diff options
Diffstat (limited to 'test/test_bfd.py')
| -rw-r--r-- | test/test_bfd.py | 86 |
1 files changed, 62 insertions, 24 deletions
diff --git a/test/test_bfd.py b/test/test_bfd.py index 1ea69f5507b..4aa99533f41 100644 --- a/test/test_bfd.py +++ b/test/test_bfd.py @@ -7,6 +7,8 @@ from bfd import * from framework import * from util import ppp +us_in_sec = 1000000 + class BFDAPITestCase(VppTestCase): """Bidirectional Forwarding Detection (BFD) - API""" @@ -74,6 +76,7 @@ def verify_udp(test, packet): class BFDTestSession(object): + """ BFD session as seen from test framework side """ def __init__(self, test, interface, detect_mult=3): self.test = test @@ -90,7 +93,9 @@ class BFDTestSession(object): def create_packet(self): packet = create_packet(self.interface) + self.test.logger.debug("BFD: Creating packet") for name, value in self.bfd_values.iteritems(): + self.test.logger.debug("BFD: setting packet.%s=%s", name, value) packet[BFD].setfieldval(name, value) return packet @@ -134,11 +139,12 @@ class BFDTestCase(VppTestCase): self.vpp_session.add_vpp_config() self.vpp_session.admin_up() self.test_session = BFDTestSession(self, self.pg0) + self.test_session.update(required_min_rx_interval=100000) def tearDown(self): - self.vapi.want_bfd_events(enable_disable=0) self.vapi.collect_events() # clear the event queue if not self.vpp_dead: + self.vapi.want_bfd_events(enable_disable=0) self.vpp_session.remove_vpp_config() super(BFDTestCase, self).tearDown() @@ -167,8 +173,16 @@ class BFDTestCase(VppTestCase): self.assert_equal(e.state, expected_state, BFDState) def wait_for_bfd_packet(self, timeout=1): + """ wait for BFD packet + + :param timeout: how long to wait max + + :returns: tuple (packet, time spent waiting for packet) + """ self.logger.info("BFD: Waiting for BFD packet") + before = time.time() p = self.pg0.wait_for_packet(timeout=timeout) + after = time.time() bfd = p[BFD] if bfd is None: raise Exception(ppp("Unexpected or invalid BFD packet:", p)) @@ -177,7 +191,26 @@ class BFDTestCase(VppTestCase): verify_ip(self, p, self.pg0.local_ip4, self.pg0.remote_ip4) verify_udp(self, p) self.test_session.verify_packet(p) - return p + return p, after - before + + def bfd_session_up(self): + self.pg_enable_capture([self.pg0]) + self.logger.info("BFD: Waiting for slow hello") + p, ttp = self.wait_for_bfd_packet() + self.logger.info("BFD: Sending Init") + self.test_session.update(my_discriminator=randint(0, 40000000), + your_discriminator=p[BFD].my_discriminator, + state=BFDState.init) + self.test_session.send_packet() + self.logger.info("BFD: Waiting for event") + e = self.vapi.wait_for_event(1, "bfd_udp_session_details") + self.verify_event(e, expected_state=BFDState.up) + self.logger.info("BFD: Session is Up") + self.test_session.update(state=BFDState.up) + + def test_session_up(self): + """ bring BFD session up """ + self.bfd_session_up() def test_slow_timer(self): """ verify slow periodic control frames while session down """ @@ -198,7 +231,7 @@ class BFDTestCase(VppTestCase): def test_zero_remote_min_rx(self): """ no packets when zero BFD RemoteMinRxInterval """ self.pg_enable_capture([self.pg0]) - p = self.wait_for_bfd_packet(2) + p, timeout = self.wait_for_bfd_packet(2) self.test_session.update(my_discriminator=randint(0, 40000000), your_discriminator=p[BFD].my_discriminator, state=BFDState.init, @@ -213,26 +246,6 @@ class BFDTestCase(VppTestCase): return raise Exception(ppp("Received unexpected BFD packet:", p)) - def bfd_session_up(self): - self.pg_enable_capture([self.pg0]) - self.logger.info("BFD: Waiting for slow hello") - p = self.wait_for_bfd_packet(2) - self.logger.info("BFD: Sending Init") - self.test_session.update(my_discriminator=randint(0, 40000000), - your_discriminator=p[BFD].my_discriminator, - state=BFDState.init, - required_min_rx_interval=100000) - self.test_session.send_packet() - self.logger.info("BFD: Waiting for event") - e = self.vapi.wait_for_event(1, "bfd_udp_session_details") - self.verify_event(e, expected_state=BFDState.up) - self.logger.info("BFD: Session is Up") - self.test_session.update(state=BFDState.up) - - 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() @@ -260,7 +273,7 @@ class BFDTestCase(VppTestCase): self.test_session.send_packet() now = time.time() count = 0 - while time.time() < now + interval / 1000000: + while time.time() < now + interval / us_in_sec: try: p = self.wait_for_bfd_packet() if count > 1: @@ -270,6 +283,31 @@ class BFDTestCase(VppTestCase): pass self.assert_in_range(count, 0, 1, "number of packets received") + def test_immediate_remote_min_rx_reduce(self): + """ immediately honor remote min rx reduction """ + self.vpp_session.remove_vpp_config() + self.vpp_session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4, + desired_min_tx=10000) + self.vpp_session.add_vpp_config() + self.test_session.update(desired_min_tx_interval=1000000, + required_min_rx_interval=1000000) + self.bfd_session_up() + self.wait_for_bfd_packet() + interval = 100000 + self.test_session.update(required_min_rx_interval=interval) + self.test_session.send_packet() + p, ttp = self.wait_for_bfd_packet() + # allow extra 10% to work around timing issues, first packet is special + self.assert_in_range(ttp, 0, 1.10 * interval / us_in_sec, + "time between BFD packets") + p, ttp = self.wait_for_bfd_packet() + self.assert_in_range(ttp, .9 * .75 * interval / us_in_sec, + 1.10 * interval / us_in_sec, + "time between BFD packets") + p, ttp = self.wait_for_bfd_packet() + self.assert_in_range(ttp, .9 * .75 * interval / us_in_sec, + 1.10 * interval / us_in_sec, + "time between BFD packets") if __name__ == '__main__': unittest.main(testRunner=VppTestRunner) |