1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 1980, 1986, 1991, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31 /************************************************************************
32 * Note: In this file a 'fib' is a "forwarding information base" *
33 * Which is the new name for an in kernel routing (next hop) table. *
34 ***********************************************************************/
35
36 #include "opt_inet.h"
37 #include "opt_inet6.h"
38 #include "opt_mrouting.h"
39 #include "opt_route.h"
40
41 #include <sys/param.h>
42 #include <sys/systm.h>
43 #include <sys/malloc.h>
44 #include <sys/mbuf.h>
45 #include <sys/socket.h>
46 #include <sys/sysctl.h>
47 #include <sys/syslog.h>
48 #include <sys/sysproto.h>
49 #include <sys/proc.h>
50 #include <sys/devctl.h>
51 #include <sys/domain.h>
52 #include <sys/eventhandler.h>
53 #include <sys/kernel.h>
54 #include <sys/lock.h>
55 #include <sys/rmlock.h>
56
57 #include <net/if.h>
58 #include <net/if_var.h>
59 #include <net/if_private.h>
60 #include <net/if_dl.h>
61 #include <net/route.h>
62 #include <net/route/route_ctl.h>
63 #include <net/route/route_var.h>
64 #include <net/route/nhop.h>
65 #include <net/vnet.h>
66
67 #include <netinet/in.h>
68 #include <netinet/ip_mroute.h>
69 #include <netinet6/in6_var.h>
70
71 VNET_PCPUSTAT_DEFINE(struct rtstat, rtstat);
72
73 VNET_PCPUSTAT_SYSINIT(rtstat);
74 #ifdef VIMAGE
75 VNET_PCPUSTAT_SYSUNINIT(rtstat);
76 #endif
77
78 EVENTHANDLER_LIST_DEFINE(rt_addrmsg);
79
80 static int rt_ifdelroute(const struct rtentry *rt, const struct nhop_object *,
81 void *arg);
82
83 /*
84 * route initialization must occur before ip6_init2(), which happenas at
85 * SI_ORDER_MIDDLE.
86 */
87 static void
route_init(void)88 route_init(void)
89 {
90
91 nhops_init();
92 }
93 SYSINIT(route_init, SI_SUB_PROTO_DOMAIN, SI_ORDER_THIRD, route_init, NULL);
94
95 struct rib_head *
rt_table_init(int offset,int family,u_int fibnum)96 rt_table_init(int offset, int family, u_int fibnum)
97 {
98 struct rib_head *rh;
99
100 rh = malloc(sizeof(struct rib_head), M_RTABLE, M_WAITOK | M_ZERO);
101
102 /* TODO: These details should be hidded inside radix.c */
103 /* Init masks tree */
104 rn_inithead_internal(&rh->head, rh->rnh_nodes, offset);
105 rn_inithead_internal(&rh->rmhead.head, rh->rmhead.mask_nodes, 0);
106 rh->head.rnh_masks = &rh->rmhead;
107
108 /* Save metadata associated with this routing table. */
109 rh->rib_family = family;
110 rh->rib_fibnum = fibnum;
111 #ifdef VIMAGE
112 rh->rib_vnet = curvnet;
113 #endif
114
115 tmproutes_init(rh);
116
117 /* Init locks */
118 RIB_LOCK_INIT(rh);
119
120 nhops_init_rib(rh);
121
122 /* Init subscription system */
123 rib_init_subscriptions(rh);
124
125 /* Finally, set base callbacks */
126 rh->rnh_addaddr = rn_addroute;
127 rh->rnh_deladdr = rn_delete;
128 rh->rnh_matchaddr = rn_match;
129 rh->rnh_lookup = rn_lookup;
130 rh->rnh_walktree = rn_walktree;
131 rh->rnh_walktree_from = rn_walktree_from;
132
133 return (rh);
134 }
135
136 static int
rt_freeentry(struct radix_node * rn,void * arg)137 rt_freeentry(struct radix_node *rn, void *arg)
138 {
139 struct radix_head * const rnh = arg;
140 struct radix_node *x;
141
142 x = (struct radix_node *)rn_delete(rn + 2, NULL, rnh);
143 if (x != NULL)
144 R_Free(x);
145 return (0);
146 }
147
148 void
rt_table_destroy(struct rib_head * rh)149 rt_table_destroy(struct rib_head *rh)
150 {
151
152 RIB_WLOCK(rh);
153 rh->rib_dying = true;
154 RIB_WUNLOCK(rh);
155
156 #ifdef FIB_ALGO
157 fib_destroy_rib(rh);
158 #endif
159
160 tmproutes_destroy(rh);
161
162 rn_walktree(&rh->rmhead.head, rt_freeentry, &rh->rmhead.head);
163
164 nhops_destroy_rib(rh);
165
166 rib_destroy_subscriptions(rh);
167
168 /* Assume table is already empty */
169 RIB_LOCK_DESTROY(rh);
170 free(rh, M_RTABLE);
171 }
172
173 /*
174 * Adds a temporal redirect entry to the routing table.
