1c398230bSWarner Losh /*- 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" 40a9771948SGleb Smirnoff #include "opt_carp.h" 41430df5f4SEivind Eklund 42df8bae1dSRodney W. Grimes #include <sys/param.h> 43df8bae1dSRodney W. Grimes #include <sys/systm.h> 44df8bae1dSRodney W. Grimes #include <sys/kernel.h> 4543b29369SRobert Watson #include <sys/mac.h> 46df8bae1dSRodney W. Grimes #include <sys/malloc.h> 4741ee9f1cSPoul-Henning Kamp #include <sys/module.h> 48df8bae1dSRodney W. Grimes #include <sys/mbuf.h> 4910b1fde0SMark Murray #include <sys/random.h> 50df8bae1dSRodney W. Grimes #include <sys/socket.h> 5151a53488SBruce Evans #include <sys/sockio.h> 52602d513cSGarrett Wollman #include <sys/sysctl.h> 53df8bae1dSRodney W. Grimes 54df8bae1dSRodney W. Grimes #include <net/if.h> 55d7647d96SDag-Erling Smørgrav #include <net/if_arp.h> 56df8bae1dSRodney W. Grimes #include <net/netisr.h> 57df8bae1dSRodney W. Grimes #include <net/route.h> 58df8bae1dSRodney W. Grimes #include <net/if_llc.h> 59df8bae1dSRodney W. Grimes #include <net/if_dl.h> 60df8bae1dSRodney W. Grimes #include <net/if_types.h> 612e2de7f2SArchie Cobbs #include <net/bpf.h> 62e1e1452dSArchie Cobbs #include <net/ethernet.h> 63db69a05dSPaul Saab #include <net/bridge.h> 64c1d93b05SSam Leffler #include <net/if_vlan_var.h> 65df8bae1dSRodney W. Grimes 6682cd038dSYoshinobu Inoue #if defined(INET) || defined(INET6) 67df8bae1dSRodney W. Grimes #include <netinet/in.h> 68df8bae1dSRodney W. Grimes #include <netinet/in_var.h> 69df8bae1dSRodney W. Grimes #include <netinet/if_ether.h> 704b984093SLuigi Rizzo #include <netinet/ip_fw.h> 714b984093SLuigi Rizzo #include <netinet/ip_dummynet.h> 721d5e9e22SEivind Eklund #endif 7382cd038dSYoshinobu Inoue #ifdef INET6 7482cd038dSYoshinobu Inoue #include <netinet6/nd6.h> 7582cd038dSYoshinobu Inoue #endif 76df8bae1dSRodney W. Grimes 77a9771948SGleb Smirnoff #ifdef DEV_CARP 78a9771948SGleb Smirnoff #include <netinet/ip_carp.h> 79a9771948SGleb Smirnoff #endif 80a9771948SGleb Smirnoff 81cc6a66f2SJulian Elischer #ifdef IPX 82cc6a66f2SJulian Elischer #include <netipx/ipx.h> 83cc6a66f2SJulian Elischer #include <netipx/ipx_if.h> 84a1026028SMaxim Sobolev #endif 854f93599fSBoris Popov int (*ef_inputp)(struct ifnet*, struct ether_header *eh, struct mbuf *m); 865accfb8cSBoris Popov int (*ef_outputp)(struct ifnet *ifp, struct mbuf **mp, 872a7e8eceSBoris Popov struct sockaddr *dst, short *tp, int *hlen); 88cc6a66f2SJulian Elischer 89655929bfSJulian Elischer #ifdef NETATALK 90655929bfSJulian Elischer #include <netatalk/at.h> 91655929bfSJulian Elischer #include <netatalk/at_var.h> 92655929bfSJulian Elischer #include <netatalk/at_extern.h> 93655929bfSJulian Elischer 94655929bfSJulian Elischer #define llc_snap_org_code llc_un.type_snap.org_code 95655929bfSJulian Elischer #define llc_snap_ether_type llc_un.type_snap.ether_type 96655929bfSJulian Elischer 97655929bfSJulian Elischer extern u_char at_org_code[3]; 98655929bfSJulian Elischer extern u_char aarp_org_code[3]; 992cc2df49SGarrett Wollman #endif /* NETATALK */ 1002cc2df49SGarrett Wollman 101e1e1452dSArchie Cobbs /* netgraph node hooks for ng_ether(4) */ 102c1d93b05SSam Leffler void (*ng_ether_input_p)(struct ifnet *ifp, struct mbuf **mp); 103c1d93b05SSam Leffler void (*ng_ether_input_orphan_p)(struct ifnet *ifp, struct mbuf *m); 104e1e1452dSArchie Cobbs int (*ng_ether_output_p)(struct ifnet *ifp, struct mbuf **mp); 105e1e1452dSArchie Cobbs void (*ng_ether_attach_p)(struct ifnet *ifp); 106e1e1452dSArchie Cobbs void (*ng_ether_detach_p)(struct ifnet *ifp); 107e1e1452dSArchie Cobbs 108824eb9dcSDavid E. O'Brien void (*vlan_input_p)(struct ifnet *, struct mbuf *); 1099d4fe4b2SBrooks Davis 110db69a05dSPaul Saab /* bridge support */ 111cad15830SLuigi Rizzo int do_bridge; 112db69a05dSPaul Saab bridge_in_t *bridge_in_ptr; 113db69a05dSPaul Saab bdg_forward_t *bdg_forward_ptr; 114db69a05dSPaul Saab bdgtakeifaces_t *bdgtakeifaces_ptr; 115cad15830SLuigi Rizzo struct bdg_softc *ifp2sc; 116db69a05dSPaul Saab 1178f867517SAndrew Thompson struct mbuf *(*bridge_input_p)(struct ifnet *, struct mbuf *); 1188f867517SAndrew Thompson int (*bridge_output_p)(struct ifnet *, struct mbuf *, 1198f867517SAndrew Thompson struct sockaddr *, struct rtentry *); 120c8b01292SAndrew Thompson void (*bridge_dn_p)(struct mbuf *, struct ifnet *); 1218f867517SAndrew Thompson 122e589108dSRobert Watson static const u_char etherbroadcastaddr[ETHER_ADDR_LEN] = 123868d8b62SMatthew N. Dodd { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; 124868d8b62SMatthew N. Dodd 125929ddbbbSAlfred Perlstein static int ether_resolvemulti(struct ifnet *, struct sockaddr **, 126929ddbbbSAlfred Perlstein struct sockaddr *); 127868d8b62SMatthew N. Dodd 128fc74a9f9SBrooks Davis /* XXX: should be in an arp support file, not here */ 129fc74a9f9SBrooks Davis MALLOC_DEFINE(M_ARPCOM, "arpcom", "802.* interface internals"); 130fc74a9f9SBrooks Davis 1314c8e8c05SJulian Elischer #define senderr(e) do { error = (e); goto bad;} while (0) 132df8bae1dSRodney W. Grimes 133d7647d96SDag-Erling Smørgrav #if defined(INET) || defined(INET6) 1344b984093SLuigi Rizzo int 1354b984093SLuigi Rizzo ether_ipfw_chk(struct mbuf **m0, struct ifnet *dst, 136c1d93b05SSam Leffler struct ip_fw **rule, int shared); 1374b984093SLuigi Rizzo static int ether_ipfw; 138d7647d96SDag-Erling Smørgrav #endif 1394b984093SLuigi Rizzo 140df8bae1dSRodney W. Grimes /* 141df8bae1dSRodney W. Grimes * Ethernet output routine. 142df8bae1dSRodney W. Grimes * Encapsulate a packet of type family for the local net. 143df8bae1dSRodney W. Grimes * Use trailer local net encapsulation if enough data in first 144df8bae1dSRodney W. Grimes * packet leaves a multiple of 512 bytes of data in remainder. 145df8bae1dSRodney W. Grimes * Assumes that ifp is actually pointer to arpcom structure. 146df8bae1dSRodney W. Grimes */ 147df8bae1dSRodney W. Grimes int 14872fd1b6aSDag-Erling Smørgrav ether_output(struct ifnet *ifp, struct mbuf *m, 14972fd1b6aSDag-Erling Smørgrav struct sockaddr *dst, struct rtentry *rt0) 150df8bae1dSRodney W. Grimes { 151df8bae1dSRodney W. Grimes short type; 152cd46a114SLuigi Rizzo int error, hdrcmplt = 0; 15364760eb0SWarner Losh u_char esrc[ETHER_ADDR_LEN], edst[ETHER_ADDR_LEN]; 154098a8c3bSMatthew N. Dodd struct ether_header *eh; 1559961e27dSLuigi Rizzo int loop_copy = 0; 156d32864c3SRobert Watson int hlen; /* link layer header length */ 157df8bae1dSRodney W. Grimes 15843b29369SRobert Watson #ifdef MAC 15943b29369SRobert Watson error = mac_check_ifnet_transmit(ifp, m); 16043b29369SRobert Watson if (error) 16143b29369SRobert Watson senderr(error); 16243b29369SRobert Watson #endif 16343b29369SRobert Watson 164afbe3a0fSPoul-Henning Kamp if (ifp->if_flags & IFF_MONITOR) 165afbe3a0fSPoul-Henning Kamp senderr(ENETDOWN); 166df8bae1dSRodney W. Grimes if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING)) 167df8bae1dSRodney W. Grimes senderr(ENETDOWN); 1687f760c48SMatthew N. Dodd 16984dd0fd0SJulian Elischer hlen = ETHER_HDR_LEN; 170df8bae1dSRodney W. Grimes switch (dst->sa_family) { 171df8bae1dSRodney W. Grimes #ifdef INET 172df8bae1dSRodney W. Grimes case AF_INET: 173cd46a114SLuigi Rizzo error = arpresolve(ifp, rt0, m, dst, edst); 174cd46a114SLuigi Rizzo if (error) 175cd46a114SLuigi Rizzo return (error == EWOULDBLOCK ? 