if_fddisubr.c revision 93382
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 93382 2002-03-29 10:40:35Z mdodd $ 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/kernel.h> 47#include <sys/malloc.h> 48#include <sys/mbuf.h> 49#include <sys/module.h> 50#include <sys/socket.h> 51#include <sys/sockio.h> 52 53#include <net/if.h> 54#include <net/if_llc.h> 55#include <net/if_dl.h> 56#include <net/if_types.h> 57#include <net/netisr.h> 58#include <net/route.h> 59#include <net/bpf.h> 60#include <net/fddi.h> 61 62#if defined(INET) || defined(INET6) 63#include <netinet/in.h> 64#include <netinet/in_var.h> 65#include <netinet/if_ether.h> 66#endif 67#ifdef INET6 68#include <netinet6/nd6.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 90extern u_char at_org_code[ 3 ]; 91extern u_char aarp_org_code[ 3 ]; 92#endif /* NETATALK */ 93 94static u_char fddibroadcastaddr[FDDI_ADDR_LEN] = 95 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; 96 97static int fddi_resolvemulti(struct ifnet *, struct sockaddr **, 98 struct sockaddr *); 99 100#define IFP2AC(IFP) ((struct arpcom *)IFP) 101#define senderr(e) { error = (e); goto bad; } 102 103/* 104 * FDDI output routine. 105 * Encapsulate a packet of type family for the local net. 106 * Use trailer local net encapsulation if enough data in first 107 * packet leaves a multiple of 512 bytes of data in remainder. 108 * Assumes that ifp is actually pointer to arpcom structure. 109 */ 110int 111fddi_output(ifp, m, dst, rt0) 112 struct ifnet *ifp; 113 struct mbuf *m; 114 struct sockaddr *dst; 115 struct rtentry *rt0; 116{ 117 u_int16_t type; 118 int loop_copy = 0, error = 0, hdrcmplt = 0; 119 u_char esrc[FDDI_ADDR_LEN], edst[FDDI_ADDR_LEN]; 120 struct rtentry *rt; 121 struct fddi_header *fh; 122 struct arpcom *ac = IFP2AC(ifp); 123 124 if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING)) 125 senderr(ENETDOWN); 126 getmicrotime(&ifp->if_lastchange); 127 if ((rt = rt0) != NULL) { 128 if ((rt->rt_flags & RTF_UP) == 0) { 129 if ((rt0 = rt = rtalloc1(dst, 1, 0UL)) != NULL) 130 rt->rt_refcnt--; 131 else 132 senderr(EHOSTUNREACH); 133 } 134 if (rt->rt_flags & RTF_GATEWAY) { 135 if (rt->rt_gwroute == 0) 136 goto lookup; 137 if (((rt = rt->rt_gwroute)->rt_flags & RTF_UP) == 0) { 138 rtfree(rt); rt = rt0; 139 lookup: rt->rt_gwroute = rtalloc1(rt->rt_gateway, 1, 0UL); 140 if ((rt = rt->rt_gwroute) == 0) 141 senderr(EHOSTUNREACH); 142 } 143 } 144 if (rt->rt_flags & RTF_REJECT) 145 if (rt->rt_rmx.rmx_expire == 0 || 146 time_second < rt->rt_rmx.rmx_expire) 147 senderr(rt == rt0 ? EHOSTDOWN : EHOSTUNREACH); 148 } 149 switch (dst->sa_family) { 150 151#ifdef INET 152 case AF_INET: { 153 if (!arpresolve(ifp, rt, m, dst, edst, rt0)) 154 return (0); /* if not yet resolved */ 155 type = htons(ETHERTYPE_IP); 156 break; 157 } 158#endif 159#ifdef