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net/mlx5: Set SMFS as a default steering mode if device supports it

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Set SMFS (SW-managed flow steering) as a default steering mode
instead of DMFS (device-managed flow steering)

In SMFS, the driver writes the STEs (Steering Table Entries) directly
to the device's ICM, which allows for a higher rule insertion rate
than through using FW command interface, as it is done in DMFS.

SMFS/DMFS steering modes can be configured through devlink param
'flow_steering_mode'. The possible values are 'smfs' or 'dmfs'.
The desired 'flow_steering_mode' param value should be set before
enabling switchdev mode.

Example:

  # devlink dev param set pci/0000:05:00.0 name flow_steering_mode smfs
  # devlink dev eswitch set pci/0000:05:00.0 mode switchdev

Signed-off-by: Yevgeny Kliteynik <kliteyn@nvidia.com>
This commit is contained in:
Yevgeny Kliteynik 2021-11-28 21:48:47 +02:00 committed by Saeed Mahameed
parent 4ff725e1d4
commit aa36c94853
1 changed files with 5 additions and 0 deletions
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5
drivers/net/ethernet/mellanox/mlx5/core/fs_core.c
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@ -3083,6 +3083,11 @@ int mlx5_init_fs(struct mlx5_core_dev *dev)
steering->dev = dev;
dev->priv.steering = steering;
if (mlx5_fs_dr_is_supported(dev))
steering->mode = MLX5_FLOW_STEERING_MODE_SMFS;
else
steering->mode = MLX5_FLOW_STEERING_MODE_DMFS;
steering->fgs_cache = kmem_cache_create("mlx5_fs_fgs",
sizeof(struct mlx5_flow_group), 0,
0, NULL);