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 | ||
ee5d032f | 19 | #include <linux/bitops.h> |
1da177e4 LT |
20 | #include <linux/errno.h> |
21 | #include <linux/module.h> | |
22 | #include <linux/types.h> | |
23 | #include <linux/socket.h> | |
24 | #include <linux/kernel.h> | |
1da177e4 LT |
25 | #include <linux/timer.h> |
26 | #include <linux/string.h> | |
27 | #include <linux/sockios.h> | |
28 | #include <linux/net.h> | |
29 | #include <linux/fcntl.h> | |
30 | #include <linux/mm.h> | |
31 | #include <linux/slab.h> | |
32 | #include <linux/interrupt.h> | |
33 | #include <linux/capability.h> | |
34 | #include <linux/skbuff.h> | |
35 | #include <linux/init.h> | |
36 | #include <linux/security.h> | |
6756ae4b | 37 | #include <linux/mutex.h> |
1823730f | 38 | #include <linux/if_addr.h> |
77162022 | 39 | #include <linux/if_bridge.h> |
f6f6424b | 40 | #include <linux/if_vlan.h> |
ebc08a6f | 41 | #include <linux/pci.h> |
77162022 | 42 | #include <linux/etherdevice.h> |
58038695 | 43 | #include <linux/bpf.h> |
1da177e4 | 44 | |
7c0f6ba6 | 45 | #include <linux/uaccess.h> |
1da177e4 LT |
46 | |
47 | #include <linux/inet.h> | |
48 | #include <linux/netdevice.h> | |
82f28412 | 49 | #include <net/switchdev.h> |
1da177e4 LT |
50 | #include <net/ip.h> |
51 | #include <net/protocol.h> | |
52 | #include <net/arp.h> | |
53 | #include <net/route.h> | |
54 | #include <net/udp.h> | |
ea697639 | 55 | #include <net/tcp.h> |
1da177e4 LT |
56 | #include <net/sock.h> |
57 | #include <net/pkt_sched.h> | |
14c0b97d | 58 | #include <net/fib_rules.h> |
e2849863 | 59 | #include <net/rtnetlink.h> |
30ffee84 | 60 | #include <net/net_namespace.h> |
1da177e4 | 61 | |
e0d087af | 62 | struct rtnl_link { |
e2849863 TG |
63 | rtnl_doit_func doit; |
64 | rtnl_dumpit_func dumpit; | |
62256f98 | 65 | unsigned int flags; |
e2849863 TG |
66 | }; |
67 | ||
6756ae4b | 68 | static DEFINE_MUTEX(rtnl_mutex); |
1da177e4 LT |
69 | |
70 | void rtnl_lock(void) | |
71 | { | |
6756ae4b | 72 | mutex_lock(&rtnl_mutex); |
1da177e4 | 73 | } |
e0d087af | 74 | EXPORT_SYMBOL(rtnl_lock); |
1da177e4 | 75 | |
1b5c5493 ED |
76 | static struct sk_buff *defer_kfree_skb_list; |
77 | void rtnl_kfree_skbs(struct sk_buff *head, struct sk_buff *tail) | |
78 | { | |
79 | if (head && tail) { | |
80 | tail->next = defer_kfree_skb_list; | |
81 | defer_kfree_skb_list = head; | |
82 | } | |
83 | } | |
84 | EXPORT_SYMBOL(rtnl_kfree_skbs); | |
85 | ||
6756ae4b | 86 | void __rtnl_unlock(void) |
1da177e4 | 87 | { |
1b5c5493 ED |
88 | struct sk_buff *head = defer_kfree_skb_list; |
89 | ||
90 | defer_kfree_skb_list = NULL; | |
91 | ||
6756ae4b | 92 | mutex_unlock(&rtnl_mutex); |
1b5c5493 ED |
93 | |
94 | while (head) { | |
95 | struct sk_buff *next = head->next; | |
96 | ||
97 | kfree_skb(head); | |
98 | cond_resched(); | |
99 | head = next; | |
100 | } | |
1da177e4 | 101 | } |
6756ae4b | 102 | |
1da177e4 LT |
103 | void rtnl_unlock(void) |
104 | { | |
58ec3b4d | 105 | /* This fellow will unlock it for us. */ |
1da177e4 LT |
106 | netdev_run_todo(); |
107 | } | |
e0d087af | 108 | EXPORT_SYMBOL(rtnl_unlock); |
1da177e4 | 109 | |
6756ae4b SH |
110 | int rtnl_trylock(void) |
111 | { | |
112 | return mutex_trylock(&rtnl_mutex); | |
113 | } | |
e0d087af | 114 | EXPORT_SYMBOL(rtnl_trylock); |
6756ae4b | 115 | |
c9c1014b PM |
116 | int rtnl_is_locked(void) |
117 | { | |
118 | return mutex_is_locked(&rtnl_mutex); | |
119 | } | |
e0d087af | 120 | EXPORT_SYMBOL(rtnl_is_locked); |
c9c1014b | 121 | |
a898def2 | 122 | #ifdef CONFIG_PROVE_LOCKING |
0cbf3343 | 123 | bool lockdep_rtnl_is_held(void) |
a898def2 PM |
124 | { |
125 | return lockdep_is_held(&rtnl_mutex); | |
126 | } | |
127 | EXPORT_SYMBOL(lockdep_rtnl_is_held); | |
128 | #endif /* #ifdef CONFIG_PROVE_LOCKING */ | |
129 | ||
6853dd48 | 130 | static struct rtnl_link __rcu *rtnl_msg_handlers[RTNL_FAMILY_MAX + 1]; |
019a3169 | 131 | static refcount_t rtnl_msg_handlers_ref[RTNL_FAMILY_MAX + 1]; |
e2849863 TG |
132 | |
133 | static inline int rtm_msgindex(int msgtype) | |
134 | { | |
135 | int msgindex = msgtype - RTM_BASE; | |
136 | ||
137 | /* | |
138 | * msgindex < 0 implies someone tried to register a netlink | |
139 | * control code. msgindex >= RTM_NR_MSGTYPES may indicate that | |
140 | * the message type has not been added to linux/rtnetlink.h | |
141 | */ | |
142 | BUG_ON(msgindex < 0 || msgindex >= RTM_NR_MSGTYPES); | |
143 | ||
144 | return msgindex; | |
145 | } | |
146 | ||
e2849863 TG |
147 | /** |
148 | * __rtnl_register - Register a rtnetlink message type | |
149 | * @protocol: Protocol family or PF_UNSPEC | |
150 | * @msgtype: rtnetlink message type | |
151 | * @doit: Function pointer called for each request message | |
152 | * @dumpit: Function pointer called for each dump request (NLM_F_DUMP) message | |
b97bac64 | 153 | * @flags: rtnl_link_flags to modifiy behaviour of doit/dumpit functions |
e2849863 TG |
154 | * |
155 | * Registers the specified function pointers (at least one of them has | |
156 | * to be non-NULL) to be called whenever a request message for the | |
157 | * specified protocol family and message type is received. | |
158 | * | |
159 | * The special protocol family PF_UNSPEC may be used to define fallback | |
160 | * function pointers for the case when no entry for the specific protocol | |
161 | * family exists. | |
162 | * | |
163 | * Returns 0 on success or a negative error code. | |
164 | */ | |
165 | int __rtnl_register(int protocol, int msgtype, | |
c7ac8679 | 166 | rtnl_doit_func doit, rtnl_dumpit_func dumpit, |
b97bac64 | 167 | unsigned int flags) |
e2849863 TG |
168 | { |
169 | struct rtnl_link *tab; | |
170 | int msgindex; | |
171 | ||
25239cee | 172 | BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX); |
e2849863 TG |
173 | msgindex = rtm_msgindex(msgtype); |
174 | ||
377cb248 | 175 | tab = rcu_dereference_raw(rtnl_msg_handlers[protocol]); |
e2849863 TG |
176 | if (tab == NULL) { |
177 | tab = kcalloc(RTM_NR_MSGTYPES, sizeof(*tab), GFP_KERNEL); | |
178 | if (tab == NULL) | |
179 | return -ENOBUFS; | |
180 | ||
6853dd48 | 181 | rcu_assign_pointer(rtnl_msg_handlers[protocol], tab); |
e2849863 TG |
182 | } |
183 | ||
184 | if (doit) | |
185 | tab[msgindex].doit = doit; | |
e2849863 TG |
186 | if (dumpit) |
187 | tab[msgindex].dumpit = dumpit; | |
62256f98 | 188 | tab[msgindex].flags |= flags; |
e2849863 TG |
189 | |
190 | return 0; | |
191 | } | |
e2849863 TG |
192 | EXPORT_SYMBOL_GPL(__rtnl_register); |
193 | ||
194 | /** | |
195 | * rtnl_register - Register a rtnetlink message type | |
196 | * | |
197 | * Identical to __rtnl_register() but panics on failure. This is useful | |
198 | * as failure of this function is very unlikely, it can only happen due | |
199 | * to lack of memory when allocating the chain to store all message | |
200 | * handlers for a protocol. Meant for use in init functions where lack | |
25985edc | 201 | * of memory implies no sense in continuing. |
e2849863 TG |
202 | */ |
203 | void rtnl_register(int protocol, int msgtype, | |
c7ac8679 | 204 | rtnl_doit_func doit, rtnl_dumpit_func dumpit, |
b97bac64 | 205 | unsigned int flags) |
e2849863 | 206 | { |
b97bac64 | 207 | if (__rtnl_register(protocol, msgtype, doit, dumpit, flags) < 0) |
e2849863 TG |
208 | panic("Unable to register rtnetlink message handler, " |
209 | "protocol = %d, message type = %d\n", | |
210 | protocol, msgtype); | |
211 | } | |
e2849863 TG |
212 | EXPORT_SYMBOL_GPL(rtnl_register); |
213 | ||
214 | /** | |
215 | * rtnl_unregister - Unregister a rtnetlink message type | |
216 | * @protocol: Protocol family or PF_UNSPEC | |
217 | * @msgtype: rtnetlink message type | |
218 | * | |
219 | * Returns 0 on success or a negative error code. | |
220 | */ | |
221 | int rtnl_unregister(int protocol, int msgtype) | |
222 | { | |
6853dd48 | 223 | struct rtnl_link *handlers; |
e2849863 TG |
224 | int msgindex; |
225 | ||
25239cee | 226 | BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX); |
e2849863 TG |
227 | msgindex = rtm_msgindex(msgtype); |
228 | ||
6853dd48 FW |
229 | rtnl_lock(); |
230 | handlers = rtnl_dereference(rtnl_msg_handlers[protocol]); | |
231 | if (!handlers) { | |
232 | rtnl_unlock(); | |
e2849863 | 233 | return -ENOENT; |
6853dd48 | 234 | } |
e2849863 | 235 | |
6853dd48 FW |
236 | handlers[msgindex].doit = NULL; |
237 | handlers[msgindex].dumpit = NULL; | |
62256f98 | 238 | handlers[msgindex].flags = 0; |
6853dd48 | 239 | rtnl_unlock(); |
e2849863 TG |
240 | |
241 | return 0; | |
242 | } | |
e2849863 TG |
243 | EXPORT_SYMBOL_GPL(rtnl_unregister); |
244 | ||
245 | /** | |
246 | * rtnl_unregister_all - Unregister all rtnetlink message type of a protocol | |
247 | * @protocol : Protocol family or PF_UNSPEC | |
248 | * | |
249 | * Identical to calling rtnl_unregster() for all registered message types | |
250 | * of a certain protocol family. | |
251 | */ | |
252 | void rtnl_unregister_all(int protocol) | |
253 | { | |
019a3169 FW |
254 | struct rtnl_link *handlers; |
255 | ||
25239cee | 256 | BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX); |
e2849863 | 257 | |
019a3169 | 258 | rtnl_lock(); |
6853dd48 FW |
259 | handlers = rtnl_dereference(rtnl_msg_handlers[protocol]); |
260 | RCU_INIT_POINTER(rtnl_msg_handlers[protocol], NULL); | |
019a3169 FW |
261 | rtnl_unlock(); |
262 | ||
6853dd48 FW |
263 | synchronize_net(); |
264 | ||
d38a6512 | 265 | while (refcount_read(&rtnl_msg_handlers_ref[protocol]) > 1) |
019a3169 FW |
266 | schedule(); |
267 | kfree(handlers); | |
e2849863 | 268 | } |
e2849863 | 269 | EXPORT_SYMBOL_GPL(rtnl_unregister_all); |
1da177e4 | 270 | |
38f7b870 PM |
271 | static LIST_HEAD(link_ops); |
272 | ||
c63044f0 ED |
273 | static const struct rtnl_link_ops *rtnl_link_ops_get(const char *kind) |
274 | { | |
275 | const struct rtnl_link_ops *ops; | |
276 | ||
277 | list_for_each_entry(ops, &link_ops, list) { | |
278 | if (!strcmp(ops->kind, kind)) | |
279 | return ops; | |
280 | } | |
281 | return NULL; | |
282 | } | |
283 | ||
38f7b870 PM |
284 | /** |
285 | * __rtnl_link_register - Register rtnl_link_ops with rtnetlink. | |
286 | * @ops: struct rtnl_link_ops * to register | |
287 | * | |
288 | * The caller must hold the rtnl_mutex. This function should be used | |
289 | * by drivers that create devices during module initialization. It | |
290 | * must be called before registering the devices. | |
291 | * | |
292 | * Returns 0 on success or a negative error code. | |
293 | */ | |
294 | int __rtnl_link_register(struct rtnl_link_ops *ops) | |
295 | { | |
c63044f0 ED |
296 | if (rtnl_link_ops_get(ops->kind)) |
297 | return -EEXIST; | |
298 | ||
b0ab2fab JP |
299 | /* The check for setup is here because if ops |
300 | * does not have that filled up, it is not possible | |
301 | * to use the ops for creating device. So do not | |
302 | * fill up dellink as well. That disables rtnl_dellink. | |
303 | */ | |
304 | if (ops->setup && !ops->dellink) | |
23289a37 | 305 | ops->dellink = unregister_netdevice_queue; |
2d85cba2 | 306 | |
38f7b870 PM |
307 | list_add_tail(&ops->list, &link_ops); |
308 | return 0; | |
309 | } | |
38f7b870 PM |
310 | EXPORT_SYMBOL_GPL(__rtnl_link_register); |
311 | ||
312 | /** | |
313 | * rtnl_link_register - Register rtnl_link_ops with rtnetlink. | |
314 | * @ops: struct rtnl_link_ops * to register | |
315 | * | |
316 | * Returns 0 on success or a negative error code. | |
317 | */ | |
318 | int rtnl_link_register(struct rtnl_link_ops *ops) | |
319 | { | |
320 | int err; | |
321 | ||
322 | rtnl_lock(); | |
323 | err = __rtnl_link_register(ops); | |
324 | rtnl_unlock(); | |
325 | return err; | |
326 | } | |
38f7b870 PM |
327 | EXPORT_SYMBOL_GPL(rtnl_link_register); |
328 | ||
669f87ba PE |
329 | static void __rtnl_kill_links(struct net *net, struct rtnl_link_ops *ops) |
330 | { | |
331 | struct net_device *dev; | |
23289a37 ED |
332 | LIST_HEAD(list_kill); |
333 | ||
669f87ba | 334 | for_each_netdev(net, dev) { |
23289a37 ED |
335 | if (dev->rtnl_link_ops == ops) |
336 | ops->dellink(dev, &list_kill); | |
669f87ba | 337 | } |
23289a37 | 338 | unregister_netdevice_many(&list_kill); |
669f87ba PE |
339 | } |
340 | ||
38f7b870 PM |
341 | /** |
342 | * __rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink. | |
343 | * @ops: struct rtnl_link_ops * to unregister | |
344 | * | |
2d85cba2 | 345 | * The caller must hold the rtnl_mutex. |
38f7b870 PM |
346 | */ |
347 | void __rtnl_link_unregister(struct rtnl_link_ops *ops) | |
348 | { | |
881d966b | 349 | struct net *net; |
2d85cba2 | 350 | |
881d966b | 351 | for_each_net(net) { |
669f87ba | 352 | __rtnl_kill_links(net, ops); |
2d85cba2 | 353 | } |
38f7b870 PM |
354 | list_del(&ops->list); |
355 | } | |
38f7b870 PM |
356 | EXPORT_SYMBOL_GPL(__rtnl_link_unregister); |
357 | ||
200b916f CW |
358 | /* Return with the rtnl_lock held when there are no network |
359 | * devices unregistering in any network namespace. | |
360 | */ | |
361 | static void rtnl_lock_unregistering_all(void) | |
362 | { | |
363 | struct net *net; | |
364 | bool unregistering; | |
ff960a73 | 365 | DEFINE_WAIT_FUNC(wait, woken_wake_function); |
200b916f | 366 | |
ff960a73 | 367 | add_wait_queue(&netdev_unregistering_wq, &wait); |
200b916f | 368 | for (;;) { |
200b916f CW |
369 | unregistering = false; |
370 | rtnl_lock(); | |
371 | for_each_net(net) { | |
372 | if (net->dev_unreg_count > 0) { | |
373 | unregistering = true; | |
374 | break; | |
375 | } | |
376 | } | |
377 | if (!unregistering) | |
378 | break; | |
379 | __rtnl_unlock(); | |
ff960a73 PZ |
380 | |
381 | wait_woken(&wait, TASK_UNINTERRUPTIBLE, MAX_SCHEDULE_TIMEOUT); | |
200b916f | 382 | } |
ff960a73 | 383 | remove_wait_queue(&netdev_unregistering_wq, &wait); |
200b916f CW |
384 | } |
385 | ||
38f7b870 PM |
386 | /** |
387 | * rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink. | |
388 | * @ops: struct rtnl_link_ops * to unregister | |
389 | */ | |
390 | void rtnl_link_unregister(struct rtnl_link_ops *ops) | |
391 | { | |
200b916f CW |
392 | /* Close the race with cleanup_net() */ |
393 | mutex_lock(&net_mutex); | |
394 | rtnl_lock_unregistering_all(); | |
38f7b870 PM |
395 | __rtnl_link_unregister(ops); |
396 | rtnl_unlock(); | |
200b916f | 397 | mutex_unlock(&net_mutex); |
38f7b870 | 398 | } |
38f7b870 PM |
399 | EXPORT_SYMBOL_GPL(rtnl_link_unregister); |
400 | ||
ba7d49b1 JP |
401 | static size_t rtnl_link_get_slave_info_data_size(const struct net_device *dev) |
402 | { | |
403 | struct net_device *master_dev; | |
404 | const struct rtnl_link_ops *ops; | |
8515ae38 | 405 | size_t size = 0; |
ba7d49b1 | 406 | |
8515ae38 FW |
407 | rcu_read_lock(); |
408 | ||
409 | master_dev = netdev_master_upper_dev_get_rcu((struct net_device *)dev); | |
ba7d49b1 | 410 | if (!master_dev) |
8515ae38 FW |
411 | goto out; |
412 | ||
ba7d49b1 | 413 | ops = master_dev->rtnl_link_ops; |
6049f253 | 414 | if (!ops || !ops->get_slave_size) |
8515ae38 | 415 | goto out; |
ba7d49b1 | 416 | /* IFLA_INFO_SLAVE_DATA + nested data */ |
8515ae38 | 417 | size = nla_total_size(sizeof(struct nlattr)) + |
ba7d49b1 | 418 | ops->get_slave_size(master_dev, dev); |
8515ae38 FW |
419 | |
420 | out: | |
421 | rcu_read_unlock(); | |
422 | return size; | |
ba7d49b1 JP |
423 | } |
424 | ||
38f7b870 PM |
425 | static size_t rtnl_link_get_size(const struct net_device *dev) |
426 | { | |
427 | const struct rtnl_link_ops *ops = dev->rtnl_link_ops; | |
428 | size_t size; | |
429 | ||
430 | if (!ops) | |
431 | return 0; | |
432 | ||
369cf77a TG |
433 | size = nla_total_size(sizeof(struct nlattr)) + /* IFLA_LINKINFO */ |
434 | nla_total_size(strlen(ops->kind) + 1); /* IFLA_INFO_KIND */ | |
38f7b870 PM |
435 | |
436 | if (ops->get_size) | |
437 | /* IFLA_INFO_DATA + nested data */ | |
369cf77a | 438 | size += nla_total_size(sizeof(struct nlattr)) + |
38f7b870 PM |
439 | ops->get_size(dev); |
440 | ||
441 | if (ops->get_xstats_size) | |
369cf77a TG |
442 | /* IFLA_INFO_XSTATS */ |
443 | size += nla_total_size(ops->get_xstats_size(dev)); | |
38f7b870 | 444 | |
ba7d49b1 JP |
445 | size += rtnl_link_get_slave_info_data_size(dev); |
446 | ||
38f7b870 PM |
447 | return size; |
448 | } | |
449 | ||
f8ff182c TG |
450 | static LIST_HEAD(rtnl_af_ops); |
451 | ||
452 | static const struct rtnl_af_ops *rtnl_af_lookup(const int family) | |
453 | { | |
454 | const struct rtnl_af_ops *ops; | |
455 | ||
456 | list_for_each_entry(ops, &rtnl_af_ops, list) { | |
457 | if (ops->family == family) | |
458 | return ops; | |
459 | } | |
460 | ||
461 | return NULL; | |
462 | } | |
463 | ||
f8ff182c TG |
464 | /** |
465 | * rtnl_af_register - Register rtnl_af_ops with rtnetlink. | |
466 | * @ops: struct rtnl_af_ops * to register | |
467 | * | |
468 | * Returns 0 on success or a negative error code. | |
469 | */ | |
3678a9d8 | 470 | void rtnl_af_register(struct rtnl_af_ops *ops) |
f8ff182c | 471 | { |
f8ff182c | 472 | rtnl_lock(); |
3678a9d8 | 473 | list_add_tail(&ops->list, &rtnl_af_ops); |
f8ff182c | 474 | rtnl_unlock(); |
f8ff182c TG |
475 | } |
476 | EXPORT_SYMBOL_GPL(rtnl_af_register); | |
477 | ||
478 | /** | |
479 | * __rtnl_af_unregister - Unregister rtnl_af_ops from rtnetlink. | |
480 | * @ops: struct rtnl_af_ops * to unregister | |
481 | * | |
482 | * The caller must hold the rtnl_mutex. | |
483 | */ | |
484 | void __rtnl_af_unregister(struct rtnl_af_ops *ops) | |
485 | { | |
486 | list_del(&ops->list); | |
487 | } | |
488 | EXPORT_SYMBOL_GPL(__rtnl_af_unregister); | |
489 | ||
490 | /** | |
491 | * rtnl_af_unregister - Unregister rtnl_af_ops from rtnetlink. | |
492 | * @ops: struct rtnl_af_ops * to unregister | |
493 | */ | |
494 | void rtnl_af_unregister(struct rtnl_af_ops *ops) | |
495 | { | |
496 | rtnl_lock(); | |
497 | __rtnl_af_unregister(ops); | |
498 | rtnl_unlock(); | |
499 | } | |
500 | EXPORT_SYMBOL_GPL(rtnl_af_unregister); | |
501 | ||
b1974ed0 AR |
502 | static size_t rtnl_link_get_af_size(const struct net_device *dev, |
503 | u32 ext_filter_mask) | |
f8ff182c TG |
504 | { |
505 | struct rtnl_af_ops *af_ops; | |
506 | size_t size; | |
507 | ||
508 | /* IFLA_AF_SPEC */ | |
509 | size = nla_total_size(sizeof(struct nlattr)); | |
510 | ||
511 | list_for_each_entry(af_ops, &rtnl_af_ops, list) { | |
512 | if (af_ops->get_link_af_size) { | |
513 | /* AF_* + nested data */ | |
514 | size += nla_total_size(sizeof(struct nlattr)) + | |
b1974ed0 | 515 | af_ops->get_link_af_size(dev, ext_filter_mask); |
f8ff182c TG |
516 | } |
517 | } | |
518 | ||
519 | return size; | |
520 | } | |
521 | ||
ba7d49b1 | 522 | static bool rtnl_have_link_slave_info(const struct net_device *dev) |
38f7b870 | 523 | { |
ba7d49b1 | 524 | struct net_device *master_dev; |
38f7b870 | 525 | |
ba7d49b1 | 526 | master_dev = netdev_master_upper_dev_get((struct net_device *) dev); |
813f020c | 527 | if (master_dev && master_dev->rtnl_link_ops) |
ba7d49b1 JP |
528 | return true; |
529 | return false; | |
530 | } | |
531 | ||
532 | static int rtnl_link_slave_info_fill(struct sk_buff *skb, | |
533 | const struct net_device *dev) | |
534 | { | |
535 | struct net_device *master_dev; | |
536 | const struct rtnl_link_ops *ops; | |
537 | struct nlattr *slave_data; | |
538 | int err; | |
38f7b870 | 539 | |
ba7d49b1 JP |
540 | master_dev = netdev_master_upper_dev_get((struct net_device *) dev); |
541 | if (!master_dev) | |
542 | return 0; | |
543 | ops = master_dev->rtnl_link_ops; | |
544 | if (!ops) | |
545 | return 0; | |
546 | if (nla_put_string(skb, IFLA_INFO_SLAVE_KIND, ops->kind) < 0) | |
547 | return -EMSGSIZE; | |
548 | if (ops->fill_slave_info) { | |
549 | slave_data = nla_nest_start(skb, IFLA_INFO_SLAVE_DATA); | |
550 | if (!slave_data) | |
551 | return -EMSGSIZE; | |
552 | err = ops->fill_slave_info(skb, master_dev, dev); | |
553 | if (err < 0) | |
554 | goto err_cancel_slave_data; | |
555 | nla_nest_end(skb, slave_data); | |
556 | } | |
557 | return 0; | |
558 | ||
559 | err_cancel_slave_data: | |
560 | nla_nest_cancel(skb, slave_data); | |
561 | return err; | |
562 | } | |
563 | ||
564 | static int rtnl_link_info_fill(struct sk_buff *skb, | |
565 | const struct net_device *dev) | |
566 | { | |
567 | const struct rtnl_link_ops *ops = dev->rtnl_link_ops; | |
568 | struct nlattr *data; | |
569 | int err; | |
570 | ||
571 | if (!ops) | |
572 | return 0; | |
38f7b870 | 573 | if (nla_put_string(skb, IFLA_INFO_KIND, ops->kind) < 0) |
ba7d49b1 | 574 | return -EMSGSIZE; |
38f7b870 PM |
575 | if (ops->fill_xstats) { |
576 | err = ops->fill_xstats(skb, dev); | |
577 | if (err < 0) | |
ba7d49b1 | 578 | return err; |
38f7b870 PM |
579 | } |
580 | if (ops->fill_info) { | |
581 | data = nla_nest_start(skb, IFLA_INFO_DATA); | |
ba7d49b1 JP |
582 | if (data == NULL) |
583 | return -EMSGSIZE; | |
38f7b870 PM |
584 | err = ops->fill_info(skb, dev); |
585 | if (err < 0) | |
586 | goto err_cancel_data; | |
587 | nla_nest_end(skb, data); | |
588 | } | |
38f7b870 PM |
589 | return 0; |
590 | ||
591 | err_cancel_data: | |
592 | nla_nest_cancel(skb, data); | |
ba7d49b1 JP |
593 | return err; |
594 | } | |
595 | ||
596 | static int rtnl_link_fill(struct sk_buff *skb, const struct net_device *dev) | |
597 | { | |
598 | struct nlattr *linkinfo; | |
599 | int err = -EMSGSIZE; | |
600 | ||
601 | linkinfo = nla_nest_start(skb, IFLA_LINKINFO); | |
602 | if (linkinfo == NULL) | |
603 | goto out; | |
604 | ||
605 | err = rtnl_link_info_fill(skb, dev); | |
606 | if (err < 0) | |
607 | goto err_cancel_link; | |
608 | ||
609 | err = rtnl_link_slave_info_fill(skb, dev); | |
610 | if (err < 0) | |
611 | goto err_cancel_link; | |
612 | ||
613 | nla_nest_end(skb, linkinfo); | |
614 | return 0; | |
615 | ||
38f7b870 PM |
616 | err_cancel_link: |
617 | nla_nest_cancel(skb, linkinfo); | |
618 | out: | |
619 | return err; | |
620 | } | |
621 | ||
95c96174 | 622 | int rtnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, unsigned int group, int echo) |
1da177e4 | 623 | { |
97c53cac | 624 | struct sock *rtnl = net->rtnl; |
1da177e4 LT |
625 | int err = 0; |
626 | ||
ac6d439d | 627 | NETLINK_CB(skb).dst_group = group; |
1da177e4 | 628 | if (echo) |
63354797 | 629 | refcount_inc(&skb->users); |
1da177e4 LT |
630 | netlink_broadcast(rtnl, skb, pid, group, GFP_KERNEL); |
631 | if (echo) | |
632 | err = netlink_unicast(rtnl, skb, pid, MSG_DONTWAIT); | |
633 | return err; | |
634 | } | |
635 | ||
97c53cac | 636 | int rtnl_unicast(struct sk_buff *skb, struct net *net, u32 pid) |
2942e900 | 637 | { |
97c53cac DL |
638 | struct sock *rtnl = net->rtnl; |
639 | ||
2942e900 TG |
640 | return nlmsg_unicast(rtnl, skb, pid); |
641 | } | |
e0d087af | 642 | EXPORT_SYMBOL(rtnl_unicast); |
2942e900 | 643 | |
1ce85fe4 PNA |
644 | void rtnl_notify(struct sk_buff *skb, struct net *net, u32 pid, u32 group, |
645 | struct nlmsghdr *nlh, gfp_t flags) | |
97676b6b | 646 | { |
97c53cac | 647 | struct sock *rtnl = net->rtnl; |
97676b6b TG |
648 | int report = 0; |
649 | ||
650 | if (nlh) | |
651 | report = nlmsg_report(nlh); | |
652 | ||
1ce85fe4 | 653 | nlmsg_notify(rtnl, skb, pid, group, report, flags); |
97676b6b | 654 | } |
e0d087af | 655 | EXPORT_SYMBOL(rtnl_notify); |
97676b6b | 656 | |
97c53cac | 657 | void rtnl_set_sk_err(struct net *net, u32 group, int error) |
97676b6b | 658 | { |
97c53cac DL |
659 | struct sock *rtnl = net->rtnl; |
660 | ||
97676b6b TG |
661 | netlink_set_err(rtnl, 0, group, error); |
662 | } | |
e0d087af | 663 | EXPORT_SYMBOL(rtnl_set_sk_err); |
97676b6b | 664 | |
1da177e4 LT |
665 | int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics) |
666 | { | |
2d7202bf TG |
667 | struct nlattr *mx; |
668 | int i, valid = 0; | |
669 | ||
670 | mx = nla_nest_start(skb, RTA_METRICS); | |
671 | if (mx == NULL) | |
672 | return -ENOBUFS; | |
673 | ||
674 | for (i = 0; i < RTAX_MAX; i++) { | |
675 | if (metrics[i]) { | |
ea697639 DB |
676 | if (i == RTAX_CC_ALGO - 1) { |
677 | char tmp[TCP_CA_NAME_MAX], *name; | |
678 | ||
679 | name = tcp_ca_get_name_by_key(metrics[i], tmp); | |
680 | if (!name) | |
681 | continue; | |
682 | if (nla_put_string(skb, i + 1, name)) | |
683 | goto nla_put_failure; | |
c3a8d947 DB |
684 | } else if (i == RTAX_FEATURES - 1) { |
685 | u32 user_features = metrics[i] & RTAX_FEATURE_MASK; | |
686 | ||
f8edcd12 PS |
687 | if (!user_features) |
688 | continue; | |
c3a8d947 DB |
689 | BUILD_BUG_ON(RTAX_FEATURE_MASK & DST_FEATURE_MASK); |
690 | if (nla_put_u32(skb, i + 1, user_features)) | |
691 | goto nla_put_failure; | |
ea697639 DB |
692 | } else { |
693 | if (nla_put_u32(skb, i + 1, metrics[i])) | |
694 | goto nla_put_failure; | |
695 | } | |
2d7202bf | 696 | valid++; |
2d7202bf | 697 | } |
1da177e4 | 698 | } |
1da177e4 | 699 | |
a57d27fc DM |
700 | if (!valid) { |
701 | nla_nest_cancel(skb, mx); | |
702 | return 0; | |
703 | } | |
2d7202bf TG |
704 | |
705 | return nla_nest_end(skb, mx); | |
706 | ||
707 | nla_put_failure: | |
bc3ed28c TG |
708 | nla_nest_cancel(skb, mx); |
709 | return -EMSGSIZE; | |
1da177e4 | 710 | } |
e0d087af | 711 | EXPORT_SYMBOL(rtnetlink_put_metrics); |
1da177e4 | 712 | |
e3703b3d | 713 | int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst, u32 id, |
87a50699 | 714 | long expires, u32 error) |
e3703b3d TG |
715 | { |
716 | struct rta_cacheinfo ci = { | |
a399a805 | 717 | .rta_lastuse = jiffies_delta_to_clock_t(jiffies - dst->lastuse), |
e3703b3d TG |
718 | .rta_used = dst->__use, |
719 | .rta_clntref = atomic_read(&(dst->__refcnt)), | |
720 | .rta_error = error, | |
721 | .rta_id = id, | |
e3703b3d TG |
722 | }; |
723 | ||
8253947e LW |
724 | if (expires) { |
725 | unsigned long clock; | |
e3703b3d | 726 | |
8253947e LW |
727 | clock = jiffies_to_clock_t(abs(expires)); |
728 | clock = min_t(unsigned long, clock, INT_MAX); | |
729 | ci.rta_expires = (expires > 0) ? clock : -clock; | |
730 | } | |
e3703b3d TG |
731 | return nla_put(skb, RTA_CACHEINFO, sizeof(ci), &ci); |
732 | } | |
e3703b3d | 733 | EXPORT_SYMBOL_GPL(rtnl_put_cacheinfo); |
1da177e4 | 734 | |
93b2d4a2 | 735 | static void set_operstate(struct net_device *dev, unsigned char transition) |
b00055aa SR |
736 | { |
737 | unsigned char operstate = dev->operstate; | |
738 | ||
e0d087af | 739 | switch (transition) { |
b00055aa SR |
740 | case IF_OPER_UP: |
741 | if ((operstate == IF_OPER_DORMANT || | |
742 | operstate == IF_OPER_UNKNOWN) && | |
743 | !netif_dormant(dev)) | |
744 | operstate = IF_OPER_UP; | |
745 | break; | |
746 | ||
747 | case IF_OPER_DORMANT: | |
748 | if (operstate == IF_OPER_UP || | |
749 | operstate == IF_OPER_UNKNOWN) | |
750 | operstate = IF_OPER_DORMANT; | |
751 | break; | |
3ff50b79 | 752 | } |
b00055aa SR |
753 | |
754 | if (dev->operstate != operstate) { | |
755 | write_lock_bh(&dev_base_lock); | |
756 | dev->operstate = operstate; | |
757 | write_unlock_bh(&dev_base_lock); | |
93b2d4a2 DM |
758 | netdev_state_change(dev); |
759 | } | |
b00055aa SR |
760 | } |
761 | ||
b1beb681 JB |
762 | static unsigned int rtnl_dev_get_flags(const struct net_device *dev) |
763 | { | |
764 | return (dev->flags & ~(IFF_PROMISC | IFF_ALLMULTI)) | | |
765 | (dev->gflags & (IFF_PROMISC | IFF_ALLMULTI)); | |
766 | } | |
767 | ||
3729d502 PM |
768 | static unsigned int rtnl_dev_combine_flags(const struct net_device *dev, |
769 | const struct ifinfomsg *ifm) | |
770 | { | |
771 | unsigned int flags = ifm->ifi_flags; | |
772 | ||
773 | /* bugwards compatibility: ifi_change == 0 is treated as ~0 */ | |
774 | if (ifm->ifi_change) | |
775 | flags = (flags & ifm->ifi_change) | | |
b1beb681 | 776 | (rtnl_dev_get_flags(dev) & ~ifm->ifi_change); |
3729d502 PM |
777 | |
778 | return flags; | |
779 | } | |
780 | ||
b60c5115 | 781 | static void copy_rtnl_link_stats(struct rtnl_link_stats *a, |
be1f3c2c | 782 | const struct rtnl_link_stats64 *b) |
1da177e4 | 783 | { |
b60c5115 TG |
784 | a->rx_packets = b->rx_packets; |
785 | a->tx_packets = b->tx_packets; | |
786 | a->rx_bytes = b->rx_bytes; | |
787 | a->tx_bytes = b->tx_bytes; | |
788 | a->rx_errors = b->rx_errors; | |
789 | a->tx_errors = b->tx_errors; | |
790 | a->rx_dropped = b->rx_dropped; | |
791 | a->tx_dropped = b->tx_dropped; | |
792 | ||
793 | a->multicast = b->multicast; | |
794 | a->collisions = b->collisions; | |
795 | ||
796 | a->rx_length_errors = b->rx_length_errors; | |
797 | a->rx_over_errors = b->rx_over_errors; | |
798 | a->rx_crc_errors = b->rx_crc_errors; | |
799 | a->rx_frame_errors = b->rx_frame_errors; | |
800 | a->rx_fifo_errors = b->rx_fifo_errors; | |
801 | a->rx_missed_errors = b->rx_missed_errors; | |
802 | ||
803 | a->tx_aborted_errors = b->tx_aborted_errors; | |
804 | a->tx_carrier_errors = b->tx_carrier_errors; | |
805 | a->tx_fifo_errors = b->tx_fifo_errors; | |
806 | a->tx_heartbeat_errors = b->tx_heartbeat_errors; | |
807 | a->tx_window_errors = b->tx_window_errors; | |
808 | ||
809 | a->rx_compressed = b->rx_compressed; | |
810 | a->tx_compressed = b->tx_compressed; | |
6e7333d3 JW |
811 | |
812 | a->rx_nohandler = b->rx_nohandler; | |
10708f37 JE |
813 | } |
814 | ||
c02db8c6 | 815 | /* All VF info */ |
115c9b81 GR |
816 | static inline int rtnl_vfinfo_size(const struct net_device *dev, |
817 | u32 ext_filter_mask) | |
ebc08a6f | 818 | { |
9af15c38 | 819 | if (dev->dev.parent && (ext_filter_mask & RTEXT_FILTER_VF)) { |
c02db8c6 | 820 | int num_vfs = dev_num_vf(dev->dev.parent); |
7e75f74a | 821 | size_t size = nla_total_size(0); |
045de01a | 822 | size += num_vfs * |
7e75f74a SD |
823 | (nla_total_size(0) + |
824 | nla_total_size(sizeof(struct ifla_vf_mac)) + | |
825 | nla_total_size(sizeof(struct ifla_vf_vlan)) + | |
826 | nla_total_size(0) + /* nest IFLA_VF_VLAN_LIST */ | |
79aab093 MS |
827 | nla_total_size(MAX_VLAN_LIST_LEN * |
828 | sizeof(struct ifla_vf_vlan_info)) + | |
ed616689 | 829 | nla_total_size(sizeof(struct ifla_vf_spoofchk)) + |
7e75f74a | 830 | nla_total_size(sizeof(struct ifla_vf_tx_rate)) + |
945a3676 | 831 | nla_total_size(sizeof(struct ifla_vf_rate)) + |
01a3d796 | 832 | nla_total_size(sizeof(struct ifla_vf_link_state)) + |
3b766cd8 | 833 | nla_total_size(sizeof(struct ifla_vf_rss_query_en)) + |
7e75f74a | 834 | nla_total_size(0) + /* nest IFLA_VF_STATS */ |
3b766cd8 | 835 | /* IFLA_VF_STATS_RX_PACKETS */ |
343a6d8e | 836 | nla_total_size_64bit(sizeof(__u64)) + |
3b766cd8 | 837 | /* IFLA_VF_STATS_TX_PACKETS */ |
343a6d8e | 838 | nla_total_size_64bit(sizeof(__u64)) + |
3b766cd8 | 839 | /* IFLA_VF_STATS_RX_BYTES */ |
343a6d8e | 840 | nla_total_size_64bit(sizeof(__u64)) + |
3b766cd8 | 841 | /* IFLA_VF_STATS_TX_BYTES */ |
343a6d8e | 842 | nla_total_size_64bit(sizeof(__u64)) + |
3b766cd8 | 843 | /* IFLA_VF_STATS_BROADCAST */ |
343a6d8e | 844 | nla_total_size_64bit(sizeof(__u64)) + |
3b766cd8 | 845 | /* IFLA_VF_STATS_MULTICAST */ |
343a6d8e | 846 | nla_total_size_64bit(sizeof(__u64)) + |
dd461d6a | 847 | nla_total_size(sizeof(struct ifla_vf_trust))); |
c02db8c6 CW |
848 | return size; |
849 | } else | |
ebc08a6f WM |
850 | return 0; |
851 | } | |
852 | ||
c53864fd DG |
853 | static size_t rtnl_port_size(const struct net_device *dev, |
854 | u32 ext_filter_mask) | |
57b61080 SF |
855 | { |
856 | size_t port_size = nla_total_size(4) /* PORT_VF */ | |
857 | + nla_total_size(PORT_PROFILE_MAX) /* PORT_PROFILE */ | |
57b61080 SF |
858 | + nla_total_size(PORT_UUID_MAX) /* PORT_INSTANCE_UUID */ |
859 | + nla_total_size(PORT_UUID_MAX) /* PORT_HOST_UUID */ | |
860 | + nla_total_size(1) /* PROT_VDP_REQUEST */ | |
861 | + nla_total_size(2); /* PORT_VDP_RESPONSE */ | |
862 | size_t vf_ports_size = nla_total_size(sizeof(struct nlattr)); | |
863 | size_t vf_port_size = nla_total_size(sizeof(struct nlattr)) | |
864 | + port_size; | |
865 | size_t port_self_size = nla_total_size(sizeof(struct nlattr)) | |
866 | + port_size; | |
867 | ||
c53864fd DG |
868 | if (!dev->netdev_ops->ndo_get_vf_port || !dev->dev.parent || |
869 | !(ext_filter_mask & RTEXT_FILTER_VF)) | |
57b61080 SF |
870 | return 0; |
871 | if (dev_num_vf(dev->dev.parent)) | |
872 | return port_self_size + vf_ports_size + | |
873 | vf_port_size * dev_num_vf(dev->dev.parent); | |
874 | else | |
875 | return port_self_size; | |
876 | } | |
877 | ||
b5cdae32 | 878 | static size_t rtnl_xdp_size(void) |
d1fdd913 | 879 | { |
b3cfaa31 | 880 | size_t xdp_size = nla_total_size(0) + /* nest IFLA_XDP */ |
58038695 MKL |
881 | nla_total_size(1) + /* XDP_ATTACHED */ |
882 | nla_total_size(4); /* XDP_PROG_ID */ | |
d1fdd913 | 883 | |
b5cdae32 | 884 | return xdp_size; |
d1fdd913 BB |
885 | } |
886 | ||
115c9b81 GR |
887 | static noinline size_t if_nlmsg_size(const struct net_device *dev, |
888 | u32 ext_filter_mask) | |
339bf98f TG |
889 | { |
890 | return NLMSG_ALIGN(sizeof(struct ifinfomsg)) | |
891 | + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */ | |
0b815a1a | 892 | + nla_total_size(IFALIASZ) /* IFLA_IFALIAS */ |
339bf98f | 893 | + nla_total_size(IFNAMSIZ) /* IFLA_QDISC */ |
270cb4d0 | 894 | + nla_total_size_64bit(sizeof(struct rtnl_link_ifmap)) |
339bf98f | 895 | + nla_total_size(sizeof(struct rtnl_link_stats)) |
35c58459 | 896 | + nla_total_size_64bit(sizeof(struct rtnl_link_stats64)) |
339bf98f TG |
897 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */ |
898 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_BROADCAST */ | |
899 | + nla_total_size(4) /* IFLA_TXQLEN */ | |
900 | + nla_total_size(4) /* IFLA_WEIGHT */ | |
901 | + nla_total_size(4) /* IFLA_MTU */ | |
902 | + nla_total_size(4) /* IFLA_LINK */ | |
903 | + nla_total_size(4) /* IFLA_MASTER */ | |
9a57247f | 904 | + nla_total_size(1) /* IFLA_CARRIER */ |
edbc0bb3 | 905 | + nla_total_size(4) /* IFLA_PROMISCUITY */ |
76ff5cc9 JP |
906 | + nla_total_size(4) /* IFLA_NUM_TX_QUEUES */ |
907 | + nla_total_size(4) /* IFLA_NUM_RX_QUEUES */ | |
6919756c TK |
908 | + nla_total_size(4) /* IFLA_GSO_MAX_SEGS */ |
909 | + nla_total_size(4) /* IFLA_GSO_MAX_SIZE */ | |
339bf98f | 910 | + nla_total_size(1) /* IFLA_OPERSTATE */ |
38f7b870 | 911 | + nla_total_size(1) /* IFLA_LINKMODE */ |
2d3b479d | 912 | + nla_total_size(4) /* IFLA_CARRIER_CHANGES */ |
d37512a2 | 913 | + nla_total_size(4) /* IFLA_LINK_NETNSID */ |
db833d40 | 914 | + nla_total_size(4) /* IFLA_GROUP */ |
115c9b81 GR |
915 | + nla_total_size(ext_filter_mask |
916 | & RTEXT_FILTER_VF ? 4 : 0) /* IFLA_NUM_VF */ | |
917 | + rtnl_vfinfo_size(dev, ext_filter_mask) /* IFLA_VFINFO_LIST */ | |
c53864fd | 918 | + rtnl_port_size(dev, ext_filter_mask) /* IFLA_VF_PORTS + IFLA_PORT_SELF */ |
f8ff182c | 919 | + rtnl_link_get_size(dev) /* IFLA_LINKINFO */ |
b1974ed0 | 920 | + rtnl_link_get_af_size(dev, ext_filter_mask) /* IFLA_AF_SPEC */ |
82f28412 | 921 | + nla_total_size(MAX_PHYS_ITEM_ID_LEN) /* IFLA_PHYS_PORT_ID */ |
88d6378b | 922 | + nla_total_size(MAX_PHYS_ITEM_ID_LEN) /* IFLA_PHYS_SWITCH_ID */ |
c57c7a95 | 923 | + nla_total_size(IFNAMSIZ) /* IFLA_PHYS_PORT_NAME */ |
b5cdae32 | 924 | + rtnl_xdp_size() /* IFLA_XDP */ |
3d3ea5af | 925 | + nla_total_size(4) /* IFLA_EVENT */ |
88d6378b AK |
926 | + nla_total_size(1); /* IFLA_PROTO_DOWN */ |
927 | ||
339bf98f TG |
928 | } |
929 | ||
57b61080 SF |
930 | static int rtnl_vf_ports_fill(struct sk_buff *skb, struct net_device *dev) |
931 | { | |
932 | struct nlattr *vf_ports; | |
933 | struct nlattr *vf_port; | |
934 | int vf; | |
935 | int err; | |
936 | ||
937 | vf_ports = nla_nest_start(skb, IFLA_VF_PORTS); | |
938 | if (!vf_ports) | |
939 | return -EMSGSIZE; | |
940 | ||
941 | for (vf = 0; vf < dev_num_vf(dev->dev.parent); vf++) { | |
942 | vf_port = nla_nest_start(skb, IFLA_VF_PORT); | |
8ca94183 SF |
943 | if (!vf_port) |
944 | goto nla_put_failure; | |
a6574349 DM |
945 | if (nla_put_u32(skb, IFLA_PORT_VF, vf)) |
946 | goto nla_put_failure; | |
57b61080 | 947 | err = dev->netdev_ops->ndo_get_vf_port(dev, vf, skb); |
8ca94183 SF |
948 | if (err == -EMSGSIZE) |
949 | goto nla_put_failure; | |
57b61080 | 950 | if (err) { |
57b61080 SF |
951 | nla_nest_cancel(skb, vf_port); |
952 | continue; | |
953 | } | |
954 | nla_nest_end(skb, vf_port); | |
955 | } | |
956 | ||
957 | nla_nest_end(skb, vf_ports); | |
958 | ||
959 | return 0; | |
8ca94183 SF |
960 | |
961 | nla_put_failure: | |
962 | nla_nest_cancel(skb, vf_ports); | |
963 | return -EMSGSIZE; | |
57b61080 SF |
964 | } |
965 | ||
966 | static int rtnl_port_self_fill(struct sk_buff *skb, struct net_device *dev) | |
967 | { | |
968 | struct nlattr *port_self; | |
969 | int err; | |
970 | ||
971 | port_self = nla_nest_start(skb, IFLA_PORT_SELF); | |
972 | if (!port_self) | |
973 | return -EMSGSIZE; | |
974 | ||
975 | err = dev->netdev_ops->ndo_get_vf_port(dev, PORT_SELF_VF, skb); | |
976 | if (err) { | |
977 | nla_nest_cancel(skb, port_self); | |
8ca94183 | 978 | return (err == -EMSGSIZE) ? err : 0; |
57b61080 SF |
979 | } |
980 | ||
981 | nla_nest_end(skb, port_self); | |
982 | ||
983 | return 0; | |
984 | } | |
985 | ||
c53864fd DG |
986 | static int rtnl_port_fill(struct sk_buff *skb, struct net_device *dev, |
987 | u32 ext_filter_mask) | |
57b61080 SF |
988 | { |
989 | int err; | |
990 | ||
c53864fd DG |
991 | if (!dev->netdev_ops->ndo_get_vf_port || !dev->dev.parent || |
992 | !(ext_filter_mask & RTEXT_FILTER_VF)) | |
57b61080 SF |
993 | return 0; |
994 | ||
995 | err = rtnl_port_self_fill(skb, dev); | |
996 | if (err) | |
997 | return err; | |
998 | ||
999 | if (dev_num_vf(dev->dev.parent)) { | |
1000 | err = rtnl_vf_ports_fill(skb, dev); | |
1001 | if (err) | |
1002 | return err; | |
1003 | } | |
1004 | ||
1005 | return 0; | |
1006 | } | |
1007 | ||
66cae9ed JP |
1008 | static int rtnl_phys_port_id_fill(struct sk_buff *skb, struct net_device *dev) |
1009 | { | |
1010 | int err; | |
02637fce | 1011 | struct netdev_phys_item_id ppid; |
66cae9ed JP |
1012 | |
1013 | err = dev_get_phys_port_id(dev, &ppid); | |
1014 | if (err) { | |
1015 | if (err == -EOPNOTSUPP) | |
1016 | return 0; | |
1017 | return err; | |
1018 | } | |
1019 | ||
1020 | if (nla_put(skb, IFLA_PHYS_PORT_ID, ppid.id_len, ppid.id)) | |
1021 | return -EMSGSIZE; | |
1022 | ||
1023 | return 0; | |
1024 | } | |
1025 | ||
db24a904 DA |
1026 | static int rtnl_phys_port_name_fill(struct sk_buff *skb, struct net_device *dev) |
1027 | { | |
1028 | char name[IFNAMSIZ]; | |
1029 | int err; | |
1030 | ||
1031 | err = dev_get_phys_port_name(dev, name, sizeof(name)); | |
1032 | if (err) { | |
1033 | if (err == -EOPNOTSUPP) | |
1034 | return 0; | |
1035 | return err; | |
1036 | } | |
1037 | ||
77ef033b | 1038 | if (nla_put_string(skb, IFLA_PHYS_PORT_NAME, name)) |
db24a904 DA |
1039 | return -EMSGSIZE; |
1040 | ||
1041 | return 0; | |
1042 | } | |
1043 | ||
82f28412 JP |
1044 | static int rtnl_phys_switch_id_fill(struct sk_buff *skb, struct net_device *dev) |
1045 | { | |
1046 | int err; | |
f8e20a9f | 1047 | struct switchdev_attr attr = { |
6ff64f6f | 1048 | .orig_dev = dev, |
1f868398 | 1049 | .id = SWITCHDEV_ATTR_ID_PORT_PARENT_ID, |
f8e20a9f SF |
1050 | .flags = SWITCHDEV_F_NO_RECURSE, |
1051 | }; | |
82f28412 | 1052 | |
f8e20a9f | 1053 | err = switchdev_port_attr_get(dev, &attr); |
82f28412 JP |
1054 | if (err) { |
1055 | if (err == -EOPNOTSUPP) | |
1056 | return 0; | |
1057 | return err; | |
1058 | } | |
1059 | ||
42275bd8 SF |
1060 | if (nla_put(skb, IFLA_PHYS_SWITCH_ID, attr.u.ppid.id_len, |
1061 | attr.u.ppid.id)) | |
82f28412 JP |
1062 | return -EMSGSIZE; |
1063 | ||
1064 | return 0; | |
1065 | } | |
1066 | ||
b22b941b HFS |
1067 | static noinline_for_stack int rtnl_fill_stats(struct sk_buff *skb, |
1068 | struct net_device *dev) | |
1069 | { | |
550bce59 | 1070 | struct rtnl_link_stats64 *sp; |
b22b941b | 1071 | struct nlattr *attr; |
18402843 | 1072 | |
58414d32 ND |
1073 | attr = nla_reserve_64bit(skb, IFLA_STATS64, |
1074 | sizeof(struct rtnl_link_stats64), IFLA_PAD); | |
b22b941b HFS |
1075 | if (!attr) |
1076 | return -EMSGSIZE; | |
1077 | ||
550bce59 RP |
1078 | sp = nla_data(attr); |
1079 | dev_get_stats(dev, sp); | |
b22b941b | 1080 | |
550bce59 RP |
1081 | attr = nla_reserve(skb, IFLA_STATS, |
1082 | sizeof(struct rtnl_link_stats)); | |
b22b941b HFS |
1083 | if (!attr) |
1084 | return -EMSGSIZE; | |
1085 | ||
550bce59 | 1086 | copy_rtnl_link_stats(nla_data(attr), sp); |
b22b941b HFS |
1087 | |
1088 | return 0; | |
1089 | } | |
1090 | ||
1091 | static noinline_for_stack int rtnl_fill_vfinfo(struct sk_buff *skb, | |
1092 | struct net_device *dev, | |
1093 | int vfs_num, | |
1094 | struct nlattr *vfinfo) | |
1095 | { | |
1096 | struct ifla_vf_rss_query_en vf_rss_query_en; | |
79aab093 | 1097 | struct nlattr *vf, *vfstats, *vfvlanlist; |
b22b941b | 1098 | struct ifla_vf_link_state vf_linkstate; |
79aab093 | 1099 | struct ifla_vf_vlan_info vf_vlan_info; |
b22b941b HFS |
1100 | struct ifla_vf_spoofchk vf_spoofchk; |
1101 | struct ifla_vf_tx_rate vf_tx_rate; | |
1102 | struct ifla_vf_stats vf_stats; | |
