1df8bae1dSRodney W. Grimes /* 2df8bae1dSRodney W. Grimes * Copyright (c) 1982, 1989, 1993 3df8bae1dSRodney W. Grimes * The Regents of the University of California. All rights reserved. 4df8bae1dSRodney W. Grimes * 5df8bae1dSRodney W. Grimes * Redistribution and use in source and binary forms, with or without 6df8bae1dSRodney W. Grimes * modification, are permitted provided that the following conditions 7df8bae1dSRodney W. Grimes * are met: 8df8bae1dSRodney W. Grimes * 1. Redistributions of source code must retain the above copyright 9df8bae1dSRodney W. Grimes * notice, this list of conditions and the following disclaimer. 10df8bae1dSRodney W. Grimes * 2. Redistributions in binary form must reproduce the above copyright 11df8bae1dSRodney W. Grimes * notice, this list of conditions and the following disclaimer in the 12df8bae1dSRodney W. Grimes * documentation and/or other materials provided with the distribution. 13df8bae1dSRodney W. Grimes * 4. Neither the name of the University nor the names of its contributors 14df8bae1dSRodney W. Grimes * may be used to endorse or promote products derived from this software 15df8bae1dSRodney W. Grimes * without specific prior written permission. 16df8bae1dSRodney W. Grimes * 17df8bae1dSRodney W. Grimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18df8bae1dSRodney W. Grimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19df8bae1dSRodney W. Grimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20df8bae1dSRodney W. Grimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21df8bae1dSRodney W. Grimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22df8bae1dSRodney W. Grimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23df8bae1dSRodney W. Grimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24df8bae1dSRodney W. Grimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25df8bae1dSRodney W. Grimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26df8bae1dSRodney W. Grimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27df8bae1dSRodney W. Grimes * SUCH DAMAGE. 28df8bae1dSRodney W. Grimes * 29df8bae1dSRodney W. Grimes * @(#)if_ethersubr.c 8.1 (Berkeley) 6/10/93 30c3aac50fSPeter Wemm * $FreeBSD$ 31df8bae1dSRodney W. Grimes */ 32df8bae1dSRodney W. Grimes 337262d3e4SEivind Eklund #include "opt_atalk.h" 341d5e9e22SEivind Eklund #include "opt_inet.h" 35cfa1ca9dSYoshinobu Inoue #include "opt_inet6.h" 36430df5f4SEivind Eklund #include "opt_ipx.h" 37fb5fbe46SLuigi Rizzo #include "opt_bdg.h" 3843b29369SRobert Watson #include "opt_mac.h" 394cf49a43SJulian Elischer #include "opt_netgraph.h" 40430df5f4SEivind Eklund 41df8bae1dSRodney W. Grimes #include <sys/param.h> 42df8bae1dSRodney W. Grimes #include <sys/systm.h> 43df8bae1dSRodney W. Grimes #include <sys/kernel.h> 4443b29369SRobert Watson #include <sys/mac.h> 45df8bae1dSRodney W. Grimes #include <sys/malloc.h> 4641ee9f1cSPoul-Henning Kamp #include <sys/module.h> 47df8bae1dSRodney W. Grimes #include <sys/mbuf.h> 4810b1fde0SMark Murray #include <sys/random.h> 49df8bae1dSRodney W. Grimes #include <sys/socket.h> 5051a53488SBruce Evans #include <sys/sockio.h> 51602d513cSGarrett Wollman #include <sys/sysctl.h> 52df8bae1dSRodney W. Grimes 53df8bae1dSRodney W. Grimes #include <net/if.h> 54d7647d96SDag-Erling Smørgrav #include <net/if_arp.h> 55df8bae1dSRodney W. Grimes #include <net/netisr.h> 56df8bae1dSRodney W. Grimes #include <net/route.h> 57df8bae1dSRodney W. Grimes #include <net/if_llc.h> 58df8bae1dSRodney W. Grimes #include <net/if_dl.h> 59df8bae1dSRodney W. Grimes #include <net/if_types.h> 602e2de7f2SArchie Cobbs #include <net/bpf.h> 61e1e1452dSArchie Cobbs #include <net/ethernet.h> 62db69a05dSPaul Saab #include <net/bridge.h> 63c1d93b05SSam Leffler #include <net/if_vlan_var.h> 64df8bae1dSRodney W. Grimes 6582cd038dSYoshinobu Inoue #if defined(INET) || defined(INET6) 66df8bae1dSRodney W. Grimes #include <netinet/in.h> 67df8bae1dSRodney W. Grimes #include <netinet/in_var.h> 68df8bae1dSRodney W. Grimes #include <netinet/if_ether.h> 694b984093SLuigi Rizzo #include <netinet/ip_fw.h> 704b984093SLuigi Rizzo #include <netinet/ip_dummynet.h> 711d5e9e22SEivind Eklund #endif 7282cd038dSYoshinobu Inoue #ifdef INET6 7382cd038dSYoshinobu Inoue #include <netinet6/nd6.h> 7482cd038dSYoshinobu Inoue #endif 75df8bae1dSRodney W. Grimes 76cc6a66f2SJulian Elischer #ifdef IPX 77cc6a66f2SJulian Elischer #include <netipx/ipx.h> 78cc6a66f2SJulian Elischer #include <netipx/ipx_if.h> 794f93599fSBoris Popov int (*ef_inputp)(struct ifnet*, struct ether_header *eh, struct mbuf *m); 805accfb8cSBoris Popov int (*ef_outputp)(struct ifnet *ifp, struct mbuf **mp, 812a7e8eceSBoris Popov struct sockaddr *dst, short *tp, int *hlen); 82cc6a66f2SJulian Elischer #endif 83cc6a66f2SJulian Elischer 84655929bfSJulian Elischer #ifdef NETATALK 85655929bfSJulian Elischer #include <netatalk/at.h> 86655929bfSJulian Elischer #include <netatalk/at_var.h> 87655929bfSJulian Elischer #include <netatalk/at_extern.h> 88655929bfSJulian Elischer 89655929bfSJulian Elischer #define llc_snap_org_code llc_un.type_snap.org_code 90655929bfSJulian Elischer #define llc_snap_ether_type llc_un.type_snap.ether_type 91655929bfSJulian Elischer 92655929bfSJulian Elischer extern u_char at_org_code[3]; 93655929bfSJulian Elischer extern u_char aarp_org_code[3]; 942cc2df49SGarrett Wollman #endif /* NETATALK */ 952cc2df49SGarrett Wollman 96e1e1452dSArchie Cobbs /* netgraph node hooks for ng_ether(4) */ 97c1d93b05SSam Leffler void (*ng_ether_input_p)(struct ifnet *ifp, struct mbuf **mp); 98c1d93b05SSam Leffler void (*ng_ether_input_orphan_p)(struct ifnet *ifp, struct mbuf *m); 99e1e1452dSArchie Cobbs int (*ng_ether_output_p)(struct ifnet *ifp, struct mbuf **mp); 100e1e1452dSArchie Cobbs void (*ng_ether_attach_p)(struct ifnet *ifp); 101e1e1452dSArchie Cobbs void (*ng_ether_detach_p)(struct ifnet *ifp); 102e1e1452dSArchie Cobbs 103824eb9dcSDavid E. O'Brien void (*vlan_input_p)(struct ifnet *, struct mbuf *); 1049d4fe4b2SBrooks Davis 105db69a05dSPaul Saab /* bridge support */ 106cad15830SLuigi Rizzo int do_bridge; 107db69a05dSPaul Saab bridge_in_t *bridge_in_ptr; 108db69a05dSPaul Saab bdg_forward_t *bdg_forward_ptr; 109db69a05dSPaul Saab bdgtakeifaces_t *bdgtakeifaces_ptr; 110cad15830SLuigi Rizzo struct bdg_softc *ifp2sc; 111db69a05dSPaul Saab 112e589108dSRobert Watson static const u_char etherbroadcastaddr[ETHER_ADDR_LEN] = 113868d8b62SMatthew N. Dodd { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; 114868d8b62SMatthew N. Dodd 115929ddbbbSAlfred Perlstein static int ether_resolvemulti(struct ifnet *, struct sockaddr **, 116929ddbbbSAlfred Perlstein struct sockaddr *); 117868d8b62SMatthew N. Dodd 1184c8e8c05SJulian Elischer #define senderr(e) do { error = (e); goto bad;} while (0) 119df8bae1dSRodney W. Grimes 120d7647d96SDag-Erling Smørgrav #if defined(INET) || defined(INET6) 1214b984093SLuigi Rizzo int 1224b984093SLuigi Rizzo ether_ipfw_chk(struct mbuf **m0, struct ifnet *dst, 123c1d93b05SSam Leffler struct ip_fw **rule, int shared); 1244b984093SLuigi Rizzo static int ether_ipfw; 125d7647d96SDag-Erling Smørgrav #endif 1264b984093SLuigi Rizzo 127df8bae1dSRodney W. Grimes /* 128df8bae1dSRodney W. Grimes * Ethernet output routine. 