661f91fe0a
Change-Id: I7d2597f2a9589f2463e213da6ca67b1b7593095e Signed-off-by: Paul Vinciguerra <pvinci@vinciconsulting.com>
2161 lines
82 KiB
Python
2161 lines
82 KiB
Python
#!/usr/bin/env python
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import unittest
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import binascii
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from socket import AF_INET6
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from framework import VppTestCase, VppTestRunner
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from vpp_ip_route import VppIpRoute, VppRoutePath, DpoProto, VppIpTable
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from vpp_srv6 import SRv6LocalSIDBehaviors, VppSRv6LocalSID, VppSRv6Policy, \
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SRv6PolicyType, VppSRv6Steering, SRv6PolicySteeringTypes
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from scapy.packet import Raw
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from scapy.layers.l2 import Ether, Dot1Q
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from scapy.layers.inet6 import IPv6, UDP, IPv6ExtHdrSegmentRouting
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from scapy.layers.inet import IP, UDP
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from scapy.utils import inet_pton, inet_ntop
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from util import ppp
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class TestSRv6(VppTestCase):
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""" SRv6 Test Case """
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@classmethod
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def setUpClass(self):
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super(TestSRv6, self).setUpClass()
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def setUp(self):
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""" Perform test setup before each test case.
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"""
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super(TestSRv6, self).setUp()
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# packet sizes, inclusive L2 overhead
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self.pg_packet_sizes = [64, 512, 1518, 9018]
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# reset packet_infos
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self.reset_packet_infos()
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def tearDown(self):
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""" Clean up test setup after each test case.
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"""
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self.teardown_interfaces()
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super(TestSRv6, self).tearDown()
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def configure_interface(self,
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interface,
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ipv6=False, ipv4=False,
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ipv6_table_id=0, ipv4_table_id=0):
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""" Configure interface.
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:param ipv6: configure IPv6 on interface
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:param ipv4: configure IPv4 on interface
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:param ipv6_table_id: FIB table_id for IPv6
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:param ipv4_table_id: FIB table_id for IPv4
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"""
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self.logger.debug("Configuring interface %s" % (interface.name))
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if ipv6:
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self.logger.debug("Configuring IPv6")
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interface.set_table_ip6(ipv6_table_id)
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interface.config_ip6()
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interface.resolve_ndp(timeout=5)
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if ipv4:
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self.logger.debug("Configuring IPv4")
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interface.set_table_ip4(ipv4_table_id)
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interface.config_ip4()
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interface.resolve_arp()
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interface.admin_up()
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def setup_interfaces(self, ipv6=[], ipv4=[],
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ipv6_table_id=[], ipv4_table_id=[]):
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""" Create and configure interfaces.
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:param ipv6: list of interface IPv6 capabilities
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:param ipv4: list of interface IPv4 capabilities
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:param ipv6_table_id: list of intf IPv6 FIB table_ids
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:param ipv4_table_id: list of intf IPv4 FIB table_ids
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:returns: List of created interfaces.
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"""
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# how many interfaces?
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if len(ipv6):
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count = len(ipv6)
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else:
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count = len(ipv4)
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self.logger.debug("Creating and configuring %d interfaces" % (count))
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# fill up ipv6 and ipv4 lists if needed
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# not enabled (False) is the default
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if len(ipv6) < count:
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ipv6 += (count - len(ipv6)) * [False]
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if len(ipv4) < count:
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ipv4 += (count - len(ipv4)) * [False]
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# fill up table_id lists if needed
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# table_id 0 (global) is the default
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if len(ipv6_table_id) < count:
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ipv6_table_id += (count - len(ipv6_table_id)) * [0]
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if len(ipv4_table_id) < count:
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ipv4_table_id += (count - len(ipv4_table_id)) * [0]
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# create 'count' pg interfaces
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self.create_pg_interfaces(range(count))
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# setup all interfaces
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for i in range(count):
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intf = self.pg_interfaces[i]
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self.configure_interface(intf,
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ipv6[i], ipv4[i],
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ipv6_table_id[i], ipv4_table_id[i])
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if any(ipv6):
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self.logger.debug(self.vapi.cli("show ip6 neighbors"))
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if any(ipv4):
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self.logger.debug(self.vapi.cli("show ip arp"))
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self.logger.debug(self.vapi.cli("show interface"))
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self.logger.debug(self.vapi.cli("show hardware"))
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return self.pg_interfaces
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def teardown_interfaces(self):
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""" Unconfigure and bring down interface.
