test/test_abf.py - fdio/vpp - Gitiles

 #!/usr/bin/env python3

 import unittest

 from config import config
 from framework import VppTestCase
 from asfframework import VppTestRunner
 from vpp_ip_route import (
     VppIpRoute,
     VppRoutePath,
     VppIpTable,
 )
 from vpp_acl import AclRule, VppAcl

 from scapy.packet import Raw
 from scapy.layers.l2 import Ether
 from scapy.layers.inet import IP, UDP
 from scapy.layers.inet6 import IPv6
 from ipaddress import IPv4Network, IPv6Network

 from vpp_object import VppObject

 NUM_PKTS = 67


 def find_abf_policy(test, id):
     policies = test.vapi.abf_policy_dump()
     for p in policies:
         if id == p.policy.policy_id:
             return True
     return False


 def find_abf_itf_attach(test, id, sw_if_index):
     attachs = test.vapi.abf_itf_attach_dump()
     for a in attachs:
         if id == a.attach.policy_id and sw_if_index == a.attach.sw_if_index:
             return True
     return False


 class VppAbfPolicy(VppObject):
     def __init__(self, test, policy_id, acl, paths):
         self._test = test
         self.policy_id = policy_id
         self.acl = acl
         self.paths = paths
         self.encoded_paths = []
         for path in self.paths:
             self.encoded_paths.append(path.encode())

     def add_vpp_config(self):
         self._test.vapi.abf_policy_add_del(
             1,
             {
                 "policy_id": self.policy_id,
                 "acl_index": self.acl.acl_index,
                 "n_paths": len(self.paths),
                 "paths": self.encoded_paths,
             },
         )
         self._test.registry.register(self, self._test.logger)

     def remove_vpp_config(self):
         self._test.vapi.abf_policy_add_del(
             0,
             {
                 "policy_id": self.policy_id,
                 "acl_index": self.acl.acl_index,
                 "n_paths": len(self.paths),
                 "paths": self.encoded_paths,
             },
         )

     def query_vpp_config(self):
         return find_abf_policy(self._test, self.policy_id)

     def object_id(self):
         return "abf-policy-%d" % self.policy_id


 class VppAbfAttach(VppObject):
     def __init__(self, test, policy_id, sw_if_index, priority, is_ipv6=0):
         self._test = test
         self.policy_id = policy_id
         self.sw_if_index = sw_if_index
         self.priority = priority
         self.is_ipv6 = is_ipv6

     def add_vpp_config(self):
         self._test.vapi.abf_itf_attach_add_del(
             1,
             {
                 "policy_id": self.policy_id,
                 "sw_if_index": self.sw_if_index,
                 "priority": self.priority,
                 "is_ipv6": self.is_ipv6,
             },
         )
         self._test.registry.register(self, self._test.logger)

     def remove_vpp_config(self):
         self._test.vapi.abf_itf_attach_add_del(
             0,
             {
                 "policy_id": self.policy_id,
                 "sw_if_index": self.sw_if_index,
                 "priority": self.priority,
                 "is_ipv6": self.is_ipv6,
             },
         )

     def query_vpp_config(self):
         return find_abf_itf_attach(self._test, self.policy_id, self.sw_if_index)

     def object_id(self):
         return "abf-attach-%d-%d" % (self.policy_id, self.sw_if_index)


 @unittest.skipIf(
     "acl" in config.excluded_plugins,
     "Exclude ABF plugin tests due to absence of ACL plugin",
 )
 @unittest.skipIf("abf" in config.excluded_plugins, "Exclude ABF plugin tests")
 class TestAbf(VppTestCase):
     """ABF Test Case"""

     @classmethod
     def setUpClass(cls):
         super(TestAbf, cls).setUpClass()

     @classmethod
     def tearDownClass(cls):
         super(TestAbf, cls).tearDownClass()

     def setUp(self):
         super(TestAbf, self).setUp()

         self.create_pg_interfaces(range(5))

         for i in self.pg_interfaces[:4]:
             i.admin_up()
             i.config_ip4()
             i.resolve_arp()
             i.config_ip6()
             i.resolve_ndp()

     def tearDown(self):
         for i in self.pg_interfaces:
             i.unconfig_ip4()
             i.unconfig_ip6()
             i.admin_down()
         super(TestAbf, self).tearDown()

     def test_abf4(self):
         """IPv4 ACL Based Forwarding"""

         #
         # We are not testing the various matching capabilities
         # of ACLs, that's done elsewhere. Here ware are testing
         # the application of ACLs to a forwarding path to achieve
         # ABF
         # So we construct just a few ACLs to ensure the ABF policies
         # are correctly constructed and used. And a few path types
         # to test the API path decoding.
         #

