bsd/net/if_fddisubr.c

   1 /*
   2  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  * Copyright (c) 1995, 1996
  27  *      Matt Thomas <matt@3am-software.com>.  All rights reserved.
  28  * Copyright (c) 1982, 1989, 1993
  29  *      The Regents of the University of California.  All rights reserved.
  30  *
  31  * Redistribution and use in source and binary forms, with or without
  32  * modification, are permitted provided that the following conditions
  33  * are met:
  34  * 1. Redistributions of source code must retain the above copyright
  35  *    notice, this list of conditions and the following disclaimer.
  36  * 2. Redistributions in binary form must reproduce the above copyright
  37  *    notice, this list of conditions and the following disclaimer in the
  38  *    documentation and/or other materials provided with the distribution.
  39  * 3. All advertising materials mentioning features or use of this software
  40  *    must display the following acknowledgement:
  41  *      This product includes software developed by the University of
  42  *      California, Berkeley and its contributors.
  43  * 4. Neither the name of the University nor the names of its contributors
  44  *    may be used to endorse or promote products derived from this software
  45  *    without specific prior written permission.
  46  *
  47  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  48  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  49  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  50  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  51  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  52  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  53  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  54  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  55  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  56  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  57  * SUCH DAMAGE.
  58  *
  59  *      from: if_ethersubr.c,v 1.5 1994/12/13 22:31:45 wollman Exp
  60  */
  61
  62 #include "opt_atalk.h"
  63 #include "opt_inet.h"
  64 #include "opt_ipx.h"
  65
  66 #include <sys/param.h>
  67 #include <sys/systm.h>
  68 #include <sys/mbuf.h>
  69 #include <sys/socket.h>
  70
  71 #include <net/if.h>
  72 #include <net/netisr.h>
  73 #include <net/route.h>
  74 #include <net/if_llc.h>
  75 #include <net/if_dl.h>
  76 #include <net/if_types.h>
  77
  78 #if INET
  79 #include <netinet/in.h>
  80 #include <netinet/in_var.h>
  81 #include <netinet/if_ether.h>
  82 #endif
  83 #if defined(__FreeBSD__)
  84 #include <netinet/if_fddi.h>
  85 #else
  86 #include <net/if_fddi.h>
  87 #endif
  88
  89 #if IPX
  90 #include <netipx/ipx.h>
  91 #include <netipx/ipx_if.h>
  92 #endif
  93
  94 #if DECNET
  95 #include <netdnet/dn.h>
  96 #endif
  97
  98 #include "bpfilter.h"
  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  */
 123 int
 124 fddi_output(ifp, m0, dst, rt0)
 125         register struct ifnet *ifp;
 126         struct mbuf *m0;
 127         struct sockaddr *dst;
 128         struct rtentry *rt0;
 129 {
 130         u_int16_t type;
 131         int s, loop_copy = 0, error = 0;
 132         u_char edst[6];
 133         register struct mbuf *m = m0;
 134         register struct rtentry *rt;
 135         register struct fddi_header *fh;
 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) {
 143                 if ((rt->rt_flags & RTF_UP) == 0) {
 144                         if (rt0 = rt = RTALLOC1(dst, 1))
 145                                 rtunref(rt);
 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 #if INET
 168         case AF_INET: {
 169 #if !defined(__bsdi__) || _BSDI_VERSION >= 199401
 170                 if (!ARPRESOLVE(ac, 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 #if IPX
 182         case AF_IPX:
 183                 type = htons(ETHERTYPE_IPX);
 184                 bcopy((caddr_t)&(((struct sockaddr_ipx *)dst)->sipx_addr.x_host),
 185                     (caddr_t)edst, sizeof (edst));
 186                 break;
 187 #endif
 188
 189 #if NS
 190         case AF_NS:
 191                 type = htons(ETHERTYPE_NS);
 192                 bcopy((caddr_t)&(((struct sockaddr_ns *)dst)->sns_addr.x_host),
 193                     (caddr_t)edst, sizeof (edst));
 194                 break;
 195 #endif
 196 #if     ISO
 197         case AF_ISO: {
 198                 int     snpalen;
 199                 struct  llc *l;
 200                 register struct sockaddr_dl *sdl;
 201
 202                 if (rt && (sdl = (struct sockaddr_dl *)rt->rt_gateway) &&
 203                     sdl->sdl_family == AF_LINK && sdl->sdl_alen > 0) {
 204                         bcopy(LLADDR(sdl), (caddr_t)edst, sizeof(edst));
 205                 } else if (error =
 206                             iso_snparesolve(ifp, (struct sockaddr_iso *)dst,
 207                                             (char *)edst, &snpalen))
 208                         goto bad; /* Not Resolved */
 209                 /* If broadcasting on a simplex interface, loopback a copy */
