started integration of Mathildes and Juliens new uip6 code + made some ND timers configurable
This commit is contained in:
joxe
parent
5877528f3a
commit
4c2daf9886
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/**
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* \addtogroup uip6
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* @{
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*/
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/**
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* \file
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* IPv6 data structures handling functions
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* Comprises part of the Neighbor discovery (RFC 4861)
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* and auto configuration (RFC 4862 )state machines
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* \author Mathilde Durvy <mdurvy@cisco.com>
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* \author Julien Abeille <jabeille@cisco.com>
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*/
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/*
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* Copyright (c) 2006, Swedish Institute of Computer Science.
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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
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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*/
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#include <string.h>
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#include <stdlib.h>
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#include "lib/random.h"
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#include "net/uip-nd6.h"
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#include "net/uip-ds6.h"
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#define DEBUG 1
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#if DEBUG
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#include <stdio.h>
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#define PRINTF(...) printf(__VA_ARGS__)
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#define PRINT6ADDR(addr) PRINTF(" %02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x:%02x%02x ", ((uint8_t *)addr)[0], ((uint8_t *)addr)[1], ((uint8_t *)addr)[2], ((uint8_t *)addr)[3], ((uint8_t *)addr)[4], ((uint8_t *)addr)[5], ((uint8_t *)addr)[6], ((uint8_t *)addr)[7], ((uint8_t *)addr)[8], ((uint8_t *)addr)[9], ((uint8_t *)addr)[10], ((uint8_t *)addr)[11], ((uint8_t *)addr)[12], ((uint8_t *)addr)[13], ((uint8_t *)addr)[14], ((uint8_t *)addr)[15])
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#define PRINTLLADDR(lladdr) PRINTF(" %02x:%02x:%02x:%02x:%02x:%02x ",lladdr->addr[0], lladdr->addr[1], lladdr->addr[2], lladdr->addr[3],lladdr->addr[4], lladdr->addr[5])
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#else
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#define PRINTF(...)
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#define PRINT6ADDR(addr)
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#define PRINTLLADDR(addr)
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#endif
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struct etimer uip_ds6_timer_periodic; /** \brief Timer for maintenance of data structures */
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#if UIP_CONF_ROUTER
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struct stimer uip_ds6_timer_ra; /** \brief RA timer, to schedule RA sending */
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static uint8_t racount; /** \brief number of RA already sent */
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static uint16_t rand_time; /** \brief random time value for timers */
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#else /* UIP_CONF_ROUTER */
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struct etimer uip_ds6_timer_rs; /** \brief RS timer, to schedule RS sending */
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static uint8_t rscount; /** \brief number of rs already sent */
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#endif /* UIP_CONF_ROUTER */
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/** \name "DS6" Data structures */
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/** @{ */
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uip_ds6_netif uip_ds6_if; /** \brief The single interface */
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uip_ds6_nbr uip_ds6_nbr_cache[UIP_DS6_NBR_NB]; /** \brief Neighor cache */
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uip_ds6_defrt uip_ds6_defrt_list[UIP_DS6_DEFRT_NB]; /** \brief Default rt list */
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uip_ds6_prefix uip_ds6_prefix_list[UIP_DS6_PREFIX_NB]; /** \brief Prefix list */
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uip_ds6_route uip_ds6_routing_table[UIP_DS6_ROUTE_NB]; /** \brief Routing table */
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/** @} */
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/* "full" (as opposed to pointer) ip address used in this file, */
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static uip_ipaddr_t loc_fipaddr;
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/* Pointers used in this file */
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static uip_ipaddr_t* locipaddr;
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static uip_ds6_addr* locaddr;
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static uip_ds6_maddr* locmaddr;
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static uip_ds6_aaddr* locaaddr;
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static uip_ds6_prefix* locprefix;
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static uip_ds6_nbr* locnbr;
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static uip_ds6_defrt* locdefrt;
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static uip_ds6_route* locroute;
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/*---------------------------------------------------------------------------*/
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void
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uip_ds6_init(void) {
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PRINTF("Init of IPv6 data structures\n");
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PRINTF("%u neighbors\n%u default routers\n%u prefixes\n%u routes\n%u unicast addresses\n%u multicast addresses\n%u anycast addresses\n", UIP_DS6_NBR_NB, UIP_DS6_DEFRT_NB, UIP_DS6_PREFIX_NB, UIP_DS6_ROUTE_NB, UIP_DS6_ADDR_NB, UIP_DS6_MADDR_NB, UIP_DS6_AADDR_NB);
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for(locnbr = uip_ds6_nbr_cache; locnbr < uip_ds6_nbr_cache + UIP_DS6_NBR_NB; locnbr++) {
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locnbr->isused = 0;
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}
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for(locdefrt = uip_ds6_defrt_list; locdefrt < uip_ds6_defrt_list + UIP_DS6_DEFRT_NB; locdefrt++) {
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locdefrt->isused = 0;
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}
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for(locprefix = uip_ds6_prefix_list; locprefix < uip_ds6_prefix_list + UIP_DS6_PREFIX_NB; locprefix++) {
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locprefix->isused = 0;
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}
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for(locaddr = uip_ds6_if.addr_list; locaddr < uip_ds6_if.addr_list + UIP_DS6_ADDR_NB; locaddr++) {
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locaddr->isused = 0;
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}
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for(locmaddr = uip_ds6_if.maddr_list; locmaddr < uip_ds6_if.maddr_list + UIP_DS6_MADDR_NB; locmaddr++) {
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locmaddr->isused = 0;
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}
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for(locaaddr = uip_ds6_if.aaddr_list; locaaddr < uip_ds6_if.aaddr_list + UIP_DS6_AADDR_NB; locaaddr++) {
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locaaddr->isused = 0;
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}
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for(locroute = uip_ds6_routing_table; locroute < uip_ds6_routing_table + UIP_DS6_ROUTE_NB; locroute++) {
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locroute->isused = 0;
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}
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/* Set interface parameters */
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uip_ds6_if.link_mtu = UIP_LINK_MTU;
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uip_ds6_if.cur_hop_limit = UIP_TTL;
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uip_ds6_if.base_reachable_time = UIP_ND6_REACHABLE_TIME;
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uip_ds6_if.reachable_time = uip_ds6_compute_reachable_time();
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uip_ds6_if.retrans_timer = UIP_ND6_RETRANS_TIMER;
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uip_ds6_if.maxdadns = UIP_ND6_DEF_MAXDADNS;
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/* Create link local address, prefix, multicast addresses, anycast addresses */
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uip_create_linklocal_prefix(&loc_fipaddr);
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#if UIP_CONF_ROUTER
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uip_ds6_prefix_add(&loc_fipaddr, UIP_DEFAULT_PREFIX_LEN, 0, 0, 0, 0);
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#else /* UIP_CONF_ROUTER */
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uip_ds6_prefix_add(&loc_fipaddr, UIP_DEFAULT_PREFIX_LEN, 0);
