tests: move test source to vpp/test

- Generate copyright year and version
  instead of using hard-coded data

Type: refactor

Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
Change-Id: I6058f5025323b3aa483f5df4a2c4371e27b5914e

1 files changed, 0 insertions, 809 deletions

diff --git a/src/plugins/srv6-ad/test/test_srv6_ad.py b/src/plugins/srv6-ad/test/test_srv6_ad.py
deleted file mode 100644
index 2627df32aa9..00000000000
--- a/src/plugins/srv6-ad/test/test_srv6_ad.py
+++ /dev/null
@@ -1,809 +0,0 @@
-#!/usr/bin/env python3
-
-import unittest
-import binascii
-from socket import AF_INET6
-
-from framework import VppTestCase, VppTestRunner
-from vpp_ip import DpoProto
-from vpp_ip_route import VppIpRoute, VppRoutePath, VppIpTable
-from vpp_srv6 import SRv6LocalSIDBehaviors, VppSRv6LocalSID, VppSRv6Policy, \
-    SRv6PolicyType, VppSRv6Steering, SRv6PolicySteeringTypes
-
-import scapy.compat
-from scapy.packet import Raw
-from scapy.layers.l2 import Ether, Dot1Q
-from scapy.layers.inet6 import IPv6, UDP, IPv6ExtHdrSegmentRouting
-from scapy.layers.inet import IP, UDP
-
-from util import ppp
-
-
-class TestSRv6(VppTestCase):
-    """ SRv6 Dynamic Proxy plugin Test Case """
-
-    @classmethod
-    def setUpClass(self):
-        super(TestSRv6, self).setUpClass()
-
-    @classmethod
-    def tearDownClass(cls):
-        super(TestSRv6, cls).tearDownClass()
-
-    def setUp(self):
-        """ Perform test setup before each test case.
-        """
-        super(TestSRv6, self).setUp()
-
-        # packet sizes, inclusive L2 overhead
-        self.pg_packet_sizes = [64, 512, 1518, 9018]
-
-        # reset packet_infos
-        self.reset_packet_infos()
-
-    def tearDown(self):
-        """ Clean up test setup after each test case.
-        """
-        self.teardown_interfaces()
-
-        super(TestSRv6, self).tearDown()
-
-    def configure_interface(self,
-                            interface,
-                            ipv6=False, ipv4=False,
-                            ipv6_table_id=0, ipv4_table_id=0):
-        """ Configure interface.
-        :param ipv6: configure IPv6 on interface
-        :param ipv4: configure IPv4 on interface
-        :param ipv6_table_id: FIB table_id for IPv6
-        :param ipv4_table_id: FIB table_id for IPv4
-        """
-        self.logger.debug("Configuring interface %s" % (interface.name))
-        if ipv6:
-            self.logger.debug("Configuring IPv6")
-            interface.set_table_ip6(ipv6_table_id)
-            interface.config_ip6()
-            interface.resolve_ndp(timeout=5)
-        if ipv4:
-            self.logger.debug("Configuring IPv4")
-            interface.set_table_ip4(ipv4_table_id)
-            interface.config_ip4()
-            interface.resolve_arp()
-        interface.admin_up()
-
-    def setup_interfaces(self, ipv6=[], ipv4=[],
-                         ipv6_table_id=[], ipv4_table_id=[]):
-        """ Create and configure interfaces.
-
-        :param ipv6: list of interface IPv6 capabilities
-        :param ipv4: list of interface IPv4 capabilities
-        :param ipv6_table_id: list of intf IPv6 FIB table_ids
-        :param ipv4_table_id: list of intf IPv4 FIB table_ids
-        :returns: List of created interfaces.
-        """
-        # how many interfaces?
