Commit 291f445e authored by Tariq Toukan's avatar Tariq Toukan Committed by Saeed Mahameed

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
......@@ -113,13 +113,16 @@ 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) &&
!params->xdp_prog && !MLX5_IPSEC_DEV(mdev) ?
MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ :
MLX5_WQ_TYPE_LINKED_LIST;
!slow_pci_heuristic(mdev) &&
!params->xdp_prog && !MLX5_IPSEC_DEV(mdev) ?
MLX5_WQ_TYPE_LINKED_LIST_STRIDING_RQ :
MLX5_WQ_TYPE_LINKED_LIST;
mlx5e_init_rq_type_params(mdev, params, rq_type);
}
......
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