Commit | Line | Data |
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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 | 11 | * Fixes: |
d467d0bc | 12 | * Vitaly E. Lavrov RTA_OK arithmetic was wrong. |
1da177e4 LT |
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> |
dca56c30 | 56 | #include <net/devlink.h> |
cc7f5022 IS |
57 | #if IS_ENABLED(CONFIG_IPV6) |
58 | #include <net/addrconf.h> | |
59 | #endif | |
5f184269 | 60 | #include <linux/dpll.h> |
1da177e4 | 61 | |
6264f58c JK |
62 | #include "dev.h" |
63 | ||
a428afe8 | 64 | #define RTNL_MAX_TYPE 50 |
29cfb2aa | 65 | #define RTNL_SLAVE_MAX_TYPE 44 |
ccf8dbcd | 66 | |
e0d087af | 67 | struct rtnl_link { |
e2849863 TG |
68 | rtnl_doit_func doit; |
69 | rtnl_dumpit_func dumpit; | |
e4202511 | 70 | struct module *owner; |
62256f98 | 71 | unsigned int flags; |
addf9b90 | 72 | struct rcu_head rcu; |
e2849863 TG |
73 | }; |
74 | ||
6756ae4b | 75 | static DEFINE_MUTEX(rtnl_mutex); |
1da177e4 LT |
76 | |
77 | void rtnl_lock(void) | |
78 | { | |
6756ae4b | 79 | mutex_lock(&rtnl_mutex); |
1da177e4 | 80 | } |
e0d087af | 81 | EXPORT_SYMBOL(rtnl_lock); |
1da177e4 | 82 | |
79ffdfc6 KT |
83 | int rtnl_lock_killable(void) |
84 | { | |
85 | return mutex_lock_killable(&rtnl_mutex); | |
86 | } | |
87 | EXPORT_SYMBOL(rtnl_lock_killable); | |
88 | ||
1b5c5493 ED |
89 | static struct sk_buff *defer_kfree_skb_list; |
90 | void rtnl_kfree_skbs(struct sk_buff *head, struct sk_buff *tail) | |
91 | { | |
92 | if (head && tail) { | |
93 | tail->next = defer_kfree_skb_list; | |
94 | defer_kfree_skb_list = head; | |
95 | } | |
96 | } | |
97 | EXPORT_SYMBOL(rtnl_kfree_skbs); | |
98 | ||
6756ae4b | 99 | void __rtnl_unlock(void) |
1da177e4 | 100 | { |
1b5c5493 ED |
101 | struct sk_buff *head = defer_kfree_skb_list; |
102 | ||
103 | defer_kfree_skb_list = NULL; | |
104 | ||
0b5c21bb JB |
105 | /* Ensure that we didn't actually add any TODO item when __rtnl_unlock() |
106 | * is used. In some places, e.g. in cfg80211, we have code that will do | |
107 | * something like | |
108 | * rtnl_lock() | |
109 | * wiphy_lock() | |
110 | * ... | |
111 | * rtnl_unlock() | |
112 | * | |
113 | * and because netdev_run_todo() acquires the RTNL for items on the list | |
114 | * we could cause a situation such as this: | |
115 | * Thread 1 Thread 2 | |
116 | * rtnl_lock() | |
117 | * unregister_netdevice() | |
118 | * __rtnl_unlock() | |
119 | * rtnl_lock() | |
120 | * wiphy_lock() | |
121 | * rtnl_unlock() | |
122 | * netdev_run_todo() | |
123 | * __rtnl_unlock() | |
124 | * | |
125 | * // list not empty now | |
126 | * // because of thread 2 | |
127 | * rtnl_lock() | |
128 | * while (!list_empty(...)) | |
129 | * rtnl_lock() | |
130 | * wiphy_lock() | |
131 | * **** DEADLOCK **** | |
132 | * | |
133 | * However, usage of __rtnl_unlock() is rare, and so we can ensure that | |
134 | * it's not used in cases where something is added to do the list. | |
135 | */ | |
136 | WARN_ON(!list_empty(&net_todo_list)); | |
137 | ||
6756ae4b | 138 | mutex_unlock(&rtnl_mutex); |
1b5c5493 ED |
139 | |
140 | while (head) { | |
141 | struct sk_buff *next = head->next; | |
142 | ||
143 | kfree_skb(head); | |
144 | cond_resched(); | |
145 | head = next; | |
146 | } | |
1da177e4 | 147 | } |
6756ae4b | 148 | |
1da177e4 LT |
149 | void rtnl_unlock(void) |
150 | { | |
58ec3b4d | 151 | /* This fellow will unlock it for us. */ |
1da177e4 LT |
152 | netdev_run_todo(); |
153 | } | |
e0d087af | 154 | EXPORT_SYMBOL(rtnl_unlock); |
1da177e4 | 155 | |
6756ae4b SH |
156 | int rtnl_trylock(void) |
157 | { | |
158 | return mutex_trylock(&rtnl_mutex); | |
159 | } | |
e0d087af | 160 | EXPORT_SYMBOL(rtnl_trylock); |
6756ae4b | 161 | |
c9c1014b PM |
162 | int rtnl_is_locked(void) |
163 | { | |
164 | return mutex_is_locked(&rtnl_mutex); | |
165 | } | |
e0d087af | 166 | EXPORT_SYMBOL(rtnl_is_locked); |
c9c1014b | 167 | |
6f99528e VB |
168 | bool refcount_dec_and_rtnl_lock(refcount_t *r) |
169 | { | |
170 | return refcount_dec_and_mutex_lock(r, &rtnl_mutex); | |
171 | } | |
172 | EXPORT_SYMBOL(refcount_dec_and_rtnl_lock); | |
173 | ||
a898def2 | 174 | #ifdef CONFIG_PROVE_LOCKING |
0cbf3343 | 175 | bool lockdep_rtnl_is_held(void) |
a898def2 PM |
176 | { |
177 | return lockdep_is_held(&rtnl_mutex); | |
178 | } | |
179 | EXPORT_SYMBOL(lockdep_rtnl_is_held); | |
180 | #endif /* #ifdef CONFIG_PROVE_LOCKING */ | |
181 | ||
51e13685 | 182 | static struct rtnl_link __rcu *__rcu *rtnl_msg_handlers[RTNL_FAMILY_MAX + 1]; |
e2849863 TG |
183 | |
184 | static inline int rtm_msgindex(int msgtype) | |
185 | { | |
186 | int msgindex = msgtype - RTM_BASE; | |
187 | ||
188 | /* | |
189 | * msgindex < 0 implies someone tried to register a netlink | |
190 | * control code. msgindex >= RTM_NR_MSGTYPES may indicate that | |
191 | * the message type has not been added to linux/rtnetlink.h | |
192 | */ | |
193 | BUG_ON(msgindex < 0 || msgindex >= RTM_NR_MSGTYPES); | |
194 | ||
195 | return msgindex; | |
196 | } | |
197 | ||
addf9b90 FW |
198 | static struct rtnl_link *rtnl_get_link(int protocol, int msgtype) |
199 | { | |
51e13685 | 200 | struct rtnl_link __rcu **tab; |
addf9b90 FW |
201 | |
202 | if (protocol >= ARRAY_SIZE(rtnl_msg_handlers)) | |
203 | protocol = PF_UNSPEC; | |
204 | ||
205 | tab = rcu_dereference_rtnl(rtnl_msg_handlers[protocol]); | |
206 | if (!tab) | |
207 | tab = rcu_dereference_rtnl(rtnl_msg_handlers[PF_UNSPEC]); | |
208 | ||
51e13685 | 209 | return rcu_dereference_rtnl(tab[msgtype]); |
addf9b90 FW |
210 | } |
211 | ||
e4202511 FW |
212 | static int rtnl_register_internal(struct module *owner, |
213 | int protocol, int msgtype, | |
214 | rtnl_doit_func doit, rtnl_dumpit_func dumpit, | |
215 | unsigned int flags) | |
e2849863 | 216 | { |
b0e9fe1b FW |
217 | struct rtnl_link *link, *old; |
218 | struct rtnl_link __rcu **tab; | |
e2849863 | 219 | int msgindex; |
addf9b90 | 220 | int ret = -ENOBUFS; |
e2849863 | 221 | |
25239cee | 222 | BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX); |
e2849863 TG |
223 | msgindex = rtm_msgindex(msgtype); |
224 | ||
addf9b90 | 225 | rtnl_lock(); |
51e13685 | 226 | tab = rtnl_dereference(rtnl_msg_handlers[protocol]); |
e2849863 | 227 | if (tab == NULL) { |
addf9b90 FW |
228 | tab = kcalloc(RTM_NR_MSGTYPES, sizeof(void *), GFP_KERNEL); |
229 | if (!tab) | |
230 | goto unlock; | |
e2849863 | 231 | |
addf9b90 | 232 | /* ensures we see the 0 stores */ |
6853dd48 | 233 | rcu_assign_pointer(rtnl_msg_handlers[protocol], tab); |
e2849863 TG |
234 | } |
235 | ||
addf9b90 FW |
236 | old = rtnl_dereference(tab[msgindex]); |
237 | if (old) { | |
238 | link = kmemdup(old, sizeof(*old), GFP_KERNEL); | |
239 | if (!link) | |
240 | goto unlock; | |
241 | } else { | |
242 | link = kzalloc(sizeof(*link), GFP_KERNEL); | |
243 | if (!link) | |
244 | goto unlock; | |
245 | } | |
246 | ||
e4202511 FW |
247 | WARN_ON(link->owner && link->owner != owner); |
248 | link->owner = owner; | |
249 | ||
addf9b90 | 250 | WARN_ON(doit && link->doit && link->doit != doit); |
e2849863 | 251 | if (doit) |
addf9b90 FW |
252 | link->doit = doit; |
253 | WARN_ON(dumpit && link->dumpit && link->dumpit != dumpit); | |
e2849863 | 254 | if (dumpit) |
addf9b90 | 255 | link->dumpit = dumpit; |
e2849863 | 256 | |
a6cec0bc NA |
257 | WARN_ON(rtnl_msgtype_kind(msgtype) != RTNL_KIND_DEL && |
258 | (flags & RTNL_FLAG_BULK_DEL_SUPPORTED)); | |
addf9b90 FW |
259 | link->flags |= flags; |
260 | ||
261 | /* publish protocol:msgtype */ | |
262 | rcu_assign_pointer(tab[msgindex], link); | |
263 | ret = 0; | |
264 | if (old) | |
265 | kfree_rcu(old, rcu); | |
266 | unlock: | |
267 | rtnl_unlock(); | |
268 | return ret; | |
e2849863 | 269 | } |
e4202511 FW |
270 | |
271 | /** | |
272 | * rtnl_register_module - Register a rtnetlink message type | |
273 | * | |
274 | * @owner: module registering the hook (THIS_MODULE) | |
275 | * @protocol: Protocol family or PF_UNSPEC | |
276 | * @msgtype: rtnetlink message type | |
277 | * @doit: Function pointer called for each request message | |
278 | * @dumpit: Function pointer called for each dump request (NLM_F_DUMP) message | |
d467d0bc | 279 | * @flags: rtnl_link_flags to modify behaviour of doit/dumpit functions |
e4202511 FW |
280 | * |
281 | * Like rtnl_register, but for use by removable modules. | |
282 | */ | |
283 | int rtnl_register_module(struct module *owner, | |
284 | int protocol, int msgtype, | |
285 | rtnl_doit_func doit, rtnl_dumpit_func dumpit, | |
286 | unsigned int flags) | |
287 | { | |
288 | return rtnl_register_internal(owner, protocol, msgtype, | |
289 | doit, dumpit, flags); | |
290 | } | |
291 | EXPORT_SYMBOL_GPL(rtnl_register_module); | |
292 | ||
293 | /** | |
16feebcf | 294 | * rtnl_register - Register a rtnetlink message type |
e4202511 FW |
295 | * @protocol: Protocol family or PF_UNSPEC |
296 | * @msgtype: rtnetlink message type | |
297 | * @doit: Function pointer called for each request message | |
298 | * @dumpit: Function pointer called for each dump request (NLM_F_DUMP) message | |
d467d0bc | 299 | * @flags: rtnl_link_flags to modify behaviour of doit/dumpit functions |
e4202511 FW |
300 | * |
301 | * Registers the specified function pointers (at least one of them has | |
302 | * to be non-NULL) to be called whenever a request message for the | |
303 | * specified protocol family and message type is received. | |
304 | * | |
305 | * The special protocol family PF_UNSPEC may be used to define fallback | |
306 | * function pointers for the case when no entry for the specific protocol | |
307 | * family exists. | |
e2849863 TG |
308 | */ |
309 | void rtnl_register(int protocol, int msgtype, | |
c7ac8679 | 310 | rtnl_doit_func doit, rtnl_dumpit_func dumpit, |
b97bac64 | 311 | unsigned int flags) |
e2849863 | 312 | { |
16feebcf FW |
313 | int err; |
314 | ||
315 | err = rtnl_register_internal(NULL, protocol, msgtype, doit, dumpit, | |
316 | flags); | |
317 | if (err) | |
318 | pr_err("Unable to register rtnetlink message handler, " | |
319 | "protocol = %d, message type = %d\n", protocol, msgtype); | |
e2849863 | 320 | } |
e2849863 TG |
321 | |
322 | /** | |
323 | * rtnl_unregister - Unregister a rtnetlink message type | |
324 | * @protocol: Protocol family or PF_UNSPEC | |
325 | * @msgtype: rtnetlink message type | |
326 | * | |
327 | * Returns 0 on success or a negative error code. | |
328 | */ | |
329 | int rtnl_unregister(int protocol, int msgtype) | |
330 | { | |
51e13685 JK |
331 | struct rtnl_link __rcu **tab; |
332 | struct rtnl_link *link; | |
e2849863 TG |
333 | int msgindex; |
334 | ||
25239cee | 335 | BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX); |
e2849863 TG |
336 | msgindex = rtm_msgindex(msgtype); |
337 | ||
6853dd48 | 338 | rtnl_lock(); |
addf9b90 FW |
339 | tab = rtnl_dereference(rtnl_msg_handlers[protocol]); |
340 | if (!tab) { | |
6853dd48 | 341 | rtnl_unlock(); |
e2849863 | 342 | return -ENOENT; |
6853dd48 | 343 | } |
e2849863 | 344 | |
17452347 | 345 | link = rcu_replace_pointer_rtnl(tab[msgindex], NULL); |
6853dd48 | 346 | rtnl_unlock(); |
e2849863 | 347 | |
addf9b90 FW |
348 | kfree_rcu(link, rcu); |
349 | ||
e2849863 TG |
350 | return 0; |
351 | } | |
e2849863 TG |
352 | EXPORT_SYMBOL_GPL(rtnl_unregister); |
353 | ||
354 | /** | |
355 | * rtnl_unregister_all - Unregister all rtnetlink message type of a protocol | |
356 | * @protocol : Protocol family or PF_UNSPEC | |
357 | * | |
358 | * Identical to calling rtnl_unregster() for all registered message types | |
359 | * of a certain protocol family. | |
360 | */ | |
361 | void rtnl_unregister_all(int protocol) | |
362 | { | |
51e13685 JK |
363 | struct rtnl_link __rcu **tab; |
364 | struct rtnl_link *link; | |
addf9b90 | 365 | int msgindex; |
019a3169 | 366 | |
25239cee | 367 | BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX); |
e2849863 | 368 | |
019a3169 | 369 | rtnl_lock(); |
17452347 | 370 | tab = rcu_replace_pointer_rtnl(rtnl_msg_handlers[protocol], NULL); |
f707ef61 SD |
371 | if (!tab) { |
372 | rtnl_unlock(); | |
373 | return; | |
374 | } | |
addf9b90 | 375 | for (msgindex = 0; msgindex < RTM_NR_MSGTYPES; msgindex++) { |
17452347 | 376 | link = rcu_replace_pointer_rtnl(tab[msgindex], NULL); |
addf9b90 FW |
377 | kfree_rcu(link, rcu); |
378 | } | |
019a3169 FW |
379 | rtnl_unlock(); |
380 | ||
6853dd48 FW |
381 | synchronize_net(); |
382 | ||
addf9b90 | 383 | kfree(tab); |
e2849863 | 384 | } |
e2849863 | 385 | EXPORT_SYMBOL_GPL(rtnl_unregister_all); |
1da177e4 | 386 | |
38f7b870 PM |
387 | static LIST_HEAD(link_ops); |
388 | ||
c63044f0 ED |
389 | static const struct rtnl_link_ops *rtnl_link_ops_get(const char *kind) |
390 | { | |
391 | const struct rtnl_link_ops *ops; | |
392 | ||
393 | list_for_each_entry(ops, &link_ops, list) { | |
394 | if (!strcmp(ops->kind, kind)) | |
395 | return ops; | |
396 | } | |
397 | return NULL; | |
398 | } | |
399 | ||
38f7b870 PM |
400 | /** |
401 | * __rtnl_link_register - Register rtnl_link_ops with rtnetlink. | |
402 | * @ops: struct rtnl_link_ops * to register | |
403 | * | |
404 | * The caller must hold the rtnl_mutex. This function should be used | |
405 | * by drivers that create devices during module initialization. It | |
406 | * must be called before registering the devices. | |
407 | * | |
408 | * Returns 0 on success or a negative error code. | |
409 | */ | |
410 | int __rtnl_link_register(struct rtnl_link_ops *ops) | |
411 | { | |
c63044f0 ED |
412 | if (rtnl_link_ops_get(ops->kind)) |
413 | return -EEXIST; | |
414 | ||
8c713dc9 | 415 | /* The check for alloc/setup is here because if ops |
b0ab2fab JP |
416 | * does not have that filled up, it is not possible |
417 | * to use the ops for creating device. So do not | |
418 | * fill up dellink as well. That disables rtnl_dellink. | |
419 | */ | |
8c713dc9 | 420 | if ((ops->alloc || ops->setup) && !ops->dellink) |
23289a37 | 421 | ops->dellink = unregister_netdevice_queue; |
2d85cba2 | 422 | |
38f7b870 PM |
423 | list_add_tail(&ops->list, &link_ops); |
424 | return 0; | |
425 | } | |
38f7b870 PM |
426 | EXPORT_SYMBOL_GPL(__rtnl_link_register); |
427 | ||
428 | /** | |
429 | * rtnl_link_register - Register rtnl_link_ops with rtnetlink. | |
430 | * @ops: struct rtnl_link_ops * to register | |
431 | * | |
432 | * Returns 0 on success or a negative error code. | |
433 | */ | |
434 | int rtnl_link_register(struct rtnl_link_ops *ops) | |
435 | { | |
436 | int err; | |
437 | ||
ccf8dbcd KC |
438 | /* Sanity-check max sizes to avoid stack buffer overflow. */ |
439 | if (WARN_ON(ops->maxtype > RTNL_MAX_TYPE || | |
440 | ops->slave_maxtype > RTNL_SLAVE_MAX_TYPE)) | |
441 | return -EINVAL; | |
442 | ||
38f7b870 PM |
443 | rtnl_lock(); |
444 | err = __rtnl_link_register(ops); | |
445 | rtnl_unlock(); | |
446 | return err; | |
447 | } | |
38f7b870 PM |
448 | EXPORT_SYMBOL_GPL(rtnl_link_register); |
449 | ||
669f87ba PE |
450 | static void __rtnl_kill_links(struct net *net, struct rtnl_link_ops *ops) |
451 | { | |
452 | struct net_device *dev; | |
23289a37 ED |
453 | LIST_HEAD(list_kill); |
454 | ||
669f87ba | 455 | for_each_netdev(net, dev) { |
23289a37 ED |
456 | if (dev->rtnl_link_ops == ops) |
457 | ops->dellink(dev, &list_kill); | |
669f87ba | 458 | } |
23289a37 | 459 | unregister_netdevice_many(&list_kill); |
669f87ba PE |
460 | } |
461 | ||
38f7b870 PM |
462 | /** |
463 | * __rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink. | |
464 | * @ops: struct rtnl_link_ops * to unregister | |
465 | * | |
554873e5 KT |
466 | * The caller must hold the rtnl_mutex and guarantee net_namespace_list |
467 | * integrity (hold pernet_ops_rwsem for writing to close the race | |
468 | * with setup_net() and cleanup_net()). | |
38f7b870 PM |
469 | */ |
470 | void __rtnl_link_unregister(struct rtnl_link_ops *ops) | |
471 | { | |
881d966b | 472 | struct net *net; |
2d85cba2 | 473 | |
881d966b | 474 | for_each_net(net) { |
669f87ba | 475 | __rtnl_kill_links(net, ops); |
2d85cba2 | 476 | } |
38f7b870 PM |
477 | list_del(&ops->list); |
478 | } | |
38f7b870 PM |
479 | EXPORT_SYMBOL_GPL(__rtnl_link_unregister); |
480 | ||
200b916f CW |
481 | /* Return with the rtnl_lock held when there are no network |
482 | * devices unregistering in any network namespace. | |
483 | */ | |
484 | static void rtnl_lock_unregistering_all(void) | |
485 | { | |
ff960a73 | 486 | DEFINE_WAIT_FUNC(wait, woken_wake_function); |
200b916f | 487 | |
ff960a73 | 488 | add_wait_queue(&netdev_unregistering_wq, &wait); |
200b916f | 489 | for (;;) { |
200b916f | 490 | rtnl_lock(); |
f0b07bb1 KT |
491 | /* We held write locked pernet_ops_rwsem, and parallel |
492 | * setup_net() and cleanup_net() are not possible. | |
493 | */ | |
ffabe98c | 494 | if (!atomic_read(&dev_unreg_count)) |
200b916f CW |
495 | break; |
496 | __rtnl_unlock(); | |
ff960a73 PZ |
497 | |
498 | wait_woken(&wait, TASK_UNINTERRUPTIBLE, MAX_SCHEDULE_TIMEOUT); | |
200b916f | 499 | } |
ff960a73 | 500 | remove_wait_queue(&netdev_unregistering_wq, &wait); |
200b916f CW |
501 | } |
502 | ||
38f7b870 PM |
503 | /** |
504 | * rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink. | |
505 | * @ops: struct rtnl_link_ops * to unregister | |
506 | */ | |
507 | void rtnl_link_unregister(struct rtnl_link_ops *ops) | |
508 | { | |
8518e9bb | 509 | /* Close the race with setup_net() and cleanup_net() */ |
4420bf21 | 510 | down_write(&pernet_ops_rwsem); |
200b916f | 511 | rtnl_lock_unregistering_all(); |
38f7b870 PM |
512 | __rtnl_link_unregister(ops); |
513 | rtnl_unlock(); | |
4420bf21 | 514 | up_write(&pernet_ops_rwsem); |
38f7b870 | 515 | } |
38f7b870 PM |
516 | EXPORT_SYMBOL_GPL(rtnl_link_unregister); |
517 | ||
ba7d49b1 JP |
518 | static size_t rtnl_link_get_slave_info_data_size(const struct net_device *dev) |
519 | { | |
520 | struct net_device *master_dev; | |
521 | const struct rtnl_link_ops *ops; | |
8515ae38 | 522 | size_t size = 0; |
ba7d49b1 | 523 | |
8515ae38 FW |
524 | rcu_read_lock(); |
525 | ||
526 | master_dev = netdev_master_upper_dev_get_rcu((struct net_device *)dev); | |
ba7d49b1 | 527 | if (!master_dev) |
8515ae38 FW |
528 | goto out; |
529 | ||
ba7d49b1 | 530 | ops = master_dev->rtnl_link_ops; |
6049f253 | 531 | if (!ops || !ops->get_slave_size) |
8515ae38 | 532 | goto out; |
ba7d49b1 | 533 | /* IFLA_INFO_SLAVE_DATA + nested data */ |
8515ae38 | 534 | size = nla_total_size(sizeof(struct nlattr)) + |
ba7d49b1 | 535 | ops->get_slave_size(master_dev, dev); |
8515ae38 FW |
536 | |
537 | out: | |
538 | rcu_read_unlock(); | |
539 | return size; | |
ba7d49b1 JP |
540 | } |
541 | ||
38f7b870 PM |
542 | static size_t rtnl_link_get_size(const struct net_device *dev) |
543 | { | |
544 | const struct rtnl_link_ops *ops = dev->rtnl_link_ops; | |
545 | size_t size; | |
546 | ||
547 | if (!ops) | |
548 | return 0; | |
549 | ||
369cf77a TG |
550 | size = nla_total_size(sizeof(struct nlattr)) + /* IFLA_LINKINFO */ |
551 | nla_total_size(strlen(ops->kind) + 1); /* IFLA_INFO_KIND */ | |
38f7b870 PM |
552 | |
553 | if (ops->get_size) | |
554 | /* IFLA_INFO_DATA + nested data */ | |
369cf77a | 555 | size += nla_total_size(sizeof(struct nlattr)) + |
38f7b870 PM |
556 | ops->get_size(dev); |
557 | ||
558 | if (ops->get_xstats_size) | |
369cf77a TG |
559 | /* IFLA_INFO_XSTATS */ |
560 | size += nla_total_size(ops->get_xstats_size(dev)); | |
38f7b870 | 561 | |
ba7d49b1 JP |
562 | size += rtnl_link_get_slave_info_data_size(dev); |
563 | ||
38f7b870 PM |
564 | return size; |
565 | } | |
566 | ||
f8ff182c TG |
567 | static LIST_HEAD(rtnl_af_ops); |
568 | ||
569 | static const struct rtnl_af_ops *rtnl_af_lookup(const int family) | |
570 | { | |
571 | const struct rtnl_af_ops *ops; | |
572 | ||
a100243d CW |
573 | ASSERT_RTNL(); |
574 | ||
575 | list_for_each_entry(ops, &rtnl_af_ops, list) { | |
f8ff182c TG |
576 | if (ops->family == family) |
577 | return ops; | |
578 | } | |
579 | ||
580 | return NULL; | |
581 | } | |
582 | ||
f8ff182c TG |
583 | /** |
584 | * rtnl_af_register - Register rtnl_af_ops with rtnetlink. | |
585 | * @ops: struct rtnl_af_ops * to register | |
586 | * | |
587 | * Returns 0 on success or a negative error code. | |
588 | */ | |
3678a9d8 | 589 | void rtnl_af_register(struct rtnl_af_ops *ops) |
f8ff182c | 590 | { |
f8ff182c | 591 | rtnl_lock(); |
5fa85a09 | 592 | list_add_tail_rcu(&ops->list, &rtnl_af_ops); |
f8ff182c | 593 | rtnl_unlock(); |
f8ff182c TG |
594 | } |
595 | EXPORT_SYMBOL_GPL(rtnl_af_register); | |
596 | ||
f8ff182c TG |
597 | /** |
598 | * rtnl_af_unregister - Unregister rtnl_af_ops from rtnetlink. | |
599 | * @ops: struct rtnl_af_ops * to unregister | |
600 | */ | |
601 | void rtnl_af_unregister(struct rtnl_af_ops *ops) | |
602 | { | |
603 | rtnl_lock(); | |
5fa85a09 | 604 | list_del_rcu(&ops->list); |
f8ff182c | 605 | rtnl_unlock(); |
5fa85a09 FW |
606 | |
607 | synchronize_rcu(); | |
f8ff182c TG |
608 | } |
609 | EXPORT_SYMBOL_GPL(rtnl_af_unregister); | |
610 | ||
b1974ed0 AR |
611 | static size_t rtnl_link_get_af_size(const struct net_device *dev, |
612 | u32 ext_filter_mask) | |
f8ff182c TG |
613 | { |
614 | struct rtnl_af_ops *af_ops; | |
615 | size_t size; | |
616 | ||
617 | /* IFLA_AF_SPEC */ | |
618 | size = nla_total_size(sizeof(struct nlattr)); | |
619 | ||
5fa85a09 FW |
620 | rcu_read_lock(); |
621 | list_for_each_entry_rcu(af_ops, &rtnl_af_ops, list) { | |
f8ff182c TG |
622 | if (af_ops->get_link_af_size) { |
623 | /* AF_* + nested data */ | |
624 | size += nla_total_size(sizeof(struct nlattr)) + | |
b1974ed0 | 625 | af_ops->get_link_af_size(dev, ext_filter_mask); |
f8ff182c TG |
626 | } |
627 | } | |
5fa85a09 | 628 | rcu_read_unlock(); |
f8ff182c TG |
629 | |
630 | return size; | |
631 | } | |
632 | ||
ba7d49b1 | 633 | static bool rtnl_have_link_slave_info(const struct net_device *dev) |
38f7b870 | 634 | { |
ba7d49b1 | 635 | struct net_device *master_dev; |
4c82a95e | 636 | bool ret = false; |
38f7b870 | 637 | |
4c82a95e FW |
638 | rcu_read_lock(); |
639 | ||
640 | master_dev = netdev_master_upper_dev_get_rcu((struct net_device *)dev); | |
813f020c | 641 | if (master_dev && master_dev->rtnl_link_ops) |
4c82a95e FW |
642 | ret = true; |
643 | rcu_read_unlock(); | |
644 | return ret; | |
ba7d49b1 JP |
645 | } |
646 | ||
647 | static int rtnl_link_slave_info_fill(struct sk_buff *skb, | |
648 | const struct net_device *dev) | |
649 | { | |
650 | struct net_device *master_dev; | |
651 | const struct rtnl_link_ops *ops; | |
652 | struct nlattr *slave_data; | |
653 | int err; | |
38f7b870 | 654 | |
ba7d49b1 JP |
655 | master_dev = netdev_master_upper_dev_get((struct net_device *) dev); |
656 | if (!master_dev) | |
657 | return 0; | |
658 | ops = master_dev->rtnl_link_ops; | |
659 | if (!ops) | |
660 | return 0; | |
661 | if (nla_put_string(skb, IFLA_INFO_SLAVE_KIND, ops->kind) < 0) | |
662 | return -EMSGSIZE; | |
663 | if (ops->fill_slave_info) { | |
ae0be8de | 664 | slave_data = nla_nest_start_noflag(skb, IFLA_INFO_SLAVE_DATA); |
ba7d49b1 JP |
665 | if (!slave_data) |
666 | return -EMSGSIZE; | |
667 | err = ops->fill_slave_info(skb, master_dev, dev); | |
668 | if (err < 0) | |
669 | goto err_cancel_slave_data; | |
670 | nla_nest_end(skb, slave_data); | |
671 | } | |
672 | return 0; | |
673 | ||
674 | err_cancel_slave_data: | |
675 | nla_nest_cancel(skb, slave_data); | |
676 | return err; | |
677 | } | |
678 | ||
679 | static int rtnl_link_info_fill(struct sk_buff *skb, | |
680 | const struct net_device *dev) | |
681 | { | |
682 | const struct rtnl_link_ops *ops = dev->rtnl_link_ops; | |
683 | struct nlattr *data; | |
684 | int err; | |
685 | ||
686 | if (!ops) | |
687 | return 0; | |
38f7b870 | 688 | if (nla_put_string(skb, IFLA_INFO_KIND, ops->kind) < 0) |
ba7d49b1 | 689 | return -EMSGSIZE; |
38f7b870 PM |
690 | if (ops->fill_xstats) { |
691 | err = ops->fill_xstats(skb, dev); | |
692 | if (err < 0) | |
ba7d49b1 | 693 | return err; |
38f7b870 PM |
694 | } |
695 | if (ops->fill_info) { | |
ae0be8de | 696 | data = nla_nest_start_noflag(skb, IFLA_INFO_DATA); |
ba7d49b1 JP |
697 | if (data == NULL) |
698 | return -EMSGSIZE; | |
38f7b870 PM |
699 | err = ops->fill_info(skb, dev); |
700 | if (err < 0) | |
701 | goto err_cancel_data; | |
702 | nla_nest_end(skb, data); | |
703 | } | |
38f7b870 PM |
704 | return 0; |
705 | ||
706 | err_cancel_data: | |
707 | nla_nest_cancel(skb, data); | |
ba7d49b1 JP |
708 | return err; |
709 | } | |
710 | ||
711 | static int rtnl_link_fill(struct sk_buff *skb, const struct net_device *dev) | |
712 | { | |
713 | struct nlattr *linkinfo; | |
714 | int err = -EMSGSIZE; | |
715 | ||
ae0be8de | 716 | linkinfo = nla_nest_start_noflag(skb, IFLA_LINKINFO); |
ba7d49b1 JP |
717 | if (linkinfo == NULL) |
718 | goto out; | |
719 | ||
720 | err = rtnl_link_info_fill(skb, dev); | |
721 | if (err < 0) | |
722 | goto err_cancel_link; | |
723 | ||
724 | err = rtnl_link_slave_info_fill(skb, dev); | |
725 | if (err < 0) | |
726 | goto err_cancel_link; | |
727 | ||
728 | nla_nest_end(skb, linkinfo); | |
729 | return 0; | |
730 | ||
38f7b870 PM |
731 | err_cancel_link: |
732 | nla_nest_cancel(skb, linkinfo); | |
733 | out: | |
734 | return err; | |
735 | } | |
736 | ||
95c96174 | 737 | int rtnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, unsigned int group, int echo) |
1da177e4 | 738 | { |
97c53cac | 739 | struct sock *rtnl = net->rtnl; |
cfdf0d9a YD |
740 | |
741 | return nlmsg_notify(rtnl, skb, pid, group, echo, GFP_KERNEL); | |
1da177e4 LT |
742 | } |
743 | ||
97c53cac | 744 | int rtnl_unicast(struct sk_buff *skb, struct net *net, u32 pid) |
2942e900 | 745 | { |
97c53cac DL |
746 | struct sock *rtnl = net->rtnl; |
747 | ||
2942e900 TG |
748 | return nlmsg_unicast(rtnl, skb, pid); |
749 | } | |
e0d087af | 750 | EXPORT_SYMBOL(rtnl_unicast); |
2942e900 | 751 | |
1ce85fe4 | 752 | void rtnl_notify(struct sk_buff *skb, struct net *net, u32 pid, u32 group, |
1d997f10 | 753 | const struct nlmsghdr *nlh, gfp_t flags) |
97676b6b | 754 | { |
97c53cac | 755 | struct sock *rtnl = net->rtnl; |
97676b6b | 756 | |
f9b282b3 | 757 | nlmsg_notify(rtnl, skb, pid, group, nlmsg_report(nlh), flags); |
97676b6b | 758 | } |
e0d087af | 759 | EXPORT_SYMBOL(rtnl_notify); |
97676b6b | 760 | |
97c53cac | 761 | void rtnl_set_sk_err(struct net *net, u32 group, int error) |
97676b6b | 762 | { |
97c53cac DL |
763 | struct sock *rtnl = net->rtnl; |
764 | ||
97676b6b TG |
765 | netlink_set_err(rtnl, 0, group, error); |
766 | } | |
e0d087af | 767 | EXPORT_SYMBOL(rtnl_set_sk_err); |
97676b6b | 768 | |
1da177e4 LT |
769 | int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics) |
770 | { | |
2d7202bf TG |
771 | struct nlattr *mx; |
772 | int i, valid = 0; | |
773 | ||
c22a133a DA |
774 | /* nothing is dumped for dst_default_metrics, so just skip the loop */ |
775 | if (metrics == dst_default_metrics.metrics) | |
776 | return 0; | |
777 | ||
ae0be8de | 778 | mx = nla_nest_start_noflag(skb, RTA_METRICS); |
2d7202bf TG |
779 | if (mx == NULL) |
780 | return -ENOBUFS; | |
781 | ||
782 | for (i = 0; i < RTAX_MAX; i++) { | |
783 | if (metrics[i]) { | |
ea697639 DB |
784 | if (i == RTAX_CC_ALGO - 1) { |
785 | char tmp[TCP_CA_NAME_MAX], *name; | |
786 | ||
787 | name = tcp_ca_get_name_by_key(metrics[i], tmp); | |
788 | if (!name) | |
789 | continue; | |
790 | if (nla_put_string(skb, i + 1, name)) | |
791 | goto nla_put_failure; | |
c3a8d947 DB |
792 | } else if (i == RTAX_FEATURES - 1) { |
793 | u32 user_features = metrics[i] & RTAX_FEATURE_MASK; | |
794 | ||
f8edcd12 PS |
795 | if (!user_features) |
796 | continue; | |
c3a8d947 DB |
797 | BUILD_BUG_ON(RTAX_FEATURE_MASK & DST_FEATURE_MASK); |
798 | if (nla_put_u32(skb, i + 1, user_features)) | |
799 | goto nla_put_failure; | |
ea697639 DB |
800 | } else { |
801 | if (nla_put_u32(skb, i + 1, metrics[i])) | |
802 | goto nla_put_failure; | |
803 | } | |
2d7202bf | 804 | valid++; |
2d7202bf | 805 | } |
1da177e4 | 806 | } |
1da177e4 | 807 | |
a57d27fc DM |
808 | if (!valid) { |
809 | nla_nest_cancel(skb, mx); | |
810 | return 0; | |
811 | } | |
2d7202bf TG |
812 | |
813 | return nla_nest_end(skb, mx); | |
814 | ||
815 | nla_put_failure: | |
bc3ed28c TG |
816 | nla_nest_cancel(skb, mx); |
817 | return -EMSGSIZE; | |
1da177e4 | 818 | } |
e0d087af | 819 | EXPORT_SYMBOL(rtnetlink_put_metrics); |
1da177e4 | 820 | |
e3703b3d | 821 | int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst, u32 id, |
87a50699 | 822 | long expires, u32 error) |
e3703b3d TG |
823 | { |
824 | struct rta_cacheinfo ci = { | |
e3703b3d TG |
825 | .rta_error = error, |
826 | .rta_id = id, | |
e3703b3d TG |
827 | }; |
828 | ||
3940746d DA |
829 | if (dst) { |
830 | ci.rta_lastuse = jiffies_delta_to_clock_t(jiffies - dst->lastuse); | |
831 | ci.rta_used = dst->__use; | |
bc9d3a9f | 832 | ci.rta_clntref = rcuref_read(&dst->__rcuref); |
3940746d | 833 | } |
8253947e LW |
834 | if (expires) { |
835 | unsigned long clock; | |
e3703b3d | 836 | |
8253947e LW |
837 | clock = jiffies_to_clock_t(abs(expires)); |
838 | clock = min_t(unsigned long, clock, INT_MAX); | |
839 | ci.rta_expires = (expires > 0) ? clock : -clock; | |
840 | } | |
e3703b3d TG |
841 | return nla_put(skb, RTA_CACHEINFO, sizeof(ci), &ci); |
842 | } | |
e3703b3d | 843 | EXPORT_SYMBOL_GPL(rtnl_put_cacheinfo); |
1da177e4 | 844 | |
6a2968ee ED |
845 | void netdev_set_operstate(struct net_device *dev, int newstate) |
846 | { | |
847 | unsigned int old = READ_ONCE(dev->operstate); | |
848 | ||
849 | do { | |
850 | if (old == newstate) | |
851 | return; | |
852 | } while (!try_cmpxchg(&dev->operstate, &old, newstate)); | |
853 | ||
854 | netdev_state_change(dev); | |
855 | } | |
856 | EXPORT_SYMBOL(netdev_set_operstate); | |
857 | ||
93b2d4a2 | 858 | static void set_operstate(struct net_device *dev, unsigned char transition) |
b00055aa | 859 | { |
6a2968ee | 860 | unsigned char operstate = READ_ONCE(dev->operstate); |
b00055aa | 861 | |
e0d087af | 862 | switch (transition) { |
b00055aa SR |
863 | case IF_OPER_UP: |
864 | if ((operstate == IF_OPER_DORMANT || | |
eec517cd | 865 | operstate == IF_OPER_TESTING || |
b00055aa | 866 | operstate == IF_OPER_UNKNOWN) && |
eec517cd | 867 | !netif_dormant(dev) && !netif_testing(dev)) |
b00055aa SR |
868 | operstate = IF_OPER_UP; |
869 | break; | |
870 | ||
eec517cd | 871 | case IF_OPER_TESTING: |
abbc7928 | 872 | if (netif_oper_up(dev)) |
eec517cd AL |
873 | operstate = IF_OPER_TESTING; |
874 | break; | |
875 | ||
b00055aa | 876 | case IF_OPER_DORMANT: |
abbc7928 | 877 | if (netif_oper_up(dev)) |
b00055aa SR |
878 | operstate = IF_OPER_DORMANT; |
879 | break; | |
3ff50b79 | 880 | } |
b00055aa | 881 | |
6a2968ee | 882 | netdev_set_operstate(dev, operstate); |
b00055aa SR |
883 | } |
884 | ||
b1beb681 JB |
885 | static unsigned int rtnl_dev_get_flags(const struct net_device *dev) |
886 | { | |
887 | return (dev->flags & ~(IFF_PROMISC | IFF_ALLMULTI)) | | |
888 | (dev->gflags & (IFF_PROMISC | IFF_ALLMULTI)); | |
889 | } | |
890 | ||
3729d502 PM |
891 | static unsigned int rtnl_dev_combine_flags(const struct net_device *dev, |
892 | const struct ifinfomsg *ifm) | |
893 | { | |
894 | unsigned int flags = ifm->ifi_flags; | |
895 | ||
896 | /* bugwards compatibility: ifi_change == 0 is treated as ~0 */ | |
897 | if (ifm->ifi_change) | |
898 | flags = (flags & ifm->ifi_change) | | |
