From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pb0-f46.google.com (mail-pb0-f46.google.com [209.85.160.46]) by dpdk.org (Postfix) with ESMTP id 0A27A156 for ; Mon, 14 Apr 2014 09:20:50 +0200 (CEST) Received: by mail-pb0-f46.google.com with SMTP id rq2so7853210pbb.5 for ; Mon, 14 Apr 2014 00:20:50 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:message-id:date:from:user-agent:mime-version:to :cc:subject:references:in-reply-to:content-type :content-transfer-encoding; bh=ME7y9hwvj4xboECKQBbrqPHZ8EqIPVzNeqd4W0eLGbU=; b=FI2/qn8ifsyRWpTeZFqm/IvtboJCrsZWApKCmiT6kJTgCvnc0+FKhvV9lHdo1gTwPC hoVqnwbDmc2/pa7f5g06JwdJF2JqiY/lnCTDJWt3ozlpzjXINweTzNdnG1hkkvxxMAtG qA/SrBJOzz4q4D7UFb6aOAOhcMdEFkd4vFcmlx59gXdSY3EpkUT9U6Q9ClTpmXfdhyGh hnNxjMdT2qRvXR5/kX50kXZV+Rh7N4onEzfOz7+oZ5Hg4c6uEbmNh0sVxanCeSHfxSr8 VK1bHe0tJweRpL4QKRBDhw+pXq+9lvNp+nS7fobyDnD6kd13iWpuYaZnormkh78Tsvh8 Lkrw== X-Gm-Message-State: ALoCoQmw2YS506KACTJFJdeBiiBtpuuq0jQ5UOEMjnk/ZkACXR5QkN/nPINvDfyvKD9ysCAJD6CM X-Received: by 10.66.122.1 with SMTP id lo1mr1984844pab.118.1397460050434; Mon, 14 Apr 2014 00:20:50 -0700 (PDT) Received: from [10.16.129.101] (napt.igel.co.jp. [219.106.231.132]) by mx.google.com with ESMTPSA id de5sm31870372pbc.66.2014.04.14.00.20.49 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Mon, 14 Apr 2014 00:20:49 -0700 (PDT) Message-ID: <534B8C52.8070003@igel.co.jp> Date: Mon, 14 Apr 2014 16:20:50 +0900 From: "Tetsuya.Mukawa" User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:24.0) Gecko/20100101 Thunderbird/24.4.0 MIME-Version: 1.0 To: Meir Tseitlin , dev@dpdk.org References: In-Reply-To: X-Enigmail-Version: 1.6 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Subject: Re: [dpdk-dev] Weird behavior of DPDK - ongoing problem 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: Mon, 14 Apr 2014 07:20:51 -0000 Hi Meir, (2014/04/13 19:21), Meir Tseitlin wrote: > The problem is that in 30% of the cases data packet enters the path of > control packet instead of expected answer. Which probably means that after > my packet type check, the mbuf is overwritten before handled properly. If you are using DPDK-1.5, it's nice to update to DPDK-1.6, because pcap pmd of DPDK-1.5 has buffer overflow while receiving data from a target device/file. And the issue was solved with DPDK-1.6 (in both intel original code and dpdk.org code). Also if multiple processes/threads run on a same cpu, probably, it could cause a problem like you're facing. Regards, Tetsuya