https://lore.kernel.org/netdev/[email protected]/
It seems jammy kernel needs cf530217408e ("devlink: Notify users when objects
are accessible") from v5.16-rc1
(see link) the old devlink_register (before cf530217408e) implementation do
not publish the params so we cannot erase the calls to devlink_params_publish.
i'll update once finished testing with cf530217408e ported.
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https://bugs.launchpad.net/bugs/1967754
Title:
ubuntu 22.04 jammy, mlx5, can't change flow steering mode
Status in linux package in Ubuntu:
Incomplete
Bug description:
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.
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