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  1. /*
  2.  * Copyright (c) 2009 Lukas Mejdrech
  3.  * All rights reserved.
  4.  *
  5.  * Redistribution and use in source and binary forms, with or without
  6.  * modification, are permitted provided that the following conditions
  7.  * are met:
  8.  *
  9.  * - Redistributions of source code must retain the above copyright
  10.  *   notice, this list of conditions and the following disclaimer.
  11.  * - Redistributions in binary form must reproduce the above copyright
  12.  *   notice, this list of conditions and the following disclaimer in the
  13.  *   documentation and/or other materials provided with the distribution.
  14.  * - The name of the author may not be used to endorse or promote products
  15.  *   derived from this software without specific prior written permission.
  16.  *
  17.  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18.  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19.  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20.  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21.  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22.  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23.  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24.  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25.  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26.  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27.  */
  28.  
  29. /** @addtogroup arp
  30.  *  @{
  31.  */
  32.  
  33. /** @file
  34.  *  ARP protocol header.
  35.  */
  36.  
  37. #ifndef __NET_ARP_HEADER_H__
  38. #define __NET_ARP_HEADER_H__
  39.  
  40. #include <sys/types.h>
  41.  
  42. /** Type definition of an ARP protocol header.
  43.  *  @see arp_header
  44.  */
  45. typedef struct arp_header   arp_header_t;
  46.  
  47. /** Type definition of an ARP protocol header pointer.
  48.  *  @see arp_header
  49.  */
  50. typedef arp_header_t *      arp_header_ref;
  51.  
  52. /** ARP protocol header.
  53.  */
  54. struct arp_header{
  55.     /** Hardware type identifier.
  56.      *  @see hardware.h
  57.      */
  58.     uint16_t    hardware;
  59.     /** Protocol identifier.
  60.      */
  61.     uint16_t    protocol;
  62.     /** Hardware address length in bytes.
  63.      */
  64.     uint8_t     hardware_length;
  65.     /** Protocol address length in bytes.
  66.      */
  67.     uint8_t     protocol_length;
  68.     /** ARP packet type.
  69.      *  @see arp_oc.h
  70.      */
  71.     uint16_t    operation;
  72. } __attribute__ ((packed));
  73.  
  74. #endif
  75.  
  76. /** @}
  77.  */
  78.