static int setup_driver()

in mlx5/net/mlx5_vnet.c [2125:2173]

• 43 lines of code
• 6 McCabe index (conditional complexity)

static int setup_driver(struct mlx5_vdpa_dev *mvdev)
{
	struct mlx5_vdpa_net *ndev = to_mlx5_vdpa_ndev(mvdev);
	int err;

	mutex_lock(&ndev->reslock);
	if (ndev->setup) {
		mlx5_vdpa_warn(mvdev, "setup driver called for already setup driver\n");
		err = 0;
		goto out;
	}
	err = setup_virtqueues(mvdev);
	if (err) {
		mlx5_vdpa_warn(mvdev, "setup_virtqueues\n");
		goto out;
	}

	err = create_rqt(ndev);
	if (err) {
		mlx5_vdpa_warn(mvdev, "create_rqt\n");
		goto err_rqt;
	}

	err = create_tir(ndev);
	if (err) {
		mlx5_vdpa_warn(mvdev, "create_tir\n");
		goto err_tir;
	}

	err = add_fwd_to_tir(ndev);
	if (err) {
		mlx5_vdpa_warn(mvdev, "add_fwd_to_tir\n");
		goto err_fwd;
	}
	ndev->setup = true;
	mutex_unlock(&ndev->reslock);

	return 0;

err_fwd:
	destroy_tir(ndev);
err_tir:
	destroy_rqt(ndev);
err_rqt:
	teardown_virtqueues(ndev);
out:
	mutex_unlock(&ndev->reslock);
	return err;
}