[ovs-dev] The Patch netdev-dpdk: add TSO support for vhost-user ports

网易 08005325 at 163.com
Fri Oct 14 10:14:40 UTC 2016


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)?

Thanks,
Michael

2016年10月14日,下午5:15,Kavanagh, Mark B <mark.b.kavanagh at 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
> 





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