wil_ring_used_tx
used = wil_ring_used_tx(vring);
used = wil_ring_used_tx(ring);
used_before_complete = wil_ring_used_tx(vring);
used_new = wil_ring_used_tx(vring);
return ring->size - wil_ring_used_tx(ring) - 1;
used_before_complete = wil_ring_used_tx(ring);
used_new = wil_ring_used_tx(ring);
used = wil_ring_used_tx(ring);