1 /* 2 * Copyright 2006 Sun Microsystems, Inc. All rights reserved. 3 * Use is subject to license terms. 4 */ 5 6 /* 7 * Copyright (c) 1988, 1991, 1993 8 * The Regents of the University of California. All rights reserved. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * @(#)rtsock.c 8.6 (Berkeley) 2/11/95 39 */ 40 41 #pragma ident "%Z%%M% %I% %E% SMI" 42 43 /* 44 * This file contains routines that processes routing socket requests. 45 */ 46 47 #include <sys/types.h> 48 #include <sys/stream.h> 49 #include <sys/stropts.h> 50 #include <sys/ddi.h> 51 #include <sys/cmn_err.h> 52 #include <sys/debug.h> 53 #include <sys/policy.h> 54 #include <sys/zone.h> 55 56 #include <sys/systm.h> 57 #include <sys/param.h> 58 #include <sys/socket.h> 59 #include <sys/strsun.h> 60 #include <net/if.h> 61 #include <net/route.h> 62 #include <netinet/in.h> 63 #include <net/if_dl.h> 64 #include <netinet/ip6.h> 65 66 #include <inet/common.h> 67 #include <inet/ip.h> 68 #include <inet/ip6.h> 69 #include <inet/ip_if.h> 70 #include <inet/ip_ire.h> 71 #include <inet/ip_ftable.h> 72 #include <inet/ip_rts.h> 73 74 #include <inet/ipclassifier.h> 75 76 #include <sys/tsol/tndb.h> 77 #include <sys/tsol/tnet.h> 78 79 #define RTS_MSG_SIZE(type, rtm_addrs, af, sacnt) \ 80 (rts_data_msg_size(rtm_addrs, af, sacnt) + rts_header_msg_size(type)) 81 82 static size_t rts_copyfromsockaddr(struct sockaddr *sa, in6_addr_t *addrp); 83 static void rts_fill_msg(int type, int rtm_addrs, ipaddr_t dst, 84 ipaddr_t mask, ipaddr_t gateway, ipaddr_t src_addr, ipaddr_t brd_addr, 85 ipaddr_t author, const ipif_t *ipif, mblk_t *mp, uint_t, const tsol_gc_t *); 86 static int rts_getaddrs(rt_msghdr_t *rtm, in6_addr_t *dst_addrp, 87 in6_addr_t *gw_addrp, in6_addr_t *net_maskp, in6_addr_t *authorp, 88 in6_addr_t *if_addrp, in6_addr_t *src_addrp, ushort_t *indexp, 89 ushort_t *src_indexp, sa_family_t *afp, tsol_rtsecattr_t *rtsecattr, 90 int *error); 91 static void rts_getifdata(if_data_t *if_data, const ipif_t *ipif); 92 static int rts_getmetrics(ire_t *ire, rt_metrics_t *metrics); 93 static mblk_t *rts_rtmget(mblk_t *mp, ire_t *ire, ire_t *sire, 94 sa_family_t af); 95 static void rts_setmetrics(ire_t *ire, uint_t which, rt_metrics_t *metrics); 96 static void ip_rts_request_retry(ipsq_t *, queue_t *q, mblk_t *mp, void *); 97 98 /* 99 * Send the ack to all the routing queues. In case of the originating queue, 100 * send it only if the loopback is set. 101 * 102 * Messages are sent upstream only on routing sockets that did not specify an 103 * address family when they were created or when the address family matches the 104 * one specified by the caller. 105 * 106 */ 107 void 108 rts_queue_input(mblk_t *mp, queue_t *q, sa_family_t af) 109 { 110 mblk_t *mp1; 111 int checkqfull; 112 conn_t *connp, *next_connp; 113 114 mutex_enter(&rts_clients.connf_lock); 115 connp = rts_clients.connf_head; 116 117 while (connp != NULL) { 118 /* 119 * If there was a family specified when this routing socket was 120 * created and it doesn't match the family of the message to 121 * copy, then continue. 122 */ 123 if ((connp->conn_proto != AF_UNSPEC) && 124 (connp->conn_proto != af)) { 125 connp = connp->conn_next; 126 continue; 127 } 128 /* 129 * For the originating queue, we only copy the message upstream 130 * if loopback is set. For others reading on the routing 131 * socket, we check if there is room upstream for a copy of the 132 * message. 133 */ 134 if ((q != NULL) && (CONNP_TO_RQ(connp) == RD(q))) { 135 if (connp->conn_loopback == 0) { 136 connp = connp->conn_next; 137 continue; 138 } 139 checkqfull = B_FALSE; 140 } else { 141 checkqfull = B_TRUE; 142 } 143 CONN_INC_REF(connp); 144 mutex_exit(&rts_clients.connf_lock); 145 if (!checkqfull || canputnext(CONNP_TO_RQ(connp))) { 146 mp1 = dupmsg(mp); 147 if (mp1 == NULL) 148 mp1 = copymsg(mp); 149 if (mp1 != NULL) 150 putnext(CONNP_TO_RQ(connp), mp1); 151 } 152 153 mutex_enter(&rts_clients.connf_lock); 154 /* Follow the next pointer before releasing the conn. */ 155 next_connp = connp->conn_next; 156 CONN_DEC_REF(connp); 157 connp = next_connp; 158 } 159 mutex_exit(&rts_clients.connf_lock); 160 freemsg(mp); 161 } 162 163 /* 164 * Takes an ire and sends an ack to all the routing sockets. This 165 * routine is used 166 * - when a route is created/deleted through the ioctl interface. 167 * - when ire_expire deletes a stale redirect 168 */ 169 void 170 ip_rts_rtmsg(int type, ire_t *ire, int error) 171 { 172 mblk_t *mp; 173 rt_msghdr_t *rtm; 174 int rtm_addrs = (RTA_DST | RTA_NETMASK | RTA_GATEWAY); 175 sa_family_t af; 176 in6_addr_t gw_addr_v6; 177 178 if (ire == NULL) 179 return; 180 ASSERT(ire->ire_ipversion == IPV4_VERSION || 181 ire->ire_ipversion == IPV6_VERSION); 182 183 if (ire->ire_flags & RTF_SETSRC) 184 rtm_addrs |= RTA_SRC; 185 186 switch (ire->ire_ipversion) { 187 case IPV4_VERSION: 188 af = AF_INET; 189 mp = rts_alloc_msg(type, rtm_addrs, af, 0); 190 if (mp == NULL) 191 return; 192 rts_fill_msg(type, rtm_addrs, ire->ire_addr, ire->ire_mask, 193 ire->ire_gateway_addr, ire->ire_src_addr, 0, 0, NULL, mp, 194 0, NULL); 195 break; 196 case IPV6_VERSION: 197 af = AF_INET6; 198 mp = rts_alloc_msg(type, rtm_addrs, af, 0); 199 if (mp == NULL) 200 return; 201 mutex_enter(&ire->ire_lock); 202 gw_addr_v6 = ire->ire_gateway_addr_v6; 203 mutex_exit(&ire->ire_lock); 204 rts_fill_msg_v6(type, rtm_addrs, &ire->ire_addr_v6, 205 &ire->ire_mask_v6, &gw_addr_v6, 206 &ire->ire_src_addr_v6, &ipv6_all_zeros, &ipv6_all_zeros, 207 NULL, mp, 0, NULL); 208 break; 209 } 210 rtm = (rt_msghdr_t *)mp->b_rptr; 211 mp->b_wptr = (uchar_t *)&mp->b_rptr[rtm->rtm_msglen]; 212 rtm->rtm_addrs = rtm_addrs; 213 rtm->rtm_flags = ire->ire_flags; 214 if (error != 0) 215 rtm->rtm_errno = error; 216 else 217 rtm->rtm_flags |= RTF_DONE; 218 rts_queue_input(mp, NULL, af); 219 } 220 221 /* ARGSUSED */ 222 static void 223 ip_rts_request_retry(ipsq_t *dummy_sq, queue_t *q, mblk_t *mp, void *dummy) 224 { 225 (void) ip_rts_request(q, mp, DB_CRED(mp)); 226 } 227 228 /* 229 * Processes requests received on a routing socket. It extracts all the 230 * arguments and calls the appropriate function to process the request. 231 * 232 * RTA_SRC bit flag requests are sent by mipagent and 'route -setsrc'. 233 * RTA_SRCIFP bit flag requests are sent by mipagent only. 234 * 235 * In general, this function does not consume the message supplied but rather 236 * sends the message upstream with an appropriate UNIX errno. 237 * 238 * We may need to restart this operation if the ipif cannot be looked up 239 * due to an exclusive operation that is currently in progress. The restart 240 * entry point is ip_rts_request_retry. While the request is enqueud in the 241 * ipsq the ioctl could be aborted and the conn close. To ensure that we don't 242 * have stale conn pointers, ip_wput_ioctl does a conn refhold. This is 243 * released at the completion of the rts ioctl at the end of this function 244 * by calling CONN_OPER_PENDING_DONE or when the ioctl is aborted and 245 * conn close occurs in conn_ioctl_cleanup. 