net: remove ndo_neigh_{construct, destroy} from stacked devices

In commit 18bfb924 ("net: introduce default neigh_construct/destroy
ndo calls for L2 upper devices") we added these ndos to stacked devices
such as team and bond, so that calls will be propagated to mlxsw.

However, previous commit removed the reliance on these ndos and no new
users of these ndos have appeared since above mentioned commit. We can
therefore safely remove this dead code.
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/bonding/bond_main.c

@@ -4145,8 +4145,6 @@ static const struct net_device_ops bond_netdev_ops = {
 	.ndo_add_slave		= bond_enslave,
 	.ndo_del_slave		= bond_release,
 	.ndo_fix_features	= bond_fix_features,
-	.ndo_neigh_construct	= netdev_default_l2upper_neigh_construct,
-	.ndo_neigh_destroy	= netdev_default_l2upper_neigh_destroy,
 	.ndo_bridge_setlink	= switchdev_port_bridge_setlink,
 	.ndo_bridge_getlink	= switchdev_port_bridge_getlink,
 	.ndo_bridge_dellink	= switchdev_port_bridge_dellink,

drivers/net/team/team.c

@@ -2001,8 +2001,6 @@ static const struct net_device_ops team_netdev_ops = {
 	.ndo_add_slave		= team_add_slave,
 	.ndo_del_slave		= team_del_slave,
 	.ndo_fix_features	= team_fix_features,
-	.ndo_neigh_construct	= netdev_default_l2upper_neigh_construct,
-	.ndo_neigh_destroy	= netdev_default_l2upper_neigh_destroy,
 	.ndo_change_carrier     = team_change_carrier,
 	.ndo_bridge_setlink	= switchdev_port_bridge_setlink,
 	.ndo_bridge_getlink	= switchdev_port_bridge_getlink,

include/linux/netdevice.h

@@ -3888,10 +3888,6 @@ void *netdev_lower_dev_get_private(struct net_device *dev,
 				   struct net_device *lower_dev);
 void netdev_lower_state_changed(struct net_device *lower_dev,
 				void *lower_state_info);
-int netdev_default_l2upper_neigh_construct(struct net_device *dev,
-					   struct neighbour *n);
-void netdev_default_l2upper_neigh_destroy(struct net_device *dev,
-					  struct neighbour *n);
 
 /* RSS keys are 40 or 52 bytes long */
 #define NETDEV_RSS_KEY_LEN 52

net/8021q/vlan_dev.c

@@ -791,8 +791,6 @@ static const struct net_device_ops vlan_netdev_ops = {
 	.ndo_netpoll_cleanup	= vlan_dev_netpoll_cleanup,
 #endif
 	.ndo_fix_features	= vlan_dev_fix_features,
-	.ndo_neigh_construct	= netdev_default_l2upper_neigh_construct,
-	.ndo_neigh_destroy	= netdev_default_l2upper_neigh_destroy,
 	.ndo_fdb_add		= switchdev_port_fdb_add,
 	.ndo_fdb_del		= switchdev_port_fdb_del,
 	.ndo_fdb_dump		= switchdev_port_fdb_dump,

net/bridge/br_device.c

@@ -347,8 +347,6 @@ static const struct net_device_ops br_netdev_ops = {
 	.ndo_add_slave		 = br_add_slave,
 	.ndo_del_slave		 = br_del_slave,
 	.ndo_fix_features        = br_fix_features,
-	.ndo_neigh_construct	 = netdev_default_l2upper_neigh_construct,
-	.ndo_neigh_destroy	 = netdev_default_l2upper_neigh_destroy,
 	.ndo_fdb_add		 = br_fdb_add,
 	.ndo_fdb_del		 = br_fdb_delete,
 	.ndo_fdb_dump		 = br_fdb_dump,

net/core/dev.c

@@ -6111,50 +6111,6 @@ void netdev_lower_state_changed(struct net_device *lower_dev,
 }
 EXPORT_SYMBOL(netdev_lower_state_changed);
 
-int netdev_default_l2upper_neigh_construct(struct net_device *dev,
-					   struct neighbour *n)
-{
-	struct net_device *lower_dev, *stop_dev;
-	struct list_head *iter;
-	int err;
-
-	netdev_for_each_lower_dev(dev, lower_dev, iter) {
-		if (!lower_dev->netdev_ops->ndo_neigh_construct)
-			continue;
-		err = lower_dev->netdev_ops->ndo_neigh_construct(lower_dev, n);
-		if (err) {
-			stop_dev = lower_dev;
-			goto rollback;
-		}
-	}
-	return 0;
-
-rollback:
-	netdev_for_each_lower_dev(dev, lower_dev, iter) {
-		if (lower_dev == stop_dev)
-			break;
-		if (!lower_dev->netdev_ops->ndo_neigh_destroy)
-			continue;
-		lower_dev->netdev_ops->ndo_neigh_destroy(lower_dev, n);
-	}
-	return err;
-}
-EXPORT_SYMBOL_GPL(netdev_default_l2upper_neigh_construct);
-
-void netdev_default_l2upper_neigh_destroy(struct net_device *dev,
-					  struct neighbour *n)
-{
-	struct net_device *lower_dev;
-	struct list_head *iter;
-
-	netdev_for_each_lower_dev(dev, lower_dev, iter) {
-		if (!lower_dev->netdev_ops->ndo_neigh_destroy)
-			continue;
-		lower_dev->netdev_ops->ndo_neigh_destroy(lower_dev, n);
-	}
-}
-EXPORT_SYMBOL_GPL(netdev_default_l2upper_neigh_destroy);
-
 static void dev_change_rx_flags(struct net_device *dev, int flags)
 {
 	const struct net_device_ops *ops = dev->netdev_ops;