From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E5041C04A68 for ; Thu, 28 Jul 2022 13:15:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236821AbiG1NPd (ORCPT ); Thu, 28 Jul 2022 09:15:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53534 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236620AbiG1NP3 (ORCPT ); Thu, 28 Jul 2022 09:15:29 -0400 Received: from smtp106.ord1c.emailsrvr.com (smtp106.ord1c.emailsrvr.com [108.166.43.106]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8BF031D0EB for ; Thu, 28 Jul 2022 06:15:28 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=openvpn.net; s=20170822-45nk5nwl; t=1659014127; bh=nVyncxBbFfBP0UJB18/l9WTFsKwCNL1U/OTwv2Q77DA=; h=Date:Subject:To:From:From; b=nsk3DOmjPBZ1GglZRpyKS0n6v0e4IpPjB4XLKnTSIoO29+qoPnsuhsa2CvXbOxSCT LwBjFbO4injAnqKuWEQMnVwE7+fs/M+RoocwPqzbeI/u8N2d7fAJ7eU5/jAi83Lyf3 UwhkTLUop5fYyqoZr8wq3jWQA8nnn5//XCQXxWOU= X-Auth-ID: antonio@openvpn.net Received: by smtp14.relay.ord1c.emailsrvr.com (Authenticated sender: antonio-AT-openvpn.net) with ESMTPSA id C6016C0100; Thu, 28 Jul 2022 09:15:26 -0400 (EDT) Message-ID: <52b9d7c9-9f7c-788e-2327-33af63b9c748@openvpn.net> Date: Thu, 28 Jul 2022 15:16:10 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.11.0 Subject: Re: [RFC 1/1] net: introduce OpenVPN Data Channel Offload (ovpn-dco) Content-Language: en-US To: Andrew Lunn Cc: netdev@vger.kernel.org, David Miller , Jakub Kicinski , linux-kernel@vger.kernel.org References: <20220719014704.21346-1-antonio@openvpn.net> <20220719014704.21346-2-antonio@openvpn.net> From: Antonio Quartulli Organization: OpenVPN Inc. In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Classification-ID: b21c8d6c-fc14-4b0b-8f33-28a996a66e1f-1-1 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Andrew, On 28/07/2022 15:07, Andrew Lunn wrote: > Also, using a mainline driver out of tree is not easy. The code will > make use of the latest APIs, and internal APIs are not stable, making > it hard to use in older kernels. So you end up with out of tree > wrapper code for whatever version of out of tree Linux you decide to > support. Take a look at > > https://github.com/open-mesh-mirror/batman-adv Yeah, this is exactly what we are already doing. We're just trying to keep is as simple as possible for now: https://github.com/OpenVPN/ovpn-dco/blob/master/linux-compat.h Thanks for the pointer anyway (I am already deeply inspired by batman-adv, as you may imagine ;-)), -- Antonio Quartulli OpenVPN Inc.