Commit | Line | Data |
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ba9dda3a JK |
1 | /* This is a module which is used to mark packets for tracing. |
2 | */ | |
3 | #include <linux/module.h> | |
4 | #include <linux/skbuff.h> | |
5 | ||
6 | #include <linux/netfilter/x_tables.h> | |
7 | ||
2ae15b64 | 8 | MODULE_DESCRIPTION("Xtables: packet flow tracing"); |
ba9dda3a JK |
9 | MODULE_LICENSE("GPL"); |
10 | MODULE_ALIAS("ipt_TRACE"); | |
11 | MODULE_ALIAS("ip6t_TRACE"); | |
12 | ||
13 | static unsigned int | |
d3c5ee6d JE |
14 | trace_tg(struct sk_buff *skb, const struct net_device *in, |
15 | const struct net_device *out, unsigned int hooknum, | |
16 | const struct xt_target *target, const void *targinfo) | |
ba9dda3a | 17 | { |
3db05fea | 18 | skb->nf_trace = 1; |
ba9dda3a JK |
19 | return XT_CONTINUE; |
20 | } | |
21 | ||
d3c5ee6d | 22 | static struct xt_target trace_tg_reg[] __read_mostly = { |
ba9dda3a JK |
23 | { |
24 | .name = "TRACE", | |
25 | .family = AF_INET, | |
d3c5ee6d | 26 | .target = trace_tg, |
ba9dda3a JK |
27 | .table = "raw", |
28 | .me = THIS_MODULE, | |
29 | }, | |
30 | { | |
31 | .name = "TRACE", | |
32 | .family = AF_INET6, | |
d3c5ee6d | 33 | .target = trace_tg, |
ba9dda3a JK |
34 | .table = "raw", |
35 | .me = THIS_MODULE, | |
36 | }, | |
37 | }; | |
38 | ||
d3c5ee6d | 39 | static int __init trace_tg_init(void) |
ba9dda3a | 40 | { |
d3c5ee6d | 41 | return xt_register_targets(trace_tg_reg, ARRAY_SIZE(trace_tg_reg)); |
ba9dda3a JK |
42 | } |
43 | ||
d3c5ee6d | 44 | static void __exit trace_tg_exit(void) |
ba9dda3a | 45 | { |
d3c5ee6d | 46 | xt_unregister_targets(trace_tg_reg, ARRAY_SIZE(trace_tg_reg)); |
ba9dda3a JK |
47 | } |
48 | ||
d3c5ee6d JE |
49 | module_init(trace_tg_init); |
50 | module_exit(trace_tg_exit); |