mirror of
https://gitlab.freedesktop.org/NetworkManager/NetworkManager.git
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fb191fc282
Currently both bridge.mac-address and ethernet.cloned-mac-address get written to the same MACADDR ifcfg-rh variable; the ethernet property wins if both are present. When one property is set and the connection is saved (and thus reread) both properties are populated with the same value. This is wrong because, even if the properties have the same meaning, the setting plugin should not read something different from what was written. Also consider that after the following steps: $ nmcli con mod c ethernet.cloned-mac-address 00:11:22:33:44:55 $ nmcli con mod c ethernet.cloned-mac-address "" the connection will still have the new mac address set in the bridge.mac-address property, which is certainly unexpected. In general, mapping multiple properties to the same variable is harmful and must be avoided. Therefore, let's use a different variable for bridge.mac-address. This changes behavior, but not so much: - connections that have MACADDR set will behave as before; the only difference will be that the MAC will be present in the wired setting instead of the bridge one; - initscripts compatibility is not relevant because MACADDR for bridges was a NM extension; - if someone creates a new connection and sets bridge.mac-address NM will set the BRIDGE_MACADDR property instead of MACADDR. But this shouldn't be a big concern as bridge.mac-address is documented as deprecated and should not be used for new connections. https://bugzilla.redhat.com/show_bug.cgi?id=1516659
659 lines
19 KiB
C
659 lines
19 KiB
C
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
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/*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301 USA.
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*
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* Copyright 2011 - 2017 Red Hat, Inc.
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*/
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#include "nm-default.h"
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#include <string.h>
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#include <ctype.h>
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#include <stdlib.h>
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#include "nm-setting-bridge.h"
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#include "nm-connection-private.h"
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#include "nm-utils.h"
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#include "nm-utils-private.h"
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/**
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* SECTION:nm-setting-bridge
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* @short_description: Describes connection properties for bridges
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*
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* The #NMSettingBridge object is a #NMSetting subclass that describes properties
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* necessary for bridging connections.
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**/
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G_DEFINE_TYPE_WITH_CODE (NMSettingBridge, nm_setting_bridge, NM_TYPE_SETTING,
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_nm_register_setting (BRIDGE, NM_SETTING_PRIORITY_HW_BASE))
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NM_SETTING_REGISTER_TYPE (NM_TYPE_SETTING_BRIDGE)
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#define NM_SETTING_BRIDGE_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), NM_TYPE_SETTING_BRIDGE, NMSettingBridgePrivate))
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typedef struct {
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char * mac_address;
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gboolean stp;
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guint16 priority;
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guint16 forward_delay;
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guint16 hello_time;
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guint16 max_age;
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guint32 ageing_time;
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guint16 group_forward_mask;
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gboolean multicast_snooping;
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} NMSettingBridgePrivate;
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enum {
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PROP_0,
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PROP_MAC_ADDRESS,
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PROP_STP,
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PROP_PRIORITY,
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PROP_FORWARD_DELAY,
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PROP_HELLO_TIME,
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PROP_MAX_AGE,
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PROP_AGEING_TIME,
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PROP_GROUP_FORWARD_MASK,
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PROP_MULTICAST_SNOOPING,
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LAST_PROP
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};
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/**
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* nm_setting_bridge_new:
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*
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* Creates a new #NMSettingBridge object with default values.