-        if len(ipv6):
-            count = len(ipv6)
-        else:
-            count = len(ipv4)
-        self.logger.debug("Creating and configuring %d interfaces" % (count))
-
-        # fill up ipv6 and ipv4 lists if needed
-        # not enabled (False) is the default
-        if len(ipv6) < count:
-            ipv6 += (count - len(ipv6)) * [False]
-        if len(ipv4) < count:
-            ipv4 += (count - len(ipv4)) * [False]
-
-        # fill up table_id lists if needed
-        # table_id 0 (global) is the default
-        if len(ipv6_table_id) < count:
-            ipv6_table_id += (count - len(ipv6_table_id)) * [0]
-        if len(ipv4_table_id) < count:
-            ipv4_table_id += (count - len(ipv4_table_id)) * [0]
-
-        # create 'count' pg interfaces
-        self.create_pg_interfaces(range(count))
-
-        # setup all interfaces
-        for i in range(count):
-            intf = self.pg_interfaces[i]
-            self.configure_interface(intf,
-                                     ipv6[i], ipv4[i],
-                                     ipv6_table_id[i], ipv4_table_id[i])
-
-        if any(ipv6):
-            self.logger.debug(self.vapi.cli("show ip6 neighbors"))
-        if any(ipv4):
-            self.logger.debug(self.vapi.cli("show ip4 neighbors"))
-        self.logger.debug(self.vapi.cli("show interface"))
-        self.logger.debug(self.vapi.cli("show hardware"))
-
-        return self.pg_interfaces
-
-    def teardown_interfaces(self):
-        """ Unconfigure and bring down interface.
-        """
-        self.logger.debug("Tearing down interfaces")
-        # tear down all interfaces
-        # AFAIK they cannot be deleted
-        for i in self.pg_interfaces:
-            self.logger.debug("Tear down interface %s" % (i.name))
-            i.admin_down()
-            i.unconfig()
-            i.set_table_ip4(0)
-            i.set_table_ip6(0)
-
-    def test_SRv6_End_AD_IPv6(self):
-        """ Test SRv6 End.AD behavior with IPv6 traffic.
-        """
-        self.src_addr = 'a0::'
-        self.sid_list = ['a1::', 'a2::a6', 'a3::']
-        self.test_sid_index = 1
-
-        # send traffic to one destination interface
-        # source and destination interfaces are IPv6 only
-        self.setup_interfaces(ipv6=[True, True])
-
-        # configure route to next segment
-        route = VppIpRoute(self, self.sid_list[self.test_sid_index + 1], 128,
-                           [VppRoutePath(self.pg0.remote_ip6,
-                                         self.pg0.sw_if_index,
-                                         proto=DpoProto.DPO_PROTO_IP6)])
-        route.add_vpp_config()
-
-        # configure SRv6 localSID behavior
-        cli_str = "sr localsid address " + \
-                  self.sid_list[self.test_sid_index] + \
-                  " behavior end.ad" + \
-                  " nh " + self.pg1.remote_ip6 + \
-                  " oif " + self.pg1.name + \
-                  " iif " + self.pg1.name
-        self.vapi.cli(cli_str)
-
-        # log the localsids
-        self.logger.debug(self.vapi.cli("show sr localsid"))
-
-        # send one packet per packet size
-        count = len(self.pg_packet_sizes)
-
-        # prepare IPv6 in SRv6 headers
-        packet_header1 = self.create_packet_header_IPv6_SRH_IPv6(
-            srcaddr=self.src_addr,
-            sidlist=self.sid_list[::-1],
-            segleft=len(self.sid_list) - self.test_sid_index - 1)
-
-        # generate packets (pg0->pg1)
-        pkts1 = self.create_stream(self.pg0, self.pg1, packet_header1,
-                                   self.pg_packet_sizes, count)
-
-        # send packets and verify received packets
-        self.send_and_verify_pkts(self.pg0, pkts1, self.pg1,
-                                  self.compare_rx_tx_packet_End_AD_IPv6_out)
-
-        # log the localsid counters
-        self.logger.info(self.vapi.cli("show sr localsid"))
-
-        # prepare IPv6 header for returning packets
-        packet_header2 = self.create_packet_header_IPv6()
-
-        # generate returning packets (pg1->pg0)
-        pkts2 = self.create_stream(self.pg1, self.pg0, packet_header2,
-                                   self.pg_packet_sizes, count)
-
-        # send packets and verify received packets
-        self.send_and_verify_pkts(self.pg1, pkts2, self.pg0,
-                                  self.compare_rx_tx_packet_End_AD_IPv6_in)
-
-        # log the localsid counters
-        self.logger.info(self.vapi.cli("show sr localsid"))
-
-        # remove SRv6 localSIDs
-        cli_str = "sr localsid del address " + \
-                  self.sid_list[self.test_sid_index]
-        self.vapi.cli(cli_str)
-
-        # cleanup interfaces
-        self.teardown_interfaces()
-
-    def compare_rx_tx_packet_End_AD_IPv6_out(self, tx_pkt, rx_pkt):
-        """ Compare input and output packet after passing End.AD with IPv6
-
-        :param tx_pkt: transmitted packet
-        :param rx_pkt: received packet
-        """
-
-        # get first (outer) IPv6 header of rx'ed packet
-        rx_ip = rx_pkt.getlayer(IPv6)
-
-        tx_ip = tx_pkt.getlayer(IPv6)
-        tx_ip2 = tx_pkt.getlayer(IPv6, 2)
-
-        # verify if rx'ed packet has no SRH
-        self.assertFalse(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
-
-        # the whole rx_ip pkt should be equal to tx_ip2
-        # except for the hlim field
-        #   -> adjust tx'ed hlim to expected hlim
-        tx_ip2.hlim = tx_ip2.hlim - 1
-
-        self.assertEqual(rx_ip, tx_ip2)
-
-        self.logger.debug("packet verification: SUCCESS")
-
-    def compare_rx_tx_packet_End_AD_IPv6_in(self, tx_pkt, rx_pkt):
-        """ Compare input and output packet after passing End.AD
-
-        :param tx_pkt: transmitted packet
-        :param rx_pkt: received packet
-        """
-
-        # get first (outer) IPv6 header of rx'ed packet
-        rx_ip = rx_pkt.getlayer(IPv6)
-        # received ip.src should be equal to SR Policy source
-        self.assertEqual(rx_ip.src, self.src_addr)
-        # received ip.dst should be equal to expected sidlist next segment
-        self.assertEqual(rx_ip.dst, self.sid_list[self.test_sid_index + 1])
-
-        # rx'ed packet should have SRH
-        self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
-
-        # get SRH
-        rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
-        # rx'ed seglist should be equal to SID-list in reversed order
-        self.assertEqual(rx_srh.addresses, self.sid_list[::-1])
-        # segleft should be equal to previous segleft value minus 1
-        self.assertEqual(rx_srh.segleft,
-                         len(self.sid_list) - self.test_sid_index - 2)
-        # lastentry should be equal to the SID-list length minus 1
-        self.assertEqual(rx_srh.lastentry, len(self.sid_list) - 1)
-
-        # the whole rx'ed pkt beyond SRH should be equal to tx'ed pkt
-        # except for the hop-limit field
-        tx_ip = tx_pkt.getlayer(IPv6)
-        #   -> update tx'ed hlim to the expected hlim
-        tx_ip.hlim -= 1
-        #   -> check payload
-        self.assertEqual(rx_srh.payload, tx_ip)
-
-        self.logger.debug("packet verification: SUCCESS")
-
-    def test_SRv6_End_AD_IPv4(self):
-        """ Test SRv6 End.AD behavior with IPv4 traffic.
