Merge branch 'lan966x-lag-support'

Horatiu Vultur says:

====================
net: lan966x: Add lag support

Add lag support for lan966x.
First 4 patches don't do any changes to the current behaviour, they
just prepare for lag support. While the rest is to add the lag support.

v3->v4:
- aggregation configuration is global for all bonds, so make sure that
  there can't be enabled multiple configurations at the same time
- return error faster from lan966x_foreign_bridging_check, don't
  continue the search if the error is seen already
- flush fdb workqueue when a port leaves a bridge or lag.

v2->v3:
- return error code from 'switchdev_bridge_port_offload()'
- fix lan966x_foreign_dev_check(), it was missing lag support
- remove lan966x_lag_mac_add_entry and lan966x_mac_del_entry as
  they are not needed
- fix race conditions when accessing port->bond
- move FDB entries when a new port joins the lag if it has a lower

v1->v2:
- fix the LAG PGIDs when ports go down, in this way is not
  needed anymore the last patch of the series.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/microchip/lan966x/Kconfig

@@ -4,6 +4,7 @@ config LAN966X_SWITCH
 	depends on HAS_IOMEM
 	depends on OF
 	depends on NET_SWITCHDEV
+	depends on BRIDGE || BRIDGE=n
 	select PHYLINK
 	select PACKING
 	help

drivers/net/ethernet/microchip/lan966x/Makefile

@@ -8,4 +8,4 @@ obj-$(CONFIG_LAN966X_SWITCH) += lan966x-switch.o
 lan966x-switch-objs  := lan966x_main.o lan966x_phylink.o lan966x_port.o \
 			lan966x_mac.o lan966x_ethtool.o lan966x_switchdev.o \
 			lan966x_vlan.o lan966x_fdb.o lan966x_mdb.o \
-			lan966x_ptp.o lan966x_fdma.o
+			lan966x_ptp.o lan966x_fdma.o lan966x_lag.o

drivers/net/ethernet/microchip/lan966x/lan966x_fdb.c

@@ -8,6 +8,7 @@ struct lan966x_fdb_event_work {
 	struct work_struct work;
 	struct switchdev_notifier_fdb_info fdb_info;
 	struct net_device *dev;
+	struct net_device *orig_dev;
 	struct lan966x *lan966x;
 	unsigned long event;
 };
@@ -127,75 +128,119 @@ void lan966x_fdb_deinit(struct lan966x *lan966x)
 	lan966x_fdb_purge_entries(lan966x);
 }
 
-static void lan966x_fdb_event_work(struct work_struct *work)
+void lan966x_fdb_flush_workqueue(struct lan966x *lan966x)
+{
+	flush_workqueue(lan966x->fdb_work);
+}
+
+static void lan966x_fdb_port_event_work(struct lan966x_fdb_event_work *fdb_work)
 {
-	struct lan966x_fdb_event_work *fdb_work =
-		container_of(work, struct lan966x_fdb_event_work, work);
 	struct switchdev_notifier_fdb_info *fdb_info;
-	struct net_device *dev = fdb_work->dev;
 	struct lan966x_port *port;
 	struct lan966x *lan966x;
-	int ret;
 
-	fdb_info = &fdb_work->fdb_info;
 	lan966x = fdb_work->lan966x;
+	port = netdev_priv(fdb_work->orig_dev);
+	fdb_info = &fdb_work->fdb_info;
 
-	if (lan966x_netdevice_check(dev)) {
-		port = netdev_priv(dev);
+	switch (fdb_work->event) {
+	case SWITCHDEV_FDB_ADD_TO_DEVICE:
+		if (!fdb_info->added_by_user)
+			break;
+		lan966x_mac_add_entry(lan966x, port, fdb_info->addr,
+				      fdb_info->vid);
+		break;
+	case SWITCHDEV_FDB_DEL_TO_DEVICE:
+		if (!fdb_info->added_by_user)
+			break;
+		lan966x_mac_del_entry(lan966x, fdb_info->addr,
+				      fdb_info->vid);
+		break;
+	}
+}
+
+static void lan966x_fdb_bridge_event_work(struct lan966x_fdb_event_work *fdb_work)
+{
+	struct switchdev_notifier_fdb_info *fdb_info;
+	struct lan966x *lan966x;
+	int ret;
 
