+- ``tx_mode_latency`` (default **0**)
+
+ When set to 1, Tx doesn't wait for max number of packets to get
+ coalesced and sends the packets immediately at the end of the
+ current Tx burst. When set to 0, Tx waits across multiple Tx bursts
+ until the max number of packets have been coalesced. In this case,
+ Tx only sends the coalesced packets to hardware once the max
+ coalesce limit has been reached.
+
+CXGBE VF Only Runtime Options
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+- ``force_link_up`` (default **0**)
+
+ When set to 1, CXGBEVF PMD always forces link as up for all VFs on
+ underlying Chelsio NICs. This enables multiple VFs on the same NIC
+ to send traffic to each other even when the physical link is down.
+