From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Hemminger Subject: Re: Will RFC1146 (tcp alternative checksum options) be implemented in Linux tcp stack ? Date: Mon, 15 Oct 2007 20:38:15 -0700 Message-ID: <47143227.3060501@linux-foundation.org> References: <887901.30138.qm@web55205.mail.re4.yahoo.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org To: Yanping Du Return-path: Received: from smtp2.linux-foundation.org ([207.189.120.14]:48398 "EHLO smtp2.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757681AbXJPDiA (ORCPT ); Mon, 15 Oct 2007 23:38:00 -0400 In-Reply-To: <887901.30138.qm@web55205.mail.re4.yahoo.com> Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org Yanping Du wrote: > Hi, > > We found the standard 16-bit tcp checksum is not > strong enough in some cases. Is there any roadmap on > implementing RFC1146 (tcp alternative checksum > options) in Linux tcp stack ? If yes, how soon will > that be in ? > > Please kindly copy reply to my email address as I've > not subscribed the netdev@ mailing list at present. > > http://www.faqs.org/rfcs/rfc1146.html > > You would of course lose all the hardware offload of checksumming since no hardware supports alternative checksums.