__P() removal
[dragonfly.git] / sys / net / if_fddisubr.c
CommitLineData
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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: src/sys/net/if_fddisubr.c,v 1.41.2.8 2002/02/20 23:34:09 fjoe Exp $
158abb01 37 * $DragonFly: src/sys/net/Attic/if_fddisubr.c,v 1.5 2003/08/26 20:49:47 rob Exp $
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38 */
39
40#include "opt_atalk.h"
41#include "opt_inet.h"
42#include "opt_inet6.h"
43#include "opt_ipx.h"
44
45#include <sys/param.h>
46#include <sys/systm.h>
47#include <sys/mbuf.h>
48#include <sys/socket.h>
49#include <sys/malloc.h>
50
51#include <net/if.h>
52#include <net/netisr.h>
53#include <net/route.h>
54#include <net/if_llc.h>
55#include <net/if_dl.h>
56#include <net/if_types.h>
57
58#if defined(INET) || defined(INET6)
59#include <netinet/in.h>
60#include <netinet/in_var.h>
61#include <netinet/if_ether.h>
62#endif
63#ifdef INET6
64#include <netinet6/nd6.h>
65#endif
66#if defined(__FreeBSD__)
67#include <netinet/if_fddi.h>
68#else
69#include <net/if_fddi.h>
70#endif
71
72#ifdef IPX
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73#include <netproto/ipx/ipx.h>
74#include <netproto/ipx/ipx_if.h>
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75#endif
76
77#ifdef NS
78#include <netns/ns.h>
79#include <netns/ns_if.h>
80#endif
81
82#ifdef DECNET
83#include <netdnet/dn.h>
84#endif
85
86#ifdef NETATALK
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87#include <netproto/atalk/at.h>
88#include <netproto/atalk/at_var.h>
89#include <netproto/atalk/at_extern.h>
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90
91#define llc_snap_org_code llc_un.type_snap.org_code
92#define llc_snap_ether_type llc_un.type_snap.ether_type
93
94extern u_char at_org_code[ 3 ];
95extern u_char aarp_org_code[ 3 ];
96#endif /* NETATALK */
97
158abb01
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98static int fddi_resolvemulti (struct ifnet *, struct sockaddr **,
99 struct sockaddr *);
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100
101#define senderr(e) { error = (e); goto bad;}
102
103/*
104 * This really should be defined in if_llc.h but in case it isn't.
105 */
106#ifndef llc_snap
107#define llc_snap llc_un.type_snap
108#endif
109
110#if defined(__bsdi__) || defined(__NetBSD__)
111#define RTALLOC1(a, b) rtalloc1(a, b)
112#define ARPRESOLVE(a, b, c, d, e, f) arpresolve(a, b, c, d, e)
113#elif defined(__FreeBSD__)
114#define RTALLOC1(a, b) rtalloc1(a, b, 0UL)
115#define ARPRESOLVE(a, b, c, d, e, f) arpresolve(a, b, c, d, e, f)
116#endif
117/*
118 * FDDI output routine.
119 * Encapsulate a packet of type family for the local net.
120 * Use trailer local net encapsulation if enough data in first
121 * packet leaves a multiple of 512 bytes of data in remainder.
122 * Assumes that ifp is actually pointer to arpcom structure.
