| 1 | /* Copyright (C) 1996-2022 Free Software Foundation, Inc. |
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| 2 | This file is part of the GNU C Library. |
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| 3 | |
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| 4 | The GNU C Library is free software; you can redistribute it and/or |
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| 5 | modify it under the terms of the GNU Lesser General Public |
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| 6 | License as published by the Free Software Foundation; either |
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| 7 | version 2.1 of the License, or (at your option) any later version. |
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| 8 | |
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| 9 | The GNU C Library is distributed in the hope that it will be useful, |
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| 10 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 12 | Lesser General Public License for more details. |
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| 13 | |
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| 14 | You should have received a copy of the GNU Lesser General Public |
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| 15 | License along with the GNU C Library; if not, see |
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| 16 | <https://www.gnu.org/licenses/>. */ |
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| 17 | |
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| 18 | #ifndef __NETINET_IF_ETHER_H |
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| 19 | |
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| 20 | #define __NETINET_IF_ETHER_H 1 |
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| 21 | #include <features.h> |
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| 22 | #include <sys/types.h> |
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| 23 | |
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| 24 | /* Get definitions from kernel header file. */ |
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| 25 | #include <linux/if_ether.h> |
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| 26 | |
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| 27 | #ifdef __USE_MISC |
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| 28 | /* |
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| 29 | * Copyright (c) 1982, 1986, 1993 |
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| 30 | * The Regents of the University of California. All rights reserved. |
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| 31 | * |
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| 32 | * Redistribution and use in source and binary forms, with or without |
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| 33 | * modification, are permitted provided that the following conditions |
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| 34 | * are met: |
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| 35 | * 1. Redistributions of source code must retain the above copyright |
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| 36 | * notice, this list of conditions and the following disclaimer. |
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| 37 | * 2. Redistributions in binary form must reproduce the above copyright |
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| 38 | * notice, this list of conditions and the following disclaimer in the |
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| 39 | * documentation and/or other materials provided with the distribution. |
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| 40 | * 4. Neither the name of the University nor the names of its contributors |
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| 41 | * may be used to endorse or promote products derived from this software |
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| 42 | * without specific prior written permission. |
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| 43 | * |
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| 44 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
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| 45 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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| 46 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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| 47 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
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| 48 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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| 49 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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| 50 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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| 51 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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| 52 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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| 53 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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| 54 | * SUCH DAMAGE. |
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| 55 | * |
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| 56 | * @(#)if_ether.h 8.3 (Berkeley) 5/2/95 |
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| 57 | * $FreeBSD$ |
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| 58 | */ |
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| 59 | |
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| 60 | #include <net/ethernet.h> |
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| 61 | #include <net/if_arp.h> |
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| 62 | |
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| 63 | __BEGIN_DECLS |
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| 64 | /* |
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| 65 | * Ethernet Address Resolution Protocol. |
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| 66 | * |
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| 67 | * See RFC 826 for protocol description. Structure below is adapted |
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| 68 | * to resolving internet addresses. Field names used correspond to |
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| 69 | * RFC 826. |
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| 70 | */ |
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| 71 | struct ether_arp { |
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| 72 | struct arphdr ea_hdr; /* fixed-size header */ |
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| 73 | uint8_t arp_sha[ETH_ALEN]; /* sender hardware address */ |
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| 74 | uint8_t arp_spa[4]; /* sender protocol address */ |
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| 75 | uint8_t arp_tha[ETH_ALEN]; /* target hardware address */ |
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| 76 | uint8_t arp_tpa[4]; /* target protocol address */ |
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| 77 | }; |
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| 78 | #define arp_hrd ea_hdr.ar_hrd |
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| 79 | #define arp_pro ea_hdr.ar_pro |
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| 80 | #define arp_hln ea_hdr.ar_hln |
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| 81 | #define arp_pln ea_hdr.ar_pln |
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| 82 | #define arp_op ea_hdr.ar_op |
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| 83 | |
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| 84 | /* |
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| 85 | * Macro to map an IP multicast address to an Ethernet multicast address. |
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| 86 | * The high-order 25 bits of the Ethernet address are statically assigned, |
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| 87 | * and the low-order 23 bits are taken from the low end of the IP address. |
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| 88 | */ |
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| 89 | #define ETHER_MAP_IP_MULTICAST(ipaddr, enaddr) \ |
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| 90 | /* struct in_addr *ipaddr; */ \ |
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| 91 | /* uint8_t enaddr[ETH_ALEN]; */ \ |
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| 92 | { \ |
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| 93 | (enaddr)[0] = 0x01; \ |
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| 94 | (enaddr)[1] = 0x00; \ |
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| 95 | (enaddr)[2] = 0x5e; \ |
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| 96 | (enaddr)[3] = ((uint8_t *)ipaddr)[1] & 0x7f; \ |
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| 97 | (enaddr)[4] = ((uint8_t *)ipaddr)[2]; \ |
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| 98 | (enaddr)[5] = ((uint8_t *)ipaddr)[3]; \ |
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| 99 | } |
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| 100 | |
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| 101 | __END_DECLS |
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| 102 | #endif /* __USE_MISC */ |
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| 103 | |
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| 104 | #endif /* netinet/if_ether.h */ |
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| 105 | |
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