mirror of
https://gitlab.nic.cz/labs/bird.git
synced 2024-12-24 18:51:54 +00:00
30 lines
520 B
C
30 lines
520 B
C
|
/*
|
||
|
|
* BIRD Library -- Token Bucket Filter
|
||
|
|
*
|
||
|
|
* (c) 2014 Ondrej Zajicek <santiago@crfreenet.org>
|
||
|
|
* (c) 2014 CZ.NIC z.s.p.o.
|
||
|
|
*
|
||
|
|
* Can be freely distributed and used under the terms of the GNU GPL.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "nest/bird.h"
|
||
|
|
|
||
|
|
void
|
||
|
|
tbf_update(struct tbf *f)
|
||
|
|
{
|
||
|
|
bird_clock_t delta = now - f->timestamp;
|
||
|
|
|
||
|
|
if (delta == 0)
|
||
|
|
return;
|
||
|
|
|
||
|
|
f->timestamp = now;
|
||
|
|
|
||
|
|
if ((0 < delta) && (delta < f->burst))
|
||
|
|
{
|
||
|
|
u32 next = f->count + delta * f->rate;
|
||
|
|
f->count = MIN(next, f->burst);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
f->count = f->burst;
|
||
|
|
}
|