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.
6 * Routing netlink socket interface: protocol independent part.
8 * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
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.
16 * Vitaly E. Lavrov RTA_OK arithmetics was wrong.
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/sched.h>
25 #include <linux/timer.h>
26 #include <linux/string.h>
27 #include <linux/sockios.h>
28 #include <linux/net.h>
29 #include <linux/fcntl.h>
31 #include <linux/slab.h>
32 #include <linux/interrupt.h>
33 #include <linux/capability.h>
34 #include <linux/skbuff.h>
35 #include <linux/init.h>
36 #include <linux/security.h>
37 #include <linux/mutex.h>
38 #include <linux/if_addr.h>
39 #include <linux/vs_context.h> /* remove with NXF_HIDE_NETIF */
41 #include <asm/uaccess.h>
42 #include <asm/system.h>
43 #include <asm/string.h>
45 #include <linux/inet.h>
46 #include <linux/netdevice.h>
48 #include <net/protocol.h>
50 #include <net/route.h>
53 #include <net/pkt_sched.h>
54 #include <net/fib_rules.h>
55 #include <net/netlink.h>
56 #ifdef CONFIG_NET_WIRELESS_RTNETLINK
57 #include <linux/wireless.h>
58 #include <net/iw_handler.h>
59 #endif /* CONFIG_NET_WIRELESS_RTNETLINK */
61 static DEFINE_MUTEX(rtnl_mutex);
62 static struct sock *rtnl;
66 mutex_lock(&rtnl_mutex);
69 void __rtnl_unlock(void)
71 mutex_unlock(&rtnl_mutex);
74 void rtnl_unlock(void)
76 mutex_unlock(&rtnl_mutex);
77 if (rtnl && rtnl->sk_receive_queue.qlen)
78 rtnl->sk_data_ready(rtnl, 0);
82 int rtnl_trylock(void)
84 return mutex_trylock(&rtnl_mutex);
87 int rtattr_parse(struct rtattr *tb[], int maxattr, struct rtattr *rta, int len)
89 memset(tb, 0, sizeof(struct rtattr*)*maxattr);
91 while (RTA_OK(rta, len)) {
92 unsigned flavor = rta->rta_type;
93 if (flavor && flavor <= maxattr)
95 rta = RTA_NEXT(rta, len);
100 struct rtnetlink_link * rtnetlink_links[NPROTO];
102 static const int rtm_min[RTM_NR_FAMILIES] =
104 [RTM_FAM(RTM_NEWLINK)] = NLMSG_LENGTH(sizeof(struct ifinfomsg)),
105 [RTM_FAM(RTM_NEWADDR)] = NLMSG_LENGTH(sizeof(struct ifaddrmsg)),
106 [RTM_FAM(RTM_NEWROUTE)] = NLMSG_LENGTH(sizeof(struct rtmsg)),
107 [RTM_FAM(RTM_NEWRULE)] = NLMSG_LENGTH(sizeof(struct fib_rule_hdr)),
108 [RTM_FAM(RTM_NEWQDISC)] = NLMSG_LENGTH(sizeof(struct tcmsg)),
109 [RTM_FAM(RTM_NEWTCLASS)] = NLMSG_LENGTH(sizeof(struct tcmsg)),
110 [RTM_FAM(RTM_NEWTFILTER)] = NLMSG_LENGTH(sizeof(struct tcmsg)),
111 [RTM_FAM(RTM_NEWACTION)] = NLMSG_LENGTH(sizeof(struct tcamsg)),
112 [RTM_FAM(RTM_GETMULTICAST)] = NLMSG_LENGTH(sizeof(struct rtgenmsg)),
113 [RTM_FAM(RTM_GETANYCAST)] = NLMSG_LENGTH(sizeof(struct rtgenmsg)),
116 static const int rta_max[RTM_NR_FAMILIES] =
118 [RTM_FAM(RTM_NEWLINK)] = IFLA_MAX,
119 [RTM_FAM(RTM_NEWADDR)] = IFA_MAX,
120 [RTM_FAM(RTM_NEWROUTE)] = RTA_MAX,
121 [RTM_FAM(RTM_NEWRULE)] = FRA_MAX,
122 [RTM_FAM(RTM_NEWQDISC)] = TCA_MAX,
123 [RTM_FAM(RTM_NEWTCLASS)] = TCA_MAX,
124 [RTM_FAM(RTM_NEWTFILTER)] = TCA_MAX,
