+++ /dev/null
-#!/usr/bin/env python3
-
-import unittest
-import binascii
-from socket import AF_INET6
-
-from framework import VppTestCase, VppTestRunner
-from vpp_ip_route import VppIpRoute, VppRoutePath, FibPathProto, 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 Test Case """
-
- @classmethod
- def setUpClass(cls):
- super(TestSRv6, cls).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)
-
- @unittest.skipUnless(0, "PC to fix")
- def test_SRv6_T_Encaps(self):
- """ Test SRv6 Transit.Encaps behavior for IPv6.
- """
- # send traffic to one destination interface
- # source and destination are IPv6 only
- self.setup_interfaces(ipv6=[True, True])
-
- # configure FIB entries
- route = VppIpRoute(self, "a4::", 64,
- [VppRoutePath(self.pg1.remote_ip6,
- self.pg1.sw_if_index)])
- route.add_vpp_config()
-
- # configure encaps IPv6 source address
- # needs to be done before SR Policy config
- # TODO: API?
- self.vapi.cli("set sr encaps source addr a3::")
-
- bsid = 'a3::9999:1'
- # configure SRv6 Policy
- # Note: segment list order: first -> last
- sr_policy = VppSRv6Policy(
- self, bsid=bsid,
- is_encap=1,
- sr_type=SRv6PolicyType.SR_POLICY_TYPE_DEFAULT,
- weight=1, fib_table=0,
- segments=['a4::', 'a5::', 'a6::c7'],
- source='a3::')
- sr_policy.add_vpp_config()
- self.sr_policy = sr_policy
-
- # log the sr policies
- self.logger.info(self.vapi.cli("show sr policies"))
-
- # steer IPv6 traffic to a7::/64 into SRv6 Policy
- # use the bsid of the above self.sr_policy
- pol_steering = VppSRv6Steering(
- self,
- bsid=self.sr_policy.bsid,
- prefix="a7::", mask_width=64,
- traffic_type=SRv6PolicySteeringTypes.SR_STEER_IPV6,
- sr_policy_index=0, table_id=0,
- sw_if_index=0)
- pol_steering.add_vpp_config()
-
- # log the sr steering policies
- self.logger.info(self.vapi.cli("show sr steering policies"))
-
- # create packets
- count = len(self.pg_packet_sizes)
- dst_inner = 'a7::1234'
- pkts = []
-
- # create IPv6 packets without SRH
- packet_header = self.create_packet_header_IPv6(dst_inner)
- # create traffic stream pg0->pg1
- pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
- self.pg_packet_sizes, count))
-
- # create IPv6 packets with SRH
- # packets with segments-left 1, active segment a7::
- packet_header = self.create_packet_header_IPv6_SRH(
- sidlist=['a8::', 'a7::', 'a6::'],
- segleft=1)
- # create traffic stream pg0->pg1
- pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
- self.pg_packet_sizes, count))
-
- # create IPv6 packets with SRH and IPv6
- # packets with segments-left 1, active segment a7::
- packet_header = self.create_packet_header_IPv6_SRH_IPv6(
- dst_inner,
- sidlist=['a8::', 'a7::', 'a6::'],
- segleft=1)
- # create traffic stream pg0->pg1
- pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
- self.pg_packet_sizes, count))
-
- # send packets and verify received packets
- self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
- self.compare_rx_tx_packet_T_Encaps)
-
- # log the localsid counters
- self.logger.info(self.vapi.cli("show sr localsid"))
-
- # remove SR steering
- pol_steering.remove_vpp_config()
- self.logger.info(self.vapi.cli("show sr steering policies"))
-
- # remove SR Policies
- self.sr_policy.remove_vpp_config()
- self.logger.info(self.vapi.cli("show sr policies"))
-
- # remove FIB entries
- # done by tearDown
-
- # cleanup interfaces
- self.teardown_interfaces()
-
- @unittest.skipUnless(0, "PC to fix")
- def test_SRv6_T_Insert(self):
- """ Test SRv6 Transit.Insert behavior (IPv6 only).
- """
- # send traffic to one destination interface
- # source and destination are IPv6 only
- self.setup_interfaces(ipv6=[True, True])
-
- # configure FIB entries
- route = VppIpRoute(self, "a4::", 64,
- [VppRoutePath(self.pg1.remote_ip6,
- self.pg1.sw_if_index)])
- route.add_vpp_config()
-
- # configure encaps IPv6 source address
- # needs to be done before SR Policy config
- # TODO: API?
- self.vapi.cli("set sr encaps source addr a3::")
-
- bsid = 'a3::9999:1'
- # configure SRv6 Policy
- # Note: segment list order: first -> last
- sr_policy = VppSRv6Policy(
- self, bsid=bsid,
- is_encap=0,
- sr_type=SRv6PolicyType.SR_POLICY_TYPE_DEFAULT,
- weight=1, fib_table=0,
- segments=['a4::', 'a5::', 'a6::c7'],
- source='a3::')
- sr_policy.add_vpp_config()
- self.sr_policy = sr_policy
-
- # log the sr policies
- self.logger.info(self.vapi.cli("show sr policies"))
-
- # steer IPv6 traffic to a7::/64 into SRv6 Policy
- # use the bsid of the above self.sr_policy
- pol_steering = VppSRv6Steering(
- self,
- bsid=self.sr_policy.bsid,
- prefix="a7::", mask_width=64,
- traffic_type=SRv6PolicySteeringTypes.SR_STEER_IPV6,
- sr_policy_index=0, table_id=0,
- sw_if_index=0)
- pol_steering.add_vpp_config()
-
- # log the sr steering policies
- self.logger.info(self.vapi.cli("show sr steering policies"))
-
- # create packets
- count = len(self.pg_packet_sizes)
- dst_inner = 'a7::1234'
- pkts = []
-
- # create IPv6 packets without SRH
- packet_header = self.create_packet_header_IPv6(dst_inner)
- # create traffic stream pg0->pg1
- pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
- self.pg_packet_sizes, count))
-
- # create IPv6 packets with SRH
- # packets with segments-left 1, active segment a7::
- packet_header = self.create_packet_header_IPv6_SRH(
- sidlist=['a8::', 'a7::', 'a6::'],
- segleft=1)
- # create traffic stream pg0->pg1
- pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
- self.pg_packet_sizes, count))
-
- # send packets and verify received packets
- self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
- self.compare_rx_tx_packet_T_Insert)
-
- # log the localsid counters
- self.logger.info(self.vapi.cli("show sr localsid"))
-
- # remove SR steering
- pol_steering.remove_vpp_config()
- self.logger.info(self.vapi.cli("show sr steering policies"))
-
- # remove SR Policies
- self.sr_policy.remove_vpp_config()
- self.logger.info(self.vapi.cli("show sr policies"))
-
- # remove FIB entries
- # done by tearDown
-
- # cleanup interfaces
- self.teardown_interfaces()
-
- @unittest.skipUnless(0, "PC to fix")
- def test_SRv6_T_Encaps_IPv4(self):
- """ Test SRv6 Transit.Encaps behavior for IPv4.
- """
- # send traffic to one destination interface
- # source interface is IPv4 only
- # destination interface is IPv6 only
- self.setup_interfaces(ipv6=[False, True], ipv4=[True, False])
-
- # configure FIB entries
- route = VppIpRoute(self, "a4::", 64,
- [VppRoutePath(self.pg1.remote_ip6,
- self.pg1.sw_if_index)])
- route.add_vpp_config()
-
- # configure encaps IPv6 source address
- # needs to be done before SR Policy config
- # TODO: API?
