test: disable reassembly tests and system modification script

One of basic requirements from day one for maek test is that it should
run unpriviledged, so modifying system paremeters is unacceptable.

Disabling script and reassembly tests as they need to be done in
different way.

Change-Id: I063c73eb82f2ebd7499e8adb1574a9fd2475fb5b
Signed-off-by: Damjan Marion <damarion@cisco.com>

1 files changed, 0 insertions, 966 deletions

diff --git a/test/test_reassembly.py b/test/test_reassembly.py
deleted file mode 100644
index a2d77d493de..00000000000
--- a/test/test_reassembly.py
+++ /dev/null
@@ -1,966 +0,0 @@
-#!/usr/bin/env python
-import unittest
-from random import shuffle
-
-from framework import VppTestCase, VppTestRunner
-
-from scapy.packet import Raw
-from scapy.layers.l2 import Ether, GRE
-from scapy.layers.inet import IP, UDP
-from util import ppp, fragment_rfc791, fragment_rfc8200
-from vpp_punt_socket import VppUDSPuntSocket
-from scapy.layers.inet6 import IPv6, IPv6ExtHdrFragment, ICMPv6ParamProblem,\
-    ICMPv6TimeExceeded
-from vpp_gre_interface import VppGreInterface, VppGre6Interface
-from vpp_ip_route import VppIpRoute, VppRoutePath, DpoProto
-
-test_packet_count = 257
-
-
-class TestIPv4Reassembly(VppTestCase):
-    """ IPv4 Reassembly """
-
-    @classmethod
-    def setUpClass(cls):
-        super(TestIPv4Reassembly, cls).setUpClass()
-
-        cls.create_pg_interfaces([0])
-        cls.pg_if = cls.pg0
-
-        # setup all interfaces
-        for i in cls.pg_interfaces:
-            i.admin_up()
-            i.config_ip4()
-            i.resolve_arp()
-
-        cls.punt_port = 9999
-        cls.punt_socket = VppUDSPuntSocket(cls, cls.punt_port)
-
-        # packet sizes
-        cls.packet_sizes = [64, 512, 1518, 9018]
-        cls.padding = " abcdefghijklmn"
-        cls.create_stream(cls.packet_sizes)
-        cls.create_fragments()
-
-    def setUp(self):
-        """ Test setup - force timeout on existing reassemblies """
-        super(TestIPv4Reassembly, self).setUp()
-        self.vapi.ip_reassembly_set(timeout_ms=0, max_reassemblies=1000,
-                                    expire_walk_interval_ms=10)
-        self.sleep(.25)
-        self.vapi.ip_reassembly_set(timeout_ms=1000000, max_reassemblies=1000,
-                                    expire_walk_interval_ms=10000)
-
-    def tearDown(self):
-        super(TestIPv4Reassembly, self).tearDown()
-        self.logger.debug(self.vapi.ppcli("show ip4-reassembly details"))
-
-    @classmethod
-    def create_stream(cls, packet_sizes, packet_count=test_packet_count):
-        """Create input packet stream for defined interface.
-
-        :param list packet_sizes: Required packet sizes.
-        """
-        for i in range(0, packet_count):
-            info = cls.create_packet_info(cls.pg_if, cls.pg_if)
-            payload = cls.info_to_payload(info)
-            p = (Ether(dst=cls.pg_if.local_mac, src=cls.pg_if.remote_mac) /
-                 IP(id=info.index, src=cls.pg_if.remote_ip4,
-                    dst=cls.pg_if.local_ip4) /
-                 UDP(sport=1234, dport=cls.punt_port) /
-                 Raw(payload))
-            size = packet_sizes[(i // 2) % len(packet_sizes)]
-            cls.extend_packet(p, size, cls.padding)
-            info.data = p
-
-    @classmethod
-    def create_fragments(cls):
-        infos = cls._packet_infos
-        cls.pkt_infos = []
-        for index, info in infos.iteritems():
-            p = info.data
-            # self.logger.debug(ppp("Packet:", p.__class__(str(p))))
-            fragments_400 = fragment_rfc791(p, 400)
-            fragments_300 = fragment_rfc791(p, 300)
-            fragments_200 = [
-                x for f in fragments_400 for x in fragment_rfc791(f, 200)]
-            cls.pkt_infos.append(
-                (index, fragments_400, fragments_300, fragments_200))
-        cls.fragments_400 = [
-            x for (_, frags, _, _) in cls.pkt_infos for x in frags]
-        cls.fragments_300 = [
-            x for (_, _, frags, _) in cls.pkt_infos for x in frags]
-        cls.fragments_200 = [
-            x for (_, _, _, frags) in cls.pkt_infos for x in frags]
-        cls.logger.debug("Fragmented %s packets into %s 400-byte fragments, "
-                         "%s 300-byte fragments and %s 200-byte fragments" %
-                         (len(infos), len(cls.fragments_400),
-                             len(cls.fragments_300), len(cls.fragments_200)))
-
-    def verify_capture(self, capture, dropped_packet_indexes=[]):
-        """Verify captured packet stream.
