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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 tcp
  30.  *  @{
  31.  */
  32.  
  33. /** @file
  34.  *  TCP options definitions.
  35.  */
  36.  
  37. #ifndef __NET_TCP_CODES_H__
  38. #define __NET_TCP_CODES_H__
  39.  
  40. /** End of list TCP option.
  41.  */
  42. #define TCPOPT_END_OF_LIST              0x0
  43.  
  44. /** No operation TCP option.
  45.  */
  46. #define TCPOPT_NO_OPERATION             0x1
  47.  
  48. /** Maximum segment size TCP option.
  49.  */
  50. #define TCPOPT_MAX_SEGMENT_SIZE         0x2
  51.  
  52. /** Maximum segment size TCP option length.
  53.  */
  54. #define TCPOPT_MAX_SEGMENT_SIZE_LENGTH  4
  55.  
  56. /** Window scale TCP option.
  57.  */
  58. #define TCPOPT_WINDOW_SCALE             0x3
  59.  
  60. /** Window scale TCP option length.
  61.  */
  62. #define TCPOPT_WINDOW_SCALE_LENGTH      3
  63.  
  64. /** Selective acknowledgement permitted TCP option.
  65.  */
  66. #define TCPOPT_SACK_PERMITTED           0x4
  67.  
  68. /** Selective acknowledgement permitted TCP option length.
  69.  */
  70. #define TCPOPT_SACK_PERMITTED_LENGTH    2
  71.  
  72. /** Selective acknowledgement TCP option.
  73.  *  Has variable length.
  74.  */
  75. #define TCPOPT_SACK                     0x5
  76.  
  77. /** Timestamp TCP option.
  78.  */
  79. #define TCPOPT_TIMESTAMP                0x8
  80.  
  81. /** Timestamp TCP option length.
  82.  */
  83. #define TCPOPT_TIMESTAMP_LENGTH         10
  84.  
  85. #endif
  86.  
  87. /** @}
  88.  */
  89.