Jason Wang
2021-Oct-25 02:17 UTC
[PATCH v6 4/8] vdpa: add new callback get_vq_num_min in vdpa_config_ops
On Fri, Oct 22, 2021 at 10:44 AM Wu Zongyong <wuzongyong at linux.alibaba.com> wrote:> > This callback is optional. For vdpa devices that not support to change > virtqueue size, get_vq_num_min and get_vq_num_max will return the same > value, so that users can choose a correct value for that device. > > Suggested-by: Jason Wang <jasowang at redhat.com> > Signed-off-by: Wu Zongyong <wuzongyong at linux.alibaba.com>Acked-by: Jason Wang <jasowang at redhat.com>> --- > include/linux/vdpa.h | 4 ++++ > 1 file changed, 4 insertions(+) > > diff --git a/include/linux/vdpa.h b/include/linux/vdpa.h > index a896ee021e5f..30864848950b 100644 > --- a/include/linux/vdpa.h > +++ b/include/linux/vdpa.h > @@ -171,6 +171,9 @@ struct vdpa_map_file { > * @get_vq_num_max: Get the max size of virtqueue > * @vdev: vdpa device > * Returns u16: max size of virtqueue > + * @get_vq_num_min: Get the min size of virtqueue (optional) > + * @vdev: vdpa device > + * Returns u16: min size of virtqueue > * @get_device_id: Get virtio device id > * @vdev: vdpa device > * Returns u32: virtio device id > @@ -266,6 +269,7 @@ struct vdpa_config_ops { > void (*set_config_cb)(struct vdpa_device *vdev, > struct vdpa_callback *cb); > u16 (*get_vq_num_max)(struct vdpa_device *vdev); > + u16 (*get_vq_num_min)(struct vdpa_device *vdev); > u32 (*get_device_id)(struct vdpa_device *vdev); > u32 (*get_vendor_id)(struct vdpa_device *vdev); > u8 (*get_status)(struct vdpa_device *vdev); > -- > 2.31.1 >