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/bridge.c b/bridge.c
index 147fe0a..6baef29 100644
--- a/bridge.c
+++ b/bridge.c
@@ -140,6 +140,8 @@ bridge_disable_member(struct bridge_member *bm)
 	system_bridge_delif(&bst->dev, bm->dev.dev);
 	device_release(&bm->dev);
 
+	device_broadcast_event(&bst->dev, DEV_EVENT_TOPO_CHANGE);
+
 	return 0;
 }
 
@@ -162,6 +164,8 @@ bridge_enable_member(struct bridge_member *bm)
 		goto error;
 	}
 
+	device_broadcast_event(&bst->dev, DEV_EVENT_TOPO_CHANGE);
+
 	return 0;
 
 error: