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 AAAAEC19F28 for ; Thu, 28 Jul 2022 03:09:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237913AbiG1DJ5 (ORCPT ); Wed, 27 Jul 2022 23:09:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57730 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237869AbiG1DJw (ORCPT ); Wed, 27 Jul 2022 23:09:52 -0400 Received: from mail-pl1-x635.google.com (mail-pl1-x635.google.com [IPv6:2607:f8b0:4864:20::635]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 037D55C36B for ; Wed, 27 Jul 2022 20:09:51 -0700 (PDT) Received: by mail-pl1-x635.google.com with SMTP id w10so695162plq.0 for ; Wed, 27 Jul 2022 20:09:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=X9ZKQ3GKnl/MtSQ9gY0vccKfv9CguoiZDMMIeqqSPt0=; b=k9uT9QfiGf6YUIGfnIzUBlwtBLwOIPdTKXdbG1rxFuXRM0AdjkuhuEaglbZoDKZm2F MXmnThnQAarvkG+oYjcg3g993zlaV8rdUd2wQxuxc9xQtyHOSWMzO2HL6A9ikjLn4LMO r3YVUVGMf4V+o/+Kt10Nu6Gl5KJki94iyM3vS29Qg2uHp7xihn16r0mafslpBuQUM9e7 uRTZfaisFBRqLAOz2wGrCD5PHKH4UwOE0sQUF3Tc6r2dUKYZbyJ4VbK+p0uPcstq/o7G XYkcW94CGKy0/+knNOqTNFGwPfn2sgJGlqjVH9xMzFbtjaTP1oxHYZzJ6hpnKwxfAZeJ YB0w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=X9ZKQ3GKnl/MtSQ9gY0vccKfv9CguoiZDMMIeqqSPt0=; b=YqnRIwYfXdu+VrYx3HbZ/2mCUNAAE5cfOxhGiNU4hOMEu2ZteoS8tRBU5ydP2FXBEY mMQ1haJZIB4pFBNID4zS1Pz923bhnau00agTwyBe+xx6qrIcjZveWIv74bs2vxsSDLvM LzYyqHYNjOE5+TTgXBxTcrF6+es3uSFLhxzewgfAcawWzXcsr8gwp1xbI04exuNIYEV/ haBByK8HOIiN1z/osiDO4xFrDhkvp2YoeF2IGzYEx7emE5gb9Ai4VZCUzKfhNkPiadkK LWBjvArFFBWIZ7PdyTAmN6zjmREPnP03v7oPNJGTKkO/6AsgctfJEGYpj3CqWfJkQ6H/ nTxw== X-Gm-Message-State: AJIora8ZXV89Nr3lcVrAR5kGqr6JbajMycF5a/d1+HTqHH4gXsYCvkJR q2Q0GDHjbqQfgzSir4TB3oY= X-Google-Smtp-Source: AGRyM1uZJXMR0J7aBj+X4HDG9uP3WGXA88uQDTtls6U8CviRADOGq44uGb4dRBOG2/9ONciVWumbiA== X-Received: by 2002:a17:903:2352:b0:16d:80f0:c8a4 with SMTP id c18-20020a170903235200b0016d80f0c8a4mr15328060plh.89.1658977790913; Wed, 27 Jul 2022 20:09:50 -0700 (PDT) Received: from hoboy.vegasvil.org ([2601:640:8200:33:e2d5:5eff:fea5:802f]) by smtp.gmail.com with ESMTPSA id p2-20020a170902780200b0016c0eb202a5sm14518237pll.225.2022.07.27.20.09.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 27 Jul 2022 20:09:50 -0700 (PDT) Date: Wed, 27 Jul 2022 20:09:47 -0700 From: Richard Cochran To: Ido Schimmel Cc: netdev@vger.kernel.org, davem@davemloft.net, kuba@kernel.org, pabeni@redhat.com, edumazet@google.com, petrm@nvidia.com, amcohen@nvidia.com, danieller@nvidia.com, mlxsw@nvidia.com Subject: Re: [PATCH net-next 0/9] mlxsw: Add PTP support for Spectrum-2 and newer ASICs Message-ID: References: <20220727062328.3134613-1-idosch@nvidia.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On Wed, Jul 27, 2022 at 05:44:49PM +0300, Ido Schimmel wrote: > Right. The hardware can support a TC operation, but I did not find any > Linux interfaces to configure it (did I miss something?) nor got any > requirements to support it at the moment. linuxptp can operate as a TC, but it sounds like your HW does E2E TC without any software support. P2P TC does need SW support, because the ports must generate peer delay requests. Thanks, Richard