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batman-adv: iv_ogm_send_to_if, declare char* as const
[deliverable/linux.git] / net / core / rtnetlink.c
CommitLineData
1da177e4
LT		 1/*
2 * INET An implementation of the TCP/IP protocol suite for the LINUX
3 * operating system. INET is implemented using the BSD Socket
4 * interface as the means of communication with the user level.
5 *
6 * Routing netlink socket interface: protocol independent part.
7 *
8 * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
9 *
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License
12 * as published by the Free Software Foundation; either version
13 * 2 of the License, or (at your option) any later version.
14 *
15 * Fixes:
16 * Vitaly E. Lavrov RTA_OK arithmetics was wrong.
17 */
18
1da177e4
LT		 19#include <linux/errno.h>
20#include <linux/module.h>
21#include <linux/types.h>
22#include <linux/socket.h>
23#include <linux/kernel.h>
1da177e4
LT		 24#include <linux/timer.h>
25#include <linux/string.h>
26#include <linux/sockios.h>
27#include <linux/net.h>
28#include <linux/fcntl.h>
29#include <linux/mm.h>
30#include <linux/slab.h>
31#include <linux/interrupt.h>
32#include <linux/capability.h>
33#include <linux/skbuff.h>
34#include <linux/init.h>
35#include <linux/security.h>
6756ae4b 36#include <linux/mutex.h>
1823730f 37#include <linux/if_addr.h>
77162022 38#include <linux/if_bridge.h>
f6f6424b 39#include <linux/if_vlan.h>
ebc08a6f 40#include <linux/pci.h>
77162022 41#include <linux/etherdevice.h>
1da177e4
LT		 42
43#include <asm/uaccess.h>
1da177e4
LT		 44
45#include <linux/inet.h>
46#include <linux/netdevice.h>
82f28412 47#include <net/switchdev.h>
1da177e4
LT		 48#include <net/ip.h>
49#include <net/protocol.h>
50#include <net/arp.h>
51#include <net/route.h>
52#include <net/udp.h>
ea697639 53#include <net/tcp.h>
1da177e4
LT		 54#include <net/sock.h>
55#include <net/pkt_sched.h>
14c0b97d 56#include <net/fib_rules.h>
e2849863 57#include <net/rtnetlink.h>
30ffee84 58#include <net/net_namespace.h>
1da177e4 59
e0d087af 60struct rtnl_link {
e2849863
TG		 61 rtnl_doit_func doit;
62 rtnl_dumpit_func dumpit;
c7ac8679 63 rtnl_calcit_func calcit;
e2849863
TG		 64};
65
6756ae4b 66static DEFINE_MUTEX(rtnl_mutex);
1da177e4
LT		 67
68void rtnl_lock(void)
69{
6756ae4b 70 mutex_lock(&rtnl_mutex);
1da177e4 71}
e0d087af 72EXPORT_SYMBOL(rtnl_lock);
1da177e4 73
6756ae4b 74void __rtnl_unlock(void)
1da177e4 75{
6756ae4b 76 mutex_unlock(&rtnl_mutex);
1da177e4 77}
6756ae4b 78
1da177e4
LT		 79void rtnl_unlock(void)
80{
58ec3b4d 81 /* This fellow will unlock it for us. */
1da177e4
LT		 82 netdev_run_todo();
83}
e0d087af 84EXPORT_SYMBOL(rtnl_unlock);
1da177e4 85
6756ae4b
SH		 86int rtnl_trylock(void)
87{
88 return mutex_trylock(&rtnl_mutex);
89}
e0d087af 90EXPORT_SYMBOL(rtnl_trylock);
6756ae4b 91
c9c1014b
PM		 92int rtnl_is_locked(void)
93{
94 return mutex_is_locked(&rtnl_mutex);
95}
e0d087af 96EXPORT_SYMBOL(rtnl_is_locked);
c9c1014b 97
a898def2
PM		 98#ifdef CONFIG_PROVE_LOCKING
99int lockdep_rtnl_is_held(void)
100{
101 return lockdep_is_held(&rtnl_mutex);
102}
103EXPORT_SYMBOL(lockdep_rtnl_is_held);
104#endif /* #ifdef CONFIG_PROVE_LOCKING */
105
25239cee 106static struct rtnl_link *rtnl_msg_handlers[RTNL_FAMILY_MAX + 1];
e2849863
TG		 107
108static inline int rtm_msgindex(int msgtype)
109{
110 int msgindex = msgtype - RTM_BASE;
111
112 /*
113 * msgindex < 0 implies someone tried to register a netlink
114 * control code. msgindex >= RTM_NR_MSGTYPES may indicate that
115 * the message type has not been added to linux/rtnetlink.h
116 */
117 BUG_ON(msgindex < 0 || msgindex >= RTM_NR_MSGTYPES);
118
119 return msgindex;
120}
121
122static rtnl_doit_func rtnl_get_doit(int protocol, int msgindex)
123{
124 struct rtnl_link *tab;
125
25239cee 126 if (protocol <= RTNL_FAMILY_MAX)
0f87b1dd
PM		 127 tab = rtnl_msg_handlers[protocol];
128 else
129 tab = NULL;
130
51057f2f 131 if (tab == NULL || tab[msgindex].doit == NULL)
e2849863
TG		 132 tab = rtnl_msg_handlers[PF_UNSPEC];
133
c80bbeae 134 return tab[msgindex].doit;
e2849863
TG		 135}
136
137static rtnl_dumpit_func rtnl_get_dumpit(int protocol, int msgindex)
138{
139 struct rtnl_link *tab;
140
25239cee 141 if (protocol <= RTNL_FAMILY_MAX)
0f87b1dd
PM		 142 tab = rtnl_msg_handlers[protocol];
143 else
144 tab = NULL;
145
51057f2f 146 if (tab == NULL || tab[msgindex].dumpit == NULL)
e2849863
TG		 147 tab = rtnl_msg_handlers[PF_UNSPEC];
148
c80bbeae 149 return tab[msgindex].dumpit;
e2849863
TG		 150}
151
c7ac8679
GR		 152static rtnl_calcit_func rtnl_get_calcit(int protocol, int msgindex)
153{
154 struct rtnl_link *tab;
155
156 if (protocol <= RTNL_FAMILY_MAX)
157 tab = rtnl_msg_handlers[protocol];
158 else
159 tab = NULL;
160
161 if (tab == NULL || tab[msgindex].calcit == NULL)
162 tab = rtnl_msg_handlers[PF_UNSPEC];
163
c80bbeae 164 return tab[msgindex].calcit;
c7ac8679
GR		 165}
166
e2849863
TG		 167/**
168 * __rtnl_register - Register a rtnetlink message type
169 * @protocol: Protocol family or PF_UNSPEC
170 * @msgtype: rtnetlink message type
171 * @doit: Function pointer called for each request message
172 * @dumpit: Function pointer called for each dump request (NLM_F_DUMP) message
c7ac8679 173 * @calcit: Function pointer to calc size of dump message
e2849863
TG		 174 *
175 * Registers the specified function pointers (at least one of them has
176 * to be non-NULL) to be called whenever a request message for the
177 * specified protocol family and message type is received.
178 *
179 * The special protocol family PF_UNSPEC may be used to define fallback
180 * function pointers for the case when no entry for the specific protocol
181 * family exists.
182 *
183 * Returns 0 on success or a negative error code.
184 */
185int __rtnl_register(int protocol, int msgtype,
c7ac8679
GR		 186 rtnl_doit_func doit, rtnl_dumpit_func dumpit,
187 rtnl_calcit_func calcit)
e2849863
TG		 188{
189 struct rtnl_link *tab;
190 int msgindex;
191
25239cee 192 BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX);
e2849863
TG		 193 msgindex = rtm_msgindex(msgtype);
194
195 tab = rtnl_msg_handlers[protocol];
196 if (tab == NULL) {
197 tab = kcalloc(RTM_NR_MSGTYPES, sizeof(*tab), GFP_KERNEL);
198 if (tab == NULL)
199 return -ENOBUFS;
200
201 rtnl_msg_handlers[protocol] = tab;
202 }
203
204 if (doit)
205 tab[msgindex].doit = doit;
206
207 if (dumpit)
208 tab[msgindex].dumpit = dumpit;
209
c7ac8679
GR		 210 if (calcit)
211 tab[msgindex].calcit = calcit;
212
e2849863
TG		 213 return 0;
214}
e2849863
TG		 215EXPORT_SYMBOL_GPL(__rtnl_register);
216
217/**
218 * rtnl_register - Register a rtnetlink message type
219 *
220 * Identical to __rtnl_register() but panics on failure. This is useful
221 * as failure of this function is very unlikely, it can only happen due
222 * to lack of memory when allocating the chain to store all message
223 * handlers for a protocol. Meant for use in init functions where lack
25985edc 224 * of memory implies no sense in continuing.
e2849863
TG		 225 */
226void rtnl_register(int protocol, int msgtype,
c7ac8679
GR		 227 rtnl_doit_func doit, rtnl_dumpit_func dumpit,
228 rtnl_calcit_func calcit)
e2849863 229{
c7ac8679 230 if (__rtnl_register(protocol, msgtype, doit, dumpit, calcit) < 0)
e2849863
TG		 231 panic("Unable to register rtnetlink message handler, "
232 "protocol = %d, message type = %d\n",
233 protocol, msgtype);
234}
e2849863
TG		 235EXPORT_SYMBOL_GPL(rtnl_register);
236
237/**
238 * rtnl_unregister - Unregister a rtnetlink message type
239 * @protocol: Protocol family or PF_UNSPEC
240 * @msgtype: rtnetlink message type
241 *
242 * Returns 0 on success or a negative error code.
243 */
244int rtnl_unregister(int protocol, int msgtype)
245{
246 int msgindex;
247
25239cee 248 BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX);
e2849863
TG		 249 msgindex = rtm_msgindex(msgtype);
250
251 if (rtnl_msg_handlers[protocol] == NULL)
252 return -ENOENT;
253
254 rtnl_msg_handlers[protocol][msgindex].doit = NULL;
255 rtnl_msg_handlers[protocol][msgindex].dumpit = NULL;
256
257 return 0;
258}
e2849863
TG		 259EXPORT_SYMBOL_GPL(rtnl_unregister);
260
261/**
262 * rtnl_unregister_all - Unregister all rtnetlink message type of a protocol
263 * @protocol : Protocol family or PF_UNSPEC
264 *
265 * Identical to calling rtnl_unregster() for all registered message types
266 * of a certain protocol family.
267 */
268void rtnl_unregister_all(int protocol)
269{
25239cee 270 BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX);
e2849863
TG		 271
272 kfree(rtnl_msg_handlers[protocol]);
273 rtnl_msg_handlers[protocol] = NULL;
274}
e2849863 275EXPORT_SYMBOL_GPL(rtnl_unregister_all);
1da177e4 276
38f7b870
PM		 277static LIST_HEAD(link_ops);
278
c63044f0
ED		 279static const struct rtnl_link_ops *rtnl_link_ops_get(const char *kind)
280{
281 const struct rtnl_link_ops *ops;
282
283 list_for_each_entry(ops, &link_ops, list) {
284 if (!strcmp(ops->kind, kind))
285 return ops;
286 }
287 return NULL;
288}
289
38f7b870
PM		 290/**
291 * __rtnl_link_register - Register rtnl_link_ops with rtnetlink.
292 * @ops: struct rtnl_link_ops * to register
293 *
294 * The caller must hold the rtnl_mutex. This function should be used
295 * by drivers that create devices during module initialization. It
296 * must be called before registering the devices.
297 *
298 * Returns 0 on success or a negative error code.
299 */
300int __rtnl_link_register(struct rtnl_link_ops *ops)
301{
c63044f0
ED		 302 if (rtnl_link_ops_get(ops->kind))
303 return -EEXIST;
304
b0ab2fab
JP		 305 /* The check for setup is here because if ops
306 * does not have that filled up, it is not possible
307 * to use the ops for creating device. So do not
308 * fill up dellink as well. That disables rtnl_dellink.
309 */
310 if (ops->setup && !ops->dellink)
23289a37 311 ops->dellink = unregister_netdevice_queue;
2d85cba2 312
38f7b870
PM		 313 list_add_tail(&ops->list, &link_ops);
314 return 0;
315}
38f7b870
PM		 316EXPORT_SYMBOL_GPL(__rtnl_link_register);
317
318/**
319 * rtnl_link_register - Register rtnl_link_ops with rtnetlink.
320 * @ops: struct rtnl_link_ops * to register
321 *
322 * Returns 0 on success or a negative error code.
323 */
324int rtnl_link_register(struct rtnl_link_ops *ops)
325{
326 int err;
327
328 rtnl_lock();
329 err = __rtnl_link_register(ops);
330 rtnl_unlock();
331 return err;
332}
38f7b870
PM		 333EXPORT_SYMBOL_GPL(rtnl_link_register);
334
669f87ba
PE		 335static void __rtnl_kill_links(struct net *net, struct rtnl_link_ops *ops)
336{
337 struct net_device *dev;
23289a37
ED		 338 LIST_HEAD(list_kill);
339
669f87ba 340 for_each_netdev(net, dev) {
23289a37
ED		 341 if (dev->rtnl_link_ops == ops)
342 ops->dellink(dev, &list_kill);
669f87ba 343 }
23289a37 344 unregister_netdevice_many(&list_kill);
669f87ba
PE		 345}
346
38f7b870
PM		 347/**
348 * __rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink.
349 * @ops: struct rtnl_link_ops * to unregister
350 *
2d85cba2 351 * The caller must hold the rtnl_mutex.
38f7b870
PM		 352 */
353void __rtnl_link_unregister(struct rtnl_link_ops *ops)
354{
881d966b 355 struct net *net;
2d85cba2 356
881d966b 357 for_each_net(net) {
669f87ba 358 __rtnl_kill_links(net, ops);
2d85cba2 359 }
38f7b870
PM		 360 list_del(&ops->list);
361}
38f7b870
PM		 362EXPORT_SYMBOL_GPL(__rtnl_link_unregister);
363
200b916f
CW		 364/* Return with the rtnl_lock held when there are no network
365 * devices unregistering in any network namespace.
366 */
367static void rtnl_lock_unregistering_all(void)
368{
369 struct net *net;
370 bool unregistering;
ff960a73 371 DEFINE_WAIT_FUNC(wait, woken_wake_function);
200b916f 372
ff960a73 373 add_wait_queue(&netdev_unregistering_wq, &wait);
200b916f 374 for (;;) {
200b916f
CW		 375 unregistering = false;
376 rtnl_lock();
377 for_each_net(net) {
378 if (net->dev_unreg_count > 0) {
379 unregistering = true;
380 break;
381 }
382 }
383 if (!unregistering)
384 break;
385 __rtnl_unlock();
ff960a73
PZ		 386
387 wait_woken(&wait, TASK_UNINTERRUPTIBLE, MAX_SCHEDULE_TIMEOUT);
200b916f 388 }
ff960a73 389 remove_wait_queue(&netdev_unregistering_wq, &wait);
200b916f
CW		 390}
391
38f7b870
PM		 392/**
393 * rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink.
394 * @ops: struct rtnl_link_ops * to unregister
395 */
396void rtnl_link_unregister(struct rtnl_link_ops *ops)
397{
200b916f
CW		 398 /* Close the race with cleanup_net() */
399 mutex_lock(&net_mutex);
400 rtnl_lock_unregistering_all();
38f7b870
PM		 401 __rtnl_link_unregister(ops);
402 rtnl_unlock();
200b916f 403 mutex_unlock(&net_mutex);
38f7b870 404}
38f7b870
PM		 405EXPORT_SYMBOL_GPL(rtnl_link_unregister);
406
ba7d49b1
JP		 407static size_t rtnl_link_get_slave_info_data_size(const struct net_device *dev)
408{
409 struct net_device *master_dev;
410 const struct rtnl_link_ops *ops;
411
412 master_dev = netdev_master_upper_dev_get((struct net_device *) dev);
413 if (!master_dev)
414 return 0;
415 ops = master_dev->rtnl_link_ops;
6049f253 416 if (!ops || !ops->get_slave_size)
ba7d49b1
JP		 417 return 0;
418 /* IFLA_INFO_SLAVE_DATA + nested data */
419 return nla_total_size(sizeof(struct nlattr)) +
420 ops->get_slave_size(master_dev, dev);
421}
422
38f7b870
PM		 423static size_t rtnl_link_get_size(const struct net_device *dev)
424{
425 const struct rtnl_link_ops *ops = dev->rtnl_link_ops;
426 size_t size;
427
428 if (!ops)
429 return 0;
430
369cf77a
TG		 431 size = nla_total_size(sizeof(struct nlattr)) + /* IFLA_LINKINFO */
432 nla_total_size(strlen(ops->kind) + 1); /* IFLA_INFO_KIND */
38f7b870
PM		 433
434 if (ops->get_size)
435 /* IFLA_INFO_DATA + nested data */
369cf77a 436 size += nla_total_size(sizeof(struct nlattr)) +
38f7b870
PM		 437 ops->get_size(dev);
438
439 if (ops->get_xstats_size)
369cf77a
TG		 440 /* IFLA_INFO_XSTATS */
441 size += nla_total_size(ops->get_xstats_size(dev));
38f7b870 442
ba7d49b1
JP		 443 size += rtnl_link_get_slave_info_data_size(dev);
444
38f7b870
PM		 445 return size;
446}
447
f8ff182c
TG		 448static LIST_HEAD(rtnl_af_ops);
449
450static const struct rtnl_af_ops *rtnl_af_lookup(const int family)
451{
452 const struct rtnl_af_ops *ops;
453
454 list_for_each_entry(ops, &rtnl_af_ops, list) {
455 if (ops->family == family)
456 return ops;
457 }
458
459 return NULL;
460}
461
f8ff182c
TG		 462/**
463 * rtnl_af_register - Register rtnl_af_ops with rtnetlink.
464 * @ops: struct rtnl_af_ops * to register
465 *
466 * Returns 0 on success or a negative error code.
467 */
3678a9d8 468void rtnl_af_register(struct rtnl_af_ops *ops)
f8ff182c 469{
f8ff182c 470 rtnl_lock();
3678a9d8 471 list_add_tail(&ops->list, &rtnl_af_ops);
f8ff182c 472 rtnl_unlock();
f8ff182c
TG		 473}
474EXPORT_SYMBOL_GPL(rtnl_af_register);
475
476/**
477 * __rtnl_af_unregister - Unregister rtnl_af_ops from rtnetlink.
