xt_TARPIT: honeypot and reset modes

Honeypot mode attempts to maintain a normal connection for the purpose
of capturing payload packets.

Reset mode provides the ability to send a reset packet in lieu of
using the DROP or REJECT targets.

extensions/xt_TARPIT.h

@@ -0,0 +1,14 @@
+#ifndef _LINUX_NETFILTER_XT_TARPIT_H
+#define _LINUX_NETFILTER_XT_TARPIT_H 1
+
+enum xt_tarpit_target_variant {
+	XTTARPIT_TARPIT,
+	XTTARPIT_HONEYPOT,
+	XTTARPIT_RESET,
+};
+
+struct xt_tarpit_tginfo {
+	uint8_t variant;
+};
+
+#endif /* _LINUX_NETFILTER_XT_TARPIT_H */