On 2023-01-31 19:54, Simon Horman wrote:

quoted

--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c

@@ -1684,11 +1684,15 @@ static int b53_arl_op(struct b53_device *dev, 

int op, int port,

 int b53_fdb_add(struct dsa_switch *ds, int port,
 		const unsigned char *addr, u16 vid,
-		struct dsa_db db)
+		u16 fdb_flags, struct dsa_db db)
 {
 	struct b53_device *priv = ds->priv;
 	int ret;

+	/* Ignore entries with set flags */
+	if (fdb_flags)
+		return 0;

	Would returning -EOPNOTSUPP be more appropriate?

...

I don't think that would be so good, as the command

bridge fdb replace ADDR dev <DEV> master dynamic

is a valid command and should not generate errors. When ignored by the 
driver, it will just install a dynamic FDB entry in the bridge, and the 
bridge will age it.