From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 26 Jan 2001 13:12:24 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 26 Jan 2001 13:12:15 -0500 Received: from penguin.e-mind.com ([195.223.140.120]:14884 "EHLO penguin.e-mind.com") by vger.kernel.org with ESMTP id ; Fri, 26 Jan 2001 13:12:12 -0500 Date: Fri, 26 Jan 2001 19:12:38 +0100 From: Andrea Arcangeli To: Simon Kirby Cc: linux-kernel@vger.kernel.org Subject: Re: ECN Message-ID: <20010126191238.D24774@athlon.random> In-Reply-To: <20010126124426.O2360@marowsky-bree.de> <20010126154447.L3849@marowsky-bree.de> <20010126160342.B7096@pcep-jamie.cern.ch> <14961.37986.469902.496834@pizda.ninka.net> <20010126120556.A13417@stormix.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20010126120556.A13417@stormix.com>; from sim@stormix.com on Fri, Jan 26, 2001 at 12:05:56PM -0500 X-GnuPG-Key-URL: http://e-mind.com/~andrea/aa.gnupg.asc X-PGP-Key-URL: http://e-mind.com/~andrea/aa.asc Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jan 26, 2001 at 12:05:56PM -0500, Simon Kirby wrote: > Hmm... Just wondering: what does TCP then do when it receives this ECN > notification? Try harder, try less? Or does it get a specific packet It will act in the same way if it the packet was dropped (but the packet wasn't dropped). That is quite obviously correct behaviour. The RFC also mentions that different congestion control treatment would be unfair with the non-ECN capable TCP connections (but obviously non-ECN TCP connections are just penalized with the current algorithm so such argument doesn't make much sense to me, said that the standard congestion control looks sane choice and it also avoids a mess in the TCP code internals). Andrea - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/