linux-kernel - [PATCH 5.17 105/158] net/mlx5e: Block rx-gro-hw feature in switchdev mode

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Date:   Mon, 23 May 2022 19:04:22 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Aya Levin <ayal@...dia.com>,
        Tariq Toukan <tariqt@...dia.com>,
        Saeed Mahameed <saeedm@...dia.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.17 105/158] net/mlx5e: Block rx-gro-hw feature in switchdev mode

From: Aya Levin <ayal@...dia.com>

[ Upstream commit 15a5078cab30d7aa02ad14bfadebf247d95fc239 ]

When the driver is in switchdev mode and rx-gro-hw is set, the RQ needs
special CQE handling. Till then, block setting of rx-gro-hw feature in
switchdev mode, to avoid failure while setting the feature due to
failure while opening the RQ.

Fixes: f97d5c2a453e ("net/mlx5e: Add handle SHAMPO cqe support")
Signed-off-by: Aya Levin <ayal@...dia.com>
Reviewed-by: Tariq Toukan <tariqt@...dia.com>
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index 169e3524bb1c..d468daa7dc20 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -3829,6 +3829,10 @@ static netdev_features_t mlx5e_fix_uplink_rep_features(struct net_device *netdev
 	if (netdev->features & NETIF_F_NTUPLE)
 		netdev_warn(netdev, "Disabling ntuple, not supported in switchdev mode\n");
 
+	features &= ~NETIF_F_GRO_HW;
+	if (netdev->features & NETIF_F_GRO_HW)
+		netdev_warn(netdev, "Disabling HW_GRO, not supported in switchdev mode\n");
+
 	return features;
 }
 
-- 
2.35.1