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 SYSCTL_DECL(_net_route);
79 SYSCTL_VNET_PCPUSTAT(_net_route, OID_AUTO, stats, struct rtstat,
80 rtstat, "route statistics");
81
82 EVENTHANDLER_LIST_DEFINE(rt_addrmsg);
83
84 static int rt_ifdelroute(const struct rtentry *rt, const struct nhop_object *,
85 void *arg);
86
87 /*
88 * route initialization must occur before ip6_init2(), which happenas at
89 * SI_ORDER_MIDDLE.
90 */
91 static void
route_init(void)92 route_init(void)
93 {
94
95 nhops_init();
96 }
97 SYSINIT(route_init, SI_SUB_PROTO_DOMAIN, SI_ORDER_THIRD, route_init, NULL);
98
99 struct rib_head *
rt_table_init(int offset,int family,u_int fibnum)100 rt_table_init(int offset, int family, u_int fibnum)
101 {
102 struct rib_head *rh;
103
104 rh = malloc(sizeof(struct rib_head), M_RTABLE, M_WAITOK | M_ZERO);
105
106 /* TODO: These details should be hidded inside radix.c */
107 /* Init masks tree */
108 rn_inithead_internal(&rh->head, rh->rnh_nodes, offset);
109 rn_inithead_internal(&rh->rmhead.head, rh->rmhead.mask_nodes, 0);
110 rh->head.rnh_masks = &rh->rmhead;
111
112 /* Save metadata associated with this routing table. */
113 rh->rib_family = family;
114 rh->rib_fibnum = fibnum;
115 #ifdef VIMAGE
116 rh->rib_vnet = curvnet;
117 #endif
118
119 tmproutes_init(rh);
120
121 /* Init locks */
122 RIB_LOCK_INIT(rh);
123
124 nhops_init_rib(rh);
125
126 /* Init subscription system */
127 rib_init_subscriptions(rh);
128
129 /* Finally, set base callbacks */
130 rh->rnh_addaddr = rn_addroute;
131 rh->rnh_deladdr = rn_delete;
132 rh->rnh_matchaddr = rn_match;
133 rh->rnh_lookup = rn_lookup;
134 rh->rnh_walktree = rn_walktree;
135 rh->rnh_walktree_from = rn_walktree_from;
136
137 return (rh);
138 }
139
140 static int
rt_freeentry(struct radix_node * rn,void * arg)141 rt_freeentry(struct radix_node *rn, void *arg)
142 {
143 struct radix_head * const rnh = arg;
144 struct radix_node *x;
145
146 x = (struct radix_node *)rn_delete(rn + 2, NULL, rnh);
147 if (x != NULL)
148 R_Free(x);
149 return (0);
150 }
151
152 void
rt_table_destroy(struct rib_head * rh)153 rt_table_destroy(struct rib_head *rh)
154 {
155
156 RIB_WLOCK(rh);
157 rh->rib_dying = true;
158 RIB_WUNLOCK(rh);
159
160 #ifdef FIB_ALGO
161 fib_destroy_rib(rh);
162 #endif
163
164 tmproutes_destroy(rh);
165
166 rn_walktree(&rh->rmhead.head, rt_freeentry, &rh->rmhead.head);
167
168 nhops_destroy_rib(rh);
169
170 rib_destroy_subscriptions(rh);
171
172 /* Assume table is already empty */
173 RIB_LOCK_DESTROY(rh);
174 free(rh, M_RTABLE);
175 }
176
177 /*
178 * Adds a temporal redirect entry to the routing table.
179 * @fibnum: fib number
180 * @dst: destination to install redirect to
181 * @gateway: gateway to go via
182 * @author: sockaddr of originating router, can be NULL
183 * @ifp: interface to use for the redirected route
184 * @flags: set of flags to add. Allowed: RTF_GATEWAY
185 * @lifetime_sec: time in seconds to expire this redirect.
186 *
187 * Retuns 0 on success, errno otherwise.