-
-        :param list capture: Captured packet stream.
-        """
-        info = None
-        seen = set()
-        for packet in capture:
-            try:
-                sw_if_index = packet['sw_if_index']
-                punt_action = packet['punt_action']
-                packet = Ether(packet['packet'])
-                self.logger.debug(ppp("Got packet from %s, action %s" %
-                                      (sw_if_index, punt_action), packet))
-                ip = packet[IP]
-                udp = packet[UDP]
-                payload_info = self.payload_to_info(str(packet[Raw]))
-                packet_index = payload_info.index
-                self.assertTrue(
-                    packet_index not in dropped_packet_indexes,
-                    ppp("Packet received, but should be dropped:", packet))
-                if packet_index in seen:
-                    raise Exception(ppp("Duplicate packet received", packet))
-                seen.add(packet_index)
-                self.assertEqual(payload_info.dst, self.pg_if.sw_if_index)
-                info = self._packet_infos[packet_index]
-                self.assertTrue(info is not None)
-                self.assertEqual(packet_index, info.index)
-                saved_packet = info.data
-                self.assertEqual(ip.src, saved_packet[IP].src)
-                self.assertEqual(ip.dst, saved_packet[IP].dst)
-                self.assertEqual(udp.payload, saved_packet[UDP].payload)
-            except:
-                self.logger.error(ppp("Unexpected or invalid packet:", packet))
-                raise
-        for index in self._packet_infos:
-            self.assertTrue(index in seen or index in dropped_packet_indexes,
-                            "Packet with packet_index %d not received" % index)
-
-    def test_reassembly(self):
-        """ basic reassembly """
-
-        self.pg_enable_capture()
-        self.pg_if.add_stream(self.fragments_200)
-        self.pg_start()
-
-        packets = self.punt_socket.wait_for_packets(len(self.pkt_infos))
-        self.verify_capture(packets)
-        self.pg_if.assert_nothing_captured()
-
-        # run it all again to verify correctness
-        self.pg_enable_capture()
-        self.pg_if.add_stream(self.fragments_200)
-        self.pg_start()
-
-        packets = self.punt_socket.wait_for_packets(len(self.pkt_infos))
-        self.verify_capture(packets)
-        self.pg_if.assert_nothing_captured()
-
-    def test_reversed(self):
-        """ reverse order reassembly """
-
-        fragments = list(self.fragments_200)
-        fragments.reverse()
-
-        self.pg_enable_capture()
-        self.pg_if.add_stream(fragments)
-        self.pg_start()
-
-        packets = self.punt_socket.wait_for_packets(len(self.packet_infos))
-        self.verify_capture(packets)
-        self.pg_if.assert_nothing_captured()
-
-        # run it all again to verify correctness
-        self.pg_enable_capture()
-        self.pg_if.add_stream(fragments)
-        self.pg_start()
-
-        packets = self.punt_socket.wait_for_packets(len(self.packet_infos))
-        self.verify_capture(packets)
-        self.pg_if.assert_nothing_captured()
-
-    def test_random(self):
-        """ random order reassembly """
-
-        fragments = list(self.fragments_200)
-        shuffle(fragments)
-
-        self.pg_enable_capture()
-        self.pg_if.add_stream(fragments)
-        self.pg_start()
-
-        packets = self.punt_socket.wait_for_packets(len(self.packet_infos))
-        self.verify_capture(packets)
-        self.pg_if.assert_nothing_captured()
-
-        # run it all again to verify correctness
-        self.pg_enable_capture()
-        self.pg_if.add_stream(fragments)
-        self.pg_start()
-
-        packets = self.punt_socket.wait_for_packets(len(self.packet_infos))
-        self.verify_capture(packets)
-        self.pg_if.assert_nothing_captured()
-
-    def test_duplicates(self):
-        """ duplicate fragments """
-
-        fragments = [
-            x for (_, frags, _, _) in self.pkt_infos
-            for x in frags
-            for _ in range(0, min(2, len(frags)))
-        ]
-
-        self.pg_enable_capture()
-        self.pg_if.add_stream(fragments)
-        self.pg_start()
-
-        packets = self.punt_socket.wait_for_packets(len(self.pkt_infos))
-        self.verify_capture(packets)
-        self.pg_if.assert_nothing_captured()
-
-    def test_overlap1(self):
-        """ overlapping fragments case #1 """
-
-        fragments = []
-        for _, _, frags_300, frags_200 in self.pkt_infos:
-            if len(frags_300) == 1:
-                fragments.extend(frags_300)
-            else:
-                for i, j in zip(frags_200, frags_300):
-                    fragments.extend(i)
-                    fragments.extend(j)
-
-        self.pg_enable_capture()
-        self.pg_if.add_stream(fragments)
-        self.pg_start()
-
-        packets = self.punt_socket.wait_for_packets(len(self.pkt_infos))
-        self.verify_capture(packets)
-        self.pg_if.assert_nothing_captured()
-
-        # run it all to verify correctness
-        self.pg_enable_capture()
-        self.pg_if.add_stream(fragments)
-        self.pg_start()
-
-        packets = self.punt_socket.wait_for_packets(len(self.pkt_infos))
-        self.verify_capture(packets)
-        self.pg_if.assert_nothing_captured()
-
-    def test_overlap2(self):
-        """ overlapping fragments case #2 """