125 [RTM_FAM(RTM_NEWACTION)] = TCAA_MAX,
128 void __rta_fill(struct sk_buff *skb, int attrtype, int attrlen, const void *data)
131 int size = RTA_LENGTH(attrlen);
133 rta = (struct rtattr*)skb_put(skb, RTA_ALIGN(size));
134 rta->rta_type = attrtype;
136 memcpy(RTA_DATA(rta), data, attrlen);
137 memset(RTA_DATA(rta) + attrlen, 0, RTA_ALIGN(size) - size);
140 size_t rtattr_strlcpy(char *dest, const struct rtattr *rta, size_t size)
142 size_t ret = RTA_PAYLOAD(rta);
143 char *src = RTA_DATA(rta);
145 if (ret > 0 && src[ret - 1] == '\0')
148 size_t len = (ret >= size) ? size - 1 : ret;
149 memset(dest, 0, size);
150 memcpy(dest, src, len);
155 int rtnetlink_send(struct sk_buff *skb, u32 pid, unsigned group, int echo)
159 NETLINK_CB(skb).dst_group = group;
161 atomic_inc(&skb->users);
162 netlink_broadcast(rtnl, skb, pid, group, GFP_KERNEL);
164 err = netlink_unicast(rtnl, skb, pid, MSG_DONTWAIT);
168 int rtnl_unicast(struct sk_buff *skb, u32 pid)
170 return nlmsg_unicast(rtnl, skb, pid);
173 int rtnl_notify(struct sk_buff *skb, u32 pid, u32 group,
174 struct nlmsghdr *nlh, gfp_t flags)
179 report = nlmsg_report(nlh);
181 return nlmsg_notify(rtnl, skb, pid, group, report, flags);
184 void rtnl_set_sk_err(u32 group, int error)
186 netlink_set_err(rtnl, 0, group, error);
189 int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics)
194 mx = nla_nest_start(skb, RTA_METRICS);
198 for (i = 0; i < RTAX_MAX; i++) {
201 NLA_PUT_U32(skb, i+1, metrics[i]);
206 nla_nest_cancel(skb, mx);
210 return nla_nest_end(skb, mx);
213 return nla_nest_cancel(skb, mx);
216 int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst, u32 id,
217 u32 ts, u32 tsage, long expires, u32 error)
219 struct rta_cacheinfo ci = {
220 .rta_lastuse = jiffies_to_clock_t(jiffies - dst->lastuse),
221 .rta_used = dst->__use,
222 .rta_clntref = atomic_read(&(dst->__refcnt)),
230 ci.rta_expires = jiffies_to_clock_t(expires);
232 return nla_put(skb, RTA_CACHEINFO, sizeof(ci), &ci);
235 EXPORT_SYMBOL_GPL(rtnl_put_cacheinfo);
237 static void set_operstate(struct net_device *dev, unsigned char transition)
239 unsigned char operstate = dev->operstate;
243 if ((operstate == IF_OPER_DORMANT ||
244 operstate == IF_OPER_UNKNOWN) &&
246 operstate = IF_OPER_UP;
249 case IF_OPER_DORMANT:
250 if (operstate == IF_OPER_UP ||
251 operstate == IF_OPER_UNKNOWN)
252 operstate = IF_OPER_DORMANT;
256 if (dev->operstate != operstate) {
257 write_lock_bh(&dev_base_lock);
258 dev->operstate = operstate;
259 write_unlock_bh(&dev_base_lock);
260 netdev_state_change(dev);
264 static void copy_rtnl_link_stats(struct rtnl_link_stats *a,
265 struct net_device_stats *b)
267 a->rx_packets = b->rx_packets;
268 a->tx_packets = b->tx_packets;
269 a->rx_bytes = b->rx_bytes;
270 a->tx_bytes = b->tx_bytes;
271 a->rx_errors = b->rx_errors;
272 a->tx_errors = b->tx_errors;
273 a->rx_dropped = b->rx_dropped;
274 a->tx_dropped = b->tx_dropped;
276 a->multicast = b->multicast;
