#!/usr/bin/env python
+""" BFD tests """
-import unittest
+from __future__ import division
+
+import binascii
+import hashlib
import time
-from random import randint
-from bfd import *
-from framework import *
+import unittest
+from random import randint, shuffle, getrandbits
+from socket import AF_INET, AF_INET6, inet_ntop
+from struct import pack, unpack
+
+from six import moves
+import scapy.compat
+from scapy.layers.inet import UDP, IP
+from scapy.layers.inet6 import IPv6
+from scapy.layers.l2 import Ether, GRE
+from scapy.packet import Raw
+
+from bfd import VppBFDAuthKey, BFD, BFDAuthType, VppBFDUDPSession, \
+ BFDDiagCode, BFDState, BFD_vpp_echo
+from framework import VppTestCase, VppTestRunner, running_extended_tests
from util import ppp
+from vpp_ip import DpoProto
+from vpp_ip_route import VppIpRoute, VppRoutePath
+from vpp_lo_interface import VppLoInterface
+from vpp_papi_provider import UnexpectedApiReturnValueError
+from vpp_pg_interface import CaptureTimeoutError, is_ipv6_misc
+from vpp_gre_interface import VppGreInterface
+
+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)
+
+
+@unittest.skipUnless(running_extended_tests, "part of extended tests")
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([0])
- cls.pg0.config_ip4()
- cls.pg0.resolve_arp()
+ 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" % str(session.state))
+ self.logger.debug("Session state is %s", session.state)
session.remove_vpp_config()
- session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4)
session.add_vpp_config()
- self.logger.debug("Session state is %s" % str(session.state))
+ 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()
- try:
+
+ with self.vapi.assert_negative_api_retval():
session.add_vpp_config()
- except:
- session.remove_vpp_config()
- return
+
session.remove_vpp_config()
- raise Exception("Expected failure while adding duplicate "
- "configuration")
+ 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 create_packet(interface, ttl=255, src_port=50000, **kwargs):
- p = (Ether(src=interface.remote_mac, dst=interface.local_mac) /
- IP(src=interface.remote_ip4, dst=interface.local_ip4, ttl=ttl) /
- UDP(sport=src_port, dport=BFD.udp_dport) /
- BFD(*kwargs))
- return p
+ 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 = 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 verify_ip(test, packet, local_ip, remote_ip):
- """ Verify correctness of IP layer. """
- ip = packet[IP]
- test.assert_equal(ip.src, local_ip, "IP source address")
- test.assert_equal(ip.dst, remote_ip, "IP destination address")
- test.assert_equal(ip.ttl, 255, "IP TTL")
+ 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 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 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(self.loopback0.sw_if_index)
+ echo_source = self.vapi.bfd_udp_get_echo_source()
+ self.assertTrue(echo_source.is_set)
+ self.assertEqual(echo_source.sw_if_index, self.loopback0.sw_if_index)
+ self.assertFalse(echo_source.have_usable_ip4)
+ self.assertFalse(echo_source.have_usable_ip6)
+
+ self.loopback0.config_ip4()
+ unpacked = unpack("!L", self.loopback0.local_ip4n)
+ echo_ip4 = pack("!L", unpacked[0] ^ 1)
+ echo_source = self.vapi.bfd_udp_get_echo_source()
+ self.assertTrue(echo_source.is_set)
+ self.assertEqual(echo_source.sw_if_index, self.loopback0.sw_if_index)
+ self.assertTrue(echo_source.have_usable_ip4)
+ self.assertEqual(echo_source.ip4_addr, echo_ip4)
+ self.assertFalse(echo_source.have_usable_ip6)
+
+ self.loopback0.config_ip6()
+ unpacked = unpack("!LLLL", self.loopback0.local_ip6n)
+ echo_ip6 = pack("!LLLL", unpacked[0], unpacked[1], unpacked[2],
+ unpacked[3] ^ 1)
+ echo_source = self.vapi.bfd_udp_get_echo_source()
+ self.assertTrue(echo_source.is_set)
+ self.assertEqual(echo_source.sw_if_index, self.loopback0.sw_if_index)
+ self.assertTrue(echo_source.have_usable_ip4)
+ self.assertEqual(echo_source.ip4_addr, echo_ip4)
+ self.assertTrue(echo_source.have_usable_ip6)
+ self.assertEqual(echo_source.ip6_addr, 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, detect_mult=3):
+ 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
- self.bfd_values = {
- 'my_discriminator': 0,
- 'desired_min_tx_interval': 100000,
- 'detect_mult': detect_mult,
- 'diag': BFDDiagCode.no_diagnostic,
- }
+ 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 update(self, **kwargs):
- self.bfd_values.update(kwargs)
+ 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):
- packet = create_packet(self.interface)
- for name, value in self.bfd_values.iteritems():
- packet[BFD].setfieldval(name, value)
+ """ 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 + \
+ "\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):
- p = self.create_packet()
- self.test.logger.debug(ppp("Sending packet:", p))
- self.test.pg0.add_stream([p])
+ 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_packet(self, packet):
+ 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, "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.bfd_values['my_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() - 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_details")
+ verify_event(test, e, expected_state=BFDState.up)
+ test.logger.info("BFD: Session is Up")
+ test.test_session.update(state=BFDState.up)
+ if test.test_session.sha1_key and test.test_session.sha1_key.auth_type == \
+ BFDAuthType.meticulous_keyed_sha1:
+ test.test_session.inc_seq_num()
+ test.test_session.send_packet()
+ test.assert_equal(test.vpp_session.state, BFDState.up, BFDState)
+
+
+def bfd_session_down(test):
+ """ Bring BFD session down """
+ test.assert_equal(test.vpp_session.state, BFDState.up, BFDState)
+ test.test_session.update(state=BFDState.down)
+ if test.test_session.sha1_key and test.test_session.sha1_key.auth_type == \
+ BFDAuthType.meticulous_keyed_sha1:
+ test.test_session.inc_seq_num()
+ test.test_session.send_packet()
+ test.logger.info("BFD: Waiting for event")
+ e = test.vapi.wait_for_event(1, "bfd_udp_session_details")
+ 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" % moves.reprlib.repr(e))
+ test.assert_equal(e.sw_if_index,
+ test.vpp_session.interface.sw_if_index,
+ "BFD interface index")
+ is_ipv6 = 0
+ if test.vpp_session.af == AF_INET6:
+ is_ipv6 = 1
+ test.assert_equal(e.is_ipv6, is_ipv6, "is_ipv6")
+ if test.vpp_session.af == AF_INET:
+ test.assert_equal(e.local_addr[:4], test.vpp_session.local_addr_n,
+ "Local IPv4 address")
+ test.assert_equal(e.peer_addr[:4], test.vpp_session.peer_addr_n,
+ "Peer IPv4 address")
+ else:
+ test.assert_equal(e.local_addr, test.vpp_session.local_addr_n,
+ "Local IPv6 address")
+ test.assert_equal(e.peer_addr, test.vpp_session.peer_addr_n,
+ "Peer IPv6 address")
+ test.assert_equal(e.state, expected_state, BFDState)
-class BFDTestCase(VppTestCase):
+
+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
+
+
+@unittest.skipUnless(running_extended_tests, "part of extended tests")
+class BFD4TestCase(VppTestCase):
"""Bidirectional Forwarding Detection (BFD)"""
