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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
@@ -1677,6 +1677,8 @@ 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 {
@@ -1688,6 +1690,12 @@ 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);
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