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 nhop_set_origin(nh, NH_ORIGIN_REDIRECT); 221 rnd.rnd_nhop = nhop_get_nhop(nh, &error); 222 if (error == 0) { 223 error = rib_add_route_px(fibnum, dst, -1, 224 &rnd, RTM_F_CREATE, &rc); 225 } 226 227 if (error != 0) { 228 /* TODO: add per-fib redirect stats. */ 229 return (error); 230 } 231 232 RTSTAT_INC(rts_dynamic); 233 234 /* Send notification of a route addition to userland. */ 235 struct rt_addrinfo info = { 236 .rti_info[RTAX_DST] = dst, 237 .rti_info[RTAX_GATEWAY] = gateway, 238 .rti_info[RTAX_AUTHOR] = author, 239 }; 240 rt_missmsg_fib(RTM_REDIRECT, &info, flags | RTF_UP, error, fibnum); 241 242 return (0); 243 } 244 245 /* 246 * Routing table ioctl interface. 247 */ 248 int 249 rtioctl_fib(u_long req, caddr_t data, u_int fibnum) 250 { 251 252 /* 253 * If more ioctl commands are added here, make sure the proper 254 * super-user checks are being performed because it is possible for 255 * prison-root to make it this far if raw sockets have been enabled 256 * in jails. 257 */ 258 #ifdef INET 259 /* Multicast goop, grrr... */ 260 return mrt_ioctl ? mrt_ioctl(req, data, fibnum) : EOPNOTSUPP; 261 #else /* INET */ 262 return ENXIO; 263 #endif /* INET */ 264 } 265 266 struct ifaddr * 267 ifa_ifwithroute(int flags, const struct sockaddr *dst, 268 const struct sockaddr *gateway, u_int fibnum) 269 { 270 struct ifaddr *ifa; 271 272 NET_EPOCH_ASSERT(); 273 if ((flags & RTF_GATEWAY) == 0) { 274 /* 275 * If we are adding a route to an interface, 276 * and the interface is a pt to pt link 277 * we should search for the destination 278 * as our clue to the interface. Otherwise 279 * we can use the local address. 280 */ 281 ifa = NULL; 282 if (flags & RTF_HOST) 283 ifa = ifa_ifwithdstaddr(dst, fibnum); 284 if (ifa == NULL) 285 ifa = ifa_ifwithaddr(gateway); 286 } else { 287 /* 288 * If we are adding a route to a remote net 289 * or host, the gateway may still be on the 290 * other end of a pt to pt link. 291 */ 292 ifa = ifa_ifwithdstaddr(gateway, fibnum); 293 } 294 if (ifa == NULL) 295 ifa = ifa_ifwithnet(gateway, 0, fibnum); 296 if (ifa == NULL) { 297 struct nhop_object *nh; 298 299 nh = rib_lookup(fibnum, gateway, NHR_NONE, 0); 300 301 /* 302 * dismiss a gateway that is reachable only 303 * through the default router 304 */ 305 if ((nh == NULL) || (nh->nh_flags & NHF_DEFAULT)) 306 return (NULL); 307 ifa = nh->nh_ifa; 308 } 309 if (ifa->ifa_addr->sa_family != dst->sa_family) { 310 struct ifaddr *oifa = ifa; 311 ifa = ifaof_ifpforaddr(dst, ifa->ifa_ifp); 312 if (ifa == NULL) 313 ifa = oifa; 314 } 315 316 return (ifa); 317 } 318 319 /* 320 * Delete Routes for a Network Interface 321 * 322 * Called for each routing entry via the rnh->rnh_walktree() call above 323 * to delete all route entries referencing a detaching network interface. 324 * 325 * Arguments: 326 * rt pointer to rtentry 327 * nh pointer to nhop 328 * arg argument passed to rnh->rnh_walktree() - detaching interface 329 * 330 * Returns: 331 * 0 successful 332 * errno failed - reason indicated 333 */ 334 static int 335 rt_ifdelroute(const struct rtentry *rt, const struct nhop_object *nh, void *arg) 336 { 337 struct ifnet *ifp = arg; 338 339 if (nh->nh_ifp != ifp) 340 return (0); 341 342 /* 343 * Protect (sorta) against walktree recursion problems 344 * with cloned routes 345 */ 346 if ((rt->rte_flags & RTF_UP) == 0) 347 return (0); 348 349 return (1); 350 } 351 352 void 353 rt_flushifroutes(struct ifnet *ifp) 354 { 355 356 rib_foreach_table_walk_del(AF_UNSPEC, rt_ifdelroute, ifp); 357 } 358 359 /* 360 * Tries to extract interface from RTAX_IFP passed in rt_addrinfo. 