188 */
189 int
rib_add_redirect(u_int fibnum,struct sockaddr * dst,struct sockaddr * gateway,struct sockaddr * author,struct ifnet * ifp,int flags,int lifetime_sec)190 rib_add_redirect(u_int fibnum, struct sockaddr *dst, struct sockaddr *gateway,
191 struct sockaddr *author, struct ifnet *ifp, int flags, int lifetime_sec)
192 {
193 struct route_nhop_data rnd = { .rnd_weight = RT_DEFAULT_WEIGHT };
194 struct rib_cmd_info rc;
195 struct ifaddr *ifa;
196 int error;
197
198 NET_EPOCH_ASSERT();
199
200 if (rt_tables_get_rnh(fibnum, dst->sa_family) == NULL)
201 return (EAFNOSUPPORT);
202
203 /* Verify the allowed flag mask. */
204 KASSERT(((flags & ~(RTF_GATEWAY)) == 0),
205 ("invalid redirect flags: %x", flags));
206 flags |= RTF_HOST | RTF_DYNAMIC;
207
208 /* Get the best ifa for the given interface and gateway. */
209 if ((ifa = ifaof_ifpforaddr(gateway, ifp)) == NULL)
210 return (ENETUNREACH);
211
212 struct nhop_object *nh = nhop_alloc(fibnum, dst->sa_family);
213 if (nh == NULL)
214 return (ENOMEM);
215
216 nhop_set_gw(nh, gateway, flags & RTF_GATEWAY);
217 nhop_set_transmit_ifp(nh, ifp);
218 nhop_set_src(nh, ifa);
219 nhop_set_pxtype_flag(nh, NHF_HOST);
220 nhop_set_expire(nh, lifetime_sec + time_uptime);
221 nhop_set_redirect(nh, true);
222 nhop_set_origin(nh, NH_ORIGIN_REDIRECT);
223 rnd.rnd_nhop = nhop_get_nhop(nh, &error);
224 if (error == 0) {
225 error = rib_add_route_px(fibnum, dst, -1,
226 &rnd, RTM_F_CREATE, &rc);
227 }
228
229 if (error != 0) {
230 /* TODO: add per-fib redirect stats. */
231 return (error);
232 }
233
234 RTSTAT_INC(rts_dynamic);
235
236 /* Send notification of a route addition to userland. */
237 struct rt_addrinfo info = {
238 .rti_info[RTAX_DST] = dst,
239 .rti_info[RTAX_GATEWAY] = gateway,
240 .rti_info[RTAX_AUTHOR] = author,
241 };
242 rt_missmsg_fib(RTM_REDIRECT, &info, flags | RTF_UP, error, fibnum);
243
244 return (0);
245 }
246
247 /*
248 * Routing table ioctl interface.
249 */
250 int
rtioctl_fib(u_long req,caddr_t data,u_int fibnum)251 rtioctl_fib(u_long req, caddr_t data, u_int fibnum)
252 {
253
254 /*
255 * If more ioctl commands are added here, make sure the proper
256 * super-user checks are being performed because it is possible for
257 * prison-root to make it this far if raw sockets have been enabled
258 * in jails.
259 */
260 #ifdef INET
261 /* Multicast goop, grrr... */
262 return mrt_ioctl ? mrt_ioctl(req, data, fibnum) : EOPNOTSUPP;
263 #else /* INET */
264 return ENXIO;
265 #endif /* INET */
266 }
267
268 struct ifaddr *
ifa_ifwithroute(int flags,const struct sockaddr * dst,const struct sockaddr * gateway,u_int fibnum)269 ifa_ifwithroute(int flags, const struct sockaddr *dst,
270 const struct sockaddr *gateway, u_int fibnum)
271 {
272 struct ifaddr *ifa;
273
274 NET_EPOCH_ASSERT();
275 if ((flags & RTF_GATEWAY) == 0) {
276 /*
277 * If we are adding a route to an interface,
278 * and the interface is a pt to pt link
279 * we should search for the destination
280 * as our clue to the interface. Otherwise
281 * we can use the local address.
282 */
283 ifa = NULL;
284 if (flags & RTF_HOST)
285 ifa = ifa_ifwithdstaddr(dst, fibnum);
286 if (ifa == NULL)
287 ifa = ifa_ifwithaddr(gateway);
288 } else {
289 /*
290 * If we are adding a route to a remote net
291 * or host, the gateway may still be on the
292 * other end of a pt to pt link.
