As described in datasheet, for ConnectX-6, there are 8 PFs and up to 1K VFs per port, however, the parameter [NUM_OF_VFS] can only be set to 127 at max and there are two physical ports. So, how can we configure ConnectX-6 with 8 PFs and 1K VFs.

Infrastructure & Networking Software And Drivers Virtualization For Infiniband And Ethernet
1

As described in datasheet, for ConnectX-6, there are 8 PFs and up to 1K VFs per port, however, the parameter [NUM_OF_VFS] can only be set to 127 at max and there are two physical ports. So, how can we configure ConnectX-6 with 8 PFs and 1K VFs.

2

Hi Jianquan,

There is a limitation for the number of VFs in the firmware, which is mentioned in the firmware’s release-notes.

For example - ConnectX-6, FW 20.31.1014 RN:

https://docs.mellanox.com/display/ConnectX6Firmwarev20311014/Known+Issues

As you can see, the max number of VFs is 127 per port.

This number can not be exceeded.

Thanks,

Chen

3

The following content is selected from datasheet of ConnectX-6

Virtualization/Cloud Native

Single Root IOV (SR-IOV) and VirtIO acceleration

Up to 1 K VFs per port

8 PFs

And it is contradicts with the actual situation?

4

Yes, the limitation is in the firmware.

Thanks,

Chen

5

So when will Mellanox release the firmware to support 1K VFs?

6

Currently there’s no such plan.

Thanks,

Chen