On 03/30/15 at 04:33P, Adrian Chadd wrote: > So, the 32 bit field that has the flowid in the rx descriptor can mean > multiple things - not just the flowid. > > For igb it can also mean one of the RX checksums.
I care about igb(4) right now and I350 specifically. I checked the spec and section 7.1.2.8 Receive-Side Scaling (RSS) which defines it. In igb_initialise_rss_mapping(), we do set MRQC register which means we are getting RSS hash in flowid. And we disable packet checksum to get RSS type via PCSD register. Is my understanding not correct? I am missing how can we not get RSS hash in flowid in this case. Can you please explain? Cheers, Hiren
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