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 * 3. All advertising materials mentioning features or use of this software 14df8bae1dSRodney W. Grimes * must display the following acknowledgement: 15df8bae1dSRodney W. Grimes * This product includes software developed by the University of 16df8bae1dSRodney W. Grimes * California, Berkeley and its contributors. 17df8bae1dSRodney W. Grimes * 4. Neither the name of the University nor the names of its contributors 18df8bae1dSRodney W. Grimes * may be used to endorse or promote products derived from this software 19df8bae1dSRodney W. Grimes * without specific prior written permission. 20df8bae1dSRodney W. Grimes * 21df8bae1dSRodney W. Grimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22df8bae1dSRodney W. Grimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23df8bae1dSRodney W. Grimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24df8bae1dSRodney W. Grimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25df8bae1dSRodney W. Grimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26df8bae1dSRodney W. Grimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27df8bae1dSRodney W. Grimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28df8bae1dSRodney W. Grimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29df8bae1dSRodney W. Grimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30df8bae1dSRodney W. Grimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31df8bae1dSRodney W. Grimes * SUCH DAMAGE. 32df8bae1dSRodney W. Grimes * 33df8bae1dSRodney W. Grimes * @(#)if_ethersubr.c 8.1 (Berkeley) 6/10/93 34c3aac50fSPeter Wemm * $FreeBSD$ 35df8bae1dSRodney W. Grimes */ 36df8bae1dSRodney W. Grimes 377262d3e4SEivind Eklund #include "opt_atalk.h" 381d5e9e22SEivind Eklund #include "opt_inet.h" 39cfa1ca9dSYoshinobu Inoue #include "opt_inet6.h" 40430df5f4SEivind Eklund #include "opt_ipx.h" 41fb5fbe46SLuigi Rizzo #include "opt_bdg.h" 4243b29369SRobert Watson #include "opt_mac.h" 434cf49a43SJulian Elischer #include "opt_netgraph.h" 44430df5f4SEivind Eklund 45df8bae1dSRodney W. Grimes #include <sys/param.h> 46df8bae1dSRodney W. Grimes #include <sys/systm.h> 47df8bae1dSRodney W. Grimes #include <sys/kernel.h> 4843b29369SRobert Watson #include <sys/mac.h> 49df8bae1dSRodney W. Grimes #include <sys/malloc.h> 50df8bae1dSRodney W. Grimes #include <sys/mbuf.h> 5110b1fde0SMark Murray #include <sys/random.h> 52df8bae1dSRodney W. Grimes #include <sys/socket.h> 5351a53488SBruce Evans #include <sys/sockio.h> 54602d513cSGarrett Wollman #include <sys/sysctl.h> 55df8bae1dSRodney W. Grimes 56df8bae1dSRodney W. Grimes #include <net/if.h> 57df8bae1dSRodney W. Grimes #include <net/netisr.h> 58df8bae1dSRodney W. Grimes #include <net/route.h> 59df8bae1dSRodney W. Grimes #include <net/if_llc.h> 60df8bae1dSRodney W. Grimes #include <net/if_dl.h> 61df8bae1dSRodney W. Grimes #include <net/if_types.h> 622e2de7f2SArchie Cobbs #include <net/bpf.h> 63e1e1452dSArchie Cobbs #include <net/ethernet.h> 64db69a05dSPaul Saab #include <net/bridge.h> 65c1d93b05SSam Leffler #include <net/if_vlan_var.h> 66df8bae1dSRodney W. Grimes 6782cd038dSYoshinobu Inoue #if defined(INET) || defined(INET6) 68df8bae1dSRodney W. Grimes #include <netinet/in.h> 69df8bae1dSRodney W. Grimes #include <netinet/in_var.h> 70df8bae1dSRodney W. Grimes #include <netinet/if_ether.h> 714b984093SLuigi Rizzo #include <netinet/ip_fw.h> 724b984093SLuigi Rizzo #include <netinet/ip_dummynet.h> 731d5e9e22SEivind Eklund #endif 7482cd038dSYoshinobu Inoue #ifdef INET6 7582cd038dSYoshinobu Inoue #include <netinet6/nd6.h> 7682cd038dSYoshinobu Inoue #endif 77df8bae1dSRodney W. Grimes 78cc6a66f2SJulian Elischer #ifdef IPX 79cc6a66f2SJulian Elischer #include <netipx/ipx.h> 80cc6a66f2SJulian Elischer #include <netipx/ipx_if.h> 814f93599fSBoris Popov int (*ef_inputp)(struct ifnet*, struct ether_header *eh, struct mbuf *m); 825accfb8cSBoris Popov int (*ef_outputp)(struct ifnet *ifp, struct mbuf **mp, 832a7e8eceSBoris Popov struct sockaddr *dst, short *tp, int *hlen); 84cc6a66f2SJulian Elischer #endif 85cc6a66f2SJulian Elischer 86df8bae1dSRodney W. Grimes #ifdef NS 87df8bae1dSRodney W. Grimes #include <netns/ns.h> 88df8bae1dSRodney W. Grimes #include <netns/ns_if.h> 89d0ec898dSJordan K. Hubbard ushort ns_nettype; 9088e038feSJordan K. Hubbard int ether_outputdebug = 0; 9188e038feSJordan K. Hubbard int ether_inputdebug = 0; 92df8bae1dSRodney W. Grimes #endif 93df8bae1dSRodney W. Grimes 94655929bfSJulian Elischer #ifdef NETATALK 95655929bfSJulian Elischer #include <netatalk/at.h> 96655929bfSJulian Elischer #include <netatalk/at_var.h> 97655929bfSJulian Elischer #include <netatalk/at_extern.h> 98655929bfSJulian Elischer 99655929bfSJulian Elischer #define llc_snap_org_code llc_un.type_snap.org_code 100655929bfSJulian Elischer #define llc_snap_ether_type llc_un.type_snap.ether_type 101655929bfSJulian Elischer 102655929bfSJulian Elischer extern u_char at_org_code[3]; 103655929bfSJulian Elischer extern u_char aarp_org_code[3]; 1042cc2df49SGarrett Wollman #endif /* NETATALK */ 1052cc2df49SGarrett Wollman 106e1e1452dSArchie Cobbs /* netgraph node hooks for ng_ether(4) */ 107c1d93b05SSam Leffler void (*ng_ether_input_p)(struct ifnet *ifp, struct mbuf **mp); 108c1d93b05SSam Leffler void (*ng_ether_input_orphan_p)(struct ifnet *ifp, struct mbuf *m); 109e1e1452dSArchie Cobbs int (*ng_ether_output_p)(struct ifnet *ifp, struct mbuf **mp); 110e1e1452dSArchie Cobbs void (*ng_ether_attach_p)(struct ifnet *ifp); 111e1e1452dSArchie Cobbs void (*ng_ether_detach_p)(struct ifnet *ifp); 112e1e1452dSArchie Cobbs 113c1d93b05SSam Leffler void (*vlan_input_p)(struct ifnet *, struct mbuf *); 1149d4fe4b2SBrooks Davis 115db69a05dSPaul Saab /* bridge support */ 116cad15830SLuigi Rizzo int do_bridge; 117db69a05dSPaul Saab bridge_in_t *bridge_in_ptr; 118db69a05dSPaul Saab bdg_forward_t *bdg_forward_ptr; 119db69a05dSPaul Saab bdgtakeifaces_t *bdgtakeifaces_ptr; 120cad15830SLuigi Rizzo struct bdg_softc *ifp2sc; 121db69a05dSPaul Saab 122929ddbbbSAlfred Perlstein static int ether_resolvemulti(struct ifnet *, struct sockaddr **, 123929ddbbbSAlfred Perlstein struct sockaddr *); 124df8bae1dSRodney W. Grimes u_char etherbroadcastaddr[6] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; 1254c8e8c05SJulian Elischer #define senderr(e) do { error = (e); goto bad;} while (0) 1264c8e8c05SJulian Elischer #define IFP2AC(IFP) ((struct arpcom *)IFP) 127df8bae1dSRodney W. Grimes 1284b984093SLuigi Rizzo int 1294b984093SLuigi Rizzo ether_ipfw_chk(struct mbuf **m0, struct ifnet *dst, 130c1d93b05SSam Leffler struct ip_fw **rule, int shared); 1314b984093SLuigi Rizzo static int ether_ipfw; 1324b984093SLuigi Rizzo 133df8bae1dSRodney W. Grimes /* 134df8bae1dSRodney W. Grimes * Ethernet output routine. 135df8bae1dSRodney W. Grimes * Encapsulate a packet of type family for the local net. 136df8bae1dSRodney W. Grimes * Use trailer local net encapsulation if enough data in first 137df8bae1dSRodney W. Grimes * packet leaves a multiple of 512 bytes of data in remainder. 138df8bae1dSRodney W. Grimes * Assumes that ifp is actually pointer to arpcom structure. 