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 * @(#)route.c 8.3.1.1 (Berkeley) 2/23/95 32 * $FreeBSD$ 33 */ 34 /************************************************************************ 35 * Note: In this file a 'fib' is a "forwarding information base" * 36 * Which is the new name for an in kernel routing (next hop) table. * 37 ***********************************************************************/ 38 39 #include "opt_inet.h" 40 #include "opt_inet6.h" 41 #include "opt_mrouting.h" 42 #include "opt_route.h" 43 44 #include <sys/param.h> 45 #include <sys/systm.h> 46 #include <sys/malloc.h> 47 #include <sys/mbuf.h> 48 #include <sys/socket.h> 49 #include <sys/sysctl.h> 50 #include <sys/syslog.h> 51 #include <sys/sysproto.h> 52 #include <sys/proc.h> 53 #include <sys/devctl.h> 54 #include <sys/domain.h> 55 #include <sys/eventhandler.h> 56 #include <sys/kernel.h> 57 #include <sys/lock.h> 58 #include <sys/rmlock.h> 59 60 #include <net/if.h> 61 #include <net/if_var.h> 62 #include <net/if_dl.h> 63 #include <net/route.h> 64 #include <net/route/route_ctl.h> 65 #include <net/route/route_var.h> 66 #include <net/route/nhop.h> 67 #include <net/vnet.h> 68 69 #include <netinet/in.h> 70 #include <netinet/ip_mroute.h> 71 #include <netinet6/in6_var.h> 72 73 VNET_PCPUSTAT_DEFINE(struct rtstat, rtstat); 74 75 VNET_PCPUSTAT_SYSINIT(rtstat); 76 #ifdef VIMAGE 77 VNET_PCPUSTAT_SYSUNINIT(rtstat); 78 #endif 79 80 EVENTHANDLER_LIST_DEFINE(rt_addrmsg); 81 82 static int rt_ifdelroute(const struct rtentry *rt, const struct nhop_object *, 83 void *arg); 84 85 /* 86 * route initialization must occur before ip6_init2(), which happenas at 87 * SI_ORDER_MIDDLE. 88 */ 89 static void 90 route_init(void) 91 { 92 93 nhops_init(); 94 } 95 SYSINIT(route_init, SI_SUB_PROTO_DOMAIN, SI_ORDER_THIRD, route_init, NULL); 96 97 struct rib_head * 98 rt_table_init(int offset, int family, u_int fibnum) 99 { 100 struct rib_head *rh; 101 102 rh = malloc(sizeof(struct rib_head), M_RTABLE, M_WAITOK | M_ZERO); 103 104 /* TODO: These details should be hidded inside radix.c */ 105 /* Init masks tree */ 106 rn_inithead_internal(&rh->head, rh->rnh_nodes, offset); 107 rn_inithead_internal(&rh->rmhead.head, rh->rmhead.mask_nodes, 0); 108 rh->head.rnh_masks = &rh->rmhead; 109 110 /* Save metadata associated with this routing table. */ 111 rh->rib_family = family; 112 rh->rib_fibnum = fibnum; 113 #ifdef VIMAGE 114 rh->rib_vnet = curvnet; 115 #endif 116 117 tmproutes_init(rh); 118 119 /* Init locks */ 120 RIB_LOCK_INIT(rh); 121 122 nhops_init_rib(rh); 123 124 /* Init subscription system */ 125 rib_init_subscriptions(rh); 126 127 /* Finally, set base callbacks */ 128 rh->rnh_addaddr = rn_addroute; 129 rh->rnh_deladdr = rn_delete; 130 rh->rnh_matchaddr = rn_match; 131 rh->rnh_lookup = rn_lookup; 132 rh->rnh_walktree = rn_walktree; 133 rh->rnh_walktree_from = rn_walktree_from; 134 135 return (rh); 136 } 137 138 static int 139 rt_freeentry(struct radix_node *rn, void *arg) 140 { 141 struct radix_head * const rnh = arg; 142 struct radix_node *x; 143 144 x = (struct radix_node *)rn_delete(rn + 2, NULL, rnh); 145 if (x != NULL) 146 R_Free(x); 147 return (0); 148 } 149 150 void 151 rt_table_destroy(struct rib_head *rh) 152 { 153 154 RIB_WLOCK(rh); 155 rh->rib_dying = true; 156 RIB_WUNLOCK(rh); 157 158 #ifdef FIB_ALGO 159 fib_destroy_rib(rh); 160 #endif 161 162 tmproutes_destroy(rh); 163 164 rn_walktree(&rh->rmhead.head, rt_freeentry, &rh->rmhead.head); 165 166 nhops_destroy_rib(rh); 167 168 rib_destroy_subscriptions(rh); 169 170 /* Assume table is already empty */ 171 RIB_LOCK_DESTROY(rh); 172 free(rh, M_RTABLE); 173 } 174 175 /* 176 * Adds a temporal redirect entry to the routing table. 177 * @fibnum: fib number 178 * @dst: destination to install redirect to 179 * @gateway: gateway to go via 180 * @author: sockaddr of originating router, can be NULL 181 * @ifp: interface to use for the redirected route 182 * @flags: set of flags to add. Allowed: RTF_GATEWAY 183 * @lifetime_sec: time in seconds to expire this redirect. 184 * 185 * Retuns 0 on success, errno otherwise. 186 */ 187 int 188 rib_add_redirect(u_int fibnum, struct sockaddr *dst, struct sockaddr *gateway, 189 struct sockaddr *author, struct ifnet *ifp, int flags, int lifetime_sec) 190 { 191 struct route_nhop_data rnd = { .rnd_weight = RT_DEFAULT_WEIGHT }; 192 struct rib_cmd_info rc; 193 struct ifaddr *ifa; 194 int error; 195 196 NET_EPOCH_ASSERT(); 197 198 if (rt_tables_get_rnh(fibnum, dst->sa_family) == NULL) 199 return (EAFNOSUPPORT); 200 201 /* Verify the allowed flag mask. */ 202 KASSERT(((flags & ~(RTF_GATEWAY)) == 0), 203 ("invalid redirect flags: %x", flags)); 204 flags |= RTF_HOST | RTF_DYNAMIC; 205 206 /* Get the best ifa for the given interface and gateway. */ 207 if ((ifa = ifaof_ifpforaddr(gateway, ifp)) == NULL) 208 return (ENETUNREACH); 209 210 struct nhop_object *nh = nhop_alloc(fibnum, dst->sa_family); 211 if (nh == NULL) 212 return (ENOMEM); 213 214 nhop_set_gw(nh, gateway, flags & RTF_GATEWAY); 215 nhop_set_transmit_ifp(nh, ifp); 216 nhop_set_src(nh, ifa); 217 nhop_set_pxtype_flag(nh, NHF_HOST); 218 nhop_set_expire(nh, lifetime_sec + time_uptime); 219 nhop_set_redirect(nh, true); 220 rnd.rnd_nhop = nhop_get_nhop(nh, &error); 221 if (error == 0) { 222 error = rib_add_route_px(fibnum, dst, -1, 223 &rnd, RTM_F_CREATE, &rc); 224 } 225 226 if (error != 0) { 227 /* TODO: add per-fib redirect stats. */ 228 return (error); 229 } 230 231 RTSTAT_INC(rts_dynamic); 232 233 /* Send notification of a route addition to userland. */ 234 struct rt_addrinfo info = { 235 .rti_info[RTAX_DST] = dst, 236 .rti_info[RTAX_GATEWAY] = gateway, 237 .rti_info[RTAX_AUTHOR] = author, 238 }; 239 rt_missmsg_fib(RTM_REDIRECT, &info, flags | RTF_UP, error, fibnum); 240 241 return (0); 242 } 243 244 /* 245 * Routing table ioctl interface. 246 */ 247 int 248 rtioctl_fib(u_long req, caddr_t data, u_int fibnum) 249 { 250 251 /* 252 * If more ioctl commands are added here, make sure the proper 253 * super-user checks are being performed because it is possible for 254 * prison-root to make it this far if raw sockets have been enabled 255 * in jails. 