c4c205b091
Can to define src ip of outer IPv6 Hdr for each encap policy. Along with that, I decided to develop it as API version V2. This is useful in the SRv6 MUP case. For example, it will be possible to handle multiple UPF destinations. Type: feature Change-Id: I44ff7b54e8868619069621ab53e194e2c7a17435 Signed-off-by: Takeru Hayasaka <hayatake396@gmail.com>
2415 lines
83 KiB
Python
2415 lines
83 KiB
Python
#!/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,
|
|
VppSRv6PolicyV2,
|
|
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()
|
|
|
|
def test_SRv6_T_Encaps_with_v6src(self):
|
|
"""Test SRv6 Transit.Encaps behavior for IPv6 and select multiple src v6addr case."""
|
|
# 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"
|
|
other_src_ip = "b1::"
|
|
# configure SRv6 Policy
|
|
# Note: segment list order: first -> last
|
|
sr_policy = VppSRv6PolicyV2(
|
|
self,
|
|
bsid=bsid,
|
|
is_encap=1,
|
|
sr_type=SRv6PolicyType.SR_POLICY_TYPE_DEFAULT,
|
|
weight=1,
|
|
fib_table=0,
|
|
segments=["a4::", "a5::", "a6::c7"],
|
|
encap_src=other_src_ip,
|
|
source=other_src_ip,
|
|
)
|
|
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(remark="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(remark="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(remark="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(remark="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)
|