RX62N - uIP beginner

Hi! I'm using an RX62N RSK development board under e2studio with e2 Lite debugger. I've been working on an extremely simple FreeRTOS demo to blink a LED, and adding functionalities on top of it. The next step is to add TCP/IP connectivity. I've seen that FreeRTOS' demo uses uIP to implement a webserver and I've sucessfully implemented it in on the development board.

The thing is, I don't need the webserver at all, I just need to send and receive frames using TCP/IP. So I was wondering, what's the easiest way to implement uIP and which files should I include in order to do so? 

I would really appreciate any help on the matter.