[PATCH net-next 14/18] selftests: forwarding: vxlan_bridge_1d: Add an ECN encap test

[Ido Schimmel]

From: Petr Machata <pe...@mellanox.com>

Test that ECN bits in the VXLAN envelope are correctly deduced from the
overlay packet.

Signed-off-by: Petr Machata <pe...@mellanox.com>
Signed-off-by: Ido Schimmel <ido...@mellanox.com>
---
 .../net/forwarding/vxlan_bridge_1d.sh         | 26 +++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/tools/testing/selftests/net/forwarding/vxlan_bridge_1d.sh 
b/tools/testing/selftests/net/forwarding/vxlan_bridge_1d.sh
index ac1070937ae7..82a124cbd523 100755
--- a/tools/testing/selftests/net/forwarding/vxlan_bridge_1d.sh
+++ b/tools/testing/selftests/net/forwarding/vxlan_bridge_1d.sh
@@ -70,6 +70,7 @@ export VXPORT
        test_unicast
        test_ttl
        test_tos
+       test_ecn_encap
        reapply_config
        ping_ipv4
        test_flood
@@ -521,6 +522,31 @@ test_tos()
        log_test "VXLAN: envelope TOS inheritance"
 }
 
+__test_ecn_encap()
+{
+       local q=$1; shift
+       local tos=$1; shift
+
+       RET=0
+
+       tc filter add dev v1 egress pref 77 prot ip \
+               flower ip_tos $tos action pass
+       sleep 1
+       vxlan_ping_test $h1 192.0.2.3 "-Q $q" v1 egress 77 10
+       tc filter del dev v1 egress pref 77 prot ip
+
+       log_test "VXLAN: ECN encap: $q->$tos"
+}
+
+test_ecn_encap()
+{
+       # In accordance with INET_ECN_encapsulate()
+       __test_ecn_encap 0x00 0x00
+       __test_ecn_encap 0x01 0x01
+       __test_ecn_encap 0x02 0x02
+       __test_ecn_encap 0x03 0x02
+}
+
 test_all()
 {
        echo "Running tests with UDP port $VXPORT"
-- 
2.19.1