175 * @fibnum: fib number
176 * @dst: destination to install redirect to
177 * @gateway: gateway to go via
178 * @author: sockaddr of originating router, can be NULL
179 * @ifp: interface to use for the redirected route
180 * @flags: set of flags to add. Allowed: RTF_GATEWAY
181 * @lifetime_sec: time in seconds to expire this redirect.
182 *
183 * Retuns 0 on success, errno otherwise.
184 */
185 int
rib_add_redirect(u_int fibnum,struct sockaddr * dst,struct sockaddr * gateway,struct sockaddr * author,struct ifnet * ifp,int flags,int lifetime_sec)186 rib_add_redirect(u_int fibnum, struct sockaddr *dst, struct sockaddr *gateway,
187 struct sockaddr *author, struct ifnet *ifp, int flags, int lifetime_sec)
188 {
189 struct route_nhop_data rnd = { .rnd_weight = RT_DEFAULT_WEIGHT };
190 struct rib_cmd_info rc;
191 struct ifaddr *ifa;
192 int error;
193
194 NET_EPOCH_ASSERT();
195
196 if (rt_tables_get_rnh(fibnum, dst->sa_family) == NULL)
197 return (EAFNOSUPPORT);
198
199 /* Verify the allowed flag mask. */
200 KASSERT(((flags & ~(RTF_GATEWAY)) == 0),
201 ("invalid redirect flags: %x", flags));
202 flags |= RTF_HOST | RTF_DYNAMIC;
203
204 /* Get the best ifa for the given interface and gateway. */
205 if ((ifa = ifaof_ifpforaddr(gateway, ifp)) == NULL)
206 return (ENETUNREACH);
207
208 struct nhop_object *nh = nhop_alloc(fibnum, dst->sa_family);
209 if (nh == NULL)
210 return (ENOMEM);
211
212 nhop_set_gw(nh, gateway, flags & RTF_GATEWAY);
213 nhop_set_transmit_ifp(nh, ifp);
214 nhop_set_src(nh, ifa);
215 nhop_set_pxtype_flag(nh, NHF_HOST);
216 nhop_set_expire(nh, lifetime_sec + time_uptime);
217 nhop_set_redirect(nh, true);
218 nhop_set_origin(nh, NH_ORIGIN_REDIRECT);
219 rnd.rnd_nhop = nhop_get_nhop(nh, &error);
220 if (error == 0) {
221 error = rib_add_route_px(fibnum, dst, -1,
222 &rnd, RTM_F_CREATE, &rc);
223 }
224
225 if (error != 0) {
226 /* TODO: add per-fib redirect stats. */
227 return (error);
228 }
229
230 RTSTAT_INC(rts_dynamic);
231
232 /* Send notification of a route addition to userland. */
233 struct rt_addrinfo info = {
234 .rti_info[RTAX_DST] = dst,
235 .rti_info[RTAX_GATEWAY] = gateway,
236 .rti_info[RTAX_AUTHOR] = author,
237 };
238 rt_missmsg_fib(RTM_REDIRECT, &info, flags | RTF_UP, error, fibnum);
239
240 return (0);
241 }
242
243 /*
244 * Routing table ioctl interface.
245 */
246 int
rtioctl_fib(u_long req,caddr_t data,u_int fibnum)247 rtioctl_fib(u_long req, caddr_t data, u_int fibnum)
248 {
249
250 /*
251 * If more ioctl commands are added here, make sure the proper
252 * super-user checks are being performed because it is possible for
253 * prison-root to make it this far if raw sockets have been enabled
254 * in jails.