+ pg0 = None
+ vpp_clock_offset = None
+ vpp_session = None
+ test_session = None
+
@classmethod
def setUpClass(cls):
- super(BFDTestCase, cls).setUpClass()
+ 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.generate_remote_hosts()
cls.pg0.configure_ipv4_neighbors()
cls.pg0.admin_up()
cls.pg0.resolve_arp()
except Exception:
- super(BFDTestCase, cls).tearDownClass()
+ super(BFD4TestCase, cls).tearDownClass()
raise
+ @classmethod
+ def tearDownClass(cls):
+ super(BFD4TestCase, cls).tearDownClass()
+
def setUp(self):
- super(BFDTestCase, self).setUp()
+ super(BFD4TestCase, self).setUp()
+ self.factory = AuthKeyFactory()
self.vapi.want_bfd_events()
- 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)
+ 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:
+ self.vapi.want_bfd_events(enable_disable=0)
+ raise
def tearDown(self):
- self.vapi.want_bfd_events(enable_disable=0)
- self.vapi.collect_events() # clear the event queue
if not self.vpp_dead:
- self.vpp_session.remove_vpp_config()
- super(BFDTestCase, self).tearDown()
-
- def verify_event(self, event, expected_state):
- """ Verify correctness of event values. """
- e = event
- self.logger.debug("BFD: Event: %s" % repr(e))
- self.assert_equal(e.bs_index, self.vpp_session.bs_index,
- "BFD session index")
- self.assert_equal(e.sw_if_index, self.vpp_session.interface.sw_if_index,
- "BFD interface index")
- is_ipv6 = 0
- if self.vpp_session.af == AF_INET6:
- is_ipv6 = 1
- self.assert_equal(e.is_ipv6, is_ipv6, "is_ipv6")
- if self.vpp_session.af == AF_INET:
- self.assert_equal(e.local_addr[:4], self.vpp_session.local_addr_n,
- "Local IPv4 address")
- self.assert_equal(e.peer_addr[:4], self.vpp_session.peer_addr_n,
- "Peer IPv4 address")
- else:
- self.assert_equal(e.local_addr, self.vpp_session.local_addr_n,
- "Local IPv6 address")
- self.assert_equal(e.peer_addr, self.vpp_session.peer_addr_n,
- "Peer IPv6 address")
- self.assert_equal(e.state, expected_state, BFDState)
-
- def wait_for_bfd_packet(self, timeout=1):
- self.logger.info("BFD: Waiting for BFD packet")
- p = self.pg0.wait_for_packet(timeout=timeout)
- 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(self, p, self.pg0.local_ip4, self.pg0.remote_ip4)
- verify_udp(self, p)
- self.test_session.verify_packet(p)
- return p
+ 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_details")
+ verify_event(self, e, expected_state=BFDState.init)
+ self.logger.info("BFD: Sending Up")
+ self.test_session.send_packet()
+ self.logger.info("BFD: Waiting for event")
+ e = self.vapi.wait_for_event(1, "bfd_udp_session_details")
+ verify_event(self, e, expected_state=BFDState.up)
+ self.logger.info("BFD: Session is Up")
+ self.test_session.update(state=BFDState.up)
+ self.test_session.send_packet()
+ self.assert_equal(self.vpp_session.state, BFDState.up, BFDState)
+
+ def test_session_down(self):
+ """ bring BFD session down """
+ bfd_session_up(self)
+ bfd_session_down(self)
+
+ @unittest.skipUnless(running_extended_tests, "part of extended tests")
+ def test_hold_up(self):
+ """ hold BFD session up """
+ bfd_session_up(self)
+ 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")
+
+ @unittest.skipUnless(running_extended_tests, "part of extended tests")
def test_slow_timer(self):
""" verify slow periodic control frames while session down """
- self.pg_enable_capture([self.pg0])
- expected_packets = 3
- self.logger.info("BFD: Waiting for %d BFD packets" % expected_packets)
- self.wait_for_bfd_packet(2)
- for i in range(expected_packets):
- before = time.time()
- self.wait_for_bfd_packet(2)
- after = time.time()
+ 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(
- after - before, 0.70, 1.05, "time between slow packets")
- before = after
+ time_diff, 0.70, 1.05, "time between slow packets")
+ prev_packet = next_packet
+ @unittest.skipUnless(running_extended_tests, "part of extended tests")
def test_zero_remote_min_rx(self):
- """ no packets when zero BFD RemoteMinRxInterval """
- self.pg_enable_capture([self.pg0])
- p = self.wait_for_bfd_packet(2)
- self.test_session.update(my_discriminator=randint(0, 40000000),
- your_discriminator=p[BFD].my_discriminator,
- state=BFDState.init,
- required_min_rx_interval=0)
+ """ 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")
+
+ @unittest.skipUnless(running_extended_tests, "part of extended tests")
+ def test_conn_down(self):
+ """ verify session goes down after inactivity """
+ bfd_session_up(self)
+ detection_time = self.test_session.detect_mult *\
+ self.vpp_session.required_min_rx / USEC_IN_SEC
+ self.sleep(detection_time, "waiting for BFD session time-out")
e = self.vapi.wait_for_event(1, "bfd_udp_session_details")
- self.verify_event(e, expected_state=BFDState.up)
+ verify_event(self, e, expected_state=BFDState.down)
+
+ @unittest.skipUnless(running_extended_tests, "part of extended tests")
+ def test_large_required_min_rx(self):
+ """ large remote required min rx interval """
+ bfd_session_up(self)
+ 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")
+ @unittest.skipUnless(running_extended_tests, "part of extended tests")
+ def test_immediate_remote_min_rx_reduction(self):
+ """ immediately honor remote required min rx reduction """
+ self.vpp_session.remove_vpp_config()
+ 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
+
+ @unittest.skipUnless(running_extended_tests, "part of extended tests")
+ def test_modify_req_min_rx_double(self):
+ """ modify session - double required min rx """
+ bfd_session_up(self)
+ 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_details")
+ 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")
+
+ @unittest.skipUnless(running_extended_tests, "part of extended tests")
+ def test_modify_req_min_rx_halve(self):
+ """ modify session - halve required min rx """
+ self.vpp_session.modify_parameters(
+ 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_details")
+ 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)
+
+ @unittest.skipUnless(running_extended_tests, "part of extended tests")
+ 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")
+
+ @unittest.skipUnless(running_extended_tests, "part of extended tests")
+ def test_queued_poll(self):
+ """ test poll sequence queueing """
+ bfd_session_up(self)
+ p = wait_for_bfd_packet(self)
+ self.vpp_session.modify_parameters(
+ required_min_rx=2 * self.vpp_session.required_min_rx)
+ p = wait_for_bfd_packet(self)
+ poll_sequence_start = time.time()
+ poll_sequence_length_min = 0.5
+ send_final_after = time.time() + poll_sequence_length_min
+ # poll bit needs to be set
+ self.assertIn("P", p.sprintf("%BFD.flags%"),
+ "Poll bit not set in BFD packet")
+ self.assert_equal(p[BFD].required_min_rx_interval,
+ self.vpp_session.required_min_rx,
+ "BFD required min rx interval")
+ self.vpp_session.modify_parameters(
+ required_min_rx=2 * self.vpp_session.required_min_rx)
+ # 2nd poll sequence should be queued now
+ # don't send the reply back yet, wait for some time to emulate
+ # longer round-trip time
+ packet_count = 0
