diff mbox series

[4.14,30/30] net: dsa: mv88e6xxx: override existent unicast portvec in port_fdb_add

Message ID 20210208145806.449755046@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg KH Feb. 8, 2021, 3:01 p.m. UTC 
From: DENG Qingfang <dqfext@gmail.com>

commit f72f2fb8fb6be095b98af5d740ac50cffd0b0cae upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/net/dsa/mv88e6xxx/chip.c |    6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)
diff mbox series

Patch

--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -1364,7 +1364,11 @@  static int mv88e6xxx_port_db_load_purge(
 		if (!entry.portvec)
 			entry.state = MV88E6XXX_G1_ATU_DATA_STATE_UNUSED;
 	} 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;
 	}