/* -*- 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 #include #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-factory.h" #include "nm-device-tun-glue.h" #include "nm-device-logging.h" _LOG_DECLARE_SELF(NMDeviceTun); 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 *self) { NMDeviceTunPrivate *priv = NM_DEVICE_TUN_GET_PRIVATE (self); GObject *object = G_OBJECT (self); NMPlatformTunProperties props; if (!nm_platform_tun_get_properties (NM_PLATFORM_GET, nm_device_get_ifindex (NM_DEVICE (self)), &props)) { _LOGD (LOGD_HW, "could not read tun properties"); 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; } /**************************************************************/ static void nm_device_tun_init (NMDeviceTun *self) { } static void constructed (GObject *object) { NMDeviceTun *self = NM_DEVICE_TUN (object); gboolean properties_read; NMDeviceTunPrivate *priv = NM_DEVICE_TUN_GET_PRIVATE (self); properties_read = nm_platform_tun_get_properties (NM_PLATFORM_GET, nm_device_get_ifindex (NM_DEVICE (self)), &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. */ _LOGD (LOGD_HW, "could not read tun properties (retry)"); priv->delay_tun_get_properties_id = g_timeout_add_seconds (1, delay_tun_get_properties_cb, self); } } 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_int64 (value, priv->props.owner); break; case PROP_GROUP: g_value_set_int64 (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, "", "", -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, "", "", -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, "", "", "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, "", "", 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, "", "", 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, "", "", 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); } /*************************************************************/ #define NM_TYPE_TUN_FACTORY (nm_tun_factory_get_type ()) #define NM_TUN_FACTORY(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), NM_TYPE_TUN_FACTORY, NMTunFactory)) static NMDevice * new_link (NMDeviceFactory *factory, NMPlatformLink *plink, gboolean *out_ignore, GError **error) { const char *mode = NULL; if (plink->type == NM_LINK_TYPE_TUN) mode = "tun"; else if (plink->type == NM_LINK_TYPE_TAP) mode = "tap"; else { g_warn_if_reached (); mode = "unknown"; } return (NMDevice *) g_object_new (NM_TYPE_DEVICE_TUN, NM_DEVICE_PLATFORM_DEVICE, plink, NM_DEVICE_TYPE_DESC, "Tun", NM_DEVICE_DEVICE_TYPE, NM_DEVICE_TYPE_GENERIC, NM_DEVICE_TUN_MODE, mode, NULL); } NM_DEVICE_FACTORY_DEFINE_INTERNAL (TUN, Tun, tun, NM_DEVICE_FACTORY_DECLARE_LINK_TYPES (NM_LINK_TYPE_TUN, NM_LINK_TYPE_TAP), factory_iface->new_link = new_link; )