hi ,

yeah i m binding the interface en0.
the earlier call to ioctl using parameters BIOCSETIF and BIOCIMMEDIATE returns a success.
but the next call using BIOCPROMISC as one of the parameters fails.

On another note, we've just recently updated the wiki pages / docs to
indicate that you should use "ioctl_socket" instead of "ioctl" when
using BPF.  The support for the ioctl is included with the stack (see
the bpf.c:bpf_ioctl in trunk/sys/net/bpf.c).

	Robert.

-----Original Message-----
From: Dennis Kellly [mailto:community-noreply@qnx.com] 
Sent: Tuesday, January 27, 2009 9:40 AM
To: technology-networking
Subject: Re: BPF promiscuous mode

Did you try to bind the interface before the ioctl?

struct ifreq reader_if;
char if_name[128];

...
  strcpy( if_name, "en0" );

  // bind interface
  strcpy( reader_if.ifr_name, if_name );
  if ( ioctl( bpffd, BIOCSETIF, &reader_if ) )
  {
    printf( "error: bpf setif ioctl error %d\n", errno );
    close( bpffd );
    return -2;
  }

  if ( opt_promiscuous )
  {
	  if ( ioctl( bpffd, BIOCPROMISC, NULL ) == -1 )
	  {
	    printf( "error: bpf promiscuous ioctl error %d\n", errno );
	    close( bpffd );
	    return -3;
	  }
  }
   


_______________________________________________
Technology
http://community.qnx.com/sf/go/post20838