129df8bae1dSRodney W. Grimes * Encapsulate a packet of type family for the local net. 130df8bae1dSRodney W. Grimes * Use trailer local net encapsulation if enough data in first 131df8bae1dSRodney W. Grimes * packet leaves a multiple of 512 bytes of data in remainder. 132df8bae1dSRodney W. Grimes * Assumes that ifp is actually pointer to arpcom structure. 133df8bae1dSRodney W. Grimes */ 134df8bae1dSRodney W. Grimes int 13572fd1b6aSDag-Erling Smørgrav ether_output(struct ifnet *ifp, struct mbuf *m, 13672fd1b6aSDag-Erling Smørgrav struct sockaddr *dst, struct rtentry *rt0) 137df8bae1dSRodney W. Grimes { 138df8bae1dSRodney W. Grimes short type; 139cd46a114SLuigi Rizzo int error, hdrcmplt = 0; 14064760eb0SWarner Losh u_char esrc[ETHER_ADDR_LEN], edst[ETHER_ADDR_LEN]; 141098a8c3bSMatthew N. Dodd struct ether_header *eh; 1429961e27dSLuigi Rizzo int loop_copy = 0; 143d32864c3SRobert Watson int hlen; /* link layer header length */ 144df8bae1dSRodney W. Grimes 14543b29369SRobert Watson #ifdef MAC 14643b29369SRobert Watson error = mac_check_ifnet_transmit(ifp, m); 14743b29369SRobert Watson if (error) 14843b29369SRobert Watson senderr(error); 14943b29369SRobert Watson #endif 15043b29369SRobert Watson 151afbe3a0fSPoul-Henning Kamp if (ifp->if_flags & IFF_MONITOR) 152afbe3a0fSPoul-Henning Kamp senderr(ENETDOWN); 153df8bae1dSRodney W. Grimes if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING)) 154df8bae1dSRodney W. Grimes senderr(ENETDOWN); 1557f760c48SMatthew N. Dodd 15684dd0fd0SJulian Elischer hlen = ETHER_HDR_LEN; 157df8bae1dSRodney W. Grimes switch (dst->sa_family) { 158df8bae1dSRodney W. Grimes #ifdef INET 159df8bae1dSRodney W. Grimes case AF_INET: 160cd46a114SLuigi Rizzo error = arpresolve(ifp, rt0, m, dst, edst); 161cd46a114SLuigi Rizzo if (error) 162cd46a114SLuigi Rizzo return (error == EWOULDBLOCK ? 0 : error); 16334bed8b0SDavid Greenman type = htons(ETHERTYPE_IP); 164df8bae1dSRodney W. Grimes break; 16543a6c75aSMatthew N. Dodd case AF_ARP: 16643a6c75aSMatthew N. Dodd { 16743a6c75aSMatthew N. Dodd struct arphdr *ah; 16843a6c75aSMatthew N. Dodd ah = mtod(m, struct arphdr *); 16943a6c75aSMatthew N. Dodd ah->ar_hrd = htons(ARPHRD_ETHER); 17043a6c75aSMatthew N. Dodd 17143a6c75aSMatthew N. Dodd loop_copy = -1; /* if this is for us, don't do it */ 17243a6c75aSMatthew N. Dodd 17343a6c75aSMatthew N. Dodd switch(ntohs(ah->ar_op)) { 17443a6c75aSMatthew N. Dodd case ARPOP_REVREQUEST: 17543a6c75aSMatthew N. Dodd case ARPOP_REVREPLY: 17643a6c75aSMatthew N. Dodd type = htons(ETHERTYPE_REVARP); 17743a6c75aSMatthew N. Dodd break; 17843a6c75aSMatthew N. Dodd case ARPOP_REQUEST: 17943a6c75aSMatthew N. Dodd case ARPOP_REPLY: 18043a6c75aSMatthew N. Dodd default: 18143a6c75aSMatthew N. Dodd type = htons(ETHERTYPE_ARP); 18243a6c75aSMatthew N. Dodd break; 18343a6c75aSMatthew N. Dodd } 18443a6c75aSMatthew N. Dodd 18543a6c75aSMatthew N. Dodd if (m->m_flags & M_BCAST) 18643a6c75aSMatthew N. Dodd bcopy(ifp->if_broadcastaddr, edst, ETHER_ADDR_LEN); 18743a6c75aSMatthew N. Dodd else 18843a6c75aSMatthew N. Dodd bcopy(ar_tha(ah), edst, ETHER_ADDR_LEN); 18943a6c75aSMatthew N. Dodd 19043a6c75aSMatthew N. Dodd } 19143a6c75aSMatthew N. Dodd break; 192df8bae1dSRodney W. Grimes #endif 19382cd038dSYoshinobu Inoue #ifdef INET6 19482cd038dSYoshinobu Inoue case AF_INET6: 195cd46a114SLuigi Rizzo error = nd6_storelladdr(ifp, rt0, m, dst, (u_char *)edst); 196cd46a114SLuigi Rizzo if (error) 197cd46a114SLuigi Rizzo return error; 19882cd038dSYoshinobu Inoue type = htons(ETHERTYPE_IPV6); 19982cd038dSYoshinobu Inoue break; 20082cd038dSYoshinobu Inoue #endif 201cc6a66f2SJulian Elischer #ifdef IPX 202cc6a66f2SJulian Elischer case AF_IPX: 2034f93599fSBoris Popov if (ef_outputp) { 2042a7e8eceSBoris Popov error = ef_outputp(ifp, &m, dst, &type, &hlen); 2055accfb8cSBoris Popov if (error) 2065accfb8cSBoris Popov goto bad; 2074f93599fSBoris Popov } else 20834bed8b0SDavid Greenman type = htons(ETHERTYPE_IPX); 209cc6a66f2SJulian Elischer bcopy((caddr_t)&(((struct sockaddr_ipx *)dst)->sipx_addr.x_host), 210cc6a66f2SJulian Elischer (caddr_t)edst, sizeof (edst)); 211cc6a66f2SJulian Elischer break; 212cc6a66f2SJulian Elischer #endif 213655929bfSJulian Elischer #ifdef NETATALK 214655929bfSJulian Elischer case AF_APPLETALK: 2151d0eab59SJulian Elischer { 216ed7509acSJulian Elischer struct at_ifaddr *aa; 2171d0eab59SJulian Elischer 218cd46a114SLuigi Rizzo if ((aa = at_ifawithnet((struct sockaddr_at *)dst)) == NULL) 219cd46a114SLuigi Rizzo senderr(EHOSTUNREACH); /* XXX */ 220cd46a114SLuigi Rizzo if (!aarpresolve(ifp, m, (struct sockaddr_at *)dst, edst)) 2211d0eab59SJulian Elischer return (0); 222655929bfSJulian Elischer /* 223ed7509acSJulian Elischer * In the phase 2 case, need to prepend an mbuf for the llc header. 224655929bfSJulian Elischer */ 225655929bfSJulian Elischer if ( aa->aa_flags & AFA_PHASE2 ) { 226655929bfSJulian Elischer struct llc llc; 227655929bfSJulian Elischer 228797f247bSMatthew N. Dodd M_PREPEND(m, LLC_SNAPFRAMELEN, M_TRYWAIT); 2292166ffe8SRobert Watson if (m == NULL) 2302166ffe8SRobert Watson senderr(ENOBUFS); 231655929bfSJulian Elischer llc.llc_dsap = llc.llc_ssap = LLC_SNAP_LSAP; 232655929bfSJulian Elischer llc.llc_control = LLC_UI; 233655929bfSJulian Elischer bcopy(at_org_code, llc.llc_snap_org_code, sizeof(at_org_code)); 234655929bfSJulian Elischer llc.llc_snap_ether_type = htons( ETHERTYPE_AT ); 235797f247bSMatthew N. Dodd bcopy(&llc, mtod(m, caddr_t), LLC_SNAPFRAMELEN); 23634bed8b0SDavid Greenman type = htons(m->m_pkthdr.len); 237797f247bSMatthew N. Dodd hlen = LLC_SNAPFRAMELEN + ETHER_HDR_LEN; 238655929bfSJulian Elischer } else { 23934bed8b0SDavid Greenman type = htons(ETHERTYPE_AT); 240655929bfSJulian Elischer } 241655929bfSJulian Elischer break; 242ed7509acSJulian Elischer } 2438cdfefbdSPeter Wemm #endif /* NETATALK */ 244df8bae1dSRodney W. Grimes 245114ae644SMike Smith case pseudo_AF_HDRCMPLT: 246114ae644SMike Smith hdrcmplt = 1; 247114ae644SMike Smith eh = (struct ether_header *)dst->sa_data; 248114ae644SMike Smith (void)memcpy(esrc, eh->ether_shost, sizeof (esrc)); 249114ae644SMike Smith /* FALLTHROUGH */ 250114ae644SMike Smith 251df8bae1dSRodney W. Grimes case AF_UNSPEC: 2529d3f194dSJulian Elischer loop_copy = -1; /* if this is for us, don't do it */ 253df8bae1dSRodney W. Grimes eh = (struct ether_header *)dst->sa_data; 25494a5d9b6SDavid Greenman (void)memcpy(edst, eh->ether_dhost, sizeof (edst)); 255df8bae1dSRodney W. Grimes type = eh->ether_type; 256df8bae1dSRodney W. Grimes break; 257df8bae1dSRodney W. Grimes 258df8bae1dSRodney W. Grimes default: 25929e1b85fSBrooks Davis if_printf(ifp, "can't handle af%d\n", dst->sa_family); 260df8bae1dSRodney W. Grimes senderr(EAFNOSUPPORT); 261df8bae1dSRodney W. Grimes } 262df8bae1dSRodney W. Grimes 263df8bae1dSRodney W. Grimes /* 264df8bae1dSRodney W. Grimes * Add local net header. If no space in first mbuf, 265df8bae1dSRodney W. Grimes * allocate another. 