0 : error); 17634bed8b0SDavid Greenman type = htons(ETHERTYPE_IP); 177df8bae1dSRodney W. Grimes break; 17843a6c75aSMatthew N. Dodd case AF_ARP: 17943a6c75aSMatthew N. Dodd { 18043a6c75aSMatthew N. Dodd struct arphdr *ah; 18143a6c75aSMatthew N. Dodd ah = mtod(m, struct arphdr *); 18243a6c75aSMatthew N. Dodd ah->ar_hrd = htons(ARPHRD_ETHER); 18343a6c75aSMatthew N. Dodd 18443a6c75aSMatthew N. Dodd loop_copy = -1; /* if this is for us, don't do it */ 18543a6c75aSMatthew N. Dodd 18643a6c75aSMatthew N. Dodd switch(ntohs(ah->ar_op)) { 18743a6c75aSMatthew N. Dodd case ARPOP_REVREQUEST: 18843a6c75aSMatthew N. Dodd case ARPOP_REVREPLY: 18943a6c75aSMatthew N. Dodd type = htons(ETHERTYPE_REVARP); 19043a6c75aSMatthew N. Dodd break; 19143a6c75aSMatthew N. Dodd case ARPOP_REQUEST: 19243a6c75aSMatthew N. Dodd case ARPOP_REPLY: 19343a6c75aSMatthew N. Dodd default: 19443a6c75aSMatthew N. Dodd type = htons(ETHERTYPE_ARP); 19543a6c75aSMatthew N. Dodd break; 19643a6c75aSMatthew N. Dodd } 19743a6c75aSMatthew N. Dodd 19843a6c75aSMatthew N. Dodd if (m->m_flags & M_BCAST) 19943a6c75aSMatthew N. Dodd bcopy(ifp->if_broadcastaddr, edst, ETHER_ADDR_LEN); 20043a6c75aSMatthew N. Dodd else 20143a6c75aSMatthew N. Dodd bcopy(ar_tha(ah), edst, ETHER_ADDR_LEN); 20243a6c75aSMatthew N. Dodd 20343a6c75aSMatthew N. Dodd } 20443a6c75aSMatthew N. Dodd break; 205df8bae1dSRodney W. Grimes #endif 20682cd038dSYoshinobu Inoue #ifdef INET6 20782cd038dSYoshinobu Inoue case AF_INET6: 208cd46a114SLuigi Rizzo error = nd6_storelladdr(ifp, rt0, m, dst, (u_char *)edst); 209cd46a114SLuigi Rizzo if (error) 210cd46a114SLuigi Rizzo return error; 21182cd038dSYoshinobu Inoue type = htons(ETHERTYPE_IPV6); 21282cd038dSYoshinobu Inoue break; 21382cd038dSYoshinobu Inoue #endif 214cc6a66f2SJulian Elischer #ifdef IPX 215cc6a66f2SJulian Elischer case AF_IPX: 2164f93599fSBoris Popov if (ef_outputp) { 2172a7e8eceSBoris Popov error = ef_outputp(ifp, &m, dst, &type, &hlen); 2185accfb8cSBoris Popov if (error) 2195accfb8cSBoris Popov goto bad; 2204f93599fSBoris Popov } else 22134bed8b0SDavid Greenman type = htons(ETHERTYPE_IPX); 222cc6a66f2SJulian Elischer bcopy((caddr_t)&(((struct sockaddr_ipx *)dst)->sipx_addr.x_host), 223cc6a66f2SJulian Elischer (caddr_t)edst, sizeof (edst)); 224cc6a66f2SJulian Elischer break; 225cc6a66f2SJulian Elischer #endif 226655929bfSJulian Elischer #ifdef NETATALK 227655929bfSJulian Elischer case AF_APPLETALK: 2281d0eab59SJulian Elischer { 229ed7509acSJulian Elischer struct at_ifaddr *aa; 2301d0eab59SJulian Elischer 231cd46a114SLuigi Rizzo if ((aa = at_ifawithnet((struct sockaddr_at *)dst)) == NULL) 232cd46a114SLuigi Rizzo senderr(EHOSTUNREACH); /* XXX */ 233cd46a114SLuigi Rizzo if (!aarpresolve(ifp, m, (struct sockaddr_at *)dst, edst)) 2341d0eab59SJulian Elischer return (0); 235655929bfSJulian Elischer /* 236ed7509acSJulian Elischer * In the phase 2 case, need to prepend an mbuf for the llc header. 237655929bfSJulian Elischer */ 238655929bfSJulian Elischer if ( aa->aa_flags & AFA_PHASE2 ) { 239655929bfSJulian Elischer struct llc llc; 240655929bfSJulian Elischer 2417e2041e0SRobert Watson M_PREPEND(m, LLC_SNAPFRAMELEN, M_DONTWAIT); 2422166ffe8SRobert Watson if (m == NULL) 2432166ffe8SRobert Watson senderr(ENOBUFS); 244655929bfSJulian Elischer llc.llc_dsap = llc.llc_ssap = LLC_SNAP_LSAP; 245655929bfSJulian Elischer llc.llc_control = LLC_UI; 246655929bfSJulian Elischer bcopy(at_org_code, llc.llc_snap_org_code, sizeof(at_org_code)); 247655929bfSJulian Elischer llc.llc_snap_ether_type = htons( ETHERTYPE_AT ); 248797f247bSMatthew N. Dodd bcopy(&llc, mtod(m, caddr_t), LLC_SNAPFRAMELEN); 24934bed8b0SDavid Greenman type = htons(m->m_pkthdr.len); 250797f247bSMatthew N. Dodd hlen = LLC_SNAPFRAMELEN + ETHER_HDR_LEN; 251655929bfSJulian Elischer } else { 25234bed8b0SDavid Greenman type = htons(ETHERTYPE_AT); 253655929bfSJulian Elischer } 254655929bfSJulian Elischer break; 255ed7509acSJulian Elischer } 2568cdfefbdSPeter Wemm #endif /* NETATALK */ 257df8bae1dSRodney W. Grimes 258114ae644SMike Smith case pseudo_AF_HDRCMPLT: 259114ae644SMike Smith hdrcmplt = 1; 260114ae644SMike Smith eh = (struct ether_header *)dst->sa_data; 261114ae644SMike Smith (void)memcpy(esrc, eh->ether_shost, sizeof (esrc)); 262114ae644SMike Smith /* FALLTHROUGH */ 263114ae644SMike Smith 264df8bae1dSRodney W. Grimes case AF_UNSPEC: 2659d3f194dSJulian Elischer loop_copy = -1; /* if this is for us, don't do it */ 266df8bae1dSRodney W. Grimes eh = (struct ether_header *)dst->sa_data; 26794a5d9b6SDavid Greenman (void)memcpy(edst, eh->ether_dhost, sizeof (edst)); 268df8bae1dSRodney W. Grimes type = eh->ether_type; 269df8bae1dSRodney W. Grimes break; 270df8bae1dSRodney W. Grimes 271df8bae1dSRodney W. Grimes default: 27229e1b85fSBrooks Davis if_printf(ifp, "can't handle af%d\n", dst->sa_family); 273df8bae1dSRodney W. Grimes senderr(EAFNOSUPPORT); 274df8bae1dSRodney W. Grimes } 275df8bae1dSRodney W. Grimes 276df8bae1dSRodney W. Grimes /* 277df8bae1dSRodney W. Grimes * Add local net header. If no space in first mbuf, 278df8bae1dSRodney W. Grimes * allocate another. 279df8bae1dSRodney W. Grimes */ 280797f247bSMatthew N. Dodd M_PREPEND(m, ETHER_HDR_LEN, M_DONTWAIT); 2812166ffe8SRobert Watson if (m == NULL) 282df8bae1dSRodney W. Grimes senderr(ENOBUFS); 283df8bae1dSRodney W. Grimes eh = mtod(m, struct ether_header *); 28494a5d9b6SDavid Greenman (void)memcpy(&eh->ether_type, &type, 285df8bae1dSRodney W. Grimes sizeof(eh->ether_type)); 28694a5d9b6SDavid Greenman (void)memcpy(eh->ether_dhost, edst, sizeof (edst)); 287114ae644SMike Smith if (hdrcmplt) 288114ae644SMike Smith (void)memcpy(eh->ether_shost, esrc, 289114ae644SMike Smith sizeof(eh->ether_shost)); 290114ae644SMike Smith else 291fc74a9f9SBrooks Davis (void)memcpy(eh->ether_shost, IFP2ENADDR(ifp), 292df8bae1dSRodney W. Grimes sizeof(eh->ether_shost)); 293ed7509acSJulian Elischer 294ed7509acSJulian Elischer /* 2958f867517SAndrew Thompson * Bridges require special output handling. 2968f867517SAndrew Thompson */ 2978f867517SAndrew Thompson if (ifp->if_bridge) { 2988f867517SAndrew Thompson KASSERT(bridge_output_p != NULL, 2998f867517SAndrew Thompson ("ether_input: if_bridge not loaded!")); 3008f867517SAndrew Thompson return ((*bridge_output_p)(ifp, m, NULL, NULL)); 3018f867517SAndrew Thompson } 3028f867517SAndrew Thompson 3038f867517SAndrew Thompson /* 304ed7509acSJulian Elischer * If a simplex interface, and the packet is being sent to our 305ed7509acSJulian Elischer * Ethernet address or a broadcast address, loopback a copy. 306ed7509acSJulian Elischer * XXX To make a simplex device behave exactly like a duplex 307ed7509acSJulian Elischer * device, we should copy in the case of sending to our own 308ed7509acSJulian Elischer * ethernet address (thus letting the original actually appear 309ed7509acSJulian Elischer * on the wire). However, we don't do that here for security 310ed7509acSJulian Elischer * reasons and compatibility with the original behavior. 