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*
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* Returns: (transfer full): the new empty #NMSettingBridge object
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**/
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NMSetting *
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nm_setting_bridge_new (void)
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{
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return (NMSetting *) g_object_new (NM_TYPE_SETTING_BRIDGE, NULL);
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}
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/**
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* nm_setting_bridge_get_mac_address:
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* @setting: the #NMSettingBridge
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*
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* Returns: the #NMSettingBridge:mac-address property of the setting
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**/
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const char *
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nm_setting_bridge_get_mac_address (NMSettingBridge *setting)
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{
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g_return_val_if_fail (NM_IS_SETTING_BRIDGE (setting), NULL);
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return NM_SETTING_BRIDGE_GET_PRIVATE (setting)->mac_address;
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}
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/**
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* nm_setting_bridge_get_stp:
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* @setting: the #NMSettingBridge
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*
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* Returns: the #NMSettingBridge:stp property of the setting
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**/
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gboolean
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nm_setting_bridge_get_stp (NMSettingBridge *setting)
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{
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g_return_val_if_fail (NM_IS_SETTING_BRIDGE (setting), FALSE);
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return NM_SETTING_BRIDGE_GET_PRIVATE (setting)->stp;
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}
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/**
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* nm_setting_bridge_get_priority:
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* @setting: the #NMSettingBridge
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*
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* Returns: the #NMSettingBridge:priority property of the setting
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**/
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guint16
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nm_setting_bridge_get_priority (NMSettingBridge *setting)
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{
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g_return_val_if_fail (NM_IS_SETTING_BRIDGE (setting), 0);
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return NM_SETTING_BRIDGE_GET_PRIVATE (setting)->priority;
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}
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/**
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* nm_setting_bridge_get_forward_delay:
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* @setting: the #NMSettingBridge
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*
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* Returns: the #NMSettingBridge:forward-delay property of the setting
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**/
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guint16
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nm_setting_bridge_get_forward_delay (NMSettingBridge *setting)
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{
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g_return_val_if_fail (NM_IS_SETTING_BRIDGE (setting), 0);
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return NM_SETTING_BRIDGE_GET_PRIVATE (setting)->forward_delay;
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}
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/**
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* nm_setting_bridge_get_hello_time:
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* @setting: the #NMSettingBridge
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*
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* Returns: the #NMSettingBridge:hello-time property of the setting
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**/
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guint16
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nm_setting_bridge_get_hello_time (NMSettingBridge *setting)
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{
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g_return_val_if_fail (NM_IS_SETTING_BRIDGE (setting), 0);
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return NM_SETTING_BRIDGE_GET_PRIVATE (setting)->hello_time;
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}
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/**
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* nm_setting_bridge_get_max_age:
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* @setting: the #NMSettingBridge
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*
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* Returns: the #NMSettingBridge:max-age property of the setting
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**/
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guint16
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nm_setting_bridge_get_max_age (NMSettingBridge *setting)
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{
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g_return_val_if_fail (NM_IS_SETTING_BRIDGE (setting), 0);
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return NM_SETTING_BRIDGE_GET_PRIVATE (setting)->max_age;
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}
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/**
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* nm_setting_bridge_get_ageing_time:
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* @setting: the #NMSettingBridge
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*
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* Returns: the #NMSettingBridge:ageing-time property of the setting
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**/
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guint
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nm_setting_bridge_get_ageing_time (NMSettingBridge *setting)
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{
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g_return_val_if_fail (NM_IS_SETTING_BRIDGE (setting), 0);
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return NM_SETTING_BRIDGE_GET_PRIVATE (setting)->ageing_time;
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}
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/**
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* nm_setting_bridge_get_group_forward_mask:
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* @setting: the #NMSettingBridge
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*
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* Returns: the #NMSettingBridge:group-forward-mask property of the setting
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*
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* Since: 1.10
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**/
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guint16
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nm_setting_bridge_get_group_forward_mask (NMSettingBridge *setting)
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{
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g_return_val_if_fail (NM_IS_SETTING_BRIDGE (setting), 0);
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return NM_SETTING_BRIDGE_GET_PRIVATE (setting)->group_forward_mask;
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}
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/**
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* nm_setting_bridge_get_multicast_snooping:
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* @setting: the #NMSettingBridge
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*
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* Returns: the #NMSettingBridge:multicast-snooping property of the setting
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*
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* Since: 1.2
