Fixed bug in sdnfv#228

onvm/go.sh

@@ -48,13 +48,32 @@ fi
 
 shift 3
 
+# Verify that bc is installed
+if [[ $(dpkg-query -W -f='${Status}' bc 2>/dev/null | grep -c "ok installed") == 0 ]]
+then
+    echo "Error: bc is not installed. Install using:"
+    echo "  sudo apt-get install bc"
+    echo "See dependencies for more information"
+    exit 1
+fi
+
 if [ -z "$nf_cores" ]
 then
     usage
 fi
 
+ports_bin=$(echo "obase=2; ibase=16; $ports" | bc)
+count_ports=0
+while [[ $ports_bin -ne 0 ]]
+do
+    if [[ $((ports_bin % 10)) -eq 1 ]]
+    then
+        count_ports=$((count_ports+1))
+    fi
+    ports_bin=$ports_bin/10
+done
 ports_detected=$("$RTE_SDK"/usertools/dpdk-devbind.py --status-dev net | sed '/Network devices using kernel driver/q' | grep -c "drv")
-if [[ $ports_detected -lt $ports ]]
+if [[ $ports_detected -lt $count_ports ]]
 then
     echo "Error: Invalid port mask. Insufficient NICs bound."
     exit 1