From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wm0-f43.google.com (mail-wm0-f43.google.com [74.125.82.43]) by dpdk.org (Postfix) with ESMTP id 5C6D4568D for ; Fri, 15 Jan 2016 17:54:11 +0100 (CET) Received: by mail-wm0-f43.google.com with SMTP id f206so28017730wmf.0 for ; Fri, 15 Jan 2016 08:54:11 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=to:from:subject:message-id:date:user-agent:mime-version :content-type:content-transfer-encoding; bh=UsOUhzOch77fuecf3thj4QeqEeYwjAjIFR2hb2tlmlg=; b=h1hNot73MVJi6kkZmcpZQzJQv5qxzUTA6wCJigpklmDtKNSxVGPa9nuMvj29KB1E/r SxxpCT76eAL3nqhrfzvmEqzS0ysThB/pFRg6EpFUuo51pMztQKx1RraGs7RLZbXG37Pn Vt3ZFMWUVBj13d68wf9RcSpPzA/ON4ThLZSsA= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:to:from:subject:message-id:date:user-agent :mime-version:content-type:content-transfer-encoding; bh=UsOUhzOch77fuecf3thj4QeqEeYwjAjIFR2hb2tlmlg=; b=JDnlc9XaDAmtLq/ZH2c50FVaxL+Hcfz/n/DIT/RijHjOXiQ1sfRjGgDThU4IdUx7Az cizWnNJ0hQoYJHpXdt5KbOmIxhVeMYoe2/b/tu7EhFJG5bQ0nuJO6t14v1KOm1lRnNFZ A7/fOBO/bUWqv/DdNAVGEseWvdI0wI1bruXVRPuObE4hRI7dckO3yEiT4ppNIS5JjmAr n1zu6asjHWOa12D+7DC8vX+DTttEIJQQoKe+IBUoh9dZVhnRZtP/nYRi/pdxP2dicemX 10g/vK2vMe9xj7P/TEb5HLXHyEOPcIl+5RL9y5SrFrV0IWhe+VyFMqrkcIbIV5Tzmh/e 5LiA== X-Gm-Message-State: AG10YORGv/0eM/fjoLkEIIdkBJVSfKskfoaGqGwvH+ZNO7s6lJr3h1btfZDe3esZ59x9HRfv X-Received: by 10.28.14.138 with SMTP id 132mr4186217wmo.25.1452876851182; Fri, 15 Jan 2016 08:54:11 -0800 (PST) Received: from [172.18.45.59] ([195.11.233.227]) by smtp.googlemail.com with ESMTPSA id q129sm3328523wmd.14.2016.01.15.08.54.10 for (version=TLSv1/SSLv3 cipher=OTHER); Fri, 15 Jan 2016 08:54:10 -0800 (PST) To: dev@dpdk.org From: Zoltan Kiss Message-ID: <56992433.7060206@linaro.org> Date: Fri, 15 Jan 2016 16:54:11 +0000 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.5.1 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Subject: [dpdk-dev] Sending and receiving on the same port at the same time, from different threads X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 15 Jan 2016 16:54:11 -0000 Hi, I've been asked this question, and I realized I'm not sure about the answer. In other words: can you call rte_eth_tx_burst() and rte_eth_tx_burst() on the same port at the same time from different threads? In theory it seems possible, as you still access different queues (an RX and a TX one), and at least taking a glance at ixgbe vector functions, they don't seem to use common resources while doing RX or TX. But I'm not sure that it's generally true, although I always assumed that it should be true. Have anyone seen a device where it wasn't true? Regards, Zoltan