+ while time.time() < send_final_after:
+ self.test_session.send_packet()
+ p = wait_for_bfd_packet(self)
+ self.assert_equal(len(self.vapi.collect_events()), 0,
+ "number of bfd events")
+ self.assert_equal(p[BFD].required_min_rx_interval,
+ self.vpp_session.required_min_rx,
+ "BFD required min rx interval")
+ packet_count += 1
+ # poll bit must be set
+ self.assertIn("P", p.sprintf("%BFD.flags%"),
+ "Poll bit not set in BFD packet")
+ final = self.test_session.create_packet()
+ final[BFD].flags = "F"
+ self.test_session.send_packet(final)
+ # finish 1st with final
+ poll_sequence_length = time.time() - poll_sequence_start
+ # vpp must wait for some time before starting new poll sequence
+ poll_no_2_started = False
+ for dummy in range(2 * packet_count):
+ p = wait_for_bfd_packet(self)
+ self.assert_equal(len(self.vapi.collect_events()), 0,
+ "number of bfd events")
+ if "P" in p.sprintf("%BFD.flags%"):
+ poll_no_2_started = True
+ if time.time() < poll_sequence_start + poll_sequence_length:
+ raise Exception("VPP started 2nd poll sequence too soon")
+ final = self.test_session.create_packet()
+ final[BFD].flags = "F"
+ self.test_session.send_packet(final)
+ break
+ else:
+ self.test_session.send_packet()
+ self.assertTrue(poll_no_2_started, "2nd poll sequence not performed")
+ # finish 2nd with final
+ final = self.test_session.create_packet()
+ final[BFD].flags = "F"
+ self.test_session.send_packet(final)
+ p = wait_for_bfd_packet(self)
+ # poll bit must not be set
+ self.assertNotIn("P", p.sprintf("%BFD.flags%"),
+ "Poll bit set in BFD packet")
+
+ @unittest.skipUnless(running_extended_tests, "part of extended tests")
+ def test_poll_response(self):
+ """ test correct response to control frame with poll bit set """
+ bfd_session_up(self)
+ poll = self.test_session.create_packet()
+ poll[BFD].flags = "P"
+ self.test_session.send_packet(poll)
+ final = wait_for_bfd_packet(
+ self, pcap_time_min=time.time() - self.vpp_clock_offset)
+ self.assertIn("F", final.sprintf("%BFD.flags%"))
+
+ @unittest.skipUnless(running_extended_tests, "part of extended tests")
+ def test_no_periodic_if_remote_demand(self):
+ """ no periodic frames outside poll sequence if remote demand set """
+ bfd_session_up(self)
+ 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(self.loopback0.sw_if_index)
+ echo_seen = False
+ # should be turned on - loopback echo packets
+ for dummy in range(3):
+ loop_until = time.time() + 0.75 * detection_time
+ while time.time() < loop_until:
+ p = self.pg0.wait_for_packet(1)
+ self.logger.debug(ppp("Got packet:", p))
+ if p[UDP].dport == BFD.udp_dport_echo:
+ self.assert_equal(
+ p[IP].dst, self.pg0.local_ip4, "BFD ECHO dst IP")
+ self.assertNotEqual(p[IP].src, self.loopback0.local_ip4,
+ "BFD ECHO src IP equal to loopback IP")
+ self.logger.debug(ppp("Looping back packet:", p))
+ self.assert_equal(p[Ether].dst, self.pg0.remote_mac,
+ "ECHO packet destination MAC address")
+ p[Ether].dst = self.pg0.local_mac
+ self.pg0.add_stream(p)
+ self.pg_start()
+ echo_seen = True
+ elif p.haslayer(BFD):
+ if echo_seen:
+ self.assertGreaterEqual(
+ p[BFD].required_min_rx_interval,
+ 1000000)
+ if "P" in p.sprintf("%BFD.flags%"):
+ final = self.test_session.create_packet()
+ final[BFD].flags = "F"
+ self.test_session.send_packet(final)
+ else:
+ raise Exception(ppp("Received unknown packet:", p))
+
+ self.assert_equal(len(self.vapi.collect_events()), 0,
+ "number of bfd events")
+ self.test_session.send_packet()
+ self.assertTrue(echo_seen, "No echo packets received")
+
+ @unittest.skipUnless(running_extended_tests, "part of extended tests")
+ def test_echo_fail(self):
+ """ session goes down if echo function fails """
+ bfd_session_up(self)
+ self.test_session.update(required_min_echo_rx=150000)
+ self.test_session.send_packet()
+ detection_time = self.test_session.detect_mult *\
+ self.vpp_session.required_min_rx / USEC_IN_SEC
+ self.vapi.bfd_udp_set_echo_source(self.loopback0.sw_if_index)
+ # echo function should be used now, but we will drop the echo packets
+ verified_diag = False
+ for dummy in range(3):
+ loop_until = time.time() + 0.75 * detection_time
+ while time.time() < loop_until:
+ p = self.pg0.wait_for_packet(1)
+ self.logger.debug(ppp("Got packet:", p))
+ if p[UDP].dport == BFD.udp_dport_echo:
+ # dropped
+ pass
+ elif p.haslayer(BFD):
+ if "P" in p.sprintf("%BFD.flags%"):
+ self.assertGreaterEqual(
+ p[BFD].required_min_rx_interval,
+ 1000000)
+ final = self.test_session.create_packet()
+ final[BFD].flags = "F"
+ self.test_session.send_packet(final)
+ if p[BFD].state == BFDState.down:
+ self.assert_equal(p[BFD].diag,
+ BFDDiagCode.echo_function_failed,
+ BFDDiagCode)
+ verified_diag = True
+ else:
+ raise Exception(ppp("Received unknown packet:", p))
+ self.test_session.send_packet()
+ events = self.vapi.collect_events()
+ self.assert_equal(len(events), 1, "number of bfd events")
+ self.assert_equal(events[0].state, BFDState.down, BFDState)
+ self.assertTrue(verified_diag, "Incorrect diagnostics code received")
+
+ @unittest.skipUnless(running_extended_tests, "part of extended tests")
+ def test_echo_stop(self):
+ """ echo function stops if peer sets required min echo rx zero """
+ bfd_session_up(self)
+ self.test_session.update(required_min_echo_rx=150000)
+ self.test_session.send_packet()
+ self.vapi.bfd_udp_set_echo_source(self.loopback0.sw_if_index)
+ # wait for first echo packet
+ while True:
+ p = self.pg0.wait_for_packet(1)
+ self.logger.debug(ppp("Got packet:", p))
+ if p[UDP].dport == BFD.udp_dport_echo:
+ self.logger.debug(ppp("Looping back packet:", p))
+ p[Ether].dst = self.pg0.local_mac
+ self.pg0.add_stream(p)
+ self.pg_start()
+ break
+ elif p.haslayer(BFD):
+ # ignore BFD
+ pass
+ else:
+ raise Exception(ppp("Received unknown packet:", p))
+ self.test_session.update(required_min_echo_rx=0)
+ self.test_session.send_packet()
+ # echo packets shouldn't arrive anymore
+ for dummy in range(5):
+ wait_for_bfd_packet(
+ self, pcap_time_min=time.time() - self.vpp_clock_offset)
+ self.test_session.send_packet()
+ events = self.vapi.collect_events()
+ self.assert_equal(len(events), 0, "number of bfd events")
+
+ @unittest.skipUnless(running_extended_tests, "part of extended tests")
+ def test_echo_source_removed(self):
+ """ echo function stops if echo source is removed """
+ bfd_session_up(self)
+ self.test_session.update(required_min_echo_rx=150000)
+ self.test_session.send_packet()
+ self.vapi.bfd_udp_set_echo_source(self.loopback0.sw_if_index)
+ # wait for first echo packet
+ while True:
+ p = self.pg0.wait_for_packet(1)
+ self.logger.debug(ppp("Got packet:", p))
+ if p[UDP].dport == BFD.udp_dport_echo:
+ self.logger.debug(ppp("Looping back packet:", p))
+ p[Ether].dst = self.pg0.local_mac
+ self.pg0.add_stream(p)
+ self.pg_start()
+ break
+ elif p.haslayer(BFD):
+ # ignore BFD
+ pass
+ else:
+ raise Exception(ppp("Received unknown packet:", p))
+ self.vapi.bfd_udp_del_echo_source()
+ self.test_session.send_packet()
+ # echo packets shouldn't arrive anymore
+ for dummy in range(5):
