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Staging: hv: hv_mouse: use a real struct hid_descriptor
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / net / core / rtnetlink.c
blob2d65c6bb24c10e8734d7e0ee93644c2cd3298b45
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
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>
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>
36 #include <linux/mutex.h>
37 #include <linux/if_addr.h>
38 #include <linux/pci.h>
39
40 #include <asm/uaccess.h>
41 #include <asm/system.h>
42
43 #include <linux/inet.h>
44 #include <linux/netdevice.h>
45 #include <net/ip.h>
46 #include <net/protocol.h>
47 #include <net/arp.h>
48 #include <net/route.h>
49 #include <net/udp.h>
50 #include <net/sock.h>
51 #include <net/pkt_sched.h>
52 #include <net/fib_rules.h>
53 #include <net/rtnetlink.h>
54 #include <net/net_namespace.h>
55
56 struct rtnl_link {
57 rtnl_doit_func doit;
58 rtnl_dumpit_func dumpit;
59 };
60
61 static DEFINE_MUTEX(rtnl_mutex);
62
63 void rtnl_lock(void)
64 {
65 mutex_lock(&rtnl_mutex);
66 }
67 EXPORT_SYMBOL(rtnl_lock);
68
69 void __rtnl_unlock(void)
70 {
71 mutex_unlock(&rtnl_mutex);
72 }
73
74 void rtnl_unlock(void)
75 {
76 /* This fellow will unlock it for us. */
77 netdev_run_todo();
78 }
79 EXPORT_SYMBOL(rtnl_unlock);
80
81 int rtnl_trylock(void)
82 {
83 return mutex_trylock(&rtnl_mutex);
84 }
85 EXPORT_SYMBOL(rtnl_trylock);
86
87 int rtnl_is_locked(void)
88 {
89 return mutex_is_locked(&rtnl_mutex);
90 }
91 EXPORT_SYMBOL(rtnl_is_locked);
92
93 #ifdef CONFIG_PROVE_LOCKING
94 int lockdep_rtnl_is_held(void)
95 {
96 return lockdep_is_held(&rtnl_mutex);
97 }
98 EXPORT_SYMBOL(lockdep_rtnl_is_held);
99 #endif /* #ifdef CONFIG_PROVE_LOCKING */
100
101 static struct rtnl_link *rtnl_msg_handlers[RTNL_FAMILY_MAX + 1];
102
103 static inline int rtm_msgindex(int msgtype)
104 {
105 int msgindex = msgtype - RTM_BASE;
106
107 /*
108 * msgindex < 0 implies someone tried to register a netlink
109 * control code. msgindex >= RTM_NR_MSGTYPES may indicate that
110 * the message type has not been added to linux/rtnetlink.h
111 */
112 BUG_ON(msgindex < 0 || msgindex >= RTM_NR_MSGTYPES);
113
114 return msgindex;
115 }
116
117 static rtnl_doit_func rtnl_get_doit(int protocol, int msgindex)
118 {
119 struct rtnl_link *tab;
120
121 if (protocol <= RTNL_FAMILY_MAX)
122 tab = rtnl_msg_handlers[protocol];
123 else
124 tab = NULL;
125
126 if (tab == NULL || tab[msgindex].doit == NULL)
127 tab = rtnl_msg_handlers[PF_UNSPEC];
128
129 return tab ? tab[msgindex].doit : NULL;
130 }
131
132 static rtnl_dumpit_func rtnl_get_dumpit(int protocol, int msgindex)
133 {
134 struct rtnl_link *tab;
135
136 if (protocol <= RTNL_FAMILY_MAX)
137 tab = rtnl_msg_handlers[protocol];
138 else
139 tab = NULL;
140
141 if (tab == NULL || tab[msgindex].dumpit == NULL)
142 tab = rtnl_msg_handlers[PF_UNSPEC];
143
144 return tab ? tab[msgindex].dumpit : NULL;
145 }
146
147 /**
148 * __rtnl_register - Register a rtnetlink message type
149 * @protocol: Protocol family or PF_UNSPEC
150 * @msgtype: rtnetlink message type
151 * @doit: Function pointer called for each request message
152 * @dumpit: Function pointer called for each dump request (NLM_F_DUMP) message
153 *
154 * Registers the specified function pointers (at least one of them has
155 * to be non-NULL) to be called whenever a request message for the
156 * specified protocol family and message type is received.
157 *
158 * The special protocol family PF_UNSPEC may be used to define fallback
159 * function pointers for the case when no entry for the specific protocol
160 * family exists.
161 *
162 * Returns 0 on success or a negative error code.
163 */
164 int __rtnl_register(int protocol, int msgtype,
165 rtnl_doit_func doit, rtnl_dumpit_func dumpit)
166 {
167 struct rtnl_link *tab;
168 int msgindex;
169
170 BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX);
171 msgindex = rtm_msgindex(msgtype);
172
173 tab = rtnl_msg_handlers[protocol];
174 if (tab == NULL) {
175 tab = kcalloc(RTM_NR_MSGTYPES, sizeof(*tab), GFP_KERNEL);
176 if (tab == NULL)
177 return -ENOBUFS;
178
179 rtnl_msg_handlers[protocol] = tab;
180 }
181
182 if (doit)
183 tab[msgindex].doit = doit;
184
185 if (dumpit)
186 tab[msgindex].dumpit = dumpit;
187
188 return 0;
189 }
190 EXPORT_SYMBOL_GPL(__rtnl_register);
191
192 /**
193 * rtnl_register - Register a rtnetlink message type
194 *
195 * Identical to __rtnl_register() but panics on failure. This is useful
196 * as failure of this function is very unlikely, it can only happen due
197 * to lack of memory when allocating the chain to store all message
198 * handlers for a protocol. Meant for use in init functions where lack
199 * of memory implies no sense in continueing.
200 */
201 void rtnl_register(int protocol, int msgtype,
202 rtnl_doit_func doit, rtnl_dumpit_func dumpit)
203 {
204 if (__rtnl_register(protocol, msgtype, doit, dumpit) < 0)
205 panic("Unable to register rtnetlink message handler, "
206 "protocol = %d, message type = %d\n",
207 protocol, msgtype);
208 }
209 EXPORT_SYMBOL_GPL(rtnl_register);
210
211 /**
212 * rtnl_unregister - Unregister a rtnetlink message type
213 * @protocol: Protocol family or PF_UNSPEC
214 * @msgtype: rtnetlink message type
215 *
216 * Returns 0 on success or a negative error code.
217 */
218 int rtnl_unregister(int protocol, int msgtype)
219 {
220 int msgindex;
221
222 BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX);
223 msgindex = rtm_msgindex(msgtype);
224
225 if (rtnl_msg_handlers[protocol] == NULL)
226 return -ENOENT;
227
228 rtnl_msg_handlers[protocol][msgindex].doit = NULL;
229 rtnl_msg_handlers[protocol][msgindex].dumpit = NULL;
230
231 return 0;
232 }
233 EXPORT_SYMBOL_GPL(rtnl_unregister);
234
235 /**
236 * rtnl_unregister_all - Unregister all rtnetlink message type of a protocol
237 * @protocol : Protocol family or PF_UNSPEC
238 *
239 * Identical to calling rtnl_unregster() for all registered message types
240 * of a certain protocol family.
241 */
242 void rtnl_unregister_all(int protocol)
243 {
244 BUG_ON(protocol < 0 || protocol > RTNL_FAMILY_MAX);
245
246 kfree(rtnl_msg_handlers[protocol]);
247 rtnl_msg_handlers[protocol] = NULL;
248 }
249 EXPORT_SYMBOL_GPL(rtnl_unregister_all);
250
251 static LIST_HEAD(link_ops);
252
253 /**
254 * __rtnl_link_register - Register rtnl_link_ops with rtnetlink.
255 * @ops: struct rtnl_link_ops * to register
256 *
257 * The caller must hold the rtnl_mutex. This function should be used
258 * by drivers that create devices during module initialization. It
259 * must be called before registering the devices.
260 *
261 * Returns 0 on success or a negative error code.
262 */
263 int __rtnl_link_register(struct rtnl_link_ops *ops)
264 {
265 if (!ops->dellink)
266 ops->dellink = unregister_netdevice_queue;
267
268 list_add_tail(&ops->list, &link_ops);
269 return 0;
270 }
271 EXPORT_SYMBOL_GPL(__rtnl_link_register);
272
273 /**
274 * rtnl_link_register - Register rtnl_link_ops with rtnetlink.
275 * @ops: struct rtnl_link_ops * to register
276 *
277 * Returns 0 on success or a negative error code.
278 */
279 int rtnl_link_register(struct rtnl_link_ops *ops)
280 {
281 int err;
282
283 rtnl_lock();
284 err = __rtnl_link_register(ops);
285 rtnl_unlock();
286 return err;
287 }
288 EXPORT_SYMBOL_GPL(rtnl_link_register);
289
290 static void __rtnl_kill_links(struct net *net, struct rtnl_link_ops *ops)
291 {
292 struct net_device *dev;
293 LIST_HEAD(list_kill);
294
295 for_each_netdev(net, dev) {
296 if (dev->rtnl_link_ops == ops)
297 ops->dellink(dev, &list_kill);
298 }
299 unregister_netdevice_many(&list_kill);
300 }
301
302 /**
303 * __rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink.
304 * @ops: struct rtnl_link_ops * to unregister
305 *
306 * The caller must hold the rtnl_mutex.
307 */
308 void __rtnl_link_unregister(struct rtnl_link_ops *ops)
309 {
310 struct net *net;
311
312 for_each_net(net) {
313 __rtnl_kill_links(net, ops);
314 }
315 list_del(&ops->list);
316 }
317 EXPORT_SYMBOL_GPL(__rtnl_link_unregister);
318
319 /**
320 * rtnl_link_unregister - Unregister rtnl_link_ops from rtnetlink.
321 * @ops: struct rtnl_link_ops * to unregister
322 */
323 void rtnl_link_unregister(struct rtnl_link_ops *ops)
324 {
325 rtnl_lock();
326 __rtnl_link_unregister(ops);
327 rtnl_unlock();
328 }
329 EXPORT_SYMBOL_GPL(rtnl_link_unregister);
330
331 static const struct rtnl_link_ops *rtnl_link_ops_get(const char *kind)
332 {
333 const struct rtnl_link_ops *ops;
334
335 list_for_each_entry(ops, &link_ops, list) {
336 if (!strcmp(ops->kind, kind))
337 return ops;
338 }
339 return NULL;
340 }
341
342 static size_t rtnl_link_get_size(const struct net_device *dev)
343 {
344 const struct rtnl_link_ops *ops = dev->rtnl_link_ops;
345 size_t size;
346
347 if (!ops)
348 return 0;
349
350 size = nla_total_size(sizeof(struct nlattr)) + /* IFLA_LINKINFO */
351 nla_total_size(strlen(ops->kind) + 1); /* IFLA_INFO_KIND */
352
353 if (ops->get_size)
354 /* IFLA_INFO_DATA + nested data */
355 size += nla_total_size(sizeof(struct nlattr)) +
356 ops->get_size(dev);
357
358 if (ops->get_xstats_size)
359 /* IFLA_INFO_XSTATS */
360 size += nla_total_size(ops->get_xstats_size(dev));
361
362 return size;
363 }
364
365 static LIST_HEAD(rtnl_af_ops);
366
367 static const struct rtnl_af_ops *rtnl_af_lookup(const int family)
368 {
369 const struct rtnl_af_ops *ops;
370
371 list_for_each_entry(ops, &rtnl_af_ops, list) {
372 if (ops->family == family)
373 return ops;
374 }
375
376 return NULL;
377 }
378
379 /**
380 * __rtnl_af_register - Register rtnl_af_ops with rtnetlink.
381 * @ops: struct rtnl_af_ops * to register
382 *
383 * The caller must hold the rtnl_mutex.
384 *
385 * Returns 0 on success or a negative error code.
386 */
387 int __rtnl_af_register(struct rtnl_af_ops *ops)
388 {
389 list_add_tail(&ops->list, &rtnl_af_ops);
390 return 0;
391 }
392 EXPORT_SYMBOL_GPL(__rtnl_af_register);
393
394 /**
395 * rtnl_af_register - Register rtnl_af_ops with rtnetlink.
396 * @ops: struct rtnl_af_ops * to register
397 *
398 * Returns 0 on success or a negative error code.
399 */
400 int rtnl_af_register(struct rtnl_af_ops *ops)
401 {
402 int err;
403
404 rtnl_lock();
405 err = __rtnl_af_register(ops);
406 rtnl_unlock();
407 return err;
408 }
409 EXPORT_SYMBOL_GPL(rtnl_af_register);
410
411 /**
412 * __rtnl_af_unregister - Unregister rtnl_af_ops from rtnetlink.
413 * @ops: struct rtnl_af_ops * to unregister
414 *
415 * The caller must hold the rtnl_mutex.
416 */
417 void __rtnl_af_unregister(struct rtnl_af_ops *ops)
418 {
419 list_del(&ops->list);
420 }
421 EXPORT_SYMBOL_GPL(__rtnl_af_unregister);
422
423 /**
424 * rtnl_af_unregister - Unregister rtnl_af_ops from rtnetlink.
425 * @ops: struct rtnl_af_ops * to unregister
426 */
427 void rtnl_af_unregister(struct rtnl_af_ops *ops)
428 {
429 rtnl_lock();
430 __rtnl_af_unregister(ops);
431 rtnl_unlock();
432 }
433 EXPORT_SYMBOL_GPL(rtnl_af_unregister);
434
435 static size_t rtnl_link_get_af_size(const struct net_device *dev)
436 {
437 struct rtnl_af_ops *af_ops;
438 size_t size;
439
440 /* IFLA_AF_SPEC */
441 size = nla_total_size(sizeof(struct nlattr));
442
443 list_for_each_entry(af_ops, &rtnl_af_ops, list) {
444 if (af_ops->get_link_af_size) {
445 /* AF_* + nested data */
446 size += nla_total_size(sizeof(struct nlattr)) +
447 af_ops->get_link_af_size(dev);
448 }
449 }
450
451 return size;
452 }
453
454 static int rtnl_link_fill(struct sk_buff *skb, const struct net_device *dev)
455 {
456 const struct rtnl_link_ops *ops = dev->rtnl_link_ops;
457 struct nlattr *linkinfo, *data;
458 int err = -EMSGSIZE;
459
460 linkinfo = nla_nest_start(skb, IFLA_LINKINFO);
461 if (linkinfo == NULL)
462 goto out;
463
464 if (nla_put_string(skb, IFLA_INFO_KIND, ops->kind) < 0)
465 goto err_cancel_link;
466 if (ops->fill_xstats) {
467 err = ops->fill_xstats(skb, dev);
468 if (err < 0)
469 goto err_cancel_link;
470 }
471 if (ops->fill_info) {
472 data = nla_nest_start(skb, IFLA_INFO_DATA);
473 if (data == NULL)
474 goto err_cancel_link;
475 err = ops->fill_info(skb, dev);
476 if (err < 0)
477 goto err_cancel_data;
478 nla_nest_end(skb, data);
479 }
480
481 nla_nest_end(skb, linkinfo);
482 return 0;
483
484 err_cancel_data:
485 nla_nest_cancel(skb, data);
486 err_cancel_link:
487 nla_nest_cancel(skb, linkinfo);
488 out:
489 return err;
490 }
491
492 static const int rtm_min[RTM_NR_FAMILIES] =
493 {
494 [RTM_FAM(RTM_NEWLINK)] = NLMSG_LENGTH(sizeof(struct ifinfomsg)),
495 [RTM_FAM(RTM_NEWADDR)] = NLMSG_LENGTH(sizeof(struct ifaddrmsg)),
496 [RTM_FAM(RTM_NEWROUTE)] = NLMSG_LENGTH(sizeof(struct rtmsg)),
497 [RTM_FAM(RTM_NEWRULE)] = NLMSG_LENGTH(sizeof(struct fib_rule_hdr)),
498 [RTM_FAM(RTM_NEWQDISC)] = NLMSG_LENGTH(sizeof(struct tcmsg)),
499 [RTM_FAM(RTM_NEWTCLASS)] = NLMSG_LENGTH(sizeof(struct tcmsg)),
500 [RTM_FAM(RTM_NEWTFILTER)] = NLMSG_LENGTH(sizeof(struct tcmsg)),
501 [RTM_FAM(RTM_NEWACTION)] = NLMSG_LENGTH(sizeof(struct tcamsg)),
502 [RTM_FAM(RTM_GETMULTICAST)] = NLMSG_LENGTH(sizeof(struct rtgenmsg)),
503 [RTM_FAM(RTM_GETANYCAST)] = NLMSG_LENGTH(sizeof(struct rtgenmsg)),
504 };
505
506 static const int rta_max[RTM_NR_FAMILIES] =
507 {
508 [RTM_FAM(RTM_NEWLINK)] = IFLA_MAX,
509 [RTM_FAM(RTM_NEWADDR)] = IFA_MAX,
510 [RTM_FAM(RTM_NEWROUTE)] = RTA_MAX,
511 [RTM_FAM(RTM_NEWRULE)] = FRA_MAX,
512 [RTM_FAM(RTM_NEWQDISC)] = TCA_MAX,
513 [RTM_FAM(RTM_NEWTCLASS)] = TCA_MAX,
514 [RTM_FAM(RTM_NEWTFILTER)] = TCA_MAX,
515 [RTM_FAM(RTM_NEWACTION)] = TCAA_MAX,
516 };
517
518 void __rta_fill(struct sk_buff *skb, int attrtype, int attrlen, const void *data)
519 {
520 struct rtattr *rta;
521 int size = RTA_LENGTH(attrlen);
522
523 rta = (struct rtattr *)skb_put(skb, RTA_ALIGN(size));
524 rta->rta_type = attrtype;
525 rta->rta_len = size;
526 memcpy(RTA_DATA(rta), data, attrlen);
527 memset(RTA_DATA(rta) + attrlen, 0, RTA_ALIGN(size) - size);
528 }
529 EXPORT_SYMBOL(__rta_fill);
530
531 int rtnetlink_send(struct sk_buff *skb, struct net *net, u32 pid, unsigned group, int echo)
532 {
533 struct sock *rtnl = net->rtnl;
534 int err = 0;
