// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2018 Lubomir Rintel <lkundrak@v3.sk>
*/
#include "nm-default.h"
#include "nm-manager.h"
#include "nm-device-wpan.h"
#include <stdlib.h>
#include <sys/types.h>
#include <linux/if.h>
#include "nm-act-request.h"
#include "nm-device-private.h"
#include "nm-ip4-config.h"
#include "platform/nm-platform.h"
#include "nm-device-factory.h"
#include "nm-setting-wpan.h"
#include "nm-core-internal.h"
#include "nm-device-logging.h"
_LOG_DECLARE_SELF(NMDeviceWpan);
/*****************************************************************************/
struct _NMDeviceWpan {
NMDevice parent;
};
struct _NMDeviceWpanClass {
NMDeviceClass parent;
};
G_DEFINE_TYPE (NMDeviceWpan, nm_device_wpan, NM_TYPE_DEVICE)
/*****************************************************************************/
static gboolean
complete_connection (NMDevice *device,
NMConnection *connection,
const char *specific_object,
NMConnection *const*existing_connections,
GError **error)
{
NMSettingWpan *s_wpan;
nm_utils_complete_generic (nm_device_get_platform (device),
connection,
NM_SETTING_WPAN_SETTING_NAME,
existing_connections,
NULL,
_("WPAN connection"),
NULL,
NULL,
TRUE);
s_wpan = NM_SETTING_WPAN (nm_connection_get_setting (connection, NM_TYPE_SETTING_WPAN));
if (!s_wpan) {
g_set_error_literal (error, NM_DEVICE_ERROR, NM_DEVICE_ERROR_INVALID_CONNECTION,
"A 'wpan' setting is required.");
return FALSE;
}
return TRUE;
}
static void
update_connection (NMDevice *device, NMConnection *connection)
{
NMSettingWpan *s_wpan = NM_SETTING_WPAN (nm_connection_get_setting (connection, NM_TYPE_SETTING_WPAN));
if (!s_wpan) {
s_wpan = (NMSettingWpan *) nm_setting_wpan_new ();
nm_connection_add_setting (connection, (NMSetting *) s_wpan);
}
}
static gboolean
check_connection_compatible (NMDevice *device, NMConnection *connection, GError **error)
{
NMSettingWpan *s_wpan;
const char *mac, *hw_addr;
if (!NM_DEVICE_CLASS (nm_device_wpan_parent_class)->check_connection_compatible (device, connection, error))
return FALSE;
s_wpan = NM_SETTING_WPAN (nm_connection_get_setting (connection, NM_TYPE_SETTING_WPAN));
mac = nm_setting_wpan_get_mac_address (s_wpan);
if (mac) {
hw_addr = nm_device_get_hw_address (device);
if (!nm_utils_hwaddr_matches (mac, -1, hw_addr, -1)) {
nm_utils_error_set_literal (error, NM_UTILS_ERROR_CONNECTION_AVAILABLE_TEMPORARY,
"MAC address mismatches");
return FALSE;
}
}
return TRUE;
}
static NMActStageReturn
act_stage1_prepare (NMDevice *device, NMDeviceStateReason *out_failure_reason)
{
NMDeviceWpan *self = NM_DEVICE_WPAN (device);
NMSettingWpan *s_wpan;
NMPlatform *platform;
guint16 pan_id;
guint16 short_address;
gint16 page, channel;
int ifindex;
const guint8 *hwaddr;
gsize hwaddr_len = 0;
const NMPlatformLink *lowpan_plink;
NMDevice *lowpan_device = NULL;
NMActStageReturn ret = NM_ACT_STAGE_RETURN_FAILURE;
platform = nm_device_get_platform (device);
nm_assert (NM_IS_PLATFORM (platform));
ifindex = nm_device_get_ifindex (device);
g_return_val_if_fail (ifindex > 0, NM_ACT_STAGE_RETURN_FAILURE);
s_wpan = nm_device_get_applied_setting (device, NM_TYPE_SETTING_WPAN);
g_return_val_if_fail (s_wpan, NM_ACT_STAGE_RETURN_FAILURE);
hwaddr = nm_platform_link_get_address (platform, ifindex, &hwaddr_len);
if (!hwaddr) {
*out_failure_reason = NM_DEVICE_STATE_REASON_CONFIG_FAILED;
return NM_ACT_STAGE_RETURN_FAILURE;
}
/* As of kernel 4.16, the 6LoWPAN devices layered on top of WPANs
