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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * Generic parts
3 * Linux ethernet bridge
4 *
5 * Authors:
6 * Lennert Buytenhek <buytenh@gnu.org>
7 *
8 * $Id: br.c,v 1.47 2001/12/24 00:56:41 davem Exp $
9 *
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public License
12 * as published by the Free Software Foundation; either version
13 * 2 of the License, or (at your option) any later version.
14 */
15
Linus Torvalds1da177e2005-04-16 15:20:36 -070016#include <linux/module.h>
17#include <linux/kernel.h>
18#include <linux/netdevice.h>
19#include <linux/etherdevice.h>
20#include <linux/init.h>
Stephen Hemmingercf0f02d2006-03-20 22:59:06 -080021#include <linux/llc.h>
22#include <net/llc.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070023
24#include "br_private.h"
25
Herbert Xu3db05fe2007-10-15 00:53:15 -070026int (*br_should_route_hook)(struct sk_buff *skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -070027
Stephen Hemmingercf0f02d2006-03-20 22:59:06 -080028static struct llc_sap *br_stp_sap;
29
Linus Torvalds1da177e2005-04-16 15:20:36 -070030static int __init br_init(void)
31{
Stephen Hemmingerc0909712006-05-25 15:59:33 -070032 int err;
33
Stephen Hemmingercf0f02d2006-03-20 22:59:06 -080034 br_stp_sap = llc_sap_open(LLC_SAP_BSPAN, br_stp_rcv);
35 if (!br_stp_sap) {
36 printk(KERN_ERR "bridge: can't register sap for STP\n");
Stephen Hemmingerc0909712006-05-25 15:59:33 -070037 return -EADDRINUSE;
Stephen Hemmingercf0f02d2006-03-20 22:59:06 -080038 }
39
Akinobu Mita87a596e2007-04-07 18:57:07 +090040 err = br_fdb_init();
41 if (err)
Pavel Emelyanov17efdd42007-11-29 23:41:43 +110042 goto err_out;
Linus Torvalds1da177e2005-04-16 15:20:36 -070043
Stephen Hemmingerc0909712006-05-25 15:59:33 -070044 err = br_netfilter_init();
45 if (err)
46 goto err_out1;
47
48 err = register_netdevice_notifier(&br_device_notifier);
49 if (err)
50 goto err_out2;
51
Thomas Graf32fe21c2007-03-22 11:59:03 -070052 err = br_netlink_init();
53 if (err)
54 goto err_out3;
55
Linus Torvalds1da177e2005-04-16 15:20:36 -070056 brioctl_set(br_ioctl_deviceless_stub);
57 br_handle_frame_hook = br_handle_frame;
58
59 br_fdb_get_hook = br_fdb_get;
60 br_fdb_put_hook = br_fdb_put;
61
Linus Torvalds1da177e2005-04-16 15:20:36 -070062 return 0;
Thomas Graf32fe21c2007-03-22 11:59:03 -070063err_out3:
64 unregister_netdevice_notifier(&br_device_notifier);
Stephen Hemmingerc0909712006-05-25 15:59:33 -070065err_out2:
66 br_netfilter_fini();
67err_out1:
Pavel Emelyanov17efdd42007-11-29 23:41:43 +110068 br_fdb_fini();
69err_out:
Stephen Hemmingerc0909712006-05-25 15:59:33 -070070 llc_sap_put(br_stp_sap);
71 return err;
Linus Torvalds1da177e2005-04-16 15:20:36 -070072}
73
74static void __exit br_deinit(void)
75{
Stephen Hemminger387e2b02006-05-23 15:20:25 -070076 rcu_assign_pointer(br_stp_sap->rcv_func, NULL);
Stephen Hemmingercf0f02d2006-03-20 22:59:06 -080077
Stephen Hemminger11dc1f32006-05-25 16:00:12 -070078 br_netlink_fini();
Linus Torvalds1da177e2005-04-16 15:20:36 -070079 br_netfilter_fini();
Linus Torvalds1da177e2005-04-16 15:20:36 -070080 unregister_netdevice_notifier(&br_device_notifier);
81 brioctl_set(NULL);
82
83 br_cleanup_bridges();
84
85 synchronize_net();
86
Stephen Hemminger387e2b02006-05-23 15:20:25 -070087 llc_sap_put(br_stp_sap);
Linus Torvalds1da177e2005-04-16 15:20:36 -070088 br_fdb_get_hook = NULL;
89 br_fdb_put_hook = NULL;
90
91 br_handle_frame_hook = NULL;
92 br_fdb_fini();
93}
94
95EXPORT_SYMBOL(br_should_route_hook);
96
97module_init(br_init)
98module_exit(br_deinit)
99MODULE_LICENSE("GPL");
Stephen Hemminger8cbb512e2005-12-21 19:01:30 -0800100MODULE_VERSION(BR_VERSION);