tests: move GSO/GRO tests to src/vnet/gso/test

- Refactor make test code to be co-located with
  the vpp feature source code

Type: test

Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
Change-Id: Id9c5bf2cd01b6c1fd1750b4978d01597ee3bbf53

1 files changed, 713 insertions, 0 deletions

diff --git a/src/vnet/gso/test/test_gso.py b/src/vnet/gso/test/test_gso.py
new file mode 100644
index 00000000000..ba830049e64
--- /dev/null
+++ b/src/vnet/gso/test/test_gso.py
@@ -0,0 +1,713 @@
+#!/usr/bin/env python3
+"""GSO functional tests"""
+
+#
+# Add tests for:
+# - GSO
+# - Verify that sending Jumbo frame without GSO enabled correctly
+# - Verify that sending Jumbo frame with GSO enabled correctly
+# - Verify that sending Jumbo frame with GSO enabled only on ingress interface
+#
+import unittest
+
+from scapy.packet import Raw
+from scapy.layers.inet6 import IPv6, Ether, IP, UDP, ICMPv6PacketTooBig
+from scapy.layers.inet6 import ipv6nh, IPerror6
+from scapy.layers.inet import TCP, ICMP
+from scapy.layers.vxlan import VXLAN
+from scapy.data import ETH_P_IP, ETH_P_IPV6, ETH_P_ARP
+
+from framework import VppTestCase, VppTestRunner
+from vpp_object import VppObject
+from vpp_interface import VppInterface
+from vpp_ip import DpoProto
+from vpp_ip_route import VppIpRoute, VppRoutePath, FibPathProto
+from vpp_ipip_tun_interface import VppIpIpTunInterface
+from vpp_vxlan_tunnel import VppVxlanTunnel
+from socket import AF_INET, AF_INET6, inet_pton
+from util import reassemble4
+
+
+""" Test_gso is a subclass of VPPTestCase classes.
+    GSO tests.
+"""
+
+
+class TestGSO(VppTestCase):
+    """ GSO Test Case """
+
+    def __init__(self, *args):
+        VppTestCase.__init__(self, *args)
+
+    @classmethod
+    def setUpClass(self):
+        super(TestGSO, self).setUpClass()
+        res = self.create_pg_interfaces(range(2))
+        res_gso = self.create_pg_interfaces(range(2, 4), 1, 1460)
+        self.create_pg_interfaces(range(4, 5), 1, 8940)
+        self.pg_interfaces.append(res[0])
+        self.pg_interfaces.append(res[1])
+        self.pg_interfaces.append(res_gso[0])
+        self.pg_interfaces.append(res_gso[1])
+
+    @classmethod
+    def tearDownClass(self):
+        super(TestGSO, self).tearDownClass()
+
+    def setUp(self):
+        super(TestGSO, self).setUp()
+        for i in self.pg_interfaces:
+            i.admin_up()
+            i.config_ip4()
+            i.config_ip6()
+            i.disable_ipv6_ra()
+            i.resolve_arp()
+            i.resolve_ndp()
+
+        self.single_tunnel_bd = 10
+        self.vxlan = VppVxlanTunnel(self, src=self.pg0.local_ip4,
+                                    dst=self.pg0.remote_ip4,
+                                    vni=self.single_tunnel_bd)
+
+        self.vxlan2 = VppVxlanTunnel(self, src=self.pg0.local_ip6,
+                                     dst=self.pg0.remote_ip6,
+                                     vni=self.single_tunnel_bd)
+
+        self.ipip4 = VppIpIpTunInterface(self, self.pg0, self.pg0.local_ip4,
+                                         self.pg0.remote_ip4)
+        self.ipip6 = VppIpIpTunInterface(self, self.pg0, self.pg0.local_ip6,
+                                         self.pg0.remote_ip6)
+
+    def tearDown(self):
+        super(TestGSO, self).tearDown()
+        if not self.vpp_dead:
+            for i in self.pg_interfaces:
+                i.unconfig_ip4()
+                i.unconfig_ip6()
+                i.admin_down()
+
+    def test_gso(self):
+        """ GSO test """
+        #
+        # Send jumbo frame with gso disabled and DF bit is set
+        #
+        p4 = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
+              IP(src=self.pg0.remote_ip4, dst=self.pg1.remote_ip4,
+                 flags='DF') /
+              TCP(sport=1234, dport=1234) /
+              Raw(b'\xa5' * 65200))
+
+        rxs = self.send_and_expect(self.pg0, [p4], self.pg0)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg0.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg0.remote_mac)
+            self.assertEqual(rx[IP].src, self.pg0.local_ip4)
+            self.assertEqual(rx[IP].dst, self.pg0.remote_ip4)
+            self.assertEqual(rx[ICMP].type, 3)  # "dest-unreach"
+            self.assertEqual(rx[ICMP].code, 4)  # "fragmentation-needed"
+
+        #
+        # Send checksum offload frames
+        #
+        p40 = (Ether(src=self.pg2.remote_mac, dst=self.pg2.local_mac) /
+               IP(src=self.pg2.remote_ip4, dst=self.pg0.remote_ip4,
+                  flags='DF') /
+               TCP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 1460))
+
+        rxs = self.send_and_expect(self.pg2, 100*[p40], self.pg0)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg0.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg0.remote_mac)
+            self.assertEqual(rx[IP].src, self.pg2.remote_ip4)
+            self.assertEqual(rx[IP].dst, self.pg0.remote_ip4)
+            payload_len = rx[IP].len - 20 - 20
+            self.assert_ip_checksum_valid(rx)
+            self.assert_tcp_checksum_valid(rx)
+            self.assertEqual(payload_len, len(rx[Raw]))
+
+        p60 = (Ether(src=self.pg2.remote_mac, dst=self.pg2.local_mac) /
+               IPv6(src=self.pg2.remote_ip6, dst=self.pg0.remote_ip6) /
+               TCP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 1440))
+
+        rxs = self.send_and_expect(self.pg2, 100*[p60], self.pg0)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg0.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg0.remote_mac)
+            self.assertEqual(rx[IPv6].src, self.pg2.remote_ip6)
+            self.assertEqual(rx[IPv6].dst, self.pg0.remote_ip6)
+            payload_len = rx[IPv6].plen - 20
+            self.assert_tcp_checksum_valid(rx)
+            self.assertEqual(payload_len, len(rx[Raw]))
+
+        #
+        # Send jumbo frame with gso enabled and DF bit is set
+        # input and output interfaces support GSO
+        #
+        self.vapi.feature_gso_enable_disable(self.pg3.sw_if_index)
+        p41 = (Ether(src=self.pg2.remote_mac, dst=self.pg2.local_mac) /
+               IP(src=self.pg2.remote_ip4, dst=self.pg3.remote_ip4,
+                  flags='DF') /
+               TCP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 65200))
+
+        rxs = self.send_and_expect(self.pg2, 100*[p41], self.pg3, 100)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg3.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg3.remote_mac)
+            self.assertEqual(rx[IP].src, self.pg2.remote_ip4)
+            self.assertEqual(rx[IP].dst, self.pg3.remote_ip4)
+            self.assertEqual(rx[IP].len, 65240)  # 65200 + 20 (IP) + 20 (TCP)
+            self.assertEqual(rx[TCP].sport, 1234)
+            self.assertEqual(rx[TCP].dport, 1234)
+
+        #
+        # ipv6
+        #
+        p61 = (Ether(src=self.pg2.remote_mac, dst=self.pg2.local_mac) /
+               IPv6(src=self.pg2.remote_ip6, dst=self.pg3.remote_ip6) /
+               TCP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 65200))
+
+        rxs = self.send_and_expect(self.pg2, 100*[p61], self.pg3, 100)
+
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg3.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg3.remote_mac)
+            self.assertEqual(rx[IPv6].src, self.pg2.remote_ip6)
