Function txgbe_set_rx_function

dpdk/drivers/net/txgbe/txgbe_rxtx.c:4227–4300

}

void __rte_cold
txgbe_set_rx_function(struct rte_eth_dev *dev)
{
	uint16_t i;
	struct txgbe_adapter *adapter = TXGBE_DEV_ADAPTER(dev);

	/*
	 * Initialize the appropriate LRO callback.
	 *
	 * If all queues satisfy the bulk allocation preconditions
	 * (adapter->rx_bulk_alloc_allowed is TRUE) then we may use
	 * bulk allocation. Otherwise use a single allocation version.
	 */
	if (dev->data->lro) {
		if (adapter->rx_bulk_alloc_allowed) {
			PMD_INIT_LOG(DEBUG, "LRO is requested. Using a bulk "
					   "allocation version");
			dev->rx_pkt_burst = txgbe_recv_pkts_lro_bulk_alloc;
		} else {
			PMD_INIT_LOG(DEBUG, "LRO is requested. Using a single "
					   "allocation version");
			dev->rx_pkt_burst = txgbe_recv_pkts_lro_single_alloc;
		}
	} else if (dev->data->scattered_rx) {
		/*
		 * Set the non-LRO scattered callback: there are bulk and
		 * single allocation versions.
		 */
		if (adapter->rx_bulk_alloc_allowed) {
			PMD_INIT_LOG(DEBUG, "Using a Scattered with bulk "
					   "allocation callback (port=%d).",
				     dev->data->port_id);
			dev->rx_pkt_burst = txgbe_recv_pkts_lro_bulk_alloc;
		} else {
			PMD_INIT_LOG(DEBUG, "Using Regular (non-vector, "
					    "single allocation) "
					    "Scattered Rx callback "
					    "(port=%d).",
				     dev->data->port_id);

			dev->rx_pkt_burst = txgbe_recv_pkts_lro_single_alloc;
		}
	/*
	 * Below we set "simple" callbacks according to port/queues parameters.
	 * If parameters allow we are going to choose between the following
	 * callbacks:
	 *    - Bulk Allocation
	 *    - Single buffer allocation (the simplest one)
	 */
	} else if (adapter->rx_bulk_alloc_allowed) {
		PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions are "
				    "satisfied. Rx Burst Bulk Alloc function "
				    "will be used on port=%d.",
			     dev->data->port_id);

		dev->rx_pkt_burst = txgbe_recv_pkts_bulk_alloc;
	} else {
		PMD_INIT_LOG(DEBUG, "Rx Burst Bulk Alloc Preconditions are not "