mirror of
https://gitlab.freedesktop.org/NetworkManager/NetworkManager.git
synced 2026-01-06 07:20:14 +01:00
b524d879f0
Change the output of nm_platform_error_to_string() to print the numeric value. Also, accept a string buffer instead of using an alloca() allocated buffer. There is still a macro to provide the previous functionality, but it was ill-suited to call from inside a loop.
570 lines
18 KiB
C
570 lines
18 KiB
C
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
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/* NetworkManager -- Network link manager
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program 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
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Copyright 2011 - 2015 Red Hat, Inc.
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*/
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#include "nm-default.h"
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#include "nm-device-bridge.h"
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#include <stdlib.h>
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#include "NetworkManagerUtils.h"
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#include "nm-device-private.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-core-internal.h"
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#include "introspection/org.freedesktop.NetworkManager.Device.Bridge.h"
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#include "nm-device-logging.h"
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_LOG_DECLARE_SELF(NMDeviceBridge);
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/*****************************************************************************/
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struct _NMDeviceBridge {
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NMDevice parent;
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};
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struct _NMDeviceBridgeClass {
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NMDeviceClass parent;
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};
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G_DEFINE_TYPE (NMDeviceBridge, nm_device_bridge, NM_TYPE_DEVICE)
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/*****************************************************************************/
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const NMBtVTableNetworkServer *nm_bt_vtable_network_server = NULL;
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/*****************************************************************************/
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static NMDeviceCapabilities
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get_generic_capabilities (NMDevice *dev)
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{
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return NM_DEVICE_CAP_CARRIER_DETECT | NM_DEVICE_CAP_IS_SOFTWARE;
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}
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static gboolean
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check_connection_available (NMDevice *device,
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NMConnection *connection,
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NMDeviceCheckConAvailableFlags flags,
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const char *specific_object)
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{
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NMSettingBluetooth *s_bt;
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if (!NM_DEVICE_CLASS (nm_device_bridge_parent_class)->check_connection_available (device, connection, flags, specific_object))
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return FALSE;
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s_bt = _nm_connection_get_setting_bluetooth_for_nap (connection);
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if (s_bt) {
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return nm_bt_vtable_network_server
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&& nm_bt_vtable_network_server->is_available (nm_bt_vtable_network_server,
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nm_setting_bluetooth_get_bdaddr (s_bt));
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}
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return TRUE;
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}
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static gboolean
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check_connection_compatible (NMDevice *device, NMConnection *connection)
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{
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NMSettingBridge *s_bridge;
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const char *mac_address;
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if (!NM_DEVICE_CLASS (nm_device_bridge_parent_class)->check_connection_compatible (device, connection))
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return FALSE;
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s_bridge = nm_connection_get_setting_bridge (connection);
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if (!s_bridge)
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return FALSE;
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if (!nm_connection_is_type (connection, NM_SETTING_BRIDGE_SETTING_NAME)) {
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if ( nm_connection_is_type (connection, NM_SETTING_BLUETOOTH_SETTING_NAME)
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&& _nm_connection_get_setting_bluetooth_for_nap (connection)) {
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/* a bluetooth NAP connection is handled by the bridge */
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} else
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return FALSE;
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}
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mac_address = nm_setting_bridge_get_mac_address (s_bridge);
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if (mac_address && nm_device_is_real (device)) {
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const char *hw_addr;
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hw_addr = nm_device_get_hw_address (device);
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if (!hw_addr || !nm_utils_hwaddr_matches (hw_addr, -1, mac_address, -1))
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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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complete_connection (NMDevice *device,
