From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp-fw-2101.amazon.com (smtp-fw-2101.amazon.com [72.21.196.25]) by dpdk.org (Postfix) with ESMTP id 98B7A593E for ; Thu, 7 Nov 2013 18:37:23 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazon201209; t=1383845898; x=1415381898; h=from:to:subject:date:message-id:references:in-reply-to: content-transfer-encoding:mime-version; bh=RSzKUOLEGIBD+dhbcck7tZrrTw2kIb2KRt5KRHr7zYM=; b=cNu8Q4tZkJRFbw5LFKLIQWj26mFVOYasiQAplal3WnPTrfdRxyQfp9rV r9t+sKTnvKqOfbgujhTGSUV9l8XEvuVm2qkqCMY3EkIPzV1KNZgloHlNS 7waPuVPEM3LbW/fug7BD/TfzxA9oxeyFmwT4B6MBKO7fIIwrfW4t59ya4 M=; X-IronPort-AV: E=Sophos;i="4.93,653,1378857600"; d="scan'208";a="204941" Received: from smtp-in-31001.sea31.amazon.com ([10.184.168.27]) by smtp-border-fw-out-2101.iad2.amazon.com with ESMTP/TLS/DHE-RSA-AES256-SHA; 07 Nov 2013 17:06:15 +0000 Received: from ex10-hub-9001.ant.amazon.com (ex10-hub-9001.ant.amazon.com [10.185.137.58]) by smtp-in-31001.sea31.amazon.com (8.14.7/8.14.7) with ESMTP id rA7H6EiA026182 (version=TLSv1/SSLv3 cipher=AES128-SHA bits=128 verify=OK); Thu, 7 Nov 2013 17:06:14 GMT Received: from EX10-MBX-36002.ant.amazon.com ([fe80::cd97:16ef:48e8:b9f5]) by ex10-hub-9001.ant.amazon.com ([::1]) with mapi id 14.02.0342.003; Thu, 7 Nov 2013 09:06:07 -0800 From: "Benson, Bryan" To: Daniel Kaminsky , "dev@dpdk.org" Thread-Topic: [dpdk-dev] TX IP checksum offloading Thread-Index: AQHO27hMpItNnNT1tkaab5un9GuFY5oZ/yMK Date: Thu, 7 Nov 2013 17:06:06 +0000 Message-ID: References: In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [172.17.1.118] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Subject: Re: [dpdk-dev] TX IP checksum offloading 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: Thu, 07 Nov 2013 17:37:23 -0000 Hi Daniel,=0A= I posted some findings yesterday that seem relevant. Try using the ol flag= s when you use an RX free threshold below 32.=0A= =0A= I am looking into what can be done to fix it for values of 32 and above.=0A= http://dpdk.org/ml/archives/dev/2013-November/000724.html=0A= =0A= Thanks,=0A= Bryan Benson=0A= ________________________________________=0A= From: dev [dev-bounces@dpdk.org] on behalf of Daniel Kaminsky [daniel.kamin= sky@infinitelocality.com]=0A= Sent: Thursday, November 07, 2013 4:52 AM=0A= To: dev@dpdk.org=0A= Subject: [dpdk-dev] TX IP checksum offloading=0A= =0A= Hi,=0A= =0A= Did anyone had an experience using the PKT_TX_IP_CKSUM flag?=0A= I have an application that generates IP traffic but whenever I try to set= =0A= this flag on (*m->ol_flags =3D PKT_TX_IP_CKSUM)* the rte_mbuf nothing is se= nt=0A= out.=0A= Retrieving that statistics from the ethernet device show zero for opackets= =0A= and oerrors.=0A= =0A= I'm using ixgbe driver and DPDK 1.5.0-8 (from Intel) distribution.=0A= =0A= Thanks,=0A= Daniel=0A=