-
-        fragments = []
-        for _, _, frags_300, frags_200 in self.pkt_infos:
-            if len(frags_300) == 1:
-                fragments.extend(frags_300)
-            else:
-                # care must be taken here so that there are no fragments
-                # received by vpp after reassembly is finished, otherwise
-                # new reassemblies will be started and packet generator will
-                # freak out when it detects unfreed buffers
-                zipped = zip(frags_300, frags_200)
-                for i, j in zipped[:-1]:
-                    fragments.extend(i)
-                    fragments.extend(j)
-                fragments.append(zipped[-1][0])
-
-        self.pg_enable_capture()
-        self.pg_if.add_stream(fragments)
-        self.pg_start()
-
-        packets = self.punt_socket.wait_for_packets(len(self.pkt_infos))
-        self.verify_capture(packets)
-        self.pg_if.assert_nothing_captured()
-
-        # run it all to verify correctness
-        self.pg_enable_capture()
-        self.pg_if.add_stream(fragments)
-        self.pg_start()
-
-        packets = self.punt_socket.wait_for_packets(len(self.pkt_infos))
-        self.verify_capture(packets)
-        self.pg_if.assert_nothing_captured()
-
-    def test_timeout_inline(self):
-        """ timeout (inline) """
-
-        dropped_packet_indexes = set(
-            index for (index, frags, _, _) in self.pkt_infos if len(frags) > 1
-        )
-
-        self.vapi.ip_reassembly_set(timeout_ms=0, max_reassemblies=1000,
-                                    expire_walk_interval_ms=10000)
-
-        self.pg_enable_capture()
-        self.pg_if.add_stream(self.fragments_400)
-        self.pg_start()
-
-        packets = self.punt_socket.wait_for_packets(
-            len(self.pkt_infos) - len(dropped_packet_indexes))
-        self.verify_capture(packets, dropped_packet_indexes)
-        self.pg_if.assert_nothing_captured()
-
-    def test_timeout_cleanup(self):
-        """ timeout (cleanup) """
-
-        # whole packets + fragmented packets sans last fragment
-        fragments = [
-            x for (_, frags_400, _, _) in self.pkt_infos
-            for x in frags_400[:-1 if len(frags_400) > 1 else None]
-        ]
-
-        # last fragments for fragmented packets
-        fragments2 = [frags_400[-1]
-                      for (_, frags_400, _, _) in self.pkt_infos
-                      if len(frags_400) > 1]
-
-        dropped_packet_indexes = set(
-            index for (index, frags_400, _, _) in self.pkt_infos
-            if len(frags_400) > 1)
-
-        self.vapi.ip_reassembly_set(timeout_ms=100, max_reassemblies=1000,
-                                    expire_walk_interval_ms=50)
-
-        self.pg_enable_capture()
-        self.pg_if.add_stream(fragments)
-        self.pg_start()
-
-        self.sleep(.25, "wait before sending rest of fragments")
-
-        self.pg_if.add_stream(fragments2)
-        self.pg_start()
-        self.sleep(.25, "wait for vpp to process packets")
-
-        packets = self.punt_socket.wait_for_packets(
-            len(self.pkt_infos) - len(dropped_packet_indexes))
-        self.verify_capture(packets, dropped_packet_indexes)
-        self.pg_if.assert_nothing_captured()
-
-    def test_disabled(self):
-        """ reassembly disabled """
-
-        dropped_packet_indexes = set(
-            index for (index, frags_400, _, _) in self.pkt_infos
-            if len(frags_400) > 1)
-
-        self.vapi.ip_reassembly_set(timeout_ms=1000, max_reassemblies=0,
-                                    expire_walk_interval_ms=10000)
-
-        self.pg_enable_capture()
-        self.pg_if.add_stream(self.fragments_400)
-        self.pg_start()
-
-        packets = self.punt_socket.wait_for_packets(
-            len(self.pkt_infos) - len(dropped_packet_indexes))
-        self.verify_capture(packets, dropped_packet_indexes)
-        self.pg_if.assert_nothing_captured()
-
-
-class TestIPv6Reassembly(VppTestCase):
-    """ IPv6 Reassembly """
-
-    @classmethod
-    def setUpClass(cls):
-        super(TestIPv6Reassembly, cls).setUpClass()
-
-        cls.create_pg_interfaces([0])
-        cls.pg_if = cls.pg0
-
-        # setup all interfaces
-        for i in cls.pg_interfaces:
-            i.admin_up()
-            i.config_ip6()
-            i.resolve_ndp()
-
-        cls.punt_port = 9999
-        cls.punt_socket = VppUDSPuntSocket(cls, cls.punt_port, is_ip4=0)
-
-        # packet sizes
-        cls.packet_sizes = [64, 512, 1518, 9018]
-        cls.padding = " abcdefghijklmn"
-        cls.create_stream(cls.packet_sizes)
-        cls.create_fragments()
-
-    def setUp(self):
-        """ Test setup - force timeout on existing reassemblies """
-        super(TestIPv6Reassembly, self).setUp()
-        self.vapi.ip_reassembly_set(timeout_ms=0, max_reassemblies=1000,
-                                    expire_walk_interval_ms=10, is_ip6=1)
-        self.sleep(.25)
-        self.vapi.ip_reassembly_set(timeout_ms=1000000, max_reassemblies=1000,
-                                    expire_walk_interval_ms=10000, is_ip6=1)
-
-    def tearDown(self):
-        super(TestIPv6Reassembly, self).tearDown()
-        self.logger.debug(self.vapi.ppcli("show ip6-reassembly details"))
-
-    @classmethod
-    def create_stream(cls, packet_sizes, packet_count=test_packet_count):
-        """Create input packet stream for defined interface.