-        """
-        self.src_addr = 'a0::'
-        self.sid_list = ['a1::', 'a2::a4', 'a3::']
-        self.test_sid_index = 1
-
-        # send traffic to one destination interface
-        # source and destination interfaces are IPv6 only
-        self.setup_interfaces(ipv6=[True, False], ipv4=[False, True])
-
-        # configure route to next segment
-        route = VppIpRoute(self, self.sid_list[self.test_sid_index + 1], 128,
-                           [VppRoutePath(self.pg0.remote_ip6,
-                                         self.pg0.sw_if_index,
-                                         proto=DpoProto.DPO_PROTO_IP6)])
-        route.add_vpp_config()
-
-        # configure SRv6 localSID behavior
-        cli_str = "sr localsid address " + \
-                  self.sid_list[self.test_sid_index] + \
-                  " behavior end.ad" + \
-                  " nh " + self.pg1.remote_ip4 + \
-                  " oif " + self.pg1.name + \
-                  " iif " + self.pg1.name
-        self.vapi.cli(cli_str)
-
-        # log the localsids
-        self.logger.debug(self.vapi.cli("show sr localsid"))
-
-        # send one packet per packet size
-        count = len(self.pg_packet_sizes)
-
-        # prepare IPv4 in SRv6 headers
-        packet_header1 = self.create_packet_header_IPv6_SRH_IPv4(
-            srcaddr=self.src_addr,
-            sidlist=self.sid_list[::-1],
-            segleft=len(self.sid_list) - self.test_sid_index - 1)
-
-        # generate packets (pg0->pg1)
-        pkts1 = self.create_stream(self.pg0, self.pg1, packet_header1,
-                                   self.pg_packet_sizes, count)
-
-        # send packets and verify received packets
-        self.send_and_verify_pkts(self.pg0, pkts1, self.pg1,
-                                  self.compare_rx_tx_packet_End_AD_IPv4_out)
-
-        # log the localsid counters
-        self.logger.info(self.vapi.cli("show sr localsid"))
-
-        # prepare IPv6 header for returning packets
-        packet_header2 = self.create_packet_header_IPv4()
-
-        # generate returning packets (pg1->pg0)
-        pkts2 = self.create_stream(self.pg1, self.pg0, packet_header2,
-                                   self.pg_packet_sizes, count)
-
-        # send packets and verify received packets
-        self.send_and_verify_pkts(self.pg1, pkts2, self.pg0,
-                                  self.compare_rx_tx_packet_End_AD_IPv4_in)
-
-        # log the localsid counters
-        self.logger.info(self.vapi.cli("show sr localsid"))
-
-        # remove SRv6 localSIDs
-        cli_str = "sr localsid del address " + \
-                  self.sid_list[self.test_sid_index]
-        self.vapi.cli(cli_str)
-
-        # cleanup interfaces
-        self.teardown_interfaces()
-
-    def compare_rx_tx_packet_End_AD_IPv4_out(self, tx_pkt, rx_pkt):
-        """ Compare input and output packet after passing End.AD with IPv4
-
-        :param tx_pkt: transmitted packet
-        :param rx_pkt: received packet
-        """
-
-        # get IPv4 header of rx'ed packet
-        rx_ip = rx_pkt.getlayer(IP)
-
-        tx_ip = tx_pkt.getlayer(IPv6)
-        tx_ip2 = tx_pkt.getlayer(IP)
-
-        # verify if rx'ed packet has no SRH
-        self.assertFalse(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
-
-        # the whole rx_ip pkt should be equal to tx_ip2
-        # except for the ttl field and ip checksum
-        #   -> adjust tx'ed ttl to expected ttl
-        tx_ip2.ttl = tx_ip2.ttl - 1
-        #   -> set tx'ed ip checksum to None and let scapy recompute
-        tx_ip2.chksum = None
-        # read back the pkt (with str()) to force computing these fields
-        # probably other ways to accomplish this are possible
-        tx_ip2 = IP(scapy.compat.raw(tx_ip2))
-
-        self.assertEqual(rx_ip, tx_ip2)
-
-        self.logger.debug("packet verification: SUCCESS")
-
-    def compare_rx_tx_packet_End_AD_IPv4_in(self, tx_pkt, rx_pkt):
-        """ Compare input and output packet after passing End.AD
-
-        :param tx_pkt: transmitted packet
-        :param rx_pkt: received packet
-        """
-
-        # get first (outer) IPv6 header of rx'ed packet
-        rx_ip = rx_pkt.getlayer(IPv6)
-        # received ip.src should be equal to SR Policy source
-        self.assertEqual(rx_ip.src, self.src_addr)
-        # received ip.dst should be equal to expected sidlist next segment
-        self.assertEqual(rx_ip.dst, self.sid_list[self.test_sid_index + 1])
-
-        # rx'ed packet should have SRH
-        self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
-
-        # get SRH
-        rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
-        # rx'ed seglist should be equal to SID-list in reversed order
-        self.assertEqual(rx_srh.addresses, self.sid_list[::-1])
-        # segleft should be equal to previous segleft value minus 1
-        self.assertEqual(rx_srh.segleft,
-                         len(self.sid_list) - self.test_sid_index - 2)
-        # lastentry should be equal to the SID-list length minus 1
-        self.assertEqual(rx_srh.lastentry, len(self.sid_list) - 1)
-
-        # the whole rx'ed pkt beyond SRH should be equal to tx'ed pkt
-        # except for the ttl field and ip checksum
-        tx_ip = tx_pkt.getlayer(IP)
-        #   -> adjust tx'ed ttl to expected ttl
-        tx_ip.ttl = tx_ip.ttl - 1
-        #   -> set tx'ed ip checksum to None and let scapy recompute
-        tx_ip.chksum = None
-        #   -> read back the pkt (with str()) to force computing these fields
-        # probably other ways to accomplish this are possible
-        self.assertEqual(rx_srh.payload, IP(scapy.compat.raw(tx_ip)))
-
-        self.logger.debug("packet verification: SUCCESS")
-
-    def test_SRv6_End_AD_L2(self):
-        """ Test SRv6 End.AD behavior with L2 traffic.