293 */
294 ifa = ifa_ifwithdstaddr(gateway, fibnum);
295 }
296 if (ifa == NULL)
297 ifa = ifa_ifwithnet(gateway, 0, fibnum);
298 if (ifa == NULL) {
299 struct nhop_object *nh;
300
301 nh = rib_lookup(fibnum, gateway, NHR_NONE, 0);
302
303 /*
304 * dismiss a gateway that is reachable only
305 * through the default router
306 */
307 if ((nh == NULL) || (nh->nh_flags & NHF_DEFAULT))
308 return (NULL);
309 ifa = nh->nh_ifa;
310 }
311 if (ifa->ifa_addr->sa_family != dst->sa_family) {
312 struct ifaddr *oifa = ifa;
313 ifa = ifaof_ifpforaddr(dst, ifa->ifa_ifp);
314 if (ifa == NULL)
315 ifa = oifa;
316 }
317
318 return (ifa);
319 }
320
321 /*
322 * Delete Routes for a Network Interface
323 *
324 * Called for each routing entry via the rnh->rnh_walktree() call above
325 * to delete all route entries referencing a detaching network interface.
326 *
327 * Arguments:
328 * rt pointer to rtentry
329 * nh pointer to nhop
330 * arg argument passed to rnh->rnh_walktree() - detaching interface
331 *
332 * Returns:
333 * 0 successful
334 * errno failed - reason indicated
335 */
336 static int
rt_ifdelroute(const struct rtentry * rt,const struct nhop_object * nh,void * arg)337 rt_ifdelroute(const struct rtentry *rt, const struct nhop_object *nh, void *arg)
338 {
339 struct ifnet *ifp = arg;
340
341 if (nh->nh_ifp != ifp)
342 return (0);
343
344 /*
345 * Protect (sorta) against walktree recursion problems
346 * with cloned routes
347 */
348 if ((rt->rte_flags & RTF_UP) == 0)
349 return (0);
350
351 return (1);
352 }
353
354 void
rt_flushifroutes(struct ifnet * ifp)355 rt_flushifroutes(struct ifnet *ifp)
356 {
357
358 rib_foreach_table_walk_del(AF_UNSPEC, rt_ifdelroute, ifp);
359 }
360
361 /*
362 * Tries to extract interface from RTAX_IFP passed in rt_addrinfo.
363 * Interface can be specified ether as interface index (sdl_index) or
364 * the interface name (sdl_data).
365 *
366 * Returns found ifp or NULL
367 */
368 static struct ifnet *
info_get_ifp(struct rt_addrinfo * info)369 info_get_ifp(struct rt_addrinfo *info)
370 {
371 const struct sockaddr_dl *sdl;
372
373 sdl = (const struct sockaddr_dl *)info->rti_info[RTAX_IFP];
374 if (sdl->sdl_family != AF_LINK)
375 return (NULL);
376
377 if (sdl->sdl_index != 0)
378 return (ifnet_byindex(sdl->sdl_index));
379 if (sdl->sdl_nlen > 0) {
380 char if_name[IF_NAMESIZE];
381 if (sdl->sdl_nlen + offsetof(struct sockaddr_dl, sdl_data) > sdl->sdl_len)
382 return (NULL);
383 if (sdl->sdl_nlen >= IF_NAMESIZE)
384 return (NULL);
385 bzero(if_name, sizeof(if_name));
386 memcpy(if_name, sdl->sdl_data, sdl->sdl_nlen);
387 return (ifunit(if_name));
388 }
389
390 return (NULL);
391 }
392
393 /*
394 * Calculates proper ifa/ifp for the cases when gateway AF is different
395 * from dst AF.
396 *
397 * Returns 0 on success.
398 */
399 __noinline static int
rt_getifa_family(struct rt_addrinfo * info,uint32_t fibnum)400 rt_getifa_family(struct rt_addrinfo *info, uint32_t fibnum)
401 {
402 if (info->rti_ifp == NULL) {
403 struct ifaddr *ifa = NULL;
404 /*
405 * No transmit interface specified. Guess it by checking gw sa.
