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Allow continuous packet transmission (via -t 0)

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Also add a missing check for the cancel flag while waiting for the first
packet in receive mode.
This commit is contained in:
Ed Maste 2012-07-06 17:03:43 +00:00
parent dcb0dada6b
commit f95a30bd6a
1 changed files with 13 additions and 6 deletions
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19
tools/tools/netmap/pkt-gen.c
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@ -472,9 +472,14 @@ sender_body(void *data)
struct pollfd fds[1];
struct netmap_if *nifp = targ->nifp;
struct netmap_ring *txring;
int i, n = targ->g->npackets / targ->g->nthreads, sent = 0;
int i, pkts_per_td = targ->g->npackets / targ->g->nthreads, sent = 0;
int continuous = 0;
int options = targ->g->options | OPT_COPY;
D("start");
if (pkts_per_td == 0) {
continuous = 1;
pkts_per_td = 100000;
}
if (setaffinity(targ->thread, targ->affinity))
goto quit;
/* setup poll(2) mechanism. */
@ -489,7 +494,7 @@ D("start");
void *pkt = &targ->pkt;
pcap_t *p = targ->g->p;
for (i = 0; sent < n && !targ->cancel; i++) {
for (i = 0; (sent < pkts_per_td && !targ->cancel) || continuous; i++) {
if (pcap_inject(p, pkt, size) != -1)
sent++;
if (i > 10000) {
@ -498,7 +503,7 @@ D("start");
}
}
} else {
while (sent < n) {
while (sent < pkts_per_td || continuous) {
/*
* wait for available room in the send queue(s)
@ -515,7 +520,9 @@ D("start");
if (sent > 100000 && !(targ->g->options & OPT_COPY) )
options &= ~OPT_COPY;
for (i = targ->qfirst; i < targ->qlast && !targ->cancel; i++) {
int m, limit = MIN(n - sent, targ->g->burst);
int m, limit = targ->g->burst;
if (!continuous && pkts_per_td - sent < limit)
limit = pkts_per_td - sent;
txring = NETMAP_TXRING(nifp, i);
if (txring->avail == 0)
@ -602,7 +609,7 @@ receiver_body(void *data)
fds[0].events = (POLLIN);
/* unbounded wait for the first packet. */
for (;;) {
while (!targ->cancel) {
i = poll(fds, 1, 1000);
if (i > 0 && !(fds[0].revents & POLLERR))
break;
@ -716,7 +723,7 @@ usage(void)
"Usage:\n"
"%s arguments\n"
"\t-i interface interface name\n"
"\t-t pkts_to_send also forces send mode\n"
"\t-t pkts_to_send also forces send mode, 0 = continuous\n"
"\t-r pkts_to_receive also forces receive mode\n"
"\t-l pkts_size in bytes excluding CRC\n"
"\t-d dst-ip end with %%n to sweep n addresses\n"