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

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