[PATCH net 0/3] net/mlx5e: Report zero bandwidth for non-ETS traffic

[Tariq Toukan <tariqt@nvidia.com>]

Hi,

The IEEE 802.1Qaz standard restricts bandwidth allocation percentages
to Enhanced Transmission Selection (ETS) traffic classes; STRICT,
VENDOR, and CB Shaper TSA types carry no bandwidth semantics.  Two
problems exist in the mlx5e DCBNL ETS implementation: the get path
reports 100% bandwidth for all TCs regardless of TSA type due to a
hardware limitation, and the set path neither rejects non-zero
bandwidth values for non-ETS TCs nor rejects the unsupported CB
Shaper TSA altogether.  The first issue was introduced by commit
820c2c5e773d ("net/mlx5e: Read ETS settings directly from firmware")
and the latter two by commit 08fb1dacdd76 ("net/mlx5e: Support DCBNL
IEEE ETS").

This series by Alexei Lazar fixes the get path to report zero
bandwidth for non-ETS traffic classes, adds validation to reject
non-zero bandwidth for non-ETS TCs on the set path, and rejects CB
Shaper TSA configurations that the driver does not support.

Regards,
Tariq

Alexei Lazar (3):
  net/mlx5e: Report zero bandwidth for non-ETS traffic classes
  net/mlx5e: Validate bandwidth for non-ETS traffic classes
  net/mlx5e: Reject unsupported CB Shaper TSA in ETS validation

 .../ethernet/mellanox/mlx5/core/en_dcbnl.c    | 24 +++++++++++++++++++
 1 file changed, 24 insertions(+)


base-commit: d07d80b6a129a44538cda1549b7acf95154fb197
-- 
2.44.0