Commit | Line | Data |
---|---|---|
2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 LT |
2 | /* |
3 | * INET An implementation of the TCP/IP protocol suite for the LINUX | |
4 | * operating system. INET is implemented using the BSD Socket | |
5 | * interface as the means of communication with the user level. | |
6 | * | |
7 | * Routing netlink socket interface: protocol independent part. | |
8 | * | |
9 | * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru> | |
10 | * | |
1da177e4 LT |
11 | * Fixes: |
12 | * Vitaly E. Lavrov RTA_OK arithmetics was wrong. | |
13 | */ | |
14 | ||
ee5d032f | 15 | #include <linux/bitops.h> |
1da177e4 LT |
16 | #include <linux/errno.h> |
17 | #include <linux/module.h> | |
18 | #include <linux/types.h> | |
19 | #include <linux/socket.h> | |
20 | #include <linux/kernel.h> | |
1da177e4 LT |
21 | #include <linux/timer.h> |
22 | #include <linux/string.h> | |
23 | #include <linux/sockios.h> | |
24 | #include <linux/net.h> | |
25 | #include <linux/fcntl.h> | |
26 | #include <linux/mm.h> | |
27 | #include <linux/slab.h> | |
28 | #include <linux/interrupt.h> | |
29 | #include <linux/capability.h> | |
30 | #include <linux/skbuff.h> | |
31 | #include <linux/init.h> | |
32 | #include <linux/security.h> | |
6756ae4b | 33 | #include <linux/mutex.h> |
1823730f | 34 | #include <linux/if_addr.h> |
77162022 | 35 | #include <linux/if_bridge.h> |
f6f6424b | 36 | #include <linux/if_vlan.h> |
ebc08a6f | 37 | #include <linux/pci.h> |
77162022 | 38 | #include <linux/etherdevice.h> |
58038695 | 39 | #include <linux/bpf.h> |
1da177e4 | 40 | |
7c0f6ba6 | 41 | #include <linux/uaccess.h> |
1da177e4 LT |
42 | |
43 | #include <linux/inet.h> | |
44 | #include <linux/netdevice.h> | |
45 | #include <net/ip.h> | |
46 | #include <net/protocol.h> | |
47 | #include <net/arp.h> | |
48 | #include <net/route.h> | |
49 | #include <net/udp.h> | |
ea697639 | 50 | #include <net/tcp.h> |
1da177e4 LT |
51 | #include <net/sock.h> |
52 | #include <net/pkt_sched.h> | |
14c0b97d | 53 | #include <net/fib_rules.h> |
e2849863 | 54 | #include <net/rtnetlink.h> |
30ffee84 | 55 | #include <net/net_namespace.h> |
1da177e4 | 56 | |
a428afe8 | 57 | #define RTNL_MAX_TYPE 50 |
2dba407f | 58 | #define RTNL_SLAVE_MAX_TYPE 40 |
ccf8dbcd | 59 | |
e0d087af | 60 | struct rtnl_link { |
e2849863 TG |
61 | rtnl_doit_func doit; |
62 | rtnl_dumpit_func dumpit; | |
e4202511 | 63 | struct module *owner; |
62256f98 | 64 | unsigned int flags; |
addf9b90 | 65 | struct rcu_head rcu; |
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 | |
79ffdfc6 KT |
76 | int rtnl_lock_killable(void) |
77 | { | |
78 | return mutex_lock_killable(&rtnl_mutex); | |
79 | } | |
80 | EXPORT_SYMBOL(rtnl_lock_killable); | |
81 | ||
1b5c5493 ED |
82 | static struct sk_buff *defer_kfree_skb_list; |
83 | void rtnl_kfree_skbs(struct sk_buff *head, struct sk_buff *tail) | |
84 | { | |
85 | if (head && tail) { | |
86 | tail->next = defer_kfree_skb_list; | |
87 | defer_kfree_skb_list = head; | |
88 | } | |
89 | } | |
90 | EXPORT_SYMBOL(rtnl_kfree_skbs); | |
91 | ||
6756ae4b | 92 | void __rtnl_unlock(void) |
1da177e4 | 93 | { |
1b5c5493 ED |
94 | struct sk_buff *head = defer_kfree_skb_list; |
95 | ||
96 | defer_kfree_skb_list = NULL; | |
97 | ||
6756ae4b | 98 | mutex_unlock(&rtnl_mutex); |
1b5c5493 ED |
99 | |
100 | while (head) { | |
101 | struct sk_buff *next = head->next; | |
102 | ||
103 | kfree_skb(head); | |
104 | cond_resched(); | |
105 | head = next; | |
106 | } | |
1da177e4 | 107 | } |
6756ae4b | 108 | |
1da177e4 LT |
109 | void rtnl_unlock(void) |
110 | { | |
58ec3b4d | 111 | /* This fellow will unlock it for us. */ |
1da177e4 LT |
112 | netdev_run_todo(); |
113 | } | |
e0d087af | 114 | EXPORT_SYMBOL(rtnl_unlock); |
1da177e4 | 115 | |
6756ae4b SH |
116 | int rtnl_trylock(void) |
117 | { | |
118 | return mutex_trylock(&rtnl_mutex); | |
119 | } | |
e0d087af | 120 | EXPORT_SYMBOL(rtnl_trylock); |
6756ae4b | 121 | |
c9c1014b PM |
122 | int rtnl_is_locked(void) |
123 | { | |
124 | return mutex_is_locked(&rtnl_mutex); | |
125 | } | |
e0d087af | 126 | EXPORT_SYMBOL(rtnl_is_locked); |
c9c1014b | 127 | |
6f99528e VB |
128 | bool refcount_dec_and_rtnl_lock(refcount_t *r) |
129 | { | |
130 | return refcount_dec_and_mutex_lock(r, &rtnl_mutex); | |
131 | } | |
132 | EXPORT_SYMBOL(refcount_dec_and_rtnl_lock); | |
133 | ||
a898def2 | 134 | #ifdef CONFIG_PROVE_LOCKING |
0cbf3343 | 135 | bool lockdep_rtnl_is_held(void) |
a898def2 PM |
136 | { |
137 | return lockdep_is_held(&rtnl_mutex); | |
138 | } | |
139 | EXPORT_SYMBOL(lockdep_rtnl_is_held); | |
140 | #endif /* #ifdef CONFIG_PROVE_LOCKING */ | |
141 | ||
51e13685 | 142 | static struct rtnl_link __rcu *__rcu *rtnl_msg_handlers[RTNL_FAMILY_MAX + 1]; |
e2849863 TG |
143 | |
144 | static inline int rtm_msgindex(int msgtype) | |
145 | { | |
146 | int msgindex = msgtype - RTM_BASE; | |
147 | ||
148 | /* | |
149 | * msgindex < 0 implies someone tried to register a netlink | |
150 | * control code. msgindex >= RTM_NR_MSGTYPES may indicate that | |
151 | * the message type has not been added to linux/rtnetlink.h | |
152 | */ | |
153 | BUG_ON(msgindex < 0 || msgindex >= RTM_NR_MSGTYPES); | |
154 | ||
155 | return msgindex; | |
156 | } | |
157 | ||
addf9b90 FW |
158 | static struct rtnl_link *rtnl_get_link(int protocol, int msgtype) |
159 | { | |
51e13685 | 160 | struct rtnl_link __rcu **tab; |
addf9b90 FW |
161 | |
162 | if (protocol >= ARRAY_SIZE(rtnl_msg_handlers)) | |
163 | protocol = PF_UNSPEC; | |
164 | ||
165 | tab = rcu_dereference_rtnl(rtnl_msg_handlers[protocol]); | |
166 | if (!tab) | |
167 | tab = rcu_dereference_rtnl(rtnl_msg_handlers[PF_UNSPEC]); | |
168 | ||
51e13685 | 169 | return rcu_dereference_rtnl(tab[msgtype]); |
addf9b90 FW |
170 | } |
171 | ||
e4202511 FW |
172 | static int rtnl_register_internal(struct module *owner, |
173 | int protocol, int msgtype, | |
174 | rtnl_doit_func doit, rtnl_dumpit_func dumpit, | |
175 | unsigned int flags) | |
e2849863 | 176 | { |
b0e9fe1b FW |
177 | struct rtnl_link *link, *old; |
178 | struct rtnl_link __rcu **tab; | |
e2849863 | 179 | int msgindex; |
addf9b90 | 180 | int ret = -ENOBUFS; |
e2849863 | 181 | |
25239cee | 182 | BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX); |
e2849863 TG |
183 | msgindex = rtm_msgindex(msgtype); |
184 | ||
addf9b90 | 185 | rtnl_lock(); |
51e13685 | 186 | tab = rtnl_dereference(rtnl_msg_handlers[protocol]); |
e2849863 | 187 | if (tab == NULL) { |
addf9b90 FW |
188 | tab = kcalloc(RTM_NR_MSGTYPES, sizeof(void *), GFP_KERNEL); |
189 | if (!tab) | |
190 | goto unlock; | |
e2849863 | 191 | |
addf9b90 | 192 | /* ensures we see the 0 stores */ |
6853dd48 | 193 | rcu_assign_pointer(rtnl_msg_handlers[protocol], tab); |
e2849863 TG |
194 | } |
195 | ||
addf9b90 FW |
196 | old = rtnl_dereference(tab[msgindex]); |
197 | if (old) { | |
198 | link = kmemdup(old, sizeof(*old), GFP_KERNEL); | |
199 | if (!link) | |
200 | goto unlock; | |
201 | } else { | |
202 | link = kzalloc(sizeof(*link), GFP_KERNEL); | |
203 | if (!link) | |
204 | goto unlock; | |
205 | } | |
206 | ||
e4202511 FW |
207 | WARN_ON(link->owner && link->owner != owner); |
208 | link->owner = owner; | |
209 | ||
addf9b90 | 210 | WARN_ON(doit && link->doit && link->doit != doit); |
e2849863 | 211 | if (doit) |
addf9b90 FW |
212 | link->doit = doit; |
213 | WARN_ON(dumpit && link->dumpit && link->dumpit != dumpit); | |
e2849863 | 214 | if (dumpit) |
addf9b90 | 215 | link->dumpit = dumpit; |
e2849863 | 216 | |
addf9b90 FW |
217 | link->flags |= flags; |
218 | ||
219 | /* publish protocol:msgtype */ | |
220 | rcu_assign_pointer(tab[msgindex], link); | |
221 | ret = 0; | |
222 | if (old) | |
223 | kfree_rcu(old, rcu); | |
224 | unlock: | |
225 | rtnl_unlock(); | |
226 | return ret; | |
e2849863 | 227 | } |
e4202511 FW |
228 | |
229 | /** | |
230 | * rtnl_register_module - Register a rtnetlink message type | |
231 | * | |
232 | * @owner: module registering the hook (THIS_MODULE) | |
233 | * @protocol: Protocol family or PF_UNSPEC | |
234 | * @msgtype: rtnetlink message type | |
235 | * @doit: Function pointer called for each request message | |
236 | * @dumpit: Function pointer called for each dump request (NLM_F_DUMP) message | |
237 | * @flags: rtnl_link_flags to modifiy behaviour of doit/dumpit functions | |
238 | * | |
239 | * Like rtnl_register, but for use by removable modules. | |
240 | */ | |
241 | int rtnl_register_module(struct module *owner, | |
242 | int protocol, int msgtype, | |
243 | rtnl_doit_func doit, rtnl_dumpit_func dumpit, | |
244 | unsigned int flags) | |
245 | { | |
246 | return rtnl_register_internal(owner, protocol, msgtype, | |
247 | doit, dumpit, flags); | |
248 | } | |
249 | EXPORT_SYMBOL_GPL(rtnl_register_module); | |
250 | ||
251 | /** | |
16feebcf | 252 | * rtnl_register - Register a rtnetlink message type |
e4202511 FW |
253 | * @protocol: Protocol family or PF_UNSPEC |
254 | * @msgtype: rtnetlink message type | |
255 | * @doit: Function pointer called for each request message | |
256 | * @dumpit: Function pointer called for each dump request (NLM_F_DUMP) message | |
257 | * @flags: rtnl_link_flags to modifiy behaviour of doit/dumpit functions | |
258 | * | |
259 | * Registers the specified function pointers (at least one of them has | |
260 | * to be non-NULL) to be called whenever a request message for the | |
261 | * specified protocol family and message type is received. | |
262 | * | |
263 | * The special protocol family PF_UNSPEC may be used to define fallback | |
264 | * function pointers for the case when no entry for the specific protocol | |
265 | * family exists. | |
e2849863 TG |
266 | */ |
267 | void rtnl_register(int protocol, int msgtype, | |
c7ac8679 | 268 | rtnl_doit_func doit, rtnl_dumpit_func dumpit, |
b97bac64 | 269 | unsigned int flags) |
e2849863 | 270 | { |
16feebcf FW |
271 | int err; |
272 | ||
273 | err = rtnl_register_internal(NULL, protocol, msgtype, doit, dumpit, | |
274 | flags); | |
275 | if (err) | |
276 | pr_err("Unable to register rtnetlink message handler, " | |
277 | "protocol = %d, message type = %d\n", protocol, msgtype); | |
e2849863 | 278 | } |
e2849863 TG |
279 | |
280 | /** | |
281 | * rtnl_unregister - Unregister a rtnetlink message type | |
282 | * @protocol: Protocol family or PF_UNSPEC | |
283 | * @msgtype: rtnetlink message type | |
284 | * | |
285 | * Returns 0 on success or a negative error code. | |
286 | */ | |
287 | int rtnl_unregister(int protocol, int msgtype) | |
288 | { | |
51e13685 JK |
289 | struct rtnl_link __rcu **tab; |
290 | struct rtnl_link *link; | |
e2849863 TG |
291 | int msgindex; |
292 | ||
25239cee | 293 | BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX); |
e2849863 TG |
294 | msgindex = rtm_msgindex(msgtype); |
295 | ||
6853dd48 | 296 | rtnl_lock(); |
addf9b90 FW |
297 | tab = rtnl_dereference(rtnl_msg_handlers[protocol]); |
298 | if (!tab) { | |
6853dd48 | 299 | rtnl_unlock(); |
e2849863 | 300 | return -ENOENT; |
6853dd48 | 301 | } |
e2849863 | 302 | |
51e13685 | 303 | link = rtnl_dereference(tab[msgindex]); |
addf9b90 | 304 | rcu_assign_pointer(tab[msgindex], NULL); |
6853dd48 | 305 | rtnl_unlock(); |
e2849863 | 306 | |
addf9b90 FW |
307 | kfree_rcu(link, rcu); |
308 | ||
e2849863 TG |
309 | return 0; |
310 | } | |
e2849863 TG |
311 | EXPORT_SYMBOL_GPL(rtnl_unregister); |
312 | ||
313 | /** | |
314 | * rtnl_unregister_all - Unregister all rtnetlink message type of a protocol | |
315 | * @protocol : Protocol family or PF_UNSPEC | |
316 | * | |
317 | * Identical to calling rtnl_unregster() for all registered message types | |
318 | * of a certain protocol family. | |
319 | */ | |
320 | void rtnl_unregister_all(int protocol) | |
321 | { | |
51e13685 JK |
322 | struct rtnl_link __rcu **tab; |
323 | struct rtnl_link *link; | |
addf9b90 | 324 | int msgindex; |
019a3169 | 325 | |
25239cee | 326 | BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX); |
e2849863 | 327 | |
019a3169 | 328 | rtnl_lock(); |
51e13685 | 329 | tab = rtnl_dereference(rtnl_msg_handlers[protocol]); |
f707ef61 SD |
330 | if (!tab) { |
331 | rtnl_unlock(); | |
332 | return; | |
333 | } | |
6853dd48 | 334 | RCU_INIT_POINTER(rtnl_msg_handlers[protocol], NULL); |
addf9b90 | 335 | for (msgindex = 0; msgindex < RTM_NR_MSGTYPES; msgindex++) { |
51e13685 | 336 | link = rtnl_dereference(tab[msgindex]); |
addf9b90 FW |
337 | if (!link) |
338 | continue; | |
339 | ||
340 | rcu_assign_pointer(tab[msgindex], NULL); | |
341 | kfree_rcu(link, rcu); | |
342 | } | |
019a3169 FW |
343 | rtnl_unlock(); |
344 | ||
6853dd48 FW |
345 | synchronize_net(); |
346 | ||
addf9b90 | 347 | kfree(tab); |
e2849863 | 348 | } |
e2849863 | 349 | EXPORT_SYMBOL_GPL(rtnl_unregister_all); |
1da177e4 | 350 | |
38f7b870 PM |
351 | static LIST_HEAD(link_ops); |
352 | ||
c63044f0 ED |
353 | static const struct rtnl_link_ops *rtnl_link_ops_get(const char *kind) |
354 | { | |
355 | const struct rtnl_link_ops *ops; | |
356 | ||
357 | list_for_each_entry(ops, &link_ops, list) { | |
358 | if (!strcmp(ops->kind, kind)) | |
359 | return ops; | |
360 | } | |
361 | return NULL; | |
362 | } | |
363 | ||
38f7b870 PM |
364 | /** |
365 | * __rtnl_link_register - Register rtnl_link_ops with rtnetlink. | |
366 | * @ops: struct rtnl_link_ops * to register | |
367 | * | |
368 | * The caller must hold the rtnl_mutex. This function should be used | |
369 | * by drivers that create devices during module initialization. It | |
370 | * must be called before registering the devices. | |
371 | * | |
372 | * Returns 0 on success or a negative error code. | |
373 | */ | |
374 | int __rtnl_link_register(struct rtnl_link_ops *ops) | |
375 | { | |
c63044f0 ED |
376 | if (rtnl_link_ops_get(ops->kind)) |
377 | return -EEXIST; | |
378 | ||
b0ab2fab JP |
379 | /* The check for setup is here because if ops |
380 | * does not have that filled up, it is not possible | |
381 | * to use the ops for creating device. So do not | |
382 | * fill up dellink as well. That disables rtnl_dellink. | |
383 | */ | |
384 | if (ops->setup && !ops->dellink) | |
23289a37 | 385 | ops->dellink = unregister_netdevice_queue; |
2d85cba2 | 386 | |
38f7b870 PM |
387 | list_add_tail(&ops->list, &link_ops); |
388 | return 0; | |
389 | } | |
38f7b870 PM |
390 | EXPORT_SYMBOL_GPL(__rtnl_link_register); |
391 | ||
392 | /** | |
393 | * rtnl_link_register - Register rtnl_link_ops with rtnetlink. | |
394 | * @ops: struct rtnl_link_ops * to register | |
395 | * | |
396 | * Returns 0 on success or a negative error code. | |
397 | */ | |
398 | int rtnl_link_register(struct rtnl_link_ops *ops) | |
399 | { | |
400 | int err; | |
401 | ||
ccf8dbcd KC |
402 | /* Sanity-check max sizes to avoid stack buffer overflow. */ |
403 | if (WARN_ON(ops->maxtype > RTNL_MAX_TYPE || | |
404 | ops->slave_maxtype > RTNL_SLAVE_MAX_TYPE)) | |
405 | return -EINVAL; | |
406 | ||
38f7b870 PM |
407 | rtnl_lock(); |
408 | err = __rtnl_link_register(ops); | |
409 | rtnl_unlock(); | |
410 | return err; | |
411 | } | |
38f7b870 PM |
412 | EXPORT_SYMBOL_GPL(rtnl_link_register); |
413 | ||
669f87ba PE |
414 | static void __rtnl_kill_links(struct net *net, struct rtnl_link_ops *ops) |
415 | { | |
416 | struct net_device *dev; | |
23289a37 ED |
417 | LIST_HEAD(list_kill); |
418 | ||
669f87ba | 419 | for_each_netdev(net, dev) { |
23289a37 ED |
420 | if (dev->rtnl_link_ops == ops) |
421 | ops->dellink(dev, &list_kill); | |
669f87ba | 422 | } |
23289a37 | 423 | unregister_netdevice_many(&list_kill); |
669f87ba PE |
424 | } |
425 | ||
38f7b870 PM |
426 | /** |
427 | * __rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink. | |
428 | * @ops: struct rtnl_link_ops * to unregister | |
429 | * | |
554873e5 KT |
430 | * The caller must hold the rtnl_mutex and guarantee net_namespace_list |
431 | * integrity (hold pernet_ops_rwsem for writing to close the race | |
432 | * with setup_net() and cleanup_net()). | |
38f7b870 PM |
433 | */ |
434 | void __rtnl_link_unregister(struct rtnl_link_ops *ops) | |
435 | { | |
881d966b | 436 | struct net *net; |
2d85cba2 | 437 | |
881d966b | 438 | for_each_net(net) { |
669f87ba | 439 | __rtnl_kill_links(net, ops); |
2d85cba2 | 440 | } |
38f7b870 PM |
441 | list_del(&ops->list); |
442 | } | |
38f7b870 PM |
443 | EXPORT_SYMBOL_GPL(__rtnl_link_unregister); |
444 | ||
200b916f CW |
445 | /* Return with the rtnl_lock held when there are no network |
446 | * devices unregistering in any network namespace. | |
447 | */ | |
448 | static void rtnl_lock_unregistering_all(void) | |
449 | { | |
450 | struct net *net; | |
451 | bool unregistering; | |
ff960a73 | 452 | DEFINE_WAIT_FUNC(wait, woken_wake_function); |
200b916f | 453 | |
ff960a73 | 454 | add_wait_queue(&netdev_unregistering_wq, &wait); |
200b916f | 455 | for (;;) { |
200b916f CW |
456 | unregistering = false; |
457 | rtnl_lock(); | |
f0b07bb1 KT |
458 | /* We held write locked pernet_ops_rwsem, and parallel |
459 | * setup_net() and cleanup_net() are not possible. | |
460 | */ | |
200b916f CW |
461 | for_each_net(net) { |
462 | if (net->dev_unreg_count > 0) { | |
463 | unregistering = true; | |
464 | break; | |
465 | } | |
466 | } | |
467 | if (!unregistering) | |
468 | break; | |
469 | __rtnl_unlock(); | |
ff960a73 PZ |
470 | |
471 | wait_woken(&wait, TASK_UNINTERRUPTIBLE, MAX_SCHEDULE_TIMEOUT); | |
200b916f | 472 | } |
ff960a73 | 473 | remove_wait_queue(&netdev_unregistering_wq, &wait); |
200b916f CW |
474 | } |
475 | ||
38f7b870 PM |
476 | /** |
477 | * rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink. | |
478 | * @ops: struct rtnl_link_ops * to unregister | |
479 | */ | |
480 | void rtnl_link_unregister(struct rtnl_link_ops *ops) | |
481 | { | |
8518e9bb | 482 | /* Close the race with setup_net() and cleanup_net() */ |
4420bf21 | 483 | down_write(&pernet_ops_rwsem); |
200b916f | 484 | rtnl_lock_unregistering_all(); |
38f7b870 PM |
485 | __rtnl_link_unregister(ops); |
486 | rtnl_unlock(); | |
4420bf21 | 487 | up_write(&pernet_ops_rwsem); |
38f7b870 | 488 | } |
38f7b870 PM |
489 | EXPORT_SYMBOL_GPL(rtnl_link_unregister); |
490 | ||
ba7d49b1 JP |
491 | static size_t rtnl_link_get_slave_info_data_size(const struct net_device *dev) |
492 | { | |
493 | struct net_device *master_dev; | |
494 | const struct rtnl_link_ops *ops; | |
8515ae38 | 495 | size_t size = 0; |
ba7d49b1 | 496 | |
8515ae38 FW |
497 | rcu_read_lock(); |
498 | ||
499 | master_dev = netdev_master_upper_dev_get_rcu((struct net_device *)dev); | |
ba7d49b1 | 500 | if (!master_dev) |
8515ae38 FW |
501 | goto out; |
502 | ||
ba7d49b1 | 503 | ops = master_dev->rtnl_link_ops; |
6049f253 | 504 | if (!ops || !ops->get_slave_size) |
8515ae38 | 505 | goto out; |
ba7d49b1 | 506 | /* IFLA_INFO_SLAVE_DATA + nested data */ |
8515ae38 | 507 | size = nla_total_size(sizeof(struct nlattr)) + |
ba7d49b1 | 508 | ops->get_slave_size(master_dev, dev); |
8515ae38 FW |
509 | |
510 | out: | |
511 | rcu_read_unlock(); | |
512 | return size; | |
ba7d49b1 JP |
513 | } |
514 | ||
38f7b870 PM |
515 | static size_t rtnl_link_get_size(const struct net_device *dev) |
516 | { | |
517 | const struct rtnl_link_ops *ops = dev->rtnl_link_ops; | |
518 | size_t size; | |
519 | ||
520 | if (!ops) | |
521 | return 0; | |
522 | ||
369cf77a TG |
523 | size = nla_total_size(sizeof(struct nlattr)) + /* IFLA_LINKINFO */ |
524 | nla_total_size(strlen(ops->kind) + 1); /* IFLA_INFO_KIND */ | |
38f7b870 PM |
525 | |
526 | if (ops->get_size) | |
527 | /* IFLA_INFO_DATA + nested data */ | |
369cf77a | 528 | size += nla_total_size(sizeof(struct nlattr)) + |
38f7b870 PM |
529 | ops->get_size(dev); |
530 | ||
531 | if (ops->get_xstats_size) | |
369cf77a TG |
532 | /* IFLA_INFO_XSTATS */ |
533 | size += nla_total_size(ops->get_xstats_size(dev)); | |
38f7b870 | 534 | |
ba7d49b1 JP |
535 | size += rtnl_link_get_slave_info_data_size(dev); |
536 | ||
38f7b870 PM |
537 | return size; |
538 | } | |
539 | ||
f8ff182c TG |
540 | static LIST_HEAD(rtnl_af_ops); |
541 | ||
542 | static const struct rtnl_af_ops *rtnl_af_lookup(const int family) | |
543 | { | |
544 | const struct rtnl_af_ops *ops; | |
545 | ||
5fa85a09 | 546 | list_for_each_entry_rcu(ops, &rtnl_af_ops, list) { |
f8ff182c TG |
547 | if (ops->family == family) |
548 | return ops; | |
549 | } | |
550 | ||
551 | return NULL; | |
552 | } | |
553 | ||
f8ff182c TG |
554 | /** |
555 | * rtnl_af_register - Register rtnl_af_ops with rtnetlink. | |
556 | * @ops: struct rtnl_af_ops * to register | |
557 | * | |
558 | * Returns 0 on success or a negative error code. | |
559 | */ | |
3678a9d8 | 560 | void rtnl_af_register(struct rtnl_af_ops *ops) |
f8ff182c | 561 | { |
f8ff182c | 562 | rtnl_lock(); |
5fa85a09 | 563 | list_add_tail_rcu(&ops->list, &rtnl_af_ops); |
f8ff182c | 564 | rtnl_unlock(); |
f8ff182c TG |
565 | } |
566 | EXPORT_SYMBOL_GPL(rtnl_af_register); | |
567 | ||
f8ff182c TG |
568 | /** |
569 | * rtnl_af_unregister - Unregister rtnl_af_ops from rtnetlink. | |
570 | * @ops: struct rtnl_af_ops * to unregister | |
571 | */ | |
572 | void rtnl_af_unregister(struct rtnl_af_ops *ops) | |
573 | { | |
574 | rtnl_lock(); | |
5fa85a09 | 575 | list_del_rcu(&ops->list); |
f8ff182c | 576 | rtnl_unlock(); |
5fa85a09 FW |
577 | |
578 | synchronize_rcu(); | |
f8ff182c TG |
579 | } |
580 | EXPORT_SYMBOL_GPL(rtnl_af_unregister); | |
581 | ||
b1974ed0 AR |
582 | static size_t rtnl_link_get_af_size(const struct net_device *dev, |
583 | u32 ext_filter_mask) | |
f8ff182c TG |
584 | { |
585 | struct rtnl_af_ops *af_ops; | |
586 | size_t size; | |
587 | ||
588 | /* IFLA_AF_SPEC */ | |
589 | size = nla_total_size(sizeof(struct nlattr)); | |
590 | ||
5fa85a09 FW |
591 | rcu_read_lock(); |
592 | list_for_each_entry_rcu(af_ops, &rtnl_af_ops, list) { | |
f8ff182c TG |
593 | if (af_ops->get_link_af_size) { |
594 | /* AF_* + nested data */ | |
595 | size += nla_total_size(sizeof(struct nlattr)) + | |
b1974ed0 | 596 | af_ops->get_link_af_size(dev, ext_filter_mask); |
f8ff182c TG |
597 | } |
598 | } | |
5fa85a09 | 599 | rcu_read_unlock(); |
f8ff182c TG |
600 | |
601 | return size; | |
602 | } | |
603 | ||
ba7d49b1 | 604 | static bool rtnl_have_link_slave_info(const struct net_device *dev) |
38f7b870 | 605 | { |
ba7d49b1 | 606 | struct net_device *master_dev; |
4c82a95e | 607 | bool ret = false; |
38f7b870 | 608 | |
4c82a95e FW |
609 | rcu_read_lock(); |
610 | ||
611 | master_dev = netdev_master_upper_dev_get_rcu((struct net_device *)dev); | |
813f020c | 612 | if (master_dev && master_dev->rtnl_link_ops) |
4c82a95e FW |
613 | ret = true; |
614 | rcu_read_unlock(); | |
615 | return ret; | |
ba7d49b1 JP |
616 | } |
617 | ||
618 | static int rtnl_link_slave_info_fill(struct sk_buff *skb, | |
619 | const struct net_device *dev) | |
620 | { | |
621 | struct net_device *master_dev; | |
622 | const struct rtnl_link_ops *ops; | |
623 | struct nlattr *slave_data; | |
624 | int err; | |
38f7b870 | 625 | |
ba7d49b1 JP |
626 | master_dev = netdev_master_upper_dev_get((struct net_device *) dev); |
627 | if (!master_dev) | |
628 | return 0; | |
629 | ops = master_dev->rtnl_link_ops; | |
630 | if (!ops) | |
631 | return 0; | |
632 | if (nla_put_string(skb, IFLA_INFO_SLAVE_KIND, ops->kind) < 0) | |
633 | return -EMSGSIZE; | |
634 | if (ops->fill_slave_info) { | |
ae0be8de | 635 | slave_data = nla_nest_start_noflag(skb, IFLA_INFO_SLAVE_DATA); |
ba7d49b1 JP |
636 | if (!slave_data) |
637 | return -EMSGSIZE; | |
638 | err = ops->fill_slave_info(skb, master_dev, dev); | |
639 | if (err < 0) | |
640 | goto err_cancel_slave_data; | |
641 | nla_nest_end(skb, slave_data); | |
642 | } | |
643 | return 0; | |
644 | ||
645 | err_cancel_slave_data: | |
646 | nla_nest_cancel(skb, slave_data); | |
647 | return err; | |
648 | } | |
649 | ||
650 | static int rtnl_link_info_fill(struct sk_buff *skb, | |
651 | const struct net_device *dev) | |
652 | { | |
653 | const struct rtnl_link_ops *ops = dev->rtnl_link_ops; | |
654 | struct nlattr *data; | |
655 | int err; | |
656 | ||
657 | if (!ops) | |
658 | return 0; | |
38f7b870 | 659 | if (nla_put_string(skb, IFLA_INFO_KIND, ops->kind) < 0) |
ba7d49b1 | 660 | return -EMSGSIZE; |
38f7b870 PM |
661 | if (ops->fill_xstats) { |
662 | err = ops->fill_xstats(skb, dev); | |
663 | if (err < 0) | |
ba7d49b1 | 664 | return err; |
38f7b870 PM |
665 | } |
666 | if (ops->fill_info) { | |
ae0be8de | 667 | data = nla_nest_start_noflag(skb, IFLA_INFO_DATA); |
ba7d49b1 JP |
668 | if (data == NULL) |
669 | return -EMSGSIZE; | |
38f7b870 PM |
670 | err = ops->fill_info(skb, dev); |
671 | if (err < 0) | |
672 | goto err_cancel_data; | |
673 | nla_nest_end(skb, data); | |
674 | } | |
38f7b870 PM |
675 | return 0; |
676 | ||
677 | err_cancel_data: | |
678 | nla_nest_cancel(skb, data); | |
ba7d49b1 JP |
679 | return err; |
680 | } | |
681 | ||
682 | static int rtnl_link_fill(struct sk_buff *skb, const struct net_device *dev) | |
683 | { | |
684 | struct nlattr *linkinfo; | |
685 | int err = -EMSGSIZE; | |
686 | ||
ae0be8de | 687 | linkinfo = nla_nest_start_noflag(skb, IFLA_LINKINFO); |
ba7d49b1 JP |
688 | if (linkinfo == NULL) |
689 | goto out; | |
690 | ||
691 | err = rtnl_link_info_fill(skb, dev); | |
692 | if (err < 0) | |
693 | goto err_cancel_link; | |
694 | ||
695 | err = rtnl_link_slave_info_fill(skb, dev); | |
696 | if (err < 0) | |
697 | goto err_cancel_link; | |
698 | ||
699 | nla_nest_end(skb, linkinfo); | |
700 | return 0; | |
701 | ||
38f7b870 PM |
702 | err_cancel_link: |
703 | nla_nest_cancel(skb, linkinfo); | |
704 | out: | |
705 | return err; | |
706 | } | |
707 | ||
95c96174 | 708 | int rtnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, unsigned int group, int echo) |
1da177e4 | 709 | { |
97c53cac | 710 | struct sock *rtnl = net->rtnl; |
1da177e4 LT |
711 | int err = 0; |
712 | ||
ac6d439d | 713 | NETLINK_CB(skb).dst_group = group; |
1da177e4 | 714 | if (echo) |
63354797 | 715 | refcount_inc(&skb->users); |
1da177e4 LT |
716 | netlink_broadcast(rtnl, skb, pid, group, GFP_KERNEL); |
717 | if (echo) | |
718 | err = netlink_unicast(rtnl, skb, pid, MSG_DONTWAIT); | |
719 | return err; | |
720 | } | |
721 | ||
97c53cac | 722 | int rtnl_unicast(struct sk_buff *skb, struct net *net, u32 pid) |
2942e900 | 723 | { |
97c53cac DL |
724 | struct sock *rtnl = net->rtnl; |
725 | ||
2942e900 TG |
726 | return nlmsg_unicast(rtnl, skb, pid); |
727 | } | |
e0d087af | 728 | EXPORT_SYMBOL(rtnl_unicast); |
2942e900 | 729 | |
1ce85fe4 PNA |
730 | void rtnl_notify(struct sk_buff *skb, struct net *net, u32 pid, u32 group, |
731 | struct nlmsghdr *nlh, gfp_t flags) | |
97676b6b | 732 | { |
97c53cac | 733 | struct sock *rtnl = net->rtnl; |
97676b6b TG |
734 | int report = 0; |
735 | ||
736 | if (nlh) | |
737 | report = nlmsg_report(nlh); | |
738 | ||
1ce85fe4 | 739 | nlmsg_notify(rtnl, skb, pid, group, report, flags); |
97676b6b | 740 | } |
e0d087af | 741 | EXPORT_SYMBOL(rtnl_notify); |
97676b6b | 742 | |
97c53cac | 743 | void rtnl_set_sk_err(struct net *net, u32 group, int error) |
97676b6b | 744 | { |
97c53cac DL |
745 | struct sock *rtnl = net->rtnl; |
746 | ||
97676b6b TG |
747 | netlink_set_err(rtnl, 0, group, error); |
748 | } | |
e0d087af | 749 | EXPORT_SYMBOL(rtnl_set_sk_err); |
97676b6b | 750 | |
1da177e4 LT |
751 | int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics) |
752 | { | |
2d7202bf TG |
753 | struct nlattr *mx; |
754 | int i, valid = 0; | |
755 | ||
c22a133a DA |
756 | /* nothing is dumped for dst_default_metrics, so just skip the loop */ |
757 | if (metrics == dst_default_metrics.metrics) | |
758 | return 0; | |
759 | ||
ae0be8de | 760 | mx = nla_nest_start_noflag(skb, RTA_METRICS); |
2d7202bf TG |
761 | if (mx == NULL) |
762 | return -ENOBUFS; | |
763 | ||
764 | for (i = 0; i < RTAX_MAX; i++) { | |
765 | if (metrics[i]) { | |
ea697639 DB |
766 | if (i == RTAX_CC_ALGO - 1) { |
767 | char tmp[TCP_CA_NAME_MAX], *name; | |
768 | ||
769 | name = tcp_ca_get_name_by_key(metrics[i], tmp); | |
770 | if (!name) | |
771 | continue; | |
772 | if (nla_put_string(skb, i + 1, name)) | |
773 | goto nla_put_failure; | |
c3a8d947 DB |
774 | } else if (i == RTAX_FEATURES - 1) { |
775 | u32 user_features = metrics[i] & RTAX_FEATURE_MASK; | |
776 | ||
f8edcd12 PS |
777 | if (!user_features) |
778 | continue; | |
c3a8d947 DB |
779 | BUILD_BUG_ON(RTAX_FEATURE_MASK & DST_FEATURE_MASK); |
780 | if (nla_put_u32(skb, i + 1, user_features)) | |
781 | goto nla_put_failure; | |
ea697639 DB |
782 | } else { |
783 | if (nla_put_u32(skb, i + 1, metrics[i])) | |
784 | goto nla_put_failure; | |
785 | } | |
2d7202bf | 786 | valid++; |
2d7202bf | 787 | } |
1da177e4 | 788 | } |
1da177e4 | 789 | |
a57d27fc DM |
790 | if (!valid) { |
791 | nla_nest_cancel(skb, mx); | |
792 | return 0; | |
793 | } | |
2d7202bf TG |
794 | |
795 | return nla_nest_end(skb, mx); | |
796 | ||
797 | nla_put_failure: | |
bc3ed28c TG |
798 | nla_nest_cancel(skb, mx); |
799 | return -EMSGSIZE; | |
1da177e4 | 800 | } |
e0d087af | 801 | EXPORT_SYMBOL(rtnetlink_put_metrics); |
1da177e4 | 802 | |
e3703b3d | 803 | int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst, u32 id, |
87a50699 | 804 | long expires, u32 error) |
e3703b3d TG |
805 | { |
806 | struct rta_cacheinfo ci = { | |
e3703b3d TG |
807 | .rta_error = error, |
808 | .rta_id = id, | |
e3703b3d TG |
809 | }; |
810 | ||
3940746d DA |
811 | if (dst) { |
812 | ci.rta_lastuse = jiffies_delta_to_clock_t(jiffies - dst->lastuse); | |
813 | ci.rta_used = dst->__use; | |
814 | ci.rta_clntref = atomic_read(&dst->__refcnt); | |
815 | } | |
8253947e LW |
816 | if (expires) { |
817 | unsigned long clock; | |
e3703b3d | 818 | |
8253947e LW |
819 | clock = jiffies_to_clock_t(abs(expires)); |
820 | clock = min_t(unsigned long, clock, INT_MAX); | |
821 | ci.rta_expires = (expires > 0) ? clock : -clock; | |
822 | } | |
e3703b3d TG |
823 | return nla_put(skb, RTA_CACHEINFO, sizeof(ci), &ci); |
824 | } | |
e3703b3d | 825 | EXPORT_SYMBOL_GPL(rtnl_put_cacheinfo); |
1da177e4 | 826 | |
93b2d4a2 | 827 | static void set_operstate(struct net_device *dev, unsigned char transition) |
b00055aa SR |
828 | { |
829 | unsigned char operstate = dev->operstate; | |
830 | ||
e0d087af | 831 | switch (transition) { |
b00055aa SR |
832 | case IF_OPER_UP: |
833 | if ((operstate == IF_OPER_DORMANT || | |
eec517cd | 834 | operstate == IF_OPER_TESTING || |
b00055aa | 835 | operstate == IF_OPER_UNKNOWN) && |
eec517cd | 836 | !netif_dormant(dev) && !netif_testing(dev)) |
b00055aa SR |
837 | operstate = IF_OPER_UP; |
838 | break; | |
839 | ||
eec517cd AL |
840 | case IF_OPER_TESTING: |
841 | if (operstate == IF_OPER_UP || | |
842 | operstate == IF_OPER_UNKNOWN) | |
843 | operstate = IF_OPER_TESTING; | |
844 | break; | |
845 | ||
b00055aa SR |
846 | case IF_OPER_DORMANT: |
847 | if (operstate == IF_OPER_UP || | |
848 | operstate == IF_OPER_UNKNOWN) | |
849 | operstate = IF_OPER_DORMANT; | |
850 | break; | |
3ff50b79 | 851 | } |
b00055aa SR |
852 | |
853 | if (dev->operstate != operstate) { | |
854 | write_lock_bh(&dev_base_lock); | |
855 | dev->operstate = operstate; | |
856 | write_unlock_bh(&dev_base_lock); | |
93b2d4a2 DM |
857 | netdev_state_change(dev); |
858 | } | |
b00055aa SR |
859 | } |
860 | ||
b1beb681 JB |
861 | static unsigned int rtnl_dev_get_flags(const struct net_device *dev) |
862 | { | |
863 | return (dev->flags & ~(IFF_PROMISC | IFF_ALLMULTI)) | | |
864 | (dev->gflags & (IFF_PROMISC | IFF_ALLMULTI)); | |
865 | } | |
866 | ||
3729d502 PM |
867 | static unsigned int rtnl_dev_combine_flags(const struct net_device *dev, |
868 | const struct ifinfomsg *ifm) | |
869 | { | |
870 | unsigned int flags = ifm->ifi_flags; | |
871 | ||
872 | /* bugwards compatibility: ifi_change == 0 is treated as ~0 */ | |
873 | if (ifm->ifi_change) | |
874 | flags = (flags & ifm->ifi_change) | | |
b1beb681 | 875 | (rtnl_dev_get_flags(dev) & ~ifm->ifi_change); |
3729d502 PM |
876 | |
877 | return flags; | |
878 | } | |
879 | ||
b60c5115 | 880 | static void copy_rtnl_link_stats(struct rtnl_link_stats *a, |
be1f3c2c | 881 | const struct rtnl_link_stats64 *b) |
1da177e4 | 882 | { |
b60c5115 TG |
883 | a->rx_packets = b->rx_packets; |
884 | a->tx_packets = b->tx_packets; | |
885 | a->rx_bytes = b->rx_bytes; | |
886 | a->tx_bytes = b->tx_bytes; | |
887 | a->rx_errors = b->rx_errors; | |
888 | a->tx_errors = b->tx_errors; | |
889 | a->rx_dropped = b->rx_dropped; | |
890 | a->tx_dropped = b->tx_dropped; | |
891 | ||
892 | a->multicast = b->multicast; | |
893 | a->collisions = b->collisions; | |
894 | ||
895 | a->rx_length_errors = b->rx_length_errors; | |
896 | a->rx_over_errors = b->rx_over_errors; | |
897 | a->rx_crc_errors = b->rx_crc_errors; | |
898 | a->rx_frame_errors = b->rx_frame_errors; | |
899 | a->rx_fifo_errors = b->rx_fifo_errors; | |
900 | a->rx_missed_errors = b->rx_missed_errors; | |
901 | ||
902 | a->tx_aborted_errors = b->tx_aborted_errors; | |
903 | a->tx_carrier_errors = b->tx_carrier_errors; | |
904 | a->tx_fifo_errors = b->tx_fifo_errors; | |
905 | a->tx_heartbeat_errors = b->tx_heartbeat_errors; | |
906 | a->tx_window_errors = b->tx_window_errors; | |
907 | ||
908 | a->rx_compressed = b->rx_compressed; | |
909 | a->tx_compressed = b->tx_compressed; | |
6e7333d3 JW |
910 | |
911 | a->rx_nohandler = b->rx_nohandler; | |
10708f37 JE |
912 | } |
913 | ||
c02db8c6 | 914 | /* All VF info */ |
115c9b81 GR |
915 | static inline int rtnl_vfinfo_size(const struct net_device *dev, |
916 | u32 ext_filter_mask) | |
ebc08a6f | 917 | { |
9af15c38 | 918 | if (dev->dev.parent && (ext_filter_mask & RTEXT_FILTER_VF)) { |
c02db8c6 | 919 | int num_vfs = dev_num_vf(dev->dev.parent); |
7e75f74a | 920 | size_t size = nla_total_size(0); |
045de01a | 921 | size += num_vfs * |
7e75f74a SD |
922 | (nla_total_size(0) + |
923 | nla_total_size(sizeof(struct ifla_vf_mac)) + | |
75345f88 | 924 | nla_total_size(sizeof(struct ifla_vf_broadcast)) + |
7e75f74a SD |
925 | nla_total_size(sizeof(struct ifla_vf_vlan)) + |
926 | nla_total_size(0) + /* nest IFLA_VF_VLAN_LIST */ | |
79aab093 MS |
927 | nla_total_size(MAX_VLAN_LIST_LEN * |
928 | sizeof(struct ifla_vf_vlan_info)) + | |
ed616689 | 929 | nla_total_size(sizeof(struct ifla_vf_spoofchk)) + |
7e75f74a | 930 | nla_total_size(sizeof(struct ifla_vf_tx_rate)) + |
945a3676 | 931 | nla_total_size(sizeof(struct ifla_vf_rate)) + |
01a3d796 | 932 | nla_total_size(sizeof(struct ifla_vf_link_state)) + |
3b766cd8 | 933 | nla_total_size(sizeof(struct ifla_vf_rss_query_en)) + |
7e75f74a | 934 | nla_total_size(0) + /* nest IFLA_VF_STATS */ |
3b766cd8 | 935 | /* IFLA_VF_STATS_RX_PACKETS */ |
343a6d8e | 936 | nla_total_size_64bit(sizeof(__u64)) + |
3b766cd8 | 937 | /* IFLA_VF_STATS_TX_PACKETS */ |
343a6d8e | 938 | nla_total_size_64bit(sizeof(__u64)) + |
3b766cd8 | 939 | /* IFLA_VF_STATS_RX_BYTES */ |
343a6d8e | 940 | nla_total_size_64bit(sizeof(__u64)) + |
3b766cd8 | 941 | /* IFLA_VF_STATS_TX_BYTES */ |
343a6d8e | 942 | nla_total_size_64bit(sizeof(__u64)) + |
3b766cd8 | 943 | /* IFLA_VF_STATS_BROADCAST */ |
343a6d8e | 944 | nla_total_size_64bit(sizeof(__u64)) + |
3b766cd8 | 945 | /* IFLA_VF_STATS_MULTICAST */ |
343a6d8e | 946 | nla_total_size_64bit(sizeof(__u64)) + |
c5a9f6f0 EE |
947 | /* IFLA_VF_STATS_RX_DROPPED */ |
948 | nla_total_size_64bit(sizeof(__u64)) + | |
949 | /* IFLA_VF_STATS_TX_DROPPED */ | |
950 | nla_total_size_64bit(sizeof(__u64)) + | |
dd461d6a | 951 | nla_total_size(sizeof(struct ifla_vf_trust))); |
c02db8c6 CW |
952 | return size; |
953 | } else | |
ebc08a6f WM |
954 | return 0; |
955 | } | |
956 | ||
c53864fd DG |
957 | static size_t rtnl_port_size(const struct net_device *dev, |
958 | u32 ext_filter_mask) | |
57b61080 SF |
959 | { |
960 | size_t port_size = nla_total_size(4) /* PORT_VF */ | |
961 | + nla_total_size(PORT_PROFILE_MAX) /* PORT_PROFILE */ | |
57b61080 SF |
962 | + nla_total_size(PORT_UUID_MAX) /* PORT_INSTANCE_UUID */ |
963 | + nla_total_size(PORT_UUID_MAX) /* PORT_HOST_UUID */ | |
964 | + nla_total_size(1) /* PROT_VDP_REQUEST */ | |
965 | + nla_total_size(2); /* PORT_VDP_RESPONSE */ | |
966 | size_t vf_ports_size = nla_total_size(sizeof(struct nlattr)); | |
967 | size_t vf_port_size = nla_total_size(sizeof(struct nlattr)) | |
968 | + port_size; | |
969 | size_t port_self_size = nla_total_size(sizeof(struct nlattr)) | |
970 | + port_size; | |
971 | ||
c53864fd DG |
972 | if (!dev->netdev_ops->ndo_get_vf_port || !dev->dev.parent || |
973 | !(ext_filter_mask & RTEXT_FILTER_VF)) | |
57b61080 SF |
974 | return 0; |
975 | if (dev_num_vf(dev->dev.parent)) | |
976 | return port_self_size + vf_ports_size + | |
977 | vf_port_size * dev_num_vf(dev->dev.parent); | |
978 | else | |
979 | return port_self_size; | |
980 | } | |
981 | ||
b5cdae32 | 982 | static size_t rtnl_xdp_size(void) |
d1fdd913 | 983 | { |
b3cfaa31 | 984 | size_t xdp_size = nla_total_size(0) + /* nest IFLA_XDP */ |
58038695 | 985 | nla_total_size(1) + /* XDP_ATTACHED */ |
a25717d2 | 986 | nla_total_size(4) + /* XDP_PROG_ID (or 1st mode) */ |
4f91da26 | 987 | nla_total_size(4); /* XDP_<mode>_PROG_ID */ |
d1fdd913 | 988 | |
b5cdae32 | 989 | return xdp_size; |
d1fdd913 BB |
990 | } |
991 | ||
88f4fb0c JP |
992 | static size_t rtnl_prop_list_size(const struct net_device *dev) |
993 | { | |
994 | struct netdev_name_node *name_node; | |
995 | size_t size; | |
996 | ||
997 | if (list_empty(&dev->name_node->list)) | |
998 | return 0; | |
999 | size = nla_total_size(0); | |
1000 | list_for_each_entry(name_node, &dev->name_node->list, list) | |
1001 | size += nla_total_size(ALTIFNAMSIZ); | |
1002 | return size; | |
1003 | } | |
1004 | ||
829eb208 RP |
1005 | static size_t rtnl_proto_down_size(const struct net_device *dev) |
1006 | { | |
1007 | size_t size = nla_total_size(1); | |
1008 | ||
1009 | if (dev->proto_down_reason) | |
1010 | size += nla_total_size(0) + nla_total_size(4); | |
1011 | ||
1012 | return size; | |
1013 | } | |
1014 | ||
115c9b81 GR |
1015 | static noinline size_t if_nlmsg_size(const struct net_device *dev, |
1016 | u32 ext_filter_mask) | |
339bf98f TG |
1017 | { |
1018 | return NLMSG_ALIGN(sizeof(struct ifinfomsg)) | |
1019 | + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */ | |
0b815a1a | 1020 | + nla_total_size(IFALIASZ) /* IFLA_IFALIAS */ |
339bf98f | 1021 | + nla_total_size(IFNAMSIZ) /* IFLA_QDISC */ |
270cb4d0 | 1022 | + nla_total_size_64bit(sizeof(struct rtnl_link_ifmap)) |
339bf98f | 1023 | + nla_total_size(sizeof(struct rtnl_link_stats)) |
35c58459 | 1024 | + nla_total_size_64bit(sizeof(struct rtnl_link_stats64)) |
339bf98f TG |
1025 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */ |
1026 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_BROADCAST */ | |
1027 | + nla_total_size(4) /* IFLA_TXQLEN */ | |
1028 | + nla_total_size(4) /* IFLA_WEIGHT */ | |
1029 | + nla_total_size(4) /* IFLA_MTU */ | |
1030 | + nla_total_size(4) /* IFLA_LINK */ | |
1031 | + nla_total_size(4) /* IFLA_MASTER */ | |
9a57247f | 1032 | + nla_total_size(1) /* IFLA_CARRIER */ |
edbc0bb3 | 1033 | + nla_total_size(4) /* IFLA_PROMISCUITY */ |
76ff5cc9 JP |
1034 | + nla_total_size(4) /* IFLA_NUM_TX_QUEUES */ |
1035 | + nla_total_size(4) /* IFLA_NUM_RX_QUEUES */ | |
6919756c TK |
1036 | + nla_total_size(4) /* IFLA_GSO_MAX_SEGS */ |
1037 | + nla_total_size(4) /* IFLA_GSO_MAX_SIZE */ | |
339bf98f | 1038 | + nla_total_size(1) /* IFLA_OPERSTATE */ |
38f7b870 | 1039 | + nla_total_size(1) /* IFLA_LINKMODE */ |
2d3b479d | 1040 | + nla_total_size(4) /* IFLA_CARRIER_CHANGES */ |
d37512a2 | 1041 | + nla_total_size(4) /* IFLA_LINK_NETNSID */ |
db833d40 | 1042 | + nla_total_size(4) /* IFLA_GROUP */ |
115c9b81 GR |
1043 | + nla_total_size(ext_filter_mask |
1044 | & RTEXT_FILTER_VF ? 4 : 0) /* IFLA_NUM_VF */ | |
1045 | + rtnl_vfinfo_size(dev, ext_filter_mask) /* IFLA_VFINFO_LIST */ | |
c53864fd | 1046 | + rtnl_port_size(dev, ext_filter_mask) /* IFLA_VF_PORTS + IFLA_PORT_SELF */ |
f8ff182c | 1047 | + rtnl_link_get_size(dev) /* IFLA_LINKINFO */ |
b1974ed0 | 1048 | + rtnl_link_get_af_size(dev, ext_filter_mask) /* IFLA_AF_SPEC */ |
82f28412 | 1049 | + nla_total_size(MAX_PHYS_ITEM_ID_LEN) /* IFLA_PHYS_PORT_ID */ |
88d6378b | 1050 | + nla_total_size(MAX_PHYS_ITEM_ID_LEN) /* IFLA_PHYS_SWITCH_ID */ |
c57c7a95 | 1051 | + nla_total_size(IFNAMSIZ) /* IFLA_PHYS_PORT_NAME */ |
b5cdae32 | 1052 | + rtnl_xdp_size() /* IFLA_XDP */ |
3d3ea5af | 1053 | + nla_total_size(4) /* IFLA_EVENT */ |
6621dd29 | 1054 | + nla_total_size(4) /* IFLA_NEW_NETNSID */ |
38e01b30 | 1055 | + nla_total_size(4) /* IFLA_NEW_IFINDEX */ |
829eb208 | 1056 | + rtnl_proto_down_size(dev) /* proto down */ |
7e4a8d5a | 1057 | + nla_total_size(4) /* IFLA_TARGET_NETNSID */ |
b2d3bcfa DD |
1058 | + nla_total_size(4) /* IFLA_CARRIER_UP_COUNT */ |
1059 | + nla_total_size(4) /* IFLA_CARRIER_DOWN_COUNT */ | |
3e7a50ce SH |
1060 | + nla_total_size(4) /* IFLA_MIN_MTU */ |
1061 | + nla_total_size(4) /* IFLA_MAX_MTU */ | |
88f4fb0c | 1062 | + rtnl_prop_list_size(dev) |
f74877a5 | 1063 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_PERM_ADDRESS */ |
79e1ad14 | 1064 | + 0; |
339bf98f TG |
1065 | } |
1066 | ||
57b61080 SF |
1067 | static int rtnl_vf_ports_fill(struct sk_buff *skb, struct net_device *dev) |
1068 | { | |
1069 | struct nlattr *vf_ports; | |
1070 | struct nlattr *vf_port; | |
1071 | int vf; | |
1072 | int err; | |
1073 | ||
ae0be8de | 1074 | vf_ports = nla_nest_start_noflag(skb, IFLA_VF_PORTS); |
57b61080 SF |
1075 | if (!vf_ports) |
1076 | return -EMSGSIZE; | |
1077 | ||
1078 | for (vf = 0; vf < dev_num_vf(dev->dev.parent); vf++) { | |
ae0be8de | 1079 | vf_port = nla_nest_start_noflag(skb, IFLA_VF_PORT); |
8ca94183 SF |
1080 | if (!vf_port) |
1081 | goto nla_put_failure; | |
a6574349 DM |
1082 | if (nla_put_u32(skb, IFLA_PORT_VF, vf)) |
1083 | goto nla_put_failure; | |
57b61080 | 1084 | err = dev->netdev_ops->ndo_get_vf_port(dev, vf, skb); |
8ca94183 SF |
1085 | if (err == -EMSGSIZE) |
1086 | goto nla_put_failure; | |
57b61080 | 1087 | if (err) { |
57b61080 SF |
1088 | nla_nest_cancel(skb, vf_port); |
1089 | continue; | |
1090 | } | |
1091 | nla_nest_end(skb, vf_port); | |
1092 | } | |
1093 | ||
1094 | nla_nest_end(skb, vf_ports); | |
1095 | ||
1096 | return 0; | |
8ca94183 SF |
1097 | |
1098 | nla_put_failure: | |
1099 | nla_nest_cancel(skb, vf_ports); | |
1100 | return -EMSGSIZE; | |
57b61080 SF |
1101 | } |
1102 | ||
1103 | static int rtnl_port_self_fill(struct sk_buff *skb, struct net_device *dev) | |
1104 | { | |
1105 | struct nlattr *port_self; | |
1106 | int err; | |
1107 | ||
ae0be8de | 1108 | port_self = nla_nest_start_noflag(skb, IFLA_PORT_SELF); |
57b61080 SF |
1109 | if (!port_self) |
1110 | return -EMSGSIZE; | |
1111 | ||
1112 | err = dev->netdev_ops->ndo_get_vf_port(dev, PORT_SELF_VF, skb); | |
1113 | if (err) { | |
1114 | nla_nest_cancel(skb, port_self); | |
8ca94183 | 1115 | return (err == -EMSGSIZE) ? err : 0; |
57b61080 SF |
1116 | } |
1117 | ||
1118 | nla_nest_end(skb, port_self); | |
1119 | ||
1120 | return 0; | |
1121 | } | |
1122 | ||
c53864fd DG |
1123 | static int rtnl_port_fill(struct sk_buff *skb, struct net_device *dev, |
1124 | u32 ext_filter_mask) | |
57b61080 SF |
1125 | { |
1126 | int err; | |
1127 | ||
c53864fd DG |
1128 | if (!dev->netdev_ops->ndo_get_vf_port || !dev->dev.parent || |
1129 | !(ext_filter_mask & RTEXT_FILTER_VF)) | |
57b61080 SF |
1130 | return 0; |
1131 | ||
1132 | err = rtnl_port_self_fill(skb, dev); | |
1133 | if (err) | |
1134 | return err; | |
1135 | ||
1136 | if (dev_num_vf(dev->dev.parent)) { | |
1137 | err = rtnl_vf_ports_fill(skb, dev); | |
1138 | if (err) | |
1139 | return err; | |
1140 | } | |
1141 | ||
1142 | return 0; | |
1143 | } | |
1144 | ||
66cae9ed JP |
1145 | static int rtnl_phys_port_id_fill(struct sk_buff *skb, struct net_device *dev) |
1146 | { | |
1147 | int err; | |
02637fce | 1148 | struct netdev_phys_item_id ppid; |
66cae9ed JP |
1149 | |
1150 | err = dev_get_phys_port_id(dev, &ppid); | |
1151 | if (err) { | |
1152 | if (err == -EOPNOTSUPP) | |
1153 | return 0; | |
1154 | return err; | |
1155 | } | |
1156 | ||
1157 | if (nla_put(skb, IFLA_PHYS_PORT_ID, ppid.id_len, ppid.id)) | |
1158 | return -EMSGSIZE; | |
1159 | ||
1160 | return 0; | |
1161 | } | |
1162 | ||
db24a904 DA |
1163 | static int rtnl_phys_port_name_fill(struct sk_buff *skb, struct net_device *dev) |
1164 | { | |
1165 | char name[IFNAMSIZ]; | |
1166 | int err; | |
1167 | ||
1168 | err = dev_get_phys_port_name(dev, name, sizeof(name)); | |
1169 | if (err) { | |
1170 | if (err == -EOPNOTSUPP) | |
1171 | return 0; | |
1172 | return err; | |
1173 | } | |
1174 | ||
77ef033b | 1175 | if (nla_put_string(skb, IFLA_PHYS_PORT_NAME, name)) |
db24a904 DA |
1176 | return -EMSGSIZE; |
1177 | ||
1178 | return 0; | |
1179 | } | |
1180 | ||
82f28412 JP |
1181 | static int rtnl_phys_switch_id_fill(struct sk_buff *skb, struct net_device *dev) |
1182 | { | |
bccb3025 | 1183 | struct netdev_phys_item_id ppid = { }; |
82f28412 | 1184 | int err; |
82f28412 | 1185 | |
bccb3025 | 1186 | err = dev_get_port_parent_id(dev, &ppid, false); |
82f28412 JP |
1187 | if (err) { |
1188 | if (err == -EOPNOTSUPP) | |
1189 | return 0; | |
1190 | return err; | |
1191 | } | |
1192 | ||
bccb3025 | 1193 | if (nla_put(skb, IFLA_PHYS_SWITCH_ID, ppid.id_len, ppid.id)) |
82f28412 JP |
1194 | return -EMSGSIZE; |
1195 | ||
1196 | return 0; | |
1197 | } | |
1198 | ||
b22b941b HFS |
1199 | static noinline_for_stack int rtnl_fill_stats(struct sk_buff *skb, |
1200 | struct net_device *dev) | |
1201 | { | |
550bce59 | 1202 | struct rtnl_link_stats64 *sp; |
b22b941b | 1203 | struct nlattr *attr; |
18402843 | 1204 | |
58414d32 ND |
1205 | attr = nla_reserve_64bit(skb, IFLA_STATS64, |
1206 | sizeof(struct rtnl_link_stats64), IFLA_PAD); | |
b22b941b HFS |
1207 | if (!attr) |
1208 | return -EMSGSIZE; | |
1209 | ||
550bce59 RP |
1210 | sp = nla_data(attr); |
1211 | dev_get_stats(dev, sp); | |
b22b941b | 1212 | |
550bce59 RP |
1213 | attr = nla_reserve(skb, IFLA_STATS, |
1214 | sizeof(struct rtnl_link_stats)); | |
b22b941b HFS |
1215 | if (!attr) |
1216 | return -EMSGSIZE; | |
1217 | ||
550bce59 | 1218 | copy_rtnl_link_stats(nla_data(attr), sp); |
b22b941b HFS |
1219 | |
1220 | return 0; | |
1221 | } | |
1222 | ||
1223 | static noinline_for_stack int rtnl_fill_vfinfo(struct sk_buff *skb, | |
1224 | struct net_device *dev, | |
1225 | int vfs_num, | |
1226 | struct nlattr *vfinfo) | |
1227 | { | |
1228 | struct ifla_vf_rss_query_en vf_rss_query_en; | |
79aab093 | 1229 | struct nlattr *vf, *vfstats, *vfvlanlist; |
b22b941b | 1230 | struct ifla_vf_link_state vf_linkstate; |
79aab093 | 1231 | struct ifla_vf_vlan_info vf_vlan_info; |
b22b941b HFS |
1232 | struct ifla_vf_spoofchk vf_spoofchk; |
1233 | struct ifla_vf_tx_rate vf_tx_rate; | |
1234 | struct ifla_vf_stats vf_stats; | |
1235 | struct ifla_vf_trust vf_trust; | |
1236 | struct ifla_vf_vlan vf_vlan; | |
1237 | struct ifla_vf_rate vf_rate; | |
b22b941b | 1238 | struct ifla_vf_mac vf_mac; |
75345f88 | 1239 | struct ifla_vf_broadcast vf_broadcast; |
b22b941b | 1240 | struct ifla_vf_info ivi; |
30aad417 DG |
1241 | struct ifla_vf_guid node_guid; |
1242 | struct ifla_vf_guid port_guid; | |
b22b941b | 1243 | |
0eed9cf5 MY |
1244 | memset(&ivi, 0, sizeof(ivi)); |
1245 | ||
b22b941b HFS |
1246 | /* Not all SR-IOV capable drivers support the |
1247 | * spoofcheck and "RSS query enable" query. Preset to | |
1248 | * -1 so the user space tool can detect that the driver | |
1249 | * didn't report anything. | |
1250 | */ | |
1251 | ivi.spoofchk = -1; | |
1252 | ivi.rss_query_en = -1; | |
1253 | ivi.trusted = -1; | |
b22b941b HFS |
1254 | /* The default value for VF link state is "auto" |
1255 | * IFLA_VF_LINK_STATE_AUTO which equals zero | |
1256 | */ | |
1257 | ivi.linkstate = 0; | |
79aab093 MS |
1258 | /* VLAN Protocol by default is 802.1Q */ |
1259 | ivi.vlan_proto = htons(ETH_P_8021Q); | |
b22b941b HFS |
1260 | if (dev->netdev_ops->ndo_get_vf_config(dev, vfs_num, &ivi)) |
1261 | return 0; | |
1262 | ||
775f4f05 | 1263 | memset(&vf_vlan_info, 0, sizeof(vf_vlan_info)); |
9fbf082f LR |
1264 | memset(&node_guid, 0, sizeof(node_guid)); |
1265 | memset(&port_guid, 0, sizeof(port_guid)); | |
775f4f05 | 1266 | |
b22b941b HFS |
1267 | vf_mac.vf = |
1268 | vf_vlan.vf = | |
79aab093 | 1269 | vf_vlan_info.vf = |
b22b941b HFS |
1270 | vf_rate.vf = |
1271 | vf_tx_rate.vf = | |
1272 | vf_spoofchk.vf = | |
1273 | vf_linkstate.vf = | |
1274 | vf_rss_query_en.vf = | |
9aed6ae0 DG |
1275 | vf_trust.vf = |
1276 | node_guid.vf = | |
1277 | port_guid.vf = ivi.vf; | |
b22b941b HFS |
1278 | |
1279 | memcpy(vf_mac.mac, ivi.mac, sizeof(ivi.mac)); | |
75345f88 | 1280 | memcpy(vf_broadcast.broadcast, dev->broadcast, dev->addr_len); |
b22b941b HFS |
1281 | vf_vlan.vlan = ivi.vlan; |
1282 | vf_vlan.qos = ivi.qos; | |
79aab093 MS |
1283 | vf_vlan_info.vlan = ivi.vlan; |
1284 | vf_vlan_info.qos = ivi.qos; | |
1285 | vf_vlan_info.vlan_proto = ivi.vlan_proto; | |
b22b941b HFS |
1286 | vf_tx_rate.rate = ivi.max_tx_rate; |
1287 | vf_rate.min_tx_rate = ivi.min_tx_rate; | |
1288 | vf_rate.max_tx_rate = ivi.max_tx_rate; | |
1289 | vf_spoofchk.setting = ivi.spoofchk; | |
1290 | vf_linkstate.link_state = ivi.linkstate; | |
1291 | vf_rss_query_en.setting = ivi.rss_query_en; | |
1292 | vf_trust.setting = ivi.trusted; | |
ae0be8de | 1293 | vf = nla_nest_start_noflag(skb, IFLA_VF_INFO); |
79aab093 MS |
1294 | if (!vf) |
1295 | goto nla_put_vfinfo_failure; | |
b22b941b | 1296 | if (nla_put(skb, IFLA_VF_MAC, sizeof(vf_mac), &vf_mac) || |
75345f88 | 1297 | nla_put(skb, IFLA_VF_BROADCAST, sizeof(vf_broadcast), &vf_broadcast) || |
b22b941b HFS |
1298 | nla_put(skb, IFLA_VF_VLAN, sizeof(vf_vlan), &vf_vlan) || |
1299 | nla_put(skb, IFLA_VF_RATE, sizeof(vf_rate), | |
1300 | &vf_rate) || | |
1301 | nla_put(skb, IFLA_VF_TX_RATE, sizeof(vf_tx_rate), | |
1302 | &vf_tx_rate) || | |
1303 | nla_put(skb, IFLA_VF_SPOOFCHK, sizeof(vf_spoofchk), | |
1304 | &vf_spoofchk) || | |
1305 | nla_put(skb, IFLA_VF_LINK_STATE, sizeof(vf_linkstate), | |
1306 | &vf_linkstate) || | |
1307 | nla_put(skb, IFLA_VF_RSS_QUERY_EN, | |
1308 | sizeof(vf_rss_query_en), | |
1309 | &vf_rss_query_en) || | |
1310 | nla_put(skb, IFLA_VF_TRUST, | |
1311 | sizeof(vf_trust), &vf_trust)) | |
79aab093 | 1312 | goto nla_put_vf_failure; |
30aad417 | 1313 | |
30aad417 DG |
1314 | if (dev->netdev_ops->ndo_get_vf_guid && |
1315 | !dev->netdev_ops->ndo_get_vf_guid(dev, vfs_num, &node_guid, | |
1316 | &port_guid)) { | |
1317 | if (nla_put(skb, IFLA_VF_IB_NODE_GUID, sizeof(node_guid), | |
1318 | &node_guid) || | |
1319 | nla_put(skb, IFLA_VF_IB_PORT_GUID, sizeof(port_guid), | |
1320 | &port_guid)) | |
1321 | goto nla_put_vf_failure; | |
1322 | } | |
ae0be8de | 1323 | vfvlanlist = nla_nest_start_noflag(skb, IFLA_VF_VLAN_LIST); |
79aab093 MS |
1324 | if (!vfvlanlist) |
1325 | goto nla_put_vf_failure; | |
1326 | if (nla_put(skb, IFLA_VF_VLAN_INFO, sizeof(vf_vlan_info), | |
1327 | &vf_vlan_info)) { | |
1328 | nla_nest_cancel(skb, vfvlanlist); | |
1329 | goto nla_put_vf_failure; | |
1330 | } | |
1331 | nla_nest_end(skb, vfvlanlist); | |
b22b941b HFS |
1332 | memset(&vf_stats, 0, sizeof(vf_stats)); |
1333 | if (dev->netdev_ops->ndo_get_vf_stats) | |
1334 | dev->netdev_ops->ndo_get_vf_stats(dev, vfs_num, | |
1335 | &vf_stats); | |
ae0be8de | 1336 | vfstats = nla_nest_start_noflag(skb, IFLA_VF_STATS); |
79aab093 MS |
1337 | if (!vfstats) |
1338 | goto nla_put_vf_failure; | |
343a6d8e ND |
1339 | if (nla_put_u64_64bit(skb, IFLA_VF_STATS_RX_PACKETS, |
1340 | vf_stats.rx_packets, IFLA_VF_STATS_PAD) || | |
1341 | nla_put_u64_64bit(skb, IFLA_VF_STATS_TX_PACKETS, | |
1342 | vf_stats.tx_packets, IFLA_VF_STATS_PAD) || | |
1343 | nla_put_u64_64bit(skb, IFLA_VF_STATS_RX_BYTES, | |
1344 | vf_stats.rx_bytes, IFLA_VF_STATS_PAD) || | |
1345 | nla_put_u64_64bit(skb, IFLA_VF_STATS_TX_BYTES, | |
1346 | vf_stats.tx_bytes, IFLA_VF_STATS_PAD) || | |
1347 | nla_put_u64_64bit(skb, IFLA_VF_STATS_BROADCAST, | |
1348 | vf_stats.broadcast, IFLA_VF_STATS_PAD) || | |
1349 | nla_put_u64_64bit(skb, IFLA_VF_STATS_MULTICAST, | |
c5a9f6f0 EE |
1350 | vf_stats.multicast, IFLA_VF_STATS_PAD) || |
1351 | nla_put_u64_64bit(skb, IFLA_VF_STATS_RX_DROPPED, | |
1352 | vf_stats.rx_dropped, IFLA_VF_STATS_PAD) || | |
1353 | nla_put_u64_64bit(skb, IFLA_VF_STATS_TX_DROPPED, | |
1354 | vf_stats.tx_dropped, IFLA_VF_STATS_PAD)) { | |
79aab093 MS |
1355 | nla_nest_cancel(skb, vfstats); |
1356 | goto nla_put_vf_failure; | |
1357 | } | |
b22b941b HFS |
1358 | nla_nest_end(skb, vfstats); |
1359 | nla_nest_end(skb, vf); | |
1360 | return 0; | |
79aab093 MS |
1361 | |
1362 | nla_put_vf_failure: | |
1363 | nla_nest_cancel(skb, vf); | |
1364 | nla_put_vfinfo_failure: | |
1365 | nla_nest_cancel(skb, vfinfo); | |
1366 | return -EMSGSIZE; | |
b22b941b HFS |
1367 | } |
1368 | ||
250fc3df FW |
1369 | static noinline_for_stack int rtnl_fill_vf(struct sk_buff *skb, |