255 */
256 #ifdef INET
257 /* Multicast goop, grrr... */
258 return mrt_ioctl ? mrt_ioctl(req, data, fibnum) : EOPNOTSUPP;
259 #else /* INET */
260 return ENXIO;
261 #endif /* INET */
262 }
263
264 struct ifaddr *
ifa_ifwithroute(int flags,const struct sockaddr * dst,const struct sockaddr * gateway,u_int fibnum)265 ifa_ifwithroute(int flags, const struct sockaddr *dst,
266 const struct sockaddr *gateway, u_int fibnum)
267 {
268 struct ifaddr *ifa;
269
270 NET_EPOCH_ASSERT();
271 if ((flags & RTF_GATEWAY) == 0) {
272 /*
273 * If we are adding a route to an interface,
274 * and the interface is a pt to pt link
275 * we should search for the destination
276 * as our clue to the interface. Otherwise
277 * we can use the local address.
278 */
279 ifa = NULL;
280 if (flags & RTF_HOST)
281 ifa = ifa_ifwithdstaddr(dst, fibnum);
282 if (ifa == NULL)
283 ifa = ifa_ifwithaddr(gateway);
284 } else {
285 /*
286 * If we are adding a route to a remote net
287 * or host, the gateway may still be on the
288 * other end of a pt to pt link.
289 */
290 ifa = ifa_ifwithdstaddr(gateway, fibnum);
291 }
292 if (ifa == NULL)
293 ifa = ifa_ifwithnet(gateway, 0, fibnum);
294 if (ifa == NULL) {
295 struct nhop_object *nh;
296
297 nh = rib_lookup(fibnum, gateway, NHR_NONE, 0);
298
299 /*
300 * dismiss a gateway that is reachable only
301 * through the default router
302 */
303 if ((nh == NULL) || (nh->nh_flags & NHF_DEFAULT))
304 return (NULL);
305 ifa = nh->nh_ifa;
306 }
307 if (ifa->ifa_addr->sa_family != dst->sa_family) {
308 struct ifaddr *oifa = ifa;
309 ifa = ifaof_ifpforaddr(dst, ifa->ifa_ifp);
310 if (ifa == NULL)
311 ifa = oifa;
312 }
313
314 return (ifa);
315 }
316
317 /*
318 * Delete Routes for a Network Interface
319 *
320 * Called for each routing entry via the rnh->rnh_walktree() call above
321 * to delete all route entries referencing a detaching network interface.
322 *
323 * Arguments:
324 * rt pointer to rtentry
325 * nh pointer to nhop
326 * arg argument passed to rnh->rnh_walktree() - detaching interface
327 *
328 * Returns:
329 * 0 successful
330 * errno failed - reason indicated
331 */
332 static int
rt_ifdelroute(const struct rtentry * rt,const struct nhop_object * nh,void * arg)333 rt_ifdelroute(const struct rtentry *rt, const struct nhop_object *nh, void *arg)
334 {
335 struct ifnet *ifp = arg;
336
337 if (nh->nh_ifp != ifp)
338 return (0);
339
340 /*
341 * Protect (sorta) against walktree recursion problems
342 * with cloned routes
343 */
344 if ((rt->rte_flags & RTF_UP) == 0)
345 return (0);
346
347 return (1);
348 }
349
350 void
rt_flushifroutes(struct ifnet * ifp)351 rt_flushifroutes(struct ifnet *ifp)
352 {
353
354 rib_foreach_table_walk_del(AF_UNSPEC, rt_ifdelroute, ifp);
355 }
356
357 /*
358 * Tries to extract interface from RTAX_IFP passed in rt_addrinfo.
359 * Interface can be specified ether as interface index (sdl_index) or
360 * the interface name (sdl_data).
361 *
362 * Returns found ifp or NULL
363 */
364 static struct ifnet *
info_get_ifp(struct rt_addrinfo * info)365 info_get_ifp(struct rt_addrinfo *info)
366 {
367 const struct sockaddr_dl *sdl;
368
369 sdl = (const struct sockaddr_dl *)info->rti_info[RTAX_IFP];
370 if (sdl->sdl_family != AF_LINK)
371 return (NULL);
372
373 if (sdl->sdl_index != 0)
374 return (ifnet_byindex(sdl->sdl_index));
375 if (sdl->sdl_nlen > 0) {
376 char if_name[IF_NAMESIZE];
377 if (sdl->sdl_nlen + offsetof(struct sockaddr_dl, sdl_data) > sdl->sdl_len)
378 return (NULL);
379 if (sdl->sdl_nlen >= IF_NAMESIZE)
380 return (NULL);
381 bzero(if_name, sizeof(if_name));
382 memcpy(if_name, sdl->sdl_data, sdl->sdl_nlen);
383 return (ifunit(if_name));
384 }
385
386 return (NULL);
387 }
388
389 /*
390 * Calculates proper ifa/ifp for the cases when gateway AF is different
391 * from dst AF.
