[Codel] [PATCH net-next] fq_codel: report congestion notification at enqueue time

Eric Dumazet eric.dumazet at gmail.com
Fri Jun 29 00:53:12 EDT 2012

On Thu, 2012-06-28 at 19:07 +0200, Eric Dumazet wrote:
> From: Eric Dumazet <edumazet at 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 at google.com>
> Cc: Dave Taht <dave.taht at bufferbloat.net>
> Cc: Tom Herbert <therbert at google.com>
> Cc: Matt Mathis <mattmathis at google.com>
> Cc: Yuchung Cheng <ycheng at google.com>
> Cc: Nandita Dukkipati <nanditad at google.com>
> Cc: Neal Cardwell <ncardwell at google.com>
> ---

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


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