1 /* $NetBSD: if_ether.h,v 1.34 2007/12/25 18:33:46 perry Exp $ */ 2 3 /* 4 * Copyright (c) 1982, 1986, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 * 31 * @(#)if_ether.h 8.3 (Berkeley) 5/2/95 32 */ 33 34 #ifndef _NETINET_IF_ETHER_H_ 35 #define _NETINET_IF_ETHER_H_ 36 37 #include <sys/cdefs.h> 38 #include <sys/types.h> 39 40 #if defined(__USE_BSD) 41 42 /* pull in Ethernet-specific definitions and packet structures */ 43 44 #include <linux/if_ether.h> 45 46 /* pull in ARP-specific definitions and packet structures */ 47 48 #include <net/if_arp.h> 49 50 #include <net/ethernet.h> 51 52 /* ... and define some more which we don't need anymore: */ 53 54 /* 55 * Ethernet Address Resolution Protocol. 56 * 57 * See RFC 826 for protocol description. Structure below is not 58 * used by our kernel!!! Only for userland programs which are externally 59 * maintained and need it. 60 */ 61 62 struct ether_arp { 63 struct arphdr ea_hdr; /* fixed-size header */ 64 u_int8_t arp_sha[ETHER_ADDR_LEN]; /* sender hardware address */ 65 u_int8_t arp_spa[4]; /* sender protocol address */ 66 u_int8_t arp_tha[ETHER_ADDR_LEN]; /* target hardware address */ 67 u_int8_t arp_tpa[4]; /* target protocol address */ 68 } __packed; 69 #define arp_hrd ea_hdr.ar_hrd 70 #define arp_pro ea_hdr.ar_pro 71 #define arp_hln ea_hdr.ar_hln 72 #define arp_pln ea_hdr.ar_pln 73 #define arp_op ea_hdr.ar_op 74 75 /* 76 * Macro to map an IP multicast address to an Ethernet multicast address. 77 * The high-order 25 bits of the Ethernet address are statically assigned, 78 * and the low-order 23 bits are taken from the low end of the IP address. 79 */ 80 #define ETHER_MAP_IP_MULTICAST(ipaddr, enaddr) \ 81 /* struct in_addr *ipaddr; */ \ 82 /* u_int8_t enaddr[ETHER_ADDR_LEN]; */ \ 83 { \ 84 (enaddr)[0] = 0x01; \ 85 (enaddr)[1] = 0x00; \ 86 (enaddr)[2] = 0x5e; \ 87 (enaddr)[3] = ((u_int8_t *)ipaddr)[1] & 0x7f; \ 88 (enaddr)[4] = ((u_int8_t *)ipaddr)[2]; \ 89 (enaddr)[5] = ((u_int8_t *)ipaddr)[3]; \ 90 } 91 /* 92 * Macro to map an IP6 multicast address to an Ethernet multicast address. 93 * The high-order 16 bits of the Ethernet address are statically assigned, 94 * and the low-order 32 bits are taken from the low end of the IP6 address. 95 */ 96 #define ETHER_MAP_IPV6_MULTICAST(ip6addr, enaddr) \ 97 /* struct in6_addr *ip6addr; */ \ 98 /* u_int8_t enaddr[ETHER_ADDR_LEN]; */ \ 99 { \ 100 (enaddr)[0] = 0x33; \ 101 (enaddr)[1] = 0x33; \ 102 (enaddr)[2] = ((u_int8_t *)ip6addr)[12]; \ 103 (enaddr)[3] = ((u_int8_t *)ip6addr)[13]; \ 104 (enaddr)[4] = ((u_int8_t *)ip6addr)[14]; \ 105 (enaddr)[5] = ((u_int8_t *)ip6addr)[15]; \ 106 } 107 108 #endif /* __USE_BSD */ 109 110 #endif /* !_NET_IF_ETHER_H_ */ 111
