diff options
| author | Wu Zongyong <wuzongyong@linux.alibaba.com> | 2021-10-29 17:14:45 +0800 |
|---|---|---|
| committer | Michael S. Tsirkin <mst@redhat.com> | 2021-11-01 04:30:35 -0400 |
| commit | 3b970a5842c9114c82e60744c84a7d06ee51b6f9 (patch) | |
| tree | f66900975c7e1c5bffd7ec67da3b67acfc9db6c1 /include/linux/vdpa.h | |
| parent | 5bbfea1eacdf584d0d159e38c01ee190162706d9 (diff) | |
vdpa: add new callback get_vq_num_min in vdpa_config_ops
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@redhat.com>
Signed-off-by: Wu Zongyong <wuzongyong@linux.alibaba.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Link: https://lore.kernel.org/r/f4af5b0abd660d9a29ab6b2f67bd6df10284a230.1635493219.git.wuzongyong@linux.alibaba.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Diffstat (limited to 'include/linux/vdpa.h')
| -rw-r--r-- | include/linux/vdpa.h | 4 |
1 files changed, 4 insertions, 0 deletions
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); |