-		switch (fdb_work->event) {
-		case SWITCHDEV_FDB_ADD_TO_DEVICE:
-			if (!fdb_info->added_by_user)
-				break;
-			lan966x_mac_add_entry(lan966x, port, fdb_info->addr,
-					      fdb_info->vid);
+	lan966x = fdb_work->lan966x;
+	fdb_info = &fdb_work->fdb_info;
+
+	/* In case the bridge is called */
+	switch (fdb_work->event) {
+	case SWITCHDEV_FDB_ADD_TO_DEVICE:
+		/* If there is no front port in this vlan, there is no
+		 * point to copy the frame to CPU because it would be
+		 * just dropped at later point. So add it only if
+		 * there is a port but it is required to store the fdb
+		 * entry for later point when a port actually gets in
+		 * the vlan.
+		 */
+		lan966x_fdb_add_entry(lan966x, fdb_info);
+		if (!lan966x_vlan_cpu_member_cpu_vlan_mask(lan966x,
+							   fdb_info->vid))
 			break;
-		case SWITCHDEV_FDB_DEL_TO_DEVICE:
-			if (!fdb_info->added_by_user)
-				break;
-			lan966x_mac_del_entry(lan966x, fdb_info->addr,
-					      fdb_info->vid);
+
+		lan966x_mac_cpu_learn(lan966x, fdb_info->addr,
+				      fdb_info->vid);
+		break;
+	case SWITCHDEV_FDB_DEL_TO_DEVICE:
+		ret = lan966x_fdb_del_entry(lan966x, fdb_info);
+		if (!lan966x_vlan_cpu_member_cpu_vlan_mask(lan966x,
+							   fdb_info->vid))
 			break;
-		}
-	} else {
-		if (!netif_is_bridge_master(dev))
-			goto out;
-
-		/* In case the bridge is called */
-		switch (fdb_work->event) {
-		case SWITCHDEV_FDB_ADD_TO_DEVICE:
-			/* If there is no front port in this vlan, there is no
-			 * point to copy the frame to CPU because it would be
-			 * just dropped at later point. So add it only if
-			 * there is a port but it is required to store the fdb
-			 * entry for later point when a port actually gets in
-			 * the vlan.
-			 */
-			lan966x_fdb_add_entry(lan966x, fdb_info);
-			if (!lan966x_vlan_cpu_member_cpu_vlan_mask(lan966x,
-								   fdb_info->vid))
-				break;
-
-			lan966x_mac_cpu_learn(lan966x, fdb_info->addr,
-					      fdb_info->vid);
+
+		if (ret)
+			lan966x_mac_cpu_forget(lan966x, fdb_info->addr,
+					       fdb_info->vid);
+		break;
+	}
+}
+
+static void lan966x_fdb_lag_event_work(struct lan966x_fdb_event_work *fdb_work)
+{
+	struct switchdev_notifier_fdb_info *fdb_info;
+	struct lan966x_port *port;
+	struct lan966x *lan966x;
+
+	if (!lan966x_lag_first_port(fdb_work->orig_dev, fdb_work->dev))
+		return;
+
+	lan966x = fdb_work->lan966x;
+	port = netdev_priv(fdb_work->dev);
+	fdb_info = &fdb_work->fdb_info;
+
+	switch (fdb_work->event) {
+	case SWITCHDEV_FDB_ADD_TO_DEVICE:
+		if (!fdb_info->added_by_user)
 			break;
-		case SWITCHDEV_FDB_DEL_TO_DEVICE:
-			ret = lan966x_fdb_del_entry(lan966x, fdb_info);
-			if (!lan966x_vlan_cpu_member_cpu_vlan_mask(lan966x,
-								   fdb_info->vid))
-				break;
-
-			if (ret)
-				lan966x_mac_cpu_forget(lan966x, fdb_info->addr,
-						       fdb_info->vid);
+		lan966x_mac_add_entry(lan966x, port, fdb_info->addr,
+				      fdb_info->vid);
+		break;
+	case SWITCHDEV_FDB_DEL_TO_DEVICE:
+		if (!fdb_info->added_by_user)
 			break;
-		}
+		lan966x_mac_del_entry(lan966x, fdb_info->addr, fdb_info->vid);
+		break;
 	}
+}
+
+static void lan966x_fdb_event_work(struct work_struct *work)
+{
+	struct lan966x_fdb_event_work *fdb_work =
+		container_of(work, struct lan966x_fdb_event_work, work);
+
+	if (lan966x_netdevice_check(fdb_work->orig_dev))
+		lan966x_fdb_port_event_work(fdb_work);
+	else if (netif_is_bridge_master(fdb_work->orig_dev))
+		lan966x_fdb_bridge_event_work(fdb_work);
+	else if (netif_is_lag_master(fdb_work->orig_dev))
+		lan966x_fdb_lag_event_work(fdb_work);
 
-out:
 	kfree(fdb_work->fdb_info.addr);
 	kfree(fdb_work);
-	dev_put(dev);
 }
 
 int lan966x_handle_fdb(struct net_device *dev,
@@ -221,7 +266,8 @@ int lan966x_handle_fdb(struct net_device *dev,
 		if (!fdb_work)
 			return -ENOMEM;
 
-		fdb_work->dev = orig_dev;
+		fdb_work->dev = dev;
+		fdb_work->orig_dev = orig_dev;
 		fdb_work->lan966x = lan966x;
 		fdb_work->event = event;
 		INIT_WORK(&fdb_work->work, lan966x_fdb_event_work);
@@ -231,7 +277,6 @@ int lan966x_handle_fdb(struct net_device *dev,
 			goto err_addr_alloc;
 
 		ether_addr_copy((u8 *)fdb_work->fdb_info.addr, fdb_info->addr);
-		dev_hold(orig_dev);
 
 		queue_work(lan966x->fdb_work, &fdb_work->work);
 		break;

