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=-4.1 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE, SPF_PASS autolearn=unavailable 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 DD69CC282CE for ; Tue, 4 Jun 2019 21:00:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id B31882075B for ; Tue, 4 Jun 2019 21:00:11 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="bBb19qUl" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726502AbfFDVAI (ORCPT ); Tue, 4 Jun 2019 17:00:08 -0400 Received: from mail-pf1-f194.google.com ([209.85.210.194]:44689 "EHLO mail-pf1-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726179AbfFDVAH (ORCPT ); Tue, 4 Jun 2019 17:00:07 -0400 Received: by mail-pf1-f194.google.com with SMTP id t16so4599803pfe.11; Tue, 04 Jun 2019 14:00:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:openpgp:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=pUm0A2fiHDD5iuDzT1paXS/sbVY5jmeSfZnM1voD+pE=; b=bBb19qUlZ4wCwYJyGvkMlJZk5uWtE5f0xVnPHMMgaILkUKWuYi0WQuGpSZ01NDDyi0 WyfC8e3PSA7PutMOcQkfvOd4Ju45+w6A6F97PUBYJaBU++vdjtKKDpGmUJNNoMYfKlLE 3yL9VAI/vW8BWpVGf42cRe37zIu0WW0VbZUfW9nRLKG1IR8FAR121IbRT1TTcCPW3H+B wWia9HRNxUXFuLZnjsQGC5C2inRaUgCVswlS9a6s9CdptTruJSBL0I2QWd2s32tjmjac q02PYj2bpTLZITaoNDrmc/DzeMWRBbghxu2tzjx/29UjmzhvtXx+CoGrHhGCPeRv/Dv6 yrkQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:openpgp:message-id :date:user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=pUm0A2fiHDD5iuDzT1paXS/sbVY5jmeSfZnM1voD+pE=; b=iOcmh2cNXcljkpC7utqICYHjaP9Y3NMwK3SFSaZTnimKGTxaxCoeBqz8E2aSvs6btC iK8ERpE4O7UOIZKtOieTiontTTrlOJb369n9VD8/wN8f8q4Th+A21HsNmfOSV5gouySR 8vakP+hNZaTrid83FyhXlWkSe2v4POpAklGk/sulDHJoETBIFAYcBLiWn38VEXVBnjU5 j82xf+3aUMifmxH6Y0D1mPrzOswx+6ExFrdRr2QQqbIAFUvN30WTnZH17XC6tlomosWL ofsInOHPMZVXBlsW2rOwoA2BYyByrEL0eso7TqIEOnXupjfbw3mxs68sR2PnRVICQnZ5 TZYQ== X-Gm-Message-State: APjAAAWrUX5yMJAH0RdML3tAaNR/ofgHdb+HTV9CnbdH4EWzMFzABez3 6Me2KEa+216HAIQhgqHzBSga5czI X-Google-Smtp-Source: APXvYqxQ/Hcqa+12EnpAK4GsuwxyHv31ipziKZP6NNP9siDbIFDgRygQRpYG27lB/deQYvZCtRPuiA== X-Received: by 2002:a65:5003:: with SMTP id f3mr678683pgo.336.1559682006712; Tue, 04 Jun 2019 14:00:06 -0700 (PDT) Received: from [192.168.1.3] (ip68-101-123-102.oc.oc.cox.net. [68.101.123.102]) by smtp.gmail.com with ESMTPSA id i22sm18735149pfa.127.2019.06.04.14.00.05 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 04 Jun 2019 14:00:06 -0700 (PDT) Subject: Re: [PATCH v3 net-next 10/17] net: dsa: sja1105: Build a minimal understanding of meta frames To: Vladimir Oltean , vivien.didelot@gmail.com, andrew@lunn.ch, davem@davemloft.net, richardcochran@gmail.com, john.stultz@linaro.org, tglx@linutronix.de, sboyd@kernel.org Cc: linux-kernel@vger.kernel.org, netdev@vger.kernel.org References: <20190604170756.14338-1-olteanv@gmail.com> <20190604170756.14338-11-olteanv@gmail.com> From: Florian Fainelli Openpgp: preference=signencrypt Message-ID: <12eaf60b-83e9-dd93-dd93-56a19158d307@gmail.com> Date: Tue, 4 Jun 2019 14:00:04 -0700 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:60.0) Gecko/20100101 Thunderbird/60.7.0 MIME-Version: 1.0 In-Reply-To: <20190604170756.14338-11-olteanv@gmail.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On 6/4/2019 10:07 AM, Vladimir Oltean wrote: > Meta frames are sent on the CPU port by the switch if RX timestamping is > enabled. They contain a partial timestamp of the previous frame. > > They are Ethernet frames with the Ethernet header constructed out of: > > - SJA1105_META_DMAC > - SJA1105_META_SMAC > - ETH_P_SJA1105_META > > The Ethernet payload will be decoded in a follow-up patch. > > Signed-off-by: Vladimir Oltean Reviewed-by: Florian Fainelli -- Florian