Virtualization - Dec 2021 - [PATCH v3 09/10] vdpa/mlx5: Configure max supported virtqueues

? 2021/12/19 ??10:02, Eli Cohen ??:
> Configure max supported virtqueues on the management device. This info
> can be retrieved using:
>
> $ vdpa dev show
> vdpa-a: type network mgmtdev auxiliary/mlx5_core.sf.1 vendor_id 5555 \
> 	max_vqp 3 max_vq_size 256 max_supported_vqs 256

I still think we should report 257 here to be aligned with the spec even 
if we know cvq is probably emulated.

>
> Signed-off-by: Eli Cohen <elic at nvidia.com>
> ---
>   drivers/vdpa/mlx5/net/mlx5_vnet.c | 1 +
>   1 file changed, 1 insertion(+)
>
> diff --git a/drivers/vdpa/mlx5/net/mlx5_vnet.c
b/drivers/vdpa/mlx5/net/mlx5_vnet.c
> index 72ed5efbe35d..68dbddadde93 100644
> --- a/drivers/vdpa/mlx5/net/mlx5_vnet.c
> +++ b/drivers/vdpa/mlx5/net/mlx5_vnet.c
> @@ -2689,6 +2689,7 @@ static int mlx5v_probe(struct auxiliary_device *adev,
>   	mgtdev->mgtdev.id_table = id_table;
>   	mgtdev->mgtdev.config_attr_mask =
BIT_ULL(VDPA_ATTR_DEV_NET_CFG_MACADDR) |
>   					  BIT_ULL(VDPA_ATTR_DEV_NET_CFG_MAX_VQP);
> +	mgtdev->mgtdev.max_supported_vqs = MLX5_CAP_DEV_VDPA_EMULATION(mdev,
max_num_virtio_queues);

Do we need to change other vdpa parent like the simulator and ifcvf?

Thanks

>   	mgtdev->madev = madev;
>   
>   	err = vdpa_mgmtdev_register(&mgtdev->mgtdev);