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=-2.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, 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 6D67EC3E8C5 for ; Fri, 27 Nov 2020 23:24:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2E5A52223D for ; Fri, 27 Nov 2020 23:24:12 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="ld9Rd0Dg" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731594AbgK0XXd (ORCPT ); Fri, 27 Nov 2020 18:23:33 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59588 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1731432AbgK0XVo (ORCPT ); Fri, 27 Nov 2020 18:21:44 -0500 Received: from mail-ej1-x643.google.com (mail-ej1-x643.google.com [IPv6:2a00:1450:4864:20::643]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BB5C3C0613D1; Fri, 27 Nov 2020 15:21:43 -0800 (PST) Received: by mail-ej1-x643.google.com with SMTP id d17so7789354ejy.9; Fri, 27 Nov 2020 15:21:43 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=RzsSMH+hukhX+jVFkmT3ne6jmwQz5buCyk3OVQ1T7pQ=; b=ld9Rd0DgQ9RYr32MY2YpGhsiceREihp4mPWaIvlQAVQwtZHPmkMOsV0MlrUNQ16kuE UFu+YcIP4zkOWtaMsol6e0a8DEsi+QIW5dauppW0rULoywlsPI7bOIvO4e5JffGvMmHz I/Evef1PTboLamyDfu5txzEhxS5s0sfd38rXn9f6CWIo3matGEvT+eNtRwcQRZpau75k MERNQvoRy9q3VvbLcL4K5jj6+OmfrYIqD5bLdVNufgmvZPe6QaygPtYqDtwdmMFC6nZj 3yIW9ag+1WqCAuysJFJCOA73N/SDi/jUm3vGszCPDXwDotjJENGGjm2cNN5IgzMENfjY QnLQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=RzsSMH+hukhX+jVFkmT3ne6jmwQz5buCyk3OVQ1T7pQ=; b=j9SN9yoSIj7UT3MLTdk6PrB/iSU2l1TMvnRn0XqYD7oKRldYYXVF6bDdoDO+pzA1U2 SS9MuaacTYCi4XZscvAPlZZGgbHJlOdw7WOvH01Wh9u/f5Ren5eh9M30SMxau8ZVtYr7 gOoKrnK30qAZsqjV1bEU+HUzXQDJMTbSU+KhDKb9xJJZscl5pfPgTpFiW6AY9BwbSPF0 EsTHxNaCk6/ADpI8LCcbxMevMh5ayLP9t/KppPCfAO5L/TJtXio+6jMV4i9xsZSmL1oV TnbfoKlcbG3D3waeimtr/qW0rPI8CYCTWq+5npwy9KIGUzAngpWpy0PTE3I+nCxWtWNy Lovw== X-Gm-Message-State: AOAM530P3tCkiMw+9heZeZQuwF2sdQuCjhxX+wXUhxOqMtdREZvN2FDQ FmfX3bNQT7bfcOWkMG6l2ow= X-Google-Smtp-Source: ABdhPJzP6c/92Eega1if760CFgXx2nCAU15M+gMNrfWXWP+GmabuOn3SRI1MmP87/hc/OmYFIaHNSA== X-Received: by 2002:a17:906:9816:: with SMTP id lm22mr10021265ejb.313.1606519302531; Fri, 27 Nov 2020 15:21:42 -0800 (PST) Received: from skbuf ([188.25.2.120]) by smtp.gmail.com with ESMTPSA id f24sm5204428ejf.117.2020.11.27.15.21.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 27 Nov 2020 15:21:41 -0800 (PST) Date: Sat, 28 Nov 2020 01:21:40 +0200 From: Vladimir Oltean To: Jakub Kicinski Cc: George McCollister , Andrew Lunn , Vivien Didelot , Florian Fainelli , "David S . Miller" , netdev@vger.kernel.org, "open list:OPEN FIRMWARE AND..." Subject: Re: [PATCH net-next v2 2/3] net: dsa: add Arrow SpeedChips XRS700x driver Message-ID: <20201127232140.g6ylpsovaj2tcutr@skbuf> References: <20201126132418.zigx6c2iuc4kmlvy@skbuf> <20201126175607.bqmpwbdqbsahtjn2@skbuf> <20201126220500.av3clcxbbvogvde5@skbuf> <20201127103503.5cda7f24@kicinski-fedora-pc1c0hjn.DHCP.thefacebook.com> <20201127195057.ac56bimc6z3kpygs@skbuf> <20201127133753.4cf108cb@kicinski-fedora-pc1c0hjn.DHCP.thefacebook.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20201127133753.4cf108cb@kicinski-fedora-pc1c0hjn.DHCP.thefacebook.com> Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On Fri, Nov 27, 2020 at 01:37:53PM -0800, Jakub Kicinski wrote: > High speed systems are often eventually consistent. Either because > stats are gathered from HW periodically by the FW, or RCU grace period > has to expire, or workqueue has to run, etc. etc. I know it's annoying > for writing tests but it's manageable. Out of curiosity, what does a test writer need to do to get out of the "eventual consistency" conundrum in a portable way and answer the question "has my packet not been received by the interface or has the counter just not updated"?