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NetworkManager/src/devices/nm-device-macvlan.c

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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
/* NetworkManager -- Network link manager
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Copyright 2013 - 2015 Red Hat, Inc.
*/
#include "nm-default.h"
#include "nm-device-macvlan.h"
#include <string.h>
#include "nm-device-private.h"
#include "settings/nm-settings.h"
#include "nm-act-request.h"
#include "nm-manager.h"
#include "platform/nm-platform.h"
#include "nm-device-factory.h"
#include "nm-setting-macvlan.h"
#include "nm-setting-wired.h"
#include "nm-active-connection.h"
#include "nm-ip4-config.h"
#include "nm-utils.h"
#include "nm-device-logging.h"
_LOG_DECLARE_SELF(NMDeviceMacvlan);
/*****************************************************************************/
NM_GOBJECT_PROPERTIES_DEFINE (NMDeviceMacvlan,
PROP_MODE,
PROP_NO_PROMISC,
PROP_TAP,
);
typedef struct {
gulong parent_state_id;
NMPlatformLnkMacvlan props;
} NMDeviceMacvlanPrivate;
struct _NMDeviceMacvlan {
NMDevice parent;
NMDeviceMacvlanPrivate _priv;
};
struct _NMDeviceMacvlanClass {
NMDeviceClass parent;
};
G_DEFINE_TYPE (NMDeviceMacvlan, nm_device_macvlan, NM_TYPE_DEVICE)
#define NM_DEVICE_MACVLAN_GET_PRIVATE(self) _NM_GET_PRIVATE (self, NMDeviceMacvlan, NM_IS_DEVICE_MACVLAN)
/*****************************************************************************/
static int modes[][2] = {
{ NM_SETTING_MACVLAN_MODE_VEPA, MACVLAN_MODE_VEPA },
{ NM_SETTING_MACVLAN_MODE_BRIDGE, MACVLAN_MODE_BRIDGE },
{ NM_SETTING_MACVLAN_MODE_PRIVATE, MACVLAN_MODE_PRIVATE },
{ NM_SETTING_MACVLAN_MODE_PASSTHRU, MACVLAN_MODE_PASSTHRU },
};
static int
setting_mode_to_platform (int mode)
{
guint i;
for (i = 0; i < G_N_ELEMENTS (modes); i++) {
if (modes[i][0] == mode)
return modes[i][1];
}
return 0;
}
static int
platform_mode_to_setting (int mode)
{
guint i;
for (i = 0; i < G_N_ELEMENTS (modes); i++) {
if (modes[i][1] == mode)
return modes[i][0];
}
return 0;
}
static const char *
platform_mode_to_string (guint mode)
{
switch (mode) {
case MACVLAN_MODE_PRIVATE:
return "private";
case MACVLAN_MODE_VEPA:
return "vepa";
case MACVLAN_MODE_BRIDGE:
return "bridge";
case MACVLAN_MODE_PASSTHRU:
return "passthru";
default:
return "unknown";
}
}
/*****************************************************************************/
static void
parent_state_changed (NMDevice *parent,
NMDeviceState new_state,
NMDeviceState old_state,
NMDeviceStateReason reason,
gpointer user_data)
{
NMDeviceMacvlan *self = NM_DEVICE_MACVLAN (user_data);
/* We'll react to our own carrier state notifications. Ignore the parent's. */
if (nm_device_state_reason_check (reason) == NM_DEVICE_STATE_REASON_CARRIER)
return;
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)
{
NMDeviceMacvlan *self = NM_DEVICE_MACVLAN (device);
NMDeviceMacvlanPrivate *priv = NM_DEVICE_MACVLAN_GET_PRIVATE (self);
NM_DEVICE_CLASS (nm_device_macvlan_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 void
update_properties (NMDevice *device)
{
NMDeviceMacvlan *self = NM_DEVICE_MACVLAN (device);
NMDeviceMacvlanPrivate *priv = NM_DEVICE_MACVLAN_GET_PRIVATE (self);
GObject *object = G_OBJECT (device);
const NMPlatformLnkMacvlan *props;
const NMPlatformLink *plink;
