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 78632C4167B for ; Tue, 28 Nov 2023 08:57:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344327AbjK1I5i (ORCPT ); Tue, 28 Nov 2023 03:57:38 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34790 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344322AbjK1I5f (ORCPT ); Tue, 28 Nov 2023 03:57:35 -0500 Received: from mail-lf1-x131.google.com (mail-lf1-x131.google.com [IPv6:2a00:1450:4864:20::131]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8ED08182 for ; Tue, 28 Nov 2023 00:57:41 -0800 (PST) Received: by mail-lf1-x131.google.com with SMTP id 2adb3069b0e04-50baa2a278bso3952916e87.0 for ; Tue, 28 Nov 2023 00:57:41 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ferroamp-se.20230601.gappssmtp.com; s=20230601; t=1701161860; x=1701766660; darn=vger.kernel.org; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date:message-id:reply-to; bh=nZ5f4xCIO2ZXm2cUVIZd9fOfVKkANnuLxl9JfSDH3H4=; b=BykxVZt3ADcr/JfZmgteC6QClsl4e0+e/lD8tk1ttdCiE2NhUj1i91XVxlakBisFAR NyFmWPeUm6xalZUM9K7w+d74hw6yBaCNzco+VL+8CPDT5QL4cONU8Z1t/fonepBwiF5X eE9847dKF8noCvO83/g5gEpTfLIL+O+h2XlmgAkGXyk0j57HEFbvdcgu0LaZqD+AFXLn s0gVIreJKHntV4YmTwVrS41djxJSNSNnR4TSvvK4mKNFav0JHhkdtAcOOLlSJyuQSoRW 8Qmz+nGgFGbVnhXCm76lfQFGxPx5LUi7yxUQM7yv3dbX1wW++RTN7THv10KExg/SAV6n Pwww== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1701161860; x=1701766660; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=nZ5f4xCIO2ZXm2cUVIZd9fOfVKkANnuLxl9JfSDH3H4=; b=ktcMeg+hwR6llupJG3jHOlsuFn1jACso0TqcQzmX1wYwm+gXBhWI4/mOXeQokeUSld fFICKNvz3xKz7QCqNn7hiZ8VkYjU/r1YPQ/PpkzwIHzRtGdf3GM6vp26cvZP+qLlQtpx XjWoeqiZi/hFmOS9eIXRIs9DYpiaNoplEjrB3wEgYiwaiMze8TX3TRRO7eKQ/wVL/JUj jdCEa5agrT4/KLBjWPi4+uu55SZdEjRpjAANgBdFDxa0OxXVkNDQsgHobZ4KHnrM3J5Z Ndyq2KkfKYVwpsz2gDrzVp34bjwc6ikLUEv9T3fUf1DlEtCBK35Lb0wD8lgIuPaipHuB 6hKw== X-Gm-Message-State: AOJu0Yxo5ss9QnazfiGKwVRDWhC8UW2leNq3uqpyVAP3zsCPjNFWVg0G aYKPuBdbGQTT3roki0rb+j2q0A== X-Google-Smtp-Source: AGHT+IF34nWU7hOhaSOTP7wYX7j9yWUCipg9dusjDeaF8bjTmFBJ66VMTNPJbpiQ+ehJdbpDj763XQ== X-Received: by 2002:a19:5e03:0:b0:507:a003:57a2 with SMTP id s3-20020a195e03000000b00507a00357a2mr5918449lfb.52.1701161859761; Tue, 28 Nov 2023 00:57:39 -0800 (PST) Received: from debian ([185.117.107.42]) by smtp.gmail.com with ESMTPSA id y26-20020ac2447a000000b0050aaaa33204sm1776147lfl.64.2023.11.28.00.57.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 28 Nov 2023 00:57:39 -0800 (PST) Date: Tue, 28 Nov 2023 09:57:35 +0100 From: =?iso-8859-1?Q?Ram=F3n?= Nordin Rodriguez To: Andrew Lunn Cc: Heiner Kallweit , Russell King , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , netdev@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 0/3] net: microchip_t1s: additional phy support and collision detect handling Message-ID: References: <20231127104045.96722-1-ramon.nordin.rodriguez@ferroamp.se> <270f74c0-4a1d-4a82-a77c-0e8a8982e80f@lunn.ch> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <270f74c0-4a1d-4a82-a77c-0e8a8982e80f@lunn.ch> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Nov 27, 2023 at 05:03:54PM +0100, Andrew Lunn wrote: > > * 3-4 nodes (depending on how many usb ports and dongles I have) > > * run iperf with long cables and CSMA/CD > > * run iperf with long cables and CMSA/No CD > > > > I'll report back the results. Anything you'd like to add/focus on with > > evaluation? > > Humm, thinking about how CSMA/CD works... > > Maybe look at what counters the MAC provides. Does it have collisions > and bad FCS? A collision should result in a bad FCS, if you are not > using CD. So if things are working correctly, the count for CD should > move to FCS if you turn CD off. If CD is falsely triggering, FCS as a > % should not really change, but you probably get more frames over the > link? > That is some really cool input, I have to do some datasheet digging and hacking. I'll try to set everything up today, tomorrow I can hang in the lab after hours and test things out! Partihban suggested that Microchips support might be able to help with testing, might give them a ping soon as I a solid plan. Really appreciate the insight! R