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awilliam
GitHub Repository: awilliam/linux-vfio
 Path: blob/master/net/bridge/br.c
15111 views
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/*

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 *	Generic parts

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 *	Linux ethernet bridge

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 *

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 *	Authors:

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 *	Lennert Buytenhek		<[email protected]>

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 *

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 *	This program is free software; you can redistribute it and/or

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 *	modify it under the terms of the GNU General Public License

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 *	as published by the Free Software Foundation; either version

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 *	2 of the License, or (at your option) any later version.

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 */

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#include <linux/module.h>

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#include <linux/kernel.h>

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#include <linux/netdevice.h>

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#include <linux/etherdevice.h>

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#include <linux/init.h>

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#include <linux/llc.h>

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#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 = {

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	.rcv	= br_stp_rcv,

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};

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static struct pernet_operations br_net_ops = {

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	.exit	= br_net_exit,

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};

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static int __init br_init(void)

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{

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	int err;

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	err = stp_proto_register(&br_stp_proto);

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	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();

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	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)

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		goto err_out1;

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	err = br_netfilter_init();

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	if (err)

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		goto err_out2;

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	err = register_netdevice_notifier(&br_device_notifier);

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	if (err)

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		goto err_out3;

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	err = br_netlink_init();

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	if (err)

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		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)

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	br_fdb_test_addr_hook = br_fdb_test_addr;

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#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:

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	unregister_pernet_subsys(&br_net_ops);

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err_out1:

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	br_fdb_fini();

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err_out:

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	stp_proto_unregister(&br_stp_proto);

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	return err;

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}

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static void __exit br_deinit(void)

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{

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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);

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	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)

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	br_fdb_test_addr_hook = NULL;

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#endif

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	br_fdb_fini();

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}

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module_init(br_init)

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module_exit(br_deinit)

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MODULE_LICENSE("GPL");

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MODULE_VERSION(BR_VERSION);

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MODULE_ALIAS_RTNL_LINK("bridge");

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