if_fddisubr.c revision 36265
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 * $Id: if_fddisubr.c,v 1.29 1998/05/20 14:08:43 dufault Exp $ 37 */ 38 39#include "opt_atalk.h" 40#include "opt_inet.h" 41#include "opt_ipx.h" 42 43#include <sys/param.h> 44#include <sys/systm.h> 45#include <sys/kernel.h> 46#include <sys/mbuf.h> 47#include <sys/socket.h> 48 49#include <net/if.h> 50#include <net/netisr.h> 51#include <net/route.h> 52#include <net/if_llc.h> 53#include <net/if_dl.h> 54#include <net/if_types.h> 55 56#ifdef INET 57#include <netinet/in.h> 58#include <netinet/in_var.h> 59#include <netinet/if_ether.h> 60#endif 61#if defined(__FreeBSD__) 62#include <netinet/if_fddi.h> 63#else 64#include <net/if_fddi.h> 65#endif 66 67#ifdef IPX 68#include <netipx/ipx.h> 69#include <netipx/ipx_if.h> 70#endif 71 72#ifdef NS 73#include <netns/ns.h> 74#include <netns/ns_if.h> 75#endif 76 77#ifdef DECNET 78#include <netdnet/dn.h> 79#endif 80 81#ifdef ISO 82#include <netiso/argo_debug.h> 83#include <netiso/iso.h> 84#include <netiso/iso_var.h> 85#include <netiso/iso_snpac.h> 86#endif 87 88#ifdef LLC 89#include <netccitt/dll.h> 90#include <netccitt/llc_var.h> 91#endif 92 93#ifdef NETATALK 94#include <netatalk/at.h> 95#include <netatalk/at_var.h> 96#include <netatalk/at_extern.h> 97 98#define llc_snap_org_code llc_un.type_snap.org_code 99#define llc_snap_ether_type llc_un.type_snap.ether_type 100 101extern u_char at_org_code[ 3 ]; 102extern u_char aarp_org_code[ 3 ]; 103#endif /* NETATALK */ 104 105#if defined(LLC) && defined(CCITT) 106extern struct ifqueue pkintrq; 107#endif 108 109#include "bpfilter.h" 110 111#define senderr(e) { error = (e); goto bad;} 112 113/* 114 * This really should be defined in if_llc.h but in case it isn't. 115 */ 116#ifndef llc_snap 117#define llc_snap llc_un.type_snap 118#endif 119 120#if defined(__bsdi__) || defined(__NetBSD__) 121#define RTALLOC1(a, b) rtalloc1(a, b) 122#define ARPRESOLVE(a, b, c, d, e, f) arpresolve(a, b, c, d, e) 123#elif defined(__FreeBSD__) 124#define RTALLOC1(a, b) rtalloc1(a, b, 0UL) 125#define ARPRESOLVE(a, b, c, d, e, f) arpresolve(a, b, c, d, e, f) 126#endif 127/* 128 * FDDI output routine. 129 * Encapsulate a packet of type family for the local net. 130 * Use trailer local net encapsulation if enough data in first 131 * packet leaves a multiple of 512 bytes of data in remainder. 132 * Assumes that ifp is actually pointer to arpcom structure. 