+++ /dev/null
-#!/usr/bin/env python3
-""" BFD tests """
-
-from __future__ import division
-
-import binascii
-import hashlib
-import ipaddress
-import reprlib
-import time
-import unittest
-from random import randint, shuffle, getrandbits
-from socket import AF_INET, AF_INET6, inet_ntop
-from struct import pack, unpack
-
-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, BFD_vpp_echo
-from framework import tag_fixme_vpp_workers
-from framework import VppTestCase, VppTestRunner, running_extended_tests
-from framework import tag_run_solo
-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
-
-
-class AuthKeyFactory(object):
- """Factory class for creating auth keys with unique conf key ID"""
-
- def __init__(self):
- self._conf_key_ids = {}
-
- def create_random_key(self, test, auth_type=BFDAuthType.keyed_sha1):
- """ create a random key with unique conf key id """
- conf_key_id = randint(0, 0xFFFFFFFF)
- while conf_key_id in self._conf_key_ids:
- conf_key_id = randint(0, 0xFFFFFFFF)
- self._conf_key_ids[conf_key_id] = 1
- 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)
-
-
-class BFDAPITestCase(VppTestCase):
- """Bidirectional Forwarding Detection (BFD) - API"""
-
- pg0 = None
- pg1 = None
-
- @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:
- i.config_ip4()
- i.config_ip6()
- i.resolve_arp()
-
- except Exception:
- super(BFDAPITestCase, cls).tearDownClass()
- raise
-
- @classmethod
- def tearDownClass(cls):
- super(BFDAPITestCase, cls).tearDownClass()
-
- def setUp(self):
- super(BFDAPITestCase, self).setUp()
- self.factory = AuthKeyFactory()
-
- def test_add_bfd(self):
- """ create a BFD session """
- session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4)
- session.add_vpp_config()
- self.logger.debug("Session state is %s", session.state)
- session.remove_vpp_config()
- session.add_vpp_config()
- self.logger.debug("Session state is %s", session.state)
- session.remove_vpp_config()
-
- def test_double_add(self):
- """ create the same BFD session twice (negative case) """
- session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4)
- session.add_vpp_config()
-
- with self.vapi.assert_negative_api_retval():
- session.add_vpp_config()
-
- session.remove_vpp_config()
-
- def test_add_bfd6(self):
- """ create IPv6 BFD session """
- session = VppBFDUDPSession(
- self, self.pg0, self.pg0.remote_ip6, af=AF_INET6)
- session.add_vpp_config()
- self.logger.debug("Session state is %s", session.state)
- session.remove_vpp_config()
- session.add_vpp_config()
- self.logger.debug("Session state is %s", session.state)
- session.remove_vpp_config()
-
- def test_mod_bfd(self):
- """ modify BFD session parameters """
- session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4,
- desired_min_tx=50000,
- required_min_rx=10000,
- detect_mult=1)
- session.add_vpp_config()
- s = session.get_bfd_udp_session_dump_entry()
- self.assert_equal(session.desired_min_tx,
- s.desired_min_tx,
- "desired min transmit interval")
- self.assert_equal(session.required_min_rx,
- s.required_min_rx,
- "required min receive interval")
- self.assert_equal(session.detect_mult, s.detect_mult, "detect mult")
- session.modify_parameters(desired_min_tx=session.desired_min_tx * 2,
- required_min_rx=session.required_min_rx * 2,
- detect_mult=session.detect_mult * 2)
- s = session.get_bfd_udp_session_dump_entry()
- self.assert_equal(session.desired_min_tx,
- s.desired_min_tx,
- "desired min transmit interval")
- self.assert_equal(session.required_min_rx,
- s.required_min_rx,
- "required min receive interval")
- self.assert_equal(session.detect_mult, s.detect_mult, "detect mult")
-
- def test_add_sha1_keys(self):
- """ add SHA1 keys """
- key_count = 10
- keys = [self.factory.create_random_key(
- self) for i in range(0, key_count)]
- for key in keys:
- self.assertFalse(key.query_vpp_config())
- for key in keys:
- key.add_vpp_config()
- for key in keys:
- self.assertTrue(key.query_vpp_config())
- # remove randomly
- indexes = list(range(key_count))
- shuffle(indexes)
- removed = []
- for i in indexes:
- key = keys[i]
- key.remove_vpp_config()
- removed.append(i)
- for j in range(key_count):
- key = keys[j]
- if j in removed:
- self.assertFalse(key.query_vpp_config())
- else:
- self.assertTrue(key.query_vpp_config())
- # should be removed now
- for key in keys:
- self.assertFalse(key.query_vpp_config())
- # add back and remove again
- for key in keys:
- key.add_vpp_config()
- for key in keys:
- self.assertTrue(key.query_vpp_config())
- for key in keys:
- key.remove_vpp_config()
- for key in keys:
- self.assertFalse(key.query_vpp_config())
-
- def test_add_bfd_sha1(self):
- """ create a BFD session (SHA1) """
- key = self.factory.create_random_key(self)
- key.add_vpp_config()
- session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4,
- sha1_key=key)
- session.add_vpp_config()
- self.logger.debug("Session state is %s", session.state)
- session.remove_vpp_config()
- session.add_vpp_config()
- self.logger.debug("Session state is %s", session.state)
- session.remove_vpp_config()
-
- def test_double_add_sha1(self):
- """ create the same BFD session twice (negative case) (SHA1) """
- key = self.factory.create_random_key(self)
- key.add_vpp_config()
- session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4,
- sha1_key=key)
- session.add_vpp_config()
- with self.assertRaises(Exception):
- session.add_vpp_config()
-
- def test_add_auth_nonexistent_key(self):
- """ create BFD session using non-existent SHA1 (negative case) """
