X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=test%2Ftest_bfd.py;h=d3616c7e241a052116f82cfad01c4239ac4f5790;hb=4682feb1f;hp=68baf837d4d260cb0473d253afb2bdb3533594fa;hpb=c48829bb0a29e7b53a5e0b6bcecd13a328b19dcf;p=vpp.git diff --git a/test/test_bfd.py b/test/test_bfd.py index 68baf837d4d..d3616c7e241 100644 --- a/test/test_bfd.py +++ b/test/test_bfd.py @@ -2,21 +2,34 @@ """ BFD tests """ from __future__ import division -import unittest -import hashlib + import binascii +import hashlib import time -from random import randint, shuffle -from socket import AF_INET, AF_INET6 -from scapy.packet import Raw -from scapy.layers.l2 import Ether +import unittest +from random import randint, shuffle, getrandbits +from socket import AF_INET, AF_INET6, inet_ntop +from struct import pack, unpack + +from six import moves +import scapy.compat from scapy.layers.inet import UDP, IP from scapy.layers.inet6 import IPv6 +from scapy.layers.l2 import Ether, GRE +from scapy.packet import Raw + from bfd import VppBFDAuthKey, BFD, BFDAuthType, VppBFDUDPSession, \ - BFDDiagCode, BFDState -from framework import VppTestCase, VppTestRunner -from vpp_pg_interface import CaptureTimeoutError + BFDDiagCode, BFDState, BFD_vpp_echo +from framework import VppTestCase, VppTestRunner, running_extended_tests from util import ppp +from vpp_ip import DpoProto +from vpp_ip_route import VppIpRoute, VppRoutePath +from vpp_lo_interface import VppLoInterface +from vpp_papi_provider import UnexpectedApiReturnValueError, \ + CliFailedCommandError +from vpp_pg_interface import CaptureTimeoutError, is_ipv6_misc +from vpp_gre_interface import VppGreInterface +from vpp_papi import VppEnum USEC_IN_SEC = 1000000 @@ -33,11 +46,13 @@ class AuthKeyFactory(object): while conf_key_id in self._conf_key_ids: conf_key_id = randint(0, 0xFFFFFFFF) self._conf_key_ids[conf_key_id] = 1 - key = str(bytearray([randint(0, 255) for _ in range(randint(1, 20))])) + key = scapy.compat.raw( + bytearray([randint(0, 255) for _ in range(randint(1, 20))])) return VppBFDAuthKey(test=test, auth_type=auth_type, conf_key_id=conf_key_id, key=key) +@unittest.skipUnless(running_extended_tests, "part of extended tests") class BFDAPITestCase(VppTestCase): """Bidirectional Forwarding Detection (BFD) - API""" @@ -47,7 +62,7 @@ class BFDAPITestCase(VppTestCase): @classmethod def setUpClass(cls): super(BFDAPITestCase, cls).setUpClass() - + cls.vapi.cli("set log class bfd level debug") try: cls.create_pg_interfaces(range(2)) for i in cls.pg_interfaces: @@ -59,6 +74,10 @@ class BFDAPITestCase(VppTestCase): super(BFDAPITestCase, cls).tearDownClass() raise + @classmethod + def tearDownClass(cls): + super(BFDAPITestCase, cls).tearDownClass() + def setUp(self): super(BFDAPITestCase, self).setUp() self.factory = AuthKeyFactory() @@ -78,7 +97,7 @@ class BFDAPITestCase(VppTestCase): session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4) session.add_vpp_config() - with self.vapi.expect_negative_api_retval(): + with self.vapi.assert_negative_api_retval(): session.add_vpp_config() session.remove_vpp_config() @@ -246,17 +265,68 @@ class BFDAPITestCase(VppTestCase): session.add_vpp_config() session.activate_auth(key2) + def test_set_del_udp_echo_source(self): + """ set/del udp echo source """ + self.create_loopback_interfaces(1) + self.loopback0 = self.lo_interfaces[0] + self.loopback0.admin_up() + echo_source = self.vapi.bfd_udp_get_echo_source() + self.assertFalse(echo_source.is_set) + self.assertFalse(echo_source.have_usable_ip4) + self.assertFalse(echo_source.have_usable_ip6) + + self.vapi.bfd_udp_set_echo_source( + sw_if_index=self.loopback0.sw_if_index) + echo_source = self.vapi.bfd_udp_get_echo_source() + self.assertTrue(echo_source.is_set) + self.assertEqual(echo_source.sw_if_index, self.loopback0.sw_if_index) + self.assertFalse(echo_source.have_usable_ip4) + self.assertFalse(echo_source.have_usable_ip6) + + self.loopback0.config_ip4() + unpacked = unpack("!L", self.loopback0.local_ip4n) + echo_ip4 = pack("!L", unpacked[0] ^ 1) + echo_source = self.vapi.bfd_udp_get_echo_source() + self.assertTrue(echo_source.is_set) + self.assertEqual(echo_source.sw_if_index, self.loopback0.sw_if_index) + self.assertTrue(echo_source.have_usable_ip4) + self.assertEqual(echo_source.ip4_addr.packed, echo_ip4) + self.assertFalse(echo_source.have_usable_ip6) + + self.loopback0.config_ip6() + unpacked = unpack("!LLLL", self.loopback0.local_ip6n) + echo_ip6 = pack("!LLLL", unpacked[0], unpacked[1], unpacked[2], + unpacked[3] ^ 1) + echo_source = self.vapi.bfd_udp_get_echo_source() + self.assertTrue(echo_source.is_set) + self.assertEqual(echo_source.sw_if_index, self.loopback0.sw_if_index) + self.assertTrue(echo_source.have_usable_ip4) + self.assertEqual(echo_source.ip4_addr.packed, echo_ip4) + self.assertTrue(echo_source.have_usable_ip6) + self.assertEqual(echo_source.ip6_addr.packed, echo_ip6) + + self.vapi.bfd_udp_del_echo_source() + echo_source = self.vapi.bfd_udp_get_echo_source() + self.assertFalse(echo_source.is_set) + self.assertFalse(echo_source.have_usable_ip4) + self.assertFalse(echo_source.have_usable_ip6) + class BFDTestSession(object): """ BFD session as seen from test framework side """ def __init__(self, test, interface, af, detect_mult=3, sha1_key=None, - bfd_key_id=None, our_seq_number=None): + bfd_key_id=None, our_seq_number=None, + tunnel_header=None, phy_interface=None): self.test = test self.af = af self.sha1_key = sha1_key self.bfd_key_id = bfd_key_id self.interface = interface + if phy_interface: + self.phy_interface = phy_interface + else: + self.phy_interface = self.interface self.udp_sport = randint(49152, 65535) if our_seq_number is None: self.our_seq_number = randint(0, 40000000) @@ -264,13 +334,15 @@ class BFDTestSession(object): self.our_seq_number = our_seq_number self.vpp_seq_number = None self.my_discriminator = 0 - self.desired_min_tx = 100000 - self.required_min_rx = 100000 + self.desired_min_tx = 300000 + self.required_min_rx = 300000 + self.required_min_echo_rx = None self.detect_mult = detect_mult self.diag = BFDDiagCode.no_diagnostic self.your_discriminator = None self.state = BFDState.down self.auth_type = BFDAuthType.no_auth + self.tunnel_header = tunnel_header def inc_seq_num(self): """ increment sequence number, wrapping if needed """ @@ -280,24 +352,27 @@ class BFDTestSession(object): self.our_seq_number += 1 def update(self, my_discriminator=None, your_discriminator=None, - desired_min_tx=None, required_min_rx=None, detect_mult=None, + desired_min_tx=None, required_min_rx=None, + required_min_echo_rx=None, detect_mult=None, diag=None, state=None, auth_type=None): """ update BFD parameters associated with session """ - if my_discriminator: + if my_discriminator is not None: self.my_discriminator = my_discriminator - if your_discriminator: + if your_discriminator is not None: self.your_discriminator = your_discriminator - if required_min_rx: + if required_min_rx is not None: self.required_min_rx = required_min_rx - if desired_min_tx: + if required_min_echo_rx is not None: + self.required_min_echo_rx = required_min_echo_rx + if desired_min_tx is not None: self.desired_min_tx = desired_min_tx - if detect_mult: + if detect_mult is not None: self.detect_mult = detect_mult - if diag: + if diag is not None: self.diag = diag - if state: + if state is not None: self.state = state - if auth_type: + if auth_type is not None: self.auth_type = auth_type def fill_packet_fields(self, packet): @@ -316,6 +391,11 @@ class BFDTestSession(object): "BFD: setting packet.required_min_rx_interval=%s", self.required_min_rx) bfd.required_min_rx_interval = self.required_min_rx + if self.required_min_echo_rx: + self.test.logger.debug( + "BFD: setting packet.required_min_echo_rx=%s", + self.required_min_echo_rx) + bfd.required_min_echo_rx_interval = self.required_min_echo_rx if self.desired_min_tx: self.test.logger.debug( "BFD: setting packet.desired_min_tx_interval=%s", @@ -348,17 +428,19 @@ class BFDTestSession(object): bfd.length = BFD.sha1_auth_len + BFD.bfd_pkt_len else: bfd = BFD() + packet = Ether(src=self.phy_interface.remote_mac, + dst=self.phy_interface.local_mac) + if self.tunnel_header: + packet = packet / self.tunnel_header if self.af == AF_INET6: - packet = (Ether(src=self.interface.remote_mac, - dst=self.interface.local_mac) / + packet = (packet / IPv6(src=self.interface.remote_ip6, dst=self.interface.local_ip6, hlim=255) / UDP(sport=self.udp_sport, dport=BFD.udp_dport) / bfd) else: - packet = (Ether(src=self.interface.remote_mac, - dst=self.interface.local_mac) / + packet = (packet / IP(src=self.interface.remote_ip4, dst=self.interface.local_ip4, ttl=255) / @@ -367,7 +449,8 @@ class BFDTestSession(object): self.test.logger.debug("BFD: Creating packet") self.fill_packet_fields(packet) if self.sha1_key: - hash_material = str(packet[BFD])[:32] + self.sha1_key.key + \ + hash_material = scapy.compat.raw( + packet[BFD])[:32] + self.sha1_key.key + \ "\0" * (20 - len(self.sha1_key.key)) self.test.logger.debug("BFD: Calculated SHA1 hash: %s" % hashlib.sha1(hash_material).hexdigest()) @@ -379,7 +462,7 @@ class BFDTestSession(object): if packet is None: packet = self.create_packet() if interface is None: - interface = self.test.pg0 + interface = self.phy_interface self.test.logger.debug(ppp("Sending packet:", packet)) interface.add_stream(packet) self.test.pg_start() @@ -424,7 +507,7 @@ class BFDTestSession(object): # last 20 bytes represent the hash - so replace them with the key, # pad the result with zeros and hash the result hash_material = bfd.original[:-20] + self.sha1_key.key + \ - "\0" * (20 - len(self.sha1_key.key)) + b"\0" * (20 - len(self.sha1_key.key)) expected_hash = hashlib.sha1(hash_material).hexdigest() self.test.assert_equal(binascii.hexlify(bfd.auth_key_hash), expected_hash, "Auth