From 0a926fc972532788719fd03c4a44724ec23c1875 Mon Sep 17 00:00:00 2001
From: Zhu Lingshan <lingshan.zhu@intel.com>
Date: Sat, 3 Feb 2024 00:38:57 +0800
Subject: vDPA: introduce get_vq_size to vdpa_config_ops
This commit introduces a new interface get_vq_size to
vDPA config ops, this new interface intends to report
the size of a specific virtqueue
Signed-off-by: Zhu Lingshan <lingshan.zhu@intel.com>
Message-Id: <20240202163905.8834-3-lingshan.zhu@intel.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
---
include/linux/vdpa.h | 5 +++++
1 file changed, 5 insertions(+)
(limited to 'include')
diff --git a/include/linux/vdpa.h b/include/linux/vdpa.h
index db15ac07f8a6..4097e8e92860 100644
--- a/include/linux/vdpa.h
+++ b/include/linux/vdpa.h
@@ -195,6 +195,10 @@ struct vdpa_map_file {
* @idx: virtqueue index
* Returns int: irq number of a virtqueue,
* negative number if no irq assigned.
+ * @get_vq_size: Get the size of a specific virtqueue (optional)
+ * @vdev: vdpa device
+ * @idx: virtqueue index
+ * Return u16: the size of the virtqueue
* @get_vq_align: Get the virtqueue align requirement
* for the device
* @vdev: vdpa device
@@ -386,6 +390,7 @@ struct vdpa_config_ops {
(*get_vq_notification)(struct vdpa_device *vdev, u16 idx);
/* vq irq is not expected to be changed once DRIVER_OK is set */
int (*get_vq_irq)(struct vdpa_device *vdev, u16 idx);
+ u16 (*get_vq_size)(struct vdpa_device *vdev, u16 idx);
/* Device ops */
u32 (*get_vq_align)(struct vdpa_device *vdev);
--
cgit