* need to be DOWN as well as the WPAN device itself in order to
* modify the WPAN properties. */
lowpan_plink = nm_platform_link_get_by_address (platform,
NM_LINK_TYPE_6LOWPAN,
hwaddr,
hwaddr_len);
if ( lowpan_plink
&& NM_FLAGS_HAS (lowpan_plink->n_ifi_flags, IFF_UP)) {
lowpan_device = nm_manager_get_device_by_ifindex (NM_MANAGER_GET,
lowpan_plink->ifindex);
}
if (lowpan_device)
nm_device_take_down (lowpan_device, TRUE);
nm_device_take_down (device, TRUE);
pan_id = nm_setting_wpan_get_pan_id (s_wpan);
if (pan_id != G_MAXUINT16) {
if (!nm_platform_wpan_set_pan_id (platform, ifindex, pan_id)) {
_LOGW (LOGD_DEVICE, "unable to set the PAN ID");
goto out;
}
}
short_address = nm_setting_wpan_get_short_address (s_wpan);
if (short_address != G_MAXUINT16) {
if (!nm_platform_wpan_set_short_addr (platform, ifindex, short_address)) {
_LOGW (LOGD_DEVICE, "unable to set the short address");
goto out;
}
}
channel = nm_setting_wpan_get_channel (s_wpan);
if (channel != NM_SETTING_WPAN_CHANNEL_DEFAULT) {
page = nm_setting_wpan_get_page (s_wpan);
if (!nm_platform_wpan_set_channel (platform, ifindex, page, channel)) {
_LOGW (LOGD_DEVICE, "unable to set the channel");
goto out;
}
}
ret = NM_ACT_STAGE_RETURN_SUCCESS;
out:
nm_device_bring_up (device, TRUE, NULL);
if (lowpan_device)
nm_device_bring_up (lowpan_device, TRUE, NULL);
return ret;
}
/*****************************************************************************/
static void
nm_device_wpan_init (NMDeviceWpan *self)
{
}
static const NMDBusInterfaceInfoExtended interface_info_device_wpan = {
.parent = NM_DEFINE_GDBUS_INTERFACE_INFO_INIT (
NM_DBUS_INTERFACE_DEVICE_WPAN,
.properties = NM_DEFINE_GDBUS_PROPERTY_INFOS (
NM_DEFINE_DBUS_PROPERTY_INFO_EXTENDED_READABLE ("HwAddress", "s", NM_DEVICE_HW_ADDRESS),
),
),
};
static void
nm_device_wpan_class_init (NMDeviceWpanClass *klass)
{
NMDeviceClass *device_class = NM_DEVICE_CLASS (klass);
NMDBusObjectClass *dbus_object_class = NM_DBUS_OBJECT_CLASS (klass);
dbus_object_class->interface_infos = NM_DBUS_INTERFACE_INFOS (&interface_info_device_wpan);
device_class->connection_type_supported = NM_SETTING_WPAN_SETTING_NAME;
device_class->connection_type_check_compatible = NM_SETTING_WPAN_SETTING_NAME;
device_class->link_types = NM_DEVICE_DEFINE_LINK_TYPES (NM_LINK_TYPE_WPAN);
device_class->complete_connection = complete_connection;
device_class->check_connection_compatible = check_connection_compatible;
device_class->update_connection = update_connection;
device_class->act_stage1_prepare = act_stage1_prepare;
}
/*****************************************************************************/
#define NM_TYPE_WPAN_DEVICE_FACTORY (nm_wpan_device_factory_get_type ())
#define NM_WPAN_DEVICE_FACTORY(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), NM_TYPE_WPAN_DEVICE_FACTORY, NMWpanDeviceFactory))
static NMDevice *
create_device (NMDeviceFactory *factory,
const char *iface,
const NMPlatformLink *plink,
NMConnection *connection,
gboolean *out_ignore)
{
return (NMDevice *) g_object_new (NM_TYPE_DEVICE_WPAN,
NM_DEVICE_IFACE, iface,
NM_DEVICE_TYPE_DESC, "WPAN",
NM_DEVICE_DEVICE_TYPE, NM_DEVICE_TYPE_WPAN,
NM_DEVICE_LINK_TYPE, NM_LINK_TYPE_WPAN,
NULL);
}
NM_DEVICE_FACTORY_DEFINE_INTERNAL (WPAN, Wpan, wpan,
NM_DEVICE_FACTORY_DECLARE_LINK_TYPES (NM_LINK_TYPE_WPAN)
NM_DEVICE_FACTORY_DECLARE_SETTING_TYPES (NM_SETTING_WPAN_SETTING_NAME),
factory_class->create_device = create_device;
);