devices: add NMDevice6Lowpan

9 files changed, 424 insertions, 0 deletions

diff --git a/Makefile.am b/Makefile.am
index 52d8da8761..ea43127e81 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -1572,6 +1572,8 @@ src_libNetworkManager_la_SOURCES = \
 	src/devices/nm-device-logging.h \
 	src/devices/nm-device-private.h \
 	\
+	src/devices/nm-device-6lowpan.c \
+	src/devices/nm-device-6lowpan.h \
 	src/devices/nm-device-bond.c \
 	src/devices/nm-device-bond.h \
 	src/devices/nm-device-bridge.c \
diff --git a/libnm-core/nm-dbus-interface.h b/libnm-core/nm-dbus-interface.h
index ae78755eb6..c8e442f478 100644
--- a/libnm-core/nm-dbus-interface.h
+++ b/libnm-core/nm-dbus-interface.h
@@ -215,6 +215,7 @@ typedef enum {
  * @NM_DEVICE_TYPE_OVS_PORT: a OpenVSwitch port
  * @NM_DEVICE_TYPE_OVS_BRIDGE: a OpenVSwitch bridge
  * @NM_DEVICE_TYPE_WPAN: a IEEE 802.15.4 (WPAN) MAC Layer Device
+ * @NM_DEVICE_TYPE_6LOWPAN: 6LoWPAN interface
  *
  * #NMDeviceType values indicate the type of hardware represented by a
  * device object.
@@ -248,6 +249,7 @@ typedef enum {
 	NM_DEVICE_TYPE_OVS_PORT      = 25,
 	NM_DEVICE_TYPE_OVS_BRIDGE    = 26,
 	NM_DEVICE_TYPE_WPAN          = 27,
+	NM_DEVICE_TYPE_6LOWPAN       = 28,
 } NMDeviceType;
 
 /**
diff --git a/libnm/nm-device.c b/libnm/nm-device.c
index da4b51a2c5..d872df7b51 100644
--- a/libnm/nm-device.c
+++ b/libnm/nm-device.c
@@ -285,6 +285,7 @@ coerce_type (NMDeviceType type)
 	case NM_DEVICE_TYPE_DUMMY:
 	case NM_DEVICE_TYPE_PPP:
 	case NM_DEVICE_TYPE_WPAN:
+	case NM_DEVICE_TYPE_6LOWPAN:
 		return type;
 	}
 	return NM_DEVICE_TYPE_UNKNOWN;
@@ -1348,6 +1349,8 @@ get_type_name (NMDevice *device)
 		return _("PPP");
 	case NM_DEVICE_TYPE_WPAN:
 		return _("IEEE 802.15.4");
+	case NM_DEVICE_TYPE_6LOWPAN:
+		return _("6LoWPAN");
 	case NM_DEVICE_TYPE_GENERIC:
 	case NM_DEVICE_TYPE_UNUSED1:
 	case NM_DEVICE_TYPE_UNUSED2:
diff --git a/po/POTFILES.in b/po/POTFILES.in
index f9b99f3430..8fe7d35cb6 100644
--- a/po/POTFILES.in
+++ b/po/POTFILES.in
@@ -172,6 +172,7 @@ src/dns/nm-dns-manager.c
 src/devices/adsl/nm-device-adsl.c
 src/devices/bluetooth/nm-bluez-device.c
 src/devices/bluetooth/nm-device-bt.c
+src/devices/nm-device-6lowpan.c
 src/devices/nm-device-bond.c
 src/devices/nm-device-bridge.c
 src/devices/nm-device-dummy.c
diff --git a/src/devices/nm-device-6lowpan.c b/src/devices/nm-device-6lowpan.c
new file mode 100644
index 0000000000..9119ab00c3
--- /dev/null
+++ b/src/devices/nm-device-6lowpan.c
@@ -0,0 +1,375 @@
+/* NetworkManager -- Network link manager
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Copyright 2018 Red Hat, Inc.
