MWL_TX_RING_COUNT
ring->cur = (ring->cur + 1) % MWL_TX_RING_COUNT;
ring->next = (ring->next + 1) % MWL_TX_RING_COUNT;
(ring->queued < MWL_TX_RING_COUNT)) {
&sc->sc_txring[qid], MWL_TX_RING_COUNT);
&sc->sc_txring[qid], MWL_TX_RING_COUNT);
sc->sc_hwdma.maxNumTxWcb = MWL_TX_RING_COUNT;
for (i = 0; i < MWL_TX_RING_COUNT - 1; i++) {