+ wait_for_bfd_packet(
+ self, pcap_time_min=time.time() - self.vpp_clock_offset)
+ self.test_session.send_packet()
+ events = self.vapi.collect_events()
+ self.assert_equal(len(events), 0, "number of bfd events")
+
+ @unittest.skipUnless(running_extended_tests, "part of extended tests")
+ def test_stale_echo(self):
+ """ stale echo packets don't keep a session up """
+ bfd_session_up(self)
+ self.test_session.update(required_min_echo_rx=150000)
+ self.vapi.bfd_udp_set_echo_source(self.loopback0.sw_if_index)
+ self.test_session.send_packet()
+ # should be turned on - loopback echo packets
+ echo_packet = None
+ timeout_at = None
+ timeout_ok = False
+ for dummy in range(10 * self.vpp_session.detect_mult):
+ p = self.pg0.wait_for_packet(1)
+ if p[UDP].dport == BFD.udp_dport_echo:
+ if echo_packet is None:
+ self.logger.debug(ppp("Got first echo packet:", p))
+ echo_packet = p
+ timeout_at = time.time() + self.vpp_session.detect_mult * \
+ self.test_session.required_min_echo_rx / USEC_IN_SEC
+ else:
+ self.logger.debug(ppp("Got followup echo packet:", p))
+ self.logger.debug(ppp("Looping back first echo packet:", p))
+ echo_packet[Ether].dst = self.pg0.local_mac
+ self.pg0.add_stream(echo_packet)
+ self.pg_start()
+ elif p.haslayer(BFD):
+ self.logger.debug(ppp("Got packet:", p))
+ if "P" in p.sprintf("%BFD.flags%"):
+ final = self.test_session.create_packet()
+ final[BFD].flags = "F"
+ self.test_session.send_packet(final)
+ if p[BFD].state == BFDState.down:
+ self.assertIsNotNone(
+ timeout_at,
+ "Session went down before first echo packet received")
+ now = time.time()
+ self.assertGreaterEqual(
+ now, timeout_at,
+ "Session timeout at %s, but is expected at %s" %
+ (now, timeout_at))
+ self.assert_equal(p[BFD].diag,
+ BFDDiagCode.echo_function_failed,
+ BFDDiagCode)
+ events = self.vapi.collect_events()
+ self.assert_equal(len(events), 1, "number of bfd events")
+ self.assert_equal(events[0].state, BFDState.down, BFDState)
+ timeout_ok = True
+ break
+ else:
+ raise Exception(ppp("Received unknown packet:", p))
+ self.test_session.send_packet()
+ self.assertTrue(timeout_ok, "Expected timeout event didn't occur")
+
+ @unittest.skipUnless(running_extended_tests, "part of extended tests")
+ def test_invalid_echo_checksum(self):
+ """ echo packets with invalid checksum don't keep a session up """
+ bfd_session_up(self)
+ self.test_session.update(required_min_echo_rx=150000)
+ self.vapi.bfd_udp_set_echo_source(self.loopback0.sw_if_index)
+ self.test_session.send_packet()
+ # should be turned on - loopback echo packets
+ timeout_at = None
+ timeout_ok = False
+ for dummy in range(10 * self.vpp_session.detect_mult):
+ p = self.pg0.wait_for_packet(1)
+ if p[UDP].dport == BFD.udp_dport_echo:
+ self.logger.debug(ppp("Got echo packet:", p))
+ if timeout_at is None:
+ timeout_at = time.time() + self.vpp_session.detect_mult * \
+ self.test_session.required_min_echo_rx / USEC_IN_SEC
+ p[BFD_vpp_echo].checksum = getrandbits(64)
+ p[Ether].dst = self.pg0.local_mac
+ self.logger.debug(ppp("Looping back modified echo packet:", p))
+ self.pg0.add_stream(p)
+ self.pg_start()
+ elif p.haslayer(BFD):
+ self.logger.debug(ppp("Got packet:", p))
+ if "P" in p.sprintf("%BFD.flags%"):
+ final = self.test_session.create_packet()
+ final[BFD].flags = "F"
+ self.test_session.send_packet(final)
+ if p[BFD].state == BFDState.down:
+ self.assertIsNotNone(
+ timeout_at,
+ "Session went down before first echo packet received")
+ now = time.time()
+ self.assertGreaterEqual(
+ now, timeout_at,
+ "Session timeout at %s, but is expected at %s" %
+ (now, timeout_at))
+ self.assert_equal(p[BFD].diag,
+ BFDDiagCode.echo_function_failed,
+ BFDDiagCode)
+ events = self.vapi.collect_events()
+ self.assert_equal(len(events), 1, "number of bfd events")
+ self.assert_equal(events[0].state, BFDState.down, BFDState)
+ timeout_ok = True
+ break
+ else:
+ raise Exception(ppp("Received unknown packet:", p))
+ self.test_session.send_packet()
+ self.assertTrue(timeout_ok, "Expected timeout event didn't occur")
+
+ @unittest.skipUnless(running_extended_tests, "part of extended tests")
+ def test_admin_up_down(self):
+ """ put session admin-up and admin-down """
+ bfd_session_up(self)
+ self.vpp_session.admin_down()
+ self.pg0.enable_capture()
+ e = self.vapi.wait_for_event(1, "bfd_udp_session_details")
+ 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_details")
+ 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_details")
+ verify_event(self, e, expected_state=BFDState.init)
+ self.test_session.update(state=BFDState.up)
+ self.test_session.send_packet()
+ p = wait_for_bfd_packet(
+ self, pcap_time_min=time.time() - self.vpp_clock_offset)
+ self.assert_equal(p[BFD].state, BFDState.up, BFDState)
+ e = self.vapi.wait_for_event(1, "bfd_udp_session_details")
+ verify_event(self, e, expected_state=BFDState.up)
+
+ @unittest.skipUnless(running_extended_tests, "part of extended tests")
+ def test_config_change_remote_demand(self):
+ """ configuration change while peer in demand mode """
+ bfd_session_up(self)
+ demand = self.test_session.create_packet()
+ demand[BFD].flags = "D"
+ self.test_session.send_packet(demand)
+ self.vpp_session.modify_parameters(
+ required_min_rx=2 * self.vpp_session.required_min_rx)
+ p = wait_for_bfd_packet(
+ self, pcap_time_min=time.time() - self.vpp_clock_offset)
+ # poll bit must be set
+ self.assertIn("P", p.sprintf("%BFD.flags%"), "Poll bit not set")
+ # terminate poll sequence
+ final = self.test_session.create_packet()
+ final[BFD].flags = "D+F"
+ self.test_session.send_packet(final)
+ # vpp should be quiet now again
+ transmit_time = 0.9 \
+ * max(self.vpp_session.required_min_rx,
+ self.test_session.desired_min_tx) \
+ / USEC_IN_SEC
+ count = 0
+ for dummy in range(self.test_session.detect_mult * 2):
+ self.sleep(transmit_time)
+ self.test_session.send_packet(demand)
+ try:
+ p = wait_for_bfd_packet(self, timeout=0)
+ self.logger.error(ppp("Received unexpected packet:", p))
+ count += 1
+ except CaptureTimeoutError:
+ pass
+ events = self.vapi.collect_events()
+ for e in events:
+ self.logger.error("Received unexpected event: %s", e)
+ self.assert_equal(count, 0, "number of packets received")
+ self.assert_equal(len(events), 0, "number of events received")
+
+ def test_intf_deleted(self):
+ """ interface with bfd session deleted """
+ intf = VppLoInterface(self)
+ intf.config_ip4()
+ intf.admin_up()
+ sw_if_index = intf.sw_if_index
+ vpp_session = VppBFDUDPSession(self, intf, intf.remote_ip4)
+ vpp_session.add_vpp_config()
+ vpp_session.admin_up()
+ intf.remove_vpp_config()
+ e = self.vapi.wait_for_event(1, "bfd_udp_session_details")
+ self.assert_equal(e.sw_if_index, sw_if_index, "sw_if_index")
+ self.assertFalse(vpp_session.query_vpp_config())
+
+
+@unittest.skipUnless(running_extended_tests, "part of extended tests")
+class BFD6TestCase(VppTestCase):
+ """Bidirectional Forwarding Detection (BFD) (IPv6) """
+
+ 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:
- p = self.pg0.wait_for_packet(timeout=1)
