Support VF groups rate limit

[Bodong Wang]

* Explain the feature

Managing TX rate of VFs becomes non-trivial task when a big number of VFs are used. This issue can be handled with some grouping mechanism.

Currently driver provide two ways to limit TX rate of the VF: TC police action and NDO API callback. Implementation of grouping within this two infrastructures problematic, due to the following:

NDO API rate limiting is legacy feature, even though it's available in switchdev mode, and extending it with new abstraction is not good anyway;

TC police action is flow based and requires net device with Qdisc on it and implementing this will bring unwanted complications.

According to aforesaid devlink is the most appropriate place.

* How to test

Set tx_max value on the devlink port with a command. For ex.:

$ devlink port function rate set pci/0000:82:00.0/1 tx_max 10gbit
or if grouping is required, create rate group with configured tx_max value in a single command and assign port to this group:

$ devlink port function rate add pci/0000:82:00.0/1st_group tx_max 8gbit
$ devlink port function rate set pci/0000:82:00.0/1 tx_max 10gbit parent 1st_group

Configuration is done. Run traffic and do measurement.

* What it could break.

As this pull request backported 130 patches from devlink/netlink, it may break some functionalities from net core layer. Also, the network drivers which are not used by BF are disabled to avoid the fix of conflicts.

[Ubuntu Kernel Bot (ubuntu-kernel-bot)]

This bug is awaiting verification that the linux-bluefield/5.4.0-1033.36 kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed-focal' to 'verification-done-focal'. If the problem still exists, change the tag 'verification-needed-focal' to 'verification-failed-focal'.

If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you!

[Launchpad Janitor (janitor)]

This bug was fixed in the package linux-bluefield - 5.4.0-1035.38

---------------
linux-bluefield (5.4.0-1035.38) focal; urgency=medium

  * focal/linux-bluefield: 5.4.0-1035.38 -proposed tracker (LP: #1969372)

  * mlxbf-gige: sync up with upstreamed version (LP: #1969233)
    - SAUCE: Revert "UBUNTU: SAUCE: Fix OOB handling RX packets in heavy traffic"
    - SAUCE: Revert "UBUNTU: SAUCE: mlxbf_gige: update driver version to 1.25"
    - SAUCE: Revert "UBUNTU: SAUCE: mlxbf_gige: clear valid_polarity upon open"
    - SAUCE: Revert "UBUNTU: SAUCE: mlxbf_gige: add interrupt counts to "ethtool
      -S""
    - SAUCE: Revert "UBUNTU: SAUCE: mlxbf-gige: add ethtool
      mlxbf_gige_set_ringparam"
    - SAUCE: Revert "UBUNTU: SAUCE: mlxbf-gige: add driver version"
    - mlxbf_gige: clear valid_polarity upon open
    - net: mellanox: mlxbf_gige: Replace non-standard interrupt handling
    - SAUCE: mlxbf-gige: add driver version
    - SAUCE: mlxbf_gige: add interrupt counts to "ethtool -S"
    - SAUCE: mlxbf-gige: add ethtool mlxbf_gige_set_ringparam
    - SAUCE: Fix OOB handling RX packets in heavy traffic

  * linux-bluefield: Fix build failure in mlxbf_gige (LP: #1969374)
    - gpiolib: acpi: Allow to find GpioInt() resource by name and index

linux-bluefield (5.4.0-1034.37) focal; urgency=medium

  * focal/linux-bluefield: 5.4.0-1034.37 -proposed tracker (LP: #1968766)

  * Devlink wasn't enabled from common config (LP: #1968751)
    - [Config] Bluefield: Enable CONFIG_NET_DEVLINK
    - [Config] Bluefield: Enable dummy config options NET_VENDOR_BROADCOM and
      PAGE_POOL

linux-bluefield (5.4.0-1033.36) focal; urgency=medium

  * focal/linux-bluefield: 5.4.0-1033.36 -proposed tracker (LP: #1967369)

  * Fix flow table lookup failure with no originating ifindex (LP: #1967892)
    - net/sched: act_ct: Fix flow table lookup failure with no originating ifindex

  * Fix OOB handling RX packets in heavy traffic (LP: #1964984)
    - SAUCE: Fix OOB handling RX packets in heavy traffic

  * Pass originating device to drivers offloading ct connection so devices will
    filter the tuples and offload them more efficiently (LP: #1960575)
    - net: openvswitch: Be liberal in tcp conntrack.
    - net/sched: act_ct: Fill offloading tuple iifidx
    - net: openvswitch: Fill act ct extension

  * Fix flow table lookup after ct clear or switching zones (LP: #1963948)
    - net/sched: act_ct: Fix flow table lookup after ct clear or switching zones

  * CT: Offload only ASSURED connections (LP: #1961819)
    - net/sched: act_ct: Offload only ASSURED connections

  * Sync up gpio interrupt handling with upstreamed version (LP: #1965017)
    - Revert "UBUNTU: SAUCE: gpio-mlxbf2.c: Fix setting the gpio direction to
      output"
    - Revert "UBUNTU: SAUCE: gpio-mlxbf2.c: remove phy interrupt"
    - Revert "UBUNTU: SAUCE: gpio-mlxbf2: Cleanup and use generic gpio_irq_chip
      struct"
    - Revert "UBUNTU: SAUCE: gpio-mlxbf2.c: Support soft reset gpio interrupt"
    - Revert "UBUNTU: SAUCE: gpio-mlxbf2.c: fix spinlock bug and using
      uninitialized work"
    - Revert "UBUNTU: SAUCE: gpio: Add irq support for gpio-mlxbf2"
    - gpio: mlxbf2: remove unused inclu...