- session = VppBFDUDPSession(
- self, self.pg0, self.pg0.remote_ip4,
- sha1_key=self.factory.create_random_key(self))
- with self.assertRaises(Exception):
- session.add_vpp_config()
-
- def test_shared_sha1_key(self):
- """ share single SHA1 key between multiple BFD sessions """
- key = self.factory.create_random_key(self)
- key.add_vpp_config()
- sessions = [
- VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4,
- sha1_key=key),
- VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip6,
- sha1_key=key, af=AF_INET6),
- VppBFDUDPSession(self, self.pg1, self.pg1.remote_ip4,
- sha1_key=key),
- VppBFDUDPSession(self, self.pg1, self.pg1.remote_ip6,
- sha1_key=key, af=AF_INET6)]
- for s in sessions:
- s.add_vpp_config()
- removed = 0
- for s in sessions:
- e = key.get_bfd_auth_keys_dump_entry()
- self.assert_equal(e.use_count, len(sessions) - removed,
- "Use count for shared key")
- s.remove_vpp_config()
- removed += 1
- e = key.get_bfd_auth_keys_dump_entry()
- self.assert_equal(e.use_count, len(sessions) - removed,
- "Use count for shared key")
-
- def test_activate_auth(self):
- """ activate SHA1 authentication """
- key = self.factory.create_random_key(self)
- key.add_vpp_config()
- session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4)
- session.add_vpp_config()
- session.activate_auth(key)
-
- def test_deactivate_auth(self):
- """ deactivate SHA1 authentication """
- key = self.factory.create_random_key(self)
- key.add_vpp_config()
- session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4)
- session.add_vpp_config()
- session.activate_auth(key)
- session.deactivate_auth()
-
- def test_change_key(self):
- """ change SHA1 key """
- key1 = self.factory.create_random_key(self)
- key2 = self.factory.create_random_key(self)
- while key2.conf_key_id == key1.conf_key_id:
- key2 = self.factory.create_random_key(self)
- key1.add_vpp_config()
- key2.add_vpp_config()
- session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4,
- sha1_key=key1)
- 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()
- echo_ip4 = ipaddress.IPv4Address(int(ipaddress.IPv4Address(
- self.loopback0.local_ip4)) ^ 1).packed
- 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()
- echo_ip6 = ipaddress.IPv6Address(int(ipaddress.IPv6Address(
- self.loopback0.local_ip6)) ^ 1).packed
-
- 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,
- 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)
- else:
- self.our_seq_number = our_seq_number
- self.vpp_seq_number = None
- self.my_discriminator = 0
- 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 """
- if self.our_seq_number == 0xFFFFFFFF:
- self.our_seq_number = 0
- else:
- self.our_seq_number += 1
-
- def update(self, my_discriminator=None, your_discriminator=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 is not None:
- self.my_discriminator = my_discriminator
- if your_discriminator is not None:
- self.your_discriminator = your_discriminator
- if required_min_rx is not None:
- self.required_min_rx = required_min_rx
- 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 is not None:
- self.detect_mult = detect_mult
- if diag is not None:
- self.diag = diag
- if state is not None:
- self.state = state
- if auth_type is not None:
- self.auth_type = auth_type
-
- def fill_packet_fields(self, packet):
- """ set packet fields with known values in packet """
- bfd = packet[BFD]
- if self.my_discriminator:
- self.test.logger.debug("BFD: setting packet.my_discriminator=%s",
- self.my_discriminator)
- bfd.my_discriminator = self.my_discriminator
- if self.your_discriminator:
- self.test.logger.debug("BFD: setting packet.your_discriminator=%s",
- self.your_discriminator)
- bfd.your_discriminator = self.your_discriminator
- if self.required_min_rx:
- self.test.logger.debug(
- "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",
- self.desired_min_tx)
- bfd.desired_min_tx_interval = self.desired_min_tx
- if self.detect_mult:
- self.test.logger.debug(
- "BFD: setting packet.detect_mult=%s", self.detect_mult)
- bfd.detect_mult = self.detect_mult
- if self.diag:
- self.test.logger.debug("BFD: setting packet.diag=%s", self.diag)
- bfd.diag = self.diag
- if self.state:
- self.test.logger.debug("BFD: setting packet.state=%s", self.state)
- bfd.state = self.state
- if self.auth_type:
- # this is used by a negative test-case
- self.test.logger.debug("BFD: setting packet.auth_type=%s",
- self.auth_type)
- bfd.auth_type = self.auth_type
-
- def create_packet(self):
- """ create a BFD packet, reflecting the current state of session """
- if self.sha1_key:
- bfd = BFD(flags="A")
- bfd.auth_type = self.sha1_key.auth_type
- bfd.auth_len = BFD.sha1_auth_len
- bfd.auth_key_id = self.bfd_key_id
- bfd.auth_seq_num = self.our_seq_number
- 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 = (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 = (packet /
- IP(src=self.interface.remote_ip4,
- dst=self.interface.local_ip4,
- ttl=255) /
- UDP(sport=self.udp_sport, dport=BFD.udp_dport) /
- bfd)
- self.test.logger.debug("BFD: Creating packet")
- self.fill_packet_fields(packet)
- if self.sha1_key:
- hash_material = scapy.compat.raw(
- packet[BFD])[:32] + self.sha1_key.key + \
- b"\0" * (20 - len(self.sha1_key.key))
- self.test.logger.debug("BFD: Calculated SHA1 hash: %s" %
- hashlib.sha1(hash_material).hexdigest())
- packet[BFD].auth_key_hash = hashlib.sha1(hash_material).digest()
- return packet
-