478 * @ops: struct rtnl_af_ops * to unregister
479 *
480 * The caller must hold the rtnl_mutex.
481 */
482void __rtnl_af_unregister(struct rtnl_af_ops *ops)
483{
484 list_del(&ops->list);
485}
486EXPORT_SYMBOL_GPL(__rtnl_af_unregister);
487
488/**
489 * rtnl_af_unregister - Unregister rtnl_af_ops from rtnetlink.
490 * @ops: struct rtnl_af_ops * to unregister
491 */
492void rtnl_af_unregister(struct rtnl_af_ops *ops)
493{
494 rtnl_lock();
495 __rtnl_af_unregister(ops);
496 rtnl_unlock();
497}
498EXPORT_SYMBOL_GPL(rtnl_af_unregister);
499
500static size_t rtnl_link_get_af_size(const struct net_device *dev)
501{
502 struct rtnl_af_ops *af_ops;
503 size_t size;
504
505 /* IFLA_AF_SPEC */
506 size = nla_total_size(sizeof(struct nlattr));
507
508 list_for_each_entry(af_ops, &rtnl_af_ops, list) {
509 if (af_ops->get_link_af_size) {
510 /* AF_* + nested data */
511 size += nla_total_size(sizeof(struct nlattr)) +
512 af_ops->get_link_af_size(dev);
513 }
514 }
515
516 return size;
517}
518
ba7d49b1 519static bool rtnl_have_link_slave_info(const struct net_device *dev)
38f7b870 520{
ba7d49b1 521 struct net_device *master_dev;
38f7b870 522
ba7d49b1 523 master_dev = netdev_master_upper_dev_get((struct net_device *) dev);
813f020c 524 if (master_dev && master_dev->rtnl_link_ops)
ba7d49b1
JP		 525 return true;
526 return false;
527}
528
529static int rtnl_link_slave_info_fill(struct sk_buff *skb,
530 const struct net_device *dev)
531{
532 struct net_device *master_dev;
533 const struct rtnl_link_ops *ops;
534 struct nlattr *slave_data;
535 int err;
38f7b870 536
ba7d49b1
JP		 537 master_dev = netdev_master_upper_dev_get((struct net_device *) dev);
538 if (!master_dev)
539 return 0;
540 ops = master_dev->rtnl_link_ops;
541 if (!ops)
542 return 0;
543 if (nla_put_string(skb, IFLA_INFO_SLAVE_KIND, ops->kind) < 0)
544 return -EMSGSIZE;
545 if (ops->fill_slave_info) {
546 slave_data = nla_nest_start(skb, IFLA_INFO_SLAVE_DATA);
547 if (!slave_data)
548 return -EMSGSIZE;
549 err = ops->fill_slave_info(skb, master_dev, dev);
550 if (err < 0)
551 goto err_cancel_slave_data;
552 nla_nest_end(skb, slave_data);
553 }
554 return 0;
555
556err_cancel_slave_data:
557 nla_nest_cancel(skb, slave_data);
558 return err;
559}
560
561static int rtnl_link_info_fill(struct sk_buff *skb,
562 const struct net_device *dev)
563{
564 const struct rtnl_link_ops *ops = dev->rtnl_link_ops;
565 struct nlattr *data;
566 int err;
567
568 if (!ops)
569 return 0;
38f7b870 570 if (nla_put_string(skb, IFLA_INFO_KIND, ops->kind) < 0)
ba7d49b1 571 return -EMSGSIZE;
38f7b870
PM		 572 if (ops->fill_xstats) {
573 err = ops->fill_xstats(skb, dev);
574 if (err < 0)
ba7d49b1 575 return err;
38f7b870
PM		 576 }
577 if (ops->fill_info) {
578 data = nla_nest_start(skb, IFLA_INFO_DATA);
ba7d49b1
JP		 579 if (data == NULL)
580 return -EMSGSIZE;
38f7b870
PM		 581 err = ops->fill_info(skb, dev);
582 if (err < 0)
583 goto err_cancel_data;
584 nla_nest_end(skb, data);
585 }
38f7b870
PM		 586 return 0;
587
588err_cancel_data:
589 nla_nest_cancel(skb, data);
ba7d49b1
JP		 590 return err;
591}
592
593static int rtnl_link_fill(struct sk_buff *skb, const struct net_device *dev)
594{
595 struct nlattr *linkinfo;
596 int err = -EMSGSIZE;
597
598 linkinfo = nla_nest_start(skb, IFLA_LINKINFO);
599 if (linkinfo == NULL)
600 goto out;
601
602 err = rtnl_link_info_fill(skb, dev);
603 if (err < 0)
604 goto err_cancel_link;
605
606 err = rtnl_link_slave_info_fill(skb, dev);
607 if (err < 0)
608 goto err_cancel_link;
609
610 nla_nest_end(skb, linkinfo);
611 return 0;
612
38f7b870
PM		 613err_cancel_link:
614 nla_nest_cancel(skb, linkinfo);
615out:
616 return err;
617}
618
95c96174 619int rtnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, unsigned int group, int echo)
1da177e4 620{
97c53cac 621 struct sock *rtnl = net->rtnl;
1da177e4
LT		 622 int err = 0;
623
ac6d439d 624 NETLINK_CB(skb).dst_group = group;
1da177e4
LT		 625 if (echo)
626 atomic_inc(&skb->users);
627 netlink_broadcast(rtnl, skb, pid, group, GFP_KERNEL);
628 if (echo)
629 err = netlink_unicast(rtnl, skb, pid, MSG_DONTWAIT);
630 return err;
631}
632
97c53cac 633int rtnl_unicast(struct sk_buff *skb, struct net *net, u32 pid)
2942e900 634{
97c53cac
DL		 635 struct sock *rtnl = net->rtnl;
636
2942e900
TG		 637 return nlmsg_unicast(rtnl, skb, pid);
638}
e0d087af 639EXPORT_SYMBOL(rtnl_unicast);
2942e900 640
1ce85fe4
PNA		 641void rtnl_notify(struct sk_buff *skb, struct net *net, u32 pid, u32 group,
642 struct nlmsghdr *nlh, gfp_t flags)
97676b6b 643{
97c53cac 644 struct sock *rtnl = net->rtnl;
97676b6b
TG		 645 int report = 0;
646
647 if (nlh)
648 report = nlmsg_report(nlh);
649
1ce85fe4 650 nlmsg_notify(rtnl, skb, pid, group, report, flags);
97676b6b 651}
e0d087af 652EXPORT_SYMBOL(rtnl_notify);
97676b6b 653
97c53cac 654void rtnl_set_sk_err(struct net *net, u32 group, int error)
97676b6b 655{
97c53cac
DL		 656 struct sock *rtnl = net->rtnl;
657
97676b6b
TG		 658 netlink_set_err(rtnl, 0, group, error);
659}
e0d087af 660EXPORT_SYMBOL(rtnl_set_sk_err);
97676b6b 661
1da177e4
LT		 662int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics)
663{
2d7202bf
TG		 664 struct nlattr *mx;
665 int i, valid = 0;
666
667 mx = nla_nest_start(skb, RTA_METRICS);
668 if (mx == NULL)
669 return -ENOBUFS;
670
671 for (i = 0; i < RTAX_MAX; i++) {
672 if (metrics[i]) {
ea697639
DB		 673 if (i == RTAX_CC_ALGO - 1) {
674 char tmp[TCP_CA_NAME_MAX], *name;
675
676 name = tcp_ca_get_name_by_key(metrics[i], tmp);
677 if (!name)
678 continue;
679 if (nla_put_string(skb, i + 1, name))
680 goto nla_put_failure;
681 } else {
682 if (nla_put_u32(skb, i + 1, metrics[i]))
683 goto nla_put_failure;
684 }
2d7202bf 685 valid++;
2d7202bf 686 }
1da177e4 687 }
1da177e4 688
a57d27fc
DM		 689 if (!valid) {
690 nla_nest_cancel(skb, mx);
691 return 0;
692 }
2d7202bf
TG		 693
694 return nla_nest_end(skb, mx);
695
696nla_put_failure:
bc3ed28c
TG		 697 nla_nest_cancel(skb, mx);
698 return -EMSGSIZE;
1da177e4 699}
e0d087af 700EXPORT_SYMBOL(rtnetlink_put_metrics);
1da177e4 701
e3703b3d 702int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst, u32 id,
87a50699 703 long expires, u32 error)
e3703b3d
TG		 704{
705 struct rta_cacheinfo ci = {
a399a805 706 .rta_lastuse = jiffies_delta_to_clock_t(jiffies - dst->lastuse),
e3703b3d
TG		 707 .rta_used = dst->__use,
708 .rta_clntref = atomic_read(&(dst->__refcnt)),
709 .rta_error = error,
710 .rta_id = id,
e3703b3d
TG		 711 };
712
8253947e
LW		 713 if (expires) {
714 unsigned long clock;
e3703b3d 715
8253947e
LW		 716 clock = jiffies_to_clock_t(abs(expires));
717 clock = min_t(unsigned long, clock, INT_MAX);
718 ci.rta_expires = (expires > 0) ? clock : -clock;
719 }
e3703b3d
TG		 720 return nla_put(skb, RTA_CACHEINFO, sizeof(ci), &ci);
721}
e3703b3d 722EXPORT_SYMBOL_GPL(rtnl_put_cacheinfo);
1da177e4 723
93b2d4a2 724static void set_operstate(struct net_device *dev, unsigned char transition)
b00055aa
SR		 725{
726 unsigned char operstate = dev->operstate;
727
e0d087af 728 switch (transition) {
b00055aa
SR		 729 case IF_OPER_UP:
730 if ((operstate == IF_OPER_DORMANT ||
731 operstate == IF_OPER_UNKNOWN) &&
732 !netif_dormant(dev))
733 operstate = IF_OPER_UP;
734 break;
735
736 case IF_OPER_DORMANT:
737 if (operstate == IF_OPER_UP ||
738 operstate == IF_OPER_UNKNOWN)
739 operstate = IF_OPER_DORMANT;
740 break;
3ff50b79 741 }
b00055aa
SR		 742
743 if (dev->operstate != operstate) {
744 write_lock_bh(&dev_base_lock);
745 dev->operstate = operstate;
746 write_unlock_bh(&dev_base_lock);
93b2d4a2
DM		 747 netdev_state_change(dev);
748 }
b00055aa
SR		 749}
750
b1beb681
JB		 751static unsigned int rtnl_dev_get_flags(const struct net_device *dev)
752{
753 return (dev->flags & ~(IFF_PROMISC | IFF_ALLMULTI)) |
754 (dev->gflags & (IFF_PROMISC | IFF_ALLMULTI));
755}
756
3729d502
PM		 757static unsigned int rtnl_dev_combine_flags(const struct net_device *dev,
758 const struct ifinfomsg *ifm)
759{
760 unsigned int flags = ifm->ifi_flags;
761
762 /* bugwards compatibility: ifi_change == 0 is treated as ~0 */
763 if (ifm->ifi_change)
764 flags = (flags & ifm->ifi_change) |
b1beb681 765 (rtnl_dev_get_flags(dev) & ~ifm->ifi_change);
3729d502
PM		 766
767 return flags;
768}
769
b60c5115 770static void copy_rtnl_link_stats(struct rtnl_link_stats *a,
be1f3c2c 771 const struct rtnl_link_stats64 *b)
1da177e4 772{
b60c5115
TG		 773 a->rx_packets = b->rx_packets;
774 a->tx_packets = b->tx_packets;
775 a->rx_bytes = b->rx_bytes;
776 a->tx_bytes = b->tx_bytes;
777 a->rx_errors = b->rx_errors;
778 a->tx_errors = b->tx_errors;
779 a->rx_dropped = b->rx_dropped;
780 a->tx_dropped = b->tx_dropped;
781
782 a->multicast = b->multicast;
783 a->collisions = b->collisions;
784
785 a->rx_length_errors = b->rx_length_errors;
786 a->rx_over_errors = b->rx_over_errors;
787 a->rx_crc_errors = b->rx_crc_errors;
788 a->rx_frame_errors = b->rx_frame_errors;
789 a->rx_fifo_errors = b->rx_fifo_errors;
790 a->rx_missed_errors = b->rx_missed_errors;
791
792 a->tx_aborted_errors = b->tx_aborted_errors;
793 a->tx_carrier_errors = b->tx_carrier_errors;
794 a->tx_fifo_errors = b->tx_fifo_errors;
795 a->tx_heartbeat_errors = b->tx_heartbeat_errors;
796 a->tx_window_errors = b->tx_window_errors;
797
798 a->rx_compressed = b->rx_compressed;
799 a->tx_compressed = b->tx_compressed;
10708f37
JE		 800}
801
be1f3c2c 802static void copy_rtnl_link_stats64(void *v, const struct rtnl_link_stats64 *b)
10708f37 803{
afdcba37 804 memcpy(v, b, sizeof(*b));
10708f37 805}
1da177e4 806
c02db8c6 807/* All VF info */
115c9b81
GR		 808static inline int rtnl_vfinfo_size(const struct net_device *dev,
809 u32 ext_filter_mask)
ebc08a6f 810{
115c9b81
GR		 811 if (dev->dev.parent && dev_is_pci(dev->dev.parent) &&
812 (ext_filter_mask & RTEXT_FILTER_VF)) {
c02db8c6 813 int num_vfs = dev_num_vf(dev->dev.parent);
045de01a
SF		 814 size_t size = nla_total_size(sizeof(struct nlattr));
815 size += nla_total_size(num_vfs * sizeof(struct nlattr));
816 size += num_vfs *
817 (nla_total_size(sizeof(struct ifla_vf_mac)) +
818 nla_total_size(sizeof(struct ifla_vf_vlan)) +
ed616689 819 nla_total_size(sizeof(struct ifla_vf_spoofchk)) +
945a3676 820 nla_total_size(sizeof(struct ifla_vf_rate)) +
01a3d796
VZ		 821 nla_total_size(sizeof(struct ifla_vf_link_state)) +
822 nla_total_size(sizeof(struct ifla_vf_rss_query_en)));
c02db8c6
CW		 823 return size;
824 } else
ebc08a6f
WM		 825 return 0;
826}
827
c53864fd
DG		 828static size_t rtnl_port_size(const struct net_device *dev,
829 u32 ext_filter_mask)
57b61080
SF		 830{
831 size_t port_size = nla_total_size(4) /* PORT_VF */
832 + nla_total_size(PORT_PROFILE_MAX) /* PORT_PROFILE */
833 + nla_total_size(sizeof(struct ifla_port_vsi))
834 /* PORT_VSI_TYPE */
835 + nla_total_size(PORT_UUID_MAX) /* PORT_INSTANCE_UUID */
836 + nla_total_size(PORT_UUID_MAX) /* PORT_HOST_UUID */
837 + nla_total_size(1) /* PROT_VDP_REQUEST */
838 + nla_total_size(2); /* PORT_VDP_RESPONSE */
839 size_t vf_ports_size = nla_total_size(sizeof(struct nlattr));
840 size_t vf_port_size = nla_total_size(sizeof(struct nlattr))
841 + port_size;
842 size_t port_self_size = nla_total_size(sizeof(struct nlattr))
843 + port_size;
844
c53864fd
DG		 845 if (!dev->netdev_ops->ndo_get_vf_port || !dev->dev.parent ||
846 !(ext_filter_mask & RTEXT_FILTER_VF))
57b61080
SF		 847 return 0;
848 if (dev_num_vf(dev->dev.parent))
849 return port_self_size + vf_ports_size +
850 vf_port_size * dev_num_vf(dev->dev.parent);
851 else
852 return port_self_size;
853}
854
115c9b81
GR		 855static noinline size_t if_nlmsg_size(const struct net_device *dev,
856 u32 ext_filter_mask)
339bf98f
TG		 857{
858 return NLMSG_ALIGN(sizeof(struct ifinfomsg))
859 + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */
0b815a1a 860 + nla_total_size(IFALIASZ) /* IFLA_IFALIAS */
339bf98f
TG		 861 + nla_total_size(IFNAMSIZ) /* IFLA_QDISC */
862 + nla_total_size(sizeof(struct rtnl_link_ifmap))
863 + nla_total_size(sizeof(struct rtnl_link_stats))
adcfe196 864 + nla_total_size(sizeof(struct rtnl_link_stats64))
339bf98f
TG		 865 + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */
866 + nla_total_size(MAX_ADDR_LEN) /* IFLA_BROADCAST */
867 + nla_total_size(4) /* IFLA_TXQLEN */
868 + nla_total_size(4) /* IFLA_WEIGHT */
869 + nla_total_size(4) /* IFLA_MTU */
870 + nla_total_size(4) /* IFLA_LINK */