- self.vapi.cli("set sr encaps source addr a3::")
-
- bsid = 'a3::9999:1'
- # configure SRv6 Policy
- # Note: segment list order: first -> last
- sr_policy = VppSRv6Policy(
- self, bsid=bsid,
- is_encap=1,
- sr_type=SRv6PolicyType.SR_POLICY_TYPE_DEFAULT,
- weight=1, fib_table=0,
- segments=['a4::', 'a5::', 'a6::c7'],
- source='a3::')
- sr_policy.add_vpp_config()
- self.sr_policy = sr_policy
-
- # log the sr policies
- self.logger.info(self.vapi.cli("show sr policies"))
-
- # steer IPv4 traffic to 7.1.1.0/24 into SRv6 Policy
- # use the bsid of the above self.sr_policy
- pol_steering = VppSRv6Steering(
- self,
- bsid=self.sr_policy.bsid,
- prefix="7.1.1.0", mask_width=24,
- traffic_type=SRv6PolicySteeringTypes.SR_STEER_IPV4,
- sr_policy_index=0, table_id=0,
- sw_if_index=0)
- pol_steering.add_vpp_config()
-
- # log the sr steering policies
- self.logger.info(self.vapi.cli("show sr steering policies"))
-
- # create packets
- count = len(self.pg_packet_sizes)
- dst_inner = '7.1.1.123'
- pkts = []
-
- # create IPv4 packets
- packet_header = self.create_packet_header_IPv4(dst_inner)
- # create traffic stream pg0->pg1
- pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
- self.pg_packet_sizes, count))
-
- # send packets and verify received packets
- self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
- self.compare_rx_tx_packet_T_Encaps_IPv4)
-
- # log the localsid counters
- self.logger.info(self.vapi.cli("show sr localsid"))
-
- # remove SR steering
- pol_steering.remove_vpp_config()
- self.logger.info(self.vapi.cli("show sr steering policies"))
-
- # remove SR Policies
- self.sr_policy.remove_vpp_config()
- self.logger.info(self.vapi.cli("show sr policies"))
-
- # remove FIB entries
- # done by tearDown
-
- # cleanup interfaces
- self.teardown_interfaces()
-
- @unittest.skip("VPP crashes after running this test")
- def test_SRv6_T_Encaps_L2(self):
- """ Test SRv6 Transit.Encaps behavior for L2.
- """
- # send traffic to one destination interface
- # source interface is IPv4 only TODO?
- # destination interface is IPv6 only
- self.setup_interfaces(ipv6=[False, True], ipv4=[False, False])
-
- # configure FIB entries
- route = VppIpRoute(self, "a4::", 64,
- [VppRoutePath(self.pg1.remote_ip6,
- self.pg1.sw_if_index)])
- route.add_vpp_config()
-
- # configure encaps IPv6 source address
- # needs to be done before SR Policy config
- # TODO: API?
- self.vapi.cli("set sr encaps source addr a3::")
-
- bsid = 'a3::9999:1'
- # configure SRv6 Policy
- # Note: segment list order: first -> last
- sr_policy = VppSRv6Policy(
- self, bsid=bsid,
- is_encap=1,
- sr_type=SRv6PolicyType.SR_POLICY_TYPE_DEFAULT,
- weight=1, fib_table=0,
- segments=['a4::', 'a5::', 'a6::c7'],
- source='a3::')
- sr_policy.add_vpp_config()
- self.sr_policy = sr_policy
-
- # log the sr policies
- self.logger.info(self.vapi.cli("show sr policies"))
-
- # steer L2 traffic into SRv6 Policy
- # use the bsid of the above self.sr_policy
- pol_steering = VppSRv6Steering(
- self,
- bsid=self.sr_policy.bsid,
- prefix="::", mask_width=0,
- traffic_type=SRv6PolicySteeringTypes.SR_STEER_L2,
- sr_policy_index=0, table_id=0,
- sw_if_index=self.pg0.sw_if_index)
- pol_steering.add_vpp_config()
-
- # log the sr steering policies
- self.logger.info(self.vapi.cli("show sr steering policies"))
-
- # create packets
- count = len(self.pg_packet_sizes)
- pkts = []
-
- # create L2 packets without dot1q header
- packet_header = self.create_packet_header_L2()
- # create traffic stream pg0->pg1
- pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
- self.pg_packet_sizes, count))
-
- # create L2 packets with dot1q header
- packet_header = self.create_packet_header_L2(vlan=123)
- # create traffic stream pg0->pg1
- pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
- self.pg_packet_sizes, count))
-
- # send packets and verify received packets
- self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
- self.compare_rx_tx_packet_T_Encaps_L2)
-
- # log the localsid counters
- self.logger.info(self.vapi.cli("show sr localsid"))
-
- # remove SR steering
- pol_steering.remove_vpp_config()
- self.logger.info(self.vapi.cli("show sr steering policies"))
-
- # remove SR Policies
- self.sr_policy.remove_vpp_config()
- self.logger.info(self.vapi.cli("show sr policies"))
-
- # remove FIB entries
- # done by tearDown
-
- # cleanup interfaces
- self.teardown_interfaces()
-
- def test_SRv6_End(self):
- """ Test SRv6 End (without PSP) behavior.
- """
- # send traffic to one destination interface
- # source and destination interfaces are IPv6 only
- self.setup_interfaces(ipv6=[True, True])
-
- # configure FIB entries
- route = VppIpRoute(self, "a4::", 64,
- [VppRoutePath(self.pg1.remote_ip6,
- self.pg1.sw_if_index)])
- route.add_vpp_config()
-
- # configure SRv6 localSID End without PSP behavior
- localsid = VppSRv6LocalSID(
- self, localsid='A3::0',
- behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_END,
- nh_addr=0,
- end_psp=0,
- sw_if_index=0,
- vlan_index=0,
- fib_table=0)
- localsid.add_vpp_config()
- # log the localsids
- self.logger.debug(self.vapi.cli("show sr localsid"))
-
- # create IPv6 packets with SRH (SL=2, SL=1, SL=0)
- # send one packet per SL value per packet size
- # SL=0 packet with localSID End with USP needs 2nd SRH
- count = len(self.pg_packet_sizes)
- dst_inner = 'a4::1234'
- pkts = []
-
- # packets with segments-left 2, active segment a3::
- packet_header = self.create_packet_header_IPv6_SRH_IPv6(
- dst_inner,
- sidlist=['a5::', 'a4::', 'a3::'],
- segleft=2)
- # create traffic stream pg0->pg1
- pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
- self.pg_packet_sizes, count))
-
- # packets with segments-left 1, active segment a3::
- packet_header = self.create_packet_header_IPv6_SRH_IPv6(
- dst_inner,
- sidlist=['a4::', 'a3::', 'a2::'],
- segleft=1)
- # add to traffic stream pg0->pg1
- pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
- self.pg_packet_sizes, count))
-
- # TODO: test behavior with SL=0 packet (needs 2*SRH?)
-
- expected_count = len(pkts)
-
- # packets without SRH (should not crash)
- packet_header = self.create_packet_header_IPv6('a3::')
- # create traffic stream pg0->pg1
- pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
- self.pg_packet_sizes, count))
-
- # send packets and verify received packets
- self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
- self.compare_rx_tx_packet_End,
- expected_count=expected_count)
-
- # log the localsid counters
- self.logger.info(self.vapi.cli("show sr localsid"))
-
- # remove SRv6 localSIDs
- localsid.remove_vpp_config()
-
- # remove FIB entries
- # done by tearDown
-
- # cleanup interfaces
- self.teardown_interfaces()
-
- def test_SRv6_End_with_PSP(self):
- """ Test SRv6 End with PSP behavior.