 210                 if (*edst & 1)
 211                         m->m_flags |= (M_BCAST|M_MCAST);
 212                 M_PREPEND(m, 3, M_DONTWAIT);
 213                 if (m == NULL)
 214                         return (0);
 215                 type = 0;
 216                 l = mtod(m, struct llc *);
 217                 l->llc_dsap = l->llc_ssap = LLC_ISO_LSAP;
 218                 l->llc_control = LLC_UI;
 219                 IFDEBUG(D_ETHER)
 220                         int i;
 221                         printf("unoutput: sending pkt to: ");
 222                         for (i=0; i<6; i++)
 223                                 printf("%x ", edst[i] & 0xff);
 224                         printf("\n");
 225                 ENDDEBUG
 226                 } break;
 227 #endif /* ISO */
 228 #if     LLC
 229 /*      case AF_NSAP: */
 230         case AF_CCITT: {
 231                 register struct sockaddr_dl *sdl =
 232                         (struct sockaddr_dl *) rt -> rt_gateway;
 233
 234                 if (sdl && sdl->sdl_family != AF_LINK && sdl->sdl_alen <= 0)
 235                         goto bad; /* Not a link interface ? Funny ... */
 236                 bcopy(LLADDR(sdl), (char *)edst, sizeof(edst));
 237                 if (*edst & 1)
 238                         loop_copy = 1;
 239                 type = 0;
 240 #if LLC_DEBUG
 241                 {
 242                         int i;
 243                         register struct llc *l = mtod(m, struct llc *);
 244
 245                         printf("fddi_output: sending LLC2 pkt to: ");
 246                         for (i=0; i<6; i++)
 247                                 printf("%x ", edst[i] & 0xff);
 248                         printf(" len 0x%x dsap 0x%x ssap 0x%x control 0x%x\n",
 249                                type & 0xff, l->llc_dsap & 0xff, l->llc_ssap &0xff,
 250                                l->llc_control & 0xff);
 251
 252                 }
 253 #endif /* LLC_DEBUG */
 254                 } break;
 255 #endif /* LLC */
 256
 257         case AF_UNSPEC:
 258         {
 259                 struct ether_header *eh;
 260                 loop_copy = -1;
 261                 eh = (struct ether_header *)dst->sa_data;
 262                 (void)memcpy((caddr_t)edst, (caddr_t)eh->ether_dhost, sizeof (edst));
 263                 if (*edst & 1)
 264                         m->m_flags |= (M_BCAST|M_MCAST);
 265                 type = eh->ether_type;
 266                 break;
 267         }
 268
 269 #if NBPFILTER > 0
 270         case AF_IMPLINK:
 271         {
 272                 fh = mtod(m, struct fddi_header *);
 273                 error = EPROTONOSUPPORT;
 274                 switch (fh->fddi_fc & (FDDIFC_C|FDDIFC_L|FDDIFC_F)) {
 275                         case FDDIFC_LLC_ASYNC: {
 276                                 /* legal priorities are 0 through 7 */
 277                                 if ((fh->fddi_fc & FDDIFC_Z) > 7)
 278                                         goto bad;
 279                                 break;
 280                         }
 281                         case FDDIFC_LLC_SYNC: {
 282                                 /* FDDIFC_Z bits reserved, must be zero */
 283                                 if (fh->fddi_fc & FDDIFC_Z)
 284                                         goto bad;
 285                                 break;
 286                         }
 287                         case FDDIFC_SMT: {
 288                                 /* FDDIFC_Z bits must be non zero */
 289                                 if ((fh->fddi_fc & FDDIFC_Z) == 0)
 290                                         goto bad;
 291                                 break;
 292                         }
 293                         default: {
 294                                 /* anything else is too dangerous */
 295                                 goto bad;
 296                         }
 297                 }
 298                 error = 0;
 299                 if (fh->fddi_dhost[0] & 1)
 300                         m->m_flags |= (M_BCAST|M_MCAST);
 301                 goto queue_it;
 302         }
 303 #endif
 304         default:
 305                 printf("%s%d: can't handle af%d\n", ifp->if_name, ifp->if_unit,
 306                         dst->sa_family);
 307                 senderr(EAFNOSUPPORT);
 308         }
 309
 310         if (type != 0) {
 311                 register struct llc *l;
 312                 M_PREPEND(m, sizeof (struct llc), M_DONTWAIT);
 313                 if (m == 0)
 314                         senderr(ENOBUFS);
 315                 l = mtod(m, struct llc *);
 316                 l->llc_control = LLC_UI;
 317                 l->llc_dsap = l->llc_ssap = LLC_SNAP_LSAP;
 318                 l->llc_snap.org_code[0] = l->llc_snap.org_code[1] = l->llc_snap.org_code[2] = 0;
 319                 (void)memcpy((caddr_t) &l->llc_snap.ether_type, (caddr_t) &type,
 320                         sizeof(u_int16_t));
 321         }
 322
 323         /*
 324          * Add local net header.  If no space in first mbuf,
 325          * allocate another.
 326          */
 327         M_PREPEND(m, sizeof (struct fddi_header), M_DONTWAIT);
 328         if (m == 0)
 329                 senderr(ENOBUFS);
 330         fh = mtod(m, struct fddi_header *);
 331         fh->fddi_fc = FDDIFC_LLC_ASYNC|FDDIFC_LLC_PRIO4;
 332         (void)memcpy((caddr_t)fh->fddi_dhost, (caddr_t)edst, sizeof (edst));
 333   queue_it:
 334         (void)memcpy((caddr_t)fh->fddi_shost, (caddr_t)ac->ac_enaddr,
 335             sizeof(fh->fddi_shost));
 336
 337         /*
 338          * If a simplex interface, and the packet is being sent to our
 339          * Ethernet address or a broadcast address, loopback a copy.
 340          * XXX To make a simplex device behave exactly like a duplex
 341          * device, we should copy in the case of sending to our own
 342          * ethernet address (thus letting the original actually appear
 343          * on the wire). However, we don't do that here for security
 344          * reasons and compatibility with the original behavior.
 345          */
 346         if ((ifp->if_flags & IFF_SIMPLEX) &&
 347            (loop_copy != -1)) {
 348                 if ((m->m_flags & M_BCAST) || loop_copy) {
 349                         struct mbuf *n = m_copy(m, 0, (int)M_COPYALL);
 350
 351                         (void) if_simloop(ifp,
 352                                 n, dst, sizeof(struct fddi_header));
 353                 } else if (bcmp(fh->fddi_dhost,
 354                     fh->fddi_shost, sizeof(fh->fddi_shost)) == 0) {
 355                         (void) if_simloop(ifp,
 356                                 m, dst, sizeof(struct fddi_header));
 357                         return(0);      /* XXX */
 358                 }
 359         }
 360
 361         s = splimp();
 362         /*
 363          * Queue message on interface, and start output if interface
 364          * not yet active.
 365          */
 366         if (IF_QFULL(&ifp->if_snd)) {
 367                 IF_DROP(&ifp->if_snd);
 368                 splx(s);
 369                 senderr(ENOBUFS);
 370         }
 371         ifp->if_obytes += m->m_pkthdr.len;
 372         IF_ENQUEUE(&ifp->if_snd, m);
 373         if ((ifp->if_flags & IFF_OACTIVE) == 0)
 374                 (*ifp->if_start)(ifp);
 375         splx(s);
 376         if (m->m_flags & M_MCAST)
 377                 ifp->if_omcasts++;
 378         return (error);
 379
 380 bad:
 381         if (m)
 382                 m_freem(m);
 383         return (error);
 384 }
 385
 386 /*
 387  * Process a received FDDI packet;
 388  * the packet is in the mbuf chain m without
 389  * the fddi header, which is provided separately.
 390  */
 391 void
 392 fddi_input(ifp, fh, m)
 393         struct ifnet *ifp;
 394         register struct fddi_header *fh;
 395         struct mbuf *m;
 396 {
 397         register struct ifqueue *inq;
 398         register struct llc *l;
 399         int s;
 400
 401         if ((ifp->if_flags & IFF_UP) == 0) {
 402                 m_freem(m);
 403                 return;
 404         }
 405         getmicrotime(&ifp->if_lastchange);
 406         ifp->if_ibytes += m->m_pkthdr.len + sizeof (*fh);
 407         if (fh->fddi_dhost[0] & 1) {
 408                 if (bcmp((caddr_t)fddibroadcastaddr, (caddr_t)fh->fddi_dhost,
 409                     sizeof(fddibroadcastaddr)) == 0)
 410                         m->m_flags |= M_BCAST;
 411                 else
 412                         m->m_flags |= M_MCAST;
 413                 ifp->if_imcasts++;
 414         } else if ((ifp->if_flags & IFF_PROMISC)
 415             && bcmp(((struct arpcom *)ifp)->ac_enaddr, (caddr_t)fh->fddi_dhost,
 416                     sizeof(fh->fddi_dhost)) != 0) {
 417                 m_freem(m);
 418                 return;
 419         }
 420
 421 #ifdef M_LINK0
 422         /*
 423          * If this has a LLC priority of 0, then mark it so upper
 424          * layers have a hint that it really came via a FDDI/Ethernet
 425          * bridge.
 426          */
 427         if ((fh->fddi_fc & FDDIFC_LLC_PRIO7) == FDDIFC_LLC_PRIO0)
 428                 m->m_flags |= M_LINK0;
 429 #endif
 430
 431         l = mtod(m, struct llc *);
 432         switch (l->llc_dsap) {
 433 #if defined(INET) || NS || IPX || defined(NETATALK)
 434         case LLC_SNAP_LSAP:
 435         {
 436                 u_int16_t type;
 437                 if (l->llc_control != LLC_UI || l->llc_ssap != LLC_SNAP_LSAP)
 438                         goto dropanyway;
 439
 440                 if (l->llc_snap.org_code[0] != 0 || l->llc_snap.org_code[1] != 0|| l->llc_snap.org_code[2] != 0)
 441                         goto dropanyway;
 442                 type = ntohs(l->llc_snap.ether_type);
 443                 m_adj(m, 8);
 444                 switch (type) {
 445 #if 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 !defined(__bsdi__) || _BSDI_VERSION >= 199401
 455                         schednetisr(NETISR_ARP);
 456                         inq = &arpintrq;
 457                         break;
 458 #else
 459                         arpinput((struct arpcom *)ifp, m);
 460                         return;
 461 #endif
 462 #endif
 463 #if IPX
 464                 case ETHERTYPE_IPX:
 465                         schednetisr(NETISR_IPX);
 466                         inq = &ipxintrq;
 467                         break;
 468 #endif
 469 #if NS
 470                 case ETHERTYPE_NS:
 471                         schednetisr(NETISR_NS);
 472                         inq = &nsintrq;
 473                         break;
 474 #endif
 475 #if DECNET
 476                 case ETHERTYPE_DECNET:
 477                         schednetisr(NETISR_DECNET);
 478                         inq = &decnetintrq;
 479                         break;
 480 #endif
 481
 482                 default:
 483                         /* printf("fddi_input: unknown protocol 0x%x\n", type); */
 484                         ifp->if_noproto++;
 485                         goto dropanyway;
 486                 }
 487                 break;
 488         }
 489 #endif /* INET || NS */
 490 #if     ISO
 491         case LLC_ISO_LSAP:
 492                 switch (l->llc_control) {
 493                 case LLC_UI:
 494                         /* LLC_UI_P forbidden in class 1 service */
 495                         if ((l->llc_dsap == LLC_ISO_LSAP) &&
 496                             (l->llc_ssap == LLC_ISO_LSAP)) {
 497                                 /* LSAP for ISO */
 498                                 m->m_data += 3;         /* XXX */
 499                                 m->m_len -= 3;          /* XXX */
 500                                 m->m_pkthdr.len -= 3;   /* XXX */
 501                                 M_PREPEND(m, sizeof *fh, M_DONTWAIT);
 502                                 if (m == 0)
 503                                         return;
 504                                 *mtod(m, struct fddi_header *) = *fh;
 505                                 IFDEBUG(D_ETHER)
 506                                         printf("clnp packet");
 507                                 ENDDEBUG
 508                                 schednetisr(NETISR_ISO);
 509                                 inq = &clnlintrq;
 510                                 break;
 511                         }
 512                         goto dropanyway;
 513
 514                 case LLC_XID:
 515                 case LLC_XID_P:
 516                         if(m->m_len < 6)
 517                                 goto dropanyway;
 518                         l->llc_window = 0;
 519                         l->llc_fid = 9;
 520                         l->llc_class = 1;
 521                         l->llc_dsap = l->llc_ssap = 0;
 522                         /* Fall through to */
 523                 case LLC_TEST:
 524                 case LLC_TEST_P:
 525                 {
 526                         struct sockaddr sa;
 527                         register struct ether_header *eh;
 528                         struct arpcom *ac = (struct arpcom *) ifp;
 529                         int i;
