#!/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 vpp_gre_interface import VppGreInterface, VppGre6Interface
+
+from framework import VppTestCase, VppTestRunner
+from util import ppp, fragment_rfc791, fragment_rfc8200
+from vpp_gre_interface import VppGreInterface
from vpp_ip import DpoProto
-from vpp_ip_route import VppIpRoute, VppRoutePath
+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)
-class TestIPv4Reassembly(VppTestCase):
+ 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):
""" IPv4 Reassembly """
@classmethod
cls.create_stream(cls.packet_sizes)
cls.create_fragments()
+ @classmethod
+ def tearDownClass(cls):
+ super(TestIPv4Reassembly, cls).tearDownClass()
+
def setUp(self):
""" Test setup - force timeout on existing reassemblies """
super(TestIPv4Reassembly, self).setUp()
self.vapi.ip_reassembly_enable_disable(
sw_if_index=self.src_if.sw_if_index, enable_ip4=True)
self.vapi.ip_reassembly_set(timeout_ms=0, max_reassemblies=1000,
+ max_reassembly_length=1000,
expire_walk_interval_ms=10)
self.sleep(.25)
self.vapi.ip_reassembly_set(timeout_ms=1000000, max_reassemblies=1000,
+ max_reassembly_length=1000,
expire_walk_interval_ms=10000)
def tearDown(self):
super(TestIPv4Reassembly, self).tearDown()
+
+ def show_commands_at_teardown(self):
self.logger.debug(self.vapi.ppcli("show ip4-reassembly details"))
self.logger.debug(self.vapi.ppcli("show buffers"))
cls.pkt_infos = []
for index, info in six.iteritems(infos):
p = info.data
- # cls.logger.debug(ppp("Packet:", p.__class__(str(p))))
+ # cls.logger.debug(ppp("Packet:",
+ # p.__class__(scapy.compat.raw(p))))
fragments_400 = fragment_rfc791(p, 400)
fragments_300 = fragment_rfc791(p, 300)
fragments_200 = [
(len(infos), len(cls.fragments_400),
len(cls.fragments_300), len(cls.fragments_200)))
- 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(str(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):
+ @parameterized.expand([(IP, None)])
+ def test_reassembly(self, family, stream):
""" basic reassembly """
+ stream = self.__class__.fragments_200
+ super(TestIPv4Reassembly, self).test_reassembly(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()
+ @parameterized.expand([(IP, None)])
+ def test_reversed(self, family, stream):
+ """ reverse order reassembly """
+ stream = self.__class__.fragments_200
+ super(TestIPv4Reassembly, self).test_reversed(family, stream)
- # run it all again to verify correctness
- self.pg_enable_capture()
- self.src_if.add_stream(self.fragments_200)
- self.pg_start()
+ @parameterized.expand([(IP, None)])
+ def test_random(self, family, stream):
+ stream = self.__class__.fragments_200
+ super(TestIPv4Reassembly, self).test_random(family, stream)
- 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 """
- def test_reversed(self):
- """ reverse order reassembly """
+ error_cnt_str = \
+ "/err/ip4-reassembly-feature/fragment chain too long (drop)"
- fragments = list(self.fragments_200)
- fragments.reverse()
+ error_cnt = self.statistics.get_err_counter(error_cnt_str)
- self.pg_enable_capture()
- self.src_if.add_stream(fragments)
- self.pg_start()
+ self.vapi.ip_reassembly_set(timeout_ms=100, max_reassemblies=1000,
+ max_reassembly_length=3,
+ expire_walk_interval_ms=50)
- packets = self.dst_if.get_capture(len(self.packet_infos))
- self.verify_capture(packets)
- self.src_if.assert_nothing_captured()
+ p1 = (Ether(dst=self.src_if.local_mac, src=self.src_if.remote_mac) /
