On 28 Mar 19:08, Paul Moore wrote:

Hello all,

Starting with the v6.3-rcX kernel releases I noticed that my
InfiniBand devices were no longer present under /sys/class/infiniband,
causing some of my automated testing to fail.  It took me a while to
find the time to bisect the issue, but I eventually identified the
problematic commit:

 commit fe998a3c77b9f989a30a2a01fb00d3729a6d53a4
 Author: Shay Drory [off-list ref]
 Date:   Wed Jun 29 11:38:21 2022 +0300

  net/mlx5: Enable management PF initialization

  Enable initialization of DPU Management PF, which is a new loopback PF
  designed for communication with BMC.
  For now Management PF doesn't support nor require most upper layer
  protocols so avoid them.

  Signed-off-by: Shay Drory [off-list ref]
  Reviewed-by: Eran Ben Elisha [off-list ref]
  Reviewed-by: Moshe Shemesh [off-list ref]
  Signed-off-by: Saeed Mahameed [off-list ref]

I'm not a mlx5 driver expert so I can't really offer much in the way
of a fix, but as a quick test I did remove the
'mlx5_core_is_management_pf(...)' calls in mlx5/core/dev.c and
everything seemed to work okay on my test system (or rather the tests
ran without problem).

If you need any additional information, or would like me to test a
patch, please let me know.

Hi Paul, 

Our team is looking into this, the current theory is that you have an old
FW that doesn't have the correct capabilities set.

Can you please provide the FW version and the ConnectX device you are
testing ? 

$ devlink dev info
$ lspci -s <pci_dev> -vv
since boot:
$ dmesg 

-- 
paul-moore.com