From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Miller Subject: Re: [PATCH net] tcp: avoid cwnd undo after receiving ECN Date: Fri, 29 Jan 2016 23:04:19 -0800 (PST) Message-ID: <20160129.230419.1854358229164635050.davem@davemloft.net> References: <1454109110-32068-1-git-send-email-ycheng@google.com> Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, ncardwell@google.com, edumazet@google.com To: ycheng@google.com Return-path: Received: from shards.monkeyblade.net ([149.20.54.216]:42966 "EHLO shards.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751179AbcA3HEU (ORCPT ); Sat, 30 Jan 2016 02:04:20 -0500 In-Reply-To: <1454109110-32068-1-git-send-email-ycheng@google.com> Sender: netdev-owner@vger.kernel.org List-ID: From: Yuchung Cheng Date: Fri, 29 Jan 2016 15:11:50 -0800 > RFC 4015 section 3.4 says the TCP sender MUST refrain from > reversing the congestion control state when the ACK signals > congestion through the ECN-Echo flag. Currently we may not > always do that when prior_ssthresh is reset upon receiving > ACKs with ECE marks. This patch fixes that. > > Signed-off-by: Yuchung Cheng > Signed-off-by: Neal Cardwell > Signed-off-by: Eric Dumazet Applied, thanks.