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-rw-r--r--src/devices/nm-device-tun.c294
1 files changed, 294 insertions, 0 deletions
diff --git a/src/devices/nm-device-tun.c b/src/devices/nm-device-tun.c
new file mode 100644
index 000000000..d52228f99
--- /dev/null
+++ b/src/devices/nm-device-tun.c
@@ -0,0 +1,294 @@
+/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
+/* 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 2013 Red Hat, Inc.
+ */
+
+#include "config.h"
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "nm-device-tun.h"
+#include "nm-device-private.h"
+#include "nm-dbus-manager.h"
+#include "nm-logging.h"
+#include "nm-platform.h"
+
+#include "nm-device-tun-glue.h"
+
+G_DEFINE_TYPE (NMDeviceTun, nm_device_tun, NM_TYPE_DEVICE_GENERIC)
+
+#define NM_DEVICE_TUN_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), NM_TYPE_DEVICE_TUN, NMDeviceTunPrivate))
+
+typedef struct {
+ NMPlatformTunProperties props;
+ const char *mode;
+ guint delay_tun_get_properties_id;
+} NMDeviceTunPrivate;
+
+enum {
+ PROP_0,
+ PROP_OWNER,
+ PROP_GROUP,
+ PROP_FLAGS,
+ PROP_MODE,
+ PROP_NO_PI,
+ PROP_VNET_HDR,
+ PROP_MULTI_QUEUE,
+
+ LAST_PROP
+};
+
+static void
+reload_tun_properties (NMDeviceTun *device)
+{
+ NMDeviceTunPrivate *priv = NM_DEVICE_TUN_GET_PRIVATE (device);
+ GObject *object = G_OBJECT (device);
+ NMPlatformTunProperties props;
+
+ if (!nm_platform_tun_get_properties (nm_device_get_ifindex (NM_DEVICE (device)), &props)) {
+ nm_log_warn (LOGD_HW, "(%s): could not read tun properties",
+ nm_device_get_iface (NM_DEVICE (device)));
+ return;
+ }
+
+ g_object_freeze_notify (object);
+
+ if (priv->props.owner != props.owner)
+ g_object_notify (object, NM_DEVICE_TUN_OWNER);
+ if (priv->props.group != props.group)
+ g_object_notify (object, NM_DEVICE_TUN_GROUP);
+ if (priv->props.no_pi != props.no_pi)
+ g_object_notify (object, NM_DEVICE_TUN_NO_PI);
+ if (priv->props.vnet_hdr != props.vnet_hdr)
+ g_object_notify (object, NM_DEVICE_TUN_VNET_HDR);
+ if (priv->props.multi_queue != props.multi_queue)
+ g_object_notify (object, NM_DEVICE_TUN_MULTI_QUEUE);
+
+ memcpy (&priv->props, &props, sizeof (NMPlatformTunProperties));
+
+ g_object_thaw_notify (object);
+}
+
+static void
+link_changed (NMDevice *device, NMPlatformLink *info)
+{
+ NM_DEVICE_CLASS (nm_device_tun_parent_class)->link_changed (device, info);
+
+ reload_tun_properties (NM_DEVICE_TUN (device));
+}
+
+static gboolean
+delay_tun_get_properties_cb (gpointer user_data)
+{
+ NMDeviceTun *self = user_data;
+ NMDeviceTunPrivate *priv = NM_DEVICE_TUN_GET_PRIVATE (self);
+
+ priv->delay_tun_get_properties_id = 0;
+
+ reload_tun_properties (self);
+
+ return G_SOURCE_REMOVE;
+}
+
+/**************************************************************/
+
+NMDevice *
+nm_device_tun_new (NMPlatformLink *platform_device)
+{
+ const char *mode = NULL;
+
+ g_return_val_if_fail (platform_device != NULL, NULL);
+
+ if (platform_device->type == NM_LINK_TYPE_TUN)
+ mode = "tun";
+ else if (platform_device->type == NM_LINK_TYPE_TAP)
+ mode = "tap";
+ g_return_val_if_fail (mode != NULL, NULL);
+
+ return (NMDevice *) g_object_new (NM_TYPE_DEVICE_TUN,
+ NM_DEVICE_PLATFORM_DEVICE, platform_device,
+ NM_DEVICE_TYPE_DESC, "Tun",
+ NM_DEVICE_DEVICE_TYPE, NM_DEVICE_TYPE_GENERIC,
+ NM_DEVICE_TUN_MODE, mode,
+ NULL);
+}
+
+static void
+nm_device_tun_init (NMDeviceTun *self)
+{
+}
+
+static void
+constructed (GObject *object)
+{
+ gboolean properties_read;
+ NMDeviceTunPrivate *priv = NM_DEVICE_TUN_GET_PRIVATE (object);
+
+ properties_read = nm_platform_tun_get_properties (nm_device_get_ifindex (NM_DEVICE (object)), &priv->props);
+
+ G_OBJECT_CLASS (nm_device_tun_parent_class)->constructed (object);
+
+ if (!properties_read) {
+ /* Error reading the tun properties. Maybe this was due to a race. Try again a bit later. */
