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Commit | Line | Data |
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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> |
1da177e4 LT |
38 | |
39 | #include <asm/uaccess.h> | |
40 | #include <asm/system.h> | |
41 | #include <asm/string.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> | |
14c0b97d | 52 | #include <net/fib_rules.h> |
e2849863 | 53 | #include <net/rtnetlink.h> |
711e2c33 JT |
54 | #ifdef CONFIG_NET_WIRELESS_RTNETLINK |
55 | #include <linux/wireless.h> | |
56 | #include <net/iw_handler.h> | |
57 | #endif /* CONFIG_NET_WIRELESS_RTNETLINK */ | |
1da177e4 | 58 | |
e2849863 TG |
59 | struct rtnl_link |
60 | { | |
61 | rtnl_doit_func doit; | |
62 | rtnl_dumpit_func dumpit; | |
63 | }; | |
64 | ||
6756ae4b | 65 | static DEFINE_MUTEX(rtnl_mutex); |
56fc85ac | 66 | static struct sock *rtnl; |
1da177e4 LT |
67 | |
68 | void rtnl_lock(void) | |
69 | { | |
6756ae4b | 70 | mutex_lock(&rtnl_mutex); |
1da177e4 LT |
71 | } |
72 | ||
6756ae4b | 73 | void __rtnl_unlock(void) |
1da177e4 | 74 | { |
6756ae4b | 75 | mutex_unlock(&rtnl_mutex); |
1da177e4 | 76 | } |
6756ae4b | 77 | |
1da177e4 LT |
78 | void rtnl_unlock(void) |
79 | { | |
6756ae4b SH |
80 | mutex_unlock(&rtnl_mutex); |
81 | if (rtnl && rtnl->sk_receive_queue.qlen) | |
82 | rtnl->sk_data_ready(rtnl, 0); | |
1da177e4 LT |
83 | netdev_run_todo(); |
84 | } | |
85 | ||
6756ae4b SH |
86 | int rtnl_trylock(void) |
87 | { | |
88 | return mutex_trylock(&rtnl_mutex); | |
89 | } | |
90 | ||
1da177e4 LT |
91 | int rtattr_parse(struct rtattr *tb[], int maxattr, struct rtattr *rta, int len) |
92 | { | |
93 | memset(tb, 0, sizeof(struct rtattr*)*maxattr); | |
94 | ||
95 | while (RTA_OK(rta, len)) { | |
96 | unsigned flavor = rta->rta_type; | |
97 | if (flavor && flavor <= maxattr) | |
98 | tb[flavor-1] = rta; | |
99 | rta = RTA_NEXT(rta, len); | |
100 | } | |
101 | return 0; | |
102 | } | |
103 | ||
e2849863 TG |
104 | struct rtnl_link *rtnl_msg_handlers[NPROTO]; |
105 | ||
106 | static inline int rtm_msgindex(int msgtype) | |
107 | { | |
108 | int msgindex = msgtype - RTM_BASE; | |
109 | ||
110 | /* | |
111 | * msgindex < 0 implies someone tried to register a netlink | |
112 | * control code. msgindex >= RTM_NR_MSGTYPES may indicate that | |
113 | * the message type has not been added to linux/rtnetlink.h | |
114 | */ | |
115 | BUG_ON(msgindex < 0 || msgindex >= RTM_NR_MSGTYPES); | |
116 | ||
117 | return msgindex; | |
118 | } | |
119 | ||
120 | static rtnl_doit_func rtnl_get_doit(int protocol, int msgindex) | |
121 | { | |
122 | struct rtnl_link *tab; | |
123 | ||
124 | tab = rtnl_msg_handlers[protocol]; | |
51057f2f | 125 | if (tab == NULL || tab[msgindex].doit == NULL) |
e2849863 TG |
126 | tab = rtnl_msg_handlers[PF_UNSPEC]; |
127 | ||
51057f2f | 128 | return tab ? tab[msgindex].doit : NULL; |
e2849863 TG |
129 | } |
130 | ||
131 | static rtnl_dumpit_func rtnl_get_dumpit(int protocol, int msgindex) | |
132 | { | |
133 | struct rtnl_link *tab; | |
134 | ||
135 | tab = rtnl_msg_handlers[protocol]; | |
51057f2f | 136 | if (tab == NULL || tab[msgindex].dumpit == NULL) |
e2849863 TG |
137 | tab = rtnl_msg_handlers[PF_UNSPEC]; |
138 | ||
51057f2f | 139 | return tab ? tab[msgindex].dumpit : NULL; |
e2849863 TG |
140 | } |
141 | ||
142 | /** | |
143 | * __rtnl_register - Register a rtnetlink message type | |
144 | * @protocol: Protocol family or PF_UNSPEC | |
145 | * @msgtype: rtnetlink message type | |
146 | * @doit: Function pointer called for each request message | |
147 | * @dumpit: Function pointer called for each dump request (NLM_F_DUMP) message | |
148 | * | |
149 | * Registers the specified function pointers (at least one of them has | |
150 | * to be non-NULL) to be called whenever a request message for the | |
151 | * specified protocol family and message type is received. | |
152 | * | |
153 | * The special protocol family PF_UNSPEC may be used to define fallback | |
154 | * function pointers for the case when no entry for the specific protocol | |
155 | * family exists. | |
156 | * | |
157 | * Returns 0 on success or a negative error code. | |
158 | */ | |
159 | int __rtnl_register(int protocol, int msgtype, | |
160 | rtnl_doit_func doit, rtnl_dumpit_func dumpit) | |
161 | { | |
162 | struct rtnl_link *tab; | |
