1*199767f8SToomas Soome /*- 2*199767f8SToomas Soome * Copyright (c) 1982, 1986, 1993 3*199767f8SToomas Soome * The Regents of the University of California. All rights reserved. 4*199767f8SToomas Soome * 5*199767f8SToomas Soome * Redistribution and use in source and binary forms, with or without 6*199767f8SToomas Soome * modification, are permitted provided that the following conditions 7*199767f8SToomas Soome * are met: 8*199767f8SToomas Soome * 1. Redistributions of source code must retain the above copyright 9*199767f8SToomas Soome * notice, this list of conditions and the following disclaimer. 10*199767f8SToomas Soome * 2. Redistributions in binary form must reproduce the above copyright 11*199767f8SToomas Soome * notice, this list of conditions and the following disclaimer in the 12*199767f8SToomas Soome * documentation and/or other materials provided with the distribution. 13*199767f8SToomas Soome * 4. Neither the name of the University nor the names of its contributors 14*199767f8SToomas Soome * may be used to endorse or promote products derived from this software 15*199767f8SToomas Soome * without specific prior written permission. 16*199767f8SToomas Soome * 17*199767f8SToomas Soome * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 18*199767f8SToomas Soome * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19*199767f8SToomas Soome * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20*199767f8SToomas Soome * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 21*199767f8SToomas Soome * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22*199767f8SToomas Soome * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23*199767f8SToomas Soome * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24*199767f8SToomas Soome * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25*199767f8SToomas Soome * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26*199767f8SToomas Soome * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27*199767f8SToomas Soome * SUCH DAMAGE. 28*199767f8SToomas Soome * 29*199767f8SToomas Soome * @(#)if_ether.h 8.3 (Berkeley) 5/2/95 30*199767f8SToomas Soome * $FreeBSD$ 31*199767f8SToomas Soome */ 32*199767f8SToomas Soome 33*199767f8SToomas Soome #ifndef _NETINET_IF_ETHER_H_ 34*199767f8SToomas Soome #define _NETINET_IF_ETHER_H_ 35*199767f8SToomas Soome 36*199767f8SToomas Soome #include <net/ethernet.h> 37*199767f8SToomas Soome #include <net/if_arp.h> 38*199767f8SToomas Soome 39*199767f8SToomas Soome /* 40*199767f8SToomas Soome * Macro to map an IP multicast address to an Ethernet multicast address. 41*199767f8SToomas Soome * The high-order 25 bits of the Ethernet address are statically assigned, 42*199767f8SToomas Soome * and the low-order 23 bits are taken from the low end of the IP address. 43*199767f8SToomas Soome */ 44*199767f8SToomas Soome #define ETHER_MAP_IP_MULTICAST(ipaddr, enaddr) \ 45*199767f8SToomas Soome /* struct in_addr *ipaddr; */ \ 46*199767f8SToomas Soome /* u_char enaddr[ETHER_ADDR_LEN]; */ \ 47*199767f8SToomas Soome { \ 48*199767f8SToomas Soome (enaddr)[0] = 0x01; \ 49*199767f8SToomas Soome (enaddr)[1] = 0x00; \ 50*199767f8SToomas Soome (enaddr)[2] = 0x5e; \ 51*199767f8SToomas Soome (enaddr)[3] = ((const u_char *)ipaddr)[1] & 0x7f; \ 52*199767f8SToomas Soome (enaddr)[4] = ((const u_char *)ipaddr)[2]; \ 53*199767f8SToomas Soome (enaddr)[5] = ((const u_char *)ipaddr)[3]; \ 54*199767f8SToomas Soome } 55*199767f8SToomas Soome /* 56*199767f8SToomas Soome * Macro to map an IP6 multicast address to an Ethernet multicast address. 57*199767f8SToomas Soome * The high-order 16 bits of the Ethernet address are statically assigned, 58*199767f8SToomas Soome * and the low-order 32 bits are taken from the low end of the IP6 address. 