Compute a smaller jitter when sending urgent updates.

babel.c

@@ -785,9 +785,10 @@ jitter(struct network *net)
 }
 
 unsigned int
-update_jitter(struct network *net)
+update_jitter(struct network *net, int urgent)
 {
     unsigned interval = net->hello_interval * 1000;
+    if(urgent)
+        interval = MIN(interval, 1000);
     return (interval / 2 + random() % interval);
 }
-

babel.h

@@ -102,5 +102,5 @@ extern int max_request_hopcount;
 int network_idle(struct network *net);
 int update_hello_interval(struct network *net);
 unsigned int jitter(struct network *net);
-unsigned int update_jitter(struct network *net);
+unsigned int update_jitter(struct network *net, int urgent);
 

message.c

@@ -520,10 +520,10 @@ flushupdates(void)
 }
 
 static void
-schedule_update_flush(struct network *net)
+schedule_update_flush(struct network *net, int urgent)
 {
     int msecs;
-    msecs = update_jitter(net);
+    msecs = update_jitter(net, urgent);
     if(update_flush_time.tv_sec != 0 &&
        timeval_minus_msec(&update_flush_time, &now) < msecs)
         return;
@@ -598,7 +598,7 @@ send_update(struct network *net, int urgent,
                 buffer_update(net, routes[i].src->prefix, routes[i].src->plen);
         net->update_time = now.tv_sec;
     }
-    schedule_update_flush(net);
+    schedule_update_flush(net, urgent);
 }
 
 void