Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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
25static void __net_exit br_net_exit(struct net *net)
26{
27 struct net_device *dev;
28 LIST_HEAD(list);
29
30 rtnl_lock();
31 for_each_netdev(net, dev)
32 if (dev->priv_flags & IFF_EBRIDGE)
33 br_dev_delete(dev, &list);
34
35 unregister_netdevice_many(&list);
36 rtnl_unlock();
37
38}
39
40static struct pernet_operations br_net_ops = {
41 .exit = br_net_exit,
42};
43
44static const struct stp_proto br_stp_proto = {
45 .rcv = br_stp_rcv,
46};
47
48static int __init br_init(void)
49{
50 int err;
51
52 err = stp_proto_register(&br_stp_proto);
53 if (err < 0) {
54 pr_err("bridge: can't register sap for STP\n");
55 return err;
56 }
57
58 err = br_fdb_init();
59 if (err)
60 goto err_out;
61
62 err = register_pernet_subsys(&br_net_ops);
63 if (err)
64 goto err_out1;
65
66 err = br_netfilter_init();
67 if (err)
68 goto err_out2;
69
70 err = register_netdevice_notifier(&br_device_notifier);
71 if (err)
72 goto err_out3;
73
74 err = br_netlink_init();
75 if (err)
76 goto err_out4;
77
78 brioctl_set(br_ioctl_deviceless_stub);
79
80#if IS_ENABLED(CONFIG_ATM_LANE)
81 br_fdb_test_addr_hook = br_fdb_test_addr;
82#endif
83
84 return 0;
85err_out4:
86 unregister_netdevice_notifier(&br_device_notifier);
87err_out3:
88 br_netfilter_fini();
89err_out2:
90 unregister_pernet_subsys(&br_net_ops);
91err_out1:
92 br_fdb_fini();
93err_out:
94 stp_proto_unregister(&br_stp_proto);
95 return err;
96}
97
98static void __exit br_deinit(void)
99{
100 stp_proto_unregister(&br_stp_proto);
101
102 br_netlink_fini();
103 unregister_netdevice_notifier(&br_device_notifier);
104 brioctl_set(NULL);
105
106 unregister_pernet_subsys(&br_net_ops);
107
108 rcu_barrier(); /* Wait for completion of call_rcu()'s */
109
110 br_netfilter_fini();
111#if IS_ENABLED(CONFIG_ATM_LANE)
112 br_fdb_test_addr_hook = NULL;
113#endif
114
115 br_fdb_fini();
116}
117
118module_init(br_init)
119module_exit(br_deinit)
120MODULE_LICENSE("GPL");
121MODULE_VERSION(BR_VERSION);
122MODULE_ALIAS_RTNL_LINK("bridge");