+ */
+
+#include "nm-default.h"
+
+#include "nm-device-6lowpan.h"
+
+#include "nm-device-private.h"
+#include "settings/nm-settings.h"
+#include "platform/nm-platform.h"
+#include "nm-device-factory.h"
+#include "nm-setting-6lowpan.h"
+#include "nm-utils.h"
+
+#include "nm-device-logging.h"
+_LOG_DECLARE_SELF(NMDevice6Lowpan);
+
+/*****************************************************************************/
+
+typedef struct {
+	gulong parent_state_id;
+} NMDevice6LowpanPrivate;
+
+struct _NMDevice6Lowpan {
+	NMDevice parent;
+	NMDevice6LowpanPrivate _priv;
+};
+
+struct _NMDevice6LowpanClass {
+	NMDeviceClass parent;
+};
+
+G_DEFINE_TYPE (NMDevice6Lowpan, nm_device_6lowpan, NM_TYPE_DEVICE)
+
+#define NM_DEVICE_6LOWPAN_GET_PRIVATE(self) _NM_GET_PRIVATE (self, NMDevice6Lowpan, NM_IS_DEVICE_6LOWPAN)
+
+/*****************************************************************************/
+
+static void
+parent_state_changed (NMDevice *parent,
+                      NMDeviceState new_state,
+                      NMDeviceState old_state,
+                      NMDeviceStateReason reason,
+                      gpointer user_data)
+{
+	NMDevice6Lowpan *self = NM_DEVICE_6LOWPAN (user_data);
+
+	nm_device_set_unmanaged_by_flags (NM_DEVICE (self), NM_UNMANAGED_PARENT, !nm_device_get_managed (parent, FALSE), reason);
+}
+
+static void
+parent_changed_notify (NMDevice *device,
+                       int old_ifindex,
+                       NMDevice *old_parent,
+                       int new_ifindex,
+                       NMDevice *new_parent)
+{
+	NMDevice6Lowpan *self = NM_DEVICE_6LOWPAN (device);
+	NMDevice6LowpanPrivate *priv = NM_DEVICE_6LOWPAN_GET_PRIVATE (self);
+
+	NM_DEVICE_CLASS (nm_device_6lowpan_parent_class)->parent_changed_notify (device, old_ifindex, old_parent, new_ifindex, new_parent);
+
+	/*  note that @self doesn't have to clear @parent_state_id on dispose,
+	 *  because NMDevice's dispose() will unset the parent, which in turn calls
+	 *  parent_changed_notify(). */
+	nm_clear_g_signal_handler (old_parent, &priv->parent_state_id);
+
+	if (new_parent) {
+		priv->parent_state_id = g_signal_connect (new_parent,
+		                                          NM_DEVICE_STATE_CHANGED,
+		                                          G_CALLBACK (parent_state_changed),
+		                                          device);
+
+		/* Set parent-dependent unmanaged flag */
+		nm_device_set_unmanaged_by_flags (device,
+		                                  NM_UNMANAGED_PARENT,
+		                                  !nm_device_get_managed (new_parent, FALSE),
+		                                  NM_DEVICE_STATE_REASON_PARENT_MANAGED_CHANGED);
+	}
+
+	if (new_ifindex > 0) {
+		/* Recheck availability now that the parent has changed */
+		nm_device_queue_recheck_available (device,
+		                                   NM_DEVICE_STATE_REASON_PARENT_CHANGED,
+		                                   NM_DEVICE_STATE_REASON_PARENT_CHANGED);
+	}
+}
+
+static gboolean
+create_and_realize (NMDevice *device,
+                    NMConnection *connection,
+                    NMDevice *parent,
+                    const NMPlatformLink **out_plink,
+                    GError **error)
+{
+	const char *iface = nm_device_get_iface (device);
+	NMPlatformError plerr;
+	NMSetting6Lowpan *s_6lowpan;
+	int parent_ifindex;
+
+	s_6lowpan = nm_connection_get_setting_6lowpan (connection);
+	g_return_val_if_fail (s_6lowpan, FALSE);
+
+	parent_ifindex = parent ? nm_device_get_ifindex (parent) : 0;
+
+	if (parent_ifindex <= 0) {
+		g_set_error (error, NM_DEVICE_ERROR, NM_DEVICE_ERROR_MISSING_DEPENDENCIES,
+		             "6LoWPAN devices can not be created without a parent interface");
+		g_return_val_if_fail (!parent, FALSE);
+		return FALSE;
+	}
+
+	plerr = nm_platform_link_6lowpan_add (nm_device_get_platform (device), iface, parent_ifindex, out_plink);
+	if (plerr != NM_PLATFORM_ERROR_SUCCESS) {
+		g_set_error (error, NM_DEVICE_ERROR, NM_DEVICE_ERROR_CREATION_FAILED,
+		             "Failed to create 6lowpan interface '%s' for '%s': %s",
+		             iface,
+		             nm_connection_get_id (connection),
+		             nm_platform_error_to_string_a (plerr));
+		return FALSE;
+	}
+
+	nm_device_parent_set_ifindex (device, parent_ifindex);
+
+	return TRUE;
+}
+