-        """
-        self.src_addr = 'a0::'
-        self.sid_list = ['a1::', 'a2::a4', 'a3::']
-        self.test_sid_index = 1
-
-        # send traffic to one destination interface
-        # source and destination interfaces are IPv6 only
-        self.setup_interfaces(ipv6=[True, False])
-
-        # configure route to next segment
-        route = VppIpRoute(self, self.sid_list[self.test_sid_index + 1], 128,
-                           [VppRoutePath(self.pg0.remote_ip6,
-                                         self.pg0.sw_if_index,
-                                         proto=DpoProto.DPO_PROTO_IP6)])
-        route.add_vpp_config()
-
-        # configure SRv6 localSID behavior
-        cli_str = "sr localsid address " + \
-                  self.sid_list[self.test_sid_index] + \
-                  " behavior end.ad" + \
-                  " oif " + self.pg1.name + \
-                  " iif " + self.pg1.name
-        self.vapi.cli(cli_str)
-
-        # log the localsids
-        self.logger.debug(self.vapi.cli("show sr localsid"))
-
-        # send one packet per packet size
-        count = len(self.pg_packet_sizes)
-
-        # prepare L2 in SRv6 headers
-        packet_header1 = self.create_packet_header_IPv6_SRH_L2(
-            srcaddr=self.src_addr,
-            sidlist=self.sid_list[::-1],
-            segleft=len(self.sid_list) - self.test_sid_index - 1,
-            vlan=0)
-
-        # generate packets (pg0->pg1)
-        pkts1 = self.create_stream(self.pg0, self.pg1, packet_header1,
-                                   self.pg_packet_sizes, count)
-
-        # send packets and verify received packets
-        self.send_and_verify_pkts(self.pg0, pkts1, self.pg1,
-                                  self.compare_rx_tx_packet_End_AD_L2_out)
-
-        # log the localsid counters
-        self.logger.info(self.vapi.cli("show sr localsid"))
-
-        # prepare L2 header for returning packets
-        packet_header2 = self.create_packet_header_L2()
-
-        # generate returning packets (pg1->pg0)
-        pkts2 = self.create_stream(self.pg1, self.pg0, packet_header2,
-                                   self.pg_packet_sizes, count)
-
-        # send packets and verify received packets
-        self.send_and_verify_pkts(self.pg1, pkts2, self.pg0,
-                                  self.compare_rx_tx_packet_End_AD_L2_in)
-
-        # log the localsid counters
-        self.logger.info(self.vapi.cli("show sr localsid"))
-
-        # remove SRv6 localSIDs
-        cli_str = "sr localsid del address " + \
-                  self.sid_list[self.test_sid_index]
-        self.vapi.cli(cli_str)
-
-        # cleanup interfaces
-        self.teardown_interfaces()
-
-    def compare_rx_tx_packet_End_AD_L2_out(self, tx_pkt, rx_pkt):
-        """ Compare input and output packet after passing End.AD with L2
-
-        :param tx_pkt: transmitted packet
-        :param rx_pkt: received packet
-        """
-
-        # get IPv4 header of rx'ed packet
-        rx_eth = rx_pkt.getlayer(Ether)
-
-        tx_ip = tx_pkt.getlayer(IPv6)
-        # we can't just get the 2nd Ether layer
-        # get the Raw content and dissect it as Ether
-        tx_eth1 = Ether(scapy.compat.raw(tx_pkt[Raw]))
-
-        # verify if rx'ed packet has no SRH
-        self.assertFalse(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
-
-        # the whole rx_eth pkt should be equal to tx_eth1
-        self.assertEqual(rx_eth, tx_eth1)
-
-        self.logger.debug("packet verification: SUCCESS")
-
-    def compare_rx_tx_packet_End_AD_L2_in(self, tx_pkt, rx_pkt):
-        """ Compare input and output packet after passing End.AD
-
-        :param tx_pkt: transmitted packet
-        :param rx_pkt: received packet
-        """
-
-        ####
-        # get first (outer) IPv6 header of rx'ed packet
-        rx_ip = rx_pkt.getlayer(IPv6)
-        # received ip.src should be equal to SR Policy source
-        self.assertEqual(rx_ip.src, self.src_addr)
-        # received ip.dst should be equal to expected sidlist next segment