INET6 160 case AF_INET6: 161 if (!nd6_storelladdr(ifp, rt, m, dst, (u_char *)edst)) { 162 /* Something bad happened */ 163 return (0); 164 } 165 type = htons(ETHERTYPE_IPV6); 166 break; 167#endif 168#ifdef IPX 169 case AF_IPX: 170 type = htons(ETHERTYPE_IPX); 171 bcopy((caddr_t)&(((struct sockaddr_ipx *)dst)->sipx_addr.x_host), 172 (caddr_t)edst, FDDI_ADDR_LEN); 173 break; 174#endif 175#ifdef NETATALK 176 case AF_APPLETALK: { 177 struct at_ifaddr *aa; 178 if (!aarpresolve(ac, m, (struct sockaddr_at *)dst, edst)) 179 return (0); 180 /* 181 * ifaddr is the first thing in at_ifaddr 182 */ 183 if ((aa = at_ifawithnet( (struct sockaddr_at *)dst)) == 0) 184 goto bad; 185 186 /* 187 * In the phase 2 case, we need to prepend an mbuf for the llc header. 188 * Since we must preserve the value of m, which is passed to us by 189 * value, we m_copy() the first mbuf, and use it for our llc header. 190 */ 191 if (aa->aa_flags & AFA_PHASE2) { 192 struct llc llc; 193 194 M_PREPEND(m, LLC_SNAPFRAMELEN, M_TRYWAIT); 195 if (m == 0) 196 senderr(ENOBUFS); 197 llc.llc_dsap = llc.llc_ssap = LLC_SNAP_LSAP; 198 llc.llc_control = LLC_UI; 199 bcopy(at_org_code, llc.llc_snap.org_code, sizeof(at_org_code)); 200 llc.llc_snap.ether_type = htons(ETHERTYPE_AT); 201 bcopy(&llc, mtod(m, caddr_t), LLC_SNAPFRAMELEN); 202 type = 0; 203 } else { 204 type = htons(ETHERTYPE_AT); 205 } 206 break; 207 } 208#endif /* NETATALK */ 209#ifdef NS 210 case AF_NS: 211 type = htons(ETHERTYPE_NS); 212 bcopy((caddr_t)&(((struct sockaddr_ns *)dst)->sns_addr.x_host), 213 (caddr_t)edst, FDDI_ADDR_LEN); 214 break; 215#endif 216 217 case pseudo_AF_HDRCMPLT: 218 { 219 struct ether_header *eh; 220 hdrcmplt = 1; 221 eh = (struct ether_header *)dst->sa_data; 222 bcopy((caddr_t)eh->ether_shost, (caddr_t)esrc, FDDI_ADDR_LEN); 223 /* FALLTHROUGH */ 224 } 225 226 case AF_UNSPEC: 227 { 228 struct ether_header *eh; 229 loop_copy = -1; 230 eh = (struct ether_header *)dst->sa_data; 231 bcopy((caddr_t)eh->ether_dhost, (caddr_t)edst, FDDI_ADDR_LEN); 232 if (*edst & 1) 233 m->m_flags |= (M_BCAST|M_MCAST); 234 type = eh->ether_type; 235 break; 236 } 237 238 case AF_IMPLINK: 239 { 240 fh = mtod(m, struct fddi_header *); 241 error = EPROTONOSUPPORT; 242 switch (fh->fddi_fc & (FDDIFC_C|FDDIFC_L|FDDIFC_F)) { 243 case FDDIFC_LLC_ASYNC: { 244 /* legal priorities are 0 through 7 */ 245 if ((fh->fddi_fc & FDDIFC_Z) > 7) 246 goto bad; 247 break; 248 } 249 case FDDIFC_LLC_SYNC: { 250 /* FDDIFC_Z bits reserved, must be zero */ 251 if (fh->fddi_fc & FDDIFC_Z) 252 goto bad; 253 break; 254 } 255 case FDDIFC_SMT: { 256 /* FDDIFC_Z bits must be non zero */ 257 if ((fh->fddi_fc & FDDIFC_Z) == 0) 258 goto bad; 259 break; 260 } 261 default: { 262 /* anything else is too dangerous */ 263 goto bad; 264 } 265 } 266 error = 0; 267 if (fh->fddi_dhost[0] & 1) 268 m->m_flags |= (M_BCAST|M_MCAST); 269 goto queue_it; 270 } 271 default: 272 printf("%s%d: can't handle af%d\n", ifp->if_name, ifp->if_unit, 273 dst->sa_family); 274 senderr(EAFNOSUPPORT); 275 } 276 277 /* 278 * Add LLC header. 