361 * Interface can be specified ether as interface index (sdl_index) or 362 * the interface name (sdl_data). 363 * 364 * Returns found ifp or NULL 365 */ 366 static struct ifnet * 367 info_get_ifp(struct rt_addrinfo *info) 368 { 369 const struct sockaddr_dl *sdl; 370 371 sdl = (const struct sockaddr_dl *)info->rti_info[RTAX_IFP]; 372 if (sdl->sdl_family != AF_LINK) 373 return (NULL); 374 375 if (sdl->sdl_index != 0) 376 return (ifnet_byindex(sdl->sdl_index)); 377 if (sdl->sdl_nlen > 0) { 378 char if_name[IF_NAMESIZE]; 379 if (sdl->sdl_nlen + offsetof(struct sockaddr_dl, sdl_data) > sdl->sdl_len) 380 return (NULL); 381 if (sdl->sdl_nlen >= IF_NAMESIZE) 382 return (NULL); 383 bzero(if_name, sizeof(if_name)); 384 memcpy(if_name, sdl->sdl_data, sdl->sdl_nlen); 385 return (ifunit(if_name)); 386 } 387 388 return (NULL); 389 } 390 391 /* 392 * Calculates proper ifa/ifp for the cases when gateway AF is different 393 * from dst AF. 394 * 395 * Returns 0 on success. 396 */ 397 __noinline static int 398 rt_getifa_family(struct rt_addrinfo *info, uint32_t fibnum) 399 { 400 if (info->rti_ifp == NULL) { 401 struct ifaddr *ifa = NULL; 402 /* 403 * No transmit interface specified. Guess it by checking gw sa. 404 */ 405 const struct sockaddr *gw = info->rti_info[RTAX_GATEWAY]; 406 ifa = ifa_ifwithroute(RTF_GATEWAY, gw, gw, fibnum); 407 if (ifa == NULL) 408 return (ENETUNREACH); 409 info->rti_ifp = ifa->ifa_ifp; 410 } 411 412 /* Prefer address from outgoing interface */ 413 info->rti_ifa = ifaof_ifpforaddr(info->rti_info[RTAX_DST], info->rti_ifp); 414 #ifdef INET 415 if (info->rti_ifa == NULL) { 416 /* Use first found IPv4 address */ 417 bool loopback_ok = info->rti_ifp->if_flags & IFF_LOOPBACK; 418 info->rti_ifa = (struct ifaddr *)in_findlocal(fibnum, loopback_ok); 419 } 420 #endif 421 if (info->rti_ifa == NULL) 422 return (ENETUNREACH); 423 return (0); 424 } 425 426 /* 427 * Fills in rti_ifp and rti_ifa for the provided fib. 428 * 429 * Assume basic consistency checks are executed by callers: 430 * RTAX_DST exists, if RTF_GATEWAY is set, RTAX_GATEWAY exists as well. 431 */ 432 int 433 rt_getifa_fib(struct rt_addrinfo *info, u_int fibnum) 434 { 435 const struct sockaddr *dst, *gateway, *ifaaddr; 436 int error, flags; 437 438 dst = info->rti_info[RTAX_DST]; 439 gateway = info->rti_info[RTAX_GATEWAY]; 440 ifaaddr = info->rti_info[RTAX_IFA]; 441 flags = info->rti_flags; 442 443 /* 444 * ifp may be specified by sockaddr_dl 445 * when protocol address is ambiguous. 446 */ 447 error = 0; 448 449 /* If we have interface specified by RTAX_IFP address, try to use it */ 450 if ((info->rti_ifp == NULL) && (info->rti_info[RTAX_IFP] != NULL)) 451 info->rti_ifp = info_get_ifp(info); 452 /* 453 * If we have source address specified, try to find it 454 * TODO: avoid enumerating all ifas on all interfaces. 455 */ 456 if (info->rti_ifa == NULL && ifaaddr != NULL) 457 info->rti_ifa = ifa_ifwithaddr(ifaaddr); 458 if ((info->rti_ifa == NULL) && ((info->rti_flags & RTF_GATEWAY) != 0) && 459 (gateway->sa_family != dst->sa_family)) 460 return (rt_getifa_family(info, fibnum)); 461 if (info->rti_ifa == NULL) { 462 const struct sockaddr *sa; 463 464 /* 465 * Most common use case for the userland-supplied routes. 