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vdpa/mlx5: Introduce init/destroy for MR resources

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There's currently not a lot of action happening during
the init/destroy of MR resources. But more will be added
in the upcoming patches.

As the mr mutex lock init/destroy has been moved to these
new functions, the lifetime has now shifted away from
mlx5_vdpa_alloc_resources() / mlx5_vdpa_free_resources()
into these new functions. However, the lifetime at the
outer scope remains the same:
mlx5_vdpa_dev_add() / mlx5_vdpa_dev_free()

Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com>
Reviewed-by: Cosmin Ratiu <cratiu@nvidia.com>
Message-Id: <20240830105838.2666587-8-dtatulea@nvidia.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Dragos Tatulea 2024-08-30 13:58:37 +03:00 committed by Michael S. Tsirkin
parent 58d4d50e75
commit f30a1232b6
4 changed files with 26 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/vdpa/mlx5/core/mlx5_vdpa.h
View File

@ -138,6 +138,8 @@ int mlx5_vdpa_create_mkey(struct mlx5_vdpa_dev *mvdev, u32 *mkey, u32 *in,
int mlx5_vdpa_destroy_mkey(struct mlx5_vdpa_dev *mvdev, u32 mkey);
struct mlx5_vdpa_mr *mlx5_vdpa_create_mr(struct mlx5_vdpa_dev *mvdev,
struct vhost_iotlb *iotlb);
int mlx5_vdpa_init_mr_resources(struct mlx5_vdpa_dev *mvdev);
void mlx5_vdpa_destroy_mr_resources(struct mlx5_vdpa_dev *mvdev);
void mlx5_vdpa_clean_mrs(struct mlx5_vdpa_dev *mvdev);
void mlx5_vdpa_get_mr(struct mlx5_vdpa_dev *mvdev,
struct mlx5_vdpa_mr *mr);

17
drivers/vdpa/mlx5/core/mr.c
View File

@ -846,3 +846,20 @@ int mlx5_vdpa_reset_mr(struct mlx5_vdpa_dev *mvdev, unsigned int asid)
return 0;
}
int mlx5_vdpa_init_mr_resources(struct mlx5_vdpa_dev *mvdev)
{
struct mlx5_vdpa_mr_resources *mres = &mvdev->mres;
INIT_LIST_HEAD(&mres->mr_list_head);
mutex_init(&mres->lock);
return 0;
}
void mlx5_vdpa_destroy_mr_resources(struct mlx5_vdpa_dev *mvdev)
{
struct mlx5_vdpa_mr_resources *mres = &mvdev->mres;
mutex_destroy(&mres->lock);
}

3
drivers/vdpa/mlx5/core/resources.c
View File

@ -256,7 +256,6 @@ int mlx5_vdpa_alloc_resources(struct mlx5_vdpa_dev *mvdev)
mlx5_vdpa_warn(mvdev, "resources already allocated\n");
return -EINVAL;
}
mutex_init(&mvdev->mres.lock);
res->uar = mlx5_get_uars_page(mdev);
if (IS_ERR(res->uar)) {
err = PTR_ERR(res->uar);
@ -301,7 +300,6 @@ err_pd:
err_uctx:
mlx5_put_uars_page(mdev, res->uar);
err_uars:
mutex_destroy(&mvdev->mres.lock);
return err;
}
@ -318,7 +316,6 @@ void mlx5_vdpa_free_resources(struct mlx5_vdpa_dev *mvdev)
dealloc_pd(mvdev, res->pdn, res->uid);
destroy_uctx(mvdev, res->uid);
mlx5_put_uars_page(mvdev->mdev, res->uar);
mutex_destroy(&mvdev->mres.lock);
res->valid = false;
}

9
drivers/vdpa/mlx5/net/mlx5_vnet.c
View File

@ -3434,6 +3434,7 @@ static void mlx5_vdpa_free(struct vdpa_device *vdev)
free_fixed_resources(ndev);
mlx5_vdpa_clean_mrs(mvdev);
mlx5_vdpa_destroy_mr_resources(&ndev->mvdev);
if (!is_zero_ether_addr(ndev->config.mac)) {
pfmdev = pci_get_drvdata(pci_physfn(mvdev->mdev->pdev));
mlx5_mpfs_del_mac(pfmdev, ndev->config.mac);
@ -3962,12 +3963,14 @@ static int mlx5_vdpa_dev_add(struct vdpa_mgmt_dev *v_mdev, const char *name,
if (err)
goto err_mpfs;
INIT_LIST_HEAD(&mvdev->mres.mr_list_head);
err = mlx5_vdpa_init_mr_resources(mvdev);
if (err)
goto err_res;
if (MLX5_CAP_GEN(mvdev->mdev, umem_uid_0)) {
err = mlx5_vdpa_create_dma_mr(mvdev);
if (err)
goto err_res;
goto err_mr_res;
}
err = alloc_fixed_resources(ndev);
@ -4009,6 +4012,8 @@ err_res2:
free_fixed_resources(ndev);
err_mr:
mlx5_vdpa_clean_mrs(mvdev);
err_mr_res:
mlx5_vdpa_destroy_mr_resources(mvdev);
err_res:
mlx5_vdpa_free_resources(&ndev->mvdev);
err_mpfs: