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 145A5C636CC for ; Tue, 31 Jan 2023 22:37:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229884AbjAaWh0 (ORCPT ); Tue, 31 Jan 2023 17:37:26 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60728 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231938AbjAaWhR (ORCPT ); Tue, 31 Jan 2023 17:37:17 -0500 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0943755299 for ; Tue, 31 Jan 2023 14:36:26 -0800 (PST) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 545C7616FD for ; Tue, 31 Jan 2023 22:36:25 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id ECB9FC433D2; Tue, 31 Jan 2023 22:36:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1675204584; bh=37fS1gAIHcQvpOlYCTDcAngslBFREIEnHUHiUxOynKI=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=tsZy9kgDJBW46UyOrDUIjXO6taHh4yOh4MfK9z1Dwl/B94zXXNcQzZl3X7WBmmVty CDIpKpwjtdSdV+qbSDguh3t9xLAENlBoZZHumBtB49mUmE5GC6+y0MvaOFhH51xkhu G86DE7xCNoKMa5p3T/pUzKZl3VXLR9nM6kcWOq0GSBOWhHD8x9UjJ6HD+vpcz5QC33 4GpRojzTLIR96PPtTeAYfwMxM3Ey7iDLB+Ji2BA17wGfj1U5Tf2TaZ9Mb0ivB5HpgU ITbEMo1FkHFkIR0j58cj3FHWGngnDP/1u53a4r+VknP9wubEJWQxfQ52Jq0JOCHaye J+pMoR0JDBmUQ== Date: Tue, 31 Jan 2023 14:36:23 -0800 From: Jakub Kicinski To: Jamal Hadi Salim Cc: John Fastabend , "Singhai, Anjali" , Toke =?UTF-8?B?SMO4aWxhbmQtSsO4cmdlbnNlbg==?= , Jamal Hadi Salim , Jiri Pirko , Willem de Bruijn , Stanislav Fomichev , "netdev@vger.kernel.org" , "kernel@mojatatu.com" , "Chatterjee, Deb" , "Limaye, Namrata" , "khalidm@nvidia.com" , "tom@sipanda.io" , "pratyush@sipanda.io" , "xiyou.wangcong@gmail.com" , "davem@davemloft.net" , "edumazet@google.com" , "pabeni@redhat.com" , "vladbu@nvidia.com" , "simon.horman@corigine.com" , "stefanc@marvell.com" , "seong.kim@amd.com" , "mattyk@nvidia.com" , "Daly, Dan" , "Fingerhut, John Andy" Subject: Re: [PATCH net-next RFC 00/20] Introducing P4TC Message-ID: <20230131143623.738f232e@kernel.org> In-Reply-To: References: <63d747d91add9_3367c208f1@john.notmuch> <87pmawxny5.fsf@toke.dk> <878rhkx8bd.fsf@toke.dk> <87wn53wz77.fsf@toke.dk> <63d8325819298_3985f20824@john.notmuch> <87leljwwg7.fsf@toke.dk> <63d85b9191319_3d8642086a@john.notmuch> <20230130201224.435a4b5e@kernel.org> <20230131111020.2821ea17@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On Tue, 31 Jan 2023 17:32:52 -0500 Jamal Hadi Salim wrote: > > > Sorry didnt finish my thought here, wanted to say: The loading of the > > > P4 binary over devlink drew (to some people) suspicion it is going to > > > be used for loading kernel bypass. > > > > The only practical use case I heard was the IPU. Worrying about devlink > > programming being a bypass on an IPU is like rearranging chairs on the > > Titanic. > > BTW, I do believe FNICs are heading in that direction as well. > I didnt quiet follow the titanic chairs analogy, can you elaborate on > that statement? https://en.wiktionary.org/wiki/rearrange_the_deck_chairs_on_the_Titanic