Kernel bypass for UDP and TCP on Linux- what does it involve?

Question

Per http://www.solacesystems.com/blog/kernel-bypass-revving-up-linux-networking:

[...]a network driver called OpenOnload that use “kernel bypass” tec

Answer 1

A TCP offload engine will "just work", no special application programming needed. It doesn't bypass the whole kernel, it just moves some of the TCP/IP stack from the kernel to the network card, so the driver is slightly higher level. The kernel API is the same.

TCP offload engine is supported by most modern gigabit interfaces.

Alternatively, if you mean "running code on a SolarFlare network adapter's embedded processor/FPGA 'Application Onload Engine'", then... that's card-specific. You're basically writing code for an embedded system, so you need to say which kind of card you're using.