From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id 930C242ECF; Thu, 20 Jul 2023 17:45:07 +0200 (CEST) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 70B9E40685; Thu, 20 Jul 2023 17:45:07 +0200 (CEST) Received: from mail-pg1-f177.google.com (mail-pg1-f177.google.com [209.85.215.177]) by mails.dpdk.org (Postfix) with ESMTP id 294F8400D6 for ; Thu, 20 Jul 2023 17:45:06 +0200 (CEST) Received: by mail-pg1-f177.google.com with SMTP id 41be03b00d2f7-55b0e7efb1cso486215a12.1 for ; Thu, 20 Jul 2023 08:45:05 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=networkplumber-org.20221208.gappssmtp.com; s=20221208; t=1689867905; x=1690472705; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:subject:cc:to:from:date:from:to:cc:subject:date :message-id:reply-to; bh=e+GTlrVRQ04CovPHEkGji3uuZ1szry3Md6yKtfTvpAQ=; b=KTDHftZZtKk3npUQ/2z6d2UJ9K0MUKPzYLFYRZFyoCqNrLlC7+80tuo4CtHlKUir3d 3BBu7q0x46IuwAzpc2/jjKRc3zNjBii4kYIm/QEUS3JqMvfW8Mxu5/l3PASHmMWWszHq vvfQmNxztkS87tRc5mjnj3f/ifGViJspvxB0A15DnJswRIAsaf06TmWbuilsBZ21fNe8 UiW/wffBob28VkwdfEXI/JUgLwkt+isaVqaGSlHIUHrrF/aA0uzrMKyHin+Er9kaah4E LG1U8rMRlhivL5TBjRQGCNM2KQ3pqZZoUKkGcg3r1+oCBdtp8gD7/itrRgM2fUzDeQ7n 2VhQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1689867905; x=1690472705; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:subject:cc:to:from:date:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=e+GTlrVRQ04CovPHEkGji3uuZ1szry3Md6yKtfTvpAQ=; b=P07DsUz3HRb75pyxmQPvztjAuuDJqKwwhA/EwCdImDyoufLFWgl0UFMiuS5J2H/TbN NZRVJR/XMFSkILAPxadVmXE4GE76XlmHNq1YhSFRvMkhTzGb+7PUUPZjGG4pDgjzXPUC zyJHLhNxMZFrIRzLkyMWwT1Tt+TipN71PN7QaadShRjvyiHEnMxMAnQOIve0W3fWmJ2Z rGtCJkbHOyS7c7/Rnl4sRYv/kDpU7KBLWLKC++G6u9V22H3+Le7dXKV+b7cMxyvHysKX OmZ3viQ9lnQJupl2dgFmdfkpBTMz1LNtpgsyA7KJS2CadVpjG2LkfUyG+G7jMX4SglpF JEGg== X-Gm-Message-State: ABy/qLasTdEwwGL12y7Ao8TIOSiHZ0/WJ8E0j/1siia+l+u+9xpubAun F3Nz4wE5NY12rPc60wXW8ylchw== X-Google-Smtp-Source: APBJJlGdnj/YBelJ8DvQIXC4yoRRk1XPXVcSig8uuOW+SK091G4g6ozM2pee7n/Vfi5lmVVS0cQ4Cw== X-Received: by 2002:a05:6a20:12cb:b0:131:44f2:8691 with SMTP id v11-20020a056a2012cb00b0013144f28691mr3036726pzg.37.1689867905151; Thu, 20 Jul 2023 08:45:05 -0700 (PDT) Received: from hermes.local (204-195-127-207.wavecable.com. [204.195.127.207]) by smtp.gmail.com with ESMTPSA id k24-20020aa78218000000b0064d32771fa8sm1327664pfi.134.2023.07.20.08.45.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 20 Jul 2023 08:45:05 -0700 (PDT) Date: Thu, 20 Jul 2023 08:45:03 -0700 From: Stephen Hemminger To: Mingjin Ye Cc: dev@dpdk.org, qiming.yang@intel.com, yidingx.zhou@intel.com, Jingjing Wu , Beilei Xing , Bruce Richardson , Konstantin Ananyev Subject: Re: [POC v2] net/iavf: support no data path polling mode Message-ID: <20230720084503.5f27b0e8@hermes.local> In-Reply-To: <20230720100815.440778-1-mingjinx.ye@intel.com> References: <20230717093651.338017-1-mingjinx.ye@intel.com> <20230720100815.440778-1-mingjinx.ye@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org On Thu, 20 Jul 2023 10:08:14 +0000 Mingjin Ye wrote: > Introduces a devargs "no-poll-on-link-down" in iavf PMD. When this > flag is set, the PMD switches to no-poll mode when the link state is > down (rx/tx burst returns to 0 immediately). When the link state > returns to normal, PMD switches to normal rx/tx burst state. > > Signed-off-by: Mingjin Ye There is not enough explanation of this. Why is this necessary? Why is it unique to the iavf device and not true of other devices? Where is the documentation?