+ 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:
- return
- raise Exception(ppp("Received unexpected BFD packet:", p))
-
- def bfd_session_up(self):
- self.pg_enable_capture([self.pg0])
- self.logger.info("BFD: Waiting for slow hello")
- p = self.wait_for_bfd_packet(2)
- self.logger.info("BFD: Sending Init")
- self.test_session.update(my_discriminator=randint(0, 40000000),
- your_discriminator=p[BFD].my_discriminator,
- state=BFDState.init,
- required_min_rx_interval=100000)
+ 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_details")
- self.verify_event(e, expected_state=BFDState.up)
+ verify_event(self, e, expected_state=BFDState.init)
+ self.logger.info("BFD: Sending Up")
+ self.test_session.send_packet()
+ self.logger.info("BFD: Waiting for event")
+ e = self.vapi.wait_for_event(1, "bfd_udp_session_details")
+ verify_event(self, e, expected_state=BFDState.up)
self.logger.info("BFD: Session is Up")
self.test_session.update(state=BFDState.up)
+ self.test_session.send_packet()
+ self.assert_equal(self.vpp_session.state, BFDState.up, BFDState)
+
+ @unittest.skipUnless(running_extended_tests, "part of extended tests")
+ def test_hold_up(self):
+ """ hold BFD session up """
+ bfd_session_up(self)
+ 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(self.loopback0.sw_if_index)
+ echo_seen = False
+ # should be turned on - loopback echo packets
+ for dummy in range(3):
+ loop_until = time.time() + 0.75 * detection_time
+ while time.time() < loop_until:
+ p = self.pg0.wait_for_packet(1)
+ self.logger.debug(ppp("Got packet:", p))
+ if p[UDP].dport == BFD.udp_dport_echo:
+ self.assert_equal(
+ p[IPv6].dst, self.pg0.local_ip6, "BFD ECHO dst IP")
+ self.assertNotEqual(p[IPv6].src, self.loopback0.local_ip6,
+ "BFD ECHO src IP equal to loopback IP")
+ self.logger.debug(ppp("Looping back packet:", p))
+ self.assert_equal(p[Ether].dst, self.pg0.remote_mac,
+ "ECHO packet destination MAC address")
+ p[Ether].dst = self.pg0.local_mac
+ self.pg0.add_stream(p)
+ self.pg_start()
+ echo_seen = True
+ elif p.haslayer(BFD):
+ if echo_seen:
+ self.assertGreaterEqual(
+ p[BFD].required_min_rx_interval,
+ 1000000)
+ if "P" in p.sprintf("%BFD.flags%"):
+ final = self.test_session.create_packet()
+ final[BFD].flags = "F"
+ self.test_session.send_packet(final)
+ else:
+ raise Exception(ppp("Received unknown packet:", p))
+
+ self.assert_equal(len(self.vapi.collect_events()), 0,
+ "number of bfd events")
+ self.test_session.send_packet()
+ self.assertTrue(echo_seen, "No echo packets received")
+
+ def test_intf_deleted(self):
+ """ interface with bfd session deleted """
+ intf = VppLoInterface(self)
+ intf.config_ip6()
+ intf.admin_up()
+ sw_if_index = intf.sw_if_index
+ vpp_session = VppBFDUDPSession(
+ self, intf, intf.remote_ip6, af=AF_INET6)
+ vpp_session.add_vpp_config()
+ vpp_session.admin_up()
+ intf.remove_vpp_config()
+ e = self.vapi.wait_for_event(1, "bfd_udp_session_details")
+ self.assert_equal(e.sw_if_index, sw_if_index, "sw_if_index")
+ self.assertFalse(vpp_session.query_vpp_config())
+
+
+@unittest.skipUnless(running_extended_tests, "part of extended tests")
+class BFDFIBTestCase(VppTestCase):
+ """ BFD-FIB interactions (IPv6) """
+
+ vpp_session = None
+ test_session = None
+
+ @classmethod
+ def setUpClass(cls):
+ super(BFDFIBTestCase, cls).setUpClass()
+
+ @classmethod
+ def tearDownClass(cls):
+ super(BFDFIBTestCase, cls).tearDownClass()
+
+ def setUp(self):
+ super(BFDFIBTestCase, self).setUp()
+ self.create_pg_interfaces(range(1))
+
+ self.vapi.want_bfd_events()
+ self.pg0.enable_capture()
+
+ for i in self.pg_interfaces:
+ i.admin_up()
+ i.config_ip6()
+ i.configure_ipv6_neighbors()
+
+ def tearDown(self):
+ if not self.vpp_dead:
+ self.vapi.want_bfd_events(enable_disable=0)
+
+ super(BFDFIBTestCase, self).tearDown()
+
+ @staticmethod
+ def pkt_is_not_data_traffic(p):
+ """ not data traffic implies BFD or the usual IPv6 ND/RA"""
+ if p.haslayer(BFD) or is_ipv6_misc(p):
+ return True
+ return False
+
+ def test_session_with_fib(self):
+ """ BFD-FIB interactions """
+
+ # packets to match against both of the routes
+ p = [(Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+ IPv6(src="3001::1", dst="2001::1") /
+ UDP(sport=1234, dport=1234) /
+ Raw('\xa5' * 100)),
+ (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+ IPv6(src="3001::1", dst="2002::1") /
+ UDP(sport=1234, dport=1234) /
+ Raw('\xa5' * 100))]
+
+ # A recursive and a non-recursive route via a next-hop that
+ # will have a BFD session
+ ip_2001_s_64 = VppIpRoute(self, "2001::", 64,
+ [VppRoutePath(self.pg0.remote_ip6,
+ self.pg0.sw_if_index)])
+ ip_2002_s_64 = VppIpRoute(self, "2002::", 64,
+ [VppRoutePath(self.pg0.remote_ip6,
+ 0xffffffff)])
+ ip_2001_s_64.add_vpp_config()
+ ip_2002_s_64.add_vpp_config()
+
+ # bring the session up now the routes are present
+ self.vpp_session = VppBFDUDPSession(self,
+ self.pg0,
+ self.pg0.remote_ip6,
+ af=AF_INET6)
+ self.vpp_session.add_vpp_config()
+ self.vpp_session.admin_up()
+ self.test_session = BFDTestSession(self, self.pg0, AF_INET6)
+
+ # session is up - traffic passes
+ bfd_session_up(self)
+
+ self.pg0.add_stream(p)
+ self.pg_start()
+ for packet in p:
+ captured = self.pg0.wait_for_packet(
+ 1,
+ filter_out_fn=self.pkt_is_not_data_traffic)
+ self.assertEqual(captured[IPv6].dst,
+ packet[IPv6].dst)
+
+ # session is up - traffic is dropped
+ bfd_session_down(self)
+
+ self.pg0.add_stream(p)
+ self.pg_start()
+ with self.assertRaises(CaptureTimeoutError):
+ self.pg0.wait_for_packet(1, self.pkt_is_not_data_traffic)
+
+ # session is up - traffic passes
+ bfd_session_up(self)
+
+ self.pg0.add_stream(p)
+ self.pg_start()
+ for packet in p:
+ captured = self.pg0.wait_for_packet(
+ 1,
+ filter_out_fn=self.pkt_is_not_data_traffic)
+ self.assertEqual(captured[IPv6].dst,
+ packet[IPv6].dst)
+
+
+@unittest.skipUnless(running_extended_tests, "part of extended tests")
+class BFDTunTestCase(VppTestCase):
+ """ BFD over GRE tunnel """
+
+ vpp_session = None
+ test_session = None
+
+ @classmethod
+ def setUpClass(cls):
+ super(BFDTunTestCase, cls).setUpClass()
+
+ @classmethod
+ def tearDownClass(cls):
+ super(BFDTunTestCase, cls).tearDownClass()
+
+ def setUp(self):
+ super(BFDTunTestCase, self).setUp()
+ self.create_pg_interfaces(range(1))
+
+ self.vapi.want_bfd_events()
+ self.pg0.enable_capture()
+
+ for i in self.pg_interfaces:
+ i.admin_up()
+ i.config_ip4()
+ i.resolve_arp()
+
+ def tearDown(self):
+ if not self.vpp_dead:
+ self.vapi.want_bfd_events(enable_disable=0)
+
+ super(BFDTunTestCase, self).tearDown()
+
+ @staticmethod
+ def pkt_is_not_data_traffic(p):
+ """ not data traffic implies BFD or the usual IPv6 ND/RA"""
+ if p.haslayer(BFD) or is_ipv6_misc(p):
+ return True
+ return False
+
+ def test_bfd_o_gre(self):
+ """ BFD-o-GRE """
+
+ # A GRE interface over which to run a BFD session
+ gre_if = VppGreInterface(self,
+ self.pg0.local_ip4,
+ self.pg0.remote_ip4)
+ gre_if.add_vpp_config()
+ gre_if.admin_up()
+ gre_if.config_ip4()
+