drivers/net/ethernet/microchip/lan966x/lan966x_lag.c

+// SPDX-License-Identifier: GPL-2.0+
+
+#include <linux/if_bridge.h>
+
+#include "lan966x_main.h"
+
+static void lan966x_lag_set_aggr_pgids(struct lan966x *lan966x)
+{
+	u32 visited = GENMASK(lan966x->num_phys_ports - 1, 0);
+	int p, lag, i;
+
+	/* Reset destination and aggregation PGIDS */
+	for (p = 0; p < lan966x->num_phys_ports; ++p)
+		lan_wr(ANA_PGID_PGID_SET(BIT(p)),
+		       lan966x, ANA_PGID(p));
+
+	for (p = PGID_AGGR; p < PGID_SRC; ++p)
+		lan_wr(ANA_PGID_PGID_SET(visited),
+		       lan966x, ANA_PGID(p));
+
+	/* The visited ports bitmask holds the list of ports offloading any
+	 * bonding interface. Initially we mark all these ports as unvisited,
+	 * then every time we visit a port in this bitmask, we know that it is
+	 * the lowest numbered port, i.e. the one whose logical ID == physical
+	 * port ID == LAG ID. So we mark as visited all further ports in the
+	 * bitmask that are offloading the same bonding interface. This way,
+	 * we set up the aggregation PGIDs only once per bonding interface.
+	 */
+	for (p = 0; p < lan966x->num_phys_ports; ++p) {
+		struct lan966x_port *port = lan966x->ports[p];
+
+		if (!port || !port->bond)
+			continue;
+
+		visited &= ~BIT(p);
+	}
+
+	/* Now, set PGIDs for each active LAG */
+	for (lag = 0; lag < lan966x->num_phys_ports; ++lag) {
+		struct net_device *bond = lan966x->ports[lag]->bond;
+		int num_active_ports = 0;
+		unsigned long bond_mask;
+		u8 aggr_idx[16];
+
+		if (!bond || (visited & BIT(lag)))
+			continue;
+
+		bond_mask = lan966x_lag_get_mask(lan966x, bond);
+
+		for_each_set_bit(p, &bond_mask, lan966x->num_phys_ports) {
+			struct lan966x_port *port = lan966x->ports[p];
+
+			lan_wr(ANA_PGID_PGID_SET(bond_mask),
+			       lan966x, ANA_PGID(p));
+			if (port->lag_tx_active)
+				aggr_idx[num_active_ports++] = p;
+		}
+
+		for (i = PGID_AGGR; i < PGID_SRC; ++i) {
+			u32 ac;
+
+			ac = lan_rd(lan966x, ANA_PGID(i));
+			ac &= ~bond_mask;
+			/* Don't do division by zero if there was no active
+			 * port. Just make all aggregation codes zero.
+			 */
+			if (num_active_ports)
+				ac |= BIT(aggr_idx[i % num_active_ports]);
+			lan_wr(ANA_PGID_PGID_SET(ac),
+			       lan966x, ANA_PGID(i));
+		}
+
+		/* Mark all ports in the same LAG as visited to avoid applying
+		 * the same config again.
+		 */
+		for (p = lag; p < lan966x->num_phys_ports; p++) {
+			struct lan966x_port *port = lan966x->ports[p];
+
+			if (!port)
+				continue;
+
+			if (port->bond == bond)
+				visited |= BIT(p);
+		}
+	}
+}
+
+static void lan966x_lag_set_port_ids(struct lan966x *lan966x)
+{
+	struct lan966x_port *port;
+	u32 bond_mask;
+	u32 lag_id;
+	int p;
+
+	for (p = 0; p < lan966x->num_phys_ports; ++p) {
+		port = lan966x->ports[p];
+		if (!port)
+			continue;
+
+		lag_id = port->chip_port;
+
+		bond_mask = lan966x_lag_get_mask(lan966x, port->bond);
+		if (bond_mask)
+			lag_id = __ffs(bond_mask);
+
+		lan_rmw(ANA_PORT_CFG_PORTID_VAL_SET(lag_id),
+			ANA_PORT_CFG_PORTID_VAL,
+			lan966x, ANA_PORT_CFG(port->chip_port));
+	}
+}
+
+static void lan966x_lag_update_ids(struct lan966x *lan966x)
+{
+	lan966x_lag_set_port_ids(lan966x);
+	lan966x_update_fwd_mask(lan966x);
+	lan966x_lag_set_aggr_pgids(lan966x);
+}
+
+int lan966x_lag_port_join(struct lan966x_port *port,
+			  struct net_device *brport_dev,
+			  struct net_device *bond,
+			  struct netlink_ext_ack *extack)
+{
+	struct lan966x *lan966x = port->lan966x;
+	struct net_device *dev = port->dev;
+	u32 lag_id = -1;
+	u32 bond_mask;
+	int err;
+
+	bond_mask = lan966x_lag_get_mask(lan966x, bond);
+	if (bond_mask)
+		lag_id = __ffs(bond_mask);
+
+	port->bond = bond;
+	lan966x_lag_update_ids(lan966x);
+
+	err = switchdev_bridge_port_offload(brport_dev, dev, port,
+					    &lan966x_switchdev_nb,
+					    &lan966x_switchdev_blocking_nb,
+					    false, extack);
+	if (err)
+		goto out;
+
+	lan966x_port_stp_state_set(port, br_port_get_stp_state(brport_dev));
+
+	if (lan966x_lag_first_port(port->bond, port->dev) &&
+	    lag_id != -1)
+		lan966x_mac_lag_replace_port_entry(lan966x,
+						   lan966x->ports[lag_id],
+						   port);
+
+	return 0;
+
+out:
+	port->bond = NULL;
+	lan966x_lag_update_ids(lan966x);
+
+	return err;
+}
+
+void lan966x_lag_port_leave(struct lan966x_port *port, struct net_device *bond)
+{
+	struct lan966x *lan966x = port->lan966x;
+	u32 bond_mask;
+	u32 lag_id;
+
+	if (lan966x_lag_first_port(port->bond, port->dev)) {
+		bond_mask = lan966x_lag_get_mask(lan966x, port->bond);
+		bond_mask &= ~BIT(port->chip_port);
+		if (bond_mask) {
+			lag_id = __ffs(bond_mask);
+			lan966x_mac_lag_replace_port_entry(lan966x, port,
+							   lan966x->ports[lag_id]);
+		} else {
+			lan966x_mac_lag_remove_port_entry(lan966x, port);
+		}
+	}
+
+	port->bond = NULL;
+	lan966x_lag_update_ids(lan966x);
+	lan966x_port_stp_state_set(port, BR_STATE_FORWARDING);
+}
+
+static bool lan966x_lag_port_check_hash_types(struct lan966x *lan966x,
+					      enum netdev_lag_hash hash_type)
+{
+	int p;
+
+	for (p = 0; p < lan966x->num_phys_ports; ++p) {
+		struct lan966x_port *port = lan966x->ports[p];
+
+		if (!port || !port->bond)
+			continue;
+
+		if (port->hash_type != hash_type)
+			return false;
+	}
+
+	return true;
+}
+
+int lan966x_lag_port_prechangeupper(struct net_device *dev,
+				    struct netdev_notifier_changeupper_info *info)
+{
+	struct lan966x_port *port = netdev_priv(dev);
+	struct lan966x *lan966x = port->lan966x;
+	struct netdev_lag_upper_info *lui;
+	struct netlink_ext_ack *extack;
+
+	extack = netdev_notifier_info_to_extack(&info->info);
+	lui = info->upper_info;
+	if (!lui) {
+		port->hash_type = NETDEV_LAG_HASH_NONE;
+		return NOTIFY_DONE;
+	}
+
+	if (lui->tx_type != NETDEV_LAG_TX_TYPE_HASH) {
+		NL_SET_ERR_MSG_MOD(extack,
+				   "LAG device using unsupported Tx type");
+		return -EINVAL;
+	}
+
+	if (!lan966x_lag_port_check_hash_types(lan966x, lui->hash_type)) {
+		NL_SET_ERR_MSG_MOD(extack,
+				   "LAG devices can have only the same hash_type");
+		return -EINVAL;
+	}
+
+	switch (lui->hash_type) {
+	case NETDEV_LAG_HASH_L2:
+		lan_wr(ANA_AGGR_CFG_AC_DMAC_ENA_SET(1) |
+		       ANA_AGGR_CFG_AC_SMAC_ENA_SET(1),
+		       lan966x, ANA_AGGR_CFG);
+		break;
+	case NETDEV_LAG_HASH_L34:
+		lan_wr(ANA_AGGR_CFG_AC_IP6_TCPUDP_ENA_SET(1) |
+		       ANA_AGGR_CFG_AC_IP4_TCPUDP_ENA_SET(1) |
+		       ANA_AGGR_CFG_AC_IP4_SIPDIP_ENA_SET(1),
+		       lan966x, ANA_AGGR_CFG);
+		break;
+	case NETDEV_LAG_HASH_L23:
+		lan_wr(ANA_AGGR_CFG_AC_DMAC_ENA_SET(1) |
+		       ANA_AGGR_CFG_AC_SMAC_ENA_SET(1) |
+		       ANA_AGGR_CFG_AC_IP6_TCPUDP_ENA_SET(1) |
+		       ANA_AGGR_CFG_AC_IP4_TCPUDP_ENA_SET(1),
+		       lan966x, ANA_AGGR_CFG);
+		break;
+	default:
+		NL_SET_ERR_MSG_MOD(extack,
+				   "LAG device using unsupported hash type");
+		return -EINVAL;
+	}
+
+	port->hash_type = lui->hash_type;
+
+	return NOTIFY_OK;
+}
+
+int lan966x_lag_port_changelowerstate(struct net_device *dev,
+				      struct netdev_notifier_changelowerstate_info *info)
+{
+	struct netdev_lag_lower_state_info *lag = info->lower_state_info;
+	struct lan966x_port *port = netdev_priv(dev);
+	struct lan966x *lan966x = port->lan966x;
+	bool is_active;
+
+	if (!port->bond)
+		return NOTIFY_DONE;
+
+	is_active = lag->link_up && lag->tx_enabled;
+	if (port->lag_tx_active == is_active)
+		return NOTIFY_DONE;
+
+	port->lag_tx_active = is_active;
+	lan966x_lag_set_aggr_pgids(lan966x);
+
+	return NOTIFY_OK;
+}
+
+int lan966x_lag_netdev_prechangeupper(struct net_device *dev,
+				      struct netdev_notifier_changeupper_info *info)
+{
+	struct lan966x_port *port;
+	struct net_device *lower;
+	struct list_head *iter;
+	int err;
+
+	netdev_for_each_lower_dev(dev, lower, iter) {
+		if (!lan966x_netdevice_check(lower))
+			continue;
+
+		port = netdev_priv(lower);
+		if (port->bond != dev)
+			continue;
+
+		err = lan966x_port_prechangeupper(lower, dev, info);
+		if (err)
+			return err;
+	}
+
+	return NOTIFY_DONE;
+}
+
+int lan966x_lag_netdev_changeupper(struct net_device *dev,
+				   struct netdev_notifier_changeupper_info *info)
+{
+	struct lan966x_port *port;
+	struct net_device *lower;
+	struct list_head *iter;
+	int err;
+
+	netdev_for_each_lower_dev(dev, lower, iter) {
+		if (!lan966x_netdevice_check(lower))
+			continue;
+
+		port = netdev_priv(lower);
+		if (port->bond != dev)
+			continue;
+
+		err = lan966x_port_changeupper(lower, dev, info);
+		if (err)
+			return err;
+	}
+
+	return NOTIFY_DONE;
+}
+
+bool lan966x_lag_first_port(struct net_device *lag, struct net_device *dev)
+{
+	struct lan966x_port *port = netdev_priv(dev);
+	struct lan966x *lan966x = port->lan966x;
+	unsigned long bond_mask;
+
+	if (port->bond != lag)
+		return false;
+
+	bond_mask = lan966x_lag_get_mask(lan966x, lag);
+	if (bond_mask && port->chip_port == __ffs(bond_mask))
+		return true;
+
+	return false;
+}
+
+u32 lan966x_lag_get_mask(struct lan966x *lan966x, struct net_device *bond)
+{
+	struct lan966x_port *port;
+	u32 mask = 0;
+	int p;
+
+	if (!bond)
+		return mask;
+
+	for (p = 0; p < lan966x->num_phys_ports; p++) {
+		port = lan966x->ports[p];
+		if (!port)
+			continue;
+
+		if (port->bond == bond)
+			mask |= BIT(p);
+	}
+
+	return mask;
+}

