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Contrib module by Dominik Spies: autoip.h, autoip.c, dhcp.h, dhcp.c, netif.h, netif.c, etharp.h, etharp.c, opt.h: AutoIP implementation available for IPv4, with new options LWIP_AUTOIP and LWIP_DHCP_AUTOIP_COOP if you want to cooperate with DHCP. Some tips to adapt (see TODO mark in the source code).
This commit is contained in:
fbernon
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src/include/ipv4/lwip/autoip.h
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src/include/ipv4/lwip/autoip.h
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/**
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* @file
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*
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* AutoIP Automatic LinkLocal IP Configuration
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*/
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/*
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*
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* Copyright (c) 2007 Dominik Spies <kontakt@dspies.de>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT
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* SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
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* OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
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* OF SUCH DAMAGE.
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*
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* Author: Dominik Spies <kontakt@dspies.de>
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*
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* This is a AutoIP implementation for the lwIP TCP/IP stack. It aims to conform
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* with RFC 3927.
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*
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*
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* Please coordinate changes and requests with Dominik Spies
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* <kontakt@dspies.de>
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*/
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#ifndef __LWIP_AUTOIP_H__
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#define __LWIP_AUTOIP_H__
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#include "lwip/opt.h"
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#include "lwip/netif.h"
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#include "lwip/udp.h"
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#include "netif/etharp.h"
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/* AutoIP Timing */
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#define AUTOIP_FINE_TIMER_MSECS 100
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#define AUTOIP_FINE_TIMER_TICK_PER_SECOND 1000 / AUTOIP_FINE_TIMER_MSECS
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/* RFC 3927 Constants */
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#define PROBE_WAIT 1 /* second (initial random delay) */
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#define PROBE_MIN 1 /* second (minimum delay till repeated probe) */
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#define PROBE_MAX 2 /* seconds (maximum delay till repeated probe) */
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#define PROBE_NUM 3 /* (number of probe packets) */
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#define ANNOUNCE_NUM 2 /* (number of announcement packets) */
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#define ANNOUNCE_INTERVAL 2 /* seconds (time between announcement packets) */
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#define ANNOUNCE_WAIT 2 /* seconds (delay before announcing) */
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#define MAX_CONFLICTS 10 /* (max conflicts before rate limiting) */
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#define RATE_LIMIT_INTERVAL 60 /* seconds (delay between successive attempts) */
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#define DEFEND_INTERVAL 10 /* seconds (min. wait between defensive ARPs) */
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/* AutoIP client states */
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#define AUTOIP_STATE_OFF 0
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#define AUTOIP_STATE_PROBING 1
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#define AUTOIP_STATE_ANNOUNCING 2
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#define AUTOIP_STATE_BOUND 3
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struct autoip
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{
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u8_t state; /* current AutoIP state machine state */
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u8_t sent_num; /* sent number of probes or announces, dependent on state */
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u16_t ttw; /* ticks to wait, tick is AUTOIP_FINE_TIMER_MSECS long */
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u8_t lastconflict; /* ticks until a conflict can be solved by defending */
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u8_t tried_llipaddr; /* total number of probed/used Link Local IP-Addresses */
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struct ip_addr llipaddr; /* the currently selected, probed, announced or used LL IP-Address */
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};
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/** Init srand, has to be called before entering mainloop */
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void autoip_init(void);
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/** Start AutoIP client */
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err_t autoip_start(struct netif *netif);
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/** Stop AutoIP client */
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err_t autoip_stop(struct netif *netif);
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/** Handles every incoming ARP Packet, called by etharp_arp_input */
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void autoip_arp_reply(struct netif *netif, struct etharp_hdr *hdr);
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/** Has to be called in loop every AUTOIP_FINE_TIMER_MSECS milliseconds */
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void autoip_fine_tmr(void);
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#endif /* __LWIP_AUTOIP_H__ */
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@@ -57,6 +57,9 @@ struct dhcp
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/** Patch #1308
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* TODO: See dhcp.c "TODO"s
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*/
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#if LWIP_DHCP_AUTOIP_COOP
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u8_t autoip_coop_state;
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#endif
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#if 0
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struct ip_addr offered_si_addr;
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u8_t *boot_file_name;
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@@ -165,6 +168,10 @@ void dhcp_fine_tmr(void);
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/** not yet implemented #define DHCP_RELEASING 11 */
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#define DHCP_BACKING_OFF 12
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#define DHCP_OFF 13
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/** AUTOIP cooperatation flags */
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#define DHCP_AUTOIP_COOP_STATE_OFF 0
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#define DHCP_AUTOIP_COOP_STATE_ON 1
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#define DHCP_BOOTREQUEST 1
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#define DHCP_BOOTREPLY 2
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@@ -43,6 +43,9 @@
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#if LWIP_DHCP
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# include "lwip/dhcp.h"
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#endif
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#if LWIP_AUTOIP
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# include "lwip/autoip.h"
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#endif
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#ifdef __cplusplus
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extern "C" {
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@@ -111,6 +114,10 @@ struct netif {
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/** the DHCP client state information for this netif */
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struct dhcp *dhcp;
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#endif /* LWIP_DHCP */
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#if LWIP_AUTOIP
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/** the AutoIP client state information for this netif */
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struct autoip *autoip;
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#endif
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#if LWIP_NETIF_HOSTNAME
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/* the hostname for this netif, NULL is a valid value */
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char* hostname;
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@@ -309,6 +309,15 @@ a lot of data that needs to be copied, this should be set high. */
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#define DHCP_DOES_ARP_CHECK 1
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#endif
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/* ---------- AUTOIP options -------- */
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#ifndef LWIP_AUTOIP
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#define LWIP_AUTOIP 0
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#endif
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#ifndef LWIP_DHCP_AUTOIP_COOP
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#define LWIP_DHCP_AUTOIP_COOP 0
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#endif
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/* ---------- SNMP options ---------- */
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/** @note UDP must be available for SNMP transport */
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#ifndef LWIP_SNMP
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@@ -803,23 +812,27 @@ a lot of data that needs to be copied, this should be set high. */
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#define TCPIP_DEBUG LWIP_DBG_OFF
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#endif
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#ifndef PPP_DEBUG
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#ifndef PPP_DEBUG
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#define PPP_DEBUG LWIP_DBG_OFF
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#endif
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#ifndef SLIP_DEBUG
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#ifndef SLIP_DEBUG
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#define SLIP_DEBUG LWIP_DBG_OFF
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#endif
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#ifndef DHCP_DEBUG
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#ifndef DHCP_DEBUG
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#define DHCP_DEBUG LWIP_DBG_OFF
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#endif
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#ifndef SNMP_MSG_DEBUG
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#ifndef AUTOIP_DEBUG
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#define AUTOIP_DEBUG LWIP_DBG_OFF
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#endif
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#ifndef SNMP_MSG_DEBUG
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#define SNMP_MSG_DEBUG LWIP_DBG_OFF
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#endif
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#ifndef SNMP_MIB_DEBUG
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#ifndef SNMP_MIB_DEBUG
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#define SNMP_MIB_DEBUG LWIP_DBG_OFF
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#endif
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@@ -118,6 +118,10 @@ PACK_STRUCT_END
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#define ETHTYPE_ARP 0x0806
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#define ETHTYPE_IP 0x0800
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/** ARP message types */
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#define ARP_REQUEST 1
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#define ARP_REPLY 2
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#if ARP_QUEUEING
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/** struct for queueing outgoing packets for unknown address
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* defined here to be accessed by memp.h
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@@ -139,6 +143,12 @@ err_t etharp_output(struct netif *netif, struct pbuf *q, struct ip_addr *ipaddr)
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err_t etharp_query(struct netif *netif, struct ip_addr *ipaddr, struct pbuf *q);
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err_t etharp_request(struct netif *netif, struct ip_addr *ipaddr);
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#if LWIP_AUTOIP
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err_t etharp_raw(struct netif *netif, struct eth_addr *ethsrc_addr, struct eth_addr *ethdst_addr, struct eth_addr *hwsrc_addr, struct ip_addr *ipsrc_addr, struct eth_addr *hwdst_addr, struct ip_addr *ipdst_addr, unsigned short int OpCode);
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#endif /* LWIP_AUTOIP */
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#define eth_addr_cmp(addr1, addr2) (memcmp((addr1)->addr, (addr2)->addr, 6) == 0)
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#ifdef __cplusplus
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}
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#endif
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