wifi: Add support for autoscan request
[framework/connectivity/connman.git] / plugins / ofono.c
index 68fbaeb..d9696d7 100644 (file)
@@ -2,7 +2,7 @@
  *
  *  Connection Manager
  *
- *  Copyright (C) 2007-2010  Intel Corporation. All rights reserved.
+ *  Copyright (C) 2007-2012  Intel Corporation. All rights reserved.
  *  Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
  *  Copyright (C) 2011  BWM Car IT GmbH. All rights reserved.
  *
@@ -43,8 +43,6 @@
 
 #include "mcc.h"
 
-#define uninitialized_var(x) x = x
-
 #define OFONO_SERVICE                  "org.ofono"
 
 #define OFONO_MANAGER_INTERFACE                OFONO_SERVICE ".Manager"
@@ -83,13 +81,48 @@ enum ofono_api {
  *   powered -> SubscriberIdentity or Online = True -> gprs, context ->
  *     attached -> netreg -> ready
  *
- * Enabling and disabling modems are steered through the rfkill
- * interface. That means when ConnMan toggles the rfkill bit oFono
- * will add or remove the modems.
+ * Depending on the modem type, this plugin will behave differently.
+ *
+ * GSM working flow:
+ *
+ * When a new modem appears, the plugin always powers it up. This
+ * allows the plugin to create a connman_device. The core will call
+ * modem_enable() if the technology is enabled. modem_enable() will
+ * then set the modem online. If the technology is disabled then
+ * modem_disable() will just set the modem offline. The modem is
+ * always kept powered all the time.
+ *
+ * After setting the modem online the plugin waits for the
+ * ConnectionManager and ConnectionContext to appear. When the context
+ * signals that it is attached and the NetworkRegistration interface
+ * appears, a new Service will be created and registered at the core.
+ *
+ * When asked to connect to the network (network_connect()) the plugin
+ * will set the Active property on the context. If this operation is
+ * successful the modem is connected to the network. oFono will inform
+ * the plugin about IP configuration through the updating the context's
+ * properties.
+ *
+ * CDMA working flow:
  *
- * ConnMan will always power up (set Powered and Online) the
- * modems. No need to power them down because this will be done
- * through the rfkill inteface.
+ * When a new modem appears, the plugin always powers it up. This
+ * allows the plugin to create connman_device either using IMSI either
+ * using modem Serial if the modem got a SIM interface or not.
+ *
+ * As for GSM, the core will call modem_enable() if the technology
+ * is enabled. modem_enable() will then set the modem online.
+ * If the technology is disabled then modem_disable() will just set the
+ * modem offline. The modem is always kept powered all the time.
+ *
+ * After setting the modem online the plugin waits for CdmaConnectionManager
+ * interface to appear. Then, once CdmaNetworkRegistration appears, a new
+ * Service will be created and registered at the core.
+ *
+ * When asked to connect to the network (network_connect()) the plugin
+ * will power up the CdmaConnectionManager interface.
+ * If the operation is successful the modem is connected to the network.
+ * oFono will inform the plugin about IP configuration through the
+ * updating CdmaConnectionManager settings properties.
  */
 
 static DBusConnection *connection;
@@ -137,6 +170,7 @@ struct modem_data {
        /* ConnectionContext Interface */
        connman_bool_t active;
        connman_bool_t set_active;
+       connman_bool_t valid_apn; /* APN is 'valid' if length > 0 */
 
        /* SimManager Interface */
        char *imsi;
@@ -153,6 +187,24 @@ struct modem_data {
        DBusPendingCall *call_get_contexts;
 };
 
+static const char *api2string(enum ofono_api api)
+{
+       switch (api) {
+       case OFONO_API_SIM:
+               return "sim";
+       case OFONO_API_NETREG:
+               return "netreg";
+       case OFONO_API_CM:
+               return "cm";
+       case OFONO_API_CDMA_NETREG:
+               return "cdma-netreg";
+       case OFONO_API_CDMA_CM:
+               return "cmda-cm";
+       }
+
+       return "unknown";
+}
+
 static char *get_ident(const char *path)
 {
        char *pos;
@@ -208,6 +260,12 @@ static void set_connected(struct modem_data *modem)
 