-        self.assertEqual(rx_ip.dst, self.sid_list[self.test_sid_index + 1])
-
-        # rx'ed packet should have SRH
-        self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
-
-        # get SRH
-        rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
-        # rx'ed seglist should be equal to SID-list in reversed order
-        self.assertEqual(rx_srh.addresses, self.sid_list[::-1])
-        # segleft should be equal to previous segleft value minus 1
-        self.assertEqual(rx_srh.segleft,
-                         len(self.sid_list) - self.test_sid_index - 2)
-        # lastentry should be equal to the SID-list length minus 1
-        self.assertEqual(rx_srh.lastentry, len(self.sid_list) - 1)
-
-        # the whole rx'ed pkt beyond SRH should be equal to tx'ed pkt
-        tx_ether = tx_pkt.getlayer(Ether)
-        self.assertEqual(Ether(scapy.compat.raw(rx_srh.payload)), tx_ether)
-
-        self.logger.debug("packet verification: SUCCESS")
-
-    def create_stream(self, src_if, dst_if, packet_header, packet_sizes,
-                      count):
-        """Create SRv6 input packet stream for defined interface.
-
-        :param VppInterface src_if: Interface to create packet stream for
-        :param VppInterface dst_if: destination interface of packet stream
-        :param packet_header: Layer3 scapy packet headers,
-                L2 is added when not provided,
-                Raw(payload) with packet_info is added
-        :param list packet_sizes: packet stream pckt sizes,sequentially applied
-               to packets in stream have
-        :param int count: number of packets in packet stream
-        :return: list of packets
-        """
-        self.logger.info("Creating packets")
-        pkts = []
-        for i in range(0, count - 1):
-            payload_info = self.create_packet_info(src_if, dst_if)
-            self.logger.debug(
-                "Creating packet with index %d" % (payload_info.index))
-            payload = self.info_to_payload(payload_info)
-            # add L2 header if not yet provided in packet_header
-            if packet_header.getlayer(0).name == 'Ethernet':
-                p = packet_header / Raw(payload)
-            else:
-                p = Ether(dst=src_if.local_mac, src=src_if.remote_mac) / \
-                    packet_header / Raw(payload)
-            size = packet_sizes[i % len(packet_sizes)]
-            self.logger.debug("Packet size %d" % (size))
-            self.extend_packet(p, size)
-            # we need to store the packet with the automatic fields computed
-            # read back the dumped packet (with str())
-            # to force computing these fields
-            # probably other ways are possible
-            p = Ether(scapy.compat.raw(p))
-            payload_info.data = p.copy()
-            self.logger.debug(ppp("Created packet:", p))
-            pkts.append(p)
-        self.logger.info("Done creating packets")
-        return pkts
-
-    def send_and_verify_pkts(self, input, pkts, output, compare_func):
-        """Send packets and verify received packets using compare_func
-
-        :param input: ingress interface of DUT
-        :param pkts: list of packets to transmit
-        :param output: egress interface of DUT
-        :param compare_func: function to compare in and out packets
-        """
-        # add traffic stream to input interface
-        input.add_stream(pkts)
-
-        # enable capture on all interfaces
-        self.pg_enable_capture(self.pg_interfaces)
-
-        # start traffic
-        self.logger.info("Starting traffic")
-        self.pg_start()
-
-        # get output capture
-        self.logger.info("Getting packet capture")
-        capture = output.get_capture()
-
-        # assert nothing was captured on input interface
-        # input.assert_nothing_captured()
-
-        # verify captured packets
-        self.verify_captured_pkts(output, capture, compare_func)
-
-    def create_packet_header_IPv6(self):
