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Diffstat (limited to 'test/test_srv6_ad.py')
| -rw-r--r-- | test/test_srv6_ad.py | 811 |
1 files changed, 0 insertions, 811 deletions
diff --git a/test/test_srv6_ad.py b/test/test_srv6_ad.py deleted file mode 100644 index aa4b8d3c088..00000000000 --- a/test/test_srv6_ad.py +++ /dev/null @@ -1,811 +0,0 @@ -#!/usr/bin/env python - -import unittest -import binascii -from socket import AF_INET6 - -from framework import VppTestCase, VppTestRunner -from vpp_ip import DpoProto -from vpp_ip_route import VppIpRoute, VppRoutePath, VppIpTable -from vpp_srv6 import SRv6LocalSIDBehaviors, VppSRv6LocalSID, VppSRv6Policy, \ - SRv6PolicyType, VppSRv6Steering, SRv6PolicySteeringTypes - -import scapy.compat -from scapy.packet import Raw -from scapy.layers.l2 import Ether, Dot1Q -from scapy.layers.inet6 import IPv6, UDP, IPv6ExtHdrSegmentRouting -from scapy.layers.inet import IP, UDP - -from scapy.utils import inet_pton, inet_ntop - -from util import ppp - - -class TestSRv6(VppTestCase): - """ SRv6 Dynamic Proxy plugin Test Case """ - - @classmethod - def setUpClass(self): - super(TestSRv6, self).setUpClass() - - @classmethod - def tearDownClass(cls): - super(TestSRv6, cls).tearDownClass() - - def setUp(self): - """ Perform test setup before each test case. - """ - super(TestSRv6, self).setUp() - - # packet sizes, inclusive L2 overhead - self.pg_packet_sizes = [64, 512, 1518, 9018] - - # reset packet_infos - self.reset_packet_infos() - - def tearDown(self): - """ Clean up test setup after each test case. - """ - self.teardown_interfaces() - - super(TestSRv6, self).tearDown() - - def configure_interface(self, - interface, - ipv6=False, ipv4=False, - ipv6_table_id=0, ipv4_table_id=0): - """ Configure interface. - :param ipv6: configure IPv6 on interface - :param ipv4: configure IPv4 on interface - :param ipv6_table_id: FIB table_id for IPv6 - :param ipv4_table_id: FIB table_id for IPv4 - """ - self.logger.debug("Configuring interface %s" % (interface.name)) - if ipv6: - self.logger.debug("Configuring IPv6") - interface.set_table_ip6(ipv6_table_id) - interface.config_ip6() - interface.resolve_ndp(timeout=5) - if ipv4: - self.logger.debug("Configuring IPv4") - interface.set_table_ip4(ipv4_table_id) - interface.config_ip4() - interface.resolve_arp() - interface.admin_up() - - def setup_interfaces(self, ipv6=[], ipv4=[], - ipv6_table_id=[], ipv4_table_id=[]): - """ Create and configure interfaces. - - :param ipv6: list of interface IPv6 capabilities - :param ipv4: list of interface IPv4 capabilities - :param ipv6_table_id: list of intf IPv6 FIB table_ids - :param ipv4_table_id: list of intf IPv4 FIB table_ids - :returns: List of created interfaces. - """ - # how many interfaces? - if len(ipv6): - count = len(ipv6) - else: - count = len(ipv4) - self.logger.debug("Creating and configuring %d interfaces" % (count)) - - # fill up ipv6 and ipv4 lists if needed - # not enabled (False) is the default - if len(ipv6) < count: - ipv6 += (count - len(ipv6)) * [False] - if len(ipv4) < count: - ipv4 += (count - len(ipv4)) * [False] - - # fill up table_id lists if needed - # table_id 0 (global) is the default - if len(ipv6_table_id) < count: - ipv6_table_id += (count - len(ipv6_table_id)) * [0] - if len(ipv4_table_id) < count: - ipv4_table_id += (count - len(ipv4_table_id)) * [0] - - # create 'count' pg interfaces - self.create_pg_interfaces(range(count)) - - # setup all interfaces - for i in range(count): - intf = self.pg_interfaces[i] - self.configure_interface(intf, - ipv6[i], ipv4[i], - ipv6_table_id[i], ipv4_table_id[i]) - - if any(ipv6): - self.logger.debug(self.vapi.cli("show