133 */ 134int 135fddi_output(ifp, m0, dst, rt0) 136 register struct ifnet *ifp; 137 struct mbuf *m0; 138 struct sockaddr *dst; 139 struct rtentry *rt0; 140{ 141 u_int16_t type; 142 int s, error = 0; 143 u_char edst[6]; 144 register struct mbuf *m = m0; 145 register struct rtentry *rt; 146 register struct fddi_header *fh; 147 struct mbuf *mcopy = (struct mbuf *)0; 148 struct arpcom *ac = (struct arpcom *)ifp; 149 150 if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING)) 151 senderr(ENETDOWN); 152 getmicrotime(&ifp->if_lastchange); 153#if !defined(__bsdi__) || _BSDI_VERSION >= 199401 154 if (rt = rt0) { 155 if ((rt->rt_flags & RTF_UP) == 0) { 156 if (rt0 = rt = RTALLOC1(dst, 1)) 157 rt->rt_refcnt--; 158 else 159 senderr(EHOSTUNREACH); 160 } 161 if (rt->rt_flags & RTF_GATEWAY) { 162 if (rt->rt_gwroute == 0) 163 goto lookup; 164 if (((rt = rt->rt_gwroute)->rt_flags & RTF_UP) == 0) { 165 rtfree(rt); rt = rt0; 166 lookup: rt->rt_gwroute = RTALLOC1(rt->rt_gateway, 1); 167 if ((rt = rt->rt_gwroute) == 0) 168 senderr(EHOSTUNREACH); 169 } 170 } 171 if (rt->rt_flags & RTF_REJECT) 172 if (rt->rt_rmx.rmx_expire == 0 || 173 time_second < rt->rt_rmx.rmx_expire) 174 senderr(rt == rt0 ? EHOSTDOWN : EHOSTUNREACH); 175 } 176#endif 177 switch (dst->sa_family) { 178 179#ifdef INET 180 case AF_INET: { 181#if !defined(__bsdi__) || _BSDI_VERSION >= 199401 182 if (!ARPRESOLVE(ac, rt, m, dst, edst, rt0)) 183 return (0); /* if not yet resolved */ 184#else 185 int usetrailers; 186 if (!arpresolve(ac, m, &((struct sockaddr_in *)dst)->sin_addr, edst, &usetrailers)) 187 return (0); /* if not yet resolved */ 188#endif 189 /* If broadcasting on a simplex interface, loopback a copy */ 190 if ((m->m_flags & M_BCAST) && (ifp->if_flags & IFF_SIMPLEX)) 191 mcopy = m_copy(m, 0, (int)M_COPYALL); 192 type = htons(ETHERTYPE_IP); 193 break; 194 } 195#endif 196#ifdef IPX 197 case AF_IPX: 198 { 199 struct ifaddr *ia; 200 201 type = htons(ETHERTYPE_IPX); 202 bcopy((caddr_t)&(((struct sockaddr_ipx *)dst)->sipx_addr.x_host), 203 (caddr_t)edst, sizeof (edst)); 204 205 for(ia = ifp->if_addrhead.tqh_first; ia != 0; 206 ia = ia->ifa_link.tqe_next) { 207 if(ia->ifa_addr->sa_family == AF_IPX && 208 !bcmp((caddr_t)edst, 209 (caddr_t)&((struct ipx_ifaddr *)ia)->ia_addr.sipx_addr.x_host, 210 sizeof(edst)) ) 211 return (looutput(ifp, m, dst, rt)); 212 } 213 214 /* If broadcasting on a simplex interface, loopback a copy */ 215 if ((m->m_flags & M_BCAST) && (ifp->if_flags & IFF_SIMPLEX)) 216 mcopy = m_copy(m, 0, (int)M_COPYALL); 217 break; 218 } 219#endif 220#ifdef NETATALK 221 case AF_APPLETALK: { 222 struct at_ifaddr *aa; 223 if (!aarpresolve(ac, m, (struct sockaddr_at *)dst, edst)) { 224#ifdef NETATALKDEBUG 225 extern char *prsockaddr(struct sockaddr *); 226 printf("aarpresolv: failed for %s\n", prsockaddr(dst)); 227#endif 228 return (0); 229 } 230 /* 231 * ifaddr is the first thing in at_ifaddr 232 */ 233 if ((aa = at_ifawithnet( (struct sockaddr_at *)dst)) == 0) 234 goto bad; 235 236 /* 237 * In the phase 2 case, we need to prepend an mbuf for the llc header. 