Commit 2a550aec authored by Andrew Lunn's avatar Andrew Lunn Committed by David S. Miller
Browse files

net: dsa: mv88e6xxx: Implement MTU change 



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

Signed-off-by: default avatarAndrew Lunn <andrew@lunn.ch>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 94339443

drivers/net/dsa/mv88e6xxx/chip.c

+27 −0
Original line number Diff line number Diff line
@@ -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)

{

	struct mv88e6xxx_chip *chip = ds->priv;

	int ret = 0;



	mv88e6xxx_reg_lock(chip);

	if (chip->info->ops->port_set_jumbo_size)

		ret = chip->info->ops->port_set_jumbo_size(chip, port, new_mtu);

	else

		if (new_mtu > 1522)

			ret = -EINVAL;

	mv88e6xxx_reg_unlock(chip);



	return ret;

}



static int mv88e6xxx_port_enable(struct dsa_switch *ds, int port,

				 struct phy_device *phydev)

{
@@ -5525,6 +5550,8 @@ static const struct dsa_switch_ops mv88e6xxx_switch_ops = { 
	.get_sset_count		= mv88e6xxx_get_sset_count,

	.port_enable		= mv88e6xxx_port_enable,

	.port_disable		= mv88e6xxx_port_disable,

	.port_max_mtu		= mv88e6xxx_get_max_mtu,

	.port_change_mtu	= mv88e6xxx_change_mtu,

	.get_mac_eee		= mv88e6xxx_get_mac_eee,

	.set_mac_eee		= mv88e6xxx_set_mac_eee,

	.get_eeprom_len		= mv88e6xxx_get_eeprom_len,

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