139df8bae1dSRodney W. Grimes */ 140df8bae1dSRodney W. Grimes int 141d25f3712SBrian Feldman ether_output(ifp, m, dst, rt0) 142df8bae1dSRodney W. Grimes register struct ifnet *ifp; 143d25f3712SBrian Feldman struct mbuf *m; 144df8bae1dSRodney W. Grimes struct sockaddr *dst; 145df8bae1dSRodney W. Grimes struct rtentry *rt0; 146df8bae1dSRodney W. Grimes { 147df8bae1dSRodney W. Grimes short type; 148e1e1452dSArchie Cobbs int error = 0, hdrcmplt = 0; 149114ae644SMike Smith u_char esrc[6], edst[6]; 150df8bae1dSRodney W. Grimes register struct rtentry *rt; 151df8bae1dSRodney W. Grimes register struct ether_header *eh; 1529961e27dSLuigi Rizzo int loop_copy = 0; 15384dd0fd0SJulian Elischer int hlen; /* link layer header lenght */ 1544c8e8c05SJulian Elischer struct arpcom *ac = IFP2AC(ifp); 155df8bae1dSRodney W. Grimes 15643b29369SRobert Watson #ifdef MAC 15743b29369SRobert Watson error = mac_check_ifnet_transmit(ifp, m); 15843b29369SRobert Watson if (error) 15943b29369SRobert Watson senderr(error); 16043b29369SRobert Watson #endif 16143b29369SRobert Watson 162afbe3a0fSPoul-Henning Kamp if (ifp->if_flags & IFF_MONITOR) 163afbe3a0fSPoul-Henning Kamp senderr(ENETDOWN); 164df8bae1dSRodney W. Grimes if ((ifp->if_flags & (IFF_UP|IFF_RUNNING)) != (IFF_UP|IFF_RUNNING)) 165df8bae1dSRodney W. Grimes senderr(ENETDOWN); 1663bda9f9bSPoul-Henning Kamp rt = rt0; 1673bda9f9bSPoul-Henning Kamp if (rt) { 168df8bae1dSRodney W. Grimes if ((rt->rt_flags & RTF_UP) == 0) { 1693bda9f9bSPoul-Henning Kamp rt0 = rt = rtalloc1(dst, 1, 0UL); 1703bda9f9bSPoul-Henning Kamp if (rt0) 171df8bae1dSRodney W. Grimes rt->rt_refcnt--; 172df8bae1dSRodney W. Grimes else 173df8bae1dSRodney W. Grimes senderr(EHOSTUNREACH); 174df8bae1dSRodney W. Grimes } 175df8bae1dSRodney W. Grimes if (rt->rt_flags & RTF_GATEWAY) { 176df8bae1dSRodney W. Grimes if (rt->rt_gwroute == 0) 177df8bae1dSRodney W. Grimes goto lookup; 178df8bae1dSRodney W. Grimes if (((rt = rt->rt_gwroute)->rt_flags & RTF_UP) == 0) { 179df8bae1dSRodney W. Grimes rtfree(rt); rt = rt0; 180995add1aSGarrett Wollman lookup: rt->rt_gwroute = rtalloc1(rt->rt_gateway, 1, 181995add1aSGarrett Wollman 0UL); 182df8bae1dSRodney W. Grimes if ((rt = rt->rt_gwroute) == 0) 183df8bae1dSRodney W. Grimes senderr(EHOSTUNREACH); 184df8bae1dSRodney W. Grimes } 185df8bae1dSRodney W. Grimes } 186df8bae1dSRodney W. Grimes if (rt->rt_flags & RTF_REJECT) 187df8bae1dSRodney W. Grimes if (rt->rt_rmx.rmx_expire == 0 || 188227ee8a1SPoul-Henning Kamp time_second < rt->rt_rmx.rmx_expire) 189df8bae1dSRodney W. Grimes senderr(rt == rt0 ? EHOSTDOWN : EHOSTUNREACH); 190df8bae1dSRodney W. Grimes } 19184dd0fd0SJulian Elischer hlen = ETHER_HDR_LEN; 192df8bae1dSRodney W. Grimes switch (dst->sa_family) { 193df8bae1dSRodney W. Grimes #ifdef INET 194df8bae1dSRodney W. Grimes case AF_INET: 195322dcb8dSMax Khon if (!arpresolve(ifp, rt, m, dst, edst, rt0)) 196df8bae1dSRodney W. Grimes return (0); /* if not yet resolved */ 19734bed8b0SDavid Greenman type = htons(ETHERTYPE_IP); 198df8bae1dSRodney W. Grimes break; 199df8bae1dSRodney W. Grimes #endif 20082cd038dSYoshinobu Inoue #ifdef INET6 20182cd038dSYoshinobu Inoue case AF_INET6: 20282cd038dSYoshinobu Inoue if (!nd6_storelladdr(&ac->ac_if, rt, m, dst, (u_char *)edst)) { 203fef5fd23SBosko Milekic /* Something bad happened */ 20482cd038dSYoshinobu Inoue return(0); 20582cd038dSYoshinobu Inoue } 20682cd038dSYoshinobu Inoue type = htons(ETHERTYPE_IPV6); 20782cd038dSYoshinobu Inoue break; 20882cd038dSYoshinobu Inoue #endif 209cc6a66f2SJulian Elischer #ifdef IPX 210cc6a66f2SJulian Elischer case AF_IPX: 2114f93599fSBoris Popov if (ef_outputp) { 2122a7e8eceSBoris Popov error = ef_outputp(ifp, &m, dst, &type, &hlen); 2135accfb8cSBoris Popov if (error) 2145accfb8cSBoris Popov goto bad; 2154f93599fSBoris Popov } else 21634bed8b0SDavid Greenman type = htons(ETHERTYPE_IPX); 217cc6a66f2SJulian Elischer bcopy((caddr_t)&(((struct sockaddr_ipx *)dst)->sipx_addr.x_host), 218cc6a66f2SJulian Elischer (caddr_t)edst, sizeof (edst)); 219cc6a66f2SJulian Elischer break; 220cc6a66f2SJulian Elischer #endif 221655929bfSJulian Elischer #ifdef NETATALK 222655929bfSJulian Elischer case AF_APPLETALK: 2231d0eab59SJulian Elischer { 224ed7509acSJulian Elischer struct at_ifaddr *aa; 2251d0eab59SJulian Elischer 226ed7509acSJulian Elischer if ((aa = at_ifawithnet((struct sockaddr_at *)dst)) == NULL) { 2271d0eab59SJulian Elischer goto bad; 2281d0eab59SJulian Elischer } 229ed7509acSJulian Elischer if (!aarpresolve(ac, m, (struct sockaddr_at *)dst, edst)) 2301d0eab59SJulian Elischer return (0); 231655929bfSJulian Elischer /* 232ed7509acSJulian Elischer * In the phase 2 case, need to prepend an mbuf for the llc header. 233655929bfSJulian Elischer * Since we must preserve the value of m, which is passed to us by 234655929bfSJulian Elischer * value, we m_copy() the first mbuf, and use it for our llc header. 235655929bfSJulian Elischer */ 236655929bfSJulian Elischer if ( aa->aa_flags & AFA_PHASE2 ) { 237655929bfSJulian Elischer struct llc llc; 238655929bfSJulian Elischer 2392a0c503eSBosko Milekic M_PREPEND(m, sizeof(struct llc), M_TRYWAIT); 240655929bfSJulian Elischer llc.llc_dsap = llc.llc_ssap = LLC_SNAP_LSAP; 241655929bfSJulian Elischer llc.llc_control = LLC_UI; 242655929bfSJulian Elischer bcopy(at_org_code, llc.llc_snap_org_code, sizeof(at_org_code)); 243655929bfSJulian Elischer llc.llc_snap_ether_type = htons( ETHERTYPE_AT ); 244655929bfSJulian Elischer bcopy(&llc, mtod(m, caddr_t), sizeof(struct llc)); 24534bed8b0SDavid Greenman type = htons(m->m_pkthdr.len); 24684dd0fd0SJulian Elischer hlen = sizeof(struct llc) + ETHER_HDR_LEN; 247655929bfSJulian Elischer } else { 24834bed8b0SDavid Greenman type = htons(ETHERTYPE_AT); 249655929bfSJulian Elischer } 250655929bfSJulian Elischer break; 251ed7509acSJulian Elischer } 2528cdfefbdSPeter Wemm #endif /* NETATALK */ 253df8bae1dSRodney W. Grimes #ifdef NS 254df8bae1dSRodney W. Grimes case AF_NS: 25588e038feSJordan K. Hubbard switch(ns_nettype){ 25688e038feSJordan K. Hubbard default: 25788e038feSJordan K. Hubbard case 0x8137: /* Novell Ethernet_II Ethernet TYPE II */ 25888e038feSJordan K. Hubbard type = 0x8137; 25988e038feSJordan K. Hubbard break; 26088e038feSJordan K. Hubbard case 0x0: /* Novell 802.3 */ 26188e038feSJordan K. Hubbard type = htons( m->m_pkthdr.len); 26288e038feSJordan K. Hubbard break; 26388e038feSJordan K. Hubbard case 0xe0e0: /* Novell 802.2 and Token-Ring */ 2642a0c503eSBosko Milekic M_PREPEND(m, 3, M_TRYWAIT); 26588e038feSJordan K. Hubbard type = htons( m->m_pkthdr.len); 26688e038feSJordan K. Hubbard cp = mtod(m, u_char *); 26788e038feSJordan K. Hubbard *cp++ = 0xE0; 26888e038feSJordan K. Hubbard *cp++ = 0xE0; 26988e038feSJordan K. Hubbard *cp++ = 0x03; 27088e038feSJordan K. Hubbard break; 27188e038feSJordan K. Hubbard } 272df8bae1dSRodney W. Grimes bcopy((caddr_t)&(((struct sockaddr_ns *)dst)->sns_addr.x_host), 273df8bae1dSRodney W. Grimes (caddr_t)edst, sizeof (edst)); 2744c8e8c05SJulian Elischer /* 2754c8e8c05SJulian Elischer * XXX if ns_thishost is the same as the node's ethernet 2764c8e8c05SJulian Elischer * address then just the default code will catch this anyhow. 