netdev - [PATCH net-next 11/15] net/mlx5e: Move HW-GRO and CQE compression check to fix features flow

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Date:   Thu,  6 Jan 2022 16:29:52 -0800
From:   Saeed Mahameed <saeed@...nel.org>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     netdev@...r.kernel.org, Gal Pressman <gal@...dia.com>,
        Saeed Mahameed <saeedm@...dia.com>
Subject: [PATCH net-next 11/15] net/mlx5e: Move HW-GRO and CQE compression check to fix features flow

From: Gal Pressman <gal@...dia.com>

Feature dependencies should be resolved in fix features rather than in
set features flow. Move the check that disables HW-GRO in case CQE
compression is enabled from set_feature_hw_gro() to
mlx5e_fix_features().

Signed-off-by: Gal Pressman <gal@...dia.com>
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index 31c911182498..d36489363a26 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -3605,11 +3605,6 @@ static int set_feature_hw_gro(struct net_device *netdev, bool enable)
 	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;
@@ -3871,6 +3866,11 @@ static netdev_features_t mlx5e_fix_features(struct net_device *netdev,
 		features &= ~NETIF_F_RXHASH;
 		if (netdev->features & NETIF_F_RXHASH)
 			netdev_warn(netdev, "Disabling rxhash, not supported when CQE compress is active\n");
+
+		if (features & NETIF_F_GRO_HW) {
+			netdev_warn(netdev, "Disabling HW-GRO, not supported when CQE compress is active\n");
+			features &= ~NETIF_F_GRO_HW;
+		}
 	}
 
 	if (mlx5e_is_uplink_rep(priv))
-- 
2.33.1