help in tcp/ip source hacking

["vamshi varma" <vamshiv@onebox.com>]

Hi all,
   I am trying to understand the tcp/ip implementation
in Linux.
My doubt is where the ethernet header is being formed 
for the outgoing packet.
I was able to know that it is being cached in dst_entry
as "struct hh_cache" held by both neighbour table as well as rtable.
This reduces the time taken to form ethernet header
for each and every packet going out.

But I was not able to see where exactly the cached ethernet header is
being pushed into sk_buff holding our packet.

As I see eth_header(ethernet/eth.c) pushes the header into
sk_buff but this func is not being called by anybody?

Can any body help?

-- 
vamshi varma
vamshiv@onebox.com - email
(626) 940-1240 x7173 - voicemail/fax



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