1 files changed, 39 insertions, 0 deletions
diff --git a/target/linux/layerscape/patches-5.4/701-net-0394-drivers-net-mscc_ocelot-don-t-flood-unicast-traffic-.patch b/target/linux/layerscape/patches-5.4/701-net-0394-drivers-net-mscc_ocelot-don-t-flood-unicast-traffic-.patch
new file mode 100644
index 0000000000..12a03b0d7b
--- /dev/null
+++ b/target/linux/layerscape/patches-5.4/701-net-0394-drivers-net-mscc_ocelot-don-t-flood-unicast-traffic-.patch
@@ -0,0 +1,39 @@
+From 714e8c634821b340c191a157e8c4e0b1afd53dfc Mon Sep 17 00:00:00 2001
+From: Alex Marginean <alexandru.marginean@nxp.com>
+Date: Wed, 8 Jan 2020 15:21:53 +0200
+Subject: [PATCH] drivers: net: mscc_ocelot: don't flood unicast traffic to cpu
+
+Switch cpu port doesn't learn MAC addresses and the local bridge dev_addr
+must be explicitly added to the bridge.
+This is done whenever a port is added to a bridge, ports following the
+1st one will just overwrite the same entry.
+
+Signed-off-by: Alex Marginean <alexandru.marginean@nxp.com>
+---
+ drivers/net/ethernet/mscc/ocelot.c | 8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+--- a/drivers/net/ethernet/mscc/ocelot.c
++++ b/drivers/net/ethernet/mscc/ocelot.c
+@@ -1680,6 +1680,8 @@ static int ocelot_port_obj_del(struct ne
+ int ocelot_port_bridge_join(struct ocelot *ocelot, int port,
+ 			    struct net_device *bridge)
+ {
++	struct ocelot_port *ocelot_port = ocelot->ports[port];
++
+ 	if (!ocelot->bridge_mask) {
+ 		ocelot->hw_bridge_dev = bridge;
+ 	} else {
+@@ -1691,6 +1693,12 @@ int ocelot_port_bridge_join(struct ocelo
+ 
+ 	ocelot->bridge_mask |= BIT(port);
+ 
++	/* Direct CPU traffic to PCU port, this should override any existing
++	 * entries
++	 */
++	ocelot_mact_learn(ocelot, PGID_CPU, bridge->dev_addr, ocelot_port->pvid,
++			  ENTRYTYPE_LOCKED);
++
+ 	return 0;
+ }
+ EXPORT_SYMBOL(ocelot_port_bridge_join);