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Code Issues Releases Wiki Activity

hopefully finally fixed the sequence number issues

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git-svn-id: https://zerberus.eonerc.rwth-aachen.de:8443/svn/s2ss/trunk@247 8ec27952-4edc-4aab-86aa-e87bb2611832
This commit is contained in:
Steffen Vogel 2014-09-11 14:40:58 +00:00
parent 8f83e297e0
commit 4c7386a90d
1 changed files with 25 additions and 23 deletions
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48
server/src/path.c
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@ -64,7 +64,6 @@ static void * path_send(void *arg)
/** Receive messages */
static void * path_run(void *arg)
{
int lag;
struct path *p = (struct path *) arg;
struct msg *m = malloc(sizeof(struct msg));
@ -74,11 +73,31 @@ static void * path_run(void *arg)
/* Main thread loop */
while (1) {
msg_recv(m, p->in); /* Receive message */
p->received++;
/* Check sequence number */
if (m->sequence == 0) {
/* Check header fields */
if (m->version != MSG_VERSION ||
m->type != MSG_TYPE_DATA) {
p->invalid++;
continue;
}
/* Update histogram */
int dist = (UINT16_MAX + m->sequence - p->sequence) % UINT16_MAX;
if (dist > UINT16_MAX / 2)
dist -= UINT16_MAX;
int idx = HIST_SEQ / 2 + dist;
if (idx < HIST_SEQ && idx >= 0)
p->histogram[idx]++;
/* Handle simulation restart */
if (m->sequence == 0 && abs(dist) > 64) {
path_stats(p);
info("Simulation started");
warn("Simulation for path %s " MAG("=>") " %s "
"restarted (p->seq=%u, m->seq=%u, dist=%d)",
p->in->name, p->out->name,
p->sequence, m->sequence, dist);
/* Reset counters */
p->sent = 0;
@ -88,31 +107,14 @@ static void * path_run(void *arg)
p->dropped = 0;
/* Reset sequence no tracking */
p->sequence = -1;
memset(p->histogram, 0, sizeof(p->histogram));
}
lag = m->sequence - p->sequence;
p->received++;
if (HIST_SEQ/2 + lag < HIST_SEQ && HIST_SEQ/2 + lag >= 0)
p->histogram[HIST_SEQ/2 + lag]++;
/* Check header fields */
if (m->version != MSG_VERSION ||
m->type != MSG_TYPE_DATA) {
p->invalid++;
continue;
}
/* Sequence no. is lower than expected */
if (lag <= 0) {
else if (dist <= 0 && p->received > 1) {
p->dropped++;
continue;
}
/* Call hook callbacks */
if (p->hook && p->hook(m, p)) {
p->skipped++;
continue;