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/* -*- 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 <errno.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <linux/sockios.h>
#include <sys/ioctl.h>
#include "nm-device-veth.h"
#include "nm-device-private.h"
#include "nm-default.h"
#include "nm-manager.h"
#include "nm-platform.h"
#include "nm-device-factory.h"
#include "nmdbus-device-veth.h"
#include "nm-device-logging.h"
_LOG_DECLARE_SELF(NMDeviceVeth);
G_DEFINE_TYPE (NMDeviceVeth, nm_device_veth, NM_TYPE_DEVICE_ETHERNET)
#define NM_DEVICE_VETH_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), NM_TYPE_DEVICE_VETH, NMDeviceVethPrivate))
typedef struct {
NMDevice *peer;
gboolean ever_had_peer;
} NMDeviceVethPrivate;
enum {
PROP_0,
PROP_PEER,
LAST_PROP
};
/**************************************************************/
static void
set_peer (NMDeviceVeth *self, NMDevice *peer)
{
NMDeviceVethPrivate *priv = NM_DEVICE_VETH_GET_PRIVATE (self);
if (!priv->peer) {
priv->ever_had_peer = TRUE;
priv->peer = peer;
g_object_add_weak_pointer (G_OBJECT (peer), (gpointer *) &priv->peer);
g_object_notify (G_OBJECT (self), NM_DEVICE_VETH_PEER);
}
}
static NMDevice *
get_peer (NMDeviceVeth *self)
{
NMDeviceVethPrivate *priv = NM_DEVICE_VETH_GET_PRIVATE (self);
NMDevice *device = NM_DEVICE (self), *peer = NULL;
NMPlatformVethProperties props;
if (priv->ever_had_peer)
return priv->peer;
if (!nm_platform_veth_get_properties (NM_PLATFORM_GET, nm_device_get_ifindex (device), &props)) {
_LOGW (LOGD_HW, "could not read veth properties");
return NULL;
}
peer = nm_manager_get_device_by_ifindex (nm_manager_get (), props.peer);
if (peer && NM_IS_DEVICE_VETH (peer)) {
set_peer (self, peer);
set_peer (NM_DEVICE_VETH (peer), device);
}
return priv->peer;
}
static gboolean
can_unmanaged_external_down (NMDevice *self)
{
/* Unless running in a container, an udev rule causes these to be
* unmanaged. If there's no udev then we're probably in a container
* and should IFF_UP and configure the veth ourselves even if we
* didn't create it. */
return FALSE;
}
/**************************************************************/
static void
nm_device_veth_init (NMDeviceVeth *self)
{
}
static void
dispose (GObject *object)
{
NMDeviceVeth *self = NM_DEVICE_VETH (object);
NMDeviceVethPrivate *priv = NM_DEVICE_VETH_GET_PRIVATE (self);
if (priv->peer) {
g_object_remove_weak_pointer (G_OBJECT (priv->peer), (gpointer *) &priv->peer);
priv->peer = NULL;
}
G_OBJECT_CLASS (nm_device_veth_parent_class)->dispose (object);
}
static void
get_property (GObject *object, guint prop_id,
GValue *value, GParamSpec *pspec)
{
NMDeviceVeth *self = NM_DEVICE_VETH (object);
NMDevice *peer;
switch (prop_id) {
case PROP_PEER:
peer = get_peer (self);
nm_utils_g_value_set_object_path (value, peer);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
nm_device_veth_class_init (NMDeviceVethClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
NMDeviceClass *device_class = NM_DEVICE_CLASS (klass);
g_type_class_add_private (klass, sizeof (NMDeviceVethPrivate));
NM_DEVICE_CLASS_DECLARE_TYPES(klass, NULL, NM_LINK_TYPE_VETH)
object_class->get_property = get_property;
object_class->dispose = dispose;
device_class->can_unmanaged_external_down = can_unmanaged_external_down;
/* properties */
g_object_class_install_property
(object_class, PROP_PEER,
g_param_spec_string (NM_DEVICE_VETH_PEER, "", "",
NULL,
G_PARAM_READABLE |
G_PARAM_STATIC_STRINGS));
nm_exported_object_class_add_interface (NM_EXPORTED_OBJECT_CLASS (klass),
NMDBUS_TYPE_DEVICE_VETH_SKELETON,
NULL);
}
/*************************************************************/
#define NM_TYPE_VETH_FACTORY (nm_veth_factory_get_type ())
#define NM_VETH_FACTORY(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), NM_TYPE_VETH_FACTORY, NMVethFactory))
static NMDevice *
create_device (NMDeviceFactory *factory,
const char *iface,
NMPlatformLink *plink,
NMConnection *connection,
gboolean *out_ignore)
{
return (NMDevice *) g_object_new (NM_TYPE_DEVICE_VETH,
NM_DEVICE_IFACE, iface,
NM_DEVICE_TYPE_DESC, "Veth",
NM_DEVICE_DEVICE_TYPE, NM_DEVICE_TYPE_ETHERNET,
NULL);
}
NM_DEVICE_FACTORY_DEFINE_INTERNAL (VETH, Veth, veth,
NM_DEVICE_FACTORY_DECLARE_LINK_TYPES (NM_LINK_TYPE_VETH),
factory_iface->create_device = create_device;
)
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