diff options
Diffstat (limited to 'test/test_srv6.py')
| -rw-r--r-- | test/test_srv6.py | 2141 |
1 files changed, 0 insertions, 2141 deletions
diff --git a/test/test_srv6.py b/test/test_srv6.py deleted file mode 100644 index b3e69724028..00000000000 --- a/test/test_srv6.py +++ /dev/null @@ -1,2141 +0,0 @@ -#!/usr/bin/env python - -import unittest -import binascii -from socket import AF_INET6 - -from framework import VppTestCase, VppTestRunner -from vpp_ip_route import VppIpRoute, VppRoutePath, FibPathProto, VppIpTable -from vpp_srv6 import SRv6LocalSIDBehaviors, VppSRv6LocalSID, VppSRv6Policy, \ - SRv6PolicyType, VppSRv6Steering, SRv6PolicySteeringTypes - -import scapy.compat -from scapy.packet import Raw -from scapy.layers.l2 import Ether, Dot1Q -from scapy.layers.inet6 import IPv6, UDP, IPv6ExtHdrSegmentRouting -from scapy.layers.inet import IP, UDP - -from scapy.utils import inet_pton, inet_ntop - -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 ip arp")) - self.logger.debug(self.vapi.cli("show interface")) - self.logger.debug(self.vapi.cli("show hardware")) - - return self.pg_interfaces - - def teardown_interfaces(self): - """ Unconfigure and bring down interface. - """ - self.logger.debug("Tearing down interfaces") - # tear down all interfaces - # AFAIK they cannot be deleted - for i in self.pg_interfaces: - self.logger.debug("Tear down interface %s" % (i.name)) - i.admin_down() - i.unconfig() - i.set_table_ip4(0) - i.set_table_ip6(0) - - @unittest.skipUnless(0, "PC to fix") - def test_SRv6_T_Encaps(self): - """ Test SRv6 Transit.Encaps behavior for IPv6. - """ - # send traffic to one destination interface - # source and destination are IPv6 only - self.setup_interfaces(ipv6=[True, True]) - - # configure FIB entries - route = VppIpRoute(self, "a4::", 64, - [VppRoutePath(self.pg1.remote_ip6, - self.pg1.sw_if_index)]) - route.add_vpp_config() - - # configure encaps IPv6 source address - # needs to be done before SR Policy config - # TODO: API? - self.vapi.cli("set sr encaps source addr a3::") - - bsid = 'a3::9999:1' - # configure SRv6 Policy - # Note: segment list order: first -> last - sr_policy = VppSRv6Policy( - self, bsid=bsid, - is_encap=1, - sr_type=SRv6PolicyType.SR_POLICY_TYPE_DEFAULT, - weight=1, fib_table=0, - segments=['a4::', 'a5::', 'a6::c7'], - source='a3::') - sr_policy.add_vpp_config() - self.sr_policy = sr_policy - - # log the sr policies - self.logger.info(self.vapi.cli("show sr policies")) - - # steer IPv6 traffic to a7::/64 into SRv6 Policy - # use the bsid of the above self.sr_policy - pol_steering = VppSRv6Steering( - self, - bsid=self.sr_policy.bsid, - prefix="a7::", mask_width=64, - traffic_type=SRv6PolicySteeringTypes.SR_STEER_IPV6, - sr_policy_index=0, table_id=0, - sw_if_index=0) - pol_steering.add_vpp_config() - - # log the sr steering policies - self.logger.info(self.vapi.cli("show sr steering policies")) - - # create packets - count = len(self.pg_packet_sizes) - dst_inner = 'a7::1234' - pkts = [] - - # create IPv6 packets without SRH - packet_header = self.create_packet_header_IPv6(dst_inner) - # create traffic stream pg0->pg1 - pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header, - self.pg_packet_sizes, count)) - - # create IPv6 packets with SRH - # packets with segments-left 1, active segment a7:: - packet_header = self.create_packet_header_IPv6_SRH( - sidlist=['a8::', 'a7::', 'a6::'], - segleft=1) - # create traffic stream pg0->pg1 - pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header, - self.pg_packet_sizes, count)) - - # create IPv6 packets with SRH and IPv6 - # packets with segments-left 1, active segment a7:: - packet_header = self.create_packet_header_IPv6_SRH_IPv6( - dst_inner, - sidlist=['a8::', 'a7::', 'a6::'], - segleft=1) - # create traffic stream pg0->pg1 - pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header, - self.pg_packet_sizes, count)) - - # send packets and verify received packets - self.send_and_verify_pkts(self.pg0, pkts, self.pg1, - self.compare_rx_tx_packet_T_Encaps) - - # log the localsid counters - self.logger.info(self.vapi.cli("show sr localsid")) - - # remove SR steering - pol_steering.remove_vpp_config() - self.logger.info(self.vapi.cli("show sr steering policies")) - - # remove SR Policies - self.sr_policy.remove_vpp_config() - self.logger.info(self.vapi.cli("show sr policies")) - - # remove FIB entries - # done by tearDown - - # cleanup interfaces - self.teardown_interfaces() - - @unittest.skipUnless(0, "PC