We decided the best approach was to revert the break patch which is now
done in 5.15.y upstream:
commit f1607e13ed715f3b6433361f8ea5d4aa79f03b94
Author: dann frazier <dann.fraz...@canonical.com>
Date: Thu Apr 7 14:16:42 2022 -0600
Revert "net/mlx5: Accept devlink user input after driver
initialization complete"
Which was released in v5.15.34, and is being tracked for jammy inclusion
in bug 1969107.
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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:
Fix Committed
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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