to request the driver to release mbufs from their Tx ring that are no longer
in use, independent of whether or not the ``tx_rs_thresh`` has been crossed.
+* **Added EAL dynamic log framework.**
+
+ Added new APIs to dynamically register named log types, and control
+ the level of each type independently.
+
* **Added descriptor status ethdev API.**
Added a new API to get the status of a descriptor.