- """
- # send traffic to one destination interface
- # source and destination interfaces are IPv6 only
- self.setup_interfaces(ipv6=[True, True])
-
- # configure FIB entries
- route = VppIpRoute(self, "a4::", 64,
- [VppRoutePath(self.pg1.remote_ip6,
- self.pg1.sw_if_index)])
- route.add_vpp_config()
-
- # configure SRv6 localSID End with PSP behavior
- localsid = VppSRv6LocalSID(
- self, localsid='A3::0',
- behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_END,
- nh_addr=0,
- end_psp=1,
- sw_if_index=0,
- vlan_index=0,
- fib_table=0)
- localsid.add_vpp_config()
- # log the localsids
- self.logger.debug(self.vapi.cli("show sr localsid"))
-
- # create IPv6 packets with SRH (SL=2, SL=1)
- # send one packet per SL value per packet size
- # SL=0 packet with localSID End with PSP is dropped
- count = len(self.pg_packet_sizes)
- dst_inner = 'a4::1234'
- pkts = []
-
- # packets with segments-left 2, active segment a3::
- packet_header = self.create_packet_header_IPv6_SRH_IPv6(
- dst_inner,
- sidlist=['a5::', 'a4::', 'a3::'],
- segleft=2)
- # create traffic stream pg0->pg1
- pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
- self.pg_packet_sizes, count))
-
- # packets with segments-left 1, active segment a3::
- packet_header = self.create_packet_header_IPv6_SRH_IPv6(
- dst_inner,
- sidlist=['a4::', 'a3::', 'a2::'],
- segleft=1)
- # add to traffic stream pg0->pg1
- pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
- self.pg_packet_sizes, count))
-
- # send packets and verify received packets
- self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
- self.compare_rx_tx_packet_End_PSP)
-
- # log the localsid counters
- self.logger.info(self.vapi.cli("show sr localsid"))
-
- # remove SRv6 localSIDs
- localsid.remove_vpp_config()
-
- # remove FIB entries
- # done by tearDown
-
- # cleanup interfaces
- self.teardown_interfaces()
-
- def test_SRv6_End_X(self):
- """ Test SRv6 End.X (without PSP) behavior.
- """
- # create three interfaces (1 source, 2 destinations)
- # source and destination interfaces are IPv6 only
- self.setup_interfaces(ipv6=[True, True, True])
-
- # configure FIB entries
- # a4::/64 via pg1 and pg2
- route = VppIpRoute(self, "a4::", 64,
- [VppRoutePath(self.pg1.remote_ip6,
- self.pg1.sw_if_index),
- VppRoutePath(self.pg2.remote_ip6,
- self.pg2.sw_if_index)])
- route.add_vpp_config()
- self.logger.debug(self.vapi.cli("show ip6 fib"))
-
- # configure SRv6 localSID End.X without PSP behavior
- # End.X points to interface pg1
- localsid = VppSRv6LocalSID(
- self, localsid='A3::C4',
- behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_X,
- nh_addr=self.pg1.remote_ip6,
- end_psp=0,
- sw_if_index=self.pg1.sw_if_index,
- vlan_index=0,
- fib_table=0)
- localsid.add_vpp_config()
- # log the localsids
- self.logger.debug(self.vapi.cli("show sr localsid"))
-
- # create IPv6 packets with SRH (SL=2, SL=1)
- # send one packet per SL value per packet size
- # SL=0 packet with localSID End with PSP is dropped
- count = len(self.pg_packet_sizes)
- dst_inner = 'a4::1234'
- pkts = []
-
- # packets with segments-left 2, active segment a3::c4
- packet_header = self.create_packet_header_IPv6_SRH_IPv6(
- dst_inner,
- sidlist=['a5::', 'a4::', 'a3::c4'],
- segleft=2)
- # create traffic stream pg0->pg1
- pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
- self.pg_packet_sizes, count))
-
- # packets with segments-left 1, active segment a3::c4
- packet_header = self.create_packet_header_IPv6_SRH_IPv6(
- dst_inner,
- sidlist=['a4::', 'a3::c4', 'a2::'],
- segleft=1)
- # add to traffic stream pg0->pg1
- pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
- self.pg_packet_sizes, count))
-
- # send packets and verify received packets
- # using same comparison function as End (no PSP)
- self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
- self.compare_rx_tx_packet_End)
-
- # assert nothing was received on the other interface (pg2)
- self.pg2.assert_nothing_captured("mis-directed packet(s)")
-
- # log the localsid counters
- self.logger.info(self.vapi.cli("show sr localsid"))
-
- # remove SRv6 localSIDs
- localsid.remove_vpp_config()
-
- # remove FIB entries
- # done by tearDown
-
- # cleanup interfaces
- self.teardown_interfaces()
-
- def test_SRv6_End_X_with_PSP(self):
- """ Test SRv6 End.X with PSP behavior.
- """
- # create three interfaces (1 source, 2 destinations)
- # source and destination interfaces are IPv6 only
- self.setup_interfaces(ipv6=[True, True, True])
-
- # configure FIB entries
- # a4::/64 via pg1 and pg2
- route = VppIpRoute(self, "a4::", 64,
- [VppRoutePath(
- self.pg1.remote_ip6,
- self.pg1.sw_if_index),
- VppRoutePath(self.pg2.remote_ip6,
- self.pg2.sw_if_index)])
- route.add_vpp_config()
-
- # configure SRv6 localSID End with PSP behavior
- localsid = VppSRv6LocalSID(
- self, localsid='A3::C4',
- behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_X,
- nh_addr=self.pg1.remote_ip6,
- end_psp=1,
- sw_if_index=self.pg1.sw_if_index,
- vlan_index=0,
- fib_table=0)
- localsid.add_vpp_config()
- # log the localsids
- self.logger.debug(self.vapi.cli("show sr localsid"))
-
- # create IPv6 packets with SRH (SL=2, SL=1)
- # send one packet per SL value per packet size
- # SL=0 packet with localSID End with PSP is dropped
- count = len(self.pg_packet_sizes)
- dst_inner = 'a4::1234'
- pkts = []
-
- # packets with segments-left 2, active segment a3::
- packet_header = self.create_packet_header_IPv6_SRH_IPv6(
- dst_inner,
- sidlist=['a5::', 'a4::', 'a3::c4'],
- segleft=2)
- # create traffic stream pg0->pg1
- pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
- self.pg_packet_sizes, count))
-
- # packets with segments-left 1, active segment a3::
- packet_header = self.create_packet_header_IPv6_SRH_IPv6(
- dst_inner,
- sidlist=['a4::', 'a3::c4', 'a2::'],
- segleft=1)
- # add to traffic stream pg0->pg1
- pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
- self.pg_packet_sizes, count))
-
- # send packets and verify received packets
- # using same comparison function as End with PSP
- self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
- self.compare_rx_tx_packet_End_PSP)
-
- # assert nothing was received on the other interface (pg2)
- self.pg2.assert_nothing_captured("mis-directed packet(s)")
-
- # log the localsid counters
- self.logger.info(self.vapi.cli("show sr localsid"))
-
- # remove SRv6 localSIDs
- localsid.remove_vpp_config()
-
- # remove FIB entries
- # done by tearDown
-
- # cleanup interfaces
- self.teardown_interfaces()
-
- def test_SRv6_End_DX6(self):
- """ Test SRv6 End.DX6 behavior.
- """
- # send traffic to one destination interface
- # source and destination interfaces are IPv6 only
- self.setup_interfaces(ipv6=[True, True])
-
- # configure SRv6 localSID End.DX6 behavior
- localsid = VppSRv6LocalSID(
- self, localsid='A3::C4',
- behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_DX6,
- nh_addr=self.pg1.remote_ip6,
- end_psp=0,
- sw_if_index=self.pg1.sw_if_index,
- vlan_index=0,
- fib_table=0)
- localsid.add_vpp_config()
- # log the localsids
- self.logger.debug(self.vapi.cli("show sr localsid"))
-
- # create IPv6 packets with SRH (SL=0)
- # send one packet per packet size
- count = len(self.pg_packet_sizes)
- dst_inner = 'a4::1234' # inner header destination address
- pkts = []
-
- # packets with SRH, segments-left 0, active segment a3::c4
- packet_header = self.create_packet_header_IPv6_SRH_IPv6(
- dst_inner,
- sidlist=['a3::c4', 'a2::', 'a1::'],
- segleft=0)
- # add to traffic stream pg0->pg1
- pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
- self.pg_packet_sizes, count))
-
- # packets without SRH, IPv6 in IPv6
- # outer IPv6 dest addr is the localsid End.DX6
- packet_header = self.create_packet_header_IPv6_IPv6(
- dst_inner,
- dst_outer='a3::c4')
- # add to traffic stream pg0->pg1
- pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
- self.pg_packet_sizes, count))
-
- # send packets and verify received packets
- self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
- self.compare_rx_tx_packet_End_DX6)
-
- # log the localsid counters
- self.logger.info(self.vapi.cli("show sr localsid"))
-
- # remove SRv6 localSIDs
- localsid.remove_vpp_config()
-
- # cleanup interfaces
- self.teardown_interfaces()
-
- def test_SRv6_End_DT6(self):
- """ Test SRv6 End.DT6 behavior.