+ # bring the session up now the routes are present
+ self.vpp_session = VppBFDUDPSession(self,
+ gre_if,
+ gre_if.remote_ip4,
+ is_tunnel=True)
+ self.vpp_session.add_vpp_config()
+ self.vpp_session.admin_up()
+
+ self.test_session = BFDTestSession(
+ self, gre_if, AF_INET,
+ tunnel_header=(IP(src=self.pg0.remote_ip4,
+ dst=self.pg0.local_ip4) /
+ GRE()),
+ phy_interface=self.pg0)
+
+ # packets to match against both of the routes
+ p = [(Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+ IP(src=self.pg0.remote_ip4, dst=gre_if.remote_ip4) /
+ UDP(sport=1234, dport=1234) /
+ Raw('\xa5' * 100))]
+
+ # session is up - traffic passes
+ bfd_session_up(self)
+
+ self.send_and_expect(self.pg0, p, self.pg0)
+
+ # bring session down
+ bfd_session_down(self)
+
+
+@unittest.skipUnless(running_extended_tests, "part of extended tests")
+class BFDSHA1TestCase(VppTestCase):
+ """Bidirectional Forwarding Detection (BFD) (SHA1 auth) """
+
+ 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=0)
+ self.vapi.collect_events() # clear the event queue
+ super(BFDSHA1TestCase, self).tearDown()
def test_session_up(self):
""" bring BFD session up """
- self.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)
+ @unittest.skipUnless(running_extended_tests, "part of extended tests")
def test_hold_up(self):
""" hold BFD session up """
- self.bfd_session_up()
- for i in range(5):
- self.wait_for_bfd_packet()
+ 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_conn_down(self):
- """ verify session goes down after inactivity """
- self.bfd_session_up()
- self.wait_for_bfd_packet()
+ @unittest.skipUnless(running_extended_tests, "part of extended tests")
+ def test_hold_up_meticulous(self):
+ """ hold BFD session up - meticulous auth """
+ key = self.factory.create_random_key(
+ 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)
+
+ @unittest.skipUnless(running_extended_tests, "part of extended tests")
+ def test_send_bad_seq_number(self):
+ """ session is not kept alive by msgs with bad 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)
+
+ @unittest.skipUnless(running_extended_tests, "part of extended tests")
+ def test_mismatch_auth(self):
+ """ session is not brought down by unauthenticated msg """
+ key = self.factory.create_random_key(self)
+ 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)
+
+ @unittest.skipUnless(running_extended_tests, "part of extended tests")
+ def test_mismatch_bfd_key_id(self):
+ """ session is not brought down by msg with non-existent key-id """
+ key = self.factory.create_random_key(self)
+ 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)
+
+ @unittest.skipUnless(running_extended_tests, "part of extended tests")
+ def test_mismatched_auth_type(self):
+ """ session is not brought down by msg with wrong auth type """
+ key = self.factory.create_random_key(self)
+ 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})
+
+ @unittest.skipUnless(running_extended_tests, "part of extended tests")
+ def test_restart(self):
+ """ simulate remote peer restart and resynchronization """
+ key = self.factory.create_random_key(
+ 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()
+ bfd_session_up(self)
+
+
+@unittest.skipUnless(running_extended_tests, "part of extended tests")
+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=0)
+ 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")
- self.wait_for_bfd_packet()
+
+ 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")
- e = self.vapi.wait_for_event(1, "bfd_udp_session_details")
- self.verify_event(e, expected_state=BFDState.down)
- def test_large_required_min_rx(self):
- """ large remote RequiredMinRxInterval """
- self.bfd_session_up()
- interval = 3000000
- self.test_session.update(required_min_rx_interval=interval)
+ 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()
- now = time.time()
- count = 0
- while time.time() < now + interval / 1000000:
- try:
- p = self.wait_for_bfd_packet()
- if count > 1:
- self.logger.error(ppp("Received unexpected packet:", p))
- count += 1
- except:
- pass
- self.assert_in_range(count, 0, 1, "number of packets received")
+ 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")
+
+
+@unittest.skipUnless(running_extended_tests, "part of extended tests")
+class BFDCLITestCase(VppTestCase):
+ """Bidirectional Forwarding Detection (BFD) (CLI) """
+ pg0 = None
+
+ @classmethod
+ def setUpClass(cls):
+ super(BFDCLITestCase, cls).setUpClass()
+ cls.vapi.cli("set log class bfd level debug")
+ try:
+ cls.create_pg_interfaces((0,))
+ cls.pg0.config_ip4()
+ cls.pg0.config_ip6()
+ cls.pg0.resolve_arp()
+ cls.pg0.resolve_ndp()
+
+ except Exception:
+ super(BFDCLITestCase, cls).tearDownClass()
+ raise
+
+ @classmethod
+ def tearDownClass(cls):
+ super(BFDCLITestCase, cls).tearDownClass()
+
+ def setUp(self):
+ super(BFDCLITestCase, self).setUp()
+ self.factory = AuthKeyFactory()
+ self.pg0.enable_capture()
+
+ def tearDown(self):
+ try:
+ self.vapi.want_bfd_events(enable_disable=0)
+ except UnexpectedApiReturnValueError:
+ # some tests aren't subscribed, so this is not an issue
+ pass
+ self.vapi.collect_events() # clear the event queue
+ super(BFDCLITestCase, self).tearDown()
+
+ def cli_verify_no_response(self, cli):
+ """ execute a CLI, asserting that the response is empty """
+ self.assert_equal(self.vapi.cli(cli),
+ b"",
+ "CLI command response")
+
+ def cli_verify_response(self, cli, expected):
+ """ execute a CLI, asserting that the response matches expectation """
+ self.assert_equal(self.vapi.cli(cli).strip(),
+ expected,
+ "CLI command response")
+
+ def test_show(self):
+ """ show commands """
+ k1 = self.factory.create_random_key(self)
+ k1.add_vpp_config()
+ k2 = self.factory.create_random_key(
+ self, auth_type=BFDAuthType.meticulous_keyed_sha1)
+ k2.add_vpp_config()
+ s1 = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4)
+ s1.add_vpp_config()
+ s2 = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip6, af=AF_INET6,
+ sha1_key=k2)
+ s2.add_vpp_config()
+ self.logger.info(self.vapi.ppcli("show bfd keys"))
+ self.logger.info(self.vapi.ppcli("show bfd sessions"))
+ self.logger.info(self.vapi.ppcli("show bfd"))
+
+ def test_set_del_sha1_key(self):
+ """ set/delete SHA1 auth key """
+ k = self.factory.create_random_key(self)
+ self.registry.register(k, self.logger)
+ self.cli_verify_no_response(
+ "bfd key set conf-key-id %s type keyed-sha1 secret %s" %
+ (k.conf_key_id,
+ "".join("{:02x}".format(scapy.compat.orb(c)) for c in k.key)))
+ self.assertTrue(k.query_vpp_config())
+ self.vpp_session = VppBFDUDPSession(
+ self, self.pg0, self.pg0.remote_ip4, sha1_key=k)
+ self.vpp_session.add_vpp_config()
+ self.test_session = \
+ BFDTestSession(self, self.pg0, AF_INET, sha1_key=k,
+ bfd_key_id=self.vpp_session.bfd_key_id)
+ self.vapi.want_bfd_events()
+ bfd_session_up(self)
+ bfd_session_down(self)
+ # try to replace the secret for the key - should fail because the key
+ # is in-use
+ k2 = self.factory.create_random_key(self)
+ self.cli_verify_response(
+ "bfd key set conf-key-id %s type keyed-sha1 secret %s" %