         #
         # Rule 1
         #
         rule_1 = AclRule(
             is_permit=1,
             proto=17,
             ports=1234,
             src_prefix=IPv4Network("1.1.1.1/32"),
             dst_prefix=IPv4Network("1.1.1.2/32"),
         )
         acl_1 = VppAcl(self, rules=[rule_1])
         acl_1.add_vpp_config()

         #
         # ABF policy for ACL 1 - path via interface 1
         #
         abf_1 = VppAbfPolicy(
             self, 10, acl_1, [VppRoutePath(self.pg1.remote_ip4, self.pg1.sw_if_index)]
         )
         abf_1.add_vpp_config()

         #
         # Attach the policy to input interface Pg0
         #
         attach_1 = VppAbfAttach(self, 10, self.pg0.sw_if_index, 50)
         attach_1.add_vpp_config()

         #
         # fire in packet matching the ACL src,dst. If it's forwarded
         # then the ABF was successful, since default routing will drop it
         #
         p_1 = (
             Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
             / IP(src="1.1.1.1", dst="1.1.1.2")
             / UDP(sport=1234, dport=1234)
             / Raw(b"\xa5" * 100)
         )
         self.send_and_expect(self.pg0, p_1 * NUM_PKTS, self.pg1)

         #
         # Attach a 'better' priority policy to the same interface
         #
         abf_2 = VppAbfPolicy(
             self, 11, acl_1, [VppRoutePath(self.pg2.remote_ip4, self.pg2.sw_if_index)]
         )
         abf_2.add_vpp_config()
         attach_2 = VppAbfAttach(self, 11, self.pg0.sw_if_index, 40)
         attach_2.add_vpp_config()

         self.send_and_expect(self.pg0, p_1 * NUM_PKTS, self.pg2)

         #
         # Attach a policy with priority in the middle
         #
         abf_3 = VppAbfPolicy(
             self, 12, acl_1, [VppRoutePath(self.pg3.remote_ip4, self.pg3.sw_if_index)]
         )
         abf_3.add_vpp_config()
         attach_3 = VppAbfAttach(self, 12, self.pg0.sw_if_index, 45)
         attach_3.add_vpp_config()

         self.send_and_expect(self.pg0, p_1 * NUM_PKTS, self.pg2)

         #
         # remove the best priority
         #
         attach_2.remove_vpp_config()
         self.send_and_expect(self.pg0, p_1 * NUM_PKTS, self.pg3)

         #
         # Attach one of the same policies to Pg1
         #
         attach_4 = VppAbfAttach(self, 12, self.pg1.sw_if_index, 45)
         attach_4.add_vpp_config()

         p_2 = (
             Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac)
             / IP(src="1.1.1.1", dst="1.1.1.2")
             / UDP(sport=1234, dport=1234)
             / Raw(b"\xa5" * 100)
         )
         self.send_and_expect(self.pg1, p_2 * NUM_PKTS, self.pg3)

         #
         # detach the policy from PG1, now expect traffic to be dropped
         #
         attach_4.remove_vpp_config()

         self.send_and_assert_no_replies(self.pg1, p_2 * NUM_PKTS, "Detached")

         #
         # Swap to route via a next-hop in the non-default table
         #
         table_20 = VppIpTable(self, 20)
         table_20.add_vpp_config()

         self.pg4.set_table_ip4(table_20.table_id)
         self.pg4.admin_up()
         self.pg4.config_ip4()
         self.pg4.resolve_arp()

         abf_13 = VppAbfPolicy(
             self,
             13,
             acl_1,
             [
                 VppRoutePath(
                     self.pg4.remote_ip4, 0xFFFFFFFF, nh_table_id=table_20.table_id
                 )
             ],
         )
         abf_13.add_vpp_config()
         attach_5 = VppAbfAttach(self, 13, self.pg0.sw_if_index, 30)
         attach_5.add_vpp_config()

         self.send_and_expect(self.pg0, p_1 * NUM_PKTS, self.pg4)

         self.pg4.unconfig_ip4()
         self.pg4.set_table_ip4(0)

     def test_abf6(self):
         """IPv6 ACL Based Forwarding"""

         #
         # Simple test for matching IPv6 packets
         #

         #
         # Rule 1
         #
         rule_1 = AclRule(
             is_permit=1,
             proto=17,
             ports=1234,
             src_prefix=IPv6Network("2001::2/128"),
             dst_prefix=IPv6Network("2001::1/128"),
         )
         acl_1 = VppAcl(self, rules=[rule_1])
         acl_1.add_vpp_config()

