Public bug reported:
on kernel 5.15.0-23-generic devlink cannot show/change flow steering mode
[test case]
# devlink dev param show pci/0000:24:00.0 name flow_steering_mode
pci/0000:24:00.0:
name flow_steering_mode type driver-specific
values:
(flow steering mode description is missing beneath values)
# devlink dev param set pci/0000:24:00.0 name flow_steering_mode value smfs
cmode runtime
Segmentation fault (core dumped)
and also with upstream iproute
# ./iproute2/devlink/devlink dev param set pci/0000:24:00.0 name
flow_steering_mode value smfs cmode runtime
Configuration mode not supported
this issue is a degradation introduced by commit from jammy tree
76385c47db37 ("net/mlx5: Accept devlink user input after driver initialization
complete")
issue do not repro on v5.15.0 or when the above commit is reverted.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Incomplete
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https://bugs.launchpad.net/bugs/1967754
Title:
ubuntu 22.04 jammy, mlx5, can't change flow steering mode
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