277 a->collisions = b->collisions;
279 a->rx_length_errors = b->rx_length_errors;
280 a->rx_over_errors = b->rx_over_errors;
281 a->rx_crc_errors = b->rx_crc_errors;
282 a->rx_frame_errors = b->rx_frame_errors;
283 a->rx_fifo_errors = b->rx_fifo_errors;
284 a->rx_missed_errors = b->rx_missed_errors;
286 a->tx_aborted_errors = b->tx_aborted_errors;
287 a->tx_carrier_errors = b->tx_carrier_errors;
288 a->tx_fifo_errors = b->tx_fifo_errors;
289 a->tx_heartbeat_errors = b->tx_heartbeat_errors;
290 a->tx_window_errors = b->tx_window_errors;
292 a->rx_compressed = b->rx_compressed;
293 a->tx_compressed = b->tx_compressed;
296 static inline size_t if_nlmsg_size(int iwbuflen)
298 return NLMSG_ALIGN(sizeof(struct ifinfomsg))
299 + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */
300 + nla_total_size(IFNAMSIZ) /* IFLA_QDISC */
301 + nla_total_size(sizeof(struct rtnl_link_ifmap))
302 + nla_total_size(sizeof(struct rtnl_link_stats))
303 + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */
304 + nla_total_size(MAX_ADDR_LEN) /* IFLA_BROADCAST */
305 + nla_total_size(4) /* IFLA_TXQLEN */
306 + nla_total_size(4) /* IFLA_WEIGHT */
307 + nla_total_size(4) /* IFLA_MTU */
308 + nla_total_size(4) /* IFLA_LINK */
309 + nla_total_size(4) /* IFLA_MASTER */
310 + nla_total_size(1) /* IFLA_OPERSTATE */
311 + nla_total_size(1) /* IFLA_LINKMODE */
312 + nla_total_size(iwbuflen);
315 static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev,
316 void *iwbuf, int iwbuflen, int type, u32 pid,
317 u32 seq, u32 change, unsigned int flags)
319 struct ifinfomsg *ifm;
320 struct nlmsghdr *nlh;
322 nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ifm), flags);
326 ifm = nlmsg_data(nlh);
327 ifm->ifi_family = AF_UNSPEC;
329 ifm->ifi_type = dev->type;
330 ifm->ifi_index = dev->ifindex;
331 ifm->ifi_flags = dev_get_flags(dev);
332 ifm->ifi_change = change;
334 NLA_PUT_STRING(skb, IFLA_IFNAME, dev->name);
335 NLA_PUT_U32(skb, IFLA_TXQLEN, dev->tx_queue_len);
336 NLA_PUT_U32(skb, IFLA_WEIGHT, dev->weight);
337 NLA_PUT_U8(skb, IFLA_OPERSTATE,
338 netif_running(dev) ? dev->operstate : IF_OPER_DOWN);
339 NLA_PUT_U8(skb, IFLA_LINKMODE, dev->link_mode);
340 NLA_PUT_U32(skb, IFLA_MTU, dev->mtu);
342 if (dev->ifindex != dev->iflink)
343 NLA_PUT_U32(skb, IFLA_LINK, dev->iflink);
346 NLA_PUT_U32(skb, IFLA_MASTER, dev->master->ifindex);
348 if (dev->qdisc_sleeping)
349 NLA_PUT_STRING(skb, IFLA_QDISC, dev->qdisc_sleeping->ops->id);
352 struct rtnl_link_ifmap map = {
353 .mem_start = dev->mem_start,
354 .mem_end = dev->mem_end,
355 .base_addr = dev->base_addr,
358 .port = dev->if_port,
360 NLA_PUT(skb, IFLA_MAP, sizeof(map), &map);
364 NLA_PUT(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr);
365 NLA_PUT(skb, IFLA_BROADCAST, dev->addr_len, dev->broadcast);
368 if (dev->get_stats) {
369 struct net_device_stats *stats = dev->get_stats(dev);
373 attr = nla_reserve(skb, IFLA_STATS,
374 sizeof(struct rtnl_link_stats));
