net/mlx5e: Uninstantiate esw manager vport netdev on switchdev mode

Now, when we have a dedicated uplink representor, the netdev instance
set over the esw manager vport (PF) is of no-use. As such, remove it
once we're on switchdev mode and get it back to life when off switchdev.

This is done by reloading the Ethernet interface as well (we already
do that for the IB interface) from the eswitch code while going in/out
of switchdev mode.

The Eth add/remove entries are modified to act differently when called in
switchdev mode. In this case we only deal with registration of the eth
vport representors. The rep netdevices are created from the eswitch call
to load the registered eth representors.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

1 files changed, 16 insertions, 8 deletions

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index 9ee50de4de33..0fd5752fb181 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -4894,9 +4894,6 @@ static void mlx5e_nic_enable(struct mlx5e_priv *priv)
 	if (mlx5e_monitor_counter_supported(priv))
 		mlx5e_monitor_counter_init(priv);
 
-	if (MLX5_ESWITCH_MANAGER(priv->mdev))
-		mlx5e_rep_register_vport_reps(priv);
-
 	if (netdev->reg_state != NETREG_REGISTERED)
 		return;
 #ifdef CONFIG_MLX5_CORE_EN_DCB
@@ -4929,9 +4926,6 @@ static void mlx5e_nic_disable(struct mlx5e_priv *priv)
 
 	queue_work(priv->wq, &priv->set_rx_mode_work);
 
-	if (MLX5_ESWITCH_MANAGER(priv->mdev))
-		mlx5e_rep_unregister_vport_reps(priv);
-
 	if (mlx5e_monitor_counter_supported(priv))
 		mlx5e_monitor_counter_cleanup(priv);
 
@@ -5138,6 +5132,14 @@ static void *mlx5e_add(struct mlx5_core_dev *mdev)
 	if (err)
 		return NULL;
 
+#ifdef CONFIG_MLX5_ESWITCH
+	if (MLX5_ESWITCH_MANAGER(mdev) &&
+	    mlx5_eswitch_mode(mdev->priv.eswitch) == SRIOV_OFFLOADS) {
+		mlx5e_rep_register_vport_reps(mdev);
+		return mdev;
+	}
+#endif
+
 	nch = mlx5e_get_max_num_channels(mdev);
 	netdev = mlx5e_create_netdev(mdev, &mlx5e_nic_profile, nch, NULL);
 	if (!netdev) {
@@ -5173,9 +5175,15 @@ err_destroy_netdev:
 
 static void mlx5e_remove(struct mlx5_core_dev *mdev, void *vpriv)
 {
-	struct mlx5e_priv *priv = vpriv;
-	void *ppriv = priv->ppriv;
+	struct mlx5e_priv *priv;
 
+#ifdef CONFIG_MLX5_ESWITCH
+	if (MLX5_ESWITCH_MANAGER(mdev) && vpriv == mdev) {
+		mlx5e_rep_unregister_vport_reps(mdev);
+		return;
+	}
+#endif
+	priv = vpriv;
 #ifdef CONFIG_MLX5_CORE_EN_DCB
 	mlx5e_dcbnl_delete_app(priv);
 #endif