 530                         u_char c = l->llc_dsap;
 531
 532                         l->llc_dsap = l->llc_ssap;
 533                         l->llc_ssap = c;
 534                         if (m->m_flags & (M_BCAST | M_MCAST))
 535                                 bcopy((caddr_t)ac->ac_enaddr,
 536                                       (caddr_t)eh->ether_dhost, 6);
 537                         sa.sa_family = AF_UNSPEC;
 538                         sa.sa_len = sizeof(sa);
 539                         eh = (struct ether_header *)sa.sa_data;
 540                         for (i = 0; i < 6; i++) {
 541                                 eh->ether_shost[i] = fh->fddi_dhost[i];
 542                                 eh->ether_dhost[i] = fh->fddi_shost[i];
 543                         }
 544                         eh->ether_type = 0;
 545                         ifp->if_output(ifp, m, &sa, NULL);
 546                         return;
 547                 }
 548                 default:
 549                         m_freem(m);
 550                         return;
 551                 }
 552                 break;
 553 #endif /* ISO */
 554 #if LLC
 555         case LLC_X25_LSAP:
 556         {
 557                 M_PREPEND(m, sizeof(struct sdl_hdr) , M_DONTWAIT);
 558                 if (m == 0)
 559                         return;
 560                 if ( !sdl_sethdrif(ifp, fh->fddi_shost, LLC_X25_LSAP,
 561                                     fh->fddi_dhost, LLC_X25_LSAP, 6,
 562                                     mtod(m, struct sdl_hdr *)))
 563                         panic("ETHER cons addr failure");
 564                 mtod(m, struct sdl_hdr *)->sdlhdr_len = m->m_pkthdr.len - sizeof(struct sdl_hdr);
 565 #if LLC_DEBUG
 566                 printf("llc packet\n");
 567 #endif /* LLC_DEBUG */
 568                 schednetisr(NETISR_CCITT);
 569                 inq = &llcintrq;
 570                 break;
 571         }
 572 #endif /* LLC */
 573
 574         default:
 575                 /* printf("fddi_input: unknown dsap 0x%x\n", l->llc_dsap); */
 576                 ifp->if_noproto++;
 577         dropanyway:
 578                 m_freem(m);
 579                 return;
 580         }
 581
 582         s = splimp();
 583         if (IF_QFULL(inq)) {
 584                 IF_DROP(inq);
 585                 m_freem(m);
 586         } else
 587                 IF_ENQUEUE(inq, m);
 588         splx(s);
 589 }
 590 /*
 591  * Perform common duties while attaching to interface list
 592  */
 593 #ifdef __NetBSD__
 594 #define ifa_next        ifa_list.tqe_next
 595 #endif
 596
 597 void
 598 fddi_ifattach(ifp)
 599         register struct ifnet *ifp;
 600 {
 601         register struct ifaddr *ifa;
 602         register struct sockaddr_dl *sdl;
 603
 604         ifp->if_type = IFT_FDDI;
 605         ifp->if_addrlen = 6;
 606         ifp->if_hdrlen = 21;
 607         ifp->if_mtu = FDDIMTU;
 608         ifp->if_baudrate = 100000000;
 609 #if IFF_NOTRAILERS
 610         ifp->if_flags |= IFF_NOTRAILERS;
 611 #endif
 612 #if defined(__FreeBSD__)
 613         ifa = ifnet_addrs[ifp->if_index - 1];
 614         sdl = (struct sockaddr_dl *)ifa->ifa_addr;
 615         sdl->sdl_type = IFT_FDDI;
 616         sdl->sdl_alen = ifp->if_addrlen;
 617         bcopy(((struct arpcom *)ifp)->ac_enaddr, LLADDR(sdl), ifp->if_addrlen);
 618 #elif defined(__NetBSD__)
 619         LIST_INIT(&((struct arpcom *)ifp)->ac_multiaddrs);
 620         for (ifa = ifp->if_addrlist.tqh_first; ifa != NULL; ifa = ifa->ifa_list.tqe_next)
 621 #else
 622         for (ifa = ifp->if_addrlist; ifa != NULL; ifa = ifa->ifa_next)
 623 #endif
 624 #if !defined(__FreeBSD__)
 625                 if ((sdl = (struct sockaddr_dl *)ifa->ifa_addr) &&
 626                     sdl->sdl_family == AF_LINK) {
 627                         sdl->sdl_type = IFT_FDDI;
 628                         sdl->sdl_alen = ifp->if_addrlen;
 629                         bcopy((caddr_t)((struct arpcom *)ifp)->ac_enaddr,
 630                               LLADDR(sdl), ifp->if_addrlen);
 631                         break;
 632                 }
 633 #endif
 634 }