392 *
393 * Returns 0 on success.
394 */
395 __noinline static int
rt_getifa_family(struct rt_addrinfo * info,uint32_t fibnum)396 rt_getifa_family(struct rt_addrinfo *info, uint32_t fibnum)
397 {
398 if (info->rti_ifp == NULL) {
399 struct ifaddr *ifa = NULL;
400 /*
401 * No transmit interface specified. Guess it by checking gw sa.
402 */
403 const struct sockaddr *gw = info->rti_info[RTAX_GATEWAY];
404 ifa = ifa_ifwithroute(RTF_GATEWAY, gw, gw, fibnum);
405 if (ifa == NULL)
406 return (ENETUNREACH);
407 info->rti_ifp = ifa->ifa_ifp;
408 }
409
410 /* Prefer address from outgoing interface */
411 info->rti_ifa = ifaof_ifpforaddr(info->rti_info[RTAX_DST], info->rti_ifp);
412 #ifdef INET
413 if (info->rti_ifa == NULL) {
414 /* Use first found IPv4 address */
415 bool loopback_ok = info->rti_ifp->if_flags & IFF_LOOPBACK;
416 info->rti_ifa = (struct ifaddr *)in_findlocal(fibnum, loopback_ok);
417 }
418 #endif
419 if (info->rti_ifa == NULL)
420 return (ENETUNREACH);
421 return (0);
422 }
423
424 /*
425 * Fills in rti_ifp and rti_ifa for the provided fib.
426 *
427 * Assume basic consistency checks are executed by callers:
428 * RTAX_DST exists, if RTF_GATEWAY is set, RTAX_GATEWAY exists as well.
429 */
430 int
rt_getifa_fib(struct rt_addrinfo * info,u_int fibnum)431 rt_getifa_fib(struct rt_addrinfo *info, u_int fibnum)
432 {
433 const struct sockaddr *dst, *gateway, *ifaaddr;
434 int error, flags;
435
436 dst = info->rti_info[RTAX_DST];
437 gateway = info->rti_info[RTAX_GATEWAY];
438 ifaaddr = info->rti_info[RTAX_IFA];
439 flags = info->rti_flags;
440
441 /*
442 * ifp may be specified by sockaddr_dl
443 * when protocol address is ambiguous.
444 */
445 error = 0;
446
447 /* If we have interface specified by RTAX_IFP address, try to use it */
448 if ((info->rti_ifp == NULL) && (info->rti_info[RTAX_IFP] != NULL))
449 info->rti_ifp = info_get_ifp(info);
450 /*
451 * If we have source address specified, try to find it
452 * TODO: avoid enumerating all ifas on all interfaces.
453 */
454 if (info->rti_ifa == NULL && ifaaddr != NULL)
455 info->rti_ifa = ifa_ifwithaddr(ifaaddr);
456 if ((info->rti_ifa == NULL) && ((info->rti_flags & RTF_GATEWAY) != 0) &&
457 (gateway->sa_family != dst->sa_family))
458 return (rt_getifa_family(info, fibnum));
459 if (info->rti_ifa == NULL) {
460 const struct sockaddr *sa;
461
462 /*
463 * Most common use case for the userland-supplied routes.
464 *
465 * Choose sockaddr to select ifa.
466 * -- if ifp is set --
467 * Order of preference:
468 * 1) IFA address
469 * 2) gateway address
470 * Note: for interface routes link-level gateway address
471 * is specified to indicate the interface index without
472 * specifying RTF_GATEWAY. In this case, ignore gateway
473 * Note: gateway AF may be different from dst AF. In this case,
474 * ignore gateway
475 * 3) final destination.
476 * 4) if all of these fails, try to get at least link-level ifa.