+ IP(id=1000, src=self.src_if.remote_ip4,
+ dst=self.dst_if.remote_ip4) /
+ UDP(sport=1234, dport=5678) /
+ Raw("X" * 1000))
+ p2 = (Ether(dst=self.src_if.local_mac, src=self.src_if.remote_mac) /
+ IP(id=1001, src=self.src_if.remote_ip4,
+ dst=self.dst_if.remote_ip4) /
+ UDP(sport=1234, dport=5678) /
+ Raw("X" * 1000))
+ frags = fragment_rfc791(p1, 200) + fragment_rfc791(p2, 500)
- # run it all again to verify correctness
self.pg_enable_capture()
- self.src_if.add_stream(fragments)
+ self.src_if.add_stream(frags)
self.pg_start()
- packets = self.dst_if.get_capture(len(self.packet_infos))
- self.verify_capture(packets)
- self.src_if.assert_nothing_captured()
+ self.dst_if.get_capture(1)
+ self.assert_error_counter_equal(error_cnt_str, error_cnt + 1)
def test_5737(self):
""" fragment length + ip header size > 65535 """
# self.assert_packet_counter_equal(
# "/err/ip4-reassembly-feature/malformed packets", 1)
- 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):
+ @parameterized.expand([(IP, None)])
+ def test_duplicates(self, family, stream):
""" 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)))
]
-
- 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()
+ super(TestIPv4Reassembly, self).test_duplicates(family, fragments)
def test_overlap1(self):
""" overlapping fragments case #1 """
self.pg_start()
packets = self.dst_if.get_capture(len(self.pkt_infos))
- self.verify_capture(packets)
+ self.verify_capture(IP, packets)
self.src_if.assert_nothing_captured()
# run it all to verify correctness
self.pg_start()
packets = self.dst_if.get_capture(len(self.pkt_infos))
- self.verify_capture(packets)
+ self.verify_capture(IP, packets)
self.src_if.assert_nothing_captured()
def test_overlap2(self):
# new reassemblies will be started and packet generator will
# freak out when it detects unfreed buffers
zipped = zip(frags_300, frags_200)
- for i, j in zipped[:-1]:
+ for i, j in zipped:
fragments.extend(i)
fragments.extend(j)
- fragments.append(zipped[-1][0])
+ fragments.pop()
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.verify_capture(IP, packets)
self.src_if.assert_nothing_captured()
# run it all to verify correctness
self.pg_start()
packets = self.dst_if.get_capture(len(self.pkt_infos))
- self.verify_capture(packets)
+ self.verify_capture(IP, packets)
self.src_if.assert_nothing_captured()
- def test_timeout_inline(self):
+ @parameterized.expand([(IP, None, None)])
+ def test_timeout_inline(self, family, stream, dropped_packet_indexes):
""" 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,
- 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):
if len(frags_400) > 1)
self.vapi.ip_reassembly_set(timeout_ms=100, max_reassemblies=1000,
+ max_reassembly_length=1000,
expire_walk_interval_ms=50)
self.pg_enable_capture()
packets = self.dst_if.get_capture(
len(self.pkt_infos) - len(dropped_packet_indexes))
- self.verify_capture(packets, dropped_packet_indexes)
+ self.verify_capture(IP, packets, dropped_packet_indexes)
self.src_if.assert_nothing_captured()
- def test_disabled(self):
+ @parameterized.expand([(IP, None, None)])
+ def test_disabled(self, family, stream, dropped_packet_indexes):
""" 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,
- 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()
-
-class TestIPv6Reassembly(VppTestCase):
+class TestIPv6Reassembly(TestIPReassemblyMixin, VppTestCase):
""" IPv6 Reassembly """
@classmethod
cls.create_stream(cls.packet_sizes)
cls.create_fragments()
+ @classmethod
+ def tearDownClass(cls):
+ super(TestIPv6Reassembly, cls).tearDownClass()
+
def setUp(self):
""" Test setup - force timeout on existing reassemblies """
super(TestIPv6Reassembly, self).setUp()
self.vapi.ip_reassembly_enable_disable(
sw_if_index=self.src_if.sw_if_index, enable_ip6=True)
self.vapi.ip_reassembly_set(timeout_ms=0, max_reassemblies=1000,
+ max_reassembly_length=1000,
expire_walk_interval_ms=10, is_ip6=1)
self.sleep(.25)
self.vapi.ip_reassembly_set(timeout_ms=1000000, max_reassemblies=1000,
+ max_reassembly_length=1000,
expire_walk_interval_ms=10000, is_ip6=1)
self.logger.debug(self.vapi.ppcli("show ip6-reassembly details"))
self.logger.debug(self.vapi.ppcli("show buffers"))
def tearDown(self):
super(TestIPv6Reassembly, self).tearDown()
+
+ def show_commands_at_teardown(self):
self.logger.debug(self.vapi.ppcli("show ip6-reassembly details"))
self.logger.debug(self.vapi.ppcli("show buffers"))
cls.pkt_infos = []
for index, info in six.iteritems(infos):
p = info.data
- # cls.logger.debug(ppp("Packet:", p.__class__(str(p))))
+ # cls.logger.debug(ppp("Packet:",
+ # p.__class__(scapy.compat.raw(p))))
fragments_400 = fragment_rfc8200(p, info.index, 400)
fragments_300 = fragment_rfc8200(p, info.index, 300)
cls.pkt_infos.append((index, fragments_400, fragments_300))
(len(infos), len(cls.fragments_400),
len(cls.fragments_300)))
- 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(str(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):
+ @parameterized.expand([(IPv6, None)])
+ def test_reassembly(self, family, stream):
""" basic reassembly """
+ stream = self.__class__.fragments_400
+ super(TestIPv6Reassembly, self).test_reassembly(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):
+ @parameterized.expand([(IPv6, None)])
+ def test_reversed(self, family, stream):
""" reverse order reassembly """
+ stream = self.__class__.fragments_400
+ super(TestIPv6Reassembly, self).test_reversed(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):
+ @parameterized.expand([(IPv6, None)])
+ def test_random(self, family, stream):
""" random order reassembly """
+ stream = self.__class__.fragments_400
+ super(TestIPv6Reassembly, self).test_random(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):
+ @parameterized.expand([(IPv6, None)])
+ def test_duplicates(self, family, stream):
""" 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)
+
+ def test_long_fragment_chain(self):
+ """ long fragment chain """
+
+ error_cnt_str = \
+ "/err/ip6-reassembly-feature/fragment chain too long (drop)"
+
+ error_cnt = self.statistics.get_err_counter(error_cnt_str)
+
+ self.vapi.ip_reassembly_set(timeout_ms=100, max_reassemblies=1000,
+ max_reassembly_length=3,
+ expire_walk_interval_ms=50, is_ip6=1)
+
+ p = (Ether(dst=self.src_if.local_mac, src=self.src_if.remote_mac) /
+ IPv6(src=self.src_if.remote_ip6,
+ dst=self.dst_if.remote_ip6) /
+ UDP(sport=1234, dport=5678) /
+ Raw("X" * 1000))
+ frags = fragment_rfc8200(p, 1, 300) + fragment_rfc8200(p, 2, 500)
self.pg_enable_capture()
- self.src_if.add_stream(fragments)
+ self.src_if.add_stream(frags)
self.pg_start()
- packets = self.dst_if.get_capture(len(self.pkt_infos))
- self.verify_capture(packets)
- self.src_if.assert_nothing_captured()
+ self.dst_if.get_capture(1)