123 */
124int
125fddi_output(ifp, m, dst, rt0)
82ed7fc2 126 struct ifnet *ifp;
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127 struct mbuf *m;
128 struct sockaddr *dst;
129 struct rtentry *rt0;
130{
131 u_int16_t type;
132 int s, loop_copy = 0, error = 0, hdrcmplt = 0;
133 u_char esrc[6], edst[6];
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134 struct rtentry *rt;
135 struct fddi_header *fh;
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136 struct arpcom *ac = (struct arpcom *)ifp;
137
138 if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING))
139 senderr(ENETDOWN);
140 getmicrotime(&ifp->if_lastchange);
141#if !defined(__bsdi__) || _BSDI_VERSION >= 199401
142 if ((rt = rt0) != NULL) {
143 if ((rt->rt_flags & RTF_UP) == 0) {
144 if ((rt0 = rt = RTALLOC1(dst, 1)) != NULL)
145 rt->rt_refcnt--;
146 else
147 senderr(EHOSTUNREACH);
148 }
149 if (rt->rt_flags & RTF_GATEWAY) {
150 if (rt->rt_gwroute == 0)
151 goto lookup;
152 if (((rt = rt->rt_gwroute)->rt_flags & RTF_UP) == 0) {
153 rtfree(rt); rt = rt0;
154 lookup: rt->rt_gwroute = RTALLOC1(rt->rt_gateway, 1);
155 if ((rt = rt->rt_gwroute) == 0)
156 senderr(EHOSTUNREACH);
157 }
158 }
159 if (rt->rt_flags & RTF_REJECT)
160 if (rt->rt_rmx.rmx_expire == 0 ||
161 time_second < rt->rt_rmx.rmx_expire)
162 senderr(rt == rt0 ? EHOSTDOWN : EHOSTUNREACH);
163 }
164#endif
165 switch (dst->sa_family) {
166
167#ifdef INET
168 case AF_INET: {
169#if !defined(__bsdi__) || _BSDI_VERSION >= 199401
170 if (!ARPRESOLVE(ifp, rt, m, dst, edst, rt0))
171 return (0); /* if not yet resolved */
172#else
173 int usetrailers;
174 if (!arpresolve(ac, m, &((struct sockaddr_in *)dst)->sin_addr, edst, &usetrailers))
175 return (0); /* if not yet resolved */
176#endif
177 type = htons(ETHERTYPE_IP);
178 break;
179 }
180#endif
181#ifdef INET6
182 case AF_INET6:
183 if (!nd6_storelladdr(&ac->ac_if, rt, m, dst, (u_char *)edst)) {
184 /* Something bad happened */
185 return(0);
186 }
187 type = htons(ETHERTYPE_IPV6);
188 break;
189#endif
190#ifdef IPX
191 case AF_IPX:
192 type = htons(ETHERTYPE_IPX);
193 bcopy((caddr_t)&(((struct sockaddr_ipx *)dst)->sipx_addr.x_host),
194 (caddr_t)edst, sizeof (edst));
195 break;
196#endif
197#ifdef NETATALK
198 case AF_APPLETALK: {
199 struct at_ifaddr *aa;
200 if (!aarpresolve(ac, m, (struct sockaddr_at *)dst, edst))
201 return (0);
202 /*
203 * ifaddr is the first thing in at_ifaddr
204 */
205 if ((aa = at_ifawithnet( (struct sockaddr_at *)dst)) == 0)
206 goto bad;
207
208 /*
209 * In the phase 2 case, we need to prepend an mbuf for the llc header.
210 * Since we must preserve the value of m, which is passed to us by
211 * value, we m_copy() the first mbuf, and use it for our llc header.
212 */
213 if (aa->aa_flags & AFA_PHASE2) {
214 struct llc llc;
215
216 M_PREPEND(m, sizeof(struct llc), M_WAIT);
217 if (m == 0)
218 senderr(ENOBUFS);
219 llc.llc_dsap = llc.llc_ssap = LLC_SNAP_LSAP;
220 llc.llc_control = LLC_UI;
221 bcopy(at_org_code, llc.llc_snap_org_code, sizeof(at_org_code));
222 llc.llc_snap_ether_type = htons(ETHERTYPE_AT);
223 bcopy(&llc, mtod(m, caddr_t), sizeof(struct llc));
224 type = 0;
225 } else {
226 type = htons(ETHERTYPE_AT);