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**/
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gboolean
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nm_setting_bridge_get_multicast_snooping (NMSettingBridge *setting)
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{
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g_return_val_if_fail (NM_IS_SETTING_BRIDGE (setting), FALSE);
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return NM_SETTING_BRIDGE_GET_PRIVATE (setting)->multicast_snooping;
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}
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/* IEEE 802.1D-1998 timer values */
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#define BR_MIN_HELLO_TIME 1
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#define BR_MAX_HELLO_TIME 10
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#define BR_MIN_FORWARD_DELAY 2
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#define BR_MAX_FORWARD_DELAY 30
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#define BR_MIN_MAX_AGE 6
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#define BR_MAX_MAX_AGE 40
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/* IEEE 802.1D-1998 Table 7.4 */
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#define BR_MIN_AGEING_TIME 0
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#define BR_MAX_AGEING_TIME 1000000
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static inline gboolean
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check_range (guint32 val,
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guint32 min,
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guint32 max,
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gboolean zero,
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const char *prop,
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GError **error)
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{
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if (zero && val == 0)
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return TRUE;
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if (val < min || val > max) {
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g_set_error (error,
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NM_CONNECTION_ERROR,
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NM_CONNECTION_ERROR_INVALID_PROPERTY,
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_("value '%d' is out of range <%d-%d>"),
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val, min, max);
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g_prefix_error (error, "%s.%s: ", NM_SETTING_BRIDGE_SETTING_NAME, prop);
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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 gboolean
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verify (NMSetting *setting, NMConnection *connection, GError **error)
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{
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NMSettingBridgePrivate *priv = NM_SETTING_BRIDGE_GET_PRIVATE (setting);
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if (priv->mac_address && !nm_utils_hwaddr_valid (priv->mac_address, ETH_ALEN)) {
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g_set_error_literal (error,
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NM_CONNECTION_ERROR,
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NM_CONNECTION_ERROR_INVALID_PROPERTY,
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_("is not a valid MAC address"));
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g_prefix_error (error, "%s.%s: ", NM_SETTING_BRIDGE_SETTING_NAME, NM_SETTING_BRIDGE_MAC_ADDRESS);
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return FALSE;
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}
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if (!check_range (priv->forward_delay,
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BR_MIN_FORWARD_DELAY,
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BR_MAX_FORWARD_DELAY,
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!priv->stp,
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NM_SETTING_BRIDGE_FORWARD_DELAY,
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error))
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return FALSE;
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if (!check_range (priv->hello_time,
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BR_MIN_HELLO_TIME,
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BR_MAX_HELLO_TIME,
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!priv->stp,
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NM_SETTING_BRIDGE_HELLO_TIME,
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error))
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return FALSE;
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if (!check_range (priv->max_age,
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BR_MIN_MAX_AGE,
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BR_MAX_MAX_AGE,
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!priv->stp,
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NM_SETTING_BRIDGE_MAX_AGE,
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error))
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return FALSE;
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if (!check_range (priv->ageing_time,
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BR_MIN_AGEING_TIME,
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BR_MAX_AGEING_TIME,
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!priv->stp,
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NM_SETTING_BRIDGE_AGEING_TIME,
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error))
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return FALSE;
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if (priv->group_forward_mask & 7) {
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g_set_error_literal (error,
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NM_CONNECTION_ERROR,
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NM_CONNECTION_ERROR_INVALID_PROPERTY,
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_("the mask can't contain bits 0 (STP), 1 (MAC) or 2 (LACP)"));
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g_prefix_error (error, "%s.%s: ", NM_SETTING_BRIDGE_SETTING_NAME, NM_SETTING_BRIDGE_GROUP_FORWARD_MASK);
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return FALSE;
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}
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return _nm_connection_verify_required_interface_name (connection, error);
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}
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static void
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nm_setting_bridge_init (NMSettingBridge *setting)
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{
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}
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static void
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finalize (GObject *object)
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{
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NMSettingBridgePrivate *priv = NM_SETTING_BRIDGE_GET_PRIVATE (object);
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g_free (priv->mac_address);
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G_OBJECT_CLASS (nm_setting_bridge_parent_class)->finalize (object);
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}
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static void
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set_property (GObject *object, guint prop_id,
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const GValue *value, GParamSpec *pspec)
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{
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NMSettingBridgePrivate *priv = NM_SETTING_BRIDGE_GET_PRIVATE (object);
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switch (prop_id) {
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case PROP_MAC_ADDRESS:
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g_free (priv->mac_address);
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priv->mac_address = _nm_utils_hwaddr_canonical_or_invalid (g_value_get_string (value),
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ETH_ALEN);
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break;
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case PROP_STP:
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priv->stp = g_value_get_boolean (value);
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break;
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case PROP_PRIORITY:
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priv->priority = (guint16) g_value_get_uint (value);
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break;
