From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S964878AbWFNFSg (ORCPT ); Wed, 14 Jun 2006 01:18:36 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S964876AbWFNFSg (ORCPT ); Wed, 14 Jun 2006 01:18:36 -0400 Received: from ns.suse.de ([195.135.220.2]:7371 "EHLO mx1.suse.de") by vger.kernel.org with ESMTP id S964874AbWFNFSf (ORCPT ); Wed, 14 Jun 2006 01:18:35 -0400 From: Andi Kleen To: David Miller Subject: Re: 2.6.17: networking bug?? Date: Wed, 14 Jun 2006 07:18:21 +0200 User-Agent: KMail/1.9.3 Cc: lkml@rtr.ca, jheffner@psc.edu, torvalds@osdl.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org References: <448F0D4B.30201@rtr.ca> <20060613.142603.48825062.davem@davemloft.net> In-Reply-To: <20060613.142603.48825062.davem@davemloft.net> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200606140718.21609.ak@suse.de> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org > Also, as John Heffner mentioned, even if we could detect the broken > boxes you can't just "turn off window scaling" after it's been > negotiated. It's immutably active for the entire connection once > enabled. In theory you could set a bit in the dst entry and not use it next time you connect to that host. That would be ok for web browsing at least when creates new connections all the time. But it's unclear how to even detect this situation reliably e.g. you don't want to disable it just because there was a bit of packet loss on a connection to a particular host earlier and there is no clear heuristic to detect that this particular problem happened. > So the broken boxes, which to be honest are few and far between these > days, need to go, they really do. Agreed. -Andi