[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <25435d5cde12f298133196e866662b0ef2225205.1634281805.git.wuzongyong@linux.alibaba.com>
Date: Fri, 15 Oct 2021 15:14:57 +0800
From: Wu Zongyong <wuzongyong@...ux.alibaba.com>
To: wuzongyong@...ux.alibaba.com, jasowang@...hat.com,
virtualization@...ts.linux-foundation.org,
linux-kernel@...r.kernel.org, mst@...hat.com
Cc: wei.yang1@...ux.alibaba.com
Subject: [PATCH v5 4/8] 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@...hat.com>
Signed-off-by: Wu Zongyong <wuzongyong@...ux.alibaba.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
Powered by blists - more mailing lists