selftests: forwarding: gre_multipath: Update next-hop statistics match criteria

gre_multipath test was using egress vlan_id matching on flows, for the
purpose of collecting next-hops statistics, later to be compared
against configured weights.
As matching on vlan_id on egress direction is not supported on all HW
devices, change the match criteria to use destination IP.
Signed-off-by: NNir Dotan <nird@mellanox.com>
Acked-by: NPetr Machata <petrm@mellanox.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

tools/testing/selftests/net/forwarding/gre_multipath.sh

@@ -95,10 +95,10 @@ sw1_create()
 	   nexthop dev g1b
 
 	tc qdisc add dev $ul1 clsact
-	tc filter add dev $ul1 egress pref 111 prot 802.1q \
-	   flower vlan_id 111 action pass
-	tc filter add dev $ul1 egress pref 222 prot 802.1q \
-	   flower vlan_id 222 action pass
+	tc filter add dev $ul1 egress pref 111 prot ipv4 \
+	   flower dst_ip 192.0.2.66 action pass
+	tc filter add dev $ul1 egress pref 222 prot ipv4 \
+	   flower dst_ip 192.0.2.82 action pass
 }
 
 sw1_destroy()