if_fddisubr.c revision 92725
1/* 2 * Copyright (c) 1995, 1996 3 * Matt Thomas <matt@3am-software.com>. All rights reserved. 4 * Copyright (c) 1982, 1989, 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * from: if_ethersubr.c,v 1.5 1994/12/13 22:31:45 wollman Exp 36 * $FreeBSD: head/sys/net/if_fddisubr.c 92725 2002-03-19 21:54:18Z alfred $ 37 */ 38 39#include "opt_atalk.h" 40#include "opt_inet.h" 41#include "opt_inet6.h" 42#include "opt_ipx.h" 43 44#include <sys/param.h> 45#include <sys/systm.h> 46#include <sys/mbuf.h> 47#include <sys/socket.h> 48#include <sys/malloc.h> 49 50#include <net/if.h> 51#include <net/netisr.h> 52#include <net/route.h> 53#include <net/if_llc.h> 54#include <net/if_dl.h> 55#include <net/if_types.h> 56 57#if defined(INET) || defined(INET6) 58#include <netinet/in.h> 59#include <netinet/in_var.h> 60#include <netinet/if_ether.h> 61#endif 62#ifdef INET6 63#include <netinet6/nd6.h> 64#endif 65#if defined(__FreeBSD__) 66#include <netinet/if_fddi.h> 67#else 68#include <net/if_fddi.h> 69#endif 70 71#ifdef IPX 72#include <netipx/ipx.h> 73#include <netipx/ipx_if.h> 74#endif 75 76#ifdef NS 77#include <netns/ns.h> 78#include <netns/ns_if.h> 79#endif 80 81#ifdef DECNET 82#include <netdnet/dn.h> 83#endif 84 85#ifdef NETATALK 86#include <netatalk/at.h> 87#include <netatalk/at_var.h> 88#include <netatalk/at_extern.h> 89 90#define llc_snap_org_code llc_un.type_snap.org_code 91#define llc_snap_ether_type llc_un.type_snap.ether_type 92 93extern u_char at_org_code[ 3 ]; 94extern u_char aarp_org_code[ 3 ]; 95#endif /* NETATALK */ 96 97static int fddi_resolvemulti(struct ifnet *, struct sockaddr **, 98 struct sockaddr *); 99 100#define senderr(e) { error = (e); goto bad;} 101 102/* 103 * This really should be defined in if_llc.h but in case it isn't. 104 */ 105#ifndef llc_snap 106#define llc_snap llc_un.type_snap 107#endif 108 109#if defined(__bsdi__) || defined(__NetBSD__) 110#define RTALLOC1(a, b) rtalloc1(a, b) 111#define ARPRESOLVE(a, b, c, d, e, f) arpresolve(a, b, c, d, e) 112#elif defined(__FreeBSD__) 113#define RTALLOC1(a, b) rtalloc1(a, b, 0UL) 114#define ARPRESOLVE(a, b, c, d, e, f) arpresolve(a, b, c, d, e, f) 115#endif 116/* 117 * FDDI output routine. 118 * Encapsulate a packet of type family for the local net. 119 * Use trailer local net encapsulation if enough data in first 120 * packet leaves a multiple of 512 bytes of data in remainder. 121 * Assumes that ifp is actually pointer to arpcom structure. 