535
536 NETLINK_CB(skb).dst_group = group;
537 if (echo)
538 atomic_inc(&skb->users);
539 netlink_broadcast(rtnl, skb, pid, group, GFP_KERNEL);
540 if (echo)
541 err = netlink_unicast(rtnl, skb, pid, MSG_DONTWAIT);
542 return err;
543 }
544
545 int rtnl_unicast(struct sk_buff *skb, struct net *net, u32 pid)
546 {
547 struct sock *rtnl = net->rtnl;
548
549 return nlmsg_unicast(rtnl, skb, pid);
550 }
551 EXPORT_SYMBOL(rtnl_unicast);
552
553 void rtnl_notify(struct sk_buff *skb, struct net *net, u32 pid, u32 group,
554 struct nlmsghdr *nlh, gfp_t flags)
555 {
556 struct sock *rtnl = net->rtnl;
557 int report = 0;
558
559 if (nlh)
560 report = nlmsg_report(nlh);
561
562 nlmsg_notify(rtnl, skb, pid, group, report, flags);
563 }
564 EXPORT_SYMBOL(rtnl_notify);
565
566 void rtnl_set_sk_err(struct net *net, u32 group, int error)
567 {
568 struct sock *rtnl = net->rtnl;
569
570 netlink_set_err(rtnl, 0, group, error);
571 }
572 EXPORT_SYMBOL(rtnl_set_sk_err);
573
574 int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics)
575 {
576 struct nlattr *mx;
577 int i, valid = 0;
578
579 mx = nla_nest_start(skb, RTA_METRICS);
580 if (mx == NULL)
581 return -ENOBUFS;
582
583 for (i = 0; i < RTAX_MAX; i++) {
584 if (metrics[i]) {
585 valid++;
586 NLA_PUT_U32(skb, i+1, metrics[i]);
587 }
588 }
589
590 if (!valid) {
591 nla_nest_cancel(skb, mx);
592 return 0;
593 }
594
595 return nla_nest_end(skb, mx);
596
597 nla_put_failure:
598 nla_nest_cancel(skb, mx);
599 return -EMSGSIZE;
600 }
601 EXPORT_SYMBOL(rtnetlink_put_metrics);
602
603 int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst, u32 id,
604 u32 ts, u32 tsage, long expires, u32 error)
605 {
606 struct rta_cacheinfo ci = {
607 .rta_lastuse = jiffies_to_clock_t(jiffies - dst->lastuse),
608 .rta_used = dst->__use,
609 .rta_clntref = atomic_read(&(dst->__refcnt)),
610 .rta_error = error,
611 .rta_id = id,
612 .rta_ts = ts,
613 .rta_tsage = tsage,
614 };
615
616 if (expires)
617 ci.rta_expires = jiffies_to_clock_t(expires);
618
619 return nla_put(skb, RTA_CACHEINFO, sizeof(ci), &ci);
620 }
621 EXPORT_SYMBOL_GPL(rtnl_put_cacheinfo);
622
623 static void set_operstate(struct net_device *dev, unsigned char transition)
624 {
625 unsigned char operstate = dev->operstate;
626
627 switch (transition) {
628 case IF_OPER_UP:
629 if ((operstate == IF_OPER_DORMANT ||
630 operstate == IF_OPER_UNKNOWN) &&
631 !netif_dormant(dev))
632 operstate = IF_OPER_UP;
633 break;
634
635 case IF_OPER_DORMANT:
636 if (operstate == IF_OPER_UP ||
637 operstate == IF_OPER_UNKNOWN)
638 operstate = IF_OPER_DORMANT;
639 break;
640 }
641
642 if (dev->operstate != operstate) {
643 write_lock_bh(&dev_base_lock);
644 dev->operstate = operstate;
645 write_unlock_bh(&dev_base_lock);
646 netdev_state_change(dev);
647 }
648 }
649
650 static unsigned int rtnl_dev_combine_flags(const struct net_device *dev,
651 const struct ifinfomsg *ifm)
652 {
653 unsigned int flags = ifm->ifi_flags;
654
655 /* bugwards compatibility: ifi_change == 0 is treated as ~0 */
656 if (ifm->ifi_change)
657 flags = (flags & ifm->ifi_change) |
658 (dev->flags & ~ifm->ifi_change);
659
660 return flags;
661 }
662
663 static void copy_rtnl_link_stats(struct rtnl_link_stats *a,
664 const struct rtnl_link_stats64 *b)
665 {
666 a->rx_packets = b->rx_packets;
667 a->tx_packets = b->tx_packets;
668 a->rx_bytes = b->rx_bytes;
669 a->tx_bytes = b->tx_bytes;
670 a->rx_errors = b->rx_errors;
671 a->tx_errors = b->tx_errors;
672 a->rx_dropped = b->rx_dropped;
673 a->tx_dropped = b->tx_dropped;
674
675 a->multicast = b->multicast;
676 a->collisions = b->collisions;
677
678 a->rx_length_errors = b->rx_length_errors;
679 a->rx_over_errors = b->rx_over_errors;
680 a->rx_crc_errors = b->rx_crc_errors;
681 a->rx_frame_errors = b->rx_frame_errors;
682 a->rx_fifo_errors = b->rx_fifo_errors;
683 a->rx_missed_errors = b->rx_missed_errors;
684
685 a->tx_aborted_errors = b->tx_aborted_errors;
686 a->tx_carrier_errors = b->tx_carrier_errors;
687 a->tx_fifo_errors = b->tx_fifo_errors;
688 a->tx_heartbeat_errors = b->tx_heartbeat_errors;
689 a->tx_window_errors = b->tx_window_errors;
690
691 a->rx_compressed = b->rx_compressed;
692 a->tx_compressed = b->tx_compressed;
693 }
694
695 static void copy_rtnl_link_stats64(void *v, const struct rtnl_link_stats64 *b)
696 {
697 memcpy(v, b, sizeof(*b));
698 }
699
700 /* All VF info */
701 static inline int rtnl_vfinfo_size(const struct net_device *dev)
702 {
703 if (dev->dev.parent && dev_is_pci(dev->dev.parent)) {
704
705 int num_vfs = dev_num_vf(dev->dev.parent);
706 size_t size = nla_total_size(sizeof(struct nlattr));
707 size += nla_total_size(num_vfs * sizeof(struct nlattr));
708 size += num_vfs *
709 (nla_total_size(sizeof(struct ifla_vf_mac)) +
710 nla_total_size(sizeof(struct ifla_vf_vlan)) +
711 nla_total_size(sizeof(struct ifla_vf_tx_rate)));
712 return size;
713 } else
714 return 0;
715 }
716
717 static size_t rtnl_port_size(const struct net_device *dev)
718 {
719 size_t port_size = nla_total_size(4) /* PORT_VF */
720 + nla_total_size(PORT_PROFILE_MAX) /* PORT_PROFILE */
721 + nla_total_size(sizeof(struct ifla_port_vsi))
722 /* PORT_VSI_TYPE */
723 + nla_total_size(PORT_UUID_MAX) /* PORT_INSTANCE_UUID */
724 + nla_total_size(PORT_UUID_MAX) /* PORT_HOST_UUID */
725 + nla_total_size(1) /* PROT_VDP_REQUEST */
726 + nla_total_size(2); /* PORT_VDP_RESPONSE */
727 size_t vf_ports_size = nla_total_size(sizeof(struct nlattr));
728 size_t vf_port_size = nla_total_size(sizeof(struct nlattr))
729 + port_size;
730 size_t port_self_size = nla_total_size(sizeof(struct nlattr))
731 + port_size;
732
733 if (!dev->netdev_ops->ndo_get_vf_port || !dev->dev.parent)
734 return 0;
735 if (dev_num_vf(dev->dev.parent))
736 return port_self_size + vf_ports_size +
737 vf_port_size * dev_num_vf(dev->dev.parent);
738 else
739 return port_self_size;
740 }
741
742 static noinline size_t if_nlmsg_size(const struct net_device *dev)
743 {
744 return NLMSG_ALIGN(sizeof(struct ifinfomsg))
745 + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */
746 + nla_total_size(IFALIASZ) /* IFLA_IFALIAS */
747 + nla_total_size(IFNAMSIZ) /* IFLA_QDISC */
748 + nla_total_size(sizeof(struct rtnl_link_ifmap))
749 + nla_total_size(sizeof(struct rtnl_link_stats))
750 + nla_total_size(sizeof(struct rtnl_link_stats64))
751 + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */
752 + nla_total_size(MAX_ADDR_LEN) /* IFLA_BROADCAST */
753 + nla_total_size(4) /* IFLA_TXQLEN */
754 + nla_total_size(4) /* IFLA_WEIGHT */
755 + nla_total_size(4) /* IFLA_MTU */
756 + nla_total_size(4) /* IFLA_LINK */
757 + nla_total_size(4) /* IFLA_MASTER */
758 + nla_total_size(1) /* IFLA_OPERSTATE */
759 + nla_total_size(1) /* IFLA_LINKMODE */
760 + nla_total_size(4) /* IFLA_NUM_VF */
761 + rtnl_vfinfo_size(dev) /* IFLA_VFINFO_LIST */
762 + rtnl_port_size(dev) /* IFLA_VF_PORTS + IFLA_PORT_SELF */
763 + rtnl_link_get_size(dev) /* IFLA_LINKINFO */
764 + rtnl_link_get_af_size(dev); /* IFLA_AF_SPEC */
765 }
766
767 static int rtnl_vf_ports_fill(struct sk_buff *skb, struct net_device *dev)
768 {
769 struct nlattr *vf_ports;
770 struct nlattr *vf_port;
771 int vf;
772 int err;
773
774 vf_ports = nla_nest_start(skb, IFLA_VF_PORTS);
775 if (!vf_ports)
776 return -EMSGSIZE;
777
778 for (vf = 0; vf < dev_num_vf(dev->dev.parent); vf++) {
779 vf_port = nla_nest_start(skb, IFLA_VF_PORT);
780 if (!vf_port)
781 goto nla_put_failure;
782 NLA_PUT_U32(skb, IFLA_PORT_VF, vf);
783 err = dev->netdev_ops->ndo_get_vf_port(dev, vf, skb);
784 if (err == -EMSGSIZE)
785 goto nla_put_failure;
786 if (err) {
787 nla_nest_cancel(skb, vf_port);
788 continue;
789 }
790 nla_nest_end(skb, vf_port);
791 }
792
793 nla_nest_end(skb, vf_ports);
794
795 return 0;
796
797 nla_put_failure:
798 nla_nest_cancel(skb, vf_ports);
799 return -EMSGSIZE;
800 }
801
802 static int rtnl_port_self_fill(struct sk_buff *skb, struct net_device *dev)
803 {
804 struct nlattr *port_self;
805 int err;
806
807 port_self = nla_nest_start(skb, IFLA_PORT_SELF);
808 if (!port_self)
809 return -EMSGSIZE;
810
811 err = dev->netdev_ops->ndo_get_vf_port(dev, PORT_SELF_VF, skb);
812 if (err) {
813 nla_nest_cancel(skb, port_self);
814 return (err == -EMSGSIZE) ? err : 0;
815 }
816
817 nla_nest_end(skb, port_self);
818
819 return 0;
820 }
821
822 static int rtnl_port_fill(struct sk_buff *skb, struct net_device *dev)
823 {
824 int err;
825
826 if (!dev->netdev_ops->ndo_get_vf_port || !dev->dev.parent)
827 return 0;
828
829 err = rtnl_port_self_fill(skb, dev);
830 if (err)
831 return err;
832
833 if (dev_num_vf(dev->dev.parent)) {
834 err = rtnl_vf_ports_fill(skb, dev);
835 if (err)
836 return err;
837 }
838
839 return 0;
840 }
841
842 static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev,
843 int type, u32 pid, u32 seq, u32 change,
844 unsigned int flags)
845 {
846 struct ifinfomsg *ifm;
847 struct nlmsghdr *nlh;
848 struct rtnl_link_stats64 temp;
849 const struct rtnl_link_stats64 *stats;
850 struct nlattr *attr, *af_spec;
851 struct rtnl_af_ops *af_ops;
852
853 nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ifm), flags);
854 if (nlh == NULL)
855 return -EMSGSIZE;
856
857 ifm = nlmsg_data(nlh);
858 ifm->ifi_family = AF_UNSPEC;
859 ifm->__ifi_pad = 0;
860 ifm->ifi_type = dev->type;
861 ifm->ifi_index = dev->ifindex;
862 ifm->ifi_flags = dev_get_flags(dev);
863 ifm->ifi_change = change;
864
865 NLA_PUT_STRING(skb, IFLA_IFNAME, dev->name);
866 NLA_PUT_U32(skb, IFLA_TXQLEN, dev->tx_queue_len);
867 NLA_PUT_U8(skb, IFLA_OPERSTATE,
868 netif_running(dev) ? dev->operstate : IF_OPER_DOWN);
869 NLA_PUT_U8(skb, IFLA_LINKMODE, dev->link_mode);
870 NLA_PUT_U32(skb, IFLA_MTU, dev->mtu);
871
872 if (dev->ifindex != dev->iflink)
873 NLA_PUT_U32(skb, IFLA_LINK, dev->iflink);
874
875 if (dev->master)
876 NLA_PUT_U32(skb, IFLA_MASTER, dev->master->ifindex);
877
878 if (dev->qdisc)
879 NLA_PUT_STRING(skb, IFLA_QDISC, dev->qdisc->ops->id);
880
881 if (dev->ifalias)
882 NLA_PUT_STRING(skb, IFLA_IFALIAS, dev->ifalias);
883
884 if (1) {
885 struct rtnl_link_ifmap map = {
886 .mem_start = dev->mem_start,
887 .mem_end = dev->mem_end,
888 .base_addr = dev->base_addr,
889 .irq = dev->irq,
890 .dma = dev->dma,
891 .port = dev->if_port,
892 };
893 NLA_PUT(skb, IFLA_MAP, sizeof(map), &map);
894 }
895
896 if (dev->addr_len) {
897 NLA_PUT(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr);
898 NLA_PUT(skb, IFLA_BROADCAST, dev->addr_len, dev->broadcast);
899 }
900
901 attr = nla_reserve(skb, IFLA_STATS,
902 sizeof(struct rtnl_link_stats));
903 if (attr == NULL)
904 goto nla_put_failure;
905
906 stats = dev_get_stats(dev, &temp);
907 copy_rtnl_link_stats(nla_data(attr), stats);
908
909 attr = nla_reserve(skb, IFLA_STATS64,
910 sizeof(struct rtnl_link_stats64));
911 if (attr == NULL)
912 goto nla_put_failure;
913 copy_rtnl_link_stats64(nla_data(attr), stats);
914
915 if (dev->dev.parent)
916 NLA_PUT_U32(skb, IFLA_NUM_VF, dev_num_vf(dev->dev.parent));
917
918 if (dev->netdev_ops->ndo_get_vf_config && dev->dev.parent) {
919 int i;
920
921 struct nlattr *vfinfo, *vf;
922 int num_vfs = dev_num_vf(dev->dev.parent);
923
924 vfinfo = nla_nest_start(skb, IFLA_VFINFO_LIST);
925 if (!vfinfo)
926 goto nla_put_failure;
927 for (i = 0; i < num_vfs; i++) {
928 struct ifla_vf_info ivi;
929 struct ifla_vf_mac vf_mac;
930 struct ifla_vf_vlan vf_vlan;
931 struct ifla_vf_tx_rate vf_tx_rate;
932 if (dev->netdev_ops->ndo_get_vf_config(dev, i, &ivi))
933 break;
934 vf_mac.vf = vf_vlan.vf = vf_tx_rate.vf = ivi.vf;
935 memcpy(vf_mac.mac, ivi.mac, sizeof(ivi.mac));
936 vf_vlan.vlan = ivi.vlan;
937 vf_vlan.qos = ivi.qos;
938 vf_tx_rate.rate = ivi.tx_rate;
939 vf = nla_nest_start(skb, IFLA_VF_INFO);
940 if (!vf) {
941 nla_nest_cancel(skb, vfinfo);
942 goto nla_put_failure;
943 }
944 NLA_PUT(skb, IFLA_VF_MAC, sizeof(vf_mac), &vf_mac);
945 NLA_PUT(skb, IFLA_VF_VLAN, sizeof(vf_vlan), &vf_vlan);
946 NLA_PUT(skb, IFLA_VF_TX_RATE, sizeof(vf_tx_rate), &vf_tx_rate);
947 nla_nest_end(skb, vf);
948 }
949 nla_nest_end(skb, vfinfo);
950 }
951
952 if (rtnl_port_fill(skb, dev))
953 goto nla_put_failure;
954
955 if (dev->rtnl_link_ops) {
956 if (rtnl_link_fill(skb, dev) < 0)
957 goto nla_put_failure;
958 }
959
960 if (!(af_spec = nla_nest_start(skb, IFLA_AF_SPEC)))
961 goto nla_put_failure;
962
963 list_for_each_entry(af_ops, &rtnl_af_ops, list) {
964 if (af_ops->fill_link_af) {
965 struct nlattr *af;
966 int err;
967
968 if (!(af = nla_nest_start(skb, af_ops->family)))
969 goto nla_put_failure;
970
971 err = af_ops->fill_link_af(skb, dev);
972
973 /*
974 * Caller may return ENODATA to indicate that there
975 * was no data to be dumped. This is not an error, it
976 * means we should trim the attribute header and
977 * continue.