- def send_packet(self, packet=None, interface=None):
- """ send packet on interface, creating the packet if needed """
- if packet is None:
- packet = self.create_packet()
- if interface is None:
- interface = self.phy_interface
- self.test.logger.debug(ppp("Sending packet:", packet))
- interface.add_stream(packet)
- self.test.pg_start()
-
- def verify_sha1_auth(self, packet):
- """ Verify correctness of authentication in BFD layer. """
- bfd = packet[BFD]
- self.test.assert_equal(bfd.auth_len, 28, "Auth section length")
- self.test.assert_equal(bfd.auth_type, self.sha1_key.auth_type,
- BFDAuthType)
- self.test.assert_equal(bfd.auth_key_id, self.bfd_key_id, "Key ID")
- self.test.assert_equal(bfd.auth_reserved, 0, "Reserved")
- if self.vpp_seq_number is None:
- self.vpp_seq_number = bfd.auth_seq_num
- self.test.logger.debug("Received initial sequence number: %s" %
- self.vpp_seq_number)
- else:
- recvd_seq_num = bfd.auth_seq_num
- self.test.logger.debug("Received followup sequence number: %s" %
- recvd_seq_num)
- if self.vpp_seq_number < 0xffffffff:
- if self.sha1_key.auth_type == \
- BFDAuthType.meticulous_keyed_sha1:
- self.test.assert_equal(recvd_seq_num,
- self.vpp_seq_number + 1,
- "BFD sequence number")
- else:
- self.test.assert_in_range(recvd_seq_num,
- self.vpp_seq_number,
- self.vpp_seq_number + 1,
- "BFD sequence number")
- else:
- if self.sha1_key.auth_type == \
- BFDAuthType.meticulous_keyed_sha1:
- self.test.assert_equal(recvd_seq_num, 0,
- "BFD sequence number")
- else:
- self.test.assertIn(recvd_seq_num, (self.vpp_seq_number, 0),
- "BFD sequence number not one of "
- "(%s, 0)" % self.vpp_seq_number)
- self.vpp_seq_number = recvd_seq_num
- # 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 + \
- 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.encode(), "Auth key hash")
-
- def verify_bfd(self, packet):
- """ Verify correctness of BFD layer. """
- bfd = packet[BFD]
- self.test.assert_equal(bfd.version, 1, "BFD version")
- self.test.assert_equal(bfd.your_discriminator,
- self.my_discriminator,
- "BFD - your discriminator")
- if self.sha1_key:
- self.verify_sha1_auth(packet)
-
-
-def bfd_session_up(test):
- """ Bring BFD session up """
- test.logger.info("BFD: Waiting for slow hello")
- 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
- test.vpp_clock_offset = time.time() - float(p.time)
- test.logger.debug("BFD: Calculated vpp clock offset: %s",
- test.vpp_clock_offset)
- if old_offset:
- test.assertAlmostEqual(
- 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_event")
- 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)
-
-
-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_event")
- verify_event(test, e, expected_state=BFDState.down)
- test.logger.info("BFD: Session is Down")
- 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.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.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")
-
-
-def verify_udp(test, packet):
- """ Verify correctness of UDP layer. """
- udp = packet[UDP]
- test.assert_equal(udp.dport, BFD.udp_dport, "UDP destination port")
- test.assert_in_range(udp.sport, BFD.udp_sport_min, BFD.udp_sport_max,
- "UDP source port")
-
-
-def verify_event(test, event, expected_state):
- """ Verify correctness of event values. """
- e = event
- test.logger.debug("BFD: Event: %s" % reprlib.repr(e))
- test.assert_equal(e.sw_if_index,
- test.vpp_session.interface.sw_if_index,
- "BFD interface index")
-
- 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, is_tunnel=False):
- """ wait for BFD packet and verify its correctness
-
- :param timeout: how long to wait
- :param pcap_time_min: ignore packets with pcap timestamp lower than this
-
- :returns: tuple (packet, time spent waiting for packet)
- """
- test.logger.info("BFD: Waiting for BFD packet")
- deadline = time.time() + timeout
- counter = 0
- while True:
- counter += 1
- # sanity check
- test.assert_in_range(counter, 0, 100, "number of packets ignored")
- time_left = deadline - time.time()
- if time_left < 0:
- raise CaptureTimeoutError("Packet did not arrive within timeout")
- p = test.pg0.wait_for_packet(timeout=time_left)
- test.logger.debug(ppp("BFD: Got packet:", p))
- if pcap_time_min is not None and p.time < pcap_time_min:
- test.logger.debug(ppp("BFD: ignoring packet (pcap time %s < "
- "pcap time min %s):" %
- (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))
- if bfd.payload:
- raise Exception(ppp("Unexpected payload in BFD packet:", bfd))
- verify_ip(test, p)
- verify_udp(test, p)
- test.test_session.verify_bfd(p)
- return p
-
-
-@tag_run_solo
-class BFD4TestCase(VppTestCase):
- """Bidirectional Forwarding Detection (BFD)"""
-
- pg0 = None
- vpp_clock_offset = None
- vpp_session = None
- test_session = None
-
- @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()
- cls.pg0.resolve_arp()
-
- except Exception:
- super(BFD4TestCase, cls).tearDownClass()
- raise
-
- @classmethod
- def tearDownClass(cls):
- super(BFD4TestCase, cls).tearDownClass()
-
- def setUp(self):
- super(BFD4TestCase, self).setUp()
- self.factory = AuthKeyFactory()
- self.vapi.want_bfd_events()
- self.pg0.enable_capture()
- try:
- 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)
- except BaseException:
- self.vapi.want_bfd_events(enable_disable=0)
- raise
-
- def tearDown(self):
- if not self.vpp_dead:
- self.vapi.want_bfd_events(enable_disable=0)
- self.vapi.collect_events() # clear the event queue
- super(BFD4TestCase, self).tearDown()
-