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#endif /* UIP_CONF_ROUTER */
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uip_ds6_set_addr_iid(&loc_fipaddr, &uip_lladdr);
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uip_ds6_addr_add(&loc_fipaddr, 0, ADDR_AUTOCONF);
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uip_create_linklocal_allnodes_mcast(&loc_fipaddr);
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uip_ds6_maddr_add(&loc_fipaddr);
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#if UIP_CONF_ROUTER
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uip_create_linklocal_allrouters_mcast(&loc_fipaddr);
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uip_ds6_maddr_add(&loc_fipaddr);
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#if UIP_ND6_SEND_RA
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stimer_set(&uip_ds6_timer_ra, 2); /* wait to have a link local IP address */
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#endif /* UIP_ND6_SEND_RA */
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#else /* UIP_CONF_ROUTER */
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etimer_set(&uip_ds6_timer_rs, random_rand()%(UIP_ND6_MAX_RTR_SOLICITATION_DELAY * CLOCK_SECOND));
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#endif /* UIP_CONF_ROUTER */
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etimer_set(&uip_ds6_timer_periodic, UIP_DS6_PERIOD);
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return;
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}
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/*---------------------------------------------------------------------------*/
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void
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uip_ds6_periodic(void) {
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/* Periodic processing on unicast addresses */
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for(locaddr = uip_ds6_if.addr_list; locaddr < uip_ds6_if.addr_list + UIP_DS6_ADDR_NB; locaddr++) {
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if(locaddr->isused) {
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if((!locaddr->isinfinite) && (stimer_expired(&locaddr->vlifetime))) {
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uip_ds6_addr_rm(locaddr);
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} else if ((locaddr->state == ADDR_TENTATIVE) && (locaddr->dadnscount <= uip_ds6_if.maxdadns) && (timer_expired(&locaddr->dadtimer))) {
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uip_ds6_dad(locaddr);
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}
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}
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}
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/* Periodic processing on default routers */
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for(locdefrt = uip_ds6_defrt_list; locdefrt < uip_ds6_defrt_list + UIP_DS6_DEFRT_NB; locdefrt++) {
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if((locdefrt->isused) && (stimer_expired(&(locdefrt->lifetime)))) {
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uip_ds6_defrt_rm(locdefrt);
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}
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}
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#if !UIP_CONF_ROUTER
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/* Periodic processing on prefixes */
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for(locprefix = uip_ds6_prefix_list; locprefix < uip_ds6_prefix_list + UIP_DS6_PREFIX_NB; locprefix++) {
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if((locprefix->isused) &&
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(!locprefix->isinfinite) &&
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(stimer_expired(&(locprefix->vlifetime)))) {
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uip_ds6_prefix_rm(locprefix);
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}
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}
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#endif /* !UIP_CONF_ROUTER */
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/* Periodic processing on neighbors */
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for(locnbr = uip_ds6_nbr_cache; locnbr < uip_ds6_nbr_cache + UIP_DS6_NBR_NB; locnbr++) {
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if(locnbr->isused) {
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switch (locnbr->state) {
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case NBR_INCOMPLETE:
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if(locnbr->nscount >= UIP_ND6_MAX_MULTICAST_SOLICIT) {
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uip_ds6_nbr_rm(locnbr);
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}
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else if(stimer_expired(&(locnbr->sendns))) {
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locnbr->nscount++;
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PRINTF("NBR_INCOMPLETE: NS %u\n",locnbr->nscount);
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uip_nd6_ns_output(NULL, NULL, &locnbr->ipaddr);
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stimer_set(&(locnbr->sendns), uip_ds6_if.retrans_timer / 1000);
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}
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break;
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case NBR_REACHABLE:
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if(stimer_expired(&(locnbr->reachable))) {
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PRINTF("REACHABLE: moving to STALE (");
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PRINT6ADDR(&locnbr->ipaddr);
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PRINTF(")\n");
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locnbr->state = NBR_STALE;
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}
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break;
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case NBR_DELAY:
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if(stimer_expired(&(locnbr->reachable))) {
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locnbr->state = NBR_PROBE;
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locnbr->nscount = 1;
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PRINTF("DELAY: moving to PROBE + NS %u\n", locnbr->nscount);
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uip_nd6_ns_output(NULL, &locnbr->ipaddr, &locnbr->ipaddr);
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stimer_set(&(locnbr->sendns),
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uip_ds6_if.retrans_timer / 1000);
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}
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break;
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case NBR_PROBE:
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if(locnbr->nscount >= UIP_ND6_MAX_UNICAST_SOLICIT) {
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PRINTF("PROBE END \n");
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if((locdefrt = uip_ds6_defrt_lookup(&locnbr->ipaddr)) != NULL) {
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uip_ds6_defrt_rm(locdefrt);
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}
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uip_ds6_nbr_rm(locnbr);
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} else if(stimer_expired(&(locnbr->sendns))){
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locnbr->nscount++;
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PRINTF("PROBE: NS %u\n",locnbr->nscount);
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uip_nd6_ns_output(NULL, &locnbr->ipaddr, &locnbr->ipaddr);
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stimer_set(&(locnbr->sendns), uip_ds6_if.retrans_timer / 1000);
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}
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break;
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default:
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break;
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}
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}
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}
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#if UIP_CONF_ROUTER & UIP_ND6_SEND_RA
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/* Periodic RA sending */
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if(stimer_expired(&uip_ds6_timer_ra)) {
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uip_ds6_send_ra_periodic();
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}
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#endif /* UIP_CONF_ROUTER & UIP_ND6_SEND_RA */
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etimer_reset(&uip_ds6_timer_periodic);
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return;
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}
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/*---------------------------------------------------------------------------*/
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uint8_t uip_ds6_list_loop(uip_ds6_element* list, uint8_t size, uint16_t elementsize, uip_ipaddr_t* ipaddr, uint8_t ipaddrlen, uip_ds6_element** out_element) {
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uip_ds6_element *element;
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*out_element = NULL;
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for(element = list; element < (uip_ds6_element*)((uint8_t*)list + (size * elementsize)); element = (uip_ds6_element*)((uint8_t*)element + elementsize)) {
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if(element->isused) {
