tests: initial asf framework refactoring for 'make test'

Type: refactor

Change-Id: I41455b759a5d302ad5c4247c13634c471e7d49a8
Signed-off-by: Pratikshya Prasai <pratikshyaprasai2112@gmail.com>
Signed-off-by: Saima Yunus <yunus.saima.234@gmail.com>
Signed-off-by: Dave Wallace <dwallacelf@gmail.com>

1 files changed, 0 insertions, 765 deletions

diff --git a/test/test_ipsec_spd_flow_cache_output.py b/test/test_ipsec_spd_flow_cache_output.py
deleted file mode 100644
index 8af3b6cfcda..00000000000
--- a/test/test_ipsec_spd_flow_cache_output.py
+++ /dev/null
@@ -1,765 +0,0 @@
-import socket
-import unittest
-
-from util import ppp
-from framework import VppTestRunner
-from template_ipsec import SpdFlowCacheTemplate
-
-
-class SpdFlowCacheOutbound(SpdFlowCacheTemplate):
-    # Override setUpConstants to enable outbound flow cache in config
-    @classmethod
-    def setUpConstants(cls):
-        super(SpdFlowCacheOutbound, cls).setUpConstants()
-        cls.vpp_cmdline.extend(["ipsec", "{", "ipv4-outbound-spd-flow-cache on", "}"])
-        cls.logger.info("VPP modified cmdline is %s" % " ".join(cls.vpp_cmdline))
-
-
-class IPSec4SpdTestCaseAdd(SpdFlowCacheOutbound):
-    """ IPSec/IPv4 outbound: Policy mode test case with flow cache \
-        (add rule)"""
-
-    def test_ipsec_spd_outbound_add(self):
-        # In this test case, packets in IPv4 FWD path are configured
-        # to go through IPSec outbound SPD policy lookup.
-        # 2 SPD rules (1 HIGH and 1 LOW) are added.
-        # High priority rule action is set to BYPASS.
-        # Low priority rule action is set to DISCARD.
-        # Traffic sent on pg0 interface should match high priority
-        # rule and should be sent out on pg1 interface.
-        self.create_interfaces(2)
-        pkt_count = 5
-        self.spd_create_and_intf_add(1, [self.pg1])
-        policy_0 = self.spd_add_rem_policy(  # outbound, priority 10
-            1,
-            self.pg0,
-            self.pg1,
-            socket.IPPROTO_UDP,
-            is_out=1,
-            priority=10,
-            policy_type="bypass",
-        )
-        policy_1 = self.spd_add_rem_policy(  # outbound, priority 5
-            1,
-            self.pg0,
-            self.pg1,
-            socket.IPPROTO_UDP,
-            is_out=1,
-            priority=5,
-            policy_type="discard",
-        )
-
-        # check flow cache is empty before sending traffic
-        self.verify_num_outbound_flow_cache_entries(0)
-
-        # create the packet stream
-        packets = self.create_stream(self.pg0, self.pg1, pkt_count)
-        # add the stream to the source interface + enable capture
-        self.pg0.add_stream(packets)
-        self.pg0.enable_capture()
-        self.pg1.enable_capture()
-        # start the packet generator
-        self.pg_start()
-        # get capture
-        capture = self.pg1.get_capture()
-        for packet in capture:
-            try:
-                self.logger.debug(ppp("SPD - Got packet:", packet))
-            except Exception:
-                self.logger.error(ppp("Unexpected or invalid packet:", packet))
-                raise
-        self.logger.debug("SPD: Num packets: %s", len(capture.res))
-
-        # assert nothing captured on pg0
-        self.pg0.assert_nothing_captured()
-        # verify captured packets
-        self.verify_capture(self.pg0, self.pg1, capture)
-        # verify all policies matched the expected number of times
-        self.verify_policy_match(pkt_count, policy_0)
-        self.verify_policy_match(0, policy_1)
-        # check policy in SPD has been cached after traffic
-        # matched BYPASS rule in SPD
-        self.verify_num_outbound_flow_cache_entries(1)
-
-
-class IPSec4SpdTestCaseRemoveOutbound(SpdFlowCacheOutbound):
-    """ IPSec/IPv4 outbound: Policy mode test case with flow cache \
-        (remove rule)"""
-
-    def test_ipsec_spd_outbound_remove(self):
-        # In this test case, packets in IPv4 FWD path are configured
-        # to go through IPSec outbound SPD policy lookup.