-
-        :param list packet_sizes: Required packet sizes.
-        """
-        for i in range(0, packet_count):
-            info = cls.create_packet_info(cls.pg_if, cls.pg_if)
-            payload = cls.info_to_payload(info)
-            p = (Ether(dst=cls.pg_if.local_mac, src=cls.pg_if.remote_mac) /
-                 IPv6(src=cls.pg_if.remote_ip6,
-                      dst=cls.pg_if.local_ip6) /
-                 UDP(sport=1234, dport=cls.punt_port) /
-                 Raw(payload))
-            size = packet_sizes[(i // 2) % len(packet_sizes)]
-            cls.extend_packet(p, size, cls.padding)
-            info.data = p
-
-    @classmethod
-    def create_fragments(cls):
-        infos = cls._packet_infos
-        cls.pkt_infos = []
-        for index, info in infos.iteritems():
-            p = info.data
-            # self.logger.debug(ppp("Packet:", p.__class__(str(p))))
-            fragments_400 = fragment_rfc8200(p, info.index, 400)
-            fragments_300 = fragment_rfc8200(p, info.index, 300)
-            cls.pkt_infos.append((index, fragments_400, fragments_300))
-        cls.fragments_400 = [
-            x for _, frags, _ in cls.pkt_infos for x in frags]
-        cls.fragments_300 = [
-            x for _, _, frags in cls.pkt_infos for x in frags]
-        cls.logger.debug("Fragmented %s packets into %s 400-byte fragments, "
-                         "and %s 300-byte fragments" %
-                         (len(infos), len(cls.fragments_400),
-                             len(cls.fragments_300)))
-
-    def verify_capture(self, capture, dropped_packet_indexes=[]):
-        """Verify captured packet strea .
-
-        :param list capture: Captured packet stream.
-        """
-        info = None
-        seen = set()
-        for packet in capture:
-            try:
-                sw_if_index = packet['sw_if_index']
-                punt_action = packet['punt_action']
-                packet = Ether(packet['packet'])
-                self.logger.debug(ppp("Got packet from %s, action %s" %
-                                      (sw_if_index, punt_action), packet))
-                ip = packet[IPv6]
-                udp = packet[UDP]
-                payload_info = self.payload_to_info(str(packet[Raw]))
-                packet_index = payload_info.index
-                self.assertTrue(
-                    packet_index not in dropped_packet_indexes,
-                    ppp("Packet received, but should be dropped:", packet))
-                if packet_index in seen:
-                    raise Exception(ppp("Duplicate packet received", packet))
-                seen.add(packet_index)
-                self.assertEqual(payload_info.dst, self.pg_if.sw_if_index)
-                info = self._packet_infos[packet_index]
-                self.assertTrue(info is not None)
-                self.assertEqual(packet_index, info.index)
-                saved_packet = info.data
-                self.assertEqual(ip.src, saved_packet[IPv6].src)
-                self.assertEqual(ip.dst, saved_packet[IPv6].dst)
-                self.assertEqual(udp.payload, saved_packet[UDP].payload)
-            except:
-                self.logger.error(ppp("Unexpected or invalid packet:", packet))
-                raise
-        for index in self._packet_infos:
-            self.assertTrue(index in seen or index in dropped_packet_indexes,
-                            "Packet with packet_index %d not received" % index)
-
-    def test_reassembly(self):
-        """ basic reassembly """
-
-        self.pg_enable_capture()
-        self.pg_if.add_stream(self.fragments_400)
-        self.pg_start()
-
-        packets = self.punt_socket.wait_for_packets(len(self.pkt_infos))
-        self.verify_capture(packets)
-        self.pg_if.assert_nothing_captured()
-
-        # run it all again to verify correctness
-        self.pg_enable_capture()
-        self.pg_if.add_stream(self.fragments_400)
-        self.pg_start()
-
-        packets = self.punt_socket.wait_for_packets(len(self.pkt_infos))
-        self.verify_capture(packets)
-        self.pg_if.assert_nothing_captured()
-
-    def test_reversed(self):
-        """ reverse order reassembly """
-
-        fragments = list(self.fragments_400)
-        fragments.reverse()
-
-        self.pg_enable_capture()
-        self.pg_if.add_stream(fragments)
-        self.pg_start()
-
-        packets = self.punt_socket.wait_for_packets(len(self.pkt_infos))
-        self.verify_capture(packets)
-        self.pg_if.assert_nothing_captured()
-
-        # run it all again to verify correctness
-        self.pg_enable_capture()
