/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * Copyright (C) 2011 - 2012 Red Hat, Inc. */ #include "src/core/nm-default-daemon.h" #include "nm-device-vlan.h" #include #include #include "nm-manager.h" #include "nm-utils.h" #include "NetworkManagerUtils.h" #include "nm-device-private.h" #include "settings/nm-settings.h" #include "nm-act-request.h" #include "libnm-platform/nm-platform.h" #include "nm-device-factory.h" #include "nm-manager.h" #include "libnm-core-aux-intern/nm-libnm-core-utils.h" #include "libnm-core-intern/nm-core-internal.h" #include "libnm-platform/nmp-object.h" #include "libnm-platform/nm-platform-utils.h" #define _NMLOG_DEVICE_TYPE NMDeviceVlan #include "nm-device-logging.h" /*****************************************************************************/ NM_GOBJECT_PROPERTIES_DEFINE(NMDeviceVlan, PROP_VLAN_ID, ); typedef struct { gulong parent_hwaddr_id; gulong parent_mtu_id; guint vlan_id; } NMDeviceVlanPrivate; struct _NMDeviceVlan { NMDevice parent; NMDeviceVlanPrivate _priv; }; struct _NMDeviceVlanClass { NMDeviceClass parent; }; G_DEFINE_TYPE(NMDeviceVlan, nm_device_vlan, NM_TYPE_DEVICE) #define NM_DEVICE_VLAN_GET_PRIVATE(self) \ _NM_GET_PRIVATE(self, NMDeviceVlan, NM_IS_DEVICE_VLAN, NMDevice) /*****************************************************************************/ static void parent_mtu_maybe_changed(NMDevice *parent, GParamSpec *pspec, gpointer user_data) { /* the MTU of a VLAN device is limited by the parent's MTU. * * When the parent's MTU changes, try to re-set the MTU. */ nm_device_commit_mtu(user_data); } static void parent_hwaddr_maybe_changed(NMDevice *parent, GParamSpec *pspec, gpointer user_data) { NMDevice *device = NM_DEVICE(user_data); NMDeviceVlan *self = NM_DEVICE_VLAN(device); NMConnection *connection; const char *old_mac; const char *new_mac; /* Never touch assumed devices */ if (nm_device_managed_type_is_external_or_assume(device)) return; connection = nm_device_get_applied_connection(device); if (!connection) return; /* Update the VLAN MAC only if configuration does not specify one */ if (nm_device_hw_addr_is_explict(device)) return; old_mac = nm_device_get_hw_address(device); new_mac = nm_device_get_hw_address(parent); if (nm_streq0(old_mac, new_mac)) return; _LOGD(LOGD_VLAN, "parent hardware address changed to %s%s%s", NM_PRINT_FMT_QUOTE_STRING(new_mac)); if (new_mac) { nm_device_hw_addr_set(device, new_mac, "vlan-parent", TRUE); /* When changing the hw address the interface is taken down, * removing the IPv6 configuration; reapply it. */ nm_device_l3cfg_commit(device, NM_L3_CFG_COMMIT_TYPE_UPDATE, FALSE); } } static void parent_changed_notify(NMDevice *device, int old_ifindex, NMDevice *old_parent, int new_ifindex, NMDevice *new_parent) { NMDeviceVlan *self = NM_DEVICE_VLAN(device); NMDeviceVlanPrivate *priv = NM_DEVICE_VLAN_GET_PRIVATE(self); NM_DEVICE_CLASS(nm_device_vlan_parent_class) ->parent_changed_notify(device, old_ifindex, old_parent, new_ifindex, new_parent); nm_clear_g_signal_handler(old_parent, &priv->parent_hwaddr_id); nm_clear_g_signal_handler(old_parent, &priv->parent_mtu_id); if (new_parent) { priv->parent_hwaddr_id = g_signal_connect(new_parent, "notify::" NM_DEVICE_HW_ADDRESS, G_CALLBACK(parent_hwaddr_maybe_changed), device); parent_hwaddr_maybe_changed(new_parent, NULL, self); priv->parent_mtu_id = g_signal_connect(new_parent, "notify::" NM_DEVICE_MTU, G_CALLBACK(parent_mtu_maybe_changed), device); parent_mtu_maybe_changed(new_parent, NULL, self); } /* Recheck availability now that the parent has changed */ if (new_ifindex > 0) { nm_device_queue_recheck_available(device, NM_DEVICE_STATE_REASON_PARENT_CHANGED, NM_DEVICE_STATE_REASON_PARENT_CHANGED); } } static void update_properties(NMDevice *device) { NMDeviceVlanPrivate *priv; const NMPlatformLink *plink = NULL; const NMPlatformLnkVlan *plnk = NULL; int ifindex; int parent_ifindex = 0; guint vlan_id; g_return_if_fail(NM_IS_DEVICE_VLAN(device)); priv = NM_DEVICE_VLAN_GET_PRIVATE(device); ifindex = nm_device_get_ifindex(device); if (ifindex > 0) plnk = nm_platform_link_get_lnk_vlan(nm_device_get_platform(device), ifindex, &plink); if (plnk && plink->parent > 0) parent_ifindex = plink->parent; g_object_freeze_notify((GObject *) device); nm_device_parent_set_ifindex(device, parent_ifindex); vlan_id = plnk ? plnk->id : 0; if (vlan_id != priv->vlan_id) { priv->vlan_id = vlan_id; _notify((NMDeviceVlan *) device, PROP_VLAN_ID); } g_object_thaw_notify((GObject *) device); } static void link_changed(NMDevice *device, const NMPlatformLink *pllink) { NM_DEVICE_CLASS(nm_device_vlan_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) { NMDeviceVlanPrivate *priv = NM_DEVICE_VLAN_GET_PRIVATE(device); const char *iface = nm_device_get_iface(device); NMSettingVlan *s_vlan; int parent_ifindex; guint vlan_id; int r; const char *protocol_str; guint16 protocol = ETH_P_8021Q; s_vlan = nm_connection_get_setting_vlan(connection); g_assert(s_vlan); if (!parent) { g_set_error(error, NM_DEVICE_ERROR, NM_DEVICE_ERROR_MISSING_DEPENDENCIES, "VLAN devices can not be created without a parent interface"); return FALSE; } parent_ifindex = nm_device_get_ifindex(parent); if (parent_ifindex <= 0) { g_set_error(error, NM_DEVICE_ERROR, NM_DEVICE_ERROR_MISSING_DEPENDENCIES, "cannot retrieve ifindex of interface %s (%s)", nm_device_get_iface(parent), nm_device_get_type_desc(parent)); return FALSE; } if (!nm_device_supports_vlans(parent)) { g_set_error(error, NM_DEVICE_ERROR, NM_DEVICE_ERROR_FAILED, "no support for VLANs on interface %s of type %s", nm_device_get_iface(parent), nm_device_get_type_desc(parent)); return FALSE; } vlan_id = nm_setting_vlan_get_id(s_vlan); protocol_str = nm_setting_vlan_get_protocol(s_vlan); if (protocol_str) { if (nm_streq(protocol_str, "802.1ad")) protocol = ETH_P_8021AD; else nm_assert(nm_streq(protocol_str, "802.1Q")); } r = nm_platform_link_vlan_add(nm_device_get_platform(device), iface, parent_ifindex, &((NMPlatformLnkVlan) { .id = vlan_id, .flags = nm_setting_vlan_get_flags(s_vlan), .protocol = protocol, }), out_plink); if (r < 0) { g_set_error(error, NM_DEVICE_ERROR, NM_DEVICE_ERROR_CREATION_FAILED, "Failed to create VLAN interface '%s' for '%s': %s", iface, nm_connection_get_id(connection), nm_strerror(r)); return FALSE; } nm_device_parent_set_ifindex(device, parent_ifindex); if (vlan_id != priv->vlan_id) { priv->vlan_id = vlan_id; _notify((NMDeviceVlan *) device, PROP_VLAN_ID); } return TRUE; } static void unrealize_notify(NMDevice *device) { NMDeviceVlan *self = NM_DEVICE_VLAN(device); NMDeviceVlanPrivate *priv = NM_DEVICE_VLAN_GET_PRIVATE(self); NM_DEVICE_CLASS(nm_device_vlan_parent_class)->unrealize_notify(device); if (priv->vlan_id != 0) { priv->vlan_id = 0; _notify(self, PROP_VLAN_ID); } } /*****************************************************************************/ static NMDeviceCapabilities get_generic_capabilities(NMDevice *device) { /* We assume VLAN interfaces always support carrier detect */ return NM_DEVICE_CAP_CARRIER_DETECT | NM_DEVICE_CAP_IS_SOFTWARE; } /*****************************************************************************/ static gboolean check_connection_compatible(NMDevice *device, NMConnection *connection, gboolean check_properties, GError **error) { NMDeviceVlanPrivate *priv = NM_DEVICE_VLAN_GET_PRIVATE(device); NMSettingVlan *s_vlan; const char *parent; if (!NM_DEVICE_CLASS(nm_device_vlan_parent_class) ->check_connection_compatible(device, connection, check_properties, error)) return FALSE; if (check_properties && nm_device_is_real(device)) { s_vlan = nm_connection_get_setting_vlan(connection); if (nm_setting_vlan_get_id(s_vlan) != priv->vlan_id) { nm_utils_error_set_literal(error, NM_UTILS_ERROR_CONNECTION_AVAILABLE_TEMPORARY, "vlan id setting mismatches"); return FALSE; } /* Check parent interface; could be an interface name or a UUID */ parent = nm_setting_vlan_get_parent(s_vlan); if (parent) { if (!nm_device_match_parent(device, parent)) { nm_utils_error_set_literal(error, NM_UTILS_ERROR_CONNECTION_AVAILABLE_TEMPORARY, "vlan parent setting differs"); return FALSE; } } else { /* Parent could be a MAC address in an NMSettingWired */ if (!nm_device_match_parent_hwaddr(device, connection, TRUE)) { nm_utils_error_set_literal(error, NM_UTILS_ERROR_CONNECTION_AVAILABLE_TEMPORARY, "vlan parent mac setting differs"); return FALSE; } } } return TRUE; } static gboolean check_connection_available(NMDevice *device, NMConnection *connection, NMDeviceCheckConAvailableFlags flags, const char *specific_object, GError **error) { if (!nm_device_is_real(device)) return TRUE; return NM_DEVICE_CLASS(nm_device_vlan_parent_class) ->check_connection_available(device, connection, flags, specific_object, error); } static gboolean complete_connection(NMDevice *device, NMConnection *connection, const char *specific_object, NMConnection *const *existing_connections, GError **error) { NMSettingVlan *s_vlan; nm_utils_complete_generic(nm_device_get_platform(device), connection, NM_SETTING_VLAN_SETTING_NAME, existing_connections, NULL, _("VLAN connection"), NULL, NULL); s_vlan = nm_connection_get_setting_vlan(connection); if (!s_vlan) { g_set_error_literal(error, NM_DEVICE_ERROR, NM_DEVICE_ERROR_INVALID_CONNECTION, "A 'vlan' setting is required."); return FALSE; } /* If there's no VLAN interface, no parent, and no hardware address in the * settings, then there's not enough information to complete the setting. */ if (!nm_setting_vlan_get_parent(s_vlan) && !nm_device_match_parent_hwaddr(device, connection, TRUE)) { g_set_error_literal( error, NM_DEVICE_ERROR, NM_DEVICE_ERROR_INVALID_CONNECTION, "The 'vlan' setting had no interface name, parent, or hardware address."); return FALSE; } return TRUE; } static void update_connection(NMDevice *device, NMConnection *connection) { NMDeviceVlanPrivate *priv = NM_DEVICE_VLAN_GET_PRIVATE(device); NMSettingVlan *s_vlan = _nm_connection_ensure_setting(connection, NM_TYPE_SETTING_VLAN); int ifindex = nm_device_get_ifindex(device); const NMPlatformLink *plink; const NMPObject *polnk; guint vlan_id; _NMVlanFlags vlan_flags; polnk = nm_platform_link_get_lnk(nm_device_get_platform(device), ifindex, NM_LINK_TYPE_VLAN, &plink); if (polnk) vlan_id = polnk->lnk_vlan.id; else vlan_id = priv->vlan_id; if (vlan_id != nm_setting_vlan_get_id(s_vlan)) g_object_set(s_vlan, NM_SETTING_VLAN_ID, vlan_id, NULL); g_object_set(s_vlan, NM_SETTING_VLAN_PARENT, nm_device_parent_find_for_connection(device, nm_setting_vlan_get_parent(s_vlan)), NULL); if (polnk) vlan_flags = polnk->lnk_vlan.flags; else vlan_flags = _NM_VLAN_FLAG_REORDER_HEADERS; if (NM_VLAN_FLAGS_CAST(vlan_flags) != nm_setting_vlan_get_flags(s_vlan)) g_object_set(s_vlan, NM_SETTING_VLAN_FLAGS, NM_VLAN_FLAGS_CAST(vlan_flags), NULL); if (polnk) { _nm_setting_vlan_set_priorities(s_vlan, NM_VLAN_INGRESS_MAP, polnk->_lnk_vlan.ingress_qos_map, polnk->_lnk_vlan.n_ingress_qos_map); _nm_setting_vlan_set_priorities(s_vlan, NM_VLAN_EGRESS_MAP, polnk->_lnk_vlan.egress_qos_map, polnk->_lnk_vlan.n_egress_qos_map); } else { _nm_setting_vlan_set_priorities(s_vlan, NM_VLAN_INGRESS_MAP, NULL, 0); _nm_setting_vlan_set_priorities(s_vlan, NM_VLAN_EGRESS_MAP, NULL, 0); } if (polnk && polnk->lnk_vlan.protocol == ETH_P_8021AD) g_object_set(s_vlan, NM_SETTING_VLAN_PROTOCOL, "802.1ad", NULL); } static NMActStageReturn act_stage1_prepare(NMDevice *device, NMDeviceStateReason *out_failure_reason) { NMDevice *parent_device; NMSettingVlan *s_vlan; /* Change MAC address to parent's one if needed */ parent_device = nm_device_parent_get_device(device); if (parent_device) { parent_hwaddr_maybe_changed(parent_device, NULL, device); parent_mtu_maybe_changed(parent_device, NULL, device); } s_vlan = nm_device_get_applied_setting(device, NM_TYPE_SETTING_VLAN); if (s_vlan) { gs_free NMVlanQosMapping *ingress_map = NULL; gs_free NMVlanQosMapping *egress_map = NULL; guint n_ingress_map = 0; guint n_egress_map = 0; _nm_setting_vlan_get_priorities(s_vlan, NM_VLAN_INGRESS_MAP, &ingress_map, &n_ingress_map); _nm_setting_vlan_get_priorities(s_vlan, NM_VLAN_EGRESS_MAP, &egress_map, &n_egress_map); nm_platform_link_vlan_change(nm_device_get_platform(device), nm_device_get_ifindex(device), _NM_VLAN_FLAGS_ALL, nm_setting_vlan_get_flags(s_vlan), TRUE, ingress_map, n_ingress_map, TRUE, egress_map, n_egress_map); } return NM_ACT_STAGE_RETURN_SUCCESS; } /*****************************************************************************/ static void get_property(GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { NMDeviceVlanPrivate *priv = NM_DEVICE_VLAN_GET_PRIVATE(object); switch (prop_id) { case PROP_VLAN_ID: g_value_set_uint(value, priv->vlan_id); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID(object, prop_id, pspec); break; } } /*****************************************************************************/ static void nm_device_vlan_init(NMDeviceVlan *self) {} static const NMDBusInterfaceInfoExtended interface_info_device_vlan = { .parent = NM_DEFINE_GDBUS_INTERFACE_INFO_INIT( NM_DBUS_INTERFACE_DEVICE_VLAN, .properties = NM_DEFINE_GDBUS_PROPERTY_INFOS( NM_DEFINE_DBUS_PROPERTY_INFO_EXTENDED_READABLE( "HwAddress", "s", NM_DEVICE_HW_ADDRESS, .annotations = NM_GDBUS_ANNOTATION_INFO_LIST_DEPRECATED(), ), NM_DEFINE_DBUS_PROPERTY_INFO_EXTENDED_READABLE( "Carrier", "b", NM_DEVICE_CARRIER, .annotations = NM_GDBUS_ANNOTATION_INFO_LIST_DEPRECATED(), ), NM_DEFINE_DBUS_PROPERTY_INFO_EXTENDED_READABLE("Parent", "o", NM_DEVICE_PARENT), NM_DEFINE_DBUS_PROPERTY_INFO_EXTENDED_READABLE("VlanId", "u", NM_DEVICE_VLAN_ID), ), ), }; static void