-#!/usr/bin/env python
+#!/usr/bin/env python3
""" BFD tests """
from __future__ import division
import scapy.compat
from scapy.layers.inet import UDP, IP
from scapy.layers.inet6 import IPv6
-from scapy.layers.l2 import Ether
+from scapy.layers.l2 import Ether, GRE
from scapy.packet import Raw
from bfd import VppBFDAuthKey, BFD, BFDAuthType, VppBFDUDPSession, \
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_papi_provider import UnexpectedApiReturnValueError, \
+ CliFailedCommandError
from vpp_pg_interface import CaptureTimeoutError, is_ipv6_misc
+from vpp_gre_interface import VppGreInterface
+from vpp_papi import VppEnum
USEC_IN_SEC = 1000000
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)
+ self.vapi.bfd_udp_set_echo_source(
+ sw_if_index=self.loopback0.sw_if_index)
echo_source = self.vapi.bfd_udp_get_echo_source()
self.assertTrue(echo_source.is_set)
self.assertEqual(echo_source.sw_if_index, self.loopback0.sw_if_index)
self.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.assertEqual(echo_source.ip4_addr.packed, echo_ip4)
self.assertFalse(echo_source.have_usable_ip6)
self.loopback0.config_ip6()
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.assertEqual(echo_source.ip4_addr.packed, echo_ip4)
self.assertTrue(echo_source.have_usable_ip6)
- self.assertEqual(echo_source.ip6_addr, echo_ip6)
+ self.assertEqual(echo_source.ip6_addr.packed, echo_ip6)
self.vapi.bfd_udp_del_echo_source()
echo_source = self.vapi.bfd_udp_get_echo_source()
""" BFD session as seen from test framework side """
def __init__(self, test, interface, af, detect_mult=3, sha1_key=None,
- bfd_key_id=None, our_seq_number=None):
+ bfd_key_id=None, our_seq_number=None,
+ tunnel_header=None, phy_interface=None):
self.test = test
self.af = af
self.sha1_key = sha1_key
self.bfd_key_id = bfd_key_id
self.interface = interface
+ if phy_interface:
+ self.phy_interface = phy_interface
+ else:
+ self.phy_interface = self.interface
self.udp_sport = randint(49152, 65535)
if our_seq_number is None:
self.our_seq_number = randint(0, 40000000)
self.your_discriminator = None
self.state = BFDState.down
self.auth_type = BFDAuthType.no_auth
+ self.tunnel_header = tunnel_header
def inc_seq_num(self):
""" increment sequence number, wrapping if needed """
bfd.length = BFD.sha1_auth_len + BFD.bfd_pkt_len
else:
bfd = BFD()
+ packet = Ether(src=self.phy_interface.remote_mac,
+ dst=self.phy_interface.local_mac)
+ if self.tunnel_header:
+ packet = packet / self.tunnel_header
if self.af == AF_INET6:
- packet = (Ether(src=self.interface.remote_mac,
- dst=self.interface.local_mac) /
+ packet = (packet /
IPv6(src=self.interface.remote_ip6,
dst=self.interface.local_ip6,
hlim=255) /
UDP(sport=self.udp_sport, dport=BFD.udp_dport) /
bfd)
else:
- packet = (Ether(src=self.interface.remote_mac,
- dst=self.interface.local_mac) /
+ packet = (packet /
IP(src=self.interface.remote_ip4,
dst=self.interface.local_ip4,
ttl=255) /
if packet is None:
packet = self.create_packet()
if interface is None:
- interface = self.test.pg0
+ interface = self.phy_interface
self.test.logger.debug(ppp("Sending packet:", packet))
interface.add_stream(packet)
self.test.pg_start()
def bfd_session_up(test):
""" Bring BFD session up """
test.logger.info("BFD: Waiting for slow hello")
- p = wait_for_bfd_packet(test, 2)
+ p = wait_for_bfd_packet(test, 2, is_tunnel=test.vpp_session.is_tunnel)
old_offset = None
if hasattr(test, 'vpp_clock_offset'):
old_offset = test.vpp_clock_offset
""" Verify correctness of IP layer. """
if test.vpp_session.af == AF_INET6:
ip = packet[IPv6]
- local_ip = test.pg0.local_ip6
- remote_ip = test.pg0.remote_ip6
+ local_ip = test.vpp_session.interface.local_ip6
+ remote_ip = test.vpp_session.interface.remote_ip6
test.assert_equal(ip.hlim, 255, "IPv6 hop limit")
else:
