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net: fix sk_mem_reclaim_partial()
[GitHub/mt8127/android_kernel_alcatel_ttab.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>
ebc08a6f 39#include <linux/pci.h>
77162022 40#include <linux/etherdevice.h>
1da177e4
LT		 41
42#include <asm/uaccess.h>
1da177e4
LT		 43
44#include <linux/inet.h>
45#include <linux/netdevice.h>
46#include <net/ip.h>
47#include <net/protocol.h>
48#include <net/arp.h>
49#include <net/route.h>
50#include <net/udp.h>
51#include <net/sock.h>
52#include <net/pkt_sched.h>
14c0b97d 53#include <net/fib_rules.h>
e2849863 54#include <net/rtnetlink.h>
30ffee84 55#include <net/net_namespace.h>
1da177e4 56
e0d087af 57struct rtnl_link {
e2849863
TG		 58 rtnl_doit_func doit;
59 rtnl_dumpit_func dumpit;
c7ac8679 60 rtnl_calcit_func calcit;
e2849863
TG		 61};
62
6756ae4b 63static DEFINE_MUTEX(rtnl_mutex);
1da177e4
LT		 64
65void rtnl_lock(void)
66{
6756ae4b 67 mutex_lock(&rtnl_mutex);
1da177e4 68}
e0d087af 69EXPORT_SYMBOL(rtnl_lock);
1da177e4 70
6756ae4b 71void __rtnl_unlock(void)
1da177e4 72{
6756ae4b 73 mutex_unlock(&rtnl_mutex);
1da177e4 74}
6756ae4b 75
1da177e4
LT		 76void rtnl_unlock(void)
77{
58ec3b4d 78 /* This fellow will unlock it for us. */
1da177e4
LT		 79 netdev_run_todo();
80}
e0d087af 81EXPORT_SYMBOL(rtnl_unlock);
1da177e4 82
6756ae4b
SH		 83int rtnl_trylock(void)
84{
85 return mutex_trylock(&rtnl_mutex);
86}
e0d087af 87EXPORT_SYMBOL(rtnl_trylock);
6756ae4b 88
c9c1014b
PM		 89int rtnl_is_locked(void)
90{
91 return mutex_is_locked(&rtnl_mutex);
92}
e0d087af 93EXPORT_SYMBOL(rtnl_is_locked);
c9c1014b 94
a898def2
PM		 95#ifdef CONFIG_PROVE_LOCKING
96int lockdep_rtnl_is_held(void)
97{
98 return lockdep_is_held(&rtnl_mutex);
99}
100EXPORT_SYMBOL(lockdep_rtnl_is_held);
101#endif /* #ifdef CONFIG_PROVE_LOCKING */
102
25239cee 103static struct rtnl_link *rtnl_msg_handlers[RTNL_FAMILY_MAX + 1];
e2849863
TG		 104
105static inline int rtm_msgindex(int msgtype)
106{
107 int msgindex = msgtype - RTM_BASE;
108
109 /*
110 * msgindex < 0 implies someone tried to register a netlink
111 * control code. msgindex >= RTM_NR_MSGTYPES may indicate that
112 * the message type has not been added to linux/rtnetlink.h
113 */
114 BUG_ON(msgindex < 0 || msgindex >= RTM_NR_MSGTYPES);
115
116 return msgindex;
117}
118
119static rtnl_doit_func rtnl_get_doit(int protocol, int msgindex)
120{
121 struct rtnl_link *tab;
122
25239cee 123 if (protocol <= RTNL_FAMILY_MAX)
0f87b1dd
PM		 124 tab = rtnl_msg_handlers[protocol];
125 else
126 tab = NULL;
127
51057f2f 128 if (tab == NULL || tab[msgindex].doit == NULL)
e2849863
TG		 129 tab = rtnl_msg_handlers[PF_UNSPEC];
130
c80bbeae 131 return tab[msgindex].doit;
e2849863
TG		 132}
133
134static rtnl_dumpit_func rtnl_get_dumpit(int protocol, int msgindex)
135{
136 struct rtnl_link *tab;
137
25239cee 138 if (protocol <= RTNL_FAMILY_MAX)
0f87b1dd
PM		 139 tab = rtnl_msg_handlers[protocol];
140 else
141 tab = NULL;
142
51057f2f 143 if (tab == NULL || tab[msgindex].dumpit == NULL)
e2849863
TG		 144 tab = rtnl_msg_handlers[PF_UNSPEC];
145
c80bbeae 146 return tab[msgindex].dumpit;
e2849863
TG		 147}
148
c7ac8679
GR		 149static rtnl_calcit_func rtnl_get_calcit(int protocol, int msgindex)
150{
151 struct rtnl_link *tab;
152
153 if (protocol <= RTNL_FAMILY_MAX)
154 tab = rtnl_msg_handlers[protocol];
155 else
156 tab = NULL;
157
158 if (tab == NULL || tab[msgindex].calcit == NULL)
159 tab = rtnl_msg_handlers[PF_UNSPEC];
160
c80bbeae 161 return tab[msgindex].calcit;
c7ac8679
GR		 162}
163
e2849863
TG		 164/**
165 * __rtnl_register - Register a rtnetlink message type
166 * @protocol: Protocol family or PF_UNSPEC
167 * @msgtype: rtnetlink message type
168 * @doit: Function pointer called for each request message
169 * @dumpit: Function pointer called for each dump request (NLM_F_DUMP) message
c7ac8679 170 * @calcit: Function pointer to calc size of dump message
e2849863
TG		 171 *
172 * Registers the specified function pointers (at least one of them has
173 * to be non-NULL) to be called whenever a request message for the
174 * specified protocol family and message type is received.
175 *
176 * The special protocol family PF_UNSPEC may be used to define fallback
177 * function pointers for the case when no entry for the specific protocol
178 * family exists.
179 *
180 * Returns 0 on success or a negative error code.
181 */
182int __rtnl_register(int protocol, int msgtype,
c7ac8679
GR		 183 rtnl_doit_func doit, rtnl_dumpit_func dumpit,
184 rtnl_calcit_func calcit)
e2849863
TG		 185{
186 struct rtnl_link *tab;
187 int msgindex;
188
25239cee 189 BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX);
e2849863
TG		 190 msgindex = rtm_msgindex(msgtype);
191
192 tab = rtnl_msg_handlers[protocol];
193 if (tab == NULL) {
194 tab = kcalloc(RTM_NR_MSGTYPES, sizeof(*tab), GFP_KERNEL);
195 if (tab == NULL)
196 return -ENOBUFS;
197
198 rtnl_msg_handlers[protocol] = tab;
199 }
200
201 if (doit)
202 tab[msgindex].doit = doit;
203
204 if (dumpit)
205 tab[msgindex].dumpit = dumpit;
206
c7ac8679
GR		 207 if (calcit)
208 tab[msgindex].calcit = calcit;
209
e2849863
TG		 210 return 0;
211}
e2849863
TG		 212EXPORT_SYMBOL_GPL(__rtnl_register);
213
214/**
215 * rtnl_register - Register a rtnetlink message type
216 *
217 * Identical to __rtnl_register() but panics on failure. This is useful
218 * as failure of this function is very unlikely, it can only happen due
219 * to lack of memory when allocating the chain to store all message
220 * handlers for a protocol. Meant for use in init functions where lack
25985edc 221 * of memory implies no sense in continuing.
e2849863
TG		 222 */
223void rtnl_register(int protocol, int msgtype,
c7ac8679
GR		 224 rtnl_doit_func doit, rtnl_dumpit_func dumpit,
225 rtnl_calcit_func calcit)
e2849863 226{
c7ac8679 227 if (__rtnl_register(protocol, msgtype, doit, dumpit, calcit) < 0)
e2849863
TG		 228 panic("Unable to register rtnetlink message handler, "
229 "protocol = %d, message type = %d\n",
230 protocol, msgtype);
231}
e2849863
TG		 232EXPORT_SYMBOL_GPL(rtnl_register);
233
234/**
235 * rtnl_unregister - Unregister a rtnetlink message type
236 * @protocol: Protocol family or PF_UNSPEC
237 * @msgtype: rtnetlink message type
238 *
239 * Returns 0 on success or a negative error code.
240 */
241int rtnl_unregister(int protocol, int msgtype)
242{
243 int msgindex;
244
25239cee 245 BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX);
e2849863
TG		 246 msgindex = rtm_msgindex(msgtype);
247
248 if (rtnl_msg_handlers[protocol] == NULL)
249 return -ENOENT;
250
251 rtnl_msg_handlers[protocol][msgindex].doit = NULL;
252 rtnl_msg_handlers[protocol][msgindex].dumpit = NULL;
253
254 return 0;
255}
e2849863
TG		 256EXPORT_SYMBOL_GPL(rtnl_unregister);
257
258/**
259 * rtnl_unregister_all - Unregister all rtnetlink message type of a protocol
260 * @protocol : Protocol family or PF_UNSPEC
261 *
262 * Identical to calling rtnl_unregster() for all registered message types
263 * of a certain protocol family.
264 */
265void rtnl_unregister_all(int protocol)
266{
25239cee 267 BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX);
e2849863
TG		 268
269 kfree(rtnl_msg_handlers[protocol]);
270 rtnl_msg_handlers[protocol] = NULL;
271}
e2849863 272EXPORT_SYMBOL_GPL(rtnl_unregister_all);
1da177e4 273
38f7b870
PM		 274static LIST_HEAD(link_ops);
275
c63044f0
ED		 276static const struct rtnl_link_ops *rtnl_link_ops_get(const char *kind)
277{
278 const struct rtnl_link_ops *ops;
279
280 list_for_each_entry(ops, &link_ops, list) {
281 if (!strcmp(ops->kind, kind))
282 return ops;
283 }
284 return NULL;
285}
286
38f7b870
PM		 287/**
288 * __rtnl_link_register - Register rtnl_link_ops with rtnetlink.
289 * @ops: struct rtnl_link_ops * to register
290 *
291 * The caller must hold the rtnl_mutex. This function should be used
292 * by drivers that create devices during module initialization. It
293 * must be called before registering the devices.
294 *
295 * Returns 0 on success or a negative error code.
296 */
297int __rtnl_link_register(struct rtnl_link_ops *ops)
298{
c63044f0
ED		 299 if (rtnl_link_ops_get(ops->kind))
300 return -EEXIST;
301
2d85cba2 302 if (!ops->dellink)
23289a37 303 ops->dellink = unregister_netdevice_queue;
2d85cba2 304
38f7b870
PM		 305 list_add_tail(&ops->list, &link_ops);
306 return 0;
307}
38f7b870
PM		 308EXPORT_SYMBOL_GPL(__rtnl_link_register);
309
310/**
311 * rtnl_link_register - Register rtnl_link_ops with rtnetlink.
312 * @ops: struct rtnl_link_ops * to register
313 *
314 * Returns 0 on success or a negative error code.
315 */
316int rtnl_link_register(struct rtnl_link_ops *ops)
317{
318 int err;
319
320 rtnl_lock();
321 err = __rtnl_link_register(ops);
322 rtnl_unlock();
323 return err;
324}
38f7b870
PM		 325EXPORT_SYMBOL_GPL(rtnl_link_register);
326
669f87ba
PE		 327static void __rtnl_kill_links(struct net *net, struct rtnl_link_ops *ops)
328{
329 struct net_device *dev;
23289a37
ED		 330 LIST_HEAD(list_kill);
331
669f87ba 332 for_each_netdev(net, dev) {
23289a37
ED		 333 if (dev->rtnl_link_ops == ops)
334 ops->dellink(dev, &list_kill);
669f87ba 335 }
23289a37 336 unregister_netdevice_many(&list_kill);
669f87ba
PE		 337}
338
38f7b870
PM		 339/**
340 * __rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink.
341 * @ops: struct rtnl_link_ops * to unregister
342 *
2d85cba2 343 * The caller must hold the rtnl_mutex.
38f7b870
PM		 344 */
345void __rtnl_link_unregister(struct rtnl_link_ops *ops)
346{
881d966b 347 struct net *net;
2d85cba2 348
881d966b 349 for_each_net(net) {
669f87ba 350 __rtnl_kill_links(net, ops);
2d85cba2 351 }
38f7b870
PM		 352 list_del(&ops->list);
353}
38f7b870
PM		 354EXPORT_SYMBOL_GPL(__rtnl_link_unregister);
355
356/**
357 * rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink.
358 * @ops: struct rtnl_link_ops * to unregister
359 */
360void rtnl_link_unregister(struct rtnl_link_ops *ops)
361{
362 rtnl_lock();
363 __rtnl_link_unregister(ops);
364 rtnl_unlock();
365}
38f7b870
PM		 366EXPORT_SYMBOL_GPL(rtnl_link_unregister);
367
38f7b870
PM		 368static size_t rtnl_link_get_size(const struct net_device *dev)
369{
370 const struct rtnl_link_ops *ops = dev->rtnl_link_ops;
371 size_t size;
372
373 if (!ops)
374 return 0;
375
369cf77a
TG		 376 size = nla_total_size(sizeof(struct nlattr)) + /* IFLA_LINKINFO */
377 nla_total_size(strlen(ops->kind) + 1); /* IFLA_INFO_KIND */
38f7b870
PM		 378
379 if (ops->get_size)
380 /* IFLA_INFO_DATA + nested data */
369cf77a 381 size += nla_total_size(sizeof(struct nlattr)) +
38f7b870
PM		 382 ops->get_size(dev);
383
384 if (ops->get_xstats_size)
369cf77a
TG		 385 /* IFLA_INFO_XSTATS */
386 size += nla_total_size(ops->get_xstats_size(dev));
38f7b870
PM		 387
388 return size;
389}
390
f8ff182c
TG		 391static LIST_HEAD(rtnl_af_ops);
392
393static const struct rtnl_af_ops *rtnl_af_lookup(const int family)
394{
395 const struct rtnl_af_ops *ops;
396
397 list_for_each_entry(ops, &rtnl_af_ops, list) {
398 if (ops->family == family)
399 return ops;
400 }
401
402 return NULL;
403}
404
405/**
406 * __rtnl_af_register - Register rtnl_af_ops with rtnetlink.
407 * @ops: struct rtnl_af_ops * to register
408 *
409 * The caller must hold the rtnl_mutex.
410 *
411 * Returns 0 on success or a negative error code.
412 */
413int __rtnl_af_register(struct rtnl_af_ops *ops)
414{
415 list_add_tail(&ops->list, &rtnl_af_ops);
416 return 0;
417}
418EXPORT_SYMBOL_GPL(__rtnl_af_register);
419
420/**
421 * rtnl_af_register - Register rtnl_af_ops with rtnetlink.
422 * @ops: struct rtnl_af_ops * to register
423 *
424 * Returns 0 on success or a negative error code.
425 */
426int rtnl_af_register(struct rtnl_af_ops *ops)
427{
428 int err;
429
430 rtnl_lock();
431 err = __rtnl_af_register(ops);
432 rtnl_unlock();
433 return err;
434}
435EXPORT_SYMBOL_GPL(rtnl_af_register);
436
437/**
438 * __rtnl_af_unregister - Unregister rtnl_af_ops from rtnetlink.
