diff options
| author |   Murali Krishna Policharla <murali.policharla@broadcom.com> | 2020-03-27 21:55:44 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2020-03-27 16:07:25 -0700 |
| commit | 6ae5834b983ac191ce2a66fbdc59bb33477a63cc (patch) | |
| tree | af0e6d6680243b1aa10c9c29e7bf6d65f0dac617 /drivers/net/dsa/b53 | |
| parent | net: dsa: implement auto-normalization of MTU for bridge hardware datapath (diff) | |
| download | wireguard-linux-6ae5834b983ac191ce2a66fbdc59bb33477a63cc.tar.xz wireguard-linux-6ae5834b983ac191ce2a66fbdc59bb33477a63cc.zip | |
net: dsa: b53: add MTU configuration support
It looks like the Broadcom switches supported by the b53 driver don't
support precise configuration of the MTU, but just a mumbo-jumbo boolean
flag. Set that.
Also configure BCM583XX devices to send and receive jumbo frames when
ports are configured with 10/100 Mbps speed.
Signed-off-by: Murali Krishna Policharla <murali.policharla@broadcom.com>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/dsa/b53')
| -rw-r--r-- | drivers/net/dsa/b53/b53_common.c | 27 |
1 files changed, 22 insertions, 5 deletions
diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c index ceafce446317..39ae4ed87d1d 100644 --- a/drivers/net/dsa/b53/b53_common.c +++ b/drivers/net/dsa/b53/b53_common.c @@ -699,9 +699,6 @@ int b53_configure_vlan(struct dsa_switch *ds) b53_write16(dev, B53_VLAN_PAGE, B53_VLAN_PORT_DEF_TAG(i), def_vid); - if (!is5325(dev) && !is5365(dev)) - b53_set_jumbo(dev, dev->enable_jumbo, false); - return 0; } EXPORT_SYMBOL(b53_configure_vlan); @@ -807,8 +804,6 @@ static int b53_phy_write16(struct dsa_switch *ds, int addr, int reg, u16 val) static int b53_reset_switch(struct b53_device *priv) { /* reset vlans */ - priv->enable_jumbo = false; - memset(priv->vlans, 0, sizeof(*priv->vlans) * priv->num_vlans); memset(priv->ports, 0, sizeof(*priv->ports) * priv->num_ports); @@ -2065,6 +2060,26 @@ int b53_set_mac_eee(struct dsa_switch *ds, int port, struct ethtool_eee *e) } EXPORT_SYMBOL(b53_set_mac_eee); +static int b53_change_mtu(struct dsa_switch *ds, int port, int mtu) +{ + struct b53_device *dev = ds->priv; + bool enable_jumbo; + bool allow_10_100; + + if (is5325(dev) || is5365(dev)) + return -EOPNOTSUPP; + + enable_jumbo = (mtu >= JMS_MIN_SIZE); + allow_10_100 = (dev->chip_id == BCM583XX_DEVICE_ID); + + return b53_set_jumbo(dev, enable_jumbo, allow_10_100); +} + +static int b53_get_max_mtu(struct dsa_switch *ds, int port) +{ + return JMS_MAX_SIZE; +} + static const struct dsa_switch_ops b53_switch_ops = { .get_tag_protocol = b53_get_tag_protocol, .setup = b53_setup, @@ -2102,6 +2117,8 @@ static const struct dsa_switch_ops b53_switch_ops = { .port_mdb_prepare = b53_mdb_prepare, .port_mdb_add = b53_mdb_add, .port_mdb_del = b53_mdb_del, + .port_max_mtu = b53_get_max_mtu, + .port_change_mtu = b53_change_mtu, }; struct b53_chip_data { |