/* $NetBSD: if_fddisubr.c,v 1.55 2005/03/31 15:48:13 christos Exp $ */ /* * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the project nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ /* * Copyright (c) 1982, 1989, 1993 * The Regents of the University of California. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the University nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)if_fddisubr.c 8.1 (Berkeley) 6/10/93 * * Id: if_fddisubr.c,v 1.15 1997/03/21 22:35:50 thomas Exp */ /* * Copyright (c) 1995, 1996 * Matt Thomas . All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. The name of its contributor may not be used to endorse or promote * products derived from this software without specific prior written * permission. * * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * @(#)if_fddisubr.c 8.1 (Berkeley) 6/10/93 * * Id: if_fddisubr.c,v 1.15 1997/03/21 22:35:50 thomas Exp */ #include __KERNEL_RCSID(0, "$NetBSD: if_fddisubr.c,v 1.55 2005/03/31 15:48:13 christos Exp $"); #include "opt_inet.h" #include "opt_atalk.h" #include "opt_ccitt.h" #include "opt_llc.h" #include "opt_iso.h" #include "opt_ns.h" #include "opt_ipx.h" #include "opt_mbuftrace.h" #include "bpfilter.h" #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #if NBPFILTER > 0 #include #endif #ifdef INET #include #include #include #include "opt_gateway.h" #endif #include #ifdef IPX #include #include #endif #ifdef INET6 #ifndef INET #include #include #endif #include #endif #ifdef NS #include #include #endif #ifdef DECNET #include #endif #ifdef ISO #include #include #include #include #endif #ifdef LLC #include #include #endif #ifdef NETATALK #include #include #include #define llc_snap_org_code llc_un.type_snap.org_code #define llc_snap_ether_type llc_un.type_snap.ether_type extern u_char at_org_code[ 3 ]; extern u_char aarp_org_code[ 3 ]; #endif /* NETATALK */ #if defined(LLC) && defined(CCITT) extern struct ifqueue pkintrq; #endif #include "bpfilter.h" #define senderr(e) { error = (e); goto bad;} /* * This really should be defined in if_llc.h but in case it isn't. */ #ifndef llc_snap #define llc_snap llc_un.type_snap #endif #define FDDIADDR(ifp) LLADDR((ifp)->if_sadl) static int fddi_output __P((struct ifnet *, struct mbuf *, struct sockaddr *, struct rtentry *)); static void fddi_input __P((struct ifnet *, struct mbuf *)); /* * FDDI output routine. * Encapsulate a packet of type family for the local net. * Assumes that ifp is actually pointer to ethercom structure. */ static int fddi_output(ifp, m0, dst, rt0) struct ifnet *ifp; struct mbuf *m0; struct sockaddr *dst; struct rtentry *rt0; { u_int16_t etype; int error = 0, hdrcmplt = 0; u_char esrc[6], edst[6]; struct mbuf *m = m0; struct rtentry *rt; struct fddi_header *fh; struct mbuf *mcopy = (struct mbuf *)0; ALTQ_DECL(struct altq_pktattr pktattr;) MCLAIM(m, ifp->if_mowner); if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING)) senderr(ENETDOWN); #if !defined(__bsdi__) || _BSDI_VERSION >= 199401 if ((rt = rt0) != NULL) { if ((rt->rt_flags & RTF_UP) == 0) { if ((rt0 = rt = rtalloc1(dst, 1)) != NULL) rt->rt_refcnt--; else senderr(EHOSTUNREACH); } if (rt->rt_flags & RTF_GATEWAY) { if (rt->rt_gwroute == 0) goto lookup; if (((rt = rt->rt_gwroute)->rt_flags & RTF_UP) == 0) { rtfree(rt); rt = rt0; lookup: rt->rt_gwroute = rtalloc1(rt->rt_gateway, 1); if ((rt = rt->rt_gwroute) == 0) senderr(EHOSTUNREACH); } } if (rt->rt_flags & RTF_REJECT) if (rt->rt_rmx.rmx_expire == 0 || time.tv_sec < rt->rt_rmx.rmx_expire) senderr(rt == rt0 ? EHOSTDOWN : EHOSTUNREACH); } #endif /* * If the queueing discipline needs packet classification, * do it before prepending link headers. */ IFQ_CLASSIFY(&ifp->if_snd, m, dst->sa_family, &pktattr); switch (dst->sa_family) { #ifdef INET case AF_INET: { #define SIN(x) ((struct sockaddr_in *)(x)) if (m->m_flags & M_BCAST) bcopy((caddr_t)fddibroadcastaddr, (caddr_t)edst, sizeof(edst)); else if (m->m_flags & M_MCAST) { ETHER_MAP_IP_MULTICAST(&SIN(dst)->sin_addr, (caddr_t)edst) } else if (!arpresolve(ifp, rt, m, dst, edst)) return (0); /* if not yet resolved */ /* If broadcasting on a simplex interface, loopback a copy */ if ((m->m_flags & M_BCAST) && (ifp->if_flags & IFF_SIMPLEX)) mcopy = m_copy(m, 0, (int)M_COPYALL); etype = htons(ETHERTYPE_IP); break; } #endif #ifdef INET6 case AF_INET6: if (!nd6_storelladdr(ifp, rt, m, dst, (u_char *)edst)){ /* something bad happened */ return (0); } etype = htons(ETHERTYPE_IPV6); break; #endif #ifdef AF_ARP case AF_ARP: { struct arphdr *ah = mtod(m, struct arphdr *); if (m->m_flags & M_BCAST) bcopy((caddr_t)etherbroadcastaddr, (caddr_t)edst, sizeof(edst)); else bcopy((caddr_t)ar_tha(ah), (caddr_t)edst, sizeof(edst)); ah->ar_hrd = htons(ARPHRD_ETHER); switch (ntohs(ah->ar_op)) { case ARPOP_REVREQUEST: case ARPOP_REVREPLY: etype = htons(ETHERTYPE_REVARP); break; case ARPOP_REQUEST: case ARPOP_REPLY: default: etype = htons(ETHERTYPE_ARP); } break; } #endif /* AF_ARP */ #ifdef IPX case AF_IPX: etype = htons(ETHERTYPE_IPX); bcopy((caddr_t)&(((struct sockaddr_ipx *)dst)->sipx_addr.x_host), (caddr_t)edst, sizeof (edst)); /* If broadcasting on a simplex interface, loopback a copy */ if ((m->m_flags & M_BCAST) && (ifp->if_flags & IFF_SIMPLEX)) mcopy = m_copy(m, 0, (int)M_COPYALL); break; #endif #ifdef NETATALK case AF_APPLETALK: { struct at_ifaddr *aa; if (!aarpresolve(ifp, m, (struct sockaddr_at *)dst, edst)) { #ifdef NETATALKDEBUG printf("aarpresolv: failed\n"); #endif return (0); } /* * ifaddr is the first thing in at_ifaddr */ if ((aa = (struct at_ifaddr *)at_ifawithnet( (struct sockaddr_at *)dst, ifp)) == NULL) goto bad; /* * In the phase 2 case, we need to prepend an mbuf for the llc * header. Since we must preserve the value of m, which is * passed to us by value, we m_copy() the first mbuf, and use * it for our llc