1 /* Copyright (C) 1996-2021 Free Software Foundation, Inc. 2 This file is part of the GNU C Library. 3 4 The GNU C Library is free software; you can redistribute it and/or 5 modify it under the terms of the GNU Lesser General Public 6 License as published by the Free Software Foundation; either 7 version 2.1 of the License, or (at your option) any later version. 8 9 The GNU C Library is distributed in the hope that it will be useful, 10 but WITHOUT ANY WARRANTY; without even the implied warranty of 11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 12 Lesser General Public License for more details. 13 14 You should have received a copy of the GNU Lesser General Public 15 License along with the GNU C Library; if not, see 16 <https://www.gnu.org/licenses/>. */ 17 18 #ifndef __NETINET_IF_ETHER_H 19 20 #define __NETINET_IF_ETHER_H 1 21 #include <features.h> 22 #include <sys/types.h> 23 24 /* Get definitions from kernel header file. */ 25 #include <linux/if_ether.h> 26 27 #ifdef __USE_MISC 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 * 4. Neither the name of the University nor the names of its contributors 41 * may be used to endorse or promote products derived from this software 42 * without specific prior written permission. 43 * 44 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 45 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 46 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 47 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 48 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 49 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 50 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 51 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 52 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 53 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 54 * SUCH DAMAGE. 55 * 56 * @(#)if_ether.h 8.3 (Berkeley) 5/2/95 57 * $FreeBSD$ 58 */ 59 60 #include <net/ethernet.h> 61 #include <net/if_arp.h> 62 63 __BEGIN_DECLS 64 /* 65 * Ethernet Address Resolution Protocol. 66 * 67 * See RFC 826 for protocol description. Structure below is adapted 68 * to resolving internet addresses. Field names used correspond to 69 * RFC 826. 70 */ 71 struct ether_arp { 72 struct arphdr ea_hdr; /* fixed-size header */ 73 uint8_t arp_sha[ETH_ALEN]; /* sender hardware address */ 74 uint8_t arp_spa[4]; /* sender protocol address */ 75 uint8_t arp_tha[ETH_ALEN]; /* target hardware address */ 76 uint8_t arp_tpa[4]; /* target protocol address */ 77 }; 78 #define arp_hrd ea_hdr.ar_hrd 79 #define arp_pro ea_hdr.ar_pro 80 #define arp_hln ea_hdr.ar_hln 81 #define arp_pln ea_hdr.ar_pln 82 #define arp_op ea_hdr.ar_op 83 84 /* 85 * Macro to map an IP multicast address to an Ethernet multicast address. 86 * The high-order 25 bits of the Ethernet address are statically assigned, 87 * and the low-order 23 bits are taken from the low end of the IP address. 88 */ 89 #define ETHER_MAP_IP_MULTICAST(ipaddr, enaddr) \ 90 /* struct in_addr *ipaddr; */ \ 91 /* uint8_t enaddr[ETH_ALEN]; */ \ 92 { \ 93 (enaddr)[0] = 0x01; \ 94 (enaddr)[1] = 0x00; \ 95 (enaddr)[2] = 0x5e; \ 96 (enaddr)[3] = ((uint8_t *)ipaddr)[1] & 0x7f; \ 97 (enaddr)[4] = ((uint8_t *)ipaddr)[2]; \ 98 (enaddr)[5] = ((uint8_t *)ipaddr)[3]; \ 99 } 100 101 __END_DECLS 102 #endif /* __USE_MISC */ 103 104 #endif /* netinet/if_ether.h */ 105