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authorMurali Krishna Policharla <murali.policharla@broadcom.com>2020-03-27 22:55:44 +0300
committerDavid S. Miller <davem@davemloft.net>2020-03-28 02:07:25 +0300
commit6ae5834b983ac191ce2a66fbdc59bb33477a63cc (patch)
treeaf0e6d6680243b1aa10c9c29e7bf6d65f0dac617 /drivers/net/dsa/b53
parentbff33f7e2ae2e805a4b0af597b58422185c68900 (diff)
downloadlinux-6ae5834b983ac191ce2a66fbdc59bb33477a63cc.tar.xz
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.c27
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 {