+ nm_log_dbg (LOGD_HW, "(%s): could not read tun properties (retry)",
+ nm_device_get_iface (NM_DEVICE (object)));
+ priv->delay_tun_get_properties_id = g_timeout_add_seconds (1, delay_tun_get_properties_cb, object);
+ }
+}
+
+static void
+dispose (GObject *object)
+{
+ NMDeviceTunPrivate *priv = NM_DEVICE_TUN_GET_PRIVATE (object);
+
+ if (priv->delay_tun_get_properties_id) {
+ g_source_remove (priv->delay_tun_get_properties_id);
+ priv->delay_tun_get_properties_id = 0;
+ }
+
+ G_OBJECT_CLASS (nm_device_tun_parent_class)->dispose (object);
+}
+
+static void
+get_property (GObject *object, guint prop_id,
+ GValue *value, GParamSpec *pspec)
+{
+ NMDeviceTun *self = NM_DEVICE_TUN (object);
+ NMDeviceTunPrivate *priv = NM_DEVICE_TUN_GET_PRIVATE (self);
+
+ switch (prop_id) {
+ case PROP_OWNER:
+ g_value_set_uint (value, priv->props.owner);
+ break;
+ case PROP_GROUP:
+ g_value_set_uint (value, priv->props.group);
+ break;
+ case PROP_MODE:
+ g_value_set_string (value, priv->mode);
+ break;
+ case PROP_NO_PI:
+ g_value_set_boolean (value, priv->props.no_pi);
+ break;
+ case PROP_VNET_HDR:
+ g_value_set_boolean (value, priv->props.vnet_hdr);
+ break;
+ case PROP_MULTI_QUEUE:
+ g_value_set_boolean (value, priv->props.multi_queue);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+set_property (GObject *object, guint prop_id,
+ const GValue *value, GParamSpec *pspec)
+{
+ NMDeviceTun *self = NM_DEVICE_TUN (object);
+ NMDeviceTunPrivate *priv = NM_DEVICE_TUN_GET_PRIVATE (self);
+ const char *str;
+
+ switch (prop_id) {
+ case PROP_MODE:
+ /* construct-only */
+ str = g_value_get_string (value);
+
+ /* mode is G_PARAM_STATIC_STRINGS */
+ if (g_strcmp0 (str, "tun") == 0)
+ priv->mode = "tun";
+ else if (g_strcmp0 (str, "tap") == 0)
+ priv->mode = "tap";
+ else
+ g_return_if_fail (FALSE);
+ break;
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+}
+
+static void
+nm_device_tun_class_init (NMDeviceTunClass *klass)
+{
+ GObjectClass *object_class = G_OBJECT_CLASS (klass);
+ NMDeviceClass *device_class = NM_DEVICE_CLASS (klass);
+
+ g_type_class_add_private (klass, sizeof (NMDeviceTunPrivate));
+
+ object_class->constructed = constructed;
+ object_class->get_property = get_property;
+ object_class->set_property = set_property;
+ object_class->dispose = dispose;
+
+ device_class->link_changed = link_changed;
+
+ /* properties */
+ g_object_class_install_property
+ (object_class, PROP_OWNER,
+ g_param_spec_int64 (NM_DEVICE_TUN_OWNER,
+ "Owner",
+ "Owner",
+ -1, G_MAXUINT32, -1,
+ G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_property
+ (object_class, PROP_GROUP,
+ g_param_spec_int64 (NM_DEVICE_TUN_GROUP,
+ "Group",
+ "Group",
+ -1, G_MAXUINT32, -1,
+ G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_property
+ (object_class, PROP_MODE,
+ g_param_spec_string (NM_DEVICE_TUN_MODE,
+ "Mode",
+ "Mode",
+ "tun",
+ G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_property
+ (object_class, PROP_NO_PI,
+ g_param_spec_boolean (NM_DEVICE_TUN_NO_PI,
+ "No Protocol Info",
+ "No Protocol Info",
+ FALSE,
+ G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_property
+ (object_class, PROP_VNET_HDR,
+ g_param_spec_boolean (NM_DEVICE_TUN_VNET_HDR,
+ "Virtio networking header",
+ "Virtio networking header",
+ FALSE,
+ G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
+
+ g_object_class_install_property
+ (object_class, PROP_MULTI_QUEUE,
+ g_param_spec_boolean (NM_DEVICE_TUN_MULTI_QUEUE,
+ "Multi-queue",
+ "Multi-queue",
+ FALSE,
+ G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
+
+ nm_dbus_manager_register_exported_type (nm_dbus_manager_get (),
+ G_TYPE_FROM_CLASS (klass),
+ &dbus_glib_nm_device_tun_object_info);
+}
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