-        # 2 SPD rules (1 HIGH and 1 LOW) are added.
-        # High priority rule action is set to BYPASS.
-        # Low priority rule action is set to DISCARD.
-        # High priority rule is then removed.
-        # Traffic sent on pg0 interface should match low priority
-        # rule and should be discarded after SPD lookup.
-        self.create_interfaces(2)
-        pkt_count = 5
-        self.spd_create_and_intf_add(1, [self.pg1])
-        policy_0 = self.spd_add_rem_policy(  # outbound, priority 10
-            1,
-            self.pg0,
-            self.pg1,
-            socket.IPPROTO_UDP,
-            is_out=1,
-            priority=10,
-            policy_type="bypass",
-        )
-        policy_1 = self.spd_add_rem_policy(  # outbound, priority 5
-            1,
-            self.pg0,
-            self.pg1,
-            socket.IPPROTO_UDP,
-            is_out=1,
-            priority=5,
-            policy_type="discard",
-        )
-
-        # check flow cache is empty before sending traffic
-        self.verify_num_outbound_flow_cache_entries(0)
-
-        # create the packet stream
-        packets = self.create_stream(self.pg0, self.pg1, pkt_count)
-        # add the stream to the source interface + enable capture
-        self.pg0.add_stream(packets)
-        self.pg0.enable_capture()
-        self.pg1.enable_capture()
-        # start the packet generator
-        self.pg_start()
-        # get capture
-        capture = self.pg1.get_capture()
-        for packet in capture:
-            try:
-                self.logger.debug(ppp("SPD - Got packet:", packet))
-            except Exception:
-                self.logger.error(ppp("Unexpected or invalid packet:", packet))
-                raise
-
-        # assert nothing captured on pg0
-        self.pg0.assert_nothing_captured()
-        # verify capture on pg1
-        self.logger.debug("SPD: Num packets: %s", len(capture.res))
-        self.verify_capture(self.pg0, self.pg1, capture)
-        # verify all policies matched the expected number of times
-        self.verify_policy_match(pkt_count, policy_0)
-        self.verify_policy_match(0, policy_1)
-        # check policy in SPD has been cached after traffic
-        # matched BYPASS rule in SPD
-        self.verify_num_outbound_flow_cache_entries(1)
-
-        # now remove the bypass rule
-        self.spd_add_rem_policy(  # outbound, priority 10
-            1,
-            self.pg0,
-            self.pg1,
-            socket.IPPROTO_UDP,
-            is_out=1,
-            priority=10,
-            policy_type="bypass",
-            remove=True,
-        )
-        # verify flow cache counter has been reset by rule removal
-        self.verify_num_outbound_flow_cache_entries(0)
-
-        # resend the same packets
-        self.pg0.add_stream(packets)
-        self.pg0.enable_capture()  # flush the old captures
-        self.pg1.enable_capture()
-        self.pg_start()
-        # assert nothing captured on pg0
-        self.pg0.assert_nothing_captured()
-        # all packets will be dropped by SPD rule
-        self.pg1.assert_nothing_captured()
-        # verify all policies matched the expected number of times
-        self.verify_policy_match(pkt_count, policy_0)
-        self.verify_policy_match(pkt_count, policy_1)
-        # previous stale entry in flow cache should have been overwritten,
-        # with one active entry
-        self.verify_num_outbound_flow_cache_entries(1)
-
-
-class IPSec4SpdTestCaseReaddOutbound(SpdFlowCacheOutbound):
-    """ IPSec/IPv4 outbound: Policy mode test case with flow cache \
-        (add, remove, re-add)"""
-
-    def test_ipsec_spd_outbound_readd(self):
-        # In this test case, packets in IPv4 FWD path are configured
-        # to go through IPSec outbound SPD policy lookup.
-        # 2 SPD rules (1 HIGH and 1 LOW) are added.
-        # High priority rule action is set to BYPASS.
-        # Low priority rule action is set to DISCARD.
-        # Traffic sent on pg0 interface should match high priority
-        # rule and should be sent out on pg1 interface.
-        # High priority rule is then removed.
-        # Traffic sent on pg0 interface should match low priority
-        # rule and should be discarded after SPD lookup.
-        # Readd high priority rule.
-        # Traffic sent on pg0 interface should match high priority
-        # rule and should be sent out on pg1 interface.