if (priv->props.tap)
props = nm_platform_link_get_lnk_macvtap (nm_device_get_platform (device), nm_device_get_ifindex (device), &plink);
else
props = nm_platform_link_get_lnk_macvlan (nm_device_get_platform (device), nm_device_get_ifindex (device), &plink);
if (!props) {
_LOGW (LOGD_PLATFORM, "could not get %s properties", priv->props.tap ? "macvtap" : "macvlan");
return;
}
g_object_freeze_notify (object);
nm_device_parent_set_ifindex (device, plink->parent);
#define CHECK_PROPERTY_CHANGED(field, prop) \
G_STMT_START { \
if (priv->props.field != props->field) { \
priv->props.field = props->field; \
_notify (self, prop); \
} \
} G_STMT_END
CHECK_PROPERTY_CHANGED (mode, PROP_MODE);
CHECK_PROPERTY_CHANGED (no_promisc, PROP_NO_PROMISC);
g_object_thaw_notify (object);
}
static void
link_changed (NMDevice *device,
const NMPlatformLink *pllink)
{
NM_DEVICE_CLASS (nm_device_macvlan_parent_class)->link_changed (device, pllink);
update_properties (device);
}
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);
NMPlatformError plerr;
NMSettingMacvlan *s_macvlan;
NMPlatformLnkMacvlan lnk = { };
int parent_ifindex;
s_macvlan = nm_connection_get_setting_macvlan (connection);
g_return_val_if_fail (s_macvlan, 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,
"MACVLAN devices can not be created without a parent interface");
g_return_val_if_fail (!parent, FALSE);
return FALSE;
}
lnk.mode = setting_mode_to_platform (nm_setting_macvlan_get_mode (s_macvlan));
if (!lnk.mode) {
g_set_error (error, NM_DEVICE_ERROR, NM_DEVICE_ERROR_FAILED,
"unsupported MACVLAN mode %u in connection %s",
nm_setting_macvlan_get_mode (s_macvlan),
nm_connection_get_uuid (connection));
return FALSE;
}
lnk.no_promisc = !nm_setting_macvlan_get_promiscuous (s_macvlan);
lnk.tap = nm_setting_macvlan_get_tap (s_macvlan);
plerr = nm_platform_link_macvlan_add (nm_device_get_platform (device), iface, parent_ifindex, &lnk, out_plink);
if (plerr != NM_PLATFORM_ERROR_SUCCESS) {
g_set_error (error, NM_DEVICE_ERROR, NM_DEVICE_ERROR_CREATION_FAILED,
"Failed to create %s interface '%s' for '%s': %s",
lnk.tap ? "macvtap" : "macvlan",
iface,
nm_connection_get_id (connection),
nm_platform_error_to_string_a (plerr));
return FALSE;
}
return TRUE;
}
/*****************************************************************************/
static NMDeviceCapabilities
get_generic_capabilities (NMDevice *dev)
{
/* We assume MACVLAN interfaces always support carrier detect */
return NM_DEVICE_CAP_CARRIER_DETECT | NM_DEVICE_CAP_IS_SOFTWARE;
}
/*****************************************************************************/
static gboolean
is_available (NMDevice *device, NMDeviceCheckDevAvailableFlags flags)
{
if (!nm_device_parent_get_device (device))
return FALSE;
return NM_DEVICE_CLASS (nm_device_macvlan_parent_class)->is_available (device, flags);
}
/*****************************************************************************/
static gboolean
check_connection_compatible (NMDevice *device, NMConnection *connection)
{
NMDeviceMacvlanPrivate *priv = NM_DEVICE_MACVLAN_GET_PRIVATE ((NMDeviceMacvlan *) device);
NMSettingMacvlan *s_macvlan;
const char *parent = NULL;
if (!NM_DEVICE_CLASS (nm_device_macvlan_parent_class)->check_connection_compatible (device, connection))
return FALSE;