+static NMDeviceCapabilities
+get_generic_capabilities (NMDevice *dev)
+{
+	return NM_DEVICE_CAP_CARRIER_DETECT | NM_DEVICE_CAP_IS_SOFTWARE;
+}
+
+static void
+link_changed (NMDevice *device,
+	      const NMPlatformLink *pllink)
+{
+	NMDevice6Lowpan *self = NM_DEVICE_6LOWPAN (device);
+	int parent = 0;
+	int ifindex;
+
+	NM_DEVICE_CLASS (nm_device_6lowpan_parent_class)->link_changed (device, pllink);
+
+	ifindex = nm_device_get_ifindex (device);
+	if (!nm_platform_link_6lowpan_get_properties (nm_device_get_platform (device), ifindex, &parent)) {
+		_LOGW (LOGD_DEVICE, "could not get 6lowpan properties");
+		return;
+	}
+
+	nm_device_parent_set_ifindex (device, parent);
+}
+
+static gboolean
+is_available (NMDevice *device, NMDeviceCheckDevAvailableFlags flags)
+{
+	if (!nm_device_parent_get_device (device))
+		return FALSE;
+	return NM_DEVICE_CLASS (nm_device_6lowpan_parent_class)->is_available (device, flags);
+}
+
+static gboolean
+check_connection_compatible (NMDevice *device, NMConnection *connection)
+{
+	NMSetting6Lowpan *s_6lowpan;
+
+	if (!NM_DEVICE_CLASS (nm_device_6lowpan_parent_class)->check_connection_compatible (device, connection))
+		return FALSE;
+
+	s_6lowpan = nm_connection_get_setting_6lowpan (connection);
+	if (!s_6lowpan)
+		return FALSE;
+
+	return TRUE;
+}
+
+static gboolean
+complete_connection (NMDevice *device,
+                     NMConnection *connection,
+                     const char *specific_object,
+                     NMConnection *const*existing_connections,
+                     GError **error)
+{
+	NMSetting6Lowpan *s_6lowpan;
+
+	nm_utils_complete_generic (nm_device_get_platform (device),
+	                           connection,
+	                           NM_SETTING_6LOWPAN_SETTING_NAME,
+	                           existing_connections,
+	                           NULL,
+	                           _("6LOWPAN connection"),
+	                           NULL,
+	                           TRUE);
+
+	s_6lowpan = nm_connection_get_setting_6lowpan (connection);
+	if (!s_6lowpan) {
+		g_set_error_literal (error, NM_DEVICE_ERROR, NM_DEVICE_ERROR_INVALID_CONNECTION,
+		                     "A '6lowpan' setting is required.");
+		return FALSE;
+	}
+
+	/* If there's no 6LoWPAN interface, no parent, and no hardware address in the
+	 * settings, then there's not enough information to complete the setting.
+	 */
+	if (   !nm_setting_6lowpan_get_parent (s_6lowpan)
+	    && !nm_device_match_hwaddr (device, connection, TRUE)) {
+		g_set_error_literal (error, NM_DEVICE_ERROR, NM_DEVICE_ERROR_INVALID_CONNECTION,
+		                     "The '6lowpan' setting had no interface name, parent, or hardware address.");
+		return FALSE;
+	}
+
+	return TRUE;
+}
+
+static void
+update_connection (NMDevice *device, NMConnection *connection)
+{
+	NMSetting6Lowpan *s_6lowpan = nm_connection_get_setting_6lowpan (connection);
+	NMDevice *parent_device;
+	const char *setting_parent, *new_parent;
+
+	if (!s_6lowpan) {
+		s_6lowpan = (NMSetting6Lowpan *) nm_setting_6lowpan_new ();
+		nm_connection_add_setting (connection, (NMSetting *) s_6lowpan);
+	}
+
+	/* Update parent in the connection; default to parent's interface name */
+	parent_device = nm_device_parent_get_device (device);
+	if (parent_device) {
+		new_parent = nm_device_get_iface (parent_device);
+		setting_parent = nm_setting_6lowpan_get_parent (s_6lowpan);
+		if (setting_parent && nm_utils_is_uuid (setting_parent)) {
+			NMConnection *parent_connection;
+
+			/* Don't change a parent specified by UUID if it's still valid */
+			parent_connection = (NMConnection *) nm_settings_get_connection_by_uuid (nm_device_get_settings (device), setting_parent);
+			if (parent_connection && nm_device_check_connection_compatible (parent_device, parent_connection))
+				new_parent = NULL;
+		}
+		if (new_parent)
+			g_object_set (s_6lowpan, NM_SETTING_6LOWPAN_PARENT, new_parent, NULL);
+	} else
+		g_object_set (s_6lowpan, NM_SETTING_6LOWPAN_PARENT, NULL, NULL);
+
+}
+
+static NMActStageReturn
+act_stage1_prepare (NMDevice *dev, NMDeviceStateReason *out_failure_reason)
+{
+	NMActStageReturn ret;
+
+	ret = NM_DEVICE_CLASS (nm_device_6lowpan_parent_class)->act_stage1_prepare (dev, out_failure_reason);
+	if (ret != NM_ACT_STAGE_RETURN_SUCCESS)
+		return ret;
+