+ (k.conf_key_id,
+ "".join("{:02x}".format(scapy.compat.orb(c)) for c in k2.key)),
+ "bfd key set: `bfd_auth_set_key' API call failed, "
+ "rv=-103:BFD object in use")
+ # manipulating the session using old secret should still work
+ bfd_session_up(self)
+ bfd_session_down(self)
+ self.vpp_session.remove_vpp_config()
+ self.cli_verify_no_response(
+ "bfd key del conf-key-id %s" % k.conf_key_id)
+ self.assertFalse(k.query_vpp_config())
+
+ def test_set_del_meticulous_sha1_key(self):
+ """ set/delete meticulous SHA1 auth key """
+ k = self.factory.create_random_key(
+ self, auth_type=BFDAuthType.meticulous_keyed_sha1)
+ self.registry.register(k, self.logger)
+ self.cli_verify_no_response(
+ "bfd key set conf-key-id %s type meticulous-keyed-sha1 secret %s" %
+ (k.conf_key_id,
+ "".join("{:02x}".format(scapy.compat.orb(c)) for c in k.key)))
+ self.assertTrue(k.query_vpp_config())
+ self.vpp_session = VppBFDUDPSession(self, self.pg0,
+ self.pg0.remote_ip6, af=AF_INET6,
+ sha1_key=k)
+ self.vpp_session.add_vpp_config()
+ self.vpp_session.admin_up()
+ self.test_session = \
+ BFDTestSession(self, self.pg0, AF_INET6, sha1_key=k,
+ bfd_key_id=self.vpp_session.bfd_key_id)
+ self.vapi.want_bfd_events()
+ bfd_session_up(self)
+ bfd_session_down(self)
+ # try to replace the secret for the key - should fail because the key
+ # is in-use
+ k2 = self.factory.create_random_key(self)
+ self.cli_verify_response(
+ "bfd key set conf-key-id %s type keyed-sha1 secret %s" %
+ (k.conf_key_id,
+ "".join("{:02x}".format(scapy.compat.orb(c)) for c in k2.key)),
+ "bfd key set: `bfd_auth_set_key' API call failed, "
+ "rv=-103:BFD object in use")
+ # manipulating the session using old secret should still work
+ bfd_session_up(self)
+ bfd_session_down(self)
+ self.vpp_session.remove_vpp_config()
+ self.cli_verify_no_response(
+ "bfd key del conf-key-id %s" % k.conf_key_id)
+ self.assertFalse(k.query_vpp_config())
+
+ def test_add_mod_del_bfd_udp(self):
+ """ create/modify/delete IPv4 BFD UDP session """
+ vpp_session = VppBFDUDPSession(
+ self, self.pg0, self.pg0.remote_ip4)
+ self.registry.register(vpp_session, self.logger)
+ cli_add_cmd = "bfd udp session add interface %s local-addr %s " \
+ "peer-addr %s desired-min-tx %s required-min-rx %s "\
+ "detect-mult %s" % (self.pg0.name, self.pg0.local_ip4,
+ self.pg0.remote_ip4,
+ vpp_session.desired_min_tx,
+ vpp_session.required_min_rx,
+ vpp_session.detect_mult)
+ self.cli_verify_no_response(cli_add_cmd)
+ # 2nd add should fail
+ self.cli_verify_response(
+ cli_add_cmd,
+ "bfd udp session add: `bfd_add_add_session' API call"
+ " failed, rv=-101:Duplicate BFD object")
+ verify_bfd_session_config(self, vpp_session)
+ mod_session = VppBFDUDPSession(
+ self, self.pg0, self.pg0.remote_ip4,
+ required_min_rx=2 * vpp_session.required_min_rx,
+ desired_min_tx=3 * vpp_session.desired_min_tx,
+ detect_mult=4 * vpp_session.detect_mult)
+ self.cli_verify_no_response(
+ "bfd udp session mod interface %s local-addr %s peer-addr %s "
+ "desired-min-tx %s required-min-rx %s detect-mult %s" %
+ (self.pg0.name, self.pg0.local_ip4, self.pg0.remote_ip4,
+ mod_session.desired_min_tx, mod_session.required_min_rx,
+ mod_session.detect_mult))
+ verify_bfd_session_config(self, mod_session)
+ cli_del_cmd = "bfd udp session del interface %s local-addr %s "\
+ "peer-addr %s" % (self.pg0.name,
+ self.pg0.local_ip4, self.pg0.remote_ip4)
+ self.cli_verify_no_response(cli_del_cmd)
+ # 2nd del is expected to fail
+ self.cli_verify_response(
+ cli_del_cmd, "bfd udp session del: `bfd_udp_del_session' API call"
+ " failed, rv=-102:No such BFD object")
+ self.assertFalse(vpp_session.query_vpp_config())
+
+ def test_add_mod_del_bfd_udp6(self):
+ """ create/modify/delete IPv6 BFD UDP session """
+ vpp_session = VppBFDUDPSession(
+ self, self.pg0, self.pg0.remote_ip6, af=AF_INET6)
+ self.registry.register(vpp_session, self.logger)
+ cli_add_cmd = "bfd udp session add interface %s local-addr %s " \
+ "peer-addr %s desired-min-tx %s required-min-rx %s "\
+ "detect-mult %s" % (self.pg0.name, self.pg0.local_ip6,
+ self.pg0.remote_ip6,
+ vpp_session.desired_min_tx,
+ vpp_session.required_min_rx,
+ vpp_session.detect_mult)
+ self.cli_verify_no_response(cli_add_cmd)
+ # 2nd add should fail
+ self.cli_verify_response(
+ cli_add_cmd,
+ "bfd udp session add: `bfd_add_add_session' API call"
+ " failed, rv=-101:Duplicate BFD object")
+ verify_bfd_session_config(self, vpp_session)
+ mod_session = VppBFDUDPSession(
+ self, self.pg0, self.pg0.remote_ip6, af=AF_INET6,
+ required_min_rx=2 * vpp_session.required_min_rx,
+ desired_min_tx=3 * vpp_session.desired_min_tx,
+ detect_mult=4 * vpp_session.detect_mult)
+ self.cli_verify_no_response(
+ "bfd udp session mod interface %s local-addr %s peer-addr %s "
+ "desired-min-tx %s required-min-rx %s detect-mult %s" %
+ (self.pg0.name, self.pg0.local_ip6, self.pg0.remote_ip6,
+ mod_session.desired_min_tx,
+ mod_session.required_min_rx, mod_session.detect_mult))
+ verify_bfd_session_config(self, mod_session)
+ cli_del_cmd = "bfd udp session del interface %s local-addr %s "\
+ "peer-addr %s" % (self.pg0.name,
+ self.pg0.local_ip6, self.pg0.remote_ip6)
+ self.cli_verify_no_response(cli_del_cmd)
+ # 2nd del is expected to fail
+ self.cli_verify_response(
+ cli_del_cmd,
+ "bfd udp session del: `bfd_udp_del_session' API call"
+ " failed, rv=-102:No such BFD object")
+ self.assertFalse(vpp_session.query_vpp_config())
+
+ def test_add_mod_del_bfd_udp_auth(self):
+ """ create/modify/delete IPv4 BFD UDP session (authenticated) """
+ key = self.factory.create_random_key(self)
+ key.add_vpp_config()
+ vpp_session = VppBFDUDPSession(
+ self, self.pg0, self.pg0.remote_ip4, sha1_key=key)
+ self.registry.register(vpp_session, self.logger)
+ cli_add_cmd = "bfd udp session add interface %s local-addr %s " \
+ "peer-addr %s desired-min-tx %s required-min-rx %s "\
+ "detect-mult %s conf-key-id %s bfd-key-id %s"\
+ % (self.pg0.name, self.pg0.local_ip4, self.pg0.remote_ip4,
+ vpp_session.desired_min_tx, vpp_session.required_min_rx,
+ vpp_session.detect_mult, key.conf_key_id,
+ vpp_session.bfd_key_id)
+ self.cli_verify_no_response(cli_add_cmd)
+ # 2nd add should fail
+ self.cli_verify_response(
+ cli_add_cmd,
+ "bfd udp session add: `bfd_add_add_session' API call"
+ " failed, rv=-101:Duplicate BFD object")
+ verify_bfd_session_config(self, vpp_session)
+ mod_session = VppBFDUDPSession(
+ self, self.pg0, self.pg0.remote_ip4, sha1_key=key,
+ bfd_key_id=vpp_session.bfd_key_id,
+ required_min_rx=2 * vpp_session.required_min_rx,
+ desired_min_tx=3 * vpp_session.desired_min_tx,
+ detect_mult=4 * vpp_session.detect_mult)
+ self.cli_verify_no_response(
+ "bfd udp session mod interface %s local-addr %s peer-addr %s "
+ "desired-min-tx %s required-min-rx %s detect-mult %s" %
+ (self.pg0.name, self.pg0.local_ip4, self.pg0.remote_ip4,
+ mod_session.desired_min_tx,
+ mod_session.required_min_rx, mod_session.detect_mult))
+ verify_bfd_session_config(self, mod_session)