drivers/net/ethernet/microchip/lan966x/lan966x_mac.c

@@ -22,6 +22,7 @@ struct lan966x_mac_entry {
 	u16 vid;
 	u16 port_index;
 	int row;
+	bool lag;
 };
 
 struct lan966x_mac_raw_entry {
@@ -69,15 +70,14 @@ static void lan966x_mac_select(struct lan966x *lan966x,
 	lan_wr(mach, lan966x, ANA_MACHDATA);
 }
 
-static int __lan966x_mac_learn(struct lan966x *lan966x, int pgid,
-			       bool cpu_copy,
-			       const unsigned char mac[ETH_ALEN],
-			       unsigned int vid,
-			       enum macaccess_entry_type type)
+static int __lan966x_mac_learn_locked(struct lan966x *lan966x, int pgid,
+				      bool cpu_copy,
+				      const unsigned char mac[ETH_ALEN],
+				      unsigned int vid,
+				      enum macaccess_entry_type type)
 {
-	int ret;
+	lockdep_assert_held(&lan966x->mac_lock);
 
-	spin_lock(&lan966x->mac_lock);
 	lan966x_mac_select(lan966x, mac, vid);
 
 	/* Issue a write command */
@@ -89,7 +89,19 @@ static int __lan966x_mac_learn(struct lan966x *lan966x, int pgid,
 	       ANA_MACACCESS_MAC_TABLE_CMD_SET(MACACCESS_CMD_LEARN),
 	       lan966x, ANA_MACACCESS);
 
-	ret = lan966x_mac_wait_for_completion(lan966x);
+	return lan966x_mac_wait_for_completion(lan966x);
+}
+
+static int __lan966x_mac_learn(struct lan966x *lan966x, int pgid,
+			       bool cpu_copy,
+			       const unsigned char mac[ETH_ALEN],
+			       unsigned int vid,
+			       enum macaccess_entry_type type)
+{
+	int ret;
+
+	spin_lock(&lan966x->mac_lock);
+	ret = __lan966x_mac_learn_locked(lan966x, pgid, cpu_copy, mac, vid, type);
 	spin_unlock(&lan966x->mac_lock);
 
 	return ret;
@@ -119,6 +131,16 @@ int lan966x_mac_learn(struct lan966x *lan966x, int port,
 	return __lan966x_mac_learn(lan966x, port, false, mac, vid, type);
 }
 
+static int lan966x_mac_learn_locked(struct lan966x *lan966x, int port,
+				    const unsigned char mac[ETH_ALEN],
+				    unsigned int vid,
+				    enum macaccess_entry_type type)
+{
+	WARN_ON(type != ENTRYTYPE_NORMAL && type != ENTRYTYPE_LOCKED);
+
+	return __lan966x_mac_learn_locked(lan966x, port, false, mac, vid, type);
+}
+
 static int lan966x_mac_forget_locked(struct lan966x *lan966x,
 				     const unsigned char mac[ETH_ALEN],
 				     unsigned int vid,
@@ -178,8 +200,9 @@ void lan966x_mac_init(struct lan966x *lan966x)
 	INIT_LIST_HEAD(&lan966x->mac_entries);
 }
 
