diff options
Diffstat (limited to 'src/devices/nm-device-tun.c')
| -rw-r--r-- | src/devices/nm-device-tun.c | 294 |
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 00000000..d52228f9 --- /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); +} |