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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
* Copyright (C) 2022 Red Hat, Inc.
*/
#include "libnm-core-impl/nm-default-libnm-core.h"
#include "nm-setting-loopback.h"
#include "nm-connection-private.h"
#include "nm-setting-connection.h"
#include "nm-setting-private.h"
/**
* SECTION:nm-setting-loopback
* @short_description: Describes connection properties for loopback interfaces
*
* The #NMSettingLoopback object is a #NMSetting subclass that describes properties
* necessary for connection to loopback devices
**/
/*****************************************************************************/
NM_GOBJECT_PROPERTIES_DEFINE(NMSettingLoopback, PROP_MTU, );
typedef struct {
guint32 mtu;
} NMSettingLoopbackPrivate;
/**
* NMSettingLoopback:
*
* Loopback Link Settings
*
* Since: 1.42
*/
struct _NMSettingLoopback {
NMSetting parent;
NMSettingLoopbackPrivate _priv;
};
struct _NMSettingLoopbackClass {
NMSettingClass parent;
};
#define NM_SETTING_LOOPBACK_GET_PRIVATE(self) \
_NM_GET_PRIVATE(self, NMSettingLoopback, NM_IS_SETTING_LOOPBACK)
G_DEFINE_TYPE(NMSettingLoopback, nm_setting_loopback, NM_TYPE_SETTING)
/*****************************************************************************/
/**
* nm_setting_loopback_get_mtu:
* @setting: the #NMSettingLoopback
*
* Returns: the #NMSettingLoopback:mtu property of the setting
*
* Since: 1.42
**/
guint32
nm_setting_loopback_get_mtu(NMSettingLoopback *setting)
{
g_return_val_if_fail(NM_IS_SETTING_LOOPBACK(setting), 0);
return NM_SETTING_LOOPBACK_GET_PRIVATE(setting)->mtu;
}
static gboolean
verify(NMSetting *setting, NMConnection *connection, GError **error)
{
if (connection) {
NMSettingIPConfig *s_ip4;
NMSettingIPConfig *s_ip6;
NMSettingConnection *s_con;
const char *method;
if ((s_ip4 = nm_connection_get_setting_ip4_config(connection))) {
if ((method = nm_setting_ip_config_get_method(s_ip4))
&& !NM_IN_STRSET(method,
NM_SETTING_IP4_CONFIG_METHOD_AUTO,
NM_SETTING_IP4_CONFIG_METHOD_MANUAL)) {
g_set_error(error,
NM_CONNECTION_ERROR,
NM_CONNECTION_ERROR_INVALID_PROPERTY,
_("ipv4 method \"%s\" is not supported for loopback"),
method);
g_prefix_error(error,
"%s.%s: ",
NM_SETTING_IP4_CONFIG_SETTING_NAME,
NM_SETTING_IP_CONFIG_METHOD);
return FALSE;
}
if (!NM_IN_SET(nm_setting_ip4_config_get_link_local(NM_SETTING_IP4_CONFIG(s_ip4)),
NM_SETTING_IP4_LL_DEFAULT,
NM_SETTING_IP4_LL_AUTO,
NM_SETTING_IP4_LL_DISABLED)) {
g_set_error(error,
NM_CONNECTION_ERROR,
NM_CONNECTION_ERROR_INVALID_PROPERTY,
_("ipv4.link-local cannot be enabled for loopback"));
g_prefix_error(error,
"%s.%s: ",
NM_SETTING_IP4_CONFIG_SETTING_NAME,
NM_SETTING_IP4_CONFIG_LINK_LOCAL);
return FALSE;
}
}
if ((s_ip6 = nm_connection_get_setting_ip6_config(connection))) {
if ((method = nm_setting_ip_config_get_method(s_ip6))
&& !NM_IN_STRSET(method,
NM_SETTING_IP6_CONFIG_METHOD_AUTO,
NM_SETTING_IP6_CONFIG_METHOD_MANUAL)) {
g_set_error(error,
NM_CONNECTION_ERROR,
NM_CONNECTION_ERROR_INVALID_PROPERTY,
_("ipv6 method \"%s\" is not supported for loopback"),
method);
g_prefix_error(error,
"%s.%s: ",
NM_SETTING_IP6_CONFIG_SETTING_NAME,
NM_SETTING_IP_CONFIG_METHOD);
return FALSE;
}
}
if ((s_con = nm_connection_get_setting_connection(connection))) {
if (nm_setting_connection_get_slave_type(s_con)
|| nm_setting_connection_get_master(s_con)) {
g_set_error(error,
NM_CONNECTION_ERROR,
NM_CONNECTION_ERROR_INVALID_PROPERTY,
_("a loopback profile cannot be a port"));
g_prefix_error(error,
"%s.%s: ",
NM_SETTING_CONNECTION_SETTING_NAME,
nm_setting_connection_get_slave_type(s_con)
? NM_SETTING_CONNECTION_SLAVE_TYPE
: NM_SETTING_CONNECTION_CONTROLLER);
return FALSE;
}
}
}
return TRUE;
}
/*****************************************************************************/
static void
nm_setting_loopback_init(NMSettingLoopback *setting)
{}
/**
* nm_setting_loopback_new:
*
* Creates a new #NMSettingLoopback object with default values.
*
* Returns: (transfer full): the new empty #NMSettingLoopback object
*
* Since: 1.42
**/
NMSetting *
nm_setting_loopback_new(void)
{
return g_object_new(NM_TYPE_SETTING_LOOPBACK, NULL);
}
static void
nm_setting_loopback_class_init(NMSettingLoopbackClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS(klass);
NMSettingClass *setting_class = NM_SETTING_CLASS(klass);
GArray *properties_override = _nm_sett_info_property_override_create_array();
object_class->get_property = _nm_setting_property_get_property_direct;
object_class->set_property = _nm_setting_property_set_property_direct;
setting_class->verify = verify;
/**
* NMSettingLoopback:mtu:
*
* If non-zero, only transmit packets of the specified size or smaller,
* breaking larger packets up into multiple Ethernet frames.
*
* Since: 1.42
**/
/* ---ifcfg-rh---
* property: mtu
* variable: MTU
* description: MTU of the interface.
* ---end---
*/
_nm_setting_property_define_direct_uint32(properties_override,
obj_properties,
NM_SETTING_LOOPBACK_MTU,
PROP_MTU,
0,
G_MAXUINT32,
0,
NM_SETTING_PARAM_FUZZY_IGNORE,
NMSettingLoopback,
_priv.mtu);
g_object_class_install_properties(object_class, _PROPERTY_ENUMS_LAST, obj_properties);
_nm_setting_class_commit(setting_class,
NM_META_SETTING_TYPE_LOOPBACK,
NULL,
properties_override,
0);
}
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