From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mta01.ornl.gov (mta01.ornl.gov [128.219.177.14]) by dpdk.org (Postfix) with ESMTP id 8B22B91F5 for ; Mon, 14 Dec 2015 19:51:55 +0100 (CET) X-SG: RELAYLIST X-IronPort-AV: E=Sophos;i="5.20,428,1444708800"; d="scan'208";a="118060201" Received: from emgwy1.ornl.gov ([160.91.254.9]) by iron1.ornl.gov with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 14 Dec 2015 13:51:54 -0500 Received: from [160.91.76.47] (lumos.ornl.gov [160.91.76.47]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by emgwy1.ornl.gov (Postfix) with ESMTPS id 3pKBf26bcYz7tH4 for ; Mon, 14 Dec 2015 13:51:54 -0500 (EST) From: Lawrence MacIntyre To: users@dpdk.org Message-ID: <566F0FCA.4010706@ornl.gov> Date: Mon, 14 Dec 2015 13:51:54 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.4.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Subject: [dpdk-users] Jumbo Packet Support X-BeenThere: users@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: usage discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 14 Dec 2015 18:51:55 -0000 Hi: I am attempting to use DPDK v2.1.0 and noticed that there appears to be nascent support for jumbo packets. For example, in the example application l2fwd, the comments reference an EAL parameter --enable-jumbo. However, in the EAL library routines, that parameter doesn't exist. I looked into the librte_ether/rte_ethdev.c routine and found that if I modify the l2fwd example as so: modify Line 119: .jumbo_frame = 0 to .jumbo_frame = 1, .max_rx_pkt_len = 9000, that the program will compile and run, but any packets larger than 2006 bytes are truncated. What do I need to do in order to make the program support jumbo packets (9000 bytes in my case)? Or is there a different but better way to support 9000 byte packets at rates close to 10 Gb/s? Thanks, Lawrence -- Lawrence MacIntyre macintyrelp@ornl.gov Oak Ridge National Laboratory 865.574.7401 Cyber Space and Information Intelligence Research Group