iperf: compatible work with no IPv4

We possible want to use iperf to test rpmsg socket etc.

Signed-off-by: buxiasen <[email protected]>

Author: jasonbu

netutils/iperf/iperf.c

@@ -220,13 +220,15 @@ static void iperf_print_addr(FAR const char *str, FAR struct sockaddr *addr)
 {
   switch (addr->sa_family)
     {
+#ifdef CONFIG_NET_IPv4
       case AF_INET:
         {
           FAR struct sockaddr_in *inaddr = (FAR struct sockaddr_in *)addr;
           printf("%s: %s:%d\n", str,
                  inet_ntoa(inaddr->sin_addr), htons(inaddr->sin_port));
           return;
         }
+#endif
 
       case AF_LOCAL:
         {

netutils/iperf/iperf_main.c

@@ -140,7 +140,10 @@ int main(int argc, FAR char *argv[])
   struct iperf_cfg_t cfg;
   struct in_addr addr;
   int nerrors;
+
+#ifdef CONFIG_NET_IPv4
   char inetaddr[INET_ADDRSTRLEN];
+#endif
 
   bzero(&addr, sizeof(struct in_addr));
   bzero(&cfg, sizeof(cfg));
@@ -226,6 +229,7 @@ int main(int argc, FAR char *argv[])
     }
   else
     {
+#ifdef CONFIG_NET_IPv4
       if (iperf_args.bind->count > 0)
         {
           addr.s_addr = inet_addr(iperf_args.bind->sval[0]);
@@ -248,6 +252,10 @@ int main(int argc, FAR char *argv[])
       printf("     IP: %s\n", inet_ntoa_r(addr, inetaddr, sizeof(inetaddr)));
 
       cfg.sip = addr.s_addr;
+#else
+      printf("ERROR: IPv4 Not Enabled\n");
+      goto out;
+#endif
     }
 
   if (iperf_args.udp->count == 0)