871 + nla_total_size(4) /* IFLA_MASTER */
9a57247f 872 + nla_total_size(1) /* IFLA_CARRIER */
edbc0bb3 873 + nla_total_size(4) /* IFLA_PROMISCUITY */
76ff5cc9
JP		 874 + nla_total_size(4) /* IFLA_NUM_TX_QUEUES */
875 + nla_total_size(4) /* IFLA_NUM_RX_QUEUES */
339bf98f 876 + nla_total_size(1) /* IFLA_OPERSTATE */
38f7b870 877 + nla_total_size(1) /* IFLA_LINKMODE */
2d3b479d 878 + nla_total_size(4) /* IFLA_CARRIER_CHANGES */
d37512a2 879 + nla_total_size(4) /* IFLA_LINK_NETNSID */
115c9b81
GR		 880 + nla_total_size(ext_filter_mask
881 & RTEXT_FILTER_VF ? 4 : 0) /* IFLA_NUM_VF */
882 + rtnl_vfinfo_size(dev, ext_filter_mask) /* IFLA_VFINFO_LIST */
c53864fd 883 + rtnl_port_size(dev, ext_filter_mask) /* IFLA_VF_PORTS + IFLA_PORT_SELF */
f8ff182c 884 + rtnl_link_get_size(dev) /* IFLA_LINKINFO */
66cae9ed 885 + rtnl_link_get_af_size(dev) /* IFLA_AF_SPEC */
82f28412
JP		 886 + nla_total_size(MAX_PHYS_ITEM_ID_LEN) /* IFLA_PHYS_PORT_ID */
887 + nla_total_size(MAX_PHYS_ITEM_ID_LEN); /* IFLA_PHYS_SWITCH_ID */
339bf98f
TG		 888}
889
57b61080
SF		 890static int rtnl_vf_ports_fill(struct sk_buff *skb, struct net_device *dev)
891{
892 struct nlattr *vf_ports;
893 struct nlattr *vf_port;
894 int vf;
895 int err;
896
897 vf_ports = nla_nest_start(skb, IFLA_VF_PORTS);
898 if (!vf_ports)
899 return -EMSGSIZE;
900
901 for (vf = 0; vf < dev_num_vf(dev->dev.parent); vf++) {
902 vf_port = nla_nest_start(skb, IFLA_VF_PORT);
8ca94183
SF		 903 if (!vf_port)
904 goto nla_put_failure;
a6574349
DM		 905 if (nla_put_u32(skb, IFLA_PORT_VF, vf))
906 goto nla_put_failure;
57b61080 907 err = dev->netdev_ops->ndo_get_vf_port(dev, vf, skb);
8ca94183
SF		 908 if (err == -EMSGSIZE)
909 goto nla_put_failure;
57b61080 910 if (err) {
57b61080
SF		 911 nla_nest_cancel(skb, vf_port);
912 continue;
913 }
914 nla_nest_end(skb, vf_port);
915 }
916
917 nla_nest_end(skb, vf_ports);
918
919 return 0;
8ca94183
SF		 920
921nla_put_failure:
922 nla_nest_cancel(skb, vf_ports);
923 return -EMSGSIZE;
57b61080
SF		 924}
925
926static int rtnl_port_self_fill(struct sk_buff *skb, struct net_device *dev)
927{
928 struct nlattr *port_self;
929 int err;
930
931 port_self = nla_nest_start(skb, IFLA_PORT_SELF);
932 if (!port_self)
933 return -EMSGSIZE;
934
935 err = dev->netdev_ops->ndo_get_vf_port(dev, PORT_SELF_VF, skb);
936 if (err) {
937 nla_nest_cancel(skb, port_self);
8ca94183 938 return (err == -EMSGSIZE) ? err : 0;
57b61080
SF		 939 }
940
941 nla_nest_end(skb, port_self);
942
943 return 0;
944}
945
c53864fd
DG		 946static int rtnl_port_fill(struct sk_buff *skb, struct net_device *dev,
947 u32 ext_filter_mask)
57b61080
SF		 948{
949 int err;
950
c53864fd
DG		 951 if (!dev->netdev_ops->ndo_get_vf_port || !dev->dev.parent ||
952 !(ext_filter_mask & RTEXT_FILTER_VF))
57b61080
SF		 953 return 0;
954
955 err = rtnl_port_self_fill(skb, dev);
956 if (err)
957 return err;
958
959 if (dev_num_vf(dev->dev.parent)) {
960 err = rtnl_vf_ports_fill(skb, dev);
961 if (err)
962 return err;
963 }
964
965 return 0;
966}
967
66cae9ed
JP		 968static int rtnl_phys_port_id_fill(struct sk_buff *skb, struct net_device *dev)
969{
970 int err;
02637fce 971 struct netdev_phys_item_id ppid;
66cae9ed
JP		 972
973 err = dev_get_phys_port_id(dev, &ppid);
974 if (err) {
975 if (err == -EOPNOTSUPP)
976 return 0;
977 return err;
978 }
979
980 if (nla_put(skb, IFLA_PHYS_PORT_ID, ppid.id_len, ppid.id))
981 return -EMSGSIZE;
982
983 return 0;
984}
985
db24a904
DA		 986static int rtnl_phys_port_name_fill(struct sk_buff *skb, struct net_device *dev)
987{
988 char name[IFNAMSIZ];
989 int err;
990
991 err = dev_get_phys_port_name(dev, name, sizeof(name));
992 if (err) {
993 if (err == -EOPNOTSUPP)
994 return 0;
995 return err;
996 }
997
998 if (nla_put(skb, IFLA_PHYS_PORT_NAME, strlen(name), name))
999 return -EMSGSIZE;
1000
1001 return 0;
1002}
1003
82f28412
JP		 1004static int rtnl_phys_switch_id_fill(struct sk_buff *skb, struct net_device *dev)
1005{
1006 int err;
f8e20a9f
SF		 1007 struct switchdev_attr attr = {
1008 .id = SWITCHDEV_ATTR_PORT_PARENT_ID,
1009 .flags = SWITCHDEV_F_NO_RECURSE,
1010 };
82f28412 1011
f8e20a9f 1012 err = switchdev_port_attr_get(dev, &attr);
82f28412
JP		 1013 if (err) {
1014 if (err == -EOPNOTSUPP)
1015 return 0;
1016 return err;
1017 }
1018
42275bd8
SF		 1019 if (nla_put(skb, IFLA_PHYS_SWITCH_ID, attr.u.ppid.id_len,
1020 attr.u.ppid.id))
82f28412
JP		 1021 return -EMSGSIZE;
1022
1023 return 0;
1024}
1025
b60c5115 1026static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev,
575c3e2a 1027 int type, u32 pid, u32 seq, u32 change,
115c9b81 1028 unsigned int flags, u32 ext_filter_mask)
b60c5115
TG		 1029{
1030 struct ifinfomsg *ifm;
1031 struct nlmsghdr *nlh;
28172739 1032 struct rtnl_link_stats64 temp;
be1f3c2c 1033 const struct rtnl_link_stats64 *stats;
f8ff182c
TG		 1034 struct nlattr *attr, *af_spec;
1035 struct rtnl_af_ops *af_ops;
898e5061 1036 struct net_device *upper_dev = netdev_master_upper_dev_get(dev);
1da177e4 1037
2907c35f 1038 ASSERT_RTNL();
b60c5115
TG		 1039 nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ifm), flags);
1040 if (nlh == NULL)
26932566 1041 return -EMSGSIZE;
1da177e4 1042
b60c5115
TG		 1043 ifm = nlmsg_data(nlh);
1044 ifm->ifi_family = AF_UNSPEC;
1045 ifm->__ifi_pad = 0;
1046 ifm->ifi_type = dev->type;
1047 ifm->ifi_index = dev->ifindex;
1048 ifm->ifi_flags = dev_get_flags(dev);
1049 ifm->ifi_change = change;
1050
a6574349
DM		 1051 if (nla_put_string(skb, IFLA_IFNAME, dev->name) ||
1052 nla_put_u32(skb, IFLA_TXQLEN, dev->tx_queue_len) ||
1053 nla_put_u8(skb, IFLA_OPERSTATE,
1054 netif_running(dev) ? dev->operstate : IF_OPER_DOWN) ||
1055 nla_put_u8(skb, IFLA_LINKMODE, dev->link_mode) ||
1056 nla_put_u32(skb, IFLA_MTU, dev->mtu) ||
1057 nla_put_u32(skb, IFLA_GROUP, dev->group) ||
edbc0bb3 1058 nla_put_u32(skb, IFLA_PROMISCUITY, dev->promiscuity) ||
76ff5cc9 1059 nla_put_u32(skb, IFLA_NUM_TX_QUEUES, dev->num_tx_queues) ||
1d69c2b3 1060#ifdef CONFIG_RPS
76ff5cc9 1061 nla_put_u32(skb, IFLA_NUM_RX_QUEUES, dev->num_rx_queues) ||
1d69c2b3 1062#endif
a54acb3a
ND		 1063 (dev->ifindex != dev_get_iflink(dev) &&
1064 nla_put_u32(skb, IFLA_LINK, dev_get_iflink(dev))) ||
898e5061
JP		 1065 (upper_dev &&
1066 nla_put_u32(skb, IFLA_MASTER, upper_dev->ifindex)) ||
9a57247f 1067 nla_put_u8(skb, IFLA_CARRIER, netif_carrier_ok(dev)) ||
a6574349
DM		 1068 (dev->qdisc &&
1069 nla_put_string(skb, IFLA_QDISC, dev->qdisc->ops->id)) ||
1070 (dev->ifalias &&
2d3b479d 1071 nla_put_string(skb, IFLA_IFALIAS, dev->ifalias)) ||
1072 nla_put_u32(skb, IFLA_CARRIER_CHANGES,
1073 atomic_read(&dev->carrier_changes)))
a6574349 1074 goto nla_put_failure;
0b815a1a 1075
1da177e4
LT		 1076 if (1) {
1077 struct rtnl_link_ifmap map = {
1078 .mem_start = dev->mem_start,
1079 .mem_end = dev->mem_end,
1080 .base_addr = dev->base_addr,
1081 .irq = dev->irq,
1082 .dma = dev->dma,
1083 .port = dev->if_port,
1084 };
a6574349
DM		 1085 if (nla_put(skb, IFLA_MAP, sizeof(map), &map))
1086 goto nla_put_failure;
1da177e4
LT		 1087 }
1088
1089 if (dev->addr_len) {
a6574349
DM		 1090 if (nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr) ||
1091 nla_put(skb, IFLA_BROADCAST, dev->addr_len, dev->broadcast))
1092 goto nla_put_failure;
1da177e4
LT		 1093 }
1094
66cae9ed
JP		 1095 if (rtnl_phys_port_id_fill(skb, dev))
1096 goto nla_put_failure;
1097
db24a904
DA		 1098 if (rtnl_phys_port_name_fill(skb, dev))
1099 goto nla_put_failure;
1100
82f28412
JP		 1101 if (rtnl_phys_switch_id_fill(skb, dev))
1102 goto nla_put_failure;
1103
96e74088
PE		 1104 attr = nla_reserve(skb, IFLA_STATS,
1105 sizeof(struct rtnl_link_stats));
1106 if (attr == NULL)
1107 goto nla_put_failure;
b60c5115 1108
28172739 1109 stats = dev_get_stats(dev, &temp);
96e74088 1110 copy_rtnl_link_stats(nla_data(attr), stats);
1da177e4 1111
10708f37
JE		 1112 attr = nla_reserve(skb, IFLA_STATS64,
1113 sizeof(struct rtnl_link_stats64));
1114 if (attr == NULL)
1115 goto nla_put_failure;
10708f37
JE		 1116 copy_rtnl_link_stats64(nla_data(attr), stats);
1117
a6574349
DM		 1118 if (dev->dev.parent && (ext_filter_mask & RTEXT_FILTER_VF) &&
1119 nla_put_u32(skb, IFLA_NUM_VF, dev_num_vf(dev->dev.parent)))
1120 goto nla_put_failure;
57b61080 1121
115c9b81
GR		 1122 if (dev->netdev_ops->ndo_get_vf_config && dev->dev.parent
1123 && (ext_filter_mask & RTEXT_FILTER_VF)) {
ebc08a6f 1124 int i;
ebc08a6f 1125
c02db8c6
CW		 1126 struct nlattr *vfinfo, *vf;
1127 int num_vfs = dev_num_vf(dev->dev.parent);
1128
c02db8c6
CW		 1129 vfinfo = nla_nest_start(skb, IFLA_VFINFO_LIST);
1130 if (!vfinfo)
1131 goto nla_put_failure;
1132 for (i = 0; i < num_vfs; i++) {
1133 struct ifla_vf_info ivi;
1134 struct ifla_vf_mac vf_mac;
1135 struct ifla_vf_vlan vf_vlan;
ed616689 1136 struct ifla_vf_rate vf_rate;
c02db8c6 1137 struct ifla_vf_tx_rate vf_tx_rate;
5f8444a3 1138 struct ifla_vf_spoofchk vf_spoofchk;
1d8faf48 1139 struct ifla_vf_link_state vf_linkstate;
01a3d796 1140 struct ifla_vf_rss_query_en vf_rss_query_en;
5f8444a3
GR		 1141
1142 /*
1143 * Not all SR-IOV capable drivers support the
01a3d796
VZ		 1144 * spoofcheck and "RSS query enable" query. Preset to
1145 * -1 so the user space tool can detect that the driver
1146 * didn't report anything.
5f8444a3
GR		 1147 */
1148 ivi.spoofchk = -1;
01a3d796 1149 ivi.rss_query_en = -1;
84d73cd3 1150 memset(ivi.mac, 0, sizeof(ivi.mac));
1d8faf48
RE		 1151 /* The default value for VF link state is "auto"
1152 * IFLA_VF_LINK_STATE_AUTO which equals zero
1153 */
1154 ivi.linkstate = 0;
ebc08a6f
WM		 1155 if (dev->netdev_ops->ndo_get_vf_config(dev, i, &ivi))
1156 break;
5f8444a3
GR		 1157 vf_mac.vf =
1158 vf_vlan.vf =
ed616689 1159 vf_rate.vf =
5f8444a3 1160 vf_tx_rate.vf =
1d8faf48 1161 vf_spoofchk.vf =
01a3d796
VZ		 1162 vf_linkstate.vf =
1163 vf_rss_query_en.vf = ivi.vf;
5f8444a3 1164
c02db8c6
CW		 1165 memcpy(vf_mac.mac, ivi.mac, sizeof(ivi.mac));
1166 vf_vlan.vlan = ivi.vlan;
1167 vf_vlan.qos = ivi.qos;
ed616689
SC		 1168 vf_tx_rate.rate = ivi.max_tx_rate;
1169 vf_rate.min_tx_rate = ivi.min_tx_rate;
1170 vf_rate.max_tx_rate = ivi.max_tx_rate;
5f8444a3 1171 vf_spoofchk.setting = ivi.spoofchk;
1d8faf48 1172 vf_linkstate.link_state = ivi.linkstate;
01a3d796 1173 vf_rss_query_en.setting = ivi.rss_query_en;
c02db8c6
CW		 1174 vf = nla_nest_start(skb, IFLA_VF_INFO);
1175 if (!vf) {
1176 nla_nest_cancel(skb, vfinfo);
1177 goto nla_put_failure;
1178 }
a6574349
DM		 1179 if (nla_put(skb, IFLA_VF_MAC, sizeof(vf_mac), &vf_mac) ||
1180 nla_put(skb, IFLA_VF_VLAN, sizeof(vf_vlan), &vf_vlan) ||
ed616689
SC		 1181 nla_put(skb, IFLA_VF_RATE, sizeof(vf_rate),
1182 &vf_rate) ||
a6574349
DM		 1183 nla_put(skb, IFLA_VF_TX_RATE, sizeof(vf_tx_rate),
1184 &vf_tx_rate) ||
1185 nla_put(skb, IFLA_VF_SPOOFCHK, sizeof(vf_spoofchk),
1d8faf48
RE		 1186 &vf_spoofchk) ||
1187 nla_put(skb, IFLA_VF_LINK_STATE, sizeof(vf_linkstate),
01a3d796
VZ		 1188 &vf_linkstate) ||
1189 nla_put(skb, IFLA_VF_RSS_QUERY_EN,
1190 sizeof(vf_rss_query_en),
1191 &vf_rss_query_en))
a6574349 1192 goto nla_put_failure;
c02db8c6 1193 nla_nest_end(skb, vf);
ebc08a6f 1194 }
c02db8c6 1195 nla_nest_end(skb, vfinfo);
ebc08a6f 1196 }
57b61080 1197
c53864fd 1198 if (rtnl_port_fill(skb, dev, ext_filter_mask))
57b61080
SF		 1199 goto nla_put_failure;
1200
ba7d49b1 1201 if (dev->rtnl_link_ops || rtnl_have_link_slave_info(dev)) {
38f7b870
PM		 1202 if (rtnl_link_fill(skb, dev) < 0)
1203 goto nla_put_failure;
1204 }
1205
d37512a2
ND		 1206 if (dev->rtnl_link_ops &&
1207 dev->rtnl_link_ops->get_link_net) {
1208 struct net *link_net = dev->rtnl_link_ops->get_link_net(dev);
1209
1210 if (!net_eq(dev_net(dev), link_net)) {
7a0877d4 1211 int id = peernet2id_alloc(dev_net(dev), link_net);
d37512a2
ND		 1212
1213 if (nla_put_s32(skb, IFLA_LINK_NETNSID, id))
1214 goto nla_put_failure;
1215 }
1216 }
1217
f8ff182c
TG		 1218 if (!(af_spec = nla_nest_start(skb, IFLA_AF_SPEC)))
1219 goto nla_put_failure;
1220
1221 list_for_each_entry(af_ops, &rtnl_af_ops, list) {
1222 if (af_ops->fill_link_af) {
1223 struct nlattr *af;
1224 int err;
1225
1226 if (!(af = nla_nest_start(skb, af_ops->family)))
1227 goto nla_put_failure;
1228
1229 err = af_ops->fill_link_af(skb, dev);
1230
1231 /*
1232 * Caller may return ENODATA to indicate that there
1233 * was no data to be dumped. This is not an error, it
1234 * means we should trim the attribute header and
1235 * continue.