311ed7509acSJulian Elischer */ 3124c8e8c05SJulian Elischer if ((ifp->if_flags & IFF_SIMPLEX) && (loop_copy != -1)) { 3133cd67511SJesper Skriver int csum_flags = 0; 3143cd67511SJesper Skriver 3153cd67511SJesper Skriver if (m->m_pkthdr.csum_flags & CSUM_IP) 3163cd67511SJesper Skriver csum_flags |= (CSUM_IP_CHECKED|CSUM_IP_VALID); 3173cd67511SJesper Skriver if (m->m_pkthdr.csum_flags & CSUM_DELAY_DATA) 3183cd67511SJesper Skriver csum_flags |= (CSUM_DATA_VALID|CSUM_PSEUDO_HDR); 31906f684b0SMatthew N. Dodd 3209d3f194dSJulian Elischer if ((m->m_flags & M_BCAST) || (loop_copy > 0)) { 32106f684b0SMatthew N. Dodd struct mbuf *n; 322ed7509acSJulian Elischer 32379db6ff3SArchie Cobbs if ((n = m_copy(m, 0, (int)M_COPYALL)) != NULL) { 3243cd67511SJesper Skriver n->m_pkthdr.csum_flags |= csum_flags; 3253cd67511SJesper Skriver if (csum_flags & CSUM_DATA_VALID) 3263cd67511SJesper Skriver n->m_pkthdr.csum_data = 0xffff; 32706a429a3SArchie Cobbs (void)if_simloop(ifp, n, dst->sa_family, hlen); 328c1404dc0SArchie Cobbs } else 329c1404dc0SArchie Cobbs ifp->if_iqdrops++; 33006f684b0SMatthew N. Dodd } else if (bcmp(eh->ether_dhost, eh->ether_shost, 33106f684b0SMatthew N. Dodd ETHER_ADDR_LEN) == 0) { 3323cd67511SJesper Skriver m->m_pkthdr.csum_flags |= csum_flags; 3333cd67511SJesper Skriver if (csum_flags & CSUM_DATA_VALID) 3343cd67511SJesper Skriver m->m_pkthdr.csum_data = 0xffff; 33506a429a3SArchie Cobbs (void) if_simloop(ifp, m, dst->sa_family, hlen); 336ed7509acSJulian Elischer return (0); /* XXX */ 337ed7509acSJulian Elischer } 338ed7509acSJulian Elischer } 3392e2de7f2SArchie Cobbs 340a9771948SGleb Smirnoff #ifdef DEV_CARP 341a9771948SGleb Smirnoff if (ifp->if_carp && 342a9771948SGleb Smirnoff (error = carp_output(ifp, m, dst, NULL))) 343a9771948SGleb Smirnoff goto bad; 344a9771948SGleb Smirnoff #endif 345a9771948SGleb Smirnoff 346e1e1452dSArchie Cobbs /* Handle ng_ether(4) processing, if any */ 347eb46c866SGleb Smirnoff if (IFP2AC(ifp)->ac_netgraph != NULL) { 348514bcb89SPoul-Henning Kamp KASSERT(ng_ether_output_p != NULL, 349514bcb89SPoul-Henning Kamp ("ng_ether_output_p is NULL")); 350e1e1452dSArchie Cobbs if ((error = (*ng_ether_output_p)(ifp, &m)) != 0) { 351e1e1452dSArchie Cobbs bad: if (m != NULL) 352e1e1452dSArchie Cobbs m_freem(m); 353e1e1452dSArchie Cobbs return (error); 354e1e1452dSArchie Cobbs } 355e1e1452dSArchie Cobbs if (m == NULL) 356e1e1452dSArchie Cobbs return (0); 357e1e1452dSArchie Cobbs } 358e1e1452dSArchie Cobbs 359e1e1452dSArchie Cobbs /* Continue with link-layer output */ 360e1e1452dSArchie Cobbs return ether_output_frame(ifp, m); 361e1e1452dSArchie Cobbs } 362e1e1452dSArchie Cobbs 363e1e1452dSArchie Cobbs /* 364e1e1452dSArchie Cobbs * Ethernet link layer output routine to send a raw frame to the device. 365e1e1452dSArchie Cobbs * 366e1e1452dSArchie Cobbs * This assumes that the 14 byte Ethernet header is present and contiguous 367e1e1452dSArchie Cobbs * in the first mbuf (if BRIDGE'ing). 368e1e1452dSArchie Cobbs */ 369e1e1452dSArchie Cobbs int 370c1d93b05SSam Leffler ether_output_frame(struct ifnet *ifp, struct mbuf *m) 371e1e1452dSArchie Cobbs { 372d7647d96SDag-Erling Smørgrav #if defined(INET) || defined(INET6) 373ac9d7e26SMax Laier struct ip_fw *rule = ip_dn_claim_rule(m); 374d7647d96SDag-Erling Smørgrav #else 375d7647d96SDag-Erling Smørgrav void *rule = NULL; 376d7647d96SDag-Erling Smørgrav #endif 377affc907dSMax Laier int error; 3782b25acc1SLuigi Rizzo 379c1d93b05SSam Leffler if (rule == NULL && BDG_ACTIVE(ifp)) { 380c1d93b05SSam Leffler /* 381c1d93b05SSam Leffler * Beware, the bridge code notices the null rcvif and 382c1d93b05SSam Leffler * uses that identify that it's being called from 383c1d93b05SSam Leffler * ether_output as opposd to ether_input. Yech. 384c1d93b05SSam Leffler */ 385fb5fbe46SLuigi Rizzo m->m_pkthdr.rcvif = NULL; 386c1d93b05SSam Leffler m = bdg_forward_ptr(m, ifp); 3872e2de7f2SArchie Cobbs if (m != NULL) 3882e2de7f2SArchie Cobbs m_freem(m); 3891db59ce6SEivind Eklund return (0); 390fb5fbe46SLuigi Rizzo } 391d7647d96SDag-Erling Smørgrav #if defined(INET) || defined(INET6) 3924b984093SLuigi Rizzo if (IPFW_LOADED && ether_ipfw != 0) { 393c1d93b05SSam Leffler if (ether_ipfw_chk(&m, ifp, &rule, 0) == 0) { 3944b984093SLuigi Rizzo if (m) { 3954b984093SLuigi Rizzo m_freem(m); 396e7909401SDavid Malone return EACCES; /* pkt dropped */ 3974b984093SLuigi Rizzo } else 3984b984093SLuigi Rizzo return 0; /* consumed e.g. in a pipe */ 3994b984093SLuigi Rizzo } 4004b984093SLuigi Rizzo } 401d7647d96SDag-Erling Smørgrav #endif 4022b25acc1SLuigi Rizzo 403df8bae1dSRodney W. Grimes /* 404df5e1987SJonathan Lemon * Queue message on interface, update output statistics if 405df5e1987SJonathan Lemon * successful, and start output if interface not yet active. 406df8bae1dSRodney W. Grimes */ 407affc907dSMax Laier IFQ_HANDOFF(ifp, m, error); 408affc907dSMax Laier return (error); 409df8bae1dSRodney W. Grimes } 410df8bae1dSRodney W. Grimes 411d7647d96SDag-Erling Smørgrav #if defined(INET) || defined(INET6) 412df8bae1dSRodney W. Grimes /* 4134b984093SLuigi Rizzo * ipfw processing for ethernet packets (in and out). 4144b984093SLuigi Rizzo * The second parameter is NULL from ether_demux, and ifp from 4154b984093SLuigi Rizzo * ether_output_frame. This section of code could be used from 4162f8ebbf4SLuigi Rizzo * bridge.c as well as long as we use some extra info 4174b984093SLuigi Rizzo * to distinguish that case from ether_output_frame(); 4184b984093SLuigi Rizzo */ 4194b984093SLuigi Rizzo int 4204b984093SLuigi Rizzo ether_ipfw_chk(struct mbuf **m0, struct ifnet *dst, 421c1d93b05SSam Leffler struct ip_fw **rule, int shared) 4224b984093SLuigi Rizzo { 423c1d93b05SSam Leffler struct ether_header *eh; 424c1d93b05SSam Leffler struct ether_header save_eh; 425c1d93b05SSam Leffler struct mbuf *m; 4264b984093SLuigi Rizzo int i; 4272b25acc1SLuigi Rizzo struct ip_fw_args args; 4284b984093SLuigi Rizzo 42997850a5dSLuigi Rizzo if (*rule != NULL && fw_one_pass) 430015d72e0SLuigi Rizzo return 1; /* dummynet packet, already partially processed */ 4312f8ebbf4SLuigi Rizzo 4324b984093SLuigi Rizzo /* 4332f8ebbf4SLuigi Rizzo * I need some amt of data to be contiguous, and in case others need 4344b984093SLuigi Rizzo * the packet (shared==1) also better be in the first mbuf. 4354b984093SLuigi Rizzo */ 436c1d93b05SSam Leffler m = *m0; 437c1d93b05SSam Leffler i = min( m->m_pkthdr.len, max_protohdr); 438c1d93b05SSam Leffler if ( shared || m->m_len < i) { 439c1d93b05SSam Leffler m = m_pullup(m, i); 440c1d93b05SSam Leffler if (m == NULL) { 441c1d93b05SSam Leffler *m0 = m; 4424b984093SLuigi Rizzo return 0; 4434b984093SLuigi Rizzo } 444c1d93b05SSam Leffler } 445c1d93b05SSam Leffler eh = mtod(m, struct ether_header *); 446c1d93b05SSam Leffler save_eh = *eh; /* save copy for restore below */ 447c1d93b05SSam Leffler m_adj(m, ETHER_HDR_LEN); /* strip ethernet header */ 4484b984093SLuigi Rizzo 449c1d93b05SSam Leffler args.m = m; /* the packet we are looking at */ 4502b25acc1SLuigi Rizzo args.oif = dst; /* destination, if any */ 4512b25acc1SLuigi Rizzo args.rule = *rule; /* matching rule to restart */ 4522b25acc1SLuigi Rizzo args.next_hop = NULL; /* we do not support forward yet */ 4532b25acc1SLuigi Rizzo args.eh = &save_eh; /* MAC header for bridged/MAC packets */ 4542b25acc1SLuigi Rizzo i = ip_fw_chk_ptr(&args); 455c1d93b05SSam Leffler m = args.m; 456c1d93b05SSam Leffler if (m != NULL) { 457c1d93b05SSam Leffler /* 458c1d93b05SSam Leffler * Restore Ethernet header, as needed, in case the 459c1d93b05SSam Leffler * mbuf chain was replaced by ipfw. 460c1d93b05SSam Leffler */ 461a163d034SWarner Losh M_PREPEND(m, ETHER_HDR_LEN, M_DONTWAIT); 462c1d93b05SSam Leffler if (m == NULL) { 463c1d93b05SSam Leffler *m0 = m; 464c1d93b05SSam Leffler return 0; 465c1d93b05SSam Leffler } 466c1d93b05SSam Leffler if (eh != mtod(m, struct ether_header *)) 467c1d93b05SSam Leffler bcopy(&save_eh, mtod(m, struct ether_header *), 468c1d93b05SSam Leffler ETHER_HDR_LEN); 469c1d93b05SSam Leffler } 470c1d93b05SSam Leffler *m0 = m; 4712b25acc1SLuigi Rizzo *rule = args.rule; 4722b25acc1SLuigi Rizzo 4736c69a7c3SGleb Smirnoff if (i == IP_FW_DENY) /* drop */ 4744b984093SLuigi Rizzo return 0; 4754b984093SLuigi Rizzo 4766c69a7c3SGleb Smirnoff KASSERT(m != NULL, ("ether_ipfw_chk: m is NULL")); 4776c69a7c3SGleb Smirnoff 4786c69a7c3SGleb Smirnoff if (i == IP_FW_PASS) /* a PASS rule. */ 4794b984093SLuigi Rizzo return 1; 4804b984093SLuigi Rizzo 4816c69a7c3SGleb Smirnoff if (DUMMYNET_LOADED && (i == IP_FW_DUMMYNET)) { 4824b984093SLuigi Rizzo /* 4834b984093SLuigi Rizzo * Pass the pkt to dummynet, which consumes it. 4844b984093SLuigi Rizzo * If shared, make a copy and keep the original. 