/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2018 Red Hat, Inc.
*/
#include "src/core/nm-default-daemon.h"
#include "nm-device-6lowpan.h"
#include "nm-device-private.h"
#include "settings/nm-settings.h"
#include "libnm-platform/nm-platform.h"
#include "nm-device-factory.h"
#include "nm-setting-6lowpan.h"
#include "nm-utils.h"
#define _NMLOG_DEVICE_TYPE NMDevice6Lowpan
#include "nm-device-logging.h"
/*****************************************************************************/
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, NMDevice)
/*****************************************************************************/
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);
NMSetting6Lowpan *s_6lowpan;
int parent_ifindex;
int r;
s_6lowpan = NM_SETTING_6LOWPAN(nm_connection_get_setting(connection, NM_TYPE_SETTING_6LOWPAN));
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;
}
r = nm_platform_link_6lowpan_add(nm_device_get_platform(device),
iface,
parent_ifindex,
out_plink);
if (r < 0) {
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_strerror(r));
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
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,
NULL,
TRUE);
s_6lowpan = NM_SETTING_6LOWPAN(nm_connection_get_setting(connection, NM_TYPE_SETTING_6LOWPAN));
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_parent_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_SETTING_6LOWPAN(nm_connection_get_setting(connection, NM_TYPE_SETTING_6LOWPAN));
if (!s_6lowpan) {
s_6lowpan = (NMSetting6Lowpan *) nm_setting_6lowpan_new();
nm_connection_add_setting(connection, (NMSetting *) s_6lowpan);
}
g_object_set(
s_6lowpan,
NM_SETTING_6LOWPAN_PARENT,
nm_device_parent_find_for_connection(device, nm_setting_6lowpan_get_parent(s_6lowpan)),
NULL);
}
/*****************************************************************************/
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);
dbus_object_class->interface_infos = NM_DBUS_INTERFACE_INFOS(&interface_info_device_6lowpan);
device_class->connection_type_supported = NM_SETTING_6LOWPAN_SETTING_NAME;
device_class->connection_type_check_compatible = NM_SETTING_6LOWPAN_SETTING_NAME;
device_class->link_types = NM_DEVICE_DEFINE_LINK_TYPES(NM_LINK_TYPE_6LOWPAN);
device_class->act_stage1_prepare_set_hwaddr_ethernet = TRUE;
device_class->complete_connection = complete_connection;
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 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_SETTING_6LOWPAN(nm_connection_get_setting(connection, NM_TYPE_SETTING_6LOWPAN));
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_SETTING_6LOWPAN(nm_connection_get_setting(connection, NM_TYPE_SETTING_6LOWPAN));
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;);