266df8bae1dSRodney W. Grimes */ 267797f247bSMatthew N. Dodd M_PREPEND(m, ETHER_HDR_LEN, M_DONTWAIT); 2682166ffe8SRobert Watson if (m == NULL) 269df8bae1dSRodney W. Grimes senderr(ENOBUFS); 270df8bae1dSRodney W. Grimes eh = mtod(m, struct ether_header *); 27194a5d9b6SDavid Greenman (void)memcpy(&eh->ether_type, &type, 272df8bae1dSRodney W. Grimes sizeof(eh->ether_type)); 27394a5d9b6SDavid Greenman (void)memcpy(eh->ether_dhost, edst, sizeof (edst)); 274114ae644SMike Smith if (hdrcmplt) 275114ae644SMike Smith (void)memcpy(eh->ether_shost, esrc, 276114ae644SMike Smith sizeof(eh->ether_shost)); 277114ae644SMike Smith else 27849572c5bSLuigi Rizzo (void)memcpy(eh->ether_shost, IFP2AC(ifp)->ac_enaddr, 279df8bae1dSRodney W. Grimes sizeof(eh->ether_shost)); 280ed7509acSJulian Elischer 281ed7509acSJulian Elischer /* 282ed7509acSJulian Elischer * If a simplex interface, and the packet is being sent to our 283ed7509acSJulian Elischer * Ethernet address or a broadcast address, loopback a copy. 284ed7509acSJulian Elischer * XXX To make a simplex device behave exactly like a duplex 285ed7509acSJulian Elischer * device, we should copy in the case of sending to our own 286ed7509acSJulian Elischer * ethernet address (thus letting the original actually appear 287ed7509acSJulian Elischer * on the wire). However, we don't do that here for security 288ed7509acSJulian Elischer * reasons and compatibility with the original behavior. 289ed7509acSJulian Elischer */ 2904c8e8c05SJulian Elischer if ((ifp->if_flags & IFF_SIMPLEX) && (loop_copy != -1)) { 2913cd67511SJesper Skriver int csum_flags = 0; 2923cd67511SJesper Skriver 2933cd67511SJesper Skriver if (m->m_pkthdr.csum_flags & CSUM_IP) 2943cd67511SJesper Skriver csum_flags |= (CSUM_IP_CHECKED|CSUM_IP_VALID); 2953cd67511SJesper Skriver if (m->m_pkthdr.csum_flags & CSUM_DELAY_DATA) 2963cd67511SJesper Skriver csum_flags |= (CSUM_DATA_VALID|CSUM_PSEUDO_HDR); 29706f684b0SMatthew N. Dodd 2989d3f194dSJulian Elischer if ((m->m_flags & M_BCAST) || (loop_copy > 0)) { 29906f684b0SMatthew N. Dodd struct mbuf *n; 300ed7509acSJulian Elischer 30179db6ff3SArchie Cobbs if ((n = m_copy(m, 0, (int)M_COPYALL)) != NULL) { 3023cd67511SJesper Skriver n->m_pkthdr.csum_flags |= csum_flags; 3033cd67511SJesper Skriver if (csum_flags & CSUM_DATA_VALID) 3043cd67511SJesper Skriver n->m_pkthdr.csum_data = 0xffff; 30506a429a3SArchie Cobbs (void)if_simloop(ifp, n, dst->sa_family, hlen); 306c1404dc0SArchie Cobbs } else 307c1404dc0SArchie Cobbs ifp->if_iqdrops++; 30806f684b0SMatthew N. Dodd } else if (bcmp(eh->ether_dhost, eh->ether_shost, 30906f684b0SMatthew N. Dodd ETHER_ADDR_LEN) == 0) { 3103cd67511SJesper Skriver m->m_pkthdr.csum_flags |= csum_flags; 3113cd67511SJesper Skriver if (csum_flags & CSUM_DATA_VALID) 3123cd67511SJesper Skriver m->m_pkthdr.csum_data = 0xffff; 31306a429a3SArchie Cobbs (void) if_simloop(ifp, m, dst->sa_family, hlen); 314ed7509acSJulian Elischer return (0); /* XXX */ 315ed7509acSJulian Elischer } 316ed7509acSJulian Elischer } 3172e2de7f2SArchie Cobbs 318e1e1452dSArchie Cobbs /* Handle ng_ether(4) processing, if any */ 319e1e1452dSArchie Cobbs if (ng_ether_output_p != NULL) { 320e1e1452dSArchie Cobbs if ((error = (*ng_ether_output_p)(ifp, &m)) != 0) { 321e1e1452dSArchie Cobbs bad: if (m != NULL) 322e1e1452dSArchie Cobbs m_freem(m); 323e1e1452dSArchie Cobbs return (error); 324e1e1452dSArchie Cobbs } 325e1e1452dSArchie Cobbs if (m == NULL) 326e1e1452dSArchie Cobbs return (0); 327e1e1452dSArchie Cobbs } 328e1e1452dSArchie Cobbs 329e1e1452dSArchie Cobbs /* Continue with link-layer output */ 330e1e1452dSArchie Cobbs return ether_output_frame(ifp, m); 331e1e1452dSArchie Cobbs } 332e1e1452dSArchie Cobbs 333e1e1452dSArchie Cobbs /* 334e1e1452dSArchie Cobbs * Ethernet link layer output routine to send a raw frame to the device. 335e1e1452dSArchie Cobbs * 336e1e1452dSArchie Cobbs * This assumes that the 14 byte Ethernet header is present and contiguous 337e1e1452dSArchie Cobbs * in the first mbuf (if BRIDGE'ing). 338e1e1452dSArchie Cobbs */ 339e1e1452dSArchie Cobbs int 340c1d93b05SSam Leffler ether_output_frame(struct ifnet *ifp, struct mbuf *m) 341e1e1452dSArchie Cobbs { 342d7647d96SDag-Erling Smørgrav #if defined(INET) || defined(INET6) 343ac9d7e26SMax Laier struct ip_fw *rule = ip_dn_claim_rule(m); 344d7647d96SDag-Erling Smørgrav #else 345d7647d96SDag-Erling Smørgrav void *rule = NULL; 346d7647d96SDag-Erling Smørgrav #endif 347affc907dSMax Laier int error; 3482b25acc1SLuigi Rizzo 349c1d93b05SSam Leffler if (rule == NULL && BDG_ACTIVE(ifp)) { 350c1d93b05SSam Leffler /* 351c1d93b05SSam Leffler * Beware, the bridge code notices the null rcvif and 352c1d93b05SSam Leffler * uses that identify that it's being called from 353c1d93b05SSam Leffler * ether_output as opposd to ether_input. Yech. 354c1d93b05SSam Leffler */ 355fb5fbe46SLuigi Rizzo m->m_pkthdr.rcvif = NULL; 356c1d93b05SSam Leffler m = bdg_forward_ptr(m, ifp); 3572e2de7f2SArchie Cobbs if (m != NULL) 3582e2de7f2SArchie Cobbs m_freem(m); 3591db59ce6SEivind Eklund return (0); 360fb5fbe46SLuigi Rizzo } 361d7647d96SDag-Erling Smørgrav #if defined(INET) || defined(INET6) 3624b984093SLuigi Rizzo if (IPFW_LOADED && ether_ipfw != 0) { 363c1d93b05SSam Leffler if (ether_ipfw_chk(&m, ifp, &rule, 0) == 0) { 3644b984093SLuigi Rizzo if (m) { 3654b984093SLuigi Rizzo m_freem(m); 366e7909401SDavid Malone return EACCES; /* pkt dropped */ 3674b984093SLuigi Rizzo } else 3684b984093SLuigi Rizzo return 0; /* consumed e.g. in a pipe */ 3694b984093SLuigi Rizzo } 3704b984093SLuigi Rizzo } 371d7647d96SDag-Erling Smørgrav #endif 3722b25acc1SLuigi Rizzo 373df8bae1dSRodney W. Grimes /* 374df5e1987SJonathan Lemon * Queue message on interface, update output statistics if 375df5e1987SJonathan Lemon * successful, and start output if interface not yet active. 376df8bae1dSRodney W. Grimes */ 377affc907dSMax Laier IFQ_HANDOFF(ifp, m, error); 378affc907dSMax Laier return (error); 379df8bae1dSRodney W. Grimes } 380df8bae1dSRodney W. Grimes 381d7647d96SDag-Erling Smørgrav #if defined(INET) || defined(INET6) 382df8bae1dSRodney W. Grimes /* 3834b984093SLuigi Rizzo * ipfw processing for ethernet packets (in and out). 3844b984093SLuigi Rizzo * The second parameter is NULL from ether_demux, and ifp from 3854b984093SLuigi Rizzo * ether_output_frame. This section of code could be used from 3862f8ebbf4SLuigi Rizzo * bridge.c as well as long as we use some extra info 3874b984093SLuigi Rizzo * to distinguish that case from ether_output_frame(); 3884b984093SLuigi Rizzo */ 3894b984093SLuigi Rizzo int 3904b984093SLuigi Rizzo ether_ipfw_chk(struct mbuf **m0, struct ifnet *dst, 391c1d93b05SSam Leffler struct ip_fw **rule, int shared) 3924b984093SLuigi Rizzo { 393c1d93b05SSam Leffler struct ether_header *eh; 394c1d93b05SSam Leffler struct ether_header save_eh; 395c1d93b05SSam Leffler struct mbuf *m; 3964b984093SLuigi Rizzo int i; 3972b25acc1SLuigi Rizzo struct ip_fw_args args; 3984b984093SLuigi Rizzo 39997850a5dSLuigi Rizzo if (*rule != NULL && fw_one_pass) 400015d72e0SLuigi Rizzo return 1; /* dummynet packet, already partially processed */ 4012f8ebbf4SLuigi Rizzo 4024b984093SLuigi Rizzo /* 4032f8ebbf4SLuigi Rizzo * I need some amt of data to be contiguous, and in case others need 4044b984093SLuigi Rizzo * the packet (shared==1) also better be in the first mbuf. 4054b984093SLuigi