1 /*-
2 * Copyright (c) 1998, Larry Lile
3 * All rights reserved.
4 *
5 * For latest sources and information on this driver, please
6 * go to http://anarchy.stdio.com.
7 *
8 * Questions, comments or suggestions should be directed to
9 * Larry Lile <lile@stdio.com>.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice unmodified, this list of conditions, and the following
16 * disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * $FreeBSD$
34 *
35 */
36
37 /*
38 *
39 * General ISO 802.5 (Token Ring) support routines
40 *
41 */
42
43 #include "opt_inet.h"
44 #include "opt_inet6.h"
45
46 #include <sys/param.h>
47 #include <sys/systm.h>
48 #include <sys/kernel.h>
49 #include <sys/malloc.h>
50 #include <sys/mbuf.h>
51 #include <sys/module.h>
52 #include <sys/socket.h>
53 #include <sys/sockio.h>
54
55 #include <net/if.h>
56 #include <net/if_var.h>
57 #include <net/if_arp.h>
58 #include <net/if_dl.h>
59 #include <net/if_llc.h>
60 #include <net/if_types.h>
61 #include <net/if_llatbl.h>
62
63 #include <net/ethernet.h>
64 #include <net/netisr.h>
65 #include <net/route.h>
66 #include <net/bpf.h>
67 #include <net/iso88025.h>
68
69 #if defined(INET) || defined(INET6)
70 #include <netinet/in.h>
71 #include <netinet/in_var.h>
72 #include <netinet/if_ether.h>
73 #endif
74 #ifdef INET6
75 #include <netinet6/nd6.h>
76 #endif
77
78 #include <security/mac/mac_framework.h>
79
80 static const u_char iso88025_broadcastaddr[ISO88025_ADDR_LEN] =
81 { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
82
83 static int iso88025_resolvemulti (struct ifnet *, struct sockaddr **,
84 struct sockaddr *);
85
86 #define senderr(e) do { error = (e); goto bad; } while (0)
87
88 /*
89 * Perform common duties while attaching to interface list
90 */
91 void
iso88025_ifattach(struct ifnet * ifp,const u_int8_t * lla,int bpf)92 iso88025_ifattach(struct ifnet *ifp, const u_int8_t *lla, int bpf)
93 {
94 struct ifaddr *ifa;
95 struct sockaddr_dl *sdl;
96
97 ifa = NULL;
98
99 ifp->if_type = IFT_ISO88025;
100 ifp->if_addrlen = ISO88025_ADDR_LEN;
101 ifp->if_hdrlen = ISO88025_HDR_LEN;
102
103 if_attach(ifp); /* Must be called before additional assignments */
104
105 ifp->if_output = iso88025_output;
106 ifp->if_input = iso88025_input;
107 ifp->if_resolvemulti = iso88025_resolvemulti;
108 ifp->if_broadcastaddr = iso88025_broadcastaddr;
109
110 if (ifp->if_baudrate == 0)
111 ifp->if_baudrate = TR_16MBPS; /* 16Mbit should be a safe default */
112 if (ifp->if_mtu == 0)
113 ifp->if_mtu = ISO88025_DEFAULT_MTU;
114
115 ifa = ifp->if_addr;
116 KASSERT(ifa != NULL, ("%s: no lladdr!\n", __func__));
117
118 sdl = (struct sockaddr_dl *)ifa->ifa_addr;
119 sdl->sdl_type = IFT_ISO88025;
120 sdl->sdl_alen = ifp->if_addrlen;
121 bcopy(lla, LLADDR(sdl), ifp->if_addrlen);
122
123 if (bpf)
124 bpfattach(ifp, DLT_IEEE802, ISO88025_HDR_LEN);
125
126 return;
127 }
128
129 /*
130 * Perform common duties while detaching a Token Ring interface
131 */
132 void