439 * @ops: struct rtnl_af_ops * to unregister
440 *
441 * The caller must hold the rtnl_mutex.
442 */
443void __rtnl_af_unregister(struct rtnl_af_ops *ops)
444{
445 list_del(&ops->list);
446}
447EXPORT_SYMBOL_GPL(__rtnl_af_unregister);
448
449/**
450 * rtnl_af_unregister - Unregister rtnl_af_ops from rtnetlink.
451 * @ops: struct rtnl_af_ops * to unregister
452 */
453void rtnl_af_unregister(struct rtnl_af_ops *ops)
454{
455 rtnl_lock();
456 __rtnl_af_unregister(ops);
457 rtnl_unlock();
458}
459EXPORT_SYMBOL_GPL(rtnl_af_unregister);
460
461static size_t rtnl_link_get_af_size(const struct net_device *dev)
462{
463 struct rtnl_af_ops *af_ops;
464 size_t size;
465
466 /* IFLA_AF_SPEC */
467 size = nla_total_size(sizeof(struct nlattr));
468
469 list_for_each_entry(af_ops, &rtnl_af_ops, list) {
470 if (af_ops->get_link_af_size) {
471 /* AF_* + nested data */
472 size += nla_total_size(sizeof(struct nlattr)) +
473 af_ops->get_link_af_size(dev);
474 }
475 }
476
477 return size;
478}
479
38f7b870
PM		 480static int rtnl_link_fill(struct sk_buff *skb, const struct net_device *dev)
481{
482 const struct rtnl_link_ops *ops = dev->rtnl_link_ops;
483 struct nlattr *linkinfo, *data;
484 int err = -EMSGSIZE;
485
486 linkinfo = nla_nest_start(skb, IFLA_LINKINFO);
487 if (linkinfo == NULL)
488 goto out;
489
490 if (nla_put_string(skb, IFLA_INFO_KIND, ops->kind) < 0)
491 goto err_cancel_link;
492 if (ops->fill_xstats) {
493 err = ops->fill_xstats(skb, dev);
494 if (err < 0)
495 goto err_cancel_link;
496 }
497 if (ops->fill_info) {
498 data = nla_nest_start(skb, IFLA_INFO_DATA);
fcca143d
WY		 499 if (data == NULL) {
500 err = -EMSGSIZE;
38f7b870 501 goto err_cancel_link;
fcca143d 502 }
38f7b870
PM		 503 err = ops->fill_info(skb, dev);
504 if (err < 0)
505 goto err_cancel_data;
506 nla_nest_end(skb, data);
507 }
508
509 nla_nest_end(skb, linkinfo);
510 return 0;
511
512err_cancel_data:
513 nla_nest_cancel(skb, data);
514err_cancel_link:
515 nla_nest_cancel(skb, linkinfo);
516out:
517 return err;
518}
519
95c96174 520int rtnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, unsigned int group, int echo)
1da177e4 521{
97c53cac 522 struct sock *rtnl = net->rtnl;
1da177e4
LT		 523 int err = 0;
524
ac6d439d 525 NETLINK_CB(skb).dst_group = group;
1da177e4
LT		 526 if (echo)
527 atomic_inc(&skb->users);
528 netlink_broadcast(rtnl, skb, pid, group, GFP_KERNEL);
529 if (echo)
530 err = netlink_unicast(rtnl, skb, pid, MSG_DONTWAIT);
531 return err;
532}
533
97c53cac 534int rtnl_unicast(struct sk_buff *skb, struct net *net, u32 pid)
2942e900 535{
97c53cac
DL		 536 struct sock *rtnl = net->rtnl;
537
2942e900
TG		 538 return nlmsg_unicast(rtnl, skb, pid);
539}
e0d087af 540EXPORT_SYMBOL(rtnl_unicast);
2942e900 541
1ce85fe4
PNA		 542void rtnl_notify(struct sk_buff *skb, struct net *net, u32 pid, u32 group,
543 struct nlmsghdr *nlh, gfp_t flags)
97676b6b 544{
97c53cac 545 struct sock *rtnl = net->rtnl;
97676b6b
TG		 546 int report = 0;
547
548 if (nlh)
549 report = nlmsg_report(nlh);
550
1ce85fe4 551 nlmsg_notify(rtnl, skb, pid, group, report, flags);
97676b6b 552}
e0d087af 553EXPORT_SYMBOL(rtnl_notify);
97676b6b 554
97c53cac 555void rtnl_set_sk_err(struct net *net, u32 group, int error)
97676b6b 556{
97c53cac
DL		 557 struct sock *rtnl = net->rtnl;
558
97676b6b
TG		 559 netlink_set_err(rtnl, 0, group, error);
560}
e0d087af 561EXPORT_SYMBOL(rtnl_set_sk_err);
97676b6b 562
1da177e4
LT		 563int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics)
564{
2d7202bf
TG		 565 struct nlattr *mx;
566 int i, valid = 0;
567
568 mx = nla_nest_start(skb, RTA_METRICS);
569 if (mx == NULL)
570 return -ENOBUFS;
571
572 for (i = 0; i < RTAX_MAX; i++) {
573 if (metrics[i]) {
574 valid++;
a6574349
DM		 575 if (nla_put_u32(skb, i+1, metrics[i]))
576 goto nla_put_failure;
2d7202bf 577 }
1da177e4 578 }
1da177e4 579
a57d27fc
DM		 580 if (!valid) {
581 nla_nest_cancel(skb, mx);
582 return 0;
583 }
2d7202bf
TG		 584
585 return nla_nest_end(skb, mx);
586
587nla_put_failure:
bc3ed28c
TG		 588 nla_nest_cancel(skb, mx);
589 return -EMSGSIZE;
1da177e4 590}
e0d087af 591EXPORT_SYMBOL(rtnetlink_put_metrics);
1da177e4 592
e3703b3d 593int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst, u32 id,
87a50699 594 long expires, u32 error)
e3703b3d
TG		 595{
596 struct rta_cacheinfo ci = {
a399a805 597 .rta_lastuse = jiffies_delta_to_clock_t(jiffies - dst->lastuse),
e3703b3d
TG		 598 .rta_used = dst->__use,
599 .rta_clntref = atomic_read(&(dst->__refcnt)),
600 .rta_error = error,
601 .rta_id = id,
e3703b3d
TG		 602 };
603
8253947e
LW		 604 if (expires) {
605 unsigned long clock;
e3703b3d 606
8253947e
LW		 607 clock = jiffies_to_clock_t(abs(expires));
608 clock = min_t(unsigned long, clock, INT_MAX);
609 ci.rta_expires = (expires > 0) ? clock : -clock;
610 }
e3703b3d
TG		 611 return nla_put(skb, RTA_CACHEINFO, sizeof(ci), &ci);
612}
e3703b3d 613EXPORT_SYMBOL_GPL(rtnl_put_cacheinfo);
1da177e4 614
93b2d4a2 615static void set_operstate(struct net_device *dev, unsigned char transition)
b00055aa
SR		 616{
617 unsigned char operstate = dev->operstate;
618
e0d087af 619 switch (transition) {
b00055aa
SR		 620 case IF_OPER_UP:
621 if ((operstate == IF_OPER_DORMANT ||
622 operstate == IF_OPER_UNKNOWN) &&
623 !netif_dormant(dev))
624 operstate = IF_OPER_UP;
625 break;
626
627 case IF_OPER_DORMANT:
628 if (operstate == IF_OPER_UP ||
629 operstate == IF_OPER_UNKNOWN)
630 operstate = IF_OPER_DORMANT;
631 break;
3ff50b79 632 }
b00055aa
SR		 633
634 if (dev->operstate != operstate) {
635 write_lock_bh(&dev_base_lock);
636 dev->operstate = operstate;
637 write_unlock_bh(&dev_base_lock);
93b2d4a2
DM		 638 netdev_state_change(dev);
639 }
b00055aa
SR		 640}
641
b1beb681
JB		 642static unsigned int rtnl_dev_get_flags(const struct net_device *dev)
643{
644 return (dev->flags & ~(IFF_PROMISC | IFF_ALLMULTI)) |
645 (dev->gflags & (IFF_PROMISC | IFF_ALLMULTI));
646}
647
3729d502
PM		 648static unsigned int rtnl_dev_combine_flags(const struct net_device *dev,
649 const struct ifinfomsg *ifm)
650{
651 unsigned int flags = ifm->ifi_flags;
652
653 /* bugwards compatibility: ifi_change == 0 is treated as ~0 */
654 if (ifm->ifi_change)
655 flags = (flags & ifm->ifi_change) |
b1beb681 656 (rtnl_dev_get_flags(dev) & ~ifm->ifi_change);
3729d502
PM		 657
658 return flags;
659}
660
b60c5115 661static void copy_rtnl_link_stats(struct rtnl_link_stats *a,
be1f3c2c 662 const struct rtnl_link_stats64 *b)
1da177e4 663{
b60c5115
TG		 664 a->rx_packets = b->rx_packets;
665 a->tx_packets = b->tx_packets;
666 a->rx_bytes = b->rx_bytes;
667 a->tx_bytes = b->tx_bytes;
668 a->rx_errors = b->rx_errors;
669 a->tx_errors = b->tx_errors;
670 a->rx_dropped = b->rx_dropped;
671 a->tx_dropped = b->tx_dropped;
672
673 a->multicast = b->multicast;
674 a->collisions = b->collisions;
675
676 a->rx_length_errors = b->rx_length_errors;
677 a->rx_over_errors = b->rx_over_errors;
678 a->rx_crc_errors = b->rx_crc_errors;
679 a->rx_frame_errors = b->rx_frame_errors;
680 a->rx_fifo_errors = b->rx_fifo_errors;
681 a->rx_missed_errors = b->rx_missed_errors;
682
683 a->tx_aborted_errors = b->tx_aborted_errors;
684 a->tx_carrier_errors = b->tx_carrier_errors;
685 a->tx_fifo_errors = b->tx_fifo_errors;
686 a->tx_heartbeat_errors = b->tx_heartbeat_errors;
687 a->tx_window_errors = b->tx_window_errors;
688
689 a->rx_compressed = b->rx_compressed;
690 a->tx_compressed = b->tx_compressed;
10708f37
JE		 691}
692
be1f3c2c 693static void copy_rtnl_link_stats64(void *v, const struct rtnl_link_stats64 *b)
10708f37 694{
afdcba37 695 memcpy(v, b, sizeof(*b));
10708f37 696}
1da177e4 697
c02db8c6 698/* All VF info */
115c9b81
GR		 699static inline int rtnl_vfinfo_size(const struct net_device *dev,
700 u32 ext_filter_mask)
ebc08a6f 701{
115c9b81
GR		 702 if (dev->dev.parent && dev_is_pci(dev->dev.parent) &&
703 (ext_filter_mask & RTEXT_FILTER_VF)) {
c02db8c6 704 int num_vfs = dev_num_vf(dev->dev.parent);
045de01a
SF		 705 size_t size = nla_total_size(sizeof(struct nlattr));
706 size += nla_total_size(num_vfs * sizeof(struct nlattr));
707 size += num_vfs *
708 (nla_total_size(sizeof(struct ifla_vf_mac)) +
709 nla_total_size(sizeof(struct ifla_vf_vlan)) +
5f8444a3
GR		 710 nla_total_size(sizeof(struct ifla_vf_tx_rate)) +
711 nla_total_size(sizeof(struct ifla_vf_spoofchk)));
c02db8c6
CW		 712 return size;
713 } else
ebc08a6f
WM		 714 return 0;
715}
716
fd9fcd8a
DG		 717static size_t rtnl_port_size(const struct net_device *dev,
718 u32 ext_filter_mask)
57b61080
SF		 719{
720 size_t port_size = nla_total_size(4) /* PORT_VF */
721 + nla_total_size(PORT_PROFILE_MAX) /* PORT_PROFILE */
722 + nla_total_size(sizeof(struct ifla_port_vsi))
723 /* PORT_VSI_TYPE */
724 + nla_total_size(PORT_UUID_MAX) /* PORT_INSTANCE_UUID */
725 + nla_total_size(PORT_UUID_MAX) /* PORT_HOST_UUID */
726 + nla_total_size(1) /* PROT_VDP_REQUEST */
727 + nla_total_size(2); /* PORT_VDP_RESPONSE */
728 size_t vf_ports_size = nla_total_size(sizeof(struct nlattr));
729 size_t vf_port_size = nla_total_size(sizeof(struct nlattr))
730 + port_size;
731 size_t port_self_size = nla_total_size(sizeof(struct nlattr))
732 + port_size;
733
fd9fcd8a
DG		 734 if (!dev->netdev_ops->ndo_get_vf_port || !dev->dev.parent ||
735 !(ext_filter_mask & RTEXT_FILTER_VF))
57b61080
SF		 736 return 0;
737 if (dev_num_vf(dev->dev.parent))
738 return port_self_size + vf_ports_size +
739 vf_port_size * dev_num_vf(dev->dev.parent);
740 else
741 return port_self_size;
742}
743
115c9b81
GR		 744static noinline size_t if_nlmsg_size(const struct net_device *dev,
745 u32 ext_filter_mask)
339bf98f
TG		 746{
747 return NLMSG_ALIGN(sizeof(struct ifinfomsg))
748 + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */
0b815a1a 749 + nla_total_size(IFALIASZ) /* IFLA_IFALIAS */
339bf98f
TG		 750 + nla_total_size(IFNAMSIZ) /* IFLA_QDISC */
751 + nla_total_size(sizeof(struct rtnl_link_ifmap))
752 + nla_total_size(sizeof(struct rtnl_link_stats))
adcfe196 753 + nla_total_size(sizeof(struct rtnl_link_stats64))
339bf98f
TG		 754 + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */
755 + nla_total_size(MAX_ADDR_LEN) /* IFLA_BROADCAST */
756 + nla_total_size(4) /* IFLA_TXQLEN */
