iavf_tx_desc
struct iavf_tx_desc *tx_base;
struct iavf_tx_desc *txd = NULL;
(sizeof(struct iavf_tx_desc)) *
sizeof(struct iavf_tx_desc) * scctx->isc_ntxd[0];
txr->tx_base = (struct iavf_tx_desc *)vaddrs[i * ntxqs];
* sizeof(struct iavf_tx_desc) + sizeof(u32), DBA_ALIGN);
* sizeof(struct iavf_tx_desc), DBA_ALIGN);