466 * 467 * Choose sockaddr to select ifa. 468 * -- if ifp is set -- 469 * Order of preference: 470 * 1) IFA address 471 * 2) gateway address 472 * Note: for interface routes link-level gateway address 473 * is specified to indicate the interface index without 474 * specifying RTF_GATEWAY. In this case, ignore gateway 475 * Note: gateway AF may be different from dst AF. In this case, 476 * ignore gateway 477 * 3) final destination. 478 * 4) if all of these fails, try to get at least link-level ifa. 479 * -- else -- 480 * try to lookup gateway or dst in the routing table to get ifa 481 */ 482 if (info->rti_info[RTAX_IFA] != NULL) 483 sa = info->rti_info[RTAX_IFA]; 484 else if ((info->rti_flags & RTF_GATEWAY) != 0 && 485 gateway->sa_family == dst->sa_family) 486 sa = gateway; 487 else 488 sa = dst; 489 if (info->rti_ifp != NULL) { 490 info->rti_ifa = ifaof_ifpforaddr(sa, info->rti_ifp); 491 /* Case 4 */ 492 if (info->rti_ifa == NULL && gateway != NULL) 493 info->rti_ifa = ifaof_ifpforaddr(gateway, info->rti_ifp); 494 } else if (dst != NULL && gateway != NULL) 495 info->rti_ifa = ifa_ifwithroute(flags, dst, gateway, 496 fibnum); 497 else if (sa != NULL) 498 info->rti_ifa = ifa_ifwithroute(flags, sa, sa, 499 fibnum); 500 } 501 if (info->rti_ifa != NULL) { 502 if (info->rti_ifp == NULL) 503 info->rti_ifp = info->rti_ifa->ifa_ifp; 504 } else 505 error = ENETUNREACH; 506 return (error); 507 } 508 509 void 510 rt_updatemtu(struct ifnet *ifp) 511 { 512 struct rib_head *rnh; 513 int mtu; 514 int i, j; 515 516 /* 517 * Try to update rt_mtu for all routes using this interface 518 * Unfortunately the only way to do this is to traverse all 519 * routing tables in all fibs/domains. 520 */ 521 for (i = 1; i <= AF_MAX; i++) { 522 mtu = if_getmtu_family(ifp, i); 523 for (j = 0; j < rt_numfibs; j++) { 524 rnh = rt_tables_get_rnh(j, i); 525 if (rnh == NULL) 526 continue; 527 nhops_update_ifmtu(rnh, ifp, mtu); 528 } 529 } 530 } 531 532 #if 0 533 int p_sockaddr(char *buf, int buflen, struct sockaddr *s); 534 int rt_print(char *buf, int buflen, struct rtentry *rt); 535 536 int 537 p_sockaddr(char *buf, int buflen, struct sockaddr *s) 538 { 539 void *paddr = NULL; 540 541 switch (s->sa_family) { 542 case AF_INET: 543 paddr = &((struct sockaddr_in *)s)->sin_addr; 544 break; 545 case AF_INET6: 546 paddr = &((struct sockaddr_in6 *)s)->sin6_addr; 547 break; 548 } 549 550 if (paddr == NULL) 551 return (0); 552 553 if (inet_ntop(s->sa_family, paddr, buf, buflen) == NULL) 554 return (0); 555 556 return (strlen(buf)); 557 } 558 559 int 560 rt_print(char *buf, int buflen, struct rtentry *rt) 561 { 562 struct sockaddr *addr, *mask; 563 int i = 0; 564 565 addr = rt_key(rt); 566 mask = rt_mask(rt); 567 568 i = p_sockaddr(buf, buflen, addr); 569 if (!(rt->rt_flags & RTF_HOST)) { 570 buf[i++] = '/'; 571 i += p_sockaddr(buf + i, buflen - i, mask); 572 } 573 574 if (rt->rt_flags & RTF_GATEWAY) { 575 buf[i++] = '>'; 576 i += p_sockaddr(buf + i, buflen - i, &rt->rt_nhop->gw_sa); 577 } 578 579 return (i); 580 } 581 #endif 582 583 void 584 rt_maskedcopy(const struct sockaddr *src, struct sockaddr *dst, 585 const struct sockaddr *netmask) 586 { 587 const u_char *cp1 = (const u_char *)src; 588 u_char *cp2 = (u_char *)dst; 589 const u_char *cp3 = (const u_char *)netmask; 590 u_char *cplim = cp2 + *cp3; 591 u_char *cplim2 = cp2 + *cp1; 592 593 *cp2++ = *cp1++; *cp2++ = *cp1++; /* copies sa_len & sa_family */ 594 cp3 += 2; 595 if (cplim > cplim2) 596 cplim = cplim2; 597 while (cp2 < cplim) 598 *cp2++ = *cp1++ & *cp3++; 599 if (cp2 < cplim2) 600 bzero((caddr_t)cp2, (unsigned)(cplim2 - cp2)); 601 } 602 603 /* 604 * Announce interface address arrival/withdraw 605 * Returns 0 on success. 