[dpdk-dev] How to debug packet sends to virtual functions

[Burakov, Anatoly]

Hi Mats

> Hi Anatoly,
> 
> I finally got things working. I apparently missed an "ifconfig <dev> up" in the
> guest, before starting dpdk. I'm still confused why this would be needed. Is
> dpdk unable to do a full initialization of the virtual function from the guest?
> 
You wouldn't be able to call ifconfig on your VF device if you have bound your guest VF device to igb_uio driver. Have you bound your VF device to igb_uio? Or you have enabled automatic port unbinding (which is disabled by default in recent releases)?

> While I got one instance of DPDK running, I got a problem when starting two
> instances of DPDK running against different virtual functions. These virtual
> functions stems from the same physical interfaces.
> 
> Starting them one or the other works fine. I have to adapt my static arp
> entries since they have different MAC addresses, but this is only expected.
> When starting them both however, I receive no packets. If one is running
> and currently processing packets, it will stop doing so the instance the second
> instance starts.
> 
Are you referring to two different VM's each having a separate VF device, or are you trying to run two primary processes on one VM with different VF devices?

Best regards,
Anatoly Burakov
DPDK SW Engineer

--------------------------------------------------------------
Intel Shannon Limited
Registered in Ireland
Registered Office: Collinstown Industrial Park, Leixlip, County Kildare
Registered Number: 308263
Business address: Dromore House, East Park, Shannon, Co. Clare