ip = packet[IP]
- local_ip = test.pg0.local_ip4
- remote_ip = test.pg0.remote_ip4
+ local_ip = test.vpp_session.interface.local_ip4
+ remote_ip = test.vpp_session.interface.remote_ip4
test.assert_equal(ip.ttl, 255, "IPv4 TTL")
test.assert_equal(ip.src, local_ip, "IP source address")
test.assert_equal(ip.dst, remote_ip, "IP destination address")
test.assert_equal(e.sw_if_index,
test.vpp_session.interface.sw_if_index,
"BFD interface index")
- is_ipv6 = 0
- if test.vpp_session.af == AF_INET6:
- is_ipv6 = 1
- test.assert_equal(e.is_ipv6, is_ipv6, "is_ipv6")
- if test.vpp_session.af == AF_INET:
- test.assert_equal(e.local_addr[:4], test.vpp_session.local_addr_n,
- "Local IPv4 address")
- test.assert_equal(e.peer_addr[:4], test.vpp_session.peer_addr_n,
- "Peer IPv4 address")
- else:
- test.assert_equal(e.local_addr, test.vpp_session.local_addr_n,
- "Local IPv6 address")
- test.assert_equal(e.peer_addr, test.vpp_session.peer_addr_n,
- "Peer IPv6 address")
+
+ test.assert_equal(str(e.local_addr), test.vpp_session.local_addr,
+ "Local IPv6 address")
+ test.assert_equal(str(e.peer_addr), test.vpp_session.peer_addr,
+ "Peer IPv6 address")
test.assert_equal(e.state, expected_state, BFDState)
-def wait_for_bfd_packet(test, timeout=1, pcap_time_min=None):
+def wait_for_bfd_packet(test, timeout=1, pcap_time_min=None, is_tunnel=False):
""" wait for BFD packet and verify its correctness
:param timeout: how long to wait
(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))
self.vpp_session.add_vpp_config()
self.vpp_session.admin_up()
self.test_session = BFDTestSession(self, self.pg0, AF_INET)
- except:
+ except BaseException:
self.vapi.want_bfd_events(enable_disable=0)
raise
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)
+ self.vapi.bfd_udp_set_echo_source(
+ sw_if_index=self.loopback0.sw_if_index)
echo_seen = False
# should be turned on - loopback echo packets
for dummy in range(3):
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)
+ self.vapi.bfd_udp_set_echo_source(
+ sw_if_index=self.loopback0.sw_if_index)
# echo function should be used now, but we will drop the echo packets
verified_diag = False
for dummy in range(3):
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)
+ self.vapi.bfd_udp_set_echo_source(
+ sw_if_index=self.loopback0.sw_if_index)
# wait for first echo packet
while True:
p = self.pg0.wait_for_packet(1)
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)
+ self.vapi.bfd_udp_set_echo_source(
+ sw_if_index=self.loopback0.sw_if_index)
# wait for first echo packet
while True:
p = self.pg0.wait_for_packet(1)
""" 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.vapi.bfd_udp_set_echo_source(
+ sw_if_index=self.loopback0.sw_if_index)
self.test_session.send_packet()
# should be turned on - loopback echo packets
echo_packet = None
""" 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.vapi.bfd_udp_set_echo_source(
+ sw_if_index=self.loopback0.sw_if_index)
self.test_session.send_packet()
# should be turned on - loopback echo packets
timeout_at = None
self.vpp_session.admin_up()
self.test_session = BFDTestSession(self, self.pg0, AF_INET6)
self.logger.debug(self.vapi.cli("show adj nbr"))
- except:
+ except BaseException:
self.vapi.want_bfd_events(enable_disable=0)
raise
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)
+ self.vapi.bfd_udp_set_echo_source(
+ sw_if_index=self.loopback0.sw_if_index)
echo_seen = False
# should be turned on - loopback echo packets
for dummy in range(3):
def tearDown(self):
if not self.vpp_dead:
- self.vapi.want_bfd_events(enable_disable=0)
+ self.vapi.want_bfd_events(enable_disable=False)
super(BFDFIBTestCase, self).tearDown()
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)),
+ Raw(b'\xa5' * 100)),
(Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IPv6(src="3001::1", dst="2002::1") /
