I'm part of a students group and we have an assignment about IPv4 implementation and some code that we have to add.

The project consist in a semi-implementation of an IP code(compile as modules)
for the 2.4.2 kernel, it's just didactic and part of a class about networking. :huh:

The object of the project is to add some sort of tunneling support on a native IP code plus some bits for that matter in the IP-address. We're not asking for a code sample of how to do our job but we really need some pointers 'cause we don't know where to start, the basic idea is find the basic IP structures and source files and compile then as module which we can chop and mess with.

Once we have the code separated from the kernel and ready to work it we'll have
to change some structures and add some further functionality to the actual code. :unsure:

This is kind of tricky 'cause a I know there's already tunneling support in IPv4 but as I said is just didactic and is about learning about IP code and even some routing. Our major concern is that we don't have an accurate idea of the proper way to do it and we don't want to mess with code we don't have to. Maybe some of you could give us a pointer about where to start to read and how to chew some code in order to understand the actual IP code implemented in the kernel. :wacko:

Does anybody ever had a go on the actual IP source code?

Thanx