163 | int msgindex; | |
164 | ||
165 | BUG_ON(protocol < 0 || protocol >= NPROTO); | |
166 | msgindex = rtm_msgindex(msgtype); | |
167 | ||
168 | tab = rtnl_msg_handlers[protocol]; | |
169 | if (tab == NULL) { | |
170 | tab = kcalloc(RTM_NR_MSGTYPES, sizeof(*tab), GFP_KERNEL); | |
171 | if (tab == NULL) | |
172 | return -ENOBUFS; | |
173 | ||
174 | rtnl_msg_handlers[protocol] = tab; | |
175 | } | |
176 | ||
177 | if (doit) | |
178 | tab[msgindex].doit = doit; | |
179 | ||
180 | if (dumpit) | |
181 | tab[msgindex].dumpit = dumpit; | |
182 | ||
183 | return 0; | |
184 | } | |
185 | ||
186 | EXPORT_SYMBOL_GPL(__rtnl_register); | |
187 | ||
188 | /** | |
189 | * rtnl_register - Register a rtnetlink message type | |
190 | * | |
191 | * Identical to __rtnl_register() but panics on failure. This is useful | |
192 | * as failure of this function is very unlikely, it can only happen due | |
193 | * to lack of memory when allocating the chain to store all message | |
194 | * handlers for a protocol. Meant for use in init functions where lack | |
195 | * of memory implies no sense in continueing. | |
196 | */ | |
197 | void rtnl_register(int protocol, int msgtype, | |
198 | rtnl_doit_func doit, rtnl_dumpit_func dumpit) | |
199 | { | |
200 | if (__rtnl_register(protocol, msgtype, doit, dumpit) < 0) | |
201 | panic("Unable to register rtnetlink message handler, " | |
202 | "protocol = %d, message type = %d\n", | |
203 | protocol, msgtype); | |
204 | } | |
205 | ||
206 | EXPORT_SYMBOL_GPL(rtnl_register); | |
207 | ||
208 | /** | |
209 | * rtnl_unregister - Unregister a rtnetlink message type | |
210 | * @protocol: Protocol family or PF_UNSPEC | |
211 | * @msgtype: rtnetlink message type | |
212 | * | |
213 | * Returns 0 on success or a negative error code. | |
214 | */ | |
215 | int rtnl_unregister(int protocol, int msgtype) | |
216 | { | |
217 | int msgindex; | |
218 | ||
219 | BUG_ON(protocol < 0 || protocol >= NPROTO); | |
220 | msgindex = rtm_msgindex(msgtype); | |
221 | ||
222 | if (rtnl_msg_handlers[protocol] == NULL) | |
223 | return -ENOENT; | |
224 | ||
225 | rtnl_msg_handlers[protocol][msgindex].doit = NULL; | |
226 | rtnl_msg_handlers[protocol][msgindex].dumpit = NULL; | |
227 | ||
228 | return 0; | |
229 | } | |
230 | ||
231 | EXPORT_SYMBOL_GPL(rtnl_unregister); | |
232 | ||
233 | /** | |
234 | * rtnl_unregister_all - Unregister all rtnetlink message type of a protocol | |
235 | * @protocol : Protocol family or PF_UNSPEC | |
236 | * | |
237 | * Identical to calling rtnl_unregster() for all registered message types | |
238 | * of a certain protocol family. | |
239 | */ | |
240 | void rtnl_unregister_all(int protocol) | |
241 | { | |
242 | BUG_ON(protocol < 0 || protocol >= NPROTO); | |
243 | ||
244 | kfree(rtnl_msg_handlers[protocol]); | |
245 | rtnl_msg_handlers[protocol] = NULL; | |
246 | } | |
247 | ||
248 | EXPORT_SYMBOL_GPL(rtnl_unregister_all); | |
1da177e4 | 249 | |
db46edc6 | 250 | static const int rtm_min[RTM_NR_FAMILIES] = |
1da177e4 | 251 | { |
f90a0a74 TG |
252 | [RTM_FAM(RTM_NEWLINK)] = NLMSG_LENGTH(sizeof(struct ifinfomsg)), |
253 | [RTM_FAM(RTM_NEWADDR)] = NLMSG_LENGTH(sizeof(struct ifaddrmsg)), | |
254 | [RTM_FAM(RTM_NEWROUTE)] = NLMSG_LENGTH(sizeof(struct rtmsg)), | |
14c0b97d | 255 | [RTM_FAM(RTM_NEWRULE)] = NLMSG_LENGTH(sizeof(struct fib_rule_hdr)), |
f90a0a74 TG |
256 | [RTM_FAM(RTM_NEWQDISC)] = NLMSG_LENGTH(sizeof(struct tcmsg)), |
257 | [RTM_FAM(RTM_NEWTCLASS)] = NLMSG_LENGTH(sizeof(struct tcmsg)), | |
258 | [RTM_FAM(RTM_NEWTFILTER)] = NLMSG_LENGTH(sizeof(struct tcmsg)), | |
259 | [RTM_FAM(RTM_NEWACTION)] = NLMSG_LENGTH(sizeof(struct tcamsg)), | |
f90a0a74 TG |
260 | [RTM_FAM(RTM_GETMULTICAST)] = NLMSG_LENGTH(sizeof(struct rtgenmsg)), |
261 | [RTM_FAM(RTM_GETANYCAST)] = NLMSG_LENGTH(sizeof(struct rtgenmsg)), | |
1da177e4 LT |
262 | }; |
263 | ||
db46edc6 | 264 | static const int rta_max[RTM_NR_FAMILIES] = |
1da177e4 | 265 | { |
f90a0a74 TG |
266 | [RTM_FAM(RTM_NEWLINK)] = IFLA_MAX, |
267 | [RTM_FAM(RTM_NEWADDR)] = IFA_MAX, | |
268 | [RTM_FAM(RTM_NEWROUTE)] = RTA_MAX, | |
14c0b97d | 269 | [RTM_FAM(RTM_NEWRULE)] = FRA_MAX, |
f90a0a74 TG |
270 | [RTM_FAM(RTM_NEWQDISC)] = TCA_MAX, |
271 | [RTM_FAM(RTM_NEWTCLASS)] = TCA_MAX, | |
272 | [RTM_FAM(RTM_NEWTFILTER)] = TCA_MAX, | |
273 | [RTM_FAM(RTM_NEWACTION)] = TCAA_MAX, | |
