It is used to enable tso support in vhost library.
(Default: 0 (disabled))
+#. ``linear-buffer``:
+
+ It is used to enable linear buffer support in vhost library.
+ (Default: 0 (disabled))
+
+#. ``ext-buffer``:
+
+ It is used to enable external buffer support in vhost library.
+ (Default: 0 (disabled))
+
Vhost PMD event handling
------------------------