to fix") - def test_SRv6_T_Insert(self): - """ Test SRv6 Transit.Insert behavior (IPv6 only). - """ - # send traffic to one destination interface - # source and destination are IPv6 only - self.setup_interfaces(ipv6=[True, True]) - - # configure FIB entries - route = VppIpRoute(self, "a4::", 64, - [VppRoutePath(self.pg1.remote_ip6, - self.pg1.sw_if_index)]) - route.add_vpp_config() - - # configure encaps IPv6 source address - # needs to be done before SR Policy config - # TODO: API? - self.vapi.cli("set sr encaps source addr a3::") - - bsid = 'a3::9999:1' - # configure SRv6 Policy - # Note: segment list order: first -> last - sr_policy = VppSRv6Policy( - self, bsid=bsid, - is_encap=0, - sr_type=SRv6PolicyType.SR_POLICY_TYPE_DEFAULT, - weight=1, fib_table=0, - segments=['a4::', 'a5::', 'a6::c7'], - source='a3::') - sr_policy.add_vpp_config() - self.sr_policy = sr_policy - - # log the sr policies - self.logger.info(self.vapi.cli("show sr policies")) - - # steer IPv6 traffic to a7::/64 into SRv6 Policy - # use the bsid of the above self.sr_policy - pol_steering = VppSRv6Steering( - self, - bsid=self.sr_policy.bsid, - prefix="a7::", mask_width=64, - traffic_type=SRv6PolicySteeringTypes.SR_STEER_IPV6, - sr_policy_index=0, table_id=0, - sw_if_index=0) - pol_steering.add_vpp_config() - - # log the sr steering policies - self.logger.info(self.vapi.cli("show sr steering policies")) - - # create packets - count = len(self.pg_packet_sizes) - dst_inner = 'a7::1234' - pkts = [] - - # create IPv6 packets without SRH - packet_header = self.create_packet_header_IPv6(dst_inner) - # create traffic stream pg0->pg1 - pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header, - self.pg_packet_sizes, count)) - - # create IPv6 packets with SRH - # packets with segments-left 1, active segment a7:: - packet_header = self.create_packet_header_IPv6_SRH( - sidlist=['a8::', 'a7::', 'a6::'], - segleft=1) - # create traffic stream pg0->pg1 - pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header, - self.pg_packet_sizes, count)) - - # send packets and verify received packets - self.send_and_verify_pkts(self.pg0, pkts, self.pg1, - self.compare_rx_tx_packet_T_Insert) - - # log the localsid counters - self.logger.info(self.vapi.cli("show sr localsid")) - - # remove SR steering - pol_steering.remove_vpp_config() - self.logger.info(self.vapi.cli("show sr steering policies")) - - # remove SR Policies - self.sr_policy.remove_vpp_config() - self.logger.info(self.vapi.cli("show sr policies")) - - # remove FIB entries - # done by tearDown - - # cleanup interfaces - self.teardown_interfaces() - - @unittest.skipUnless(0, "PC to fix") - def test_SRv6_T_Encaps_IPv4(self): - """ Test SRv6 Transit.Encaps behavior for IPv4. - """ - # send traffic to one destination interface - # source interface is IPv4 only - # destination interface is IPv6 only - self.setup_interfaces(ipv6=[False, True], ipv4=[True, False]) - - # configure FIB entries - route = VppIpRoute(self, "a4::", 64, - [VppRoutePath(self.pg1.remote_ip6, - self.pg1.sw_if_index)]) - route.add_vpp_config() - - # configure encaps IPv6 source address - # needs to be done before SR Policy config - # TODO: API? - self.vapi.cli("set sr encaps source addr a3::") - - bsid = 'a3::9999:1' - # configure SRv6 Policy - # Note: segment list order: first -> last - sr_policy = VppSRv6Policy( - self, bsid=bsid, - is_encap=1, - sr_type=SRv6PolicyType.SR_POLICY_TYPE_DEFAULT, - weight=1, fib_table=0, - segments=['a4::', 'a5::', 'a6::c7'], - source='a3::') - sr_policy.add_vpp_config() - self.sr_policy = sr_policy - - # log the sr policies - self.logger.info(self.vapi.cli("show sr policies")) - - # steer IPv4 traffic to 7.1.1.0/24 into SRv6 Policy - # use the bsid of the above self.sr_policy - pol_steering = VppSRv6Steering( - self, - bsid=self.sr_policy.bsid, - prefix="7.1.1.0", mask_width=24, - traffic_type=SRv6PolicySteeringTypes.SR_STEER_IPV4, - sr_policy_index=0, table_id=0, - sw_if_index=0) - pol_steering.add_vpp_config() - - # log the sr steering policies - self.logger.info(self.vapi.cli("show sr steering policies")) - - # create packets - count = len(self.pg_packet_sizes) - dst_inner = '7.1.1.123' - pkts = [] - - # create IPv4 packets - packet_header = self.create_packet_header_IPv4(dst_inner) - # create traffic stream pg0->pg1 - pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header, - self.pg_packet_sizes, count)) - - # send packets and verify received packets - self.send_and_verify_pkts(self.pg0, pkts, self.pg1, - self.compare_rx_tx_packet_T_Encaps_IPv4) - - # log the localsid counters - self.logger.info(self.vapi.cli("show sr localsid")) - - # remove SR steering - pol_steering.remove_vpp_config() - self.logger.info(self.vapi.cli("show sr steering policies")) - - # remove SR Policies - self.sr_policy.remove_vpp_config() - self.logger.info(self.vapi.cli("show sr policies")) - - # remove FIB entries - # done by tearDown - - # cleanup interfaces - self.teardown_interfaces() - - @unittest.skip("VPP crashes after running this test") - def test_SRv6_T_Encaps_L2(self): - """ Test SRv6 Transit.Encaps behavior for L2. - """ - # send traffic to one destination interface - # source interface is IPv4 only TODO? - # destination interface is IPv6 only - self.setup_interfaces(ipv6=[False, True], ipv4=[False, False]) - - # configure FIB entries - route = VppIpRoute(self, "a4::", 64, - [VppRoutePath(self.pg1.remote_ip6, - self.pg1.sw_if_index)]) - route.add_vpp_config() - - # configure encaps IPv6 source address - # needs to be done before SR Policy config - # TODO: API? - self.vapi.cli("set sr encaps source addr a3::") - - bsid = 'a3::9999:1' - # configure SRv6 Policy - # Note: segment list order: first -> last - sr_policy = VppSRv6Policy( - self, bsid=bsid, - is_encap=1, - sr_type=SRv6PolicyType.SR_POLICY_TYPE_DEFAULT, - weight=1, fib_table=0, - segments=['a4::', 'a5::', 'a6::c7'], - source='a3::') - sr_policy.add_vpp_config() - self.sr_policy = sr_policy - - # log the sr policies - self.logger.info(self.vapi.cli("show sr policies")) - - # steer L2 traffic into SRv6 Policy - # use the bsid of the above self.sr_policy - pol_steering = VppSRv6Steering( - self, - bsid=self.sr_policy.bsid, - prefix="::", mask_width=0, - traffic_type=SRv6PolicySteeringTypes.SR_STEER_L2, - sr_policy_index=0, table_id=0, - sw_if_index=self.pg0.sw_if_index) - pol_steering.add_vpp_config() - - # log the sr steering policies - self.logger.info(self.vapi.cli("show sr steering policies")) - - # create packets - count = len(self.pg_packet_sizes) - pkts = [] - - # create L2 packets without dot1q header - packet_header = self.create_packet_header_L2() - # create traffic stream pg0->pg1 - pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header, - self.pg_packet_sizes, count)) - - # create L2 packets with dot1q header - packet_header = self.create_packet_header_L2(vlan=123) - # create traffic stream pg0->pg1 - pkts.extend(self.create_stream(self.pg0, self.pg1, packet_header, - self.pg_packet_sizes, count)) - - # send packets and verify received packets - self.send_and_verify_pkts(self.pg0, pkts, self.pg1, - self.compare_rx_tx_packet_T_Encaps_L2) - - # log the localsid counters - self.logger.info(self.vapi.cli("show sr localsid")) - - # remove SR steering - pol_steering.remove_vpp_config() - self.logger.info(self.vapi.cli("show sr steering policies")) - - # remove SR Policies - self.sr_policy.remove_vpp_config() - self.logger.info(self.vapi.cli("show sr policies")) - - # remove FIB entries - # done by tearDown - - # cleanup interfaces - self.teardown_interfaces() - - def test_SRv6_End(self): - """ Test SRv6 End (without PSP) behavior. - """ - # send traffic to one destination interface - # source and destination interfaces are IPv6 only - self.setup_interfaces(ipv6=[True, True]) - - # configure FIB entries - route = VppIpRoute(self, "a4::", 64, - [VppRoutePath(self.pg1.remote_ip6, - self.pg1.sw_if_index)]) - route.add_vpp_config() - - # configure SRv6 localSID End without PSP behavior - localsid = VppSRv6LocalSID( - self, localsid={'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)]) - 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), - 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={'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), - 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={'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, - 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={'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) - 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={'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)]) - 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" (59) - self.assertEqual(rx_srh.nh, 59) - - # 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): - """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(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 - - # 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) |