477 * -- else --
478 * try to lookup gateway or dst in the routing table to get ifa
479 */
480 if (info->rti_info[RTAX_IFA] != NULL)
481 sa = info->rti_info[RTAX_IFA];
482 else if ((info->rti_flags & RTF_GATEWAY) != 0 &&
483 gateway->sa_family == dst->sa_family)
484 sa = gateway;
485 else
486 sa = dst;
487 if (info->rti_ifp != NULL) {
488 info->rti_ifa = ifaof_ifpforaddr(sa, info->rti_ifp);
489 /* Case 4 */
490 if (info->rti_ifa == NULL && gateway != NULL)
491 info->rti_ifa = ifaof_ifpforaddr(gateway, info->rti_ifp);
492 } else if (dst != NULL && gateway != NULL)
493 info->rti_ifa = ifa_ifwithroute(flags, dst, gateway,
494 fibnum);
495 else if (sa != NULL)
496 info->rti_ifa = ifa_ifwithroute(flags, sa, sa,
497 fibnum);
498 }
499 if (info->rti_ifa != NULL) {
500 if (info->rti_ifp == NULL)
501 info->rti_ifp = info->rti_ifa->ifa_ifp;
502 } else
503 error = ENETUNREACH;
504 return (error);
505 }
506
507 void
rt_updatemtu(struct ifnet * ifp)508 rt_updatemtu(struct ifnet *ifp)
509 {
510 struct rib_head *rnh;
511 int mtu;
512 int i, j;
513
514 /*
515 * Try to update rt_mtu for all routes using this interface
516 * Unfortunately the only way to do this is to traverse all
517 * routing tables in all fibs/domains.
518 */
519 for (i = 1; i <= AF_MAX; i++) {
520 mtu = if_getmtu_family(ifp, i);
521 for (j = 0; j < rt_numfibs; j++) {
522 rnh = rt_tables_get_rnh(j, i);
523 if (rnh == NULL)
524 continue;
525 nhops_update_ifmtu(rnh, ifp, mtu);
526 }
527 }
528 }
529
530 #if 0
531 int p_sockaddr(char *buf, int buflen, struct sockaddr *s);
532 int rt_print(char *buf, int buflen, struct rtentry *rt);
533
534 int
535 p_sockaddr(char *buf, int buflen, struct sockaddr *s)
536 {
537 void *paddr = NULL;
538
539 switch (s->sa_family) {
540 case AF_INET:
541 paddr = &((struct sockaddr_in *)s)->sin_addr;
542 break;
543 case AF_INET6:
544 paddr = &((struct sockaddr_in6 *)s)->sin6_addr;
545 break;
546 }
547
548 if (paddr == NULL)
549 return (0);
550
551 if (inet_ntop(s->sa_family, paddr, buf, buflen) == NULL)
552 return (0);
553
554 return (strlen(buf));
555 }
556
557 int
558 rt_print(char *buf, int buflen, struct rtentry *rt)
559 {
560 struct sockaddr *addr, *mask;
561 int i = 0;
562
563 addr = rt_key(rt);
564 mask = rt_mask(rt);
565
566 i = p_sockaddr(buf, buflen, addr);
567 if (!(rt->rt_flags & RTF_HOST)) {
568 buf[i++] = '/';
569 i += p_sockaddr(buf + i, buflen - i, mask);
570 }
571
572 if (rt->rt_flags & RTF_GATEWAY) {
573 buf[i++] = '>';
574 i += p_sockaddr(buf + i, buflen - i, &rt->rt_nhop->gw_sa);
575 }
576
577 return (i);
578 }
579 #endif
580
581 void
rt_maskedcopy(const struct sockaddr * src,struct sockaddr * dst,const struct sockaddr * netmask)582 rt_maskedcopy(const struct sockaddr *src, struct sockaddr *dst,
583 const struct sockaddr *netmask)
584 {
585 const u_char *cp1 = (const u_char *)src;
586 u_char *cp2 = (u_char *)dst;
587 const u_char *cp3 = (const u_char *)netmask;
588 u_char *cplim = cp2 + *cp3;
589 u_char *cplim2 = cp2 + *cp1;
590
591 *cp2++ = *cp1++; *cp2++ = *cp1++; /* copies sa_len & sa_family */
592 cp3 += 2;
593 if (cplim > cplim2)
594 cplim = cplim2;
595 while (cp2 < cplim)
596 *cp2++ = *cp1++ & *cp3++;
597 if (cp2 < cplim2)
598 bzero((caddr_t)cp2, (unsigned)(cplim2 - cp2));
599 }
600
601 /*
602 * Announce interface address arrival/withdraw
603 * Returns 0 on success.