2774c8e8c05SJulian Elischer * So I'm not sure if this next clause should be here at all? 2784c8e8c05SJulian Elischer * [JRE] 2794c8e8c05SJulian Elischer */ 28088e038feSJordan K. Hubbard if (!bcmp((caddr_t)edst, (caddr_t)&ns_thishost, sizeof(edst))){ 28188e038feSJordan K. Hubbard m->m_pkthdr.rcvif = ifp; 28288e038feSJordan K. Hubbard inq = &nsintrq; 283df5e1987SJonathan Lemon if (IF_HANDOFF(inq, m, NULL)) 284df5e1987SJonathan Lemon schednetisr(NETISR_NS); 28588e038feSJordan K. Hubbard return (error); 28688e038feSJordan K. Hubbard } 28788e038feSJordan K. Hubbard if (!bcmp((caddr_t)edst, (caddr_t)&ns_broadhost, sizeof(edst))){ 2884c8e8c05SJulian Elischer m->m_flags |= M_BCAST; 28988e038feSJordan K. Hubbard } 290df8bae1dSRodney W. Grimes break; 29188e038feSJordan K. Hubbard #endif /* NS */ 292df8bae1dSRodney W. Grimes 293114ae644SMike Smith case pseudo_AF_HDRCMPLT: 294114ae644SMike Smith hdrcmplt = 1; 295114ae644SMike Smith eh = (struct ether_header *)dst->sa_data; 296114ae644SMike Smith (void)memcpy(esrc, eh->ether_shost, sizeof (esrc)); 297114ae644SMike Smith /* FALLTHROUGH */ 298114ae644SMike Smith 299df8bae1dSRodney W. Grimes case AF_UNSPEC: 3009d3f194dSJulian Elischer loop_copy = -1; /* if this is for us, don't do it */ 301df8bae1dSRodney W. Grimes eh = (struct ether_header *)dst->sa_data; 30294a5d9b6SDavid Greenman (void)memcpy(edst, eh->ether_dhost, sizeof (edst)); 303df8bae1dSRodney W. Grimes type = eh->ether_type; 304df8bae1dSRodney W. Grimes break; 305df8bae1dSRodney W. Grimes 306df8bae1dSRodney W. Grimes default: 30729e1b85fSBrooks Davis if_printf(ifp, "can't handle af%d\n", dst->sa_family); 308df8bae1dSRodney W. Grimes senderr(EAFNOSUPPORT); 309df8bae1dSRodney W. Grimes } 310df8bae1dSRodney W. Grimes 311df8bae1dSRodney W. Grimes /* 312df8bae1dSRodney W. Grimes * Add local net header. If no space in first mbuf, 313df8bae1dSRodney W. Grimes * allocate another. 314df8bae1dSRodney W. Grimes */ 315df8bae1dSRodney W. Grimes M_PREPEND(m, sizeof (struct ether_header), M_DONTWAIT); 316df8bae1dSRodney W. Grimes if (m == 0) 317df8bae1dSRodney W. Grimes senderr(ENOBUFS); 318df8bae1dSRodney W. Grimes eh = mtod(m, struct ether_header *); 31994a5d9b6SDavid Greenman (void)memcpy(&eh->ether_type, &type, 320df8bae1dSRodney W. Grimes sizeof(eh->ether_type)); 32194a5d9b6SDavid Greenman (void)memcpy(eh->ether_dhost, edst, sizeof (edst)); 322114ae644SMike Smith if (hdrcmplt) 323114ae644SMike Smith (void)memcpy(eh->ether_shost, esrc, 324114ae644SMike Smith sizeof(eh->ether_shost)); 325114ae644SMike Smith else 32694a5d9b6SDavid Greenman (void)memcpy(eh->ether_shost, ac->ac_enaddr, 327df8bae1dSRodney W. Grimes sizeof(eh->ether_shost)); 328ed7509acSJulian Elischer 329ed7509acSJulian Elischer /* 330ed7509acSJulian Elischer * If a simplex interface, and the packet is being sent to our 331ed7509acSJulian Elischer * Ethernet address or a broadcast address, loopback a copy. 332ed7509acSJulian Elischer * XXX To make a simplex device behave exactly like a duplex 333ed7509acSJulian Elischer * device, we should copy in the case of sending to our own 334ed7509acSJulian Elischer * ethernet address (thus letting the original actually appear 335ed7509acSJulian Elischer * on the wire). However, we don't do that here for security 336ed7509acSJulian Elischer * reasons and compatibility with the original behavior. 337ed7509acSJulian Elischer */ 3384c8e8c05SJulian Elischer if ((ifp->if_flags & IFF_SIMPLEX) && (loop_copy != -1)) { 3393cd67511SJesper Skriver int csum_flags = 0; 3403cd67511SJesper Skriver 3413cd67511SJesper Skriver if (m->m_pkthdr.csum_flags & CSUM_IP) 3423cd67511SJesper Skriver csum_flags |= (CSUM_IP_CHECKED|CSUM_IP_VALID); 3433cd67511SJesper Skriver if (m->m_pkthdr.csum_flags & CSUM_DELAY_DATA) 3443cd67511SJesper Skriver csum_flags |= (CSUM_DATA_VALID|CSUM_PSEUDO_HDR); 3459d3f194dSJulian Elischer if ((m->m_flags & M_BCAST) || (loop_copy > 0)) { 346ed7509acSJulian Elischer struct mbuf *n = m_copy(m, 0, (int)M_COPYALL); 347ed7509acSJulian Elischer 3483cd67511SJesper Skriver n->m_pkthdr.csum_flags |= csum_flags; 3493cd67511SJesper Skriver if (csum_flags & CSUM_DATA_VALID) 3503cd67511SJesper Skriver n->m_pkthdr.csum_data = 0xffff; 3513cd67511SJesper Skriver 35206a429a3SArchie Cobbs (void) if_simloop(ifp, n, dst->sa_family, hlen); 353ed7509acSJulian Elischer } else if (bcmp(eh->ether_dhost, 354ed7509acSJulian Elischer eh->ether_shost, ETHER_ADDR_LEN) == 0) { 3553cd67511SJesper Skriver m->m_pkthdr.csum_flags |= csum_flags; 3563cd67511SJesper Skriver if (csum_flags & CSUM_DATA_VALID) 3573cd67511SJesper Skriver m->m_pkthdr.csum_data = 0xffff; 35806a429a3SArchie Cobbs (void) if_simloop(ifp, m, dst->sa_family, hlen); 359ed7509acSJulian Elischer return (0); /* XXX */ 360ed7509acSJulian Elischer } 361ed7509acSJulian Elischer } 3622e2de7f2SArchie Cobbs 363e1e1452dSArchie Cobbs /* Handle ng_ether(4) processing, if any */ 364e1e1452dSArchie Cobbs if (ng_ether_output_p != NULL) { 365e1e1452dSArchie Cobbs if ((error = (*ng_ether_output_p)(ifp, &m)) != 0) { 366e1e1452dSArchie Cobbs bad: if (m != NULL) 367e1e1452dSArchie Cobbs m_freem(m); 368e1e1452dSArchie Cobbs return (error); 369e1e1452dSArchie Cobbs } 370e1e1452dSArchie Cobbs if (m == NULL) 371e1e1452dSArchie Cobbs return (0); 372e1e1452dSArchie Cobbs } 373e1e1452dSArchie Cobbs 374e1e1452dSArchie Cobbs /* Continue with link-layer output */ 375e1e1452dSArchie Cobbs return ether_output_frame(ifp, m); 376e1e1452dSArchie Cobbs } 377e1e1452dSArchie Cobbs 378e1e1452dSArchie Cobbs /* 379e1e1452dSArchie Cobbs * Ethernet link layer output routine to send a raw frame to the device. 380e1e1452dSArchie Cobbs * 381e1e1452dSArchie Cobbs * This assumes that the 14 byte Ethernet header is present and contiguous 382e1e1452dSArchie Cobbs * in the first mbuf (if BRIDGE'ing). 383e1e1452dSArchie Cobbs */ 384e1e1452dSArchie Cobbs int 385c1d93b05SSam Leffler ether_output_frame(struct ifnet *ifp, struct mbuf *m) 386e1e1452dSArchie Cobbs { 3874b984093SLuigi Rizzo struct ip_fw *rule = NULL; 3882b25acc1SLuigi Rizzo 3892b25acc1SLuigi Rizzo /* Extract info from dummynet tag, ignore others */ 3902b25acc1SLuigi Rizzo for (; m->m_type == MT_TAG; m = m->m_next) 3912b25acc1SLuigi Rizzo if (m->m_flags == PACKET_TAG_DUMMYNET) 3922b25acc1SLuigi Rizzo rule = ((struct dn_pkt *)m)->rule; 3932b25acc1SLuigi Rizzo 394c1d93b05SSam Leffler if (rule == NULL && BDG_ACTIVE(ifp)) { 395c1d93b05SSam Leffler /* 396c1d93b05SSam Leffler * Beware, the bridge code notices the null rcvif and 397c1d93b05SSam Leffler * uses that identify that it's being called from 398c1d93b05SSam Leffler * ether_output as opposd to ether_input. Yech. 399c1d93b05SSam Leffler */ 400fb5fbe46SLuigi Rizzo m->m_pkthdr.rcvif = NULL; 401c1d93b05SSam Leffler m = bdg_forward_ptr(m, ifp); 4022e2de7f2SArchie Cobbs if (m != NULL) 4032e2de7f2SArchie Cobbs m_freem(m); 4041db59ce6SEivind Eklund return (0); 405fb5fbe46SLuigi Rizzo } 4064b984093SLuigi Rizzo if (IPFW_LOADED && ether_ipfw != 0) { 407c1d93b05SSam Leffler if (ether_ipfw_chk(&m, ifp, &rule, 0) == 0) { 4084b984093SLuigi Rizzo if (m) { 4094b984093SLuigi Rizzo m_freem(m); 4104b984093SLuigi Rizzo return ENOBUFS; /* pkt dropped */ 4114b984093SLuigi Rizzo } else 4124b984093SLuigi Rizzo return 0; /* consumed e.g. in a pipe */ 4134b984093SLuigi Rizzo } 4144b984093SLuigi Rizzo } 4152b25acc1SLuigi Rizzo 416df8bae1dSRodney W. Grimes /* 417df5e1987SJonathan Lemon * Queue message on interface, update output statistics if 418df5e1987SJonathan Lemon * successful, and start output if interface not yet active. 