4854b984093SLuigi Rizzo */ 4864b984093SLuigi Rizzo if (shared) { 487a163d034SWarner Losh m = m_copypacket(m, M_DONTWAIT); 4882b25acc1SLuigi Rizzo if (m == NULL) 4894b984093SLuigi Rizzo return 0; 4904b984093SLuigi Rizzo } else { 4912b25acc1SLuigi Rizzo /* 492c1d93b05SSam Leffler * Pass the original to dummynet and 493c1d93b05SSam Leffler * nothing back to the caller 4942b25acc1SLuigi Rizzo */ 495c1d93b05SSam Leffler *m0 = NULL ; 4964b984093SLuigi Rizzo } 49728935658SGleb Smirnoff ip_dn_io_ptr(m, dst ? DN_TO_ETH_OUT: DN_TO_ETH_DEMUX, &args); 4984b984093SLuigi Rizzo return 0; 4994b984093SLuigi Rizzo } 5004b984093SLuigi Rizzo /* 5012f8ebbf4SLuigi Rizzo * XXX at some point add support for divert/forward actions. 5022f8ebbf4SLuigi Rizzo * If none of the above matches, we have to drop the pkt. 5034b984093SLuigi Rizzo */ 5044b984093SLuigi Rizzo return 0; 5054b984093SLuigi Rizzo } 506d7647d96SDag-Erling Smørgrav #endif 5074b984093SLuigi Rizzo 5084b984093SLuigi Rizzo /* 509c1d93b05SSam Leffler * Process a received Ethernet packet; the packet is in the 510c1d93b05SSam Leffler * mbuf chain m with the ethernet header at the front. 511df8bae1dSRodney W. Grimes */ 512c1d93b05SSam Leffler static void 513c1d93b05SSam Leffler ether_input(struct ifnet *ifp, struct mbuf *m) 514df8bae1dSRodney W. Grimes { 515c1d93b05SSam Leffler struct ether_header *eh; 516c1d93b05SSam Leffler u_short etype; 517df8bae1dSRodney W. Grimes 518c1d93b05SSam Leffler /* 519c1d93b05SSam Leffler * Do consistency checks to verify assumptions 520c1d93b05SSam Leffler * made by code past this point. 521c1d93b05SSam Leffler */ 522c1d93b05SSam Leffler if ((m->m_flags & M_PKTHDR) == 0) { 523c1d93b05SSam Leffler if_printf(ifp, "discard frame w/o packet header\n"); 524c1d93b05SSam Leffler ifp->if_ierrors++; 525c939f1aeSLuigi Rizzo m_freem(m); 526c939f1aeSLuigi Rizzo return; 527c939f1aeSLuigi Rizzo } 528797f247bSMatthew N. Dodd if (m->m_len < ETHER_HDR_LEN) { 529c1d93b05SSam Leffler /* XXX maybe should pullup? */ 530c1d93b05SSam Leffler if_printf(ifp, "discard frame w/o leading ethernet " 531c1d93b05SSam Leffler "header (len %u pkt len %u)\n", 532c1d93b05SSam Leffler m->m_len, m->m_pkthdr.len); 533c1d93b05SSam Leffler ifp->if_ierrors++; 534c1d93b05SSam Leffler m_freem(m); 535c1d93b05SSam Leffler return; 5362e2de7f2SArchie Cobbs } 537c1d93b05SSam Leffler eh = mtod(m, struct ether_header *); 538c1d93b05SSam Leffler etype = ntohs(eh->ether_type); 539c1d93b05SSam Leffler if (m->m_pkthdr.len > 540c1d93b05SSam Leffler ETHER_MAX_FRAME(ifp, etype, m->m_flags & M_HASFCS)) { 541c1d93b05SSam Leffler if_printf(ifp, "discard oversize frame " 542c1d93b05SSam Leffler "(ether type %x flags %x len %u > max %lu)\n", 543c1d93b05SSam Leffler etype, m->m_flags, m->m_pkthdr.len, 544c1d93b05SSam Leffler ETHER_MAX_FRAME(ifp, etype, 545c1d93b05SSam Leffler m->m_flags & M_HASFCS)); 546c1d93b05SSam Leffler ifp->if_ierrors++; 547c1d93b05SSam Leffler m_freem(m); 548c1d93b05SSam Leffler return; 549c1d93b05SSam Leffler } 550c1d93b05SSam Leffler if (m->m_pkthdr.rcvif == NULL) { 551c1d93b05SSam Leffler if_printf(ifp, "discard frame w/o interface pointer\n"); 552c1d93b05SSam Leffler ifp->if_ierrors++; 553c1d93b05SSam Leffler m_freem(m); 554c1d93b05SSam Leffler return; 555c1d93b05SSam Leffler } 556c1d93b05SSam Leffler #ifdef DIAGNOSTIC 557c1d93b05SSam Leffler if (m->m_pkthdr.rcvif != ifp) { 5589bf40edeSBrooks Davis if_printf(ifp, "Warning, frame marked as received on %s\n", 5599bf40edeSBrooks Davis m->m_pkthdr.rcvif->if_xname); 560c1d93b05SSam Leffler } 561c1d93b05SSam Leffler #endif 562c1d93b05SSam Leffler 563533d8562SRobert Watson #ifdef MAC 564533d8562SRobert Watson /* 565533d8562SRobert Watson * Tag the mbuf with an appropriate MAC label before any other 566533d8562SRobert Watson * consumers can get to it. 567533d8562SRobert Watson */ 568533d8562SRobert Watson mac_create_mbuf_from_ifnet(ifp, m); 569533d8562SRobert Watson #endif 570533d8562SRobert Watson 571c1d93b05SSam Leffler /* 572c1d93b05SSam Leffler * Give bpf a chance at the packet. 573c1d93b05SSam Leffler */ 574c1d93b05SSam Leffler BPF_MTAP(ifp, m); 5752e2de7f2SArchie Cobbs 576afbe3a0fSPoul-Henning Kamp if (ifp->if_flags & IFF_MONITOR) { 577c1d93b05SSam Leffler /* 578c1d93b05SSam Leffler * Interface marked for monitoring; discard packet. 579c1d93b05SSam Leffler */ 580afbe3a0fSPoul-Henning Kamp m_freem(m); 581afbe3a0fSPoul-Henning Kamp return; 582afbe3a0fSPoul-Henning Kamp } 583afbe3a0fSPoul-Henning Kamp 584c1d93b05SSam Leffler /* If the CRC is still on the packet, trim it off. */ 585c1d93b05SSam Leffler if (m->m_flags & M_HASFCS) { 586c1d93b05SSam Leffler m_adj(m, -ETHER_CRC_LEN); 587c1d93b05SSam Leffler m->m_flags &= ~M_HASFCS; 588c1d93b05SSam Leffler } 589c1d93b05SSam Leffler 590c1d93b05SSam Leffler ifp->if_ibytes += m->m_pkthdr.len; 59105463bb5SDavid Greenman 592e1e1452dSArchie Cobbs /* Handle ng_ether(4) processing, if any */ 593eb46c866SGleb Smirnoff if (IFP2AC(ifp)->ac_netgraph != NULL) { 594514bcb89SPoul-Henning Kamp KASSERT(ng_ether_input_p != NULL, 595514bcb89SPoul-Henning Kamp ("ng_ether_input_p is NULL")); 596c1d93b05SSam Leffler (*ng_ether_input_p)(ifp, &m); 597e1e1452dSArchie Cobbs if (m == NULL) 598e1e1452dSArchie Cobbs return; 599e1e1452dSArchie Cobbs } 600e1e1452dSArchie Cobbs 6018f867517SAndrew Thompson /* 6028f867517SAndrew Thompson * Tap the packet off here for a bridge. bridge_input() 6038f867517SAndrew Thompson * will return NULL if it has consumed the packet, otherwise 6048f867517SAndrew Thompson * it gets processed as normal. Note that bridge_input() 6058f867517SAndrew Thompson * will always return the original packet if we need to 6068f867517SAndrew Thompson * process it locally. 6078f867517SAndrew Thompson */ 6088f867517SAndrew Thompson if (ifp->if_bridge) { 6098f867517SAndrew Thompson KASSERT(bridge_input_p != NULL, 6108f867517SAndrew Thompson ("ether_input: if_bridge not loaded!")); 6118f867517SAndrew Thompson 6128f867517SAndrew Thompson /* Mark the packet as broadcast or multicast. This is also set 6138f867517SAndrew Thompson * further down the code in ether_demux() but since the bridge 6148f867517SAndrew Thompson * input routine rarely returns a mbuf for further processing, 6158f867517SAndrew Thompson * it is an acceptable duplication. 6168f867517SAndrew Thompson */ 6178f867517SAndrew Thompson if (ETHER_IS_MULTICAST(eh->ether_dhost)) { 6188f867517SAndrew Thompson if (bcmp(etherbroadcastaddr, eh->ether_dhost, 6198f867517SAndrew Thompson sizeof(etherbroadcastaddr)) == 0) 6208f867517SAndrew Thompson m->m_flags |= M_BCAST; 6218f867517SAndrew Thompson else 6228f867517SAndrew Thompson m->m_flags |= M_MCAST; 6238f867517SAndrew Thompson } 6248f867517SAndrew Thompson 6258f867517SAndrew Thompson m = (*bridge_input_p)(ifp, m); 6268f867517SAndrew Thompson if (m == NULL) 6278f867517SAndrew Thompson return; 6288f867517SAndrew Thompson /* 6298f867517SAndrew Thompson * Bridge has determined that the packet is for us. 6308f867517SAndrew Thompson * Update our interface pointer -- we may have had 6318f867517SAndrew Thompson * to "bridge" the packet locally. 