- """
- # create three interfaces (1 source, 2 destinations)
- # all interfaces are IPv6 only
- # source interface in global FIB (0)
- # destination interfaces in global and vrf
- vrf_1 = 1
- ipt = VppIpTable(self, vrf_1, is_ip6=True)
- ipt.add_vpp_config()
- self.setup_interfaces(ipv6=[True, True, True],
- ipv6_table_id=[0, 0, vrf_1])
-
- # configure FIB entries
- # a4::/64 is reachable
- # via pg1 in table 0 (global)
- # and via pg2 in table vrf_1
- route0 = VppIpRoute(self, "a4::", 64,
- [VppRoutePath(self.pg1.remote_ip6,
- self.pg1.sw_if_index,
- nh_table_id=0)],
- table_id=0)
- route0.add_vpp_config()
- route1 = VppIpRoute(self, "a4::", 64,
- [VppRoutePath(self.pg2.remote_ip6,
- self.pg2.sw_if_index,
- nh_table_id=vrf_1)],
- table_id=vrf_1)
- route1.add_vpp_config()
- self.logger.debug(self.vapi.cli("show ip6 fib"))
-
- # configure SRv6 localSID End.DT6 behavior
- # Note:
- # fib_table: where the localsid is installed
- # sw_if_index: in T-variants of localsid this is the vrf table_id
- localsid = VppSRv6LocalSID(
- self, localsid='A3::C4',
- behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_DT6,
- nh_addr=0,
- end_psp=0,
- sw_if_index=vrf_1,
- vlan_index=0,
- fib_table=0)
- localsid.add_vpp_config()
- # log the localsids
- self.logger.debug(self.vapi.cli("show sr localsid"))
-
- # create IPv6 packets with SRH (SL=0)
- # send one packet per packet size
- count = len(self.pg_packet_sizes)
- dst_inner = 'a4::1234' # inner header destination address
- pkts = []
-
- # packets with SRH, segments-left 0, active segment a3::c4
- packet_header = self.create_packet_header_IPv6_SRH_IPv6(
- dst_inner,
- sidlist=['a3::c4', 'a2::', 'a1::'],
- segleft=0)
- # add to traffic stream pg0->pg1
- pkts.extend(self.create_stream(self.pg0, self.pg2, packet_header,
- self.pg_packet_sizes, count))
-
- # packets without SRH, IPv6 in IPv6
- # outer IPv6 dest addr is the localsid End.DT6
- packet_header = self.create_packet_header_IPv6_IPv6(
- dst_inner,
- dst_outer='a3::c4')
- # add to traffic stream pg0->pg1
- pkts.extend(self.create_stream(self.pg0, self.pg2, packet_header,
- self.pg_packet_sizes, count))
-
- # send packets and verify received packets
- # using same comparison function as End.DX6
- self.send_and_verify_pkts(self.pg0, pkts, self.pg2,
- self.compare_rx_tx_packet_End_DX6)
-
- # assert nothing was received on the other interface (pg2)
- self.pg1.assert_nothing_captured("mis-directed packet(s)")
-
- # log the localsid counters
- self.logger.info(self.vapi.cli("show sr localsid"))
-
- # remove SRv6 localSIDs
- localsid.remove_vpp_config()
-
- # remove FIB entries
- # done by tearDown
-
- # cleanup interfaces
- self.teardown_interfaces()
-
- def test_SRv6_End_DX4(self):
- """ Test SRv6 End.DX4 behavior.
- """
- # send traffic to one destination interface
- # source interface is IPv6 only
- # destination interface is IPv4 only
- self.setup_interfaces(ipv6=[True, False], ipv4=[False, True])
-
- # configure SRv6 localSID End.DX4 behavior
- localsid = VppSRv6LocalSID(
- self, localsid='A3::C4',
- behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_DX4,
- nh_addr=self.pg1.remote_ip4,
- end_psp=0,
- sw_if_index=self.pg1.sw_if_index,
- vlan_index=0,
- fib_table=0)
- localsid.add_vpp_config()
- # log the localsids
- self.logger.debug(self.vapi.cli("show sr localsid"))
-
- # send one packet per packet size
- count = len(self.pg_packet_sizes)
- dst_inner = '4.1.1.123' # inner header destination address
- pkts = []
-
- # packets with SRH, segments-left 0, active segment a3::c4
- packet_header = self.create_packet_header_IPv6_SRH_IPv4(
- dst_inner,
- sidlist=['a3::c4', 'a2::', 'a1::'],
- segleft=0)
- # add to traffic stream pg0->pg1
- pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
- self.pg_packet_sizes, count))
-
- # packets without SRH, IPv4 in IPv6
- # outer IPv6 dest addr is the localsid End.DX4
- packet_header = self.create_packet_header_IPv6_IPv4(
- dst_inner,
- dst_outer='a3::c4')
- # add to traffic stream pg0->pg1
- pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
- self.pg_packet_sizes, count))
-
- # send packets and verify received packets
- self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
- self.compare_rx_tx_packet_End_DX4)
-
- # log the localsid counters
- self.logger.info(self.vapi.cli("show sr localsid"))
-
- # remove SRv6 localSIDs
- localsid.remove_vpp_config()
-
- # cleanup interfaces
- self.teardown_interfaces()
-
- def test_SRv6_End_DT4(self):
- """ Test SRv6 End.DT4 behavior.
- """
- # create three interfaces (1 source, 2 destinations)
- # source interface is IPv6-only
- # destination interfaces are IPv4 only
- # source interface in global FIB (0)
- # destination interfaces in global and vrf
- vrf_1 = 1
- ipt = VppIpTable(self, vrf_1)
- ipt.add_vpp_config()
- self.setup_interfaces(ipv6=[True, False, False],
- ipv4=[False, True, True],
- ipv6_table_id=[0, 0, 0],
- ipv4_table_id=[0, 0, vrf_1])
-
- # configure FIB entries
- # 4.1.1.0/24 is reachable
- # via pg1 in table 0 (global)
- # and via pg2 in table vrf_1
- route0 = VppIpRoute(self, "4.1.1.0", 24,
- [VppRoutePath(self.pg1.remote_ip4,
- self.pg1.sw_if_index,
- nh_table_id=0)],
- table_id=0)
- route0.add_vpp_config()
- route1 = VppIpRoute(self, "4.1.1.0", 24,
- [VppRoutePath(self.pg2.remote_ip4,
- self.pg2.sw_if_index,
- nh_table_id=vrf_1)],
- table_id=vrf_1)
- route1.add_vpp_config()
- self.logger.debug(self.vapi.cli("show ip fib"))
-
- # configure SRv6 localSID End.DT6 behavior
- # Note:
- # fib_table: where the localsid is installed
- # sw_if_index: in T-variants of localsid: vrf table_id
- localsid = VppSRv6LocalSID(
- self, localsid='A3::C4',
- behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_DT4,
- nh_addr=0,
- end_psp=0,
- sw_if_index=vrf_1,
- vlan_index=0,
- fib_table=0)
- localsid.add_vpp_config()
- # log the localsids
- self.logger.debug(self.vapi.cli("show sr localsid"))
-
- # create IPv6 packets with SRH (SL=0)
- # send one packet per packet size
- count = len(self.pg_packet_sizes)
- dst_inner = '4.1.1.123' # inner header destination address
- pkts = []
-
- # packets with SRH, segments-left 0, active segment a3::c4
- packet_header = self.create_packet_header_IPv6_SRH_IPv4(
- dst_inner,
- sidlist=['a3::c4', 'a2::', 'a1::'],
- segleft=0)
- # add to traffic stream pg0->pg1
- pkts.extend(self.create_stream(self.pg0, self.pg2, packet_header,
- self.pg_packet_sizes, count))
-
- # packets without SRH, IPv6 in IPv6
- # outer IPv6 dest addr is the localsid End.DX4
- packet_header = self.create_packet_header_IPv6_IPv4(
- dst_inner,
- dst_outer='a3::c4')
- # add to traffic stream pg0->pg1
- pkts.extend(self.create_stream(self.pg0, self.pg2, packet_header,
- self.pg_packet_sizes, count))
-
- # send packets and verify received packets
- # using same comparison function as End.DX4
- self.send_and_verify_pkts(self.pg0, pkts, self.pg2,
- self.compare_rx_tx_packet_End_DX4)
-
- # assert nothing was received on the other interface (pg2)
- self.pg1.assert_nothing_captured("mis-directed packet(s)")
-
- # log the localsid counters
- self.logger.info(self.vapi.cli("show sr localsid"))
-
- # remove SRv6 localSIDs
- localsid.remove_vpp_config()
-
- # remove FIB entries
- # done by tearDown
-
- # cleanup interfaces
- self.teardown_interfaces()
-
- def test_SRv6_End_DX2(self):
- """ Test SRv6 End.DX2 behavior.