419df8bae1dSRodney W. Grimes */ 420c1d93b05SSam Leffler return (IF_HANDOFF(&ifp->if_snd, m, ifp) ? 0 : ENOBUFS); 421df8bae1dSRodney W. Grimes } 422df8bae1dSRodney W. Grimes 423df8bae1dSRodney W. Grimes /* 4244b984093SLuigi Rizzo * ipfw processing for ethernet packets (in and out). 4254b984093SLuigi Rizzo * The second parameter is NULL from ether_demux, and ifp from 4264b984093SLuigi Rizzo * ether_output_frame. This section of code could be used from 4272f8ebbf4SLuigi Rizzo * bridge.c as well as long as we use some extra info 4284b984093SLuigi Rizzo * to distinguish that case from ether_output_frame(); 4294b984093SLuigi Rizzo */ 4304b984093SLuigi Rizzo int 4314b984093SLuigi Rizzo ether_ipfw_chk(struct mbuf **m0, struct ifnet *dst, 432c1d93b05SSam Leffler struct ip_fw **rule, int shared) 4334b984093SLuigi Rizzo { 434c1d93b05SSam Leffler struct ether_header *eh; 435c1d93b05SSam Leffler struct ether_header save_eh; 436c1d93b05SSam Leffler struct mbuf *m; 4374b984093SLuigi Rizzo int i; 4382b25acc1SLuigi Rizzo struct ip_fw_args args; 4394b984093SLuigi Rizzo 44059083544SDavid E. O'Brien if (*rule != NULL /*&& fw_one_pass*/) /* HACK! need to obey fw_one_pass */ 441015d72e0SLuigi Rizzo return 1; /* dummynet packet, already partially processed */ 4422f8ebbf4SLuigi Rizzo 4434b984093SLuigi Rizzo /* 4442f8ebbf4SLuigi Rizzo * I need some amt of data to be contiguous, and in case others need 4454b984093SLuigi Rizzo * the packet (shared==1) also better be in the first mbuf. 4464b984093SLuigi Rizzo */ 447c1d93b05SSam Leffler m = *m0; 448c1d93b05SSam Leffler i = min( m->m_pkthdr.len, max_protohdr); 449c1d93b05SSam Leffler if ( shared || m->m_len < i) { 450c1d93b05SSam Leffler m = m_pullup(m, i); 451c1d93b05SSam Leffler if (m == NULL) { 452c1d93b05SSam Leffler *m0 = m; 4534b984093SLuigi Rizzo return 0; 4544b984093SLuigi Rizzo } 455c1d93b05SSam Leffler } 456c1d93b05SSam Leffler eh = mtod(m, struct ether_header *); 457c1d93b05SSam Leffler save_eh = *eh; /* save copy for restore below */ 458c1d93b05SSam Leffler m_adj(m, ETHER_HDR_LEN); /* strip ethernet header */ 4594b984093SLuigi Rizzo 460c1d93b05SSam Leffler args.m = m; /* the packet we are looking at */ 4612b25acc1SLuigi Rizzo args.oif = dst; /* destination, if any */ 4622b25acc1SLuigi Rizzo args.divert_rule = 0; /* we do not support divert yet */ 4632b25acc1SLuigi Rizzo args.rule = *rule; /* matching rule to restart */ 4642b25acc1SLuigi Rizzo args.next_hop = NULL; /* we do not support forward yet */ 4652b25acc1SLuigi Rizzo args.eh = &save_eh; /* MAC header for bridged/MAC packets */ 4662b25acc1SLuigi Rizzo i = ip_fw_chk_ptr(&args); 467c1d93b05SSam Leffler m = args.m; 468c1d93b05SSam Leffler if (m != NULL) { 469c1d93b05SSam Leffler /* 470c1d93b05SSam Leffler * Restore Ethernet header, as needed, in case the 471c1d93b05SSam Leffler * mbuf chain was replaced by ipfw. 472c1d93b05SSam Leffler */ 473c1d93b05SSam Leffler M_PREPEND(m, ETHER_HDR_LEN, M_NOWAIT); 474c1d93b05SSam Leffler if (m == NULL) { 475c1d93b05SSam Leffler *m0 = m; 476c1d93b05SSam Leffler return 0; 477c1d93b05SSam Leffler } 478c1d93b05SSam Leffler if (eh != mtod(m, struct ether_header *)) 479c1d93b05SSam Leffler bcopy(&save_eh, mtod(m, struct ether_header *), 480c1d93b05SSam Leffler ETHER_HDR_LEN); 481c1d93b05SSam Leffler } 482c1d93b05SSam Leffler *m0 = m; 4832b25acc1SLuigi Rizzo *rule = args.rule; 4842b25acc1SLuigi Rizzo 485c1d93b05SSam Leffler if ( (i & IP_FW_PORT_DENY_FLAG) || m == NULL) /* drop */ 4864b984093SLuigi Rizzo return 0; 4874b984093SLuigi Rizzo 4884b984093SLuigi Rizzo if (i == 0) /* a PASS rule. */ 4894b984093SLuigi Rizzo return 1; 4904b984093SLuigi Rizzo 4914b984093SLuigi Rizzo if (DUMMYNET_LOADED && (i & IP_FW_PORT_DYNT_FLAG)) { 4924b984093SLuigi Rizzo /* 4934b984093SLuigi Rizzo * Pass the pkt to dummynet, which consumes it. 4944b984093SLuigi Rizzo * If shared, make a copy and keep the original. 4954b984093SLuigi Rizzo */ 4964b984093SLuigi Rizzo if (shared) { 497c1d93b05SSam Leffler m = m_copypacket(m, M_DONTWAIT); 4982b25acc1SLuigi Rizzo if (m == NULL) 4994b984093SLuigi Rizzo return 0; 5004b984093SLuigi Rizzo } else { 5012b25acc1SLuigi Rizzo /* 502c1d93b05SSam Leffler * Pass the original to dummynet and 503c1d93b05SSam Leffler * nothing back to the caller 5042b25acc1SLuigi Rizzo */ 505c1d93b05SSam Leffler *m0 = NULL ; 5064b984093SLuigi Rizzo } 5072b25acc1SLuigi Rizzo ip_dn_io_ptr(m, (i & 0xffff), 5082b25acc1SLuigi Rizzo dst ? DN_TO_ETH_OUT: DN_TO_ETH_DEMUX, &args); 5094b984093SLuigi Rizzo return 0; 5104b984093SLuigi Rizzo } 5114b984093SLuigi Rizzo /* 5122f8ebbf4SLuigi Rizzo * XXX at some point add support for divert/forward actions. 5132f8ebbf4SLuigi Rizzo * If none of the above matches, we have to drop the pkt. 5144b984093SLuigi Rizzo */ 5154b984093SLuigi Rizzo return 0; 5164b984093SLuigi Rizzo } 5174b984093SLuigi Rizzo 5184b984093SLuigi Rizzo /* 519c1d93b05SSam Leffler * Process a received Ethernet packet; the packet is in the 520c1d93b05SSam Leffler * mbuf chain m with the ethernet header at the front. 521df8bae1dSRodney W. Grimes */ 522c1d93b05SSam Leffler static void 523c1d93b05SSam Leffler ether_input(struct ifnet *ifp, struct mbuf *m) 524df8bae1dSRodney W. Grimes { 525c1d93b05SSam Leffler struct ether_header *eh; 526c1d93b05SSam Leffler u_short etype; 527df8bae1dSRodney W. Grimes 528c1d93b05SSam Leffler /* 529c1d93b05SSam Leffler * Do consistency checks to verify assumptions 530c1d93b05SSam Leffler * made by code past this point. 531c1d93b05SSam Leffler */ 532c1d93b05SSam Leffler if ((m->m_flags & M_PKTHDR) == 0) { 533c1d93b05SSam Leffler if_printf(ifp, "discard frame w/o packet header\n"); 534c1d93b05SSam Leffler ifp->if_ierrors++; 535c939f1aeSLuigi Rizzo m_freem(m); 536c939f1aeSLuigi Rizzo return; 537c939f1aeSLuigi Rizzo } 538c1d93b05SSam Leffler if (m->m_len < sizeof (struct ether_header)) { 539c1d93b05SSam Leffler /* XXX maybe should pullup? */ 540c1d93b05SSam Leffler if_printf(ifp, "discard frame w/o leading ethernet " 541c1d93b05SSam Leffler "header (len %u pkt len %u)\n", 542c1d93b05SSam Leffler m->m_len, m->m_pkthdr.len); 543c1d93b05SSam Leffler ifp->if_ierrors++; 544c1d93b05SSam Leffler m_freem(m); 545c1d93b05SSam Leffler return; 5462e2de7f2SArchie Cobbs } 547c1d93b05SSam Leffler eh = mtod(m, struct ether_header *); 548c1d93b05SSam Leffler etype = ntohs(eh->ether_type); 549c1d93b05SSam Leffler if (m->m_pkthdr.len > 550c1d93b05SSam Leffler ETHER_MAX_FRAME(ifp, etype, m->m_flags & M_HASFCS)) { 551c1d93b05SSam Leffler if_printf(ifp, "discard oversize frame " 552c1d93b05SSam Leffler "(ether type %x flags %x len %u > max %lu)\n", 553c1d93b05SSam Leffler etype, m->m_flags, m->m_pkthdr.len, 554c1d93b05SSam Leffler ETHER_MAX_FRAME(ifp, etype, 555c1d93b05SSam Leffler m->m_flags & M_HASFCS)); 556c1d93b05SSam Leffler ifp->if_ierrors++; 557c1d93b05SSam Leffler m_freem(m); 558c1d93b05SSam Leffler return; 559c1d93b05SSam Leffler } 560c1d93b05SSam Leffler if (m->m_pkthdr.rcvif == NULL) { 561c1d93b05SSam Leffler if_printf(ifp, "discard frame w/o interface pointer\n"); 562c1d93b05SSam Leffler ifp->if_ierrors++; 563c1d93b05SSam Leffler m_freem(m); 564c1d93b05SSam Leffler return; 565c1d93b05SSam Leffler } 566c1d93b05SSam Leffler #ifdef DIAGNOSTIC 567c1d93b05SSam Leffler if (m->m_pkthdr.rcvif != ifp) { 568c1d93b05SSam Leffler if_printf(ifp, "Warning, frame marked as received on %s%u\n", 569c1d93b05SSam Leffler m->m_pkthdr.rcvif->if_name, 570c1d93b05SSam Leffler m->m_pkthdr.rcvif->if_unit); 571c1d93b05SSam Leffler } 572c1d93b05SSam Leffler #endif 573c1d93b05SSam Leffler 574c1d93b05SSam Leffler /* 575c1d93b05SSam Leffler * Give bpf a chance at the packet. 