+	if (!nm_device_hw_addr_set_cloned (dev, nm_device_get_applied_connection (dev), FALSE))
+		return NM_ACT_STAGE_RETURN_FAILURE;
+	return NM_ACT_STAGE_RETURN_SUCCESS;
+}
+
+/*****************************************************************************/
+
+static void
+nm_device_6lowpan_init (NMDevice6Lowpan *self)
+{
+}
+
+static const NMDBusInterfaceInfoExtended interface_info_device_6lowpan = {
+	.parent = NM_DEFINE_GDBUS_INTERFACE_INFO_INIT (
+		NM_DBUS_INTERFACE_DEVICE_6LOWPAN,
+		.properties = NM_DEFINE_GDBUS_PROPERTY_INFOS (
+			NM_DEFINE_DBUS_PROPERTY_INFO_EXTENDED_READABLE ("HwAddress", "s", NM_DEVICE_HW_ADDRESS),
+			NM_DEFINE_DBUS_PROPERTY_INFO_EXTENDED_READABLE ("Parent", "o", NM_DEVICE_PARENT),
+		),
+	),
+};
+
+static void
+nm_device_6lowpan_class_init (NMDevice6LowpanClass *klass)
+{
+	NMDBusObjectClass *dbus_object_class = NM_DBUS_OBJECT_CLASS (klass);
+	NMDeviceClass *device_class = NM_DEVICE_CLASS (klass);
+
+	NM_DEVICE_CLASS_DECLARE_TYPES (klass, NULL, NM_LINK_TYPE_6LOWPAN)
+
+	dbus_object_class->interface_infos = NM_DBUS_INTERFACE_INFOS (&interface_info_device_6lowpan);
+
+	device_class->act_stage1_prepare = act_stage1_prepare;
+	device_class->check_connection_compatible = check_connection_compatible;
+	device_class->complete_connection = complete_connection;
+	device_class->connection_type = NM_SETTING_6LOWPAN_SETTING_NAME;
+	device_class->create_and_realize = create_and_realize;
+	device_class->get_generic_capabilities = get_generic_capabilities;
+	device_class->get_configured_mtu = nm_device_get_configured_mtu_for_wired;
+	device_class->link_changed = link_changed;
+	device_class->is_available = is_available;
+	device_class->parent_changed_notify = parent_changed_notify;
+	device_class->update_connection = update_connection;
+}
+
+/*****************************************************************************/
+
+#define NM_TYPE_6LOWPAN_DEVICE_FACTORY (nm_6lowpan_device_factory_get_type ())
+#define NM_6LOWPAN_DEVICE_FACTORY(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), NM_TYPE_6LOWPAN_DEVICE_FACTORY, NM6LowpanDeviceFactory))
+
+static NMDevice *
+create_device (NMDeviceFactory *factory,
+               const char *iface,
+               const NMPlatformLink *plink,
+               NMConnection *connection,
+               gboolean *out_ignore)
+{
+	return (NMDevice *) g_object_new (NM_TYPE_DEVICE_6LOWPAN,
+	                                  NM_DEVICE_IFACE, iface,
+	                                  NM_DEVICE_TYPE_DESC, "6LoWPAN",
+	                                  NM_DEVICE_DEVICE_TYPE, NM_DEVICE_TYPE_6LOWPAN,
+	                                  NM_DEVICE_LINK_TYPE, NM_LINK_TYPE_6LOWPAN,
+	                                  NULL);
+}
+
+static const char *
+get_connection_parent (NMDeviceFactory *factory, NMConnection *connection)
+{
+	NMSetting6Lowpan *s_6lowpan;
+
+	g_return_val_if_fail (nm_connection_is_type (connection, NM_SETTING_6LOWPAN_SETTING_NAME), NULL);
+
+	s_6lowpan = nm_connection_get_setting_6lowpan (connection);
+	g_assert (s_6lowpan);
+
+	return nm_setting_6lowpan_get_parent (s_6lowpan);
+}
+
+static char *
+get_connection_iface (NMDeviceFactory *factory,
+                      NMConnection *connection,
+                      const char *parent_iface)
+{
+	NMSetting6Lowpan *s_6lowpan;
+	const char *ifname;
+
+	g_return_val_if_fail (nm_connection_is_type (connection, NM_SETTING_6LOWPAN_SETTING_NAME), NULL);
+
+	s_6lowpan = nm_connection_get_setting_6lowpan (connection);
+	g_assert (s_6lowpan);
+
+	if (!parent_iface)
+		return NULL;
+
+	ifname = nm_connection_get_interface_name (connection);
+	return g_strdup (ifname);
+}
+
+NM_DEVICE_FACTORY_DEFINE_INTERNAL (6LOWPAN, 6Lowpan, 6lowpan,
+	NM_DEVICE_FACTORY_DECLARE_LINK_TYPES (NM_LINK_TYPE_6LOWPAN)
+	NM_DEVICE_FACTORY_DECLARE_SETTING_TYPES (NM_SETTING_6LOWPAN_SETTING_NAME),
+	factory_class->create_device = create_device;
+	factory_class->get_connection_parent = get_connection_parent;
+	factory_class->get_connection_iface = get_connection_iface;
+);
diff --git a/src/devices/nm-device-6lowpan.h b/src/devices/nm-device-6lowpan.h
new file mode 100644
index 0000000000..86edf4af59
--- /dev/null
+++ b/src/devices/nm-device-6lowpan.h
@@ -0,0 +1,37 @@
+/* NetworkManager -- Network link manager
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Copyright 2018 Red Hat, Inc.
