mlx5: register lag notifier for init network namespace only

The current code causes problems when the unregistering netdevice could
be different then the registering one.

Since the check in mlx5_lag_netdev_event() does not allow any other
network namespace anyway, fix this by registerting the lag notifier
per init network namespace only.

Fixes: d48834f9d4b4 ("mlx5: Use dev_net netdevice notifier registrations")
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Tested-by: Aya Levin <ayal@mellanox.com>
Acked-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index 9669836..21de476 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -5147,7 +5147,6 @@ static void mlx5e_nic_enable(struct mlx5e_priv *priv)
 
 static void mlx5e_nic_disable(struct mlx5e_priv *priv)
 {
-       struct net_device *netdev = priv->netdev;
        struct mlx5_core_dev *mdev = priv->mdev;
 
 #ifdef CONFIG_MLX5_CORE_EN_DCB
@@ -5168,7 +5167,7 @@ static void mlx5e_nic_disable(struct mlx5e_priv *priv)
                mlx5e_monitor_counter_cleanup(priv);
 
        mlx5e_disable_async_events(priv);
-       mlx5_lag_remove(mdev, netdev);
+       mlx5_lag_remove(mdev);
 }
 
 int mlx5e_update_nic_rx(struct mlx5e_priv *priv)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
index 7b48cca..6ed307d 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
@@ -1861,7 +1861,6 @@ static void mlx5e_uplink_rep_enable(struct mlx5e_priv *priv)
 
 static void mlx5e_uplink_rep_disable(struct mlx5e_priv *priv)
 {
-       struct net_device *netdev = priv->netdev;
        struct mlx5_core_dev *mdev = priv->mdev;
        struct mlx5e_rep_priv *rpriv = priv->ppriv;
 
@@ -1870,7 +1869,7 @@ static void mlx5e_uplink_rep_disable(struct mlx5e_priv *priv)
 #endif
        mlx5_notifier_unregister(mdev, &priv->events_nb);
        cancel_work_sync(&rpriv->uplink_priv.reoffload_flows_work);
-       mlx5_lag_remove(mdev, netdev);
+       mlx5_lag_remove(mdev);
 }
 
 static MLX5E_DEFINE_STATS_GRP(sw_rep, 0);

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lag.c b/drivers/net/ethernet/mellanox/mlx5/core/lag.c
index b91eabc..8e19f6a 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/lag.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/lag.c
@@ -464,9 +464,6 @@ static int mlx5_lag_netdev_event(struct notifier_block *this,
        struct mlx5_lag *ldev;
        int changed = 0;
 
-       if (!net_eq(dev_net(ndev), &init_net))
-               return NOTIFY_DONE;
-
        if ((event != NETDEV_CHANGEUPPER) && (event != NETDEV_CHANGELOWERSTATE))
                return NOTIFY_DONE;
 
@@ -586,8 +583,7 @@ void mlx5_lag_add(struct mlx5_core_dev *dev, struct net_device *netdev)
 
        if (!ldev->nb.notifier_call) {
                ldev->nb.notifier_call = mlx5_lag_netdev_event;
-               if (register_netdevice_notifier_dev_net(netdev, &ldev->nb,
-                                                       &ldev->nn)) {
+               if (register_netdevice_notifier_net(&init_net, &ldev->nb)) {
                        ldev->nb.notifier_call = NULL;
                        mlx5_core_err(dev, "Failed to register LAG netdev notifier\n");
                }
@@ -600,7 +596,7 @@ void mlx5_lag_add(struct mlx5_core_dev *dev, struct net_device *netdev)
 }
 
 /* Must be called with intf_mutex held */
-void mlx5_lag_remove(struct mlx5_core_dev *dev, struct net_device *netdev)
+void mlx5_lag_remove(struct mlx5_core_dev *dev)
 {
        struct mlx5_lag *ldev;
        int i;
@@ -620,8 +616,7 @@ void mlx5_lag_remove(struct mlx5_core_dev *dev, struct net_device *netdev)
 
        if (i == MLX5_MAX_PORTS) {
                if (ldev->nb.notifier_call)
-                       unregister_netdevice_notifier_dev_net(netdev, &ldev->nb,
-                                                             &ldev->nn);
+                       unregister_netdevice_notifier_net(&init_net, &ldev->nb);
                mlx5_lag_mp_cleanup(ldev);
                cancel_delayed_work_sync(&ldev->bond_work);
                mlx5_lag_dev_free(ldev);

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/lag.h b/drivers/net/ethernet/mellanox/mlx5/core/lag.h
index 316ab09..f1068aa 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/lag.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/lag.h
@@ -44,7 +44,6 @@ struct mlx5_lag {
        struct workqueue_struct   *wq;
        struct delayed_work       bond_work;
        struct notifier_block     nb;
-       struct netdev_net_notifier      nn;
        struct lag_mp             lag_mp;
 };
 

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h b/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
index fcce9e0..da67b28 100644 (file)
--- a/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
@@ -157,7 +157,7 @@ int mlx5_query_qcam_reg(struct mlx5_core_dev *mdev, u32 *qcam,
                        u8 feature_group, u8 access_reg_group);
 
 void mlx5_lag_add(struct mlx5_core_dev *dev, struct net_device *netdev);
-void mlx5_lag_remove(struct mlx5_core_dev *dev, struct net_device *netdev);
+void mlx5_lag_remove(struct mlx5_core_dev *dev);
 
 int mlx5_irq_table_init(struct mlx5_core_dev *dev);
 void mlx5_irq_table_cleanup(struct mlx5_core_dev *dev);