576c1d93b05SSam Leffler */ 577c1d93b05SSam Leffler BPF_MTAP(ifp, m); 5782e2de7f2SArchie Cobbs 579afbe3a0fSPoul-Henning Kamp if (ifp->if_flags & IFF_MONITOR) { 580c1d93b05SSam Leffler /* 581c1d93b05SSam Leffler * Interface marked for monitoring; discard packet. 582c1d93b05SSam Leffler */ 583afbe3a0fSPoul-Henning Kamp m_freem(m); 584afbe3a0fSPoul-Henning Kamp return; 585afbe3a0fSPoul-Henning Kamp } 586afbe3a0fSPoul-Henning Kamp 587c1d93b05SSam Leffler /* If the CRC is still on the packet, trim it off. */ 588c1d93b05SSam Leffler if (m->m_flags & M_HASFCS) { 589c1d93b05SSam Leffler m_adj(m, -ETHER_CRC_LEN); 590c1d93b05SSam Leffler m->m_flags &= ~M_HASFCS; 591c1d93b05SSam Leffler } 592c1d93b05SSam Leffler 5932201e1b0SPoul-Henning Kamp #ifdef MAC 5942201e1b0SPoul-Henning Kamp mac_create_mbuf_from_ifnet(ifp, m); 5952201e1b0SPoul-Henning Kamp #endif 5962201e1b0SPoul-Henning Kamp 597c1d93b05SSam Leffler ifp->if_ibytes += m->m_pkthdr.len; 59805463bb5SDavid Greenman 599e1e1452dSArchie Cobbs /* Handle ng_ether(4) processing, if any */ 600e1e1452dSArchie Cobbs if (ng_ether_input_p != NULL) { 601c1d93b05SSam Leffler (*ng_ether_input_p)(ifp, &m); 602e1e1452dSArchie Cobbs if (m == NULL) 603e1e1452dSArchie Cobbs return; 604e1e1452dSArchie Cobbs } 605e1e1452dSArchie Cobbs 6062e2de7f2SArchie Cobbs /* Check for bridging mode */ 6077b109fa4SLuigi Rizzo if (BDG_ACTIVE(ifp) ) { 6082e2de7f2SArchie Cobbs struct ifnet *bif; 6092e2de7f2SArchie Cobbs 610c1d93b05SSam Leffler /* 611c1d93b05SSam Leffler * Check with bridging code to see how the packet 612c1d93b05SSam Leffler * should be handled. Possibilities are: 613c1d93b05SSam Leffler * 614c1d93b05SSam Leffler * BDG_BCAST broadcast 615c1d93b05SSam Leffler * BDG_MCAST multicast 616c1d93b05SSam Leffler * BDG_LOCAL for local address, don't forward 617c1d93b05SSam Leffler * BDG_DROP discard 618c1d93b05SSam Leffler * ifp forward only to specified interface(s) 619c1d93b05SSam Leffler * 620c1d93b05SSam Leffler * Non-local destinations are handled by passing the 621c1d93b05SSam Leffler * packet back to the bridge code. 622c1d93b05SSam Leffler */ 623c1d93b05SSam Leffler bif = bridge_in_ptr(ifp, eh); 624c1d93b05SSam Leffler if (bif == BDG_DROP) { /* discard packet */ 6252e2de7f2SArchie Cobbs m_freem(m); 6262e2de7f2SArchie Cobbs return; 6272e2de7f2SArchie Cobbs } 628c1d93b05SSam Leffler if (bif != BDG_LOCAL) { /* non-local, forward */ 629c1d93b05SSam Leffler m = bdg_forward_ptr(m, bif); 630ddacb30fSBosko Milekic /* 631c1d93b05SSam Leffler * The bridge may consume the packet if it's not 632c1d93b05SSam Leffler * supposed to be passed up or if a problem occurred 633c1d93b05SSam Leffler * while doing its job. This is reflected by it 634c1d93b05SSam Leffler * returning a NULL mbuf pointer. 635ddacb30fSBosko Milekic */ 636507b4b54SLuigi Rizzo if (m == NULL) { 637507b4b54SLuigi Rizzo if (bif == BDG_BCAST || bif == BDG_MCAST) 638c1d93b05SSam Leffler if_printf(ifp, 639c1d93b05SSam Leffler "bridge dropped %s packet\n", 640c1d93b05SSam Leffler bif == BDG_BCAST ? "broadcast" : 641c1d93b05SSam Leffler "multicast"); 642ddacb30fSBosko Milekic return; 643ddacb30fSBosko Milekic } 644c1d93b05SSam Leffler /* 645c1d93b05SSam Leffler * But in some cases the bridge may return the 646c1d93b05SSam Leffler * packet for us to free; sigh. 647c1d93b05SSam Leffler */ 648c1d93b05SSam Leffler if (bif != BDG_BCAST && bif != BDG_MCAST) { 649c1d93b05SSam Leffler printf("ether_input: drop bdg packet, bif %p\n", bif);/*XXX*/ 6502e2de7f2SArchie Cobbs m_freem(m); 6512e2de7f2SArchie Cobbs return; 6522e2de7f2SArchie Cobbs } 653c1d93b05SSam Leffler } 654c1d93b05SSam Leffler } 6552e2de7f2SArchie Cobbs 656c1d93b05SSam Leffler ether_demux(ifp, m); 657a6ddbff0SPoul-Henning Kamp /* First chunk of an mbuf contains good entropy */ 65810b1fde0SMark Murray if (harvest.ethernet) 65910b1fde0SMark Murray random_harvest(m, 16, 3, 0, RANDOM_NET); 660e1e1452dSArchie Cobbs } 661e1e1452dSArchie Cobbs 662e1e1452dSArchie Cobbs /* 663e1e1452dSArchie Cobbs * Upper layer processing for a received Ethernet packet. 664e1e1452dSArchie Cobbs */ 665e1e1452dSArchie Cobbs void 666c1d93b05SSam Leffler ether_demux(struct ifnet *ifp, struct mbuf *m) 667e1e1452dSArchie Cobbs { 668c1d93b05SSam Leffler struct ether_header *eh; 669e1e1452dSArchie Cobbs struct ifqueue *inq; 670e1e1452dSArchie Cobbs u_short ether_type; 671e1e1452dSArchie Cobbs #if defined(NETATALK) 672e1e1452dSArchie Cobbs register struct llc *l; 673e1e1452dSArchie Cobbs #endif 6744b984093SLuigi Rizzo struct ip_fw *rule = NULL; 6752b25acc1SLuigi Rizzo 6762b25acc1SLuigi Rizzo /* Extract info from dummynet tag, ignore others */ 6772b25acc1SLuigi Rizzo for (;m->m_type == MT_TAG; m = m->m_next) 6782b25acc1SLuigi Rizzo if (m->m_flags == PACKET_TAG_DUMMYNET) { 6792b25acc1SLuigi Rizzo rule = ((struct dn_pkt *)m)->rule; 6802b25acc1SLuigi Rizzo ifp = m->m_next->m_pkthdr.rcvif; 6814b984093SLuigi Rizzo } 6822b25acc1SLuigi Rizzo 683c1d93b05SSam Leffler KASSERT(ifp != NULL, ("ether_demux: NULL interface pointer")); 684c1d93b05SSam Leffler 685c1d93b05SSam Leffler eh = mtod(m, struct ether_header *); 686c1d93b05SSam Leffler 6872b25acc1SLuigi Rizzo if (rule) /* packet was already bridged */ 6882b25acc1SLuigi Rizzo goto post_stats; 6894b984093SLuigi Rizzo 690c6943100SPoul-Henning Kamp if (!(BDG_ACTIVE(ifp))) { 691c6943100SPoul-Henning Kamp /* 692c6943100SPoul-Henning Kamp * Discard packet if upper layers shouldn't see it because it 693c6943100SPoul-Henning Kamp * was unicast to a different Ethernet address. If the driver 694c6943100SPoul-Henning Kamp * is working properly, then this situation can only happen 695c6943100SPoul-Henning Kamp * when the interface is in promiscuous mode. 696c6943100SPoul-Henning Kamp */ 697cb24f323SArchie Cobbs if ((ifp->if_flags & IFF_PROMISC) != 0 698cb24f323SArchie Cobbs && (eh->ether_dhost[0] & 1) == 0 699cb24f323SArchie Cobbs && bcmp(eh->ether_dhost, 700ffb079beSMaxim Sobolev IFP2AC(ifp)->ac_enaddr, ETHER_ADDR_LEN) != 0 70125faf49dSMaxim Sobolev && (ifp->if_flags & IFF_PPROMISC) == 0) { 702cb24f323SArchie Cobbs m_freem(m); 703cb24f323SArchie Cobbs return; 704cb24f323SArchie Cobbs } 705c6943100SPoul-Henning Kamp } 706cb24f323SArchie Cobbs 7072e2de7f2SArchie Cobbs /* Discard packet if interface is not up */ 708df8bae1dSRodney W. Grimes if ((ifp->if_flags & IFF_UP) == 0) { 709df8bae1dSRodney W. Grimes m_freem(m); 710df8bae1dSRodney W. Grimes