238 * Since we must preserve the value of m, which is passed to us by 239 * value, we m_copy() the first mbuf, and use it for our llc header. 240 */ 241 if (aa->aa_flags & AFA_PHASE2) { 242 struct llc llc; 243 244 M_PREPEND(m, sizeof(struct llc), M_WAIT); 245 if (m == 0) 246 senderr(ENOBUFS); 247 llc.llc_dsap = llc.llc_ssap = LLC_SNAP_LSAP; 248 llc.llc_control = LLC_UI; 249 bcopy(at_org_code, llc.llc_snap_org_code, sizeof(at_org_code)); 250 llc.llc_snap_ether_type = htons(ETHERTYPE_AT); 251 bcopy(&llc, mtod(m, caddr_t), sizeof(struct llc)); 252 type = 0; 253 } else { 254 type = htons(ETHERTYPE_AT); 255 } 256 break; 257 } 258#endif /* NETATALK */ 259#ifdef NS 260 case AF_NS: 261 type = htons(ETHERTYPE_NS); 262 bcopy((caddr_t)&(((struct sockaddr_ns *)dst)->sns_addr.x_host), 263 (caddr_t)edst, sizeof (edst)); 264 if (!bcmp((caddr_t)edst, (caddr_t)&ns_thishost, sizeof(edst))) 265 return (looutput(ifp, m, dst, rt)); 266 /* If broadcasting on a simplex interface, loopback a copy */ 267 if ((m->m_flags & M_BCAST) && (ifp->if_flags & IFF_SIMPLEX)) 268 mcopy = m_copy(m, 0, (int)M_COPYALL); 269 break; 270#endif 271#ifdef ISO 272 case AF_ISO: { 273 int snpalen; 274 struct llc *l; 275 register struct sockaddr_dl *sdl; 276 277 if (rt && (sdl = (struct sockaddr_dl *)rt->rt_gateway) && 278 sdl->sdl_family == AF_LINK && sdl->sdl_alen > 0) { 279 bcopy(LLADDR(sdl), (caddr_t)edst, sizeof(edst)); 280 } else if (error = 281 iso_snparesolve(ifp, (struct sockaddr_iso *)dst, 282 (char *)edst, &snpalen)) 283 goto bad; /* Not Resolved */ 284 /* If broadcasting on a simplex interface, loopback a copy */ 285 if (*edst & 1) 286 m->m_flags |= (M_BCAST|M_MCAST); 287 if ((m->m_flags & M_BCAST) && (ifp->if_flags & IFF_SIMPLEX) && 288 (mcopy = m_copy(m, 0, (int)M_COPYALL))) { 289 M_PREPEND(mcopy, sizeof (*fh), M_DONTWAIT); 290 if (mcopy) { 291 fh = mtod(mcopy, struct fddi_header *); 292 bcopy((caddr_t)edst, 293 (caddr_t)fh->fddi_dhost, sizeof (edst)); 294 bcopy((caddr_t)ac->ac_enaddr, 295 (caddr_t)fh->fddi_shost, sizeof (edst)); 296 } 297 } 298 M_PREPEND(m, 3, M_DONTWAIT); 299 if (m == NULL) 300 return (0); 301 type = 0; 302 l = mtod(m, struct llc *); 303 l->llc_dsap = l->llc_ssap = LLC_ISO_LSAP; 304 l->llc_control = LLC_UI; 305 IFDEBUG(D_ETHER) 306 int i; 307 printf("unoutput: sending pkt to: "); 308 for (i=0; i<6; i++) 309 printf("%x ", edst[i] & 0xff); 310 printf("\n"); 311 ENDDEBUG 312 } break; 313#endif /* ISO */ 314#ifdef LLC 315/* case AF_NSAP: */ 316 case AF_CCITT: { 317 register struct sockaddr_dl *sdl = 318 (struct sockaddr_dl *) rt -> rt_gateway; 319 320 if (sdl && sdl->sdl_family != AF_LINK && sdl->sdl_alen <= 0) 321 goto bad; /* Not a link interface ? Funny ... */ 322 bcopy(LLADDR(sdl), (char *)edst, sizeof(edst)); 323 if ((ifp->if_flags & IFF_SIMPLEX) && (*edst & 1) && 324 (mcopy = m_copy(m, 0, (int)M_COPYALL))) { 325 M_PREPEND(mcopy, sizeof (*fh), M_DONTWAIT); 326 if (mcopy) { 327 fh = mtod(mcopy, struct fddi_header *); 328 bcopy((caddr_t)edst, 329 (caddr_t)fh->fddi_dhost, sizeof (edst)); 330 bcopy((caddr_t)ac->ac_enaddr, 331 (caddr_t)fh->fddi_shost, sizeof (edst)); 332 fh->fddi_fc = FDDIFC_LLC_ASYNC|FDDIFC_LLC_PRIO4; 333 } 334 } 335 type = 0; 336#ifdef LLC_DEBUG 337 { 338 int i; 339 register struct llc *l = mtod(m, struct llc *); 340 341 printf("fddi_output: sending LLC2 pkt to: "); 342 for (i=0; i<6; i++) 343 printf("%x ", edst[i] & 0xff); 344 printf(" len 0x%x dsap 0x%x ssap 0x%x control 0x%x\n", 345 type & 0xff, l->llc_dsap & 0xff, l->llc_ssap &0xff, 346 l->llc_control & 0xff); 347 348 } 349#endif /* LLC_DEBUG */ 350 } break; 351#endif /* LLC */ 352 353 case AF_UNSPEC: 354 { 355 struct ether_header *eh; 356 eh = (struct ether_header *)dst->sa_data; 357 (void)memcpy((caddr_t)edst, (caddr_t)eh->ether_dhost, sizeof (edst)); 358 if (*edst & 1) 359 m->m_flags |= (M_BCAST|M_MCAST); 360 type = eh->ether_type; 361 break; 362 } 363 364#if NBPFILTER > 0 365 case AF_IMPLINK: 366 { 367 fh = mtod(m, struct fddi_header *); 368 error = EPROTONOSUPPORT; 369 switch (fh->fddi_fc & (FDDIFC_C|FDDIFC_L|FDDIFC_F)) { 370 case FDDIFC_LLC_ASYNC: { 371 /* legal priorities are 0 through 7 */ 372 if ((fh->fddi_fc & FDDIFC_Z) > 7) 373 goto bad; 374 break; 375 } 376 case FDDIFC_LLC_SYNC: { 377 /* FDDIFC_Z bits reserved, must be zero */ 378 if (fh->fddi_fc & FDDIFC_Z) 379 goto bad; 380 break; 381 } 382 case FDDIFC_SMT: { 383 /* FDDIFC_Z bits must be non zero */ 384 if ((fh->fddi_fc & FDDIFC_Z) == 0) 385 goto bad; 386 break; 387 } 388 default: { 389 /* anything else is too dangerous */ 390 goto bad; 391 } 392 } 393 error = 0; 394 if (fh->fddi_dhost[0] & 1) 395 m->m_flags |= (M_BCAST|M_MCAST); 396 goto queue_it; 397 } 398#endif 399 default: 400 printf("%s%d: can't handle af%d\n", ifp->if_name, ifp->if_unit, 401 dst->sa_family); 402 senderr(EAFNOSUPPORT); 403 } 404 405 406 if (mcopy) 407 (void) looutput(ifp, mcopy, dst, rt); 408 if (type != 0) { 409 register struct llc *l; 410 M_PREPEND(m, sizeof (struct llc), M_DONTWAIT); 411 if (m == 0) 412 senderr(ENOBUFS); 413 l = mtod(m, struct llc *); 414 l->llc_control = LLC_UI; 415 l->llc_dsap = l->llc_ssap = LLC_SNAP_LSAP; 416 l->llc_snap.org_code[0] = l->llc_snap.org_code[1] = l->llc_snap.org_code[2] = 0; 417 (void)memcpy((caddr_t) &l->llc_snap.ether_type, (caddr_t) &type, 418 sizeof(u_int16_t)); 419 } 420 /* 421 * Add local net header. If no space in first mbuf, 422 * allocate another. 