/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * Copyright (C) 2017 Red Hat, Inc.
 */

#include "src/core/nm-default-daemon.h"

#include "nm-device-ovs-bridge.h"

#include "nm-device-ovs-interface.h"
#include "nm-device-ovs-port.h"
#include "nm-ovsdb.h"

#include "devices/nm-device-private.h"
#include "nm-active-connection.h"
#include "nm-setting-connection.h"
#include "nm-setting-ovs-bridge.h"
#include "nm-setting-ovs-external-ids.h"
#include "nm-setting-ovs-other-config.h"
#include "libnm-core-intern/nm-core-internal.h"

#define _NMLOG_DEVICE_TYPE NMDeviceOvsBridge
#include "devices/nm-device-logging.h"

/*****************************************************************************/

struct _NMDeviceOvsBridge {
    NMDevice parent;
};

struct _NMDeviceOvsBridgeClass {
    NMDeviceClass parent;
};

G_DEFINE_TYPE(NMDeviceOvsBridge, nm_device_ovs_bridge, NM_TYPE_DEVICE)

/*****************************************************************************/

static const char *
get_type_description(NMDevice *device)
{
    return "ovs-bridge";
}

static gboolean
create_and_realize(NMDevice              *device,
                   NMConnection          *connection,
                   NMDevice              *parent,
                   const NMPlatformLink **out_plink,
                   GError               **error)
{
    /* The actual backing resources will be created on attachment by the port
     * when it can identify the port and the bridge. */

    return TRUE;
}

static gboolean
unrealize(NMDevice *device, GError **error)
{
    return TRUE;
}

static NMDeviceCapabilities
get_generic_capabilities(NMDevice *device)
{
    return NM_DEVICE_CAP_IS_SOFTWARE;
}

static gboolean
ready_for_ip_config(NMDevice *device, gboolean is_manual)
{
    return FALSE;
}

static void
act_stage3_ip_config(NMDevice *device, int addr_family)
{
    nm_device_devip_set_state(device, addr_family, NM_DEVICE_IP_STATE_READY, NULL);
}

static NMTernary
attach_port(NMDevice                  *device,
            NMDevice                  *port,
            NMConnection              *connection,
            gboolean                   configure,
            GCancellable              *cancellable,
            NMDeviceAttachPortCallback callback,
            gpointer                   user_data)
{
    if (!configure)
        return TRUE;

    if (!NM_IS_DEVICE_OVS_PORT(port))
        return FALSE;

    return TRUE;
}

static NMTernary
detach_port(NMDevice                  *device,
            NMDevice                  *port,
            gboolean                   configure,
            GCancellable              *cancellable,
            NMDeviceAttachPortCallback callback,
            gpointer                   user_data)
{
    return TRUE;
}

void
nm_device_ovs_reapply_connection(NMDevice *self, NMConnection *con_old, NMConnection *con_new)
{
    NMDeviceType device_type;
    GType        type;

    nm_assert(NM_IS_DEVICE(self));
    nm_assert(g_type_parent(G_TYPE_FROM_INSTANCE(self)) == NM_TYPE_DEVICE);

    /* NMDevice's reapply_connection() doesn't do anything. No need to call the parent
     * implementation. */

    _LOGD(LOGD_DEVICE, "reapplying settings for OVS device");

    type = G_OBJECT_TYPE(self);
    if (type == NM_TYPE_DEVICE_OVS_INTERFACE)
        device_type = NM_DEVICE_TYPE_OVS_INTERFACE;
    else if (type == NM_TYPE_DEVICE_OVS_PORT)
        device_type = NM_DEVICE_TYPE_OVS_PORT;
    else {
        nm_assert(type == NM_TYPE_DEVICE_OVS_BRIDGE);
        device_type = NM_DEVICE_TYPE_OVS_BRIDGE;
    }