246 */ 247 int 248 ip_rts_request(queue_t *q, mblk_t *mp, cred_t *ioc_cr) 249 { 250 rt_msghdr_t *rtm = NULL; 251 in6_addr_t dst_addr_v6; 252 in6_addr_t src_addr_v6; 253 in6_addr_t gw_addr_v6; 254 in6_addr_t net_mask_v6; 255 in6_addr_t author_v6; 256 in6_addr_t if_addr_v6; 257 mblk_t *mp1, *ioc_mp = mp; 258 ire_t *ire = NULL; 259 ire_t *sire = NULL; 260 int error = 0; 261 int match_flags = MATCH_IRE_DSTONLY; 262 int match_flags_local = MATCH_IRE_TYPE | MATCH_IRE_GW; 263 int found_addrs; 264 sa_family_t af; 265 ipaddr_t dst_addr; 266 ipaddr_t gw_addr; 267 ipaddr_t src_addr; 268 ipaddr_t net_mask; 269 ushort_t index; 270 ushort_t src_index; 271 ipif_t *ipif = NULL; 272 ipif_t *src_ipif = NULL; 273 ipif_t *tmp_ipif = NULL; 274 IOCP iocp = (IOCP)mp->b_rptr; 275 conn_t *connp; 276 boolean_t gcgrp_xtraref = B_FALSE; 277 tsol_gcgrp_addr_t ga; 278 tsol_rtsecattr_t rtsecattr; 279 struct rtsa_s *rtsap = NULL; 280 tsol_gcgrp_t *gcgrp = NULL; 281 tsol_gc_t *gc = NULL; 282 ts_label_t *tsl = crgetlabel(ioc_cr); 283 284 ip1dbg(("ip_rts_request: mp is %x\n", DB_TYPE(mp))); 285 286 ASSERT(CONN_Q(q)); 287 connp = Q_TO_CONN(q); 288 289 ASSERT(mp->b_cont != NULL); 290 /* ioc_mp holds mp */ 291 mp = mp->b_cont; 292 293 /* 294 * The Routing Socket data starts on 295 * next block. If there is no next block 296 * this is an indication from routing module 297 * that it is a routing socket stream queue. 298 */ 299 if (mp->b_cont != NULL) { 300 mp1 = dupmsg(mp->b_cont); 301 if (mp1 == NULL) { 302 freemsg(mp); 303 error = ENOBUFS; 304 goto done; 305 } 306 mp = mp1; 307 } else { 308 /* 309 * This is a message from RTS module 310 * indicating that this is a Routing Socket 311 * Stream. Insert this conn_t in routing 312 * socket client list. 313 */ 314 315 connp->conn_loopback = 1; 316 ipcl_hash_insert_wildcard(&rts_clients, connp); 317 318 goto done; 319 } 320 if (mp->b_cont != NULL && !pullupmsg(mp, -1)) { 321 freemsg(mp); 322 error = EINVAL; 323 goto done; 324 } 325 if ((mp->b_wptr - mp->b_rptr) < sizeof (rt_msghdr_t)) { 326 freemsg(mp); 327 error = EINVAL; 328 goto done; 329 } 330 331 /* 332 * Check the routing message for basic consistency including the 333 * version number and that the number of octets written is the same 334 * as specified by the rtm_msglen field. 335 * 336 * At this point, an error can be delivered back via rtm_errno. 337 */ 338 rtm = (rt_msghdr_t *)mp->b_rptr; 339 if ((mp->b_wptr - mp->b_rptr) != rtm->rtm_msglen) { 340 error = EINVAL; 341 goto done; 342 } 343 if (rtm->rtm_version != RTM_VERSION) { 344 error = EPROTONOSUPPORT; 345 goto done; 346 } 347 348 /* Only allow RTM_GET or RTM_RESOLVE for unprivileged process */ 349 if (rtm->rtm_type != RTM_GET && 350 rtm->rtm_type != RTM_RESOLVE && 351 (ioc_cr == NULL || 352 secpolicy_net_config(ioc_cr, B_FALSE) != 0)) { 353 error = EPERM; 354 goto done; 355 } 356 357 found_addrs = rts_getaddrs(rtm, &dst_addr_v6, &gw_addr_v6, &net_mask_v6, 358 &author_v6, &if_addr_v6, &src_addr_v6, &index, &src_index, &af, 359 &rtsecattr, &error); 360 361 if (error != 0) 362 goto done; 363 364 if ((found_addrs & RTA_DST) == 0) { 365 error = EINVAL; 366 goto done; 367 } 368 369 /* 370 * Based on the address family of the destination address, determine 371 * the destination, gateway and netmask and return the appropriate error 372 * if an unknown address family was specified (following the errno 373 * values that 4.4BSD-Lite2 returns.) 374 */ 375 switch (af) { 376 case AF_INET: 377 /* 378 * RTA_SRCIFP is supported for interface route only. 379 * Thus a gateway route with srcifindex is rejected, 380 * except if it's a request to add reverse tunnel 381 * route. 382 */ 383 if ((rtm->rtm_flags & RTF_GATEWAY) && 384 (found_addrs & RTA_SRCIFP) && 385 !(found_addrs & RTA_SRC)) { 386 error = EINVAL; 387 goto done; 388 } 389 IN6_V4MAPPED_TO_IPADDR(&dst_addr_v6, dst_addr); 390 IN6_V4MAPPED_TO_IPADDR(&src_addr_v6, src_addr); 391 IN6_V4MAPPED_TO_IPADDR(&gw_addr_v6, gw_addr); 392 if (((found_addrs & RTA_NETMASK) == 0) || 393 (rtm->rtm_flags & RTF_HOST)) 394 net_mask = IP_HOST_MASK; 395 else 396 IN6_V4MAPPED_TO_IPADDR(&net_mask_v6, net_mask); 397 break; 398 case AF_INET6: 399 /* 400 * RTA_SRCIFP is not a valid flag for IPv6 routes. 401 */ 402 if (found_addrs & RTA_SRCIFP) { 403 error = EINVAL; 404 goto done; 405 } 406 if (((found_addrs & RTA_NETMASK) == 0) || 407 (rtm->rtm_flags & RTF_HOST)) 408 net_mask_v6 = ipv6_all_ones; 409 break; 410 default: 411 /* 412 * These errno values are meant to be compatible with 413 * 4.4BSD-Lite2 for the given message types. 414 */ 415 switch (rtm->rtm_type) { 416 case RTM_ADD: 417 case RTM_DELETE: 418 error = ESRCH; 419 goto done; 420 case RTM_GET: 421 case RTM_CHANGE: 422 error = EAFNOSUPPORT; 423 goto done; 424 default: 425 error = EOPNOTSUPP; 426 goto done; 427 } 428 } 429 430 /* 431 * At this point, the address family must be something known. 432 */ 433 ASSERT(af == AF_INET || af == AF_INET6); 434 435 if (index != 0) { 436 ill_t *ill; 437 438 /* 439 * IPC must be refheld somewhere in ip_wput_nondata or 440 * ip_wput_ioctl etc... and cleaned up if ioctl is killed. 441 * If ILL_CHANGING the request is queued in the ipsq. 442 */ 443 ill = ill_lookup_on_ifindex(index, af == AF_INET6, 444 CONNP_TO_WQ(connp), ioc_mp, ip_rts_request_retry, &error); 445 if (ill == NULL) { 446 if (error != EINPROGRESS) 447 error = EINVAL; 448 goto done; 449 } 450 451 ipif = ipif_get_next_ipif(NULL, ill); 452 ill_refrele(ill); 453 /* 454 * If this is replacement ipif, prevent a route from 455 * being added. 456 */ 457 if (ipif != NULL && ipif->ipif_replace_zero) { 458 error = ENETDOWN; 459 goto done; 460 } 461 match_flags |= MATCH_IRE_ILL; 462 } 463 464 /* RTA_SRCIFP is unsupported on AF_INET6. */ 465 if (af == AF_INET && src_index != 0) { 466 ill_t *ill; 467 468 /* If ILL_CHANGING the request is queued in the ipsq. */ 469 ill = ill_lookup_on_ifindex(src_index, B_FALSE, 470 CONNP_TO_WQ(connp), ioc_mp, ip_rts_request_retry, &error); 471 if (ill == NULL) { 472 if (error != EINPROGRESS) 473 error = EINVAL; 474 goto done; 475 } 476 477 src_ipif = ipif_get_next_ipif(NULL, ill); 478 ill_refrele(ill); 479 } 480 /* 481 * If a netmask was supplied in the message, then subsequent route 482 * lookups will attempt to match on the netmask as well. 483 */ 484 if ((found_addrs & RTA_NETMASK) != 0) 485 match_flags |= MATCH_IRE_MASK; 486 487 /* 488 * We only process any passed-in route security attributes for 489 * either RTM_ADD or RTM_CHANGE message; We overload them 490 * to do an RTM_GET as a different label; ignore otherwise. 