[PATCH net-next 2/3] net: dsa: mv88e6xxx: add support for bridge flags

[Russell King <rmk+kernel@armlinux.org.uk>]

Add support for the bridge flags to Marvell 88e6xxx bridges, allowing
the multicast and unicast flood properties to be controlled.  These
can be controlled on a per-port basis via commands such as:

	bridge link set dev lan1 flood on|off
	bridge link set dev lan1 mcast_flood on|off

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
---
 drivers/net/dsa/mv88e6xxx/chip.c | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)

diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
index 32e7af5caa69..b75a865a293d 100644
--- a/drivers/net/dsa/mv88e6xxx/chip.c
+++ b/drivers/net/dsa/mv88e6xxx/chip.c
@@ -4692,6 +4692,37 @@ static int mv88e6xxx_port_mdb_del(struct dsa_switch *ds, int port,
 	return err;
 }
 
+static int mv88e6xxx_port_bridge_flags(struct dsa_switch *ds, int port,
+				       unsigned long flags)
+{
+	struct mv88e6xxx_chip *chip = ds->priv;
+	bool unicast, multicast;
+	int ret = -EOPNOTSUPP;
+
+	unicast = dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port) ||
+		flags & BR_FLOOD;
+	multicast = flags & BR_MCAST_FLOOD;
+
+	mutex_lock(&chip->reg_lock);
+	if (chip->info->ops->port_set_egress_floods)
+		ret = chip->info->ops->port_set_egress_floods(chip, port,
+							      unicast,
+							      multicast);
+	mutex_unlock(&chip->reg_lock);
+
+	return ret;
+}
+
+static unsigned long mv88e6xxx_bridge_flags_support(struct dsa_switch *ds)
+{
+	unsigned long support = 0;
+
+	if (chip->info->ops->port_set_egress_floods)
+		support |= BR_FLOOD | BR_MCAST_FLOOD;
+
+	return support;
+}
+
 static const struct dsa_switch_ops mv88e6xxx_switch_ops = {
 #if IS_ENABLED(CONFIG_NET_DSA_LEGACY)
 	.probe			= mv88e6xxx_drv_probe,
@@ -4719,6 +4750,8 @@ static const struct dsa_switch_ops mv88e6xxx_switch_ops = {
 	.set_ageing_time	= mv88e6xxx_set_ageing_time,
 	.port_bridge_join	= mv88e6xxx_port_bridge_join,
 	.port_bridge_leave	= mv88e6xxx_port_bridge_leave,
+	.port_bridge_flags	= mv88e6xxx_port_bridge_flags,
+	.bridge_flags_support	= mv88e6xxx_bridge_flags_support,
 	.port_stp_state_set	= mv88e6xxx_port_stp_state_set,
 	.port_fast_age		= mv88e6xxx_port_fast_age,
 	.port_vlan_filtering	= mv88e6xxx_port_vlan_filtering,
-- 
2.7.4