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/*
* BIRD Internet Routing Daemon -- Limits
*
* (c) 1998--2000 Martin Mares <mj@ucw.cz>
* (c) 2021 Maria Matejka <mq@jmq.cz>
*
* Can be freely distributed and used under the terms of the GNU GPL.
*/
#ifndef _BIRD_LIMIT_H_
#define _BIRD_LIMIT_H_
struct limit {
u32 max;
u32 count;
int (*action)(struct limit *, void *data);
};
static inline int limit_do_action(struct limit *l, void *data)
{
return l->action ? l->action(l, data) : 1;
}
static inline int limit_push(struct limit *l, void *data)
{
if ((l->count >= l->max) && limit_do_action(l, data))
return 1;
l->count++;
return 0;
}
static inline void limit_pop(struct limit *l)
{
ASSERT_DIE(l->count > 0);
--l->count;
}
static inline void limit_reset(struct limit *l)
{
l->count = 0;
}
static inline void limit_update(struct limit *l, void *data, u32 max)
{
if (l->count > (l->max = max))
limit_do_action(l, data);
}
#endif
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