bridge: Check return of dev_set_promiscuity
[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 int __init br_init(void)
32 {
33         int err;
34
35         err = stp_proto_register(&br_stp_proto);
36         if (err < 0) {
37                 printk(KERN_ERR "bridge: can't register sap for STP\n");
38                 return err;
39         }
40
41         err = br_fdb_init();
42         if (err)
43                 goto err_out;
44
45         err = br_netfilter_init();
46         if (err)
47                 goto err_out1;
48
49         err = register_netdevice_notifier(&br_device_notifier);
50         if (err)
51                 goto err_out2;
52
53         err = br_netlink_init();
54         if (err)
55                 goto err_out3;
56
57         brioctl_set(br_ioctl_deviceless_stub);
58         br_handle_frame_hook = br_handle_frame;
59
60         br_fdb_get_hook = br_fdb_get;
61         br_fdb_put_hook = br_fdb_put;
62
63         return 0;
64 err_out3:
65         unregister_netdevice_notifier(&br_device_notifier);
66 err_out2:
67         br_netfilter_fini();
68 err_out1:
69         br_fdb_fini();
70 err_out:
71         stp_proto_unregister(&br_stp_proto);
72         return err;
73 }
74
75 static void __exit br_deinit(void)
76 {
77         stp_proto_unregister(&br_stp_proto);
78
79         br_netlink_fini();
80         unregister_netdevice_notifier(&br_device_notifier);
81         brioctl_set(NULL);
82
83         br_cleanup_bridges();
84
85         synchronize_net();
86
87         br_netfilter_fini();
88         br_fdb_get_hook = NULL;
89         br_fdb_put_hook = NULL;
90
91         br_handle_frame_hook = NULL;
92         br_fdb_fini();
93 }
94
95 EXPORT_SYMBOL(br_should_route_hook);
96
97 module_init(br_init)
98 module_exit(br_deinit)
99 MODULE_LICENSE("GPL");
100 MODULE_VERSION(BR_VERSION);