from __future__ import division
import binascii
+from collections import namedtuple
import hashlib
+import ipaddress
+import reprlib
import time
import unittest
from random import randint, shuffle, getrandbits
from socket import AF_INET, AF_INET6, inet_ntop
from struct import pack, unpack
-from six import moves
import scapy.compat
from scapy.layers.inet import UDP, IP
from scapy.layers.inet6 import IPv6
from bfd import VppBFDAuthKey, BFD, BFDAuthType, VppBFDUDPSession, \
BFDDiagCode, BFDState, BFD_vpp_echo
+from framework import tag_fixme_vpp_workers
from framework import VppTestCase, VppTestRunner, running_extended_tests
+from framework import tag_run_solo
from util import ppp
from vpp_ip import DpoProto
from vpp_ip_route import VppIpRoute, VppRoutePath
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"""
"required min receive interval")
self.assert_equal(session.detect_mult, s.detect_mult, "detect mult")
+ def test_upd_bfd(self):
+ """ Create/Modify w/ Update BFD session parameters """
+ session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4,
+ desired_min_tx=50000,
+ required_min_rx=10000,
+ detect_mult=1)
+ session.upd_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.upd_vpp_config(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
for key in keys:
self.assertTrue(key.query_vpp_config())
# remove randomly
- indexes = range(key_count)
+ indexes = list(range(key_count))
shuffle(indexes)
removed = []
for i in indexes:
session.add_vpp_config()
def test_shared_sha1_key(self):
- """ share single SHA1 key between multiple BFD sessions """
+ """ single SHA1 key shared by multiple BFD sessions """
key = self.factory.create_random_key(self)
key.add_vpp_config()
sessions = [
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_ip4 = ipaddress.IPv4Address(int(ipaddress.IPv4Address(
+ self.loopback0.local_ip4)) ^ 1).packed
echo_source = self.vapi.bfd_udp_get_echo_source()
self.assertTrue(echo_source.is_set)
self.assertEqual(echo_source.sw_if_index, self.loopback0.sw_if_index)
self.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_ip6 = ipaddress.IPv6Address(int(ipaddress.IPv6Address(
+ self.loopback0.local_ip6)) ^ 1).packed
+
echo_source = self.vapi.bfd_udp_get_echo_source()
self.assertTrue(echo_source.is_set)
self.assertEqual(echo_source.sw_if_index, self.loopback0.sw_if_index)
self.state = BFDState.down
self.auth_type = BFDAuthType.no_auth
self.tunnel_header = tunnel_header
+ self.tx_packets = 0
+ self.rx_packets = 0
+ self.tx_packets_echo = 0
+ self.rx_packets_echo = 0
def inc_seq_num(self):
""" increment sequence number, wrapping if needed """
if self.sha1_key:
hash_material = scapy.compat.raw(
packet[BFD])[:32] + self.sha1_key.key + \
- "\0" * (20 - len(self.sha1_key.key))
+ b"\0" * (20 - len(self.sha1_key.key))
self.test.logger.debug("BFD: Calculated SHA1 hash: %s" %
hashlib.sha1(hash_material).hexdigest())
packet[BFD].auth_key_hash = hashlib.sha1(hash_material).digest()
interface = self.phy_interface
self.test.logger.debug(ppp("Sending packet:", packet))
interface.add_stream(packet)
+ self.tx_packets += 1
self.test.pg_start()
def verify_sha1_auth(self, packet):
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")
+ expected_hash.encode(), "Auth key hash")
def verify_bfd(self, packet):
""" Verify correctness of BFD layer. """
old_offset = None
if hasattr(test, 'vpp_clock_offset'):
old_offset = test.vpp_clock_offset
- test.vpp_clock_offset = time.time() - p.time
+ test.vpp_clock_offset = time.time() - float(p.time)
test.logger.debug("BFD: Calculated vpp clock offset: %s",
test.vpp_clock_offset)
if old_offset:
test.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")