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"""
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self.logger.debug("Tearing down interfaces")
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# tear down all interfaces
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# AFAIK they cannot be deleted
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for i in self.pg_interfaces:
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self.logger.debug("Tear down interface %s" % (i.name))
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i.admin_down()
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i.unconfig()
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i.set_table_ip4(0)
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i.set_table_ip6(0)
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@unittest.skipUnless(0, "PC to fix")
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def test_SRv6_T_Encaps(self):
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""" Test SRv6 Transit.Encaps behavior for IPv6.
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"""
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# send traffic to one destination interface
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# source and destination are IPv6 only
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self.setup_interfaces(ipv6=[True, True])
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# configure FIB entries
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route = VppIpRoute(self, "a4::", 64,
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[VppRoutePath(self.pg1.remote_ip6,
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self.pg1.sw_if_index,
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proto=DpoProto.DPO_PROTO_IP6)],
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is_ip6=1)
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route.add_vpp_config()
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# configure encaps IPv6 source address
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# needs to be done before SR Policy config
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# TODO: API?
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self.vapi.cli("set sr encaps source addr a3::")
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bsid = 'a3::9999:1'
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# configure SRv6 Policy
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# Note: segment list order: first -> last
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sr_policy = VppSRv6Policy(
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self, bsid=bsid,
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is_encap=1,
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sr_type=SRv6PolicyType.SR_POLICY_TYPE_DEFAULT,
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weight=1, fib_table=0,
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segments=['a4::', 'a5::', 'a6::c7'],
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source='a3::')
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sr_policy.add_vpp_config()
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self.sr_policy = sr_policy
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# log the sr policies
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self.logger.info(self.vapi.cli("show sr policies"))
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# steer IPv6 traffic to a7::/64 into SRv6 Policy
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# use the bsid of the above self.sr_policy
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pol_steering = VppSRv6Steering(
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self,
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bsid=self.sr_policy.bsid,
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prefix="a7::", mask_width=64,
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traffic_type=SRv6PolicySteeringTypes.SR_STEER_IPV6,
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sr_policy_index=0, table_id=0,
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sw_if_index=0)
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pol_steering.add_vpp_config()
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# log the sr steering policies
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self.logger.info(self.vapi.cli("show sr steering policies"))
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# create packets
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count = len(self.pg_packet_sizes)
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dst_inner = 'a7::1234'
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pkts = []
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# create IPv6 packets without SRH
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packet_header = self.create_packet_header_IPv6(dst_inner)
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# create traffic stream pg0->pg1
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pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
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self.pg_packet_sizes, count))
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# create IPv6 packets with SRH
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# packets with segments-left 1, active segment a7::
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packet_header = self.create_packet_header_IPv6_SRH(
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sidlist=['a8::', 'a7::', 'a6::'],
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segleft=1)
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# create traffic stream pg0->pg1
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pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
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self.pg_packet_sizes, count))
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# create IPv6 packets with SRH and IPv6
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# packets with segments-left 1, active segment a7::
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packet_header = self.create_packet_header_IPv6_SRH_IPv6(
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dst_inner,
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sidlist=['a8::', 'a7::', 'a6::'],
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segleft=1)
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# create traffic stream pg0->pg1
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pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
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self.pg_packet_sizes, count))
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# send packets and verify received packets
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self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
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self.compare_rx_tx_packet_T_Encaps)
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# log the localsid counters
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self.logger.info(self.vapi.cli("show sr localsid"))
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# remove SR steering
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pol_steering.remove_vpp_config()
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self.logger.info(self.vapi.cli("show sr steering policies"))
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# remove SR Policies
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self.sr_policy.remove_vpp_config()
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self.logger.info(self.vapi.cli("show sr policies"))
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# remove FIB entries
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# done by tearDown
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# cleanup interfaces
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self.teardown_interfaces()
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@unittest.skipUnless(0, "PC to fix")
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def test_SRv6_T_Insert(self):
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""" Test SRv6 Transit.Insert behavior (IPv6 only).