1da177e4 LT |
274 | }; |
275 | ||
276 | void __rta_fill(struct sk_buff *skb, int attrtype, int attrlen, const void *data) | |
277 | { | |
278 | struct rtattr *rta; | |
279 | int size = RTA_LENGTH(attrlen); | |
280 | ||
281 | rta = (struct rtattr*)skb_put(skb, RTA_ALIGN(size)); | |
282 | rta->rta_type = attrtype; | |
283 | rta->rta_len = size; | |
284 | memcpy(RTA_DATA(rta), data, attrlen); | |
b3563c4f | 285 | memset(RTA_DATA(rta) + attrlen, 0, RTA_ALIGN(size) - size); |
1da177e4 LT |
286 | } |
287 | ||
288 | size_t rtattr_strlcpy(char *dest, const struct rtattr *rta, size_t size) | |
289 | { | |
290 | size_t ret = RTA_PAYLOAD(rta); | |
291 | char *src = RTA_DATA(rta); | |
292 | ||
293 | if (ret > 0 && src[ret - 1] == '\0') | |
294 | ret--; | |
295 | if (size > 0) { | |
296 | size_t len = (ret >= size) ? size - 1 : ret; | |
297 | memset(dest, 0, size); | |
298 | memcpy(dest, src, len); | |
299 | } | |
300 | return ret; | |
301 | } | |
302 | ||
303 | int rtnetlink_send(struct sk_buff *skb, u32 pid, unsigned group, int echo) | |
304 | { | |
305 | int err = 0; | |
306 | ||
ac6d439d | 307 | NETLINK_CB(skb).dst_group = group; |
1da177e4 LT |
308 | if (echo) |
309 | atomic_inc(&skb->users); | |
310 | netlink_broadcast(rtnl, skb, pid, group, GFP_KERNEL); | |
311 | if (echo) | |
312 | err = netlink_unicast(rtnl, skb, pid, MSG_DONTWAIT); | |
313 | return err; | |
314 | } | |
315 | ||
2942e900 TG |
316 | int rtnl_unicast(struct sk_buff *skb, u32 pid) |
317 | { | |
318 | return nlmsg_unicast(rtnl, skb, pid); | |
319 | } | |
320 | ||
97676b6b TG |
321 | int rtnl_notify(struct sk_buff *skb, u32 pid, u32 group, |
322 | struct nlmsghdr *nlh, gfp_t flags) | |
323 | { | |
324 | int report = 0; | |
325 | ||
326 | if (nlh) | |
327 | report = nlmsg_report(nlh); | |
328 | ||
329 | return nlmsg_notify(rtnl, skb, pid, group, report, flags); | |
330 | } | |
331 | ||
332 | void rtnl_set_sk_err(u32 group, int error) | |
333 | { | |
334 | netlink_set_err(rtnl, 0, group, error); | |
335 | } | |
336 | ||
1da177e4 LT |
337 | int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics) |
338 | { | |
2d7202bf TG |
339 | struct nlattr *mx; |
340 | int i, valid = 0; | |
341 | ||
342 | mx = nla_nest_start(skb, RTA_METRICS); | |
343 | if (mx == NULL) | |
344 | return -ENOBUFS; | |
345 | ||
346 | for (i = 0; i < RTAX_MAX; i++) { | |
347 | if (metrics[i]) { | |
348 | valid++; | |
349 | NLA_PUT_U32(skb, i+1, metrics[i]); | |
350 | } | |
1da177e4 | 351 | } |
1da177e4 | 352 | |
a57d27fc DM |
353 | if (!valid) { |
354 | nla_nest_cancel(skb, mx); | |
355 | return 0; | |
356 | } | |
2d7202bf TG |
357 | |
358 | return nla_nest_end(skb, mx); | |
359 | ||
360 | nla_put_failure: | |
361 | return nla_nest_cancel(skb, mx); | |
1da177e4 LT |
362 | } |
363 | ||
e3703b3d TG |
364 | int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst, u32 id, |
365 | u32 ts, u32 tsage, long expires, u32 error) | |
366 | { | |
367 | struct rta_cacheinfo ci = { | |
368 | .rta_lastuse = jiffies_to_clock_t(jiffies - dst->lastuse), | |
369 | .rta_used = dst->__use, | |
370 | .rta_clntref = atomic_read(&(dst->__refcnt)), | |
371 | .rta_error = error, | |
372 | .rta_id = id, | |
373 | .rta_ts = ts, | |
374 | .rta_tsage = tsage, | |
375 | }; | |
376 | ||
377 | if (expires) | |
378 | ci.rta_expires = jiffies_to_clock_t(expires); | |
379 | ||
380 | return nla_put(skb, RTA_CACHEINFO, sizeof(ci), &ci); | |
381 | } | |
382 | ||
383 | EXPORT_SYMBOL_GPL(rtnl_put_cacheinfo); | |
1da177e4 | 384 | |
b00055aa SR |
385 | static void set_operstate(struct net_device *dev, unsigned char transition) |
386 | { | |
387 | unsigned char operstate = dev->operstate; | |
388 | ||
389 | switch(transition) { | |
390 | case IF_OPER_UP: | |
391 | if ((operstate == IF_OPER_DORMANT || | |
392 | operstate == IF_OPER_UNKNOWN) && | |
393 | !netif_dormant(dev)) | |
394 | operstate = IF_OPER_UP; | |
395 | break; | |
396 | ||
397 | case IF_OPER_DORMANT: | |
398 | if (operstate == IF_OPER_UP || | |
399 | operstate == IF_OPER_UNKNOWN) | |
400 | operstate = IF_OPER_DORMANT; | |
401 | break; | |
402 | }; | |
403 | ||
404 | if (dev->operstate != operstate) { | |
405 | write_lock_bh(&dev_base_lock); | |
406 | dev->operstate = operstate; | |
407 | write_unlock_bh(&dev_base_lock); | |
408 | netdev_state_change(dev); | |
409 | } | |
410 | } | |
411 | ||