-        self.create_interfaces(2)
-        pkt_count = 5
-        self.spd_create_and_intf_add(1, [self.pg1])
-        policy_0 = self.spd_add_rem_policy(  # outbound, priority 10
-            1,
-            self.pg0,
-            self.pg1,
-            socket.IPPROTO_UDP,
-            is_out=1,
-            priority=10,
-            policy_type="bypass",
-        )
-        policy_1 = self.spd_add_rem_policy(  # outbound, priority 5
-            1,
-            self.pg0,
-            self.pg1,
-            socket.IPPROTO_UDP,
-            is_out=1,
-            priority=5,
-            policy_type="discard",
-        )
-
-        # check flow cache is empty before sending traffic
-        self.verify_num_outbound_flow_cache_entries(0)
-
-        # create the packet stream
-        packets = self.create_stream(self.pg0, self.pg1, pkt_count)
-        # add the stream to the source interface + enable capture
-        self.pg0.add_stream(packets)
-        self.pg0.enable_capture()
-        self.pg1.enable_capture()
-        # start the packet generator
-        self.pg_start()
-        # get capture
-        capture = self.pg1.get_capture()
-        for packet in capture:
-            try:
-                self.logger.debug(ppp("SPD - Got packet:", packet))
-            except Exception:
-                self.logger.error(ppp("Unexpected or invalid packet:", packet))
-                raise
-        self.logger.debug("SPD: Num packets: %s", len(capture.res))
-
-        # assert nothing captured on pg0
-        self.pg0.assert_nothing_captured()
-        # verify capture on pg1
-        self.verify_capture(self.pg0, self.pg1, capture)
-        # verify all policies matched the expected number of times
-        self.verify_policy_match(pkt_count, policy_0)
-        self.verify_policy_match(0, policy_1)
-        # check policy in SPD has been cached after traffic
-        # matched BYPASS rule in SPD
-        self.verify_num_outbound_flow_cache_entries(1)
-
-        # now remove the bypass rule, leaving only the discard rule
-        self.spd_add_rem_policy(  # outbound, priority 10
-            1,
-            self.pg0,
-            self.pg1,
-            socket.IPPROTO_UDP,
-            is_out=1,
-            priority=10,
-            policy_type="bypass",
-            remove=True,
-        )
-        # verify flow cache counter has been reset by rule removal
-        self.verify_num_outbound_flow_cache_entries(0)
-
-        # resend the same packets
-        self.pg0.add_stream(packets)
-        self.pg0.enable_capture()  # flush the old captures
-        self.pg1.enable_capture()
-        self.pg_start()
-
-        # assert nothing captured on pg0
-        self.pg0.assert_nothing_captured()
-        # all packets will be dropped by SPD rule
-        self.pg1.assert_nothing_captured()
-        # verify all policies matched the expected number of times
-        self.verify_policy_match(pkt_count, policy_0)
-        self.verify_policy_match(pkt_count, policy_1)
-        # previous stale entry in flow cache should have been overwritten
-        self.verify_num_outbound_flow_cache_entries(1)
-
-        # now readd the bypass rule
-        policy_0 = self.spd_add_rem_policy(  # outbound, priority 10
-            1,
-            self.pg0,
-            self.pg1,
-            socket.IPPROTO_UDP,
-            is_out=1,
-            priority=10,
-            policy_type="bypass",
-        )
-        # verify flow cache counter has been reset by rule addition
-        self.verify_num_outbound_flow_cache_entries(0)
-
-        # resend the same packets
-        self.pg0.add_stream(packets)
-        self.pg0.enable_capture()  # flush the old captures
-        self.pg1.enable_capture()
-        self.pg_start()
-
-        # get capture
-        capture = self.pg1.get_capture(pkt_count)
-        for packet in capture:
-            try:
-                self.logger.debug(ppp("SPD - Got packet:", packet))
-            except Exception:
-                self.logger.error(ppp("Unexpected or invalid packet:", packet))
-                raise
-        self.logger.debug("SPD: Num packets: %s", len(capture.res))
-
-        # assert nothing captured on pg0
-        self.pg0.assert_nothing_captured()
-        # verify captured packets
-        self.verify_capture(self.pg0, self.pg1, capture)
-        # verify all policies matched the expected number of times
-        self.verify_policy_match(pkt_count, policy_0)
-        self.verify_policy_match(pkt_count, policy_1)
-        # previous stale entry in flow cache should have been overwritten
-        self.verify_num_outbound_flow_cache_entries(1)
-
-
-class IPSec4SpdTestCaseMultipleOutbound(SpdFlowCacheOutbound):
-    """ IPSec/IPv4 outbound: Policy mode test case with flow cache \
-        (multiple interfaces, multiple rules)"""
-
-    def test_ipsec_spd_outbound_multiple(self):
-        # In this test case, packets in IPv4 FWD path are configured to go
-        # through IPSec outbound SPD policy lookup.