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if(uip_ipaddr_prefixcmp(&(element->ipaddr), ipaddr, ipaddrlen)) {
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*out_element = element;
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return FOUND;
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}
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} else {
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*out_element = element;
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}
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}
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if(*out_element) {
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return FREESPACE;
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} else {
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return NOSPACE;
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}
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}
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/*---------------------------------------------------------------------------*/
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uip_ds6_nbr*
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uip_ds6_nbr_add(uip_ipaddr_t *ipaddr, uip_lladdr_t *lladdr, uint8_t isrouter, uint8_t state) {
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if(uip_ds6_list_loop((uip_ds6_element*)uip_ds6_nbr_cache, UIP_DS6_NBR_NB, sizeof(uip_ds6_nbr),ipaddr, 128, (uip_ds6_element**)&locnbr) == FREESPACE) {
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locnbr->isused = 1;
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uip_ipaddr_copy(&(locnbr->ipaddr), ipaddr);
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if(lladdr != NULL){
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memcpy(&(locnbr->lladdr), lladdr, UIP_LLADDR_LEN);
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} else {
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memset(&(locnbr->lladdr), 0, UIP_LLADDR_LEN);
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}
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locnbr->isrouter = isrouter;
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locnbr->state = state;
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/* timers are set separately, for now we put them in expired state */
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stimer_set(&(locnbr->reachable),0);
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stimer_set(&(locnbr->sendns),0);
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locnbr->nscount = 0;
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PRINTF("Adding neighbor with ip addr");
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PRINT6ADDR(ipaddr);
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PRINTF("link addr");
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PRINTLLADDR((&(locnbr->lladdr)));
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PRINTF("state %u\n", state);
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return locnbr;
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}
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return NULL;
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}
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/*---------------------------------------------------------------------------*/
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void
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uip_ds6_nbr_rm(uip_ds6_nbr* nbr) {
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if(nbr != NULL) {
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nbr->isused = 0;
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}
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return;
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}
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/*---------------------------------------------------------------------------*/
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uip_ds6_nbr*
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uip_ds6_nbr_lookup(uip_ipaddr_t *ipaddr) {
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if(uip_ds6_list_loop((uip_ds6_element*)uip_ds6_nbr_cache, UIP_DS6_NBR_NB, sizeof(uip_ds6_nbr) ,ipaddr, 128, (uip_ds6_element**)&locnbr) == FOUND) {
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return locnbr;
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}
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return NULL;
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}
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/*---------------------------------------------------------------------------*/
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uip_ds6_defrt*
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uip_ds6_defrt_add(uip_ipaddr_t *ipaddr, unsigned long interval) {
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if(uip_ds6_list_loop((uip_ds6_element*)uip_ds6_defrt_list, UIP_DS6_DEFRT_NB, sizeof(uip_ds6_defrt),ipaddr, 128, (uip_ds6_element**)&locdefrt) == FREESPACE) {
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locdefrt->isused = 1;
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uip_ipaddr_copy(&(locdefrt->ipaddr), ipaddr);
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stimer_set(&(locdefrt->lifetime), interval);
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PRINTF("Adding defrouter with ip addr");
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PRINT6ADDR(&locdefrt->ipaddr);
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PRINTF("\n");
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return locdefrt;
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}
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return NULL;
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}
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/*---------------------------------------------------------------------------*/
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void
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uip_ds6_defrt_rm(uip_ds6_defrt* defrt) {
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if(defrt != NULL) {
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defrt->isused = 0;
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}
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return;
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}
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/*---------------------------------------------------------------------------*/
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uip_ds6_defrt*
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uip_ds6_defrt_lookup(uip_ipaddr_t *ipaddr) {
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if(uip_ds6_list_loop((uip_ds6_element*)uip_ds6_defrt_list, UIP_DS6_DEFRT_NB, sizeof(uip_ds6_defrt),ipaddr, 128, (uip_ds6_element**)&locdefrt) == FOUND) {
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return locdefrt;
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}
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return NULL;
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}
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/*---------------------------------------------------------------------------*/
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uip_ipaddr_t*
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uip_ds6_defrt_choose() {
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uip_ds6_nbr *bestnbr;
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locipaddr = NULL;
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for(locdefrt = uip_ds6_defrt_list; locdefrt < uip_ds6_defrt_list + UIP_DS6_DEFRT_NB; locdefrt++) {
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if(locdefrt->isused) {
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PRINTF("Defrt, IP address ");
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PRINT6ADDR(&locdefrt->ipaddr);
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PRINTF("\n");
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bestnbr = uip_ds6_nbr_lookup(&locdefrt->ipaddr);
|
||||
if((bestnbr != NULL) && (bestnbr->state != NBR_INCOMPLETE)) {
|
||||
PRINTF("Defrt found, IP address ");
|
||||
PRINT6ADDR(&locdefrt->ipaddr);
|
||||
PRINTF("\n");
|
||||
return &locdefrt->ipaddr;
|
||||
} else {
|
||||
locipaddr = &locdefrt->ipaddr;
|
||||
PRINTF("Defrt INCOMPLETE found, IP address ");
|
||||
PRINT6ADDR(&locdefrt->ipaddr);
|
||||
PRINTF("\n");
|
||||
}
|
||||
}
|
||||
}
|
||||
return locipaddr;
|
||||
}
|
||||
|
||||
#if UIP_CONF_ROUTER
|
||||
/*---------------------------------------------------------------------------*/
|
||||
uip_ds6_prefix*
|
||||
uip_ds6_prefix_add(uip_ipaddr_t *ipaddr, uint8_t ipaddrlen, uint8_t advertise, uint8_t flags, unsigned long vtime, unsigned long ptime) {
|
||||
if(uip_ds6_list_loop((uip_ds6_element*)uip_ds6_prefix_list, UIP_DS6_PREFIX_NB, sizeof(uip_ds6_prefix), ipaddr, ipaddrlen, (uip_ds6_element**)&locprefix) == FREESPACE) {
|
||||
locprefix->isused = 1;
|
||||
uip_ipaddr_copy(&(locprefix->ipaddr), ipaddr);
|
||||
locprefix->length = ipaddrlen;
|
||||
locprefix->advertise = advertise;
|
||||
locprefix->l_a_reserved = flags;
|
||||
locprefix->vlifetime = vtime;
|
||||
locprefix->plifetime = ptime;
|
||||
PRINTF("Adding prefix ");
|
||||
PRINT6ADDR(&locprefix->ipaddr);
|
||||
PRINTF("length %u, flags %x, Valid lifetime %lx, Preffered lifetime %lx\n", ipaddrlen, flags, vtime, ptime);
|
||||
return locprefix;
|
||||
} else {
|
||||
PRINTF("No more space in Prefix list\n");
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
|
||||
#else /* UIP_CONF_ROUTER */
|
||||
uip_ds6_prefix*
|
||||
uip_ds6_prefix_add(uip_ipaddr_t *ipaddr, uint8_t ipaddrlen, unsigned long interval){
|
||||
if(uip_ds6_list_loop((uip_ds6_element*)uip_ds6_prefix_list, UIP_DS6_PREFIX_NB, sizeof(uip_ds6_prefix), ipaddr, ipaddrlen, (uip_ds6_element**)&locprefix) == FREESPACE) {
