core: fix a spurious warning with non-kernel network devices

NMDevice was warning about not being able to set ifindex even on
devices that we know don't have an ifindex.

https://bugzilla.gnome.org/show_bug.cgi?id=739889

src/devices/adsl/nm-device-adsl.c

@@ -76,7 +76,9 @@ typedef struct {
 static guint32
 get_generic_capabilities (NMDevice *dev)
 {
-	return (NM_DEVICE_CAP_CARRIER_DETECT | NM_DEVICE_CAP_NONSTANDARD_CARRIER);
+	return (  NM_DEVICE_CAP_CARRIER_DETECT
+	        | NM_DEVICE_CAP_NONSTANDARD_CARRIER
+	        | NM_DEVICE_CAP_IS_NON_KERNEL);
 }
 
 static gboolean

src/devices/bluetooth/nm-device-bt.c

@@ -124,6 +124,12 @@ get_connection_bt_type (NMConnection *connection)
 	return NM_BT_CAPABILITY_NONE;
 }
 
+static guint32
+get_generic_capabilities (NMDevice *device)
+{
+	return NM_DEVICE_CAP_IS_NON_KERNEL;
+}
+
 static gboolean
 can_auto_connect (NMDevice *device,
                   NMConnection *connection,
@@ -1179,6 +1185,7 @@ nm_device_bt_class_init (NMDeviceBtClass *klass)
 	object_class->dispose = dispose;
 	object_class->finalize = finalize;
 
+	device_class->get_generic_capabilities = get_generic_capabilities;
 	device_class->can_auto_connect = can_auto_connect;
 	device_class->deactivate = deactivate;
 	device_class->act_stage2_config = act_stage2_config;

src/devices/nm-device-private.h

@@ -37,8 +37,9 @@ enum NMActStageReturn {
 };
 
 #define NM_DEVICE_CAP_NONSTANDARD_CARRIER 0x80000000
+#define NM_DEVICE_CAP_IS_NON_KERNEL       0x40000000
 
-#define NM_DEVICE_CAP_INTERNAL_MASK 0x80000000
+#define NM_DEVICE_CAP_INTERNAL_MASK 0xc0000000
 
 void nm_device_set_ip_iface (NMDevice *self, const char *iface);
 

src/devices/nm-device.c

@@ -7771,6 +7771,9 @@ constructor (GType type,
 	if (NM_DEVICE_GET_CLASS (self)->get_generic_capabilities)
 		priv->capabilities |= NM_DEVICE_GET_CLASS (self)->get_generic_capabilities (self);
 
+	if (priv->ifindex <= 0 && !device_has_capability (self, NM_DEVICE_CAP_IS_NON_KERNEL))
+		_LOGW (LOGD_HW, "failed to look up interface index");
+
 	device_get_driver_info (self, priv->iface, &priv->driver_version, &priv->firmware_version);
 
 	/* Watch for external IP config changes */
@@ -7969,18 +7972,8 @@ set_property (GObject *object, guint prop_id,
 	case PROP_IFACE:
 		if (g_value_get_string (value)) {
 			g_free (priv->iface);
-			priv->ifindex = 0;
 			priv->iface = g_value_dup_string (value);
-
-			/* Only look up the ifindex if it appears to be an actual kernel
-			 * interface name.  eg Bluetooth devices won't have one until we know
-			 * the IP interface.
-			 */
-			if (priv->iface && !strchr (priv->iface, ':')) {
-				priv->ifindex = nm_platform_link_get_ifindex (priv->iface);
-				if (priv->ifindex <= 0)
-					_LOGW (LOGD_HW, "failed to look up interface index");
-			}
+			priv->ifindex = nm_platform_link_get_ifindex (priv->iface);
 		}
 		break;
 	case PROP_DRIVER:

src/devices/wwan/nm-device-modem.c

@@ -373,6 +373,12 @@ device_state_changed (NMDevice *device,
 	}
 }
 
+static guint32
+get_generic_capabilities (NMDevice *device)
+{
+	return NM_DEVICE_CAP_IS_NON_KERNEL;
+}
+
 static gboolean
 check_connection_compatible (NMDevice *device, NMConnection *connection)
 {
@@ -701,6 +707,7 @@ nm_device_modem_class_init (NMDeviceModemClass *mclass)
 	object_class->set_property = set_property;
 	object_class->constructed = constructed;
 
+	device_class->get_generic_capabilities = get_generic_capabilities;
 	device_class->check_connection_compatible = check_connection_compatible;
 	device_class->check_connection_available = check_connection_available;
 	device_class->complete_connection = complete_connection;

src/tests/config/nm-test-device.c

@@ -67,10 +67,17 @@ finalize (GObject *object)
 	g_object_class->finalize (object);
 }
 
+static guint32
+get_generic_capabilities (NMDevice *device)
+{
+	return NM_DEVICE_CAP_IS_NON_KERNEL;
+}
+
 static void
 nm_test_device_class_init (NMTestDeviceClass *klass)
 {
 	GObjectClass *object_class = G_OBJECT_CLASS (klass);
+	NMDeviceClass *device_class = NM_DEVICE_CLASS (klass);
 
 	g_object_class = g_type_class_peek (G_TYPE_OBJECT);
 
@@ -78,13 +85,15 @@ nm_test_device_class_init (NMTestDeviceClass *klass)
 	object_class->constructed = constructed;
 	object_class->dispose = dispose;
 	object_class->finalize = finalize;
+
+	device_class->get_generic_capabilities = get_generic_capabilities;
 }
 
 NMDevice *
 nm_test_device_new (const char *hwaddr)
 {
 	return g_object_new (NM_TYPE_TEST_DEVICE,
-	                     NM_DEVICE_IFACE, "dummy:",
+	                     NM_DEVICE_IFACE, "dummy",
 	                     NM_DEVICE_HW_ADDRESS, hwaddr,
 	                     NULL);
 }

src/tests/config/test-config.c

@@ -26,6 +26,7 @@
 
 #include <nm-config.h>
 #include "nm-test-device.h"
+#include "nm-fake-platform.h"
 
 static void
 setup_config (const char *config_file, const char *config_dir, ...)
@@ -287,6 +288,8 @@ main (int argc, char **argv)
 
 	g_test_init (&argc, &argv, NULL);
 
+	nm_fake_platform_setup ();
+
 	g_test_add_func ("/config/simple", test_config_simple);
 	g_test_add_func ("/config/non-existent", test_config_non_existent);
 	g_test_add_func ("/config/parse-error", test_config_parse_error);