br.c 2.1 KB
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/*
 *	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>
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#include <linux/llc.h>
#include <net/llc.h>
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#include <net/stp.h>
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#include "br_private.h"

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static const struct stp_proto br_stp_proto = {
	.rcv	= br_stp_rcv,
};
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static struct pernet_operations br_net_ops = {
	.exit	= br_net_exit,
};

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static int __init br_init(void)
{
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	int err;

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

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

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

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

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

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	brioctl_set(br_ioctl_deviceless_stub);

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#if defined(CONFIG_ATM_LANE) || defined(CONFIG_ATM_LANE_MODULE)
	br_fdb_test_addr_hook = br_fdb_test_addr;
#endif
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	return 0;
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err_out4:
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	unregister_netdevice_notifier(&br_device_notifier);
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err_out3:
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	br_netfilter_fini();
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err_out2:
	unregister_pernet_subsys(&br_net_ops);
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err_out1:
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	br_fdb_fini();
err_out:
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	stp_proto_unregister(&br_stp_proto);
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	return err;
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}

static void __exit br_deinit(void)
{
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	stp_proto_unregister(&br_stp_proto);
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	br_netlink_fini();
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	unregister_netdevice_notifier(&br_device_notifier);
	brioctl_set(NULL);

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	unregister_pernet_subsys(&br_net_ops);
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	rcu_barrier(); /* Wait for completion of call_rcu()'s */
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	br_netfilter_fini();
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#if defined(CONFIG_ATM_LANE) || defined(CONFIG_ATM_LANE_MODULE)
	br_fdb_test_addr_hook = NULL;
#endif
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	br_fdb_fini();
}

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