Rizzo */ 406c1d93b05SSam Leffler m = *m0; 407c1d93b05SSam Leffler i = min( m->m_pkthdr.len, max_protohdr); 408c1d93b05SSam Leffler if ( shared || m->m_len < i) { 409c1d93b05SSam Leffler m = m_pullup(m, i); 410c1d93b05SSam Leffler if (m == NULL) { 411c1d93b05SSam Leffler *m0 = m; 4124b984093SLuigi Rizzo return 0; 4134b984093SLuigi Rizzo } 414c1d93b05SSam Leffler } 415c1d93b05SSam Leffler eh = mtod(m, struct ether_header *); 416c1d93b05SSam Leffler save_eh = *eh; /* save copy for restore below */ 417c1d93b05SSam Leffler m_adj(m, ETHER_HDR_LEN); /* strip ethernet header */ 4184b984093SLuigi Rizzo 419c1d93b05SSam Leffler args.m = m; /* the packet we are looking at */ 4202b25acc1SLuigi Rizzo args.oif = dst; /* destination, if any */ 4212b25acc1SLuigi Rizzo args.rule = *rule; /* matching rule to restart */ 4222b25acc1SLuigi Rizzo args.next_hop = NULL; /* we do not support forward yet */ 4232b25acc1SLuigi Rizzo args.eh = &save_eh; /* MAC header for bridged/MAC packets */ 4242b25acc1SLuigi Rizzo i = ip_fw_chk_ptr(&args); 425c1d93b05SSam Leffler m = args.m; 426c1d93b05SSam Leffler if (m != NULL) { 427c1d93b05SSam Leffler /* 428c1d93b05SSam Leffler * Restore Ethernet header, as needed, in case the 429c1d93b05SSam Leffler * mbuf chain was replaced by ipfw. 430c1d93b05SSam Leffler */ 431a163d034SWarner Losh M_PREPEND(m, ETHER_HDR_LEN, M_DONTWAIT); 432c1d93b05SSam Leffler if (m == NULL) { 433c1d93b05SSam Leffler *m0 = m; 434c1d93b05SSam Leffler return 0; 435c1d93b05SSam Leffler } 436c1d93b05SSam Leffler if (eh != mtod(m, struct ether_header *)) 437c1d93b05SSam Leffler bcopy(&save_eh, mtod(m, struct ether_header *), 438c1d93b05SSam Leffler ETHER_HDR_LEN); 439c1d93b05SSam Leffler } 440c1d93b05SSam Leffler *m0 = m; 4412b25acc1SLuigi Rizzo *rule = args.rule; 4422b25acc1SLuigi Rizzo 443c1d93b05SSam Leffler if ( (i & IP_FW_PORT_DENY_FLAG) || m == NULL) /* drop */ 4444b984093SLuigi Rizzo return 0; 4454b984093SLuigi Rizzo 4464b984093SLuigi Rizzo if (i == 0) /* a PASS rule. */ 4474b984093SLuigi Rizzo return 1; 4484b984093SLuigi Rizzo 4494b984093SLuigi Rizzo if (DUMMYNET_LOADED && (i & IP_FW_PORT_DYNT_FLAG)) { 4504b984093SLuigi Rizzo /* 4514b984093SLuigi Rizzo * Pass the pkt to dummynet, which consumes it. 4524b984093SLuigi Rizzo * If shared, make a copy and keep the original. 4534b984093SLuigi Rizzo */ 4544b984093SLuigi Rizzo if (shared) { 455a163d034SWarner Losh m = m_copypacket(m, M_DONTWAIT); 4562b25acc1SLuigi Rizzo if (m == NULL) 4574b984093SLuigi Rizzo return 0; 4584b984093SLuigi Rizzo } else { 4592b25acc1SLuigi Rizzo /* 460c1d93b05SSam Leffler * Pass the original to dummynet and 461c1d93b05SSam Leffler * nothing back to the caller 4622b25acc1SLuigi Rizzo */ 463c1d93b05SSam Leffler *m0 = NULL ; 4644b984093SLuigi Rizzo } 4652b25acc1SLuigi Rizzo ip_dn_io_ptr(m, (i & 0xffff), 4662b25acc1SLuigi Rizzo dst ? DN_TO_ETH_OUT: DN_TO_ETH_DEMUX, &args); 4674b984093SLuigi Rizzo return 0; 4684b984093SLuigi Rizzo } 4694b984093SLuigi Rizzo /* 4702f8ebbf4SLuigi Rizzo * XXX at some point add support for divert/forward actions. 4712f8ebbf4SLuigi Rizzo * If none of the above matches, we have to drop the pkt. 4724b984093SLuigi Rizzo */ 4734b984093SLuigi Rizzo return 0; 4744b984093SLuigi Rizzo } 475d7647d96SDag-Erling Smørgrav #endif 4764b984093SLuigi Rizzo 4774b984093SLuigi Rizzo /* 478c1d93b05SSam Leffler * Process a received Ethernet packet; the packet is in the 479c1d93b05SSam Leffler * mbuf chain m with the ethernet header at the front. 480df8bae1dSRodney W. Grimes */ 481c1d93b05SSam Leffler static void 482c1d93b05SSam Leffler ether_input(struct ifnet *ifp, struct mbuf *m) 483df8bae1dSRodney W. Grimes { 484c1d93b05SSam Leffler struct ether_header *eh; 485c1d93b05SSam Leffler u_short etype; 486df8bae1dSRodney W. Grimes 487c1d93b05SSam Leffler /* 488c1d93b05SSam Leffler * Do consistency checks to verify assumptions 489c1d93b05SSam Leffler * made by code past this point. 490c1d93b05SSam Leffler */ 491c1d93b05SSam Leffler if ((m->m_flags & M_PKTHDR) == 0) { 492c1d93b05SSam Leffler if_printf(ifp, "discard frame w/o packet header\n"); 493c1d93b05SSam Leffler ifp->if_ierrors++; 494c939f1aeSLuigi Rizzo m_freem(m); 495c939f1aeSLuigi Rizzo return; 496c939f1aeSLuigi Rizzo } 497797f247bSMatthew N. Dodd if (m->m_len < ETHER_HDR_LEN) { 498c1d93b05SSam Leffler /* XXX maybe should pullup? */ 499c1d93b05SSam Leffler if_printf(ifp, "discard frame w/o leading ethernet " 500c1d93b05SSam Leffler "header (len %u pkt len %u)\n", 501c1d93b05SSam Leffler m->m_len, m->m_pkthdr.len); 502c1d93b05SSam Leffler ifp->if_ierrors++; 503c1d93b05SSam Leffler m_freem(m); 504c1d93b05SSam Leffler return; 5052e2de7f2SArchie Cobbs } 506c1d93b05SSam Leffler eh = mtod(m, struct ether_header *); 507c1d93b05SSam Leffler etype = ntohs(eh->ether_type); 508c1d93b05SSam Leffler if (m->m_pkthdr.len > 509c1d93b05SSam Leffler ETHER_MAX_FRAME(ifp, etype, m->m_flags & M_HASFCS)) { 510c1d93b05SSam Leffler if_printf(ifp, "discard oversize frame " 511c1d93b05SSam Leffler "(ether type %x flags %x len %u > max %lu)\n", 512c1d93b05SSam Leffler etype, m->m_flags, m->m_pkthdr.len, 513c1d93b05SSam Leffler ETHER_MAX_FRAME(ifp, etype, 514c1d93b05SSam Leffler m->m_flags & M_HASFCS)); 515c1d93b05SSam Leffler ifp->if_ierrors++; 516c1d93b05SSam Leffler m_freem(m); 517c1d93b05SSam Leffler return; 518c1d93b05SSam Leffler } 519c1d93b05SSam Leffler if (m->m_pkthdr.rcvif == NULL) { 520c1d93b05SSam Leffler if_printf(ifp, "discard frame w/o interface pointer\n"); 521c1d93b05SSam Leffler ifp->if_ierrors++; 522c1d93b05SSam Leffler m_freem(m); 523c1d93b05SSam Leffler return; 524c1d93b05SSam Leffler } 525c1d93b05SSam Leffler #ifdef DIAGNOSTIC 526c1d93b05SSam Leffler if (m->m_pkthdr.rcvif != ifp) { 5279bf40edeSBrooks Davis if_printf(ifp, "Warning, frame marked as received on %s\n", 5289bf40edeSBrooks Davis m->m_pkthdr.rcvif->if_xname); 529c1d93b05SSam Leffler } 530c1d93b05SSam Leffler #endif 531c1d93b05SSam Leffler 532533d8562SRobert Watson #ifdef MAC 533533d8562SRobert Watson /* 534533d8562SRobert Watson * Tag the mbuf with an appropriate MAC label before any other 535533d8562SRobert Watson * consumers can get to it. 536533d8562SRobert Watson */ 537533d8562SRobert Watson mac_create_mbuf_from_ifnet(ifp, m); 538533d8562SRobert Watson #endif 539533d8562SRobert Watson 540c1d93b05SSam Leffler /* 541c1d93b05SSam Leffler * Give bpf a chance at the packet. 542c1d93b05SSam Leffler */ 543c1d93b05SSam Leffler BPF_MTAP(ifp, m); 5442e2de7f2SArchie Cobbs 545afbe3a0fSPoul-Henning Kamp if (ifp->if_flags & IFF_MONITOR) { 546c1d93b05SSam Leffler /* 547c1d93b05SSam Leffler * Interface marked for monitoring; discard packet. 