+ cli_del_cmd = "bfd udp session del interface %s local-addr %s "\
+ "peer-addr %s" % (self.pg0.name,
+ self.pg0.local_ip4, self.pg0.remote_ip4)
+ self.cli_verify_no_response(cli_del_cmd)
+ # 2nd del is expected to fail
+ self.cli_verify_response(
+ cli_del_cmd,
+ "bfd udp session del: `bfd_udp_del_session' API call"
+ " failed, rv=-102:No such BFD object")
+ self.assertFalse(vpp_session.query_vpp_config())
+
+ def test_add_mod_del_bfd_udp6_auth(self):
+ """ create/modify/delete IPv6 BFD UDP session (authenticated) """
+ key = self.factory.create_random_key(
+ self, auth_type=BFDAuthType.meticulous_keyed_sha1)
+ key.add_vpp_config()
+ vpp_session = VppBFDUDPSession(
+ self, self.pg0, self.pg0.remote_ip6, af=AF_INET6, sha1_key=key)
+ self.registry.register(vpp_session, self.logger)
+ cli_add_cmd = "bfd udp session add interface %s local-addr %s " \
+ "peer-addr %s desired-min-tx %s required-min-rx %s "\
+ "detect-mult %s conf-key-id %s bfd-key-id %s" \
+ % (self.pg0.name, self.pg0.local_ip6, self.pg0.remote_ip6,
+ vpp_session.desired_min_tx, vpp_session.required_min_rx,
+ vpp_session.detect_mult, key.conf_key_id,
+ vpp_session.bfd_key_id)
+ self.cli_verify_no_response(cli_add_cmd)
+ # 2nd add should fail
+ self.cli_verify_response(
+ cli_add_cmd,
+ "bfd udp session add: `bfd_add_add_session' API call"
+ " failed, rv=-101:Duplicate BFD object")
+ verify_bfd_session_config(self, vpp_session)
+ mod_session = VppBFDUDPSession(
+ self, self.pg0, self.pg0.remote_ip6, af=AF_INET6, sha1_key=key,
+ bfd_key_id=vpp_session.bfd_key_id,
+ required_min_rx=2 * vpp_session.required_min_rx,
+ desired_min_tx=3 * vpp_session.desired_min_tx,
+ detect_mult=4 * vpp_session.detect_mult)
+ self.cli_verify_no_response(
+ "bfd udp session mod interface %s local-addr %s peer-addr %s "
+ "desired-min-tx %s required-min-rx %s detect-mult %s" %
+ (self.pg0.name, self.pg0.local_ip6, self.pg0.remote_ip6,
+ mod_session.desired_min_tx,
+ mod_session.required_min_rx, mod_session.detect_mult))
+ verify_bfd_session_config(self, mod_session)
+ cli_del_cmd = "bfd udp session del interface %s local-addr %s "\
+ "peer-addr %s" % (self.pg0.name,
+ self.pg0.local_ip6, self.pg0.remote_ip6)
+ self.cli_verify_no_response(cli_del_cmd)
+ # 2nd del is expected to fail
+ self.cli_verify_response(
+ cli_del_cmd,
+ "bfd udp session del: `bfd_udp_del_session' API call"
+ " failed, rv=-102:No such BFD object")
+ self.assertFalse(vpp_session.query_vpp_config())
+
+ def test_auth_on_off(self):
+ """ turn authentication on and off """
+ key = self.factory.create_random_key(
+ self, auth_type=BFDAuthType.meticulous_keyed_sha1)
+ key.add_vpp_config()
+ session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4)
+ auth_session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4,
+ sha1_key=key)
+ session.add_vpp_config()
+ cli_activate = \
+ "bfd udp session auth activate interface %s local-addr %s "\
+ "peer-addr %s conf-key-id %s bfd-key-id %s"\
+ % (self.pg0.name, self.pg0.local_ip4, self.pg0.remote_ip4,
+ key.conf_key_id, auth_session.bfd_key_id)
+ self.cli_verify_no_response(cli_activate)
+ verify_bfd_session_config(self, auth_session)
+ self.cli_verify_no_response(cli_activate)
+ verify_bfd_session_config(self, auth_session)
+ cli_deactivate = \
+ "bfd udp session auth deactivate interface %s local-addr %s "\
+ "peer-addr %s "\
+ % (self.pg0.name, self.pg0.local_ip4, self.pg0.remote_ip4)
+ self.cli_verify_no_response(cli_deactivate)
+ verify_bfd_session_config(self, session)
+ self.cli_verify_no_response(cli_deactivate)
+ verify_bfd_session_config(self, session)
+
+ def test_auth_on_off_delayed(self):
+ """ turn authentication on and off (delayed) """
+ key = self.factory.create_random_key(
+ self, auth_type=BFDAuthType.meticulous_keyed_sha1)
+ key.add_vpp_config()
+ session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4)
+ auth_session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4,
+ sha1_key=key)
+ session.add_vpp_config()
+ cli_activate = \
+ "bfd udp session auth activate interface %s local-addr %s "\
+ "peer-addr %s conf-key-id %s bfd-key-id %s delayed yes"\
+ % (self.pg0.name, self.pg0.local_ip4, self.pg0.remote_ip4,
+ key.conf_key_id, auth_session.bfd_key_id)
+ self.cli_verify_no_response(cli_activate)
+ verify_bfd_session_config(self, auth_session)
+ self.cli_verify_no_response(cli_activate)
+ verify_bfd_session_config(self, auth_session)
+ cli_deactivate = \
+ "bfd udp session auth deactivate interface %s local-addr %s "\
+ "peer-addr %s delayed yes"\
+ % (self.pg0.name, self.pg0.local_ip4, self.pg0.remote_ip4)
+ self.cli_verify_no_response(cli_deactivate)
+ verify_bfd_session_config(self, session)
+ self.cli_verify_no_response(cli_deactivate)
+ verify_bfd_session_config(self, session)
+
+ def test_admin_up_down(self):
+ """ put session admin-up and admin-down """
+ session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4)
+ session.add_vpp_config()
+ cli_down = \
+ "bfd udp session set-flags admin down interface %s local-addr %s "\
+ "peer-addr %s "\
+ % (self.pg0.name, self.pg0.local_ip4, self.pg0.remote_ip4)
+ cli_up = \
+ "bfd udp session set-flags admin up interface %s local-addr %s "\
+ "peer-addr %s "\
+ % (self.pg0.name, self.pg0.local_ip4, self.pg0.remote_ip4)
+ self.cli_verify_no_response(cli_down)
+ verify_bfd_session_config(self, session, state=BFDState.admin_down)
+ self.cli_verify_no_response(cli_up)
+ verify_bfd_session_config(self, session, state=BFDState.down)
+ def test_set_del_udp_echo_source(self):
+ """ set/del udp echo source """
+ self.create_loopback_interfaces(1)
+ self.loopback0 = self.lo_interfaces[0]
+ self.loopback0.admin_up()
+ self.cli_verify_response("show bfd echo-source",
+ "UDP echo source is not set.")
+ cli_set = "bfd udp echo-source set interface %s" % self.loopback0.name
+ self.cli_verify_no_response(cli_set)
+ self.cli_verify_response("show bfd echo-source",
+ "UDP echo source is: %s\n"
+ "IPv4 address usable as echo source: none\n"
+ "IPv6 address usable as echo source: none" %
+ self.loopback0.name)
+ self.loopback0.config_ip4()
+ unpacked = unpack("!L", self.loopback0.local_ip4n)
+ echo_ip4 = inet_ntop(AF_INET, pack("!L", unpacked[0] ^ 1))
+ self.cli_verify_response("show bfd echo-source",
+ "UDP echo source is: %s\n"
+ "IPv4 address usable as echo source: %s\n"
+ "IPv6 address usable as echo source: none" %
+ (self.loopback0.name, echo_ip4))
+ unpacked = unpack("!LLLL", self.loopback0.local_ip6n)
+ echo_ip6 = inet_ntop(AF_INET6, pack("!LLLL", unpacked[0], unpacked[1],
+ unpacked[2], unpacked[3] ^ 1))
+ self.loopback0.config_ip6()
+ self.cli_verify_response("show bfd echo-source",
+ "UDP echo source is: %s\n"
+ "IPv4 address usable as echo source: %s\n"
+ "IPv6 address usable as echo source: %s" %
+ (self.loopback0.name, echo_ip4, echo_ip6))
+ cli_del = "bfd udp echo-source del"
+ self.cli_verify_no_response(cli_del)
+ self.cli_verify_response("show bfd echo-source",
+ "UDP echo source is not set.")
if __name__ == '__main__':
unittest.main(testRunner=VppTestRunner)
Code Review / vpp.git / blobdiff