+            self.assertEqual(rx[IPv6].dst, self.pg3.remote_ip6)
+            self.assertEqual(rx[IPv6].plen, 65220)  # 65200 + 20 (TCP)
+            self.assertEqual(rx[TCP].sport, 1234)
+            self.assertEqual(rx[TCP].dport, 1234)
+
+        #
+        # Send jumbo frame with gso enabled only on input interface
+        # and DF bit is set. GSO packet will be chunked into gso_size
+        # data payload
+        #
+        self.vapi.feature_gso_enable_disable(self.pg0.sw_if_index)
+        p42 = (Ether(src=self.pg2.remote_mac, dst=self.pg2.local_mac) /
+               IP(src=self.pg2.remote_ip4, dst=self.pg0.remote_ip4,
+                  flags='DF') /
+               TCP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 65200))
+
+        rxs = self.send_and_expect(self.pg2, 5*[p42], self.pg0, 225)
+        size = 0
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg0.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg0.remote_mac)
+            self.assertEqual(rx[IP].src, self.pg2.remote_ip4)
+            self.assertEqual(rx[IP].dst, self.pg0.remote_ip4)
+            payload_len = rx[IP].len - 20 - 20  # len - 20 (IP4) - 20 (TCP)
+            self.assert_ip_checksum_valid(rx)
+            self.assert_tcp_checksum_valid(rx)
+            self.assertEqual(rx[TCP].sport, 1234)
+            self.assertEqual(rx[TCP].dport, 1234)
+            self.assertEqual(payload_len, len(rx[Raw]))
+            size += payload_len
+        self.assertEqual(size, 65200*5)
+
+        #
+        # ipv6
+        #
+        p62 = (Ether(src=self.pg2.remote_mac, dst=self.pg2.local_mac) /
+               IPv6(src=self.pg2.remote_ip6, dst=self.pg0.remote_ip6) /
+               TCP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 65200))
+
+        rxs = self.send_and_expect(self.pg2, 5*[p62], self.pg0, 225)
+        size = 0
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg0.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg0.remote_mac)
+            self.assertEqual(rx[IPv6].src, self.pg2.remote_ip6)
+            self.assertEqual(rx[IPv6].dst, self.pg0.remote_ip6)
+            payload_len = rx[IPv6].plen - 20
+            self.assert_tcp_checksum_valid(rx)
+            self.assertEqual(rx[TCP].sport, 1234)
+            self.assertEqual(rx[TCP].dport, 1234)
+            self.assertEqual(payload_len, len(rx[Raw]))
+            size += payload_len
+        self.assertEqual(size, 65200*5)
+
+        #
+        # Send jumbo frame with gso enabled only on input interface
+        # and DF bit is unset. GSO packet will be fragmented.
+        #
+        self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index, [576, 0, 0, 0])
+        self.vapi.feature_gso_enable_disable(self.pg1.sw_if_index)
+
+        p43 = (Ether(src=self.pg2.remote_mac, dst=self.pg2.local_mac) /
+               IP(src=self.pg2.remote_ip4, dst=self.pg1.remote_ip4) /
+               TCP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 65200))
+
+        rxs = self.send_and_expect(self.pg2, 5*[p43], self.pg1, 5*119)
+        size = 0
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg1.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg1.remote_mac)
+            self.assertEqual(rx[IP].src, self.pg2.remote_ip4)
+            self.assertEqual(rx[IP].dst, self.pg1.remote_ip4)
+            self.assert_ip_checksum_valid(rx)
+            size += rx[IP].len - 20
+        size -= 20*5  # TCP header
+        self.assertEqual(size, 65200*5)
+
+        #
+        # IPv6
+        # Send jumbo frame with gso enabled only on input interface.
+        # ICMPv6 Packet Too Big will be sent back to sender.