423 */ 424 M_PREPEND(m, sizeof (struct fddi_header), M_DONTWAIT); 425 if (m == 0) 426 senderr(ENOBUFS); 427 fh = mtod(m, struct fddi_header *); 428 fh->fddi_fc = FDDIFC_LLC_ASYNC|FDDIFC_LLC_PRIO4; 429 (void)memcpy((caddr_t)fh->fddi_dhost, (caddr_t)edst, sizeof (edst)); 430 queue_it: 431 (void)memcpy((caddr_t)fh->fddi_shost, (caddr_t)ac->ac_enaddr, 432 sizeof(fh->fddi_shost)); 433 s = splimp(); 434 /* 435 * Queue message on interface, and start output if interface 436 * not yet active. 437 */ 438 if (IF_QFULL(&ifp->if_snd)) { 439 IF_DROP(&ifp->if_snd); 440 splx(s); 441 senderr(ENOBUFS); 442 } 443 ifp->if_obytes += m->m_pkthdr.len; 444 IF_ENQUEUE(&ifp->if_snd, m); 445 if ((ifp->if_flags & IFF_OACTIVE) == 0) 446 (*ifp->if_start)(ifp); 447 splx(s); 448 if (m->m_flags & M_MCAST) 449 ifp->if_omcasts++; 450 return (error); 451 452bad: 453 if (m) 454 m_freem(m); 455 return (error); 456} 457 458/* 459 * Process a received FDDI packet; 460 * the packet is in the mbuf chain m without 461 * the fddi header, which is provided separately. 462 */ 463void 464fddi_input(ifp, fh, m) 465 struct ifnet *ifp; 466 register struct fddi_header *fh; 467 struct mbuf *m; 468{ 469 register struct ifqueue *inq; 470 register struct llc *l; 471 int s; 472 473 if ((ifp->if_flags & IFF_UP) == 0) { 474 m_freem(m); 475 return; 476 } 477 getmicrotime(&ifp->if_lastchange); 478 ifp->if_ibytes += m->m_pkthdr.len + sizeof (*fh); 479 if (fh->fddi_dhost[0] & 1) { 480 if (bcmp((caddr_t)fddibroadcastaddr, (caddr_t)fh->fddi_dhost, 481 sizeof(fddibroadcastaddr)) == 0) 482 m->m_flags |= M_BCAST; 483 else 484 m->m_flags |= M_MCAST; 485 ifp->if_imcasts++; 486 } else if ((ifp->if_flags & IFF_PROMISC) 487 && bcmp(((struct arpcom *)ifp)->ac_enaddr, (caddr_t)fh->fddi_dhost, 488 sizeof(fh->fddi_dhost)) != 0) { 489 m_freem(m); 490 return; 491 } 492 493#ifdef M_LINK0 494 /* 495 * If this has a LLC priority of 0, then mark it so upper 496 * layers have a hint that it really came via a FDDI/Ethernet 497 * bridge. 498 */ 499 if ((fh->fddi_fc & FDDIFC_LLC_PRIO7) == FDDIFC_LLC_PRIO0) 500 m->m_flags |= M_LINK0; 501#endif 502 503 l = mtod(m, struct llc *); 504 switch (l->llc_dsap) { 505#if defined(INET) || defined(NS) || defined(DECNET) || defined(IPX) || defined(NETATALK) 506 case LLC_SNAP_LSAP: 507 { 508 u_int16_t type; 509 if (l->llc_control != LLC_UI || l->llc_ssap != LLC_SNAP_LSAP) 510 goto dropanyway; 511#ifdef NETATALK 512 if (Bcmp(&(l->llc_snap_org_code)[0], at_org_code, 513 sizeof(at_org_code)) == 0 && 514 ntohs(l->llc_snap_ether_type) == ETHERTYPE_AT) { 515 inq = &atintrq2; 516 m_adj( m, sizeof( struct