From: Khalid Manaa <khalidm@nvidia.com>
Date: Mon, 11 Oct 2021 10:36:24 +0300
Subject: net/mlx5e: Prevent HW-GRO and CQE-COMPRESS features operate together
Patch-mainline: v5.16-rc1
Git-commit: ae3452995bd4723549520e3d61d0ccbcacb2745f
References: jsc#SLE-19253

HW-GRO and CQE-COMPRESS are mutually exclusive, this commit adds this
restriction.

Signed-off-by: Khalid Manaa <khalidm@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c |    5 +++++
 drivers/net/ethernet/mellanox/mlx5/core/en_main.c    |    5 +++++
 2 files changed, 10 insertions(+)

--- a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
@@ -1900,6 +1900,11 @@ int mlx5e_modify_rx_cqe_compression_lock
 		return -EINVAL;
 	}
 
+	if (priv->channels.params.packet_merge.type == MLX5E_PACKET_MERGE_SHAMPO) {
+		netdev_warn(priv->netdev, "Can't set CQE compression with HW-GRO, disable it first.\n");
+		return -EINVAL;
+	}
+
 	new_params = priv->channels.params;
 	MLX5E_SET_PFLAG(&new_params, MLX5E_PFLAG_RX_CQE_COMPRESS, new_val);
 	if (rx_filter)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -3560,6 +3560,11 @@ static int set_feature_hw_gro(struct net
 	new_params = priv->channels.params;
 
 	if (enable) {
+		if (MLX5E_GET_PFLAG(&new_params, MLX5E_PFLAG_RX_CQE_COMPRESS)) {
+			netdev_warn(netdev, "Can't set HW-GRO when CQE compress is active\n");
+			err = -EINVAL;
+			goto out;
+		}
 		new_params.packet_merge.type = MLX5E_PACKET_MERGE_SHAMPO;
 		new_params.packet_merge.shampo.match_criteria_type =
 			MLX5_RQC_SHAMPO_MATCH_CRITERIA_TYPE_EXTENDED;