-static struct lan966x_mac_entry *lan966x_mac_alloc_entry(const unsigned char *mac,
-							 u16 vid, u16 port_index)
+static struct lan966x_mac_entry *lan966x_mac_alloc_entry(struct lan966x_port *port,
+							 const unsigned char *mac,
+							 u16 vid)
 {
 	struct lan966x_mac_entry *mac_entry;
 
@@ -189,8 +212,9 @@ static struct lan966x_mac_entry *lan966x_mac_alloc_entry(const unsigned char *ma
 
 	memcpy(mac_entry->mac, mac, ETH_ALEN);
 	mac_entry->vid = vid;
-	mac_entry->port_index = port_index;
+	mac_entry->port_index = port->chip_port;
 	mac_entry->row = LAN966X_MAC_INVALID_ROW;
+	mac_entry->lag = port->bond ? true : false;
 	return mac_entry;
 }
 
@@ -269,7 +293,7 @@ int lan966x_mac_add_entry(struct lan966x *lan966x, struct lan966x_port *port,
 		goto mac_learn;
 	}
 
-	mac_entry = lan966x_mac_alloc_entry(addr, vid, port->chip_port);
+	mac_entry = lan966x_mac_alloc_entry(port, addr, vid);
 	if (!mac_entry) {
 		spin_unlock(&lan966x->mac_lock);
 		return -ENOMEM;
@@ -278,7 +302,8 @@ int lan966x_mac_add_entry(struct lan966x *lan966x, struct lan966x_port *port,
 	list_add_tail(&mac_entry->list, &lan966x->mac_entries);
 	spin_unlock(&lan966x->mac_lock);
 
-	lan966x_fdb_call_notifiers(SWITCHDEV_FDB_OFFLOADED, addr, vid, port->dev);
+	lan966x_fdb_call_notifiers(SWITCHDEV_FDB_OFFLOADED, addr, vid,
+				   port->bond ?: port->dev);
 
 mac_learn:
 	lan966x_mac_learn(lan966x, port->chip_port, addr, vid, ENTRYTYPE_LOCKED);
@@ -309,6 +334,50 @@ int lan966x_mac_del_entry(struct lan966x *lan966x, const unsigned char *addr,
 	return 0;
 }
 
+void lan966x_mac_lag_replace_port_entry(struct lan966x *lan966x,
+					struct lan966x_port *src,
+					struct lan966x_port *dst)
+{
+	struct lan966x_mac_entry *mac_entry;
+
+	spin_lock(&lan966x->mac_lock);
+	list_for_each_entry(mac_entry, &lan966x->mac_entries, list) {
+		if (mac_entry->port_index == src->chip_port &&
+		    mac_entry->lag) {
+			lan966x_mac_forget_locked(lan966x, mac_entry->mac,
+						  mac_entry->vid,
+						  ENTRYTYPE_LOCKED);
+
+			lan966x_mac_learn_locked(lan966x, dst->chip_port,
+						 mac_entry->mac, mac_entry->vid,
+						 ENTRYTYPE_LOCKED);
+			mac_entry->port_index = dst->chip_port;
+		}
+	}
+	spin_unlock(&lan966x->mac_lock);
+}
+
+void lan966x_mac_lag_remove_port_entry(struct lan966x *lan966x,
+				       struct lan966x_port *src)
+{
+	struct lan966x_mac_entry *mac_entry, *tmp;
+
+	spin_lock(&lan966x->mac_lock);
+	list_for_each_entry_safe(mac_entry, tmp, &lan966x->mac_entries,
+				 list) {
+		if (mac_entry->port_index == src->chip_port &&
+		    mac_entry->lag) {
+			lan966x_mac_forget_locked(lan966x, mac_entry->mac,
+						  mac_entry->vid,
+						  ENTRYTYPE_LOCKED);
+
+			list_del(&mac_entry->list);
+			kfree(mac_entry);
+		}
+	}
+	spin_unlock(&lan966x->mac_lock);
+}
+
 void lan966x_mac_purge_entries(struct lan966x *lan966x)
 {
 	struct lan966x_mac_entry *mac_entry, *tmp;
@@ -354,6 +423,7 @@ static void lan966x_mac_irq_process(struct lan966x *lan966x, u32 row,
 	struct lan966x_mac_entry *mac_entry, *tmp;
 	unsigned char mac[ETH_ALEN] __aligned(2);
 	struct list_head mac_deleted_entries;
+	struct lan966x_port *port;
 	u32 dest_idx;
 	u32 column;
 	u16 vid;
@@ -406,9 +476,10 @@ static void lan966x_mac_irq_process(struct lan966x *lan966x, u32 row,
 		/* Notify the bridge that the entry doesn't exist
 		 * anymore in the HW
 		 */
+		port = lan966x->ports[mac_entry->port_index];
 		lan966x_mac_notifiers(SWITCHDEV_FDB_DEL_TO_BRIDGE,
 				      mac_entry->mac, mac_entry->vid,
-				      lan966x->ports[mac_entry->port_index]->dev);
+				      port->bond ?: port->dev);
 		list_del(&mac_entry->list);
 		kfree(mac_entry);
 	}
@@ -440,7 +511,8 @@ static void lan966x_mac_irq_process(struct lan966x *lan966x, u32 row,
 			continue;
 		}
 
-		mac_entry = lan966x_mac_alloc_entry(mac, vid, dest_idx);
+		port = lan966x->ports[dest_idx];
+		mac_entry = lan966x_mac_alloc_entry(port, mac, vid);
 		if (!mac_entry) {
 			spin_unlock(&lan966x->mac_lock);
 			return;
@@ -451,7 +523,7 @@ static void lan966x_mac_irq_process(struct lan966x *lan966x, u32 row,
 		spin_unlock(&lan966x->mac_lock);
 
 		lan966x_mac_notifiers(SWITCHDEV_FDB_ADD_TO_BRIDGE,
-				      mac, vid, lan966x->ports[dest_idx]->dev);
+				      mac, vid, port->bond ?: port->dev);
 	}
 }
 

drivers/net/ethernet/microchip/lan966x/lan966x_main.h

@@ -292,11 +292,17 @@ struct lan966x_port {
 	u8 ptp_cmd;
 	u16 ts_id;
 	struct sk_buff_head tx_skbs;
+
+	struct net_device *bond;
+	bool lag_tx_active;
+	enum netdev_lag_hash hash_type;
 };
 
 extern const struct phylink_mac_ops lan966x_phylink_mac_ops;
 extern const struct phylink_pcs_ops lan966x_phylink_pcs_ops;
 extern const struct ethtool_ops lan966x_ethtool_ops;
+extern struct notifier_block lan966x_switchdev_nb __read_mostly;
+extern struct notifier_block lan966x_switchdev_blocking_nb __read_mostly;
 
 bool lan966x_netdevice_check(const struct net_device *dev);
 
