[ale] Help on eth0 config.

[Joe Steele]

Are you sure you are wanting to set SIOCSIFDSTADDR, 
and not SIOCSIFADDR instead?

I think SIOCSIFDSTADDR may be setting the destination 
address of PPP interfaces.

--Joe

-----Original Message-----
From:	Chris Fowler [SMTP:cfowler at outpostsentinel.com]
Sent:	Tuesday, December 18, 2001 1:36 PM
To:	ale at ale.org
Subject:	[ale] Help on eth0 config.

My understanding on these things are bleak.    I'm having a problem with this section of code.  When I set the destination address, I get
can bind address.  ip2sip is a function that converts my 32bit stored number to a string of "A.B.C.D"    My problem could be in INET_Resolv.


void
do_net(void)
{
        struct ifreq ifr;
        struct sockaddr_in sa;
        struct sockaddr sa2;
        char host[128];
        int sockfd;


        /* Create a channel to the NET kernel. */
        if ((sockfd = socket(AF_INET, SOCK_DGRAM, 0)) == -1)
                err_quit("create socket");


        bzero(&ifr, sizeof(struct ifreq));

        strcpy(ifr.ifr_name, INTERFACE);

        ifr.ifr_flags |= (IFF_UP | IFF_RUNNING);
        if (ioctl(sockfd, SIOCSIFFLAGS, &ifr) == -1)
                perror("SIOCSIFFLAGS");


        /* Destination */
        INET_resolve((char *)ip2sip(cfg.ip), &sa);
        memcpy((char *)&ifr.ifr_dstaddr, (char *)&sa, SOCKSIZE);
        if(ioctl(sockfd, SIOCSIFDSTADDR, &ifr) == -1)
                err_quit("SIOCSIFDSTADDR");

        /* Netmask */
        INET_resolve((char *)ip2sip(cfg.nm), &sa);
        memcpy((char *)&ifr.ifr_netmask, (char *)&sa, SOCKSIZE);
        if(ioctl(sockfd, SIOCSIFNETMASK, &ifr) == -1)
                err_quit("SIOCSIFNETMASK");

        /* Set broadcast address */
        INET_resolve((char *)ip2sip(cfg.br), &sa);
        memcpy((char *)&ifr.ifr_broadaddr, (char *)&sa, SOCKSIZE);
        if(ioctl(sockfd,SIOCSIFBRDADDR, &ifr) == -1)
               err_quit("SIOCSIFBRDADDR");

        /* Network should be functionla
         * We need to set the system hostmane!
         */

        set_host_name();

        return;
                                                                          
}

void
INET_resolve(char *host, struct sockaddr_in *sin)
{
        sin->sin_family = AF_INET;
        sin->sin_port = 0;

       // Convert "A.B.C.D to network address.
        inet_aton(host, &sin->sin_addr);

        return;
}



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