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From: DENG Qingfang <dqfext@gmail.com>
To: Andrew Lunn <andrew@lunn.ch>,
	Vivien Didelot <vivien.didelot@gmail.com>,
	Florian Fainelli <f.fainelli@gmail.com>,
	Vladimir Oltean <olteanv@gmail.com>,
	"David S. Miller" <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>,
	netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Tobias Waldekranz <tobias@waldekranz.com>
Subject: [PATCH net] net: dsa: mv88e6xxx: override existent unicast portvec in port_fdb_add
Date: Sat, 30 Jan 2021 21:43:34 +0800	[thread overview]
Message-ID: <20210130134334.10243-1-dqfext@gmail.com> (raw)

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>
---
 drivers/net/dsa/mv88e6xxx/chip.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index b99f27b8c084..ae0b490f00cd 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -1686,7 +1686,11 @@ 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;
 	}
 
-- 
2.25.1

             reply	other threads:[~2021-01-30 13:44 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-30 13:43 DENG Qingfang [this message]
2021-01-30 20:47 ` [PATCH net] net: dsa: mv88e6xxx: override existent unicast portvec in port_fdb_add Tobias Waldekranz
2021-01-31  0:33   ` Vladimir Oltean
2021-01-31  0:39 ` Vladimir Oltean
2021-01-31  1:13   ` DENG Qingfang
2021-01-31 22:20     ` Vladimir Oltean
2021-02-02  7:39     ` Tobias Waldekranz
2021-02-02  2:30 ` patchwork-bot+netdevbpf

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