Function sfc_tx_qstart

dpdk/drivers/net/sfc/sfc_tx.c:512–603

}

int
sfc_tx_qstart(struct sfc_adapter *sa, sfc_sw_index_t sw_index)
{
	struct sfc_adapter_shared * const sas = sfc_sa2shared(sa);
	sfc_ethdev_qid_t ethdev_qid;
	uint64_t offloads_supported = sfc_tx_get_dev_offload_caps(sa) |
				      sfc_tx_get_queue_offload_caps(sa);
	struct sfc_txq_info *txq_info;
	struct sfc_txq *txq;
	struct sfc_evq *evq;
	uint16_t flags = 0;
	unsigned int desc_index;
	int rc = 0;

	ethdev_qid = sfc_ethdev_tx_qid_by_txq_sw_index(sas, sw_index);

	sfc_log_init(sa, "TxQ = %d (internal %u)", ethdev_qid, sw_index);

	SFC_ASSERT(sw_index < sas->txq_count);
	txq_info = &sas->txq_info[sw_index];

	SFC_ASSERT(txq_info->state == SFC_TXQ_INITIALIZED);

	txq = &sa->txq_ctrl[sw_index];
	evq = txq->evq;

	rc = sfc_ev_qstart(evq, sfc_evq_sw_index_by_txq_sw_index(sa, sw_index));
	if (rc != 0)
		goto fail_ev_qstart;

	if (txq_info->offloads & RTE_ETH_TX_OFFLOAD_IPV4_CKSUM)
		flags |= EFX_TXQ_CKSUM_IPV4;

	if (txq_info->offloads & RTE_ETH_TX_OFFLOAD_OUTER_IPV4_CKSUM)
		flags |= EFX_TXQ_CKSUM_INNER_IPV4;

	if ((txq_info->offloads & RTE_ETH_TX_OFFLOAD_TCP_CKSUM) ||
	    (txq_info->offloads & RTE_ETH_TX_OFFLOAD_UDP_CKSUM)) {
		flags |= EFX_TXQ_CKSUM_TCPUDP;

		if (offloads_supported & RTE_ETH_TX_OFFLOAD_OUTER_IPV4_CKSUM)
			flags |= EFX_TXQ_CKSUM_INNER_TCPUDP;
	}

	if (txq_info->offloads & (RTE_ETH_TX_OFFLOAD_TCP_TSO |
				  RTE_ETH_TX_OFFLOAD_VXLAN_TNL_TSO |
				  RTE_ETH_TX_OFFLOAD_GENEVE_TNL_TSO))
		flags |= EFX_TXQ_FATSOV2;

	rc = efx_tx_qcreate(sa->nic, txq->hw_index, 0, &txq->mem,
			    txq_info->entries, 0 /* not used on EF10 */,
			    flags, evq->common,
			    &txq->common, &desc_index);
	if (rc != 0) {
		if (sa->tso && (rc == ENOSPC))
			sfc_err(sa, "ran out of TSO contexts");

		goto fail_tx_qcreate;