-        """Create packet header: IPv6 header, UDP header
-
-        :param dst: IPv6 destination address
-
-        IPv6 source address is 1234::1
-        IPv6 destination address is 4321::1
-        UDP source port and destination port are 1234
-        """
-
-        p = IPv6(src='1234::1', dst='4321::1') / UDP(sport=1234, dport=1234)
-        return p
-
-    def create_packet_header_IPv6_SRH_IPv6(self, srcaddr, sidlist, segleft):
-        """Create packet header: IPv6 encapsulated in SRv6:
-        IPv6 header with SRH, IPv6 header, UDP header
-
-        :param int srcaddr: outer source address
-        :param list sidlist: segment list of outer IPv6 SRH
-        :param int segleft: segments-left field of outer IPv6 SRH
-
-        Outer IPv6 source address is set to srcaddr
-        Outer IPv6 destination address is set to sidlist[segleft]
-        Inner IPv6 source addresses is 1234::1
-        Inner IPv6 destination address is 4321::1
-        UDP source port and destination port are 1234
-        """
-
-        p = IPv6(src=srcaddr, dst=sidlist[segleft]) / \
-            IPv6ExtHdrSegmentRouting(addresses=sidlist,
-                                     segleft=segleft, nh=41) / \
-            IPv6(src='1234::1', dst='4321::1') / \
-            UDP(sport=1234, dport=1234)
-        return p
-
-    def create_packet_header_IPv4(self):
-        """Create packet header: IPv4 header, UDP header
-
-        :param dst: IPv4 destination address
-
-        IPv4 source address is 123.1.1.1
-        IPv4 destination address is 124.1.1.1
-        UDP source port and destination port are 1234
-        """
-
-        p = IP(src='123.1.1.1', dst='124.1.1.1') / UDP(sport=1234, dport=1234)
-        return p
-
-    def create_packet_header_IPv6_SRH_IPv4(self, srcaddr, sidlist, segleft):
-        """Create packet header: IPv4 encapsulated in SRv6:
-        IPv6 header with SRH, IPv4 header, UDP header
-
-        :param int srcaddr: outer source address
-        :param list sidlist: segment list of outer IPv6 SRH
-        :param int segleft: segments-left field of outer IPv6 SRH
-
-        Outer IPv6 source address is set to srcaddr
-        Outer IPv6 destination address is set to sidlist[segleft]
-        Inner IPv4 source address is 123.1.1.1
-        Inner IPv4 destination address is 124.1.1.1
-        UDP source port and destination port are 1234
-        """
-
-        p = IPv6(src=srcaddr, dst=sidlist[segleft]) / \
-            IPv6ExtHdrSegmentRouting(addresses=sidlist,
-                                     segleft=segleft, nh=4) / \
-            IP(src='123.1.1.1', dst='124.1.1.1') / \
-            UDP(sport=1234, dport=1234)
-        return p
-
-    def create_packet_header_L2(self, vlan=0):
-        """Create packet header: L2 header
-
-        :param vlan: if vlan!=0 then add 802.1q header
-        """
-        # Note: the dst addr ('00:55:44:33:22:11') is used in
-        # the compare function compare_rx_tx_packet_T_Encaps_L2
-        # to detect presence of L2 in SRH payload
-        p = Ether(src='00:11:22:33:44:55', dst='00:55:44:33:22:11')
-        etype = 0x8137  # IPX
-        if vlan:
-            # add 802.1q layer
-            p /= Dot1Q(vlan=vlan, type=etype)
-        else:
-            p.type = etype
-        return p
-
-    def create_packet_header_IPv6_SRH_L2(self, srcaddr, sidlist, segleft,
-                                         vlan=0):
-        """Create packet header: L2 encapsulated in SRv6:
-        IPv6 header with SRH, L2
-
-        :param int srcaddr: IPv6 source address
-        :param list sidlist: segment list of outer IPv6 SRH
-        :param int segleft: segments-left field of outer IPv6 SRH
-        :param vlan: L2 vlan; if vlan!=0 then add 802.1q header
-
-        IPv6 source address is set to srcaddr
-        IPv6 destination address is set to sidlist[segleft]
-        """
-        eth = Ether(src='00:11:22:33:44:55', dst='00:55:44:33:22:11')
-        etype = 0x8137  # IPX
-        if vlan:
-            # add 802.1q layer
