1 #ifndef _IP_SET_TIMEOUT_H
2 #define _IP_SET_TIMEOUT_H
4 /* Copyright (C) 2003-2013 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 as
8 * published by the Free Software Foundation.
13 /* How often should the gc be run by default */
14 #define IPSET_GC_TIME (3 * 60)
16 /* Timeout period depending on the timeout value of the given set */
17 #define IPSET_GC_PERIOD(timeout) \
18 ((timeout/3) ? min_t(u32, (timeout)/3, IPSET_GC_TIME) : 1)
20 /* Entry is set with no timeout value */
21 #define IPSET_ELEM_PERMANENT 0
23 /* Set is defined with timeout support: timeout value may be 0 */
24 #define IPSET_NO_TIMEOUT UINT_MAX
26 /* Max timeout value, see msecs_to_jiffies() in jiffies.h */
27 #define IPSET_MAX_TIMEOUT (UINT_MAX >> 1)/MSEC_PER_SEC
29 #define ip_set_adt_opt_timeout(opt, set) \
30 ((opt)->ext.timeout != IPSET_NO_TIMEOUT ? (opt)->ext.timeout : (set)->timeout)
32 static inline unsigned int
33 ip_set_timeout_uget(struct nlattr *tb)
35 unsigned int timeout = ip_set_get_h32(tb);
37 /* Normalize to fit into jiffies */
38 if (timeout > IPSET_MAX_TIMEOUT)
39 timeout = IPSET_MAX_TIMEOUT;
45 ip_set_timeout_expired(const unsigned long *t)
47 return *t != IPSET_ELEM_PERMANENT && time_is_before_jiffies(*t);
51 ip_set_timeout_set(unsigned long *timeout, u32 value)
56 *timeout = IPSET_ELEM_PERMANENT;
60 t = msecs_to_jiffies(value * MSEC_PER_SEC) + jiffies;
61 if (t == IPSET_ELEM_PERMANENT)
68 ip_set_timeout_get(const unsigned long *timeout)
72 if (*timeout == IPSET_ELEM_PERMANENT)
75 t = jiffies_to_msecs(*timeout - jiffies)/MSEC_PER_SEC;
76 /* Zero value in userspace means no timeout */
77 return t == 0 ? 1 : t;
80 #endif /* __KERNEL__ */
81 #endif /* _IP_SET_TIMEOUT_H */