[PATCH v7 21/26] virtio: add helper virtio_find_vqs_ctx_size()

[Jason Wang]

在 2022/3/8 下午8:35, 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>
> ---
>   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 5157524d8036..921d8610db0c 100644
> --- a/include/linux/virtio_config.h
> +++ b/include/linux/virtio_config.h
> @@ -233,6 +233,18 @@ int virtio_find_vqs_ctx(struct virtio_device *vdev, unsigned nvqs,
>   				      desc, NULL);
>   }
>   
> +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[],
> +				 const bool *ctx, struct irq_affinity *desc,
> +				 u32 sizes[])
> +{
> +	return vdev->config->find_vqs(vdev, nvqs, vqs, callbacks, names, ctx,
> +				      desc, sizes);
> +}


Do we need to convert all the open coded direct call to find_vqs() other 
than net?

Thanks


> +
>   /**
>    * virtio_reset_vq - reset a queue individually
>    * @vq: the virtqueue