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001: /* Copyright (C) 1996, 1997, 1999 Free Software Foundation, Inc.
002:    This file is part of the GNU C Library.
003: 
004:    The GNU C Library is free software; you can redistribute it and/or
005:    modify it under the terms of the GNU Lesser General Public
006:    License as published by the Free Software Foundation; either
007:    version 2.1 of the License, or (at your option) any later version.
008: 
009:    The GNU C Library is distributed in the hope that it will be useful,
010:    but WITHOUT ANY WARRANTY; without even the implied warranty of
011:    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
012:    Lesser General Public License for more details.
013: 
014:    You should have received a copy of the GNU Lesser General Public
015:    License along with the GNU C Library; if not, write to the Free
016:    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
017:    02111-1307 USA.  */
018: 
019: #ifndef __NETINET_IF_ETHER_H
020: 
021: #define __NETINET_IF_ETHER_H    1
022: #include <features.h>
023: #include <sys/types.h>
024: 
025: /* Get definitions from kernel header file.  */
026: #include <linux/if_ether.h>
027: 
028: #ifdef __USE_BSD
029: /*
030:  * Copyright (c) 1982, 1986, 1993
031:  *      The Regents of the University of California.  All rights reserved.
032:  *
033:  * Redistribution and use in source and binary forms, with or without
034:  * modification, are permitted provided that the following conditions
035:  * are met:
036:  * 1. Redistributions of source code must retain the above copyright
037:  *    notice, this list of conditions and the following disclaimer.
038:  * 2. Redistributions in binary form must reproduce the above copyright
039:  *    notice, this list of conditions and the following disclaimer in the
040:  *    documentation and/or other materials provided with the distribution.
041:  * 4. Neither the name of the University nor the names of its contributors
042:  *    may be used to endorse or promote products derived from this software
043:  *    without specific prior written permission.
044:  *
045:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
046:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
047:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
048:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
049:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
050:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
051:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
052:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
053:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
054:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
055:  * SUCH DAMAGE.
056:  *
057:  *      @(#)if_ether.h  8.3 (Berkeley) 5/2/95
058:  *      $FreeBSD$
059:  */
060: 
061: #include <net/ethernet.h>
062: #include <net/if_arp.h>
063: 
064: __BEGIN_DECLS
065: /*
066:  * Ethernet Address Resolution Protocol.
067:  *
068:  * See RFC 826 for protocol description.  Structure below is adapted
069:  * to resolving internet addresses.  Field names used correspond to
070:  * RFC 826.
071:  */
072: struct  ether_arp {
073:         struct  arphdr ea_hdr;          /* fixed-size header */
074:         u_int8_t arp_sha[ETH_ALEN];     /* sender hardware address */
075:         u_int8_t arp_spa[4];            /* sender protocol address */
076:         u_int8_t arp_tha[ETH_ALEN];     /* target hardware address */
077:         u_int8_t arp_tpa[4];            /* target protocol address */
078: };
079: #define arp_hrd ea_hdr.ar_hrd
080: #define arp_pro ea_hdr.ar_pro
081: #define arp_hln ea_hdr.ar_hln
082: #define arp_pln ea_hdr.ar_pln
083: #define arp_op  ea_hdr.ar_op
084: 
085: /*
086:  * Macro to map an IP multicast address to an Ethernet multicast address.
087:  * The high-order 25 bits of the Ethernet address are statically assigned,
088:  * and the low-order 23 bits are taken from the low end of the IP address.
089:  */
090: #define ETHER_MAP_IP_MULTICAST(ipaddr, enaddr) \
091:         /* struct in_addr *ipaddr; */ \
092:         /* u_char enaddr[ETH_ALEN];        */ \
093: { \
094:         (enaddr)[0] = 0x01; \
095:         (enaddr)[1] = 0x00; \
096:         (enaddr)[2] = 0x5e; \
097:         (enaddr)[3] = ((u_int8_t *)ipaddr)[1] & 0x7f; \
098:         (enaddr)[4] = ((u_int8_t *)ipaddr)[2]; \
099:         (enaddr)[5] = ((u_int8_t *)ipaddr)[3]; \
100: }
101: 
102: __END_DECLS
103: #endif /* __USE_BSD */
104: 
105: #endif /* netinet/if_ether.h */
106: 

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