+ */
+
+#ifndef __NETWORKMANAGER_DEVICE_6LOWPAN_H__
+#define __NETWORKMANAGER_DEVICE_6LOWPAN_H__
+
+#include "nm-device.h"
+
+#define NM_TYPE_DEVICE_6LOWPAN            (nm_device_6lowpan_get_type ())
+#define NM_DEVICE_6LOWPAN(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), NM_TYPE_DEVICE_6LOWPAN, NMDevice6Lowpan))
+#define NM_DEVICE_6LOWPAN_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass),  NM_TYPE_DEVICE_6LOWPAN, NMDevice6LowpanClass))
+#define NM_IS_DEVICE_6LOWPAN(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), NM_TYPE_DEVICE_6LOWPAN))
+#define NM_IS_DEVICE_6LOWPAN_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass),  NM_TYPE_DEVICE_6LOWPAN))
+#define NM_DEVICE_6LOWPAN_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj),  NM_TYPE_DEVICE_6LOWPAN, NMDevice6LowpanClass))
+
+typedef struct _NMDevice6Lowpan NMDevice6Lowpan;
+typedef struct _NMDevice6LowpanClass NMDevice6LowpanClass;
+
+GType nm_device_6lowpan_get_type (void);
+
+#endif /* __NETWORKMANAGER_DEVICE_6LOWPAN_H__ */
diff --git a/src/devices/nm-device-factory.c b/src/devices/nm-device-factory.c
index ced6b4bef4..30f6aa9910 100644
--- a/src/devices/nm-device-factory.c
+++ b/src/devices/nm-device-factory.c
@@ -417,6 +417,7 @@ nm_device_factory_manager_load_factories (NMDeviceFactoryManagerFactoryFunc call
 		                        callback, user_data); \
 	} G_STMT_END
 
+	_ADD_INTERNAL (nm_6lowpan_device_factory_get_type);
 	_ADD_INTERNAL (nm_bond_device_factory_get_type);
 	_ADD_INTERNAL (nm_bridge_device_factory_get_type);
 	_ADD_INTERNAL (nm_dummy_device_factory_get_type);
diff --git a/src/devices/nm-device.c b/src/devices/nm-device.c
index 023a7676b0..f56370baf6 100644
--- a/src/devices/nm-device.c
+++ b/src/devices/nm-device.c
@@ -1940,6 +1940,8 @@ nm_device_get_route_metric_default (NMDeviceType device_type)
 		return 700;
 	case NM_DEVICE_TYPE_BT:
 		return 750;
+	case NM_DEVICE_TYPE_6LOWPAN:
+		return 775;
 	case NM_DEVICE_TYPE_OVS_BRIDGE:
 	case NM_DEVICE_TYPE_OVS_INTERFACE:
 	case NM_DEVICE_TYPE_OVS_PORT:
diff --git a/src/meson.build b/src/meson.build
index 93cd1e5b63..abc3069a17 100644
--- a/src/meson.build
+++ b/src/meson.build
@@ -93,6 +93,7 @@ libnetwork_manager_base = static_library(
 
 sources = files(
   'devices/nm-acd-manager.c',
+  'devices/nm-device-6lowpan.c',
   'devices/nm-device-bond.c',
   'devices/nm-device-bridge.c',
   'devices/nm-device.c',