Function mlx5_flow_ext_mreg_supported

dpdk/drivers/net/mlx5/mlx5_flow.c:1462–1476

* Check extensive flow metadata register support. * * @param dev * Pointer to rte_eth_dev structure. * * @return * True if device supports extensive flow metadata register, otherwise false. */

 *   True if device supports extensive flow metadata register, otherwise false.
 */
bool
mlx5_flow_ext_mreg_supported(struct rte_eth_dev *dev)
{
	struct mlx5_priv *priv = dev->data->dev_private;

	/*
	 * Having available reg_c can be regarded inclusively as supporting
	 * extensive flow metadata register, which could mean,
	 * - metadata register copy action by modify header.
	 * - 16 modify header actions is supported.
	 * - reg_c's are preserved across different domain (FDB and NIC) on
	 *   packet loopback by flow lookup miss.
	 */
	return priv->sh->flow_mreg_c[2] != REG_NON;
}

/**
 * Get the lowest priority.