         #
         # ABF policy for ACL 1 - path via interface 1
         #
         abf_1 = VppAbfPolicy(self, 10, acl_1, [VppRoutePath("3001::1", 0xFFFFFFFF)])
         abf_1.add_vpp_config()

         attach_1 = VppAbfAttach(self, 10, self.pg0.sw_if_index, 45, is_ipv6=True)
         attach_1.add_vpp_config()

         #
         # a packet matching the rule
         #
         p = (
             Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
             / IPv6(src="2001::2", dst="2001::1")
             / UDP(sport=1234, dport=1234)
             / Raw(b"\xa5" * 100)
         )

         #
         # packets are dropped because there is no route to the policy's
         # next hop
         #
         self.send_and_assert_no_replies(self.pg1, p * NUM_PKTS, "no route")

         #
         # add a route resolving the next-hop
         #
         route = VppIpRoute(
             self,
             "3001::1",
             32,
             [VppRoutePath(self.pg1.remote_ip6, self.pg1.sw_if_index)],
         )
         route.add_vpp_config()

         #
         # now expect packets forwarded.
         #
         self.send_and_expect(self.pg0, p * NUM_PKTS, self.pg1)

     def test_abf4_deny(self):
         """IPv4 ACL Deny Rule"""
         import ipaddress

         #
         # Rules 1/2
         #
         pg0_subnet = ipaddress.ip_network(self.pg0.local_ip4_prefix, strict=False)
         pg2_subnet = ipaddress.ip_network(self.pg2.local_ip4_prefix, strict=False)
         pg3_subnet = ipaddress.ip_network(self.pg3.local_ip4_prefix, strict=False)
         rule_deny = AclRule(
             is_permit=0,
             proto=17,
             ports=1234,
             src_prefix=IPv4Network(pg0_subnet),
             dst_prefix=IPv4Network(pg3_subnet),
         )
         rule_permit = AclRule(
             is_permit=1,
             proto=17,
             ports=1234,
             src_prefix=IPv4Network(pg0_subnet),
             dst_prefix=IPv4Network(pg2_subnet),
         )
         acl_1 = VppAcl(self, rules=[rule_deny, rule_permit])
         acl_1.add_vpp_config()

         #
         # ABF policy for ACL 1 - path via interface 1
         #
         abf_1 = VppAbfPolicy(
             self, 10, acl_1, [VppRoutePath(self.pg1.remote_ip4, self.pg1.sw_if_index)]
         )
         abf_1.add_vpp_config()

         #
         # Attach the policy to input interface Pg0
         #
         attach_1 = VppAbfAttach(self, 10, self.pg0.sw_if_index, 50)
         attach_1.add_vpp_config()

         #
         # a packet matching the deny rule
         #
         p_deny = (
             Ether(src=self.pg0.remote_mac, dst=self.pg3.remote_mac)
             / IP(src=self.pg0.remote_ip4, dst=self.pg3.remote_ip4)
             / UDP(sport=1234, dport=1234)
             / Raw(b"\xa5" * 100)
         )
         self.send_and_expect(self.pg0, p_deny * NUM_PKTS, self.pg3)

         #
         # a packet matching the permit rule
         #
         p_permit = (
             Ether(src=self.pg0.remote_mac, dst=self.pg2.remote_mac)
             / IP(src=self.pg0.remote_ip4, dst=self.pg2.remote_ip4)
             / UDP(sport=1234, dport=1234)
             / Raw(b"\xa5" * 100)
         )
         self.send_and_expect(self.pg0, p_permit * NUM_PKTS, self.pg1)

     def test_abf6_deny(self):
         """IPv6 ACL Deny Rule"""
         import ipaddress

         #
         # Rules 1/2
         #
         pg0_subnet = ipaddress.ip_network(self.pg0.local_ip6_prefix, strict=False)
         pg2_subnet = ipaddress.ip_network(self.pg2.local_ip6_prefix, strict=False)
         pg3_subnet = ipaddress.ip_network(self.pg3.local_ip6_prefix, strict=False)
         rule_deny = AclRule(
             is_permit=0,
             proto=17,
             ports=1234,
             src_prefix=IPv6Network(pg0_subnet),
             dst_prefix=IPv6Network(pg3_subnet),
         )
         rule_permit = AclRule(
             is_permit=1,
             proto=17,
             ports=1234,
             src_prefix=IPv6Network(pg0_subnet),
             dst_prefix=IPv6Network(pg2_subnet),
         )
         acl_1 = VppAcl(self, rules=[rule_deny, rule_permit])
         acl_1.add_vpp_config()