-        self.pg_if.add_stream(fragments)
-        self.pg_start()
-
-        packets = self.punt_socket.wait_for_packets(len(self.pkt_infos))
-        self.verify_capture(packets)
-        self.pg_if.assert_nothing_captured()
-
-    def test_random(self):
-        """ random order reassembly """
-
-        fragments = list(self.fragments_400)
-        shuffle(fragments)
-
-        self.pg_enable_capture()
-        self.pg_if.add_stream(fragments)
-        self.pg_start()
-
-        packets = self.punt_socket.wait_for_packets(len(self.pkt_infos))
-        self.verify_capture(packets)
-        self.pg_if.assert_nothing_captured()
-
-        # run it all again to verify correctness
-        self.pg_enable_capture()
-        self.pg_if.add_stream(fragments)
-        self.pg_start()
-
-        packets = self.punt_socket.wait_for_packets(len(self.pkt_infos))
-        self.verify_capture(packets)
-        self.pg_if.assert_nothing_captured()
-
-    def test_duplicates(self):
-        """ duplicate fragments """
-
-        fragments = [
-            x for (_, frags, _) in self.pkt_infos
-            for x in frags
-            for _ in range(0, min(2, len(frags)))
-        ]
-
-        self.pg_enable_capture()
-        self.pg_if.add_stream(fragments)
-        self.pg_start()
-
-        packets = self.punt_socket.wait_for_packets(len(self.pkt_infos))
-        self.verify_capture(packets)
-        self.pg_if.assert_nothing_captured()
-
-    def test_overlap1(self):
-        """ overlapping fragments case #1 """
-
-        fragments = []
-        for _, frags_400, frags_300 in self.pkt_infos:
-            if len(frags_300) == 1:
-                fragments.extend(frags_400)
-            else:
-                for i, j in zip(frags_300, frags_400):
-                    fragments.extend(i)
-                    fragments.extend(j)
-
-        dropped_packet_indexes = set(
-            index for (index, _, frags) in self.pkt_infos if len(frags) > 1
-        )
-
-        self.pg_enable_capture()
-        self.pg_if.add_stream(fragments)
-        self.pg_start()
-
-        self.sleep(.1, "wait for vpp to process packets")
-        packets = self.punt_socket.wait_for_packets(
-            len(self.pkt_infos) - len(dropped_packet_indexes))
-        self.verify_capture(packets, dropped_packet_indexes)
-        self.pg_if.assert_nothing_captured()
-
-    def test_overlap2(self):
-        """ overlapping fragments case #2 """
-
-        fragments = []
-        for _, frags_400, frags_30 in self.pkt_infos:
-            if len(frags_400) == 1:
-                fragments.extend(frags_400)
-            else:
-                # care must be taken here so that there are no fragments
-                # received by vpp after reassembly is finished, otherwise
-                # new reassemblies will be started and packet generator will
-                # freak out when it detects unfreed buffers
-                zipped = zip(frags_400, frags_30)
-                for i, j in zipped[:-1]:
-                    fragments.extend(i)
-                    fragments.extend(j)
-                fragments.append(zipped[-1][0])
-
-        dropped_packet_indexes = set(
-            index for (index, _, frags) in self.pkt_infos if len(frags) > 1
-        )
-
-        self.pg_enable_capture()
-        self.pg_if.add_stream(fragments)
-        self.pg_start()
-
-        self.sleep(.1, "wait for vpp to process packets")
-        packets = self.punt_socket.wait_for_packets(
-            len(self.pkt_infos) - len(dropped_packet_indexes))
-        self.verify_capture(packets, dropped_packet_indexes)
-        self.pg_if.assert_nothing_captured()
-
-    def test_timeout_inline(self):
-        """ timeout (inline) """
-
-        dropped_packet_indexes = set(
-            index for (index, frags, _) in self.pkt_infos if len(frags) > 1
-        )
-
-        self.vapi.ip_reassembly_set(timeout_ms=0, max_reassemblies=1000,
-                                    expire_walk_interval_ms=10000, is_ip6=1)
-
-        self.pg_enable_capture()
-        self.pg_if.add_stream(self.fragments_400)
-        self.pg_start()
-
-        packets = self.punt_socket.wait_for_packets(
-            len(self.pkt_infos) - len(dropped_packet_indexes))
-        self.verify_capture(packets, dropped_packet_indexes)
-        pkts = self.pg_if.get_capture(
-            expected_count=len(dropped_packet_indexes))
-        for icmp in pkts:
-            self.assertIn(ICMPv6TimeExceeded, icmp)
-            self.assertIn(IPv6ExtHdrFragment, icmp)
-            self.assertIn(icmp[IPv6ExtHdrFragment].id, dropped_packet_indexes)