757 + nla_total_size(4) /* IFLA_WEIGHT */
758 + nla_total_size(4) /* IFLA_MTU */
759 + nla_total_size(4) /* IFLA_LINK */
760 + nla_total_size(4) /* IFLA_MASTER */
9a57247f 761 + nla_total_size(1) /* IFLA_CARRIER */
edbc0bb3 762 + nla_total_size(4) /* IFLA_PROMISCUITY */
76ff5cc9
JP		 763 + nla_total_size(4) /* IFLA_NUM_TX_QUEUES */
764 + nla_total_size(4) /* IFLA_NUM_RX_QUEUES */
339bf98f 765 + nla_total_size(1) /* IFLA_OPERSTATE */
38f7b870 766 + nla_total_size(1) /* IFLA_LINKMODE */
115c9b81
GR		 767 + nla_total_size(ext_filter_mask
768 & RTEXT_FILTER_VF ? 4 : 0) /* IFLA_NUM_VF */
769 + rtnl_vfinfo_size(dev, ext_filter_mask) /* IFLA_VFINFO_LIST */
fd9fcd8a 770 + rtnl_port_size(dev, ext_filter_mask) /* IFLA_VF_PORTS + IFLA_PORT_SELF */
f8ff182c
TG		 771 + rtnl_link_get_size(dev) /* IFLA_LINKINFO */
772 + rtnl_link_get_af_size(dev); /* IFLA_AF_SPEC */
339bf98f
TG		 773}
774
57b61080
SF		 775static int rtnl_vf_ports_fill(struct sk_buff *skb, struct net_device *dev)
776{
777 struct nlattr *vf_ports;
778 struct nlattr *vf_port;
779 int vf;
780 int err;
781
782 vf_ports = nla_nest_start(skb, IFLA_VF_PORTS);
783 if (!vf_ports)
784 return -EMSGSIZE;
785
786 for (vf = 0; vf < dev_num_vf(dev->dev.parent); vf++) {
787 vf_port = nla_nest_start(skb, IFLA_VF_PORT);
8ca94183
SF		 788 if (!vf_port)
789 goto nla_put_failure;
a6574349
DM		 790 if (nla_put_u32(skb, IFLA_PORT_VF, vf))
791 goto nla_put_failure;
57b61080 792 err = dev->netdev_ops->ndo_get_vf_port(dev, vf, skb);
8ca94183
SF		 793 if (err == -EMSGSIZE)
794 goto nla_put_failure;
57b61080 795 if (err) {
57b61080
SF		 796 nla_nest_cancel(skb, vf_port);
797 continue;
798 }
799 nla_nest_end(skb, vf_port);
800 }
801
802 nla_nest_end(skb, vf_ports);
803
804 return 0;
8ca94183
SF		 805
806nla_put_failure:
807 nla_nest_cancel(skb, vf_ports);
808 return -EMSGSIZE;
57b61080
SF		 809}
810
811static int rtnl_port_self_fill(struct sk_buff *skb, struct net_device *dev)
812{
813 struct nlattr *port_self;
814 int err;
815
816 port_self = nla_nest_start(skb, IFLA_PORT_SELF);
817 if (!port_self)
818 return -EMSGSIZE;
819
820 err = dev->netdev_ops->ndo_get_vf_port(dev, PORT_SELF_VF, skb);
821 if (err) {
822 nla_nest_cancel(skb, port_self);
8ca94183 823 return (err == -EMSGSIZE) ? err : 0;
57b61080
SF		 824 }
825
826 nla_nest_end(skb, port_self);
827
828 return 0;
829}
830
fd9fcd8a
DG		 831static int rtnl_port_fill(struct sk_buff *skb, struct net_device *dev,
832 u32 ext_filter_mask)
57b61080
SF		 833{
834 int err;
835
fd9fcd8a
DG		 836 if (!dev->netdev_ops->ndo_get_vf_port || !dev->dev.parent ||
837 !(ext_filter_mask & RTEXT_FILTER_VF))
57b61080
SF		 838 return 0;
839
840 err = rtnl_port_self_fill(skb, dev);
841 if (err)
842 return err;
843
844 if (dev_num_vf(dev->dev.parent)) {
845 err = rtnl_vf_ports_fill(skb, dev);
846 if (err)
847 return err;
848 }
849
850 return 0;
851}
852
b60c5115 853static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev,
575c3e2a 854 int type, u32 pid, u32 seq, u32 change,
115c9b81 855 unsigned int flags, u32 ext_filter_mask)
b60c5115
TG		 856{
857 struct ifinfomsg *ifm;
858 struct nlmsghdr *nlh;
28172739 859 struct rtnl_link_stats64 temp;
be1f3c2c 860 const struct rtnl_link_stats64 *stats;
f8ff182c
TG		 861 struct nlattr *attr, *af_spec;
862 struct rtnl_af_ops *af_ops;
898e5061 863 struct net_device *upper_dev = netdev_master_upper_dev_get(dev);
1da177e4 864
2907c35f 865 ASSERT_RTNL();
b60c5115
TG		 866 nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ifm), flags);
867 if (nlh == NULL)
26932566 868 return -EMSGSIZE;
1da177e4 869
b60c5115
TG		 870 ifm = nlmsg_data(nlh);
871 ifm->ifi_family = AF_UNSPEC;
872 ifm->__ifi_pad = 0;
873 ifm->ifi_type = dev->type;
874 ifm->ifi_index = dev->ifindex;
875 ifm->ifi_flags = dev_get_flags(dev);
876 ifm->ifi_change = change;
877
a6574349
DM		 878 if (nla_put_string(skb, IFLA_IFNAME, dev->name) ||
879 nla_put_u32(skb, IFLA_TXQLEN, dev->tx_queue_len) ||
880 nla_put_u8(skb, IFLA_OPERSTATE,
881 netif_running(dev) ? dev->operstate : IF_OPER_DOWN) ||
882 nla_put_u8(skb, IFLA_LINKMODE, dev->link_mode) ||
883 nla_put_u32(skb, IFLA_MTU, dev->mtu) ||
884 nla_put_u32(skb, IFLA_GROUP, dev->group) ||
edbc0bb3 885 nla_put_u32(skb, IFLA_PROMISCUITY, dev->promiscuity) ||
76ff5cc9 886 nla_put_u32(skb, IFLA_NUM_TX_QUEUES, dev->num_tx_queues) ||
1d69c2b3 887#ifdef CONFIG_RPS
76ff5cc9 888 nla_put_u32(skb, IFLA_NUM_RX_QUEUES, dev->num_rx_queues) ||
1d69c2b3 889#endif
a6574349
DM		 890 (dev->ifindex != dev->iflink &&
891 nla_put_u32(skb, IFLA_LINK, dev->iflink)) ||
898e5061
JP		 892 (upper_dev &&
893 nla_put_u32(skb, IFLA_MASTER, upper_dev->ifindex)) ||
9a57247f 894 nla_put_u8(skb, IFLA_CARRIER, netif_carrier_ok(dev)) ||
a6574349
DM		 895 (dev->qdisc &&
896 nla_put_string(skb, IFLA_QDISC, dev->qdisc->ops->id)) ||
897 (dev->ifalias &&
898 nla_put_string(skb, IFLA_IFALIAS, dev->ifalias)))
899 goto nla_put_failure;
0b815a1a 900
1da177e4 901 if (1) {
f9d69142
KL		 902 struct rtnl_link_ifmap map;
903
904 memset(&map, 0, sizeof(map));
905 map.mem_start = dev->mem_start;
906 map.mem_end = dev->mem_end;
907 map.base_addr = dev->base_addr;
908 map.irq = dev->irq;
909 map.dma = dev->dma;
910 map.port = dev->if_port;
911
a6574349
DM		 912 if (nla_put(skb, IFLA_MAP, sizeof(map), &map))
913 goto nla_put_failure;
1da177e4
LT		 914 }
915
916 if (dev->addr_len) {
a6574349
DM		 917 if (nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr) ||
918 nla_put(skb, IFLA_BROADCAST, dev->addr_len, dev->broadcast))
919 goto nla_put_failure;
1da177e4
LT		 920 }
921
96e74088
PE		 922 attr = nla_reserve(skb, IFLA_STATS,
923 sizeof(struct rtnl_link_stats));
924 if (attr == NULL)
925 goto nla_put_failure;
b60c5115 926
28172739 927 stats = dev_get_stats(dev, &temp);
96e74088 928 copy_rtnl_link_stats(nla_data(attr), stats);
1da177e4 929
10708f37
JE		 930 attr = nla_reserve(skb, IFLA_STATS64,
931 sizeof(struct rtnl_link_stats64));
932 if (attr == NULL)
933 goto nla_put_failure;
10708f37
JE		 934 copy_rtnl_link_stats64(nla_data(attr), stats);
935
a6574349
DM		 936 if (dev->dev.parent && (ext_filter_mask & RTEXT_FILTER_VF) &&
937 nla_put_u32(skb, IFLA_NUM_VF, dev_num_vf(dev->dev.parent)))
938 goto nla_put_failure;
57b61080 939
115c9b81
GR		 940 if (dev->netdev_ops->ndo_get_vf_config && dev->dev.parent
941 && (ext_filter_mask & RTEXT_FILTER_VF)) {
ebc08a6f 942 int i;
ebc08a6f 943
c02db8c6
CW		 944 struct nlattr *vfinfo, *vf;
945 int num_vfs = dev_num_vf(dev->dev.parent);
946
c02db8c6
CW		 947 vfinfo = nla_nest_start(skb, IFLA_VFINFO_LIST);
948 if (!vfinfo)
949 goto nla_put_failure;
950 for (i = 0; i < num_vfs; i++) {
951 struct ifla_vf_info ivi;
952 struct ifla_vf_mac vf_mac;
953 struct ifla_vf_vlan vf_vlan;
954 struct ifla_vf_tx_rate vf_tx_rate;
5f8444a3
GR		 955 struct ifla_vf_spoofchk vf_spoofchk;
956
957 /*
958 * Not all SR-IOV capable drivers support the
959 * spoofcheck query. Preset to -1 so the user
960 * space tool can detect that the driver didn't
961 * report anything.
962 */
963 ivi.spoofchk = -1;
84d73cd3 964 memset(ivi.mac, 0, sizeof(ivi.mac));
ebc08a6f
WM		 965 if (dev->netdev_ops->ndo_get_vf_config(dev, i, &ivi))
966 break;
5f8444a3
GR		 967 vf_mac.vf =
968 vf_vlan.vf =
969 vf_tx_rate.vf =
970 vf_spoofchk.vf = ivi.vf;
971
c02db8c6
CW		 972 memcpy(vf_mac.mac, ivi.mac, sizeof(ivi.mac));
973 vf_vlan.vlan = ivi.vlan;
974 vf_vlan.qos = ivi.qos;
975 vf_tx_rate.rate = ivi.tx_rate;
5f8444a3 976 vf_spoofchk.setting = ivi.spoofchk;
c02db8c6
CW		 977 vf = nla_nest_start(skb, IFLA_VF_INFO);
978 if (!vf) {
979 nla_nest_cancel(skb, vfinfo);
980 goto nla_put_failure;
981 }
a6574349
DM		 982 if (nla_put(skb, IFLA_VF_MAC, sizeof(vf_mac), &vf_mac) ||
983 nla_put(skb, IFLA_VF_VLAN, sizeof(vf_vlan), &vf_vlan) ||
984 nla_put(skb, IFLA_VF_TX_RATE, sizeof(vf_tx_rate),
985 &vf_tx_rate) ||
986 nla_put(skb, IFLA_VF_SPOOFCHK, sizeof(vf_spoofchk),
987 &vf_spoofchk))
988 goto nla_put_failure;
c02db8c6 989 nla_nest_end(skb, vf);
ebc08a6f 990 }
c02db8c6 991 nla_nest_end(skb, vfinfo);
ebc08a6f 992 }
57b61080 993
fd9fcd8a 994 if (rtnl_port_fill(skb, dev, ext_filter_mask))
57b61080
SF		 995 goto nla_put_failure;
996
38f7b870
PM		 997 if (dev->rtnl_link_ops) {
998 if (rtnl_link_fill(skb, dev) < 0)
999 goto nla_put_failure;
1000 }
1001
f8ff182c
TG		 1002 if (!(af_spec = nla_nest_start(skb, IFLA_AF_SPEC)))
1003 goto nla_put_failure;
1004
1005 list_for_each_entry(af_ops, &rtnl_af_ops, list) {
1006 if (af_ops->fill_link_af) {
1007 struct nlattr *af;
1008 int err;
1009
1010 if (!(af = nla_nest_start(skb, af_ops->family)))
1011 goto nla_put_failure;
1012
1013 err = af_ops->fill_link_af(skb, dev);
1014
1015 /*
1016 * Caller may return ENODATA to indicate that there
1017 * was no data to be dumped. This is not an error, it
1018 * means we should trim the attribute header and
1019 * continue.
1020 */
1021 if (err == -ENODATA)
1022 nla_nest_cancel(skb, af);
1023 else if (err < 0)
1024 goto nla_put_failure;
1025
1026 nla_nest_end(skb, af);
1027 }
1028 }
1029
1030 nla_nest_end(skb, af_spec);
1031
b60c5115
TG		 1032 return nlmsg_end(skb, nlh);
1033
1034nla_put_failure:
26932566
PM		 1035 nlmsg_cancel(skb, nlh);
1036 return -EMSGSIZE;
1da177e4
LT		 1037}
1038
b60c5115 1039static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb)
1da177e4 1040{
3b1e0a65 1041 struct net *net = sock_net(skb->sk);
7c28bd0b
ED		 1042 int h, s_h;
1043 int idx = 0, s_idx;
1da177e4 1044 struct net_device *dev;
7c28bd0b 1045 struct hlist_head *head;
115c9b81
GR		 1046 struct nlattr *tb[IFLA_MAX+1];
1047 u32 ext_filter_mask = 0;
1ab27dd7 1048 int err;
fb0d10bf 1049 int hdrlen;
7c28bd0b
ED		 1050
1051 s_h = cb->args[0];
1052 s_idx = cb->args[1];
1053
e67f88dd 1054 rcu_read_lock();
4e985ada
TG		 1055 cb->seq = net->dev_base_seq;
1056
fb0d10bf
MS		 1057 /* A hack to preserve kernel<->userspace interface.
1058 * The correct header is ifinfomsg. It is consistent with rtnl_getlink.
1059 * However, before Linux v3.9 the code here assumed rtgenmsg and that's
1060 * what iproute2 < v3.9.0 used.
1061 * We can detect the old iproute2. Even including the IFLA_EXT_MASK
1062 * attribute, its netlink message is shorter than struct ifinfomsg.
1063 */
1064 hdrlen = nlmsg_len(cb->nlh) < sizeof(struct ifinfomsg) ?
