1df8bae1dSRodney W. Grimes /* 2df8bae1dSRodney W. Grimes * Copyright (c) 1982, 1986, 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 * 33ef91e528SGarrett Wollman * @(#)if_ether.h 8.3 (Berkeley) 5/2/95 344963f4cdSGarrett Wollman * $Id: if_ether.h,v 1.15 1996/08/06 21:14:28 phk Exp $ 35df8bae1dSRodney W. Grimes */ 36df8bae1dSRodney W. Grimes 37707f139eSPaul Richards #ifndef _NETINET_IF_ETHER_H_ 38707f139eSPaul Richards #define _NETINET_IF_ETHER_H_ 39707f139eSPaul Richards 4026a8b0bfSPoul-Henning Kamp #include <net/ethernet.h> 414963f4cdSGarrett Wollman #include <net/if_arp.h> 425f6d32c7SBill Paul 43df8bae1dSRodney W. Grimes #define ETHERTYPE_PUP 0x0200 /* PUP protocol */ 44df8bae1dSRodney W. Grimes #define ETHERTYPE_IP 0x0800 /* IP protocol */ 45df8bae1dSRodney W. Grimes #define ETHERTYPE_ARP 0x0806 /* Addr. resolution protocol */ 46df8bae1dSRodney W. Grimes #define ETHERTYPE_REVARP 0x8035 /* reverse Addr. resolution protocol */ 47df8bae1dSRodney W. Grimes 48df8bae1dSRodney W. Grimes /* 49df8bae1dSRodney W. Grimes * The ETHERTYPE_NTRAILER packet types starting at ETHERTYPE_TRAIL have 50df8bae1dSRodney W. Grimes * (type-ETHERTYPE_TRAIL)*512 bytes of data followed 51df8bae1dSRodney W. Grimes * by an ETHER type (as given above) and then the (variable-length) header. 52df8bae1dSRodney W. Grimes */ 53df8bae1dSRodney W. Grimes #define ETHERTYPE_TRAIL 0x1000 /* Trailer packet */ 54df8bae1dSRodney W. Grimes #define ETHERTYPE_NTRAILER 16 55df8bae1dSRodney W. Grimes 5626a8b0bfSPoul-Henning Kamp #define ETHERMTU (ETHER_MAX_LEN-ETHER_HDR_LEN-ETHER_CRC_LEN) 5726a8b0bfSPoul-Henning Kamp #define ETHERMIN (ETHER_MIN_LEN-ETHER_HDR_LEN-ETHER_CRC_LEN) 58df8bae1dSRodney W. Grimes 59df8bae1dSRodney W. Grimes #ifdef KERNEL 60df8bae1dSRodney W. Grimes /* 61df8bae1dSRodney W. Grimes * Macro to map an IP multicast address to an Ethernet multicast address. 62df8bae1dSRodney W. Grimes * The high-order 25 bits of the Ethernet address are statically assigned, 63df8bae1dSRodney W. Grimes * and the low-order 23 bits are taken from the low end of the IP address. 64df8bae1dSRodney W. Grimes */ 65df8bae1dSRodney W. Grimes #define ETHER_MAP_IP_MULTICAST(ipaddr, enaddr) \ 66df8bae1dSRodney W. Grimes /* struct in_addr *ipaddr; */ \ 6726a8b0bfSPoul-Henning Kamp /* u_char enaddr[ETHER_ADDR_LEN]; */ \ 68df8bae1dSRodney W. Grimes { \ 69df8bae1dSRodney W. Grimes (enaddr)[0] = 0x01; \ 70df8bae1dSRodney W. Grimes (enaddr)[1] = 0x00; \ 71df8bae1dSRodney W. Grimes (enaddr)[2] = 0x5e; \ 72df8bae1dSRodney W. Grimes (enaddr)[3] = ((u_char *)ipaddr)[1] & 0x7f; \ 73df8bae1dSRodney W. Grimes (enaddr)[4] = ((u_char *)ipaddr)[2]; \ 74df8bae1dSRodney W. Grimes (enaddr)[5] = ((u_char *)ipaddr)[3]; \ 75df8bae1dSRodney W. Grimes } 76df8bae1dSRodney W. Grimes #endif 77df8bae1dSRodney W. Grimes 78df8bae1dSRodney W. Grimes /* 79df8bae1dSRodney W. Grimes * Ethernet Address Resolution Protocol. 80df8bae1dSRodney W. Grimes * 81df8bae1dSRodney W. Grimes * See RFC 826 for protocol description. Structure below is adapted 82df8bae1dSRodney W. Grimes * to resolving internet addresses. Field names used correspond to 83df8bae1dSRodney W. Grimes * RFC 826. 