diff options
Diffstat (limited to 'test/test_reassembly.py')
| -rw-r--r-- | test/test_reassembly.py | 520 |
1 files changed, 277 insertions, 243 deletions
diff --git a/test/test_reassembly.py b/test/test_reassembly.py index 6a356a00b0c..e95d533684e 100644 --- a/test/test_reassembly.py +++ b/test/test_reassembly.py @@ -1,18 +1,18 @@ #!/usr/bin/env python -from random import shuffle import six import unittest +from random import shuffle + +from framework import VppTestCase, VppTestRunner -from parameterized import parameterized import scapy.compat from scapy.packet import Raw from scapy.layers.l2 import Ether, GRE from scapy.layers.inet import IP, UDP, ICMP - +from util import ppp, fragment_rfc791, fragment_rfc8200 from scapy.layers.inet6 import IPv6, IPv6ExtHdrFragment, ICMPv6ParamProblem,\ ICMPv6TimeExceeded - from framework import VppTestCase, VppTestRunner from util import ppp, fragment_rfc791, fragment_rfc8200 from vpp_gre_interface import VppGreInterface @@ -22,183 +22,8 @@ from vpp_ip_route import VppIpRoute, VppRoutePath, FibPathProto # 35 is enough to have >257 400-byte fragments test_packet_count = 35 -# <class 'scapy.layers.inet.IP'> -# <class 'scapy.layers.inet6.IPv6'> -_scapy_ip_family_types = (IP, IPv6) - - -def validate_scapy_ip_family(scapy_ip_family): - - if scapy_ip_family not in _scapy_ip_family_types: - raise ValueError("'scapy_ip_family' must be of type: %s. Got %s" % - (_scapy_ip_family_types, scapy_ip_family)) - - -class TestIPReassemblyMixin(object): - - def verify_capture(self, scapy_ip_family, capture, - dropped_packet_indexes=None): - """Verify captured packet stream. - - :param list capture: Captured packet stream. - """ - validate_scapy_ip_family(scapy_ip_family) - - if dropped_packet_indexes is None: - dropped_packet_indexes = [] - info = None - seen = set() - for packet in capture: - try: - self.logger.debug(ppp("Got packet:", packet)) - ip = packet[scapy_ip_family] - udp = packet[UDP] - payload_info = self.payload_to_info(packet[Raw]) - packet_index = payload_info.index - self.assertTrue( - packet_index not in dropped_packet_indexes, - ppp("Packet received, but should be dropped:", packet)) - if packet_index in seen: - raise Exception(ppp("Duplicate packet received", packet)) - seen.add(packet_index) - self.assertEqual(payload_info.dst, self.src_if.sw_if_index) - info = self._packet_infos[packet_index] - self.assertTrue(info is not None) - self.assertEqual(packet_index, info.index) - saved_packet = info.data - self.assertEqual(ip.src, saved_packet[scapy_ip_family].src) - self.assertEqual(ip.dst, saved_packet[scapy_ip_family].dst) - self.assertEqual(udp.payload, saved_packet[UDP].payload) - except Exception: - self.logger.error(ppp("Unexpected or invalid packet:", packet)) - raise - for index in self._packet_infos: - self.assertTrue(index in seen or index in dropped_packet_indexes, - "Packet with packet_index %d not received" % index) - - def test_disabled(self, scapy_ip_family, stream, - dropped_packet_indexes): - """ reassembly disabled """ - validate_scapy_ip_family(scapy_ip_family) - is_ip6 = 1 if scapy_ip_family == IPv6 else 0 - - self.vapi.ip_reassembly_set(timeout_ms=1000, max_reassemblies=0, - max_reassembly_length=1000, - expire_walk_interval_ms=10000, - is_ip6=is_ip6) - - self.pg_enable_capture() - self.src_if.add_stream(stream) - self.pg_start() - - packets = self.dst_if.get_capture( - len(self.pkt_infos) - len(dropped_packet_indexes)) - self.verify_capture(scapy_ip_family, packets, dropped_packet_indexes) - self.src_if.assert_nothing_captured() - - def test_duplicates(self, scapy_ip_family, stream): - """ duplicate fragments """ - validate_scapy_ip_family(scapy_ip_family) - - self.pg_enable_capture() - self.src_if.add_stream(stream) - self.pg_start() - - packets = self.dst_if.get_capture(len(self.pkt_infos)) - self.verify_capture(scapy_ip_family, packets) - self.src_if.assert_nothing_captured() - - def test_random(self, scapy_ip_family, stream): - """ random order reassembly """ - validate_scapy_ip_family(scapy_ip_family) - - fragments = list(stream) - shuffle(fragments) - - self.pg_enable_capture() - self.src_if.add_stream(fragments) - self.pg_start() - - packets = self.dst_if.get_capture(len(self.packet_infos)) - self.verify_capture(scapy_ip_family, packets) - self.src_if.assert_nothing_captured() - - # run it all again to verify correctness - self.pg_enable_capture() - self.src_if.add_stream(fragments) - self.pg_start() - - packets = self.dst_if.get_capture(len(self.packet_infos)) - self.verify_capture(scapy_ip_family, packets) - self.src_if.assert_nothing_captured() - - def test_reassembly(self, scapy_ip_family, stream): - """ basic reassembly """ - validate_scapy_ip_family(scapy_ip_family) - - self.pg_enable_capture() - self.src_if.add_stream(stream) - self.pg_start() - - packets = self.dst_if.get_capture(len(self.pkt_infos)) - self.verify_capture(scapy_ip_family, packets) - self.src_if.assert_nothing_captured() - # run it all again to verify correctness - self.pg_enable_capture() - self.src_if.add_stream(stream) - self.pg_start() - - packets = self.dst_if.get_capture(len(self.pkt_infos)) - self.verify_capture(scapy_ip_family, packets) - self.src_if.assert_nothing_captured() - - def test_reversed(self, scapy_ip_family, stream): - """ reverse order reassembly """ - validate_scapy_ip_family(scapy_ip_family) - - fragments = list(stream) - fragments.reverse() - - self.pg_enable_capture() - self.src_if.add_stream(fragments) - self.pg_start() - - packets = self.dst_if.get_capture(len(self.packet_infos)) - self.verify_capture(scapy_ip_family, packets) - self.src_if.assert_nothing_captured() - - # run it all again to verify correctness - self.pg_enable_capture() - self.src_if.add_stream(fragments) - self.pg_start() - - packets = self.dst_if.get_capture(len(self.packet_infos)) - self.verify_capture(scapy_ip_family, packets) - self.src_if.assert_nothing_captured() - - def test_timeout_inline(self, scapy_ip_family, stream, - dropped_packet_indexes): - """ timeout (inline) """ - validate_scapy_ip_family(scapy_ip_family) - is_ip6 = 1 if scapy_ip_family == IPv6 else 0 - - self.vapi.ip_reassembly_set(timeout_ms=0, max_reassemblies=1000, - max_reassembly_length=1000, - expire_walk_interval_ms=10000, - is_ip6=is_ip6) - - self.pg_enable_capture() - self.src_if.add_stream(stream) - self.pg_start() - - packets = self.dst_if.get_capture( - len(self.pkt_infos) - len(dropped_packet_indexes)) - self.verify_capture(scapy_ip_family, packets, - dropped_packet_indexes) - - -class TestIPv4Reassembly(TestIPReassemblyMixin, VppTestCase): +class TestIPv4Reassembly(VppTestCase): """ IPv4 Reassembly """ @classmethod @@ -288,22 +113,83 @@ class TestIPv4Reassembly(TestIPReassemblyMixin, VppTestCase): (len(infos), len(cls.fragments_400), len(cls.fragments_300), len(cls.fragments_200))) - @parameterized.expand([(IP, None)]) - def test_reassembly(self, family, stream): + def verify_capture(self, capture, dropped_packet_indexes=[]): + """Verify captured packet stream. + + :param list capture: Captured packet stream. + """ + info = None + seen = set() + for packet in capture: + try: + self.logger.debug(ppp("Got packet:", packet)) + ip = packet[IP] + udp = packet[UDP] + payload_info = self.payload_to_info(packet[Raw]) + packet_index = payload_info.index + self.assertTrue( + packet_index not in dropped_packet_indexes, + ppp("Packet received, but should be dropped:", packet)) + if packet_index