@@ -345,6 +351,11 @@ int lan966x_mac_add_entry(struct lan966x *lan966x,
 			  struct lan966x_port *port,
 			  const unsigned char *addr,
 			  u16 vid);
+void lan966x_mac_lag_replace_port_entry(struct lan966x *lan966x,
+					struct lan966x_port *src,
+					struct lan966x_port *dst);
+void lan966x_mac_lag_remove_port_entry(struct lan966x *lan966x,
+				       struct lan966x_port *src);
 void lan966x_mac_purge_entries(struct lan966x *lan966x);
 irqreturn_t lan966x_mac_irq_handler(struct lan966x *lan966x);
 
@@ -369,6 +380,7 @@ void lan966x_fdb_write_entries(struct lan966x *lan966x, u16 vid);
 void lan966x_fdb_erase_entries(struct lan966x *lan966x, u16 vid);
 int lan966x_fdb_init(struct lan966x *lan966x);
 void lan966x_fdb_deinit(struct lan966x *lan966x);
+void lan966x_fdb_flush_workqueue(struct lan966x *lan966x);
 int lan966x_handle_fdb(struct net_device *dev,
 		       struct net_device *orig_dev,
 		       unsigned long event, const void *ctx,
@@ -406,6 +418,33 @@ int lan966x_fdma_init(struct lan966x *lan966x);
 void lan966x_fdma_deinit(struct lan966x *lan966x);
 irqreturn_t lan966x_fdma_irq_handler(int irq, void *args);
 
+int lan966x_lag_port_join(struct lan966x_port *port,
+			  struct net_device *brport_dev,
+			  struct net_device *bond,
+			  struct netlink_ext_ack *extack);
+void lan966x_lag_port_leave(struct lan966x_port *port, struct net_device *bond);
+int lan966x_lag_port_prechangeupper(struct net_device *dev,
+				    struct netdev_notifier_changeupper_info *info);
+int lan966x_lag_port_changelowerstate(struct net_device *dev,
+				      struct netdev_notifier_changelowerstate_info *info);
+int lan966x_lag_netdev_prechangeupper(struct net_device *dev,
+				      struct netdev_notifier_changeupper_info *info);
+int lan966x_lag_netdev_changeupper(struct net_device *dev,
+				   struct netdev_notifier_changeupper_info *info);
+bool lan966x_lag_first_port(struct net_device *lag, struct net_device *dev);
+u32 lan966x_lag_get_mask(struct lan966x *lan966x, struct net_device *bond);
+
+int lan966x_port_changeupper(struct net_device *dev,
+			     struct net_device *brport_dev,
+			     struct netdev_notifier_changeupper_info *info);
+int lan966x_port_prechangeupper(struct net_device *dev,
+				struct net_device *brport_dev,
+				struct netdev_notifier_changeupper_info *info);
+void lan966x_port_stp_state_set(struct lan966x_port *port, u8 state);
+void lan966x_port_ageing_set(struct lan966x_port *port,
+			     unsigned long ageing_clock_t);
+void lan966x_update_fwd_mask(struct lan966x *lan966x);
+
 static inline void __iomem *lan_addr(void __iomem *base[],
 				     int id, int tinst, int tcnt,
 				     int gbase, int ginst,

drivers/net/ethernet/microchip/lan966x/lan966x_regs.h

@@ -363,6 +363,51 @@ enum lan966x_target {
 #define ANA_PFC_CFG_FC_LINK_SPEED_GET(x)\
 	FIELD_GET(ANA_PFC_CFG_FC_LINK_SPEED, x)
 
+/*      ANA:COMMON:AGGR_CFG */
+#define ANA_AGGR_CFG              __REG(TARGET_ANA, 0, 1, 31232, 0, 1, 552, 0, 0, 1, 4)
+
+#define ANA_AGGR_CFG_AC_RND_ENA                  BIT(6)
+#define ANA_AGGR_CFG_AC_RND_ENA_SET(x)\
+	FIELD_PREP(ANA_AGGR_CFG_AC_RND_ENA, x)
+#define ANA_AGGR_CFG_AC_RND_ENA_GET(x)\
+	FIELD_GET(ANA_AGGR_CFG_AC_RND_ENA, x)
+
+#define ANA_AGGR_CFG_AC_DMAC_ENA                 BIT(5)
+#define ANA_AGGR_CFG_AC_DMAC_ENA_SET(x)\
+	FIELD_PREP(ANA_AGGR_CFG_AC_DMAC_ENA, x)
+#define ANA_AGGR_CFG_AC_DMAC_ENA_GET(x)\
+	FIELD_GET(ANA_AGGR_CFG_AC_DMAC_ENA, x)
+
+#define ANA_AGGR_CFG_AC_SMAC_ENA                 BIT(4)
+#define ANA_AGGR_CFG_AC_SMAC_ENA_SET(x)\
+	FIELD_PREP(ANA_AGGR_CFG_AC_SMAC_ENA, x)
+#define ANA_AGGR_CFG_AC_SMAC_ENA_GET(x)\
+	FIELD_GET(ANA_AGGR_CFG_AC_SMAC_ENA, x)
+
+#define ANA_AGGR_CFG_AC_IP6_FLOW_LBL_ENA         BIT(3)
+#define ANA_AGGR_CFG_AC_IP6_FLOW_LBL_ENA_SET(x)\
+	FIELD_PREP(ANA_AGGR_CFG_AC_IP6_FLOW_LBL_ENA, x)
+#define ANA_AGGR_CFG_AC_IP6_FLOW_LBL_ENA_GET(x)\
+	FIELD_GET(ANA_AGGR_CFG_AC_IP6_FLOW_LBL_ENA, x)
+
+#define ANA_AGGR_CFG_AC_IP6_TCPUDP_ENA           BIT(2)
+#define ANA_AGGR_CFG_AC_IP6_TCPUDP_ENA_SET(x)\
+	FIELD_PREP(ANA_AGGR_CFG_AC_IP6_TCPUDP_ENA, x)
+#define ANA_AGGR_CFG_AC_IP6_TCPUDP_ENA_GET(x)\
+	FIELD_GET(ANA_AGGR_CFG_AC_IP6_TCPUDP_ENA, x)
+
+#define ANA_AGGR_CFG_AC_IP4_SIPDIP_ENA           BIT(1)
+#define ANA_AGGR_CFG_AC_IP4_SIPDIP_ENA_SET(x)\
+	FIELD_PREP(ANA_AGGR_CFG_AC_IP4_SIPDIP_ENA, x)
+#define ANA_AGGR_CFG_AC_IP4_SIPDIP_ENA_GET(x)\
+	FIELD_GET(ANA_AGGR_CFG_AC_IP4_SIPDIP_ENA, x)
+
+#define ANA_AGGR_CFG_AC_IP4_TCPUDP_ENA           BIT(0)
+#define ANA_AGGR_CFG_AC_IP4_TCPUDP_ENA_SET(x)\
+	FIELD_PREP(ANA_AGGR_CFG_AC_IP4_TCPUDP_ENA, x)
+#define ANA_AGGR_CFG_AC_IP4_TCPUDP_ENA_GET(x)\
+	FIELD_GET(ANA_AGGR_CFG_AC_IP4_TCPUDP_ENA, x)
+
 /*      CHIP_TOP:CUPHY_CFG:CUPHY_PORT_CFG */
 #define CHIP_TOP_CUPHY_PORT_CFG(r) __REG(TARGET_CHIP_TOP, 0, 1, 16, 0, 1, 20, 8, r, 2, 4)
 

