// SPDX-License-Identifier: GPL-2.0+ /* NetworkManager -- Network link manager * * Copyright 2018 Red Hat, Inc. */ #include "nm-default.h" #include "nm-device-6lowpan.h" #include "nm-device-private.h" #include "settings/nm-settings.h" #include "platform/nm-platform.h" #include "nm-device-factory.h" #include "nm-setting-6lowpan.h" #include "nm-utils.h" #include "nm-device-logging.h" _LOG_DECLARE_SELF(NMDevice6Lowpan); /*****************************************************************************/ 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) /*****************************************************************************/ 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 (NMDevice *) 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; );