b60c5115 TG |
412 | static void copy_rtnl_link_stats(struct rtnl_link_stats *a, |
413 | struct net_device_stats *b) | |
1da177e4 | 414 | { |
b60c5115 TG |
415 | a->rx_packets = b->rx_packets; |
416 | a->tx_packets = b->tx_packets; | |
417 | a->rx_bytes = b->rx_bytes; | |
418 | a->tx_bytes = b->tx_bytes; | |
419 | a->rx_errors = b->rx_errors; | |
420 | a->tx_errors = b->tx_errors; | |
421 | a->rx_dropped = b->rx_dropped; | |
422 | a->tx_dropped = b->tx_dropped; | |
423 | ||
424 | a->multicast = b->multicast; | |
425 | a->collisions = b->collisions; | |
426 | ||
427 | a->rx_length_errors = b->rx_length_errors; | |
428 | a->rx_over_errors = b->rx_over_errors; | |
429 | a->rx_crc_errors = b->rx_crc_errors; | |
430 | a->rx_frame_errors = b->rx_frame_errors; | |
431 | a->rx_fifo_errors = b->rx_fifo_errors; | |
432 | a->rx_missed_errors = b->rx_missed_errors; | |
433 | ||
434 | a->tx_aborted_errors = b->tx_aborted_errors; | |
435 | a->tx_carrier_errors = b->tx_carrier_errors; | |
436 | a->tx_fifo_errors = b->tx_fifo_errors; | |
437 | a->tx_heartbeat_errors = b->tx_heartbeat_errors; | |
438 | a->tx_window_errors = b->tx_window_errors; | |
439 | ||
440 | a->rx_compressed = b->rx_compressed; | |
441 | a->tx_compressed = b->tx_compressed; | |
442 | }; | |
1da177e4 | 443 | |
339bf98f TG |
444 | static inline size_t if_nlmsg_size(int iwbuflen) |
445 | { | |
446 | return NLMSG_ALIGN(sizeof(struct ifinfomsg)) | |
447 | + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */ | |
448 | + nla_total_size(IFNAMSIZ) /* IFLA_QDISC */ | |
449 | + nla_total_size(sizeof(struct rtnl_link_ifmap)) | |
450 | + nla_total_size(sizeof(struct rtnl_link_stats)) | |
451 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */ | |
452 | + nla_total_size(MAX_ADDR_LEN) /* IFLA_BROADCAST */ | |
453 | + nla_total_size(4) /* IFLA_TXQLEN */ | |
454 | + nla_total_size(4) /* IFLA_WEIGHT */ | |
455 | + nla_total_size(4) /* IFLA_MTU */ | |
456 | + nla_total_size(4) /* IFLA_LINK */ | |
457 | + nla_total_size(4) /* IFLA_MASTER */ | |
458 | + nla_total_size(1) /* IFLA_OPERSTATE */ | |
459 | + nla_total_size(1) /* IFLA_LINKMODE */ | |
460 | + nla_total_size(iwbuflen); | |
461 | } | |
462 | ||
b60c5115 TG |
463 | static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev, |
464 | void *iwbuf, int iwbuflen, int type, u32 pid, | |
465 | u32 seq, u32 change, unsigned int flags) | |
466 | { | |
467 | struct ifinfomsg *ifm; | |
468 | struct nlmsghdr *nlh; | |
1da177e4 | 469 | |
b60c5115 TG |
470 | nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ifm), flags); |
471 | if (nlh == NULL) | |
26932566 | 472 | return -EMSGSIZE; |
1da177e4 | 473 | |
b60c5115 TG |
474 | ifm = nlmsg_data(nlh); |
475 | ifm->ifi_family = AF_UNSPEC; | |
476 | ifm->__ifi_pad = 0; | |
477 | ifm->ifi_type = dev->type; | |
478 | ifm->ifi_index = dev->ifindex; | |
479 | ifm->ifi_flags = dev_get_flags(dev); | |
480 | ifm->ifi_change = change; | |
481 | ||
482 | NLA_PUT_STRING(skb, IFLA_IFNAME, dev->name); | |
483 | NLA_PUT_U32(skb, IFLA_TXQLEN, dev->tx_queue_len); | |
484 | NLA_PUT_U32(skb, IFLA_WEIGHT, dev->weight); | |
485 | NLA_PUT_U8(skb, IFLA_OPERSTATE, | |
486 | netif_running(dev) ? dev->operstate : IF_OPER_DOWN); | |
487 | NLA_PUT_U8(skb, IFLA_LINKMODE, dev->link_mode); | |
488 | NLA_PUT_U32(skb, IFLA_MTU, dev->mtu); | |
489 | ||
490 | if (dev->ifindex != dev->iflink) | |
491 | NLA_PUT_U32(skb, IFLA_LINK, dev->iflink); | |
492 | ||
493 | if (dev->master) | |
494 | NLA_PUT_U32(skb, IFLA_MASTER, dev->master->ifindex); | |
1da177e4 | 495 | |
b60c5115 TG |
496 | if (dev->qdisc_sleeping) |
497 | NLA_PUT_STRING(skb, IFLA_QDISC, dev->qdisc_sleeping->ops->id); | |
b00055aa | 498 | |
1da177e4 LT |
499 | if (1) { |
500 | struct rtnl_link_ifmap map = { | |
501 | .mem_start = dev->mem_start, | |
502 | .mem_end = dev->mem_end, | |
503 | .base_addr = dev->base_addr, | |
504 | .irq = dev->irq, | |
505 | .dma = dev->dma, | |
506 | .port = dev->if_port, | |
507 | }; | |
b60c5115 | 508 | NLA_PUT(skb, IFLA_MAP, sizeof(map), &map); |
1da177e4 LT |
509 | } |
510 | ||
511 | if (dev->addr_len) { | |
b60c5115 TG |
512 | NLA_PUT(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr); |
513 | NLA_PUT(skb, IFLA_BROADCAST, dev->addr_len, dev->broadcast); | |
1da177e4 LT |
514 | } |
515 | ||
516 | if (dev->get_stats) { | |
