void qfRwinSegment(qfRwin_t *qr,
uint32_t unscaled)
{
if ((qr->val.last > 0) && (unscaled == 0)) {
qr->stall++;
}
sstMeanAdd(&qr->val, unscaled << qr->scale);
}
int qfSeqSegment(qfSeq_t *qs, qfRtt_t *rtt, uint16_t mss,
uint8_t flags, uint32_t seq, uint32_t oct,
uint32_t ms, uint32_t tsval,
gboolean do_ts, gboolean do_iat) {
uint32_t lastms = 0;
/* Empty segments don't count */
if (!oct) return 0;
if (qfWrapCompare(seq, qs->nsn) < 0) {
/* Sequence less than NSN: fill */
if (seq - qs->nsn > qs->maxooo) {
qs->maxooo = seq - qs->nsn;
}
if (qfSeqGapFill(qs, seq, seq + oct)) {
qfCountLoss(qs, rtt, ms);
}
} else {
/* Sequence beyond NSN: push */
if (seq != qs->nsn) {
qfSeqGapPush(qs, qs->nsn, seq, mss);
/* signal loss for burst tracking */
qfCountLoss(qs, rtt, ms);
/* track max out of order */
if (seq - qs->nsn > qs->maxooo) {
qs->maxooo = seq - qs->nsn;
}
}
/* Detect wrap */
if (seq + oct < qs->nsn) {
qs->wrapct++;
}
/* Determine next sequence number */
qs->nsn = seq + oct;
/* track timestamp frequency */
if (do_ts && tsval) {
/* increment wrap counters if necessary */
if (tsval < qs->advtsval) {
qs->tsvalwrap++;
}
if (ms < qs->advlms) {
qs->lmswrap++;
}
/* save current value */
qs->advtsval = tsval;
}
/* and advance time */
lastms = qs->advlms;
qs->advlms = ms;
/* calculate interarrival/interdeparture time of advancing segments */
if (do_iat) {
uint32_t iat = 0, idt = 0, hz = 0;
iat = ms - lastms;
sstMeanAdd(&qs->seg_iat, iat);
if (do_ts && tsval && (hz = qfTimestampHz(qs))) {
idt = (1000 * (tsval - qs->advtsval)) / hz;
sstMeanAdd(&qs->seg_variat, iat - idt);
}
}
return 1;
}
/* if we're here, we didn't advance */
return 0;
}
