Merge branch 'master' into for-upstream
[linux-2.6] / net / bridge / br.c
1 /*
2  *      Generic parts
3  *      Linux ethernet bridge
4  *
5  *      Authors:
6  *      Lennert Buytenhek               <buytenh@gnu.org>
7  *
8  *      This program is free software; you can redistribute it and/or
9  *      modify it under the terms of the GNU General Public License
10  *      as published by the Free Software Foundation; either version
11  *      2 of the License, or (at your option) any later version.
12  */
13
14 #include <linux/module.h>
15 #include <linux/kernel.h>
16 #include <linux/netdevice.h>
17 #include <linux/etherdevice.h>
18 #include <linux/init.h>
19 #include <linux/llc.h>
20 #include <net/llc.h>
21 #include <net/stp.h>
22
23 #include "br_private.h"
24
25 int (*br_should_route_hook)(struct sk_buff *skb);
26
27 static const struct stp_proto br_stp_proto = {
28         .rcv    = br_stp_rcv,
29 };
30
31 static struct pernet_operations br_net_ops = {
32         .exit   = br_net_exit,
33 };
34
35 static int __init br_init(void)
36 {
37         int err;
38
39         err = stp_proto_register(&br_stp_proto);
40         if (err < 0) {
41                 printk(KERN_ERR "bridge: can't register sap for STP\n");
42                 return err;
43         }
44
45         err = br_fdb_init();
46         if (err)
47                 goto err_out;
48
49         err = register_pernet_subsys(&br_net_ops);
50         if (err)
51                 goto err_out1;
52
53         err = br_netfilter_init();
54         if (err)
55                 goto err_out2;
56
57         err = register_netdevice_notifier(&br_device_notifier);
58         if (err)
59                 goto err_out3;
60
61         err = br_netlink_init();
62         if (err)
63                 goto err_out4;
64
65         brioctl_set(br_ioctl_deviceless_stub);
66         br_handle_frame_hook = br_handle_frame;
67
68         br_fdb_get_hook = br_fdb_get;
69         br_fdb_put_hook = br_fdb_put;
70
71         return 0;
72 err_out4:
73         unregister_netdevice_notifier(&br_device_notifier);
74 err_out3:
75         br_netfilter_fini();
76 err_out2:
77         unregister_pernet_subsys(&br_net_ops);
78 err_out1:
79         br_fdb_fini();
80 err_out:
81         stp_proto_unregister(&br_stp_proto);
82         return err;
83 }
84
85 static void __exit br_deinit(void)
86 {
87         stp_proto_unregister(&br_stp_proto);
88
89         br_netlink_fini();
90         unregister_netdevice_notifier(&br_device_notifier);
91         brioctl_set(NULL);
92
93         unregister_pernet_subsys(&br_net_ops);
94
95         synchronize_net();
96
97         br_netfilter_fini();
98         br_fdb_get_hook = NULL;
99         br_fdb_put_hook = NULL;
100
101         br_handle_frame_hook = NULL;
102         br_fdb_fini();
103 }
104
105 EXPORT_SYMBOL(br_should_route_hook);
106
107 module_init(br_init)
108 module_exit(br_deinit)
109 MODULE_LICENSE("GPL");
110 MODULE_VERSION(BR_VERSION);