netdev - [RFC net-next 7/7] net: dsa: mv88e6xxx: Request assisted learning on CPU port

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Date:   Sat, 16 Jan 2021 02:25:15 +0100
From:   Tobias Waldekranz <tobias@...dekranz.com>
To:     davem@...emloft.net, kuba@...nel.org
Cc:     andrew@...n.ch, vivien.didelot@...il.com, f.fainelli@...il.com,
        olteanv@...il.com, roopa@...dia.com, nikolay@...dia.com,
        netdev@...r.kernel.org
Subject: [RFC net-next 7/7] net: dsa: mv88e6xxx: Request assisted learning on CPU port

While the hardware is capable of performing learning on the CPU port,
it requires alot of additions to the bridge's forwarding path in order
to handle multi-destination traffic correctly.

Until that is in place, opt for the next best thing and let DSA sync
the relevant addresses down to the hardware FDB.

Signed-off-by: Tobias Waldekranz <tobias@...dekranz.com>
---
 drivers/net/dsa/mv88e6xxx/chip.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index 91286d7b12c7..398f3cc8d2f3 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -5726,6 +5726,7 @@ static int mv88e6xxx_register_switch(struct mv88e6xxx_chip *chip)
 	ds->ops = &mv88e6xxx_switch_ops;
 	ds->ageing_time_min = chip->info->age_time_coeff;
 	ds->ageing_time_max = chip->info->age_time_coeff * U8_MAX;
+	ds->assisted_learning_on_cpu_port = true;
 
 	/* Some chips support up to 32, but that requires enabling the
 	 * 5-bit port mode, which we do not support. 640k^W16 ought to
-- 
2.17.1