1 files changed, 102 insertions, 117 deletions

diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index 23be8e01026b..eb9d9e53c536 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -286,7 +286,7 @@ static int dsa_slave_port_attr_set(struct net_device *dev, const void *ctx,
 		if (!dsa_port_offloads_bridge_port(dp, attr->orig_dev))
 			return -EOPNOTSUPP;
 
-		ret = dsa_port_set_state(dp, attr->u.stp_state);
+		ret = dsa_port_set_state(dp, attr->u.stp_state, true);
 		break;
 	case SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING:
 		if (!dsa_port_offloads_bridge(dp, attr->orig_dev))
@@ -314,12 +314,6 @@ static int dsa_slave_port_attr_set(struct net_device *dev, const void *ctx,
 
 		ret = dsa_port_bridge_flags(dp, attr->u.brport_flags, extack);
 		break;
-	case SWITCHDEV_ATTR_ID_BRIDGE_MROUTER:
-		if (!dsa_port_offloads_bridge(dp, attr->orig_dev))
-			return -EOPNOTSUPP;
-
-		ret = dsa_port_mrouter(dp->cpu_dp, attr->u.mrouter, extack);
-		break;
 	default:
 		ret = -EOPNOTSUPP;
 		break;
@@ -1687,7 +1681,7 @@ static const struct net_device_ops dsa_slave_netdev_ops = {
 	.ndo_set_rx_mode	= dsa_slave_set_rx_mode,
 	.ndo_set_mac_address	= dsa_slave_set_mac_address,
 	.ndo_fdb_dump		= dsa_slave_fdb_dump,
-	.ndo_do_ioctl		= dsa_slave_ioctl,
+	.ndo_eth_ioctl		= dsa_slave_ioctl,
 	.ndo_get_iflink		= dsa_slave_get_iflink,
 #ifdef CONFIG_NET_POLL_CONTROLLER
 	.ndo_netpoll_setup	= dsa_slave_netpoll_setup,
@@ -2056,20 +2050,16 @@ static int dsa_slave_prechangeupper(struct net_device *dev,
 				    struct netdev_notifier_changeupper_info *info)
 {
 	struct dsa_port *dp = dsa_slave_to_port(dev);
-	struct netlink_ext_ack *extack;
-	int err = 0;
-
-	extack = netdev_notifier_info_to_extack(&info->info);
 
 	if (netif_is_bridge_master(info->upper_dev) && !info->linking)
-		err = dsa_port_pre_bridge_leave(dp, info->upper_dev, extack);
+		dsa_port_pre_bridge_leave(dp, info->upper_dev);
 	else if (netif_is_lag_master(info->upper_dev) && !info->linking)
-		err = dsa_port_pre_lag_leave(dp, info->upper_dev, extack);
+		dsa_port_pre_lag_leave(dp, info->upper_dev);
 	/* dsa_port_pre_hsr_leave is not yet necessary since hsr cannot be
 	 * meaningfully enslaved to a bridge yet
 	 */
 
-	return notifier_from_errno(err);
+	return NOTIFY_DONE;
 }
 
 static int
@@ -2357,26 +2347,98 @@ static void dsa_slave_switchdev_event_work(struct work_struct *work)
 	kfree(switchdev_work);
 }
 
-static int dsa_lower_dev_walk(struct net_device *lower_dev,
-			      struct netdev_nested_priv *priv)
+static bool dsa_foreign_dev_check(const struct net_device *dev,
+				  const struct net_device *foreign_dev)
 {
-	if (dsa_slave_dev_check(lower_dev)) {
-		priv->data = (void *)netdev_priv(lower_dev);
-		return 1;
-	}
+	const struct dsa_port *dp = dsa_slave_to_port(dev);
+	struct dsa_switch_tree *dst = dp->ds->dst;
 
-	return 0;
+	if (netif_is_bridge_master(foreign_dev))
+		return !dsa_tree_offloads_bridge(dst, foreign_dev);
+
+	if (netif_is_bridge_port(foreign_dev))
+		return !dsa_tree_offloads_bridge_port(dst, foreign_dev);
+
+	/* Everything else is foreign */
+	return true;
 }
 
