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[MirageOS-devel] TCP checksum offload with Xen

I see Xen allows guests to indicate that the packet checksum is blank
(XEN_NETTXF_csum_blank). Then dom0 will either fill it in itself or
get the NIC to do it. How can I use this with Mirage?

I tried using ~flags:3 (Checksum_blank + Data_validated) in
mirage-net-xen's netif.ml, but I don't see any TCP packets at all this
way, even when the checksum is actually still being set. DHCP still
works, though.

Does anyone know how this is supposed to work?

Dr Thomas Leonard        http://0install.net/
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GPG: DA98 25AE CAD0 8975 7CDA  BD8E 0713 3F96 CA74 D8BA

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