1065 sizeof(struct rtgenmsg) : sizeof(struct ifinfomsg);
1066
1067 if (nlmsg_parse(cb->nlh, hdrlen, tb, IFLA_MAX, ifla_policy) >= 0) {
115c9b81 1068
a4b64fbe
ED		 1069 if (tb[IFLA_EXT_MASK])
1070 ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]);
1071 }
115c9b81 1072
7c28bd0b
ED		 1073 for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) {
1074 idx = 0;
1075 head = &net->dev_index_head[h];
b67bfe0d 1076 hlist_for_each_entry_rcu(dev, head, index_hlist) {
7c28bd0b
ED		 1077 if (idx < s_idx)
1078 goto cont;
1ab27dd7
DG		 1079 err = rtnl_fill_ifinfo(skb, dev, RTM_NEWLINK,
1080 NETLINK_CB(cb->skb).portid,
1081 cb->nlh->nlmsg_seq, 0,
1082 NLM_F_MULTI,
1083 ext_filter_mask);
1084 /* If we ran out of room on the first message,
1085 * we're in trouble
1086 */
1087 WARN_ON((err == -EMSGSIZE) && (skb->len == 0));
1088
1089 if (err <= 0)
7c28bd0b 1090 goto out;
4e985ada
TG		 1091
1092 nl_dump_check_consistent(cb, nlmsg_hdr(skb));
7562f876 1093cont:
7c28bd0b
ED		 1094 idx++;
1095 }
1da177e4 1096 }
7c28bd0b 1097out:
e67f88dd 1098 rcu_read_unlock();
7c28bd0b
ED		 1099 cb->args[1] = idx;
1100 cb->args[0] = h;
1da177e4
LT		 1101
1102 return skb->len;
1103}
1104
e7199288 1105const struct nla_policy ifla_policy[IFLA_MAX+1] = {
5176f91e 1106 [IFLA_IFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ-1 },
38f7b870
PM		 1107 [IFLA_ADDRESS] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN },
1108 [IFLA_BROADCAST] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN },
5176f91e 1109 [IFLA_MAP] = { .len = sizeof(struct rtnl_link_ifmap) },
da5e0494 1110 [IFLA_MTU] = { .type = NLA_U32 },
76e87306 1111 [IFLA_LINK] = { .type = NLA_U32 },
fbaec0ea 1112 [IFLA_MASTER] = { .type = NLA_U32 },
9a57247f 1113 [IFLA_CARRIER] = { .type = NLA_U8 },
da5e0494
TG		 1114 [IFLA_TXQLEN] = { .type = NLA_U32 },
1115 [IFLA_WEIGHT] = { .type = NLA_U32 },
1116 [IFLA_OPERSTATE] = { .type = NLA_U8 },
1117 [IFLA_LINKMODE] = { .type = NLA_U8 },
76e87306 1118 [IFLA_LINKINFO] = { .type = NLA_NESTED },
d8a5ec67 1119 [IFLA_NET_NS_PID] = { .type = NLA_U32 },
f0630529 1120 [IFLA_NET_NS_FD] = { .type = NLA_U32 },
0b815a1a 1121 [IFLA_IFALIAS] = { .type = NLA_STRING, .len = IFALIASZ-1 },
c02db8c6 1122 [IFLA_VFINFO_LIST] = {. type = NLA_NESTED },
57b61080
SF		 1123 [IFLA_VF_PORTS] = { .type = NLA_NESTED },
1124 [IFLA_PORT_SELF] = { .type = NLA_NESTED },
f8ff182c 1125 [IFLA_AF_SPEC] = { .type = NLA_NESTED },
115c9b81 1126 [IFLA_EXT_MASK] = { .type = NLA_U32 },
edbc0bb3 1127 [IFLA_PROMISCUITY] = { .type = NLA_U32 },
76ff5cc9
JP		 1128 [IFLA_NUM_TX_QUEUES] = { .type = NLA_U32 },
1129 [IFLA_NUM_RX_QUEUES] = { .type = NLA_U32 },
da5e0494 1130};
e0d087af 1131EXPORT_SYMBOL(ifla_policy);
da5e0494 1132
38f7b870
PM		 1133static const struct nla_policy ifla_info_policy[IFLA_INFO_MAX+1] = {
1134 [IFLA_INFO_KIND] = { .type = NLA_STRING },
1135 [IFLA_INFO_DATA] = { .type = NLA_NESTED },
1136};
1137
c02db8c6
CW		 1138static const struct nla_policy ifla_vfinfo_policy[IFLA_VF_INFO_MAX+1] = {
1139 [IFLA_VF_INFO] = { .type = NLA_NESTED },
1140};
1141
1142static const struct nla_policy ifla_vf_policy[IFLA_VF_MAX+1] = {
1671763b
DB		 1143 [IFLA_VF_MAC] = { .len = sizeof(struct ifla_vf_mac) },
1144 [IFLA_VF_VLAN] = { .len = sizeof(struct ifla_vf_vlan) },
1145 [IFLA_VF_TX_RATE] = { .len = sizeof(struct ifla_vf_tx_rate) },
1146 [IFLA_VF_SPOOFCHK] = { .len = sizeof(struct ifla_vf_spoofchk) },
c02db8c6
CW		 1147};
1148
57b61080
SF		 1149static const struct nla_policy ifla_port_policy[IFLA_PORT_MAX+1] = {
1150 [IFLA_PORT_VF] = { .type = NLA_U32 },
1151 [IFLA_PORT_PROFILE] = { .type = NLA_STRING,
1152 .len = PORT_PROFILE_MAX },
1153 [IFLA_PORT_VSI_TYPE] = { .type = NLA_BINARY,
1154 .len = sizeof(struct ifla_port_vsi)},
1155 [IFLA_PORT_INSTANCE_UUID] = { .type = NLA_BINARY,
1156 .len = PORT_UUID_MAX },
1157 [IFLA_PORT_HOST_UUID] = { .type = NLA_STRING,
1158 .len = PORT_UUID_MAX },
1159 [IFLA_PORT_REQUEST] = { .type = NLA_U8, },
1160 [IFLA_PORT_RESPONSE] = { .type = NLA_U16, },
1161};
1162
81adee47
EB		 1163struct net *rtnl_link_get_net(struct net *src_net, struct nlattr *tb[])
1164{
1165 struct net *net;
1166 /* Examine the link attributes and figure out which
1167 * network namespace we are talking about.
1168 */
1169 if (tb[IFLA_NET_NS_PID])
1170 net = get_net_ns_by_pid(nla_get_u32(tb[IFLA_NET_NS_PID]));
f0630529
EB		 1171 else if (tb[IFLA_NET_NS_FD])
1172 net = get_net_ns_by_fd(nla_get_u32(tb[IFLA_NET_NS_FD]));
81adee47
EB		 1173 else
1174 net = get_net(src_net);
1175 return net;
1176}
1177EXPORT_SYMBOL(rtnl_link_get_net);
1178
1840bb13
TG		 1179static int validate_linkmsg(struct net_device *dev, struct nlattr *tb[])
1180{
1181 if (dev) {
1182 if (tb[IFLA_ADDRESS] &&
1183 nla_len(tb[IFLA_ADDRESS]) < dev->addr_len)
1184 return -EINVAL;
1185
1186 if (tb[IFLA_BROADCAST] &&
1187 nla_len(tb[IFLA_BROADCAST]) < dev->addr_len)
1188 return -EINVAL;
1189 }
1190
cf7afbfe
TG		 1191 if (tb[IFLA_AF_SPEC]) {
1192 struct nlattr *af;
1193 int rem, err;
1194
1195 nla_for_each_nested(af, tb[IFLA_AF_SPEC], rem) {
1196 const struct rtnl_af_ops *af_ops;
1197
1198 if (!(af_ops = rtnl_af_lookup(nla_type(af))))
1199 return -EAFNOSUPPORT;
1200
1201 if (!af_ops->set_link_af)
1202 return -EOPNOTSUPP;
1203
1204 if (af_ops->validate_link_af) {
6d3a9a68 1205 err = af_ops->validate_link_af(dev, af);
cf7afbfe
TG		 1206 if (err < 0)
1207 return err;
1208 }
1209 }
1210 }
1211
1840bb13
TG		 1212 return 0;
1213}
1214
c02db8c6
CW		 1215static int do_setvfinfo(struct net_device *dev, struct nlattr *attr)
1216{
1217 int rem, err = -EINVAL;
1218 struct nlattr *vf;
1219 const struct net_device_ops *ops = dev->netdev_ops;
1220
1221 nla_for_each_nested(vf, attr, rem) {
1222 switch (nla_type(vf)) {
1223 case IFLA_VF_MAC: {
1224 struct ifla_vf_mac *ivm;
1225 ivm = nla_data(vf);
1226 err = -EOPNOTSUPP;
1227 if (ops->ndo_set_vf_mac)
1228 err = ops->ndo_set_vf_mac(dev, ivm->vf,
1229 ivm->mac);
1230 break;
1231 }
1232 case IFLA_VF_VLAN: {
1233 struct ifla_vf_vlan *ivv;
1234 ivv = nla_data(vf);
1235 err = -EOPNOTSUPP;
1236 if (ops->ndo_set_vf_vlan)
1237 err = ops->ndo_set_vf_vlan(dev, ivv->vf,
1238 ivv->vlan,
1239 ivv->qos);
1240 break;
1241 }
1242 case IFLA_VF_TX_RATE: {
1243 struct ifla_vf_tx_rate *ivt;
1244 ivt = nla_data(vf);
1245 err = -EOPNOTSUPP;
1246 if (ops->ndo_set_vf_tx_rate)
1247 err = ops->ndo_set_vf_tx_rate(dev, ivt->vf,
1248 ivt->rate);
1249 break;
1250 }
5f8444a3
GR		 1251 case IFLA_VF_SPOOFCHK: {
1252 struct ifla_vf_spoofchk *ivs;
1253 ivs = nla_data(vf);
1254 err = -EOPNOTSUPP;
1255 if (ops->ndo_set_vf_spoofchk)
1256 err = ops->ndo_set_vf_spoofchk(dev, ivs->vf,
1257 ivs->setting);
1258 break;
1259 }
c02db8c6
CW		 1260 default:
1261 err = -EINVAL;
1262 break;
1263 }
1264 if (err)
1265 break;
1266 }
1267 return err;
1268}
1269
fbaec0ea
JP		 1270static int do_set_master(struct net_device *dev, int ifindex)
1271{
898e5061 1272 struct net_device *upper_dev = netdev_master_upper_dev_get(dev);
fbaec0ea
JP		 1273 const struct net_device_ops *ops;
1274 int err;
1275
898e5061
JP		 1276 if (upper_dev) {
1277 if (upper_dev->ifindex == ifindex)
fbaec0ea 1278 return 0;
898e5061 1279 ops = upper_dev->netdev_ops;
fbaec0ea 1280 if (ops->ndo_del_slave) {
898e5061 1281 err = ops->ndo_del_slave(upper_dev, dev);
fbaec0ea
JP		 1282 if (err)
1283 return err;
1284 } else {
1285 return -EOPNOTSUPP;
1286 }
1287 }
1288
1289 if (ifindex) {
898e5061
JP		 1290 upper_dev = __dev_get_by_index(dev_net(dev), ifindex);
1291 if (!upper_dev)
fbaec0ea 1292 return -EINVAL;
898e5061 1293 ops = upper_dev->netdev_ops;
fbaec0ea 1294 if (ops->ndo_add_slave) {
898e5061 1295 err = ops->ndo_add_slave(upper_dev, dev);
fbaec0ea
JP		 1296 if (err)
1297 return err;
1298 } else {
1299 return -EOPNOTSUPP;
1300 }
1301 }
1302 return 0;
1303}
1304
1141a455
EB		 1305static int do_setlink(const struct sk_buff *skb,
1306 struct net_device *dev, struct ifinfomsg *ifm,
38f7b870 1307 struct nlattr **tb, char *ifname, int modified)
1da177e4 1308{
d314774c 1309 const struct net_device_ops *ops = dev->netdev_ops;
0157f60c 1310 int err;
1da177e4 1311
f0630529 1312 if (tb[IFLA_NET_NS_PID] || tb[IFLA_NET_NS_FD]) {
81adee47 1313 struct net *net = rtnl_link_get_net(dev_net(dev), tb);
d8a5ec67
EB		 1314 if (IS_ERR(net)) {
1315 err = PTR_ERR(net);
1316 goto errout;
1317 }
1141a455 1318 if (!netlink_ns_capable(skb, net->user_ns, CAP_NET_ADMIN)) {
1973ac37 1319 put_net(net);
b51642f6
EB		 1320 err = -EPERM;
1321 goto errout;
1322 }
d8a5ec67
EB		 1323 err = dev_change_net_namespace(dev, net, ifname);
1324 put_net(net);
1325 if (err)
1326 goto errout;
1327 modified = 1;
1328 }
1329
da5e0494 1330 if (tb[IFLA_MAP]) {
1da177e4
LT		 1331 struct rtnl_link_ifmap *u_map;
1332 struct ifmap k_map;
1333
d314774c 1334 if (!ops->ndo_set_config) {
1da177e4 1335 err = -EOPNOTSUPP;
0157f60c 1336 goto errout;
1da177e4
LT		 1337 }
1338
1339 if (!netif_device_present(dev)) {
1340 err = -ENODEV;
0157f60c 1341 goto errout;
1da177e4 1342 }
1da177e4 1343
da5e0494 1344 u_map = nla_data(tb[IFLA_MAP]);
1da177e4
LT		 1345 k_map.mem_start = (unsigned long) u_map->mem_start;
1346 k_map.mem_end = (unsigned long) u_map->mem_end;
1347 k_map.base_addr = (unsigned short) u_map->base_addr;
1348 k_map.irq = (unsigned char) u_map->irq;
1349 k_map.dma = (unsigned char) u_map->dma;
1350 k_map.port = (unsigned char) u_map->port;
1351
d314774c 1352 err = ops->ndo_set_config(dev, &k_map);
da5e0494 1353 if (err < 0)
0157f60c 1354 goto errout;
1da177e4 1355
da5e0494 1356 modified = 1;
1da177e4
LT		 1357 }
1358
da5e0494 1359 if (tb[IFLA_ADDRESS]) {
70f8e78e
DM		 1360 struct sockaddr *sa;
1361 int len;
1362
70f8e78e
DM		 1363 len = sizeof(sa_family_t) + dev->addr_len;
1364 sa = kmalloc(len, GFP_KERNEL);
1365 if (!sa) {
1366 err = -ENOMEM;
0157f60c 1367 goto errout;
70f8e78e
DM		 1368 }
1369 sa->sa_family = dev->type;
da5e0494 1370 memcpy(sa->sa_data, nla_data(tb[IFLA_ADDRESS]),
70f8e78e 1371 dev->addr_len);
e7c3273e 1372 err = dev_set_mac_address(dev, sa);
70f8e78e 1373 kfree(sa);
1da177e4 1374 if (err)
0157f60c 1375 goto errout;
da5e0494 1376 modified = 1;
1da177e4
LT		 1377 }
1378
da5e0494
TG		 1379 if (tb[IFLA_MTU]) {
1380 err = dev_set_mtu(dev, nla_get_u32(tb[IFLA_MTU]));
1381 if (err < 0)
0157f60c 1382 goto errout;
da5e0494 1383 modified = 1;
1da177e4
LT		 1384 }
1385
cbda10fa
VD		 1386 if (tb[IFLA_GROUP]) {
1387 dev_set_group(dev, nla_get_u32(tb[IFLA_GROUP]));
1388 modified = 1;
1389 }
1390
da5e0494
TG		 1391 /*
1392 * Interface selected by interface index but interface
1393 * name provided implies that a name change has been
1394 * requested.