+ e = test.vapi.wait_for_event(1, "bfd_udp_session_event")
verify_event(test, e, expected_state=BFDState.up)
test.logger.info("BFD: Session is Up")
test.test_session.update(state=BFDState.up)
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")
+ e = test.vapi.wait_for_event(1, "bfd_udp_session_event")
verify_event(test, e, expected_state=BFDState.down)
test.logger.info("BFD: Session is Down")
test.assert_equal(test.vpp_session.state, BFDState.down, BFDState)
def verify_event(test, event, expected_state):
""" Verify correctness of event values. """
e = event
- test.logger.debug("BFD: Event: %s" % moves.reprlib.repr(e))
+ test.logger.debug("BFD: Event: %s" % reprlib.repr(e))
test.assert_equal(e.sw_if_index,
test.vpp_session.interface.sw_if_index,
"BFD interface index")
if time_left < 0:
raise CaptureTimeoutError("Packet did not arrive within timeout")
p = test.pg0.wait_for_packet(timeout=time_left)
+ test.test_session.rx_packets += 1
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 < "
return p
-@unittest.skipUnless(running_extended_tests, "part of extended tests")
+BFDStats = namedtuple("BFDStats", "rx rx_echo tx tx_echo")
+
+
+def bfd_grab_stats_snapshot(test, bs_idx=0, thread_index=None):
+ s = test.statistics
+ ti = thread_index
+ if ti is None:
+ rx = s['/bfd/rx-session-counters'][:, bs_idx].sum_packets()
+ rx_echo = s['/bfd/rx-session-echo-counters'][:, bs_idx].sum_packets()
+ tx = s['/bfd/tx-session-counters'][:, bs_idx].sum_packets()
+ tx_echo = s['/bfd/tx-session-echo-counters'][:, bs_idx].sum_packets()
+ else:
+ rx = s['/bfd/rx-session-counters'][ti, bs_idx].sum_packets()
+ rx_echo = s['/bfd/rx-session-echo-counters'][ti, bs_idx].sum_packets()
+ tx = s['/bfd/tx-session-counters'][ti, bs_idx].sum_packets()
+ tx_echo = s['/bfd/tx-session-echo-counters'][ti, bs_idx].sum_packets()
+ return BFDStats(rx, rx_echo, tx, tx_echo)
+
+
+def bfd_stats_diff(stats_before, stats_after):
+ rx = stats_after.rx - stats_before.rx
+ rx_echo = stats_after.rx_echo - stats_before.rx_echo
+ tx = stats_after.tx - stats_before.tx
+ tx_echo = stats_after.tx_echo - stats_before.tx_echo
+ return BFDStats(rx, rx_echo, tx, tx_echo)
+
+
+@tag_run_solo
class BFD4TestCase(VppTestCase):
"""Bidirectional Forwarding Detection (BFD)"""
self.vapi.want_bfd_events()
self.pg0.enable_capture()
try:
+ self.bfd_udp4_sessions = self.statistics['/bfd/udp4/sessions']
+ self.bfd_udp6_sessions = self.statistics['/bfd/udp6/sessions']
self.vpp_session = VppBFDUDPSession(self, self.pg0,
self.pg0.remote_ip4)
self.vpp_session.add_vpp_config()
def test_session_up(self):
""" bring BFD session up """
bfd_session_up(self)
+ bfd_udp4_sessions = self.statistics['/bfd/udp4/sessions']
+ bfd_udp6_sessions = self.statistics['/bfd/udp6/sessions']
+ self.assert_equal(bfd_udp4_sessions - self.bfd_udp4_sessions, 1)
+ self.assert_equal(bfd_udp6_sessions, self.bfd_udp6_sessions)
def test_session_up_by_ip(self):
""" bring BFD session up - first frame looked up by address pair """
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")
+ e = self.vapi.wait_for_event(1, "bfd_udp_session_event")
verify_event(self, e, expected_state=BFDState.init)
self.logger.info("BFD: Sending Up")
self.test_session.send_packet()
self.logger.info("BFD: Waiting for event")
- e = self.vapi.wait_for_event(1, "bfd_udp_session_details")
+ e = self.vapi.wait_for_event(1, "bfd_udp_session_event")
verify_event(self, e, expected_state=BFDState.up)
self.logger.info("BFD: Session is Up")
self.test_session.update(state=BFDState.up)
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)
self.assert_equal(len(self.vapi.collect_events()), 0,
