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 */ 79