The following set of patches add support for enabling UFO on virtio-net and
tap devices that allows sending/receiving large UDP packets between host and
guest and multiple guests running under KVM.
[PATCH net-next 1/4] IPv6: HW csum support for outgoing large UFO packets
[PATCH net-next 2/4] udp: Handle large UFO packets from untrusted sources
[PATCH net-next 3/4] virtio_net: Allow UFO feature to be set on virtio_net device.
[PATCH net-next 4/4] tun: Allow tap device to send/receive UFO packets.
In order to use this feature, Qemu needs to negotiate and set UFO feature in
the tap and virtio-net devices. I am also including a patch to qemu-kvm git
that does this.
Thanks
Sridhar