/* * Ethernet output routine. * Encapsulate a packet of type family for the local net. * Use trailer local net encapsulation if enough data in first * packet leaves a multiple of 512 bytes of data in remainder. */ int ether_output(struct ifnet *ifp, struct mbuf *m, const struct sockaddr *dst, struct route *ro) { short type; int error = 0, hdrcmplt = 0; u_char esrc[ETHER_ADDR_LEN], edst[ETHER_ADDR_LEN]; struct llentry *lle = NULL; struct rtentry *rt0 = NULL; struct ether_header *eh; struct pf_mtag *t; int loop_copy = 1; int hlen; /* link layer header length */ if (ro != NULL) { if (!(m->m_flags & (M_BCAST | M_MCAST))) lle = ro->ro_lle; rt0 = ro->ro_rt; } #ifdef MAC error = mac_ifnet_check_transmit(ifp, m); if (error) senderr(error); #endif M_PROFILE(m); if (ifp->if_flags & IFF_MONITOR) senderr(ENETDOWN); if (!((ifp->if_flags & IFF_UP) && (ifp->if_drv_flags & IFF_DRV_RUNNING))) senderr(ENETDOWN); hlen = ETHER_HDR_LEN; switch (dst->sa_family) { #ifdef INET case AF_INET: if (lle != NULL && (lle->la_flags & LLE_VALID)) memcpy(edst, &lle->ll_addr.mac16, sizeof(edst)); else error = arpresolve(ifp, rt0, m, dst, edst, &lle); if (error) return (error == EWOULDBLOCK ? 0 : error); type = htons(ETHERTYPE_IP); break; case AF_ARP: { struct arphdr *ah; ah = mtod(m, struct arphdr *); ah->ar_hrd = htons(ARPHRD_ETHER); loop_copy = 0; /* if this is for us, don't do it */ switch(ntohs(ah->ar_op)) { case ARPOP_REVREQUEST: case ARPOP_REVREPLY: type = htons(ETHERTYPE_REVARP); break; case ARPOP_REQUEST: case ARPOP_REPLY: default: type = htons(ETHERTYPE_ARP); break; } if (m->m_flags & M_BCAST) bcopy(ifp->if_broadcastaddr, edst, ETHER_ADDR_LEN); else bcopy(ar_tha(ah), edst, ETHER_ADDR_LEN); } break; #endif #ifdef INET6 case AF_INET6: if (lle != NULL && (lle->la_flags & LLE_VALID)) memcpy(edst, &lle->ll_addr.mac16, sizeof(edst)); else error = nd6_storelladdr(ifp, m, dst, (u_char *)edst, &lle); if (error) return error; type = htons(ETHERTYPE_IPV6); break; #endif #ifdef IPX case AF_IPX: if (ef_outputp) { error = ef_outputp(ifp, &m, dst, &type, &hlen); if (error) goto bad; } else type = htons(ETHERTYPE_IPX); bcopy(&((const struct sockaddr_ipx *)dst)->sipx_addr.x_host, edst, sizeof (edst)); break; #endif #ifdef NETATALK case AF_APPLETALK: { struct at_ifaddr *aa; if ((aa = at_ifawithnet((const struct sockaddr_at *)dst)) == NULL) senderr(EHOSTUNREACH); /* XXX */ if (!aarpresolve(ifp, m, (const struct sockaddr_at *)dst, edst)) { ifa_free(&aa->aa_ifa); return (0); } /* * In the phase 2 case, need to prepend an mbuf for the llc header. */ if ( aa->aa_flags & AFA_PHASE2 ) { struct llc llc; ifa_free(&aa->aa_ifa); M_PREPEND(m, LLC_SNAPFRAMELEN, M_NOWAIT); if (m == NULL) 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_AT ); bcopy(&llc, mtod(m, caddr_t), LLC_SNAPFRAMELEN); type = htons(m->m_pkthdr.len); hlen = LLC_SNAPFRAMELEN + ETHER_HDR_LEN; } else { ifa_free(&aa->aa_ifa); type = htons(ETHERTYPE_AT); } break; } #endif /* NETATALK */ case pseudo_AF_HDRCMPLT: { const struct ether_header *eh; hdrcmplt = 1; eh = (const struct ether_header *)dst->sa_data; (void)memcpy(esrc, eh->ether_shost, sizeof (esrc)); /* FALLTHROUGH */ case AF_UNSPEC: loop_copy = 0; /* if this is for us, don't do it */ eh = (const struct ether_header *)dst->sa_data; (void)memcpy(edst, eh->ether_dhost, sizeof (edst)); type = eh->ether_type; break; } #ifdef MPLS case AF_MPLS: if (lle != NULL && (lle->la_flags & LLE_VALID)) bcopy(&lle->ll_addr.mac16 , edst, sizeof(edst)); else error = mpls_arpresolve(ifp, rt0, m, dst, edst, &lle); if (error) return (error == EWOULDBLOCK ? 