[PATCH v2 13/24] docs: vhost-user: add VHOST_USER_RESET_VRING message

[Kangjie Xu]

To support the reset operation for an individual virtqueue,
we introduce a new message VHOST_USER_RESET_VRING. This
message is submitted by the front-end to reset an individual
virtqueue to initial states in the back-end. The reply is
needed to ensure that the reset operation is complete.

Signed-off-by: Kangjie Xu <kangjie.xu@linux.alibaba.com>
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
---
 docs/interop/vhost-user.rst | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/docs/interop/vhost-user.rst b/docs/interop/vhost-user.rst
index 3f18ab424e..ce7991b9d3 100644
--- a/docs/interop/vhost-user.rst
+++ b/docs/interop/vhost-user.rst
@@ -1422,6 +1422,16 @@ Front-end message types
   query the back-end for its device status as defined in the Virtio
   specification.
 
+``VHOST_USER_RESET_VRING``
+  :id: 41
+  :equivalent ioctl: N/A
+  :request payload: vring state description
+  :reply payload: ``u64``
+
+  When the feature ``VIRTIO_F_RING_RESET`` feature has been successfully
+  negotiated, this message is submitted by the front-end to reset an
+  individual virtqueue to initial states in the back-end. It will ask
+  for a reply to ensure the virtqueue is successfully reset in the back-end.
 
 Back-end message types
 ----------------------
-- 
2.32.0