header. */ if (aa->aa_flags & AFA_PHASE2) { struct llc llc; M_PREPEND(m, sizeof(struct llc), M_NOWAIT); if (m == 0) senderr(ENOBUFS); llc.llc_dsap = llc.llc_ssap = LLC_SNAP_LSAP; llc.llc_control = LLC_UI; bcopy(at_org_code, llc.llc_snap_org_code, sizeof(at_org_code)); llc.llc_snap_ether_type = htons(ETHERTYPE_ATALK); bcopy(&llc, mtod(m, caddr_t), sizeof(struct llc)); etype = 0; } else { etype = htons(ETHERTYPE_ATALK); } break; } #endif /* NETATALK */ #ifdef NS case AF_NS: etype = htons(ETHERTYPE_NS); bcopy((caddr_t)&(((struct sockaddr_ns *)dst)->sns_addr.x_host), (caddr_t)edst, sizeof (edst)); if (!bcmp((caddr_t)edst, (caddr_t)&ns_thishost, sizeof(edst))) return (looutput(ifp, m, dst, rt)); /* If broadcasting on a simplex interface, loopback a copy */ if ((m->m_flags & M_BCAST) && (ifp->if_flags & IFF_SIMPLEX)) mcopy = m_copy(m, 0, (int)M_COPYALL); break; #endif #ifdef ISO case AF_ISO: { int snpalen; struct llc *l; struct sockaddr_dl *sdl; if (rt && (sdl = (struct sockaddr_dl *)rt->rt_gateway) && sdl->sdl_family == AF_LINK && sdl->sdl_alen > 0) { bcopy(LLADDR(sdl), (caddr_t)edst, sizeof(edst)); } else if ((error = iso_snparesolve(ifp, (struct sockaddr_iso *)dst, (char *)edst, &snpalen)) != 0) goto bad; /* Not Resolved */ /* If broadcasting on a simplex interface, loopback a copy */ if (*edst & 1) m->m_flags |= (M_BCAST|M_MCAST); if ((m->m_flags & M_BCAST) && (ifp->if_flags & IFF_SIMPLEX) && (mcopy = m_copy(m, 0, (int)M_COPYALL))) { M_PREPEND(mcopy, sizeof (*fh), M_DONTWAIT); if (mcopy) { fh = mtod(mcopy, struct fddi_header *); bcopy((caddr_t)edst, (caddr_t)fh->fddi_dhost, sizeof (edst)); bcopy((caddr_t)FDDIADDR(ifp), (caddr_t)fh->fddi_shost, sizeof (edst)); } } M_PREPEND(m, 3, M_DONTWAIT); if (m == NULL) return (0); etype = 0; l = mtod(m, struct llc *); l->llc_dsap = l->llc_ssap = LLC_ISO_LSAP; l->llc_control = LLC_UI; } break; #endif /* ISO */ #ifdef LLC /* case AF_NSAP: */ case AF_CCITT: { struct sockaddr_dl *sdl = (struct sockaddr_dl *) rt->rt_gateway; if (sdl && sdl->sdl_family == AF_LINK && sdl->sdl_alen > 0) { bcopy(LLADDR(sdl), (char *)edst, sizeof(edst)); } else goto bad; /* Not a link interface ? Funny ... */ if ((ifp->if_flags & IFF_SIMPLEX) && (*edst & 1) && (mcopy = m_copy(m, 0, (int)M_COPYALL))) { M_PREPEND(mcopy, sizeof (*fh), M_DONTWAIT); if (mcopy) { fh = mtod(mcopy, struct fddi_header *); bcopy((caddr_t)edst, (caddr_t)fh->fddi_dhost, sizeof (edst)); bcopy((caddr_t)FDDIADDR(ifp), (caddr_t)fh->fddi_shost, sizeof (edst)); fh->fddi_fc = FDDIFC_LLC_ASYNC|FDDIFC_LLC_PRIO4; } } etype = 0; #ifdef LLC_DEBUG { int i; struct llc *l = mtod(m, struct llc *); printf("fddi_output: sending LLC2 pkt to: "); for (i=0; i<6; i++) printf("%x ", edst[i] & 0xff); printf(" len 0x%x dsap 0x%x ssap 0x%x control 0x%x\n", m->m_pkthdr.len, l->llc_dsap & 0xff, l->llc_ssap &0xff, l->llc_control & 0xff); } #endif /* LLC_DEBUG */ } break; #endif /* LLC */ case pseudo_AF_HDRCMPLT: { struct fddi_header *fh = (struct fddi_header *)dst->sa_data; hdrcmplt = 1; bcopy((caddr_t)fh->fddi_shost, (caddr_t)esrc, sizeof (esrc)); /*FALLTHROUGH*/ } case AF_LINK: { struct fddi_header *fh = (struct fddi_header *)dst->sa_data; bcopy((caddr_t)fh->fddi_dhost, (caddr_t)edst, sizeof (edst)); if (*edst & 1) m->m_flags |= (M_BCAST|M_MCAST); etype = 0; break; } case AF_UNSPEC: { struct ether_header *eh; eh = (struct ether_header *)dst->sa_data; bcopy((caddr_t)eh->ether_dhost, (caddr_t)edst, sizeof (edst)); if (*edst & 1) m->m_flags |= (M_BCAST|M_MCAST); etype = eh->ether_type; break; } #if NBPFILTER > 0 case AF_IMPLINK: { fh = mtod(m, struct fddi_header *); error = EPROTONOSUPPORT; switch (fh->fddi_fc & (FDDIFC_C|FDDIFC_L|FDDIFC_F)) { case FDDIFC_LLC_ASYNC: { /* legal priorities are 0 through 7 */ if ((fh->fddi_fc & FDDIFC_Z) > 7) goto bad; break; } case FDDIFC_LLC_SYNC: { /* FDDIFC_Z bits reserved, must be zero */ if (fh->fddi_fc & FDDIFC_Z) goto bad; break; } case FDDIFC_SMT: { /* FDDIFC_Z bits must be non zero */ if ((fh->fddi_fc & FDDIFC_Z) == 0) goto bad; break; } default: { /* anything else is too dangerous */ goto bad; } } error = 0; if (fh->fddi_dhost[0] & 1) m->m_flags |= (M_BCAST|M_MCAST); goto queue_it; } #endif default: printf("%s: can't handle af%d\n", ifp->if_xname, dst->sa_family); senderr(EAFNOSUPPORT); } if (mcopy) (void) looutput(ifp, mcopy, dst, rt); if (etype != 0) { struct llc *l; M_PREPEND(m, sizeof (struct llc), M_DONTWAIT); if (m == 0) senderr(ENOBUFS); l = mtod(m, struct llc *); l->llc_control = LLC_UI; l->llc_dsap = l->llc_ssap = LLC_SNAP_LSAP; l->llc_snap.org_code[0] = l->llc_snap.org_code[1] = l->llc_snap.org_code[2] = 0; bcopy((caddr_t) &etype, (caddr_t) &l->llc_snap.ether_type, sizeof(u_int16_t)); } /* * Add local net header. If no space in first mbuf, * allocate another. */ M_PREPEND(m, sizeof (struct fddi_header), M_DONTWAIT); if (m == 0) senderr(ENOBUFS); fh = mtod(m, struct fddi_header *); fh->fddi_fc = FDDIFC_LLC_ASYNC|FDDIFC_LLC_PRIO4; bcopy((caddr_t)edst, (caddr_t)fh->fddi_dhost, sizeof (edst)); #if NBPFILTER > 0 queue_it: #endif if (hdrcmplt) bcopy((caddr_t)esrc, (caddr_t)fh->fddi_shost, sizeof(fh->fddi_shost)); else bcopy((caddr_t)FDDIADDR(ifp), (caddr_t)fh->fddi_shost, sizeof(fh->fddi_shost)); return ifq_enqueue(ifp, m ALTQ_COMMA ALTQ_DECL(&pktattr)); bad: if (m) m_freem(m); return (error); } /* * Process a received FDDI packet; * the packet is in the mbuf chain m with * the fddi header. */ static void fddi_input(ifp, m) struct ifnet *ifp; struct mbuf *m; { #if defined(INET) || defined(INET6) || defined(NS) || defined(DECNET) || defined(IPX) || defined(NETATALK) struct ifqueue *inq; int s; #endif struct llc *l; struct fddi_header *fh; MCLAIM(m, &((struct ethercom *)ifp)->ec_rx_mowner); if ((ifp->if_flags & IFF_UP) == 0) { m_freem(m); return; } fh = mtod(m, struct fddi_header *); ifp->if_ibytes += m->m_pkthdr.len; if (fh->fddi_dhost[0] & 1) { if (bcmp((caddr_t)fddibroadcastaddr, (caddr_t)fh->fddi_dhost, sizeof(fddibroadcastaddr)) == 0) m->m_flags |= M_BCAST; else m->m_flags |= M_MCAST; ifp->if_imcasts++; } else if ((ifp->if_flags & IFF_PROMISC) && bcmp(FDDIADDR(ifp), (caddr_t)fh->fddi_dhost, sizeof(fh->fddi_dhost)) != 0) { m_freem(m); return; } #ifdef M_LINK0 /* * If this has a LLC priority of 0, then mark it so upper * layers have a hint that it really came via a FDDI/Ethernet * bridge. */ if ((fh->fddi_fc & FDDIFC_LLC_PRIO7) == FDDIFC_LLC_PRIO0) m->m_flags |= M_LINK0; #endif /* Strip off the FDDI header. */ m_adj(m, sizeof(struct fddi_header)); l = mtod(m, struct llc *); switch (l->llc_dsap) { #if defined(INET) || defined(INET6) || defined(NS) || defined(DECNET) || defined(IPX) || defined(NETATALK) case LLC_SNAP_LSAP: { u_int16_t etype; if (l->llc_control != LLC_UI || l->llc_ssap != LLC_SNAP_LSAP) goto dropanyway; #ifdef NETATALK if (Bcmp(&(l->llc_snap_org_code)[0], at_org_code, sizeof(at_org_code)) == 0 && ntohs(l->llc_snap_ether_type) == ETHERTYPE_ATALK) { inq = &atintrq2; m_adj( m, sizeof( struct llc )); schednetisr(NETISR_ATALK); break; } if (Bcmp(&(l->llc_snap_org_code)[0], aarp_org_code, sizeof(aarp_org_code)) == 0 && ntohs(l->llc_snap_ether_type) == ETHERTYPE_AARP) { m_adj( m, sizeof( struct llc )); aarpinput(ifp, m); /* XXX */ return; } #endif /* NETATALK */ if (l->llc_snap.org_code[0] != 0 || l->llc_snap.org_code[1] != 0|| l->llc_snap.org_code[2] != 0) goto dropanyway; etype = ntohs(l->llc_snap.ether_type); m_adj(m, 8); switch (etype) { #ifdef INET case ETHERTYPE_IP: #ifdef GATEWAY if (ipflow_fastforward(m)) return; #endif schednetisr(NETISR_IP); inq = &ipintrq; break; case ETHERTYPE_ARP: #if !defined(__bsdi__) || _BSDI_VERSION >= 199401 schednetisr(NETISR_ARP); inq = &arpintrq; break; #else arpinput(ifp, m); return; #endif #endif #ifdef IPX case ETHERTYPE_IPX: schednetisr(NETISR_IPX); inq = &ipxintrq; break; #endif #ifdef NS case ETHERTYPE_NS: schednetisr(NETISR_NS); inq = &nsintrq; break; #endif #ifdef INET6 case ETHERTYPE_IPV6: schednetisr(NETISR_IPV6); inq = &ip6intrq; break; #endif #ifdef DECNET case ETHERTYPE_DECNET: schednetisr(NETISR_DECNET); inq = &decnetintrq; break; #endif #ifdef NETATALK case ETHERTYPE_ATALK: schednetisr(NETISR_ATALK); inq = &atintrq1; break; case ETHERTYPE_AARP: /* probably this should be done with a NETISR as well */ aarpinput(ifp, m); /* XXX */ return; #endif /* NETATALK */ default: ifp->if_noproto++; goto dropanyway; } break; } #endif /* INET || NS */ #ifdef ISO case LLC_ISO_LSAP: switch (l->llc_control) { case LLC_UI: /* LLC_UI_P forbidden in class 1 service */ if ((l->llc_dsap == LLC_ISO_LSAP) && (l->llc_ssap == LLC_ISO_LSAP)) { /* LSAP for ISO */ m->m_data += 3; /* XXX */ m->m_len -= 3; /* XXX */ m->m_pkthdr.len -= 3; /* XXX */ M_PREPEND(m, sizeof *fh, M_DONTWAIT); if (m == 0) return; *mtod(m, struct fddi_header *) = *fh; schednetisr(NETISR_ISO); inq = &clnlintrq; break; } goto dropanyway; case LLC_XID: case LLC_XID_P: if(m->m_len < 6) goto dropanyway; l->llc_window = 0; l->llc_fid = 9; l->llc_class = 1; l->llc_dsap = l->llc_ssap = 0; /* Fall through to */ case LLC_TEST: case LLC_TEST_P: { struct sockaddr sa; struct ether_header *eh; int i; u_char c = l->llc_dsap; l->llc_dsap = l->llc_ssap; l->llc_ssap = c; eh = (struct ether_header *)sa.sa_data; if (m->m_flags & (M_BCAST | M_MCAST)) bcopy((caddr_t)FDDIADDR(ifp), (caddr_t)eh->ether_dhost, 6); sa.sa_family = AF_UNSPEC; sa.sa_len = sizeof(sa); for (i = 0; i < 6; i++) { eh->ether_shost[i] = fh->fddi_dhost[i]; eh->ether_dhost[i] = fh->fddi_shost[i]; } eh->ether_type = 0; ifp->if_output(ifp, m, &sa, NULL); return; } default: m_freem(m); return; } break; #endif /* ISO */ #ifdef LLC case LLC_X25_LSAP: { M_PREPEND(m, sizeof(struct sdl_hdr) , M_DONTWAIT); if (m == 0) return; if ( !sdl_sethdrif(ifp, fh->fddi_shost, LLC_X25_LSAP, fh->fddi_dhost, LLC_X25_LSAP, 6, mtod(m, struct sdl_hdr *))) panic("ETHER cons addr failure"); mtod(m, struct sdl_hdr *)->sdlhdr_len = m->m_pkthdr.len - sizeof(struct sdl_hdr); #ifdef LLC_DEBUG printf("llc packet\n"); #endif /* LLC_DEBUG */ schednetisr(NETISR_CCITT); inq = &llcintrq; break; } #endif /* LLC */ default: ifp->if_noproto++; #if defined(INET) || defined(INET6) || defined(NS) || defined(DECNET) || defined(IPX) || defined(NETATALK) dropanyway: #endif m_freem(m); return; } #if defined(INET) || defined(INET6) || defined(NS) || defined(DECNET) || defined(IPX) || defined(NETATALK) s = splnet(); if (IF_QFULL(inq)) { IF_DROP(inq); m_freem(m); } else IF_ENQUEUE(inq, m); splx(s); #endif } /* * Perform common duties while attaching to interface list */ void fddi_ifattach(ifp, lla) struct ifnet *ifp; caddr_t lla; { struct ethercom *ec = (struct ethercom *)ifp; ifp->if_type = IFT_FDDI; ifp->if_addrlen = 6; ifp->if_hdrlen = 21; ifp->if_dlt = DLT_FDDI; ifp->if_mtu = FDDIMTU; ifp->if_output = fddi_output; ifp->if_input = fddi_input; ifp->if_baudrate = IF_Mbps(100); #ifdef IFF_NOTRAILERS ifp->if_flags |= IFF_NOTRAILERS; #endif /* * Update the max_linkhdr */ if (ALIGN(ifp->if_hdrlen) > max_linkhdr) max_linkhdr = ALIGN(ifp->if_hdrlen); LIST_INIT(&ec->ec_multiaddrs); if_alloc_sadl(ifp); memcpy(LLADDR(ifp->if_sadl), lla, ifp->if_addrlen); ifp->if_broadcastaddr = fddibroadcastaddr; #if NBPFILTER > 0 bpfattach(ifp, DLT_FDDI, sizeof(struct fddi_header)); #endif /* NBPFILTER > 0 */ #ifdef MBUFTRACE strlcpy(ec->ec_tx_mowner.mo_name, ifp->if_xname, sizeof(ec->ec_tx_mowner.mo_name)); strlcpy(ec->ec_tx_mowner.mo_descr, "tx", sizeof(ec->ec_tx_mowner.mo_descr)); strlcpy(ec->ec_rx_mowner.mo_name, ifp->if_xname, sizeof(ec->ec_rx_mowner.mo_name)); strlcpy(ec->ec_rx_mowner.mo_descr, "rx", sizeof(ec->ec_rx_mowner.mo_descr)); MOWNER_ATTACH(&ec->ec_tx_mowner); MOWNER_ATTACH(&ec->ec_rx_mowner); ifp->if_mowner = &ec->ec_tx_mowner; #endif }