From: Rafal Ozieblo <raf...@cadence.com> Date: Mon, 14 Nov 2016 09:32:34 +0000
>> If UFO is in use it should not silently disable UDP checksums. >> >> If you cannot support UFO with proper checksumming, then you cannot enable >> support for that feature. > > According Cadence Gigabit Ethernet MAC documentation: > > "Hardware will not calculate the UDP checksum or modify the UDP checksum > field. Therefore software > must set a value of zero in the checksum field in the UDP header (in the > first payload buffer) > to indicate to the receiver that the UDP datagram does not include a > checksum." > > It is hardware requirement. I do not doubt that it is a hardware restriction. But I am saying that you cannot enable this feature under Linux if this is how it operates on your hardware.
