BPF_WAITING
if (d->bd_state == BPF_WAITING)
d->bd_state = BPF_WAITING;
d->bd_state = BPF_WAITING;
if (d->bd_state == BPF_WAITING)
if (d->bd_state == BPF_WAITING)
if (d->bd_state == BPF_WAITING) {
if (d->bd_state == BPF_WAITING) {