From 08d74a962e302b752f53a9c367053a39068104ed Mon Sep 17 00:00:00 2001
From: Joe Stringer <joestringer@nicira.com>
Date: Tue, 28 Jan 2014 13:04:35 -0800
Subject: [PATCH] upcall: Avoid divide-by-zero calculating flow limit

Signed-off-by: Joe Stringer <joestringer@nicira.com>
Acked-by: Ethan Jackson <ethan@nicira.com>
---
 ofproto/ofproto-dpif-upcall.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ofproto/ofproto-dpif-upcall.c b/ofproto/ofproto-dpif-upcall.c
index 24919db3c..ff979ba16 100644
--- a/ofproto/ofproto-dpif-upcall.c
+++ b/ofproto/ofproto-dpif-upcall.c
@@ -615,7 +615,7 @@ udpif_flow_dumper(void *arg)
             ovs_mutex_unlock(&revalidator->mutex);
         }
 
-        duration = time_msec() - start_time;
+        duration = MAX(time_msec() - start_time, 1);
         udpif->dump_duration = duration;
         if (duration > 2000) {
             flow_limit /= duration / 1000;
-- 
2.47.0