New upstream version 1.29.90 upstream/1.29.90

1 files changed, 688 insertions, 0 deletions

diff --git a/src/core/devices/nm-device-vlan.c b/src/core/devices/nm-device-vlan.c
new file mode 100644
index 00000000..bfde60ef
--- /dev/null
+++ b/src/core/devices/nm-device-vlan.c
@@ -0,0 +1,688 @@
+/* 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 <sys/socket.h>
+
+#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 "nm-ip4-config.h"
+#include "platform/nm-platform.h"
+#include "nm-device-factory.h"
+#include "nm-manager.h"
+#include "nm-core-internal.h"
+#include "platform/nmp-object.h"
+
+#define _NMLOG_DEVICE_TYPE NMDeviceVlan
+#include "nm-device-logging.h"
+
+/*****************************************************************************/
+
+NM_GOBJECT_PROPERTIES_DEFINE(NMDeviceVlan, PROP_VLAN_ID, );
+
+typedef struct {
+    gulong parent_state_id;
+    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_state_changed(NMDevice *          parent,
+                     NMDeviceState       new_state,
+                     NMDeviceState       old_state,
+                     NMDeviceStateReason reason,
+                     gpointer            user_data)
+{
+    NMDeviceVlan *self = NM_DEVICE_VLAN(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_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 *       new_mac, *old_mac;
+    NMSettingIPConfig *s_ip6;
+
+    /* Never touch assumed devices */
+    if (nm_device_sys_iface_state_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);
+        nm_device_arp_announce(device);
+        /* When changing the hw address the interface is taken down,
+         * removing the IPv6 configuration; reapply it.
+         */
+        s_ip6 = nm_connection_get_setting_ip6_config(connection);
+        if (s_ip6)
+            nm_device_reactivate_ip_config(device, AF_INET6, s_ip6, s_ip6);
+    }
+}
+
+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);
+
+    /*  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);
+    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_state_id = g_signal_connect(new_parent,
+                                                 NM_DEVICE_STATE_CHANGED,
+                                                 G_CALLBACK(parent_state_changed),
+                                                 device);
+
+        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);
+
+        /* 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);
+    }
+
+    /* 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;
+
+    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);
+
+    r = nm_platform_link_vlan_add(nm_device_get_platform(device),
+                                  iface,
+                                  parent_ifindex,
+                                  vlan_id,
+                                  nm_setting_vlan_get_flags(s_vlan),
+                                  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
+is_available(NMDevice *device, NMDeviceCheckDevAvailableFlags flags)
+{
+    if (!nm_device_parent_get_device(device))
+        return FALSE;
+    return NM_DEVICE_CLASS(nm_device_vlan_parent_class)->is_available(device, flags);
+}
+
+/*****************************************************************************/
+
+static gboolean
+check_connection_compatible(NMDevice *device, NMConnection *connection, 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, error))
+        return FALSE;
+
+    if (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,
+                              TRUE);
+
+    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_get_setting_vlan(connection);
+    int                   ifindex = nm_device_get_ifindex(device);
+    const NMPlatformLink *plink;
+    const NMPObject *     polnk;
+    guint                 vlan_id;
+    guint                 vlan_flags;
+
+    if (!s_vlan) {
+        s_vlan = (NMSettingVlan *) nm_setting_vlan_new();
+        nm_connection_add_setting(connection, (NMSetting *) s_vlan);
+    }
+
+    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 (vlan_flags != nm_setting_vlan_get_flags(s_vlan))
+        g_object_set(s_vlan, NM_SETTING_VLAN_FLAGS, (NMVlanFlags) 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);
+    }
+}
+
+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,
+        .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("HwAddress",
+                                                             "s",
+                                                             NM_DEVICE_HW_ADDRESS),
+            NM_DEFINE_DBUS_PROPERTY_INFO_EXTENDED_READABLE_L("Carrier", "b", NM_DEVICE_CARRIER),
+            NM_DEFINE_DBUS_PROPERTY_INFO_EXTENDED_READABLE_L("Parent", "o", NM_DEVICE_PARENT),
+            NM_DEFINE_DBUS_PROPERTY_INFO_EXTENDED_READABLE_L("VlanId",
+                                                             "u",
+                                                             NM_DEVICE_VLAN_ID), ), ),
+    .legacy_property_changed = TRUE,
+};
+
+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->is_available          = is_available;
+    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) \
+    (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);
+    g_assert(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);
+
+    return NULL;
+}
+
+static char *
+get_connection_iface(NMDeviceFactory *factory, NMConnection *connection, const char *parent_iface)
+{
+    const char *   ifname;
+    NMSettingVlan *s_vlan;
+
+    g_return_val_if_fail(nm_connection_is_type(connection, NM_SETTING_VLAN_SETTING_NAME), NULL);
+
+    s_vlan = nm_connection_get_setting_vlan(connection);
+    g_assert(s_vlan);
+
+    if (!parent_iface)
+        return NULL;
+
+    ifname = nm_connection_get_interface_name(connection);
+    if (ifname)
+        return g_strdup(ifname);
+
+    /* If the connection doesn't specify the interface name for the VLAN
+     * device, we create one for it using the VLAN ID and the parent
+     * interface's name.
+     */
+    return nm_utils_new_vlan_name(parent_iface, nm_setting_vlan_get_id(s_vlan));
+}
+
+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;);