-        # Multiples rules on multiple interfaces are tested at the same time.
-        # 3x interfaces are configured, binding the same SPD to each.
-        # Each interface has 2 SPD rules (1 BYPASS and 1 DISCARD).
-        # On pg0 & pg1, the BYPASS rule is HIGH priority
-        # On pg2, the DISCARD rule is HIGH priority
-        # Traffic should be received on pg0 & pg1 and dropped on pg2.
-        self.create_interfaces(3)
-        pkt_count = 5
-        # bind SPD to all interfaces
-        self.spd_create_and_intf_add(1, self.pg_interfaces)
-        # add rules on all interfaces
-        policy_01 = self.spd_add_rem_policy(  # outbound, priority 10
-            1,
-            self.pg0,
-            self.pg1,
-            socket.IPPROTO_UDP,
-            is_out=1,
-            priority=10,
-            policy_type="bypass",
-        )
-        policy_02 = self.spd_add_rem_policy(  # outbound, priority 5
-            1,
-            self.pg0,
-            self.pg1,
-            socket.IPPROTO_UDP,
-            is_out=1,
-            priority=5,
-            policy_type="discard",
-        )
-
-        policy_11 = self.spd_add_rem_policy(  # outbound, priority 10
-            1,
-            self.pg1,
-            self.pg2,
-            socket.IPPROTO_UDP,
-            is_out=1,
-            priority=10,
-            policy_type="bypass",
-        )
-        policy_12 = self.spd_add_rem_policy(  # outbound, priority 5
-            1,
-            self.pg1,
-            self.pg2,
-            socket.IPPROTO_UDP,
-            is_out=1,
-            priority=5,
-            policy_type="discard",
-        )
-
-        policy_21 = self.spd_add_rem_policy(  # outbound, priority 5
-            1,
-            self.pg2,
-            self.pg0,
-            socket.IPPROTO_UDP,
-            is_out=1,
-            priority=5,
-            policy_type="bypass",
-        )
-        policy_22 = self.spd_add_rem_policy(  # outbound, priority 10
-            1,
-            self.pg2,
-            self.pg0,
-            socket.IPPROTO_UDP,
-            is_out=1,
-            priority=10,
-            policy_type="discard",
-        )
-
-        # interfaces bound to an SPD, will by default drop inbound
-        # traffic with no matching policies. add catch-all inbound
-        # bypass rule to SPD:
-        self.spd_add_rem_policy(  # inbound, all interfaces
-            1,
-            None,
-            None,
-            socket.IPPROTO_UDP,
-            is_out=0,
-            priority=10,
-            policy_type="bypass",
-            all_ips=True,
-        )
-
-        # check flow cache is empty (0 active elements) before sending traffic
-        self.verify_num_outbound_flow_cache_entries(0)
-
-        # create the packet streams
-        packets0 = self.create_stream(self.pg0, self.pg1, pkt_count)
-        packets1 = self.create_stream(self.pg1, self.pg2, pkt_count)
-        packets2 = self.create_stream(self.pg2, self.pg0, pkt_count)
-        # add the streams to the source interfaces
-        self.pg0.add_stream(packets0)
-        self.pg1.add_stream(packets1)
-        self.pg2.add_stream(packets2)
-        # enable capture on all interfaces
-        for pg in self.pg_interfaces:
-            pg.enable_capture()
-        # start the packet generator
-        self.pg_start()
-
-        # get captures
-        if_caps = []
-        for pg in [self.pg1, self.pg2]:  # we are expecting captures on pg1/pg2
-            if_caps.append(pg.get_capture())
-            for packet in if_caps[-1]:
-                try:
-                    self.logger.debug(ppp("SPD - Got packet:", packet))
-                except Exception:
-                    self.logger.error(ppp("Unexpected or invalid packet:", packet))
-                    raise
-        self.logger.debug("SPD: Num packets: %s", len(if_caps[0].res))
-        self.logger.debug("SPD: Num packets: %s", len(if_caps[1].res))
-
-        # verify captures that matched BYPASS rule
-        self.verify_capture(self.pg0, self.pg1, if_caps[0])
-        self.verify_capture(self.pg1, self.pg2, if_caps[1])
-        # verify that traffic to pg0 matched DISCARD rule and was dropped
-        self.pg0.assert_nothing_captured()