iso88025_ifdetach(ifp,bpf)133 iso88025_ifdetach(ifp, bpf)
134 struct ifnet *ifp;
135 int bpf;
136 {
137
138 if (bpf)
139 bpfdetach(ifp);
140
141 if_detach(ifp);
142
143 return;
144 }
145
146 int
iso88025_ioctl(struct ifnet * ifp,u_long command,caddr_t data)147 iso88025_ioctl(struct ifnet *ifp, u_long command, caddr_t data)
148 {
149 struct ifaddr *ifa;
150 struct ifreq *ifr;
151 int error;
152
153 ifa = (struct ifaddr *) data;
154 ifr = (struct ifreq *) data;
155 error = 0;
156
157 switch (command) {
158 case SIOCSIFADDR:
159 ifp->if_flags |= IFF_UP;
160
161 switch (ifa->ifa_addr->sa_family) {
162 #ifdef INET
163 case AF_INET:
164 ifp->if_init(ifp->if_softc); /* before arpwhohas */
165 arp_ifinit(ifp, ifa);
166 break;
167 #endif /* INET */
168 default:
169 ifp->if_init(ifp->if_softc);
170 break;
171 }
172 break;
173
174 case SIOCGIFADDR: {
175 struct sockaddr *sa;
176
177 sa = (struct sockaddr *) & ifr->ifr_data;
178 bcopy(IF_LLADDR(ifp),
179 (caddr_t) sa->sa_data, ISO88025_ADDR_LEN);
180 }
181 break;
182
183 case SIOCSIFMTU:
184 /*
185 * Set the interface MTU.
186 */
187 if (ifr->ifr_mtu > ISO88025_MAX_MTU) {
188 error = EINVAL;
189 } else {
190 ifp->if_mtu = ifr->ifr_mtu;
191 }
192 break;
193 default:
194 error = EINVAL; /* XXX netbsd has ENOTTY??? */
195 break;
196 }
197
198 return (error);
199 }
200
201 /*
202 * ISO88025 encapsulation
203 */
204 int
iso88025_output(struct ifnet * ifp,struct mbuf * m,const struct sockaddr * dst,struct route * ro)205 iso88025_output(struct ifnet *ifp, struct mbuf *m, const struct sockaddr *dst,
206 struct route *ro)
207 {
208 u_int16_t snap_type = 0;
209 int loop_copy = 0, error = 0, rif_len = 0;
210 u_char edst[ISO88025_ADDR_LEN];
211 struct iso88025_header *th;
212 struct iso88025_header gen_th;
213 struct sockaddr_dl *sdl = NULL;
214 struct rtentry *rt0 = NULL;
215 int is_gw = 0;
216
217 if (ro != NULL)
218 is_gw = (ro->ro_flags & RT_HAS_GW) != 0;
219 #ifdef MAC
220 error = mac_ifnet_check_transmit(ifp, m);
221 if (error)
222 senderr(error);
223 #endif
224
225 if (ifp->if_flags & IFF_MONITOR)
226 senderr(ENETDOWN);
227 if (!((ifp->if_flags & IFF_UP) &&
228 (ifp->if_drv_flags & IFF_DRV_RUNNING)))
229 senderr(ENETDOWN);
230 getmicrotime(&ifp->if_lastchange);
231
232 /* Calculate routing info length based on arp table entry */
233 /* XXX any better way to do this ? */
234
235 if (rt0 && (sdl = (struct sockaddr_dl *)rt0->rt_gateway))
236 if (SDL_ISO88025(sdl)->trld_rcf != 0)
237 rif_len = TR_RCF_RIFLEN(SDL_ISO88025(sdl)->trld_rcf);
238
239 /* Generate a generic 802.5 header for the packet */
240 gen_th.ac = TR_AC;
241 gen_th.fc = TR_LLC_FRAME;
242 (void)memcpy((caddr_t)gen_th.iso88025_shost, IF_LLADDR(ifp),
243 ISO88025_ADDR_LEN);
244 if (rif_len) {
245 gen_th.iso88025_shost[0] |= TR_RII;
246 if (rif_len > 2) {
247 gen_th.rcf = SDL_ISO88025(sdl)->trld_rcf;
248 (void)memcpy((caddr_t)gen_th.rd,
249 (caddr_t)SDL_ISO88025(sdl)->trld_route,
250 rif_len - 2);
251 }
252 }
253
