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#ifndef _IP_SET_TIMEOUT_H
#define _IP_SET_TIMEOUT_H
/* Copyright (C) 2003-2013 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 by default */
#define IPSET_GC_TIME (3 * 60)
/* Timeout period depending on the timeout value of the given set */
#define IPSET_GC_PERIOD(timeout) \
((timeout/3) ? min_t(u32, (timeout)/3, IPSET_GC_TIME) : 1)
/* Entry is set with no timeout value */
#define IPSET_ELEM_PERMANENT 0
/* Set is defined with timeout support: timeout value may be 0 */
#define IPSET_NO_TIMEOUT UINT_MAX
#define ip_set_adt_opt_timeout(opt, set) \
((opt)->ext.timeout != IPSET_NO_TIMEOUT ? (opt)->ext.timeout : (set)->timeout)
static inline unsigned int
ip_set_timeout_uget(struct nlattr *tb)
{
unsigned int timeout = ip_set_get_h32(tb);
/* Normalize to fit into jiffies */
if (timeout > UINT_MAX/MSEC_PER_SEC)
timeout = UINT_MAX/MSEC_PER_SEC;
/* Userspace supplied TIMEOUT parameter: adjust crazy size */
return timeout == IPSET_NO_TIMEOUT ? IPSET_NO_TIMEOUT - 1 : timeout;
}
static inline bool
ip_set_timeout_test(unsigned long timeout)
{
return timeout == IPSET_ELEM_PERMANENT ||
time_is_after_jiffies(timeout);
}
static inline bool
ip_set_timeout_expired(unsigned long *timeout)
{
return *timeout != IPSET_ELEM_PERMANENT &&
time_is_before_jiffies(*timeout);
}
static inline void
ip_set_timeout_set(unsigned long *timeout, u32 t)
{
if (!t) {
*timeout = IPSET_ELEM_PERMANENT;
return;
}
*timeout = msecs_to_jiffies(t * 1000) + jiffies;
if (*timeout == IPSET_ELEM_PERMANENT)
/* Bingo! :-) */
(*timeout)--;
}
static inline u32
ip_set_timeout_get(unsigned long *timeout)
{
return *timeout == IPSET_ELEM_PERMANENT ? 0 :
jiffies_to_msecs(*timeout - jiffies)/1000;
}
#endif /* __KERNEL__ */
#endif /* _IP_SET_TIMEOUT_H */
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