1/* $NetBSD$ */ 2 3/* 4 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 5 * 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. Neither the name of the project nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32/* 33 * Copyright (c) 1982, 1989, 1993 34 * The Regents of the University of California. All rights reserved. 35 * 36 * Redistribution and use in source and binary forms, with or without 37 * modification, are permitted provided that the following conditions 38 * are met: 39 * 1. Redistributions of source code must retain the above copyright 40 * notice, this list of conditions and the following disclaimer. 41 * 2. Redistributions in binary form must reproduce the above copyright 42 * notice, this list of conditions and the following disclaimer in the 43 * documentation and/or other materials provided with the distribution. 44 * 3. Neither the name of the University nor the names of its contributors 45 * may be used to endorse or promote products derived from this software 46 * without specific prior written permission. 47 * 48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 58 * SUCH DAMAGE. 59 * 60 * @(#)if_fddisubr.c 8.1 (Berkeley) 6/10/93 61 * 62 * Id: if_fddisubr.c,v 1.15 1997/03/21 22:35:50 thomas Exp 63 */ 64 65/* 66 * Copyright (c) 1995, 1996 67 * Matt Thomas <matt@3am-software.com>. All rights reserved. 68 * 69 * Redistribution and use in source and binary forms, with or without 70 * modification, are permitted provided that the following conditions 71 * are met: 72 * 1. Redistributions of source code must retain the above copyright 73 * notice, this list of conditions and the following disclaimer. 74 * 2. Redistributions in binary form must reproduce the above copyright 75 * notice, this list of conditions and the following disclaimer in the 76 * documentation and/or other materials provided with the distribution. 77 * 3. The name of its contributor may not be used to endorse or promote 78 * products derived from this software without specific prior written 79 * permission. 80 * 81 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 82 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 83 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 84 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 85 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 86 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 87 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 88 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 89 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 90 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 91 * SUCH DAMAGE. 