978 */
979 if (err == -ENODATA)
980 nla_nest_cancel(skb, af);
981 else if (err < 0)
982 goto nla_put_failure;
983
984 nla_nest_end(skb, af);
985 }
986 }
987
988 nla_nest_end(skb, af_spec);
989
990 return nlmsg_end(skb, nlh);
991
992 nla_put_failure:
993 nlmsg_cancel(skb, nlh);
994 return -EMSGSIZE;
995 }
996
997 static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb)
998 {
999 struct net *net = sock_net(skb->sk);
1000 int h, s_h;
1001 int idx = 0, s_idx;
1002 struct net_device *dev;
1003 struct hlist_head *head;
1004 struct hlist_node *node;
1005
1006 s_h = cb->args[0];
1007 s_idx = cb->args[1];
1008
1009 for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) {
1010 idx = 0;
1011 head = &net->dev_index_head[h];
1012 hlist_for_each_entry(dev, node, head, index_hlist) {
1013 if (idx < s_idx)
1014 goto cont;
1015 if (rtnl_fill_ifinfo(skb, dev, RTM_NEWLINK,
1016 NETLINK_CB(cb->skb).pid,
1017 cb->nlh->nlmsg_seq, 0,
1018 NLM_F_MULTI) <= 0)
1019 goto out;
1020 cont:
1021 idx++;
1022 }
1023 }
1024 out:
1025 cb->args[1] = idx;
1026 cb->args[0] = h;
1027
1028 return skb->len;
1029 }
1030
1031 const struct nla_policy ifla_policy[IFLA_MAX+1] = {
1032 [IFLA_IFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ-1 },
1033 [IFLA_ADDRESS] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN },
1034 [IFLA_BROADCAST] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN },
1035 [IFLA_MAP] = { .len = sizeof(struct rtnl_link_ifmap) },
1036 [IFLA_MTU] = { .type = NLA_U32 },
1037 [IFLA_LINK] = { .type = NLA_U32 },
1038 [IFLA_TXQLEN] = { .type = NLA_U32 },
1039 [IFLA_WEIGHT] = { .type = NLA_U32 },
1040 [IFLA_OPERSTATE] = { .type = NLA_U8 },
1041 [IFLA_LINKMODE] = { .type = NLA_U8 },
1042 [IFLA_LINKINFO] = { .type = NLA_NESTED },
1043 [IFLA_NET_NS_PID] = { .type = NLA_U32 },
1044 [IFLA_IFALIAS] = { .type = NLA_STRING, .len = IFALIASZ-1 },
1045 [IFLA_VFINFO_LIST] = {. type = NLA_NESTED },
1046 [IFLA_VF_PORTS] = { .type = NLA_NESTED },
1047 [IFLA_PORT_SELF] = { .type = NLA_NESTED },
1048 [IFLA_AF_SPEC] = { .type = NLA_NESTED },
1049 };
1050 EXPORT_SYMBOL(ifla_policy);
1051
1052 static const struct nla_policy ifla_info_policy[IFLA_INFO_MAX+1] = {
1053 [IFLA_INFO_KIND] = { .type = NLA_STRING },
1054 [IFLA_INFO_DATA] = { .type = NLA_NESTED },
1055 };
1056
1057 static const struct nla_policy ifla_vfinfo_policy[IFLA_VF_INFO_MAX+1] = {
1058 [IFLA_VF_INFO] = { .type = NLA_NESTED },
1059 };
1060
1061 static const struct nla_policy ifla_vf_policy[IFLA_VF_MAX+1] = {
1062 [IFLA_VF_MAC] = { .type = NLA_BINARY,
1063 .len = sizeof(struct ifla_vf_mac) },
1064 [IFLA_VF_VLAN] = { .type = NLA_BINARY,
1065 .len = sizeof(struct ifla_vf_vlan) },
1066 [IFLA_VF_TX_RATE] = { .type = NLA_BINARY,
1067 .len = sizeof(struct ifla_vf_tx_rate) },
1068 };
1069
1070 static const struct nla_policy ifla_port_policy[IFLA_PORT_MAX+1] = {
1071 [IFLA_PORT_VF] = { .type = NLA_U32 },
1072 [IFLA_PORT_PROFILE] = { .type = NLA_STRING,
1073 .len = PORT_PROFILE_MAX },
1074 [IFLA_PORT_VSI_TYPE] = { .type = NLA_BINARY,
1075 .len = sizeof(struct ifla_port_vsi)},
1076 [IFLA_PORT_INSTANCE_UUID] = { .type = NLA_BINARY,
1077 .len = PORT_UUID_MAX },
1078 [IFLA_PORT_HOST_UUID] = { .type = NLA_STRING,
1079 .len = PORT_UUID_MAX },
1080 [IFLA_PORT_REQUEST] = { .type = NLA_U8, },
1081 [IFLA_PORT_RESPONSE] = { .type = NLA_U16, },
1082 };
1083
1084 struct net *rtnl_link_get_net(struct net *src_net, struct nlattr *tb[])
1085 {
1086 struct net *net;
1087 /* Examine the link attributes and figure out which
1088 * network namespace we are talking about.
1089 */
1090 if (tb[IFLA_NET_NS_PID])
1091 net = get_net_ns_by_pid(nla_get_u32(tb[IFLA_NET_NS_PID]));
1092 else
1093 net = get_net(src_net);
1094 return net;
1095 }
1096 EXPORT_SYMBOL(rtnl_link_get_net);
1097
1098 static int validate_linkmsg(struct net_device *dev, struct nlattr *tb[])
1099 {
1100 if (dev) {
1101 if (tb[IFLA_ADDRESS] &&
1102 nla_len(tb[IFLA_ADDRESS]) < dev->addr_len)
1103 return -EINVAL;
1104
1105 if (tb[IFLA_BROADCAST] &&
1106 nla_len(tb[IFLA_BROADCAST]) < dev->addr_len)
1107 return -EINVAL;
1108 }
1109
1110 if (tb[IFLA_AF_SPEC]) {
1111 struct nlattr *af;
1112 int rem, err;
1113
1114 nla_for_each_nested(af, tb[IFLA_AF_SPEC], rem) {
1115 const struct rtnl_af_ops *af_ops;
1116
1117 if (!(af_ops = rtnl_af_lookup(nla_type(af))))
1118 return -EAFNOSUPPORT;
1119
1120 if (!af_ops->set_link_af)
1121 return -EOPNOTSUPP;
1122
1123 if (af_ops->validate_link_af) {
1124 err = af_ops->validate_link_af(dev, af);
1125 if (err < 0)
1126 return err;
1127 }
1128 }
1129 }
1130
1131 return 0;
1132 }
1133
1134 static int do_setvfinfo(struct net_device *dev, struct nlattr *attr)
1135 {
1136 int rem, err = -EINVAL;
1137 struct nlattr *vf;
1138 const struct net_device_ops *ops = dev->netdev_ops;
1139
1140 nla_for_each_nested(vf, attr, rem) {
1141 switch (nla_type(vf)) {
1142 case IFLA_VF_MAC: {
1143 struct ifla_vf_mac *ivm;
1144 ivm = nla_data(vf);
1145 err = -EOPNOTSUPP;
1146 if (ops->ndo_set_vf_mac)
1147 err = ops->ndo_set_vf_mac(dev, ivm->vf,
1148 ivm->mac);
1149 break;
1150 }
1151 case IFLA_VF_VLAN: {
1152 struct ifla_vf_vlan *ivv;
1153 ivv = nla_data(vf);
1154 err = -EOPNOTSUPP;
1155 if (ops->ndo_set_vf_vlan)
1156 err = ops->ndo_set_vf_vlan(dev, ivv->vf,
1157 ivv->vlan,
1158 ivv->qos);
1159 break;
1160 }
1161 case IFLA_VF_TX_RATE: {
1162 struct ifla_vf_tx_rate *ivt;
1163 ivt = nla_data(vf);
1164 err = -EOPNOTSUPP;
1165 if (ops->ndo_set_vf_tx_rate)
1166 err = ops->ndo_set_vf_tx_rate(dev, ivt->vf,
1167 ivt->rate);
1168 break;
1169 }
1170 default:
1171 err = -EINVAL;
1172 break;
1173 }
1174 if (err)
1175 break;
1176 }
1177 return err;
1178 }
1179
1180 static int do_setlink(struct net_device *dev, struct ifinfomsg *ifm,
1181 struct nlattr **tb, char *ifname, int modified)
1182 {
1183 const struct net_device_ops *ops = dev->netdev_ops;
1184 int send_addr_notify = 0;
1185 int err;
1186
1187 if (tb[IFLA_NET_NS_PID]) {
1188 struct net *net = rtnl_link_get_net(dev_net(dev), tb);
1189 if (IS_ERR(net)) {
1190 err = PTR_ERR(net);
1191 goto errout;
1192 }
1193 err = dev_change_net_namespace(dev, net, ifname);
1194 put_net(net);
1195 if (err)
1196 goto errout;
1197 modified = 1;
1198 }
1199
1200 if (tb[IFLA_MAP]) {
1201 struct rtnl_link_ifmap *u_map;
1202 struct ifmap k_map;
1203
1204 if (!ops->ndo_set_config) {
1205 err = -EOPNOTSUPP;
1206 goto errout;
1207 }
1208
1209 if (!netif_device_present(dev)) {
1210 err = -ENODEV;
1211 goto errout;
1212 }
1213
1214 u_map = nla_data(tb[IFLA_MAP]);
1215 k_map.mem_start = (unsigned long) u_map->mem_start;
1216 k_map.mem_end = (unsigned long) u_map->mem_end;
1217 k_map.base_addr = (unsigned short) u_map->base_addr;
1218 k_map.irq = (unsigned char) u_map->irq;
1219 k_map.dma = (unsigned char) u_map->dma;
1220 k_map.port = (unsigned char) u_map->port;
1221
1222 err = ops->ndo_set_config(dev, &k_map);
1223 if (err < 0)
1224 goto errout;
1225
1226 modified = 1;
1227 }
1228
1229 if (tb[IFLA_ADDRESS]) {
1230 struct sockaddr *sa;
1231 int len;
1232
1233 if (!ops->ndo_set_mac_address) {
1234 err = -EOPNOTSUPP;
1235 goto errout;
1236 }
1237
1238 if (!netif_device_present(dev)) {
1239 err = -ENODEV;
1240 goto errout;
1241 }
1242
1243 len = sizeof(sa_family_t) + dev->addr_len;
1244 sa = kmalloc(len, GFP_KERNEL);
1245 if (!sa) {
1246 err = -ENOMEM;
1247 goto errout;
1248 }
1249 sa->sa_family = dev->type;
1250 memcpy(sa->sa_data, nla_data(tb[IFLA_ADDRESS]),
1251 dev->addr_len);
1252 err = ops->ndo_set_mac_address(dev, sa);
1253 kfree(sa);
1254 if (err)
1255 goto errout;
1256 send_addr_notify = 1;
1257 modified = 1;
1258 }
1259
1260 if (tb[IFLA_MTU]) {
1261 err = dev_set_mtu(dev, nla_get_u32(tb[IFLA_MTU]));
1262 if (err < 0)
1263 goto errout;
1264 modified = 1;
1265 }
1266
1267 /*
1268 * Interface selected by interface index but interface
1269 * name provided implies that a name change has been
1270 * requested.
