root/net/bridge/br.c

DEFINITIONS

1. br_init
2. br_deinit

/*
 *      Generic parts
 *      Linux ethernet bridge
 *
 *      Authors:
 *      Lennert Buytenhek               <buytenh@gnu.org>
 *
 *      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.
 */

#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/init.h>
#include <linux/llc.h>
#include <net/llc.h>
#include <net/stp.h>

#include "br_private.h"

int (*br_should_route_hook)(struct sk_buff *skb);

static const struct stp_proto br_stp_proto = {
        .rcv    = br_stp_rcv,
};

static struct pernet_operations br_net_ops = {
        .exit   = br_net_exit,
};

static int __init br_init(void)
{
        int err;

        err = stp_proto_register(&br_stp_proto);
        if (err < 0) {
                printk(KERN_ERR "bridge: can't register sap for STP\n");
                return err;
        }

        err = br_fdb_init();
        if (err)
                goto err_out;

        err = register_pernet_subsys(&br_net_ops);
        if (err)
                goto err_out1;

        err = br_netfilter_init();
        if (err)
                goto err_out2;

        err = register_netdevice_notifier(&br_device_notifier);
        if (err)
                goto err_out3;

        err = br_netlink_init();
        if (err)
                goto err_out4;

        brioctl_set(br_ioctl_deviceless_stub);
        br_handle_frame_hook = br_handle_frame;

        br_fdb_get_hook = br_fdb_get;
        br_fdb_put_hook = br_fdb_put;

        return 0;
err_out4:
        unregister_netdevice_notifier(&br_device_notifier);
err_out3:
        br_netfilter_fini();
err_out2:
        unregister_pernet_subsys(&br_net_ops);
err_out1:
        br_fdb_fini();
err_out:
        stp_proto_unregister(&br_stp_proto);
        return err;
}

static void __exit br_deinit(void)
{
        stp_proto_unregister(&br_stp_proto);

        br_netlink_fini();
        unregister_netdevice_notifier(&br_device_notifier);
        brioctl_set(NULL);

        unregister_pernet_subsys(&br_net_ops);

        synchronize_net();

        br_netfilter_fini();
        br_fdb_get_hook = NULL;
        br_fdb_put_hook = NULL;

        br_handle_frame_hook = NULL;
        br_fdb_fini();
}

EXPORT_SYMBOL(br_should_route_hook);

module_init(br_init)
module_exit(br_deinit)
MODULE_LICENSE("GPL");
MODULE_VERSION(BR_VERSION);