+ VppTestCase.tearDown(self)
+
+ def test_session_up(self):
+ """ bring BFD session up """
+ self.bfd_session_up()
+
+ def test_hold_up(self):
+ """ hold BFD session up """
+ self.bfd_session_up()
+ for i in range(5):
+ self.wait_for_bfd_packet()
+ 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)
+
+
+class BFDSHA1TestCase(VppTestCase, BFDCommonCode):
+ """Bidirectional Forwarding Detection (BFD) (SHA1 auth) """
+
+ @classmethod
+ def setUpClass(cls):
+ super(BFDSHA1TestCase, cls).setUpClass()
+ 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
+
+ def setUp(self):
+ super(BFDSHA1TestCase, self).setUp()
+ self.factory = AuthKeyFactory()
+ self.vapi.want_bfd_events()
+
+ def tearDown(self):
+ BFDCommonCode.tearDown(self)
+ VppTestCase.tearDown(self)
+
+ def test_session_up(self):
+ """ bring BFD session up """
+ key = self.factory.create_random_key(self)
+ key.add_vpp_config()
+ self.vpp_session = VppBFDUDPSession(self, self.pg0,
+ self.pg0.remote_ip4,
+ sha1_key=key)
+ self.vpp_session.add_vpp_config()
+ self.vpp_session.admin_up()
+ self.test_session = BFDTestSession(
+ self, self.pg0, AF_INET, sha1_key=key,
+ bfd_key_id=self.vpp_session.bfd_key_id)
+ self.bfd_session_up()
+
+ def test_hold_up(self):
+ """ hold BFD session up """
+ key = self.factory.create_random_key(self)
+ key.add_vpp_config()
+ self.vpp_session = VppBFDUDPSession(self, self.pg0,
+ self.pg0.remote_ip4,
+ sha1_key=key)
+ self.vpp_session.add_vpp_config()
+ self.vpp_session.admin_up()
+ self.test_session = BFDTestSession(
+ self, self.pg0, AF_INET, sha1_key=key,
+ bfd_key_id=self.vpp_session.bfd_key_id)
+ self.bfd_session_up()
+ for i in range(5):
+ self.wait_for_bfd_packet()
+ self.test_session.send_packet()
+ self.assert_equal(self.vpp_session.state, BFDState.up, BFDState)
+
+ def test_hold_up_meticulous(self):
+ """ hold BFD session up - meticulous auth """
+ key = self.factory.create_random_key(
+ self, BFDAuthType.meticulous_keyed_sha1)
+ key.add_vpp_config()
+ self.vpp_session = VppBFDUDPSession(self, self.pg0,
+ self.pg0.remote_ip4, sha1_key=key)
+ self.vpp_session.add_vpp_config()
+ self.vpp_session.admin_up()
+ self.test_session = BFDTestSession(
+ self, self.pg0, AF_INET, sha1_key=key,
+ bfd_key_id=self.vpp_session.bfd_key_id)
+ self.bfd_session_up()
+ for i in range(5):
+ self.wait_for_bfd_packet()
+ self.test_session.inc_seq_num()
+ self.test_session.send_packet()
+ self.assert_equal(self.vpp_session.state, BFDState.up, BFDState)
+
+ def test_send_bad_seq_number(self):
+ """ session is not kept alive by msgs with bad seq 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.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)
+ self.bfd_session_up()
+ self.wait_for_bfd_packet()
+ self.test_session.send_packet()
+ self.assert_equal(len(self.vapi.collect_events()), 0,
+ "number of bfd events")
+ self.wait_for_bfd_packet()
+ self.test_session.send_packet()
+ self.assert_equal(len(self.vapi.collect_events()), 0,
+ "number of bfd events")
+ self.wait_for_bfd_packet()
+ self.test_session.send_packet()
+ self.wait_for_bfd_packet()
+ self.test_session.send_packet()
+ 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")
+ self.verify_event(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.vpp_session.admin_up()
+ self.test_session = legitimate_test_session
+ # bring vpp session up
+ self.bfd_session_up()
+ # send packet from rogue session
+ rogue_test_session.bfd_values = self.test_session.bfd_values.copy()
+ if rogue_bfd_values:
+ rogue_test_session.update(**rogue_bfd_values)
