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net: dsa: mv88e6xxx: override existent unicast portvec in port_fdb_add

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commit f72f2fb8fb 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: 8847293992 ("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>
This commit is contained in:
DENG Qingfang 2021-01-30 21:43:34 +08:00 committed by Greg Kroah-Hartman
parent 43cc1495ec
commit 6e0e334c03
1 changed files with 5 additions and 1 deletions
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6
drivers/net/dsa/mv88e6xxx/chip.c
View file

@ -1364,7 +1364,11 @@ static int mv88e6xxx_port_db_load_purge(struct mv88e6xxx_chip *chip, int port,
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;
}