3525 | if (nla_type(attr) == IFLA_BRIDGE_FLAGS) { | |
6e8d1c55 TG |
3526 | if (nla_len(attr) < sizeof(flags)) |
3527 | return -EINVAL; | |
3528 | ||
c38e01b8 | 3529 | have_flags = true; |
2469ffd7 JF |
3530 | flags = nla_get_u16(attr); |
3531 | break; | |
3532 | } | |
3533 | } | |
3534 | } | |
3535 | ||
3536 | if (!flags || (flags & BRIDGE_FLAGS_MASTER)) { | |
898e5061 JP |
3537 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
3538 | ||
3539 | if (!br_dev || !br_dev->netdev_ops->ndo_bridge_setlink) { | |
2469ffd7 JF |
3540 | err = -EOPNOTSUPP; |
3541 | goto out; | |
3542 | } | |
3543 | ||
add511b3 | 3544 | err = br_dev->netdev_ops->ndo_bridge_setlink(dev, nlh, flags); |
e5a55a89 JF |
3545 | if (err) |
3546 | goto out; | |
2469ffd7 JF |
3547 | |
3548 | flags &= ~BRIDGE_FLAGS_MASTER; | |
e5a55a89 JF |
3549 | } |
3550 | ||
2469ffd7 JF |
3551 | if ((flags & BRIDGE_FLAGS_SELF)) { |
3552 | if (!dev->netdev_ops->ndo_bridge_setlink) | |
3553 | err = -EOPNOTSUPP; | |
3554 | else | |
add511b3 RP |
3555 | err = dev->netdev_ops->ndo_bridge_setlink(dev, nlh, |
3556 | flags); | |
02dba438 | 3557 | if (!err) { |
2469ffd7 | 3558 | flags &= ~BRIDGE_FLAGS_SELF; |
02dba438 RP |
3559 | |
3560 | /* Generate event to notify upper layer of bridge | |
3561 | * change | |
3562 | */ | |
3563 | err = rtnl_bridge_notify(dev); | |
3564 | } | |
2469ffd7 | 3565 | } |
e5a55a89 | 3566 | |
c38e01b8 | 3567 | if (have_flags) |
2469ffd7 | 3568 | memcpy(nla_data(attr), &flags, sizeof(flags)); |
e5a55a89 JF |
3569 | out: |
3570 | return err; | |
3571 | } | |
3572 | ||
661d2967 | 3573 | static int rtnl_bridge_dellink(struct sk_buff *skb, struct nlmsghdr *nlh) |
407af329 VY |
3574 | { |
3575 | struct net *net = sock_net(skb->sk); | |
3576 | struct ifinfomsg *ifm; | |
3577 | struct net_device *dev; | |
3578 | struct nlattr *br_spec, *attr = NULL; | |
3579 | int rem, err = -EOPNOTSUPP; | |
4de8b413 | 3580 | u16 flags = 0; |
407af329 VY |
3581 | bool have_flags = false; |
3582 | ||
3583 | if (nlmsg_len(nlh) < sizeof(*ifm)) | |
3584 | return -EINVAL; | |
3585 | ||
3586 | ifm = nlmsg_data(nlh); | |
3587 | if (ifm->ifi_family != AF_BRIDGE) | |
3588 | return -EPFNOSUPPORT; | |
3589 | ||
3590 | dev = __dev_get_by_index(net, ifm->ifi_index); | |
3591 | if (!dev) { | |
3592 | pr_info("PF_BRIDGE: RTM_SETLINK with unknown ifindex\n"); | |
3593 | return -ENODEV; | |
3594 | } | |
3595 | ||
3596 | br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); | |
3597 | if (br_spec) { | |
3598 | nla_for_each_nested(attr, br_spec, rem) { | |
3599 | if (nla_type(attr) == IFLA_BRIDGE_FLAGS) { | |
6e8d1c55 TG |
3600 | if (nla_len(attr) < sizeof(flags)) |
3601 | return -EINVAL; | |
3602 | ||
407af329 VY |
3603 | have_flags = true; |
3604 | flags = nla_get_u16(attr); | |