548c1d93b05SSam Leffler */ 549afbe3a0fSPoul-Henning Kamp m_freem(m); 550afbe3a0fSPoul-Henning Kamp return; 551afbe3a0fSPoul-Henning Kamp } 552afbe3a0fSPoul-Henning Kamp 553c1d93b05SSam Leffler /* If the CRC is still on the packet, trim it off. */ 554c1d93b05SSam Leffler if (m->m_flags & M_HASFCS) { 555c1d93b05SSam Leffler m_adj(m, -ETHER_CRC_LEN); 556c1d93b05SSam Leffler m->m_flags &= ~M_HASFCS; 557c1d93b05SSam Leffler } 558c1d93b05SSam Leffler 559c1d93b05SSam Leffler ifp->if_ibytes += m->m_pkthdr.len; 56005463bb5SDavid Greenman 561e1e1452dSArchie Cobbs /* Handle ng_ether(4) processing, if any */ 562e1e1452dSArchie Cobbs if (ng_ether_input_p != NULL) { 563c1d93b05SSam Leffler (*ng_ether_input_p)(ifp, &m); 564e1e1452dSArchie Cobbs if (m == NULL) 565e1e1452dSArchie Cobbs return; 566e1e1452dSArchie Cobbs } 567e1e1452dSArchie Cobbs 5682e2de7f2SArchie Cobbs /* Check for bridging mode */ 5697b109fa4SLuigi Rizzo if (BDG_ACTIVE(ifp) ) { 5702e2de7f2SArchie Cobbs struct ifnet *bif; 5712e2de7f2SArchie Cobbs 572c1d93b05SSam Leffler /* 573c1d93b05SSam Leffler * Check with bridging code to see how the packet 574c1d93b05SSam Leffler * should be handled. Possibilities are: 575c1d93b05SSam Leffler * 576c1d93b05SSam Leffler * BDG_BCAST broadcast 577c1d93b05SSam Leffler * BDG_MCAST multicast 578c1d93b05SSam Leffler * BDG_LOCAL for local address, don't forward 579c1d93b05SSam Leffler * BDG_DROP discard 580c1d93b05SSam Leffler * ifp forward only to specified interface(s) 581c1d93b05SSam Leffler * 582c1d93b05SSam Leffler * Non-local destinations are handled by passing the 583c1d93b05SSam Leffler * packet back to the bridge code. 584c1d93b05SSam Leffler */ 585c1d93b05SSam Leffler bif = bridge_in_ptr(ifp, eh); 586c1d93b05SSam Leffler if (bif == BDG_DROP) { /* discard packet */ 5872e2de7f2SArchie Cobbs m_freem(m); 5882e2de7f2SArchie Cobbs return; 5892e2de7f2SArchie Cobbs } 590c1d93b05SSam Leffler if (bif != BDG_LOCAL) { /* non-local, forward */ 591c1d93b05SSam Leffler m = bdg_forward_ptr(m, bif); 592ddacb30fSBosko Milekic /* 593c1d93b05SSam Leffler * The bridge may consume the packet if it's not 594c1d93b05SSam Leffler * supposed to be passed up or if a problem occurred 595c1d93b05SSam Leffler * while doing its job. This is reflected by it 596c1d93b05SSam Leffler * returning a NULL mbuf pointer. 597ddacb30fSBosko Milekic */ 598507b4b54SLuigi Rizzo if (m == NULL) { 599507b4b54SLuigi Rizzo if (bif == BDG_BCAST || bif == BDG_MCAST) 600c1d93b05SSam Leffler if_printf(ifp, 601c1d93b05SSam Leffler "bridge dropped %s packet\n", 602c1d93b05SSam Leffler bif == BDG_BCAST ? "broadcast" : 603c1d93b05SSam Leffler "multicast"); 604ddacb30fSBosko Milekic return; 605ddacb30fSBosko Milekic } 606c1d93b05SSam Leffler /* 607c1d93b05SSam Leffler * But in some cases the bridge may return the 608c1d93b05SSam Leffler * packet for us to free; sigh. 609c1d93b05SSam Leffler */ 610c1d93b05SSam Leffler if (bif != BDG_BCAST && bif != BDG_MCAST) { 6112e2de7f2SArchie Cobbs m_freem(m); 6122e2de7f2SArchie Cobbs return; 6132e2de7f2SArchie Cobbs } 614c1d93b05SSam Leffler } 615c1d93b05SSam Leffler } 6162e2de7f2SArchie Cobbs 617c1d93b05SSam Leffler ether_demux(ifp, m); 618a6ddbff0SPoul-Henning Kamp /* First chunk of an mbuf contains good entropy */ 61910b1fde0SMark Murray if (harvest.ethernet) 62010b1fde0SMark Murray random_harvest(m, 16, 3, 0, RANDOM_NET); 621e1e1452dSArchie Cobbs } 622e1e1452dSArchie Cobbs 623e1e1452dSArchie Cobbs /* 624e1e1452dSArchie Cobbs * Upper layer processing for a received Ethernet packet. 625e1e1452dSArchie Cobbs */ 626e1e1452dSArchie Cobbs void 627c1d93b05SSam Leffler ether_demux(struct ifnet *ifp, struct mbuf *m) 628e1e1452dSArchie Cobbs { 629c1d93b05SSam Leffler struct ether_header *eh; 6301cafed39SJonathan Lemon int isr; 631e1e1452dSArchie Cobbs u_short ether_type; 632e1e1452dSArchie Cobbs #if defined(NETATALK) 633098a8c3bSMatthew N. Dodd struct llc *l; 634e1e1452dSArchie Cobbs #endif 635d7647d96SDag-Erling Smørgrav #if defined(INET) || defined(INET6) 636ac9d7e26SMax Laier struct ip_fw *rule = ip_dn_claim_rule(m); 637d7647d96SDag-Erling Smørgrav #endif 63836e8826fSMax Laier 639c1d93b05SSam Leffler KASSERT(ifp != NULL, ("ether_demux: NULL interface pointer")); 640c1d93b05SSam Leffler 641c1d93b05SSam Leffler eh = mtod(m, struct ether_header *); 642cd0cd014SJoerg Wunsch ether_type = ntohs(eh->ether_type); 643c1d93b05SSam Leffler 644d7647d96SDag-Erling Smørgrav #if defined(INET) || defined(INET6) 6452b25acc1SLuigi Rizzo if (rule) /* packet was already bridged */ 6462b25acc1SLuigi Rizzo goto post_stats; 647d7647d96SDag-Erling Smørgrav #endif 6484b984093SLuigi Rizzo 649cd0cd014SJoerg Wunsch if (!(BDG_ACTIVE(ifp)) && 650cd0cd014SJoerg Wunsch !(ether_type == ETHERTYPE_VLAN && ifp->if_nvlans > 0)) { 651c6943100SPoul-Henning Kamp /* 652c6943100SPoul-Henning Kamp * Discard packet if upper layers shouldn't see it because it 653c6943100SPoul-Henning Kamp * was unicast to a different Ethernet address. If the driver 654c6943100SPoul-Henning Kamp * is working properly, then this situation can only happen 655c6943100SPoul-Henning Kamp * when the interface is in promiscuous mode. 656cd0cd014SJoerg Wunsch * 657cd0cd014SJoerg Wunsch * If VLANs are active, and this packet has a VLAN tag, do 658cd0cd014SJoerg Wunsch * not drop it here but pass it on to the VLAN layer, to 659cd0cd014SJoerg Wunsch * give them a chance to consider it as well (e. g. in case 660cd0cd014SJoerg Wunsch * bridging is only active on a VLAN). They will drop it if 661cd0cd014SJoerg Wunsch * it's undesired. 662c6943100SPoul-Henning Kamp */ 663cb24f323SArchie Cobbs if ((ifp->if_flags & IFF_PROMISC) != 0 664cb24f323SArchie Cobbs && (eh->ether_dhost[0] & 1) == 0 665cb24f323SArchie Cobbs && bcmp(eh->ether_dhost, 666ffb079beSMaxim Sobolev IFP2AC(ifp)->ac_enaddr, ETHER_ADDR_LEN) != 0 66725faf49dSMaxim Sobolev && (ifp->if_flags & IFF_PPROMISC) == 0) { 668cb24f323SArchie Cobbs m_freem(m); 669cb24f323SArchie Cobbs return; 670cb24f323SArchie Cobbs } 671c6943100SPoul-Henning Kamp } 672cb24f323SArchie Cobbs 6732e2de7f2SArchie Cobbs /* Discard packet if interface is not up */ 674df8bae1dSRodney W. Grimes if ((ifp->if_flags & IFF_UP) == 0) { 675df8bae1dSRodney W. Grimes m_freem(m); 676df8bae1dSRodney W. Grimes return; 677df8bae1dSRodney W. Grimes } 678588523faSSam Leffler if (ETHER_IS_MULTICAST(eh->ether_dhost)) { 67964760eb0SWarner Losh if (bcmp(etherbroadcastaddr, eh->ether_dhost, 680df8bae1dSRodney W. Grimes sizeof(etherbroadcastaddr)) == 0) 681df8bae1dSRodney W. Grimes m->m_flags |= M_BCAST; 6822cc2df49SGarrett Wollman else 683df8bae1dSRodney W. Grimes m->m_flags |= M_MCAST; 6842cc2df49SGarrett Wollman } 685df8bae1dSRodney W. Grimes if (m->m_flags & (M_BCAST|M_MCAST)) 686df8bae1dSRodney W. Grimes ifp->if_imcasts++; 687df8bae1dSRodney W. Grimes 688d7647d96SDag-Erling Smørgrav #if defined(INET) || defined(INET6) 6894b984093SLuigi Rizzo post_stats: 6904b984093SLuigi Rizzo if (IPFW_LOADED && ether_ipfw != 0) { 691c1d93b05SSam Leffler if (ether_ipfw_chk(&m, NULL, &rule, 0) == 0) { 6924b984093SLuigi Rizzo if (m) 6934b984093SLuigi Rizzo m_freem(m); 6944b984093SLuigi Rizzo return; 6954b984093SLuigi Rizzo } 6964b984093SLuigi Rizzo } 697d7647d96SDag-Erling Smørgrav #endif 6984b984093SLuigi Rizzo 699c1d93b05SSam Leffler /* 700c1d93b05SSam Leffler * If VLANs are configured on the interface, check to 701c1d93b05SSam Leffler * see if the device performed the decapsulation and 702c1d93b05SSam Leffler * provided us with the tag. 703c1d93b05SSam Leffler */ 704c1d93b05SSam Leffler if (ifp->if_nvlans && 705c1d93b05SSam Leffler m_tag_locate(m, MTAG_VLAN, MTAG_VLAN_TAG, NULL) != NULL) { 706c1d93b05SSam Leffler /* 707c1d93b05SSam Leffler * vlan_input() will either recursively call ether_input() 708c1d93b05SSam Leffler * or drop the packet. 