added 3 bmv2 examples: copy_to_cpu, meter, TLV_parsing

examples/veth_setup.sh

@@ -0,0 +1,26 @@
+#!/bin/bash
+noOfVeths=18
+if [ $# -eq 1 ]; then 
+    noOfVeths=$1
+fi
+echo "No of Veths is $noOfVeths"
+idx=0
+let "vethpairs=$noOfVeths/2"
+while [ $idx -lt $vethpairs ]
+do 
+    intf0="veth$(($idx*2))"
+    intf1="veth$(($idx*2+1))"
+    idx=$((idx + 1))
+    if ! ip link show $intf0 &> /dev/null; then
+        ip link add name $intf0 type veth peer name $intf1
+        ip link set dev $intf0 up
+        ip link set dev $intf1 up
+        TOE_OPTIONS="rx tx sg tso ufo gso gro lro rxvlan txvlan rxhash"
+        for TOE_OPTION in $TOE_OPTIONS; do
+           /sbin/ethtool --offload $intf0 "$TOE_OPTION" off
+           /sbin/ethtool --offload $intf1 "$TOE_OPTION" off
+        done
+    fi
+    sysctl net.ipv6.conf.$intf0.disable_ipv6=1
+    sysctl net.ipv6.conf.$intf1.disable_ipv6=1
+done