3605 | break; | |
3606 | } | |
3607 | } | |
3608 | } | |
3609 | ||
407af329 VY |
3610 | if (!flags || (flags & BRIDGE_FLAGS_MASTER)) { |
3611 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); | |
3612 | ||
3613 | if (!br_dev || !br_dev->netdev_ops->ndo_bridge_dellink) { | |
3614 | err = -EOPNOTSUPP; | |
3615 | goto out; | |
3616 | } | |
3617 | ||
add511b3 | 3618 | err = br_dev->netdev_ops->ndo_bridge_dellink(dev, nlh, flags); |
407af329 VY |
3619 | if (err) |
3620 | goto out; | |
3621 | ||
3622 | flags &= ~BRIDGE_FLAGS_MASTER; | |
3623 | } | |
3624 | ||
3625 | if ((flags & BRIDGE_FLAGS_SELF)) { | |
3626 | if (!dev->netdev_ops->ndo_bridge_dellink) | |
3627 | err = -EOPNOTSUPP; | |
3628 | else | |
add511b3 RP |
3629 | err = dev->netdev_ops->ndo_bridge_dellink(dev, nlh, |
3630 | flags); | |
407af329 | 3631 | |
02dba438 | 3632 | if (!err) { |
407af329 | 3633 | flags &= ~BRIDGE_FLAGS_SELF; |
02dba438 RP |
3634 | |
3635 | /* Generate event to notify upper layer of bridge | |
3636 | * change | |
3637 | */ | |
3638 | err = rtnl_bridge_notify(dev); | |
3639 | } | |
407af329 VY |
3640 | } |
3641 | ||
3642 | if (have_flags) | |
3643 | memcpy(nla_data(attr), &flags, sizeof(flags)); | |
407af329 VY |
3644 | out: |
3645 | return err; | |
3646 | } | |
3647 | ||
e8872a25 NA |
3648 | static bool stats_attr_valid(unsigned int mask, int attrid, int idxattr) |
3649 | { | |
3650 | return (mask & IFLA_STATS_FILTER_BIT(attrid)) && | |
3651 | (!idxattr || idxattr == attrid); | |
3652 | } | |
3653 | ||
69ae6ad2 NF |
3654 | #define IFLA_OFFLOAD_XSTATS_FIRST (IFLA_OFFLOAD_XSTATS_UNSPEC + 1) |
3655 | static int rtnl_get_offload_stats_attr_size(int attr_id) | |
3656 | { | |
3657 | switch (attr_id) { | |
3658 | case IFLA_OFFLOAD_XSTATS_CPU_HIT: | |
3659 | return sizeof(struct rtnl_link_stats64); | |
3660 | } | |
3661 | ||
3662 | return 0; | |
3663 | } | |
3664 | ||
3665 | static int rtnl_get_offload_stats(struct sk_buff *skb, struct net_device *dev, | |
3666 | int *prividx) | |
3667 | { | |
3668 | struct nlattr *attr = NULL; | |
3669 | int attr_id, size; | |
3670 | void *attr_data; | |
3671 | int err; | |
3672 | ||
3673 | if (!(dev->netdev_ops && dev->netdev_ops->ndo_has_offload_stats && | |
3674 | dev->netdev_ops->ndo_get_offload_stats)) | |
3675 | return -ENODATA; | |
3676 | ||
3677 | for (attr_id = IFLA_OFFLOAD_XSTATS_FIRST; | |
3678 | attr_id <= IFLA_OFFLOAD_XSTATS_MAX; attr_id++) { | |
3679 | if (attr_id < *prividx) | |
3680 | continue; | |
3681 | ||
3682 | size = rtnl_get_offload_stats_attr_size(attr_id); | |
3683 | if (!size) | |
3684 | continue; | |
3685 | ||
3df5b3c6 | 3686 | if (!dev->netdev_ops->ndo_has_offload_stats(dev, attr_id)) |
69ae6ad2 NF |
3687 | continue; |
3688 | ||
3689 | attr = nla_reserve_64bit(skb, attr_id, size, | |