376 goto nla_put_failure;
378 copy_rtnl_link_stats(nla_data(attr), stats);
383 NLA_PUT(skb, IFLA_WIRELESS, iwbuflen, iwbuf);
385 return nlmsg_end(skb, nlh);
388 return nlmsg_cancel(skb, nlh);
391 static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb)
394 int s_idx = cb->args[0];
395 struct net_device *dev;
397 read_lock(&dev_base_lock);
398 for (dev=dev_base, idx=0; dev; dev = dev->next, idx++) {
401 if (vx_info_flags(skb->sk->sk_vx_info, VXF_HIDE_NETIF, 0) &&
402 !dev_in_nx_info(dev, skb->sk->sk_nx_info))
404 if (rtnl_fill_ifinfo(skb, dev, NULL, 0, RTM_NEWLINK,
405 NETLINK_CB(cb->skb).pid,
406 cb->nlh->nlmsg_seq, 0, NLM_F_MULTI) <= 0)
409 read_unlock(&dev_base_lock);
415 static struct nla_policy ifla_policy[IFLA_MAX+1] __read_mostly = {
416 [IFLA_IFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ-1 },
417 [IFLA_MAP] = { .len = sizeof(struct rtnl_link_ifmap) },
418 [IFLA_MTU] = { .type = NLA_U32 },
419 [IFLA_TXQLEN] = { .type = NLA_U32 },
420 [IFLA_WEIGHT] = { .type = NLA_U32 },
421 [IFLA_OPERSTATE] = { .type = NLA_U8 },
422 [IFLA_LINKMODE] = { .type = NLA_U8 },
425 static int rtnl_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
427 struct ifinfomsg *ifm;
428 struct net_device *dev;
429 int err, send_addr_notify = 0, modified = 0;
430 struct nlattr *tb[IFLA_MAX+1];
431 char ifname[IFNAMSIZ];
433 err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy);
438 nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ);
443 ifm = nlmsg_data(nlh);
444 if (ifm->ifi_index >= 0)
445 dev = dev_get_by_index(ifm->ifi_index);
446 else if (tb[IFLA_IFNAME])
447 dev = dev_get_by_name(ifname);
456 if (tb[IFLA_ADDRESS] &&
457 nla_len(tb[IFLA_ADDRESS]) < dev->addr_len)
460 if (tb[IFLA_BROADCAST] &&
461 nla_len(tb[IFLA_BROADCAST]) < dev->addr_len)
465 struct rtnl_link_ifmap *u_map;
468 if (!dev->set_config) {
473 if (!netif_device_present(dev)) {
478 u_map = nla_data(tb[IFLA_MAP]);
479 k_map.mem_start = (unsigned long) u_map->mem_start;
480 k_map.mem_end = (unsigned long) u_map->mem_end;
481 k_map.base_addr = (unsigned short) u_map->base_addr;
482 k_map.irq = (unsigned char) u_map->irq;
483 k_map.dma = (unsigned char) u_map->dma;
484 k_map.port = (unsigned char) u_map->port;
486 err = dev->set_config(dev, &k_map);
493 if (tb[IFLA_ADDRESS]) {
497 if (!dev->set_mac_address) {
502 if (!netif_device_present(dev)) {
507 len = sizeof(sa_family_t) + dev->addr_len;
508 sa = kmalloc(len, GFP_KERNEL);
513 sa->sa_family = dev->type;
514 memcpy(sa->sa_data, nla_data(tb[IFLA_ADDRESS]),
516 err = dev->set_mac_address(dev, sa);
520 send_addr_notify = 1;
525 err = dev_set_mtu(dev, nla_get_u32(tb[IFLA_MTU]));
532 * Interface selected by interface index but interface
533 * name provided implies that a name change has been
536 if (ifm->ifi_index >= 0 && ifname[0]) {
537 err = dev_change_name(dev, ifname);
543 #ifdef CONFIG_NET_WIRELESS_RTNETLINK
544 if (tb[IFLA_WIRELESS]) {
545 /* Call Wireless Extensions.
