From: Xiaoliang (David) Wei <davidwei79@gmail.com>
Date: Tue, 30 Oct 2007 03:24:36 +0000 (-0700)
Subject: [TCP] vegas: Fix a bug in disabling slow start by gamma parameter.
X-Git-Tag: v2.6.24-rc2~79^2~10
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c940587bf603b4295a7f5e9ff8fed123368a1ef7;p=pandora-kernel.git

[TCP] vegas: Fix a bug in disabling slow start by gamma parameter.

TCP Vegas implementation has a bug in the process of disabling
slow-start with gamma parameter. The bug may lead to extreme
unfairness in the presence of early packet loss. See details in:
http://www.cs.caltech.edu/~weixl/technical/ns2linux/known_linux/index.html#vegas

Switch the order of "if (tp->snd_cwnd <= tp->snd_ssthresh)" statement
and "if (diff > gamma)" statement to eliminate the problem.

Signed-off-by: Xiaoliang (David) Wei <davidwei79@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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