+        #
+        self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index, [1280, 0, 0, 0])
+        p63 = (Ether(src=self.pg2.remote_mac, dst=self.pg2.local_mac) /
+               IPv6(src=self.pg2.remote_ip6, dst=self.pg1.remote_ip6) /
+               TCP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 65200))
+
+        rxs = self.send_and_expect(self.pg2, 5*[p63], self.pg2, 5)
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg2.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg2.remote_mac)
+            self.assertEqual(rx[IPv6].src, self.pg2.local_ip6)
+            self.assertEqual(rx[IPv6].dst, self.pg2.remote_ip6)
+            self.assertEqual(rx[IPv6].plen, 1240)  # MTU - IPv6 header
+            self.assertEqual(ipv6nh[rx[IPv6].nh], "ICMPv6")
+            self.assertEqual(rx[ICMPv6PacketTooBig].mtu, 1280)
+            self.assertEqual(rx[IPerror6].src, self.pg2.remote_ip6)
+            self.assertEqual(rx[IPerror6].dst, self.pg1.remote_ip6)
+            self.assertEqual(rx[IPerror6].plen - 20, 65200)
+
+        #
+        # Send jumbo frame with gso enabled only on input interface with 9K MTU
+        # and DF bit is unset. GSO packet will be fragmented. MSS is 8960. GSO
+        # size will be min(MSS, 2048 - 14 - 20) vlib_buffer_t size
+        #
+        self.vapi.sw_interface_set_mtu(self.pg1.sw_if_index, [9000, 0, 0, 0])
+        self.vapi.sw_interface_set_mtu(self.pg4.sw_if_index, [9000, 0, 0, 0])
+        p44 = (Ether(src=self.pg4.remote_mac, dst=self.pg4.local_mac) /
+               IP(src=self.pg4.remote_ip4, dst=self.pg1.remote_ip4) /
+               TCP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 65200))
+
+        rxs = self.send_and_expect(self.pg4, 5*[p44], self.pg1, 165)
+        size = 0
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg1.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg1.remote_mac)
+            self.assertEqual(rx[IP].src, self.pg4.remote_ip4)
+            self.assertEqual(rx[IP].dst, self.pg1.remote_ip4)
+            payload_len = rx[IP].len - 20 - 20  # len - 20 (IP4) - 20 (TCP)
+            self.assert_ip_checksum_valid(rx)
+            self.assert_tcp_checksum_valid(rx)
+            self.assertEqual(payload_len, len(rx[Raw]))
+            size += payload_len
+        self.assertEqual(size, 65200*5)
+
+        #
+        # IPv6
+        #
+        p64 = (Ether(src=self.pg4.remote_mac, dst=self.pg4.local_mac) /
+               IPv6(src=self.pg4.remote_ip6, dst=self.pg1.remote_ip6) /
+               TCP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 65200))
+
+        rxs = self.send_and_expect(self.pg4, 5*[p64], self.pg1, 170)
+        size = 0
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg1.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg1.remote_mac)
+            self.assertEqual(rx[IPv6].src, self.pg4.remote_ip6)
+            self.assertEqual(rx[IPv6].dst, self.pg1.remote_ip6)
+            payload_len = rx[IPv6].plen - 20
+            self.assert_tcp_checksum_valid(rx)
+            self.assertEqual(payload_len, len(rx[Raw]))
+            size += payload_len
+        self.assertEqual(size, 65200*5)
+
+        self.vapi.feature_gso_enable_disable(self.pg0.sw_if_index,
+                                             enable_disable=0)
+        self.vapi.feature_gso_enable_disable(self.pg1.sw_if_index,
+                                             enable_disable=0)
+
+    def test_gso_vxlan(self):
+        """ GSO VXLAN test """
+        self.logger.info(self.vapi.cli("sh int addr"))
+        #
+        # Send jumbo frame with gso enabled only on input interface and
+        # create VXLAN VTEP on VPP pg0, and put vxlan_tunnel0 and pg2
+        # into BD.
