From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from smtp-outbound-2.vmware.com (smtp-outbound-2.vmware.com [208.91.2.13]) by dpdk.org (Postfix) with ESMTP id 389EA7EC4 for ; Fri, 7 Nov 2014 02:04:38 +0100 (CET) Received: from sc9-mailhost3.vmware.com (sc9-mailhost3.vmware.com [10.113.161.73]) by smtp-outbound-2.vmware.com (Postfix) with ESMTP id 678EF28549; Thu, 6 Nov 2014 17:13:57 -0800 (PST) Received: from EX13-CAS-003.vmware.com (EX13-CAS-003.vmware.com [10.113.191.53]) by sc9-mailhost3.vmware.com (Postfix) with ESMTP id 4FCAD40D5A; Thu, 6 Nov 2014 16:44:33 -0800 (PST) Received: from EX13-MBX-015.vmware.com (10.113.191.35) by EX13-MBX-005.vmware.com (10.113.191.25) with Microsoft SMTP Server (TLS) id 15.0.775.38; Thu, 6 Nov 2014 16:43:58 -0800 Received: from EX13-MBX-026.vmware.com (10.113.191.46) by EX13-MBX-015.vmware.com (10.113.191.35) with Microsoft SMTP Server (TLS) id 15.0.775.38; Thu, 6 Nov 2014 16:43:57 -0800 Received: from EX13-MBX-026.vmware.com ([fe80::858b:7f42:fd7c:703d]) by EX13-MBX-026.vmware.com ([fe80::858b:7f42:fd7c:703d%17]) with mapi id 15.00.0775.031; Thu, 6 Nov 2014 16:43:45 -0800 From: Yong Wang To: Olivier MATZ , "Liu, Jijiang" Thread-Topic: [dpdk-dev] [PATCH v8 10/10] app/testpmd:test VxLAN Tx checksum offload Thread-Index: AQHP+AgSA965N/E3iEGfdwlmSAVNpJxSEkkAgABKHQCAAfrZHQ== Date: Fri, 7 Nov 2014 00:43:44 +0000 Message-ID: <0c654d2c0d304b45a40af6ca38b70adf@EX13-MBX-026.vmware.com> References: <1414376006-31402-1-git-send-email-jijiang.liu@intel.com> <1414376006-31402-11-git-send-email-jijiang.liu@intel.com> <54588BF7.309@6wind.com> <1ED644BD7E0A5F4091CF203DAFB8E4CC01D8510E@SHSMSX101.ccr.corp.intel.com>, <5459FBB2.1040408@6wind.com> In-Reply-To: <5459FBB2.1040408@6wind.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.113.160.246] Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Cc: "dev@dpdk.org" Subject: Re: [dpdk-dev] [PATCH v8 10/10] app/testpmd:test VxLAN Tx checksum offload 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, 07 Nov 2014 01:04:38 -0000 >> As to HW TX checksum offload, do you have special requirement for implem= enting TSO?=0A= =0A= > Yes. TSO implies TX TCP and IP checksum offload.=0A= =0A= Is this a general requirement or something specific to ixgbe/i40e? FWIW, vm= xnet3 device does not support tx IP checksum offload but doe support TSO. = In that case, we cannot leave IP checksum field as 0 (the correct checksum = needs to be filled in the header) before passing it the the NIC when TSO is= enabled.=0A= =0A= Yong=