1395 */
51055be8 1396 if (ifm->ifi_index > 0 && ifname[0]) {
da5e0494
TG		 1397 err = dev_change_name(dev, ifname);
1398 if (err < 0)
0157f60c 1399 goto errout;
da5e0494 1400 modified = 1;
1da177e4
LT		 1401 }
1402
0b815a1a
SH		 1403 if (tb[IFLA_IFALIAS]) {
1404 err = dev_set_alias(dev, nla_data(tb[IFLA_IFALIAS]),
1405 nla_len(tb[IFLA_IFALIAS]));
1406 if (err < 0)
1407 goto errout;
1408 modified = 1;
1409 }
1410
da5e0494
TG		 1411 if (tb[IFLA_BROADCAST]) {
1412 nla_memcpy(dev->broadcast, tb[IFLA_BROADCAST], dev->addr_len);
e7c3273e 1413 call_netdevice_notifiers(NETDEV_CHANGEADDR, dev);
1da177e4
LT		 1414 }
1415
83b496e9 1416 if (ifm->ifi_flags || ifm->ifi_change) {
3729d502 1417 err = dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm));
5f9021cf
JB		 1418 if (err < 0)
1419 goto errout;
83b496e9 1420 }
1da177e4 1421
fbaec0ea
JP		 1422 if (tb[IFLA_MASTER]) {
1423 err = do_set_master(dev, nla_get_u32(tb[IFLA_MASTER]));
1424 if (err)
1425 goto errout;
1426 modified = 1;
1427 }
1428
9a57247f
JP		 1429 if (tb[IFLA_CARRIER]) {
1430 err = dev_change_carrier(dev, nla_get_u8(tb[IFLA_CARRIER]));
1431 if (err)
1432 goto errout;
1433 modified = 1;
1434 }
1435
93b2d4a2
DM		 1436 if (tb[IFLA_TXQLEN])
1437 dev->tx_queue_len = nla_get_u32(tb[IFLA_TXQLEN]);
b00055aa 1438
da5e0494 1439 if (tb[IFLA_OPERSTATE])
93b2d4a2 1440 set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE]));
b00055aa 1441
da5e0494 1442 if (tb[IFLA_LINKMODE]) {
93b2d4a2
DM		 1443 write_lock_bh(&dev_base_lock);
1444 dev->link_mode = nla_get_u8(tb[IFLA_LINKMODE]);
1445 write_unlock_bh(&dev_base_lock);
b00055aa
SR		 1446 }
1447
c02db8c6
CW		 1448 if (tb[IFLA_VFINFO_LIST]) {
1449 struct nlattr *attr;
1450 int rem;
1451 nla_for_each_nested(attr, tb[IFLA_VFINFO_LIST], rem) {
253683bb
DH		 1452 if (nla_type(attr) != IFLA_VF_INFO) {
1453 err = -EINVAL;
c02db8c6 1454 goto errout;
253683bb 1455 }
c02db8c6
CW		 1456 err = do_setvfinfo(dev, attr);
1457 if (err < 0)
1458 goto errout;
1459 modified = 1;
1460 }
ebc08a6f 1461 }
1da177e4
LT		 1462 err = 0;
1463
57b61080
SF		 1464 if (tb[IFLA_VF_PORTS]) {
1465 struct nlattr *port[IFLA_PORT_MAX+1];
1466 struct nlattr *attr;
1467 int vf;
1468 int rem;
1469
1470 err = -EOPNOTSUPP;
1471 if (!ops->ndo_set_vf_port)
1472 goto errout;
1473
1474 nla_for_each_nested(attr, tb[IFLA_VF_PORTS], rem) {
1475 if (nla_type(attr) != IFLA_VF_PORT)
1476 continue;
1477 err = nla_parse_nested(port, IFLA_PORT_MAX,
1478 attr, ifla_port_policy);
1479 if (err < 0)
1480 goto errout;
1481 if (!port[IFLA_PORT_VF]) {
1482 err = -EOPNOTSUPP;
1483 goto errout;
1484 }
1485 vf = nla_get_u32(port[IFLA_PORT_VF]);
1486 err = ops->ndo_set_vf_port(dev, vf, port);
1487 if (err < 0)
1488 goto errout;
1489 modified = 1;
1490 }
1491 }
1492 err = 0;
1493
1494 if (tb[IFLA_PORT_SELF]) {
1495 struct nlattr *port[IFLA_PORT_MAX+1];
1496
1497 err = nla_parse_nested(port, IFLA_PORT_MAX,
1498 tb[IFLA_PORT_SELF], ifla_port_policy);
1499 if (err < 0)
1500 goto errout;
1501
1502 err = -EOPNOTSUPP;
1503 if (ops->ndo_set_vf_port)
1504 err = ops->ndo_set_vf_port(dev, PORT_SELF_VF, port);
1505 if (err < 0)
1506 goto errout;
1507 modified = 1;
1508 }
f8ff182c
TG		 1509
1510 if (tb[IFLA_AF_SPEC]) {
1511 struct nlattr *af;
1512 int rem;
1513
1514 nla_for_each_nested(af, tb[IFLA_AF_SPEC], rem) {
1515 const struct rtnl_af_ops *af_ops;
1516
1517 if (!(af_ops = rtnl_af_lookup(nla_type(af))))
cf7afbfe 1518 BUG();
f8ff182c 1519
cf7afbfe 1520 err = af_ops->set_link_af(dev, af);
f8ff182c
TG		 1521 if (err < 0)
1522 goto errout;
1523
1524 modified = 1;
1525 }
1526 }
57b61080
SF		 1527 err = 0;
1528
0157f60c 1529errout:
e87cc472
JP		 1530 if (err < 0 && modified)
1531 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",
1532 dev->name);
da5e0494 1533
0157f60c
PM		 1534 return err;
1535}
1da177e4 1536
661d2967 1537static int rtnl_setlink(struct sk_buff *skb, struct nlmsghdr *nlh)
0157f60c 1538{
3b1e0a65 1539 struct net *net = sock_net(skb->sk);
0157f60c
PM		 1540 struct ifinfomsg *ifm;
1541 struct net_device *dev;
1542 int err;
1543 struct nlattr *tb[IFLA_MAX+1];
1544 char ifname[IFNAMSIZ];
1545
1546 err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy);
1547 if (err < 0)
1548 goto errout;
1549
1550 if (tb[IFLA_IFNAME])
1551 nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ);
1552 else
1553 ifname[0] = '\0';
1554
1555 err = -EINVAL;
1556 ifm = nlmsg_data(nlh);
1557 if (ifm->ifi_index > 0)
a3d12891 1558 dev = __dev_get_by_index(net, ifm->ifi_index);
0157f60c 1559 else if (tb[IFLA_IFNAME])
a3d12891 1560 dev = __dev_get_by_name(net, ifname);
0157f60c
PM		 1561 else
1562 goto errout;
1563
1564 if (dev == NULL) {
1565 err = -ENODEV;
1566 goto errout;
1567 }
1568
e0d087af
ED		 1569 err = validate_linkmsg(dev, tb);
1570 if (err < 0)
a3d12891 1571 goto errout;
0157f60c 1572
1141a455 1573 err = do_setlink(skb, dev, ifm, tb, ifname, 0);
da5e0494 1574errout:
1da177e4
LT		 1575 return err;
1576}
1577
661d2967 1578static int rtnl_dellink(struct sk_buff *skb, struct nlmsghdr *nlh)
38f7b870 1579{
3b1e0a65 1580 struct net *net = sock_net(skb->sk);
38f7b870
PM		 1581 const struct rtnl_link_ops *ops;
1582 struct net_device *dev;
1583 struct ifinfomsg *ifm;
1584 char ifname[IFNAMSIZ];
1585 struct nlattr *tb[IFLA_MAX+1];
1586 int err;
226bd341 1587 LIST_HEAD(list_kill);
38f7b870
PM		 1588
1589 err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy);
1590 if (err < 0)
1591 return err;
1592
1593 if (tb[IFLA_IFNAME])
1594 nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ);
1595
1596 ifm = nlmsg_data(nlh);
1597 if (ifm->ifi_index > 0)
881d966b 1598 dev = __dev_get_by_index(net, ifm->ifi_index);
38f7b870 1599 else if (tb[IFLA_IFNAME])
881d966b 1600 dev = __dev_get_by_name(net, ifname);
38f7b870
PM		 1601 else
1602 return -EINVAL;
1603
1604 if (!dev)
1605 return -ENODEV;
1606
1607 ops = dev->rtnl_link_ops;
1608 if (!ops)
1609 return -EOPNOTSUPP;
1610
226bd341
ED		 1611 ops->dellink(dev, &list_kill);
1612 unregister_netdevice_many(&list_kill);
38f7b870
PM		 1613 return 0;
1614}
1615
3729d502
PM		 1616int rtnl_configure_link(struct net_device *dev, const struct ifinfomsg *ifm)
1617{
1618 unsigned int old_flags;
1619 int err;
1620
1621 old_flags = dev->flags;
1622 if (ifm && (ifm->ifi_flags || ifm->ifi_change)) {
1623 err = __dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm));
1624 if (err < 0)
1625 return err;
1626 }
1627
1628 dev->rtnl_link_state = RTNL_LINK_INITIALIZED;
1629 rtmsg_ifinfo(RTM_NEWLINK, dev, ~0U);
1630
1631 __dev_notify_flags(dev, old_flags);
1632 return 0;
1633}
1634EXPORT_SYMBOL(rtnl_configure_link);
1635
c0713563 1636struct net_device *rtnl_create_link(struct net *net,
81adee47 1637 char *ifname, const struct rtnl_link_ops *ops, struct nlattr *tb[])
e7199288
PE		 1638{
1639 int err;
1640 struct net_device *dev;
d40156aa
JP		 1641 unsigned int num_tx_queues = 1;
1642 unsigned int num_rx_queues = 1;
e7199288 1643
76ff5cc9
JP		 1644 if (tb[IFLA_NUM_TX_QUEUES])
1645 num_tx_queues = nla_get_u32(tb[IFLA_NUM_TX_QUEUES]);
1646 else if (ops->get_num_tx_queues)
d40156aa 1647 num_tx_queues = ops->get_num_tx_queues();
76ff5cc9
JP		 1648
1649 if (tb[IFLA_NUM_RX_QUEUES])
1650 num_rx_queues = nla_get_u32(tb[IFLA_NUM_RX_QUEUES]);
1651 else if (ops->get_num_rx_queues)
d40156aa 1652 num_rx_queues = ops->get_num_rx_queues();
efacb309 1653
e7199288 1654 err = -ENOMEM;
d40156aa
JP		 1655 dev = alloc_netdev_mqs(ops->priv_size, ifname, ops->setup,
1656 num_tx_queues, num_rx_queues);
e7199288
PE		 1657 if (!dev)
1658 goto err;
1659
81adee47
EB		 1660 dev_net_set(dev, net);
1661 dev->rtnl_link_ops = ops;
3729d502 1662 dev->rtnl_link_state = RTNL_LINK_INITIALIZING;
81adee47 1663
e7199288
PE		 1664 if (tb[IFLA_MTU])
1665 dev->mtu = nla_get_u32(tb[IFLA_MTU]);
2afb9b53 1666 if (tb[IFLA_ADDRESS]) {
e7199288
PE		 1667 memcpy(dev->dev_addr, nla_data(tb[IFLA_ADDRESS]),
1668 nla_len(tb[IFLA_ADDRESS]));
2afb9b53
JP		 1669 dev->addr_assign_type = NET_ADDR_SET;
1670 }
e7199288
PE		 1671 if (tb[IFLA_BROADCAST])
1672 memcpy(dev->broadcast, nla_data(tb[IFLA_BROADCAST]),
1673 nla_len(tb[IFLA_BROADCAST]));
1674 if (tb[IFLA_TXQLEN])
1675 dev->tx_queue_len = nla_get_u32(tb[IFLA_TXQLEN]);
1676 if (tb[IFLA_OPERSTATE])
93b2d4a2 1677 set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE]));
e7199288
PE		 1678 if (tb[IFLA_LINKMODE])
1679 dev->link_mode = nla_get_u8(tb[IFLA_LINKMODE]);
ffa934f1
PM		 1680 if (tb[IFLA_GROUP])
1681 dev_set_group(dev, nla_get_u32(tb[IFLA_GROUP]));
e7199288
PE		 1682
1683 return dev;
1684
e7199288
PE		 1685err:
1686 return ERR_PTR(err);
1687}
e0d087af 1688EXPORT_SYMBOL(rtnl_create_link);
e7199288 1689
1141a455
EB		 1690static int rtnl_group_changelink(const struct sk_buff *skb,
1691 struct net *net, int group,
e7ed828f
VD		 1692 struct ifinfomsg *ifm,
1693 struct nlattr **tb)
1694{
1695 struct net_device *dev;
1696 int err;
1697
1698 for_each_netdev(net, dev) {
1699 if (dev->group == group) {
1141a455 1700 err = do_setlink(skb, dev, ifm, tb, NULL, 0);
e7ed828f
VD		 1701 if (err < 0)
1702 return err;
1703 }
1704 }
1705
1706 return 0;
1707}
1708
661d2967 1709static int rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh)
38f7b870 1710{
3b1e0a65 1711 struct net *net = sock_net(skb->sk);
38f7b870
PM		 1712 const struct rtnl_link_ops *ops;
1713 struct net_device *dev;
1714 struct ifinfomsg *ifm;
1715 char kind[MODULE_NAME_LEN];
1716 char ifname[IFNAMSIZ];
1717 struct nlattr *tb[IFLA_MAX+1];
1718 struct nlattr *linkinfo[IFLA_INFO_MAX+1];
1719 int err;
1720
95a5afca 1721#ifdef CONFIG_MODULES
38f7b870 1722replay:
8072f085 1723#endif
38f7b870
PM		 1724 err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy);
1725 if (err < 0)
1726 return err;
1727
1728 if (tb[IFLA_IFNAME])
1729 nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ);
1730 else
1731 ifname[0] = '\0';
1732
1733 ifm = nlmsg_data(nlh);
1734 if (ifm->ifi_index > 0)
881d966b 1735 dev = __dev_get_by_index(net, ifm->ifi_index);
e7ed828f
VD		 1736 else {
1737 if (ifname[0])
1738 dev = __dev_get_by_name(net, ifname);