-            eth /= Dot1Q(vlan=vlan, type=etype)
-        else:
-            eth.type = etype
-
-        p = IPv6(src=srcaddr, dst=sidlist[segleft]) / \
-            IPv6ExtHdrSegmentRouting(addresses=sidlist,
-                                     segleft=segleft, nh=143) / \
-            eth
-        return p
-
-    def get_payload_info(self, packet):
-        """ Extract the payload_info from the packet
-        """
-        # in most cases, payload_info is in packet[Raw]
-        # but packet[Raw] gives the complete payload
-        # (incl L2 header) for the T.Encaps L2 case
-        try:
-            payload_info = self.payload_to_info(packet[Raw])
-
-        except:
-            # remote L2 header from packet[Raw]:
-            # take packet[Raw], convert it to an Ether layer
-            # and then extract Raw from it
-            payload_info = self.payload_to_info(
-                Ether(scapy.compat.raw(packet[Raw]))[Raw])
-
-        return payload_info
-
-    def verify_captured_pkts(self, dst_if, capture, compare_func):
-        """
-        Verify captured packet stream for specified interface.
-        Compare ingress with egress packets using the specified compare fn
-
-        :param dst_if: egress interface of DUT
-        :param capture: captured packets
-        :param compare_func: function to compare in and out packet
-        """
-        self.logger.info("Verifying capture on interface %s using function %s"
-                         % (dst_if.name, compare_func.__name__))
-
-        last_info = dict()
-        for i in self.pg_interfaces:
-            last_info[i.sw_if_index] = None
-        dst_sw_if_index = dst_if.sw_if_index
-
-        for packet in capture:
-            try:
-                # extract payload_info from packet's payload
-                payload_info = self.get_payload_info(packet)
-                packet_index = payload_info.index
-
-                self.logger.debug("Verifying packet with index %d"
-                                  % (packet_index))
-                # packet should have arrived on the expected interface
-                self.assertEqual(payload_info.dst, dst_sw_if_index)
-                self.logger.debug(
-                    "Got packet on interface %s: src=%u (idx=%u)" %
-                    (dst_if.name, payload_info.src, packet_index))
-
-                # search for payload_info with same src and dst if_index
-                # this will give us the transmitted packet
-                next_info = self.get_next_packet_info_for_interface2(
-                    payload_info.src, dst_sw_if_index,
-                    last_info[payload_info.src])
-                last_info[payload_info.src] = next_info
-                # next_info should not be None
-                self.assertTrue(next_info is not None)
-                # index of tx and rx packets should be equal
-                self.assertEqual(packet_index, next_info.index)
-                # data field of next_info contains the tx packet
-                txed_packet = next_info.data
-
-                self.logger.debug(ppp("Transmitted packet:",
-                                      txed_packet))  # ppp=Pretty Print Packet
-
-                self.logger.debug(ppp("Received packet:", packet))
-
-                # compare rcvd packet with expected packet using compare_func
-                compare_func(txed_packet, packet)
-
-            except:
-                self.logger.error(ppp("Unexpected or invalid packet:", packet))
-                raise
-
-        # have all expected packets arrived?
-        for i in self.pg_interfaces:
-            remaining_packet = self.get_next_packet_info_for_interface2(
-                i.sw_if_index, dst_sw_if_index, last_info[i.sw_if_index])
-            self.assertTrue(remaining_packet is None,
-                            "Interface %s: Packet expected from interface %s "
-                            "didn't arrive" % (dst_if.name, i.name))
-
-
-if __name__ == '__main__':
-    unittest.main(testRunner=VppTestRunner)