- """
- # send traffic to one destination interface
- # source interface is IPv6 only
- self.setup_interfaces(ipv6=[True, False], ipv4=[False, False])
-
- # configure SRv6 localSID End.DX2 behavior
- localsid = VppSRv6LocalSID(
- self, localsid='A3::C4',
- behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_DX2,
- nh_addr=0,
- end_psp=0,
- sw_if_index=self.pg1.sw_if_index,
- vlan_index=0,
- fib_table=0)
- localsid.add_vpp_config()
- # log the localsids
- self.logger.debug(self.vapi.cli("show sr localsid"))
-
- # send one packet per packet size
- count = len(self.pg_packet_sizes)
- pkts = []
-
- # packets with SRH, segments-left 0, active segment a3::c4
- # L2 has no dot1q header
- packet_header = self.create_packet_header_IPv6_SRH_L2(
- sidlist=['a3::c4', 'a2::', 'a1::'],
- segleft=0,
- vlan=0)
- # add to traffic stream pg0->pg1
- pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
- self.pg_packet_sizes, count))
-
- # packets with SRH, segments-left 0, active segment a3::c4
- # L2 has dot1q header
- packet_header = self.create_packet_header_IPv6_SRH_L2(
- sidlist=['a3::c4', 'a2::', 'a1::'],
- segleft=0,
- vlan=123)
- # add to traffic stream pg0->pg1
- pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
- self.pg_packet_sizes, count))
-
- # packets without SRH, L2 in IPv6
- # outer IPv6 dest addr is the localsid End.DX2
- # L2 has no dot1q header
- packet_header = self.create_packet_header_IPv6_L2(
- dst_outer='a3::c4',
- vlan=0)
- # add to traffic stream pg0->pg1
- pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
- self.pg_packet_sizes, count))
-
- # packets without SRH, L2 in IPv6
- # outer IPv6 dest addr is the localsid End.DX2
- # L2 has dot1q header
- packet_header = self.create_packet_header_IPv6_L2(
- dst_outer='a3::c4',
- vlan=123)
- # add to traffic stream pg0->pg1
- pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
- self.pg_packet_sizes, count))
-
- # send packets and verify received packets
- self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
- self.compare_rx_tx_packet_End_DX2)
-
- # log the localsid counters
- self.logger.info(self.vapi.cli("show sr localsid"))
-
- # remove SRv6 localSIDs
- localsid.remove_vpp_config()
-
- # cleanup interfaces
- self.teardown_interfaces()
-
- @unittest.skipUnless(0, "PC to fix")
- def test_SRv6_T_Insert_Classifier(self):
- """ Test SRv6 Transit.Insert behavior (IPv6 only).
- steer packets using the classifier
- """
- # send traffic to one destination interface
- # source and destination are IPv6 only
- self.setup_interfaces(ipv6=[False, False, False, True, True])
-
- # configure FIB entries
- route = VppIpRoute(self, "a4::", 64,
- [VppRoutePath(
- self.pg4.remote_ip6,
- self.pg4.sw_if_index)])
- route.add_vpp_config()
-
- # configure encaps IPv6 source address
- # needs to be done before SR Policy config
- # TODO: API?
- self.vapi.cli("set sr encaps source addr a3::")
-
- bsid = 'a3::9999:1'
- # configure SRv6 Policy
- # Note: segment list order: first -> last
- sr_policy = VppSRv6Policy(
- self, bsid=bsid,
- is_encap=0,
- sr_type=SRv6PolicyType.SR_POLICY_TYPE_DEFAULT,
- weight=1, fib_table=0,
- segments=['a4::', 'a5::', 'a6::c7'],
- source='a3::')
- sr_policy.add_vpp_config()
- self.sr_policy = sr_policy
-
- # log the sr policies
- self.logger.info(self.vapi.cli("show sr policies"))
-
- # add classify table
- # mask on dst ip address prefix a7::/8
- mask = '{!s:0<16}'.format('ff')
- r = self.vapi.classify_add_del_table(
- 1,
- binascii.unhexlify(mask),
- match_n_vectors=(len(mask) - 1) // 32 + 1,
- current_data_flag=1,
- skip_n_vectors=2) # data offset
- self.assertIsNotNone(r, 'No response msg for add_del_table')
- table_index = r.new_table_index
-
- # add the source routing node as a ip6 inacl netxt node
- r = self.vapi.add_node_next('ip6-inacl',
- 'sr-pl-rewrite-insert')
- inacl_next_node_index = r.node_index
-
- match = '{!s:0<16}'.format('a7')
- r = self.vapi.classify_add_del_session(
- 1,
- table_index,
- binascii.unhexlify(match),
- hit_next_index=inacl_next_node_index,
- action=3,
- metadata=0) # sr policy index
- self.assertIsNotNone(r, 'No response msg for add_del_session')
-
- # log the classify table used in the steering policy
- self.logger.info(self.vapi.cli("show classify table"))
-
- r = self.vapi.input_acl_set_interface(
- is_add=1,
- sw_if_index=self.pg3.sw_if_index,
- ip6_table_index=table_index)
- self.assertIsNotNone(r,
- 'No response msg for input_acl_set_interface')
-
- # log the ip6 inacl
- self.logger.info(self.vapi.cli("show inacl type ip6"))
-
- # create packets
- count = len(self.pg_packet_sizes)
- dst_inner = 'a7::1234'
- pkts = []
-
- # create IPv6 packets without SRH
- packet_header = self.create_packet_header_IPv6(dst_inner)
- # create traffic stream pg3->pg4
- pkts.extend(self.create_stream(self.pg3, self.pg4, packet_header,
- self.pg_packet_sizes, count))
-
- # create IPv6 packets with SRH
- # packets with segments-left 1, active segment a7::
- packet_header = self.create_packet_header_IPv6_SRH(
- sidlist=['a8::', 'a7::', 'a6::'],
- segleft=1)
- # create traffic stream pg3->pg4
- pkts.extend(self.create_stream(self.pg3, self.pg4, packet_header,
- self.pg_packet_sizes, count))
-
- # send packets and verify received packets
- self.send_and_verify_pkts(self.pg3, pkts, self.pg4,
- self.compare_rx_tx_packet_T_Insert)
-
- # remove the interface l2 input feature
- r = self.vapi.input_acl_set_interface(
- is_add=0,
- sw_if_index=self.pg3.sw_if_index,
- ip6_table_index=table_index)
- self.assertIsNotNone(r,
- 'No response msg for input_acl_set_interface')
-
- # log the ip6 inacl after cleaning
- self.logger.info(self.vapi.cli("show inacl type ip6"))
-
- # log the localsid counters
- self.logger.info(self.vapi.cli("show sr localsid"))
-
- # remove classifier SR steering
- # classifier_steering.remove_vpp_config()
- self.logger.info(self.vapi.cli("show sr steering policies"))
-
- # remove SR Policies
- self.sr_policy.remove_vpp_config()
- self.logger.info(self.vapi.cli("show sr policies"))
-
- # remove classify session and table
- r = self.vapi.classify_add_del_session(
- 0,
- table_index,
- binascii.unhexlify(match))
- self.assertIsNotNone(r, 'No response msg for add_del_session')
-
- r = self.vapi.classify_add_del_table(
- 0,
- binascii.unhexlify(mask),
- table_index=table_index)
- self.assertIsNotNone(r, 'No response msg for add_del_table')
-
- self.logger.info(self.vapi.cli("show classify table"))
-
- # remove FIB entries
- # done by tearDown
-
- # cleanup interfaces
- self.teardown_interfaces()
-
- def compare_rx_tx_packet_T_Encaps(self, tx_pkt, rx_pkt):
- """ Compare input and output packet after passing T.Encaps
-
- :param tx_pkt: transmitted packet