key hash") @@ -443,7 +526,7 @@ class BFDTestSession(object): def bfd_session_up(test): """ Bring BFD session up """ test.logger.info("BFD: Waiting for slow hello") - p = wait_for_bfd_packet(test, 2) + p = wait_for_bfd_packet(test, 2, is_tunnel=test.vpp_session.is_tunnel) old_offset = None if hasattr(test, 'vpp_clock_offset'): old_offset = test.vpp_clock_offset @@ -452,19 +535,25 @@ def bfd_session_up(test): test.vpp_clock_offset) if old_offset: test.assertAlmostEqual( - old_offset, test.vpp_clock_offset, delta=0.1, + old_offset, test.vpp_clock_offset, delta=0.5, msg="vpp clock offset not stable (new: %s, old: %s)" % (test.vpp_clock_offset, old_offset)) test.logger.info("BFD: Sending Init") test.test_session.update(my_discriminator=randint(0, 40000000), your_discriminator=p[BFD].my_discriminator, state=BFDState.init) + if test.test_session.sha1_key and test.test_session.sha1_key.auth_type == \ + BFDAuthType.meticulous_keyed_sha1: + test.test_session.inc_seq_num() test.test_session.send_packet() test.logger.info("BFD: Waiting for event") e = test.vapi.wait_for_event(1, "bfd_udp_session_details") verify_event(test, e, expected_state=BFDState.up) test.logger.info("BFD: Session is Up") test.test_session.update(state=BFDState.up) + if test.test_session.sha1_key and test.test_session.sha1_key.auth_type == \ + BFDAuthType.meticulous_keyed_sha1: + test.test_session.inc_seq_num() test.test_session.send_packet() test.assert_equal(test.vpp_session.state, BFDState.up, BFDState) @@ -473,6 +562,9 @@ def bfd_session_down(test): """ Bring BFD session down """ test.assert_equal(test.vpp_session.state, BFDState.up, BFDState) test.test_session.update(state=BFDState.down) + if test.test_session.sha1_key and test.test_session.sha1_key.auth_type == \ + BFDAuthType.meticulous_keyed_sha1: + test.test_session.inc_seq_num() test.test_session.send_packet() test.logger.info("BFD: Waiting for event") e = test.vapi.wait_for_event(1, "bfd_udp_session_details") @@ -481,17 +573,41 @@ def bfd_session_down(test): test.assert_equal(test.vpp_session.state, BFDState.down, BFDState) +def verify_bfd_session_config(test, session, state=None): + dump = session.get_bfd_udp_session_dump_entry() + test.assertIsNotNone(dump) + # since dump is not none, we have verified that sw_if_index and addresses + # are valid (in get_bfd_udp_session_dump_entry) + if state: + test.assert_equal(dump.state, state, "session state") + test.assert_equal(dump.required_min_rx, session.required_min_rx, + "required min rx interval") + test.assert_equal(dump.desired_min_tx, session.desired_min_tx, + "desired min tx interval") + test.assert_equal(dump.detect_mult, session.detect_mult, + "detect multiplier") + if session.sha1_key is None: + test.assert_equal(dump.is_authenticated, 0, "is_authenticated flag") + else: + test.assert_equal(dump.is_authenticated, 1, "is_authenticated flag") + test.assert_equal(dump.bfd_key_id, session.bfd_key_id, + "bfd key id") + test.assert_equal(dump.conf_key_id, + session.sha1_key.conf_key_id, + "config key id") + + def verify_ip(test, packet): """ Verify correctness of IP layer. """ if test.vpp_session.af == AF_INET6: ip = packet[IPv6] - local_ip = test.pg0.local_ip6 - remote_ip = test.pg0.remote_ip6 + local_ip = test.vpp_session.interface.local_ip6 + remote_ip = test.vpp_session.interface.remote_ip6 test.assert_equal(ip.hlim, 255, "IPv6 hop limit") else: ip = packet[IP] - local_ip = test.pg0.local_ip4 - remote_ip = test.pg0.remote_ip4 + local_ip = test.vpp_session.interface.local_ip4 + remote_ip = test.vpp_session.interface.remote_ip4 test.assert_equal(ip.ttl, 255, "IPv4 TTL") test.assert_equal(ip.src, local_ip, "IP source address") test.assert_equal(ip.dst, remote_ip, "IP destination address") @@ -508,28 +624,19 @@ def verify_udp(test, packet): def verify_event(test, event, expected_state): """ Verify correctness of event values. """ e = event - test.logger.debug("BFD: Event: %s" % repr(e)) + test.logger.debug("BFD: Event: %s" % moves.reprlib.repr(e)) test.assert_equal(e.sw_if_index, test.vpp_session.interface.sw_if_index, "BFD interface index") - is_ipv6 = 0 - if test.vpp_session.af == AF_INET6: - is_ipv6 = 1 - test.assert_equal(e.is_ipv6, is_ipv6, "is_ipv6") - if test.vpp_session.af == AF_INET: - test.assert_equal(e.local_addr[:4], test.vpp_session.local_addr_n, - "Local IPv4 address") - test.assert_equal(e.peer_addr[:4], test.vpp_session.peer_addr_n, - "Peer IPv4 address") - else: - test.assert_equal(e.local_addr, test.vpp_session.local_addr_n, - "Local IPv6 address") - test.assert_equal(e.peer_addr, test.vpp_session.peer_addr_n, - "Peer IPv6 address") + + test.assert_equal(str(e.local_addr), test.vpp_session.local_addr, + "Local IPv6 address") + test.assert_equal(str(e.peer_addr), test.vpp_session.peer_addr, + "Peer IPv6 address") test.assert_equal(e.state, expected_state, BFDState) -def wait_for_bfd_packet(test, timeout=1, pcap_time_min=None): +def wait_for_bfd_packet(test, timeout=1, pcap_time_min=None, is_tunnel=False): """ wait for BFD packet and verify its correctness :param timeout: how long to wait @@ -555,6 +662,10 @@ def wait_for_bfd_packet(test, timeout=1, pcap_time_min=None): (p.time, pcap_time_min), p)) else: break + if is_tunnel: + # strip an IP layer and move to the next + p = p[IP].payload + bfd = p[BFD] if bfd is None: raise Exception(ppp("Unexpected or invalid BFD packet:", p)) @@ -566,6 +677,7 @@ def wait_for_bfd_packet(test, timeout=1, pcap_time_min=None): return p +@unittest.skipUnless(running_extended_tests, "part of extended tests") class BFD4TestCase(VppTestCase): """Bidirectional Forwarding Detection (BFD)""" @@ -577,8 +689,13 @@ class BFD4TestCase(VppTestCase): @classmethod def setUpClass(cls): super(BFD4TestCase, cls).setUpClass() + cls.vapi.cli("set log class bfd level debug") try: cls.create_pg_interfaces([0]) + cls.create_loopback_interfaces(1) + cls.loopback0 = cls.lo_interfaces[0] + cls.loopback0.config_ip4() + cls.loopback0.admin_up() cls.pg0.config_ip4() cls.pg0.configure_ipv4_neighbors() cls.pg0.admin_up() @@ -588,6 +705,10 @@ class BFD4TestCase(VppTestCase): super(BFD4TestCase, cls).tearDownClass() raise + @classmethod + def tearDownClass(cls): + super(BFD4TestCase, cls).tearDownClass() + def setUp(self): super(BFD4TestCase, self).setUp() self.factory = AuthKeyFactory() @@ -599,7 +720,7 @@ class BFD4TestCase(VppTestCase): self.vpp_session.add_vpp_config() self.vpp_session.admin_up() self.test_session = BFDTestSession(self, self.pg0, AF_INET) - except: + except BaseException: self.vapi.want_bfd_events(enable_disable=0) raise @@ -613,11 +734,38 @@ class BFD4TestCase(VppTestCase): """ bring BFD session up """ bfd_session_up(self) + def test_session_up_by_ip(self): + """ bring BFD session up - first frame looked up by address pair """ + self.logger.info("BFD: Sending Slow control frame") + self.test_session.update(my_discriminator=randint(0, 40000000)) + self.test_session.send_packet() + self.pg0.enable_capture() + p = self.pg0.wait_for_packet(1) + self.assert_equal(p[BFD].your_discriminator, + self.test_session.my_discriminator, + "BFD - your discriminator") + self.assert_equal(p[BFD].state, BFDState.init, BFDState) + self.test_session.update(your_discriminator=p[BFD].my_discriminator, + state=BFDState.up) + self.logger.info("BFD: Waiting for event") + e = self.vapi.wait_for_event(1, "bfd_udp_session_details") + verify_event(self, e, expected_state=BFDState.init) + self.logger.info("BFD: Sending Up") + self.test_session.send_packet() + self.logger.info("BFD: Waiting for event") + e = self.vapi.wait_for_event(1, "bfd_udp_session_details") + verify_event(self, e, expected_state=BFDState.up) + self.logger.info("BFD: Session is Up") + self.test_session.update(state=BFDState.up) + self.test_session.send_packet() + self.assert_equal(self.vpp_session.state, BFDState.up, BFDState) + def test_session_down(self): """ bring BFD session down """ bfd_session_up(self) bfd_session_down(self) + @unittest.skipUnless(running_extended_tests, "part of extended tests") def test_hold_up(self): """ hold BFD session up """ bfd_session_up(self) @@ -627,6 +775,7 @@ class BFD4TestCase(VppTestCase): self.assert_equal(len(self.vapi.collect_events()), 0, "number of bfd events") + @unittest.skipUnless(running_extended_tests, "part of extended tests") def test_slow_timer(self): """ verify slow periodic control frames while session down """ packet_count = 3 @@ -641,42 +790,42 @@ class BFD4TestCase(VppTestCase): time_diff, 0.70, 1.05, "time between slow packets") prev_packet = next_packet + @unittest.skipUnless(running_extended_tests, "part of extended tests") def test_zero_remote_min_rx(self): """ no packets when zero remote required min rx interval """ bfd_session_up(self) self.test_session.update(required_min_rx=0) self.test_session.send_packet() - cap = 2 * self.vpp_session.desired_min_tx *\ - self.test_session.detect_mult - time_mark = time.time() - count = 0 - # busy wait here, trying to collect a packet or event, vpp is not - # allowed to send packets and the session will timeout first - so the - # Up->Down event must arrive before any packets do - while time.time() < time_mark + cap / USEC_IN_SEC: + for dummy in range(self.test_session.detect_mult): + self.sleep(self.vpp_session.required_min_rx / USEC_IN_SEC, + "sleep before transmitting bfd packet") + self.test_session.send_packet() try: - p = wait_for_bfd_packet( - self, timeout=0, - pcap_time_min=time_mark - self.vpp_clock_offset) + p = wait_for_bfd_packet(self, timeout=0) self.logger.error(ppp("Received unexpected packet:", p)) - count += 1 except CaptureTimeoutError: pass - events = self.vapi.collect_events() - if len(events) > 0: - verify_event(self, events[0], BFDState.down) - break - self.assert_equal(count, 