"number of bfd events")
- @unittest.skipUnless(running_extended_tests, "part of extended tests")
def test_slow_timer(self):
""" verify slow periodic control frames while session down """
packet_count = 3
time_diff, 0.70, 1.05, "time between slow packets")
prev_packet = next_packet
- @unittest.skipUnless(running_extended_tests, "part of extended tests")
def test_zero_remote_min_rx(self):
""" no packets when zero remote required min rx interval """
bfd_session_up(self)
self.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")
+ e = self.vapi.wait_for_event(1, "bfd_udp_session_event")
verify_event(self, e, expected_state=BFDState.down)
- @unittest.skipUnless(running_extended_tests, "part of extended tests")
+ def test_peer_discr_reset_sess_down(self):
+ """ peer discriminator reset after session goes down """
+ bfd_session_up(self)
+ detection_time = self.test_session.detect_mult *\
+ self.vpp_session.required_min_rx / USEC_IN_SEC
+ self.sleep(detection_time, "waiting for BFD session time-out")
+ self.test_session.my_discriminator = 0
+ wait_for_bfd_packet(self,
+ pcap_time_min=time.time() - self.vpp_clock_offset)
+
def test_large_required_min_rx(self):
""" large remote required min rx interval """
bfd_session_up(self)
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()
"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)
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")
+ e = self.vapi.wait_for_event(2 * timeout, "bfd_udp_session_event")
verify_event(self, e, expected_state=BFDState.down)
time_to_event = time.time() - time_mark
self.assert_in_range(time_to_event, .9 * timeout,
1.1 * timeout, "session timeout")
- @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(
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")
+ 2 * detection_time, "bfd_udp_session_event")
after = time.time()
self.assert_in_range(after - before,
0.9 * 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)
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)
self.assertNotIn("P", p.sprintf("%BFD.flags%"),
"Poll bit set in BFD packet")
+ # returning inconsistent results requiring retries in per-patch tests
@unittest.skipUnless(running_extended_tests, "part of extended tests")
def test_poll_response(self):
""" test correct response to control frame with poll bit set """
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)
def test_echo_looped_back(self):
""" echo packets looped back """
- # don't need a session in this case..
- self.vpp_session.remove_vpp_config()
+ bfd_session_up(self)
+ stats_before = bfd_grab_stats_snapshot(self)
self.pg0.enable_capture()
echo_packet_count = 10
# random source port low enough to increment a few times..
self.logger.debug(ppp("Sending packet:", echo_packet))
self.pg0.add_stream(echo_packet)
self.pg_start()
- for dummy in range(echo_packet_count):
+ self.logger.debug(self.vapi.ppcli("show trace"))
+ counter = 0
+ bfd_control_packets_rx = 0
+ while counter < 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.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]
+ if udp.dport == BFD.udp_dport:
+ bfd_control_packets_rx += 1
+ continue
+ self.assert_equal(self.pg0.remote_ip4, ip.src, "Source IP")
self.assert_equal(udp.dport, BFD.udp_dport_echo,
"UDP destination port")
self.assert_equal(udp.sport, udp_sport_rx, "UDP source port")
self.assertEqual(scapy.compat.raw(p[UDP].payload),
scapy.compat.raw(echo_packet[UDP].payload),
"Received packet is not the echo packet sent")
+ counter += 1
self.assert_equal(udp_sport_tx, udp_sport_rx, "UDP source port (== "
"ECHO packet identifier for test purposes)")
+ stats_after = bfd_grab_stats_snapshot(self)