406 */
407 const struct sockaddr *gw = info->rti_info[RTAX_GATEWAY];
408 ifa = ifa_ifwithroute(RTF_GATEWAY, gw, gw, fibnum);
409 if (ifa == NULL)
410 return (ENETUNREACH);
411 info->rti_ifp = ifa->ifa_ifp;
412 }
413
414 /* Prefer address from outgoing interface */
415 info->rti_ifa = ifaof_ifpforaddr(info->rti_info[RTAX_DST], info->rti_ifp);
416 #ifdef INET
417 if (info->rti_ifa == NULL) {
418 /* Use first found IPv4 address */
419 bool loopback_ok = info->rti_ifp->if_flags & IFF_LOOPBACK;
420 info->rti_ifa = (struct ifaddr *)in_findlocal(fibnum, loopback_ok);
421 }
422 #endif
423 if (info->rti_ifa == NULL)
424 return (ENETUNREACH);
425 return (0);
426 }
427
428 /*
429 * Fills in rti_ifp and rti_ifa for the provided fib.
430 *
431 * Assume basic consistency checks are executed by callers:
432 * RTAX_DST exists, if RTF_GATEWAY is set, RTAX_GATEWAY exists as well.
433 */
434 int
rt_getifa_fib(struct rt_addrinfo * info,u_int fibnum)435 rt_getifa_fib(struct rt_addrinfo *info, u_int fibnum)
436 {
437 const struct sockaddr *dst, *gateway, *ifaaddr;
438 int error, flags;
439
440 dst = info->rti_info[RTAX_DST];
441 gateway = info->rti_info[RTAX_GATEWAY];
442 ifaaddr = info->rti_info[RTAX_IFA];
443 flags = info->rti_flags;
444
445 /*
446 * ifp may be specified by sockaddr_dl
447 * when protocol address is ambiguous.
448 */
449 error = 0;
450
451 /* If we have interface specified by RTAX_IFP address, try to use it */
452 if ((info->rti_ifp == NULL) && (info->rti_info[RTAX_IFP] != NULL))
453 info->rti_ifp = info_get_ifp(info);
454 /*
455 * If we have source address specified, try to find it
456 * TODO: avoid enumerating all ifas on all interfaces.
457 */
458 if (info->rti_ifa == NULL && ifaaddr != NULL)
459 info->rti_ifa = ifa_ifwithaddr(ifaaddr);
460 if ((info->rti_ifa == NULL) && ((info->rti_flags & RTF_GATEWAY) != 0) &&
461 (gateway->sa_family != dst->sa_family))
462 return (rt_getifa_family(info, fibnum));
463 if (info->rti_ifa == NULL) {
464 const struct sockaddr *sa;
465
466 /*
467 * Most common use case for the userland-supplied routes.
468 *
469 * Choose sockaddr to select ifa.
470 * -- if ifp is set --
471 * Order of preference:
472 * 1) IFA address
473 * 2) gateway address
474 * Note: for interface routes link-level gateway address
475 * is specified to indicate the interface index without
476 * specifying RTF_GATEWAY. In this case, ignore gateway
477 * Note: gateway AF may be different from dst AF. In this case,
478 * ignore gateway
479 * 3) final destination.
480 * 4) if all of these fails, try to get at least link-level ifa.
481 * -- else --
482 * try to lookup gateway or dst in the routing table to get ifa
483 */
484 if (info->rti_info[RTAX_IFA] != NULL)
485 sa = info->rti_info[RTAX_IFA];
486 else if ((info->rti_flags & RTF_GATEWAY) != 0 &&
487 gateway->sa_family == dst->sa_family)
488 sa = gateway;
489 else
490 sa = dst;
491 if (info->rti_ifp != NULL) {
492 info->rti_ifa = ifaof_ifpforaddr(sa, info->rti_ifp);
493 /* Case 4 */
494 if (info->rti_ifa == NULL && gateway != NULL)
495 info->rti_ifa = ifaof_ifpforaddr(gateway, info->rti_ifp);
496 } else if (dst != NULL && gateway != NULL)
497 info->rti_ifa = ifa_ifwithroute(flags, dst, gateway,
498 fibnum);
499 else if (sa != NULL)
500 info->rti_ifa = ifa_ifwithroute(flags, sa, sa,
501 fibnum);
502 }
503 if (info->rti_ifa != NULL) {
504 if (info->rti_ifp == NULL)
505 info->rti_ifp = info->rti_ifa->ifa_ifp;
506 } else
507 error = ENETUNREACH;
508 return (error);
509 }
510
511 void
rt_updatemtu(struct ifnet * ifp)512 rt_updatemtu(struct ifnet *ifp)
513 {
514 struct rib_head *rnh;
515 int mtu;
516 int i, j;
517
518 /*
519 * Try to update rt_mtu for all routes using this interface
520 * Unfortunately the only way to do this is to traverse all
521 * routing tables in all fibs/domains.
