From 1496c47065f9f8413296780c63374daee9bdae20 Mon Sep 17 00:00:00 2001 From: Zhu Lingshan Date: Sat, 3 Feb 2024 00:38:56 +0800 Subject: vhost-vdpa: uapi to support reporting per vq size The size of a virtqueue is a per vq configuration. This commit introduce a new ioctl uAPI to support this flexibility. Signed-off-by: Zhu Lingshan Message-Id: <20240202163905.8834-2-lingshan.zhu@intel.com> Signed-off-by: Michael S. Tsirkin --- include/uapi/linux/vhost.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include/uapi') diff --git a/include/uapi/linux/vhost.h b/include/uapi/linux/vhost.h index 649560c685f1..bea697390613 100644 --- a/include/uapi/linux/vhost.h +++ b/include/uapi/linux/vhost.h @@ -227,4 +227,11 @@ */ #define VHOST_VDPA_GET_VRING_DESC_GROUP _IOWR(VHOST_VIRTIO, 0x7F, \ struct vhost_vring_state) + +/* Get the queue size of a specific virtqueue. + * userspace set the vring index in vhost_vring_state.index + * kernel set the queue size in vhost_vring_state.num + */ +#define VHOST_VDPA_GET_VRING_SIZE _IOWR(VHOST_VIRTIO, 0x80, \ + struct vhost_vring_state) #endif -- cgit