>> Hi >> >> why does virtio not support IPv4 CKSUM? But support TCP/UDP cksum.
> Because virtio is a software driver developed on Linux and Linux doesn't > need/want IP checksum offload. > It takes longer to look at offload bits then to compute checksum in SW. However, Virtio supports LRO. Is it possible to merge packets with incorrect cksum? >> >> If not support ipv4 cksum, when I use GRO, the ip cksum of the packets >> transmitted to ip layer will be incorrect. >> I have to calculate ip cksum before packet was transmiited to ip layer. >> So why does virtio not support ipv4 cksum ?