-            dropped_packet_indexes.remove(icmp[IPv6ExtHdrFragment].id)
-
-    def test_timeout_cleanup(self):
-        """ timeout (cleanup) """
-
-        # whole packets + fragmented packets sans last fragment
-        fragments = [
-            x for (_, frags_400, _) in self.pkt_infos
-            for x in frags_400[:-1 if len(frags_400) > 1 else None]
-        ]
-
-        # last fragments for fragmented packets
-        fragments2 = [frags_400[-1]
-                      for (_, frags_400, _) in self.pkt_infos
-                      if len(frags_400) > 1]
-
-        dropped_packet_indexes = set(
-            index for (index, frags_400, _) in self.pkt_infos
-            if len(frags_400) > 1)
-
-        self.vapi.ip_reassembly_set(timeout_ms=100, max_reassemblies=1000,
-                                    expire_walk_interval_ms=50)
-
-        self.vapi.ip_reassembly_set(timeout_ms=100, max_reassemblies=1000,
-                                    expire_walk_interval_ms=50, is_ip6=1)
-
-        self.pg_enable_capture()
-        self.pg_if.add_stream(fragments)
-        self.pg_start()
-
-        self.sleep(.25, "wait before sending rest of fragments")
-
-        self.pg_if.add_stream(fragments2)
-        self.pg_start()
-        self.sleep(.25, "wait for vpp to process packets")
-
-        packets = self.punt_socket.wait_for_packets(
-            len(self.pkt_infos) - len(dropped_packet_indexes))
-        self.verify_capture(packets, dropped_packet_indexes)
-        pkts = self.pg_if.get_capture(
-            expected_count=len(dropped_packet_indexes))
-        for icmp in pkts:
-            self.assertIn(ICMPv6TimeExceeded, icmp)
-            self.assertIn(IPv6ExtHdrFragment, icmp)
-            self.assertIn(icmp[IPv6ExtHdrFragment].id, dropped_packet_indexes)
-            dropped_packet_indexes.remove(icmp[IPv6ExtHdrFragment].id)
-
-    def test_disabled(self):
-        """ reassembly disabled """
-
-        dropped_packet_indexes = set(
-            index for (index, frags_400, _) in self.pkt_infos
-            if len(frags_400) > 1)
-
-        self.vapi.ip_reassembly_set(timeout_ms=1000, max_reassemblies=0,
-                                    expire_walk_interval_ms=10000, is_ip6=1)
-
-        self.pg_enable_capture()
-        self.pg_if.add_stream(self.fragments_400)
-        self.pg_start()
-
-        packets = self.punt_socket.wait_for_packets(
-            len(self.pkt_infos) - len(dropped_packet_indexes))
-        self.verify_capture(packets, dropped_packet_indexes)
-        self.pg_if.assert_nothing_captured()
-
-    def test_missing_upper(self):
-        """ missing upper layer """
-        p = (Ether(dst=self.pg_if.local_mac, src=self.pg_if.remote_mac) /
-             IPv6(src=self.pg_if.remote_ip6,
-                  dst=self.pg_if.local_ip6) /
-             UDP(sport=1234, dport=self.punt_port) /
-             Raw())
-        self.extend_packet(p, 1000, self.padding)
-        fragments = fragment_rfc8200(p, 1, 500)
-        bad_fragment = p.__class__(str(fragments[1]))
-        bad_fragment[IPv6ExtHdrFragment].nh = 59
-        bad_fragment[IPv6ExtHdrFragment].offset = 0
-        self.pg_enable_capture()
-        self.pg_if.add_stream([bad_fragment])
-        self.pg_start()
-        pkts = self.pg_if.get_capture(expected_count=1)
-        icmp = pkts[0]
-        self.assertIn(ICMPv6ParamProblem, icmp)
-        self.assert_equal(icmp[ICMPv6ParamProblem].code, 3, "ICMP code")
-
-    def test_invalid_frag_size(self):
-        """ fragment size not a multiple of 8 """
-        p = (Ether(dst=self.pg_if.local_mac, src=self.pg_if.remote_mac) /
-             IPv6(src=self.pg_if.remote_ip6,
-                  dst=self.pg_if.local_ip6) /
-             UDP(sport=1234, dport=self.punt_port) /
-             Raw())
-        self.extend_packet(p, 1000, self.padding)
-        fragments = fragment_rfc8200(p, 1, 500)
-        bad_fragment = fragments[0]
-        self.extend_packet(bad_fragment, len(bad_fragment) + 5)
-        self.pg_enable_capture()
-        self.pg_if.add_stream([bad_fragment])
-        self.pg_start()
-        pkts = self.pg_if.get_capture(expected_count=1)
-        icmp = pkts[0]
-        self.assertIn(ICMPv6ParamProblem, icmp)
-        self.assert_equal(icmp[ICMPv6ParamProblem].code, 0, "ICMP code")
-
-    def test_invalid_packet_size(self):
-        """ total packet size > 65535 """
-        p = (Ether(dst=self.pg_if.local_mac, src=self.pg_if.remote_mac) /
-             IPv6(src=self.pg_if.remote_ip6,
-                  dst=self.pg_if.local_ip6) /
-             UDP(sport=1234, dport=self.punt_port) /
