Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
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#include <net/netfilter/nf_log.h>
8
9MODULE_DESCRIPTION("Xtables: packet flow tracing");
10MODULE_LICENSE("GPL");
11MODULE_ALIAS("ipt_TRACE");
12MODULE_ALIAS("ip6t_TRACE");
13
14static int trace_tg_check(const struct xt_tgchk_param *par)
15{
16 return nf_logger_find_get(par->family, NF_LOG_TYPE_LOG);
17}
18
19static void trace_tg_destroy(const struct xt_tgdtor_param *par)
20{
21 nf_logger_put(par->family, NF_LOG_TYPE_LOG);
22}
23
24static unsigned int
25trace_tg(struct sk_buff *skb, const struct xt_action_param *par)
26{
27 skb->nf_trace = 1;
28 return XT_CONTINUE;
29}
30
31static struct xt_target trace_tg_reg __read_mostly = {
32 .name = "TRACE",
33 .revision = 0,
34 .family = NFPROTO_UNSPEC,
35 .table = "raw",
36 .target = trace_tg,
37 .checkentry = trace_tg_check,
38 .destroy = trace_tg_destroy,
39 .me = THIS_MODULE,
40};
41
42static int __init trace_tg_init(void)
43{
44 return xt_register_target(&trace_tg_reg);
45}
46
47static void __exit trace_tg_exit(void)
48{
49 xt_unregister_target(&trace_tg_reg);
50}
51
52module_init(trace_tg_init);
53module_exit(trace_tg_exit);