Hi Olivier, Just to confirm , is this rx checksum patch already submitted in the DPDK ML? We would like to use these flags to speed up the tunneling in OVS.
Regards _Sugesh > -----Original Message----- > From: Chandran, Sugesh > Sent: Friday, June 10, 2016 5:16 PM > To: 'Olivier Matz' <olivier.matz at 6wind.com>; Ananyev, Konstantin > <konstantin.ananyev at intel.com>; Stephen Hemminger > <stephen at networkplumber.org> > Cc: Yuanhan Liu <yuanhan.liu at linux.intel.com>; dev at dpdk.org; Richardson, > Bruce <bruce.richardson at intel.com>; Adrien Mazarguil > <adrien.mazarguil at 6wind.com>; Tan, Jianfeng <jianfeng.tan at intel.com> > Subject: RE: [dpdk-dev] about rx checksum flags > > > > Regards > _Sugesh > > > -----Original Message----- > > From: Olivier Matz [mailto:olivier.matz at 6wind.com] > > Sent: Wednesday, June 8, 2016 2:02 PM > > To: Chandran, Sugesh <sugesh.chandran at intel.com>; Ananyev, Konstantin > > <konstantin.ananyev at intel.com>; Stephen Hemminger > > <stephen at networkplumber.org> > > Cc: Yuanhan Liu <yuanhan.liu at linux.intel.com>; dev at dpdk.org; > > Richardson, Bruce <bruce.richardson at intel.com>; Adrien Mazarguil > > <adrien.mazarguil at 6wind.com>; Tan, Jianfeng <jianfeng.tan at intel.com> > > Subject: Re: [dpdk-dev] about rx checksum flags > > > > Hi, > > > > On 06/08/2016 10:22 AM, Chandran, Sugesh wrote: > > >>> I guess the IP checksum also important as L4. In some cases, UDP > > >>> checksum is zero and no need to validate it. But Ip checksum is > > >>> present on all the packets and that must be validated all the time. > > >>> At higher packet rate, the ip checksum offload can offer slight > > >>> performance > > >> improvement. What do you think?? > > >>> > > >> > > >> Agree, in some situations (and this is even more true with packet > > >> types / smartnics), the application could process without accessing > > >> the packet data if we keep the IP cksum flags. > > > [Sugesh] True, If that's the case, Will you considering to implement > > > IP checksum flags as well along with L4? > > > As you said , this will be useful when we offload packet lookup > > > itself into the NICs(May be when using Flow director) ? > > > > Yes, I plan to implement the same rx status flags (good, bad, unknown, > > none) for rx IP checksum too. > [Sugesh] That's great!, Thank you Olivier. > > > > Regards, > > Olivier
