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.faine...@gmail.com>
---
 net/dsa/slave.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index d8eb33979368..ee4b94c5e68e 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -1547,6 +1547,20 @@ dsa_slave_switchdev_port_obj_event(unsigned long event,
        return notifier_from_errno(err);
 }
 
+static int
+dsa_slave_switchdev_port_attr_set_event(unsigned long event,
+               struct net_device *netdev,
+               struct switchdev_notifier_port_attr_info *port_attr_info)
+{
+       int err;
+
+       err = dsa_slave_port_attr_set(netdev, port_attr_info->attr,
+                                     port_attr_info->trans);
+
+       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)
 {
@@ -1559,6 +1573,8 @@ 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:
+               return dsa_slave_switchdev_port_attr_set_event(event, dev, ptr);
        }
 
        return NOTIFY_DONE;
-- 
2.19.1

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