b1beb681 | 899 | (rtnl_dev_get_flags(dev) & ~ifm->ifi_change); |
3729d502 PM |
900 | |
901 | return flags; | |
902 | } | |
903 | ||
b60c5115 | 904 | static void copy_rtnl_link_stats(struct rtnl_link_stats *a, |
be1f3c2c | 905 | const struct rtnl_link_stats64 *b) |
1da177e4 | 906 | { |
b60c5115 TG |
907 | a->rx_packets = b->rx_packets; |
908 | a->tx_packets = b->tx_packets; | |
909 | a->rx_bytes = b->rx_bytes; | |
910 | a->tx_bytes = b->tx_bytes; | |
911 | a->rx_errors = b->rx_errors; | |
912 | a->tx_errors = b->tx_errors; | |
913 | a->rx_dropped = b->rx_dropped; | |
914 | a->tx_dropped = b->tx_dropped; | |
915 | ||
916 | a->multicast = b->multicast; | |
917 | a->collisions = b->collisions; | |
918 | ||
919 | a->rx_length_errors = b->rx_length_errors; | |
920 | a->rx_over_errors = b->rx_over_errors; | |
921 | a->rx_crc_errors = b->rx_crc_errors; | |
922 | a->rx_frame_errors = b->rx_frame_errors; | |
923 | a->rx_fifo_errors = b->rx_fifo_errors; | |
924 | a->rx_missed_errors = b->rx_missed_errors; | |
925 | ||
926 | a->tx_aborted_errors = b->tx_aborted_errors; | |
927 | a->tx_carrier_errors = b->tx_carrier_errors; | |
928 | a->tx_fifo_errors = b->tx_fifo_errors; | |
929 | a->tx_heartbeat_errors = b->tx_heartbeat_errors; | |
930 | a->tx_window_errors = b->tx_window_errors; | |
931 | ||
932 | a->rx_compressed = b->rx_compressed; | |
933 | a->tx_compressed = b->tx_compressed; | |
6e7333d3 JW |
934 | |
935 | a->rx_nohandler = b->rx_nohandler; | |
10708f37 JE |
936 | } |
937 | ||
c02db8c6 | 938 | /* All VF info */ |
115c9b81 GR |
939 | static inline int rtnl_vfinfo_size(const struct net_device *dev, |
940 | u32 ext_filter_mask) | |
ebc08a6f | 941 | { |
9af15c38 | 942 | if (dev->dev.parent && (ext_filter_mask & RTEXT_FILTER_VF)) { |
c02db8c6 | 943 | int num_vfs = dev_num_vf(dev->dev.parent); |
7e75f74a | 944 | size_t size = nla_total_size(0); |
045de01a | 945 | size += num_vfs * |
7e75f74a SD |
946 | (nla_total_size(0) + |
947 | nla_total_size(sizeof(struct ifla_vf_mac)) + | |
75345f88 | 948 | nla_total_size(sizeof(struct ifla_vf_broadcast)) + |
7e75f74a SD |
949 | nla_total_size(sizeof(struct ifla_vf_vlan)) + |
950 | nla_total_size(0) + /* nest IFLA_VF_VLAN_LIST */ | |
79aab093 MS |
951 | nla_total_size(MAX_VLAN_LIST_LEN * |
952 | sizeof(struct ifla_vf_vlan_info)) + | |
ed616689 | 953 | nla_total_size(sizeof(struct ifla_vf_spoofchk)) + |
7e75f74a | 954 | nla_total_size(sizeof(struct ifla_vf_tx_rate)) + |
945a3676 | 955 | nla_total_size(sizeof(struct ifla_vf_rate)) + |
01a3d796 | 956 | nla_total_size(sizeof(struct ifla_vf_link_state)) + |
3b766cd8 | 957 | nla_total_size(sizeof(struct ifla_vf_rss_query_en)) + |
dd461d6a | 958 | nla_total_size(sizeof(struct ifla_vf_trust))); |
fa0e21fa EP |
959 | if (~ext_filter_mask & RTEXT_FILTER_SKIP_STATS) { |
960 | size += num_vfs * | |
961 | (nla_total_size(0) + /* nest IFLA_VF_STATS */ | |
962 | /* IFLA_VF_STATS_RX_PACKETS */ | |
963 | nla_total_size_64bit(sizeof(__u64)) + | |
964 | /* IFLA_VF_STATS_TX_PACKETS */ | |
965 | nla_total_size_64bit(sizeof(__u64)) + | |
966 | /* IFLA_VF_STATS_RX_BYTES */ | |
967 | nla_total_size_64bit(sizeof(__u64)) + | |
968 | /* IFLA_VF_STATS_TX_BYTES */ | |
969 | nla_total_size_64bit(sizeof(__u64)) + | |
970 | /* IFLA_VF_STATS_BROADCAST */ | |
971 | nla_total_size_64bit(sizeof(__u64)) + | |
972 | /* IFLA_VF_STATS_MULTICAST */ | |
973 | nla_total_size_64bit(sizeof(__u64)) + | |
974 | /* IFLA_VF_STATS_RX_DROPPED */ | |
975 | nla_total_size_64bit(sizeof(__u64)) + | |
976 | /* IFLA_VF_STATS_TX_DROPPED */ | |
977 | nla_total_size_64bit(sizeof(__u64))); | |
978 | } | |
c02db8c6 CW |
979 | return size; |
980 | } else | |
ebc08a6f WM |
981 | return 0; |
982 | } | |
983 | ||
c53864fd DG |
984 | static size_t rtnl_port_size(const struct net_device *dev, |
985 | u32 ext_filter_mask) | |
57b61080 SF |
986 | { |
987 | size_t port_size = nla_total_size(4) /* PORT_VF */ | |
988 | + nla_total_size(PORT_PROFILE_MAX) /* PORT_PROFILE */ | |
57b61080 SF |
989 | + nla_total_size(PORT_UUID_MAX) /* PORT_INSTANCE_UUID */ |
990 | + nla_total_size(PORT_UUID_MAX) /* PORT_HOST_UUID */ | |
991 | + nla_total_size(1) /* PROT_VDP_REQUEST */ | |
992 | + nla_total_size(2); /* PORT_VDP_RESPONSE */ | |
993 | size_t vf_ports_size = nla_total_size(sizeof(struct nlattr)); | |
994 | size_t vf_port_size = nla_total_size(sizeof(struct nlattr)) | |
995 | + port_size; | |
996 | size_t port_self_size = nla_total_size(sizeof(struct nlattr)) | |
997 | + port_size; | |
998 | ||
c53864fd DG |
999 | if (!dev->netdev_ops->ndo_get_vf_port || !dev->dev.parent || |
1000 | !(ext_filter_mask & RTEXT_FILTER_VF)) | |
57b61080 SF |
1001 | return 0; |
1002 | if (dev_num_vf(dev->dev.parent)) | |
1003 | return port_self_size + vf_ports_size + | |
1004 | vf_port_size * dev_num_vf(dev->dev.parent); | |
1005 | else | |
1006 | return port_self_size; | |
1007 | } | |
1008 | ||
b5cdae32 | 1009 | static size_t rtnl_xdp_size(void) |
d1fdd913 | 1010 | { |
b3cfaa31 | 1011 | size_t xdp_size = nla_total_size(0) + /* nest IFLA_XDP */ |
58038695 | 1012 | nla_total_size(1) + /* XDP_ATTACHED */ |
a25717d2 | 1013 | nla_total_size(4) + /* XDP_PROG_ID (or 1st mode) */ |
4f91da26 | 1014 | nla_total_size(4); /* XDP_<mode>_PROG_ID */ |
d1fdd913 | 1015 | |
b5cdae32 | 1016 | return xdp_size; |
d1fdd913 BB |
1017 | } |
1018 | ||
88f4fb0c JP |
1019 | static size_t rtnl_prop_list_size(const struct net_device *dev) |
1020 | { | |
1021 | struct netdev_name_node *name_node; | |
9f308313 ED |
1022 | unsigned int cnt = 0; |
1023 | ||
1024 | rcu_read_lock(); | |
1025 | list_for_each_entry_rcu(name_node, &dev->name_node->list, list) | |
1026 | cnt++; | |
1027 | rcu_read_unlock(); | |
88f4fb0c | 1028 | |
9f308313 | 1029 | if (!cnt) |
88f4fb0c | 1030 | return 0; |
9f308313 ED |
1031 | |
1032 | return nla_total_size(0) + cnt * nla_total_size(ALTIFNAMSIZ); | |
88f4fb0c JP |
1033 | } |
1034 | ||
829eb208 RP |
1035 | static size_t rtnl_proto_down_size(const struct net_device *dev) |
1036 | { | |
1037 | size_t size = nla_total_size(1); | |
1038 | ||
1039 | if (dev->proto_down_reason) | |
1040 | size += nla_total_size(0) + nla_total_size(4); | |
1041 | ||
1042 | return size; | |
1043 | } | |
1044 | ||
dca56c30 JP |
1045 | static size_t rtnl_devlink_port_size(const struct net_device *dev) |
1046 | { | |
1047 | size_t size = nla_total_size(0); /* nest IFLA_DEVLINK_PORT */ | |
1048 | ||
1049 | if (dev->devlink_port) | |
1050 | size += devlink_nl_port_handle_size(dev->devlink_port); | |
1051 | ||
1052 | return size; | |
1053 | } | |
1054 | ||
5f184269 JP |
1055 | static size_t rtnl_dpll_pin_size(const struct net_device *dev) |
1056 | { | |
1057 | size_t size = nla_total_size(0); /* nest IFLA_DPLL_PIN */ | |
1058 | ||
289e9225 | 1059 | size += dpll_netdev_pin_handle_size(dev); |
5f184269 JP |
1060 | |
1061 | return size; | |
1062 | } | |
1063 | ||
115c9b81 GR |
1064 | static noinline size_t if_nlmsg_size(const struct net_device *dev, |
1065 | u32 ext_filter_mask) | |
339bf98f TG |
1066 | { |
1067 | return NLMSG_ALIGN(sizeof(struct ifinfomsg)) | |
1068 | + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */ | |
0b815a1a | 1069 | + nla_total_size(IFALIASZ) /* IFLA_IFALIAS */ |
339bf98f | 1070 | + nla_total_size(IFNAMSIZ) /* IFLA_QDISC */ |
270cb4d0 | 1071 | + nla_total_size_64bit(sizeof(struct rtnl_link_ifmap)) |
339bf98f | 1072 | + nla_total_size(sizeof(struct rtnl_link_stats)) |
35c58459 | 1073 | + nla_total_size_64bit(sizeof(struct rtnl_link_stats64)) |
339bf98f TG |
1074 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */ |
1075 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_BROADCAST */ | |
1076 | + nla_total_size(4) /* IFLA_TXQLEN */ | |
1077 | + nla_total_size(4) /* IFLA_WEIGHT */ | |
1078 | + nla_total_size(4) /* IFLA_MTU */ | |
1079 | + nla_total_size(4) /* IFLA_LINK */ | |
1080 | + nla_total_size(4) /* IFLA_MASTER */ | |
9a57247f | 1081 | + nla_total_size(1) /* IFLA_CARRIER */ |
edbc0bb3 | 1082 | + nla_total_size(4) /* IFLA_PROMISCUITY */ |
7e6e1b57 | 1083 | + nla_total_size(4) /* IFLA_ALLMULTI */ |
76ff5cc9 JP |
1084 | + nla_total_size(4) /* IFLA_NUM_TX_QUEUES */ |
1085 | + nla_total_size(4) /* IFLA_NUM_RX_QUEUES */ | |
6919756c TK |
1086 | + nla_total_size(4) /* IFLA_GSO_MAX_SEGS */ |
1087 | + nla_total_size(4) /* IFLA_GSO_MAX_SIZE */ | |
eac1b93c | 1088 | + nla_total_size(4) /* IFLA_GRO_MAX_SIZE */ |
9eefedd5 XL |
1089 | + nla_total_size(4) /* IFLA_GSO_IPV4_MAX_SIZE */ |
1090 | + nla_total_size(4) /* IFLA_GRO_IPV4_MAX_SIZE */ | |
89527be8 ED |
1091 | + nla_total_size(4) /* IFLA_TSO_MAX_SIZE */ |
1092 | + nla_total_size(4) /* IFLA_TSO_MAX_SEGS */ | |
339bf98f | 1093 | + nla_total_size(1) /* IFLA_OPERSTATE */ |
38f7b870 | 1094 | + nla_total_size(1) /* IFLA_LINKMODE */ |
2d3b479d | 1095 | + nla_total_size(4) /* IFLA_CARRIER_CHANGES */ |
d37512a2 | 1096 | + nla_total_size(4) /* IFLA_LINK_NETNSID */ |
db833d40 | 1097 | + nla_total_size(4) /* IFLA_GROUP */ |
115c9b81 GR |
1098 | + nla_total_size(ext_filter_mask |
1099 | & RTEXT_FILTER_VF ? 4 : 0) /* IFLA_NUM_VF */ | |
1100 | + rtnl_vfinfo_size(dev, ext_filter_mask) /* IFLA_VFINFO_LIST */ | |
c53864fd | 1101 | + rtnl_port_size(dev, ext_filter_mask) /* IFLA_VF_PORTS + IFLA_PORT_SELF */ |
f8ff182c | 1102 | + rtnl_link_get_size(dev) /* IFLA_LINKINFO */ |
b1974ed0 | 1103 | + rtnl_link_get_af_size(dev, ext_filter_mask) /* IFLA_AF_SPEC */ |
82f28412 | 1104 | + nla_total_size(MAX_PHYS_ITEM_ID_LEN) /* IFLA_PHYS_PORT_ID */ |
88d6378b | 1105 | + nla_total_size(MAX_PHYS_ITEM_ID_LEN) /* IFLA_PHYS_SWITCH_ID */ |
c57c7a95 | 1106 | + nla_total_size(IFNAMSIZ) /* IFLA_PHYS_PORT_NAME */ |
b5cdae32 | 1107 | + rtnl_xdp_size() /* IFLA_XDP */ |
3d3ea5af | 1108 | + nla_total_size(4) /* IFLA_EVENT */ |
6621dd29 | 1109 | + nla_total_size(4) /* IFLA_NEW_NETNSID */ |
38e01b30 | 1110 | + nla_total_size(4) /* IFLA_NEW_IFINDEX */ |
829eb208 | 1111 | + rtnl_proto_down_size(dev) /* proto down */ |
7e4a8d5a | 1112 | + nla_total_size(4) /* IFLA_TARGET_NETNSID */ |
b2d3bcfa DD |
1113 | + nla_total_size(4) /* IFLA_CARRIER_UP_COUNT */ |
1114 | + nla_total_size(4) /* IFLA_CARRIER_DOWN_COUNT */ | |
3e7a50ce SH |
1115 | + nla_total_size(4) /* IFLA_MIN_MTU */ |
1116 | + nla_total_size(4) /* IFLA_MAX_MTU */ | |
88f4fb0c | 1117 | + rtnl_prop_list_size(dev) |
f74877a5 | 1118 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_PERM_ADDRESS */ |
dca56c30 | 1119 | + rtnl_devlink_port_size(dev) |
5f184269 | 1120 | + rtnl_dpll_pin_size(dev) |
79e1ad14 | 1121 | + 0; |
339bf98f TG |
1122 | } |
1123 | ||
57b61080 SF |
1124 | static int rtnl_vf_ports_fill(struct sk_buff *skb, struct net_device *dev) |
1125 | { | |
1126 | struct nlattr *vf_ports; | |
1127 | struct nlattr *vf_port; | |
1128 | int vf; | |
1129 | int err; | |
1130 | ||
ae0be8de | 1131 | vf_ports = nla_nest_start_noflag(skb, IFLA_VF_PORTS); |
57b61080 SF |
1132 | if (!vf_ports) |
1133 | return -EMSGSIZE; | |
1134 | ||
1135 | for (vf = 0; vf < dev_num_vf(dev->dev.parent); vf++) { | |
ae0be8de | 1136 | vf_port = nla_nest_start_noflag(skb, IFLA_VF_PORT); |
8ca94183 SF |
1137 | if (!vf_port) |
1138 | goto nla_put_failure; | |
a6574349 DM |
1139 | if (nla_put_u32(skb, IFLA_PORT_VF, vf)) |
1140 | goto nla_put_failure; | |
57b61080 | 1141 | err = dev->netdev_ops->ndo_get_vf_port(dev, vf, skb); |
8ca94183 SF |
1142 | if (err == -EMSGSIZE) |
1143 | goto nla_put_failure; | |
57b61080 | 1144 | if (err) { |
57b61080 SF |
1145 | nla_nest_cancel(skb, vf_port); |
1146 | continue; | |
1147 | } | |
1148 | nla_nest_end(skb, vf_port); | |
1149 | } | |
1150 | ||
1151 | nla_nest_end(skb, vf_ports); | |
1152 | ||
1153 | return 0; | |
8ca94183 SF |
1154 | |
1155 | nla_put_failure: | |
1156 | nla_nest_cancel(skb, vf_ports); | |
1157 | return -EMSGSIZE; | |
57b61080 SF |
1158 | } |
1159 | ||
1160 | static int rtnl_port_self_fill(struct sk_buff *skb, struct net_device *dev) | |
1161 | { | |
1162 | struct nlattr *port_self; | |
1163 | int err; | |
1164 | ||
ae0be8de | 1165 | port_self = nla_nest_start_noflag(skb, IFLA_PORT_SELF); |
57b61080 SF |
1166 | if (!port_self) |
1167 | return -EMSGSIZE; | |
1168 | ||
1169 | err = dev->netdev_ops->ndo_get_vf_port(dev, PORT_SELF_VF, skb); | |
1170 | if (err) { | |
1171 | nla_nest_cancel(skb, port_self); | |
8ca94183 | 1172 | return (err == -EMSGSIZE) ? err : 0; |
57b61080 SF |
1173 | } |
1174 | ||
1175 | nla_nest_end(skb, port_self); | |
1176 | ||
1177 | return 0; | |
1178 | } | |
1179 | ||
c53864fd DG |
1180 | static int rtnl_port_fill(struct sk_buff *skb, struct net_device *dev, |
1181 | u32 ext_filter_mask) | |
57b61080 SF |
1182 | { |
1183 | int err; | |
1184 | ||
c53864fd DG |
1185 | if (!dev->netdev_ops->ndo_get_vf_port || !dev->dev.parent || |
1186 | !(ext_filter_mask & RTEXT_FILTER_VF)) | |
57b61080 SF |
1187 | return 0; |
1188 | ||
1189 | err = rtnl_port_self_fill(skb, dev); | |
1190 | if (err) | |
1191 | return err; | |
1192 | ||
1193 | if (dev_num_vf(dev->dev.parent)) { | |
1194 | err = rtnl_vf_ports_fill(skb, dev); | |
1195 | if (err) | |
1196 | return err; | |
1197 | } | |
1198 | ||
1199 | return 0; | |
1200 | } | |
1201 | ||
66cae9ed JP |
1202 | static int rtnl_phys_port_id_fill(struct sk_buff *skb, struct net_device *dev) |
1203 | { | |
1204 | int err; | |
02637fce | 1205 | struct netdev_phys_item_id ppid; |
66cae9ed JP |
1206 | |
1207 | err = dev_get_phys_port_id(dev, &ppid); | |
1208 | if (err) { | |
1209 | if (err == -EOPNOTSUPP) | |
1210 | return 0; | |
1211 | return err; | |
1212 | } | |
1213 | ||
1214 | if (nla_put(skb, IFLA_PHYS_PORT_ID, ppid.id_len, ppid.id)) | |
1215 | return -EMSGSIZE; | |
1216 | ||
1217 | return 0; | |
1218 | } | |
1219 | ||
db24a904 DA |
1220 | static int rtnl_phys_port_name_fill(struct sk_buff *skb, struct net_device *dev) |
1221 | { | |
1222 | char name[IFNAMSIZ]; | |
1223 | int err; | |
1224 | ||
1225 | err = dev_get_phys_port_name(dev, name, sizeof(name)); | |
1226 | if (err) { | |
1227 | if (err == -EOPNOTSUPP) | |
1228 | return 0; | |
1229 | return err; | |
1230 | } | |
1231 | ||
77ef033b | 1232 | if (nla_put_string(skb, IFLA_PHYS_PORT_NAME, name)) |
db24a904 DA |
1233 | return -EMSGSIZE; |
1234 | ||
1235 | return 0; | |
1236 | } | |
1237 | ||
82f28412 JP |
1238 | static int rtnl_phys_switch_id_fill(struct sk_buff *skb, struct net_device *dev) |
1239 | { | |
bccb3025 | 1240 | struct netdev_phys_item_id ppid = { }; |
82f28412 | 1241 | int err; |
82f28412 | 1242 | |
bccb3025 | 1243 | err = dev_get_port_parent_id(dev, &ppid, false); |
82f28412 JP |
1244 | if (err) { |
1245 | if (err == -EOPNOTSUPP) | |
1246 | return 0; | |
1247 | return err; | |
1248 | } | |
1249 | ||
bccb3025 | 1250 | if (nla_put(skb, IFLA_PHYS_SWITCH_ID, ppid.id_len, ppid.id)) |
82f28412 JP |
1251 | return -EMSGSIZE; |
1252 | ||
1253 | return 0; | |
1254 | } | |
1255 | ||
b22b941b HFS |
1256 | static noinline_for_stack int rtnl_fill_stats(struct sk_buff *skb, |
1257 | struct net_device *dev) | |
1258 | { | |
550bce59 | 1259 | struct rtnl_link_stats64 *sp; |
b22b941b | 1260 | struct nlattr *attr; |
18402843 | 1261 | |
58414d32 ND |
1262 | attr = nla_reserve_64bit(skb, IFLA_STATS64, |
1263 | sizeof(struct rtnl_link_stats64), IFLA_PAD); | |
b22b941b HFS |
1264 | if (!attr) |
1265 | return -EMSGSIZE; | |
1266 | ||
550bce59 RP |
1267 | sp = nla_data(attr); |
1268 | dev_get_stats(dev, sp); | |
b22b941b | 1269 | |
550bce59 RP |
1270 | attr = nla_reserve(skb, IFLA_STATS, |
1271 | sizeof(struct rtnl_link_stats)); | |
b22b941b HFS |
1272 | if (!attr) |
1273 | return -EMSGSIZE; | |
1274 | ||
550bce59 | 1275 | copy_rtnl_link_stats(nla_data(attr), sp); |
b22b941b HFS |
1276 | |
1277 | return 0; | |
1278 | } | |
1279 | ||
1280 | static noinline_for_stack int rtnl_fill_vfinfo(struct sk_buff *skb, | |
1281 | struct net_device *dev, | |
1282 | int vfs_num, | |
fa0e21fa | 1283 | u32 ext_filter_mask) |
b22b941b HFS |
1284 | { |
1285 | struct ifla_vf_rss_query_en vf_rss_query_en; | |
79aab093 | 1286 | struct nlattr *vf, *vfstats, *vfvlanlist; |
b22b941b | 1287 | struct ifla_vf_link_state vf_linkstate; |
79aab093 | 1288 | struct ifla_vf_vlan_info vf_vlan_info; |
b22b941b HFS |
1289 | struct ifla_vf_spoofchk vf_spoofchk; |
1290 | struct ifla_vf_tx_rate vf_tx_rate; | |
1291 | struct ifla_vf_stats vf_stats; | |
1292 | struct ifla_vf_trust vf_trust; | |
1293 | struct ifla_vf_vlan vf_vlan; | |
1294 | struct ifla_vf_rate vf_rate; | |
b22b941b | 1295 | struct ifla_vf_mac vf_mac; |
75345f88 | 1296 | struct ifla_vf_broadcast vf_broadcast; |
b22b941b | 1297 | struct ifla_vf_info ivi; |
30aad417 DG |
1298 | struct ifla_vf_guid node_guid; |
1299 | struct ifla_vf_guid port_guid; | |
b22b941b | 1300 | |
0eed9cf5 MY |
1301 | memset(&ivi, 0, sizeof(ivi)); |
1302 | ||
b22b941b HFS |
1303 | /* Not all SR-IOV capable drivers support the |
1304 | * spoofcheck and "RSS query enable" query. Preset to | |
1305 | * -1 so the user space tool can detect that the driver | |
1306 | * didn't report anything. | |
1307 | */ | |
1308 | ivi.spoofchk = -1; | |
1309 | ivi.rss_query_en = -1; | |
1310 | ivi.trusted = -1; | |
b22b941b HFS |
1311 | /* The default value for VF link state is "auto" |
1312 | * IFLA_VF_LINK_STATE_AUTO which equals zero | |
1313 | */ | |
1314 | ivi.linkstate = 0; | |
79aab093 MS |
1315 | /* VLAN Protocol by default is 802.1Q */ |
1316 | ivi.vlan_proto = htons(ETH_P_8021Q); | |
b22b941b HFS |
1317 | if (dev->netdev_ops->ndo_get_vf_config(dev, vfs_num, &ivi)) |
1318 | return 0; | |
1319 | ||
775f4f05 | 1320 | memset(&vf_vlan_info, 0, sizeof(vf_vlan_info)); |
9fbf082f LR |
1321 | memset(&node_guid, 0, sizeof(node_guid)); |
1322 | memset(&port_guid, 0, sizeof(port_guid)); | |
775f4f05 | 1323 | |
b22b941b HFS |
1324 | vf_mac.vf = |
1325 | vf_vlan.vf = | |
79aab093 | 1326 | vf_vlan_info.vf = |
b22b941b HFS |
1327 | vf_rate.vf = |
1328 | vf_tx_rate.vf = | |
1329 | vf_spoofchk.vf = | |
1330 | vf_linkstate.vf = | |
1331 | vf_rss_query_en.vf = | |
9aed6ae0 DG |
1332 | vf_trust.vf = |
1333 | node_guid.vf = | |
1334 | port_guid.vf = ivi.vf; | |
b22b941b HFS |
1335 | |
1336 | memcpy(vf_mac.mac, ivi.mac, sizeof(ivi.mac)); | |
75345f88 | 1337 | memcpy(vf_broadcast.broadcast, dev->broadcast, dev->addr_len); |
b22b941b HFS |
1338 | vf_vlan.vlan = ivi.vlan; |
1339 | vf_vlan.qos = ivi.qos; | |
79aab093 MS |
1340 | vf_vlan_info.vlan = ivi.vlan; |
1341 | vf_vlan_info.qos = ivi.qos; | |
1342 | vf_vlan_info.vlan_proto = ivi.vlan_proto; | |
b22b941b HFS |
1343 | vf_tx_rate.rate = ivi.max_tx_rate; |
1344 | vf_rate.min_tx_rate = ivi.min_tx_rate; | |
1345 | vf_rate.max_tx_rate = ivi.max_tx_rate; | |
1346 | vf_spoofchk.setting = ivi.spoofchk; | |
1347 | vf_linkstate.link_state = ivi.linkstate; | |
1348 | vf_rss_query_en.setting = ivi.rss_query_en; | |
1349 | vf_trust.setting = ivi.trusted; | |
ae0be8de | 1350 | vf = nla_nest_start_noflag(skb, IFLA_VF_INFO); |
79aab093 | 1351 | if (!vf) |
4a59cdfd | 1352 | return -EMSGSIZE; |
b22b941b | 1353 | if (nla_put(skb, IFLA_VF_MAC, sizeof(vf_mac), &vf_mac) || |
75345f88 | 1354 | nla_put(skb, IFLA_VF_BROADCAST, sizeof(vf_broadcast), &vf_broadcast) || |
b22b941b HFS |
1355 | nla_put(skb, IFLA_VF_VLAN, sizeof(vf_vlan), &vf_vlan) || |
1356 | nla_put(skb, IFLA_VF_RATE, sizeof(vf_rate), | |
1357 | &vf_rate) || | |
1358 | nla_put(skb, IFLA_VF_TX_RATE, sizeof(vf_tx_rate), | |
1359 | &vf_tx_rate) || | |
1360 | nla_put(skb, IFLA_VF_SPOOFCHK, sizeof(vf_spoofchk), | |
1361 | &vf_spoofchk) || | |
1362 | nla_put(skb, IFLA_VF_LINK_STATE, sizeof(vf_linkstate), | |
1363 | &vf_linkstate) || | |
1364 | nla_put(skb, IFLA_VF_RSS_QUERY_EN, | |
1365 | sizeof(vf_rss_query_en), | |
1366 | &vf_rss_query_en) || | |
1367 | nla_put(skb, IFLA_VF_TRUST, | |
1368 | sizeof(vf_trust), &vf_trust)) | |
79aab093 | 1369 | goto nla_put_vf_failure; |
30aad417 | 1370 | |
30aad417 DG |
1371 | if (dev->netdev_ops->ndo_get_vf_guid && |
1372 | !dev->netdev_ops->ndo_get_vf_guid(dev, vfs_num, &node_guid, | |
1373 | &port_guid)) { | |
1374 | if (nla_put(skb, IFLA_VF_IB_NODE_GUID, sizeof(node_guid), | |
1375 | &node_guid) || | |
1376 | nla_put(skb, IFLA_VF_IB_PORT_GUID, sizeof(port_guid), | |
1377 | &port_guid)) | |
1378 | goto nla_put_vf_failure; | |
1379 | } | |
ae0be8de | 1380 | vfvlanlist = nla_nest_start_noflag(skb, IFLA_VF_VLAN_LIST); |
79aab093 MS |
1381 | if (!vfvlanlist) |
1382 | goto nla_put_vf_failure; | |
1383 | if (nla_put(skb, IFLA_VF_VLAN_INFO, sizeof(vf_vlan_info), | |
1384 | &vf_vlan_info)) { | |
1385 | nla_nest_cancel(skb, vfvlanlist); | |
1386 | goto nla_put_vf_failure; | |
1387 | } | |
1388 | nla_nest_end(skb, vfvlanlist); | |
fa0e21fa EP |
1389 | if (~ext_filter_mask & RTEXT_FILTER_SKIP_STATS) { |
1390 | memset(&vf_stats, 0, sizeof(vf_stats)); | |
1391 | if (dev->netdev_ops->ndo_get_vf_stats) | |
1392 | dev->netdev_ops->ndo_get_vf_stats(dev, vfs_num, | |
1393 | &vf_stats); | |
1394 | vfstats = nla_nest_start_noflag(skb, IFLA_VF_STATS); | |
1395 | if (!vfstats) | |
1396 | goto nla_put_vf_failure; | |
1397 | if (nla_put_u64_64bit(skb, IFLA_VF_STATS_RX_PACKETS, | |
1398 | vf_stats.rx_packets, IFLA_VF_STATS_PAD) || | |
1399 | nla_put_u64_64bit(skb, IFLA_VF_STATS_TX_PACKETS, | |
1400 | vf_stats.tx_packets, IFLA_VF_STATS_PAD) || | |
1401 | nla_put_u64_64bit(skb, IFLA_VF_STATS_RX_BYTES, | |
1402 | vf_stats.rx_bytes, IFLA_VF_STATS_PAD) || | |
1403 | nla_put_u64_64bit(skb, IFLA_VF_STATS_TX_BYTES, | |
1404 | vf_stats.tx_bytes, IFLA_VF_STATS_PAD) || | |
1405 | nla_put_u64_64bit(skb, IFLA_VF_STATS_BROADCAST, | |
1406 | vf_stats.broadcast, IFLA_VF_STATS_PAD) || | |
1407 | nla_put_u64_64bit(skb, IFLA_VF_STATS_MULTICAST, | |
1408 | vf_stats.multicast, IFLA_VF_STATS_PAD) || | |
1409 | nla_put_u64_64bit(skb, IFLA_VF_STATS_RX_DROPPED, | |
1410 | vf_stats.rx_dropped, IFLA_VF_STATS_PAD) || | |
1411 | nla_put_u64_64bit(skb, IFLA_VF_STATS_TX_DROPPED, | |
1412 | vf_stats.tx_dropped, IFLA_VF_STATS_PAD)) { | |
1413 | nla_nest_cancel(skb, vfstats); | |
1414 | goto nla_put_vf_failure; | |
1415 | } | |
1416 | nla_nest_end(skb, vfstats); | |
79aab093 | 1417 | } |
b22b941b HFS |
1418 | nla_nest_end(skb, vf); |
1419 | return 0; | |
79aab093 MS |
1420 | |
1421 | nla_put_vf_failure: | |
1422 | nla_nest_cancel(skb, vf); | |
79aab093 | 1423 | return -EMSGSIZE; |
b22b941b HFS |
1424 | } |
1425 | ||
250fc3df FW |
1426 | static noinline_for_stack int rtnl_fill_vf(struct sk_buff *skb, |
1427 | struct net_device *dev, | |
1428 | u32 ext_filter_mask) | |
1429 | { | |
1430 | struct nlattr *vfinfo; | |
1431 | int i, num_vfs; | |
1432 | ||
1433 | if (!dev->dev.parent || ((ext_filter_mask & RTEXT_FILTER_VF) == 0)) | |
1434 | return 0; | |
1435 | ||
1436 | num_vfs = dev_num_vf(dev->dev.parent); | |
1437 | if (nla_put_u32(skb, IFLA_NUM_VF, num_vfs)) | |
1438 | return -EMSGSIZE; | |
1439 | ||
1440 | if (!dev->netdev_ops->ndo_get_vf_config) | |
1441 | return 0; | |
1442 | ||
ae0be8de | 1443 | vfinfo = nla_nest_start_noflag(skb, IFLA_VFINFO_LIST); |
250fc3df FW |
1444 | if (!vfinfo) |
1445 | return -EMSGSIZE; | |
1446 | ||
1447 | for (i = 0; i < num_vfs; i++) { | |
4a59cdfd GP |
1448 | if (rtnl_fill_vfinfo(skb, dev, i, ext_filter_mask)) { |
1449 | nla_nest_cancel(skb, vfinfo); | |
250fc3df | 1450 | return -EMSGSIZE; |
4a59cdfd | 1451 | } |
250fc3df FW |
1452 | } |
1453 | ||
1454 | nla_nest_end(skb, vfinfo); | |
1455 | return 0; | |
1456 | } | |
1457 | ||
74808e72 ED |
1458 | static int rtnl_fill_link_ifmap(struct sk_buff *skb, |
1459 | const struct net_device *dev) | |
b22b941b | 1460 | { |
5f8e4474 KL |
1461 | struct rtnl_link_ifmap map; |
1462 | ||
1463 | memset(&map, 0, sizeof(map)); | |
74808e72 ED |
1464 | map.mem_start = READ_ONCE(dev->mem_start); |
1465 | map.mem_end = READ_ONCE(dev->mem_end); | |
1466 | map.base_addr = READ_ONCE(dev->base_addr); | |
1467 | map.irq = READ_ONCE(dev->irq); | |
1468 | map.dma = READ_ONCE(dev->dma); | |
1469 | map.port = READ_ONCE(dev->if_port); | |
5f8e4474 | 1470 | |
270cb4d0 | 1471 | if (nla_put_64bit(skb, IFLA_MAP, sizeof(map), &map, IFLA_PAD)) |
b22b941b HFS |
1472 | return -EMSGSIZE; |
1473 | ||
1474 | return 0; | |
1475 | } | |
1476 | ||
a25717d2 | 1477 | static u32 rtnl_xdp_prog_skb(struct net_device *dev) |
d67b9cd2 | 1478 | { |
58038695 | 1479 | const struct bpf_prog *generic_xdp_prog; |
d67b9cd2 DB |
1480 | |
1481 | ASSERT_RTNL(); | |
1482 | ||
58038695 | 1483 | generic_xdp_prog = rtnl_dereference(dev->xdp_prog); |
a25717d2 JK |
1484 | if (!generic_xdp_prog) |
1485 | return 0; | |
1486 | return generic_xdp_prog->aux->id; | |
1487 | } | |
d67b9cd2 | 1488 | |
a25717d2 JK |
1489 | static u32 rtnl_xdp_prog_drv(struct net_device *dev) |
1490 | { | |
7f0a8382 | 1491 | return dev_xdp_prog_id(dev, XDP_MODE_DRV); |
a25717d2 | 1492 | } |
118b4aa2 | 1493 | |
a25717d2 JK |
1494 | static u32 rtnl_xdp_prog_hw(struct net_device *dev) |
1495 | { | |
7f0a8382 | 1496 | return dev_xdp_prog_id(dev, XDP_MODE_HW); |
a25717d2 JK |
1497 | } |
1498 | ||
1499 | static int rtnl_xdp_report_one(struct sk_buff *skb, struct net_device *dev, | |
1500 | u32 *prog_id, u8 *mode, u8 tgt_mode, u32 attr, | |
1501 | u32 (*get_prog_id)(struct net_device *dev)) | |
1502 | { | |
1503 | u32 curr_id; | |
1504 | int err; | |
1505 | ||
1506 | curr_id = get_prog_id(dev); | |
1507 | if (!curr_id) | |
1508 | return 0; | |
1509 | ||
1510 | *prog_id = curr_id; | |
1511 | err = nla_put_u32(skb, attr, curr_id); | |
1512 | if (err) | |
1513 | return err; | |
d67b9cd2 | 1514 | |
a25717d2 JK |
1515 | if (*mode != XDP_ATTACHED_NONE) |
1516 | *mode = XDP_ATTACHED_MULTI; | |
1517 | else | |
1518 | *mode = tgt_mode; | |
118b4aa2 | 1519 | |
a25717d2 | 1520 | return 0; |
d67b9cd2 DB |
1521 | } |
1522 | ||
d1fdd913 BB |
1523 | static int rtnl_xdp_fill(struct sk_buff *skb, struct net_device *dev) |
1524 | { | |
d1fdd913 | 1525 | struct nlattr *xdp; |
58038695 | 1526 | u32 prog_id; |
d1fdd913 | 1527 | int err; |
4f91da26 | 1528 | u8 mode; |
d1fdd913 | 1529 | |
ae0be8de | 1530 | xdp = nla_nest_start_noflag(skb, IFLA_XDP); |
d1fdd913 BB |
1531 | if (!xdp) |
1532 | return -EMSGSIZE; | |
d67b9cd2 | 1533 | |
a25717d2 JK |
1534 | prog_id = 0; |
1535 | mode = XDP_ATTACHED_NONE; | |
202aabe8 JK |
1536 | err = rtnl_xdp_report_one(skb, dev, &prog_id, &mode, XDP_ATTACHED_SKB, |
1537 | IFLA_XDP_SKB_PROG_ID, rtnl_xdp_prog_skb); | |
1538 | if (err) | |
a25717d2 | 1539 | goto err_cancel; |
202aabe8 JK |
1540 | err = rtnl_xdp_report_one(skb, dev, &prog_id, &mode, XDP_ATTACHED_DRV, |
1541 | IFLA_XDP_DRV_PROG_ID, rtnl_xdp_prog_drv); | |
1542 | if (err) | |
a25717d2 | 1543 | goto err_cancel; |
202aabe8 JK |
1544 | err = rtnl_xdp_report_one(skb, dev, &prog_id, &mode, XDP_ATTACHED_HW, |
1545 | IFLA_XDP_HW_PROG_ID, rtnl_xdp_prog_hw); | |
1546 | if (err) | |
a25717d2 JK |
1547 | goto err_cancel; |
1548 | ||
4f91da26 | 1549 | err = nla_put_u8(skb, IFLA_XDP_ATTACHED, mode); |
d1fdd913 BB |
1550 | if (err) |
1551 | goto err_cancel; | |
1552 | ||
a25717d2 | 1553 | if (prog_id && mode != XDP_ATTACHED_MULTI) { |
58038695 MKL |
1554 | err = nla_put_u32(skb, IFLA_XDP_PROG_ID, prog_id); |
1555 | if (err) | |
1556 | goto err_cancel; | |
1557 | } | |
1558 | ||
d1fdd913 BB |
1559 | nla_nest_end(skb, xdp); |
1560 | return 0; | |
1561 | ||
1562 | err_cancel: | |
1563 | nla_nest_cancel(skb, xdp); | |
1564 | return err; | |
1565 | } | |
1566 | ||
3d3ea5af VY |
1567 | static u32 rtnl_get_event(unsigned long event) |
1568 | { | |
1569 | u32 rtnl_event_type = IFLA_EVENT_NONE; | |
1570 | ||
1571 | switch (event) { | |
1572 | case NETDEV_REBOOT: | |
1573 | rtnl_event_type = IFLA_EVENT_REBOOT; | |
1574 | break; | |
1575 | case NETDEV_FEAT_CHANGE: | |
1576 | rtnl_event_type = IFLA_EVENT_FEATURES; | |
1577 | break; | |
1578 | case NETDEV_BONDING_FAILOVER: | |
1579 | rtnl_event_type = IFLA_EVENT_BONDING_FAILOVER; | |
1580 | break; | |
1581 | case NETDEV_NOTIFY_PEERS: | |
1582 | rtnl_event_type = IFLA_EVENT_NOTIFY_PEERS; | |
1583 | break; | |
1584 | case NETDEV_RESEND_IGMP: | |
1585 | rtnl_event_type = IFLA_EVENT_IGMP_RESEND; | |
1586 | break; | |
1587 | case NETDEV_CHANGEINFODATA: | |
1588 | rtnl_event_type = IFLA_EVENT_BONDING_OPTIONS; | |
1589 | break; | |
1590 | default: | |
1591 | break; | |
1592 | } | |
1593 | ||
1594 | return rtnl_event_type; | |
1595 | } | |
1596 | ||
79110a04 FW |
1597 | static int put_master_ifindex(struct sk_buff *skb, struct net_device *dev) |
1598 | { | |
1599 | const struct net_device *upper_dev; | |
1600 | int ret = 0; | |
1601 | ||
1602 | rcu_read_lock(); | |
1603 | ||
1604 | upper_dev = netdev_master_upper_dev_get_rcu(dev); | |
1605 | if (upper_dev) | |
1606 | ret = nla_put_u32(skb, IFLA_MASTER, upper_dev->ifindex); | |
1607 | ||
1608 | rcu_read_unlock(); | |
1609 | return ret; | |
1610 | } | |
1611 | ||
feadc4b6 SD |
1612 | static int nla_put_iflink(struct sk_buff *skb, const struct net_device *dev, |
1613 | bool force) | |
79110a04 | 1614 | { |
e353ea9c | 1615 | int iflink = dev_get_iflink(dev); |
79110a04 | 1616 | |
e353ea9c ED |
1617 | if (force || READ_ONCE(dev->ifindex) != iflink) |
1618 | return nla_put_u32(skb, IFLA_LINK, iflink); | |
79110a04 | 1619 | |
feadc4b6 | 1620 | return 0; |
79110a04 FW |
1621 | } |
1622 | ||
6c557001 FW |
1623 | static noinline_for_stack int nla_put_ifalias(struct sk_buff *skb, |
1624 | struct net_device *dev) | |
1625 | { | |
1626 | char buf[IFALIASZ]; | |
1627 | int ret; | |
1628 | ||
1629 | ret = dev_get_alias(dev, buf, sizeof(buf)); | |
1630 | return ret > 0 ? nla_put_string(skb, IFLA_IFALIAS, buf) : 0; | |
1631 | } | |
1632 | ||
b1e66b9a | 1633 | static int rtnl_fill_link_netnsid(struct sk_buff *skb, |
79e1ad14 | 1634 | const struct net_device *dev, |
d4e4fdf9 | 1635 | struct net *src_net, gfp_t gfp) |
b1e66b9a | 1636 | { |
feadc4b6 SD |
1637 | bool put_iflink = false; |
1638 | ||
b1e66b9a FW |
1639 | if (dev->rtnl_link_ops && dev->rtnl_link_ops->get_link_net) { |
1640 | struct net *link_net = dev->rtnl_link_ops->get_link_net(dev); | |
1641 | ||
1642 | if (!net_eq(dev_net(dev), link_net)) { | |
d4e4fdf9 | 1643 | int id = peernet2id_alloc(src_net, link_net, gfp); |
b1e66b9a FW |
1644 | |
1645 | if (nla_put_s32(skb, IFLA_LINK_NETNSID, id)) | |
1646 | return -EMSGSIZE; | |
feadc4b6 SD |
1647 | |
1648 | put_iflink = true; | |
b1e66b9a FW |
1649 | } |
1650 | } | |
1651 | ||
feadc4b6 | 1652 | return nla_put_iflink(skb, dev, put_iflink); |
b1e66b9a FW |
1653 | } |
1654 | ||
070cbf5b FW |
1655 | static int rtnl_fill_link_af(struct sk_buff *skb, |
1656 | const struct net_device *dev, | |
1657 | u32 ext_filter_mask) | |
1658 | { | |
1659 | const struct rtnl_af_ops *af_ops; | |
1660 | struct nlattr *af_spec; | |
1661 | ||
ae0be8de | 1662 | af_spec = nla_nest_start_noflag(skb, IFLA_AF_SPEC); |
070cbf5b FW |
1663 | if (!af_spec) |
1664 | return -EMSGSIZE; | |
1665 | ||
5fa85a09 | 1666 | list_for_each_entry_rcu(af_ops, &rtnl_af_ops, list) { |
070cbf5b FW |
1667 | struct nlattr *af; |
1668 | int err; | |
1669 | ||
1670 | if (!af_ops->fill_link_af) | |
1671 | continue; | |
1672 | ||
ae0be8de | 1673 | af = nla_nest_start_noflag(skb, af_ops->family); |
070cbf5b FW |
1674 | if (!af) |
1675 | return -EMSGSIZE; | |
1676 | ||
1677 | err = af_ops->fill_link_af(skb, dev, ext_filter_mask); | |
1678 | /* | |
1679 | * Caller may return ENODATA to indicate that there | |
1680 | * was no data to be dumped. This is not an error, it | |
