[PATCH 5.4 331/411] net/mlx5e: Update netdev features after changing XDP state

Greg Kroah-Hartman
2022-06-13T11:41:22Z

From: Maxim Mikityanskiy <maximmi@nvidia.com>

[ Upstream commit f6279f113ad593971999c877eb69dc3d36a75894 ]

Some features (LRO, HW GRO) conflict with XDP. If there is an attempt to
enable such features while XDP is active, they will be set to `off
[requested on]`. In order to activate these features after XDP is turned
off, the driver needs to call netdev_update_features(). This commit adds
this missing call after XDP state changes.

Fixes: cf6e34c8c22f ("net/mlx5e: Properly block LRO when XDP is enabled")
Fixes: b0617e7b3500 ("net/mlx5e: Properly block HW GRO when XDP is enabled")
Signed-off-by: Maxim Mikityanskiy <maximmi@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/ethernet/mellanox/mlx5/core/en_main.c | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index 73291051808f..35630b538c82 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -4638,6 +4638,11 @@ static int mlx5e_xdp_set(struct net_device *netdev, struct bpf_prog *prog)

unlock:
mutex_unlock(&priv->state_lock);
+
+ /* Need to fix some features. */
+ if (!err)
+ netdev_update_features(netdev);
+
return err;
}

--
2.35.1