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
8MODULE_DESCRIPTION("Xtables: packet flow tracing");
9MODULE_LICENSE("GPL");
10MODULE_ALIAS("ipt_TRACE");
11MODULE_ALIAS("ip6t_TRACE");
12
13static unsigned int
14trace_tg(struct sk_buff *skb, const struct xt_action_param *par)
15{
16	skb->nf_trace = 1;
17	return XT_CONTINUE;
18}
19
20static struct xt_target trace_tg_reg __read_mostly = {
21	.name       = "TRACE",
22	.revision   = 0,
23	.family     = NFPROTO_UNSPEC,
24	.table      = "raw",
25	.target     = trace_tg,
26	.me         = THIS_MODULE,
27};
28
29static int __init trace_tg_init(void)
30{
31	return xt_register_target(&trace_tg_reg);
32}
33
34static void __exit trace_tg_exit(void)
35{
36	xt_unregister_target(&trace_tg_reg);
37}
38
39module_init(trace_tg_init);
40module_exit(trace_tg_exit);
41