    nm_ovsdb_set_reapply(nm_ovsdb_get(),
                         device_type,
                         nm_device_get_ip_iface(self),
                         nm_simple_connection_new_clone(con_new),
                         _nm_connection_get_setting(con_old, NM_TYPE_SETTING_OVS_EXTERNAL_IDS),
                         _nm_connection_get_setting(con_new, NM_TYPE_SETTING_OVS_EXTERNAL_IDS),
                         _nm_connection_get_setting(con_old, NM_TYPE_SETTING_OVS_OTHER_CONFIG),
                         _nm_connection_get_setting(con_new, NM_TYPE_SETTING_OVS_OTHER_CONFIG));
}

static gboolean
can_reapply_change(NMDevice   *device,
                   const char *setting_name,
                   NMSetting  *s_old,
                   NMSetting  *s_new,
                   GHashTable *diffs,
                   GError    **error)
{
    NMDeviceClass *device_class = NM_DEVICE_CLASS(nm_device_ovs_bridge_parent_class);

    if (nm_streq(setting_name, NM_SETTING_OVS_BRIDGE_SETTING_NAME)) {
        return nm_device_hash_check_invalid_keys(diffs,
                                                 NM_SETTING_OVS_BRIDGE_SETTING_NAME,
                                                 error,
                                                 NM_SETTING_OVS_BRIDGE_FAIL_MODE,
                                                 NM_SETTING_OVS_BRIDGE_MCAST_SNOOPING_ENABLE,
                                                 NM_SETTING_OVS_BRIDGE_RSTP_ENABLE,
                                                 NM_SETTING_OVS_BRIDGE_STP_ENABLE);
    }

    if (NM_IN_STRSET(setting_name,
                     NM_SETTING_OVS_EXTERNAL_IDS_SETTING_NAME,
                     NM_SETTING_OVS_OTHER_CONFIG_SETTING_NAME))
        return TRUE;

    return device_class->can_reapply_change(device, setting_name, s_old, s_new, diffs, error);
}

/*****************************************************************************/

static void
nm_device_ovs_bridge_init(NMDeviceOvsBridge *self)
{}

static const NMDBusInterfaceInfoExtended interface_info_device_ovs_bridge = {
    .parent = NM_DEFINE_GDBUS_INTERFACE_INFO_INIT(
        NM_DBUS_INTERFACE_DEVICE_OVS_BRIDGE,
        .properties = NM_DEFINE_GDBUS_PROPERTY_INFOS(
            NM_DEFINE_DBUS_PROPERTY_INFO_EXTENDED_READABLE(
                "Slaves",
                "ao",
                NM_DEVICE_SLAVES,
                .annotations = NM_GDBUS_ANNOTATION_INFO_LIST_DEPRECATED(), ), ), ),
};

static void
nm_device_ovs_bridge_class_init(NMDeviceOvsBridgeClass *klass)
{
    NMDBusObjectClass *dbus_object_class = NM_DBUS_OBJECT_CLASS(klass);
    NMDeviceClass     *device_class      = NM_DEVICE_CLASS(klass);

    dbus_object_class->interface_infos = NM_DBUS_INTERFACE_INFOS(&interface_info_device_ovs_bridge);

    device_class->connection_type_supported        = NM_SETTING_OVS_BRIDGE_SETTING_NAME;
    device_class->connection_type_check_compatible = NM_SETTING_OVS_BRIDGE_SETTING_NAME;
    device_class->link_types                       = NM_DEVICE_DEFINE_LINK_TYPES();

    device_class->is_controller            = TRUE;
    device_class->get_type_description     = get_type_description;
    device_class->create_and_realize       = create_and_realize;
    device_class->unrealize                = unrealize;
    device_class->get_generic_capabilities = get_generic_capabilities;
    device_class->act_stage3_ip_config     = act_stage3_ip_config;
    device_class->ready_for_ip_config      = ready_for_ip_config;
    device_class->attach_port              = attach_port;
    device_class->detach_port              = detach_port;
    device_class->can_reapply_change       = can_reapply_change;
    device_class->reapply_connection       = nm_device_ovs_reapply_connection;
}