projects / mirror_ubuntu-hirsute-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 72205fc6 JK |
1 | #ifndef _IP_SET_TIMEOUT_H |
| 2 | #define _IP_SET_TIMEOUT_H | |
| 3 | ||
| 075e64c0 | 4 | /* Copyright (C) 2003-2013 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu> |
| 72205fc6 JK |
5 | * |
| 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. | |
| 9 | */ | |
| 10 | ||
| 11 | #ifdef __KERNEL__ | |
| 12 | ||
| 13 | /* How often should the gc be run by default */ | |
| 14 | #define IPSET_GC_TIME (3 * 60) | |
| 15 | ||
| 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) | |
| 19 | ||
| 075e64c0 JK |
20 | /* Entry is set with no timeout value */ |
| 21 | #define IPSET_ELEM_PERMANENT 0 | |
| 72205fc6 | 22 | |
| 075e64c0 JK |
23 | /* Set is defined with timeout support: timeout value may be 0 */ |
| 24 | #define IPSET_NO_TIMEOUT UINT_MAX | |
| 72205fc6 | 25 | |
| ca134ce8 JK |
26 | #define ip_set_adt_opt_timeout(opt, set) \ |
| 27 | ((opt)->ext.timeout != IPSET_NO_TIMEOUT ? (opt)->ext.timeout : (set)->timeout) | |
| ac8cc925 | 28 | |
| 72205fc6 JK |
29 | static inline unsigned int |
| 30 | ip_set_timeout_uget(struct nlattr *tb) | |
| 31 | { | |
| 32 | unsigned int timeout = ip_set_get_h32(tb); | |
| 33 | ||
| 127f5591 JK |
34 | /* Normalize to fit into jiffies */ |
| 35 | if (timeout > UINT_MAX/MSEC_PER_SEC) | |
| 36 | timeout = UINT_MAX/MSEC_PER_SEC; | |
| 37 | ||
| 72205fc6 JK |
38 | /* Userspace supplied TIMEOUT parameter: adjust crazy size */ |
| 39 | return timeout == IPSET_NO_TIMEOUT ? IPSET_NO_TIMEOUT - 1 : timeout; | |
| 40 | } | |
| 41 | ||
| 72205fc6 | 42 | static inline bool |
| da9fbfa7 | 43 | ip_set_timeout_expired(const unsigned long *t) |
| 72205fc6 | 44 | { |
| b57b2d1f | 45 | return *t != IPSET_ELEM_PERMANENT && time_is_before_jiffies(*t); |
| 72205fc6 JK |
46 | } |
| 47 | ||
| 075e64c0 | 48 | static inline void |
| b57b2d1f | 49 | ip_set_timeout_set(unsigned long *timeout, u32 value) |
| 72205fc6 | 50 | { |
| b57b2d1f JK |
51 | unsigned long t; |
| 52 | ||
| 53 | if (!value) { | |
| 075e64c0 JK |
54 | *timeout = IPSET_ELEM_PERMANENT; |
| 55 | return; | |
| 56 | } | |
| 72205fc6 | 57 | |
| b57b2d1f JK |
58 | t = msecs_to_jiffies(value * MSEC_PER_SEC) + jiffies; |
| 59 | if (t == IPSET_ELEM_PERMANENT) | |
| 72205fc6 | 60 | /* Bingo! :-) */ |
| b57b2d1f JK |
61 | t--; |
| 62 | *timeout = t; | |
| 72205fc6 JK |
63 | } |
| 64 | ||
| 65 | static inline u32 | |
| da9fbfa7 | 66 | ip_set_timeout_get(const unsigned long *timeout) |
| 72205fc6 | 67 | { |
| 075e64c0 | 68 | return *timeout == IPSET_ELEM_PERMANENT ? 0 : |
| aaeb6e24 | 69 | jiffies_to_msecs(*timeout - jiffies)/MSEC_PER_SEC; |
| 72205fc6 | 70 | } |
| 72205fc6 JK |
71 | |
| 72 | #endif /* __KERNEL__ */ | |
| 72205fc6 | 73 | #endif /* _IP_SET_TIMEOUT_H */ |