s_macvlan = nm_connection_get_setting_macvlan (connection);
if (!s_macvlan)
return FALSE;
if (nm_setting_macvlan_get_tap (s_macvlan) != priv->props.tap)
return FALSE;
/* Before the device is realized some properties will not be set */
if (nm_device_is_real (device)) {
if (setting_mode_to_platform (nm_setting_macvlan_get_mode (s_macvlan)) != priv->props.mode)
return FALSE;
if (nm_setting_macvlan_get_promiscuous (s_macvlan) == priv->props.no_promisc)
return FALSE;
/* Check parent interface; could be an interface name or a UUID */
parent = nm_setting_macvlan_get_parent (s_macvlan);
if (parent) {
if (!nm_device_match_parent (device, parent))
return FALSE;
} else {
/* Parent could be a MAC address in an NMSettingWired */
if (!nm_device_match_parent_hwaddr (device, connection, TRUE))
return FALSE;
}
}
return TRUE;
}
static gboolean
complete_connection (NMDevice *device,
NMConnection *connection,
const char *specific_object,
NMConnection *const*existing_connections,
GError **error)
{
NMSettingMacvlan *s_macvlan;
nm_utils_complete_generic (nm_device_get_platform (device),
connection,
NM_SETTING_MACVLAN_SETTING_NAME,
existing_connections,
NULL,
_("MACVLAN connection"),
NULL,
TRUE);
s_macvlan = nm_connection_get_setting_macvlan (connection);
if (!s_macvlan) {
g_set_error_literal (error, NM_DEVICE_ERROR, NM_DEVICE_ERROR_INVALID_CONNECTION,
"A 'macvlan' setting is required.");
return FALSE;
}
/* If there's no MACVLAN interface, no parent, and no hardware address in the
* settings, then there's not enough information to complete the setting.
*/
if ( !nm_setting_macvlan_get_parent (s_macvlan)
&& !nm_device_match_parent_hwaddr (device, connection, TRUE)) {
g_set_error_literal (error, NM_DEVICE_ERROR, NM_DEVICE_ERROR_INVALID_CONNECTION,
"The 'macvlan' setting had no interface name, parent, or hardware address.");
return FALSE;
}
return TRUE;
}
static void
update_connection (NMDevice *device, NMConnection *connection)
{
NMDeviceMacvlanPrivate *priv = NM_DEVICE_MACVLAN_GET_PRIVATE ((NMDeviceMacvlan *) device);
NMSettingMacvlan *s_macvlan = nm_connection_get_setting_macvlan (connection);
NMDevice *parent_device;
const char *setting_parent, *new_parent;
int new_mode;
if (!s_macvlan) {
s_macvlan = (NMSettingMacvlan *) nm_setting_macvlan_new ();
nm_connection_add_setting (connection, (NMSetting *) s_macvlan);
}
new_mode = platform_mode_to_setting (priv->props.mode);
if (new_mode != nm_setting_macvlan_get_mode (s_macvlan))
g_object_set (s_macvlan, NM_SETTING_MACVLAN_MODE, new_mode, NULL);
if (priv->props.no_promisc == nm_setting_macvlan_get_promiscuous (s_macvlan))
g_object_set (s_macvlan, NM_SETTING_MACVLAN_PROMISCUOUS, !priv->props.no_promisc, NULL);
if (priv->props.tap != nm_setting_macvlan_get_tap (s_macvlan))
g_object_set (s_macvlan, NM_SETTING_MACVLAN_TAP, !!priv->props.tap, NULL);
/* Update parent in the connection; default to parent's interface name */
parent_device = nm_device_parent_get_device (device);
if (parent_device) {
new_parent = nm_device_get_iface (parent_device);
setting_parent = nm_setting_macvlan_get_parent (s_macvlan);
if (setting_parent && nm_utils_is_uuid (setting_parent)) {
NMConnection *parent_connection;
/* Don't change a parent specified by UUID if it's still valid */
parent_connection = (NMConnection *) nm_settings_get_connection_by_uuid (nm_device_get_settings (device), setting_parent);