279 */ 280 if (type != 0) { 281 struct llc *l; 282 M_PREPEND(m, LLC_SNAPFRAMELEN, M_DONTWAIT); 283 if (m == 0) 284 senderr(ENOBUFS); 285 l = mtod(m, struct llc *); 286 l->llc_control = LLC_UI; 287 l->llc_dsap = l->llc_ssap = LLC_SNAP_LSAP; 288 l->llc_snap.org_code[0] = l->llc_snap.org_code[1] = l->llc_snap.org_code[2] = 0; 289 bcopy((caddr_t)&type, (caddr_t)&l->llc_snap.ether_type, 290 sizeof(u_int16_t)); 291 } 292 293 /* 294 * Add local net header. If no space in first mbuf, 295 * allocate another. 296 */ 297 M_PREPEND(m, FDDI_HDR_LEN, M_DONTWAIT); 298 if (m == 0) 299 senderr(ENOBUFS); 300 fh = mtod(m, struct fddi_header *); 301 fh->fddi_fc = FDDIFC_LLC_ASYNC|FDDIFC_LLC_PRIO4; 302 bcopy((caddr_t)edst, (caddr_t)fh->fddi_dhost, FDDI_ADDR_LEN); 303 queue_it: 304 if (hdrcmplt) 305 bcopy((caddr_t)esrc, (caddr_t)fh->fddi_shost, FDDI_ADDR_LEN); 306 else 307 bcopy((caddr_t)ac->ac_enaddr, (caddr_t)fh->fddi_shost, 308 FDDI_ADDR_LEN); 309 310 /* 311 * If a simplex interface, and the packet is being sent to our 312 * Ethernet address or a broadcast address, loopback a copy. 313 * XXX To make a simplex device behave exactly like a duplex 314 * device, we should copy in the case of sending to our own 315 * ethernet address (thus letting the original actually appear 316 * on the wire). However, we don't do that here for security 317 * reasons and compatibility with the original behavior. 318 */ 319 if ((ifp->if_flags & IFF_SIMPLEX) && (loop_copy != -1)) { 320 if ((m->m_flags & M_BCAST) || loop_copy) { 321 struct mbuf *n = m_copy(m, 0, (int)M_COPYALL); 322 323 (void) if_simloop(ifp, 324 n, dst->sa_family, FDDI_HDR_LEN); 325 } else if (bcmp(fh->fddi_dhost, 326 fh->fddi_shost, FDDI_ADDR_LEN) == 0) { 327 (void) if_simloop(ifp, 328 m, dst->sa_family, FDDI_HDR_LEN); 329 return (0); /* XXX */ 330 } 331 } 332 333 if (! IF_HANDOFF(&ifp->if_snd, m, ifp)) 334 senderr(ENOBUFS); 335 return (error); 336 337bad: 338 ifp->if_oerrors++; 339 if (m) 340 m_freem(m); 341 return (error); 342} 343 344/* 345 * Process a received FDDI packet; 346 * the packet is in the mbuf chain m without 347 * the fddi header, which is provided separately. 348 */ 349void 350fddi_input(ifp, fh, m) 351 struct ifnet *ifp; 352 struct fddi_header *fh; 353 struct mbuf *m; 354{ 355 struct ifqueue *inq; 356 struct llc *l; 357 358 /* 359 * Discard packet if interface is not up. 360 */ 361 if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING)) 362 goto dropanyway; 363 364 /* 365 * Discard non local unicast packets when interface 366 * is in promiscuous mode. 367 */ 368 if ((ifp->if_flags & IFF_PROMISC) && ((fh->fddi_dhost[0] & 1) == 0) && 369 (bcmp(IFP2AC(ifp)->ac_enaddr, (caddr_t)fh->fddi_dhost, 370 FDDI_ADDR_LEN) != 0)) 371 goto dropanyway; 372 373 /* 374 * Set mbuf flags for bcast/mcast. 