1681 | * means we should trim the attribute header and | |
1682 | * continue. | |
1683 | */ | |
1684 | if (err == -ENODATA) | |
1685 | nla_nest_cancel(skb, af); | |
1686 | else if (err < 0) | |
1687 | return -EMSGSIZE; | |
1688 | ||
1689 | nla_nest_end(skb, af); | |
1690 | } | |
1691 | ||
1692 | nla_nest_end(skb, af_spec); | |
1693 | return 0; | |
1694 | } | |
1695 | ||
88f4fb0c JP |
1696 | static int rtnl_fill_alt_ifnames(struct sk_buff *skb, |
1697 | const struct net_device *dev) | |
1698 | { | |
1699 | struct netdev_name_node *name_node; | |
1700 | int count = 0; | |
1701 | ||
0ec4e48c | 1702 | list_for_each_entry_rcu(name_node, &dev->name_node->list, list) { |
88f4fb0c JP |
1703 | if (nla_put_string(skb, IFLA_ALT_IFNAME, name_node->name)) |
1704 | return -EMSGSIZE; | |
1705 | count++; | |
1706 | } | |
1707 | return count; | |
1708 | } | |
1709 | ||
0ec4e48c | 1710 | /* RCU protected. */ |
88f4fb0c JP |
1711 | static int rtnl_fill_prop_list(struct sk_buff *skb, |
1712 | const struct net_device *dev) | |
1713 | { | |
1714 | struct nlattr *prop_list; | |
1715 | int ret; | |
1716 | ||
1717 | prop_list = nla_nest_start(skb, IFLA_PROP_LIST); | |
1718 | if (!prop_list) | |
1719 | return -EMSGSIZE; | |
1720 | ||
1721 | ret = rtnl_fill_alt_ifnames(skb, dev); | |
1722 | if (ret <= 0) | |
1723 | goto nest_cancel; | |
1724 | ||
1725 | nla_nest_end(skb, prop_list); | |
1726 | return 0; | |
1727 | ||
1728 | nest_cancel: | |
1729 | nla_nest_cancel(skb, prop_list); | |
1730 | return ret; | |
1731 | } | |
1732 | ||
829eb208 RP |
1733 | static int rtnl_fill_proto_down(struct sk_buff *skb, |
1734 | const struct net_device *dev) | |
1735 | { | |
1736 | struct nlattr *pr; | |
1737 | u32 preason; | |
1738 | ||
1739 | if (nla_put_u8(skb, IFLA_PROTO_DOWN, dev->proto_down)) | |
1740 | goto nla_put_failure; | |
1741 | ||
1742 | preason = dev->proto_down_reason; | |
1743 | if (!preason) | |
1744 | return 0; | |
1745 | ||
1746 | pr = nla_nest_start(skb, IFLA_PROTO_DOWN_REASON); | |
1747 | if (!pr) | |
1748 | return -EMSGSIZE; | |
1749 | ||
1750 | if (nla_put_u32(skb, IFLA_PROTO_DOWN_REASON_VALUE, preason)) { | |
1751 | nla_nest_cancel(skb, pr); | |
1752 | goto nla_put_failure; | |
1753 | } | |
1754 | ||
1755 | nla_nest_end(skb, pr); | |
1756 | return 0; | |
1757 | ||
1758 | nla_put_failure: | |
1759 | return -EMSGSIZE; | |
1760 | } | |
1761 | ||
dca56c30 JP |
1762 | static int rtnl_fill_devlink_port(struct sk_buff *skb, |
1763 | const struct net_device *dev) | |
1764 | { | |
1765 | struct nlattr *devlink_port_nest; | |
1766 | int ret; | |
1767 | ||
1768 | devlink_port_nest = nla_nest_start(skb, IFLA_DEVLINK_PORT); | |
1769 | if (!devlink_port_nest) | |
1770 | return -EMSGSIZE; | |
1771 | ||
1772 | if (dev->devlink_port) { | |
1773 | ret = devlink_nl_port_handle_fill(skb, dev->devlink_port); | |
1774 | if (ret < 0) | |
1775 | goto nest_cancel; | |
1776 | } | |
1777 | ||
1778 | nla_nest_end(skb, devlink_port_nest); | |
1779 | return 0; | |
1780 | ||
1781 | nest_cancel: | |
1782 | nla_nest_cancel(skb, devlink_port_nest); | |
1783 | return ret; | |
1784 | } | |
1785 | ||
5f184269 JP |
1786 | static int rtnl_fill_dpll_pin(struct sk_buff *skb, |
1787 | const struct net_device *dev) | |
1788 | { | |
1789 | struct nlattr *dpll_pin_nest; | |
1790 | int ret; | |
1791 | ||
1792 | dpll_pin_nest = nla_nest_start(skb, IFLA_DPLL_PIN); | |
1793 | if (!dpll_pin_nest) | |
1794 | return -EMSGSIZE; | |
1795 | ||
289e9225 | 1796 | ret = dpll_netdev_add_pin_handle(skb, dev); |
5f184269 JP |
1797 | if (ret < 0) |
1798 | goto nest_cancel; | |
1799 | ||
1800 | nla_nest_end(skb, dpll_pin_nest); | |
1801 | return 0; | |
1802 | ||
1803 | nest_cancel: | |
1804 | nla_nest_cancel(skb, dpll_pin_nest); | |
1805 | return ret; | |
1806 | } | |
1807 | ||
79e1ad14 JB |
1808 | static int rtnl_fill_ifinfo(struct sk_buff *skb, |
1809 | struct net_device *dev, struct net *src_net, | |
575c3e2a | 1810 | int type, u32 pid, u32 seq, u32 change, |
3d3ea5af | 1811 | unsigned int flags, u32 ext_filter_mask, |
38e01b30 | 1812 | u32 event, int *new_nsid, int new_ifindex, |
d4e4fdf9 | 1813 | int tgt_netnsid, gfp_t gfp) |
b60c5115 | 1814 | { |
8a582681 | 1815 | char devname[IFNAMSIZ]; |
b60c5115 TG |
1816 | struct ifinfomsg *ifm; |
1817 | struct nlmsghdr *nlh; | |
5891cd5e | 1818 | struct Qdisc *qdisc; |
1da177e4 | 1819 | |
2907c35f | 1820 | ASSERT_RTNL(); |
b60c5115 TG |
1821 | nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ifm), flags); |
1822 | if (nlh == NULL) | |
26932566 | 1823 | return -EMSGSIZE; |
1da177e4 | 1824 | |
b60c5115 TG |
1825 | ifm = nlmsg_data(nlh); |
1826 | ifm->ifi_family = AF_UNSPEC; | |
1827 | ifm->__ifi_pad = 0; | |
1828 | ifm->ifi_type = dev->type; | |
1829 | ifm->ifi_index = dev->ifindex; | |
1830 | ifm->ifi_flags = dev_get_flags(dev); | |
1831 | ifm->ifi_change = change; | |
1832 | ||
7e4a8d5a | 1833 | if (tgt_netnsid >= 0 && nla_put_s32(skb, IFLA_TARGET_NETNSID, tgt_netnsid)) |
79e1ad14 JB |
1834 | goto nla_put_failure; |
1835 | ||
8a582681 ED |
1836 | netdev_copy_name(dev, devname); |
1837 | if (nla_put_string(skb, IFLA_IFNAME, devname)) | |
1838 | goto nla_put_failure; | |
1839 | ||
ad13b5b0 | 1840 | if (nla_put_u32(skb, IFLA_TXQLEN, READ_ONCE(dev->tx_queue_len)) || |
a6574349 DM |
1841 | nla_put_u8(skb, IFLA_OPERSTATE, |
1842 | netif_running(dev) ? dev->operstate : IF_OPER_DOWN) || | |
1843 | nla_put_u8(skb, IFLA_LINKMODE, dev->link_mode) || | |
1844 | nla_put_u32(skb, IFLA_MTU, dev->mtu) || | |
3e7a50ce SH |
1845 | nla_put_u32(skb, IFLA_MIN_MTU, dev->min_mtu) || |
1846 | nla_put_u32(skb, IFLA_MAX_MTU, dev->max_mtu) || | |
a6574349 | 1847 | nla_put_u32(skb, IFLA_GROUP, dev->group) || |
edbc0bb3 | 1848 | nla_put_u32(skb, IFLA_PROMISCUITY, dev->promiscuity) || |
7e6e1b57 | 1849 | nla_put_u32(skb, IFLA_ALLMULTI, dev->allmulti) || |
76ff5cc9 | 1850 | nla_put_u32(skb, IFLA_NUM_TX_QUEUES, dev->num_tx_queues) || |
c70ce028 ED |
1851 | nla_put_u32(skb, IFLA_GSO_MAX_SEGS, dev->gso_max_segs) || |
1852 | nla_put_u32(skb, IFLA_GSO_MAX_SIZE, dev->gso_max_size) || | |
eac1b93c | 1853 | nla_put_u32(skb, IFLA_GRO_MAX_SIZE, dev->gro_max_size) || |
9eefedd5 XL |
1854 | nla_put_u32(skb, IFLA_GSO_IPV4_MAX_SIZE, dev->gso_ipv4_max_size) || |
1855 | nla_put_u32(skb, IFLA_GRO_IPV4_MAX_SIZE, dev->gro_ipv4_max_size) || | |
89527be8 ED |
1856 | nla_put_u32(skb, IFLA_TSO_MAX_SIZE, dev->tso_max_size) || |
1857 | nla_put_u32(skb, IFLA_TSO_MAX_SEGS, dev->tso_max_segs) || | |
1d69c2b3 | 1858 | #ifdef CONFIG_RPS |
76ff5cc9 | 1859 | nla_put_u32(skb, IFLA_NUM_RX_QUEUES, dev->num_rx_queues) || |
1d69c2b3 | 1860 | #endif |
79110a04 | 1861 | put_master_ifindex(skb, dev) || |
9a57247f | 1862 | nla_put_u8(skb, IFLA_CARRIER, netif_carrier_ok(dev)) || |
6c557001 | 1863 | nla_put_ifalias(skb, dev) || |
2d3b479d | 1864 | nla_put_u32(skb, IFLA_CARRIER_CHANGES, |
b2d3bcfa DD |
1865 | atomic_read(&dev->carrier_up_count) + |
1866 | atomic_read(&dev->carrier_down_count)) || | |
b2d3bcfa DD |
1867 | nla_put_u32(skb, IFLA_CARRIER_UP_COUNT, |
1868 | atomic_read(&dev->carrier_up_count)) || | |
1869 | nla_put_u32(skb, IFLA_CARRIER_DOWN_COUNT, | |
1870 | atomic_read(&dev->carrier_down_count))) | |
a6574349 | 1871 | goto nla_put_failure; |
0b815a1a | 1872 | |
829eb208 RP |
1873 | if (rtnl_fill_proto_down(skb, dev)) |
1874 | goto nla_put_failure; | |
1875 | ||
3d3ea5af VY |
1876 | if (event != IFLA_EVENT_NONE) { |
1877 | if (nla_put_u32(skb, IFLA_EVENT, event)) | |
1878 | goto nla_put_failure; | |
1879 | } | |
1880 | ||
1da177e4 | 1881 | if (dev->addr_len) { |
a6574349 DM |
1882 | if (nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr) || |
1883 | nla_put(skb, IFLA_BROADCAST, dev->addr_len, dev->broadcast)) | |
1884 | goto nla_put_failure; | |
1da177e4 LT |
1885 | } |
1886 | ||
66cae9ed JP |
1887 | if (rtnl_phys_port_id_fill(skb, dev)) |
1888 | goto nla_put_failure; | |
1889 | ||
db24a904 DA |
1890 | if (rtnl_phys_port_name_fill(skb, dev)) |
1891 | goto nla_put_failure; | |
1892 | ||
82f28412 JP |
1893 | if (rtnl_phys_switch_id_fill(skb, dev)) |
1894 | goto nla_put_failure; | |
1895 | ||
b22b941b | 1896 | if (rtnl_fill_stats(skb, dev)) |
10708f37 | 1897 | goto nla_put_failure; |
10708f37 | 1898 | |
250fc3df | 1899 | if (rtnl_fill_vf(skb, dev, ext_filter_mask)) |
a6574349 | 1900 | goto nla_put_failure; |
57b61080 | 1901 | |
c53864fd | 1902 | if (rtnl_port_fill(skb, dev, ext_filter_mask)) |
57b61080 SF |
1903 | goto nla_put_failure; |
1904 | ||
d1fdd913 BB |
1905 | if (rtnl_xdp_fill(skb, dev)) |
1906 | goto nla_put_failure; | |
1907 | ||
ba7d49b1 | 1908 | if (dev->rtnl_link_ops || rtnl_have_link_slave_info(dev)) { |
38f7b870 PM |
1909 | if (rtnl_link_fill(skb, dev) < 0) |
1910 | goto nla_put_failure; | |
1911 | } | |
1912 | ||
d4e4fdf9 | 1913 | if (rtnl_fill_link_netnsid(skb, dev, src_net, gfp)) |
b1e66b9a | 1914 | goto nla_put_failure; |
d37512a2 | 1915 | |
6621dd29 ND |
1916 | if (new_nsid && |
1917 | nla_put_s32(skb, IFLA_NEW_NETNSID, *new_nsid) < 0) | |
1918 | goto nla_put_failure; | |
38e01b30 ND |
1919 | if (new_ifindex && |
1920 | nla_put_s32(skb, IFLA_NEW_IFINDEX, new_ifindex) < 0) | |
1921 | goto nla_put_failure; | |
1922 | ||
f74877a5 MK |
1923 | if (memchr_inv(dev->perm_addr, '\0', dev->addr_len) && |
1924 | nla_put(skb, IFLA_PERM_ADDRESS, dev->addr_len, dev->perm_addr)) | |
1925 | goto nla_put_failure; | |
6621dd29 | 1926 | |
5fa85a09 | 1927 | rcu_read_lock(); |
698419ff ED |
1928 | qdisc = rcu_dereference(dev->qdisc); |
1929 | if (qdisc && nla_put_string(skb, IFLA_QDISC, qdisc->ops->id)) | |
1930 | goto nla_put_failure_rcu; | |
070cbf5b | 1931 | if (rtnl_fill_link_af(skb, dev, ext_filter_mask)) |
5fa85a09 | 1932 | goto nla_put_failure_rcu; |
74808e72 ED |
1933 | if (rtnl_fill_link_ifmap(skb, dev)) |
1934 | goto nla_put_failure_rcu; | |
88f4fb0c | 1935 | if (rtnl_fill_prop_list(skb, dev)) |
0ec4e48c ED |
1936 | goto nla_put_failure_rcu; |
1937 | rcu_read_unlock(); | |
88f4fb0c | 1938 | |
00e77ed8 JB |
1939 | if (dev->dev.parent && |
1940 | nla_put_string(skb, IFLA_PARENT_DEV_NAME, | |
1941 | dev_name(dev->dev.parent))) | |
1942 | goto nla_put_failure; | |
1943 | ||
1944 | if (dev->dev.parent && dev->dev.parent->bus && | |
1945 | nla_put_string(skb, IFLA_PARENT_DEV_BUS_NAME, | |
1946 | dev->dev.parent->bus->name)) | |
1947 | goto nla_put_failure; | |
1948 | ||
dca56c30 JP |
1949 | if (rtnl_fill_devlink_port(skb, dev)) |
1950 | goto nla_put_failure; | |
1951 | ||
5f184269 JP |
1952 | if (rtnl_fill_dpll_pin(skb, dev)) |
1953 | goto nla_put_failure; | |
1954 | ||
053c095a JB |
1955 | nlmsg_end(skb, nlh); |
1956 | return 0; | |
b60c5115 | 1957 | |
5fa85a09 FW |
1958 | nla_put_failure_rcu: |
1959 | rcu_read_unlock(); | |
b60c5115 | 1960 | nla_put_failure: |
26932566 PM |
1961 | nlmsg_cancel(skb, nlh); |
1962 | return -EMSGSIZE; | |
1da177e4 LT |
1963 | } |
1964 | ||
f7b12606 | 1965 | static const struct nla_policy ifla_policy[IFLA_MAX+1] = { |
5176f91e | 1966 | [IFLA_IFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ-1 }, |
38f7b870 PM |
1967 | [IFLA_ADDRESS] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN }, |
1968 | [IFLA_BROADCAST] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN }, | |
5176f91e | 1969 | [IFLA_MAP] = { .len = sizeof(struct rtnl_link_ifmap) }, |
da5e0494 | 1970 | [IFLA_MTU] = { .type = NLA_U32 }, |
76e87306 | 1971 | [IFLA_LINK] = { .type = NLA_U32 }, |
fbaec0ea | 1972 | [IFLA_MASTER] = { .type = NLA_U32 }, |
9a57247f | 1973 | [IFLA_CARRIER] = { .type = NLA_U8 }, |
da5e0494 TG |
1974 | [IFLA_TXQLEN] = { .type = NLA_U32 }, |
1975 | [IFLA_WEIGHT] = { .type = NLA_U32 }, | |
1976 | [IFLA_OPERSTATE] = { .type = NLA_U8 }, | |
1977 | [IFLA_LINKMODE] = { .type = NLA_U8 }, | |
76e87306 | 1978 | [IFLA_LINKINFO] = { .type = NLA_NESTED }, |
d8a5ec67 | 1979 | [IFLA_NET_NS_PID] = { .type = NLA_U32 }, |
f0630529 | 1980 | [IFLA_NET_NS_FD] = { .type = NLA_U32 }, |
2459b4c6 ND |
1981 | /* IFLA_IFALIAS is a string, but policy is set to NLA_BINARY to |
1982 | * allow 0-length string (needed to remove an alias). | |
1983 | */ | |
1984 | [IFLA_IFALIAS] = { .type = NLA_BINARY, .len = IFALIASZ - 1 }, | |
c02db8c6 | 1985 | [IFLA_VFINFO_LIST] = {. type = NLA_NESTED }, |
57b61080 SF |
1986 | [IFLA_VF_PORTS] = { .type = NLA_NESTED }, |
1987 | [IFLA_PORT_SELF] = { .type = NLA_NESTED }, | |
f8ff182c | 1988 | [IFLA_AF_SPEC] = { .type = NLA_NESTED }, |
115c9b81 | 1989 | [IFLA_EXT_MASK] = { .type = NLA_U32 }, |
edbc0bb3 | 1990 | [IFLA_PROMISCUITY] = { .type = NLA_U32 }, |
76ff5cc9 JP |
1991 | [IFLA_NUM_TX_QUEUES] = { .type = NLA_U32 }, |
1992 | [IFLA_NUM_RX_QUEUES] = { .type = NLA_U32 }, | |
46e6b992 SH |
1993 | [IFLA_GSO_MAX_SEGS] = { .type = NLA_U32 }, |
1994 | [IFLA_GSO_MAX_SIZE] = { .type = NLA_U32 }, | |
02637fce | 1995 | [IFLA_PHYS_PORT_ID] = { .type = NLA_BINARY, .len = MAX_PHYS_ITEM_ID_LEN }, |
2d3b479d | 1996 | [IFLA_CARRIER_CHANGES] = { .type = NLA_U32 }, /* ignored */ |
82f28412 | 1997 | [IFLA_PHYS_SWITCH_ID] = { .type = NLA_BINARY, .len = MAX_PHYS_ITEM_ID_LEN }, |
317f4810 | 1998 | [IFLA_LINK_NETNSID] = { .type = NLA_S32 }, |
88d6378b | 1999 | [IFLA_PROTO_DOWN] = { .type = NLA_U8 }, |
d1fdd913 | 2000 | [IFLA_XDP] = { .type = NLA_NESTED }, |
3d3ea5af | 2001 | [IFLA_EVENT] = { .type = NLA_U32 }, |
db833d40 | 2002 | [IFLA_GROUP] = { .type = NLA_U32 }, |
7e4a8d5a | 2003 | [IFLA_TARGET_NETNSID] = { .type = NLA_S32 }, |
b2d3bcfa DD |
2004 | [IFLA_CARRIER_UP_COUNT] = { .type = NLA_U32 }, |
2005 | [IFLA_CARRIER_DOWN_COUNT] = { .type = NLA_U32 }, | |
3e7a50ce SH |
2006 | [IFLA_MIN_MTU] = { .type = NLA_U32 }, |
2007 | [IFLA_MAX_MTU] = { .type = NLA_U32 }, | |
36fbf1e5 JP |
2008 | [IFLA_PROP_LIST] = { .type = NLA_NESTED }, |
2009 | [IFLA_ALT_IFNAME] = { .type = NLA_STRING, | |
2010 | .len = ALTIFNAMSIZ - 1 }, | |
f74877a5 | 2011 | [IFLA_PERM_ADDRESS] = { .type = NLA_REJECT }, |
829eb208 | 2012 | [IFLA_PROTO_DOWN_REASON] = { .type = NLA_NESTED }, |
7e4a5131 | 2013 | [IFLA_NEW_IFINDEX] = NLA_POLICY_MIN(NLA_S32, 1), |
88b71053 | 2014 | [IFLA_PARENT_DEV_NAME] = { .type = NLA_NUL_STRING }, |
eac1b93c | 2015 | [IFLA_GRO_MAX_SIZE] = { .type = NLA_U32 }, |
89527be8 ED |
2016 | [IFLA_TSO_MAX_SIZE] = { .type = NLA_REJECT }, |
2017 | [IFLA_TSO_MAX_SEGS] = { .type = NLA_REJECT }, | |
7e6e1b57 | 2018 | [IFLA_ALLMULTI] = { .type = NLA_REJECT }, |
9eefedd5 XL |
2019 | [IFLA_GSO_IPV4_MAX_SIZE] = { .type = NLA_U32 }, |
2020 | [IFLA_GRO_IPV4_MAX_SIZE] = { .type = NLA_U32 }, | |
da5e0494 TG |
2021 | }; |
2022 | ||
38f7b870 PM |
2023 | static const struct nla_policy ifla_info_policy[IFLA_INFO_MAX+1] = { |
2024 | [IFLA_INFO_KIND] = { .type = NLA_STRING }, | |
2025 | [IFLA_INFO_DATA] = { .type = NLA_NESTED }, | |
ba7d49b1 JP |
2026 | [IFLA_INFO_SLAVE_KIND] = { .type = NLA_STRING }, |
2027 | [IFLA_INFO_SLAVE_DATA] = { .type = NLA_NESTED }, | |
38f7b870 PM |
2028 | }; |
2029 | ||
c02db8c6 | 2030 | static const struct nla_policy ifla_vf_policy[IFLA_VF_MAX+1] = { |
364d5716 | 2031 | [IFLA_VF_MAC] = { .len = sizeof(struct ifla_vf_mac) }, |
75345f88 | 2032 | [IFLA_VF_BROADCAST] = { .type = NLA_REJECT }, |
364d5716 | 2033 | [IFLA_VF_VLAN] = { .len = sizeof(struct ifla_vf_vlan) }, |
79aab093 | 2034 | [IFLA_VF_VLAN_LIST] = { .type = NLA_NESTED }, |
364d5716 DB |
2035 | [IFLA_VF_TX_RATE] = { .len = sizeof(struct ifla_vf_tx_rate) }, |
2036 | [IFLA_VF_SPOOFCHK] = { .len = sizeof(struct ifla_vf_spoofchk) }, | |
2037 | [IFLA_VF_RATE] = { .len = sizeof(struct ifla_vf_rate) }, | |
2038 | [IFLA_VF_LINK_STATE] = { .len = sizeof(struct ifla_vf_link_state) }, | |
01a3d796 | 2039 | [IFLA_VF_RSS_QUERY_EN] = { .len = sizeof(struct ifla_vf_rss_query_en) }, |
3b766cd8 | 2040 | [IFLA_VF_STATS] = { .type = NLA_NESTED }, |
dd461d6a | 2041 | [IFLA_VF_TRUST] = { .len = sizeof(struct ifla_vf_trust) }, |
cc8e27cc EC |
2042 | [IFLA_VF_IB_NODE_GUID] = { .len = sizeof(struct ifla_vf_guid) }, |
2043 | [IFLA_VF_IB_PORT_GUID] = { .len = sizeof(struct ifla_vf_guid) }, | |
3b766cd8 EBE |
2044 | }; |
2045 | ||
57b61080 SF |
2046 | static const struct nla_policy ifla_port_policy[IFLA_PORT_MAX+1] = { |
2047 | [IFLA_PORT_VF] = { .type = NLA_U32 }, | |
2048 | [IFLA_PORT_PROFILE] = { .type = NLA_STRING, | |
2049 | .len = PORT_PROFILE_MAX }, | |
57b61080 SF |
2050 | [IFLA_PORT_INSTANCE_UUID] = { .type = NLA_BINARY, |
2051 | .len = PORT_UUID_MAX }, | |
2052 | [IFLA_PORT_HOST_UUID] = { .type = NLA_STRING, | |
2053 | .len = PORT_UUID_MAX }, | |
2054 | [IFLA_PORT_REQUEST] = { .type = NLA_U8, }, | |
2055 | [IFLA_PORT_RESPONSE] = { .type = NLA_U16, }, | |
025331df DB |
2056 | |
2057 | /* Unused, but we need to keep it here since user space could | |
2058 | * fill it. It's also broken with regard to NLA_BINARY use in | |
2059 | * combination with structs. | |
2060 | */ | |
2061 | [IFLA_PORT_VSI_TYPE] = { .type = NLA_BINARY, | |
2062 | .len = sizeof(struct ifla_port_vsi) }, | |
57b61080 SF |
2063 | }; |
2064 | ||
d1fdd913 | 2065 | static const struct nla_policy ifla_xdp_policy[IFLA_XDP_MAX + 1] = { |
92234c8f | 2066 | [IFLA_XDP_UNSPEC] = { .strict_start_type = IFLA_XDP_EXPECTED_FD }, |
d1fdd913 | 2067 | [IFLA_XDP_FD] = { .type = NLA_S32 }, |
92234c8f | 2068 | [IFLA_XDP_EXPECTED_FD] = { .type = NLA_S32 }, |
d1fdd913 | 2069 | [IFLA_XDP_ATTACHED] = { .type = NLA_U8 }, |
85de8576 | 2070 | [IFLA_XDP_FLAGS] = { .type = NLA_U32 }, |
58038695 | 2071 | [IFLA_XDP_PROG_ID] = { .type = NLA_U32 }, |
d1fdd913 BB |
2072 | }; |
2073 | ||
dc599f76 DA |
2074 | static const struct rtnl_link_ops *linkinfo_to_kind_ops(const struct nlattr *nla) |
2075 | { | |
2076 | const struct rtnl_link_ops *ops = NULL; | |
2077 | struct nlattr *linfo[IFLA_INFO_MAX + 1]; | |
2078 | ||
8cb08174 | 2079 | if (nla_parse_nested_deprecated(linfo, IFLA_INFO_MAX, nla, ifla_info_policy, NULL) < 0) |
dc599f76 DA |
2080 | return NULL; |
2081 | ||
2082 | if (linfo[IFLA_INFO_KIND]) { | |
2083 | char kind[MODULE_NAME_LEN]; | |
2084 | ||
872f6903 | 2085 | nla_strscpy(kind, linfo[IFLA_INFO_KIND], sizeof(kind)); |
dc599f76 DA |
2086 | ops = rtnl_link_ops_get(kind); |
2087 | } | |
2088 | ||
2089 | return ops; | |
2090 | } | |
2091 | ||
2092 | static bool link_master_filtered(struct net_device *dev, int master_idx) | |
2093 | { | |
2094 | struct net_device *master; | |
2095 | ||
2096 | if (!master_idx) | |
2097 | return false; | |
2098 | ||
2099 | master = netdev_master_upper_dev_get(dev); | |
d3432bf1 LS |
2100 | |
2101 | /* 0 is already used to denote IFLA_MASTER wasn't passed, therefore need | |
2102 | * another invalid value for ifindex to denote "no master". | |
2103 | */ | |
2104 | if (master_idx == -1) | |
2105 | return !!master; | |
2106 | ||
dc599f76 DA |
2107 | if (!master || master->ifindex != master_idx) |
2108 | return true; | |
2109 | ||
2110 | return false; | |
2111 | } | |
2112 | ||
2113 | static bool link_kind_filtered(const struct net_device *dev, | |
2114 | const struct rtnl_link_ops *kind_ops) | |
2115 | { | |
2116 | if (kind_ops && dev->rtnl_link_ops != kind_ops) | |
2117 | return true; | |
2118 | ||
2119 | return false; | |
2120 | } | |
2121 | ||
2122 | static bool link_dump_filtered(struct net_device *dev, | |
2123 | int master_idx, | |
2124 | const struct rtnl_link_ops *kind_ops) | |
2125 | { | |
2126 | if (link_master_filtered(dev, master_idx) || | |
2127 | link_kind_filtered(dev, kind_ops)) | |
2128 | return true; | |
2129 | ||
2130 | return false; | |
2131 | } | |
2132 | ||
c383edc4 CB |
2133 | /** |
2134 | * rtnl_get_net_ns_capable - Get netns if sufficiently privileged. | |
2135 | * @sk: netlink socket | |
2136 | * @netnsid: network namespace identifier | |
2137 | * | |
2138 | * Returns the network namespace identified by netnsid on success or an error | |
2139 | * pointer on failure. | |
2140 | */ | |
2141 | struct net *rtnl_get_net_ns_capable(struct sock *sk, int netnsid) | |
79e1ad14 JB |
2142 | { |
2143 | struct net *net; | |
2144 | ||
f428fe4a | 2145 | net = get_net_ns_by_id(sock_net(sk), netnsid); |
79e1ad14 JB |
2146 | if (!net) |
2147 | return ERR_PTR(-EINVAL); | |
2148 | ||
2149 | /* For now, the caller is required to have CAP_NET_ADMIN in | |
2150 | * the user namespace owning the target net ns. | |
2151 | */ | |
f428fe4a | 2152 | if (!sk_ns_capable(sk, net->user_ns, CAP_NET_ADMIN)) { |
79e1ad14 JB |
2153 | put_net(net); |
2154 | return ERR_PTR(-EACCES); | |
2155 | } | |
2156 | return net; | |
2157 | } | |
c383edc4 | 2158 | EXPORT_SYMBOL_GPL(rtnl_get_net_ns_capable); |
79e1ad14 | 2159 | |
905cf0ab DA |
2160 | static int rtnl_valid_dump_ifinfo_req(const struct nlmsghdr *nlh, |
2161 | bool strict_check, struct nlattr **tb, | |
2162 | struct netlink_ext_ack *extack) | |
2163 | { | |
2164 | int hdrlen; | |
2165 | ||
2166 | if (strict_check) { | |
2167 | struct ifinfomsg *ifm; | |
2168 | ||
2169 | if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*ifm))) { | |
2170 | NL_SET_ERR_MSG(extack, "Invalid header for link dump"); | |
2171 | return -EINVAL; | |
2172 | } | |
2173 | ||
2174 | ifm = nlmsg_data(nlh); | |
2175 | if (ifm->__ifi_pad || ifm->ifi_type || ifm->ifi_flags || | |
2176 | ifm->ifi_change) { | |
2177 | NL_SET_ERR_MSG(extack, "Invalid values in header for link dump request"); | |
2178 | return -EINVAL; | |
2179 | } | |
2180 | if (ifm->ifi_index) { | |
2181 | NL_SET_ERR_MSG(extack, "Filter by device index not supported for link dumps"); | |
2182 | return -EINVAL; | |
2183 | } | |
2184 | ||
8cb08174 JB |
2185 | return nlmsg_parse_deprecated_strict(nlh, sizeof(*ifm), tb, |
2186 | IFLA_MAX, ifla_policy, | |
2187 | extack); | |
905cf0ab DA |
2188 | } |
2189 | ||
2190 | /* A hack to preserve kernel<->userspace interface. | |
2191 | * The correct header is ifinfomsg. It is consistent with rtnl_getlink. | |
2192 | * However, before Linux v3.9 the code here assumed rtgenmsg and that's | |
2193 | * what iproute2 < v3.9.0 used. | |
2194 | * We can detect the old iproute2. Even including the IFLA_EXT_MASK | |
2195 | * attribute, its netlink message is shorter than struct ifinfomsg. | |
2196 | */ | |
2197 | hdrlen = nlmsg_len(nlh) < sizeof(struct ifinfomsg) ? | |
2198 | sizeof(struct rtgenmsg) : sizeof(struct ifinfomsg); | |
2199 | ||
8cb08174 JB |
2200 | return nlmsg_parse_deprecated(nlh, hdrlen, tb, IFLA_MAX, ifla_policy, |
2201 | extack); | |
905cf0ab DA |
2202 | } |
2203 | ||
f7b12606 JP |
2204 | static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb) |
2205 | { | |
3e41af90 | 2206 | const struct rtnl_link_ops *kind_ops = NULL; |
905cf0ab DA |
2207 | struct netlink_ext_ack *extack = cb->extack; |
2208 | const struct nlmsghdr *nlh = cb->nlh; | |
f7b12606 | 2209 | struct net *net = sock_net(skb->sk); |
3e41af90 | 2210 | unsigned int flags = NLM_F_MULTI; |
f7b12606 | 2211 | struct nlattr *tb[IFLA_MAX+1]; |
3e41af90 ED |
2212 | struct { |
2213 | unsigned long ifindex; | |
2214 | } *ctx = (void *)cb->ctx; | |
2215 | struct net *tgt_net = net; | |
f7b12606 | 2216 | u32 ext_filter_mask = 0; |
3e41af90 | 2217 | struct net_device *dev; |
dc599f76 | 2218 | int master_idx = 0; |
79e1ad14 | 2219 | int netnsid = -1; |
905cf0ab | 2220 | int err, i; |
f7b12606 | 2221 | |
905cf0ab DA |
2222 | err = rtnl_valid_dump_ifinfo_req(nlh, cb->strict_check, tb, extack); |
2223 | if (err < 0) { | |
2224 | if (cb->strict_check) | |
2225 | return err; | |
2226 | ||
2227 | goto walk_entries; | |
2228 | } | |
2229 | ||
2230 | for (i = 0; i <= IFLA_MAX; ++i) { | |
2231 | if (!tb[i]) | |
2232 | continue; | |
e5eca6d4 | 2233 | |
905cf0ab DA |
2234 | /* new attributes should only be added with strict checking */ |
2235 | switch (i) { | |
2236 | case IFLA_TARGET_NETNSID: | |
2237 | netnsid = nla_get_s32(tb[i]); | |
c383edc4 | 2238 | tgt_net = rtnl_get_net_ns_capable(skb->sk, netnsid); |
905cf0ab DA |
2239 | if (IS_ERR(tgt_net)) { |
2240 | NL_SET_ERR_MSG(extack, "Invalid target network namespace id"); | |
893626d6 | 2241 | return PTR_ERR(tgt_net); |
905cf0ab DA |
2242 | } |
2243 | break; | |
2244 | case IFLA_EXT_MASK: | |
2245 | ext_filter_mask = nla_get_u32(tb[i]); | |
2246 | break; | |
2247 | case IFLA_MASTER: | |
2248 | master_idx = nla_get_u32(tb[i]); | |
2249 | break; | |
2250 | case IFLA_LINKINFO: | |
2251 | kind_ops = linkinfo_to_kind_ops(tb[i]); | |
2252 | break; | |
2253 | default: | |
2254 | if (cb->strict_check) { | |
2255 | NL_SET_ERR_MSG(extack, "Unsupported attribute in link dump request"); | |
2256 | return -EINVAL; | |
2257 | } | |
79e1ad14 | 2258 | } |
f7b12606 JP |
2259 | } |
2260 | ||
905cf0ab DA |
2261 | if (master_idx || kind_ops) |
2262 | flags |= NLM_F_DUMP_FILTERED; | |
2263 | ||
2264 | walk_entries: | |
3e41af90 ED |
2265 | err = 0; |
2266 | for_each_netdev_dump(tgt_net, dev, ctx->ifindex) { | |
2267 | if (link_dump_filtered(dev, master_idx, kind_ops)) | |
2268 | continue; | |
2269 | err = rtnl_fill_ifinfo(skb, dev, net, RTM_NEWLINK, | |
2270 | NETLINK_CB(cb->skb).portid, | |
2271 | nlh->nlmsg_seq, 0, flags, | |
2272 | ext_filter_mask, 0, NULL, 0, | |
2273 | netnsid, GFP_KERNEL); | |
02e24903 | 2274 | if (err < 0) |
3e41af90 | 2275 | break; |
f7b12606 | 2276 | } |
a9ecb0cb | 2277 | cb->seq = tgt_net->dev_base_seq; |
d0225784 | 2278 | nl_dump_check_consistent(cb, nlmsg_hdr(skb)); |
79e1ad14 JB |
2279 | if (netnsid >= 0) |
2280 | put_net(tgt_net); | |
f7b12606 | 2281 | |
f6c5775f | 2282 | return err; |
f7b12606 JP |
2283 | } |
2284 | ||
f534f658 JK |
2285 | int rtnl_nla_parse_ifinfomsg(struct nlattr **tb, const struct nlattr *nla_peer, |
2286 | struct netlink_ext_ack *exterr) | |
f7b12606 | 2287 | { |
f534f658 JK |
2288 | const struct ifinfomsg *ifmp; |
2289 | const struct nlattr *attrs; | |
2290 | size_t len; | |
2291 | ||
2292 | ifmp = nla_data(nla_peer); | |
2293 | attrs = nla_data(nla_peer) + sizeof(struct ifinfomsg); | |
2294 | len = nla_len(nla_peer) - sizeof(struct ifinfomsg); | |
2295 | ||
2296 | if (ifmp->ifi_index < 0) { | |
2297 | NL_SET_ERR_MSG_ATTR(exterr, nla_peer, | |
2298 | "ifindex can't be negative"); | |
2299 | return -EINVAL; | |
2300 | } | |
2301 | ||
2302 | return nla_parse_deprecated(tb, IFLA_MAX, attrs, len, ifla_policy, | |
8cb08174 | 2303 | exterr); |
f7b12606 | 2304 | } |
f534f658 | 2305 | EXPORT_SYMBOL(rtnl_nla_parse_ifinfomsg); |
f7b12606 | 2306 | |
81adee47 EB |
2307 | struct net *rtnl_link_get_net(struct net *src_net, struct nlattr *tb[]) |
2308 | { | |
2309 | struct net *net; | |
2310 | /* Examine the link attributes and figure out which | |
2311 | * network namespace we are talking about. | |
2312 | */ | |
2313 | if (tb[IFLA_NET_NS_PID]) | |
2314 | net = get_net_ns_by_pid(nla_get_u32(tb[IFLA_NET_NS_PID])); | |
f0630529 EB |
2315 | else if (tb[IFLA_NET_NS_FD]) |
2316 | net = get_net_ns_by_fd(nla_get_u32(tb[IFLA_NET_NS_FD])); | |
81adee47 EB |
2317 | else |
2318 | net = get_net(src_net); | |
2319 | return net; | |
2320 | } | |
2321 | EXPORT_SYMBOL(rtnl_link_get_net); | |
2322 | ||
7c4f63ba CB |
2323 | /* Figure out which network namespace we are talking about by |
2324 | * examining the link attributes in the following order: | |
2325 | * | |
2326 | * 1. IFLA_NET_NS_PID | |
2327 | * 2. IFLA_NET_NS_FD | |
7e4a8d5a | 2328 | * 3. IFLA_TARGET_NETNSID |
7c4f63ba CB |
2329 | */ |
2330 | static struct net *rtnl_link_get_net_by_nlattr(struct net *src_net, | |
2331 | struct nlattr *tb[]) | |
2332 | { | |
2333 | struct net *net; | |
2334 | ||
2335 | if (tb[IFLA_NET_NS_PID] || tb[IFLA_NET_NS_FD]) | |
2336 | return rtnl_link_get_net(src_net, tb); | |
2337 | ||
7e4a8d5a | 2338 | if (!tb[IFLA_TARGET_NETNSID]) |
7c4f63ba CB |
2339 | return get_net(src_net); |
2340 | ||
7e4a8d5a | 2341 | net = get_net_ns_by_id(src_net, nla_get_u32(tb[IFLA_TARGET_NETNSID])); |
7c4f63ba CB |
2342 | if (!net) |
2343 | return ERR_PTR(-EINVAL); | |
2344 | ||
2345 | return net; | |
2346 | } | |
2347 | ||
2348 | static struct net *rtnl_link_get_net_capable(const struct sk_buff *skb, | |
2349 | struct net *src_net, | |
2350 | struct nlattr *tb[], int cap) | |
2351 | { | |
2352 | struct net *net; | |
2353 | ||
2354 | net = rtnl_link_get_net_by_nlattr(src_net, tb); | |
2355 | if (IS_ERR(net)) | |
2356 | return net; | |
2357 | ||
2358 | if (!netlink_ns_capable(skb, net->user_ns, cap)) { | |
2359 | put_net(net); | |
2360 | return ERR_PTR(-EPERM); | |
2361 | } | |
2362 | ||
2363 | return net; | |
2364 | } | |
2365 | ||
4ff66cae CB |
2366 | /* Verify that rtnetlink requests do not pass additional properties |
2367 | * potentially referring to different network namespaces. | |
2368 | */ | |
2369 | static int rtnl_ensure_unique_netns(struct nlattr *tb[], | |
2370 | struct netlink_ext_ack *extack, | |
2371 | bool netns_id_only) | |
2372 | { | |
2373 | ||
2374 | if (netns_id_only) { | |
2375 | if (!tb[IFLA_NET_NS_PID] && !tb[IFLA_NET_NS_FD]) | |
2376 | return 0; | |
2377 | ||
2378 | NL_SET_ERR_MSG(extack, "specified netns attribute not supported"); | |
2379 | return -EOPNOTSUPP; | |
2380 | } | |
2381 | ||
7e4a8d5a | 2382 | if (tb[IFLA_TARGET_NETNSID] && (tb[IFLA_NET_NS_PID] || tb[IFLA_NET_NS_FD])) |
4ff66cae CB |
2383 | goto invalid_attr; |
2384 | ||
7e4a8d5a | 2385 | if (tb[IFLA_NET_NS_PID] && (tb[IFLA_TARGET_NETNSID] || tb[IFLA_NET_NS_FD])) |
4ff66cae CB |
2386 | goto invalid_attr; |
2387 | ||
7e4a8d5a | 2388 | if (tb[IFLA_NET_NS_FD] && (tb[IFLA_TARGET_NETNSID] || tb[IFLA_NET_NS_PID])) |
4ff66cae CB |
2389 | goto invalid_attr; |
2390 | ||
2391 | return 0; | |
2392 | ||
2393 | invalid_attr: | |
2394 | NL_SET_ERR_MSG(extack, "multiple netns identifying attributes specified"); | |
2395 | return -EINVAL; | |
2396 | } | |
2397 | ||
a14857c2 BC |
2398 | static int rtnl_set_vf_rate(struct net_device *dev, int vf, int min_tx_rate, |
2399 | int max_tx_rate) | |
2400 | { | |
2401 | const struct net_device_ops *ops = dev->netdev_ops; | |
2402 | ||
2403 | if (!ops->ndo_set_vf_rate) | |
2404 | return -EOPNOTSUPP; | |
2405 | if (max_tx_rate && max_tx_rate < min_tx_rate) | |
2406 | return -EINVAL; | |
2407 | ||
2408 | return ops->ndo_set_vf_rate(dev, vf, min_tx_rate, max_tx_rate); | |
2409 | } | |
2410 | ||
8679c31e RY |
2411 | static int validate_linkmsg(struct net_device *dev, struct nlattr *tb[], |
2412 | struct netlink_ext_ack *extack) | |
1840bb13 | 2413 | { |
89da780a XL |
2414 | if (tb[IFLA_ADDRESS] && |
2415 | nla_len(tb[IFLA_ADDRESS]) < dev->addr_len) | |
2416 | return -EINVAL; | |
1840bb13 | 2417 | |
89da780a XL |
2418 | if (tb[IFLA_BROADCAST] && |
2419 | nla_len(tb[IFLA_BROADCAST]) < dev->addr_len) | |
2420 | return -EINVAL; | |
fef5b228 | 2421 | |
89da780a XL |
2422 | if (tb[IFLA_GSO_MAX_SIZE] && |
2423 | nla_get_u32(tb[IFLA_GSO_MAX_SIZE]) > dev->tso_max_size) { | |
2424 | NL_SET_ERR_MSG(extack, "too big gso_max_size"); | |
2425 | return -EINVAL; | |
2426 | } | |
fef5b228 | 2427 | |
89da780a XL |
2428 | if (tb[IFLA_GSO_MAX_SEGS] && |
2429 | (nla_get_u32(tb[IFLA_GSO_MAX_SEGS]) > GSO_MAX_SEGS || | |
2430 | nla_get_u32(tb[IFLA_GSO_MAX_SEGS]) > dev->tso_max_segs)) { | |
2431 | NL_SET_ERR_MSG(extack, "too big gso_max_segs"); | |
2432 | return -EINVAL; | |
2433 | } | |
fef5b228 | 2434 | |
89da780a XL |
2435 | if (tb[IFLA_GRO_MAX_SIZE] && |
2436 | nla_get_u32(tb[IFLA_GRO_MAX_SIZE]) > GRO_MAX_SIZE) { | |
2437 | NL_SET_ERR_MSG(extack, "too big gro_max_size"); | |
2438 | return -EINVAL; | |
2439 | } | |
65d6914e | 2440 | |
89da780a XL |
2441 | if (tb[IFLA_GSO_IPV4_MAX_SIZE] && |