+ diff = bfd_stats_diff(stats_before, stats_after)
+ self.assertEqual(
+ 0, diff.rx, "RX counter bumped but no BFD packets sent")
+ self.assertEqual(
+ bfd_control_packets_rx, diff.tx, "TX counter incorrect")
+ self.assertEqual(0, diff.rx_echo,
+ "RX echo counter bumped but no BFD session exists")
+ self.assertEqual(0, diff.tx_echo,
+ "TX echo counter bumped but no BFD session exists")
def test_echo(self):
""" echo function """
+ stats_before = bfd_grab_stats_snapshot(self)
bfd_session_up(self)
self.test_session.update(required_min_echo_rx=150000)
self.test_session.send_packet()
"ECHO packet destination MAC address")
p[Ether].dst = self.pg0.local_mac
self.pg0.add_stream(p)
+ self.test_session.rx_packets_echo += 1
+ self.test_session.tx_packets_echo += 1
self.pg_start()
echo_seen = True
elif p.haslayer(BFD):
+ self.test_session.rx_packets += 1
if echo_seen:
self.assertGreaterEqual(
p[BFD].required_min_rx_interval,
self.test_session.send_packet()
self.assertTrue(echo_seen, "No echo packets received")
- @unittest.skipUnless(running_extended_tests, "part of extended tests")
+ stats_after = bfd_grab_stats_snapshot(self)
+ diff = bfd_stats_diff(stats_before, stats_after)
+ # our rx is vpp tx and vice versa, also tolerate one packet off
+ self.assert_in_range(self.test_session.tx_packets,
+ diff.rx - 1, diff.rx + 1, "RX counter")
+ self.assert_in_range(self.test_session.rx_packets,
+ diff.tx - 1, diff.tx + 1, "TX counter")
+ self.assert_in_range(self.test_session.tx_packets_echo,
+ diff.rx_echo - 1, diff.rx_echo + 1,
+ "RX echo counter")
+ self.assert_in_range(self.test_session.rx_packets_echo,
+ diff.tx_echo - 1, diff.tx_echo + 1,
+ "TX echo counter")
+
def test_echo_fail(self):
""" session goes down if echo function fails """
bfd_session_up(self)
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)
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)
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.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.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")
+ e = self.vapi.wait_for_event(1, "bfd_udp_session_event")
verify_event(self, e, expected_state=BFDState.admin_down)
for dummy in range(2):
p = wait_for_bfd_packet(self)
self.assert_equal(p[BFD].state, BFDState.admin_down, BFDState)
self.vpp_session.admin_up()
self.test_session.update(state=BFDState.down)
- e = self.vapi.wait_for_event(1, "bfd_udp_session_details")
+ e = self.vapi.wait_for_event(1, "bfd_udp_session_event")
verify_event(self, e, expected_state=BFDState.down)
p = wait_for_bfd_packet(
self, pcap_time_min=time.time() - self.vpp_clock_offset)
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")
+ e = self.vapi.wait_for_event(1, "bfd_udp_session_event")
verify_event(self, e, expected_state=BFDState.init)
self.test_session.update(state=BFDState.up)
self.test_session.send_packet()
p = wait_for_bfd_packet(
self, pcap_time_min=time.time() - self.vpp_clock_offset)
self.assert_equal(p[BFD].state, BFDState.up, BFDState)
- e = self.vapi.wait_for_event(1, "bfd_udp_session_details")
+ e = self.vapi.wait_for_event(1, "bfd_udp_session_event")
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)
vpp_session.add_vpp_config()
vpp_session.admin_up()
intf.remove_vpp_config()
- e = self.vapi.wait_for_event(1, "bfd_udp_session_details")
+ e = self.vapi.wait_for_event(1, "bfd_udp_session_event")
self.assert_equal(e.sw_if_index, sw_if_index, "sw_if_index")
self.assertFalse(vpp_session.query_vpp_config())
-@unittest.skipUnless(running_extended_tests, "part of extended tests")
+@tag_run_solo
+@tag_fixme_vpp_workers
class BFD6TestCase(VppTestCase):
"""Bidirectional Forwarding Detection (BFD) (IPv6) """
