[PATCH net-next 11/16] net: dsa: Handle SWITCHDEV_PORT_ATTR_SET

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Following patches will change the way we communicate getting or setting
a port's attribute and use a blocking notifier to perform those tasks.

Prepare DSA to support receiving notifier events targeting
SWITCHDEV_PORT_ATTR_SET and simply translate that into the existing
dsa_slave_port_attr_set() call.

Signed-off-by: Florian Fainelli <f.fainelli@xxxxxxxxx>
---
 net/dsa/slave.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index ae34be949d79..f8c7c1b2cd2f 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -1544,6 +1544,24 @@ dsa_slave_switchdev_port_obj_event(unsigned long event,
 	return notifier_from_errno(err);
 }
 
+static int
+dsa_slave_switchdev_port_attr_event(unsigned long event,
+		struct net_device *netdev,
+		struct switchdev_notifier_port_attr_info *port_attr_info)
+{
+	int err = -EOPNOTSUPP;
+
+	switch (event) {
+	case SWITCHDEV_PORT_ATTR_SET:
+		err = dsa_slave_port_attr_set(netdev, port_attr_info->attr,
+					      port_attr_info->trans);
+		break;
+	}
+
+	port_attr_info->handled = true;
+	return notifier_from_errno(err);
+}
+
 static int dsa_slave_switchdev_blocking_event(struct notifier_block *unused,
 					      unsigned long event, void *ptr)
 {
@@ -1556,6 +1574,8 @@ static int dsa_slave_switchdev_blocking_event(struct notifier_block *unused,
 	case SWITCHDEV_PORT_OBJ_ADD: /* fall through */
 	case SWITCHDEV_PORT_OBJ_DEL:
 		return dsa_slave_switchdev_port_obj_event(event, dev, ptr);
+	case SWITCHDEV_PORT_ATTR_SET: /* fallthrough */
+		return dsa_slave_switchdev_port_attr_event(event, dev, ptr);
 	}
 
 	return NOTIFY_DONE;
-- 
2.17.1

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