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Commit 9fd25592 authored by Arthur Kiyanovski's avatar Arthur Kiyanovski Committed by David S. Miller
Browse files

net: ena: enable Low Latency Queues 



Use the new API to enable usage of LLQ.

Signed-off-by: default avatarArthur Kiyanovski <akiyano@amazon.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 8c590f97

drivers/net/ethernet/amazon/ena/ena_netdev.c

+4 −14
Original line number Diff line number Diff line
@@ -3022,20 +3022,10 @@ static int ena_calc_io_queue_num(struct pci_dev *pdev, 
	int io_sq_num, io_queue_num;



	/* In case of LLQ use the llq number in the get feature cmd */

	if (ena_dev->tx_mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_DEV) {

		io_sq_num = get_feat_ctx->max_queues.max_legacy_llq_num;



		if (io_sq_num == 0) {

			dev_err(&pdev->dev,

				"Trying to use LLQ but llq_num is 0. Fall back into regular queues\n");



			ena_dev->tx_mem_queue_type =

				ENA_ADMIN_PLACEMENT_POLICY_HOST;

			io_sq_num = get_feat_ctx->max_queues.max_sq_num;

		}

	} else {

	if (ena_dev->tx_mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_DEV)

		io_sq_num = get_feat_ctx->llq.max_llq_num;

	else

		io_sq_num = get_feat_ctx->max_queues.max_sq_num;

	}



	io_queue_num = min_t(int, num_online_cpus(), ENA_MAX_NUM_IO_QUEUES);

	io_queue_num = min_t(int, io_queue_num, io_sq_num);
@@ -3238,7 +3228,7 @@ static int ena_calc_queue_size(struct pci_dev *pdev, 


	if (ena_dev->tx_mem_queue_type == ENA_ADMIN_PLACEMENT_POLICY_DEV)

		queue_size = min_t(u32, queue_size,

				   get_feat_ctx->max_queues.max_legacy_llq_depth);

				   get_feat_ctx->llq.max_llq_depth);



	queue_size = rounddown_pow_of_two(queue_size);