e7ed828f
VD		 1739 else
1740 dev = NULL;
1741 }
38f7b870 1742
e0d087af
ED		 1743 err = validate_linkmsg(dev, tb);
1744 if (err < 0)
1840bb13
TG		 1745 return err;
1746
38f7b870
PM		 1747 if (tb[IFLA_LINKINFO]) {
1748 err = nla_parse_nested(linkinfo, IFLA_INFO_MAX,
1749 tb[IFLA_LINKINFO], ifla_info_policy);
1750 if (err < 0)
1751 return err;
1752 } else
1753 memset(linkinfo, 0, sizeof(linkinfo));
1754
1755 if (linkinfo[IFLA_INFO_KIND]) {
1756 nla_strlcpy(kind, linkinfo[IFLA_INFO_KIND], sizeof(kind));
1757 ops = rtnl_link_ops_get(kind);
1758 } else {
1759 kind[0] = '\0';
1760 ops = NULL;
1761 }
1762
1763 if (1) {
1764 struct nlattr *attr[ops ? ops->maxtype + 1 : 0], **data = NULL;
81adee47 1765 struct net *dest_net;
38f7b870
PM		 1766
1767 if (ops) {
1768 if (ops->maxtype && linkinfo[IFLA_INFO_DATA]) {
1769 err = nla_parse_nested(attr, ops->maxtype,
1770 linkinfo[IFLA_INFO_DATA],
1771 ops->policy);
1772 if (err < 0)
1773 return err;
1774 data = attr;
1775 }
1776 if (ops->validate) {
1777 err = ops->validate(tb, data);
1778 if (err < 0)
1779 return err;
1780 }
1781 }
1782
1783 if (dev) {
1784 int modified = 0;
1785
1786 if (nlh->nlmsg_flags & NLM_F_EXCL)
1787 return -EEXIST;
1788 if (nlh->nlmsg_flags & NLM_F_REPLACE)
1789 return -EOPNOTSUPP;
1790
1791 if (linkinfo[IFLA_INFO_DATA]) {
1792 if (!ops || ops != dev->rtnl_link_ops ||
1793 !ops->changelink)
1794 return -EOPNOTSUPP;
1795
1796 err = ops->changelink(dev, tb, data);
1797 if (err < 0)
1798 return err;
1799 modified = 1;
1800 }
1801
1141a455 1802 return do_setlink(skb, dev, ifm, tb, ifname, modified);
38f7b870
PM		 1803 }
1804
ffa934f1
PM		 1805 if (!(nlh->nlmsg_flags & NLM_F_CREATE)) {
1806 if (ifm->ifi_index == 0 && tb[IFLA_GROUP])
1141a455 1807 return rtnl_group_changelink(skb, net,
ffa934f1
PM		 1808 nla_get_u32(tb[IFLA_GROUP]),
1809 ifm, tb);
38f7b870 1810 return -ENODEV;
ffa934f1 1811 }
38f7b870 1812
0e06877c 1813 if (tb[IFLA_MAP] || tb[IFLA_MASTER] || tb[IFLA_PROTINFO])
38f7b870
PM		 1814 return -EOPNOTSUPP;
1815
1816 if (!ops) {
95a5afca 1817#ifdef CONFIG_MODULES
38f7b870
PM		 1818 if (kind[0]) {
1819 __rtnl_unlock();
1820 request_module("rtnl-link-%s", kind);
1821 rtnl_lock();
1822 ops = rtnl_link_ops_get(kind);
1823 if (ops)
1824 goto replay;
1825 }
1826#endif
1827 return -EOPNOTSUPP;
1828 }
1829
1830 if (!ifname[0])
1831 snprintf(ifname, IFNAMSIZ, "%s%%d", ops->kind);
e7199288 1832
81adee47 1833 dest_net = rtnl_link_get_net(net, tb);
13ad1774
EB		 1834 if (IS_ERR(dest_net))
1835 return PTR_ERR(dest_net);
1836
c0713563 1837 dev = rtnl_create_link(dest_net, ifname, ops, tb);
9c7dafbf 1838 if (IS_ERR(dev)) {
e7199288 1839 err = PTR_ERR(dev);
9c7dafbf
PE		 1840 goto out;
1841 }
1842
1843 dev->ifindex = ifm->ifi_index;
1844
1845 if (ops->newlink)
81adee47 1846 err = ops->newlink(net, dev, tb, data);
2d85cba2
PM		 1847 else
1848 err = register_netdevice(dev);
80032cff
DC		 1849
1850 if (err < 0 && !IS_ERR(dev))
38f7b870 1851 free_netdev(dev);
80032cff 1852 if (err < 0)
3729d502 1853 goto out;
81adee47 1854
3729d502 1855 err = rtnl_configure_link(dev, ifm);
140b057c
WC		 1856 if (err < 0) {
1857 if (ops->newlink) {
1858 LIST_HEAD(list_kill);
1859
1860 ops->dellink(dev, &list_kill);
1861 unregister_netdevice_many(&list_kill);
1862 } else {
1863 unregister_netdevice(dev);
1864 }
1865 }
3729d502 1866out:
81adee47 1867 put_net(dest_net);
38f7b870
PM		 1868 return err;
1869 }
1870}
1871
661d2967 1872static int rtnl_getlink(struct sk_buff *skb, struct nlmsghdr* nlh)
711e2c33 1873{
3b1e0a65 1874 struct net *net = sock_net(skb->sk);
b60c5115 1875 struct ifinfomsg *ifm;
a3d12891 1876 char ifname[IFNAMSIZ];
b60c5115
TG		 1877 struct nlattr *tb[IFLA_MAX+1];
1878 struct net_device *dev = NULL;
1879 struct sk_buff *nskb;
339bf98f 1880 int err;
115c9b81 1881 u32 ext_filter_mask = 0;
711e2c33 1882
b60c5115
TG		 1883 err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy);
1884 if (err < 0)
9918f230 1885 return err;
b60c5115 1886
a3d12891
ED		 1887 if (tb[IFLA_IFNAME])
1888 nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ);
1889
115c9b81
GR		 1890 if (tb[IFLA_EXT_MASK])
1891 ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]);
1892
b60c5115 1893 ifm = nlmsg_data(nlh);
a3d12891
ED		 1894 if (ifm->ifi_index > 0)
1895 dev = __dev_get_by_index(net, ifm->ifi_index);
1896 else if (tb[IFLA_IFNAME])
1897 dev = __dev_get_by_name(net, ifname);
1898 else
711e2c33 1899 return -EINVAL;
711e2c33 1900
a3d12891
ED		 1901 if (dev == NULL)
1902 return -ENODEV;
1903
115c9b81 1904 nskb = nlmsg_new(if_nlmsg_size(dev, ext_filter_mask), GFP_KERNEL);
a3d12891
ED		 1905 if (nskb == NULL)
1906 return -ENOBUFS;
b60c5115 1907
15e47304 1908 err = rtnl_fill_ifinfo(nskb, dev, RTM_NEWLINK, NETLINK_CB(skb).portid,
115c9b81 1909 nlh->nlmsg_seq, 0, 0, ext_filter_mask);
26932566
PM		 1910 if (err < 0) {
1911 /* -EMSGSIZE implies BUG in if_nlmsg_size */
1912 WARN_ON(err == -EMSGSIZE);
1913 kfree_skb(nskb);
a3d12891 1914 } else
15e47304 1915 err = rtnl_unicast(nskb, net, NETLINK_CB(skb).portid);
711e2c33 1916
b60c5115 1917 return err;
711e2c33 1918}
711e2c33 1919
115c9b81 1920static u16 rtnl_calcit(struct sk_buff *skb, struct nlmsghdr *nlh)
c7ac8679 1921{
115c9b81
GR		 1922 struct net *net = sock_net(skb->sk);
1923 struct net_device *dev;
1924 struct nlattr *tb[IFLA_MAX+1];
1925 u32 ext_filter_mask = 0;
1926 u16 min_ifinfo_dump_size = 0;
fb0d10bf
MS		 1927 int hdrlen;
1928
1929 /* Same kernel<->userspace interface hack as in rtnl_dump_ifinfo. */
1930 hdrlen = nlmsg_len(nlh) < sizeof(struct ifinfomsg) ?
1931 sizeof(struct rtgenmsg) : sizeof(struct ifinfomsg);
115c9b81 1932
fb0d10bf 1933 if (nlmsg_parse(nlh, hdrlen, tb, IFLA_MAX, ifla_policy) >= 0) {
a4b64fbe
ED		 1934 if (tb[IFLA_EXT_MASK])
1935 ext_filter_mask = nla_get_u32(tb[IFLA_EXT_MASK]);
1936 }
115c9b81
GR		 1937
1938 if (!ext_filter_mask)
1939 return NLMSG_GOODSIZE;
1940 /*
1941 * traverse the list of net devices and compute the minimum
1942 * buffer size based upon the filter mask.
1943 */
1944 list_for_each_entry(dev, &net->dev_base_head, dev_list) {
1945 min_ifinfo_dump_size = max_t(u16, min_ifinfo_dump_size,
1946 if_nlmsg_size(dev,
1947 ext_filter_mask));
1948 }
1949
c7ac8679
GR		 1950 return min_ifinfo_dump_size;
1951}
1952
42bad1da 1953static int rtnl_dump_all(struct sk_buff *skb, struct netlink_callback *cb)
1da177e4
LT		 1954{
1955 int idx;
1956 int s_idx = cb->family;
1957
1958 if (s_idx == 0)
1959 s_idx = 1;
25239cee 1960 for (idx = 1; idx <= RTNL_FAMILY_MAX; idx++) {
1da177e4
LT		 1961 int type = cb->nlh->nlmsg_type-RTM_BASE;
1962 if (idx < s_idx || idx == PF_PACKET)
1963 continue;
e2849863
TG		 1964 if (rtnl_msg_handlers[idx] == NULL ||
1965 rtnl_msg_handlers[idx][type].dumpit == NULL)
1da177e4 1966 continue;
0465277f 1967 if (idx > s_idx) {
1da177e4 1968 memset(&cb->args[0], 0, sizeof(cb->args));
0465277f
ND		 1969 cb->prev_seq = 0;
1970 cb->seq = 0;
1971 }
e2849863 1972 if (rtnl_msg_handlers[idx][type].dumpit(skb, cb))
1da177e4
LT		 1973 break;
1974 }
1975 cb->family = idx;
1976
1977 return skb->len;
1978}
1979
95c96174 1980void rtmsg_ifinfo(int type, struct net_device *dev, unsigned int change)
1da177e4 1981{
c346dca1 1982 struct net *net = dev_net(dev);
1da177e4 1983 struct sk_buff *skb;
0ec6d3f4 1984 int err = -ENOBUFS;
c7ac8679 1985 size_t if_info_size;
1da177e4 1986
115c9b81 1987 skb = nlmsg_new((if_info_size = if_nlmsg_size(dev, 0)), GFP_KERNEL);
0ec6d3f4
TG		 1988 if (skb == NULL)
1989 goto errout;
1da177e4 1990
115c9b81 1991 err = rtnl_fill_ifinfo(skb, dev, type, 0, 0, change, 0, 0);
26932566
PM		 1992 if (err < 0) {
1993 /* -EMSGSIZE implies BUG in if_nlmsg_size() */
1994 WARN_ON(err == -EMSGSIZE);
1995 kfree_skb(skb);
1996 goto errout;
1997 }
1ce85fe4
PNA		 1998 rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_KERNEL);
1999 return;
0ec6d3f4
TG		 2000errout:
2001 if (err < 0)
4b3da706 2002 rtnl_set_sk_err(net, RTNLGRP_LINK, err);
1da177e4 2003}
471cb5a3 2004EXPORT_SYMBOL(rtmsg_ifinfo);
1da177e4 2005
d83b0603
JF		 2006static int nlmsg_populate_fdb_fill(struct sk_buff *skb,
2007 struct net_device *dev,
2008 u8 *addr, u32 pid, u32 seq,
c0669e49
ND		 2009 int type, unsigned int flags,
2010 int nlflags)
d83b0603
JF		 2011{
2012 struct nlmsghdr *nlh;
2013 struct ndmsg *ndm;
2014
c0669e49 2015 nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ndm), nlflags);
d83b0603
JF		 2016 if (!nlh)
2017 return -EMSGSIZE;
2018
2019 ndm = nlmsg_data(nlh);
2020 ndm->ndm_family = AF_BRIDGE;
2021 ndm->ndm_pad1 = 0;
2022 ndm->ndm_pad2 = 0;
2023 ndm->ndm_flags = flags;
2024 ndm->ndm_type = 0;
2025 ndm->ndm_ifindex = dev->ifindex;
2026 ndm->ndm_state = NUD_PERMANENT;
2027
2028 if (nla_put(skb, NDA_LLADDR, ETH_ALEN, addr))
2029 goto nla_put_failure;
2030
2031 return nlmsg_end(skb, nlh);
2032
2033nla_put_failure:
2034 nlmsg_cancel(skb, nlh);
2035 return -EMSGSIZE;
2036}
2037
3ff661c3
JF		 2038static inline size_t rtnl_fdb_nlmsg_size(void)
2039{
2040 return NLMSG_ALIGN(sizeof(struct ndmsg)) + nla_total_size(ETH_ALEN);
2041}
2042
2043static void rtnl_fdb_notify(struct net_device *dev, u8 *addr, int type)
2044{
2045 struct net *net = dev_net(dev);
2046 struct sk_buff *skb;
2047 int err = -ENOBUFS;
2048
2049 skb = nlmsg_new(rtnl_fdb_nlmsg_size(), GFP_ATOMIC);
2050 if (!skb)
2051 goto errout;
2052
c0669e49 2053 err = nlmsg_populate_fdb_fill(skb, dev, addr, 0, 0, type, NTF_SELF, 0);
3ff661c3
JF		 2054 if (err < 0) {
2055 kfree_skb(skb);
2056 goto errout;
2057 }
2058
2059 rtnl_notify(skb, net, 0, RTNLGRP_NEIGH, NULL, GFP_ATOMIC);
2060 return;
2061errout:
2062 rtnl_set_sk_err(net, RTNLGRP_NEIGH, err);
2063}
2064
090096bf
VY		 2065/**
2066 * ndo_dflt_fdb_add - default netdevice operation to add an FDB entry
2067 */
2068int ndo_dflt_fdb_add(struct ndmsg *ndm,
2069 struct nlattr *tb[],
2070 struct net_device *dev,
2071 const unsigned char *addr,
2072 u16 flags)
2073{
2074 int err = -EINVAL;
2075
2076 /* If aging addresses are supported device will need to
2077 * implement its own handler for this.