ip6 neighbors")) - if any(ipv4): - self.logger.debug(self.vapi.cli("show 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) - - def test_SRv6_End_AD_IPv6(self): - """ Test SRv6 End.AD behavior with IPv6 traffic. - """ - self.src_addr = 'a0::' - self.sid_list = ['a1::', 'a2::a6', 'a3::'] - self.test_sid_index = 1 - - # send traffic to one destination interface - # source and destination interfaces are IPv6 only - self.setup_interfaces(ipv6=[True, True]) - - # configure route to next segment - route = VppIpRoute(self, self.sid_list[self.test_sid_index + 1], 128, - [VppRoutePath(self.pg0.remote_ip6, - self.pg0.sw_if_index, - proto=DpoProto.DPO_PROTO_IP6)]) - route.add_vpp_config() - - # configure SRv6 localSID behavior - cli_str = "sr localsid address " + \ - self.sid_list[self.test_sid_index] + \ - " behavior end.ad" + \ - " nh " + self.pg1.remote_ip6 + \ - " oif " + self.pg1.name + \ - " iif " + self.pg1.name - self.vapi.cli(cli_str) - - # log the localsids - self.logger.debug(self.vapi.cli("show sr localsid")) - - # send one packet per packet size - count = len(self.pg_packet_sizes) - - # prepare IPv6 in SRv6 headers - packet_header1 = self.create_packet_header_IPv6_SRH_IPv6( - srcaddr=self.src_addr, - sidlist=self.sid_list[::-1], - segleft=len(self.sid_list) - self.test_sid_index - 1) - - # generate packets (pg0->pg1) - pkts1 = self.create_stream(self.pg0, self.pg1, packet_header1, - self.pg_packet_sizes, count) - - # send packets and verify received packets - self.send_and_verify_pkts(self.pg0, pkts1, self.pg1, - self.compare_rx_tx_packet_End_AD_IPv6_out) - - # log the localsid counters - self.logger.info(self.vapi.cli("show sr localsid")) - - # prepare IPv6 header for returning packets - packet_header2 = self.create_packet_header_IPv6() - - # generate returning packets (pg1->pg0) - pkts2 = self.create_stream(self.pg1, self.pg0, packet_header2, - self.pg_packet_sizes, count) - - # send packets and verify received packets - self.send_and_verify_pkts(self.pg1, pkts2, self.pg0, - self.compare_rx_tx_packet_End_AD_IPv6_in) - - # log the localsid counters - self.logger.info(self.vapi.cli("show sr localsid")) - - # remove SRv6 localSIDs - cli_str = "sr localsid del address " + \ - self.sid_list[self.test_sid_index] - self.vapi.cli(cli_str) - - # cleanup interfaces - self.teardown_interfaces() - - def compare_rx_tx_packet_End_AD_IPv6_out(self, tx_pkt, rx_pkt): - """ Compare input and output packet after passing End.AD with IPv6 - - :param tx_pkt: transmitted packet - :param rx_pkt: received packet - """ - - # get first (outer) IPv6 header of rx'ed packet - rx_ip = rx_pkt.getlayer(IPv6) - - tx_ip = tx_pkt.getlayer(IPv6) - tx_ip2 = tx_pkt.getlayer(IPv6, 2) - - # verify if rx'ed packet has no SRH - self.assertFalse(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting)) - - # the whole rx_ip pkt should be equal to tx_ip2 - # except for the hlim field - # -> adjust tx'ed hlim to expected hlim - tx_ip2.hlim = tx_ip2.hlim - 1 - - self.assertEqual(rx_ip, tx_ip2) - - self.logger.debug("packet verification: SUCCESS") - - def compare_rx_tx_packet_End_AD_IPv6_in(self, tx_pkt, rx_pkt): - """ Compare input and output packet after passing End.AD - - :param tx_pkt: transmitted packet - :param rx_pkt: received packet - """ - - # get first (outer) IPv6 header of rx'ed packet - rx_ip = rx_pkt.getlayer(IPv6) - # received ip.src should be equal to SR Policy source - self.assertEqual(rx_ip.src, self.src_addr) - # received ip.dst should be equal to expected sidlist next segment - self.assertEqual(rx_ip.dst, self.sid_list[self.test_sid_index + 1]) - - # rx'ed packet should have SRH - self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting)) - - # get SRH - rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting) - # rx'ed seglist should be equal to SID-list in reversed order - self.assertEqual(rx_srh.addresses, self.sid_list[::-1]) - # segleft should be equal to previous segleft value minus 1 - self.assertEqual(rx_srh.segleft, - len(self.sid_list) - self.test_sid_index - 2) - # lastentry should be equal to the SID-list length minus 1 - self.assertEqual(rx_srh.lastentry, len(self.sid_list) - 1) - - # the whole rx'ed pkt beyond SRH should be equal to tx'ed pkt - # except for the hop-limit field - tx_ip = tx_pkt.getlayer(IPv6) - # -> update tx'ed hlim to the expected hlim - tx_ip.hlim -= 1 - # -> check payload - self.assertEqual(rx_srh.payload, tx_ip) - - self.logger.debug("packet verification: SUCCESS") - - def test_SRv6_End_AD_IPv4(self): - """ Test SRv6 End.AD behavior with IPv4 traffic. - """ - self.src_addr = 'a0::' - self.sid_list = ['a1::', 'a2::a4', 'a3::'] - self.test_sid_index = 1 - - # send traffic to one destination interface - # source and destination interfaces are IPv6 only - self.setup_interfaces(ipv6=[True, False], ipv4=[False, True]) - - # configure route to next segment - route = VppIpRoute(self, self.sid_list[self.test_sid_index + 1], 128, - [VppRoutePath(self.pg0.remote_ip6, - self.pg0.sw_if_index, - proto=DpoProto.DPO_PROTO_IP6)]) - route.add_vpp_config() - - # configure SRv6 localSID behavior - cli_str = "sr localsid address " + \ - self.sid_list[self.test_sid_index] + \ - " behavior end.ad" + \ - " nh " + self.pg1.remote_ip4 + \ - " oif " + self.pg1.name + \ - " iif " + self.pg1.name - self.vapi.cli(cli_str) - - # log the localsids - self.logger.debug(self.vapi.cli("show sr localsid")) - - # send one packet per packet size - count = len(self.pg_packet_sizes) - - # prepare IPv4 in SRv6 headers - packet_header1 = self.create_packet_header_IPv6_SRH_IPv4( - srcaddr=self.src_addr, - sidlist=self.sid_list[::-1], - segleft=len(self.sid_list) - self.test_sid_index - 1) - - # generate packets (pg0->pg1) - pkts1 = self.create_stream(self.pg0, self.pg1, packet_header1, - self.pg_packet_sizes, count) - - # send packets and verify received packets - self.send_and_verify_pkts(self.pg0, pkts1, self.pg1, - self.compare_rx_tx_packet_End_AD_IPv4_out) - - # log the localsid counters - self.logger.info(self.vapi.cli("show sr localsid")) - - # prepare IPv6 header for returning packets - packet_header2 = self.create_packet_header_IPv4() - - # generate returning packets (pg1->pg0) - pkts2 = self.create_stream(self.pg1, self.pg0, packet_header2, - self.pg_packet_sizes, count) - - # send packets and verify received packets - self.send_and_verify_pkts(self.pg1, pkts2, self.pg0, - self.compare_rx_tx_packet_End_AD_IPv4_in) - - # log the localsid counters - self.logger.info(self.vapi.cli("show sr localsid")) - - # remove SRv6 localSIDs - cli_str = "sr localsid del address " + \ - self.sid_list[self.test_sid_index] - self.vapi.cli(cli_str) - - # cleanup interfaces - self.teardown_interfaces() - - def compare_rx_tx_packet_End_AD_IPv4_out(self, tx_pkt, rx_pkt): - """ Compare input and output packet after passing End.AD with IPv4 - - :param tx_pkt: transmitted packet - :param rx_pkt: received packet - """ - - # get IPv4 header of rx'ed packet - rx_ip = rx_pkt.getlayer(IP) - - tx_ip = tx_pkt.getlayer(IPv6) - tx_ip2 = tx_pkt.getlayer(IP) - - # verify if rx'ed packet has no SRH - self.assertFalse(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting)) - - # the whole rx_ip pkt should be equal to tx_ip2 - # except for the ttl field and ip checksum - # -> adjust tx'ed ttl to expected