1370 | struct net_device *dev, | |
1371 | u32 ext_filter_mask) | |
1372 | { | |
1373 | struct nlattr *vfinfo; | |
1374 | int i, num_vfs; | |
1375 | ||
1376 | if (!dev->dev.parent || ((ext_filter_mask & RTEXT_FILTER_VF) == 0)) | |
1377 | return 0; | |
1378 | ||
1379 | num_vfs = dev_num_vf(dev->dev.parent); | |
1380 | if (nla_put_u32(skb, IFLA_NUM_VF, num_vfs)) | |
1381 | return -EMSGSIZE; | |
1382 | ||
1383 | if (!dev->netdev_ops->ndo_get_vf_config) | |
1384 | return 0; | |
1385 | ||
ae0be8de | 1386 | vfinfo = nla_nest_start_noflag(skb, IFLA_VFINFO_LIST); |
250fc3df FW |
1387 | if (!vfinfo) |
1388 | return -EMSGSIZE; | |
1389 | ||
1390 | for (i = 0; i < num_vfs; i++) { | |
1391 | if (rtnl_fill_vfinfo(skb, dev, i, vfinfo)) | |
1392 | return -EMSGSIZE; | |
1393 | } | |
1394 | ||
1395 | nla_nest_end(skb, vfinfo); | |
1396 | return 0; | |
1397 | } | |
1398 | ||
b22b941b HFS |
1399 | static int rtnl_fill_link_ifmap(struct sk_buff *skb, struct net_device *dev) |
1400 | { | |
5f8e4474 KL |
1401 | struct rtnl_link_ifmap map; |
1402 | ||
1403 | memset(&map, 0, sizeof(map)); | |
1404 | map.mem_start = dev->mem_start; | |
1405 | map.mem_end = dev->mem_end; | |
1406 | map.base_addr = dev->base_addr; | |
1407 | map.irq = dev->irq; | |
1408 | map.dma = dev->dma; | |
1409 | map.port = dev->if_port; | |
1410 | ||
270cb4d0 | 1411 | if (nla_put_64bit(skb, IFLA_MAP, sizeof(map), &map, IFLA_PAD)) |
b22b941b HFS |
1412 | return -EMSGSIZE; |
1413 | ||
1414 | return 0; | |
1415 | } | |
1416 | ||
a25717d2 | 1417 | static u32 rtnl_xdp_prog_skb(struct net_device *dev) |
d67b9cd2 | 1418 | { |
58038695 | 1419 | const struct bpf_prog *generic_xdp_prog; |
d67b9cd2 DB |
1420 | |
1421 | ASSERT_RTNL(); | |
1422 | ||
58038695 | 1423 | generic_xdp_prog = rtnl_dereference(dev->xdp_prog); |
a25717d2 JK |
1424 | if (!generic_xdp_prog) |
1425 | return 0; | |
1426 | return generic_xdp_prog->aux->id; | |
1427 | } | |
d67b9cd2 | 1428 | |
a25717d2 JK |
1429 | static u32 rtnl_xdp_prog_drv(struct net_device *dev) |
1430 | { | |
7f0a8382 | 1431 | return dev_xdp_prog_id(dev, XDP_MODE_DRV); |
a25717d2 | 1432 | } |
118b4aa2 | 1433 | |
a25717d2 JK |
1434 | static u32 rtnl_xdp_prog_hw(struct net_device *dev) |
1435 | { | |
7f0a8382 | 1436 | return dev_xdp_prog_id(dev, XDP_MODE_HW); |
a25717d2 JK |
1437 | } |
1438 | ||
1439 | static int rtnl_xdp_report_one(struct sk_buff *skb, struct net_device *dev, | |
1440 | u32 *prog_id, u8 *mode, u8 tgt_mode, u32 attr, | |
1441 | u32 (*get_prog_id)(struct net_device *dev)) | |
1442 | { | |
1443 | u32 curr_id; | |
1444 | int err; | |
1445 | ||
1446 | curr_id = get_prog_id(dev); | |
1447 | if (!curr_id) | |
1448 | return 0; | |
1449 | ||
1450 | *prog_id = curr_id; | |
1451 | err = nla_put_u32(skb, attr, curr_id); | |
1452 | if (err) | |
1453 | return err; | |
d67b9cd2 | 1454 | |
a25717d2 JK |
1455 | if (*mode != XDP_ATTACHED_NONE) |
1456 | *mode = XDP_ATTACHED_MULTI; | |
1457 | else | |
1458 | *mode = tgt_mode; | |
118b4aa2 | 1459 | |
a25717d2 | 1460 | return 0; |
d67b9cd2 DB |
1461 | } |
1462 | ||
d1fdd913 BB |
1463 | static int rtnl_xdp_fill(struct sk_buff *skb, struct net_device *dev) |
1464 | { | |
d1fdd913 | 1465 | struct nlattr *xdp; |
58038695 | 1466 | u32 prog_id; |
d1fdd913 | 1467 | int err; |
4f91da26 | 1468 | u8 mode; |
d1fdd913 | 1469 | |
ae0be8de | 1470 | xdp = nla_nest_start_noflag(skb, IFLA_XDP); |
d1fdd913 BB |
1471 | if (!xdp) |
1472 | return -EMSGSIZE; | |
d67b9cd2 | 1473 | |
a25717d2 JK |
1474 | prog_id = 0; |
1475 | mode = XDP_ATTACHED_NONE; | |
202aabe8 JK |
1476 | err = rtnl_xdp_report_one(skb, dev, &prog_id, &mode, XDP_ATTACHED_SKB, |
1477 | IFLA_XDP_SKB_PROG_ID, rtnl_xdp_prog_skb); | |
1478 | if (err) | |
a25717d2 | 1479 | goto err_cancel; |
202aabe8 JK |
1480 | err = rtnl_xdp_report_one(skb, dev, &prog_id, &mode, XDP_ATTACHED_DRV, |
1481 | IFLA_XDP_DRV_PROG_ID, rtnl_xdp_prog_drv); | |
1482 | if (err) | |
a25717d2 | 1483 | goto err_cancel; |
202aabe8 JK |
1484 | err = rtnl_xdp_report_one(skb, dev, &prog_id, &mode, XDP_ATTACHED_HW, |
1485 | IFLA_XDP_HW_PROG_ID, rtnl_xdp_prog_hw); | |
1486 | if (err) | |
a25717d2 JK |
1487 | goto err_cancel; |
1488 | ||
4f91da26 | 1489 | err = nla_put_u8(skb, IFLA_XDP_ATTACHED, mode); |
d1fdd913 BB |
1490 | if (err) |
1491 | goto err_cancel; | |
1492 | ||
a25717d2 | 1493 | if (prog_id && mode != XDP_ATTACHED_MULTI) { |
58038695 MKL |
1494 | err = nla_put_u32(skb, IFLA_XDP_PROG_ID, prog_id); |
1495 | if (err) | |
1496 | goto err_cancel; | |
1497 | } | |
1498 | ||
d1fdd913 BB |
1499 | nla_nest_end(skb, xdp); |
1500 | return 0; | |
1501 | ||
1502 | err_cancel: | |
1503 | nla_nest_cancel(skb, xdp); | |
1504 | return err; | |
1505 | } | |
1506 | ||
3d3ea5af VY |
1507 | static u32 rtnl_get_event(unsigned long event) |
1508 | { | |
1509 | u32 rtnl_event_type = IFLA_EVENT_NONE; | |
1510 | ||
1511 | switch (event) { | |
1512 | case NETDEV_REBOOT: | |
1513 | rtnl_event_type = IFLA_EVENT_REBOOT; | |
1514 | break; | |
1515 | case NETDEV_FEAT_CHANGE: | |
1516 | rtnl_event_type = IFLA_EVENT_FEATURES; | |
1517 | break; | |
1518 | case NETDEV_BONDING_FAILOVER: | |
1519 | rtnl_event_type = IFLA_EVENT_BONDING_FAILOVER; | |
1520 | break; | |
1521 | case NETDEV_NOTIFY_PEERS: | |
1522 | rtnl_event_type = IFLA_EVENT_NOTIFY_PEERS; | |
1523 | break; | |
1524 | case NETDEV_RESEND_IGMP: | |
1525 | rtnl_event_type = IFLA_EVENT_IGMP_RESEND; | |
1526 | break; | |
1527 | case NETDEV_CHANGEINFODATA: | |
1528 | rtnl_event_type = IFLA_EVENT_BONDING_OPTIONS; | |
1529 | break; | |
1530 | default: | |
1531 | break; | |
1532 | } | |
1533 | ||
1534 | return rtnl_event_type; | |
1535 | } | |
1536 | ||
79110a04 FW |
1537 | static int put_master_ifindex(struct sk_buff *skb, struct net_device *dev) |
1538 | { | |
1539 | const struct net_device *upper_dev; | |
1540 | int ret = 0; | |
1541 | ||
1542 | rcu_read_lock(); | |
1543 | ||
1544 | upper_dev = netdev_master_upper_dev_get_rcu(dev); | |
1545 | if (upper_dev) | |
1546 | ret = nla_put_u32(skb, IFLA_MASTER, upper_dev->ifindex); | |
1547 | ||
1548 | rcu_read_unlock(); | |
1549 | return ret; | |
1550 | } | |
1551 | ||
feadc4b6 SD |
1552 | static int nla_put_iflink(struct sk_buff *skb, const struct net_device *dev, |
1553 | bool force) | |
79110a04 FW |
1554 | { |
1555 | int ifindex = dev_get_iflink(dev); | |
1556 | ||
feadc4b6 SD |
1557 | if (force || dev->ifindex != ifindex) |
1558 | return nla_put_u32(skb, IFLA_LINK, ifindex); | |
79110a04 | 1559 | |
feadc4b6 | 1560 | return 0; |
79110a04 FW |
1561 | } |
1562 | ||
6c557001 FW |
1563 | static noinline_for_stack int nla_put_ifalias(struct sk_buff *skb, |
1564 | struct net_device *dev) | |
1565 | { | |
1566 | char buf[IFALIASZ]; | |
1567 | int ret; | |
1568 | ||
1569 | ret = dev_get_alias(dev, buf, sizeof(buf)); | |
1570 | return ret > 0 ? nla_put_string(skb, IFLA_IFALIAS, buf) : 0; | |
1571 | } | |
1572 | ||
b1e66b9a | 1573 | static int rtnl_fill_link_netnsid(struct sk_buff *skb, |
79e1ad14 | 1574 | const struct net_device *dev, |
d4e4fdf9 | 1575 | struct net *src_net, gfp_t gfp) |
b1e66b9a | 1576 | { |
feadc4b6 SD |
1577 | bool put_iflink = false; |
1578 | ||
b1e66b9a FW |
1579 | if (dev->rtnl_link_ops && dev->rtnl_link_ops->get_link_net) { |
1580 | struct net *link_net = dev->rtnl_link_ops->get_link_net(dev); | |
1581 | ||
1582 | if (!net_eq(dev_net(dev), link_net)) { | |
d4e4fdf9 | 1583 | int id = peernet2id_alloc(src_net, link_net, gfp); |
b1e66b9a FW |
1584 | |
1585 | if (nla_put_s32(skb, IFLA_LINK_NETNSID, id)) | |
1586 | return -EMSGSIZE; | |
feadc4b6 SD |
1587 | |
1588 | put_iflink = true; | |
b1e66b9a FW |
1589 | } |
1590 | } | |
1591 | ||
feadc4b6 | 1592 | return nla_put_iflink(skb, dev, put_iflink); |
b1e66b9a FW |
1593 | } |
1594 | ||
070cbf5b FW |
1595 | static int rtnl_fill_link_af(struct sk_buff *skb, |
1596 | const struct net_device *dev, | |
1597 | u32 ext_filter_mask) | |
1598 | { | |
1599 | const struct rtnl_af_ops *af_ops; | |
1600 | struct nlattr *af_spec; | |
1601 | ||
ae0be8de | 1602 | af_spec = nla_nest_start_noflag(skb, IFLA_AF_SPEC); |
070cbf5b FW |
1603 | if (!af_spec) |
1604 | return -EMSGSIZE; | |
1605 | ||
5fa85a09 | 1606 | list_for_each_entry_rcu(af_ops, &rtnl_af_ops, list) { |
070cbf5b FW |
1607 | struct nlattr *af; |
1608 | int err; | |
1609 | ||
1610 | if (!af_ops->fill_link_af) | |
1611 | continue; | |
1612 | ||
ae0be8de | 1613 | af = nla_nest_start_noflag(skb, af_ops->family); |
070cbf5b FW |
1614 | if (!af) |
1615 | return -EMSGSIZE; | |
1616 | ||
1617 | err = af_ops->fill_link_af(skb, dev, ext_filter_mask); | |
1618 | /* | |
1619 | * Caller may return ENODATA to indicate that there | |
1620 | * was no data to be dumped. This is not an error, it | |
1621 | * means we should trim the attribute header and | |
1622 | * continue. | |
1623 | */ | |
1624 | if (err == -ENODATA) | |
1625 | nla_nest_cancel(skb, af); | |
1626 | else if (err < 0) | |
1627 | return -EMSGSIZE; | |
1628 | ||
1629 | nla_nest_end(skb, af); | |
1630 | } | |
1631 | ||
1632 | nla_nest_end(skb, af_spec); | |
1633 | return 0; | |
1634 | } | |
1635 | ||
88f4fb0c JP |
1636 | static int rtnl_fill_alt_ifnames(struct sk_buff *skb, |
1637 | const struct net_device *dev) | |
1638 | { | |
1639 | struct netdev_name_node *name_node; | |
1640 | int count = 0; | |
1641 | ||
1642 | list_for_each_entry(name_node, &dev->name_node->list, list) { | |
1643 | if (nla_put_string(skb, IFLA_ALT_IFNAME, name_node->name)) | |
1644 | return -EMSGSIZE; | |
1645 | count++; | |
1646 | } | |
1647 | return count; | |
1648 | } | |
1649 | ||
1650 | static int rtnl_fill_prop_list(struct sk_buff *skb, | |
1651 | const struct net_device *dev) | |
1652 | { | |
1653 | struct nlattr *prop_list; | |
1654 | int ret; | |
1655 | ||
1656 | prop_list = nla_nest_start(skb, IFLA_PROP_LIST); | |
1657 | if (!prop_list) | |
1658 | return -EMSGSIZE; | |
1659 | ||
1660 | ret = rtnl_fill_alt_ifnames(skb, dev); | |
1661 | if (ret <= 0) | |
1662 | goto nest_cancel; | |
1663 | ||
1664 | nla_nest_end(skb, prop_list); | |
1665 | return 0; | |
1666 | ||
1667 | nest_cancel: | |
1668 | nla_nest_cancel(skb, prop_list); | |
1669 | return ret; | |
1670 | } | |
1671 | ||
829eb208 RP |
1672 | static int rtnl_fill_proto_down(struct sk_buff *skb, |
1673 | const struct net_device *dev) | |
1674 | { | |
1675 | struct nlattr *pr; | |
1676 | u32 preason; | |
1677 | ||
1678 | if (nla_put_u8(skb, IFLA_PROTO_DOWN, dev->proto_down)) | |
1679 | goto nla_put_failure; | |
1680 | ||
1681 | preason = dev->proto_down_reason; | |
1682 | if (!preason) | |
1683 | return 0; | |
1684 | ||
1685 | pr = nla_nest_start(skb, IFLA_PROTO_DOWN_REASON); | |
1686 | if (!pr) | |
1687 | return -EMSGSIZE; | |
1688 | ||
1689 | if (nla_put_u32(skb, IFLA_PROTO_DOWN_REASON_VALUE, preason)) { | |
1690 | nla_nest_cancel(skb, pr); | |
1691 | goto nla_put_failure; | |
1692 | } | |
1693 | ||
1694 | nla_nest_end(skb, pr); | |
1695 | return 0; | |
1696 | ||
1697 | nla_put_failure: | |
1698 | return -EMSGSIZE; | |
1699 | } | |
1700 | ||
79e1ad14 JB |
1701 | static int rtnl_fill_ifinfo(struct sk_buff *skb, |
1702 | struct net_device *dev, struct net *src_net, | |
575c3e2a | 1703 | int type, u32 pid, u32 seq, u32 change, |
3d3ea5af | 1704 | unsigned int flags, u32 ext_filter_mask, |
38e01b30 | 1705 | u32 event, int *new_nsid, int new_ifindex, |
d4e4fdf9 | 1706 | int tgt_netnsid, gfp_t gfp) |
b60c5115 TG |
1707 | { |
1708 | struct ifinfomsg *ifm; | |
1709 | struct nlmsghdr *nlh; | |
1da177e4 | 1710 | |
2907c35f | 1711 | ASSERT_RTNL(); |
b60c5115 TG |
1712 | nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ifm), flags); |
1713 | if (nlh == NULL) | |
26932566 | 1714 | return -EMSGSIZE; |
1da177e4 | 1715 | |
b60c5115 TG |
1716 | ifm = nlmsg_data(nlh); |
1717 | ifm->ifi_family = AF_UNSPEC; | |
1718 | ifm->__ifi_pad = 0; | |
1719 | ifm->ifi_type = dev->type; | |
1720 | ifm->ifi_index = dev->ifindex; | |
1721 | ifm->ifi_flags = dev_get_flags(dev); | |
1722 | ifm->ifi_change = change; | |
1723 | ||
7e4a8d5a | 1724 | if (tgt_netnsid >= 0 && nla_put_s32(skb, IFLA_TARGET_NETNSID, tgt_netnsid)) |
79e1ad14 JB |
1725 | goto nla_put_failure; |
1726 | ||
a6574349 DM |
1727 | if (nla_put_string(skb, IFLA_IFNAME, dev->name) || |
1728 | nla_put_u32(skb, IFLA_TXQLEN, dev->tx_queue_len) || | |
1729 | nla_put_u8(skb, IFLA_OPERSTATE, | |
1730 | netif_running(dev) ? dev->operstate : IF_OPER_DOWN) || | |
1731 | nla_put_u8(skb, IFLA_LINKMODE, dev->link_mode) || | |
1732 | nla_put_u32(skb, IFLA_MTU, dev->mtu) || | |
3e7a50ce SH |
1733 | nla_put_u32(skb, IFLA_MIN_MTU, dev->min_mtu) || |
1734 | nla_put_u32(skb, IFLA_MAX_MTU, dev->max_mtu) || | |
a6574349 | 1735 | nla_put_u32(skb, IFLA_GROUP, dev->group) || |
edbc0bb3 | 1736 | nla_put_u32(skb, IFLA_PROMISCUITY, dev->promiscuity) || |
76ff5cc9 | 1737 | nla_put_u32(skb, IFLA_NUM_TX_QUEUES, dev->num_tx_queues) || |
c70ce028 ED |
1738 | nla_put_u32(skb, IFLA_GSO_MAX_SEGS, dev->gso_max_segs) || |
1739 | nla_put_u32(skb, IFLA_GSO_MAX_SIZE, dev->gso_max_size) || | |
1d69c2b3 | 1740 | #ifdef CONFIG_RPS |
76ff5cc9 | 1741 | nla_put_u32(skb, IFLA_NUM_RX_QUEUES, dev->num_rx_queues) || |
1d69c2b3 | 1742 | #endif |
79110a04 | 1743 | put_master_ifindex(skb, dev) || |
9a57247f | 1744 | nla_put_u8(skb, IFLA_CARRIER, netif_carrier_ok(dev)) || |
a6574349 DM |
1745 | (dev->qdisc && |
1746 | nla_put_string(skb, IFLA_QDISC, dev->qdisc->ops->id)) || | |
6c557001 | 1747 | nla_put_ifalias(skb, dev) || |
2d3b479d | 1748 | nla_put_u32(skb, IFLA_CARRIER_CHANGES, |
b2d3bcfa DD |
1749 | atomic_read(&dev->carrier_up_count) + |
1750 | atomic_read(&dev->carrier_down_count)) || | |
b2d3bcfa DD |
1751 | nla_put_u32(skb, IFLA_CARRIER_UP_COUNT, |
1752 | atomic_read(&dev->carrier_up_count)) || | |
1753 | nla_put_u32(skb, IFLA_CARRIER_DOWN_COUNT, | |
1754 | atomic_read(&dev->carrier_down_count))) | |
a6574349 | 1755 | goto nla_put_failure; |
0b815a1a | 1756 | |
829eb208 RP |
1757 | if (rtnl_fill_proto_down(skb, dev)) |
1758 | goto nla_put_failure; | |
1759 | ||
3d3ea5af VY |
1760 | if (event != IFLA_EVENT_NONE) { |
1761 | if (nla_put_u32(skb, IFLA_EVENT, event)) | |
1762 | goto nla_put_failure; | |
1763 | } | |
1764 | ||
b22b941b HFS |
1765 | if (rtnl_fill_link_ifmap(skb, dev)) |
1766 | goto nla_put_failure; | |
1da177e4 LT |
1767 | |
1768 | if (dev->addr_len) { | |
a6574349 DM |
1769 | if (nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr) || |
1770 | nla_put(skb, IFLA_BROADCAST, dev->addr_len, dev->broadcast)) | |
1771 | goto nla_put_failure; | |
1da177e4 LT |
1772 | } |
1773 | ||
66cae9ed JP |
1774 | if (rtnl_phys_port_id_fill(skb, dev)) |
1775 | goto nla_put_failure; | |
1776 | ||
db24a904 DA |
1777 | if (rtnl_phys_port_name_fill(skb, dev)) |
1778 | goto nla_put_failure; | |
1779 | ||
82f28412 JP |
1780 | if (rtnl_phys_switch_id_fill(skb, dev)) |
1781 | goto nla_put_failure; | |
1782 | ||
b22b941b | 1783 | if (rtnl_fill_stats(skb, dev)) |
10708f37 | 1784 | goto nla_put_failure; |
10708f37 | 1785 | |
250fc3df | 1786 | if (rtnl_fill_vf(skb, dev, ext_filter_mask)) |
a6574349 | 1787 | goto nla_put_failure; |
57b61080 | 1788 | |
c53864fd | 1789 | if (rtnl_port_fill(skb, dev, ext_filter_mask)) |
57b61080 SF |
1790 | goto nla_put_failure; |
1791 | ||
d1fdd913 BB |
1792 | if (rtnl_xdp_fill(skb, dev)) |
1793 | goto nla_put_failure; | |
1794 | ||
ba7d49b1 | 1795 | if (dev->rtnl_link_ops || rtnl_have_link_slave_info(dev)) { |
38f7b870 PM |
1796 | if (rtnl_link_fill(skb, dev) < 0) |
1797 | goto nla_put_failure; | |
1798 | } | |
1799 | ||
d4e4fdf9 | 1800 | if (rtnl_fill_link_netnsid(skb, dev, src_net, gfp)) |
b1e66b9a | 1801 | goto nla_put_failure; |
d37512a2 | 1802 | |
6621dd29 ND |
1803 | if (new_nsid && |
1804 | nla_put_s32(skb, IFLA_NEW_NETNSID, *new_nsid) < 0) | |
1805 | goto nla_put_failure; | |
38e01b30 ND |
1806 | if (new_ifindex && |
1807 | nla_put_s32(skb, IFLA_NEW_IFINDEX, new_ifindex) < 0) | |
1808 | goto nla_put_failure; | |
1809 | ||
f74877a5 MK |
1810 | if (memchr_inv(dev->perm_addr, '\0', dev->addr_len) && |
1811 | nla_put(skb, IFLA_PERM_ADDRESS, dev->addr_len, dev->perm_addr)) | |
1812 | goto nla_put_failure; | |
6621dd29 | 1813 | |
5fa85a09 | 1814 | rcu_read_lock(); |
070cbf5b | 1815 | if (rtnl_fill_link_af(skb, dev, ext_filter_mask)) |
5fa85a09 FW |
1816 | goto nla_put_failure_rcu; |
1817 | rcu_read_unlock(); | |
f8ff182c | 1818 | |
88f4fb0c JP |
1819 | if (rtnl_fill_prop_list(skb, dev)) |
1820 | goto nla_put_failure; | |
1821 | ||
053c095a JB |
1822 | nlmsg_end(skb, nlh); |
1823 | return 0; | |
b60c5115 | 1824 | |
5fa85a09 FW |
1825 | nla_put_failure_rcu: |
1826 | rcu_read_unlock(); | |
b60c5115 | 1827 | nla_put_failure: |
26932566 PM |
1828 | nlmsg_cancel(skb, nlh); |
1829 | return -EMSGSIZE; | |
1da177e4 LT |
1830 | } |
1831 | ||
f7b12606 | 1832 | static const struct nla_policy ifla_policy[IFLA_MAX+1] = { |
5176f91e | 1833 | [IFLA_IFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ-1 }, |
38f7b870 PM |
1834 | [IFLA_ADDRESS] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN }, |
1835 | [IFLA_BROADCAST] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN }, | |
5176f91e | 1836 | [IFLA_MAP] = { .len = sizeof(struct rtnl_link_ifmap) }, |
da5e0494 | 1837 | [IFLA_MTU] = { .type = NLA_U32 }, |
76e87306 | 1838 | [IFLA_LINK] = { .type = NLA_U32 }, |
fbaec0ea | 1839 | [IFLA_MASTER] = { .type = NLA_U32 }, |
9a57247f | 1840 | [IFLA_CARRIER] = { .type = NLA_U8 }, |
da5e0494 TG |
1841 | [IFLA_TXQLEN] = { .type = NLA_U32 }, |
1842 | [IFLA_WEIGHT] = { .type = NLA_U32 }, | |
1843 | [IFLA_OPERSTATE] = { .type = NLA_U8 }, | |
1844 | [IFLA_LINKMODE] = { .type = NLA_U8 }, | |
76e87306 | 1845 | [IFLA_LINKINFO] = { .type = NLA_NESTED }, |
d8a5ec67 | 1846 | [IFLA_NET_NS_PID] = { .type = NLA_U32 }, |
f0630529 | 1847 | [IFLA_NET_NS_FD] = { .type = NLA_U32 }, |
2459b4c6 ND |
1848 | /* IFLA_IFALIAS is a string, but policy is set to NLA_BINARY to |
1849 | * allow 0-length string (needed to remove an alias). | |
1850 | */ | |
1851 | [IFLA_IFALIAS] = { .type = NLA_BINARY, .len = IFALIASZ - 1 }, | |
c02db8c6 | 1852 | [IFLA_VFINFO_LIST] = {. type = NLA_NESTED }, |
57b61080 SF |
1853 | [IFLA_VF_PORTS] = { .type = NLA_NESTED }, |
1854 | [IFLA_PORT_SELF] = { .type = NLA_NESTED }, | |
f8ff182c | 1855 | [IFLA_AF_SPEC] = { .type = NLA_NESTED }, |
115c9b81 | 1856 | [IFLA_EXT_MASK] = { .type = NLA_U32 }, |
edbc0bb3 | 1857 | [IFLA_PROMISCUITY] = { .type = NLA_U32 }, |
76ff5cc9 JP |
1858 | [IFLA_NUM_TX_QUEUES] = { .type = NLA_U32 }, |
1859 | [IFLA_NUM_RX_QUEUES] = { .type = NLA_U32 }, | |
46e6b992 SH |
1860 | [IFLA_GSO_MAX_SEGS] = { .type = NLA_U32 }, |
1861 | [IFLA_GSO_MAX_SIZE] = { .type = NLA_U32 }, | |
02637fce | 1862 | [IFLA_PHYS_PORT_ID] = { .type = NLA_BINARY, .len = MAX_PHYS_ITEM_ID_LEN }, |
2d3b479d | 1863 | [IFLA_CARRIER_CHANGES] = { .type = NLA_U32 }, /* ignored */ |
82f28412 | 1864 | [IFLA_PHYS_SWITCH_ID] = { .type = NLA_BINARY, .len = MAX_PHYS_ITEM_ID_LEN }, |
317f4810 | 1865 | [IFLA_LINK_NETNSID] = { .type = NLA_S32 }, |
88d6378b | 1866 | [IFLA_PROTO_DOWN] = { .type = NLA_U8 }, |
d1fdd913 | 1867 | [IFLA_XDP] = { .type = NLA_NESTED }, |
3d3ea5af | 1868 | [IFLA_EVENT] = { .type = NLA_U32 }, |
db833d40 | 1869 | [IFLA_GROUP] = { .type = NLA_U32 }, |
7e4a8d5a | 1870 | [IFLA_TARGET_NETNSID] = { .type = NLA_S32 }, |
b2d3bcfa DD |
1871 | [IFLA_CARRIER_UP_COUNT] = { .type = NLA_U32 }, |
1872 | [IFLA_CARRIER_DOWN_COUNT] = { .type = NLA_U32 }, | |
3e7a50ce SH |
1873 | [IFLA_MIN_MTU] = { .type = NLA_U32 }, |
1874 | [IFLA_MAX_MTU] = { .type = NLA_U32 }, | |
36fbf1e5 JP |
1875 | [IFLA_PROP_LIST] = { .type = NLA_NESTED }, |
1876 | [IFLA_ALT_IFNAME] = { .type = NLA_STRING, | |
1877 | .len = ALTIFNAMSIZ - 1 }, | |
f74877a5 | 1878 | [IFLA_PERM_ADDRESS] = { .type = NLA_REJECT }, |
829eb208 | 1879 | [IFLA_PROTO_DOWN_REASON] = { .type = NLA_NESTED }, |
7e4a5131 | 1880 | [IFLA_NEW_IFINDEX] = NLA_POLICY_MIN(NLA_S32, 1), |
da5e0494 TG |
1881 | }; |
1882 | ||
38f7b870 PM |
1883 | static const struct nla_policy ifla_info_policy[IFLA_INFO_MAX+1] = { |
1884 | [IFLA_INFO_KIND] = { .type = NLA_STRING }, | |
1885 | [IFLA_INFO_DATA] = { .type = NLA_NESTED }, | |
ba7d49b1 JP |
1886 | [IFLA_INFO_SLAVE_KIND] = { .type = NLA_STRING }, |
1887 | [IFLA_INFO_SLAVE_DATA] = { .type = NLA_NESTED }, | |
38f7b870 PM |
1888 | }; |
1889 | ||
c02db8c6 | 1890 | static const struct nla_policy ifla_vf_policy[IFLA_VF_MAX+1] = { |
364d5716 | 1891 | [IFLA_VF_MAC] = { .len = sizeof(struct ifla_vf_mac) }, |
75345f88 | 1892 | [IFLA_VF_BROADCAST] = { .type = NLA_REJECT }, |
364d5716 | 1893 | [IFLA_VF_VLAN] = { .len = sizeof(struct ifla_vf_vlan) }, |
79aab093 | 1894 | [IFLA_VF_VLAN_LIST] = { .type = NLA_NESTED }, |
364d5716 DB |
1895 | [IFLA_VF_TX_RATE] = { .len = sizeof(struct ifla_vf_tx_rate) }, |
1896 | [IFLA_VF_SPOOFCHK] = { .len = sizeof(struct ifla_vf_spoofchk) }, | |
1897 | [IFLA_VF_RATE] = { .len = sizeof(struct ifla_vf_rate) }, | |
1898 | [IFLA_VF_LINK_STATE] = { .len = sizeof(struct ifla_vf_link_state) }, | |
01a3d796 | 1899 | [IFLA_VF_RSS_QUERY_EN] = { .len = sizeof(struct ifla_vf_rss_query_en) }, |
3b766cd8 | 1900 | [IFLA_VF_STATS] = { .type = NLA_NESTED }, |
dd461d6a | 1901 | [IFLA_VF_TRUST] = { .len = sizeof(struct ifla_vf_trust) }, |
cc8e27cc EC |
1902 | [IFLA_VF_IB_NODE_GUID] = { .len = sizeof(struct ifla_vf_guid) }, |
1903 | [IFLA_VF_IB_PORT_GUID] = { .len = sizeof(struct ifla_vf_guid) }, | |
3b766cd8 EBE |
1904 | }; |
1905 | ||
57b61080 SF |
1906 | static const struct nla_policy ifla_port_policy[IFLA_PORT_MAX+1] = { |
1907 | [IFLA_PORT_VF] = { .type = NLA_U32 }, | |
1908 | [IFLA_PORT_PROFILE] = { .type = NLA_STRING, | |
1909 | .len = PORT_PROFILE_MAX }, | |
57b61080 SF |
1910 | [IFLA_PORT_INSTANCE_UUID] = { .type = NLA_BINARY, |
1911 | .len = PORT_UUID_MAX }, | |
1912 | [IFLA_PORT_HOST_UUID] = { .type = NLA_STRING, | |
1913 | .len = PORT_UUID_MAX }, | |
1914 | [IFLA_PORT_REQUEST] = { .type = NLA_U8, }, | |
1915 | [IFLA_PORT_RESPONSE] = { .type = NLA_U16, }, | |
025331df DB |
1916 | |
1917 | /* Unused, but we need to keep it here since user space could | |
1918 | * fill it. It's also broken with regard to NLA_BINARY use in | |
1919 | * combination with structs. | |
1920 | */ | |
1921 | [IFLA_PORT_VSI_TYPE] = { .type = NLA_BINARY, | |
1922 | .len = sizeof(struct ifla_port_vsi) }, | |
57b61080 SF |
1923 | }; |
1924 | ||
d1fdd913 | 1925 | static const struct nla_policy ifla_xdp_policy[IFLA_XDP_MAX + 1] = { |
92234c8f | 1926 | [IFLA_XDP_UNSPEC] = { .strict_start_type = IFLA_XDP_EXPECTED_FD }, |
d1fdd913 | 1927 | [IFLA_XDP_FD] = { .type = NLA_S32 }, |
92234c8f | 1928 | [IFLA_XDP_EXPECTED_FD] = { .type = NLA_S32 }, |
d1fdd913 | 1929 | [IFLA_XDP_ATTACHED] = { .type = NLA_U8 }, |
85de8576 | 1930 | [IFLA_XDP_FLAGS] = { .type = NLA_U32 }, |
58038695 | 1931 | [IFLA_XDP_PROG_ID] = { .type = NLA_U32 }, |
d1fdd913 BB |
1932 | }; |
1933 | ||
dc599f76 DA |
1934 | static const struct rtnl_link_ops *linkinfo_to_kind_ops(const struct nlattr *nla) |
1935 | { | |
1936 | const struct rtnl_link_ops *ops = NULL; | |
1937 | struct nlattr *linfo[IFLA_INFO_MAX + 1]; | |
1938 | ||
8cb08174 | 1939 | if (nla_parse_nested_deprecated(linfo, IFLA_INFO_MAX, nla, ifla_info_policy, NULL) < 0) |
dc599f76 DA |
1940 | return NULL; |
1941 | ||
1942 | if (linfo[IFLA_INFO_KIND]) { | |
1943 | char kind[MODULE_NAME_LEN]; | |
1944 | ||
872f6903 | 1945 | nla_strscpy(kind, linfo[IFLA_INFO_KIND], sizeof(kind)); |
dc599f76 DA |
1946 | ops = rtnl_link_ops_get(kind); |
1947 | } | |
1948 | ||
1949 | return ops; | |
1950 | } | |
1951 | ||
1952 | static bool link_master_filtered(struct net_device *dev, int master_idx) | |
1953 | { | |
1954 | struct net_device *master; | |
1955 | ||
1956 | if (!master_idx) | |
1957 | return false; | |
1958 | ||
1959 | master = netdev_master_upper_dev_get(dev); | |
1960 | if (!master || master->ifindex != master_idx) | |
1961 | return true; | |
1962 | ||
1963 | return false; | |
1964 | } | |
1965 | ||
1966 | static bool link_kind_filtered(const struct net_device *dev, | |
1967 | const struct rtnl_link_ops *kind_ops) | |
1968 | { | |
1969 | if (kind_ops && dev->rtnl_link_ops != kind_ops) | |
1970 | return true; | |
1971 | ||
1972 | return false; | |
1973 | } | |
1974 | ||
1975 | static bool link_dump_filtered(struct net_device *dev, | |
1976 | int master_idx, | |
1977 | const struct rtnl_link_ops *kind_ops) | |
1978 | { | |
1979 | if (link_master_filtered(dev, master_idx) || | |
1980 | link_kind_filtered(dev, kind_ops)) | |
1981 | return true; | |
1982 | ||
1983 | return false; | |
1984 | } | |
1985 | ||
c383edc4 CB |
1986 | /** |
1987 | * rtnl_get_net_ns_capable - Get netns if sufficiently privileged. | |
1988 | * @sk: netlink socket | |
1989 | * @netnsid: network namespace identifier | |
1990 | * | |
1991 | * Returns the network namespace identified by netnsid on success or an error | |
1992 | * pointer on failure. | |
1993 | */ | |
1994 | struct net *rtnl_get_net_ns_capable(struct sock *sk, int netnsid) | |
79e1ad14 JB |
1995 | { |
1996 | struct net *net; | |
1997 | ||
f428fe4a | 1998 | net = get_net_ns_by_id(sock_net(sk), netnsid); |
79e1ad14 JB |
1999 | if (!net) |
2000 | return ERR_PTR(-EINVAL); | |
2001 | ||
2002 | /* For now, the caller is required to have CAP_NET_ADMIN in | |
2003 | * the user namespace owning the target net ns. | |
2004 | */ | |
f428fe4a | 2005 | if (!sk_ns_capable(sk, net->user_ns, CAP_NET_ADMIN)) { |
79e1ad14 JB |
2006 | put_net(net); |
2007 | return ERR_PTR(-EACCES); | |
2008 | } | |
2009 | return net; | |
2010 | } | |
c383edc4 | 2011 | EXPORT_SYMBOL_GPL(rtnl_get_net_ns_capable); |
79e1ad14 | 2012 | |
905cf0ab DA |
2013 | static int rtnl_valid_dump_ifinfo_req(const struct nlmsghdr *nlh, |
2014 | bool strict_check, struct nlattr **tb, | |
2015 | struct netlink_ext_ack *extack) | |
2016 | { | |
2017 | int hdrlen; | |
2018 | ||
2019 | if (strict_check) { | |
2020 | struct ifinfomsg *ifm; | |
2021 | ||
2022 | if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*ifm))) { | |
2023 | NL_SET_ERR_MSG(extack, "Invalid header for link dump"); | |
2024 | return -EINVAL; | |
2025 | } | |
2026 | ||
2027 | ifm = nlmsg_data(nlh); | |
2028 | if (ifm->__ifi_pad || ifm->ifi_type || ifm->ifi_flags || | |
2029 | ifm->ifi_change) { | |
2030 | NL_SET_ERR_MSG(extack, "Invalid values in header for link dump request"); | |
2031 | return -EINVAL; | |
2032 | } | |
2033 | if (ifm->ifi_index) { | |
2034 | NL_SET_ERR_MSG(extack, "Filter by device index not supported for link dumps"); | |