256 */ 257 #ifdef INET 258 /* Multicast goop, grrr... */ 259 return mrt_ioctl ? mrt_ioctl(req, data, fibnum) : EOPNOTSUPP; 260 #else /* INET */ 261 return ENXIO; 262 #endif /* INET */ 263 } 264 265 struct ifaddr * 266 ifa_ifwithroute(int flags, const struct sockaddr *dst, 267 const struct sockaddr *gateway, u_int fibnum) 268 { 269 struct ifaddr *ifa; 270 271 NET_EPOCH_ASSERT(); 272 if ((flags & RTF_GATEWAY) == 0) { 273 /* 274 * If we are adding a route to an interface, 275 * and the interface is a pt to pt link 276 * we should search for the destination 277 * as our clue to the interface. Otherwise 278 * we can use the local address. 279 */ 280 ifa = NULL; 281 if (flags & RTF_HOST) 282 ifa = ifa_ifwithdstaddr(dst, fibnum); 283 if (ifa == NULL) 284 ifa = ifa_ifwithaddr(gateway); 285 } else { 286 /* 287 * If we are adding a route to a remote net 288 * or host, the gateway may still be on the 289 * other end of a pt to pt link. 290 */ 291 ifa = ifa_ifwithdstaddr(gateway, fibnum); 292 } 293 if (ifa == NULL) 294 ifa = ifa_ifwithnet(gateway, 0, fibnum); 295 if (ifa == NULL) { 296 struct nhop_object *nh; 297 298 nh = rib_lookup(fibnum, gateway, NHR_NONE, 0); 299 300 /* 301 * dismiss a gateway that is reachable only 302 * through the default router 303 */ 304 if ((nh == NULL) || (nh->nh_flags & NHF_DEFAULT)) 305 return (NULL); 306 ifa = nh->nh_ifa; 307 } 308 if (ifa->ifa_addr->sa_family != dst->sa_family) { 309 struct ifaddr *oifa = ifa; 310 ifa = ifaof_ifpforaddr(dst, ifa->ifa_ifp); 311 if (ifa == NULL) 312 ifa = oifa; 313 } 314 315 return (ifa); 316 } 317 318 /* 319 * Delete Routes for a Network Interface 320 * 321 * Called for each routing entry via the rnh->rnh_walktree() call above 322 * to delete all route entries referencing a detaching network interface. 323 * 324 * Arguments: 325 * rt pointer to rtentry 326 * nh pointer to nhop 327 * arg argument passed to rnh->rnh_walktree() - detaching interface 328 * 329 * Returns: 330 * 0 successful 331 * errno failed - reason indicated 332 */ 333 static int 334 rt_ifdelroute(const struct rtentry *rt, const struct nhop_object *nh, void *arg) 335 { 336 struct ifnet *ifp = arg; 337 338 if (nh->nh_ifp != ifp) 339 return (0); 340 341 /* 342 * Protect (sorta) against walktree recursion problems 343 * with cloned routes 344 */ 345 if ((rt->rte_flags & RTF_UP) == 0) 346 return (0); 347 348 return (1); 349 } 350 351 void 352 rt_flushifroutes(struct ifnet *ifp) 353 { 354 355 rib_foreach_table_walk_del(AF_UNSPEC, rt_ifdelroute, ifp); 356 } 357 358 /* 359 * Tries to extract interface from RTAX_IFP passed in rt_addrinfo. 360 * Interface can be specified ether as interface index (sdl_index) or 361 * the interface name (sdl_data). 