51 lines
1.1 KiB
C
51 lines
1.1 KiB
C
/* This is a module which is used to mark packets for tracing.
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*/
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#include <linux/module.h>
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#include <linux/skbuff.h>
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#include <linux/netfilter/x_tables.h>
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MODULE_DESCRIPTION("Xtables: packet flow tracing");
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MODULE_LICENSE("GPL");
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MODULE_ALIAS("ipt_TRACE");
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MODULE_ALIAS("ip6t_TRACE");
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static unsigned int
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trace_tg(struct sk_buff *skb, const struct net_device *in,
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const struct net_device *out, unsigned int hooknum,
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const struct xt_target *target, const void *targinfo)
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{
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skb->nf_trace = 1;
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return XT_CONTINUE;
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}
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static struct xt_target trace_tg_reg[] __read_mostly = {
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{
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.name = "TRACE",
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.family = AF_INET,
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.target = trace_tg,
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.table = "raw",
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.me = THIS_MODULE,
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},
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{
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.name = "TRACE",
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.family = AF_INET6,
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.target = trace_tg,
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.table = "raw",
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.me = THIS_MODULE,
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},
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};
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static int __init trace_tg_init(void)
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{
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return xt_register_targets(trace_tg_reg, ARRAY_SIZE(trace_tg_reg));
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}
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static void __exit trace_tg_exit(void)
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{
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xt_unregister_targets(trace_tg_reg, ARRAY_SIZE(trace_tg_reg));
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}
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module_init(trace_tg_init);
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module_exit(trace_tg_exit);
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