546 * Various stuff checked in there... */
547 err = wireless_rtnetlink_set(dev, nla_data(tb[IFLA_WIRELESS]),
548 nla_len(tb[IFLA_WIRELESS]));
552 #endif /* CONFIG_NET_WIRELESS_RTNETLINK */
554 if (tb[IFLA_BROADCAST]) {
555 nla_memcpy(dev->broadcast, tb[IFLA_BROADCAST], dev->addr_len);
556 send_addr_notify = 1;
561 dev_change_flags(dev, ifm->ifi_flags);
564 dev->tx_queue_len = nla_get_u32(tb[IFLA_TXQLEN]);
567 dev->weight = nla_get_u32(tb[IFLA_WEIGHT]);
569 if (tb[IFLA_OPERSTATE])
570 set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE]));
572 if (tb[IFLA_LINKMODE]) {
573 write_lock_bh(&dev_base_lock);
574 dev->link_mode = nla_get_u8(tb[IFLA_LINKMODE]);
575 write_unlock_bh(&dev_base_lock);
581 if (err < 0 && modified && net_ratelimit())
582 printk(KERN_WARNING "A link change request failed with "
583 "some changes comitted already. Interface %s may "
584 "have been left with an inconsistent configuration, "
585 "please check.\n", dev->name);
587 if (send_addr_notify)
588 call_netdevice_notifiers(NETDEV_CHANGEADDR, dev);
595 static int rtnl_getlink(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
597 struct ifinfomsg *ifm;
598 struct nlattr *tb[IFLA_MAX+1];
599 struct net_device *dev = NULL;
600 struct sk_buff *nskb;
601 char *iw_buf = NULL, *iw = NULL;
605 err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy);
609 ifm = nlmsg_data(nlh);
610 if (ifm->ifi_index >= 0) {
611 dev = dev_get_by_index(ifm->ifi_index);
618 #ifdef CONFIG_NET_WIRELESS_RTNETLINK
619 if (tb[IFLA_WIRELESS]) {
620 /* Call Wireless Extensions. We need to know the size before
621 * we can alloc. Various stuff checked in there... */
622 err = wireless_rtnetlink_get(dev, nla_data(tb[IFLA_WIRELESS]),
623 nla_len(tb[IFLA_WIRELESS]),
624 &iw_buf, &iw_buf_len);
628 iw += IW_EV_POINT_OFF;
630 #endif /* CONFIG_NET_WIRELESS_RTNETLINK */
632 nskb = nlmsg_new(if_nlmsg_size(iw_buf_len), GFP_KERNEL);
638 err = rtnl_fill_ifinfo(nskb, dev, iw, iw_buf_len, RTM_NEWLINK,
639 NETLINK_CB(skb).pid, nlh->nlmsg_seq, 0, 0);
640 /* failure impilies BUG in if_nlmsg_size or wireless_rtnetlink_get */
643 err = rtnl_unicast(nskb, NETLINK_CB(skb).pid);
651 static int rtnl_dump_all(struct sk_buff *skb, struct netlink_callback *cb)
654 int s_idx = cb->family;
658 for (idx=1; idx<NPROTO; idx++) {
659 int type = cb->nlh->nlmsg_type-RTM_BASE;
660 if (idx < s_idx || idx == PF_PACKET)
662 if (rtnetlink_links[idx] == NULL ||
