jprice,
As far as programming sockets goes on the MPC8313E-RDB under LTIB, it looks like you have a good head start in that you have your environment up and running and are able to compile a test program.
Getting sockets working is pretty straightforward and I can vouch for the fact that I have both IPv4/UDP and raw packet sockets working just fine for my IEEE 1588 PTP project. Although I've not done any direct work with IPv4/TCP sockets, I am sure they should drop in just fine.
For my project I ported the IEEE 1588 Precision Time Protocol daemon code (ptpd) at sourceforge.net. If you download that code, there is a good example of IPv4/UDP socket handling and the code is also abstracted pretty well to function calls like netInit, netSendEvent, etc. You can find that code at:
http://www.security-freak.net/sockets/socket-programming.html
If you've never programmed in sockets before, then one site that helped me learn the basics was at:
http://www.security-freak.net/sockets/socket-programming.html
This is a cool site in that there is not just sample code for raw sockets, but also some video tutorials that walk you through the process of coding and testing some simple socket programs.
Anyway, hopefully this helps. I can also send you some sample code if you'd like that I actually have running on my MPC8313E-RDB board. You can drop me an email by my Freescale alias "abartky" or you can also find my contact info at my web site.
Cheers,
abartky