linux-kernel - kara

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Message-ID: <747860.31019.qm@web45912.mail.sp1.yahoo.com>
Date:	Tue, 5 Feb 2008 04:10:42 -0800 (PST)
From:	am kara <kara_am@...oo.com>
To:	linux-kernel@...r.kernel.org
Subject: kara_am

I am trying to understand IPsec and found some related
subfolders:
crypto, net/key, net/xfrm, net/netlink
and it may be more folders and files involved in the
process.

Would anyone please tell me how is the flow of
network(internet) information(traffic) from a user
process to the deepest layers of the kernel only by
the name of the most important files and folders in
case of IPsec and a typical TCP, IP(and IPsec) and
Ethernet adaptor senario?

For example: 
setkey(shell command)--> ....(some intermediate
processes)-->crypto(setkey method)  

I guess it should be:
net/ipv4-->net/key-->net/xfrm-->crypto
net/ipv4-->net/core-->net/core/dev.c

What is netlink, is it a kind of socket? how does it
become connected to IPsec? 

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