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Message-ID: <1340945592.29822.8.camel@edumazet-glaptop> Date: Fri, 29 Jun 2012 06:53:12 +0200 From: Eric Dumazet <eric.dumazet@...il.com> To: David Miller <davem@...emloft.net> Cc: netdev <netdev@...r.kernel.org>, Dave Taht <dave.taht@...il.com>, codel@...ts.bufferbloat.net, Tom Herbert <therbert@...gle.com>, Matt Mathis <mattmathis@...gle.com>, Yuchung Cheng <ycheng@...gle.com>, Nandita Dukkipati <nanditad@...gle.com>, Neal Cardwell <ncardwell@...gle.com> Subject: Re: [PATCH net-next] fq_codel: report congestion notification at enqueue time On Thu, 2012-06-28 at 19:07 +0200, Eric Dumazet wrote: > From: Eric Dumazet <edumazet@...gle.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@...gle.com> > Cc: Dave Taht <dave.taht@...ferbloat.net> > Cc: Tom Herbert <therbert@...gle.com> > Cc: Matt Mathis <mattmathis@...gle.com> > Cc: Yuchung Cheng <ycheng@...gle.com> > Cc: Nandita Dukkipati <nanditad@...gle.com> > Cc: Neal Cardwell <ncardwell@...gle.com> > --- Please dont apply this patch, I'll submit an updated version later. Thanks -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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