mal_descriptor
memset(dev->tx_desc, 0, NUM_TX_BUFF * sizeof(struct mal_descriptor));
memset(dev->rx_desc, 0, NUM_RX_BUFF * sizeof(struct mal_descriptor));
struct mal_descriptor *tx_desc;
struct mal_descriptor *rx_desc;
bd_size = sizeof(struct mal_descriptor) *
sizeof(struct mal_descriptor) *
sizeof(struct mal_descriptor) *
sizeof(struct mal_descriptor) *
struct mal_descriptor *bd_virt;