staging: fsl-dpaa2/ethsw: notify switchdev of offloaded entry

Notify switchdev in case the FDB entry was successfully offloaded.
This will help users to make the distinction between entries known to
the HW switch and those that are held only on the software bridge.
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Link: https://lore.kernel.org/r/1564416712-16946-3-git-send-email-ioana.ciornei@nxp.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/fsl-dpaa2/ethsw/ethsw.c

@@ -1039,6 +1039,7 @@ static void ethsw_switchdev_event_work(struct work_struct *work)
 		container_of(work, struct ethsw_switchdev_event_work, work);
 	struct net_device *dev = switchdev_work->dev;
 	struct switchdev_notifier_fdb_info *fdb_info;
+	int err;
 
 	rtnl_lock();
 	fdb_info = &switchdev_work->fdb_info;
@@ -1046,9 +1047,16 @@ static void ethsw_switchdev_event_work(struct work_struct *work)
 	switch (switchdev_work->event) {
 	case SWITCHDEV_FDB_ADD_TO_DEVICE:
 		if (is_unicast_ether_addr(fdb_info->addr))
-			ethsw_port_fdb_add_uc(netdev_priv(dev), fdb_info->addr);
+			err = ethsw_port_fdb_add_uc(netdev_priv(dev),
+						    fdb_info->addr);
 		else
-			ethsw_port_fdb_add_mc(netdev_priv(dev), fdb_info->addr);
+			err = ethsw_port_fdb_add_mc(netdev_priv(dev),
+						    fdb_info->addr);
+		if (err)
+			break;
+		fdb_info->offloaded = true;
+		call_switchdev_notifiers(SWITCHDEV_FDB_OFFLOADED, dev,
+					 &fdb_info->info, NULL);
 		break;
 	case SWITCHDEV_FDB_DEL_TO_DEVICE:
 		if (is_unicast_ether_addr(fdb_info->addr))