254 switch (dst->sa_family) {
255 #ifdef INET
256 case AF_INET:
257 error = arpresolve(ifp, is_gw, m, dst, edst, NULL);
258 if (error)
259 return (error == EWOULDBLOCK ? 0 : error);
260 snap_type = ETHERTYPE_IP;
261 break;
262 case AF_ARP:
263 {
264 struct arphdr *ah;
265 ah = mtod(m, struct arphdr *);
266 ah->ar_hrd = htons(ARPHRD_IEEE802);
267
268 loop_copy = -1; /* if this is for us, don't do it */
269
270 switch(ntohs(ah->ar_op)) {
271 case ARPOP_REVREQUEST:
272 case ARPOP_REVREPLY:
273 snap_type = ETHERTYPE_REVARP;
274 break;
275 case ARPOP_REQUEST:
276 case ARPOP_REPLY:
277 default:
278 snap_type = ETHERTYPE_ARP;
279 break;
280 }
281
282 if (m->m_flags & M_BCAST)
283 bcopy(ifp->if_broadcastaddr, edst, ISO88025_ADDR_LEN);
284 else
285 bcopy(ar_tha(ah), edst, ISO88025_ADDR_LEN);
286
287 }
288 break;
289 #endif /* INET */
290 #ifdef INET6
291 case AF_INET6:
292 error = nd6_resolve(ifp, is_gw, m, dst, edst, NULL);
293 if (error)
294 return (error == EWOULDBLOCK ? 0 : error);
295 snap_type = ETHERTYPE_IPV6;
296 break;
297 #endif /* INET6 */
298 case AF_UNSPEC:
299 {
300 const struct iso88025_sockaddr_data *sd;
301 /*
302 * For AF_UNSPEC sockaddr.sa_data must contain all of the
303 * mac information needed to send the packet. This allows
304 * full mac, llc, and source routing function to be controlled.
305 * llc and source routing information must already be in the
306 * mbuf provided, ac/fc are set in sa_data. sockaddr.sa_data
307 * should be an iso88025_sockaddr_data structure see iso88025.h
308 */
309 loop_copy = -1;
310 sd = (const struct iso88025_sockaddr_data *)dst->sa_data;
311 gen_th.ac = sd->ac;
312 gen_th.fc = sd->fc;
313 (void)memcpy(edst, sd->ether_dhost, ISO88025_ADDR_LEN);
314 (void)memcpy(gen_th.iso88025_shost, sd->ether_shost,
315 ISO88025_ADDR_LEN);
316 rif_len = 0;
317 break;
318 }
319 default:
320 if_printf(ifp, "can't handle af%d\n", dst->sa_family);
321 senderr(EAFNOSUPPORT);
322 break;
323 }
324
325 /*
326 * Add LLC header.
327 */
328 if (snap_type != 0) {
329 struct llc *l;
330 M_PREPEND(m, LLC_SNAPFRAMELEN, M_NOWAIT);
331 if (m == 0)
332 senderr(ENOBUFS);
333 l = mtod(m, struct llc *);
334 l->llc_control = LLC_UI;
335 l->llc_dsap = l->llc_ssap = LLC_SNAP_LSAP;
336 l->llc_snap.org_code[0] =
337 l->llc_snap.org_code[1] =
338 l->llc_snap.org_code[2] = 0;
339 l->llc_snap.ether_type = htons(snap_type);
340 }
341
342 /*
343 * Add local net header. If no space in first mbuf,
344 * allocate another.
345 */
346 M_PREPEND(m, ISO88025_HDR_LEN + rif_len, M_NOWAIT);
347 if (m == 0)
348 senderr(ENOBUFS);
349 th = mtod(m, struct iso88025_header *);
350 bcopy((caddr_t)edst, (caddr_t)&gen_th.iso88025_dhost, ISO88025_ADDR_LEN);
351
352 /* Copy as much of the generic header as is needed into the mbuf */
353 memcpy(th, &gen_th, ISO88025_HDR_LEN + rif_len);
354
355 /*
356 * If a simplex interface, and the packet is being sent to our
357 * Ethernet address or a broadcast address, loopback a copy.
