You guys can help me.

You can take a look at it for me-Linux general technology-Linux programming and kernel information. The following is a detailed description. It's okay to compile with gcc, but the results are incorrect during running. Let me see what went wrong.

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Int count;
Void set_timer (int interval) {/* set the timing interval */

Struct itimerval itv, oldtv;
Itv. it_interval. TV _sec = interval;
Itv. it_interval. TV _usec = 0;
Itv. it_value. TV _sec = interval;
Itv. it_value. TV _usec = 0;
Setitimer (ITIMER_REAL, & itv, & oldtv );
}
Void time_handle ()
{
Printf ("bandwidth is % d \ n", count );
Count = 0;

}



Int main ()
{
Int sock;
Struct ifreq ifstruct;
Struct sockaddr_ll sll;
Struct sockaddr_in addr;
Char buf [2000];
Int r;
Int len;
Len = sizeof (addr );
If (sock = socket (AF_PACKET, SOCK_RAW, htons (ETH_P_IPV6) =-1) // create a socket
{
}
Sll. sll_family = PF_PACKET;
Sll. sll_protocol = htons (ETH_P_IPV6 );
Strcpy (ifstruct. ifr_name, "eth0 ");
Ioctl (sock, SIOCGIFINDEX, & ifstruct );
Sll. sll_ifindex = ifstruct. ifr_ifindex;
Bind (sock, (struct sockaddr *) & sll, sizeof (struct sockaddr_ll ));
Signal (SIGALRM, time_handle );
Set_timer (1 );
Count = 0;
For (;;)
{
R = recvfrom (sock, (char *) buf, sizeof (buf), 0, (struct sockaddr *) & addr, & len );
Count + = r;
}
}

[ This post was last edited by liuke19851220]