522 */
523 for (i = 1; i <= AF_MAX; i++) {
524 mtu = if_getmtu_family(ifp, i);
525 for (j = 0; j < rt_numfibs; j++) {
526 rnh = rt_tables_get_rnh(j, i);
527 if (rnh == NULL)
528 continue;
529 nhops_update_ifmtu(rnh, ifp, mtu);
530 }
531 }
532 }
533
534 #if 0
535 int p_sockaddr(char *buf, int buflen, struct sockaddr *s);
536 int rt_print(char *buf, int buflen, struct rtentry *rt);
537
538 int
539 p_sockaddr(char *buf, int buflen, struct sockaddr *s)
540 {
541 void *paddr = NULL;
542
543 switch (s->sa_family) {
544 case AF_INET:
545 paddr = &((struct sockaddr_in *)s)->sin_addr;
546 break;
547 case AF_INET6:
548 paddr = &((struct sockaddr_in6 *)s)->sin6_addr;
549 break;
550 }
551
552 if (paddr == NULL)
553 return (0);
554
555 if (inet_ntop(s->sa_family, paddr, buf, buflen) == NULL)
556 return (0);
557
558 return (strlen(buf));
559 }
560
561 int
562 rt_print(char *buf, int buflen, struct rtentry *rt)
563 {
564 struct sockaddr *addr, *mask;
565 int i = 0;
566
567 addr = rt_key(rt);
568 mask = rt_mask(rt);
569
570 i = p_sockaddr(buf, buflen, addr);
571 if (!(rt->rt_flags & RTF_HOST)) {
572 buf[i++] = '/';
573 i += p_sockaddr(buf + i, buflen - i, mask);
574 }
575
576 if (rt->rt_flags & RTF_GATEWAY) {
577 buf[i++] = '>';
578 i += p_sockaddr(buf + i, buflen - i, &rt->rt_nhop->gw_sa);
579 }
580
581 return (i);
582 }
583 #endif
584
585 void
rt_maskedcopy(const struct sockaddr * src,struct sockaddr * dst,const struct sockaddr * netmask)586 rt_maskedcopy(const struct sockaddr *src, struct sockaddr *dst,
587 const struct sockaddr *netmask)
588 {
589 const u_char *cp1 = (const u_char *)src;
590 u_char *cp2 = (u_char *)dst;
591 const u_char *cp3 = (const u_char *)netmask;
592 u_char *cplim = cp2 + *cp3;
593 u_char *cplim2 = cp2 + *cp1;
594
595 *cp2++ = *cp1++; *cp2++ = *cp1++; /* copies sa_len & sa_family */
596 cp3 += 2;
597 if (cplim > cplim2)
598 cplim = cplim2;
599 while (cp2 < cplim)
600 *cp2++ = *cp1++ & *cp3++;
601 if (cp2 < cplim2)
602 bzero((caddr_t)cp2, (unsigned)(cplim2 - cp2));
603 }
604
605 /*
606 * Announce interface address arrival/withdraw
607 * Returns 0 on success.
