[PATCH v9 27/32] virtio: add helper virtio_find_vqs_ctx_size()

[Jason Wang]

在 2022/4/6 上午11:43, Xuan Zhuo 写道:
> Introduce helper virtio_find_vqs_ctx_size() to call find_vqs and specify
> the maximum size of each vq ring.
>
> Signed-off-by: Xuan Zhuo <xuanzhuo at linux.alibaba.com>


Acked-by: Jason Wang <jasowang at redhat.com>


> ---
>   include/linux/virtio_config.h | 12 ++++++++++++
>   1 file changed, 12 insertions(+)
>
> diff --git a/include/linux/virtio_config.h b/include/linux/virtio_config.h
> index 0f7def7ddfd2..22e29c926946 100644
> --- a/include/linux/virtio_config.h
> +++ b/include/linux/virtio_config.h
> @@ -235,6 +235,18 @@ int virtio_find_vqs_ctx(struct virtio_device *vdev, unsigned nvqs,
>   				      ctx, desc);
>   }
>   
> +static inline
> +int virtio_find_vqs_ctx_size(struct virtio_device *vdev, u32 nvqs,
> +				 struct virtqueue *vqs[],
> +				 vq_callback_t *callbacks[],
> +				 const char * const names[],
> +				 u32 sizes[],
> +				 const bool *ctx, struct irq_affinity *desc)
> +{
> +	return vdev->config->find_vqs(vdev, nvqs, vqs, callbacks, names, sizes,
> +				      ctx, desc);
> +}
> +
>   /**
>    * virtio_device_ready - enable vq use in probe function
>    * @vdev: the device