1 files changed, 103 insertions, 0 deletions
diff --git a/kernel/include/linux/netfilter/ip_set_timeout.h b/kernel/include/linux/netfilter/ip_set_timeout.h
new file mode 100644
index 0000000..da18875
--- /dev/null
+++ b/kernel/include/linux/netfilter/ip_set_timeout.h
@@ -0,0 +1,103 @@
+#ifndef _IP_SET_TIMEOUT_H
+#define _IP_SET_TIMEOUT_H
+
+/* Copyright (C) 2003-2010 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.  
+ */
+
+#ifdef __KERNEL__
+
+/* How often should the gc be run at a minimum */
+#define IPSET_GC_TIME			(3 * 60)
+
+/* Timeout period depending on the timeout value of the given set */
+#define IPSET_GC_PERIOD(timeout) \
+	max_t(uint32_t, (timeout)/10, IPSET_GC_TIME)
+
+/* How much msec to sleep before retrying to destroy gc timer */
+#define IPSET_DESTROY_TIMER_SLEEP	10
+
+/* Timing out etries: unset and permanent */
+#define IPSET_ELEM_UNSET	0
+#define IPSET_ELEM_PERMANENT	UINT_MAX/2
+
+#ifdef IP_SET_BITMAP_TIMEOUT
+static inline bool
+ip_set_timeout_test(unsigned long timeout)
+{
+	return timeout != IPSET_ELEM_UNSET
+	       && (timeout == IPSET_ELEM_PERMANENT
+	           || time_after(timeout, jiffies));
+}
+
+static inline bool
+ip_set_timeout_expired(unsigned long timeout)
+{
+	return timeout != IPSET_ELEM_UNSET
+	       && timeout != IPSET_ELEM_PERMANENT
+	       && time_before(timeout, jiffies);
+}
+
+static inline unsigned long
+ip_set_timeout_set(uint32_t timeout)
+{
+	unsigned long t;
+	
+	if (!timeout)
+		return IPSET_ELEM_PERMANENT;
+	
+	t = timeout * HZ + jiffies;
+	if (t == IPSET_ELEM_UNSET || t == IPSET_ELEM_PERMANENT)
+		t++;
+	
+	return t;
+}
+
+static inline uint32_t
+ip_set_timeout_get(unsigned long timeout)
+{
+	return timeout == IPSET_ELEM_PERMANENT ? 0 : (timeout - jiffies)/HZ;
+}
+
+#else
+
+static inline bool
+ip_set_timeout_test(unsigned long timeout)
+{
+	return timeout == IPSET_ELEM_UNSET || time_after(timeout, jiffies);
+}
+
+static inline bool
+ip_set_timeout_expired(unsigned long timeout)
+{
+	return timeout != IPSET_ELEM_UNSET && time_before(timeout, jiffies);
+}
+
+static inline unsigned long
+ip_set_timeout_set(uint32_t timeout)
+{
+	unsigned long t;
+	
+	if (!timeout)
+		return IPSET_ELEM_UNSET;
+	
+	t = timeout * HZ + jiffies;
+	if (t == IPSET_ELEM_UNSET)
+		t++;
+	
+	return t;
+}
+
+static inline uint32_t
+ip_set_timeout_get(unsigned long timeout)
+{
+	return timeout == IPSET_ELEM_UNSET ? 0 : (timeout - jiffies)/HZ;
+}
+#endif /* IP_SET_BITMAP_TIMEOUT */
+
+#endif	/* __KERNEL__ */
+
+#endif /*_IP_SET_TIMEOUT_H */