nm_device_vlan_class_init(NMDeviceVlanClass *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_vlan); device_class->connection_type_supported = NM_SETTING_VLAN_SETTING_NAME; device_class->connection_type_check_compatible = NM_SETTING_VLAN_SETTING_NAME; device_class->link_types = NM_DEVICE_DEFINE_LINK_TYPES(NM_LINK_TYPE_VLAN); device_class->mtu_parent_delta = 0; /* VLANs can have the same MTU of parent */ device_class->create_and_realize = create_and_realize; device_class->link_changed = link_changed; device_class->unrealize_notify = unrealize_notify; device_class->get_generic_capabilities = get_generic_capabilities; device_class->act_stage1_prepare_set_hwaddr_ethernet = TRUE; device_class->act_stage1_prepare = act_stage1_prepare; device_class->get_configured_mtu = nm_device_get_configured_mtu_wired_parent; device_class->parent_changed_notify = parent_changed_notify; device_class->check_connection_compatible = check_connection_compatible; device_class->check_connection_available = check_connection_available; device_class->complete_connection = complete_connection; device_class->update_connection = update_connection; obj_properties[PROP_VLAN_ID] = g_param_spec_uint(NM_DEVICE_VLAN_ID, "", "", 0, 4095, 0, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS); g_object_class_install_properties(object_class, _PROPERTY_ENUMS_LAST, obj_properties); } /*****************************************************************************/ #define NM_TYPE_VLAN_DEVICE_FACTORY (nm_vlan_device_factory_get_type()) #define NM_VLAN_DEVICE_FACTORY(obj) \ (_NM_G_TYPE_CHECK_INSTANCE_CAST((obj), NM_TYPE_VLAN_DEVICE_FACTORY, NMVlanDeviceFactory)) static NMDevice * create_device(NMDeviceFactory *factory, const char *iface, const NMPlatformLink *plink, NMConnection *connection, gboolean *out_ignore) { return g_object_new(NM_TYPE_DEVICE_VLAN, NM_DEVICE_IFACE, iface, NM_DEVICE_DRIVER, "8021q", NM_DEVICE_TYPE_DESC, "VLAN", NM_DEVICE_DEVICE_TYPE, NM_DEVICE_TYPE_VLAN, NM_DEVICE_LINK_TYPE, NM_LINK_TYPE_VLAN, NULL); } static const char * get_connection_parent(NMDeviceFactory *factory, NMConnection *connection) { NMSettingVlan *s_vlan; NMSettingWired *s_wired; const char *parent = NULL; g_return_val_if_fail(nm_connection_is_type(connection, NM_SETTING_VLAN_SETTING_NAME), NULL); s_vlan = nm_connection_get_setting_vlan(connection); if (s_vlan) { parent = nm_setting_vlan_get_parent(s_vlan); if (parent) return parent; } /* Try the hardware address from the VLAN connection's hardware setting */ s_wired = nm_connection_get_setting_wired(connection); if (s_wired) return nm_setting_wired_get_mac_address(s_wired); else return NULL; } static char * get_connection_iface(NMDeviceFactory *factory, NMConnection *connection, const char *parent_iface) { NMSettingVlan *s_vlan; g_return_val_if_fail(nm_connection_is_type(connection, NM_SETTING_VLAN_SETTING_NAME), NULL); if (!parent_iface) return NULL; s_vlan = nm_connection_get_setting_vlan(connection); if (s_vlan) return nmp_utils_new_vlan_name(parent_iface, nm_setting_vlan_get_id(s_vlan)); else return NULL; } NM_DEVICE_FACTORY_DEFINE_INTERNAL( VLAN, Vlan, vlan, NM_DEVICE_FACTORY_DECLARE_LINK_TYPES(NM_LINK_TYPE_VLAN) NM_DEVICE_FACTORY_DECLARE_SETTING_TYPES(NM_SETTING_VLAN_SETTING_NAME), factory_class->create_device = create_device; factory_class->get_connection_parent = get_connection_parent; factory_class->get_connection_iface = get_connection_iface;);