0, "number of packets received") + self.assert_equal( + len(self.vapi.collect_events()), 0, "number of bfd events") + self.test_session.update(required_min_rx=300000) + for dummy in range(3): + self.test_session.send_packet() + wait_for_bfd_packet( + self, timeout=self.test_session.required_min_rx / USEC_IN_SEC) + self.assert_equal( + len(self.vapi.collect_events()), 0, "number of bfd events") + @unittest.skipUnless(running_extended_tests, "part of extended tests") def test_conn_down(self): """ verify session goes down after inactivity """ bfd_session_up(self) - detection_time = self.vpp_session.detect_mult *\ + detection_time = self.test_session.detect_mult *\ self.vpp_session.required_min_rx / USEC_IN_SEC self.sleep(detection_time, "waiting for BFD session time-out") e = self.vapi.wait_for_event(1, "bfd_udp_session_details") verify_event(self, e, expected_state=BFDState.down) + @unittest.skipUnless(running_extended_tests, "part of extended tests") def test_large_required_min_rx(self): """ large remote required min rx interval """ bfd_session_up(self) @@ -706,6 +855,7 @@ class BFD4TestCase(VppTestCase): break self.assert_equal(count, 0, "number of packets received") + @unittest.skipUnless(running_extended_tests, "part of extended tests") def test_immediate_remote_min_rx_reduction(self): """ immediately honor remote required min rx reduction """ self.vpp_session.remove_vpp_config() @@ -738,6 +888,7 @@ class BFD4TestCase(VppTestCase): "time between BFD packets") reference_packet = p + @unittest.skipUnless(running_extended_tests, "part of extended tests") def test_modify_req_min_rx_double(self): """ modify session - double required min rx """ bfd_session_up(self) @@ -767,6 +918,7 @@ class BFD4TestCase(VppTestCase): self.assert_in_range(time_to_event, .9 * timeout, 1.1 * timeout, "session timeout") + @unittest.skipUnless(running_extended_tests, "part of extended tests") def test_modify_req_min_rx_halve(self): """ modify session - halve required min rx """ self.vpp_session.modify_parameters( @@ -781,10 +933,11 @@ class BFD4TestCase(VppTestCase): # halve required min rx old_required_min_rx = self.vpp_session.required_min_rx self.vpp_session.modify_parameters( - required_min_rx=0.5 * self.vpp_session.required_min_rx) + required_min_rx=self.vpp_session.required_min_rx // 2) # now we wait 0.8*3*old-req-min-rx and the session should still be up self.sleep(0.8 * self.vpp_session.detect_mult * - old_required_min_rx / USEC_IN_SEC) + old_required_min_rx / USEC_IN_SEC, + "wait before finishing poll sequence") self.assert_equal(len(self.vapi.collect_events()), 0, "number of bfd events") p = wait_for_bfd_packet(self) @@ -796,17 +949,19 @@ class BFD4TestCase(VppTestCase): final[BFD].flags = "F" self.test_session.send_packet(final) # now the session should time out under new conditions + detection_time = self.test_session.detect_mult *\ + self.vpp_session.required_min_rx / USEC_IN_SEC before = time.time() - e = self.vapi.wait_for_event(1, "bfd_udp_session_details") + e = self.vapi.wait_for_event( + 2 * detection_time, "bfd_udp_session_details") after = time.time() - detection_time = self.vpp_session.detect_mult *\ - self.vpp_session.required_min_rx / USEC_IN_SEC self.assert_in_range(after - before, 0.9 * detection_time, 1.1 * detection_time, "time before bfd session goes down") verify_event(self, e, expected_state=BFDState.down) + @unittest.skipUnless(running_extended_tests, "part of extended tests") def test_modify_detect_mult(self): """ modify detect multiplier """ bfd_session_up(self) @@ -830,6 +985,84 @@ class BFD4TestCase(VppTestCase): self.assertNotIn("P", p.sprintf("%BFD.flags%"), "Poll bit not set in BFD packet") + @unittest.skipUnless(running_extended_tests, "part of extended tests") + def test_queued_poll(self): + """ test poll sequence queueing """ + bfd_session_up(self) + p = wait_for_bfd_packet(self) + self.vpp_session.modify_parameters( + required_min_rx=2 * self.vpp_session.required_min_rx) + p = wait_for_bfd_packet(self) + poll_sequence_start = time.time() + poll_sequence_length_min = 0.5 + send_final_after = time.time() + poll_sequence_length_min + # poll bit needs to be set + self.assertIn("P", p.sprintf("%BFD.flags%"), + "Poll bit not set in BFD packet") + self.assert_equal(p[BFD].required_min_rx_interval, + self.vpp_session.required_min_rx, + "BFD required min rx interval") + self.vpp_session.modify_parameters( + required_min_rx=2 * self.vpp_session.required_min_rx) + # 2nd poll sequence should be queued now + # don't send the reply back yet, wait for some time to emulate + # longer round-trip time + packet_count = 0 + while time.time() < send_final_after: + self.test_session.send_packet() + p = wait_for_bfd_packet(self) + self.assert_equal(len(self.vapi.collect_events()), 0, + "number of bfd events") + self.assert_equal(p[BFD].required_min_rx_interval, + self.vpp_session.required_min_rx, + "BFD required min rx interval") + packet_count += 1 + # poll bit must be set + self.assertIn("P", p.sprintf("%BFD.flags%"), + "Poll bit not set in BFD packet") + final = self.test_session.create_packet() + final[BFD].flags = "F" + self.test_session.send_packet(final) + # finish 1st with final + poll_sequence_length = time.time() - poll_sequence_start + # vpp must wait for some time before starting new poll sequence + poll_no_2_started = False + for dummy in range(2 * packet_count): + p = wait_for_bfd_packet(self) + self.assert_equal(len(self.vapi.collect_events()), 0, + "number of bfd events") + if "P" in p.sprintf("%BFD.flags%"): + poll_no_2_started = True + if time.time() < poll_sequence_start + poll_sequence_length: + raise Exception("VPP started 2nd poll sequence too soon") + final = self.test_session.create_packet() + final[BFD].flags = "F" + self.test_session.send_packet(final) + break + else: + self.test_session.send_packet() + self.assertTrue(poll_no_2_started, "2nd poll sequence not performed") + # finish 2nd with final + final = self.test_session.create_packet() + final[BFD].flags = "F" + self.test_session.send_packet(final) + p = wait_for_bfd_packet(self) + # poll bit must not be set + self.assertNotIn("P", p.sprintf("%BFD.flags%"), + "Poll bit set in BFD packet") + + @unittest.skipUnless(running_extended_tests, "part of extended tests") + def test_poll_response(self): + """ test correct response to control frame with poll bit set """ + bfd_session_up(self) + poll = self.test_session.create_packet() + poll[BFD].flags = "P" + self.test_session.send_packet(poll) + final = wait_for_bfd_packet( + self, pcap_time_min=time.time() - self.vpp_clock_offset) + self.assertIn("F", final.sprintf("%BFD.flags%")) + + @unittest.skipUnless(running_extended_tests, "part of extended tests") def test_no_periodic_if_remote_demand(self): """ no periodic frames outside poll sequence if remote demand set """ bfd_session_up(self) @@ -842,7 +1075,7 @@ class BFD4TestCase(VppTestCase): / USEC_IN_SEC count = 0 for dummy in range(self.test_session.detect_mult * 2): - time.sleep(transmit_time) + self.sleep(transmit_time) self.test_session.send_packet(demand) try: p = wait_for_bfd_packet(self, timeout=0) @@ -868,7 +1101,7 @@ class BFD4TestCase(VppTestCase): echo_packet = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / IP(src=self.pg0.remote_ip4, - dst=self.pg0.local_ip4) / + dst=self.pg0.remote_ip4) / UDP(dport=BFD.udp_dport_echo) / Raw("this should be looped back")) for dummy in range(echo_packet_count): @@ -887,18 +1120,291 @@ class BFD4TestCase(VppTestCase): self.assert_equal(self.pg0.local_mac, ether.src, "Source MAC") ip = p[IP] self.assert_equal(self.pg0.remote_ip4, ip.dst, "Destination IP") - self.assert_equal(self.pg0.local_ip4, ip.src, "Destination IP") + self.assert_equal(self.pg0.remote_ip4, ip.src, "Destination IP") udp = p[UDP] self.assert_equal(udp.dport, BFD.udp_dport_echo, "UDP destination port") self.assert_equal(udp.sport, udp_sport_rx, "UDP source port") udp_sport_rx += 1 - self.assertTrue(p.haslayer(Raw) and p[Raw] == echo_packet[Raw], - "Received packet is not the echo packet sent") + # need to compare the hex payload here, otherwise BFD_vpp_echo + # gets in way + self.assertEqual(scapy.compat.raw(p[UDP].payload), + scapy.compat.raw(echo_packet[UDP].payload), + "Received packet is not the echo packet sent") self.assert_equal(udp_sport_tx, udp_sport_rx, "UDP source port (== " "ECHO packet identifier for test purposes)") + def test_echo(self): + """ echo function """ + bfd_session_up(self) + self.test_session.update(required_min_echo_rx=150000) + self.test_session.send_packet() + detection_time = self.test_session.detect_mult *\ + self.vpp_session.required_min_rx / USEC_IN_SEC + # echo shouldn't work without echo source set + for dummy in range(10): + sleep = self.vpp_session.required_min_rx / USEC_IN_SEC + self.sleep(sleep, "delay before sending bfd packet") + self.test_session.send_packet() + p = wait_for_bfd_packet( + self, pcap_time_min=time.time() - self.vpp_clock_offset) + self.assert_equal(p[BFD].required_min_rx_interval, + self.vpp_session.required_min_rx, + "BFD required min rx interval") + self.test_session.send_packet() + self.vapi.bfd_udp_set_echo_source( + sw_if_index=self.loopback0.sw_if_index) + echo_seen = False + # should be turned on - loopback echo packets + for dummy in range(3): + loop_until = time.time() + 0.75 * detection_time + while time.time() < loop_until: + p = self.pg0.wait_for_packet(1) + self.logger.debug(ppp("Got packet:", p)) + if p[UDP].dport == BFD.udp_dport_echo: + self.assert_equal( + p[IP].dst, self.pg0.local_ip4, "BFD ECHO dst IP") + self.assertNotEqual(p[IP].src, self.loopback0.local_ip4, + "BFD ECHO src IP equal to loopback IP") + self.logger.debug(ppp("Looping back packet:", p)) + self.assert_equal(p[Ether].dst, self.pg0.remote_mac, + "ECHO