net/mlx5e: IPoIB, Don't allow CQE compression to be turned on by default

[ Upstream commit b12d581e83e3ae1080c32ab83f123005bd89a840 ]

mlx5e_build_nic_params will turn CQE compression on if the hardware
capability is enabled and the slow_pci_heuristic condition is detected.
As IPoIB doesn't support CQE compression, make sure to disable the
feature in the IPoIB profile init.

Please note that the feature is not exposed to the user for IPoIB
interfaces, so it can't be subsequently turned on.

Fixes: b797a684b0dd ("net/mlx5e: Enable CQE compression when PCI is slower than link")
Signed-off-by: Dragos Tatulea <dtatulea@nvidia.com>
Reviewed-by: Gal Pressman <gal@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/ipoib/ipoib.c b/drivers/net/ethernet/mellanox/mlx5/core/ipoib/ipoib.c
index c02b7b08fb4c1da8b53eed6901a41b04f78303b9..2032d5c0ad86a31742a47baca40aa536c7e91cdb 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/ipoib/ipoib.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/ipoib/ipoib.c
@@ -70,6 +70,10 @@ static void mlx5i_build_nic_params(struct mlx5_core_dev *mdev,
        params->packet_merge.type = MLX5E_PACKET_MERGE_NONE;
        params->hard_mtu = MLX5_IB_GRH_BYTES + MLX5_IPOIB_HARD_LEN;
        params->tunneled_offload_en = false;
+
+       /* CQE compression is not supported for IPoIB */
+       params->rx_cqe_compress_def = false;
+       MLX5E_SET_PFLAG(params, MLX5E_PFLAG_RX_CQE_COMPRESS, params->rx_cqe_compress_def);
 }
 
 /* Called directly after IPoIB netdevice was created to initialize SW structs */