From c30dbdad409cd53e92bf96fd3ea9a6f32a7cb0d1 Mon Sep 17 00:00:00 2001
From: brian <brian@FreeBSD.org>
Date: Fri, 6 Aug 1999 01:34:03 +0000
Subject: If the clock is put back, ensure that we don't end up dividing by
 zero when calculating our throughput

---
 usr.sbin/ppp/throughput.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

(limited to 'usr.sbin')

diff --git a/usr.sbin/ppp/throughput.c b/usr.sbin/ppp/throughput.c
index dd1b24f..af3b09a 100644
--- a/usr.sbin/ppp/throughput.c
+++ b/usr.sbin/ppp/throughput.c
@@ -23,7 +23,7 @@
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
  *
- *	$Id: throughput.c,v 1.9 1999/05/08 11:07:47 brian Exp $
+ *	$Id: throughput.c,v 1.10 1999/08/05 10:32:15 brian Exp $
  */
 
 #include <sys/types.h>
@@ -75,6 +75,15 @@ throughput_uptime(struct pppThroughput *t)
   time_t downat;
 
   downat = t->downtime ? t->downtime : time(NULL);
+  if (t->uptime && downat < t->uptime) {
+    /* Euch !  The clock's gone back ! */
+    int i; 
+ 
+    for (i = 0; i < t->SamplePeriod; i++)
+      t->SampleOctets[i] = 0;
+    t->nSample = 0;
+    t->uptime = downat;
+  }
   return t->uptime ? downat - t->uptime : 0;
 }
 
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