b60c5115 | 517 | struct net_device_stats *stats = dev->get_stats(dev); |
1da177e4 | 518 | if (stats) { |
b60c5115 TG |
519 | struct nlattr *attr; |
520 | ||
521 | attr = nla_reserve(skb, IFLA_STATS, | |
522 | sizeof(struct rtnl_link_stats)); | |
523 | if (attr == NULL) | |
524 | goto nla_put_failure; | |
525 | ||
526 | copy_rtnl_link_stats(nla_data(attr), stats); | |
1da177e4 LT |
527 | } |
528 | } | |
1da177e4 | 529 | |
b60c5115 TG |
530 | if (iwbuf) |
531 | NLA_PUT(skb, IFLA_WIRELESS, iwbuflen, iwbuf); | |
532 | ||
533 | return nlmsg_end(skb, nlh); | |
534 | ||
535 | nla_put_failure: | |
26932566 PM |
536 | nlmsg_cancel(skb, nlh); |
537 | return -EMSGSIZE; | |
1da177e4 LT |
538 | } |
539 | ||
b60c5115 | 540 | static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb) |
1da177e4 LT |
541 | { |
542 | int idx; | |
543 | int s_idx = cb->args[0]; | |
544 | struct net_device *dev; | |
545 | ||
546 | read_lock(&dev_base_lock); | |
547 | for (dev=dev_base, idx=0; dev; dev = dev->next, idx++) { | |
548 | if (idx < s_idx) | |
549 | continue; | |
b60c5115 TG |
550 | if (rtnl_fill_ifinfo(skb, dev, NULL, 0, RTM_NEWLINK, |
551 | NETLINK_CB(cb->skb).pid, | |
552 | cb->nlh->nlmsg_seq, 0, NLM_F_MULTI) <= 0) | |
1da177e4 LT |
553 | break; |
554 | } | |
555 | read_unlock(&dev_base_lock); | |
556 | cb->args[0] = idx; | |
557 | ||
558 | return skb->len; | |
559 | } | |
560 | ||
da5e0494 | 561 | static struct nla_policy ifla_policy[IFLA_MAX+1] __read_mostly = { |
5176f91e TG |
562 | [IFLA_IFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ-1 }, |
563 | [IFLA_MAP] = { .len = sizeof(struct rtnl_link_ifmap) }, | |
da5e0494 TG |
564 | [IFLA_MTU] = { .type = NLA_U32 }, |
565 | [IFLA_TXQLEN] = { .type = NLA_U32 }, | |
566 | [IFLA_WEIGHT] = { .type = NLA_U32 }, | |
567 | [IFLA_OPERSTATE] = { .type = NLA_U8 }, | |
568 | [IFLA_LINKMODE] = { .type = NLA_U8 }, | |
569 | }; | |
570 | ||
571 | static int rtnl_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) | |
1da177e4 | 572 | { |
da5e0494 | 573 | struct ifinfomsg *ifm; |
1da177e4 | 574 | struct net_device *dev; |
da5e0494 TG |
575 | int err, send_addr_notify = 0, modified = 0; |
576 | struct nlattr *tb[IFLA_MAX+1]; | |
577 | char ifname[IFNAMSIZ]; | |
1da177e4 | 578 | |
da5e0494 TG |
579 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); |
580 | if (err < 0) | |
581 | goto errout; | |
582 | ||
5176f91e TG |
583 | if (tb[IFLA_IFNAME]) |
584 | nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ); | |
78e5b891 PM |
585 | else |
586 | ifname[0] = '\0'; | |
da5e0494 TG |
587 | |
588 | err = -EINVAL; | |
589 | ifm = nlmsg_data(nlh); | |
1da177e4 LT |
590 | if (ifm->ifi_index >= 0) |
591 | dev = dev_get_by_index(ifm->ifi_index); | |
da5e0494 | 592 | else if (tb[IFLA_IFNAME]) |
1da177e4 | 593 | dev = dev_get_by_name(ifname); |
da5e0494 TG |
594 | else |
595 | goto errout; | |
1da177e4 | 596 | |
da5e0494 TG |
597 | if (dev == NULL) { |
598 | err = -ENODEV; | |
599 | goto errout; | |
600 | } | |
1da177e4 | 601 | |
da5e0494 TG |
602 | if (tb[IFLA_ADDRESS] && |
603 | nla_len(tb[IFLA_ADDRESS]) < dev->addr_len) | |
604 | goto errout_dev; | |
1da177e4 | 605 | |
da5e0494 TG |
606 | if (tb[IFLA_BROADCAST] && |
607 | nla_len(tb[IFLA_BROADCAST]) < dev->addr_len) | |
608 | goto errout_dev; | |
1da177e4 | 609 | |
da5e0494 | 610 | if (tb[IFLA_MAP]) { |
1da177e4 LT |
611 | struct rtnl_link_ifmap *u_map; |
612 | struct ifmap k_map; | |
613 | ||
614 | if (!dev->set_config) { | |
615 | err = -EOPNOTSUPP; | |
da5e0494 | 616 | goto errout_dev; |
1da177e4 LT |
617 | } |
618 | ||
619 | if (!netif_device_present(dev)) { | |
620 | err = -ENODEV; | |
da5e0494 | 621 | goto errout_dev; |
1da177e4 | 622 | } |
1da177e4 | 623 | |
da5e0494 | 624 | u_map = nla_data(tb[IFLA_MAP]); |
1da177e4 LT |
625 | k_map.mem_start = (unsigned long) u_map->mem_start; |
626 | k_map.mem_end = (unsigned long) u_map->mem_end; | |
627 | k_map.base_addr = (unsigned short) u_map->base_addr; | |
628 | k_map.irq = (unsigned char) u_map->irq; | |
629 | k_map.dma = (unsigned char) u_map->dma; | |
630 | k_map.port = (unsigned char) u_map->port; | |
631 | ||
632 | err = dev->set_config(dev, &k_map); | |
da5e0494 TG |
633 | if (err < 0) |
634 | goto errout_dev; | |
1da177e4 | 635 | |
da5e0494 | 636 | modified = 1; |
1da177e4 LT |
637 | } |
638 | ||
da5e0494 | 639 | if (tb[IFLA_ADDRESS]) { |