-             Raw())
-        self.extend_packet(p, 1000, self.padding)
-        fragments = fragment_rfc8200(p, 1, 500)
-        bad_fragment = fragments[1]
-        bad_fragment[IPv6ExtHdrFragment].offset = 65500
-        self.pg_enable_capture()
-        self.pg_if.add_stream([bad_fragment])
-        self.pg_start()
-        pkts = self.pg_if.get_capture(expected_count=1)
-        icmp = pkts[0]
-        self.assertIn(ICMPv6ParamProblem, icmp)
-        self.assert_equal(icmp[ICMPv6ParamProblem].code, 0, "ICMP code")
-
-
-class TestFIFReassembly(VppTestCase):
-    """ Fragments in fragments reassembly """
-
-    @classmethod
-    def setUpClass(cls):
-        super(TestFIFReassembly, cls).setUpClass()
-
-        cls.create_pg_interfaces([0])
-        cls.pg_if = cls.pg0
-        cls.pg_if.admin_up()
-        cls.pg_if.config_ip4()
-        cls.pg_if.resolve_arp()
-        cls.pg_if.config_ip6()
-        cls.pg_if.resolve_ndp()
-
-        cls.punt_port = 9999
-        cls.punt4_socket = VppUDSPuntSocket(cls, cls.punt_port)
-        cls.punt6_socket = VppUDSPuntSocket(cls, cls.punt_port, is_ip4=0)
-        cls.packet_sizes = [64, 512, 1518, 9018]
-        cls.padding = " abcdefghijklmn"
-
-    def setUp(self):
-        """ Test setup - force timeout on existing reassemblies """
-        super(TestFIFReassembly, self).setUp()
-        self.vapi.ip_reassembly_set(timeout_ms=0, max_reassemblies=1000,
-                                    expire_walk_interval_ms=10)
-        self.vapi.ip_reassembly_set(timeout_ms=0, max_reassemblies=1000,
-                                    expire_walk_interval_ms=10, is_ip6=1)
-        self.sleep(.25)
-        self.vapi.ip_reassembly_set(timeout_ms=1000000, max_reassemblies=1000,
-                                    expire_walk_interval_ms=10000)
-        self.vapi.ip_reassembly_set(timeout_ms=1000000, max_reassemblies=1000,
-                                    expire_walk_interval_ms=10000, is_ip6=1)
-
-    def tearDown(self):
-        self.logger.debug(self.vapi.ppcli("show ip4-reassembly details"))
-        self.logger.debug(self.vapi.ppcli("show ip6-reassembly details"))
-        super(TestFIFReassembly, self).tearDown()
-
-    def verify_capture(self, capture, ip_class, dropped_packet_indexes=[]):
-        """Verify captured packet stream.
-
-        :param list capture: Captured packet stream.
-        """
-        info = None
-        seen = set()
-        for packet in capture:
-            try:
-                sw_if_index = packet['sw_if_index']
-                punt_action = packet['punt_action']
-                packet = Ether(packet['packet'])
-                self.logger.debug(ppp("Got packet from %s, action %s" %
-                                      (sw_if_index, punt_action), packet))
-                ip = packet[ip_class]
-                udp = packet[UDP]
-                payload_info = self.payload_to_info(str(packet[Raw]))
-                packet_index = payload_info.index
-                self.assertTrue(
-                    packet_index not in dropped_packet_indexes,
-                    ppp("Packet received, but should be dropped:", packet))
-                if packet_index in seen:
-                    raise Exception(ppp("Duplicate packet received", packet))
-                seen.add(packet_index)
-                self.assertEqual(payload_info.dst, self.pg_if.sw_if_index)
-                info = self._packet_infos[packet_index]
-                self.assertTrue(info is not None)
-                self.assertEqual(packet_index, info.index)
-                saved_packet = info.data
-                self.assertEqual(ip.src, saved_packet[ip_class].src)
-                self.assertEqual(ip.dst, saved_packet[ip_class].dst)
-                self.assertEqual(udp.payload, saved_packet[UDP].payload)
-            except:
-                self.logger.error(ppp("Unexpected or invalid packet:", packet))
-                raise
-        for index in self._packet_infos:
-            self.assertTrue(index in seen or index in dropped_packet_indexes,
-                            "Packet with packet_index %d not received" % index)
-
-    def test_fif4(self):
-        """ Fragments in fragments (4o4) """
-
-        # TODO this should be ideally in setUpClass, but then we hit a bug
-        # with VppIpRoute incorrectly reporting it's present when it's not
-        # so we need to manually remove the vpp config, thus we cannot have
-        # it shared for multiple test cases
-        self.tun_ip4 = "1.1.1.2"
-
-        self.gre4 = VppGreInterface(self, self.pg0.local_ip4, self.tun_ip4)
