diff options
Diffstat (limited to 'test/test_bfd.py')
| -rw-r--r-- | test/test_bfd.py | 133 |
1 files changed, 123 insertions, 10 deletions
diff --git a/test/test_bfd.py b/test/test_bfd.py index 7a444cb3caf..174db3ed54a 100644 --- a/test/test_bfd.py +++ b/test/test_bfd.py @@ -4,6 +4,7 @@ from __future__ import division import binascii +from collections import namedtuple import hashlib import ipaddress import reprlib @@ -373,6 +374,10 @@ class BFDTestSession(object): self.state = BFDState.down self.auth_type = BFDAuthType.no_auth self.tunnel_header = tunnel_header + self.tx_packets = 0 + self.rx_packets = 0 + self.tx_packets_echo = 0 + self.rx_packets_echo = 0 def inc_seq_num(self): """ increment sequence number, wrapping if needed """ @@ -495,6 +500,7 @@ class BFDTestSession(object): interface = self.phy_interface self.test.logger.debug(ppp("Sending packet:", packet)) interface.add_stream(packet) + self.tx_packets += 1 self.test.pg_start() def verify_sha1_auth(self, packet): @@ -685,6 +691,7 @@ def wait_for_bfd_packet(test, timeout=1, pcap_time_min=None, is_tunnel=False): if time_left < 0: raise CaptureTimeoutError("Packet did not arrive within timeout") p = test.pg0.wait_for_packet(timeout=time_left) + test.test_session.rx_packets += 1 test.logger.debug(ppp("BFD: Got packet:", p)) if pcap_time_min is not None and p.time < pcap_time_min: test.logger.debug(ppp("BFD: ignoring packet (pcap time %s < " @@ -707,6 +714,33 @@ def wait_for_bfd_packet(test, timeout=1, pcap_time_min=None, is_tunnel=False): return p +BFDStats = namedtuple("BFDStats", "rx rx_echo tx tx_echo") + + +def bfd_grab_stats_snapshot(test, bs_idx=0, thread_index=None): + s = test.statistics + ti = thread_index + if ti is None: + rx = s['/bfd/rx-session-counters'][:, bs_idx].sum_packets() + rx_echo = s['/bfd/rx-session-echo-counters'][:, bs_idx].sum_packets() + tx = s['/bfd/tx-session-counters'][:, bs_idx].sum_packets() + tx_echo = s['/bfd/tx-session-echo-counters'][:, bs_idx].sum_packets() + else: + rx = s['/bfd/rx-session-counters'][ti, bs_idx].sum_packets() + rx_echo = s['/bfd/rx-session-echo-counters'][ti, bs_idx].sum_packets() + tx = s['/bfd/tx-session-counters'][ti, bs_idx].sum_packets() + tx_echo = s['/bfd/tx-session-echo-counters'][ti, bs_idx].sum_packets() + return BFDStats(rx, rx_echo, tx, tx_echo) + + +def bfd_stats_diff(stats_before, stats_after): + rx = stats_after.rx - stats_before.rx + rx_echo = stats_after.rx_echo - stats_before.rx_echo + tx = stats_after.tx - stats_before.tx + tx_echo = stats_after.tx_echo - stats_before.tx_echo + return BFDStats(rx, rx_echo, tx, tx_echo) + + @tag_run_solo class BFD4TestCase(VppTestCase): """Bidirectional Forwarding Detection (BFD)""" @@ -745,6 +779,8 @@ class BFD4TestCase(VppTestCase): self.vapi.want_bfd_events() self.pg0.enable_capture() try: + self.bfd_udp4_sessions = self.statistics['/bfd/udp4/sessions'] + self.bfd_udp6_sessions = self.statistics['/bfd/udp6/sessions'] self.vpp_session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip4) self.vpp_session.add_vpp_config() @@ -763,6 +799,10 @@ class BFD4TestCase(VppTestCase): def test_session_up(self): """ bring BFD session up """ bfd_session_up(self) + bfd_udp4_sessions = self.statistics['/bfd/udp4/sessions'] + bfd_udp6_sessions = self.statistics['/bfd/udp6/sessions'] + self.assert_equal(bfd_udp4_sessions - self.bfd_udp4_sessions, 1) + self.assert_equal(bfd_udp6_sessions, self.bfd_udp6_sessions) def test_session_up_by_ip(self): """ bring BFD session up - first frame looked up by address pair """ @@ -1121,8 +1161,8 @@ class BFD4TestCase(VppTestCase): def test_echo_looped_back(self): """ echo packets looped back """ - # don't need a session in this case.. - self.vpp_session.remove_vpp_config() + bfd_session_up(self) + stats_before = bfd_grab_stats_snapshot(self) self.pg0.enable_capture() echo_packet_count = 10 # random source