doc: update Tx burst behavior

Signed-off-by: Zhiyong Yang <zhiyong.yang@intel.com>

diff --git a/doc/guides/rel_notes/release_17_05.rst b/doc/guides/rel_notes/release_17_05.rst
index 705ba27..1888cff 100644 (file)
--- a/doc/guides/rel_notes/release_17_05.rst
+++ b/doc/guides/rel_notes/release_17_05.rst
@@ -67,6 +67,12 @@ New Features
 
   sPAPR IOMMU based pci probing enabled for vfio-pci devices.
 
+* **Kept consistent PMD batching behaviour.**
+
+  Removed the limit of fm10k/i40e/ixgbe TX burst size and vhost RX/TX burst size
+  in order to support the same policy of "make an best effort to RX/TX pkts"
+  for PMDs.
+
 * **Updated the ixgbe base driver.**
 
   Updated the ixgbe base driver, including the following changes: