From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758564AbZHRB1o (ORCPT ); Mon, 17 Aug 2009 21:27:44 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756765AbZHRB1o (ORCPT ); Mon, 17 Aug 2009 21:27:44 -0400 Received: from 74-93-104-97-Washington.hfc.comcastbusiness.net ([74.93.104.97]:56627 "EHLO sunset.davemloft.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752223AbZHRB1n (ORCPT ); Mon, 17 Aug 2009 21:27:43 -0400 Date: Mon, 17 Aug 2009 18:27:54 -0700 (PDT) Message-Id: <20090817.182754.50348941.davem@davemloft.net> To: tim.bird@am.sony.com Cc: r.schwebel@pengutronix.de, vda.linux@googlemail.com, linux-kernel@vger.kernel.org, linux-embedded@vger.kernel.org, arjan@linux.intel.com, kernel@pengutronix.de, netdev@vger.kernel.org Subject: Re: new ipdelay= option for faster netboot From: David Miller In-Reply-To: <4A8A02CA.7040305@am.sony.com> References: <4A89DB15.6060101@am.sony.com> <20090817.180323.253692704.davem@davemloft.net> <4A8A02CA.7040305@am.sony.com> X-Mailer: Mew version 6.2.51 on Emacs 22.1 / Mule 5.0 (SAKAKI) 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: Tim Bird Date: Mon, 17 Aug 2009 18:24:26 -0700 > David Miller wrote: >> I have card/switch combinations that take up to 10 seconds to >> negotiate a proper link. > > What types of delays are these timeouts supposed to > cover? The problem is that if you don't first give at least some time for the link to come up, the remaining time it takes the link to come up will end up chewing into the actual bootp/dhcp protocol timeouts. And that's what we're trying to avoid.