diff options
Diffstat (limited to 'src/core/devices/nm-device-veth.c')
| -rw-r--r-- | src/core/devices/nm-device-veth.c | 232 |
1 files changed, 232 insertions, 0 deletions
diff --git a/src/core/devices/nm-device-veth.c b/src/core/devices/nm-device-veth.c new file mode 100644 index 00000000..e0ba843d --- /dev/null +++ b/src/core/devices/nm-device-veth.c @@ -0,0 +1,232 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * Copyright (C) 2013 Red Hat, Inc. + */ + +#include "src/core/nm-default-daemon.h" + +#include <stdlib.h> + +#include "nm-core-internal.h" +#include "nm-device-veth.h" +#include "nm-device-private.h" +#include "nm-manager.h" +#include "platform/nm-platform.h" +#include "nm-device-factory.h" +#include "nm-setting-veth.h" + +#define _NMLOG_DEVICE_TYPE NMDeviceVeth +#include "nm-device-logging.h" + +/*****************************************************************************/ + +struct _NMDeviceVeth { + NMDeviceEthernet parent; +}; + +struct _NMDeviceVethClass { + NMDeviceEthernetClass parent; +}; + +NM_GOBJECT_PROPERTIES_DEFINE(NMDeviceVeth, PROP_PEER, ); + +/*****************************************************************************/ + +G_DEFINE_TYPE(NMDeviceVeth, nm_device_veth, NM_TYPE_DEVICE_ETHERNET) + +/*****************************************************************************/ + +static void +update_properties(NMDevice *device) +{ + NMDevice *peer; + int ifindex, peer_ifindex; + + ifindex = nm_device_get_ifindex(device); + + if (ifindex <= 0 + || !nm_platform_link_veth_get_properties(nm_device_get_platform(device), + ifindex, + &peer_ifindex)) + peer_ifindex = 0; + + nm_device_parent_set_ifindex(device, peer_ifindex); + + peer = nm_device_parent_get_device(device); + if (peer && NM_IS_DEVICE_VETH(peer) && nm_device_parent_get_ifindex(peer) <= 0) + update_properties(peer); +} + +static gboolean +can_unmanaged_external_down(NMDevice *self) +{ + /* Unless running in a container, an udev rule causes these to be + * unmanaged. If there's no udev then we're probably in a container + * and should IFF_UP and configure the veth ourselves even if we + * didn't create it. */ + return FALSE; +} + +static void +link_changed(NMDevice *device, const NMPlatformLink *pllink) +{ + NM_DEVICE_CLASS(nm_device_veth_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); + NMSettingVeth *s_veth; + int r; + + s_veth = _nm_connection_get_setting(connection, NM_TYPE_SETTING_VETH); + if (!s_veth) { + g_set_error(error, + NM_DEVICE_ERROR, + NM_DEVICE_ERROR_CREATION_FAILED, + "Profile %s (%s) is not a suitable veth profile", + nm_connection_get_id(connection), + nm_connection_get_uuid(connection)); + return FALSE; + } + + r = nm_platform_link_veth_add(nm_device_get_platform(device), + iface, + nm_setting_veth_get_peer(s_veth), + out_plink); + if (r < 0) { + g_set_error(error, + NM_DEVICE_ERROR, + NM_DEVICE_ERROR_CREATION_FAILED, + "Failed to create veth interface '%s' for '%s': %s", + iface, + nm_connection_get_id(connection), + nm_strerror(r)); + return FALSE; + } + return TRUE; +} + +/*****************************************************************************/ + +static NMDeviceCapabilities +get_generic_capabilities(NMDevice *device) +{ + return NM_DEVICE_CAP_CARRIER_DETECT | NM_DEVICE_CAP_IS_SOFTWARE; +} + +/*****************************************************************************/ + +static void +nm_device_veth_init(NMDeviceVeth *self) +{} + +static void +parent_changed_notify(NMDevice *device, + int old_ifindex, + NMDevice *old_parent, + int new_ifindex, + NMDevice *new_parent) +{ + NM_DEVICE_CLASS(nm_device_veth_parent_class) + ->parent_changed_notify(device, old_ifindex, old_parent, new_ifindex, new_parent); + _notify(NM_DEVICE_VETH(device), PROP_PEER); +} + +static void +get_property(GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) +{ + NMDeviceVeth *self = NM_DEVICE_VETH(object); + NMDevice * peer; + + switch (prop_id) { + case PROP_PEER: + peer = nm_device_parent_get_device(NM_DEVICE(self)); + if (peer && !NM_IS_DEVICE_VETH(peer)) + peer = NULL; + nm_dbus_utils_g_value_set_object_path(value, peer); + break; + default: + G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec); + break; + } +} + +static const NMDBusInterfaceInfoExtended interface_info_device_veth = { + .parent = NM_DEFINE_GDBUS_INTERFACE_INFO_INIT( + NM_DBUS_INTERFACE_DEVICE_VETH, + .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("Peer", + "o", + NM_DEVICE_VETH_PEER), ), ), + .legacy_property_changed = TRUE, +}; + +static void +nm_device_veth_class_init(NMDeviceVethClass *klass) +{ + GObjectClass * object_class = G_OBJECT_CLASS(klass); + NMDBusObjectClass *dbus_object_class = NM_DBUS_OBJECT_CLASS(klass); + NMDeviceClass * device_class = NM_DEVICE_CLASS(klass); + + object_class->get_property = get_property; + + dbus_object_class->interface_infos = NM_DBUS_INTERFACE_INFOS(&interface_info_device_veth); + + device_class->connection_type_supported = NULL; + device_class->link_types = NM_DEVICE_DEFINE_LINK_TYPES(NM_LINK_TYPE_VETH); + + device_class->can_unmanaged_external_down = can_unmanaged_external_down; + device_class->link_changed = link_changed; + device_class->parent_changed_notify = parent_changed_notify; + device_class->create_and_realize = create_and_realize; + device_class->get_generic_capabilities = get_generic_capabilities; + + obj_properties[PROP_PEER] = g_param_spec_string(NM_DEVICE_VETH_PEER, + "", + "", + NULL, + G_PARAM_READABLE | G_PARAM_STATIC_STRINGS); + + g_object_class_install_properties(object_class, _PROPERTY_ENUMS_LAST, obj_properties); +} + +/*****************************************************************************/ + +#define NM_TYPE_VETH_DEVICE_FACTORY (nm_veth_device_factory_get_type()) +#define NM_VETH_DEVICE_FACTORY(obj) \ + (G_TYPE_CHECK_INSTANCE_CAST((obj), NM_TYPE_VETH_DEVICE_FACTORY, NMVethDeviceFactory)) + +static NMDevice * +create_device(NMDeviceFactory * factory, + const char * iface, + const NMPlatformLink *plink, + NMConnection * connection, + gboolean * out_ignore) +{ + return g_object_new(NM_TYPE_DEVICE_VETH, + NM_DEVICE_IFACE, + iface, + NM_DEVICE_TYPE_DESC, + "Veth", + NM_DEVICE_DEVICE_TYPE, + NM_DEVICE_TYPE_VETH, + NM_DEVICE_LINK_TYPE, + NM_LINK_TYPE_VETH, + NULL); +} + +NM_DEVICE_FACTORY_DEFINE_INTERNAL( + VETH, + Veth, + veth, + NM_DEVICE_FACTORY_DECLARE_LINK_TYPES(NM_LINK_TYPE_VETH) + NM_DEVICE_FACTORY_DECLARE_SETTING_TYPES(NM_SETTING_VETH_SETTING_NAME), + factory_class->create_device = create_device;); |