154 lines
4.8 KiB
C
154 lines
4.8 KiB
C
/*
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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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* This file is part of the Contiki operating system.
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*
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*/
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/**
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* \file
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* border-router
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* \author
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* Niclas Finne <nfi@sics.se>
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* Joakim Eriksson <joakime@sics.se>
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* Nicolas Tsiftes <nvt@sics.se>
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*/
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#include "contiki.h"
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#include "contiki-lib.h"
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#include "contiki-net.h"
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#include "net/ipv6/uip.h"
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#include "net/ipv6/uip-ds6.h"
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#include "rpl.h"
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#if UIP_CONF_IPV6_RPL_LITE == 0
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#include "rpl-private.h"
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#endif /* UIP_CONF_IPV6_RPL_LITE == 0 */
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#include "rpl-dag-root.h"
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#if RPL_WITH_NON_STORING
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#include "rpl-ns.h"
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#endif /* RPL_WITH_NON_STORING */
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#include "net/netstack.h"
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#include "dev/button-sensor.h"
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#include "dev/slip.h"
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#include "net/ipv6/uip-debug.h"
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/*---------------------------------------------------------------------------*/
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/* Log configuration */
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#include "sys/log.h"
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#define LOG_MODULE "BR"
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#define LOG_LEVEL LOG_LEVEL_INFO
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/*---------------------------------------------------------------------------*/
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static uip_ipaddr_t prefix;
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static uint8_t prefix_set;
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/*---------------------------------------------------------------------------*/
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PROCESS(border_router_process, "Border router process");
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/*---------------------------------------------------------------------------*/
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static void
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print_local_addresses(void)
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{
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int i;
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uint8_t state;
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LOG_INFO("Server IPv6 addresses:\n");
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for(i = 0; i < UIP_DS6_ADDR_NB; i++) {
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state = uip_ds6_if.addr_list[i].state;
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if(uip_ds6_if.addr_list[i].isused &&
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(state == ADDR_TENTATIVE || state == ADDR_PREFERRED)) {
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LOG_INFO(" ");
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LOG_INFO_6ADDR(&uip_ds6_if.addr_list[i].ipaddr);
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LOG_INFO_("\n");
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}
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}
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}
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/*---------------------------------------------------------------------------*/
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void
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request_prefix(void)
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{
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/* mess up uip_buf with a dirty request... */
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uip_buf[0] = '?';
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uip_buf[1] = 'P';
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uip_len = 2;
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slip_send();
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uip_clear_buf();
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}
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/*---------------------------------------------------------------------------*/
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void
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set_prefix_64(uip_ipaddr_t *prefix_64)
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{
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memcpy(&prefix, prefix_64, 16);
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prefix_set = 1;
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rpl_dag_root_init(prefix_64, NULL);
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rpl_dag_root_init_dag_immediately();
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}
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/*---------------------------------------------------------------------------*/
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PROCESS_THREAD(border_router_process, ev, data)
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{
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static struct etimer et;
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PROCESS_BEGIN();
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/* While waiting for the prefix to be sent through the SLIP connection, the future
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* border router can join an existing DAG as a parent or child, or acquire a default
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* router that will later take precedence over the SLIP fallback interface.
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* Prevent that by turning the radio off until we are initialized as a DAG root.
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*/
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prefix_set = 0;
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NETSTACK_MAC.off();
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PROCESS_PAUSE();
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SENSORS_ACTIVATE(button_sensor);
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LOG_INFO("RPL-Border router started\n");
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/* Request prefix until it has been received */
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while(!prefix_set) {
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etimer_set(&et, CLOCK_SECOND);
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request_prefix();
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PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&et));
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LOG_INFO("Waiting for prefix\n");
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}
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NETSTACK_MAC.on();
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#if DEBUG || 1
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print_local_addresses();
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#endif
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while(1) {
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PROCESS_YIELD();
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if (ev == sensors_event && data == &button_sensor) {
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LOG_INFO("Initiating global repair\n");
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#if UIP_CONF_IPV6_RPL_LITE
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rpl_global_repair();
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#else
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rpl_repair_root(RPL_DEFAULT_INSTANCE);
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#endif
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}
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}
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PROCESS_END();
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}
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/*---------------------------------------------------------------------------*/
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