AFAIK, wireshark is the best Linux tool for analyzing network traffic. Primarily intended for Ethernet networks, there is now also support for very different protocols (e.g. USB). Sadly, there is no support for fibre channel, most likely because there is even no infrastructure in the kernel. I doubt I could write the complete stack within just one week. The result should be a clear plan of what needs to be done on each level and a proof-of-concept implementation of at least some parts.