ethernetstart.c

lwIP-Softools-11Jul2002-alpha

/*
 * Functions to start the ethernet system.
 *
 * (C) 2002 Compendium Technologies, Inc.
 * (C) 2002 Softools, Inc.
 * All rights reserved.
 *
 * This software is the proprietary information of Compendium Technologies, Inc.
 * and Softools, Inc. Use is subject to license terms.
 */
#include <Rabbit2000.h>
#include <stdlib.h>
#include <stdarg.h>

#include <rabbitlwip.h>
#include "dns.h"
#include "RTK8019AS.h"
#include "lwip/netif.h"
#include "lwip/api_msg.h"

extern unsigned char netInited;

#define DEBUG

/*
 * Flag helps us avoid stepping on configurations that are already set up
 */
unsigned char _ethInitialized = 0;

static void _nearcall
ethernetTimer(void *arg)
{
#ifdef TIMER_DEBUG
    puts("|");
#endif
    tcp_tmr();
    sys_timeout(TCP_TMR_INTERVAL, (sys_timeout_handler) ethernetTimer, NULL);
}

/*
 * Start an ethernet interface, initialize arp and dns.
 * prerequisite: netRecognize().
 */
int ethernetStart(NetConnectionConfig *config, ...)
{
    //int retValue;
    va_list ap;
    char *nameserver;

    ipset3();
    if (_ethInitialized)
        return 0;

    // Initialize TCP/UDP/IP system
    // Alternative in threaded environment is to call tcpip_init() to do this

    if (!netInited)
    {
       netInit();
    }

    ip_init();  // From tcpip_thread
    udp_init(); // From tcpip_thread
    tcp_init(); // From tcpip_thread
    arp_init();


    // Need to initialize timeouts as well
    sys_timeout(TCP_TMR_INTERVAL, (sys_timeout_handler)ethernetTimer, NULL);

    // Initialize the packet driver and the TCP/IP stack constructs
    // This also zeros out things like the name server list
    //netif_add();    
    //retValue = tcp_init_noexit(); /* Must precede configuration */
    //if (retValue)
    //    return retValue;
    _ethInitialized = 1;
    ipres();

    if (config == NULL)
    {
#ifdef DEBUG
        printf("doing DHCP init\n");
#endif
        /* DHCP/BOOTP initialization */
        // TODO: DHCP
        // if (!dhcp_enable())
        // {
        //     shutdown();
        //     _ethInitialized = 0;
        //     return 3;
        // }
        _ethInitialized = 0;
        return 3;
    }
    else
    {
        struct netif * interface;
#ifdef DEBUG
        printf("doing static IP init\n");
#endif
        /* Static IP initialization */
       
        interface = netif_add(&config->address,
                              &config->netmask,
                              &configuration.defaultGateway,
                              RTK8019AS_if_init,
                              ip_input);
        netif_set_default(interface);
    }

    // Swap it once and store so we don't have to do this again.
    //interfaceStats[0].swappedIpAddress = intel(my_ip_addr);

    // Get the list of DNS servers (if there are any) in the variable length
    // argument list.
    va_start(ap, config);
    nameserver = va_arg(ap, char *);
    while(nameserver != NULL)
    {
        struct ip_addr nsip;
#ifdef DEBUG
        printf("adding nameserver\n");
#endif
        if (netStringToIP(nameserver, &nsip))
        {
            dnsAddServer(&nsip);
        }
        nameserver = va_arg(ap, char *);
    }

    return 0;
}