packet destination MAC address") + p[Ether].dst = self.pg0.local_mac + self.pg0.add_stream(p) + self.pg_start() + echo_seen = True + elif p.haslayer(BFD): + if echo_seen: + self.assertGreaterEqual( + p[BFD].required_min_rx_interval, + 1000000) + if "P" in p.sprintf("%BFD.flags%"): + final = self.test_session.create_packet() + final[BFD].flags = "F" + self.test_session.send_packet(final) + else: + raise Exception(ppp("Received unknown packet:", p)) + + self.assert_equal(len(self.vapi.collect_events()), 0, + "number of bfd events") + self.test_session.send_packet() + self.assertTrue(echo_seen, "No echo packets received") + + @unittest.skipUnless(running_extended_tests, "part of extended tests") + def test_echo_fail(self): + """ session goes down if echo function fails """ + bfd_session_up(self) + self.test_session.update(required_min_echo_rx=150000) + self.test_session.send_packet() + detection_time = self.test_session.detect_mult *\ + self.vpp_session.required_min_rx / USEC_IN_SEC + self.vapi.bfd_udp_set_echo_source( + sw_if_index=self.loopback0.sw_if_index) + # echo function should be used now, but we will drop the echo packets + verified_diag = False + for dummy in range(3): + loop_until = time.time() + 0.75 * detection_time + while time.time() < loop_until: + p = self.pg0.wait_for_packet(1) + self.logger.debug(ppp("Got packet:", p)) + if p[UDP].dport == BFD.udp_dport_echo: + # dropped + pass + elif p.haslayer(BFD): + if "P" in p.sprintf("%BFD.flags%"): + self.assertGreaterEqual( + p[BFD].required_min_rx_interval, + 1000000) + final = self.test_session.create_packet() + final[BFD].flags = "F" + self.test_session.send_packet(final) + if p[BFD].state == BFDState.down: + self.assert_equal(p[BFD].diag, + BFDDiagCode.echo_function_failed, + BFDDiagCode) + verified_diag = True + else: + raise Exception(ppp("Received unknown packet:", p)) + self.test_session.send_packet() + events = self.vapi.collect_events() + self.assert_equal(len(events), 1, "number of bfd events") + self.assert_equal(events[0].state, BFDState.down, BFDState) + self.assertTrue(verified_diag, "Incorrect diagnostics code received") + + @unittest.skipUnless(running_extended_tests, "part of extended tests") + def test_echo_stop(self): + """ echo function stops if peer sets required min echo rx zero """ + bfd_session_up(self) + self.test_session.update(required_min_echo_rx=150000) + self.test_session.send_packet() + self.vapi.bfd_udp_set_echo_source( + sw_if_index=self.loopback0.sw_if_index) + # wait for first echo packet + while True: + p = self.pg0.wait_for_packet(1) + self.logger.debug(ppp("Got packet:", p)) + if p[UDP].dport == BFD.udp_dport_echo: + self.logger.debug(ppp("Looping back packet:", p)) + p[Ether].dst = self.pg0.local_mac + self.pg0.add_stream(p) + self.pg_start() + break + elif p.haslayer(BFD): + # ignore BFD + pass + else: + raise Exception(ppp("Received unknown packet:", p)) + self.test_session.update(required_min_echo_rx=0) + self.test_session.send_packet() + # echo packets shouldn't arrive anymore + for dummy in range(5): + wait_for_bfd_packet( + self, pcap_time_min=time.time() - self.vpp_clock_offset) + self.test_session.send_packet() + events = self.vapi.collect_events() + self.assert_equal(len(events), 0, "number of bfd events") + + @unittest.skipUnless(running_extended_tests, "part of extended tests") + def test_echo_source_removed(self): + """ echo function stops if echo source is removed """ + bfd_session_up(self) + self.test_session.update(required_min_echo_rx=150000) + self.test_session.send_packet() + self.vapi.bfd_udp_set_echo_source( + sw_if_index=self.loopback0.sw_if_index) + # wait for first echo packet + while True: + p = self.pg0.wait_for_packet(1) + self.logger.debug(ppp("Got packet:", p)) + if p[UDP].dport == BFD.udp_dport_echo: + self.logger.debug(ppp("Looping back packet:", p)) + p[Ether].dst = self.pg0.local_mac + self.pg0.add_stream(p) + self.pg_start() + break + elif p.haslayer(BFD): + # ignore BFD + pass + else: + raise Exception(ppp("Received unknown packet:", p)) + self.vapi.bfd_udp_del_echo_source() + self.test_session.send_packet() + # echo packets shouldn't arrive anymore + for dummy in range(5): + wait_for_bfd_packet( + self, pcap_time_min=time.time() - self.vpp_clock_offset) + self.test_session.send_packet() + events = self.vapi.collect_events() + self.assert_equal(len(events), 0, "number of bfd events") + + @unittest.skipUnless(running_extended_tests, "part of extended tests") + def test_stale_echo(self): + """ stale echo packets don't keep a session up """ + bfd_session_up(self) + self.test_session.update(required_min_echo_rx=150000) + self.vapi.bfd_udp_set_echo_source( + sw_if_index=self.loopback0.sw_if_index) + self.test_session.send_packet() + # should be turned on - loopback echo packets + echo_packet = None + timeout_at = None + timeout_ok = False + for dummy in range(10 * self.vpp_session.detect_mult): + p = self.pg0.wait_for_packet(1) + if p[UDP].dport == BFD.udp_dport_echo: + if echo_packet is None: + self.logger.debug(ppp("Got first echo packet:", p)) + echo_packet = p + timeout_at = time.time() + self.vpp_session.detect_mult * \ + self.test_session.required_min_echo_rx / USEC_IN_SEC + else: + self.logger.debug(ppp("Got followup echo packet:", p)) + self.logger.debug(ppp("Looping back first echo packet:", p)) + echo_packet[Ether].dst = self.pg0.local_mac + self.pg0.add_stream(echo_packet) + self.pg_start() + elif p.haslayer(BFD): + self.logger.debug(ppp("Got packet:", p)) + if "P" in p.sprintf("%BFD.flags%"): + final = self.test_session.create_packet() + final[BFD].flags = "F" + self.test_session.send_packet(final) + if p[BFD].state == BFDState.down: + self.assertIsNotNone( + timeout_at, + "Session went down before first echo packet received") + now = time.time() + self.assertGreaterEqual( + now, timeout_at, + "Session timeout at %s, but is expected at %s" % + (now, timeout_at)) + self.assert_equal(p[BFD].diag, + BFDDiagCode.echo_function_failed, + BFDDiagCode) + events = self.vapi.collect_events() + self.assert_equal(len(events), 1, "number of bfd events") + self.assert_equal(events[0].state, BFDState.down, BFDState) + timeout_ok = True + break + else: + raise Exception(ppp("Received unknown packet:", p)) + self.test_session.send_packet() + self.assertTrue(timeout_ok, "Expected timeout event didn't occur") + + @unittest.skipUnless(running_extended_tests, "part of extended tests") + def test_invalid_echo_checksum(self): + """ echo packets with invalid checksum don't keep a session up """ + bfd_session_up(self) + self.test_session.update(required_min_echo_rx=150000) + self.vapi.bfd_udp_set_echo_source( + sw_if_index=self.loopback0.sw_if_index) + self.test_session.send_packet() + # should be turned on - loopback echo packets + timeout_at = None + timeout_ok = False + for dummy in range(10 * self.vpp_session.detect_mult): + p = self.pg0.wait_for_packet(1) + if p[UDP].dport == BFD.udp_dport_echo: + self.logger.debug(ppp("Got echo packet:", p)) + if timeout_at is None: + timeout_at = time.time() + self.vpp_session.detect_mult * \ + self.test_session.required_min_echo_rx / USEC_IN_SEC + p[BFD_vpp_echo].checksum = getrandbits(64) + p[Ether].dst = self.pg0.local_mac + self.logger.debug(ppp("Looping back modified echo packet:", p)) + self.pg0.add_stream(p) + self.pg_start() + elif p.haslayer(BFD): + self.logger.debug(ppp("Got packet:", p)) + if "P" in p.sprintf("%BFD.flags%"): + final = self.test_session.create_packet() + final[BFD].flags = "F" + self.test_session.send_packet(final) + if p[BFD].state == BFDState.down: + self.assertIsNotNone( + timeout_at, + "Session went down before first echo packet received") + now = time.time() + self.assertGreaterEqual( + now, timeout_at, + "Session timeout at %s, but is expected at %s" % + (now, timeout_at)) + self.assert_equal(p[BFD].diag, + BFDDiagCode.echo_function_failed, + BFDDiagCode) + events = self.vapi.collect_events() + self.assert_equal(len(events), 1, "number of bfd events") + self.assert_equal(events[0].state, BFDState.down, BFDState) + timeout_ok = True + break + else: + raise Exception(ppp("Received unknown packet:", p)) + self.test_session.send_packet() + self.assertTrue(timeout_ok, "Expected timeout event didn't occur") + + @unittest.skipUnless(running_extended_tests, "part of extended tests") def test_admin_up_down(self): + """ put session admin-up and admin-down """ bfd_session_up(self) self.vpp_session.admin_down() self.pg0.enable_capture() @@ -906,32 +1412,88 @@ class BFD4TestCase(VppTestCase): verify_event(self, e, expected_state=BFDState.admin_down) for dummy in range(2): p = wait_for_bfd_packet(self) - self.assert_equal(BFDState.admin_down, p[BFD].state, BFDState) + self.assert_equal(p[BFD].state, BFDState.admin_down, BFDState) # try to bring session up - shouldn't be possible self.test_session.update(state=BFDState.init) self.test_session.send_packet() for dummy in range(2): p = wait_for_bfd_packet(self) - self.assert_equal(BFDState.admin_down, p[BFD].state, BFDState) + self.assert_equal(p[BFD].state, BFDState.admin_down, BFDState) self.vpp_session.admin_up() self.test_session.update(state=BFDState.down) e = self.vapi.wait_for_event(1, "bfd_udp_session_details") verify_event(self, e, expected_state=BFDState.down) - p = wait_for_bfd_packet(self) - self.assert_equal(BFDState.down, p[BFD].state, BFDState) + p = wait_for_bfd_packet( + self, pcap_time_min=time.time() - self.vpp_clock_offset) + self.assert_equal(p[BFD].state, BFDState.down, BFDState) self.test_session.send_packet() - p = wait_for_bfd_packet(self) - self.assert_equal(BFDState.init, p[BFD].state, BFDState) + p = wait_for_bfd_packet( + self, pcap_time_min=time.time() - self.vpp_clock_offset) + self.assert_equal(p[BFD].state, BFDState.init, BFDState) e = self.vapi.wait_for_event(1, "bfd_udp_session_details") verify_event(self, e, expected_state=BFDState.init) self.test_session.update(state=BFDState.up) self.test_session.send_packet() - p = wait_for_bfd_packet(self) - self.assert_equal(BFDState.up, p[BFD].state, BFDState) + p = wait_for_bfd_packet( + self, pcap_time_min=time.time() - self.vpp_clock_offset) + self.assert_equal(p[BFD].state, BFDState.up, BFDState) e = self.vapi.wait_for_event(1, "bfd_udp_session_details") verify_event(self, e, expected_state=BFDState.up) + @unittest.skipUnless(running_extended_tests, "part of extended tests") + def test_config_change_remote_demand(self): + """ configuration change while peer in demand mode """ + bfd_session_up(self) + demand = self.test_session.create_packet() + demand[BFD].flags = "D" + self.test_session.send_packet(demand) + self.vpp_session.modify_parameters( + required_min_rx=2 * self.vpp_session.required_min_rx) + p = wait_for_bfd_packet( + self, pcap_time_min=time.time() - self.vpp_clock_offset) + # poll bit must be set + self.assertIn("P", p.sprintf("%BFD.flags%"), "Poll bit not set") + # terminate poll sequence + final = self.test_session.create_packet() + final[BFD].flags = "D+F" + self.test_session.send_packet(final) + # vpp should be quiet now again + transmit_time = 0.9 \ + * max(self.vpp_session.required_min_rx, + self.test_session.desired_min_tx) \ + / USEC_IN_SEC + count = 0 + for dummy in range(self.test_session.detect_mult * 2): + self.sleep(transmit_time) + self.test_session.send_packet(demand) + try: + p = wait_for_bfd_packet(self, timeout=0) + self.logger.error(ppp("Received unexpected packet:", p)) + count += 1 + except CaptureTimeoutError: + pass + events = self.vapi.collect_events() + for e in events: + self.logger.error("Received unexpected event: %s", e) + self.assert_equal(count, 0, "number of packets received") + self.assert_equal(len(events), 0, "number of events received") + def test_intf_deleted(self): + """ interface with bfd session deleted """ + intf = VppLoInterface(self) + intf.config_ip4() + intf.admin_up() + sw_if_index = intf.sw_if_index + vpp_session = VppBFDUDPSession(self, intf, intf.remote_ip4) + vpp_session.add_vpp_config() + vpp_session.admin_up() + intf.remove_vpp_config() + e = self.vapi.wait_for_event(1, "bfd_udp_session_details") + self.assert_equal(e.sw_if_index, sw_if_index, "sw_if_index") + self.assertFalse(vpp_session.query_vpp_config()) + + +@unittest.skipUnless(running_extended_tests, "part of extended tests") class BFD6TestCase(VppTestCase): """Bidirectional Forwarding Detection (BFD) (IPv6) """ @@ -943,17 +1505,26 @@ class BFD6TestCase(VppTestCase): @classmethod def setUpClass(cls): super(BFD6TestCase, cls).setUpClass() + cls.vapi.cli("set log class bfd level debug") try: cls.create_pg_interfaces([0]) cls.pg0.config_ip6() cls.pg0.configure_ipv6_neighbors() cls.pg0.admin_up() cls.pg0.resolve_ndp() + cls.create_loopback_interfaces(1) + cls.loopback0 = cls.lo_interfaces[0] + cls.loopback0.config_ip6() + cls.loopback0.admin_up() except Exception: super(BFD6TestCase, cls).tearDownClass() raise + @classmethod + def tearDownClass(cls): + super(BFD6TestCase, cls).tearDownClass() + def setUp(self): super(BFD6TestCase, self).setUp() self.factory = AuthKeyFactory() @@ -967,7 +1538,7 @@ class BFD6TestCase(VppTestCase): self.vpp_session.admin_up() self.test_session = BFDTestSession(self, self.pg0, AF_INET6) self.logger.debug(self.vapi.cli("show adj nbr")) - except: + except BaseException: self.vapi.want_bfd_events(enable_disable=0) raise @@ -981,6 +1552,33 @@ class BFD6TestCase(VppTestCase): """ bring BFD session up """ bfd_session_up(self) + def test_session_up_by_ip(self): + """ bring BFD session up - first frame looked up by address pair """ + self.logger.info("BFD: Sending Slow control frame") + self.test_session.update(my_discriminator=randint(0, 40000000)) + self.test_session.send_packet() + self.pg0.enable_capture() + p = self.pg0.wait_for_packet(1) + self.assert_equal(p[BFD].your_discriminator, + self.test_session.my_discriminator, + "BFD - your discriminator") + self.assert_equal(p[BFD].state, BFDState.init, BFDState) + self.test_session.update(your_discriminator=p[BFD].my_discriminator, + state=BFDState.up) + self.logger.info("BFD: Waiting for event") + e = self.vapi.wait_for_event(1, "bfd_udp_session_details") + verify_event(self, e, expected_state=BFDState.init) + self.logger.info("BFD: Sending Up") + self.test_session.send_packet() + self.logger.info("BFD: Waiting for event") + e = self.vapi.wait_for_event(1, "bfd_udp_session_details") + verify_event(self, e, expected_state=BFDState.up) + self.logger.info("BFD: Session is Up") + self.test_session.update(state=BFDState.up) + self.test_session.send_packet() + self.assert_equal(self.vpp_session.state, BFDState.up, BFDState) + + @unittest.skipUnless(running_extended_tests, "part of extended tests") def test_hold_up(self): """ hold BFD session up """ bfd_session_up(self) @@ -1003,7 +1601,7 @@ class BFD6TestCase(VppTestCase): echo_packet = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) / IPv6(src=self.pg0.remote_ip6, - dst=self.pg0.local_ip6) / + dst=self.pg0.remote_ip6) / UDP(dport=BFD.udp_dport_echo) / Raw("this should be looped back")) for dummy in range(echo_packet_count): @@ -1022,18 +1620,282 @@ class BFD6TestCase(VppTestCase): self.assert_equal(self.pg0.local_mac, ether.src, "Source MAC") ip = p[IPv6] self.assert_equal(self.pg0.remote_ip6, ip.dst, "Destination IP") - self.assert_equal(self.pg0.local_ip6, ip.src, "Destination IP") + self.assert_equal(self.pg0.remote_ip6, ip.src, "Destination IP") udp = p[UDP] self.assert_equal(udp.dport, BFD.udp_dport_echo, "UDP destination port") self.assert_equal(udp.sport, udp_sport_rx, "UDP source port") udp_sport_rx += 1 - self.assertTrue(p.haslayer(Raw) and p[Raw] == echo_packet[Raw], - "Received packet is not the echo packet sent") + # need to compare the hex payload here, otherwise BFD_vpp_echo + # gets in way + self.assertEqual(scapy.compat.raw(p[UDP].payload), + scapy.compat.raw(echo_packet[UDP].payload), + "Received packet is not the echo packet sent") self.assert_equal(udp_sport_tx, udp_sport_rx, "UDP source port (== " "ECHO packet identifier for test purposes)") + self.assert_equal(udp_sport_tx, udp_sport_rx, "UDP source port (== " + "ECHO packet identifier for test purposes)") + + def test_echo(self): + """ echo function """ + bfd_session_up(self) + self.test_session.update(required_min_echo_rx=150000) + self.test_session.send_packet() + detection_time = self.test_session.detect_mult *\ + self.vpp_session.required_min_rx / USEC_IN_SEC + # echo shouldn't work without echo source set + for dummy in range(10): + sleep = self.vpp_session.required_min_rx / USEC_IN_SEC + self.sleep(sleep, "delay before sending bfd packet") + self.test_session.send_packet() + p = wait_for_bfd_packet( + self, pcap_time_min=time.time() - self.vpp_clock_offset) + self.assert_equal(p[BFD].required_min_rx_interval, + self.vpp_session.required_min_rx, + "BFD required min rx interval") + self.test_session.send_packet() + self.vapi.bfd_udp_set_echo_source( + sw_if_index=self.loopback0.sw_if_index) + echo_seen = False + # should be turned on - loopback echo packets + for dummy in range(3): + loop_until = time.time() + 0.75 * detection_time + while time.time() < loop_until: + p = self.pg0.wait_for_packet(1) + self.logger.debug(ppp("Got packet:", p)) + if p[UDP].dport == BFD.udp_dport_echo: + self.assert_equal( + p[IPv6].dst, self.pg0.local_ip6, "BFD ECHO dst IP") + self.assertNotEqual(p[IPv6].src, self.loopback0.local_ip6, + "BFD ECHO src IP equal to loopback IP") + self.logger.debug(ppp("Looping back packet:", p)) + self.assert_equal(p[Ether].dst, self.pg0.remote_mac, + "ECHO packet destination MAC address") + p[Ether].dst = self.pg0.local_mac + self.pg0.add_stream(p) + self.pg_start() + echo_seen = True + elif p.haslayer(BFD): + if echo_seen: + self.assertGreaterEqual( + p[BFD].required_min_rx_interval, + 1000000) + if "P" in p.sprintf("%BFD.flags%"): + final = self.test_session.create_packet() + final[BFD].flags = "F" + self.test_session.send_packet(final) + else: + raise Exception(ppp("Received unknown packet:", p)) + + self.assert_equal(len(self.vapi.collect_events()), 0, + "number of bfd events") + self.test_session.send_packet() + self.assertTrue(echo_seen, "No echo packets received") + + def test_intf_deleted(self): + """ interface with bfd session deleted """ + intf = VppLoInterface(self) + intf.config_ip6() + intf.admin_up() + sw_if_index = intf.sw_if_index + vpp_session = VppBFDUDPSession( + self, intf, intf.remote_ip6, af=AF_INET6) + vpp_session.add_vpp_config() + vpp_session.admin_up() + intf.remove_vpp_config() + e = self.vapi.wait_for_event(1, "bfd_udp_session_details") + self.assert_equal(e.sw_if_index, sw_if_index, "sw_if_index") + self.assertFalse(vpp_session.query_vpp_config()) + + +@unittest.skipUnless(running_extended_tests, "part of extended tests") +class BFDFIBTestCase(VppTestCase): + """ BFD-FIB interactions (IPv6) """ + + vpp_session = None + test_session = None + + @classmethod + def setUpClass(cls): + super(BFDFIBTestCase, cls).setUpClass() + + @classmethod + def tearDownClass(cls): + super(BFDFIBTestCase, cls).tearDownClass() + + def setUp(self): + super(BFDFIBTestCase, self).setUp() + self.create_pg_interfaces(range(1)) + + self.vapi.want_bfd_events() + self.pg0.enable_capture() + + for i in self.pg_interfaces: + i.admin_up() + i.config_ip6() + i.configure_ipv6_neighbors() + + def tearDown(self): + if not self.vpp_dead: + self.vapi.want_bfd_events(enable_disable=False) + + super(BFDFIBTestCase, self).tearDown() + + @staticmethod + def pkt_is_not_data_traffic(p): + """ not data traffic implies BFD or the usual