        DBG("%s", modem->path);
 
+       if (modem->context->index < 0 ||
+                       modem->context->ipv4_address == NULL) {
+               connman_error("Invalid index and/or address");
+               return;
+       }
+
        connman_network_set_index(modem->network, modem->context->index);
 
        switch (modem->context->ipv4_method) {
@@ -259,6 +317,9 @@ static void set_disconnected(struct modem_data *modem)
 {
        DBG("%s", modem->path);
 
+       if (modem->network == NULL)
+               return;
+
        connman_network_set_connected(modem->network, FALSE);
 }
 
@@ -320,8 +381,10 @@ static int set_property(struct modem_data *modem,
        DBG("%s path %s %s.%s", modem->path, path, interface, property);
 
        if (modem->call_set_property != NULL) {
-               connman_error("Pending SetProperty");
-               return -EBUSY;
+               DBG("Cancel pending SetProperty");
+
+               dbus_pending_call_cancel(modem->call_set_property);
+               modem->call_set_property = NULL;
        }
 
        message = dbus_message_new_method_call(OFONO_SERVICE, path,
@@ -775,7 +838,7 @@ static void extract_ipv6_settings(DBusMessageIter *array,
 {
        DBusMessageIter dict;
        char *address = NULL, *gateway = NULL;
-       unsigned char prefix_length;
+       unsigned char prefix_length = 0;
        char *nameservers = NULL;
        const char *interface = NULL;
        int index = -1;
@@ -859,8 +922,6 @@ static connman_bool_t ready_to_create_device(struct modem_data *modem)
         * different:
         * - GSM modems will expose the SIM interface then the
         *   CM interface.
-        * - DUN modems will expose first a unique serial number (BDADDR)
-        *   and then the CM interface.
         * - CDMA modems will expose CM first and sometime later
         *   a unique serial number.
         *
@@ -880,7 +941,7 @@ static connman_bool_t ready_to_create_device(struct modem_data *modem)
 static void create_device(struct modem_data *modem)
 {
        struct connman_device *device;
-       char *uninitialized_var(ident);
+       char *ident = NULL;
 
        DBG("%s", modem->path);
 
@@ -914,6 +975,7 @@ static void create_device(struct modem_data *modem)
 
        modem->device = device;
 
+       connman_device_set_powered(modem->device, modem->online);
 out:
        g_free(ident);
 }
@@ -979,12 +1041,32 @@ static void add_network(struct modem_data *modem)
                modem->network = NULL;
                return;
        }
+
+       /*
+        * Create the ipconfig layer before trying to connect. Withouth
+        * the ipconfig layer the core is not ready to process errors.
+        */
+       connman_network_set_index(modem->network, -1);
+}
+
+static void remove_network(struct modem_data *modem)
+{
+       DBG("%s", modem->path);
+
+       if (modem->network == NULL)
+               return;
+
+       DBG("network %p", modem->network);
+
+       connman_device_remove_network(modem->device, modem->network);
+       connman_network_unref(modem->network);
+       modem->network = NULL;
 }
 
 static int add_cm_context(struct modem_data *modem, const char *context_path,
                                DBusMessageIter *dict)
 {
-       const char *context_type;
+       const char *context_type = NULL;
        struct network_context *context = NULL;
        connman_bool_t active = FALSE;
 
@@ -1029,8 +1111,17 @@ static int add_cm_context(struct modem_data *modem, const char *context_path,
                        dbus_message_iter_get_basic(&value, &active);
 
                        DBG("%s Active %d", modem->path, active);
-               }
+               } else if (g_str_equal(key, "AccessPointName") == TRUE) {
+                       const char *apn;
 
+                       dbus_message_iter_get_basic(&value, &apn);
+                       if (apn != NULL && strlen(apn) > 0)
+                               modem->valid_apn = TRUE;
+                       else
+                               modem->valid_apn = FALSE;
+
+                       DBG("%s AccessPointName '%s'", modem->path, apn);
+               }
                dbus_message_iter_next(dict);
        }
 
