mlx4_QUERY_DEV_CAP
int mlx4_QUERY_DEV_CAP(struct mlx4_dev *dev, struct mlx4_dev_cap *dev_cap);
err = mlx4_QUERY_DEV_CAP(dev, dev_cap);
err = mlx4_QUERY_DEV_CAP(dev, dev_cap);
err = mlx4_QUERY_DEV_CAP(dev, dev_cap);