diff options
Diffstat (limited to 'test/test_bfd.py')
| -rw-r--r-- | test/test_bfd.py | 104 |
1 files changed, 103 insertions, 1 deletions
diff --git a/test/test_bfd.py b/test/test_bfd.py index c9d0abdd91d..e8f8f33849f 100644 --- a/test/test_bfd.py +++ b/test/test_bfd.py @@ -16,9 +16,10 @@ from scapy.layers.inet6 import IPv6 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 vpp_pg_interface import CaptureTimeoutError, is_ipv6_misc from util import ppp from vpp_papi_provider import UnexpectedApiReturnValueError +from vpp_ip_route import VppIpRoute, VppRoutePath USEC_IN_SEC = 1000000 @@ -1582,6 +1583,107 @@ class BFD6TestCase(VppTestCase): self.test_session.send_packet() +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, + is_ip6=1)], + is_ip6=1) + ip_2002_s_64 = VppIpRoute(self, "2002::", 64, + [VppRoutePath(self.pg0.remote_ip6, + 0xffffffff, + is_ip6=1)], + 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) + + class BFDSHA1TestCase(VppTestCase): """Bidirectional Forwarding Detection (BFD) (SHA1 auth) """ |