84df8bae1dSRodney W. Grimes */ 85df8bae1dSRodney W. Grimes struct ether_arp { 86df8bae1dSRodney W. Grimes struct arphdr ea_hdr; /* fixed-size header */ 8726a8b0bfSPoul-Henning Kamp u_char arp_sha[ETHER_ADDR_LEN]; /* sender hardware address */ 88df8bae1dSRodney W. Grimes u_char arp_spa[4]; /* sender protocol address */ 8926a8b0bfSPoul-Henning Kamp u_char arp_tha[ETHER_ADDR_LEN]; /* target hardware address */ 90df8bae1dSRodney W. Grimes u_char arp_tpa[4]; /* target protocol address */ 91df8bae1dSRodney W. Grimes }; 92df8bae1dSRodney W. Grimes #define arp_hrd ea_hdr.ar_hrd 93df8bae1dSRodney W. Grimes #define arp_pro ea_hdr.ar_pro 94df8bae1dSRodney W. Grimes #define arp_hln ea_hdr.ar_hln 95df8bae1dSRodney W. Grimes #define arp_pln ea_hdr.ar_pln 96df8bae1dSRodney W. Grimes #define arp_op ea_hdr.ar_op 97df8bae1dSRodney W. Grimes 98df8bae1dSRodney W. Grimes 99df8bae1dSRodney W. Grimes /* 100df8bae1dSRodney W. Grimes * Structure shared between the ethernet driver modules and 101df8bae1dSRodney W. Grimes * the address resolution code. For example, each ec_softc or il_softc 102df8bae1dSRodney W. Grimes * begins with this structure. 103df8bae1dSRodney W. Grimes */ 104df8bae1dSRodney W. Grimes struct arpcom { 1054a5f1499SDavid Greenman /* 1064a5f1499SDavid Greenman * The ifnet struct _must_ be at the head of this structure. 1074a5f1499SDavid Greenman */ 108df8bae1dSRodney W. Grimes struct ifnet ac_if; /* network-visible interface */ 10926a8b0bfSPoul-Henning Kamp u_char ac_enaddr[ETHER_ADDR_LEN]; /* ethernet hardware address */ 110df8bae1dSRodney W. Grimes struct ether_multi *ac_multiaddrs; /* list of ether multicast addrs */ 111df8bae1dSRodney W. Grimes int ac_multicnt; /* length of ac_multiaddrs list */ 112df8bae1dSRodney W. Grimes }; 113df8bae1dSRodney W. Grimes 114df8bae1dSRodney W. Grimes struct sockaddr_inarp { 115df8bae1dSRodney W. Grimes u_char sin_len; 116df8bae1dSRodney W. Grimes u_char sin_family; 117df8bae1dSRodney W. Grimes u_short sin_port; 118df8bae1dSRodney W. Grimes struct in_addr sin_addr; 119df8bae1dSRodney W. Grimes struct in_addr sin_srcaddr; 120df8bae1dSRodney W. Grimes u_short sin_tos; 121df8bae1dSRodney W. Grimes u_short sin_other; 122df8bae1dSRodney W. Grimes #define SIN_PROXY 1 123df8bae1dSRodney W. Grimes }; 124df8bae1dSRodney W. Grimes /* 125df8bae1dSRodney W. Grimes * IP and ethernet specific routing flags 126df8bae1dSRodney W. Grimes */ 127df8bae1dSRodney W. Grimes #define RTF_USETRAILERS RTF_PROTO1 /* use trailers */ 128df8bae1dSRodney W. Grimes #define RTF_ANNOUNCE RTF_PROTO2 /* announce new arp entry */ 129df8bae1dSRodney W. Grimes 130df8bae1dSRodney W. Grimes #ifdef KERNEL 13126a8b0bfSPoul-Henning Kamp extern u_char etherbroadcastaddr[ETHER_ADDR_LEN]; 13226a8b0bfSPoul-Henning Kamp extern u_char ether_ipmulticast_min[ETHER_ADDR_LEN]; 13326a8b0bfSPoul-Henning Kamp extern u_char ether_ipmulticast_max[ETHER_ADDR_LEN]; 134f23b4c91SGarrett Wollman extern struct ifqueue arpintrq; 135df8bae1dSRodney W. Grimes 1365df72964SGarrett Wollman int arpresolve __P((struct arpcom *, struct rtentry *, struct mbuf *, 1375df72964SGarrett Wollman struct sockaddr *, u_char *, struct rtentry *)); 138dd2e4102SGarrett Wollman void arp_ifinit __P((struct arpcom *, struct ifaddr *)); 139df8bae1dSRodney W. Grimes int ether_addmulti __P((struct ifreq *, struct arpcom *)); 140df8bae1dSRodney W. Grimes int ether_delmulti __P((struct ifreq *, struct arpcom *)); 141df8bae1dSRodney W. Grimes 142df8bae1dSRodney W. Grimes /* 143df8bae1dSRodney W. Grimes * Ethernet multicast address structure. There is one of these for each 144df8bae1dSRodney W. Grimes * multicast address or range of multicast addresses that we are supposed 145df8bae1dSRodney W. Grimes * to listen to on a particular interface. They are kept in a linked list, 146df8bae1dSRodney W. Grimes * rooted in the interface's arpcom structure. (This really has nothing to 147df8bae1dSRodney W. Grimes * do with ARP, or with the Internet address family, but this appears to be 148df8bae1dSRodney W. Grimes * the minimally-disrupting place to put it.) 149df8bae1dSRodney W. Grimes */ 150df8bae1dSRodney W. Grimes struct ether_multi { 15126a8b0bfSPoul-Henning Kamp u_char enm_addrlo[ETHER_ADDR_LEN]; /* low or only address of range */ 15226a8b0bfSPoul-Henning Kamp u_char enm_addrhi[ETHER_ADDR_LEN]; /* high or only address of range */ 153df8bae1dSRodney W. Grimes struct arpcom *enm_ac; /* back pointer to arpcom */ 154df8bae1dSRodney W. Grimes u_int enm_refcount; /* no. claims to this addr/range */ 155df8bae1dSRodney W. Grimes struct ether_multi *enm_next; /* ptr to next ether_multi */ 156df8bae1dSRodney W. Grimes }; 157df8bae1dSRodney W. Grimes 158df8bae1dSRodney W. Grimes /* 159df8bae1dSRodney W. Grimes * Structure used by macros below to remember position when stepping through 160df8bae1dSRodney W. Grimes * all of the ether_multi records. 161df8bae1dSRodney W. Grimes */ 162df8bae1dSRodney W. Grimes struct ether_multistep { 163df8bae1dSRodney W. Grimes struct ether_multi *e_enm; 164df8bae1dSRodney W. Grimes }; 165df8bae1dSRodney W. Grimes 166df8bae1dSRodney W. Grimes /* 167df8bae1dSRodney W. Grimes * Macro for looking up the ether_multi record for a given range of Ethernet 168df8bae1dSRodney W. Grimes * multicast addresses connected to a given arpcom structure. If no matching 169df8bae1dSRodney W. Grimes * record is found, "enm" returns NULL. 170df8bae1dSRodney W. Grimes */ 171df8bae1dSRodney W. Grimes #define ETHER_LOOKUP_MULTI(addrlo, addrhi, ac, enm) \ 17226a8b0bfSPoul-Henning Kamp /* u_char addrlo[ETHER_ADDR_LEN]; */ \ 17326a8b0bfSPoul-Henning Kamp /* u_char addrhi[ETHER_ADDR_LEN]; */ \ 174df8bae1dSRodney W. Grimes /* struct arpcom *ac; */ \ 175df8bae1dSRodney W. Grimes /* struct ether_multi *enm; */ \ 176df8bae1dSRodney W. Grimes { \ 177df8bae1dSRodney W. Grimes for ((enm) = (ac)->ac_multiaddrs; \ 178df8bae1dSRodney W. Grimes (enm) != NULL && \ 17926a8b0bfSPoul-Henning Kamp (bcmp((enm)->enm_addrlo, (addrlo), ETHER_ADDR_LEN) != 0 || \ 18026a8b0bfSPoul-Henning Kamp bcmp((enm)->enm_addrhi, (addrhi), ETHER_ADDR_LEN) != 0); \ 181df8bae1dSRodney W. Grimes (enm) = (enm)->enm_next); \ 182df8bae1dSRodney W. Grimes } 183df8bae1dSRodney W. Grimes 184df8bae1dSRodney W. Grimes /* 185df8bae1dSRodney W. Grimes * Macro to step through all of the ether_multi records, one at a time. 186df8bae1dSRodney W. Grimes * The current position is remembered in "step", which the caller must 187df8bae1dSRodney W. Grimes * provide. ETHER_FIRST_MULTI(), below, must be called to initialize "step" 188df8bae1dSRodney W. Grimes * and get the first record. Both macros return a NULL "enm" when there 189df8bae1dSRodney W. Grimes * are no remaining records. 190df8bae1dSRodney W. Grimes */ 191df8bae1dSRodney W. Grimes #define ETHER_NEXT_MULTI(step, enm) \ 192df8bae1dSRodney W. Grimes /* struct ether_multistep step; */ \ 193df8bae1dSRodney W. Grimes /* struct ether_multi *enm; */ \ 194df8bae1dSRodney W. Grimes { \ 195df8bae1dSRodney W. Grimes if (((enm) = (step).e_enm) != NULL) \ 196df8bae1dSRodney W. Grimes (step).e_enm = (enm)->enm_next; \ 197df8bae1dSRodney W. Grimes } 198df8bae1dSRodney W. Grimes 199df8bae1dSRodney W. Grimes #define ETHER_FIRST_MULTI(step, ac, enm) \ 200df8bae1dSRodney W. Grimes /* struct ether_multistep step; */ \ 201df8bae1dSRodney W. Grimes /* struct arpcom *ac; */ \ 202df8bae1dSRodney W. Grimes /* struct ether_multi *enm; */ \ 203df8bae1dSRodney W. Grimes { \ 204df8bae1dSRodney W. Grimes (step).e_enm = (ac)->ac_multiaddrs; \ 205df8bae1dSRodney W. Grimes ETHER_NEXT_MULTI((step), (enm)); \ 206df8bae1dSRodney W. Grimes } 207df8bae1dSRodney W. Grimes 208df8bae1dSRodney W. Grimes #endif 209707f139eSPaul Richards 210707f139eSPaul Richards #endif 211