- def test_session_up(self):
- """ 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_event")
- 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_event")
- 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)
-
- def test_hold_up(self):
- """ hold BFD session up """
- bfd_session_up(self)
- for dummy in range(self.test_session.detect_mult * 2):
- wait_for_bfd_packet(self)
- self.test_session.send_packet()
- self.assert_equal(len(self.vapi.collect_events()), 0,
- "number of bfd events")
-
- def test_slow_timer(self):
- """ verify slow periodic control frames while session down """
- packet_count = 3
- self.logger.info("BFD: Waiting for %d BFD packets", packet_count)
- prev_packet = wait_for_bfd_packet(self, 2)
- for dummy in range(packet_count):
- next_packet = wait_for_bfd_packet(self, 2)
- time_diff = next_packet.time - prev_packet.time
- # spec says the range should be <0.75, 1>, allow extra 0.05 margin
- # to work around timing issues
- self.assert_in_range(
- time_diff, 0.70, 1.05, "time between slow packets")
- prev_packet = next_packet
-
- 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()
- 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)
- self.logger.error(ppp("Received unexpected packet:", p))
- except CaptureTimeoutError:
- pass
- 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")
-
- def test_conn_down(self):
- """ verify session goes down after inactivity """
- bfd_session_up(self)
- 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_event")
- verify_event(self, e, expected_state=BFDState.down)
-
- def test_peer_discr_reset_sess_down(self):
- """ peer discriminator reset after session goes down """
- bfd_session_up(self)
- 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")
- self.test_session.my_discriminator = 0
- wait_for_bfd_packet(self,
- pcap_time_min=time.time() - self.vpp_clock_offset)
-
- def test_large_required_min_rx(self):
- """ large remote required min rx interval """
- bfd_session_up(self)
- p = wait_for_bfd_packet(self)
- interval = 3000000
- self.test_session.update(required_min_rx=interval)
- self.test_session.send_packet()
- 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 + interval / USEC_IN_SEC:
- try:
- p = wait_for_bfd_packet(self, timeout=0)
- # if vpp managed to send a packet before we did the session
- # session update, then that's fine, ignore it
- if p.time < time_mark - self.vpp_clock_offset:
- continue
- 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")
-
- def test_immediate_remote_min_rx_reduction(self):
- """ immediately honor remote required min rx reduction """
- self.vpp_session.remove_vpp_config()
- self.vpp_session = VppBFDUDPSession(
- self, self.pg0, self.pg0.remote_ip4, desired_min_tx=10000)
- self.pg0.enable_capture()
- self.vpp_session.add_vpp_config()
- self.test_session.update(desired_min_tx=1000000,
- required_min_rx=1000000)
- bfd_session_up(self)
- reference_packet = wait_for_bfd_packet(self)
- time_mark = time.time()
- interval = 300000
- self.test_session.update(required_min_rx=interval)
- self.test_session.send_packet()
- extra_time = time.time() - time_mark
- p = wait_for_bfd_packet(self)
- # first packet is allowed to be late by time we spent doing the update
- # calculated in extra_time
- self.assert_in_range(p.time - reference_packet.time,
- .95 * 0.75 * interval / USEC_IN_SEC,
- 1.05 * interval / USEC_IN_SEC + extra_time,
- "time between BFD packets")
- reference_packet = p
- for dummy in range(3):
- p = wait_for_bfd_packet(self)
- diff = p.time - reference_packet.time
- self.assert_in_range(diff, .95 * .75 * interval / USEC_IN_SEC,
- 1.05 * interval / USEC_IN_SEC,
- "time between BFD packets")
- reference_packet = p
-
- def test_modify_req_min_rx_double(self):
- """ modify session - double required min rx """
- bfd_session_up(self)
- p = wait_for_bfd_packet(self)
- self.test_session.update(desired_min_tx=10000,
- required_min_rx=10000)
- self.test_session.send_packet()
- # double required min rx
- 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 needs to be set
- self.assertIn("P", p.sprintf("%BFD.flags%"),
- "Poll bit not set in BFD packet")
- # finish poll sequence with final packet
- final = self.test_session.create_packet()
- final[BFD].flags = "F"
- timeout = self.test_session.detect_mult * \
- max(self.test_session.desired_min_tx,
- self.vpp_session.required_min_rx) / USEC_IN_SEC
- self.test_session.send_packet(final)
- time_mark = time.time()
- e = self.vapi.wait_for_event(2 * timeout, "bfd_udp_session_event")
- verify_event(self, e, expected_state=BFDState.down)
- time_to_event = time.time() - time_mark
- self.assert_in_range(time_to_event, .9 * timeout,
- 1.1 * timeout, "session timeout")
-
- def test_modify_req_min_rx_halve(self):
- """ modify session - halve required min rx """
- self.vpp_session.modify_parameters(
- required_min_rx=2 * self.vpp_session.required_min_rx)
- bfd_session_up(self)
- p = wait_for_bfd_packet(self)
- self.test_session.update(desired_min_tx=10000,
- required_min_rx=10000)
- self.test_session.send_packet()
- p = wait_for_bfd_packet(
- self, pcap_time_min=time.time() - self.vpp_clock_offset)
- # halve required min rx
- old_required_min_rx = self.vpp_session.required_min_rx
- self.vpp_session.modify_parameters(
- 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,
- "wait before finishing poll sequence")
- self.assert_equal(len(self.vapi.collect_events()), 0,
- "number of bfd events")
- p = wait_for_bfd_packet(self)