6328f867517SAndrew Thompson */ 6338f867517SAndrew Thompson ifp = m->m_pkthdr.rcvif; 6348f867517SAndrew Thompson } 6358f867517SAndrew Thompson 6362e2de7f2SArchie Cobbs /* Check for bridging mode */ 637a176c2aeSGleb Smirnoff if (BDG_ACTIVE(ifp) ) 638a176c2aeSGleb Smirnoff if ((m = bridge_in_ptr(ifp, m)) == NULL) 6392e2de7f2SArchie Cobbs return; 6402e2de7f2SArchie Cobbs 641a6ddbff0SPoul-Henning Kamp /* First chunk of an mbuf contains good entropy */ 64210b1fde0SMark Murray if (harvest.ethernet) 64310b1fde0SMark Murray random_harvest(m, 16, 3, 0, RANDOM_NET); 644acf032f5SRobert Watson ether_demux(ifp, m); 645e1e1452dSArchie Cobbs } 646e1e1452dSArchie Cobbs 647e1e1452dSArchie Cobbs /* 648e1e1452dSArchie Cobbs * Upper layer processing for a received Ethernet packet. 649e1e1452dSArchie Cobbs */ 650e1e1452dSArchie Cobbs void 651c1d93b05SSam Leffler ether_demux(struct ifnet *ifp, struct mbuf *m) 652e1e1452dSArchie Cobbs { 653c1d93b05SSam Leffler struct ether_header *eh; 6541cafed39SJonathan Lemon int isr; 655e1e1452dSArchie Cobbs u_short ether_type; 656e1e1452dSArchie Cobbs #if defined(NETATALK) 657098a8c3bSMatthew N. Dodd struct llc *l; 658e1e1452dSArchie Cobbs #endif 659d7647d96SDag-Erling Smørgrav #if defined(INET) || defined(INET6) 660ac9d7e26SMax Laier struct ip_fw *rule = ip_dn_claim_rule(m); 661d7647d96SDag-Erling Smørgrav #endif 66236e8826fSMax Laier 663c1d93b05SSam Leffler KASSERT(ifp != NULL, ("ether_demux: NULL interface pointer")); 664c1d93b05SSam Leffler 665c1d93b05SSam Leffler eh = mtod(m, struct ether_header *); 666cd0cd014SJoerg Wunsch ether_type = ntohs(eh->ether_type); 667c1d93b05SSam Leffler 668d7647d96SDag-Erling Smørgrav #if defined(INET) || defined(INET6) 6692b25acc1SLuigi Rizzo if (rule) /* packet was already bridged */ 6702b25acc1SLuigi Rizzo goto post_stats; 671d7647d96SDag-Erling Smørgrav #endif 6724b984093SLuigi Rizzo 673cd0cd014SJoerg Wunsch if (!(BDG_ACTIVE(ifp)) && 6746ee20ab5SRuslan Ermilov !((ether_type == ETHERTYPE_VLAN || m->m_flags & M_VLANTAG) && 6756ee20ab5SRuslan Ermilov ifp->if_nvlans > 0)) { 676a9771948SGleb Smirnoff #ifdef DEV_CARP 677a9771948SGleb Smirnoff /* 67858996b13SGleb Smirnoff * XXX: Okay, we need to call carp_forus() and - if it is for 67958996b13SGleb Smirnoff * us jump over code that does the normal check 680fc74a9f9SBrooks Davis * "IFP2ENADDR(ifp) == ether_dhost". The check sequence is a bit 68158996b13SGleb Smirnoff * different from OpenBSD, so we jump over as few code as 68258996b13SGleb Smirnoff * possible, to catch _all_ sanity checks. This needs 68358996b13SGleb Smirnoff * evaluation, to see if the carp ether_dhost values break any 68458996b13SGleb Smirnoff * of these checks! 685a9771948SGleb Smirnoff */ 686a9771948SGleb Smirnoff if (ifp->if_carp && carp_forus(ifp->if_carp, eh->ether_dhost)) 687a9771948SGleb Smirnoff goto pre_stats; 688a9771948SGleb Smirnoff #endif 689c6943100SPoul-Henning Kamp /* 690c6943100SPoul-Henning Kamp * Discard packet if upper layers shouldn't see it because it 691c6943100SPoul-Henning Kamp * was unicast to a different Ethernet address. If the driver 692c6943100SPoul-Henning Kamp * is working properly, then this situation can only happen 693c6943100SPoul-Henning Kamp * when the interface is in promiscuous mode. 694cd0cd014SJoerg Wunsch * 695cd0cd014SJoerg Wunsch * If VLANs are active, and this packet has a VLAN tag, do 696cd0cd014SJoerg Wunsch * not drop it here but pass it on to the VLAN layer, to 697cd0cd014SJoerg Wunsch * give them a chance to consider it as well (e. g. in case 698cd0cd014SJoerg Wunsch * bridging is only active on a VLAN). They will drop it if 699cd0cd014SJoerg Wunsch * it's undesired. 700c6943100SPoul-Henning Kamp */ 701cb24f323SArchie Cobbs if ((ifp->if_flags & IFF_PROMISC) != 0 7026ee20ab5SRuslan Ermilov && !ETHER_IS_MULTICAST(eh->ether_dhost) 703cb24f323SArchie Cobbs && bcmp(eh->ether_dhost, 704fc74a9f9SBrooks Davis IFP2ENADDR(ifp), ETHER_ADDR_LEN) != 0 70525faf49dSMaxim Sobolev && (ifp->if_flags & IFF_PPROMISC) == 0) { 706cb24f323SArchie Cobbs m_freem(m); 707cb24f323SArchie Cobbs return; 708cb24f323SArchie Cobbs } 709c6943100SPoul-Henning Kamp } 710cb24f323SArchie Cobbs 711a9771948SGleb Smirnoff #ifdef DEV_CARP 712a9771948SGleb Smirnoff pre_stats: 713a9771948SGleb Smirnoff #endif 7142e2de7f2SArchie Cobbs /* Discard packet if interface is not up */ 715df8bae1dSRodney W. Grimes if ((ifp->if_flags & IFF_UP) == 0) { 716df8bae1dSRodney W. Grimes m_freem(m); 717df8bae1dSRodney W. Grimes return; 718df8bae1dSRodney W. Grimes } 719588523faSSam Leffler if (ETHER_IS_MULTICAST(eh->ether_dhost)) { 72064760eb0SWarner Losh if (bcmp(etherbroadcastaddr, eh->ether_dhost, 721df8bae1dSRodney W. Grimes sizeof(etherbroadcastaddr)) == 0) 722df8bae1dSRodney W. Grimes m->m_flags |= M_BCAST; 7232cc2df49SGarrett Wollman else 724df8bae1dSRodney W. Grimes m->m_flags |= M_MCAST; 7252cc2df49SGarrett Wollman } 726df8bae1dSRodney W. Grimes if (m->m_flags & (M_BCAST|M_MCAST)) 727df8bae1dSRodney W. Grimes ifp->if_imcasts++; 728df8bae1dSRodney W. Grimes 729d7647d96SDag-Erling Smørgrav #if defined(INET) || defined(INET6) 7304b984093SLuigi Rizzo post_stats: 7314b984093SLuigi Rizzo if (IPFW_LOADED && ether_ipfw != 0) { 732c1d93b05SSam Leffler if (ether_ipfw_chk(&m, NULL, &rule, 0) == 0) { 7334b984093SLuigi Rizzo if (m) 7344b984093SLuigi Rizzo m_freem(m); 7354b984093SLuigi Rizzo return; 7364b984093SLuigi Rizzo } 7374b984093SLuigi Rizzo } 738d7647d96SDag-Erling Smørgrav #endif 7394b984093SLuigi Rizzo 740c1d93b05SSam Leffler /* 7416c23e6ccSRuslan Ermilov * Check to see if the device performed the VLAN decapsulation and 742c1d93b05SSam Leffler * provided us with the tag. 743c1d93b05SSam Leffler */ 7446ee20ab5SRuslan Ermilov if (m->m_flags & M_VLANTAG) { 745c1d93b05SSam Leffler /* 7466c23e6ccSRuslan Ermilov * If no VLANs are configured, drop. 7476c23e6ccSRuslan Ermilov */ 7486c23e6ccSRuslan Ermilov if (ifp->if_nvlans == 0) { 7496c23e6ccSRuslan Ermilov ifp->if_noproto++; 7506c23e6ccSRuslan Ermilov m_freem(m); 7516c23e6ccSRuslan Ermilov return; 7526c23e6ccSRuslan Ermilov } 7536c23e6ccSRuslan Ermilov /* 754c1d93b05SSam Leffler * vlan_input() will either recursively call ether_input() 755c1d93b05SSam Leffler * or drop the packet. 756c1d93b05SSam Leffler */ 757c1d93b05SSam Leffler KASSERT(vlan_input_p != NULL,("ether_input: VLAN not loaded!")); 758c1d93b05SSam Leffler (*vlan_input_p)(ifp, m); 759c1d93b05SSam Leffler return; 760c1d93b05SSam Leffler } 761c1d93b05SSam Leffler 762c1d93b05SSam Leffler /* 763c1d93b05SSam Leffler * Handle protocols that expect to have the Ethernet header 764c1d93b05SSam Leffler * (and possibly FCS) intact. 