-static struct dsa_slave_priv *dsa_slave_dev_lower_find(struct net_device *dev)
+static int dsa_slave_fdb_event(struct net_device *dev,
+			       const struct net_device *orig_dev,
+			       const void *ctx,
+			       const struct switchdev_notifier_fdb_info *fdb_info,
+			       unsigned long event)
 {
-	struct netdev_nested_priv priv = {
-		.data = NULL,
-	};
+	struct dsa_switchdev_event_work *switchdev_work;
+	struct dsa_port *dp = dsa_slave_to_port(dev);
+	bool host_addr = fdb_info->is_local;
+	struct dsa_switch *ds = dp->ds;
+
+	if (ctx && ctx != dp)
+		return 0;
+
+	if (!ds->ops->port_fdb_add || !ds->ops->port_fdb_del)
+		return -EOPNOTSUPP;
+
+	if (dsa_slave_dev_check(orig_dev) &&
+	    switchdev_fdb_is_dynamically_learned(fdb_info))
+		return 0;
 
-	netdev_walk_all_lower_dev_rcu(dev, dsa_lower_dev_walk, &priv);
+	/* FDB entries learned by the software bridge should be installed as
+	 * host addresses only if the driver requests assisted learning.
+	 */
+	if (switchdev_fdb_is_dynamically_learned(fdb_info) &&
+	    !ds->assisted_learning_on_cpu_port)
+		return 0;
+
+	/* Also treat FDB entries on foreign interfaces bridged with us as host
+	 * addresses.
+	 */
+	if (dsa_foreign_dev_check(dev, orig_dev))
+		host_addr = true;
 
-	return (struct dsa_slave_priv *)priv.data;
+	switchdev_work = kzalloc(sizeof(*switchdev_work), GFP_ATOMIC);
+	if (!switchdev_work)
+		return -ENOMEM;
+
+	netdev_dbg(dev, "%s FDB entry towards %s, addr %pM vid %d%s\n",
+		   event == SWITCHDEV_FDB_ADD_TO_DEVICE ? "Adding" : "Deleting",
+		   orig_dev->name, fdb_info->addr, fdb_info->vid,
+		   host_addr ? " as host address" : "");
+
+	INIT_WORK(&switchdev_work->work, dsa_slave_switchdev_event_work);
+	switchdev_work->ds = ds;
+	switchdev_work->port = dp->index;
+	switchdev_work->event = event;
+	switchdev_work->dev = dev;
+
+	ether_addr_copy(switchdev_work->addr, fdb_info->addr);
+	switchdev_work->vid = fdb_info->vid;
+	switchdev_work->host_addr = host_addr;
+
+	/* Hold a reference for dsa_fdb_offload_notify */
+	dev_hold(dev);
+	dsa_schedule_work(&switchdev_work->work);
+
+	return 0;
+}
+
+static int
+dsa_slave_fdb_add_to_device(struct net_device *dev,
+			    const struct net_device *orig_dev, const void *ctx,
+			    const struct switchdev_notifier_fdb_info *fdb_info)
+{
+	return dsa_slave_fdb_event(dev, orig_dev, ctx, fdb_info,
+				   SWITCHDEV_FDB_ADD_TO_DEVICE);
+}
+
+static int
+dsa_slave_fdb_del_to_device(struct net_device *dev,
+			    const struct net_device *orig_dev, const void *ctx,
+			    const struct switchdev_notifier_fdb_info *fdb_info)
+{
+	return dsa_slave_fdb_event(dev, orig_dev, ctx, fdb_info,
+				   SWITCHDEV_FDB_DEL_TO_DEVICE);
 }
 