-        self.gre4.add_vpp_config()
-        self.gre4.admin_up()
-        self.gre4.config_ip4()
-
-        self.route4 = VppIpRoute(self, self.tun_ip4, 32,
-                                 [VppRoutePath(self.pg0.remote_ip4,
-                                               self.pg0.sw_if_index)])
-        self.route4.add_vpp_config()
-
-        self.reset_packet_infos()
-        for i in range(test_packet_count):
-            info = self.create_packet_info(self.pg0, self.pg0)
-            payload = self.info_to_payload(info)
-            p = (IP(id=i, src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
-                 UDP(sport=1234, dport=self.punt_port) /
-                 Raw(payload))
-            size = self.packet_sizes[(i // 2) % len(self.packet_sizes)]
-            self.extend_packet(p, size, self.padding)
-            info.data = p
-
-        fragments = [x for _, p in self._packet_infos.iteritems()
-                     for x in fragment_rfc791(p.data, 400)]
-
-        encapped_fragments = \
-            [Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
-             IP(src=self.tun_ip4, dst=self.pg0.local_ip4) /
-                GRE() /
-                p
-                for p in fragments]
-
-        fragmented_encapped_fragments = \
-            [x for p in encapped_fragments
-             for x in fragment_rfc791(p, 200)]
-
-        self.pg0.add_stream(fragmented_encapped_fragments)
-
-        self.pg_enable_capture(self.pg_interfaces)
-        self.pg_start()
-
-        self.pg0.assert_nothing_captured()
-        packets = self.punt4_socket.wait_for_packets(len(self._packet_infos))
-        self.verify_capture(packets, IP)
-
-        # TODO remove gre vpp config by hand until VppIpRoute gets fixed
-        # so that it's query_vpp_config() works as it should
-        self.gre4.remove_vpp_config()
-
-    def test_fif6(self):
-        """ Fragments in fragments (6o6) """
-        # TODO this should be ideally in setUpClass, but then we hit a bug
-        # with VppIpRoute incorrectly reporting it's present when it's not
-        # so we need to manually remove the vpp config, thus we cannot have
-        # it shared for multiple test cases
-        self.tun_ip6 = "1002::1"
-
-        self.gre6 = VppGre6Interface(self, self.pg0.local_ip6, self.tun_ip6)
-        self.gre6.add_vpp_config()
-        self.gre6.admin_up()
-        self.gre6.config_ip6()
-
-        self.route6 = VppIpRoute(self, self.tun_ip6, 128,
-                                 [VppRoutePath(self.pg0.remote_ip6,
-                                               self.pg0.sw_if_index,
-                                               proto=DpoProto.DPO_PROTO_IP6)],
-                                 is_ip6=1)
-        self.route6.add_vpp_config()
-
-        self.reset_packet_infos()
-        for i in range(test_packet_count):
-            info = self.create_packet_info(self.pg0, self.pg0)
-            payload = self.info_to_payload(info)
-            p = (IPv6(src=self.pg0.remote_ip6, dst=self.pg0.local_ip6) /
-                 UDP(sport=1234, dport=self.punt_port) /
-                 Raw(payload))
-            size = self.packet_sizes[(i // 2) % len(self.packet_sizes)]
-            self.extend_packet(p, size, self.padding)
-            info.data = p
-
-        fragments = [x for _, i in self._packet_infos.iteritems()
-                     for x in fragment_rfc8200(
-                         i.data, i.index, 400)]
-
-        encapped_fragments = \
-            [Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
-             IPv6(src=self.tun_ip6, dst=self.pg0.local_ip6) /
-                GRE() /
-                p
-                for p in fragments]
-
-        fragmented_encapped_fragments = \
-            [x for p in encapped_fragments for x in (
-                fragment_rfc8200(
-                    p,
-                    2 * len(self._packet_infos) + p[IPv6ExtHdrFragment].id,
-                    200)
-                if IPv6ExtHdrFragment in p else [p]
-            )
-            ]
-
-        self.pg0.add_stream(fragmented_encapped_fragments)
-
-        self.pg_enable_capture(self.pg_interfaces)
-        self.pg_start()
-
-        self.pg0.assert_nothing_captured()
-        packets = self.punt6_socket.wait_for_packets(len(self._packet_infos))
-        self.verify_capture(packets, IPv6)
-
-        # TODO remove gre vpp config by hand until VppIpRoute gets fixed
-        # so that it's query_vpp_config() works as it should
-        self.gre6.remove_vpp_config()
-
-
-if __name__ == '__main__':
-    unittest.main(testRunner=VppTestRunner)