Does anyone know if there is a free/open source customized OS to help me build my own network appliance by just supplying a C/C++/or Java program?
Currently, I'm using libpcap and libnet, but I'd like a more detailed control of the packets. I'd like to be able to work on the skbs directly in my user- space program and determine if I want to drop/pass/modify each incoming and outgoing skb in my user-space program.
Ideally, I'd like to have a system that lets me user-space program filter each skbs flowing into and out of each network interface. My program needs to be able to modify the data and change the flow (i.e. moving an skbs from 1 network device's output queu to the ouptut queue of another).
Thanks.