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 A93EAECAAD4 for ; Sat, 3 Sep 2022 16:44:10 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230247AbiICQoJ (ORCPT ); Sat, 3 Sep 2022 12:44:09 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38234 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229732AbiICQoH (ORCPT ); Sat, 3 Sep 2022 12:44:07 -0400 Received: from mail-ej1-x632.google.com (mail-ej1-x632.google.com [IPv6:2a00:1450:4864:20::632]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D4A9458DDD for ; Sat, 3 Sep 2022 09:44:06 -0700 (PDT) Received: by mail-ej1-x632.google.com with SMTP id fc24so341758ejc.3 for ; Sat, 03 Sep 2022 09:44:06 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date; bh=LiU7+LK7QIZ956P+nAlbuHFlGIUkfFMf+/fB6MzRof4=; b=GVDNt7G1Yms4qMBv4RzWcIc1nwwnjhipXPkWyUkdqmE7OsVWaq8+mwIL4d6+0ChQ6y eycu+Td1TMhcVaic+0VKPDlzsfi4PqhhI0FgshSzVGWmt80pu4iNf677g+xUPSsQVQTV sBviZ+Nez+t5DLKdhxK/BejLorKfLFrpcg3CmadisgJhwQ4O3EwwcJZBOD+qJxAfclIa TzWCgDI3cgo7oSLTl4OVm+paqDeqNVzLsiIc05MWuY4l5YSF7lcVU9ZBCFi6UI9s3xRC LggEIAfGNdYmyZCdhuvFBLGjW91hChwabj4SwzIZkE07LvnGz/OyckeFkeBbAxQM1B4Q QFMg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; 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; bh=LiU7+LK7QIZ956P+nAlbuHFlGIUkfFMf+/fB6MzRof4=; b=HX98FAVfBRLdwqdnVrtfpn7/DrY6w84iG+XgzRsW1VYljopDtmep4HpgTfkS1Pt7EE WmU3E3NjGPU1w/Uke9Ij4UDIprQIQ45ia0OuEFLFkqQrSlW7hnTel9y9GdTXaZR/2RoV T3V9aG4dO3Si+T7LWma/K4OAyiqfIoNTJTjVKouTwCErCsTgEJTfB1mMlbStzkL/PSr+ Q4ieck4xYODtg54z4QWJn4oXJK1lIt5z80/B8IQVr9um6jSTdhSLf3B5o6wbJ1vY6vv7 P+yyteqtM4kJyUVxFpjVuPZ1bXg0O1omd1L7BY1/5KrEW0wZmoWpMrzPWrpjVyAWUEtd FHfA== X-Gm-Message-State: ACgBeo181XxdWJU45kTbY68apwdD1yn1c6b5UUWnyujCQeDmxijkpoWE iu9rZcIvAkFm3W5F1cYl6aWIiXP6HPU= X-Google-Smtp-Source: AA6agR6S/qswmY8Fa8gfTOuXfqrmqSY/59J8EIwgSHJiXKmfiTawJI/iOK97+SjUK5YFrXXiGAZi7A== X-Received: by 2002:a17:907:60c7:b0:739:52ba:cbd0 with SMTP id hv7-20020a17090760c700b0073952bacbd0mr30938681ejc.152.1662223445241; Sat, 03 Sep 2022 09:44:05 -0700 (PDT) Received: from skbuf ([188.27.184.197]) by smtp.gmail.com with ESMTPSA id 9-20020a170906300900b00742a4debae1sm2620049ejz.6.2022.09.03.09.44.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 03 Sep 2022 09:44:04 -0700 (PDT) Date: Sat, 3 Sep 2022 19:44:02 +0300 From: Vladimir Oltean To: Kurt Kanzenbach Cc: "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Andrew Lunn , Vivien Didelot , Florian Fainelli , netdev@vger.kernel.org Subject: Re: [PATCH net-next] net: dsa: hellcreek: Print warning only once Message-ID: <20220903164402.4gmxipv2iol37r4g@skbuf> References: <20220830163448.8921-1-kurt@linutronix.de> <20220831152628.um4ktfj4upcz7zwq@skbuf> <87v8q8jjgh.fsf@kurt> <20220831234329.w7wnxy4u3e5i6ydl@skbuf> <87czcfzkb6.fsf@kurt> <20220901113912.wrwmftzrjlxsof7y@skbuf> <87r10sr3ou.fsf@kurt> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <87r10sr3ou.fsf@kurt> Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org On Sat, Sep 03, 2022 at 03:24:33PM +0200, Kurt Kanzenbach wrote: > > Yes, some IP forwarding of 60 byte frames at line rate gigabit or higher > > should do the trick. Testing with MTU sized packets is probably not > > going to show much of a difference. > > Well, I don't see much of a difference. However, running iperf3 with > small packets is nowhere near line rate of 100Mbit/s. Try something smarter than iperf3, like CONFIG_NET_PKTGEN=y on a link partner as traffic generator. I had this command lying around, I forget exactly what it does. /root/git/net-next/samples/pktgen/pktgen_sample03_burst_single_flow.sh \ -i eth1 -s 64 -m 00:04:9f:05:de:0a -d 20.0.0.2 -t 2 -f 13 -c 4 -p 400 -n 0 -b 4