- # poll bit needs to be set
- self.assertIn("P", p.sprintf("%BFD.flags%"),
- "Poll bit not set in BFD packet")
- # finish poll sequence with final packet
- final = self.test_session.create_packet()
- 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(
- 2 * detection_time, "bfd_udp_session_event")
- after = time.time()
- 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)
-
- def test_modify_detect_mult(self):
- """ modify detect multiplier """
- bfd_session_up(self)
- p = wait_for_bfd_packet(self)
- self.vpp_session.modify_parameters(detect_mult=1)
- p = wait_for_bfd_packet(
- self, pcap_time_min=time.time() - self.vpp_clock_offset)
- self.assert_equal(self.vpp_session.detect_mult,
- p[BFD].detect_mult,
- "detect mult")
- # poll bit must not be set
- self.assertNotIn("P", p.sprintf("%BFD.flags%"),
- "Poll bit not set in BFD packet")
- self.vpp_session.modify_parameters(detect_mult=10)
- p = wait_for_bfd_packet(
- self, pcap_time_min=time.time() - self.vpp_clock_offset)
- self.assert_equal(self.vpp_session.detect_mult,
- p[BFD].detect_mult,
- "detect mult")
- # poll bit must not be set
- self.assertNotIn("P", p.sprintf("%BFD.flags%"),
- "Poll bit not set in BFD packet")
-
- 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")
-
- # returning inconsistent results requiring retries in per-patch tests
- @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%"))
-
- def test_no_periodic_if_remote_demand(self):
- """ no periodic frames outside poll sequence if remote demand set """
- bfd_session_up(self)
- demand = self.test_session.create_packet()
- demand[BFD].flags = "D"
- self.test_session.send_packet(demand)
- 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_echo_looped_back(self):
- """ echo packets looped back """
- # don't need a session in this case..
- self.vpp_session.remove_vpp_config()
- self.pg0.enable_capture()
- echo_packet_count = 10
- # random source port low enough to increment a few times..
- udp_sport_tx = randint(1, 50000)
- udp_sport_rx = udp_sport_tx
- echo_packet = (Ether(src=self.pg0.remote_mac,
- dst=self.pg0.local_mac) /
- IP(src=self.pg0.remote_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):
- self.sleep(.01, "delay between echo packets")
- echo_packet[UDP].sport = udp_sport_tx
- udp_sport_tx += 1
- self.logger.debug(ppp("Sending packet:", echo_packet))
- self.pg0.add_stream(echo_packet)
- self.pg_start()
- for dummy in range(echo_packet_count):
- p = self.pg0.wait_for_packet(1)
- self.logger.debug(ppp("Got packet:", p))
- ether = p[Ether]
- self.assert_equal(self.pg0.remote_mac,
- ether.dst, "Destination MAC")
- 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.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
- # 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")
-
- 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")
-
- 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")
-
- 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")
-
- 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")
-
- 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")
-
- 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()
- e = self.vapi.wait_for_event(1, "bfd_udp_session_event")
- verify_event(self, e, expected_state=BFDState.admin_down)
- for dummy in range(2):
- p = wait_for_bfd_packet(self)
- 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(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_event")
- verify_event(self, e, expected_state=BFDState.down)
- 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, 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_event")
- 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, 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_event")
- verify_event(self, e, expected_state=BFDState.up)
-
- 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_event")
- self.assert_equal(e.sw_if_index, sw_if_index, "sw_if_index")
- self.assertFalse(vpp_session.query_vpp_config())
-
-
-@tag_run_solo
-@tag_fixme_vpp_workers
-class BFD6TestCase(VppTestCase):
- """Bidirectional Forwarding Detection (BFD) (IPv6) """
-
- pg0 = None
- vpp_clock_offset = None
- vpp_session = None
- test_session = None
-
- @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()
- self.vapi.want_bfd_events()
- self.pg0.enable_capture()
- try:
- 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)
- self.logger.debug(self.vapi.cli("show adj nbr"))
- except BaseException:
- self.vapi.want_bfd_events(enable_disable=0)
- raise
-
- def tearDown(self):
- if not self.vpp_dead:
- self.vapi.want_bfd_events(enable_disable=0)
- self.vapi.collect_events() # clear the event queue
- super(BFD6TestCase, self).tearDown()
-
- def test_session_up(self):
- """ 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_event")
- 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_event")
- 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_hold_up(self):
- """ hold BFD session up """
- bfd_session_up(self)
- for dummy in range(self.test_session.detect_mult * 2):
- wait_for_bfd_packet(self)
- self.test_session.send_packet()
- self.assert_equal(len(self.vapi.collect_events()), 0,
- "number of bfd events")
- self.assert_equal(self.vpp_session.state, BFDState.up, BFDState)
-
- def test_echo_looped_back(self):
- """ echo packets looped back """
- # don't need a session in this case..
- self.vpp_session.remove_vpp_config()
- self.pg0.enable_capture()
- echo_packet_count = 10
- # random source port low enough to increment a few times..