491 */ 492 if (rtm->rtm_type == RTM_ADD || rtm->rtm_type == RTM_CHANGE || 493 rtm->rtm_type == RTM_GET) { 494 ASSERT(rtsecattr.rtsa_cnt <= TSOL_RTSA_REQUEST_MAX); 495 if (rtsecattr.rtsa_cnt > 0) 496 rtsap = &rtsecattr.rtsa_attr[0]; 497 } 498 499 switch (rtm->rtm_type) { 500 case RTM_ADD: 501 /* if we are adding a route, gateway is a must */ 502 if ((found_addrs & RTA_GATEWAY) == 0) { 503 error = EINVAL; 504 goto done; 505 } 506 507 /* Multirouting does not support net routes. */ 508 if ((rtm->rtm_flags & (RTF_MULTIRT | RTF_HOST)) == 509 RTF_MULTIRT) { 510 error = EADDRNOTAVAIL; 511 goto done; 512 } 513 514 /* 515 * Multirouting and user-specified source addresses 516 * do not support interface based routing. 517 * Assigning a source address to an interface based 518 * route is achievable by plumbing a new ipif and 519 * setting up the interface route via this ipif, 520 * though. 521 */ 522 if (rtm->rtm_flags & (RTF_MULTIRT | RTF_SETSRC)) { 523 if ((rtm->rtm_flags & RTF_GATEWAY) == 0) { 524 error = EADDRNOTAVAIL; 525 goto done; 526 } 527 } 528 529 switch (af) { 530 case AF_INET: 531 if (src_addr != INADDR_ANY) { 532 /* 533 * If there is a source address, but 534 * no RTF_SETSRC modifier, setup a MobileIP 535 * reverse tunnel. 536 */ 537 if ((rtm->rtm_flags & RTF_SETSRC) == 0) { 538 error = ip_mrtun_rt_add(src_addr, 539 rtm->rtm_flags, ipif, 540 src_ipif, &ire, CONNP_TO_WQ(connp), 541 ioc_mp, ip_rts_request_retry); 542 break; 543 } 544 /* 545 * The RTF_SETSRC flag is present, check that 546 * the supplied src address is not the loopback 547 * address. This would produce martian packets. 548 */ 549 if (src_addr == htonl(INADDR_LOOPBACK)) { 550 error = EINVAL; 551 goto done; 552 } 553 /* 554 * Also check that the supplied address is a 555 * valid, local one. 556 */ 557 tmp_ipif = ipif_lookup_addr(src_addr, NULL, 558 ALL_ZONES, CONNP_TO_WQ(connp), ioc_mp, 559 ip_rts_request_retry, &error); 560 if (tmp_ipif == NULL) { 561 if (error != EINPROGRESS) 562 error = EADDRNOTAVAIL; 563 goto done; 564 } 565 if (!(tmp_ipif->ipif_flags & IPIF_UP) || 566 (tmp_ipif->ipif_flags & 567 (IPIF_NOLOCAL | IPIF_ANYCAST))) { 568 error = EINVAL; 569 goto done; 570 } 571 } else { 572 /* 573 * The RTF_SETSRC modifier must be associated 574 * to a non-null source address. 575 */ 576 if (rtm->rtm_flags & RTF_SETSRC) { 577 error = EINVAL; 578 goto done; 579 } 580 } 581 582 error = ip_rt_add(dst_addr, net_mask, gw_addr, src_addr, 583 rtm->rtm_flags, ipif, src_ipif, &ire, B_FALSE, 584 CONNP_TO_WQ(connp), ioc_mp, ip_rts_request_retry, 585 rtsap); 586 if (ipif != NULL) 587 ASSERT(!MUTEX_HELD(&ipif->ipif_ill->ill_lock)); 588 break; 589 case AF_INET6: 590 if (!IN6_IS_ADDR_UNSPECIFIED(&src_addr_v6)) { 591 /* 592 * If there is a source address, but 593 * no RTF_SETSRC modifier, reject, as 594 * MobileIP IPv6 reverse tunnels are 595 * not supported. 596 */ 597 if ((rtm->rtm_flags & RTF_SETSRC) == 0) { 598 error = EINVAL; 599 goto done; 600 } 601 /* 602 * The RTF_SETSRC flag is present, check that 603 * the supplied src address is not the loopback 604 * address. This would produce martian packets. 605 */ 606 if (IN6_IS_ADDR_LOOPBACK(&src_addr_v6)) { 607 error = EINVAL; 608 goto done; 609 } 610 /* 611 * Also check that the supplied address is a 612 * valid, local one. 613 */ 614 tmp_ipif = ipif_lookup_addr_v6(&src_addr_v6, 615 NULL, ALL_ZONES, CONNP_TO_WQ(connp), ioc_mp, 616 ip_rts_request_retry, &error); 617 if (tmp_ipif == NULL) { 618 if (error != EINPROGRESS) 619 error = EADDRNOTAVAIL; 620 goto done; 621 } 622 623 if (!(tmp_ipif->ipif_flags & IPIF_UP) || 624 (tmp_ipif->ipif_flags & 625 (IPIF_NOLOCAL | IPIF_ANYCAST))) { 626 error = EINVAL; 627 goto done; 628 } 629 630 error = ip_rt_add_v6(&dst_addr_v6, &net_mask_v6, 631 &gw_addr_v6, &src_addr_v6, rtm->rtm_flags, 632 ipif, &ire, CONNP_TO_WQ(connp), ioc_mp, 633 ip_rts_request_retry, rtsap); 634 break; 635 } 636 /* 637 * The RTF_SETSRC modifier must be associated 638 * to a non-null source address. 639 */ 640 if (rtm->rtm_flags & RTF_SETSRC) { 641 error = EINVAL; 642 goto done; 643 } 644 error = ip_rt_add_v6(&dst_addr_v6, &net_mask_v6, 645 &gw_addr_v6, NULL, rtm->rtm_flags, 646 ipif, &ire, CONNP_TO_WQ(connp), ioc_mp, 647 ip_rts_request_retry, rtsap); 648 if (ipif != NULL) 649 ASSERT(!MUTEX_HELD(&ipif->ipif_ill->ill_lock)); 650 break; 651 } 652 if (error != 0) 653 goto done; 654 ASSERT(ire != NULL); 655 rts_setmetrics(ire, rtm->rtm_inits, &rtm->rtm_rmx); 656 break; 657 case RTM_DELETE: 658 /* if we are deleting a route, gateway is a must */ 659 if ((found_addrs & RTA_GATEWAY) == 0) { 660 error = EINVAL; 661 goto done; 662 } 663 /* 664 * The RTF_SETSRC modifier does not make sense 665 * when deleting a route. 666 */ 667 if (rtm->rtm_flags & RTF_SETSRC) { 668 error = EINVAL; 669 goto done; 670 } 671 672 switch (af) { 673 case AF_INET: 674 /* 675 * If there is a source address, delete 676 * a MobileIP reverse tunnel. 677 */ 678 if (src_addr != INADDR_ANY) { 679 error = ip_mrtun_rt_delete(src_addr, 680 src_ipif); 681 break; 682 } 683 error = ip_rt_delete(dst_addr, net_mask, gw_addr, 684 found_addrs, rtm->rtm_flags, ipif, src_ipif, 685 B_FALSE, CONNP_TO_WQ(connp), ioc_mp, 686 ip_rts_request_retry); 687 break; 688 case AF_INET6: 689 error = ip_rt_delete_v6(&dst_addr_v6, &net_mask_v6, 690 &gw_addr_v6, found_addrs, rtm->rtm_flags, ipif, 691 CONNP_TO_WQ(connp), ioc_mp, ip_rts_request_retry); 692 break; 693 } 694 break; 695 case RTM_GET: 696 case RTM_CHANGE: 697 /* 698 * In the case of RTM_GET, the forwarding table should be 699 * searched recursively with default being matched if the 700 * specific route doesn't exist. Also, if a gateway was 701 * specified then the gateway address must also be matched. 702 * 703 * In the case of RTM_CHANGE, the gateway address (if supplied) 704 * is the new gateway address so matching on the gateway address 705 * is not done. This can lead to ambiguity when looking up the 706 * route to change as usually only the destination (and netmask, 707 * if supplied) is used for the lookup. However if a RTA_IFP 708 * sockaddr is also supplied, it can disambiguate which route to 709 * change provided the ambigous routes are tied to distinct 710 * ill's (or interface indices). If the routes are not tied to 711 * any particular interfaces (for example, with traditional 712 * gateway routes), then a RTA_IFP sockaddr will be of no use as 713 * it won't match any such routes. 714 * RTA_SRC is not supported for RTM_GET and RTM_CHANGE, 715 * except when RTM_CHANGE is combined to RTF_SETSRC. 716 */ 717 if (((found_addrs & RTA_SRC) != 0) && 718 ((rtm->rtm_type == RTM_GET) || 719 !