70f8e78e DM |
640 | struct sockaddr *sa; |
641 | int len; | |
642 | ||
1da177e4 LT |
643 | if (!dev->set_mac_address) { |
644 | err = -EOPNOTSUPP; | |
da5e0494 | 645 | goto errout_dev; |
1da177e4 | 646 | } |
da5e0494 | 647 | |
1da177e4 LT |
648 | if (!netif_device_present(dev)) { |
649 | err = -ENODEV; | |
da5e0494 | 650 | goto errout_dev; |
1da177e4 | 651 | } |
1da177e4 | 652 | |
70f8e78e DM |
653 | len = sizeof(sa_family_t) + dev->addr_len; |
654 | sa = kmalloc(len, GFP_KERNEL); | |
655 | if (!sa) { | |
656 | err = -ENOMEM; | |
da5e0494 | 657 | goto errout_dev; |
70f8e78e DM |
658 | } |
659 | sa->sa_family = dev->type; | |
da5e0494 | 660 | memcpy(sa->sa_data, nla_data(tb[IFLA_ADDRESS]), |
70f8e78e DM |
661 | dev->addr_len); |
662 | err = dev->set_mac_address(dev, sa); | |
663 | kfree(sa); | |
1da177e4 | 664 | if (err) |
da5e0494 | 665 | goto errout_dev; |
1da177e4 | 666 | send_addr_notify = 1; |
da5e0494 | 667 | modified = 1; |
1da177e4 LT |
668 | } |
669 | ||
da5e0494 TG |
670 | if (tb[IFLA_MTU]) { |
671 | err = dev_set_mtu(dev, nla_get_u32(tb[IFLA_MTU])); | |
672 | if (err < 0) | |
673 | goto errout_dev; | |
674 | modified = 1; | |
1da177e4 LT |
675 | } |
676 | ||
da5e0494 TG |
677 | /* |
678 | * Interface selected by interface index but interface | |
679 | * name provided implies that a name change has been | |
680 | * requested. | |
681 | */ | |
682 | if (ifm->ifi_index >= 0 && ifname[0]) { | |
683 | err = dev_change_name(dev, ifname); | |
684 | if (err < 0) | |
685 | goto errout_dev; | |
686 | modified = 1; | |
1da177e4 LT |
687 | } |
688 | ||
da5e0494 TG |
689 | #ifdef CONFIG_NET_WIRELESS_RTNETLINK |
690 | if (tb[IFLA_WIRELESS]) { | |
691 | /* Call Wireless Extensions. | |
692 | * Various stuff checked in there... */ | |
693 | err = wireless_rtnetlink_set(dev, nla_data(tb[IFLA_WIRELESS]), | |
694 | nla_len(tb[IFLA_WIRELESS])); | |
695 | if (err < 0) | |
696 | goto errout_dev; | |
697 | } | |
698 | #endif /* CONFIG_NET_WIRELESS_RTNETLINK */ | |
1da177e4 | 699 | |
da5e0494 TG |
700 | if (tb[IFLA_BROADCAST]) { |
701 | nla_memcpy(dev->broadcast, tb[IFLA_BROADCAST], dev->addr_len); | |
702 | send_addr_notify = 1; | |
1da177e4 LT |
703 | } |
704 | ||
1da177e4 | 705 | |
da5e0494 TG |
706 | if (ifm->ifi_flags) |
707 | dev_change_flags(dev, ifm->ifi_flags); | |
1da177e4 | 708 | |
da5e0494 TG |
709 | if (tb[IFLA_TXQLEN]) |
710 | dev->tx_queue_len = nla_get_u32(tb[IFLA_TXQLEN]); | |
b00055aa | 711 | |
da5e0494 TG |
712 | if (tb[IFLA_WEIGHT]) |
713 | dev->weight = nla_get_u32(tb[IFLA_WEIGHT]); | |
b00055aa | 714 | |
da5e0494 TG |
715 | if (tb[IFLA_OPERSTATE]) |
716 | set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE])); | |
b00055aa | 717 | |
da5e0494 | 718 | if (tb[IFLA_LINKMODE]) { |
b00055aa | 719 | write_lock_bh(&dev_base_lock); |
da5e0494 | 720 | dev->link_mode = nla_get_u8(tb[IFLA_LINKMODE]); |
b00055aa SR |
721 | write_unlock_bh(&dev_base_lock); |
722 | } | |
723 | ||
1da177e4 LT |
724 | err = 0; |
725 | ||
da5e0494 TG |
726 | errout_dev: |
727 | if (err < 0 && modified && net_ratelimit()) | |
728 | printk(KERN_WARNING "A link change request failed with " | |
729 | "some changes comitted already. Interface %s may " | |
730 | "have been left with an inconsistent configuration, " | |
731 | "please check.\n", dev->name); | |
732 | ||
1da177e4 LT |
733 | if (send_addr_notify) |
734 | call_netdevice_notifiers(NETDEV_CHANGEADDR, dev); | |
735 | ||
736 | dev_put(dev); | |
da5e0494 | 737 | errout: |
1da177e4 LT |
738 | return err; |
739 | } | |
740 | ||
b60c5115 | 741 | static int rtnl_getlink(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg) |
711e2c33 | 742 | { |
b60c5115 TG |
743 | struct ifinfomsg *ifm; |
744 | struct nlattr *tb[IFLA_MAX+1]; | |
745 | struct net_device *dev = NULL; | |
746 | struct sk_buff *nskb; | |
747 | char *iw_buf = NULL, *iw = NULL; | |
711e2c33 | 748 | int iw_buf_len = 0; |
339bf98f | 749 | int err; |
711e2c33 | 750 | |
b60c5115 TG |
751 | err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy); |
752 | if (err < 0) | |
9918f230 | 753 | return err; |
b60c5115 TG |
754 | |
755 | ifm = nlmsg_data(nlh); | |
756 | if (ifm->ifi_index >= 0) { | |
711e2c33 | 757 | dev = dev_get_by_index(ifm->ifi_index); |
b60c5115 TG |
758 | if (dev == NULL) |
759 | return -ENODEV; | |
760 | } else | |
711e2c33 | 761 | return -EINVAL; |
711e2c33 | 762 | |
711e2c33 | 763 | |
b60c5115 TG |
764 | #ifdef CONFIG_NET_WIRELESS_RTNETLINK |
765 | if (tb[IFLA_WIRELESS]) { | |
711e2c33 JT |
766 | /* Call Wireless Extensions. We need to know the size before |
767 | * we can alloc. Various stuff checked in there... */ | |
b60c5115 TG |
768 | err = wireless_rtnetlink_get(dev, nla_data(tb[IFLA_WIRELESS]), |
769 | nla_len(tb[IFLA_WIRELESS]), | |
770 | &iw_buf, &iw_buf_len); | |
771 | if (err < 0) | |
772 | goto errout; | |
773 | ||
c2805fbb JT |
774 | /* Payload is at an offset in buffer */ |
775 | iw = iw_buf + IW_EV_POINT_OFF; | |
711e2c33 JT |
776 | } |
777 | #endif /* CONFIG_NET_WIRELESS_RTNETLINK */ | |
778 | ||
339bf98f | 779 | nskb = nlmsg_new(if_nlmsg_size(iw_buf_len), GFP_KERNEL); |
b60c5115 TG |
780 | if (nskb == NULL) { |
781 | err = -ENOBUFS; | |
782 | goto errout; | |
783 | } | |
784 | ||
785 | err = rtnl_fill_ifinfo(nskb, dev, iw, iw_buf_len, RTM_NEWLINK, | |
786 | NETLINK_CB(skb).pid, nlh->nlmsg_seq, 0, 0); | |
26932566 PM |
787 | if (err < 0) { |
788 | /* -EMSGSIZE implies BUG in if_nlmsg_size */ | |
789 | WARN_ON(err == -EMSGSIZE); | |
790 | kfree_skb(nskb); | |
791 | goto errout; | |
792 | } | |
b974179a | 793 | err = rtnl_unicast(nskb, NETLINK_CB(skb).pid); |
b60c5115 TG |
794 | errout: |
795 | kfree(iw_buf); | |
711e2c33 | 796 | dev_put(dev); |
711e2c33 | 797 | |
b60c5115 | 798 | return err; |
711e2c33 | 799 | } |
711e2c33 | 800 | |
e2849863 | 801 | int rtnl_dump_all(struct sk_buff *skb, struct netlink_callback *cb) |
1da177e4 LT |
802 | { |
803 | int idx; | |
804 | int s_idx = cb->family; | |
805 | ||
806 | if (s_idx == 0) | |
807 | s_idx = 1; | |
808 | for (idx=1; idx<NPROTO; idx++) { | |
809 | int type = cb->nlh->nlmsg_type-RTM_BASE; | |
810 | if (idx < s_idx || idx == PF_PACKET) | |
811 | continue; | |
e2849863 TG |
812 | if (rtnl_msg_handlers[idx] == NULL || |
813 | rtnl_msg_handlers[idx][type].dumpit == NULL) | |
1da177e4 LT |
814 | continue; |
815 | if (idx > s_idx) | |
816 | memset(&cb->args[0], 0, sizeof(cb->args)); | |
e2849863 | 817 | if (rtnl_msg_handlers[idx][type].dumpit(skb, cb)) |
1da177e4 LT |
818 | break; |
819 | } | |
820 | cb->family = idx; | |
821 | ||
822 | return skb->len; | |
823 | } | |
824 | ||
e2849863 TG |
825 | EXPORT_SYMBOL_GPL(rtnl_dump_all); |
826 | ||
1da177e4 LT |
827 | void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change) |
828 | { | |
829 | struct sk_buff *skb; | |
0ec6d3f4 | 830 | int err = -ENOBUFS; |
1da177e4 | 831 | |
339bf98f | 832 | skb = nlmsg_new(if_nlmsg_size(0), GFP_KERNEL); |
0ec6d3f4 TG |
833 | if (skb == NULL) |
834 | goto errout; | |
1da177e4 | 835 | |
0ec6d3f4 | 836 | err = rtnl_fill_ifinfo(skb, dev, NULL, 0, type, 0, 0, change, 0); |
26932566 PM |
837 | if (err < 0) { |
838 | /* -EMSGSIZE implies BUG in if_nlmsg_size() */ | |
839 | WARN_ON(err == -EMSGSIZE); | |
840 | kfree_skb(skb); | |
841 | goto errout; | |
842 | } | |
0ec6d3f4 TG |
843 | err = rtnl_notify(skb, 0, RTNLGRP_LINK, NULL, GFP_KERNEL); |
844 | errout: | |
845 | if (err < 0) | |
846 | rtnl_set_sk_err(RTNLGRP_LINK, err); | |
1da177e4 LT |
847 | } |
848 | ||
1da177e4 LT |
849 | /* Protected by RTNL sempahore. */ |
850 | static struct rtattr **rta_buf; | |
851 | static int rtattr_max; | |
852 | ||
853 | /* Process one rtnetlink message. */ | |
854 | ||
1d00a4eb | 855 | static int rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh) |
1da177e4 | 856 | { |
e2849863 | 857 | rtnl_doit_func doit; |
1da177e4 LT |
858 | int sz_idx, kind; |
859 | int min_len; | |
860 | int family; | |
861 | int type; | |
862 | int err; | |
863 | ||
1da177e4 | 864 | type = nlh->nlmsg_type; |
1da177e4 | 865 | if (type > RTM_MAX) |
1d00a4eb | 866 | return -EINVAL; |
1da177e4 LT |
867 | |
868 | type -= RTM_BASE; | |
869 | ||
870 | /* All the messages must have at least 1 byte length */ | |
871 | if (nlh->nlmsg_len < NLMSG_LENGTH(sizeof(struct rtgenmsg))) | |
872 | return 0; | |
873 | ||
874 | family = ((struct rtgenmsg*)NLMSG_DATA(nlh))->rtgen_family; | |
1d00a4eb TG |
875 | if (family >= NPROTO) |
876 | return -EAFNOSUPPORT; | |
1da177e4 | 877 | |
1da177e4 LT |
878 | sz_idx = type>>2; |
879 | kind = type&3; | |
880 | ||
1d00a4eb TG |
881 | if (kind != 2 && security_netlink_recv(skb, CAP_NET_ADMIN)) |
882 | return -EPERM; | |
1da177e4 LT |
