netifd: Reload proto on topology change

Introduce a new device event "topology change" that gets signaled
by bridges on adding/removing members.

On "topology changes" the proto handlers are requested to "renew"
which is most useful for DHCP.

Signed-off-by: Helmut Schaa <helmut.schaa@googlemail.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/vlan.c b/vlan.c
index 9201979..28e561b 100644
--- a/vlan.c
+++ b/vlan.c
@@ -88,6 +88,10 @@ static void vlan_dev_cb(struct device_user *dep, enum device_event ev)
 		vlan_dev_set_name(vldev, dep->dev);
 		device_broadcast_event(&vldev->dev, ev);
 		break;
+	case DEV_EVENT_TOPO_CHANGE:
+		/* Propagate topo changes */
+		device_broadcast_event(&vldev->dev, DEV_EVENT_TOPO_CHANGE);
+		break;
 	default:
 		break;
 	}