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 #define ip_set_adt_opt_timeout(opt, set) \
27 ((opt)->ext.timeout != IPSET_NO_TIMEOUT ? (opt)->ext.timeout : (set)->timeout)
29 static inline unsigned int
30 ip_set_timeout_uget(struct nlattr *tb)
32 unsigned int timeout = ip_set_get_h32(tb);
34 /* Normalize to fit into jiffies */
35 if (timeout > UINT_MAX/MSEC_PER_SEC)
36 timeout = UINT_MAX/MSEC_PER_SEC;
38 /* Userspace supplied TIMEOUT parameter: adjust crazy size */
39 return timeout == IPSET_NO_TIMEOUT ? IPSET_NO_TIMEOUT - 1 : timeout;
43 ip_set_timeout_expired(unsigned long *t)
45 return *t != IPSET_ELEM_PERMANENT && time_is_before_jiffies(*t);
49 ip_set_timeout_set(unsigned long *timeout, u32 value)
54 *timeout = IPSET_ELEM_PERMANENT;
58 t = msecs_to_jiffies(value * MSEC_PER_SEC) + jiffies;
59 if (t == IPSET_ELEM_PERMANENT)
66 ip_set_timeout_get(unsigned long *timeout)
68 return *timeout == IPSET_ELEM_PERMANENT ? 0 :
69 jiffies_to_msecs(*timeout - jiffies)/MSEC_PER_SEC;
72 #endif /* __KERNEL__ */
73 #endif /* _IP_SET_TIMEOUT_H */