From: Maor Dickman <maord@xxxxxxxxxx>
[ Upstream commit 550f96432e6f6770efdaee0e65239d61431062a1 ]
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 <maord@xxxxxxxxxx>
Signed-off-by: Saeed Mahameed <saeedm@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
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 fdf8d9866042c..c1c4f380803a1 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -3325,7 +3325,9 @@ static int set_feature_hw_tc(struct net_device *netdev, bool enable)
struct mlx5e_priv *priv = netdev_priv(netdev);
#if IS_ENABLED(CONFIG_MLX5_CLS_ACT)
- 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) :
+ MLX5_TC_FLAG(NIC_OFFLOAD);
+ if (!enable && mlx5e_tc_num_filters(priv, tc_flag)) {
netdev_err(netdev,
"Active offloaded tc filters, can't turn hw_tc_offload off\n");
return -EINVAL;
--
2.35.1
