Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262110AbTELMgF (ORCPT ); Mon, 12 May 2003 08:36:05 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262111AbTELMgF (ORCPT ); Mon, 12 May 2003 08:36:05 -0400 Received: from dp.samba.org ([66.70.73.150]:48273 "EHLO lists.samba.org") by vger.kernel.org with ESMTP id S262110AbTELMgE (ORCPT ); Mon, 12 May 2003 08:36:04 -0400 From: Paul Mackerras MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <16063.38221.73659.403481@argo.ozlabs.ibm.com> Date: Mon, 12 May 2003 22:36:29 +1000 To: Frank Cusack Cc: linux-kernel@vger.kernel.org Subject: Re: MPPE in kernel? In-Reply-To: <20030512045929.C29781@google.com> References: <20030512045929.C29781@google.com> X-Mailer: VM 7.15 under Emacs 21.3.2 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1160 Lines: 28 Frank Cusack writes: > What are the chances of getting MPPE (PPP encryption) into the 2.4.21 > and/or 2.5.x kernels? First, are there any patent issues that you are aware of? > I'm not so concerned about getting any of that included though; what > I really want is for the changes to ppp_generic.c to be included. > It's not so much fun to have to maintain patches. The changes required > are generic, don't require crypto, and are generally uneventful. Getting > the crypto bits and the mppe compressor itself included would just be > a bonus. The fundamental problem is that MPPE is misusing CCP (compression control protocol) for something for which it was never intended. The specific place where this is a problem is that the compression code in ppp_generic doesn't guarantee that it will never send a packet out uncompressed, but MPPE requires that. How do you get around that problem? Regards, Paul. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/