* Compute flow hash of an ethernet packet, use 5-tuple hash if L3 packet
* is ip4 or ip6. Otherwise hash on smac/dmac/etype.
* The vlib buffer current pointer is expected to be at ethernet header
* Compute flow hash of an ethernet packet, use 5-tuple hash if L3 packet
* is ip4 or ip6. Otherwise hash on smac/dmac/etype.
* The vlib buffer current pointer is expected to be at ethernet header