From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp-fw-9102.amazon.com (smtp-fw-9102.amazon.com [207.171.184.29]) by dpdk.org (Postfix) with ESMTP id 67BED156 for ; Thu, 21 Nov 2013 19:05:55 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1385057214; x=1416593214; h=from:to:subject:date:message-id:mime-version; bh=sR9jqO2y8Fh9mM9juRvi9agDPJtYV5FkEUvYFLaGTQU=; b=u3rTiudV2/VxKIOL475A+F5t7bQHkmY/K2b3z/2hQbnk0xshL/6Dc4XP ZFBr9AbGs3IMfPjkhvGqdjeAmPkBUUsZj41Cc2MOb0D34/i/62PM0+hYU /40J++JRp/c2FttNY3i54EKyay8s435sLMS3eUNKP/On/U+aEyhk4jd+3 E=; X-IronPort-AV: E=Sophos;i="4.93,746,1378857600"; d="scan'208,217";a="37025668" Received: from smtp-in-5102.iad5.amazon.com ([10.218.9.29]) by smtp-border-fw-out-9102.sea19.amazon.com with ESMTP/TLS/DHE-RSA-AES256-SHA; 21 Nov 2013 18:06:51 +0000 Received: from ex10-hub-9003.ant.amazon.com (ex10-hub-9003.ant.amazon.com [10.185.137.132]) by smtp-in-5102.iad5.amazon.com (8.14.7/8.14.7) with ESMTP id rALI6m9v031619 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=OK) for ; Thu, 21 Nov 2013 18:06:50 GMT Received: from EX10-MBX-9002.ant.amazon.com ([fe80::f0a2:552e:430e:3cdb]) by ex10-hub-9003.ant.amazon.com ([::1]) with mapi id 14.02.0342.003; Thu, 21 Nov 2013 10:06:48 -0800 From: "Benson, Bryan" To: "dev@dpdk.org" Thread-Topic: 82599 Checksum offloading for UDP Thread-Index: Ac7mTd6Aj1QWkN9uRKyupn8q/1FWaA== Date: Thu, 21 Nov 2013 18:06:47 +0000 Message-ID: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [172.17.1.118] MIME-Version: 1.0 Precedence: Bulk Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.15 Subject: [dpdk-dev] 82599 Checksum offloading for UDP X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 21 Nov 2013 18:05:56 -0000 All, We are using RX checksum offloading for L3 and L4 on the 82599 NIC. One odd= behavior we have noticed is that UDP packets with a zero UDP checksum are = being marked as invalid. The UDP checksum field for IPv4 + UDP is optional= . Is there a way to toggle the behavior? I have been reviewing the DataSheet= and have not seen a way so far. Thank you, Bryan Benson Amazon Web Services