Rod Coleman / lwip-mbed-2010

Port of LwIP performed by Ralf in 2010. Not recommended for use with recent mbed libraries, but good demos of raw LwIP possible

Dependents:   LwIP_raw_API_serverExample tiny-dtls

Core/lwIP/include/ipv4/lwip/autoip.h@0:0791c1fece8e, 2012-09-18 (annotated)

Committer:
RodColeman
Date:
Tue Sep 18 14:41:24 2012 +0000
Revision:
0:0791c1fece8e
[mbed] converted /Eth_TCP_Wei_Server/lwip

Who changed what in which revision?

UserRevisionLine numberNew contents of line
RodColeman 0:0791c1fece8e 1 /**
RodColeman 0:0791c1fece8e 2 * @file
RodColeman 0:0791c1fece8e 3 *
RodColeman 0:0791c1fece8e 4 * AutoIP Automatic LinkLocal IP Configuration
RodColeman 0:0791c1fece8e 5 */
RodColeman 0:0791c1fece8e 6
RodColeman 0:0791c1fece8e 7 /*
RodColeman 0:0791c1fece8e 8 *
RodColeman 0:0791c1fece8e 9 * Copyright (c) 2007 Dominik Spies <kontakt@dspies.de>
RodColeman 0:0791c1fece8e 10 * All rights reserved.
RodColeman 0:0791c1fece8e 11 *
RodColeman 0:0791c1fece8e 12 * Redistribution and use in source and binary forms, with or without modification,
RodColeman 0:0791c1fece8e 13 * are permitted provided that the following conditions are met:
RodColeman 0:0791c1fece8e 14 *
RodColeman 0:0791c1fece8e 15 * 1. Redistributions of source code must retain the above copyright notice,
RodColeman 0:0791c1fece8e 16 * this list of conditions and the following disclaimer.
RodColeman 0:0791c1fece8e 17 * 2. Redistributions in binary form must reproduce the above copyright notice,
RodColeman 0:0791c1fece8e 18 * this list of conditions and the following disclaimer in the documentation
RodColeman 0:0791c1fece8e 19 * and/or other materials provided with the distribution.
RodColeman 0:0791c1fece8e 20 * 3. The name of the author may not be used to endorse or promote products
RodColeman 0:0791c1fece8e 21 * derived from this software without specific prior written permission.
RodColeman 0:0791c1fece8e 22 *
RodColeman 0:0791c1fece8e 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
RodColeman 0:0791c1fece8e 24 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
RodColeman 0:0791c1fece8e 25 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
RodColeman 0:0791c1fece8e 26 * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
RodColeman 0:0791c1fece8e 27 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
RodColeman 0:0791c1fece8e 28 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
RodColeman 0:0791c1fece8e 29 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
RodColeman 0:0791c1fece8e 30 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
RodColeman 0:0791c1fece8e 31 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
RodColeman 0:0791c1fece8e 32 * OF SUCH DAMAGE.
RodColeman 0:0791c1fece8e 33 *
RodColeman 0:0791c1fece8e 34 * Author: Dominik Spies <kontakt@dspies.de>
RodColeman 0:0791c1fece8e 35 *
RodColeman 0:0791c1fece8e 36 * This is a AutoIP implementation for the lwIP TCP/IP stack. It aims to conform
RodColeman 0:0791c1fece8e 37 * with RFC 3927.
RodColeman 0:0791c1fece8e 38 *
RodColeman 0:0791c1fece8e 39 *
RodColeman 0:0791c1fece8e 40 * Please coordinate changes and requests with Dominik Spies
RodColeman 0:0791c1fece8e 41 * <kontakt@dspies.de>
RodColeman 0:0791c1fece8e 42 */
RodColeman 0:0791c1fece8e 43
RodColeman 0:0791c1fece8e 44 #ifndef __LWIP_AUTOIP_H__
RodColeman 0:0791c1fece8e 45 #define __LWIP_AUTOIP_H__
RodColeman 0:0791c1fece8e 46
RodColeman 0:0791c1fece8e 47 #include "lwip/opt.h"
RodColeman 0:0791c1fece8e 48
RodColeman 0:0791c1fece8e 49 #if LWIP_AUTOIP /* don't build if not configured for use in lwipopts.h */
RodColeman 0:0791c1fece8e 50
RodColeman 0:0791c1fece8e 51 #include "lwip/netif.h"
RodColeman 0:0791c1fece8e 52 #include "lwip/udp.h"
RodColeman 0:0791c1fece8e 53 #include "netif/etharp.h"
RodColeman 0:0791c1fece8e 54
RodColeman 0:0791c1fece8e 55 #ifdef __cplusplus