@@ -1044,6 +1135,12 @@ static int add_cm_context(struct modem_data *modem, const char *context_path,
 
        g_hash_table_replace(context_hash, g_strdup(context_path), modem);
 
+       if (modem->valid_apn == TRUE && modem->attached == TRUE &&
+                       has_interface(modem->interfaces,
+                               OFONO_API_NETREG) == TRUE) {
+               add_network(modem);
+       }
+
        return 0;
 }
 
@@ -1053,10 +1150,18 @@ static void remove_cm_context(struct modem_data *modem,
        if (modem->context == NULL)
                return;
 
+       if (modem->network != NULL)
+               remove_network(modem);
+
        g_hash_table_remove(context_hash, context_path);
 
        network_context_free(modem->context);
        modem->context = NULL;
+
+       modem->valid_apn = FALSE;
+
+       if (modem->network != NULL)
+               remove_network(modem);
 }
 
 static gboolean context_changed(DBusConnection *connection,
@@ -1104,6 +1209,39 @@ static gboolean context_changed(DBusConnection *connection,
                        set_connected(modem);
                else
                        set_disconnected(modem);
+       } else if (g_str_equal(key, "AccessPointName") == TRUE) {
+               const char *apn;
+
+               dbus_message_iter_get_basic(&value, &apn);
+
+               DBG("%s AccessPointName %s", modem->path, apn);
+
+               if (apn != NULL && strlen(apn) > 0) {
+                       modem->valid_apn = TRUE;
+
+                       if (modem->network != NULL)
+                               return TRUE;
+
+                       if (modem->attached == FALSE)
+                               return TRUE;
+
+                       if (has_interface(modem->interfaces,
+                                       OFONO_API_NETREG) == FALSE) {
+                               return TRUE;
+                       }
+
+                       add_network(modem);
+
+                       if (modem->active == TRUE)
+                               set_connected(modem);
+               } else {
+                       modem->valid_apn = FALSE;
+
+                       if (modem->network == NULL)
+                               return TRUE;
+
+                       remove_network(modem);
+               }
        }
 
        return TRUE;
@@ -1206,7 +1344,7 @@ static gboolean cm_context_added(DBusConnection *connection,
 
        DBG("%s", path);
 
-       modem = g_hash_table_lookup(modem_hash, context_path);
+       modem = g_hash_table_lookup(modem_hash, path);
        if (modem == NULL)
                return TRUE;
 
@@ -1360,11 +1498,12 @@ static void netreg_update_regdom(struct modem_data *modem,
 
 
        mcc = atoi(mobile_country_code);
-       if (mcc > 799)
+       if (mcc > 799 || mcc < 200)
                return;
 
        alpha2 = mcc_country_codes[mcc - 200];
-       connman_technology_set_regdom(alpha2);
+       if (alpha2 != NULL)
+               connman_technology_set_regdom(alpha2);
 }
 
 static gboolean netreg_changed(DBusConnection *connection, DBusMessage *message,
@@ -1441,7 +1580,8 @@ static void netreg_properties_reply(struct modem_data *modem,
                return;
        }
 
-       add_network(modem);
+       if (modem->valid_apn == TRUE)
+               add_network(modem);
 
        if (modem->active == TRUE)
                set_connected(modem);
@@ -1466,6 +1606,9 @@ static void add_cdma_network(struct modem_data *modem)
        if (modem->context == NULL)
                modem->context = network_context_alloc(modem->path);
 
+       if (modem->name == NULL)
+               modem->name = g_strdup("CDMA Network");
+
        add_network(modem);
 
        if (modem->cdma_cm_powered == TRUE)
@@ -1632,9 +1775,6 @@ static void cdma_cm_update_settings(struct modem_data *modem,
 {
        DBG("%s Settings", modem->path);
 
-       if (modem->context != NULL)
-               return;
-
        extract_ipv4_settings(value, modem->context);
 }
 
