From 920d92580664496deed593f538c881f925a4e7d2 Mon Sep 17 00:00:00 2001
From: YAMAMOTO Takashi <yamamoto@midokura.com>
Date: Thu, 17 Jun 2021 13:37:00 +0900
Subject: [PATCH] iperf: Fix an unused function warning seen with clang

---
 netutils/iperf/iperf.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/netutils/iperf/iperf.c b/netutils/iperf/iperf.c
index 6ee511a82..7b48431c1 100644
--- a/netutils/iperf/iperf.c
+++ b/netutils/iperf/iperf.c
@@ -27,6 +27,8 @@
 #include <net/if.h>
 #include <arpa/inet.h>
 #include <netinet/in.h>
+#include <assert.h>
+#include <stdbool.h>
 #include "iperf.h"
 
 /****************************************************************************
@@ -673,10 +675,16 @@ static void iperf_task_traffic(void *arg)
     {
       iperf_run_tcp_client();
     }
-  else
+  else if (iperf_is_tcp_server())
     {
       iperf_run_tcp_server();
     }
+  else
+    {
+      /* shouldn't happen */
+
+      assert(false);
+    }
 
   if (s_iperf_ctrl.buffer)
     {