362 * 363 * Returns found ifp or NULL 364 */ 365 static struct ifnet * 366 info_get_ifp(struct rt_addrinfo *info) 367 { 368 const struct sockaddr_dl *sdl; 369 370 sdl = (const struct sockaddr_dl *)info->rti_info[RTAX_IFP]; 371 if (sdl->sdl_family != AF_LINK) 372 return (NULL); 373 374 if (sdl->sdl_index != 0) 375 return (ifnet_byindex(sdl->sdl_index)); 376 if (sdl->sdl_nlen > 0) { 377 char if_name[IF_NAMESIZE]; 378 if (sdl->sdl_nlen + offsetof(struct sockaddr_dl, sdl_data) > sdl->sdl_len) 379 return (NULL); 380 if (sdl->sdl_nlen >= IF_NAMESIZE) 381 return (NULL); 382 bzero(if_name, sizeof(if_name)); 383 memcpy(if_name, sdl->sdl_data, sdl->sdl_nlen); 384 return (ifunit(if_name)); 385 } 386 387 return (NULL); 388 } 389 390 /* 391 * Calculates proper ifa/ifp for the cases when gateway AF is different 392 * from dst AF. 393 * 394 * Returns 0 on success. 395 */ 396 __noinline static int 397 rt_getifa_family(struct rt_addrinfo *info, uint32_t fibnum) 398 { 399 if (info->rti_ifp == NULL) { 400 struct ifaddr *ifa = NULL; 401 /* 402 * No transmit interface specified. Guess it by checking gw sa. 403 */ 404 const struct sockaddr *gw = info->rti_info[RTAX_GATEWAY]; 405 ifa = ifa_ifwithroute(RTF_GATEWAY, gw, gw, fibnum); 406 if (ifa == NULL) 407 return (ENETUNREACH); 408 info->rti_ifp = ifa->ifa_ifp; 409 } 410 411 /* Prefer address from outgoing interface */ 412 info->rti_ifa = ifaof_ifpforaddr(info->rti_info[RTAX_DST], info->rti_ifp); 413 #ifdef INET 414 if (info->rti_ifa == NULL) { 415 /* Use first found IPv4 address */ 416 bool loopback_ok = info->rti_ifp->if_flags & IFF_LOOPBACK; 417 info->rti_ifa = (struct ifaddr *)in_findlocal(fibnum, loopback_ok); 418 } 419 #endif 420 if (info->rti_ifa == NULL) 421 return (ENETUNREACH); 422 return (0); 423 } 424 425 /* 426 * Fills in rti_ifp and rti_ifa for the provided fib. 427 * 428 * Assume basic consistency checks are executed by callers: 429 * RTAX_DST exists, if RTF_GATEWAY is set, RTAX_GATEWAY exists as well. 430 */ 431 int 432 rt_getifa_fib(struct rt_addrinfo *info, u_int fibnum) 433 { 434 const struct sockaddr *dst, *gateway, *ifaaddr; 435 int error, flags; 436 437 dst = info->rti_info[RTAX_DST]; 438 gateway = info->rti_info[RTAX_GATEWAY]; 439 ifaaddr = info->rti_info[RTAX_IFA]; 440 flags = info->rti_flags; 441 442 /* 443 * ifp may be specified by sockaddr_dl 444 * when protocol address is ambiguous. 445 */ 446 error = 0; 447 448 /* If we have interface specified by RTAX_IFP address, try to use it */ 449 if ((info->rti_ifp == NULL) && (info->rti_info[RTAX_IFP] != NULL)) 450 info->rti_ifp = info_get_ifp(info); 451 /* 452 * If we have source address specified, try to find it 453 * TODO: avoid enumerating all ifas on all interfaces. 454 */ 455 if (info->rti_ifa == NULL && ifaaddr != NULL) 456 info->rti_ifa = ifa_ifwithaddr(ifaaddr); 457 if ((info->rti_ifa == NULL) && ((info->rti_flags & RTF_GATEWAY) != 0) && 458 (gateway->sa_family != dst->sa_family)) 459 return (rt_getifa_family(info, fibnum)); 460 if (info->rti_ifa == NULL) { 461 const struct sockaddr *sa; 462 463 /* 464 * Most common use case for the userland-supplied routes. 465 * 466 * Choose sockaddr to select ifa. 467 * -- if ifp is set -- 468 * Order of preference: 469 * 1) IFA address 470 * 2) gateway address 471 * Note: for interface routes link-level gateway address 472 * is specified to indicate the interface index without 473 * specifying RTF_GATEWAY. In this case, ignore gateway 474 * Note: gateway AF may be different from dst AF. In this case, 475 * ignore gateway 476 * 3) final destination. 