92 * 93 * @(#)if_fddisubr.c 8.1 (Berkeley) 6/10/93 94 * 95 * Id: if_fddisubr.c,v 1.15 1997/03/21 22:35:50 thomas Exp 96 */ 97 98#include <sys/cdefs.h> 99__KERNEL_RCSID(0, "$NetBSD$"); 100 101#include "opt_gateway.h" 102#include "opt_inet.h" 103#include "opt_atalk.h" 104#include "opt_iso.h" 105#include "opt_ipx.h" 106#include "opt_mbuftrace.h" 107 108 109#include <sys/param.h> 110#include <sys/systm.h> 111#include <sys/kernel.h> 112#include <sys/malloc.h> 113#include <sys/mbuf.h> 114#include <sys/protosw.h> 115#include <sys/socket.h> 116#include <sys/ioctl.h> 117#include <sys/errno.h> 118#include <sys/syslog.h> 119 120#include <sys/cpu.h> 121 122#include <net/if.h> 123#include <net/netisr.h> 124#include <net/route.h> 125#include <net/if_llc.h> 126#include <net/if_dl.h> 127#include <net/if_types.h> 128 129#include <net/bpf.h> 130 131#ifdef INET 132#include <netinet/in.h> 133#include <netinet/in_var.h> 134#include <netinet/if_inarp.h> 135#include "opt_gateway.h" 136#endif 137#include <net/if_fddi.h> 138 139#ifdef IPX 140#include <netipx/ipx.h> 141#include <netipx/ipx_if.h> 142#endif 143 144#ifdef INET6 145#ifndef INET 146#include <netinet/in.h> 147#include <netinet/in_var.h> 148#endif 149#include <netinet6/nd6.h> 150#endif 151 152 153#include "carp.h" 154#if NCARP > 0 155#include <netinet/ip_carp.h> 156#endif 157 158#ifdef DECNET 159#include <netdnet/dn.h> 160#endif 161 162#ifdef ISO 163#include <netiso/argo_debug.h> 164#include <netiso/iso.h> 165#include <netiso/iso_var.h> 166#include <netiso/iso_snpac.h> 167#endif 168 169 170#ifdef NETATALK 171#include <netatalk/at.h> 172#include <netatalk/at_var.h> 173#include <netatalk/at_extern.h> 174 175#define llc_snap_org_code llc_un.type_snap.org_code 176#define llc_snap_ether_type llc_un.type_snap.ether_type 177 178extern u_char at_org_code[ 3 ]; 179extern u_char aarp_org_code[ 3 ]; 180#endif /* NETATALK */ 181 182 183 184#define senderr(e) { error = (e); goto bad;} 185 186/* 187 * This really should be defined in if_llc.h but in case it isn't. 188 */ 189#ifndef llc_snap 190#define llc_snap llc_un.type_snap 191#endif 192 193#define FDDIADDR(ifp) LLADDR((ifp)->if_sadl) 194#define CFDDIADDR(ifp) CLLADDR((ifp)->if_sadl) 195 196static int fddi_output(struct ifnet *, struct mbuf *, 197 const struct sockaddr *, struct rtentry *); 198static void fddi_input(struct ifnet *, struct mbuf *); 199 200/* 201 * FDDI output routine. 202 * Encapsulate a packet of type family for the local net. 203 * Assumes that ifp is actually pointer to ethercom structure. 204 */ 205static int 206fddi_output(struct ifnet *ifp0, struct mbuf *m0, const struct sockaddr *dst, 207 struct rtentry *rt0) 208{ 209 uint16_t etype; 210 int error = 0, hdrcmplt = 0; 211 uint8_t esrc[6], edst[6]; 212 struct mbuf *m = m0; 213 struct rtentry *rt; 214 struct fddi_header *fh; 215 struct mbuf *mcopy = NULL; 216 struct ifnet *ifp = ifp0; 217 ALTQ_DECL(struct altq_pktattr pktattr;) 218 219 MCLAIM(m, ifp->if_mowner); 220 221#if NCARP > 0 222 if (ifp->if_type == IFT_CARP) { 223 struct ifaddr *ifa; 224 225 /* loop back if this is going to the carp interface */ 226 if (dst != NULL && ifp0->if_link_state == LINK_STATE_UP && 227 (ifa = ifa_ifwithaddr(dst)) != NULL && 228 ifa->ifa_ifp == ifp0) 229 return (looutput(ifp0, m, dst, rt0)); 230 231 ifp = ifp->if_carpdev; 232 /* ac = (struct arpcom *)ifp; */ 233 234 if ((ifp0->if_flags & (IFF_UP|IFF_RUNNING)) != 235 (IFF_UP|IFF_RUNNING)) 236 senderr(ENETDOWN); 237 } 238#endif /* NCARP > 0 */ 239 if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING)) 240 senderr(ENETDOWN); 241#if !defined(__bsdi__) || _BSDI_VERSION >= 199401 242 if ((rt = rt0) != NULL) { 243 if ((rt->rt_flags & RTF_UP) == 0) { 244 if ((rt0 = rt = rtalloc1(dst, 1)) != NULL) 245 rt->rt_refcnt--; 246 else 247 senderr(EHOSTUNREACH); 248 } 249 if (rt->rt_flags & RTF_GATEWAY) { 250 if (rt->rt_gwroute == 0) 251 goto lookup; 252 if (((rt = rt->rt_gwroute)->rt_flags & RTF_UP) == 0) { 253 rtfree(rt); rt = rt0; 254 lookup: rt->rt_gwroute = rtalloc1(rt->rt_gateway, 1); 255 if ((rt = rt->rt_gwroute) == 0) 256 senderr(EHOSTUNREACH); 257 } 258 } 259 if (rt->rt_flags & RTF_REJECT) 260 if (rt->rt_rmx.rmx_expire == 0 || 261 time_second < rt->rt_rmx.rmx_expire) 262 senderr(rt == rt0 ? EHOSTDOWN : EHOSTUNREACH); 263 } 264#endif 265 266 /* 267 * If the queueing discipline needs packet classification, 268 * do it before prepending link headers. 269 */ 270 IFQ_CLASSIFY(&ifp->if_snd, m, dst->sa_family, &pktattr); 271 272 switch (dst->sa_family) { 273 274#ifdef INET 275 case AF_INET: { 276 if (m->m_flags & M_BCAST) 277 memcpy(edst, fddibroadcastaddr, sizeof(edst)); 278 else if (m->m_flags & M_MCAST) { 279 ETHER_MAP_IP_MULTICAST(&satocsin(dst)->sin_addr, 280 (char *)edst); 281 } else if (!arpresolve(ifp, rt, m, dst, edst)) 282 return (0); /* if not yet resolved */ 283 /* If broadcasting on a simplex interface, loopback a copy */ 284 if ((m->m_flags & M_BCAST) && (ifp->if_flags & IFF_SIMPLEX)) 285 mcopy = m_copy(m, 0, (int)M_COPYALL); 286 etype = htons(ETHERTYPE_IP); 287 break; 288 } 289#endif 290#ifdef INET6 291 case AF_INET6: 292 if (!nd6_storelladdr(ifp, rt, m, dst, edst, sizeof(edst))){ 293 /* something bad happened */ 294 return (0); 295 } 296 etype = htons(ETHERTYPE_IPV6); 297 break; 298#endif 299#ifdef AF_ARP 300 case AF_ARP: { 301 struct arphdr *ah = mtod(m, struct arphdr *); 302 if (m->m_flags & M_BCAST) 303 memcpy(edst, etherbroadcastaddr, sizeof(edst)); 304 else { 305 void *tha = ar_tha(ah); 306 if (tha == NULL) 307 return 0; 308 memcpy(edst, tha, sizeof(edst)); 309 } 310 311 ah->ar_hrd = htons(ARPHRD_ETHER); 312 313 switch (ntohs(ah->ar_op)) { 314 case ARPOP_REVREQUEST: 315 case ARPOP_REVREPLY: 316 etype = htons(ETHERTYPE_REVARP); 317 break; 318 319 case ARPOP_REQUEST: 320 case ARPOP_REPLY: 321 default: 322 etype = htons(ETHERTYPE_ARP); 323 } 324 325 break; 326 } 327#endif /* AF_ARP */ 328#ifdef IPX 329 case AF_IPX: 330 etype = htons(ETHERTYPE_IPX); 331 memcpy(edst, &(((struct sockaddr_ipx *)dst)->sipx_addr.x_host), 332 sizeof (edst)); 333 /* If broadcasting on a simplex interface, loopback a copy */ 334 if ((m->m_flags & M_BCAST) && (ifp->if_flags & IFF_SIMPLEX)) 335 mcopy = m_copy(m, 0, (int)M_COPYALL); 336 break; 337#endif 338#ifdef NETATALK 339 case AF_APPLETALK: { 340 struct at_ifaddr *aa; 341 if (!aarpresolve(ifp, m, (const