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Re: [Xen-devel] Re: Trouble with TCP between domUs

David Edmondson <dme@xxxxxxx> wrote:
>> When I extended the netback protocol for TSO the idea was that you
>> can also have an extra descriptor for checksum offload that would
>> carry the offsets.
> But that offset is not present today, suggesting that the peer
> receiving the packet must be parsing it to determine where to place
> the checksum (though I couldn't find that code in a quick inspection).

What I meant is that the checksum offload can use the same mechanism
as GSO to pass the offset in a descriptor.  This has not been implemented

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