(rtm->rtm_flags & RTF_SETSRC))) { 720 error = EOPNOTSUPP; 721 goto done; 722 } 723 724 if (rtm->rtm_type == RTM_GET) { 725 match_flags |= 726 (MATCH_IRE_DEFAULT | MATCH_IRE_RECURSIVE | 727 MATCH_IRE_SECATTR); 728 match_flags_local |= MATCH_IRE_SECATTR; 729 if ((found_addrs & RTA_GATEWAY) != 0) 730 match_flags |= MATCH_IRE_GW; 731 if (rtsap != NULL) { 732 if (rtsa_validate(rtsap) != 0) { 733 error = EINVAL; 734 goto done; 735 } 736 if (crgetzoneid(ioc_cr) != GLOBAL_ZONEID && 737 (tsl->tsl_doi != rtsap->rtsa_doi || 738 !bldominates(&tsl->tsl_label, 739 &rtsap->rtsa_slrange.lower_bound))) { 740 error = EPERM; 741 goto done; 742 } 743 tsl = labelalloc( 744 &rtsap->rtsa_slrange.lower_bound, 745 rtsap->rtsa_doi, KM_NOSLEEP); 746 } 747 } 748 if (rtm->rtm_type == RTM_CHANGE) { 749 if ((found_addrs & RTA_GATEWAY) && 750 (rtm->rtm_flags & RTF_SETSRC)) { 751 /* 752 * Do not want to change the gateway, 753 * but rather the source address. 754 */ 755 match_flags |= MATCH_IRE_GW; 756 } 757 } 758 759 /* 760 * If the netmask is all ones (either as supplied or as derived 761 * above), then first check for an IRE_LOOPBACK or 762 * IRE_LOCAL entry. 763 * 764 * If we didn't check for or find an IRE_LOOPBACK or IRE_LOCAL 765 * entry, then look in the forwarding table. 766 */ 767 switch (af) { 768 case AF_INET: 769 if (net_mask == IP_HOST_MASK) { 770 ire = ire_ctable_lookup(dst_addr, gw_addr, 771 IRE_LOCAL | IRE_LOOPBACK, NULL, ALL_ZONES, 772 tsl, match_flags_local); 773 } 774 if (ire == NULL) { 775 ire = ire_ftable_lookup(dst_addr, net_mask, 776 gw_addr, 0, ipif, &sire, ALL_ZONES, 0, 777 tsl, match_flags); 778 } 779 break; 780 case AF_INET6: 781 if (IN6_ARE_ADDR_EQUAL(&net_mask_v6, &ipv6_all_ones)) { 782 ire = ire_ctable_lookup_v6(&dst_addr_v6, 783 &gw_addr_v6, IRE_LOCAL | IRE_LOOPBACK, NULL, 784 ALL_ZONES, tsl, match_flags_local); 785 } 786 if (ire == NULL) { 787 ire = ire_ftable_lookup_v6(&dst_addr_v6, 788 &net_mask_v6, &gw_addr_v6, 0, ipif, &sire, 789 ALL_ZONES, 0, tsl, match_flags); 790 } 791 break; 792 } 793 if (tsl != NULL && tsl != crgetlabel(ioc_cr)) 794 label_rele(tsl); 795 796 if (ire == NULL) { 797 error = ESRCH; 798 goto done; 799 } 800 /* we know the IRE before we come here */ 801 switch (rtm->rtm_type) { 802 case RTM_GET: 803 mp1 = rts_rtmget(mp, ire, sire, af); 804 if (mp1 == NULL) { 805 error = ENOBUFS; 806 goto done; 807 } 808 freemsg(mp); 809 mp = mp1; 810 rtm = (rt_msghdr_t *)mp->b_rptr; 811 break; 812 case RTM_CHANGE: 813 /* 814 * Do not allow to the multirouting state of a route 815 * to be changed. This aims to prevent undesirable 816 * stages where both multirt and non-multirt routes 817 * for the same destination are declared. 818 */ 819 if ((ire->ire_flags & RTF_MULTIRT) != 820 (rtm->rtm_flags & RTF_MULTIRT)) { 821 error = EINVAL; 822 goto done; 823 } 824 /* 825 * Note that we do not need to do 826 * ire_flush_cache_*(IRE_FLUSH_ADD) as a change 827 * in metrics or gateway will not affect existing 828 * routes since it does not create a more specific 829 * route. 830 */ 831 switch (af) { 832 case AF_INET: 833 ire_flush_cache_v4(ire, IRE_FLUSH_DELETE); 834 if ((found_addrs & RTA_GATEWAY) != 0 && 835 (ire->ire_gateway_addr != gw_addr)) { 836 ire->ire_gateway_addr = gw_addr; 837 } 838 839 if (rtsap != NULL) { 840 ga.ga_af = AF_INET; 841 IN6_IPADDR_TO_V4MAPPED( 842 ire->ire_gateway_addr, &ga.ga_addr); 843 844 gcgrp = gcgrp_lookup(&ga, B_TRUE); 845 if (gcgrp == NULL) { 846 error = ENOMEM; 847 goto done; 848 } 849 } 850 851 if ((found_addrs & RTA_SRC) != 0 && 852 (rtm->rtm_flags & RTF_SETSRC) != 0 && 853 (ire->ire_src_addr != src_addr)) { 854 855 if (src_addr != INADDR_ANY) { 856 /* 857 * The RTF_SETSRC flag is 858 * present, check that the 859 * supplied src address is not 860 * the loopback address. This 861 * would produce martian 862 * packets. 863 */ 864 if (src_addr == 865 htonl(INADDR_LOOPBACK)) { 866 error = EINVAL; 867 goto done; 868 } 869 /* 870 * Also check that the the 871 * supplied addr is a valid 872 * local address. 873 */ 874 tmp_ipif = ipif_lookup_addr( 875 src_addr, NULL, ALL_ZONES, 876 CONNP_TO_WQ(connp), ioc_mp, 877 ip_rts_request_retry, 878 &error); 879 if (tmp_ipif == NULL) { 880 error = (error == 881 EINPROGRESS) ? 882 error : 883 EADDRNOTAVAIL; 884 goto done; 885 } 886 887 if (!(tmp_ipif->ipif_flags & 888 IPIF_UP) || 889 (tmp_ipif->ipif_flags & 890 (IPIF_NOLOCAL | 891 IPIF_ANYCAST))) { 892 error = EINVAL; 893 goto done; 894 } 895 ire->ire_flags |= RTF_SETSRC; 896 } else { 897 ire->ire_flags &= ~RTF_SETSRC; 898 } 899 ire->ire_src_addr = src_addr; 900 } 901 break; 902 case AF_INET6: 903 ire_flush_cache_v6(ire, IRE_FLUSH_DELETE); 904 mutex_enter(&ire->ire_lock); 905 if ((found_addrs & RTA_GATEWAY) != 0 && 906 !IN6_ARE_ADDR_EQUAL( 907 &ire->ire_gateway_addr_v6, &gw_addr_v6)) { 908 ire->ire_gateway_addr_v6 = gw_addr_v6; 909 } 910 911 if (rtsap != NULL) { 912 ga.ga_af = AF_INET6; 913 ga.ga_addr = ire->ire_gateway_addr_v6; 914 915 gcgrp = gcgrp_lookup(&ga, B_TRUE); 916 if (gcgrp == NULL) { 917 error = ENOMEM; 918 goto done; 919 } 920 } 921 922 if ((found_addrs & RTA_SRC) != 0 && 923 (rtm->rtm_flags & RTF_SETSRC) != 0 && 924 !IN6_ARE_ADDR_EQUAL( 925 &ire->ire_src_addr_v6, &src_addr_v6)) { 926 927 if (!IN6_IS_ADDR_UNSPECIFIED( 928 &src_addr_v6)) { 929 /* 930 * The RTF_SETSRC flag is 931 * present, check that the 932 * supplied src address is not 933 * the loopback address. This 934 * would produce martian 935 * packets. 936 */ 937 if (IN6_IS_ADDR_LOOPBACK( 938 &src_addr_v6)) { 939 mutex_exit( 940 &ire->ire_lock); 941 error = EINVAL; 942 goto done; 943 } 944 /* 945 * Also check that the the 946 * supplied addr is a valid 947 * local address. 948 */ 949 tmp_ipif = ipif_lookup_addr_v6( 950 &src_addr_v6, NULL, 951 ALL_ZONES, 952 CONNP_TO_WQ(connp), ioc_mp, 953 ip_rts_request_retry, 954 &error); 955 if (tmp_ipif == NULL) { 956 mutex_exit( 957 &ire->ire_lock); 958 error = (error == 959 EINPROGRESS) ? 960 error : 961 EADDRNOTAVAIL; 962 goto done; 963 } 964 if (!(tmp_ipif->ipif_flags & 965 IPIF_UP) || 966 (tmp_ipif->ipif_flags & 967 (IPIF_NOLOCAL | 968 IPIF_ANYCAST))) { 969 mutex_exit( 970 &ire->ire_lock); 971 error = EINVAL; 972 goto done; 973 } 974 ire->ire_flags |= RTF_SETSRC; 975 } else { 976 ire->ire_flags &= ~RTF_SETSRC; 977 } 978 ire->ire_src_addr_v6 = src_addr_v6; 979 } 980 mutex_exit(&ire->ire_lock); 981 break; 982 } 983 984 if (rtsap != NULL) { 985 in_addr_t ga_addr4; 986 987 ASSERT(gcgrp != NULL); 988 989 /* 990 * Create and add the security attribute to 991 * prefix IRE; it will add a reference to the 992 * group upon allocating a new entry. If it 993 * finds an already-existing entry for the 994 * security attribute, it simply returns it 995 * and no new group reference is made. 996 */ 997 gc = gc_create(rtsap, gcgrp, &gcgrp_xtraref); 998 if (gc == NULL || 999 (error = tsol_ire_init_gwattr(ire, 1000 ire->ire_ipversion, gc, NULL)) != 0) { 1001 if (gc != NULL) { 1002 GC_REFRELE(gc); 1003 } else { 1004 /* gc_create failed */ 1005 error = ENOMEM; 1006 } 1007 goto done; 1008 } 1009 1010 /* 1011 * Now delete any existing gateway IRE caches 1012 * as well as all caches using the gateway, 1013 * and allow them to be created on demand 1014 * through ip_newroute{_v6}. 