2442 | nla_get_u32(tb[IFLA_GSO_IPV4_MAX_SIZE]) > dev->tso_max_size) { | |
2443 | NL_SET_ERR_MSG(extack, "too big gso_ipv4_max_size"); | |
2444 | return -EINVAL; | |
2445 | } | |
65d6914e | 2446 | |
89da780a XL |
2447 | if (tb[IFLA_GRO_IPV4_MAX_SIZE] && |
2448 | nla_get_u32(tb[IFLA_GRO_IPV4_MAX_SIZE]) > GRO_MAX_SIZE) { | |
2449 | NL_SET_ERR_MSG(extack, "too big gro_ipv4_max_size"); | |
2450 | return -EINVAL; | |
1840bb13 TG |
2451 | } |
2452 | ||
cf7afbfe TG |
2453 | if (tb[IFLA_AF_SPEC]) { |
2454 | struct nlattr *af; | |
2455 | int rem, err; | |
2456 | ||
2457 | nla_for_each_nested(af, tb[IFLA_AF_SPEC], rem) { | |
2458 | const struct rtnl_af_ops *af_ops; | |
2459 | ||
5fa85a09 | 2460 | af_ops = rtnl_af_lookup(nla_type(af)); |
a100243d | 2461 | if (!af_ops) |
cf7afbfe TG |
2462 | return -EAFNOSUPPORT; |
2463 | ||
a100243d | 2464 | if (!af_ops->set_link_af) |
cf7afbfe TG |
2465 | return -EOPNOTSUPP; |
2466 | ||
2467 | if (af_ops->validate_link_af) { | |
8679c31e | 2468 | err = af_ops->validate_link_af(dev, af, extack); |
a100243d | 2469 | if (err < 0) |
cf7afbfe TG |
2470 | return err; |
2471 | } | |
2472 | } | |
2473 | } | |
2474 | ||
1840bb13 TG |
2475 | return 0; |
2476 | } | |
2477 | ||
cc8e27cc EC |
2478 | static int handle_infiniband_guid(struct net_device *dev, struct ifla_vf_guid *ivt, |
2479 | int guid_type) | |
2480 | { | |
2481 | const struct net_device_ops *ops = dev->netdev_ops; | |
2482 | ||
2483 | return ops->ndo_set_vf_guid(dev, ivt->vf, ivt->guid, guid_type); | |
2484 | } | |
2485 | ||
2486 | static int handle_vf_guid(struct net_device *dev, struct ifla_vf_guid *ivt, int guid_type) | |
2487 | { | |
2488 | if (dev->type != ARPHRD_INFINIBAND) | |
2489 | return -EOPNOTSUPP; | |
2490 | ||
2491 | return handle_infiniband_guid(dev, ivt, guid_type); | |
2492 | } | |
2493 | ||
4f7d2cdf | 2494 | static int do_setvfinfo(struct net_device *dev, struct nlattr **tb) |
c02db8c6 | 2495 | { |
c02db8c6 | 2496 | const struct net_device_ops *ops = dev->netdev_ops; |
4f7d2cdf | 2497 | int err = -EINVAL; |
c02db8c6 | 2498 | |
4f7d2cdf DB |
2499 | if (tb[IFLA_VF_MAC]) { |
2500 | struct ifla_vf_mac *ivm = nla_data(tb[IFLA_VF_MAC]); | |
01a3d796 | 2501 | |
ff08ddba DC |
2502 | if (ivm->vf >= INT_MAX) |
2503 | return -EINVAL; | |
4f7d2cdf DB |
2504 | err = -EOPNOTSUPP; |
2505 | if (ops->ndo_set_vf_mac) | |
2506 | err = ops->ndo_set_vf_mac(dev, ivm->vf, | |
2507 | ivm->mac); | |
2508 | if (err < 0) | |
2509 | return err; | |
2510 | } | |
2511 | ||
2512 | if (tb[IFLA_VF_VLAN]) { | |
2513 | struct ifla_vf_vlan *ivv = nla_data(tb[IFLA_VF_VLAN]); | |
2514 | ||
ff08ddba DC |
2515 | if (ivv->vf >= INT_MAX) |
2516 | return -EINVAL; | |
4f7d2cdf DB |
2517 | err = -EOPNOTSUPP; |
2518 | if (ops->ndo_set_vf_vlan) | |
2519 | err = ops->ndo_set_vf_vlan(dev, ivv->vf, ivv->vlan, | |
79aab093 MS |
2520 | ivv->qos, |
2521 | htons(ETH_P_8021Q)); | |
2522 | if (err < 0) | |
2523 | return err; | |
2524 | } | |
2525 | ||
2526 | if (tb[IFLA_VF_VLAN_LIST]) { | |
2527 | struct ifla_vf_vlan_info *ivvl[MAX_VLAN_LIST_LEN]; | |
2528 | struct nlattr *attr; | |
2529 | int rem, len = 0; | |
2530 | ||
2531 | err = -EOPNOTSUPP; | |
2532 | if (!ops->ndo_set_vf_vlan) | |
2533 | return err; | |
2534 | ||
2535 | nla_for_each_nested(attr, tb[IFLA_VF_VLAN_LIST], rem) { | |
2536 | if (nla_type(attr) != IFLA_VF_VLAN_INFO || | |
2537 | nla_len(attr) < NLA_HDRLEN) { | |
2538 | return -EINVAL; | |
2539 | } | |
2540 | if (len >= MAX_VLAN_LIST_LEN) | |
2541 | return -EOPNOTSUPP; | |
2542 | ivvl[len] = nla_data(attr); | |
2543 | ||
2544 | len++; | |
2545 | } | |
fa34cd94 AB |
2546 | if (len == 0) |
2547 | return -EINVAL; | |
2548 | ||
ff08ddba DC |
2549 | if (ivvl[0]->vf >= INT_MAX) |
2550 | return -EINVAL; | |
79aab093 MS |
2551 | err = ops->ndo_set_vf_vlan(dev, ivvl[0]->vf, ivvl[0]->vlan, |
2552 | ivvl[0]->qos, ivvl[0]->vlan_proto); | |
4f7d2cdf DB |
2553 | if (err < 0) |
2554 | return err; | |
c02db8c6 | 2555 | } |
4f7d2cdf DB |
2556 | |
2557 | if (tb[IFLA_VF_TX_RATE]) { | |
2558 | struct ifla_vf_tx_rate *ivt = nla_data(tb[IFLA_VF_TX_RATE]); | |
2559 | struct ifla_vf_info ivf; | |
2560 | ||
ff08ddba DC |
2561 | if (ivt->vf >= INT_MAX) |
2562 | return -EINVAL; | |
4f7d2cdf DB |
2563 | err = -EOPNOTSUPP; |
2564 | if (ops->ndo_get_vf_config) | |
2565 | err = ops->ndo_get_vf_config(dev, ivt->vf, &ivf); | |
2566 | if (err < 0) | |
2567 | return err; | |
2568 | ||
a14857c2 BC |
2569 | err = rtnl_set_vf_rate(dev, ivt->vf, |
2570 | ivf.min_tx_rate, ivt->rate); | |
4f7d2cdf DB |
2571 | if (err < 0) |
2572 | return err; | |
2573 | } | |
2574 | ||
2575 | if (tb[IFLA_VF_RATE]) { | |
2576 | struct ifla_vf_rate *ivt = nla_data(tb[IFLA_VF_RATE]); | |
2577 | ||
ff08ddba DC |
2578 | if (ivt->vf >= INT_MAX) |
2579 | return -EINVAL; | |
a14857c2 BC |
2580 | |
2581 | err = rtnl_set_vf_rate(dev, ivt->vf, | |
2582 | ivt->min_tx_rate, ivt->max_tx_rate); | |
4f7d2cdf DB |
2583 | if (err < 0) |
2584 | return err; | |
2585 | } | |
2586 | ||
2587 | if (tb[IFLA_VF_SPOOFCHK]) { | |
2588 | struct ifla_vf_spoofchk *ivs = nla_data(tb[IFLA_VF_SPOOFCHK]); | |
2589 | ||
ff08ddba DC |
2590 | if (ivs->vf >= INT_MAX) |
2591 | return -EINVAL; | |
4f7d2cdf DB |
2592 | err = -EOPNOTSUPP; |
2593 | if (ops->ndo_set_vf_spoofchk) | |
2594 | err = ops->ndo_set_vf_spoofchk(dev, ivs->vf, | |
2595 | ivs->setting); | |
2596 | if (err < 0) | |
2597 | return err; | |
2598 | } | |
2599 | ||
2600 | if (tb[IFLA_VF_LINK_STATE]) { | |
2601 | struct ifla_vf_link_state *ivl = nla_data(tb[IFLA_VF_LINK_STATE]); | |
2602 | ||
ff08ddba DC |
2603 | if (ivl->vf >= INT_MAX) |
2604 | return -EINVAL; | |
4f7d2cdf DB |
2605 | err = -EOPNOTSUPP; |
2606 | if (ops->ndo_set_vf_link_state) | |
2607 | err = ops->ndo_set_vf_link_state(dev, ivl->vf, | |
2608 | ivl->link_state); | |
2609 | if (err < 0) | |
2610 | return err; | |
2611 | } | |
2612 | ||
2613 | if (tb[IFLA_VF_RSS_QUERY_EN]) { | |
2614 | struct ifla_vf_rss_query_en *ivrssq_en; | |
2615 | ||
2616 | err = -EOPNOTSUPP; | |
2617 | ivrssq_en = nla_data(tb[IFLA_VF_RSS_QUERY_EN]); | |
ff08ddba DC |
2618 | if (ivrssq_en->vf >= INT_MAX) |
2619 | return -EINVAL; | |
4f7d2cdf DB |
2620 | if (ops->ndo_set_vf_rss_query_en) |
2621 | err = ops->ndo_set_vf_rss_query_en(dev, ivrssq_en->vf, | |
2622 | ivrssq_en->setting); | |
2623 | if (err < 0) | |
2624 | return err; | |
2625 | } | |
2626 | ||
dd461d6a HS |
2627 | if (tb[IFLA_VF_TRUST]) { |
2628 | struct ifla_vf_trust *ivt = nla_data(tb[IFLA_VF_TRUST]); | |
2629 | ||
ff08ddba DC |
2630 | if (ivt->vf >= INT_MAX) |
2631 | return -EINVAL; | |
dd461d6a HS |
2632 | err = -EOPNOTSUPP; |
2633 | if (ops->ndo_set_vf_trust) | |
2634 | err = ops->ndo_set_vf_trust(dev, ivt->vf, ivt->setting); | |
2635 | if (err < 0) | |
2636 | return err; | |
2637 | } | |
2638 | ||
cc8e27cc EC |
2639 | if (tb[IFLA_VF_IB_NODE_GUID]) { |
2640 | struct ifla_vf_guid *ivt = nla_data(tb[IFLA_VF_IB_NODE_GUID]); | |
2641 | ||
ff08ddba DC |
2642 | if (ivt->vf >= INT_MAX) |
2643 | return -EINVAL; | |
cc8e27cc EC |
2644 | if (!ops->ndo_set_vf_guid) |
2645 | return -EOPNOTSUPP; | |
cc8e27cc EC |
2646 | return handle_vf_guid(dev, ivt, IFLA_VF_IB_NODE_GUID); |
2647 | } | |
2648 | ||
2649 | if (tb[IFLA_VF_IB_PORT_GUID]) { | |
2650 | struct ifla_vf_guid *ivt = nla_data(tb[IFLA_VF_IB_PORT_GUID]); | |
2651 | ||
ff08ddba DC |
2652 | if (ivt->vf >= INT_MAX) |
2653 | return -EINVAL; | |
cc8e27cc EC |
2654 | if (!ops->ndo_set_vf_guid) |
2655 | return -EOPNOTSUPP; | |
2656 | ||
2657 | return handle_vf_guid(dev, ivt, IFLA_VF_IB_PORT_GUID); | |
2658 | } | |
2659 | ||
c02db8c6 CW |
2660 | return err; |
2661 | } | |
2662 | ||
33eaf2a6 DA |
2663 | static int do_set_master(struct net_device *dev, int ifindex, |
2664 | struct netlink_ext_ack *extack) | |
fbaec0ea | 2665 | { |
898e5061 | 2666 | struct net_device *upper_dev = netdev_master_upper_dev_get(dev); |
fbaec0ea JP |
2667 | const struct net_device_ops *ops; |
2668 | int err; | |
2669 | ||
898e5061 JP |
2670 | if (upper_dev) { |
2671 | if (upper_dev->ifindex == ifindex) | |
fbaec0ea | 2672 | return 0; |
898e5061 | 2673 | ops = upper_dev->netdev_ops; |
fbaec0ea | 2674 | if (ops->ndo_del_slave) { |
898e5061 | 2675 | err = ops->ndo_del_slave(upper_dev, dev); |
fbaec0ea JP |
2676 | if (err) |
2677 | return err; | |
2678 | } else { | |
2679 | return -EOPNOTSUPP; | |
2680 | } | |
2681 | } | |
2682 | ||
2683 | if (ifindex) { | |
898e5061 JP |
2684 | upper_dev = __dev_get_by_index(dev_net(dev), ifindex); |
2685 | if (!upper_dev) | |
fbaec0ea | 2686 | return -EINVAL; |
898e5061 | 2687 | ops = upper_dev->netdev_ops; |
fbaec0ea | 2688 | if (ops->ndo_add_slave) { |
33eaf2a6 | 2689 | err = ops->ndo_add_slave(upper_dev, dev, extack); |
fbaec0ea JP |
2690 | if (err) |
2691 | return err; | |
2692 | } else { | |
2693 | return -EOPNOTSUPP; | |
2694 | } | |
2695 | } | |
2696 | return 0; | |
2697 | } | |
2698 | ||
829eb208 RP |
2699 | static const struct nla_policy ifla_proto_down_reason_policy[IFLA_PROTO_DOWN_REASON_VALUE + 1] = { |
2700 | [IFLA_PROTO_DOWN_REASON_MASK] = { .type = NLA_U32 }, | |
2701 | [IFLA_PROTO_DOWN_REASON_VALUE] = { .type = NLA_U32 }, | |
2702 | }; | |
2703 | ||
2704 | static int do_set_proto_down(struct net_device *dev, | |
2705 | struct nlattr *nl_proto_down, | |
2706 | struct nlattr *nl_proto_down_reason, | |
2707 | struct netlink_ext_ack *extack) | |
2708 | { | |
2709 | struct nlattr *pdreason[IFLA_PROTO_DOWN_REASON_MAX + 1]; | |
829eb208 RP |
2710 | unsigned long mask = 0; |
2711 | u32 value; | |
2712 | bool proto_down; | |
2713 | int err; | |
2714 | ||
2106efda | 2715 | if (!(dev->priv_flags & IFF_CHANGE_PROTO_DOWN)) { |
829eb208 RP |
2716 | NL_SET_ERR_MSG(extack, "Protodown not supported by device"); |
2717 | return -EOPNOTSUPP; | |
2718 | } | |
2719 | ||
2720 | if (nl_proto_down_reason) { | |
2721 | err = nla_parse_nested_deprecated(pdreason, | |
2722 | IFLA_PROTO_DOWN_REASON_MAX, | |
2723 | nl_proto_down_reason, | |
2724 | ifla_proto_down_reason_policy, | |
2725 | NULL); | |
2726 | if (err < 0) | |
2727 | return err; | |
2728 | ||
2729 | if (!pdreason[IFLA_PROTO_DOWN_REASON_VALUE]) { | |
2730 | NL_SET_ERR_MSG(extack, "Invalid protodown reason value"); | |
2731 | return -EINVAL; | |
2732 | } | |
2733 | ||
2734 | value = nla_get_u32(pdreason[IFLA_PROTO_DOWN_REASON_VALUE]); | |
2735 | ||
2736 | if (pdreason[IFLA_PROTO_DOWN_REASON_MASK]) | |
2737 | mask = nla_get_u32(pdreason[IFLA_PROTO_DOWN_REASON_MASK]); | |
2738 | ||
2739 | dev_change_proto_down_reason(dev, mask, value); | |
2740 | } | |
2741 | ||
2742 | if (nl_proto_down) { | |
2743 | proto_down = nla_get_u8(nl_proto_down); | |
2744 | ||
d467d0bc | 2745 | /* Don't turn off protodown if there are active reasons */ |
829eb208 RP |
2746 | if (!proto_down && dev->proto_down_reason) { |
2747 | NL_SET_ERR_MSG(extack, "Cannot clear protodown, active reasons"); | |
2748 | return -EBUSY; | |
2749 | } | |
2750 | err = dev_change_proto_down(dev, | |
2751 | proto_down); | |
2752 | if (err) | |
2753 | return err; | |
2754 | } | |
2755 | ||
2756 | return 0; | |
2757 | } | |
2758 | ||
90c325e3 | 2759 | #define DO_SETLINK_MODIFIED 0x01 |
ba998906 ND |
2760 | /* notify flag means notify + modified. */ |
2761 | #define DO_SETLINK_NOTIFY 0x03 | |
90f62cf3 EB |
2762 | static int do_setlink(const struct sk_buff *skb, |
2763 | struct net_device *dev, struct ifinfomsg *ifm, | |
ddf9f970 | 2764 | struct netlink_ext_ack *extack, |
5ea08b52 | 2765 | struct nlattr **tb, int status) |
1da177e4 | 2766 | { |
d314774c | 2767 | const struct net_device_ops *ops = dev->netdev_ops; |
5ea08b52 | 2768 | char ifname[IFNAMSIZ]; |
0157f60c | 2769 | int err; |
1da177e4 | 2770 | |
5ea08b52 FF |
2771 | if (tb[IFLA_IFNAME]) |
2772 | nla_strscpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
2773 | else | |
2774 | ifname[0] = '\0'; | |
2775 | ||
7e4a8d5a | 2776 | if (tb[IFLA_NET_NS_PID] || tb[IFLA_NET_NS_FD] || tb[IFLA_TARGET_NETNSID]) { |
5ea08b52 | 2777 | const char *pat = ifname[0] ? ifname : NULL; |
eeb85a14 AV |
2778 | struct net *net; |
2779 | int new_ifindex; | |
2780 | ||
2781 | net = rtnl_link_get_net_capable(skb, dev_net(dev), | |
2782 | tb, CAP_NET_ADMIN); | |
d8a5ec67 EB |
2783 | if (IS_ERR(net)) { |
2784 | err = PTR_ERR(net); | |
2785 | goto errout; | |
2786 | } | |
7c4f63ba | 2787 | |
eeb85a14 AV |
2788 | if (tb[IFLA_NEW_IFINDEX]) |
2789 | new_ifindex = nla_get_s32(tb[IFLA_NEW_IFINDEX]); | |
2790 | else | |
2791 | new_ifindex = 0; | |
2792 | ||
96a6b93b | 2793 | err = __dev_change_net_namespace(dev, net, pat, new_ifindex); |
d8a5ec67 EB |
2794 | put_net(net); |
2795 | if (err) | |
2796 | goto errout; | |
90c325e3 | 2797 | status |= DO_SETLINK_MODIFIED; |
d8a5ec67 EB |
2798 | } |
2799 | ||
da5e0494 | 2800 | if (tb[IFLA_MAP]) { |
1da177e4 LT |
2801 | struct rtnl_link_ifmap *u_map; |
2802 | struct ifmap k_map; | |
2803 | ||
d314774c | 2804 | if (!ops->ndo_set_config) { |
1da177e4 | 2805 | err = -EOPNOTSUPP; |
0157f60c | 2806 | goto errout; |
1da177e4 LT |
2807 | } |
2808 | ||
2809 | if (!netif_device_present(dev)) { | |
2810 | err = -ENODEV; | |
0157f60c | 2811 | goto errout; |
1da177e4 | 2812 | } |
1da177e4 | 2813 | |
da5e0494 | 2814 | u_map = nla_data(tb[IFLA_MAP]); |
1da177e4 LT |
2815 | k_map.mem_start = (unsigned long) u_map->mem_start; |
2816 | k_map.mem_end = (unsigned long) u_map->mem_end; | |
2817 | k_map.base_addr = (unsigned short) u_map->base_addr; | |
2818 | k_map.irq = (unsigned char) u_map->irq; | |
2819 | k_map.dma = (unsigned char) u_map->dma; | |
2820 | k_map.port = (unsigned char) u_map->port; | |
2821 | ||
d314774c | 2822 | err = ops->ndo_set_config(dev, &k_map); |
da5e0494 | 2823 | if (err < 0) |
0157f60c | 2824 | goto errout; |
1da177e4 | 2825 | |
ba998906 | 2826 | status |= DO_SETLINK_NOTIFY; |
1da177e4 LT |
2827 | } |
2828 | ||
da5e0494 | 2829 | if (tb[IFLA_ADDRESS]) { |
70f8e78e DM |
2830 | struct sockaddr *sa; |
2831 | int len; | |
2832 | ||
153711f9 WC |
2833 | len = sizeof(sa_family_t) + max_t(size_t, dev->addr_len, |
2834 | sizeof(*sa)); | |
70f8e78e DM |
2835 | sa = kmalloc(len, GFP_KERNEL); |
2836 | if (!sa) { | |
2837 | err = -ENOMEM; | |
0157f60c | 2838 | goto errout; |
70f8e78e DM |
2839 | } |
2840 | sa->sa_family = dev->type; | |
da5e0494 | 2841 | memcpy(sa->sa_data, nla_data(tb[IFLA_ADDRESS]), |
70f8e78e | 2842 | dev->addr_len); |
3b23a32a | 2843 | err = dev_set_mac_address_user(dev, sa, extack); |
70f8e78e | 2844 | kfree(sa); |
1da177e4 | 2845 | if (err) |
0157f60c | 2846 | goto errout; |
90c325e3 | 2847 | status |= DO_SETLINK_MODIFIED; |
1da177e4 LT |
2848 | } |
2849 | ||
da5e0494 | 2850 | if (tb[IFLA_MTU]) { |
7a4c53be | 2851 | err = dev_set_mtu_ext(dev, nla_get_u32(tb[IFLA_MTU]), extack); |
da5e0494 | 2852 | if (err < 0) |
0157f60c | 2853 | goto errout; |
90c325e3 | 2854 | status |= DO_SETLINK_MODIFIED; |
1da177e4 LT |
2855 | } |
2856 | ||
cbda10fa VD |
2857 | if (tb[IFLA_GROUP]) { |
2858 | dev_set_group(dev, nla_get_u32(tb[IFLA_GROUP])); | |
ba998906 | 2859 | status |= DO_SETLINK_NOTIFY; |
cbda10fa VD |
2860 | } |
2861 | ||
da5e0494 TG |
2862 | /* |
2863 | * Interface selected by interface index but interface | |
2864 | * name provided implies that a name change has been | |
2865 | * requested. | |
2866 | */ | |
51055be8 | 2867 | if (ifm->ifi_index > 0 && ifname[0]) { |
da5e0494 TG |
2868 | err = dev_change_name(dev, ifname); |
2869 | if (err < 0) | |
0157f60c | 2870 | goto errout; |
90c325e3 | 2871 | status |= DO_SETLINK_MODIFIED; |
1da177e4 LT |
2872 | } |
2873 | ||
0b815a1a SH |
2874 | if (tb[IFLA_IFALIAS]) { |
2875 | err = dev_set_alias(dev, nla_data(tb[IFLA_IFALIAS]), | |
2876 | nla_len(tb[IFLA_IFALIAS])); | |
2877 | if (err < 0) | |
2878 | goto errout; | |
ba998906 | 2879 | status |= DO_SETLINK_NOTIFY; |
0b815a1a SH |
2880 | } |
2881 | ||
da5e0494 TG |
2882 | if (tb[IFLA_BROADCAST]) { |
2883 | nla_memcpy(dev->broadcast, tb[IFLA_BROADCAST], dev->addr_len); | |
e7c3273e | 2884 | call_netdevice_notifiers(NETDEV_CHANGEADDR, dev); |
1da177e4 LT |
2885 | } |
2886 | ||
a4abfa62 PS |
2887 | if (ifm->ifi_flags || ifm->ifi_change) { |
2888 | err = dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm), | |
2889 | extack); | |
2890 | if (err < 0) | |
2891 | goto errout; | |
2892 | } | |
2893 | ||
ec4ffd10 ND |
2894 | if (tb[IFLA_MASTER]) { |
2895 | err = do_set_master(dev, nla_get_u32(tb[IFLA_MASTER]), extack); | |
2896 | if (err) | |
2897 | goto errout; | |
2898 | status |= DO_SETLINK_MODIFIED; | |
2899 | } | |
2900 | ||
9a57247f JP |
2901 | if (tb[IFLA_CARRIER]) { |
2902 | err = dev_change_carrier(dev, nla_get_u8(tb[IFLA_CARRIER])); | |
2903 | if (err) | |
2904 | goto errout; | |
90c325e3 | 2905 | status |= DO_SETLINK_MODIFIED; |
9a57247f JP |
2906 | } |
2907 | ||
5d1180fc | 2908 | if (tb[IFLA_TXQLEN]) { |
0cd29503 | 2909 | unsigned int value = nla_get_u32(tb[IFLA_TXQLEN]); |
6a643ddb CW |
2910 | |
2911 | err = dev_change_tx_queue_len(dev, value); | |
2912 | if (err) | |
2913 | goto errout; | |
2914 | status |= DO_SETLINK_MODIFIED; | |
5d1180fc | 2915 | } |
b00055aa | 2916 | |
46e6b992 SH |
2917 | if (tb[IFLA_GSO_MAX_SIZE]) { |
2918 | u32 max_size = nla_get_u32(tb[IFLA_GSO_MAX_SIZE]); | |
2919 | ||
46e6b992 SH |
2920 | if (dev->gso_max_size ^ max_size) { |
2921 | netif_set_gso_max_size(dev, max_size); | |
2922 | status |= DO_SETLINK_MODIFIED; | |
2923 | } | |
2924 | } | |
2925 | ||
2926 | if (tb[IFLA_GSO_MAX_SEGS]) { | |
2927 | u32 max_segs = nla_get_u32(tb[IFLA_GSO_MAX_SEGS]); | |
2928 | ||
46e6b992 | 2929 | if (dev->gso_max_segs ^ max_segs) { |
6d872df3 | 2930 | netif_set_gso_max_segs(dev, max_segs); |
46e6b992 SH |
2931 | status |= DO_SETLINK_MODIFIED; |
2932 | } | |
2933 | } | |
2934 | ||
eac1b93c CL |
2935 | if (tb[IFLA_GRO_MAX_SIZE]) { |
2936 | u32 gro_max_size = nla_get_u32(tb[IFLA_GRO_MAX_SIZE]); | |
2937 | ||
2938 | if (dev->gro_max_size ^ gro_max_size) { | |
2939 | netif_set_gro_max_size(dev, gro_max_size); | |
2940 | status |= DO_SETLINK_MODIFIED; | |
2941 | } | |
2942 | } | |
2943 | ||
9eefedd5 XL |
2944 | if (tb[IFLA_GSO_IPV4_MAX_SIZE]) { |
2945 | u32 max_size = nla_get_u32(tb[IFLA_GSO_IPV4_MAX_SIZE]); | |
2946 | ||
9eefedd5 XL |
2947 | if (dev->gso_ipv4_max_size ^ max_size) { |
2948 | netif_set_gso_ipv4_max_size(dev, max_size); | |
2949 | status |= DO_SETLINK_MODIFIED; | |
2950 | } | |
2951 | } | |
2952 | ||
2953 | if (tb[IFLA_GRO_IPV4_MAX_SIZE]) { | |
2954 | u32 gro_max_size = nla_get_u32(tb[IFLA_GRO_IPV4_MAX_SIZE]); | |
2955 | ||
2956 | if (dev->gro_ipv4_max_size ^ gro_max_size) { | |
2957 | netif_set_gro_ipv4_max_size(dev, gro_max_size); | |
2958 | status |= DO_SETLINK_MODIFIED; | |
2959 | } | |
2960 | } | |
2961 | ||
da5e0494 | 2962 | if (tb[IFLA_OPERSTATE]) |
93b2d4a2 | 2963 | set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE])); |
b00055aa | 2964 | |
da5e0494 | 2965 | if (tb[IFLA_LINKMODE]) { |
1889b0e7 ND |
2966 | unsigned char value = nla_get_u8(tb[IFLA_LINKMODE]); |
2967 | ||
1889b0e7 | 2968 | if (dev->link_mode ^ value) |
ba998906 | 2969 | status |= DO_SETLINK_NOTIFY; |
a6473fe9 | 2970 | WRITE_ONCE(dev->link_mode, value); |
b00055aa SR |
2971 | } |
2972 | ||
c02db8c6 | 2973 | if (tb[IFLA_VFINFO_LIST]) { |
4f7d2cdf | 2974 | struct nlattr *vfinfo[IFLA_VF_MAX + 1]; |
c02db8c6 CW |
2975 | struct nlattr *attr; |
2976 | int rem; | |
4f7d2cdf | 2977 | |
c02db8c6 | 2978 | nla_for_each_nested(attr, tb[IFLA_VFINFO_LIST], rem) { |
4f7d2cdf DB |
2979 | if (nla_type(attr) != IFLA_VF_INFO || |
2980 | nla_len(attr) < NLA_HDRLEN) { | |
253683bb | 2981 | err = -EINVAL; |
c02db8c6 | 2982 | goto errout; |
253683bb | 2983 | } |
8cb08174 JB |
2984 | err = nla_parse_nested_deprecated(vfinfo, IFLA_VF_MAX, |
2985 | attr, | |
2986 | ifla_vf_policy, | |
2987 | NULL); | |
4f7d2cdf DB |
2988 | if (err < 0) |
2989 | goto errout; | |
2990 | err = do_setvfinfo(dev, vfinfo); | |
c02db8c6 CW |
2991 | if (err < 0) |
2992 | goto errout; | |
ba998906 | 2993 | status |= DO_SETLINK_NOTIFY; |
c02db8c6 | 2994 | } |
ebc08a6f | 2995 | } |
1da177e4 LT |
2996 | err = 0; |
2997 | ||
57b61080 SF |
2998 | if (tb[IFLA_VF_PORTS]) { |
2999 | struct nlattr *port[IFLA_PORT_MAX+1]; | |
3000 | struct nlattr *attr; | |
3001 | int vf; | |
3002 | int rem; | |
3003 | ||
3004 | err = -EOPNOTSUPP; | |
3005 | if (!ops->ndo_set_vf_port) | |
3006 | goto errout; | |
3007 | ||
3008 | nla_for_each_nested(attr, tb[IFLA_VF_PORTS], rem) { | |
035d210f DB |
3009 | if (nla_type(attr) != IFLA_VF_PORT || |
3010 | nla_len(attr) < NLA_HDRLEN) { | |
3011 | err = -EINVAL; | |
3012 | goto errout; | |
3013 | } | |
8cb08174 JB |
3014 | err = nla_parse_nested_deprecated(port, IFLA_PORT_MAX, |
3015 | attr, | |
3016 | ifla_port_policy, | |
3017 | NULL); | |
57b61080 SF |
3018 | if (err < 0) |
3019 | goto errout; | |
3020 | if (!port[IFLA_PORT_VF]) { | |
3021 | err = -EOPNOTSUPP; | |
3022 | goto errout; | |
3023 | } | |
3024 | vf = nla_get_u32(port[IFLA_PORT_VF]); | |
3025 | err = ops->ndo_set_vf_port(dev, vf, port); | |
3026 | if (err < 0) | |
3027 | goto errout; | |
ba998906 | 3028 | status |= DO_SETLINK_NOTIFY; |
57b61080 SF |
3029 | } |
3030 | } | |
3031 | err = 0; | |
3032 | ||
3033 | if (tb[IFLA_PORT_SELF]) { | |
3034 | struct nlattr *port[IFLA_PORT_MAX+1]; | |
3035 | ||
8cb08174 JB |
3036 | err = nla_parse_nested_deprecated(port, IFLA_PORT_MAX, |
3037 | tb[IFLA_PORT_SELF], | |
3038 | ifla_port_policy, NULL); | |
57b61080 SF |
3039 | if (err < 0) |
3040 | goto errout; | |
3041 | ||
3042 | err = -EOPNOTSUPP; | |
3043 | if (ops->ndo_set_vf_port) | |
3044 | err = ops->ndo_set_vf_port(dev, PORT_SELF_VF, port); | |
3045 | if (err < 0) | |
3046 | goto errout; | |
ba998906 | 3047 | status |= DO_SETLINK_NOTIFY; |
57b61080 | 3048 | } |
f8ff182c TG |
3049 | |
3050 | if (tb[IFLA_AF_SPEC]) { | |
3051 | struct nlattr *af; | |
3052 | int rem; | |
3053 | ||
3054 | nla_for_each_nested(af, tb[IFLA_AF_SPEC], rem) { | |
3055 | const struct rtnl_af_ops *af_ops; | |
3056 | ||
058c8d59 | 3057 | BUG_ON(!(af_ops = rtnl_af_lookup(nla_type(af)))); |
f8ff182c | 3058 | |
3583a4e8 | 3059 | err = af_ops->set_link_af(dev, af, extack); |
a100243d | 3060 | if (err < 0) |
f8ff182c TG |
3061 | goto errout; |
3062 | ||
ba998906 | 3063 | status |= DO_SETLINK_NOTIFY; |
f8ff182c TG |
3064 | } |
3065 | } | |
57b61080 SF |
3066 | err = 0; |
3067 | ||
829eb208 RP |
3068 | if (tb[IFLA_PROTO_DOWN] || tb[IFLA_PROTO_DOWN_REASON]) { |
3069 | err = do_set_proto_down(dev, tb[IFLA_PROTO_DOWN], | |
3070 | tb[IFLA_PROTO_DOWN_REASON], extack); | |
88d6378b AK |
3071 | if (err) |
3072 | goto errout; | |
3073 | status |= DO_SETLINK_NOTIFY; | |
3074 | } | |
3075 | ||
d1fdd913 BB |
3076 | if (tb[IFLA_XDP]) { |
3077 | struct nlattr *xdp[IFLA_XDP_MAX + 1]; | |
85de8576 | 3078 | u32 xdp_flags = 0; |
d1fdd913 | 3079 | |
8cb08174 JB |
3080 | err = nla_parse_nested_deprecated(xdp, IFLA_XDP_MAX, |
3081 | tb[IFLA_XDP], | |
3082 | ifla_xdp_policy, NULL); | |
d1fdd913 BB |
3083 | if (err < 0) |
3084 | goto errout; | |
3085 | ||
58038695 | 3086 | if (xdp[IFLA_XDP_ATTACHED] || xdp[IFLA_XDP_PROG_ID]) { |
262d8625 BB |
3087 | err = -EINVAL; |
3088 | goto errout; | |
3089 | } | |
85de8576 DB |
3090 | |
3091 | if (xdp[IFLA_XDP_FLAGS]) { | |
3092 | xdp_flags = nla_get_u32(xdp[IFLA_XDP_FLAGS]); | |
3093 | if (xdp_flags & ~XDP_FLAGS_MASK) { | |
3094 | err = -EINVAL; | |
3095 | goto errout; | |
3096 | } | |
ee5d032f | 3097 | if (hweight32(xdp_flags & XDP_FLAGS_MODES) > 1) { |
0489df9a DB |
3098 | err = -EINVAL; |
3099 | goto errout; | |
3100 | } | |
85de8576 DB |
3101 | } |
3102 | ||
d1fdd913 | 3103 | if (xdp[IFLA_XDP_FD]) { |
92234c8f THJ |
3104 | int expected_fd = -1; |
3105 | ||
3106 | if (xdp_flags & XDP_FLAGS_REPLACE) { | |
3107 | if (!xdp[IFLA_XDP_EXPECTED_FD]) { | |
3108 | err = -EINVAL; | |
3109 | goto errout; | |
3110 | } | |
3111 | expected_fd = | |
3112 | nla_get_s32(xdp[IFLA_XDP_EXPECTED_FD]); | |
3113 | } | |
3114 | ||
ddf9f970 | 3115 | err = dev_change_xdp_fd(dev, extack, |
85de8576 | 3116 | nla_get_s32(xdp[IFLA_XDP_FD]), |
92234c8f | 3117 | expected_fd, |
85de8576 | 3118 | xdp_flags); |
d1fdd913 BB |
3119 | if (err) |
3120 | goto errout; | |
3121 | status |= DO_SETLINK_NOTIFY; | |
3122 | } | |
3123 | } | |
3124 | ||
0157f60c | 3125 | errout: |
ba998906 | 3126 | if (status & DO_SETLINK_MODIFIED) { |
64ff90cc | 3127 | if ((status & DO_SETLINK_NOTIFY) == DO_SETLINK_NOTIFY) |
ba998906 ND |
3128 | netdev_state_change(dev); |
3129 | ||
3130 | if (err < 0) | |
3131 | 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", | |
3132 | dev->name); | |
3133 | } | |
da5e0494 | 3134 | |
0157f60c PM |
3135 | return err; |
3136 | } | |
1da177e4 | 3137 | |
cc6090e9 | 3138 | static struct net_device *rtnl_dev_get(struct net *net, |
5ea08b52 FF |
3139 | struct nlattr *tb[]) |
3140 | { | |
3141 | char ifname[ALTIFNAMSIZ]; | |
3142 | ||
3143 | if (tb[IFLA_IFNAME]) | |
3144 | nla_strscpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
3145 | else if (tb[IFLA_ALT_IFNAME]) | |
3146 | nla_strscpy(ifname, tb[IFLA_ALT_IFNAME], ALTIFNAMSIZ); | |
3147 | else | |
3148 | return NULL; | |
cc6090e9 JP |
3149 | |
3150 | return __dev_get_by_name(net, ifname); | |
3151 | } | |
3152 | ||
c21ef3e3 DA |
3153 | static int rtnl_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, |
3154 | struct netlink_ext_ack *extack) | |
0157f60c | 3155 | { |
3b1e0a65 | 3156 | struct net *net = sock_net(skb->sk); |
0157f60c PM |
3157 | struct ifinfomsg *ifm; |
3158 | struct net_device *dev; | |
3159 | int err; | |
3160 | struct nlattr *tb[IFLA_MAX+1]; | |
0157f60c | 3161 | |
8cb08174 JB |
3162 | err = nlmsg_parse_deprecated(nlh, sizeof(*ifm), tb, IFLA_MAX, |
3163 | ifla_policy, extack); | |
0157f60c PM |
3164 | if (err < 0) |
3165 | goto errout; | |
3166 | ||
4ff66cae CB |
3167 | err = rtnl_ensure_unique_netns(tb, extack, false); |
3168 | if (err < 0) | |
3169 | goto errout; | |
3170 | ||
0157f60c PM |
3171 | err = -EINVAL; |
3172 | ifm = nlmsg_data(nlh); | |
3173 | if (ifm->ifi_index > 0) | |
a3d12891 | 3174 | dev = __dev_get_by_index(net, ifm->ifi_index); |
76c9ac0e | 3175 | else if (tb[IFLA_IFNAME] || tb[IFLA_ALT_IFNAME]) |
5ea08b52 | 3176 | dev = rtnl_dev_get(net, tb); |
0157f60c PM |
3177 | else |
3178 | goto errout; | |
3179 | ||
3180 | if (dev == NULL) { | |
3181 | err = -ENODEV; | |
3182 | goto errout; | |
3183 | } | |
3184 | ||
89da780a XL |
3185 | err = validate_linkmsg(dev, tb, extack); |
3186 | if (err < 0) | |
3187 | goto errout; | |
3188 | ||
5ea08b52 | 3189 | err = do_setlink(skb, dev, ifm, extack, tb, 0); |
da5e0494 | 3190 | errout: |
1da177e4 LT |
3191 | return err; |
3192 | } | |
3193 | ||
66400d54 WC |
3194 | static int rtnl_group_dellink(const struct net *net, int group) |
3195 | { | |
3196 | struct net_device *dev, *aux; | |
3197 | LIST_HEAD(list_kill); | |
3198 | bool found = false; | |
3199 | ||
3200 | if (!group) | |
3201 | return -EPERM; | |
3202 | ||
3203 | for_each_netdev(net, dev) { | |
3204 | if (dev->group == group) { | |
3205 | const struct rtnl_link_ops *ops; | |
3206 | ||
3207 | found = true; | |
3208 | ops = dev->rtnl_link_ops; | |
3209 | if (!ops || !ops->dellink) | |
3210 | return -EOPNOTSUPP; | |
3211 | } | |
3212 | } | |
3213 | ||
3214 | if (!found) | |
3215 | return -ENODEV; | |
3216 | ||
3217 | for_each_netdev_safe(net, dev, aux) { | |
3218 | if (dev->group == group) { | |
3219 | const struct rtnl_link_ops *ops; | |
3220 | ||
3221 | ops = dev->rtnl_link_ops; | |
3222 | ops->dellink(dev, &list_kill); | |
3223 | } | |
3224 | } | |
3225 | unregister_netdevice_many(&list_kill); | |
3226 | ||
3227 | return 0; | |
3228 | } | |
3229 | ||
f3a63cce | 3230 | int rtnl_delete_link(struct net_device *dev, u32 portid, const struct nlmsghdr *nlh) |
614732ea TG |
3231 | { |
3232 | const struct rtnl_link_ops *ops; | |
3233 | LIST_HEAD(list_kill); | |
3234 | ||
3235 | ops = dev->rtnl_link_ops; | |
3236 | if (!ops || !ops->dellink) | |
3237 | return -EOPNOTSUPP; | |
3238 | ||
3239 | ops->dellink(dev, &list_kill); | |
f3a63cce | 3240 | unregister_netdevice_many_notify(&list_kill, portid, nlh); |
614732ea TG |
3241 | |
3242 | return 0; | |
3243 | } | |
3244 | EXPORT_SYMBOL_GPL(rtnl_delete_link); | |
3245 | ||
c21ef3e3 DA |
3246 | static int rtnl_dellink(struct sk_buff *skb, struct nlmsghdr *nlh, |
3247 | struct netlink_ext_ack *extack) | |
38f7b870 | 3248 | { |
3b1e0a65 | 3249 | struct net *net = sock_net(skb->sk); |
f3a63cce | 3250 | u32 portid = NETLINK_CB(skb).portid; |
b61ad68a CB |
3251 | struct net *tgt_net = net; |
3252 | struct net_device *dev = NULL; | |
38f7b870 | 3253 | struct ifinfomsg *ifm; |
38f7b870 PM |
3254 | struct nlattr *tb[IFLA_MAX+1]; |
3255 | int err; | |
b61ad68a | 3256 | int netnsid = -1; |
38f7b870 | 3257 | |
8cb08174 JB |
3258 | err = nlmsg_parse_deprecated(nlh, sizeof(*ifm), tb, IFLA_MAX, |
3259 | ifla_policy, extack); | |
38f7b870 PM |
3260 | if (err < 0) |
3261 | return err; | |
3262 | ||
4ff66cae CB |
3263 | err = rtnl_ensure_unique_netns(tb, extack, true); |
3264 | if (err < 0) | |
3265 | return err; | |
3266 | ||
7e4a8d5a CB |
3267 | if (tb[IFLA_TARGET_NETNSID]) { |
3268 | netnsid = nla_get_s32(tb[IFLA_TARGET_NETNSID]); | |
c383edc4 | 3269 | tgt_net = rtnl_get_net_ns_capable(NETLINK_CB(skb).sk, netnsid); |
b61ad68a CB |
3270 | if (IS_ERR(tgt_net)) |
3271 | return PTR_ERR(tgt_net); | |
3272 | } | |
3273 | ||
3274 | err = -EINVAL; | |
38f7b870 PM |
3275 | ifm = nlmsg_data(nlh); |
3276 | if (ifm->ifi_index > 0) | |
b61ad68a | 3277 | dev = __dev_get_by_index(tgt_net, ifm->ifi_index); |
76c9ac0e | 3278 | else if (tb[IFLA_IFNAME] || tb[IFLA_ALT_IFNAME]) |
5ea08b52 | 3279 | dev = rtnl_dev_get(net, tb); |
66400d54 | 3280 | else if (tb[IFLA_GROUP]) |
b61ad68a | 3281 | err = rtnl_group_dellink(tgt_net, nla_get_u32(tb[IFLA_GROUP])); |
38f7b870 | 3282 | else |
b61ad68a | 3283 | goto out; |
38f7b870 | 3284 | |
b61ad68a | 3285 | if (!dev) { |
dee04163 | 3286 | if (tb[IFLA_IFNAME] || tb[IFLA_ALT_IFNAME] || ifm->ifi_index > 0) |
b61ad68a CB |
3287 | err = -ENODEV; |
3288 | ||
3289 | goto out; | |
3290 | } | |
3291 | ||
f3a63cce | 3292 | err = rtnl_delete_link(dev, portid, nlh); |
38f7b870 | 3293 | |
b61ad68a CB |
3294 | out: |
3295 | if (netnsid >= 0) | |
3296 | put_net(tgt_net); | |
3297 | ||
3298 | return err; | |
38f7b870 PM |
3299 | } |
3300 | ||
1d997f10 HL |
3301 | int rtnl_configure_link(struct net_device *dev, const struct ifinfomsg *ifm, |
3302 | u32 portid, const struct nlmsghdr *nlh) | |
3729d502 PM |
3303 | { |
3304 | unsigned int old_flags; | |
3305 | int err; | |
3306 | ||
3307 | old_flags = dev->flags; | |
3308 | if (ifm && (ifm->ifi_flags || ifm->ifi_change)) { | |
6d040321 PM |
3309 | err = __dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm), |
3310 | NULL); | |
3729d502 PM |
3311 | if (err < 0) |
3312 | return err; | |
3313 | } | |
3314 | ||
8d356b89 | 3315 | if (dev->rtnl_link_state == RTNL_LINK_INITIALIZED) { |
1d997f10 | 3316 | __dev_notify_flags(dev, old_flags, (old_flags ^ dev->flags), portid, nlh); |
8d356b89 RP |
3317 | } else { |
3318 | dev->rtnl_link_state = RTNL_LINK_INITIALIZED; | |
1d997f10 | 3319 | __dev_notify_flags(dev, old_flags, ~0U, portid, nlh); |
8d356b89 | 3320 | } |
3729d502 PM |
3321 | return 0; |
3322 | } | |
3323 | EXPORT_SYMBOL(rtnl_configure_link); | |
3324 | ||
d0522f1c DA |
3325 | struct net_device *rtnl_create_link(struct net *net, const char *ifname, |