2078 */
2079 if (ndm->ndm_state && !(ndm->ndm_state & NUD_PERMANENT)) {
2080 pr_info("%s: FDB only supports static addresses\n", dev->name);
2081 return err;
2082 }
2083
2084 if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
2085 err = dev_uc_add_excl(dev, addr);
2086 else if (is_multicast_ether_addr(addr))
2087 err = dev_mc_add_excl(dev, addr);
2088
2089 /* Only return duplicate errors if NLM_F_EXCL is set */
2090 if (err == -EEXIST && !(flags & NLM_F_EXCL))
2091 err = 0;
2092
2093 return err;
2094}
2095EXPORT_SYMBOL(ndo_dflt_fdb_add);
2096
661d2967 2097static int rtnl_fdb_add(struct sk_buff *skb, struct nlmsghdr *nlh)
77162022
JF		 2098{
2099 struct net *net = sock_net(skb->sk);
77162022
JF		 2100 struct ndmsg *ndm;
2101 struct nlattr *tb[NDA_MAX+1];
2102 struct net_device *dev;
2103 u8 *addr;
2104 int err;
2105
2106 err = nlmsg_parse(nlh, sizeof(*ndm), tb, NDA_MAX, NULL);
2107 if (err < 0)
2108 return err;
2109
2110 ndm = nlmsg_data(nlh);
2111 if (ndm->ndm_ifindex == 0) {
2112 pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid ifindex\n");
2113 return -EINVAL;
2114 }
2115
2116 dev = __dev_get_by_index(net, ndm->ndm_ifindex);
2117 if (dev == NULL) {
2118 pr_info("PF_BRIDGE: RTM_NEWNEIGH with unknown ifindex\n");
2119 return -ENODEV;
2120 }
2121
2122 if (!tb[NDA_LLADDR] || nla_len(tb[NDA_LLADDR]) != ETH_ALEN) {
2123 pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid address\n");
2124 return -EINVAL;
2125 }
2126
2127 addr = nla_data(tb[NDA_LLADDR]);
6681712d 2128 if (is_zero_ether_addr(addr)) {
77162022
JF		 2129 pr_info("PF_BRIDGE: RTM_NEWNEIGH with invalid ether address\n");
2130 return -EINVAL;
2131 }
2132
2133 err = -EOPNOTSUPP;
2134
2135 /* Support fdb on master device the net/bridge default case */
2136 if ((!ndm->ndm_flags || ndm->ndm_flags & NTF_MASTER) &&
2137 (dev->priv_flags & IFF_BRIDGE_PORT)) {
898e5061
JP		 2138 struct net_device *br_dev = netdev_master_upper_dev_get(dev);
2139 const struct net_device_ops *ops = br_dev->netdev_ops;
2140
2141 err = ops->ndo_fdb_add(ndm, tb, dev, addr, nlh->nlmsg_flags);
77162022
JF		 2142 if (err)
2143 goto out;
2144 else
2145 ndm->ndm_flags &= ~NTF_MASTER;
2146 }
2147
2148 /* Embedded bridge, macvlan, and any other device support */
090096bf
VY		 2149 if ((ndm->ndm_flags & NTF_SELF)) {
2150 if (dev->netdev_ops->ndo_fdb_add)
2151 err = dev->netdev_ops->ndo_fdb_add(ndm, tb, dev, addr,
2152 nlh->nlmsg_flags);
2153 else
2154 err = ndo_dflt_fdb_add(ndm, tb, dev, addr,
2155 nlh->nlmsg_flags);
77162022 2156
3ff661c3
JF		 2157 if (!err) {
2158 rtnl_fdb_notify(dev, addr, RTM_NEWNEIGH);
77162022 2159 ndm->ndm_flags &= ~NTF_SELF;
3ff661c3 2160 }
77162022
JF		 2161 }
2162out:
2163 return err;
2164}
2165
090096bf
VY		 2166/**
2167 * ndo_dflt_fdb_del - default netdevice operation to delete an FDB entry
2168 */
2169int ndo_dflt_fdb_del(struct ndmsg *ndm,
2170 struct nlattr *tb[],
2171 struct net_device *dev,
2172 const unsigned char *addr)
2173{
2174 int err = -EOPNOTSUPP;
2175
2176 /* If aging addresses are supported device will need to
2177 * implement its own handler for this.
2178 */
21db4be1 2179 if (!(ndm->ndm_state & NUD_PERMANENT)) {
090096bf
VY		 2180 pr_info("%s: FDB only supports static addresses\n", dev->name);
2181 return -EINVAL;
2182 }
2183
2184 if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr))
2185 err = dev_uc_del(dev, addr);
2186 else if (is_multicast_ether_addr(addr))
2187 err = dev_mc_del(dev, addr);
2188 else
2189 err = -EINVAL;
2190
2191 return err;
2192}
2193EXPORT_SYMBOL(ndo_dflt_fdb_del);
2194
661d2967 2195static int rtnl_fdb_del(struct sk_buff *skb, struct nlmsghdr *nlh)
77162022
JF		 2196{
2197 struct net *net = sock_net(skb->sk);
2198 struct ndmsg *ndm;
1690be63 2199 struct nlattr *tb[NDA_MAX+1];
77162022
JF		 2200 struct net_device *dev;
2201 int err = -EINVAL;
2202 __u8 *addr;
2203
1141a455 2204 if (!netlink_capable(skb, CAP_NET_ADMIN))
1690be63
VY		 2205 return -EPERM;
2206
2207 err = nlmsg_parse(nlh, sizeof(*ndm), tb, NDA_MAX, NULL);
2208 if (err < 0)
2209 return err;
77162022
JF		 2210
2211 ndm = nlmsg_data(nlh);
2212 if (ndm->ndm_ifindex == 0) {
2213 pr_info("PF_BRIDGE: RTM_DELNEIGH with invalid ifindex\n");
2214 return -EINVAL;
2215 }
2216
2217 dev = __dev_get_by_index(net, ndm->ndm_ifindex);
2218 if (dev == NULL) {
2219 pr_info("PF_BRIDGE: RTM_DELNEIGH with unknown ifindex\n");
2220 return -ENODEV;
2221 }
2222
1690be63
VY		 2223 if (!tb[NDA_LLADDR] || nla_len(tb[NDA_LLADDR]) != ETH_ALEN) {
2224 pr_info("PF_BRIDGE: RTM_DELNEIGH with invalid address\n");
2225 return -EINVAL;
2226 }
2227
2228 addr = nla_data(tb[NDA_LLADDR]);
37fe0660 2229 if (is_zero_ether_addr(addr)) {
1690be63 2230 pr_info("PF_BRIDGE: RTM_DELNEIGH with invalid ether address\n");
77162022
JF		 2231 return -EINVAL;
2232 }
2233
77162022
JF		 2234 err = -EOPNOTSUPP;
2235
2236 /* Support fdb on master device the net/bridge default case */
2237 if ((!ndm->ndm_flags || ndm->ndm_flags & NTF_MASTER) &&
2238 (dev->priv_flags & IFF_BRIDGE_PORT)) {
898e5061
JP		 2239 struct net_device *br_dev = netdev_master_upper_dev_get(dev);
2240 const struct net_device_ops *ops = br_dev->netdev_ops;
77162022 2241
898e5061 2242 if (ops->ndo_fdb_del)
1690be63 2243 err = ops->ndo_fdb_del(ndm, tb, dev, addr);
77162022
JF		 2244
2245 if (err)
2246 goto out;
2247 else
2248 ndm->ndm_flags &= ~NTF_MASTER;
2249 }
2250
2251 /* Embedded bridge, macvlan, and any other device support */
090096bf
VY		 2252 if (ndm->ndm_flags & NTF_SELF) {
2253 if (dev->netdev_ops->ndo_fdb_del)
2254 err = dev->netdev_ops->ndo_fdb_del(ndm, tb, dev, addr);
2255 else
2256 err = ndo_dflt_fdb_del(ndm, tb, dev, addr);
77162022 2257
3ff661c3
JF		 2258 if (!err) {
2259 rtnl_fdb_notify(dev, addr, RTM_DELNEIGH);
77162022 2260 ndm->ndm_flags &= ~NTF_SELF;
3ff661c3 2261 }
77162022
JF		 2262 }
2263out:
2264 return err;
2265}
2266
d83b0603
JF		 2267static int nlmsg_populate_fdb(struct sk_buff *skb,
2268 struct netlink_callback *cb,
2269 struct net_device *dev,
2270 int *idx,
2271 struct netdev_hw_addr_list *list)
2272{
2273 struct netdev_hw_addr *ha;
2274 int err;
15e47304 2275 u32 portid, seq;
d83b0603 2276
15e47304 2277 portid = NETLINK_CB(cb->skb).portid;
d83b0603
JF		 2278 seq = cb->nlh->nlmsg_seq;
2279
2280 list_for_each_entry(ha, &list->list, list) {
2281 if (*idx < cb->args[0])
2282 goto skip;
2283
2284 err = nlmsg_populate_fdb_fill(skb, dev, ha->addr,
a7a558fe 2285 portid, seq,
c0669e49
ND		 2286 RTM_NEWNEIGH, NTF_SELF,
2287 NLM_F_MULTI);
d83b0603
JF		 2288 if (err < 0)
2289 return err;
2290skip:
2291 *idx += 1;
2292 }
2293 return 0;
2294}
2295
2296/**
2c53040f 2297 * ndo_dflt_fdb_dump - default netdevice operation to dump an FDB table.
d83b0603
JF		 2298 * @nlh: netlink message header
2299 * @dev: netdevice
2300 *
2301 * Default netdevice operation to dump the existing unicast address list.
91f3e7b1 2302 * Returns number of addresses from list put in skb.
d83b0603
JF		 2303 */
2304int ndo_dflt_fdb_dump(struct sk_buff *skb,
2305 struct netlink_callback *cb,
2306 struct net_device *dev,
2307 int idx)
2308{
2309 int err;
2310
2311 netif_addr_lock_bh(dev);
2312 err = nlmsg_populate_fdb(skb, cb, dev, &idx, &dev->uc);
2313 if (err)
2314 goto out;
2315 nlmsg_populate_fdb(skb, cb, dev, &idx, &dev->mc);
2316out:
2317 netif_addr_unlock_bh(dev);
2318 return idx;
2319}
2320EXPORT_SYMBOL(ndo_dflt_fdb_dump);
2321
77162022
JF		 2322static int rtnl_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb)
2323{
2324 int idx = 0;
2325 struct net *net = sock_net(skb->sk);
2326 struct net_device *dev;
2327
2328 rcu_read_lock();
2329 for_each_netdev_rcu(net, dev) {
2330 if (dev->priv_flags & IFF_BRIDGE_PORT) {
898e5061
JP		 2331 struct net_device *br_dev;
2332 const struct net_device_ops *ops;
77162022 2333
898e5061
JP		 2334 br_dev = netdev_master_upper_dev_get(dev);
2335 ops = br_dev->netdev_ops;
77162022
JF		 2336 if (ops->ndo_fdb_dump)
2337 idx = ops->ndo_fdb_dump(skb, cb, dev, idx);
2338 }
2339
2340 if (dev->netdev_ops->ndo_fdb_dump)
2341 idx = dev->netdev_ops->ndo_fdb_dump(skb, cb, dev, idx);
090096bf 2342 else
91f3e7b1 2343 idx = ndo_dflt_fdb_dump(skb, cb, dev, idx);
77162022
JF		 2344 }
2345 rcu_read_unlock();
2346
2347 cb->args[0] = idx;
2348 return skb->len;
2349}
2350
815cccbf
JF		 2351int ndo_dflt_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
2352 struct net_device *dev, u16 mode)
2353{
2354 struct nlmsghdr *nlh;
2355 struct ifinfomsg *ifm;
2356 struct nlattr *br_afspec;
2357 u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN;
898e5061 2358 struct net_device *br_dev = netdev_master_upper_dev_get(dev);
815cccbf
JF		 2359
2360 nlh = nlmsg_put(skb, pid, seq, RTM_NEWLINK, sizeof(*ifm), NLM_F_MULTI);
2361 if (nlh == NULL)
2362 return -EMSGSIZE;
2363
2364 ifm = nlmsg_data(nlh);
2365 ifm->ifi_family = AF_BRIDGE;
2366 ifm->__ifi_pad = 0;
2367 ifm->ifi_type = dev->type;
2368 ifm->ifi_index = dev->ifindex;
2369 ifm->ifi_flags = dev_get_flags(dev);
2370 ifm->ifi_change = 0;
2371
2372
2373 if (nla_put_string(skb, IFLA_IFNAME, dev->name) ||
2374 nla_put_u32(skb, IFLA_MTU, dev->mtu) ||
2375 nla_put_u8(skb, IFLA_OPERSTATE, operstate) ||
898e5061
JP		 2376 (br_dev &&
2377 nla_put_u32(skb, IFLA_MASTER, br_dev->ifindex)) ||
815cccbf
JF		 2378 (dev->addr_len &&
2379 nla_put(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr)) ||
2380 (dev->ifindex != dev->iflink &&
2381 nla_put_u32(skb, IFLA_LINK, dev->iflink)))
2382 goto nla_put_failure;
2383
2384 br_afspec = nla_nest_start(skb, IFLA_AF_SPEC);
2385 if (!br_afspec)
2386 goto nla_put_failure;
2387
2388 if (nla_put_u16(skb, IFLA_BRIDGE_FLAGS, BRIDGE_FLAGS_SELF) ||
2389 nla_put_u16(skb, IFLA_BRIDGE_MODE, mode)) {
2390 nla_nest_cancel(skb, br_afspec);
2391 goto nla_put_failure;
2392 }
2393 nla_nest_end(skb, br_afspec);
2394
2395 return nlmsg_end(skb, nlh);
2396nla_put_failure:
2397 nlmsg_cancel(skb, nlh);
2398 return -EMSGSIZE;
2399}
2400EXPORT_SYMBOL(ndo_dflt_bridge_getlink);
2401
e5a55a89
JF		 2402static int rtnl_bridge_getlink(struct sk_buff *skb, struct netlink_callback *cb)
2403{
2404 struct net *net = sock_net(skb->sk);
2405 struct net_device *dev;
2406 int idx = 0;
2407 u32 portid = NETLINK_CB(cb->skb).portid;
2408 u32 seq = cb->nlh->nlmsg_seq;
6cbdceeb
VY		 2409 struct nlattr *extfilt;
2410 u32 filter_mask = 0;
2411
f784dbb9 2412 extfilt = nlmsg_find_attr(cb->nlh, sizeof(struct ifinfomsg),
6cbdceeb
VY		 2413 IFLA_EXT_MASK);
2414 if (extfilt)
2415 filter_mask = nla_get_u32(extfilt);
e5a55a89
JF		 2416
2417 rcu_read_lock();
2418 for_each_netdev_rcu(net, dev) {
2419 const struct net_device_ops *ops = dev->netdev_ops;
898e5061 2420 struct net_device *br_dev = netdev_master_upper_dev_get(dev);
e5a55a89 2421
898e5061 2422 if (br_dev && br_dev->netdev_ops->ndo_bridge_getlink) {
25b1e679 2423 if (idx >= cb->args[0] &&
898e5061 2424 br_dev->netdev_ops->ndo_bridge_getlink(
6cbdceeb 2425 skb, portid, seq, dev, filter_mask) < 0)
e5a55a89 2426 break;
25b1e679 2427 idx++;
e5a55a89
JF		 2428 }
2429
2430 if (ops->ndo_bridge_getlink) {
25b1e679 2431 if (idx >= cb->args[0] &&
6cbdceeb
VY		 2432 ops->ndo_bridge_getlink(skb, portid, seq, dev,
2433 filter_mask) < 0)
e5a55a89 2434 break;
25b1e679 2435 idx++;