1015 */ 1016 IN6_V4MAPPED_TO_IPADDR(&ga.ga_addr, ga_addr4); 1017 if (af == AF_INET) { 1018 ire_clookup_delete_cache_gw( 1019 ga_addr4, ALL_ZONES); 1020 } else { 1021 ire_clookup_delete_cache_gw_v6( 1022 &ga.ga_addr, ALL_ZONES); 1023 } 1024 } 1025 rts_setmetrics(ire, rtm->rtm_inits, &rtm->rtm_rmx); 1026 break; 1027 } 1028 break; 1029 default: 1030 error = EOPNOTSUPP; 1031 break; 1032 } 1033 done: 1034 if (ire != NULL) 1035 ire_refrele(ire); 1036 if (sire != NULL) 1037 ire_refrele(sire); 1038 if (ipif != NULL) 1039 ipif_refrele(ipif); 1040 if (src_ipif != NULL) 1041 ipif_refrele(src_ipif); 1042 if (tmp_ipif != NULL) 1043 ipif_refrele(tmp_ipif); 1044 1045 if (gcgrp_xtraref) 1046 GCGRP_REFRELE(gcgrp); 1047 1048 if (error == EINPROGRESS) 1049 return (error); 1050 if (rtm != NULL) { 1051 ASSERT(mp->b_wptr <= mp->b_datap->db_lim); 1052 if (error != 0) { 1053 rtm->rtm_errno = error; 1054 /* Send error ACK */ 1055 ip1dbg(("ip_rts_request: error %d\n", error)); 1056 } else { 1057 rtm->rtm_flags |= RTF_DONE; 1058 /* OK ACK already set up by caller except this */ 1059 ip2dbg(("ip_rts_request: OK ACK\n")); 1060 } 1061 rts_queue_input(mp, q, af); 1062 } 1063 iocp->ioc_error = error; 1064 ioc_mp->b_datap->db_type = M_IOCACK; 1065 if (iocp->ioc_error != 0) 1066 iocp->ioc_count = 0; 1067 qreply(q, ioc_mp); 1068 /* conn was refheld in ip_wput_ioctl. */ 1069 CONN_OPER_PENDING_DONE(connp); 1070 1071 return (error); 1072 } 1073 1074 /* 1075 * Build a reply to the RTM_GET request contained in the given message block 1076 * using the retrieved IRE of the destination address, the parent IRE (if it 1077 * exists) and the address family. 1078 * 1079 * Returns a pointer to a message block containing the reply if successful, 1080 * otherwise NULL is returned. 1081 */ 1082 static mblk_t * 1083 rts_rtmget(mblk_t *mp, ire_t *ire, ire_t *sire, sa_family_t af) 1084 { 1085 rt_msghdr_t *rtm; 1086 rt_msghdr_t *new_rtm; 1087 mblk_t *new_mp; 1088 int rtm_addrs; 1089 int rtm_flags; 1090 in6_addr_t gw_addr_v6; 1091 tsol_ire_gw_secattr_t *attrp = NULL; 1092 tsol_gc_t *gc = NULL; 1093 tsol_gcgrp_t *gcgrp = NULL; 1094 int sacnt = 0; 1095 1096 ASSERT(ire->ire_ipif != NULL); 1097 rtm = (rt_msghdr_t *)mp->b_rptr; 1098 1099 if (sire != NULL && sire->ire_gw_secattr != NULL) 1100 attrp = sire->ire_gw_secattr; 1101 else if (ire->ire_gw_secattr != NULL) 1102 attrp = ire->ire_gw_secattr; 1103 1104 if (attrp != NULL) { 1105 mutex_enter(&attrp->igsa_lock); 1106 if ((gc = attrp->igsa_gc) != NULL) { 1107 gcgrp = gc->gc_grp; 1108 ASSERT(gcgrp != NULL); 1109 rw_enter(&gcgrp->gcgrp_rwlock, RW_READER); 1110 sacnt = 1; 1111 } else if ((gcgrp = attrp->igsa_gcgrp) != NULL) { 1112 rw_enter(&gcgrp->gcgrp_rwlock, RW_READER); 1113 gc = gcgrp->gcgrp_head; 1114 sacnt = gcgrp->gcgrp_count; 1115 } 1116 mutex_exit(&attrp->igsa_lock); 1117 1118 /* do nothing if there's no gc to report */ 1119 if (gc == NULL) { 1120 ASSERT(sacnt == 0); 1121 if (gcgrp != NULL) { 1122 /* we might as well drop the lock now */ 1123 rw_exit(&gcgrp->gcgrp_rwlock); 1124 gcgrp = NULL; 1125 } 1126 attrp = NULL; 1127 } 1128 1129 ASSERT(gc == NULL || (gcgrp != NULL && 1130 RW_LOCK_HELD(&gcgrp->gcgrp_rwlock))); 1131 } 1132 ASSERT(sacnt == 0 || gc != NULL); 1133 1134 /* 1135 * Always return RTA_DST, RTA_GATEWAY and RTA_NETMASK. 1136 * 1137 * The 4.4BSD-Lite2 code (net/rtsock.c) returns both 1138 * RTA_IFP and RTA_IFA if either is defined, and also 1139 * returns RTA_BRD if the appropriate interface is 1140 * point-to-point. 1141 */ 1142 rtm_addrs = (RTA_DST | RTA_GATEWAY | RTA_NETMASK); 1143 if (rtm->rtm_addrs & (RTA_IFP | RTA_IFA)) { 1144 rtm_addrs |= (RTA_IFP | RTA_IFA); 1145 if (ire->ire_ipif->ipif_flags & IPIF_POINTOPOINT) 1146 rtm_addrs |= RTA_BRD; 1147 } 1148 1149 new_mp = rts_alloc_msg(RTM_GET, rtm_addrs, af, sacnt); 1150 if (new_mp == NULL) { 1151 if (gcgrp != NULL) 1152 rw_exit(&gcgrp->gcgrp_rwlock); 1153 return (NULL); 1154 } 1155 1156 /* 1157 * We set the destination address, gateway address, 1158 * netmask and flags in the RTM_GET response depending 1159 * on whether we found a parent IRE or not. 1160 * In particular, if we did find a parent IRE during the 1161 * recursive search, use that IRE's gateway address. 1162 * Otherwise, we use the IRE's source address for the 1163 * gateway address. 1164 */ 1165 ASSERT(af == AF_INET || af == AF_INET6); 1166 switch (af) { 1167 case AF_INET: 1168 if (sire == NULL) { 1169 rtm_flags = ire->ire_flags; 1170 rts_fill_msg(RTM_GET, rtm_addrs, ire->ire_addr, 1171 ire->ire_mask, ire->ire_src_addr, ire->ire_src_addr, 1172 ire->ire_ipif->ipif_pp_dst_addr, 0, ire->ire_ipif, 1173 new_mp, sacnt, gc); 1174 } else { 1175 if (sire->ire_flags & RTF_SETSRC) 1176 rtm_addrs |= RTA_SRC; 1177 1178 rtm_flags = sire->ire_flags; 1179 rts_fill_msg(RTM_GET, rtm_addrs, sire->ire_addr, 1180 sire->ire_mask, sire->ire_gateway_addr, 1181 (sire->ire_flags & RTF_SETSRC) ? 1182 sire->ire_src_addr : ire->ire_src_addr, 1183 ire->ire_ipif->ipif_pp_dst_addr, 1184 0, ire->ire_ipif, new_mp, sacnt, gc); 1185 } 1186 break; 1187 case AF_INET6: 1188 if (sire == NULL) { 1189 rtm_flags = ire->ire_flags; 1190 rts_fill_msg_v6(RTM_GET, rtm_addrs, &ire->ire_addr_v6, 1191 &ire->ire_mask_v6, &ire->ire_src_addr_v6, 1192 &ire->ire_src_addr_v6, 1193 &ire->ire_ipif->ipif_v6pp_dst_addr, 1194 &ipv6_all_zeros, ire->ire_ipif, new_mp, 1195 sacnt, gc); 1196 } else { 1197 if (sire->ire_flags & RTF_SETSRC) 1198 rtm_addrs |= RTA_SRC; 1199 1200 rtm_flags = sire->ire_flags; 1201 mutex_enter(&sire->ire_lock); 1202 gw_addr_v6 = sire->ire_gateway_addr_v6; 1203 mutex_exit(&sire->ire_lock); 1204 rts_fill_msg_v6(RTM_GET, rtm_addrs, &sire->ire_addr_v6, 1205 &sire->ire_mask_v6, &gw_addr_v6, 1206 (sire->ire_flags & RTF_SETSRC) ? 1207 &sire->ire_src_addr_v6 : &ire->ire_src_addr_v6, 1208 &ire->ire_ipif->ipif_v6pp_dst_addr, &ipv6_all_zeros, 1209 ire->ire_ipif, new_mp, sacnt, gc); 1210 } 1211 break; 1212 } 1213 1214 if (gcgrp != NULL) 1215 rw_exit(&gcgrp->gcgrp_rwlock); 1216 1217 new_rtm = (rt_msghdr_t *)new_mp->b_rptr; 1218 1219 /* 1220 * The rtm_msglen, rtm_version and rtm_type fields in 1221 * RTM_GET response are filled in by rts_fill_msg. 1222 * 1223 * rtm_addrs and rtm_flags are filled in based on what 1224 * was requested and the state of the IREs looked up 1225 * above. 1226 * 1227 * rtm_inits and rtm_rmx are filled in with metrics 1228 * based on whether a parent IRE was found or not. 1229 * 1230 * TODO: rtm_index and rtm_use should probably be 1231 * filled in with something resonable here and not just 1232 * copied from the request. 1233 */ 1234 new_rtm->rtm_index = rtm->rtm_index; 1235 new_rtm->rtm_pid = rtm->rtm_pid; 1236 new_rtm->rtm_seq = rtm->rtm_seq; 1237 new_rtm->rtm_use = rtm->rtm_use; 1238 new_rtm->rtm_addrs = rtm_addrs; 1239 new_rtm->rtm_flags = rtm_flags; 1240 if (sire == NULL) 1241 new_rtm->rtm_inits = rts_getmetrics(ire, &new_rtm->rtm_rmx); 1242 else 1243 new_rtm->rtm_inits = rts_getmetrics(sire, &new_rtm->rtm_rmx); 1244 1245 return (new_mp); 1246 } 1247 1248 /* 1249 * Fill the given if_data_t with interface statistics. 