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 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 * 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 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 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 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 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 * 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 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 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 * 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 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 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 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 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 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 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 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 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