FIONBIO support in freebsd for bpf

[dayanidhi sreenivasan]

Hi Guys,
Can somebody tell me why there is no support for non blocking IO for bpf yet?

static  int
bpfioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flags,
    struct thread *td)
{

......

 case FIONBIO:       /* Non-blocking I/O */
        break;

}

Thanks
Daya