netdev - Re: [PATCH net 2/2] tcp: don't over-send F-RTO probes

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Message-Id: <20150519.163726.39558547040538869.davem@davemloft.net>
Date:	Tue, 19 May 2015 16:37:26 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	ycheng@...gle.com
Cc:	netdev@...r.kernel.org, ncardwell@...gle.com
Subject: Re: [PATCH net 2/2] tcp: don't over-send F-RTO probes

From: Yuchung Cheng <ycheng@...gle.com>
Date: Mon, 18 May 2015 12:31:45 -0700

> After sending the new data packets to probe (step 2), F-RTO may
> incorrectly send more probes if the next ACK advances SND_UNA and
> does not sack new packet. However F-RTO RFC 5682 probes at most
> once. This bug may cause sender to always send new data instead of
> repairing holes, inducing longer HoL blocking on the receiver for
> the application.
> 
> Signed-off-by: Yuchung Cheng <ycheng@...gle.com>
> Signed-off-by: Neal Cardwell <ncardwell@...gle.com>

Applied.
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