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case PROP_FORWARD_DELAY:
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priv->forward_delay = (guint16) g_value_get_uint (value);
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break;
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case PROP_HELLO_TIME:
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priv->hello_time = (guint16) g_value_get_uint (value);
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break;
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case PROP_MAX_AGE:
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priv->max_age = (guint16) g_value_get_uint (value);
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break;
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case PROP_AGEING_TIME:
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priv->ageing_time = g_value_get_uint (value);
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break;
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case PROP_GROUP_FORWARD_MASK:
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priv->group_forward_mask = (guint16) g_value_get_uint (value);
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break;
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case PROP_MULTICAST_SNOOPING:
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priv->multicast_snooping = g_value_get_boolean (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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get_property (GObject *object, guint prop_id,
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GValue *value, GParamSpec *pspec)
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{
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NMSettingBridgePrivate *priv = NM_SETTING_BRIDGE_GET_PRIVATE (object);
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NMSettingBridge *setting = NM_SETTING_BRIDGE (object);
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switch (prop_id) {
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case PROP_MAC_ADDRESS:
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g_value_set_string (value, nm_setting_bridge_get_mac_address (setting));
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break;
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case PROP_STP:
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g_value_set_boolean (value, priv->stp);
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break;
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case PROP_PRIORITY:
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g_value_set_uint (value, priv->priority);
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break;
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case PROP_FORWARD_DELAY:
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g_value_set_uint (value, priv->forward_delay);
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break;
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case PROP_HELLO_TIME:
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g_value_set_uint (value, priv->hello_time);
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break;
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case PROP_MAX_AGE:
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g_value_set_uint (value, priv->max_age);
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break;
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case PROP_AGEING_TIME:
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g_value_set_uint (value, priv->ageing_time);
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break;
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case PROP_GROUP_FORWARD_MASK:
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g_value_set_uint (value, priv->group_forward_mask);
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break;
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case PROP_MULTICAST_SNOOPING:
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g_value_set_boolean (value, priv->multicast_snooping);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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nm_setting_bridge_class_init (NMSettingBridgeClass *setting_class)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (setting_class);
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NMSettingClass *parent_class = NM_SETTING_CLASS (setting_class);
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g_type_class_add_private (setting_class, sizeof (NMSettingBridgePrivate));
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/* virtual methods */
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object_class->set_property = set_property;
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object_class->get_property = get_property;
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object_class->finalize = finalize;
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parent_class->verify = verify;
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/* Properties */
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/**
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* NMSettingBridge:mac-address:
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*
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* If specified, the MAC address of bridge. When creating a new bridge, this
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* MAC address will be set.
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*
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* If this field is left unspecified, the "ethernet.cloned-mac-address" is
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* referred instead to generate the initial MAC address. Note that setting
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* "ethernet.cloned-mac-address" anyway overwrites the MAC address of
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* the bridge later while activating the bridge. Hence, this property
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* is deprecated.
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*
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* Deprecated: 1.12: Use the ethernet.cloned-mac-address property instead.
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**/
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/* ---keyfile---
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* property: mac-address
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* format: usual hex-digits-and-colons notation
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* description: MAC address in traditional hex-digits-and-colons notation,
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* or semicolon separated list of 6 decimal bytes (obsolete)
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* example: mac-address=00:22:68:12:79:A2
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* mac-address=0;34;104;18;121;162;
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* ---end---
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* ---ifcfg-rh---
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* property: mac-address
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* variable: BRIDGE_MACADDR(+)
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* description: MAC address of the bridge. Note that this requires a recent
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* kernel support, originally introduced in 3.15 upstream kernel)
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* BRIDGE_MACADDR for bridges is an NM extension.
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* ---end---
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*/
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g_object_class_install_property
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(object_class, PROP_MAC_ADDRESS,
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g_param_spec_string (NM_SETTING_BRIDGE_MAC_ADDRESS, "", "",
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NULL,
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G_PARAM_READWRITE |
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NM_SETTING_PARAM_INFERRABLE |
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G_PARAM_STATIC_STRINGS));
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_nm_setting_class_transform_property (parent_class, NM_SETTING_BRIDGE_MAC_ADDRESS,
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G_VARIANT_TYPE_BYTESTRING,
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_nm_utils_hwaddr_to_dbus,
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_nm_utils_hwaddr_from_dbus);
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/**
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* NMSettingBridge:stp:
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*
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* Controls whether Spanning Tree Protocol (STP) is enabled for this bridge.