59*199767f8SToomas Soome */ 60*199767f8SToomas Soome #define ETHER_MAP_IPV6_MULTICAST(ip6addr, enaddr) \ 61*199767f8SToomas Soome /* struct in6_addr *ip6addr; */ \ 62*199767f8SToomas Soome /* u_char enaddr[ETHER_ADDR_LEN]; */ \ 63*199767f8SToomas Soome { \ 64*199767f8SToomas Soome (enaddr)[0] = 0x33; \ 65*199767f8SToomas Soome (enaddr)[1] = 0x33; \ 66*199767f8SToomas Soome (enaddr)[2] = ((const u_char *)ip6addr)[12]; \ 67*199767f8SToomas Soome (enaddr)[3] = ((const u_char *)ip6addr)[13]; \ 68*199767f8SToomas Soome (enaddr)[4] = ((const u_char *)ip6addr)[14]; \ 69*199767f8SToomas Soome (enaddr)[5] = ((const u_char *)ip6addr)[15]; \ 70*199767f8SToomas Soome } 71*199767f8SToomas Soome 72*199767f8SToomas Soome /* 73*199767f8SToomas Soome * Ethernet Address Resolution Protocol. 74*199767f8SToomas Soome * 75*199767f8SToomas Soome * See RFC 826 for protocol description. Structure below is adapted 76*199767f8SToomas Soome * to resolving internet addresses. Field names used correspond to 77*199767f8SToomas Soome * RFC 826. 78*199767f8SToomas Soome */ 79*199767f8SToomas Soome struct ether_arp { 80*199767f8SToomas Soome struct arphdr ea_hdr; /* fixed-size header */ 81*199767f8SToomas Soome u_char arp_sha[ETHER_ADDR_LEN]; /* sender hardware address */ 82*199767f8SToomas Soome u_char arp_spa[4]; /* sender protocol address */ 83*199767f8SToomas Soome u_char arp_tha[ETHER_ADDR_LEN]; /* target hardware address */ 84*199767f8SToomas Soome u_char arp_tpa[4]; /* target protocol address */ 85*199767f8SToomas Soome }; 86*199767f8SToomas Soome #define arp_hrd ea_hdr.ar_hrd 87*199767f8SToomas Soome #define arp_pro ea_hdr.ar_pro 88*199767f8SToomas Soome #define arp_hln ea_hdr.ar_hln 89*199767f8SToomas Soome #define arp_pln ea_hdr.ar_pln 90*199767f8SToomas Soome #define arp_op ea_hdr.ar_op 91*199767f8SToomas Soome 92*199767f8SToomas Soome #ifndef BURN_BRIDGES /* Can be used by third party software. */ 93*199767f8SToomas Soome struct sockaddr_inarp { 94*199767f8SToomas Soome u_char sin_len; 95*199767f8SToomas Soome u_char sin_family; 96*199767f8SToomas Soome u_short sin_port; 97*199767f8SToomas Soome struct in_addr sin_addr; 98*199767f8SToomas Soome struct in_addr sin_srcaddr; 99*199767f8SToomas Soome u_short sin_tos; 100*199767f8SToomas Soome u_short sin_other; 101*199767f8SToomas Soome #define SIN_PROXY 1 102*199767f8SToomas Soome }; 103*199767f8SToomas Soome #endif /* !BURN_BRIDGES */ 104*199767f8SToomas Soome 105*199767f8SToomas Soome /* 106*199767f8SToomas Soome * IP and ethernet specific routing flags 107*199767f8SToomas Soome */ 108*199767f8SToomas Soome #define RTF_USETRAILERS RTF_PROTO1 /* use trailers */ 109*199767f8SToomas Soome #define RTF_ANNOUNCE RTF_PROTO2 /* announce new arp entry */ 110*199767f8SToomas Soome 111*199767f8SToomas Soome #ifdef _KERNEL 112*199767f8SToomas Soome extern u_char ether_ipmulticast_min[ETHER_ADDR_LEN]; 113*199767f8SToomas Soome extern u_char ether_ipmulticast_max[ETHER_ADDR_LEN]; 114*199767f8SToomas Soome 115*199767f8SToomas Soome struct ifaddr; 116*199767f8SToomas Soome 117*199767f8SToomas Soome int arpresolve(struct ifnet *ifp, int is_gw, struct mbuf *m, 118*199767f8SToomas Soome const struct sockaddr *dst, u_char *desten, uint32_t *pflags); 119*199767f8SToomas Soome void arprequest(struct ifnet *, const struct in_addr *, 120*199767f8SToomas Soome const struct in_addr *, u_char *); 121*199767f8SToomas Soome void arp_ifinit(struct ifnet *, struct ifaddr *); 122*199767f8SToomas Soome void arp_ifinit2(struct ifnet *, struct ifaddr *, u_char *); 123*199767f8SToomas Soome #endif 124*199767f8SToomas Soome 125*199767f8SToomas Soome #endif 126