From d9a94c8478156c97f9cca85d824964994a9b54bf Mon Sep 17 00:00:00 2001
From: Daniel Wagner <daniel.wagner@bmw-carit.de>
Date: Wed, 1 Feb 2012 18:51:45 +0100
Subject: [PATCH] tethering: Use notifier to update default interface.

---
 src/connman.h   |  1 -
 src/notifier.c  |  5 -----
 src/tethering.c | 28 +++++++++++++++++++++++++---
 3 files changed, 25 insertions(+), 9 deletions(-)

diff --git a/src/connman.h b/src/connman.h
index ec35afc..0a16fb4 100644
--- a/src/connman.h
+++ b/src/connman.h
@@ -482,7 +482,6 @@ int __connman_tethering_init(void);
 void __connman_tethering_cleanup(void);
 
 const char *__connman_tethering_get_bridge(void);
-void __connman_tethering_update_interface(const char *interface);
 void __connman_tethering_set_enabled(void);
 void __connman_tethering_set_disabled(void);
 
diff --git a/src/notifier.c b/src/notifier.c
index 91b52ea..dedea95 100644
--- a/src/notifier.c
+++ b/src/notifier.c
@@ -197,15 +197,10 @@ static void technology_default(enum connman_service_type type)
 void __connman_notifier_default_changed(struct connman_service *service)
 {
 	enum connman_service_type type = connman_service_get_type(service);
-	char *interface;
 	GSList *list;
 
 	technology_default(type);
 
-	interface = connman_service_get_interface(service);
-	__connman_tethering_update_interface(interface);
-	g_free(interface);
-
 	for (list = notifier_list; list; list = list->next) {
 		struct connman_notifier *notifier = list->data;
 
diff --git a/src/tethering.c b/src/tethering.c
index c240302..70c9177 100644
--- a/src/tethering.c
+++ b/src/tethering.c
@@ -319,8 +319,12 @@ void __connman_tethering_set_disabled(void)
 	DBG("tethering stopped");
 }
 
-void __connman_tethering_update_interface(const char *interface)
+static void update_tethering_interface(struct connman_service *service)
 {
+	char *interface;
+
+	interface = connman_service_get_interface(service);
+
 	DBG("interface %s", interface);
 
 	g_free(default_interface);
@@ -329,16 +333,19 @@ void __connman_tethering_update_interface(const char *interface)
 		disable_nat(interface);
 		default_interface = NULL;
 
-		return;
+		goto out;
 	}
 
 	default_interface = g_strdup(interface);
 
 	__sync_synchronize();
 	if (tethering_enabled == 0)
-		return;
+		goto out;
 
 	enable_nat(interface);
+
+out:
+	g_free(interface);
 }
 
 static void setup_tun_interface(unsigned int flags, unsigned change,
@@ -537,8 +544,15 @@ int __connman_private_network_release(const char *path)
 	return 0;
 }
 
+static struct connman_notifier tethering_notifier = {
+	.name			= "tethering",
+	.default_changed	= update_tethering_interface,
+};
+
 int __connman_tethering_init(void)
 {
+	int err;
+
 	DBG("");
 
 	tethering_enabled = 0;
@@ -547,6 +561,12 @@ int __connman_tethering_init(void)
 	if (connection == NULL)
 		return -EFAULT;
 
+	err = connman_notifier_register(&tethering_notifier);
+	if (err < 0) {
+		dbus_connection_unref(connection);
+		return err;
+	}
+
 	pn_hash = g_hash_table_new_full(g_str_hash, g_str_equal,
 						NULL, remove_private_network);
 
@@ -565,6 +585,8 @@ void __connman_tethering_cleanup(void)
 		__connman_bridge_remove(BRIDGE_NAME);
 	}
 
+	connman_notifier_unregister(&tethering_notifier);
+
 	if (connection == NULL)
 		return;
 
-- 
2.7.4