in seen: + raise Exception(ppp("Duplicate packet received", packet)) + seen.add(packet_index) + self.assertEqual(payload_info.dst, self.src_if.sw_if_index) + info = self._packet_infos[packet_index] + self.assertTrue(info is not None) + self.assertEqual(packet_index, info.index) + saved_packet = info.data + self.assertEqual(ip.src, saved_packet[IP].src) + self.assertEqual(ip.dst, saved_packet[IP].dst) + self.assertEqual(udp.payload, saved_packet[UDP].payload) + except Exception: + self.logger.error(ppp("Unexpected or invalid packet:", packet)) + raise + for index in self._packet_infos: + self.assertTrue(index in seen or index in dropped_packet_indexes, + "Packet with packet_index %d not received" % index) + + def test_reassembly(self): """ basic reassembly """ - stream = self.__class__.fragments_200 - super(TestIPv4Reassembly, self).test_reassembly(family, stream) - @parameterized.expand([(IP, None)]) - def test_reversed(self, family, stream): + self.pg_enable_capture() + self.src_if.add_stream(self.fragments_200) + self.pg_start() + + packets = self.dst_if.get_capture(len(self.pkt_infos)) + self.verify_capture(packets) + self.src_if.assert_nothing_captured() + + # run it all again to verify correctness + self.pg_enable_capture() + self.src_if.add_stream(self.fragments_200) + self.pg_start() + + packets = self.dst_if.get_capture(len(self.pkt_infos)) + self.verify_capture(packets) + self.src_if.assert_nothing_captured() + + def test_reversed(self): """ reverse order reassembly """ - stream = self.__class__.fragments_200 - super(TestIPv4Reassembly, self).test_reversed(family, stream) - @parameterized.expand([(IP, None)]) - def test_random(self, family, stream): - stream = self.__class__.fragments_200 - super(TestIPv4Reassembly, self).test_random(family, stream) + fragments = list(self.fragments_200) + fragments.reverse() + + self.pg_enable_capture() + self.src_if.add_stream(fragments) + self.pg_start() + + packets = self.dst_if.get_capture(len(self.packet_infos)) + self.verify_capture(packets) + self.src_if.assert_nothing_captured() + + # run it all again to verify correctness + self.pg_enable_capture() + self.src_if.add_stream(fragments) + self.pg_start() + + packets = self.dst_if.get_capture(len(self.packet_infos)) + self.verify_capture(packets) + self.src_if.assert_nothing_captured() def test_long_fragment_chain(self): """ long fragment chain """ @@ -432,16 +318,45 @@ class TestIPv4Reassembly(TestIPReassemblyMixin, VppTestCase): # self.assert_packet_counter_equal( # "/err/ip4-reassembly-feature/malformed packets", 1) - @parameterized.expand([(IP, None)]) - def test_duplicates(self, family, stream): + def test_random(self): + """ random order reassembly """ + + fragments = list(self.fragments_200) + shuffle(fragments) + + self.pg_enable_capture() + self.src_if.add_stream(fragments) + self.pg_start() + + packets = self.dst_if.get_capture(len(self.packet_infos)) + self.verify_capture(packets) + self.src_if.assert_nothing_captured() + + # run it all again to verify correctness + self.pg_enable_capture() + self.src_if.add_stream(fragments) + self.pg_start() + + packets = self.dst_if.get_capture(len(self.packet_infos)) + self.verify_capture(packets) + self.src_if.assert_nothing_captured() + + def test_duplicates(self): """ duplicate fragments """ + fragments = [ - # IPv4 uses 4 fields in pkt_infos, IPv6 uses 3. x for (_, frags, _, _) in self.pkt_infos for x in frags for _ in range(0, min(2, len(frags))) ] - super(TestIPv4Reassembly, self).test_duplicates(family, fragments) + + self.pg_enable_capture() + self.src_if.add_stream(fragments) + self.pg_start() + + packets = self.dst_if.get_capture(len(self.pkt_infos)) + self.verify_capture(packets) + self.src_if.assert_nothing_captured() def