3326 | unsigned char name_assign_type, | |
3327 | const struct rtnl_link_ops *ops, | |
3328 | struct nlattr *tb[], | |
3329 | struct netlink_ext_ack *extack) | |
e7199288 | 3330 | { |
e7199288 | 3331 | struct net_device *dev; |
d40156aa JP |
3332 | unsigned int num_tx_queues = 1; |
3333 | unsigned int num_rx_queues = 1; | |
b0ad3c17 | 3334 | int err; |
e7199288 | 3335 | |
76ff5cc9 JP |
3336 | if (tb[IFLA_NUM_TX_QUEUES]) |
3337 | num_tx_queues = nla_get_u32(tb[IFLA_NUM_TX_QUEUES]); | |
3338 | else if (ops->get_num_tx_queues) | |
d40156aa | 3339 | num_tx_queues = ops->get_num_tx_queues(); |
76ff5cc9 JP |
3340 | |
3341 | if (tb[IFLA_NUM_RX_QUEUES]) | |
3342 | num_rx_queues = nla_get_u32(tb[IFLA_NUM_RX_QUEUES]); | |
3343 | else if (ops->get_num_rx_queues) | |
d40156aa | 3344 | num_rx_queues = ops->get_num_rx_queues(); |
efacb309 | 3345 | |
d0522f1c DA |
3346 | if (num_tx_queues < 1 || num_tx_queues > 4096) { |
3347 | NL_SET_ERR_MSG(extack, "Invalid number of transmit queues"); | |
0e1d6eca | 3348 | return ERR_PTR(-EINVAL); |
d0522f1c | 3349 | } |
0e1d6eca | 3350 | |
d0522f1c DA |
3351 | if (num_rx_queues < 1 || num_rx_queues > 4096) { |
3352 | NL_SET_ERR_MSG(extack, "Invalid number of receive queues"); | |
0e1d6eca | 3353 | return ERR_PTR(-EINVAL); |
d0522f1c | 3354 | } |
0e1d6eca | 3355 | |
8c713dc9 JB |
3356 | if (ops->alloc) { |
3357 | dev = ops->alloc(tb, ifname, name_assign_type, | |
3358 | num_tx_queues, num_rx_queues); | |
3359 | if (IS_ERR(dev)) | |
3360 | return dev; | |
3361 | } else { | |
3362 | dev = alloc_netdev_mqs(ops->priv_size, ifname, | |
3363 | name_assign_type, ops->setup, | |
3364 | num_tx_queues, num_rx_queues); | |
3365 | } | |
3366 | ||
e7199288 | 3367 | if (!dev) |
d1892e4e | 3368 | return ERR_PTR(-ENOMEM); |
e7199288 | 3369 | |
b0ad3c17 XL |
3370 | err = validate_linkmsg(dev, tb, extack); |
3371 | if (err < 0) { | |
3372 | free_netdev(dev); | |
3373 | return ERR_PTR(err); | |
3374 | } | |
3375 | ||
81adee47 EB |
3376 | dev_net_set(dev, net); |
3377 | dev->rtnl_link_ops = ops; | |
3729d502 | 3378 | dev->rtnl_link_state = RTNL_LINK_INITIALIZING; |
81adee47 | 3379 | |
d836f5c6 ED |
3380 | if (tb[IFLA_MTU]) { |
3381 | u32 mtu = nla_get_u32(tb[IFLA_MTU]); | |
d836f5c6 ED |
3382 | |
3383 | err = dev_validate_mtu(dev, mtu, extack); | |
3384 | if (err) { | |
3385 | free_netdev(dev); | |
3386 | return ERR_PTR(err); | |
3387 | } | |
3388 | dev->mtu = mtu; | |
3389 | } | |
2afb9b53 | 3390 | if (tb[IFLA_ADDRESS]) { |
efd38f75 JK |
3391 | __dev_addr_set(dev, nla_data(tb[IFLA_ADDRESS]), |
3392 | nla_len(tb[IFLA_ADDRESS])); | |
2afb9b53 JP |
3393 | dev->addr_assign_type = NET_ADDR_SET; |
3394 | } | |
e7199288 PE |
3395 | if (tb[IFLA_BROADCAST]) |
3396 | memcpy(dev->broadcast, nla_data(tb[IFLA_BROADCAST]), | |
3397 | nla_len(tb[IFLA_BROADCAST])); | |
3398 | if (tb[IFLA_TXQLEN]) | |
3399 | dev->tx_queue_len = nla_get_u32(tb[IFLA_TXQLEN]); | |
3400 | if (tb[IFLA_OPERSTATE]) | |
93b2d4a2 | 3401 | set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE])); |
e7199288 PE |
3402 | if (tb[IFLA_LINKMODE]) |
3403 | dev->link_mode = nla_get_u8(tb[IFLA_LINKMODE]); | |
ffa934f1 PM |
3404 | if (tb[IFLA_GROUP]) |
3405 | dev_set_group(dev, nla_get_u32(tb[IFLA_GROUP])); | |
46e6b992 SH |
3406 | if (tb[IFLA_GSO_MAX_SIZE]) |
3407 | netif_set_gso_max_size(dev, nla_get_u32(tb[IFLA_GSO_MAX_SIZE])); | |
3408 | if (tb[IFLA_GSO_MAX_SEGS]) | |
6d872df3 | 3409 | netif_set_gso_max_segs(dev, nla_get_u32(tb[IFLA_GSO_MAX_SEGS])); |
eac1b93c CL |
3410 | if (tb[IFLA_GRO_MAX_SIZE]) |
3411 | netif_set_gro_max_size(dev, nla_get_u32(tb[IFLA_GRO_MAX_SIZE])); | |
9eefedd5 XL |
3412 | if (tb[IFLA_GSO_IPV4_MAX_SIZE]) |
3413 | netif_set_gso_ipv4_max_size(dev, nla_get_u32(tb[IFLA_GSO_IPV4_MAX_SIZE])); | |
3414 | if (tb[IFLA_GRO_IPV4_MAX_SIZE]) | |
3415 | netif_set_gro_ipv4_max_size(dev, nla_get_u32(tb[IFLA_GRO_IPV4_MAX_SIZE])); | |
e7199288 PE |
3416 | |
3417 | return dev; | |
e7199288 | 3418 | } |
e0d087af | 3419 | EXPORT_SYMBOL(rtnl_create_link); |
e7199288 | 3420 | |
90f62cf3 EB |
3421 | static int rtnl_group_changelink(const struct sk_buff *skb, |
3422 | struct net *net, int group, | |
e7ed828f | 3423 | struct ifinfomsg *ifm, |
ddf9f970 | 3424 | struct netlink_ext_ack *extack, |
e7ed828f VD |
3425 | struct nlattr **tb) |
3426 | { | |
d079535d | 3427 | struct net_device *dev, *aux; |
e7ed828f VD |
3428 | int err; |
3429 | ||
d079535d | 3430 | for_each_netdev_safe(net, dev, aux) { |
e7ed828f | 3431 | if (dev->group == group) { |
89da780a XL |
3432 | err = validate_linkmsg(dev, tb, extack); |
3433 | if (err < 0) | |
3434 | return err; | |
5ea08b52 | 3435 | err = do_setlink(skb, dev, ifm, extack, tb, 0); |
e7ed828f VD |
3436 | if (err < 0) |
3437 | return err; | |
3438 | } | |
3439 | } | |
3440 | ||
3441 | return 0; | |
3442 | } | |
3443 | ||
63105e83 JK |
3444 | static int rtnl_newlink_create(struct sk_buff *skb, struct ifinfomsg *ifm, |
3445 | const struct rtnl_link_ops *ops, | |
d88e136c | 3446 | const struct nlmsghdr *nlh, |
63105e83 | 3447 | struct nlattr **tb, struct nlattr **data, |
02839cc8 JK |
3448 | struct netlink_ext_ack *extack) |
3449 | { | |
3450 | unsigned char name_assign_type = NET_NAME_USER; | |
3451 | struct net *net = sock_net(skb->sk); | |
d88e136c | 3452 | u32 portid = NETLINK_CB(skb).portid; |
02839cc8 JK |
3453 | struct net *dest_net, *link_net; |
3454 | struct net_device *dev; | |
3455 | char ifname[IFNAMSIZ]; | |
3456 | int err; | |
3457 | ||
3458 | if (!ops->alloc && !ops->setup) | |
3459 | return -EOPNOTSUPP; | |
3460 | ||
3461 | if (tb[IFLA_IFNAME]) { | |
3462 | nla_strscpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
3463 | } else { | |
3464 | snprintf(ifname, IFNAMSIZ, "%s%%d", ops->kind); | |
3465 | name_assign_type = NET_NAME_ENUM; | |
3466 | } | |
3467 | ||
3468 | dest_net = rtnl_link_get_net_capable(skb, net, tb, CAP_NET_ADMIN); | |
3469 | if (IS_ERR(dest_net)) | |
3470 | return PTR_ERR(dest_net); | |
3471 | ||
3472 | if (tb[IFLA_LINK_NETNSID]) { | |
3473 | int id = nla_get_s32(tb[IFLA_LINK_NETNSID]); | |
3474 | ||
3475 | link_net = get_net_ns_by_id(dest_net, id); | |
3476 | if (!link_net) { | |
3477 | NL_SET_ERR_MSG(extack, "Unknown network namespace id"); | |
3478 | err = -EINVAL; | |
3479 | goto out; | |
3480 | } | |
3481 | err = -EPERM; | |
3482 | if (!netlink_ns_capable(skb, link_net->user_ns, CAP_NET_ADMIN)) | |
3483 | goto out; | |
3484 | } else { | |
3485 | link_net = NULL; | |
3486 | } | |
3487 | ||
3488 | dev = rtnl_create_link(link_net ? : dest_net, ifname, | |
3489 | name_assign_type, ops, tb, extack); | |
3490 | if (IS_ERR(dev)) { | |
3491 | err = PTR_ERR(dev); | |
3492 | goto out; | |
3493 | } | |
3494 | ||
3495 | dev->ifindex = ifm->ifi_index; | |
3496 | ||
3497 | if (ops->newlink) | |
3498 | err = ops->newlink(link_net ? : net, dev, tb, data, extack); | |
3499 | else | |
3500 | err = register_netdevice(dev); | |
3501 | if (err < 0) { | |
3502 | free_netdev(dev); | |
3503 | goto out; | |
3504 | } | |
3505 | ||
d88e136c | 3506 | err = rtnl_configure_link(dev, ifm, portid, nlh); |
02839cc8 JK |
3507 | if (err < 0) |
3508 | goto out_unregister; | |
3509 | if (link_net) { | |
3510 | err = dev_change_net_namespace(dev, dest_net, ifname); | |
3511 | if (err < 0) | |
3512 | goto out_unregister; | |
3513 | } | |
3514 | if (tb[IFLA_MASTER]) { | |
3515 | err = do_set_master(dev, nla_get_u32(tb[IFLA_MASTER]), extack); | |
3516 | if (err) | |
3517 | goto out_unregister; | |
3518 | } | |
3519 | out: | |
3520 | if (link_net) | |
3521 | put_net(link_net); | |
3522 | put_net(dest_net); | |
3523 | return err; | |
3524 | out_unregister: | |
3525 | if (ops->newlink) { | |
3526 | LIST_HEAD(list_kill); | |
3527 | ||
3528 | ops->dellink(dev, &list_kill); | |
3529 | unregister_netdevice_many(&list_kill); | |
3530 | } else { | |
3531 | unregister_netdevice(dev); | |
3532 | } | |
3533 | goto out; | |
3534 | } | |
63105e83 | 3535 | |
c92bf26c JK |
3536 | struct rtnl_newlink_tbs { |
3537 | struct nlattr *tb[IFLA_MAX + 1]; | |
3538 | struct nlattr *attr[RTNL_MAX_TYPE + 1]; | |
3539 | struct nlattr *slave_attr[RTNL_SLAVE_MAX_TYPE + 1]; | |
3540 | }; | |
3541 | ||
a2939745 | 3542 | static int __rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh, |
c92bf26c JK |
3543 | struct rtnl_newlink_tbs *tbs, |
3544 | struct netlink_ext_ack *extack) | |
38f7b870 | 3545 | { |
420d0318 | 3546 | struct nlattr *linkinfo[IFLA_INFO_MAX + 1]; |
c92bf26c | 3547 | struct nlattr ** const tb = tbs->tb; |
c6f6f244 ED |
3548 | const struct rtnl_link_ops *m_ops; |
3549 | struct net_device *master_dev; | |
3b1e0a65 | 3550 | struct net *net = sock_net(skb->sk); |
38f7b870 | 3551 | const struct rtnl_link_ops *ops; |
420d0318 JK |
3552 | struct nlattr **slave_data; |
3553 | char kind[MODULE_NAME_LEN]; | |
38f7b870 PM |
3554 | struct net_device *dev; |
3555 | struct ifinfomsg *ifm; | |
420d0318 | 3556 | struct nlattr **data; |
ef2a7c90 | 3557 | bool link_specified; |
38f7b870 PM |
3558 | int err; |
3559 | ||
95a5afca | 3560 | #ifdef CONFIG_MODULES |
38f7b870 | 3561 | replay: |
8072f085 | 3562 | #endif |
8cb08174 JB |
3563 | err = nlmsg_parse_deprecated(nlh, sizeof(*ifm), tb, IFLA_MAX, |
3564 | ifla_policy, extack); | |
38f7b870 PM |
3565 | if (err < 0) |
3566 | return err; | |
3567 | ||
4ff66cae CB |
3568 | err = rtnl_ensure_unique_netns(tb, extack, false); |
3569 | if (err < 0) | |
3570 | return err; | |
3571 | ||
38f7b870 | 3572 | ifm = nlmsg_data(nlh); |
ef2a7c90 FF |
3573 | if (ifm->ifi_index > 0) { |
3574 | link_specified = true; | |
881d966b | 3575 | dev = __dev_get_by_index(net, ifm->ifi_index); |
30188bd7 IS |
3576 | } else if (ifm->ifi_index < 0) { |
3577 | NL_SET_ERR_MSG(extack, "ifindex can't be negative"); | |
3578 | return -EINVAL; | |
ef2a7c90 FF |
3579 | } else if (tb[IFLA_IFNAME] || tb[IFLA_ALT_IFNAME]) { |
3580 | link_specified = true; | |
5ea08b52 | 3581 | dev = rtnl_dev_get(net, tb); |
ef2a7c90 FF |
3582 | } else { |
3583 | link_specified = false; | |
7af12cba | 3584 | dev = NULL; |
ef2a7c90 | 3585 | } |
38f7b870 | 3586 | |
c6f6f244 ED |
3587 | master_dev = NULL; |
3588 | m_ops = NULL; | |
ba7d49b1 JP |
3589 | if (dev) { |
3590 | master_dev = netdev_master_upper_dev_get(dev); | |
3591 | if (master_dev) | |
3592 | m_ops = master_dev->rtnl_link_ops; | |
3593 | } | |
3594 | ||
38f7b870 | 3595 | if (tb[IFLA_LINKINFO]) { |
8cb08174 JB |
3596 | err = nla_parse_nested_deprecated(linkinfo, IFLA_INFO_MAX, |
3597 | tb[IFLA_LINKINFO], | |
3598 | ifla_info_policy, NULL); | |
38f7b870 PM |
3599 | if (err < 0) |
3600 | return err; | |
3601 | } else | |
3602 | memset(linkinfo, 0, sizeof(linkinfo)); | |
3603 | ||
3604 | if (linkinfo[IFLA_INFO_KIND]) { | |
872f6903 | 3605 | nla_strscpy(kind, linkinfo[IFLA_INFO_KIND], sizeof(kind)); |
38f7b870 PM |
3606 | ops = rtnl_link_ops_get(kind); |
3607 | } else { | |
3608 | kind[0] = '\0'; | |
3609 | ops = NULL; | |
3610 | } | |
3611 | ||
420d0318 JK |
3612 | data = NULL; |
3613 | if (ops) { | |
3614 | if (ops->maxtype > RTNL_MAX_TYPE) | |
3615 | return -EINVAL; | |
ccf8dbcd | 3616 | |
420d0318 | 3617 | if (ops->maxtype && linkinfo[IFLA_INFO_DATA]) { |
c92bf26c | 3618 | err = nla_parse_nested_deprecated(tbs->attr, ops->maxtype, |
8cb08174 JB |
3619 | linkinfo[IFLA_INFO_DATA], |
3620 | ops->policy, extack); | |
420d0318 JK |
3621 | if (err < 0) |
3622 | return err; | |
c92bf26c | 3623 | data = tbs->attr; |
38f7b870 | 3624 | } |
420d0318 JK |
3625 | if (ops->validate) { |
3626 | err = ops->validate(tb, data, extack); | |
3627 | if (err < 0) | |
3628 | return err; | |
3629 | } | |
3630 | } | |
38f7b870 | 3631 | |
420d0318 JK |
3632 | slave_data = NULL; |
3633 | if (m_ops) { | |
3634 | if (m_ops->slave_maxtype > RTNL_SLAVE_MAX_TYPE) | |
3635 | return -EINVAL; | |
ccf8dbcd | 3636 | |
420d0318 JK |
3637 | if (m_ops->slave_maxtype && |
3638 | linkinfo[IFLA_INFO_SLAVE_DATA]) { | |
c92bf26c | 3639 | err = nla_parse_nested_deprecated(tbs->slave_attr, |
8cb08174 JB |
3640 | m_ops->slave_maxtype, |
3641 | linkinfo[IFLA_INFO_SLAVE_DATA], | |
3642 | m_ops->slave_policy, | |
3643 | extack); | |
420d0318 JK |
3644 | if (err < 0) |
3645 | return err; | |
c92bf26c | 3646 | slave_data = tbs->slave_attr; |
ba7d49b1 | 3647 | } |
420d0318 | 3648 | } |
ba7d49b1 | 3649 | |
420d0318 JK |
3650 | if (dev) { |
3651 | int status = 0; | |
38f7b870 | 3652 | |
420d0318 JK |
3653 | if (nlh->nlmsg_flags & NLM_F_EXCL) |
3654 | return -EEXIST; | |
3655 | if (nlh->nlmsg_flags & NLM_F_REPLACE) | |
3656 | return -EOPNOTSUPP; | |
38f7b870 | 3657 | |
89da780a XL |
3658 | err = validate_linkmsg(dev, tb, extack); |
3659 | if (err < 0) | |
3660 | return err; | |
3661 | ||
420d0318 JK |
3662 | if (linkinfo[IFLA_INFO_DATA]) { |
3663 | if (!ops || ops != dev->rtnl_link_ops || | |
3664 | !ops->changelink) | |
3665 | return -EOPNOTSUPP; | |
38f7b870 | 3666 | |
420d0318 JK |
3667 | err = ops->changelink(dev, tb, data, extack); |
3668 | if (err < 0) | |
3669 | return err; | |
3670 | status |= DO_SETLINK_NOTIFY; | |
3671 | } | |
ba7d49b1 | 3672 | |
420d0318 JK |
3673 | if (linkinfo[IFLA_INFO_SLAVE_DATA]) { |
3674 | if (!m_ops || !m_ops->slave_changelink) | |
3675 | return -EOPNOTSUPP; | |
ba7d49b1 | 3676 | |
420d0318 JK |
3677 | err = m_ops->slave_changelink(master_dev, dev, tb, |
3678 | slave_data, extack); | |
3679 | if (err < 0) | |
3680 | return err; | |
3681 | status |= DO_SETLINK_NOTIFY; | |
38f7b870 PM |
3682 | } |
3683 | ||
5ea08b52 | 3684 | return do_setlink(skb, dev, ifm, extack, tb, status); |
420d0318 JK |
3685 | } |
3686 | ||
3687 | if (!(nlh->nlmsg_flags & NLM_F_CREATE)) { | |
ef2a7c90 FF |
3688 | /* No dev found and NLM_F_CREATE not set. Requested dev does not exist, |
3689 | * or it's for a group | |
3690 | */ | |
3691 | if (link_specified) | |
3692 | return -ENODEV; | |
3693 | if (tb[IFLA_GROUP]) | |
420d0318 | 3694 | return rtnl_group_changelink(skb, net, |
ffa934f1 | 3695 | nla_get_u32(tb[IFLA_GROUP]), |
ddf9f970 | 3696 | ifm, extack, tb); |
6f37c9f9 | 3697 | return -ENODEV; |
420d0318 | 3698 | } |
38f7b870 | 3699 | |
420d0318 JK |
3700 | if (tb[IFLA_MAP] || tb[IFLA_PROTINFO]) |
3701 | return -EOPNOTSUPP; | |
38f7b870 | 3702 | |
420d0318 | 3703 | if (!ops) { |
95a5afca | 3704 | #ifdef CONFIG_MODULES |
420d0318 JK |
3705 | if (kind[0]) { |
3706 | __rtnl_unlock(); | |
3707 | request_module("rtnl-link-%s", kind); | |
3708 | rtnl_lock(); | |
3709 | ops = rtnl_link_ops_get(kind); | |
3710 | if (ops) | |
3711 | goto replay; | |
38f7b870 | 3712 | } |
420d0318 JK |
3713 | #endif |
3714 | NL_SET_ERR_MSG(extack, "Unknown device type"); | |
3715 | return -EOPNOTSUPP; | |
3716 | } | |
38f7b870 | 3717 | |
d88e136c | 3718 | return rtnl_newlink_create(skb, ifm, ops, nlh, tb, data, extack); |
63105e83 JK |
3719 | } |
3720 | ||
a2939745 JK |
3721 | static int rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh, |
3722 | struct netlink_ext_ack *extack) | |
3723 | { | |
c92bf26c | 3724 | struct rtnl_newlink_tbs *tbs; |
a2939745 JK |
3725 | int ret; |
3726 | ||
c92bf26c JK |
3727 | tbs = kmalloc(sizeof(*tbs), GFP_KERNEL); |
3728 | if (!tbs) | |
a2939745 JK |
3729 | return -ENOMEM; |
3730 | ||
c92bf26c JK |
3731 | ret = __rtnl_newlink(skb, nlh, tbs, extack); |
3732 | kfree(tbs); | |
a2939745 JK |
3733 | return ret; |
3734 | } | |
3735 | ||
9b3757b0 JK |
3736 | static int rtnl_valid_getlink_req(struct sk_buff *skb, |
3737 | const struct nlmsghdr *nlh, | |
3738 | struct nlattr **tb, | |
3739 | struct netlink_ext_ack *extack) | |
3740 | { | |
3741 | struct ifinfomsg *ifm; | |
3742 | int i, err; | |
3743 | ||
3744 | if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*ifm))) { | |
3745 | NL_SET_ERR_MSG(extack, "Invalid header for get link"); | |
3746 | return -EINVAL; | |
3747 | } | |
3748 | ||
3749 | if (!netlink_strict_get_check(skb)) | |
8cb08174 JB |
3750 | return nlmsg_parse_deprecated(nlh, sizeof(*ifm), tb, IFLA_MAX, |
3751 | ifla_policy, extack); | |
9b3757b0 JK |
3752 | |
3753 | ifm = nlmsg_data(nlh); | |
3754 | if (ifm->__ifi_pad || ifm->ifi_type || ifm->ifi_flags || | |
3755 | ifm->ifi_change) { | |
3756 | NL_SET_ERR_MSG(extack, "Invalid values in header for get link request"); | |
3757 | return -EINVAL; | |
3758 | } | |
3759 | ||
8cb08174 JB |
3760 | err = nlmsg_parse_deprecated_strict(nlh, sizeof(*ifm), tb, IFLA_MAX, |
3761 | ifla_policy, extack); | |
9b3757b0 JK |
3762 | if (err) |
3763 | return err; | |
3764 | ||
3765 | for (i = 0; i <= IFLA_MAX; i++) { | |
3766 | if (!tb[i]) | |
3767 | continue; | |
3768 | ||
3769 | switch (i) { | |
3770 | case IFLA_IFNAME: | |
76c9ac0e | 3771 | case IFLA_ALT_IFNAME: |
9b3757b0 JK |
3772 | case IFLA_EXT_MASK: |
3773 | case IFLA_TARGET_NETNSID: | |
3774 | break; | |
3775 | default: | |
3776 | NL_SET_ERR_MSG(extack, "Unsupported attribute in get link request"); | |
3777 | return -EINVAL; | |
3778 | } | |
3779 | } | |
3780 | ||
3781 | return 0; | |
3782 | } | |
3783 | ||
c21ef3e3 DA |
3784 | static int rtnl_getlink(struct sk_buff *skb, struct nlmsghdr *nlh, |
3785 | struct netlink_ext_ack *extack) | |
711e2c33 | 3786 | { |
3b1e0a65 | 3787 | struct net *net = sock_net(skb->sk); |
79e1ad14 | 3788 | struct net *tgt_net = net; |
b60c5115 TG |
3789 | struct ifinfomsg *ifm; |
3790 | struct nlattr *tb[IFLA_MAX+1]; | |
3791 | struct net_device *dev = NULL; | |
3792 | struct sk_buff *nskb; | |
79e1ad14 | 3793 | int netnsid = -1; |
339bf98f | 3794 | int err; |
115c9b81 | 3795 | u32 ext_filter_mask = 0; |
711e2c33 | 3796 | |
9b3757b0 | 3797 | err = rtnl_valid_getlink_req(skb, nlh, tb, extack); |
b60c5115 | 3798 | if (err < 0) |
9918f230 | 3799 | return err; |
b60c5115 | 3800 | |
4ff66cae CB |
3801 | err = rtnl_ensure_unique_netns(tb, extack, true); |
3802 | if (err < 0) | |
3803 | return err; | |
3804 | ||
7e4a8d5a CB |
3805 | if (tb[IFLA_TARGET_NETNSID]) { |
3806 | netnsid = nla_get_s32(tb[IFLA_TARGET_NETNSID]); | |
c383edc4 | 3807 | tgt_net = rtnl_get_net_ns_capable(NETLINK_CB(skb).sk, netnsid); |
79e1ad14 JB |
3808 | if (IS_ERR(tgt_net)) |
3809 | return PTR_ERR(tgt_net); | |
3810 | } | |
3811 | ||
115c9b81 GR |
3812 | if (tb[IFLA_EXT_MASK]) |
3813 | ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]); | |
3814 | ||
79e1ad14 | 3815 | err = -EINVAL; |
b60c5115 | 3816 | ifm = nlmsg_data(nlh); |
a3d12891 | 3817 | if (ifm->ifi_index > 0) |
79e1ad14 | 3818 | dev = __dev_get_by_index(tgt_net, ifm->ifi_index); |
76c9ac0e | 3819 | else if (tb[IFLA_IFNAME] || tb[IFLA_ALT_IFNAME]) |
5ea08b52 | 3820 | dev = rtnl_dev_get(tgt_net, tb); |
a3d12891 | 3821 | else |
79e1ad14 | 3822 | goto out; |
711e2c33 | 3823 | |
79e1ad14 | 3824 | err = -ENODEV; |
a3d12891 | 3825 | if (dev == NULL) |
79e1ad14 | 3826 | goto out; |
a3d12891 | 3827 | |
79e1ad14 | 3828 | err = -ENOBUFS; |
ac40916a | 3829 | nskb = nlmsg_new_large(if_nlmsg_size(dev, ext_filter_mask)); |
a3d12891 | 3830 | if (nskb == NULL) |
79e1ad14 | 3831 | goto out; |
b60c5115 | 3832 | |
facd15df JB |
3833 | /* Synchronize the carrier state so we don't report a state |
3834 | * that we're not actually going to honour immediately; if | |
3835 | * the driver just did a carrier off->on transition, we can | |
3836 | * only TX if link watch work has run, but without this we'd | |
3837 | * already report carrier on, even if it doesn't work yet. | |
3838 | */ | |
3839 | linkwatch_sync_dev(dev); | |
3840 | ||
79e1ad14 JB |
3841 | err = rtnl_fill_ifinfo(nskb, dev, net, |
3842 | RTM_NEWLINK, NETLINK_CB(skb).portid, | |
3843 | nlh->nlmsg_seq, 0, 0, ext_filter_mask, | |
d4e4fdf9 | 3844 | 0, NULL, 0, netnsid, GFP_KERNEL); |
26932566 PM |
3845 | if (err < 0) { |
3846 | /* -EMSGSIZE implies BUG in if_nlmsg_size */ | |
3847 | WARN_ON(err == -EMSGSIZE); | |
3848 | kfree_skb(nskb); | |
a3d12891 | 3849 | } else |
15e47304 | 3850 | err = rtnl_unicast(nskb, net, NETLINK_CB(skb).portid); |
79e1ad14 JB |
3851 | out: |
3852 | if (netnsid >= 0) | |
3853 | put_net(tgt_net); | |
711e2c33 | 3854 | |
b60c5115 | 3855 | return err; |
711e2c33 | 3856 | } |
711e2c33 | 3857 | |
36fbf1e5 JP |
3858 | static int rtnl_alt_ifname(int cmd, struct net_device *dev, struct nlattr *attr, |
3859 | bool *changed, struct netlink_ext_ack *extack) | |
3860 | { | |
3861 | char *alt_ifname; | |
155fb43b | 3862 | size_t size; |
36fbf1e5 JP |
3863 | int err; |
3864 | ||
3865 | err = nla_validate(attr, attr->nla_len, IFLA_MAX, ifla_policy, extack); | |
3866 | if (err) | |
3867 | return err; | |
3868 | ||
155fb43b JK |
3869 | if (cmd == RTM_NEWLINKPROP) { |
3870 | size = rtnl_prop_list_size(dev); | |
3871 | size += nla_total_size(ALTIFNAMSIZ); | |
3872 | if (size >= U16_MAX) { | |
3873 | NL_SET_ERR_MSG(extack, | |
3874 | "effective property list too long"); | |
3875 | return -EINVAL; | |
3876 | } | |
3877 | } | |
3878 | ||
5d26cff5 | 3879 | alt_ifname = nla_strdup(attr, GFP_KERNEL_ACCOUNT); |
44bfa9c5 ED |
3880 | if (!alt_ifname) |
3881 | return -ENOMEM; | |
3882 | ||
36fbf1e5 | 3883 | if (cmd == RTM_NEWLINKPROP) { |
36fbf1e5 | 3884 | err = netdev_name_node_alt_create(dev, alt_ifname); |
44bfa9c5 ED |
3885 | if (!err) |
3886 | alt_ifname = NULL; | |
36fbf1e5 JP |
3887 | } else if (cmd == RTM_DELLINKPROP) { |
3888 | err = netdev_name_node_alt_destroy(dev, alt_ifname); | |
36fbf1e5 | 3889 | } else { |
44bfa9c5 ED |
3890 | WARN_ON_ONCE(1); |
3891 | err = -EINVAL; | |
36fbf1e5 JP |
3892 | } |
3893 | ||
44bfa9c5 ED |
3894 | kfree(alt_ifname); |
3895 | if (!err) | |
3896 | *changed = true; | |
3897 | return err; | |
36fbf1e5 JP |
3898 | } |
3899 | ||
3900 | static int rtnl_linkprop(int cmd, struct sk_buff *skb, struct nlmsghdr *nlh, | |
3901 | struct netlink_ext_ack *extack) | |
3902 | { | |
3903 | struct net *net = sock_net(skb->sk); | |
3904 | struct nlattr *tb[IFLA_MAX + 1]; | |
3905 | struct net_device *dev; | |
3906 | struct ifinfomsg *ifm; | |
3907 | bool changed = false; | |
3908 | struct nlattr *attr; | |
3909 | int err, rem; | |
3910 | ||
3911 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy, extack); | |
3912 | if (err) | |
3913 | return err; | |
3914 | ||
3915 | err = rtnl_ensure_unique_netns(tb, extack, true); | |
3916 | if (err) | |
3917 | return err; | |
3918 | ||
3919 | ifm = nlmsg_data(nlh); | |
cc6090e9 | 3920 | if (ifm->ifi_index > 0) |
36fbf1e5 | 3921 | dev = __dev_get_by_index(net, ifm->ifi_index); |
76c9ac0e | 3922 | else if (tb[IFLA_IFNAME] || tb[IFLA_ALT_IFNAME]) |
5ea08b52 | 3923 | dev = rtnl_dev_get(net, tb); |
cc6090e9 | 3924 | else |
36fbf1e5 | 3925 | return -EINVAL; |
36fbf1e5 JP |
3926 | |
3927 | if (!dev) | |
3928 | return -ENODEV; | |
3929 | ||
3930 | if (!tb[IFLA_PROP_LIST]) | |
3931 | return 0; | |
3932 | ||
3933 | nla_for_each_nested(attr, tb[IFLA_PROP_LIST], rem) { | |
3934 | switch (nla_type(attr)) { | |
3935 | case IFLA_ALT_IFNAME: | |
3936 | err = rtnl_alt_ifname(cmd, dev, attr, &changed, extack); | |
3937 | if (err) | |
3938 | return err; | |
3939 | break; | |
3940 | } | |
3941 | } | |
3942 | ||
3943 | if (changed) | |
3944 | netdev_state_change(dev); | |
3945 | return 0; | |
3946 | } | |
3947 | ||
3948 | static int rtnl_newlinkprop(struct sk_buff *skb, struct nlmsghdr *nlh, | |
3949 | struct netlink_ext_ack *extack) | |
3950 | { | |
3951 | return rtnl_linkprop(RTM_NEWLINKPROP, skb, nlh, extack); | |
3952 | } | |
3953 | ||
3954 | static int rtnl_dellinkprop(struct sk_buff *skb, struct nlmsghdr *nlh, | |
3955 | struct netlink_ext_ack *extack) | |
3956 | { | |
3957 | return rtnl_linkprop(RTM_DELLINKPROP, skb, nlh, extack); | |
3958 | } | |
3959 | ||
ebfe3c51 | 3960 | static u32 rtnl_calcit(struct sk_buff *skb, struct nlmsghdr *nlh) |
c7ac8679 | 3961 | { |
115c9b81 | 3962 | struct net *net = sock_net(skb->sk); |
ebfe3c51 | 3963 | size_t min_ifinfo_dump_size = 0; |
115c9b81 GR |
3964 | struct nlattr *tb[IFLA_MAX+1]; |
3965 | u32 ext_filter_mask = 0; | |
ebfe3c51 | 3966 | struct net_device *dev; |
e5eca6d4 MS |
3967 | int hdrlen; |
3968 | ||
3969 | /* Same kernel<->userspace interface hack as in rtnl_dump_ifinfo. */ | |
3970 | hdrlen = nlmsg_len(nlh) < sizeof(struct ifinfomsg) ? | |
3971 | sizeof(struct rtgenmsg) : sizeof(struct ifinfomsg); | |
115c9b81 | 3972 | |
8cb08174 | 3973 | if (nlmsg_parse_deprecated(nlh, hdrlen, tb, IFLA_MAX, ifla_policy, NULL) >= 0) { |
a4b64fbe ED |
3974 | if (tb[IFLA_EXT_MASK]) |
3975 | ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]); | |
3976 | } | |
115c9b81 GR |
3977 | |
3978 | if (!ext_filter_mask) | |
3979 | return NLMSG_GOODSIZE; | |
3980 | /* | |
3981 | * traverse the list of net devices and compute the minimum | |
3982 | * buffer size based upon the filter mask. | |
3983 | */ | |
6853dd48 FW |
3984 | rcu_read_lock(); |
3985 | for_each_netdev_rcu(net, dev) { | |
ebfe3c51 DZ |
3986 | min_ifinfo_dump_size = max(min_ifinfo_dump_size, |
3987 | if_nlmsg_size(dev, ext_filter_mask)); | |
115c9b81 | 3988 | } |
6853dd48 | 3989 | rcu_read_unlock(); |
115c9b81 | 3990 | |
93af2056 | 3991 | return nlmsg_total_size(min_ifinfo_dump_size); |
c7ac8679 GR |
3992 | } |
3993 | ||
42bad1da | 3994 | static int rtnl_dump_all(struct sk_buff *skb, struct netlink_callback *cb) |
1da177e4 LT |
3995 | { |
3996 | int idx; | |
3997 | int s_idx = cb->family; | |
87ccbb1f | 3998 | int type = cb->nlh->nlmsg_type - RTM_BASE; |
c63586dc | 3999 | int ret = 0; |
1da177e4 LT |
4000 | |
4001 | if (s_idx == 0) | |
4002 | s_idx = 1; | |
6853dd48 | 4003 | |
25239cee | 4004 | for (idx = 1; idx <= RTNL_FAMILY_MAX; idx++) { |
51e13685 | 4005 | struct rtnl_link __rcu **tab; |
addf9b90 | 4006 | struct rtnl_link *link; |
6853dd48 FW |
4007 | rtnl_dumpit_func dumpit; |
4008 | ||
1da177e4 LT |
4009 | if (idx < s_idx || idx == PF_PACKET) |
4010 | continue; | |
6853dd48 | 4011 | |
addf9b90 | 4012 | if (type < 0 || type >= RTM_NR_MSGTYPES) |
1da177e4 | 4013 | continue; |
6853dd48 | 4014 | |
addf9b90 FW |
4015 | tab = rcu_dereference_rtnl(rtnl_msg_handlers[idx]); |
4016 | if (!tab) | |
4017 | continue; | |
4018 | ||
51e13685 | 4019 | link = rcu_dereference_rtnl(tab[type]); |
addf9b90 FW |
4020 | if (!link) |
4021 | continue; | |
4022 | ||
4023 | dumpit = link->dumpit; | |
6853dd48 FW |
4024 | if (!dumpit) |
4025 | continue; | |
4026 | ||
0465277f | 4027 | if (idx > s_idx) { |
1da177e4 | 4028 | memset(&cb->args[0], 0, sizeof(cb->args)); |
0465277f ND |
4029 | cb->prev_seq = 0; |
4030 | cb->seq = 0; | |
4031 | } | |
c63586dc | 4032 | ret = dumpit(skb, cb); |
5e1acb4a | 4033 | if (ret) |
1da177e4 LT |
4034 | break; |
4035 | } | |
4036 | cb->family = idx; | |
4037 | ||
c63586dc | 4038 | return skb->len ? : ret; |
1da177e4 LT |
4039 | } |
4040 | ||
395eea6c | 4041 | struct sk_buff *rtmsg_ifinfo_build_skb(int type, struct net_device *dev, |
3d3ea5af | 4042 | unsigned int change, |
38e01b30 | 4043 | u32 event, gfp_t flags, int *new_nsid, |
59d3efd2 MW |
4044 | int new_ifindex, u32 portid, |
4045 | const struct nlmsghdr *nlh) | |
1da177e4 | 4046 | { |
c346dca1 | 4047 | struct net *net = dev_net(dev); |
1da177e4 | 4048 | struct sk_buff *skb; |
0ec6d3f4 | 4049 | int err = -ENOBUFS; |
59d3efd2 | 4050 | u32 seq = 0; |
1da177e4 | 4051 | |
50af5969 | 4052 | skb = nlmsg_new(if_nlmsg_size(dev, 0), flags); |
0ec6d3f4 TG |
4053 | if (skb == NULL) |
4054 | goto errout; | |
1da177e4 | 4055 | |
59d3efd2 MW |
4056 | if (nlmsg_report(nlh)) |
4057 | seq = nlmsg_seq(nlh); | |
4058 | else | |
4059 | portid = 0; | |
4060 | ||
79e1ad14 | 4061 | err = rtnl_fill_ifinfo(skb, dev, dev_net(dev), |
1d997f10 | 4062 | type, portid, seq, change, 0, 0, event, |
d4e4fdf9 | 4063 | new_nsid, new_ifindex, -1, flags); |
26932566 PM |
4064 | if (err < 0) { |
4065 | /* -EMSGSIZE implies BUG in if_nlmsg_size() */ | |
4066 | WARN_ON(err == -EMSGSIZE); | |
4067 | kfree_skb(skb); | |
4068 | goto errout; | |
4069 | } | |
395eea6c | 4070 | return skb; |
0ec6d3f4 TG |
4071 | errout: |
4072 | if (err < 0) | |
4b3da706 | 4073 | rtnl_set_sk_err(net, RTNLGRP_LINK, err); |
395eea6c MB |
4074 | return NULL; |
4075 | } | |
4076 | ||
1d997f10 HL |
4077 | void rtmsg_ifinfo_send(struct sk_buff *skb, struct net_device *dev, gfp_t flags, |
4078 | u32 portid, const struct nlmsghdr *nlh) | |
395eea6c MB |
4079 | { |
4080 | struct net *net = dev_net(dev); | |
4081 | ||
1d997f10 | 4082 | rtnl_notify(skb, net, portid, RTNLGRP_LINK, nlh, flags); |
395eea6c MB |
4083 | } |
4084 | ||
3d3ea5af VY |
4085 | static void rtmsg_ifinfo_event(int type, struct net_device *dev, |
4086 | unsigned int change, u32 event, | |
1d997f10 HL |
4087 | gfp_t flags, int *new_nsid, int new_ifindex, |
4088 | u32 portid, const struct nlmsghdr *nlh) | |
395eea6c MB |
4089 | { |
4090 | struct sk_buff *skb; | |
4091 | ||
ed2a80ab ND |
4092 | if (dev->reg_state != NETREG_REGISTERED) |
4093 | return; | |
4094 | ||
38e01b30 | 4095 | skb = rtmsg_ifinfo_build_skb(type, dev, change, event, flags, new_nsid, |
59d3efd2 | 4096 | new_ifindex, portid, nlh); |
395eea6c | 4097 | if (skb) |
1d997f10 | 4098 | rtmsg_ifinfo_send(skb, dev, flags, portid, nlh); |
1da177e4 | 4099 | } |
3d3ea5af VY |
4100 | |
4101 | void rtmsg_ifinfo(int type, struct net_device *dev, unsigned int change, | |
1d997f10 | 4102 | gfp_t flags, u32 portid, const struct nlmsghdr *nlh) |
3d3ea5af | 4103 | { |
38e01b30 | 4104 | rtmsg_ifinfo_event(type, dev, change, rtnl_get_event(0), flags, |
1d997f10 | 4105 | NULL, 0, portid, nlh); |
3d3ea5af | 4106 | } |
1da177e4 | 4107 | |
6621dd29 | 4108 | void rtmsg_ifinfo_newnet(int type, struct net_device *dev, unsigned int change, |
38e01b30 | 4109 | gfp_t flags, int *new_nsid, int new_ifindex) |
6621dd29 ND |
4110 | { |
4111 | rtmsg_ifinfo_event(type, dev, change, rtnl_get_event(0), flags, | |
1d997f10 | 4112 | new_nsid, new_ifindex, 0, NULL); |
6621dd29 ND |
4113 | } |
4114 | ||
d83b0603 JF |
4115 | static int nlmsg_populate_fdb_fill(struct sk_buff *skb, |
4116 | struct net_device *dev, | |
1e53d5bb | 4117 | u8 *addr, u16 vid, u32 pid, u32 seq, |
1c104a6b | 4118 | int type, unsigned int flags, |
b3379041 | 4119 | int nlflags, u16 ndm_state) |
d83b0603 JF |
4120 | { |
4121 | struct nlmsghdr *nlh; | |
4122 | struct ndmsg *ndm; | |
4123 | ||
1c104a6b | 4124 | nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ndm), nlflags); |
d83b0603 JF |
4125 | if (!nlh) |
4126 | return -EMSGSIZE; | |
4127 | ||
4128 | ndm = nlmsg_data(nlh); | |
4129 | ndm->ndm_family = AF_BRIDGE; | |
4130 | ndm->ndm_pad1 = 0; | |
4131 | ndm->ndm_pad2 = 0; | |
4132 | ndm->ndm_flags = flags; | |
4133 | ndm->ndm_type = 0; | |
4134 | ndm->ndm_ifindex = dev->ifindex; | |
b3379041 | 4135 | ndm->ndm_state = ndm_state; |
d83b0603 | 4136 | |
aa540695 | 4137 | if (nla_put(skb, NDA_LLADDR, dev->addr_len, addr)) |
d83b0603 | 4138 | goto nla_put_failure; |
1e53d5bb HS |
4139 | if (vid) |
4140 | if (nla_put(skb, NDA_VLAN, sizeof(u16), &vid)) | |
4141 | goto nla_put_failure; | |
d83b0603 | 4142 | |
053c095a JB |
4143 | nlmsg_end(skb, nlh); |
4144 | return 0; | |
d83b0603 JF |
4145 | |
4146 | nla_put_failure: | |
4147 | nlmsg_cancel(skb, nlh); | |
4148 | return -EMSGSIZE; | |
4149 | } | |
4150 | ||
aa540695 | 4151 | static inline size_t rtnl_fdb_nlmsg_size(const struct net_device *dev) |
3ff661c3 | 4152 | { |
f82ef3e1 | 4153 | return NLMSG_ALIGN(sizeof(struct ndmsg)) + |
aa540695 | 4154 | nla_total_size(dev->addr_len) + /* NDA_LLADDR */ |
f82ef3e1 SD |
4155 | nla_total_size(sizeof(u16)) + /* NDA_VLAN */ |
4156 | 0; | |
3ff661c3 JF |
4157 | } |