663 rtnetlink_links[idx][type].dumpit == NULL)
666 memset(&cb->args[0], 0, sizeof(cb->args));
667 if (rtnetlink_links[idx][type].dumpit(skb, cb))
675 void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change)
680 skb = nlmsg_new(if_nlmsg_size(0), GFP_KERNEL);
684 err = rtnl_fill_ifinfo(skb, dev, NULL, 0, type, 0, 0, change, 0);
685 /* failure implies BUG in if_nlmsg_size() */
688 err = rtnl_notify(skb, 0, RTNLGRP_LINK, NULL, GFP_KERNEL);
691 rtnl_set_sk_err(RTNLGRP_LINK, err);
694 /* Protected by RTNL sempahore. */
695 static struct rtattr **rta_buf;
696 static int rtattr_max;
698 /* Process one rtnetlink message. */
700 static __inline__ int
701 rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, int *errp)
703 struct rtnetlink_link *link;
704 struct rtnetlink_link *link_tab;
711 /* Only requests are handled by kernel now */
712 if (!(nlh->nlmsg_flags&NLM_F_REQUEST))
715 type = nlh->nlmsg_type;
717 /* A control message: ignore them */
721 /* Unknown message: reply with EINVAL */
727 /* All the messages must have at least 1 byte length */
728 if (nlh->nlmsg_len < NLMSG_LENGTH(sizeof(struct rtgenmsg)))
731 family = ((struct rtgenmsg*)NLMSG_DATA(nlh))->rtgen_family;
732 if (family >= NPROTO) {
733 *errp = -EAFNOSUPPORT;
737 link_tab = rtnetlink_links[family];
738 if (link_tab == NULL)
739 link_tab = rtnetlink_links[PF_UNSPEC];
740 link = &link_tab[type];
745 if (kind != 2 && security_netlink_recv(skb, CAP_NET_ADMIN)) {
750 if (kind == 2 && nlh->nlmsg_flags&NLM_F_DUMP) {
751 if (link->dumpit == NULL)
752 link = &(rtnetlink_links[PF_UNSPEC][type]);
754 if (link->dumpit == NULL)
757 if ((*errp = netlink_dump_start(rtnl, skb, nlh,
758 link->dumpit, NULL)) != 0) {
762 netlink_queue_skip(nlh, skb);
766 memset(rta_buf, 0, (rtattr_max * sizeof(struct rtattr *)));
768 min_len = rtm_min[sz_idx];
769 if (nlh->nlmsg_len < min_len)
772 if (nlh->nlmsg_len > min_len) {
773 int attrlen = nlh->nlmsg_len - NLMSG_ALIGN(min_len);
774 struct rtattr *attr = (void*)nlh + NLMSG_ALIGN(min_len);
776 while (RTA_OK(attr, attrlen)) {
777 unsigned flavor = attr->rta_type;
779 if (flavor > rta_max[sz_idx])
781 rta_buf[flavor-1] = attr;
783 attr = RTA_NEXT(attr, attrlen);
787 if (link->doit == NULL)
788 link = &(rtnetlink_links[PF_UNSPEC][type]);
789 if (link->doit == NULL)
791 err = link->doit(skb, nlh, (void *)&rta_buf[0]);
801 static void rtnetlink_rcv(struct sock *sk, int len)
803 unsigned int qlen = 0;
806 mutex_lock(&rtnl_mutex);