- :param rx_pkt: received packet
- """
- # T.Encaps updates the headers as follows:
- # SR Policy seglist (S3, S2, S1)
- # SR Policy source C
- # IPv6:
- # in: IPv6(A, B2)
- # out: IPv6(C, S1)SRH(S3, S2, S1; SL=2)IPv6(A, B2)
- # IPv6 + SRH:
- # in: IPv6(A, B2)SRH(B3, B2, B1; SL=1)
- # out: IPv6(C, S1)SRH(S3, S2, S1; SL=2)IPv6(a, B2)SRH(B3, B2, B1; SL=1)
-
- # get first (outer) IPv6 header of rx'ed packet
- rx_ip = rx_pkt.getlayer(IPv6)
- rx_srh = None
-
- tx_ip = tx_pkt.getlayer(IPv6)
-
- # expected segment-list
- seglist = self.sr_policy.segments
- # reverse list to get order as in SRH
- tx_seglist = seglist[::-1]
-
- # get source address of SR Policy
- sr_policy_source = self.sr_policy.source
-
- # rx'ed packet should have SRH
- self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
- # get SRH
- rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
-
- # received ip.src should be equal to SR Policy source
- self.assertEqual(rx_ip.src, sr_policy_source)
- # received ip.dst should be equal to expected sidlist[lastentry]
- self.assertEqual(rx_ip.dst, tx_seglist[-1])
- # rx'ed seglist should be equal to expected seglist
- self.assertEqual(rx_srh.addresses, tx_seglist)
- # segleft should be equal to size expected seglist-1
- self.assertEqual(rx_srh.segleft, len(tx_seglist)-1)
- # segleft should be equal to lastentry
- self.assertEqual(rx_srh.segleft, rx_srh.lastentry)
-
- # the whole rx'ed pkt beyond SRH should be equal to tx'ed pkt
- # except for the hop-limit field
- # -> update tx'ed hlim to the expected hlim
- tx_ip.hlim = tx_ip.hlim - 1
-
- self.assertEqual(rx_srh.payload, tx_ip)
-
- self.logger.debug("packet verification: SUCCESS")
-
- def compare_rx_tx_packet_T_Encaps_IPv4(self, tx_pkt, rx_pkt):
- """ Compare input and output packet after passing T.Encaps for IPv4
-
- :param tx_pkt: transmitted packet
- :param rx_pkt: received packet
- """
- # T.Encaps for IPv4 updates the headers as follows:
- # SR Policy seglist (S3, S2, S1)
- # SR Policy source C
- # IPv4:
- # in: IPv4(A, B2)
- # out: IPv6(C, S1)SRH(S3, S2, S1; SL=2)IPv4(A, B2)
-
- # get first (outer) IPv6 header of rx'ed packet
- rx_ip = rx_pkt.getlayer(IPv6)
- rx_srh = None
-
- tx_ip = tx_pkt.getlayer(IP)
-
- # expected segment-list
- seglist = self.sr_policy.segments
- # reverse list to get order as in SRH
- tx_seglist = seglist[::-1]
-
- # get source address of SR Policy
- sr_policy_source = self.sr_policy.source
-
- # checks common to cases tx with and without SRH
- # rx'ed packet should have SRH and IPv4 header
- self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
- self.assertTrue(rx_ip.payload.haslayer(IP))
- # get SRH
- rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
-
- # received ip.src should be equal to SR Policy source
- self.assertEqual(rx_ip.src, sr_policy_source)
- # received ip.dst should be equal to sidlist[lastentry]
- self.assertEqual(rx_ip.dst, tx_seglist[-1])
- # rx'ed seglist should be equal to seglist
- self.assertEqual(rx_srh.addresses, tx_seglist)
- # segleft should be equal to size seglist-1
- self.assertEqual(rx_srh.segleft, len(tx_seglist)-1)
- # segleft should be equal to lastentry
- self.assertEqual(rx_srh.segleft, rx_srh.lastentry)
-
- # the whole rx'ed pkt beyond SRH should be equal to tx'ed pkt
- # except for the ttl field and ip checksum
- # -> 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
- tx_ip = IP(scapy.compat.raw(tx_ip))
-
- self.assertEqual(rx_srh.payload, tx_ip)
-
- self.logger.debug("packet verification: SUCCESS")
-
- def compare_rx_tx_packet_T_Encaps_L2(self, tx_pkt, rx_pkt):
- """ Compare input and output packet after passing T.Encaps for L2
-
- :param tx_pkt: transmitted packet
- :param rx_pkt: received packet
- """
- # T.Encaps for L2 updates the headers as follows:
- # SR Policy seglist (S3, S2, S1)
- # SR Policy source C
- # L2:
- # in: L2
- # out: IPv6(C, S1)SRH(S3, S2, S1; SL=2)L2
-
- # get first (outer) IPv6 header of rx'ed packet
- rx_ip = rx_pkt.getlayer(IPv6)
- rx_srh = None
-
- tx_ether = tx_pkt.getlayer(Ether)
-
- # expected segment-list
- seglist = self.sr_policy.segments
- # reverse list to get order as in SRH
- tx_seglist = seglist[::-1]
-
- # get source address of SR Policy
- sr_policy_source = self.sr_policy.source
-
- # rx'ed packet should have SRH
- self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
- # get SRH
- rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
-
- # received ip.src should be equal to SR Policy source
- self.assertEqual(rx_ip.src, sr_policy_source)
- # received ip.dst should be equal to sidlist[lastentry]
- self.assertEqual(rx_ip.dst, tx_seglist[-1])
- # rx'ed seglist should be equal to seglist
- self.assertEqual(rx_srh.addresses, tx_seglist)
- # segleft should be equal to size seglist-1
- self.assertEqual(rx_srh.segleft, len(tx_seglist)-1)
- # segleft should be equal to lastentry
- self.assertEqual(rx_srh.segleft, rx_srh.lastentry)
- # nh should be "No Next Header" (143)
- self.assertEqual(rx_srh.nh, 143)
-
- # the whole rx'ed pkt beyond SRH should be equal to tx'ed pkt
- self.assertEqual(Ether(scapy.compat.raw(rx_srh.payload)), tx_ether)
-
- self.logger.debug("packet verification: SUCCESS")
-
- def compare_rx_tx_packet_T_Insert(self, tx_pkt, rx_pkt):
- """ Compare input and output packet after passing T.Insert
-
- :param tx_pkt: transmitted packet
- :param rx_pkt: received packet
- """
- # T.Insert updates the headers as follows:
- # IPv6:
- # in: IPv6(A, B2)
- # out: IPv6(A, S1)SRH(B2, S3, S2, S1; SL=3)
- # IPv6 + SRH:
- # in: IPv6(A, B2)SRH(B3, B2, B1; SL=1)
- # out: IPv6(A, S1)SRH(B2, S3, S2, S1; SL=3)SRH(B3, B2, B1; SL=1)
-
- # get first (outer) IPv6 header of rx'ed packet
- rx_ip = rx_pkt.getlayer(IPv6)
- rx_srh = None
- rx_ip2 = None
- rx_srh2 = None
- rx_ip3 = None
- rx_udp = rx_pkt[UDP]
-
- tx_ip = tx_pkt.getlayer(IPv6)
- tx_srh = None
- tx_ip2 = None
- # some packets have been tx'ed with an SRH, some without it
- # get SRH if tx'ed packet has it
- if tx_pkt.haslayer(IPv6ExtHdrSegmentRouting):
- tx_srh = tx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
- tx_ip2 = tx_pkt.getlayer(IPv6, 2)
- tx_udp = tx_pkt[UDP]
-
- # expected segment-list (make copy of SR Policy segment list)
- seglist = self.sr_policy.segments[:]
- # expected seglist has initial dest addr as last segment
- seglist.append(tx_ip.dst)
- # reverse list to get order as in SRH
- tx_seglist = seglist[::-1]
-
- # get source address of SR Policy
- sr_policy_source = self.sr_policy.source
-
- # checks common to cases tx with and without SRH
- # rx'ed packet should have SRH and only one IPv6 header
- self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
- self.assertFalse(rx_ip.payload.haslayer(IPv6))
- # get SRH
- rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
-
- # rx'ed ip.src should be equal to tx'ed ip.src
- self.assertEqual(rx_ip.src, tx_ip.src)
- # rx'ed ip.dst should be equal to sidlist[lastentry]
- self.assertEqual(rx_ip.dst, tx_seglist[-1])
-
- # rx'ed seglist should be equal to expected seglist
- self.assertEqual(rx_srh.addresses, tx_seglist)
- # segleft should be equal to size(expected seglist)-1
- self.assertEqual(rx_srh.segleft, len(tx_seglist)-1)
- # segleft should be equal to lastentry
- self.assertEqual(rx_srh.segleft, rx_srh.lastentry)
-
- if tx_srh: # packet was tx'ed with SRH
- # packet should have 2nd SRH
- self.assertTrue(rx_srh.payload.haslayer(IPv6ExtHdrSegmentRouting))
- # get 2nd SRH
- rx_srh2 = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting, 2)
-
- # rx'ed srh2.addresses should be equal to tx'ed srh.addresses
- self.assertEqual(rx_srh2.addresses, tx_srh.addresses)
- # rx'ed srh2.segleft should be equal to tx'ed srh.segleft
- self.assertEqual(rx_srh2.segleft, tx_srh.segleft)
- # rx'ed srh2.lastentry should be equal to tx'ed srh.lastentry
- self.assertEqual(rx_srh2.lastentry, tx_srh.lastentry)
-
- else: # packet was tx'ed without SRH
- # rx packet should have no other SRH
- self.assertFalse(rx_srh.payload.haslayer(IPv6ExtHdrSegmentRouting))
-
- # UDP layer should be unchanged
- self.assertEqual(rx_udp, tx_udp)
-
- self.logger.debug("packet verification: SUCCESS")
-
- def compare_rx_tx_packet_End(self, tx_pkt, rx_pkt):
- """ Compare input and output packet after passing End (without PSP)
-
- :param tx_pkt: transmitted packet
- :param rx_pkt: received packet
- """
- # End (no PSP) updates the headers as follows:
- # IPv6 + SRH:
- # in: IPv6(A, S1)SRH(S3, S2, S1; SL=2)
- # out: IPv6(A, S2)SRH(S3, S2, S1; SL=1)
-
- # get first (outer) IPv6 header of rx'ed packet
- rx_ip = rx_pkt.getlayer(IPv6)
- rx_srh = None
- rx_ip2 = None
- rx_udp = rx_pkt[UDP]
-
- tx_ip = tx_pkt.getlayer(IPv6)
- # we know the packet has been tx'ed
- # with an inner IPv6 header and an SRH
- tx_ip2 = tx_pkt.getlayer(IPv6, 2)
- tx_srh = tx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
- tx_udp = tx_pkt[UDP]
-
- # common checks, regardless of tx segleft value
- # rx'ed packet should have 2nd IPv6 header
- self.assertTrue(rx_ip.payload.haslayer(IPv6))
- # get second (inner) IPv6 header
- rx_ip2 = rx_pkt.getlayer(IPv6, 2)
-
- if tx_ip.segleft > 0:
- # SRH should NOT have been popped:
- # End SID without PSP does not pop SRH if segleft>0
- self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
- rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
-
- # received ip.src should be equal to expected ip.src
- self.assertEqual(rx_ip.src, tx_ip.src)
- # sidlist should be unchanged
- self.assertEqual(rx_srh.addresses, tx_srh.addresses)
- # segleft should have been decremented
- self.assertEqual(rx_srh.segleft, tx_srh.segleft-1)
- # received ip.dst should be equal to sidlist[segleft]
- self.assertEqual(rx_ip.dst, rx_srh.addresses[rx_srh.segleft])
- # lastentry should be unchanged
- self.assertEqual(rx_srh.lastentry, tx_srh.lastentry)
- # inner IPv6 packet (ip2) should be unchanged
- self.assertEqual(rx_ip2.src, tx_ip2.src)
- self.assertEqual(rx_ip2.dst, tx_ip2.dst)
- # else: # tx_ip.segleft == 0
- # TODO: Does this work with 2 SRHs in ingress packet?
-
- # UDP layer should be unchanged
- self.assertEqual(rx_udp, tx_udp)
-
- self.logger.debug("packet verification: SUCCESS")
-
- def compare_rx_tx_packet_End_PSP(self, tx_pkt, rx_pkt):
- """ Compare input and output packet after passing End with PSP
-
- :param tx_pkt: transmitted packet
- :param rx_pkt: received packet
- """
- # End (PSP) updates the headers as follows:
- # IPv6 + SRH (SL>1):
- # in: IPv6(A, S1)SRH(S3, S2, S1; SL=2)
- # out: IPv6(A, S2)SRH(S3, S2, S1; SL=1)
- # IPv6 + SRH (SL=1):
- # in: IPv6(A, S2)SRH(S3, S2, S1; SL=1)
- # out: IPv6(A, S3)
-
- # get first (outer) IPv6 header of rx'ed packet
- rx_ip = rx_pkt.getlayer(IPv6)
- rx_srh = None
- rx_ip2 = None
- rx_udp = rx_pkt[UDP]
-
- tx_ip = tx_pkt.getlayer(IPv6)
- # we know the packet has been tx'ed
- # with an inner IPv6 header and an SRH
- tx_ip2 = tx_pkt.getlayer(IPv6, 2)
- tx_srh = tx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
- tx_udp = tx_pkt[UDP]
-
- # common checks, regardless of tx segleft value
- self.assertTrue(rx_ip.payload.haslayer(IPv6))
- rx_ip2 = rx_pkt.getlayer(IPv6, 2)
- # inner IPv6 packet (ip2) should be unchanged
- self.assertEqual(rx_ip2.src, tx_ip2.src)
- self.assertEqual(rx_ip2.dst, tx_ip2.dst)
-
- if tx_ip.segleft > 1:
- # SRH should NOT have been popped:
- # End SID with PSP does not pop SRH if segleft>1
- # rx'ed packet should have SRH
- self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
- rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting)
-
- # received ip.src should be equal to expected ip.src
- self.assertEqual(rx_ip.src, tx_ip.src)
- # sidlist should be unchanged
- self.assertEqual(rx_srh.addresses, tx_srh.addresses)
- # segleft should have been decremented
- self.assertEqual(rx_srh.segleft, tx_srh.segleft-1)
- # received ip.dst should be equal to sidlist[segleft]
- self.assertEqual(rx_ip.dst, rx_srh.addresses[rx_srh.segleft])
- # lastentry should be unchanged
- self.assertEqual(rx_srh.lastentry, tx_srh.lastentry)
-
- else: # tx_ip.segleft <= 1
- # SRH should have been popped:
- # End SID with PSP and segleft=1 pops SRH
- # the two IPv6 headers are still present
- # outer IPv6 header has DA == last segment of popped SRH
- # SRH should not be present
- self.assertFalse(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting))
- # outer IPv6 header ip.src should be equal to tx'ed ip.src
- self.assertEqual(rx_ip.src, tx_ip.src)
- # outer IPv6 header ip.dst should be = to tx'ed sidlist[segleft-1]
- self.assertEqual(rx_ip.dst, tx_srh.addresses[tx_srh.segleft-1])
-
- # UDP layer should be unchanged
- self.assertEqual(rx_udp, tx_udp)
-
- self.logger.debug("packet verification: SUCCESS")
-
- def compare_rx_tx_packet_End_DX6(self, tx_pkt, rx_pkt):
- """ Compare input and output packet after passing End.DX6
-
- :param tx_pkt: transmitted packet
- :param rx_pkt: received packet
- """
- # End.DX6 updates the headers as follows:
- # IPv6 + SRH (SL=0):
- # in: IPv6(A, S3)SRH(S3, S2, S1; SL=0)IPv6(B, D)
- # out: IPv6(B, D)
- # IPv6:
- # in: IPv6(A, S3)IPv6(B, D)
- # out: IPv6(B, D)
-
- # 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_DX4(self, tx_pkt, rx_pkt):
- """ Compare input and output packet after passing End.DX4
-
- :param tx_pkt: transmitted packet
- :param rx_pkt: received packet
- """
- # End.DX4 updates the headers as follows:
- # IPv6 + SRH (SL=0):
- # in: IPv6(A, S3)SRH(S3, S2, S1; SL=0)IPv4(B, D)
- # out: IPv4(B, D)
