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-rw-r--r--net/bridge/br_switchdev.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/net/bridge/br_switchdev.c b/net/bridge/br_switchdev.c
index de18e9c1d7a7..ba95c4d74a60 100644
--- a/net/bridge/br_switchdev.c
+++ b/net/bridge/br_switchdev.c
@@ -148,6 +148,17 @@ br_switchdev_fdb_notify(struct net_bridge *br,
if (test_bit(BR_FDB_LOCKED, &fdb->flags))
return;
+ /* Entries with these flags were created using ndm_state == NUD_REACHABLE,
+ * ndm_flags == NTF_MASTER( | NTF_STICKY), ext_flags == 0 by something
+ * equivalent to 'bridge fdb add ... master dynamic (sticky)'.
+ * Drivers don't know how to deal with these, so don't notify them to
+ * avoid confusing them.
+ */
+ if (test_bit(BR_FDB_ADDED_BY_USER, &fdb->flags) &&
+ !test_bit(BR_FDB_STATIC, &fdb->flags) &&
+ !test_bit(BR_FDB_ADDED_BY_EXT_LEARN, &fdb->flags))
+ return;
+
br_switchdev_fdb_populate(br, &item, fdb, NULL);
switch (type) {