Function mlx5_tx_queue_setup

dpdk/drivers/net/mlx5/mlx5_txq.c:393–416

* DPDK callback to configure a TX queue. * * @param dev * Pointer to Ethernet device structure. * @param idx * TX queue index. * @param desc * Number of descriptors to configure in queue. * @param socket * NUMA socket on which memory must be allocated. * @param[in] conf * Thresholds parameters. * * @return * 0 on success, a negative errno value otherwise and rte_errno is

 *   0 on success, a negative errno value otherwise and rte_errno is set.
 */
int
mlx5_tx_queue_setup(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
		    unsigned int socket, const struct rte_eth_txconf *conf)
{
	struct mlx5_priv *priv = dev->data->dev_private;
	struct mlx5_txq_data *txq = (*priv->txqs)[idx];
	struct mlx5_txq_ctrl *txq_ctrl =
		container_of(txq, struct mlx5_txq_ctrl, txq);
	int res;

	res = mlx5_tx_queue_pre_setup(dev, idx, &desc);
	if (res)
		return res;
	txq_ctrl = mlx5_txq_new(dev, idx, desc, socket, conf);
	if (!txq_ctrl) {
		DRV_LOG(ERR, "port %u unable to allocate queue index %u",
			dev->data->port_id, idx);
		return -rte_errno;
	}
	DRV_LOG(DEBUG, "port %u adding Tx queue %u to list",
		dev->data->port_id, idx);
	(*priv->txqs)[idx] = &txq_ctrl->txq;
	return 0;
}

/**
 * DPDK callback to configure a TX hairpin queue.