|
||||
locprefix->isused = 1;
|
||||
uip_ipaddr_copy(&(locprefix->ipaddr), ipaddr);
|
||||
locprefix->length = ipaddrlen;
|
||||
if(interval != 0){
|
||||
stimer_set(&(locprefix->vlifetime),interval);
|
||||
locprefix->isinfinite = 0;
|
||||
} else {
|
||||
locprefix->isinfinite = 1;
|
||||
}
|
||||
PRINTF("Adding prefix ");
|
||||
PRINT6ADDR(&locprefix->ipaddr);
|
||||
PRINTF("length %u, vlifetime%lu\n", ipaddrlen, interval);
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
#endif /* UIP_CONF_ROUTER */
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
|
||||
void
|
||||
uip_ds6_prefix_rm( uip_ds6_prefix *prefix) {
|
||||
if(prefix != NULL) {
|
||||
prefix->isused = 0;
|
||||
}
|
||||
return;
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
uip_ds6_prefix*
|
||||
uip_ds6_prefix_lookup(uip_ipaddr_t *ipaddr, uint8_t ipaddrlen) {
|
||||
if(uip_ds6_list_loop((uip_ds6_element*)uip_ds6_prefix_list, UIP_DS6_PREFIX_NB, sizeof(uip_ds6_prefix), ipaddr, ipaddrlen, (uip_ds6_element**)&locprefix) == FOUND) {
|
||||
return locprefix;
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
uint8_t uip_ds6_is_addr_onlink(uip_ipaddr_t *ipaddr) {
|
||||
for(locprefix = uip_ds6_prefix_list; locprefix < uip_ds6_prefix_list + UIP_DS6_PREFIX_NB; locprefix++) {
|
||||
if((locprefix->isused) &&
|
||||
(uip_ipaddr_prefixcmp(&locprefix->ipaddr, ipaddr, locprefix->length)) ){
|
||||
return 1;
|
||||
}
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
uip_ds6_addr*
|
||||
uip_ds6_addr_add(uip_ipaddr_t *ipaddr, unsigned long vlifetime, uint8_t type) {
|
||||
if(uip_ds6_list_loop((uip_ds6_element*)uip_ds6_if.addr_list, UIP_DS6_ADDR_NB, sizeof(uip_ds6_addr),ipaddr, 128, (uip_ds6_element**)&locaddr) == FREESPACE) {
|
||||
locaddr->isused = 1;
|
||||
uip_ipaddr_copy(&locaddr->ipaddr, ipaddr);
|
||||
locaddr->state = ADDR_TENTATIVE;
|
||||
locaddr->type = type;
|
||||
if(vlifetime == 0) {
|
||||
locaddr->isinfinite = 1;
|
||||
} else {
|
||||
locaddr->isinfinite = 0;
|
||||
stimer_set(&(locaddr->vlifetime), vlifetime);
|
||||
}
|
||||
timer_set(&locaddr->dadtimer, random_rand()%(UIP_ND6_MAX_RTR_SOLICITATION_DELAY * CLOCK_SECOND));
|
||||
locaddr->dadnscount = 0;
|
||||
uip_create_solicited_node(ipaddr, &loc_fipaddr);
|
||||
uip_ds6_maddr_add(&loc_fipaddr);
|
||||
return locaddr;
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
void
|
||||
uip_ds6_addr_rm(uip_ds6_addr *addr) {
|
||||
if(addr != NULL) {
|
||||
uip_create_solicited_node(&addr->ipaddr, &loc_fipaddr);
|
||||
if((locmaddr = uip_ds6_maddr_lookup(&loc_fipaddr)) != NULL) {
|
||||
uip_ds6_maddr_rm(locmaddr);
|
||||
}
|
||||
addr->isused = 0;
|
||||
}
|
||||
return;
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
uip_ds6_addr*
|
||||
uip_ds6_addr_lookup(uip_ipaddr_t* ipaddr) {
|
||||
if(uip_ds6_list_loop((uip_ds6_element*)uip_ds6_if.addr_list, UIP_DS6_ADDR_NB, sizeof(uip_ds6_addr),ipaddr, 128, (uip_ds6_element**)&locaddr) == FOUND) {
|
||||
return locaddr;
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
uip_ds6_maddr*
|
||||
uip_ds6_maddr_add(uip_ipaddr_t *ipaddr) {
|
||||
if(uip_ds6_list_loop((uip_ds6_element*)uip_ds6_if.maddr_list, UIP_DS6_MADDR_NB, sizeof(uip_ds6_maddr),ipaddr, 128, (uip_ds6_element**)&locmaddr) == FREESPACE) {
|
||||
locmaddr->isused = 1;
|
||||
uip_ipaddr_copy(&locmaddr->ipaddr, ipaddr);
|
||||
return locmaddr;
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
void
|
||||
uip_ds6_maddr_rm(uip_ds6_maddr *maddr) {
|
||||
if(maddr != NULL) {
|
||||
maddr->isused = 0;
|
||||
}
|
||||
return;
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
uip_ds6_maddr*
|
||||
uip_ds6_maddr_lookup(uip_ipaddr_t* ipaddr) {
|
||||
if(uip_ds6_list_loop((uip_ds6_element*)uip_ds6_if.maddr_list, UIP_DS6_MADDR_NB, sizeof(uip_ds6_maddr),ipaddr, 128, (uip_ds6_element**)&locmaddr) == FOUND) {
|
||||
return locmaddr;
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
uip_ds6_aaddr*
|
||||
uip_ds6_aaddr_add(uip_ipaddr_t *ipaddr) {
|
||||
if(uip_ds6_list_loop((uip_ds6_element*)uip_ds6_if.aaddr_list, UIP_DS6_AADDR_NB, sizeof(uip_ds6_aaddr),ipaddr, 128, (uip_ds6_element**)&locaaddr) == FREESPACE) {
|
||||
locaaddr->isused = 1;
|
||||
uip_ipaddr_copy(&locaaddr->ipaddr, ipaddr);
|
||||
return locaaddr;
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
void
|
||||
uip_ds6_aaddr_rm(uip_ds6_aaddr *aaddr) {
|
||||
if(aaddr != NULL) {
|
||||
aaddr->isused = 0;
|
||||
}
|
||||
return;
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
uip_ds6_aaddr*
|
||||
uip_ds6_aaddr_lookup(uip_ipaddr_t* ipaddr) {
|
||||
if(uip_ds6_list_loop((uip_ds6_element*)uip_ds6_if.aaddr_list, UIP_DS6_AADDR_NB, sizeof(uip_ds6_aaddr),ipaddr, 128, (uip_ds6_element**)&locaaddr) == FOUND) {
|
||||
return locaaddr;
|
||||
}
|
||||
return NULL;
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
uip_ipaddr_t*
|
||||
uip_ds6_route_lookup(uip_ipaddr_t *destipaddr) {
|
||||
locipaddr = NULL;
|
||||
uint8_t longestmatch = 0;
|
||||
|
||||
for(locroute = uip_ds6_routing_table; locroute < uip_ds6_routing_table + UIP_DS6_ROUTE_NB; locroute++) {
|
||||
if((locroute->isused) &&
|
||||
(locroute->length >= longestmatch) &&
|
||||
(uip_ipaddr_prefixcmp(destipaddr, &locroute->ipaddr, locroute->length))) {
|
||||
longestmatch = locroute->length;
|
||||
locipaddr = &locroute->ipaddr;
|
||||
}
|
||||
}
|
||||
|
||||
return locipaddr;
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
uip_ds6_route*
|
||||
uip_ds6_route_add(uip_ipaddr_t *ipaddr, u8_t length, uip_ipaddr_t *nexthop, u8_t metric) {
|
||||
|
||||
if(uip_ds6_list_loop((uip_ds6_element*)uip_ds6_routing_table, UIP_DS6_ROUTE_NB, sizeof(uip_ds6_route), ipaddr, length, (uip_ds6_element**)&locroute) == FREESPACE) {
|
||||
locroute->isused = 1;
|
||||
uip_ipaddr_copy(&(locroute->ipaddr), ipaddr);
|
||||
locroute->length = length;
|
||||
uip_ipaddr_copy(&(locroute->nexthop), nexthop);
|
||||
locroute->metric = metric;
|
||||
}
|
||||
|
||||
return locroute;
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
void
|
||||
uip_ds6_route_rm(uip_ds6_route* route) {
|
||||
route->isused = 0;
|
||||
return;
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
void
|
||||
uip_ds6_select_src(uip_ipaddr_t *src, uip_ipaddr_t *dst)
|
||||
{
|
||||
uint8_t best = 0; /* number of bit in common with best match*/
|
||||
uint8_t n = 0;
|
||||
uip_ds6_addr *matchaddr = uip_ds6_if.addr_list;
|
||||
|
||||
if(!uip_is_addr_link_local(dst) && !uip_is_addr_mcast(dst)) {
|
||||
// find longest match
|
||||
for(locaddr = uip_ds6_if.addr_list; locaddr < uip_ds6_if.addr_list + UIP_DS6_ADDR_NB; locaddr++) {
|
||||
if((locaddr->isused) && (locaddr->state == ADDR_PREFERRED)){
|
||||
n = get_match_length(dst, &(locaddr->ipaddr));
|
||||
if(n >= best){
|
||||
best = n;
|
||||
matchaddr = locaddr;
|
||||
}
|
||||
}
|
||||
}
|
||||
} else {
|
||||
// use link local
|
||||
for(locaddr = uip_ds6_if.addr_list; locaddr < uip_ds6_if.addr_list + UIP_DS6_ADDR_NB; locaddr++) {
|
||||
if((locaddr->isused) && (locaddr->state == ADDR_PREFERRED) && (uip_is_addr_link_local(&locaddr->ipaddr))) {
|
||||
matchaddr = locaddr;
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
uip_ipaddr_copy(src, &matchaddr->ipaddr);
|
||||
return;
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
void uip_ds6_set_addr_iid(uip_ipaddr_t *ipaddr, uip_lladdr_t *lladdr) {
|
||||
/* We consider only links with IEEE EUI-64 identifier or
|
||||
* IEEE 48-bit MAC addresses */
|
||||
#if (UIP_LLADDR_LEN == 8)
|
||||
memcpy(ipaddr->u8 + 8, lladdr, UIP_LLADDR_LEN);
|
||||
ipaddr->u8[8] ^= 0x02;
|
||||
#elif (UIP_LLADDR_LEN == 6)
|
||||
memcpy(ipaddr->u8 + 8, lladdr, 3);
|
||||
ipaddr->u8[11] = 0xff;
|
||||
ipaddr->u8[12] = 0xfe;
|
||||
memcpy(ipaddr->u8 + 13, (uint8_t*)lladdr + 3, 3);
|
||||
ipaddr->u8[8] ^= 0x02;
|
||||
#else
|
||||
PRINTF("CAN NOT BUIL INTERFACE IDENTIFIER");
|
||||
PRINTF("THE STACK IS GOING TO SHUT DOWN");
|
||||
PRINTF("THE HOST WILL BE UNREACHABLE");
|
||||
exit(-1);
|
||||
#endif
|
||||
return;
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
uint8_t
|
||||
get_match_length(uip_ipaddr_t *src, uip_ipaddr_t *dst) {
|
||||
uint8_t j, k, x_or;
|
||||
uint8_t len = 0;
|
||||
for(j = 0; j < 16; j ++) {
|
||||
if(src->u8[j] == dst->u8[j]) {
|
||||
len += 8;
|
||||
} else {
|
||||
x_or = src->u8[j] ^ dst->u8[j];
|
||||
for(k = 0; k < 8; k ++) {
|
||||
if((x_or & 0x80) == 0){
|
||||
len ++;
|
||||
x_or <<= 1;
|
||||
}
|
||||
else {
|
||||
break;
|
||||
}
|
||||
}
|
||||
break;
|
||||
}
|
||||
}
|
||||
return len;
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
void
|
||||
uip_ds6_dad(uip_ds6_addr* addr) {
|
||||
/* send maxdadns NS for DAD */
|
||||
if(addr->dadnscount < uip_ds6_if.maxdadns) {
|
||||
uip_nd6_ns_output(NULL, NULL, &addr->ipaddr);
|
||||
addr->dadnscount++;
|
||||
timer_set(&addr->dadtimer, uip_ds6_if.retrans_timer / 1000 * CLOCK_SECOND);
|
||||
return;
|
||||
}
|
||||
/*
|
||||
* If we arrive here it means DAD succeeded, otherwise the dad process
|
||||
* would have been interrupted in ds6_dad_ns/na_input
|
||||
*/
|
||||
PRINTF("DAD succeeded, ipaddr:");
|
||||
PRINT6ADDR(&addr->ipaddr);
|
||||
PRINTF("\n");
|
||||
|
||||
addr->state = ADDR_PREFERRED;
|
||||
return;
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
void
|
||||
uip_ds6_dad_failed(uip_ds6_addr *addr) {
|
||||
if(uip_is_addr_link_local(&addr->ipaddr)) {
|
||||
PRINTF("Contiki shutdown, DAD for link local address failed\n");
|
||||
exit(-1);
|
||||
}
|
||||
uip_ds6_addr_rm(addr);
|
||||
return;
|
||||
}
|
||||
|
||||
#if UIP_CONF_ROUTER
|
||||
#if UIP_ND6_SEND_RA
|
||||
/*---------------------------------------------------------------------------*/
|
||||
void
|
||||
uip_ds6_send_ra_sollicited(void) {
|
||||
/* We have a pb here: RA timer max possible value is 1800s,
|
||||
* hence we have to use stimers. However, when receiving a RS, we
|
||||
* should delay the reply by a random value between 0 and 500ms timers.
|
||||
* stimers are in seconds, hence we cannot do this. Therefore we just send
|
||||
* the RA (setting the timer to 0 below). We keep the code logic for
|
||||
* the days contiki will support appropriate timers */
|
||||
rand_time = 0;
|
||||
PRINTF("Solicited RA, random time %u\n", rand_time);
|
||||
|
||||
if (stimer_remaining(&uip_ds6_timer_ra) > rand_time) {
|
||||
if (stimer_elapsed(&uip_ds6_timer_ra) < UIP_ND6_MIN_DELAY_BETWEEN_RAS) {
|
||||
/* Ensure that the RAs are rate limited */
|
||||
/* stimer_set(&uip_ds6_timer_ra, rand_time +
|
||||
UIP_ND6_MIN_DELAY_BETWEEN_RAS -
|
||||
stimer_elapsed(&uip_ds6_timer_ra));
|
||||
*/ } else {
|
||||
stimer_set(&uip_ds6_timer_ra, rand_time);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
void
|
||||
uip_ds6_send_ra_periodic(void) {
|
||||
if(racount > 0){
|
||||
/* send previously scheduled RA*/
|
||||
uip_nd6_ra_output(NULL);
|
||||
PRINTF("Sending periodic RA\n");
|
||||
}
|
||||
|
||||
rand_time = UIP_ND6_MIN_RA_INTERVAL + random_rand() %
|
||||
(uint16_t)(UIP_ND6_MAX_RA_INTERVAL - UIP_ND6_MIN_RA_INTERVAL);
|
||||
PRINTF("Random time 1 = %u\n", rand_time);
|
||||
|
||||
if(racount < UIP_ND6_MAX_INITIAL_RAS){
|
||||
if (rand_time > UIP_ND6_MAX_INITIAL_RA_INTERVAL){
|
||||
rand_time = UIP_ND6_MAX_INITIAL_RA_INTERVAL;
|
||||
PRINTF("Random time 2 = %u\n", rand_time);
|
||||
}
|
||||
racount++;
|
||||
}
|
||||
PRINTF("Random time 3 = %u\n", rand_time);
|
||||
stimer_set(&uip_ds6_timer_ra, rand_time);
|
||||
}
|
||||
|
||||
#endif /* UIP_ND6_SEND_RA */
|
||||
#else /* UIP_CONF_ROUTER */
|
||||
/*---------------------------------------------------------------------------*/
|
||||
void
|
||||
uip_ds6_send_rs(void) {
|
||||
if((uip_ds6_defrt_choose() == NULL) && (rscount < UIP_ND6_MAX_RTR_SOLICITATIONS)){
|
||||
PRINTF("Sending RS %u\n", rscount);
|
||||
uip_nd6_rs_output();
|
||||
rscount++;
|
||||
etimer_set(&uip_ds6_timer_rs, UIP_ND6_RTR_SOLICITATION_INTERVAL * CLOCK_SECOND);
|
||||
} else {
|
||||
PRINTF("Router found ? (boolean): %u\n", (uip_ds6_defrt_choose() != NULL));
|
||||
etimer_stop(&uip_ds6_timer_rs);
|
||||
}
|
||||
return;
|
||||
}
|
||||
|
||||
#endif /* UIP_CONF_ROUTER */
|
||||
/*---------------------------------------------------------------------------*/
|
||||
uint32_t
|
||||
uip_ds6_compute_reachable_time(void)
|
||||
{
|
||||
return (uint32_t)(UIP_ND6_MIN_RANDOM_FACTOR(uip_ds6_if.base_reachable_time)) +
|
||||
((uint16_t)(random_rand() << 8) + (uint16_t)random_rand()) %
|
||||
(uint32_t)(UIP_ND6_MAX_RANDOM_FACTOR(uip_ds6_if.base_reachable_time) -
|
||||
UIP_ND6_MIN_RANDOM_FACTOR(uip_ds6_if.base_reachable_time));
|
||||
}
|
||||
|
||||
|
||||
/** @} */
|
||||
|
|
@ -0,0 +1,369 @@
|
|||
/**
|
||||
* \addtogroup uip6
|
||||
* @{
|
||||
*/
|
||||
|
||||
/**
|
||||
* \file
|
||||
* Network interface and stateless autoconfiguration (RFC 4862)
|
||||
* \author Mathilde Durvy <mdurvy@cisco.com>
|
||||
* \author Julien Abeille <jabeille@cisco.com>
|
||||
*
|
||||
*/
|
||||
/*
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
||||
* 3. Neither the name of the Institute nor the names of its contributors
|
||||
* may be used to endorse or promote products derived from this software
|
||||
* without specific prior written permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
|
||||
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
*
|
||||
*/
|
||||
|
||||
#ifndef __UIP_DS6_H__
|
||||
#define __UIP_DS6_H__
|
||||
|
||||
#include "net/uip.h"
|
||||
#include "sys/stimer.h"
|
||||
|
||||
/*--------------------------------------------------*/
|
||||
/** Configuration. For all tables (Neighbor cache, Prefix List, Routing Table,
|
||||
* Default Router List, Unicast address list, multicast address list, anycast address list),
|
||||
* we define:
|
||||
* - the number of elements requested by the user in contiki configuration (name suffixed by _NBU)
|
||||
* - the number of elements assigned by the system (name suffixed by _NBS)
|
||||
* - the total number of elements is the sum (name suffixed by _NB)
|
||||
*/
|
||||
/* Neighbor cache */
|
||||
#define UIP_DS6_NBR_NBS 0
|
||||
#ifndef UIP_CONF_DS6_NBR_NBU
|
||||
#define UIP_DS6_NBR_NBU 4
|
||||
#else
|
||||
#define UIP_DS6_NBR_NBU UIP_CONF_DS6_NBR_NBU
|
||||
#endif
|
||||
#define UIP_DS6_NBR_NB UIP_DS6_NBR_NBS + UIP_DS6_NBR_NBU
|
||||
|
||||
/* Default router list */
|
||||
#define UIP_DS6_DEFRT_NBS 0
|
||||
#ifndef UIP_CONF_DS6_DEFRT_NBU
|
||||
#define UIP_DS6_DEFRT_NBU 2
|
||||
#else
|
||||
#define UIP_DS6_DEFRT_NBU UIP_CONF_DS6_DEFRT_NBU
|
||||
#endif
|
||||
#define UIP_DS6_DEFRT_NB UIP_DS6_DEFRT_NBS + UIP_DS6_DEFRT_NBU
|
||||
|
||||
/* Prefix list */
|
||||
#define UIP_DS6_PREFIX_NBS 1
|
||||
#ifndef UIP_CONF_DS6_PREFIX_NBU
|
||||
#define UIP_DS6_PREFIX_NBU 2
|
||||
#else
|
||||
#define UIP_DS6_PREFIX_NBU UIP_CONF_DS6_PREFIX_NBU
|
||||
#endif
|
||||
#define UIP_DS6_PREFIX_NB UIP_DS6_PREFIX_NBS + UIP_DS6_PREFIX_NBU
|
||||
|
||||
/* Routing table */
|
||||
#define UIP_DS6_ROUTE_NBS 0
|
||||
#ifndef UIP_CONF_DS6_ROUTE_NBU
|
||||
#define UIP_DS6_ROUTE_NBU 4
|
||||
#else
|
||||
#define UIP_DS6_ROUTE_NBU UIP_CONF_DS6_ROUTE_NBU
|
||||
#endif
|
||||
#define UIP_DS6_ROUTE_NB UIP_DS6_ROUTE_NBS + UIP_DS6_ROUTE_NBU
|
||||
|
||||
/* Unicast address list*/
|
||||
#define UIP_DS6_ADDR_NBS 1
|
||||
#ifndef UIP_CONF_DS6_ADDR_NBU
|
||||
#define UIP_DS6_ADDR_NBU 2
|
||||
#else
|
||||
#define UIP_DS6_ADDR_NBU UIP_CONF_DS6_ADDR_NBU
|
||||
#endif
|
||||
#define UIP_DS6_ADDR_NB UIP_DS6_ADDR_NBS + UIP_DS6_ADDR_NBU
|
||||
|
||||
/* Multicast address list */
|
||||
#if UIP_CONF_ROUTER
|
||||
#define UIP_DS6_MADDR_NBS 2 + UIP_DS6_ADDR_NB /* all routers + all nodes + one solicited per unicast */
|
||||
#else
|
||||
#define UIP_DS6_MADDR_NBS 1 + UIP_DS6_ADDR_NB /* all nodes + one solicited per unicast */
|
||||
#endif
|
||||
#ifndef UIP_CONF_DS6_MADDR_NBU
|
||||
#define UIP_DS6_MADDR_NBU 0
|
||||
#else
|
||||
#define UIP_DS6_MADDR_NBU UIP_CONF_DS6_MADDR_NBU
|
||||
#endif
|
||||
#define UIP_DS6_MADDR_NB UIP_DS6_MADDR_NBS + UIP_DS6_MADDR_NBU
|
||||
|
||||
/* Anycast address list */
|
||||
#if UIP_CONF_ROUTER
|
||||
#define UIP_DS6_AADDR_NBS UIP_DS6_PREFIX_NB - 1 /* One per non link local prefix (subnet prefix anycast address) */
|
||||
#else
|
||||
#define UIP_DS6_AADDR_NBS 0
|
||||
#endif
|
||||
#ifndef UIP_CONF_DS6_AADDR_NBU
|
||||
#define UIP_DS6_AADDR_NBU 0
|
||||
#else
|
||||
#define UIP_DS6_AADDR_NBU UIP_CONF_DS6_AADDR_NBU
|
||||
#endif
|
||||
#define UIP_DS6_AADDR_NB UIP_DS6_AADDR_NBS + UIP_DS6_AADDR_NBU
|
||||
|
||||
|
||||
/*--------------------------------------------------*/
|
||||
/** \brief Possible states for the nbr cache entries */
|
||||
#define NBR_INCOMPLETE 0
|
||||
#define NBR_REACHABLE 1
|
||||
#define NBR_STALE 2
|
||||
#define NBR_DELAY 3
|
||||
#define NBR_PROBE 4
|
||||
|
||||
/** \brief Possible states for the an address (RFC 4862) */
|
||||
#define ADDR_TENTATIVE 0
|
||||
#define ADDR_PREFERRED 1
|
||||
#define ADDR_DEPRECATED 2
|
||||
|
||||
/** \brief How the address was acquired: Autoconf, DHCP or manually */
|
||||
#define ADDR_ANYTYPE 0
|
||||
#define ADDR_AUTOCONF 1
|
||||
#define ADDR_DHCP 2
|
||||
#define ADDR_MANUAL 3
|
||||
|
||||
/** \brief General DS6 definitions */
|
||||
#define UIP_DS6_PERIOD (CLOCK_SECOND/10) /** Period for uip-ds6 periodic task*/
|
||||
#define FOUND 0
|
||||
#define FREESPACE 1
|
||||
#define NOSPACE 2
|
||||
|
||||
|
||||
/*--------------------------------------------------*/
|
||||
/** \brief An entry in the nbr cache */
|
||||
typedef struct uip_ds6_nbr {
|
||||
uint8_t isused;
|
||||
uip_ipaddr_t ipaddr;
|
||||
uip_lladdr_t lladdr;
|
||||
uint8_t isrouter;
|
||||
uint8_t state;
|
||||
struct stimer reachable;
|
||||
struct stimer sendns;
|
||||
uint8_t nscount;
|
||||
#if UIP_CONF_IPV6_QUEUE_PKT
|
||||
uint8_t queue_buf[UIP_BUFSIZE - UIP_LLH_LEN];
|
||||
uint8_t queue_buf_len;
|
||||
#endif /*UIP_CONF_QUEUE_PKT*/
|
||||
} uip_ds6_nbr;
|
||||
|
||||
/** \brief An entry in the default router list */
|
||||
typedef struct uip_ds6_defrt {
|
||||
uint8_t isused;
|
||||
uip_ipaddr_t ipaddr;
|
||||
struct stimer lifetime;
|
||||
} uip_ds6_defrt;
|
||||
|
||||
/** \brief A prefix list entry */
|
||||
#if UIP_CONF_ROUTER
|
||||
typedef struct uip_ds6_prefix {
|
||||
uint8_t isused;
|
||||
uip_ipaddr_t ipaddr;
|
||||
uint8_t length;
|
||||
uint8_t advertise;
|
||||
u32_t vlifetime;
|
||||
u32_t plifetime;
|
||||
uint8_t l_a_reserved; /**< on-link and autonomous flags + 6 reserved bits */
|
||||
} uip_ds6_prefix ;
|
||||
#else /* UIP_CONF_ROUTER */
|
||||
typedef struct uip_ds6_prefix {
|
||||
uint8_t isused;
|
||||
uip_ipaddr_t ipaddr;
|
||||
uint8_t length;
|
||||
struct stimer vlifetime;
|
||||
uint8_t isinfinite;
|
||||
} uip_ds6_prefix;
|
||||
#endif /*UIP_CONF_ROUTER*/
|
||||
|
||||
/** * \brief Unicast address structure */
|
||||
typedef struct uip_ds6_addr {
|
||||
uint8_t isused;
|
||||
uip_ipaddr_t ipaddr;
|
||||
uint8_t state;
|
||||
uint8_t type;
|
||||
uint8_t isinfinite;
|
||||
struct stimer vlifetime;
|
||||
struct timer dadtimer;
|
||||
uint8_t dadnscount;
|
||||
} uip_ds6_addr;
|
||||
|
||||
/** \brief Anycast address */
|
||||
typedef struct uip_ds6_aaddr {
|
||||
uint8_t isused;
|
||||
uip_ipaddr_t ipaddr;
|
||||
} uip_ds6_aaddr;
|
||||
|
||||
/** \brief A multicast address */
|
||||
typedef struct uip_ds6_maddr {
|
||||
uint8_t isused;
|
||||
uip_ipaddr_t ipaddr;
|
||||
} uip_ds6_maddr;
|
||||
|
||||
/** \brief An entry in the routing table */
|
||||
typedef struct uip_ds6_route {
|
||||
uint8_t isused;
|
||||
uip_ipaddr_t ipaddr;
|
||||
uint8_t length;
|
||||
uip_ipaddr_t nexthop;
|
||||
uint8_t metric;
|
||||
} uip_ds6_route;
|
||||
|
||||
/** \brief Interface structure (contains all the interface variables) */
|
||||
typedef struct uip_ds6_netif {
|
||||
uint32_t link_mtu;
|
||||
uint8_t cur_hop_limit;
|
||||
uint32_t base_reachable_time; /* in msec */
|
||||
uint32_t reachable_time; /* in msec */
|
||||
uint32_t retrans_timer; /* in msec */
|
||||
uint8_t maxdadns;
|
||||
uip_ds6_addr addr_list[UIP_DS6_ADDR_NB];
|
||||
uip_ds6_aaddr aaddr_list[UIP_DS6_AADDR_NB];
|
||||
uip_ds6_maddr maddr_list[UIP_DS6_MADDR_NB];
|
||||
} uip_ds6_netif;
|
||||
|
||||
/** \brief Generic type for a DS6, to use a common loop though all DS */
|
||||
typedef struct uip_ds6_element {
|
||||
uint8_t isused;
|
||||
uip_ipaddr_t ipaddr;
|
||||
} uip_ds6_element ;
|
||||
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
extern uip_ds6_netif uip_ds6_if;
|
||||
extern struct etimer uip_ds6_timer_periodic;
|
||||
#if UIP_CONF_ROUTER
|
||||
extern uip_ds6_prefix uip_ds6_prefix_list[UIP_DS6_PREFIX_NB];
|
||||
#else /* UIP_CONF_ROUTER */
|
||||
extern struct etimer uip_ds6_timer_rs;
|
||||
#endif /* UIP_CONF_ROUTER */
|
||||
|
||||
|
||||
/*---------------------------------------------------------------------------*/
|
||||
/** \brief Initialize data structures */
|
||||
void uip_ds6_init(void);
|
||||
|
||||
/** \brief Periodic processing of data structures */
|
||||
void uip_ds6_periodic(void);
|
||||
|
||||
/** \brief Generic loop routine on an abstract data structure, which generalizes
|
||||
* all data structures used in DS6 */
|
||||
uint8_t uip_ds6_list_loop(uip_ds6_element* list, uint8_t size, uint16_t elementsize, uip_ipaddr_t* ipaddr, uint8_t ipaddrlen, uip_ds6_element** out_element);
|
||||
|
||||
/** \name Neighbor Cache basic routines */
|
||||
/** @{ */
|
||||
uip_ds6_nbr* uip_ds6_nbr_add(uip_ipaddr_t *ipaddr, uip_lladdr_t *lladdr, uint8_t isrouter, uint8_t state);
|
||||
void uip_ds6_nbr_rm(uip_ds6_nbr* nbr);
|
||||
uip_ds6_nbr* uip_ds6_nbr_lookup(uip_ipaddr_t *ipaddr);
|
||||
/** @} */
|
||||
|
||||
/** \name Default router list basic routines */
|
||||
/** @{ */
|
||||
uip_ds6_defrt* uip_ds6_defrt_add(uip_ipaddr_t *ipaddr, unsigned long interval);
|
||||
void uip_ds6_defrt_rm(uip_ds6_defrt* defrt);
|
||||
uip_ds6_defrt* uip_ds6_defrt_lookup(uip_ipaddr_t *ipaddr);
|
||||
uip_ipaddr_t* uip_ds6_defrt_choose(void);
|
||||
/** @} */
|
||||
|
||||
/** \name Prefix list basic routines */
|
||||
/** @{ */
|
||||
#if UIP_CONF_ROUTER
|
||||
uip_ds6_prefix* uip_ds6_prefix_add(uip_ipaddr_t *ipaddr, uint8_t length, uint8_t advertise, uint8_t flags, unsigned long vtime, unsigned long ptime);
|
||||
#else /* UIP_CONF_ROUTER */
|
||||
uip_ds6_prefix* uip_ds6_prefix_add(uip_ipaddr_t *ipaddr, uint8_t length, unsigned long interval);
|
||||
#endif /* UIP_CONF_ROUTER */
|
||||
void uip_ds6_prefix_rm(uip_ds6_prefix* prefix);
|
||||
uip_ds6_prefix* uip_ds6_prefix_lookup(uip_ipaddr_t *ipaddr, uint8_t ipaddrlen);
|
||||
uint8_t uip_ds6_is_addr_onlink(uip_ipaddr_t *ipaddr);
|
||||
/** @} */
|
||||
|
||||
/** \name Unicast address list basic routines */
|
||||
/** @{ */
|
||||
uip_ds6_addr* uip_ds6_addr_add(uip_ipaddr_t *ipaddr, unsigned long vlifetime, uint8_t type);
|
||||
void uip_ds6_addr_rm(uip_ds6_addr *addr);
|
||||
uip_ds6_addr* uip_ds6_addr_lookup(uip_ipaddr_t* ipaddr);
|
||||
/** @} */
|
||||
|
||||
/** \name Multicast address list basic routines */
|
||||
/** @{ */
|
||||
uip_ds6_maddr* uip_ds6_maddr_add(uip_ipaddr_t *ipaddr);
|
||||
void uip_ds6_maddr_rm(uip_ds6_maddr *maddr);
|
||||
uip_ds6_maddr* uip_ds6_maddr_lookup(uip_ipaddr_t* ipaddr);
|
||||
/** @} */
|
||||
|
||||
/** \name Anycast address list basic routines */
|
||||
/** @{ */
|
||||
uip_ds6_aaddr* uip_ds6_aaddr_add(uip_ipaddr_t *ipaddr);
|
||||
void uip_ds6_aaddr_rm(uip_ds6_aaddr *aaddr);
|
||||
uip_ds6_aaddr* uip_ds6_aaddr_lookup(uip_ipaddr_t* ipaddr);
|
||||
/** @} */
|
||||
|
||||
|
||||
/** \name Routing Table basic routines */
|
||||
/** @{ */
|
||||
uip_ipaddr_t* uip_ds6_route_lookup(uip_ipaddr_t *destipaddr);
|
||||
uip_ds6_route* uip_ds6_route_add(uip_ipaddr_t *ipaddr, u8_t length, uip_ipaddr_t *next_hop, u8_t metric);
|
||||
void uip_ds6_route_rm(uip_ds6_route* route);
|
||||
/** @} */
|
||||
|
||||
/** \brief set the last 64 bits of an IP address based on the MAC address */
|
||||
void uip_ds6_set_addr_iid(uip_ipaddr_t *ipaddr, uip_lladdr_t *lladdr);
|
||||
|
||||
/** \brief Get the number of matching bits of two addresses */
|
||||
uint8_t get_match_length(uip_ipaddr_t *src, uip_ipaddr_t *dst);
|
||||
|
||||
/** \brief Perform Duplicate Address Selection on one address */
|
||||
void uip_ds6_dad(uip_ds6_addr* ifaddr);
|
||||
|
||||
/** \brief Callback when DAD failed */
|
||||
void uip_ds6_dad_failed(uip_ds6_addr* ifaddr);
|
||||
|
||||
/** \brief Source address selection, see RFC 3484 */
|
||||
void uip_ds6_select_src(uip_ipaddr_t *src, uip_ipaddr_t *dst);
|
||||
|
||||
#if UIP_CONF_ROUTER
|
||||
#if UIP_ND6_SEND_RA
|
||||
/** \brief Send a RA as an asnwer to a RS */
|
||||
void uip_ds6_send_ra_sollicited(void);
|
||||
|
||||
/** \brief Send a periodic RA */
|
||||
void uip_ds6_send_ra_periodic(void);
|
||||
#endif /* UIP_ND6_SEND_RA */
|
||||
#else /* UIP_CONF_ROUTER */
|
||||
/** \brief Send periodic RS to find router */
|
||||
void uip_ds6_send_rs(void);
|
||||
#endif /* UIP_CONF_ROUTER */
|
||||
|
||||
/** \brief Compute the reachable time based on base reachable time, see RFC 4861*/
|
||||
uint32_t uip_ds6_compute_reachable_time(void); /** \brief compute random reachable timer */
|
||||
|
||||
/** \name Macros to check if an IP address (unicast, multicast or anycast) is mine */
|
||||
/** @{ */
|
||||
#define uip_ds6_is_my_addr(addr) (uip_ds6_addr_lookup(addr) != NULL)
|
||||
#define uip_ds6_is_my_maddr(addr) (uip_ds6_maddr_lookup(addr) != NULL)
|
||||
#define uip_ds6_is_my_aaddr(addr) (uip_ds6_aaddr_lookup(addr) != NULL)
|
||||
/** @} */
|
||||
/** @} */
|
||||
|
||||
#endif /* __UIP_DS6_H__ */
|
||||
|
||||
|
|
@ -57,6 +57,7 @@
|
|||
#define UIP_ND6_INFINITE_LIFETIME 0xFFFFFFFF
|
||||
/** @} */
|
||||
|
||||
#define UIP_ND6_DEF_MAXDADNS 1
|
||||
|
||||
/** \name Configuration options */
|
||||
/** @{ */
|
||||
|
|
@ -82,12 +83,36 @@
|
|||
#define UIP_ND6_MAX_RTR_SOLICITATIONS 3
|
||||
/** @} */
|
||||
|
||||
/** \name RFC 4861 Router constants */
|
||||
/** @{ */
|
||||
#define UIP_ND6_SEND_RA 1 /* enable/disable RA sending */
|
||||
#define UIP_ND6_MAX_RA_INTERVAL 600
|
||||
#define UIP_ND6_MIN_RA_INTERVAL (UIP_ND6_MAX_RA_INTERVAL / 3)
|
||||
#define UIP_ND6_M_FLAG 0
|
||||
#define UIP_ND6_O_FLAG 0
|
||||
#define UIP_ND6_ROUTER_LIFETIME 3 * UIP_ND6_MAX_RA_INTERVAL
|
||||
|
||||
#define UIP_ND6_MAX_INITIAL_RA_INTERVAL 16 /*seconds*/
|
||||
#define UIP_ND6_MAX_INITIAL_RAS 3 /*transmissions*/
|
||||
#define UIP_ND6_MIN_DELAY_BETWEEN_RAS 3 /*seconds*/
|
||||
//#define UIP_ND6_MAX_RA_DELAY_TIME 0.5 /*seconds*/
|
||||
#define UIP_ND6_MAX_RA_DELAY_TIME_MS 500 /*milli seconds*/
|
||||
/** @} */
|
||||
|
||||
|
||||
/** \name RFC 4861 Node constant */
|
||||
#define UIP_ND6_MAX_MULTICAST_SOLICIT 3
|
||||
#define UIP_ND6_MAX_UNICAST_SOLICIT 3
|
||||
#ifdef UIP_CONF_ND6_REACHABLE_TIME
|
||||
#define UIP_ND6_REACHABLE_TIME UIP_CONF_ND6_REACHABLE_TIME
|
||||
#else
|
||||
#define UIP_ND6_REACHABLE_TIME 30000
|
||||
#endif
|
||||
#ifdef UIP_CONF_ND6_RETRANS_TIMER
|
||||
#define UIP_ND6_RETRANS_TIMER UIP_CONF_ND6_RETRANS_TIMER
|
||||
#else
|
||||
#define UIP_ND6_RETRANS_TIMER 1000
|
||||
#endif
|
||||
#define UIP_ND6_DELAY_FIRST_PROBE_TIME 5
|
||||
#define UIP_ND6_MIN_RANDOM_FACTOR(x) (x / 2)
|
||||
#define UIP_ND6_MAX_RANDOM_FACTOR(x) ((x) + (x) / 2)
|
||||
|
|
@ -145,6 +170,8 @@
|
|||
#define UIP_ND6_NA_FLAG_ROUTER 0x80
|
||||
#define UIP_ND6_NA_FLAG_SOLICITED 0x40
|
||||
#define UIP_ND6_NA_FLAG_OVERRIDE 0x20
|
||||
#define UIP_ND6_RA_FLAG_ONLINK 0x80
|
||||
#define UIP_ND6_RA_FLAG_AUTONOMOUS 0x40
|
||||
/** @} */
|
||||
|
||||
|
||||
|
|
@ -232,54 +259,54 @@ extern struct etimer uip_nd6_timer_periodic;
|
|||
*
|
||||
* Possible option is: SLLAO
|
||||
*/
|
||||
struct uip_nd6_ns {
|
||||
u32_t reserved;
|
||||
typedef struct uip_nd6_ns {
|
||||
uint32_t reserved;
|
||||
uip_ipaddr_t tgtipaddr;
|
||||
};
|
||||
} uip_nd6_ns;
|
||||
|
||||
/**
|
||||
* \brief A neighbor advertisement constant part.
|
||||
*
|
||||
* Possible option is: TLLAO
|
||||
*/
|
||||
struct uip_nd6_na {
|
||||
u8_t flagsreserved;
|
||||
u8_t reserved[3];
|
||||
typedef struct uip_nd6_na {
|
||||
uint8_t flagsreserved;
|
||||
uint8_t reserved[3];
|
||||
uip_ipaddr_t tgtipaddr;
|
||||
};
|
||||
} uip_nd6_na;
|
||||
|
||||
/**
|
||||
* \brief A router solicitation constant part
|
||||
*
|
||||
* Possible option is: SLLAO
|
||||
*/
|
||||
struct uip_nd6_rs {
|
||||
u32_t reserved;
|
||||
};
|
||||
typedef struct uip_nd6_rs {
|
||||
uint32_t reserved;
|
||||
} uip_nd6_rs;
|
||||
|
||||
/**
|
||||
* \brief A router advertisement constant part
|
||||
*
|
||||
* Possible options are: SLLAO, MTU, Prefix Information
|
||||
*/
|
||||
struct uip_nd6_ra {
|
||||
u8_t cur_ttl;
|
||||
u8_t flags_reserved;
|
||||
u16_t router_lifetime;
|
||||
u32_t reachable_time;
|
||||
u32_t retrans_timer;
|
||||
};
|
||||
typedef struct uip_nd6_ra {
|
||||
uint8_t cur_ttl;
|
||||
uint8_t flags_reserved;
|
||||
uint16_t router_lifetime;
|
||||
uint32_t reachable_time;
|
||||
uint32_t retrans_timer;
|
||||
} uip_nd6_ra;
|
||||
|
||||
/**
|
||||
* \brief A redirect message constant part
|
||||
*
|
||||
* Possible options are: TLLAO, redirected header
|
||||
*/
|
||||
struct uip_nd6_redirect {
|
||||
u32_t reserved;
|
||||
typedef struct uip_nd6_redirect {
|
||||
uint32_t reserved;
|
||||
uip_ipaddr_t tgtipaddress;
|
||||
uip_ipaddr_t destipaddress;
|
||||
};
|
||||
} uip_nd6_redirect;
|
||||
/** @} */
|
||||
|
||||
/**
|
||||
|
|
@ -288,44 +315,44 @@ struct uip_nd6_redirect {
|
|||
*/
|
||||
|
||||
/** \brief ND option header */
|
||||
struct uip_nd6_opt_hdr {
|
||||
u8_t type;
|
||||
u8_t len;
|
||||
};
|
||||
typedef struct uip_nd6_opt_hdr {
|
||||
uint8_t type;
|
||||
uint8_t len;
|
||||
} uip_nd6_opt_hdr;
|
||||
|
||||
/** \brief ND option prefix information */
|
||||
struct uip_nd6_opt_prefix_info {
|
||||
u8_t type;
|
||||
u8_t len;
|
||||
u8_t preflen;
|
||||
u8_t flagsreserved1;
|
||||
u32_t validlt;
|
||||
u32_t preferredlt;
|
||||
u32_t reserved2;
|
||||
typedef struct uip_nd6_opt_prefix_info {
|
||||
uint8_t type;
|
||||
uint8_t len;
|
||||
uint8_t preflen;
|
||||
uint8_t flagsreserved1;
|
||||
uint32_t validlt;
|
||||
uint32_t preferredlt;
|
||||
uint32_t reserved2;
|
||||
uip_ipaddr_t prefix;
|
||||
};
|
||||
} uip_nd6_opt_prefix_info ;
|
||||
|
||||
/** \brief ND option MTU */
|
||||
struct uip_nd6_opt_mtu {
|
||||
u8_t type;
|
||||
u8_t len;
|
||||
u16_t reserved;
|
||||
u32_t mtu;
|
||||
};
|
||||
typedef struct uip_nd6_opt_mtu {
|
||||
uint8_t type;
|
||||
uint8_t len;
|
||||
uint16_t reserved;
|
||||
uint32_t mtu;
|
||||
} uip_nd6_opt_mtu;
|
||||
|
||||
/** \brief ND option: both TLLAO and SLLAO */
|
||||
struct uip_nd6_opt_llao {
|
||||
u8_t type;
|
||||
u8_t len;
|
||||
typedef struct uip_nd6_opt_llao {
|
||||
uint8_t type;
|
||||
uint8_t len;
|
||||
uip_lladdr_t addr;
|
||||
};
|
||||
} uip_nd6_opt_llao;
|
||||
|
||||
/** \struct Redirected header option */
|
||||
struct uip_nd6_opt_redirected_hdr {
|
||||
u8_t type;
|
||||
u8_t len;
|
||||
u8_t reserved[6];
|
||||
};
|
||||
typedef struct uip_nd6_opt_redirected_hdr {
|
||||
uint8_t type;
|
||||
uint8_t len;
|
||||
uint8_t reserved[6];
|
||||
} uip_nd6_opt_redirected_hdr;
|
||||
/** @} */
|
||||
|
||||
/**
|
||||
|
|
@ -495,6 +522,23 @@ uip_nd6_io_ns_output(uip_ipaddr_t *src, uip_ipaddr_t *dest, uip_ipaddr_t *tgt);
|
|||
void
|
||||
uip_nd6_io_na_input(void);
|
||||
|
||||
#if UIP_CONF_ROUTER
|
||||
#if UIP_ND6_SEND_RA
|
||||
/**
|
||||
* \brief Process a Router Solicitation
|
||||
*
|
||||
*/
|
||||
void uip_nd6_rs_input(void);
|
||||
|
||||
/**
|
||||
* \brief send a Router Advertisement
|
||||
*
|
||||
* Only for router, for periodic as well as sollicited RA
|
||||
*/
|
||||
void uip_nd6_ra_output(uip_ipaddr_t *dest);
|
||||
#endif /* UIP_ND6_SEND_RA */
|
||||
#endif /*UIP_CONF_ROUTER*/
|
||||
|
||||
/**
|
||||
* \brief Send a Router Solicitation
|
||||
*
|
||||
|
|
|
|||
|
|
@ -47,7 +47,7 @@
|
|||
*
|
||||
* This file is part of the uIP TCP/IP stack.
|
||||
*
|
||||
* $Id: uip.h,v 1.25 2009/11/12 14:05:42 joxe Exp $
|
||||
* $Id: uip.h,v 1.26 2010/03/12 16:19:19 joxe Exp $
|
||||
*
|
||||
*/
|
||||
|
||||
|
|
@ -1971,6 +1971,12 @@ CCIF extern uip_lladdr_t uip_lladdr;
|
|||
|
||||
/** \brief set IP address a to the link local all-routers multicast address */
|
||||
#define uip_create_linklocal_allrouters_mcast(a) uip_ip6addr(a, 0xff02, 0, 0, 0, 0, 0, 0, 0x0002)
|
||||
#define uip_create_linklocal_prefix(addr) do { \
|
||||
(addr)->u16[0] = HTONS(0xfe80); \
|
||||
(addr)->u16[1] = 0; \
|
||||
(addr)->u16[2] = 0; \
|
||||
(addr)->u16[3] = 0; \
|
||||
} while(0)
|
||||
|
||||
/**
|
||||
* \brief is addr (a) a solicited node multicast address, see RFC3513
|
||||
|
|
@ -2077,6 +2083,15 @@ CCIF extern uip_lladdr_t uip_lladdr;
|
|||
(((a)->u8[15]) == 2))
|
||||
|
||||
|
||||
/**
|
||||
* \brief are last three bytes of both addresses equal?
|
||||
* This is used to compare solicited node multicast addresses
|
||||
*/
|
||||
#define uip_are_solicited_bytes_equal(a, b) \
|
||||
((((a)->u8[13]) == ((b)->u8[13])) && \
|
||||
(((a)->u8[14]) == ((b)->u8[14])) && \
|
||||
(((a)->u8[15]) == ((b)->u8[15])))
|
||||
|
||||
#endif /*UIP_CONF_IPV6*/
|
||||
|
||||
/**
|
||||
|
|
|
|||
Loading…
Reference in New Issue