1103 | struct ifla_vf_trust vf_trust; | |
1104 | struct ifla_vf_vlan vf_vlan; | |
1105 | struct ifla_vf_rate vf_rate; | |
b22b941b HFS |
1106 | struct ifla_vf_mac vf_mac; |
1107 | struct ifla_vf_info ivi; | |
1108 | ||
0eed9cf5 MY |
1109 | memset(&ivi, 0, sizeof(ivi)); |
1110 | ||
b22b941b HFS |
1111 | /* Not all SR-IOV capable drivers support the |
1112 | * spoofcheck and "RSS query enable" query. Preset to | |
1113 | * -1 so the user space tool can detect that the driver | |
1114 | * didn't report anything. | |
1115 | */ | |
1116 | ivi.spoofchk = -1; | |
1117 | ivi.rss_query_en = -1; | |
1118 | ivi.trusted = -1; | |
b22b941b HFS |
1119 | /* The default value for VF link state is "auto" |
1120 | * IFLA_VF_LINK_STATE_AUTO which equals zero | |
1121 | */ | |
1122 | ivi.linkstate = 0; | |
79aab093 MS |
1123 | /* VLAN Protocol by default is 802.1Q */ |
1124 | ivi.vlan_proto = htons(ETH_P_8021Q); | |
b22b941b HFS |
1125 | if (dev->netdev_ops->ndo_get_vf_config(dev, vfs_num, &ivi)) |
1126 | return 0; | |
1127 | ||
775f4f05 DC |
1128 | memset(&vf_vlan_info, 0, sizeof(vf_vlan_info)); |
1129 | ||
b22b941b HFS |
1130 | vf_mac.vf = |
1131 | vf_vlan.vf = | |
79aab093 | 1132 | vf_vlan_info.vf = |
b22b941b HFS |
1133 | vf_rate.vf = |
1134 | vf_tx_rate.vf = | |
1135 | vf_spoofchk.vf = | |
1136 | vf_linkstate.vf = | |
1137 | vf_rss_query_en.vf = | |
1138 | vf_trust.vf = ivi.vf; | |
1139 | ||
1140 | memcpy(vf_mac.mac, ivi.mac, sizeof(ivi.mac)); | |
1141 | vf_vlan.vlan = ivi.vlan; | |
1142 | vf_vlan.qos = ivi.qos; | |
79aab093 MS |
1143 | vf_vlan_info.vlan = ivi.vlan; |
1144 | vf_vlan_info.qos = ivi.qos; | |
1145 | vf_vlan_info.vlan_proto = ivi.vlan_proto; | |
b22b941b HFS |
1146 | vf_tx_rate.rate = ivi.max_tx_rate; |
1147 | vf_rate.min_tx_rate = ivi.min_tx_rate; | |
1148 | vf_rate.max_tx_rate = ivi.max_tx_rate; | |
1149 | vf_spoofchk.setting = ivi.spoofchk; | |
1150 | vf_linkstate.link_state = ivi.linkstate; | |
1151 | vf_rss_query_en.setting = ivi.rss_query_en; | |
1152 | vf_trust.setting = ivi.trusted; | |
1153 | vf = nla_nest_start(skb, IFLA_VF_INFO); | |
79aab093 MS |
1154 | if (!vf) |
1155 | goto nla_put_vfinfo_failure; | |
b22b941b HFS |
1156 | if (nla_put(skb, IFLA_VF_MAC, sizeof(vf_mac), &vf_mac) || |
1157 | nla_put(skb, IFLA_VF_VLAN, sizeof(vf_vlan), &vf_vlan) || | |
1158 | nla_put(skb, IFLA_VF_RATE, sizeof(vf_rate), | |
1159 | &vf_rate) || | |
1160 | nla_put(skb, IFLA_VF_TX_RATE, sizeof(vf_tx_rate), | |
1161 | &vf_tx_rate) || | |
1162 | nla_put(skb, IFLA_VF_SPOOFCHK, sizeof(vf_spoofchk), | |
1163 | &vf_spoofchk) || | |
1164 | nla_put(skb, IFLA_VF_LINK_STATE, sizeof(vf_linkstate), | |
1165 | &vf_linkstate) || | |
1166 | nla_put(skb, IFLA_VF_RSS_QUERY_EN, | |
1167 | sizeof(vf_rss_query_en), | |
1168 | &vf_rss_query_en) || | |
1169 | nla_put(skb, IFLA_VF_TRUST, | |
1170 | sizeof(vf_trust), &vf_trust)) | |
79aab093 MS |
1171 | goto nla_put_vf_failure; |
1172 | vfvlanlist = nla_nest_start(skb, IFLA_VF_VLAN_LIST); | |
1173 | if (!vfvlanlist) | |
1174 | goto nla_put_vf_failure; | |
1175 | if (nla_put(skb, IFLA_VF_VLAN_INFO, sizeof(vf_vlan_info), | |
1176 | &vf_vlan_info)) { | |
1177 | nla_nest_cancel(skb, vfvlanlist); | |
1178 | goto nla_put_vf_failure; | |
1179 | } | |
1180 | nla_nest_end(skb, vfvlanlist); | |
b22b941b HFS |
1181 | memset(&vf_stats, 0, sizeof(vf_stats)); |
1182 | if (dev->netdev_ops->ndo_get_vf_stats) | |
1183 | dev->netdev_ops->ndo_get_vf_stats(dev, vfs_num, | |
1184 | &vf_stats); | |
1185 | vfstats = nla_nest_start(skb, IFLA_VF_STATS); | |
79aab093 MS |
1186 | if (!vfstats) |
1187 | goto nla_put_vf_failure; | |
343a6d8e ND |
1188 | if (nla_put_u64_64bit(skb, IFLA_VF_STATS_RX_PACKETS, |
1189 | vf_stats.rx_packets, IFLA_VF_STATS_PAD) || | |
1190 | nla_put_u64_64bit(skb, IFLA_VF_STATS_TX_PACKETS, | |
1191 | vf_stats.tx_packets, IFLA_VF_STATS_PAD) || | |
1192 | nla_put_u64_64bit(skb, IFLA_VF_STATS_RX_BYTES, | |
1193 | vf_stats.rx_bytes, IFLA_VF_STATS_PAD) || | |
1194 | nla_put_u64_64bit(skb, IFLA_VF_STATS_TX_BYTES, | |
1195 | vf_stats.tx_bytes, IFLA_VF_STATS_PAD) || | |
1196 | nla_put_u64_64bit(skb, IFLA_VF_STATS_BROADCAST, | |
1197 | vf_stats.broadcast, IFLA_VF_STATS_PAD) || | |
1198 | nla_put_u64_64bit(skb, IFLA_VF_STATS_MULTICAST, | |
79aab093 MS |
1199 | vf_stats.multicast, IFLA_VF_STATS_PAD)) { |
1200 | nla_nest_cancel(skb, vfstats); | |
1201 | goto nla_put_vf_failure; | |
1202 | } | |
b22b941b HFS |
1203 | nla_nest_end(skb, vfstats); |
1204 | nla_nest_end(skb, vf); | |
1205 | return 0; | |
79aab093 MS |
1206 | |
1207 | nla_put_vf_failure: | |
1208 | nla_nest_cancel(skb, vf); | |
1209 | nla_put_vfinfo_failure: | |
1210 | nla_nest_cancel(skb, vfinfo); | |
1211 | return -EMSGSIZE; | |
b22b941b HFS |
1212 | } |
1213 | ||
1214 | static int rtnl_fill_link_ifmap(struct sk_buff *skb, struct net_device *dev) | |
1215 | { | |
5f8e4474 KL |
1216 | struct rtnl_link_ifmap map; |
1217 | ||
1218 | memset(&map, 0, sizeof(map)); | |
1219 | map.mem_start = dev->mem_start; | |
1220 | map.mem_end = dev->mem_end; | |
1221 | map.base_addr = dev->base_addr; | |
1222 | map.irq = dev->irq; | |
1223 | map.dma = dev->dma; | |
1224 | map.port = dev->if_port; | |
1225 | ||
270cb4d0 | 1226 | if (nla_put_64bit(skb, IFLA_MAP, sizeof(map), &map, IFLA_PAD)) |
b22b941b HFS |
1227 | return -EMSGSIZE; |
1228 | ||
1229 | return 0; | |
1230 | } | |
1231 | ||
58038695 | 1232 | static u8 rtnl_xdp_attached_mode(struct net_device *dev, u32 *prog_id) |
d67b9cd2 DB |
1233 | { |
1234 | const struct net_device_ops *ops = dev->netdev_ops; | |
58038695 | 1235 | const struct bpf_prog *generic_xdp_prog; |
d67b9cd2 DB |
1236 | |
1237 | ASSERT_RTNL(); | |
1238 | ||
58038695 MKL |
1239 | *prog_id = 0; |
1240 | generic_xdp_prog = rtnl_dereference(dev->xdp_prog); | |
1241 | if (generic_xdp_prog) { | |
1242 | *prog_id = generic_xdp_prog->aux->id; | |
d67b9cd2 | 1243 | return XDP_ATTACHED_SKB; |
58038695 | 1244 | } |
ce158e58 JK |
1245 | if (!ops->ndo_xdp) |
1246 | return XDP_ATTACHED_NONE; | |
d67b9cd2 | 1247 | |
ce158e58 | 1248 | return __dev_xdp_attached(dev, ops->ndo_xdp, prog_id); |
d67b9cd2 DB |
1249 | } |
1250 | ||
d1fdd913 BB |
1251 | static int rtnl_xdp_fill(struct sk_buff *skb, struct net_device *dev) |
1252 | { | |
d1fdd913 | 1253 | struct nlattr *xdp; |
58038695 | 1254 | u32 prog_id; |
d1fdd913 BB |
1255 | int err; |
1256 | ||
d1fdd913 BB |
1257 | xdp = nla_nest_start(skb, IFLA_XDP); |
1258 | if (!xdp) | |
1259 | return -EMSGSIZE; | |
d67b9cd2 DB |
1260 | |
1261 | err = nla_put_u8(skb, IFLA_XDP_ATTACHED, | |
58038695 | 1262 | rtnl_xdp_attached_mode(dev, &prog_id)); |
d1fdd913 BB |
1263 | if (err) |
1264 | goto err_cancel; | |
1265 | ||
58038695 MKL |
1266 | if (prog_id) { |
1267 | err = nla_put_u32(skb, IFLA_XDP_PROG_ID, prog_id); | |
1268 | if (err) | |
1269 | goto err_cancel; | |
1270 | } | |
1271 | ||
d1fdd913 BB |
1272 | nla_nest_end(skb, xdp); |
1273 | return 0; | |
1274 | ||
1275 | err_cancel: | |
1276 | nla_nest_cancel(skb, xdp); | |
1277 | return err; | |
1278 | } | |
1279 | ||
3d3ea5af VY |
1280 | static u32 rtnl_get_event(unsigned long event) |
1281 | { | |
1282 | u32 rtnl_event_type = IFLA_EVENT_NONE; | |
1283 | ||
1284 | switch (event) { | |
1285 | case NETDEV_REBOOT: | |
1286 | rtnl_event_type = IFLA_EVENT_REBOOT; | |
1287 | break; | |
1288 | case NETDEV_FEAT_CHANGE: | |
1289 | rtnl_event_type = IFLA_EVENT_FEATURES; | |
1290 | break; | |
1291 | case NETDEV_BONDING_FAILOVER: | |
1292 | rtnl_event_type = IFLA_EVENT_BONDING_FAILOVER; | |
1293 | break; | |
1294 | case NETDEV_NOTIFY_PEERS: | |
1295 | rtnl_event_type = IFLA_EVENT_NOTIFY_PEERS; | |
1296 | break; | |
1297 | case NETDEV_RESEND_IGMP: | |
1298 | rtnl_event_type = IFLA_EVENT_IGMP_RESEND; | |
1299 | break; | |
1300 | case NETDEV_CHANGEINFODATA: | |
1301 | rtnl_event_type = IFLA_EVENT_BONDING_OPTIONS; | |
1302 | break; | |
1303 | default: | |
1304 | break; | |
1305 | } | |
1306 | ||
1307 | return rtnl_event_type; | |
1308 | } | |
1309 | ||
b60c5115 | 1310 | static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev, |
575c3e2a | 1311 | int type, u32 pid, u32 seq, u32 change, |
3d3ea5af VY |
1312 | unsigned int flags, u32 ext_filter_mask, |
1313 | u32 event) | |
b60c5115 TG |
1314 | { |
1315 | struct ifinfomsg *ifm; | |
1316 | struct nlmsghdr *nlh; | |
b22b941b | 1317 | struct nlattr *af_spec; |
f8ff182c | 1318 | struct rtnl_af_ops *af_ops; |
898e5061 | 1319 | struct net_device *upper_dev = netdev_master_upper_dev_get(dev); |
1da177e4 | 1320 | |
2907c35f | 1321 | ASSERT_RTNL(); |
b60c5115 TG |
1322 | nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ifm), flags); |
1323 | if (nlh == NULL) | |
26932566 | 1324 | return -EMSGSIZE; |
1da177e4 | 1325 | |
b60c5115 TG |
1326 | ifm = nlmsg_data(nlh); |
1327 | ifm->ifi_family = AF_UNSPEC; | |
1328 | ifm->__ifi_pad = 0; | |
1329 | ifm->ifi_type = dev->type; | |
1330 | ifm->ifi_index = dev->ifindex; | |
1331 | ifm->ifi_flags = dev_get_flags(dev); | |
1332 | ifm->ifi_change = change; | |
1333 | ||
a6574349 DM |
1334 | if (nla_put_string(skb, IFLA_IFNAME, dev->name) || |
1335 | nla_put_u32(skb, IFLA_TXQLEN, dev->tx_queue_len) || | |
1336 | nla_put_u8(skb, IFLA_OPERSTATE, | |
1337 | netif_running(dev) ? dev->operstate : IF_OPER_DOWN) || | |
1338 | nla_put_u8(skb, IFLA_LINKMODE, dev->link_mode) || | |
1339 | nla_put_u32(skb, IFLA_MTU, dev->mtu) || | |
1340 | nla_put_u32(skb, IFLA_GROUP, dev->group) || | |
edbc0bb3 | 1341 | nla_put_u32(skb, IFLA_PROMISCUITY, dev->promiscuity) || |
76ff5cc9 | 1342 | nla_put_u32(skb, IFLA_NUM_TX_QUEUES, dev->num_tx_queues) || |
c70ce028 ED |
1343 | nla_put_u32(skb, IFLA_GSO_MAX_SEGS, dev->gso_max_segs) || |
1344 | nla_put_u32(skb, IFLA_GSO_MAX_SIZE, dev->gso_max_size) || | |
1d69c2b3 | 1345 | #ifdef CONFIG_RPS |
76ff5cc9 | 1346 | nla_put_u32(skb, IFLA_NUM_RX_QUEUES, dev->num_rx_queues) || |
1d69c2b3 | 1347 | #endif |
a54acb3a ND |
1348 | (dev->ifindex != dev_get_iflink(dev) && |
1349 | nla_put_u32(skb, IFLA_LINK, dev_get_iflink(dev))) || | |
898e5061 JP |
1350 | (upper_dev && |
1351 | nla_put_u32(skb, IFLA_MASTER, upper_dev->ifindex)) || | |
9a57247f | 1352 | nla_put_u8(skb, IFLA_CARRIER, netif_carrier_ok(dev)) || |
a6574349 DM |
1353 | (dev->qdisc && |
1354 | nla_put_string(skb, IFLA_QDISC, dev->qdisc->ops->id)) || | |
1355 | (dev->ifalias && | |
2d3b479d | 1356 | nla_put_string(skb, IFLA_IFALIAS, dev->ifalias)) || |
1357 | nla_put_u32(skb, IFLA_CARRIER_CHANGES, | |
88d6378b AK |
1358 | atomic_read(&dev->carrier_changes)) || |
1359 | nla_put_u8(skb, IFLA_PROTO_DOWN, dev->proto_down)) | |
a6574349 | 1360 | goto nla_put_failure; |
0b815a1a | 1361 | |
3d3ea5af VY |
1362 | if (event != IFLA_EVENT_NONE) { |
1363 | if (nla_put_u32(skb, IFLA_EVENT, event)) | |
1364 | goto nla_put_failure; | |
1365 | } | |
1366 | ||
b22b941b HFS |
1367 | if (rtnl_fill_link_ifmap(skb, dev)) |
1368 | goto nla_put_failure; | |
1da177e4 LT |
1369 | |
1370 | if (dev->addr_len) { | |
a6574349 DM |
1371 | if (nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr) || |
1372 | nla_put(skb, IFLA_BROADCAST, dev->addr_len, dev->broadcast)) | |
1373 | goto nla_put_failure; | |
1da177e4 LT |
1374 | } |
1375 | ||
66cae9ed JP |
1376 | if (rtnl_phys_port_id_fill(skb, dev)) |
1377 | goto nla_put_failure; | |
1378 | ||
db24a904 DA |
1379 | if (rtnl_phys_port_name_fill(skb, dev)) |
1380 | goto nla_put_failure; | |
1381 | ||
82f28412 JP |
1382 | if (rtnl_phys_switch_id_fill(skb, dev)) |
1383 | goto nla_put_failure; | |
1384 | ||
b22b941b | 1385 | if (rtnl_fill_stats(skb, dev)) |
10708f37 | 1386 | goto nla_put_failure; |
10708f37 | 1387 | |
a6574349 DM |
1388 | if (dev->dev.parent && (ext_filter_mask & RTEXT_FILTER_VF) && |
1389 | nla_put_u32(skb, IFLA_NUM_VF, dev_num_vf(dev->dev.parent))) | |
1390 | goto nla_put_failure; | |
57b61080 | 1391 | |
b22b941b HFS |
1392 | if (dev->netdev_ops->ndo_get_vf_config && dev->dev.parent && |
1393 | ext_filter_mask & RTEXT_FILTER_VF) { | |
ebc08a6f | 1394 | int i; |
b22b941b | 1395 | struct nlattr *vfinfo; |
c02db8c6 CW |
1396 | int num_vfs = dev_num_vf(dev->dev.parent); |
1397 | ||
c02db8c6 CW |
1398 | vfinfo = nla_nest_start(skb, IFLA_VFINFO_LIST); |
1399 | if (!vfinfo) | |
1400 | goto nla_put_failure; | |
1401 | for (i = 0; i < num_vfs; i++) { | |
b22b941b | 1402 | if (rtnl_fill_vfinfo(skb, dev, i, vfinfo)) |
3b766cd8 | 1403 | goto nla_put_failure; |
ebc08a6f | 1404 | } |
b22b941b | 1405 | |
c02db8c6 | 1406 | nla_nest_end(skb, vfinfo); |
ebc08a6f | 1407 | } |
57b61080 | 1408 | |
c53864fd | 1409 | if (rtnl_port_fill(skb, dev, ext_filter_mask)) |
57b61080 SF |
1410 | goto nla_put_failure; |
1411 | ||
d1fdd913 BB |
1412 | if (rtnl_xdp_fill(skb, dev)) |
1413 | goto nla_put_failure; | |
1414 | ||
ba7d49b1 | 1415 | if (dev->rtnl_link_ops || rtnl_have_link_slave_info(dev)) { |
38f7b870 PM |
1416 | if (rtnl_link_fill(skb, dev) < 0) |
1417 | goto nla_put_failure; | |
1418 | } | |
1419 | ||
d37512a2 ND |
1420 | if (dev->rtnl_link_ops && |
1421 | dev->rtnl_link_ops->get_link_net) { | |
1422 | struct net *link_net = dev->rtnl_link_ops->get_link_net(dev); | |
1423 | ||
1424 | if (!net_eq(dev_net(dev), link_net)) { | |
7a0877d4 | 1425 | int id = peernet2id_alloc(dev_net(dev), link_net); |
d37512a2 ND |
1426 | |
1427 | if (nla_put_s32(skb, IFLA_LINK_NETNSID, id)) | |
1428 | goto nla_put_failure; | |
1429 | } | |
1430 | } | |
1431 | ||
f8ff182c TG |
1432 | if (!(af_spec = nla_nest_start(skb, IFLA_AF_SPEC))) |
1433 | goto nla_put_failure; | |
1434 | ||
1435 | list_for_each_entry(af_ops, &rtnl_af_ops, list) { | |
1436 | if (af_ops->fill_link_af) { | |
1437 | struct nlattr *af; | |
1438 | int err; | |
1439 | ||
1440 | if (!(af = nla_nest_start(skb, af_ops->family))) | |
1441 | goto nla_put_failure; | |
1442 | ||
d5566fd7 | 1443 | err = af_ops->fill_link_af(skb, dev, ext_filter_mask); |
f8ff182c TG |
1444 | |
1445 | /* | |
1446 | * Caller may return ENODATA to indicate that there | |
1447 | * was no data to be dumped. This is not an error, it | |
1448 | * means we should trim the attribute header and | |
1449 | * continue. | |
1450 | */ | |
1451 | if (err == -ENODATA) | |
1452 | nla_nest_cancel(skb, af); | |
1453 | else if (err < 0) | |
1454 | goto nla_put_failure; | |
1455 | ||
1456 | nla_nest_end(skb, af); | |
1457 | } | |
1458 | } | |
1459 | ||
1460 | nla_nest_end(skb, af_spec); | |
1461 | ||
053c095a JB |
1462 | nlmsg_end(skb, nlh); |
1463 | return 0; | |
b60c5115 TG |
1464 | |
1465 | nla_put_failure: | |
26932566 PM |
1466 | nlmsg_cancel(skb, nlh); |
1467 | return -EMSGSIZE; | |
1da177e4 LT |
1468 | } |
1469 | ||
f7b12606 | 1470 | static const struct nla_policy ifla_policy[IFLA_MAX+1] = { |
5176f91e | 1471 | [IFLA_IFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ-1 }, |
38f7b870 PM |
1472 | [IFLA_ADDRESS] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN }, |
1473 | [IFLA_BROADCAST] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN }, | |
5176f91e | 1474 | [IFLA_MAP] = { .len = sizeof(struct rtnl_link_ifmap) }, |
da5e0494 | 1475 | [IFLA_MTU] = { .type = NLA_U32 }, |
76e87306 | 1476 | [IFLA_LINK] = { .type = NLA_U32 }, |
fbaec0ea | 1477 | [IFLA_MASTER] = { .type = NLA_U32 }, |
9a57247f | 1478 | [IFLA_CARRIER] = { .type = NLA_U8 }, |
da5e0494 TG |
1479 | [IFLA_TXQLEN] = { .type = NLA_U32 }, |
1480 | [IFLA_WEIGHT] = { .type = NLA_U32 }, | |
1481 | [IFLA_OPERSTATE] = { .type = NLA_U8 }, | |
1482 | [IFLA_LINKMODE] = { .type = NLA_U8 }, | |
76e87306 | 1483 | [IFLA_LINKINFO] = { .type = NLA_NESTED }, |
d8a5ec67 | 1484 | [IFLA_NET_NS_PID] = { .type = NLA_U32 }, |
f0630529 | 1485 | [IFLA_NET_NS_FD] = { .type = NLA_U32 }, |
2459b4c6 ND |
1486 | /* IFLA_IFALIAS is a string, but policy is set to NLA_BINARY to |
1487 | * allow 0-length string (needed to remove an alias). | |
1488 | */ | |
1489 | [IFLA_IFALIAS] = { .type = NLA_BINARY, .len = IFALIASZ - 1 }, | |
c02db8c6 | 1490 | [IFLA_VFINFO_LIST] = {. type = NLA_NESTED }, |
57b61080 SF |
1491 | [IFLA_VF_PORTS] = { .type = NLA_NESTED }, |
1492 | [IFLA_PORT_SELF] = { .type = NLA_NESTED }, | |
f8ff182c | 1493 | [IFLA_AF_SPEC] = { .type = NLA_NESTED }, |
115c9b81 | 1494 | [IFLA_EXT_MASK] = { .type = NLA_U32 }, |
edbc0bb3 | 1495 | [IFLA_PROMISCUITY] = { .type = NLA_U32 }, |
76ff5cc9 JP |
1496 | [IFLA_NUM_TX_QUEUES] = { .type = NLA_U32 }, |
1497 | [IFLA_NUM_RX_QUEUES] = { .type = NLA_U32 }, | |
02637fce | 1498 | [IFLA_PHYS_PORT_ID] = { .type = NLA_BINARY, .len = MAX_PHYS_ITEM_ID_LEN }, |
2d3b479d | 1499 | [IFLA_CARRIER_CHANGES] = { .type = NLA_U32 }, /* ignored */ |
82f28412 | 1500 | [IFLA_PHYS_SWITCH_ID] = { .type = NLA_BINARY, .len = MAX_PHYS_ITEM_ID_LEN }, |
317f4810 | 1501 | [IFLA_LINK_NETNSID] = { .type = NLA_S32 }, |
88d6378b | 1502 | [IFLA_PROTO_DOWN] = { .type = NLA_U8 }, |
d1fdd913 | 1503 | [IFLA_XDP] = { .type = NLA_NESTED }, |
3d3ea5af | 1504 | [IFLA_EVENT] = { .type = NLA_U32 }, |
db833d40 | 1505 | [IFLA_GROUP] = { .type = NLA_U32 }, |
da5e0494 TG |
1506 | }; |
1507 | ||
38f7b870 PM |
1508 | static const struct nla_policy ifla_info_policy[IFLA_INFO_MAX+1] = { |
1509 | [IFLA_INFO_KIND] = { .type = NLA_STRING }, | |
1510 | [IFLA_INFO_DATA] = { .type = NLA_NESTED }, | |
ba7d49b1 JP |
1511 | [IFLA_INFO_SLAVE_KIND] = { .type = NLA_STRING }, |
1512 | [IFLA_INFO_SLAVE_DATA] = { .type = NLA_NESTED }, | |
38f7b870 PM |
1513 | }; |
1514 | ||
c02db8c6 | 1515 | static const struct nla_policy ifla_vf_policy[IFLA_VF_MAX+1] = { |
364d5716 DB |
1516 | [IFLA_VF_MAC] = { .len = sizeof(struct ifla_vf_mac) }, |
1517 | [IFLA_VF_VLAN] = { .len = sizeof(struct ifla_vf_vlan) }, | |
79aab093 | 1518 | [IFLA_VF_VLAN_LIST] = { .type = NLA_NESTED }, |
364d5716 DB |
1519 | [IFLA_VF_TX_RATE] = { .len = sizeof(struct ifla_vf_tx_rate) }, |
1520 | [IFLA_VF_SPOOFCHK] = { .len = sizeof(struct ifla_vf_spoofchk) }, | |
1521 | [IFLA_VF_RATE] = { .len = sizeof(struct ifla_vf_rate) }, | |
1522 | [IFLA_VF_LINK_STATE] = { .len = sizeof(struct ifla_vf_link_state) }, | |
01a3d796 | 1523 | [IFLA_VF_RSS_QUERY_EN] = { .len = sizeof(struct ifla_vf_rss_query_en) }, |
3b766cd8 | 1524 | [IFLA_VF_STATS] = { .type = NLA_NESTED }, |
dd461d6a | 1525 | [IFLA_VF_TRUST] = { .len = sizeof(struct ifla_vf_trust) }, |
cc8e27cc EC |
1526 | [IFLA_VF_IB_NODE_GUID] = { .len = sizeof(struct ifla_vf_guid) }, |
1527 | [IFLA_VF_IB_PORT_GUID] = { .len = sizeof(struct ifla_vf_guid) }, | |
3b766cd8 EBE |
1528 | }; |
1529 | ||
57b61080 SF |
1530 | static const struct nla_policy ifla_port_policy[IFLA_PORT_MAX+1] = { |
1531 | [IFLA_PORT_VF] = { .type = NLA_U32 }, | |
1532 | [IFLA_PORT_PROFILE] = { .type = NLA_STRING, | |
1533 | .len = PORT_PROFILE_MAX }, | |
57b61080 SF |
1534 | [IFLA_PORT_INSTANCE_UUID] = { .type = NLA_BINARY, |
1535 | .len = PORT_UUID_MAX }, | |
1536 | [IFLA_PORT_HOST_UUID] = { .type = NLA_STRING, | |
1537 | .len = PORT_UUID_MAX }, | |
1538 | [IFLA_PORT_REQUEST] = { .type = NLA_U8, }, | |
1539 | [IFLA_PORT_RESPONSE] = { .type = NLA_U16, }, | |
025331df DB |
1540 | |
1541 | /* Unused, but we need to keep it here since user space could | |
1542 | * fill it. It's also broken with regard to NLA_BINARY use in | |
1543 | * combination with structs. | |
1544 | */ | |
1545 | [IFLA_PORT_VSI_TYPE] = { .type = NLA_BINARY, | |
1546 | .len = sizeof(struct ifla_port_vsi) }, | |
57b61080 SF |
1547 | }; |
1548 | ||
d1fdd913 BB |
1549 | static const struct nla_policy ifla_xdp_policy[IFLA_XDP_MAX + 1] = { |
1550 | [IFLA_XDP_FD] = { .type = NLA_S32 }, | |
1551 | [IFLA_XDP_ATTACHED] = { .type = NLA_U8 }, | |
85de8576 | 1552 | [IFLA_XDP_FLAGS] = { .type = NLA_U32 }, |
58038695 | 1553 | [IFLA_XDP_PROG_ID] = { .type = NLA_U32 }, |
d1fdd913 BB |
1554 | }; |
1555 | ||
dc599f76 DA |
1556 | static const struct rtnl_link_ops *linkinfo_to_kind_ops(const struct nlattr *nla) |
1557 | { | |
1558 | const struct rtnl_link_ops *ops = NULL; | |
1559 | struct nlattr *linfo[IFLA_INFO_MAX + 1]; | |
1560 | ||
fceb6435 JB |
1561 | if (nla_parse_nested(linfo, IFLA_INFO_MAX, nla, |
1562 | ifla_info_policy, NULL) < 0) | |
dc599f76 DA |
1563 | return NULL; |
1564 | ||
1565 | if (linfo[IFLA_INFO_KIND]) { | |
1566 | char kind[MODULE_NAME_LEN]; | |
1567 | ||
1568 | nla_strlcpy(kind, linfo[IFLA_INFO_KIND], sizeof(kind)); | |
1569 | ops = rtnl_link_ops_get(kind); | |
1570 | } | |
1571 | ||
1572 | return ops; | |
1573 | } | |
1574 | ||
1575 | static bool link_master_filtered(struct net_device *dev, int master_idx) | |
1576 | { | |
1577 | struct net_device *master; | |
1578 | ||
1579 | if (!master_idx) | |
1580 | return false; | |
1581 | ||
1582 | master = netdev_master_upper_dev_get(dev); | |
1583 | if (!master || master->ifindex != master_idx) | |
1584 | return true; | |
1585 | ||
1586 | return false; | |
1587 | } | |
1588 | ||
1589 | static bool link_kind_filtered(const struct net_device *dev, | |
1590 | const struct rtnl_link_ops *kind_ops) | |
1591 | { | |
1592 | if (kind_ops && dev->rtnl_link_ops != kind_ops) | |
1593 | return true; | |
1594 | ||
1595 | return false; | |
1596 | } | |
1597 | ||
1598 | static bool link_dump_filtered(struct net_device *dev, | |
1599 | int master_idx, | |
1600 | const struct rtnl_link_ops *kind_ops) | |
1601 | { | |
1602 | if (link_master_filtered(dev, master_idx) || | |
1603 | link_kind_filtered(dev, kind_ops)) | |
1604 | return true; | |
1605 | ||
1606 | return false; | |
1607 | } | |
1608 | ||
f7b12606 JP |
1609 | static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb) |
1610 | { | |
1611 | struct net *net = sock_net(skb->sk); | |
1612 | int h, s_h; | |
1613 | int idx = 0, s_idx; | |
1614 | struct net_device *dev; | |
1615 | struct hlist_head *head; | |
1616 | struct nlattr *tb[IFLA_MAX+1]; | |
1617 | u32 ext_filter_mask = 0; | |
dc599f76 DA |
1618 | const struct rtnl_link_ops *kind_ops = NULL; |
1619 | unsigned int flags = NLM_F_MULTI; | |
1620 | int master_idx = 0; | |
973462bb | 1621 | int err; |
e5eca6d4 | 1622 | int hdrlen; |
f7b12606 JP |
1623 | |
1624 | s_h = cb->args[0]; | |
1625 | s_idx = cb->args[1]; | |
1626 | ||
e5eca6d4 MS |
1627 | /* A hack to preserve kernel<->userspace interface. |
1628 | * The correct header is ifinfomsg. It is consistent with rtnl_getlink. | |
1629 | * However, before Linux v3.9 the code here assumed rtgenmsg and that's | |
1630 | * what iproute2 < v3.9.0 used. | |
1631 | * We can detect the old iproute2. Even including the IFLA_EXT_MASK | |
1632 | * attribute, its netlink message is shorter than struct ifinfomsg. | |
1633 | */ | |
1634 | hdrlen = nlmsg_len(cb->nlh) < sizeof(struct ifinfomsg) ? | |
1635 | sizeof(struct rtgenmsg) : sizeof(struct ifinfomsg); | |
1636 | ||
fceb6435 JB |
1637 | if (nlmsg_parse(cb->nlh, hdrlen, tb, IFLA_MAX, |
1638 | ifla_policy, NULL) >= 0) { | |
f7b12606 JP |
1639 | if (tb[IFLA_EXT_MASK]) |
1640 | ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]); | |
dc599f76 DA |
1641 | |
1642 | if (tb[IFLA_MASTER]) | |
1643 | master_idx = nla_get_u32(tb[IFLA_MASTER]); | |
1644 | ||
1645 | if (tb[IFLA_LINKINFO]) | |
1646 | kind_ops = linkinfo_to_kind_ops(tb[IFLA_LINKINFO]); | |
1647 | ||
1648 | if (master_idx || kind_ops) | |
1649 | flags |= NLM_F_DUMP_FILTERED; | |
f7b12606 JP |
1650 | } |
1651 | ||
1652 | for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) { | |
1653 | idx = 0; | |
1654 | head = &net->dev_index_head[h]; | |
cac5e65e | 1655 | hlist_for_each_entry(dev, head, index_hlist) { |
dc599f76 | 1656 | if (link_dump_filtered(dev, master_idx, kind_ops)) |
3f0ae05d | 1657 | goto cont; |
f7b12606 JP |
1658 | if (idx < s_idx) |
1659 | goto cont; | |
973462bb DG |
1660 | err = rtnl_fill_ifinfo(skb, dev, RTM_NEWLINK, |
1661 | NETLINK_CB(cb->skb).portid, | |
1662 | cb->nlh->nlmsg_seq, 0, | |
dc599f76 | 1663 | flags, |
3d3ea5af | 1664 | ext_filter_mask, 0); |
973462bb | 1665 | |
f6c5775f DA |
1666 | if (err < 0) { |
1667 | if (likely(skb->len)) | |
1668 | goto out; | |
1669 | ||
1670 | goto out_err; | |
1671 | } | |
f7b12606 JP |
1672 | cont: |
1673 | idx++; | |
1674 | } | |
1675 | } | |
1676 | out: | |
f6c5775f DA |
1677 | err = skb->len; |
1678 | out_err: | |
f7b12606 JP |
1679 | cb->args[1] = idx; |
1680 | cb->args[0] = h; | |
d0225784 JS |
1681 | cb->seq = net->dev_base_seq; |
1682 | nl_dump_check_consistent(cb, nlmsg_hdr(skb)); | |
f7b12606 | 1683 | |
f6c5775f | 1684 | return err; |
f7b12606 JP |
1685 | } |
1686 | ||
fceb6435 JB |
1687 | int rtnl_nla_parse_ifla(struct nlattr **tb, const struct nlattr *head, int len, |
1688 | struct netlink_ext_ack *exterr) | |
f7b12606 | 1689 | { |
fceb6435 | 1690 | return nla_parse(tb, IFLA_MAX, head, len, ifla_policy, exterr); |
f7b12606 JP |
1691 | } |
1692 | EXPORT_SYMBOL(rtnl_nla_parse_ifla); | |
1693 | ||
81adee47 EB |
1694 | struct net *rtnl_link_get_net(struct net *src_net, struct nlattr *tb[]) |
1695 | { | |
1696 | struct net *net; | |
1697 | /* Examine the link attributes and figure out which | |
1698 | * network namespace we are talking about. | |
1699 | */ | |
1700 | if (tb[IFLA_NET_NS_PID]) | |
1701 | net = get_net_ns_by_pid(nla_get_u32(tb[IFLA_NET_NS_PID])); | |
f0630529 EB |
1702 | else if (tb[IFLA_NET_NS_FD]) |
1703 | net = get_net_ns_by_fd(nla_get_u32(tb[IFLA_NET_NS_FD])); | |
81adee47 EB |
1704 | else |
1705 | net = get_net(src_net); | |
1706 | return net; | |
1707 | } | |
1708 | EXPORT_SYMBOL(rtnl_link_get_net); | |
1709 | ||
1840bb13 TG |
1710 | static int validate_linkmsg(struct net_device *dev, struct nlattr *tb[]) |
1711 | { | |
1712 | if (dev) { | |
1713 | if (tb[IFLA_ADDRESS] && | |
1714 | nla_len(tb[IFLA_ADDRESS]) < dev->addr_len) | |
1715 | return -EINVAL; | |
1716 | ||
1717 | if (tb[IFLA_BROADCAST] && | |
1718 | nla_len(tb[IFLA_BROADCAST]) < dev->addr_len) | |
1719 | return -EINVAL; | |
1720 | } | |
1721 | ||
cf7afbfe TG |
1722 | if (tb[IFLA_AF_SPEC]) { |
1723 | struct nlattr *af; | |
1724 | int rem, err; | |
1725 | ||
1726 | nla_for_each_nested(af, tb[IFLA_AF_SPEC], rem) { | |
1727 | const struct rtnl_af_ops *af_ops; | |
1728 | ||
1729 | if (!(af_ops = rtnl_af_lookup(nla_type(af)))) | |
1730 | return -EAFNOSUPPORT; | |
1731 | ||
1732 | if (!af_ops->set_link_af) | |
1733 | return -EOPNOTSUPP; | |
1734 | ||
1735 | if (af_ops->validate_link_af) { | |
6d3a9a68 | 1736 | err = af_ops->validate_link_af(dev, af); |
cf7afbfe TG |
1737 | if (err < 0) |
1738 | return err; | |
1739 | } | |
1740 | } | |
1741 | } | |
1742 | ||
1840bb13 TG |
1743 | return 0; |
1744 | } | |
1745 | ||
cc8e27cc EC |
1746 | static int handle_infiniband_guid(struct net_device *dev, struct ifla_vf_guid *ivt, |
1747 | int guid_type) | |
1748 | { | |
1749 | const struct net_device_ops *ops = dev->netdev_ops; | |
1750 | ||
1751 | return ops->ndo_set_vf_guid(dev, ivt->vf, ivt->guid, guid_type); | |
1752 | } | |
1753 | ||
1754 | static int handle_vf_guid(struct net_device *dev, struct ifla_vf_guid *ivt, int guid_type) | |
1755 | { | |
1756 | if (dev->type != ARPHRD_INFINIBAND) | |
1757 | return -EOPNOTSUPP; | |
1758 | ||
1759 | return handle_infiniband_guid(dev, ivt, guid_type); | |
1760 | } | |
1761 | ||
4f7d2cdf | 1762 | static int do_setvfinfo(struct net_device *dev, struct nlattr **tb) |
c02db8c6 | 1763 | { |
c02db8c6 | 1764 | const struct net_device_ops *ops = dev->netdev_ops; |
4f7d2cdf | 1765 | int err = -EINVAL; |
c02db8c6 | 1766 | |
4f7d2cdf DB |
1767 | if (tb[IFLA_VF_MAC]) { |
1768 | struct ifla_vf_mac *ivm = nla_data(tb[IFLA_VF_MAC]); | |
01a3d796 | 1769 | |
4f7d2cdf DB |
1770 | err = -EOPNOTSUPP; |
1771 | if (ops->ndo_set_vf_mac) | |
1772 | err = ops->ndo_set_vf_mac(dev, ivm->vf, | |
1773 | ivm->mac); | |
1774 | if (err < 0) | |
1775 | return err; | |
1776 | } | |
1777 | ||
1778 | if (tb[IFLA_VF_VLAN]) { | |
1779 | struct ifla_vf_vlan *ivv = nla_data(tb[IFLA_VF_VLAN]); | |
1780 | ||
1781 | err = -EOPNOTSUPP; | |
1782 | if (ops->ndo_set_vf_vlan) | |
1783 | err = ops->ndo_set_vf_vlan(dev, ivv->vf, ivv->vlan, | |
79aab093 MS |
1784 | ivv->qos, |
1785 | htons(ETH_P_8021Q)); | |
1786 | if (err < 0) | |
1787 | return err; | |
1788 | } | |
1789 | ||
1790 | if (tb[IFLA_VF_VLAN_LIST]) { | |
1791 | struct ifla_vf_vlan_info *ivvl[MAX_VLAN_LIST_LEN]; | |
1792 | struct nlattr *attr; | |
1793 | int rem, len = 0; | |
1794 | ||
1795 | err = -EOPNOTSUPP; | |
1796 | if (!ops->ndo_set_vf_vlan) | |
1797 | return err; | |
1798 | ||
1799 | nla_for_each_nested(attr, tb[IFLA_VF_VLAN_LIST], rem) { | |
1800 | if (nla_type(attr) != IFLA_VF_VLAN_INFO || | |
1801 | nla_len(attr) < NLA_HDRLEN) { | |
1802 | return -EINVAL; | |
1803 | } | |
1804 | if (len >= MAX_VLAN_LIST_LEN) | |
1805 | return -EOPNOTSUPP; | |
1806 | ivvl[len] = nla_data(attr); | |
1807 | ||
1808 | len++; | |
1809 | } | |
fa34cd94 AB |
1810 | if (len == 0) |
1811 | return -EINVAL; | |
1812 | ||
79aab093 MS |
1813 | err = ops->ndo_set_vf_vlan(dev, ivvl[0]->vf, ivvl[0]->vlan, |
1814 | ivvl[0]->qos, ivvl[0]->vlan_proto); | |
4f7d2cdf DB |
1815 | if (err < 0) |
1816 | return err; | |
c02db8c6 | 1817 | } |
4f7d2cdf DB |
1818 | |
1819 | if (tb[IFLA_VF_TX_RATE]) { | |
1820 | struct ifla_vf_tx_rate *ivt = nla_data(tb[IFLA_VF_TX_RATE]); | |
1821 | struct ifla_vf_info ivf; | |
1822 | ||
1823 | err = -EOPNOTSUPP; | |
1824 | if (ops->ndo_get_vf_config) | |
1825 | err = ops->ndo_get_vf_config(dev, ivt->vf, &ivf); | |
1826 | if (err < 0) | |
1827 | return err; | |
1828 | ||
1829 | err = -EOPNOTSUPP; | |
1830 | if (ops->ndo_set_vf_rate) | |
1831 | err = ops->ndo_set_vf_rate(dev, ivt->vf, | |
1832 | ivf.min_tx_rate, | |
1833 | ivt->rate); | |
1834 | if (err < 0) | |
1835 | return err; | |
1836 | } | |
1837 | ||
1838 | if (tb[IFLA_VF_RATE]) { | |
1839 | struct ifla_vf_rate *ivt = nla_data(tb[IFLA_VF_RATE]); | |
1840 | ||
1841 | err = -EOPNOTSUPP; | |
1842 | if (ops->ndo_set_vf_rate) | |
1843 | err = ops->ndo_set_vf_rate(dev, ivt->vf, | |
1844 | ivt->min_tx_rate, | |
1845 | ivt->max_tx_rate); | |
1846 | if (err < 0) | |
1847 | return err; | |
1848 | } | |
1849 | ||
1850 | if (tb[IFLA_VF_SPOOFCHK]) { | |
1851 | struct ifla_vf_spoofchk *ivs = nla_data(tb[IFLA_VF_SPOOFCHK]); | |
1852 | ||
1853 | err = -EOPNOTSUPP; | |
1854 | if (ops->ndo_set_vf_spoofchk) | |
1855 | err = ops->ndo_set_vf_spoofchk(dev, ivs->vf, | |
1856 | ivs->setting); | |
1857 | if (err < 0) | |
1858 | return err; | |
1859 | } | |
1860 | ||
1861 | if (tb[IFLA_VF_LINK_STATE]) { | |
1862 | struct ifla_vf_link_state *ivl = nla_data(tb[IFLA_VF_LINK_STATE]); | |
1863 | ||
1864 | err = -EOPNOTSUPP; | |
1865 | if (ops->ndo_set_vf_link_state) | |
1866 | err = ops->ndo_set_vf_link_state(dev, ivl->vf, | |
1867 | ivl->link_state); | |
1868 | if (err < 0) | |
1869 | return err; | |
1870 | } | |
1871 | ||
1872 | if (tb[IFLA_VF_RSS_QUERY_EN]) { | |
1873 | struct ifla_vf_rss_query_en *ivrssq_en; | |
1874 | ||
1875 | err = -EOPNOTSUPP; | |
1876 | ivrssq_en = nla_data(tb[IFLA_VF_RSS_QUERY_EN]); | |
1877 | if (ops->ndo_set_vf_rss_query_en) | |
1878 | err = ops->ndo_set_vf_rss_query_en(dev, ivrssq_en->vf, | |
1879 | ivrssq_en->setting); | |
1880 | if (err < 0) | |
1881 | return err; | |
1882 | } | |
1883 | ||
dd461d6a HS |
1884 | if (tb[IFLA_VF_TRUST]) { |
1885 | struct ifla_vf_trust *ivt = nla_data(tb[IFLA_VF_TRUST]); | |
1886 | ||
1887 | err = -EOPNOTSUPP; | |
1888 | if (ops->ndo_set_vf_trust) | |
1889 | err = ops->ndo_set_vf_trust(dev, ivt->vf, ivt->setting); | |
1890 | if (err < 0) | |
1891 | return err; | |
1892 | } | |
1893 | ||
cc8e27cc EC |
1894 | if (tb[IFLA_VF_IB_NODE_GUID]) { |
1895 | struct ifla_vf_guid *ivt = nla_data(tb[IFLA_VF_IB_NODE_GUID]); | |
1896 | ||
1897 | if (!ops->ndo_set_vf_guid) | |
1898 | return -EOPNOTSUPP; | |
1899 | ||
1900 | return handle_vf_guid(dev, ivt, IFLA_VF_IB_NODE_GUID); | |
1901 | } | |
1902 | ||
1903 | if (tb[IFLA_VF_IB_PORT_GUID]) { | |
1904 | struct ifla_vf_guid *ivt = nla_data(tb[IFLA_VF_IB_PORT_GUID]); | |
1905 | ||
1906 | if (!ops->ndo_set_vf_guid) | |
1907 | return -EOPNOTSUPP; | |
1908 | ||
1909 | return handle_vf_guid(dev, ivt, IFLA_VF_IB_PORT_GUID); | |
1910 | } | |
1911 | ||
c02db8c6 CW |
1912 | return err; |
1913 | } | |
1914 | ||
fbaec0ea JP |
1915 | static int do_set_master(struct net_device *dev, int ifindex) |
1916 | { | |
898e5061 | 1917 | struct net_device *upper_dev = netdev_master_upper_dev_get(dev); |
fbaec0ea JP |
1918 | const struct net_device_ops *ops; |
1919 | int err; | |
1920 | ||
898e5061 JP |
1921 | if (upper_dev) { |
1922 | if (upper_dev->ifindex == ifindex) | |
fbaec0ea | 1923 | return 0; |
898e5061 | 1924 | ops = upper_dev->netdev_ops; |
fbaec0ea | 1925 | if (ops->ndo_del_slave) { |
898e5061 | 1926 | err = ops->ndo_del_slave(upper_dev, dev); |
fbaec0ea JP |
1927 | if (err) |
1928 | return err; | |
1929 | } else { | |
1930 | return -EOPNOTSUPP; | |
1931 | } | |
1932 | } | |
1933 | ||
1934 | if (ifindex) { | |
898e5061 JP |
1935 | upper_dev = __dev_get_by_index(dev_net(dev), ifindex); |
1936 | if (!upper_dev) | |
fbaec0ea | 1937 | return -EINVAL; |
898e5061 | 1938 | ops = upper_dev->netdev_ops; |
fbaec0ea | 1939 | if (ops->ndo_add_slave) { |
898e5061 | 1940 | err = ops->ndo_add_slave(upper_dev, dev); |
fbaec0ea JP |
1941 | if (err) |
1942 | return err; | |
1943 | } else { | |
1944 | return -EOPNOTSUPP; | |
1945 | } | |
1946 | } | |
1947 | return 0; | |
1948 | } | |
1949 | ||
90c325e3 | 1950 | #define DO_SETLINK_MODIFIED 0x01 |
ba998906 ND |
1951 | /* notify flag means notify + modified. */ |
1952 | #define DO_SETLINK_NOTIFY 0x03 | |
90f62cf3 EB |
1953 | static int do_setlink(const struct sk_buff *skb, |
1954 | struct net_device *dev, struct ifinfomsg *ifm, | |
ddf9f970 | 1955 | struct netlink_ext_ack *extack, |
90c325e3 | 1956 | struct nlattr **tb, char *ifname, int status) |
1da177e4 | 1957 | { |
d314774c | 1958 | const struct net_device_ops *ops = dev->netdev_ops; |
0157f60c | 1959 | int err; |
1da177e4 | 1960 | |
c931c9ae ED |
1961 | err = validate_linkmsg(dev, tb); |
1962 | if (err < 0) | |
1963 | return err; | |
1964 | ||
f0630529 | 1965 | if (tb[IFLA_NET_NS_PID] || tb[IFLA_NET_NS_FD]) { |
81adee47 | 1966 | struct net *net = rtnl_link_get_net(dev_net(dev), tb); |
d8a5ec67 EB |
1967 | if (IS_ERR(net)) { |
1968 | err = PTR_ERR(net); | |
1969 | goto errout; | |
1970 | } | |
90f62cf3 | 1971 | if (!netlink_ns_capable(skb, net->user_ns, CAP_NET_ADMIN)) { |
e0ebde0e | 1972 | put_net(net); |
b51642f6 EB |
1973 | err = -EPERM; |
1974 | goto errout; | |
1975 | } | |
d8a5ec67 EB |
1976 | err = dev_change_net_namespace(dev, net, ifname); |
1977 | put_net(net); | |
1978 | if (err) | |
1979 | goto errout; | |
90c325e3 | 1980 | status |= DO_SETLINK_MODIFIED; |
d8a5ec67 EB |
1981 | } |
1982 | ||
da5e0494 | 1983 | if (tb[IFLA_MAP]) { |
1da177e4 LT |
1984 | struct rtnl_link_ifmap *u_map; |
1985 | struct ifmap k_map; | |
1986 | ||
d314774c | 1987 | if (!ops->ndo_set_config) { |
1da177e4 | 1988 | err = -EOPNOTSUPP; |
0157f60c | 1989 | goto errout; |
1da177e4 LT |
1990 | } |
1991 | ||
1992 | if (!netif_device_present(dev)) { | |
1993 | err = -ENODEV; | |
0157f60c | 1994 | goto errout; |
1da177e4 | 1995 | } |
1da177e4 | 1996 | |
da5e0494 | 1997 | u_map = nla_data(tb[IFLA_MAP]); |
1da177e4 LT |
1998 | k_map.mem_start = (unsigned long) u_map->mem_start; |
1999 | k_map.mem_end = (unsigned long) u_map->mem_end; | |
2000 | k_map.base_addr = (unsigned short) u_map->base_addr; | |
2001 | k_map.irq = (unsigned char) u_map->irq; | |
2002 | k_map.dma = (unsigned char) u_map->dma; | |
2003 | k_map.port = (unsigned char) u_map->port; | |
2004 | ||
d314774c | 2005 | err = ops->ndo_set_config(dev, &k_map); |
da5e0494 | 2006 | if (err < 0) |
0157f60c | 2007 | goto errout; |
1da177e4 | 2008 | |
ba998906 | 2009 | status |= DO_SETLINK_NOTIFY; |
1da177e4 LT |
2010 | } |
2011 | ||
da5e0494 | 2012 | if (tb[IFLA_ADDRESS]) { |
70f8e78e DM |
2013 | struct sockaddr *sa; |
2014 | int len; | |
2015 | ||
153711f9 WC |
2016 | len = sizeof(sa_family_t) + max_t(size_t, dev->addr_len, |
2017 | sizeof(*sa)); | |
70f8e78e DM |
2018 | sa = kmalloc(len, GFP_KERNEL); |
2019 | if (!sa) { | |
2020 | err = -ENOMEM; | |
0157f60c | 2021 | goto errout; |
70f8e78e DM |
2022 | } |
2023 | sa->sa_family = dev->type; | |
da5e0494 | 2024 | memcpy(sa->sa_data, nla_data(tb[IFLA_ADDRESS]), |
70f8e78e | 2025 | dev->addr_len); |
e7c3273e | 2026 | err = dev_set_mac_address(dev, sa); |
70f8e78e | 2027 | kfree(sa); |
1da177e4 | 2028 | if (err) |
0157f60c | 2029 | goto errout; |
90c325e3 | 2030 | status |= DO_SETLINK_MODIFIED; |
1da177e4 LT |
2031 | } |
2032 | ||
da5e0494 TG |
2033 | if (tb[IFLA_MTU]) { |
2034 | err = dev_set_mtu(dev, nla_get_u32(tb[IFLA_MTU])); | |
2035 | if (err < 0) | |
0157f60c | 2036 | goto errout; |
90c325e3 | 2037 | status |= DO_SETLINK_MODIFIED; |
1da177e4 LT |
2038 | } |
2039 | ||
cbda10fa VD |
2040 | if (tb[IFLA_GROUP]) { |
2041 | dev_set_group(dev, nla_get_u32(tb[IFLA_GROUP])); | |
ba998906 | 2042 | status |= DO_SETLINK_NOTIFY; |
cbda10fa VD |
2043 | } |
2044 | ||
da5e0494 TG |
2045 | /* |
2046 | * Interface selected by interface index but interface | |
2047 | * name provided implies that a name change has been | |
2048 | * requested. | |
2049 | */ | |
51055be8 | 2050 | if (ifm->ifi_index > 0 && ifname[0]) { |
da5e0494 TG |
2051 | err = dev_change_name(dev, ifname); |
2052 | if (err < 0) | |
0157f60c | 2053 | goto errout; |
90c325e3 | 2054 | status |= DO_SETLINK_MODIFIED; |
1da177e4 LT |
2055 | } |
2056 | ||
0b815a1a SH |
2057 | if (tb[IFLA_IFALIAS]) { |
2058 | err = dev_set_alias(dev, nla_data(tb[IFLA_IFALIAS]), | |
2059 | nla_len(tb[IFLA_IFALIAS])); | |
2060 | if (err < 0) | |
2061 | goto errout; | |
ba998906 | 2062 | status |= DO_SETLINK_NOTIFY; |
0b815a1a SH |
2063 | } |
2064 | ||
da5e0494 TG |
2065 | if (tb[IFLA_BROADCAST]) { |
2066 | nla_memcpy(dev->broadcast, tb[IFLA_BROADCAST], dev->addr_len); | |
e7c3273e | 2067 | call_netdevice_notifiers(NETDEV_CHANGEADDR, dev); |
1da177e4 LT |
2068 | } |
2069 | ||
83b496e9 | 2070 | if (ifm->ifi_flags || ifm->ifi_change) { |
3729d502 | 2071 | err = dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm)); |
5f9021cf JB |
2072 | if (err < 0) |
2073 | goto errout; | |
83b496e9 | 2074 | } |
1da177e4 | 2075 | |
fbaec0ea JP |
2076 | if (tb[IFLA_MASTER]) { |
2077 | err = do_set_master(dev, nla_get_u32(tb[IFLA_MASTER])); | |
2078 | if (err) | |
2079 | goto errout; | |
90c325e3 | 2080 | status |= DO_SETLINK_MODIFIED; |
fbaec0ea JP |
2081 | } |
2082 | ||
9a57247f JP |
2083 | if (tb[IFLA_CARRIER]) { |
2084 | err = dev_change_carrier(dev, nla_get_u8(tb[IFLA_CARRIER])); | |
2085 | if (err) | |
2086 | goto errout; | |
90c325e3 | 2087 | status |= DO_SETLINK_MODIFIED; |
9a57247f JP |
2088 | } |
2089 | ||
5d1180fc | 2090 | if (tb[IFLA_TXQLEN]) { |
0cd29503 AD |
2091 | unsigned int value = nla_get_u32(tb[IFLA_TXQLEN]); |
2092 | unsigned int orig_len = dev->tx_queue_len; | |
08294a26 JW |
2093 | |
2094 | if (dev->tx_queue_len ^ value) { | |
2095 | dev->tx_queue_len = value; | |
2096 | err = call_netdevice_notifiers( | |
2097 | NETDEV_CHANGE_TX_QUEUE_LEN, dev); | |
2098 | err = notifier_to_errno(err); | |
2099 | if (err) { | |
2100 | dev->tx_queue_len = orig_len; | |
2101 | goto errout; | |
2102 | } | |
2d7f669b | 2103 | status |= DO_SETLINK_MODIFIED; |
08294a26 | 2104 | } |
5d1180fc | 2105 | } |
b00055aa | 2106 | |
da5e0494 | 2107 | if (tb[IFLA_OPERSTATE]) |
93b2d4a2 | 2108 | set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE])); |
b00055aa | 2109 | |
da5e0494 | 2110 | if (tb[IFLA_LINKMODE]) { |
1889b0e7 ND |
2111 | unsigned char value = nla_get_u8(tb[IFLA_LINKMODE]); |
2112 | ||
93b2d4a2 | 2113 | write_lock_bh(&dev_base_lock); |
1889b0e7 | 2114 | if (dev->link_mode ^ value) |
ba998906 | 2115 | status |= DO_SETLINK_NOTIFY; |
1889b0e7 | 2116 | dev->link_mode = value; |
93b2d4a2 | 2117 | write_unlock_bh(&dev_base_lock); |
b00055aa SR |
2118 | } |
2119 | ||
c02db8c6 | 2120 | if (tb[IFLA_VFINFO_LIST]) { |
4f7d2cdf | 2121 | struct nlattr *vfinfo[IFLA_VF_MAX + 1]; |
c02db8c6 CW |
2122 | struct nlattr *attr; |
2123 | int rem; | |
4f7d2cdf | 2124 | |
c02db8c6 | 2125 | nla_for_each_nested(attr, tb[IFLA_VFINFO_LIST], rem) { |
4f7d2cdf DB |
2126 | if (nla_type(attr) != IFLA_VF_INFO || |
2127 | nla_len(attr) < NLA_HDRLEN) { | |
253683bb | 2128 | err = -EINVAL; |
c02db8c6 | 2129 | goto errout; |
253683bb | 2130 | } |
4f7d2cdf | 2131 | err = nla_parse_nested(vfinfo, IFLA_VF_MAX, attr, |
fceb6435 | 2132 | ifla_vf_policy, NULL); |
4f7d2cdf DB |
2133 | if (err < 0) |
2134 | goto errout; | |
2135 | err = do_setvfinfo(dev, vfinfo); | |
c02db8c6 CW |
2136 | if (err < 0) |
2137 | goto errout; | |
ba998906 | 2138 | status |= DO_SETLINK_NOTIFY; |
c02db8c6 | 2139 | } |
ebc08a6f | 2140 | } |
1da177e4 LT |
2141 | err = 0; |
2142 | ||
57b61080 SF |
2143 | if (tb[IFLA_VF_PORTS]) { |
2144 | struct nlattr *port[IFLA_PORT_MAX+1]; | |
2145 | struct nlattr *attr; | |
2146 | int vf; | |
2147 | int rem; | |
2148 | ||
2149 | err = -EOPNOTSUPP; | |
2150 | if (!ops->ndo_set_vf_port) | |
