net/mlx5: Add IFC bits for extended ETS rate limit bandwidth value

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Add hardware interface definitions to support extended bandwidth rate
limiting in the QoS Enhanced Transmission Selection (ETS) configuration.

The new fields include:
- max_bw_value: extended from 8-bit to 16-bit in ets_tcn_config_reg,
  simplifying the implementation by using a single field instead of
  separate MSB/LSB fields.
- qetcr_qshr_max_bw_val_msb: capability bit in qcam_qos_feature_cap_mask
  indicating device support for the extended 16-bit max_bw_value field.

These interface additions are prerequisites for increasing the per-TC
rate limit beyond 255 Gbps to support higher-bandwidth NICs.

Signed-off-by: Alexei Lazar <alazar@nvidia.com>
Reviewed-by: Dragos Tatulea <dtatulea@nvidia.com>
Reviewed-by: Gal Pressman <gal@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/1768200608-1543180-1-git-send-email-tariqt@nvidia.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>

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Alexei Lazar 2026-01-12 08:50:08 +02:00 • committed by Leon Romanovsky

parent f0b2fde980

commit 49e41f3ea3

1 changed files with 4 additions and 3 deletions

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include/linux/mlx5/mlx5_ifc.h

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