 /* Called under rcu_read_lock() */
@@ -2384,10 +2446,6 @@ static int dsa_slave_switchdev_event(struct notifier_block *unused,
 				     unsigned long event, void *ptr)
 {
 	struct net_device *dev = switchdev_notifier_info_to_dev(ptr);
-	const struct switchdev_notifier_fdb_info *fdb_info;
-	struct dsa_switchdev_event_work *switchdev_work;
-	bool host_addr = false;
-	struct dsa_port *dp;
 	int err;
 
 	switch (event) {
@@ -2397,92 +2455,19 @@ static int dsa_slave_switchdev_event(struct notifier_block *unused,
 						     dsa_slave_port_attr_set);
 		return notifier_from_errno(err);
 	case SWITCHDEV_FDB_ADD_TO_DEVICE:
+		err = switchdev_handle_fdb_add_to_device(dev, ptr,
+							 dsa_slave_dev_check,
+							 dsa_foreign_dev_check,
+							 dsa_slave_fdb_add_to_device,
+							 NULL);
+		return notifier_from_errno(err);
 	case SWITCHDEV_FDB_DEL_TO_DEVICE:
-		fdb_info = ptr;
-
-		if (dsa_slave_dev_check(dev)) {
-			dp = dsa_slave_to_port(dev);
-
-			if (fdb_info->is_local)
-				host_addr = true;
-			else if (!fdb_info->added_by_user)
-				return NOTIFY_OK;
-		} else {
-			/* Snoop addresses added to foreign interfaces
-			 * bridged with us, or the bridge
-			 * itself. Dynamically learned addresses can
-			 * also be added for switches that don't
-			 * automatically learn SA from CPU-injected
-			 * traffic.
-			 */
-			struct net_device *br_dev;
-			struct dsa_slave_priv *p;
-
-			if (netif_is_bridge_master(dev))
-				br_dev = dev;
-			else
-				br_dev = netdev_master_upper_dev_get_rcu(dev);
-
-			if (!br_dev)
-				return NOTIFY_DONE;
-
-			if (!netif_is_bridge_master(br_dev))
-				return NOTIFY_DONE;
-
-			p = dsa_slave_dev_lower_find(br_dev);
-			if (!p)
-				return NOTIFY_DONE;
-
-			dp = p->dp;
-			host_addr = fdb_info->is_local;
-
-			/* FDB entries learned by the software bridge should
-			 * be installed as host addresses only if the driver
-			 * requests assisted learning.
-			 * On the other hand, FDB entries for local termination
-			 * should always be installed.
-			 */
-			if (!fdb_info->added_by_user && !fdb_info->is_local &&
-			    !dp->ds->assisted_learning_on_cpu_port)
-				return NOTIFY_DONE;
-
-			/* When the bridge learns an address on an offloaded
-			 * LAG we don't want to send traffic to the CPU, the
-			 * other ports bridged with the LAG should be able to
-			 * autonomously forward towards it.
-			 * On the other hand, if the address is local
-			 * (therefore not learned) then we want to trap it to
-			 * the CPU regardless of whether the interface it
-			 * belongs to is offloaded or not.
-			 */
-			if (dsa_tree_offloads_bridge_port(dp->ds->dst, dev) &&
-			    !fdb_info->is_local)
-				return NOTIFY_DONE;
-		}
-
-		if (!dp->ds->ops->port_fdb_add || !dp->ds->ops->port_fdb_del)
-			return NOTIFY_DONE;
-
-		switchdev_work = kzalloc(sizeof(*switchdev_work), GFP_ATOMIC);
-		if (!switchdev_work)
-			return NOTIFY_BAD;
-
-		INIT_WORK(&switchdev_work->work,
-			  dsa_slave_switchdev_event_work);
-		switchdev_work->ds = dp->ds;
-		switchdev_work->port = dp->index;
-		switchdev_work->event = event;
-		switchdev_work->dev = dev;
-
-		ether_addr_copy(switchdev_work->addr,
-				fdb_info->addr);
-		switchdev_work->vid = fdb_info->vid;
-		switchdev_work->host_addr = host_addr;
-
-		/* Hold a reference for dsa_fdb_offload_notify */
-		dev_hold(dev);
-		dsa_schedule_work(&switchdev_work->work);
-		break;
+		err = switchdev_handle_fdb_del_to_device(dev, ptr,
+							 dsa_slave_dev_check,
+							 dsa_foreign_dev_check,
+							 dsa_slave_fdb_del_to_device,
+							 NULL);
+		return notifier_from_errno(err);
 	default:
 		return NOTIFY_DONE;
 	}