+        #
+
+        #
+        # enable ipv4/vxlan
+        #
+        self.vxlan.add_vpp_config()
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=self.vxlan.sw_if_index, bd_id=self.single_tunnel_bd)
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=self.pg2.sw_if_index, bd_id=self.single_tunnel_bd)
+        self.vapi.feature_gso_enable_disable(self.pg0.sw_if_index)
+
+        #
+        # IPv4/IPv4 - VXLAN
+        #
+        p45 = (Ether(src=self.pg2.remote_mac, dst="02:fe:60:1e:a2:79") /
+               IP(src=self.pg2.remote_ip4, dst="172.16.3.3", flags='DF') /
+               TCP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 65200))
+
+        rxs = self.send_and_expect(self.pg2, 5*[p45], self.pg0, 225)
+        size = 0
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg0.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg0.remote_mac)
+            self.assertEqual(rx[IP].src, self.pg0.local_ip4)
+            self.assertEqual(rx[IP].dst, self.pg0.remote_ip4)
+            self.assert_ip_checksum_valid(rx)
+            self.assert_udp_checksum_valid(rx, ignore_zero_checksum=False)
+            self.assertEqual(rx[VXLAN].vni, 10)
+            inner = rx[VXLAN].payload
+            self.assertEqual(rx[IP].len - 20 - 8 - 8, len(inner))
+            self.assertEqual(inner[Ether].src, self.pg2.remote_mac)
+            self.assertEqual(inner[Ether].dst, "02:fe:60:1e:a2:79")
+            self.assertEqual(inner[IP].src, self.pg2.remote_ip4)
+            self.assertEqual(inner[IP].dst, "172.16.3.3")
+            self.assert_ip_checksum_valid(inner)
+            self.assert_tcp_checksum_valid(inner)
+            payload_len = inner[IP].len - 20 - 20
+            self.assertEqual(payload_len, len(inner[Raw]))
+            size += payload_len
+        self.assertEqual(size, 65200*5)
+
+        #
+        # IPv4/IPv6 - VXLAN
+        #
+        p65 = (Ether(src=self.pg2.remote_mac, dst="02:fe:60:1e:a2:79") /
+               IPv6(src=self.pg2.remote_ip6, dst="fd01:3::3") /
+               TCP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 65200))
+
+        rxs = self.send_and_expect(self.pg2, 5*[p65], self.pg0, 225)
+        size = 0
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg0.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg0.remote_mac)
+            self.assertEqual(rx[IP].src, self.pg0.local_ip4)
+            self.assertEqual(rx[IP].dst, self.pg0.remote_ip4)
+            self.assert_ip_checksum_valid(rx)
+            self.assert_udp_checksum_valid(rx, ignore_zero_checksum=False)
+            self.assertEqual(rx[VXLAN].vni, 10)
+            inner = rx[VXLAN].payload
+            self.assertEqual(rx[IP].len - 20 - 8 - 8, len(inner))
+            self.assertEqual(inner[Ether].src, self.pg2.remote_mac)
+            self.assertEqual(inner[Ether].dst, "02:fe:60:1e:a2:79")
+            self.assertEqual(inner[IPv6].src, self.pg2.remote_ip6)
+            self.assertEqual(inner[IPv6].dst, "fd01:3::3")
+            self.assert_tcp_checksum_valid(inner)
+            payload_len = inner[IPv6].plen - 20
+            self.assertEqual(payload_len, len(inner[Raw]))
+            size += payload_len
+        self.assertEqual(size, 65200*5)
+
+        #
+        # disable ipv4/vxlan
+        #
+        self.vxlan.remove_vpp_config()
+
+        #
+        # enable ipv6/vxlan
+        #
+        self.vxlan2.add_vpp_config()
+        self.vapi.sw_interface_set_l2_bridge(
+            rx_sw_if_index=self.vxlan2.sw_if_index,
+            bd_id=self.single_tunnel_bd)
+
+        #
+        # IPv6/IPv4 - VXLAN
+        #
+        p46 = (Ether(src=self.pg2.remote_mac, dst="02:fe:60:1e:a2:79") /
+               IP(src=self.pg2.remote_ip4, dst="172.16.3.3", flags='DF') /
+               TCP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 65200))
+
+        rxs = self.send_and_expect(self.pg2, 5*[p46], self.pg0, 225)
