> >OK, Thanks for your info. > >BTW, you mentioned the gap, is it the tunneling tso can't work correctly for >multi-segments >mbuf, and after some packets, guest is unable to xmit packets(dpdk driver >failed to work any >more)?
At the time, the gap was that the tunnel header was not replicated across all of the NIC-fragmented frames; that has been resolved now in DPDK. However, while testing with TSO with single-tagged VLAN frames, I see something similar to what you describe. I currently have a workaround, but want to do a bit more digging before I report out on it. Thanks, Mark > >Thanks, >Michael > >2016年10月14日，下午5:15，Kavanagh, Mark B <mark.b.kavan...@intel.com> ： > >>> >>> >>> Hi, Mark >>> >>> >>> OK, once it's ready， pls let me know and I'm glade to help to test it. >>> >>> >>> BTW， you mentioned the gap, is that the TSO and CSUM of tunnel offload? >>> I'm familiar with it, and I hope I could do something on it if possible. >> >> Yes, that's what it was. >> >> Commits have recently been introduced to DPDK that introduce additional >> flags for tunnel >offloading, but I haven't had a chance to test them with in my TSO+VxLAN >codebase. >> >> Thanks, >> Mark >> >>> >>> >>> 2016/10/11 22:34, Kavanagh, Mark B : >>>>> Hi, all >>>>> >>>>> >>>>> This patch is very important for users want to improve the performance >>>>> of the large packets. >>>>> >>>>> >>>>> But you know, in data center, lots of networks using vxlan, so if it >>>>> supports vxlan, then it will be very useful. >>>>> >>>>> >>>>> Would you guys has a plan to support it? I would like to help test it, >>>>> or work together on it? >>>> Hi Michael, >>>> >>>> Some work has already been done to enable TSO over VxLAN, but it was >>>> blocked until >>> recently, on account of gaps in the DPKD i40e PMD's support for tunnel >>> offload. >>>> >>>> We believe that those gaps have now been addressed; our current focus is >>>> on ironing out >the >>> issues in TSO support over flat and VLAN networks - once that's done, we >>> plan to resume >work >>> on VxLAN support (and GRE, IPinIP). >>>> >>>> Hope this helps, >>>> Mark >>>> >>>>> >>>>> -- >>>>> Thanks, >>>>> Michael >>> >>> -- >>> Thanks, >>> Michael >> > _______________________________________________ dev mailing list dev@openvswitch.org http://openvswitch.org/mailman/listinfo/dev