ttl - tx_ip2.ttl = tx_ip2.ttl - 1 - # -> set tx'ed ip checksum to None and let scapy recompute - tx_ip2.chksum = None - # read back the pkt (with str()) to force computing these fields - # probably other ways to accomplish this are possible - tx_ip2 = IP(scapy.compat.raw(tx_ip2)) - - self.assertEqual(rx_ip, tx_ip2) - - self.logger.debug("packet verification: SUCCESS") - - def compare_rx_tx_packet_End_AD_IPv4_in(self, tx_pkt, rx_pkt): - """ Compare input and output packet after passing End.AD - - :param tx_pkt: transmitted packet - :param rx_pkt: received packet - """ - - # get first (outer) IPv6 header of rx'ed packet - rx_ip = rx_pkt.getlayer(IPv6) - # received ip.src should be equal to SR Policy source - self.assertEqual(rx_ip.src, self.src_addr) - # received ip.dst should be equal to expected sidlist next segment - self.assertEqual(rx_ip.dst, self.sid_list[self.test_sid_index + 1]) - - # rx'ed packet should have SRH - self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting)) - - # get SRH - rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting) - # rx'ed seglist should be equal to SID-list in reversed order - self.assertEqual(rx_srh.addresses, self.sid_list[::-1]) - # segleft should be equal to previous segleft value minus 1 - self.assertEqual(rx_srh.segleft, - len(self.sid_list) - self.test_sid_index - 2) - # lastentry should be equal to the SID-list length minus 1 - self.assertEqual(rx_srh.lastentry, len(self.sid_list) - 1) - - # the whole rx'ed pkt beyond SRH should be equal to tx'ed pkt - # except for the ttl field and ip checksum - tx_ip = tx_pkt.getlayer(IP) - # -> adjust tx'ed ttl to expected ttl - tx_ip.ttl = tx_ip.ttl - 1 - # -> set tx'ed ip checksum to None and let scapy recompute - tx_ip.chksum = None - # -> read back the pkt (with str()) to force computing these fields - # probably other ways to accomplish this are possible - self.assertEqual(rx_srh.payload, IP(scapy.compat.raw(tx_ip))) - - self.logger.debug("packet verification: SUCCESS") - - def test_SRv6_End_AD_L2(self): - """ Test SRv6 End.AD behavior with L2 traffic. - """ - self.src_addr = 'a0::' - self.sid_list = ['a1::', 'a2::a4', 'a3::'] - self.test_sid_index = 1 - - # send traffic to one destination interface - # source and destination interfaces are IPv6 only - self.setup_interfaces(ipv6=[True, False]) - - # configure route to next segment - route = VppIpRoute(self, self.sid_list[self.test_sid_index + 1], 128, - [VppRoutePath(self.pg0.remote_ip6, - self.pg0.sw_if_index, - proto=DpoProto.DPO_PROTO_IP6)]) - route.add_vpp_config() - - # configure SRv6 localSID behavior - cli_str = "sr localsid address " + \ - self.sid_list[self.test_sid_index] + \ - " behavior end.ad" + \ - " oif " + self.pg1.name + \ - " iif " + self.pg1.name - self.vapi.cli(cli_str) - - # log the localsids - self.logger.debug(self.vapi.cli("show sr localsid")) - - # send one packet per packet size - count = len(self.pg_packet_sizes) - - # prepare L2 in SRv6 headers - packet_header1 = self.create_packet_header_IPv6_SRH_L2( - srcaddr=self.src_addr, - sidlist=self.sid_list[::-1], - segleft=len(self.sid_list) - self.test_sid_index - 1, - vlan=0) - - # generate packets (pg0->pg1) - pkts1 = self.create_stream(self.pg0, self.pg1, packet_header1, - self.pg_packet_sizes, count) - - # send packets and verify received packets - self.send_and_verify_pkts(self.pg0, pkts1, self.pg1, - self.compare_rx_tx_packet_End_AD_L2_out) - - # log the localsid counters - self.logger.info(self.vapi.cli("show sr localsid")) - - # prepare L2 header for returning packets - packet_header2 = self.create_packet_header_L2() - - # generate returning packets (pg1->pg0) - pkts2 = self.create_stream(self.pg1, self.pg0, packet_header2, - self.pg_packet_sizes, count) - - # send packets and verify received packets - self.send_and_verify_pkts(self.pg1, pkts2, self.pg0, - self.compare_rx_tx_packet_End_AD_L2_in) - - # log the localsid counters - self.logger.info(self.vapi.cli("show sr localsid")) - - # remove SRv6 localSIDs - cli_str = "sr localsid del address " + \ - self.sid_list[self.test_sid_index] - self.vapi.cli(cli_str) - - # cleanup interfaces - self.teardown_interfaces() - - def compare_rx_tx_packet_End_AD_L2_out(self, tx_pkt, rx_pkt): - """ Compare input and output packet after passing End.AD with L2 - - :param tx_pkt: transmitted packet - :param rx_pkt: received packet - """ - - # get IPv4 header of rx'ed packet - rx_eth = rx_pkt.getlayer(Ether) - - tx_ip = tx_pkt.getlayer(IPv6) - # we can't just get the 2nd Ether layer - # get the Raw content and dissect it as Ether - tx_eth1 = Ether(scapy.compat.raw(tx_pkt[Raw])) - - # verify if rx'ed packet has no SRH - self.assertFalse(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting)) - - # the whole rx_eth pkt should be equal to tx_eth1 - self.assertEqual(rx_eth, tx_eth1) - - self.logger.debug("packet verification: SUCCESS") - - def compare_rx_tx_packet_End_AD_L2_in(self, tx_pkt, rx_pkt): - """ Compare input and output packet after passing End.AD - - :param tx_pkt: transmitted packet - :param rx_pkt: received packet - """ - - #### - # get first (outer) IPv6 header of rx'ed packet - rx_ip = rx_pkt.getlayer(IPv6) - # received ip.src should be equal to SR Policy source - self.assertEqual(rx_ip.src, self.src_addr) - # received ip.dst should be equal to expected sidlist next segment - self.assertEqual(rx_ip.dst, self.sid_list[self.test_sid_index + 1]) - - # rx'ed packet should have SRH - self.assertTrue(rx_pkt.haslayer(IPv6ExtHdrSegmentRouting)) - - # get SRH - rx_srh = rx_pkt.getlayer(IPv6ExtHdrSegmentRouting) - # rx'ed seglist should be equal to SID-list in reversed order - self.assertEqual(rx_srh.addresses, self.sid_list[::-1]) - # segleft should be equal to previous segleft value minus 1 - self.assertEqual(rx_srh.segleft, - len(self.sid_list) - self.test_sid_index - 2) - # lastentry should be equal to the SID-list length minus 1 - self.assertEqual(rx_srh.lastentry, len(self.sid_list) - 1) - - # the whole rx'ed pkt beyond SRH should be equal to tx'ed pkt - tx_ether = tx_pkt.getlayer(Ether) - self.assertEqual(Ether(scapy.compat.raw(rx_srh.payload)), tx_ether) - - self.logger.debug("packet verification: SUCCESS") - - def create_stream(self, src_if, dst_if, packet_header, packet_sizes, - count): - """Create SRv6 input packet stream for defined interface. - - :param VppInterface src_if: Interface to create packet stream for - :param VppInterface dst_if: destination interface of packet stream - :param packet_header: Layer3 scapy packet headers, - L2 is added when not provided, - Raw(payload) with packet_info is added - :param list packet_sizes: packet stream pckt sizes,sequentially applied - to packets in stream have - :param int count: number of packets in packet stream - :return: list of packets - """ - self.logger.info("Creating packets") - pkts = [] - for i in range(0, count - 1): - payload_info = self.create_packet_info(src_if, dst_if) - self.logger.debug( - "Creating packet with index %d" % (payload_info.index)) - payload = self.info_to_payload(payload_info) - # add L2 header if not yet provided in packet_header - if packet_header.getlayer(0).name == 'Ethernet': - p = packet_header / Raw(payload) - else: - p = Ether(dst=src_if.local_mac, src=src_if.remote_mac) / \ - packet_header / Raw(payload) - size = packet_sizes[i % len(packet_sizes)] - self.logger.debug("Packet size %d" % (size)) - self.extend_packet(p, size) - # we need to store the packet with the automatic fields computed - # read back the dumped packet (with str()) - # to force computing these fields - # probably other ways are possible - p = Ether(scapy.compat.raw(p)) - payload_info.data = p.copy() - self.logger.debug(ppp("Created packet:", p)) - pkts.append(p) - self.logger.info("Done creating packets") - return pkts - - def send_and_verify_pkts(self, input, pkts, output, compare_func): - """Send packets and verify received packets using compare_func - - :param input: ingress interface of DUT - :param pkts: list of packets to transmit - :param output: egress interface of DUT - :param compare_func: function to compare in and out packets - """ - # add traffic stream to input interface - input.add_stream(pkts) - - # enable capture on all interfaces - self.pg_enable_capture(self.pg_interfaces) - - # start traffic - self.logger.info("Starting traffic") - self.pg_start() - - # get output capture - self.logger.info("Getting packet capture") - capture = output.get_capture() - - # assert nothing was captured on input interface - # input.assert_nothing_captured() - - # verify captured packets - self.verify_captured_pkts(output, capture, compare_func) - - def create_packet_header_IPv6(self): - """Create packet header: IPv6 header, UDP header - - :param dst: IPv6 destination address - - IPv6 source address is 1234::1 - IPv6 destination address is 4321::1 - UDP source port and destination port are 1234 - """ - - p = IPv6(src='1234::1', dst='4321::1') / UDP(sport=1234, dport=1234) - return p - - def create_packet_header_IPv6_SRH_IPv6(self, srcaddr, sidlist, segleft): - """Create packet header: IPv6 encapsulated in SRv6: - IPv6 header with SRH, IPv6 header, UDP header - - :param int srcaddr: outer source address - :param list sidlist: segment list of outer IPv6 SRH - :param int segleft: segments-left field of outer IPv6 SRH - - Outer IPv6 source address is set to srcaddr - Outer IPv6 destination address is set to sidlist[segleft] - Inner IPv6 source addresses is 1234::1 - Inner IPv6 destination address is 4321::1 - UDP source port and destination port are 1234 - """ - - p = IPv6(src=srcaddr, dst=sidlist[segleft]) / \ - IPv6ExtHdrSegmentRouting(addresses=sidlist, - segleft=segleft, nh=41) / \ - IPv6(src='1234::1', dst='4321::1') / \ - UDP(sport=1234, dport=1234) - return p - - def create_packet_header_IPv4(self): - """Create packet header: IPv4 header, UDP header - - :param dst: IPv4 destination address - - IPv4 source address is 123.1.1.1 - IPv4 destination address is 124.1.1.1 - UDP source port and destination port are 1234 - """ - - p = IP(src='123.1.1.1', dst='124.1.1.1') / UDP(sport=1234, dport=1234) - return p - - def create_packet_header_IPv6_SRH_IPv4(self, srcaddr, sidlist, segleft): - """Create packet header: IPv4 encapsulated in SRv6: - IPv6 header with SRH, IPv4 header, UDP header - - :param int srcaddr: outer source address - :param list sidlist: segment list of outer IPv6 SRH - :param int segleft: segments-left field of outer IPv6 SRH - - Outer IPv6 source address is set to srcaddr - Outer IPv6 destination address is set to sidlist[segleft] - Inner IPv4 source address is 123.1.1.1 - Inner IPv4 destination address is 124.1.1.1 - UDP source port and destination port are 1234 - """ - - p = IPv6(src=srcaddr, dst=sidlist[segleft]) / \ - IPv6ExtHdrSegmentRouting(addresses=sidlist, - segleft=segleft, nh=4) / \ - IP(src='123.1.1.1', dst='124.1.1.1') / \ - UDP(sport=1234, dport=1234) - return p - - def create_packet_header_L2(self, vlan=0): - """Create packet header: L2 header - - :param vlan: if vlan!