- udp_sport_tx = randint(1, 50000)
- udp_sport_rx = udp_sport_tx
- echo_packet = (Ether(src=self.pg0.remote_mac,
- dst=self.pg0.local_mac) /
- IPv6(src=self.pg0.remote_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):
- self.sleep(.01, "delay between echo packets")
- echo_packet[UDP].sport = udp_sport_tx
- udp_sport_tx += 1
- self.logger.debug(ppp("Sending packet:", echo_packet))
- self.pg0.add_stream(echo_packet)
- self.pg_start()
- for dummy in range(echo_packet_count):
- p = self.pg0.wait_for_packet(1)
- self.logger.debug(ppp("Got packet:", p))
- ether = p[Ether]
- self.assert_equal(self.pg0.remote_mac,
- ether.dst, "Destination MAC")
- 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.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
- # 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_event")
- self.assert_equal(e.sw_if_index, sw_if_index, "sw_if_index")
- self.assertFalse(vpp_session.query_vpp_config())
-
-
-@tag_run_solo
-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(b'\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(b'\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(b'\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)
-
-
-@tag_run_solo
-class BFDSHA1TestCase(VppTestCase):
- """Bidirectional Forwarding Detection (BFD) (SHA1 auth) """
-
- pg0 = None
- vpp_clock_offset = None
- vpp_session = None
- test_session = None
-
- @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()
- cls.pg0.admin_up()
- cls.pg0.resolve_arp()
-
- except Exception:
- super(BFDSHA1TestCase, cls).tearDownClass()
- raise
-
- @classmethod
- def tearDownClass(cls):
- super(BFDSHA1TestCase, cls).tearDownClass()
-
- def setUp(self):
- super(BFDSHA1TestCase, self).setUp()
- self.factory = AuthKeyFactory()
- self.vapi.want_bfd_events()
- self.pg0.enable_capture()
-
- def tearDown(self):
- if not self.vpp_dead:
- self.vapi.want_bfd_events(enable_disable=False)
- self.vapi.collect_events() # clear the event queue
- super(BFDSHA1TestCase, self).tearDown()
-
- def test_session_up(self):
- """ bring BFD session up """
- key = self.factory.create_random_key(self)
- 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)
-
- def test_hold_up(self):
- """ hold BFD session up """
- key = self.factory.create_random_key(self)
- 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)
- for dummy in range(self.test_session.detect_mult * 2):
- wait_for_bfd_packet(self)
- self.test_session.send_packet()
- self.assert_equal(self.vpp_session.state, BFDState.up, BFDState)
-
- def test_hold_up_meticulous(self):
- """ hold BFD session up - meticulous auth """
- 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()
- # specify sequence number so that it wraps
- self.test_session = BFDTestSession(
- self, self.pg0, AF_INET, sha1_key=key,
- bfd_key_id=self.vpp_session.bfd_key_id,
- our_seq_number=0xFFFFFFFF - 4)
- bfd_session_up(self)
- for dummy in range(30):
- wait_for_bfd_packet(self)
- self.test_session.inc_seq_num()
- self.test_session.send_packet()
- self.assert_equal(self.vpp_session.state, BFDState.up, BFDState)
-
- def test_send_bad_seq_number(self):
- """ 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.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.test_session.detect_mult *\
- self.vpp_session.required_min_rx / USEC_IN_SEC
- send_until = time.time() + 2 * detection_time
- while time.time() < send_until:
- 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
- self.assert_equal(len(e), 1, "number of bfd events")
- verify_event(self, e[0], expected_state=BFDState.down)
-
- def execute_rogue_session_scenario(self, vpp_bfd_udp_session,
- legitimate_test_session,
- rogue_test_session,
- rogue_bfd_values=None):
- """ execute a rogue session interaction scenario
-
- 1. create vpp session, add config
- 2. bring the legitimate session up
- 3. copy the bfd values from legitimate session to rogue session
- 4. apply rogue_bfd_values to rogue session
- 5. set rogue session state to down
- 6. send message to take the session down from the rogue session
- 7. assert that the legitimate session is unaffected
- """
-
- self.vpp_session = vpp_bfd_udp_session
- self.vpp_session.add_vpp_config()
- self.test_session = legitimate_test_session
- # bring vpp session up
- bfd_session_up(self)
- # send packet from rogue session
- rogue_test_session.update(
- my_discriminator=self.test_session.my_discriminator,
- your_discriminator=self.test_session.your_discriminator,
- desired_min_tx=self.test_session.desired_min_tx,
- required_min_rx=self.test_session.required_min_rx,
- detect_mult=self.test_session.detect_mult,
- diag=self.test_session.diag,
- state=self.test_session.state,
- auth_type=self.test_session.auth_type)
- if rogue_bfd_values:
- rogue_test_session.update(**rogue_bfd_values)
- rogue_test_session.update(state=BFDState.down)
- rogue_test_session.send_packet()
- wait_for_bfd_packet(self)
- self.assert_equal(self.vpp_session.state, BFDState.up, BFDState)
-
- def test_mismatch_auth(self):
- """ session is not brought down by unauthenticated msg """
- key = self.factory.create_random_key(self)
- key.add_vpp_config()
- vpp_session = VppBFDUDPSession(
