Comment by dan-robertson
2 days ago
Is that true? Aren’t lots of the tcp optimisations about offloading work to the hardware, eg segmentation or tls offload? The hardware would need to know about your tcp-in-udp protocol to be able to handle that efficiently.
Most hardware is fairly generic for tunneled protocols, and tx descriptors can take things like "inner l4 header offset/len" and "outer l4 header offset/len"
Generic support for tunneled TCP is far more doable than support for a new and volatile protocol.