2151 | goto errout; | |
2152 | ||
2153 | nla_for_each_nested(attr, tb[IFLA_VF_PORTS], rem) { | |
035d210f DB |
2154 | if (nla_type(attr) != IFLA_VF_PORT || |
2155 | nla_len(attr) < NLA_HDRLEN) { | |
2156 | err = -EINVAL; | |
2157 | goto errout; | |
2158 | } | |
2159 | err = nla_parse_nested(port, IFLA_PORT_MAX, attr, | |
fceb6435 | 2160 | ifla_port_policy, NULL); |
57b61080 SF |
2161 | if (err < 0) |
2162 | goto errout; | |
2163 | if (!port[IFLA_PORT_VF]) { | |
2164 | err = -EOPNOTSUPP; | |
2165 | goto errout; | |
2166 | } | |
2167 | vf = nla_get_u32(port[IFLA_PORT_VF]); | |
2168 | err = ops->ndo_set_vf_port(dev, vf, port); | |
2169 | if (err < 0) | |
2170 | goto errout; | |
ba998906 | 2171 | status |= DO_SETLINK_NOTIFY; |
57b61080 SF |
2172 | } |
2173 | } | |
2174 | err = 0; | |
2175 | ||
2176 | if (tb[IFLA_PORT_SELF]) { | |
2177 | struct nlattr *port[IFLA_PORT_MAX+1]; | |
2178 | ||
2179 | err = nla_parse_nested(port, IFLA_PORT_MAX, | |
fceb6435 JB |
2180 | tb[IFLA_PORT_SELF], ifla_port_policy, |
2181 | NULL); | |
57b61080 SF |
2182 | if (err < 0) |
2183 | goto errout; | |
2184 | ||
2185 | err = -EOPNOTSUPP; | |
2186 | if (ops->ndo_set_vf_port) | |
2187 | err = ops->ndo_set_vf_port(dev, PORT_SELF_VF, port); | |
2188 | if (err < 0) | |
2189 | goto errout; | |
ba998906 | 2190 | status |= DO_SETLINK_NOTIFY; |
57b61080 | 2191 | } |
f8ff182c TG |
2192 | |
2193 | if (tb[IFLA_AF_SPEC]) { | |
2194 | struct nlattr *af; | |
2195 | int rem; | |
2196 | ||
2197 | nla_for_each_nested(af, tb[IFLA_AF_SPEC], rem) { | |
2198 | const struct rtnl_af_ops *af_ops; | |
2199 | ||
2200 | if (!(af_ops = rtnl_af_lookup(nla_type(af)))) | |
cf7afbfe | 2201 | BUG(); |
f8ff182c | 2202 | |
cf7afbfe | 2203 | err = af_ops->set_link_af(dev, af); |
f8ff182c TG |
2204 | if (err < 0) |
2205 | goto errout; | |
2206 | ||
ba998906 | 2207 | status |= DO_SETLINK_NOTIFY; |
f8ff182c TG |
2208 | } |
2209 | } | |
57b61080 SF |
2210 | err = 0; |
2211 | ||
88d6378b AK |
2212 | if (tb[IFLA_PROTO_DOWN]) { |
2213 | err = dev_change_proto_down(dev, | |
2214 | nla_get_u8(tb[IFLA_PROTO_DOWN])); | |
2215 | if (err) | |
2216 | goto errout; | |
2217 | status |= DO_SETLINK_NOTIFY; | |
2218 | } | |
2219 | ||
d1fdd913 BB |
2220 | if (tb[IFLA_XDP]) { |
2221 | struct nlattr *xdp[IFLA_XDP_MAX + 1]; | |
85de8576 | 2222 | u32 xdp_flags = 0; |
d1fdd913 BB |
2223 | |
2224 | err = nla_parse_nested(xdp, IFLA_XDP_MAX, tb[IFLA_XDP], | |
fceb6435 | 2225 | ifla_xdp_policy, NULL); |
d1fdd913 BB |
2226 | if (err < 0) |
2227 | goto errout; | |
2228 | ||
58038695 | 2229 | if (xdp[IFLA_XDP_ATTACHED] || xdp[IFLA_XDP_PROG_ID]) { |
262d8625 BB |
2230 | err = -EINVAL; |
2231 | goto errout; | |
2232 | } | |
85de8576 DB |
2233 | |
2234 | if (xdp[IFLA_XDP_FLAGS]) { | |
2235 | xdp_flags = nla_get_u32(xdp[IFLA_XDP_FLAGS]); | |
2236 | if (xdp_flags & ~XDP_FLAGS_MASK) { | |
2237 | err = -EINVAL; | |
2238 | goto errout; | |
2239 | } | |
ee5d032f | 2240 | if (hweight32(xdp_flags & XDP_FLAGS_MODES) > 1) { |
0489df9a DB |
2241 | err = -EINVAL; |
2242 | goto errout; | |
2243 | } | |
85de8576 DB |
2244 | } |
2245 | ||
d1fdd913 | 2246 | if (xdp[IFLA_XDP_FD]) { |
ddf9f970 | 2247 | err = dev_change_xdp_fd(dev, extack, |
85de8576 DB |
2248 | nla_get_s32(xdp[IFLA_XDP_FD]), |
2249 | xdp_flags); | |
d1fdd913 BB |
2250 | if (err) |
2251 | goto errout; | |
2252 | status |= DO_SETLINK_NOTIFY; | |
2253 | } | |
2254 | } | |
2255 | ||
0157f60c | 2256 | errout: |
ba998906 | 2257 | if (status & DO_SETLINK_MODIFIED) { |
64ff90cc | 2258 | if ((status & DO_SETLINK_NOTIFY) == DO_SETLINK_NOTIFY) |
ba998906 ND |
2259 | netdev_state_change(dev); |
2260 | ||
2261 | if (err < 0) | |
2262 | 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", | |
2263 | dev->name); | |
2264 | } | |
da5e0494 | 2265 | |
0157f60c PM |
2266 | return err; |
2267 | } | |
1da177e4 | 2268 | |
c21ef3e3 DA |
2269 | static int rtnl_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, |
2270 | struct netlink_ext_ack *extack) | |
0157f60c | 2271 | { |
3b1e0a65 | 2272 | struct net *net = sock_net(skb->sk); |
0157f60c PM |
2273 | struct ifinfomsg *ifm; |
2274 | struct net_device *dev; | |
2275 | int err; | |
2276 | struct nlattr *tb[IFLA_MAX+1]; | |
2277 | char ifname[IFNAMSIZ]; | |
2278 | ||
c21ef3e3 DA |
2279 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy, |
2280 | extack); | |
0157f60c PM |
2281 | if (err < 0) |
2282 | goto errout; | |
2283 | ||
2284 | if (tb[IFLA_IFNAME]) | |
2285 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
2286 | else | |
2287 | ifname[0] = '\0'; | |
2288 | ||
2289 | err = -EINVAL; | |
2290 | ifm = nlmsg_data(nlh); | |
2291 | if (ifm->ifi_index > 0) | |
a3d12891 | 2292 | dev = __dev_get_by_index(net, ifm->ifi_index); |
0157f60c | 2293 | else if (tb[IFLA_IFNAME]) |
a3d12891 | 2294 | dev = __dev_get_by_name(net, ifname); |
0157f60c PM |
2295 | else |
2296 | goto errout; | |
2297 | ||
2298 | if (dev == NULL) { | |
2299 | err = -ENODEV; | |
2300 | goto errout; | |
2301 | } | |
2302 | ||
ddf9f970 | 2303 | err = do_setlink(skb, dev, ifm, extack, tb, ifname, 0); |
da5e0494 | 2304 | errout: |
1da177e4 LT |
2305 | return err; |
2306 | } | |
2307 | ||
66400d54 WC |
2308 | static int rtnl_group_dellink(const struct net *net, int group) |
2309 | { | |
2310 | struct net_device *dev, *aux; | |
2311 | LIST_HEAD(list_kill); | |
2312 | bool found = false; | |
2313 | ||
2314 | if (!group) | |
2315 | return -EPERM; | |
2316 | ||
2317 | for_each_netdev(net, dev) { | |
2318 | if (dev->group == group) { | |
2319 | const struct rtnl_link_ops *ops; | |
2320 | ||
2321 | found = true; | |
2322 | ops = dev->rtnl_link_ops; | |
2323 | if (!ops || !ops->dellink) | |
2324 | return -EOPNOTSUPP; | |
2325 | } | |
2326 | } | |
2327 | ||
2328 | if (!found) | |
2329 | return -ENODEV; | |
2330 | ||
2331 | for_each_netdev_safe(net, dev, aux) { | |
2332 | if (dev->group == group) { | |
2333 | const struct rtnl_link_ops *ops; | |
2334 | ||
2335 | ops = dev->rtnl_link_ops; | |
2336 | ops->dellink(dev, &list_kill); | |
2337 | } | |
2338 | } | |
2339 | unregister_netdevice_many(&list_kill); | |
2340 | ||
2341 | return 0; | |
2342 | } | |
2343 | ||
614732ea TG |
2344 | int rtnl_delete_link(struct net_device *dev) |
2345 | { | |
2346 | const struct rtnl_link_ops *ops; | |
2347 | LIST_HEAD(list_kill); | |
2348 | ||
2349 | ops = dev->rtnl_link_ops; | |
2350 | if (!ops || !ops->dellink) | |
2351 | return -EOPNOTSUPP; | |
2352 | ||
2353 | ops->dellink(dev, &list_kill); | |
2354 | unregister_netdevice_many(&list_kill); | |
2355 | ||
2356 | return 0; | |
2357 | } | |
2358 | EXPORT_SYMBOL_GPL(rtnl_delete_link); | |
2359 | ||
c21ef3e3 DA |
2360 | static int rtnl_dellink(struct sk_buff *skb, struct nlmsghdr *nlh, |
2361 | struct netlink_ext_ack *extack) | |
38f7b870 | 2362 | { |
3b1e0a65 | 2363 | struct net *net = sock_net(skb->sk); |
38f7b870 PM |
2364 | struct net_device *dev; |
2365 | struct ifinfomsg *ifm; | |
2366 | char ifname[IFNAMSIZ]; | |
2367 | struct nlattr *tb[IFLA_MAX+1]; | |
2368 | int err; | |
2369 | ||
c21ef3e3 | 2370 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy, extack); |
38f7b870 PM |
2371 | if (err < 0) |
2372 | return err; | |
2373 | ||
2374 | if (tb[IFLA_IFNAME]) | |
2375 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
2376 | ||
2377 | ifm = nlmsg_data(nlh); | |
2378 | if (ifm->ifi_index > 0) | |
881d966b | 2379 | dev = __dev_get_by_index(net, ifm->ifi_index); |
38f7b870 | 2380 | else if (tb[IFLA_IFNAME]) |
881d966b | 2381 | dev = __dev_get_by_name(net, ifname); |
66400d54 WC |
2382 | else if (tb[IFLA_GROUP]) |
2383 | return rtnl_group_dellink(net, nla_get_u32(tb[IFLA_GROUP])); | |
38f7b870 PM |
2384 | else |
2385 | return -EINVAL; | |
2386 | ||
2387 | if (!dev) | |
2388 | return -ENODEV; | |
2389 | ||
614732ea | 2390 | return rtnl_delete_link(dev); |
38f7b870 PM |
2391 | } |
2392 | ||
3729d502 PM |
2393 | int rtnl_configure_link(struct net_device *dev, const struct ifinfomsg *ifm) |
2394 | { | |
2395 | unsigned int old_flags; | |
2396 | int err; | |
2397 | ||
2398 | old_flags = dev->flags; | |
2399 | if (ifm && (ifm->ifi_flags || ifm->ifi_change)) { | |
2400 | err = __dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm)); | |
2401 | if (err < 0) | |
2402 | return err; | |
2403 | } | |
2404 | ||
23557c5d RP |
2405 | if (dev->rtnl_link_state == RTNL_LINK_INITIALIZED) { |
2406 | __dev_notify_flags(dev, old_flags, 0U); | |
2407 | } else { | |
2408 | dev->rtnl_link_state = RTNL_LINK_INITIALIZED; | |
2409 | __dev_notify_flags(dev, old_flags, ~0U); | |
2410 | } | |
3729d502 PM |
2411 | return 0; |
2412 | } | |
2413 | EXPORT_SYMBOL(rtnl_configure_link); | |
2414 | ||
c0713563 | 2415 | struct net_device *rtnl_create_link(struct net *net, |
78ebb0d0 | 2416 | const char *ifname, unsigned char name_assign_type, |
5517750f | 2417 | const struct rtnl_link_ops *ops, struct nlattr *tb[]) |
e7199288 | 2418 | { |
e7199288 | 2419 | struct net_device *dev; |
d40156aa JP |
2420 | unsigned int num_tx_queues = 1; |
2421 | unsigned int num_rx_queues = 1; | |
e7199288 | 2422 | |
76ff5cc9 JP |
2423 | if (tb[IFLA_NUM_TX_QUEUES]) |
2424 | num_tx_queues = nla_get_u32(tb[IFLA_NUM_TX_QUEUES]); | |
2425 | else if (ops->get_num_tx_queues) | |
d40156aa | 2426 | num_tx_queues = ops->get_num_tx_queues(); |
76ff5cc9 JP |
2427 | |
2428 | if (tb[IFLA_NUM_RX_QUEUES]) | |
2429 | num_rx_queues = nla_get_u32(tb[IFLA_NUM_RX_QUEUES]); | |
2430 | else if (ops->get_num_rx_queues) | |
d40156aa | 2431 | num_rx_queues = ops->get_num_rx_queues(); |
efacb309 | 2432 | |
a8b0f004 ED |
2433 | if (num_tx_queues < 1 || num_tx_queues > 4096) |
2434 | return ERR_PTR(-EINVAL); | |
2435 | ||
2436 | if (num_rx_queues < 1 || num_rx_queues > 4096) | |
2437 | return ERR_PTR(-EINVAL); | |
2438 | ||
5517750f | 2439 | dev = alloc_netdev_mqs(ops->priv_size, ifname, name_assign_type, |
c835a677 | 2440 | ops->setup, num_tx_queues, num_rx_queues); |
e7199288 | 2441 | if (!dev) |
d1892e4e | 2442 | return ERR_PTR(-ENOMEM); |
e7199288 | 2443 | |
81adee47 EB |
2444 | dev_net_set(dev, net); |
2445 | dev->rtnl_link_ops = ops; | |
3729d502 | 2446 | dev->rtnl_link_state = RTNL_LINK_INITIALIZING; |
81adee47 | 2447 | |
e7199288 PE |
2448 | if (tb[IFLA_MTU]) |
2449 | dev->mtu = nla_get_u32(tb[IFLA_MTU]); | |
2afb9b53 | 2450 | if (tb[IFLA_ADDRESS]) { |
e7199288 PE |
2451 | memcpy(dev->dev_addr, nla_data(tb[IFLA_ADDRESS]), |
2452 | nla_len(tb[IFLA_ADDRESS])); | |
2afb9b53 JP |
2453 | dev->addr_assign_type = NET_ADDR_SET; |
2454 | } | |
e7199288 PE |
2455 | if (tb[IFLA_BROADCAST]) |
2456 | memcpy(dev->broadcast, nla_data(tb[IFLA_BROADCAST]), | |
2457 | nla_len(tb[IFLA_BROADCAST])); | |
2458 | if (tb[IFLA_TXQLEN]) | |
2459 | dev->tx_queue_len = nla_get_u32(tb[IFLA_TXQLEN]); | |
2460 | if (tb[IFLA_OPERSTATE]) | |
93b2d4a2 | 2461 | set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE])); |
e7199288 PE |
2462 | if (tb[IFLA_LINKMODE]) |
2463 | dev->link_mode = nla_get_u8(tb[IFLA_LINKMODE]); | |
ffa934f1 PM |
2464 | if (tb[IFLA_GROUP]) |
2465 | dev_set_group(dev, nla_get_u32(tb[IFLA_GROUP])); | |
e7199288 PE |
2466 | |
2467 | return dev; | |
e7199288 | 2468 | } |
e0d087af | 2469 | EXPORT_SYMBOL(rtnl_create_link); |
e7199288 | 2470 | |
90f62cf3 EB |
2471 | static int rtnl_group_changelink(const struct sk_buff *skb, |
2472 | struct net *net, int group, | |
e7ed828f | 2473 | struct ifinfomsg *ifm, |
ddf9f970 | 2474 | struct netlink_ext_ack *extack, |
e7ed828f VD |
2475 | struct nlattr **tb) |
2476 | { | |
d079535d | 2477 | struct net_device *dev, *aux; |
e7ed828f VD |
2478 | int err; |
2479 | ||
d079535d | 2480 | for_each_netdev_safe(net, dev, aux) { |
e7ed828f | 2481 | if (dev->group == group) { |
ddf9f970 | 2482 | err = do_setlink(skb, dev, ifm, extack, tb, NULL, 0); |
e7ed828f VD |
2483 | if (err < 0) |
2484 | return err; | |
2485 | } | |
2486 | } | |
2487 | ||
2488 | return 0; | |
2489 | } | |
2490 | ||
c21ef3e3 DA |
2491 | static int rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh, |
2492 | struct netlink_ext_ack *extack) | |
38f7b870 | 2493 | { |
3b1e0a65 | 2494 | struct net *net = sock_net(skb->sk); |
38f7b870 | 2495 | const struct rtnl_link_ops *ops; |
ba7d49b1 | 2496 | const struct rtnl_link_ops *m_ops = NULL; |
38f7b870 | 2497 | struct net_device *dev; |
ba7d49b1 | 2498 | struct net_device *master_dev = NULL; |
38f7b870 PM |
2499 | struct ifinfomsg *ifm; |
2500 | char kind[MODULE_NAME_LEN]; | |
2501 | char ifname[IFNAMSIZ]; | |
2502 | struct nlattr *tb[IFLA_MAX+1]; | |
2503 | struct nlattr *linkinfo[IFLA_INFO_MAX+1]; | |
5517750f | 2504 | unsigned char name_assign_type = NET_NAME_USER; |
38f7b870 PM |
2505 | int err; |
2506 | ||
95a5afca | 2507 | #ifdef CONFIG_MODULES |
38f7b870 | 2508 | replay: |
8072f085 | 2509 | #endif |
c21ef3e3 | 2510 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy, extack); |
38f7b870 PM |
2511 | if (err < 0) |
2512 | return err; | |
2513 | ||
2514 | if (tb[IFLA_IFNAME]) | |
2515 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
2516 | else | |
2517 | ifname[0] = '\0'; | |
2518 | ||
2519 | ifm = nlmsg_data(nlh); | |
2520 | if (ifm->ifi_index > 0) | |
881d966b | 2521 | dev = __dev_get_by_index(net, ifm->ifi_index); |
e7ed828f VD |
2522 | else { |
2523 | if (ifname[0]) | |
2524 | dev = __dev_get_by_name(net, ifname); | |
e7ed828f VD |
2525 | else |
2526 | dev = NULL; | |
2527 | } | |
38f7b870 | 2528 | |
ba7d49b1 JP |
2529 | if (dev) { |
2530 | master_dev = netdev_master_upper_dev_get(dev); | |
2531 | if (master_dev) | |
2532 | m_ops = master_dev->rtnl_link_ops; | |
2533 | } | |
2534 | ||
e0d087af ED |
2535 | err = validate_linkmsg(dev, tb); |
2536 | if (err < 0) | |
1840bb13 TG |
2537 | return err; |
2538 | ||
38f7b870 PM |
2539 | if (tb[IFLA_LINKINFO]) { |
2540 | err = nla_parse_nested(linkinfo, IFLA_INFO_MAX, | |
fceb6435 JB |
2541 | tb[IFLA_LINKINFO], ifla_info_policy, |
2542 | NULL); | |
38f7b870 PM |
2543 | if (err < 0) |
2544 | return err; | |
2545 | } else | |
2546 | memset(linkinfo, 0, sizeof(linkinfo)); | |
2547 | ||
2548 | if (linkinfo[IFLA_INFO_KIND]) { | |
2549 | nla_strlcpy(kind, linkinfo[IFLA_INFO_KIND], sizeof(kind)); | |
2550 | ops = rtnl_link_ops_get(kind); | |
2551 | } else { | |
2552 | kind[0] = '\0'; | |
2553 | ops = NULL; | |
2554 | } | |
2555 | ||
2556 | if (1) { | |
4e10fd5b SL |
2557 | struct nlattr *attr[ops ? ops->maxtype + 1 : 1]; |
2558 | struct nlattr *slave_attr[m_ops ? m_ops->slave_maxtype + 1 : 1]; | |
ba7d49b1 JP |
2559 | struct nlattr **data = NULL; |
2560 | struct nlattr **slave_data = NULL; | |
317f4810 | 2561 | struct net *dest_net, *link_net = NULL; |
38f7b870 PM |
2562 | |
2563 | if (ops) { | |
2564 | if (ops->maxtype && linkinfo[IFLA_INFO_DATA]) { | |
2565 | err = nla_parse_nested(attr, ops->maxtype, | |
2566 | linkinfo[IFLA_INFO_DATA], | |
fceb6435 | 2567 | ops->policy, NULL); |
38f7b870 PM |
2568 | if (err < 0) |
2569 | return err; | |
2570 | data = attr; | |
2571 | } | |
2572 | if (ops->validate) { | |
a8b8a889 | 2573 | err = ops->validate(tb, data, extack); |
38f7b870 PM |
2574 | if (err < 0) |
2575 | return err; | |
2576 | } | |
2577 | } | |
2578 | ||
ba7d49b1 JP |
2579 | if (m_ops) { |
2580 | if (m_ops->slave_maxtype && | |
2581 | linkinfo[IFLA_INFO_SLAVE_DATA]) { | |
2582 | err = nla_parse_nested(slave_attr, | |
2583 | m_ops->slave_maxtype, | |
2584 | linkinfo[IFLA_INFO_SLAVE_DATA], | |
fceb6435 JB |
2585 | m_ops->slave_policy, |
2586 | NULL); | |
ba7d49b1 JP |
2587 | if (err < 0) |
2588 | return err; | |
2589 | slave_data = slave_attr; | |
2590 | } | |
2591 | if (m_ops->slave_validate) { | |
d116ffc7 MS |
2592 | err = m_ops->slave_validate(tb, slave_data, |
2593 | extack); | |
ba7d49b1 JP |
2594 | if (err < 0) |
2595 | return err; | |
2596 | } | |
2597 | } | |
2598 | ||
38f7b870 | 2599 | if (dev) { |
90c325e3 | 2600 | int status = 0; |
38f7b870 PM |
2601 | |
2602 | if (nlh->nlmsg_flags & NLM_F_EXCL) | |
2603 | return -EEXIST; | |
2604 | if (nlh->nlmsg_flags & NLM_F_REPLACE) | |
2605 | return -EOPNOTSUPP; | |
2606 | ||
2607 | if (linkinfo[IFLA_INFO_DATA]) { | |
2608 | if (!ops || ops != dev->rtnl_link_ops || | |
2609 | !ops->changelink) | |
2610 | return -EOPNOTSUPP; | |
2611 | ||
ad744b22 | 2612 | err = ops->changelink(dev, tb, data, extack); |
38f7b870 PM |
2613 | if (err < 0) |
2614 | return err; | |
ba998906 | 2615 | status |= DO_SETLINK_NOTIFY; |
38f7b870 PM |
2616 | } |
2617 | ||
ba7d49b1 JP |
2618 | if (linkinfo[IFLA_INFO_SLAVE_DATA]) { |
2619 | if (!m_ops || !m_ops->slave_changelink) | |
2620 | return -EOPNOTSUPP; | |
2621 | ||
2622 | err = m_ops->slave_changelink(master_dev, dev, | |
17dd0ec4 MS |
2623 | tb, slave_data, |
2624 | extack); | |
ba7d49b1 JP |
2625 | if (err < 0) |
2626 | return err; | |
ba998906 | 2627 | status |= DO_SETLINK_NOTIFY; |
ba7d49b1 JP |
2628 | } |
2629 | ||
ddf9f970 JK |
2630 | return do_setlink(skb, dev, ifm, extack, tb, ifname, |
2631 | status); | |
38f7b870 PM |
2632 | } |
2633 | ||
ffa934f1 PM |
2634 | if (!(nlh->nlmsg_flags & NLM_F_CREATE)) { |
2635 | if (ifm->ifi_index == 0 && tb[IFLA_GROUP]) | |
90f62cf3 | 2636 | return rtnl_group_changelink(skb, net, |
ffa934f1 | 2637 | nla_get_u32(tb[IFLA_GROUP]), |
ddf9f970 | 2638 | ifm, extack, tb); |
38f7b870 | 2639 | return -ENODEV; |
ffa934f1 | 2640 | } |
38f7b870 | 2641 | |
160ca014 | 2642 | if (tb[IFLA_MAP] || tb[IFLA_PROTINFO]) |
38f7b870 PM |
2643 | return -EOPNOTSUPP; |
2644 | ||
2645 | if (!ops) { | |
95a5afca | 2646 | #ifdef CONFIG_MODULES |
38f7b870 PM |
2647 | if (kind[0]) { |
2648 | __rtnl_unlock(); | |
2649 | request_module("rtnl-link-%s", kind); | |
2650 | rtnl_lock(); | |
2651 | ops = rtnl_link_ops_get(kind); | |
2652 | if (ops) | |
2653 | goto replay; | |
2654 | } | |
2655 | #endif | |
2656 | return -EOPNOTSUPP; | |
2657 | } | |
2658 | ||
b0ab2fab JP |
2659 | if (!ops->setup) |
2660 | return -EOPNOTSUPP; | |
2661 | ||
5517750f | 2662 | if (!ifname[0]) { |
38f7b870 | 2663 | snprintf(ifname, IFNAMSIZ, "%s%%d", ops->kind); |
5517750f TG |
2664 | name_assign_type = NET_NAME_ENUM; |
2665 | } | |
e7199288 | 2666 | |
81adee47 | 2667 | dest_net = rtnl_link_get_net(net, tb); |
13ad1774 EB |
2668 | if (IS_ERR(dest_net)) |
2669 | return PTR_ERR(dest_net); | |
2670 | ||
505ce415 EB |
2671 | err = -EPERM; |
2672 | if (!netlink_ns_capable(skb, dest_net->user_ns, CAP_NET_ADMIN)) | |
2673 | goto out; | |
2674 | ||
317f4810 ND |
2675 | if (tb[IFLA_LINK_NETNSID]) { |
2676 | int id = nla_get_s32(tb[IFLA_LINK_NETNSID]); | |
2677 | ||
2678 | link_net = get_net_ns_by_id(dest_net, id); | |
2679 | if (!link_net) { | |
2680 | err = -EINVAL; | |
2681 | goto out; | |
2682 | } | |
06615bed EB |
2683 | err = -EPERM; |
2684 | if (!netlink_ns_capable(skb, link_net->user_ns, CAP_NET_ADMIN)) | |
2685 | goto out; | |
317f4810 ND |
2686 | } |
2687 | ||
2688 | dev = rtnl_create_link(link_net ? : dest_net, ifname, | |
2689 | name_assign_type, ops, tb); | |
9c7dafbf | 2690 | if (IS_ERR(dev)) { |
e7199288 | 2691 | err = PTR_ERR(dev); |
9c7dafbf PE |
2692 | goto out; |
2693 | } | |
2694 | ||
2695 | dev->ifindex = ifm->ifi_index; | |
2696 | ||
0e0eee24 | 2697 | if (ops->newlink) { |
7a3f4a18 MS |
2698 | err = ops->newlink(link_net ? : net, dev, tb, data, |
2699 | extack); | |
0e0eee24 | 2700 | /* Drivers should call free_netdev() in ->destructor |
e51fb152 CW |
2701 | * and unregister it on failure after registration |
2702 | * so that device could be finally freed in rtnl_unlock. | |
0e0eee24 | 2703 | */ |
e51fb152 CW |
2704 | if (err < 0) { |
2705 | /* If device is not registered at all, free it now */ | |
2706 | if (dev->reg_state == NETREG_UNINITIALIZED) | |
2707 | free_netdev(dev); | |
0e0eee24 | 2708 | goto out; |
e51fb152 | 2709 | } |
0e0eee24 | 2710 | } else { |
2d85cba2 | 2711 | err = register_netdevice(dev); |
0e0eee24 CW |
2712 | if (err < 0) { |
2713 | free_netdev(dev); | |
2714 | goto out; | |
2715 | } | |
fce9b9be | 2716 | } |
3729d502 | 2717 | err = rtnl_configure_link(dev, ifm); |
43638900 DM |
2718 | if (err < 0) |
2719 | goto out_unregister; | |
bdef279b | 2720 | if (link_net) { |
317f4810 | 2721 | err = dev_change_net_namespace(dev, dest_net, ifname); |
bdef279b | 2722 | if (err < 0) |
43638900 | 2723 | goto out_unregister; |
bdef279b | 2724 | } |
160ca014 TV |
2725 | if (tb[IFLA_MASTER]) { |
2726 | err = do_set_master(dev, nla_get_u32(tb[IFLA_MASTER])); | |
2727 | if (err) | |