- self, self.pg0, self.pg0.remote_ip4, sha1_key=key)
- legitimate_test_session = BFDTestSession(
- self, self.pg0, AF_INET, sha1_key=key,
- bfd_key_id=vpp_session.bfd_key_id)
- rogue_test_session = BFDTestSession(self, self.pg0, AF_INET)
- self.execute_rogue_session_scenario(vpp_session,
- legitimate_test_session,
- rogue_test_session)
-
- 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)
- key.add_vpp_config()
- vpp_session = VppBFDUDPSession(
- self, self.pg0, self.pg0.remote_ip4, sha1_key=key)
- # pick a different random bfd key id
- x = randint(0, 255)
- while x == vpp_session.bfd_key_id:
- x = randint(0, 255)
- legitimate_test_session = BFDTestSession(
- self, self.pg0, AF_INET, sha1_key=key,
- bfd_key_id=vpp_session.bfd_key_id)
- rogue_test_session = BFDTestSession(
- self, self.pg0, AF_INET, sha1_key=key, bfd_key_id=x)
- self.execute_rogue_session_scenario(vpp_session,
- legitimate_test_session,
- rogue_test_session)
-
- def test_mismatched_auth_type(self):
- """ session is not brought down by msg with wrong auth type """
- key = self.factory.create_random_key(self)
- key.add_vpp_config()
- vpp_session = VppBFDUDPSession(
- self, self.pg0, self.pg0.remote_ip4, sha1_key=key)
- legitimate_test_session = BFDTestSession(
- self, self.pg0, AF_INET, sha1_key=key,
- bfd_key_id=vpp_session.bfd_key_id)
- rogue_test_session = BFDTestSession(
- self, self.pg0, AF_INET, sha1_key=key,
- bfd_key_id=vpp_session.bfd_key_id)
- self.execute_rogue_session_scenario(
- vpp_session, legitimate_test_session, rogue_test_session,
- {'auth_type': BFDAuthType.keyed_md5})
-
- def test_restart(self):
- """ simulate remote peer restart and resynchronization """
- 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.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.test_session.detect_mult *\
- self.vpp_session.required_min_rx / USEC_IN_SEC
- 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)
- self.test_session.update(state=BFDState.down)
- # reset sequence number
- self.test_session.our_seq_number = 0
- self.test_session.vpp_seq_number = None
- # now throw away any pending packets
- self.pg0.enable_capture()
- self.test_session.my_discriminator = 0
- bfd_session_up(self)
-
-
-@tag_run_solo
-class BFDAuthOnOffTestCase(VppTestCase):
- """Bidirectional Forwarding Detection (BFD) (changing auth) """
-
- pg0 = None
- vpp_session = None
- test_session = None
-
- @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()
- cls.pg0.admin_up()
- cls.pg0.resolve_arp()
-
- except Exception:
- super(BFDAuthOnOffTestCase, cls).tearDownClass()
- raise
-
- @classmethod
- def tearDownClass(cls):
- super(BFDAuthOnOffTestCase, cls).tearDownClass()
-
- def setUp(self):
- super(BFDAuthOnOffTestCase, self).setUp()
- self.factory = AuthKeyFactory()
- self.vapi.want_bfd_events()
- self.pg0.enable_capture()
-
- def tearDown(self):
- if not self.vpp_dead:
- self.vapi.want_bfd_events(enable_disable=False)
- self.vapi.collect_events() # clear the event queue
- super(BFDAuthOnOffTestCase, self).tearDown()
-
- def test_auth_on_immediate(self):
- """ turn auth on without disturbing session state (immediate) """
- key = self.factory.create_random_key(self)
- key.add_vpp_config()
- self.vpp_session = VppBFDUDPSession(self, self.pg0,
- self.pg0.remote_ip4)
- self.vpp_session.add_vpp_config()
- self.test_session = BFDTestSession(self, self.pg0, AF_INET)
- bfd_session_up(self)
- for dummy in range(self.test_session.detect_mult * 2):
- p = wait_for_bfd_packet(self)
- self.assert_equal(p[BFD].state, BFDState.up, BFDState)
- self.test_session.send_packet()
- self.vpp_session.activate_auth(key)
- self.test_session.bfd_key_id = self.vpp_session.bfd_key_id
- self.test_session.sha1_key = key
- for dummy in range(self.test_session.detect_mult * 2):
- p = wait_for_bfd_packet(self)
- self.assert_equal(p[BFD].state, BFDState.up, BFDState)
- self.test_session.send_packet()
- self.assert_equal(self.vpp_session.state, BFDState.up, BFDState)
- self.assert_equal(len(self.vapi.collect_events()), 0,
- "number of bfd events")
-
- def test_auth_off_immediate(self):
- """ turn auth off without disturbing session state (immediate) """
- key = self.factory.create_random_key(self)
- 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.test_session = BFDTestSession(
- self, self.pg0, AF_INET, sha1_key=key,
- bfd_key_id=self.vpp_session.bfd_key_id)
- bfd_session_up(self)
- # self.vapi.want_bfd_events(enable_disable=0)
- for dummy in range(self.test_session.detect_mult * 2):
- p = wait_for_bfd_packet(self)
- self.assert_equal(p[BFD].state, BFDState.up, BFDState)
- self.test_session.inc_seq_num()
- self.test_session.send_packet()
- self.vpp_session.deactivate_auth()
- self.test_session.bfd_key_id = None
- self.test_session.sha1_key = None
- for dummy in range(self.test_session.detect_mult * 2):
- p = wait_for_bfd_packet(self)
- self.assert_equal(p[BFD].state, BFDState.up, BFDState)
- self.test_session.inc_seq_num()
- self.test_session.send_packet()
- self.assert_equal(self.vpp_session.state, BFDState.up, BFDState)
- self.assert_equal(len(self.vapi.collect_events()), 0,
- "number of bfd events")
-
- def test_auth_change_key_immediate(self):
