IPFire XDP performance for NAT port forwarding

Hi Michael,

I lost track of the previous email thread so I started this new thread for the XDP performance test result. Here is the test I did https://github.com/vincentmli/BPFire/issues/9 with two real Dell lower end server power edge r220/r210.

I used DPDK Pktgen to generate about 10G SYN flood, XDP drops the SYN flood and IPFire shows about 6.6Gbit/s throughput, without XDP, iptables SYNPROXY achieves about 260 Mbit/s throughput, without iptables SYNPROXY, just simple port forward, it achieves 140 Mbit/s.

I understand any performance test is constrained by the specific test environment and test methodology, and many other factors. just present this result for you.

Vincent