for (i = 0; i < nb_used; i++) {
used_idx = vq->vq_used_cons_idx & (vq->vq_nentries - 1);
uep = &vq->vq_split.ring.used->ring[used_idx];
for (i = 0; i < nb_used; i++) {
used_idx = vq->vq_used_cons_idx & (vq->vq_nentries - 1);
uep = &vq->vq_split.ring.used->ring[used_idx];