From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752377Ab0DJWrK (ORCPT ); Sat, 10 Apr 2010 18:47:10 -0400 Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:52959 "EHLO sunset.davemloft.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752063Ab0DJWrI (ORCPT ); Sat, 10 Apr 2010 18:47:08 -0400 Date: Sat, 10 Apr 2010 15:47:09 -0700 (PDT) Message-Id: <20100410.154709.201110995.davem@davemloft.net> To: cristiklein@gmail.com Cc: linux-kernel@vger.kernel.org, netdev@vger.kernel.org Subject: Re: [PATCH] tcp: add setsockopt to disable slow start after idle From: David Miller In-Reply-To: <4BC06A5F.6070804@gmail.com> References: <1270863015-19597-1-git-send-email-cristiklein@gmail.com> <20100409.221307.246951787.davem@davemloft.net> <4BC06A5F.6070804@gmail.com> X-Mailer: Mew version 6.3 on Emacs 23.1 / Mule 6.0 (HANACHIRUSATO) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Cristian KLEIN Date: Sat, 10 Apr 2010 14:09:03 +0200 > Could you please explain me why it is dangerous? To me it seems that > it's just like allowing applications to disable NAGLE or to choose a > congestion control algorithm. Because you can cause undue congestion to other people on the network because you are believing path information that has been outdated and has not been validated by sending data for a certain amount of time.