understanding TCP-IP interface in linux kernel

Hi all,
I am planning to write a kernel module which will sit below tcp and
intercept every incoming and outgoing packet(shud i say segment ?? ).
In order to do that i was taking a look at net/ipv4/tcp* files but the
code does hell lot of things and makes it hard for me to find my way
through it.
C
an somebody point me to correct place from where i should start ??
I havent learnt yet about tcp implementation in linux kernel. by TCP-IP
i mean those 2 protocols and not the complete suite.
Is thr good online documentation explaining this implementation.??

Also what am curios about is :
TCP-IP interface .. so how does TCP layer sends "segment" to IP and
receives sengment from IP. ??

Any help in this regard will be greatly appreciated ...

Regards,
TellMeMore

.

Relevant Pages

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