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net: dsa: mv88e6xxx: Implement MTU change

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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>
This commit is contained in:
Andrew Lunn 2020-07-11 22:32:05 +02:00 committed by David S. Miller
parent 9433944368
commit 2a550aec36
1 changed files with 27 additions and 0 deletions
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27
drivers/net/dsa/mv88e6xxx/chip.c
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@ -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,