1236 */
1237 if (err == -ENODATA)
1238 nla_nest_cancel(skb, af);
1239 else if (err < 0)
1240 goto nla_put_failure;
1241
1242 nla_nest_end(skb, af);
1243 }
1244 }
1245
1246 nla_nest_end(skb, af_spec);
1247
053c095a
JB		 1248 nlmsg_end(skb, nlh);
1249 return 0;
b60c5115
TG		 1250
1251nla_put_failure:
26932566
PM		 1252 nlmsg_cancel(skb, nlh);
1253 return -EMSGSIZE;
1da177e4
LT		 1254}
1255
f7b12606 1256static const struct nla_policy ifla_policy[IFLA_MAX+1] = {
5176f91e 1257 [IFLA_IFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ-1 },
38f7b870
PM		 1258 [IFLA_ADDRESS] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN },
1259 [IFLA_BROADCAST] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN },
5176f91e 1260 [IFLA_MAP] = { .len = sizeof(struct rtnl_link_ifmap) },
da5e0494 1261 [IFLA_MTU] = { .type = NLA_U32 },
76e87306 1262 [IFLA_LINK] = { .type = NLA_U32 },
fbaec0ea 1263 [IFLA_MASTER] = { .type = NLA_U32 },
9a57247f 1264 [IFLA_CARRIER] = { .type = NLA_U8 },
da5e0494
TG		 1265 [IFLA_TXQLEN] = { .type = NLA_U32 },
1266 [IFLA_WEIGHT] = { .type = NLA_U32 },
1267 [IFLA_OPERSTATE] = { .type = NLA_U8 },
1268 [IFLA_LINKMODE] = { .type = NLA_U8 },
76e87306 1269 [IFLA_LINKINFO] = { .type = NLA_NESTED },
d8a5ec67 1270 [IFLA_NET_NS_PID] = { .type = NLA_U32 },
f0630529 1271 [IFLA_NET_NS_FD] = { .type = NLA_U32 },
0b815a1a 1272 [IFLA_IFALIAS] = { .type = NLA_STRING, .len = IFALIASZ-1 },
c02db8c6 1273 [IFLA_VFINFO_LIST] = {. type = NLA_NESTED },
57b61080
SF		 1274 [IFLA_VF_PORTS] = { .type = NLA_NESTED },
1275 [IFLA_PORT_SELF] = { .type = NLA_NESTED },
f8ff182c 1276 [IFLA_AF_SPEC] = { .type = NLA_NESTED },
115c9b81 1277 [IFLA_EXT_MASK] = { .type = NLA_U32 },
edbc0bb3 1278 [IFLA_PROMISCUITY] = { .type = NLA_U32 },
76ff5cc9
JP		 1279 [IFLA_NUM_TX_QUEUES] = { .type = NLA_U32 },
1280 [IFLA_NUM_RX_QUEUES] = { .type = NLA_U32 },
02637fce 1281 [IFLA_PHYS_PORT_ID] = { .type = NLA_BINARY, .len = MAX_PHYS_ITEM_ID_LEN },
2d3b479d 1282 [IFLA_CARRIER_CHANGES] = { .type = NLA_U32 }, /* ignored */
82f28412 1283 [IFLA_PHYS_SWITCH_ID] = { .type = NLA_BINARY, .len = MAX_PHYS_ITEM_ID_LEN },
317f4810 1284 [IFLA_LINK_NETNSID] = { .type = NLA_S32 },
da5e0494
TG		 1285};
1286
38f7b870
PM		 1287static const struct nla_policy ifla_info_policy[IFLA_INFO_MAX+1] = {
1288 [IFLA_INFO_KIND] = { .type = NLA_STRING },
1289 [IFLA_INFO_DATA] = { .type = NLA_NESTED },
ba7d49b1
JP		 1290 [IFLA_INFO_SLAVE_KIND] = { .type = NLA_STRING },
1291 [IFLA_INFO_SLAVE_DATA] = { .type = NLA_NESTED },
38f7b870
PM		 1292};
1293
c02db8c6
CW		 1294static const struct nla_policy ifla_vfinfo_policy[IFLA_VF_INFO_MAX+1] = {
1295 [IFLA_VF_INFO] = { .type = NLA_NESTED },
1296};
1297
1298static const struct nla_policy ifla_vf_policy[IFLA_VF_MAX+1] = {
364d5716
DB		 1299 [IFLA_VF_MAC] = { .len = sizeof(struct ifla_vf_mac) },
1300 [IFLA_VF_VLAN] = { .len = sizeof(struct ifla_vf_vlan) },
1301 [IFLA_VF_TX_RATE] = { .len = sizeof(struct ifla_vf_tx_rate) },
1302 [IFLA_VF_SPOOFCHK] = { .len = sizeof(struct ifla_vf_spoofchk) },
1303 [IFLA_VF_RATE] = { .len = sizeof(struct ifla_vf_rate) },
1304 [IFLA_VF_LINK_STATE] = { .len = sizeof(struct ifla_vf_link_state) },
01a3d796 1305 [IFLA_VF_RSS_QUERY_EN] = { .len = sizeof(struct ifla_vf_rss_query_en) },
c02db8c6
CW		 1306};
1307
57b61080
SF		 1308static const struct nla_policy ifla_port_policy[IFLA_PORT_MAX+1] = {
1309 [IFLA_PORT_VF] = { .type = NLA_U32 },
1310 [IFLA_PORT_PROFILE] = { .type = NLA_STRING,
1311 .len = PORT_PROFILE_MAX },
1312 [IFLA_PORT_VSI_TYPE] = { .type = NLA_BINARY,
1313 .len = sizeof(struct ifla_port_vsi)},
1314 [IFLA_PORT_INSTANCE_UUID] = { .type = NLA_BINARY,
1315 .len = PORT_UUID_MAX },
1316 [IFLA_PORT_HOST_UUID] = { .type = NLA_STRING,
1317 .len = PORT_UUID_MAX },
1318 [IFLA_PORT_REQUEST] = { .type = NLA_U8, },
1319 [IFLA_PORT_RESPONSE] = { .type = NLA_U16, },
1320};
1321
f7b12606
JP		 1322static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb)
1323{
1324 struct net *net = sock_net(skb->sk);
1325 int h, s_h;
1326 int idx = 0, s_idx;
1327 struct net_device *dev;
1328 struct hlist_head *head;
1329 struct nlattr *tb[IFLA_MAX+1];
1330 u32 ext_filter_mask = 0;
973462bb 1331 int err;
e5eca6d4 1332 int hdrlen;
f7b12606
JP		 1333
1334 s_h = cb->args[0];
1335 s_idx = cb->args[1];
1336
f7b12606
JP		 1337 cb->seq = net->dev_base_seq;
1338
e5eca6d4
MS		 1339 /* A hack to preserve kernel<->userspace interface.
1340 * The correct header is ifinfomsg. It is consistent with rtnl_getlink.
1341 * However, before Linux v3.9 the code here assumed rtgenmsg and that's
1342 * what iproute2 < v3.9.0 used.
1343 * We can detect the old iproute2. Even including the IFLA_EXT_MASK
1344 * attribute, its netlink message is shorter than struct ifinfomsg.
1345 */
1346 hdrlen = nlmsg_len(cb->nlh) < sizeof(struct ifinfomsg) ?
1347 sizeof(struct rtgenmsg) : sizeof(struct ifinfomsg);
1348
1349 if (nlmsg_parse(cb->nlh, hdrlen, tb, IFLA_MAX, ifla_policy) >= 0) {
f7b12606
JP		 1350
1351 if (tb[IFLA_EXT_MASK])
1352 ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]);
1353 }
1354
1355 for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) {
1356 idx = 0;
1357 head = &net->dev_index_head[h];
cac5e65e 1358 hlist_for_each_entry(dev, head, index_hlist) {
f7b12606
JP		 1359 if (idx < s_idx)
1360 goto cont;
973462bb
DG		 1361 err = rtnl_fill_ifinfo(skb, dev, RTM_NEWLINK,
1362 NETLINK_CB(cb->skb).portid,
1363 cb->nlh->nlmsg_seq, 0,
1364 NLM_F_MULTI,
1365 ext_filter_mask);
1366 /* If we ran out of room on the first message,
1367 * we're in trouble
1368 */
1369 WARN_ON((err == -EMSGSIZE) && (skb->len == 0));
1370
7b46a644 1371 if (err < 0)
f7b12606
JP		 1372 goto out;
1373
1374 nl_dump_check_consistent(cb, nlmsg_hdr(skb));
1375cont:
1376 idx++;
1377 }
1378 }
1379out:
f7b12606
JP		 1380 cb->args[1] = idx;
1381 cb->args[0] = h;
1382
1383 return skb->len;
1384}
1385
1386int rtnl_nla_parse_ifla(struct nlattr **tb, const struct nlattr *head, int len)
1387{
1388 return nla_parse(tb, IFLA_MAX, head, len, ifla_policy);
1389}
1390EXPORT_SYMBOL(rtnl_nla_parse_ifla);
1391
81adee47
EB		 1392struct net *rtnl_link_get_net(struct net *src_net, struct nlattr *tb[])
1393{
1394 struct net *net;
1395 /* Examine the link attributes and figure out which
1396 * network namespace we are talking about.
1397 */
1398 if (tb[IFLA_NET_NS_PID])
1399 net = get_net_ns_by_pid(nla_get_u32(tb[IFLA_NET_NS_PID]));
f0630529
EB		 1400 else if (tb[IFLA_NET_NS_FD])
1401 net = get_net_ns_by_fd(nla_get_u32(tb[IFLA_NET_NS_FD]));
81adee47
EB		 1402 else
1403 net = get_net(src_net);
1404 return net;
1405}
1406EXPORT_SYMBOL(rtnl_link_get_net);
1407
1840bb13
TG		 1408static int validate_linkmsg(struct net_device *dev, struct nlattr *tb[])
1409{
1410 if (dev) {
1411 if (tb[IFLA_ADDRESS] &&
1412 nla_len(tb[IFLA_ADDRESS]) < dev->addr_len)
1413 return -EINVAL;
1414
1415 if (tb[IFLA_BROADCAST] &&
1416 nla_len(tb[IFLA_BROADCAST]) < dev->addr_len)
1417 return -EINVAL;
1418 }
1419
cf7afbfe
TG		 1420 if (tb[IFLA_AF_SPEC]) {
1421 struct nlattr *af;
1422 int rem, err;
1423
1424 nla_for_each_nested(af, tb[IFLA_AF_SPEC], rem) {
1425 const struct rtnl_af_ops *af_ops;
1426
1427 if (!(af_ops = rtnl_af_lookup(nla_type(af))))
1428 return -EAFNOSUPPORT;
1429
1430 if (!af_ops->set_link_af)
1431 return -EOPNOTSUPP;
1432
1433 if (af_ops->validate_link_af) {
6d3a9a68 1434 err = af_ops->validate_link_af(dev, af);
cf7afbfe
TG		 1435 if (err < 0)
1436 return err;
1437 }
1438 }
1439 }
1440
1840bb13
TG		 1441 return 0;
1442}
1443
c02db8c6
CW		 1444static int do_setvfinfo(struct net_device *dev, struct nlattr *attr)
1445{
1446 int rem, err = -EINVAL;
1447 struct nlattr *vf;
1448 const struct net_device_ops *ops = dev->netdev_ops;
1449
1450 nla_for_each_nested(vf, attr, rem) {
1451 switch (nla_type(vf)) {
1452 case IFLA_VF_MAC: {
1453 struct ifla_vf_mac *ivm;
1454 ivm = nla_data(vf);
1455 err = -EOPNOTSUPP;
1456 if (ops->ndo_set_vf_mac)
1457 err = ops->ndo_set_vf_mac(dev, ivm->vf,
1458 ivm->mac);
1459 break;
1460 }
1461 case IFLA_VF_VLAN: {
1462 struct ifla_vf_vlan *ivv;
1463 ivv = nla_data(vf);
1464 err = -EOPNOTSUPP;
1465 if (ops->ndo_set_vf_vlan)
1466 err = ops->ndo_set_vf_vlan(dev, ivv->vf,
1467 ivv->vlan,
1468 ivv->qos);
1469 break;
1470 }
1471 case IFLA_VF_TX_RATE: {
1472 struct ifla_vf_tx_rate *ivt;
ed616689 1473 struct ifla_vf_info ivf;
c02db8c6
CW		 1474 ivt = nla_data(vf);
1475 err = -EOPNOTSUPP;
ed616689
SC		 1476 if (ops->ndo_get_vf_config)
1477 err = ops->ndo_get_vf_config(dev, ivt->vf,
1478 &ivf);
1479 if (err)
1480 break;
1481 err = -EOPNOTSUPP;
1482 if (ops->ndo_set_vf_rate)
1483 err = ops->ndo_set_vf_rate(dev, ivt->vf,
1484 ivf.min_tx_rate,
1485 ivt->rate);
1486 break;
1487 }
1488 case IFLA_VF_RATE: {
1489 struct ifla_vf_rate *ivt;
1490 ivt = nla_data(vf);
1491 err = -EOPNOTSUPP;
1492 if (ops->ndo_set_vf_rate)
1493 err = ops->ndo_set_vf_rate(dev, ivt->vf,
1494 ivt->min_tx_rate,
1495 ivt->max_tx_rate);
c02db8c6
CW		 1496 break;
1497 }
5f8444a3
GR		 1498 case IFLA_VF_SPOOFCHK: {
1499 struct ifla_vf_spoofchk *ivs;
1500 ivs = nla_data(vf);
1501 err = -EOPNOTSUPP;
1502 if (ops->ndo_set_vf_spoofchk)
1503 err = ops->ndo_set_vf_spoofchk(dev, ivs->vf,
1504 ivs->setting);
1505 break;
1506 }
1d8faf48
RE		 1507 case IFLA_VF_LINK_STATE: {
1508 struct ifla_vf_link_state *ivl;
1509 ivl = nla_data(vf);
1510 err = -EOPNOTSUPP;
1511 if (ops->ndo_set_vf_link_state)
1512 err = ops->ndo_set_vf_link_state(dev, ivl->vf,
1513 ivl->link_state);
1514 break;
1515 }
01a3d796
VZ		 1516 case IFLA_VF_RSS_QUERY_EN: {
1517 struct ifla_vf_rss_query_en *ivrssq_en;
1518
1519 ivrssq_en = nla_data(vf);
1520 err = -EOPNOTSUPP;
1521 if (ops->ndo_set_vf_rss_query_en)
1522 err = ops->ndo_set_vf_rss_query_en(dev,
1523 ivrssq_en->vf,
1524 ivrssq_en->setting);
1525 break;
1526 }
c02db8c6
CW		 1527 default:
1528 err = -EINVAL;
1529 break;
1530 }
1531 if (err)
1532 break;
1533 }
1534 return err;
1535}
1536
fbaec0ea
JP		 1537static int do_set_master(struct net_device *dev, int ifindex)
1538{
898e5061 1539 struct net_device *upper_dev = netdev_master_upper_dev_get(dev);
fbaec0ea
JP		 1540 const struct net_device_ops *ops;
1541 int err;
1542
898e5061
JP		 1543 if (upper_dev) {
1544 if (upper_dev->ifindex == ifindex)
fbaec0ea 1545 return 0;
898e5061 1546 ops = upper_dev->netdev_ops;
fbaec0ea 1547 if (ops->ndo_del_slave) {
898e5061 1548 err = ops->ndo_del_slave(upper_dev, dev);
fbaec0ea
JP		 1549 if (err)
1550 return err;
1551 } else {
1552 return -EOPNOTSUPP;
1553 }
1554 }
1555
1556 if (ifindex) {
898e5061
JP		 1557 upper_dev = __dev_get_by_index(dev_net(dev), ifindex);
1558 if (!upper_dev)
fbaec0ea 1559 return -EINVAL;
898e5061 1560 ops = upper_dev->netdev_ops;
fbaec0ea 1561 if (ops->ndo_add_slave) {
898e5061 1562 err = ops->ndo_add_slave(upper_dev, dev);
fbaec0ea
JP		 1563 if (err)
1564 return err;
1565 } else {
1566 return -EOPNOTSUPP;
1567 }
1568 }
1569 return 0;
1570}
1571
90c325e3 1572#define DO_SETLINK_MODIFIED 0x01
ba998906
ND		 1573/* notify flag means notify + modified. */
1574#define DO_SETLINK_NOTIFY 0x03
90f62cf3
EB		 1575static int do_setlink(const struct sk_buff *skb,
1576 struct net_device *dev, struct ifinfomsg *ifm,
90c325e3 1577 struct nlattr **tb, char *ifname, int status)
1da177e4 1578{
d314774c 1579 const struct net_device_ops *ops = dev->netdev_ops;
0157f60c 1580 int err;
1da177e4 1581
f0630529 1582 if (tb[IFLA_NET_NS_PID] || tb[IFLA_NET_NS_FD]) {
81adee47 1583 struct net *net = rtnl_link_get_net(dev_net(dev), tb);
d8a5ec67
EB		 1584 if (IS_ERR(net)) {
1585 err = PTR_ERR(net);
1586 goto errout;
1587 }
90f62cf3 1588 if (!netlink_ns_capable(skb, net->user_ns, CAP_NET_ADMIN)) {
e0ebde0e 1589 put_net(net);
b51642f6
EB		 1590 err = -EPERM;
1591 goto errout;
1592 }
d8a5ec67
EB		 1593 err = dev_change_net_namespace(dev, net, ifname);
1594 put_net(net);
1595 if (err)
1596 goto errout;
90c325e3 1597 status |= DO_SETLINK_MODIFIED;
d8a5ec67
EB		 1598 }
1599
da5e0494 1600 if (tb[IFLA_MAP]) {
1da177e4
LT		 1601 struct rtnl_link_ifmap *u_map;
1602 struct ifmap k_map;
1603
d314774c 1604 if (!ops->ndo_set_config) {
1da177e4 1605 err = -EOPNOTSUPP;
0157f60c 1606 goto errout;
1da177e4
LT		 1607 }
1608
1609 if (!netif_device_present(dev)) {
1610 err = -ENODEV;
0157f60c 1611 goto errout;
1da177e4 1612 }
1da177e4 1613
da5e0494 1614 u_map = nla_data(tb[IFLA_MAP]);
1da177e4
LT		 1615 k_map.mem_start = (unsigned long) u_map->mem_start;
1616 k_map.mem_end = (unsigned long) u_map->mem_end;
1617 k_map.base_addr = (unsigned short) u_map->base_addr;
1618 k_map.irq = (unsigned char) u_map->irq;
1619 k_map.dma = (unsigned char) u_map->dma;
1620 k_map.port = (unsigned char) u_map->port;
1621
d314774c 1622 err = ops->ndo_set_config(dev, &k_map);
da5e0494 1623 if (err < 0)
0157f60c 1624 goto errout;
1da177e4 1625
ba998906 1626 status |= DO_SETLINK_NOTIFY;
1da177e4
LT		 1627 }
1628
da5e0494 1629 if (tb[IFLA_ADDRESS]) {
70f8e78e
DM		 1630 struct sockaddr *sa;
1631 int len;
1632
70f8e78e
DM		 1633 len = sizeof(sa_family_t) + dev->addr_len;
1634 sa = kmalloc(len, GFP_KERNEL);
1635 if (!sa) {
1636 err = -ENOMEM;
0157f60c 1637 goto errout;
70f8e78e
DM		 1638 }
1639 sa->sa_family = dev->type;
da5e0494 1640 memcpy(sa->sa_data, nla_data(tb[IFLA_ADDRESS]),
70f8e78e 1641 dev->addr_len);
e7c3273e 1642 err = dev_set_mac_address(dev, sa);
70f8e78e 1643 kfree(sa);
1da177e4 1644 if (err)
0157f60c 1645 goto errout;
90c325e3 1646 status |= DO_SETLINK_MODIFIED;
1da177e4
LT		 1647 }
1648
da5e0494
TG		 1649 if (tb[IFLA_MTU]) {
1650 err = dev_set_mtu(dev, nla_get_u32(tb[IFLA_MTU]));
1651 if (err < 0)
0157f60c 1652 goto errout;
90c325e3 1653 status |= DO_SETLINK_MODIFIED;
1da177e4
LT		 1654 }
1655
cbda10fa
VD		 1656 if (tb[IFLA_GROUP]) {
1657 dev_set_group(dev, nla_get_u32(tb[IFLA_GROUP]));
ba998906 1658 status |= DO_SETLINK_NOTIFY;
cbda10fa
VD		 1659 }
1660
da5e0494
TG		 1661 /*
1662 * Interface selected by interface index but interface
1663 * name provided implies that a name change has been
1664 * requested.
