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Linux/net/netfilter/xt_TRACE.c

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  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 
  8 MODULE_DESCRIPTION("Xtables: packet flow tracing");
  9 MODULE_LICENSE("GPL");
 10 MODULE_ALIAS("ipt_TRACE");
 11 MODULE_ALIAS("ip6t_TRACE");
 12 
 13 static unsigned int
 14 trace_tg(struct sk_buff *skb, const struct xt_target_param *par)
 15 {
 16         skb->nf_trace = 1;
 17         return XT_CONTINUE;
 18 }
 19 
 20 static 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 
 29 static int __init trace_tg_init(void)
 30 {
 31         return xt_register_target(&trace_tg_reg);
 32 }
 33 
 34 static void __exit trace_tg_exit(void)
 35 {
 36         xt_unregister_target(&trace_tg_reg);
 37 }
 38 
 39 module_init(trace_tg_init);
 40 module_exit(trace_tg_exit);
 41 

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