2728 | goto out_unregister; | |
2729 | } | |
3729d502 | 2730 | out: |
317f4810 ND |
2731 | if (link_net) |
2732 | put_net(link_net); | |
81adee47 | 2733 | put_net(dest_net); |
38f7b870 | 2734 | return err; |
43638900 DM |
2735 | out_unregister: |
2736 | if (ops->newlink) { | |
2737 | LIST_HEAD(list_kill); | |
2738 | ||
2739 | ops->dellink(dev, &list_kill); | |
2740 | unregister_netdevice_many(&list_kill); | |
2741 | } else { | |
2742 | unregister_netdevice(dev); | |
2743 | } | |
2744 | goto out; | |
38f7b870 PM |
2745 | } |
2746 | } | |
2747 | ||
c21ef3e3 DA |
2748 | static int rtnl_getlink(struct sk_buff *skb, struct nlmsghdr *nlh, |
2749 | struct netlink_ext_ack *extack) | |
711e2c33 | 2750 | { |
3b1e0a65 | 2751 | struct net *net = sock_net(skb->sk); |
b60c5115 | 2752 | struct ifinfomsg *ifm; |
a3d12891 | 2753 | char ifname[IFNAMSIZ]; |
b60c5115 TG |
2754 | struct nlattr *tb[IFLA_MAX+1]; |
2755 | struct net_device *dev = NULL; | |
2756 | struct sk_buff *nskb; | |
339bf98f | 2757 | int err; |
115c9b81 | 2758 | u32 ext_filter_mask = 0; |
711e2c33 | 2759 | |
c21ef3e3 | 2760 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy, extack); |
b60c5115 | 2761 | if (err < 0) |
9918f230 | 2762 | return err; |
b60c5115 | 2763 | |
a3d12891 ED |
2764 | if (tb[IFLA_IFNAME]) |
2765 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
2766 | ||
115c9b81 GR |
2767 | if (tb[IFLA_EXT_MASK]) |
2768 | ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]); | |
2769 | ||
b60c5115 | 2770 | ifm = nlmsg_data(nlh); |
a3d12891 ED |
2771 | if (ifm->ifi_index > 0) |
2772 | dev = __dev_get_by_index(net, ifm->ifi_index); | |
2773 | else if (tb[IFLA_IFNAME]) | |
2774 | dev = __dev_get_by_name(net, ifname); | |
2775 | else | |
711e2c33 | 2776 | return -EINVAL; |
711e2c33 | 2777 | |
a3d12891 ED |
2778 | if (dev == NULL) |
2779 | return -ENODEV; | |
2780 | ||
115c9b81 | 2781 | nskb = nlmsg_new(if_nlmsg_size(dev, ext_filter_mask), GFP_KERNEL); |
a3d12891 ED |
2782 | if (nskb == NULL) |
2783 | return -ENOBUFS; | |
b60c5115 | 2784 | |
15e47304 | 2785 | err = rtnl_fill_ifinfo(nskb, dev, RTM_NEWLINK, NETLINK_CB(skb).portid, |
3d3ea5af | 2786 | nlh->nlmsg_seq, 0, 0, ext_filter_mask, 0); |
26932566 PM |
2787 | if (err < 0) { |
2788 | /* -EMSGSIZE implies BUG in if_nlmsg_size */ | |
2789 | WARN_ON(err == -EMSGSIZE); | |
2790 | kfree_skb(nskb); | |
a3d12891 | 2791 | } else |
15e47304 | 2792 | err = rtnl_unicast(nskb, net, NETLINK_CB(skb).portid); |
711e2c33 | 2793 | |
b60c5115 | 2794 | return err; |
711e2c33 | 2795 | } |
711e2c33 | 2796 | |
115c9b81 | 2797 | static u16 rtnl_calcit(struct sk_buff *skb, struct nlmsghdr *nlh) |
c7ac8679 | 2798 | { |
115c9b81 GR |
2799 | struct net *net = sock_net(skb->sk); |
2800 | struct net_device *dev; | |
2801 | struct nlattr *tb[IFLA_MAX+1]; | |
2802 | u32 ext_filter_mask = 0; | |
2803 | u16 min_ifinfo_dump_size = 0; | |
e5eca6d4 MS |
2804 | int hdrlen; |
2805 | ||
2806 | /* Same kernel<->userspace interface hack as in rtnl_dump_ifinfo. */ | |
2807 | hdrlen = nlmsg_len(nlh) < sizeof(struct ifinfomsg) ? | |
2808 | sizeof(struct rtgenmsg) : sizeof(struct ifinfomsg); | |
115c9b81 | 2809 | |
fceb6435 | 2810 | if (nlmsg_parse(nlh, hdrlen, tb, IFLA_MAX, ifla_policy, NULL) >= 0) { |
a4b64fbe ED |
2811 | if (tb[IFLA_EXT_MASK]) |
2812 | ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]); | |
2813 | } | |
115c9b81 GR |
2814 | |
2815 | if (!ext_filter_mask) | |
2816 | return NLMSG_GOODSIZE; | |
2817 | /* | |
2818 | * traverse the list of net devices and compute the minimum | |
2819 | * buffer size based upon the filter mask. | |
2820 | */ | |
6853dd48 FW |
2821 | rcu_read_lock(); |
2822 | for_each_netdev_rcu(net, dev) { | |
115c9b81 GR |
2823 | min_ifinfo_dump_size = max_t(u16, min_ifinfo_dump_size, |
2824 | if_nlmsg_size(dev, | |
2825 | ext_filter_mask)); | |
2826 | } | |
6853dd48 | 2827 | rcu_read_unlock(); |
115c9b81 | 2828 | |
93af2056 | 2829 | return nlmsg_total_size(min_ifinfo_dump_size); |
c7ac8679 GR |
2830 | } |
2831 | ||
42bad1da | 2832 | static int rtnl_dump_all(struct sk_buff *skb, struct netlink_callback *cb) |
1da177e4 LT |
2833 | { |
2834 | int idx; | |
2835 | int s_idx = cb->family; | |
2836 | ||
2837 | if (s_idx == 0) | |
2838 | s_idx = 1; | |
6853dd48 | 2839 | |
25239cee | 2840 | for (idx = 1; idx <= RTNL_FAMILY_MAX; idx++) { |
1da177e4 | 2841 | int type = cb->nlh->nlmsg_type-RTM_BASE; |
6853dd48 FW |
2842 | struct rtnl_link *handlers; |
2843 | rtnl_dumpit_func dumpit; | |
2844 | ||
1da177e4 LT |
2845 | if (idx < s_idx || idx == PF_PACKET) |
2846 | continue; | |
6853dd48 FW |
2847 | |
2848 | handlers = rtnl_dereference(rtnl_msg_handlers[idx]); | |
2849 | if (!handlers) | |
1da177e4 | 2850 | continue; |
6853dd48 FW |
2851 | |
2852 | dumpit = READ_ONCE(handlers[type].dumpit); | |
2853 | if (!dumpit) | |
2854 | continue; | |
2855 | ||
0465277f | 2856 | if (idx > s_idx) { |
1da177e4 | 2857 | memset(&cb->args[0], 0, sizeof(cb->args)); |
0465277f ND |
2858 | cb->prev_seq = 0; |
2859 | cb->seq = 0; | |
2860 | } | |
6853dd48 | 2861 | if (dumpit(skb, cb)) |
1da177e4 LT |
2862 | break; |
2863 | } | |
2864 | cb->family = idx; | |
2865 | ||
2866 | return skb->len; | |
2867 | } | |
2868 | ||
395eea6c | 2869 | struct sk_buff *rtmsg_ifinfo_build_skb(int type, struct net_device *dev, |
3d3ea5af VY |
2870 | unsigned int change, |
2871 | u32 event, gfp_t flags) | |
1da177e4 | 2872 | { |
c346dca1 | 2873 | struct net *net = dev_net(dev); |
1da177e4 | 2874 | struct sk_buff *skb; |
0ec6d3f4 | 2875 | int err = -ENOBUFS; |
c7ac8679 | 2876 | size_t if_info_size; |
1da177e4 | 2877 | |
7f294054 | 2878 | skb = nlmsg_new((if_info_size = if_nlmsg_size(dev, 0)), flags); |
0ec6d3f4 TG |
2879 | if (skb == NULL) |
2880 | goto errout; | |
1da177e4 | 2881 | |
3d3ea5af | 2882 | err = rtnl_fill_ifinfo(skb, dev, type, 0, 0, change, 0, 0, event); |
26932566 PM |
2883 | if (err < 0) { |
2884 | /* -EMSGSIZE implies BUG in if_nlmsg_size() */ | |
2885 | WARN_ON(err == -EMSGSIZE); | |
2886 | kfree_skb(skb); | |
2887 | goto errout; | |
2888 | } | |
395eea6c | 2889 | return skb; |
0ec6d3f4 TG |
2890 | errout: |
2891 | if (err < 0) | |
4b3da706 | 2892 | rtnl_set_sk_err(net, RTNLGRP_LINK, err); |
395eea6c MB |
2893 | return NULL; |
2894 | } | |
2895 | ||
2896 | void rtmsg_ifinfo_send(struct sk_buff *skb, struct net_device *dev, gfp_t flags) | |
2897 | { | |
2898 | struct net *net = dev_net(dev); | |
2899 | ||
2900 | rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, flags); | |
2901 | } | |
2902 | ||
3d3ea5af VY |
2903 | static void rtmsg_ifinfo_event(int type, struct net_device *dev, |
2904 | unsigned int change, u32 event, | |
2905 | gfp_t flags) | |
395eea6c MB |
2906 | { |
2907 | struct sk_buff *skb; | |
2908 | ||
ed2a80ab ND |
2909 | if (dev->reg_state != NETREG_REGISTERED) |
2910 | return; | |
2911 | ||
3d3ea5af | 2912 | skb = rtmsg_ifinfo_build_skb(type, dev, change, event, flags); |
395eea6c MB |
2913 | if (skb) |
2914 | rtmsg_ifinfo_send(skb, dev, flags); | |
1da177e4 | 2915 | } |
3d3ea5af VY |
2916 | |
2917 | void rtmsg_ifinfo(int type, struct net_device *dev, unsigned int change, | |
2918 | gfp_t flags) | |
2919 | { | |
8c6c918d | 2920 | rtmsg_ifinfo_event(type, dev, change, rtnl_get_event(0), flags); |
3d3ea5af | 2921 | } |
471cb5a3 | 2922 | EXPORT_SYMBOL(rtmsg_ifinfo); |
1da177e4 | 2923 | |
d83b0603 JF |
2924 | static int nlmsg_populate_fdb_fill(struct sk_buff *skb, |
2925 | struct net_device *dev, | |
1e53d5bb | 2926 | u8 *addr, u16 vid, u32 pid, u32 seq, |
1c104a6b | 2927 | int type, unsigned int flags, |
b3379041 | 2928 | int nlflags, u16 ndm_state) |
d83b0603 JF |
2929 | { |
2930 | struct nlmsghdr *nlh; | |
2931 | struct ndmsg *ndm; | |
2932 | ||
1c104a6b | 2933 | nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ndm), nlflags); |
d83b0603 JF |
2934 | if (!nlh) |
2935 | return -EMSGSIZE; | |
2936 | ||
2937 | ndm = nlmsg_data(nlh); | |
2938 | ndm->ndm_family = AF_BRIDGE; | |
2939 | ndm->ndm_pad1 = 0; | |
2940 | ndm->ndm_pad2 = 0; | |
2941 | ndm->ndm_flags = flags; | |
2942 | ndm->ndm_type = 0; | |
2943 | ndm->ndm_ifindex = dev->ifindex; | |
b3379041 | 2944 | ndm->ndm_state = ndm_state; |
d83b0603 JF |
2945 | |
2946 | if (nla_put(skb, NDA_LLADDR, ETH_ALEN, addr)) | |
2947 | goto nla_put_failure; | |
1e53d5bb HS |
2948 | if (vid) |
2949 | if (nla_put(skb, NDA_VLAN, sizeof(u16), &vid)) | |
2950 | goto nla_put_failure; | |
d83b0603 | 2951 | |
053c095a JB |
2952 | nlmsg_end(skb, nlh); |
2953 | return 0; | |
d83b0603 JF |
2954 | |
2955 | nla_put_failure: | |
2956 | nlmsg_cancel(skb, nlh); | |
2957 | return -EMSGSIZE; | |
2958 | } | |
2959 | ||
3ff661c3 JF |
2960 | static inline size_t rtnl_fdb_nlmsg_size(void) |
2961 | { | |
f82ef3e1 SD |
2962 | return NLMSG_ALIGN(sizeof(struct ndmsg)) + |
2963 | nla_total_size(ETH_ALEN) + /* NDA_LLADDR */ | |
2964 | nla_total_size(sizeof(u16)) + /* NDA_VLAN */ | |
2965 | 0; | |
3ff661c3 JF |
2966 | } |
2967 | ||
b3379041 HS |
2968 | static void rtnl_fdb_notify(struct net_device *dev, u8 *addr, u16 vid, int type, |
2969 | u16 ndm_state) | |
3ff661c3 JF |
2970 | { |
2971 | struct net *net = dev_net(dev); | |
2972 | struct sk_buff *skb; | |
2973 | int err = -ENOBUFS; | |
2974 | ||
2975 | skb = nlmsg_new(rtnl_fdb_nlmsg_size(), GFP_ATOMIC); | |
2976 | if (!skb) | |
2977 | goto errout; | |
2978 | ||
1e53d5bb | 2979 | err = nlmsg_populate_fdb_fill(skb, dev, addr, vid, |
b3379041 | 2980 | 0, 0, type, NTF_SELF, 0, ndm_state); |
3ff661c3 JF |
2981 | if (err < 0) { |
2982 | kfree_skb(skb); | |
2983 | goto errout; | |
2984 | } | |
2985 | ||
2986 | rtnl_notify(skb, net, 0, RTNLGRP_NEIGH, NULL, GFP_ATOMIC); | |
2987 | return; | |
2988 | errout: | |
2989 | rtnl_set_sk_err(net, RTNLGRP_NEIGH, err); | |
2990 | } | |
2991 | ||
090096bf VY |
2992 | /** |
2993 | * ndo_dflt_fdb_add - default netdevice operation to add an FDB entry | |
2994 | */ | |
2995 | int ndo_dflt_fdb_add(struct ndmsg *ndm, | |
2996 | struct nlattr *tb[], | |
2997 | struct net_device *dev, | |
f6f6424b | 2998 | const unsigned char *addr, u16 vid, |
090096bf VY |
2999 | u16 flags) |
3000 | { | |
3001 | int err = -EINVAL; | |
3002 | ||
3003 | /* If aging addresses are supported device will need to | |
3004 | * implement its own handler for this. | |
3005 | */ | |
3006 | if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) { | |
3007 | pr_info("%s: FDB only supports static addresses\n", dev->name); | |
3008 | return err; | |
3009 | } | |
3010 | ||
65891fea OG |
3011 | if (vid) { |
3012 | pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name); | |
3013 | return err; | |
3014 | } | |
3015 | ||
090096bf VY |
3016 | if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr)) |
3017 | err = dev_uc_add_excl(dev, addr); | |
3018 | else if (is_multicast_ether_addr(addr)) | |
3019 | err = dev_mc_add_excl(dev, addr); | |
3020 | ||
3021 | /* Only return duplicate errors if NLM_F_EXCL is set */ | |
3022 | if (err == -EEXIST && !(flags & NLM_F_EXCL)) | |
3023 | err = 0; | |
3024 | ||
3025 | return err; | |
3026 | } | |
3027 | EXPORT_SYMBOL(ndo_dflt_fdb_add); | |
3028 | ||
f6f6424b JP |
3029 | static int fdb_vid_parse(struct nlattr *vlan_attr, u16 *p_vid) |
3030 | { | |
3031 | u16 vid = 0; | |
3032 | ||
3033 | if (vlan_attr) { | |
3034 | if (nla_len(vlan_attr) != sizeof(u16)) { | |
3035 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid vlan\n"); | |
3036 | return -EINVAL; | |
3037 | } | |
3038 | ||
3039 | vid = nla_get_u16(vlan_attr); | |
3040 | ||
3041 | if (!vid || vid >= VLAN_VID_MASK) { | |
3042 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid vlan id %d\n", | |
3043 | vid); | |
3044 | return -EINVAL; | |
3045 | } | |
3046 | } | |
3047 | *p_vid = vid; | |
3048 | return 0; | |
3049 | } | |
3050 | ||
c21ef3e3 DA |
3051 | static int rtnl_fdb_add(struct sk_buff *skb, struct nlmsghdr *nlh, |
3052 | struct netlink_ext_ack *extack) | |
77162022 JF |
3053 | { |
3054 | struct net *net = sock_net(skb->sk); | |
77162022 JF |
3055 | struct ndmsg *ndm; |
3056 | struct nlattr *tb[NDA_MAX+1]; | |
3057 | struct net_device *dev; | |
3058 | u8 *addr; | |
f6f6424b | 3059 | u16 vid; |
77162022 JF |
3060 | int err; |
3061 | ||
c21ef3e3 | 3062 | err = nlmsg_parse(nlh, sizeof(*ndm), tb, NDA_MAX, NULL, extack); |
77162022 JF |
3063 | if (err < 0) |
3064 | return err; | |
3065 | ||
3066 | ndm = nlmsg_data(nlh); | |
3067 | if (ndm->ndm_ifindex == 0) { | |
3068 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid ifindex\n"); | |
3069 | return -EINVAL; | |
3070 | } | |
3071 | ||
3072 | dev = __dev_get_by_index(net, ndm->ndm_ifindex); | |
3073 | if (dev == NULL) { | |
3074 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with unknown ifindex\n"); | |
3075 | return -ENODEV; | |
3076 | } | |
3077 | ||
3078 | if (!tb[NDA_LLADDR] || nla_len(tb[NDA_LLADDR]) != ETH_ALEN) { | |
3079 | pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid address\n"); | |
3080 | return -EINVAL; | |
3081 | } | |
3082 | ||
4ca72d63 IS |
3083 | if (dev->type != ARPHRD_ETHER) { |
3084 | NL_SET_ERR_MSG(extack, "FDB add only supported for Ethernet devices"); | |
3085 | return -EINVAL; | |
3086 | } | |
3087 | ||
77162022 | 3088 | addr = nla_data(tb[NDA_LLADDR]); |
77162022 | 3089 | |
f6f6424b JP |
3090 | err = fdb_vid_parse(tb[NDA_VLAN], &vid); |
3091 | if (err) | |
3092 | return err; | |
3093 | ||
77162022 JF |
3094 | err = -EOPNOTSUPP; |
3095 | ||
3096 | /* Support fdb on master device the net/bridge default case */ | |
3097 | if ((!ndm->ndm_flags || ndm->ndm_flags & NTF_MASTER) && | |
3098 | (dev->priv_flags & IFF_BRIDGE_PORT)) { | |
898e5061 JP |
3099 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
3100 | const struct net_device_ops *ops = br_dev->netdev_ops; | |
3101 | ||
f6f6424b JP |
3102 | err = ops->ndo_fdb_add(ndm, tb, dev, addr, vid, |
3103 | nlh->nlmsg_flags); | |
77162022 JF |
3104 | if (err) |
3105 | goto out; | |
3106 | else | |
3107 | ndm->ndm_flags &= ~NTF_MASTER; | |
3108 | } | |
3109 | ||
3110 | /* Embedded bridge, macvlan, and any other device support */ | |
090096bf VY |
3111 | if ((ndm->ndm_flags & NTF_SELF)) { |
3112 | if (dev->netdev_ops->ndo_fdb_add) | |
3113 | err = dev->netdev_ops->ndo_fdb_add(ndm, tb, dev, addr, | |
f6f6424b | 3114 | vid, |
090096bf VY |
3115 | nlh->nlmsg_flags); |
3116 | else | |
f6f6424b | 3117 | err = ndo_dflt_fdb_add(ndm, tb, dev, addr, vid, |
090096bf | 3118 | nlh->nlmsg_flags); |
77162022 | 3119 | |
3ff661c3 | 3120 | if (!err) { |
b3379041 HS |
3121 | rtnl_fdb_notify(dev, addr, vid, RTM_NEWNEIGH, |
3122 | ndm->ndm_state); | |
77162022 | 3123 | ndm->ndm_flags &= ~NTF_SELF; |
3ff661c3 | 3124 | } |
77162022 JF |
3125 | } |
3126 | out: | |
3127 | return err; | |
3128 | } | |
3129 | ||
090096bf VY |
3130 | /** |
3131 | * ndo_dflt_fdb_del - default netdevice operation to delete an FDB entry | |
3132 | */ | |
3133 | int ndo_dflt_fdb_del(struct ndmsg *ndm, | |
3134 | struct nlattr *tb[], | |
3135 | struct net_device *dev, | |
f6f6424b | 3136 | const unsigned char *addr, u16 vid) |
090096bf | 3137 | { |
c8a89c4a | 3138 | int err = -EINVAL; |
090096bf VY |
3139 | |
3140 | /* If aging addresses are supported device will need to | |
3141 | * implement its own handler for this. | |
3142 | */ | |
64535993 | 3143 | if (!(ndm->ndm_state & NUD_PERMANENT)) { |
090096bf | 3144 | pr_info("%s: FDB only supports static addresses\n", dev->name); |
c8a89c4a | 3145 | return err; |
090096bf VY |
3146 | } |
3147 | ||
3148 | if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr)) | |
3149 | err = dev_uc_del(dev, addr); | |
3150 | else if (is_multicast_ether_addr(addr)) | |
3151 | err = dev_mc_del(dev, addr); | |
090096bf VY |
3152 | |
3153 | return err; | |
3154 | } | |
3155 | EXPORT_SYMBOL(ndo_dflt_fdb_del); | |
3156 | ||
c21ef3e3 DA |
3157 | static int rtnl_fdb_del(struct sk_buff *skb, struct nlmsghdr *nlh, |
3158 | struct netlink_ext_ack *extack) | |
77162022 JF |
3159 | { |
3160 | struct net *net = sock_net(skb->sk); | |
3161 | struct ndmsg *ndm; | |
1690be63 | 3162 | struct nlattr *tb[NDA_MAX+1]; |
77162022 JF |
3163 | struct net_device *dev; |
3164 | int err = -EINVAL; | |
3165 | __u8 *addr; | |
f6f6424b | 3166 | u16 vid; |
77162022 | 3167 | |
90f62cf3 | 3168 | if (!netlink_capable(skb, CAP_NET_ADMIN)) |
1690be63 VY |
3169 | return -EPERM; |
3170 | ||
c21ef3e3 | 3171 | err = nlmsg_parse(nlh, sizeof(*ndm), tb, NDA_MAX, NULL, extack); |
1690be63 VY |
3172 | if (err < 0) |
3173 | return err; | |
77162022 JF |
3174 | |
3175 | ndm = nlmsg_data(nlh); | |
3176 | if (ndm->ndm_ifindex == 0) { | |
3177 | pr_info("PF_BRIDGE: RTM_DELNEIGH with invalid ifindex\n"); | |
3178 | return -EINVAL; | |
3179 | } | |
3180 | ||
3181 | dev = __dev_get_by_index(net, ndm->ndm_ifindex); | |
3182 | if (dev == NULL) { | |
3183 | pr_info("PF_BRIDGE: RTM_DELNEIGH with unknown ifindex\n"); | |
3184 | return -ENODEV; | |
3185 | } | |
3186 | ||
1690be63 VY |
3187 | if (!tb[NDA_LLADDR] || nla_len(tb[NDA_LLADDR]) != ETH_ALEN) { |
3188 | pr_info("PF_BRIDGE: RTM_DELNEIGH with invalid address\n"); | |
3189 | return -EINVAL; | |
3190 | } | |
3191 | ||
4ca72d63 IS |
3192 | if (dev->type != ARPHRD_ETHER) { |
3193 | NL_SET_ERR_MSG(extack, "FDB delete only supported for Ethernet devices"); | |
3194 | return -EINVAL; | |
3195 | } | |
3196 | ||
1690be63 | 3197 | addr = nla_data(tb[NDA_LLADDR]); |
77162022 | 3198 | |
f6f6424b JP |
3199 | err = fdb_vid_parse(tb[NDA_VLAN], &vid); |
3200 | if (err) | |
3201 | return err; | |
3202 | ||
77162022 JF |
3203 | err = -EOPNOTSUPP; |
3204 | ||
3205 | /* Support fdb on master device the net/bridge default case */ | |
3206 | if ((!ndm->ndm_flags || ndm->ndm_flags & NTF_MASTER) && | |
3207 | (dev->priv_flags & IFF_BRIDGE_PORT)) { | |
898e5061 JP |
3208 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
3209 | const struct net_device_ops *ops = br_dev->netdev_ops; | |
77162022 | 3210 | |
898e5061 | 3211 | if (ops->ndo_fdb_del) |
f6f6424b | 3212 | err = ops->ndo_fdb_del(ndm, tb, dev, addr, vid); |
77162022 JF |
3213 | |
3214 | if (err) | |
3215 | goto out; | |
3216 | else | |
3217 | ndm->ndm_flags &= ~NTF_MASTER; | |
3218 | } | |
3219 | ||
3220 | /* Embedded bridge, macvlan, and any other device support */ | |
090096bf VY |
3221 | if (ndm->ndm_flags & NTF_SELF) { |
3222 | if (dev->netdev_ops->ndo_fdb_del) | |
f6f6424b JP |
3223 | err = dev->netdev_ops->ndo_fdb_del(ndm, tb, dev, addr, |
3224 | vid); | |
090096bf | 3225 | else |
f6f6424b | 3226 | err = ndo_dflt_fdb_del(ndm, tb, dev, addr, vid); |
77162022 | 3227 | |
3ff661c3 | 3228 | if (!err) { |
b3379041 HS |
3229 | rtnl_fdb_notify(dev, addr, vid, RTM_DELNEIGH, |
3230 | ndm->ndm_state); | |
77162022 | 3231 | ndm->ndm_flags &= ~NTF_SELF; |
3ff661c3 | 3232 | } |
77162022 JF |
3233 | } |
3234 | out: | |
3235 | return err; | |
3236 | } | |
3237 | ||
d83b0603 JF |
3238 | static int nlmsg_populate_fdb(struct sk_buff *skb, |
3239 | struct netlink_callback *cb, | |
3240 | struct net_device *dev, | |
3241 | int *idx, | |
3242 | struct netdev_hw_addr_list *list) | |
3243 | { | |
3244 | struct netdev_hw_addr *ha; | |
3245 | int err; | |
15e47304 | 3246 | u32 portid, seq; |
d83b0603 | 3247 | |
15e47304 | 3248 | portid = NETLINK_CB(cb->skb).portid; |
d83b0603 JF |
3249 | seq = cb->nlh->nlmsg_seq; |
3250 | ||
3251 | list_for_each_entry(ha, &list->list, list) { | |
d297653d | 3252 | if (*idx < cb->args[2]) |
d83b0603 JF |
3253 | goto skip; |
3254 | ||
1e53d5bb | 3255 | err = nlmsg_populate_fdb_fill(skb, dev, ha->addr, 0, |
a7a558fe | 3256 | portid, seq, |
1c104a6b | 3257 | RTM_NEWNEIGH, NTF_SELF, |
b3379041 | 3258 | NLM_F_MULTI, NUD_PERMANENT); |
d83b0603 JF |
3259 | if (err < 0) |
3260 | return err; | |
3261 | skip: | |
3262 | *idx += 1; | |
3263 | } | |
3264 | return 0; | |
3265 | } | |
3266 | ||
3267 | /** | |
2c53040f | 3268 | * ndo_dflt_fdb_dump - default netdevice operation to dump an FDB table. |
d83b0603 JF |
3269 | * @nlh: netlink message header |
3270 | * @dev: netdevice | |
3271 | * | |
3272 | * Default netdevice operation to dump the existing unicast address list. | |
91f3e7b1 | 3273 | * Returns number of addresses from list put in skb. |
d83b0603 JF |
3274 | */ |
3275 | int ndo_dflt_fdb_dump(struct sk_buff *skb, | |
3276 | struct netlink_callback *cb, | |
3277 | struct net_device *dev, | |
5d5eacb3 | 3278 | struct net_device *filter_dev, |
d297653d | 3279 | int *idx) |
d83b0603 JF |