2035 | return -EINVAL; | |
2036 | } | |
2037 | ||
8cb08174 JB |
2038 | return nlmsg_parse_deprecated_strict(nlh, sizeof(*ifm), tb, |
2039 | IFLA_MAX, ifla_policy, | |
2040 | extack); | |
905cf0ab DA |
2041 | } |
2042 | ||
2043 | /* A hack to preserve kernel<->userspace interface. | |
2044 | * The correct header is ifinfomsg. It is consistent with rtnl_getlink. | |
2045 | * However, before Linux v3.9 the code here assumed rtgenmsg and that's | |
2046 | * what iproute2 < v3.9.0 used. | |
2047 | * We can detect the old iproute2. Even including the IFLA_EXT_MASK | |
2048 | * attribute, its netlink message is shorter than struct ifinfomsg. | |
2049 | */ | |
2050 | hdrlen = nlmsg_len(nlh) < sizeof(struct ifinfomsg) ? | |
2051 | sizeof(struct rtgenmsg) : sizeof(struct ifinfomsg); | |
2052 | ||
8cb08174 JB |
2053 | return nlmsg_parse_deprecated(nlh, hdrlen, tb, IFLA_MAX, ifla_policy, |
2054 | extack); | |
905cf0ab DA |
2055 | } |
2056 | ||
f7b12606 JP |
2057 | static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb) |
2058 | { | |
905cf0ab DA |
2059 | struct netlink_ext_ack *extack = cb->extack; |
2060 | const struct nlmsghdr *nlh = cb->nlh; | |
f7b12606 | 2061 | struct net *net = sock_net(skb->sk); |
79e1ad14 | 2062 | struct net *tgt_net = net; |
f7b12606 JP |
2063 | int h, s_h; |
2064 | int idx = 0, s_idx; | |
2065 | struct net_device *dev; | |
2066 | struct hlist_head *head; | |
2067 | struct nlattr *tb[IFLA_MAX+1]; | |
2068 | u32 ext_filter_mask = 0; | |
dc599f76 DA |
2069 | const struct rtnl_link_ops *kind_ops = NULL; |
2070 | unsigned int flags = NLM_F_MULTI; | |
2071 | int master_idx = 0; | |
79e1ad14 | 2072 | int netnsid = -1; |
905cf0ab | 2073 | int err, i; |
f7b12606 JP |
2074 | |
2075 | s_h = cb->args[0]; | |
2076 | s_idx = cb->args[1]; | |
2077 | ||
905cf0ab DA |
2078 | err = rtnl_valid_dump_ifinfo_req(nlh, cb->strict_check, tb, extack); |
2079 | if (err < 0) { | |
2080 | if (cb->strict_check) | |
2081 | return err; | |
2082 | ||
2083 | goto walk_entries; | |
2084 | } | |
2085 | ||
2086 | for (i = 0; i <= IFLA_MAX; ++i) { | |
2087 | if (!tb[i]) | |
2088 | continue; | |
e5eca6d4 | 2089 | |
905cf0ab DA |
2090 | /* new attributes should only be added with strict checking */ |
2091 | switch (i) { | |
2092 | case IFLA_TARGET_NETNSID: | |
2093 | netnsid = nla_get_s32(tb[i]); | |
c383edc4 | 2094 | tgt_net = rtnl_get_net_ns_capable(skb->sk, netnsid); |
905cf0ab DA |
2095 | if (IS_ERR(tgt_net)) { |
2096 | NL_SET_ERR_MSG(extack, "Invalid target network namespace id"); | |
893626d6 | 2097 | return PTR_ERR(tgt_net); |
905cf0ab DA |
2098 | } |
2099 | break; | |
2100 | case IFLA_EXT_MASK: | |
2101 | ext_filter_mask = nla_get_u32(tb[i]); | |
2102 | break; | |
2103 | case IFLA_MASTER: | |
2104 | master_idx = nla_get_u32(tb[i]); | |
2105 | break; | |
2106 | case IFLA_LINKINFO: | |
2107 | kind_ops = linkinfo_to_kind_ops(tb[i]); | |
2108 | break; | |
2109 | default: | |
2110 | if (cb->strict_check) { | |
2111 | NL_SET_ERR_MSG(extack, "Unsupported attribute in link dump request"); | |
2112 | return -EINVAL; | |
2113 | } | |
79e1ad14 | 2114 | } |
f7b12606 JP |
2115 | } |
2116 | ||
905cf0ab DA |
2117 | if (master_idx || kind_ops) |
2118 | flags |= NLM_F_DUMP_FILTERED; | |
2119 | ||
2120 | walk_entries: | |
f7b12606 JP |
2121 | for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) { |
2122 | idx = 0; | |
79e1ad14 | 2123 | head = &tgt_net->dev_index_head[h]; |
cac5e65e | 2124 | hlist_for_each_entry(dev, head, index_hlist) { |
dc599f76 | 2125 | if (link_dump_filtered(dev, master_idx, kind_ops)) |
3f0ae05d | 2126 | goto cont; |
f7b12606 JP |
2127 | if (idx < s_idx) |
2128 | goto cont; | |
79e1ad14 JB |
2129 | err = rtnl_fill_ifinfo(skb, dev, net, |
2130 | RTM_NEWLINK, | |
973462bb | 2131 | NETLINK_CB(cb->skb).portid, |
905cf0ab | 2132 | nlh->nlmsg_seq, 0, flags, |
38e01b30 | 2133 | ext_filter_mask, 0, NULL, 0, |
d4e4fdf9 | 2134 | netnsid, GFP_KERNEL); |
973462bb | 2135 | |
f6c5775f DA |
2136 | if (err < 0) { |
2137 | if (likely(skb->len)) | |
2138 | goto out; | |
2139 | ||
2140 | goto out_err; | |
2141 | } | |
f7b12606 JP |
2142 | cont: |
2143 | idx++; | |
2144 | } | |
2145 | } | |
2146 | out: | |
f6c5775f DA |
2147 | err = skb->len; |
2148 | out_err: | |
f7b12606 JP |
2149 | cb->args[1] = idx; |
2150 | cb->args[0] = h; | |
a9ecb0cb | 2151 | cb->seq = tgt_net->dev_base_seq; |
d0225784 | 2152 | nl_dump_check_consistent(cb, nlmsg_hdr(skb)); |
79e1ad14 JB |
2153 | if (netnsid >= 0) |
2154 | put_net(tgt_net); | |
f7b12606 | 2155 | |
f6c5775f | 2156 | return err; |
f7b12606 JP |
2157 | } |
2158 | ||
fceb6435 JB |
2159 | int rtnl_nla_parse_ifla(struct nlattr **tb, const struct nlattr *head, int len, |
2160 | struct netlink_ext_ack *exterr) | |
f7b12606 | 2161 | { |
8cb08174 JB |
2162 | return nla_parse_deprecated(tb, IFLA_MAX, head, len, ifla_policy, |
2163 | exterr); | |
f7b12606 JP |
2164 | } |
2165 | EXPORT_SYMBOL(rtnl_nla_parse_ifla); | |
2166 | ||
81adee47 EB |
2167 | struct net *rtnl_link_get_net(struct net *src_net, struct nlattr *tb[]) |
2168 | { | |
2169 | struct net *net; | |
2170 | /* Examine the link attributes and figure out which | |
2171 | * network namespace we are talking about. | |
2172 | */ | |
2173 | if (tb[IFLA_NET_NS_PID]) | |
2174 | net = get_net_ns_by_pid(nla_get_u32(tb[IFLA_NET_NS_PID])); | |
f0630529 EB |
2175 | else if (tb[IFLA_NET_NS_FD]) |
2176 | net = get_net_ns_by_fd(nla_get_u32(tb[IFLA_NET_NS_FD])); | |
81adee47 EB |
2177 | else |
2178 | net = get_net(src_net); | |
2179 | return net; | |
2180 | } | |
2181 | EXPORT_SYMBOL(rtnl_link_get_net); | |
2182 | ||
7c4f63ba CB |
2183 | /* Figure out which network namespace we are talking about by |
2184 | * examining the link attributes in the following order: | |
2185 | * | |
2186 | * 1. IFLA_NET_NS_PID | |
2187 | * 2. IFLA_NET_NS_FD | |
7e4a8d5a | 2188 | * 3. IFLA_TARGET_NETNSID |
7c4f63ba CB |
2189 | */ |
2190 | static struct net *rtnl_link_get_net_by_nlattr(struct net *src_net, | |
2191 | struct nlattr *tb[]) | |
2192 | { | |
2193 | struct net *net; | |
2194 | ||
2195 | if (tb[IFLA_NET_NS_PID] || tb[IFLA_NET_NS_FD]) | |
2196 | return rtnl_link_get_net(src_net, tb); | |
2197 | ||
7e4a8d5a | 2198 | if (!tb[IFLA_TARGET_NETNSID]) |
7c4f63ba CB |
2199 | return get_net(src_net); |
2200 | ||
7e4a8d5a | 2201 | net = get_net_ns_by_id(src_net, nla_get_u32(tb[IFLA_TARGET_NETNSID])); |
7c4f63ba CB |
2202 | if (!net) |
2203 | return ERR_PTR(-EINVAL); | |
2204 | ||
2205 | return net; | |
2206 | } | |
2207 | ||
2208 | static struct net *rtnl_link_get_net_capable(const struct sk_buff *skb, | |
2209 | struct net *src_net, | |
2210 | struct nlattr *tb[], int cap) | |
2211 | { | |
2212 | struct net *net; | |
2213 | ||
2214 | net = rtnl_link_get_net_by_nlattr(src_net, tb); | |
2215 | if (IS_ERR(net)) | |
2216 | return net; | |
2217 | ||
2218 | if (!netlink_ns_capable(skb, net->user_ns, cap)) { | |
2219 | put_net(net); | |
2220 | return ERR_PTR(-EPERM); | |
2221 | } | |
2222 | ||
2223 | return net; | |
2224 | } | |
2225 | ||
4ff66cae CB |
2226 | /* Verify that rtnetlink requests do not pass additional properties |
2227 | * potentially referring to different network namespaces. | |
2228 | */ | |
2229 | static int rtnl_ensure_unique_netns(struct nlattr *tb[], | |
2230 | struct netlink_ext_ack *extack, | |
2231 | bool netns_id_only) | |
2232 | { | |
2233 | ||
2234 | if (netns_id_only) { | |
2235 | if (!tb[IFLA_NET_NS_PID] && !tb[IFLA_NET_NS_FD]) | |
2236 | return 0; | |
2237 | ||
2238 | NL_SET_ERR_MSG(extack, "specified netns attribute not supported"); | |
2239 | return -EOPNOTSUPP; | |
2240 | } | |
2241 | ||
7e4a8d5a | 2242 | if (tb[IFLA_TARGET_NETNSID] && (tb[IFLA_NET_NS_PID] || tb[IFLA_NET_NS_FD])) |
4ff66cae CB |
2243 | goto invalid_attr; |
2244 | ||
7e4a8d5a | 2245 | if (tb[IFLA_NET_NS_PID] && (tb[IFLA_TARGET_NETNSID] || tb[IFLA_NET_NS_FD])) |
4ff66cae CB |
2246 | goto invalid_attr; |
2247 | ||
7e4a8d5a | 2248 | if (tb[IFLA_NET_NS_FD] && (tb[IFLA_TARGET_NETNSID] || tb[IFLA_NET_NS_PID])) |
4ff66cae CB |
2249 | goto invalid_attr; |
2250 | ||
2251 | return 0; | |
2252 | ||
2253 | invalid_attr: | |
2254 | NL_SET_ERR_MSG(extack, "multiple netns identifying attributes specified"); | |
2255 | return -EINVAL; | |
2256 | } | |
2257 | ||
1840bb13 TG |
2258 | static int validate_linkmsg(struct net_device *dev, struct nlattr *tb[]) |
2259 | { | |
2260 | if (dev) { | |
2261 | if (tb[IFLA_ADDRESS] && | |
2262 | nla_len(tb[IFLA_ADDRESS]) < dev->addr_len) | |
2263 | return -EINVAL; | |
2264 | ||
2265 | if (tb[IFLA_BROADCAST] && | |
2266 | nla_len(tb[IFLA_BROADCAST]) < dev->addr_len) | |
2267 | return -EINVAL; | |
2268 | } | |
2269 | ||
cf7afbfe TG |
2270 | if (tb[IFLA_AF_SPEC]) { |
2271 | struct nlattr *af; | |
2272 | int rem, err; | |
2273 | ||
2274 | nla_for_each_nested(af, tb[IFLA_AF_SPEC], rem) { | |
2275 | const struct rtnl_af_ops *af_ops; | |
2276 | ||
5fa85a09 FW |
2277 | rcu_read_lock(); |
2278 | af_ops = rtnl_af_lookup(nla_type(af)); | |
2279 | if (!af_ops) { | |
2280 | rcu_read_unlock(); | |
cf7afbfe | 2281 | return -EAFNOSUPPORT; |
5fa85a09 | 2282 | } |
cf7afbfe | 2283 | |
5fa85a09 FW |
2284 | if (!af_ops->set_link_af) { |
2285 | rcu_read_unlock(); | |
cf7afbfe | 2286 | return -EOPNOTSUPP; |
5fa85a09 | 2287 | } |
cf7afbfe TG |
2288 | |
2289 | if (af_ops->validate_link_af) { | |
6d3a9a68 | 2290 | err = af_ops->validate_link_af(dev, af); |
5fa85a09 FW |
2291 | if (err < 0) { |
2292 | rcu_read_unlock(); | |
cf7afbfe | 2293 | return err; |
5fa85a09 | 2294 | } |
cf7afbfe | 2295 | } |
5fa85a09 FW |
2296 | |
2297 | rcu_read_unlock(); | |
cf7afbfe TG |
2298 | } |
2299 | } | |
2300 | ||
1840bb13 TG |
2301 | return 0; |
2302 | } | |
2303 | ||
cc8e27cc EC |
2304 | static int handle_infiniband_guid(struct net_device *dev, struct ifla_vf_guid *ivt, |
2305 | int guid_type) | |
2306 | { | |
2307 | const struct net_device_ops *ops = dev->netdev_ops; | |
2308 | ||
2309 | return ops->ndo_set_vf_guid(dev, ivt->vf, ivt->guid, guid_type); | |
2310 | } | |
2311 | ||
2312 | static int handle_vf_guid(struct net_device *dev, struct ifla_vf_guid *ivt, int guid_type) | |
2313 | { | |
2314 | if (dev->type != ARPHRD_INFINIBAND) | |
2315 | return -EOPNOTSUPP; | |
2316 | ||
2317 | return handle_infiniband_guid(dev, ivt, guid_type); | |
2318 | } | |
2319 | ||
4f7d2cdf | 2320 | static int do_setvfinfo(struct net_device *dev, struct nlattr **tb) |
c02db8c6 | 2321 | { |
c02db8c6 | 2322 | const struct net_device_ops *ops = dev->netdev_ops; |
4f7d2cdf | 2323 | int err = -EINVAL; |
c02db8c6 | 2324 | |
4f7d2cdf DB |
2325 | if (tb[IFLA_VF_MAC]) { |
2326 | struct ifla_vf_mac *ivm = nla_data(tb[IFLA_VF_MAC]); | |
01a3d796 | 2327 | |
ff08ddba DC |
2328 | if (ivm->vf >= INT_MAX) |
2329 | return -EINVAL; | |
4f7d2cdf DB |
2330 | err = -EOPNOTSUPP; |
2331 | if (ops->ndo_set_vf_mac) | |
2332 | err = ops->ndo_set_vf_mac(dev, ivm->vf, | |
2333 | ivm->mac); | |
2334 | if (err < 0) | |
2335 | return err; | |
2336 | } | |
2337 | ||
2338 | if (tb[IFLA_VF_VLAN]) { | |
2339 | struct ifla_vf_vlan *ivv = nla_data(tb[IFLA_VF_VLAN]); | |
2340 | ||
ff08ddba DC |
2341 | if (ivv->vf >= INT_MAX) |
2342 | return -EINVAL; | |
4f7d2cdf DB |
2343 | err = -EOPNOTSUPP; |
2344 | if (ops->ndo_set_vf_vlan) | |
2345 | err = ops->ndo_set_vf_vlan(dev, ivv->vf, ivv->vlan, | |
79aab093 MS |
2346 | ivv->qos, |
2347 | htons(ETH_P_8021Q)); | |
2348 | if (err < 0) | |
2349 | return err; | |
2350 | } | |
2351 | ||
2352 | if (tb[IFLA_VF_VLAN_LIST]) { | |
2353 | struct ifla_vf_vlan_info *ivvl[MAX_VLAN_LIST_LEN]; | |
2354 | struct nlattr *attr; | |
2355 | int rem, len = 0; | |
2356 | ||
2357 | err = -EOPNOTSUPP; | |
2358 | if (!ops->ndo_set_vf_vlan) | |
2359 | return err; | |
2360 | ||
2361 | nla_for_each_nested(attr, tb[IFLA_VF_VLAN_LIST], rem) { | |
2362 | if (nla_type(attr) != IFLA_VF_VLAN_INFO || | |
2363 | nla_len(attr) < NLA_HDRLEN) { | |
2364 | return -EINVAL; | |
2365 | } | |
2366 | if (len >= MAX_VLAN_LIST_LEN) | |
2367 | return -EOPNOTSUPP; | |
2368 | ivvl[len] = nla_data(attr); | |
2369 | ||
2370 | len++; | |
2371 | } | |
fa34cd94 AB |
2372 | if (len == 0) |
2373 | return -EINVAL; | |
2374 | ||
ff08ddba DC |
2375 | if (ivvl[0]->vf >= INT_MAX) |
2376 | return -EINVAL; | |
79aab093 MS |
2377 | err = ops->ndo_set_vf_vlan(dev, ivvl[0]->vf, ivvl[0]->vlan, |
2378 | ivvl[0]->qos, ivvl[0]->vlan_proto); | |
4f7d2cdf DB |
2379 | if (err < 0) |
2380 | return err; | |
c02db8c6 | 2381 | } |
4f7d2cdf DB |
2382 | |
2383 | if (tb[IFLA_VF_TX_RATE]) { | |
2384 | struct ifla_vf_tx_rate *ivt = nla_data(tb[IFLA_VF_TX_RATE]); | |
2385 | struct ifla_vf_info ivf; | |
2386 | ||
ff08ddba DC |
2387 | if (ivt->vf >= INT_MAX) |
2388 | return -EINVAL; | |
4f7d2cdf DB |
2389 | err = -EOPNOTSUPP; |
2390 | if (ops->ndo_get_vf_config) | |
2391 | err = ops->ndo_get_vf_config(dev, ivt->vf, &ivf); | |
2392 | if (err < 0) | |
2393 | return err; | |
2394 | ||
2395 | err = -EOPNOTSUPP; | |
2396 | if (ops->ndo_set_vf_rate) | |
2397 | err = ops->ndo_set_vf_rate(dev, ivt->vf, | |
2398 | ivf.min_tx_rate, | |
2399 | ivt->rate); | |
2400 | if (err < 0) | |
2401 | return err; | |
2402 | } | |
2403 | ||
2404 | if (tb[IFLA_VF_RATE]) { | |
2405 | struct ifla_vf_rate *ivt = nla_data(tb[IFLA_VF_RATE]); | |
2406 | ||
ff08ddba DC |
2407 | if (ivt->vf >= INT_MAX) |
2408 | return -EINVAL; | |
4f7d2cdf DB |
2409 | err = -EOPNOTSUPP; |
2410 | if (ops->ndo_set_vf_rate) | |
2411 | err = ops->ndo_set_vf_rate(dev, ivt->vf, | |
2412 | ivt->min_tx_rate, | |
2413 | ivt->max_tx_rate); | |
2414 | if (err < 0) | |
2415 | return err; | |
2416 | } | |
2417 | ||
2418 | if (tb[IFLA_VF_SPOOFCHK]) { | |
2419 | struct ifla_vf_spoofchk *ivs = nla_data(tb[IFLA_VF_SPOOFCHK]); | |
2420 | ||
ff08ddba DC |
2421 | if (ivs->vf >= INT_MAX) |
2422 | return -EINVAL; | |
4f7d2cdf DB |
2423 | err = -EOPNOTSUPP; |
2424 | if (ops->ndo_set_vf_spoofchk) | |
2425 | err = ops->ndo_set_vf_spoofchk(dev, ivs->vf, | |
2426 | ivs->setting); | |
2427 | if (err < 0) | |
2428 | return err; | |
2429 | } | |
2430 | ||
2431 | if (tb[IFLA_VF_LINK_STATE]) { | |
2432 | struct ifla_vf_link_state *ivl = nla_data(tb[IFLA_VF_LINK_STATE]); | |
2433 | ||
ff08ddba DC |
2434 | if (ivl->vf >= INT_MAX) |
2435 | return -EINVAL; | |
4f7d2cdf DB |
2436 | err = -EOPNOTSUPP; |
2437 | if (ops->ndo_set_vf_link_state) | |
2438 | err = ops->ndo_set_vf_link_state(dev, ivl->vf, | |
2439 | ivl->link_state); | |
2440 | if (err < 0) | |
2441 | return err; | |
2442 | } | |
2443 | ||
2444 | if (tb[IFLA_VF_RSS_QUERY_EN]) { | |
2445 | struct ifla_vf_rss_query_en *ivrssq_en; | |
2446 | ||
2447 | err = -EOPNOTSUPP; | |
2448 | ivrssq_en = nla_data(tb[IFLA_VF_RSS_QUERY_EN]); | |
ff08ddba DC |
2449 | if (ivrssq_en->vf >= INT_MAX) |
2450 | return -EINVAL; | |
4f7d2cdf DB |
2451 | if (ops->ndo_set_vf_rss_query_en) |
2452 | err = ops->ndo_set_vf_rss_query_en(dev, ivrssq_en->vf, | |
2453 | ivrssq_en->setting); | |
2454 | if (err < 0) | |
2455 | return err; | |
2456 | } | |
2457 | ||
dd461d6a HS |
2458 | if (tb[IFLA_VF_TRUST]) { |
2459 | struct ifla_vf_trust *ivt = nla_data(tb[IFLA_VF_TRUST]); | |
2460 | ||
ff08ddba DC |
2461 | if (ivt->vf >= INT_MAX) |
2462 | return -EINVAL; | |
dd461d6a HS |
2463 | err = -EOPNOTSUPP; |
2464 | if (ops->ndo_set_vf_trust) | |
2465 | err = ops->ndo_set_vf_trust(dev, ivt->vf, ivt->setting); | |
2466 | if (err < 0) | |
2467 | return err; | |
2468 | } | |
2469 | ||
cc8e27cc EC |
2470 | if (tb[IFLA_VF_IB_NODE_GUID]) { |
2471 | struct ifla_vf_guid *ivt = nla_data(tb[IFLA_VF_IB_NODE_GUID]); | |
2472 | ||
ff08ddba DC |
2473 | if (ivt->vf >= INT_MAX) |
2474 | return -EINVAL; | |
cc8e27cc EC |
2475 | if (!ops->ndo_set_vf_guid) |
2476 | return -EOPNOTSUPP; | |
cc8e27cc EC |
2477 | return handle_vf_guid(dev, ivt, IFLA_VF_IB_NODE_GUID); |
2478 | } | |
2479 | ||
2480 | if (tb[IFLA_VF_IB_PORT_GUID]) { | |
2481 | struct ifla_vf_guid *ivt = nla_data(tb[IFLA_VF_IB_PORT_GUID]); | |
2482 | ||
ff08ddba DC |
2483 | if (ivt->vf >= INT_MAX) |
2484 | return -EINVAL; | |
cc8e27cc EC |
2485 | if (!ops->ndo_set_vf_guid) |
2486 | return -EOPNOTSUPP; | |
2487 | ||
2488 | return handle_vf_guid(dev, ivt, IFLA_VF_IB_PORT_GUID); | |
2489 | } | |
2490 | ||
c02db8c6 CW |
2491 | return err; |
2492 | } | |
2493 | ||
33eaf2a6 DA |
2494 | static int do_set_master(struct net_device *dev, int ifindex, |
2495 | struct netlink_ext_ack *extack) | |
fbaec0ea | 2496 | { |
898e5061 | 2497 | struct net_device *upper_dev = netdev_master_upper_dev_get(dev); |
fbaec0ea JP |
2498 | const struct net_device_ops *ops; |
2499 | int err; | |
2500 | ||
898e5061 JP |
2501 | if (upper_dev) { |
2502 | if (upper_dev->ifindex == ifindex) | |
fbaec0ea | 2503 | return 0; |
898e5061 | 2504 | ops = upper_dev->netdev_ops; |
fbaec0ea | 2505 | if (ops->ndo_del_slave) { |
898e5061 | 2506 | err = ops->ndo_del_slave(upper_dev, dev); |
fbaec0ea JP |
2507 | if (err) |
2508 | return err; | |
2509 | } else { | |
2510 | return -EOPNOTSUPP; | |
2511 | } | |
2512 | } | |
2513 | ||
2514 | if (ifindex) { | |
898e5061 JP |
2515 | upper_dev = __dev_get_by_index(dev_net(dev), ifindex); |
2516 | if (!upper_dev) | |
fbaec0ea | 2517 | return -EINVAL; |
898e5061 | 2518 | ops = upper_dev->netdev_ops; |
fbaec0ea | 2519 | if (ops->ndo_add_slave) { |
33eaf2a6 | 2520 | err = ops->ndo_add_slave(upper_dev, dev, extack); |
fbaec0ea JP |
2521 | if (err) |
2522 | return err; | |
2523 | } else { | |
2524 | return -EOPNOTSUPP; | |
2525 | } | |
2526 | } | |
2527 | return 0; | |
2528 | } | |
2529 | ||
829eb208 RP |
2530 | static const struct nla_policy ifla_proto_down_reason_policy[IFLA_PROTO_DOWN_REASON_VALUE + 1] = { |
2531 | [IFLA_PROTO_DOWN_REASON_MASK] = { .type = NLA_U32 }, | |
2532 | [IFLA_PROTO_DOWN_REASON_VALUE] = { .type = NLA_U32 }, | |
2533 | }; | |
2534 | ||
2535 | static int do_set_proto_down(struct net_device *dev, | |
2536 | struct nlattr *nl_proto_down, | |
2537 | struct nlattr *nl_proto_down_reason, | |
2538 | struct netlink_ext_ack *extack) | |
2539 | { | |
2540 | struct nlattr *pdreason[IFLA_PROTO_DOWN_REASON_MAX + 1]; | |
2541 | const struct net_device_ops *ops = dev->netdev_ops; | |
2542 | unsigned long mask = 0; | |
2543 | u32 value; | |
2544 | bool proto_down; | |
2545 | int err; | |
2546 | ||
2547 | if (!ops->ndo_change_proto_down) { | |
2548 | NL_SET_ERR_MSG(extack, "Protodown not supported by device"); | |
2549 | return -EOPNOTSUPP; | |
2550 | } | |
2551 | ||
2552 | if (nl_proto_down_reason) { | |
2553 | err = nla_parse_nested_deprecated(pdreason, | |
2554 | IFLA_PROTO_DOWN_REASON_MAX, | |
2555 | nl_proto_down_reason, | |
2556 | ifla_proto_down_reason_policy, | |
2557 | NULL); | |
2558 | if (err < 0) | |
2559 | return err; | |
2560 | ||
2561 | if (!pdreason[IFLA_PROTO_DOWN_REASON_VALUE]) { | |
2562 | NL_SET_ERR_MSG(extack, "Invalid protodown reason value"); | |
2563 | return -EINVAL; | |
2564 | } | |
2565 | ||
2566 | value = nla_get_u32(pdreason[IFLA_PROTO_DOWN_REASON_VALUE]); | |
2567 | ||
2568 | if (pdreason[IFLA_PROTO_DOWN_REASON_MASK]) | |
2569 | mask = nla_get_u32(pdreason[IFLA_PROTO_DOWN_REASON_MASK]); | |
2570 | ||
2571 | dev_change_proto_down_reason(dev, mask, value); | |
2572 | } | |
2573 | ||
2574 | if (nl_proto_down) { | |
2575 | proto_down = nla_get_u8(nl_proto_down); | |
2576 | ||
2577 | /* Dont turn off protodown if there are active reasons */ | |
2578 | if (!proto_down && dev->proto_down_reason) { | |
2579 | NL_SET_ERR_MSG(extack, "Cannot clear protodown, active reasons"); | |
2580 | return -EBUSY; | |
2581 | } | |
2582 | err = dev_change_proto_down(dev, | |
2583 | proto_down); | |
2584 | if (err) | |
2585 | return err; | |
2586 | } | |
2587 | ||
2588 | return 0; | |
2589 | } | |
2590 | ||
90c325e3 | 2591 | #define DO_SETLINK_MODIFIED 0x01 |
ba998906 ND |
2592 | /* notify flag means notify + modified. */ |
2593 | #define DO_SETLINK_NOTIFY 0x03 | |
90f62cf3 EB |
2594 | static int do_setlink(const struct sk_buff *skb, |
2595 | struct net_device *dev, struct ifinfomsg *ifm, | |
ddf9f970 | 2596 | struct netlink_ext_ack *extack, |
90c325e3 | 2597 | struct nlattr **tb, char *ifname, int status) |
1da177e4 | 2598 | { |
d314774c | 2599 | const struct net_device_ops *ops = dev->netdev_ops; |
0157f60c | 2600 | int err; |
1da177e4 | 2601 | |
644c7eeb ED |
2602 | err = validate_linkmsg(dev, tb); |
2603 | if (err < 0) | |
2604 | return err; | |
2605 | ||
7e4a8d5a | 2606 | if (tb[IFLA_NET_NS_PID] || tb[IFLA_NET_NS_FD] || tb[IFLA_TARGET_NETNSID]) { |
eeb85a14 AV |
2607 | struct net *net; |
2608 | int new_ifindex; | |
2609 | ||
2610 | net = rtnl_link_get_net_capable(skb, dev_net(dev), | |
2611 | tb, CAP_NET_ADMIN); | |
d8a5ec67 EB |
2612 | if (IS_ERR(net)) { |
2613 | err = PTR_ERR(net); | |
2614 | goto errout; | |
2615 | } | |
7c4f63ba | 2616 | |
eeb85a14 AV |
2617 | if (tb[IFLA_NEW_IFINDEX]) |
2618 | new_ifindex = nla_get_s32(tb[IFLA_NEW_IFINDEX]); | |
2619 | else | |
2620 | new_ifindex = 0; | |
2621 | ||
0854fa82 | 2622 | err = __dev_change_net_namespace(dev, net, ifname, new_ifindex); |
d8a5ec67 EB |
2623 | put_net(net); |
2624 | if (err) | |
2625 | goto errout; | |
90c325e3 | 2626 | status |= DO_SETLINK_MODIFIED; |
d8a5ec67 EB |
2627 | } |
2628 | ||
da5e0494 | 2629 | if (tb[IFLA_MAP]) { |
1da177e4 LT |
2630 | struct rtnl_link_ifmap *u_map; |
2631 | struct ifmap k_map; | |
2632 | ||
d314774c | 2633 | if (!ops->ndo_set_config) { |
1da177e4 | 2634 | err = -EOPNOTSUPP; |
0157f60c | 2635 | goto errout; |
1da177e4 LT |
2636 | } |
2637 | ||
2638 | if (!netif_device_present(dev)) { | |
2639 | err = -ENODEV; | |
0157f60c | 2640 | goto errout; |
1da177e4 | 2641 | } |
1da177e4 | 2642 | |
da5e0494 | 2643 | u_map = nla_data(tb[IFLA_MAP]); |
1da177e4 LT |
2644 | k_map.mem_start = (unsigned long) u_map->mem_start; |
2645 | k_map.mem_end = (unsigned long) u_map->mem_end; | |
2646 | k_map.base_addr = (unsigned short) u_map->base_addr; | |
2647 | k_map.irq = (unsigned char) u_map->irq; | |
2648 | k_map.dma = (unsigned char) u_map->dma; | |
2649 | k_map.port = (unsigned char) u_map->port; | |
2650 | ||
d314774c | 2651 | err = ops->ndo_set_config(dev, &k_map); |
da5e0494 | 2652 | if (err < 0) |
0157f60c | 2653 | goto errout; |
1da177e4 | 2654 | |
ba998906 | 2655 | status |= DO_SETLINK_NOTIFY; |
1da177e4 LT |
2656 | } |
2657 | ||
da5e0494 | 2658 | if (tb[IFLA_ADDRESS]) { |
70f8e78e DM |
2659 | struct sockaddr *sa; |
2660 | int len; | |
2661 | ||
153711f9 WC |
2662 | len = sizeof(sa_family_t) + max_t(size_t, dev->addr_len, |
2663 | sizeof(*sa)); | |
70f8e78e DM |
2664 | sa = kmalloc(len, GFP_KERNEL); |
2665 | if (!sa) { | |
2666 | err = -ENOMEM; | |
0157f60c | 2667 | goto errout; |
70f8e78e DM |
2668 | } |
2669 | sa->sa_family = dev->type; | |
da5e0494 | 2670 | memcpy(sa->sa_data, nla_data(tb[IFLA_ADDRESS]), |
70f8e78e | 2671 | dev->addr_len); |
3b23a32a | 2672 | err = dev_set_mac_address_user(dev, sa, extack); |
70f8e78e | 2673 | kfree(sa); |
1da177e4 | 2674 | if (err) |
0157f60c | 2675 | goto errout; |
90c325e3 | 2676 | status |= DO_SETLINK_MODIFIED; |
1da177e4 LT |
2677 | } |
2678 | ||
da5e0494 | 2679 | if (tb[IFLA_MTU]) { |
7a4c53be | 2680 | err = dev_set_mtu_ext(dev, nla_get_u32(tb[IFLA_MTU]), extack); |
da5e0494 | 2681 | if (err < 0) |
0157f60c | 2682 | goto errout; |
90c325e3 | 2683 | status |= DO_SETLINK_MODIFIED; |
1da177e4 LT |
2684 | } |
2685 | ||
cbda10fa VD |
2686 | if (tb[IFLA_GROUP]) { |
2687 | dev_set_group(dev, nla_get_u32(tb[IFLA_GROUP])); | |
ba998906 | 2688 | status |= DO_SETLINK_NOTIFY; |
cbda10fa VD |
2689 | } |
2690 | ||
da5e0494 TG |
2691 | /* |
2692 | * Interface selected by interface index but interface | |
2693 | * name provided implies that a name change has been | |
2694 | * requested. | |
2695 | */ | |
51055be8 | 2696 | if (ifm->ifi_index > 0 && ifname[0]) { |
da5e0494 TG |
2697 | err = dev_change_name(dev, ifname); |
2698 | if (err < 0) | |
0157f60c | 2699 | goto errout; |
90c325e3 | 2700 | status |= DO_SETLINK_MODIFIED; |
1da177e4 LT |
2701 | } |
2702 | ||
0b815a1a SH |
2703 | if (tb[IFLA_IFALIAS]) { |
2704 | err = dev_set_alias(dev, nla_data(tb[IFLA_IFALIAS]), | |
2705 | nla_len(tb[IFLA_IFALIAS])); | |
2706 | if (err < 0) | |
2707 | goto errout; | |
ba998906 | 2708 | status |= DO_SETLINK_NOTIFY; |
0b815a1a SH |
2709 | } |
2710 | ||
da5e0494 TG |
2711 | if (tb[IFLA_BROADCAST]) { |
2712 | nla_memcpy(dev->broadcast, tb[IFLA_BROADCAST], dev->addr_len); | |
e7c3273e | 2713 | call_netdevice_notifiers(NETDEV_CHANGEADDR, dev); |
1da177e4 LT |
2714 | } |
2715 | ||
83b496e9 | 2716 | if (ifm->ifi_flags || ifm->ifi_change) { |
567c5e13 PM |
2717 | err = dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm), |
2718 | extack); | |
5f9021cf JB |
2719 | if (err < 0) |
2720 | goto errout; | |
83b496e9 | 2721 | } |
1da177e4 | 2722 | |
fbaec0ea | 2723 | if (tb[IFLA_MASTER]) { |
33eaf2a6 | 2724 | err = do_set_master(dev, nla_get_u32(tb[IFLA_MASTER]), extack); |
fbaec0ea JP |
2725 | if (err) |
2726 | goto errout; | |
90c325e3 | 2727 | status |= DO_SETLINK_MODIFIED; |
fbaec0ea JP |
2728 | } |
2729 | ||
9a57247f JP |
2730 | if (tb[IFLA_CARRIER]) { |
2731 | err = dev_change_carrier(dev, nla_get_u8(tb[IFLA_CARRIER])); | |
2732 | if (err) | |
2733 | goto errout; | |
90c325e3 | 2734 | status |= DO_SETLINK_MODIFIED; |
9a57247f JP |
2735 | } |
2736 | ||
5d1180fc | 2737 | if (tb[IFLA_TXQLEN]) { |
0cd29503 | 2738 | unsigned int value = nla_get_u32(tb[IFLA_TXQLEN]); |
6a643ddb CW |
2739 | |
2740 | err = dev_change_tx_queue_len(dev, value); | |
2741 | if (err) | |
2742 | goto errout; | |
2743 | status |= DO_SETLINK_MODIFIED; | |
5d1180fc | 2744 | } |
b00055aa | 2745 | |
46e6b992 SH |
2746 | if (tb[IFLA_GSO_MAX_SIZE]) { |
2747 | u32 max_size = nla_get_u32(tb[IFLA_GSO_MAX_SIZE]); | |
2748 | ||
2749 | if (max_size > GSO_MAX_SIZE) { | |
2750 | err = -EINVAL; | |
2751 | goto errout; | |
2752 | } | |
2753 | ||
2754 | if (dev->gso_max_size ^ max_size) { | |
2755 | netif_set_gso_max_size(dev, max_size); | |
2756 | status |= DO_SETLINK_MODIFIED; | |
2757 | } | |
2758 | } | |
2759 | ||
2760 | if (tb[IFLA_GSO_MAX_SEGS]) { | |
2761 | u32 max_segs = nla_get_u32(tb[IFLA_GSO_MAX_SEGS]); | |
2762 | ||
2763 | if (max_segs > GSO_MAX_SEGS) { | |
2764 | err = -EINVAL; | |
2765 | goto errout; | |
2766 | } | |
2767 | ||
2768 | if (dev->gso_max_segs ^ max_segs) { | |
2769 | dev->gso_max_segs = max_segs; | |
2770 | status |= DO_SETLINK_MODIFIED; | |
2771 | } | |
2772 | } | |
2773 | ||
da5e0494 | 2774 | if (tb[IFLA_OPERSTATE]) |
