diff options
Diffstat (limited to 'src/core/devices/nm-device-6lowpan.c')
| -rw-r--r-- | src/core/devices/nm-device-6lowpan.c | 339 |
1 files changed, 339 insertions, 0 deletions
diff --git a/src/core/devices/nm-device-6lowpan.c b/src/core/devices/nm-device-6lowpan.c new file mode 100644 index 00000000..fe116dd4 --- /dev/null +++ b/src/core/devices/nm-device-6lowpan.c @@ -0,0 +1,339 @@ +/* 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 "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;); |