em_tx_desc
struct em_tx_desc *desc;
struct em_tx_desc *tx_desc;
(sizeof(struct em_tx_desc)) * sc->sc_tx_slots);
sizeof(struct em_tx_desc));
struct em_tx_desc *desc;
struct em_tx_desc *txd;
if (em_dma_malloc(sc, sc->sc_tx_slots * sizeof(struct em_tx_desc),
(struct em_tx_desc *)que->tx.sc_tx_dma.dma_vaddr;
struct em_tx_desc *sc_tx_desc_ring;