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NMConnection *connection,
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const char *specific_object,
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const GSList *existing_connections,
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GError **error)
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{
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NMSettingBridge *s_bridge;
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nm_utils_complete_generic (nm_device_get_platform (device),
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connection,
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NM_SETTING_BRIDGE_SETTING_NAME,
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existing_connections,
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NULL,
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_("Bridge connection"),
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"bridge",
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TRUE);
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s_bridge = nm_connection_get_setting_bridge (connection);
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if (!s_bridge) {
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s_bridge = (NMSettingBridge *) nm_setting_bridge_new ();
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nm_connection_add_setting (connection, NM_SETTING (s_bridge));
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}
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return TRUE;
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}
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/*****************************************************************************/
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typedef struct {
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const char *name;
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const char *sysname;
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gboolean default_if_zero;
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gboolean user_hz_compensate;
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} Option;
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static const Option master_options[] = {
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{ NM_SETTING_BRIDGE_STP, "stp_state", FALSE, FALSE },
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{ NM_SETTING_BRIDGE_PRIORITY, "priority", TRUE, FALSE },
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{ NM_SETTING_BRIDGE_FORWARD_DELAY, "forward_delay", TRUE, TRUE },
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{ NM_SETTING_BRIDGE_HELLO_TIME, "hello_time", TRUE, TRUE },
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{ NM_SETTING_BRIDGE_MAX_AGE, "max_age", TRUE, TRUE },
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{ NM_SETTING_BRIDGE_AGEING_TIME, "ageing_time", TRUE, TRUE },
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{ NM_SETTING_BRIDGE_GROUP_FORWARD_MASK, "group_fwd_mask", TRUE, FALSE },
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{ NM_SETTING_BRIDGE_MULTICAST_SNOOPING, "multicast_snooping", FALSE, FALSE },
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{ NULL, NULL }
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};
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static const Option slave_options[] = {
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{ NM_SETTING_BRIDGE_PORT_PRIORITY, "priority", TRUE, FALSE },
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{ NM_SETTING_BRIDGE_PORT_PATH_COST, "path_cost", TRUE, FALSE },
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{ NM_SETTING_BRIDGE_PORT_HAIRPIN_MODE, "hairpin_mode", FALSE, FALSE },
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{ NULL, NULL }
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};
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static void
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commit_option (NMDevice *device, NMSetting *setting, const Option *option, gboolean slave)
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{
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int ifindex = nm_device_get_ifindex (device);
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GParamSpec *pspec;
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GValue val = G_VALUE_INIT;
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guint32 uval = 0;
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gs_free char *value = NULL;
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g_assert (setting);
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pspec = g_object_class_find_property (G_OBJECT_GET_CLASS (setting), option->name);
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g_assert (pspec);
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/* Get the property's value */
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g_value_init (&val, G_PARAM_SPEC_VALUE_TYPE (pspec));
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g_object_get_property ((GObject *) setting, option->name, &val);
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if (G_VALUE_HOLDS_BOOLEAN (&val))
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uval = g_value_get_boolean (&val) ? 1 : 0;
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else if (G_VALUE_HOLDS_UINT (&val)) {
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uval = g_value_get_uint (&val);
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/* zero means "unspecified" for some NM properties but isn't in the
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* allowed kernel range, so reset the property to the default value.
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*/
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if (option->default_if_zero && uval == 0) {
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g_value_unset (&val);
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g_value_init (&val, G_PARAM_SPEC_VALUE_TYPE (pspec));
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g_param_value_set_default (pspec, &val);
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uval = g_value_get_uint (&val);
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}
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/* Linux kernel bridge interfaces use 'centiseconds' for time-based values.
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* In reality it's not centiseconds, but depends on HZ and USER_HZ, which
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* is almost always works out to be a multiplier of 100, so we can assume
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* centiseconds. See clock_t_to_jiffies().