93b2d4a2 | 2775 | set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE])); |
b00055aa | 2776 | |
da5e0494 | 2777 | if (tb[IFLA_LINKMODE]) { |
1889b0e7 ND |
2778 | unsigned char value = nla_get_u8(tb[IFLA_LINKMODE]); |
2779 | ||
93b2d4a2 | 2780 | write_lock_bh(&dev_base_lock); |
1889b0e7 | 2781 | if (dev->link_mode ^ value) |
ba998906 | 2782 | status |= DO_SETLINK_NOTIFY; |
1889b0e7 | 2783 | dev->link_mode = value; |
93b2d4a2 | 2784 | write_unlock_bh(&dev_base_lock); |
b00055aa SR |
2785 | } |
2786 | ||
c02db8c6 | 2787 | if (tb[IFLA_VFINFO_LIST]) { |
4f7d2cdf | 2788 | struct nlattr *vfinfo[IFLA_VF_MAX + 1]; |
c02db8c6 CW |
2789 | struct nlattr *attr; |
2790 | int rem; | |
4f7d2cdf | 2791 | |
c02db8c6 | 2792 | nla_for_each_nested(attr, tb[IFLA_VFINFO_LIST], rem) { |
4f7d2cdf DB |
2793 | if (nla_type(attr) != IFLA_VF_INFO || |
2794 | nla_len(attr) < NLA_HDRLEN) { | |
253683bb | 2795 | err = -EINVAL; |
c02db8c6 | 2796 | goto errout; |
253683bb | 2797 | } |
8cb08174 JB |
2798 | err = nla_parse_nested_deprecated(vfinfo, IFLA_VF_MAX, |
2799 | attr, | |
2800 | ifla_vf_policy, | |
2801 | NULL); | |
4f7d2cdf DB |
2802 | if (err < 0) |
2803 | goto errout; | |
2804 | err = do_setvfinfo(dev, vfinfo); | |
c02db8c6 CW |
2805 | if (err < 0) |
2806 | goto errout; | |
ba998906 | 2807 | status |= DO_SETLINK_NOTIFY; |
c02db8c6 | 2808 | } |
ebc08a6f | 2809 | } |
1da177e4 LT |
2810 | err = 0; |
2811 | ||
57b61080 SF |
2812 | if (tb[IFLA_VF_PORTS]) { |
2813 | struct nlattr *port[IFLA_PORT_MAX+1]; | |
2814 | struct nlattr *attr; | |
2815 | int vf; | |
2816 | int rem; | |
2817 | ||
2818 | err = -EOPNOTSUPP; | |
2819 | if (!ops->ndo_set_vf_port) | |
2820 | goto errout; | |
2821 | ||
2822 | nla_for_each_nested(attr, tb[IFLA_VF_PORTS], rem) { | |
035d210f DB |
2823 | if (nla_type(attr) != IFLA_VF_PORT || |
2824 | nla_len(attr) < NLA_HDRLEN) { | |
2825 | err = -EINVAL; | |
2826 | goto errout; | |
2827 | } | |
8cb08174 JB |
2828 | err = nla_parse_nested_deprecated(port, IFLA_PORT_MAX, |
2829 | attr, | |
2830 | ifla_port_policy, | |
2831 | NULL); | |
57b61080 SF |
2832 | if (err < 0) |
2833 | goto errout; | |
2834 | if (!port[IFLA_PORT_VF]) { | |
2835 | err = -EOPNOTSUPP; | |
2836 | goto errout; | |
2837 | } | |
2838 | vf = nla_get_u32(port[IFLA_PORT_VF]); | |
2839 | err = ops->ndo_set_vf_port(dev, vf, port); | |
2840 | if (err < 0) | |
2841 | goto errout; | |
ba998906 | 2842 | status |= DO_SETLINK_NOTIFY; |
57b61080 SF |
2843 | } |
2844 | } | |
2845 | err = 0; | |
2846 | ||
2847 | if (tb[IFLA_PORT_SELF]) { | |
2848 | struct nlattr *port[IFLA_PORT_MAX+1]; | |
2849 | ||
8cb08174 JB |
2850 | err = nla_parse_nested_deprecated(port, IFLA_PORT_MAX, |
2851 | tb[IFLA_PORT_SELF], | |
2852 | ifla_port_policy, NULL); | |
57b61080 SF |
2853 | if (err < 0) |
2854 | goto errout; | |
2855 | ||
2856 | err = -EOPNOTSUPP; | |
2857 | if (ops->ndo_set_vf_port) | |
2858 | err = ops->ndo_set_vf_port(dev, PORT_SELF_VF, port); | |
2859 | if (err < 0) | |
2860 | goto errout; | |
ba998906 | 2861 | status |= DO_SETLINK_NOTIFY; |
57b61080 | 2862 | } |
f8ff182c TG |
2863 | |
2864 | if (tb[IFLA_AF_SPEC]) { | |
2865 | struct nlattr *af; | |
2866 | int rem; | |
2867 | ||
2868 | nla_for_each_nested(af, tb[IFLA_AF_SPEC], rem) { | |
2869 | const struct rtnl_af_ops *af_ops; | |
2870 | ||
5fa85a09 FW |
2871 | rcu_read_lock(); |
2872 | ||
058c8d59 | 2873 | BUG_ON(!(af_ops = rtnl_af_lookup(nla_type(af)))); |
f8ff182c | 2874 | |
3583a4e8 | 2875 | err = af_ops->set_link_af(dev, af, extack); |
5fa85a09 FW |
2876 | if (err < 0) { |
2877 | rcu_read_unlock(); | |
f8ff182c | 2878 | goto errout; |
5fa85a09 | 2879 | } |
f8ff182c | 2880 | |
5fa85a09 | 2881 | rcu_read_unlock(); |
ba998906 | 2882 | status |= DO_SETLINK_NOTIFY; |
f8ff182c TG |
2883 | } |
2884 | } | |
57b61080 SF |
2885 | err = 0; |
2886 | ||
829eb208 RP |
2887 | if (tb[IFLA_PROTO_DOWN] || tb[IFLA_PROTO_DOWN_REASON]) { |
2888 | err = do_set_proto_down(dev, tb[IFLA_PROTO_DOWN], | |
2889 | tb[IFLA_PROTO_DOWN_REASON], extack); | |
88d6378b AK |
2890 | if (err) |
2891 | goto errout; | |
2892 | status |= DO_SETLINK_NOTIFY; | |
2893 | } | |
2894 | ||
d1fdd913 BB |
2895 | if (tb[IFLA_XDP]) { |
2896 | struct nlattr *xdp[IFLA_XDP_MAX + 1]; | |
85de8576 | 2897 | u32 xdp_flags = 0; |
d1fdd913 | 2898 | |
8cb08174 JB |
2899 | err = nla_parse_nested_deprecated(xdp, IFLA_XDP_MAX, |
2900 | tb[IFLA_XDP], | |
2901 | ifla_xdp_policy, NULL); | |
d1fdd913 BB |
2902 | if (err < 0) |
2903 | goto errout; | |
2904 | ||
58038695 | 2905 | if (xdp[IFLA_XDP_ATTACHED] || xdp[IFLA_XDP_PROG_ID]) { |
262d8625 BB |
2906 | err = -EINVAL; |
2907 | goto errout; | |
2908 | } | |
85de8576 DB |
2909 | |
2910 | if (xdp[IFLA_XDP_FLAGS]) { | |
2911 | xdp_flags = nla_get_u32(xdp[IFLA_XDP_FLAGS]); | |
2912 | if (xdp_flags & ~XDP_FLAGS_MASK) { | |
2913 | err = -EINVAL; | |
2914 | goto errout; | |
2915 | } | |
ee5d032f | 2916 | if (hweight32(xdp_flags & XDP_FLAGS_MODES) > 1) { |
0489df9a DB |
2917 | err = -EINVAL; |
2918 | goto errout; | |
2919 | } | |
85de8576 DB |
2920 | } |
2921 | ||
d1fdd913 | 2922 | if (xdp[IFLA_XDP_FD]) { |
92234c8f THJ |
2923 | int expected_fd = -1; |
2924 | ||
2925 | if (xdp_flags & XDP_FLAGS_REPLACE) { | |
2926 | if (!xdp[IFLA_XDP_EXPECTED_FD]) { | |
2927 | err = -EINVAL; | |
2928 | goto errout; | |
2929 | } | |
2930 | expected_fd = | |
2931 | nla_get_s32(xdp[IFLA_XDP_EXPECTED_FD]); | |
2932 | } | |
2933 | ||
ddf9f970 | 2934 | err = dev_change_xdp_fd(dev, extack, |
85de8576 | 2935 | nla_get_s32(xdp[IFLA_XDP_FD]), |
92234c8f | 2936 | expected_fd, |
85de8576 | 2937 | xdp_flags); |
d1fdd913 BB |
2938 | if (err) |
2939 | goto errout; | |
2940 | status |= DO_SETLINK_NOTIFY; | |
2941 | } | |
2942 | } | |
2943 | ||
0157f60c | 2944 | errout: |
ba998906 | 2945 | if (status & DO_SETLINK_MODIFIED) { |
64ff90cc | 2946 | if ((status & DO_SETLINK_NOTIFY) == DO_SETLINK_NOTIFY) |
ba998906 ND |
2947 | netdev_state_change(dev); |
2948 | ||
2949 | if (err < 0) | |
2950 | 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", | |
2951 | dev->name); | |
2952 | } | |
da5e0494 | 2953 | |
0157f60c PM |
2954 | return err; |
2955 | } | |
1da177e4 | 2956 | |
cc6090e9 JP |
2957 | static struct net_device *rtnl_dev_get(struct net *net, |
2958 | struct nlattr *ifname_attr, | |
76c9ac0e | 2959 | struct nlattr *altifname_attr, |
cc6090e9 JP |
2960 | char *ifname) |
2961 | { | |
76c9ac0e | 2962 | char buffer[ALTIFNAMSIZ]; |
cc6090e9 JP |
2963 | |
2964 | if (!ifname) { | |
2965 | ifname = buffer; | |
2966 | if (ifname_attr) | |
872f6903 | 2967 | nla_strscpy(ifname, ifname_attr, IFNAMSIZ); |
76c9ac0e | 2968 | else if (altifname_attr) |
872f6903 | 2969 | nla_strscpy(ifname, altifname_attr, ALTIFNAMSIZ); |
cc6090e9 JP |
2970 | else |
2971 | return NULL; | |
2972 | } | |
2973 | ||
2974 | return __dev_get_by_name(net, ifname); | |
2975 | } | |
2976 | ||
c21ef3e3 DA |
2977 | static int rtnl_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, |
2978 | struct netlink_ext_ack *extack) | |
0157f60c | 2979 | { |
3b1e0a65 | 2980 | struct net *net = sock_net(skb->sk); |
0157f60c PM |
2981 | struct ifinfomsg *ifm; |
2982 | struct net_device *dev; | |
2983 | int err; | |
2984 | struct nlattr *tb[IFLA_MAX+1]; | |
2985 | char ifname[IFNAMSIZ]; | |
2986 | ||
8cb08174 JB |
2987 | err = nlmsg_parse_deprecated(nlh, sizeof(*ifm), tb, IFLA_MAX, |
2988 | ifla_policy, extack); | |
0157f60c PM |
2989 | if (err < 0) |
2990 | goto errout; | |
2991 | ||
4ff66cae CB |
2992 | err = rtnl_ensure_unique_netns(tb, extack, false); |
2993 | if (err < 0) | |
2994 | goto errout; | |
2995 | ||
0157f60c | 2996 | if (tb[IFLA_IFNAME]) |
872f6903 | 2997 | nla_strscpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); |
0157f60c PM |
2998 | else |
2999 | ifname[0] = '\0'; | |
3000 | ||
3001 | err = -EINVAL; | |
3002 | ifm = nlmsg_data(nlh); | |
3003 | if (ifm->ifi_index > 0) | |
a3d12891 | 3004 | dev = __dev_get_by_index(net, ifm->ifi_index); |
76c9ac0e JP |
3005 | else if (tb[IFLA_IFNAME] || tb[IFLA_ALT_IFNAME]) |
3006 | dev = rtnl_dev_get(net, NULL, tb[IFLA_ALT_IFNAME], ifname); | |
0157f60c PM |
3007 | else |
3008 | goto errout; | |
3009 | ||
3010 | if (dev == NULL) { | |
3011 | err = -ENODEV; | |
3012 | goto errout; | |
3013 | } | |
3014 | ||
ddf9f970 | 3015 | err = do_setlink(skb, dev, ifm, extack, tb, ifname, 0); |
da5e0494 | 3016 | errout: |
1da177e4 LT |
3017 | return err; |
3018 | } | |
3019 | ||
66400d54 WC |
3020 | static int rtnl_group_dellink(const struct net *net, int group) |
3021 | { | |
3022 | struct net_device *dev, *aux; | |
3023 | LIST_HEAD(list_kill); | |
3024 | bool found = false; | |
3025 | ||
3026 | if (!group) | |
3027 | return -EPERM; | |
3028 | ||
3029 | for_each_netdev(net, dev) { | |
3030 | if (dev->group == group) { | |
3031 | const struct rtnl_link_ops *ops; | |
3032 | ||
3033 | found = true; | |
3034 | ops = dev->rtnl_link_ops; | |
3035 | if (!ops || !ops->dellink) | |
3036 | return -EOPNOTSUPP; | |
3037 | } | |
3038 | } | |
3039 | ||
3040 | if (!found) | |
3041 | return -ENODEV; | |
3042 | ||
3043 | for_each_netdev_safe(net, dev, aux) { | |
3044 | if (dev->group == group) { | |
3045 | const struct rtnl_link_ops *ops; | |
3046 | ||
3047 | ops = dev->rtnl_link_ops; | |
3048 | ops->dellink(dev, &list_kill); | |
3049 | } | |
3050 | } | |
3051 | unregister_netdevice_many(&list_kill); | |
3052 | ||
3053 | return 0; | |
3054 | } | |
3055 | ||
614732ea TG |
3056 | int rtnl_delete_link(struct net_device *dev) |
3057 | { | |
3058 | const struct rtnl_link_ops *ops; | |
3059 | LIST_HEAD(list_kill); | |
3060 | ||
3061 | ops = dev->rtnl_link_ops; | |
3062 | if (!ops || !ops->dellink) | |
3063 | return -EOPNOTSUPP; | |
3064 | ||
3065 | ops->dellink(dev, &list_kill); | |
3066 | unregister_netdevice_many(&list_kill); | |
3067 | ||
3068 | return 0; | |
3069 | } | |
3070 | EXPORT_SYMBOL_GPL(rtnl_delete_link); | |
3071 | ||
c21ef3e3 DA |
3072 | static int rtnl_dellink(struct sk_buff *skb, struct nlmsghdr *nlh, |
3073 | struct netlink_ext_ack *extack) | |
38f7b870 | 3074 | { |
3b1e0a65 | 3075 | struct net *net = sock_net(skb->sk); |
b61ad68a CB |
3076 | struct net *tgt_net = net; |
3077 | struct net_device *dev = NULL; | |
38f7b870 | 3078 | struct ifinfomsg *ifm; |
38f7b870 PM |
3079 | struct nlattr *tb[IFLA_MAX+1]; |
3080 | int err; | |
b61ad68a | 3081 | int netnsid = -1; |
38f7b870 | 3082 | |
8cb08174 JB |
3083 | err = nlmsg_parse_deprecated(nlh, sizeof(*ifm), tb, IFLA_MAX, |
3084 | ifla_policy, extack); | |
38f7b870 PM |
3085 | if (err < 0) |
3086 | return err; | |
3087 | ||
4ff66cae CB |
3088 | err = rtnl_ensure_unique_netns(tb, extack, true); |
3089 | if (err < 0) | |
3090 | return err; | |
3091 | ||
7e4a8d5a CB |
3092 | if (tb[IFLA_TARGET_NETNSID]) { |
3093 | netnsid = nla_get_s32(tb[IFLA_TARGET_NETNSID]); | |
c383edc4 | 3094 | tgt_net = rtnl_get_net_ns_capable(NETLINK_CB(skb).sk, netnsid); |
b61ad68a CB |
3095 | if (IS_ERR(tgt_net)) |
3096 | return PTR_ERR(tgt_net); | |
3097 | } | |
3098 | ||
3099 | err = -EINVAL; | |
38f7b870 PM |
3100 | ifm = nlmsg_data(nlh); |
3101 | if (ifm->ifi_index > 0) | |
b61ad68a | 3102 | dev = __dev_get_by_index(tgt_net, ifm->ifi_index); |
76c9ac0e JP |
3103 | else if (tb[IFLA_IFNAME] || tb[IFLA_ALT_IFNAME]) |
3104 | dev = rtnl_dev_get(net, tb[IFLA_IFNAME], | |
3105 | tb[IFLA_ALT_IFNAME], NULL); | |
66400d54 | 3106 | else if (tb[IFLA_GROUP]) |
b61ad68a | 3107 | err = rtnl_group_dellink(tgt_net, nla_get_u32(tb[IFLA_GROUP])); |
38f7b870 | 3108 | else |
b61ad68a | 3109 | goto out; |
38f7b870 | 3110 | |
b61ad68a CB |
3111 | if (!dev) { |
3112 | if (tb[IFLA_IFNAME] || ifm->ifi_index > 0) | |
3113 | err = -ENODEV; | |
3114 | ||
3115 | goto out; | |
3116 | } | |
3117 | ||
3118 | err = rtnl_delete_link(dev); | |
38f7b870 | 3119 | |
b61ad68a CB |
3120 | out: |
3121 | if (netnsid >= 0) | |
3122 | put_net(tgt_net); | |
3123 | ||
3124 | return err; | |
38f7b870 PM |
3125 | } |
3126 | ||
3729d502 PM |
3127 | int rtnl_configure_link(struct net_device *dev, const struct ifinfomsg *ifm) |
3128 | { | |
3129 | unsigned int old_flags; | |
3130 | int err; | |
3131 | ||
3132 | old_flags = dev->flags; | |
3133 | if (ifm && (ifm->ifi_flags || ifm->ifi_change)) { | |
6d040321 PM |
3134 | err = __dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm), |
3135 | NULL); | |
3729d502 PM |
3136 | if (err < 0) |
3137 | return err; | |
3138 | } | |
3139 | ||
8d356b89 | 3140 | if (dev->rtnl_link_state == RTNL_LINK_INITIALIZED) { |
56a49d70 | 3141 | __dev_notify_flags(dev, old_flags, (old_flags ^ dev->flags)); |
8d356b89 RP |
3142 | } else { |
3143 | dev->rtnl_link_state = RTNL_LINK_INITIALIZED; | |
3144 | __dev_notify_flags(dev, old_flags, ~0U); | |
3145 | } | |
3729d502 PM |
3146 | return 0; |
3147 | } | |
3148 | EXPORT_SYMBOL(rtnl_configure_link); | |
3149 | ||
d0522f1c DA |
3150 | struct net_device *rtnl_create_link(struct net *net, const char *ifname, |
3151 | unsigned char name_assign_type, | |
3152 | const struct rtnl_link_ops *ops, | |
3153 | struct nlattr *tb[], | |
3154 | struct netlink_ext_ack *extack) | |
e7199288 | 3155 | { |
e7199288 | 3156 | struct net_device *dev; |
d40156aa JP |
3157 | unsigned int num_tx_queues = 1; |
3158 | unsigned int num_rx_queues = 1; | |
e7199288 | 3159 | |
76ff5cc9 JP |
3160 | if (tb[IFLA_NUM_TX_QUEUES]) |
3161 | num_tx_queues = nla_get_u32(tb[IFLA_NUM_TX_QUEUES]); | |
3162 | else if (ops->get_num_tx_queues) | |
d40156aa | 3163 | num_tx_queues = ops->get_num_tx_queues(); |
76ff5cc9 JP |
3164 | |
3165 | if (tb[IFLA_NUM_RX_QUEUES]) | |
3166 | num_rx_queues = nla_get_u32(tb[IFLA_NUM_RX_QUEUES]); | |
3167 | else if (ops->get_num_rx_queues) | |
d40156aa | 3168 | num_rx_queues = ops->get_num_rx_queues(); |
efacb309 | 3169 | |
d0522f1c DA |
3170 | if (num_tx_queues < 1 || num_tx_queues > 4096) { |
3171 | NL_SET_ERR_MSG(extack, "Invalid number of transmit queues"); | |
0e1d6eca | 3172 | return ERR_PTR(-EINVAL); |
d0522f1c | 3173 | } |
0e1d6eca | 3174 | |
d0522f1c DA |
3175 | if (num_rx_queues < 1 || num_rx_queues > 4096) { |
3176 | NL_SET_ERR_MSG(extack, "Invalid number of receive queues"); | |
0e1d6eca | 3177 | return ERR_PTR(-EINVAL); |
d0522f1c | 3178 | } |
0e1d6eca | 3179 | |
5517750f | 3180 | dev = alloc_netdev_mqs(ops->priv_size, ifname, name_assign_type, |
c835a677 | 3181 | ops->setup, num_tx_queues, num_rx_queues); |
e7199288 | 3182 | if (!dev) |
d1892e4e | 3183 | return ERR_PTR(-ENOMEM); |
e7199288 | 3184 | |
81adee47 EB |
3185 | dev_net_set(dev, net); |
3186 | dev->rtnl_link_ops = ops; | |
3729d502 | 3187 | dev->rtnl_link_state = RTNL_LINK_INITIALIZING; |
81adee47 | 3188 | |
d836f5c6 ED |
3189 | if (tb[IFLA_MTU]) { |
3190 | u32 mtu = nla_get_u32(tb[IFLA_MTU]); | |
3191 | int err; | |
3192 | ||
3193 | err = dev_validate_mtu(dev, mtu, extack); | |
3194 | if (err) { | |
3195 | free_netdev(dev); | |
3196 | return ERR_PTR(err); | |
3197 | } | |
3198 | dev->mtu = mtu; | |
3199 | } | |
2afb9b53 | 3200 | if (tb[IFLA_ADDRESS]) { |
e7199288 PE |
3201 | memcpy(dev->dev_addr, nla_data(tb[IFLA_ADDRESS]), |
3202 | nla_len(tb[IFLA_ADDRESS])); | |
2afb9b53 JP |
3203 | dev->addr_assign_type = NET_ADDR_SET; |
3204 | } | |
e7199288 PE |
3205 | if (tb[IFLA_BROADCAST]) |
3206 | memcpy(dev->broadcast, nla_data(tb[IFLA_BROADCAST]), | |
3207 | nla_len(tb[IFLA_BROADCAST])); | |
3208 | if (tb[IFLA_TXQLEN]) | |
3209 | dev->tx_queue_len = nla_get_u32(tb[IFLA_TXQLEN]); | |
3210 | if (tb[IFLA_OPERSTATE]) | |
93b2d4a2 | 3211 | set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE])); |
e7199288 PE |
3212 | if (tb[IFLA_LINKMODE]) |
3213 | dev->link_mode = nla_get_u8(tb[IFLA_LINKMODE]); | |
ffa934f1 PM |
3214 | if (tb[IFLA_GROUP]) |
3215 | dev_set_group(dev, nla_get_u32(tb[IFLA_GROUP])); | |
46e6b992 SH |
3216 | if (tb[IFLA_GSO_MAX_SIZE]) |
3217 | netif_set_gso_max_size(dev, nla_get_u32(tb[IFLA_GSO_MAX_SIZE])); | |
3218 | if (tb[IFLA_GSO_MAX_SEGS]) | |
a0b586fa | 3219 | dev->gso_max_segs = nla_get_u32(tb[IFLA_GSO_MAX_SEGS]); |
e7199288 PE |
3220 | |
3221 | return dev; | |
e7199288 | 3222 | } |
e0d087af | 3223 | EXPORT_SYMBOL(rtnl_create_link); |
e7199288 | 3224 | |
90f62cf3 EB |
3225 | static int rtnl_group_changelink(const struct sk_buff *skb, |
3226 | struct net *net, int group, | |
e7ed828f | 3227 | struct ifinfomsg *ifm, |
ddf9f970 | 3228 | struct netlink_ext_ack *extack, |
e7ed828f VD |
3229 | struct nlattr **tb) |
3230 | { | |
d079535d | 3231 | struct net_device *dev, *aux; |
e7ed828f VD |
3232 | int err; |
3233 | ||
d079535d | 3234 | for_each_netdev_safe(net, dev, aux) { |
e7ed828f | 3235 | if (dev->group == group) { |
ddf9f970 | 3236 | err = do_setlink(skb, dev, ifm, extack, tb, NULL, 0); |
e7ed828f VD |
3237 | if (err < 0) |
3238 | return err; | |
3239 | } | |
3240 | } | |
3241 | ||
3242 | return 0; | |
3243 | } | |
3244 | ||
a2939745 JK |
3245 | static int __rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh, |
3246 | struct nlattr **attr, struct netlink_ext_ack *extack) | |
38f7b870 | 3247 | { |
420d0318 JK |
3248 | struct nlattr *slave_attr[RTNL_SLAVE_MAX_TYPE + 1]; |
3249 | unsigned char name_assign_type = NET_NAME_USER; | |
3250 | struct nlattr *linkinfo[IFLA_INFO_MAX + 1]; | |
3251 | const struct rtnl_link_ops *m_ops = NULL; | |
420d0318 | 3252 | struct net_device *master_dev = NULL; |
3b1e0a65 | 3253 | struct net *net = sock_net(skb->sk); |
38f7b870 | 3254 | const struct rtnl_link_ops *ops; |
420d0318 JK |
3255 | struct nlattr *tb[IFLA_MAX + 1]; |
3256 | struct net *dest_net, *link_net; | |
3257 | struct nlattr **slave_data; | |
3258 | char kind[MODULE_NAME_LEN]; | |
38f7b870 PM |
3259 | struct net_device *dev; |
3260 | struct ifinfomsg *ifm; | |
38f7b870 | 3261 | char ifname[IFNAMSIZ]; |
420d0318 | 3262 | struct nlattr **data; |
38f7b870 PM |
3263 | int err; |
3264 | ||
95a5afca | 3265 | #ifdef CONFIG_MODULES |
38f7b870 | 3266 | replay: |
8072f085 | 3267 | #endif |
8cb08174 JB |
3268 | err = nlmsg_parse_deprecated(nlh, sizeof(*ifm), tb, IFLA_MAX, |
3269 | ifla_policy, extack); | |
38f7b870 PM |
3270 | if (err < 0) |
3271 | return err; | |
3272 | ||
4ff66cae CB |
3273 | err = rtnl_ensure_unique_netns(tb, extack, false); |
3274 | if (err < 0) | |
3275 | return err; | |
3276 | ||
38f7b870 | 3277 | if (tb[IFLA_IFNAME]) |
872f6903 | 3278 | nla_strscpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); |
38f7b870 PM |
3279 | else |
3280 | ifname[0] = '\0'; | |
3281 | ||
3282 | ifm = nlmsg_data(nlh); | |
3283 | if (ifm->ifi_index > 0) | |
881d966b | 3284 | dev = __dev_get_by_index(net, ifm->ifi_index); |
76c9ac0e JP |
3285 | else if (tb[IFLA_IFNAME] || tb[IFLA_ALT_IFNAME]) |
3286 | dev = rtnl_dev_get(net, NULL, tb[IFLA_ALT_IFNAME], ifname); | |
7af12cba JP |
3287 | else |
3288 | dev = NULL; | |
38f7b870 | 3289 | |
ba7d49b1 JP |
3290 | if (dev) { |
3291 | master_dev = netdev_master_upper_dev_get(dev); | |
3292 | if (master_dev) | |
3293 | m_ops = master_dev->rtnl_link_ops; | |
3294 | } | |
3295 | ||
e0d087af ED |
3296 | err = validate_linkmsg(dev, tb); |
3297 | if (err < 0) | |
1840bb13 TG |
3298 | return err; |
3299 | ||
38f7b870 | 3300 | if (tb[IFLA_LINKINFO]) { |
8cb08174 JB |
3301 | err = nla_parse_nested_deprecated(linkinfo, IFLA_INFO_MAX, |
3302 | tb[IFLA_LINKINFO], | |
3303 | ifla_info_policy, NULL); | |
38f7b870 PM |
3304 | if (err < 0) |
3305 | return err; | |
3306 | } else | |
3307 | memset(linkinfo, 0, sizeof(linkinfo)); | |
3308 | ||
3309 | if (linkinfo[IFLA_INFO_KIND]) { | |
872f6903 | 3310 | nla_strscpy(kind, linkinfo[IFLA_INFO_KIND], sizeof(kind)); |
38f7b870 PM |
3311 | ops = rtnl_link_ops_get(kind); |
3312 | } else { | |
3313 | kind[0] = '\0'; | |
3314 | ops = NULL; | |
3315 | } | |
3316 | ||
420d0318 JK |
3317 | data = NULL; |
3318 | if (ops) { | |
3319 | if (ops->maxtype > RTNL_MAX_TYPE) | |
3320 | return -EINVAL; | |
ccf8dbcd | 3321 | |
420d0318 | 3322 | if (ops->maxtype && linkinfo[IFLA_INFO_DATA]) { |
8cb08174 JB |
3323 | err = nla_parse_nested_deprecated(attr, ops->maxtype, |
3324 | linkinfo[IFLA_INFO_DATA], | |
3325 | ops->policy, extack); | |
420d0318 JK |
3326 | if (err < 0) |
3327 | return err; | |
3328 | data = attr; | |
38f7b870 | 3329 | } |
420d0318 JK |
3330 | if (ops->validate) { |
3331 | err = ops->validate(tb, data, extack); | |
3332 | if (err < 0) | |
3333 | return err; | |
3334 | } | |
3335 | } | |
38f7b870 | 3336 | |
420d0318 JK |
3337 | slave_data = NULL; |
3338 | if (m_ops) { | |
3339 | if (m_ops->slave_maxtype > RTNL_SLAVE_MAX_TYPE) | |
3340 | return -EINVAL; | |
ccf8dbcd | 3341 | |
420d0318 JK |
3342 | if (m_ops->slave_maxtype && |
3343 | linkinfo[IFLA_INFO_SLAVE_DATA]) { | |
8cb08174 JB |
3344 | err = nla_parse_nested_deprecated(slave_attr, |
3345 | m_ops->slave_maxtype, | |
3346 | linkinfo[IFLA_INFO_SLAVE_DATA], | |
3347 | m_ops->slave_policy, | |
3348 | extack); | |
420d0318 JK |
3349 | if (err < 0) |
3350 | return err; | |
3351 | slave_data = slave_attr; | |
ba7d49b1 | 3352 | } |
420d0318 | 3353 | } |
ba7d49b1 | 3354 | |
420d0318 JK |
3355 | if (dev) { |
3356 | int status = 0; | |
38f7b870 | 3357 | |
420d0318 JK |
3358 | if (nlh->nlmsg_flags & NLM_F_EXCL) |
3359 | return -EEXIST; | |
3360 | if (nlh->nlmsg_flags & NLM_F_REPLACE) | |
3361 | return -EOPNOTSUPP; | |
38f7b870 | 3362 | |
420d0318 JK |
3363 | if (linkinfo[IFLA_INFO_DATA]) { |
3364 | if (!ops || ops != dev->rtnl_link_ops || | |
3365 | !ops->changelink) | |
3366 | return -EOPNOTSUPP; | |
38f7b870 | 3367 | |
420d0318 JK |
3368 | err = ops->changelink(dev, tb, data, extack); |
3369 | if (err < 0) | |
3370 | return err; | |
3371 | status |= DO_SETLINK_NOTIFY; | |
3372 | } | |
ba7d49b1 | 3373 | |
420d0318 JK |
3374 | if (linkinfo[IFLA_INFO_SLAVE_DATA]) { |
3375 | if (!m_ops || !m_ops->slave_changelink) | |
3376 | return -EOPNOTSUPP; | |
ba7d49b1 | 3377 | |
420d0318 JK |
3378 | err = m_ops->slave_changelink(master_dev, dev, tb, |
3379 | slave_data, extack); | |
3380 | if (err < 0) | |
3381 | return err; | |
3382 | status |= DO_SETLINK_NOTIFY; | |
38f7b870 PM |
3383 | } |
3384 | ||
420d0318 JK |
3385 | return do_setlink(skb, dev, ifm, extack, tb, ifname, status); |
3386 | } | |
3387 | ||
3388 | if (!(nlh->nlmsg_flags & NLM_F_CREATE)) { | |
3389 | if (ifm->ifi_index == 0 && tb[IFLA_GROUP]) | |
3390 | return rtnl_group_changelink(skb, net, | |
ffa934f1 | 3391 | nla_get_u32(tb[IFLA_GROUP]), |
ddf9f970 | 3392 | ifm, extack, tb); |
420d0318 JK |
3393 | return -ENODEV; |
3394 | } | |
38f7b870 | 3395 | |
420d0318 JK |
3396 | if (tb[IFLA_MAP] || tb[IFLA_PROTINFO]) |
3397 | return -EOPNOTSUPP; | |
38f7b870 | 3398 | |
420d0318 | 3399 | if (!ops) { |
95a5afca | 3400 | #ifdef CONFIG_MODULES |
420d0318 JK |
3401 | if (kind[0]) { |
3402 | __rtnl_unlock(); | |
3403 | request_module("rtnl-link-%s", kind); | |
3404 | rtnl_lock(); | |
3405 | ops = rtnl_link_ops_get(kind); | |
3406 | if (ops) | |
3407 | goto replay; | |
38f7b870 | 3408 | } |
420d0318 JK |
3409 | #endif |
3410 | NL_SET_ERR_MSG(extack, "Unknown device type"); | |
3411 | return -EOPNOTSUPP; | |
3412 | } | |
38f7b870 | 3413 | |
420d0318 JK |
3414 | if (!ops->setup) |
3415 | return -EOPNOTSUPP; | |
b0ab2fab | 3416 | |
420d0318 JK |
3417 | if (!ifname[0]) { |
3418 | snprintf(ifname, IFNAMSIZ, "%s%%d", ops->kind); | |
3419 | name_assign_type = NET_NAME_ENUM; | |
3420 | } | |
e7199288 | 3421 | |
420d0318 JK |
3422 | dest_net = rtnl_link_get_net_capable(skb, net, tb, CAP_NET_ADMIN); |
3423 | if (IS_ERR(dest_net)) | |
3424 | return PTR_ERR(dest_net); | |
13ad1774 | 3425 | |
420d0318 JK |
3426 | if (tb[IFLA_LINK_NETNSID]) { |
3427 | int id = nla_get_s32(tb[IFLA_LINK_NETNSID]); | |
317f4810 | 3428 | |
420d0318 JK |
3429 | link_net = get_net_ns_by_id(dest_net, id); |
3430 | if (!link_net) { | |
3431 | NL_SET_ERR_MSG(extack, "Unknown network namespace id"); | |
3432 | err = -EINVAL; | |
9c7dafbf PE |
3433 | goto out; |
3434 | } | |
420d0318 JK |
3435 | err = -EPERM; |
3436 | if (!netlink_ns_capable(skb, link_net->user_ns, CAP_NET_ADMIN)) | |
3437 | goto out; | |
3438 | } else { | |
3439 | link_net = NULL; | |
3440 | } | |
3441 | ||
3442 | dev = rtnl_create_link(link_net ? : dest_net, ifname, | |
3443 | name_assign_type, ops, tb, extack); | |
3444 | if (IS_ERR(dev)) { | |
3445 | err = PTR_ERR(dev); | |
3446 | goto out; | |
3447 | } | |
9c7dafbf | 3448 | |
420d0318 | 3449 | dev->ifindex = ifm->ifi_index; |
9c7dafbf | 3450 | |
c269a24c | 3451 | if (ops->newlink) |
420d0318 | 3452 | err = ops->newlink(link_net ? : net, dev, tb, data, extack); |
c269a24c | 3453 | else |
420d0318 | 3454 | err = register_netdevice(dev); |
c269a24c JK |
3455 | if (err < 0) { |
3456 | free_netdev(dev); | |
3457 | goto out; | |
420d0318 | 3458 | } |
c269a24c | 3459 | |
420d0318 JK |
3460 | err = rtnl_configure_link(dev, ifm); |
3461 | if (err < 0) | |
3462 | goto out_unregister; | |
3463 | if (link_net) { | |
0854fa82 | 3464 | err = dev_change_net_namespace(dev, dest_net, ifname); |
43638900 DM |
3465 | if (err < 0) |
3466 | goto out_unregister; | |
420d0318 JK |
3467 | } |
3468 | if (tb[IFLA_MASTER]) { | |
3469 | err = do_set_master(dev, nla_get_u32(tb[IFLA_MASTER]), extack); | |
3470 | if (err) | |
3471 | goto out_unregister; | |
3472 | } | |
3729d502 | 3473 | out: |
420d0318 JK |
3474 | if (link_net) |
3475 | put_net(link_net); | |
3476 | put_net(dest_net); | |
3477 | return err; | |
43638900 | 3478 | out_unregister: |
420d0318 JK |
3479 | if (ops->newlink) { |
3480 | LIST_HEAD(list_kill); | |
43638900 | 3481 | |
420d0318 JK |
3482 | ops->dellink(dev, &list_kill); |
3483 | unregister_netdevice_many(&list_kill); | |
3484 | } else { | |
3485 | unregister_netdevice(dev); | |
38f7b870 | 3486 | } |
420d0318 | 3487 | goto out; |
38f7b870 PM |
3488 | } |
3489 | ||
a2939745 JK |
3490 | static int rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh, |
3491 | struct netlink_ext_ack *extack) | |
3492 | { | |
3493 | struct nlattr **attr; | |
3494 | int ret; | |
3495 | ||
3496 | attr = kmalloc_array(RTNL_MAX_TYPE + 1, sizeof(*attr), GFP_KERNEL); | |
3497 | if (!attr) | |
3498 | return -ENOMEM; | |
3499 | ||
3500 | ret = __rtnl_newlink(skb, nlh, attr, extack); | |
3501 | kfree(attr); | |
3502 | return ret; | |
3503 | } | |
3504 | ||
9b3757b0 JK |
3505 | static int rtnl_valid_getlink_req(struct sk_buff *skb, |
3506 | const struct nlmsghdr *nlh, | |
3507 | struct nlattr **tb, | |
3508 | struct netlink_ext_ack *extack) | |
3509 | { | |
3510 | struct ifinfomsg *ifm; | |
3511 | int i, err; | |
3512 | ||
3513 | if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*ifm))) { | |
