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
44extern "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 */
67typedef 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 */
79