IPv6 ND/RA""" + if p.haslayer(BFD) or is_ipv6_misc(p): + return True + return False + + def test_session_with_fib(self): + """ BFD-FIB interactions """ + + # packets to match against both of the routes + p = [(Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / + IPv6(src="3001::1", dst="2001::1") / + UDP(sport=1234, dport=1234) / + Raw('\xa5' * 100)), + (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / + IPv6(src="3001::1", dst="2002::1") / + UDP(sport=1234, dport=1234) / + Raw('\xa5' * 100))] + + # A recursive and a non-recursive route via a next-hop that + # will have a BFD session + ip_2001_s_64 = VppIpRoute(self, "2001::", 64, + [VppRoutePath(self.pg0.remote_ip6, + self.pg0.sw_if_index)]) + ip_2002_s_64 = VppIpRoute(self, "2002::", 64, + [VppRoutePath(self.pg0.remote_ip6, + 0xffffffff)]) + ip_2001_s_64.add_vpp_config() + ip_2002_s_64.add_vpp_config() + + # bring the session up now the routes are present + self.vpp_session = VppBFDUDPSession(self, + self.pg0, + self.pg0.remote_ip6, + af=AF_INET6) + self.vpp_session.add_vpp_config() + self.vpp_session.admin_up() + self.test_session = BFDTestSession(self, self.pg0, AF_INET6) + + # session is up - traffic passes + bfd_session_up(self) + + self.pg0.add_stream(p) + self.pg_start() + for packet in p: + captured = self.pg0.wait_for_packet( + 1, + filter_out_fn=self.pkt_is_not_data_traffic) + self.assertEqual(captured[IPv6].dst, + packet[IPv6].dst) + + # session is up - traffic is dropped + bfd_session_down(self) + + self.pg0.add_stream(p) + self.pg_start() + with self.assertRaises(CaptureTimeoutError): + self.pg0.wait_for_packet(1, self.pkt_is_not_data_traffic) + + # session is up - traffic passes + bfd_session_up(self) + + self.pg0.add_stream(p) + self.pg_start() + for packet in p: + captured = self.pg0.wait_for_packet( + 1, + filter_out_fn=self.pkt_is_not_data_traffic) + self.assertEqual(captured[IPv6].dst, + packet[IPv6].dst) + + +@unittest.skipUnless(running_extended_tests, "part of extended tests") +class BFDTunTestCase(VppTestCase): + """ BFD over GRE tunnel """ + + vpp_session = None + test_session = None + + @classmethod + def setUpClass(cls): + super(BFDTunTestCase, cls).setUpClass() + + @classmethod + def tearDownClass(cls): + super(BFDTunTestCase, cls).tearDownClass() + + def setUp(self): + super(BFDTunTestCase, self).setUp() + self.create_pg_interfaces(range(1)) + + self.vapi.want_bfd_events() + self.pg0.enable_capture() + + for i in self.pg_interfaces: + i.admin_up() + i.config_ip4() + i.resolve_arp() + + def tearDown(self): + if not self.vpp_dead: + self.vapi.want_bfd_events(enable_disable=0) + + super(BFDTunTestCase, self).tearDown() + + @staticmethod + def pkt_is_not_data_traffic(p): + """ not data traffic implies BFD or the usual IPv6 ND/RA""" + if p.haslayer(BFD) or is_ipv6_misc(p): + return True + return False + + def test_bfd_o_gre(self): + """ BFD-o-GRE """ + + # A GRE interface over which to run a BFD session + gre_if = VppGreInterface(self, + self.pg0.local_ip4, + self.pg0.remote_ip4) + gre_if.add_vpp_config() + gre_if.admin_up() + gre_if.config_ip4() + + # bring the session up now the routes are present + self.vpp_session = VppBFDUDPSession(self, + gre_if, + gre_if.remote_ip4, + is_tunnel=True) + self.vpp_session.add_vpp_config() + self.vpp_session.admin_up() + + self.test_session = BFDTestSession( + self, gre_if, AF_INET, + tunnel_header=(IP(src=self.pg0.remote_ip4, + dst=self.pg0.local_ip4) / + GRE()), + phy_interface=self.pg0) + + # packets to match against both of the routes + p = [(Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) / + IP(src=self.pg0.remote_ip4, dst=gre_if.remote_ip4) / + UDP(sport=1234, dport=1234) / + Raw('\xa5' * 100))] + + # session is up - traffic passes + bfd_session_up(self) + + self.send_and_expect(self.pg0, p, self.pg0) + + # bring session down + bfd_session_down(self) +@unittest.skipUnless(running_extended_tests, "part of extended tests") class BFDSHA1TestCase(VppTestCase): """Bidirectional Forwarding Detection (BFD) (SHA1 auth) """ @@ -1045,6 +1907,7 @@ class BFDSHA1TestCase(VppTestCase): @classmethod def setUpClass(cls): super(BFDSHA1TestCase, cls).setUpClass() + cls.vapi.cli("set log class bfd level debug") try: cls.create_pg_interfaces([0]) cls.pg0.config_ip4() @@ -1055,6 +1918,10 @@ class BFDSHA1TestCase(VppTestCase): super(BFDSHA1TestCase, cls).tearDownClass() raise + @classmethod + def tearDownClass(cls): + super(BFDSHA1TestCase, cls).tearDownClass() + def setUp(self): super(BFDSHA1TestCase, self).setUp() self.factory = AuthKeyFactory() @@ -1063,7 +1930,7 @@ class BFDSHA1TestCase(VppTestCase): def tearDown(self): if not self.vpp_dead: - self.vapi.want_bfd_events(enable_disable=0) + self.vapi.want_bfd_events(enable_disable=False) self.vapi.collect_events() # clear the event queue super(BFDSHA1TestCase, self).tearDown() @@ -1081,6 +1948,7 @@ class BFDSHA1TestCase(VppTestCase): bfd_key_id=self.vpp_session.bfd_key_id) bfd_session_up(self) + @unittest.skipUnless(running_extended_tests, "part of extended tests") def test_hold_up(self): """ hold BFD session up """ key = self.factory.create_random_key(self) @@ -1099,6 +1967,7 @@ class BFDSHA1TestCase(VppTestCase): self.test_session.send_packet() self.assert_equal(self.vpp_session.state, BFDState.up, BFDState) + @unittest.skipUnless(running_extended_tests, "part of extended tests") def test_hold_up_meticulous(self): """ hold BFD session up - meticulous auth """ key = self.factory.create_random_key( @@ -1120,29 +1989,26 @@ class BFDSHA1TestCase(VppTestCase): self.test_session.send_packet() self.assert_equal(self.vpp_session.state, BFDState.up, BFDState) + @unittest.skipUnless(running_extended_tests, "part of extended tests") def test_send_bad_seq_number(self): - """ session is not kept alive by msgs with bad seq numbers""" + """ session is not kept alive by msgs with bad sequence numbers""" key = self.factory.create_random_key( self, BFDAuthType.meticulous_keyed_sha1) key.add_vpp_config() self.vpp_session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4, sha1_key=key) self.vpp_session.add_vpp_config() - self.vpp_session.admin_up() self.test_session = BFDTestSession( self, self.pg0, AF_INET, sha1_key=key, bfd_key_id=self.vpp_session.bfd_key_id) bfd_session_up(self) - detection_time = self.vpp_session.detect_mult *\ + detection_time = self.test_session.detect_mult *\ self.vpp_session.required_min_rx / USEC_IN_SEC - session_timeout = time.time() + detection_time - while time.time() < session_timeout: - self.assert_equal(len(self.vapi.collect_events()), 0, - "number of bfd events") - wait_for_bfd_packet(self) + send_until = time.time() + 2 * detection_time + while time.time() < send_until: self.test_session.send_packet() - wait_for_bfd_packet(self) - self.test_session.send_packet() + self.sleep(0.7 * self.vpp_session.required_min_rx / USEC_IN_SEC, + "time between bfd packets") e = self.vapi.collect_events() # session should be down now, because the sequence numbers weren't # updated @@ -1166,7 +2032,6 @@ class BFDSHA1TestCase(VppTestCase): self.vpp_session = vpp_bfd_udp_session self.vpp_session.add_vpp_config() - self.vpp_session.admin_up() self.test_session = legitimate_test_session # bring vpp session up bfd_session_up(self) @@ -1187,6 +2052,7 @@ class BFDSHA1TestCase(VppTestCase): wait_for_bfd_packet(self) self.assert_equal(self.vpp_session.state, BFDState.up, BFDState) + @unittest.skipUnless(running_extended_tests, "part of extended tests") def test_mismatch_auth(self): """ session is not brought down by unauthenticated msg """ key = self.factory.create_random_key(self) @@ -1201,6 +2067,7 @@ class BFDSHA1TestCase(VppTestCase): legitimate_test_session, rogue_test_session) + @unittest.skipUnless(running_extended_tests, "part of extended tests") def test_mismatch_bfd_key_id(self): """ session is not brought down by msg with non-existent key-id """ key = self.factory.create_random_key(self) @@ -1220,6 +2087,7 @@ class BFDSHA1TestCase(VppTestCase): legitimate_test_session, rogue_test_session) + @unittest.skipUnless(running_extended_tests, "part of extended tests") def test_mismatched_auth_type(self): """ session is not brought down by msg with wrong auth type """ key = self.factory.create_random_key(self) @@ -1236,6 +2104,7 @@ class BFDSHA1TestCase(VppTestCase): vpp_session, legitimate_test_session, rogue_test_session, {'auth_type': BFDAuthType.keyed_md5}) + @unittest.skipUnless(running_extended_tests, "part of extended tests") def test_restart(self): """ simulate remote peer restart and resynchronization """ key = self.factory.create_random_key( @@ -1244,15 +2113,14 @@ class BFDSHA1TestCase(VppTestCase): self.vpp_session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4, sha1_key=key) self.vpp_session.add_vpp_config() - self.vpp_session.admin_up() self.test_session = BFDTestSession( self, self.pg0, AF_INET, sha1_key=key, bfd_key_id=self.vpp_session.bfd_key_id, our_seq_number=0) bfd_session_up(self) # don't send any packets for 2*detection_time - detection_time = self.vpp_session.detect_mult *\ + detection_time = self.test_session.detect_mult *\ self.vpp_session.required_min_rx / USEC_IN_SEC - self.sleep(detection_time, "simulating peer restart") + self.sleep(2 * detection_time, "simulating peer restart") events = self.vapi.collect_events() self.assert_equal(len(events), 1, "number of bfd events") verify_event(self, events[0], expected_state=BFDState.down) @@ -1265,6 +2133,7 @@ class BFDSHA1TestCase(VppTestCase): bfd_session_up(self) +@unittest.skipUnless(running_extended_tests, "part of extended tests") class BFDAuthOnOffTestCase(VppTestCase): """Bidirectional Forwarding Detection (BFD) (changing auth) """ @@ -1275,6 +2144,7 @@ class BFDAuthOnOffTestCase(VppTestCase): @classmethod def setUpClass(cls): super(BFDAuthOnOffTestCase, cls).setUpClass() + cls.vapi.cli("set log class bfd level debug") try: cls.create_pg_interfaces([0]) cls.pg0.config_ip4() @@ -1285,6 +2155,10 @@ class BFDAuthOnOffTestCase(VppTestCase): super(BFDAuthOnOffTestCase, cls).tearDownClass() raise + @classmethod + def tearDownClass(cls): + super(BFDAuthOnOffTestCase, cls).tearDownClass() + def setUp(self): super(BFDAuthOnOffTestCase, self).setUp() self.factory = AuthKeyFactory() @@ -1293,7 +2167,7 @@ class BFDAuthOnOffTestCase(VppTestCase): def tearDown(self): if not self.vpp_dead: - self.vapi.want_bfd_events(enable_disable=0) + self.vapi.want_bfd_events(enable_disable=False) self.vapi.collect_events() # clear the event queue super(BFDAuthOnOffTestCase, self).tearDown() @@ -1304,7 +2178,6 @@ class BFDAuthOnOffTestCase(VppTestCase): self.vpp_session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4) self.vpp_session.add_vpp_config() - self.vpp_session.admin_up() self.test_session = BFDTestSession(self, self.pg0, AF_INET) bfd_session_up(self) for dummy in range(self.test_session.detect_mult * 2): @@ -1329,7 +2202,6 @@ class BFDAuthOnOffTestCase(VppTestCase): self.vpp_session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4, sha1_key=key) self.vpp_session.add_vpp_config() - self.vpp_session.admin_up() self.test_session = BFDTestSession( self, self.pg0, AF_INET, sha1_key=key, bfd_key_id=self.vpp_session.bfd_key_id) @@ -1361,7 +2233,6 @@ class BFDAuthOnOffTestCase(VppTestCase): self.vpp_session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4, sha1_key=key1) self.vpp_session.add_vpp_config() - self.vpp_session.admin_up() self.test_session = BFDTestSession( self, self.pg0, AF_INET, sha1_key=key1, bfd_key_id=self.vpp_session.bfd_key_id) @@ -1388,7 +2259,6 @@ class BFDAuthOnOffTestCase(VppTestCase): self.vpp_session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4) self.vpp_session.add_vpp_config() - self.vpp_session.admin_up() self.test_session = BFDTestSession(self, self.pg0, AF_INET) bfd_session_up(self) for dummy in range(self.test_session.detect_mult * 2): @@ -1417,7 +2287,6 @@ class BFDAuthOnOffTestCase(VppTestCase): self.vpp_session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4, sha1_key=key) self.vpp_session.add_vpp_config() - self.vpp_session.admin_up() self.test_session = BFDTestSession( self, self.pg0, AF_INET, sha1_key=key, bfd_key_id=self.vpp_session.bfd_key_id) @@ -1476,5 +2345,431 @@ class BFDAuthOnOffTestCase(VppTestCase): self.assert_equal(len(self.vapi.collect_events()), 0, "number of bfd events") + +@unittest.skipUnless(running_extended_tests, "part of extended tests") +class BFDCLITestCase(VppTestCase): + """Bidirectional Forwarding Detection (BFD) (CLI) """ + pg0 = None + + @classmethod + def setUpClass(cls): + super(BFDCLITestCase, cls).setUpClass() + cls.vapi.cli("set log class bfd level debug") + try: + cls.create_pg_interfaces((0,)) + cls.pg0.config_ip4() + cls.pg0.config_ip6() + cls.pg0.resolve_arp() + cls.pg0.resolve_ndp() + + except Exception: + super(BFDCLITestCase, cls).tearDownClass() + raise + + @classmethod + def tearDownClass(cls): + super(BFDCLITestCase, cls).tearDownClass() + + def setUp(self): + super(BFDCLITestCase, self).setUp() + self.factory = AuthKeyFactory() + self.pg0.enable_capture() + + def tearDown(self): + try: + self.vapi.want_bfd_events(enable_disable=False) + except UnexpectedApiReturnValueError: + # some tests aren't subscribed, so this is not an issue + pass + self.vapi.collect_events() # clear the event queue + super(BFDCLITestCase, self).tearDown() + + def cli_verify_no_response(self, cli): + """ execute a CLI, asserting that the response is empty """ + self.assert_equal(self.vapi.cli(cli), + b"", + "CLI command response") + + def cli_verify_response(self, cli, expected): + """ execute a CLI, asserting that the response matches expectation """ + try: + reply = self.vapi.cli(cli) + except CliFailedCommandError as cli_error: + reply = str(cli_error) + self.assert_equal(reply.strip(), + expected, + "CLI command response") + + def test_show(self): + """ show commands """ + k1 = self.factory.create_random_key(self) + k1.add_vpp_config() + k2 = self.factory.create_random_key( + self, auth_type=BFDAuthType.meticulous_keyed_sha1) + k2.add_vpp_config() + s1 = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4) + s1.add_vpp_config() + s2 = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip6, af=AF_INET6, + sha1_key=k2) + s2.add_vpp_config() + self.logger.info(self.vapi.ppcli("show bfd keys")) + self.logger.info(self.vapi.ppcli("show bfd sessions")) + self.logger.info(self.vapi.ppcli("show bfd")) + + def test_set_del_sha1_key(self): + """ set/delete SHA1 auth key """ + k = self.factory.create_random_key(self) + self.registry.register(k, self.logger) + self.cli_verify_no_response( + "bfd key set conf-key-id %s type keyed-sha1 secret %s" % + (k.conf_key_id, + "".join("{:02x}".format(scapy.compat.orb(c)) for c in k.key))) + self.assertTrue(k.query_vpp_config()) + self.vpp_session = VppBFDUDPSession( + self, self.pg0, self.pg0.remote_ip4, sha1_key=k) + self.vpp_session.add_vpp_config() + self.test_session = \ + BFDTestSession(self, self.pg0, AF_INET, sha1_key=k, + bfd_key_id=self.vpp_session.bfd_key_id) + self.vapi.want_bfd_events() + bfd_session_up(self) + bfd_session_down(self) + # try to replace the secret for the key - should fail because the key + # is in-use + k2 = self.factory.create_random_key(self) + self.cli_verify_response( + "bfd key set conf-key-id %s type keyed-sha1 secret %s" % + (k.conf_key_id, + "".join("{:02x}".format(scapy.compat.orb(c)) for c in k2.key)), + "bfd key set: `bfd_auth_set_key' API call failed, " + "rv=-103:BFD object in use") + # manipulating the session using old secret should still work + bfd_session_up(self) + bfd_session_down(self) + self.vpp_session.remove_vpp_config() + self.cli_verify_no_response( + "bfd key del conf-key-id %s" % k.conf_key_id) + self.assertFalse(k.query_vpp_config()) + + def test_set_del_meticulous_sha1_key(self): + """ set/delete meticulous SHA1 auth key """ + k = self.factory.create_random_key( + self, auth_type=BFDAuthType.meticulous_keyed_sha1) + self.registry.register(k, self.logger) + self.cli_verify_no_response( + "bfd key set conf-key-id %s type meticulous-keyed-sha1 secret %s" % + (k.conf_key_id, + "".join("{:02x}".format(scapy.compat.orb(c)) for c in k.key))) + self.assertTrue(k.query_vpp_config()) + self.vpp_session = VppBFDUDPSession(self, self.pg0, + self.pg0.remote_ip6, af=AF_INET6, + sha1_key=k) + self.vpp_session.add_vpp_config() + self.vpp_session.admin_up() + self.test_session = \ + BFDTestSession(self, self.pg0, AF_INET6, sha1_key=k, + bfd_key_id=self.vpp_session.bfd_key_id) + self.vapi.want_bfd_events() + bfd_session_up(self) + bfd_session_down(self) + # try to replace the secret for the key - should fail because the key + # is in-use + k2 = self.factory.create_random_key(self) + self.cli_verify_response( + "bfd key set conf-key-id %s type keyed-sha1 secret %s" % + (k.conf_key_id, + "".join("{:02x}".format(scapy.compat.orb(c)) for c in k2.key)), + "bfd key set: `bfd_auth_set_key' API call failed, " + "rv=-103:BFD object in use") + # manipulating the session using old secret should still work + bfd_session_up(self) + bfd_session_down(self) + self.vpp_session.remove_vpp_config() + self.cli_verify_no_response( + "bfd key del conf-key-id %s" % k.conf_key_id) + self.assertFalse(k.query_vpp_config()) + + def test_add_mod_del_bfd_udp(self): + """ create/modify/delete IPv4 BFD UDP session """ + vpp_session = VppBFDUDPSession( + self, self.pg0, self.pg0.remote_ip4) + self.registry.register(vpp_session, self.logger) + cli_add_cmd = "bfd udp session add interface %s local-addr %s " \ + "peer-addr %s desired-min-tx %s required-min-rx %s "\ + "detect-mult %s" % (self.pg0.name, self.pg0.local_ip4, + self.pg0.remote_ip4, + vpp_session.desired_min_tx, + vpp_session.required_min_rx, + vpp_session.detect_mult) + self.cli_verify_no_response(cli_add_cmd) + # 2nd add should fail + self.cli_verify_response( + cli_add_cmd, + "bfd udp session add: `bfd_add_add_session' API call" + " failed, rv=-101:Duplicate BFD object") + verify_bfd_session_config(self, vpp_session) + mod_session = VppBFDUDPSession( + self, self.pg0, self.pg0.remote_ip4, + required_min_rx=2 * vpp_session.required_min_rx, + desired_min_tx=3 * vpp_session.desired_min_tx, + detect_mult=4 * vpp_session.detect_mult) + self.cli_verify_no_response( + "bfd udp session mod interface %s local-addr %s peer-addr %s " + "desired-min-tx %s required-min-rx %s detect-mult %s" % + (self.pg0.name, self.pg0.local_ip4, self.pg0.remote_ip4, + mod_session.desired_min_tx, mod_session.required_min_rx, + mod_session.detect_mult)) + verify_bfd_session_config(self, mod_session) + cli_del_cmd = "bfd udp session del interface %s local-addr %s "\ + "peer-addr %s" % (self.pg0.name, + self.pg0.local_ip4, self.pg0.remote_ip4) + self.cli_verify_no_response(cli_del_cmd) + # 2nd del is expected to fail + self.cli_verify_response( + cli_del_cmd, "bfd udp session del: `bfd_udp_del_session' API call" + " failed, rv=-102:No such BFD object") + self.assertFalse(vpp_session.query_vpp_config()) + + def test_add_mod_del_bfd_udp6(self): + """ create/modify/delete IPv6 BFD UDP session """ + vpp_session = VppBFDUDPSession( + self, self.pg0, self.pg0.remote_ip6, af=AF_INET6) + self.registry.register(vpp_session, self.logger) + cli_add_cmd = "bfd udp session add interface %s local-addr %s " \ + "peer-addr %s desired-min-tx %s required-min-rx %s "\ + "detect-mult %s" % (self.pg0.name, self.pg0.local_ip6, + self.pg0.remote_ip6, + vpp_session.desired_min_tx, + vpp_session.required_min_rx, + vpp_session.detect_mult) + self.cli_verify_no_response(cli_add_cmd) + # 2nd add should