+* **Added thread safety to rte_flow functions.**
+
+ Added ``RTE_ETH_DEV_FLOW_OPS_THREAD_SAFE`` device flag to indicate
+ whether PMD supports thread safe operations. If PMD doesn't set the flag,
+ rte_flow API level functions will protect the flow operations with mutex.
+
+* **Added flow-based traffic sampling support.**
+
+ Added new action: ``RTE_FLOW_ACTION_TYPE_SAMPLE`` to duplicate the matching
+ packets with specified ratio, and apply with own set of actions with a fate
+ action. When the ratio is set to 1 then the packets will be 100% mirrored.
+