tun: Allow GSO using virtio_net_hdr
Add a IFF_VNET_HDR flag. This uses the same ABI as virtio_net (ie. prepending struct virtio_net_hdr to packets) to indicate GSO and checksum information. Signed-off-by:Rusty Russell <rusty@rustcorp.com.au> Acked-by:
Max Krasnyansky <maxk@qualcomm.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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