1665 */
51055be8 1666 if (ifm->ifi_index > 0 && ifname[0]) {
da5e0494
TG		 1667 err = dev_change_name(dev, ifname);
1668 if (err < 0)
0157f60c 1669 goto errout;
90c325e3 1670 status |= DO_SETLINK_MODIFIED;
1da177e4
LT		 1671 }
1672
0b815a1a
SH		 1673 if (tb[IFLA_IFALIAS]) {
1674 err = dev_set_alias(dev, nla_data(tb[IFLA_IFALIAS]),
1675 nla_len(tb[IFLA_IFALIAS]));
1676 if (err < 0)
1677 goto errout;
ba998906 1678 status |= DO_SETLINK_NOTIFY;
0b815a1a
SH		 1679 }
1680
da5e0494
TG		 1681 if (tb[IFLA_BROADCAST]) {
1682 nla_memcpy(dev->broadcast, tb[IFLA_BROADCAST], dev->addr_len);
e7c3273e 1683 call_netdevice_notifiers(NETDEV_CHANGEADDR, dev);
1da177e4
LT		 1684 }
1685
83b496e9 1686 if (ifm->ifi_flags || ifm->ifi_change) {
3729d502 1687 err = dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm));
5f9021cf
JB		 1688 if (err < 0)
1689 goto errout;
83b496e9 1690 }
1da177e4 1691
fbaec0ea
JP		 1692 if (tb[IFLA_MASTER]) {
1693 err = do_set_master(dev, nla_get_u32(tb[IFLA_MASTER]));
1694 if (err)
1695 goto errout;
90c325e3 1696 status |= DO_SETLINK_MODIFIED;
fbaec0ea
JP		 1697 }
1698
9a57247f
JP		 1699 if (tb[IFLA_CARRIER]) {
1700 err = dev_change_carrier(dev, nla_get_u8(tb[IFLA_CARRIER]));
1701 if (err)
1702 goto errout;
90c325e3 1703 status |= DO_SETLINK_MODIFIED;
9a57247f
JP		 1704 }
1705
5d1180fc
ND		 1706 if (tb[IFLA_TXQLEN]) {
1707 unsigned long value = nla_get_u32(tb[IFLA_TXQLEN]);
1708
1709 if (dev->tx_queue_len ^ value)
ba998906 1710 status |= DO_SETLINK_NOTIFY;
5d1180fc
ND		 1711
1712 dev->tx_queue_len = value;
1713 }
b00055aa 1714
da5e0494 1715 if (tb[IFLA_OPERSTATE])
93b2d4a2 1716 set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE]));
b00055aa 1717
da5e0494 1718 if (tb[IFLA_LINKMODE]) {
1889b0e7
ND		 1719 unsigned char value = nla_get_u8(tb[IFLA_LINKMODE]);
1720
93b2d4a2 1721 write_lock_bh(&dev_base_lock);
1889b0e7 1722 if (dev->link_mode ^ value)
ba998906 1723 status |= DO_SETLINK_NOTIFY;
1889b0e7 1724 dev->link_mode = value;
93b2d4a2 1725 write_unlock_bh(&dev_base_lock);
b00055aa
SR		 1726 }
1727
c02db8c6
CW		 1728 if (tb[IFLA_VFINFO_LIST]) {
1729 struct nlattr *attr;
1730 int rem;
1731 nla_for_each_nested(attr, tb[IFLA_VFINFO_LIST], rem) {
253683bb
DH		 1732 if (nla_type(attr) != IFLA_VF_INFO) {
1733 err = -EINVAL;
c02db8c6 1734 goto errout;
253683bb 1735 }
c02db8c6
CW		 1736 err = do_setvfinfo(dev, attr);
1737 if (err < 0)
1738 goto errout;
ba998906 1739 status |= DO_SETLINK_NOTIFY;
c02db8c6 1740 }
ebc08a6f 1741 }
1da177e4
LT		 1742 err = 0;
1743
57b61080
SF		 1744 if (tb[IFLA_VF_PORTS]) {
1745 struct nlattr *port[IFLA_PORT_MAX+1];
1746 struct nlattr *attr;
1747 int vf;
1748 int rem;
1749
1750 err = -EOPNOTSUPP;
1751 if (!ops->ndo_set_vf_port)
1752 goto errout;
1753
1754 nla_for_each_nested(attr, tb[IFLA_VF_PORTS], rem) {
1755 if (nla_type(attr) != IFLA_VF_PORT)
1756 continue;
1757 err = nla_parse_nested(port, IFLA_PORT_MAX,
1758 attr, ifla_port_policy);
1759 if (err < 0)
1760 goto errout;
1761 if (!port[IFLA_PORT_VF]) {
1762 err = -EOPNOTSUPP;
1763 goto errout;
1764 }
1765 vf = nla_get_u32(port[IFLA_PORT_VF]);
1766 err = ops->ndo_set_vf_port(dev, vf, port);
1767 if (err < 0)
1768 goto errout;
ba998906 1769 status |= DO_SETLINK_NOTIFY;
57b61080
SF		 1770 }
1771 }
1772 err = 0;
1773
1774 if (tb[IFLA_PORT_SELF]) {
1775 struct nlattr *port[IFLA_PORT_MAX+1];
1776
1777 err = nla_parse_nested(port, IFLA_PORT_MAX,
1778 tb[IFLA_PORT_SELF], ifla_port_policy);
1779 if (err < 0)
1780 goto errout;
1781
1782 err = -EOPNOTSUPP;
1783 if (ops->ndo_set_vf_port)
1784 err = ops->ndo_set_vf_port(dev, PORT_SELF_VF, port);
1785 if (err < 0)
1786 goto errout;
ba998906 1787 status |= DO_SETLINK_NOTIFY;
57b61080 1788 }
f8ff182c
TG		 1789
1790 if (tb[IFLA_AF_SPEC]) {
1791 struct nlattr *af;
1792 int rem;
1793
1794 nla_for_each_nested(af, tb[IFLA_AF_SPEC], rem) {
1795 const struct rtnl_af_ops *af_ops;
1796
1797 if (!(af_ops = rtnl_af_lookup(nla_type(af))))
cf7afbfe 1798 BUG();
f8ff182c 1799
cf7afbfe 1800 err = af_ops->set_link_af(dev, af);
f8ff182c
TG		 1801 if (err < 0)
1802 goto errout;
1803
ba998906 1804 status |= DO_SETLINK_NOTIFY;
f8ff182c
TG		 1805 }
1806 }
57b61080
SF		 1807 err = 0;
1808
0157f60c 1809errout:
ba998906
ND		 1810 if (status & DO_SETLINK_MODIFIED) {
1811 if (status & DO_SETLINK_NOTIFY)
1812 netdev_state_change(dev);
1813
1814 if (err < 0)
1815 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",
1816 dev->name);
1817 }
da5e0494 1818
0157f60c
PM		 1819 return err;
1820}
1da177e4 1821
661d2967 1822static int rtnl_setlink(struct sk_buff *skb, struct nlmsghdr *nlh)
0157f60c 1823{
3b1e0a65 1824 struct net *net = sock_net(skb->sk);
0157f60c
PM		 1825 struct ifinfomsg *ifm;
1826 struct net_device *dev;
1827 int err;
1828 struct nlattr *tb[IFLA_MAX+1];
1829 char ifname[IFNAMSIZ];
1830
1831 err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy);
1832 if (err < 0)
1833 goto errout;
1834
1835 if (tb[IFLA_IFNAME])
1836 nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ);
1837 else
1838 ifname[0] = '\0';
1839
1840 err = -EINVAL;
1841 ifm = nlmsg_data(nlh);
1842 if (ifm->ifi_index > 0)
a3d12891 1843 dev = __dev_get_by_index(net, ifm->ifi_index);
0157f60c 1844 else if (tb[IFLA_IFNAME])
a3d12891 1845 dev = __dev_get_by_name(net, ifname);
0157f60c
PM		 1846 else
1847 goto errout;
1848
1849 if (dev == NULL) {
1850 err = -ENODEV;
1851 goto errout;
1852 }
1853
e0d087af
ED		 1854 err = validate_linkmsg(dev, tb);
1855 if (err < 0)
a3d12891 1856 goto errout;
0157f60c 1857
90f62cf3 1858 err = do_setlink(skb, dev, ifm, tb, ifname, 0);
da5e0494 1859errout:
1da177e4
LT		 1860 return err;
1861}
1862
66400d54
WC		 1863static int rtnl_group_dellink(const struct net *net, int group)
1864{
1865 struct net_device *dev, *aux;
1866 LIST_HEAD(list_kill);
1867 bool found = false;
1868
1869 if (!group)
1870 return -EPERM;
1871
1872 for_each_netdev(net, dev) {
1873 if (dev->group == group) {
1874 const struct rtnl_link_ops *ops;
1875
1876 found = true;
1877 ops = dev->rtnl_link_ops;
1878 if (!ops || !ops->dellink)
1879 return -EOPNOTSUPP;
1880 }
1881 }
1882
1883 if (!found)
1884 return -ENODEV;
1885
1886 for_each_netdev_safe(net, dev, aux) {
1887 if (dev->group == group) {
1888 const struct rtnl_link_ops *ops;
1889
1890 ops = dev->rtnl_link_ops;
1891 ops->dellink(dev, &list_kill);
1892 }
1893 }
1894 unregister_netdevice_many(&list_kill);
1895
1896 return 0;
1897}
1898
661d2967 1899static int rtnl_dellink(struct sk_buff *skb, struct nlmsghdr *nlh)
38f7b870 1900{
3b1e0a65 1901 struct net *net = sock_net(skb->sk);
38f7b870
PM		 1902 const struct rtnl_link_ops *ops;
1903 struct net_device *dev;
1904 struct ifinfomsg *ifm;
1905 char ifname[IFNAMSIZ];
1906 struct nlattr *tb[IFLA_MAX+1];
1907 int err;
226bd341 1908 LIST_HEAD(list_kill);
38f7b870
PM		 1909
1910 err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy);
1911 if (err < 0)
1912 return err;
1913
1914 if (tb[IFLA_IFNAME])
1915 nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ);
1916
1917 ifm = nlmsg_data(nlh);
1918 if (ifm->ifi_index > 0)
881d966b 1919 dev = __dev_get_by_index(net, ifm->ifi_index);
38f7b870 1920 else if (tb[IFLA_IFNAME])
881d966b 1921 dev = __dev_get_by_name(net, ifname);
66400d54
WC		 1922 else if (tb[IFLA_GROUP])
1923 return rtnl_group_dellink(net, nla_get_u32(tb[IFLA_GROUP]));
38f7b870
PM		 1924 else
1925 return -EINVAL;
1926
1927 if (!dev)
1928 return -ENODEV;
1929
1930 ops = dev->rtnl_link_ops;
b0ab2fab 1931 if (!ops || !ops->dellink)
38f7b870
PM		 1932 return -EOPNOTSUPP;
1933
226bd341
ED		 1934 ops->dellink(dev, &list_kill);
1935 unregister_netdevice_many(&list_kill);
38f7b870
PM		 1936 return 0;
1937}
1938
3729d502
PM		 1939int rtnl_configure_link(struct net_device *dev, const struct ifinfomsg *ifm)
1940{
1941 unsigned int old_flags;
1942 int err;
1943
1944 old_flags = dev->flags;
1945 if (ifm && (ifm->ifi_flags || ifm->ifi_change)) {
1946 err = __dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm));
1947 if (err < 0)
1948 return err;
1949 }
1950
1951 dev->rtnl_link_state = RTNL_LINK_INITIALIZED;
3729d502 1952
a528c219 1953 __dev_notify_flags(dev, old_flags, ~0U);
3729d502
PM		 1954 return 0;
1955}
1956EXPORT_SYMBOL(rtnl_configure_link);
1957
c0713563 1958struct net_device *rtnl_create_link(struct net *net,
78ebb0d0 1959 const char *ifname, unsigned char name_assign_type,
5517750f 1960 const struct rtnl_link_ops *ops, struct nlattr *tb[])
e7199288
PE		 1961{
1962 int err;
1963 struct net_device *dev;
d40156aa
JP		 1964 unsigned int num_tx_queues = 1;
1965 unsigned int num_rx_queues = 1;
e7199288 1966
76ff5cc9
JP		 1967 if (tb[IFLA_NUM_TX_QUEUES])
1968 num_tx_queues = nla_get_u32(tb[IFLA_NUM_TX_QUEUES]);
1969 else if (ops->get_num_tx_queues)
d40156aa 1970 num_tx_queues = ops->get_num_tx_queues();
76ff5cc9
JP		 1971
1972 if (tb[IFLA_NUM_RX_QUEUES])
1973 num_rx_queues = nla_get_u32(tb[IFLA_NUM_RX_QUEUES]);
1974 else if (ops->get_num_rx_queues)
d40156aa 1975 num_rx_queues = ops->get_num_rx_queues();
efacb309 1976
e7199288 1977 err = -ENOMEM;
5517750f 1978 dev = alloc_netdev_mqs(ops->priv_size, ifname, name_assign_type,
c835a677 1979 ops->setup, num_tx_queues, num_rx_queues);
e7199288
PE		 1980 if (!dev)
1981 goto err;
1982
81adee47
EB		 1983 dev_net_set(dev, net);
1984 dev->rtnl_link_ops = ops;
3729d502 1985 dev->rtnl_link_state = RTNL_LINK_INITIALIZING;
81adee47 1986
e7199288
PE		 1987 if (tb[IFLA_MTU])
1988 dev->mtu = nla_get_u32(tb[IFLA_MTU]);
2afb9b53 1989 if (tb[IFLA_ADDRESS]) {
e7199288
PE		 1990 memcpy(dev->dev_addr, nla_data(tb[IFLA_ADDRESS]),
1991 nla_len(tb[IFLA_ADDRESS]));
2afb9b53
JP		 1992 dev->addr_assign_type = NET_ADDR_SET;
1993 }
e7199288
PE		 1994 if (tb[IFLA_BROADCAST])
1995 memcpy(dev->broadcast, nla_data(tb[IFLA_BROADCAST]),
1996 nla_len(tb[IFLA_BROADCAST]));
1997 if (tb[IFLA_TXQLEN])
1998 dev->tx_queue_len = nla_get_u32(tb[IFLA_TXQLEN]);
1999 if (tb[IFLA_OPERSTATE])
93b2d4a2 2000 set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE]));
e7199288
PE		 2001 if (tb[IFLA_LINKMODE])
2002 dev->link_mode = nla_get_u8(tb[IFLA_LINKMODE]);
ffa934f1
PM		 2003 if (tb[IFLA_GROUP])
2004 dev_set_group(dev, nla_get_u32(tb[IFLA_GROUP]));
e7199288
PE		 2005
2006 return dev;
2007
e7199288
PE		 2008err:
2009 return ERR_PTR(err);
2010}
e0d087af 2011EXPORT_SYMBOL(rtnl_create_link);
e7199288 2012
90f62cf3
EB		 2013static int rtnl_group_changelink(const struct sk_buff *skb,
2014 struct net *net, int group,
e7ed828f
VD		 2015 struct ifinfomsg *ifm,
2016 struct nlattr **tb)
2017{
d079535d 2018 struct net_device *dev, *aux;
e7ed828f
VD		 2019 int err;
2020
d079535d 2021 for_each_netdev_safe(net, dev, aux) {
e7ed828f 2022 if (dev->group == group) {
90f62cf3 2023 err = do_setlink(skb, dev, ifm, tb, NULL, 0);
e7ed828f
VD		 2024 if (err < 0)
2025 return err;
2026 }
2027 }
2028
2029 return 0;
2030}
2031
661d2967 2032static int rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh)
38f7b870 2033{
3b1e0a65 2034 struct net *net = sock_net(skb->sk);
38f7b870 2035 const struct rtnl_link_ops *ops;
ba7d49b1 2036 const struct rtnl_link_ops *m_ops = NULL;
38f7b870 2037 struct net_device *dev;
ba7d49b1 2038 struct net_device *master_dev = NULL;
38f7b870
PM		 2039 struct ifinfomsg *ifm;
2040 char kind[MODULE_NAME_LEN];
2041 char ifname[IFNAMSIZ];
2042 struct nlattr *tb[IFLA_MAX+1];
2043 struct nlattr *linkinfo[IFLA_INFO_MAX+1];
5517750f 2044 unsigned char name_assign_type = NET_NAME_USER;
38f7b870
PM		 2045 int err;
2046
95a5afca 2047#ifdef CONFIG_MODULES
38f7b870 2048replay:
8072f085 2049#endif
38f7b870
PM		 2050 err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy);
2051 if (err < 0)
2052 return err;
2053
2054 if (tb[IFLA_IFNAME])
2055 nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ);
2056 else
2057 ifname[0] = '\0';
2058
2059 ifm = nlmsg_data(nlh);
2060 if (ifm->ifi_index > 0)
881d966b 2061 dev = __dev_get_by_index(net, ifm->ifi_index);
e7ed828f
VD		 2062 else {
2063 if (ifname[0])
2064 dev = __dev_get_by_name(net, ifname);
e7ed828f
VD		 2065 else
2066 dev = NULL;
2067 }
38f7b870 2068
ba7d49b1
JP		 2069 if (dev) {
2070 master_dev = netdev_master_upper_dev_get(dev);
2071 if (master_dev)
2072 m_ops = master_dev->rtnl_link_ops;
2073 }
2074
e0d087af
ED		 2075 err = validate_linkmsg(dev, tb);
2076 if (err < 0)
1840bb13
TG		 2077 return err;
2078
38f7b870
PM		 2079 if (tb[IFLA_LINKINFO]) {
2080 err = nla_parse_nested(linkinfo, IFLA_INFO_MAX,
2081 tb[IFLA_LINKINFO], ifla_info_policy);
2082 if (err < 0)
2083 return err;
2084 } else
2085 memset(linkinfo, 0, sizeof(linkinfo));
2086
2087 if (linkinfo[IFLA_INFO_KIND]) {
2088 nla_strlcpy(kind, linkinfo[IFLA_INFO_KIND], sizeof(kind));
2089 ops = rtnl_link_ops_get(kind);
