testing/test_runner: Enable GRO on veth interfaces

When setting up the test environment, make sure to enable GRO on the veth
interfaces, so that XDP redirection will work.

Signed-off-by: Toke Høiland-Jørgensen <[email protected]>

Author: tohojo

lib/testing/test_runner.sh

@@ -302,8 +302,8 @@ init_ns()
     ip link add dev "$nsname" type veth peer name "$peername"
     set_sysctls $nsname
 
-    ethtool -K "$nsname" rxvlan off txvlan off
-    ethtool -K "$peername" rxvlan off txvlan off
+    ethtool -K "$nsname" rxvlan off txvlan off gro on
+    ethtool -K "$peername" rxvlan off txvlan off gro on
 
     OUTSIDE_MAC=$(iface_macaddr "$nsname")
     INSIDE_MAC=$(iface_macaddr "$peername")