if (parent_connection && nm_device_check_connection_compatible (parent_device, parent_connection))
new_parent = NULL;
}
if (new_parent)
g_object_set (s_macvlan, NM_SETTING_MACVLAN_PARENT, new_parent, NULL);
} else
g_object_set (s_macvlan, NM_SETTING_MACVLAN_PARENT, NULL, NULL);
}
static NMActStageReturn
act_stage1_prepare (NMDevice *dev, NMDeviceStateReason *out_failure_reason)
{
NMActStageReturn ret;
ret = NM_DEVICE_CLASS (nm_device_macvlan_parent_class)->act_stage1_prepare (dev, out_failure_reason);
if (ret != NM_ACT_STAGE_RETURN_SUCCESS)
return ret;
if (!nm_device_hw_addr_set_cloned (dev, nm_device_get_applied_connection (dev), FALSE))
return NM_ACT_STAGE_RETURN_FAILURE;
return NM_ACT_STAGE_RETURN_SUCCESS;
}
/*****************************************************************************/
static void
get_property (GObject *object, guint prop_id,
GValue *value, GParamSpec *pspec)
{
NMDeviceMacvlanPrivate *priv = NM_DEVICE_MACVLAN_GET_PRIVATE ((NMDeviceMacvlan *) object);
switch (prop_id) {
case PROP_MODE:
g_value_set_string (value, platform_mode_to_string (priv->props.mode));
break;
case PROP_NO_PROMISC:
g_value_set_boolean (value, priv->props.no_promisc);
break;
case PROP_TAP:
g_value_set_boolean (value, priv->props.tap);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
set_property (GObject *object, guint prop_id,
const GValue *value, GParamSpec *pspec)
{
NMDeviceMacvlanPrivate *priv = NM_DEVICE_MACVLAN_GET_PRIVATE ((NMDeviceMacvlan *) object);
switch (prop_id) {
case PROP_TAP:
priv->props.tap = g_value_get_boolean (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
/*****************************************************************************/
static void
nm_device_macvlan_init (NMDeviceMacvlan *self)
{
}
static const NMDBusInterfaceInfoExtended interface_info_device_macvlan = {
.parent = NM_DEFINE_GDBUS_INTERFACE_INFO_INIT (
NM_DBUS_INTERFACE_DEVICE_MACVLAN,
.signals = NM_DEFINE_GDBUS_SIGNAL_INFOS (
&nm_signal_info_property_changed_legacy,
),
.properties = NM_DEFINE_GDBUS_PROPERTY_INFOS (
NM_DEFINE_DBUS_PROPERTY_INFO_EXTENDED_READABLE_L ("Parent", "o", NM_DEVICE_PARENT),
NM_DEFINE_DBUS_PROPERTY_INFO_EXTENDED_READABLE_L ("Mode", "s", NM_DEVICE_MACVLAN_MODE),
NM_DEFINE_DBUS_PROPERTY_INFO_EXTENDED_READABLE_L ("NoPromisc", "b", NM_DEVICE_MACVLAN_NO_PROMISC),
NM_DEFINE_DBUS_PROPERTY_INFO_EXTENDED_READABLE_L ("Tab", "b", NM_DEVICE_MACVLAN_TAP),
),
),
.legacy_property_changed = TRUE,
};
static void
nm_device_macvlan_class_init (NMDeviceMacvlanClass *klass)
{
GObjectClass *object_class = G_OBJECT_CLASS (klass);
NMDBusObjectClass *dbus_object_class = NM_DBUS_OBJECT_CLASS (klass);
NMDeviceClass *device_class = NM_DEVICE_CLASS (klass);
NM_DEVICE_CLASS_DECLARE_TYPES (klass, NULL, NM_LINK_TYPE_MACVLAN, NM_LINK_TYPE_MACVTAP);
object_class->get_property = get_property;
object_class->set_property = set_property;
dbus_object_class->interface_infos = NM_DBUS_INTERFACE_INFOS (&interface_info_device_macvlan);
device_class->act_stage1_prepare = act_stage1_prepare;
device_class->check_connection_compatible = check_connection_compatible;
device_class->complete_connection = complete_connection;
device_class->connection_type_supported = NM_SETTING_MACVLAN_SETTING_NAME;
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->is_available = is_available;
device_class->link_changed = link_changed;
device_class->parent_changed_notify = parent_changed_notify;
device_class->update_connection = update_connection;
obj_properties[PROP_MODE] =
g_param_spec_string (NM_DEVICE_MACVLAN_MODE, "", "",
NULL,
G_PARAM_READABLE |
G_PARAM_STATIC_STRINGS);
obj_properties[PROP_NO_PROMISC] =
g_param_spec_boolean (NM_DEVICE_MACVLAN_NO_PROMISC, "", "",
FALSE,
G_PARAM_READABLE |
G_PARAM_STATIC_STRINGS);
obj_properties[PROP_TAP] =
g_param_spec_boolean (NM_DEVICE_MACVLAN_TAP, "", "",
FALSE,
G_PARAM_READWRITE |
G_PARAM_CONSTRUCT_ONLY |
G_PARAM_STATIC_STRINGS);
g_object_class_install_properties (object_class, _PROPERTY_ENUMS_LAST, obj_properties);
}
/*****************************************************************************/
#define NM_TYPE_MACVLAN_DEVICE_FACTORY (nm_macvlan_device_factory_get_type ())
#define NM_MACVLAN_DEVICE_FACTORY(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), NM_TYPE_MACVLAN_DEVICE_FACTORY, NMMacvlanDeviceFactory))
static NMDevice *
create_device (NMDeviceFactory *factory,
const char *iface,
const NMPlatformLink *plink,
NMConnection *connection,
gboolean *out_ignore)
{
NMSettingMacvlan *s_macvlan;
NMLinkType link_type;
gboolean tap;
if (connection) {
s_macvlan = nm_connection_get_setting_macvlan (connection);
g_assert (s_macvlan);
tap = nm_setting_macvlan_get_tap (s_macvlan);
} else {
g_assert (plink);
tap = plink->type == NM_LINK_TYPE_MACVTAP;
}
link_type = tap ? NM_LINK_TYPE_MACVTAP : NM_LINK_TYPE_MACVLAN;
return (NMDevice *) g_object_new (NM_TYPE_DEVICE_MACVLAN,
NM_DEVICE_IFACE, iface,
NM_DEVICE_TYPE_DESC, "Macvlan",
NM_DEVICE_DEVICE_TYPE, NM_DEVICE_TYPE_MACVLAN,
NM_DEVICE_LINK_TYPE, link_type,
NM_DEVICE_MACVLAN_TAP, tap,
NULL);
}
static const char *
get_connection_parent (NMDeviceFactory *factory, NMConnection *connection)
{
NMSettingMacvlan *s_macvlan;
NMSettingWired *s_wired;
const char *parent = NULL;
g_return_val_if_fail (nm_connection_is_type (connection, NM_SETTING_MACVLAN_SETTING_NAME), NULL);
s_macvlan = nm_connection_get_setting_macvlan (connection);
g_assert (s_macvlan);
parent = nm_setting_macvlan_get_parent (s_macvlan);
if (parent)
return parent;
/* Try the hardware address from the MACVLAN connection's hardware setting */
s_wired = nm_connection_get_setting_wired (connection);
if (s_wired)
return nm_setting_wired_get_mac_address (s_wired);
return NULL;
}
static char *
get_connection_iface (NMDeviceFactory *factory,
NMConnection *connection,
const char *parent_iface)
{
NMSettingMacvlan *s_macvlan;
const char *ifname;
g_return_val_if_fail (nm_connection_is_type (connection, NM_SETTING_MACVLAN_SETTING_NAME), NULL);
s_macvlan = nm_connection_get_setting_macvlan (connection);
g_assert (s_macvlan);
if (!parent_iface)
return NULL;
ifname = nm_connection_get_interface_name (connection);
return g_strdup (ifname);
}
NM_DEVICE_FACTORY_DEFINE_INTERNAL (MACVLAN, Macvlan, macvlan,
NM_DEVICE_FACTORY_DECLARE_LINK_TYPES (NM_LINK_TYPE_MACVLAN, NM_LINK_TYPE_MACVTAP)
NM_DEVICE_FACTORY_DECLARE_SETTING_TYPES (NM_SETTING_MACVLAN_SETTING_NAME),
factory_class->create_device = create_device;
factory_class->get_connection_parent = get_connection_parent;
factory_class->get_connection_iface = get_connection_iface;
);
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