358 * XXX To make a simplex device behave exactly like a duplex
359 * device, we should copy in the case of sending to our own
360 * ethernet address (thus letting the original actually appear
361 * on the wire). However, we don't do that here for security
362 * reasons and compatibility with the original behavior.
363 */
364 if ((ifp->if_flags & IFF_SIMPLEX) && (loop_copy != -1)) {
365 if ((m->m_flags & M_BCAST) || (loop_copy > 0)) {
366 struct mbuf *n;
367 n = m_copy(m, 0, (int)M_COPYALL);
368 (void) if_simloop(ifp, n, dst->sa_family,
369 ISO88025_HDR_LEN);
370 } else if (bcmp(th->iso88025_dhost, th->iso88025_shost,
371 ETHER_ADDR_LEN) == 0) {
372 (void) if_simloop(ifp, m, dst->sa_family,
373 ISO88025_HDR_LEN);
374 return(0); /* XXX */
375 }
376 }
377
378 IFQ_HANDOFF_ADJ(ifp, m, ISO88025_HDR_LEN + LLC_SNAPFRAMELEN, error);
379 if (error) {
380 printf("iso88025_output: packet dropped QFULL.\n");
381 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
382 }
383 return (error);
384
385 bad:
386 if_inc_counter(ifp, IFCOUNTER_OERRORS, 1);
387 if (m)
388 m_freem(m);
389 return (error);
390 }
391
392 /*
393 * ISO 88025 de-encapsulation
394 */
395 void
iso88025_input(ifp,m)396 iso88025_input(ifp, m)
397 struct ifnet *ifp;
398 struct mbuf *m;
399 {
400 struct iso88025_header *th;
401 struct llc *l;
402 int isr;
403 int mac_hdr_len;
404
405 /*
406 * Do consistency checks to verify assumptions
407 * made by code past this point.
408 */
409 if ((m->m_flags & M_PKTHDR) == 0) {
410 if_printf(ifp, "discard frame w/o packet header\n");
411 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
412 m_freem(m);
413 return;
414 }
415 if (m->m_pkthdr.rcvif == NULL) {
416 if_printf(ifp, "discard frame w/o interface pointer\n");
417 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
418 m_freem(m);
419 return;
420 }
421
422 m = m_pullup(m, ISO88025_HDR_LEN);
423 if (m == NULL) {
424 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
425 goto dropanyway;
426 }
427 th = mtod(m, struct iso88025_header *);
428
429 /*
430 * Discard packet if interface is not up.
431 */
432 if (!((ifp->if_flags & IFF_UP) &&
433 (ifp->if_drv_flags & IFF_DRV_RUNNING)))
434 goto dropanyway;
435
436 /*
437 * Give bpf a chance at the packet.
438 */
439 BPF_MTAP(ifp, m);
440
441 /*
442 * Interface marked for monitoring; discard packet.
443 */
444 if (ifp->if_flags & IFF_MONITOR) {
445 m_freem(m);
446 return;
447 }
448
449 #ifdef MAC
450 mac_ifnet_create_mbuf(ifp, m);
451 #endif
452
453 /*
454 * Update interface statistics.
455 */
456 if_inc_counter(ifp, IFCOUNTER_IBYTES, m->m_pkthdr.len);
457 getmicrotime(&ifp->if_lastchange);
458
459 /*
460 * Discard non local unicast packets when interface
461 * is in promiscuous mode.
462 */
463 if ((ifp->if_flags & IFF_PROMISC) &&
464 ((th->iso88025_dhost[0] & 1) == 0) &&
465 (bcmp(IF_LLADDR(ifp), (caddr_t) th->iso88025_dhost,
466 ISO88025_ADDR_LEN) != 0))
467 goto dropanyway;
468
469 /*
470 * Set mbuf flags for bcast/mcast.