3514 | NL_SET_ERR_MSG(extack, "Invalid header for get link"); | |
3515 | return -EINVAL; | |
3516 | } | |
3517 | ||
3518 | if (!netlink_strict_get_check(skb)) | |
8cb08174 JB |
3519 | return nlmsg_parse_deprecated(nlh, sizeof(*ifm), tb, IFLA_MAX, |
3520 | ifla_policy, extack); | |
9b3757b0 JK |
3521 | |
3522 | ifm = nlmsg_data(nlh); | |
3523 | if (ifm->__ifi_pad || ifm->ifi_type || ifm->ifi_flags || | |
3524 | ifm->ifi_change) { | |
3525 | NL_SET_ERR_MSG(extack, "Invalid values in header for get link request"); | |
3526 | return -EINVAL; | |
3527 | } | |
3528 | ||
8cb08174 JB |
3529 | err = nlmsg_parse_deprecated_strict(nlh, sizeof(*ifm), tb, IFLA_MAX, |
3530 | ifla_policy, extack); | |
9b3757b0 JK |
3531 | if (err) |
3532 | return err; | |
3533 | ||
3534 | for (i = 0; i <= IFLA_MAX; i++) { | |
3535 | if (!tb[i]) | |
3536 | continue; | |
3537 | ||
3538 | switch (i) { | |
3539 | case IFLA_IFNAME: | |
76c9ac0e | 3540 | case IFLA_ALT_IFNAME: |
9b3757b0 JK |
3541 | case IFLA_EXT_MASK: |
3542 | case IFLA_TARGET_NETNSID: | |
3543 | break; | |
3544 | default: | |
3545 | NL_SET_ERR_MSG(extack, "Unsupported attribute in get link request"); | |
3546 | return -EINVAL; | |
3547 | } | |
3548 | } | |
3549 | ||
3550 | return 0; | |
3551 | } | |
3552 | ||
c21ef3e3 DA |
3553 | static int rtnl_getlink(struct sk_buff *skb, struct nlmsghdr *nlh, |
3554 | struct netlink_ext_ack *extack) | |
711e2c33 | 3555 | { |
3b1e0a65 | 3556 | struct net *net = sock_net(skb->sk); |
79e1ad14 | 3557 | struct net *tgt_net = net; |
b60c5115 TG |
3558 | struct ifinfomsg *ifm; |
3559 | struct nlattr *tb[IFLA_MAX+1]; | |
3560 | struct net_device *dev = NULL; | |
3561 | struct sk_buff *nskb; | |
79e1ad14 | 3562 | int netnsid = -1; |
339bf98f | 3563 | int err; |
115c9b81 | 3564 | u32 ext_filter_mask = 0; |
711e2c33 | 3565 | |
9b3757b0 | 3566 | err = rtnl_valid_getlink_req(skb, nlh, tb, extack); |
b60c5115 | 3567 | if (err < 0) |
9918f230 | 3568 | return err; |
b60c5115 | 3569 | |
4ff66cae CB |
3570 | err = rtnl_ensure_unique_netns(tb, extack, true); |
3571 | if (err < 0) | |
3572 | return err; | |
3573 | ||
7e4a8d5a CB |
3574 | if (tb[IFLA_TARGET_NETNSID]) { |
3575 | netnsid = nla_get_s32(tb[IFLA_TARGET_NETNSID]); | |
c383edc4 | 3576 | tgt_net = rtnl_get_net_ns_capable(NETLINK_CB(skb).sk, netnsid); |
79e1ad14 JB |
3577 | if (IS_ERR(tgt_net)) |
3578 | return PTR_ERR(tgt_net); | |
3579 | } | |
3580 | ||
115c9b81 GR |
3581 | if (tb[IFLA_EXT_MASK]) |
3582 | ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]); | |
3583 | ||
79e1ad14 | 3584 | err = -EINVAL; |
b60c5115 | 3585 | ifm = nlmsg_data(nlh); |
a3d12891 | 3586 | if (ifm->ifi_index > 0) |
79e1ad14 | 3587 | dev = __dev_get_by_index(tgt_net, ifm->ifi_index); |
76c9ac0e JP |
3588 | else if (tb[IFLA_IFNAME] || tb[IFLA_ALT_IFNAME]) |
3589 | dev = rtnl_dev_get(tgt_net, tb[IFLA_IFNAME], | |
3590 | tb[IFLA_ALT_IFNAME], NULL); | |
a3d12891 | 3591 | else |
79e1ad14 | 3592 | goto out; |
711e2c33 | 3593 | |
79e1ad14 | 3594 | err = -ENODEV; |
a3d12891 | 3595 | if (dev == NULL) |
79e1ad14 | 3596 | goto out; |
a3d12891 | 3597 | |
79e1ad14 | 3598 | err = -ENOBUFS; |
115c9b81 | 3599 | nskb = nlmsg_new(if_nlmsg_size(dev, ext_filter_mask), GFP_KERNEL); |
a3d12891 | 3600 | if (nskb == NULL) |
79e1ad14 | 3601 | goto out; |
b60c5115 | 3602 | |
79e1ad14 JB |
3603 | err = rtnl_fill_ifinfo(nskb, dev, net, |
3604 | RTM_NEWLINK, NETLINK_CB(skb).portid, | |
3605 | nlh->nlmsg_seq, 0, 0, ext_filter_mask, | |
d4e4fdf9 | 3606 | 0, NULL, 0, netnsid, GFP_KERNEL); |
26932566 PM |
3607 | if (err < 0) { |
3608 | /* -EMSGSIZE implies BUG in if_nlmsg_size */ | |
3609 | WARN_ON(err == -EMSGSIZE); | |
3610 | kfree_skb(nskb); | |
a3d12891 | 3611 | } else |
15e47304 | 3612 | err = rtnl_unicast(nskb, net, NETLINK_CB(skb).portid); |
79e1ad14 JB |
3613 | out: |
3614 | if (netnsid >= 0) | |
3615 | put_net(tgt_net); | |
711e2c33 | 3616 | |
b60c5115 | 3617 | return err; |
711e2c33 | 3618 | } |
711e2c33 | 3619 | |
36fbf1e5 JP |
3620 | static int rtnl_alt_ifname(int cmd, struct net_device *dev, struct nlattr *attr, |
3621 | bool *changed, struct netlink_ext_ack *extack) | |
3622 | { | |
3623 | char *alt_ifname; | |
3624 | int err; | |
3625 | ||
3626 | err = nla_validate(attr, attr->nla_len, IFLA_MAX, ifla_policy, extack); | |
3627 | if (err) | |
3628 | return err; | |
3629 | ||
44bfa9c5 ED |
3630 | alt_ifname = nla_strdup(attr, GFP_KERNEL); |
3631 | if (!alt_ifname) | |
3632 | return -ENOMEM; | |
3633 | ||
36fbf1e5 | 3634 | if (cmd == RTM_NEWLINKPROP) { |
36fbf1e5 | 3635 | err = netdev_name_node_alt_create(dev, alt_ifname); |
44bfa9c5 ED |
3636 | if (!err) |
3637 | alt_ifname = NULL; | |
36fbf1e5 JP |
3638 | } else if (cmd == RTM_DELLINKPROP) { |
3639 | err = netdev_name_node_alt_destroy(dev, alt_ifname); | |
36fbf1e5 | 3640 | } else { |
44bfa9c5 ED |
3641 | WARN_ON_ONCE(1); |
3642 | err = -EINVAL; | |
36fbf1e5 JP |
3643 | } |
3644 | ||
44bfa9c5 ED |
3645 | kfree(alt_ifname); |
3646 | if (!err) | |
3647 | *changed = true; | |
3648 | return err; | |
36fbf1e5 JP |
3649 | } |
3650 | ||
3651 | static int rtnl_linkprop(int cmd, struct sk_buff *skb, struct nlmsghdr *nlh, | |
3652 | struct netlink_ext_ack *extack) | |
3653 | { | |
3654 | struct net *net = sock_net(skb->sk); | |
3655 | struct nlattr *tb[IFLA_MAX + 1]; | |
3656 | struct net_device *dev; | |
3657 | struct ifinfomsg *ifm; | |
3658 | bool changed = false; | |
3659 | struct nlattr *attr; | |
3660 | int err, rem; | |
3661 | ||
3662 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy, extack); | |
3663 | if (err) | |
3664 | return err; | |
3665 | ||
3666 | err = rtnl_ensure_unique_netns(tb, extack, true); | |
3667 | if (err) | |
3668 | return err; | |
3669 | ||
3670 | ifm = nlmsg_data(nlh); | |
cc6090e9 | 3671 | if (ifm->ifi_index > 0) |
36fbf1e5 | 3672 | dev = __dev_get_by_index(net, ifm->ifi_index); |
76c9ac0e JP |
3673 | else if (tb[IFLA_IFNAME] || tb[IFLA_ALT_IFNAME]) |
3674 | dev = rtnl_dev_get(net, tb[IFLA_IFNAME], | |
3675 | tb[IFLA_ALT_IFNAME], NULL); | |
cc6090e9 | 3676 | else |
36fbf1e5 | 3677 | return -EINVAL; |
36fbf1e5 JP |
3678 | |
3679 | if (!dev) | |
3680 | return -ENODEV; | |
3681 | ||
3682 | if (!tb[IFLA_PROP_LIST]) | |
3683 | return 0; | |
3684 | ||
3685 | nla_for_each_nested(attr, tb[IFLA_PROP_LIST], rem) { | |
3686 | switch (nla_type(attr)) { | |
3687 | case IFLA_ALT_IFNAME: | |
3688 | err = rtnl_alt_ifname(cmd, dev, attr, &changed, extack); | |
3689 | if (err) | |
3690 | return err; | |
3691 | break; | |
3692 | } | |
3693 | } | |
3694 | ||
3695 | if (changed) | |
3696 | netdev_state_change(dev); | |
3697 | return 0; | |
3698 | } | |
3699 | ||
3700 | static int rtnl_newlinkprop(struct sk_buff *skb, struct nlmsghdr *nlh, | |
3701 | struct netlink_ext_ack *extack) | |
3702 | { | |
3703 | return rtnl_linkprop(RTM_NEWLINKPROP, skb, nlh, extack); | |
3704 | } | |
3705 | ||
3706 | static int rtnl_dellinkprop(struct sk_buff *skb, struct nlmsghdr *nlh, | |
3707 | struct netlink_ext_ack *extack) | |
3708 | { | |
3709 | return rtnl_linkprop(RTM_DELLINKPROP, skb, nlh, extack); | |
3710 | } | |
3711 | ||
ebfe3c51 | 3712 | static u32 rtnl_calcit(struct sk_buff *skb, struct nlmsghdr *nlh) |
c7ac8679 | 3713 | { |
115c9b81 | 3714 | struct net *net = sock_net(skb->sk); |
ebfe3c51 | 3715 | size_t min_ifinfo_dump_size = 0; |
115c9b81 GR |
3716 | struct nlattr *tb[IFLA_MAX+1]; |
3717 | u32 ext_filter_mask = 0; | |
ebfe3c51 | 3718 | struct net_device *dev; |
e5eca6d4 MS |
3719 | int hdrlen; |
3720 | ||
3721 | /* Same kernel<->userspace interface hack as in rtnl_dump_ifinfo. */ | |
3722 | hdrlen = nlmsg_len(nlh) < sizeof(struct ifinfomsg) ? | |
3723 | sizeof(struct rtgenmsg) : sizeof(struct ifinfomsg); | |
115c9b81 | 3724 | |
8cb08174 | 3725 | if (nlmsg_parse_deprecated(nlh, hdrlen, tb, IFLA_MAX, ifla_policy, NULL) >= 0) { |
a4b64fbe ED |
3726 | if (tb[IFLA_EXT_MASK]) |
3727 | ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]); | |
3728 | } | |
115c9b81 GR |
3729 | |
3730 | if (!ext_filter_mask) | |
3731 | return NLMSG_GOODSIZE; | |
3732 | /* | |
3733 | * traverse the list of net devices and compute the minimum | |
3734 | * buffer size based upon the filter mask. | |
3735 | */ | |
6853dd48 FW |
3736 | rcu_read_lock(); |
3737 | for_each_netdev_rcu(net, dev) { | |
ebfe3c51 DZ |
3738 | min_ifinfo_dump_size = max(min_ifinfo_dump_size, |
3739 | if_nlmsg_size(dev, ext_filter_mask)); | |
115c9b81 | 3740 | } |
6853dd48 | 3741 | rcu_read_unlock(); |
115c9b81 | 3742 | |
93af2056 | 3743 | return nlmsg_total_size(min_ifinfo_dump_size); |
c7ac8679 GR |
3744 | } |
3745 | ||
42bad1da | 3746 | static int rtnl_dump_all(struct sk_buff *skb, struct netlink_callback *cb) |
1da177e4 LT |
3747 | { |
3748 | int idx; | |
3749 | int s_idx = cb->family; | |
87ccbb1f | 3750 | int type = cb->nlh->nlmsg_type - RTM_BASE; |
c63586dc | 3751 | int ret = 0; |
1da177e4 LT |
3752 | |
3753 | if (s_idx == 0) | |
3754 | s_idx = 1; | |
6853dd48 | 3755 | |
25239cee | 3756 | for (idx = 1; idx <= RTNL_FAMILY_MAX; idx++) { |
51e13685 | 3757 | struct rtnl_link __rcu **tab; |
addf9b90 | 3758 | struct rtnl_link *link; |
6853dd48 FW |
3759 | rtnl_dumpit_func dumpit; |
3760 | ||
1da177e4 LT |
3761 | if (idx < s_idx || idx == PF_PACKET) |
3762 | continue; | |
6853dd48 | 3763 | |
addf9b90 | 3764 | if (type < 0 || type >= RTM_NR_MSGTYPES) |
1da177e4 | 3765 | continue; |
6853dd48 | 3766 | |
addf9b90 FW |
3767 | tab = rcu_dereference_rtnl(rtnl_msg_handlers[idx]); |
3768 | if (!tab) | |
3769 | continue; | |
3770 | ||
51e13685 | 3771 | link = rcu_dereference_rtnl(tab[type]); |
addf9b90 FW |
3772 | if (!link) |
3773 | continue; | |
3774 | ||
3775 | dumpit = link->dumpit; | |
6853dd48 FW |
3776 | if (!dumpit) |
3777 | continue; | |
3778 | ||
0465277f | 3779 | if (idx > s_idx) { |
1da177e4 | 3780 | memset(&cb->args[0], 0, sizeof(cb->args)); |
0465277f ND |
3781 | cb->prev_seq = 0; |
3782 | cb->seq = 0; | |
3783 | } | |
c63586dc | 3784 | ret = dumpit(skb, cb); |
5e1acb4a | 3785 | if (ret) |
1da177e4 LT |
3786 | break; |
3787 | } | |
3788 | cb->family = idx; | |
3789 | ||
c63586dc | 3790 | return skb->len ? : ret; |
1da177e4 LT |
3791 | } |
3792 | ||
395eea6c | 3793 | struct sk_buff *rtmsg_ifinfo_build_skb(int type, struct net_device *dev, |
3d3ea5af | 3794 | unsigned int change, |
38e01b30 ND |
3795 | u32 event, gfp_t flags, int *new_nsid, |
3796 | int new_ifindex) | |
1da177e4 | 3797 | { |
c346dca1 | 3798 | struct net *net = dev_net(dev); |
1da177e4 | 3799 | struct sk_buff *skb; |
0ec6d3f4 | 3800 | int err = -ENOBUFS; |
c7ac8679 | 3801 | size_t if_info_size; |
1da177e4 | 3802 | |
7f294054 | 3803 | skb = nlmsg_new((if_info_size = if_nlmsg_size(dev, 0)), flags); |
0ec6d3f4 TG |
3804 | if (skb == NULL) |
3805 | goto errout; | |
1da177e4 | 3806 | |
79e1ad14 JB |
3807 | err = rtnl_fill_ifinfo(skb, dev, dev_net(dev), |
3808 | type, 0, 0, change, 0, 0, event, | |
d4e4fdf9 | 3809 | new_nsid, new_ifindex, -1, flags); |
26932566 PM |
3810 | if (err < 0) { |
3811 | /* -EMSGSIZE implies BUG in if_nlmsg_size() */ | |
3812 | WARN_ON(err == -EMSGSIZE); | |
3813 | kfree_skb(skb); | |
3814 | goto errout; | |
3815 | } | |
395eea6c | 3816 | return skb; |
0ec6d3f4 TG |
3817 | errout: |
3818 | if (err < 0) | |
4b3da706 | 3819 | rtnl_set_sk_err(net, RTNLGRP_LINK, err); |
395eea6c MB |
3820 | return NULL; |
3821 | } | |
3822 | ||
3823 | void rtmsg_ifinfo_send(struct sk_buff *skb, struct net_device *dev, gfp_t flags) | |
3824 | { | |
3825 | struct net *net = dev_net(dev); | |
3826 | ||
3827 | rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, flags); | |
3828 | } | |
3829 | ||
3d3ea5af VY |
3830 | static void rtmsg_ifinfo_event(int type, struct net_device *dev, |
3831 | unsigned int change, u32 event, | |
38e01b30 | 3832 | gfp_t flags, int *new_nsid, int new_ifindex) |
395eea6c MB |
3833 | { |
3834 | struct sk_buff *skb; | |
3835 | ||
ed2a80ab ND |
3836 | if (dev->reg_state != NETREG_REGISTERED) |
3837 | return; | |
3838 | ||
38e01b30 ND |
3839 | skb = rtmsg_ifinfo_build_skb(type, dev, change, event, flags, new_nsid, |
3840 | new_ifindex); | |
395eea6c MB |
3841 | if (skb) |
3842 | rtmsg_ifinfo_send(skb, dev, flags); | |
1da177e4 | 3843 | } |
3d3ea5af VY |
3844 | |
3845 | void rtmsg_ifinfo(int type, struct net_device *dev, unsigned int change, | |
3846 | gfp_t flags) | |
3847 | { | |
38e01b30 ND |
3848 | rtmsg_ifinfo_event(type, dev, change, rtnl_get_event(0), flags, |
3849 | NULL, 0); | |
3d3ea5af | 3850 | } |
1da177e4 | 3851 | |
6621dd29 | 3852 | void rtmsg_ifinfo_newnet(int type, struct net_device *dev, unsigned int change, |
38e01b30 | 3853 | gfp_t flags, int *new_nsid, int new_ifindex) |
6621dd29 ND |
3854 | { |
3855 | rtmsg_ifinfo_event(type, dev, change, rtnl_get_event(0), flags, | |
38e01b30 | 3856 | new_nsid, new_ifindex); |
6621dd29 ND |
3857 | } |
3858 | ||
d83b0603 JF |
3859 | static int nlmsg_populate_fdb_fill(struct sk_buff *skb, |
3860 | struct net_device *dev, | |
1e53d5bb | 3861 | u8 *addr, u16 vid, u32 pid, u32 seq, |
1c104a6b | 3862 | int type, unsigned int flags, |
b3379041 | 3863 | int nlflags, u16 ndm_state) |
d83b0603 JF |
3864 | { |
3865 | struct nlmsghdr *nlh; | |
3866 | struct ndmsg *ndm; | |
3867 | ||
1c104a6b | 3868 | nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ndm), nlflags); |
d83b0603 JF |
3869 | if (!nlh) |
3870 | return -EMSGSIZE; | |
3871 | ||
3872 | ndm = nlmsg_data(nlh); | |
3873 | ndm->ndm_family = AF_BRIDGE; | |
3874 | ndm->ndm_pad1 = 0; | |
3875 | ndm->ndm_pad2 = 0; | |
3876 | ndm->ndm_flags = flags; | |
3877 | ndm->ndm_type = 0; | |
3878 | ndm->ndm_ifindex = dev->ifindex; | |
b3379041 | 3879 | ndm->ndm_state = ndm_state; |
d83b0603 JF |
3880 | |
3881 | if (nla_put(skb, NDA_LLADDR, ETH_ALEN, addr)) | |
3882 | goto nla_put_failure; | |
1e53d5bb HS |
3883 | if (vid) |
3884 | if (nla_put(skb, NDA_VLAN, sizeof(u16), &vid)) | |
3885 | goto nla_put_failure; | |
d83b0603 | 3886 | |
053c095a JB |
3887 | nlmsg_end(skb, nlh); |
3888 | return 0; | |
d83b0603 JF |
3889 | |
3890 | nla_put_failure: | |
3891 | nlmsg_cancel(skb, nlh); | |
3892 | return -EMSGSIZE; | |
3893 | } | |
3894 | ||
3ff661c3 JF |
3895 | static inline size_t rtnl_fdb_nlmsg_size(void) |
3896 | { | |
f82ef3e1 SD |
3897 | return NLMSG_ALIGN(sizeof(struct ndmsg)) + |
3898 | nla_total_size(ETH_ALEN) + /* NDA_LLADDR */ | |
3899 | nla_total_size(sizeof(u16)) + /* NDA_VLAN */ | |
3900 | 0; | |
3ff661c3 JF |
3901 | } |
3902 | ||
b3379041 HS |
3903 | static void rtnl_fdb_notify(struct net_device *dev, u8 *addr, u16 vid, int type, |
3904 | u16 ndm_state) | |
3ff661c3 JF |
3905 | { |
3906 | struct net *net = dev_net(dev); | |
3907 | struct sk_buff *skb; | |
3908 | int err = -ENOBUFS; | |
3909 | ||
3910 | skb = nlmsg_new(rtnl_fdb_nlmsg_size(), GFP_ATOMIC); | |
3911 | if (!skb) | |
3912 | goto errout; | |
3913 | ||
1e53d5bb | 3914 | err = nlmsg_populate_fdb_fill(skb, dev, addr, vid, |
b3379041 | 3915 | 0, 0, type, NTF_SELF, 0, ndm_state); |
3ff661c3 JF |
3916 | if (err < 0) { |
3917 | kfree_skb(skb); | |
3918 | goto errout; | |
3919 | } | |
3920 | ||
3921 | rtnl_notify(skb, net, 0, RTNLGRP_NEIGH, NULL, GFP_ATOMIC); | |
3922 | return; | |
3923 | errout: | |
3924 | rtnl_set_sk_err(net, RTNLGRP_NEIGH, err); | |
3925 | } | |
3926 | ||
a986967e | 3927 | /* |
090096bf VY |
3928 | * ndo_dflt_fdb_add - default netdevice operation to add an FDB entry |
3929 | */ | |
3930 | int ndo_dflt_fdb_add(struct ndmsg *ndm, | |
3931 | struct nlattr *tb[], | |
3932 | struct net_device *dev, | |
f6f6424b | 3933 | const unsigned char *addr, u16 vid, |
090096bf VY |
3934 | u16 flags) |
3935 | { | |
3936 | int err = -EINVAL; | |
3937 | ||
3938 | /* If aging addresses are supported device will need to | |
3939 | * implement its own handler for this. | |
3940 | */ | |
3941 | if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) { | |
3942 | pr_info("%s: FDB only supports static addresses\n", dev->name); | |
3943 | return err; | |
3944 | } | |
3945 | ||
65891fea OG |
3946 | if (vid) { |
3947 | pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name); | |
3948 | return err; | |
3949 | } | |
3950 | ||
090096bf VY |
3951 | if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr)) |
3952 | err = dev_uc_add_excl(dev, addr); | |
3953 | else if (is_multicast_ether_addr(addr)) | |
3954 | err = dev_mc_add_excl(dev, addr); | |
3955 | ||
3956 | /* Only return duplicate errors if NLM_F_EXCL is set */ | |
3957 | if (err == -EEXIST && !(flags & NLM_F_EXCL)) | |
3958 | err = 0; | |
3959 | ||
3960 | return err; | |
3961 | } | |
3962 | EXPORT_SYMBOL(ndo_dflt_fdb_add); | |
3963 | ||
b88d12e4 FW |
3964 | static int fdb_vid_parse(struct nlattr *vlan_attr, u16 *p_vid, |
3965 | struct netlink_ext_ack *extack) | |
f6f6424b JP |
3966 | { |
3967 | u16 vid = 0; | |
3968 | ||
3969 | if (vlan_attr) { | |
3970 | if (nla_len(vlan_attr) != sizeof(u16)) { | |
b88d12e4 | 3971 | NL_SET_ERR_MSG(extack, "invalid vlan attribute size"); |
f6f6424b JP |
3972 | return -EINVAL; |
3973 | } | |
3974 | ||
3975 | vid = nla_get_u16(vlan_attr); | |
3976 | ||
3977 | if (!vid || vid >= VLAN_VID_MASK) { | |
b88d12e4 | 3978 | NL_SET_ERR_MSG(extack, "invalid vlan id"); |
f6f6424b JP |
3979 | return -EINVAL; |
3980 | } | |
3981 | } | |
3982 | *p_vid = vid; | |
3983 | return 0; | |
3984 | } | |
3985 | ||
c21ef3e3 DA |
3986 | static int rtnl_fdb_add(struct sk_buff *skb, struct nlmsghdr *nlh, |
3987 | struct netlink_ext_ack *extack) | |
77162022 JF |
3988 | { |
3989 | struct net *net = sock_net(skb->sk); | |
77162022 JF |
3990 | struct ndmsg *ndm; |
3991 | struct nlattr *tb[NDA_MAX+1]; | |
3992 | struct net_device *dev; | |
3993 | u8 *addr; | |
f6f6424b | 3994 | u16 vid; |
77162022 JF |
3995 | int err; |
3996 | ||
8cb08174 JB |
3997 | err = nlmsg_parse_deprecated(nlh, sizeof(*ndm), tb, NDA_MAX, NULL, |
3998 | extack); | |
77162022 JF |
3999 | if (err < 0) |
4000 | return err; | |
4001 | ||
4002 | ndm = nlmsg_data(nlh); | |
4003 | if (ndm->ndm_ifindex == 0) { | |
b88d12e4 | 4004 | NL_SET_ERR_MSG(extack, "invalid ifindex"); |
77162022 JF |
4005 | return -EINVAL; |
4006 | } | |
4007 | ||
4008 | dev = __dev_get_by_index(net, ndm->ndm_ifindex); | |
4009 | if (dev == NULL) { | |
b88d12e4 | 4010 | NL_SET_ERR_MSG(extack, "unknown ifindex"); |
77162022 JF |
4011 | return -ENODEV; |
4012 | } | |
4013 | ||
4014 | if (!tb[NDA_LLADDR] || nla_len(tb[NDA_LLADDR]) != ETH_ALEN) { | |
b88d12e4 | 4015 | NL_SET_ERR_MSG(extack, "invalid address"); |
77162022 JF |
4016 | return -EINVAL; |
4017 | } | |
4018 | ||
da715775 IS |
4019 | if (dev->type != ARPHRD_ETHER) { |
4020 | NL_SET_ERR_MSG(extack, "FDB add only supported for Ethernet devices"); | |
4021 | return -EINVAL; | |
4022 | } | |
4023 | ||
77162022 | 4024 | addr = nla_data(tb[NDA_LLADDR]); |
77162022 | 4025 | |
b88d12e4 | 4026 | err = fdb_vid_parse(tb[NDA_VLAN], &vid, extack); |
f6f6424b JP |
4027 | if (err) |
4028 | return err; | |
4029 | ||
77162022 JF |
4030 | err = -EOPNOTSUPP; |
4031 | ||
4032 | /* Support fdb on master device the net/bridge default case */ | |
4033 | if ((!ndm->ndm_flags || ndm->ndm_flags & NTF_MASTER) && | |
2e92a2d0 | 4034 | netif_is_bridge_port(dev)) { |
898e5061 JP |
4035 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
4036 | const struct net_device_ops *ops = br_dev->netdev_ops; | |
4037 | ||
f6f6424b | 4038 | err = ops->ndo_fdb_add(ndm, tb, dev, addr, vid, |
87b0984e | 4039 | nlh->nlmsg_flags, extack); |
77162022 JF |
4040 | if (err) |
4041 | goto out; | |
4042 | else | |
4043 | ndm->ndm_flags &= ~NTF_MASTER; | |
4044 | } | |
4045 | ||
4046 | /* Embedded bridge, macvlan, and any other device support */ | |
090096bf VY |
4047 | if ((ndm->ndm_flags & NTF_SELF)) { |
4048 | if (dev->netdev_ops->ndo_fdb_add) | |
4049 | err = dev->netdev_ops->ndo_fdb_add(ndm, tb, dev, addr, | |
f6f6424b | 4050 | vid, |
87b0984e PM |
4051 | nlh->nlmsg_flags, |
4052 | extack); | |
090096bf | 4053 | else |
f6f6424b | 4054 | err = ndo_dflt_fdb_add(ndm, tb, dev, addr, vid, |
090096bf | 4055 | nlh->nlmsg_flags); |
77162022 | 4056 | |
3ff661c3 | 4057 | if (!err) { |
b3379041 HS |
4058 | rtnl_fdb_notify(dev, addr, vid, RTM_NEWNEIGH, |
4059 | ndm->ndm_state); | |
77162022 | 4060 | ndm->ndm_flags &= ~NTF_SELF; |
3ff661c3 | 4061 | } |
77162022 JF |
4062 | } |
4063 | out: | |
4064 | return err; | |
4065 | } | |
4066 | ||
a986967e | 4067 | /* |
090096bf VY |
4068 | * ndo_dflt_fdb_del - default netdevice operation to delete an FDB entry |
4069 | */ | |
4070 | int ndo_dflt_fdb_del(struct ndmsg *ndm, | |
4071 | struct nlattr *tb[], | |
4072 | struct net_device *dev, | |
f6f6424b | 4073 | const unsigned char *addr, u16 vid) |
090096bf | 4074 | { |
c8a89c4a | 4075 | int err = -EINVAL; |
090096bf VY |
4076 | |
4077 | /* If aging addresses are supported device will need to | |
4078 | * implement its own handler for this. | |
4079 | */ | |
64535993 | 4080 | if (!(ndm->ndm_state & NUD_PERMANENT)) { |
090096bf | 4081 | pr_info("%s: FDB only supports static addresses\n", dev->name); |
c8a89c4a | 4082 | return err; |
090096bf VY |
4083 | } |
4084 | ||
4085 | if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr)) | |
4086 | err = dev_uc_del(dev, addr); | |
4087 | else if (is_multicast_ether_addr(addr)) | |
4088 | err = dev_mc_del(dev, addr); | |
090096bf VY |
4089 | |
4090 | return err; | |
4091 | } | |
4092 | EXPORT_SYMBOL(ndo_dflt_fdb_del); | |
4093 | ||
c21ef3e3 DA |
4094 | static int rtnl_fdb_del(struct sk_buff *skb, struct nlmsghdr *nlh, |
4095 | struct netlink_ext_ack *extack) | |
77162022 JF |
4096 | { |
4097 | struct net *net = sock_net(skb->sk); | |
4098 | struct ndmsg *ndm; | |
1690be63 | 4099 | struct nlattr *tb[NDA_MAX+1]; |
77162022 | 4100 | struct net_device *dev; |
77162022 | 4101 | __u8 *addr; |
7d311801 | 4102 | int err; |
f6f6424b | 4103 | u16 vid; |
77162022 | 4104 | |
90f62cf3 | 4105 | if (!netlink_capable(skb, CAP_NET_ADMIN)) |
1690be63 VY |
4106 | return -EPERM; |
4107 | ||
8cb08174 JB |
4108 | err = nlmsg_parse_deprecated(nlh, sizeof(*ndm), tb, NDA_MAX, NULL, |
4109 | extack); | |
1690be63 VY |
4110 | if (err < 0) |
4111 | return err; | |
77162022 JF |
4112 | |
4113 | ndm = nlmsg_data(nlh); | |
4114 | if (ndm->ndm_ifindex == 0) { | |
b88d12e4 | 4115 | NL_SET_ERR_MSG(extack, "invalid ifindex"); |
77162022 JF |
4116 | return -EINVAL; |
4117 | } | |
4118 | ||
4119 | dev = __dev_get_by_index(net, ndm->ndm_ifindex); | |
4120 | if (dev == NULL) { | |
b88d12e4 | 4121 | NL_SET_ERR_MSG(extack, "unknown ifindex"); |
77162022 JF |
4122 | return -ENODEV; |
4123 | } | |
4124 | ||
1690be63 | 4125 | if (!tb[NDA_LLADDR] || nla_len(tb[NDA_LLADDR]) != ETH_ALEN) { |
b88d12e4 | 4126 | NL_SET_ERR_MSG(extack, "invalid address"); |
1690be63 VY |
4127 | return -EINVAL; |
4128 | } | |
4129 | ||
da715775 IS |
4130 | if (dev->type != ARPHRD_ETHER) { |
4131 | NL_SET_ERR_MSG(extack, "FDB delete only supported for Ethernet devices"); | |
4132 | return -EINVAL; | |
4133 | } | |
4134 | ||
1690be63 | 4135 | addr = nla_data(tb[NDA_LLADDR]); |
77162022 | 4136 | |
b88d12e4 | 4137 | err = fdb_vid_parse(tb[NDA_VLAN], &vid, extack); |
f6f6424b JP |
4138 | if (err) |
4139 | return err; | |
4140 | ||
77162022 JF |
4141 | err = -EOPNOTSUPP; |
4142 | ||
4143 | /* Support fdb on master device the net/bridge default case */ | |
4144 | if ((!ndm->ndm_flags || ndm->ndm_flags & NTF_MASTER) && | |
2e92a2d0 | 4145 | netif_is_bridge_port(dev)) { |
898e5061 JP |
4146 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
4147 | const struct net_device_ops *ops = br_dev->netdev_ops; | |
77162022 | 4148 | |
898e5061 | 4149 | if (ops->ndo_fdb_del) |
f6f6424b | 4150 | err = ops->ndo_fdb_del(ndm, tb, dev, addr, vid); |
77162022 JF |
4151 | |
4152 | if (err) | |
4153 | goto out; | |
4154 | else | |
4155 | ndm->ndm_flags &= ~NTF_MASTER; | |
4156 | } | |
4157 | ||
4158 | /* Embedded bridge, macvlan, and any other device support */ | |
090096bf VY |
4159 | if (ndm->ndm_flags & NTF_SELF) { |
4160 | if (dev->netdev_ops->ndo_fdb_del) | |
f6f6424b JP |
4161 | err = dev->netdev_ops->ndo_fdb_del(ndm, tb, dev, addr, |
4162 | vid); | |
090096bf | 4163 | else |
f6f6424b | 4164 | err = ndo_dflt_fdb_del(ndm, tb, dev, addr, vid); |
77162022 | 4165 | |
3ff661c3 | 4166 | if (!err) { |
b3379041 HS |
4167 | rtnl_fdb_notify(dev, addr, vid, RTM_DELNEIGH, |
4168 | ndm->ndm_state); | |
77162022 | 4169 | ndm->ndm_flags &= ~NTF_SELF; |
3ff661c3 | 4170 | } |
77162022 JF |
4171 | } |
4172 | out: | |
4173 | return err; | |
4174 | } | |
4175 | ||
d83b0603 JF |
4176 | static int nlmsg_populate_fdb(struct sk_buff *skb, |
4177 | struct netlink_callback *cb, | |
4178 | struct net_device *dev, | |
4179 | int *idx, | |
4180 | struct netdev_hw_addr_list *list) | |
4181 | { | |
4182 | struct netdev_hw_addr *ha; | |
4183 | int err; | |
15e47304 | 4184 | u32 portid, seq; |
d83b0603 | 4185 | |
15e47304 | 4186 | portid = NETLINK_CB(cb->skb).portid; |
d83b0603 JF |
4187 | seq = cb->nlh->nlmsg_seq; |
4188 | ||
4189 | list_for_each_entry(ha, &list->list, list) { | |
d297653d | 4190 | if (*idx < cb->args[2]) |
d83b0603 JF |
4191 | goto skip; |
4192 | ||
1e53d5bb | 4193 | err = nlmsg_populate_fdb_fill(skb, dev, ha->addr, 0, |
a7a558fe | 4194 | portid, seq, |
1c104a6b | 4195 | RTM_NEWNEIGH, NTF_SELF, |
b3379041 | 4196 | NLM_F_MULTI, NUD_PERMANENT); |
d83b0603 JF |
4197 | if (err < 0) |
4198 | return err; | |
4199 | skip: | |
4200 | *idx += 1; | |
4201 | } | |
4202 | return 0; | |
4203 | } | |
4204 | ||
4205 | /** | |
2c53040f | 4206 | * ndo_dflt_fdb_dump - default netdevice operation to dump an FDB table. |
a986967e BVA |
4207 | * @skb: socket buffer to store message in |
4208 | * @cb: netlink callback | |
d83b0603 | 4209 | * @dev: netdevice |
a986967e BVA |
4210 | * @filter_dev: ignored |
4211 | * @idx: the number of FDB table entries dumped is added to *@idx | |
d83b0603 JF |
4212 | * |
4213 | * Default netdevice operation to dump the existing unicast address list. | |
91f3e7b1 | 4214 | * Returns number of addresses from list put in skb. |
d83b0603 JF |
4215 | */ |
4216 | int ndo_dflt_fdb_dump(struct sk_buff *skb, | |
4217 | struct netlink_callback *cb, | |
4218 | struct net_device *dev, | |
5d5eacb3 | 4219 | struct net_device *filter_dev, |
d297653d | 4220 | int *idx) |
d83b0603 JF |
4221 | { |
4222 | int err; | |
4223 | ||
68883893 ED |
4224 | if (dev->type != ARPHRD_ETHER) |
4225 | return -EINVAL; | |
4226 | ||
d83b0603 | 4227 | netif_addr_lock_bh(dev); |
d297653d | 4228 | err = nlmsg_populate_fdb(skb, cb, dev, idx, &dev->uc); |
d83b0603 JF |
4229 | if (err) |
4230 | goto out; | |
2934c9db | 4231 | err = nlmsg_populate_fdb(skb, cb, dev, idx, &dev->mc); |
d83b0603 JF |
4232 | out: |
4233 | netif_addr_unlock_bh(dev); | |
d297653d | 4234 | return err; |
d83b0603 JF |
4235 | } |
4236 | EXPORT_SYMBOL(ndo_dflt_fdb_dump); | |
4237 | ||
8c6e137f DA |
4238 | static int valid_fdb_dump_strict(const struct nlmsghdr *nlh, |
4239 | int *br_idx, int *brport_idx, | |
4240 | struct netlink_ext_ack *extack) | |
4241 | { | |
4242 | struct nlattr *tb[NDA_MAX + 1]; | |
4243 | struct ndmsg *ndm; | |
4244 | int err, i; | |
4245 | ||
4246 | if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*ndm))) { | |
4247 | NL_SET_ERR_MSG(extack, "Invalid header for fdb dump request"); | |
4248 | return -EINVAL; | |
4249 | } | |
4250 | ||
4251 | ndm = nlmsg_data(nlh); | |
4252 | if (ndm->ndm_pad1 || ndm->ndm_pad2 || ndm->ndm_state || | |
4253 | ndm->ndm_flags || ndm->ndm_type) { | |
8b73018f | 4254 | NL_SET_ERR_MSG(extack, "Invalid values in header for fdb dump request"); |
8c6e137f DA |
4255 | return -EINVAL; |
4256 | } | |
4257 | ||
8cb08174 JB |
4258 | err = nlmsg_parse_deprecated_strict(nlh, sizeof(struct ndmsg), tb, |
4259 | NDA_MAX, NULL, extack); | |
8c6e137f DA |
4260 | if (err < 0) |
4261 | return err; | |
4262 | ||
4263 | *brport_idx = ndm->ndm_ifindex; | |
4264 | for (i = 0; i <= NDA_MAX; ++i) { | |
4265 | if (!tb[i]) | |
4266 | continue; | |
4267 | ||
4268 | switch (i) { | |
4269 | case NDA_IFINDEX: | |
4270 | if (nla_len(tb[i]) != sizeof(u32)) { | |
4271 | NL_SET_ERR_MSG(extack, "Invalid IFINDEX attribute in fdb dump request"); | |
4272 | return -EINVAL; | |
4273 | } | |
4274 | *brport_idx = nla_get_u32(tb[NDA_IFINDEX]); | |
4275 | break; | |
4276 | case NDA_MASTER: | |
4277 | if (nla_len(tb[i]) != sizeof(u32)) { | |
4278 | NL_SET_ERR_MSG(extack, "Invalid MASTER attribute in fdb dump request"); | |
4279 | return -EINVAL; | |
4280 | } | |
4281 | *br_idx = nla_get_u32(tb[NDA_MASTER]); | |
4282 | break; | |
4283 | default: | |
4284 | NL_SET_ERR_MSG(extack, "Unsupported attribute in fdb dump request"); | |
4285 | return -EINVAL; | |
4286 | } | |
4287 | } | |
4288 | ||
4289 | return 0; | |
4290 | } | |
4291 | ||
8dfbda19 DA |
4292 | static int valid_fdb_dump_legacy(const struct nlmsghdr *nlh, |
4293 | int *br_idx, int *brport_idx, | |
4294 | struct netlink_ext_ack *extack) | |
77162022 | 4295 | { |
5e6d2435 | 4296 | struct nlattr *tb[IFLA_MAX+1]; |
8dfbda19 | 4297 | int err; |
5e6d2435 | 4298 | |
bd961c9b MFO |
4299 | /* A hack to preserve kernel<->userspace interface. |
4300 | * Before Linux v4.12 this code accepted ndmsg since iproute2 v3.3.0. | |
4301 | * However, ndmsg is shorter than ifinfomsg thus nlmsg_parse() bails. | |
4302 | * So, check for ndmsg with an optional u32 attribute (not used here). | |
4303 | * Fortunately these sizes don't conflict with the size of ifinfomsg | |
4304 | * with an optional attribute. | |
4305 | */ | |
8dfbda19 DA |
4306 | if (nlmsg_len(nlh) != sizeof(struct ndmsg) && |
4307 | (nlmsg_len(nlh) != sizeof(struct ndmsg) + | |
bd961c9b | 4308 | nla_attr_size(sizeof(u32)))) { |
4565d7e5 DA |
4309 | struct ifinfomsg *ifm; |
4310 | ||
8cb08174 JB |
4311 | err = nlmsg_parse_deprecated(nlh, sizeof(struct ifinfomsg), |
4312 | tb, IFLA_MAX, ifla_policy, | |
4313 | extack); | |
bd961c9b MFO |
4314 | if (err < 0) { |
4315 | return -EINVAL; | |
4316 | } else if (err == 0) { | |
4317 | if (tb[IFLA_MASTER]) | |
8dfbda19 | 4318 | *br_idx = nla_get_u32(tb[IFLA_MASTER]); |
bd961c9b | 4319 | } |
5e6d2435 | 4320 | |
4565d7e5 | 4321 | ifm = nlmsg_data(nlh); |
8dfbda19 | 4322 | *brport_idx = ifm->ifi_index; |
bd961c9b | 4323 | } |
8dfbda19 DA |
4324 | return 0; |
4325 | } | |
4326 | ||
4327 | static int rtnl_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb) | |
4328 | { | |
4329 | struct net_device *dev; | |
4330 | struct net_device *br_dev = NULL; | |
4331 | const struct net_device_ops *ops = NULL; | |
4332 | const struct net_device_ops *cops = NULL; | |
4333 | struct net *net = sock_net(skb->sk); | |
4334 | struct hlist_head *head; | |
4335 | int brport_idx = 0; | |
4336 | int br_idx = 0; | |
4337 | int h, s_h; | |
4338 | int idx = 0, s_idx; | |
4339 | int err = 0; | |
4340 | int fidx = 0; | |
4341 | ||
8c6e137f DA |
4342 | if (cb->strict_check) |
4343 | err = valid_fdb_dump_strict(cb->nlh, &br_idx, &brport_idx, | |
4344 | cb->extack); | |
4345 | else | |
4346 | err = valid_fdb_dump_legacy(cb->nlh, &br_idx, &brport_idx, | |
4347 | cb->extack); | |
8dfbda19 DA |
4348 | if (err < 0) |
4349 | return err; | |
5e6d2435 JHS |
4350 | |
4351 | if (br_idx) { | |
4352 | br_dev = __dev_get_by_index(net, br_idx); | |
4353 | if (!br_dev) | |
4354 | return -ENODEV; | |
4355 | ||
4356 | ops = br_dev->netdev_ops; | |
5e6d2435 JHS |
4357 | } |
4358 | ||
d297653d RP |
4359 | s_h = cb->args[0]; |
4360 | s_idx = cb->args[1]; | |
5e6d2435 | 4361 | |
d297653d RP |
4362 | for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) { |
4363 | idx = 0; | |
4364 | head = &net->dev_index_head[h]; | |
4365 | hlist_for_each_entry(dev, head, index_hlist) { | |
5e6d2435 | 4366 | |
d297653d | 4367 | if (brport_idx && (dev->ifindex != brport_idx)) |
5e6d2435 JHS |
4368 | continue; |
4369 | ||
d297653d | 4370 | if (!br_idx) { /* user did not specify a specific bridge */ |
2e92a2d0 | 4371 | if (netif_is_bridge_port(dev)) { |
d297653d RP |
4372 | br_dev = netdev_master_upper_dev_get(dev); |
4373 | cops = br_dev->netdev_ops; | |
4374 | } | |
4375 | } else { | |
4376 | if (dev != br_dev && | |
2e92a2d0 | 4377 | !netif_is_bridge_port(dev)) |
d297653d | 4378 | continue; |
5e6d2435 | 4379 | |
d297653d RP |
4380 | if (br_dev != netdev_master_upper_dev_get(dev) && |
4381 | !(dev->priv_flags & IFF_EBRIDGE)) | |
4382 | continue; | |
4383 | cops = ops; | |
4384 | } | |
77162022 | 4385 | |
d297653d RP |
4386 | if (idx < s_idx) |
4387 | goto cont; | |
77162022 | 4388 | |
2e92a2d0 | 4389 | if (netif_is_bridge_port(dev)) { |
d297653d RP |
4390 | if (cops && cops->ndo_fdb_dump) { |
4391 | err = cops->ndo_fdb_dump(skb, cb, | |
4392 | br_dev, dev, | |
4393 | &fidx); | |
4394 | if (err == -EMSGSIZE) | |
4395 | goto out; | |
4396 | } | |
4397 | } | |
5e6d2435 | 4398 | |
d297653d RP |
4399 | if (dev->netdev_ops->ndo_fdb_dump) |
4400 | err = dev->netdev_ops->ndo_fdb_dump(skb, cb, | |
4401 | dev, NULL, | |
4402 | &fidx); | |
4403 | else | |
4404 | err = ndo_dflt_fdb_dump(skb, cb, dev, NULL, | |
4405 | &fidx); | |
4406 | if (err == -EMSGSIZE) | |
4407 | goto out; | |
4408 | ||
4409 | cops = NULL; | |
4410 | ||
4411 | /* reset fdb offset to 0 for rest of the interfaces */ | |
4412 | cb->args[2] = 0; | |
4413 | fidx = 0; | |
4414 | cont: | |
4415 | idx++; | |
4416 | } | |
77162022 | 4417 | } |
77162022 | 4418 | |
d297653d RP |
4419 | out: |
4420 | cb->args[0] = h; | |
4421 | cb->args[1] = idx; | |
4422 | cb->args[2] = fidx; | |
4423 | ||
77162022 JF |
4424 | return skb->len; |
4425 | } | |
4426 | ||
5b2f94b2 RP |
4427 | static int valid_fdb_get_strict(const struct nlmsghdr *nlh, |
4428 | struct nlattr **tb, u8 *ndm_flags, | |
4429 | int *br_idx, int *brport_idx, u8 **addr, | |
4430 | u16 *vid, struct netlink_ext_ack *extack) | |
4431 | { | |
4432 | struct ndmsg *ndm; | |
4433 | int err, i; | |
4434 | ||
4435 | if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*ndm))) { | |
4436 | NL_SET_ERR_MSG(extack, "Invalid header for fdb get request"); | |
4437 | return -EINVAL; | |
4438 | } | |
4439 | ||
4440 | ndm = nlmsg_data(nlh); | |
4441 | if (ndm->ndm_pad1 || ndm->ndm_pad2 || ndm->ndm_state || | |
4442 | ndm->ndm_type) { | |
4443 | NL_SET_ERR_MSG(extack, "Invalid values in header for fdb get request"); | |
4444 | return -EINVAL; | |
4445 | } | |
4446 | ||
4447 | if (ndm->ndm_flags & ~(NTF_MASTER | NTF_SELF)) { | |
4448 | NL_SET_ERR_MSG(extack, "Invalid flags in header for fdb get request"); | |
4449 | return -EINVAL; | |
4450 | } | |
4451 | ||
8cb08174 JB |
4452 | err = nlmsg_parse_deprecated_strict(nlh, sizeof(struct ndmsg), tb, |
4453 | NDA_MAX, nda_policy, extack); | |
5b2f94b2 RP |
4454 | if (err < 0) |
4455 | return err; | |
4456 | ||
4457 | *ndm_flags = ndm->ndm_flags; | |
4458 | *brport_idx = ndm->ndm_ifindex; | |
4459 | for (i = 0; i <= NDA_MAX; ++i) { | |
4460 | if (!tb[i]) | |
4461 | continue; | |
4462 | ||
4463 | switch (i) { | |
4464 | case NDA_MASTER: | |
4465 | *br_idx = nla_get_u32(tb[i]); | |
4466 | break; | |
4467 | case NDA_LLADDR: | |
4468 | if (nla_len(tb[i]) != ETH_ALEN) { | |
4469 | NL_SET_ERR_MSG(extack, "Invalid address in fdb get request"); | |
4470 | return -EINVAL; | |
4471 | } | |
4472 | *addr = nla_data(tb[i]); | |
4473 | break; | |
4474 | case NDA_VLAN: | |
4475 | err = fdb_vid_parse(tb[i], vid, extack); | |
4476 | if (err) | |
4477 | return err; | |
4478 | break; | |
4479 | case NDA_VNI: | |
4480 | break; | |
4481 | default: | |
4482 | NL_SET_ERR_MSG(extack, "Unsupported attribute in fdb get request"); | |
4483 | return -EINVAL; | |
4484 | } | |
4485 | } | |
4486 | ||
4487 | return 0; | |
4488 | } | |
4489 | ||
4490 | static int rtnl_fdb_get(struct sk_buff *in_skb, struct nlmsghdr *nlh, | |
4491 | struct netlink_ext_ack *extack) | |
4492 | { | |
4493 | struct net_device *dev = NULL, *br_dev = NULL; | |
4494 | const struct net_device_ops *ops = NULL; | |
4495 | struct net *net = sock_net(in_skb->sk); | |
4496 | struct nlattr *tb[NDA_MAX + 1]; | |
4497 | struct sk_buff *skb; | |
4498 | int brport_idx = 0; | |
4499 | u8 ndm_flags = 0; | |
4500 | int br_idx = 0; | |
4501 | u8 *addr = NULL; | |
4502 | u16 vid = 0; | |
4503 | int err; | |
4504 | ||
4505 | err = valid_fdb_get_strict(nlh, tb, &ndm_flags, &br_idx, | |
4506 | &brport_idx, &addr, &vid, extack); | |
4507 | if (err < 0) | |
4508 | return err; | |
4509 | ||
f989d03e NA |
4510 | if (!addr) { |
4511 | NL_SET_ERR_MSG(extack, "Missing lookup address for fdb get request"); | |
4512 | return -EINVAL; | |
4513 | } | |
4514 | ||
5b2f94b2 RP |
4515 | if (brport_idx) { |
4516 | dev = __dev_get_by_index(net, brport_idx); | |
4517 | if (!dev) { | |
4518 | NL_SET_ERR_MSG(extack, "Unknown device ifindex"); | |
4519 | return -ENODEV; | |
4520 | } | |
4521 | } | |
4522 | ||
4523 | if (br_idx) { | |
4524 | if (dev) { | |
4525 | NL_SET_ERR_MSG(extack, "Master and device are mutually exclusive"); | |
4526 | return -EINVAL; | |
4527 | } | |
4528 | ||
4529 | br_dev = __dev_get_by_index(net, br_idx); | |
4530 | if (!br_dev) { | |
4531 | NL_SET_ERR_MSG(extack, "Invalid master ifindex"); | |
4532 | return -EINVAL; | |
4533 | } | |
4534 | ops = br_dev->netdev_ops; | |
4535 | } | |
4536 | ||
4537 | if (dev) { | |
4538 | if (!ndm_flags || (ndm_flags & NTF_MASTER)) { | |
2e92a2d0 | 4539 | if (!netif_is_bridge_port(dev)) { |
5b2f94b2 RP |
4540 | NL_SET_ERR_MSG(extack, "Device is not a bridge port"); |
4541 | return -EINVAL; | |
4542 | } | |
4543 | br_dev = netdev_master_upper_dev_get(dev); | |
4544 | if (!br_dev) { | |
4545 | NL_SET_ERR_MSG(extack, "Master of device not found"); | |
4546 | return -EINVAL; | |
4547 | } | |
4548 | ops = br_dev->netdev_ops; | |
4549 | } else { | |
4550 | if (!(ndm_flags & NTF_SELF)) { | |
4551 | NL_SET_ERR_MSG(extack, "Missing NTF_SELF"); | |
4552 | return -EINVAL; | |
4553 | } | |
4554 | ops = dev->netdev_ops; | |
4555 | } | |
4556 | } | |
4557 | ||
4558 | if (!br_dev && !dev) { | |
4559 | NL_SET_ERR_MSG(extack, "No device specified"); | |
4560 | return -ENODEV; | |
4561 | } | |
4562 | ||
4563 | if (!ops || !ops->ndo_fdb_get) { | |
4564 | NL_SET_ERR_MSG(extack, "Fdb get operation not supported by device"); | |
4565 | return -EOPNOTSUPP; | |
4566 | } | |
4567 | ||
4568 | skb = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
4569 | if (!skb) | |
4570 | return -ENOBUFS; | |
4571 | ||
4572 | if (br_dev) | |
4573 | dev = br_dev; | |
4574 | err = ops->ndo_fdb_get(skb, tb, dev, addr, vid, | |
4575 | NETLINK_CB(in_skb).portid, | |
4576 | nlh->nlmsg_seq, extack); | |
4577 | if (err) | |
4578 | goto out; | |
4579 | ||
4580 | return rtnl_unicast(skb, net, NETLINK_CB(in_skb).portid); | |
4581 | out: | |
4582 | kfree_skb(skb); | |
4583 | return err; | |
4584 | } | |
4585 | ||
2c3c031c SF |
4586 | static int brport_nla_put_flag(struct sk_buff *skb, u32 flags, u32 mask, |
4587 | unsigned int attrnum, unsigned int flag) | |
4588 | { | |
4589 | if (mask & flag) | |
4590 | return nla_put_u8(skb, attrnum, !!(flags & flag)); | |
4591 | return 0; | |
4592 | } | |
4593 | ||
815cccbf | 4594 | int ndo_dflt_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq, |
2c3c031c | 4595 | struct net_device *dev, u16 mode, |
7d4f8d87 SF |
4596 | u32 flags, u32 mask, int nlflags, |
4597 | u32 filter_mask, | |
4598 | int (*vlan_fill)(struct sk_buff *skb, | |
4599 | struct net_device *dev, | |
4600 | u32 filter_mask)) | |
815cccbf JF |
4601 | { |
4602 | struct nlmsghdr *nlh; | |
4603 | struct ifinfomsg *ifm; | |
4604 | struct nlattr *br_afspec; | |
2c3c031c | 4605 | struct nlattr *protinfo; |
815cccbf | 4606 | u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN; |
898e5061 | 4607 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
7d4f8d87 | 4608 | int err = 0; |
815cccbf | 4609 | |
46c264da | 4610 | nlh = nlmsg_put(skb, pid, seq, RTM_NEWLINK, sizeof(*ifm), nlflags); |
815cccbf JF |
4611 | if (nlh == NULL) |
4612 | return -EMSGSIZE; | |
4613 | ||
4614 | ifm = nlmsg_data(nlh); | |
4615 | ifm->ifi_family = AF_BRIDGE; | |
4616 | ifm->__ifi_pad = 0; | |
4617 | ifm->ifi_type = dev->type; | |
4618 | ifm->ifi_index = dev->ifindex; | |
4619 | ifm->ifi_flags = dev_get_flags(dev); | |
4620 | ifm->ifi_change = 0; | |
4621 | ||
4622 | ||
4623 | if (nla_put_string(skb, IFLA_IFNAME, dev->name) || | |
4624 | nla_put_u32(skb, IFLA_MTU, dev->mtu) || | |
4625 | nla_put_u8(skb, IFLA_OPERSTATE, operstate) || | |
898e5061 JP |
4626 | (br_dev && |
4627 | nla_put_u32(skb, IFLA_MASTER, br_dev->ifindex)) || | |
815cccbf JF |
4628 | (dev->addr_len && |
4629 | nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) || | |
a54acb3a ND |
4630 | (dev->ifindex != dev_get_iflink(dev) && |
4631 | nla_put_u32(skb, IFLA_LINK, dev_get_iflink(dev)))) | |
815cccbf JF |
4632 | goto nla_put_failure; |
4633 | ||
ae0be8de | 4634 | br_afspec = nla_nest_start_noflag(skb, IFLA_AF_SPEC); |
815cccbf JF |
4635 | if (!br_afspec) |
4636 | goto nla_put_failure; | |
4637 | ||
1d460b98 | 4638 | if (nla_put_u16(skb, IFLA_BRIDGE_FLAGS, BRIDGE_FLAGS_SELF)) { |
815cccbf JF |
4639 | nla_nest_cancel(skb, br_afspec); |
4640 | goto nla_put_failure; | |
4641 | } | |
1d460b98 RP |
4642 | |
4643 | if (mode != BRIDGE_MODE_UNDEF) { | |
4644 | if (nla_put_u16(skb, IFLA_BRIDGE_MODE, mode)) { | |
4645 | nla_nest_cancel(skb, br_afspec); | |
4646 | goto nla_put_failure; | |
4647 | } | |
4648 | } | |
7d4f8d87 SF |
4649 | if (vlan_fill) { |
4650 | err = vlan_fill(skb, dev, filter_mask); | |
4651 | if (err) { | |
4652 | nla_nest_cancel(skb, br_afspec); | |
4653 | goto nla_put_failure; | |
4654 | } | |
4655 | } | |
815cccbf JF |
4656 | nla_nest_end(skb, br_afspec); |
4657 | ||
ae0be8de | 4658 | protinfo = nla_nest_start(skb, IFLA_PROTINFO); |
2c3c031c SF |
4659 | if (!protinfo) |
4660 | goto nla_put_failure; | |
4661 | ||
4662 | if (brport_nla_put_flag(skb, flags, mask, | |
4663 | IFLA_BRPORT_MODE, BR_HAIRPIN_MODE) || | |
4664 | brport_nla_put_flag(skb, flags, mask, | |
4665 | IFLA_BRPORT_GUARD, BR_BPDU_GUARD) || | |
4666 | brport_nla_put_flag(skb, flags, mask, | |
4667 | IFLA_BRPORT_FAST_LEAVE, | |
4668 | BR_MULTICAST_FAST_LEAVE) || | |
4669 | brport_nla_put_flag(skb, flags, mask, | |
4670 | IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK) || | |
4671 | brport_nla_put_flag(skb, flags, mask, | |
4672 | IFLA_BRPORT_LEARNING, BR_LEARNING) || | |
4673 | brport_nla_put_flag(skb, flags, mask, | |
4674 | IFLA_BRPORT_LEARNING_SYNC, BR_LEARNING_SYNC) || | |
4675 | brport_nla_put_flag(skb, flags, mask, | |
4676 | IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD) || | |
4677 | brport_nla_put_flag(skb, flags, mask, | |
583cb0b4 JW |
4678 | IFLA_BRPORT_PROXYARP, BR_PROXYARP) || |
4679 | brport_nla_put_flag(skb, flags, mask, | |
4680 | IFLA_BRPORT_MCAST_FLOOD, BR_MCAST_FLOOD) || | |
4681 | brport_nla_put_flag(skb, flags, mask, | |
4682 | IFLA_BRPORT_BCAST_FLOOD, BR_BCAST_FLOOD)) { | |
2c3c031c SF |
4683 | nla_nest_cancel(skb, protinfo); |
4684 | goto nla_put_failure; | |
4685 | } | |
4686 | ||
4687 | nla_nest_end(skb, protinfo); | |
4688 | ||
053c095a JB |
4689 | nlmsg_end(skb, nlh); |
4690 | return 0; | |
815cccbf JF |
4691 | nla_put_failure: |
4692 | nlmsg_cancel(skb, nlh); | |
7d4f8d87 | 4693 | return err ? err : -EMSGSIZE; |
815cccbf | 4694 | } |
7d4f8d87 | 4695 | EXPORT_SYMBOL_GPL(ndo_dflt_bridge_getlink); |
815cccbf | 4696 | |
2d011be8 DA |
4697 | static int valid_bridge_getlink_req(const struct nlmsghdr *nlh, |
4698 | bool strict_check, u32 *filter_mask, | |
4699 | struct netlink_ext_ack *extack) | |
4700 | { | |
4701 | struct nlattr *tb[IFLA_MAX+1]; | |
4702 | int err, i; | |
4703 | ||
4704 | if (strict_check) { | |
4705 | struct ifinfomsg *ifm; | |
4706 | ||
4707 | if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*ifm))) { | |
4708 | NL_SET_ERR_MSG(extack, "Invalid header for bridge link dump"); | |
4709 | return -EINVAL; | |
4710 | } | |
4711 | ||
4712 | ifm = nlmsg_data(nlh); | |
4713 | if (ifm->__ifi_pad || ifm->ifi_type || ifm->ifi_flags || | |
4714 | ifm->ifi_change || ifm->ifi_index) { | |
4715 | NL_SET_ERR_MSG(extack, "Invalid values in header for bridge link dump request"); | |
4716 | return -EINVAL; | |
4717 | } | |
4718 | ||
8cb08174 JB |
4719 | err = nlmsg_parse_deprecated_strict(nlh, |
4720 | sizeof(struct ifinfomsg), | |
4721 | tb, IFLA_MAX, ifla_policy, | |
4722 | extack); | |
2d011be8 | 4723 | } else { |
8cb08174 JB |
4724 | err = nlmsg_parse_deprecated(nlh, sizeof(struct ifinfomsg), |
4725 | tb, IFLA_MAX, ifla_policy, | |
4726 | extack); | |
2d011be8 DA |
4727 | } |
4728 | if (err < 0) | |
4729 | return err; | |
4730 | ||
4731 | /* new attributes should only be added with strict checking */ | |
4732 | for (i = 0; i <= IFLA_MAX; ++i) { | |
4733 | if (!tb[i]) | |
4734 | continue; | |
4735 | ||
4736 | switch (i) { | |
4737 | case IFLA_EXT_MASK: | |
4738 | *filter_mask = nla_get_u32(tb[i]); | |
4739 | break; | |
4740 | default: | |
4741 | if (strict_check) { | |
4742 | NL_SET_ERR_MSG(extack, "Unsupported attribute in bridge link dump request"); | |
4743 | return -EINVAL; | |
4744 | } | |
4745 | } | |
4746 | } | |
4747 | ||
4748 | return 0; | |
4749 | } | |
4750 | ||
e5a55a89 JF |
4751 | static int rtnl_bridge_getlink(struct sk_buff *skb, struct netlink_callback *cb) |
4752 | { | |
2d011be8 | 4753 | const struct nlmsghdr *nlh = cb->nlh; |
e5a55a89 JF |
4754 | struct net *net = sock_net(skb->sk); |
4755 | struct net_device *dev; | |
4756 | int idx = 0; | |
4757 | u32 portid = NETLINK_CB(cb->skb).portid; | |
2d011be8 | 4758 | u32 seq = nlh->nlmsg_seq; |
6cbdceeb | 4759 | u32 filter_mask = 0; |
d64f69b0 | 4760 | int err; |
6cbdceeb | 4761 | |
2d011be8 DA |
4762 | err = valid_bridge_getlink_req(nlh, cb->strict_check, &filter_mask, |
4763 | cb->extack); | |
4764 | if (err < 0 && cb->strict_check) | |
4765 | return err; | |
e5a55a89 JF |
4766 | |
4767 | rcu_read_lock(); | |
4768 | for_each_netdev_rcu(net, dev) { | |
4769 | const struct net_device_ops *ops = dev->netdev_ops; | |
898e5061 | 4770 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
e5a55a89 | 4771 | |
898e5061 | 4772 | if (br_dev && br_dev->netdev_ops->ndo_bridge_getlink) { |
d64f69b0 RP |
4773 | if (idx >= cb->args[0]) { |
4774 | err = br_dev->netdev_ops->ndo_bridge_getlink( | |
4775 | skb, portid, seq, dev, | |
4776 | filter_mask, NLM_F_MULTI); | |
f6c5775f DA |
4777 | if (err < 0 && err != -EOPNOTSUPP) { |
4778 | if (likely(skb->len)) | |
4779 | break; | |
4780 | ||
4781 | goto out_err; | |
4782 | } | |
d64f69b0 | 4783 | } |
25b1e679 | 4784 | idx++; |
e5a55a89 JF |
4785 | } |
4786 | ||
4787 | if (ops->ndo_bridge_getlink) { | |
d64f69b0 RP |
4788 | if (idx >= cb->args[0]) { |
4789 | err = ops->ndo_bridge_getlink(skb, portid, | |
4790 | seq, dev, | |
4791 | filter_mask, | |
4792 | NLM_F_MULTI); | |
f6c5775f DA |
4793 | if (err < 0 && err != -EOPNOTSUPP) { |
4794 | if (likely(skb->len)) | |
4795 | break; | |
4796 | ||
4797 | goto out_err; | |
4798 | } | |
d64f69b0 | 4799 | } |
25b1e679 | 4800 | idx++; |
e5a55a89 JF |
4801 | } |
4802 | } | |
f6c5775f DA |
4803 | err = skb->len; |
4804 | out_err: | |
e5a55a89 JF |
4805 | rcu_read_unlock(); |
4806 | cb->args[0] = idx; | |
4807 | ||
f6c5775f | 4808 | return err; |
e5a55a89 JF |
4809 | } |
4810 | ||
2469ffd7 JF |
4811 | static inline size_t bridge_nlmsg_size(void) |
4812 | { | |
4813 | return NLMSG_ALIGN(sizeof(struct ifinfomsg)) | |
4814 | + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */ | |
4815 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */ | |
4816 | + nla_total_size(sizeof(u32)) /* IFLA_MASTER */ | |
4817 | + nla_total_size(sizeof(u32)) /* IFLA_MTU */ | |
4818 | + nla_total_size(sizeof(u32)) /* IFLA_LINK */ | |
4819 | + nla_total_size(sizeof(u32)) /* IFLA_OPERSTATE */ | |
4820 | + nla_total_size(sizeof(u8)) /* IFLA_PROTINFO */ | |
4821 | + nla_total_size(sizeof(struct nlattr)) /* IFLA_AF_SPEC */ | |
4822 | + nla_total_size(sizeof(u16)) /* IFLA_BRIDGE_FLAGS */ | |
4823 | + nla_total_size(sizeof(u16)); /* IFLA_BRIDGE_MODE */ | |
4824 | } | |
4825 | ||
02dba438 | 4826 | static int rtnl_bridge_notify(struct net_device *dev) |
2469ffd7 JF |
4827 | { |
4828 | struct net *net = dev_net(dev); | |
2469ffd7 JF |
4829 | struct sk_buff *skb; |
4830 | int err = -EOPNOTSUPP; | |
4831 | ||
02dba438 RP |
4832 | if (!dev->netdev_ops->ndo_bridge_getlink) |
4833 | return 0; | |
4834 | ||
2469ffd7 JF |
4835 | skb = nlmsg_new(bridge_nlmsg_size(), GFP_ATOMIC); |
4836 | if (!skb) { | |
4837 | err = -ENOMEM; | |
4838 | goto errout; | |
4839 | } | |
4840 | ||
46c264da | 4841 | err = dev->netdev_ops->ndo_bridge_getlink(skb, 0, 0, dev, 0, 0); |
02dba438 RP |
4842 | if (err < 0) |
4843 | goto errout; | |
2469ffd7 | 4844 | |
59ccaaaa RP |
4845 | if (!skb->len) |
4846 | goto errout; | |
4847 | ||
2469ffd7 JF |
4848 | rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC); |
4849 | return 0; | |
4850 | errout: | |
4851 | WARN_ON(err == -EMSGSIZE); | |
4852 | kfree_skb(skb); | |
59ccaaaa RP |
4853 | if (err) |
4854 | rtnl_set_sk_err(net, RTNLGRP_LINK, err); | |
2469ffd7 JF |
4855 | return err; |
4856 | } | |
4857 | ||
c21ef3e3 DA |
4858 | static int rtnl_bridge_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, |
4859 | struct netlink_ext_ack *extack) | |
e5a55a89 JF |
4860 | { |
4861 | struct net *net = sock_net(skb->sk); | |
4862 | struct ifinfomsg *ifm; | |
4863 | struct net_device *dev; | |
2469ffd7 JF |
4864 | struct nlattr *br_spec, *attr = NULL; |
4865 | int rem, err = -EOPNOTSUPP; | |
4de8b413 | 4866 | u16 flags = 0; |
c38e01b8 | 4867 | bool have_flags = false; |
e5a55a89 JF |
4868 | |
4869 | if (nlmsg_len(nlh) < sizeof(*ifm)) | |
4870 | return -EINVAL; | |
4871 | ||
4872 | ifm = nlmsg_data(nlh); | |
4873 | if (ifm->ifi_family != AF_BRIDGE) | |
4874 | return -EPFNOSUPPORT; | |
4875 | ||
4876 | dev = __dev_get_by_index(net, ifm->ifi_index); | |
4877 | if (!dev) { | |
b88d12e4 | 4878 | NL_SET_ERR_MSG(extack, "unknown ifindex"); |
e5a55a89 JF |
4879 | return -ENODEV; |
4880 | } | |
4881 | ||
2469ffd7 JF |
4882 | br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); |
4883 | if (br_spec) { | |
4884 | nla_for_each_nested(attr, br_spec, rem) { | |
4885 | if (nla_type(attr) == IFLA_BRIDGE_FLAGS) { | |
6e8d1c55 TG |
4886 | if (nla_len(attr) < sizeof(flags)) |
4887 | return -EINVAL; | |
4888 | ||
c38e01b8 | 4889 | have_flags = true; |
2469ffd7 JF |
4890 | flags = nla_get_u16(attr); |
4891 | break; | |
4892 | } | |
4893 | } | |
4894 | } | |
4895 | ||
4896 | if (!flags || (flags & BRIDGE_FLAGS_MASTER)) { | |
898e5061 JP |
4897 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
4898 | ||
4899 | if (!br_dev || !br_dev->netdev_ops->ndo_bridge_setlink) { | |
2469ffd7 JF |
4900 | err = -EOPNOTSUPP; |
4901 | goto out; | |
4902 | } | |
4903 | ||
2fd527b7 PM |
4904 | err = br_dev->netdev_ops->ndo_bridge_setlink(dev, nlh, flags, |
4905 | extack); | |
e5a55a89 JF |
4906 | if (err) |
4907 | goto out; | |
2469ffd7 JF |
4908 | |
4909 | flags &= ~BRIDGE_FLAGS_MASTER; | |
e5a55a89 JF |
4910 | } |
4911 | ||
2469ffd7 JF |
4912 | if ((flags & BRIDGE_FLAGS_SELF)) { |
4913 | if (!dev->netdev_ops->ndo_bridge_setlink) | |
4914 | err = -EOPNOTSUPP; | |
4915 | else | |
add511b3 | 4916 | err = dev->netdev_ops->ndo_bridge_setlink(dev, nlh, |
2fd527b7 PM |
4917 | flags, |
4918 | extack); | |
02dba438 | 4919 | if (!err) { |
2469ffd7 | 4920 | flags &= ~BRIDGE_FLAGS_SELF; |
02dba438 RP |
4921 | |
4922 | /* Generate event to notify upper layer of bridge | |
4923 | * change | |
4924 | */ | |
4925 | err = rtnl_bridge_notify(dev); | |
4926 | } | |
2469ffd7 | 4927 | } |
e5a55a89 | 4928 | |
c38e01b8 | 4929 | if (have_flags) |
2469ffd7 | 4930 | memcpy(nla_data(attr), &flags, sizeof(flags)); |
e5a55a89 JF |
4931 | out: |
4932 | return err; | |
4933 | } | |
4934 | ||
c21ef3e3 DA |
4935 | static int rtnl_bridge_dellink(struct sk_buff *skb, struct nlmsghdr *nlh, |
4936 | struct netlink_ext_ack *extack) | |
407af329 VY |
4937 | { |
4938 | struct net *net = sock_net(skb->sk); | |
4939 | struct ifinfomsg *ifm; | |
4940 | struct net_device *dev; | |
4941 | struct nlattr *br_spec, *attr = NULL; | |
4942 | int rem, err = -EOPNOTSUPP; | |
4de8b413 | 4943 | u16 flags = 0; |
407af329 VY |
4944 | bool have_flags = false; |
4945 | ||
4946 | if (nlmsg_len(nlh) < sizeof(*ifm)) | |
4947 | return -EINVAL; | |
4948 | ||
4949 | ifm = nlmsg_data(nlh); | |
4950 | if (ifm->ifi_family != AF_BRIDGE) | |
4951 | return -EPFNOSUPPORT; | |
4952 | ||
4953 | dev = __dev_get_by_index(net, ifm->ifi_index); | |
4954 | if (!dev) { | |
b88d12e4 | 4955 | NL_SET_ERR_MSG(extack, "unknown ifindex"); |
407af329 VY |
4956 | return -ENODEV; |
4957 | } | |
4958 | ||
4959 | br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); | |
4960 | if (br_spec) { | |
4961 | nla_for_each_nested(attr, br_spec, rem) { | |
4962 | if (nla_type(attr) == IFLA_BRIDGE_FLAGS) { | |
6e8d1c55 TG |
4963 | if (nla_len(attr) < sizeof(flags)) |
4964 | return -EINVAL; | |
