minix/lib/liblwip/dist/src/include/lwip/prot/autoip.h

   1 /**
   2  * @file
   3  * AutoIP protocol definitions
   4  */
   5
   6 /*
   7  *
   8  * Copyright (c) 2007 Dominik Spies <kontakt@dspies.de>
   9  * All rights reserved.
  10  *
  11  * Redistribution and use in source and binary forms, with or without modification,
  12  * are permitted provided that the following conditions are met:
  13  *
  14  * 1. Redistributions of source code must retain the above copyright notice,
  15  *    this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright notice,
  17  *    this list of conditions and the following disclaimer in the documentation
  18  *    and/or other materials provided with the distribution.
  19  * 3. The name of the author may not be used to endorse or promote products
  20  *    derived from this software without specific prior written permission.
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
  23  * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
  24  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
  25  * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  26  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
  27  * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  28  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  29  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
  30  * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
  31  * OF SUCH DAMAGE.
  32  *
  33  * Author: Dominik Spies <kontakt@dspies.de>
  34  *
  35  * This is a AutoIP implementation for the lwIP TCP/IP stack. It aims to conform
  36  * with RFC 3927.
  37  *
  38  */
  39
  40 #ifndef LWIP_HDR_PROT_AUTOIP_H
  41 #define LWIP_HDR_PROT_AUTOIP_H
  42
  43 #ifdef __cplusplus
  44 extern "C" {
  45 #endif
  46
  47 /* 169.254.0.0 */
  48 #define AUTOIP_NET              0xA9FE0000
  49 /* 169.254.1.0 */
  50 #define AUTOIP_RANGE_START      (AUTOIP_NET | 0x0100)
  51 /* 169.254.254.255 */
  52 #define AUTOIP_RANGE_END        (AUTOIP_NET | 0xFEFF)
  53
  54 /* RFC 3927 Constants */
  55 #define PROBE_WAIT              1   /* second   (initial random delay)                 */
  56 #define PROBE_MIN               1   /* second   (minimum delay till repeated probe)    */
  57 #define PROBE_MAX               2   /* seconds  (maximum delay till repeated probe)    */
  58 #define PROBE_NUM               3   /*          (number of probe packets)              */
  59 #define ANNOUNCE_NUM            2   /*          (number of announcement packets)       */
  60 #define ANNOUNCE_INTERVAL       2   /* seconds  (time between announcement packets)    */
  61 #define ANNOUNCE_WAIT           2   /* seconds  (delay before announcing)              */
  62 #define MAX_CONFLICTS           10  /*          (max conflicts before rate limiting)   */
  63 #define RATE_LIMIT_INTERVAL     60  /* seconds  (delay between successive attempts)    */
  64 #define DEFEND_INTERVAL         10  /* seconds  (min. wait between defensive ARPs)     */
  65
  66 /* AutoIP client states */
  67 typedef enum {
  68   AUTOIP_STATE_OFF        = 0,
  69   AUTOIP_STATE_PROBING    = 1,
  70   AUTOIP_STATE_ANNOUNCING = 2,
  71   AUTOIP_STATE_BOUND      = 3
  72 } autoip_state_enum_t;
  73
  74 #ifdef __cplusplus
  75 }
  76 #endif
  77
  78 #endif /* LWIP_HDR_PROT_AUTOIP_H */