375 */ 376 if (fh->fddi_dhost[0] & 1) { 377 if (bcmp((caddr_t)ifp->if_broadcastaddr, 378 (caddr_t)fh->fddi_dhost, FDDI_ADDR_LEN) == 0) 379 m->m_flags |= M_BCAST; 380 else 381 m->m_flags |= M_MCAST; 382 ifp->if_imcasts++; 383 } 384 385 /* 386 * Update interface statistics. 387 */ 388 getmicrotime(&ifp->if_lastchange); 389 ifp->if_ibytes += (m->m_pkthdr.len + FDDI_HDR_LEN); 390 391#ifdef M_LINK0 392 /* 393 * If this has a LLC priority of 0, then mark it so upper 394 * layers have a hint that it really came via a FDDI/Ethernet 395 * bridge. 396 */ 397 if ((fh->fddi_fc & FDDIFC_LLC_PRIO7) == FDDIFC_LLC_PRIO0) 398 m->m_flags |= M_LINK0; 399#endif 400 401 m = m_pullup(m, sizeof(struct llc)); 402 if (m == 0) { 403 ifp->if_ierrors++; 404 goto dropanyway; 405 } 406 l = mtod(m, struct llc *); 407 408 switch (l->llc_dsap) { 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 ifp->if_noproto++; 414 goto dropanyway; 415 } 416#ifdef NETATALK 417 if (Bcmp(&(l->llc_snap.org_code)[0], at_org_code, 418 sizeof(at_org_code)) == 0 && 419 ntohs(l->llc_snap.ether_type) == ETHERTYPE_AT) { 420 inq = &atintrq2; 421 m_adj(m, LLC_SNAPFRAMELEN); 422 schednetisr(NETISR_ATALK); 423 break; 424 } 425 426 if (Bcmp(&(l->llc_snap.org_code)[0], aarp_org_code, 427 sizeof(aarp_org_code)) == 0 && 428 ntohs(l->llc_snap.ether_type) == ETHERTYPE_AARP) { 429 m_adj(m, LLC_SNAPFRAMELEN); 430 aarpinput(IFP2AC(ifp), m); /* XXX */ 431 return; 432 } 433#endif /* NETATALK */ 434 if (l->llc_snap.org_code[0] != 0 || 435 l->llc_snap.org_code[1] != 0 || 436 l->llc_snap.org_code[2] != 0) { 437 ifp->if_noproto++; 438 goto dropanyway; 439 } 440 441 type = ntohs(l->llc_snap.ether_type); 442 m_adj(m, LLC_SNAPFRAMELEN); 443 444 switch (type) { 445#ifdef INET 446 case ETHERTYPE_IP: 447 if (ipflow_fastforward(m)) 448 return; 449 schednetisr(NETISR_IP); 450 inq = &ipintrq; 451 break; 452 453 case ETHERTYPE_ARP: 454 if (ifp->if_flags & IFF_NOARP) 455 goto dropanyway; 456 schednetisr(NETISR_ARP); 457 inq = &arpintrq; 458 break; 459#endif 460#ifdef INET6 461 case ETHERTYPE_IPV6: 462 schednetisr(NETISR_IPV6); 463 inq = &ip6intrq; 464 break; 465#endif 466#ifdef IPX 467 case ETHERTYPE_IPX: 468 schednetisr(NETISR_IPX); 469 inq = &ipxintrq; 470 break; 471#endif 472#ifdef NS 473 case ETHERTYPE_NS: 474 schednetisr(NETISR_NS); 475 inq = &nsintrq; 476 break; 477#endif 478#ifdef DECNET 479 case ETHERTYPE_DECNET: 480 schednetisr(NETISR_DECNET); 481 inq = &decnetintrq; 482 break; 483#endif 484#ifdef NETATALK 485 case ETHERTYPE_AT: 486 schednetisr(NETISR_ATALK); 487 inq = &atintrq1; 488 break; 489 case ETHERTYPE_AARP: 490 /* probably this should be