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*/
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if (option->user_hz_compensate)
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uval *= 100;
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} else
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g_assert_not_reached ();
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g_value_unset (&val);
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value = g_strdup_printf ("%u", uval);
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if (slave)
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nm_platform_sysctl_slave_set_option (nm_device_get_platform (device), ifindex, option->sysname, value);
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else
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nm_platform_sysctl_master_set_option (nm_device_get_platform (device), ifindex, option->sysname, value);
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}
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static void
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commit_master_options (NMDevice *device, NMSettingBridge *setting)
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{
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const Option *option;
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NMSetting *s = NM_SETTING (setting);
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for (option = master_options; option->name; option++)
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commit_option (device, s, option, FALSE);
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}
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static void
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commit_slave_options (NMDevice *device, NMSettingBridgePort *setting)
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{
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const Option *option;
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NMSetting *s, *s_clear = NULL;
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if (setting)
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s = NM_SETTING (setting);
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else
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s = s_clear = nm_setting_bridge_port_new ();
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for (option = slave_options; option->name; option++)
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commit_option (device, s, option, TRUE);
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g_clear_object (&s_clear);
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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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NMDeviceBridge *self = NM_DEVICE_BRIDGE (device);
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NMSettingBridge *s_bridge = nm_connection_get_setting_bridge (connection);
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int ifindex = nm_device_get_ifindex (device);
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const Option *option;
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if (!s_bridge) {
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s_bridge = (NMSettingBridge *) nm_setting_bridge_new ();
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nm_connection_add_setting (connection, (NMSetting *) s_bridge);
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}
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for (option = master_options; option->name; option++) {
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gs_free char *str = nm_platform_sysctl_master_get_option (nm_device_get_platform (device), ifindex, option->sysname);
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int value;
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if (str) {
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value = strtol (str, NULL, 10);
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/* See comments in set_sysfs_uint() about centiseconds. */
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if (option->user_hz_compensate)
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value /= 100;
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g_object_set (s_bridge, option->name, value, NULL);
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} else
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_LOGW (LOGD_BRIDGE, "failed to read bridge setting '%s'", option->sysname);
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}
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}
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static gboolean
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master_update_slave_connection (NMDevice *device,
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NMDevice *slave,
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NMConnection *connection,
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GError **error)
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{
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NMDeviceBridge *self = NM_DEVICE_BRIDGE (device);
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NMSettingConnection *s_con;
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NMSettingBridgePort *s_port;
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int ifindex_slave = nm_device_get_ifindex (slave);
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const char *iface = nm_device_get_iface (device);
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const Option *option;
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g_return_val_if_fail (ifindex_slave > 0, FALSE);
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s_con = nm_connection_get_setting_connection (connection);
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s_port = nm_connection_get_setting_bridge_port (connection);
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if (!s_port) {
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s_port = (NMSettingBridgePort *) nm_setting_bridge_port_new ();
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nm_connection_add_setting (connection, NM_SETTING (s_port));
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}
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for (option = slave_options; option->name; option++) {
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gs_free char *str = nm_platform_sysctl_slave_get_option (nm_device_get_platform (device), ifindex_slave, option->sysname);
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int value;
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if (str) {
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value = strtol (str, NULL, 10);
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/* See comments in set_sysfs_uint() about centiseconds. */
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if (option->user_hz_compensate)
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value /= 100;
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g_object_set (s_port, option->name, value, NULL);
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} else
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_LOGW (LOGD_BRIDGE, "failed to read bridge port setting '%s'", option->sysname);
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}
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g_object_set (s_con,
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NM_SETTING_CONNECTION_MASTER, iface,
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NM_SETTING_CONNECTION_SLAVE_TYPE, NM_SETTING_BRIDGE_SETTING_NAME,
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NULL);
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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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NMActStageReturn ret;
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NMConnection *connection = nm_device_get_applied_connection (device);
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g_return_val_if_fail (connection, NM_ACT_STAGE_RETURN_FAILURE);
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ret = NM_DEVICE_CLASS (nm_device_bridge_parent_class)->act_stage1_prepare (device, out_failure_reason);
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if (ret != NM_ACT_STAGE_RETURN_SUCCESS)
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return ret;
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if (!nm_device_hw_addr_set_cloned (device, nm_device_get_applied_connection (device), FALSE))
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return NM_ACT_STAGE_RETURN_FAILURE;
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commit_master_options (device, nm_connection_get_setting_bridge (connection));
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return NM_ACT_STAGE_RETURN_SUCCESS;
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}
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static NMActStageReturn
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act_stage2_config (NMDevice *device, NMDeviceStateReason *out_failure_reason)
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{
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NMConnection *connection;
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NMSettingBluetooth *s_bt;
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connection = nm_device_get_applied_connection (device);
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s_bt = _nm_connection_get_setting_bluetooth_for_nap (connection);
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if (s_bt) {
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if ( !nm_bt_vtable_network_server
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|| !nm_bt_vtable_network_server->register_bridge (nm_bt_vtable_network_server,
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nm_setting_bluetooth_get_bdaddr (s_bt),
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device)) {
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/* The HCI we could use is no longer present. */
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*out_failure_reason = NM_DEVICE_STATE_REASON_REMOVED;
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return NM_ACT_STAGE_RETURN_FAILURE;
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}
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}
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return NM_ACT_STAGE_RETURN_SUCCESS;
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}
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static void
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deactivate (NMDevice *device)
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{
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if (nm_bt_vtable_network_server) {
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/* always call unregister. It does nothing if the device
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* isn't registered as a hotspot bridge. */
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nm_bt_vtable_network_server->unregister_bridge (nm_bt_vtable_network_server,
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device);
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}
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}
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static gboolean
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enslave_slave (NMDevice *device,
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NMDevice *slave,
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NMConnection *connection,
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gboolean configure)
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{
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NMDeviceBridge *self = NM_DEVICE_BRIDGE (device);
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if (configure) {
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if (!nm_platform_link_enslave (nm_device_get_platform (device), nm_device_get_ip_ifindex (device), nm_device_get_ip_ifindex (slave)))
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return FALSE;
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commit_slave_options (slave, nm_connection_get_setting_bridge_port (connection));
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_LOGI (LOGD_BRIDGE, "attached bridge port %s",
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nm_device_get_ip_iface (slave));
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} else {
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_LOGI (LOGD_BRIDGE, "bridge port %s was attached",
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nm_device_get_ip_iface (slave));
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}
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return TRUE;
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}
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static void
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release_slave (NMDevice *device,
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NMDevice *slave,
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gboolean configure)
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{
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NMDeviceBridge *self = NM_DEVICE_BRIDGE (device);
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gboolean success;
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if (configure) {
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success = nm_platform_link_release (nm_device_get_platform (device),
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nm_device_get_ip_ifindex (device),
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nm_device_get_ip_ifindex (slave));
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if (success) {
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_LOGI (LOGD_BRIDGE, "detached bridge port %s",
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nm_device_get_ip_iface (slave));
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} else {
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_LOGW (LOGD_BRIDGE, "failed to detach bridge port %s",
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nm_device_get_ip_iface (slave));
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}
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} else {
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_LOGI (LOGD_BRIDGE, "bridge port %s was detached",
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nm_device_get_ip_iface (slave));
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}
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}
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static gboolean
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create_and_realize (NMDevice *device,
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NMConnection *connection,
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NMDevice *parent,
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const NMPlatformLink **out_plink,
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GError **error)
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{
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NMSettingBridge *s_bridge;
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const char *iface = nm_device_get_iface (device);
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const char *hwaddr;
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gs_free char *hwaddr_cloned = NULL;
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guint8 mac_address[NM_UTILS_HWADDR_LEN_MAX];
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NMPlatformError plerr;
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nm_assert (iface);
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s_bridge = nm_connection_get_setting_bridge (connection);
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nm_assert (s_bridge);
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hwaddr = nm_setting_bridge_get_mac_address (s_bridge);
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if ( !hwaddr
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&& nm_device_hw_addr_get_cloned (device, connection, FALSE,
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&hwaddr_cloned, NULL, NULL)) {
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/* The cloned MAC address might by dynamic, for example with stable-id="${RANDOM}".