3280 | { |
3281 | int err; | |
3282 | ||
22fa15e6 ED |
3283 | if (dev->type != ARPHRD_ETHER) |
3284 | return -EINVAL; | |
3285 | ||
d83b0603 | 3286 | netif_addr_lock_bh(dev); |
d297653d | 3287 | err = nlmsg_populate_fdb(skb, cb, dev, idx, &dev->uc); |
d83b0603 JF |
3288 | if (err) |
3289 | goto out; | |
2934c9db | 3290 | err = nlmsg_populate_fdb(skb, cb, dev, idx, &dev->mc); |
d83b0603 JF |
3291 | out: |
3292 | netif_addr_unlock_bh(dev); | |
d297653d | 3293 | return err; |
d83b0603 JF |
3294 | } |
3295 | EXPORT_SYMBOL(ndo_dflt_fdb_dump); | |
3296 | ||
77162022 JF |
3297 | static int rtnl_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb) |
3298 | { | |
77162022 | 3299 | struct net_device *dev; |
5e6d2435 | 3300 | struct nlattr *tb[IFLA_MAX+1]; |
5e6d2435 JHS |
3301 | struct net_device *br_dev = NULL; |
3302 | const struct net_device_ops *ops = NULL; | |
3303 | const struct net_device_ops *cops = NULL; | |
3304 | struct ifinfomsg *ifm = nlmsg_data(cb->nlh); | |
3305 | struct net *net = sock_net(skb->sk); | |
d297653d | 3306 | struct hlist_head *head; |
5e6d2435 JHS |
3307 | int brport_idx = 0; |
3308 | int br_idx = 0; | |
d297653d RP |
3309 | int h, s_h; |
3310 | int idx = 0, s_idx; | |
3311 | int err = 0; | |
3312 | int fidx = 0; | |
5e6d2435 | 3313 | |
5f999abb MFO |
3314 | /* A hack to preserve kernel<->userspace interface. |
3315 | * Before Linux v4.12 this code accepted ndmsg since iproute2 v3.3.0. | |
3316 | * However, ndmsg is shorter than ifinfomsg thus nlmsg_parse() bails. | |
3317 | * So, check for ndmsg with an optional u32 attribute (not used here). | |
3318 | * Fortunately these sizes don't conflict with the size of ifinfomsg | |
3319 | * with an optional attribute. | |
3320 | */ | |
3321 | if (nlmsg_len(cb->nlh) != sizeof(struct ndmsg) && | |
3322 | (nlmsg_len(cb->nlh) != sizeof(struct ndmsg) + | |
3323 | nla_attr_size(sizeof(u32)))) { | |
3324 | err = nlmsg_parse(cb->nlh, sizeof(struct ifinfomsg), tb, | |
3325 | IFLA_MAX, ifla_policy, NULL); | |
3326 | if (err < 0) { | |
3327 | return -EINVAL; | |
3328 | } else if (err == 0) { | |
3329 | if (tb[IFLA_MASTER]) | |
3330 | br_idx = nla_get_u32(tb[IFLA_MASTER]); | |
3331 | } | |
5e6d2435 | 3332 | |
5f999abb MFO |
3333 | brport_idx = ifm->ifi_index; |
3334 | } | |
5e6d2435 JHS |
3335 | |
3336 | if (br_idx) { | |
3337 | br_dev = __dev_get_by_index(net, br_idx); | |
3338 | if (!br_dev) | |
3339 | return -ENODEV; | |
3340 | ||
3341 | ops = br_dev->netdev_ops; | |
5e6d2435 JHS |
3342 | } |
3343 | ||
d297653d RP |
3344 | s_h = cb->args[0]; |
3345 | s_idx = cb->args[1]; | |
5e6d2435 | 3346 | |
d297653d RP |
3347 | for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) { |
3348 | idx = 0; | |
3349 | head = &net->dev_index_head[h]; | |
3350 | hlist_for_each_entry(dev, head, index_hlist) { | |
5e6d2435 | 3351 | |
d297653d | 3352 | if (brport_idx && (dev->ifindex != brport_idx)) |
5e6d2435 JHS |
3353 | continue; |
3354 | ||
d297653d RP |
3355 | if (!br_idx) { /* user did not specify a specific bridge */ |
3356 | if (dev->priv_flags & IFF_BRIDGE_PORT) { | |
3357 | br_dev = netdev_master_upper_dev_get(dev); | |
3358 | cops = br_dev->netdev_ops; | |
3359 | } | |
3360 | } else { | |
3361 | if (dev != br_dev && | |
3362 | !(dev->priv_flags & IFF_BRIDGE_PORT)) | |
3363 | continue; | |
5e6d2435 | 3364 | |
d297653d RP |
3365 | if (br_dev != netdev_master_upper_dev_get(dev) && |
3366 | !(dev->priv_flags & IFF_EBRIDGE)) | |
3367 | continue; | |
3368 | cops = ops; | |
3369 | } | |
77162022 | 3370 | |
d297653d RP |
3371 | if (idx < s_idx) |
3372 | goto cont; | |
77162022 | 3373 | |
d297653d RP |
3374 | if (dev->priv_flags & IFF_BRIDGE_PORT) { |
3375 | if (cops && cops->ndo_fdb_dump) { | |
3376 | err = cops->ndo_fdb_dump(skb, cb, | |
3377 | br_dev, dev, | |
3378 | &fidx); | |
3379 | if (err == -EMSGSIZE) | |
3380 | goto out; | |
3381 | } | |
3382 | } | |
5e6d2435 | 3383 | |
d297653d RP |
3384 | if (dev->netdev_ops->ndo_fdb_dump) |
3385 | err = dev->netdev_ops->ndo_fdb_dump(skb, cb, | |
3386 | dev, NULL, | |
3387 | &fidx); | |
3388 | else | |
3389 | err = ndo_dflt_fdb_dump(skb, cb, dev, NULL, | |
3390 | &fidx); | |
3391 | if (err == -EMSGSIZE) | |
3392 | goto out; | |
3393 | ||
3394 | cops = NULL; | |
3395 | ||
3396 | /* reset fdb offset to 0 for rest of the interfaces */ | |
3397 | cb->args[2] = 0; | |
3398 | fidx = 0; | |
3399 | cont: | |
3400 | idx++; | |
3401 | } | |
77162022 | 3402 | } |
77162022 | 3403 | |
d297653d RP |
3404 | out: |
3405 | cb->args[0] = h; | |
3406 | cb->args[1] = idx; | |
3407 | cb->args[2] = fidx; | |
3408 | ||
77162022 JF |
3409 | return skb->len; |
3410 | } | |
3411 | ||
2c3c031c SF |
3412 | static int brport_nla_put_flag(struct sk_buff *skb, u32 flags, u32 mask, |
3413 | unsigned int attrnum, unsigned int flag) | |
3414 | { | |
3415 | if (mask & flag) | |
3416 | return nla_put_u8(skb, attrnum, !!(flags & flag)); | |
3417 | return 0; | |
3418 | } | |
3419 | ||
815cccbf | 3420 | int ndo_dflt_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq, |
2c3c031c | 3421 | struct net_device *dev, u16 mode, |
7d4f8d87 SF |
3422 | u32 flags, u32 mask, int nlflags, |
3423 | u32 filter_mask, | |
3424 | int (*vlan_fill)(struct sk_buff *skb, | |
3425 | struct net_device *dev, | |
3426 | u32 filter_mask)) | |
815cccbf JF |
3427 | { |
3428 | struct nlmsghdr *nlh; | |
3429 | struct ifinfomsg *ifm; | |
3430 | struct nlattr *br_afspec; | |
2c3c031c | 3431 | struct nlattr *protinfo; |
815cccbf | 3432 | u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN; |
898e5061 | 3433 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
7d4f8d87 | 3434 | int err = 0; |
815cccbf | 3435 | |
46c264da | 3436 | nlh = nlmsg_put(skb, pid, seq, RTM_NEWLINK, sizeof(*ifm), nlflags); |
815cccbf JF |
3437 | if (nlh == NULL) |
3438 | return -EMSGSIZE; | |
3439 | ||
3440 | ifm = nlmsg_data(nlh); | |
3441 | ifm->ifi_family = AF_BRIDGE; | |
3442 | ifm->__ifi_pad = 0; | |
3443 | ifm->ifi_type = dev->type; | |
3444 | ifm->ifi_index = dev->ifindex; | |
3445 | ifm->ifi_flags = dev_get_flags(dev); | |
3446 | ifm->ifi_change = 0; | |
3447 | ||
3448 | ||
3449 | if (nla_put_string(skb, IFLA_IFNAME, dev->name) || | |
3450 | nla_put_u32(skb, IFLA_MTU, dev->mtu) || | |
3451 | nla_put_u8(skb, IFLA_OPERSTATE, operstate) || | |
898e5061 JP |
3452 | (br_dev && |
3453 | nla_put_u32(skb, IFLA_MASTER, br_dev->ifindex)) || | |
815cccbf JF |
3454 | (dev->addr_len && |
3455 | nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) || | |
a54acb3a ND |
3456 | (dev->ifindex != dev_get_iflink(dev) && |
3457 | nla_put_u32(skb, IFLA_LINK, dev_get_iflink(dev)))) | |
815cccbf JF |
3458 | goto nla_put_failure; |
3459 | ||
3460 | br_afspec = nla_nest_start(skb, IFLA_AF_SPEC); | |
3461 | if (!br_afspec) | |
3462 | goto nla_put_failure; | |
3463 | ||
1d460b98 | 3464 | if (nla_put_u16(skb, IFLA_BRIDGE_FLAGS, BRIDGE_FLAGS_SELF)) { |
815cccbf JF |
3465 | nla_nest_cancel(skb, br_afspec); |
3466 | goto nla_put_failure; | |
3467 | } | |
1d460b98 RP |
3468 | |
3469 | if (mode != BRIDGE_MODE_UNDEF) { | |
3470 | if (nla_put_u16(skb, IFLA_BRIDGE_MODE, mode)) { | |
3471 | nla_nest_cancel(skb, br_afspec); | |
3472 | goto nla_put_failure; | |
3473 | } | |
3474 | } | |
7d4f8d87 SF |
3475 | if (vlan_fill) { |
3476 | err = vlan_fill(skb, dev, filter_mask); | |
3477 | if (err) { | |
3478 | nla_nest_cancel(skb, br_afspec); | |
3479 | goto nla_put_failure; | |
3480 | } | |
3481 | } | |
815cccbf JF |
3482 | nla_nest_end(skb, br_afspec); |
3483 | ||
2c3c031c SF |
3484 | protinfo = nla_nest_start(skb, IFLA_PROTINFO | NLA_F_NESTED); |
3485 | if (!protinfo) | |
3486 | goto nla_put_failure; | |
3487 | ||
3488 | if (brport_nla_put_flag(skb, flags, mask, | |
3489 | IFLA_BRPORT_MODE, BR_HAIRPIN_MODE) || | |
3490 | brport_nla_put_flag(skb, flags, mask, | |
3491 | IFLA_BRPORT_GUARD, BR_BPDU_GUARD) || | |
3492 | brport_nla_put_flag(skb, flags, mask, | |
3493 | IFLA_BRPORT_FAST_LEAVE, | |
3494 | BR_MULTICAST_FAST_LEAVE) || | |
3495 | brport_nla_put_flag(skb, flags, mask, | |
3496 | IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK) || | |
3497 | brport_nla_put_flag(skb, flags, mask, | |
3498 | IFLA_BRPORT_LEARNING, BR_LEARNING) || | |
3499 | brport_nla_put_flag(skb, flags, mask, | |
3500 | IFLA_BRPORT_LEARNING_SYNC, BR_LEARNING_SYNC) || | |
3501 | brport_nla_put_flag(skb, flags, mask, | |
3502 | IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD) || | |
3503 | brport_nla_put_flag(skb, flags, mask, | |
3504 | IFLA_BRPORT_PROXYARP, BR_PROXYARP)) { | |
3505 | nla_nest_cancel(skb, protinfo); | |
3506 | goto nla_put_failure; | |
3507 | } | |
3508 | ||
3509 | nla_nest_end(skb, protinfo); | |
3510 | ||
053c095a JB |
3511 | nlmsg_end(skb, nlh); |
3512 | return 0; | |
815cccbf JF |
3513 | nla_put_failure: |
3514 | nlmsg_cancel(skb, nlh); | |
7d4f8d87 | 3515 | return err ? err : -EMSGSIZE; |
815cccbf | 3516 | } |
7d4f8d87 | 3517 | EXPORT_SYMBOL_GPL(ndo_dflt_bridge_getlink); |
815cccbf | 3518 | |
e5a55a89 JF |
3519 | static int rtnl_bridge_getlink(struct sk_buff *skb, struct netlink_callback *cb) |
3520 | { | |
3521 | struct net *net = sock_net(skb->sk); | |
3522 | struct net_device *dev; | |
3523 | int idx = 0; | |
3524 | u32 portid = NETLINK_CB(cb->skb).portid; | |
3525 | u32 seq = cb->nlh->nlmsg_seq; | |
6cbdceeb | 3526 | u32 filter_mask = 0; |
d64f69b0 | 3527 | int err; |
6cbdceeb | 3528 | |
aa68c20f TG |
3529 | if (nlmsg_len(cb->nlh) > sizeof(struct ifinfomsg)) { |
3530 | struct nlattr *extfilt; | |
3531 | ||
3532 | extfilt = nlmsg_find_attr(cb->nlh, sizeof(struct ifinfomsg), | |
3533 | IFLA_EXT_MASK); | |
3534 | if (extfilt) { | |
3535 | if (nla_len(extfilt) < sizeof(filter_mask)) | |
3536 | return -EINVAL; | |
3537 | ||
3538 | filter_mask = nla_get_u32(extfilt); | |
3539 | } | |
3540 | } | |
e5a55a89 JF |
3541 | |
3542 | rcu_read_lock(); | |
3543 | for_each_netdev_rcu(net, dev) { | |
3544 | const struct net_device_ops *ops = dev->netdev_ops; | |
898e5061 | 3545 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
e5a55a89 | 3546 | |
898e5061 | 3547 | if (br_dev && br_dev->netdev_ops->ndo_bridge_getlink) { |
d64f69b0 RP |
3548 | if (idx >= cb->args[0]) { |
3549 | err = br_dev->netdev_ops->ndo_bridge_getlink( | |
3550 | skb, portid, seq, dev, | |
3551 | filter_mask, NLM_F_MULTI); | |
f6c5775f DA |
3552 | if (err < 0 && err != -EOPNOTSUPP) { |
3553 | if (likely(skb->len)) | |
3554 | break; | |
3555 | ||
3556 | goto out_err; | |
3557 | } | |
d64f69b0 | 3558 | } |
25b1e679 | 3559 | idx++; |
e5a55a89 JF |
3560 | } |
3561 | ||
3562 | if (ops->ndo_bridge_getlink) { | |
d64f69b0 RP |
3563 | if (idx >= cb->args[0]) { |
3564 | err = ops->ndo_bridge_getlink(skb, portid, | |
3565 | seq, dev, | |
3566 | filter_mask, | |
3567 | NLM_F_MULTI); | |
f6c5775f DA |
3568 | if (err < 0 && err != -EOPNOTSUPP) { |
3569 | if (likely(skb->len)) | |
3570 | break; | |
3571 | ||
3572 | goto out_err; | |
3573 | } | |
d64f69b0 | 3574 | } |
25b1e679 | 3575 | idx++; |
e5a55a89 JF |
3576 | } |
3577 | } | |
f6c5775f DA |
3578 | err = skb->len; |
3579 | out_err: | |
e5a55a89 JF |
3580 | rcu_read_unlock(); |
3581 | cb->args[0] = idx; | |
3582 | ||
f6c5775f | 3583 | return err; |
e5a55a89 JF |
3584 | } |
3585 | ||
2469ffd7 JF |
3586 | static inline size_t bridge_nlmsg_size(void) |
3587 | { | |
3588 | return NLMSG_ALIGN(sizeof(struct ifinfomsg)) | |
3589 | + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */ | |
3590 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */ | |
3591 | + nla_total_size(sizeof(u32)) /* IFLA_MASTER */ | |
3592 | + nla_total_size(sizeof(u32)) /* IFLA_MTU */ | |
3593 | + nla_total_size(sizeof(u32)) /* IFLA_LINK */ | |
3594 | + nla_total_size(sizeof(u32)) /* IFLA_OPERSTATE */ | |
3595 | + nla_total_size(sizeof(u8)) /* IFLA_PROTINFO */ | |
3596 | + nla_total_size(sizeof(struct nlattr)) /* IFLA_AF_SPEC */ | |
3597 | + nla_total_size(sizeof(u16)) /* IFLA_BRIDGE_FLAGS */ | |
3598 | + nla_total_size(sizeof(u16)); /* IFLA_BRIDGE_MODE */ | |
3599 | } | |
3600 | ||
02dba438 | 3601 | static int rtnl_bridge_notify(struct net_device *dev) |
2469ffd7 JF |
3602 | { |
3603 | struct net *net = dev_net(dev); | |
2469ffd7 JF |
3604 | struct sk_buff *skb; |
3605 | int err = -EOPNOTSUPP; | |
3606 | ||
02dba438 RP |
3607 | if (!dev->netdev_ops->ndo_bridge_getlink) |
3608 | return 0; | |
3609 | ||
2469ffd7 JF |
3610 | skb = nlmsg_new(bridge_nlmsg_size(), GFP_ATOMIC); |
3611 | if (!skb) { | |
3612 | err = -ENOMEM; | |
3613 | goto errout; | |
3614 | } | |
3615 | ||
46c264da | 3616 | err = dev->netdev_ops->ndo_bridge_getlink(skb, 0, 0, dev, 0, 0); |
02dba438 RP |
3617 | if (err < 0) |
3618 | goto errout; | |
2469ffd7 | 3619 | |
59ccaaaa RP |
3620 | if (!skb->len) |
3621 | goto errout; | |
3622 | ||
2469ffd7 JF |
3623 | rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC); |
3624 | return 0; | |
3625 | errout: | |
3626 | WARN_ON(err == -EMSGSIZE); | |
3627 | kfree_skb(skb); | |
59ccaaaa RP |
3628 | if (err) |
3629 | rtnl_set_sk_err(net, RTNLGRP_LINK, err); | |
2469ffd7 JF |
3630 | return err; |
3631 | } | |
3632 | ||
c21ef3e3 DA |
3633 | static int rtnl_bridge_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, |
3634 | struct netlink_ext_ack *extack) | |
e5a55a89 JF |
3635 | { |
3636 | struct net *net = sock_net(skb->sk); | |
3637 | struct ifinfomsg *ifm; | |
3638 | struct net_device *dev; | |
2469ffd7 JF |
3639 | struct nlattr *br_spec, *attr = NULL; |
3640 | int rem, err = -EOPNOTSUPP; | |
4de8b413 | 3641 | u16 flags = 0; |
c38e01b8 | 3642 | bool have_flags = false; |
e5a55a89 JF |
3643 | |
3644 | if (nlmsg_len(nlh) < sizeof(*ifm)) | |
3645 | return -EINVAL; | |
3646 | ||
3647 | ifm = nlmsg_data(nlh); | |
3648 | if (ifm->ifi_family != AF_BRIDGE) | |
3649 | return -EPFNOSUPPORT; | |
3650 | ||
3651 | dev = __dev_get_by_index(net, ifm->ifi_index); | |
3652 | if (!dev) { | |
3653 | pr_info("PF_BRIDGE: RTM_SETLINK with unknown ifindex\n"); | |
3654 | return -ENODEV; | |
3655 | } | |
3656 | ||
2469ffd7 JF |
3657 | br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); |
3658 | if (br_spec) { | |
3659 | nla_for_each_nested(attr, br_spec, rem) { | |
3660 | if (nla_type(attr) == IFLA_BRIDGE_FLAGS) { | |
6e8d1c55 TG |
3661 | if (nla_len(attr) < sizeof(flags)) |
3662 | return -EINVAL; | |
3663 | ||
c38e01b8 | 3664 | have_flags = true; |
2469ffd7 JF |
3665 | flags = nla_get_u16(attr); |
3666 | break; | |
3667 | } | |
3668 | } | |
3669 | } | |
3670 | ||
3671 | if (!flags || (flags & BRIDGE_FLAGS_MASTER)) { | |
898e5061 JP |
3672 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
3673 | ||
3674 | if (!br_dev || !br_dev->netdev_ops->ndo_bridge_setlink) { | |
2469ffd7 JF |
3675 | err = -EOPNOTSUPP; |
3676 | goto out; | |
3677 | } | |
3678 | ||
add511b3 | 3679 | err = br_dev->netdev_ops->ndo_bridge_setlink(dev, nlh, flags); |
e5a55a89 JF |
3680 | if (err) |
3681 | goto out; | |
2469ffd7 JF |
3682 | |
3683 | flags &= ~BRIDGE_FLAGS_MASTER; | |
e5a55a89 JF |
3684 | } |
3685 | ||
2469ffd7 JF |
3686 | if ((flags & BRIDGE_FLAGS_SELF)) { |
3687 | if (!dev->netdev_ops->ndo_bridge_setlink) | |
3688 | err = -EOPNOTSUPP; | |
3689 | else | |
add511b3 RP |
3690 | err = dev->netdev_ops->ndo_bridge_setlink(dev, nlh, |
3691 | flags); | |
02dba438 | 3692 | if (!err) { |
2469ffd7 | 3693 | flags &= ~BRIDGE_FLAGS_SELF; |
02dba438 RP |
3694 | |
3695 | /* Generate event to notify upper layer of bridge | |
3696 | * change | |
3697 | */ | |
3698 | err = rtnl_bridge_notify(dev); | |
3699 | } | |
2469ffd7 | 3700 | } |
e5a55a89 | 3701 | |
c38e01b8 | 3702 | if (have_flags) |
2469ffd7 | 3703 | memcpy(nla_data(attr), &flags, sizeof(flags)); |
e5a55a89 JF |
3704 | out: |
3705 | return err; | |
3706 | } | |
3707 | ||
c21ef3e3 DA |
3708 | static int rtnl_bridge_dellink(struct sk_buff *skb, struct nlmsghdr *nlh, |
3709 | struct netlink_ext_ack *extack) | |
407af329 VY |
3710 | { |
3711 | struct net *net = sock_net(skb->sk); | |
3712 | struct ifinfomsg *ifm; | |
3713 | struct net_device *dev; | |
3714 | struct nlattr *br_spec, *attr = NULL; | |
3715 | int rem, err = -EOPNOTSUPP; | |
4de8b413 | 3716 | u16 flags = 0; |
407af329 VY |
3717 | bool have_flags = false; |
3718 | ||
3719 | if (nlmsg_len(nlh) < sizeof(*ifm)) | |
3720 | return -EINVAL; | |
3721 | ||
3722 | ifm = nlmsg_data(nlh); | |
3723 | if (ifm->ifi_family != AF_BRIDGE) | |
3724 | return -EPFNOSUPPORT; | |
3725 | ||
3726 | dev = __dev_get_by_index(net, ifm->ifi_index); | |
3727 | if (!dev) { | |
3728 | pr_info("PF_BRIDGE: RTM_SETLINK with unknown ifindex\n"); | |
3729 | return -ENODEV; | |
3730 | } | |
3731 | ||
3732 | br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); | |
3733 | if (br_spec) { | |
3734 | nla_for_each_nested(attr, br_spec, rem) { | |
3735 | if (nla_type(attr) == IFLA_BRIDGE_FLAGS) { | |
6e8d1c55 TG |
3736 | if (nla_len(attr) < sizeof(flags)) |
3737 | return -EINVAL; | |
3738 | ||
407af329 VY |
3739 | have_flags = true; |
3740 | flags = nla_get_u16(attr); | |
3741 | break; | |
3742 | } | |
3743 | } | |
3744 | } | |
3745 | ||
407af329 VY |
3746 | if (!flags || (flags & BRIDGE_FLAGS_MASTER)) { |
3747 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); | |
3748 | ||
3749 | if (!br_dev || !br_dev->netdev_ops->ndo_bridge_dellink) { | |
3750 | err = -EOPNOTSUPP; | |
3751 | goto out; | |
3752 | } | |
3753 | ||
add511b3 | 3754 | err = br_dev->netdev_ops->ndo_bridge_dellink(dev, nlh, flags); |
407af329 VY |
3755 | if (err) |
3756 | goto out; | |
3757 | ||
3758 | flags &= ~BRIDGE_FLAGS_MASTER; | |
3759 | } | |
3760 | ||
3761 | if ((flags & BRIDGE_FLAGS_SELF)) { | |
3762 | if (!dev->netdev_ops->ndo_bridge_dellink) | |
3763 | err = -EOPNOTSUPP; | |
3764 | else | |
add511b3 RP |
3765 | err = dev->netdev_ops->ndo_bridge_dellink(dev, nlh, |
3766 | flags); | |
407af329 | 3767 | |
02dba438 | 3768 | if (!err) { |
407af329 | 3769 | flags &= ~BRIDGE_FLAGS_SELF; |
02dba438 RP |
3770 | |
3771 | /* Generate event to notify upper layer of bridge | |
3772 | * change | |
3773 | */ | |
3774 | err = rtnl_bridge_notify(dev); | |
3775 | } | |
407af329 VY |
3776 | } |
3777 | ||
3778 | if (have_flags) | |
3779 | memcpy(nla_data(attr), &flags, sizeof(flags)); | |
407af329 VY |
3780 | out: |
3781 | return err; | |
3782 | } | |
3783 | ||
e8872a25 NA |
3784 | static bool stats_attr_valid(unsigned int mask, int attrid, int idxattr) |
3785 | { | |
3786 | return (mask & IFLA_STATS_FILTER_BIT(attrid)) && | |
3787 | (!idxattr || idxattr == attrid); | |
3788 | } | |
3789 | ||
69ae6ad2 NF |
3790 | #define IFLA_OFFLOAD_XSTATS_FIRST (IFLA_OFFLOAD_XSTATS_UNSPEC + 1) |
3791 | static int rtnl_get_offload_stats_attr_size(int attr_id) | |
3792 | { | |
3793 | switch (attr_id) { | |
3794 | case IFLA_OFFLOAD_XSTATS_CPU_HIT: | |
3795 | return sizeof(struct rtnl_link_stats64); | |
3796 | } | |
3797 | ||
3798 | return 0; | |
3799 | } | |
3800 | ||
3801 | static int rtnl_get_offload_stats(struct sk_buff *skb, struct net_device *dev, | |
3802 | int *prividx) | |
3803 | { | |
3804 | struct nlattr *attr = NULL; | |
3805 | int attr_id, size; | |
3806 | void *attr_data; | |
3807 | int err; | |
3808 | ||
3809 | if (!(dev->netdev_ops && dev->netdev_ops->ndo_has_offload_stats && | |
3810 | dev->netdev_ops->ndo_get_offload_stats)) | |
3811 | return -ENODATA; | |
3812 | ||
3813 | for (attr_id = IFLA_OFFLOAD_XSTATS_FIRST; | |
3814 | attr_id <= IFLA_OFFLOAD_XSTATS_MAX; attr_id++) { | |
3815 | if (attr_id < *prividx) | |
3816 | continue; | |
3817 | ||
3818 | size = rtnl_get_offload_stats_attr_size(attr_id); | |
3819 | if (!size) | |
3820 | continue; | |
3821 | ||
3df5b3c6 | 3822 | if (!dev->netdev_ops->ndo_has_offload_stats(dev, attr_id)) |
69ae6ad2 NF |
3823 | continue; |
3824 | ||
3825 | attr = nla_reserve_64bit(skb, attr_id, size, | |
3826 | IFLA_OFFLOAD_XSTATS_UNSPEC); | |
3827 | if (!attr) | |
3828 | goto nla_put_failure; | |
3829 | ||
3830 | attr_data = nla_data(attr); | |
3831 | memset(attr_data, 0, size); | |
3832 | err = dev->netdev_ops->ndo_get_offload_stats(attr_id, dev, | |
3833 | attr_data); | |
3834 | if (err) | |
3835 | goto get_offload_stats_failure; | |
3836 | } | |
3837 | ||
3838 | if (!attr) | |
3839 | return -ENODATA; | |
3840 | ||
3841 | *prividx = 0; | |
3842 | return 0; | |
3843 | ||
3844 | nla_put_failure: | |
3845 | err = -EMSGSIZE; | |
3846 | get_offload_stats_failure: | |
3847 | *prividx = attr_id; | |