@@ -1731,33 +1871,6 @@ static int cdma_cm_get_properties(struct modem_data *modem)
                                cdma_cm_properties_reply, modem);
 }
 
-static connman_bool_t connection_manager_init(struct modem_data *modem)
-{
-       if (has_interface(modem->interfaces, OFONO_API_CM) == TRUE) {
-               if (ready_to_create_device(modem) == TRUE)
-                       create_device(modem);
-
-               if (modem->device != NULL) {
-                       cm_get_properties(modem);
-                       cm_get_contexts(modem);
-               }
-
-               return TRUE;
-       }
-
-       if (has_interface(modem->interfaces, OFONO_API_CDMA_CM) == TRUE) {
-               if (ready_to_create_device(modem) == TRUE)
-                       create_device(modem);
-
-               if (modem->device != NULL)
-                       cdma_cm_get_properties(modem);
-
-               return TRUE;
-       }
-
-       return FALSE;
-}
-
 static void sim_update_imsi(struct modem_data *modem,
                                DBusMessageIter* value)
 {
@@ -1797,17 +1910,16 @@ static gboolean sim_changed(DBusConnection *connection, DBusMessage *message,
        if (g_str_equal(key, "SubscriberIdentity") == TRUE) {
                sim_update_imsi(modem, &value);
 
-               if (modem->online == FALSE) {
-                       modem_set_online(modem, TRUE);
-               } else if (has_interface(modem->interfaces,
-                                               OFONO_API_CM) == TRUE) {
-                       if (ready_to_create_device(modem) == TRUE)
-                               create_device(modem);
-               } else if (has_interface(modem->interfaces,
-                                               OFONO_API_CDMA_CM) == TRUE) {
-                       if (ready_to_create_device(modem) == TRUE)
-                               create_device(modem);
-               }
+               if (ready_to_create_device(modem) == FALSE)
+                       return TRUE;
+
+               /*
+                * This is a GSM modem. Create the device and
+                * register it at the core. Enabling (setting
+                * it online is done through the
+                * modem_enable() callback.
+                */
+               create_device(modem);
        }
 
        return TRUE;
@@ -1831,13 +1943,30 @@ static void sim_properties_reply(struct modem_data *modem,
                if (g_str_equal(key, "SubscriberIdentity") == TRUE) {
                        sim_update_imsi(modem, &value);
 
-                       if (modem->online == FALSE) {
-                               modem_set_online(modem, TRUE);
-                               break;
-                       }
+                       if (ready_to_create_device(modem) == FALSE)
+                               return;
 
-                       connection_manager_init(modem);
+                       /*
+                        * This is a GSM modem. Create the device and
+                        * register it at the core. Enabling (setting
+                        * it online is done through the
+                        * modem_enable() callback.
+                        */
+                       create_device(modem);
 
+                       if (modem->online == FALSE)
+                               return;
+
+                       /*
+                        * The modem is already online and we have the CM interface.
+                        * There will be no interface update and therefore our
+                        * state machine will not go to next step. We have to
+                        * trigger it from here.
+                        */
+                       if (has_interface(modem->interfaces, OFONO_API_CM) == TRUE) {
+                               cm_get_properties(modem);
+                               cm_get_contexts(modem);
+                       }
                        return;
                }
 
@@ -1851,6 +1980,88 @@ static int sim_get_properties(struct modem_data *modem)
                                sim_properties_reply, modem);
 }
 