1250 */ 1251 static void 1252 rts_getifdata(if_data_t *if_data, const ipif_t *ipif) 1253 { 1254 if_data->ifi_type = ipif->ipif_type; /* ethernet, tokenring, etc */ 1255 if_data->ifi_addrlen = 0; /* media address length */ 1256 if_data->ifi_hdrlen = 0; /* media header length */ 1257 if_data->ifi_mtu = ipif->ipif_mtu; /* maximum transmission unit */ 1258 if_data->ifi_metric = ipif->ipif_metric; /* metric (external only) */ 1259 if_data->ifi_baudrate = 0; /* linespeed */ 1260 1261 if_data->ifi_ipackets = 0; /* packets received on if */ 1262 if_data->ifi_ierrors = 0; /* input errors on interface */ 1263 if_data->ifi_opackets = 0; /* packets sent on interface */ 1264 if_data->ifi_oerrors = 0; /* output errors on if */ 1265 if_data->ifi_collisions = 0; /* collisions on csma if */ 1266 if_data->ifi_ibytes = 0; /* total number received */ 1267 if_data->ifi_obytes = 0; /* total number sent */ 1268 if_data->ifi_imcasts = 0; /* multicast packets received */ 1269 if_data->ifi_omcasts = 0; /* multicast packets sent */ 1270 if_data->ifi_iqdrops = 0; /* dropped on input */ 1271 if_data->ifi_noproto = 0; /* destined for unsupported */ 1272 /* protocol. */ 1273 } 1274 1275 /* 1276 * Set the metrics on a forwarding table route. 1277 */ 1278 static void 1279 rts_setmetrics(ire_t *ire, uint_t which, rt_metrics_t *metrics) 1280 { 1281 clock_t rtt; 1282 clock_t rtt_sd; 1283 ipif_t *ipif; 1284 ifrt_t *ifrt; 1285 mblk_t *mp; 1286 in6_addr_t gw_addr_v6; 1287 1288 /* 1289 * Bypass obtaining the lock and searching ipif_saved_ire_mp in the 1290 * common case of no metrics. 1291 */ 1292 if (which == 0) 1293 return; 1294 ire->ire_uinfo.iulp_set = B_TRUE; 1295 1296 /* 1297 * iulp_rtt and iulp_rtt_sd are in milliseconds, but 4.4BSD-Lite2's 1298 * <net/route.h> says: rmx_rtt and rmx_rttvar are stored as 1299 * microseconds. 1300 */ 1301 if (which & RTV_RTT) 1302 rtt = metrics->rmx_rtt / 1000; 1303 if (which & RTV_RTTVAR) 1304 rtt_sd = metrics->rmx_rttvar / 1000; 1305 1306 /* 1307 * Update the metrics in the IRE itself. 1308 */ 1309 mutex_enter(&ire->ire_lock); 1310 if (which & RTV_MTU) 1311 ire->ire_max_frag = metrics->rmx_mtu; 1312 if (which & RTV_RTT) 1313 ire->ire_uinfo.iulp_rtt = rtt; 1314 if (which & RTV_SSTHRESH) 1315 ire->ire_uinfo.iulp_ssthresh = metrics->rmx_ssthresh; 1316 if (which & RTV_RTTVAR) 1317 ire->ire_uinfo.iulp_rtt_sd = rtt_sd; 1318 if (which & RTV_SPIPE) 1319 ire->ire_uinfo.iulp_spipe = metrics->rmx_sendpipe; 1320 if (which & RTV_RPIPE) 1321 ire->ire_uinfo.iulp_rpipe = metrics->rmx_recvpipe; 1322 mutex_exit(&ire->ire_lock); 1323 1324 /* 1325 * Search through the ifrt_t chain hanging off the IPIF in order to 1326 * reflect the metric change there. 1327 */ 1328 ipif = ire->ire_ipif; 1329 if (ipif == NULL) 1330 return; 1331 ASSERT((ipif->ipif_isv6 && ire->ire_ipversion == IPV6_VERSION) || 1332 ((!ipif->ipif_isv6 && ire->ire_ipversion == IPV4_VERSION))); 1333 if (ipif->ipif_isv6) { 1334 mutex_enter(&ire->ire_lock); 1335 gw_addr_v6 = ire->ire_gateway_addr_v6; 1336 mutex_exit(&ire->ire_lock); 1337 } 1338 mutex_enter(&ipif->ipif_saved_ire_lock); 1339 for (mp = ipif->ipif_saved_ire_mp; mp != NULL; mp = mp->b_cont) { 1340 /* 1341 * On a given ipif, the triple of address, gateway and mask is 1342 * unique for each saved IRE (in the case of ordinary interface 1343 * routes, the gateway address is all-zeroes). 1344 */ 1345 ifrt = (ifrt_t *)mp->b_rptr; 1346 if (ipif->ipif_isv6) { 1347 if (!IN6_ARE_ADDR_EQUAL(&ifrt->ifrt_v6addr, 1348 &ire->ire_addr_v6) || 1349 !IN6_ARE_ADDR_EQUAL(&ifrt->ifrt_v6gateway_addr, 1350 &gw_addr_v6) || 1351 !IN6_ARE_ADDR_EQUAL(&ifrt->ifrt_v6mask, 1352 &ire->ire_mask_v6)) 1353 continue; 1354 } else { 1355 if (ifrt->ifrt_addr != ire->ire_addr || 1356 ifrt->ifrt_gateway_addr != ire->ire_gateway_addr || 1357 ifrt->ifrt_mask != ire->ire_mask) 1358 continue; 1359 } 1360 if (which & RTV_MTU) 1361 ifrt->ifrt_max_frag = metrics->rmx_mtu; 1362 if (which & RTV_RTT) 1363 ifrt->ifrt_iulp_info.iulp_rtt = rtt; 1364 if (which & RTV_SSTHRESH) { 1365 ifrt->ifrt_iulp_info.iulp_ssthresh = 1366 metrics->rmx_ssthresh; 1367 } 1368 if (which & RTV_RTTVAR) 1369 ifrt->ifrt_iulp_info.iulp_rtt_sd = metrics->rmx_rttvar; 1370 if (which & RTV_SPIPE) 1371 ifrt->ifrt_iulp_info.iulp_spipe = metrics->rmx_sendpipe; 1372 if (which & RTV_RPIPE) 1373 ifrt->ifrt_iulp_info.iulp_rpipe = metrics->rmx_recvpipe; 1374 break; 1375 } 1376 mutex_exit(&ipif->ipif_saved_ire_lock); 1377 } 1378 1379 /* 1380 * Get the metrics from a forwarding table route. 1381 */ 1382 static int 1383 rts_getmetrics(ire_t *ire, rt_metrics_t *metrics) 1384 { 1385 int metrics_set = 0; 1386 1387 bzero(metrics, sizeof (rt_metrics_t)); 1388 /* 1389 * iulp_rtt and iulp_rtt_sd are in milliseconds, but 4.4BSD-Lite2's 1390 * <net/route.h> says: rmx_rtt and rmx_rttvar are stored as 1391 * microseconds. 1392 */ 1393 metrics->rmx_rtt = ire->ire_uinfo.iulp_rtt * 1000; 1394 metrics_set |= RTV_RTT; 1395 metrics->rmx_mtu = ire->ire_max_frag; 1396 metrics_set |= RTV_MTU; 1397 metrics->rmx_ssthresh = ire->ire_uinfo.iulp_ssthresh; 1398 metrics_set |= RTV_SSTHRESH; 1399 metrics->rmx_rttvar = ire->ire_uinfo.iulp_rtt_sd * 1000; 1400 metrics_set |= RTV_RTTVAR; 1401 metrics->rmx_sendpipe = ire->ire_uinfo.iulp_spipe; 1402 metrics_set |= RTV_SPIPE; 1403 metrics->rmx_recvpipe = ire->ire_uinfo.iulp_rpipe; 1404 metrics_set |= RTV_RPIPE; 1405 return (metrics_set); 1406 } 1407 1408 /* 1409 * Takes a pointer to a routing message and extracts necessary info by looking 1410 * at the rtm->rtm_addrs bits and store the requested sockaddrs in the pointers 1411 * passed (all of which must be valid). 1412 * 1413 * The bitmask of sockaddrs actually found in the message is returned, or zero 1414 * is returned in the case of an error. 1415 */ 1416 static int 1417 rts_getaddrs(rt_msghdr_t *rtm, in6_addr_t *dst_addrp, in6_addr_t *gw_addrp, 1418 in6_addr_t *net_maskp, in6_addr_t *authorp, in6_addr_t *if_addrp, 1419 in6_addr_t *in_src_addrp, ushort_t *indexp, ushort_t *src_indexp, 1420 sa_family_t *afp, tsol_rtsecattr_t *rtsecattr, int *error) 1421 { 1422 struct sockaddr *sa; 1423 int i; 1424 int addr_bits; 1425 int length; 1426 int found_addrs = 0; 1427 caddr_t cp; 1428 size_t size; 1429 struct sockaddr_dl *sdl; 1430 1431 *dst_addrp = ipv6_all_zeros; 1432 *gw_addrp = ipv6_all_zeros; 1433 *net_maskp = ipv6_all_zeros; 1434 *authorp = ipv6_all_zeros; 1435 *if_addrp = ipv6_all_zeros; 1436 *in_src_addrp = ipv6_all_zeros; 1437 *indexp = 0; 1438 *src_indexp = 0; 1439 *afp = AF_UNSPEC; 1440 rtsecattr->rtsa_cnt = 0; 1441 *error = 0; 1442 1443 /* 1444 * At present we handle only RTA_DST, RTA_GATEWAY, RTA_NETMASK, RTA_IFP, 1445 * RTA_IFA and RTA_AUTHOR. The rest will be added as we need them. 1446 */ 1447 cp = (caddr_t)&rtm[1]; 1448 length = rtm->rtm_msglen; 1449 for (i = 0; (i < RTA_NUMBITS) && ((cp - (caddr_t)rtm) < length); i++) { 1450 /* 1451 * The address family we are working with starts out as 1452 * AF_UNSPEC, but is set to the one specified with the 1453 * destination address. 