port low enough to increment a few times.. @@ -1141,7 +1181,10 @@ class BFD4TestCase(VppTestCase): self.logger.debug(ppp("Sending packet:", echo_packet)) self.pg0.add_stream(echo_packet) self.pg_start() - for dummy in range(echo_packet_count): + self.logger.debug(self.vapi.ppcli("show trace")) + counter = 0 + bfd_control_packets_rx = 0 + while counter < echo_packet_count: p = self.pg0.wait_for_packet(1) self.logger.debug(ppp("Got packet:", p)) ether = p[Ether] @@ -1150,8 +1193,11 @@ class BFD4TestCase(VppTestCase): self.assert_equal(self.pg0.local_mac, ether.src, "Source MAC") ip = p[IP] self.assert_equal(self.pg0.remote_ip4, ip.dst, "Destination IP") - self.assert_equal(self.pg0.remote_ip4, ip.src, "Destination IP") udp = p[UDP] + if udp.dport == BFD.udp_dport: + bfd_control_packets_rx += 1 + continue + self.assert_equal(self.pg0.remote_ip4, ip.src, "Source IP") self.assert_equal(udp.dport, BFD.udp_dport_echo, "UDP destination port") self.assert_equal(udp.sport, udp_sport_rx, "UDP source port") @@ -1161,11 +1207,23 @@ class BFD4TestCase(VppTestCase): self.assertEqual(scapy.compat.raw(p[UDP].payload), scapy.compat.raw(echo_packet[UDP].payload), "Received packet is not the echo packet sent") + counter += 1 self.assert_equal(udp_sport_tx, udp_sport_rx, "UDP source port (== " "ECHO packet identifier for test purposes)") + stats_after = bfd_grab_stats_snapshot(self) + diff = bfd_stats_diff(stats_before, stats_after) + self.assertEqual( + 0, diff.rx, "RX counter bumped but no BFD packets sent") + self.assertEqual( + bfd_control_packets_rx, diff.tx, "TX counter incorrect") + self.assertEqual(0, diff.rx_echo, + "RX echo counter bumped but no BFD session exists") + self.assertEqual(0, diff.tx_echo, + "TX echo counter bumped but no BFD session exists") def test_echo(self): """ echo function """ + stats_before = bfd_grab_stats_snapshot(self) bfd_session_up(self) self.test_session.update(required_min_echo_rx=150000) self.test_session.send_packet() @@ -1201,9 +1259,12 @@ class BFD4TestCase(VppTestCase): "ECHO packet destination MAC address") p[Ether].dst = self.pg0.local_mac self.pg0.add_stream(p) + self.test_session.rx_packets_echo += 1 + self.test_session.tx_packets_echo += 1 self.pg_start() echo_seen = True elif p.haslayer(BFD): + self.test_session.rx_packets += 1 if echo_seen: self.assertGreaterEqual( p[BFD].required_min_rx_interval, @@ -1220,6 +1281,20 @@ class BFD4TestCase(VppTestCase): self.test_session.send_packet() self.assertTrue(echo_seen, "No echo packets received") + stats_after = bfd_grab_stats_snapshot(self) + diff = bfd_stats_diff(stats_before, stats_after) + # our rx is vpp tx and vice versa, also tolerate one packet off + self.assert_in_range(self.test_session.tx_packets, + diff.rx - 1, diff.rx + 1, "RX counter") + self.assert_in_range(self.test_session.rx_packets, + diff.tx - 1, diff.tx + 1, "TX counter") + self.assert_in_range(self.test_session.tx_packets_echo, + diff.rx_echo - 1, diff.rx_echo + 1, + "RX echo counter") + self.assert_in_range(self.test_session.rx_packets_echo, + diff.tx_echo - 1, diff.tx_echo + 1, + "TX echo counter") + def test_echo_fail(self): """ session goes down if echo function fails """ bfd_session_up(self) @@ -1555,6 +1630,8 @@ class BFD6TestCase(VppTestCase): self.vapi.want_bfd_events() self.pg0.enable_capture() try: + self.bfd_udp4_sessions = self.statistics['/bfd/udp4/sessions'] + self.bfd_udp6_sessions = self.statistics['/bfd/udp6/sessions'] self.vpp_session = VppBFDUDPSession(self, self.pg0, self.pg0.remote_ip6, af=AF_INET6) @@ -1575,6 +1652,10 @@ class BFD6TestCase(VppTestCase): def test_session_up(self): """ bring BFD session up """ bfd_session_up(self) + bfd_udp4_sessions = self.statistics['/bfd/udp4/sessions'] + bfd_udp6_sessions = self.statistics['/bfd/udp6/sessions'] + self.assert_equal(bfd_udp4_sessions, self.bfd_udp4_sessions) + self.assert_equal(bfd_udp6_sessions - self.bfd_udp6_sessions, 1) def test_session_up_by_ip(self): """ bring BFD session up - first frame looked up by address pair """ @@ -1614,8 +1695,8 @@ class BFD6TestCase(VppTestCase): def test_echo_looped_back(self): """ echo packets looped back """ - # don't need a session in this case.. - self.vpp_session.remove_vpp_config() + bfd_session_up(self) + stats_before = bfd_grab_stats_snapshot(self) self.pg0.enable_capture() echo_packet_count = 10 # random source port low enough to increment a few times.. @@ -1634,7 +1715,9 @@ class BFD6TestCase(VppTestCase): self.logger.debug(ppp("Sending packet:", echo_packet)) self.pg0.add_stream(echo_packet) self.pg_start() - for dummy in range(echo_packet_count): + counter = 0 + bfd_control_packets_rx = 0 + while counter < echo_packet_count: p = self.pg0.wait_for_packet(1) self.logger.debug(ppp("Got packet:", p)) ether = p[Ether] @@ -1643,8 +1726,11 @@ class BFD6TestCase(VppTestCase): self.assert_equal(self.pg0.local_mac, ether.src, "Source MAC") ip = p[IPv6] self.assert_equal(self.pg0.remote_ip6, ip.dst, "Destination IP") - self.assert_equal(self.pg0.remote_ip6, ip.src, "Destination IP") udp = p[UDP] + if udp.dport == BFD.udp_dport: + bfd_control_packets_rx += 1 + continue + self.assert_equal(self.pg0.remote_ip6, ip.src, "Source IP") self.assert_equal(udp.dport, BFD.udp_dport_echo, "UDP destination port") self.assert_equal(udp.sport, udp_sport_rx, "UDP source port") @@ -1654,13 +1740,23 @@ class BFD6TestCase(VppTestCase): self.assertEqual(scapy.compat.raw(p[UDP].payload), scapy.compat.raw(echo_packet[UDP].payload), "Received packet is not the echo packet sent") + counter += 1 self.assert_equal(udp_sport_tx, udp_sport_rx, "UDP source port (== " "ECHO packet identifier for test purposes)") - self.assert_equal(udp_sport_tx, udp_sport_rx, "UDP source port (== " - "ECHO packet identifier for test purposes)") + stats_after = bfd_grab_stats_snapshot(self) + diff = bfd_stats_diff(stats_before, stats_after) + self.assertEqual( + 0, diff.rx, "RX counter bumped but no BFD packets sent") + self.assertEqual(bfd_control_packets_rx, + diff.tx, "TX counter incorrect") + self.assertEqual(0, diff.rx_echo, + "RX echo counter bumped but no BFD session exists") + self.assertEqual(0, diff.tx_echo, + "TX echo counter bumped but no BFD session exists") def test_echo(self): """ echo function """ + stats_before = bfd_grab_stats_snapshot(self) bfd_session_up(self) self.test_session.update(required_min_echo_rx=150000) self.test_session.send_packet() @@ -1694,11 +1790,14 @@ class BFD6TestCase(VppTestCase): self.logger.debug(ppp("Looping back packet:", p)) self.assert_equal(p[Ether].dst, self.pg0.remote_mac, "ECHO packet destination MAC address") + self.test_session.rx_packets_echo += 1 + self.test_session.tx_packets_echo += 1 p[Ether].dst = self.pg0.local_mac self.pg0.add_stream(p) self.pg_start() echo_seen = True elif p.haslayer(BFD): + self.test_session.rx_packets += 1 if echo_seen: self.assertGreaterEqual( p[BFD].required_min_rx_interval, @@ -1715,6 +1814,20 @@ class BFD6TestCase(VppTestCase): self.test_session.send_packet() self.assertTrue(echo_seen, "No echo packets received") + stats_after = bfd_grab_stats_snapshot(self) + diff = bfd_stats_diff(stats_before, stats_after) + # our rx is vpp tx and vice versa, also tolerate one packet off + self.assert_in_range(self.test_session.tx_packets, + diff.rx - 1, diff.rx + 1, "RX counter") + self.assert_in_range(self.test_session.rx_packets, + diff.tx - 1, diff.tx + 1, "TX counter") + self.assert_in_range(self.test_session.tx_packets_echo, + diff.rx_echo - 1, diff.rx_echo + 1, + "RX echo counter") + self.assert_in_range(self.test_session.rx_packets_echo, + diff.tx_echo - 1, diff.tx_echo + 1, + "TX echo counter") + def test_intf_deleted(self): """ interface with bfd session deleted """ intf = VppLoInterface(self) |