[PATCH net V2 0/2] net/mlx5e: Report zero bandwidth for non-ETS traffic

[Tariq Toukan]

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, introduced by commit 820c2c5e773d ("net/mlx5e:
Read ETS settings directly from firmware"), and the set path does
not reject the unsupported CB Shaper TSA, introduced 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, and rejects CB Shaper TSA
configurations that the driver does not support.

Regards,
Tariq

V2:
- Dropped patch 2 "net/mlx5e: Validate bandwidth for non-ETS
  traffic classes" (Jakub). We'll submit a more generic version of it.

V1:
https://lore.kernel.org/all/20260622112925.624795-1-tariqt@xxxxxxxxxx/

Alexei Lazar (2):
  net/mlx5e: Report zero bandwidth for non-ETS traffic classes
  net/mlx5e: Reject unsupported CB Shaper TSA in ETS validation

 .../net/ethernet/mellanox/mlx5/core/en_dcbnl.c    | 15 +++++++++++++++
 1 file changed, 15 insertions(+)


base-commit: 3f1f755366687d051174739fb99f7d560202f60b
-- 
2.44.0