return; 711df8bae1dSRodney W. Grimes } 7122cc2df49SGarrett Wollman if (eh->ether_dhost[0] & 1) { 713df8bae1dSRodney W. Grimes if (bcmp((caddr_t)etherbroadcastaddr, (caddr_t)eh->ether_dhost, 714df8bae1dSRodney W. Grimes sizeof(etherbroadcastaddr)) == 0) 715df8bae1dSRodney W. Grimes m->m_flags |= M_BCAST; 7162cc2df49SGarrett Wollman else 717df8bae1dSRodney W. Grimes m->m_flags |= M_MCAST; 7182cc2df49SGarrett Wollman } 719df8bae1dSRodney W. Grimes if (m->m_flags & (M_BCAST|M_MCAST)) 720df8bae1dSRodney W. Grimes ifp->if_imcasts++; 721df8bae1dSRodney W. Grimes 7224b984093SLuigi Rizzo post_stats: 7234b984093SLuigi Rizzo if (IPFW_LOADED && ether_ipfw != 0) { 724c1d93b05SSam Leffler if (ether_ipfw_chk(&m, NULL, &rule, 0) == 0) { 7254b984093SLuigi Rizzo if (m) 7264b984093SLuigi Rizzo m_freem(m); 7274b984093SLuigi Rizzo return; 7284b984093SLuigi Rizzo } 7294b984093SLuigi Rizzo } 7304b984093SLuigi Rizzo 731c1d93b05SSam Leffler /* 732c1d93b05SSam Leffler * If VLANs are configured on the interface, check to 733c1d93b05SSam Leffler * see if the device performed the decapsulation and 734c1d93b05SSam Leffler * provided us with the tag. 735c1d93b05SSam Leffler */ 736c1d93b05SSam Leffler if (ifp->if_nvlans && 737c1d93b05SSam Leffler m_tag_locate(m, MTAG_VLAN, MTAG_VLAN_TAG, NULL) != NULL) { 738c1d93b05SSam Leffler /* 739c1d93b05SSam Leffler * vlan_input() will either recursively call ether_input() 740c1d93b05SSam Leffler * or drop the packet. 741c1d93b05SSam Leffler */ 742c1d93b05SSam Leffler KASSERT(vlan_input_p != NULL,("ether_input: VLAN not loaded!")); 743c1d93b05SSam Leffler (*vlan_input_p)(ifp, m); 744c1d93b05SSam Leffler return; 745c1d93b05SSam Leffler } 746c1d93b05SSam Leffler 747307d80beSDavid Greenman ether_type = ntohs(eh->ether_type); 748307d80beSDavid Greenman 749c1d93b05SSam Leffler /* 750c1d93b05SSam Leffler * Handle protocols that expect to have the Ethernet header 751c1d93b05SSam Leffler * (and possibly FCS) intact. 752c1d93b05SSam Leffler */ 753c1d93b05SSam Leffler switch (ether_type) { 754c1d93b05SSam Leffler case ETHERTYPE_VLAN: 755c1d93b05SSam Leffler if (ifp->if_nvlans != 0) { 756c1d93b05SSam Leffler KASSERT(vlan_input_p,("ether_input: VLAN not loaded!")); 757c1d93b05SSam Leffler (*vlan_input_p)(ifp, m); 758c1d93b05SSam Leffler } else { 759c1d93b05SSam Leffler ifp->if_noproto++; 760c1d93b05SSam Leffler m_freem(m); 761c1d93b05SSam Leffler } 762c1d93b05SSam Leffler return; 763c1d93b05SSam Leffler } 764c1d93b05SSam Leffler 765c1d93b05SSam Leffler /* Strip off Ethernet header. */ 766c1d93b05SSam Leffler m_adj(m, sizeof (struct ether_header)); 767c1d93b05SSam Leffler 768c1d93b05SSam Leffler /* If the CRC is still on the packet, trim it off. */ 769c1d93b05SSam Leffler if (m->m_flags & M_HASFCS) { 770c1d93b05SSam Leffler m_adj(m, -ETHER_CRC_LEN); 771c1d93b05SSam Leffler m->m_flags &= ~M_HASFCS; 772c1d93b05SSam Leffler } 773c1d93b05SSam Leffler 774307d80beSDavid Greenman switch (ether_type) { 775df8bae1dSRodney W. Grimes #ifdef INET 776df8bae1dSRodney W. Grimes case ETHERTYPE_IP: 7771f91d8c5SDavid Greenman if (ipflow_fastforward(m)) 7781f91d8c5SDavid Greenman return; 779df8bae1dSRodney W. Grimes schednetisr(NETISR_IP); 780df8bae1dSRodney W. Grimes inq = &ipintrq; 781df8bae1dSRodney W. Grimes break; 782df8bae1dSRodney W. Grimes 783df8bae1dSRodney W. Grimes case ETHERTYPE_ARP: 78408aadfbbSJonathan Lemon if (ifp->if_flags & IFF_NOARP) { 78508aadfbbSJonathan Lemon /* Discard packet if ARP is disabled on interface */ 78608aadfbbSJonathan Lemon m_freem(m); 78708aadfbbSJonathan Lemon return; 78808aadfbbSJonathan Lemon } 789df8bae1dSRodney W. Grimes schednetisr(NETISR_ARP); 790df8bae1dSRodney W. Grimes inq = &arpintrq; 791df8bae1dSRodney W. Grimes break; 792df8bae1dSRodney W. Grimes #endif 793cc6a66f2SJulian Elischer #ifdef IPX 794cc6a66f2SJulian Elischer case ETHERTYPE_IPX: 7954f93599fSBoris Popov if (ef_inputp && ef_inputp(ifp, eh, m) == 0) 7964f93599fSBoris Popov return; 797cc6a66f2SJulian Elischer schednetisr(NETISR_IPX); 798cc6a66f2SJulian Elischer inq = &ipxintrq; 799cc6a66f2SJulian Elischer break; 800cc6a66f2SJulian Elischer #endif 80182cd038dSYoshinobu Inoue #ifdef INET6 80282cd038dSYoshinobu Inoue case ETHERTYPE_IPV6: 80382cd038dSYoshinobu Inoue schednetisr(NETISR_IPV6); 80482cd038dSYoshinobu Inoue inq = &ip6intrq; 80582cd038dSYoshinobu Inoue break; 80682cd038dSYoshinobu Inoue #endif 807df8bae1dSRodney W. Grimes #ifdef NS 80888e038feSJordan K. Hubbard case 0x8137: /* Novell Ethernet_II Ethernet TYPE II */ 809df8bae1dSRodney W. Grimes schednetisr(NETISR_NS); 810df8bae1dSRodney W. Grimes inq = &nsintrq; 811df8bae1dSRodney W. Grimes break; 81288e038feSJordan K. Hubbard 81388e038feSJordan K. Hubbard #endif /* NS */ 814655929bfSJulian Elischer #ifdef NETATALK 815655929bfSJulian Elischer case ETHERTYPE_AT: 816655929bfSJulian Elischer schednetisr(NETISR_ATALK); 817655929bfSJulian Elischer inq = &atintrq1; 818655929bfSJulian Elischer break; 819655929bfSJulian Elischer case ETHERTYPE_AARP: 820655929bfSJulian Elischer /* probably this should be done with a NETISR as well */ 8214c8e8c05SJulian Elischer aarpinput(IFP2AC(ifp), m); /* XXX */ 822655929bfSJulian Elischer return; 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 */ 82988e038feSJordan K. Hubbard #ifdef NS 83088e038feSJordan K. Hubbard checksum = mtod(m, ushort *); 83188e038feSJordan K. Hubbard /* Novell 802.3 */ 83288e038feSJordan K. Hubbard if ((ether_type <= ETHERMTU) && 83388e038feSJordan K. Hubbard ((*checksum == 0xffff) || (*checksum == 0xE0E0))){ 83488e038feSJordan K. Hubbard if(*checksum == 0xE0E0) { 83588e038feSJordan K. Hubbard m->m_pkthdr.len -= 3; 83688e038feSJordan K. Hubbard m->m_len -= 3; 83788e038feSJordan K. Hubbard m->m_data += 3; 83888e038feSJordan K. Hubbard } 83988e038feSJordan K. Hubbard schednetisr(NETISR_NS); 84088e038feSJordan K. Hubbard inq = &nsintrq; 84188e038feSJordan K. Hubbard break; 84288e038feSJordan K. Hubbard } 84388e038feSJordan K. Hubbard #endif /* NS */ 844242c5536SPeter Wemm #if defined(NETATALK) 845307d80beSDavid Greenman if (ether_type > ETHERMTU) 846c1d93b05SSam Leffler goto discard; 847df8bae1dSRodney W. Grimes l = mtod(m, struct llc *); 848df8bae1dSRodney W. Grimes switch (l->llc_dsap) { 849655929bfSJulian Elischer case LLC_SNAP_LSAP: 850655929bfSJulian Elischer switch (l->llc_control) { 851655929bfSJulian Elischer case LLC_UI: 852655929bfSJulian Elischer if (l->llc_ssap != LLC_SNAP_LSAP) 853c1d93b05SSam Leffler goto discard; 854655929bfSJulian Elischer 855655929bfSJulian Elischer if (Bcmp(&(l->llc_snap_org_code)[0], at_org_code, 856655929bfSJulian Elischer sizeof(at_org_code)) == 0 && 857655929bfSJulian Elischer ntohs(l->llc_snap_ether_type) == ETHERTYPE_AT) { 858655929bfSJulian Elischer inq = &atintrq2; 859655929bfSJulian Elischer m_adj( m, sizeof( struct llc )); 860655929bfSJulian Elischer schednetisr(NETISR_ATALK); 861655929bfSJulian Elischer break; 862655929bfSJulian Elischer } 863655929bfSJulian Elischer 864655929bfSJulian Elischer if (Bcmp(&(l->llc_snap_org_code)[0], aarp_org_code, 865655929bfSJulian Elischer sizeof(aarp_org_code)) == 0 && 866655929bfSJulian Elischer ntohs(l->llc_snap_ether_type) == ETHERTYPE_AARP) { 