c276081150
This patch adds a process that is started automatically to request DHCP configuration. It also moves the IP configuration ahead of autostart processes in case some autostart process depends on the IP configuration.
126 lines
4.1 KiB
C
126 lines
4.1 KiB
C
/*
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* Copyright (C) 2015-2016, Intel Corporation. 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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*
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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 "eth-conf.h"
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#include <stdio.h>
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#include "net/eth-proc.h"
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#include "contiki-net.h"
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#include "net/ip/dhcpc.h"
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#include "net/linkaddr.h"
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#if NETSTACK_CONF_WITH_IPV6
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const linkaddr_t linkaddr_null = { { 0, 0, 0, 0, 0, 0 } };
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#else
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/* 192.0.2.0/24 is a block reserved for documentation by RFC 5737. */
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#define SUBNET_IP 192, 0, 2
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#define NETMASK_IP 255, 255, 255, 0
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#define HOST_IP SUBNET_IP, 2
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#define GATEWAY_IP SUBNET_IP, 1
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#define NAMESERVER_IP GATEWAY_IP
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#endif
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PROCESS(dhcp_process, "DHCP");
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/*---------------------------------------------------------------------------*/
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void
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eth_init(void)
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{
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#if !NETSTACK_CONF_WITH_IPV6
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uip_ipaddr_t ip_addr;
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#define SET_IP_ADDR(x) \
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uip_ipaddr(&ip_addr, x)
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SET_IP_ADDR(HOST_IP);
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uip_sethostaddr(&ip_addr);
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SET_IP_ADDR(NETMASK_IP);
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uip_setnetmask(&ip_addr);
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SET_IP_ADDR(GATEWAY_IP);
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uip_setdraddr(&ip_addr);
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#if WITH_DNS
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SET_IP_ADDR(NAMESERVER_IP);
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uip_nameserver_update(&ip_addr, UIP_NAMESERVER_INFINITE_LIFETIME);
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#endif
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#endif
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process_start(ð_process, NULL);
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/* Comment out the following line to disable DHCP and simply use the static
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* IP configuration setup above.
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*/
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process_start(&dhcp_process, NULL);
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}
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/*---------------------------------------------------------------------------*/
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PROCESS_THREAD(dhcp_process, ev, data)
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{
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PROCESS_BEGIN();
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dhcpc_init(uip_lladdr.addr, sizeof(uip_lladdr.addr));
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printf("Requesting DHCP configuration...\n");
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dhcpc_request();
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while(1) {
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PROCESS_WAIT_EVENT();
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if(ev == tcpip_event || ev == PROCESS_EVENT_TIMER) {
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dhcpc_appcall(ev, data);
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} else if(ev == PROCESS_EVENT_EXIT) {
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process_exit(&dhcp_process);
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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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void
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dhcpc_configured(const struct dhcpc_state *s)
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{
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uip_sethostaddr(&s->ipaddr);
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uip_setnetmask(&s->netmask);
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uip_setdraddr(&s->default_router);
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uip_nameserver_update(&s->dnsaddr, UIP_NAMESERVER_INFINITE_LIFETIME);
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printf("DHCP configured:\n");
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printf(" - Host IP: %d.%d.%d.%d\n", uip_ipaddr_to_quad(&s->ipaddr));
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printf(" - Netmask: %d.%d.%d.%d\n", uip_ipaddr_to_quad(&s->netmask));
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printf(" - Default router: %d.%d.%d.%d\n",
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uip_ipaddr_to_quad(&s->default_router));
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printf(" - DNS server: %d.%d.%d.%d\n", uip_ipaddr_to_quad(&s->dnsaddr));
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}
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/*---------------------------------------------------------------------------*/
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void
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dhcpc_unconfigured(const struct dhcpc_state *s)
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{
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printf("DHCP unconfigured.\n");
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}
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/*---------------------------------------------------------------------------*/
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