SR-IOV pps limiting

[bk-2]

Hi,

I am looking for an SR-IOV VF pps limiting solution. As described in the documents [bandwidth limiting], connectX series NICs provide bandwidth limiting.

Although I have not found the formal pps limiting solution, I figured out sysfs pps directory for connectX-6 dx.: /sys/class/net/{PF_NAME}/device/sriov/{VF_NUMBER}/meters/tx/pps/rate

This sysfs file works as I intended. From this, I have two questions as following:

1. May I use this sysfs file? I mean I wonder if it is the correct usage for pps limiting.
2. ConnectX-5 does not introduce this ‘meters/tx/pps’ sysfs. Is there another possible approach to limit pps?

Thanks.

[hyungkwangc]

VF metering is supported on both CX6DX/LX, but only available in switchdev mode.

VF in legacy mode,
VF rate limit provides min/max_tx_rate bps traffic shaping. It doesn’t support shaping for RX or pps.

• /sys/class/net/<ETH_IF_NAME> /device/sriov//max_tx_rate

• /sys/class/net/<ETH_IF_NAME> /device/sriov//min_tx_rate

[bk-2]

Thank you for your answer!