ca134ce864
Default timeout and extension offsets are moved to struct set, because all set types supports all extensions and it makes possible to generalize extension support. Signed-off-by: Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
79 lines
2 KiB
C
79 lines
2 KiB
C
#ifndef _IP_SET_TIMEOUT_H
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#define _IP_SET_TIMEOUT_H
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/* Copyright (C) 2003-2013 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifdef __KERNEL__
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/* How often should the gc be run by default */
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#define IPSET_GC_TIME (3 * 60)
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/* Timeout period depending on the timeout value of the given set */
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#define IPSET_GC_PERIOD(timeout) \
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((timeout/3) ? min_t(u32, (timeout)/3, IPSET_GC_TIME) : 1)
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/* Entry is set with no timeout value */
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#define IPSET_ELEM_PERMANENT 0
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/* Set is defined with timeout support: timeout value may be 0 */
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#define IPSET_NO_TIMEOUT UINT_MAX
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#define ip_set_adt_opt_timeout(opt, set) \
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((opt)->ext.timeout != IPSET_NO_TIMEOUT ? (opt)->ext.timeout : (set)->timeout)
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static inline unsigned int
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ip_set_timeout_uget(struct nlattr *tb)
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{
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unsigned int timeout = ip_set_get_h32(tb);
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/* Normalize to fit into jiffies */
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if (timeout > UINT_MAX/MSEC_PER_SEC)
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timeout = UINT_MAX/MSEC_PER_SEC;
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/* Userspace supplied TIMEOUT parameter: adjust crazy size */
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return timeout == IPSET_NO_TIMEOUT ? IPSET_NO_TIMEOUT - 1 : timeout;
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}
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static inline bool
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ip_set_timeout_test(unsigned long timeout)
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{
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return timeout == IPSET_ELEM_PERMANENT ||
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time_is_after_jiffies(timeout);
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}
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static inline bool
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ip_set_timeout_expired(unsigned long *timeout)
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{
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return *timeout != IPSET_ELEM_PERMANENT &&
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time_is_before_jiffies(*timeout);
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}
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static inline void
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ip_set_timeout_set(unsigned long *timeout, u32 t)
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{
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if (!t) {
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*timeout = IPSET_ELEM_PERMANENT;
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return;
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}
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*timeout = msecs_to_jiffies(t * 1000) + jiffies;
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if (*timeout == IPSET_ELEM_PERMANENT)
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/* Bingo! :-) */
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(*timeout)--;
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}
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static inline u32
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ip_set_timeout_get(unsigned long *timeout)
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{
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return *timeout == IPSET_ELEM_PERMANENT ? 0 :
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jiffies_to_msecs(*timeout - jiffies)/1000;
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}
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#endif /* __KERNEL__ */
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#endif /* _IP_SET_TIMEOUT_H */
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