122 */ 123int 124fddi_output(ifp, m, dst, rt0) 125 register struct ifnet *ifp; 126 struct mbuf *m; 127 struct sockaddr *dst; 128 struct rtentry *rt0; 129{ 130 u_int16_t type; 131 int loop_copy = 0, error = 0, hdrcmplt = 0; 132 u_char esrc[6], edst[6]; 133 register struct rtentry *rt; 134 register struct fddi_header *fh; 135 struct arpcom *ac = (struct arpcom *)ifp; 136 137 if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING)) 138 senderr(ENETDOWN); 139 getmicrotime(&ifp->if_lastchange); 140#if !defined(__bsdi__) || _BSDI_VERSION >= 199401 141 if ((rt = rt0) != NULL) { 142 if ((rt->rt_flags & RTF_UP) == 0) { 143 if ((rt0 = rt = RTALLOC1(dst, 1)) != NULL) 144 rt->rt_refcnt--; 145 else 146 senderr(EHOSTUNREACH); 147 } 148 if (rt->rt_flags & RTF_GATEWAY) { 149 if (rt->rt_gwroute == 0) 150 goto lookup; 151 if (((rt = rt->rt_gwroute)->rt_flags & RTF_UP) == 0) { 152 rtfree(rt); rt = rt0; 153 lookup: rt->rt_gwroute = RTALLOC1(rt->rt_gateway, 1); 154 if ((rt = rt->rt_gwroute) == 0) 155 senderr(EHOSTUNREACH); 156 } 157 } 158 if (rt->rt_flags & RTF_REJECT) 159 if (rt->rt_rmx.rmx_expire == 0 || 160 time_second < rt->rt_rmx.rmx_expire) 161 senderr(rt == rt0 ? EHOSTDOWN : EHOSTUNREACH); 162 } 163#endif 164 switch (dst->sa_family) { 165 166#ifdef INET 167 case AF_INET: { 168#if !defined(__bsdi__) || _BSDI_VERSION >= 199401 169 if (!ARPRESOLVE(ifp, rt, m, dst, edst, rt0)) 170 return (0); /* if not yet resolved */ 171#else 172 int usetrailers; 173 if (!arpresolve(ac, m, &((struct sockaddr_in *)dst)->sin_addr, edst, &usetrailers)) 174 return (0); /* if not yet resolved */ 175#endif 176 type = htons(ETHERTYPE_IP); 177 break; 178 } 179#endif 180#ifdef INET6 181 case AF_INET6: 182 if (!nd6_storelladdr(&ac->ac_if, rt, m, dst, (u_char *)edst)) { 183 /* Something bad happened */ 184 return(0); 185 } 186 type = htons(ETHERTYPE_IPV6); 187 break; 188#endif 189#ifdef IPX 190 case AF_IPX: 191 type = htons(ETHERTYPE_IPX); 192 bcopy((caddr_t)&(((struct sockaddr_ipx *)dst)->sipx_addr.x_host), 193 (caddr_t)edst, sizeof (edst)); 194 break; 195#endif 196#ifdef NETATALK 197 case AF_APPLETALK: { 198 struct at_ifaddr *aa; 199 if (!aarpresolve(ac, m, (struct sockaddr_at *)dst, edst)) 200 return (0); 201 /* 202 * ifaddr is the first thing in at_ifaddr 203 */ 204 if ((aa = at_ifawithnet( (struct sockaddr_at *)dst)) == 0) 205 goto bad; 206 207 /* 208 * In the phase 2 case, we need to prepend an mbuf for the llc header. 209 * Since we must preserve the value of m, which is passed to us by 210 * value, we m_copy() the first mbuf, and use it for our llc header. 211 */ 212 if (aa->aa_flags & AFA_PHASE2) { 213 struct llc llc; 214 215 M_PREPEND(m, sizeof(struct llc), M_TRYWAIT); 216 if (m == 0) 217 senderr(ENOBUFS); 218 llc.llc_dsap = llc.llc_ssap = LLC_SNAP_LSAP; 219 llc.llc_control = LLC_UI; 220 bcopy(at_org_code, llc.llc_snap_org_code, sizeof(at_org_code)); 221 llc.llc_snap_ether_type = htons(ETHERTYPE_AT); 222 bcopy(&llc, mtod(m, caddr_t), sizeof(struct llc)); 223 type = 0; 224 } else { 225 type = htons(ETHERTYPE_AT); 226 } 227 break; 228 } 229#endif /* NETATALK */ 230#ifdef NS 231 case AF_NS: 232 type = htons(ETHERTYPE_NS); 233 bcopy((caddr_t)&(((struct sockaddr_ns *)dst)->sns_addr.x_host), 234 (caddr_t)edst, sizeof (edst)); 235 break; 236#endif 237 238 case pseudo_AF_HDRCMPLT: 239 { 240 struct ether_header *eh; 241 hdrcmplt = 1; 242 eh = (struct ether_header *)dst->sa_data; 243 (void)memcpy((caddr_t)esrc, (caddr_t)eh->ether_shost, sizeof (esrc)); 244 /* FALLTHROUGH */ 245 } 246 247 case AF_UNSPEC: 248 { 249 struct ether_header *eh; 250 loop_copy = -1; 251 eh = (struct ether_header *)dst->sa_data; 252 (void)memcpy((caddr_t)edst, (caddr_t)eh->ether_dhost, sizeof (edst)); 253 if (*edst & 1) 254 m->m_flags |= (M_BCAST|M_MCAST); 255 type = eh->ether_type; 256 break; 257 } 258 259 case AF_IMPLINK: 260 { 261 fh = mtod(m, struct fddi_header *); 262 error = EPROTONOSUPPORT; 263 switch (fh->fddi_fc & (FDDIFC_C|FDDIFC_L|FDDIFC_F)) { 264 case FDDIFC_LLC_ASYNC: { 265 /* legal priorities are 0 through 7 */ 266 if ((fh->fddi_fc & FDDIFC_Z) > 7) 267 goto bad; 268 break; 269 } 270 case FDDIFC_LLC_SYNC: { 271 /* FDDIFC_Z bits reserved, must be zero */ 272 if (fh->fddi_fc & FDDIFC_Z) 273 goto bad; 274 break; 275 } 276 case FDDIFC_SMT: { 277 /* FDDIFC_Z bits must be non zero */ 278 if ((fh->fddi_fc & FDDIFC_Z) == 0) 279 goto bad; 280 break; 281 } 282 default: { 283 /* anything else is too dangerous */ 284 goto bad; 285 } 286 } 287 error = 0; 288 if (fh->fddi_dhost[0] & 1) 289 m->m_flags |= (M_BCAST|M_MCAST); 290 goto queue_it; 291 } 292 default: 293 printf("%s%d: can't handle af%d\n", ifp->if_name, ifp->if_unit, 294 dst->sa_family); 295 senderr(EAFNOSUPPORT); 296 } 297 298 if (type != 0) { 299 register struct llc *l; 300 M_PREPEND(m, sizeof (struct llc), M_DONTWAIT); 301 if (m == 0) 302 senderr(ENOBUFS); 303 l = mtod(m, struct llc *); 304 l->llc_control = LLC_UI; 305 l->llc_dsap = l->llc_ssap = LLC_SNAP_LSAP; 306 l->llc_snap.org_code[0] = l->llc_snap.org_code[1] = l->llc_snap.org_code[2] = 0; 307 (void)memcpy((caddr_t) &l->llc_snap.ether_type, (caddr_t) &type, 308 sizeof(u_int16_t)); 309 } 310 311 /* 312 * Add local net header. If no space in first mbuf, 313 * allocate another. 314 */ 315 M_PREPEND(m, sizeof (struct fddi_header), M_DONTWAIT); 316 if (m == 0) 317 senderr(ENOBUFS); 318 fh = mtod(m, struct fddi_header *); 319 fh->fddi_fc = FDDIFC_LLC_ASYNC|FDDIFC_LLC_PRIO4; 320 (void)memcpy((caddr_t)fh->fddi_dhost, (caddr_t)edst, sizeof (edst)); 321 queue_it: 322 if (hdrcmplt) 323 (void)memcpy((caddr_t)fh->fddi_shost, (caddr_t)esrc, 324 sizeof(fh->fddi_shost)); 325 else 326 (void)memcpy((caddr_t)fh->fddi_shost, (caddr_t)ac->ac_enaddr, 327 sizeof(fh->fddi_shost)); 328 /* 329 * If a simplex interface, and the packet is being sent to our 330 * Ethernet address or a broadcast address, loopback a copy. 331 * XXX To make a simplex device behave exactly like a duplex 332 * device, we should copy in the case of sending to our own 333 * ethernet address (thus letting the original actually appear 334 * on the wire). However, we don't do that here for security 335 * reasons and compatibility with the original behavior. 