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"""
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# send traffic to one destination interface
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# source and destination are IPv6 only
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self.setup_interfaces(ipv6=[True, True])
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# configure FIB entries
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route = VppIpRoute(self, "a4::", 64,
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[VppRoutePath(self.pg1.remote_ip6,
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self.pg1.sw_if_index,
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proto=DpoProto.DPO_PROTO_IP6)],
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is_ip6=1)
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route.add_vpp_config()
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# configure encaps IPv6 source address
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# needs to be done before SR Policy config
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# TODO: API?
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self.vapi.cli("set sr encaps source addr a3::")
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bsid = 'a3::9999:1'
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# configure SRv6 Policy
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# Note: segment list order: first -> last
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sr_policy = VppSRv6Policy(
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self, bsid=bsid,
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is_encap=0,
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sr_type=SRv6PolicyType.SR_POLICY_TYPE_DEFAULT,
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weight=1, fib_table=0,
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segments=['a4::', 'a5::', 'a6::c7'],
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source='a3::')
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sr_policy.add_vpp_config()
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self.sr_policy = sr_policy
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# log the sr policies
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self.logger.info(self.vapi.cli("show sr policies"))
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# steer IPv6 traffic to a7::/64 into SRv6 Policy
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# use the bsid of the above self.sr_policy
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pol_steering = VppSRv6Steering(
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self,
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bsid=self.sr_policy.bsid,
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prefix="a7::", mask_width=64,
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traffic_type=SRv6PolicySteeringTypes.SR_STEER_IPV6,
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sr_policy_index=0, table_id=0,
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sw_if_index=0)
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pol_steering.add_vpp_config()
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# log the sr steering policies
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self.logger.info(self.vapi.cli("show sr steering policies"))
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# create packets
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count = len(self.pg_packet_sizes)
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dst_inner = 'a7::1234'
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pkts = []
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# create IPv6 packets without SRH
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packet_header = self.create_packet_header_IPv6(dst_inner)
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# create traffic stream pg0->pg1
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pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
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self.pg_packet_sizes, count))
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# create IPv6 packets with SRH
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# packets with segments-left 1, active segment a7::
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packet_header = self.create_packet_header_IPv6_SRH(
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sidlist=['a8::', 'a7::', 'a6::'],
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segleft=1)
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# create traffic stream pg0->pg1
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pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
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self.pg_packet_sizes, count))
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# send packets and verify received packets
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self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
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self.compare_rx_tx_packet_T_Insert)
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# log the localsid counters
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self.logger.info(self.vapi.cli("show sr localsid"))
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# remove SR steering
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pol_steering.remove_vpp_config()
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self.logger.info(self.vapi.cli("show sr steering policies"))
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# remove SR Policies
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self.sr_policy.remove_vpp_config()
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self.logger.info(self.vapi.cli("show sr policies"))
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# remove FIB entries
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# done by tearDown
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# cleanup interfaces
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self.teardown_interfaces()
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@unittest.skipUnless(0, "PC to fix")
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def test_SRv6_T_Encaps_IPv4(self):
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""" Test SRv6 Transit.Encaps behavior for IPv4.
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"""
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# send traffic to one destination interface
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# source interface is IPv4 only
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# destination interface is IPv6 only
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self.setup_interfaces(ipv6=[False, True], ipv4=[True, False])
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# configure FIB entries
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route = VppIpRoute(self, "a4::", 64,
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[VppRoutePath(self.pg1.remote_ip6,
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self.pg1.sw_if_index,
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proto=DpoProto.DPO_PROTO_IP6)],
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is_ip6=1)
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route.add_vpp_config()
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# configure encaps IPv6 source address
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# needs to be done before SR Policy config
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# TODO: API?
