diff options
| author | Saeed Mahameed <saeedm@nvidia.com> | 2025-09-06 18:29:44 -0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2025-09-09 19:14:23 -0700 |
| commit | bf2da4799fdb6eb58d9c9541b7dc1096c260499d (patch) | |
| tree | 9b7b48b1ff3d4a733468dae874bc2e6d75278cfd /Documentation/networking/devlink | |
| parent | ce0b015e2619ae64b7d33fb24a6b6cadcd70c317 (diff) | |
net/mlx5: Implement cqe_compress_type via devlink params
Selects which algorithm should be used by the NIC in order to decide rate of
CQE compression dependeng on PCIe bus conditions.
Supported values:
1) balanced, merges fewer CQEs, resulting in a moderate compression ratio
but maintaining a balance between bandwidth savings and performance
2) aggressive, merges more CQEs into a single entry, achieving a higher
compression rate and maximizing performance, particularly under high
traffic loads.
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20250907012953.301746-3-saeed@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'Documentation/networking/devlink')
| -rw-r--r-- | Documentation/networking/devlink/mlx5.rst | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/Documentation/networking/devlink/mlx5.rst b/Documentation/networking/devlink/mlx5.rst index 7febe0aecd53..2edc842b620d 100644 --- a/Documentation/networking/devlink/mlx5.rst +++ b/Documentation/networking/devlink/mlx5.rst @@ -117,6 +117,16 @@ parameters. - driverinit - Control the size (in packets) of the hairpin queues. + * - ``cqe_compress_type`` + - string + - permanent + - Configure which mechanism/algorithm should be used by the NIC that will + affect the rate (aggressiveness) of compressed CQEs depending on PCIe bus + conditions and other internal NIC factors. This mode affects all queues + that enable compression. + * ``balanced`` : Merges fewer CQEs, resulting in a moderate compression ratio but maintaining a balance between bandwidth savings and performance + * ``aggressive`` : Merges more CQEs into a single entry, achieving a higher compression rate and maximizing performance, particularly under high traffic loads + The ``mlx5`` driver supports reloading via ``DEVLINK_CMD_RELOAD`` Info versions |