336 */ 337 if ((ifp->if_flags & IFF_SIMPLEX) && 338 (loop_copy != -1)) { 339 if ((m->m_flags & M_BCAST) || loop_copy) { 340 struct mbuf *n = m_copy(m, 0, (int)M_COPYALL); 341 342 (void) if_simloop(ifp, 343 n, dst->sa_family, sizeof(struct fddi_header)); 344 } else if (bcmp(fh->fddi_dhost, 345 fh->fddi_shost, sizeof(fh->fddi_shost)) == 0) { 346 (void) if_simloop(ifp, 347 m, dst->sa_family, sizeof(struct fddi_header)); 348 return(0); /* XXX */ 349 } 350 } 351 352 if (! IF_HANDOFF(&ifp->if_snd, m, ifp)) 353 senderr(ENOBUFS); 354 return (error); 355 356bad: 357 if (m) 358 m_freem(m); 359 return (error); 360} 361 362/* 363 * Process a received FDDI packet; 364 * the packet is in the mbuf chain m without 365 * the fddi header, which is provided separately. 366 */ 367void 368fddi_input(ifp, fh, m) 369 struct ifnet *ifp; 370 register struct fddi_header *fh; 371 struct mbuf *m; 372{ 373 register struct ifqueue *inq; 374 register struct llc *l; 375 376 if ((ifp->if_flags & IFF_UP) == 0) { 377 m_freem(m); 378 return; 379 } 380 getmicrotime(&ifp->if_lastchange); 381 ifp->if_ibytes += m->m_pkthdr.len + sizeof (*fh); 382 if (fh->fddi_dhost[0] & 1) { 383 if (bcmp((caddr_t)fddibroadcastaddr, (caddr_t)fh->fddi_dhost, 384 sizeof(fddibroadcastaddr)) == 0) 385 m->m_flags |= M_BCAST; 386 else 387 m->m_flags |= M_MCAST; 388 ifp->if_imcasts++; 389 } else if ((ifp->if_flags & IFF_PROMISC) 390 && bcmp(((struct arpcom *)ifp)->ac_enaddr, (caddr_t)fh->fddi_dhost, 391 sizeof(fh->fddi_dhost)) != 0) { 392 m_freem(m); 393 return; 394 } 395 396#ifdef M_LINK0 397 /* 398 * If this has a LLC priority of 0, then mark it so upper 399 * layers have a hint that it really came via a FDDI/Ethernet 400 * bridge. 401 */ 402 if ((fh->fddi_fc & FDDIFC_LLC_PRIO7) == FDDIFC_LLC_PRIO0) 403 m->m_flags |= M_LINK0; 404#endif 405 406 l = mtod(m, struct llc *); 407 switch (l->llc_dsap) { 408#if defined(INET) || defined(INET6) || defined(NS) || defined(DECNET) || defined(IPX) || defined(NETATALK) 409 case LLC_SNAP_LSAP: 410 { 411 u_int16_t type; 412 if (l->llc_control != LLC_UI || l->llc_ssap != LLC_SNAP_LSAP) 413 goto dropanyway; 414#ifdef NETATALK 415 if (Bcmp(&(l->llc_snap_org_code)[0], at_org_code, 416 sizeof(at_org_code)) == 0 && 417 ntohs(l->llc_snap_ether_type) == ETHERTYPE_AT) { 418 inq = &atintrq2; 419 m_adj( m, sizeof( struct llc )); 420 