BWI_TX_DATA_RING
struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
struct bwi_ring_data *rd = &sc->sc_tx_rdata[BWI_TX_DATA_RING];
struct bwi_txbuf_data *tbd = &sc->sc_tx_bdata[BWI_TX_DATA_RING];
hdr->txh_id = __SHIFTIN(BWI_TX_DATA_RING, BWI_TXH_ID_RING_MASK) |
sc->sc_bounce_tx_data[BWI_TX_DATA_RING] +
KASSERT(ring_idx == BWI_TX_DATA_RING);