e5a55a89
JF		 2436 }
2437 }
2438 rcu_read_unlock();
2439 cb->args[0] = idx;
2440
2441 return skb->len;
2442}
2443
2469ffd7
JF		 2444static inline size_t bridge_nlmsg_size(void)
2445{
2446 return NLMSG_ALIGN(sizeof(struct ifinfomsg))
2447 + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */
2448 + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */
2449 + nla_total_size(sizeof(u32)) /* IFLA_MASTER */
2450 + nla_total_size(sizeof(u32)) /* IFLA_MTU */
2451 + nla_total_size(sizeof(u32)) /* IFLA_LINK */
2452 + nla_total_size(sizeof(u32)) /* IFLA_OPERSTATE */
2453 + nla_total_size(sizeof(u8)) /* IFLA_PROTINFO */
2454 + nla_total_size(sizeof(struct nlattr)) /* IFLA_AF_SPEC */
2455 + nla_total_size(sizeof(u16)) /* IFLA_BRIDGE_FLAGS */
2456 + nla_total_size(sizeof(u16)); /* IFLA_BRIDGE_MODE */
2457}
2458
2459static int rtnl_bridge_notify(struct net_device *dev, u16 flags)
2460{
2461 struct net *net = dev_net(dev);
898e5061 2462 struct net_device *br_dev = netdev_master_upper_dev_get(dev);
2469ffd7
JF		 2463 struct sk_buff *skb;
2464 int err = -EOPNOTSUPP;
2465
2466 skb = nlmsg_new(bridge_nlmsg_size(), GFP_ATOMIC);
2467 if (!skb) {
2468 err = -ENOMEM;
2469 goto errout;
2470 }
2471
c38e01b8 2472 if ((!flags || (flags & BRIDGE_FLAGS_MASTER)) &&
898e5061 2473 br_dev && br_dev->netdev_ops->ndo_bridge_getlink) {
6cbdceeb 2474 err = br_dev->netdev_ops->ndo_bridge_getlink(skb, 0, 0, dev, 0);
c38e01b8
JF		 2475 if (err < 0)
2476 goto errout;
2477 }
2469ffd7 2478
c38e01b8
JF		 2479 if ((flags & BRIDGE_FLAGS_SELF) &&
2480 dev->netdev_ops->ndo_bridge_getlink) {
6cbdceeb 2481 err = dev->netdev_ops->ndo_bridge_getlink(skb, 0, 0, dev, 0);
c38e01b8
JF		 2482 if (err < 0)
2483 goto errout;
2484 }
2469ffd7 2485
b4faf21b
RP		 2486 if (!skb->len)
2487 goto errout;
2488
2469ffd7
JF		 2489 rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_ATOMIC);
2490 return 0;
2491errout:
2492 WARN_ON(err == -EMSGSIZE);
2493 kfree_skb(skb);
b4faf21b
RP		 2494 if (err)
2495 rtnl_set_sk_err(net, RTNLGRP_LINK, err);
2469ffd7
JF		 2496 return err;
2497}
2498
661d2967 2499static int rtnl_bridge_setlink(struct sk_buff *skb, struct nlmsghdr *nlh)
e5a55a89
JF		 2500{
2501 struct net *net = sock_net(skb->sk);
2502 struct ifinfomsg *ifm;
2503 struct net_device *dev;
2469ffd7
JF		 2504 struct nlattr *br_spec, *attr = NULL;
2505 int rem, err = -EOPNOTSUPP;
c38e01b8
JF		 2506 u16 oflags, flags = 0;
2507 bool have_flags = false;
e5a55a89
JF		 2508
2509 if (nlmsg_len(nlh) < sizeof(*ifm))
2510 return -EINVAL;
2511
2512 ifm = nlmsg_data(nlh);
2513 if (ifm->ifi_family != AF_BRIDGE)
2514 return -EPFNOSUPPORT;
2515
2516 dev = __dev_get_by_index(net, ifm->ifi_index);
2517 if (!dev) {
2518 pr_info("PF_BRIDGE: RTM_SETLINK with unknown ifindex\n");
2519 return -ENODEV;
2520 }
2521
2469ffd7
JF		 2522 br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
2523 if (br_spec) {
2524 nla_for_each_nested(attr, br_spec, rem) {
2525 if (nla_type(attr) == IFLA_BRIDGE_FLAGS) {
c38e01b8 2526 have_flags = true;
2469ffd7
JF		 2527 flags = nla_get_u16(attr);
2528 break;
2529 }
2530 }
2531 }
2532
c38e01b8
JF		 2533 oflags = flags;
2534
2469ffd7 2535 if (!flags || (flags & BRIDGE_FLAGS_MASTER)) {
898e5061
JP		 2536 struct net_device *br_dev = netdev_master_upper_dev_get(dev);
2537
2538 if (!br_dev || !br_dev->netdev_ops->ndo_bridge_setlink) {
2469ffd7
JF		 2539 err = -EOPNOTSUPP;
2540 goto out;
2541 }
2542
898e5061 2543 err = br_dev->netdev_ops->ndo_bridge_setlink(dev, nlh);
e5a55a89
JF		 2544 if (err)
2545 goto out;
2469ffd7
JF		 2546
2547 flags &= ~BRIDGE_FLAGS_MASTER;
e5a55a89
JF		 2548 }
2549
2469ffd7
JF		 2550 if ((flags & BRIDGE_FLAGS_SELF)) {
2551 if (!dev->netdev_ops->ndo_bridge_setlink)
2552 err = -EOPNOTSUPP;
2553 else
2554 err = dev->netdev_ops->ndo_bridge_setlink(dev, nlh);
2555
2556 if (!err)
2557 flags &= ~BRIDGE_FLAGS_SELF;
2558 }
e5a55a89 2559
c38e01b8 2560 if (have_flags)
2469ffd7
JF		 2561 memcpy(nla_data(attr), &flags, sizeof(flags));
2562 /* Generate event to notify upper layer of bridge change */
2563 if (!err)
c38e01b8 2564 err = rtnl_bridge_notify(dev, oflags);
e5a55a89
JF		 2565out:
2566 return err;
2567}
2568
661d2967 2569static int rtnl_bridge_dellink(struct sk_buff *skb, struct nlmsghdr *nlh)
407af329
VY		 2570{
2571 struct net *net = sock_net(skb->sk);
2572 struct ifinfomsg *ifm;
2573 struct net_device *dev;
2574 struct nlattr *br_spec, *attr = NULL;
2575 int rem, err = -EOPNOTSUPP;
2576 u16 oflags, flags = 0;
2577 bool have_flags = false;
2578
2579 if (nlmsg_len(nlh) < sizeof(*ifm))
2580 return -EINVAL;
2581
2582 ifm = nlmsg_data(nlh);
2583 if (ifm->ifi_family != AF_BRIDGE)
2584 return -EPFNOSUPPORT;
2585
2586 dev = __dev_get_by_index(net, ifm->ifi_index);
2587 if (!dev) {
2588 pr_info("PF_BRIDGE: RTM_SETLINK with unknown ifindex\n");
2589 return -ENODEV;
2590 }
2591
2592 br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC);
2593 if (br_spec) {
2594 nla_for_each_nested(attr, br_spec, rem) {
2595 if (nla_type(attr) == IFLA_BRIDGE_FLAGS) {
2596 have_flags = true;
2597 flags = nla_get_u16(attr);
2598 break;
2599 }
2600 }
2601 }
2602
2603 oflags = flags;
2604
2605 if (!flags || (flags & BRIDGE_FLAGS_MASTER)) {
2606 struct net_device *br_dev = netdev_master_upper_dev_get(dev);
2607
2608 if (!br_dev || !br_dev->netdev_ops->ndo_bridge_dellink) {
2609 err = -EOPNOTSUPP;
2610 goto out;
2611 }
2612
2613 err = br_dev->netdev_ops->ndo_bridge_dellink(dev, nlh);
2614 if (err)
2615 goto out;
2616
2617 flags &= ~BRIDGE_FLAGS_MASTER;
2618 }
2619
2620 if ((flags & BRIDGE_FLAGS_SELF)) {
2621 if (!dev->netdev_ops->ndo_bridge_dellink)
2622 err = -EOPNOTSUPP;
2623 else
2624 err = dev->netdev_ops->ndo_bridge_dellink(dev, nlh);
2625
2626 if (!err)
2627 flags &= ~BRIDGE_FLAGS_SELF;
2628 }
2629
2630 if (have_flags)
2631 memcpy(nla_data(attr), &flags, sizeof(flags));
2632 /* Generate event to notify upper layer of bridge change */
2633 if (!err)
2634 err = rtnl_bridge_notify(dev, oflags);
2635out:
2636 return err;
2637}
2638
1da177e4
LT		 2639/* Process one rtnetlink message. */
2640
1d00a4eb 2641static int rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
1da177e4 2642{
3b1e0a65 2643 struct net *net = sock_net(skb->sk);
e2849863 2644 rtnl_doit_func doit;
1da177e4 2645 int sz_idx, kind;
1da177e4
LT		 2646 int family;
2647 int type;
2907c35f 2648 int err;
1da177e4 2649
1da177e4 2650 type = nlh->nlmsg_type;
1da177e4 2651 if (type > RTM_MAX)
038890fe 2652 return -EOPNOTSUPP;
1da177e4
LT		 2653
2654 type -= RTM_BASE;
2655
2656 /* All the messages must have at least 1 byte length */
573ce260 2657 if (nlmsg_len(nlh) < sizeof(struct rtgenmsg))
1da177e4
LT		 2658 return 0;
2659
573ce260 2660 family = ((struct rtgenmsg *)nlmsg_data(nlh))->rtgen_family;
1da177e4
LT		 2661 sz_idx = type>>2;
2662 kind = type&3;
2663
1141a455 2664 if (kind != 2 && !netlink_net_capable(skb, CAP_NET_ADMIN))
1d00a4eb 2665 return -EPERM;
1da177e4 2666
b8f3ab42 2667 if (kind == 2 && nlh->nlmsg_flags&NLM_F_DUMP) {
97c53cac 2668 struct sock *rtnl;
e2849863 2669 rtnl_dumpit_func dumpit;
c7ac8679
GR		 2670 rtnl_calcit_func calcit;
2671 u16 min_dump_alloc = 0;
1da177e4 2672
e2849863
TG		 2673 dumpit = rtnl_get_dumpit(family, type);
2674 if (dumpit == NULL)
038890fe 2675 return -EOPNOTSUPP;
c7ac8679
GR		 2676 calcit = rtnl_get_calcit(family, type);
2677 if (calcit)
115c9b81 2678 min_dump_alloc = calcit(skb, nlh);
9ac4a169 2679
2907c35f 2680 __rtnl_unlock();
97c53cac 2681 rtnl = net->rtnl;
80d326fa
PNA		 2682 {
2683 struct netlink_dump_control c = {
2684 .dump = dumpit,
2685 .min_dump_alloc = min_dump_alloc,
2686 };
2687 err = netlink_dump_start(rtnl, skb, nlh, &c);
2688 }
2907c35f
ED		 2689 rtnl_lock();
2690 return err;
1da177e4
LT		 2691 }
2692
e2849863
TG		 2693 doit = rtnl_get_doit(family, type);
2694 if (doit == NULL)
038890fe 2695 return -EOPNOTSUPP;
1da177e4 2696
661d2967 2697 return doit(skb, nlh);
1da177e4
LT		 2698}
2699
cd40b7d3 2700static void rtnetlink_rcv(struct sk_buff *skb)
1da177e4 2701{
cd40b7d3
DL		 2702 rtnl_lock();
2703 netlink_rcv_skb(skb, &rtnetlink_rcv_msg);
2704 rtnl_unlock();
1da177e4
LT		 2705}
2706
1da177e4
LT		 2707static int rtnetlink_event(struct notifier_block *this, unsigned long event, void *ptr)
2708{
2709 struct net_device *dev = ptr;
e9dc8653 2710
1da177e4 2711 switch (event) {
1da177e4
LT		 2712 case NETDEV_UP:
2713 case NETDEV_DOWN:
10de05af 2714 case NETDEV_PRE_UP:
d90a909e
EB		 2715 case NETDEV_POST_INIT:
2716 case NETDEV_REGISTER:
1da177e4 2717 case NETDEV_CHANGE:
755d0e77 2718 case NETDEV_PRE_TYPE_CHANGE:
1da177e4 2719 case NETDEV_GOING_DOWN:
a2835763 2720 case NETDEV_UNREGISTER:
0115e8e3 2721 case NETDEV_UNREGISTER_FINAL:
ac3d3f81
AW		 2722 case NETDEV_RELEASE:
2723 case NETDEV_JOIN:
1da177e4
LT		 2724 break;
2725 default:
2726 rtmsg_ifinfo(RTM_NEWLINK, dev, 0);
2727 break;
2728 }
2729 return NOTIFY_DONE;
2730}
2731
2732static struct notifier_block rtnetlink_dev_notifier = {
2733 .notifier_call = rtnetlink_event,
2734};
2735
97c53cac 2736
2c8c1e72 2737static int __net_init rtnetlink_net_init(struct net *net)
97c53cac
DL		 2738{
2739 struct sock *sk;
a31f2d17
PNA		 2740 struct netlink_kernel_cfg cfg = {
2741 .groups = RTNLGRP_MAX,
2742 .input = rtnetlink_rcv,
2743 .cb_mutex = &rtnl_mutex,
9785e10a 2744 .flags = NL_CFG_F_NONROOT_RECV,
a31f2d17
PNA		 2745 };
2746
9f00d977 2747 sk = netlink_kernel_create(net, NETLINK_ROUTE, &cfg);
97c53cac
DL		 2748 if (!sk)
2749 return -ENOMEM;
97c53cac
DL		 2750 net->rtnl = sk;
2751 return 0;
2752}
2753
2c8c1e72 2754static void __net_exit rtnetlink_net_exit(struct net *net)
97c53cac 2755{
775516bf
DL		 2756 netlink_kernel_release(net->rtnl);
2757 net->rtnl = NULL;
97c53cac
DL		 2758}
2759
2760static struct pernet_operations rtnetlink_net_ops = {
2761 .init = rtnetlink_net_init,
2762 .exit = rtnetlink_net_exit,
2763};
2764
1da177e4
LT		 2765void __init rtnetlink_init(void)
2766{
97c53cac 2767 if (register_pernet_subsys(&rtnetlink_net_ops))
1da177e4 2768 panic("rtnetlink_init: cannot initialize rtnetlink\n");
97c53cac 2769
1da177e4 2770 register_netdevice_notifier(&rtnetlink_dev_notifier);
340d17fc 2771
c7ac8679
GR		 2772 rtnl_register(PF_UNSPEC, RTM_GETLINK, rtnl_getlink,
2773 rtnl_dump_ifinfo, rtnl_calcit);
2774 rtnl_register(PF_UNSPEC, RTM_SETLINK, rtnl_setlink, NULL, NULL);
2775 rtnl_register(PF_UNSPEC, RTM_NEWLINK, rtnl_newlink, NULL, NULL);
2776 rtnl_register(PF_UNSPEC, RTM_DELLINK, rtnl_dellink, NULL, NULL);
687ad8cc 2777
c7ac8679
GR		 2778 rtnl_register(PF_UNSPEC, RTM_GETADDR, NULL, rtnl_dump_all, NULL);
2779 rtnl_register(PF_UNSPEC, RTM_GETROUTE, NULL, rtnl_dump_all, NULL);
77162022
JF		 2780
2781 rtnl_register(PF_BRIDGE, RTM_NEWNEIGH, rtnl_fdb_add, NULL, NULL);
2782 rtnl_register(PF_BRIDGE, RTM_DELNEIGH, rtnl_fdb_del, NULL, NULL);
2783 rtnl_register(PF_BRIDGE, RTM_GETNEIGH, NULL, rtnl_fdb_dump, NULL);
e5a55a89
JF		 2784
2785 rtnl_register(PF_BRIDGE, RTM_GETLINK, NULL, rtnl_bridge_getlink, NULL);
407af329 2786 rtnl_register(PF_BRIDGE, RTM_DELLINK, rtnl_bridge_dellink, NULL, NULL);
e5a55a89 2787 rtnl_register(PF_BRIDGE, RTM_SETLINK, rtnl_bridge_setlink, NULL, NULL);
1da177e4
LT		 2788}
2789
kernel source for telekom puls (alcatel/mediatek)