0 : error); if (m->m_flags & (M_BCAST | M_MCAST)) type = htons(ETHERTYPE_MPLS_MCAST); else type = htons(ETHERTYPE_MPLS); break; #endif /* MPLS */ default: if_printf(ifp, "can't handle af%d\n", dst->sa_family); senderr(EAFNOSUPPORT); } if (lle != NULL && (lle->la_flags & LLE_IFADDR)) { update_mbuf_csumflags(m, m); return (if_simloop(ifp, m, dst->sa_family, 0)); } /* * Add local net header. If no space in first mbuf, * allocate another. */ M_PREPEND(m, ETHER_HDR_LEN, M_NOWAIT); if (m == NULL) senderr(ENOBUFS); eh = mtod(m, struct ether_header *); (void)memcpy(&eh->ether_type, &type, sizeof(eh->ether_type)); (void)memcpy(eh->ether_dhost, edst, sizeof (edst)); if (hdrcmplt) (void)memcpy(eh->ether_shost, esrc, sizeof(eh->ether_shost)); else (void)memcpy(eh->ether_shost, IF_LLADDR(ifp), sizeof(eh->ether_shost)); /* * If a simplex interface, and the packet is being sent to our * Ethernet address or a broadcast address, loopback a copy. * XXX To make a simplex device behave exactly like a duplex * device, we should copy in the case of sending to our own * ethernet address (thus letting the original actually appear * on the wire). However, we don't do that here for security * reasons and compatibility with the original behavior. */ if ((ifp->if_flags & IFF_SIMPLEX) && loop_copy && ((t = pf_find_mtag(m)) == NULL || !t->routed)) { if (m->m_flags & M_BCAST) { struct mbuf *n; /* * Because if_simloop() modifies the packet, we need a * writable copy through m_dup() instead of a readonly * one as m_copy[m] would give us. The alternative would * be to modify if_simloop() to handle the readonly mbuf, * but performancewise it is mostly equivalent (trading * extra data copying vs. extra locking). * * XXX This is a local workaround. A number of less * often used kernel parts suffer from the same bug. * See PR kern/105943 for a proposed general solution. */ if ((n = m_dup(m, M_NOWAIT)) != NULL) { update_mbuf_csumflags(m, n); (void)if_simloop(ifp, n, dst->sa_family, hlen); } else ifp->if_iqdrops++; } else if (bcmp(eh->ether_dhost, eh->ether_shost, ETHER_ADDR_LEN) == 0) { update_mbuf_csumflags(m, m); (void) if_simloop(ifp, m, dst->sa_family, hlen); return (0); /* XXX */ } } /* * Bridges require special output handling. */ if (ifp->if_bridge) { BRIDGE_OUTPUT(ifp, m, error); return (error); } #if defined(INET) || defined(INET6) if (ifp->if_carp && (error = (*carp_output_p)(ifp, m, dst))) goto bad; #endif /* Handle ng_ether(4) processing, if any */ if (IFP2AC(ifp)->ac_netgraph != NULL) { KASSERT(ng_ether_output_p != NULL, ("ng_ether_output_p is NULL")); if ((error = (*ng_ether_output_p)(ifp, &m)) != 0) { bad: if (m != NULL) m_freem(m); return (error); } if (m == NULL) return (0); } /* Continue with link-layer output */ return ether_output_frame(ifp, m); }
/* * FDDI output routine. * Encapsulate a packet of type family for the local net. * Use trailer local net encapsulation if enough data in first * packet leaves a multiple of 512 bytes of data in remainder. * Assumes that ifp is actually pointer to arpcom structure. */ static int fddi_output(struct ifnet *ifp, struct mbuf *m, const struct sockaddr *dst, struct route *ro) { u_int16_t type; int loop_copy = 0, error = 0, hdrcmplt = 0; u_char esrc[FDDI_ADDR_LEN], edst[FDDI_ADDR_LEN]; struct fddi_header *fh; #if defined(INET) || defined(INET6) struct llentry *lle; #endif #ifdef MAC error = mac_ifnet_check_transmit(ifp, m); if (error) senderr(error); #endif if (ifp->if_flags & IFF_MONITOR) senderr(ENETDOWN); if (!((ifp->if_flags & IFF_UP) && (ifp->if_drv_flags & IFF_DRV_RUNNING))) senderr(ENETDOWN); getmicrotime(&ifp->if_lastchange); switch (dst->sa_family) { #ifdef INET case AF_INET: { struct rtentry *rt0 = NULL; if (ro != NULL) rt0 = ro->ro_rt; error = arpresolve(ifp, rt0, m, dst, edst, &lle); if (error) return (error == EWOULDBLOCK ? 