netdev - About disabling congestion control

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Message-ID: <AANLkTin53drsv18TZ0CPZM7==6G=rK6vScUb=SCQ4-xr@mail.gmail.com>
Date:	Thu, 6 Jan 2011 20:25:18 -0500
From:	Syed Obaid Amin <obaidasyed@...il.com>
To:	netdev@...r.kernel.org
Subject: About disabling congestion control

Hey all,

I am currently working on a socket option to disable the tcp
congestion control. I think the simplest approach to do this is to
ignore cwnd before sending out a packet.

After going through tcp output engine it seems that tcp_cwnd_test is
the method that decides that how many segments can be sent out on a
wire. For testing it out, I changed this method so that if no-cc
option is ON, just return a big constant value. But, it didn't work
and I am unable to see a burst of pkts. It looks like that I am
missing something here.

Any suggestions that what is the right place to look for disabling the
congestion control ?

Thanks much!

Obaid
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