http://netoptimizer.blogspot.com/2014/04/full-scalability-for-netfilter.html
https://www.redhat.com/en/blog/mitigate-tcp-syn-flood-attacks-red-hat-enterprise-linux-7-beta
[nf-next] netfilter: xt_CHECKSUM: avoid bad offload warnings on GSO packets https://lore.kernel.org/patchwork/patch/824819/
[4/4] examples/nf-queue: receive large gso packets https://patchwork.ozlabs.org/patch/239484/
[5/5] netfilter: nfqueue: avoid expensive gso segmentation and checksum fixup https://patchwork.ozlabs.org/patch/237011/
https://github.com/torvalds/linux/blob/master/tools/testing/selftests/net/udpgro_bench.sh https://github.com/torvalds/linux/blob/master/tools/testing/selftests/net/udpgso_bench_tx.c https://github.com/torvalds/linux/blob/master/tools/testing/selftests/net/udpgso_bench_rx.c
https://stackoverflow.com/questions/55516579/udp-gro-do-not-restore-every-udp-packet
udp: implement GRO support udp gso
http://vger.kernel.org/lpc_net2018_talks/willemdebruijn-lpc2018-udpgso-presentation-20181113.pdf