606 */ 607 int 608 rt_addrmsg(int cmd, struct ifaddr *ifa, int fibnum) 609 { 610 #if defined(INET) || defined(INET6) 611 struct sockaddr *sa = ifa->ifa_addr; 612 struct ifnet *ifp = ifa->ifa_ifp; 613 #endif 614 615 KASSERT(cmd == RTM_ADD || cmd == RTM_DELETE, 616 ("unexpected cmd %d", cmd)); 617 KASSERT((fibnum >= 0 && fibnum < rt_numfibs), 618 ("%s: fib out of range 0 <=%d<%d", __func__, fibnum, rt_numfibs)); 619 620 EVENTHANDLER_DIRECT_INVOKE(rt_addrmsg, ifa, cmd); 621 622 #ifdef INET 623 if (sa->sa_family == AF_INET) { 624 char addrstr[INET_ADDRSTRLEN]; 625 char strbuf[INET_ADDRSTRLEN + 12]; 626 627 inet_ntoa_r(((struct sockaddr_in *)sa)->sin_addr, addrstr); 628 snprintf(strbuf, sizeof(strbuf), "address=%s", addrstr); 629 devctl_notify("IFNET", ifp->if_xname, 630 (cmd == RTM_ADD) ? "ADDR_ADD" : "ADDR_DEL", strbuf); 631 } 632 #endif 633 #ifdef INET6 634 if (sa->sa_family == AF_INET6) { 635 char addrstr[INET6_ADDRSTRLEN]; 636 char strbuf[INET6_ADDRSTRLEN + 12]; 637 638 ip6_sprintf(addrstr, IFA_IN6(ifa)); 639 snprintf(strbuf, sizeof(strbuf), "address=%s", addrstr); 640 devctl_notify("IFNET", ifp->if_xname, 641 (cmd == RTM_ADD) ? "ADDR_ADD" : "ADDR_DEL", strbuf); 642 } 643 #endif 644 645 if (V_rt_add_addr_allfibs) 646 fibnum = RT_ALL_FIBS; 647 return (rtsock_addrmsg(cmd, ifa, fibnum)); 648 } 649 650 /* 651 * Announce kernel-originated route addition/removal to rtsock based on @rt data. 652 * cmd: RTM_ cmd 653 * @rt: valid rtentry 654 * @nh: nhop object to announce 655 * @fibnum: fib id or RT_ALL_FIBS 656 * 657 * Returns 0 on success. 658 */ 659 int 660 rt_routemsg(int cmd, struct rtentry *rt, struct nhop_object *nh, 661 int fibnum) 662 { 663 664 KASSERT(cmd == RTM_ADD || cmd == RTM_DELETE, 665 ("unexpected cmd %d", cmd)); 666 667 KASSERT(fibnum == RT_ALL_FIBS || (fibnum >= 0 && fibnum < rt_numfibs), 668 ("%s: fib out of range 0 <=%d<%d", __func__, fibnum, rt_numfibs)); 669 670 KASSERT(rt_key(rt) != NULL, (":%s: rt_key must be supplied", __func__)); 671 672 return (rtsock_routemsg(cmd, rt, nh, fibnum)); 673 } 674 675 /* 676 * Announce kernel-originated route addition/removal to rtsock based on @rt data. 677 * cmd: RTM_ cmd 678 * @info: addrinfo structure with valid data. 679 * @fibnum: fib id or RT_ALL_FIBS 680 * 681 * Returns 0 on success. 682 */ 683 int 684 rt_routemsg_info(int cmd, struct rt_addrinfo *info, int fibnum) 685 { 686 687 KASSERT(cmd == RTM_ADD || cmd == RTM_DELETE || cmd == RTM_CHANGE, 688 ("unexpected cmd %d", cmd)); 689 690 KASSERT(fibnum == RT_ALL_FIBS || (fibnum >= 0 && fibnum < rt_numfibs), 691 ("%s: fib out of range 0 <=%d<%d", __func__, fibnum, rt_numfibs)); 692 693 KASSERT(info->rti_info[RTAX_DST] != NULL, (":%s: RTAX_DST must be supplied", __func__)); 694 695 return (rtsock_routemsg_info(cmd, info, fibnum)); 696 } 697 698 /* Netlink-related callbacks needed to glue rtsock, netlink and linuxolator */ 699 static void 700 ignore_route_event(uint32_t fibnum, const struct rib_cmd_info *rc) 701 { 702 } 703 static struct rtbridge ignore_cb = { .route_f = ignore_route_event }; 704 705 void *linux_netlink_p = NULL; /* Callback pointer for Linux translator functions */ 706 struct rtbridge *rtsock_callback_p = &ignore_cb; 707 struct rtbridge *netlink_callback_p = &ignore_cb; 708