On Tue, May 17, 2016 at 8:10 PM, Yin Lin <li...@vmware.com> wrote:
> Thanks Jesse so much for the reviewing the patch! This is my first attempt to 
> contribute to the ovs community and your prompt reply gave me so much 
> encouragement and inspiration.

Welcome!

> I am not sure why Windows kernel doesn't compute UDP checksum for all 
> tunnels. I added Nithin to the thread to see if he has some idea. My wild 
> guess is that it tries to save some computational workload.

My guess is that it is because VXLAN originally specified that
checksums should not be used. However, my expectation is the checksums
will be more common with Geneve and in all cases the request of
userspace should be honored. It also seemed like GRE was allocating
space for the checksum but not actually computing/verifying it, which
is odd. However, it's definitely possible that I'm missing something.
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