From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Ian McDonald" Subject: Re: Will RFC1146 (tcp alternative checksum options) be implemented in Linux tcp stack ? Date: Tue, 16 Oct 2007 14:57:56 +1300 Message-ID: <5640c7e00710151857p12a19bf2radf1972835b811d@mail.gmail.com> References: <887901.30138.qm@web55205.mail.re4.yahoo.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: netdev To: "Yanping Du" Return-path: Received: from wa-out-1112.google.com ([209.85.146.179]:1962 "EHLO wa-out-1112.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755467AbXJPB55 (ORCPT ); Mon, 15 Oct 2007 21:57:57 -0400 Received: by wa-out-1112.google.com with SMTP id v27so2202071wah for ; Mon, 15 Oct 2007 18:57:57 -0700 (PDT) In-Reply-To: <887901.30138.qm@web55205.mail.re4.yahoo.com> Content-Disposition: inline Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org On 10/16/07, 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 > > Thanks! > -Yanping > > Yanping, The way that features get added to Linux is that someone interested writes it. You can't just say - is this on the roadmap, as there is no roadmap really! I have been interested in network features from an academic point of view and so I wrote what I needed (along with others) and that was added to the Linux kernel. So have a go at implementing it if you consider it important and come back here with some patches. Then others will help review it until the patches are good. I will let others comment on whether the checksums are a good idea or not. Ian -- Web1: http://wand.net.nz/~iam4/ Web2: http://www.jandi.co.nz Blog: http://iansblog.jandi.co.nz