471 */
472 if (th->iso88025_dhost[0] & 1) {
473 if (bcmp(iso88025_broadcastaddr, th->iso88025_dhost,
474 ISO88025_ADDR_LEN) == 0)
475 m->m_flags |= M_BCAST;
476 else
477 m->m_flags |= M_MCAST;
478 if_inc_counter(ifp, IFCOUNTER_IMCASTS, 1);
479 }
480
481 mac_hdr_len = ISO88025_HDR_LEN;
482 /* Check for source routing info */
483 if (th->iso88025_shost[0] & TR_RII)
484 mac_hdr_len += TR_RCF_RIFLEN(th->rcf);
485
486 /* Strip off ISO88025 header. */
487 m_adj(m, mac_hdr_len);
488
489 m = m_pullup(m, LLC_SNAPFRAMELEN);
490 if (m == 0) {
491 if_inc_counter(ifp, IFCOUNTER_IERRORS, 1);
492 goto dropanyway;
493 }
494 l = mtod(m, struct llc *);
495
496 switch (l->llc_dsap) {
497 case LLC_SNAP_LSAP: {
498 u_int16_t type;
499 if ((l->llc_control != LLC_UI) ||
500 (l->llc_ssap != LLC_SNAP_LSAP)) {
501 if_inc_counter(ifp, IFCOUNTER_NOPROTO, 1);
502 goto dropanyway;
503 }
504
505 if (l->llc_snap.org_code[0] != 0 ||
506 l->llc_snap.org_code[1] != 0 ||
507 l->llc_snap.org_code[2] != 0) {
508 if_inc_counter(ifp, IFCOUNTER_NOPROTO, 1);
509 goto dropanyway;
510 }
511
512 type = ntohs(l->llc_snap.ether_type);
513 m_adj(m, LLC_SNAPFRAMELEN);
514 switch (type) {
515 #ifdef INET
516 case ETHERTYPE_IP:
517 th->iso88025_shost[0] &= ~(TR_RII);
518 isr = NETISR_IP;
519 break;
520
521 case ETHERTYPE_ARP:
522 if (ifp->if_flags & IFF_NOARP)
523 goto dropanyway;
524 isr = NETISR_ARP;
525 break;
526 #endif /* INET */
527 #ifdef INET6
528 case ETHERTYPE_IPV6:
529 th->iso88025_shost[0] &= ~(TR_RII);
530 isr = NETISR_IPV6;
531 break;
532 #endif /* INET6 */
533 default:
534 printf("iso88025_input: unexpected llc_snap ether_type 0x%02x\n", type);
535 if_inc_counter(ifp, IFCOUNTER_NOPROTO, 1);
536 goto dropanyway;
537 }
538 break;
539 }
540 #ifdef ISO
541 case LLC_ISO_LSAP:
542 switch (l->llc_control) {
543 case LLC_UI:
544 if_inc_counter(ifp, IFCOUNTER_NOPROTO, 1);
545 goto dropanyway;
546 break;
547 case LLC_XID:
548 case LLC_XID_P:
549 if(m->m_len < ISO88025_ADDR_LEN)
550 goto dropanyway;
551 l->llc_window = 0;
552 l->llc_fid = 9;
553 l->llc_class = 1;
554 l->llc_dsap = l->llc_ssap = 0;
555 /* Fall through to */
556 case LLC_TEST:
557 case LLC_TEST_P:
558 {
559 struct sockaddr sa;
560 struct iso88025_sockaddr_data *th2;
561 int i;
562 u_char c;
563
564 c = l->llc_dsap;
565
566 if (th->iso88025_shost[0] & TR_RII) { /* XXX */
567 printf("iso88025_input: dropping source routed LLC_TEST\n");
568 goto dropanyway;
569 }
570 l->llc_dsap = l->llc_ssap;
571 l->llc_ssap = c;
572 if (m->m_flags & (M_BCAST | M_MCAST))
573 bcopy((caddr_t)IF_LLADDR(ifp),
574 (caddr_t)th->iso88025_dhost,
575 ISO88025_ADDR_LEN);
576 sa.sa_family = AF_UNSPEC;
577 sa.sa_len = sizeof(sa);
578 th2 = (struct iso88025_sockaddr_data *)sa.sa_data;
579 for (i = 0; i < ISO88025_ADDR_LEN; i++) {
580 th2->ether_shost[i] = c = th->iso88025_dhost[i];
