intel / intel/pf-bb-config

QoS configuration not possible?

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Description

Hi,

I have been working with `pf_bb_config` to configure the PF of the vRAN Boost v1.0. According to the architecture specification of Sapphire Rapids EE, it is possible to configure up to three levels of QoS per VF in the vRAN Boost. I believe these are the following values parsed as:

- `gbr_threshold1`
- `gbr_threshold2`
- `round_robin_weight`

The `vrb1_cfg_parser.c` parses these values within the sections ARBUL4G, ARBDL4G, ARBUL5G, ARBDL5G, and ARBFFT, saving the same values for all VFs. However, the configuration is never applied as one can see from the `vbr1_cfg_app.c` file. It seems that the reason the QoS configurations are not being applied is that the script only configures the PF and not the VFs.

Is there any public document where I can find more information on how these QoS configurations work? How can one apply them?

I have also checked under /sys/bus/pci/devices/0000:f7:00.0/virtfnXXX/ and it seems there is no file to apply these settings.

Thanks.

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