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self.vapi.cli("set sr encaps source addr a3::")
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bsid = 'a3::9999:1'
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# configure SRv6 Policy
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# Note: segment list order: first -> last
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sr_policy = VppSRv6Policy(
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self, bsid=bsid,
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is_encap=1,
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sr_type=SRv6PolicyType.SR_POLICY_TYPE_DEFAULT,
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weight=1, fib_table=0,
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segments=['a4::', 'a5::', 'a6::c7'],
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source='a3::')
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sr_policy.add_vpp_config()
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self.sr_policy = sr_policy
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# log the sr policies
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self.logger.info(self.vapi.cli("show sr policies"))
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# steer IPv4 traffic to 7.1.1.0/24 into SRv6 Policy
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# use the bsid of the above self.sr_policy
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pol_steering = VppSRv6Steering(
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self,
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bsid=self.sr_policy.bsid,
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prefix="7.1.1.0", mask_width=24,
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traffic_type=SRv6PolicySteeringTypes.SR_STEER_IPV4,
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sr_policy_index=0, table_id=0,
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sw_if_index=0)
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pol_steering.add_vpp_config()
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# log the sr steering policies
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self.logger.info(self.vapi.cli("show sr steering policies"))
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# create packets
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count = len(self.pg_packet_sizes)
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dst_inner = '7.1.1.123'
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pkts = []
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# create IPv4 packets
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packet_header = self.create_packet_header_IPv4(dst_inner)
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# create traffic stream pg0->pg1
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pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
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self.pg_packet_sizes, count))
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# send packets and verify received packets
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self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
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self.compare_rx_tx_packet_T_Encaps_IPv4)
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# log the localsid counters
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self.logger.info(self.vapi.cli("show sr localsid"))
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# remove SR steering
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pol_steering.remove_vpp_config()
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self.logger.info(self.vapi.cli("show sr steering policies"))
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# remove SR Policies
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self.sr_policy.remove_vpp_config()
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self.logger.info(self.vapi.cli("show sr policies"))
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# remove FIB entries
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# done by tearDown
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# cleanup interfaces
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self.teardown_interfaces()
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@unittest.skip("VPP crashes after running this test")
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def test_SRv6_T_Encaps_L2(self):
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""" Test SRv6 Transit.Encaps behavior for L2.
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"""
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# send traffic to one destination interface
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# source interface is IPv4 only TODO?
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# destination interface is IPv6 only
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self.setup_interfaces(ipv6=[False, True], ipv4=[False, False])
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# configure FIB entries
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route = VppIpRoute(self, "a4::", 64,
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[VppRoutePath(self.pg1.remote_ip6,
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self.pg1.sw_if_index,
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proto=DpoProto.DPO_PROTO_IP6)],
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is_ip6=1)
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route.add_vpp_config()
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# configure encaps IPv6 source address
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# needs to be done before SR Policy config
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# TODO: API?
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self.vapi.cli("set sr encaps source addr a3::")
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bsid = 'a3::9999:1'
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# configure SRv6 Policy
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# Note: segment list order: first -> last
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sr_policy = VppSRv6Policy(
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self, bsid=bsid,
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is_encap=1,
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sr_type=SRv6PolicyType.SR_POLICY_TYPE_DEFAULT,
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weight=1, fib_table=0,
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segments=['a4::', 'a5::', 'a6::c7'],
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source='a3::')
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sr_policy.add_vpp_config()
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self.sr_policy = sr_policy
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# log the sr policies
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self.logger.info(self.vapi.cli("show sr policies"))
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# steer L2 traffic into SRv6 Policy
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# use the bsid of the above self.sr_policy
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pol_steering = VppSRv6Steering(
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self,
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bsid=self.sr_policy.bsid,
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prefix="::", mask_width=0,
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traffic_type=SRv6PolicySteeringTypes.SR_STEER_L2,
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sr_policy_index=0, table_id=0,
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sw_if_index=self.pg0.sw_if_index)
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pol_steering.add_vpp_config()
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# log the sr steering policies
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self.logger.info(self.vapi.cli("show sr steering policies"))
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# create packets
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count = len(self.pg_packet_sizes)
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pkts = []
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# create L2 packets without dot1q header
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packet_header = self.create_packet_header_L2()
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# create traffic stream pg0->pg1
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pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header,
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self.pg_packet_sizes, count))
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# create L2 packets with dot1q header
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packet_header = self.create_packet_header_L2(vlan=123)
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# 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,
|
|
proto=DpoProto.DPO_PROTO_IP6)],
|
|
is_ip6=1)
|
|
route.add_vpp_config()
|
|
|
|
# configure SRv6 localSID End without PSP behavior
|
|
localsid = VppSRv6LocalSID(
|
|
self, localsid={'addr': 'A3::0'},
|
|
behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_END,
|
|
nh_addr4='0.0.0.0',
|
|
nh_addr6='::',
|
|
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?)