-        # verify all packets that were expected to match rules, matched
-        # pg0 -> pg1
-        self.verify_policy_match(pkt_count, policy_01)
-        self.verify_policy_match(0, policy_02)
-        # pg1 -> pg2
-        self.verify_policy_match(pkt_count, policy_11)
-        self.verify_policy_match(0, policy_12)
-        # pg2 -> pg0
-        self.verify_policy_match(0, policy_21)
-        self.verify_policy_match(pkt_count, policy_22)
-        # check that 3 matching policies in SPD have been cached
-        self.verify_num_outbound_flow_cache_entries(3)
-
-
-class IPSec4SpdTestCaseOverwriteStaleOutbound(SpdFlowCacheOutbound):
-    """ IPSec/IPv4 outbound: Policy mode test case with flow cache \
-        (overwrite stale entries)"""
-
-    def test_ipsec_spd_outbound_overwrite(self):
-        # The operation of the flow cache is setup so that the entire cache
-        # is invalidated when adding or removing an SPD policy rule.
-        # For performance, old cache entries are not zero'd, but remain
-        # in the table as "stale" entries. If a flow matches a stale entry,
-        # and the epoch count does NOT match the current count, the entry
-        # is overwritten.
-        # In this test, 3 active rules are created and matched to enter
-        # them into the flow cache.
-        # A single entry is removed to invalidate the entire cache.
-        # We then readd the rule and test that overwriting of the previous
-        # stale entries occurs as expected, and that the flow cache entry
-        # counter is updated correctly.
-        self.create_interfaces(3)
-        pkt_count = 2
-        # bind SPD to all interfaces
-        self.spd_create_and_intf_add(1, self.pg_interfaces)
-        # add output rules on all interfaces
-        # pg0 -> pg1
-        policy_0 = self.spd_add_rem_policy(  # outbound
-            1,
-            self.pg0,
-            self.pg1,
-            socket.IPPROTO_UDP,
-            is_out=1,
-            priority=10,
-            policy_type="bypass",
-        )
-        # pg1 -> pg2
-        policy_1 = self.spd_add_rem_policy(  # outbound
-            1,
-            self.pg1,
-            self.pg2,
-            socket.IPPROTO_UDP,
-            is_out=1,
-            priority=10,
-            policy_type="bypass",
-        )
-        # pg2 -> pg0
-        policy_2 = self.spd_add_rem_policy(  # outbound
-            1,
-            self.pg2,
-            self.pg0,
-            socket.IPPROTO_UDP,
-            is_out=1,
-            priority=10,
-            policy_type="discard",
-        )
-
-        # interfaces bound to an SPD, will by default drop inbound
-        # traffic with no matching policies. add catch-all inbound
-        # bypass rule to SPD:
-        self.spd_add_rem_policy(  # inbound, all interfaces
-            1,
-            None,
-            None,
-            socket.IPPROTO_UDP,
-            is_out=0,
-            priority=10,
-            policy_type="bypass",
-            all_ips=True,
-        )
-
-        # check flow cache is empty (0 active elements) before sending traffic
-        self.verify_num_outbound_flow_cache_entries(0)
-
-        # create the packet streams
-        packets0 = self.create_stream(self.pg0, self.pg1, pkt_count)
-        packets1 = self.create_stream(self.pg1, self.pg2, pkt_count)
-        packets2 = self.create_stream(self.pg2, self.pg0, pkt_count)
-        # add the streams to the source interfaces
-        self.pg0.add_stream(packets0)
-        self.pg1.add_stream(packets1)
-        self.pg2.add_stream(packets2)
-        # enable capture on all interfaces
-        for pg in self.pg_interfaces:
-            pg.enable_capture()
-        # start the packet generator
-        self.pg_start()
-
-        # get captures from ifs
-        if_caps = []
-        for pg in [self.pg1, self.pg2]:  # we are expecting captures on pg1/pg2
-            if_caps.append(pg.get_capture())
-            for packet in if_caps[-1]:
-                try:
-                    self.logger.debug(ppp("SPD Add - Got packet:", packet))
-                except Exception:
-                    self.logger.error(ppp("Unexpected or invalid packet:", packet))
-                    raise
-
