mlxsw: spectrum_switchdev: Publish mlxsw_sp_switchdev_notifier

The notifier block will need to be passed to vxlan_fdb_replay() in a
follow-up patch.
Signed-off-by: NPetr Machata <petrm@mellanox.com>
Signed-off-by: NIdo Schimmel <idosch@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/mellanox/mlxsw/spectrum.h

@@ -387,6 +387,7 @@ int mlxsw_sp_bridge_vxlan_join(struct mlxsw_sp *mlxsw_sp,
 			       struct netlink_ext_ack *extack);
 void mlxsw_sp_bridge_vxlan_leave(struct mlxsw_sp *mlxsw_sp,
 				 const struct net_device *vxlan_dev);
+extern struct notifier_block mlxsw_sp_switchdev_notifier;
 
 /* spectrum.c */
 int mlxsw_sp_port_ets_set(struct mlxsw_sp_port *mlxsw_sp_port,

drivers/net/ethernet/mellanox/mlxsw/spectrum_switchdev.c

@@ -3186,7 +3186,7 @@ static int mlxsw_sp_switchdev_event(struct notifier_block *unused,
 	return NOTIFY_BAD;
 }
 
-static struct notifier_block mlxsw_sp_switchdev_notifier = {
+struct notifier_block mlxsw_sp_switchdev_notifier = {
 	.notifier_call = mlxsw_sp_switchdev_event,
 };