Add templates and config for vLB in OpenStack

[demo.git] / vnfs / vLB / scripts / v_lb_init.sh

diff --git a/vnfs/vLB/scripts/v_lb_init.sh b/vnfs/vLB/scripts/v_lb_init.sh
index d130c1e..e41c4ef 100755 (executable)
--- a/vnfs/vLB/scripts/v_lb_init.sh
+++ b/vnfs/vLB/scripts/v_lb_init.sh
@@ -4,6 +4,30 @@
 start vpp
 sleep 1
 
+# Compute the network CIDR from the Netmask
+mask2cidr() {
+    nbits=0
+    IFS=.
+    for dec in $1 ; do
+        case $dec in
+            255) let nbits+=8;;
+            254) let nbits+=7;;
+            252) let nbits+=6;;
+            248) let nbits+=5;;
+            240) let nbits+=4;;
+            224) let nbits+=3;;
+            192) let nbits+=2;;
+            128) let nbits+=1;;
+            0);;
+            *) echo "Error: $dec is not recognized"; exit 1
+        esac
+    done
+    echo "$nbits"
+}
+
+IPADDR1_MASK=$(ifconfig eth0 | grep "Mask" | awk '{print $4}' | awk -F ":" '{print $2}')
+IPADDR1_CIDR=$(mask2cidr $IPADDR1_MASK)
+
 # Configure VPP for vPacketGenerator
 IPADDR1=$(ifconfig eth0 | grep "inet addr" | tr -s ' ' | cut -d' ' -f3 | cut -d':' -f2)
 IPADDR2=$(ifconfig eth1 | grep "inet addr" | tr -s ' ' | cut -d' ' -f3 | cut -d':' -f2)
@@ -11,14 +35,14 @@ HWADDR1=$(ifconfig eth0 | grep HWaddr | tr -s ' ' | cut -d' ' -f5)
 HWADDR2=$(ifconfig eth1 | grep HWaddr | tr -s ' ' | cut -d' ' -f5)
 FAKE_HWADDR1=$(echo -n 00; dd bs=1 count=5 if=/dev/urandom 2>/dev/null |hexdump -v -e '/1 ":%02X"')
 FAKE_HWADDR2=$(echo -n 00; dd bs=1 count=5 if=/dev/urandom 2>/dev/null |hexdump -v -e '/1 ":%02X"')
-GW=$(route | grep default | awk '{print $2}')
+GW=$(route -n | grep "^0.0.0.0" | awk '{print $2}')
 
 ifconfig eth0 down
 ifconfig eth0 hw ether $FAKE_HWADDR1
 ip addr flush dev eth0
 ifconfig eth0 up
 vppctl tap connect tappub hwaddr $HWADDR1
-vppctl set int ip address tap-0 $IPADDR1"/24"
+vppctl set int ip address tap-0 $IPADDR1"/"$IPADDR1_CIDR
 vppctl set int state tap-0 up
 brctl addbr br0
 brctl addif br0 tappub