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| author | Gal Pressman <gal@nvidia.com> | 2023-03-13 22:42:30 -0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-03-15 22:12:08 -0700 |
| commit | 1bffcea42926b26e092045ac398850e80d950bb2 (patch) | |
| tree | 947d4a08201a9fa12579615807180b1f4edfce22 /Documentation/networking/devlink | |
| parent | 028522e2844393abc44f7bd7477eb4a455f01579 (diff) | |
| download | linux-1bffcea42926b26e092045ac398850e80d950bb2.tar.gz linux-1bffcea42926b26e092045ac398850e80d950bb2.tar.bz2 linux-1bffcea42926b26e092045ac398850e80d950bb2.zip | |
net/mlx5e: Add devlink hairpin queues parameters
We refer to a TC NIC rule that involves forwarding as "hairpin".
Hairpin queues are mlx5 hardware specific implementation for hardware
forwarding of such packets.
Per the discussion in [1], move the hairpin queues control (number and
size) from debugfs to devlink.
Expose two devlink params:
- hairpin_num_queues: control the number of hairpin queues
- hairpin_queue_size: control the size (in packets) of the hairpin queues
[1] https://lore.kernel.org/all/20230111194608.7f15b9a1@kernel.org/
Signed-off-by: Gal Pressman <gal@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Link: https://lore.kernel.org/r/20230314054234.267365-12-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 | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/Documentation/networking/devlink/mlx5.rst b/Documentation/networking/devlink/mlx5.rst index 3321117cf605..202798d6501e 100644 --- a/Documentation/networking/devlink/mlx5.rst +++ b/Documentation/networking/devlink/mlx5.rst @@ -72,6 +72,18 @@ parameters. Default: disabled + * - ``hairpin_num_queues`` + - u32 + - driverinit + - We refer to a TC NIC rule that involves forwarding as "hairpin". + Hairpin queues are mlx5 hardware specific implementation for hardware + forwarding of such packets. + + Control the number of hairpin queues. + * - ``hairpin_queue_size`` + - u32 + - driverinit + - Control the size (in packets) of the hairpin queues. The ``mlx5`` driver supports reloading via ``DEVLINK_CMD_RELOAD`` |