227 }
228 break;
229 }
230#endif /* NETATALK */
231#ifdef NS
232 case AF_NS:
233 type = htons(ETHERTYPE_NS);
234 bcopy((caddr_t)&(((struct sockaddr_ns *)dst)->sns_addr.x_host),
235 (caddr_t)edst, sizeof (edst));
236 break;
237#endif
238
239 case pseudo_AF_HDRCMPLT:
240 {
241 struct ether_header *eh;
242 hdrcmplt = 1;
243 eh = (struct ether_header *)dst->sa_data;
244 (void)memcpy((caddr_t)esrc, (caddr_t)eh->ether_shost, sizeof (esrc));
245 /* FALLTHROUGH */
246 }
247
248 case AF_UNSPEC:
249 {
250 struct ether_header *eh;
251 loop_copy = -1;
252 eh = (struct ether_header *)dst->sa_data;
253 (void)memcpy((caddr_t)edst, (caddr_t)eh->ether_dhost, sizeof (edst));
254 if (*edst & 1)
255 m->m_flags |= (M_BCAST|M_MCAST);
256 type = eh->ether_type;
257 break;
258 }
259
260 case AF_IMPLINK:
261 {
262 fh = mtod(m, struct fddi_header *);
263 error = EPROTONOSUPPORT;
264 switch (fh->fddi_fc & (FDDIFC_C|FDDIFC_L|FDDIFC_F)) {
265 case FDDIFC_LLC_ASYNC: {
266 /* legal priorities are 0 through 7 */
267 if ((fh->fddi_fc & FDDIFC_Z) > 7)
268 goto bad;
269 break;
270 }
271 case FDDIFC_LLC_SYNC: {
272 /* FDDIFC_Z bits reserved, must be zero */
273 if (fh->fddi_fc & FDDIFC_Z)
274 goto bad;
275 break;
276 }
277 case FDDIFC_SMT: {
278 /* FDDIFC_Z bits must be non zero */
279 if ((fh->fddi_fc & FDDIFC_Z) == 0)
280 goto bad;
281 break;
282 }
283 default: {
284 /* anything else is too dangerous */
285 goto bad;
286 }
287 }
288 error = 0;
289 if (fh->fddi_dhost[0] & 1)
290 m->m_flags |= (M_BCAST|M_MCAST);
291 goto queue_it;
292 }
293 default:
294 printf("%s%d: can't handle af%d\n", ifp->if_name, ifp->if_unit,
295 dst->sa_family);
296 senderr(EAFNOSUPPORT);
297 }
298
299 if (type != 0) {
82ed7fc2 300 struct llc *l;
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301 M_PREPEND(m, sizeof (struct llc), M_DONTWAIT);
302 if (m == 0)
303 senderr(ENOBUFS);
304 l = mtod(m, struct llc *);
305 l->llc_control = LLC_UI;
306 l->llc_dsap = l->llc_ssap = LLC_SNAP_LSAP;
307 l->llc_snap.org_code[0] = l->llc_snap.org_code[1] = l->llc_snap.org_code[2] = 0;
308 (void)memcpy((caddr_t) &l->llc_snap.ether_type, (caddr_t) &type,
309 sizeof(u_int16_t));
310 }
311
312 /*
313 * Add local net header. If no space in first mbuf,
314 * allocate another.
315 */
316 M_PREPEND(m, sizeof (struct fddi_header), M_DONTWAIT);
317 if (m == 0)
318 senderr(ENOBUFS);
319 fh = mtod(m, struct fddi_header *);
320 fh->fddi_fc = FDDIFC_LLC_ASYNC|FDDIFC_LLC_PRIO4;
321 (void)memcpy((caddr_t)fh->fddi_dhost, (caddr_t)edst, sizeof (edst));
322 queue_it:
323 if (hdrcmplt)
324 (void)memcpy((caddr_t)fh->fddi_shost, (caddr_t)esrc,
325 sizeof(fh->fddi_shost));
326 else
327 (void)memcpy((caddr_t)fh->fddi_shost, (caddr_t)ac->ac_enaddr,
328 sizeof(fh->fddi_shost));
329 /*
330 * If a simplex interface, and the packet is being sent to our
331 * Ethernet address or a broadcast address, loopback a copy.
332 * XXX To make a simplex device behave exactly like a duplex
333 * device, we should copy in the case of sending to our own
334 * ethernet address (thus letting the original actually appear
335 * on the wire). However, we don't do that here for security
336 * reasons and compatibility with the original behavior.
