Jozsef Kadlecsik | ba9dda3 | 2007-07-07 22:21:23 -0700 | [diff] [blame] | 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 | |
Jan Engelhardt | 2ae15b6 | 2008-01-14 23:42:28 -0800 | [diff] [blame] | 8 | MODULE_DESCRIPTION("Xtables: packet flow tracing"); |
Jozsef Kadlecsik | ba9dda3 | 2007-07-07 22:21:23 -0700 | [diff] [blame] | 9 | MODULE_LICENSE("GPL"); |
| 10 | MODULE_ALIAS("ipt_TRACE"); |
| 11 | MODULE_ALIAS("ip6t_TRACE"); |
| 12 | |
| 13 | static unsigned int |
Jan Engelhardt | d3c5ee6 | 2007-12-04 23:24:03 -0800 | [diff] [blame] | 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) |
Jozsef Kadlecsik | ba9dda3 | 2007-07-07 22:21:23 -0700 | [diff] [blame] | 17 | { |
Herbert Xu | 3db05fe | 2007-10-15 00:53:15 -0700 | [diff] [blame] | 18 | skb->nf_trace = 1; |
Jozsef Kadlecsik | ba9dda3 | 2007-07-07 22:21:23 -0700 | [diff] [blame] | 19 | return XT_CONTINUE; |
| 20 | } |
| 21 | |
Jan Engelhardt | 55b69e9 | 2008-10-08 11:35:01 +0200 | [diff] [blame^] | 22 | static struct xt_target trace_tg_reg __read_mostly = { |
| 23 | .name = "TRACE", |
| 24 | .revision = 0, |
| 25 | .family = NFPROTO_UNSPEC, |
| 26 | .table = "raw", |
| 27 | .target = trace_tg, |
| 28 | .me = THIS_MODULE, |
Jozsef Kadlecsik | ba9dda3 | 2007-07-07 22:21:23 -0700 | [diff] [blame] | 29 | }; |
| 30 | |
Jan Engelhardt | d3c5ee6 | 2007-12-04 23:24:03 -0800 | [diff] [blame] | 31 | static int __init trace_tg_init(void) |
Jozsef Kadlecsik | ba9dda3 | 2007-07-07 22:21:23 -0700 | [diff] [blame] | 32 | { |
Jan Engelhardt | 55b69e9 | 2008-10-08 11:35:01 +0200 | [diff] [blame^] | 33 | return xt_register_target(&trace_tg_reg); |
Jozsef Kadlecsik | ba9dda3 | 2007-07-07 22:21:23 -0700 | [diff] [blame] | 34 | } |
| 35 | |
Jan Engelhardt | d3c5ee6 | 2007-12-04 23:24:03 -0800 | [diff] [blame] | 36 | static void __exit trace_tg_exit(void) |
Jozsef Kadlecsik | ba9dda3 | 2007-07-07 22:21:23 -0700 | [diff] [blame] | 37 | { |
Jan Engelhardt | 55b69e9 | 2008-10-08 11:35:01 +0200 | [diff] [blame^] | 38 | xt_unregister_target(&trace_tg_reg); |
Jozsef Kadlecsik | ba9dda3 | 2007-07-07 22:21:23 -0700 | [diff] [blame] | 39 | } |
| 40 | |
Jan Engelhardt | d3c5ee6 | 2007-12-04 23:24:03 -0800 | [diff] [blame] | 41 | module_init(trace_tg_init); |
| 42 | module_exit(trace_tg_exit); |