604 */
605 int
rt_addrmsg(int cmd,struct ifaddr * ifa,int fibnum)606 rt_addrmsg(int cmd, struct ifaddr *ifa, int fibnum)
607 {
608 #if defined(INET) || defined(INET6)
609 struct sockaddr *sa = ifa->ifa_addr;
610 struct ifnet *ifp = ifa->ifa_ifp;
611 #endif
612
613 KASSERT(cmd == RTM_ADD || cmd == RTM_DELETE,
614 ("unexpected cmd %d", cmd));
615 KASSERT((fibnum >= 0 && fibnum < rt_numfibs),
616 ("%s: fib out of range 0 <=%d<%d", __func__, fibnum, rt_numfibs));
617
618 EVENTHANDLER_DIRECT_INVOKE(rt_addrmsg, ifa, cmd);
619
620 #ifdef INET
621 if (sa->sa_family == AF_INET) {
622 char addrstr[INET_ADDRSTRLEN];
623 char strbuf[INET_ADDRSTRLEN + 12];
624
625 inet_ntoa_r(((struct sockaddr_in *)sa)->sin_addr, addrstr);
626 snprintf(strbuf, sizeof(strbuf), "address=%s", addrstr);
627 devctl_notify("IFNET", ifp->if_xname,
628 (cmd == RTM_ADD) ? "ADDR_ADD" : "ADDR_DEL", strbuf);
629 }
630 #endif
631 #ifdef INET6
632 if (sa->sa_family == AF_INET6) {
633 char addrstr[INET6_ADDRSTRLEN];
634 char strbuf[INET6_ADDRSTRLEN + 12];
635
636 ip6_sprintf(addrstr, IFA_IN6(ifa));
637 snprintf(strbuf, sizeof(strbuf), "address=%s", addrstr);
638 devctl_notify("IFNET", ifp->if_xname,
639 (cmd == RTM_ADD) ? "ADDR_ADD" : "ADDR_DEL", strbuf);
640 }
641 #endif
642
643 if (V_rt_add_addr_allfibs)
644 fibnum = RT_ALL_FIBS;
645 return (rtsock_addrmsg(cmd, ifa, fibnum));
646 }
647
648 /*
649 * Announce kernel-originated route addition/removal to rtsock based on @rt data.
650 * cmd: RTM_ cmd
651 * @rt: valid rtentry
652 * @nh: nhop object to announce
653 * @fibnum: fib id or RT_ALL_FIBS
654 *
655 * Returns 0 on success.
656 */
657 int
rt_routemsg(int cmd,struct rtentry * rt,struct nhop_object * nh,int fibnum)658 rt_routemsg(int cmd, struct rtentry *rt, struct nhop_object *nh,
659 int fibnum)
660 {
661
662 KASSERT(cmd == RTM_ADD || cmd == RTM_DELETE || cmd == RTM_CHANGE,
663 ("unexpected cmd %d", cmd));
664
665 KASSERT(fibnum == RT_ALL_FIBS || (fibnum >= 0 && fibnum < rt_numfibs),
666 ("%s: fib out of range 0 <=%d<%d", __func__, fibnum, rt_numfibs));
667
668 KASSERT(rt_key(rt) != NULL, (":%s: rt_key must be supplied", __func__));
669
670 return (rtsock_routemsg(cmd, rt, nh, fibnum));
671 }
672
673 /*
674 * Announce kernel-originated route addition/removal to rtsock based on @rt data.
675 * cmd: RTM_ cmd
676 * @info: addrinfo structure with valid data.
677 * @fibnum: fib id or RT_ALL_FIBS
678 *
679 * Returns 0 on success.
680 */
681 int
rt_routemsg_info(int cmd,struct rt_addrinfo * info,int fibnum)682 rt_routemsg_info(int cmd, struct rt_addrinfo *info, int fibnum)
683 {
684
685 KASSERT(cmd == RTM_ADD || cmd == RTM_DELETE || cmd == RTM_CHANGE,
686 ("unexpected cmd %d", cmd));
687
688 KASSERT(fibnum == RT_ALL_FIBS || (fibnum >= 0 && fibnum < rt_numfibs),
689 ("%s: fib out of range 0 <=%d<%d", __func__, fibnum, rt_numfibs));
690
691 KASSERT(info->rti_info[RTAX_DST] != NULL, (":%s: RTAX_DST must be supplied", __func__));
692
693 return (rtsock_routemsg_info(cmd, info, fibnum));
694 }
695
696 void
rt_ifmsg(struct ifnet * ifp,int if_flags_mask)697 rt_ifmsg(struct ifnet *ifp, int if_flags_mask)
698 {
699 rtsock_callback_p->ifmsg_f(ifp, if_flags_mask);
700 netlink_callback_p->ifmsg_f(ifp, if_flags_mask);
701 }
702
703