linux-stable.git/Documentation/networking/device_drivers, branch v6.4

Documentation: net/mlx5: Wrap notes in admonition blocks

2023-05-25T03:44:20+00:00

Wrap note paragraphs in note:: directive as it better fit for the
purpose of noting devlink commands.

Fixes: f2d51e579359b7 ("net/mlx5: Separate mlx5 driver documentation into multiple pages")
Fixes: cf14af140a5ad0 ("net/mlx5e: Add vnic devlink health reporter to representors")
Reviewed-by: Leon Romanovsky 
Signed-off-by: Bagas Sanjaya 
Signed-off-by: Saeed Mahameed

Documentation: net/mlx5: Add blank line separator before numbered lists

2023-05-25T03:44:20+00:00

The doc forgets to add separator before numbered lists, which causes the
lists to be appended to previous paragraph inline instead.

Add the missing separator.

Fixes: f2d51e579359b7 ("net/mlx5: Separate mlx5 driver documentation into multiple pages")
Reviewed-by: Leon Romanovsky 
Signed-off-by: Bagas Sanjaya 
Reviewed-by: Simon Horman 
Signed-off-by: Saeed Mahameed

Documentation: net/mlx5: Use bullet and definition lists for vnic counters description

2023-05-25T03:44:19+00:00

"vnic reporter" section contains unformatted description for vnic
counters, which is rendered as one long paragraph instead of list.

Use bullet and definition lists to match other lists.

Fixes: b0bc615df488ab ("net/mlx5: Add vnic devlink health reporter to PFs/VFs")
Reviewed-by: Leon Romanovsky 
Signed-off-by: Bagas Sanjaya 
Reviewed-by: Simon Horman 
Reviewed-by: Daniel Machon 
Signed-off-by: Saeed Mahameed

Documentation: net/mlx5: Wrap vnic reporter devlink commands in code blocks

2023-05-25T03:44:19+00:00

Sphinx reports htmldocs warnings:

Documentation/networking/device_drivers/ethernet/mellanox/mlx5/devlink.rst:287: WARNING: Unexpected indentation.
Documentation/networking/device_drivers/ethernet/mellanox/mlx5/devlink.rst:288: WARNING: Block quote ends without a blank line; unexpected unindent.
Documentation/networking/device_drivers/ethernet/mellanox/mlx5/devlink.rst:290: WARNING: Unexpected indentation.

Fix above warnings by wrapping diagnostic devlink commands in "vnic
reporter" section in code blocks to be consistent with other devlink
command snippets.

Fixes: b0bc615df488ab ("net/mlx5: Add vnic devlink health reporter to PFs/VFs")
Fixes: cf14af140a5ad0 ("net/mlx5e: Add vnic devlink health reporter to representors")
Reviewed-by: Leon Romanovsky 
Signed-off-by: Bagas Sanjaya 
Reviewed-by: Simon Horman 
Signed-off-by: Saeed Mahameed

Merge tag 'mlx5-updates-2023-04-20' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux

2023-04-22T03:47:05+00:00

Saeed Mahameed says:

====================
mlx5-updates-2023-04-20

1) Dragos Improves RX page pool, and provides some fixes to his previous
   series:
 1.1) Fix releasing page_pool for striding RQ and legacy RQ nonlinear case
 1.2) Hook NAPIs to page pools to gain more performance.

2) From Roi, Some cleanups to TC and eswitch modules.

3) Maher migrates vnic diagnostic counters reporting from debugfs to a
    dedicated devlink health reporter

Maher Says:
===========
 net/mlx5: Expose vnic diagnostic counters using devlink

Currently, vnic diagnostic counters are exposed through the following
debugfs:

$ ls /sys/kernel/debug/mlx5/0000:08:00.0/esw/vf_0/vnic_diag/
cq_overrun
quota_exceeded_command
total_q_under_processor_handle
invalid_command
send_queue_priority_update_flow
nic_receive_steering_discard

The current design does not allow the hypervisor to view the diagnostic
counters of its VFs, in case the VFs get bound to a VM. In other words,
the counters are not exposed for representor interfaces.
Furthermore, the debugfs design is inconvenient future-wise, in case more
counters need to be reported by the driver in the future.

As these counters pertain to vNIC health, it is more appropriate to
utilize the devlink health reporter to expose them.

Thus, this patchest includes the following changes:

* Drop the current vnic diagnostic counters debugfs interface.
* Add a vnic devlink health reporter for PFs/VFs core devices, which
  when diagnosed will dump vnic diagnostic counter values that are
  queried from FW.
* Add a vnic devlink health reporter for the representor interface, which
  serves the same purpose listed in the previous point, in addition to
  allowing the hypervisor to view its VFs diagnostic counters, even when
  the VFs are bounded to external VMs.

