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);

 1// SPDX-License-Identifier: GPL-2.0-only
 2/* This is a module which is used to mark packets for tracing.
 3 */
 4#include <linux/module.h>
 5#include <linux/skbuff.h>
 6
 7#include <linux/netfilter/x_tables.h>
 8#include <net/netfilter/nf_log.h>
 9
10MODULE_DESCRIPTION("Xtables: packet flow tracing");
11MODULE_LICENSE("GPL");
12MODULE_ALIAS("ipt_TRACE");
13MODULE_ALIAS("ip6t_TRACE");
14
15static int trace_tg_check(const struct xt_tgchk_param *par)
16{
17	return nf_logger_find_get(par->family, NF_LOG_TYPE_LOG);
18}
19
20static void trace_tg_destroy(const struct xt_tgdtor_param *par)
21{
22	nf_logger_put(par->family, NF_LOG_TYPE_LOG);
23}
24
25static unsigned int
26trace_tg(struct sk_buff *skb, const struct xt_action_param *par)
27{
28	skb->nf_trace = 1;
29	return XT_CONTINUE;
30}
31
32static struct xt_target trace_tg_reg[] __read_mostly = {
33	{
34		.name		= "TRACE",
35		.revision	= 0,
36		.family		= NFPROTO_IPV4,
37		.table		= "raw",
38		.target		= trace_tg,
39		.checkentry	= trace_tg_check,
40		.destroy	= trace_tg_destroy,
41		.me		= THIS_MODULE,
42	},
43#if IS_ENABLED(CONFIG_IP6_NF_IPTABLES)
44	{
45		.name		= "TRACE",
46		.revision	= 0,
47		.family		= NFPROTO_IPV6,
48		.table		= "raw",
49		.target		= trace_tg,
50		.checkentry	= trace_tg_check,
51		.destroy	= trace_tg_destroy,
52		.me		= THIS_MODULE,
53	},
54#endif
55};
56
57static int __init trace_tg_init(void)
58{
59	return xt_register_targets(trace_tg_reg, ARRAY_SIZE(trace_tg_reg));
60}
61
62static void __exit trace_tg_exit(void)
63{
64	xt_unregister_targets(trace_tg_reg, ARRAY_SIZE(trace_tg_reg));
65}
66
67module_init(trace_tg_init);
68module_exit(trace_tg_exit);
69MODULE_SOFTDEP("pre: nf_log_syslog");