765c1d93b05SSam Leffler */ 766c1d93b05SSam Leffler switch (ether_type) { 767c1d93b05SSam Leffler case ETHERTYPE_VLAN: 768c1d93b05SSam Leffler if (ifp->if_nvlans != 0) { 769c1d93b05SSam Leffler KASSERT(vlan_input_p,("ether_input: VLAN not loaded!")); 770c1d93b05SSam Leffler (*vlan_input_p)(ifp, m); 771c1d93b05SSam Leffler } else { 772c1d93b05SSam Leffler ifp->if_noproto++; 773c1d93b05SSam Leffler m_freem(m); 774c1d93b05SSam Leffler } 775c1d93b05SSam Leffler return; 776c1d93b05SSam Leffler } 777c1d93b05SSam Leffler 778c1d93b05SSam Leffler /* Strip off Ethernet header. */ 779797f247bSMatthew N. Dodd m_adj(m, ETHER_HDR_LEN); 780c1d93b05SSam Leffler 781c1d93b05SSam Leffler /* If the CRC is still on the packet, trim it off. */ 782c1d93b05SSam Leffler if (m->m_flags & M_HASFCS) { 783c1d93b05SSam Leffler m_adj(m, -ETHER_CRC_LEN); 784c1d93b05SSam Leffler m->m_flags &= ~M_HASFCS; 785c1d93b05SSam Leffler } 786c1d93b05SSam Leffler 787307d80beSDavid Greenman switch (ether_type) { 788df8bae1dSRodney W. Grimes #ifdef INET 789df8bae1dSRodney W. Grimes case ETHERTYPE_IP: 7909188b4a1SAndre Oppermann if (ip_fastforward(m)) 7911f91d8c5SDavid Greenman return; 7921cafed39SJonathan Lemon isr = NETISR_IP; 793df8bae1dSRodney W. Grimes break; 794df8bae1dSRodney W. Grimes 795df8bae1dSRodney W. Grimes case ETHERTYPE_ARP: 79608aadfbbSJonathan Lemon if (ifp->if_flags & IFF_NOARP) { 79708aadfbbSJonathan Lemon /* Discard packet if ARP is disabled on interface */ 79808aadfbbSJonathan Lemon m_freem(m); 79908aadfbbSJonathan Lemon return; 80008aadfbbSJonathan Lemon } 8011cafed39SJonathan Lemon isr = NETISR_ARP; 802df8bae1dSRodney W. Grimes break; 803df8bae1dSRodney W. Grimes #endif 804cc6a66f2SJulian Elischer #ifdef IPX 805cc6a66f2SJulian Elischer case ETHERTYPE_IPX: 8064f93599fSBoris Popov if (ef_inputp && ef_inputp(ifp, eh, m) == 0) 8074f93599fSBoris Popov return; 8081cafed39SJonathan Lemon isr = NETISR_IPX; 809cc6a66f2SJulian Elischer break; 810cc6a66f2SJulian Elischer #endif 81182cd038dSYoshinobu Inoue #ifdef INET6 81282cd038dSYoshinobu Inoue case ETHERTYPE_IPV6: 8131cafed39SJonathan Lemon isr = NETISR_IPV6; 81482cd038dSYoshinobu Inoue break; 81582cd038dSYoshinobu Inoue #endif 816655929bfSJulian Elischer #ifdef NETATALK 817655929bfSJulian Elischer case ETHERTYPE_AT: 8181cafed39SJonathan Lemon isr = NETISR_ATALK1; 819655929bfSJulian Elischer break; 820655929bfSJulian Elischer case ETHERTYPE_AARP: 8211cafed39SJonathan Lemon isr = NETISR_AARP; 8221cafed39SJonathan Lemon break; 8238cdfefbdSPeter Wemm #endif /* NETATALK */ 824df8bae1dSRodney W. Grimes default: 8254f93599fSBoris Popov #ifdef IPX 8264f93599fSBoris Popov if (ef_inputp && ef_inputp(ifp, eh, m) == 0) 8274f93599fSBoris Popov return; 8284f93599fSBoris Popov #endif /* IPX */ 829242c5536SPeter Wemm #if defined(NETATALK) 830307d80beSDavid Greenman if (ether_type > ETHERMTU) 831c1d93b05SSam Leffler goto discard; 832df8bae1dSRodney W. Grimes l = mtod(m, struct llc *); 8331cafed39SJonathan Lemon if (l->llc_dsap == LLC_SNAP_LSAP && 8341cafed39SJonathan Lemon l->llc_ssap == LLC_SNAP_LSAP && 8351cafed39SJonathan Lemon l->llc_control == LLC_UI) { 8364158372fSLuigi Rizzo if (bcmp(&(l->llc_snap_org_code)[0], at_org_code, 837655929bfSJulian Elischer sizeof(at_org_code)) == 0 && 838655929bfSJulian Elischer ntohs(l->llc_snap_ether_type) == ETHERTYPE_AT) { 839797f247bSMatthew N. Dodd m_adj(m, LLC_SNAPFRAMELEN); 8401cafed39SJonathan Lemon isr = NETISR_ATALK2; 841655929bfSJulian Elischer break; 842655929bfSJulian Elischer } 8434158372fSLuigi Rizzo if (bcmp(&(l->llc_snap_org_code)[0], aarp_org_code, 844655929bfSJulian Elischer sizeof(aarp_org_code)) == 0 && 845655929bfSJulian Elischer ntohs(l->llc_snap_ether_type) == ETHERTYPE_AARP) { 846797f247bSMatthew N. Dodd m_adj(m, LLC_SNAPFRAMELEN); 8471cafed39SJonathan Lemon isr = NETISR_AARP; 848655929bfSJulian Elischer break; 849df8bae1dSRodney W. Grimes } 8501cafed39SJonathan Lemon } 851242c5536SPeter Wemm #endif /* NETATALK */ 8521cafed39SJonathan Lemon goto discard; 853df8bae1dSRodney W. Grimes } 8541cafed39SJonathan Lemon netisr_dispatch(isr, m); 855c1d93b05SSam Leffler return; 8561cafed39SJonathan Lemon 857c1d93b05SSam Leffler discard: 858c1d93b05SSam Leffler /* 859c1d93b05SSam Leffler * Packet is to be discarded. If netgraph is present, 860c1d93b05SSam Leffler * hand the packet to it for last chance processing; 861c1d93b05SSam Leffler * otherwise dispose of it. 862c1d93b05SSam Leffler */ 863eb46c866SGleb Smirnoff if (IFP2AC(ifp)->ac_netgraph != NULL) { 864514bcb89SPoul-Henning Kamp KASSERT(ng_ether_input_orphan_p != NULL, 865514bcb89SPoul-Henning Kamp ("ng_ether_input_orphan_p is NULL")); 866c1d93b05SSam Leffler /* 867c1d93b05SSam Leffler * Put back the ethernet header so netgraph has a 868c1d93b05SSam Leffler * consistent view of inbound packets. 869c1d93b05SSam Leffler */ 870797f247bSMatthew N. Dodd M_PREPEND(m, ETHER_HDR_LEN, M_DONTWAIT); 871c1d93b05SSam Leffler (*ng_ether_input_orphan_p)(ifp, m); 872c1d93b05SSam Leffler return; 873c1d93b05SSam Leffler } 874c1d93b05SSam Leffler m_freem(m); 875c1d93b05SSam Leffler } 876c1d93b05SSam Leffler 877c1d93b05SSam Leffler /* 878c1d93b05SSam Leffler * Convert Ethernet address to printable (loggable) representation. 879c1d93b05SSam Leffler * This routine is for compatibility; it's better to just use 880c1d93b05SSam Leffler * 881c1d93b05SSam Leffler * printf("%6D", <pointer to address>, ":"); 882c1d93b05SSam Leffler * 883c1d93b05SSam Leffler * since there's no static buffer involved. 884c1d93b05SSam Leffler */ 885c1d93b05SSam Leffler char * 886c1d93b05SSam Leffler ether_sprintf(const u_char *ap) 887c1d93b05SSam Leffler { 888c1d93b05SSam Leffler static char etherbuf[18]; 889c1d93b05SSam Leffler snprintf(etherbuf, sizeof (etherbuf), "%6D", ap, ":"); 890c1d93b05SSam Leffler return (etherbuf); 891df8bae1dSRodney W. Grimes } 892df8bae1dSRodney W. Grimes 893df8bae1dSRodney W. Grimes /* 894df8bae1dSRodney W. Grimes * Perform common duties while attaching to interface list 895df8bae1dSRodney W. Grimes */ 896df8bae1dSRodney W. Grimes void 897c1d93b05SSam Leffler ether_ifattach(struct ifnet *ifp, const u_int8_t *llc) 898df8bae1dSRodney W. Grimes { 899f93dfa28SBrooks Davis int i; 900098a8c3bSMatthew N. Dodd struct ifaddr *ifa; 901098a8c3bSMatthew N. Dodd struct sockaddr_dl *sdl; 902df8bae1dSRodney W. Grimes 903c1d93b05SSam Leffler ifp->if_addrlen = ETHER_ADDR_LEN; 904c1d93b05SSam Leffler ifp->if_hdrlen = ETHER_HDR_LEN; 905cfeff1b6SJonathan Lemon if_attach(ifp); 906df8bae1dSRodney W. Grimes ifp->if_mtu = ETHERMTU; 907c1d93b05SSam Leffler ifp->if_output = ether_output; 908c1d93b05SSam Leffler ifp->if_input = ether_input; 9091158dfb7SGarrett Wollman ifp->if_resolvemulti = ether_resolvemulti; 910a330e1f1SGary Palmer if (ifp->if_baudrate == 0) 911c1d93b05SSam Leffler ifp->if_baudrate = IF_Mbps(10); /* just a default */ 912322dcb8dSMax Khon ifp->if_broadcastaddr = etherbroadcastaddr; 913c1d93b05SSam Leffler 914f9132cebSJonathan Lemon ifa = ifaddr_byindex(ifp->if_index); 9156e551fb6SDavid E. O'Brien KASSERT(ifa != NULL, ("%s: no lladdr!