doc: fix release notes for virtio

Add release notes for the notification data feature of virtio-PMD.

Fixes: 7e72f3ec1a8a ("net/virtio: support packed ring notification data")

Signed-off-by: Cheng Jiang <cheng1.jiang@intel.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>

diff --git a/doc/guides/rel_notes/release_20_02.rst b/doc/guides/rel_notes/release_20_02.rst
index 3c7b5d7..2b903cb 100644 (file)
--- a/doc/guides/rel_notes/release_20_02.rst
+++ b/doc/guides/rel_notes/release_20_02.rst
@@ -125,6 +125,14 @@ New Features
   Added a new Mellanox vDPA  (``mlx5_vdpa``) PMD.
   See the :doc:`../vdpadevs/mlx5` guide for more details on this driver.
 
+* **Added support for virtio-PMD notification data.**
+
+  Added support for virtio-PMD notification data so that the driver
+  passes extra data (besides identifying the virtqueue) in its device
+  notifications, expanding the notifications to include the avail index and
+  avail wrap counter (When split ring is used, the avail wrap counter is not
+  included in the notification data).
+
 * **Updated testpmd application.**
 
   Added support for ESP and L2TPv3 over IP rte_flow patterns to the testpmd