4965 | ||
407af329 VY |
4966 | have_flags = true; |
4967 | flags = nla_get_u16(attr); | |
4968 | break; | |
4969 | } | |
4970 | } | |
4971 | } | |
4972 | ||
407af329 VY |
4973 | if (!flags || (flags & BRIDGE_FLAGS_MASTER)) { |
4974 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); | |
4975 | ||
4976 | if (!br_dev || !br_dev->netdev_ops->ndo_bridge_dellink) { | |
4977 | err = -EOPNOTSUPP; | |
4978 | goto out; | |
4979 | } | |
4980 | ||
add511b3 | 4981 | err = br_dev->netdev_ops->ndo_bridge_dellink(dev, nlh, flags); |
407af329 VY |
4982 | if (err) |
4983 | goto out; | |
4984 | ||
4985 | flags &= ~BRIDGE_FLAGS_MASTER; | |
4986 | } | |
4987 | ||
4988 | if ((flags & BRIDGE_FLAGS_SELF)) { | |
4989 | if (!dev->netdev_ops->ndo_bridge_dellink) | |
4990 | err = -EOPNOTSUPP; | |
4991 | else | |
add511b3 RP |
4992 | err = dev->netdev_ops->ndo_bridge_dellink(dev, nlh, |
4993 | flags); | |
407af329 | 4994 | |
02dba438 | 4995 | if (!err) { |
407af329 | 4996 | flags &= ~BRIDGE_FLAGS_SELF; |
02dba438 RP |
4997 | |
4998 | /* Generate event to notify upper layer of bridge | |
4999 | * change | |
5000 | */ | |
5001 | err = rtnl_bridge_notify(dev); | |
5002 | } | |
407af329 VY |
5003 | } |
5004 | ||
5005 | if (have_flags) | |
5006 | memcpy(nla_data(attr), &flags, sizeof(flags)); | |
407af329 VY |
5007 | out: |
5008 | return err; | |
5009 | } | |
5010 | ||
e8872a25 NA |
5011 | static bool stats_attr_valid(unsigned int mask, int attrid, int idxattr) |
5012 | { | |
5013 | return (mask & IFLA_STATS_FILTER_BIT(attrid)) && | |
5014 | (!idxattr || idxattr == attrid); | |
5015 | } | |
5016 | ||
69ae6ad2 NF |
5017 | #define IFLA_OFFLOAD_XSTATS_FIRST (IFLA_OFFLOAD_XSTATS_UNSPEC + 1) |
5018 | static int rtnl_get_offload_stats_attr_size(int attr_id) | |
5019 | { | |
5020 | switch (attr_id) { | |
5021 | case IFLA_OFFLOAD_XSTATS_CPU_HIT: | |
5022 | return sizeof(struct rtnl_link_stats64); | |
5023 | } | |
5024 | ||
5025 | return 0; | |
5026 | } | |
5027 | ||
5028 | static int rtnl_get_offload_stats(struct sk_buff *skb, struct net_device *dev, | |
5029 | int *prividx) | |
5030 | { | |
5031 | struct nlattr *attr = NULL; | |
5032 | int attr_id, size; | |
5033 | void *attr_data; | |
5034 | int err; | |
5035 | ||
5036 | if (!(dev->netdev_ops && dev->netdev_ops->ndo_has_offload_stats && | |
5037 | dev->netdev_ops->ndo_get_offload_stats)) | |
5038 | return -ENODATA; | |
5039 | ||
5040 | for (attr_id = IFLA_OFFLOAD_XSTATS_FIRST; | |
5041 | attr_id <= IFLA_OFFLOAD_XSTATS_MAX; attr_id++) { | |
5042 | if (attr_id < *prividx) | |
5043 | continue; | |
5044 | ||
5045 | size = rtnl_get_offload_stats_attr_size(attr_id); | |
5046 | if (!size) | |
5047 | continue; | |
5048 | ||
3df5b3c6 | 5049 | if (!dev->netdev_ops->ndo_has_offload_stats(dev, attr_id)) |
69ae6ad2 NF |
5050 | continue; |
5051 | ||
5052 | attr = nla_reserve_64bit(skb, attr_id, size, | |
5053 | IFLA_OFFLOAD_XSTATS_UNSPEC); | |
5054 | if (!attr) | |
5055 | goto nla_put_failure; | |
5056 | ||
5057 | attr_data = nla_data(attr); | |
5058 | memset(attr_data, 0, size); | |
5059 | err = dev->netdev_ops->ndo_get_offload_stats(attr_id, dev, | |
5060 | attr_data); | |
5061 | if (err) | |
5062 | goto get_offload_stats_failure; | |
5063 | } | |
5064 | ||
5065 | if (!attr) | |
5066 | return -ENODATA; | |
5067 | ||
5068 | *prividx = 0; | |
5069 | return 0; | |
5070 | ||
5071 | nla_put_failure: | |
5072 | err = -EMSGSIZE; | |
5073 | get_offload_stats_failure: | |
5074 | *prividx = attr_id; | |
5075 | return err; | |
5076 | } | |
5077 | ||
5078 | static int rtnl_get_offload_stats_size(const struct net_device *dev) | |
5079 | { | |
5080 | int nla_size = 0; | |
5081 | int attr_id; | |
5082 | int size; | |
5083 | ||
5084 | if (!(dev->netdev_ops && dev->netdev_ops->ndo_has_offload_stats && | |
5085 | dev->netdev_ops->ndo_get_offload_stats)) | |
5086 | return 0; | |
5087 | ||
5088 | for (attr_id = IFLA_OFFLOAD_XSTATS_FIRST; | |
5089 | attr_id <= IFLA_OFFLOAD_XSTATS_MAX; attr_id++) { | |
3df5b3c6 | 5090 | if (!dev->netdev_ops->ndo_has_offload_stats(dev, attr_id)) |
69ae6ad2 NF |
5091 | continue; |
5092 | size = rtnl_get_offload_stats_attr_size(attr_id); | |
5093 | nla_size += nla_total_size_64bit(size); | |
5094 | } | |
5095 | ||
5096 | if (nla_size != 0) | |
5097 | nla_size += nla_total_size(0); | |
5098 | ||
5099 | return nla_size; | |
5100 | } | |
5101 | ||
10c9ead9 RP |
5102 | static int rtnl_fill_statsinfo(struct sk_buff *skb, struct net_device *dev, |
5103 | int type, u32 pid, u32 seq, u32 change, | |
e8872a25 NA |
5104 | unsigned int flags, unsigned int filter_mask, |
5105 | int *idxattr, int *prividx) | |
10c9ead9 RP |
5106 | { |
5107 | struct if_stats_msg *ifsm; | |
5108 | struct nlmsghdr *nlh; | |
5109 | struct nlattr *attr; | |
e8872a25 | 5110 | int s_prividx = *prividx; |
69ae6ad2 | 5111 | int err; |
10c9ead9 RP |
5112 | |
5113 | ASSERT_RTNL(); | |
5114 | ||
5115 | nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ifsm), flags); | |
5116 | if (!nlh) | |
5117 | return -EMSGSIZE; | |
5118 | ||
5119 | ifsm = nlmsg_data(nlh); | |
ce024f42 NA |
5120 | ifsm->family = PF_UNSPEC; |
5121 | ifsm->pad1 = 0; | |
5122 | ifsm->pad2 = 0; | |
10c9ead9 RP |
5123 | ifsm->ifindex = dev->ifindex; |
5124 | ifsm->filter_mask = filter_mask; | |
5125 | ||
e8872a25 | 5126 | if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_64, *idxattr)) { |
10c9ead9 | 5127 | struct rtnl_link_stats64 *sp; |
10c9ead9 | 5128 | |
58414d32 ND |
5129 | attr = nla_reserve_64bit(skb, IFLA_STATS_LINK_64, |
5130 | sizeof(struct rtnl_link_stats64), | |
5131 | IFLA_STATS_UNSPEC); | |
10c9ead9 RP |
5132 | if (!attr) |
5133 | goto nla_put_failure; | |
5134 | ||
5135 | sp = nla_data(attr); | |
5136 | dev_get_stats(dev, sp); | |
5137 | } | |
5138 | ||
97a47fac NA |
5139 | if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_XSTATS, *idxattr)) { |
5140 | const struct rtnl_link_ops *ops = dev->rtnl_link_ops; | |
5141 | ||
5142 | if (ops && ops->fill_linkxstats) { | |
97a47fac | 5143 | *idxattr = IFLA_STATS_LINK_XSTATS; |
ae0be8de MK |
5144 | attr = nla_nest_start_noflag(skb, |
5145 | IFLA_STATS_LINK_XSTATS); | |
97a47fac NA |
5146 | if (!attr) |
5147 | goto nla_put_failure; | |
5148 | ||
80e73cc5 NA |
5149 | err = ops->fill_linkxstats(skb, dev, prividx, *idxattr); |
5150 | nla_nest_end(skb, attr); | |
5151 | if (err) | |
5152 | goto nla_put_failure; | |
5153 | *idxattr = 0; | |
5154 | } | |
5155 | } | |
5156 | ||
5157 | if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_XSTATS_SLAVE, | |
5158 | *idxattr)) { | |
5159 | const struct rtnl_link_ops *ops = NULL; | |
5160 | const struct net_device *master; | |
5161 | ||
5162 | master = netdev_master_upper_dev_get(dev); | |
5163 | if (master) | |
5164 | ops = master->rtnl_link_ops; | |
5165 | if (ops && ops->fill_linkxstats) { | |
80e73cc5 | 5166 | *idxattr = IFLA_STATS_LINK_XSTATS_SLAVE; |
ae0be8de MK |
5167 | attr = nla_nest_start_noflag(skb, |
5168 | IFLA_STATS_LINK_XSTATS_SLAVE); | |
80e73cc5 NA |
5169 | if (!attr) |
5170 | goto nla_put_failure; | |
5171 | ||
5172 | err = ops->fill_linkxstats(skb, dev, prividx, *idxattr); | |
97a47fac NA |
5173 | nla_nest_end(skb, attr); |
5174 | if (err) | |
5175 | goto nla_put_failure; | |
5176 | *idxattr = 0; | |
5177 | } | |
5178 | } | |
5179 | ||
69ae6ad2 NF |
5180 | if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_OFFLOAD_XSTATS, |
5181 | *idxattr)) { | |
5182 | *idxattr = IFLA_STATS_LINK_OFFLOAD_XSTATS; | |
ae0be8de MK |
5183 | attr = nla_nest_start_noflag(skb, |
5184 | IFLA_STATS_LINK_OFFLOAD_XSTATS); | |
69ae6ad2 NF |
5185 | if (!attr) |
5186 | goto nla_put_failure; | |
5187 | ||
5188 | err = rtnl_get_offload_stats(skb, dev, prividx); | |
5189 | if (err == -ENODATA) | |
5190 | nla_nest_cancel(skb, attr); | |
5191 | else | |
5192 | nla_nest_end(skb, attr); | |
5193 | ||
5194 | if (err && err != -ENODATA) | |
5195 | goto nla_put_failure; | |
5196 | *idxattr = 0; | |
5197 | } | |
5198 | ||
aefb4d4a RS |
5199 | if (stats_attr_valid(filter_mask, IFLA_STATS_AF_SPEC, *idxattr)) { |
5200 | struct rtnl_af_ops *af_ops; | |
5201 | ||
5202 | *idxattr = IFLA_STATS_AF_SPEC; | |
ae0be8de | 5203 | attr = nla_nest_start_noflag(skb, IFLA_STATS_AF_SPEC); |
aefb4d4a RS |
5204 | if (!attr) |
5205 | goto nla_put_failure; | |
5206 | ||
5fa85a09 FW |
5207 | rcu_read_lock(); |
5208 | list_for_each_entry_rcu(af_ops, &rtnl_af_ops, list) { | |
aefb4d4a RS |
5209 | if (af_ops->fill_stats_af) { |
5210 | struct nlattr *af; | |
5211 | int err; | |
5212 | ||
ae0be8de MK |
5213 | af = nla_nest_start_noflag(skb, |
5214 | af_ops->family); | |
5fa85a09 FW |
5215 | if (!af) { |
5216 | rcu_read_unlock(); | |
aefb4d4a | 5217 | goto nla_put_failure; |
5fa85a09 | 5218 | } |
aefb4d4a RS |
5219 | err = af_ops->fill_stats_af(skb, dev); |
5220 | ||
5fa85a09 | 5221 | if (err == -ENODATA) { |
aefb4d4a | 5222 | nla_nest_cancel(skb, af); |
5fa85a09 FW |
5223 | } else if (err < 0) { |
5224 | rcu_read_unlock(); | |
aefb4d4a | 5225 | goto nla_put_failure; |
5fa85a09 | 5226 | } |
aefb4d4a RS |
5227 | |
5228 | nla_nest_end(skb, af); | |
5229 | } | |
5230 | } | |
5fa85a09 | 5231 | rcu_read_unlock(); |
aefb4d4a RS |
5232 | |
5233 | nla_nest_end(skb, attr); | |
5234 | ||
5235 | *idxattr = 0; | |
5236 | } | |
5237 | ||
10c9ead9 RP |
5238 | nlmsg_end(skb, nlh); |
5239 | ||
5240 | return 0; | |
5241 | ||
5242 | nla_put_failure: | |
e8872a25 NA |
5243 | /* not a multi message or no progress mean a real error */ |
5244 | if (!(flags & NLM_F_MULTI) || s_prividx == *prividx) | |
5245 | nlmsg_cancel(skb, nlh); | |
5246 | else | |
5247 | nlmsg_end(skb, nlh); | |
10c9ead9 RP |
5248 | |
5249 | return -EMSGSIZE; | |
5250 | } | |
5251 | ||
10c9ead9 RP |
5252 | static size_t if_nlmsg_stats_size(const struct net_device *dev, |
5253 | u32 filter_mask) | |
5254 | { | |
5255 | size_t size = 0; | |
5256 | ||
e8872a25 | 5257 | if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_64, 0)) |
10c9ead9 RP |
5258 | size += nla_total_size_64bit(sizeof(struct rtnl_link_stats64)); |
5259 | ||
97a47fac NA |
5260 | if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_XSTATS, 0)) { |
5261 | const struct rtnl_link_ops *ops = dev->rtnl_link_ops; | |
80e73cc5 | 5262 | int attr = IFLA_STATS_LINK_XSTATS; |
97a47fac NA |
5263 | |
5264 | if (ops && ops->get_linkxstats_size) { | |
80e73cc5 NA |
5265 | size += nla_total_size(ops->get_linkxstats_size(dev, |
5266 | attr)); | |
97a47fac NA |
5267 | /* for IFLA_STATS_LINK_XSTATS */ |
5268 | size += nla_total_size(0); | |
5269 | } | |
5270 | } | |
5271 | ||
80e73cc5 NA |
5272 | if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_XSTATS_SLAVE, 0)) { |
5273 | struct net_device *_dev = (struct net_device *)dev; | |
5274 | const struct rtnl_link_ops *ops = NULL; | |
5275 | const struct net_device *master; | |
5276 | ||
5277 | /* netdev_master_upper_dev_get can't take const */ | |
5278 | master = netdev_master_upper_dev_get(_dev); | |
5279 | if (master) | |
5280 | ops = master->rtnl_link_ops; | |
5281 | if (ops && ops->get_linkxstats_size) { | |
5282 | int attr = IFLA_STATS_LINK_XSTATS_SLAVE; | |
5283 | ||
5284 | size += nla_total_size(ops->get_linkxstats_size(dev, | |
5285 | attr)); | |
5286 | /* for IFLA_STATS_LINK_XSTATS_SLAVE */ | |
5287 | size += nla_total_size(0); | |
5288 | } | |
5289 | } | |
5290 | ||
69ae6ad2 NF |
5291 | if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_OFFLOAD_XSTATS, 0)) |
5292 | size += rtnl_get_offload_stats_size(dev); | |
5293 | ||
aefb4d4a RS |
5294 | if (stats_attr_valid(filter_mask, IFLA_STATS_AF_SPEC, 0)) { |
5295 | struct rtnl_af_ops *af_ops; | |
5296 | ||
5297 | /* for IFLA_STATS_AF_SPEC */ | |
5298 | size += nla_total_size(0); | |
5299 | ||
5fa85a09 FW |
5300 | rcu_read_lock(); |
5301 | list_for_each_entry_rcu(af_ops, &rtnl_af_ops, list) { | |
aefb4d4a RS |
5302 | if (af_ops->get_stats_af_size) { |
5303 | size += nla_total_size( | |
5304 | af_ops->get_stats_af_size(dev)); | |
5305 | ||
5306 | /* for AF_* */ | |
5307 | size += nla_total_size(0); | |
5308 | } | |
5309 | } | |
5fa85a09 | 5310 | rcu_read_unlock(); |
aefb4d4a RS |
5311 | } |
5312 | ||
10c9ead9 RP |
5313 | return size; |
5314 | } | |
5315 | ||
51bc860d JK |
5316 | static int rtnl_valid_stats_req(const struct nlmsghdr *nlh, bool strict_check, |
5317 | bool is_dump, struct netlink_ext_ack *extack) | |
5318 | { | |
5319 | struct if_stats_msg *ifsm; | |
5320 | ||
69f23a09 | 5321 | if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*ifsm))) { |
51bc860d JK |
5322 | NL_SET_ERR_MSG(extack, "Invalid header for stats dump"); |
5323 | return -EINVAL; | |
5324 | } | |
5325 | ||
5326 | if (!strict_check) | |
5327 | return 0; | |
5328 | ||
5329 | ifsm = nlmsg_data(nlh); | |
5330 | ||
5331 | /* only requests using strict checks can pass data to influence | |
5332 | * the dump. The legacy exception is filter_mask. | |
5333 | */ | |
5334 | if (ifsm->pad1 || ifsm->pad2 || (is_dump && ifsm->ifindex)) { | |
5335 | NL_SET_ERR_MSG(extack, "Invalid values in header for stats dump request"); | |
5336 | return -EINVAL; | |
5337 | } | |
5338 | if (nlmsg_attrlen(nlh, sizeof(*ifsm))) { | |
5339 | NL_SET_ERR_MSG(extack, "Invalid attributes after stats header"); | |
5340 | return -EINVAL; | |
5341 | } | |
6300acb2 JK |
5342 | if (ifsm->filter_mask >= IFLA_STATS_FILTER_BIT(IFLA_STATS_MAX + 1)) { |
5343 | NL_SET_ERR_MSG(extack, "Invalid stats requested through filter mask"); | |
5344 | return -EINVAL; | |
5345 | } | |
51bc860d JK |
5346 | |
5347 | return 0; | |
5348 | } | |
5349 | ||
c21ef3e3 DA |
5350 | static int rtnl_stats_get(struct sk_buff *skb, struct nlmsghdr *nlh, |
5351 | struct netlink_ext_ack *extack) | |
10c9ead9 RP |
5352 | { |
5353 | struct net *net = sock_net(skb->sk); | |
10c9ead9 | 5354 | struct net_device *dev = NULL; |
e8872a25 NA |
5355 | int idxattr = 0, prividx = 0; |
5356 | struct if_stats_msg *ifsm; | |
10c9ead9 RP |
5357 | struct sk_buff *nskb; |
5358 | u32 filter_mask; | |
5359 | int err; | |
5360 | ||
51bc860d JK |
5361 | err = rtnl_valid_stats_req(nlh, netlink_strict_get_check(skb), |
5362 | false, extack); | |
5363 | if (err) | |
5364 | return err; | |
4775cc1f | 5365 | |
10c9ead9 RP |
5366 | ifsm = nlmsg_data(nlh); |
5367 | if (ifsm->ifindex > 0) | |
5368 | dev = __dev_get_by_index(net, ifsm->ifindex); | |
5369 | else | |
5370 | return -EINVAL; | |
5371 | ||
5372 | if (!dev) | |
5373 | return -ENODEV; | |
5374 | ||
5375 | filter_mask = ifsm->filter_mask; | |
5376 | if (!filter_mask) | |
5377 | return -EINVAL; | |
5378 | ||
5379 | nskb = nlmsg_new(if_nlmsg_stats_size(dev, filter_mask), GFP_KERNEL); | |
5380 | if (!nskb) | |
5381 | return -ENOBUFS; | |
5382 | ||
5383 | err = rtnl_fill_statsinfo(nskb, dev, RTM_NEWSTATS, | |
5384 | NETLINK_CB(skb).portid, nlh->nlmsg_seq, 0, | |
e8872a25 | 5385 | 0, filter_mask, &idxattr, &prividx); |
10c9ead9 RP |
5386 | if (err < 0) { |
5387 | /* -EMSGSIZE implies BUG in if_nlmsg_stats_size */ | |
5388 | WARN_ON(err == -EMSGSIZE); | |
5389 | kfree_skb(nskb); | |
5390 | } else { | |
5391 | err = rtnl_unicast(nskb, net, NETLINK_CB(skb).portid); | |
5392 | } | |
5393 | ||
5394 | return err; | |
5395 | } | |
5396 | ||
5397 | static int rtnl_stats_dump(struct sk_buff *skb, struct netlink_callback *cb) | |
5398 | { | |
841891ec | 5399 | struct netlink_ext_ack *extack = cb->extack; |
e8872a25 | 5400 | int h, s_h, err, s_idx, s_idxattr, s_prividx; |
10c9ead9 | 5401 | struct net *net = sock_net(skb->sk); |
e8872a25 | 5402 | unsigned int flags = NLM_F_MULTI; |
10c9ead9 | 5403 | struct if_stats_msg *ifsm; |
10c9ead9 | 5404 | struct hlist_head *head; |
e8872a25 | 5405 | struct net_device *dev; |
10c9ead9 | 5406 | u32 filter_mask = 0; |
e8872a25 | 5407 | int idx = 0; |
10c9ead9 RP |
5408 | |
5409 | s_h = cb->args[0]; | |
5410 | s_idx = cb->args[1]; | |
e8872a25 NA |
5411 | s_idxattr = cb->args[2]; |
5412 | s_prividx = cb->args[3]; | |
10c9ead9 RP |
5413 | |
5414 | cb->seq = net->dev_base_seq; | |
5415 | ||
51bc860d JK |
5416 | err = rtnl_valid_stats_req(cb->nlh, cb->strict_check, true, extack); |
5417 | if (err) | |
5418 | return err; | |
4775cc1f | 5419 | |
10c9ead9 RP |
5420 | ifsm = nlmsg_data(cb->nlh); |
5421 | filter_mask = ifsm->filter_mask; | |
841891ec DA |
5422 | if (!filter_mask) { |
5423 | NL_SET_ERR_MSG(extack, "Filter mask must be set for stats dump"); | |
10c9ead9 | 5424 | return -EINVAL; |
841891ec | 5425 | } |
10c9ead9 RP |
5426 | |
5427 | for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) { | |
5428 | idx = 0; | |
5429 | head = &net->dev_index_head[h]; | |
5430 | hlist_for_each_entry(dev, head, index_hlist) { | |
5431 | if (idx < s_idx) | |
5432 | goto cont; | |
5433 | err = rtnl_fill_statsinfo(skb, dev, RTM_NEWSTATS, | |
5434 | NETLINK_CB(cb->skb).portid, | |
5435 | cb->nlh->nlmsg_seq, 0, | |
e8872a25 NA |
5436 | flags, filter_mask, |
5437 | &s_idxattr, &s_prividx); | |
10c9ead9 RP |
5438 | /* If we ran out of room on the first message, |
5439 | * we're in trouble | |
5440 | */ | |
5441 | WARN_ON((err == -EMSGSIZE) && (skb->len == 0)); | |
5442 | ||
5443 | if (err < 0) | |
5444 | goto out; | |
e8872a25 NA |
5445 | s_prividx = 0; |
5446 | s_idxattr = 0; | |
10c9ead9 RP |
5447 | nl_dump_check_consistent(cb, nlmsg_hdr(skb)); |
5448 | cont: | |
5449 | idx++; | |
5450 | } | |
5451 | } | |
5452 | out: | |
e8872a25 NA |
5453 | cb->args[3] = s_prividx; |
5454 | cb->args[2] = s_idxattr; | |
10c9ead9 RP |
5455 | cb->args[1] = idx; |
5456 | cb->args[0] = h; | |
5457 | ||
5458 | return skb->len; | |
5459 | } | |
5460 | ||
1da177e4 LT |
5461 | /* Process one rtnetlink message. */ |
5462 | ||
2d4bc933 JB |
5463 | static int rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, |
5464 | struct netlink_ext_ack *extack) | |
1da177e4 | 5465 | { |
3b1e0a65 | 5466 | struct net *net = sock_net(skb->sk); |
addf9b90 | 5467 | struct rtnl_link *link; |
e4202511 | 5468 | struct module *owner; |
6853dd48 | 5469 | int err = -EOPNOTSUPP; |
e2849863 | 5470 | rtnl_doit_func doit; |
62256f98 | 5471 | unsigned int flags; |
617cfc75 | 5472 | int kind; |
1da177e4 LT |
5473 | int family; |
5474 | int type; | |
1da177e4 | 5475 | |
1da177e4 | 5476 | type = nlh->nlmsg_type; |
1da177e4 | 5477 | if (type > RTM_MAX) |
038890fe | 5478 | return -EOPNOTSUPP; |
1da177e4 LT |
5479 | |
5480 | type -= RTM_BASE; | |
5481 | ||
5482 | /* All the messages must have at least 1 byte length */ | |
573ce260 | 5483 | if (nlmsg_len(nlh) < sizeof(struct rtgenmsg)) |
1da177e4 LT |
5484 | return 0; |
5485 | ||
573ce260 | 5486 | family = ((struct rtgenmsg *)nlmsg_data(nlh))->rtgen_family; |
1da177e4 LT |
5487 | kind = type&3; |
5488 | ||
90f62cf3 | 5489 | if (kind != 2 && !netlink_net_capable(skb, CAP_NET_ADMIN)) |
1d00a4eb | 5490 | return -EPERM; |
1da177e4 | 5491 | |
6853dd48 | 5492 | rcu_read_lock(); |
b8f3ab42 | 5493 | if (kind == 2 && nlh->nlmsg_flags&NLM_F_DUMP) { |
97c53cac | 5494 | struct sock *rtnl; |
e2849863 | 5495 | rtnl_dumpit_func dumpit; |
ebfe3c51 | 5496 | u32 min_dump_alloc = 0; |
1da177e4 | 5497 | |
addf9b90 FW |
5498 | link = rtnl_get_link(family, type); |
5499 | if (!link || !link->dumpit) { | |
6853dd48 | 5500 | family = PF_UNSPEC; |
addf9b90 FW |
5501 | link = rtnl_get_link(family, type); |
5502 | if (!link || !link->dumpit) | |
6853dd48 FW |
5503 | goto err_unlock; |
5504 | } | |
e4202511 | 5505 | owner = link->owner; |
addf9b90 | 5506 | dumpit = link->dumpit; |
e1fa6d21 | 5507 | |
5c2bb9b6 | 5508 | if (type == RTM_GETLINK - RTM_BASE) |
e1fa6d21 | 5509 | min_dump_alloc = rtnl_calcit(skb, nlh); |
9ac4a169 | 5510 | |
e4202511 FW |
5511 | err = 0; |
5512 | /* need to do this before rcu_read_unlock() */ | |
5513 | if (!try_module_get(owner)) | |
5514 | err = -EPROTONOSUPPORT; | |
5515 | ||
6853dd48 FW |
5516 | rcu_read_unlock(); |
5517 | ||
97c53cac | 5518 | rtnl = net->rtnl; |
e4202511 | 5519 | if (err == 0) { |
80d326fa PNA |
5520 | struct netlink_dump_control c = { |
5521 | .dump = dumpit, | |
5522 | .min_dump_alloc = min_dump_alloc, | |
e4202511 | 5523 | .module = owner, |
80d326fa PNA |
5524 | }; |
5525 | err = netlink_dump_start(rtnl, skb, nlh, &c); | |
e4202511 FW |
5526 | /* netlink_dump_start() will keep a reference on |
5527 | * module if dump is still in progress. | |
5528 | */ | |
5529 | module_put(owner); | |
80d326fa | 5530 | } |
2907c35f | 5531 | return err; |
1da177e4 LT |
5532 | } |
5533 | ||
addf9b90 FW |
5534 | link = rtnl_get_link(family, type); |
5535 | if (!link || !link->doit) { | |
8caa38b5 | 5536 | family = PF_UNSPEC; |
addf9b90 FW |
5537 | link = rtnl_get_link(PF_UNSPEC, type); |
5538 | if (!link || !link->doit) | |
5539 | goto out_unlock; | |
8caa38b5 FW |
5540 | } |
5541 | ||
e4202511 FW |
5542 | owner = link->owner; |
5543 | if (!try_module_get(owner)) { | |
5544 | err = -EPROTONOSUPPORT; | |
5545 | goto out_unlock; | |
5546 | } | |
5547 | ||
addf9b90 | 5548 | flags = link->flags; |
62256f98 | 5549 | if (flags & RTNL_FLAG_DOIT_UNLOCKED) { |
addf9b90 | 5550 | doit = link->doit; |
62256f98 FW |
5551 | rcu_read_unlock(); |
5552 | if (doit) | |
5553 | err = doit(skb, nlh, extack); | |
e4202511 | 5554 | module_put(owner); |
62256f98 FW |
5555 | return err; |
5556 | } | |
6853dd48 | 5557 | rcu_read_unlock(); |
1da177e4 | 5558 | |
6853dd48 | 5559 | rtnl_lock(); |
addf9b90 FW |
5560 | link = rtnl_get_link(family, type); |
5561 | if (link && link->doit) | |
5562 | err = link->doit(skb, nlh, extack); | |
0cc09020 | 5563 | rtnl_unlock(); |
addf9b90 | 5564 | |
e4202511 FW |
5565 | module_put(owner); |
5566 | ||
addf9b90 FW |
5567 | return err; |
5568 | ||
5569 | out_unlock: | |
5570 | rcu_read_unlock(); | |
0cc09020 FW |
5571 | return err; |
5572 | ||
5573 | err_unlock: | |
6853dd48 | 5574 | rcu_read_unlock(); |
0cc09020 | 5575 | return -EOPNOTSUPP; |
1da177e4 LT |
5576 | } |
5577 | ||
cd40b7d3 | 5578 | static void rtnetlink_rcv(struct sk_buff *skb) |
1da177e4 | 5579 | { |
cd40b7d3 | 5580 | netlink_rcv_skb(skb, &rtnetlink_rcv_msg); |
1da177e4 LT |
5581 | } |
5582 | ||
5f729eaa JG |
5583 | static int rtnetlink_bind(struct net *net, int group) |
5584 | { | |
5585 | switch (group) { | |
5586 | case RTNLGRP_IPV4_MROUTE_R: | |
5587 | case RTNLGRP_IPV6_MROUTE_R: | |
5588 | if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) | |
5589 | return -EPERM; | |
5590 | break; | |
5591 | } | |
5592 | return 0; | |
5593 | } | |
5594 | ||
1da177e4 LT |
5595 | static int rtnetlink_event(struct notifier_block *this, unsigned long event, void *ptr) |
5596 | { | |
351638e7 | 5597 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
e9dc8653 | 5598 | |
1da177e4 | 5599 | switch (event) { |
5138e86f | 5600 | case NETDEV_REBOOT: |
8a212589 | 5601 | case NETDEV_CHANGEMTU: |
3753654e | 5602 | case NETDEV_CHANGEADDR: |
5138e86f VY |
5603 | case NETDEV_CHANGENAME: |
5604 | case NETDEV_FEAT_CHANGE: | |
5605 | case NETDEV_BONDING_FAILOVER: | |
e6e66594 | 5606 | case NETDEV_POST_TYPE_CHANGE: |
5138e86f | 5607 | case NETDEV_NOTIFY_PEERS: |
dc709f37 | 5608 | case NETDEV_CHANGEUPPER: |
5138e86f | 5609 | case NETDEV_RESEND_IGMP: |
5138e86f | 5610 | case NETDEV_CHANGEINFODATA: |
eeda3fb9 | 5611 | case NETDEV_CHANGELOWERSTATE: |
ebdcf045 | 5612 | case NETDEV_CHANGE_TX_QUEUE_LEN: |
3d3ea5af | 5613 | rtmsg_ifinfo_event(RTM_NEWLINK, dev, 0, rtnl_get_event(event), |
38e01b30 | 5614 | GFP_KERNEL, NULL, 0); |
1da177e4 LT |
5615 | break; |
5616 | default: | |
1da177e4 LT |
5617 | break; |
5618 | } | |
5619 | return NOTIFY_DONE; | |
5620 | } | |
5621 | ||
5622 | static struct notifier_block rtnetlink_dev_notifier = { | |
5623 | .notifier_call = rtnetlink_event, | |
5624 | }; | |
5625 | ||
97c53cac | 5626 | |
2c8c1e72 | 5627 | static int __net_init rtnetlink_net_init(struct net *net) |
97c53cac DL |
5628 | { |
5629 | struct sock *sk; | |
a31f2d17 PNA |
5630 | struct netlink_kernel_cfg cfg = { |
5631 | .groups = RTNLGRP_MAX, | |
5632 | .input = rtnetlink_rcv, | |
5633 | .cb_mutex = &rtnl_mutex, | |
9785e10a | 5634 | .flags = NL_CFG_F_NONROOT_RECV, |
5f729eaa | 5635 | .bind = rtnetlink_bind, |
a31f2d17 PNA |
5636 | }; |
5637 | ||
9f00d977 | 5638 | sk = netlink_kernel_create(net, NETLINK_ROUTE, &cfg); |
97c53cac DL |
5639 | if (!sk) |
5640 | return -ENOMEM; | |
97c53cac DL |
5641 | net->rtnl = sk; |
5642 | return 0; | |
5643 | } | |
5644 | ||
2c8c1e72 | 5645 | static void __net_exit rtnetlink_net_exit(struct net *net) |
97c53cac | 5646 | { |
775516bf DL |
5647 | netlink_kernel_release(net->rtnl); |
5648 | net->rtnl = NULL; | |
97c53cac DL |
5649 | } |
5650 | ||
5651 | static struct pernet_operations rtnetlink_net_ops = { | |
5652 | .init = rtnetlink_net_init, | |
5653 | .exit = rtnetlink_net_exit, | |
5654 | }; | |
5655 | ||
1da177e4 LT |
5656 | void __init rtnetlink_init(void) |
5657 | { | |
97c53cac | 5658 | if (register_pernet_subsys(&rtnetlink_net_ops)) |
1da177e4 | 5659 | panic("rtnetlink_init: cannot initialize rtnetlink\n"); |
97c53cac | 5660 | |
1da177e4 | 5661 | register_netdevice_notifier(&rtnetlink_dev_notifier); |
340d17fc | 5662 | |
c7ac8679 | 5663 | rtnl_register(PF_UNSPEC, RTM_GETLINK, rtnl_getlink, |
b97bac64 FW |
5664 | rtnl_dump_ifinfo, 0); |
5665 | rtnl_register(PF_UNSPEC, RTM_SETLINK, rtnl_setlink, NULL, 0); | |
5666 | rtnl_register(PF_UNSPEC, RTM_NEWLINK, rtnl_newlink, NULL, 0); | |
5667 | rtnl_register(PF_UNSPEC, RTM_DELLINK, rtnl_dellink, NULL, 0); | |
687ad8cc | 5668 | |
b97bac64 FW |
5669 | rtnl_register(PF_UNSPEC, RTM_GETADDR, NULL, rtnl_dump_all, 0); |
5670 | rtnl_register(PF_UNSPEC, RTM_GETROUTE, NULL, rtnl_dump_all, 0); | |
5671 | rtnl_register(PF_UNSPEC, RTM_GETNETCONF, NULL, rtnl_dump_all, 0); | |
77162022 | 5672 | |
36fbf1e5 JP |
5673 | rtnl_register(PF_UNSPEC, RTM_NEWLINKPROP, rtnl_newlinkprop, NULL, 0); |
5674 | rtnl_register(PF_UNSPEC, RTM_DELLINKPROP, rtnl_dellinkprop, NULL, 0); | |
5675 | ||
b97bac64 FW |
5676 | rtnl_register(PF_BRIDGE, RTM_NEWNEIGH, rtnl_fdb_add, NULL, 0); |
5677 | rtnl_register(PF_BRIDGE, RTM_DELNEIGH, rtnl_fdb_del, NULL, 0); | |
5b2f94b2 | 5678 | rtnl_register(PF_BRIDGE, RTM_GETNEIGH, rtnl_fdb_get, rtnl_fdb_dump, 0); |
e5a55a89 | 5679 | |
b97bac64 FW |
5680 | rtnl_register(PF_BRIDGE, RTM_GETLINK, NULL, rtnl_bridge_getlink, 0); |
5681 | rtnl_register(PF_BRIDGE, RTM_DELLINK, rtnl_bridge_dellink, NULL, 0); | |
5682 | rtnl_register(PF_BRIDGE, RTM_SETLINK, rtnl_bridge_setlink, NULL, 0); | |
10c9ead9 RP |
5683 | |
5684 | rtnl_register(PF_UNSPEC, RTM_GETSTATS, rtnl_stats_get, rtnl_stats_dump, | |
b97bac64 | 5685 | 0); |
1da177e4 | 5686 | } |