MLX4_CMD_QUERY_PORT
MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B,
.opcode = MLX4_CMD_QUERY_PORT,
MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B,
err = mlx4_cmd_box(dev, 0, mailbox->dma, port, 0, MLX4_CMD_QUERY_PORT,
MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B,
MLX4_CMD_QUERY_PORT, MLX4_CMD_TIME_CLASS_B,