done with a NETISR as well */ 491 aarpinput(IFP2AC(ifp), m); /* XXX */ 492 return; 493#endif /* NETATALK */ 494 default: 495 /* printf("fddi_input: unknown protocol 0x%x\n", type); */ 496 ifp->if_noproto++; 497 goto dropanyway; 498 } 499 break; 500 } 501 502 default: 503 /* printf("fddi_input: unknown dsap 0x%x\n", l->llc_dsap); */ 504 ifp->if_noproto++; 505 goto dropanyway; 506 } 507 508 (void) IF_HANDOFF(inq, m, NULL); 509 return; 510 511dropanyway: 512 ifp->if_iqdrops++; 513 if (m) 514 m_freem(m); 515 return; 516} 517 518/* 519 * Perform common duties while attaching to interface list 520 */ 521void 522fddi_ifattach(ifp) 523 struct ifnet *ifp; 524{ 525 struct ifaddr *ifa; 526 struct sockaddr_dl *sdl; 527 528 ifp->if_type = IFT_FDDI; 529 ifp->if_addrlen = FDDI_ADDR_LEN; 530 ifp->if_hdrlen = 21; 531 532 if_attach(ifp); /* Must be called before additional assignments */ 533 534 ifp->if_mtu = FDDIMTU; 535 ifp->if_output = fddi_output; 536 ifp->if_resolvemulti = fddi_resolvemulti; 537 ifp->if_broadcastaddr = fddibroadcastaddr; 538 ifp->if_baudrate = 100000000; 539#ifdef IFF_NOTRAILERS 540 ifp->if_flags |= IFF_NOTRAILERS; 541#endif 542 ifa = ifaddr_byindex(ifp->if_index); 543 if (ifa == NULL) { 544 printf("%s(): no lladdr for %s%d!\n", __FUNCTION__, 545 ifp->if_name, ifp->if_unit); 546 return; 547 } 548 549 sdl = (struct sockaddr_dl *)ifa->ifa_addr; 550 sdl->sdl_type = IFT_FDDI; 551 sdl->sdl_alen = ifp->if_addrlen; 552 bcopy(IFP2AC(ifp)->ac_enaddr, LLADDR(sdl), ifp->if_addrlen); 553 554 return; 555} 556 557void 558fddi_ifdetach(ifp, bpf) 559 struct ifnet *ifp; 560 int bpf; 561{ 562 563 if (bpf) 564 bpfdetach(ifp); 565 566 if_detach(ifp); 567 568 return; 569} 570 571int 572fddi_ioctl (ifp, command, data) 573 struct ifnet *ifp; 574 int command; 575 caddr_t data; 576{ 577 struct ifaddr *ifa; 578 struct ifreq *ifr; 579 int error; 580 581 ifa = (struct ifaddr *) data; 582 ifr = (struct ifreq *) data; 583 error = 0; 584 585 switch (command) { 586 case SIOCSIFADDR: 587 ifp->if_flags |= IFF_UP; 588 589 switch (ifa->ifa_addr->sa_family) { 590#ifdef INET 591 case AF_INET: /* before arpwhohas */ 592 ifp->if_init(ifp->if_softc); 593 arp_ifinit(ifp, ifa); 594 break; 595#endif 596#ifdef IPX 597 /* 598 * XXX - This code is probably wrong 599 */ 600 case AF_IPX: { 601 struct ipx_addr *ina; 602 struct arpcom *ac; 603 604 ina = &(IA_SIPX(ifa)->sipx_addr); 605 ac = IFP2AC(ifp); 606 607 if (ipx_nullhost(*ina)) { 608 ina->x_host = *(union ipx_host *) 609 ac->ac_enaddr; 610 } else { 611 bcopy((caddr_t) ina->x_host.c_host, 612 (caddr_t) ac->ac_enaddr, 613 sizeof(ac->ac_enaddr)); 614 } 615 616 /* 617 * Set new address 618 */ 619 ifp->if_init(ifp->if_softc); 620 } 621 break; 622#endif 623 default: 624 ifp->if_init(ifp->if_softc); 625 break; 626 } 627 case SIOCGIFADDR: { 628 struct sockaddr *sa; 