+ self.assert_error_counter_equal(error_cnt_str, error_cnt + 1)
def test_overlap1(self):
- """ overlapping fragments case #1 """
+ """ overlapping fragments case #1 (differs from IP test case)"""
fragments = []
for _, frags_400, frags_300 in self.pkt_infos:
packets = self.dst_if.get_capture(
len(self.pkt_infos) - len(dropped_packet_indexes))
- self.verify_capture(packets, dropped_packet_indexes)
+ self.verify_capture(IPv6, packets, dropped_packet_indexes)
self.src_if.assert_nothing_captured()
def test_overlap2(self):
- """ overlapping fragments case #2 """
+ """ overlapping fragments case #2 (differs from IP test case)"""
fragments = []
for _, frags_400, frags_300 in self.pkt_infos:
# new reassemblies will be started and packet generator will
# freak out when it detects unfreed buffers
zipped = zip(frags_400, frags_300)
- for i, j in zipped[:-1]:
+ for i, j in zipped:
fragments.extend(i)
fragments.extend(j)
- fragments.append(zipped[-1][0])
+ fragments.pop()
dropped_packet_indexes = set(
index for (index, _, frags) in self.pkt_infos if len(frags) > 1
packets = self.dst_if.get_capture(
len(self.pkt_infos) - len(dropped_packet_indexes))
- self.verify_capture(packets, dropped_packet_indexes)
+ self.verify_capture(IPv6, packets, dropped_packet_indexes)
self.src_if.assert_nothing_captured()
- def test_timeout_inline(self):
+ @parameterized.expand([(IPv6, None, None)])
+ def test_timeout_inline(self, family, stream, dropped_packets_index):
""" 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,
- 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:
if len(frags_400) > 1)
self.vapi.ip_reassembly_set(timeout_ms=100, max_reassemblies=1000,
+ max_reassembly_length=1000,
expire_walk_interval_ms=50)
self.vapi.ip_reassembly_set(timeout_ms=100, max_reassemblies=1000,
+ max_reassembly_length=1000,
expire_walk_interval_ms=50, is_ip6=1)
self.pg_enable_capture()
packets = self.dst_if.get_capture(
len(self.pkt_infos) - len(dropped_packet_indexes))
- self.verify_capture(packets, dropped_packet_indexes)
+ self.verify_capture(IPv6, packets, dropped_packet_indexes)
pkts = self.src_if.get_capture(
expected_count=len(dropped_packet_indexes))
for icmp in pkts:
self.assertIn(icmp[IPv6ExtHdrFragment].id, dropped_packet_indexes)
dropped_packet_indexes.remove(icmp[IPv6ExtHdrFragment].id)
- def test_disabled(self):
+ @parameterized.expand([(IPv6, None, None)])
+ def test_disabled(self, family, stream, dropped_packet_indexes):
""" 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)
-
- self.vapi.ip_reassembly_set(timeout_ms=1000, max_reassemblies=0,
- 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)
+ super(TestIPv6Reassembly, self).test_disabled(
+ family, stream, dropped_packet_indexes)
self.src_if.assert_nothing_captured()
def test_missing_upper(self):
Raw())
self.extend_packet(p, 1000, self.padding)
fragments = fragment_rfc8200(p, 1, 500)
- bad_fragment = p.__class__(str(fragments[1]))
+ bad_fragment = p.__class__(scapy.compat.raw(fragments[1]))
bad_fragment[IPv6ExtHdrFragment].nh = 59
bad_fragment[IPv6ExtHdrFragment].offset = 0
self.pg_enable_capture()
cls.create_stream()
cls.create_fragments()
+ @classmethod
+ def tearDownClass(cls):
+ super(TestIPv4ReassemblyLocalNode, cls).tearDownClass()
+
def setUp(self):
""" Test setup - force timeout on existing reassemblies """
super(TestIPv4ReassemblyLocalNode, self).setUp()
self.vapi.ip_reassembly_set(timeout_ms=0, max_reassemblies=1000,