337 */
338 if ((ifp->if_flags & IFF_SIMPLEX) &&
339 (loop_copy != -1)) {
340 if ((m->m_flags & M_BCAST) || loop_copy) {
341 struct mbuf *n = m_copy(m, 0, (int)M_COPYALL);
342
343 (void) if_simloop(ifp,
344 n, dst->sa_family, sizeof(struct fddi_header));
345 } else if (bcmp(fh->fddi_dhost,
346 fh->fddi_shost, sizeof(fh->fddi_shost)) == 0) {
347 (void) if_simloop(ifp,
348 m, dst->sa_family, sizeof(struct fddi_header));
349 return(0); /* XXX */
350 }
351 }
352
353 s = splimp();
354 /*
355 * Queue message on interface, and start output if interface
356 * not yet active.
357 */
358 if (IF_QFULL(&ifp->if_snd)) {
359 IF_DROP(&ifp->if_snd);
360 splx(s);
361 senderr(ENOBUFS);
362 }
363 ifp->if_obytes += m->m_pkthdr.len;
364 if (m->m_flags & M_MCAST)
365 ifp->if_omcasts++;
366 IF_ENQUEUE(&ifp->if_snd, m);
367 if ((ifp->if_flags & IFF_OACTIVE) == 0)
368 (*ifp->if_start)(ifp);
369 splx(s);
370 return (error);
371
372bad:
373 if (m)
374 m_freem(m);
375 return (error);
376}
377
378/*
379 * Process a received FDDI packet;
380 * the packet is in the mbuf chain m without
381 * the fddi header, which is provided separately.
382 */
383void
384fddi_input(ifp, fh, m)
385 struct ifnet *ifp;
82ed7fc2 386 struct fddi_header *fh;
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387 struct mbuf *m;
388{
82ed7fc2
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389 struct ifqueue *inq;
390 struct llc *l;
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391 int s;
392
393 if ((ifp->if_flags & IFF_UP) == 0) {
394 m_freem(m);
395 return;
396 }
397 getmicrotime(&ifp->if_lastchange);
398 ifp->if_ibytes += m->m_pkthdr.len + sizeof (*fh);
399 if (fh->fddi_dhost[0] & 1) {
400 if (bcmp((caddr_t)fddibroadcastaddr, (caddr_t)fh->fddi_dhost,
401 sizeof(fddibroadcastaddr)) == 0)
402 m->m_flags |= M_BCAST;
403 else
404 m->m_flags |= M_MCAST;
405 ifp->if_imcasts++;
406 } else if ((ifp->if_flags & IFF_PROMISC)
407 && bcmp(((struct arpcom *)ifp)->ac_enaddr, (caddr_t)fh->fddi_dhost,
408 sizeof(fh->fddi_dhost)) != 0) {
409 m_freem(m);
410 return;
411 }
412
413#ifdef M_LINK0
414 /*
415 * If this has a LLC priority of 0, then mark it so upper
416 * layers have a hint that it really came via a FDDI/Ethernet
417 * bridge.