3690 | IFLA_OFFLOAD_XSTATS_UNSPEC); | |
3691 | if (!attr) | |
3692 | goto nla_put_failure; | |
3693 | ||
3694 | attr_data = nla_data(attr); | |
3695 | memset(attr_data, 0, size); | |
3696 | err = dev->netdev_ops->ndo_get_offload_stats(attr_id, dev, | |
3697 | attr_data); | |
3698 | if (err) | |
3699 | goto get_offload_stats_failure; | |
3700 | } | |
3701 | ||
3702 | if (!attr) | |
3703 | return -ENODATA; | |
3704 | ||
3705 | *prividx = 0; | |
3706 | return 0; | |
3707 | ||
3708 | nla_put_failure: | |
3709 | err = -EMSGSIZE; | |
3710 | get_offload_stats_failure: | |
3711 | *prividx = attr_id; | |
3712 | return err; | |
3713 | } | |
3714 | ||
3715 | static int rtnl_get_offload_stats_size(const struct net_device *dev) | |
3716 | { | |
3717 | int nla_size = 0; | |
3718 | int attr_id; | |
3719 | int size; | |
3720 | ||
3721 | if (!(dev->netdev_ops && dev->netdev_ops->ndo_has_offload_stats && | |
3722 | dev->netdev_ops->ndo_get_offload_stats)) | |
3723 | return 0; | |
3724 | ||
3725 | for (attr_id = IFLA_OFFLOAD_XSTATS_FIRST; | |
3726 | attr_id <= IFLA_OFFLOAD_XSTATS_MAX; attr_id++) { | |
3df5b3c6 | 3727 | if (!dev->netdev_ops->ndo_has_offload_stats(dev, attr_id)) |
69ae6ad2 NF |
3728 | continue; |
3729 | size = rtnl_get_offload_stats_attr_size(attr_id); | |
3730 | nla_size += nla_total_size_64bit(size); | |
3731 | } | |
3732 | ||
3733 | if (nla_size != 0) | |
3734 | nla_size += nla_total_size(0); | |
3735 | ||
3736 | return nla_size; | |
3737 | } | |
3738 | ||
10c9ead9 RP |
3739 | static int rtnl_fill_statsinfo(struct sk_buff *skb, struct net_device *dev, |
3740 | int type, u32 pid, u32 seq, u32 change, | |
e8872a25 NA |
3741 | unsigned int flags, unsigned int filter_mask, |
3742 | int *idxattr, int *prividx) | |
10c9ead9 RP |
3743 | { |
3744 | struct if_stats_msg *ifsm; | |
3745 | struct nlmsghdr *nlh; | |
3746 | struct nlattr *attr; | |
e8872a25 | 3747 | int s_prividx = *prividx; |
69ae6ad2 | 3748 | int err; |
10c9ead9 RP |
3749 | |
3750 | ASSERT_RTNL(); | |
3751 | ||
3752 | nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ifsm), flags); | |
3753 | if (!nlh) | |
3754 | return -EMSGSIZE; | |
3755 | ||
3756 | ifsm = nlmsg_data(nlh); | |
3757 | ifsm->ifindex = dev->ifindex; | |
3758 | ifsm->filter_mask = filter_mask; | |
3759 | ||
e8872a25 | 3760 | if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_64, *idxattr)) { |
10c9ead9 | 3761 | struct rtnl_link_stats64 *sp; |
10c9ead9 | 3762 | |
58414d32 ND |
3763 | attr = nla_reserve_64bit(skb, IFLA_STATS_LINK_64, |
3764 | sizeof(struct rtnl_link_stats64), | |
3765 | IFLA_STATS_UNSPEC); | |
10c9ead9 RP |
3766 | if (!attr) |
3767 | goto nla_put_failure; | |
3768 | ||
3769 | sp = nla_data(attr); | |
3770 | dev_get_stats(dev, sp); | |
3771 | } | |
3772 | ||
97a47fac NA |
