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