418 */
419 if ((fh->fddi_fc & FDDIFC_LLC_PRIO7) == FDDIFC_LLC_PRIO0)
420 m->m_flags |= M_LINK0;
421#endif
422
423 l = mtod(m, struct llc *);
424 switch (l->llc_dsap) {
425#if defined(INET) || defined(INET6) || defined(NS) || defined(DECNET) || defined(IPX) || defined(NETATALK)
426 case LLC_SNAP_LSAP:
427 {
428 u_int16_t type;
429 if (l->llc_control != LLC_UI || l->llc_ssap != LLC_SNAP_LSAP)
430 goto dropanyway;
431#ifdef NETATALK
432 if (Bcmp(&(l->llc_snap_org_code)[0], at_org_code,
433 sizeof(at_org_code)) == 0 &&
434 ntohs(l->llc_snap_ether_type) == ETHERTYPE_AT) {
435 inq = &atintrq2;
436 m_adj( m, sizeof( struct llc ));
437 schednetisr(NETISR_ATALK);
438 break;
439 }
440
441 if (Bcmp(&(l->llc_snap_org_code)[0], aarp_org_code,
442 sizeof(aarp_org_code)) == 0 &&
443 ntohs(l->llc_snap_ether_type) == ETHERTYPE_AARP) {
444 m_adj( m, sizeof( struct llc ));
445 aarpinput((struct arpcom *)ifp, m); /* XXX */
446 return;
447 }
448#endif /* NETATALK */
449 if (l->llc_snap.org_code[0] != 0 || l->llc_snap.org_code[1] != 0|| l->llc_snap.org_code[2] != 0)
450 goto dropanyway;
451 type = ntohs(l->llc_snap.ether_type);
452 m_adj(m, 8);
453 switch (type) {
454#ifdef INET
455 case ETHERTYPE_IP:
456 if (ipflow_fastforward(m))
457 return;
458 schednetisr(NETISR_IP);
459 inq = &ipintrq;
460 break;
461
462 case ETHERTYPE_ARP:
463 if (ifp->if_flags & IFF_NOARP)
464 goto dropanyway;
465 schednetisr(NETISR_ARP);
466 inq = &arpintrq;
467 break;
468#endif
469#ifdef INET6
470 case ETHERTYPE_IPV6:
471 schednetisr(NETISR_IPV6);
472 inq = &ip6intrq;
473 break;
474#endif
475#ifdef IPX
476 case ETHERTYPE_IPX:
477 schednetisr(NETISR_IPX);
478 inq = &ipxintrq;
479 break;
480#endif
481#ifdef NS
482 case ETHERTYPE_NS:
483 schednetisr(NETISR_NS);
484 inq = &nsintrq;
485 break;
486#endif
487#ifdef DECNET
488 case ETHERTYPE_DECNET:
489 schednetisr(NETISR_DECNET);
490 inq = &decnetintrq;
491 break;
492#endif
493#ifdef NETATALK
494 case ETHERTYPE_AT:
495 schednetisr(NETISR_ATALK);
496 inq = &atintrq1;
497 break;
498 case ETHERTYPE_AARP:
499 /* probably this should be done with a NETISR as well */
500 aarpinput((struct arpcom *)ifp, m); /* XXX */
501 return;
502#endif /* NETATALK */
503 default:
504 /* printf("fddi_input: unknown protocol 0x%x\n", type); */
505 ifp->if_noproto++;
506 goto dropanyway;
507 }
508 break;
509 }
510#endif /* INET || NS */
511
512 default:
513 /* printf("fddi_input: unknown dsap 0x%x\n", l->llc_dsap); */
514 ifp->if_noproto++;
515 dropanyway:
516 m_freem(m);
517 return;
518 }
519
520 s = splimp();
521 if (IF_QFULL(inq)) {
522 IF_DROP(inq);
523 m_freem(m);
524 } else
525 IF_ENQUEUE(inq, m);
526 splx(s);
527}
528/*
529 * Perform common duties while attaching to interface list
530 */
531#ifdef __NetBSD__
532#define ifa_next ifa_list.tqe_next
533#endif
534
535void
536fddi_ifattach(ifp)
82ed7fc2 537 struct ifnet *ifp;
984263bc 538{
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539 struct ifaddr *ifa;
540 struct sockaddr_dl *sdl;
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541
542 ifp->if_type = IFT_FDDI;
543 ifp->if_addrlen = 6;
544 ifp->if_hdrlen = 21;
545 ifp->if_mtu = FDDIMTU;