\n", __func__)); 91659562606SGarrett Wollman sdl = (struct sockaddr_dl *)ifa->ifa_addr; 917df8bae1dSRodney W. Grimes sdl->sdl_type = IFT_ETHER; 918df8bae1dSRodney W. Grimes sdl->sdl_alen = ifp->if_addrlen; 919c1d93b05SSam Leffler bcopy(llc, LLADDR(sdl), ifp->if_addrlen); 920c1d93b05SSam Leffler /* 921c1d93b05SSam Leffler * XXX: This doesn't belong here; we do it until 922c1d93b05SSam Leffler * XXX: all drivers are cleaned up 923c1d93b05SSam Leffler */ 924fc74a9f9SBrooks Davis if (llc != IFP2ENADDR(ifp)) 925fc74a9f9SBrooks Davis bcopy(llc, IFP2ENADDR(ifp), ifp->if_addrlen); 926c1d93b05SSam Leffler 927797f247bSMatthew N. Dodd bpfattach(ifp, DLT_EN10MB, ETHER_HDR_LEN); 928e1e1452dSArchie Cobbs if (ng_ether_attach_p != NULL) 929e1e1452dSArchie Cobbs (*ng_ether_attach_p)(ifp); 9307b109fa4SLuigi Rizzo if (BDG_LOADED) 931db69a05dSPaul Saab bdgtakeifaces_ptr(); 932e3bbbec2SMatthew N. Dodd 933f93dfa28SBrooks Davis /* Announce Ethernet MAC address if non-zero. */ 934f93dfa28SBrooks Davis for (i = 0; i < ifp->if_addrlen; i++) 935f93dfa28SBrooks Davis if (llc[i] != 0) 936f93dfa28SBrooks Davis break; 937f93dfa28SBrooks Davis if (i != ifp->if_addrlen) 938e3bbbec2SMatthew N. Dodd if_printf(ifp, "Ethernet address: %6D\n", llc, ":"); 939af5e59bfSRobert Watson if (debug_mpsafenet && (ifp->if_flags & IFF_NEEDSGIANT) != 0) 940af5e59bfSRobert Watson if_printf(ifp, "if_start running deferred for Giant\n"); 941e1e1452dSArchie Cobbs } 942e1e1452dSArchie Cobbs 94321b8ebd9SArchie Cobbs /* 94421b8ebd9SArchie Cobbs * Perform common duties while detaching an Ethernet interface 94521b8ebd9SArchie Cobbs */ 94621b8ebd9SArchie Cobbs void 947c1d93b05SSam Leffler ether_ifdetach(struct ifnet *ifp) 94821b8ebd9SArchie Cobbs { 949514bcb89SPoul-Henning Kamp if (IFP2AC(ifp)->ac_netgraph != NULL) { 950514bcb89SPoul-Henning Kamp KASSERT(ng_ether_detach_p != NULL, 951514bcb89SPoul-Henning Kamp ("ng_ether_detach_p is NULL")); 95221b8ebd9SArchie Cobbs (*ng_ether_detach_p)(ifp); 953514bcb89SPoul-Henning Kamp } 95421b8ebd9SArchie Cobbs bpfdetach(ifp); 95521b8ebd9SArchie Cobbs if_detach(ifp); 9567b109fa4SLuigi Rizzo if (BDG_LOADED) 957db69a05dSPaul Saab bdgtakeifaces_ptr(); 95821b8ebd9SArchie Cobbs } 95921b8ebd9SArchie Cobbs 960ce02431fSDoug Rabson SYSCTL_DECL(_net_link); 961602d513cSGarrett Wollman SYSCTL_NODE(_net_link, IFT_ETHER, ether, CTLFLAG_RW, 0, "Ethernet"); 962d7647d96SDag-Erling Smørgrav #if defined(INET) || defined(INET6) 9634b984093SLuigi Rizzo SYSCTL_INT(_net_link_ether, OID_AUTO, ipfw, CTLFLAG_RW, 9644b984093SLuigi Rizzo ðer_ipfw,0,"Pass ether pkts through firewall"); 965d7647d96SDag-Erling Smørgrav #endif 96630106f6aSPoul-Henning Kamp 96716b4a343SChristian Weisgerber #if 0 96816b4a343SChristian Weisgerber /* 96916b4a343SChristian Weisgerber * This is for reference. We have a table-driven version 97016b4a343SChristian Weisgerber * of the little-endian crc32 generator, which is faster 97116b4a343SChristian Weisgerber * than the double-loop. 97216b4a343SChristian Weisgerber */ 97316b4a343SChristian Weisgerber uint32_t 97416b4a343SChristian Weisgerber ether_crc32_le(const uint8_t *buf, size_t len) 97516b4a343SChristian Weisgerber { 97616b4a343SChristian Weisgerber size_t i; 97716b4a343SChristian Weisgerber uint32_t crc; 97816b4a343SChristian Weisgerber int bit; 97916b4a343SChristian Weisgerber uint8_t data; 98016b4a343SChristian Weisgerber 98116b4a343SChristian Weisgerber crc = 0xffffffff; /* initial value */ 98216b4a343SChristian Weisgerber 98316b4a343SChristian Weisgerber for (i = 0; i < len; i++) { 98416b4a343SChristian Weisgerber for (data = *buf++, bit = 0; bit < 8; bit++, data >>= 1) 98516b4a343SChristian Weisgerber carry = (crc ^ data) & 1; 98616b4a343SChristian Weisgerber crc >>= 1; 98716b4a343SChristian Weisgerber if (carry) 98816b4a343SChristian Weisgerber crc = (crc ^ ETHER_CRC_POLY_LE); 98916b4a343SChristian Weisgerber } 99016b4a343SChristian Weisgerber 99116b4a343SChristian Weisgerber return (crc); 99216b4a343SChristian Weisgerber } 99316b4a343SChristian Weisgerber #else 99416b4a343SChristian Weisgerber uint32_t 99516b4a343SChristian Weisgerber ether_crc32_le(const uint8_t *buf, size_t len) 99616b4a343SChristian Weisgerber { 99716b4a343SChristian Weisgerber static const uint32_t crctab[] = { 99816b4a343SChristian Weisgerber 0x00000000, 0x1db71064, 0x3b6e20c8, 0x26d930ac, 99916b4a343SChristian Weisgerber 0x76dc4190, 0x6b6b51f4, 0x4db26158, 0x5005713c, 100016b4a343SChristian Weisgerber 0xedb88320, 0xf00f9344, 0xd6d6a3e8, 0xcb61b38c, 100116b4a343SChristian Weisgerber 0x9b64c2b0, 0x86d3d2d4, 0xa00ae278, 0xbdbdf21c 100216b4a343SChristian Weisgerber }; 100316b4a343SChristian Weisgerber size_t i; 100416b4a343SChristian Weisgerber uint32_t crc; 100516b4a343SChristian Weisgerber 100616b4a343SChristian Weisgerber crc = 0xffffffff; /* initial value */ 100716b4a343SChristian Weisgerber 100816b4a343SChristian Weisgerber for (i = 0; i < len; i++) { 100916b4a343SChristian Weisgerber crc ^= buf[i]; 101016b4a343SChristian Weisgerber crc = (crc >> 4) ^ crctab[crc & 0xf]; 101116b4a343SChristian Weisgerber crc = (crc >> 4) ^ crctab[crc & 0xf]; 101216b4a343SChristian Weisgerber } 101316b4a343SChristian Weisgerber 101416b4a343SChristian Weisgerber return (crc); 101516b4a343SChristian Weisgerber } 101616b4a343SChristian Weisgerber #endif 101716b4a343SChristian Weisgerber 101816b4a343SChristian Weisgerber uint32_t 101916b4a343SChristian Weisgerber ether_crc32_be(const uint8_t *buf, size_t len) 102016b4a343SChristian Weisgerber { 102116b4a343SChristian Weisgerber size_t i; 102216b4a343SChristian Weisgerber uint32_t crc, carry; 102316b4a343SChristian Weisgerber int bit; 102416b4a343SChristian Weisgerber uint8_t data; 102516b4a343SChristian Weisgerber 102616b4a343SChristian Weisgerber crc = 0xffffffff; /* initial value */ 102716b4a343SChristian Weisgerber 102816b4a343SChristian Weisgerber for (i = 0; i < len; i++) { 102916b4a343SChristian Weisgerber for (data = *buf++, bit = 0; bit < 8; bit++, data >>= 1) { 103016b4a343SChristian Weisgerber carry = ((crc & 0x80000000) ? 1 : 0) ^ (data & 0x01); 103116b4a343SChristian Weisgerber crc <<= 1; 103216b4a343SChristian Weisgerber if (carry) 103316b4a343SChristian Weisgerber crc = (crc ^ ETHER_CRC_POLY_BE) | carry; 103416b4a343SChristian Weisgerber } 103516b4a343SChristian Weisgerber } 103616b4a343SChristian Weisgerber 103716b4a343SChristian Weisgerber return (crc); 103816b4a343SChristian Weisgerber } 103916b4a343SChristian Weisgerber 1040fb583156SDavid Greenman int 104172fd1b6aSDag-Erling Smørgrav ether_ioctl(struct ifnet *ifp, int command, caddr_t data) 104230106f6aSPoul-Henning Kamp { 104330106f6aSPoul-Henning Kamp struct ifaddr *ifa = (struct ifaddr *) data; 104430106f6aSPoul-Henning Kamp struct ifreq *ifr = (struct ifreq *) data; 1045fb583156SDavid Greenman int error = 0; 104630106f6aSPoul-Henning Kamp 104730106f6aSPoul-Henning Kamp switch (command) { 104830106f6aSPoul-Henning Kamp case SIOCSIFADDR: 104930106f6aSPoul-Henning Kamp ifp->if_flags |= IFF_UP; 105030106f6aSPoul-Henning Kamp 105130106f6aSPoul-Henning Kamp switch (ifa->ifa_addr->sa_family) { 105230106f6aSPoul-Henning Kamp #ifdef INET 105330106f6aSPoul-Henning Kamp case AF_INET: 105430106f6aSPoul-Henning Kamp ifp->if_init(ifp->if_softc); /* before arpwhohas */ 1055322dcb8dSMax Khon arp_ifinit(ifp, ifa); 105630106f6aSPoul-Henning Kamp break; 105730106f6aSPoul-Henning Kamp #endif 105830106f6aSPoul-Henning Kamp #ifdef IPX 105930106f6aSPoul-Henning Kamp /* 106030106f6aSPoul-Henning Kamp * XXX - This code is probably wrong 106130106f6aSPoul-Henning Kamp */ 106230106f6aSPoul-Henning Kamp case AF_IPX: 106330106f6aSPoul-Henning Kamp { 1064098a8c3bSMatthew N. Dodd struct ipx_addr *ina = &(IA_SIPX(ifa)->sipx_addr); 106530106f6aSPoul-Henning Kamp 106630106f6aSPoul-Henning Kamp if (ipx_nullhost(*ina)) 106730106f6aSPoul-Henning Kamp ina->x_host = 106886101139SPoul-Henning Kamp *(union ipx_host *) 1069fc74a9f9SBrooks Davis IFP2ENADDR(ifp); 107030106f6aSPoul-Henning Kamp else { 107130106f6aSPoul-Henning Kamp bcopy((caddr_t) ina->x_host.c_host, 1072fc74a9f9SBrooks Davis (caddr_t) IFP2ENADDR(ifp), 1073fc74a9f9SBrooks Davis ETHER_ADDR_LEN); 107430106f6aSPoul-Henning Kamp } 107530106f6aSPoul-Henning Kamp 107630106f6aSPoul-Henning Kamp /* 107730106f6aSPoul-Henning Kamp * Set new address 107830106f6aSPoul-Henning Kamp */ 107930106f6aSPoul-Henning Kamp ifp->if_init(ifp->if_softc); 108030106f6aSPoul-Henning Kamp break; 108130106f6aSPoul-Henning Kamp } 108230106f6aSPoul-Henning