150 lines
4.6 KiB
C
150 lines
4.6 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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#include "contiki.h"
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#include "contiki-lib.h"
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#include "contiki-net.h"
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#include <string.h>
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#define DEBUG DEBUG_PRINT
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#include "net/uip-debug.h"
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#include "net/rpl/rpl.h"
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#include "dev/watchdog.h"
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#include "dev/slip.h"
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#include "dev/leds.h"
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#include "dev/cc2430_rf.h"
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#include "debug.h"
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static uint8_t prefix_set;
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#if DEBUG
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#define PUTSTRING(...) putstring(__VA_ARGS__)
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#define PUTHEX(...) puthex(__VA_ARGS__)
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#define PUTBIN(...) putbin(__VA_ARGS__)
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#define PUTDEC(...) putdec(__VA_ARGS__)
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#define PUTCHAR(...) putchar(__VA_ARGS__)
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#else
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#define PUTSTRING(...)
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#define PUTHEX(...)
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#define PUTBIN(...)
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#define PUTDEC(...)
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#define PUTCHAR(...)
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#endif
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/*---------------------------------------------------------------------------*/
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PROCESS(border_router_process, "Border Router process");
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AUTOSTART_PROCESSES(&border_router_process);
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/*---------------------------------------------------------------------------*/
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static void
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print_local_addresses(void) CC_NON_BANKED
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{
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int i;
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uint8_t state;
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PUTSTRING("Router's 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 && (state == ADDR_TENTATIVE || state
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== ADDR_PREFERRED)) {
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PUTSTRING(" ");
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PRINT6ADDR(&uip_ds6_if.addr_list[i].ipaddr);
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PUTCHAR('\n');
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if (state == ADDR_TENTATIVE) {
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uip_ds6_if.addr_list[i].state = ADDR_PREFERRED;
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}
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}
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}
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}
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/*---------------------------------------------------------------------------*/
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static void
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request_prefix(void) CC_NON_BANKED
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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_len = 0;
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}
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/*---------------------------------------------------------------------------*/
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/* Set our prefix when we receive one over SLIP */
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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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rpl_dag_t *dag;
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uip_ipaddr_t ipaddr;
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memcpy(&ipaddr, prefix_64, 16);
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prefix_set = 1;
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uip_ds6_set_addr_iid(&ipaddr, &uip_lladdr);
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uip_ds6_addr_add(&ipaddr, 0, ADDR_AUTOCONF);
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/* Become root of a new DODAG with ID our global v6 address */
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dag = rpl_set_root(RPL_DEFAULT_INSTANCE, &ipaddr);
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if(dag != NULL) {
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rpl_set_prefix(dag, &ipaddr, 64);
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PUTSTRING("Created a new RPL dag with ID: ");
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PRINT6ADDR(&dag->dag_id);
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PUTCHAR('\n');
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}
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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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PUTSTRING("Border Router started\n");
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prefix_set = 0;
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leds_on(LEDS_RED);
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/* Request prefix until it has been received */
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while(!prefix_set) {
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leds_on(LEDS_GREEN);
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PUTSTRING("Prefix request.\n");
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etimer_set(&et, CLOCK_SECOND);
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request_prefix();
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leds_off(LEDS_GREEN);
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PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&et));
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}
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/* We have created a new DODAG when we reach here */
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PUTSTRING("On Channel ");
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PUTDEC(cc2430_rf_channel_get());
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PUTCHAR('\n');
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print_local_addresses();
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leds_off(LEDS_RED);
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PROCESS_EXIT();
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PROCESS_END();
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}
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/*---------------------------------------------------------------------------*/
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