+ max_reassembly_length=1000,
expire_walk_interval_ms=10)
self.sleep(.25)
self.vapi.ip_reassembly_set(timeout_ms=1000000, max_reassemblies=1000,
+ max_reassembly_length=1000,
expire_walk_interval_ms=10000)
def tearDown(self):
super(TestIPv4ReassemblyLocalNode, self).tearDown()
+
+ def show_commands_at_teardown(self):
self.logger.debug(self.vapi.ppcli("show ip4-reassembly details"))
self.logger.debug(self.vapi.ppcli("show buffers"))
cls.pkt_infos = []
for index, info in six.iteritems(infos):
p = info.data
- # cls.logger.debug(ppp("Packet:", p.__class__(str(p))))
+ # cls.logger.debug(ppp("Packet:",
+ # p.__class__(scapy.compat.raw(p))))
fragments_300 = fragment_rfc791(p, 300)
cls.pkt_infos.append((index, fragments_300))
cls.fragments_300 = [x for (_, frags) in cls.pkt_infos for x in frags]
self.logger.debug(ppp("Got packet:", packet))
ip = packet[IP]
icmp = packet[ICMP]
- payload_info = self.payload_to_info(str(packet[Raw]))
+ payload_info = self.payload_to_info(packet[Raw])
packet_index = payload_info.index
if packet_index in seen:
raise Exception(ppp("Duplicate packet received", packet))
cls.packet_sizes = [64, 512, 1518, 9018]
cls.padding = " abcdefghijklmn"
+ @classmethod
+ def tearDownClass(cls):
+ super(TestFIFReassembly, cls).tearDownClass()
+
def setUp(self):
""" Test setup - force timeout on existing reassemblies """
super(TestFIFReassembly, self).setUp()
sw_if_index=self.dst_if.sw_if_index, enable_ip4=True,
enable_ip6=True)
self.vapi.ip_reassembly_set(timeout_ms=0, max_reassemblies=1000,
+ max_reassembly_length=1000,
expire_walk_interval_ms=10)
self.vapi.ip_reassembly_set(timeout_ms=0, max_reassemblies=1000,
+ max_reassembly_length=1000,
expire_walk_interval_ms=10, is_ip6=1)
self.sleep(.25)
self.vapi.ip_reassembly_set(timeout_ms=1000000, max_reassemblies=1000,
+ max_reassembly_length=1000,
expire_walk_interval_ms=10000)
self.vapi.ip_reassembly_set(timeout_ms=1000000, max_reassemblies=1000,
+ max_reassembly_length=1000,
expire_walk_interval_ms=10000, is_ip6=1)
def tearDown(self):
+ super(TestFIFReassembly, self).tearDown()
+
+ def show_commands_at_teardown(self):
self.logger.debug(self.vapi.ppcli("show ip4-reassembly details"))
self.logger.debug(self.vapi.ppcli("show ip6-reassembly details"))
self.logger.debug(self.vapi.ppcli("show buffers"))
- super(TestFIFReassembly, self).tearDown()
def verify_capture(self, capture, ip_class, dropped_packet_indexes=[]):
"""Verify captured packet stream.
self.logger.debug(ppp("Got packet:", packet))
ip = packet[ip_class]
udp = packet[UDP]
- payload_info = self.payload_to_info(str(packet[Raw]))
+ payload_info = self.payload_to_info(packet[Raw])
packet_index = payload_info.index
self.assertTrue(
packet_index not in dropped_packet_indexes,
# it shared for multiple test cases
self.tun_ip6 = "1002::1"
- self.gre6 = VppGre6Interface(self, self.src_if.local_ip6, self.tun_ip6)
+ self.gre6 = VppGreInterface(self, self.src_if.local_ip6, self.tun_ip6)
self.gre6.add_vpp_config()
self.gre6.admin_up()
self.gre6.config_ip6()
sw_if_index=self.gre6.sw_if_index, enable_ip6=True)
self.route6 = VppIpRoute(self, self.tun_ip6, 128,
- [VppRoutePath(self.src_if.remote_ip6,
- self.src_if.sw_if_index,
- proto=DpoProto.DPO_PROTO_IP6)],
- is_ip6=1)
+ [VppRoutePath(
+ self.src_if.remote_ip6,
+ self.src_if.sw_if_index)])
self.route6.add_vpp_config()
self.reset_packet_infos()
Code Review / vpp.git / blobdiff