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  1. /*
  2.  * Copyright (c) 2008 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 net
  30.  *  @{
  31.  */
  32.  
  33. /** @file
  34.  */
  35.  
  36. #ifndef __NET_PACKET_HEADER_H__
  37. #define __NET_PACKET_HEADER_H__
  38.  
  39. #include <ipc/services.h>
  40.  
  41. #include "packet.h"
  42.  
  43. #define PACKET_MAGIC_VALUE  0x11227788
  44.  
  45. struct packet{
  46.     packet_id_t     packet_id;
  47.     services_t      owner;
  48.     packet_mode_t   mode;
  49.     int             order;
  50.     size_t          metric;
  51.     packet_id_t     previous;
  52.     packet_id_t     next;
  53.     size_t          length;
  54.     size_t          addr_len;
  55.     size_t          src_addr;
  56.     size_t          dest_addr;
  57.     size_t          max_prefix;
  58.     size_t          max_content;
  59.     size_t          data_start;
  60.     size_t          data_end;
  61.     int             magic_value;
  62. };
  63.  
  64. static inline int   packet_is_valid( const packet_t packet ){
  65.     return packet && ( packet->magic_value == PACKET_MAGIC_VALUE );
  66. }
  67.  
  68. #endif
  69.  
  70. /** @}
  71.  */
  72.