/* * 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; }