drivers/net/ethernet/microchip/lan966x/lan966x_switchdev.c

@@ -6,8 +6,6 @@
 #include "lan966x_main.h"
 
 static struct notifier_block lan966x_netdevice_nb __read_mostly;
-static struct notifier_block lan966x_switchdev_nb __read_mostly;
-static struct notifier_block lan966x_switchdev_blocking_nb __read_mostly;
 
 static void lan966x_port_set_mcast_ip_flood(struct lan966x_port *port,
 					    u32 pgid_ip)
@@ -132,7 +130,7 @@ static int lan966x_port_pre_bridge_flags(struct lan966x_port *port,
 	return 0;
 }
 
-static void lan966x_update_fwd_mask(struct lan966x *lan966x)
+void lan966x_update_fwd_mask(struct lan966x *lan966x)
 {
 	int i;
 
@@ -140,9 +138,14 @@ static void lan966x_update_fwd_mask(struct lan966x *lan966x)
 		struct lan966x_port *port = lan966x->ports[i];
 		unsigned long mask = 0;
 
-		if (port && lan966x->bridge_fwd_mask & BIT(i))
+		if (port && lan966x->bridge_fwd_mask & BIT(i)) {
 			mask = lan966x->bridge_fwd_mask & ~BIT(i);
 
+			if (port->bond)
+				mask &= ~lan966x_lag_get_mask(lan966x,
+							      port->bond);
+		}
+
 		mask |= BIT(CPU_PORT);
 
 		lan_wr(ANA_PGID_PGID_SET(mask),
@@ -150,7 +153,7 @@ static void lan966x_update_fwd_mask(struct lan966x *lan966x)
 	}
 }
 
-static void lan966x_port_stp_state_set(struct lan966x_port *port, u8 state)
+void lan966x_port_stp_state_set(struct lan966x_port *port, u8 state)
 {
 	struct lan966x *lan966x = port->lan966x;
 	bool learn_ena = false;
@@ -171,8 +174,8 @@ static void lan966x_port_stp_state_set(struct lan966x_port *port, u8 state)
 	lan966x_update_fwd_mask(lan966x);
 }
 
-static void lan966x_port_ageing_set(struct lan966x_port *port,
-				    unsigned long ageing_clock_t)
+void lan966x_port_ageing_set(struct lan966x_port *port,
+			     unsigned long ageing_clock_t)
 {
 	unsigned long ageing_jiffies = clock_t_to_jiffies(ageing_clock_t);
 	u32 ageing_time = jiffies_to_msecs(ageing_jiffies) / 1000;
@@ -241,6 +244,7 @@ static int lan966x_port_attr_set(struct net_device *dev, const void *ctx,
 }
 
 static int lan966x_port_bridge_join(struct lan966x_port *port,
+				    struct net_device *brport_dev,
 				    struct net_device *bridge,
 				    struct netlink_ext_ack *extack)
 {
@@ -258,7 +262,7 @@ static int lan966x_port_bridge_join(struct lan966x_port *port,
 		}
 	}
 
-	err = switchdev_bridge_port_offload(dev, dev, port,
+	err = switchdev_bridge_port_offload(brport_dev, dev, port,
 					    &lan966x_switchdev_nb,
 					    &lan966x_switchdev_blocking_nb,
 					    false, extack);
@@ -295,8 +299,9 @@ static void lan966x_port_bridge_leave(struct lan966x_port *port,
 	lan966x_vlan_port_apply(port);
 }
 
-static int lan966x_port_changeupper(struct net_device *dev,
-				    struct netdev_notifier_changeupper_info *info)
+int lan966x_port_changeupper(struct net_device *dev,
+			     struct net_device *brport_dev,
+			     struct netdev_notifier_changeupper_info *info)
 {
 	struct lan966x_port *port = netdev_priv(dev);
 	struct netlink_ext_ack *extack;
@@ -306,44 +311,68 @@ static int lan966x_port_changeupper(struct net_device *dev,
 
 	if (netif_is_bridge_master(info->upper_dev)) {
 		if (info->linking)
-			err = lan966x_port_bridge_join(port, info->upper_dev,
+			err = lan966x_port_bridge_join(port, brport_dev,
+						       info->upper_dev,
 						       extack);
 		else
 			lan966x_port_bridge_leave(port, info->upper_dev);
 	}
 
+	if (netif_is_lag_master(info->upper_dev)) {
+		if (info->linking)
+			err = lan966x_lag_port_join(port, info->upper_dev,
+						    info->upper_dev,
+						    extack);
+		else
+			lan966x_lag_port_leave(port, info->upper_dev);
+	}
+
 	return err;
 }
 
-static int lan966x_port_prechangeupper(struct net_device *dev,
-				       struct netdev_notifier_changeupper_info *info)
+int lan966x_port_prechangeupper(struct net_device *dev,
+				struct net_device *brport_dev,
+				struct netdev_notifier_changeupper_info *info)
 {
 	struct lan966x_port *port = netdev_priv(dev);
+	int err = NOTIFY_DONE;
 