477 * 4) if all of these fails, try to get at least link-level ifa. 478 * -- else -- 479 * try to lookup gateway or dst in the routing table to get ifa 480 */ 481 if (info->rti_info[RTAX_IFA] != NULL) 482 sa = info->rti_info[RTAX_IFA]; 483 else if ((info->rti_flags & RTF_GATEWAY) != 0 && 484 gateway->sa_family == dst->sa_family) 485 sa = gateway; 486 else 487 sa = dst; 488 if (info->rti_ifp != NULL) { 489 info->rti_ifa = ifaof_ifpforaddr(sa, info->rti_ifp); 490 /* Case 4 */ 491 if (info->rti_ifa == NULL && gateway != NULL) 492 info->rti_ifa = ifaof_ifpforaddr(gateway, info->rti_ifp); 493 } else if (dst != NULL && gateway != NULL) 494 info->rti_ifa = ifa_ifwithroute(flags, dst, gateway, 495 fibnum); 496 else if (sa != NULL) 497 info->rti_ifa = ifa_ifwithroute(flags, sa, sa, 498 fibnum); 499 } 500 if (info->rti_ifa != NULL) { 501 if (info->rti_ifp == NULL) 502 info->rti_ifp = info->rti_ifa->ifa_ifp; 503 } else 504 error = ENETUNREACH; 505 return (error); 506 } 507 508 void 509 rt_updatemtu(struct ifnet *ifp) 510 { 511 struct rib_head *rnh; 512 int mtu; 513 int i, j; 514 515 /* 516 * Try to update rt_mtu for all routes using this interface 517 * Unfortunately the only way to do this is to traverse all 518 * routing tables in all fibs/domains. 519 */ 520 for (i = 1; i <= AF_MAX; i++) { 521 mtu = if_getmtu_family(ifp, i); 522 for (j = 0; j < rt_numfibs; j++) { 523 rnh = rt_tables_get_rnh(j, i); 524 if (rnh == NULL) 525 continue; 526 nhops_update_ifmtu(rnh, ifp, mtu); 527 } 528 } 529 } 530 531 #if 0 532 int p_sockaddr(char *buf, int buflen, struct sockaddr *s); 533 int rt_print(char *buf, int buflen, struct rtentry *rt); 534 535 int 536 p_sockaddr(char *buf, int buflen, struct sockaddr *s) 537 { 538 void *paddr = NULL; 539 540 switch (s->sa_family) { 541 case AF_INET: 542 paddr = &((struct sockaddr_in *)s)->sin_addr; 543 break; 544 case AF_INET6: 545 paddr = &((struct sockaddr_in6 *)s)->sin6_addr; 546 break; 547 } 548 549 if (paddr == NULL) 550 return (0); 551 552 if (inet_ntop(s->sa_family, paddr, buf, buflen) == NULL) 553 return (0); 554 555 return (strlen(buf)); 556 } 557 558 int 559 rt_print(char *buf, int buflen, struct rtentry *rt) 560 { 561 struct sockaddr *addr, *mask; 562 int i = 0; 563 564 addr = rt_key(rt); 565 mask = rt_mask(rt); 566 567 i = p_sockaddr(buf, buflen, addr); 568 if (!(rt->rt_flags & RTF_HOST)) { 569 buf[i++] = '/'; 570 i += p_sockaddr(buf + i, buflen - i, mask); 571 } 572 573 if (rt->rt_flags & RTF_GATEWAY) { 574 buf[i++] = '>'; 575 i += p_sockaddr(buf + i, buflen - i, &rt->rt_nhop->gw_sa); 576 } 577 578 return (i); 579 } 580 #endif 581 582 void 583 rt_maskedcopy(const struct sockaddr *src, struct sockaddr *dst, 584 const struct sockaddr *netmask) 585 { 586 const u_char *cp1 = (const u_char *)src; 587 u_char *cp2 = (u_char *)dst; 588 const u_char *cp3 = (const u_char *)netmask; 589 u_char *cplim = cp2 + *cp3; 590 u_char *cplim2 = cp2 + *cp1; 591 592 *cp2++ = *cp1++; *cp2++ = *cp1++; /* copies sa_len & sa_family */ 593 cp3 += 2; 594 if (cplim > cplim2) 595 cplim = cplim2; 596 while (cp2 < cplim) 597 *cp2++ = *cp1++ & *cp3++; 598 if (cp2 < cplim2) 599 bzero((caddr_t)cp2, (unsigned)(cplim2 - cp2)); 600 } 601 602 /* 603 * Announce interface address arrival/withdraw 604 * Returns 0 on success. 