|
|
|
|
# send packets and verify received packets
|
|
self.send_and_verify_pkts(self.pg0, pkts, self.pg1,
|
|
self.compare_rx_tx_packet_End)
|
|
|
|
# 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,
|
|
proto=DpoProto.DPO_PROTO_IP6)],
|
|
is_ip6=1)
|
|
route.add_vpp_config()
|
|
|
|
# configure SRv6 localSID End with PSP behavior
|
|
localsid = VppSRv6LocalSID(
|
|
self, localsid={'addr': 'A3::0'},
|
|
behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_END,
|
|
nh_addr4='0.0.0.0',
|
|
nh_addr6='::',
|
|
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,
|
|
proto=DpoProto.DPO_PROTO_IP6),
|
|
VppRoutePath(self.pg2.remote_ip6,
|
|
self.pg2.sw_if_index,
|
|
proto=DpoProto.DPO_PROTO_IP6)],
|
|
is_ip6=1)
|
|
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={'addr': 'A3::C4'},
|
|
behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_X,
|
|
nh_addr4='0.0.0.0',
|
|
nh_addr6=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,
|
|
proto=DpoProto.DPO_PROTO_IP6),
|
|
VppRoutePath(self.pg2.remote_ip6,
|
|
self.pg2.sw_if_index,
|
|
proto=DpoProto.DPO_PROTO_IP6)],
|
|
is_ip6=1)
|
|
route.add_vpp_config()
|
|
|
|
# configure SRv6 localSID End with PSP behavior
|
|
localsid = VppSRv6LocalSID(
|
|
self, localsid={'addr': 'A3::C4'},
|
|
behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_X,
|
|
nh_addr4='0.0.0.0',
|
|
nh_addr6=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={'addr': 'A3::C4'},
|
|
behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_DX6,
|
|
nh_addr4='0.0.0.0',
|
|
nh_addr6=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,
|
|
proto=DpoProto.DPO_PROTO_IP6,
|
|
nh_table_id=0)],
|
|
table_id=0,
|
|
is_ip6=1)
|
|
route0.add_vpp_config()
|
|
route1 = VppIpRoute(self, "a4::", 64,
|
|
[VppRoutePath(self.pg2.remote_ip6,
|
|
self.pg2.sw_if_index,
|
|
proto=DpoProto.DPO_PROTO_IP6,
|
|
nh_table_id=vrf_1)],
|
|
table_id=vrf_1,
|
|
is_ip6=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={'addr': 'A3::C4'},
|
|
behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_DT6,
|
|
nh_addr4='0.0.0.0',
|
|
nh_addr6='::',
|
|
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={'addr': 'A3::C4'},
|
|
behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_DX4,
|
|
nh_addr4=self.pg1.remote_ip4,
|
|
nh_addr6='::',
|
|
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,
|
|
is_ip6=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,
|
|
is_ip6=0)
|
|
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={'addr': 'A3::C4'},
|
|
behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_DT4,
|
|
nh_addr4='0.0.0.0',
|
|
nh_addr6='::',
|
|
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={'addr': 'A3::C4'},
|
|
behavior=SRv6LocalSIDBehaviors.SR_BEHAVIOR_DX2,
|
|
nh_addr4='0.0.0.0',
|
|
nh_addr6='::',
|
|
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,
|
|
proto=DpoProto.DPO_PROTO_IP6)],
|
|
is_ip6=1)
|
|
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 = '{: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, msg='No response msg for add_del_table')
|
|
table_index = r.new_table_index
|
|
|
|
# add the source routign 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 = '{: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, msg='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,
|
|
msg='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,
|
|
msg='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, msg='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, msg='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(str(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" (59)
|
|
self.assertEqual(rx_srh.nh, 59)
|
|
|
|