+static connman_bool_t api_added(uint8_t old_iface, uint8_t new_iface,
+                               enum ofono_api api)
+{
+       if (has_interface(old_iface, api) == FALSE &&
+                       has_interface(new_iface, api) == TRUE) {
+               DBG("%s added", api2string(api));
+               return TRUE;
+       }
+
+       return FALSE;
+}
+
+static connman_bool_t api_removed(uint8_t old_iface, uint8_t new_iface,
+                               enum ofono_api api)
+{
+       if (has_interface(old_iface, api) == TRUE &&
+                       has_interface(new_iface, api) == FALSE) {
+               DBG("%s removed", api2string(api));
+               return TRUE;
+       }
+
+       return FALSE;
+}
+
+static void modem_update_interfaces(struct modem_data *modem,
+                               uint8_t old_ifaces,
+                               uint8_t new_ifaces)
+{
+       DBG("%s", modem->path);
+
+       if (api_added(old_ifaces, new_ifaces, OFONO_API_SIM) == TRUE) {
+               if (modem->imsi == NULL &&
+                               modem->set_powered == FALSE) {
+                       /*
+                        * Only use do GetProperties() when
+                        * device has not been powered up.
+                        */
+                       sim_get_properties(modem);
+               }
+       }
+
+       if (api_added(old_ifaces, new_ifaces, OFONO_API_CM) == TRUE) {
+               if (modem->device != NULL) {
+                       cm_get_properties(modem);
+                       cm_get_contexts(modem);
+               }
+       }
+
+       if (api_added(old_ifaces, new_ifaces, OFONO_API_CDMA_CM) == TRUE) {
+               if (ready_to_create_device(modem) == TRUE)
+                       create_device(modem);
+
+               if (modem->device != NULL)
+                       cdma_cm_get_properties(modem);
+       }
+
+       if (api_added(old_ifaces, new_ifaces, OFONO_API_NETREG) == TRUE) {
+               if (modem->attached == TRUE)
+                       netreg_get_properties(modem);
+       }
+
+       if (api_added(old_ifaces, new_ifaces, OFONO_API_CDMA_NETREG) == TRUE) {
+               cdma_netreg_get_properties(modem);
+       }
+
+       if (api_removed(old_ifaces, new_ifaces, OFONO_API_CM) == TRUE) {
+               remove_cm_context(modem, modem->context->path);
+       }
+
+       if (api_removed(old_ifaces, new_ifaces, OFONO_API_CDMA_CM) == TRUE) {
+               remove_cm_context(modem, modem->context->path);
+       }
+
+       if (api_removed(old_ifaces, new_ifaces, OFONO_API_NETREG) == TRUE) {
+               remove_network(modem);
+       }
+
+       if (api_removed(old_ifaces, new_ifaces, OFONO_API_CDMA_NETREG == TRUE)) {
+               remove_network(modem);
+       }
+}
+
 static gboolean modem_changed(DBusConnection *connection, DBusMessage *message,
                                void *user_data)
 {
@@ -1886,46 +2097,23 @@ static gboolean modem_changed(DBusConnection *connection, DBusMessage *message,
 
                DBG("%s Online %d", modem->path, modem->online);
 
-               if (modem->online == FALSE)
+               if (modem->device == NULL)
                        return TRUE;
 
-               connection_manager_init(modem);
+               connman_device_set_powered(modem->device, modem->online);
        } else if (g_str_equal(key, "Interfaces") == TRUE) {
-               modem->interfaces = extract_interfaces(&value);
-
-               DBG("%s Interfaces 0x%02x", modem->path,
-                       modem->interfaces);
-
-               if (has_interface(modem->interfaces, OFONO_API_SIM) == TRUE) {
-                       if (modem->imsi == NULL &&
-                                       modem->set_powered == FALSE) {
-                               /*
-                                * Only use do GetProperties() when
-                                * device has not been powered up.
-                                */
-                               sim_get_properties(modem);
-                               return TRUE;
-                       }
-               }
-
-               if (connection_manager_init(modem) == FALSE) {
-                       if (modem->context != NULL) {
-                               remove_cm_context(modem,
-                                               modem->context->path);
-                       }
+               uint8_t interfaces;
 
-                       if (modem->device != NULL)
-                               destroy_device(modem);
+               interfaces = extract_interfaces(&value);
 
+               if (interfaces == modem->interfaces)
                        return TRUE;
-               }
 
-               if (has_interface(modem->interfaces, OFONO_API_NETREG) == TRUE) {
-                       if (modem->attached == TRUE)
-                               netreg_get_properties(modem);
-               } else if (has_interface(modem->interfaces,
-                               OFONO_API_CDMA_NETREG) == TRUE)
-                       cdma_netreg_get_properties(modem);
+               DBG("%s Interfaces 0x%02x", modem->path, interfaces);
+
+               modem_update_interfaces(modem, modem->interfaces, interfaces);
+
+               modem->interfaces = interfaces;
        } else if (g_str_equal(key, "Serial") == TRUE) {
                char *serial;
 