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* It's a bit odd that we first create the device with one dynamic address,
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* and later on may reset it to another. That is, because we don't cache
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* the dynamic address in @device, like we do during nm_device_hw_addr_set_cloned(). */
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hwaddr = hwaddr_cloned;
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}
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if (hwaddr) {
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if (!nm_utils_hwaddr_aton (hwaddr, mac_address, ETH_ALEN)) {
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g_set_error (error, NM_DEVICE_ERROR, NM_DEVICE_ERROR_FAILED,
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"Invalid hardware address '%s'",
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hwaddr);
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g_return_val_if_reached (FALSE);
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}
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}
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plerr = nm_platform_link_bridge_add (nm_device_get_platform (device),
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iface,
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hwaddr ? mac_address : NULL,
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hwaddr ? ETH_ALEN : 0,
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out_plink);
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if (plerr != NM_PLATFORM_ERROR_SUCCESS) {
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g_set_error (error, NM_DEVICE_ERROR, NM_DEVICE_ERROR_CREATION_FAILED,
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"Failed to create bridge interface '%s' for '%s': %s",
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iface,
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nm_connection_get_id (connection),
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nm_platform_error_to_string_a (plerr));
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return FALSE;
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}
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return TRUE;
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}
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/*****************************************************************************/
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static void
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nm_device_bridge_init (NMDeviceBridge * self)
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{
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nm_assert (nm_device_is_master (NM_DEVICE (self)));
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}
|
|
|
|
static void
|
|
nm_device_bridge_class_init (NMDeviceBridgeClass *klass)
|
|
{
|
|
NMDeviceClass *parent_class = NM_DEVICE_CLASS (klass);
|
|
|
|
NM_DEVICE_CLASS_DECLARE_TYPES (klass, NM_SETTING_BRIDGE_SETTING_NAME, NM_LINK_TYPE_BRIDGE)
|
|
|
|
parent_class->is_master = TRUE;
|
|
parent_class->get_generic_capabilities = get_generic_capabilities;
|
|
parent_class->check_connection_compatible = check_connection_compatible;
|
|
parent_class->check_connection_available = check_connection_available;
|
|
parent_class->complete_connection = complete_connection;
|
|
|
|
parent_class->update_connection = update_connection;
|
|
parent_class->master_update_slave_connection = master_update_slave_connection;
|
|
|
|
parent_class->create_and_realize = create_and_realize;
|
|
parent_class->act_stage1_prepare = act_stage1_prepare;
|
|
parent_class->act_stage2_config = act_stage2_config;
|
|
parent_class->deactivate = deactivate;
|
|
parent_class->enslave_slave = enslave_slave;
|
|
parent_class->release_slave = release_slave;
|
|
parent_class->get_configured_mtu = nm_device_get_configured_mtu_for_wired;
|
|
|
|
nm_exported_object_class_add_interface (NM_EXPORTED_OBJECT_CLASS (klass),
|
|
NMDBUS_TYPE_DEVICE_BRIDGE_SKELETON,
|
|
NULL);
|
|
}
|
|
|
|
/*****************************************************************************/
|
|
|
|
#define NM_TYPE_BRIDGE_DEVICE_FACTORY (nm_bridge_device_factory_get_type ())
|
|
#define NM_BRIDGE_DEVICE_FACTORY(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), NM_TYPE_BRIDGE_DEVICE_FACTORY, NMBridgeDeviceFactory))
|
|
|
|
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_BRIDGE,
|
|
NM_DEVICE_IFACE, iface,
|
|
NM_DEVICE_DRIVER, "bridge",
|
|
NM_DEVICE_TYPE_DESC, "Bridge",
|
|
NM_DEVICE_DEVICE_TYPE, NM_DEVICE_TYPE_BRIDGE,
|
|
NM_DEVICE_LINK_TYPE, NM_LINK_TYPE_BRIDGE,
|
|
NULL);
|
|
}
|
|
|
|
static gboolean
|
|
match_connection (NMDeviceFactory *factory,
|
|
NMConnection *connection)
|
|
{
|
|
const char *type = nm_connection_get_connection_type (connection);
|
|
|
|
if (nm_streq (type, NM_SETTING_BRIDGE_SETTING_NAME))
|
|
return TRUE;
|
|
|
|
nm_assert (nm_streq (type, NM_SETTING_BLUETOOTH_SETTING_NAME));
|
|
|
|
if (!_nm_connection_get_setting_bluetooth_for_nap (connection))
|
|
return FALSE;
|
|
|
|
if (!g_type_from_name ("NMBluezManager")) {
|
|
/* bluetooth NAP connections are handled by bridge factory. However,
|
|
* it needs help from the bluetooth plugin, so if the plugin is not loaded,
|
|
* we claim not to support it. */
|
|
return FALSE;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
NM_DEVICE_FACTORY_DEFINE_INTERNAL (BRIDGE, Bridge, bridge,
|
|
NM_DEVICE_FACTORY_DECLARE_LINK_TYPES (NM_LINK_TYPE_BRIDGE)
|
|
NM_DEVICE_FACTORY_DECLARE_SETTING_TYPES (NM_SETTING_BRIDGE_SETTING_NAME, NM_SETTING_BLUETOOTH_SETTING_NAME),
|
|
factory_class->create_device = create_device;
|
|
factory_class->match_connection = match_connection;
|
|
);
|