From: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Date: Thu, 3 May 2007 10:30:34 +0000 (-0700)
Subject: [TCP]: Use S+L catcher only with SACK for now
X-Git-Tag: v2.6.22-rc1~1036^2~36
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0ec96822d5c0df77107c03b8d9a81a436ab707fc;p=pandora-kernel.git

[TCP]: Use S+L catcher only with SACK for now

TCP has a transitional state when SACK is not in use during
which this invariant is temporarily broken. Without SACK,
tcp_clean_rtx_queue does not decrement sacked_out. Therefore
calls to tcp_sync_left_out before sacked_out is again
corrected by tcp_fastretrans_alert can trigger this trap as
sacked_out still has couple of segments that are already out
of window.

Signed-off-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

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