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From: Eric Dumazet <eric.dumazet@gmail.com>
To: David Miller <davem@davemloft.net>
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Date: Fri, 29 Jun 2012 06:53:12 +0200
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Cc: Nandita Dukkipati <nanditad@google.com>, netdev <netdev@vger.kernel.org>,
	codel@lists.bufferbloat.net, Yuchung Cheng <ycheng@google.com>,
	Neal Cardwell <ncardwell@google.com>, Matt Mathis <mattmathis@google.com>
Subject: Re: [Codel] [PATCH net-next] fq_codel: report congestion
 notification at enqueue time
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On Thu, 2012-06-28 at 19:07 +0200, Eric Dumazet wrote:
> From: Eric Dumazet <edumazet@google.com>
> 
> At enqueue time, check sojourn time of packet at head of the queue,
> and return NET_XMIT_CN instead of NET_XMIT_SUCCESS if this sejourn
> time is above codel @target.
> 
> This permits local TCP stack to call tcp_enter_cwr() and reduce its cwnd
> without drops (for example if ECN is not enabled for the flow)
> 
> Signed-off-by: Eric Dumazet <edumazet@google.com>
> Cc: Dave Taht <dave.taht@bufferbloat.net>
> Cc: Tom Herbert <therbert@google.com>
> Cc: Matt Mathis <mattmathis@google.com>
> Cc: Yuchung Cheng <ycheng@google.com>
> Cc: Nandita Dukkipati <nanditad@google.com>
> Cc: Neal Cardwell <ncardwell@google.com>
> ---

Please dont apply this patch, I'll submit an updated version later.

Thanks