807 netlink_run_queue(sk, &qlen, &rtnetlink_rcv_msg);
808 mutex_unlock(&rtnl_mutex);
814 static struct rtnetlink_link link_rtnetlink_table[RTM_NR_MSGTYPES] =
816 [RTM_GETLINK - RTM_BASE] = { .doit = rtnl_getlink,
817 .dumpit = rtnl_dump_ifinfo },
818 [RTM_SETLINK - RTM_BASE] = { .doit = rtnl_setlink },
819 [RTM_GETADDR - RTM_BASE] = { .dumpit = rtnl_dump_all },
820 [RTM_GETROUTE - RTM_BASE] = { .dumpit = rtnl_dump_all },
821 [RTM_NEWNEIGH - RTM_BASE] = { .doit = neigh_add },
822 [RTM_DELNEIGH - RTM_BASE] = { .doit = neigh_delete },
823 [RTM_GETNEIGH - RTM_BASE] = { .dumpit = neigh_dump_info },
824 #ifdef CONFIG_FIB_RULES
825 [RTM_NEWRULE - RTM_BASE] = { .doit = fib_nl_newrule },
826 [RTM_DELRULE - RTM_BASE] = { .doit = fib_nl_delrule },
828 [RTM_GETRULE - RTM_BASE] = { .dumpit = rtnl_dump_all },
829 [RTM_GETNEIGHTBL - RTM_BASE] = { .dumpit = neightbl_dump_info },
830 [RTM_SETNEIGHTBL - RTM_BASE] = { .doit = neightbl_set },
833 static int rtnetlink_event(struct notifier_block *this, unsigned long event, void *ptr)
835 struct net_device *dev = ptr;
837 case NETDEV_UNREGISTER:
838 rtmsg_ifinfo(RTM_DELLINK, dev, ~0U);
840 case NETDEV_REGISTER:
841 rtmsg_ifinfo(RTM_NEWLINK, dev, ~0U);
845 rtmsg_ifinfo(RTM_NEWLINK, dev, IFF_UP|IFF_RUNNING);
848 case NETDEV_GOING_DOWN:
851 rtmsg_ifinfo(RTM_NEWLINK, dev, 0);
857 static struct notifier_block rtnetlink_dev_notifier = {
858 .notifier_call = rtnetlink_event,
861 void __init rtnetlink_init(void)
866 for (i = 0; i < ARRAY_SIZE(rta_max); i++)
867 if (rta_max[i] > rtattr_max)
868 rtattr_max = rta_max[i];
869 rta_buf = kmalloc(rtattr_max * sizeof(struct rtattr *), GFP_KERNEL);
871 panic("rtnetlink_init: cannot allocate rta_buf\n");
873 rtnl = netlink_kernel_create(NETLINK_ROUTE, RTNLGRP_MAX, rtnetlink_rcv,
876 panic("rtnetlink_init: cannot initialize rtnetlink\n");
877 netlink_set_nonroot(NETLINK_ROUTE, NL_NONROOT_RECV);
878 register_netdevice_notifier(&rtnetlink_dev_notifier);
879 rtnetlink_links[PF_UNSPEC] = link_rtnetlink_table;
880 rtnetlink_links[PF_PACKET] = link_rtnetlink_table;
883 EXPORT_SYMBOL(__rta_fill);
884 EXPORT_SYMBOL(rtattr_strlcpy);
885 EXPORT_SYMBOL(rtattr_parse);
886 EXPORT_SYMBOL(rtnetlink_links);
887 EXPORT_SYMBOL(rtnetlink_put_metrics);
888 EXPORT_SYMBOL(rtnl_lock);
889 EXPORT_SYMBOL(rtnl_trylock);
890 EXPORT_SYMBOL(rtnl_unlock);
891 EXPORT_SYMBOL(rtnl_unicast);
892 EXPORT_SYMBOL(rtnl_notify);
893 EXPORT_SYMBOL(rtnl_set_sk_err);