@@ -1936,7 +2124,11 @@ static gboolean modem_changed(DBusConnection *connection, DBusMessage *message,
 
                DBG("%s Serial %s", modem->path, modem->serial);
 
-               connection_manager_init(modem);
+               if (has_interface(modem->interfaces,
+                                        OFONO_API_CDMA_CM) == TRUE) {
+                       if (ready_to_create_device(modem) == TRUE)
+                               create_device(modem);
+               }
        }
 
        return TRUE;
@@ -2014,12 +2206,12 @@ static void add_modem(const char *path, DBusMessageIter *prop)
        if (modem->ignore == TRUE)
                return;
 
-       if (modem->powered == FALSE)
+       if (modem->powered == FALSE) {
                modem_set_powered(modem, TRUE);
-       else if (has_interface(modem->interfaces, OFONO_API_SIM) == TRUE)
-               sim_get_properties(modem);
-       else
-               connection_manager_init(modem);
+               return;
+       }
+
+       modem_update_interfaces(modem, 0, modem->interfaces);
 }
 
 static void modem_power_down(gpointer key, gpointer value, gpointer user_data)
@@ -2261,7 +2453,7 @@ static int network_disconnect(struct connman_network *network)
 }
 
 static struct connman_network_driver network_driver = {
-       .name           = "network",
+       .name           = "cellular",
        .type           = CONNMAN_NETWORK_TYPE_CELLULAR,
        .probe          = network_probe,
        .remove         = network_remove,
@@ -2291,7 +2483,10 @@ static int modem_enable(struct connman_device *device)
 
        DBG("%s device %p", modem->path, device);
 
-       return 0;
+       if (modem->online == TRUE)
+               return 0;
+
+       return modem_set_online(modem, TRUE);
 }
 
 static int modem_disable(struct connman_device *device)
@@ -2300,7 +2495,10 @@ static int modem_disable(struct connman_device *device)
 
        DBG("%s device %p", modem->path, device);
 
-       return 0;
+       if (modem->online == FALSE)
+               return 0;
+
+       return modem_set_online(modem, FALSE);
 }
 
 static struct connman_device_driver modem_driver = {
@@ -2312,6 +2510,22 @@ static struct connman_device_driver modem_driver = {
        .disable        = modem_disable,
 };
 
+static int tech_probe(struct connman_technology *technology)
+{
+       return 0;
+}
+
+static void tech_remove(struct connman_technology *technology)
+{
+}
+
+static struct connman_technology_driver tech_driver = {
+       .name           = "cellular",
+       .type           = CONNMAN_SERVICE_TYPE_CELLULAR,
+       .probe          = tech_probe,
+       .remove         = tech_remove,
+};
+
 static guint watch;
 static guint modem_added_watch;
 static guint modem_removed_watch;
@@ -2339,68 +2553,71 @@ static int ofono_init(void)
                                        OFONO_SERVICE, ofono_connect,
                                        ofono_disconnect, NULL, NULL);
 
-       modem_added_watch = g_dbus_add_signal_watch(connection, NULL, NULL,
-                                               OFONO_MANAGER_INTERFACE,
+       modem_added_watch = g_dbus_add_signal_watch(connection, OFONO_SERVICE,
+                                               NULL, OFONO_MANAGER_INTERFACE,
                                                MODEM_ADDED,
                                                modem_added,
                                                NULL, NULL);
 
-       modem_removed_watch = g_dbus_add_signal_watch(connection, NULL, NULL,
+       modem_removed_watch = g_dbus_add_signal_watch(connection,
+                                               OFONO_SERVICE, NULL,
                                                OFONO_MANAGER_INTERFACE,
                                                MODEM_REMOVED,
                                                modem_removed,
                                                NULL, NULL);
 
