From 9e1dd179fca252dae382b0c7e20779adefef7af6 Mon Sep 17 00:00:00 2001
From: Kirill Andreev <andreev@telum.ru>
Date: Thu, 2 Jun 2011 19:45:03 +0400
Subject: [PATCH] Mesh: Bug 1033 - airtime-metric: fixed

---
 src/mesh/model/dot11s/airtime-metric.cc | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/mesh/model/dot11s/airtime-metric.cc b/src/mesh/model/dot11s/airtime-metric.cc
index 86e81833d..747622223 100644
--- a/src/mesh/model/dot11s/airtime-metric.cc
+++ b/src/mesh/model/dot11s/airtime-metric.cc
@@ -89,6 +89,11 @@ AirtimeLinkMetricCalculator::CalculateMetric (Mac48Address peerAddress, Ptr<Mesh
   WifiMode mode = mac->GetWifiRemoteStationManager ()->GetDataMode (peerAddress, &m_testHeader, m_testFrame, m_testFrame->GetSize ());
   //obtain frame error rate:
   double failAvg = mac->GetWifiRemoteStationManager ()->GetInfo (peerAddress).GetFrameErrorRate ();
+  if (failAvg == 1)
+    {
+      // Retrun max metric value when frame error rate equals to 1
+      return (uint32_t)0xffffffff;
+    }
   NS_ASSERT (failAvg < 1.0);
   //calculate metric
   uint32_t metric = (uint32_t)((double)( /*Overhead + payload*/