From mboxrd@z Thu Jan 1 00:00:00 1970 From: Yong Wang Subject: Re: [PATCH v8 10/10] app/testpmd:test VxLAN Tx checksum offload 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> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Cc: "dev-VfR2kkLFssw@public.gmane.org" To: Olivier MATZ , "Liu, Jijiang" Return-path: In-Reply-To: <5459FBB2.1040408-pdR9zngts4EAvxtiuMwx3w@public.gmane.org> Content-Language: en-US List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces-VfR2kkLFssw@public.gmane.org Sender: "dev" >> 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=