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 X-Spam-Level: X-Spam-Status: No, score=-6.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 4DC68C433E0 for ; Wed, 10 Mar 2021 09:03:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id EBB7564FF1 for ; Wed, 10 Mar 2021 09:03:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232457AbhCJJCt (ORCPT ); Wed, 10 Mar 2021 04:02:49 -0500 Received: from mail.kernel.org ([198.145.29.99]:59434 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230156AbhCJJCa (ORCPT ); Wed, 10 Mar 2021 04:02:30 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 06B2464FEF; Wed, 10 Mar 2021 09:02:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1615366949; bh=TkA4EcJ+FLBY9RWCgS6XXfVJKoxhsxyug0tNpQ8M1k8=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=OsM3hf4ZNex1ZKTiLum7eJpqEnwYqTyeN5o/iCezg2KQevcntsaOxhzFRYRo3wFxz lIKqG9aQDuuVNJqVbNtQ861KNZJtDLmYd6Gt4TLqeVBSly0vyi54XeUFiXQw+xvwP3 XRvfA16uIkxWkRsLwvtHr7LeOITpRUAMl4QpdOMk= Date: Wed, 10 Mar 2021 10:02:27 +0100 From: Greg KH To: Mike Ximing Chen Cc: netdev@vger.kernel.org, davem@davemloft.net, kuba@kernel.org, arnd@arndb.de, dan.j.williams@intel.com, pierre-louis.bossart@linux.intel.com Subject: Re: [PATCH v10 00/20] dlb: introduce DLB device driver Message-ID: References: <20210210175423.1873-1-mike.ximing.chen@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20210210175423.1873-1-mike.ximing.chen@intel.com> Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On Wed, Feb 10, 2021 at 11:54:03AM -0600, Mike Ximing Chen wrote: > Intel DLB is an accelerator for the event-driven programming model of > DPDK's Event Device Library[2]. The library is used in packet processing > pipelines that arrange for multi-core scalability, dynamic load-balancing, > and variety of packet distribution and synchronization schemes The more that I look at this driver, the more I think this is a "run around" the networking stack. Why are you all adding kernel code to support DPDK which is an out-of-kernel networking stack? We can't support that at all. Why not just use the normal networking functionality instead of this custom char-device-node-monstrosity? What is missing from todays kernel networking code that requires this run-around? thanks, greg k-h