- """ change auth key without disturbing session state (immediate) """
- key1 = self.factory.create_random_key(self)
- key1.add_vpp_config()
- key2 = self.factory.create_random_key(self)
- key2.add_vpp_config()
- self.vpp_session = VppBFDUDPSession(self, self.pg0,
- self.pg0.remote_ip4, sha1_key=key1)
- self.vpp_session.add_vpp_config()
- self.test_session = BFDTestSession(
- self, self.pg0, AF_INET, sha1_key=key1,
- bfd_key_id=self.vpp_session.bfd_key_id)
- bfd_session_up(self)
- for dummy in range(self.test_session.detect_mult * 2):
- p = wait_for_bfd_packet(self)
- self.assert_equal(p[BFD].state, BFDState.up, BFDState)
- self.test_session.send_packet()
- self.vpp_session.activate_auth(key2)
- self.test_session.bfd_key_id = self.vpp_session.bfd_key_id
- self.test_session.sha1_key = key2
- for dummy in range(self.test_session.detect_mult * 2):
- p = wait_for_bfd_packet(self)
- self.assert_equal(p[BFD].state, BFDState.up, BFDState)
- self.test_session.send_packet()
- self.assert_equal(self.vpp_session.state, BFDState.up, BFDState)
- self.assert_equal(len(self.vapi.collect_events()), 0,
- "number of bfd events")
-
- def test_auth_on_delayed(self):
- """ turn auth on without disturbing session state (delayed) """
- key = self.factory.create_random_key(self)
- key.add_vpp_config()
- self.vpp_session = VppBFDUDPSession(self, self.pg0,
- self.pg0.remote_ip4)
- self.vpp_session.add_vpp_config()
- self.test_session = BFDTestSession(self, self.pg0, AF_INET)
- bfd_session_up(self)
- for dummy in range(self.test_session.detect_mult * 2):
- wait_for_bfd_packet(self)
- self.test_session.send_packet()
- self.vpp_session.activate_auth(key, delayed=True)
- for dummy in range(self.test_session.detect_mult * 2):
- p = wait_for_bfd_packet(self)
- self.assert_equal(p[BFD].state, BFDState.up, BFDState)
- self.test_session.send_packet()
- self.test_session.bfd_key_id = self.vpp_session.bfd_key_id
- self.test_session.sha1_key = key
- self.test_session.send_packet()
- for dummy in range(self.test_session.detect_mult * 2):
- p = wait_for_bfd_packet(self)
- self.assert_equal(p[BFD].state, BFDState.up, BFDState)
- self.test_session.send_packet()
- self.assert_equal(self.vpp_session.state, BFDState.up, BFDState)
- self.assert_equal(len(self.vapi.collect_events()), 0,
- "number of bfd events")
-
- def test_auth_off_delayed(self):
- """ turn auth off without disturbing session state (delayed) """
- key = self.factory.create_random_key(self)
- 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.test_session = BFDTestSession(
- self, self.pg0, AF_INET, sha1_key=key,
- bfd_key_id=self.vpp_session.bfd_key_id)
- bfd_session_up(self)
- for dummy in range(self.test_session.detect_mult * 2):
- p = wait_for_bfd_packet(self)
- self.assert_equal(p[BFD].state, BFDState.up, BFDState)
- self.test_session.send_packet()
- self.vpp_session.deactivate_auth(delayed=True)
- for dummy in range(self.test_session.detect_mult * 2):
- p = wait_for_bfd_packet(self)
- self.assert_equal(p[BFD].state, BFDState.up, BFDState)
- self.test_session.send_packet()
- self.test_session.bfd_key_id = None
- self.test_session.sha1_key = None
- self.test_session.send_packet()
- for dummy in range(self.test_session.detect_mult * 2):
- p = wait_for_bfd_packet(self)
- self.assert_equal(p[BFD].state, BFDState.up, BFDState)
- self.test_session.send_packet()
- self.assert_equal(self.vpp_session.state, BFDState.up, BFDState)
- self.assert_equal(len(self.vapi.collect_events()), 0,
- "number of bfd events")
-
- def test_auth_change_key_delayed(self):
- """ change auth key without disturbing session state (delayed) """
- key1 = self.factory.create_random_key(self)
- key1.add_vpp_config()
- key2 = self.factory.create_random_key(self)
- key2.add_vpp_config()
- 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)
- bfd_session_up(self)
- for dummy in range(self.test_session.detect_mult * 2):
- p = wait_for_bfd_packet(self)
- self.assert_equal(p[BFD].state, BFDState.up, BFDState)
- self.test_session.send_packet()
- self.vpp_session.activate_auth(key2, delayed=True)
- for dummy in range(self.test_session.detect_mult * 2):
- p = wait_for_bfd_packet(self)
- self.assert_equal(p[BFD].state, BFDState.up, BFDState)
- self.test_session.send_packet()
- self.test_session.bfd_key_id = self.vpp_session.bfd_key_id
- self.test_session.sha1_key = key2
- self.test_session.send_packet()
- for dummy in range(self.test_session.detect_mult * 2):
- p = wait_for_bfd_packet(self)
- self.assert_equal(p[BFD].state, BFDState.up, BFDState)
- self.test_session.send_packet()
- self.assert_equal(self.vpp_session.state, BFDState.up, BFDState)
- self.assert_equal(len(self.vapi.collect_events()), 0,
- "number of bfd events")
-
-
-@tag_run_solo
-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),
- "",
- "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()
- echo_ip4 = str(ipaddress.IPv4Address(int(ipaddress.IPv4Address(
- self.loopback0.local_ip4)) ^ 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))
- echo_ip6 = str(ipaddress.IPv6Address(int(ipaddress.IPv6Address(
- self.loopback0.local_ip6)) ^ 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)
Code Review / vpp.git / blobdiff