schednetisr(NETISR_ATALK); 421 break; 422 } 423 424 if (Bcmp(&(l->llc_snap_org_code)[0], aarp_org_code, 425 sizeof(aarp_org_code)) == 0 && 426 ntohs(l->llc_snap_ether_type) == ETHERTYPE_AARP) { 427 m_adj( m, sizeof( struct llc )); 428 aarpinput((struct arpcom *)ifp, m); /* XXX */ 429 return; 430 } 431#endif /* NETATALK */ 432 if (l->llc_snap.org_code[0] != 0 || l->llc_snap.org_code[1] != 0|| l->llc_snap.org_code[2] != 0) 433 goto dropanyway; 434 type = ntohs(l->llc_snap.ether_type); 435 m_adj(m, 8); 436 switch (type) { 437#ifdef INET 438 case ETHERTYPE_IP: 439 if (ipflow_fastforward(m)) 440 return; 441 schednetisr(NETISR_IP); 442 inq = &ipintrq; 443 break; 444 445 case ETHERTYPE_ARP: 446 if (ifp->if_flags & IFF_NOARP) 447 goto dropanyway; 448 schednetisr(NETISR_ARP); 449 inq = &arpintrq; 450 break; 451#endif 452#ifdef INET6 453 case ETHERTYPE_IPV6: 454 schednetisr(NETISR_IPV6); 455 inq = &ip6intrq; 456 break; 457#endif 458#ifdef IPX 459 case ETHERTYPE_IPX: 460 schednetisr(NETISR_IPX); 461 inq = &ipxintrq; 462 break; 463#endif 464#ifdef NS 465 case ETHERTYPE_NS: 466 schednetisr(NETISR_NS); 467 inq = &nsintrq; 468 break; 469#endif 470#ifdef DECNET 471 case ETHERTYPE_DECNET: 472 schednetisr(NETISR_DECNET); 473 inq = &decnetintrq; 474 break; 475#endif 476#ifdef NETATALK 477 case ETHERTYPE_AT: 478 schednetisr(NETISR_ATALK); 479 inq = &atintrq1; 480 break; 481 case ETHERTYPE_AARP: 482 /* probably this should be done with a NETISR as well */ 483 aarpinput((struct arpcom *)ifp, m); /* XXX */ 484 return; 485#endif /* NETATALK */ 486 default: 487 /* printf("fddi_input: unknown protocol 0x%x\n", type); */ 488 ifp->if_noproto++; 489 goto dropanyway; 490 } 491 break; 492 } 493#endif /* INET || NS */ 494 495 default: 496 /* printf("fddi_input: unknown dsap 0x%x\n", l->llc_dsap); */ 497 ifp->if_noproto++; 498 dropanyway: 499 m_freem(m); 500 return; 501 } 502 503 (void) IF_HANDOFF(inq, m, NULL); 504} 505/* 506 * Perform common duties while attaching to interface list 507 */ 508#ifdef __NetBSD__ 509#define ifa_next ifa_list.tqe_next 510#endif 511 512void 513fddi_ifattach(ifp) 514 register struct ifnet *ifp; 515{ 516 register struct ifaddr *ifa; 517 register struct sockaddr_dl *sdl; 518 519 ifp->if_type = IFT_FDDI; 520 ifp->if_addrlen = 6; 521 ifp->if_hdrlen = 21; 522 ifp->if_mtu = FDDIMTU; 523 ifp->if_resolvemulti = fddi_resolvemulti; 524 ifp->if_baudrate = 100000000; 525#ifdef IFF_NOTRAILERS 526 ifp->if_flags |= IFF_NOTRAILERS; 527#endif 528 ifp->if_broadcastaddr = fddibroadcastaddr; 529#if defined(__FreeBSD__) 530 ifa = ifaddr_byindex(ifp->if_index); 531 sdl = (struct sockaddr_dl *)ifa->ifa_addr; 532 sdl->sdl_type = IFT_FDDI; 533 sdl->sdl_alen = ifp->if_addrlen; 534 bcopy(((struct arpcom *)ifp)->ac_enaddr, LLADDR(sdl), ifp->if_addrlen); 535#elif defined(__NetBSD__) 536 LIST_INIT(&((struct arpcom *)ifp)->ac_multiaddrs); 537 TAILQ_FOREACH(ifa, &ifp->if_addrlist, ifa_list) 538#else 539 for (ifa = ifp->if_addrlist; ifa != NULL; ifa = ifa->ifa_next) 540#endif 541#if !defined(__FreeBSD__) 542 if ((sdl = (struct sockaddr_dl *)ifa->ifa_addr) && 543 sdl->sdl_family == AF_LINK) { 544 sdl->sdl_type = IFT_FDDI; 545 sdl->sdl_alen = ifp->if_addrlen; 546 bcopy((caddr_t)((struct arpcom *)ifp)->ac_enaddr, 547 LLADDR(sdl), ifp->if_addrlen); 548 break; 549 } 550#endif 551} 552 553static int 554fddi_resolvemulti(ifp, llsa, sa) 555 struct ifnet *ifp; 556 struct sockaddr **llsa; 557 struct sockaddr *sa; 558{ 559 struct sockaddr_dl *sdl; 560 struct sockaddr_in *sin; 561#ifdef INET6 562 struct sockaddr_in6 *sin6; 563#endif 564 u_char *e_addr; 565 566 switch(sa->sa_family) { 567 case AF_LINK: 568 /* 569 * No mapping needed. Just check that it's a valid MC address. 570 */ 571 sdl = (struct sockaddr_dl *)sa; 572 e_addr = LLADDR(sdl); 573 if ((e_addr[0] & 1) != 1) 574 return EADDRNOTAVAIL; 575 *llsa = 0; 576 return 0; 577 578#ifdef INET 579 case AF_INET: 580 sin = (struct sockaddr_in *)sa; 581 if (!IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) 582 return EADDRNOTAVAIL; 583 MALLOC(sdl, struct sockaddr_dl *, sizeof *sdl, M_IFMADDR, 584 M_WAITOK); 585 sdl->sdl_len = sizeof *sdl; 586 sdl->sdl_family = AF_LINK; 587 sdl->sdl_index = ifp->if_index; 588 sdl->sdl_type = IFT_FDDI; 589 sdl->sdl_nlen = 0; 590 sdl->sdl_alen = ETHER_ADDR_LEN; /* XXX */ 591 sdl->sdl_slen = 0; 592 e_addr = LLADDR(sdl); 593 ETHER_MAP_IP_MULTICAST(&sin->sin_addr, e_addr); 594 *llsa = (struct sockaddr *)sdl; 595 return 0; 596#endif 597#ifdef INET6 598 case AF_INET6: 599 sin6 = (struct sockaddr_in6 *)sa; 600 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { 601 /* 602 * An IP6 address of 0 means listen to all 603 * of the Ethernet multicast address used for IP6. 604 * (This is used for multicast routers.) 605 */ 606 ifp->if_flags |= IFF_ALLMULTI; 607 *llsa = 0; 608 return 0; 609 } 610 if (!IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) 611 return EADDRNOTAVAIL; 612 MALLOC(sdl, struct sockaddr_dl *, sizeof *sdl, M_IFMADDR, 613 M_WAITOK); 614 sdl->sdl_len = sizeof *sdl; 615 sdl->sdl_family = AF_LINK; 616 sdl->sdl_index = ifp->if_index; 617 sdl->sdl_type = IFT_FDDI; 618 sdl->sdl_nlen = 0; 619 sdl->sdl_alen = ETHER_ADDR_LEN; /* XXX */ 620 sdl->sdl_slen = 0; 621 e_addr = LLADDR(sdl); 622 ETHER_MAP_IPV6_MULTICAST(&sin6->sin6_addr, e_addr); 623 *llsa = (struct sockaddr *)sdl; 624 return 0; 625#endif 626 627 default: 628 /* 629 * Well, the text isn't quite right, but it's the name 630 * that counts... 631 */ 632 return EAFNOSUPPORT; 633 } 634} 635