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960649d1 PNA |
1 | /* |
2 | * (C) 2014 by Pablo Neira Ayuso <pablo@netfilter.org> | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License version 2 as | |
6 | * published by the Free Software Foundation. | |
7 | */ | |
8 | ||
9 | #include <linux/module.h> | |
10 | #include <linux/spinlock.h> | |
11 | #include <linux/skbuff.h> | |
12 | #include <linux/if_bridge.h> | |
13 | #include <linux/ip.h> | |
14 | #include <net/route.h> | |
15 | ||
16 | #include <linux/netfilter.h> | |
17 | #include <net/netfilter/nf_log.h> | |
18 | ||
19 | static void nf_log_bridge_packet(struct net *net, u_int8_t pf, | |
20 | unsigned int hooknum, | |
21 | const struct sk_buff *skb, | |
22 | const struct net_device *in, | |
23 | const struct net_device *out, | |
24 | const struct nf_loginfo *loginfo, | |
25 | const char *prefix) | |
26 | { | |
1fddf4ba | 27 | nf_log_l2packet(net, pf, hooknum, skb, in, out, loginfo, prefix); |
960649d1 PNA |
28 | } |
29 | ||
30 | static struct nf_logger nf_bridge_logger __read_mostly = { | |
31 | .name = "nf_log_bridge", | |
32 | .type = NF_LOG_TYPE_LOG, | |
33 | .logfn = nf_log_bridge_packet, | |
34 | .me = THIS_MODULE, | |
35 | }; | |
36 | ||
37 | static int __net_init nf_log_bridge_net_init(struct net *net) | |
38 | { | |
779994fa | 39 | return nf_log_set(net, NFPROTO_BRIDGE, &nf_bridge_logger); |
960649d1 PNA |
40 | } |
41 | ||
42 | static void __net_exit nf_log_bridge_net_exit(struct net *net) | |
43 | { | |
44 | nf_log_unset(net, &nf_bridge_logger); | |
45 | } | |
46 | ||
47 | static struct pernet_operations nf_log_bridge_net_ops = { | |
48 | .init = nf_log_bridge_net_init, | |
49 | .exit = nf_log_bridge_net_exit, | |
50 | }; | |
51 | ||
52 | static int __init nf_log_bridge_init(void) | |
53 | { | |
54 | int ret; | |
55 | ||
56 | /* Request to load the real packet loggers. */ | |
57 | nf_logger_request_module(NFPROTO_IPV4, NF_LOG_TYPE_LOG); | |
58 | nf_logger_request_module(NFPROTO_IPV6, NF_LOG_TYPE_LOG); | |
59 | nf_logger_request_module(NFPROTO_ARP, NF_LOG_TYPE_LOG); | |
60 | ||
61 | ret = register_pernet_subsys(&nf_log_bridge_net_ops); | |
62 | if (ret < 0) | |
63 | return ret; | |
64 | ||
65 | nf_log_register(NFPROTO_BRIDGE, &nf_bridge_logger); | |
66 | return 0; | |
67 | } | |
68 | ||
69 | static void __exit nf_log_bridge_exit(void) | |
70 | { | |
71 | unregister_pernet_subsys(&nf_log_bridge_net_ops); | |
72 | nf_log_unregister(&nf_bridge_logger); | |
73 | } | |
74 | ||
75 | module_init(nf_log_bridge_init); | |
76 | module_exit(nf_log_bridge_exit); | |
77 | ||
78 | MODULE_AUTHOR("Pablo Neira Ayuso <pablo@netfilter.org>"); | |
79 | MODULE_DESCRIPTION("Netfilter bridge packet logging"); | |
80 | MODULE_LICENSE("GPL"); | |
81 | MODULE_ALIAS_NF_LOGGER(AF_BRIDGE, 0); |