4158 | ||
b3379041 HS |
4159 | static void rtnl_fdb_notify(struct net_device *dev, u8 *addr, u16 vid, int type, |
4160 | u16 ndm_state) | |
3ff661c3 JF |
4161 | { |
4162 | struct net *net = dev_net(dev); | |
4163 | struct sk_buff *skb; | |
4164 | int err = -ENOBUFS; | |
4165 | ||
aa540695 | 4166 | skb = nlmsg_new(rtnl_fdb_nlmsg_size(dev), GFP_ATOMIC); |
3ff661c3 JF |
4167 | if (!skb) |
4168 | goto errout; | |
4169 | ||
1e53d5bb | 4170 | err = nlmsg_populate_fdb_fill(skb, dev, addr, vid, |
b3379041 | 4171 | 0, 0, type, NTF_SELF, 0, ndm_state); |
3ff661c3 JF |
4172 | if (err < 0) { |
4173 | kfree_skb(skb); | |
4174 | goto errout; | |
4175 | } | |
4176 | ||
4177 | rtnl_notify(skb, net, 0, RTNLGRP_NEIGH, NULL, GFP_ATOMIC); | |
4178 | return; | |
4179 | errout: | |
4180 | rtnl_set_sk_err(net, RTNLGRP_NEIGH, err); | |
4181 | } | |
4182 | ||
a986967e | 4183 | /* |
090096bf VY |
4184 | * ndo_dflt_fdb_add - default netdevice operation to add an FDB entry |
4185 | */ | |
4186 | int ndo_dflt_fdb_add(struct ndmsg *ndm, | |
4187 | struct nlattr *tb[], | |
4188 | struct net_device *dev, | |
f6f6424b | 4189 | const unsigned char *addr, u16 vid, |
090096bf VY |
4190 | u16 flags) |
4191 | { | |
4192 | int err = -EINVAL; | |
4193 | ||
4194 | /* If aging addresses are supported device will need to | |
4195 | * implement its own handler for this. | |
4196 | */ | |
4197 | if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) { | |
78ecc890 | 4198 | netdev_info(dev, "default FDB implementation only supports local addresses\n"); |
090096bf VY |
4199 | return err; |
4200 | } | |
4201 | ||
a35ec8e3 HS |
4202 | if (tb[NDA_FLAGS_EXT]) { |
4203 | netdev_info(dev, "invalid flags given to default FDB implementation\n"); | |
4204 | return err; | |
4205 | } | |
4206 | ||
65891fea | 4207 | if (vid) { |
23ac0b42 | 4208 | netdev_info(dev, "vlans aren't supported yet for dev_uc|mc_add()\n"); |
65891fea OG |
4209 | return err; |
4210 | } | |
4211 | ||
090096bf VY |
4212 | if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr)) |
4213 | err = dev_uc_add_excl(dev, addr); | |
4214 | else if (is_multicast_ether_addr(addr)) | |
4215 | err = dev_mc_add_excl(dev, addr); | |
4216 | ||
4217 | /* Only return duplicate errors if NLM_F_EXCL is set */ | |
4218 | if (err == -EEXIST && !(flags & NLM_F_EXCL)) | |
4219 | err = 0; | |
4220 | ||
4221 | return err; | |
4222 | } | |
4223 | EXPORT_SYMBOL(ndo_dflt_fdb_add); | |
4224 | ||
b88d12e4 FW |
4225 | static int fdb_vid_parse(struct nlattr *vlan_attr, u16 *p_vid, |
4226 | struct netlink_ext_ack *extack) | |
f6f6424b JP |
4227 | { |
4228 | u16 vid = 0; | |
4229 | ||
4230 | if (vlan_attr) { | |
4231 | if (nla_len(vlan_attr) != sizeof(u16)) { | |
b88d12e4 | 4232 | NL_SET_ERR_MSG(extack, "invalid vlan attribute size"); |
f6f6424b JP |
4233 | return -EINVAL; |
4234 | } | |
4235 | ||
4236 | vid = nla_get_u16(vlan_attr); | |
4237 | ||
4238 | if (!vid || vid >= VLAN_VID_MASK) { | |
b88d12e4 | 4239 | NL_SET_ERR_MSG(extack, "invalid vlan id"); |
f6f6424b JP |
4240 | return -EINVAL; |
4241 | } | |
4242 | } | |
4243 | *p_vid = vid; | |
4244 | return 0; | |
4245 | } | |
4246 | ||
c21ef3e3 DA |
4247 | static int rtnl_fdb_add(struct sk_buff *skb, struct nlmsghdr *nlh, |
4248 | struct netlink_ext_ack *extack) | |
77162022 JF |
4249 | { |
4250 | struct net *net = sock_net(skb->sk); | |
77162022 JF |
4251 | struct ndmsg *ndm; |
4252 | struct nlattr *tb[NDA_MAX+1]; | |
4253 | struct net_device *dev; | |
4254 | u8 *addr; | |
f6f6424b | 4255 | u16 vid; |
77162022 JF |
4256 | int err; |
4257 | ||
8cb08174 JB |
4258 | err = nlmsg_parse_deprecated(nlh, sizeof(*ndm), tb, NDA_MAX, NULL, |
4259 | extack); | |
77162022 JF |
4260 | if (err < 0) |
4261 | return err; | |
4262 | ||
4263 | ndm = nlmsg_data(nlh); | |
4264 | if (ndm->ndm_ifindex == 0) { | |
b88d12e4 | 4265 | NL_SET_ERR_MSG(extack, "invalid ifindex"); |
77162022 JF |
4266 | return -EINVAL; |
4267 | } | |
4268 | ||
4269 | dev = __dev_get_by_index(net, ndm->ndm_ifindex); | |
4270 | if (dev == NULL) { | |
b88d12e4 | 4271 | NL_SET_ERR_MSG(extack, "unknown ifindex"); |
77162022 JF |
4272 | return -ENODEV; |
4273 | } | |
4274 | ||
4275 | if (!tb[NDA_LLADDR] || nla_len(tb[NDA_LLADDR]) != ETH_ALEN) { | |
b88d12e4 | 4276 | NL_SET_ERR_MSG(extack, "invalid address"); |
77162022 JF |
4277 | return -EINVAL; |
4278 | } | |
4279 | ||
da715775 IS |
4280 | if (dev->type != ARPHRD_ETHER) { |
4281 | NL_SET_ERR_MSG(extack, "FDB add only supported for Ethernet devices"); | |
4282 | return -EINVAL; | |
4283 | } | |
4284 | ||
77162022 | 4285 | addr = nla_data(tb[NDA_LLADDR]); |
77162022 | 4286 | |
b88d12e4 | 4287 | err = fdb_vid_parse(tb[NDA_VLAN], &vid, extack); |
f6f6424b JP |
4288 | if (err) |
4289 | return err; | |
4290 | ||
77162022 JF |
4291 | err = -EOPNOTSUPP; |
4292 | ||
4293 | /* Support fdb on master device the net/bridge default case */ | |
4294 | if ((!ndm->ndm_flags || ndm->ndm_flags & NTF_MASTER) && | |
2e92a2d0 | 4295 | netif_is_bridge_port(dev)) { |
898e5061 JP |
4296 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
4297 | const struct net_device_ops *ops = br_dev->netdev_ops; | |
4298 | ||
f6f6424b | 4299 | err = ops->ndo_fdb_add(ndm, tb, dev, addr, vid, |
87b0984e | 4300 | nlh->nlmsg_flags, extack); |
77162022 JF |
4301 | if (err) |
4302 | goto out; | |
4303 | else | |
4304 | ndm->ndm_flags &= ~NTF_MASTER; | |
4305 | } | |
4306 | ||
4307 | /* Embedded bridge, macvlan, and any other device support */ | |
090096bf VY |
4308 | if ((ndm->ndm_flags & NTF_SELF)) { |
4309 | if (dev->netdev_ops->ndo_fdb_add) | |
4310 | err = dev->netdev_ops->ndo_fdb_add(ndm, tb, dev, addr, | |
f6f6424b | 4311 | vid, |
87b0984e PM |
4312 | nlh->nlmsg_flags, |
4313 | extack); | |
090096bf | 4314 | else |
f6f6424b | 4315 | err = ndo_dflt_fdb_add(ndm, tb, dev, addr, vid, |
090096bf | 4316 | nlh->nlmsg_flags); |
77162022 | 4317 | |
3ff661c3 | 4318 | if (!err) { |
b3379041 HS |
4319 | rtnl_fdb_notify(dev, addr, vid, RTM_NEWNEIGH, |
4320 | ndm->ndm_state); | |
77162022 | 4321 | ndm->ndm_flags &= ~NTF_SELF; |
3ff661c3 | 4322 | } |
77162022 JF |
4323 | } |
4324 | out: | |
4325 | return err; | |
4326 | } | |
4327 | ||
a986967e | 4328 | /* |
090096bf VY |
4329 | * ndo_dflt_fdb_del - default netdevice operation to delete an FDB entry |
4330 | */ | |
4331 | int ndo_dflt_fdb_del(struct ndmsg *ndm, | |
4332 | struct nlattr *tb[], | |
4333 | struct net_device *dev, | |
f6f6424b | 4334 | const unsigned char *addr, u16 vid) |
090096bf | 4335 | { |
c8a89c4a | 4336 | int err = -EINVAL; |
090096bf VY |
4337 | |
4338 | /* If aging addresses are supported device will need to | |
4339 | * implement its own handler for this. | |
4340 | */ | |
64535993 | 4341 | if (!(ndm->ndm_state & NUD_PERMANENT)) { |
78ecc890 | 4342 | netdev_info(dev, "default FDB implementation only supports local addresses\n"); |
c8a89c4a | 4343 | return err; |
090096bf VY |
4344 | } |
4345 | ||
4346 | if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr)) | |
4347 | err = dev_uc_del(dev, addr); | |
4348 | else if (is_multicast_ether_addr(addr)) | |
4349 | err = dev_mc_del(dev, addr); | |
090096bf VY |
4350 | |
4351 | return err; | |
4352 | } | |
4353 | EXPORT_SYMBOL(ndo_dflt_fdb_del); | |
4354 | ||
c21ef3e3 DA |
4355 | static int rtnl_fdb_del(struct sk_buff *skb, struct nlmsghdr *nlh, |
4356 | struct netlink_ext_ack *extack) | |
77162022 | 4357 | { |
9e834259 | 4358 | bool del_bulk = !!(nlh->nlmsg_flags & NLM_F_BULK); |
77162022 | 4359 | struct net *net = sock_net(skb->sk); |
9e834259 | 4360 | const struct net_device_ops *ops; |
77162022 | 4361 | struct ndmsg *ndm; |
1690be63 | 4362 | struct nlattr *tb[NDA_MAX+1]; |
77162022 | 4363 | struct net_device *dev; |
9e834259 | 4364 | __u8 *addr = NULL; |
7d311801 | 4365 | int err; |
f6f6424b | 4366 | u16 vid; |
77162022 | 4367 | |
90f62cf3 | 4368 | if (!netlink_capable(skb, CAP_NET_ADMIN)) |
1690be63 VY |
4369 | return -EPERM; |
4370 | ||
9e834259 NA |
4371 | if (!del_bulk) { |
4372 | err = nlmsg_parse_deprecated(nlh, sizeof(*ndm), tb, NDA_MAX, | |
4373 | NULL, extack); | |
4374 | } else { | |
38985e8c AC |
4375 | /* For bulk delete, the drivers will parse the message with |
4376 | * policy. | |
4377 | */ | |
4378 | err = nlmsg_parse(nlh, sizeof(*ndm), tb, NDA_MAX, NULL, extack); | |
9e834259 | 4379 | } |
1690be63 VY |
4380 | if (err < 0) |
4381 | return err; | |
77162022 JF |
4382 | |
4383 | ndm = nlmsg_data(nlh); | |
4384 | if (ndm->ndm_ifindex == 0) { | |
b88d12e4 | 4385 | NL_SET_ERR_MSG(extack, "invalid ifindex"); |
77162022 JF |
4386 | return -EINVAL; |
4387 | } | |
4388 | ||
4389 | dev = __dev_get_by_index(net, ndm->ndm_ifindex); | |
4390 | if (dev == NULL) { | |
b88d12e4 | 4391 | NL_SET_ERR_MSG(extack, "unknown ifindex"); |
77162022 JF |
4392 | return -ENODEV; |
4393 | } | |
4394 | ||
9e834259 NA |
4395 | if (!del_bulk) { |
4396 | if (!tb[NDA_LLADDR] || nla_len(tb[NDA_LLADDR]) != ETH_ALEN) { | |
4397 | NL_SET_ERR_MSG(extack, "invalid address"); | |
4398 | return -EINVAL; | |
4399 | } | |
4400 | addr = nla_data(tb[NDA_LLADDR]); | |
38985e8c AC |
4401 | |
4402 | err = fdb_vid_parse(tb[NDA_VLAN], &vid, extack); | |
4403 | if (err) | |
4404 | return err; | |
1690be63 VY |
4405 | } |
4406 | ||
da715775 IS |
4407 | if (dev->type != ARPHRD_ETHER) { |
4408 | NL_SET_ERR_MSG(extack, "FDB delete only supported for Ethernet devices"); | |
4409 | return -EINVAL; | |
4410 | } | |
4411 | ||
77162022 JF |
4412 | err = -EOPNOTSUPP; |
4413 | ||
4414 | /* Support fdb on master device the net/bridge default case */ | |
4415 | if ((!ndm->ndm_flags || ndm->ndm_flags & NTF_MASTER) && | |
2e92a2d0 | 4416 | netif_is_bridge_port(dev)) { |
898e5061 | 4417 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
77162022 | 4418 | |
9e834259 NA |
4419 | ops = br_dev->netdev_ops; |
4420 | if (!del_bulk) { | |
4421 | if (ops->ndo_fdb_del) | |
ca4567f1 | 4422 | err = ops->ndo_fdb_del(ndm, tb, dev, addr, vid, extack); |
9e834259 NA |
4423 | } else { |
4424 | if (ops->ndo_fdb_del_bulk) | |
38985e8c | 4425 | err = ops->ndo_fdb_del_bulk(nlh, dev, extack); |
9e834259 | 4426 | } |
77162022 JF |
4427 | |
4428 | if (err) | |
4429 | goto out; | |
4430 | else | |
4431 | ndm->ndm_flags &= ~NTF_MASTER; | |
4432 | } | |
4433 | ||
4434 | /* Embedded bridge, macvlan, and any other device support */ | |
090096bf | 4435 | if (ndm->ndm_flags & NTF_SELF) { |
9e834259 NA |
4436 | ops = dev->netdev_ops; |
4437 | if (!del_bulk) { | |
4438 | if (ops->ndo_fdb_del) | |
ca4567f1 | 4439 | err = ops->ndo_fdb_del(ndm, tb, dev, addr, vid, extack); |
9e834259 NA |
4440 | else |
4441 | err = ndo_dflt_fdb_del(ndm, tb, dev, addr, vid); | |
4442 | } else { | |
4443 | /* in case err was cleared by NTF_MASTER call */ | |
4444 | err = -EOPNOTSUPP; | |
4445 | if (ops->ndo_fdb_del_bulk) | |
38985e8c | 4446 | err = ops->ndo_fdb_del_bulk(nlh, dev, extack); |
9e834259 | 4447 | } |
77162022 | 4448 | |
3ff661c3 | 4449 | if (!err) { |
9e834259 NA |
4450 | if (!del_bulk) |
4451 | rtnl_fdb_notify(dev, addr, vid, RTM_DELNEIGH, | |
4452 | ndm->ndm_state); | |
77162022 | 4453 | ndm->ndm_flags &= ~NTF_SELF; |
3ff661c3 | 4454 | } |
77162022 JF |
4455 | } |
4456 | out: | |
4457 | return err; | |
4458 | } | |
4459 | ||
d83b0603 JF |
4460 | static int nlmsg_populate_fdb(struct sk_buff *skb, |
4461 | struct netlink_callback *cb, | |
4462 | struct net_device *dev, | |
4463 | int *idx, | |
4464 | struct netdev_hw_addr_list *list) | |
4465 | { | |
4466 | struct netdev_hw_addr *ha; | |
4467 | int err; | |
15e47304 | 4468 | u32 portid, seq; |
d83b0603 | 4469 | |
15e47304 | 4470 | portid = NETLINK_CB(cb->skb).portid; |
d83b0603 JF |
4471 | seq = cb->nlh->nlmsg_seq; |
4472 | ||
4473 | list_for_each_entry(ha, &list->list, list) { | |
d297653d | 4474 | if (*idx < cb->args[2]) |
d83b0603 JF |
4475 | goto skip; |
4476 | ||
1e53d5bb | 4477 | err = nlmsg_populate_fdb_fill(skb, dev, ha->addr, 0, |
a7a558fe | 4478 | portid, seq, |
1c104a6b | 4479 | RTM_NEWNEIGH, NTF_SELF, |
b3379041 | 4480 | NLM_F_MULTI, NUD_PERMANENT); |
d83b0603 JF |
4481 | if (err < 0) |
4482 | return err; | |
4483 | skip: | |
4484 | *idx += 1; | |
4485 | } | |
4486 | return 0; | |
4487 | } | |
4488 | ||
4489 | /** | |
2c53040f | 4490 | * ndo_dflt_fdb_dump - default netdevice operation to dump an FDB table. |
a986967e BVA |
4491 | * @skb: socket buffer to store message in |
4492 | * @cb: netlink callback | |
d83b0603 | 4493 | * @dev: netdevice |
a986967e BVA |
4494 | * @filter_dev: ignored |
4495 | * @idx: the number of FDB table entries dumped is added to *@idx | |
d83b0603 JF |
4496 | * |
4497 | * Default netdevice operation to dump the existing unicast address list. | |
91f3e7b1 | 4498 | * Returns number of addresses from list put in skb. |
d83b0603 JF |
4499 | */ |
4500 | int ndo_dflt_fdb_dump(struct sk_buff *skb, | |
4501 | struct netlink_callback *cb, | |
4502 | struct net_device *dev, | |
5d5eacb3 | 4503 | struct net_device *filter_dev, |
d297653d | 4504 | int *idx) |
d83b0603 JF |
4505 | { |
4506 | int err; | |
4507 | ||
68883893 ED |
4508 | if (dev->type != ARPHRD_ETHER) |
4509 | return -EINVAL; | |
4510 | ||
d83b0603 | 4511 | netif_addr_lock_bh(dev); |
d297653d | 4512 | err = nlmsg_populate_fdb(skb, cb, dev, idx, &dev->uc); |
d83b0603 JF |
4513 | if (err) |
4514 | goto out; | |
2934c9db | 4515 | err = nlmsg_populate_fdb(skb, cb, dev, idx, &dev->mc); |
d83b0603 JF |
4516 | out: |
4517 | netif_addr_unlock_bh(dev); | |
d297653d | 4518 | return err; |
d83b0603 JF |
4519 | } |
4520 | EXPORT_SYMBOL(ndo_dflt_fdb_dump); | |
4521 | ||
8c6e137f DA |
4522 | static int valid_fdb_dump_strict(const struct nlmsghdr *nlh, |
4523 | int *br_idx, int *brport_idx, | |
4524 | struct netlink_ext_ack *extack) | |
4525 | { | |
4526 | struct nlattr *tb[NDA_MAX + 1]; | |
4527 | struct ndmsg *ndm; | |
4528 | int err, i; | |
4529 | ||
4530 | if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*ndm))) { | |
4531 | NL_SET_ERR_MSG(extack, "Invalid header for fdb dump request"); | |
4532 | return -EINVAL; | |
4533 | } | |
4534 | ||
4535 | ndm = nlmsg_data(nlh); | |
4536 | if (ndm->ndm_pad1 || ndm->ndm_pad2 || ndm->ndm_state || | |
4537 | ndm->ndm_flags || ndm->ndm_type) { | |
8b73018f | 4538 | NL_SET_ERR_MSG(extack, "Invalid values in header for fdb dump request"); |
8c6e137f DA |
4539 | return -EINVAL; |
4540 | } | |
4541 | ||
8cb08174 JB |
4542 | err = nlmsg_parse_deprecated_strict(nlh, sizeof(struct ndmsg), tb, |
4543 | NDA_MAX, NULL, extack); | |
8c6e137f DA |
4544 | if (err < 0) |
4545 | return err; | |
4546 | ||
4547 | *brport_idx = ndm->ndm_ifindex; | |
4548 | for (i = 0; i <= NDA_MAX; ++i) { | |
4549 | if (!tb[i]) | |
4550 | continue; | |
4551 | ||
4552 | switch (i) { | |
4553 | case NDA_IFINDEX: | |
4554 | if (nla_len(tb[i]) != sizeof(u32)) { | |
4555 | NL_SET_ERR_MSG(extack, "Invalid IFINDEX attribute in fdb dump request"); | |
4556 | return -EINVAL; | |
4557 | } | |
4558 | *brport_idx = nla_get_u32(tb[NDA_IFINDEX]); | |
4559 | break; | |
4560 | case NDA_MASTER: | |
4561 | if (nla_len(tb[i]) != sizeof(u32)) { | |
4562 | NL_SET_ERR_MSG(extack, "Invalid MASTER attribute in fdb dump request"); | |
4563 | return -EINVAL; | |
4564 | } | |
4565 | *br_idx = nla_get_u32(tb[NDA_MASTER]); | |
4566 | break; | |
4567 | default: | |
4568 | NL_SET_ERR_MSG(extack, "Unsupported attribute in fdb dump request"); | |
4569 | return -EINVAL; | |
4570 | } | |
4571 | } | |
4572 | ||
4573 | return 0; | |
4574 | } | |
4575 | ||
8dfbda19 DA |
4576 | static int valid_fdb_dump_legacy(const struct nlmsghdr *nlh, |
4577 | int *br_idx, int *brport_idx, | |
4578 | struct netlink_ext_ack *extack) | |
77162022 | 4579 | { |
5e6d2435 | 4580 | struct nlattr *tb[IFLA_MAX+1]; |
8dfbda19 | 4581 | int err; |
5e6d2435 | 4582 | |
bd961c9b MFO |
4583 | /* A hack to preserve kernel<->userspace interface. |
4584 | * Before Linux v4.12 this code accepted ndmsg since iproute2 v3.3.0. | |
4585 | * However, ndmsg is shorter than ifinfomsg thus nlmsg_parse() bails. | |
4586 | * So, check for ndmsg with an optional u32 attribute (not used here). | |
4587 | * Fortunately these sizes don't conflict with the size of ifinfomsg | |
4588 | * with an optional attribute. | |
4589 | */ | |
8dfbda19 DA |
4590 | if (nlmsg_len(nlh) != sizeof(struct ndmsg) && |
4591 | (nlmsg_len(nlh) != sizeof(struct ndmsg) + | |
bd961c9b | 4592 | nla_attr_size(sizeof(u32)))) { |
4565d7e5 DA |
4593 | struct ifinfomsg *ifm; |
4594 | ||
8cb08174 JB |
4595 | err = nlmsg_parse_deprecated(nlh, sizeof(struct ifinfomsg), |
4596 | tb, IFLA_MAX, ifla_policy, | |
4597 | extack); | |
bd961c9b MFO |
4598 | if (err < 0) { |
4599 | return -EINVAL; | |
4600 | } else if (err == 0) { | |
4601 | if (tb[IFLA_MASTER]) | |
8dfbda19 | 4602 | *br_idx = nla_get_u32(tb[IFLA_MASTER]); |
bd961c9b | 4603 | } |
5e6d2435 | 4604 | |
4565d7e5 | 4605 | ifm = nlmsg_data(nlh); |
8dfbda19 | 4606 | *brport_idx = ifm->ifi_index; |
bd961c9b | 4607 | } |
8dfbda19 DA |
4608 | return 0; |
4609 | } | |
4610 | ||
4611 | static int rtnl_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb) | |
4612 | { | |
4613 | struct net_device *dev; | |
4614 | struct net_device *br_dev = NULL; | |
4615 | const struct net_device_ops *ops = NULL; | |
4616 | const struct net_device_ops *cops = NULL; | |
4617 | struct net *net = sock_net(skb->sk); | |
4618 | struct hlist_head *head; | |
4619 | int brport_idx = 0; | |
4620 | int br_idx = 0; | |
4621 | int h, s_h; | |
4622 | int idx = 0, s_idx; | |
4623 | int err = 0; | |
4624 | int fidx = 0; | |
4625 | ||
8c6e137f DA |
4626 | if (cb->strict_check) |
4627 | err = valid_fdb_dump_strict(cb->nlh, &br_idx, &brport_idx, | |
4628 | cb->extack); | |
4629 | else | |
4630 | err = valid_fdb_dump_legacy(cb->nlh, &br_idx, &brport_idx, | |
4631 | cb->extack); | |
8dfbda19 DA |
4632 | if (err < 0) |
4633 | return err; | |
5e6d2435 JHS |
4634 | |
4635 | if (br_idx) { | |
4636 | br_dev = __dev_get_by_index(net, br_idx); | |
4637 | if (!br_dev) | |
4638 | return -ENODEV; | |
4639 | ||
4640 | ops = br_dev->netdev_ops; | |
5e6d2435 JHS |
4641 | } |
4642 | ||
d297653d RP |
4643 | s_h = cb->args[0]; |
4644 | s_idx = cb->args[1]; | |
5e6d2435 | 4645 | |
d297653d RP |
4646 | for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) { |
4647 | idx = 0; | |
4648 | head = &net->dev_index_head[h]; | |
4649 | hlist_for_each_entry(dev, head, index_hlist) { | |
5e6d2435 | 4650 | |
d297653d | 4651 | if (brport_idx && (dev->ifindex != brport_idx)) |
5e6d2435 JHS |
4652 | continue; |
4653 | ||
d297653d | 4654 | if (!br_idx) { /* user did not specify a specific bridge */ |
2e92a2d0 | 4655 | if (netif_is_bridge_port(dev)) { |
d297653d RP |
4656 | br_dev = netdev_master_upper_dev_get(dev); |
4657 | cops = br_dev->netdev_ops; | |
4658 | } | |
4659 | } else { | |
4660 | if (dev != br_dev && | |
2e92a2d0 | 4661 | !netif_is_bridge_port(dev)) |
d297653d | 4662 | continue; |
5e6d2435 | 4663 | |
d297653d | 4664 | if (br_dev != netdev_master_upper_dev_get(dev) && |
254ec036 | 4665 | !netif_is_bridge_master(dev)) |
d297653d RP |
4666 | continue; |
4667 | cops = ops; | |
4668 | } | |
77162022 | 4669 | |
d297653d RP |
4670 | if (idx < s_idx) |
4671 | goto cont; | |
77162022 | 4672 | |
2e92a2d0 | 4673 | if (netif_is_bridge_port(dev)) { |
d297653d RP |
4674 | if (cops && cops->ndo_fdb_dump) { |
4675 | err = cops->ndo_fdb_dump(skb, cb, | |
4676 | br_dev, dev, | |
4677 | &fidx); | |
4678 | if (err == -EMSGSIZE) | |
4679 | goto out; | |
4680 | } | |
4681 | } | |
5e6d2435 | 4682 | |
d297653d RP |
4683 | if (dev->netdev_ops->ndo_fdb_dump) |
4684 | err = dev->netdev_ops->ndo_fdb_dump(skb, cb, | |
4685 | dev, NULL, | |
4686 | &fidx); | |
4687 | else | |
4688 | err = ndo_dflt_fdb_dump(skb, cb, dev, NULL, | |
4689 | &fidx); | |
4690 | if (err == -EMSGSIZE) | |
4691 | goto out; | |
4692 | ||
4693 | cops = NULL; | |
4694 | ||
4695 | /* reset fdb offset to 0 for rest of the interfaces */ | |
4696 | cb->args[2] = 0; | |
4697 | fidx = 0; | |
4698 | cont: | |
4699 | idx++; | |
4700 | } | |
77162022 | 4701 | } |
77162022 | 4702 | |
d297653d RP |
4703 | out: |
4704 | cb->args[0] = h; | |
4705 | cb->args[1] = idx; | |
4706 | cb->args[2] = fidx; | |
4707 | ||
77162022 JF |
4708 | return skb->len; |
4709 | } | |
4710 | ||
5b2f94b2 RP |
4711 | static int valid_fdb_get_strict(const struct nlmsghdr *nlh, |
4712 | struct nlattr **tb, u8 *ndm_flags, | |
4713 | int *br_idx, int *brport_idx, u8 **addr, | |
4714 | u16 *vid, struct netlink_ext_ack *extack) | |
4715 | { | |
4716 | struct ndmsg *ndm; | |
4717 | int err, i; | |
4718 | ||
4719 | if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*ndm))) { | |
4720 | NL_SET_ERR_MSG(extack, "Invalid header for fdb get request"); | |
4721 | return -EINVAL; | |
4722 | } | |
4723 | ||
4724 | ndm = nlmsg_data(nlh); | |
4725 | if (ndm->ndm_pad1 || ndm->ndm_pad2 || ndm->ndm_state || | |
4726 | ndm->ndm_type) { | |
4727 | NL_SET_ERR_MSG(extack, "Invalid values in header for fdb get request"); | |
4728 | return -EINVAL; | |
4729 | } | |
4730 | ||
4731 | if (ndm->ndm_flags & ~(NTF_MASTER | NTF_SELF)) { | |
4732 | NL_SET_ERR_MSG(extack, "Invalid flags in header for fdb get request"); | |
4733 | return -EINVAL; | |
4734 | } | |
4735 | ||
8cb08174 JB |
4736 | err = nlmsg_parse_deprecated_strict(nlh, sizeof(struct ndmsg), tb, |
4737 | NDA_MAX, nda_policy, extack); | |
5b2f94b2 RP |
4738 | if (err < 0) |
4739 | return err; | |
4740 | ||
4741 | *ndm_flags = ndm->ndm_flags; | |
4742 | *brport_idx = ndm->ndm_ifindex; | |
4743 | for (i = 0; i <= NDA_MAX; ++i) { | |
4744 | if (!tb[i]) | |
4745 | continue; | |
4746 | ||
4747 | switch (i) { | |
4748 | case NDA_MASTER: | |
4749 | *br_idx = nla_get_u32(tb[i]); | |
4750 | break; | |
4751 | case NDA_LLADDR: | |
4752 | if (nla_len(tb[i]) != ETH_ALEN) { | |
4753 | NL_SET_ERR_MSG(extack, "Invalid address in fdb get request"); | |
4754 | return -EINVAL; | |
4755 | } | |
4756 | *addr = nla_data(tb[i]); | |
4757 | break; | |
4758 | case NDA_VLAN: | |
4759 | err = fdb_vid_parse(tb[i], vid, extack); | |
4760 | if (err) | |
4761 | return err; | |
4762 | break; | |
4763 | case NDA_VNI: | |
4764 | break; | |
4765 | default: | |
4766 | NL_SET_ERR_MSG(extack, "Unsupported attribute in fdb get request"); | |
4767 | return -EINVAL; | |
4768 | } | |
4769 | } | |
4770 | ||
4771 | return 0; | |
4772 | } | |
4773 | ||
4774 | static int rtnl_fdb_get(struct sk_buff *in_skb, struct nlmsghdr *nlh, | |
4775 | struct netlink_ext_ack *extack) | |
4776 | { | |
4777 | struct net_device *dev = NULL, *br_dev = NULL; | |
4778 | const struct net_device_ops *ops = NULL; | |
4779 | struct net *net = sock_net(in_skb->sk); | |
4780 | struct nlattr *tb[NDA_MAX + 1]; | |
4781 | struct sk_buff *skb; | |
4782 | int brport_idx = 0; | |
4783 | u8 ndm_flags = 0; | |
4784 | int br_idx = 0; | |
4785 | u8 *addr = NULL; | |
4786 | u16 vid = 0; | |
4787 | int err; | |
4788 | ||
4789 | err = valid_fdb_get_strict(nlh, tb, &ndm_flags, &br_idx, | |
4790 | &brport_idx, &addr, &vid, extack); | |
4791 | if (err < 0) | |
4792 | return err; | |
4793 | ||
f989d03e NA |
4794 | if (!addr) { |
4795 | NL_SET_ERR_MSG(extack, "Missing lookup address for fdb get request"); | |
4796 | return -EINVAL; | |
4797 | } | |
4798 | ||
5b2f94b2 RP |
4799 | if (brport_idx) { |
4800 | dev = __dev_get_by_index(net, brport_idx); | |
4801 | if (!dev) { | |
4802 | NL_SET_ERR_MSG(extack, "Unknown device ifindex"); | |
4803 | return -ENODEV; | |
4804 | } | |
4805 | } | |
4806 | ||
4807 | if (br_idx) { | |
4808 | if (dev) { | |
4809 | NL_SET_ERR_MSG(extack, "Master and device are mutually exclusive"); | |
4810 | return -EINVAL; | |
4811 | } | |
4812 | ||
4813 | br_dev = __dev_get_by_index(net, br_idx); | |
4814 | if (!br_dev) { | |
4815 | NL_SET_ERR_MSG(extack, "Invalid master ifindex"); | |
4816 | return -EINVAL; | |
4817 | } | |
4818 | ops = br_dev->netdev_ops; | |
4819 | } | |
4820 | ||
4821 | if (dev) { | |
4822 | if (!ndm_flags || (ndm_flags & NTF_MASTER)) { | |
2e92a2d0 | 4823 | if (!netif_is_bridge_port(dev)) { |
5b2f94b2 RP |
4824 | NL_SET_ERR_MSG(extack, "Device is not a bridge port"); |
4825 | return -EINVAL; | |
4826 | } | |
4827 | br_dev = netdev_master_upper_dev_get(dev); | |
4828 | if (!br_dev) { | |
4829 | NL_SET_ERR_MSG(extack, "Master of device not found"); | |
4830 | return -EINVAL; | |
4831 | } | |
4832 | ops = br_dev->netdev_ops; | |
4833 | } else { | |
4834 | if (!(ndm_flags & NTF_SELF)) { | |
4835 | NL_SET_ERR_MSG(extack, "Missing NTF_SELF"); | |
4836 | return -EINVAL; | |
4837 | } | |
4838 | ops = dev->netdev_ops; | |
4839 | } | |
4840 | } | |
4841 | ||
4842 | if (!br_dev && !dev) { | |
4843 | NL_SET_ERR_MSG(extack, "No device specified"); | |
4844 | return -ENODEV; | |
4845 | } | |
4846 | ||
4847 | if (!ops || !ops->ndo_fdb_get) { | |
4848 | NL_SET_ERR_MSG(extack, "Fdb get operation not supported by device"); | |
4849 | return -EOPNOTSUPP; | |
4850 | } | |
4851 | ||
4852 | skb = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL); | |
4853 | if (!skb) | |
4854 | return -ENOBUFS; | |
4855 | ||
4856 | if (br_dev) | |
4857 | dev = br_dev; | |
4858 | err = ops->ndo_fdb_get(skb, tb, dev, addr, vid, | |
4859 | NETLINK_CB(in_skb).portid, | |
4860 | nlh->nlmsg_seq, extack); | |
4861 | if (err) | |
4862 | goto out; | |
4863 | ||
4864 | return rtnl_unicast(skb, net, NETLINK_CB(in_skb).portid); | |
4865 | out: | |
4866 | kfree_skb(skb); | |
4867 | return err; | |
4868 | } | |
4869 | ||
2c3c031c SF |
4870 | static int brport_nla_put_flag(struct sk_buff *skb, u32 flags, u32 mask, |
4871 | unsigned int attrnum, unsigned int flag) | |
4872 | { | |
4873 | if (mask & flag) | |
4874 | return nla_put_u8(skb, attrnum, !!(flags & flag)); | |
4875 | return 0; | |
4876 | } | |
4877 | ||
815cccbf | 4878 | int ndo_dflt_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq, |
2c3c031c | 4879 | struct net_device *dev, u16 mode, |
7d4f8d87 SF |
4880 | u32 flags, u32 mask, int nlflags, |
4881 | u32 filter_mask, | |
4882 | int (*vlan_fill)(struct sk_buff *skb, | |
4883 | struct net_device *dev, | |
4884 | u32 filter_mask)) | |
815cccbf JF |
4885 | { |
4886 | struct nlmsghdr *nlh; | |
4887 | struct ifinfomsg *ifm; | |
4888 | struct nlattr *br_afspec; | |
2c3c031c | 4889 | struct nlattr *protinfo; |
815cccbf | 4890 | u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN; |
898e5061 | 4891 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
7d4f8d87 | 4892 | int err = 0; |
815cccbf | 4893 | |
46c264da | 4894 | nlh = nlmsg_put(skb, pid, seq, RTM_NEWLINK, sizeof(*ifm), nlflags); |
815cccbf JF |
4895 | if (nlh == NULL) |
4896 | return -EMSGSIZE; | |
4897 | ||
4898 | ifm = nlmsg_data(nlh); | |
4899 | ifm->ifi_family = AF_BRIDGE; | |
4900 | ifm->__ifi_pad = 0; | |
4901 | ifm->ifi_type = dev->type; | |
4902 | ifm->ifi_index = dev->ifindex; | |
4903 | ifm->ifi_flags = dev_get_flags(dev); | |
4904 | ifm->ifi_change = 0; | |
4905 | ||
4906 | ||
4907 | if (nla_put_string(skb, IFLA_IFNAME, dev->name) || | |
4908 | nla_put_u32(skb, IFLA_MTU, dev->mtu) || | |
4909 | nla_put_u8(skb, IFLA_OPERSTATE, operstate) || | |
898e5061 JP |
4910 | (br_dev && |
4911 | nla_put_u32(skb, IFLA_MASTER, br_dev->ifindex)) || | |
815cccbf JF |
4912 | (dev->addr_len && |
4913 | nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) || | |
a54acb3a ND |
4914 | (dev->ifindex != dev_get_iflink(dev) && |
4915 | nla_put_u32(skb, IFLA_LINK, dev_get_iflink(dev)))) | |
815cccbf JF |
4916 | goto nla_put_failure; |
4917 | ||
ae0be8de | 4918 | br_afspec = nla_nest_start_noflag(skb, IFLA_AF_SPEC); |
815cccbf JF |
4919 | if (!br_afspec) |
4920 | goto nla_put_failure; | |
4921 | ||
1d460b98 | 4922 | if (nla_put_u16(skb, IFLA_BRIDGE_FLAGS, BRIDGE_FLAGS_SELF)) { |
815cccbf JF |
4923 | nla_nest_cancel(skb, br_afspec); |
4924 | goto nla_put_failure; | |
4925 | } | |
1d460b98 RP |
4926 | |
4927 | if (mode != BRIDGE_MODE_UNDEF) { | |
4928 | if (nla_put_u16(skb, IFLA_BRIDGE_MODE, mode)) { | |
4929 | nla_nest_cancel(skb, br_afspec); | |
4930 | goto nla_put_failure; | |
4931 | } | |
4932 | } | |
7d4f8d87 SF |
4933 | if (vlan_fill) { |
4934 | err = vlan_fill(skb, dev, filter_mask); | |
4935 | if (err) { | |
4936 | nla_nest_cancel(skb, br_afspec); | |
4937 | goto nla_put_failure; | |
4938 | } | |
4939 | } | |
815cccbf JF |
4940 | nla_nest_end(skb, br_afspec); |
4941 | ||
ae0be8de | 4942 | protinfo = nla_nest_start(skb, IFLA_PROTINFO); |
2c3c031c SF |
4943 | if (!protinfo) |
4944 | goto nla_put_failure; | |
4945 | ||
4946 | if (brport_nla_put_flag(skb, flags, mask, | |
4947 | IFLA_BRPORT_MODE, BR_HAIRPIN_MODE) || | |
4948 | brport_nla_put_flag(skb, flags, mask, | |
4949 | IFLA_BRPORT_GUARD, BR_BPDU_GUARD) || | |
4950 | brport_nla_put_flag(skb, flags, mask, | |
4951 | IFLA_BRPORT_FAST_LEAVE, | |
4952 | BR_MULTICAST_FAST_LEAVE) || | |
4953 | brport_nla_put_flag(skb, flags, mask, | |
4954 | IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK) || | |
4955 | brport_nla_put_flag(skb, flags, mask, | |
4956 | IFLA_BRPORT_LEARNING, BR_LEARNING) || | |
4957 | brport_nla_put_flag(skb, flags, mask, | |
4958 | IFLA_BRPORT_LEARNING_SYNC, BR_LEARNING_SYNC) || | |
4959 | brport_nla_put_flag(skb, flags, mask, | |
4960 | IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD) || | |
4961 | brport_nla_put_flag(skb, flags, mask, | |
583cb0b4 JW |
4962 | IFLA_BRPORT_PROXYARP, BR_PROXYARP) || |
4963 | brport_nla_put_flag(skb, flags, mask, | |
4964 | IFLA_BRPORT_MCAST_FLOOD, BR_MCAST_FLOOD) || | |
4965 | brport_nla_put_flag(skb, flags, mask, | |
4966 | IFLA_BRPORT_BCAST_FLOOD, BR_BCAST_FLOOD)) { | |
2c3c031c SF |
4967 | nla_nest_cancel(skb, protinfo); |
4968 | goto nla_put_failure; | |
4969 | } | |
4970 | ||
4971 | nla_nest_end(skb, protinfo); | |
4972 | ||
053c095a JB |
4973 | nlmsg_end(skb, nlh); |
4974 | return 0; | |
815cccbf JF |
4975 | nla_put_failure: |
4976 | nlmsg_cancel(skb, nlh); | |
7d4f8d87 | 4977 | return err ? err : -EMSGSIZE; |
815cccbf | 4978 | } |
7d4f8d87 | 4979 | EXPORT_SYMBOL_GPL(ndo_dflt_bridge_getlink); |
815cccbf | 4980 | |
2d011be8 DA |
4981 | static int valid_bridge_getlink_req(const struct nlmsghdr *nlh, |
4982 | bool strict_check, u32 *filter_mask, | |
4983 | struct netlink_ext_ack *extack) | |
4984 | { | |
4985 | struct nlattr *tb[IFLA_MAX+1]; | |
4986 | int err, i; | |
4987 | ||
4988 | if (strict_check) { | |
4989 | struct ifinfomsg *ifm; | |
4990 | ||
4991 | if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*ifm))) { | |
4992 | NL_SET_ERR_MSG(extack, "Invalid header for bridge link dump"); | |
4993 | return -EINVAL; | |
4994 | } | |
4995 | ||
4996 | ifm = nlmsg_data(nlh); | |
4997 | if (ifm->__ifi_pad || ifm->ifi_type || ifm->ifi_flags || | |
4998 | ifm->ifi_change || ifm->ifi_index) { | |
4999 | NL_SET_ERR_MSG(extack, "Invalid values in header for bridge link dump request"); | |
5000 | return -EINVAL; | |
5001 | } | |
5002 | ||
8cb08174 JB |
5003 | err = nlmsg_parse_deprecated_strict(nlh, |
5004 | sizeof(struct ifinfomsg), | |
5005 | tb, IFLA_MAX, ifla_policy, | |
5006 | extack); | |
2d011be8 | 5007 | } else { |
8cb08174 JB |
5008 | err = nlmsg_parse_deprecated(nlh, sizeof(struct ifinfomsg), |
5009 | tb, IFLA_MAX, ifla_policy, | |
5010 | extack); | |
2d011be8 DA |
5011 | } |
5012 | if (err < 0) | |
5013 | return err; | |
5014 | ||
