Function mlx5_ctrl_flow_source_queue

dpdk/drivers/net/mlx5/mlx5_flow.c:8347–8394

* Enable default hairpin egress flow. * * @param dev * Pointer to Ethernet device. * @param sq_num * The SQ hw number. * * @return * 0 on success, a negative errno value otherwise and rte_errno is set. */

 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
int
mlx5_ctrl_flow_source_queue(struct rte_eth_dev *dev,
			    uint32_t sq_num)
{
	const struct rte_flow_attr attr = {
		.egress = 1,
		.priority = 0,
	};
	struct mlx5_rte_flow_item_sq queue_spec = {
		.queue = sq_num,
	};
	struct mlx5_rte_flow_item_sq queue_mask = {
		.queue = UINT32_MAX,
	};
	struct rte_flow_item items[] = {
		{
			.type = (enum rte_flow_item_type)
				MLX5_RTE_FLOW_ITEM_TYPE_SQ,
			.spec = &queue_spec,
			.last = NULL,
			.mask = &queue_mask,
		},
		{
			.type = RTE_FLOW_ITEM_TYPE_END,
		},
	};
	struct rte_flow_action_jump jump = {
		.group = MLX5_HAIRPIN_TX_TABLE,
	};
	struct rte_flow_action actions[2];
	uint32_t flow_idx;
	struct rte_flow_error error;

	actions[0].type = RTE_FLOW_ACTION_TYPE_JUMP;
	actions[0].conf = &jump;
	actions[1].type = RTE_FLOW_ACTION_TYPE_END;
	flow_idx = flow_list_create(dev, MLX5_FLOW_TYPE_CTL,
				    &attr, items, actions, false, &error);
	if (!flow_idx) {
		DRV_LOG(DEBUG,
			"Failed to create ctrl flow: rte_errno(%d),"
			" type(%d), message(%s)",
			rte_errno, error.type,
			error.message ? error.message : " (no stated reason)");
		return -rte_errno;
	}
	return 0;
}

/**
 * Enable a control flow configured from the control plane.