709c1d93b05SSam Leffler */ 710c1d93b05SSam Leffler KASSERT(vlan_input_p != NULL,("ether_input: VLAN not loaded!")); 711c1d93b05SSam Leffler (*vlan_input_p)(ifp, m); 712c1d93b05SSam Leffler return; 713c1d93b05SSam Leffler } 714c1d93b05SSam Leffler 715c1d93b05SSam Leffler /* 716c1d93b05SSam Leffler * Handle protocols that expect to have the Ethernet header 717c1d93b05SSam Leffler * (and possibly FCS) intact. 718c1d93b05SSam Leffler */ 719c1d93b05SSam Leffler switch (ether_type) { 720c1d93b05SSam Leffler case ETHERTYPE_VLAN: 721c1d93b05SSam Leffler if (ifp->if_nvlans != 0) { 722c1d93b05SSam Leffler KASSERT(vlan_input_p,("ether_input: VLAN not loaded!")); 723c1d93b05SSam Leffler (*vlan_input_p)(ifp, m); 724c1d93b05SSam Leffler } else { 725c1d93b05SSam Leffler ifp->if_noproto++; 726c1d93b05SSam Leffler m_freem(m); 727c1d93b05SSam Leffler } 728c1d93b05SSam Leffler return; 729c1d93b05SSam Leffler } 730c1d93b05SSam Leffler 731c1d93b05SSam Leffler /* Strip off Ethernet header. */ 732797f247bSMatthew N. Dodd m_adj(m, ETHER_HDR_LEN); 733c1d93b05SSam Leffler 734c1d93b05SSam Leffler /* If the CRC is still on the packet, trim it off. */ 735c1d93b05SSam Leffler if (m->m_flags & M_HASFCS) { 736c1d93b05SSam Leffler m_adj(m, -ETHER_CRC_LEN); 737c1d93b05SSam Leffler m->m_flags &= ~M_HASFCS; 738c1d93b05SSam Leffler } 739c1d93b05SSam Leffler 740307d80beSDavid Greenman switch (ether_type) { 741df8bae1dSRodney W. Grimes #ifdef INET 742df8bae1dSRodney W. Grimes case ETHERTYPE_IP: 7439188b4a1SAndre Oppermann if (ip_fastforward(m)) 7441f91d8c5SDavid Greenman return; 7451cafed39SJonathan Lemon isr = NETISR_IP; 746df8bae1dSRodney W. Grimes break; 747df8bae1dSRodney W. Grimes 748df8bae1dSRodney W. Grimes case ETHERTYPE_ARP: 74908aadfbbSJonathan Lemon if (ifp->if_flags & IFF_NOARP) { 75008aadfbbSJonathan Lemon /* Discard packet if ARP is disabled on interface */ 75108aadfbbSJonathan Lemon m_freem(m); 75208aadfbbSJonathan Lemon return; 75308aadfbbSJonathan Lemon } 7541cafed39SJonathan Lemon isr = NETISR_ARP; 755df8bae1dSRodney W. Grimes break; 756df8bae1dSRodney W. Grimes #endif 757cc6a66f2SJulian Elischer #ifdef IPX 758cc6a66f2SJulian Elischer case ETHERTYPE_IPX: 7594f93599fSBoris Popov if (ef_inputp && ef_inputp(ifp, eh, m) == 0) 7604f93599fSBoris Popov return; 7611cafed39SJonathan Lemon isr = NETISR_IPX; 762cc6a66f2SJulian Elischer break; 763cc6a66f2SJulian Elischer #endif 76482cd038dSYoshinobu Inoue #ifdef INET6 76582cd038dSYoshinobu Inoue case ETHERTYPE_IPV6: 7661cafed39SJonathan Lemon isr = NETISR_IPV6; 76782cd038dSYoshinobu Inoue break; 76882cd038dSYoshinobu Inoue #endif 769655929bfSJulian Elischer #ifdef NETATALK 770655929bfSJulian Elischer case ETHERTYPE_AT: 7711cafed39SJonathan Lemon isr = NETISR_ATALK1; 772655929bfSJulian Elischer break; 773655929bfSJulian Elischer case ETHERTYPE_AARP: 7741cafed39SJonathan Lemon isr = NETISR_AARP; 7751cafed39SJonathan Lemon break; 7768cdfefbdSPeter Wemm #endif /* NETATALK */ 777df8bae1dSRodney W. Grimes default: 7784f93599fSBoris Popov #ifdef IPX 7794f93599fSBoris Popov if (ef_inputp && ef_inputp(ifp, eh, m) == 0) 7804f93599fSBoris Popov return; 7814f93599fSBoris Popov #endif /* IPX */ 782242c5536SPeter Wemm #if defined(NETATALK) 783307d80beSDavid Greenman if (ether_type > ETHERMTU) 784c1d93b05SSam Leffler goto discard; 785df8bae1dSRodney W. Grimes l = mtod(m, struct llc *); 7861cafed39SJonathan Lemon if (l->llc_dsap == LLC_SNAP_LSAP && 7871cafed39SJonathan Lemon l->llc_ssap == LLC_SNAP_LSAP && 7881cafed39SJonathan Lemon l->llc_control == LLC_UI) { 7894158372fSLuigi Rizzo if (bcmp(&(l->llc_snap_org_code)[0], at_org_code, 790655929bfSJulian Elischer sizeof(at_org_code)) == 0 && 791655929bfSJulian Elischer ntohs(l->llc_snap_ether_type) == ETHERTYPE_AT) { 792797f247bSMatthew N. Dodd m_adj(m, LLC_SNAPFRAMELEN); 7931cafed39SJonathan Lemon isr = NETISR_ATALK2; 794655929bfSJulian Elischer break; 795655929bfSJulian Elischer } 7964158372fSLuigi Rizzo if (bcmp(&(l->llc_snap_org_code)[0], aarp_org_code, 797655929bfSJulian Elischer sizeof(aarp_org_code)) == 0 && 798655929bfSJulian Elischer ntohs(l->llc_snap_ether_type) == ETHERTYPE_AARP) { 799797f247bSMatthew N. Dodd m_adj(m, LLC_SNAPFRAMELEN); 8001cafed39SJonathan Lemon isr = NETISR_AARP; 801655929bfSJulian Elischer break; 802df8bae1dSRodney W. Grimes } 8031cafed39SJonathan Lemon } 804242c5536SPeter Wemm #endif /* NETATALK */ 8051cafed39SJonathan Lemon goto discard; 806df8bae1dSRodney W. Grimes } 8071cafed39SJonathan Lemon netisr_dispatch(isr, m); 808c1d93b05SSam Leffler return; 8091cafed39SJonathan Lemon 810c1d93b05SSam Leffler discard: 811c1d93b05SSam Leffler /* 812c1d93b05SSam Leffler * Packet is to be discarded. If netgraph is present, 813c1d93b05SSam Leffler * hand the packet to it for last chance processing; 814c1d93b05SSam Leffler * otherwise dispose of it. 815c1d93b05SSam Leffler */ 816c1d93b05SSam Leffler if (ng_ether_input_orphan_p != NULL) { 817c1d93b05SSam Leffler /* 818c1d93b05SSam Leffler * Put back the ethernet header so netgraph has a 819c1d93b05SSam Leffler * consistent view of inbound packets. 820c1d93b05SSam Leffler */ 821797f247bSMatthew N. Dodd M_PREPEND(m, ETHER_HDR_LEN, M_DONTWAIT); 822c1d93b05SSam Leffler (*ng_ether_input_orphan_p)(ifp, m); 823c1d93b05SSam Leffler return; 824c1d93b05SSam Leffler } 825c1d93b05SSam Leffler m_freem(m); 826c1d93b05SSam Leffler } 827c1d93b05SSam Leffler 828c1d93b05SSam Leffler /* 829c1d93b05SSam Leffler * Convert Ethernet address to printable (loggable) representation. 830c1d93b05SSam Leffler * This routine is for compatibility; it's better to just use 831c1d93b05SSam Leffler * 832c1d93b05SSam Leffler * printf("%6D", <pointer to address>, ":"); 833c1d93b05SSam Leffler * 834c1d93b05SSam Leffler * since there's no static buffer involved. 835c1d93b05SSam Leffler */ 836c1d93b05SSam Leffler char * 837c1d93b05SSam Leffler ether_sprintf(const u_char *ap) 838c1d93b05SSam Leffler { 839c1d93b05SSam Leffler static char etherbuf[18]; 840c1d93b05SSam Leffler snprintf(etherbuf, sizeof (etherbuf), "%6D", ap, ":"); 841c1d93b05SSam Leffler return (etherbuf); 842df8bae1dSRodney W. Grimes } 843df8bae1dSRodney W. Grimes 844df8bae1dSRodney W. Grimes /* 845df8bae1dSRodney W. Grimes * Perform common duties while attaching to interface list 846df8bae1dSRodney W. Grimes */ 847df8bae1dSRodney W. Grimes void 848c1d93b05SSam Leffler ether_ifattach(struct ifnet *ifp, const u_int8_t *llc) 849df8bae1dSRodney W. Grimes { 850098a8c3bSMatthew N. Dodd struct ifaddr *ifa; 851098a8c3bSMatthew N. Dodd struct sockaddr_dl *sdl; 852df8bae1dSRodney W. Grimes 853df8bae1dSRodney W. Grimes ifp->if_type = IFT_ETHER; 854c1d93b05SSam Leffler ifp->if_addrlen = ETHER_ADDR_LEN; 855c1d93b05SSam Leffler ifp->if_hdrlen = ETHER_HDR_LEN; 856cfeff1b6SJonathan Lemon if_attach(ifp); 857df8bae1dSRodney W. Grimes ifp->if_mtu = ETHERMTU; 858c1d93b05SSam Leffler ifp->if_output = ether_output; 859c1d93b05SSam Leffler ifp->if_input = ether_input; 8601158dfb7SGarrett Wollman ifp->if_resolvemulti = ether_resolvemulti; 861a330e1f1SGary Palmer if (ifp->if_baudrate == 0) 862c1d93b05SSam Leffler ifp->if_baudrate = IF_Mbps(10); /* just a default */ 863322dcb8dSMax Khon ifp->if_broadcastaddr = etherbroadcastaddr; 864c1d93b05SSam Leffler 865f9132cebSJonathan Lemon ifa = ifaddr_byindex(ifp->if_index); 8666e551fb6SDavid E. O'Brien KASSERT(ifa != NULL, ("%s: no lladdr!