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Date:   Mon, 22 Aug 2022 12:59:13 -0700
From:   Saeed Mahameed <>
To:     "David S. Miller" <>,
        Jakub Kicinski <>,
        Paolo Abeni <>,
        Eric Dumazet <>
Cc:     Saeed Mahameed <>,,
        Maor Dickman <>
Subject: [net 09/13] net/mlx5e: Fix wrong tc flag used when set hw-tc-offload off

From: Maor Dickman <>

The cited commit reintroduced the ability to set hw-tc-offload
in switchdev mode by reusing NIC mode calls without modifying it
to support both modes, this can cause an illegal memory access
when trying to turn hw-tc-offload off.

Fix this by using the right TC_FLAG when checking if tc rules
are installed while disabling hw-tc-offload.

Fixes: d3cbd4254df8 ("net/mlx5e: Add ndo_set_feature for uplink representor")
Signed-off-by: Maor Dickman <>
Signed-off-by: Saeed Mahameed <>
 drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index c65b6a2883d3..02eb2f0fa2ae 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -3682,7 +3682,9 @@ static int set_feature_hw_tc(struct net_device *netdev, bool enable)
 	int err = 0;
-	if (!enable && mlx5e_tc_num_filters(priv, MLX5_TC_FLAG(NIC_OFFLOAD))) {
+	int tc_flag = mlx5e_is_uplink_rep(priv) ? MLX5_TC_FLAG(ESW_OFFLOAD) :
+	if (!enable && mlx5e_tc_num_filters(priv, tc_flag)) {
 			   "Active offloaded tc filters, can't turn hw_tc_offload off\n");
 		return -EINVAL;

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