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**/
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/* ---ifcfg-rh---
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* property: stp
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* variable: STP
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* default: no
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* description: Span tree protocol participation.
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* ---end---
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*/
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g_object_class_install_property
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(object_class, PROP_STP,
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g_param_spec_boolean (NM_SETTING_BRIDGE_STP, "", "",
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TRUE,
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G_PARAM_READWRITE |
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G_PARAM_CONSTRUCT |
|
|
NM_SETTING_PARAM_INFERRABLE |
|
|
G_PARAM_STATIC_STRINGS));
|
|
|
|
/**
|
|
* NMSettingBridge:priority:
|
|
*
|
|
* Sets the Spanning Tree Protocol (STP) priority for this bridge. Lower
|
|
* values are "better"; the lowest priority bridge will be elected the root
|
|
* bridge.
|
|
**/
|
|
/* ---ifcfg-rh---
|
|
* property: priority
|
|
* variable: BRIDGING_OPTS: priority=
|
|
* values: 0 - 32768
|
|
* default: 32768
|
|
* description: STP priority.
|
|
* ---end---
|
|
*/
|
|
g_object_class_install_property
|
|
(object_class, PROP_PRIORITY,
|
|
g_param_spec_uint (NM_SETTING_BRIDGE_PRIORITY, "", "",
|
|
0, G_MAXUINT16, 0x8000,
|
|
G_PARAM_READWRITE |
|
|
G_PARAM_CONSTRUCT |
|
|
NM_SETTING_PARAM_INFERRABLE |
|
|
G_PARAM_STATIC_STRINGS));
|
|
|
|
/**
|
|
* NMSettingBridge:forward-delay:
|
|
*
|
|
* The Spanning Tree Protocol (STP) forwarding delay, in seconds.
|
|
**/
|
|
/* ---ifcfg-rh---
|
|
* property: forward-delay
|
|
* variable: DELAY
|
|
* values: 2 - 30
|
|
* default: 15
|
|
* description: STP forwarding delay.
|
|
* ---end---
|
|
*/
|
|
g_object_class_install_property
|
|
(object_class, PROP_FORWARD_DELAY,
|
|
g_param_spec_uint (NM_SETTING_BRIDGE_FORWARD_DELAY, "", "",
|
|
0, BR_MAX_FORWARD_DELAY, 15,
|
|
G_PARAM_READWRITE |
|
|
G_PARAM_CONSTRUCT |
|
|
NM_SETTING_PARAM_INFERRABLE |
|
|
G_PARAM_STATIC_STRINGS));
|
|
|
|
/**
|
|
* NMSettingBridge:hello-time:
|
|
*
|
|
* The Spanning Tree Protocol (STP) hello time, in seconds.
|
|
**/
|
|
/* ---ifcfg-rh---
|
|
* property: hello-time
|
|
* variable: BRIDGING_OPTS: hello_time=
|
|
* values: 1 - 10
|
|
* default: 2
|
|
* description: STP hello time.
|
|
* ---end---
|
|
*/
|
|
g_object_class_install_property
|
|
(object_class, PROP_HELLO_TIME,
|
|
g_param_spec_uint (NM_SETTING_BRIDGE_HELLO_TIME, "", "",
|
|
0, BR_MAX_HELLO_TIME, 2,
|
|
G_PARAM_READWRITE |
|
|
G_PARAM_CONSTRUCT |
|
|
NM_SETTING_PARAM_INFERRABLE |
|
|
G_PARAM_STATIC_STRINGS));
|
|
|
|
/**
|
|
* NMSettingBridge:max-age:
|
|
*
|
|
* The Spanning Tree Protocol (STP) maximum message age, in seconds.
|
|
**/
|
|
/* ---ifcfg-rh---
|
|
* property: max-age
|
|
* variable: BRIDGING_OPTS: max_age=
|
|
* values: 6 - 40
|
|
* default: 20
|
|
* description: STP maximum message age.