1454 * 1455 * If the "working" address family that has been set to 1456 * something other than AF_UNSPEC, then the address family of 1457 * subsequent sockaddrs must either be AF_UNSPEC (for 1458 * compatibility with older programs) or must be the same as our 1459 * "working" one. 1460 * 1461 * This code assumes that RTA_DST (1) comes first in the loop. 1462 */ 1463 sa = (struct sockaddr *)cp; 1464 addr_bits = (rtm->rtm_addrs & (1 << i)); 1465 if (addr_bits == 0) 1466 continue; 1467 switch (addr_bits) { 1468 case RTA_DST: 1469 size = rts_copyfromsockaddr(sa, dst_addrp); 1470 *afp = sa->sa_family; 1471 break; 1472 case RTA_GATEWAY: 1473 if (sa->sa_family != *afp && sa->sa_family != AF_UNSPEC) 1474 return (0); 1475 size = rts_copyfromsockaddr(sa, gw_addrp); 1476 break; 1477 case RTA_NETMASK: 1478 if (sa->sa_family != *afp && sa->sa_family != AF_UNSPEC) 1479 return (0); 1480 size = rts_copyfromsockaddr(sa, net_maskp); 1481 break; 1482 case RTA_IFP: 1483 if (sa->sa_family != AF_LINK && 1484 sa->sa_family != AF_UNSPEC) 1485 return (0); 1486 sdl = (struct sockaddr_dl *)cp; 1487 *indexp = sdl->sdl_index; 1488 size = sizeof (struct sockaddr_dl); 1489 break; 1490 case RTA_SRC: 1491 /* Source address of the incoming packet */ 1492 size = rts_copyfromsockaddr(sa, in_src_addrp); 1493 *afp = sa->sa_family; 1494 break; 1495 case RTA_SRCIFP: 1496 /* Return incoming interface index pointer */ 1497 if (sa->sa_family != AF_LINK && 1498 sa->sa_family != AF_UNSPEC) 1499 return (0); 1500 sdl = (struct sockaddr_dl *)cp; 1501 *src_indexp = sdl->sdl_index; 1502 size = sizeof (struct sockaddr_dl); 1503 break; 1504 case RTA_IFA: 1505 if (sa->sa_family != *afp && sa->sa_family != AF_UNSPEC) 1506 return (0); 1507 size = rts_copyfromsockaddr(sa, if_addrp); 1508 break; 1509 case RTA_AUTHOR: 1510 if (sa->sa_family != *afp && sa->sa_family != AF_UNSPEC) 1511 return (0); 1512 size = rts_copyfromsockaddr(sa, authorp); 1513 break; 1514 default: 1515 return (0); 1516 } 1517 if (size == 0) 1518 return (0); 1519 cp += size; 1520 found_addrs |= addr_bits; 1521 } 1522 1523 /* 1524 * Parse the routing message and look for any security- 1525 * related attributes for the route. For each valid 1526 * attribute, allocate/obtain the corresponding kernel 1527 * route security attributes. 1528 */ 1529 *error = tsol_rtsa_init(rtm, rtsecattr, cp); 1530 ASSERT(rtsecattr->rtsa_cnt <= TSOL_RTSA_REQUEST_MAX); 1531 1532 return (found_addrs); 1533 } 1534 1535 /* 1536 * Fills the message with the given info. 1537 */ 1538 static void 1539 rts_fill_msg(int type, int rtm_addrs, ipaddr_t dst, ipaddr_t mask, 1540 ipaddr_t gateway, ipaddr_t src_addr, ipaddr_t brd_addr, ipaddr_t author, 1541 const ipif_t *ipif, mblk_t *mp, uint_t sacnt, const tsol_gc_t *gc) 1542 { 1543 rt_msghdr_t *rtm; 1544 sin_t *sin; 1545 size_t data_size, header_size; 1546 uchar_t *cp; 1547 int i; 1548 1549 ASSERT(mp != NULL); 1550 ASSERT(sacnt == 0 || gc != NULL); 1551 /* 1552 * First find the type of the message 1553 * and its length. 1554 */ 1555 header_size = rts_header_msg_size(type); 1556 /* 1557 * Now find the size of the data 1558 * that follows the message header. 1559 */ 1560 data_size = rts_data_msg_size(rtm_addrs, AF_INET, sacnt); 1561 1562 rtm = (rt_msghdr_t *)mp->b_rptr; 1563 mp->b_wptr = &mp->b_rptr[header_size]; 1564 cp = mp->b_wptr; 1565 bzero(cp, data_size); 1566 for (i = 0; i < RTA_NUMBITS; i++) { 1567 sin = (sin_t *)cp; 1568 switch (rtm_addrs & (1 << i)) { 1569 case RTA_DST: 1570 sin->sin_addr.s_addr = dst; 1571 sin->sin_family = AF_INET; 1572 cp += sizeof (sin_t); 1573 break; 1574 case RTA_GATEWAY: 1575 sin->sin_addr.s_addr = gateway; 1576 sin->sin_family = AF_INET; 1577 cp += sizeof (sin_t); 1578 break; 1579 case RTA_NETMASK: 1580 sin->sin_addr.s_addr = mask; 1581 sin->sin_family = AF_INET; 1582 cp += sizeof (sin_t); 1583 break; 1584 case RTA_IFP: 1585 cp += ill_dls_info((struct sockaddr_dl *)cp, ipif); 1586 break; 1587 case RTA_SRCIFP: 1588 /* 1589 * RTA_SRCIFP is not yet supported 1590 * for RTM_GET and RTM_CHANGE 1591 */ 1592 break; 1593 case RTA_IFA: 1594 case RTA_SRC: 1595 sin->sin_addr.s_addr = src_addr; 1596 sin->sin_family = AF_INET; 1597 cp += sizeof (sin_t); 1598 break; 1599 case RTA_AUTHOR: 1600 sin->sin_addr.s_addr = author; 1601 sin->sin_family = AF_INET; 1602 cp += sizeof (sin_t); 1603 break; 1604 case RTA_BRD: 1605 /* 1606 * RTA_BRD is used typically to specify a point-to-point 1607 * destination address. 1608 */ 1609 sin->sin_addr.s_addr = brd_addr; 1610 sin->sin_family = AF_INET; 1611 cp += sizeof (sin_t); 1612 break; 1613 } 1614 } 1615 1616 if (gc != NULL) { 1617 rtm_ext_t *rtm_ext; 1618 struct rtsa_s *rp_dst; 1619 tsol_rtsecattr_t *rsap; 1620 int i; 1621 1622 ASSERT(gc->gc_grp != NULL); 1623 ASSERT(RW_LOCK_HELD(&gc->gc_grp->gcgrp_rwlock)); 1624 ASSERT(sacnt > 0); 1625 1626 rtm_ext = (rtm_ext_t *)cp; 1627 rtm_ext->rtmex_type = RTMEX_GATEWAY_SECATTR; 1628 rtm_ext->rtmex_len = TSOL_RTSECATTR_SIZE(sacnt); 1629 1630 rsap = (tsol_rtsecattr_t *)(rtm_ext + 1); 1631 rsap->rtsa_cnt = sacnt; 1632 rp_dst = rsap->rtsa_attr; 1633 1634 for (i = 0; i < sacnt; i++, gc = gc->gc_next, rp_dst++) { 1635 ASSERT(gc->gc_db != NULL); 1636 bcopy(&gc->gc_db->gcdb_attr, rp_dst, sizeof (*rp_dst)); 1637 } 1638 cp = (uchar_t *)rp_dst; 1639 } 1640 1641 mp->b_wptr = cp; 1642 mp->b_cont = NULL; 1643 /* 1644 * set the fields that are common to 1645 * to different messages. 1646 */ 1647 rtm->rtm_msglen = (short)(header_size + data_size); 1648 rtm->rtm_version = RTM_VERSION; 1649 rtm->rtm_type = (uchar_t)type; 1650 } 1651 1652 /* 1653 * Allocates and initializes a routing socket message. 1654 */ 1655 mblk_t * 1656 rts_alloc_msg(int type, int rtm_addrs, sa_family_t af, uint_t sacnt) 1657 { 1658 size_t length; 1659 mblk_t *mp; 1660 1661 length = RTS_MSG_SIZE(type, rtm_addrs, af, sacnt); 1662 mp = allocb(length, BPRI_MED); 1663 if (mp == NULL) 1664 return (mp); 1665 bzero(mp->b_rptr, length); 1666 return (mp); 1667 } 1668 1669 /* 1670 * Returns the size of the routing 1671 * socket message header size. 1672 */ 1673 size_t 1674 rts_header_msg_size(int type) 1675 { 1676 switch (type) { 1677 case RTM_DELADDR: 1678 case RTM_NEWADDR: 1679 return (sizeof (ifa_msghdr_t)); 1680 case RTM_IFINFO: 1681 return (sizeof (if_msghdr_t)); 1682 default: 1683 return (sizeof (rt_msghdr_t)); 1684 } 1685 } 1686 1687 /* 1688 * Returns the size of the message needed with the given rtm_addrs and family. 1689 * 1690 * It is assumed that all of the sockaddrs (with the exception of RTA_IFP) are 1691 * of the same family (currently either AF_INET or AF_INET6). 