+        size = 0
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg0.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg0.remote_mac)
+            self.assertEqual(rx[IPv6].src, self.pg0.local_ip6)
+            self.assertEqual(rx[IPv6].dst, self.pg0.remote_ip6)
+            self.assert_udp_checksum_valid(rx, ignore_zero_checksum=False)
+            self.assertEqual(rx[VXLAN].vni, 10)
+            inner = rx[VXLAN].payload
+            self.assertEqual(rx[IPv6].plen - 8 - 8, len(inner))
+            self.assertEqual(inner[Ether].src, self.pg2.remote_mac)
+            self.assertEqual(inner[Ether].dst, "02:fe:60:1e:a2:79")
+            self.assertEqual(inner[IP].src, self.pg2.remote_ip4)
+            self.assertEqual(inner[IP].dst, "172.16.3.3")
+            self.assert_ip_checksum_valid(inner)
+            self.assert_tcp_checksum_valid(inner)
+            payload_len = inner[IP].len - 20 - 20
+            self.assertEqual(payload_len, len(inner[Raw]))
+            size += payload_len
+        self.assertEqual(size, 65200*5)
+
+        #
+        # IPv6/IPv6 - VXLAN
+        #
+        p66 = (Ether(src=self.pg2.remote_mac, dst="02:fe:60:1e:a2:79") /
+               IPv6(src=self.pg2.remote_ip6, dst="fd01:3::3") /
+               TCP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 65200))
+
+        rxs = self.send_and_expect(self.pg2, 5*[p66], self.pg0, 225)
+        size = 0
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg0.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg0.remote_mac)
+            self.assertEqual(rx[IPv6].src, self.pg0.local_ip6)
+            self.assertEqual(rx[IPv6].dst, self.pg0.remote_ip6)
+            self.assert_udp_checksum_valid(rx, ignore_zero_checksum=False)
+            self.assertEqual(rx[VXLAN].vni, 10)
+            inner = rx[VXLAN].payload
+            self.assertEqual(rx[IPv6].plen - 8 - 8, len(inner))
+            self.assertEqual(inner[Ether].src, self.pg2.remote_mac)
+            self.assertEqual(inner[Ether].dst, "02:fe:60:1e:a2:79")
+            self.assertEqual(inner[IPv6].src, self.pg2.remote_ip6)
+            self.assertEqual(inner[IPv6].dst, "fd01:3::3")
+            self.assert_tcp_checksum_valid(inner)
+            payload_len = inner[IPv6].plen - 20
+            self.assertEqual(payload_len, len(inner[Raw]))
+            size += payload_len
+        self.assertEqual(size, 65200*5)
+
+        #
+        # disable ipv4/vxlan
+        #
+        self.vxlan2.remove_vpp_config()
+
+        self.vapi.feature_gso_enable_disable(self.pg0.sw_if_index,
+                                             enable_disable=0)
+
+    def test_gso_ipip(self):
+        """ GSO IPIP test """
+        self.logger.info(self.vapi.cli("sh int addr"))
+        #
+        # Send jumbo frame with gso enabled only on input interface and
+        # create IPIP tunnel on VPP pg0.
+        #
+        self.vapi.feature_gso_enable_disable(self.pg0.sw_if_index)
+
+        #
+        # enable ipip4
+        #
+        self.ipip4.add_vpp_config()
+
+        # Set interface up and enable IP on it
+        self.ipip4.admin_up()
+        self.ipip4.set_unnumbered(self.pg0.sw_if_index)
+
+        # Add IPv4 routes via tunnel interface
+        self.ip4_via_ip4_tunnel = VppIpRoute(
+                self, "172.16.10.0", 24,
+                [VppRoutePath("0.0.0.0",
+                              self.ipip4.sw_if_index,
+                              proto=FibPathProto.FIB_PATH_NH_PROTO_IP4)])
+        self.ip4_via_ip4_tunnel.add_vpp_config()
+
+        #
+        # IPv4/IPv4 - IPIP
+        #
+        p47 = (Ether(src=self.pg2.remote_mac, dst="02:fe:60:1e:a2:79") /
+               IP(src=self.pg2.remote_ip4, dst="172.16.10.3", flags='DF') /
+               TCP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 65200))
+
+        rxs = self.send_and_expect(self.pg2, 5*[p47], self.pg0, 225)
