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Commit 291f445e authored by Tariq Toukan's avatar Tariq Toukan Committed by Saeed Mahameed
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net/mlx5e: Disable Striding RQ when PCI is slower than link 



We turn the feature off for servers with PCI BW bounded
by a threshold (16G) and lower than MAX LINK BW.
This improves the effectiveness of CQE compression feature,
that is defaulted to ON for the same case.

Signed-off-by: default avatarTariq Toukan <tariqt@mellanox.com>
Signed-off-by: default avatarSaeed Mahameed <saeedm@mellanox.com>
parent 0608d4db

drivers/net/ethernet/mellanox/mlx5/core/en_main.c

+6 −3
Original line number Diff line number Diff line
@@ -113,10 +113,13 @@ void mlx5e_init_rq_type_params(struct mlx5_core_dev *mdev, 
		       MLX5E_GET_PFLAG(params, MLX5E_PFLAG_RX_CQE_COMPRESS));

}



static bool slow_pci_heuristic(struct mlx5_core_dev *mdev);



static void mlx5e_set_rq_params(struct mlx5_core_dev *mdev,

				struct mlx5e_params *params)

{

	u8 rq_type = mlx5e_check_fragmented_striding_rq_cap(mdev) &&

		!slow_pci_heuristic(mdev) &&

		!params->xdp_prog && !MLX5_IPSEC_DEV(mdev) ?

		MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ :

		MLX5_WQ_TYPE_LINKED_LIST;