More RFC compliance.
Ticket: VPP-1816 BFD: peer discriminator not reset on timeout
Type: fix
Change-Id: I68063c18097d282b3527e3fb485c1d0d1fd1b0c8
Signed-off-by: Klement Sekera <ksekera@cisco.com>
now + bm->wheel_inaccuracy)
{
BFD_DBG ("Rx timeout, session goes down");
now + bm->wheel_inaccuracy)
{
BFD_DBG ("Rx timeout, session goes down");
+ /*
+ * RFC 5880 6.8.1. State Variables
+
+ * bfd.RemoteDiscr
+
+ * The remote discriminator for this BFD session. This is the
+ * discriminator chosen by the remote system, and is totally opaque
+ * to the local system. This MUST be initialized to zero. If a
+ * period of a Detection Time passes without the receipt of a valid,
+ * authenticated BFD packet from the remote system, this variable
+ * MUST be set to zero.
+ */
+ bs->remote_discr = 0;
bfd_set_diag (bs, BFD_DIAG_CODE_det_time_exp);
bfd_set_state (bm, bs, BFD_STATE_down, handling_wakeup);
/*
bfd_set_diag (bs, BFD_DIAG_CODE_det_time_exp);
bfd_set_state (bm, bs, BFD_STATE_down, handling_wakeup);
/*
e = self.vapi.wait_for_event(1, "bfd_udp_session_details")
verify_event(self, e, expected_state=BFDState.down)
e = self.vapi.wait_for_event(1, "bfd_udp_session_details")
verify_event(self, e, expected_state=BFDState.down)
+ def test_peer_discr_reset_sess_down(self):
+ """ peer discriminator reset after session goes down """
+ bfd_session_up(self)
+ detection_time = self.test_session.detect_mult *\
+ self.vpp_session.required_min_rx / USEC_IN_SEC
+ self.sleep(detection_time, "waiting for BFD session time-out")
+ self.test_session.my_discriminator = 0
+ wait_for_bfd_packet(self,
+ pcap_time_min=time.time() - self.vpp_clock_offset)
+
def test_large_required_min_rx(self):
""" large remote required min rx interval """
bfd_session_up(self)
def test_large_required_min_rx(self):
""" large remote required min rx interval """
bfd_session_up(self)
self.test_session.vpp_seq_number = None
# now throw away any pending packets
self.pg0.enable_capture()
self.test_session.vpp_seq_number = None
# now throw away any pending packets
self.pg0.enable_capture()
+ self.test_session.my_discriminator = 0