+        size = 0
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg0.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg0.remote_mac)
+            self.assertEqual(rx[IP].src, self.pg0.local_ip4)
+            self.assertEqual(rx[IP].dst, self.pg0.remote_ip4)
+            self.assert_ip_checksum_valid(rx)
+            self.assertEqual(rx[IP].proto, 4)  # ipencap
+            inner = rx[IP].payload
+            self.assertEqual(rx[IP].len - 20, len(inner))
+            self.assertEqual(inner[IP].src, self.pg2.remote_ip4)
+            self.assertEqual(inner[IP].dst, "172.16.10.3")
+            self.assert_ip_checksum_valid(inner)
+            self.assert_tcp_checksum_valid(inner)
+            payload_len = inner[IP].len - 20 - 20
+            self.assertEqual(payload_len, len(inner[Raw]))
+            size += payload_len
+        self.assertEqual(size, 65200*5)
+
+        self.ip6_via_ip4_tunnel = VppIpRoute(
+                self, "fd01:10::", 64,
+                [VppRoutePath("::",
+                              self.ipip4.sw_if_index,
+                              proto=FibPathProto.FIB_PATH_NH_PROTO_IP6)])
+        self.ip6_via_ip4_tunnel.add_vpp_config()
+        #
+        # IPv4/IPv6 - IPIP
+        #
+        p67 = (Ether(src=self.pg2.remote_mac, dst="02:fe:60:1e:a2:79") /
+               IPv6(src=self.pg2.remote_ip6, dst="fd01:10::3") /
+               TCP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 65200))
+
+        rxs = self.send_and_expect(self.pg2, 5*[p67], self.pg0, 225)
+        size = 0
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg0.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg0.remote_mac)
+            self.assertEqual(rx[IP].src, self.pg0.local_ip4)
+            self.assertEqual(rx[IP].dst, self.pg0.remote_ip4)
+            self.assert_ip_checksum_valid(rx)
+            self.assertEqual(rx[IP].proto, 41)  # ipv6
+            inner = rx[IP].payload
+            self.assertEqual(rx[IP].len - 20, len(inner))
+            self.assertEqual(inner[IPv6].src, self.pg2.remote_ip6)
+            self.assertEqual(inner[IPv6].dst, "fd01:10::3")
+            self.assert_tcp_checksum_valid(inner)
+            payload_len = inner[IPv6].plen - 20
+            self.assertEqual(payload_len, len(inner[Raw]))
+            size += payload_len
+        self.assertEqual(size, 65200*5)
+
+        #
+        # Send jumbo frame with gso enabled only on input interface and
+        # create IPIP tunnel on VPP pg0. Enable gso feature node on ipip
+        # tunnel - IPSec use case
+        #
+        self.vapi.feature_gso_enable_disable(self.pg0.sw_if_index,
+                                             enable_disable=0)
+        self.vapi.feature_gso_enable_disable(self.ipip4.sw_if_index)
+
+        rxs = self.send_and_expect(self.pg2, 5*[p47], self.pg0, 225)
+        size = 0
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg0.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg0.remote_mac)
+            self.assertEqual(rx[IP].src, self.pg0.local_ip4)
+            self.assertEqual(rx[IP].dst, self.pg0.remote_ip4)
+            self.assert_ip_checksum_valid(rx)
+            self.assertEqual(rx[IP].proto, 4)  # ipencap
+            inner = rx[IP].payload
+            self.assertEqual(rx[IP].len - 20, len(inner))
+            self.assertEqual(inner[IP].src, self.pg2.remote_ip4)
+            self.assertEqual(inner[IP].dst, "172.16.10.3")
+            self.assert_ip_checksum_valid(inner)
+            self.assert_tcp_checksum_valid(inner)
+            payload_len = inner[IP].len - 20 - 20
+            self.assertEqual(payload_len, len(inner[Raw]))
+            size += payload_len
+        self.assertEqual(size, 65200*5)
+
+        #
+        # disable ipip4
+        #
+        self.vapi.feature_gso_enable_disable(self.ipip4.sw_if_index,
+                                             enable_disable=0)