0 : error); type = htons(ETHERTYPE_IP); break; } case AF_ARP: { struct arphdr *ah; ah = mtod(m, struct arphdr *); ah->ar_hrd = htons(ARPHRD_ETHER); loop_copy = -1; /* if this is for us, don't do it */ switch (ntohs(ah->ar_op)) { case ARPOP_REVREQUEST: case ARPOP_REVREPLY: type = htons(ETHERTYPE_REVARP); break; case ARPOP_REQUEST: case ARPOP_REPLY: default: type = htons(ETHERTYPE_ARP); break; } if (m->m_flags & M_BCAST) bcopy(ifp->if_broadcastaddr, edst, FDDI_ADDR_LEN); else bcopy(ar_tha(ah), edst, FDDI_ADDR_LEN); } break; #endif /* INET */ #ifdef INET6 case AF_INET6: error = nd6_storelladdr(ifp, m, dst, (u_char *)edst, &lle); if (error) return (error); /* Something bad happened */ type = htons(ETHERTYPE_IPV6); break; #endif /* INET6 */ #ifdef IPX case AF_IPX: type = htons(ETHERTYPE_IPX); bcopy(&((const struct sockaddr_ipx *)dst)->sipx_addr.x_host, edst, FDDI_ADDR_LEN); break; #endif /* IPX */ #ifdef NETATALK case AF_APPLETALK: { struct at_ifaddr *aa; if (!aarpresolve(ifp, m, (const struct sockaddr_at *)dst, edst)) return (0); /* * ifaddr is the first thing in at_ifaddr */ if ((aa = at_ifawithnet((const struct sockaddr_at *)dst)) == 0) 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, LLC_SNAPFRAMELEN, M_WAITOK); 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_AT); bcopy(&llc, mtod(m, caddr_t), LLC_SNAPFRAMELEN); type = 0; } else { type = htons(ETHERTYPE_AT); } ifa_free(&aa->aa_ifa); break; } #endif /* NETATALK */ case pseudo_AF_HDRCMPLT: { const struct ether_header *eh; hdrcmplt = 1; eh = (const struct ether_header *)dst->sa_data; bcopy(eh->ether_shost, esrc, FDDI_ADDR_LEN); /* FALLTHROUGH */ } case AF_UNSPEC: { const struct ether_header *eh; loop_copy = -1; eh = (const struct ether_header *)dst->sa_data; bcopy(eh->ether_dhost, edst, FDDI_ADDR_LEN); if (*edst & 1) m->m_flags |= (M_BCAST|M_MCAST); type = eh->ether_type; break; } 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; } default: if_printf(ifp, "can't handle af%d\n", dst->sa_family); senderr(EAFNOSUPPORT); } /* * Add LLC header. */ if (type != 0) { struct llc *l; M_PREPEND(m, LLC_SNAPFRAMELEN, M_NOWAIT); 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; l->llc_snap.ether_type = htons(type); } /* * Add local net header. If no space in first mbuf, * allocate another. */ M_PREPEND(m, FDDI_HDR_LEN, M_NOWAIT); 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, FDDI_ADDR_LEN); queue_it: if (hdrcmplt) bcopy((caddr_t)esrc, (caddr_t)fh->fddi_shost, FDDI_ADDR_LEN); else bcopy(IF_LLADDR(ifp), (caddr_t)fh->fddi_shost, FDDI_ADDR_LEN); /* * If a simplex interface, and the packet is being sent to our * Ethernet address or a broadcast address, loopback a copy. * XXX To make a simplex device behave exactly like a duplex * device, we should copy in the case of sending to our own * ethernet address (thus letting the original actually appear * on the wire). However, we don't do that here for security * reasons and compatibility with the original behavior. */ if ((ifp->if_flags & IFF_SIMPLEX) && (loop_copy != -1)) { if ((m->m_flags & M_BCAST) || (loop_copy > 0)) { struct mbuf *n; n = m_copy(m, 0, (int)M_COPYALL); (void) if_simloop(ifp, n, dst->sa_family, FDDI_HDR_LEN); } else if (bcmp(fh->fddi_dhost, fh->fddi_shost, FDDI_ADDR_LEN) == 0) { (void) if_simloop(ifp, m, dst->sa_family, FDDI_HDR_LEN); return (0); /* XXX */ } } error = (ifp->if_transmit)(ifp, m); if (error) ifp->if_oerrors++; return (error); bad: ifp->if_oerrors++; if (m) m_freem(m); return (error); }
