Function bfd_session_up

test/test_bfd.py:872–912

Bring BFD session up

(test)

def bfd_session_up(test):
    """Bring BFD session up"""
    test.logger.info("BFD: Waiting for slow hello")
    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
    test.vpp_clock_offset = time.time() - float(p.time)
    test.logger.debug("BFD: Calculated vpp clock offset: %s", test.vpp_clock_offset)
    if old_offset:
        test.assertAlmostEqual(
            old_offset,
            test.vpp_clock_offset,
            delta=0.5,
            msg="vpp clock offset not stable (new: %s, old: %s)"
            % (test.vpp_clock_offset, old_offset),
        )
    test.logger.info("BFD: Sending Init")
    test.test_session.update(
        my_discriminator=randint(0, 40000000),
        your_discriminator=p[BFD].my_discriminator,
        state=BFDState.init,
    )
    if (
        test.test_session.sha1_key
        and test.test_session.sha1_key.auth_type == BFDAuthType.meticulous_keyed_sha1
    ):
        test.test_session.inc_seq_num()
    test.test_session.send_packet()
    test.logger.info("BFD: Waiting for event")
    e = test.vapi.wait_for_event(1, "bfd_udp_session_event")
    verify_event(test, e, expected_state=BFDState.up)
    test.logger.info("BFD: Session is Up")
    test.test_session.update(state=BFDState.up)
    if (
        test.test_session.sha1_key
        and test.test_session.sha1_key.auth_type == BFDAuthType.meticulous_keyed_sha1
    ):
        test.test_session.inc_seq_num()
    test.test_session.send_packet()
    test.assert_equal(test.vpp_session.state, BFDState.up, BFDState)


def bfd_session_down(test):