if_ether.h
1 /* 2 * Copyright (c) 2000-2011 Apple Inc. All rights reserved. 3 * 4 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5 * 6 * This file contains Original Code and/or Modifications of Original Code 7 * as defined in and that are subject to the Apple Public Source License 8 * Version 2.0 (the 'License'). You may not use this file except in 9 * compliance with the License. The rights granted to you under the License 10 * may not be used to create, or enable the creation or redistribution of, 11 * unlawful or unlicensed copies of an Apple operating system, or to 12 * circumvent, violate, or enable the circumvention or violation of, any 13 * terms of an Apple operating system software license agreement. 14 * 15 * Please obtain a copy of the License at 16 * http://www.opensource.apple.com/apsl/ and read it before using this file. 17 * 18 * The Original Code and all software distributed under the License are 19 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23 * Please see the License for the specific language governing rights and 24 * limitations under the License. 25 * 26 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27 */ 28 /* 29 * Copyright (c) 1982, 1986, 1993 30 * The Regents of the University of California. All rights reserved. 31 * 32 * Redistribution and use in source and binary forms, with or without 33 * modification, are permitted provided that the following conditions 34 * are met: 35 * 1. Redistributions of source code must retain the above copyright 36 * notice, this list of conditions and the following disclaimer. 37 * 2. Redistributions in binary form must reproduce the above copyright 38 * notice, this list of conditions and the following disclaimer in the 39 * documentation and/or other materials provided with the distribution. 40 * 3. All advertising materials mentioning features or use of this software 41 * must display the following acknowledgement: 42 * This product includes software developed by the University of 43 * California, Berkeley and its contributors. 44 * 4. Neither the name of the University nor the names of its contributors 45 * may be used to endorse or promote products derived from this software 46 * without specific prior written permission. 47 * 48 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 49 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 50 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 51 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 52 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 53 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 54 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 55 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 56 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 57 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 58 * SUCH DAMAGE. 59 * 60 * @(#)if_ether.h 8.3 (Berkeley) 5/2/95 61 * $FreeBSD: src/sys/netinet/if_ether.h,v 1.24 1999/12/29 04:40:58 peter Exp $ 62 */ 63 64 #ifndef _NETINET_IF_ETHER_H_ 65 #define _NETINET_IF_ETHER_H_ 66 #include <sys/appleapiopts.h> 67 68 #include <net/ethernet.h> 69 70 #include <netinet/in.h> 71 #include <net/if_arp.h> 72 #define ea_byte ether_addr_octet 73 74 /* 75 * Macro to map an IP multicast address to an Ethernet multicast address. 76 * The high-order 25 bits of the Ethernet address are statically assigned, 77 * and the low-order 23 bits are taken from the low end of the IP address. 78 */ 79 #define ETHER_MAP_IP_MULTICAST(ipaddr, enaddr) \ 80 /* struct in_addr *ipaddr; */ \ 81 /* u_char enaddr[ETHER_ADDR_LEN]; */ \ 82 { \ 83 (enaddr)[0] = 0x01; \ 84 (enaddr)[1] = 0x00; \ 85 (enaddr)[2] = 0x5e; \ 86 (enaddr)[3] = ((const u_char *)ipaddr)[1] & 0x7f; \ 87 (enaddr)[4] = ((const u_char *)ipaddr)[2]; \ 88 (enaddr)[5] = ((const u_char *)ipaddr)[3]; \ 89 } 90 /* 91 * Macro to map an IP6 multicast address to an Ethernet multicast address. 92 * The high-order 16 bits of the Ethernet address are statically assigned, 93 * and the low-order 32 bits are taken from the low end of the IP6 address. 94 */ 95 #define ETHER_MAP_IPV6_MULTICAST(ip6addr, enaddr) \ 96 /* struct in6_addr *ip6addr; */ \ 97 /* u_char enaddr[ETHER_ADDR_LEN]; */ \ 98 { \ 99 (enaddr)[0] = 0x33; \ 100 (enaddr)[1] = 0x33; \ 101 (enaddr)[2] = ((const u_char *)ip6addr)[12]; \ 102 (enaddr)[3] = ((const u_char *)ip6addr)[13]; \ 103 (enaddr)[4] = ((const u_char *)ip6addr)[14]; \ 104 (enaddr)[5] = ((const u_char *)ip6addr)[15]; \ 105 } 106 107 /* 108 * Ethernet Address Resolution Protocol. 109 * 110 * See RFC 826 for protocol description. Structure below is adapted 111 * to resolving internet addresses. Field names used correspond to 112 * RFC 826. 113 */ 114 struct ether_arp { 115 struct arphdr ea_hdr; /* fixed-size header */ 116 u_char arp_sha[ETHER_ADDR_LEN]; /* sender hardware address */ 117 u_char arp_spa[4]; /* sender protocol address */ 118 u_char arp_tha[ETHER_ADDR_LEN]; /* target hardware address */ 119 u_char arp_tpa[4]; /* target protocol address */ 120 }; 121 #define arp_hrd ea_hdr.ar_hrd 122 #define arp_pro ea_hdr.ar_pro 123 #define arp_hln ea_hdr.ar_hln 124 #define arp_pln ea_hdr.ar_pln 125 #define arp_op ea_hdr.ar_op 126 127 struct sockaddr_inarp { 128 u_char sin_len; 129 u_char sin_family; 130 u_short sin_port; 131 struct in_addr sin_addr; 132 struct in_addr sin_srcaddr; 133 u_short sin_tos; 134 u_short sin_other; 135 #define SIN_PROXY 0x1 136 #define SIN_ROUTER 0x2 137 }; 138 /* 139 * IP and ethernet specific routing flags 140 */ 141 #define RTF_USETRAILERS RTF_PROTO1 /* use trailers */ 142 #define RTF_ANNOUNCE RTF_PROTO2 /* announce new arp entry */ 143 144 #ifdef BSD_KERNEL_PRIVATE 145 extern u_char ether_ipmulticast_min[ETHER_ADDR_LEN]; 146 extern u_char ether_ipmulticast_max[ETHER_ADDR_LEN]; 147 extern struct ifqueue arpintrq; 148 149 int arpresolve(struct ifnet *, struct rtentry *, struct mbuf *, 150 struct sockaddr *, u_char *, struct rtentry *); 151 void arp_ifinit(struct ifnet *, struct ifaddr *); 152 #endif /* BSD_KERNEL_PRIVATE */ 153 154 #endif /* _NETINET_IF_ETHER_H_ */