fail + self.cli_verify_response( + cli_add_cmd, + "bfd udp session add: `bfd_add_add_session' API call" + " failed, rv=-101:Duplicate BFD object") + verify_bfd_session_config(self, vpp_session) + mod_session = VppBFDUDPSession( + self, self.pg0, self.pg0.remote_ip6, af=AF_INET6, + required_min_rx=2 * vpp_session.required_min_rx, + desired_min_tx=3 * vpp_session.desired_min_tx, + detect_mult=4 * vpp_session.detect_mult) + self.cli_verify_no_response( + "bfd udp session mod interface %s local-addr %s peer-addr %s " + "desired-min-tx %s required-min-rx %s detect-mult %s" % + (self.pg0.name, self.pg0.local_ip6, self.pg0.remote_ip6, + mod_session.desired_min_tx, + mod_session.required_min_rx, mod_session.detect_mult)) + verify_bfd_session_config(self, mod_session) + cli_del_cmd = "bfd udp session del interface %s local-addr %s "\ + "peer-addr %s" % (self.pg0.name, + self.pg0.local_ip6, self.pg0.remote_ip6) + self.cli_verify_no_response(cli_del_cmd) + # 2nd del is expected to fail + self.cli_verify_response( + cli_del_cmd, + "bfd udp session del: `bfd_udp_del_session' API call" + " failed, rv=-102:No such BFD object") + self.assertFalse(vpp_session.query_vpp_config()) + + def test_add_mod_del_bfd_udp_auth(self): + """ create/modify/delete IPv4 BFD UDP session (authenticated) """ + key = self.factory.create_random_key(self) + key.add_vpp_config() + vpp_session = VppBFDUDPSession( + self, self.pg0, self.pg0.remote_ip4, sha1_key=key) + self.registry.register(vpp_session, self.logger) + cli_add_cmd = "bfd udp session add interface %s local-addr %s " \ + "peer-addr %s desired-min-tx %s required-min-rx %s "\ + "detect-mult %s conf-key-id %s bfd-key-id %s"\ + % (self.pg0.name, self.pg0.local_ip4, self.pg0.remote_ip4, + vpp_session.desired_min_tx, vpp_session.required_min_rx, + vpp_session.detect_mult, key.conf_key_id, + vpp_session.bfd_key_id) + self.cli_verify_no_response(cli_add_cmd) + # 2nd add should fail + self.cli_verify_response( + cli_add_cmd, + "bfd udp session add: `bfd_add_add_session' API call" + " failed, rv=-101:Duplicate BFD object") + verify_bfd_session_config(self, vpp_session) + mod_session = VppBFDUDPSession( + self, self.pg0, self.pg0.remote_ip4, sha1_key=key, + bfd_key_id=vpp_session.bfd_key_id, + required_min_rx=2 * vpp_session.required_min_rx, + desired_min_tx=3 * vpp_session.desired_min_tx, + detect_mult=4 * vpp_session.detect_mult) + self.cli_verify_no_response( + "bfd udp session mod interface %s local-addr %s peer-addr %s " + "desired-min-tx %s required-min-rx %s detect-mult %s" % + (self.pg0.name, self.pg0.local_ip4, self.pg0.remote_ip4, + mod_session.desired_min_tx, + mod_session.required_min_rx, mod_session.detect_mult)) + verify_bfd_session_config(self, mod_session) + cli_del_cmd = "bfd udp session del interface %s local-addr %s "\ + "peer-addr %s" % (self.pg0.name, + self.pg0.local_ip4, self.pg0.remote_ip4) + self.cli_verify_no_response(cli_del_cmd) + # 2nd del is expected to fail + self.cli_verify_response( + cli_del_cmd, + "bfd udp session del: `bfd_udp_del_session' API call" + " failed, rv=-102:No such BFD object") + self.assertFalse(vpp_session.query_vpp_config()) + + def test_add_mod_del_bfd_udp6_auth(self): + """ create/modify/delete IPv6 BFD UDP session (authenticated) """ + key = self.factory.create_random_key( + self, auth_type=BFDAuthType.meticulous_keyed_sha1) + key.add_vpp_config() + vpp_session = VppBFDUDPSession( + self, self.pg0, self.pg0.remote_ip6, af=AF_INET6, sha1_key=key) + self.registry.register(vpp_session, self.logger) + cli_add_cmd = "bfd udp session add interface %s local-addr %s " \ + "peer-addr %s desired-min-tx %s required-min-rx %s "\ + "detect-mult %s conf-key-id %s bfd-key-id %s" \ + % (self.pg0.name, self.pg0.local_ip6, self.pg0.remote_ip6, + vpp_session.desired_min_tx, vpp_session.required_min_rx, + vpp_session.detect_mult, key.conf_key_id, + vpp_session.bfd_key_id) + self.cli_verify_no_response(cli_add_cmd) + # 2nd add should fail + self.cli_verify_response( + cli_add_cmd, + "bfd udp session add: `bfd_add_add_session' API call" + " failed, rv=-101:Duplicate BFD object") + verify_bfd_session_config(self, vpp_session) + mod_session = VppBFDUDPSession( + self, self.pg0, self.pg0.remote_ip6, af=AF_INET6, sha1_key=key, + bfd_key_id=vpp_session.bfd_key_id, + required_min_rx=2 * vpp_session.required_min_rx, + desired_min_tx=3 * vpp_session.desired_min_tx, + detect_mult=4 * vpp_session.detect_mult) + self.cli_verify_no_response( + "bfd udp session mod interface %s local-addr %s peer-addr %s " + "desired-min-tx %s required-min-rx %s detect-mult %s" % + (self.pg0.name, self.pg0.local_ip6, self.pg0.remote_ip6, + mod_session.desired_min_tx, + mod_session.required_min_rx, mod_session.detect_mult)) + verify_bfd_session_config(self, mod_session) + cli_del_cmd = "bfd udp session del interface %s local-addr %s "\ + "peer-addr %s" % (self.pg0.name, + self.pg0.local_ip6, self.pg0.remote_ip6) + self.cli_verify_no_response(cli_del_cmd) + # 2nd del is expected to fail + self.cli_verify_response( + cli_del_cmd, + "bfd udp session del: `bfd_udp_del_session' API call" + " failed, rv=-102:No such BFD object") + self.assertFalse(vpp_session.query_vpp_config()) + + def test_auth_on_off(self): + """ turn authentication on and off """ + key = self.factory.create_random_key( + self, auth_type=BFDAuthType.meticulous_keyed_sha1) + key.add_vpp_config() + session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4) + auth_session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4, + sha1_key=key) + session.add_vpp_config() + cli_activate = \ + "bfd udp session auth activate interface %s local-addr %s "\ + "peer-addr %s conf-key-id %s bfd-key-id %s"\ + % (self.pg0.name, self.pg0.local_ip4, self.pg0.remote_ip4, + key.conf_key_id, auth_session.bfd_key_id) + self.cli_verify_no_response(cli_activate) + verify_bfd_session_config(self, auth_session) + self.cli_verify_no_response(cli_activate) + verify_bfd_session_config(self, auth_session) + cli_deactivate = \ + "bfd udp session auth deactivate interface %s local-addr %s "\ + "peer-addr %s "\ + % (self.pg0.name, self.pg0.local_ip4, self.pg0.remote_ip4) + self.cli_verify_no_response(cli_deactivate) + verify_bfd_session_config(self, session) + self.cli_verify_no_response(cli_deactivate) + verify_bfd_session_config(self, session) + + def test_auth_on_off_delayed(self): + """ turn authentication on and off (delayed) """ + key = self.factory.create_random_key( + self, auth_type=BFDAuthType.meticulous_keyed_sha1) + key.add_vpp_config() + session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4) + auth_session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4, + sha1_key=key) + session.add_vpp_config() + cli_activate = \ + "bfd udp session auth activate interface %s local-addr %s "\ + "peer-addr %s conf-key-id %s bfd-key-id %s delayed yes"\ + % (self.pg0.name, self.pg0.local_ip4, self.pg0.remote_ip4, + key.conf_key_id, auth_session.bfd_key_id) + self.cli_verify_no_response(cli_activate) + verify_bfd_session_config(self, auth_session) + self.cli_verify_no_response(cli_activate) + verify_bfd_session_config(self, auth_session) + cli_deactivate = \ + "bfd udp session auth deactivate interface %s local-addr %s "\ + "peer-addr %s delayed yes"\ + % (self.pg0.name, self.pg0.local_ip4, self.pg0.remote_ip4) + self.cli_verify_no_response(cli_deactivate) + verify_bfd_session_config(self, session) + self.cli_verify_no_response(cli_deactivate) + verify_bfd_session_config(self, session) + + def test_admin_up_down(self): + """ put session admin-up and admin-down """ + session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4) + session.add_vpp_config() + cli_down = \ + "bfd udp session set-flags admin down interface %s local-addr %s "\ + "peer-addr %s "\ + % (self.pg0.name, self.pg0.local_ip4, self.pg0.remote_ip4) + cli_up = \ + "bfd udp session set-flags admin up interface %s local-addr %s "\ + "peer-addr %s "\ + % (self.pg0.name, self.pg0.local_ip4, self.pg0.remote_ip4) + self.cli_verify_no_response(cli_down) + verify_bfd_session_config(self, session, state=BFDState.admin_down) + self.cli_verify_no_response(cli_up) + verify_bfd_session_config(self, session, state=BFDState.down) + + def test_set_del_udp_echo_source(self): + """ set/del udp echo source """ + self.create_loopback_interfaces(1) + self.loopback0 = self.lo_interfaces[0] + self.loopback0.admin_up() + self.cli_verify_response("show bfd echo-source", + "UDP echo source is not set.") + cli_set = "bfd udp echo-source set interface %s" % self.loopback0.name + self.cli_verify_no_response(cli_set) + self.cli_verify_response("show bfd echo-source", + "UDP echo source is: %s\n" + "IPv4 address usable as echo source: none\n" + "IPv6 address usable as echo source: none" % + self.loopback0.name) + self.loopback0.config_ip4() + unpacked = unpack("!L", self.loopback0.local_ip4n) + echo_ip4 = inet_ntop(AF_INET, pack("!L", unpacked[0] ^ 1)) + self.cli_verify_response("show bfd echo-source", + "UDP echo source is: %s\n" + "IPv4 address usable as echo source: %s\n" + "IPv6 address usable as echo source: none" % + (self.loopback0.name, echo_ip4)) + unpacked = unpack("!LLLL", self.loopback0.local_ip6n) + echo_ip6 = inet_ntop(AF_INET6, pack("!LLLL", unpacked[0], unpacked[1], + unpacked[2], unpacked[3] ^ 1)) + self.loopback0.config_ip6() + self.cli_verify_response("show bfd echo-source", + "UDP echo source is: %s\n" + "IPv4 address usable as echo source: %s\n" + "IPv6 address usable as echo source: %s" % + (self.loopback0.name, echo_ip4, echo_ip6)) + cli_del = "bfd udp echo-source del" + self.cli_verify_no_response(cli_del) + self.cli_verify_response("show bfd echo-source", + "UDP echo source is not set.") + + if __name__ == '__main__': unittest.main(testRunner=VppTestRunner)