linux-kernel - Re: [V2 PATCH] sctp: Restore 'resent' bit to avoid retransmitted chunks for RTT measurements

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Message-Id: <20131128.183024.1122040393172123504.davem@davemloft.net>
Date:	Thu, 28 Nov 2013 18:30:24 -0500 (EST)
From:	David Miller <davem@...emloft.net>
To:	xufeng.zhang@...driver.com
Cc:	vyasevich@...il.com, nhorman@...driver.com,
	linux-sctp@...r.kernel.org, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [V2 PATCH] sctp: Restore 'resent' bit to avoid retransmitted
 chunks for RTT measurements

From: Xufeng Zhang <xufeng.zhang@...driver.com>
Date: Mon, 25 Nov 2013 11:26:57 +0800

> Currently retransmitted DATA chunks could also be used for
> RTT measurements since there are no flag to identify whether
> the transmitted DATA chunk is a new one or a retransmitted one.
> This problem is introduced by commit ae19c5486 ("sctp: remove
> 'resent' bit from the chunk") which inappropriately removed the
> 'resent' bit completely, instead of doing this, we should set
> the resent bit only for the retransmitted DATA chunks.
> 
> Signed-off-by: Xufeng Zhang <xufeng.zhang@...driver.com>
> ---
> v1->v2:
> Rmoved initialization for resent bit.
> Combined two if clause

Applied, thanks.
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