581 th2->ether_dhost[i] = th->iso88025_dhost[i] =
582 th->iso88025_shost[i];
583 th->iso88025_shost[i] = c;
584 }
585 th2->ac = TR_AC;
586 th2->fc = TR_LLC_FRAME;
587 ifp->if_output(ifp, m, &sa, NULL);
588 return;
589 }
590 default:
591 printf("iso88025_input: unexpected llc control 0x%02x\n", l->llc_control);
592 if_inc_counter(ifp, IFCOUNTER_NOPROTO, 1);
593 goto dropanyway;
594 break;
595 }
596 break;
597 #endif /* ISO */
598 default:
599 printf("iso88025_input: unknown dsap 0x%x\n", l->llc_dsap);
600 if_inc_counter(ifp, IFCOUNTER_NOPROTO, 1);
601 goto dropanyway;
602 break;
603 }
604
605 M_SETFIB(m, ifp->if_fib);
606 netisr_dispatch(isr, m);
607 return;
608
609 dropanyway:
610 if_inc_counter(ifp, IFCOUNTER_IQDROPS, 1);
611 if (m)
612 m_freem(m);
613 return;
614 }
615
616 static int
iso88025_resolvemulti(ifp,llsa,sa)617 iso88025_resolvemulti (ifp, llsa, sa)
618 struct ifnet *ifp;
619 struct sockaddr **llsa;
620 struct sockaddr *sa;
621 {
622 struct sockaddr_dl *sdl;
623 #ifdef INET
624 struct sockaddr_in *sin;
625 #endif
626 #ifdef INET6
627 struct sockaddr_in6 *sin6;
628 #endif
629 u_char *e_addr;
630
631 switch(sa->sa_family) {
632 case AF_LINK:
633 /*
634 * No mapping needed. Just check that it's a valid MC address.
635 */
636 sdl = (struct sockaddr_dl *)sa;
637 e_addr = LLADDR(sdl);
638 if ((e_addr[0] & 1) != 1) {
639 return (EADDRNOTAVAIL);
640 }
641 *llsa = 0;
642 return (0);
643
644 #ifdef INET
645 case AF_INET:
646 sin = (struct sockaddr_in *)sa;
647 if (!IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) {
648 return (EADDRNOTAVAIL);
649 }
650 sdl = link_init_sdl(ifp, *llsa, IFT_ISO88025);
651 sdl->sdl_alen = ISO88025_ADDR_LEN;
652 e_addr = LLADDR(sdl);
653 ETHER_MAP_IP_MULTICAST(&sin->sin_addr, e_addr);
654 *llsa = (struct sockaddr *)sdl;
655 return (0);
656 #endif
657 #ifdef INET6
658 case AF_INET6:
659 sin6 = (struct sockaddr_in6 *)sa;
660 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
661 /*
662 * An IP6 address of 0 means listen to all
663 * of the Ethernet multicast address used for IP6.
664 * (This is used for multicast routers.)
665 */
666 ifp->if_flags |= IFF_ALLMULTI;
667 *llsa = 0;
668 return (0);
669 }
670 if (!IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) {
671 return (EADDRNOTAVAIL);
672 }
673 sdl = link_init_sdl(ifp, *llsa, IFT_ISO88025);
674 sdl->sdl_alen = ISO88025_ADDR_LEN;
675 e_addr = LLADDR(sdl);
676 ETHER_MAP_IPV6_MULTICAST(&sin6->sin6_addr, e_addr);
677 *llsa = (struct sockaddr *)sdl;
678 return (0);
679 #endif
680
681 default:
682 /*
683 * Well, the text isn't quite right, but it's the name
684 * that counts...
685 */
686 return (EAFNOSUPPORT);
687 }
688
689 return (0);
690 }
691
692 static moduledata_t iso88025_mod = {
693 .name = "iso88025",
694 };
695
696 DECLARE_MODULE(iso88025, iso88025_mod, SI_SUB_PSEUDO, SI_ORDER_ANY);
697 MODULE_VERSION(iso88025, 1);
698