=0 then add 802.1q header - """ - # Note: the dst addr ('00:55:44:33:22:11') is used in - # the compare function compare_rx_tx_packet_T_Encaps_L2 - # to detect presence of L2 in SRH payload - p = Ether(src='00:11:22:33:44:55', dst='00:55:44:33:22:11') - etype = 0x8137 # IPX - if vlan: - # add 802.1q layer - p /= Dot1Q(vlan=vlan, type=etype) - else: - p.type = etype - return p - - def create_packet_header_IPv6_SRH_L2(self, srcaddr, sidlist, segleft, - vlan=0): - """Create packet header: L2 encapsulated in SRv6: - IPv6 header with SRH, L2 - - :param int srcaddr: IPv6 source address - :param list sidlist: segment list of outer IPv6 SRH - :param int segleft: segments-left field of outer IPv6 SRH - :param vlan: L2 vlan; if vlan!=0 then add 802.1q header - - IPv6 source address is set to srcaddr - IPv6 destination address is set to sidlist[segleft] - """ - eth = Ether(src='00:11:22:33:44:55', dst='00:55:44:33:22:11') - etype = 0x8137 # IPX - if vlan: - # add 802.1q layer - eth /= Dot1Q(vlan=vlan, type=etype) - else: - eth.type = etype - - p = IPv6(src=srcaddr, dst=sidlist[segleft]) / \ - IPv6ExtHdrSegmentRouting(addresses=sidlist, - segleft=segleft, nh=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.raw(packet[Raw]))[Raw]) - - return payload_info - - def verify_captured_pkts(self, dst_if, capture, compare_func): - """ - Verify captured packet stream for specified interface. - Compare ingress with egress packets using the specified compare fn - - :param dst_if: egress interface of DUT - :param capture: captured packets - :param compare_func: function to compare in and out packet - """ - self.logger.info("Verifying capture on interface %s using function %s" - % (dst_if.name, compare_func.__name__)) - - last_info = dict() - for i in self.pg_interfaces: - last_info[i.sw_if_index] = None - dst_sw_if_index = dst_if.sw_if_index - - for packet in capture: - try: - # extract payload_info from packet's payload - payload_info = self.get_payload_info(packet) - packet_index = payload_info.index - - self.logger.debug("Verifying packet with index %d" - % (packet_index)) - # packet should have arrived on the expected interface - self.assertEqual(payload_info.dst, dst_sw_if_index) - self.logger.debug( - "Got packet on interface %s: src=%u (idx=%u)" % - (dst_if.name, payload_info.src, packet_index)) - - # search for payload_info with same src and dst if_index - # this will give us the transmitted packet - next_info = self.get_next_packet_info_for_interface2( - payload_info.src, dst_sw_if_index, - last_info[payload_info.src]) - last_info[payload_info.src] = next_info - # next_info should not be None - self.assertTrue(next_info is not None) - # index of tx and rx packets should be equal - self.assertEqual(packet_index, next_info.index) - # data field of next_info contains the tx packet - txed_packet = next_info.data - - self.logger.debug(ppp("Transmitted packet:", - txed_packet)) # ppp=Pretty Print Packet - - self.logger.debug(ppp("Received packet:", packet)) - - # compare rcvd packet with expected packet using compare_func - compare_func(txed_packet, packet) - - except: - self.logger.error(ppp("Unexpected or invalid packet:", packet)) - raise - - # have all expected packets arrived? - for i in self.pg_interfaces: - remaining_packet = self.get_next_packet_info_for_interface2( - i.sw_if_index, dst_sw_if_index, last_info[i.sw_if_index]) - self.assertTrue(remaining_packet is None, - "Interface %s: Packet expected from interface %s " - "didn't arrive" % (dst_if.name, i.name)) - - -if __name__ == '__main__': - unittest.main(testRunner=VppTestRunner) |