608 */
609 int
rt_addrmsg(int cmd,struct ifaddr * ifa,int fibnum)610 rt_addrmsg(int cmd, struct ifaddr *ifa, int fibnum)
611 {
612 #if defined(INET) || defined(INET6)
613 struct sockaddr *sa = ifa->ifa_addr;
614 struct ifnet *ifp = ifa->ifa_ifp;
615 #endif
616
617 KASSERT(cmd == RTM_ADD || cmd == RTM_DELETE,
618 ("unexpected cmd %d", cmd));
619 KASSERT((fibnum >= 0 && fibnum < rt_numfibs),
620 ("%s: fib out of range 0 <=%d<%d", __func__, fibnum, rt_numfibs));
621
622 EVENTHANDLER_DIRECT_INVOKE(rt_addrmsg, ifa, cmd);
623
624 #ifdef INET
625 if (sa->sa_family == AF_INET) {
626 char addrstr[INET_ADDRSTRLEN];
627 char strbuf[INET_ADDRSTRLEN + 12];
628
629 inet_ntoa_r(((struct sockaddr_in *)sa)->sin_addr, addrstr);
630 snprintf(strbuf, sizeof(strbuf), "address=%s", addrstr);
631 devctl_notify("IFNET", ifp->if_xname,
632 (cmd == RTM_ADD) ? "ADDR_ADD" : "ADDR_DEL", strbuf);
633 }
634 #endif
635 #ifdef INET6
636 if (sa->sa_family == AF_INET6) {
637 char addrstr[INET6_ADDRSTRLEN];
638 char strbuf[INET6_ADDRSTRLEN + 12];
639
640 ip6_sprintf(addrstr, IFA_IN6(ifa));
641 snprintf(strbuf, sizeof(strbuf), "address=%s", addrstr);
642 devctl_notify("IFNET", ifp->if_xname,
643 (cmd == RTM_ADD) ? "ADDR_ADD" : "ADDR_DEL", strbuf);
644 }
645 #endif
646
647 if (V_rt_add_addr_allfibs)
648 fibnum = RT_ALL_FIBS;
649 return (rtsock_addrmsg(cmd, ifa, fibnum));
650 }
651
652 /*
653 * Announce kernel-originated route addition/removal to rtsock based on @rt data.
654 * cmd: RTM_ cmd
655 * @rt: valid rtentry
656 * @nh: nhop object to announce
657 * @fibnum: fib id or RT_ALL_FIBS
658 *
659 * Returns 0 on success.
660 */
661 int
rt_routemsg(int cmd,struct rtentry * rt,struct nhop_object * nh,int fibnum)662 rt_routemsg(int cmd, struct rtentry *rt, struct nhop_object *nh,
663 int fibnum)
664 {
665
666 KASSERT(cmd == RTM_ADD || cmd == RTM_DELETE || cmd == RTM_CHANGE,
667 ("unexpected cmd %d", cmd));
668
669 KASSERT(fibnum == RT_ALL_FIBS || (fibnum >= 0 && fibnum < rt_numfibs),
670 ("%s: fib out of range 0 <=%d<%d", __func__, fibnum, rt_numfibs));
671
672 KASSERT(rt_key(rt) != NULL, (":%s: rt_key must be supplied", __func__));
673
674 return (rtsock_routemsg(cmd, rt, nh, fibnum));
675 }
676
677 /*
678 * Announce kernel-originated route addition/removal to rtsock based on @rt data.
679 * cmd: RTM_ cmd
680 * @info: addrinfo structure with valid data.
681 * @fibnum: fib id or RT_ALL_FIBS
682 *
683 * Returns 0 on success.
684 */
685 int
rt_routemsg_info(int cmd,struct rt_addrinfo * info,int fibnum)686 rt_routemsg_info(int cmd, struct rt_addrinfo *info, int fibnum)
687 {
688
689 KASSERT(cmd == RTM_ADD || cmd == RTM_DELETE || cmd == RTM_CHANGE,
690 ("unexpected cmd %d", cmd));
691
692 KASSERT(fibnum == RT_ALL_FIBS || (fibnum >= 0 && fibnum < rt_numfibs),
693 ("%s: fib out of range 0 <=%d<%d", __func__, fibnum, rt_numfibs));
694
695 KASSERT(info->rti_info[RTAX_DST] != NULL, (":%s: RTAX_DST must be supplied", __func__));
696
697 return (rtsock_routemsg_info(cmd, info, fibnum));
698 }
699
700 void
rt_ifmsg(struct ifnet * ifp,int if_flags_mask)701 rt_ifmsg(struct ifnet *ifp, int if_flags_mask)
702 {
703 rtsock_callback_p->ifmsg_f(ifp, if_flags_mask);
704 netlink_callback_p->ifmsg_f(ifp, if_flags_mask);
705 }
706
707