struct sockaddr_at *)dst, edst)) { 342#ifdef NETATALKDEBUG 343 printf("aarpresolv: failed\n"); 344#endif 345 return (0); 346 } 347 /* 348 * ifaddr is the first thing in at_ifaddr 349 */ 350 if ((aa = (struct at_ifaddr *)at_ifawithnet( 351 (const struct sockaddr_at *)dst, ifp)) == NULL) 352 goto bad; 353 354 /* 355 * In the phase 2 case, we need to prepend an mbuf for the llc 356 * header. Since we must preserve the value of m, which is 357 * passed to us by value, we m_copy() the first mbuf, and use 358 * it for our llc header. 359 */ 360 if (aa->aa_flags & AFA_PHASE2) { 361 struct llc llc; 362 363 M_PREPEND(m, sizeof(struct llc), M_NOWAIT); 364 if (m == 0) 365 senderr(ENOBUFS); 366 llc.llc_dsap = llc.llc_ssap = LLC_SNAP_LSAP; 367 llc.llc_control = LLC_UI; 368 memcpy(llc.llc_snap_org_code, at_org_code, 369 sizeof(at_org_code)); 370 llc.llc_snap_ether_type = htons(ETHERTYPE_ATALK); 371 memcpy(mtod(m, void *), &llc, sizeof(struct llc)); 372 etype = 0; 373 } else { 374 etype = htons(ETHERTYPE_ATALK); 375 } 376 break; 377 } 378#endif /* NETATALK */ 379#ifdef ISO 380 case AF_ISO: { 381 int snpalen; 382 struct llc *l; 383 const struct sockaddr_dl *sdl; 384 385 if (rt && (sdl = satocsdl(rt->rt_gateway)) && 386 sdl->sdl_family == AF_LINK && sdl->sdl_alen > 0) { 387 memcpy(edst, CLLADDR(sdl), sizeof(edst)); 388 } else if ((error = 389 iso_snparesolve(ifp, (const struct sockaddr_iso *)dst, 390 (char *)edst, &snpalen)) != 0) 391 goto bad; /* Not Resolved */ 392 /* If broadcasting on a simplex interface, loopback a copy */ 393 if (*edst & 1) 394 m->m_flags |= (M_BCAST|M_MCAST); 395 if ((m->m_flags & M_BCAST) && (ifp->if_flags & IFF_SIMPLEX) && 396 (mcopy = m_copy(m, 0, (int)M_COPYALL))) { 397 M_PREPEND(mcopy, sizeof (*fh), M_DONTWAIT); 398 if (mcopy) { 399 fh = mtod(mcopy, struct fddi_header *); 400 memcpy(fh->fddi_dhost, edst, sizeof (edst)); 401 memcpy(fh->fddi_shost, CFDDIADDR(ifp), 402 sizeof (edst)); 403 } 404 } 405 M_PREPEND(m, 3, M_DONTWAIT); 406 if (m == NULL) 407 return (0); 408 etype = 0; 409 l = mtod(m, struct llc *); 410 l->llc_dsap = l->llc_ssap = LLC_ISO_LSAP; 411 l->llc_control = LLC_UI; 412 } break; 413#endif /* ISO */ 414 415 case pseudo_AF_HDRCMPLT: 416 { 417 const struct fddi_header *fh1 = 418 (const struct fddi_header *)dst->sa_data; 419 hdrcmplt = 1; 420 memcpy(esrc, fh1->fddi_shost, sizeof (esrc)); 421 /*FALLTHROUGH*/ 422 } 423 424 case AF_LINK: 425 { 426 const struct fddi_header *fh1 = 427 (const struct fddi_header *)dst->sa_data; 428 memcpy(edst, fh1->fddi_dhost, sizeof (edst)); 429 if (*edst & 1) 430 m->m_flags |= (M_BCAST|M_MCAST); 431 etype = 0; 432 break; 433 } 434 435 case AF_UNSPEC: 436 { 437 const struct ether_header *eh; 438 eh = (const struct ether_header *)dst->sa_data; 439 memcpy(edst, eh->ether_dhost, sizeof(edst)); 440 if (*edst & 1) 441 m->m_flags |= (M_BCAST|M_MCAST); 442 etype = eh->ether_type; 443 break; 444 } 445 446 case AF_IMPLINK: 447 { 448 fh = mtod(m, struct fddi_header *); 449 error = EPROTONOSUPPORT; 450 switch (fh->fddi_fc & (FDDIFC_C|FDDIFC_L|FDDIFC_F)) { 451 case FDDIFC_LLC_ASYNC: { 452 /* legal priorities are 0 through 7 */ 453 if ((fh->fddi_fc & FDDIFC_Z) > 7) 454 goto bad; 455 break; 456 } 457 case FDDIFC_LLC_SYNC: { 458 /* FDDIFC_Z bits reserved, must be zero */ 459 if (fh->fddi_fc & FDDIFC_Z) 460 goto bad; 461 break; 462 } 463 case FDDIFC_SMT: { 464 /* FDDIFC_Z bits must be non zero */ 465 if ((fh->fddi_fc & FDDIFC_Z) == 0) 466 goto bad; 467 break; 468 } 469 default: { 470 /* anything else is too dangerous */ 471 goto bad; 472 } 473 } 474 error = 0; 475 if (fh->fddi_dhost[0] & 1) 476 m->m_flags |= (M_BCAST|M_MCAST); 477 goto queue_it; 478 } 479 default: 480 printf("%s: can't handle af%d\n", ifp->if_xname, 481 dst->sa_family); 482 senderr(EAFNOSUPPORT); 483 } 484 485 486 if (mcopy) 487 (void) looutput(ifp, mcopy, dst, rt); 488 if (etype != 0) { 489 struct llc *l; 490 M_PREPEND(m, sizeof (struct llc), M_DONTWAIT); 491 if (m == 0) 492 senderr(ENOBUFS); 493 l = mtod(m, struct llc *); 494 l->llc_control = LLC_UI; 495 l->llc_dsap = l->llc_ssap = LLC_SNAP_LSAP; 496 l->llc_snap.org_code[0] = l->llc_snap.org_code[1] = l->llc_snap.org_code[2] = 0; 497 memcpy(&l->llc_snap.ether_type, &etype, sizeof(uint16_t)); 498 } 499 /* 500 * Add local net header. If no space in first mbuf, 501 * allocate another. 502 */ 503 M_PREPEND(m, sizeof (struct fddi_header), M_DONTWAIT); 504 if (m == 0) 505 senderr(ENOBUFS); 506 fh = mtod(m, struct fddi_header *); 507 fh->fddi_fc = FDDIFC_LLC_ASYNC|FDDIFC_LLC_PRIO4; 508 memcpy(fh->fddi_dhost, edst, sizeof (edst)); 509 queue_it: 510 if (hdrcmplt) 511 memcpy(fh->fddi_shost, esrc, sizeof(fh->fddi_shost)); 512 else 513 memcpy(fh->fddi_shost, CFDDIADDR(ifp), sizeof(fh->fddi_shost)); 514 515#if NCARP > 0 516 if (ifp0 != ifp && ifp0->if_type == IFT_CARP) { 517 if_set_sadl(ifp0, fh->fddi_shost, sizeof(fh->fddi_shost), 518 false); 519 } 520 521 if (ifp != ifp0) 522 ifp0->if_obytes += m->m_pkthdr.len; 523#endif /* NCARP > 0 */ 524 return ifq_enqueue(ifp, m ALTQ_COMMA ALTQ_DECL(&pktattr)); 525 526bad: 527 if (m) 528 m_freem(m); 529 return (error); 530} 531 532/* 533 * Process a received FDDI packet; 534 * the packet is in the mbuf chain m with 535 * the fddi header. 536 */ 537static void 538fddi_input(struct ifnet *ifp, struct mbuf *m) 539{ 540#if defined(INET) || defined(INET6) || defined(NS) || defined(DECNET) || defined(IPX) || defined(NETATALK) 541 struct ifqueue *inq; 542 int s; 543#endif 544 struct llc *l; 545 struct fddi_header *fh; 546 547 MCLAIM(m, &((struct ethercom *)ifp)->ec_rx_mowner); 548 if ((ifp->if_flags & IFF_UP) == 0) { 549 m_freem(m); 550 return; 551 } 552 553 fh = mtod(m, struct fddi_header *); 554 555 ifp->if_ibytes += m->m_pkthdr.len; 556 if (fh->fddi_dhost[0] & 1) { 557 if (memcmp(fddibroadcastaddr, fh->fddi_dhost, 558 sizeof(fddibroadcastaddr)) == 0) 559 m->m_flags |= M_BCAST; 560 else 561 m->m_flags |= M_MCAST; 562 ifp->if_imcasts++; 563 } else if ((ifp->if_flags & IFF_PROMISC) 564 && memcmp(CFDDIADDR(ifp), (void *)fh->fddi_dhost, 565 sizeof(fh->fddi_dhost)) != 0) { 566 m_freem(m); 567 return; 568 } 569 570#ifdef M_LINK0 571 /* 572 * If this has a LLC priority of 0, then mark it so upper 573 * layers have a hint that it really came via a FDDI/Ethernet 574 * bridge. 