+        self.ip4_via_ip4_tunnel.remove_vpp_config()
+        self.ip6_via_ip4_tunnel.remove_vpp_config()
+        self.ipip4.remove_vpp_config()
+
+        #
+        # enable ipip6
+        #
+        self.vapi.feature_gso_enable_disable(self.pg0.sw_if_index)
+        self.ipip6.add_vpp_config()
+
+        # Set interface up and enable IP on it
+        self.ipip6.admin_up()
+        self.ipip6.set_unnumbered(self.pg0.sw_if_index)
+
+        # Add IPv4 routes via tunnel interface
+        self.ip4_via_ip6_tunnel = VppIpRoute(
+                self, "172.16.10.0", 24,
+                [VppRoutePath("0.0.0.0",
+                              self.ipip6.sw_if_index,
+                              proto=FibPathProto.FIB_PATH_NH_PROTO_IP4)])
+        self.ip4_via_ip6_tunnel.add_vpp_config()
+
+        #
+        # IPv6/IPv4 - IPIP
+        #
+        p48 = (Ether(src=self.pg2.remote_mac, dst="02:fe:60:1e:a2:79") /
+               IP(src=self.pg2.remote_ip4, dst="172.16.10.3", flags='DF') /
+               TCP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 65200))
+
+        rxs = self.send_and_expect(self.pg2, 5*[p48], self.pg0, 225)
+        size = 0
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg0.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg0.remote_mac)
+            self.assertEqual(rx[IPv6].src, self.pg0.local_ip6)
+            self.assertEqual(rx[IPv6].dst, self.pg0.remote_ip6)
+            self.assertEqual(ipv6nh[rx[IPv6].nh], "IP")
+            inner = rx[IPv6].payload
+            self.assertEqual(rx[IPv6].plen, len(inner))
+            self.assertEqual(inner[IP].src, self.pg2.remote_ip4)
+            self.assertEqual(inner[IP].dst, "172.16.10.3")
+            self.assert_ip_checksum_valid(inner)
+            self.assert_tcp_checksum_valid(inner)
+            payload_len = inner[IP].len - 20 - 20
+            self.assertEqual(payload_len, len(inner[Raw]))
+            size += payload_len
+        self.assertEqual(size, 65200*5)
+
+        self.ip6_via_ip6_tunnel = VppIpRoute(
+                self, "fd01:10::", 64,
+                [VppRoutePath("::",
+                              self.ipip6.sw_if_index,
+                              proto=FibPathProto.FIB_PATH_NH_PROTO_IP6)])
+        self.ip6_via_ip6_tunnel.add_vpp_config()
+
+        #
+        # IPv6/IPv6 - IPIP
+        #
+        p68 = (Ether(src=self.pg2.remote_mac, dst="02:fe:60:1e:a2:79") /
+               IPv6(src=self.pg2.remote_ip6, dst="fd01:10::3") /
+               TCP(sport=1234, dport=1234) /
+               Raw(b'\xa5' * 65200))
+
+        rxs = self.send_and_expect(self.pg2, 5*[p68], self.pg0, 225)
+        size = 0
+        for rx in rxs:
+            self.assertEqual(rx[Ether].src, self.pg0.local_mac)
+            self.assertEqual(rx[Ether].dst, self.pg0.remote_mac)
+            self.assertEqual(rx[IPv6].src, self.pg0.local_ip6)
+            self.assertEqual(rx[IPv6].dst, self.pg0.remote_ip6)
+            self.assertEqual(ipv6nh[rx[IPv6].nh], "IPv6")
+            inner = rx[IPv6].payload
+            self.assertEqual(rx[IPv6].plen, len(inner))
+            self.assertEqual(inner[IPv6].src, self.pg2.remote_ip6)
+            self.assertEqual(inner[IPv6].dst, "fd01:10::3")
+            self.assert_tcp_checksum_valid(inner)
+            payload_len = inner[IPv6].plen - 20
+            self.assertEqual(payload_len, len(inner[Raw]))
+            size += payload_len
+        self.assertEqual(size, 65200*5)
+
+        #
+        # disable ipip6
+        #
+        self.ip4_via_ip6_tunnel.remove_vpp_config()
+        self.ip6_via_ip6_tunnel.remove_vpp_config()
+        self.ipip6.remove_vpp_config()
+
+        self.vapi.feature_gso_enable_disable(self.pg0.sw_if_index,
+                                             enable_disable=0)
+
+if __name__ == '__main__':
+    unittest.main(testRunner=VppTestRunner)