546 ifp->if_resolvemulti = fddi_resolvemulti;
547 ifp->if_baudrate = 100000000;
548#ifdef IFF_NOTRAILERS
549 ifp->if_flags |= IFF_NOTRAILERS;
550#endif
551#if defined(__FreeBSD__)
552 ifa = ifnet_addrs[ifp->if_index - 1];
553 sdl = (struct sockaddr_dl *)ifa->ifa_addr;
554 sdl->sdl_type = IFT_FDDI;
555 sdl->sdl_alen = ifp->if_addrlen;
556 bcopy(((struct arpcom *)ifp)->ac_enaddr, LLADDR(sdl), ifp->if_addrlen);
557#elif defined(__NetBSD__)
558 LIST_INIT(&((struct arpcom *)ifp)->ac_multiaddrs);
559 for (ifa = ifp->if_addrlist.tqh_first; ifa != NULL; ifa = ifa->ifa_list.tqe_next)
560#else
561 for (ifa = ifp->if_addrlist; ifa != NULL; ifa = ifa->ifa_next)
562#endif
563#if !defined(__FreeBSD__)
564 if ((sdl = (struct sockaddr_dl *)ifa->ifa_addr) &&
565 sdl->sdl_family == AF_LINK) {
566 sdl->sdl_type = IFT_FDDI;
567 sdl->sdl_alen = ifp->if_addrlen;
568 bcopy((caddr_t)((struct arpcom *)ifp)->ac_enaddr,
569 LLADDR(sdl), ifp->if_addrlen);
570 break;
571 }
572#endif
573}
574
575static int
576fddi_resolvemulti(ifp, llsa, sa)
577 struct ifnet *ifp;
578 struct sockaddr **llsa;
579 struct sockaddr *sa;
580{
581 struct sockaddr_dl *sdl;
582 struct sockaddr_in *sin;
583#ifdef INET6
584 struct sockaddr_in6 *sin6;
585#endif
586 u_char *e_addr;
587
588 switch(sa->sa_family) {
589 case AF_LINK:
590 /*
591 * No mapping needed. Just check that it's a valid MC address.
592 */
593 sdl = (struct sockaddr_dl *)sa;
594 e_addr = LLADDR(sdl);
595 if ((e_addr[0] & 1) != 1)
596 return EADDRNOTAVAIL;
597 *llsa = 0;
598 return 0;
599
600#ifdef INET
601 case AF_INET:
602 sin = (struct sockaddr_in *)sa;
603 if (!IN_MULTICAST(ntohl(sin->sin_addr.s_addr)))
604 return EADDRNOTAVAIL;
605 MALLOC(sdl, struct sockaddr_dl *, sizeof *sdl, M_IFMADDR,
606 M_WAITOK);
607 sdl->sdl_len = sizeof *sdl;
608 sdl->sdl_family = AF_LINK;
609 sdl->sdl_index = ifp->if_index;
610 sdl->sdl_type = IFT_FDDI;
611 sdl->sdl_nlen = 0;
612 sdl->sdl_alen = ETHER_ADDR_LEN; /* XXX */
613 sdl->sdl_slen = 0;
614 e_addr = LLADDR(sdl);
615 ETHER_MAP_IP_MULTICAST(&sin->sin_addr, e_addr);
616 *llsa = (struct sockaddr *)sdl;
617 return 0;
618#endif
619#ifdef INET6
620 case AF_INET6:
621 sin6 = (struct sockaddr_in6 *)sa;
622 if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
623 /*
624 * An IP6 address of 0 means listen to all
625 * of the Ethernet multicast address used for IP6.
626 * (This is used for multicast routers.)
627 */
628 ifp->if_flags |= IFF_ALLMULTI;
629 *llsa = 0;
630 return 0;
631 }
632 if (!IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr))
633 return EADDRNOTAVAIL;
634 MALLOC(sdl, struct sockaddr_dl *, sizeof *sdl, M_IFMADDR,
635 M_WAITOK);
636 sdl->sdl_len = sizeof *sdl;
637 sdl->sdl_family = AF_LINK;
638 sdl->sdl_index = ifp->if_index;
639 sdl->sdl_type = IFT_FDDI;
640 sdl->sdl_nlen = 0;
641 sdl->sdl_alen = ETHER_ADDR_LEN; /* XXX */
642 sdl->sdl_slen = 0;
643 e_addr = LLADDR(sdl);
644 ETHER_MAP_IPV6_MULTICAST(&sin6->sin6_addr, e_addr);
645 *llsa = (struct sockaddr *)sdl;
646 return 0;
647#endif
648
649 default:
650 /*
651 * Well, the text isn't quite right, but it's the name
652 * that counts...
653 */
654 return EAFNOSUPPORT;
655 }
656}