About VF multiple queue

TWang25 · ‎09-06-2017

I have a Dual-port Intel 82599 NIC.

My testbed is Ubuntu 14.04, ixgbe driver 5.2.3, ixgbevf 4.2.1.

I initialize one VF by executing

echo 1 >> /sys/bus/pci/devices/0000\:06\:00.0/sriov_numvfs

However, the number of queue pair attached to this VF is only 1, as shown in the dmesg

[ 727.882194] ixgbevf 0000:06:10.0: Multiqueue Disabled: Rx Queue count = 1, Tx Queue count = 1

This is may be not consistent with the Intel 82599 data sheet, which shows a pool of queue pairs (e.g., 8, 4 or 2) is assigned to the VF interface.

My question is how to configure VF multiple queue correctly?

idata · ‎09-06-2017

HI Wtao000,

Thank you for posting at Wired Communities. I will check on this.

Regards

sharon

idata · ‎09-07-2017

Hi Wtao000,

Please try using below command to add the queue, as stated on page 11 at

https://www.intel.com/content/dam/www/public/us/en/documents/technology-briefs/xl710-sr-iov-config-guide-gbe-linux-brief.pdf

example:

# modprobe i40e max_vfs=4,4

Thanks,

sharon

TWang25 · ‎09-07-2017

Sorry, this may still not work.

My NIC controller is 82599. I have run "modprobe ixgbe max_vfs=4,4".

It still can not work.

idata · ‎09-08-2017

Hi Wtao000,

Thank you for the update. Let me further check.

Regards,

sharon

TWang25 · ‎09-11-2017

Hi, Sharon

so, any further updates now?

Best,

Tao

idata · ‎09-20-2017

Hi Wtao000,

The latest 82599 physical function and virtual function drivers can support multi queue feature. Can you help clarify if the VF is being assigned to a VM and how many vCPU are assigned to the VM?

Thanks,

Sharon

idata · ‎09-27-2017

Hi Wtao000,

Please feel free to provide the information for us to better assist you.

Thanks,

Sharon