test_overlap1(self): """ overlapping fragments case #1 """ @@ -460,7 +375,7 @@ class TestIPv4Reassembly(TestIPReassemblyMixin, VppTestCase): self.pg_start() packets = self.dst_if.get_capture(len(self.pkt_infos)) - self.verify_capture(IP, packets) + self.verify_capture(packets) self.src_if.assert_nothing_captured() # run it all to verify correctness @@ -469,7 +384,7 @@ class TestIPv4Reassembly(TestIPReassemblyMixin, VppTestCase): self.pg_start() packets = self.dst_if.get_capture(len(self.pkt_infos)) - self.verify_capture(IP, packets) + self.verify_capture(packets) self.src_if.assert_nothing_captured() def test_overlap2(self): @@ -495,7 +410,7 @@ class TestIPv4Reassembly(TestIPReassemblyMixin, VppTestCase): self.pg_start() packets = self.dst_if.get_capture(len(self.pkt_infos)) - self.verify_capture(IP, packets) + self.verify_capture(packets) self.src_if.assert_nothing_captured() # run it all to verify correctness @@ -504,20 +419,27 @@ class TestIPv4Reassembly(TestIPReassemblyMixin, VppTestCase): self.pg_start() packets = self.dst_if.get_capture(len(self.pkt_infos)) - self.verify_capture(IP, packets) + self.verify_capture(packets) self.src_if.assert_nothing_captured() - @parameterized.expand([(IP, None, None)]) - def test_timeout_inline(self, family, stream, dropped_packet_indexes): + def test_timeout_inline(self): """ timeout (inline) """ - stream = self.fragments_400 dropped_packet_indexes = set( index for (index, frags, _, _) in self.pkt_infos if len(frags) > 1 ) - super(TestIPv4Reassembly, self).test_timeout_inline( - family, stream, dropped_packet_indexes) + self.vapi.ip_reassembly_set(timeout_ms=0, max_reassemblies=1000, + max_reassembly_length=3, + expire_walk_interval_ms=10000) + + self.pg_enable_capture() + self.src_if.add_stream(self.fragments_400) + self.pg_start() + + packets = self.dst_if.get_capture( + len(self.pkt_infos) - len(dropped_packet_indexes)) + self.verify_capture(packets, dropped_packet_indexes) self.src_if.assert_nothing_captured() def test_timeout_cleanup(self): @@ -553,22 +475,31 @@ class TestIPv4Reassembly(TestIPReassemblyMixin, VppTestCase): packets = self.dst_if.get_capture( len(self.pkt_infos) - len(dropped_packet_indexes)) - self.verify_capture(IP, packets, dropped_packet_indexes) + self.verify_capture(packets, dropped_packet_indexes) self.src_if.assert_nothing_captured() - @parameterized.expand([(IP, None, None)]) - def test_disabled(self, family, stream, dropped_packet_indexes): + def test_disabled(self): """ reassembly disabled """ - stream = self.__class__.fragments_400 dropped_packet_indexes = set( index for (index, frags_400, _, _) in self.pkt_infos if len(frags_400) > 1) - super(TestIPv4Reassembly, self).test_disabled( - family, stream, dropped_packet_indexes) + self.vapi.ip_reassembly_set(timeout_ms=1000, max_reassemblies=0, + max_reassembly_length=3, + expire_walk_interval_ms=10000) + + self.pg_enable_capture() + self.src_if.add_stream(self.fragments_400) + self.pg_start() -class TestIPv6Reassembly(TestIPReassemblyMixin, VppTestCase): + packets = self.dst_if.get_capture( + len(self.pkt_infos) - len(dropped_packet_indexes)) + self.verify_capture(packets, dropped_packet_indexes) + self.src_if.assert_nothing_captured() + + +class TestIPv6Reassembly(VppTestCase): """ IPv6 Reassembly """ @classmethod @@ -655,35 +586,123 @@ class TestIPv6Reassembly(TestIPReassemblyMixin, VppTestCase): (len(infos), len(cls.fragments_400), len(cls.fragments_300))) - @parameterized.expand([(IPv6, None)]) - def test_reassembly(self, family, stream): + def verify_capture(self, capture, dropped_packet_indexes=[]): + """Verify captured packet strea . + + :param list capture: Captured packet stream. + """ + info = None + seen = set() + for packet in capture: + try: + self.logger.debug(ppp("Got packet:", packet)) + ip = packet[IPv6] + udp = packet[UDP] + payload_info = self.payload_to_info(packet[Raw]) + packet_index = payload_info.index + self.assertTrue( + packet_index not in dropped_packet_indexes, + ppp("Packet received, but should be dropped:", packet)) + if packet_index in seen: + raise Exception(ppp("Duplicate packet received", packet)) + seen.add(packet_index) + self.assertEqual(payload_info.dst, self.src_if.sw_if_index) + info = self._packet_infos[packet_index] + self.assertTrue(info is not None) + self.assertEqual(packet_index, info.index) + saved_packet = info.data + self.assertEqual(ip.src, saved_packet[IPv6].src) + self.assertEqual(ip.dst, saved_packet[IPv6].dst) + self.assertEqual(udp.payload, saved_packet[UDP].payload) + except Exception: + self.logger.error(ppp("Unexpected or invalid packet:", packet)) + raise + for index in self._packet_infos: + self.assertTrue(index in seen or index in dropped_packet_indexes, + "Packet with packet_index %d not received" % index) + + def test_reassembly(self): """ basic reassembly """ - stream = self.__class__.fragments_400 - super(TestIPv6Reassembly, self).test_reassembly(family, stream) - @parameterized.expand([(IPv6, None)]) - def test_reversed(self, family, stream): + self.pg_enable_capture() + self.src_if.add_stream(self.fragments_400) + self.pg_start() + + packets = self.dst_if.get_capture(len(self.pkt_infos)) + self.verify_capture(packets) + self.src_if.assert_nothing_captured() + + # run it all again to verify correctness + self.pg_enable_capture() + self.src_if.add_stream(self.fragments_400) + self.pg_start() + + packets = self.dst_if.get_capture(len(self.pkt_infos)) + self.verify_capture(packets) + self.src_if.assert_nothing_captured() + + def test_reversed(self): """ reverse order reassembly """ - stream = self.__class__.fragments_400 - super(TestIPv6Reassembly, self).test_reversed(family, stream) - @parameterized.expand([(IPv6, None)]) - def test_random(self, family, stream): + fragments = list(self.fragments_400) + fragments.reverse() + + self.pg_enable_capture() + self.src_if.add_stream(fragments) + self.pg_start() + + packets = self.dst_if.get_capture(len(self.pkt_infos)) + self.verify_capture(packets) + self.src_if.assert_nothing_captured() + + # run it all again to verify correctness + self.pg_enable_capture() + self.src_if.add_stream(fragments) + self.pg_start() + + packets = self.dst_if.get_capture(len(self.pkt_infos)) + self.verify_capture(packets) + self.src_if.assert_nothing_captured() + + def test_random(self): """ random order reassembly """ - stream = self.__class__.fragments_400 - super(TestIPv6Reassembly, self).test_random(family, stream) - @parameterized.expand([(IPv6, None)]) - def test_duplicates(self, family, stream): + fragments = list(self.fragments_400) + shuffle(fragments) + + self.pg_enable_capture() + self.src_if.add_stream(fragments) + self.pg_start() + + packets = self.dst_if.get_capture(len(self.pkt_infos)) + self.verify_capture(packets) + self.src_if.assert_nothing_captured() + + # run it all again to verify correctness + self.pg_enable_capture() + self.src_if.add_stream(fragments) + self.pg_start() + + packets = self.dst_if.get_capture(len(self.pkt_infos)) + self.verify_capture(packets) + self.src_if.assert_nothing_captured() + + def test_duplicates(self): """ duplicate fragments """ fragments = [ - # IPv4 uses 4 fields in pkt_infos, IPv6 uses 3. x for (_, frags, _) in self.pkt_infos for x in frags for _ in range(0, min(2, len(frags))) ] - super(TestIPv6Reassembly, self).test_duplicates(family, fragments) + + self.pg_enable_capture() + self.src_if.add_stream(fragments) + self.pg_start() + + packets = self.dst_if.get_capture(len(self.pkt_infos)) + self.verify_capture(packets) + self.src_if.assert_nothing_captured() def test_long_fragment_chain(self): """ long fragment chain """ @@ -712,7 +731,7 @@ class TestIPv6Reassembly(TestIPReassemblyMixin, VppTestCase): self.assert_error_counter_equal(error_cnt_str, error_cnt + 1) def test_overlap1(self): - """ overlapping fragments case #1 (differs from IP test case)""" + """ overlapping fragments case #1 """ fragments = [] for _, frags_400, frags_300 in self.pkt_infos: @@ -733,11 +752,11 @@ class TestIPv6Reassembly(TestIPReassemblyMixin, VppTestCase): packets = self.dst_if.get_capture( len(self.pkt_infos) - len(dropped_packet_indexes)) - self.verify_capture(IPv6, packets, dropped_packet_indexes) + self.verify_capture(packets, dropped_packet_indexes) self.src_if.assert_nothing_captured() def test_overlap2(self): - """ overlapping fragments case #2 (differs from IP test case)""" + """ overlapping fragments case #2 """ fragments = [] for _, frags_400, frags_300 in self.pkt_infos: @@ -764,20 +783,27 @@ class TestIPv6Reassembly(TestIPReassemblyMixin, VppTestCase): packets = self.dst_if.get_capture( len(self.pkt_infos) - len(dropped_packet_indexes)) - self.verify_capture(IPv6, packets, dropped_packet_indexes) + self.verify_capture(packets, dropped_packet_indexes) self.src_if.assert_nothing_captured() - @parameterized.expand([(IPv6, None, None)]) - def test_timeout_inline(self, family, stream, dropped_packets_index): + def test_timeout_inline(self): """ timeout (inline) """ - stream = self.__class__.fragments_400 dropped_packet_indexes = set( index for (index, frags, _) in self.pkt_infos if len(frags) > 1 ) - super(TestIPv6Reassembly, self).test_timeout_inline( - family, stream, dropped_packet_indexes) + self.vapi.ip_reassembly_set(timeout_ms=0, max_reassemblies=1000, + max_reassembly_length=3, + expire_walk_interval_ms=10000, is_ip6=1) + + self.pg_enable_capture() + self.src_if.add_stream(self.fragments_400) + self.pg_start() + + packets = self.dst_if.get_capture( + len(self.pkt_infos) - len(dropped_packet_indexes)) + self.verify_capture(packets, dropped_packet_indexes) pkts = self.src_if.get_capture( expected_count=len(dropped_packet_indexes)) for icmp in pkts: @@ -823,7 +849,7 @@ class TestIPv6Reassembly(TestIPReassemblyMixin, VppTestCase): packets = self.dst_if.get_capture( len(self.pkt_infos) - len(dropped_packet_indexes)) - self.verify_capture(IPv6, packets, dropped_packet_indexes) + self.verify_capture(packets, dropped_packet_indexes) pkts = self.src_if.get_capture( expected_count=len(dropped_packet_indexes)) for icmp in pkts: @@ -832,16 +858,24 @@ class TestIPv6Reassembly(TestIPReassemblyMixin, VppTestCase): self.assertIn(icmp[IPv6ExtHdrFragment].id, dropped_packet_indexes) dropped_packet_indexes.remove(icmp[IPv6ExtHdrFragment].id) - @parameterized.expand([(IPv6, None, None)]) - def test_disabled(self, family, stream, dropped_packet_indexes): + def test_disabled(self): """ reassembly disabled """ - stream = self.__class__.fragments_400 dropped_packet_indexes = set( index for (index, frags_400, _) in self.pkt_infos if len(frags_400) > 1) - super(TestIPv6Reassembly, self).test_disabled( - family, stream, dropped_packet_indexes) + + self.vapi.ip_reassembly_set(timeout_ms=1000, max_reassemblies=0, + max_reassembly_length=3, + expire_walk_interval_ms=10000, is_ip6=1) + + self.pg_enable_capture() + self.src_if.add_stream(self.fragments_400) + self.pg_start() + + packets = self.dst_if.get_capture( + len(self.pkt_infos) - len(dropped_packet_indexes)) + self.verify_capture(packets, dropped_packet_indexes) self.src_if.assert_nothing_captured() def test_missing_upper(self): |