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/*
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 * Copyright (c) 2009 Lukas Mejdrech
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 * All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 *
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 * - Redistributions of source code must retain the above copyright
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 *   notice, this list of conditions and the following disclaimer.
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 * - Redistributions in binary form must reproduce the above copyright
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 *   notice, this list of conditions and the following disclaimer in the
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 *   documentation and/or other materials provided with the distribution.
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 * - The name of the author may not be used to endorse or promote products
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 *   derived from this software without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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/** @addtogroup arp
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 *  @{
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 */
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/** @file
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 *  ARP protocol header.
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 */
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#ifndef __NET_ARP_HEADER_H__
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#define __NET_ARP_HEADER_H__
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#include <sys/types.h>
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/** Type definition of an ARP protocol header.
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 *  @see arp_header
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 */
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typedef struct arp_header   arp_header_t;
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/** Type definition of an ARP protocol header pointer.
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 *  @see arp_header
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 */
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typedef arp_header_t *      arp_header_ref;
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/** ARP protocol header.
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 */
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struct arp_header{
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    /** Hardware type identifier.
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     *  @see hardware.h
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     */
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    uint16_t    hardware;
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    /** Protocol identifier.
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     */
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    uint16_t    protocol;
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    /** Hardware address length in bytes.
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     */
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    uint8_t     hardware_length;
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    /** Protocol address length in bytes.
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     */
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    uint8_t     protocol_length;
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    /** ARP packet type.
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     *  @see arp_oc.h
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     */
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    uint16_t    operation;
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} __attribute__ ((packed));
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#endif
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/** @}
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 */