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SubjectRe: [PATCH 3/4] net: dsa: mv88e6xxx: Implement .port_change_mtu/.port_max_mtu
On Thu, Jul 23, 2020 at 03:59:41PM +1200, Chris Packham wrote:
> Add implementations for the mv88e6xxx switches to connect with the
> generic dsa operations for configuring the port MTU.

Hi Chris

What tree is this against?

commit 2a550aec36543b20f087e4b3063882e9465f7175
Author: Andrew Lunn <andrew@lunn.ch>
Date: Sat Jul 11 22:32:05 2020 +0200

net: dsa: mv88e6xxx: Implement MTU change

The Marvell Switches support jumbo packages. So implement the
callbacks needed for changing the MTU.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index d995f5bf0d40..6f019955ae42 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -2693,6 +2693,31 @@ static int mv88e6xxx_setup_port(struct mv88e6xxx_chip *chip, int port)
return mv88e6xxx_port_write(chip, port, MV88E6XXX_PORT_DEFAULT_VLAN, 0);
}

+static int mv88e6xxx_get_max_mtu(struct dsa_switch *ds, int port)
+{
+ struct mv88e6xxx_chip *chip = ds->priv;
+
+ if (chip->info->ops->port_set_jumbo_size)
+ return 10240;
+ return 1522;
+}
+
+static int mv88e6xxx_change_mtu(struct dsa_switch *ds, int port, int new_mtu)
+{
...
Andrew

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