575 */ 576 if ((fh->fddi_fc & FDDIFC_LLC_PRIO7) == FDDIFC_LLC_PRIO0) 577 m->m_flags |= M_LINK0; 578#endif 579 580 l = (struct llc *)(fh+1); 581 switch (l->llc_dsap) { 582#if defined(INET) || defined(INET6) || defined(NS) || defined(DECNET) || defined(IPX) || defined(NETATALK) 583 case LLC_SNAP_LSAP: 584 { 585 uint16_t etype; 586 if (l->llc_control != LLC_UI || l->llc_ssap != LLC_SNAP_LSAP) 587 goto dropanyway; 588 589 /* Strip off the FDDI header. */ 590 m_adj(m, sizeof(struct fddi_header)); 591 592#ifdef NETATALK 593 if (memcmp(&(l->llc_snap_org_code)[0], at_org_code, 594 sizeof(at_org_code)) == 0 && 595 ntohs(l->llc_snap_ether_type) == ETHERTYPE_ATALK) { 596 inq = &atintrq2; 597 m_adj( m, sizeof( struct llc )); 598 schednetisr(NETISR_ATALK); 599 break; 600 } 601 602 if (memcmp(&(l->llc_snap_org_code)[0], aarp_org_code, 603 sizeof(aarp_org_code)) == 0 && 604 ntohs(l->llc_snap_ether_type) == ETHERTYPE_AARP) { 605 m_adj( m, sizeof( struct llc )); 606 aarpinput(ifp, m); /* XXX */ 607 return; 608 } 609#endif /* NETATALK */ 610 if (l->llc_snap.org_code[0] != 0 || l->llc_snap.org_code[1] != 0|| l->llc_snap.org_code[2] != 0) 611 goto dropanyway; 612 etype = ntohs(l->llc_snap.ether_type); 613 m_adj(m, 8); 614#if NCARP > 0 615 if (ifp->if_carp && ifp->if_type != IFT_CARP && 616 (carp_input(m, (uint8_t *)&fh->fddi_shost, 617 (uint8_t *)&fh->fddi_dhost, l->llc_snap.ether_type) == 0)) 618 return; 619#endif 620 621 switch (etype) { 622#ifdef INET 623 case ETHERTYPE_IP: 624#ifdef GATEWAY 625 if (ipflow_fastforward(m)) 626 return; 627#endif 628 schednetisr(NETISR_IP); 629 inq = &ipintrq; 630 break; 631 632 case ETHERTYPE_ARP: 633#if !defined(__bsdi__) || _BSDI_VERSION >= 199401 634 schednetisr(NETISR_ARP); 635 inq = &arpintrq; 636 break; 637#else 638 arpinput(ifp, m); 639 return; 640#endif 641#endif 642#ifdef IPX 643 case ETHERTYPE_IPX: 644 schednetisr(NETISR_IPX); 645 inq = &ipxintrq; 646 break; 647#endif 648#ifdef INET6 649 case ETHERTYPE_IPV6: 650#ifdef GATEWAY 651 if (ip6flow_fastforward(&m)) 652 return; 653#endif 654 schednetisr(NETISR_IPV6); 655 inq = &ip6intrq; 656 break; 657 658#endif 659#ifdef DECNET 660 case ETHERTYPE_DECNET: 661 schednetisr(NETISR_DECNET); 662 inq = &decnetintrq; 663 break; 664#endif 665#ifdef NETATALK 666 case ETHERTYPE_ATALK: 667 schednetisr(NETISR_ATALK); 668 inq = &atintrq1; 669 break; 670 case ETHERTYPE_AARP: 671 /* probably this should be done with a NETISR as well */ 672 aarpinput(ifp, m); /* XXX */ 673 return; 674#endif /* NETATALK */ 675 default: 676 ifp->if_noproto++; 677 goto dropanyway; 678 } 679 break; 680 } 681#endif /* INET || NS */ 682#ifdef ISO 683 case LLC_ISO_LSAP: 684 switch (l->llc_control) { 685 case LLC_UI: 686 /* LLC_UI_P forbidden in class 1 service */ 687 if ((l->llc_dsap == LLC_ISO_LSAP) && 688 (l->llc_ssap == LLC_ISO_LSAP)) { 689 690 schednetisr(NETISR_ISO); 691 inq = &clnlintrq; 692 break; 693 } 694 goto dropanyway; 695 696 case LLC_XID: 697 case LLC_XID_P: 698 if(m->m_len < 699 LLC_XID_BASIC_MINLEN + sizeof(struct fddi_header)) 700 goto dropanyway; 701 l->llc_window = 0; 702 l->llc_fid = LLC_XID_FORMAT_BASIC; 703 l->llc_class = LLC_XID_CLASS_I; 704 l->llc_dsap = l->llc_ssap = 0; 705 /* Fall through to */ 706 case LLC_TEST: 707 case LLC_TEST_P: 708 { 709 struct sockaddr sa; 710 struct ether_header *eh; 711 int i; 712 u_char c = l->llc_dsap; 713 714 l->llc_dsap = l->llc_ssap; 715 l->llc_ssap = c; 716 eh = (struct ether_header *)sa.sa_data; 717 if (m->m_flags & (M_BCAST | M_MCAST)) 718 memcpy(eh->ether_dhost, CFDDIADDR(ifp), 6); 719 sa.sa_family = AF_UNSPEC; 720 sa.sa_len = sizeof(sa); 721 for (i = 0; i < 6; i++) { 722 eh->ether_shost[i] = fh->fddi_dhost[i]; 723 eh->ether_dhost[i] = fh->fddi_shost[i]; 724 } 725 eh->ether_type = 0; 726 m_adj(m, sizeof(struct fddi_header)); 727 ifp->if_output(ifp, m, &sa, NULL); 728 return; 729 } 730 default: 731 m_freem(m); 732 return; 733 } 734 break; 735#endif /* ISO */ 736 737 default: 738 ifp->if_noproto++; 739#if defined(INET) || defined(INET6) || defined(NS) || defined(DECNET) || defined(IPX) || defined(NETATALK) 740 dropanyway: 741#endif 742 m_freem(m); 743 return; 744 } 745 746#if defined(INET) || defined(INET6) || defined(NS) || defined(DECNET) || defined(IPX) || defined(NETATALK) 747 s = splnet(); 748 if (IF_QFULL(inq)) { 749 IF_DROP(inq); 750 m_freem(m); 751 } else 752 IF_ENQUEUE(inq, m); 753 splx(s); 754#endif 755} 756 757/* 758 * Perform common duties while attaching to interface list 759 */ 760void 761fddi_ifattach(struct ifnet *ifp, void *lla) 762{ 763 struct ethercom *ec = (struct ethercom *)ifp; 764 765 ifp->if_type = IFT_FDDI; 766 ifp->if_hdrlen = 21; 767 ifp->if_dlt = DLT_FDDI; 768 ifp->if_mtu = FDDIMTU; 769 ifp->if_output = fddi_output; 770 ifp->if_input = fddi_input; 771 ifp->if_baudrate = IF_Mbps(100); 772#ifdef IFF_NOTRAILERS 773 ifp->if_flags |= IFF_NOTRAILERS; 774#endif 775 776 /* 777 * Update the max_linkhdr 778 */ 779 if (ALIGN(ifp->if_hdrlen) > max_linkhdr) 780 max_linkhdr = ALIGN(ifp->if_hdrlen); 781 782 LIST_INIT(&ec->ec_multiaddrs); 783 if_set_sadl(ifp, lla, 6, true); 784 785 ifp->if_broadcastaddr = fddibroadcastaddr; 786 bpf_attach(ifp, DLT_FDDI, sizeof(struct fddi_header)); 787#ifdef MBUFTRACE 788 strlcpy(ec->ec_tx_mowner.mo_name, ifp->if_xname, 789 sizeof(ec->ec_tx_mowner.mo_name)); 790 strlcpy(ec->ec_tx_mowner.mo_descr, "tx", 791 sizeof(ec->ec_tx_mowner.mo_descr)); 792 strlcpy(ec->ec_rx_mowner.mo_name, ifp->if_xname, 793 sizeof(ec->ec_rx_mowner.mo_name)); 794 strlcpy(ec->ec_rx_mowner.mo_descr, "rx", 795 sizeof(ec->ec_rx_mowner.mo_descr)); 796 MOWNER_ATTACH(&ec->ec_tx_mowner); 797 MOWNER_ATTACH(&ec->ec_rx_mowner); 798 ifp->if_mowner = &ec->ec_tx_mowner; 799#endif 800} 801