Subject: [PATCH v2 net-next 4/6] net: bridge: ensure FDB offloaded flag is handled as needed

From: "Hans J. Schultz" <[email-masked]>
Date: Sat, 18 Mar 2023 15:10:08 +0100

Since user added entries in the bridge FDB will get the BR_FDB_OFFLOADED
flag set, we do not want the bridge to age those entries and we want the
entries to be deleted in the bridge upon an SWITCHDEV_FDB_DEL_TO_BRIDGE
event.

Signed-off-by: Hans J. Schultz <[email-masked]>
---
 net/bridge/br_fdb.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
index e69a872bfc1d..b0c23a72bc76 100644
--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -537,6 +537,7 @@ void br_fdb_cleanup(struct work_struct *work)
 		unsigned long this_timer = f->updated + delay;
 
 		if (test_bit(BR_FDB_STATIC, &f->flags) ||
+		    test_bit(BR_FDB_OFFLOADED, &f->flags) ||
 		    test_bit(BR_FDB_ADDED_BY_EXT_LEARN, &f->flags)) {
 			if (test_bit(BR_FDB_NOTIFY, &f->flags)) {
 				if (time_after(this_timer, now))
@@ -1465,7 +1466,9 @@ int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p,
 	spin_lock_bh(&br->hash_lock);
 
 	fdb = br_fdb_find(br, addr, vid);
-	if (fdb && test_bit(BR_FDB_ADDED_BY_EXT_LEARN, &fdb->flags))
+	if (fdb &&
+	    (test_bit(BR_FDB_ADDED_BY_EXT_LEARN, &fdb->flags) ||
+	     test_bit(BR_FDB_OFFLOADED, &fdb->flags)))
 		fdb_delete(br, fdb, swdev_notify);
 	else
 		err = -ENOENT;
-- 
2.34.1