From aa36c94853b2bcc4953e065c462deb1ade7f55be Mon Sep 17 00:00:00 2001 From: Yevgeny Kliteynik Date: Sun, 28 Nov 2021 21:48:47 +0200 Subject: [PATCH] net/mlx5: Set SMFS as a default steering mode if device supports it 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 --- drivers/net/ethernet/mellanox/mlx5/core/fs_core.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c index cc76ceebd208..b628917e38e4 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/fs_core.c @@ -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);