self.vapi.want_bfd_events()
self.pg0.enable_capture()
try:
+ self.bfd_udp4_sessions = self.statistics['/bfd/udp4/sessions']
+ self.bfd_udp6_sessions = self.statistics['/bfd/udp6/sessions']
self.vpp_session = VppBFDUDPSession(self, self.pg0,
self.pg0.remote_ip6,
af=AF_INET6)
def test_session_up(self):
""" bring BFD session up """
bfd_session_up(self)
+ bfd_udp4_sessions = self.statistics['/bfd/udp4/sessions']
+ bfd_udp6_sessions = self.statistics['/bfd/udp6/sessions']
+ self.assert_equal(bfd_udp4_sessions, self.bfd_udp4_sessions)
+ self.assert_equal(bfd_udp6_sessions - self.bfd_udp6_sessions, 1)
def test_session_up_by_ip(self):
""" bring BFD session up - first frame looked up by address pair """
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")
+ e = self.vapi.wait_for_event(1, "bfd_udp_session_event")
verify_event(self, e, expected_state=BFDState.init)
self.logger.info("BFD: Sending Up")
self.test_session.send_packet()
self.logger.info("BFD: Waiting for event")
- e = self.vapi.wait_for_event(1, "bfd_udp_session_details")
+ e = self.vapi.wait_for_event(1, "bfd_udp_session_event")
verify_event(self, e, expected_state=BFDState.up)
self.logger.info("BFD: Session is Up")
self.test_session.update(state=BFDState.up)
self.test_session.send_packet()
self.assert_equal(self.vpp_session.state, BFDState.up, BFDState)
- @unittest.skipUnless(running_extended_tests, "part of extended tests")
def test_hold_up(self):
""" hold BFD session up """
bfd_session_up(self)
def test_echo_looped_back(self):
""" echo packets looped back """
- # don't need a session in this case..
- self.vpp_session.remove_vpp_config()
+ bfd_session_up(self)
+ stats_before = bfd_grab_stats_snapshot(self)
self.pg0.enable_capture()
echo_packet_count = 10
# random source port low enough to increment a few times..
self.logger.debug(ppp("Sending packet:", echo_packet))
self.pg0.add_stream(echo_packet)
self.pg_start()
- for dummy in range(echo_packet_count):
+ counter = 0
+ bfd_control_packets_rx = 0
+ while counter < 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.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]
+ if udp.dport == BFD.udp_dport:
+ bfd_control_packets_rx += 1
+ continue
+ self.assert_equal(self.pg0.remote_ip6, ip.src, "Source IP")
self.assert_equal(udp.dport, BFD.udp_dport_echo,
"UDP destination port")
self.assert_equal(udp.sport, udp_sport_rx, "UDP source port")
self.assertEqual(scapy.compat.raw(p[UDP].payload),
scapy.compat.raw(echo_packet[UDP].payload),
"Received packet is not the echo packet sent")
+ counter += 1
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)")
+ stats_after = bfd_grab_stats_snapshot(self)
+ diff = bfd_stats_diff(stats_before, stats_after)
+ self.assertEqual(
+ 0, diff.rx, "RX counter bumped but no BFD packets sent")
+ self.assertEqual(bfd_control_packets_rx,
+ diff.tx, "TX counter incorrect")
+ self.assertEqual(0, diff.rx_echo,
+ "RX echo counter bumped but no BFD session exists")
+ self.assertEqual(0, diff.tx_echo,
+ "TX echo counter bumped but no BFD session exists")
def test_echo(self):
""" echo function """
+ stats_before = bfd_grab_stats_snapshot(self)
bfd_session_up(self)
self.test_session.update(required_min_echo_rx=150000)
self.test_session.send_packet()
self.logger.debug(ppp("Looping back packet:", p))
self.assert_equal(p[Ether].dst, self.pg0.remote_mac,
"ECHO packet destination MAC address")
+ self.test_session.rx_packets_echo += 1
+ self.test_session.tx_packets_echo += 1
p[Ether].dst = self.pg0.local_mac
self.pg0.add_stream(p)
self.pg_start()
echo_seen = True
elif p.haslayer(BFD):
+ self.test_session.rx_packets += 1
if echo_seen:
self.assertGreaterEqual(