RodColeman 0:0791c1fece8e 56 extern "C" {
RodColeman 0:0791c1fece8e 57 #endif
RodColeman 0:0791c1fece8e 58
RodColeman 0:0791c1fece8e 59 /* AutoIP Timing */
RodColeman 0:0791c1fece8e 60 #define AUTOIP_TMR_INTERVAL 100
RodColeman 0:0791c1fece8e 61 #define AUTOIP_TICKS_PER_SECOND (1000 / AUTOIP_TMR_INTERVAL)
RodColeman 0:0791c1fece8e 62
RodColeman 0:0791c1fece8e 63 /* RFC 3927 Constants */
RodColeman 0:0791c1fece8e 64 #define PROBE_WAIT 1 /* second (initial random delay) */
RodColeman 0:0791c1fece8e 65 #define PROBE_MIN 1 /* second (minimum delay till repeated probe) */
RodColeman 0:0791c1fece8e 66 #define PROBE_MAX 2 /* seconds (maximum delay till repeated probe) */
RodColeman 0:0791c1fece8e 67 #define PROBE_NUM 3 /* (number of probe packets) */
RodColeman 0:0791c1fece8e 68 #define ANNOUNCE_NUM 2 /* (number of announcement packets) */
RodColeman 0:0791c1fece8e 69 #define ANNOUNCE_INTERVAL 2 /* seconds (time between announcement packets) */
RodColeman 0:0791c1fece8e 70 #define ANNOUNCE_WAIT 2 /* seconds (delay before announcing) */
RodColeman 0:0791c1fece8e 71 #define MAX_CONFLICTS 10 /* (max conflicts before rate limiting) */
RodColeman 0:0791c1fece8e 72 #define RATE_LIMIT_INTERVAL 60 /* seconds (delay between successive attempts) */
RodColeman 0:0791c1fece8e 73 #define DEFEND_INTERVAL 10 /* seconds (min. wait between defensive ARPs) */
RodColeman 0:0791c1fece8e 74
RodColeman 0:0791c1fece8e 75 /* AutoIP client states */
RodColeman 0:0791c1fece8e 76 #define AUTOIP_STATE_OFF 0
RodColeman 0:0791c1fece8e 77 #define AUTOIP_STATE_PROBING 1
RodColeman 0:0791c1fece8e 78 #define AUTOIP_STATE_ANNOUNCING 2
RodColeman 0:0791c1fece8e 79 #define AUTOIP_STATE_BOUND 3
RodColeman 0:0791c1fece8e 80
RodColeman 0:0791c1fece8e 81 struct autoip
RodColeman 0:0791c1fece8e 82 {
RodColeman 0:0791c1fece8e 83 struct ip_addr llipaddr; /* the currently selected, probed, announced or used LL IP-Address */
RodColeman 0:0791c1fece8e 84 u8_t state; /* current AutoIP state machine state */
RodColeman 0:0791c1fece8e 85 u8_t sent_num; /* sent number of probes or announces, dependent on state */
RodColeman 0:0791c1fece8e 86 u16_t ttw; /* ticks to wait, tick is AUTOIP_TMR_INTERVAL long */
RodColeman 0:0791c1fece8e 87 u8_t lastconflict; /* ticks until a conflict can be solved by defending */
RodColeman 0:0791c1fece8e 88 u8_t tried_llipaddr; /* total number of probed/used Link Local IP-Addresses */
RodColeman 0:0791c1fece8e 89 };
RodColeman 0:0791c1fece8e 90
RodColeman 0:0791c1fece8e 91
RodColeman 0:0791c1fece8e 92 /** Init srand, has to be called before entering mainloop */
RodColeman 0:0791c1fece8e 93 void autoip_init(void);
RodColeman 0:0791c1fece8e 94
RodColeman 0:0791c1fece8e 95 /** Start AutoIP client */
RodColeman 0:0791c1fece8e 96 err_t autoip_start(struct netif *netif);
RodColeman 0:0791c1fece8e 97
RodColeman 0:0791c1fece8e 98 /** Stop AutoIP client */
RodColeman 0:0791c1fece8e 99 err_t autoip_stop(struct netif *netif);
RodColeman 0:0791c1fece8e 100
RodColeman 0:0791c1fece8e 101 /** Handles every incoming ARP Packet, called by etharp_arp_input */
RodColeman 0:0791c1fece8e 102 void autoip_arp_reply(struct netif *netif, struct etharp_hdr *hdr);
RodColeman 0:0791c1fece8e 103
RodColeman 0:0791c1fece8e 104 /** Has to be called in loop every AUTOIP_TMR_INTERVAL milliseconds */
RodColeman 0:0791c1fece8e 105 void autoip_tmr(void);
RodColeman 0:0791c1fece8e 106
RodColeman 0:0791c1fece8e 107 /** Handle a possible change in the network configuration */
RodColeman 0:0791c1fece8e 108 void autoip_network_changed(struct netif *netif);
RodColeman 0:0791c1fece8e 109
RodColeman 0:0791c1fece8e 110 #ifdef __cplusplus
RodColeman 0:0791c1fece8e 111 }
RodColeman 0:0791c1fece8e 112 #endif
RodColeman 0:0791c1fece8e 113
RodColeman 0:0791c1fece8e 114 #endif /* LWIP_AUTOIP */
RodColeman 0:0791c1fece8e 115
RodColeman 0:0791c1fece8e 116 #endif /* __LWIP_AUTOIP_H__ */