1271 */
1272 if (ifm->ifi_index > 0 && ifname[0]) {
1273 err = dev_change_name(dev, ifname);
1274 if (err < 0)
1275 goto errout;
1276 modified = 1;
1277 }
1278
1279 if (tb[IFLA_IFALIAS]) {
1280 err = dev_set_alias(dev, nla_data(tb[IFLA_IFALIAS]),
1281 nla_len(tb[IFLA_IFALIAS]));
1282 if (err < 0)
1283 goto errout;
1284 modified = 1;
1285 }
1286
1287 if (tb[IFLA_BROADCAST]) {
1288 nla_memcpy(dev->broadcast, tb[IFLA_BROADCAST], dev->addr_len);
1289 send_addr_notify = 1;
1290 }
1291
1292 if (ifm->ifi_flags || ifm->ifi_change) {
1293 err = dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm));
1294 if (err < 0)
1295 goto errout;
1296 }
1297
1298 if (tb[IFLA_TXQLEN])
1299 dev->tx_queue_len = nla_get_u32(tb[IFLA_TXQLEN]);
1300
1301 if (tb[IFLA_OPERSTATE])
1302 set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE]));
1303
1304 if (tb[IFLA_LINKMODE]) {
1305 write_lock_bh(&dev_base_lock);
1306 dev->link_mode = nla_get_u8(tb[IFLA_LINKMODE]);
1307 write_unlock_bh(&dev_base_lock);
1308 }
1309
1310 if (tb[IFLA_VFINFO_LIST]) {
1311 struct nlattr *attr;
1312 int rem;
1313 nla_for_each_nested(attr, tb[IFLA_VFINFO_LIST], rem) {
1314 if (nla_type(attr) != IFLA_VF_INFO) {
1315 err = -EINVAL;
1316 goto errout;
1317 }
1318 err = do_setvfinfo(dev, attr);
1319 if (err < 0)
1320 goto errout;
1321 modified = 1;
1322 }
1323 }
1324 err = 0;
1325
1326 if (tb[IFLA_VF_PORTS]) {
1327 struct nlattr *port[IFLA_PORT_MAX+1];
1328 struct nlattr *attr;
1329 int vf;
1330 int rem;
1331
1332 err = -EOPNOTSUPP;
1333 if (!ops->ndo_set_vf_port)
1334 goto errout;
1335
1336 nla_for_each_nested(attr, tb[IFLA_VF_PORTS], rem) {
1337 if (nla_type(attr) != IFLA_VF_PORT)
1338 continue;
1339 err = nla_parse_nested(port, IFLA_PORT_MAX,
1340 attr, ifla_port_policy);
1341 if (err < 0)
1342 goto errout;
1343 if (!port[IFLA_PORT_VF]) {
1344 err = -EOPNOTSUPP;
1345 goto errout;
1346 }
1347 vf = nla_get_u32(port[IFLA_PORT_VF]);
1348 err = ops->ndo_set_vf_port(dev, vf, port);
1349 if (err < 0)
1350 goto errout;
1351 modified = 1;
1352 }
1353 }
1354 err = 0;
1355
1356 if (tb[IFLA_PORT_SELF]) {
1357 struct nlattr *port[IFLA_PORT_MAX+1];
1358
1359 err = nla_parse_nested(port, IFLA_PORT_MAX,
1360 tb[IFLA_PORT_SELF], ifla_port_policy);
1361 if (err < 0)
1362 goto errout;
1363
1364 err = -EOPNOTSUPP;
1365 if (ops->ndo_set_vf_port)
1366 err = ops->ndo_set_vf_port(dev, PORT_SELF_VF, port);
1367 if (err < 0)
1368 goto errout;
1369 modified = 1;
1370 }
1371
1372 if (tb[IFLA_AF_SPEC]) {
1373 struct nlattr *af;
1374 int rem;
1375
1376 nla_for_each_nested(af, tb[IFLA_AF_SPEC], rem) {
1377 const struct rtnl_af_ops *af_ops;
1378
1379 if (!(af_ops = rtnl_af_lookup(nla_type(af))))
1380 BUG();
1381
1382 err = af_ops->set_link_af(dev, af);
1383 if (err < 0)
1384 goto errout;
1385
1386 modified = 1;
1387 }
1388 }
1389 err = 0;
1390
1391 errout:
1392 if (err < 0 && modified && net_ratelimit())
1393 printk(KERN_WARNING "A link change request failed with "
1394 "some changes comitted already. Interface %s may "
1395 "have been left with an inconsistent configuration, "
1396 "please check.\n", dev->name);
1397
1398 if (send_addr_notify)
1399 call_netdevice_notifiers(NETDEV_CHANGEADDR, dev);
1400 return err;
1401 }
1402
1403 static int rtnl_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
1404 {
1405 struct net *net = sock_net(skb->sk);
1406 struct ifinfomsg *ifm;
1407 struct net_device *dev;
1408 int err;
1409 struct nlattr *tb[IFLA_MAX+1];
1410 char ifname[IFNAMSIZ];
1411
1412 err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy);
1413 if (err < 0)
1414 goto errout;
1415
1416 if (tb[IFLA_IFNAME])
1417 nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ);
1418 else
1419 ifname[0] = '\0';
1420
1421 err = -EINVAL;
1422 ifm = nlmsg_data(nlh);
1423 if (ifm->ifi_index > 0)
1424 dev = __dev_get_by_index(net, ifm->ifi_index);
1425 else if (tb[IFLA_IFNAME])
1426 dev = __dev_get_by_name(net, ifname);
1427 else
1428 goto errout;
1429
1430 if (dev == NULL) {
1431 err = -ENODEV;
1432 goto errout;
1433 }
1434
1435 err = validate_linkmsg(dev, tb);
1436 if (err < 0)
1437 goto errout;
1438
1439 err = do_setlink(dev, ifm, tb, ifname, 0);
1440 errout:
1441 return err;
1442 }
1443
1444 static int rtnl_dellink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
1445 {
1446 struct net *net = sock_net(skb->sk);
1447 const struct rtnl_link_ops *ops;
1448 struct net_device *dev;
1449 struct ifinfomsg *ifm;
1450 char ifname[IFNAMSIZ];
1451 struct nlattr *tb[IFLA_MAX+1];
1452 int err;
1453
1454 err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy);
1455 if (err < 0)
1456 return err;
1457
1458 if (tb[IFLA_IFNAME])
1459 nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ);
1460
1461 ifm = nlmsg_data(nlh);
1462 if (ifm->ifi_index > 0)
1463 dev = __dev_get_by_index(net, ifm->ifi_index);
1464 else if (tb[IFLA_IFNAME])
1465 dev = __dev_get_by_name(net, ifname);
1466 else
1467 return -EINVAL;
1468
1469 if (!dev)
1470 return -ENODEV;
1471
1472 ops = dev->rtnl_link_ops;
1473 if (!ops)
1474 return -EOPNOTSUPP;
1475
1476 ops->dellink(dev, NULL);
1477 return 0;
1478 }
1479
1480 int rtnl_configure_link(struct net_device *dev, const struct ifinfomsg *ifm)
1481 {
1482 unsigned int old_flags;
1483 int err;
1484
1485 old_flags = dev->flags;
1486 if (ifm && (ifm->ifi_flags || ifm->ifi_change)) {
1487 err = __dev_change_flags(dev, rtnl_dev_combine_flags(dev, ifm));
1488 if (err < 0)
1489 return err;
1490 }
1491
1492 dev->rtnl_link_state = RTNL_LINK_INITIALIZED;
1493 rtmsg_ifinfo(RTM_NEWLINK, dev, ~0U);
1494
1495 __dev_notify_flags(dev, old_flags);
1496 return 0;
1497 }
1498 EXPORT_SYMBOL(rtnl_configure_link);
1499
1500 struct net_device *rtnl_create_link(struct net *src_net, struct net *net,
1501 char *ifname, const struct rtnl_link_ops *ops, struct nlattr *tb[])
1502 {
1503 int err;
1504 struct net_device *dev;
1505 unsigned int num_queues = 1;
