/* Copyright (C) 1996-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, see

   <http://www.gnu.org/licenses/>.  */

#ifndef __NETINET_IF_ETHER_H

#define __NETINET_IF_ETHER_H	1

#include <features.h>

#include <sys/types.h>

/* Get definitions from kernel header file.  */

#include <linux/if_ether.h>

#ifdef __USE_MISC

/*

 * Copyright (c) 1982, 1986, 1993

 *	The Regents of the University of California.  All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 * 4. Neither the name of the University nor the names of its contributors

 *    may be used to endorse or promote products derived from this software

 *    without specific prior written permission.

 *

 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND

 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE

 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE

 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL

 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS

 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)

 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT

 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY

 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF

 * SUCH DAMAGE.

 *

 *	@(#)if_ether.h	8.3 (Berkeley) 5/2/95

 *	$FreeBSD$

 */

#include <net/ethernet.h>

#include <net/if_arp.h>

__BEGIN_DECLS

/*

 * Ethernet Address Resolution Protocol.

 *

 * See RFC 826 for protocol description.  Structure below is adapted

 * to resolving internet addresses.  Field names used correspond to

 * RFC 826.

 */

struct	ether_arp {

	struct	arphdr ea_hdr;		/* fixed-size header */

	uint8_t arp_sha[ETH_ALEN];	/* sender hardware address */

	uint8_t arp_spa[4];		/* sender protocol address */

	uint8_t arp_tha[ETH_ALEN];	/* target hardware address */

	uint8_t arp_tpa[4];		/* target protocol address */

};

#define	arp_hrd	ea_hdr.ar_hrd

#define	arp_pro	ea_hdr.ar_pro

#define	arp_hln	ea_hdr.ar_hln

#define	arp_pln	ea_hdr.ar_pln

#define	arp_op	ea_hdr.ar_op

/*

 * Macro to map an IP multicast address to an Ethernet multicast address.

 * The high-order 25 bits of the Ethernet address are statically assigned,

 * and the low-order 23 bits are taken from the low end of the IP address.

 */

#define ETHER_MAP_IP_MULTICAST(ipaddr, enaddr) \

	/* struct in_addr *ipaddr; */ \

	/* uint8_t enaddr[ETH_ALEN]; */ \

{ \

	(enaddr)[0] = 0x01; \

	(enaddr)[1] = 0x00; \

	(enaddr)[2] = 0x5e; \

	(enaddr)[3] = ((uint8_t *)ipaddr)[1] & 0x7f; \

	(enaddr)[4] = ((uint8_t *)ipaddr)[2]; \

	(enaddr)[5] = ((uint8_t *)ipaddr)[3]; \

}

__END_DECLS

#endif /* __USE_MISC */

#endif /* netinet/if_ether.h */