5015 | /* new attributes should only be added with strict checking */ | |
5016 | for (i = 0; i <= IFLA_MAX; ++i) { | |
5017 | if (!tb[i]) | |
5018 | continue; | |
5019 | ||
5020 | switch (i) { | |
5021 | case IFLA_EXT_MASK: | |
5022 | *filter_mask = nla_get_u32(tb[i]); | |
5023 | break; | |
5024 | default: | |
5025 | if (strict_check) { | |
5026 | NL_SET_ERR_MSG(extack, "Unsupported attribute in bridge link dump request"); | |
5027 | return -EINVAL; | |
5028 | } | |
5029 | } | |
5030 | } | |
5031 | ||
5032 | return 0; | |
5033 | } | |
5034 | ||
e5a55a89 JF |
5035 | static int rtnl_bridge_getlink(struct sk_buff *skb, struct netlink_callback *cb) |
5036 | { | |
2d011be8 | 5037 | const struct nlmsghdr *nlh = cb->nlh; |
e5a55a89 JF |
5038 | struct net *net = sock_net(skb->sk); |
5039 | struct net_device *dev; | |
5040 | int idx = 0; | |
5041 | u32 portid = NETLINK_CB(cb->skb).portid; | |
2d011be8 | 5042 | u32 seq = nlh->nlmsg_seq; |
6cbdceeb | 5043 | u32 filter_mask = 0; |
d64f69b0 | 5044 | int err; |
6cbdceeb | 5045 | |
2d011be8 DA |
5046 | err = valid_bridge_getlink_req(nlh, cb->strict_check, &filter_mask, |
5047 | cb->extack); | |
5048 | if (err < 0 && cb->strict_check) | |
5049 | return err; | |
e5a55a89 JF |
5050 | |
5051 | rcu_read_lock(); | |
5052 | for_each_netdev_rcu(net, dev) { | |
5053 | const struct net_device_ops *ops = dev->netdev_ops; | |
898e5061 | 5054 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
e5a55a89 | 5055 | |
898e5061 | 5056 | if (br_dev && br_dev->netdev_ops->ndo_bridge_getlink) { |
d64f69b0 RP |
5057 | if (idx >= cb->args[0]) { |
5058 | err = br_dev->netdev_ops->ndo_bridge_getlink( | |
5059 | skb, portid, seq, dev, | |
5060 | filter_mask, NLM_F_MULTI); | |
f6c5775f DA |
5061 | if (err < 0 && err != -EOPNOTSUPP) { |
5062 | if (likely(skb->len)) | |
5063 | break; | |
5064 | ||
5065 | goto out_err; | |
5066 | } | |
d64f69b0 | 5067 | } |
25b1e679 | 5068 | idx++; |
e5a55a89 JF |
5069 | } |
5070 | ||
5071 | if (ops->ndo_bridge_getlink) { | |
d64f69b0 RP |
5072 | if (idx >= cb->args[0]) { |
5073 | err = ops->ndo_bridge_getlink(skb, portid, | |
5074 | seq, dev, | |
5075 | filter_mask, | |
5076 | NLM_F_MULTI); | |
f6c5775f DA |
5077 | if (err < 0 && err != -EOPNOTSUPP) { |
5078 | if (likely(skb->len)) | |
5079 | break; | |
5080 | ||
5081 | goto out_err; | |
5082 | } | |
d64f69b0 | 5083 | } |
25b1e679 | 5084 | idx++; |
e5a55a89 JF |
5085 | } |
5086 | } | |
f6c5775f DA |
5087 | err = skb->len; |
5088 | out_err: | |
e5a55a89 JF |
5089 | rcu_read_unlock(); |
5090 | cb->args[0] = idx; | |
5091 | ||
f6c5775f | 5092 | return err; |
e5a55a89 JF |
5093 | } |
5094 | ||
2469ffd7 JF |
5095 | static inline size_t bridge_nlmsg_size(void) |
5096 | { | |
5097 | return NLMSG_ALIGN(sizeof(struct ifinfomsg)) | |
5098 | + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */ | |
5099 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */ | |
5100 | + nla_total_size(sizeof(u32)) /* IFLA_MASTER */ | |
5101 | + nla_total_size(sizeof(u32)) /* IFLA_MTU */ | |
5102 | + nla_total_size(sizeof(u32)) /* IFLA_LINK */ | |
5103 | + nla_total_size(sizeof(u32)) /* IFLA_OPERSTATE */ | |
5104 | + nla_total_size(sizeof(u8)) /* IFLA_PROTINFO */ | |
5105 | + nla_total_size(sizeof(struct nlattr)) /* IFLA_AF_SPEC */ | |
5106 | + nla_total_size(sizeof(u16)) /* IFLA_BRIDGE_FLAGS */ | |
5107 | + nla_total_size(sizeof(u16)); /* IFLA_BRIDGE_MODE */ | |
5108 | } | |
5109 | ||
02dba438 | 5110 | static int rtnl_bridge_notify(struct net_device *dev) |
2469ffd7 JF |
5111 | { |
5112 | struct net *net = dev_net(dev); | |
2469ffd7 JF |
5113 | struct sk_buff *skb; |
5114 | int err = -EOPNOTSUPP; | |
5115 | ||
02dba438 RP |
5116 | if (!dev->netdev_ops->ndo_bridge_getlink) |
5117 | return 0; | |
5118 | ||
2469ffd7 JF |
5119 | skb = nlmsg_new(bridge_nlmsg_size(), GFP_ATOMIC); |
5120 | if (!skb) { | |
5121 | err = -ENOMEM; | |
5122 | goto errout; | |
5123 | } | |
5124 | ||
46c264da | 5125 | err = dev->netdev_ops->ndo_bridge_getlink(skb, 0, 0, dev, 0, 0); |
02dba438 RP |
5126 | if (err < 0) |
5127 | goto errout; | |
2469ffd7 | 5128 | |
d2e381c4 IS |
5129 | /* Notification info is only filled for bridge ports, not the bridge |
5130 | * device itself. Therefore, a zero notification length is valid and | |
5131 | * should not result in an error. | |
5132 | */ | |
5133 | if (!skb->len) | |
59ccaaaa RP |
5134 | goto errout; |
5135 | ||
2469ffd7 JF |
5136 | rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC); |
5137 | return 0; | |
5138 | errout: | |
5139 | WARN_ON(err == -EMSGSIZE); | |
5140 | kfree_skb(skb); | |
59ccaaaa RP |
5141 | if (err) |
5142 | rtnl_set_sk_err(net, RTNLGRP_LINK, err); | |
2469ffd7 JF |
5143 | return err; |
5144 | } | |
5145 | ||
c21ef3e3 DA |
5146 | static int rtnl_bridge_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, |
5147 | struct netlink_ext_ack *extack) | |
e5a55a89 JF |
5148 | { |
5149 | struct net *net = sock_net(skb->sk); | |
5150 | struct ifinfomsg *ifm; | |
5151 | struct net_device *dev; | |
743ad091 | 5152 | struct nlattr *br_spec, *attr, *br_flags_attr = NULL; |
2469ffd7 | 5153 | int rem, err = -EOPNOTSUPP; |
4de8b413 | 5154 | u16 flags = 0; |
e5a55a89 JF |
5155 | |
5156 | if (nlmsg_len(nlh) < sizeof(*ifm)) | |
5157 | return -EINVAL; | |
5158 | ||
5159 | ifm = nlmsg_data(nlh); | |
5160 | if (ifm->ifi_family != AF_BRIDGE) | |
5161 | return -EPFNOSUPPORT; | |
5162 | ||
5163 | dev = __dev_get_by_index(net, ifm->ifi_index); | |
5164 | if (!dev) { | |
b88d12e4 | 5165 | NL_SET_ERR_MSG(extack, "unknown ifindex"); |
e5a55a89 JF |
5166 | return -ENODEV; |
5167 | } | |
5168 | ||
2469ffd7 JF |
5169 | br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); |
5170 | if (br_spec) { | |
5171 | nla_for_each_nested(attr, br_spec, rem) { | |
743ad091 | 5172 | if (nla_type(attr) == IFLA_BRIDGE_FLAGS && !br_flags_attr) { |
6e8d1c55 TG |
5173 | if (nla_len(attr) < sizeof(flags)) |
5174 | return -EINVAL; | |
5175 | ||
743ad091 | 5176 | br_flags_attr = attr; |
2469ffd7 | 5177 | flags = nla_get_u16(attr); |
d73ef2d6 LM |
5178 | } |
5179 | ||
5180 | if (nla_type(attr) == IFLA_BRIDGE_MODE) { | |
5181 | if (nla_len(attr) < sizeof(u16)) | |
5182 | return -EINVAL; | |
2469ffd7 JF |
5183 | } |
5184 | } | |
5185 | } | |
5186 | ||
5187 | if (!flags || (flags & BRIDGE_FLAGS_MASTER)) { | |
898e5061 JP |
5188 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); |
5189 | ||
5190 | if (!br_dev || !br_dev->netdev_ops->ndo_bridge_setlink) { | |
2469ffd7 JF |
5191 | err = -EOPNOTSUPP; |
5192 | goto out; | |
5193 | } | |
5194 | ||
2fd527b7 PM |
5195 | err = br_dev->netdev_ops->ndo_bridge_setlink(dev, nlh, flags, |
5196 | extack); | |
e5a55a89 JF |
5197 | if (err) |
5198 | goto out; | |
2469ffd7 JF |
5199 | |
5200 | flags &= ~BRIDGE_FLAGS_MASTER; | |
e5a55a89 JF |
5201 | } |
5202 | ||
2469ffd7 JF |
5203 | if ((flags & BRIDGE_FLAGS_SELF)) { |
5204 | if (!dev->netdev_ops->ndo_bridge_setlink) | |
5205 | err = -EOPNOTSUPP; | |
5206 | else | |
add511b3 | 5207 | err = dev->netdev_ops->ndo_bridge_setlink(dev, nlh, |
2fd527b7 PM |
5208 | flags, |
5209 | extack); | |
02dba438 | 5210 | if (!err) { |
2469ffd7 | 5211 | flags &= ~BRIDGE_FLAGS_SELF; |
02dba438 RP |
5212 | |
5213 | /* Generate event to notify upper layer of bridge | |
5214 | * change | |
5215 | */ | |
5216 | err = rtnl_bridge_notify(dev); | |
5217 | } | |
2469ffd7 | 5218 | } |
e5a55a89 | 5219 | |
743ad091 LM |
5220 | if (br_flags_attr) |
5221 | memcpy(nla_data(br_flags_attr), &flags, sizeof(flags)); | |
e5a55a89 JF |
5222 | out: |
5223 | return err; | |
5224 | } | |
5225 | ||
c21ef3e3 DA |
5226 | static int rtnl_bridge_dellink(struct sk_buff *skb, struct nlmsghdr *nlh, |
5227 | struct netlink_ext_ack *extack) | |
407af329 VY |
5228 | { |
5229 | struct net *net = sock_net(skb->sk); | |
5230 | struct ifinfomsg *ifm; | |
5231 | struct net_device *dev; | |
5232 | struct nlattr *br_spec, *attr = NULL; | |
5233 | int rem, err = -EOPNOTSUPP; | |
4de8b413 | 5234 | u16 flags = 0; |
407af329 VY |
5235 | bool have_flags = false; |
5236 | ||
5237 | if (nlmsg_len(nlh) < sizeof(*ifm)) | |
5238 | return -EINVAL; | |
5239 | ||
5240 | ifm = nlmsg_data(nlh); | |
5241 | if (ifm->ifi_family != AF_BRIDGE) | |
5242 | return -EPFNOSUPPORT; | |
5243 | ||
5244 | dev = __dev_get_by_index(net, ifm->ifi_index); | |
5245 | if (!dev) { | |
b88d12e4 | 5246 | NL_SET_ERR_MSG(extack, "unknown ifindex"); |
407af329 VY |
5247 | return -ENODEV; |
5248 | } | |
5249 | ||
5250 | br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); | |
5251 | if (br_spec) { | |
e8058a49 JB |
5252 | nla_for_each_nested_type(attr, IFLA_BRIDGE_FLAGS, br_spec, |
5253 | rem) { | |
5254 | if (nla_len(attr) < sizeof(flags)) | |
5255 | return -EINVAL; | |
6e8d1c55 | 5256 | |
e8058a49 JB |
5257 | have_flags = true; |
5258 | flags = nla_get_u16(attr); | |
5259 | break; | |
407af329 VY |
5260 | } |
5261 | } | |
5262 | ||
407af329 VY |
5263 | if (!flags || (flags & BRIDGE_FLAGS_MASTER)) { |
5264 | struct net_device *br_dev = netdev_master_upper_dev_get(dev); | |
5265 | ||
5266 | if (!br_dev || !br_dev->netdev_ops->ndo_bridge_dellink) { | |
5267 | err = -EOPNOTSUPP; | |
5268 | goto out; | |
5269 | } | |
5270 | ||
add511b3 | 5271 | err = br_dev->netdev_ops->ndo_bridge_dellink(dev, nlh, flags); |
407af329 VY |
5272 | if (err) |
5273 | goto out; | |
5274 | ||
5275 | flags &= ~BRIDGE_FLAGS_MASTER; | |
5276 | } | |
5277 | ||
5278 | if ((flags & BRIDGE_FLAGS_SELF)) { | |
5279 | if (!dev->netdev_ops->ndo_bridge_dellink) | |
5280 | err = -EOPNOTSUPP; | |
5281 | else | |
add511b3 RP |
5282 | err = dev->netdev_ops->ndo_bridge_dellink(dev, nlh, |
5283 | flags); | |
407af329 | 5284 | |
02dba438 | 5285 | if (!err) { |
407af329 | 5286 | flags &= ~BRIDGE_FLAGS_SELF; |
02dba438 RP |
5287 | |
5288 | /* Generate event to notify upper layer of bridge | |
5289 | * change | |
5290 | */ | |
5291 | err = rtnl_bridge_notify(dev); | |
5292 | } | |
407af329 VY |
5293 | } |
5294 | ||
5295 | if (have_flags) | |
5296 | memcpy(nla_data(attr), &flags, sizeof(flags)); | |
407af329 VY |
5297 | out: |
5298 | return err; | |
5299 | } | |
5300 | ||
e8872a25 NA |
5301 | static bool stats_attr_valid(unsigned int mask, int attrid, int idxattr) |
5302 | { | |
5303 | return (mask & IFLA_STATS_FILTER_BIT(attrid)) && | |
5304 | (!idxattr || idxattr == attrid); | |
5305 | } | |
5306 | ||
f6e0fb81 PM |
5307 | static bool |
5308 | rtnl_offload_xstats_have_ndo(const struct net_device *dev, int attr_id) | |
69ae6ad2 | 5309 | { |
f6e0fb81 PM |
5310 | return dev->netdev_ops && |
5311 | dev->netdev_ops->ndo_has_offload_stats && | |
5312 | dev->netdev_ops->ndo_get_offload_stats && | |
5313 | dev->netdev_ops->ndo_has_offload_stats(dev, attr_id); | |
5314 | } | |
69ae6ad2 | 5315 | |
f6e0fb81 PM |
5316 | static unsigned int |
5317 | rtnl_offload_xstats_get_size_ndo(const struct net_device *dev, int attr_id) | |
5318 | { | |
5319 | return rtnl_offload_xstats_have_ndo(dev, attr_id) ? | |
5320 | sizeof(struct rtnl_link_stats64) : 0; | |
69ae6ad2 NF |
5321 | } |
5322 | ||
f6e0fb81 PM |
5323 | static int |
5324 | rtnl_offload_xstats_fill_ndo(struct net_device *dev, int attr_id, | |
5325 | struct sk_buff *skb) | |
69ae6ad2 | 5326 | { |
f6e0fb81 | 5327 | unsigned int size = rtnl_offload_xstats_get_size_ndo(dev, attr_id); |
69ae6ad2 | 5328 | struct nlattr *attr = NULL; |
69ae6ad2 NF |
5329 | void *attr_data; |
5330 | int err; | |
5331 | ||
f6e0fb81 | 5332 | if (!size) |
69ae6ad2 NF |
5333 | return -ENODATA; |
5334 | ||
f6e0fb81 PM |
5335 | attr = nla_reserve_64bit(skb, attr_id, size, |
5336 | IFLA_OFFLOAD_XSTATS_UNSPEC); | |
5337 | if (!attr) | |
5338 | return -EMSGSIZE; | |
69ae6ad2 | 5339 | |
f6e0fb81 PM |
5340 | attr_data = nla_data(attr); |
5341 | memset(attr_data, 0, size); | |
69ae6ad2 | 5342 | |
f6e0fb81 PM |
5343 | err = dev->netdev_ops->ndo_get_offload_stats(attr_id, dev, attr_data); |
5344 | if (err) | |
5345 | return err; | |
69ae6ad2 | 5346 | |
f6e0fb81 PM |
5347 | return 0; |
5348 | } | |
69ae6ad2 | 5349 | |
0e7788fd PM |
5350 | static unsigned int |
5351 | rtnl_offload_xstats_get_size_stats(const struct net_device *dev, | |
5352 | enum netdev_offload_xstats_type type) | |
5353 | { | |
5354 | bool enabled = netdev_offload_xstats_enabled(dev, type); | |
5355 | ||
5356 | return enabled ? sizeof(struct rtnl_hw_stats64) : 0; | |
5357 | } | |
5358 | ||
5359 | struct rtnl_offload_xstats_request_used { | |
5360 | bool request; | |
5361 | bool used; | |
5362 | }; | |
5363 | ||
5364 | static int | |
5365 | rtnl_offload_xstats_get_stats(struct net_device *dev, | |
5366 | enum netdev_offload_xstats_type type, | |
5367 | struct rtnl_offload_xstats_request_used *ru, | |
5368 | struct rtnl_hw_stats64 *stats, | |
5369 | struct netlink_ext_ack *extack) | |
5370 | { | |
5371 | bool request; | |
5372 | bool used; | |
5373 | int err; | |
5374 | ||
5375 | request = netdev_offload_xstats_enabled(dev, type); | |
5376 | if (!request) { | |
5377 | used = false; | |
5378 | goto out; | |
5379 | } | |
5380 | ||
5381 | err = netdev_offload_xstats_get(dev, type, stats, &used, extack); | |
5382 | if (err) | |
5383 | return err; | |
5384 | ||
5385 | out: | |
5386 | if (ru) { | |
5387 | ru->request = request; | |
5388 | ru->used = used; | |
5389 | } | |
5390 | return 0; | |
5391 | } | |
5392 | ||
5393 | static int | |
5394 | rtnl_offload_xstats_fill_hw_s_info_one(struct sk_buff *skb, int attr_id, | |
5395 | struct rtnl_offload_xstats_request_used *ru) | |
5396 | { | |
5397 | struct nlattr *nest; | |
5398 | ||
5399 | nest = nla_nest_start(skb, attr_id); | |
5400 | if (!nest) | |
5401 | return -EMSGSIZE; | |
5402 | ||
5403 | if (nla_put_u8(skb, IFLA_OFFLOAD_XSTATS_HW_S_INFO_REQUEST, ru->request)) | |
5404 | goto nla_put_failure; | |
5405 | ||
5406 | if (nla_put_u8(skb, IFLA_OFFLOAD_XSTATS_HW_S_INFO_USED, ru->used)) | |
5407 | goto nla_put_failure; | |
5408 | ||
5409 | nla_nest_end(skb, nest); | |
5410 | return 0; | |
5411 | ||
5412 | nla_put_failure: | |
5413 | nla_nest_cancel(skb, nest); | |
5414 | return -EMSGSIZE; | |
5415 | } | |
5416 | ||
5417 | static int | |
5418 | rtnl_offload_xstats_fill_hw_s_info(struct sk_buff *skb, struct net_device *dev, | |
5419 | struct netlink_ext_ack *extack) | |
5420 | { | |
5421 | enum netdev_offload_xstats_type t_l3 = NETDEV_OFFLOAD_XSTATS_TYPE_L3; | |
5422 | struct rtnl_offload_xstats_request_used ru_l3; | |
5423 | struct nlattr *nest; | |
5424 | int err; | |
5425 | ||
5426 | err = rtnl_offload_xstats_get_stats(dev, t_l3, &ru_l3, NULL, extack); | |
5427 | if (err) | |
5428 | return err; | |
5429 | ||
5430 | nest = nla_nest_start(skb, IFLA_OFFLOAD_XSTATS_HW_S_INFO); | |
5431 | if (!nest) | |
5432 | return -EMSGSIZE; | |
5433 | ||
5434 | if (rtnl_offload_xstats_fill_hw_s_info_one(skb, | |
5435 | IFLA_OFFLOAD_XSTATS_L3_STATS, | |
5436 | &ru_l3)) | |
5437 | goto nla_put_failure; | |
5438 | ||
5439 | nla_nest_end(skb, nest); | |
5440 | return 0; | |
5441 | ||
5442 | nla_put_failure: | |
5443 | nla_nest_cancel(skb, nest); | |
5444 | return -EMSGSIZE; | |
5445 | } | |
5446 | ||
f6e0fb81 | 5447 | static int rtnl_offload_xstats_fill(struct sk_buff *skb, struct net_device *dev, |
05415bcc PM |
5448 | int *prividx, u32 off_filter_mask, |
5449 | struct netlink_ext_ack *extack) | |
f6e0fb81 | 5450 | { |
0e7788fd PM |
5451 | enum netdev_offload_xstats_type t_l3 = NETDEV_OFFLOAD_XSTATS_TYPE_L3; |
5452 | int attr_id_hw_s_info = IFLA_OFFLOAD_XSTATS_HW_S_INFO; | |
5453 | int attr_id_l3_stats = IFLA_OFFLOAD_XSTATS_L3_STATS; | |
f6e0fb81 PM |
5454 | int attr_id_cpu_hit = IFLA_OFFLOAD_XSTATS_CPU_HIT; |
5455 | bool have_data = false; | |
5456 | int err; | |
5457 | ||
46efc97b PM |
5458 | if (*prividx <= attr_id_cpu_hit && |
5459 | (off_filter_mask & | |
5460 | IFLA_STATS_FILTER_BIT(attr_id_cpu_hit))) { | |
f6e0fb81 PM |
5461 | err = rtnl_offload_xstats_fill_ndo(dev, attr_id_cpu_hit, skb); |
5462 | if (!err) { | |
5463 | have_data = true; | |
5464 | } else if (err != -ENODATA) { | |
5465 | *prividx = attr_id_cpu_hit; | |
5466 | return err; | |
5467 | } | |
69ae6ad2 NF |
5468 | } |
5469 | ||
0e7788fd PM |
5470 | if (*prividx <= attr_id_hw_s_info && |
5471 | (off_filter_mask & IFLA_STATS_FILTER_BIT(attr_id_hw_s_info))) { | |
5472 | *prividx = attr_id_hw_s_info; | |
5473 | ||
5474 | err = rtnl_offload_xstats_fill_hw_s_info(skb, dev, extack); | |
5475 | if (err) | |
5476 | return err; | |
5477 | ||
5478 | have_data = true; | |
5479 | *prividx = 0; | |
5480 | } | |
5481 | ||
5482 | if (*prividx <= attr_id_l3_stats && | |
5483 | (off_filter_mask & IFLA_STATS_FILTER_BIT(attr_id_l3_stats))) { | |
5484 | unsigned int size_l3; | |
5485 | struct nlattr *attr; | |
5486 | ||
5487 | *prividx = attr_id_l3_stats; | |
5488 | ||
5489 | size_l3 = rtnl_offload_xstats_get_size_stats(dev, t_l3); | |
23cfe941 PM |
5490 | if (!size_l3) |
5491 | goto skip_l3_stats; | |
0e7788fd PM |
5492 | attr = nla_reserve_64bit(skb, attr_id_l3_stats, size_l3, |
5493 | IFLA_OFFLOAD_XSTATS_UNSPEC); | |
5494 | if (!attr) | |
5495 | return -EMSGSIZE; | |
5496 | ||
5497 | err = rtnl_offload_xstats_get_stats(dev, t_l3, NULL, | |
5498 | nla_data(attr), extack); | |
5499 | if (err) | |
5500 | return err; | |
5501 | ||
5502 | have_data = true; | |
23cfe941 | 5503 | skip_l3_stats: |
0e7788fd PM |
5504 | *prividx = 0; |
5505 | } | |
5506 | ||
f6e0fb81 | 5507 | if (!have_data) |
69ae6ad2 NF |
5508 | return -ENODATA; |
5509 | ||
5510 | *prividx = 0; | |
5511 | return 0; | |
69ae6ad2 NF |
5512 | } |
5513 | ||
0e7788fd PM |
5514 | static unsigned int |
5515 | rtnl_offload_xstats_get_size_hw_s_info_one(const struct net_device *dev, | |
5516 | enum netdev_offload_xstats_type type) | |
5517 | { | |
0e7788fd PM |
5518 | return nla_total_size(0) + |
5519 | /* IFLA_OFFLOAD_XSTATS_HW_S_INFO_REQUEST */ | |
5520 | nla_total_size(sizeof(u8)) + | |
5521 | /* IFLA_OFFLOAD_XSTATS_HW_S_INFO_USED */ | |
503930f8 | 5522 | nla_total_size(sizeof(u8)) + |
0e7788fd PM |
5523 | 0; |
5524 | } | |
5525 | ||
5526 | static unsigned int | |
5527 | rtnl_offload_xstats_get_size_hw_s_info(const struct net_device *dev) | |
5528 | { | |
5529 | enum netdev_offload_xstats_type t_l3 = NETDEV_OFFLOAD_XSTATS_TYPE_L3; | |
5530 | ||
5531 | return nla_total_size(0) + | |
5532 | /* IFLA_OFFLOAD_XSTATS_L3_STATS */ | |
5533 | rtnl_offload_xstats_get_size_hw_s_info_one(dev, t_l3) + | |
5534 | 0; | |
5535 | } | |
5536 | ||
46efc97b PM |
5537 | static int rtnl_offload_xstats_get_size(const struct net_device *dev, |
5538 | u32 off_filter_mask) | |
69ae6ad2 | 5539 | { |
0e7788fd | 5540 | enum netdev_offload_xstats_type t_l3 = NETDEV_OFFLOAD_XSTATS_TYPE_L3; |
f6e0fb81 | 5541 | int attr_id_cpu_hit = IFLA_OFFLOAD_XSTATS_CPU_HIT; |
69ae6ad2 | 5542 | int nla_size = 0; |
69ae6ad2 NF |
5543 | int size; |
5544 | ||
46efc97b PM |
5545 | if (off_filter_mask & |
5546 | IFLA_STATS_FILTER_BIT(attr_id_cpu_hit)) { | |
5547 | size = rtnl_offload_xstats_get_size_ndo(dev, attr_id_cpu_hit); | |
5548 | nla_size += nla_total_size_64bit(size); | |
5549 | } | |
69ae6ad2 | 5550 | |
0e7788fd PM |
5551 | if (off_filter_mask & |
5552 | IFLA_STATS_FILTER_BIT(IFLA_OFFLOAD_XSTATS_HW_S_INFO)) | |
5553 | nla_size += rtnl_offload_xstats_get_size_hw_s_info(dev); | |
5554 | ||
5555 | if (off_filter_mask & | |
5556 | IFLA_STATS_FILTER_BIT(IFLA_OFFLOAD_XSTATS_L3_STATS)) { | |
5557 | size = rtnl_offload_xstats_get_size_stats(dev, t_l3); | |
5558 | nla_size += nla_total_size_64bit(size); | |
5559 | } | |
5560 | ||
69ae6ad2 NF |
5561 | if (nla_size != 0) |
5562 | nla_size += nla_total_size(0); | |
5563 | ||
5564 | return nla_size; | |
5565 | } | |
5566 | ||
46efc97b PM |
5567 | struct rtnl_stats_dump_filters { |
5568 | /* mask[0] filters outer attributes. Then individual nests have their | |
5569 | * filtering mask at the index of the nested attribute. | |
5570 | */ | |
5571 | u32 mask[IFLA_STATS_MAX + 1]; | |
5572 | }; | |
5573 | ||
10c9ead9 RP |
5574 | static int rtnl_fill_statsinfo(struct sk_buff *skb, struct net_device *dev, |
5575 | int type, u32 pid, u32 seq, u32 change, | |
46efc97b PM |
5576 | unsigned int flags, |
5577 | const struct rtnl_stats_dump_filters *filters, | |
05415bcc PM |
5578 | int *idxattr, int *prividx, |
5579 | struct netlink_ext_ack *extack) | |
10c9ead9 | 5580 | { |
46efc97b | 5581 | unsigned int filter_mask = filters->mask[0]; |
10c9ead9 RP |
5582 | struct if_stats_msg *ifsm; |
5583 | struct nlmsghdr *nlh; | |
5584 | struct nlattr *attr; | |
e8872a25 | 5585 | int s_prividx = *prividx; |
69ae6ad2 | 5586 | int err; |
10c9ead9 RP |
5587 | |
5588 | ASSERT_RTNL(); | |
5589 | ||
5590 | nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ifsm), flags); | |
5591 | if (!nlh) | |
5592 | return -EMSGSIZE; | |
5593 | ||
5594 | ifsm = nlmsg_data(nlh); | |
ce024f42 NA |
5595 | ifsm->family = PF_UNSPEC; |
5596 | ifsm->pad1 = 0; | |
5597 | ifsm->pad2 = 0; | |
10c9ead9 RP |
5598 | ifsm->ifindex = dev->ifindex; |
5599 | ifsm->filter_mask = filter_mask; | |
5600 | ||
e8872a25 | 5601 | if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_64, *idxattr)) { |
10c9ead9 | 5602 | struct rtnl_link_stats64 *sp; |
10c9ead9 | 5603 | |
58414d32 ND |
5604 | attr = nla_reserve_64bit(skb, IFLA_STATS_LINK_64, |
5605 | sizeof(struct rtnl_link_stats64), | |
5606 | IFLA_STATS_UNSPEC); | |
216e6906 PM |
5607 | if (!attr) { |
5608 | err = -EMSGSIZE; | |
10c9ead9 | 5609 | goto nla_put_failure; |
216e6906 | 5610 | } |
10c9ead9 RP |
5611 | |
5612 | sp = nla_data(attr); | |
5613 | dev_get_stats(dev, sp); | |
5614 | } | |
5615 | ||
97a47fac NA |
5616 | if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_XSTATS, *idxattr)) { |
5617 | const struct rtnl_link_ops *ops = dev->rtnl_link_ops; | |
5618 | ||
5619 | if (ops && ops->fill_linkxstats) { | |
97a47fac | 5620 | *idxattr = IFLA_STATS_LINK_XSTATS; |
ae0be8de MK |
5621 | attr = nla_nest_start_noflag(skb, |
5622 | IFLA_STATS_LINK_XSTATS); | |
216e6906 PM |
5623 | if (!attr) { |
5624 | err = -EMSGSIZE; | |
97a47fac | 5625 | goto nla_put_failure; |
216e6906 | 5626 | } |
97a47fac | 5627 | |
80e73cc5 NA |
5628 | err = ops->fill_linkxstats(skb, dev, prividx, *idxattr); |
5629 | nla_nest_end(skb, attr); | |
5630 | if (err) | |
5631 | goto nla_put_failure; | |
5632 | *idxattr = 0; | |
5633 | } | |
5634 | } | |
5635 | ||
5636 | if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_XSTATS_SLAVE, | |
5637 | *idxattr)) { | |
5638 | const struct rtnl_link_ops *ops = NULL; | |
5639 | const struct net_device *master; | |
5640 | ||
5641 | master = netdev_master_upper_dev_get(dev); | |
5642 | if (master) | |
5643 | ops = master->rtnl_link_ops; | |
5644 | if (ops && ops->fill_linkxstats) { | |
80e73cc5 | 5645 | *idxattr = IFLA_STATS_LINK_XSTATS_SLAVE; |
ae0be8de MK |
5646 | attr = nla_nest_start_noflag(skb, |
5647 | IFLA_STATS_LINK_XSTATS_SLAVE); | |
216e6906 PM |
5648 | if (!attr) { |
5649 | err = -EMSGSIZE; | |
80e73cc5 | 5650 | goto nla_put_failure; |
216e6906 | 5651 | } |
80e73cc5 NA |
5652 | |
5653 | err = ops->fill_linkxstats(skb, dev, prividx, *idxattr); | |
97a47fac NA |
5654 | nla_nest_end(skb, attr); |
5655 | if (err) | |
5656 | goto nla_put_failure; | |
5657 | *idxattr = 0; | |
5658 | } | |
5659 | } | |
5660 | ||
69ae6ad2 NF |
5661 | if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_OFFLOAD_XSTATS, |
5662 | *idxattr)) { | |
46efc97b PM |
5663 | u32 off_filter_mask; |
5664 | ||
5665 | off_filter_mask = filters->mask[IFLA_STATS_LINK_OFFLOAD_XSTATS]; | |
69ae6ad2 | 5666 | *idxattr = IFLA_STATS_LINK_OFFLOAD_XSTATS; |
ae0be8de MK |
5667 | attr = nla_nest_start_noflag(skb, |
5668 | IFLA_STATS_LINK_OFFLOAD_XSTATS); | |
216e6906 PM |
5669 | if (!attr) { |
5670 | err = -EMSGSIZE; | |
69ae6ad2 | 5671 | goto nla_put_failure; |
216e6906 | 5672 | } |
69ae6ad2 | 5673 | |
46efc97b | 5674 | err = rtnl_offload_xstats_fill(skb, dev, prividx, |
05415bcc | 5675 | off_filter_mask, extack); |
69ae6ad2 NF |
5676 | if (err == -ENODATA) |
5677 | nla_nest_cancel(skb, attr); | |
5678 | else | |
5679 | nla_nest_end(skb, attr); | |
5680 | ||
5681 | if (err && err != -ENODATA) | |
5682 | goto nla_put_failure; | |
5683 | *idxattr = 0; | |
5684 | } | |
5685 | ||
aefb4d4a RS |
5686 | if (stats_attr_valid(filter_mask, IFLA_STATS_AF_SPEC, *idxattr)) { |
5687 | struct rtnl_af_ops *af_ops; | |
5688 | ||
5689 | *idxattr = IFLA_STATS_AF_SPEC; | |
ae0be8de | 5690 | attr = nla_nest_start_noflag(skb, IFLA_STATS_AF_SPEC); |
216e6906 PM |
5691 | if (!attr) { |
5692 | err = -EMSGSIZE; | |
aefb4d4a | 5693 | goto nla_put_failure; |
216e6906 | 5694 | } |
aefb4d4a | 5695 | |
5fa85a09 FW |
5696 | rcu_read_lock(); |
5697 | list_for_each_entry_rcu(af_ops, &rtnl_af_ops, list) { | |
aefb4d4a RS |
5698 | if (af_ops->fill_stats_af) { |
5699 | struct nlattr *af; | |
aefb4d4a | 5700 | |
ae0be8de MK |
5701 | af = nla_nest_start_noflag(skb, |
5702 | af_ops->family); | |
5fa85a09 FW |
5703 | if (!af) { |
5704 | rcu_read_unlock(); | |
57d29a29 | 5705 | err = -EMSGSIZE; |
aefb4d4a | 5706 | goto nla_put_failure; |
5fa85a09 | 5707 | } |
aefb4d4a RS |
5708 | err = af_ops->fill_stats_af(skb, dev); |
5709 | ||
5fa85a09 | 5710 | if (err == -ENODATA) { |
aefb4d4a | 5711 | nla_nest_cancel(skb, af); |
5fa85a09 FW |
5712 | } else if (err < 0) { |
5713 | rcu_read_unlock(); | |
aefb4d4a | 5714 | goto nla_put_failure; |
5fa85a09 | 5715 | } |
aefb4d4a RS |
5716 | |
5717 | nla_nest_end(skb, af); | |
5718 | } | |
5719 | } | |
5fa85a09 | 5720 | rcu_read_unlock(); |
aefb4d4a RS |
5721 | |
5722 | nla_nest_end(skb, attr); | |
5723 | ||
5724 | *idxattr = 0; | |
5725 | } | |
5726 | ||
10c9ead9 RP |
5727 | nlmsg_end(skb, nlh); |
5728 | ||
5729 | return 0; | |
5730 | ||
5731 | nla_put_failure: | |
e8872a25 NA |
5732 | /* not a multi message or no progress mean a real error */ |
5733 | if (!(flags & NLM_F_MULTI) || s_prividx == *prividx) | |
5734 | nlmsg_cancel(skb, nlh); | |
5735 | else | |
5736 | nlmsg_end(skb, nlh); | |
10c9ead9 | 5737 | |
216e6906 | 5738 | return err; |
10c9ead9 RP |
5739 | } |
5740 | ||
10c9ead9 | 5741 | static size_t if_nlmsg_stats_size(const struct net_device *dev, |
46efc97b | 5742 | const struct rtnl_stats_dump_filters *filters) |
10c9ead9 | 5743 | { |
d3436799 | 5744 | size_t size = NLMSG_ALIGN(sizeof(struct if_stats_msg)); |
46efc97b | 5745 | unsigned int filter_mask = filters->mask[0]; |
10c9ead9 | 5746 | |
e8872a25 | 5747 | if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_64, 0)) |
10c9ead9 RP |
5748 | size += nla_total_size_64bit(sizeof(struct rtnl_link_stats64)); |
5749 | ||
97a47fac NA |
5750 | if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_XSTATS, 0)) { |
5751 | const struct rtnl_link_ops *ops = dev->rtnl_link_ops; | |
80e73cc5 | 5752 | int attr = IFLA_STATS_LINK_XSTATS; |
97a47fac NA |
5753 | |
5754 | if (ops && ops->get_linkxstats_size) { | |
80e73cc5 NA |
5755 | size += nla_total_size(ops->get_linkxstats_size(dev, |
5756 | attr)); | |
97a47fac NA |
5757 | /* for IFLA_STATS_LINK_XSTATS */ |
5758 | size += nla_total_size(0); | |
5759 | } | |
5760 | } | |
5761 | ||
80e73cc5 NA |
5762 | if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_XSTATS_SLAVE, 0)) { |
5763 | struct net_device *_dev = (struct net_device *)dev; | |
5764 | const struct rtnl_link_ops *ops = NULL; | |
5765 | const struct net_device *master; | |
5766 | ||
5767 | /* netdev_master_upper_dev_get can't take const */ | |
5768 | master = netdev_master_upper_dev_get(_dev); | |
5769 | if (master) | |
5770 | ops = master->rtnl_link_ops; | |
5771 | if (ops && ops->get_linkxstats_size) { | |
5772 | int attr = IFLA_STATS_LINK_XSTATS_SLAVE; | |
5773 | ||
5774 | size += nla_total_size(ops->get_linkxstats_size(dev, | |
5775 | attr)); | |
5776 | /* for IFLA_STATS_LINK_XSTATS_SLAVE */ | |
5777 | size += nla_total_size(0); | |
5778 | } | |
5779 | } | |
5780 | ||
46efc97b PM |
5781 | if (stats_attr_valid(filter_mask, IFLA_STATS_LINK_OFFLOAD_XSTATS, 0)) { |
5782 | u32 off_filter_mask; | |
5783 | ||
5784 | off_filter_mask = filters->mask[IFLA_STATS_LINK_OFFLOAD_XSTATS]; | |
5785 | size += rtnl_offload_xstats_get_size(dev, off_filter_mask); | |
5786 | } | |
69ae6ad2 | 5787 | |
aefb4d4a RS |
5788 | if (stats_attr_valid(filter_mask, IFLA_STATS_AF_SPEC, 0)) { |
5789 | struct rtnl_af_ops *af_ops; | |
5790 | ||
5791 | /* for IFLA_STATS_AF_SPEC */ | |
5792 | size += nla_total_size(0); | |
5793 | ||
5fa85a09 FW |
5794 | rcu_read_lock(); |
5795 | list_for_each_entry_rcu(af_ops, &rtnl_af_ops, list) { | |
aefb4d4a RS |
5796 | if (af_ops->get_stats_af_size) { |
5797 | size += nla_total_size( | |
5798 | af_ops->get_stats_af_size(dev)); | |
5799 | ||
5800 | /* for AF_* */ | |
5801 | size += nla_total_size(0); | |
5802 | } | |
5803 | } | |
5fa85a09 | 5804 | rcu_read_unlock(); |
aefb4d4a RS |
5805 | } |
5806 | ||
10c9ead9 RP |
5807 | return size; |
5808 | } | |
5809 | ||
46efc97b PM |
5810 | #define RTNL_STATS_OFFLOAD_XSTATS_VALID ((1 << __IFLA_OFFLOAD_XSTATS_MAX) - 1) |
5811 | ||
5812 | static const struct nla_policy | |
5813 | rtnl_stats_get_policy_filters[IFLA_STATS_MAX + 1] = { | |
5814 | [IFLA_STATS_LINK_OFFLOAD_XSTATS] = | |
5815 | NLA_POLICY_MASK(NLA_U32, RTNL_STATS_OFFLOAD_XSTATS_VALID), | |
5816 | }; | |
5817 | ||
5818 | static const struct nla_policy | |
5819 | rtnl_stats_get_policy[IFLA_STATS_GETSET_MAX + 1] = { | |
5820 | [IFLA_STATS_GET_FILTERS] = | |
5821 | NLA_POLICY_NESTED(rtnl_stats_get_policy_filters), | |
5822 | }; | |
5823 | ||
03ba3566 PM |
5824 | static const struct nla_policy |
5825 | ifla_stats_set_policy[IFLA_STATS_GETSET_MAX + 1] = { | |
5fd0b838 | 5826 | [IFLA_STATS_SET_OFFLOAD_XSTATS_L3_STATS] = NLA_POLICY_MAX(NLA_U8, 1), |
03ba3566 PM |
5827 | }; |
5828 | ||
46efc97b PM |
5829 | static int rtnl_stats_get_parse_filters(struct nlattr *ifla_filters, |
5830 | struct rtnl_stats_dump_filters *filters, | |
5831 | struct netlink_ext_ack *extack) | |
5832 | { | |
5833 | struct nlattr *tb[IFLA_STATS_MAX + 1]; | |
5834 | int err; | |
5835 | int at; | |
5836 | ||
5837 | err = nla_parse_nested(tb, IFLA_STATS_MAX, ifla_filters, | |
5838 | rtnl_stats_get_policy_filters, extack); | |
5839 | if (err < 0) | |
5840 | return err; | |
5841 | ||
5842 | for (at = 1; at <= IFLA_STATS_MAX; at++) { | |
5843 | if (tb[at]) { | |
5844 | if (!(filters->mask[0] & IFLA_STATS_FILTER_BIT(at))) { | |
5845 | NL_SET_ERR_MSG(extack, "Filtered attribute not enabled in filter_mask"); | |
5846 | return -EINVAL; | |
5847 | } | |
5848 | filters->mask[at] = nla_get_u32(tb[at]); | |
5849 | } | |
5850 | } | |
5851 | ||
5852 | return 0; | |
5853 | } | |
5854 | ||
5855 | static int rtnl_stats_get_parse(const struct nlmsghdr *nlh, | |
5856 | u32 filter_mask, | |
5857 | struct rtnl_stats_dump_filters *filters, | |
5858 | struct netlink_ext_ack *extack) | |
5859 | { | |
5860 | struct nlattr *tb[IFLA_STATS_GETSET_MAX + 1]; | |
5861 | int err; | |
5862 | int i; | |
5863 | ||
5864 | filters->mask[0] = filter_mask; | |
5865 | for (i = 1; i < ARRAY_SIZE(filters->mask); i++) | |
5866 | filters->mask[i] = -1U; | |
5867 | ||
5868 | err = nlmsg_parse(nlh, sizeof(struct if_stats_msg), tb, | |
5869 | IFLA_STATS_GETSET_MAX, rtnl_stats_get_policy, extack); | |
5870 | if (err < 0) | |
5871 | return err; | |
5872 | ||
5873 | if (tb[IFLA_STATS_GET_FILTERS]) { | |
5874 | err = rtnl_stats_get_parse_filters(tb[IFLA_STATS_GET_FILTERS], | |
5875 | filters, extack); | |