+ rogue_test_session.update(state=BFDState.down)
+ rogue_test_session.send_packet()
+ self.wait_for_bfd_packet()
+ self.assert_equal(self.vpp_session.state, BFDState.up, BFDState)
+
+ def test_mismatch_auth(self):
+ """ session is not brought down by unauthenticated msg """
+ key = self.factory.create_random_key(self)
+ key.add_vpp_config()
+ vpp_session = VppBFDUDPSession(
+ self, self.pg0, self.pg0.remote_ip4, sha1_key=key)
+ legitimate_test_session = BFDTestSession(
+ self, self.pg0, AF_INET, sha1_key=key,
+ bfd_key_id=vpp_session.bfd_key_id)
+ rogue_test_session = BFDTestSession(self, self.pg0, AF_INET)
+ self.execute_rogue_session_scenario(vpp_session,
+ legitimate_test_session,
+ rogue_test_session)
+
+ def test_mismatch_bfd_key_id(self):
+ """ session is not brought down by msg with non-existent key-id """
+ key = self.factory.create_random_key(self)
+ key.add_vpp_config()
+ vpp_session = VppBFDUDPSession(
+ self, self.pg0, self.pg0.remote_ip4, sha1_key=key)
+ # pick a different random bfd key id
+ x = randint(0, 255)
+ while x == vpp_session.bfd_key_id:
+ x = randint(0, 255)
+ legitimate_test_session = BFDTestSession(
+ self, self.pg0, AF_INET, sha1_key=key,
+ bfd_key_id=vpp_session.bfd_key_id)
+ rogue_test_session = BFDTestSession(
+ self, self.pg0, AF_INET, sha1_key=key, bfd_key_id=x)
+ self.execute_rogue_session_scenario(vpp_session,
+ legitimate_test_session,
+ rogue_test_session)
+
+ def test_mismatched_auth_type(self):
+ """ session is not brought down by msg with wrong auth type """
+ key = self.factory.create_random_key(self)
+ key.add_vpp_config()
+ vpp_session = VppBFDUDPSession(
+ self, self.pg0, self.pg0.remote_ip4, sha1_key=key)
+ legitimate_test_session = BFDTestSession(
+ self, self.pg0, AF_INET, sha1_key=key,
+ bfd_key_id=vpp_session.bfd_key_id)
+ rogue_test_session = BFDTestSession(
+ self, self.pg0, AF_INET, sha1_key=key,
+ bfd_key_id=vpp_session.bfd_key_id)
+ self.execute_rogue_session_scenario(
+ vpp_session, legitimate_test_session, rogue_test_session,
+ {'auth_type': BFDAuthType.keyed_md5})
+
+ def test_restart(self):
+ """ simulate remote peer restart and resynchronization """
+ key = self.factory.create_random_key(
+ self, BFDAuthType.meticulous_keyed_sha1)
+ key.add_vpp_config()
+ self.vpp_session = VppBFDUDPSession(self, self.pg0,
+ self.pg0.remote_ip4, sha1_key=key)
+ self.vpp_session.add_vpp_config()
+ self.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, our_seq_number=0)
+ self.bfd_session_up()
+ # now we need to not respond for 2*detection_time (4 packets)
+ self.wait_for_bfd_packet()
+ self.assert_equal(len(self.vapi.collect_events()), 0,
+ "number of bfd events")
+ self.wait_for_bfd_packet()
+ 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)
+ self.test_session.update(state=BFDState.down)
+ self.wait_for_bfd_packet()
+ self.assert_equal(len(self.vapi.collect_events()), 0,
+ "number of bfd events")
+ self.wait_for_bfd_packet()
+ self.assert_equal(len(self.vapi.collect_events()), 0,
+ "number of bfd events")
+ # reset sequence number
+ self.test_session.our_seq_number = 0
+ self.bfd_session_up()
+
+
+class BFDAuthOnOffTestCase(VppTestCase, BFDCommonCode):
+ """Bidirectional Forwarding Detection (BFD) (changing auth) """
+
+ @classmethod
+ def setUpClass(cls):
+ super(BFDAuthOnOffTestCase, cls).setUpClass()
+ 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
+
+ def setUp(self):
+ super(BFDAuthOnOffTestCase, self).setUp()
+ self.factory = AuthKeyFactory()
+ self.vapi.want_bfd_events()
+