|
|
* ---end---
|
|
*/
|
|
g_object_class_install_property
|
|
(object_class, PROP_MAX_AGE,
|
|
g_param_spec_uint (NM_SETTING_BRIDGE_MAX_AGE, "", "",
|
|
0, BR_MAX_MAX_AGE, 20,
|
|
G_PARAM_READWRITE |
|
|
G_PARAM_CONSTRUCT |
|
|
NM_SETTING_PARAM_INFERRABLE |
|
|
G_PARAM_STATIC_STRINGS));
|
|
|
|
/**
|
|
* NMSettingBridge:ageing-time:
|
|
*
|
|
* The Ethernet MAC address aging time, in seconds.
|
|
**/
|
|
/* ---ifcfg-rh---
|
|
* property: ageing-time
|
|
* variable: BRIDGING_OPTS: ageing_time=
|
|
* values: 0 - 1000000
|
|
* default: 300
|
|
* description: Ethernet MAC ageing time.
|
|
* ---end---
|
|
*/
|
|
g_object_class_install_property
|
|
(object_class, PROP_AGEING_TIME,
|
|
g_param_spec_uint (NM_SETTING_BRIDGE_AGEING_TIME, "", "",
|
|
0, BR_MAX_AGEING_TIME, 300,
|
|
G_PARAM_READWRITE |
|
|
G_PARAM_CONSTRUCT |
|
|
NM_SETTING_PARAM_INFERRABLE |
|
|
G_PARAM_STATIC_STRINGS));
|
|
|
|
/**
|
|
* NMSettingBridge:group-forward-mask:
|
|
*
|
|
* A mask of group addresses to forward. Usually, group addresses in
|
|
* the range from 01:80:C2:00:00:00 to 01:80:C2:00:00:0F are not
|
|
* forwarded according to standards. This property is a mask of 16 bits,
|
|
* each corresponding to a group address in that range that must be
|
|
* forwarded. The mask can't have bits 0, 1 or 2 set because they are
|
|
* used for STP, MAC pause frames and LACP.
|
|
*
|
|
* Since: 1.10
|
|
**/
|
|
g_object_class_install_property
|
|
(object_class, PROP_GROUP_FORWARD_MASK,
|
|
g_param_spec_uint (NM_SETTING_BRIDGE_GROUP_FORWARD_MASK, "", "",
|
|
0, 0xFFFF, 0,
|
|
G_PARAM_READWRITE |
|
|
G_PARAM_CONSTRUCT |
|
|
NM_SETTING_PARAM_INFERRABLE |
|
|
G_PARAM_STATIC_STRINGS));
|
|
|
|
/**
|
|
* NMSettingBridge:multicast-snooping:
|
|
*
|
|
* Controls whether IGMP snooping is enabled for this bridge.
|
|
* Note that if snooping was automatically disabled due to hash collisions,
|
|
* the system may refuse to enable the feature until the collisions are
|
|
* resolved.
|
|
*
|
|
* Since: 1.2
|
|
**/
|
|
/* ---ifcfg-rh---
|
|
* property: multicast-snooping
|
|
* variable: BRIDGING_OPTS: multicast_snooping=
|
|
* values: 0 or 1
|
|
* default: 1
|
|
* description: IGMP snooping support.
|
|
* ---end---
|
|
*/
|
|
g_object_class_install_property
|
|
(object_class, PROP_MULTICAST_SNOOPING,
|
|
g_param_spec_boolean (NM_SETTING_BRIDGE_MULTICAST_SNOOPING, "", "",
|
|
TRUE,
|
|
G_PARAM_READWRITE |
|
|
G_PARAM_CONSTRUCT |
|
|
NM_SETTING_PARAM_INFERRABLE |
|
|
G_PARAM_STATIC_STRINGS));
|
|
|
|
/* ---dbus---
|
|
* property: interface-name
|
|
* format: string
|
|
* description: Deprecated in favor of connection.interface-name, but can
|
|
* be used for backward-compatibility with older daemons, to set the
|
|
* bridge's interface name.
|
|
* ---end---
|
|
*/
|
|
_nm_setting_class_add_dbus_only_property (parent_class, "interface-name",
|
|
G_VARIANT_TYPE_STRING,
|
|
_nm_setting_get_deprecated_virtual_interface_name,
|
|
NULL);
|
|
}
|