On Tue, Jan 11, 2022 at 09:22:53AM +0200, Eli Cohen wrote:
> Make sure the decision whether an index received trough a callback is

through

> valid or not consults the negotiated features.
> 
> Signed-off-by: Eli Cohen <[email protected]>

Which commit does this fix?

> ---
>  drivers/vdpa/mlx5/net/mlx5_vnet.c | 10 +++++++---
>  1 file changed, 7 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/vdpa/mlx5/net/mlx5_vnet.c 
> b/drivers/vdpa/mlx5/net/mlx5_vnet.c
> index d1ff65065fb1..9eacfdb48434 100644
> --- a/drivers/vdpa/mlx5/net/mlx5_vnet.c
> +++ b/drivers/vdpa/mlx5/net/mlx5_vnet.c
> @@ -133,10 +133,14 @@ struct mlx5_vdpa_virtqueue {
>  
>  static bool is_index_valid(struct mlx5_vdpa_dev *mvdev, u16 idx)
>  {
> -     if (unlikely(idx > mvdev->max_idx))
> -             return false;
> +     if (!(mvdev->actual_features & BIT_ULL(VIRTIO_NET_F_MQ))) {
> +             if (!(mvdev->actual_features & BIT_ULL(VIRTIO_NET_F_CTRL_VQ)))
> +                     return idx < 2;
> +             else
> +                     return idx < 3;
> +     }
>  
> -     return true;
> +     return idx <= mvdev->max_idx;
>  }
>  
>  struct mlx5_vdpa_net {
> -- 
> 2.34.1

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