Choose transmit datapath implementation.
**auto** allows the driver itself to make a choice based on firmware
features available and required by the datapath implementation.
**efx** chooses libefx-based datapath which supports VLAN insertion
(full-feature firmware variant only), TSO and multi-segment mbufs.
Choose transmit datapath implementation.
**auto** allows the driver itself to make a choice based on firmware
features available and required by the datapath implementation.
**efx** chooses libefx-based datapath which supports VLAN insertion
(full-feature firmware variant only), TSO and multi-segment mbufs.