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
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
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,
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) """
Code Review / vpp.git / blobdiff