- # IPv6:
- # in: IPv6(A, S3)IPv4(B, D)
- # out: IPv4(B, D)
-
- # 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_DX2(self, tx_pkt, rx_pkt):
- """ Compare input and output packet after passing End.DX2
-
- :param tx_pkt: transmitted packet
- :param rx_pkt: received packet
- """
- # End.DX2 updates the headers as follows:
- # IPv6 + SRH (SL=0):
- # in: IPv6(A, S3)SRH(S3, S2, S1; SL=0)L2
- # out: L2
- # IPv6:
- # in: IPv6(A, S3)L2
- # out: L2
-
- # 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 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,
- expected_count=None):
- """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
- :param expected_count: expected number of captured packets (if
- different than len(pkts))
- """
- # 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(expected_count=expected_count)
-
- # 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, dst):
- """Create packet header: IPv6 header, UDP header
-
- :param dst: IPv6 destination address
-
- IPv6 source address is 1234::1
- UDP source port and destination port are 1234
- """
-
- p = (IPv6(src='1234::1', dst=dst) /
- UDP(sport=1234, dport=1234))
- return p
-
- def create_packet_header_IPv6_SRH(self, sidlist, segleft):
- """Create packet header: IPv6 header with SRH, UDP header
-
- :param list sidlist: segment list
- :param int segleft: segments-left field value
-
- IPv6 destination address is set to sidlist[segleft]
- IPv6 source addresses are 1234::1 and 4321::1
- UDP source port and destination port are 1234
- """
-
- p = (IPv6(src='1234::1', dst=sidlist[segleft]) /
- IPv6ExtHdrSegmentRouting(addresses=sidlist) /
- UDP(sport=1234, dport=1234))
- return p
-
- def create_packet_header_IPv6_SRH_IPv6(self, dst, sidlist, segleft):
- """Create packet header: IPv6 encapsulated in SRv6:
- IPv6 header with SRH, IPv6 header, UDP header
-
- :param ipv6address dst: inner IPv6 destination address
- :param list sidlist: segment list of outer IPv6 SRH
- :param int segleft: segments-left field of outer IPv6 SRH
-
- Outer IPv6 destination address is set to sidlist[segleft]
- IPv6 source addresses are 1234::1 and 4321::1
- UDP source port and destination port are 1234
- """
-
- p = (IPv6(src='1234::1', dst=sidlist[segleft]) /
- IPv6ExtHdrSegmentRouting(addresses=sidlist,
- segleft=segleft, nh=41) /
- IPv6(src='4321::1', dst=dst) /
- UDP(sport=1234, dport=1234))
- return p
-
- def create_packet_header_IPv6_IPv6(self, dst_inner, dst_outer):
- """Create packet header: IPv6 encapsulated in IPv6:
- IPv6 header, IPv6 header, UDP header
-
- :param ipv6address dst_inner: inner IPv6 destination address
- :param ipv6address dst_outer: outer IPv6 destination address
-
- IPv6 source addresses are 1234::1 and 4321::1
- UDP source port and destination port are 1234
- """
-
- p = (IPv6(src='1234::1', dst=dst_outer) /
- IPv6(src='4321::1', dst=dst_inner) /
- UDP(sport=1234, dport=1234))
- return p
-
- def create_packet_header_IPv6_SRH_SRH_IPv6(self, dst, sidlist1, segleft1,
- sidlist2, segleft2):
- """Create packet header: IPv6 encapsulated in SRv6 with 2 SRH:
- IPv6 header with SRH, 2nd SRH, IPv6 header, UDP header
-
- :param ipv6address dst: inner IPv6 destination address
- :param list sidlist1: segment list of outer IPv6 SRH
- :param int segleft1: segments-left field of outer IPv6 SRH
- :param list sidlist2: segment list of inner IPv6 SRH
- :param int segleft2: segments-left field of inner IPv6 SRH
-
- Outer IPv6 destination address is set to sidlist[segleft]
- IPv6 source addresses are 1234::1 and 4321::1
- UDP source port and destination port are 1234
- """
-
- p = (IPv6(src='1234::1', dst=sidlist1[segleft1]) /
- IPv6ExtHdrSegmentRouting(addresses=sidlist1,
- segleft=segleft1, nh=43) /
- IPv6ExtHdrSegmentRouting(addresses=sidlist2,
- segleft=segleft2, nh=41) /
- IPv6(src='4321::1', dst=dst) /
- UDP(sport=1234, dport=1234))
- return p
-
- def create_packet_header_IPv4(self, dst):
- """Create packet header: IPv4 header, UDP header
-
- :param dst: IPv4 destination address
-
- IPv4 source address is 123.1.1.1
- UDP source port and destination port are 1234
- """
-
- p = (IP(src='123.1.1.1', dst=dst) /
- UDP(sport=1234, dport=1234))
- return p
-
- def create_packet_header_IPv6_IPv4(self, dst_inner, dst_outer):
- """Create packet header: IPv4 encapsulated in IPv6:
- IPv6 header, IPv4 header, UDP header
-
- :param ipv4address dst_inner: inner IPv4 destination address
- :param ipv6address dst_outer: outer IPv6 destination address
-
- IPv6 source address is 1234::1
- IPv4 source address is 123.1.1.1
- UDP source port and destination port are 1234
- """
-
- p = (IPv6(src='1234::1', dst=dst_outer) /
- IP(src='123.1.1.1', dst=dst_inner) /
- UDP(sport=1234, dport=1234))
- return p
-
- def create_packet_header_IPv6_SRH_IPv4(self, dst, sidlist, segleft):
- """Create packet header: IPv4 encapsulated in SRv6:
- IPv6 header with SRH, IPv4 header, UDP header
-
- :param ipv4address dst: inner IPv4 destination address
- :param list sidlist: segment list of outer IPv6 SRH
- :param int segleft: segments-left field of outer IPv6 SRH
-
- Outer IPv6 destination address is set to sidlist[segleft]
- IPv6 source address is 1234::1
- IPv4 source address is 123.1.1.1
- UDP source port and destination port are 1234
- """
-
- p = (IPv6(src='1234::1', dst=sidlist[segleft]) /
- IPv6ExtHdrSegmentRouting(addresses=sidlist,
- segleft=segleft, nh=4) /
- IP(src='123.1.1.1', dst=dst) /
- 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, sidlist, segleft, vlan=0):
- """Create packet header: L2 encapsulated in SRv6:
- IPv6 header with SRH, L2
-
- :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
-
- Outer IPv6 destination address is set to sidlist[segleft]
- IPv6 source address is 1234::1
- """
- 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='1234::1', dst=sidlist[segleft]) /
- IPv6ExtHdrSegmentRouting(addresses=sidlist,
- segleft=segleft, nh=143) /
- eth)
- return p
-
- def create_packet_header_IPv6_L2(self, dst_outer, vlan=0):
- """Create packet header: L2 encapsulated in IPv6:
- IPv6 header, L2
-
- :param ipv6address dst_outer: outer IPv6 destination address
- :param vlan: L2 vlan; if vlan!=0 then add 802.1q header
- """
- 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='1234::1', dst=dst_outer, 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.r(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
-
- # FIXME: there is no need to check manually that all the packets
- # arrived (already done so by get_capture); checking here
- # prevents testing packets that are expected to be dropped, so
- # commenting this out for now
-
- # 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)
Code Review / vpp.git / blobdiff