2090 } else {
2091 kind[0] = '\0';
2092 ops = NULL;
2093 }
2094
2095 if (1) {
4e10fd5b
SL		 2096 struct nlattr *attr[ops ? ops->maxtype + 1 : 1];
2097 struct nlattr *slave_attr[m_ops ? m_ops->slave_maxtype + 1 : 1];
ba7d49b1
JP		 2098 struct nlattr **data = NULL;
2099 struct nlattr **slave_data = NULL;
317f4810 2100 struct net *dest_net, *link_net = NULL;
38f7b870
PM		 2101
2102 if (ops) {
2103 if (ops->maxtype && linkinfo[IFLA_INFO_DATA]) {
2104 err = nla_parse_nested(attr, ops->maxtype,
2105 linkinfo[IFLA_INFO_DATA],
2106 ops->policy);
2107 if (err < 0)
2108 return err;
2109 data = attr;
2110 }
2111 if (ops->validate) {
2112 err = ops->validate(tb, data);
2113 if (err < 0)
2114 return err;
2115 }
2116 }
2117
ba7d49b1
JP		 2118 if (m_ops) {
2119 if (m_ops->slave_maxtype &&
2120 linkinfo[IFLA_INFO_SLAVE_DATA]) {
2121 err = nla_parse_nested(slave_attr,
2122 m_ops->slave_maxtype,
2123 linkinfo[IFLA_INFO_SLAVE_DATA],
2124 m_ops->slave_policy);
2125 if (err < 0)
2126 return err;
2127 slave_data = slave_attr;
2128 }
2129 if (m_ops->slave_validate) {
2130 err = m_ops->slave_validate(tb, slave_data);
2131 if (err < 0)
2132 return err;
2133 }
2134 }
2135
38f7b870 2136 if (dev) {
90c325e3 2137 int status = 0;
38f7b870
PM		 2138
2139 if (nlh->nlmsg_flags & NLM_F_EXCL)
2140 return -EEXIST;
2141 if (nlh->nlmsg_flags & NLM_F_REPLACE)
2142 return -EOPNOTSUPP;
2143
2144 if (linkinfo[IFLA_INFO_DATA]) {
2145 if (!ops || ops != dev->rtnl_link_ops ||
2146 !ops->changelink)
2147 return -EOPNOTSUPP;
2148
2149 err = ops->changelink(dev, tb, data);
2150 if (err < 0)
2151 return err;
ba998906 2152 status |= DO_SETLINK_NOTIFY;
38f7b870
PM		 2153 }
2154
ba7d49b1
JP		 2155 if (linkinfo[IFLA_INFO_SLAVE_DATA]) {
2156 if (!m_ops || !m_ops->slave_changelink)
2157 return -EOPNOTSUPP;
2158
2159 err = m_ops->slave_changelink(master_dev, dev,
2160 tb, slave_data);
2161 if (err < 0)
2162 return err;
ba998906 2163 status |= DO_SETLINK_NOTIFY;
ba7d49b1
JP		 2164 }
2165
90c325e3 2166 return do_setlink(skb, dev, ifm, tb, ifname, status);
38f7b870
PM		 2167 }
2168
ffa934f1
PM		 2169 if (!(nlh->nlmsg_flags & NLM_F_CREATE)) {
2170 if (ifm->ifi_index == 0 && tb[IFLA_GROUP])
90f62cf3 2171 return rtnl_group_changelink(skb, net,
ffa934f1
PM		 2172 nla_get_u32(tb[IFLA_GROUP]),
2173 ifm, tb);
38f7b870 2174 return -ENODEV;
ffa934f1 2175 }
38f7b870 2176
0e06877c 2177 if (tb[IFLA_MAP] || tb[IFLA_MASTER] || tb[IFLA_PROTINFO])
38f7b870
PM		 2178 return -EOPNOTSUPP;
2179
2180 if (!ops) {
95a5afca 2181#ifdef CONFIG_MODULES
38f7b870
PM		 2182 if (kind[0]) {
2183 __rtnl_unlock();
2184 request_module("rtnl-link-%s", kind);
2185 rtnl_lock();
2186 ops = rtnl_link_ops_get(kind);
2187 if (ops)
2188 goto replay;
2189 }
2190#endif
2191 return -EOPNOTSUPP;
2192 }
2193
b0ab2fab
JP		 2194 if (!ops->setup)
2195 return -EOPNOTSUPP;
2196
5517750f 2197 if (!ifname[0]) {
38f7b870 2198 snprintf(ifname, IFNAMSIZ, "%s%%d", ops->kind);
5517750f
TG		 2199 name_assign_type = NET_NAME_ENUM;
2200 }
e7199288 2201
81adee47 2202 dest_net = rtnl_link_get_net(net, tb);
13ad1774
EB		 2203 if (IS_ERR(dest_net))
2204 return PTR_ERR(dest_net);
2205
505ce415
EB		 2206 err = -EPERM;
2207 if (!netlink_ns_capable(skb, dest_net->user_ns, CAP_NET_ADMIN))
2208 goto out;
2209
317f4810
ND		 2210 if (tb[IFLA_LINK_NETNSID]) {
2211 int id = nla_get_s32(tb[IFLA_LINK_NETNSID]);
2212
2213 link_net = get_net_ns_by_id(dest_net, id);
2214 if (!link_net) {
2215 err = -EINVAL;
2216 goto out;
2217 }
06615bed
EB		 2218 err = -EPERM;
2219 if (!netlink_ns_capable(skb, link_net->user_ns, CAP_NET_ADMIN))
2220 goto out;
317f4810
ND		 2221 }
2222
2223 dev = rtnl_create_link(link_net ? : dest_net, ifname,
2224 name_assign_type, ops, tb);
9c7dafbf 2225 if (IS_ERR(dev)) {
e7199288 2226 err = PTR_ERR(dev);
9c7dafbf
PE		 2227 goto out;
2228 }
2229
2230 dev->ifindex = ifm->ifi_index;
2231
0e0eee24 2232 if (ops->newlink) {
7b4ce694 2233 err = ops->newlink(link_net ? : net, dev, tb, data);
0e0eee24 2234 /* Drivers should call free_netdev() in ->destructor
e51fb152
CW		 2235 * and unregister it on failure after registration
2236 * so that device could be finally freed in rtnl_unlock.
0e0eee24 2237 */
e51fb152
CW		 2238 if (err < 0) {
2239 /* If device is not registered at all, free it now */
2240 if (dev->reg_state == NETREG_UNINITIALIZED)
2241 free_netdev(dev);
0e0eee24 2242 goto out;
e51fb152 2243 }
0e0eee24 2244 } else {
2d85cba2 2245 err = register_netdevice(dev);
0e0eee24
CW		 2246 if (err < 0) {
2247 free_netdev(dev);
2248 goto out;
2249 }
fce9b9be 2250 }
3729d502 2251 err = rtnl_configure_link(dev, ifm);
43638900
DM		 2252 if (err < 0)
2253 goto out_unregister;
bdef279b 2254 if (link_net) {
317f4810 2255 err = dev_change_net_namespace(dev, dest_net, ifname);
bdef279b 2256 if (err < 0)
43638900 2257 goto out_unregister;
bdef279b 2258 }
3729d502 2259out:
317f4810
ND		 2260 if (link_net)
2261 put_net(link_net);
81adee47 2262 put_net(dest_net);
38f7b870 2263 return err;
43638900
DM		 2264out_unregister:
2265 if (ops->newlink) {
2266 LIST_HEAD(list_kill);
2267
2268 ops->dellink(dev, &list_kill);
2269 unregister_netdevice_many(&list_kill);
2270 } else {
2271 unregister_netdevice(dev);
2272 }
2273 goto out;
38f7b870
PM		 2274 }
2275}
2276
661d2967 2277static int rtnl_getlink(struct sk_buff *skb, struct nlmsghdr* nlh)
711e2c33 2278{
3b1e0a65 2279 struct net *net = sock_net(skb->sk);
b60c5115 2280 struct ifinfomsg *ifm;
a3d12891 2281 char ifname[IFNAMSIZ];
b60c5115
TG		 2282 struct nlattr *tb[IFLA_MAX+1];
2283 struct net_device *dev = NULL;
2284 struct sk_buff *nskb;
339bf98f 2285 int err;
115c9b81 2286 u32 ext_filter_mask = 0;
711e2c33 2287
b60c5115
TG		 2288 err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy);
2289 if (err < 0)
9918f230 2290 return err;
b60c5115 2291
a3d12891
ED		 2292 if (tb[IFLA_IFNAME])
2293 nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ);
2294
115c9b81
GR		 2295 if (tb[IFLA_EXT_MASK])
2296 ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]);
2297
b60c5115 2298 ifm = nlmsg_data(nlh);
a3d12891
ED		 2299 if (ifm->ifi_index > 0)
2300 dev = __dev_get_by_index(net, ifm->ifi_index);
2301 else if (tb[IFLA_IFNAME])
2302 dev = __dev_get_by_name(net, ifname);
2303 else
711e2c33 2304 return -EINVAL;
711e2c33 2305
a3d12891
ED		 2306 if (dev == NULL)
2307 return -ENODEV;
2308
115c9b81 2309 nskb = nlmsg_new(if_nlmsg_size(dev, ext_filter_mask), GFP_KERNEL);
a3d12891
ED		 2310 if (nskb == NULL)
2311 return -ENOBUFS;
b60c5115 2312
15e47304 2313 err = rtnl_fill_ifinfo(nskb, dev, RTM_NEWLINK, NETLINK_CB(skb).portid,
115c9b81 2314 nlh->nlmsg_seq, 0, 0, ext_filter_mask);
26932566
PM		 2315 if (err < 0) {
2316 /* -EMSGSIZE implies BUG in if_nlmsg_size */
2317 WARN_ON(err == -EMSGSIZE);
2318 kfree_skb(nskb);
a3d12891 2319 } else
15e47304 2320 err = rtnl_unicast(nskb, net, NETLINK_CB(skb).portid);
711e2c33 2321
b60c5115 2322 return err;
711e2c33 2323}
711e2c33 2324
115c9b81 2325static u16 rtnl_calcit(struct sk_buff *skb, struct nlmsghdr *nlh)
c7ac8679 2326{
115c9b81
GR		 2327 struct net *net = sock_net(skb->sk);
2328 struct net_device *dev;
2329 struct nlattr *tb[IFLA_MAX+1];
2330 u32 ext_filter_mask = 0;
2331 u16 min_ifinfo_dump_size = 0;
e5eca6d4
MS		 2332 int hdrlen;
2333
2334 /* Same kernel<->userspace interface hack as in rtnl_dump_ifinfo. */
2335 hdrlen = nlmsg_len(nlh) < sizeof(struct ifinfomsg) ?
2336 sizeof(struct rtgenmsg) : sizeof(struct ifinfomsg);
115c9b81 2337
e5eca6d4 2338 if (nlmsg_parse(nlh, hdrlen, tb, IFLA_MAX, ifla_policy) >= 0) {
a4b64fbe
ED		 2339 if (tb[IFLA_EXT_MASK])
2340 ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]);
2341 }
115c9b81
GR		 2342
2343 if (!ext_filter_mask)
2344 return NLMSG_GOODSIZE;
2345 /*
2346 * traverse the list of net devices and compute the minimum
2347 * buffer size based upon the filter mask.
2348 */
2349 list_for_each_entry(dev, &net->dev_base_head, dev_list) {
2350 min_ifinfo_dump_size = max_t(u16, min_ifinfo_dump_size,
2351 if_nlmsg_size(dev,
2352 ext_filter_mask));
2353 }
2354
c7ac8679
GR		 2355 return min_ifinfo_dump_size;
2356}
2357
42bad1da 2358static int rtnl_dump_all(struct sk_buff *skb, struct netlink_callback *cb)
1da177e4
LT		 2359{
2360 int idx;
2361 int s_idx = cb->family;
2362
2363 if (s_idx == 0)
2364 s_idx = 1;
25239cee 2365 for (idx = 1; idx <= RTNL_FAMILY_MAX; idx++) {
1da177e4
LT		 2366 int type = cb->nlh->nlmsg_type-RTM_BASE;
2367 if (idx < s_idx || idx == PF_PACKET)
2368 continue;
e2849863
TG		 2369 if (rtnl_msg_handlers[idx] == NULL ||
2370 rtnl_msg_handlers[idx][type].dumpit == NULL)
1da177e4 2371 continue;
0465277f 2372 if (idx > s_idx) {
1da177e4 2373 memset(&cb->args[0], 0, sizeof(cb->args));
0465277f
ND		 2374 cb->prev_seq = 0;
2375 cb->seq = 0;
2376 }
e2849863 2377 if (rtnl_msg_handlers[idx][type].dumpit(skb, cb))
1da177e4
LT		 2378 break;
2379 }
2380 cb->family = idx;
2381
2382 return skb->len;
2383}
2384
395eea6c
MB		 2385struct sk_buff *rtmsg_ifinfo_build_skb(int type, struct net_device *dev,
2386 unsigned int change, gfp_t flags)
1da177e4 2387{
c346dca1 2388 struct net *net = dev_net(dev);
1da177e4 2389 struct sk_buff *skb;
0ec6d3f4 2390 int err = -ENOBUFS;
c7ac8679 2391 size_t if_info_size;
1da177e4 2392
7f294054 2393 skb = nlmsg_new((if_info_size = if_nlmsg_size(dev, 0)), flags);
0ec6d3f4
TG		 2394 if (skb == NULL)
2395 goto errout;
1da177e4 2396
115c9b81 2397 err = rtnl_fill_ifinfo(skb, dev, type, 0, 0, change, 0, 0);
26932566
PM		 2398 if (err < 0) {
2399 /* -EMSGSIZE implies BUG in if_nlmsg_size() */
2400 WARN_ON(err == -EMSGSIZE);
2401 kfree_skb(skb);
2402 goto errout;
2403 }
395eea6c 2404 return skb;
0ec6d3f4
TG		 2405errout:
2406 if (err < 0)
4b3da706 2407 rtnl_set_sk_err(net, RTNLGRP_LINK, err);
395eea6c
MB		 2408 return NULL;
2409}
2410
2411void rtmsg_ifinfo_send(struct sk_buff *skb, struct net_device *dev, gfp_t flags)
2412{
2413 struct net *net = dev_net(dev);
2414
2415 rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, flags);
2416}
2417
2418void rtmsg_ifinfo(int type, struct net_device *dev, unsigned int change,
2419 gfp_t flags)
2420{
2421 struct sk_buff *skb;
2422
ed2a80ab
ND		 2423 if (dev->reg_state != NETREG_REGISTERED)
2424 return;
2425
395eea6c
MB		 2426 skb = rtmsg_ifinfo_build_skb(type, dev, change, flags);
2427 if (skb)
2428 rtmsg_ifinfo_send(skb, dev, flags);
1da177e4 2429}
471cb5a3 2430EXPORT_SYMBOL(rtmsg_ifinfo);
1da177e4 2431
d83b0603
JF		 2432static int nlmsg_populate_fdb_fill(struct sk_buff *skb,
2433 struct net_device *dev,
1e53d5bb 2434 u8 *addr, u16 vid, u32 pid, u32 seq,
1c104a6b
ND		 2435 int type, unsigned int flags,
2436 int nlflags)
d83b0603
JF		 2437{
2438 struct nlmsghdr *nlh;
2439 struct ndmsg *ndm;
2440
1c104a6b 2441 nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ndm), nlflags);
d83b0603
JF		 2442 if (!nlh)
2443 return -EMSGSIZE;
2444
2445 ndm = nlmsg_data(nlh);
2446 ndm->ndm_family = AF_BRIDGE;
2447 ndm->ndm_pad1 = 0;
2448 ndm->ndm_pad2 = 0;
2449 ndm->ndm_flags = flags;
2450 ndm->ndm_type = 0;
2451 ndm->ndm_ifindex = dev->ifindex;
2452 ndm->ndm_state = NUD_PERMANENT;
2453
2454 if (nla_put(skb, NDA_LLADDR, ETH_ALEN, addr))
2455 goto nla_put_failure;
1e53d5bb
HS		 2456 if (vid)
2457 if (nla_put(skb, NDA_VLAN, sizeof(u16), &vid))
2458 goto nla_put_failure;
d83b0603 2459
053c095a
JB		 2460 nlmsg_end(skb, nlh);
2461 return 0;
d83b0603
JF		 2462
2463nla_put_failure:
2464 nlmsg_cancel(skb, nlh);
2465 return -EMSGSIZE;
2466}
2467
3ff661c3
JF		 2468static inline size_t rtnl_fdb_nlmsg_size(void)
2469{
2470 return NLMSG_ALIGN(sizeof(struct ndmsg)) + nla_total_size(ETH_ALEN);
2471}
2472
1e53d5bb 2473static void rtnl_fdb_notify(struct net_device *dev, u8 *addr, u16 vid, int type)
3ff661c3
JF		 2474{
2475 struct net *net = dev_net(dev);
2476 struct sk_buff *skb;
2477 int err = -ENOBUFS;
2478
2479 skb = nlmsg_new(rtnl_fdb_nlmsg_size(), GFP_ATOMIC);
2480 if (!skb)
2481 goto errout;
2482
1e53d5bb
HS		 2483 err = nlmsg_populate_fdb_fill(skb, dev, addr, vid,
2484 0, 0, type, NTF_SELF, 0);
3ff661c3
JF		 2485 if (err < 0) {
2486 kfree_skb(skb);
2487 goto errout;
2488 }
2489
2490 rtnl_notify(skb, net, 0, RTNLGRP_NEIGH, NULL, GFP_ATOMIC);
2491 return;
2492errout:
2493 rtnl_set_sk_err(net, RTNLGRP_NEIGH, err);
2494}
2495
090096bf
VY		 2496/**
2497 * ndo_dflt_fdb_add - default netdevice operation to add an FDB entry
2498 */
2499int ndo_dflt_fdb_add(struct ndmsg *ndm,
2500 struct nlattr *tb[],
2501 struct net_device *dev,
f6f6424b 2502 const unsigned char *addr, u16 vid,
090096bf
VY		 2503 u16 flags)
2504{
2505 int err = -EINVAL;
2506
2507 /* If aging addresses are supported device will need to
2508 * implement its own handler for this.
2509 */
2510 if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
2511 pr_info("%s: FDB only supports static addresses\n", dev->name);
2512 return err;
2513 }
2514
65891fea
OG		 2515 if (vid) {
2516 pr_info("%s: vlans aren't supported yet for dev_uc|mc_add()\n", dev->name);
2517 return err;
2518 }
2519
090096bf
VY		 2520 if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
2521 err = dev_uc_add_excl(dev, addr);
2522 else if (is_multicast_ether_addr(addr))
2523 err = dev_mc_add_excl(dev, addr);
2524
2525 /* Only return duplicate errors if NLM_F_EXCL is set */
2526 if (err == -EEXIST && !(flags & NLM_F_EXCL))
2527 err = 0;
2528
2529 return err;
2530}
2531EXPORT_SYMBOL(ndo_dflt_fdb_add);
2532
f6f6424b
JP		 2533static int fdb_vid_parse(struct nlattr *vlan_attr, u16 *p_vid)
2534{
2535 u16 vid = 0;
2536
2537 if (vlan_attr) {
2538 if (nla_len(vlan_attr) != sizeof(u16)) {
2539 pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid vlan\n");
2540 return -EINVAL;
2541 }
2542
2543 vid = nla_get_u16(vlan_attr);
2544
2545 if (!vid || vid >= VLAN_VID_MASK) {
2546 pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid vlan id %d\n",
2547 vid);
2548 return -EINVAL;
2549 }
2550 }
2551 *p_vid = vid;
2552 return 0;
2553}
2554
661d2967 2555static int rtnl_fdb_add(struct sk_buff *skb, struct nlmsghdr *nlh)
77162022
JF		 2556{
2557 struct net *net = sock_net(skb->sk);
77162022
JF		 2558 struct ndmsg *ndm;
2559 struct nlattr *tb[NDA_MAX+1];
2560 struct net_device *dev;
2561 u8 *addr;
f6f6424b 2562 u16 vid;
77162022
JF		 2563 int err;
2564
2565 err = nlmsg_parse(nlh, sizeof(*ndm), tb, NDA_MAX, NULL);
2566 if (err < 0)
2567 return err;
2568
2569 ndm = nlmsg_data(nlh);
2570 if (ndm->ndm_ifindex == 0) {
2571 pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid ifindex\n");
2572 return -EINVAL;
2573 }
2574
2575 dev = __dev_get_by_index(net, ndm->ndm_ifindex);
2576 if (dev == NULL) {
2577 pr_info("PF_BRIDGE: RTM_NEWNEIGH with unknown ifindex\n");
2578 return -ENODEV;
2579 }
2580
2581 if (!tb[NDA_LLADDR] || nla_len(tb[NDA_LLADDR]) != ETH_ALEN) {
2582 pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid address\n");
2583 return -EINVAL;
2584 }
2585
2586 addr = nla_data(tb[NDA_LLADDR]);
77162022 2587
f6f6424b
JP		 2588 err = fdb_vid_parse(tb[NDA_VLAN], &vid);
2589 if (err)
2590 return err;
2591
77162022
JF		 2592 err = -EOPNOTSUPP;
2593
2594 /* Support fdb on master device the net/bridge default case */
2595 if ((!ndm->ndm_flags || ndm->ndm_flags & NTF_MASTER) &&
2596 (dev->priv_flags & IFF_BRIDGE_PORT)) {
898e5061
JP		 2597 struct net_device *br_dev = netdev_master_upper_dev_get(dev);
2598 const struct net_device_ops *ops = br_dev->netdev_ops;
2599
f6f6424b
JP		 2600 err = ops->ndo_fdb_add(ndm, tb, dev, addr, vid,
2601 nlh->nlmsg_flags);
77162022
JF		 2602 if (err)
2603 goto out;
2604 else
2605 ndm->ndm_flags &= ~NTF_MASTER;
2606 }
2607
2608 /* Embedded bridge, macvlan, and any other device support */
090096bf
VY		 2609 if ((ndm->ndm_flags & NTF_SELF)) {
2610 if (dev->netdev_ops->ndo_fdb_add)
2611 err = dev->netdev_ops->ndo_fdb_add(ndm, tb, dev, addr,
f6f6424b 2612 vid,
090096bf
VY		 2613 nlh->nlmsg_flags);
2614 else
f6f6424b 2615 err = ndo_dflt_fdb_add(ndm, tb, dev, addr, vid,
090096bf 2616 nlh->nlmsg_flags);
77162022 2617
3ff661c3 2618 if (!err) {
1e53d5bb 2619 rtnl_fdb_notify(dev, addr, vid, RTM_NEWNEIGH);
77162022 2620 ndm->ndm_flags &= ~NTF_SELF;
3ff661c3 2621 }
77162022
JF		 2622 }
2623out:
2624 return err;
2625}
2626
090096bf
VY		 2627/**
2628 * ndo_dflt_fdb_del - default netdevice operation to delete an FDB entry
2629 */
2630int ndo_dflt_fdb_del(struct ndmsg *ndm,
2631 struct nlattr *tb[],
2632 struct net_device *dev,
f6f6424b 2633 const unsigned char *addr, u16 vid)
090096bf 2634{
c8a89c4a 2635 int err = -EINVAL;
090096bf
VY		 2636
2637 /* If aging addresses are supported device will need to
2638 * implement its own handler for this.
2639 */
64535993 2640 if (!(ndm->ndm_state & NUD_PERMANENT)) {
090096bf 2641 pr_info("%s: FDB only supports static addresses\n", dev->name);
c8a89c4a 2642 return err;
090096bf
VY		 2643 }
2644
2645 if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
2646 err = dev_uc_del(dev, addr);
2647 else if (is_multicast_ether_addr(addr))
2648 err = dev_mc_del(dev, addr);
090096bf
VY		 2649
2650 return err;
2651}
2652EXPORT_SYMBOL(ndo_dflt_fdb_del);
2653
661d2967 2654static int rtnl_fdb_del(struct sk_buff *skb, struct nlmsghdr *nlh)
77162022
JF		 2655{
2656 struct net *net = sock_net(skb->sk);
2657 struct ndmsg *ndm;
1690be63 2658 struct nlattr *tb[NDA_MAX+1];
77162022
JF		 2659 struct net_device *dev;
2660 int err = -EINVAL;
2661 __u8 *addr;
f6f6424b 2662 u16 vid;
77162022 2663
90f62cf3 2664 if (!netlink_capable(skb, CAP_NET_ADMIN))
1690be63
VY		 2665 return -EPERM;
2666
2667 err = nlmsg_parse(nlh, sizeof(*ndm), tb, NDA_MAX, NULL);
2668 if (err < 0)
2669 return err;
77162022
JF		 2670
2671 ndm = nlmsg_data(nlh);
2672 if (ndm->ndm_ifindex == 0) {
2673 pr_info("PF_BRIDGE: RTM_DELNEIGH with invalid ifindex\n");
2674 return -EINVAL;
2675 }
2676
2677 dev = __dev_get_by_index(net, ndm->ndm_ifindex);
2678 if (dev == NULL) {
2679 pr_info("PF_BRIDGE: RTM_DELNEIGH with unknown ifindex\n");
2680 return -ENODEV;
2681 }
2682
1690be63
VY		 2683 if (!tb[NDA_LLADDR] || nla_len(tb[NDA_LLADDR]) != ETH_ALEN) {
2684 pr_info("PF_BRIDGE: RTM_DELNEIGH with invalid address\n");
2685 return -EINVAL;
2686 }
2687
2688 addr = nla_data(tb[NDA_LLADDR]);
77162022 2689
f6f6424b
JP		 2690 err = fdb_vid_parse(tb[NDA_VLAN], &vid);
2691 if (err)
2692 return err;
2693
77162022
JF		 2694 err = -EOPNOTSUPP;
2695
2696 /* Support fdb on master device the net/bridge default case */
2697 if ((!ndm->ndm_flags || ndm->ndm_flags & NTF_MASTER) &&
2698 (dev->priv_flags & IFF_BRIDGE_PORT)) {
898e5061
JP		 2699 struct net_device *br_dev = netdev_master_upper_dev_get(dev);
2700 const struct net_device_ops *ops = br_dev->netdev_ops;
77162022 2701
898e5061 2702 if (ops->ndo_fdb_del)
f6f6424b 2703 err = ops->ndo_fdb_del(ndm, tb, dev, addr, vid);
77162022
JF		 2704
2705 if (err)
2706 goto out;
2707 else
2708 ndm->ndm_flags &= ~NTF_MASTER;
2709 }
2710
2711 /* Embedded bridge, macvlan, and any other device support */
090096bf
VY		 2712 if (ndm->ndm_flags & NTF_SELF) {
2713 if (dev->netdev_ops->ndo_fdb_del)
f6f6424b
JP		 2714 err = dev->netdev_ops->ndo_fdb_del(ndm, tb, dev, addr,
2715 vid);
090096bf 2716 else
f6f6424b 2717 err = ndo_dflt_fdb_del(ndm, tb, dev, addr, vid);
77162022 2718
3ff661c3 2719 if (!err) {
1e53d5bb 2720 rtnl_fdb_notify(dev, addr, vid, RTM_DELNEIGH);
77162022 2721 ndm->ndm_flags &= ~NTF_SELF;
3ff661c3 2722 }
77162022
JF		 2723 }
2724out:
2725 return err;
2726}
2727
d83b0603
JF		 2728static int nlmsg_populate_fdb(struct sk_buff *skb,
2729 struct netlink_callback *cb,
2730 struct net_device *dev,
2731 int *idx,
2732 struct netdev_hw_addr_list *list)
2733{
2734 struct netdev_hw_addr *ha;
2735 int err;
15e47304 2736 u32 portid, seq;
d83b0603 2737
15e47304 2738 portid = NETLINK_CB(cb->skb).portid;
d83b0603
JF		 2739 seq = cb->nlh->nlmsg_seq;
2740
2741 list_for_each_entry(ha, &list->list, list) {
2742 if (*idx < cb->args[0])
2743 goto skip;
2744
1e53d5bb 2745 err = nlmsg_populate_fdb_fill(skb, dev, ha->addr, 0,
a7a558fe 2746 portid, seq,
1c104a6b
ND		 2747 RTM_NEWNEIGH, NTF_SELF,
2748 NLM_F_MULTI);
d83b0603
JF		 2749 if (err < 0)
2750 return err;
2751skip:
2752 *idx += 1;
2753 }
2754 return 0;
2755}
2756
2757/**
2c53040f 2758 * ndo_dflt_fdb_dump - default netdevice operation to dump an FDB table.
d83b0603
JF		 2759 * @nlh: netlink message header
2760 * @dev: netdevice
2761 *
2762 * Default netdevice operation to dump the existing unicast address list.
91f3e7b1 2763 * Returns number of addresses from list put in skb.
d83b0603
JF		 2764 */
2765int ndo_dflt_fdb_dump(struct sk_buff *skb,
2766 struct netlink_callback *cb,
2767 struct net_device *dev,
5d5eacb3 2768 struct net_device *filter_dev,
d83b0603
JF		 2769 int idx)
2770{
2771 int err;
2772
2773 netif_addr_lock_bh(dev);
2774 err = nlmsg_populate_fdb(skb, cb, dev, &idx, &dev->uc);
2775 if (err)
2776 goto out;
2777 nlmsg_populate_fdb(skb, cb, dev, &idx, &dev->mc);
2778out:
2779 netif_addr_unlock_bh(dev);
2780 return idx;
2781}
2782EXPORT_SYMBOL(ndo_dflt_fdb_dump);
2783
77162022
JF		 2784static int rtnl_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb)
2785{
77162022 2786 struct net_device *dev;
5e6d2435 2787 struct nlattr *tb[IFLA_MAX+1];
5e6d2435
JHS		 2788 struct net_device *br_dev = NULL;
2789 const struct net_device_ops *ops = NULL;
2790 const struct net_device_ops *cops = NULL;
2791 struct ifinfomsg *ifm = nlmsg_data(cb->nlh);
2792 struct net *net = sock_net(skb->sk);
2793 int brport_idx = 0;
2794 int br_idx = 0;
2795 int idx = 0;
2796
2797 if (nlmsg_parse(cb->nlh, sizeof(struct ifinfomsg), tb, IFLA_MAX,
2798 ifla_policy) == 0) {
2799 if (tb[IFLA_MASTER])
2800 br_idx = nla_get_u32(tb[IFLA_MASTER]);
2801 }
2802
2803 brport_idx = ifm->ifi_index;
2804
2805 if (br_idx) {
2806 br_dev = __dev_get_by_index(net, br_idx);
2807 if (!br_dev)
2808 return -ENODEV;
2809
2810 ops = br_dev->netdev_ops;
5e6d2435
JHS		 2811 }
2812
2813 for_each_netdev(net, dev) {
2814 if (brport_idx && (dev->ifindex != brport_idx))
2815 continue;
2816
2817 if (!br_idx) { /* user did not specify a specific bridge */
2818 if (dev->priv_flags & IFF_BRIDGE_PORT) {
2819 br_dev = netdev_master_upper_dev_get(dev);
2820 cops = br_dev->netdev_ops;
2821 }
2822
5e6d2435
JHS		 2823 } else {
2824 if (dev != br_dev &&
2825 !(dev->priv_flags & IFF_BRIDGE_PORT))
2826 continue;
2827
2828 if (br_dev != netdev_master_upper_dev_get(dev) &&
2829 !(dev->priv_flags & IFF_EBRIDGE))
2830 continue;
2831
5e6d2435
JHS		 2832 cops = ops;
2833 }
77162022 2834
77162022 2835 if (dev->priv_flags & IFF_BRIDGE_PORT) {
5e6d2435
JHS		 2836 if (cops && cops->ndo_fdb_dump)
2837 idx = cops->ndo_fdb_dump(skb, cb, br_dev, dev,
2838 idx);
77162022
JF		 2839 }
2840
2841 if (dev->netdev_ops->ndo_fdb_dump)
6cb69742 2842 idx = dev->netdev_ops->ndo_fdb_dump(skb, cb, dev, NULL,
5d5eacb3 2843 idx);
6cb69742
HS		 2844 else
2845 idx = ndo_dflt_fdb_dump(skb, cb, dev, NULL, idx);
5e6d2435
JHS		 2846
2847 cops = NULL;
77162022 2848 }
77162022
JF		 2849
2850 cb->args[0] = idx;
2851 return skb->len;
2852}
2853
2c3c031c
SF		 2854static int brport_nla_put_flag(struct sk_buff *skb, u32 flags, u32 mask,
2855 unsigned int attrnum, unsigned int flag)
2856{
2857 if (mask & flag)
2858 return nla_put_u8(skb, attrnum, !!(flags & flag));
2859 return 0;
2860}
2861
815cccbf 2862int ndo_dflt_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
2c3c031c 2863 struct net_device *dev, u16 mode,
46c264da 2864 u32 flags, u32 mask, int nlflags)
815cccbf
JF		 2865{
2866 struct nlmsghdr *nlh;
2867 struct ifinfomsg *ifm;
2868 struct nlattr *br_afspec;
2c3c031c 2869 struct nlattr *protinfo;
815cccbf 2870 u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN;
898e5061 2871 struct net_device *br_dev = netdev_master_upper_dev_get(dev);
815cccbf 2872
46c264da 2873 nlh = nlmsg_put(skb, pid, seq, RTM_NEWLINK, sizeof(*ifm), nlflags);
815cccbf
JF		 2874 if (nlh == NULL)
2875 return -EMSGSIZE;
2876
2877 ifm = nlmsg_data(nlh);
2878 ifm->ifi_family = AF_BRIDGE;
2879 ifm->__ifi_pad = 0;
2880 ifm->ifi_type = dev->type;
2881 ifm->ifi_index = dev->ifindex;
2882 ifm->ifi_flags = dev_get_flags(dev);
2883 ifm->ifi_change = 0;
2884
2885
2886 if (nla_put_string(skb, IFLA_IFNAME, dev->name) ||
2887 nla_put_u32(skb, IFLA_MTU, dev->mtu) ||
2888 nla_put_u8(skb, IFLA_OPERSTATE, operstate) ||
898e5061
JP		 2889 (br_dev &&
2890 nla_put_u32(skb, IFLA_MASTER, br_dev->ifindex)) ||
815cccbf
JF		 2891 (dev->addr_len &&
2892 nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) ||
a54acb3a
ND		 2893 (dev->ifindex != dev_get_iflink(dev) &&
2894 nla_put_u32(skb, IFLA_LINK, dev_get_iflink(dev))))
815cccbf
JF		 2895 goto nla_put_failure;
2896
2897 br_afspec = nla_nest_start(skb, IFLA_AF_SPEC);
2898 if (!br_afspec)
2899 goto nla_put_failure;
2900
1d460b98 2901 if (nla_put_u16(skb, IFLA_BRIDGE_FLAGS, BRIDGE_FLAGS_SELF)) {
815cccbf
JF		 2902 nla_nest_cancel(skb, br_afspec);
2903 goto nla_put_failure;
2904 }
1d460b98
RP		 2905
2906 if (mode != BRIDGE_MODE_UNDEF) {
2907 if (nla_put_u16(skb, IFLA_BRIDGE_MODE, mode)) {
2908 nla_nest_cancel(skb, br_afspec);
2909 goto nla_put_failure;
2910 }
2911 }
815cccbf
JF		 2912 nla_nest_end(skb, br_afspec);
2913
2c3c031c
SF		 2914 protinfo = nla_nest_start(skb, IFLA_PROTINFO | NLA_F_NESTED);
2915 if (!protinfo)
2916 goto nla_put_failure;
2917
2918 if (brport_nla_put_flag(skb, flags, mask,
2919 IFLA_BRPORT_MODE, BR_HAIRPIN_MODE) ||
2920 brport_nla_put_flag(skb, flags, mask,
2921 IFLA_BRPORT_GUARD, BR_BPDU_GUARD) ||
2922 brport_nla_put_flag(skb, flags, mask,
2923 IFLA_BRPORT_FAST_LEAVE,
2924 BR_MULTICAST_FAST_LEAVE) ||
2925 brport_nla_put_flag(skb, flags, mask,
2926 IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK) ||
2927 brport_nla_put_flag(skb, flags, mask,
2928 IFLA_BRPORT_LEARNING, BR_LEARNING) ||
2929 brport_nla_put_flag(skb, flags, mask,
2930 IFLA_BRPORT_LEARNING_SYNC, BR_LEARNING_SYNC) ||
2931 brport_nla_put_flag(skb, flags, mask,