p[BFD].required_min_rx_interval,
self.test_session.send_packet()
self.assertTrue(echo_seen, "No echo packets received")
+ stats_after = bfd_grab_stats_snapshot(self)
+ diff = bfd_stats_diff(stats_before, stats_after)
+ # our rx is vpp tx and vice versa, also tolerate one packet off
+ self.assert_in_range(self.test_session.tx_packets,
+ diff.rx - 1, diff.rx + 1, "RX counter")
+ self.assert_in_range(self.test_session.rx_packets,
+ diff.tx - 1, diff.tx + 1, "TX counter")
+ self.assert_in_range(self.test_session.tx_packets_echo,
+ diff.rx_echo - 1, diff.rx_echo + 1,
+ "RX echo counter")
+ self.assert_in_range(self.test_session.rx_packets_echo,
+ diff.tx_echo - 1, diff.tx_echo + 1,
+ "TX echo counter")
+
def test_intf_deleted(self):
""" interface with bfd session deleted """
intf = VppLoInterface(self)
vpp_session.add_vpp_config()
vpp_session.admin_up()
intf.remove_vpp_config()
- e = self.vapi.wait_for_event(1, "bfd_udp_session_details")
+ e = self.vapi.wait_for_event(1, "bfd_udp_session_event")
self.assert_equal(e.sw_if_index, sw_if_index, "sw_if_index")
self.assertFalse(vpp_session.query_vpp_config())
-@unittest.skipUnless(running_extended_tests, "part of extended tests")
+@tag_run_solo
class BFDFIBTestCase(VppTestCase):
""" BFD-FIB interactions (IPv6) """
bfd_session_down(self)
-@unittest.skipUnless(running_extended_tests, "part of extended tests")
+@tag_run_solo
class BFDSHA1TestCase(VppTestCase):
"""Bidirectional Forwarding Detection (BFD) (SHA1 auth) """
bfd_key_id=self.vpp_session.bfd_key_id)
bfd_session_up(self)
- @unittest.skipUnless(running_extended_tests, "part of extended tests")
def test_hold_up(self):
""" hold BFD session up """
key = self.factory.create_random_key(self)
self.test_session.send_packet()
self.assert_equal(self.vpp_session.state, BFDState.up, BFDState)
- @unittest.skipUnless(running_extended_tests, "part of extended tests")
def test_hold_up_meticulous(self):
""" hold BFD session up - meticulous auth """
key = self.factory.create_random_key(
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(
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)
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)
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)
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.test_session.vpp_seq_number = None
# now throw away any pending packets
self.pg0.enable_capture()
+ self.test_session.my_discriminator = 0
bfd_session_up(self)
-@unittest.skipUnless(running_extended_tests, "part of extended tests")
+@tag_run_solo
class BFDAuthOnOffTestCase(VppTestCase):
"""Bidirectional Forwarding Detection (BFD) (changing auth) """
"number of bfd events")
-@unittest.skipUnless(running_extended_tests, "part of extended tests")
+@tag_run_solo
class BFDCLITestCase(VppTestCase):
"""Bidirectional Forwarding Detection (BFD) (CLI) """
pg0 = None
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):
"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))
+ echo_ip4 = str(ipaddress.IPv4Address(int(ipaddress.IPv4Address(
+ self.loopback0.local_ip4)) ^ 1))
self.cli_verify_response("show bfd echo-source",
"UDP echo source is: %s\n"
"IPv4 address usable as echo source: %s\n"
"IPv6 address usable as echo source: none" %
(self.loopback0.name, echo_ip4))
- unpacked = unpack("!LLLL", self.loopback0.local_ip6n)
- echo_ip6 = inet_ntop(AF_INET6, pack("!LLLL", unpacked[0], unpacked[1],
- unpacked[2], unpacked[3] ^ 1))
+ echo_ip6 = str(ipaddress.IPv6Address(int(ipaddress.IPv6Address(
+ self.loopback0.local_ip6)) ^ 1))
self.loopback0.config_ip6()
self.cli_verify_response("show bfd echo-source",
"UDP echo source is: %s\n"
Code Review / vpp.git / blobdiff