net: dsa: mv88e6xxx: override existent unicast portvec in port_fdb_add
Having multiple destination ports for a unicast address does not make
sense.
Make port_db_load_purge override existent unicast portvec instead of
adding a new port bit.
Fixes: 884729399260 ("net: dsa: mv88e6xxx: handle multiple ports in ATU")
Signed-off-by: DENG Qingfang <dqfext@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Link: https://lore.kernel.org/r/20210130134334.10243-1-dqfext@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index eafe6be..54aa942 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -1676,7 +1676,11 @@ static int mv88e6xxx_port_db_load_purge(struct mv88e6xxx_chip *chip, int port,
if (!entry.portvec)
entry.state = 0;
} else {
- entry.portvec |= BIT(port);
+ if (state == MV88E6XXX_G1_ATU_DATA_STATE_UC_STATIC)
+ entry.portvec = BIT(port);
+ else
+ entry.portvec |= BIT(port);
+
entry.state = state;
}