1506 unsigned int real_num_queues = 1;
1507
1508 if (ops->get_tx_queues) {
1509 err = ops->get_tx_queues(src_net, tb, &num_queues,
1510 &real_num_queues);
1511 if (err)
1512 goto err;
1513 }
1514 err = -ENOMEM;
1515 dev = alloc_netdev_mq(ops->priv_size, ifname, ops->setup, num_queues);
1516 if (!dev)
1517 goto err;
1518
1519 dev_net_set(dev, net);
1520 dev->rtnl_link_ops = ops;
1521 dev->rtnl_link_state = RTNL_LINK_INITIALIZING;
1522 dev->real_num_tx_queues = real_num_queues;
1523
1524 if (strchr(dev->name, '%')) {
1525 err = dev_alloc_name(dev, dev->name);
1526 if (err < 0)
1527 goto err_free;
1528 }
1529
1530 if (tb[IFLA_MTU])
1531 dev->mtu = nla_get_u32(tb[IFLA_MTU]);
1532 if (tb[IFLA_ADDRESS])
1533 memcpy(dev->dev_addr, nla_data(tb[IFLA_ADDRESS]),
1534 nla_len(tb[IFLA_ADDRESS]));
1535 if (tb[IFLA_BROADCAST])
1536 memcpy(dev->broadcast, nla_data(tb[IFLA_BROADCAST]),
1537 nla_len(tb[IFLA_BROADCAST]));
1538 if (tb[IFLA_TXQLEN])
1539 dev->tx_queue_len = nla_get_u32(tb[IFLA_TXQLEN]);
1540 if (tb[IFLA_OPERSTATE])
1541 set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE]));
1542 if (tb[IFLA_LINKMODE])
1543 dev->link_mode = nla_get_u8(tb[IFLA_LINKMODE]);
1544
1545 return dev;
1546
1547 err_free:
1548 free_netdev(dev);
1549 err:
1550 return ERR_PTR(err);
1551 }
1552 EXPORT_SYMBOL(rtnl_create_link);
1553
1554 static int rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
1555 {
1556 struct net *net = sock_net(skb->sk);
1557 const struct rtnl_link_ops *ops;
1558 struct net_device *dev;
1559 struct ifinfomsg *ifm;
1560 char kind[MODULE_NAME_LEN];
1561 char ifname[IFNAMSIZ];
1562 struct nlattr *tb[IFLA_MAX+1];
1563 struct nlattr *linkinfo[IFLA_INFO_MAX+1];
1564 int err;
1565
1566 #ifdef CONFIG_MODULES
1567 replay:
1568 #endif
1569 err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy);
1570 if (err < 0)
1571 return err;
1572
1573 if (tb[IFLA_IFNAME])
1574 nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ);
1575 else
1576 ifname[0] = '\0';
1577
1578 ifm = nlmsg_data(nlh);
1579 if (ifm->ifi_index > 0)
1580 dev = __dev_get_by_index(net, ifm->ifi_index);
1581 else if (ifname[0])
1582 dev = __dev_get_by_name(net, ifname);
1583 else
1584 dev = NULL;
1585
1586 err = validate_linkmsg(dev, tb);
1587 if (err < 0)
1588 return err;
1589
1590 if (tb[IFLA_LINKINFO]) {
1591 err = nla_parse_nested(linkinfo, IFLA_INFO_MAX,
1592 tb[IFLA_LINKINFO], ifla_info_policy);
1593 if (err < 0)
1594 return err;
1595 } else
1596 memset(linkinfo, 0, sizeof(linkinfo));
1597
1598 if (linkinfo[IFLA_INFO_KIND]) {
1599 nla_strlcpy(kind, linkinfo[IFLA_INFO_KIND], sizeof(kind));
1600 ops = rtnl_link_ops_get(kind);
1601 } else {
1602 kind[0] = '\0';
1603 ops = NULL;
1604 }
1605
1606 if (1) {
1607 struct nlattr *attr[ops ? ops->maxtype + 1 : 0], **data = NULL;
1608 struct net *dest_net;
1609
1610 if (ops) {
1611 if (ops->maxtype && linkinfo[IFLA_INFO_DATA]) {
1612 err = nla_parse_nested(attr, ops->maxtype,
1613 linkinfo[IFLA_INFO_DATA],
1614 ops->policy);
1615 if (err < 0)
1616 return err;
1617 data = attr;
1618 }
1619 if (ops->validate) {
1620 err = ops->validate(tb, data);
1621 if (err < 0)
1622 return err;
1623 }
1624 }
1625
1626 if (dev) {
1627 int modified = 0;
1628
1629 if (nlh->nlmsg_flags & NLM_F_EXCL)
1630 return -EEXIST;
1631 if (nlh->nlmsg_flags & NLM_F_REPLACE)
1632 return -EOPNOTSUPP;
1633
1634 if (linkinfo[IFLA_INFO_DATA]) {
1635 if (!ops || ops != dev->rtnl_link_ops ||
1636 !ops->changelink)
1637 return -EOPNOTSUPP;
1638
1639 err = ops->changelink(dev, tb, data);
1640 if (err < 0)
1641 return err;
1642 modified = 1;
1643 }
1644
1645 return do_setlink(dev, ifm, tb, ifname, modified);
1646 }
1647
1648 if (!(nlh->nlmsg_flags & NLM_F_CREATE))
1649 return -ENODEV;
1650
1651 if (ifm->ifi_index)
1652 return -EOPNOTSUPP;
1653 if (tb[IFLA_MAP] || tb[IFLA_MASTER] || tb[IFLA_PROTINFO])
1654 return -EOPNOTSUPP;
1655
1656 if (!ops) {
1657 #ifdef CONFIG_MODULES
1658 if (kind[0]) {
1659 __rtnl_unlock();
1660 request_module("rtnl-link-%s", kind);
1661 rtnl_lock();
1662 ops = rtnl_link_ops_get(kind);
1663 if (ops)
1664 goto replay;
1665 }
1666 #endif
1667 return -EOPNOTSUPP;
1668 }
1669
1670 if (!ifname[0])
1671 snprintf(ifname, IFNAMSIZ, "%s%%d", ops->kind);
1672
1673 dest_net = rtnl_link_get_net(net, tb);
1674 if (IS_ERR(dest_net))
1675 return PTR_ERR(dest_net);
1676
1677 dev = rtnl_create_link(net, dest_net, ifname, ops, tb);
1678
1679 if (IS_ERR(dev))
1680 err = PTR_ERR(dev);
1681 else if (ops->newlink)
1682 err = ops->newlink(net, dev, tb, data);
1683 else
1684 err = register_netdevice(dev);
1685
1686 if (err < 0 && !IS_ERR(dev))
1687 free_netdev(dev);
1688 if (err < 0)
1689 goto out;
1690
1691 err = rtnl_configure_link(dev, ifm);
1692 if (err < 0)
1693 unregister_netdevice(dev);
1694 out:
1695 put_net(dest_net);
1696 return err;
1697 }
1698 }
1699
1700 static int rtnl_getlink(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
1701 {
1702 struct net *net = sock_net(skb->sk);
1703 struct ifinfomsg *ifm;
1704 char ifname[IFNAMSIZ];
1705 struct nlattr *tb[IFLA_MAX+1];
1706 struct net_device *dev = NULL;
1707 struct sk_buff *nskb;
1708 int err;
1709
1710 err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy);
1711 if (err < 0)
1712 return err;
1713
1714 if (tb[IFLA_IFNAME])
1715 nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ);
1716
1717 ifm = nlmsg_data(nlh);
1718 if (ifm->ifi_index > 0)
1719 dev = __dev_get_by_index(net, ifm->ifi_index);
1720 else if (tb[IFLA_IFNAME])
1721 dev = __dev_get_by_name(net, ifname);
1722 else
1723 return -EINVAL;
1724
1725 if (dev == NULL)
1726 return -ENODEV;
1727
1728 nskb = nlmsg_new(if_nlmsg_size(dev), GFP_KERNEL);
1729 if (nskb == NULL)
1730 return -ENOBUFS;
1731
1732 err = rtnl_fill_ifinfo(nskb, dev, RTM_NEWLINK, NETLINK_CB(skb).pid,
1733 nlh->nlmsg_seq, 0, 0);
1734 if (err < 0) {
1735 /* -EMSGSIZE implies BUG in if_nlmsg_size */