5876 | if (err) | |
5877 | return err; | |
5878 | } | |
5879 | ||
5880 | return 0; | |
5881 | } | |
5882 | ||
51bc860d JK |
5883 | static int rtnl_valid_stats_req(const struct nlmsghdr *nlh, bool strict_check, |
5884 | bool is_dump, struct netlink_ext_ack *extack) | |
5885 | { | |
5886 | struct if_stats_msg *ifsm; | |
5887 | ||
69f23a09 | 5888 | if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*ifsm))) { |
51bc860d JK |
5889 | NL_SET_ERR_MSG(extack, "Invalid header for stats dump"); |
5890 | return -EINVAL; | |
5891 | } | |
5892 | ||
5893 | if (!strict_check) | |
5894 | return 0; | |
5895 | ||
5896 | ifsm = nlmsg_data(nlh); | |
5897 | ||
5898 | /* only requests using strict checks can pass data to influence | |
5899 | * the dump. The legacy exception is filter_mask. | |
5900 | */ | |
5901 | if (ifsm->pad1 || ifsm->pad2 || (is_dump && ifsm->ifindex)) { | |
5902 | NL_SET_ERR_MSG(extack, "Invalid values in header for stats dump request"); | |
5903 | return -EINVAL; | |
5904 | } | |
6300acb2 JK |
5905 | if (ifsm->filter_mask >= IFLA_STATS_FILTER_BIT(IFLA_STATS_MAX + 1)) { |
5906 | NL_SET_ERR_MSG(extack, "Invalid stats requested through filter mask"); | |
5907 | return -EINVAL; | |
5908 | } | |
51bc860d JK |
5909 | |
5910 | return 0; | |
5911 | } | |
5912 | ||
c21ef3e3 DA |
5913 | static int rtnl_stats_get(struct sk_buff *skb, struct nlmsghdr *nlh, |
5914 | struct netlink_ext_ack *extack) | |
10c9ead9 | 5915 | { |
46efc97b | 5916 | struct rtnl_stats_dump_filters filters; |
10c9ead9 | 5917 | struct net *net = sock_net(skb->sk); |
10c9ead9 | 5918 | struct net_device *dev = NULL; |
e8872a25 NA |
5919 | int idxattr = 0, prividx = 0; |
5920 | struct if_stats_msg *ifsm; | |
10c9ead9 | 5921 | struct sk_buff *nskb; |
10c9ead9 RP |
5922 | int err; |
5923 | ||
51bc860d JK |
5924 | err = rtnl_valid_stats_req(nlh, netlink_strict_get_check(skb), |
5925 | false, extack); | |
5926 | if (err) | |
5927 | return err; | |
4775cc1f | 5928 | |
10c9ead9 RP |
5929 | ifsm = nlmsg_data(nlh); |
5930 | if (ifsm->ifindex > 0) | |
5931 | dev = __dev_get_by_index(net, ifsm->ifindex); | |
5932 | else | |
5933 | return -EINVAL; | |
5934 | ||
5935 | if (!dev) | |
5936 | return -ENODEV; | |
5937 | ||
46efc97b | 5938 | if (!ifsm->filter_mask) { |
22b67d17 | 5939 | NL_SET_ERR_MSG(extack, "Filter mask must be set for stats get"); |
10c9ead9 | 5940 | return -EINVAL; |
22b67d17 | 5941 | } |
10c9ead9 | 5942 | |
46efc97b PM |
5943 | err = rtnl_stats_get_parse(nlh, ifsm->filter_mask, &filters, extack); |
5944 | if (err) | |
5945 | return err; | |
5946 | ||
5947 | nskb = nlmsg_new(if_nlmsg_stats_size(dev, &filters), GFP_KERNEL); | |
10c9ead9 RP |
5948 | if (!nskb) |
5949 | return -ENOBUFS; | |
5950 | ||
5951 | err = rtnl_fill_statsinfo(nskb, dev, RTM_NEWSTATS, | |
5952 | NETLINK_CB(skb).portid, nlh->nlmsg_seq, 0, | |
05415bcc | 5953 | 0, &filters, &idxattr, &prividx, extack); |
10c9ead9 RP |
5954 | if (err < 0) { |
5955 | /* -EMSGSIZE implies BUG in if_nlmsg_stats_size */ | |
5956 | WARN_ON(err == -EMSGSIZE); | |
5957 | kfree_skb(nskb); | |
5958 | } else { | |
5959 | err = rtnl_unicast(nskb, net, NETLINK_CB(skb).portid); | |
5960 | } | |
5961 | ||
5962 | return err; | |
5963 | } | |
5964 | ||
5965 | static int rtnl_stats_dump(struct sk_buff *skb, struct netlink_callback *cb) | |
5966 | { | |
841891ec | 5967 | struct netlink_ext_ack *extack = cb->extack; |
46efc97b | 5968 | struct rtnl_stats_dump_filters filters; |
10c9ead9 | 5969 | struct net *net = sock_net(skb->sk); |
e8872a25 | 5970 | unsigned int flags = NLM_F_MULTI; |
10c9ead9 | 5971 | struct if_stats_msg *ifsm; |
0feb396f ED |
5972 | struct { |
5973 | unsigned long ifindex; | |
5974 | int idxattr; | |
5975 | int prividx; | |
5976 | } *ctx = (void *)cb->ctx; | |
e8872a25 | 5977 | struct net_device *dev; |
0feb396f | 5978 | int err; |
10c9ead9 RP |
5979 | |
5980 | cb->seq = net->dev_base_seq; | |
5981 | ||
51bc860d JK |
5982 | err = rtnl_valid_stats_req(cb->nlh, cb->strict_check, true, extack); |
5983 | if (err) | |
5984 | return err; | |
4775cc1f | 5985 | |
10c9ead9 | 5986 | ifsm = nlmsg_data(cb->nlh); |
46efc97b | 5987 | if (!ifsm->filter_mask) { |
841891ec | 5988 | NL_SET_ERR_MSG(extack, "Filter mask must be set for stats dump"); |
10c9ead9 | 5989 | return -EINVAL; |
841891ec | 5990 | } |
10c9ead9 | 5991 | |
46efc97b PM |
5992 | err = rtnl_stats_get_parse(cb->nlh, ifsm->filter_mask, &filters, |
5993 | extack); | |
5994 | if (err) | |
5995 | return err; | |
5996 | ||
0feb396f ED |
5997 | for_each_netdev_dump(net, dev, ctx->ifindex) { |
5998 | err = rtnl_fill_statsinfo(skb, dev, RTM_NEWSTATS, | |
5999 | NETLINK_CB(cb->skb).portid, | |
6000 | cb->nlh->nlmsg_seq, 0, | |
6001 | flags, &filters, | |
6002 | &ctx->idxattr, &ctx->prividx, | |
6003 | extack); | |
6004 | /* If we ran out of room on the first message, | |
6005 | * we're in trouble. | |
6006 | */ | |
6007 | WARN_ON((err == -EMSGSIZE) && (skb->len == 0)); | |
10c9ead9 | 6008 | |
0feb396f ED |
6009 | if (err < 0) |
6010 | break; | |
6011 | ctx->prividx = 0; | |
6012 | ctx->idxattr = 0; | |
6013 | nl_dump_check_consistent(cb, nlmsg_hdr(skb)); | |
10c9ead9 | 6014 | } |
10c9ead9 | 6015 | |
136c2a9a | 6016 | return err; |
10c9ead9 RP |
6017 | } |
6018 | ||
5fd0b838 PM |
6019 | void rtnl_offload_xstats_notify(struct net_device *dev) |
6020 | { | |
6021 | struct rtnl_stats_dump_filters response_filters = {}; | |
6022 | struct net *net = dev_net(dev); | |
6023 | int idxattr = 0, prividx = 0; | |
6024 | struct sk_buff *skb; | |
6025 | int err = -ENOBUFS; | |
6026 | ||
6027 | ASSERT_RTNL(); | |
6028 | ||
6029 | response_filters.mask[0] |= | |
6030 | IFLA_STATS_FILTER_BIT(IFLA_STATS_LINK_OFFLOAD_XSTATS); | |
6031 | response_filters.mask[IFLA_STATS_LINK_OFFLOAD_XSTATS] |= | |
6032 | IFLA_STATS_FILTER_BIT(IFLA_OFFLOAD_XSTATS_HW_S_INFO); | |
6033 | ||
6034 | skb = nlmsg_new(if_nlmsg_stats_size(dev, &response_filters), | |
6035 | GFP_KERNEL); | |
6036 | if (!skb) | |
6037 | goto errout; | |
6038 | ||
6039 | err = rtnl_fill_statsinfo(skb, dev, RTM_NEWSTATS, 0, 0, 0, 0, | |
6040 | &response_filters, &idxattr, &prividx, NULL); | |
6041 | if (err < 0) { | |
6042 | kfree_skb(skb); | |
6043 | goto errout; | |
6044 | } | |
6045 | ||
6046 | rtnl_notify(skb, net, 0, RTNLGRP_STATS, NULL, GFP_KERNEL); | |
6047 | return; | |
6048 | ||
6049 | errout: | |
6050 | rtnl_set_sk_err(net, RTNLGRP_STATS, err); | |
6051 | } | |
6052 | EXPORT_SYMBOL(rtnl_offload_xstats_notify); | |
6053 | ||
03ba3566 PM |
6054 | static int rtnl_stats_set(struct sk_buff *skb, struct nlmsghdr *nlh, |
6055 | struct netlink_ext_ack *extack) | |
6056 | { | |
5fd0b838 | 6057 | enum netdev_offload_xstats_type t_l3 = NETDEV_OFFLOAD_XSTATS_TYPE_L3; |
03ba3566 PM |
6058 | struct rtnl_stats_dump_filters response_filters = {}; |
6059 | struct nlattr *tb[IFLA_STATS_GETSET_MAX + 1]; | |
6060 | struct net *net = sock_net(skb->sk); | |
6061 | struct net_device *dev = NULL; | |
03ba3566 | 6062 | struct if_stats_msg *ifsm; |
5fd0b838 | 6063 | bool notify = false; |
03ba3566 PM |
6064 | int err; |
6065 | ||
6066 | err = rtnl_valid_stats_req(nlh, netlink_strict_get_check(skb), | |
6067 | false, extack); | |
6068 | if (err) | |
6069 | return err; | |
6070 | ||
6071 | ifsm = nlmsg_data(nlh); | |
6072 | if (ifsm->family != AF_UNSPEC) { | |
6073 | NL_SET_ERR_MSG(extack, "Address family should be AF_UNSPEC"); | |
6074 | return -EINVAL; | |
6075 | } | |
6076 | ||
6077 | if (ifsm->ifindex > 0) | |
6078 | dev = __dev_get_by_index(net, ifsm->ifindex); | |
6079 | else | |
6080 | return -EINVAL; | |
6081 | ||
6082 | if (!dev) | |
6083 | return -ENODEV; | |
6084 | ||
6085 | if (ifsm->filter_mask) { | |
6086 | NL_SET_ERR_MSG(extack, "Filter mask must be 0 for stats set"); | |
6087 | return -EINVAL; | |
6088 | } | |
6089 | ||
6090 | err = nlmsg_parse(nlh, sizeof(*ifsm), tb, IFLA_STATS_GETSET_MAX, | |
6091 | ifla_stats_set_policy, extack); | |
6092 | if (err < 0) | |
6093 | return err; | |
6094 | ||
5fd0b838 PM |
6095 | if (tb[IFLA_STATS_SET_OFFLOAD_XSTATS_L3_STATS]) { |
6096 | u8 req = nla_get_u8(tb[IFLA_STATS_SET_OFFLOAD_XSTATS_L3_STATS]); | |
03ba3566 | 6097 | |
5fd0b838 PM |
6098 | if (req) |
6099 | err = netdev_offload_xstats_enable(dev, t_l3, extack); | |
6100 | else | |
6101 | err = netdev_offload_xstats_disable(dev, t_l3); | |
6102 | ||
6103 | if (!err) | |
6104 | notify = true; | |
6105 | else if (err != -EALREADY) | |
6106 | return err; | |
6107 | ||
6108 | response_filters.mask[0] |= | |
6109 | IFLA_STATS_FILTER_BIT(IFLA_STATS_LINK_OFFLOAD_XSTATS); | |
6110 | response_filters.mask[IFLA_STATS_LINK_OFFLOAD_XSTATS] |= | |
6111 | IFLA_STATS_FILTER_BIT(IFLA_OFFLOAD_XSTATS_HW_S_INFO); | |
03ba3566 PM |
6112 | } |
6113 | ||
5fd0b838 PM |
6114 | if (notify) |
6115 | rtnl_offload_xstats_notify(dev); | |
6116 | ||
6117 | return 0; | |
03ba3566 PM |
6118 | } |
6119 | ||
cc7f5022 IS |
6120 | static int rtnl_mdb_valid_dump_req(const struct nlmsghdr *nlh, |
6121 | struct netlink_ext_ack *extack) | |
6122 | { | |
6123 | struct br_port_msg *bpm; | |
6124 | ||
6125 | if (nlh->nlmsg_len < nlmsg_msg_size(sizeof(*bpm))) { | |
6126 | NL_SET_ERR_MSG(extack, "Invalid header for mdb dump request"); | |
6127 | return -EINVAL; | |
6128 | } | |
6129 | ||
6130 | bpm = nlmsg_data(nlh); | |
6131 | if (bpm->ifindex) { | |
6132 | NL_SET_ERR_MSG(extack, "Filtering by device index is not supported for mdb dump request"); | |
6133 | return -EINVAL; | |
6134 | } | |
6135 | if (nlmsg_attrlen(nlh, sizeof(*bpm))) { | |
6136 | NL_SET_ERR_MSG(extack, "Invalid data after header in mdb dump request"); | |
6137 | return -EINVAL; | |
6138 | } | |
6139 | ||
6140 | return 0; | |
6141 | } | |
6142 | ||
6143 | struct rtnl_mdb_dump_ctx { | |
6144 | long idx; | |
6145 | }; | |
6146 | ||
6147 | static int rtnl_mdb_dump(struct sk_buff *skb, struct netlink_callback *cb) | |
6148 | { | |
6149 | struct rtnl_mdb_dump_ctx *ctx = (void *)cb->ctx; | |
6150 | struct net *net = sock_net(skb->sk); | |
6151 | struct net_device *dev; | |
6152 | int idx, s_idx; | |
6153 | int err; | |
6154 | ||
6155 | NL_ASSERT_DUMP_CTX_FITS(struct rtnl_mdb_dump_ctx); | |
6156 | ||
6157 | if (cb->strict_check) { | |
6158 | err = rtnl_mdb_valid_dump_req(cb->nlh, cb->extack); | |
6159 | if (err) | |
6160 | return err; | |
6161 | } | |
6162 | ||
6163 | s_idx = ctx->idx; | |
6164 | idx = 0; | |
6165 | ||
6166 | for_each_netdev(net, dev) { | |
6167 | if (idx < s_idx) | |
6168 | goto skip; | |
6169 | if (!dev->netdev_ops->ndo_mdb_dump) | |
6170 | goto skip; | |
6171 | ||
6172 | err = dev->netdev_ops->ndo_mdb_dump(dev, skb, cb); | |
6173 | if (err == -EMSGSIZE) | |
6174 | goto out; | |
6175 | /* Moving on to next device, reset markers and sequence | |
6176 | * counters since they are all maintained per-device. | |
6177 | */ | |
6178 | memset(cb->ctx, 0, sizeof(cb->ctx)); | |
6179 | cb->prev_seq = 0; | |
6180 | cb->seq = 0; | |
6181 | skip: | |
6182 | idx++; | |
6183 | } | |
6184 | ||
6185 | out: | |
6186 | ctx->idx = idx; | |
6187 | return skb->len; | |
6188 | } | |
6189 | ||
ddd17a54 IS |
6190 | static int rtnl_validate_mdb_entry_get(const struct nlattr *attr, |
6191 | struct netlink_ext_ack *extack) | |
6192 | { | |
6193 | struct br_mdb_entry *entry = nla_data(attr); | |
6194 | ||
6195 | if (nla_len(attr) != sizeof(struct br_mdb_entry)) { | |
6196 | NL_SET_ERR_MSG_ATTR(extack, attr, "Invalid attribute length"); | |
6197 | return -EINVAL; | |
6198 | } | |
6199 | ||
6200 | if (entry->ifindex) { | |
6201 | NL_SET_ERR_MSG(extack, "Entry ifindex cannot be specified"); | |
6202 | return -EINVAL; | |
6203 | } | |
6204 | ||
6205 | if (entry->state) { | |
6206 | NL_SET_ERR_MSG(extack, "Entry state cannot be specified"); | |
6207 | return -EINVAL; | |
6208 | } | |
6209 | ||
6210 | if (entry->flags) { | |
6211 | NL_SET_ERR_MSG(extack, "Entry flags cannot be specified"); | |
6212 | return -EINVAL; | |
6213 | } | |
6214 | ||
6215 | if (entry->vid >= VLAN_VID_MASK) { | |
6216 | NL_SET_ERR_MSG(extack, "Invalid entry VLAN id"); | |
6217 | return -EINVAL; | |
6218 | } | |
6219 | ||
6220 | if (entry->addr.proto != htons(ETH_P_IP) && | |
6221 | entry->addr.proto != htons(ETH_P_IPV6) && | |
6222 | entry->addr.proto != 0) { | |
6223 | NL_SET_ERR_MSG(extack, "Unknown entry protocol"); | |
6224 | return -EINVAL; | |
6225 | } | |
6226 | ||
6227 | return 0; | |
6228 | } | |
6229 | ||
6230 | static const struct nla_policy mdba_get_policy[MDBA_GET_ENTRY_MAX + 1] = { | |
6231 | [MDBA_GET_ENTRY] = NLA_POLICY_VALIDATE_FN(NLA_BINARY, | |
6232 | rtnl_validate_mdb_entry_get, | |
6233 | sizeof(struct br_mdb_entry)), | |
6234 | [MDBA_GET_ENTRY_ATTRS] = { .type = NLA_NESTED }, | |
6235 | }; | |
6236 | ||
6237 | static int rtnl_mdb_get(struct sk_buff *in_skb, struct nlmsghdr *nlh, | |
6238 | struct netlink_ext_ack *extack) | |
6239 | { | |
6240 | struct nlattr *tb[MDBA_GET_ENTRY_MAX + 1]; | |
6241 | struct net *net = sock_net(in_skb->sk); | |
6242 | struct br_port_msg *bpm; | |
6243 | struct net_device *dev; | |
6244 | int err; | |
6245 | ||
6246 | err = nlmsg_parse(nlh, sizeof(struct br_port_msg), tb, | |
6247 | MDBA_GET_ENTRY_MAX, mdba_get_policy, extack); | |
6248 | if (err) | |
6249 | return err; | |
6250 | ||
6251 | bpm = nlmsg_data(nlh); | |
6252 | if (!bpm->ifindex) { | |
6253 | NL_SET_ERR_MSG(extack, "Invalid ifindex"); | |
6254 | return -EINVAL; | |
6255 | } | |
6256 | ||
6257 | dev = __dev_get_by_index(net, bpm->ifindex); | |
6258 | if (!dev) { | |
6259 | NL_SET_ERR_MSG(extack, "Device doesn't exist"); | |
6260 | return -ENODEV; | |
6261 | } | |
6262 | ||
6263 | if (NL_REQ_ATTR_CHECK(extack, NULL, tb, MDBA_GET_ENTRY)) { | |
6264 | NL_SET_ERR_MSG(extack, "Missing MDBA_GET_ENTRY attribute"); | |
6265 | return -EINVAL; | |
6266 | } | |
6267 | ||
6268 | if (!dev->netdev_ops->ndo_mdb_get) { | |
6269 | NL_SET_ERR_MSG(extack, "Device does not support MDB operations"); | |
6270 | return -EOPNOTSUPP; | |
6271 | } | |
6272 | ||
6273 | return dev->netdev_ops->ndo_mdb_get(dev, tb, NETLINK_CB(in_skb).portid, | |
6274 | nlh->nlmsg_seq, extack); | |
6275 | } | |
6276 | ||
cc7f5022 IS |
6277 | static int rtnl_validate_mdb_entry(const struct nlattr *attr, |
6278 | struct netlink_ext_ack *extack) | |
6279 | { | |
6280 | struct br_mdb_entry *entry = nla_data(attr); | |
6281 | ||
6282 | if (nla_len(attr) != sizeof(struct br_mdb_entry)) { | |
6283 | NL_SET_ERR_MSG_ATTR(extack, attr, "Invalid attribute length"); | |
6284 | return -EINVAL; | |
6285 | } | |
6286 | ||
6287 | if (entry->ifindex == 0) { | |
6288 | NL_SET_ERR_MSG(extack, "Zero entry ifindex is not allowed"); | |
6289 | return -EINVAL; | |
6290 | } | |
6291 | ||
6292 | if (entry->addr.proto == htons(ETH_P_IP)) { | |
da654c80 IS |
6293 | if (!ipv4_is_multicast(entry->addr.u.ip4) && |
6294 | !ipv4_is_zeronet(entry->addr.u.ip4)) { | |
6295 | NL_SET_ERR_MSG(extack, "IPv4 entry group address is not multicast or 0.0.0.0"); | |
cc7f5022 IS |
6296 | return -EINVAL; |
6297 | } | |
6298 | if (ipv4_is_local_multicast(entry->addr.u.ip4)) { | |
6299 | NL_SET_ERR_MSG(extack, "IPv4 entry group address is local multicast"); | |
6300 | return -EINVAL; | |
6301 | } | |
6302 | #if IS_ENABLED(CONFIG_IPV6) | |
6303 | } else if (entry->addr.proto == htons(ETH_P_IPV6)) { | |
6304 | if (ipv6_addr_is_ll_all_nodes(&entry->addr.u.ip6)) { | |
6305 | NL_SET_ERR_MSG(extack, "IPv6 entry group address is link-local all nodes"); | |
6306 | return -EINVAL; | |
6307 | } | |
6308 | #endif | |
6309 | } else if (entry->addr.proto == 0) { | |
6310 | /* L2 mdb */ | |
6311 | if (!is_multicast_ether_addr(entry->addr.u.mac_addr)) { | |
6312 | NL_SET_ERR_MSG(extack, "L2 entry group is not multicast"); | |
6313 | return -EINVAL; | |
6314 | } | |
6315 | } else { | |
6316 | NL_SET_ERR_MSG(extack, "Unknown entry protocol"); | |
6317 | return -EINVAL; | |
6318 | } | |
6319 | ||
6320 | if (entry->state != MDB_PERMANENT && entry->state != MDB_TEMPORARY) { | |
6321 | NL_SET_ERR_MSG(extack, "Unknown entry state"); | |
6322 | return -EINVAL; | |
6323 | } | |
6324 | if (entry->vid >= VLAN_VID_MASK) { | |
6325 | NL_SET_ERR_MSG(extack, "Invalid entry VLAN id"); | |
6326 | return -EINVAL; | |
6327 | } | |
6328 | ||
6329 | return 0; | |
6330 | } | |
6331 | ||
6332 | static const struct nla_policy mdba_policy[MDBA_SET_ENTRY_MAX + 1] = { | |
6333 | [MDBA_SET_ENTRY_UNSPEC] = { .strict_start_type = MDBA_SET_ENTRY_ATTRS + 1 }, | |
6334 | [MDBA_SET_ENTRY] = NLA_POLICY_VALIDATE_FN(NLA_BINARY, | |
6335 | rtnl_validate_mdb_entry, | |
6336 | sizeof(struct br_mdb_entry)), | |
6337 | [MDBA_SET_ENTRY_ATTRS] = { .type = NLA_NESTED }, | |
6338 | }; | |
6339 | ||
6340 | static int rtnl_mdb_add(struct sk_buff *skb, struct nlmsghdr *nlh, | |
6341 | struct netlink_ext_ack *extack) | |
6342 | { | |
6343 | struct nlattr *tb[MDBA_SET_ENTRY_MAX + 1]; | |
6344 | struct net *net = sock_net(skb->sk); | |
6345 | struct br_port_msg *bpm; | |
6346 | struct net_device *dev; | |
6347 | int err; | |
6348 | ||
6349 | err = nlmsg_parse_deprecated(nlh, sizeof(*bpm), tb, | |
6350 | MDBA_SET_ENTRY_MAX, mdba_policy, extack); | |
6351 | if (err) | |
6352 | return err; | |
6353 | ||
6354 | bpm = nlmsg_data(nlh); | |
6355 | if (!bpm->ifindex) { | |
6356 | NL_SET_ERR_MSG(extack, "Invalid ifindex"); | |
6357 | return -EINVAL; | |
6358 | } | |
6359 | ||
6360 | dev = __dev_get_by_index(net, bpm->ifindex); | |
6361 | if (!dev) { | |
6362 | NL_SET_ERR_MSG(extack, "Device doesn't exist"); | |
6363 | return -ENODEV; | |
6364 | } | |
6365 | ||
6366 | if (NL_REQ_ATTR_CHECK(extack, NULL, tb, MDBA_SET_ENTRY)) { | |
6367 | NL_SET_ERR_MSG(extack, "Missing MDBA_SET_ENTRY attribute"); | |
6368 | return -EINVAL; | |
6369 | } | |
6370 | ||
6371 | if (!dev->netdev_ops->ndo_mdb_add) { | |
6372 | NL_SET_ERR_MSG(extack, "Device does not support MDB operations"); | |
6373 | return -EOPNOTSUPP; | |
6374 | } | |
6375 | ||
6376 | return dev->netdev_ops->ndo_mdb_add(dev, tb, nlh->nlmsg_flags, extack); | |
6377 | } | |
6378 | ||
e0cd06f7 IS |
6379 | static int rtnl_validate_mdb_entry_del_bulk(const struct nlattr *attr, |
6380 | struct netlink_ext_ack *extack) | |
6381 | { | |
6382 | struct br_mdb_entry *entry = nla_data(attr); | |
6383 | struct br_mdb_entry zero_entry = {}; | |
6384 | ||
6385 | if (nla_len(attr) != sizeof(struct br_mdb_entry)) { | |
6386 | NL_SET_ERR_MSG_ATTR(extack, attr, "Invalid attribute length"); | |
6387 | return -EINVAL; | |
6388 | } | |
6389 | ||
6390 | if (entry->state != MDB_PERMANENT && entry->state != MDB_TEMPORARY) { | |
6391 | NL_SET_ERR_MSG(extack, "Unknown entry state"); | |
6392 | return -EINVAL; | |
6393 | } | |
6394 | ||
6395 | if (entry->flags) { | |
6396 | NL_SET_ERR_MSG(extack, "Entry flags cannot be set"); | |
6397 | return -EINVAL; | |
6398 | } | |
6399 | ||
6400 | if (entry->vid >= VLAN_N_VID - 1) { | |
6401 | NL_SET_ERR_MSG(extack, "Invalid entry VLAN id"); | |
6402 | return -EINVAL; | |
6403 | } | |
6404 | ||
6405 | if (memcmp(&entry->addr, &zero_entry.addr, sizeof(entry->addr))) { | |
6406 | NL_SET_ERR_MSG(extack, "Entry address cannot be set"); | |
6407 | return -EINVAL; | |
6408 | } | |
6409 | ||
6410 | return 0; | |
6411 | } | |
6412 | ||
6413 | static const struct nla_policy mdba_del_bulk_policy[MDBA_SET_ENTRY_MAX + 1] = { | |
6414 | [MDBA_SET_ENTRY] = NLA_POLICY_VALIDATE_FN(NLA_BINARY, | |
6415 | rtnl_validate_mdb_entry_del_bulk, | |
6416 | sizeof(struct br_mdb_entry)), | |
6417 | [MDBA_SET_ENTRY_ATTRS] = { .type = NLA_NESTED }, | |
6418 | }; | |
6419 | ||
cc7f5022 IS |
6420 | static int rtnl_mdb_del(struct sk_buff *skb, struct nlmsghdr *nlh, |
6421 | struct netlink_ext_ack *extack) | |
6422 | { | |
e0cd06f7 | 6423 | bool del_bulk = !!(nlh->nlmsg_flags & NLM_F_BULK); |
cc7f5022 IS |
6424 | struct nlattr *tb[MDBA_SET_ENTRY_MAX + 1]; |
6425 | struct net *net = sock_net(skb->sk); | |
6426 | struct br_port_msg *bpm; | |
6427 | struct net_device *dev; | |
6428 | int err; | |
6429 | ||
e0cd06f7 IS |
6430 | if (!del_bulk) |
6431 | err = nlmsg_parse_deprecated(nlh, sizeof(*bpm), tb, | |
6432 | MDBA_SET_ENTRY_MAX, mdba_policy, | |
6433 | extack); | |
6434 | else | |
6435 | err = nlmsg_parse(nlh, sizeof(*bpm), tb, MDBA_SET_ENTRY_MAX, | |
6436 | mdba_del_bulk_policy, extack); | |
cc7f5022 IS |
6437 | if (err) |
6438 | return err; | |
6439 | ||
6440 | bpm = nlmsg_data(nlh); | |
6441 | if (!bpm->ifindex) { | |
6442 | NL_SET_ERR_MSG(extack, "Invalid ifindex"); | |
6443 | return -EINVAL; | |
6444 | } | |
6445 | ||
6446 | dev = __dev_get_by_index(net, bpm->ifindex); | |
6447 | if (!dev) { | |
6448 | NL_SET_ERR_MSG(extack, "Device doesn't exist"); | |
6449 | return -ENODEV; | |
6450 | } | |
6451 | ||
6452 | if (NL_REQ_ATTR_CHECK(extack, NULL, tb, MDBA_SET_ENTRY)) { | |
6453 | NL_SET_ERR_MSG(extack, "Missing MDBA_SET_ENTRY attribute"); | |
6454 | return -EINVAL; | |
6455 | } | |
6456 | ||
d8e81f13 IS |
6457 | if (del_bulk) { |
6458 | if (!dev->netdev_ops->ndo_mdb_del_bulk) { | |
6459 | NL_SET_ERR_MSG(extack, "Device does not support MDB bulk deletion"); | |
6460 | return -EOPNOTSUPP; | |
6461 | } | |
6462 | return dev->netdev_ops->ndo_mdb_del_bulk(dev, tb, extack); | |
6463 | } | |
6464 | ||
cc7f5022 IS |
6465 | if (!dev->netdev_ops->ndo_mdb_del) { |
6466 | NL_SET_ERR_MSG(extack, "Device does not support MDB operations"); | |
6467 | return -EOPNOTSUPP; | |
6468 | } | |
6469 | ||
6470 | return dev->netdev_ops->ndo_mdb_del(dev, tb, extack); | |
6471 | } | |
6472 | ||
1da177e4 LT |
6473 | /* Process one rtnetlink message. */ |
6474 | ||
2d4bc933 JB |
6475 | static int rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, |
6476 | struct netlink_ext_ack *extack) | |
1da177e4 | 6477 | { |
3b1e0a65 | 6478 | struct net *net = sock_net(skb->sk); |
addf9b90 | 6479 | struct rtnl_link *link; |
12dc5c2c | 6480 | enum rtnl_kinds kind; |
e4202511 | 6481 | struct module *owner; |
6853dd48 | 6482 | int err = -EOPNOTSUPP; |
e2849863 | 6483 | rtnl_doit_func doit; |
62256f98 | 6484 | unsigned int flags; |
1da177e4 LT |
6485 | int family; |
6486 | int type; | |
1da177e4 | 6487 | |
1da177e4 | 6488 | type = nlh->nlmsg_type; |
1da177e4 | 6489 | if (type > RTM_MAX) |
038890fe | 6490 | return -EOPNOTSUPP; |
1da177e4 LT |
6491 | |
6492 | type -= RTM_BASE; | |
6493 | ||
6494 | /* All the messages must have at least 1 byte length */ | |
573ce260 | 6495 | if (nlmsg_len(nlh) < sizeof(struct rtgenmsg)) |
1da177e4 LT |
6496 | return 0; |
6497 | ||
573ce260 | 6498 | family = ((struct rtgenmsg *)nlmsg_data(nlh))->rtgen_family; |
2e9ea3e3 | 6499 | kind = rtnl_msgtype_kind(type); |
1da177e4 | 6500 | |
12dc5c2c | 6501 | if (kind != RTNL_KIND_GET && !netlink_net_capable(skb, CAP_NET_ADMIN)) |
1d00a4eb | 6502 | return -EPERM; |
1da177e4 | 6503 | |
6853dd48 | 6504 | rcu_read_lock(); |
12dc5c2c | 6505 | if (kind == RTNL_KIND_GET && (nlh->nlmsg_flags & NLM_F_DUMP)) { |
97c53cac | 6506 | struct sock *rtnl; |
e2849863 | 6507 | rtnl_dumpit_func dumpit; |
ebfe3c51 | 6508 | u32 min_dump_alloc = 0; |
1da177e4 | 6509 | |
addf9b90 FW |
6510 | link = rtnl_get_link(family, type); |
6511 | if (!link || !link->dumpit) { | |
6853dd48 | 6512 | family = PF_UNSPEC; |
addf9b90 FW |
6513 | link = rtnl_get_link(family, type); |
6514 | if (!link || !link->dumpit) | |
6853dd48 FW |
6515 | goto err_unlock; |
6516 | } | |
e4202511 | 6517 | owner = link->owner; |
addf9b90 | 6518 | dumpit = link->dumpit; |
386520e0 | 6519 | flags = link->flags; |
e1fa6d21 | 6520 | |
5c2bb9b6 | 6521 | if (type == RTM_GETLINK - RTM_BASE) |
e1fa6d21 | 6522 | min_dump_alloc = rtnl_calcit(skb, nlh); |
9ac4a169 | 6523 | |
e4202511 FW |
6524 | err = 0; |
6525 | /* need to do this before rcu_read_unlock() */ | |
6526 | if (!try_module_get(owner)) | |
6527 | err = -EPROTONOSUPPORT; | |
6528 | ||
6853dd48 FW |
6529 | rcu_read_unlock(); |
6530 | ||
97c53cac | 6531 | rtnl = net->rtnl; |
e4202511 | 6532 | if (err == 0) { |
80d326fa PNA |
6533 | struct netlink_dump_control c = { |
6534 | .dump = dumpit, | |
6535 | .min_dump_alloc = min_dump_alloc, | |
e4202511 | 6536 | .module = owner, |
386520e0 | 6537 | .flags = flags, |
80d326fa PNA |
6538 | }; |
6539 | err = netlink_dump_start(rtnl, skb, nlh, &c); | |
e4202511 FW |
6540 | /* netlink_dump_start() will keep a reference on |
6541 | * module if dump is still in progress. | |
6542 | */ | |
6543 | module_put(owner); | |
80d326fa | 6544 | } |
2907c35f | 6545 | return err; |
1da177e4 LT |
6546 | } |
6547 | ||
addf9b90 FW |
6548 | link = rtnl_get_link(family, type); |
6549 | if (!link || !link->doit) { | |
8caa38b5 | 6550 | family = PF_UNSPEC; |
addf9b90 FW |
6551 | link = rtnl_get_link(PF_UNSPEC, type); |
6552 | if (!link || !link->doit) | |
6553 | goto out_unlock; | |
8caa38b5 FW |
6554 | } |
6555 | ||
e4202511 FW |
6556 | owner = link->owner; |
6557 | if (!try_module_get(owner)) { | |
6558 | err = -EPROTONOSUPPORT; | |
6559 | goto out_unlock; | |
6560 | } | |
6561 | ||
addf9b90 | 6562 | flags = link->flags; |
a6cec0bc NA |
6563 | if (kind == RTNL_KIND_DEL && (nlh->nlmsg_flags & NLM_F_BULK) && |
6564 | !(flags & RTNL_FLAG_BULK_DEL_SUPPORTED)) { | |
6565 | NL_SET_ERR_MSG(extack, "Bulk delete is not supported"); | |
5b22f627 | 6566 | module_put(owner); |
a6cec0bc NA |
6567 | goto err_unlock; |
6568 | } | |
6569 | ||
62256f98 | 6570 | if (flags & RTNL_FLAG_DOIT_UNLOCKED) { |
addf9b90 | 6571 | doit = link->doit; |
62256f98 FW |
6572 | rcu_read_unlock(); |
6573 | if (doit) | |
6574 | err = doit(skb, nlh, extack); | |
e4202511 | 6575 | module_put(owner); |
62256f98 FW |
6576 | return err; |
6577 | } | |
6853dd48 | 6578 | rcu_read_unlock(); |
1da177e4 | 6579 | |
6853dd48 | 6580 | rtnl_lock(); |
addf9b90 FW |
6581 | link = rtnl_get_link(family, type); |
6582 | if (link && link->doit) | |
6583 | err = link->doit(skb, nlh, extack); | |
0cc09020 | 6584 | rtnl_unlock(); |
addf9b90 | 6585 | |
e4202511 FW |
6586 | module_put(owner); |
6587 | ||
addf9b90 FW |
6588 | return err; |
6589 | ||
6590 | out_unlock: | |
6591 | rcu_read_unlock(); | |
0cc09020 FW |
6592 | return err; |
6593 | ||
6594 | err_unlock: | |
6853dd48 | 6595 | rcu_read_unlock(); |
0cc09020 | 6596 | return -EOPNOTSUPP; |
1da177e4 LT |
6597 | } |
6598 | ||
cd40b7d3 | 6599 | static void rtnetlink_rcv(struct sk_buff *skb) |
1da177e4 | 6600 | { |
cd40b7d3 | 6601 | netlink_rcv_skb(skb, &rtnetlink_rcv_msg); |
1da177e4 LT |
6602 | } |
6603 | ||
5f729eaa JG |
6604 | static int rtnetlink_bind(struct net *net, int group) |
6605 | { | |
6606 | switch (group) { | |
6607 | case RTNLGRP_IPV4_MROUTE_R: | |
6608 | case RTNLGRP_IPV6_MROUTE_R: | |
6609 | if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) | |
6610 | return -EPERM; | |
6611 | break; | |
6612 | } | |
6613 | return 0; | |
6614 | } | |
6615 | ||
1da177e4 LT |
6616 | static int rtnetlink_event(struct notifier_block *this, unsigned long event, void *ptr) |
6617 | { | |
351638e7 | 6618 | struct net_device *dev = netdev_notifier_info_to_dev(ptr); |
e9dc8653 | 6619 | |
1da177e4 | 6620 | switch (event) { |
5138e86f | 6621 | case NETDEV_REBOOT: |
8a212589 | 6622 | case NETDEV_CHANGEMTU: |
3753654e | 6623 | case NETDEV_CHANGEADDR: |
5138e86f VY |
6624 | case NETDEV_CHANGENAME: |
6625 | case NETDEV_FEAT_CHANGE: | |
6626 | case NETDEV_BONDING_FAILOVER: | |
e6e66594 | 6627 | case NETDEV_POST_TYPE_CHANGE: |
5138e86f | 6628 | case NETDEV_NOTIFY_PEERS: |
dc709f37 | 6629 | case NETDEV_CHANGEUPPER: |
5138e86f | 6630 | case NETDEV_RESEND_IGMP: |
5138e86f | 6631 | case NETDEV_CHANGEINFODATA: |
eeda3fb9 | 6632 | case NETDEV_CHANGELOWERSTATE: |
ebdcf045 | 6633 | case NETDEV_CHANGE_TX_QUEUE_LEN: |
3d3ea5af | 6634 | rtmsg_ifinfo_event(RTM_NEWLINK, dev, 0, rtnl_get_event(event), |
1d997f10 | 6635 | GFP_KERNEL, NULL, 0, 0, NULL); |
1da177e4 LT |
6636 | break; |
6637 | default: | |
1da177e4 LT |
6638 | break; |
6639 | } | |
6640 | return NOTIFY_DONE; | |
6641 | } | |
6642 | ||
6643 | static struct notifier_block rtnetlink_dev_notifier = { | |
6644 | .notifier_call = rtnetlink_event, | |
6645 | }; | |
6646 | ||
97c53cac | 6647 | |
2c8c1e72 | 6648 | static int __net_init rtnetlink_net_init(struct net *net) |
97c53cac DL |
6649 | { |
6650 | struct sock *sk; | |
a31f2d17 PNA |
6651 | struct netlink_kernel_cfg cfg = { |
6652 | .groups = RTNLGRP_MAX, | |
6653 | .input = rtnetlink_rcv, | |
6654 | .cb_mutex = &rtnl_mutex, | |
9785e10a | 6655 | .flags = NL_CFG_F_NONROOT_RECV, |
5f729eaa | 6656 | .bind = rtnetlink_bind, |
a31f2d17 PNA |
6657 | }; |
6658 | ||
9f00d977 | 6659 | sk = netlink_kernel_create(net, NETLINK_ROUTE, &cfg); |
97c53cac DL |
6660 | if (!sk) |
6661 | return -ENOMEM; | |
97c53cac DL |
6662 | net->rtnl = sk; |
6663 | return 0; | |
6664 | } | |
6665 | ||
2c8c1e72 | 6666 | static void __net_exit rtnetlink_net_exit(struct net *net) |
97c53cac | 6667 | { |
775516bf DL |
6668 | netlink_kernel_release(net->rtnl); |
6669 | net->rtnl = NULL; | |
97c53cac DL |
6670 | } |
6671 | ||
6672 | static struct pernet_operations rtnetlink_net_ops = { | |
6673 | .init = rtnetlink_net_init, | |
6674 | .exit = rtnetlink_net_exit, | |
6675 | }; | |
6676 | ||
1da177e4 LT |
6677 | void __init rtnetlink_init(void) |
6678 | { | |
97c53cac | 6679 | if (register_pernet_subsys(&rtnetlink_net_ops)) |
1da177e4 | 6680 | panic("rtnetlink_init: cannot initialize rtnetlink\n"); |
97c53cac | 6681 | |
1da177e4 | 6682 | register_netdevice_notifier(&rtnetlink_dev_notifier); |
340d17fc | 6683 | |
c7ac8679 | 6684 | rtnl_register(PF_UNSPEC, RTM_GETLINK, rtnl_getlink, |
b97bac64 FW |
6685 | rtnl_dump_ifinfo, 0); |
6686 | rtnl_register(PF_UNSPEC, RTM_SETLINK, rtnl_setlink, NULL, 0); | |
6687 | rtnl_register(PF_UNSPEC, RTM_NEWLINK, rtnl_newlink, NULL, 0); | |
6688 | rtnl_register(PF_UNSPEC, RTM_DELLINK, rtnl_dellink, NULL, 0); | |
687ad8cc | 6689 | |
b97bac64 FW |
6690 | rtnl_register(PF_UNSPEC, RTM_GETADDR, NULL, rtnl_dump_all, 0); |
6691 | rtnl_register(PF_UNSPEC, RTM_GETROUTE, NULL, rtnl_dump_all, 0); | |
6692 | rtnl_register(PF_UNSPEC, RTM_GETNETCONF, NULL, rtnl_dump_all, 0); | |
77162022 | 6693 | |
36fbf1e5 JP |
6694 | rtnl_register(PF_UNSPEC, RTM_NEWLINKPROP, rtnl_newlinkprop, NULL, 0); |
6695 | rtnl_register(PF_UNSPEC, RTM_DELLINKPROP, rtnl_dellinkprop, NULL, 0); | |
6696 | ||
b97bac64 | 6697 | rtnl_register(PF_BRIDGE, RTM_NEWNEIGH, rtnl_fdb_add, NULL, 0); |
9e834259 NA |
6698 | rtnl_register(PF_BRIDGE, RTM_DELNEIGH, rtnl_fdb_del, NULL, |
6699 | RTNL_FLAG_BULK_DEL_SUPPORTED); | |
5b2f94b2 | 6700 | rtnl_register(PF_BRIDGE, RTM_GETNEIGH, rtnl_fdb_get, rtnl_fdb_dump, 0); |
e5a55a89 | 6701 | |
b97bac64 FW |
6702 | rtnl_register(PF_BRIDGE, RTM_GETLINK, NULL, rtnl_bridge_getlink, 0); |
6703 | rtnl_register(PF_BRIDGE, RTM_DELLINK, rtnl_bridge_dellink, NULL, 0); | |
6704 | rtnl_register(PF_BRIDGE, RTM_SETLINK, rtnl_bridge_setlink, NULL, 0); | |
10c9ead9 RP |
6705 | |
6706 | rtnl_register(PF_UNSPEC, RTM_GETSTATS, rtnl_stats_get, rtnl_stats_dump, | |
b97bac64 | 6707 | 0); |
03ba3566 | 6708 | rtnl_register(PF_UNSPEC, RTM_SETSTATS, rtnl_stats_set, NULL, 0); |
cc7f5022 | 6709 | |
ddd17a54 | 6710 | rtnl_register(PF_BRIDGE, RTM_GETMDB, rtnl_mdb_get, rtnl_mdb_dump, 0); |
cc7f5022 | 6711 | rtnl_register(PF_BRIDGE, RTM_NEWMDB, rtnl_mdb_add, NULL, 0); |
2601e9c4 IS |
6712 | rtnl_register(PF_BRIDGE, RTM_DELMDB, rtnl_mdb_del, NULL, |
6713 | RTNL_FLAG_BULK_DEL_SUPPORTED); | |
1da177e4 | 6714 | } |