Example of devlink health reporter usage is:
$devlink health diagnose pci/0000:08:00.0 reporter vnic
 vNIC env counters:
    total_error_queues: 0 send_queue_priority_update_flow: 0
    comp_eq_overrun: 0 async_eq_overrun: 0 cq_overrun: 0
    invalid_command: 0 quota_exceeded_command: 0
    nic_receive_steering_discard: 0

===========

4) SW steering fixes and improvements

Yevgeny Kliteynik Says:
=======================
These short patch series are just small fixes / improvements for
SW steering:

 - Patch 1: Fix dumping of legacy modify_hdr in debug dump to
   align to what is expected by parser
 - Patch 2: Have separate threshold for ICM sync per ICM type
 - Patch 3: Add more info to the steering debug dump - Linux
   version and device name
 - Patch 4: Keep track of number of buddies that are currently
   in use per domain per buddy type

=======================

* tag 'mlx5-updates-2023-04-20' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux:
  net/mlx5: Update op_mode to op_mod for port selection
  net/mlx5: E-Switch, Remove unused mlx5_esw_offloads_vport_metadata_set()
  net/mlx5: E-Switch, Remove redundant dev arg from mlx5_esw_vport_alloc()
  net/mlx5: Include linux/pci.h for pci_msix_can_alloc_dyn()
  net/mlx5e: RX, Hook NAPIs to page pools
  net/mlx5e: RX, Fix XDP_TX page release for legacy rq nonlinear case
  net/mlx5e: RX, Fix releasing page_pool pages twice for striding RQ
  net/mlx5e: Add vnic devlink health reporter to representors
  net/mlx5: Add vnic devlink health reporter to PFs/VFs
  Revert "net/mlx5: Expose vnic diagnostic counters for eswitch managed vports"
  Revert "net/mlx5: Expose steering dropped packets counter"
  net/mlx5: DR, Add memory statistics for domain object
  net/mlx5: DR, Add more info in domain dbg dump
  net/mlx5: DR, Calculate sync threshold of each pool according to its type
  net/mlx5: DR, Fix dumping of legacy modify_hdr in debug dump
====================

Link: https://lore.kernel.org/r/20230421013850.349646-1-saeed@kernel.org
Signed-off-by: Jakub Kicinski

pds_core: Kconfig and pds_core.rst

2023-04-21T07:29:14+00:00

Remaining documentation and Kconfig hook for building the driver.

Signed-off-by: Shannon Nelson 
Acked-by: Jakub Kicinski 
Signed-off-by: David S. Miller

pds_core: devlink params for enabling VIF support

2023-04-21T07:29:13+00:00

Add the devlink parameter switches so the user can enable
the features supported by the VFs.  The only feature supported
at the moment is vDPA.

Example:
    devlink dev param set pci/0000:2b:00.0 \
	    name enable_vnet cmode runtime value true

Signed-off-by: Shannon Nelson 
Acked-by: Jakub Kicinski 
Signed-off-by: David S. Miller

pds_core: add FW update feature to devlink

2023-04-21T07:29:13+00:00

Add in the support for doing firmware updates.  Of the two
main banks available, a and b, this updates the one not in
use and then selects it for the next boot.

Example:
    devlink dev flash pci/0000:b2:00.0 \
	    file pensando/dsc_fw_1.63.0-22.tar

Signed-off-by: Shannon Nelson 
Acked-by: Jakub Kicinski 
Signed-off-by: David S. Miller

pds_core: set up device and adminq

2023-04-21T07:29:12+00:00

Set up the basic adminq and notifyq queue structures.  These are
used mostly by the client drivers for feature configuration.
These are essentially the same adminq and notifyq as in the
ionic driver.

Part of this includes querying for device identity and FW
information, so we can make that available to devlink dev info.

  $ devlink dev info pci/0000:b5:00.0
  pci/0000:b5:00.0:
    driver pds_core
    serial_number FLM18420073
    versions:
        fixed:
          asic.id 0x0
          asic.rev 0x0
        running:
          fw 1.51.0-73
        stored:
          fw.goldfw 1.15.9-C-22
          fw.mainfwa 1.60.0-73
          fw.mainfwb 1.60.0-57

Signed-off-by: Shannon Nelson 
Acked-by: Jakub Kicinski 
Signed-off-by: David S. Miller

pds_core: add devlink health facilities

2023-04-21T07:29:12+00:00

Add devlink health reporting on top of our fw watchdog.

Example:
  # devlink health show pci/0000:2b:00.0 reporter fw
  pci/0000:2b:00.0:
    reporter fw
      state healthy error 0 recover 0
  # devlink health diagnose pci/0000:2b:00.0 reporter fw
   Status: healthy State: 1 Generation: 0 Recoveries: 0

Signed-off-by: Shannon Nelson 
Acked-by: Jakub Kicinski 
Signed-off-by: David S. Miller