# the whole rx'ed pkt beyond SRH should be equal to tx'ed pkt
|
|
self.assertEqual(Ether(str(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(str(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(str(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(str(p))
|
|
payload_info.data = p.copy()
|
|
self.logger.debug(ppp("Created packet:", p))
|
|
pkts.append(p)
|
|
self.logger.info("Done creating packets")
|
|
return pkts
|
|
|
|
def send_and_verify_pkts(self, input, pkts, output, compare_func):
|
|
"""Send packets and verify received packets using compare_func
|
|
|
|
:param input: ingress interface of DUT
|
|
:param pkts: list of packets to transmit
|
|
:param output: egress interface of DUT
|
|
:param compare_func: function to compare in and out packets
|
|
"""
|
|
# add traffic stream to input interface
|
|
input.add_stream(pkts)
|
|
|
|
# enable capture on all interfaces
|
|
self.pg_enable_capture(self.pg_interfaces)
|
|
|
|
# start traffic
|
|
self.logger.info("Starting traffic")
|
|
self.pg_start()
|
|
|
|
# get output capture
|
|
self.logger.info("Getting packet capture")
|
|
capture = output.get_capture()
|
|
|
|
# assert nothing was captured on input interface
|
|
input.assert_nothing_captured()
|
|
|
|
# verify captured packets
|
|
self.verify_captured_pkts(output, capture, compare_func)
|
|
|
|
def create_packet_header_IPv6(self, 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=59) /
|
|
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=59) / 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(str(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(
|
|
str(Ether(str(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.func_name))
|
|
|
|
last_info = dict()
|
|
for i in self.pg_interfaces:
|
|
last_info[i.sw_if_index] = None
|
|
dst_sw_if_index = dst_if.sw_if_index
|
|
|
|
for packet in capture:
|
|
try:
|
|
# extract payload_info from packet's payload
|
|
payload_info = self.get_payload_info(packet)
|
|
packet_index = payload_info.index
|
|
|
|
self.logger.debug("Verifying packet with index %d"
|
|
% (packet_index))
|
|
# packet should have arrived on the expected interface
|
|
self.assertEqual(payload_info.dst, dst_sw_if_index)
|
|
self.logger.debug(
|
|
"Got packet on interface %s: src=%u (idx=%u)" %
|
|
(dst_if.name, payload_info.src, packet_index))
|
|
|
|
# search for payload_info with same src and dst if_index
|
|
# this will give us the transmitted packet
|
|
next_info = self.get_next_packet_info_for_interface2(
|
|
payload_info.src, dst_sw_if_index,
|
|
last_info[payload_info.src])
|
|
last_info[payload_info.src] = next_info
|
|
# next_info should not be None
|
|
self.assertTrue(next_info is not None)
|
|
# index of tx and rx packets should be equal
|
|
self.assertEqual(packet_index, next_info.index)
|
|
# data field of next_info contains the tx packet
|
|
txed_packet = next_info.data
|
|
|
|
self.logger.debug(ppp("Transmitted packet:",
|
|
txed_packet)) # ppp=Pretty Print Packet
|
|
|
|
self.logger.debug(ppp("Received packet:", packet))
|
|
|
|
# compare rcvd packet with expected packet using compare_func
|
|
compare_func(txed_packet, packet)
|
|
|
|
except:
|
|
self.logger.error(ppp("Unexpected or invalid packet:", packet))
|
|
raise
|
|
|
|
# have all expected packets arrived?
|
|
for i in self.pg_interfaces:
|
|
remaining_packet = self.get_next_packet_info_for_interface2(
|
|
i.sw_if_index, dst_sw_if_index, last_info[i.sw_if_index])
|
|
self.assertTrue(remaining_packet is None,
|
|
"Interface %s: Packet expected from interface %s "
|
|
"didn't arrive" % (dst_if.name, i.name))
|
|
|
|
|
|
if __name__ == '__main__':
|
|
unittest.main(testRunner=VppTestRunner)
|