2932 IFLA_BRPORT_UNICAST_FLOOD, BR_FLOOD) ||
2933 brport_nla_put_flag(skb, flags, mask,
2934 IFLA_BRPORT_PROXYARP, BR_PROXYARP)) {
2935 nla_nest_cancel(skb, protinfo);
2936 goto nla_put_failure;
2937 }
2938
2939 nla_nest_end(skb, protinfo);
2940
053c095a
JB		 2941 nlmsg_end(skb, nlh);
2942 return 0;
815cccbf
JF		 2943nla_put_failure:
2944 nlmsg_cancel(skb, nlh);
2945 return -EMSGSIZE;
2946}
2947EXPORT_SYMBOL(ndo_dflt_bridge_getlink);
2948
e5a55a89
JF		 2949static int rtnl_bridge_getlink(struct sk_buff *skb, struct netlink_callback *cb)
2950{
2951 struct net *net = sock_net(skb->sk);
2952 struct net_device *dev;
2953 int idx = 0;
2954 u32 portid = NETLINK_CB(cb->skb).portid;
2955 u32 seq = cb->nlh->nlmsg_seq;
6cbdceeb
VY		 2956 u32 filter_mask = 0;
2957
aa68c20f
TG		 2958 if (nlmsg_len(cb->nlh) > sizeof(struct ifinfomsg)) {
2959 struct nlattr *extfilt;
2960
2961 extfilt = nlmsg_find_attr(cb->nlh, sizeof(struct ifinfomsg),
2962 IFLA_EXT_MASK);
2963 if (extfilt) {
2964 if (nla_len(extfilt) < sizeof(filter_mask))
2965 return -EINVAL;
2966
2967 filter_mask = nla_get_u32(extfilt);
2968 }
2969 }
e5a55a89
JF		 2970
2971 rcu_read_lock();
2972 for_each_netdev_rcu(net, dev) {
2973 const struct net_device_ops *ops = dev->netdev_ops;
898e5061 2974 struct net_device *br_dev = netdev_master_upper_dev_get(dev);
e5a55a89 2975
898e5061 2976 if (br_dev && br_dev->netdev_ops->ndo_bridge_getlink) {
25b1e679 2977 if (idx >= cb->args[0] &&
898e5061 2978 br_dev->netdev_ops->ndo_bridge_getlink(
46c264da
ND		 2979 skb, portid, seq, dev, filter_mask,
2980 NLM_F_MULTI) < 0)
e5a55a89 2981 break;
25b1e679 2982 idx++;
e5a55a89
JF		 2983 }
2984
2985 if (ops->ndo_bridge_getlink) {
25b1e679 2986 if (idx >= cb->args[0] &&
6cbdceeb 2987 ops->ndo_bridge_getlink(skb, portid, seq, dev,
46c264da
ND		 2988 filter_mask,
2989 NLM_F_MULTI) < 0)
e5a55a89 2990 break;
25b1e679 2991 idx++;
e5a55a89
JF		 2992 }
2993 }
2994 rcu_read_unlock();
2995 cb->args[0] = idx;
2996
2997 return skb->len;
2998}
2999
2469ffd7
JF		 3000static inline size_t bridge_nlmsg_size(void)
3001{
3002 return NLMSG_ALIGN(sizeof(struct ifinfomsg))
3003 + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */
3004 + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */
3005 + nla_total_size(sizeof(u32)) /* IFLA_MASTER */
3006 + nla_total_size(sizeof(u32)) /* IFLA_MTU */
3007 + nla_total_size(sizeof(u32)) /* IFLA_LINK */
3008 + nla_total_size(sizeof(u32)) /* IFLA_OPERSTATE */
3009 + nla_total_size(sizeof(u8)) /* IFLA_PROTINFO */
3010 + nla_total_size(sizeof(struct nlattr)) /* IFLA_AF_SPEC */
3011 + nla_total_size(sizeof(u16)) /* IFLA_BRIDGE_FLAGS */
3012 + nla_total_size(sizeof(u16)); /* IFLA_BRIDGE_MODE */
3013}
3014
02dba438 3015static int rtnl_bridge_notify(struct net_device *dev)
2469ffd7
JF		 3016{
3017 struct net *net = dev_net(dev);
2469ffd7
JF		 3018 struct sk_buff *skb;
3019 int err = -EOPNOTSUPP;
3020
02dba438
RP		 3021 if (!dev->netdev_ops->ndo_bridge_getlink)
3022 return 0;
3023
2469ffd7
JF		 3024 skb = nlmsg_new(bridge_nlmsg_size(), GFP_ATOMIC);
3025 if (!skb) {
3026 err = -ENOMEM;
3027 goto errout;
3028 }
3029
46c264da 3030 err = dev->netdev_ops->ndo_bridge_getlink(skb, 0, 0, dev, 0, 0);
02dba438
RP		 3031 if (err < 0)
3032 goto errout;
2469ffd7 3033
59ccaaaa
RP		 3034 if (!skb->len)
3035 goto errout;
3036
2469ffd7
JF		 3037 rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC);
3038 return 0;
3039errout:
3040 WARN_ON(err == -EMSGSIZE);
3041 kfree_skb(skb);
59ccaaaa
RP		 3042 if (err)
3043 rtnl_set_sk_err(net, RTNLGRP_LINK, err);
2469ffd7
JF		 3044 return err;
3045}
3046
661d2967 3047static int rtnl_bridge_setlink(struct sk_buff *skb, struct nlmsghdr *nlh)
e5a55a89
JF		 3048{
3049 struct net *net = sock_net(skb->sk);
3050 struct ifinfomsg *ifm;
3051 struct net_device *dev;
2469ffd7
JF		 3052 struct nlattr *br_spec, *attr = NULL;
3053 int rem, err = -EOPNOTSUPP;
4de8b413 3054 u16 flags = 0;
c38e01b8 3055 bool have_flags = false;
e5a55a89
JF		 3056
3057 if (nlmsg_len(nlh) < sizeof(*ifm))
3058 return -EINVAL;
3059
3060 ifm = nlmsg_data(nlh);
3061 if (ifm->ifi_family != AF_BRIDGE)
3062 return -EPFNOSUPPORT;
3063
3064 dev = __dev_get_by_index(net, ifm->ifi_index);
3065 if (!dev) {
3066 pr_info("PF_BRIDGE: RTM_SETLINK with unknown ifindex\n");
3067 return -ENODEV;
3068 }
3069
2469ffd7
JF		 3070 br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
3071 if (br_spec) {
3072 nla_for_each_nested(attr, br_spec, rem) {
3073 if (nla_type(attr) == IFLA_BRIDGE_FLAGS) {
6e8d1c55
TG		 3074 if (nla_len(attr) < sizeof(flags))
3075 return -EINVAL;
3076
c38e01b8 3077 have_flags = true;
2469ffd7
JF		 3078 flags = nla_get_u16(attr);
3079 break;
3080 }
3081 }
3082 }
3083
3084 if (!flags || (flags & BRIDGE_FLAGS_MASTER)) {
898e5061
JP		 3085 struct net_device *br_dev = netdev_master_upper_dev_get(dev);
3086
3087 if (!br_dev || !br_dev->netdev_ops->ndo_bridge_setlink) {
2469ffd7
JF		 3088 err = -EOPNOTSUPP;
3089 goto out;
3090 }
3091
add511b3 3092 err = br_dev->netdev_ops->ndo_bridge_setlink(dev, nlh, flags);
e5a55a89
JF		 3093 if (err)
3094 goto out;
2469ffd7
JF		 3095
3096 flags &= ~BRIDGE_FLAGS_MASTER;
e5a55a89
JF		 3097 }
3098
2469ffd7
JF		 3099 if ((flags & BRIDGE_FLAGS_SELF)) {
3100 if (!dev->netdev_ops->ndo_bridge_setlink)
3101 err = -EOPNOTSUPP;
3102 else
add511b3
RP		 3103 err = dev->netdev_ops->ndo_bridge_setlink(dev, nlh,
3104 flags);
02dba438 3105 if (!err) {
2469ffd7 3106 flags &= ~BRIDGE_FLAGS_SELF;
02dba438
RP		 3107
3108 /* Generate event to notify upper layer of bridge
3109 * change
3110 */
3111 err = rtnl_bridge_notify(dev);
3112 }
2469ffd7 3113 }
e5a55a89 3114
c38e01b8 3115 if (have_flags)
2469ffd7 3116 memcpy(nla_data(attr), &flags, sizeof(flags));
e5a55a89
JF		 3117out:
3118 return err;
3119}
3120
661d2967 3121static int rtnl_bridge_dellink(struct sk_buff *skb, struct nlmsghdr *nlh)
407af329
VY		 3122{
3123 struct net *net = sock_net(skb->sk);
3124 struct ifinfomsg *ifm;
3125 struct net_device *dev;
3126 struct nlattr *br_spec, *attr = NULL;
3127 int rem, err = -EOPNOTSUPP;
4de8b413 3128 u16 flags = 0;
407af329
VY		 3129 bool have_flags = false;
3130
3131 if (nlmsg_len(nlh) < sizeof(*ifm))
3132 return -EINVAL;
3133
3134 ifm = nlmsg_data(nlh);
3135 if (ifm->ifi_family != AF_BRIDGE)
3136 return -EPFNOSUPPORT;
3137
3138 dev = __dev_get_by_index(net, ifm->ifi_index);
3139 if (!dev) {
3140 pr_info("PF_BRIDGE: RTM_SETLINK with unknown ifindex\n");
3141 return -ENODEV;
3142 }
3143
3144 br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
3145 if (br_spec) {
3146 nla_for_each_nested(attr, br_spec, rem) {
3147 if (nla_type(attr) == IFLA_BRIDGE_FLAGS) {
6e8d1c55
TG		 3148 if (nla_len(attr) < sizeof(flags))
3149 return -EINVAL;
3150
407af329
VY		 3151 have_flags = true;
3152 flags = nla_get_u16(attr);
3153 break;
3154 }
3155 }
3156 }
3157
407af329
VY		 3158 if (!flags || (flags & BRIDGE_FLAGS_MASTER)) {
3159 struct net_device *br_dev = netdev_master_upper_dev_get(dev);
3160
3161 if (!br_dev || !br_dev->netdev_ops->ndo_bridge_dellink) {
3162 err = -EOPNOTSUPP;
3163 goto out;
3164 }
3165
add511b3 3166 err = br_dev->netdev_ops->ndo_bridge_dellink(dev, nlh, flags);
407af329
VY		 3167 if (err)
3168 goto out;
3169
3170 flags &= ~BRIDGE_FLAGS_MASTER;
3171 }
3172
3173 if ((flags & BRIDGE_FLAGS_SELF)) {
3174 if (!dev->netdev_ops->ndo_bridge_dellink)
3175 err = -EOPNOTSUPP;
3176 else
add511b3
RP		 3177 err = dev->netdev_ops->ndo_bridge_dellink(dev, nlh,
3178 flags);
407af329 3179
02dba438 3180 if (!err) {
407af329 3181 flags &= ~BRIDGE_FLAGS_SELF;
02dba438
RP		 3182
3183 /* Generate event to notify upper layer of bridge
3184 * change
3185 */
3186 err = rtnl_bridge_notify(dev);
3187 }
407af329
VY		 3188 }
3189
3190 if (have_flags)
3191 memcpy(nla_data(attr), &flags, sizeof(flags));
407af329
VY		 3192out:
3193 return err;
3194}
3195
1da177e4
LT		 3196/* Process one rtnetlink message. */
3197
1d00a4eb 3198static int rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
1da177e4 3199{
3b1e0a65 3200 struct net *net = sock_net(skb->sk);
e2849863 3201 rtnl_doit_func doit;
1da177e4 3202 int sz_idx, kind;
1da177e4
LT		 3203 int family;
3204 int type;
2907c35f 3205 int err;
1da177e4 3206
1da177e4 3207 type = nlh->nlmsg_type;
1da177e4 3208 if (type > RTM_MAX)
038890fe 3209 return -EOPNOTSUPP;
1da177e4
LT		 3210
3211 type -= RTM_BASE;
3212
3213 /* All the messages must have at least 1 byte length */
573ce260 3214 if (nlmsg_len(nlh) < sizeof(struct rtgenmsg))
1da177e4
LT		 3215 return 0;
3216
573ce260 3217 family = ((struct rtgenmsg *)nlmsg_data(nlh))->rtgen_family;
1da177e4
LT		 3218 sz_idx = type>>2;
3219 kind = type&3;
3220
90f62cf3 3221 if (kind != 2 && !netlink_net_capable(skb, CAP_NET_ADMIN))
1d00a4eb 3222 return -EPERM;
1da177e4 3223
b8f3ab42 3224 if (kind == 2 && nlh->nlmsg_flags&NLM_F_DUMP) {
97c53cac 3225 struct sock *rtnl;
e2849863 3226 rtnl_dumpit_func dumpit;
c7ac8679
GR		 3227 rtnl_calcit_func calcit;
3228 u16 min_dump_alloc = 0;
1da177e4 3229
e2849863
TG		 3230 dumpit = rtnl_get_dumpit(family, type);
3231 if (dumpit == NULL)
038890fe 3232 return -EOPNOTSUPP;
c7ac8679
GR		 3233 calcit = rtnl_get_calcit(family, type);
3234 if (calcit)
115c9b81 3235 min_dump_alloc = calcit(skb, nlh);
9ac4a169 3236
2907c35f 3237 __rtnl_unlock();
97c53cac 3238 rtnl = net->rtnl;
80d326fa
PNA		 3239 {
3240 struct netlink_dump_control c = {
3241 .dump = dumpit,
3242 .min_dump_alloc = min_dump_alloc,
3243 };
3244 err = netlink_dump_start(rtnl, skb, nlh, &c);
3245 }
2907c35f
ED		 3246 rtnl_lock();
3247 return err;
1da177e4
LT		 3248 }
3249
e2849863
TG		 3250 doit = rtnl_get_doit(family, type);
3251 if (doit == NULL)
038890fe 3252 return -EOPNOTSUPP;
1da177e4 3253
661d2967 3254 return doit(skb, nlh);
1da177e4
LT		 3255}
3256
cd40b7d3 3257static void rtnetlink_rcv(struct sk_buff *skb)
1da177e4 3258{
cd40b7d3
DL		 3259 rtnl_lock();
3260 netlink_rcv_skb(skb, &rtnetlink_rcv_msg);
3261 rtnl_unlock();
1da177e4
LT		 3262}
3263
1da177e4
LT		 3264static int rtnetlink_event(struct notifier_block *this, unsigned long event, void *ptr)
3265{
351638e7 3266 struct net_device *dev = netdev_notifier_info_to_dev(ptr);
e9dc8653 3267
1da177e4 3268 switch (event) {
1da177e4
LT		 3269 case NETDEV_UP:
3270 case NETDEV_DOWN:
10de05af 3271 case NETDEV_PRE_UP:
d90a909e
EB		 3272 case NETDEV_POST_INIT:
3273 case NETDEV_REGISTER:
1da177e4 3274 case NETDEV_CHANGE:
755d0e77 3275 case NETDEV_PRE_TYPE_CHANGE:
1da177e4 3276 case NETDEV_GOING_DOWN:
a2835763 3277 case NETDEV_UNREGISTER:
0115e8e3 3278 case NETDEV_UNREGISTER_FINAL:
ac3d3f81
AW		 3279 case NETDEV_RELEASE:
3280 case NETDEV_JOIN:
61bd3857 3281 case NETDEV_BONDING_INFO:
1da177e4
LT		 3282 break;
3283 default:
7f294054 3284 rtmsg_ifinfo(RTM_NEWLINK, dev, 0, GFP_KERNEL);
1da177e4
LT		 3285 break;
3286 }
3287 return NOTIFY_DONE;
3288}
3289
3290static struct notifier_block rtnetlink_dev_notifier = {
3291 .notifier_call = rtnetlink_event,
3292};
3293
97c53cac 3294
2c8c1e72 3295static int __net_init rtnetlink_net_init(struct net *net)
97c53cac
DL		 3296{
3297 struct sock *sk;
a31f2d17
PNA		 3298 struct netlink_kernel_cfg cfg = {
3299 .groups = RTNLGRP_MAX,
3300 .input = rtnetlink_rcv,
3301 .cb_mutex = &rtnl_mutex,
9785e10a 3302 .flags = NL_CFG_F_NONROOT_RECV,
a31f2d17
PNA		 3303 };
3304
9f00d977 3305 sk = netlink_kernel_create(net, NETLINK_ROUTE, &cfg);
97c53cac
DL		 3306 if (!sk)
3307 return -ENOMEM;
97c53cac
DL		 3308 net->rtnl = sk;
3309 return 0;
3310}
3311
2c8c1e72 3312static void __net_exit rtnetlink_net_exit(struct net *net)
97c53cac 3313{
775516bf
DL		 3314 netlink_kernel_release(net->rtnl);
3315 net->rtnl = NULL;
97c53cac
DL		 3316}
3317
3318static struct pernet_operations rtnetlink_net_ops = {
3319 .init = rtnetlink_net_init,
3320 .exit = rtnetlink_net_exit,
3321};
3322
1da177e4
LT		 3323void __init rtnetlink_init(void)
3324{
97c53cac 3325 if (register_pernet_subsys(&rtnetlink_net_ops))
1da177e4 3326 panic("rtnetlink_init: cannot initialize rtnetlink\n");
97c53cac 3327
1da177e4 3328 register_netdevice_notifier(&rtnetlink_dev_notifier);
340d17fc 3329
c7ac8679
GR		 3330 rtnl_register(PF_UNSPEC, RTM_GETLINK, rtnl_getlink,
3331 rtnl_dump_ifinfo, rtnl_calcit);
3332 rtnl_register(PF_UNSPEC, RTM_SETLINK, rtnl_setlink, NULL, NULL);
3333 rtnl_register(PF_UNSPEC, RTM_NEWLINK, rtnl_newlink, NULL, NULL);
3334 rtnl_register(PF_UNSPEC, RTM_DELLINK, rtnl_dellink, NULL, NULL);
687ad8cc 3335
c7ac8679
GR		 3336 rtnl_register(PF_UNSPEC, RTM_GETADDR, NULL, rtnl_dump_all, NULL);
3337 rtnl_register(PF_UNSPEC, RTM_GETROUTE, NULL, rtnl_dump_all, NULL);
77162022
JF		 3338
3339 rtnl_register(PF_BRIDGE, RTM_NEWNEIGH, rtnl_fdb_add, NULL, NULL);
3340 rtnl_register(PF_BRIDGE, RTM_DELNEIGH, rtnl_fdb_del, NULL, NULL);
3341 rtnl_register(PF_BRIDGE, RTM_GETNEIGH, NULL, rtnl_fdb_dump, NULL);
e5a55a89
JF		 3342
3343 rtnl_register(PF_BRIDGE, RTM_GETLINK, NULL, rtnl_bridge_getlink, NULL);
407af329 3344 rtnl_register(PF_BRIDGE, RTM_DELLINK, rtnl_bridge_dellink, NULL, NULL);
e5a55a89 3345 rtnl_register(PF_BRIDGE, RTM_SETLINK, rtnl_bridge_setlink, NULL, NULL);
1da177e4
LT		 3346}
3347
Linux kernel - Deliverables
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