Kamp #endif 108330106f6aSPoul-Henning Kamp default: 108430106f6aSPoul-Henning Kamp ifp->if_init(ifp->if_softc); 108530106f6aSPoul-Henning Kamp break; 108630106f6aSPoul-Henning Kamp } 108730106f6aSPoul-Henning Kamp break; 108830106f6aSPoul-Henning Kamp 108930106f6aSPoul-Henning Kamp case SIOCGIFADDR: 109030106f6aSPoul-Henning Kamp { 109130106f6aSPoul-Henning Kamp struct sockaddr *sa; 109230106f6aSPoul-Henning Kamp 109330106f6aSPoul-Henning Kamp sa = (struct sockaddr *) & ifr->ifr_data; 1094fc74a9f9SBrooks Davis bcopy(IFP2ENADDR(ifp), 109530106f6aSPoul-Henning Kamp (caddr_t) sa->sa_data, ETHER_ADDR_LEN); 109630106f6aSPoul-Henning Kamp } 109730106f6aSPoul-Henning Kamp break; 1098fb583156SDavid Greenman 1099fb583156SDavid Greenman case SIOCSIFMTU: 1100fb583156SDavid Greenman /* 1101fb583156SDavid Greenman * Set the interface MTU. 1102fb583156SDavid Greenman */ 1103fb583156SDavid Greenman if (ifr->ifr_mtu > ETHERMTU) { 1104fb583156SDavid Greenman error = EINVAL; 1105fb583156SDavid Greenman } else { 1106fb583156SDavid Greenman ifp->if_mtu = ifr->ifr_mtu; 110730106f6aSPoul-Henning Kamp } 1108fb583156SDavid Greenman break; 1109c1d93b05SSam Leffler default: 1110c1d93b05SSam Leffler error = EINVAL; /* XXX netbsd has ENOTTY??? */ 1111c1d93b05SSam Leffler break; 1112fb583156SDavid Greenman } 1113fb583156SDavid Greenman return (error); 111430106f6aSPoul-Henning Kamp } 11151158dfb7SGarrett Wollman 111637c84183SPoul-Henning Kamp static int 111772fd1b6aSDag-Erling Smørgrav ether_resolvemulti(struct ifnet *ifp, struct sockaddr **llsa, 111872fd1b6aSDag-Erling Smørgrav struct sockaddr *sa) 11191158dfb7SGarrett Wollman { 11201158dfb7SGarrett Wollman struct sockaddr_dl *sdl; 1121d7647d96SDag-Erling Smørgrav #ifdef INET 11221158dfb7SGarrett Wollman struct sockaddr_in *sin; 1123d7647d96SDag-Erling Smørgrav #endif 112482cd038dSYoshinobu Inoue #ifdef INET6 112582cd038dSYoshinobu Inoue struct sockaddr_in6 *sin6; 112682cd038dSYoshinobu Inoue #endif 11271158dfb7SGarrett Wollman u_char *e_addr; 11281158dfb7SGarrett Wollman 11291158dfb7SGarrett Wollman switch(sa->sa_family) { 11301158dfb7SGarrett Wollman case AF_LINK: 11317f33a738SJulian Elischer /* 11327f33a738SJulian Elischer * No mapping needed. Just check that it's a valid MC address. 11337f33a738SJulian Elischer */ 11341158dfb7SGarrett Wollman sdl = (struct sockaddr_dl *)sa; 11351158dfb7SGarrett Wollman e_addr = LLADDR(sdl); 1136086e98c4SBruce M Simpson if (!ETHER_IS_MULTICAST(e_addr)) 11371158dfb7SGarrett Wollman return EADDRNOTAVAIL; 11381158dfb7SGarrett Wollman *llsa = 0; 11391158dfb7SGarrett Wollman return 0; 11401158dfb7SGarrett Wollman 11411158dfb7SGarrett Wollman #ifdef INET 11421158dfb7SGarrett Wollman case AF_INET: 11431158dfb7SGarrett Wollman sin = (struct sockaddr_in *)sa; 11441158dfb7SGarrett Wollman if (!IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) 11451158dfb7SGarrett Wollman return EADDRNOTAVAIL; 11461158dfb7SGarrett Wollman MALLOC(sdl, struct sockaddr_dl *, sizeof *sdl, M_IFMADDR, 1147a163d034SWarner Losh M_WAITOK|M_ZERO); 11481158dfb7SGarrett Wollman sdl->sdl_len = sizeof *sdl; 11491158dfb7SGarrett Wollman sdl->sdl_family = AF_LINK; 11501158dfb7SGarrett Wollman sdl->sdl_index = ifp->if_index; 11511158dfb7SGarrett Wollman sdl->sdl_type = IFT_ETHER; 11521158dfb7SGarrett Wollman sdl->sdl_alen = ETHER_ADDR_LEN; 11531158dfb7SGarrett Wollman e_addr = LLADDR(sdl); 11541158dfb7SGarrett Wollman ETHER_MAP_IP_MULTICAST(&sin->sin_addr, e_addr); 11551158dfb7SGarrett Wollman *llsa = (struct sockaddr *)sdl; 11561158dfb7SGarrett Wollman return 0; 11571158dfb7SGarrett Wollman #endif 115882cd038dSYoshinobu Inoue #ifdef INET6 115982cd038dSYoshinobu Inoue case AF_INET6: 116082cd038dSYoshinobu Inoue sin6 = (struct sockaddr_in6 *)sa; 1161595b8a1cSJun-ichiro itojun Hagino if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { 1162595b8a1cSJun-ichiro itojun Hagino /* 1163595b8a1cSJun-ichiro itojun Hagino * An IP6 address of 0 means listen to all 1164595b8a1cSJun-ichiro itojun Hagino * of the Ethernet multicast address used for IP6. 1165595b8a1cSJun-ichiro itojun Hagino * (This is used for multicast routers.) 1166595b8a1cSJun-ichiro itojun Hagino */ 1167595b8a1cSJun-ichiro itojun Hagino ifp->if_flags |= IFF_ALLMULTI; 1168595b8a1cSJun-ichiro itojun Hagino *llsa = 0; 1169595b8a1cSJun-ichiro itojun Hagino return 0; 1170595b8a1cSJun-ichiro itojun Hagino } 117182cd038dSYoshinobu Inoue if (!IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) 117282cd038dSYoshinobu Inoue return EADDRNOTAVAIL; 117382cd038dSYoshinobu Inoue MALLOC(sdl, struct sockaddr_dl *, sizeof *sdl, M_IFMADDR, 1174a163d034SWarner Losh M_WAITOK|M_ZERO); 117582cd038dSYoshinobu Inoue sdl->sdl_len = sizeof *sdl; 117682cd038dSYoshinobu Inoue sdl->sdl_family = AF_LINK; 117782cd038dSYoshinobu Inoue sdl->sdl_index = ifp->if_index; 117882cd038dSYoshinobu Inoue sdl->sdl_type = IFT_ETHER; 117982cd038dSYoshinobu Inoue sdl->sdl_alen = ETHER_ADDR_LEN; 118082cd038dSYoshinobu Inoue e_addr = LLADDR(sdl); 118182cd038dSYoshinobu Inoue ETHER_MAP_IPV6_MULTICAST(&sin6->sin6_addr, e_addr); 118282cd038dSYoshinobu Inoue *llsa = (struct sockaddr *)sdl; 118382cd038dSYoshinobu Inoue return 0; 118482cd038dSYoshinobu Inoue #endif 11851158dfb7SGarrett Wollman 11861158dfb7SGarrett Wollman default: 11871158dfb7SGarrett Wollman /* 11881158dfb7SGarrett Wollman * Well, the text isn't quite right, but it's the name 11891158dfb7SGarrett Wollman * that counts... 11901158dfb7SGarrett Wollman */ 11911158dfb7SGarrett Wollman return EAFNOSUPPORT; 11921158dfb7SGarrett Wollman } 11931158dfb7SGarrett Wollman } 119440811c14SMatthew N. Dodd 1195fc74a9f9SBrooks Davis static void* 1196fc74a9f9SBrooks Davis ether_alloc(u_char type, struct ifnet *ifp) 1197fc74a9f9SBrooks Davis { 1198fc74a9f9SBrooks Davis struct arpcom *ac; 1199fc74a9f9SBrooks Davis 1200fc74a9f9SBrooks Davis ac = malloc(sizeof(struct arpcom), M_ARPCOM, M_WAITOK | M_ZERO); 1201fc74a9f9SBrooks Davis ac->ac_ifp = ifp; 1202fc74a9f9SBrooks Davis 1203fc74a9f9SBrooks Davis return (ac); 1204fc74a9f9SBrooks Davis } 1205fc74a9f9SBrooks Davis 1206fc74a9f9SBrooks Davis static void 1207fc74a9f9SBrooks Davis ether_free(void *com, u_char type) 1208fc74a9f9SBrooks Davis { 1209fc74a9f9SBrooks Davis 1210fc74a9f9SBrooks Davis free(com, M_ARPCOM); 1211fc74a9f9SBrooks Davis } 1212fc74a9f9SBrooks Davis 1213fc74a9f9SBrooks Davis static int 1214fc74a9f9SBrooks Davis ether_modevent(module_t mod, int type, void *data) 1215fc74a9f9SBrooks Davis { 1216fc74a9f9SBrooks Davis 1217fc74a9f9SBrooks Davis switch (type) { 1218fc74a9f9SBrooks Davis case MOD_LOAD: 1219fc74a9f9SBrooks Davis if_register_com_alloc(IFT_ETHER, ether_alloc, ether_free); 1220fc74a9f9SBrooks Davis break; 1221fc74a9f9SBrooks Davis case MOD_UNLOAD: 1222fc74a9f9SBrooks Davis if_deregister_com_alloc(IFT_ETHER); 1223fc74a9f9SBrooks Davis break; 1224fc74a9f9SBrooks Davis default: 1225fc74a9f9SBrooks Davis return EOPNOTSUPP; 1226fc74a9f9SBrooks Davis } 1227fc74a9f9SBrooks Davis 1228fc74a9f9SBrooks Davis return (0); 1229fc74a9f9SBrooks Davis } 1230fc74a9f9SBrooks Davis 123140811c14SMatthew N. Dodd static moduledata_t ether_mod = { 123240811c14SMatthew N. Dodd "ether", 1233fc74a9f9SBrooks Davis ether_modevent, 123440811c14SMatthew N. Dodd 0 123540811c14SMatthew N. Dodd }; 123640811c14SMatthew N. Dodd 1237fc74a9f9SBrooks Davis DECLARE_MODULE(ether, ether_mod, SI_SUB_INIT_IF, SI_ORDER_ANY); 123840811c14SMatthew N. Dodd MODULE_VERSION(ether, 1); 1239