test_dn_sched.c

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    1 /*
    2  * $FreeBSD$
    3  *
    4  * library functions for userland testing of dummynet schedulers
    5  */
    6 
    7 #include "dn_test.h"
    8 
    9 void
   10 m_freem(struct mbuf *m)
   11 {
   12         printf("free %p\n", m);
   13 }
   14 
   15 int
   16 dn_sched_modevent(module_t mod, int cmd, void *arg)
   17 {
   18         (void)mod;
   19         (void)cmd;
   20         (void)arg;
   21         return 0;
   22 }
   23 
   24 void
   25 dn_free_pkts(struct mbuf *m)
   26 {
   27         struct mbuf *x;
   28         while ( (x = m) ) {
   29                 m = m->m_nextpkt;
   30                 m_freem(x);
   31         }
   32 }
   33                 
   34 int
   35 dn_delete_queue(void *_q, void *do_free)
   36 {
   37         struct dn_queue *q = _q;
   38 
   39         (void)do_free;
   40         if (q->mq.head)
   41                 dn_free_pkts(q->mq.head);
   42         free(q);
   43         return 0;
   44 }
   45 
   46 /*
   47  * This is a simplified function for testing purposes, which does
   48  * not implement statistics or random loss.
   49  * Enqueue a packet in q, subject to space and queue management policy
   50  * (whose parameters are in q->fs).
   51  * Update stats for the queue and the scheduler.
   52  * Return 0 on success, 1 on drop. The packet is consumed anyways.
   53  */
   54 int
   55 dn_enqueue(struct dn_queue *q, struct mbuf* m, int drop)
   56 {
   57         if (drop)
   58                 goto drop;
   59         if (q->ni.length >= 200)
   60                 goto drop;
   61         mq_append(&q->mq, m);
   62         q->ni.length++;
   63         q->ni.tot_bytes += m->m_pkthdr.len;
   64         q->ni.tot_pkts++;
   65         return 0;
   66 
   67 drop:
   68         q->ni.drops++;
   69         return 1;
   70 }
   71 
   72 int
   73 ipdn_bound_var(int *v, int dflt, int lo, int hi, const char *msg)
   74 {
   75         (void)msg;
   76         if (*v < lo) {
   77                 *v = dflt;
   78         } else if (*v > hi) {
   79                 *v = hi;
   80         }
   81         return *v;
   82 }
   83 
   84 #ifndef __FreeBSD__
   85 int
   86 fls(int mask)
   87 {
   88         int bit;
   89 
   90         if (mask == 0)
   91                 return (0);
   92         for (bit = 1; mask != 1; bit++)
   93                 mask = (unsigned int)mask >> 1;
   94         return (bit);
   95 }
   96 #endif

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FreeBSD/Linux Kernel Cross Reference sys/netpfil/ipfw/test/test_dn_sched.c

FreeBSD/Linux Kernel Cross Reference
sys/netpfil/ipfw/test/test_dn_sched.c