-	if (netif_is_bridge_master(info->upper_dev) && !info->linking)
-		switchdev_bridge_port_unoffload(port->dev, port,
-						NULL, NULL);
+	if (netif_is_bridge_master(info->upper_dev) && !info->linking) {
+		switchdev_bridge_port_unoffload(port->dev, port, NULL, NULL);
+		lan966x_fdb_flush_workqueue(port->lan966x);
+	}
 
-	return NOTIFY_DONE;
+	if (netif_is_lag_master(info->upper_dev)) {
+		err = lan966x_lag_port_prechangeupper(dev, info);
+		if (err || info->linking)
+			return err;
+
+		switchdev_bridge_port_unoffload(brport_dev, port, NULL, NULL);
+		lan966x_fdb_flush_workqueue(port->lan966x);
+	}
+
+	return err;
 }
 
-static int lan966x_foreign_bridging_check(struct net_device *bridge,
+static int lan966x_foreign_bridging_check(struct net_device *upper,
+					  bool *has_foreign,
+					  bool *seen_lan966x,
 					  struct netlink_ext_ack *extack)
 {
 	struct lan966x *lan966x = NULL;
-	bool has_foreign = false;
 	struct net_device *dev;
 	struct list_head *iter;
 
-	if (!netif_is_bridge_master(bridge))
+	if (!netif_is_bridge_master(upper) &&
+	    !netif_is_lag_master(upper))
 		return 0;
 
-	netdev_for_each_lower_dev(bridge, dev, iter) {
+	netdev_for_each_lower_dev(upper, dev, iter) {
 		if (lan966x_netdevice_check(dev)) {
 			struct lan966x_port *port = netdev_priv(dev);
 
 			if (lan966x) {
-				/* Bridge already has at least one port of a
+				/* Upper already has at least one port of a
 				 * lan966x switch inside it, check that it's
 				 * the same instance of the driver.
 				 */
@@ -354,15 +383,24 @@ static int lan966x_foreign_bridging_check(struct net_device *bridge,
 				}
 			} else {
 				/* This is the first lan966x port inside this
-				 * bridge
+				 * upper device
 				 */
 				lan966x = port->lan966x;
+				*seen_lan966x = true;
 			}
+		} else if (netif_is_lag_master(dev)) {
+			/* Allow to have bond interfaces that have only lan966x
+			 * devices
+			 */
+			if (lan966x_foreign_bridging_check(dev, has_foreign,
+							   seen_lan966x,
+							   extack))
+				return -EINVAL;
 		} else {
-			has_foreign = true;
+			*has_foreign = true;
 		}
 
-		if (lan966x && has_foreign) {
+		if (*seen_lan966x && *has_foreign) {
 			NL_SET_ERR_MSG_MOD(extack,
 					   "Bridging lan966x ports with foreign interfaces disallowed");
 			return -EINVAL;
@@ -375,7 +413,12 @@ static int lan966x_foreign_bridging_check(struct net_device *bridge,
 static int lan966x_bridge_check(struct net_device *dev,
 				struct netdev_notifier_changeupper_info *info)
 {
+	bool has_foreign = false;
+	bool seen_lan966x = false;
+
 	return lan966x_foreign_bridging_check(info->upper_dev,
+					      &has_foreign,
+					      &seen_lan966x,
 					      info->info.extack);
 }
 
@@ -386,21 +429,44 @@ static int lan966x_netdevice_port_event(struct net_device *dev,
 	int err = 0;
 
 	if (!lan966x_netdevice_check(dev)) {
-		if (event == NETDEV_CHANGEUPPER)
-			return lan966x_bridge_check(dev, ptr);
+		switch (event) {
+		case NETDEV_CHANGEUPPER:
+		case NETDEV_PRECHANGEUPPER:
+			err = lan966x_bridge_check(dev, ptr);
+			if (err)
+				return err;
+
+			if (netif_is_lag_master(dev)) {
+				if (event == NETDEV_CHANGEUPPER)
+					err = lan966x_lag_netdev_changeupper(dev,
+									     ptr);
+				else
+					err = lan966x_lag_netdev_prechangeupper(dev,
+										ptr);
+
+				return err;
+			}
+			break;
+		default:
+			return 0;
+		}
+
 		return 0;
 	}
 
 	switch (event) {
 	case NETDEV_PRECHANGEUPPER:
-		err = lan966x_port_prechangeupper(dev, ptr);
+		err = lan966x_port_prechangeupper(dev, dev, ptr);
 		break;
 	case NETDEV_CHANGEUPPER:
 		err = lan966x_bridge_check(dev, ptr);
 		if (err)
 			return err;
 
-		err = lan966x_port_changeupper(dev, ptr);
+		err = lan966x_port_changeupper(dev, dev, ptr);
+		break;
+	case NETDEV_CHANGELOWERSTATE:
+		err = lan966x_lag_port_changelowerstate(dev, ptr);
 		break;
 	}
 
@@ -418,19 +484,23 @@ static int lan966x_netdevice_event(struct notifier_block *nb,
 	return notifier_from_errno(ret);
 }
 
-/* We don't offload uppers such as LAG as bridge ports, so every device except
- * the bridge itself is foreign.
- */
 static bool lan966x_foreign_dev_check(const struct net_device *dev,
 				      const struct net_device *foreign_dev)
 {
 	struct lan966x_port *port = netdev_priv(dev);
 	struct lan966x *lan966x = port->lan966x;
+	int i;
 
 	if (netif_is_bridge_master(foreign_dev))
 		if (lan966x->bridge == foreign_dev)
 			return false;
 
+	if (netif_is_lag_master(foreign_dev))
+		for (i = 0; i < lan966x->num_phys_ports; ++i)
+			if (lan966x->ports[i] &&
+			    lan966x->ports[i]->bond == foreign_dev)
+				return false;
+
 	return true;
 }
 
@@ -571,11 +641,11 @@ static struct notifier_block lan966x_netdevice_nb __read_mostly = {
 	.notifier_call = lan966x_netdevice_event,
 };
 
-static struct notifier_block lan966x_switchdev_nb __read_mostly = {
+struct notifier_block lan966x_switchdev_nb __read_mostly = {
 	.notifier_call = lan966x_switchdev_event,
 };
 
-static struct notifier_block lan966x_switchdev_blocking_nb __read_mostly = {
+struct notifier_block lan966x_switchdev_blocking_nb __read_mostly = {
 	.notifier_call = lan966x_switchdev_blocking_event,
 };