tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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 net_device *in,
15 const struct net_device *out, unsigned int hooknum,
16 const struct xt_target *target, const void *targinfo)
17{
18 skb->nf_trace = 1;
19 return XT_CONTINUE;
20}
21
22static struct xt_target trace_tg_reg[] __read_mostly = {
23 {
24 .name = "TRACE",
25 .family = AF_INET,
26 .target = trace_tg,
27 .table = "raw",
28 .me = THIS_MODULE,
29 },
30 {
31 .name = "TRACE",
32 .family = AF_INET6,
33 .target = trace_tg,
34 .table = "raw",
35 .me = THIS_MODULE,
36 },
37};
38
39static int __init trace_tg_init(void)
40{
41 return xt_register_targets(trace_tg_reg, ARRAY_SIZE(trace_tg_reg));
42}
43
44static void __exit trace_tg_exit(void)
45{
46 xt_unregister_targets(trace_tg_reg, ARRAY_SIZE(trace_tg_reg));
47}
48
49module_init(trace_tg_init);
50module_exit(trace_tg_exit);