\n", __func__)); 86759562606SGarrett Wollman sdl = (struct sockaddr_dl *)ifa->ifa_addr; 868df8bae1dSRodney W. Grimes sdl->sdl_type = IFT_ETHER; 869df8bae1dSRodney W. Grimes sdl->sdl_alen = ifp->if_addrlen; 870c1d93b05SSam Leffler bcopy(llc, LLADDR(sdl), ifp->if_addrlen); 871c1d93b05SSam Leffler /* 872c1d93b05SSam Leffler * XXX: This doesn't belong here; we do it until 873c1d93b05SSam Leffler * XXX: all drivers are cleaned up 874c1d93b05SSam Leffler */ 875c1d93b05SSam Leffler if (llc != IFP2AC(ifp)->ac_enaddr) 876c1d93b05SSam Leffler bcopy(llc, IFP2AC(ifp)->ac_enaddr, ifp->if_addrlen); 877c1d93b05SSam Leffler 878797f247bSMatthew N. Dodd bpfattach(ifp, DLT_EN10MB, ETHER_HDR_LEN); 879e1e1452dSArchie Cobbs if (ng_ether_attach_p != NULL) 880e1e1452dSArchie Cobbs (*ng_ether_attach_p)(ifp); 8817b109fa4SLuigi Rizzo if (BDG_LOADED) 882db69a05dSPaul Saab bdgtakeifaces_ptr(); 883e3bbbec2SMatthew N. Dodd 884e3bbbec2SMatthew N. Dodd /* Announce Ethernet MAC address. */ 885e3bbbec2SMatthew N. Dodd if_printf(ifp, "Ethernet address: %6D\n", llc, ":"); 886e1e1452dSArchie Cobbs } 887e1e1452dSArchie Cobbs 88821b8ebd9SArchie Cobbs /* 88921b8ebd9SArchie Cobbs * Perform common duties while detaching an Ethernet interface 89021b8ebd9SArchie Cobbs */ 89121b8ebd9SArchie Cobbs void 892c1d93b05SSam Leffler ether_ifdetach(struct ifnet *ifp) 89321b8ebd9SArchie Cobbs { 89421b8ebd9SArchie Cobbs if (ng_ether_detach_p != NULL) 89521b8ebd9SArchie Cobbs (*ng_ether_detach_p)(ifp); 89621b8ebd9SArchie Cobbs bpfdetach(ifp); 89721b8ebd9SArchie Cobbs if_detach(ifp); 8987b109fa4SLuigi Rizzo if (BDG_LOADED) 899db69a05dSPaul Saab bdgtakeifaces_ptr(); 90021b8ebd9SArchie Cobbs } 90121b8ebd9SArchie Cobbs 902ce02431fSDoug Rabson SYSCTL_DECL(_net_link); 903602d513cSGarrett Wollman SYSCTL_NODE(_net_link, IFT_ETHER, ether, CTLFLAG_RW, 0, "Ethernet"); 904d7647d96SDag-Erling Smørgrav #if defined(INET) || defined(INET6) 9054b984093SLuigi Rizzo SYSCTL_INT(_net_link_ether, OID_AUTO, ipfw, CTLFLAG_RW, 9064b984093SLuigi Rizzo ðer_ipfw,0,"Pass ether pkts through firewall"); 907d7647d96SDag-Erling Smørgrav #endif 90830106f6aSPoul-Henning Kamp 90916b4a343SChristian Weisgerber #if 0 91016b4a343SChristian Weisgerber /* 91116b4a343SChristian Weisgerber * This is for reference. We have a table-driven version 91216b4a343SChristian Weisgerber * of the little-endian crc32 generator, which is faster 91316b4a343SChristian Weisgerber * than the double-loop. 91416b4a343SChristian Weisgerber */ 91516b4a343SChristian Weisgerber uint32_t 91616b4a343SChristian Weisgerber ether_crc32_le(const uint8_t *buf, size_t len) 91716b4a343SChristian Weisgerber { 91816b4a343SChristian Weisgerber size_t i; 91916b4a343SChristian Weisgerber uint32_t crc; 92016b4a343SChristian Weisgerber int bit; 92116b4a343SChristian Weisgerber uint8_t data; 92216b4a343SChristian Weisgerber 92316b4a343SChristian Weisgerber crc = 0xffffffff; /* initial value */ 92416b4a343SChristian Weisgerber 92516b4a343SChristian Weisgerber for (i = 0; i < len; i++) { 92616b4a343SChristian Weisgerber for (data = *buf++, bit = 0; bit < 8; bit++, data >>= 1) 92716b4a343SChristian Weisgerber carry = (crc ^ data) & 1; 92816b4a343SChristian Weisgerber crc >>= 1; 92916b4a343SChristian Weisgerber if (carry) 93016b4a343SChristian Weisgerber crc = (crc ^ ETHER_CRC_POLY_LE); 93116b4a343SChristian Weisgerber } 93216b4a343SChristian Weisgerber 93316b4a343SChristian Weisgerber return (crc); 93416b4a343SChristian Weisgerber } 93516b4a343SChristian Weisgerber #else 93616b4a343SChristian Weisgerber uint32_t 93716b4a343SChristian Weisgerber ether_crc32_le(const uint8_t *buf, size_t len) 93816b4a343SChristian Weisgerber { 93916b4a343SChristian Weisgerber static const uint32_t crctab[] = { 94016b4a343SChristian Weisgerber 0x00000000, 0x1db71064, 0x3b6e20c8, 0x26d930ac, 94116b4a343SChristian Weisgerber 0x76dc4190, 0x6b6b51f4, 0x4db26158, 0x5005713c, 94216b4a343SChristian Weisgerber 0xedb88320, 0xf00f9344, 0xd6d6a3e8, 0xcb61b38c, 94316b4a343SChristian Weisgerber 0x9b64c2b0, 0x86d3d2d4, 0xa00ae278, 0xbdbdf21c 94416b4a343SChristian Weisgerber }; 94516b4a343SChristian Weisgerber size_t i; 94616b4a343SChristian Weisgerber uint32_t crc; 94716b4a343SChristian Weisgerber 94816b4a343SChristian Weisgerber crc = 0xffffffff; /* initial value */ 94916b4a343SChristian Weisgerber 95016b4a343SChristian Weisgerber for (i = 0; i < len; i++) { 95116b4a343SChristian Weisgerber crc ^= buf[i]; 95216b4a343SChristian Weisgerber crc = (crc >> 4) ^ crctab[crc & 0xf]; 95316b4a343SChristian Weisgerber crc = (crc >> 4) ^ crctab[crc & 0xf]; 95416b4a343SChristian Weisgerber } 95516b4a343SChristian Weisgerber 95616b4a343SChristian Weisgerber return (crc); 95716b4a343SChristian Weisgerber } 95816b4a343SChristian Weisgerber #endif 95916b4a343SChristian Weisgerber 96016b4a343SChristian Weisgerber uint32_t 96116b4a343SChristian Weisgerber ether_crc32_be(const uint8_t *buf, size_t len) 96216b4a343SChristian Weisgerber { 96316b4a343SChristian Weisgerber size_t i; 96416b4a343SChristian Weisgerber uint32_t crc, carry; 96516b4a343SChristian Weisgerber int bit; 96616b4a343SChristian Weisgerber uint8_t data; 96716b4a343SChristian Weisgerber 96816b4a343SChristian Weisgerber crc = 0xffffffff; /* initial value */ 96916b4a343SChristian Weisgerber 97016b4a343SChristian Weisgerber for (i = 0; i < len; i++) { 97116b4a343SChristian Weisgerber for (data = *buf++, bit = 0; bit < 8; bit++, data >>= 1) { 97216b4a343SChristian Weisgerber carry = ((crc & 0x80000000) ? 1 : 0) ^ (data & 0x01); 97316b4a343SChristian Weisgerber crc <<= 1; 97416b4a343SChristian Weisgerber if (carry) 97516b4a343SChristian Weisgerber crc = (crc ^ ETHER_CRC_POLY_BE) | carry; 97616b4a343SChristian Weisgerber } 97716b4a343SChristian Weisgerber } 97816b4a343SChristian Weisgerber 97916b4a343SChristian Weisgerber return (crc); 98016b4a343SChristian Weisgerber } 98116b4a343SChristian Weisgerber 982fb583156SDavid Greenman int 98372fd1b6aSDag-Erling Smørgrav ether_ioctl(struct ifnet *ifp, int command, caddr_t data) 98430106f6aSPoul-Henning Kamp { 98530106f6aSPoul-Henning Kamp struct ifaddr *ifa = (struct ifaddr *) data; 98630106f6aSPoul-Henning Kamp struct ifreq *ifr = (struct ifreq *) data; 987fb583156SDavid Greenman int error = 0; 98830106f6aSPoul-Henning Kamp 98930106f6aSPoul-Henning Kamp switch (command) { 99030106f6aSPoul-Henning Kamp case SIOCSIFADDR: 99130106f6aSPoul-Henning Kamp ifp->if_flags |= IFF_UP; 99230106f6aSPoul-Henning Kamp 99330106f6aSPoul-Henning Kamp switch (ifa->ifa_addr->sa_family) { 99430106f6aSPoul-Henning Kamp #ifdef INET 99530106f6aSPoul-Henning Kamp case AF_INET: 99630106f6aSPoul-Henning Kamp ifp->if_init(ifp->if_softc); /* before arpwhohas */ 997322dcb8dSMax Khon arp_ifinit(ifp, ifa); 99830106f6aSPoul-Henning Kamp break; 99930106f6aSPoul-Henning Kamp #endif 100030106f6aSPoul-Henning