629 630 sa = (struct sockaddr *) & ifr->ifr_data; 631 bcopy(IFP2AC(ifp)->ac_enaddr, 632 (caddr_t) sa->sa_data, FDDI_ADDR_LEN); 633 634 } 635 break; 636 case SIOCSIFMTU: 637 /* 638 * Set the interface MTU. 639 */ 640 if (ifr->ifr_mtu > FDDIMTU) { 641 error = EINVAL; 642 } else { 643 ifp->if_mtu = ifr->ifr_mtu; 644 } 645 break; 646 default: 647 break; 648 } 649 650 return (error); 651} 652 653static int 654fddi_resolvemulti(ifp, llsa, sa) 655 struct ifnet *ifp; 656 struct sockaddr **llsa; 657 struct sockaddr *sa; 658{ 659 struct sockaddr_dl *sdl; 660 struct sockaddr_in *sin; 661#ifdef INET6 662 struct sockaddr_in6 *sin6; 663#endif 664 u_char *e_addr; 665 666 switch(sa->sa_family) { 667 case AF_LINK: 668 /* 669 * No mapping needed. Just check that it's a valid MC address. 670 */ 671 sdl = (struct sockaddr_dl *)sa; 672 e_addr = LLADDR(sdl); 673 if ((e_addr[0] & 1) != 1) 674 return (EADDRNOTAVAIL); 675 *llsa = 0; 676 return (0); 677 678#ifdef INET 679 case AF_INET: 680 sin = (struct sockaddr_in *)sa; 681 if (!IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) 682 return (EADDRNOTAVAIL); 683 MALLOC(sdl, struct sockaddr_dl *, sizeof *sdl, M_IFMADDR, 684 M_WAITOK); 685 sdl->sdl_len = sizeof *sdl; 686 sdl->sdl_family = AF_LINK; 687 sdl->sdl_index = ifp->if_index; 688 sdl->sdl_type = IFT_FDDI; 689 sdl->sdl_nlen = 0; 690 sdl->sdl_alen = FDDI_ADDR_LEN; 691 sdl->sdl_slen = 0; 692 e_addr = LLADDR(sdl); 693 ETHER_MAP_IP_MULTICAST(&sin->sin_addr, e_addr); 694 *llsa = (struct sockaddr *)sdl; 695 return (0); 696#endif 697#ifdef INET6 698 case AF_INET6: 699 sin6 = (struct sockaddr_in6 *)sa; 700 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { 701 /* 702 * An IP6 address of 0 means listen to all 703 * of the Ethernet multicast address used for IP6. 704 * (This is used for multicast routers.) 705 */ 706 ifp->if_flags |= IFF_ALLMULTI; 707 *llsa = 0; 708 return (0); 709 } 710 if (!IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) 711 return (EADDRNOTAVAIL); 712 MALLOC(sdl, struct sockaddr_dl *, sizeof *sdl, M_IFMADDR, 713 M_WAITOK); 714 sdl->sdl_len = sizeof *sdl; 715 sdl->sdl_family = AF_LINK; 716 sdl->sdl_index = ifp->if_index; 717 sdl->sdl_type = IFT_FDDI; 718 sdl->sdl_nlen = 0; 719 sdl->sdl_alen = FDDI_ADDR_LEN; 720 sdl->sdl_slen = 0; 721 e_addr = LLADDR(sdl); 722 ETHER_MAP_IPV6_MULTICAST(&sin6->sin6_addr, e_addr); 723 *llsa = (struct sockaddr *)sdl; 724 return (0); 725#endif 726 727 default: 728 /* 729 * Well, the text isn't quite right, but it's the name 730 * that counts... 731 */ 732 return (EAFNOSUPPORT); 733 } 734 735 return (0); 736} 737 738static moduledata_t fddi_mod = { 739 "fddi", /* module name */ 740 NULL, /* event handler */ 741 0 /* extra data */ 742}; 743 744DECLARE_MODULE(fddi, fddi_mod, SI_SUB_PSEUDO, SI_ORDER_ANY); 745MODULE_VERSION(fddi, 1); 746