3773 | if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_XSTATS, *idxattr)) { |
3774 | const struct rtnl_link_ops *ops = dev->rtnl_link_ops; | |
3775 | ||
3776 | if (ops && ops->fill_linkxstats) { | |
97a47fac NA |
3777 | *idxattr = IFLA_STATS_LINK_XSTATS; |
3778 | attr = nla_nest_start(skb, | |
3779 | IFLA_STATS_LINK_XSTATS); | |
3780 | if (!attr) | |
3781 | goto nla_put_failure; | |
3782 | ||
80e73cc5 NA |
3783 | err = ops->fill_linkxstats(skb, dev, prividx, *idxattr); |
3784 | nla_nest_end(skb, attr); | |
3785 | if (err) | |
3786 | goto nla_put_failure; | |
3787 | *idxattr = 0; | |
3788 | } | |
3789 | } | |
3790 | ||
3791 | if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_XSTATS_SLAVE, | |
3792 | *idxattr)) { | |
3793 | const struct rtnl_link_ops *ops = NULL; | |
3794 | const struct net_device *master; | |
3795 | ||
3796 | master = netdev_master_upper_dev_get(dev); | |
3797 | if (master) | |
3798 | ops = master->rtnl_link_ops; | |
3799 | if (ops && ops->fill_linkxstats) { | |
80e73cc5 NA |
3800 | *idxattr = IFLA_STATS_LINK_XSTATS_SLAVE; |
3801 | attr = nla_nest_start(skb, | |
3802 | IFLA_STATS_LINK_XSTATS_SLAVE); | |
3803 | if (!attr) | |
3804 | goto nla_put_failure; | |
3805 | ||
3806 | err = ops->fill_linkxstats(skb, dev, prividx, *idxattr); | |
97a47fac NA |
3807 | nla_nest_end(skb, attr); |
3808 | if (err) | |
3809 | goto nla_put_failure; | |
3810 | *idxattr = 0; | |
3811 | } | |
3812 | } | |
3813 | ||
69ae6ad2 NF |
3814 | if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_OFFLOAD_XSTATS, |
3815 | *idxattr)) { | |
3816 | *idxattr = IFLA_STATS_LINK_OFFLOAD_XSTATS; | |
3817 | attr = nla_nest_start(skb, IFLA_STATS_LINK_OFFLOAD_XSTATS); | |
3818 | if (!attr) | |
3819 | goto nla_put_failure; | |
3820 | ||
3821 | err = rtnl_get_offload_stats(skb, dev, prividx); | |
3822 | if (err == -ENODATA) | |
3823 | nla_nest_cancel(skb, attr); | |
3824 | else | |
3825 | nla_nest_end(skb, attr); | |
3826 | ||
3827 | if (err && err != -ENODATA) | |
3828 | goto nla_put_failure; | |
3829 | *idxattr = 0; | |
3830 | } | |
3831 | ||
10c9ead9 RP |
3832 | nlmsg_end(skb, nlh); |
3833 | ||
3834 | return 0; | |
3835 | ||
3836 | nla_put_failure: | |
e8872a25 NA |
3837 | /* not a multi message or no progress mean a real error */ |
3838 | if (!(flags & NLM_F_MULTI) || s_prividx == *prividx) | |
3839 | nlmsg_cancel(skb, nlh); | |
3840 | else | |
3841 | nlmsg_end(skb, nlh); | |
10c9ead9 RP |
3842 | |
3843 | return -EMSGSIZE; | |
3844 | } | |
3845 | ||
10c9ead9 RP |
3846 | static size_t if_nlmsg_stats_size(const struct net_device *dev, |
3847 | u32 filter_mask) | |
3848 | { | |
3849 | size_t size = 0; | |
3850 | ||
e8872a25 | 3851 | if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_64, 0)) |
10c9ead9 RP |
