projects / deliverable / linux.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 JK |
42 | static inline bool |
| 43 | ip_set_timeout_test(unsigned long timeout) | |
| 44 | { | |
| 45 | return timeout == IPSET_ELEM_PERMANENT || | |
| 249ddc79 | 46 | time_is_after_jiffies(timeout); |
| 72205fc6 JK |
47 | } |
| 48 | ||
| 49 | static inline bool | |
| 075e64c0 | 50 | ip_set_timeout_expired(unsigned long *timeout) |
| 72205fc6 | 51 | { |
| 075e64c0 JK |
52 | return *timeout != IPSET_ELEM_PERMANENT && |
| 53 | time_is_before_jiffies(*timeout); | |
| 72205fc6 JK |
54 | } |
| 55 | ||
| 075e64c0 JK |
56 | static inline void |
| 57 | ip_set_timeout_set(unsigned long *timeout, u32 t) | |
| 72205fc6 | 58 | { |
| 075e64c0 JK |
59 | if (!t) { |
| 60 | *timeout = IPSET_ELEM_PERMANENT; | |
| 61 | return; | |
| 62 | } | |
| 72205fc6 | 63 | |
| 075e64c0 JK |
64 | *timeout = msecs_to_jiffies(t * 1000) + jiffies; |
| 65 | if (*timeout == IPSET_ELEM_PERMANENT) | |
| 72205fc6 | 66 | /* Bingo! :-) */ |
| 075e64c0 | 67 | (*timeout)--; |
| 72205fc6 JK |
68 | } |
| 69 | ||
| 70 | static inline u32 | |
| 075e64c0 | 71 | ip_set_timeout_get(unsigned long *timeout) |
| 72205fc6 | 72 | { |
| 075e64c0 JK |
73 | return *timeout == IPSET_ELEM_PERMANENT ? 0 : |
| 74 | jiffies_to_msecs(*timeout - jiffies)/1000; | |
| 72205fc6 | 75 | } |
| 72205fc6 JK |
76 | |
| 77 | #endif /* __KERNEL__ */ | |
| 72205fc6 | 78 | #endif /* _IP_SET_TIMEOUT_H */ |