883 | |
884 | if (kind == 2 && nlh->nlmsg_flags&NLM_F_DUMP) { | |
e2849863 | 885 | rtnl_dumpit_func dumpit; |
1da177e4 | 886 | |
e2849863 TG |
887 | dumpit = rtnl_get_dumpit(family, type); |
888 | if (dumpit == NULL) | |
1d00a4eb | 889 | return -EINVAL; |
9ac4a169 | 890 | |
1d00a4eb TG |
891 | err = netlink_dump_start(rtnl, skb, nlh, dumpit, NULL); |
892 | if (err == 0) | |
893 | err = -EINTR; | |
894 | return err; | |
1da177e4 LT |
895 | } |
896 | ||
897 | memset(rta_buf, 0, (rtattr_max * sizeof(struct rtattr *))); | |
898 | ||
899 | min_len = rtm_min[sz_idx]; | |
900 | if (nlh->nlmsg_len < min_len) | |
1d00a4eb | 901 | return -EINVAL; |
1da177e4 LT |
902 | |
903 | if (nlh->nlmsg_len > min_len) { | |
904 | int attrlen = nlh->nlmsg_len - NLMSG_ALIGN(min_len); | |
905 | struct rtattr *attr = (void*)nlh + NLMSG_ALIGN(min_len); | |
906 | ||
907 | while (RTA_OK(attr, attrlen)) { | |
908 | unsigned flavor = attr->rta_type; | |
909 | if (flavor) { | |
910 | if (flavor > rta_max[sz_idx]) | |
1d00a4eb | 911 | return -EINVAL; |
1da177e4 LT |
912 | rta_buf[flavor-1] = attr; |
913 | } | |
914 | attr = RTA_NEXT(attr, attrlen); | |
915 | } | |
916 | } | |
917 | ||
e2849863 TG |
918 | doit = rtnl_get_doit(family, type); |
919 | if (doit == NULL) | |
1d00a4eb | 920 | return -EINVAL; |
1da177e4 | 921 | |
1d00a4eb | 922 | return doit(skb, nlh, (void *)&rta_buf[0]); |
1da177e4 LT |
923 | } |
924 | ||
1da177e4 LT |
925 | static void rtnetlink_rcv(struct sock *sk, int len) |
926 | { | |
9ac4a169 | 927 | unsigned int qlen = 0; |
2a0a6ebe | 928 | |
1da177e4 | 929 | do { |
6756ae4b | 930 | mutex_lock(&rtnl_mutex); |
9ac4a169 | 931 | netlink_run_queue(sk, &qlen, &rtnetlink_rcv_msg); |
6756ae4b | 932 | mutex_unlock(&rtnl_mutex); |
1da177e4 LT |
933 | |
934 | netdev_run_todo(); | |
2a0a6ebe | 935 | } while (qlen); |
1da177e4 LT |
936 | } |
937 | ||
1da177e4 LT |
938 | static int rtnetlink_event(struct notifier_block *this, unsigned long event, void *ptr) |
939 | { | |
940 | struct net_device *dev = ptr; | |
941 | switch (event) { | |
942 | case NETDEV_UNREGISTER: | |
943 | rtmsg_ifinfo(RTM_DELLINK, dev, ~0U); | |
944 | break; | |
945 | case NETDEV_REGISTER: | |
946 | rtmsg_ifinfo(RTM_NEWLINK, dev, ~0U); | |
947 | break; | |
948 | case NETDEV_UP: | |
949 | case NETDEV_DOWN: | |
950 | rtmsg_ifinfo(RTM_NEWLINK, dev, IFF_UP|IFF_RUNNING); | |
951 | break; | |
952 | case NETDEV_CHANGE: | |
953 | case NETDEV_GOING_DOWN: | |
954 | break; | |
955 | default: | |
956 | rtmsg_ifinfo(RTM_NEWLINK, dev, 0); | |
957 | break; | |
958 | } | |
959 | return NOTIFY_DONE; | |
960 | } | |
961 | ||
962 | static struct notifier_block rtnetlink_dev_notifier = { | |
963 | .notifier_call = rtnetlink_event, | |
964 | }; | |
965 | ||
966 | void __init rtnetlink_init(void) | |
967 | { | |
968 | int i; | |
969 | ||
970 | rtattr_max = 0; | |
971 | for (i = 0; i < ARRAY_SIZE(rta_max); i++) | |
972 | if (rta_max[i] > rtattr_max) | |
973 | rtattr_max = rta_max[i]; | |
974 | rta_buf = kmalloc(rtattr_max * sizeof(struct rtattr *), GFP_KERNEL); | |
975 | if (!rta_buf) | |
976 | panic("rtnetlink_init: cannot allocate rta_buf\n"); | |
977 | ||
06628607 | 978 | rtnl = netlink_kernel_create(NETLINK_ROUTE, RTNLGRP_MAX, rtnetlink_rcv, |
4ec93edb | 979 | THIS_MODULE); |
1da177e4 LT |
980 | if (rtnl == NULL) |
981 | panic("rtnetlink_init: cannot initialize rtnetlink\n"); | |
982 | netlink_set_nonroot(NETLINK_ROUTE, NL_NONROOT_RECV); | |
983 | register_netdevice_notifier(&rtnetlink_dev_notifier); | |
340d17fc TG |
984 | |
985 | rtnl_register(PF_UNSPEC, RTM_GETLINK, rtnl_getlink, rtnl_dump_ifinfo); | |
986 | rtnl_register(PF_UNSPEC, RTM_SETLINK, rtnl_setlink, NULL); | |
687ad8cc TG |
987 | |
988 | rtnl_register(PF_UNSPEC, RTM_GETADDR, NULL, rtnl_dump_all); | |
989 | rtnl_register(PF_UNSPEC, RTM_GETROUTE, NULL, rtnl_dump_all); | |
1da177e4 LT |
990 | } |
991 | ||
992 | EXPORT_SYMBOL(__rta_fill); | |
993 | EXPORT_SYMBOL(rtattr_strlcpy); | |
994 | EXPORT_SYMBOL(rtattr_parse); | |
1da177e4 | 995 | EXPORT_SYMBOL(rtnetlink_put_metrics); |
1da177e4 | 996 | EXPORT_SYMBOL(rtnl_lock); |
6756ae4b | 997 | EXPORT_SYMBOL(rtnl_trylock); |
1da177e4 | 998 | EXPORT_SYMBOL(rtnl_unlock); |
2942e900 | 999 | EXPORT_SYMBOL(rtnl_unicast); |
97676b6b TG |
1000 | EXPORT_SYMBOL(rtnl_notify); |
1001 | EXPORT_SYMBOL(rtnl_set_sk_err); |