3852 | size += nla_total_size_64bit(sizeof(struct rtnl_link_stats64)); |
3853 | ||
97a47fac NA |
3854 | if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_XSTATS, 0)) { |
3855 | const struct rtnl_link_ops *ops = dev->rtnl_link_ops; | |
80e73cc5 | 3856 | int attr = IFLA_STATS_LINK_XSTATS; |
97a47fac NA |
3857 | |
3858 | if (ops && ops->get_linkxstats_size) { | |
80e73cc5 NA |
3859 | size += nla_total_size(ops->get_linkxstats_size(dev, |
3860 | attr)); | |
97a47fac NA |
3861 | /* for IFLA_STATS_LINK_XSTATS */ |
3862 | size += nla_total_size(0); | |
3863 | } | |
3864 | } | |
3865 | ||
80e73cc5 NA |
3866 | if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_XSTATS_SLAVE, 0)) { |
3867 | struct net_device *_dev = (struct net_device *)dev; | |
3868 | const struct rtnl_link_ops *ops = NULL; | |
3869 | const struct net_device *master; | |
3870 | ||
3871 | /* netdev_master_upper_dev_get can't take const */ | |
3872 | master = netdev_master_upper_dev_get(_dev); | |
3873 | if (master) | |
3874 | ops = master->rtnl_link_ops; | |
3875 | if (ops && ops->get_linkxstats_size) { | |
3876 | int attr = IFLA_STATS_LINK_XSTATS_SLAVE; | |
3877 | ||
3878 | size += nla_total_size(ops->get_linkxstats_size(dev, | |
3879 | attr)); | |
3880 | /* for IFLA_STATS_LINK_XSTATS_SLAVE */ | |
3881 | size += nla_total_size(0); | |
3882 | } | |
3883 | } | |
3884 | ||
69ae6ad2 NF |
3885 | if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_OFFLOAD_XSTATS, 0)) |
3886 | size += rtnl_get_offload_stats_size(dev); | |
3887 | ||
10c9ead9 RP |
3888 | return size; |
3889 | } | |
3890 | ||
3891 | static int rtnl_stats_get(struct sk_buff *skb, struct nlmsghdr *nlh) | |
3892 | { | |
3893 | struct net *net = sock_net(skb->sk); | |
10c9ead9 | 3894 | struct net_device *dev = NULL; |
e8872a25 NA |
3895 | int idxattr = 0, prividx = 0; |
3896 | struct if_stats_msg *ifsm; | |
10c9ead9 RP |
3897 | struct sk_buff *nskb; |
3898 | u32 filter_mask; | |
3899 | int err; | |
3900 | ||
3901 | ifsm = nlmsg_data(nlh); | |
3902 | if (ifsm->ifindex > 0) | |
3903 | dev = __dev_get_by_index(net, ifsm->ifindex); | |
3904 | else | |
3905 | return -EINVAL; | |
3906 | ||
3907 | if (!dev) | |
3908 | return -ENODEV; | |
3909 | ||
3910 | filter_mask = ifsm->filter_mask; | |
3911 | if (!filter_mask) | |
3912 | return -EINVAL; | |
3913 | ||
3914 | nskb = nlmsg_new(if_nlmsg_stats_size(dev, filter_mask), GFP_KERNEL); | |
3915 | if (!nskb) | |
3916 | return -ENOBUFS; | |
3917 | ||
3918 | err = rtnl_fill_statsinfo(nskb, dev, RTM_NEWSTATS, | |
3919 | NETLINK_CB(skb).portid, nlh->nlmsg_seq, 0, | |
e8872a25 | 3920 | 0, filter_mask, &idxattr, &prividx); |
10c9ead9 RP |
3921 | if (err < 0) { |
3922 | /* -EMSGSIZE implies BUG in if_nlmsg_stats_size */ | |
3923 | WARN_ON(err == -EMSGSIZE); | |
3924 | kfree_skb(nskb); | |
3925 | } else { | |
3926 | err = rtnl_unicast(nskb, net, NETLINK_CB(skb).portid); | |
3927 | } | |
3928 | ||
3929 | return err; | |
3930 | } | |
3931 | ||
3932 | static int rtnl_stats_dump(struct sk_buff *skb, struct netlink_callback *cb) | |
3933 | { | |
e8872a25 | 3934 | int h, s_h, err, s_idx, s_idxattr, s_prividx; |
10c9ead9 | 3935 | struct net *net = sock_net(skb->sk); |
e8872a25 | 3936 | unsigned int flags = NLM_F_MULTI; |
10c9ead9 | 3937 | struct if_stats_msg *ifsm; |
10c9ead9 | 3938 | struct hlist_head *head; |
e8872a25 | 3939 | struct net_device *dev; |
10c9ead9 | 3940 | u32 filter_mask = 0; |
e8872a25 | 3941 | int idx = 0; |
10c9ead9 RP |
3942 | |
3943 | s_h = cb->args[0]; | |
3944 | s_idx = cb->args[1]; | |
e8872a25 NA |
3945 | s_idxattr = cb->args[2]; |
3946 | s_prividx = cb->args[3]; | |
10c9ead9 RP |
3947 | |
3948 | cb->seq = net->dev_base_seq; | |
3949 | ||
3950 | ifsm = nlmsg_data(cb->nlh); | |
3951 | filter_mask = ifsm->filter_mask; | |
3952 | if (!filter_mask) | |
3953 | return -EINVAL; | |
3954 | ||
3955 | for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) { | |
3956 | idx = 0; | |
3957 | head = &net->dev_index_head[h]; | |
3958 | hlist_for_each_entry(dev, head, index_hlist) { | |
3959 | if (idx < s_idx) | |
3960 | goto cont; | |
3961 | err = rtnl_fill_statsinfo(skb, dev, RTM_NEWSTATS, | |
3962 | NETLINK_CB(cb->skb).portid, | |
3963 | cb->nlh->nlmsg_seq, 0, | |
e8872a25 NA |
3964 | flags, filter_mask, |
3965 | &s_idxattr, &s_prividx); | |
10c9ead9 RP |
3966 | /* If we ran out of room on the first message, |
3967 | * we're in trouble | |
3968 | */ | |
3969 | WARN_ON((err == -EMSGSIZE) && (skb->len == 0)); | |
3970 | ||
3971 | if (err < 0) | |
3972 | goto out; | |
e8872a25 NA |
3973 | s_prividx = 0; |
3974 | s_idxattr = 0; | |
10c9ead9 RP |
3975 | nl_dump_check_consistent(cb, nlmsg_hdr(skb)); |
3976 | cont: | |
3977 | idx++; | |
3978 | } | |
3979 | } | |
3980 | out: | |
e8872a25 NA |
3981 | cb->args[3] = s_prividx; |
3982 | cb->args[2] = s_idxattr; | |
10c9ead9 RP |
3983 | cb->args[1] = idx; |
3984 | cb->args[0] = h; | |
3985 | ||
3986 | return skb->len; | |
3987 | } | |
3988 | ||
1da177e4 LT |
3989 | /* Process one rtnetlink message. */ |
3990 | ||
1d00a4eb | 3991 | static int rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh) |
1da177e4 | 3992 | { |
3b1e0a65 | 3993 | struct net *net = sock_net(skb->sk); |
e2849863 | 3994 | rtnl_doit_func doit; |
617cfc75 | 3995 | int kind; |
1da177e4 LT |
3996 | int family; |
3997 | int type; | |
2907c35f | 3998 | int err; |
1da177e4 | 3999 | |
1da177e4 | 4000 | type = nlh->nlmsg_type; |
1da177e4 | 4001 | if (type > RTM_MAX) |
038890fe | 4002 | return -EOPNOTSUPP; |
1da177e4 LT |
4003 | |
4004 | type -= RTM_BASE; | |
4005 | ||
4006 | /* All the messages must have at least 1 byte length */ | |
573ce260 | 4007 | if (nlmsg_len(nlh) < sizeof(struct rtgenmsg)) |
1da177e4 LT |
4008 | return 0; |
4009 | ||
573ce260 | 4010 | family = ((struct rtgenmsg *)nlmsg_data(nlh))->rtgen_family; |
1da177e4 LT |
4011 | kind = type&3; |
4012 | ||
90f62cf3 | 4013 | if (kind != 2 && !netlink_net_capable(skb, CAP_NET_ADMIN)) |
1d00a4eb | 4014 | return -EPERM; |
1da177e4 | 4015 | |
b8f3ab42 | 4016 | if (kind == 2 && nlh->nlmsg_flags&NLM_F_DUMP) { |
97c53cac | 4017 | struct sock *rtnl; |
e2849863 | 4018 | rtnl_dumpit_func dumpit; |
c7ac8679 GR |
4019 | rtnl_calcit_func calcit; |
4020 | u16 min_dump_alloc = 0; | |
1da177e4 | 4021 | |
e2849863 TG |
4022 | dumpit = rtnl_get_dumpit(family, type); |
4023 | if (dumpit == NULL) | |
038890fe | 4024 | return -EOPNOTSUPP; |
c7ac8679 GR |
4025 | calcit = rtnl_get_calcit(family, type); |
4026 | if (calcit) | |
115c9b81 | 4027 | min_dump_alloc = calcit(skb, nlh); |
9ac4a169 | 4028 | |
2907c35f | 4029 | __rtnl_unlock(); |
97c53cac | 4030 | rtnl = net->rtnl; |
80d326fa PNA |
4031 | { |
4032 | struct netlink_dump_control c = { | |
4033 | .dump = dumpit, | |
4034 | .min_dump_alloc = min_dump_alloc, | |
4035 | }; | |
4036 | err = netlink_dump_start(rtnl, skb, nlh, &c); | |
4037 | } | |
2907c35f ED |
4038 | rtnl_lock(); |
4039 | return err; | |
1da177e4 LT |
4040 | } |
4041 | ||
e2849863 TG |
4042 | doit = rtnl_get_doit(family, type); |
4043 | if (doit == NULL) | |
038890fe | 4044 | return -EOPNOTSUPP; |
1da177e4 | 4045 | |
661d2967 | 4046 | return doit(skb, nlh); |
1da177e4 LT |
4047 | } |
4048 | ||
cd40b7d3 | 4049 | static void rtnetlink_rcv(struct sk_buff *skb) |
1da177e4 | 4050 | { |
cd40b7d3 DL |
4051 | rtnl_lock(); |
4052 | netlink_rcv_skb(skb, &rtnetlink_rcv_msg); | |
4053 | rtnl_unlock(); | |
1da177e4 LT |
4054 | } |
4055 | ||
1da177e4 LT |
4056 | static int rtnetlink_event(struct notifier_block *this, unsigned long event, void *ptr) |
4057 | { | |
351638e7 | 4058 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
e9dc8653 | 4059 | |
1da177e4 | 4060 | switch (event) { |
1da177e4 LT |
4061 | case NETDEV_UP: |
4062 | case NETDEV_DOWN: | |
10de05af | 4063 | case NETDEV_PRE_UP: |
d90a909e EB |
4064 | case NETDEV_POST_INIT: |
4065 | case NETDEV_REGISTER: | |
1da177e4 | 4066 | case NETDEV_CHANGE: |
755d0e77 | 4067 | case NETDEV_PRE_TYPE_CHANGE: |
1da177e4 | 4068 | case NETDEV_GOING_DOWN: |
a2835763 | 4069 | case NETDEV_UNREGISTER: |
0115e8e3 | 4070 | case NETDEV_UNREGISTER_FINAL: |
ac3d3f81 AW |
4071 | case NETDEV_RELEASE: |
4072 | case NETDEV_JOIN: | |
61bd3857 | 4073 | case NETDEV_BONDING_INFO: |
1da177e4 LT |
4074 | break; |
4075 | default: | |
7f294054 | 4076 | rtmsg_ifinfo(RTM_NEWLINK, dev, 0, GFP_KERNEL); |
1da177e4 LT |
4077 | break; |
4078 | } | |
4079 | return NOTIFY_DONE; | |
4080 | } | |
4081 | ||
4082 | static struct notifier_block rtnetlink_dev_notifier = { | |
4083 | .notifier_call = rtnetlink_event, | |
4084 | }; | |
4085 | ||
97c53cac | 4086 | |
2c8c1e72 | 4087 | static int __net_init rtnetlink_net_init(struct net *net) |
97c53cac DL |
4088 | { |
4089 | struct sock *sk; | |
a31f2d17 PNA |
4090 | struct netlink_kernel_cfg cfg = { |
4091 | .groups = RTNLGRP_MAX, | |
4092 | .input = rtnetlink_rcv, | |
4093 | .cb_mutex = &rtnl_mutex, | |
9785e10a | 4094 | .flags = NL_CFG_F_NONROOT_RECV, |
a31f2d17 PNA |
4095 | }; |
4096 | ||
9f00d977 | 4097 | sk = netlink_kernel_create(net, NETLINK_ROUTE, &cfg); |
97c53cac DL |
4098 | if (!sk) |
4099 | return -ENOMEM; | |
97c53cac DL |
4100 | net->rtnl = sk; |
4101 | return 0; | |
4102 | } | |
4103 | ||
2c8c1e72 | 4104 | static void __net_exit rtnetlink_net_exit(struct net *net) |
97c53cac | 4105 | { |
775516bf DL |
4106 | netlink_kernel_release(net->rtnl); |
4107 | net->rtnl = NULL; | |
97c53cac DL |
4108 | } |
4109 | ||
4110 | static struct pernet_operations rtnetlink_net_ops = { | |
4111 | .init = rtnetlink_net_init, | |
4112 | .exit = rtnetlink_net_exit, | |
4113 | }; | |
4114 | ||
1da177e4 LT |
4115 | void __init rtnetlink_init(void) |
4116 | { | |
97c53cac | 4117 | if (register_pernet_subsys(&rtnetlink_net_ops)) |
1da177e4 | 4118 | panic("rtnetlink_init: cannot initialize rtnetlink\n"); |
97c53cac | 4119 | |
1da177e4 | 4120 | register_netdevice_notifier(&rtnetlink_dev_notifier); |
340d17fc | 4121 | |
c7ac8679 GR |
4122 | rtnl_register(PF_UNSPEC, RTM_GETLINK, rtnl_getlink, |
4123 | rtnl_dump_ifinfo, rtnl_calcit); | |
4124 | rtnl_register(PF_UNSPEC, RTM_SETLINK, rtnl_setlink, NULL, NULL); | |
4125 | rtnl_register(PF_UNSPEC, RTM_NEWLINK, rtnl_newlink, NULL, NULL); | |
4126 | rtnl_register(PF_UNSPEC, RTM_DELLINK, rtnl_dellink, NULL, NULL); | |
687ad8cc | 4127 | |
c7ac8679 GR |
4128 | rtnl_register(PF_UNSPEC, RTM_GETADDR, NULL, rtnl_dump_all, NULL); |
4129 | rtnl_register(PF_UNSPEC, RTM_GETROUTE, NULL, rtnl_dump_all, NULL); | |
77162022 JF |
4130 | |
4131 | rtnl_register(PF_BRIDGE, RTM_NEWNEIGH, rtnl_fdb_add, NULL, NULL); | |
4132 | rtnl_register(PF_BRIDGE, RTM_DELNEIGH, rtnl_fdb_del, NULL, NULL); | |
4133 | rtnl_register(PF_BRIDGE, RTM_GETNEIGH, NULL, rtnl_fdb_dump, NULL); | |
e5a55a89 JF |
4134 | |
4135 | rtnl_register(PF_BRIDGE, RTM_GETLINK, NULL, rtnl_bridge_getlink, NULL); | |
407af329 | 4136 | rtnl_register(PF_BRIDGE, RTM_DELLINK, rtnl_bridge_dellink, NULL, NULL); |
e5a55a89 | 4137 | rtnl_register(PF_BRIDGE, RTM_SETLINK, rtnl_bridge_setlink, NULL, NULL); |
10c9ead9 RP |
4138 | |
4139 | rtnl_register(PF_UNSPEC, RTM_GETSTATS, rtnl_stats_get, rtnl_stats_dump, | |
4140 | NULL); | |
1da177e4 | 4141 | } |