3848 | return err; | |
3849 | } | |
3850 | ||
3851 | static int rtnl_get_offload_stats_size(const struct net_device *dev) | |
3852 | { | |
3853 | int nla_size = 0; | |
3854 | int attr_id; | |
3855 | int size; | |
3856 | ||
3857 | if (!(dev->netdev_ops && dev->netdev_ops->ndo_has_offload_stats && | |
3858 | dev->netdev_ops->ndo_get_offload_stats)) | |
3859 | return 0; | |
3860 | ||
3861 | for (attr_id = IFLA_OFFLOAD_XSTATS_FIRST; | |
3862 | attr_id <= IFLA_OFFLOAD_XSTATS_MAX; attr_id++) { | |
3df5b3c6 | 3863 | if (!dev->netdev_ops->ndo_has_offload_stats(dev, attr_id)) |
69ae6ad2 NF |
3864 | continue; |
3865 | size = rtnl_get_offload_stats_attr_size(attr_id); | |
3866 | nla_size += nla_total_size_64bit(size); | |
3867 | } | |
3868 | ||
3869 | if (nla_size != 0) | |
3870 | nla_size += nla_total_size(0); | |
3871 | ||
3872 | return nla_size; | |
3873 | } | |
3874 | ||
10c9ead9 RP |
3875 | static int rtnl_fill_statsinfo(struct sk_buff *skb, struct net_device *dev, |
3876 | int type, u32 pid, u32 seq, u32 change, | |
e8872a25 NA |
3877 | unsigned int flags, unsigned int filter_mask, |
3878 | int *idxattr, int *prividx) | |
10c9ead9 RP |
3879 | { |
3880 | struct if_stats_msg *ifsm; | |
3881 | struct nlmsghdr *nlh; | |
3882 | struct nlattr *attr; | |
e8872a25 | 3883 | int s_prividx = *prividx; |
69ae6ad2 | 3884 | int err; |
10c9ead9 RP |
3885 | |
3886 | ASSERT_RTNL(); | |
3887 | ||
3888 | nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ifsm), flags); | |
3889 | if (!nlh) | |
3890 | return -EMSGSIZE; | |
3891 | ||
3892 | ifsm = nlmsg_data(nlh); | |
ce024f42 NA |
3893 | ifsm->family = PF_UNSPEC; |
3894 | ifsm->pad1 = 0; | |
3895 | ifsm->pad2 = 0; | |
10c9ead9 RP |
3896 | ifsm->ifindex = dev->ifindex; |
3897 | ifsm->filter_mask = filter_mask; | |
3898 | ||
e8872a25 | 3899 | if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_64, *idxattr)) { |
10c9ead9 | 3900 | struct rtnl_link_stats64 *sp; |
10c9ead9 | 3901 | |
58414d32 ND |
3902 | attr = nla_reserve_64bit(skb, IFLA_STATS_LINK_64, |
3903 | sizeof(struct rtnl_link_stats64), | |
3904 | IFLA_STATS_UNSPEC); | |
10c9ead9 RP |
3905 | if (!attr) |
3906 | goto nla_put_failure; | |
3907 | ||
3908 | sp = nla_data(attr); | |
3909 | dev_get_stats(dev, sp); | |
3910 | } | |
3911 | ||
97a47fac NA |
3912 | if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_XSTATS, *idxattr)) { |
3913 | const struct rtnl_link_ops *ops = dev->rtnl_link_ops; | |
3914 | ||
3915 | if (ops && ops->fill_linkxstats) { | |
97a47fac NA |
3916 | *idxattr = IFLA_STATS_LINK_XSTATS; |
3917 | attr = nla_nest_start(skb, | |
3918 | IFLA_STATS_LINK_XSTATS); | |
3919 | if (!attr) | |
3920 | goto nla_put_failure; | |
3921 | ||
80e73cc5 NA |
3922 | err = ops->fill_linkxstats(skb, dev, prividx, *idxattr); |
3923 | nla_nest_end(skb, attr); | |
3924 | if (err) | |
3925 | goto nla_put_failure; | |
3926 | *idxattr = 0; | |
3927 | } | |
3928 | } | |
3929 | ||
3930 | if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_XSTATS_SLAVE, | |
3931 | *idxattr)) { | |
3932 | const struct rtnl_link_ops *ops = NULL; | |
3933 | const struct net_device *master; | |
3934 | ||
3935 | master = netdev_master_upper_dev_get(dev); | |
3936 | if (master) | |
3937 | ops = master->rtnl_link_ops; | |
3938 | if (ops && ops->fill_linkxstats) { | |
80e73cc5 NA |
3939 | *idxattr = IFLA_STATS_LINK_XSTATS_SLAVE; |
3940 | attr = nla_nest_start(skb, | |
3941 | IFLA_STATS_LINK_XSTATS_SLAVE); | |
3942 | if (!attr) | |
3943 | goto nla_put_failure; | |
3944 | ||
3945 | err = ops->fill_linkxstats(skb, dev, prividx, *idxattr); | |
97a47fac NA |
3946 | nla_nest_end(skb, attr); |
3947 | if (err) | |
3948 | goto nla_put_failure; | |
3949 | *idxattr = 0; | |
3950 | } | |
3951 | } | |
3952 | ||
69ae6ad2 NF |
3953 | if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_OFFLOAD_XSTATS, |
3954 | *idxattr)) { | |
3955 | *idxattr = IFLA_STATS_LINK_OFFLOAD_XSTATS; | |
3956 | attr = nla_nest_start(skb, IFLA_STATS_LINK_OFFLOAD_XSTATS); | |
3957 | if (!attr) | |
3958 | goto nla_put_failure; | |
3959 | ||
3960 | err = rtnl_get_offload_stats(skb, dev, prividx); | |
3961 | if (err == -ENODATA) | |
3962 | nla_nest_cancel(skb, attr); | |
3963 | else | |
3964 | nla_nest_end(skb, attr); | |
3965 | ||
3966 | if (err && err != -ENODATA) | |
3967 | goto nla_put_failure; | |
3968 | *idxattr = 0; | |
3969 | } | |
3970 | ||
aefb4d4a RS |
3971 | if (stats_attr_valid(filter_mask, IFLA_STATS_AF_SPEC, *idxattr)) { |
3972 | struct rtnl_af_ops *af_ops; | |
3973 | ||
3974 | *idxattr = IFLA_STATS_AF_SPEC; | |
3975 | attr = nla_nest_start(skb, IFLA_STATS_AF_SPEC); | |
3976 | if (!attr) | |
3977 | goto nla_put_failure; | |
3978 | ||
3979 | list_for_each_entry(af_ops, &rtnl_af_ops, list) { | |
3980 | if (af_ops->fill_stats_af) { | |
3981 | struct nlattr *af; | |
3982 | int err; | |
3983 | ||
3984 | af = nla_nest_start(skb, af_ops->family); | |
3985 | if (!af) | |
3986 | goto nla_put_failure; | |
3987 | ||
3988 | err = af_ops->fill_stats_af(skb, dev); | |
3989 | ||
3990 | if (err == -ENODATA) | |
3991 | nla_nest_cancel(skb, af); | |
3992 | else if (err < 0) | |
3993 | goto nla_put_failure; | |
3994 | ||
3995 | nla_nest_end(skb, af); | |
3996 | } | |
3997 | } | |
3998 | ||
3999 | nla_nest_end(skb, attr); | |
4000 | ||
4001 | *idxattr = 0; | |
4002 | } | |
4003 | ||
10c9ead9 RP |
4004 | nlmsg_end(skb, nlh); |
4005 | ||
4006 | return 0; | |
4007 | ||
4008 | nla_put_failure: | |
e8872a25 NA |
4009 | /* not a multi message or no progress mean a real error */ |
4010 | if (!(flags & NLM_F_MULTI) || s_prividx == *prividx) | |
4011 | nlmsg_cancel(skb, nlh); | |
4012 | else | |
4013 | nlmsg_end(skb, nlh); | |
10c9ead9 RP |
4014 | |
4015 | return -EMSGSIZE; | |
4016 | } | |
4017 | ||
10c9ead9 RP |
4018 | static size_t if_nlmsg_stats_size(const struct net_device *dev, |
4019 | u32 filter_mask) | |
4020 | { | |
4021 | size_t size = 0; | |
4022 | ||
e8872a25 | 4023 | if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_64, 0)) |
10c9ead9 RP |
4024 | size += nla_total_size_64bit(sizeof(struct rtnl_link_stats64)); |
4025 | ||
97a47fac NA |
4026 | if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_XSTATS, 0)) { |
4027 | const struct rtnl_link_ops *ops = dev->rtnl_link_ops; | |
80e73cc5 | 4028 | int attr = IFLA_STATS_LINK_XSTATS; |
97a47fac NA |
4029 | |
4030 | if (ops && ops->get_linkxstats_size) { | |
80e73cc5 NA |
4031 | size += nla_total_size(ops->get_linkxstats_size(dev, |
4032 | attr)); | |
97a47fac NA |
4033 | /* for IFLA_STATS_LINK_XSTATS */ |
4034 | size += nla_total_size(0); | |
4035 | } | |
4036 | } | |
4037 | ||
80e73cc5 NA |
4038 | if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_XSTATS_SLAVE, 0)) { |
4039 | struct net_device *_dev = (struct net_device *)dev; | |
4040 | const struct rtnl_link_ops *ops = NULL; | |
4041 | const struct net_device *master; | |
4042 | ||
4043 | /* netdev_master_upper_dev_get can't take const */ | |
4044 | master = netdev_master_upper_dev_get(_dev); | |
4045 | if (master) | |
4046 | ops = master->rtnl_link_ops; | |
4047 | if (ops && ops->get_linkxstats_size) { | |
4048 | int attr = IFLA_STATS_LINK_XSTATS_SLAVE; | |
4049 | ||
4050 | size += nla_total_size(ops->get_linkxstats_size(dev, | |
4051 | attr)); | |
4052 | /* for IFLA_STATS_LINK_XSTATS_SLAVE */ | |
4053 | size += nla_total_size(0); | |
4054 | } | |
4055 | } | |
4056 | ||
69ae6ad2 NF |
4057 | if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_OFFLOAD_XSTATS, 0)) |
4058 | size += rtnl_get_offload_stats_size(dev); | |
4059 | ||
aefb4d4a RS |
4060 | if (stats_attr_valid(filter_mask, IFLA_STATS_AF_SPEC, 0)) { |
4061 | struct rtnl_af_ops *af_ops; | |
4062 | ||
4063 | /* for IFLA_STATS_AF_SPEC */ | |
4064 | size += nla_total_size(0); | |
4065 | ||
4066 | list_for_each_entry(af_ops, &rtnl_af_ops, list) { | |
4067 | if (af_ops->get_stats_af_size) { | |
4068 | size += nla_total_size( | |
4069 | af_ops->get_stats_af_size(dev)); | |
4070 | ||
4071 | /* for AF_* */ | |
4072 | size += nla_total_size(0); | |
4073 | } | |
4074 | } | |
4075 | } | |
4076 | ||
10c9ead9 RP |
4077 | return size; |
4078 | } | |
4079 | ||
c21ef3e3 DA |
4080 | static int rtnl_stats_get(struct sk_buff *skb, struct nlmsghdr *nlh, |
4081 | struct netlink_ext_ack *extack) | |
10c9ead9 RP |
4082 | { |
4083 | struct net *net = sock_net(skb->sk); | |
10c9ead9 | 4084 | struct net_device *dev = NULL; |
e8872a25 NA |
4085 | int idxattr = 0, prividx = 0; |
4086 | struct if_stats_msg *ifsm; | |
10c9ead9 RP |
4087 | struct sk_buff *nskb; |
4088 | u32 filter_mask; | |
4089 | int err; | |
4090 | ||
4775cc1f MK |
4091 | if (nlmsg_len(nlh) < sizeof(*ifsm)) |
4092 | return -EINVAL; | |
4093 | ||
10c9ead9 RP |
4094 | ifsm = nlmsg_data(nlh); |
4095 | if (ifsm->ifindex > 0) | |
4096 | dev = __dev_get_by_index(net, ifsm->ifindex); | |
4097 | else | |
4098 | return -EINVAL; | |
4099 | ||
4100 | if (!dev) | |
4101 | return -ENODEV; | |
4102 | ||
4103 | filter_mask = ifsm->filter_mask; | |
4104 | if (!filter_mask) | |
4105 | return -EINVAL; | |
4106 | ||
4107 | nskb = nlmsg_new(if_nlmsg_stats_size(dev, filter_mask), GFP_KERNEL); | |
4108 | if (!nskb) | |
4109 | return -ENOBUFS; | |
4110 | ||
4111 | err = rtnl_fill_statsinfo(nskb, dev, RTM_NEWSTATS, | |
4112 | NETLINK_CB(skb).portid, nlh->nlmsg_seq, 0, | |
e8872a25 | 4113 | 0, filter_mask, &idxattr, &prividx); |
10c9ead9 RP |
4114 | if (err < 0) { |
4115 | /* -EMSGSIZE implies BUG in if_nlmsg_stats_size */ | |
4116 | WARN_ON(err == -EMSGSIZE); | |
4117 | kfree_skb(nskb); | |
4118 | } else { | |
4119 | err = rtnl_unicast(nskb, net, NETLINK_CB(skb).portid); | |
4120 | } | |
4121 | ||
4122 | return err; | |
4123 | } | |
4124 | ||
4125 | static int rtnl_stats_dump(struct sk_buff *skb, struct netlink_callback *cb) | |
4126 | { | |
e8872a25 | 4127 | int h, s_h, err, s_idx, s_idxattr, s_prividx; |
10c9ead9 | 4128 | struct net *net = sock_net(skb->sk); |
e8872a25 | 4129 | unsigned int flags = NLM_F_MULTI; |
10c9ead9 | 4130 | struct if_stats_msg *ifsm; |
10c9ead9 | 4131 | struct hlist_head *head; |
e8872a25 | 4132 | struct net_device *dev; |
10c9ead9 | 4133 | u32 filter_mask = 0; |
e8872a25 | 4134 | int idx = 0; |
10c9ead9 RP |
4135 | |
4136 | s_h = cb->args[0]; | |
4137 | s_idx = cb->args[1]; | |
e8872a25 NA |
4138 | s_idxattr = cb->args[2]; |
4139 | s_prividx = cb->args[3]; | |
10c9ead9 RP |
4140 | |
4141 | cb->seq = net->dev_base_seq; | |
4142 | ||
4775cc1f MK |
4143 | if (nlmsg_len(cb->nlh) < sizeof(*ifsm)) |
4144 | return -EINVAL; | |
4145 | ||
10c9ead9 RP |
4146 | ifsm = nlmsg_data(cb->nlh); |
4147 | filter_mask = ifsm->filter_mask; | |
4148 | if (!filter_mask) | |
4149 | return -EINVAL; | |
4150 | ||
4151 | for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) { | |
4152 | idx = 0; | |
4153 | head = &net->dev_index_head[h]; | |
4154 | hlist_for_each_entry(dev, head, index_hlist) { | |
4155 | if (idx < s_idx) | |
4156 | goto cont; | |
4157 | err = rtnl_fill_statsinfo(skb, dev, RTM_NEWSTATS, | |
4158 | NETLINK_CB(cb->skb).portid, | |
4159 | cb->nlh->nlmsg_seq, 0, | |
e8872a25 NA |
4160 | flags, filter_mask, |
4161 | &s_idxattr, &s_prividx); | |
10c9ead9 RP |
4162 | /* If we ran out of room on the first message, |
4163 | * we're in trouble | |
4164 | */ | |
4165 | WARN_ON((err == -EMSGSIZE) && (skb->len == 0)); | |
4166 | ||
4167 | if (err < 0) | |
4168 | goto out; | |
e8872a25 NA |
4169 | s_prividx = 0; |
4170 | s_idxattr = 0; | |
10c9ead9 RP |
4171 | nl_dump_check_consistent(cb, nlmsg_hdr(skb)); |
4172 | cont: | |
4173 | idx++; | |
4174 | } | |
4175 | } | |
4176 | out: | |
e8872a25 NA |
4177 | cb->args[3] = s_prividx; |
4178 | cb->args[2] = s_idxattr; | |
10c9ead9 RP |
4179 | cb->args[1] = idx; |
4180 | cb->args[0] = h; | |
4181 | ||
4182 | return skb->len; | |
4183 | } | |
4184 | ||
1da177e4 LT |
4185 | /* Process one rtnetlink message. */ |
4186 | ||
2d4bc933 JB |
4187 | static int rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, |
4188 | struct netlink_ext_ack *extack) | |
1da177e4 | 4189 | { |
3b1e0a65 | 4190 | struct net *net = sock_net(skb->sk); |
6853dd48 FW |
4191 | struct rtnl_link *handlers; |
4192 | int err = -EOPNOTSUPP; | |
e2849863 | 4193 | rtnl_doit_func doit; |
62256f98 | 4194 | unsigned int flags; |
617cfc75 | 4195 | int kind; |
1da177e4 LT |
4196 | int family; |
4197 | int type; | |
1da177e4 | 4198 | |
1da177e4 | 4199 | type = nlh->nlmsg_type; |
1da177e4 | 4200 | if (type > RTM_MAX) |
038890fe | 4201 | return -EOPNOTSUPP; |
1da177e4 LT |
4202 | |
4203 | type -= RTM_BASE; | |
4204 | ||
4205 | /* All the messages must have at least 1 byte length */ | |
573ce260 | 4206 | if (nlmsg_len(nlh) < sizeof(struct rtgenmsg)) |
1da177e4 LT |
4207 | return 0; |
4208 | ||
573ce260 | 4209 | family = ((struct rtgenmsg *)nlmsg_data(nlh))->rtgen_family; |
1da177e4 LT |
4210 | kind = type&3; |
4211 | ||
90f62cf3 | 4212 | if (kind != 2 && !netlink_net_capable(skb, CAP_NET_ADMIN)) |
1d00a4eb | 4213 | return -EPERM; |
1da177e4 | 4214 | |
5c2bb9b6 | 4215 | if (family >= ARRAY_SIZE(rtnl_msg_handlers)) |
6853dd48 FW |
4216 | family = PF_UNSPEC; |
4217 | ||
4218 | rcu_read_lock(); | |
4219 | handlers = rcu_dereference(rtnl_msg_handlers[family]); | |
4220 | if (!handlers) { | |
4221 | family = PF_UNSPEC; | |
4222 | handlers = rcu_dereference(rtnl_msg_handlers[family]); | |
4223 | } | |
4224 | ||
b8f3ab42 | 4225 | if (kind == 2 && nlh->nlmsg_flags&NLM_F_DUMP) { |
97c53cac | 4226 | struct sock *rtnl; |
e2849863 | 4227 | rtnl_dumpit_func dumpit; |
c7ac8679 | 4228 | u16 min_dump_alloc = 0; |
1da177e4 | 4229 | |
6853dd48 FW |
4230 | dumpit = READ_ONCE(handlers[type].dumpit); |
4231 | if (!dumpit) { | |
4232 | family = PF_UNSPEC; | |
4233 | handlers = rcu_dereference(rtnl_msg_handlers[PF_UNSPEC]); | |
4234 | if (!handlers) | |
4235 | goto err_unlock; | |
0cc09020 | 4236 | |
6853dd48 FW |
4237 | dumpit = READ_ONCE(handlers[type].dumpit); |
4238 | if (!dumpit) | |
4239 | goto err_unlock; | |
4240 | } | |
e1fa6d21 | 4241 | |
019a3169 FW |
4242 | refcount_inc(&rtnl_msg_handlers_ref[family]); |
4243 | ||
5c2bb9b6 | 4244 | if (type == RTM_GETLINK - RTM_BASE) |
e1fa6d21 | 4245 | min_dump_alloc = rtnl_calcit(skb, nlh); |
9ac4a169 | 4246 | |
6853dd48 FW |
4247 | rcu_read_unlock(); |
4248 | ||
97c53cac | 4249 | rtnl = net->rtnl; |
80d326fa PNA |
4250 | { |
4251 | struct netlink_dump_control c = { | |
4252 | .dump = dumpit, | |
4253 | .min_dump_alloc = min_dump_alloc, | |
4254 | }; | |
4255 | err = netlink_dump_start(rtnl, skb, nlh, &c); | |
4256 | } | |
019a3169 | 4257 | refcount_dec(&rtnl_msg_handlers_ref[family]); |
2907c35f | 4258 | return err; |
1da177e4 LT |
4259 | } |
4260 | ||
8caa38b5 FW |
4261 | doit = READ_ONCE(handlers[type].doit); |
4262 | if (!doit) { | |
4263 | family = PF_UNSPEC; | |
4264 | handlers = rcu_dereference(rtnl_msg_handlers[family]); | |
4265 | } | |
4266 | ||
62256f98 FW |
4267 | flags = READ_ONCE(handlers[type].flags); |
4268 | if (flags & RTNL_FLAG_DOIT_UNLOCKED) { | |
4269 | refcount_inc(&rtnl_msg_handlers_ref[family]); | |
4270 | doit = READ_ONCE(handlers[type].doit); | |
4271 | rcu_read_unlock(); | |
4272 | if (doit) | |
4273 | err = doit(skb, nlh, extack); | |
4274 | refcount_dec(&rtnl_msg_handlers_ref[family]); | |
4275 | return err; | |
4276 | } | |
4277 | ||
6853dd48 | 4278 | rcu_read_unlock(); |
1da177e4 | 4279 | |
6853dd48 FW |
4280 | rtnl_lock(); |
4281 | handlers = rtnl_dereference(rtnl_msg_handlers[family]); | |
4282 | if (handlers) { | |
4283 | doit = READ_ONCE(handlers[type].doit); | |
4284 | if (doit) | |
4285 | err = doit(skb, nlh, extack); | |
4286 | } | |
0cc09020 | 4287 | rtnl_unlock(); |
0cc09020 FW |
4288 | return err; |
4289 | ||
4290 | err_unlock: | |
6853dd48 | 4291 | rcu_read_unlock(); |
0cc09020 | 4292 | return -EOPNOTSUPP; |
1da177e4 LT |
4293 | } |
4294 | ||
cd40b7d3 | 4295 | static void rtnetlink_rcv(struct sk_buff *skb) |
1da177e4 | 4296 | { |
cd40b7d3 | 4297 | netlink_rcv_skb(skb, &rtnetlink_rcv_msg); |
1da177e4 LT |
4298 | } |
4299 | ||
5f729eaa JG |
4300 | static int rtnetlink_bind(struct net *net, int group) |
4301 | { | |
4302 | switch (group) { | |
4303 | case RTNLGRP_IPV4_MROUTE_R: | |
4304 | case RTNLGRP_IPV6_MROUTE_R: | |
4305 | if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) | |
4306 | return -EPERM; | |
4307 | break; | |
4308 | } | |
4309 | return 0; | |
4310 | } | |
4311 | ||
1da177e4 LT |
4312 | static int rtnetlink_event(struct notifier_block *this, unsigned long event, void *ptr) |
4313 | { | |
351638e7 | 4314 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
e9dc8653 | 4315 | |
1da177e4 | 4316 | switch (event) { |
5138e86f | 4317 | case NETDEV_REBOOT: |
8a212589 | 4318 | case NETDEV_CHANGEMTU: |
3753654e | 4319 | case NETDEV_CHANGEADDR: |
5138e86f VY |
4320 | case NETDEV_CHANGENAME: |
4321 | case NETDEV_FEAT_CHANGE: | |
4322 | case NETDEV_BONDING_FAILOVER: | |
e6e66594 | 4323 | case NETDEV_POST_TYPE_CHANGE: |
5138e86f | 4324 | case NETDEV_NOTIFY_PEERS: |
dc709f37 | 4325 | case NETDEV_CHANGEUPPER: |
5138e86f | 4326 | case NETDEV_RESEND_IGMP: |
5138e86f | 4327 | case NETDEV_CHANGEINFODATA: |
ebdcf045 | 4328 | case NETDEV_CHANGE_TX_QUEUE_LEN: |
3d3ea5af VY |
4329 | rtmsg_ifinfo_event(RTM_NEWLINK, dev, 0, rtnl_get_event(event), |
4330 | GFP_KERNEL); | |
1da177e4 LT |
4331 | break; |
4332 | default: | |
1da177e4 LT |
4333 | break; |
4334 | } | |
4335 | return NOTIFY_DONE; | |
4336 | } | |
4337 | ||
4338 | static struct notifier_block rtnetlink_dev_notifier = { | |
4339 | .notifier_call = rtnetlink_event, | |
4340 | }; | |
4341 | ||
97c53cac | 4342 | |
2c8c1e72 | 4343 | static int __net_init rtnetlink_net_init(struct net *net) |
97c53cac DL |
4344 | { |
4345 | struct sock *sk; | |
a31f2d17 PNA |
4346 | struct netlink_kernel_cfg cfg = { |
4347 | .groups = RTNLGRP_MAX, | |
4348 | .input = rtnetlink_rcv, | |
4349 | .cb_mutex = &rtnl_mutex, | |
9785e10a | 4350 | .flags = NL_CFG_F_NONROOT_RECV, |
5f729eaa | 4351 | .bind = rtnetlink_bind, |
a31f2d17 PNA |
4352 | }; |
4353 | ||
9f00d977 | 4354 | sk = netlink_kernel_create(net, NETLINK_ROUTE, &cfg); |
97c53cac DL |
4355 | if (!sk) |
4356 | return -ENOMEM; | |
97c53cac DL |
4357 | net->rtnl = sk; |
4358 | return 0; | |
4359 | } | |
4360 | ||
2c8c1e72 | 4361 | static void __net_exit rtnetlink_net_exit(struct net *net) |
97c53cac | 4362 | { |
775516bf DL |
4363 | netlink_kernel_release(net->rtnl); |
4364 | net->rtnl = NULL; | |
97c53cac DL |
4365 | } |
4366 | ||
4367 | static struct pernet_operations rtnetlink_net_ops = { | |
4368 | .init = rtnetlink_net_init, | |
4369 | .exit = rtnetlink_net_exit, | |
4370 | }; | |
4371 | ||
1da177e4 LT |
4372 | void __init rtnetlink_init(void) |
4373 | { | |
d38a6512 FW |
4374 | int i; |
4375 | ||
4376 | for (i = 0; i < ARRAY_SIZE(rtnl_msg_handlers_ref); i++) | |
4377 | refcount_set(&rtnl_msg_handlers_ref[i], 1); | |
4378 | ||
97c53cac | 4379 | if (register_pernet_subsys(&rtnetlink_net_ops)) |
1da177e4 | 4380 | panic("rtnetlink_init: cannot initialize rtnetlink\n"); |
97c53cac | 4381 | |
1da177e4 | 4382 | register_netdevice_notifier(&rtnetlink_dev_notifier); |
340d17fc | 4383 | |
c7ac8679 | 4384 | rtnl_register(PF_UNSPEC, RTM_GETLINK, rtnl_getlink, |
b97bac64 FW |
4385 | rtnl_dump_ifinfo, 0); |
4386 | rtnl_register(PF_UNSPEC, RTM_SETLINK, rtnl_setlink, NULL, 0); | |
4387 | rtnl_register(PF_UNSPEC, RTM_NEWLINK, rtnl_newlink, NULL, 0); | |
4388 | rtnl_register(PF_UNSPEC, RTM_DELLINK, rtnl_dellink, NULL, 0); | |
687ad8cc | 4389 | |
b97bac64 FW |
4390 | rtnl_register(PF_UNSPEC, RTM_GETADDR, NULL, rtnl_dump_all, 0); |
4391 | rtnl_register(PF_UNSPEC, RTM_GETROUTE, NULL, rtnl_dump_all, 0); | |
4392 | rtnl_register(PF_UNSPEC, RTM_GETNETCONF, NULL, rtnl_dump_all, 0); | |
77162022 | 4393 | |
b97bac64 FW |
4394 | rtnl_register(PF_BRIDGE, RTM_NEWNEIGH, rtnl_fdb_add, NULL, 0); |
4395 | rtnl_register(PF_BRIDGE, RTM_DELNEIGH, rtnl_fdb_del, NULL, 0); | |
4396 | rtnl_register(PF_BRIDGE, RTM_GETNEIGH, NULL, rtnl_fdb_dump, 0); | |
e5a55a89 | 4397 | |
b97bac64 FW |
4398 | rtnl_register(PF_BRIDGE, RTM_GETLINK, NULL, rtnl_bridge_getlink, 0); |
4399 | rtnl_register(PF_BRIDGE, RTM_DELLINK, rtnl_bridge_dellink, NULL, 0); | |
4400 | rtnl_register(PF_BRIDGE, RTM_SETLINK, rtnl_bridge_setlink, NULL, 0); | |
10c9ead9 RP |
4401 | |
4402 | rtnl_register(PF_UNSPEC, RTM_GETSTATS, rtnl_stats_get, rtnl_stats_dump, | |
b97bac64 | 4403 | 0); |
1da177e4 | 4404 | } |