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Message-ID: <20200723133122.GB1553578@lunn.ch>
Date:   Thu, 23 Jul 2020 15:31:22 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Chris Packham <chris.packham@...iedtelesis.co.nz>
Cc:     vivien.didelot@...il.com, f.fainelli@...il.com,
        davem@...emloft.net, kuba@...nel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [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@...n.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@...n.ch>
    Signed-off-by: David S. Miller <davem@...emloft.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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