From dd082716b43a3684b2f473ae5d1e76d1c076d86d Mon Sep 17 00:00:00 2001
From: Tobias Waldekranz <tobias@waldekranz.com>
Date: Sat, 16 Jan 2021 02:25:12 +0100
Subject: [PATCH] net: dsa: Include local addresses in assisted CPU port
 learning

Add local addresses (i.e. the ports' MAC addresses) to the hardware
FDB when assisted CPU port learning is enabled.

NOTE: The bridge's own MAC address is also "local". If that address is
not shared with any port, the bridge's MAC is not be added by this
functionality - but the following commit takes care of that case.

Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
---
 net/dsa/slave.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -1698,10 +1698,12 @@ static int dsa_slave_switchdev_event(str
 		fdb_info = ptr;
 
 		if (dsa_slave_dev_check(dev)) {
-			if (!fdb_info->added_by_user)
-				return NOTIFY_OK;
-
 			dp = dsa_slave_to_port(dev);
+
+			if (fdb_info->local && dp->ds->assisted_learning_on_cpu_port)
+				dp = dp->cpu_dp;
+			else if (!fdb_info->added_by_user)
+				return NOTIFY_OK;
 		} else {
 			/* Snoop addresses learnt on foreign interfaces
 			 * bridged with us, for switches that don't