-        # verify captures that matched BYPASS rules
-        self.verify_capture(self.pg0, self.pg1, if_caps[0])
-        self.verify_capture(self.pg1, self.pg2, if_caps[1])
-        # verify that traffic to pg0 matched DISCARD rule and was dropped
-        self.pg0.assert_nothing_captured()
-        # verify all policies matched the expected number of times
-        self.verify_policy_match(pkt_count, policy_0)
-        self.verify_policy_match(pkt_count, policy_1)
-        self.verify_policy_match(pkt_count, policy_2)
-        # check flow/policy match was cached for: 3x output policies
-        self.verify_num_outbound_flow_cache_entries(3)
-
-        # adding an inbound policy should not invalidate output flow cache
-        self.spd_add_rem_policy(  # inbound
-            1,
-            self.pg0,
-            self.pg1,
-            socket.IPPROTO_UDP,
-            is_out=0,
-            priority=10,
-            policy_type="bypass",
-        )
-        # check flow cache counter has not been reset
-        self.verify_num_outbound_flow_cache_entries(3)
-
-        # remove a bypass policy - flow cache counter will be reset, and
-        # there will be 3x stale entries in flow cache
-        self.spd_add_rem_policy(  # outbound
-            1,
-            self.pg0,
-            self.pg1,
-            socket.IPPROTO_UDP,
-            is_out=1,
-            priority=10,
-            policy_type="bypass",
-            remove=True,
-        )
-        # readd policy
-        policy_0 = self.spd_add_rem_policy(  # outbound
-            1,
-            self.pg0,
-            self.pg1,
-            socket.IPPROTO_UDP,
-            is_out=1,
-            priority=10,
-            policy_type="bypass",
-        )
-        # check counter was reset with flow cache invalidation
-        self.verify_num_outbound_flow_cache_entries(0)
-
-        # resend the same packets
-        self.pg0.add_stream(packets0)
-        self.pg1.add_stream(packets1)
-        self.pg2.add_stream(packets2)
-        for pg in self.pg_interfaces:
-            pg.enable_capture()  # flush previous captures
-        self.pg_start()
-
-        # get captures from ifs
-        if_caps = []
-        for pg in [self.pg1, self.pg2]:  # we are expecting captures on pg1/pg2
-            if_caps.append(pg.get_capture())
-            for packet in if_caps[-1]:
-                try:
-                    self.logger.debug(ppp("SPD Add - Got packet:", packet))
-                except Exception:
-                    self.logger.error(ppp("Unexpected or invalid packet:", packet))
-                    raise
-
-        # verify captures that matched BYPASS rules
-        self.verify_capture(self.pg0, self.pg1, if_caps[0])
-        self.verify_capture(self.pg1, self.pg2, if_caps[1])
-        # verify that traffic to pg0 matched DISCARD rule and was dropped
-        self.pg0.assert_nothing_captured()
-        # verify all policies matched the expected number of times
-        self.verify_policy_match(pkt_count, policy_0)
-        self.verify_policy_match(pkt_count * 2, policy_1)
-        self.verify_policy_match(pkt_count * 2, policy_2)
-        # we are overwriting 3x stale entries - check flow cache counter
-        # is correct
-        self.verify_num_outbound_flow_cache_entries(3)
-
-
-class IPSec4SpdTestCaseCollisionOutbound(SpdFlowCacheOutbound):
-    """ IPSec/IPv4 outbound: Policy mode test case with flow cache \
-        (hash collision)"""
-
-    # Override class setup to restrict vector size to 16 elements.
-    # This forces using only the lower 4 bits of the hash as a key,
-    # making hash collisions easy to find.
-    @classmethod
-    def setUpConstants(cls):
-        super(SpdFlowCacheOutbound, cls).setUpConstants()
-        cls.vpp_cmdline.extend(
-            [
-                "ipsec",
-                "{",
-                "ipv4-outbound-spd-flow-cache on",
-                "ipv4-outbound-spd-hash-buckets 16",
-                "}",
-            ]
-        )
-        cls.logger.info("VPP modified cmdline is %s" % " ".join(cls.vpp_cmdline))
-
-    def test_ipsec_spd_outbound_collision(self):
-        # The flow cache operation is setup to overwrite an entry
-        # if a hash collision occurs.