605 */ 606 int 607 rt_addrmsg(int cmd, struct ifaddr *ifa, int fibnum) 608 { 609 #if defined(INET) || defined(INET6) 610 struct sockaddr *sa = ifa->ifa_addr; 611 struct ifnet *ifp = ifa->ifa_ifp; 612 #endif 613 614 KASSERT(cmd == RTM_ADD || cmd == RTM_DELETE, 615 ("unexpected cmd %d", cmd)); 616 KASSERT((fibnum >= 0 && fibnum < rt_numfibs), 617 ("%s: fib out of range 0 <=%d<%d", __func__, fibnum, rt_numfibs)); 618 619 EVENTHANDLER_DIRECT_INVOKE(rt_addrmsg, ifa, cmd); 620 621 #ifdef INET 622 if (sa->sa_family == AF_INET) { 623 char addrstr[INET_ADDRSTRLEN]; 624 char strbuf[INET_ADDRSTRLEN + 12]; 625 626 inet_ntoa_r(((struct sockaddr_in *)sa)->sin_addr, addrstr); 627 snprintf(strbuf, sizeof(strbuf), "address=%s", addrstr); 628 devctl_notify("IFNET", ifp->if_xname, 629 (cmd == RTM_ADD) ? "ADDR_ADD" : "ADDR_DEL", strbuf); 630 } 631 #endif 632 #ifdef INET6 633 if (sa->sa_family == AF_INET6) { 634 char addrstr[INET6_ADDRSTRLEN]; 635 char strbuf[INET6_ADDRSTRLEN + 12]; 636 637 ip6_sprintf(addrstr, IFA_IN6(ifa)); 638 snprintf(strbuf, sizeof(strbuf), "address=%s", addrstr); 639 devctl_notify("IFNET", ifp->if_xname, 640 (cmd == RTM_ADD) ? "ADDR_ADD" : "ADDR_DEL", strbuf); 641 } 642 #endif 643 644 if (V_rt_add_addr_allfibs) 645 fibnum = RT_ALL_FIBS; 646 return (rtsock_addrmsg(cmd, ifa, fibnum)); 647 } 648 649 /* 650 * Announce kernel-originated route addition/removal to rtsock based on @rt data. 651 * cmd: RTM_ cmd 652 * @rt: valid rtentry 653 * @nh: nhop object to announce 654 * @fibnum: fib id or RT_ALL_FIBS 655 * 656 * Returns 0 on success. 657 */ 658 int 659 rt_routemsg(int cmd, struct rtentry *rt, struct nhop_object *nh, 660 int fibnum) 661 { 662 663 KASSERT(cmd == RTM_ADD || cmd == RTM_DELETE, 664 ("unexpected cmd %d", cmd)); 665 666 KASSERT(fibnum == RT_ALL_FIBS || (fibnum >= 0 && fibnum < rt_numfibs), 667 ("%s: fib out of range 0 <=%d<%d", __func__, fibnum, rt_numfibs)); 668 669 KASSERT(rt_key(rt) != NULL, (":%s: rt_key must be supplied", __func__)); 670 671 return (rtsock_routemsg(cmd, rt, nh, fibnum)); 672 } 673 674 /* 675 * Announce kernel-originated route addition/removal to rtsock based on @rt data. 676 * cmd: RTM_ cmd 677 * @info: addrinfo structure with valid data. 678 * @fibnum: fib id or RT_ALL_FIBS 679 * 680 * Returns 0 on success. 681 */ 682 int 683 rt_routemsg_info(int cmd, struct rt_addrinfo *info, int fibnum) 684 { 685 686 KASSERT(cmd == RTM_ADD || cmd == RTM_DELETE || cmd == RTM_CHANGE, 687 ("unexpected cmd %d", cmd)); 688 689 KASSERT(fibnum == RT_ALL_FIBS || (fibnum >= 0 && fibnum < rt_numfibs), 690 ("%s: fib out of range 0 <=%d<%d", __func__, fibnum, rt_numfibs)); 691 692 KASSERT(info->rti_info[RTAX_DST] != NULL, (":%s: RTAX_DST must be supplied", __func__)); 693 694 return (rtsock_routemsg_info(cmd, info, fibnum)); 695 } 696