@@ -92,7 +92,6 @@ $ipv6 && ip -net ns3 addr add dead:beef:3::2/64 dev ns3eth4
ip -net ns3 link set ns3eth4 up
ip -net ns3 route add default via 10.0.2.1
$ipv6 && ip -net ns3 route add default via dead:beef:2::1
-ip netns exec ns3 ethtool -K ns3eth2 tso off 2>/dev/null
ip netns exec ns3 sysctl -q net.ipv4.ip_forward=1
$ipv6 && ip netns exec ns3 sysctl -q net.ipv6.conf.all.forwarding=1
@@ -102,6 +101,34 @@ ip -net ns4 link set ns4eth3 up
ip -net ns4 route add default via 10.0.3.2
$ipv6 && ip -net ns4 route add default via dead:beef:3::2
+set_ethtool_flags() {
+ ns=$1
+ dev=$2
+
+ r=$RANDOM
+
+ pick1=$((r & 1))
+ r=$((r>>1))
+ pick2=$((r & 1))
+ r=$((r>>1))
+ pick3=$((r & 1))
+
+ comma=""
+ flags=""
+ [ $pick1 -ne 0 ] && flags="tso"
+ [ $pick1 -ne 0 ] && comma=","
+ [ $pick2 -ne 0 ] && flags=${flags}${comma}"gso"
+ [ $pick3 -ne 0 ] && flags=${flags}${comma}"gro"
+
+ [ -z $flags ] && return
+
+ ip netns exec $ns ethtool -K $dev $flags off 2>/dev/null
+ [ $? -eq 0 ] && echo "INFO: set $ns dev $dev: ethtool -K $flags off"
+}
+
+set_ethtool_flags ns3 ns3eth2
+set_ethtool_flags ns4 ns4eth3
+
print_file_err()
{
ls -l "$1" 1>&2