""" BFD tests """
from __future__ import division
-import unittest
-import hashlib
+
import binascii
+import hashlib
import time
-from struct import pack, unpack
+import unittest
from random import randint, shuffle, getrandbits
from socket import AF_INET, AF_INET6, inet_ntop
-from scapy.packet import Raw
-from scapy.layers.l2 import Ether
+from struct import pack, unpack
+
+from six import moves
from scapy.layers.inet import UDP, IP
from scapy.layers.inet6 import IPv6
+from scapy.layers.l2 import Ether
+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 vpp_pg_interface import CaptureTimeoutError
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
USEC_IN_SEC = 1000000
@classmethod
def setUpClass(cls):
super(BFDAPITestCase, cls).setUpClass()
-
+ cls.vapi.cli("set log class bfd level debug")
try:
cls.create_pg_interfaces(range(2))
for i in cls.pg_interfaces:
session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4)
session.add_vpp_config()
- with self.vapi.expect_negative_api_retval():
+ with self.vapi.assert_negative_api_retval():
session.add_vpp_config()
session.remove_vpp_config()
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)
+
+
+@unittest.skipUnless(running_extended_tests(), "part of extended tests")
class BFDTestSession(object):
""" BFD session as seen from test framework side """
self.our_seq_number = our_seq_number
self.vpp_seq_number = None
self.my_discriminator = 0
- self.desired_min_tx = 100000
- self.required_min_rx = 100000
+ self.desired_min_tx = 300000
+ self.required_min_rx = 300000
self.required_min_echo_rx = None
self.detect_mult = detect_mult
self.diag = BFDDiagCode.no_diagnostic
def verify_event(test, event, expected_state):
""" Verify correctness of event values. """
e = event
- test.logger.debug("BFD: Event: %s" % repr(e))
+ test.logger.debug("BFD: Event: %s" % moves.reprlib.repr(e))
test.assert_equal(e.sw_if_index,
test.vpp_session.interface.sw_if_index,
"BFD interface index")
return p
+@unittest.skipUnless(running_extended_tests(), "part of extended tests")
class BFD4TestCase(VppTestCase):
"""Bidirectional Forwarding Detection (BFD)"""
@classmethod
def setUpClass(cls):
super(BFD4TestCase, cls).setUpClass()
+ cls.vapi.cli("set log class bfd level debug")
try:
cls.create_pg_interfaces([0])
- cls.create_loopback_interfaces([0])
+ cls.create_loopback_interfaces(1)
cls.loopback0 = cls.lo_interfaces[0]
cls.loopback0.config_ip4()
cls.loopback0.admin_up()
pass
self.assert_equal(
len(self.vapi.collect_events()), 0, "number of bfd events")
- self.test_session.update(required_min_rx=100000)
+ self.test_session.update(required_min_rx=300000)
for dummy in range(3):
self.test_session.send_packet()
wait_for_bfd_packet(
required_min_rx=0.5 * self.vpp_session.required_min_rx)
# now we wait 0.8*3*old-req-min-rx and the session should still be up
self.sleep(0.8 * self.vpp_session.detect_mult *
- old_required_min_rx / USEC_IN_SEC)
+ old_required_min_rx / USEC_IN_SEC,
+ "wait before finishing poll sequence")
self.assert_equal(len(self.vapi.collect_events()), 0,
"number of bfd events")
p = wait_for_bfd_packet(self)
final[BFD].flags = "F"
self.test_session.send_packet(final)
# now the session should time out under new conditions
- before = time.time()
- e = self.vapi.wait_for_event(1, "bfd_udp_session_details")
- after = time.time()
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,
def test_echo(self):
""" echo function """
bfd_session_up(self)
- self.test_session.update(required_min_echo_rx=50000)
+ 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(3):
- sleep = 0.75 * detection_time
+ 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.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
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):
- self.assertGreaterEqual(p[BFD].required_min_rx_interval,
- 1000000)
+ 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.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=50000)
+ 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
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=50000)
+ 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
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
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=50000)
+ 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
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
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=50000)
+ 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
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):
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=50000)
+ 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 = 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()
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) """
@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([0])
+ cls.create_loopback_interfaces(1)
cls.loopback0 = cls.lo_interfaces[0]
cls.loopback0.config_ip6()
cls.loopback0.admin_up()
self.assert_equal(udp_sport_tx, udp_sport_rx, "UDP source port (== "
"ECHO packet identifier for test purposes)")
- @unittest.skipUnless(running_extended_tests(), "part of extended tests")
def test_echo(self):
- """ echo function used """
+ """ echo function """
bfd_session_up(self)
- self.test_session.update(required_min_echo_rx=50000)
+ 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(3):
- sleep = 0.75 * detection_time
+ 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.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
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):
- self.assertGreaterEqual(p[BFD].required_min_rx_interval,
- 1000000)
+ 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.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
+
+ 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,
+ proto=DpoProto.DPO_PROTO_IP6)],
+ is_ip6=1)
+ ip_2002_s_64 = VppIpRoute(self, "2002::", 64,
+ [VppRoutePath(self.pg0.remote_ip6,
+ 0xffffffff,
+ proto=DpoProto.DPO_PROTO_IP6)],
+ is_ip6=1)
+ 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 BFDSHA1TestCase(VppTestCase):
"""Bidirectional Forwarding Detection (BFD) (SHA1 auth) """
@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()
@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()
@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()
def test_set_del_udp_echo_source(self):
""" set/del udp echo source """
- self.create_loopback_interfaces([0])
+ self.create_loopback_interfaces(1)
self.loopback0 = self.lo_interfaces[0]
self.loopback0.admin_up()
self.cli_verify_response("show bfd echo-source",
Code Review / vpp.git / blobdiff