-        # In this test, 2 packets are configured that result in a
-        # hash with the same lower 4 bits.
-        # After the first packet is received, there should be one
-        # active entry in the flow cache.
-        # After the second packet with the same lower 4 bit hash
-        # is received, this should overwrite the same entry.
-        # Therefore there will still be a total of one (1) entry,
-        # in the flow cache with two matching policies.
-        # crc32_supported() method is used to check cpu for crc32
-        # intrinsic support for hashing.
-        # If crc32 is not supported, we fall back to clib_xxhash()
-        self.create_interfaces(3)
-        pkt_count = 5
-        # bind SPD to all interfaces
-        self.spd_create_and_intf_add(1, self.pg_interfaces)
-        # add rules
-        policy_0 = self.spd_add_rem_policy(  # outbound, priority 10
-            1,
-            self.pg1,
-            self.pg2,
-            socket.IPPROTO_UDP,
-            is_out=1,
-            priority=10,
-            policy_type="bypass",
-        )
-        policy_1 = self.spd_add_rem_policy(  # outbound, priority 10
-            1,
-            self.pg2,
-            self.pg0,
-            socket.IPPROTO_UDP,
-            is_out=1,
-            priority=10,
-            policy_type="bypass",
-        )
-
-        # interfaces bound to an SPD, will by default drop inbound
-        # traffic with no matching policies. add catch-all inbound
-        # bypass rule to SPD:
-        self.spd_add_rem_policy(  # inbound, all interfaces
-            1,
-            None,
-            None,
-            socket.IPPROTO_UDP,
-            is_out=0,
-            priority=10,
-            policy_type="bypass",
-            all_ips=True,
-        )
-
-        # check flow cache is empty (0 active elements) before sending traffic
-        self.verify_num_outbound_flow_cache_entries(0)
-
-        # create the packet streams generating collision on last 4 bits
-        if self.crc32_supported():
-            # packet hashes to:
-            # 432c99c2
-            packets1 = self.create_stream(self.pg1, self.pg2, pkt_count, 1, 1)
-            # 31f8f3f2
-            packets2 = self.create_stream(self.pg2, self.pg0, pkt_count, 6, 6)
-        else:  # clib_xxhash
-            # ec3a258551bc0306
-            packets1 = self.create_stream(self.pg1, self.pg2, pkt_count, 2, 2)
-            # 61fee526d18d7a6
-            packets2 = self.create_stream(self.pg2, self.pg0, pkt_count, 3, 3)
-
-        # add the streams to the source interfaces
-        self.pg1.add_stream(packets1)
-        self.pg2.add_stream(packets2)
-        # enable capture on all interfaces
-        for pg in self.pg_interfaces:
-            pg.enable_capture()
-        # start the packet generator
-        self.pg_start()
-
-        # get captures from ifs - the proper pkt_count of packets was saved by
-        # create_packet_info() based on dst_if parameter
-        if_caps = []
-        for pg in [self.pg2, self.pg0]:  # we are expecting captures on pg2/pg0
-            if_caps.append(pg.get_capture())
-            for packet in if_caps[-1]:
-                try:
-                    self.logger.debug(ppp("SPD - Got packet:", packet))
-                except Exception:
-                    self.logger.error(ppp("Unexpected or invalid packet:", packet))
-                    raise
-        self.logger.debug("SPD: Num packets: %s", len(if_caps[0].res))
-        self.logger.debug("SPD: Num packets: %s", len(if_caps[1].res))
-
-        # verify captures that matched BYPASS rule
-        self.verify_capture(self.pg1, self.pg2, if_caps[0])
-        self.verify_capture(self.pg2, self.pg0, if_caps[1])
-        # verify all packets that were expected to match rules, matched
-        self.verify_policy_match(pkt_count, policy_0)
-        self.verify_policy_match(pkt_count, policy_1)
-        # we have matched 2 policies, but due to the hash collision
-        # one active entry is expected
-        self.verify_num_outbound_flow_cache_entries(1)
-
-
-if __name__ == "__main__":
-    unittest.main(testRunner=VppTestRunner)