1736 WARN_ON(err == -EMSGSIZE);
1737 kfree_skb(nskb);
1738 } else
1739 err = rtnl_unicast(nskb, net, NETLINK_CB(skb).pid);
1740
1741 return err;
1742 }
1743
1744 static int rtnl_dump_all(struct sk_buff *skb, struct netlink_callback *cb)
1745 {
1746 int idx;
1747 int s_idx = cb->family;
1748
1749 if (s_idx == 0)
1750 s_idx = 1;
1751 for (idx = 1; idx <= RTNL_FAMILY_MAX; idx++) {
1752 int type = cb->nlh->nlmsg_type-RTM_BASE;
1753 if (idx < s_idx || idx == PF_PACKET)
1754 continue;
1755 if (rtnl_msg_handlers[idx] == NULL ||
1756 rtnl_msg_handlers[idx][type].dumpit == NULL)
1757 continue;
1758 if (idx > s_idx)
1759 memset(&cb->args[0], 0, sizeof(cb->args));
1760 if (rtnl_msg_handlers[idx][type].dumpit(skb, cb))
1761 break;
1762 }
1763 cb->family = idx;
1764
1765 return skb->len;
1766 }
1767
1768 void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change)
1769 {
1770 struct net *net = dev_net(dev);
1771 struct sk_buff *skb;
1772 int err = -ENOBUFS;
1773
1774 skb = nlmsg_new(if_nlmsg_size(dev), GFP_KERNEL);
1775 if (skb == NULL)
1776 goto errout;
1777
1778 err = rtnl_fill_ifinfo(skb, dev, type, 0, 0, change, 0);
1779 if (err < 0) {
1780 /* -EMSGSIZE implies BUG in if_nlmsg_size() */
1781 WARN_ON(err == -EMSGSIZE);
1782 kfree_skb(skb);
1783 goto errout;
1784 }
1785 rtnl_notify(skb, net, 0, RTNLGRP_LINK, NULL, GFP_KERNEL);
1786 return;
1787 errout:
1788 if (err < 0)
1789 rtnl_set_sk_err(net, RTNLGRP_LINK, err);
1790 }
1791
1792 /* Protected by RTNL sempahore. */
1793 static struct rtattr **rta_buf;
1794 static int rtattr_max;
1795
1796 /* Process one rtnetlink message. */
1797
1798 static int rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
1799 {
1800 struct net *net = sock_net(skb->sk);
1801 rtnl_doit_func doit;
1802 int sz_idx, kind;
1803 int min_len;
1804 int family;
1805 int type;
1806 int err;
1807
1808 type = nlh->nlmsg_type;
1809 if (type > RTM_MAX)
1810 return -EOPNOTSUPP;
1811
1812 type -= RTM_BASE;
1813
1814 /* All the messages must have at least 1 byte length */
1815 if (nlh->nlmsg_len < NLMSG_LENGTH(sizeof(struct rtgenmsg)))
1816 return 0;
1817
1818 family = ((struct rtgenmsg *)NLMSG_DATA(nlh))->rtgen_family;
1819 sz_idx = type>>2;
1820 kind = type&3;
1821
1822 if (kind != 2 && security_netlink_recv(skb, CAP_NET_ADMIN))
1823 return -EPERM;
1824
1825 if (kind == 2 && nlh->nlmsg_flags&NLM_F_DUMP) {
1826 struct sock *rtnl;
1827 rtnl_dumpit_func dumpit;
1828
1829 dumpit = rtnl_get_dumpit(family, type);
1830 if (dumpit == NULL)
1831 return -EOPNOTSUPP;
1832
1833 __rtnl_unlock();
1834 rtnl = net->rtnl;
1835 err = netlink_dump_start(rtnl, skb, nlh, dumpit, NULL);
1836 rtnl_lock();
1837 return err;
1838 }
1839
1840 memset(rta_buf, 0, (rtattr_max * sizeof(struct rtattr *)));
1841
1842 min_len = rtm_min[sz_idx];
1843 if (nlh->nlmsg_len < min_len)
1844 return -EINVAL;
1845
1846 if (nlh->nlmsg_len > min_len) {
1847 int attrlen = nlh->nlmsg_len - NLMSG_ALIGN(min_len);
1848 struct rtattr *attr = (void *)nlh + NLMSG_ALIGN(min_len);
1849
1850 while (RTA_OK(attr, attrlen)) {
1851 unsigned flavor = attr->rta_type;
1852 if (flavor) {
1853 if (flavor > rta_max[sz_idx])
1854 return -EINVAL;
1855 rta_buf[flavor-1] = attr;
1856 }
1857 attr = RTA_NEXT(attr, attrlen);
1858 }
1859 }
1860
1861 doit = rtnl_get_doit(family, type);
1862 if (doit == NULL)
1863 return -EOPNOTSUPP;
1864
1865 return doit(skb, nlh, (void *)&rta_buf[0]);
1866 }
1867
1868 static void rtnetlink_rcv(struct sk_buff *skb)
1869 {
1870 rtnl_lock();
1871 netlink_rcv_skb(skb, &rtnetlink_rcv_msg);
1872 rtnl_unlock();
1873 }
1874
1875 static int rtnetlink_event(struct notifier_block *this, unsigned long event, void *ptr)
1876 {
1877 struct net_device *dev = ptr;
1878
1879 switch (event) {
1880 case NETDEV_UP:
1881 case NETDEV_DOWN:
1882 case NETDEV_PRE_UP:
1883 case NETDEV_POST_INIT:
1884 case NETDEV_REGISTER:
1885 case NETDEV_CHANGE:
1886 case NETDEV_PRE_TYPE_CHANGE:
1887 case NETDEV_GOING_DOWN:
1888 case NETDEV_UNREGISTER:
1889 case NETDEV_UNREGISTER_BATCH:
1890 break;
1891 default:
1892 rtmsg_ifinfo(RTM_NEWLINK, dev, 0);
1893 break;
1894 }
1895 return NOTIFY_DONE;
1896 }
1897
1898 static struct notifier_block rtnetlink_dev_notifier = {
1899 .notifier_call = rtnetlink_event,
1900 };
1901
1902
1903 static int __net_init rtnetlink_net_init(struct net *net)
1904 {
1905 struct sock *sk;
1906 sk = netlink_kernel_create(net, NETLINK_ROUTE, RTNLGRP_MAX,
1907 rtnetlink_rcv, &rtnl_mutex, THIS_MODULE);
1908 if (!sk)
1909 return -ENOMEM;
1910 net->rtnl = sk;
1911 return 0;
1912 }
1913
1914 static void __net_exit rtnetlink_net_exit(struct net *net)
1915 {
1916 netlink_kernel_release(net->rtnl);
1917 net->rtnl = NULL;
1918 }
1919
1920 static struct pernet_operations rtnetlink_net_ops = {
1921 .init = rtnetlink_net_init,
1922 .exit = rtnetlink_net_exit,
1923 };
1924
1925 void __init rtnetlink_init(void)
1926 {
1927 int i;
1928
1929 rtattr_max = 0;
1930 for (i = 0; i < ARRAY_SIZE(rta_max); i++)
1931 if (rta_max[i] > rtattr_max)
1932 rtattr_max = rta_max[i];
1933 rta_buf = kmalloc(rtattr_max * sizeof(struct rtattr *), GFP_KERNEL);
1934 if (!rta_buf)
1935 panic("rtnetlink_init: cannot allocate rta_buf\n");
1936
1937 if (register_pernet_subsys(&rtnetlink_net_ops))
1938 panic("rtnetlink_init: cannot initialize rtnetlink\n");
1939
1940 netlink_set_nonroot(NETLINK_ROUTE, NL_NONROOT_RECV);
1941 register_netdevice_notifier(&rtnetlink_dev_notifier);
1942
1943 rtnl_register(PF_UNSPEC, RTM_GETLINK, rtnl_getlink, rtnl_dump_ifinfo);
1944 rtnl_register(PF_UNSPEC, RTM_SETLINK, rtnl_setlink, NULL);
1945 rtnl_register(PF_UNSPEC, RTM_NEWLINK, rtnl_newlink, NULL);
1946 rtnl_register(PF_UNSPEC, RTM_DELLINK, rtnl_dellink, NULL);
1947
1948 rtnl_register(PF_UNSPEC, RTM_GETADDR, NULL, rtnl_dump_all);
1949 rtnl_register(PF_UNSPEC, RTM_GETROUTE, NULL, rtnl_dump_all);
1950 }
1951
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree