15f6e1d7a3
This commit changes the method of accessing the default v6 prefix. Instead of always using `UIP_DS6_DEFAULT_PREFIX`, we store the default prefix in a variable. We subsequently retrieve the prefix by calling `uip_ds6_default_prefix()`. `uip_ds6_init()` will set this variable to the value of `UIP_DS6_DEFAULT_PREFIX`, but only if the startup code has not set a different default prefix before `uip_ds6_init()` gets called. This approach has the following benefits: * It allows us to change the default prefix at run time. * It allows the startup code to set a prefix different than the one specified by `UIP_DS6_DEFAULT_PREFIX`, which can be useful if the default prefix comes from a different source (e.g. the command line for native, or a configuration stored on a node's flash) * In many places the current code assumes that the prefix contains 6 bytes of zeros (e.g. `FDxx::/64`). Changing to a different prefix (e.g. `FD00:ABCD::`) would need extensive code changes. This change here makes it easy to use a prefix of any length.
85 lines
2.8 KiB
C
85 lines
2.8 KiB
C
/*
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* Copyright (c) 2016, Yasuyuki Tanaka
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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 copyright holder nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* 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,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <contiki.h>
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#include <net/mac/tsch/tsch.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 <serial-shell.h>
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#include <stdio.h>
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PROCESS(node_process, "Node");
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AUTOSTART_PROCESSES(&node_process);
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PROCESS_THREAD(node_process, ev, data)
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{
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static struct etimer et;
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#if WITH_ULA
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static uip_ipaddr_t ipaddr;
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const uip_ipaddr_t *default_prefix;
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#endif /* WITH_ULA */
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#if WITH_TSCH
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static linkaddr_t coordinator_addr = {{0x00, 0x01, 0x00, 0x01,
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0x00, 0x01, 0x00, 0x01}};
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#endif /* WITH_TSCH */
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PROCESS_BEGIN();
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#if WITH_TSCH
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if(linkaddr_cmp(&coordinator_addr, &linkaddr_node_addr)) {
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tsch_set_coordinator(1);
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}
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#endif /* WITH_TSCH */
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#if WITH_ULA
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default_prefix = uip_ds6_default_prefix();
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uip_ip6addr_copy(&ipaddr, default_prefix);
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uip_ds6_prefix_add(&ipaddr, UIP_DEFAULT_PREFIX_LEN, 0, 0, 0, 0);
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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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#endif /* WITH_ULA */
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serial_shell_init();
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etimer_set(&et, CLOCK_SECOND);
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while(1) {
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/*
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* keep doing something so that simulation runs until its timeout
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*/
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PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&et));
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printf(".\n");
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etimer_reset(&et);
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}
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PROCESS_END();
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}
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