preserve interface main hotplug device on reload

2 files changed, 8 insertions, 4 deletions

diff --git a/device.c b/device.c
index 489c660..8f0e823 100644
--- a/device.c
+++ b/device.c
@@ -465,6 +465,9 @@ device_set_disabled(struct device *dev, bool value)
 
 void device_add_user(struct device_user *dep, struct device *dev)
 {
+	if (dep->dev)
+		device_remove_user(dep);
+
 	dep->dev = dev;
 	list_add_tail(&dep->list, &dev->users);
 	if (dep->cb && dev->present) {
diff --git a/interface.c b/interface.c
index 2404878..6e3feeb 100644
--- a/interface.c
+++ b/interface.c
@@ -195,7 +195,7 @@ interface_claim_device(struct interface *iface)
 
 
 static void
-interface_cleanup(struct interface *iface)
+interface_cleanup(struct interface *iface, bool reload)
 {
 	struct interface_user *dep, *tmp;
 
@@ -205,7 +205,8 @@ interface_cleanup(struct interface *iface)
 	interface_ip_flush(&iface->config_ip);
 	interface_flush_state(iface);
 	interface_clear_errors(iface);
-	if (iface->main_dev.dev)
+	if (iface->main_dev.dev &&
+	    (!reload || !iface->main_dev.hotplug))
 		device_remove_user(&iface->main_dev);
 	iface->l3_dev = &iface->main_dev;
 	interface_set_proto_state(iface, NULL);
@@ -214,7 +215,7 @@ interface_cleanup(struct interface *iface)
 static void
 interface_do_free(struct interface *iface)
 {
-	interface_cleanup(iface);
+	interface_cleanup(iface, false);
 	free(iface->config);
 	netifd_ubus_remove_interface(iface);
 	avl_delete(&interfaces.avl, &iface->node.avl);
@@ -224,7 +225,7 @@ interface_do_free(struct interface *iface)
 static void
 interface_do_reload(struct interface *iface)
 {
-	interface_cleanup(iface);
+	interface_cleanup(iface, true);
 	proto_init_interface(iface, iface->config);
 	interface_claim_device(iface);
 }