867655929bfSJulian Elischer m_adj( m, sizeof( struct llc )); 8684c8e8c05SJulian Elischer aarpinput(IFP2AC(ifp), m); /* XXX */ 869655929bfSJulian Elischer return; 870655929bfSJulian Elischer } 871655929bfSJulian Elischer 872655929bfSJulian Elischer default: 873c1d93b05SSam Leffler goto discard; 874655929bfSJulian Elischer } 875655929bfSJulian Elischer break; 876df8bae1dSRodney W. Grimes default: 877c1d93b05SSam Leffler goto discard; 878df8bae1dSRodney W. Grimes } 879242c5536SPeter Wemm #else /* NETATALK */ 880c1d93b05SSam Leffler goto discard; 881242c5536SPeter Wemm #endif /* NETATALK */ 882df8bae1dSRodney W. Grimes } 883df8bae1dSRodney W. Grimes 884df5e1987SJonathan Lemon (void) IF_HANDOFF(inq, m, NULL); 885c1d93b05SSam Leffler return; 886c1d93b05SSam Leffler discard: 887c1d93b05SSam Leffler /* 888c1d93b05SSam Leffler * Packet is to be discarded. If netgraph is present, 889c1d93b05SSam Leffler * hand the packet to it for last chance processing; 890c1d93b05SSam Leffler * otherwise dispose of it. 891c1d93b05SSam Leffler */ 892c1d93b05SSam Leffler if (ng_ether_input_orphan_p != NULL) { 893c1d93b05SSam Leffler /* 894c1d93b05SSam Leffler * Put back the ethernet header so netgraph has a 895c1d93b05SSam Leffler * consistent view of inbound packets. 896c1d93b05SSam Leffler */ 897c1d93b05SSam Leffler M_PREPEND(m, sizeof (struct ether_header), M_NOWAIT); 898c1d93b05SSam Leffler (*ng_ether_input_orphan_p)(ifp, m); 899c1d93b05SSam Leffler return; 900c1d93b05SSam Leffler } 901c1d93b05SSam Leffler m_freem(m); 902c1d93b05SSam Leffler } 903c1d93b05SSam Leffler 904c1d93b05SSam Leffler /* 905c1d93b05SSam Leffler * Convert Ethernet address to printable (loggable) representation. 906c1d93b05SSam Leffler * This routine is for compatibility; it's better to just use 907c1d93b05SSam Leffler * 908c1d93b05SSam Leffler * printf("%6D", <pointer to address>, ":"); 909c1d93b05SSam Leffler * 910c1d93b05SSam Leffler * since there's no static buffer involved. 911c1d93b05SSam Leffler */ 912c1d93b05SSam Leffler char * 913c1d93b05SSam Leffler ether_sprintf(const u_char *ap) 914c1d93b05SSam Leffler { 915c1d93b05SSam Leffler static char etherbuf[18]; 916c1d93b05SSam Leffler snprintf(etherbuf, sizeof (etherbuf), "%6D", ap, ":"); 917c1d93b05SSam Leffler return (etherbuf); 918df8bae1dSRodney W. Grimes } 919df8bae1dSRodney W. Grimes 920df8bae1dSRodney W. Grimes /* 921df8bae1dSRodney W. Grimes * Perform common duties while attaching to interface list 922df8bae1dSRodney W. Grimes */ 923df8bae1dSRodney W. Grimes void 924c1d93b05SSam Leffler ether_ifattach(struct ifnet *ifp, const u_int8_t *llc) 925df8bae1dSRodney W. Grimes { 926df8bae1dSRodney W. Grimes register struct ifaddr *ifa; 927df8bae1dSRodney W. Grimes register struct sockaddr_dl *sdl; 928df8bae1dSRodney W. Grimes 929df8bae1dSRodney W. Grimes ifp->if_type = IFT_ETHER; 930c1d93b05SSam Leffler ifp->if_addrlen = ETHER_ADDR_LEN; 931c1d93b05SSam Leffler ifp->if_hdrlen = ETHER_HDR_LEN; 932cfeff1b6SJonathan Lemon if_attach(ifp); 933df8bae1dSRodney W. Grimes ifp->if_mtu = ETHERMTU; 934c1d93b05SSam Leffler ifp->if_output = ether_output; 935c1d93b05SSam Leffler ifp->if_input = ether_input; 9361158dfb7SGarrett Wollman ifp->if_resolvemulti = ether_resolvemulti; 937a330e1f1SGary Palmer if (ifp->if_baudrate == 0) 938c1d93b05SSam Leffler ifp->if_baudrate = IF_Mbps(10); /* just a default */ 939322dcb8dSMax Khon ifp->if_broadcastaddr = etherbroadcastaddr; 940c1d93b05SSam Leffler 941f9132cebSJonathan Lemon ifa = ifaddr_byindex(ifp->if_index); 9426e551fb6SDavid E. O'Brien KASSERT(ifa != NULL, ("%s: no lladdr!\n", __func__)); 94359562606SGarrett Wollman sdl = (struct sockaddr_dl *)ifa->ifa_addr; 944df8bae1dSRodney W. Grimes sdl->sdl_type = IFT_ETHER; 945df8bae1dSRodney W. Grimes sdl->sdl_alen = ifp->if_addrlen; 946c1d93b05SSam Leffler bcopy(llc, LLADDR(sdl), ifp->if_addrlen); 947c1d93b05SSam Leffler /* 948c1d93b05SSam Leffler * XXX: This doesn't belong here; we do it until 949c1d93b05SSam Leffler * XXX: all drivers are cleaned up 950c1d93b05SSam Leffler */ 951c1d93b05SSam Leffler if (llc != IFP2AC(ifp)->ac_enaddr) 952c1d93b05SSam Leffler bcopy(llc, IFP2AC(ifp)->ac_enaddr, ifp->if_addrlen); 953c1d93b05SSam Leffler 95421b8ebd9SArchie Cobbs bpfattach(ifp, DLT_EN10MB, sizeof(struct ether_header)); 955e1e1452dSArchie Cobbs if (ng_ether_attach_p != NULL) 956e1e1452dSArchie Cobbs (*ng_ether_attach_p)(ifp); 9577b109fa4SLuigi Rizzo if (BDG_LOADED) 958db69a05dSPaul Saab bdgtakeifaces_ptr(); 959e1e1452dSArchie Cobbs } 960e1e1452dSArchie Cobbs 96121b8ebd9SArchie Cobbs /* 96221b8ebd9SArchie Cobbs * Perform common duties while detaching an Ethernet interface 96321b8ebd9SArchie Cobbs */ 96421b8ebd9SArchie Cobbs void 965c1d93b05SSam Leffler ether_ifdetach(struct ifnet *ifp) 96621b8ebd9SArchie Cobbs { 96721b8ebd9SArchie Cobbs if (ng_ether_detach_p != NULL) 96821b8ebd9SArchie Cobbs (*ng_ether_detach_p)(ifp); 96921b8ebd9SArchie Cobbs bpfdetach(ifp); 97021b8ebd9SArchie Cobbs if_detach(ifp); 9717b109fa4SLuigi Rizzo if (BDG_LOADED) 972db69a05dSPaul Saab bdgtakeifaces_ptr(); 97321b8ebd9SArchie Cobbs } 97421b8ebd9SArchie Cobbs 975ce02431fSDoug Rabson SYSCTL_DECL(_net_link); 976602d513cSGarrett Wollman SYSCTL_NODE(_net_link, IFT_ETHER, ether, CTLFLAG_RW, 0, "Ethernet"); 9774b984093SLuigi Rizzo SYSCTL_INT(_net_link_ether, OID_AUTO, ipfw, CTLFLAG_RW, 9784b984093SLuigi Rizzo ðer_ipfw,0,"Pass ether pkts through firewall"); 97930106f6aSPoul-Henning Kamp 980fb583156SDavid Greenman int 981c5a1016bSBruce Evans ether_ioctl(ifp, command, data) 982c5a1016bSBruce Evans struct ifnet *ifp; 983c5a1016bSBruce Evans int command; 984c5a1016bSBruce Evans caddr_t data; 98530106f6aSPoul-Henning Kamp { 98630106f6aSPoul-Henning Kamp struct ifaddr *ifa = (struct ifaddr *) data; 98730106f6aSPoul-Henning Kamp struct ifreq *ifr = (struct ifreq *) data; 988fb583156SDavid Greenman int error = 0; 98930106f6aSPoul-Henning Kamp 99030106f6aSPoul-Henning Kamp switch (command) { 99130106f6aSPoul-Henning Kamp case SIOCSIFADDR: 99230106f6aSPoul-Henning Kamp ifp->if_flags |= IFF_UP; 99330106f6aSPoul-Henning Kamp 99430106f6aSPoul-Henning Kamp switch (ifa->ifa_addr->sa_family) { 99530106f6aSPoul-Henning Kamp #ifdef INET 99630106f6aSPoul-Henning Kamp case AF_INET: 99730106f6aSPoul-Henning Kamp ifp->if_init(ifp->if_softc); /* before arpwhohas */ 998322dcb8dSMax Khon arp_ifinit(ifp, ifa); 99930106f6aSPoul-Henning Kamp break; 100030106f6aSPoul-Henning Kamp #endif 100130106f6aSPoul-Henning Kamp #ifdef IPX 100230106f6aSPoul-Henning Kamp /* 100330106f6aSPoul-Henning Kamp * XXX - This code is probably wrong 100430106f6aSPoul-Henning Kamp */ 100530106f6aSPoul-Henning Kamp case AF_IPX: 100630106f6aSPoul-Henning Kamp { 100730106f6aSPoul-Henning Kamp register struct ipx_addr *ina = &(IA_SIPX(ifa)->sipx_addr); 10084c8e8c05SJulian Elischer struct arpcom *ac = IFP2AC(ifp); 100930106f6aSPoul-Henning Kamp 101030106f6aSPoul-Henning Kamp if (ipx_nullhost(*ina)) 101130106f6aSPoul-Henning Kamp ina->x_host = 101286101139SPoul-Henning Kamp *(union ipx_host *) 101386101139SPoul-Henning Kamp ac->ac_enaddr; 101430106f6aSPoul-Henning Kamp else { 101530106f6aSPoul-Henning Kamp bcopy((caddr_t) ina->x_host.c_host, 101686101139SPoul-Henning Kamp (caddr_t) ac->ac_enaddr, 101786101139SPoul-Henning Kamp sizeof(ac->ac_enaddr)); 101830106f6aSPoul-Henning Kamp } 101930106f6aSPoul-Henning Kamp 102030106f6aSPoul-Henning Kamp /* 102130106f6aSPoul-Henning Kamp * Set new address 102230106f6aSPoul-Henning Kamp */ 102330106f6aSPoul-Henning Kamp ifp->if_init(ifp->if_softc); 102430106f6aSPoul-Henning Kamp break; 102530106f6aSPoul-Henning Kamp } 102630106f6aSPoul-Henning Kamp #endif 102730106f6aSPoul-Henning Kamp #ifdef NS 102830106f6aSPoul-Henning Kamp /* 102930106f6aSPoul-Henning Kamp * XXX - This code is probably wrong 103030106f6aSPoul-Henning Kamp */ 103130106f6aSPoul-Henning Kamp case AF_NS: 103230106f6aSPoul-Henning Kamp { 103330106f6aSPoul-Henning Kamp register struct ns_addr *ina = &(IA_SNS(ifa)->sns_addr); 10344c8e8c05SJulian Elischer struct arpcom *ac = IFP2AC(ifp); 103530106f6aSPoul-Henning Kamp 103630106f6aSPoul-Henning Kamp if (ns_nullhost(*ina)) 103730106f6aSPoul-Henning Kamp ina->x_host = 103886101139SPoul-Henning Kamp *(union ns_host *) (ac->ac_enaddr); 103930106f6aSPoul-Henning Kamp else { 104030106f6aSPoul-Henning Kamp bcopy((caddr_t) ina->x_host.c_host, 104186101139SPoul-Henning Kamp (caddr_t) ac->ac_enaddr, 104286101139SPoul-Henning Kamp sizeof(ac->ac_enaddr)); 104330106f6aSPoul-Henning Kamp } 104430106f6aSPoul-Henning Kamp 104530106f6aSPoul-Henning Kamp /* 104630106f6aSPoul-Henning Kamp * Set new address 104730106f6aSPoul-Henning Kamp */ 104830106f6aSPoul-Henning Kamp ifp->if_init(ifp->if_softc); 104930106f6aSPoul-Henning Kamp break; 105030106f6aSPoul-Henning Kamp } 105130106f6aSPoul-Henning Kamp #endif 105230106f6aSPoul-Henning Kamp default: 105330106f6aSPoul-Henning Kamp ifp->if_init(ifp->if_softc); 105430106f6aSPoul-Henning Kamp break; 105530106f6aSPoul-Henning Kamp } 105630106f6aSPoul-Henning Kamp break; 105730106f6aSPoul-Henning Kamp 105830106f6aSPoul-Henning Kamp case SIOCGIFADDR: 105930106f6aSPoul-Henning Kamp { 106030106f6aSPoul-Henning Kamp struct sockaddr *sa; 106130106f6aSPoul-Henning Kamp 106230106f6aSPoul-Henning Kamp sa = (struct sockaddr *) & ifr->ifr_data; 10634c8e8c05SJulian Elischer bcopy(IFP2AC(ifp)->ac_enaddr, 106430106f6aSPoul-Henning Kamp (caddr_t) sa->sa_data, ETHER_ADDR_LEN); 106530106f6aSPoul-Henning Kamp } 106630106f6aSPoul-Henning Kamp break; 1067fb583156SDavid Greenman 1068fb583156SDavid Greenman case SIOCSIFMTU: 1069fb583156SDavid Greenman /* 1070fb583156SDavid Greenman * Set the interface MTU. 1071fb583156SDavid Greenman */ 1072fb583156SDavid Greenman if (ifr->ifr_mtu > ETHERMTU) { 1073fb583156SDavid Greenman error = EINVAL; 1074fb583156SDavid Greenman } else { 1075fb583156SDavid Greenman ifp->if_mtu = ifr->ifr_mtu; 107630106f6aSPoul-Henning Kamp } 1077fb583156SDavid Greenman break; 1078c1d93b05SSam Leffler default: 1079c1d93b05SSam Leffler error = EINVAL; /* XXX netbsd has ENOTTY??? */ 1080c1d93b05SSam Leffler break; 1081fb583156SDavid Greenman } 1082fb583156SDavid Greenman return (error); 108330106f6aSPoul-Henning Kamp } 10841158dfb7SGarrett Wollman 108537c84183SPoul-Henning Kamp static int 10861158dfb7SGarrett Wollman ether_resolvemulti(ifp, llsa, sa) 10871158dfb7SGarrett Wollman struct ifnet *ifp; 10881158dfb7SGarrett Wollman struct sockaddr **llsa; 10891158dfb7SGarrett Wollman struct sockaddr *sa; 10901158dfb7SGarrett Wollman { 10911158dfb7SGarrett Wollman struct sockaddr_dl *sdl; 10921158dfb7SGarrett Wollman struct sockaddr_in *sin; 109382cd038dSYoshinobu Inoue #ifdef INET6 109482cd038dSYoshinobu Inoue struct sockaddr_in6 *sin6; 109582cd038dSYoshinobu Inoue #endif 10961158dfb7SGarrett Wollman u_char *e_addr; 10971158dfb7SGarrett Wollman 10981158dfb7SGarrett Wollman switch(sa->sa_family) { 10991158dfb7SGarrett Wollman case AF_LINK: 11007f33a738SJulian Elischer /* 11017f33a738SJulian Elischer * No mapping needed. Just check that it's a valid MC address. 11027f33a738SJulian Elischer */ 11031158dfb7SGarrett Wollman sdl = (struct sockaddr_dl *)sa; 11041158dfb7SGarrett Wollman e_addr = LLADDR(sdl); 11051158dfb7SGarrett Wollman if ((e_addr[0] & 1) != 1) 11061158dfb7SGarrett Wollman return EADDRNOTAVAIL; 11071158dfb7SGarrett Wollman *llsa = 0; 11081158dfb7SGarrett Wollman return 0; 11091158dfb7SGarrett Wollman 11101158dfb7SGarrett Wollman #ifdef INET 11111158dfb7SGarrett Wollman case AF_INET: 11121158dfb7SGarrett Wollman sin = (struct sockaddr_in *)sa; 11131158dfb7SGarrett Wollman if (!IN_MULTICAST(ntohl(sin->sin_addr.s_addr))) 11141158dfb7SGarrett Wollman return EADDRNOTAVAIL; 11151158dfb7SGarrett Wollman MALLOC(sdl, struct sockaddr_dl *, sizeof *sdl, M_IFMADDR, 111626e30963SBill Fenner M_WAITOK|M_ZERO); 11171158dfb7SGarrett Wollman sdl->sdl_len = sizeof *sdl; 11181158dfb7SGarrett Wollman sdl->sdl_family = AF_LINK; 11191158dfb7SGarrett Wollman sdl->sdl_index = ifp->if_index; 11201158dfb7SGarrett Wollman sdl->sdl_type = IFT_ETHER; 11211158dfb7SGarrett Wollman sdl->sdl_alen = ETHER_ADDR_LEN; 11221158dfb7SGarrett Wollman e_addr = LLADDR(sdl); 11231158dfb7SGarrett Wollman ETHER_MAP_IP_MULTICAST(&sin->sin_addr, e_addr); 11241158dfb7SGarrett Wollman *llsa = (struct sockaddr *)sdl; 11251158dfb7SGarrett Wollman return 0; 11261158dfb7SGarrett Wollman #endif 112782cd038dSYoshinobu Inoue #ifdef INET6 112882cd038dSYoshinobu Inoue case AF_INET6: 112982cd038dSYoshinobu Inoue sin6 = (struct sockaddr_in6 *)sa; 1130595b8a1cSJun-ichiro itojun Hagino if (IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) { 1131595b8a1cSJun-ichiro itojun Hagino /* 1132595b8a1cSJun-ichiro itojun Hagino * An IP6 address of 0 means listen to all 1133595b8a1cSJun-ichiro itojun Hagino * of the Ethernet multicast address used for IP6. 1134595b8a1cSJun-ichiro itojun Hagino * (This is used for multicast routers.) 1135595b8a1cSJun-ichiro itojun Hagino */ 1136595b8a1cSJun-ichiro itojun Hagino ifp->if_flags |= IFF_ALLMULTI; 1137595b8a1cSJun-ichiro itojun Hagino *llsa = 0; 1138595b8a1cSJun-ichiro itojun Hagino return 0; 1139595b8a1cSJun-ichiro itojun Hagino } 114082cd038dSYoshinobu Inoue if (!IN6_IS_ADDR_MULTICAST(&sin6->sin6_addr)) 114182cd038dSYoshinobu Inoue return EADDRNOTAVAIL; 114282cd038dSYoshinobu Inoue MALLOC(sdl, struct sockaddr_dl *, sizeof *sdl, M_IFMADDR, 114326e30963SBill Fenner M_WAITOK|M_ZERO); 114482cd038dSYoshinobu Inoue sdl->sdl_len = sizeof *sdl; 114582cd038dSYoshinobu Inoue sdl->sdl_family = AF_LINK; 114682cd038dSYoshinobu Inoue sdl->sdl_index = ifp->if_index; 114782cd038dSYoshinobu Inoue sdl->sdl_type = IFT_ETHER; 114882cd038dSYoshinobu Inoue sdl->sdl_alen = ETHER_ADDR_LEN; 114982cd038dSYoshinobu Inoue e_addr = LLADDR(sdl); 115082cd038dSYoshinobu Inoue ETHER_MAP_IPV6_MULTICAST(&sin6->sin6_addr, e_addr); 115182cd038dSYoshinobu Inoue *llsa = (struct sockaddr *)sdl; 115282cd038dSYoshinobu Inoue return 0; 115382cd038dSYoshinobu Inoue #endif 11541158dfb7SGarrett Wollman 11551158dfb7SGarrett Wollman default: 11561158dfb7SGarrett Wollman /* 11571158dfb7SGarrett Wollman * Well, the text isn't quite right, but it's the name 11581158dfb7SGarrett Wollman * that counts... 11591158dfb7SGarrett Wollman */ 11601158dfb7SGarrett Wollman return EAFNOSUPPORT; 11611158dfb7SGarrett Wollman } 11621158dfb7SGarrett Wollman } 1163