UDP(sport=1234, dport=1234) /
- Raw('\xa5' * 100))]
+ Raw(b'\xa5' * 100))]
# A recursive and a non-recursive route via a next-hop that
# will have a BFD session
ip_2001_s_64 = VppIpRoute(self, "2001::", 64,
[VppRoutePath(self.pg0.remote_ip6,
- self.pg0.sw_if_index,
- proto=DpoProto.DPO_PROTO_IP6)],
- is_ip6=1)
+ self.pg0.sw_if_index)])
ip_2002_s_64 = VppIpRoute(self, "2002::", 64,
[VppRoutePath(self.pg0.remote_ip6,
- 0xffffffff,
- proto=DpoProto.DPO_PROTO_IP6)],
- is_ip6=1)
+ 0xffffffff)])
ip_2001_s_64.add_vpp_config()
ip_2002_s_64.add_vpp_config()
packet[IPv6].dst)
+@unittest.skipUnless(running_extended_tests, "part of extended tests")
+class BFDTunTestCase(VppTestCase):
+ """ BFD over GRE tunnel """
+
+ vpp_session = None
+ test_session = None
+
+ @classmethod
+ def setUpClass(cls):
+ super(BFDTunTestCase, cls).setUpClass()
+
+ @classmethod
+ def tearDownClass(cls):
+ super(BFDTunTestCase, cls).tearDownClass()
+
+ def setUp(self):
+ super(BFDTunTestCase, self).setUp()
+ self.create_pg_interfaces(range(1))
+
+ self.vapi.want_bfd_events()
+ self.pg0.enable_capture()
+
+ for i in self.pg_interfaces:
+ i.admin_up()
+ i.config_ip4()
+ i.resolve_arp()
+
+ def tearDown(self):
+ if not self.vpp_dead:
+ self.vapi.want_bfd_events(enable_disable=0)
+
+ super(BFDTunTestCase, self).tearDown()
+
+ @staticmethod
+ def pkt_is_not_data_traffic(p):
+ """ not data traffic implies BFD or the usual IPv6 ND/RA"""
+ if p.haslayer(BFD) or is_ipv6_misc(p):
+ return True
+ return False
+
+ def test_bfd_o_gre(self):
+ """ BFD-o-GRE """
+
+ # A GRE interface over which to run a BFD session
+ gre_if = VppGreInterface(self,
+ self.pg0.local_ip4,
+ self.pg0.remote_ip4)
+ gre_if.add_vpp_config()
+ gre_if.admin_up()
+ gre_if.config_ip4()
+
+ # bring the session up now the routes are present
+ self.vpp_session = VppBFDUDPSession(self,
+ gre_if,
+ gre_if.remote_ip4,
+ is_tunnel=True)
+ self.vpp_session.add_vpp_config()
+ self.vpp_session.admin_up()
+
+ self.test_session = BFDTestSession(
+ self, gre_if, AF_INET,
+ tunnel_header=(IP(src=self.pg0.remote_ip4,
+ dst=self.pg0.local_ip4) /
+ GRE()),
+ phy_interface=self.pg0)
+
+ # packets to match against both of the routes
+ p = [(Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+ IP(src=self.pg0.remote_ip4, dst=gre_if.remote_ip4) /
+ UDP(sport=1234, dport=1234) /
+ Raw(b'\xa5' * 100))]
+
+ # session is up - traffic passes
+ bfd_session_up(self)
+
+ self.send_and_expect(self.pg0, p, self.pg0)
+
+ # bring session down
+ bfd_session_down(self)
+
+
@unittest.skipUnless(running_extended_tests, "part of extended tests")
class BFDSHA1TestCase(VppTestCase):
"""Bidirectional Forwarding Detection (BFD) (SHA1 auth) """
def tearDown(self):
if not self.vpp_dead:
- self.vapi.want_bfd_events(enable_disable=0)
+ self.vapi.want_bfd_events(enable_disable=False)
self.vapi.collect_events() # clear the event queue
super(BFDSHA1TestCase, self).tearDown()
def tearDown(self):
if not self.vpp_dead:
- self.vapi.want_bfd_events(enable_disable=0)
+ self.vapi.want_bfd_events(enable_disable=False)
self.vapi.collect_events() # clear the event queue
super(BFDAuthOnOffTestCase, self).tearDown()
def tearDown(self):
try:
- self.vapi.want_bfd_events(enable_disable=0)
+ self.vapi.want_bfd_events(enable_disable=False)
except UnexpectedApiReturnValueError:
# some tests aren't subscribed, so this is not an issue
pass
def cli_verify_response(self, cli, expected):
""" execute a CLI, asserting that the response matches expectation """
- self.assert_equal(self.vapi.cli(cli).strip(),
+ try:
+ reply = self.vapi.cli(cli)
+ except CliFailedCommandError as cli_error:
+ reply = str(cli_error)
+ self.assert_equal(reply.strip(),
expected,
"CLI command response")
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