device: register a bridge for Bluetooth NAP with Bluez

Bluez needs to know about then so that it can eventually enslave the BNEP links
for PANU client connections to it.

src/devices/bluetooth/nm-bluez-common.h

@@ -15,7 +15,7 @@
  * with this program; if not, write to the Free Software Foundation, Inc.,
  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  *
- * Copyright (C) 2009 Red Hat, Inc.
+ * Copyright (C) 2017 Red Hat, Inc.
  */
 
 #ifndef __NETWORKMANAGER_BLUEZ_COMMON_H__

src/devices/nm-device.c

@@ -70,6 +70,7 @@
 #include "nm-arping-manager.h"
 #include "nm-connectivity.h"
 #include "nm-dbus-interface.h"
+#include "bluetooth/nm-bluez-common.h"
 
 #include "nm-device-logging.h"
 _LOG_DECLARE_SELF (NMDevice);
@@ -4364,6 +4365,70 @@ dnsmasq_state_changed_cb (NMDnsMasqManager *manager, guint32 status, gpointer us
 
 /*****************************************************************************/
 
+const NMBtVTableNetworkServer *nm_bt_vtable_network_server = NULL;
+
+static NMSettingBluetooth *
+_setting_bluetooth_for_bt_nap (NMConnection *connection)
+{
+	NMSettingBluetooth *s_bt = nm_connection_get_setting_bluetooth (connection);
+
+	if (!s_bt)
+		return NULL;
+	if (!nm_streq0 (nm_setting_bluetooth_get_connection_type (s_bt), NM_SETTING_BLUETOOTH_TYPE_NAP))
+		return NULL;
+
+	return s_bt;
+}
+
+static gboolean
+bt_network_server_available (NMConnection *connection)
+{
+	NMSettingBluetooth *s_bt = _setting_bluetooth_for_bt_nap (connection);
+
+	if (!s_bt)
+		return TRUE;
+	if (!nm_bt_vtable_network_server)
+		return FALSE;
+	return nm_bt_vtable_network_server->is_available (nm_bt_vtable_network_server,
+	                                                  nm_setting_bluetooth_get_bdaddr (s_bt));
+}
+
+static gboolean
+bt_network_server_register (NMDevice *self)
+{
+	NMConnection *connection = nm_device_get_applied_connection (self);
+	NMSettingBluetooth *s_bt = _setting_bluetooth_for_bt_nap (connection);
+
+	if (!s_bt)
+		return TRUE;
+	if (!nm_bt_vtable_network_server)
+		return FALSE;
+	return nm_bt_vtable_network_server->register_bridge (nm_bt_vtable_network_server,
+	                                                     nm_setting_bluetooth_get_bdaddr (s_bt),
+	                                                     BLUETOOTH_CONNECT_NAP,
+	                                                     self);
+}
+
+static void
+bt_network_server_unregister (NMDevice *self)
+{
+	NMConnection *connection = nm_device_get_applied_connection (self);
+	NMSettingBluetooth *s_bt;
+
+	if (!connection)
+		return;
+	s_bt = _setting_bluetooth_for_bt_nap (connection);
+	if (!s_bt)
+		return;
+
+	if (!nm_bt_vtable_network_server)
+		return;
+	nm_bt_vtable_network_server->unregister_bridge (nm_bt_vtable_network_server,
+	                                                self);
+}
+
+/*****************************************************************************/
+
 static gboolean
 activation_source_handle_cb4 (gpointer user_data)
 {
@@ -4749,6 +4814,12 @@ activate_stage2_device_config (NMDevice *self)
 			nm_device_queue_recheck_assume (info->slave);
 	}
 
+	if (!bt_network_server_register (self)) {
+		/* The HCI we could use is no longer present. */
+		nm_device_state_changed (self, NM_DEVICE_STATE_FAILED, NM_DEVICE_STATE_REASON_REMOVED);
+		return;
+	}
+
 	lldp_init (self, TRUE);
 	nm_device_activate_schedule_stage3_ip_config_start (self);
 }
@@ -11438,6 +11509,9 @@ _nm_device_check_connection_available (NMDevice *self,
 {
 	NMDeviceState state;
 
+	if (!bt_network_server_available (connection))
+		return FALSE;
+
 	/* an unrealized software device is always available, hardware devices never. */
 	if (!nm_device_is_real (self)) {
 		if (nm_device_is_software (self))
@@ -11879,6 +11953,8 @@ _cleanup_generic_pre (NMDevice *self, CleanupType cleanup_type)
 
 	queued_state_clear (self);
 
+	bt_network_server_unregister (self);
+
 	_cleanup_ip4_pre (self, cleanup_type);
 	_cleanup_ip6_pre (self, cleanup_type);
 }

src/devices/nm-device.h

@@ -705,4 +705,16 @@ void nm_device_check_connectivity (NMDevice *self,
                                    gpointer user_data);
 NMConnectivityState nm_device_get_connectivity_state (NMDevice *self);
 
+typedef struct _NMBtVTableNetworkServer NMBtVTableNetworkServer;
+struct _NMBtVTableNetworkServer {
+	gboolean (*is_available) (const NMBtVTableNetworkServer *vtable,
+	                          const char *addr);
+	gboolean (*register_bridge) (const NMBtVTableNetworkServer *vtable,
+	                             const char *addr, const char *uuid, NMDevice *device);
+	gboolean (*unregister_bridge) (const NMBtVTableNetworkServer *vtable,
+	                               NMDevice *device);
+};
+
+extern const NMBtVTableNetworkServer *nm_bt_vtable_network_server;
+
 #endif /* __NETWORKMANAGER_DEVICE_H__ */