llc )); 517 schednetisr(NETISR_ATALK); 518 break; 519 } 520 521 if (Bcmp(&(l->llc_snap_org_code)[0], aarp_org_code, 522 sizeof(aarp_org_code)) == 0 && 523 ntohs(l->llc_snap_ether_type) == ETHERTYPE_AARP) { 524 m_adj( m, sizeof( struct llc )); 525 aarpinput((struct arpcom *)ifp, m); /* XXX */ 526 return; 527 } 528#endif /* NETATALK */ 529 if (l->llc_snap.org_code[0] != 0 || l->llc_snap.org_code[1] != 0|| l->llc_snap.org_code[2] != 0) 530 goto dropanyway; 531 type = ntohs(l->llc_snap.ether_type); 532 m_adj(m, 8); 533 switch (type) { 534#ifdef INET 535 case ETHERTYPE_IP: 536 if (ipflow_fastforward(m)) 537 return; 538 schednetisr(NETISR_IP); 539 inq = &ipintrq; 540 break; 541 542 case ETHERTYPE_ARP: 543#if !defined(__bsdi__) || _BSDI_VERSION >= 199401 544 schednetisr(NETISR_ARP); 545 inq = &arpintrq; 546 break; 547#else 548 arpinput((struct arpcom *)ifp, m); 549 return; 550#endif 551#endif 552#ifdef IPX 553 case ETHERTYPE_IPX: 554 schednetisr(NETISR_IPX); 555 inq = &ipxintrq; 556 break; 557#endif 558#ifdef NS 559 case ETHERTYPE_NS: 560 schednetisr(NETISR_NS); 561 inq = &nsintrq; 562 break; 563#endif 564#ifdef DECNET 565 case ETHERTYPE_DECNET: 566 schednetisr(NETISR_DECNET); 567 inq = &decnetintrq; 568 break; 569#endif 570#ifdef NETATALK 571 case ETHERTYPE_AT: 572 schednetisr(NETISR_ATALK); 573 inq = &atintrq1; 574 break; 575 case ETHERTYPE_AARP: 576 /* probably this should be done with a NETISR as well */ 577 aarpinput((struct arpcom *)ifp, m); /* XXX */ 578 return; 579#endif /* NETATALK */ 580 default: 581 /* printf("fddi_input: unknown protocol 0x%x\n", type); */ 582 ifp->if_noproto++; 583 goto dropanyway; 584 } 585 break; 586 } 587#endif /* INET || NS */ 588#ifdef ISO 589 case LLC_ISO_LSAP: 590 switch (l->llc_control) { 591 case LLC_UI: 592 /* LLC_UI_P forbidden in class 1 service */ 593 if ((l->llc_dsap == LLC_ISO_LSAP) && 594 (l->llc_ssap == LLC_ISO_LSAP)) { 595 /* LSAP for ISO */ 596 m->m_data += 3; /* XXX */ 597 m->m_len -= 3; /* XXX */ 598 m->m_pkthdr.len -= 3; /* XXX */ 599 M_PREPEND(m, sizeof *fh, M_DONTWAIT); 600 if (m == 0) 601 return; 602 *mtod(m, struct fddi_header *) = *fh; 603 IFDEBUG(D_ETHER) 604 printf("clnp packet"); 605 ENDDEBUG 606 schednetisr(NETISR_ISO); 607 inq = &clnlintrq; 608 break; 609 } 610 goto dropanyway; 611 612 case LLC_XID: 613 case LLC_XID_P: 614 if(m->m_len < 6) 615 goto dropanyway; 616 l->llc_window = 0; 617 l->llc_fid = 9; 618 l->llc_class = 1; 619 l->llc_dsap = l->llc_ssap = 0; 620 /* Fall through to */ 621 case LLC_TEST: 622 case LLC_TEST_P: 623 { 624 struct sockaddr sa; 625 register struct ether_header *eh; 626 struct arpcom *ac = (struct arpcom *) ifp; 627 int i; 628 u_char c = l->llc_dsap; 629 630 l->llc_dsap = l->llc_ssap; 631 l->llc_ssap = c; 632 if (m->m_flags & (M_BCAST | M_MCAST)) 633 bcopy((caddr_t)ac->ac_enaddr, 634 (caddr_t)eh->ether_dhost, 6); 635 sa.sa_family = AF_UNSPEC; 636 sa.sa_len = sizeof(sa); 637 eh = (struct ether_header *)sa.sa_data; 638 for (i = 0; i < 6; i++) { 639 eh->ether_shost[i] = fh->fddi_dhost[i]; 640 eh->ether_dhost[i] = fh->fddi_shost[i]; 641 } 642 eh->ether_type = 0; 643 ifp->if_output(ifp, m, &sa, NULL); 644 return; 645 } 646 default: 647 m_freem(m); 648 return; 649 } 650 break; 651#endif /* ISO */ 652#ifdef LLC 653 case LLC_X25_LSAP: 654 { 655 M_PREPEND(m, sizeof(struct sdl_hdr) , M_DONTWAIT); 656 if (m == 0) 657 return; 658 if ( !sdl_sethdrif(ifp, fh->fddi_shost, LLC_X25_LSAP, 659 fh->fddi_dhost, LLC_X25_LSAP, 6, 660 mtod(m, struct sdl_hdr *))) 661 panic("ETHER cons addr failure"); 662 mtod(m, struct sdl_hdr *)->sdlhdr_len = m->m_pkthdr.len - sizeof(struct sdl_hdr); 663#ifdef LLC_DEBUG 664 printf("llc packet\n"); 665#endif /* LLC_DEBUG */ 666 schednetisr(NETISR_CCITT); 667 inq = &llcintrq; 668 break; 669 } 670#endif /* LLC */ 671 672 default: 673 /* printf("fddi_input: unknown dsap 0x%x\n", l->llc_dsap); */ 674 ifp->if_noproto++; 675 dropanyway: 676 m_freem(m); 677 return; 678 } 679 680 s = splimp(); 681 if (IF_QFULL(inq)) { 682 IF_DROP(inq); 683 m_freem(m); 684 } else 685 IF_ENQUEUE(inq, m); 686 splx(s); 687} 688/* 689 * Perform common duties while attaching to interface list 690 */ 691#ifdef __NetBSD__ 692#define ifa_next ifa_list.tqe_next 693#endif 694 695void 696fddi_ifattach(ifp) 697 register struct ifnet *ifp; 698{ 699 register struct ifaddr *ifa; 700 register struct sockaddr_dl *sdl; 701 702 ifp->if_type = IFT_FDDI; 703 ifp->if_addrlen = 6; 704 ifp->if_hdrlen = 21; 705 ifp->if_mtu = FDDIMTU; 706 ifp->if_baudrate = 100000000; 707#ifdef IFF_NOTRAILERS 708 ifp->if_flags |= IFF_NOTRAILERS; 709#endif 710#if defined(__FreeBSD__) 711 ifa = ifnet_addrs[ifp->if_index - 1]; 712 sdl = (struct sockaddr_dl *)ifa->ifa_addr; 713 sdl->sdl_type = IFT_FDDI; 714 sdl->sdl_alen = ifp->if_addrlen; 715 bcopy(((struct arpcom *)ifp)->ac_enaddr, LLADDR(sdl), ifp->if_addrlen); 716#elif defined(__NetBSD__) 717 LIST_INIT(&((struct arpcom *)ifp)->ac_multiaddrs); 718 for (ifa = ifp->if_addrlist.tqh_first; ifa != NULL; ifa = ifa->ifa_list.tqe_next) 719#else 720 for (ifa = ifp->if_addrlist; ifa != NULL; ifa = ifa->ifa_next) 721#endif 722#if !defined(__FreeBSD__) 723 if ((sdl = (struct sockaddr_dl *)ifa->ifa_addr) && 724 sdl->sdl_family == AF_LINK) { 725 sdl->sdl_type = IFT_FDDI; 726 sdl->sdl_alen = ifp->if_addrlen; 727 bcopy((caddr_t)((struct arpcom *)ifp)->ac_enaddr, 728 LLADDR(sdl), ifp->if_addrlen); 729 break; 730 } 731#endif 732} 733