1692 */ 1693 size_t 1694 rts_data_msg_size(int rtm_addrs, sa_family_t af, uint_t sacnt) 1695 { 1696 int i; 1697 size_t length = 0; 1698 1699 for (i = 0; i < RTA_NUMBITS; i++) { 1700 switch (rtm_addrs & (1 << i)) { 1701 case RTA_IFP: 1702 length += sizeof (struct sockaddr_dl); 1703 break; 1704 case RTA_DST: 1705 case RTA_GATEWAY: 1706 case RTA_NETMASK: 1707 case RTA_SRC: 1708 case RTA_SRCIFP: 1709 case RTA_IFA: 1710 case RTA_AUTHOR: 1711 case RTA_BRD: 1712 ASSERT(af == AF_INET || af == AF_INET6); 1713 switch (af) { 1714 case AF_INET: 1715 length += sizeof (sin_t); 1716 break; 1717 case AF_INET6: 1718 length += sizeof (sin6_t); 1719 break; 1720 } 1721 break; 1722 } 1723 } 1724 if (sacnt > 0) 1725 length += sizeof (rtm_ext_t) + TSOL_RTSECATTR_SIZE(sacnt); 1726 1727 return (length); 1728 } 1729 1730 /* 1731 * This routine is called to generate a message to the routing 1732 * socket indicating that a redirect has occured, a routing lookup 1733 * has failed, or that a protocol has detected timeouts to a particular 1734 * destination. This routine is called for message types RTM_LOSING, 1735 * RTM_REDIRECT, and RTM_MISS. 1736 */ 1737 void 1738 ip_rts_change(int type, ipaddr_t dst_addr, ipaddr_t gw_addr, ipaddr_t net_mask, 1739 ipaddr_t source, ipaddr_t author, int flags, int error, int rtm_addrs) 1740 { 1741 rt_msghdr_t *rtm; 1742 mblk_t *mp; 1743 1744 if (rtm_addrs == 0) 1745 return; 1746 mp = rts_alloc_msg(type, rtm_addrs, AF_INET, 0); 1747 if (mp == NULL) 1748 return; 1749 rts_fill_msg(type, rtm_addrs, dst_addr, net_mask, gw_addr, source, 0, 1750 author, NULL, mp, 0, NULL); 1751 rtm = (rt_msghdr_t *)mp->b_rptr; 1752 rtm->rtm_flags = flags; 1753 rtm->rtm_errno = error; 1754 rtm->rtm_flags |= RTF_DONE; 1755 rtm->rtm_addrs = rtm_addrs; 1756 rts_queue_input(mp, NULL, AF_INET); 1757 } 1758 1759 /* 1760 * This routine is called to generate a message to the routing 1761 * socket indicating that the status of a network interface has changed. 1762 * Message type generated RTM_IFINFO. 1763 */ 1764 void 1765 ip_rts_ifmsg(const ipif_t *ipif) 1766 { 1767 if_msghdr_t *ifm; 1768 mblk_t *mp; 1769 sa_family_t af; 1770 1771 /* 1772 * This message should be generated only 1773 * when the physical device is changing 1774 * state. 1775 */ 1776 if (ipif->ipif_id != 0) 1777 return; 1778 if (ipif->ipif_isv6) { 1779 af = AF_INET6; 1780 mp = rts_alloc_msg(RTM_IFINFO, RTA_IFP, af, 0); 1781 if (mp == NULL) 1782 return; 1783 rts_fill_msg_v6(RTM_IFINFO, RTA_IFP, &ipv6_all_zeros, 1784 &ipv6_all_zeros, &ipv6_all_zeros, &ipv6_all_zeros, 1785 &ipv6_all_zeros, &ipv6_all_zeros, ipif, mp, 0, NULL); 1786 } else { 1787 af = AF_INET; 1788 mp = rts_alloc_msg(RTM_IFINFO, RTA_IFP, af, 0); 1789 if (mp == NULL) 1790 return; 1791 rts_fill_msg(RTM_IFINFO, RTA_IFP, 0, 0, 0, 0, 0, 0, ipif, mp, 1792 0, NULL); 1793 } 1794 ifm = (if_msghdr_t *)mp->b_rptr; 1795 ifm->ifm_index = ipif->ipif_ill->ill_phyint->phyint_ifindex; 1796 ifm->ifm_flags = ipif->ipif_flags | ipif->ipif_ill->ill_flags | 1797 ipif->ipif_ill->ill_phyint->phyint_flags; 1798 rts_getifdata(&ifm->ifm_data, ipif); 1799 ifm->ifm_addrs = RTA_IFP; 1800 rts_queue_input(mp, NULL, af); 1801 } 1802 1803 /* 1804 * This is called to generate messages to the routing socket 1805 * indicating a network interface has had addresses associated with it. 1806 * The structure of the code is based on the 4.4BSD-Lite2 <net/rtsock.c>. 1807 */ 1808 void 1809 ip_rts_newaddrmsg(int cmd, int error, const ipif_t *ipif) 1810 { 1811 int pass; 1812 int ncmd; 1813 int rtm_addrs; 1814 mblk_t *mp; 1815 ifa_msghdr_t *ifam; 1816 rt_msghdr_t *rtm; 1817 sa_family_t af; 1818 1819 if (ipif->ipif_isv6) 1820 af = AF_INET6; 1821 else 1822 af = AF_INET; 1823 /* 1824 * If the request is DELETE, send RTM_DELETE and RTM_DELADDR. 1825 * if the request is ADD, send RTM_NEWADDR and RTM_ADD. 1826 */ 1827 for (pass = 1; pass < 3; pass++) { 1828 if ((cmd == RTM_ADD && pass == 1) || 1829 (cmd == RTM_DELETE && pass == 2)) { 1830 ncmd = ((cmd == RTM_ADD) ? RTM_NEWADDR : RTM_DELADDR); 1831 1832 rtm_addrs = (RTA_IFA | RTA_NETMASK | RTA_BRD | RTA_IFP); 1833 mp = rts_alloc_msg(ncmd, rtm_addrs, af, 0); 1834 if (mp == NULL) 1835 continue; 1836 switch (af) { 1837 case AF_INET: 1838 rts_fill_msg(ncmd, rtm_addrs, 0, 1839 ipif->ipif_net_mask, 0, ipif->ipif_lcl_addr, 1840 ipif->ipif_pp_dst_addr, 0, ipif, mp, 1841 0, NULL); 1842 break; 1843 case AF_INET6: 1844 rts_fill_msg_v6(ncmd, rtm_addrs, 1845 &ipv6_all_zeros, &ipif->ipif_v6net_mask, 1846 &ipv6_all_zeros, &ipif->ipif_v6lcl_addr, 1847 &ipif->ipif_v6pp_dst_addr, &ipv6_all_zeros, 1848 ipif, mp, 0, NULL); 1849 break; 1850 } 1851 ifam = (ifa_msghdr_t *)mp->b_rptr; 1852 ifam->ifam_index = 1853 ipif->ipif_ill->ill_phyint->phyint_ifindex; 1854 ifam->ifam_metric = ipif->ipif_metric; 1855 ifam->ifam_flags = ((cmd == RTM_ADD) ? RTF_UP : 0); 1856 ifam->ifam_addrs = rtm_addrs; 1857 rts_queue_input(mp, NULL, af); 1858 } 1859 if ((cmd == RTM_ADD && pass == 2) || 1860 (cmd == RTM_DELETE && pass == 1)) { 1861 rtm_addrs = (RTA_DST | RTA_NETMASK); 1862 mp = rts_alloc_msg(cmd, rtm_addrs, af, 0); 1863 if (mp == NULL) 1864 continue; 1865 switch (af) { 1866 case AF_INET: 1867 rts_fill_msg(cmd, rtm_addrs, 1868 ipif->ipif_lcl_addr, ipif->ipif_net_mask, 0, 1869 0, 0, 0, NULL, mp, 0, NULL); 1870 break; 1871 case AF_INET6: 1872 rts_fill_msg_v6(cmd, rtm_addrs, 1873 &ipif->ipif_v6lcl_addr, 1874 &ipif->ipif_v6net_mask, &ipv6_all_zeros, 1875 &ipv6_all_zeros, &ipv6_all_zeros, 1876 &ipv6_all_zeros, NULL, mp, 0, NULL); 1877 break; 1878 } 1879 rtm = (rt_msghdr_t *)mp->b_rptr; 1880 rtm->rtm_index = 1881 ipif->ipif_ill->ill_phyint->phyint_ifindex; 1882 rtm->rtm_flags = ((cmd == RTM_ADD) ? RTF_UP : 0); 1883 rtm->rtm_errno = error; 1884 if (error == 0) 1885 rtm->rtm_flags |= RTF_DONE; 1886 rtm->rtm_addrs = rtm_addrs; 1887 rts_queue_input(mp, NULL, af); 1888 } 1889 } 1890 } 1891 1892 /* 1893 * Based on the address family specified in a sockaddr, copy the address field 1894 * into an in6_addr_t. 1895 * 1896 * In the case of AF_UNSPEC, we assume the family is actually AF_INET for 1897 * compatibility with programs that leave the family cleared in the sockaddr. 1898 * Callers of rts_copyfromsockaddr should check the family themselves if they 1899 * wish to verify its value. 1900 * 1901 * In the case of AF_INET6, a check is made to ensure that address is not an 1902 * IPv4-mapped address. 1903 */ 1904 size_t 1905 rts_copyfromsockaddr(struct sockaddr *sa, in6_addr_t *addrp) 1906 { 1907 switch (sa->sa_family) { 1908 case AF_INET: 1909 case AF_UNSPEC: 1910 IN6_IPADDR_TO_V4MAPPED(((sin_t *)sa)->sin_addr.s_addr, addrp); 1911 return (sizeof (sin_t)); 1912 case AF_INET6: 1913 *addrp = ((sin6_t *)sa)->sin6_addr; 1914 if (IN6_IS_ADDR_V4MAPPED(addrp)) 1915 return (0); 1916 return (sizeof (sin6_t)); 1917 default: 1918 return (0); 1919 } 1920 } 1921