device: add link_type property

This is to make it possible for the device factories to indicate the desired
link type and make it possible to avoid matching the unrealized device to a
platform device of different link type.

src/devices/nm-device.c

@@ -114,6 +114,7 @@ enum {
 	PROP_STATE_REASON,
 	PROP_ACTIVE_CONNECTION,
 	PROP_DEVICE_TYPE,
+	PROP_LINK_TYPE,
 	PROP_MANAGED,
 	PROP_AUTOCONNECT,
 	PROP_FIRMWARE_MISSING,
@@ -215,6 +216,7 @@ typedef struct _NMDevicePrivate {
 	NMDeviceType  type;
 	char *        type_desc;
 	char *        type_description;
+	NMLinkType    link_type;
 	NMDeviceCapabilities capabilities;
 	char *        driver;
 	char *        driver_version;
@@ -710,6 +712,14 @@ nm_device_get_device_type (NMDevice *self)
 	return NM_DEVICE_GET_PRIVATE (self)->type;
 }
 
+NMLinkType
+nm_device_get_link_type (NMDevice *self)
+{
+	g_return_val_if_fail (NM_IS_DEVICE (self), NM_LINK_TYPE_UNKNOWN);
+
+	return NM_DEVICE_GET_PRIVATE (self)->link_type;
+}
+
 /**
  * nm_device_get_metered:
  * @setting: the #NMDevice
@@ -10064,12 +10074,25 @@ constructed (GObject *object)
 	NMDevice *self = NM_DEVICE (object);
 	NMDevicePrivate *priv = NM_DEVICE_GET_PRIVATE (self);
 	NMPlatform *platform;
+	const NMPlatformLink *pllink;
+
+	platform = nm_platform_get ();
+
+	if (priv->iface) {
+		pllink = nm_platform_link_get_by_ifname (platform, priv->iface);
+
+		nm_assert (pllink->type != NM_LINK_TYPE_NONE);
+
+		if (pllink && link_type_compatible (self, pllink->type, NULL, NULL)) {
+			priv->ifindex = pllink->ifindex;
+			priv->up = NM_FLAGS_HAS (pllink->flags, IFF_UP);
+		}
+	}
 
 	if (NM_DEVICE_GET_CLASS (self)->get_generic_capabilities)
 		priv->capabilities |= NM_DEVICE_GET_CLASS (self)->get_generic_capabilities (self);
 
 	/* Watch for external IP config changes */
-	platform = nm_platform_get ();
 	g_signal_connect (platform, NM_PLATFORM_SIGNAL_IP4_ADDRESS_CHANGED, G_CALLBACK (device_ipx_changed), self);
 	g_signal_connect (platform, NM_PLATFORM_SIGNAL_IP6_ADDRESS_CHANGED, G_CALLBACK (device_ipx_changed), self);
 	g_signal_connect (platform, NM_PLATFORM_SIGNAL_IP4_ROUTE_CHANGED, G_CALLBACK (device_ipx_changed), self);
@@ -10214,7 +10237,6 @@ set_property (GObject *object, guint prop_id,
 	const char *hw_addr, *p;
 	guint count;
 	gboolean val_bool;
-	const NMPlatformLink *pllink;
 
 	switch (prop_id) {
 	case PROP_UDI:
@@ -10224,20 +10246,9 @@ set_property (GObject *object, guint prop_id,
 		}
 		break;
 	case PROP_IFACE:
-		p = g_value_get_string (value);
+		/* construct only */
-		if (p) {
+		g_return_if_fail (!priv->iface);
-
+		priv->iface = g_value_dup_string (value);
-			g_free (priv->iface);
-			priv->iface = g_strdup (p);
-
-			pllink = nm_platform_link_get_by_ifname (NM_PLATFORM_GET, priv->iface);
-			if (pllink) {
-				if (link_type_compatible (self, pllink->type, NULL, NULL)) {
-					priv->ifindex = pllink->ifindex;
-					priv->up = nm_platform_link_is_up (NM_PLATFORM_GET, priv->ifindex);
-				}
-			}
-		}
 		break;
 	case PROP_DRIVER:
 		if (g_value_get_string (value)) {
@@ -10280,6 +10291,11 @@ set_property (GObject *object, guint prop_id,
 		g_return_if_fail (priv->type == NM_DEVICE_TYPE_UNKNOWN);
 		priv->type = g_value_get_uint (value);
 		break;
+	case PROP_LINK_TYPE:
+		/* construct only */
+		g_return_if_fail (priv->link_type == NM_LINK_TYPE_NONE);
+		priv->link_type = g_value_get_uint (value);
+		break;
 	case PROP_TYPE_DESC:
 		g_free (priv->type_desc);
 		priv->type_desc = g_value_dup_string (value);
@@ -10396,6 +10412,9 @@ get_property (GObject *object, guint prop_id,
 	case PROP_DEVICE_TYPE:
 		g_value_set_uint (value, priv->type);
 		break;
+	case PROP_LINK_TYPE:
+		g_value_set_uint (value, priv->link_type);
+		break;
 	case PROP_MANAGED:
 		g_value_set_boolean (value, nm_device_get_managed (self));
 		break;
@@ -10648,6 +10667,13 @@ nm_device_class_init (NMDeviceClass *klass)
 		                    G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY |
 		                    G_PARAM_STATIC_STRINGS));
 
+	g_object_class_install_property
+		(object_class, PROP_LINK_TYPE,
+		 g_param_spec_uint (NM_DEVICE_LINK_TYPE, "", "",
+		                    0, G_MAXUINT32, NM_LINK_TYPE_NONE,
+		                    G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY |
+		                    G_PARAM_STATIC_STRINGS));
+
 	g_object_class_install_property
 		(object_class, PROP_MANAGED,
 		 g_param_spec_boolean (NM_DEVICE_MANAGED, "", "",

src/devices/nm-device.h

@@ -49,6 +49,7 @@
 #define NM_DEVICE_STATE_REASON     "state-reason"
 #define NM_DEVICE_ACTIVE_CONNECTION "active-connection"
 #define NM_DEVICE_DEVICE_TYPE      "device-type" /* ugh */
+#define NM_DEVICE_LINK_TYPE        "link-type"
 #define NM_DEVICE_MANAGED          "managed"
 #define NM_DEVICE_AUTOCONNECT      "autoconnect"
 #define NM_DEVICE_FIRMWARE_MISSING "firmware-missing"
@@ -372,6 +373,7 @@ const char *	nm_device_get_driver_version	(NMDevice *dev);
 const char *	nm_device_get_type_desc (NMDevice *dev);
 const char *	nm_device_get_type_description (NMDevice *dev);
 NMDeviceType	nm_device_get_device_type	(NMDevice *dev);
+NMLinkType	nm_device_get_link_type	(NMDevice *dev);
 NMMetered       nm_device_get_metered	(NMDevice *dev);
 
 int			nm_device_get_priority (NMDevice *dev);