-       modem_watch = g_dbus_add_signal_watch(connection, NULL, NULL,
+       modem_watch = g_dbus_add_signal_watch(connection, OFONO_SERVICE, NULL,
                                                OFONO_MODEM_INTERFACE,
                                                PROPERTY_CHANGED,
                                                modem_changed,
                                                NULL, NULL);
 
-       cm_watch = g_dbus_add_signal_watch(connection, NULL, NULL,
+       cm_watch = g_dbus_add_signal_watch(connection, OFONO_SERVICE, NULL,
                                                OFONO_CM_INTERFACE,
                                                PROPERTY_CHANGED,
                                                cm_changed,
                                                NULL, NULL);
 
-       sim_watch = g_dbus_add_signal_watch(connection, NULL, NULL,
+       sim_watch = g_dbus_add_signal_watch(connection, OFONO_SERVICE, NULL,
                                                OFONO_SIM_INTERFACE,
                                                PROPERTY_CHANGED,
                                                sim_changed,
                                                NULL, NULL);
 
-       context_added_watch = g_dbus_add_signal_watch(connection, NULL, NULL,
+       context_added_watch = g_dbus_add_signal_watch(connection,
+                                               OFONO_SERVICE, NULL,
                                                OFONO_CM_INTERFACE,
                                                CONTEXT_ADDED,
                                                cm_context_added,
                                                NULL, NULL);
 
-       context_removed_watch = g_dbus_add_signal_watch(connection, NULL, NULL,
+       context_removed_watch = g_dbus_add_signal_watch(connection,
+                                               OFONO_SERVICE, NULL,
                                                OFONO_CM_INTERFACE,
                                                CONTEXT_REMOVED,
                                                cm_context_removed,
                                                NULL, NULL);
 
-       context_watch = g_dbus_add_signal_watch(connection, NULL, NULL,
-                                               OFONO_CONTEXT_INTERFACE,
+       context_watch = g_dbus_add_signal_watch(connection, OFONO_SERVICE,
+                                               NULL, OFONO_CONTEXT_INTERFACE,
                                                PROPERTY_CHANGED,
                                                context_changed,
                                                NULL, NULL);
 
-       netreg_watch = g_dbus_add_signal_watch(connection, NULL, NULL,
+       netreg_watch = g_dbus_add_signal_watch(connection, OFONO_SERVICE, NULL,
                                                OFONO_NETREG_INTERFACE,
                                                PROPERTY_CHANGED,
                                                netreg_changed,
                                                NULL, NULL);
 
-       cdma_cm_watch = g_dbus_add_signal_watch(connection, NULL, NULL,
-                                               OFONO_CDMA_CM_INTERFACE,
+       cdma_cm_watch = g_dbus_add_signal_watch(connection, OFONO_SERVICE,
+                                               NULL, OFONO_CDMA_CM_INTERFACE,
                                                PROPERTY_CHANGED,
                                                cdma_cm_changed,
                                                NULL, NULL);
 
-       cdma_netreg_watch = g_dbus_add_signal_watch(connection, NULL, NULL,
-                                               OFONO_CDMA_NETREG_INTERFACE,
+       cdma_netreg_watch = g_dbus_add_signal_watch(connection, OFONO_SERVICE,
+                                               NULL, OFONO_CDMA_NETREG_INTERFACE,
                                                PROPERTY_CHANGED,
                                                cdma_netreg_changed,
                                                NULL, NULL);
@@ -2426,6 +2643,13 @@ static int ofono_init(void)
                goto remove;
        }
 
+       err = connman_technology_driver_register(&tech_driver);
+       if (err < 0) {
+               connman_device_driver_unregister(&modem_driver);
+               connman_network_driver_unregister(&network_driver);
+               goto remove;
+       }
+
        return 0;
 
 remove:
@@ -2469,6 +2693,7 @@ static void ofono_exit(void)
                context_hash = NULL;
        }
 
+       connman_technology_driver_unregister(&tech_driver);
        connman_device_driver_unregister(&modem_driver);
        connman_network_driver_unregister(&network_driver);