tree 6c05886d3ee3ddc30f6b3fce3b6acb27eeab4300
parent 43cc7380eced27ee9cafdf89fa32333dc3884e8b
author Ryousei Takano <takano-ryousei@aist.go.jp> 1193398079 -0700
committer David S. Miller <davem@davemloft.net> 1193398079 -0700

[TCP]: fix D-SACK cwnd handling

In the current net-2.6 kernel, handling FLAG_DSACKING_ACK is broken.
The flag is cleared to 1 just after FLAG_DSACKING_ACK is set.

        if (found_dup_sack)
                flag |= FLAG_DSACKING_ACK;
	:
	flag = 1;

To fix it, this patch introduces a part of the tcp_sacktag_state patch:
	http://marc.info/?l=linux-netdev&m=119210560431519&w=2

Signed-off-by: Ryousei Takano <takano-ryousei@aist.go.jp>
Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>