/* * $FreeBSD$ * * library functions for userland testing of dummynet schedulers */ #include "dn_test.h" void m_freem(struct mbuf *m) { printf("free %p\n", m); } int dn_sched_modevent(module_t mod, int cmd, void *arg) { (void)mod; (void)cmd; (void)arg; return 0; } void dn_free_pkts(struct mbuf *m) { struct mbuf *x; while ( (x = m) ) { m = m->m_nextpkt; m_freem(x); } } int dn_delete_queue(void *_q, void *do_free) { struct dn_queue *q = _q; (void)do_free; if (q->mq.head) dn_free_pkts(q->mq.head); free(q); return 0; } /* * This is a simplified function for testing purposes, which does * not implement statistics or random loss. * Enqueue a packet in q, subject to space and queue management policy * (whose parameters are in q->fs). * Update stats for the queue and the scheduler. * Return 0 on success, 1 on drop. The packet is consumed anyways. */ int dn_enqueue(struct dn_queue *q, struct mbuf* m, int drop) { if (drop) goto drop; if (q->ni.length >= 200) goto drop; mq_append(&q->mq, m); q->ni.length++; q->ni.tot_bytes += m->m_pkthdr.len; q->ni.tot_pkts++; return 0; drop: q->ni.drops++; return 1; } int ipdn_bound_var(int *v, int dflt, int lo, int hi, const char *msg) { (void)msg; if (*v < lo) { *v = dflt; } else if (*v > hi) { *v = hi; } return *v; } #ifndef __FreeBSD__ int fls(int mask) { int bit; if (mask == 0) return (0); for (bit = 1; mask != 1; bit++) mask = (unsigned int)mask >> 1; return (bit); } #endif |