+ def tearDown(self):
+ BFDCommonCode.tearDown(self)
+ VppTestCase.tearDown(self)
+
+ 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.vpp_session.admin_up()
+ self.test_session = BFDTestSession(self, self.pg0, AF_INET)
+ self.bfd_session_up()
+ for i in range(5):
+ self.wait_for_bfd_packet()
+ 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 i in range(5):
+ self.wait_for_bfd_packet()
+ self.test_session.send_packet()
+ self.assert_equal(self.vpp_session.state, BFDState.up, BFDState)
+ self.assert_equal(len(self.vapi.collect_events()), 0,
+ "number of bfd events")
+
+ def test_auth_off_immediate(self):
+ """ turn auth off without disturbing session state (immediate) """
+ key = self.factory.create_random_key(self)
+ key.add_vpp_config()
+ self.vpp_session = VppBFDUDPSession(self, self.pg0,
+ self.pg0.remote_ip4, sha1_key=key)
+ self.vpp_session.add_vpp_config()
+ self.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)
+ self.bfd_session_up()
+ for i in range(5):
+ self.wait_for_bfd_packet()
+ self.test_session.send_packet()
+ self.vpp_session.deactivate_auth()
+ self.test_session.bfd_key_id = None
+ self.test_session.sha1_key = None
+ for i in range(5):
+ self.wait_for_bfd_packet()
+ self.test_session.send_packet()
+ self.assert_equal(self.vpp_session.state, BFDState.up, BFDState)
+ self.assert_equal(len(self.vapi.collect_events()), 0,
+ "number of bfd events")
+
+ def test_auth_change_key_immediate(self):
+ """ change auth key without disturbing session state (immediate) """
+ key1 = self.factory.create_random_key(self)
+ key1.add_vpp_config()
+ key2 = self.factory.create_random_key(self)
+ key2.add_vpp_config()
+ self.vpp_session = VppBFDUDPSession(self, self.pg0,
+ self.pg0.remote_ip4, sha1_key=key1)
+ self.vpp_session.add_vpp_config()
+ self.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)
+ self.bfd_session_up()
+ for i in range(5):
+ self.wait_for_bfd_packet()
+ 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 i in range(5):
+ self.wait_for_bfd_packet()
+ 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.vpp_session.admin_up()
+ self.test_session = BFDTestSession(self, self.pg0, AF_INET)
+ self.bfd_session_up()
+ for i in range(5):
+ self.wait_for_bfd_packet()
+ self.test_session.send_packet()
+ self.vpp_session.activate_auth(key, delayed=True)
+ for i in range(5):
+ self.wait_for_bfd_packet()
+ self.test_session.send_packet()
+ self.test_session.bfd_key_id = self.vpp_session.bfd_key_id
+ self.test_session.sha1_key = key
+ self.test_session.send_packet()
+ for i in range(5):
+ self.wait_for_bfd_packet()
+ 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.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)
+ self.bfd_session_up()
+ for i in range(5):
+ self.wait_for_bfd_packet()
+ self.test_session.send_packet()
+ self.vpp_session.deactivate_auth(delayed=True)
+ for i in range(5):
+ self.wait_for_bfd_packet()
+ self.test_session.send_packet()
+ self.test_session.bfd_key_id = None
+ self.test_session.sha1_key = None
+ self.test_session.send_packet()
+ for i in range(5):
+ self.wait_for_bfd_packet()
+ 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)
+ self.bfd_session_up()
+ for i in range(5):
+ self.wait_for_bfd_packet()
+ self.test_session.send_packet()
+ self.vpp_session.activate_auth(key2, delayed=True)
+ for i in range(5):
+ self.wait_for_bfd_packet()
+ 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 i in range(5):
+ self.wait_for_bfd_packet()
+ 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")