/* * Ethernet output routine. * Encapsulate a packet of type family for the local net. * Assumes that ifp is actually pointer to ethercom structure. */ int ssh_interceptor_ether_output(struct ifnet *ifp, struct mbuf *m0, struct sockaddr *dst, struct rtentry *rt0) { u_int16_t etype = 0; int s, error = 0, hdrcmplt = 0; u_char esrc[6], edst[6]; struct mbuf *m = m0; struct rtentry *rt; struct mbuf *mcopy = (struct mbuf *)0; struct ether_header *eh, ehd; #ifdef INET struct arphdr *ah; #endif /* INET */ #ifdef NETATALK struct at_ifaddr *aa; #endif /* NETATALK */ if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING)) senderr(ENETDOWN); ifp->if_lastchange = time; if ((rt = rt0) != NULL) { if ((rt->rt_flags & RTF_UP) == 0) { if ((rt0 = rt = rtalloc1(dst, 1)) != NULL) { rt->rt_refcnt--; if (rt->rt_ifp != ifp) return (*rt->rt_ifp->if_output) (ifp, m0, dst, rt); } else senderr(EHOSTUNREACH); } if ((rt->rt_flags & RTF_GATEWAY) && dst->sa_family != AF_NS) { 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); /* the "G" test below also prevents rt == rt0 */ if ((rt->rt_flags & RTF_GATEWAY) || (rt->rt_ifp != ifp)) { rt->rt_refcnt--; rt0->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); } switch (dst->sa_family) { #ifdef INET case AF_INET: if (m->m_flags & M_BCAST) bcopy((caddr_t)etherbroadcastaddr, (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; case AF_ARP: 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 #ifdef INET6 case AF_INET6: #ifdef OLDIP6OUTPUT if (!nd6_resolve(ifp, rt, m, dst, (u_char *)edst)) return(0); /* if not yet resolves */ #else if (!nd6_storelladdr(ifp, rt, m, dst, (u_char *)edst)){ /* this must be impossible, so we bark */ printf("nd6_storelladdr failed\n"); return(0); } #endif /* OLDIP6OUTPUT */ etype = htons(ETHERTYPE_IPV6); break; #endif #ifdef NETATALK case AF_APPLETALK: if (!aarpresolve(ifp, m, (struct sockaddr_at *)dst, edst)) { #ifdef NETATALKDEBUG printf("aarpresolv failed\n"); #endif /* NETATALKDEBUG */ return (0); } /* * ifaddr is the first thing in at_ifaddr */ aa = (struct at_ifaddr *) at_ifawithnet( (struct sockaddr_at *)dst, ifp); if (aa == 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_DONTWAIT); llc.llc_dsap = llc.llc_ssap = LLC_SNAP_LSAP; llc.llc_control = LLC_UI; bcopy(at_org_code, llc.llc_snap_org_code, sizeof(llc.llc_snap_org_code)); llc.llc_snap_ether_type = htons(ETHERTYPE_ATALK); bcopy(&llc, mtod(m, caddr_t), sizeof(struct llc)); } 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 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 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 { error = iso_snparesolve(ifp, (struct sockaddr_iso *)dst, (char *)edst, &snpalen); if (error) 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 (*eh), M_DONTWAIT); if (mcopy) { eh = mtod(mcopy, struct ether_header *); bcopy((caddr_t)edst, (caddr_t)eh->ether_dhost, sizeof (edst)); bcopy(LLADDR(ifp->if_sadl), (caddr_t)eh->ether_shost, sizeof (edst)); } } M_PREPEND(m, 3, M_DONTWAIT); if (m == NULL) return (0); l = mtod(m, struct llc *); l->llc_dsap = l->llc_ssap = LLC_ISO_LSAP; l->llc_control = LLC_UI; #ifdef ARGO_DEBUG if (argo_debug[D_ETHER]) { int i; printf("unoutput: sending pkt to: "); for (i=0; i<6; i++) printf("%x ", edst[i] & 0xff); printf("\n"); } #endif } 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 (*eh), M_DONTWAIT); if (mcopy) { eh = mtod(mcopy, struct ether_header *); bcopy((caddr_t)edst, (caddr_t)eh->ether_dhost, sizeof (edst)); bcopy(LLADDR(ifp->if_sadl), (caddr_t)eh->ether_shost, sizeof (edst)); } } #ifdef LLC_DEBUG { int i; struct llc *l = mtod(m, struct llc *); printf("ether_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;