how to use sk_buff in netfilter

[Henrik Nordstrom]

On Mon, 31 Oct 2005, jywang wrote:

> this so good a tutorial of sk_buff.
>
> and, what is about the struct sock and other core structures?

most are not allowed to be used from netfilter hooks...

but many are documented in the kernel docbook documentation received with 
the kernel sources ("make doc" in the kernel tree to build them..)

Regards
Henrik