Kamp #ifdef IPX 100130106f6aSPoul-Henning Kamp /* 100230106f6aSPoul-Henning Kamp * XXX - This code is probably wrong 100330106f6aSPoul-Henning Kamp */ 100430106f6aSPoul-Henning Kamp case AF_IPX: 100530106f6aSPoul-Henning Kamp { 1006098a8c3bSMatthew N. Dodd struct ipx_addr *ina = &(IA_SIPX(ifa)->sipx_addr); 10074c8e8c05SJulian Elischer struct arpcom *ac = IFP2AC(ifp); 100830106f6aSPoul-Henning Kamp 100930106f6aSPoul-Henning Kamp if (ipx_nullhost(*ina)) 101030106f6aSPoul-Henning Kamp ina->x_host = 101186101139SPoul-Henning Kamp *(union ipx_host *) 101286101139SPoul-Henning Kamp ac->ac_enaddr; 101330106f6aSPoul-Henning Kamp else { 101430106f6aSPoul-Henning Kamp bcopy((caddr_t) ina->x_host.c_host, 101586101139SPoul-Henning Kamp (caddr_t) ac->ac_enaddr, 101686101139SPoul-Henning Kamp sizeof(ac->ac_enaddr)); 101730106f6aSPoul-Henning Kamp } 101830106f6aSPoul-Henning Kamp 101930106f6aSPoul-Henning Kamp /* 102030106f6aSPoul-Henning Kamp * Set new address 102130106f6aSPoul-Henning Kamp */ 102230106f6aSPoul-Henning Kamp ifp->if_init(ifp->if_softc); 102330106f6aSPoul-Henning Kamp break; 102430106f6aSPoul-Henning Kamp } 102530106f6aSPoul-Henning Kamp #endif 102630106f6aSPoul-Henning Kamp default: 102730106f6aSPoul-Henning Kamp ifp->if_init(ifp->if_softc); 102830106f6aSPoul-Henning Kamp break; 102930106f6aSPoul-Henning Kamp } 103030106f6aSPoul-Henning Kamp break; 103130106f6aSPoul-Henning Kamp 103230106f6aSPoul-Henning Kamp case SIOCGIFADDR: 103330106f6aSPoul-Henning Kamp { 103430106f6aSPoul-Henning Kamp struct sockaddr *sa; 103530106f6aSPoul-Henning Kamp 103630106f6aSPoul-Henning Kamp sa = (struct sockaddr *) & ifr->ifr_data; 10374c8e8c05SJulian Elischer bcopy(IFP2AC(ifp)->ac_enaddr, 103830106f6aSPoul-Henning Kamp (caddr_t) sa->sa_data, ETHER_ADDR_LEN); 103930106f6aSPoul-Henning Kamp } 104030106f6aSPoul-Henning Kamp break; 1041fb583156SDavid Greenman 1042fb583156SDavid Greenman case SIOCSIFMTU: 1043fb583156SDavid Greenman /* 1044fb583156SDavid Greenman * Set the interface MTU. 1045fb583156SDavid Greenman */ 1046fb583156SDavid Greenman if (ifr->ifr_mtu > ETHERMTU) { 1047fb583156SDavid Greenman error = EINVAL; 1048fb583156SDavid Greenman } else { 1049fb583156SDavid Greenman ifp->if_mtu = ifr->ifr_mtu; 105030106f6aSPoul-Henning Kamp } 1051fb583156SDavid Greenman break; 1052c1d93b05SSam Leffler default: 1053c1d93b05SSam Leffler error = EINVAL; /* XXX netbsd has ENOTTY??? */ 1054c1d93b05SSam Leffler break; 1055fb583156SDavid Greenman } 1056fb583156SDavid Greenman return (error); 105730106f6aSPoul-Henning Kamp } 10581158dfb7SGarrett Wollman 105937c84183SPoul-Henning Kamp static int 106072fd1b6aSDag-Erling Smørgrav ether_resolvemulti(struct ifnet *ifp, struct sockaddr **llsa, 106172fd1b6aSDag-Erling Smørgrav struct sockaddr *sa) 10621158dfb7SGarrett Wollman { 10631158dfb7SGarrett Wollman struct sockaddr_dl *sdl; 1064d7647d96SDag-Erling Smørgrav #ifdef INET 10651158dfb7SGarrett Wollman struct sockaddr_in *sin; 1066d7647d96SDag-Erling Smørgrav #endif 106782cd038dSYoshinobu Inoue #ifdef INET6 106882cd038dSYoshinobu Inoue struct sockaddr_in6 *sin6; 106982cd038dSYoshinobu Inoue #endif 10701158dfb7SGarrett Wollman u_char *e_addr; 10711158dfb7SGarrett Wollman 10721158dfb7SGarrett Wollman switch(sa->sa_family) { 10731158dfb7SGarrett Wollman case AF_LINK: 10747f33a738SJulian Elischer /* 10757f33a738SJulian Elischer * No mapping needed. Just check that it's a valid MC address. 10767f33a738SJulian Elischer */ 10771158dfb7SGarrett Wollman sdl = (struct sockaddr_dl *)sa; 10781158dfb7SGarrett Wollman e_addr = LLADDR(sdl); 10791158dfb7SGarrett Wollman if ((e_addr[0] & 1) != 1) 10801158dfb7SGarrett Wollman return EADDRNOTAVAIL; 10811158dfb7SGarrett Wollman *llsa = 0; 10821158dfb7SGarrett Wollman return 0; 10831158dfb7SGarrett Wollman 10841158dfb7SGarrett Wollman #ifdef INET 10851158dfb7SGarrett Wollman case AF_INET: 10861158dfb7SGarrett Wollman sin = (struct sockaddr_in *)sa; 10871158dfb7SGarrett Wollman if (!IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) 10881158dfb7SGarrett Wollman return EADDRNOTAVAIL; 10891158dfb7SGarrett Wollman MALLOC(sdl, struct sockaddr_dl *, sizeof *sdl, M_IFMADDR, 1090a163d034SWarner Losh M_WAITOK|M_ZERO); 10911158dfb7SGarrett Wollman sdl->sdl_len = sizeof *sdl; 10921158dfb7SGarrett Wollman sdl->sdl_family = AF_LINK; 10931158dfb7SGarrett Wollman sdl->sdl_index = ifp->if_index; 10941158dfb7SGarrett Wollman sdl->sdl_type = IFT_ETHER; 10951158dfb7SGarrett Wollman sdl->sdl_alen = ETHER_ADDR_LEN; 10961158dfb7SGarrett Wollman e_addr = LLADDR(sdl); 10971158dfb7SGarrett Wollman ETHER_MAP_IP_MULTICAST(&sin->sin_addr, e_addr); 10981158dfb7SGarrett Wollman *llsa = (struct sockaddr *)sdl; 10991158dfb7SGarrett Wollman return 0; 11001158dfb7SGarrett Wollman #endif 110182cd038dSYoshinobu Inoue #ifdef INET6 110282cd038dSYoshinobu Inoue case AF_INET6: 110382cd038dSYoshinobu Inoue sin6 = (struct sockaddr_in6 *)sa; 1104595b8a1cSJun-ichiro itojun Hagino if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { 1105595b8a1cSJun-ichiro itojun Hagino /* 1106595b8a1cSJun-ichiro itojun Hagino * An IP6 address of 0 means listen to all 1107595b8a1cSJun-ichiro itojun Hagino * of the Ethernet multicast address used for IP6. 1108595b8a1cSJun-ichiro itojun Hagino * (This is used for multicast routers.) 1109595b8a1cSJun-ichiro itojun Hagino */ 1110595b8a1cSJun-ichiro itojun Hagino ifp->if_flags |= IFF_ALLMULTI; 1111595b8a1cSJun-ichiro itojun Hagino *llsa = 0; 1112595b8a1cSJun-ichiro itojun Hagino return 0; 1113595b8a1cSJun-ichiro itojun Hagino } 111482cd038dSYoshinobu Inoue if (!IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) 111582cd038dSYoshinobu Inoue return EADDRNOTAVAIL; 111682cd038dSYoshinobu Inoue MALLOC(sdl, struct sockaddr_dl *, sizeof *sdl, M_IFMADDR, 1117a163d034SWarner Losh M_WAITOK|M_ZERO); 111882cd038dSYoshinobu Inoue sdl->sdl_len = sizeof *sdl; 111982cd038dSYoshinobu Inoue sdl->sdl_family = AF_LINK; 112082cd038dSYoshinobu Inoue sdl->sdl_index = ifp->if_index; 112182cd038dSYoshinobu Inoue sdl->sdl_type = IFT_ETHER; 112282cd038dSYoshinobu Inoue sdl->sdl_alen = ETHER_ADDR_LEN; 112382cd038dSYoshinobu Inoue e_addr = LLADDR(sdl); 112482cd038dSYoshinobu Inoue ETHER_MAP_IPV6_MULTICAST(&sin6->sin6_addr, e_addr); 112582cd038dSYoshinobu Inoue *llsa = (struct sockaddr *)sdl; 112682cd038dSYoshinobu Inoue return 0; 112782cd038dSYoshinobu Inoue #endif 11281158dfb7SGarrett Wollman 11291158dfb7SGarrett Wollman default: 11301158dfb7SGarrett Wollman /* 11311158dfb7SGarrett Wollman * Well, the text isn't quite right, but it's the name 11321158dfb7SGarrett Wollman * that counts... 11331158dfb7SGarrett Wollman */ 11341158dfb7SGarrett Wollman return EAFNOSUPPORT; 11351158dfb7SGarrett Wollman } 11361158dfb7SGarrett Wollman } 113740811c14SMatthew N. Dodd 113840811c14SMatthew N. Dodd static moduledata_t ether_mod = { 113940811c14SMatthew N. Dodd "ether", 114040811c14SMatthew N. Dodd NULL, 114140811c14SMatthew N. Dodd 0 114240811c14SMatthew N. Dodd }; 114340811c14SMatthew N. Dodd 114440811c14SMatthew N. Dodd DECLARE_MODULE(ether, ether_mod, SI_SUB_PSEUDO, SI_ORDER_ANY); 114540811c14SMatthew N. Dodd MODULE_VERSION(ether, 1); 1146