         #
         # ABF policy for ACL 1 - path via interface 1
         #
         abf_1 = VppAbfPolicy(
             self, 10, acl_1, [VppRoutePath(self.pg1.remote_ip6, self.pg1.sw_if_index)]
         )
         abf_1.add_vpp_config()

         #
         # Attach the policy to input interface Pg0
         #
         attach_1 = VppAbfAttach(self, 10, self.pg0.sw_if_index, 50, is_ipv6=1)
         attach_1.add_vpp_config()

         #
         # a packet matching the deny rule
         #
         p_deny = (
             Ether(src=self.pg0.remote_mac, dst=self.pg3.remote_mac)
             / IPv6(src=self.pg0.remote_ip6, dst=self.pg3.remote_ip6)
             / UDP(sport=1234, dport=1234)
             / Raw(b"\xa5" * 100)
         )
         self.send_and_expect(self.pg0, p_deny * NUM_PKTS, self.pg3)

         #
         # a packet matching the permit rule
         #
         p_permit = (
             Ether(src=self.pg0.remote_mac, dst=self.pg2.remote_mac)
             / IPv6(src=self.pg0.remote_ip6, dst=self.pg2.remote_ip6)
             / UDP(sport=1234, dport=1234)
             / Raw(b"\xa5" * 100)
         )
         self.send_and_expect(self.pg0, p_permit * NUM_PKTS, self.pg1)


 if __name__ == "__main__":
     unittest.main(testRunner=VppTestRunner)
	#!/usr/bin/env python3

	import unittest

	from config import config
	from framework import VppTestCase
	from asfframework import VppTestRunner
	from vpp_ip_route import (
	VppIpRoute,
	VppRoutePath,
	VppIpTable,
	)
	from vpp_acl import AclRule, VppAcl

	from scapy.packet import Raw
	from scapy.layers.l2 import Ether
	from scapy.layers.inet import IP, UDP
	from scapy.layers.inet6 import IPv6
	from ipaddress import IPv4Network, IPv6Network

	from vpp_object import VppObject

	NUM_PKTS = 67


	def find_abf_policy(test, id):
	policies = test.vapi.abf_policy_dump()
	for p in policies:
	if id == p.policy.policy_id:
	return True
	return False


	def find_abf_itf_attach(test, id, sw_if_index):
	attachs = test.vapi.abf_itf_attach_dump()
	for a in attachs:
	if id == a.attach.policy_id and sw_if_index == a.attach.sw_if_index:
	return True
	return False


	class VppAbfPolicy(VppObject):
	def __init__(self, test, policy_id, acl, paths):
	self._test = test
	self.policy_id = policy_id
	self.acl = acl
	self.paths = paths
	self.encoded_paths = []
	for path in self.paths:
	self.encoded_paths.append(path.encode())

	def add_vpp_config(self):
	self._test.vapi.abf_policy_add_del(
	1,
	{
	"policy_id": self.policy_id,
	"acl_index": self.acl.acl_index,
	"n_paths": len(self.paths),
	"paths": self.encoded_paths,
	},
	)
	self._test.registry.register(self, self._test.logger)

	def remove_vpp_config(self):
	self._test.vapi.abf_policy_add_del(
	0,
	{
	"policy_id": self.policy_id,
	"acl_index": self.acl.acl_index,
	"n_paths": len(self.paths),
	"paths": self.encoded_paths,
	},
	)

	def query_vpp_config(self):
	return find_abf_policy(self._test, self.policy_id)

	def object_id(self):
	return "abf-policy-%d" % self.policy_id


	class VppAbfAttach(VppObject):
	def __init__(self, test, policy_id, sw_if_index, priority, is_ipv6=0):
	self._test = test
	self.policy_id = policy_id
	self.sw_if_index = sw_if_index
	self.priority = priority
	self.is_ipv6 = is_ipv6

	def add_vpp_config(self):
	self._test.vapi.abf_itf_attach_add_del(
	1,
	{
	"policy_id": self.policy_id,
	"sw_if_index": self.sw_if_index,
	"priority": self.priority,
	"is_ipv6": self.is_ipv6,
	},
	)
	self._test.registry.register(self, self._test.logger)

	def remove_vpp_config(self):
	self._test.vapi.abf_itf_attach_add_del(
	0,
	{
	"policy_id": self.policy_id,
	"sw_if_index": self.sw_if_index,
	"priority": self.priority,
	"is_ipv6": self.is_ipv6,
	},
	)

	def query_vpp_config(self):
	return find_abf_itf_attach(self._test, self.policy_id, self.sw_if_index)

	def object_id(self):
	return "abf-attach-%d-%d" % (self.policy_id, self.sw_if_index)


	@unittest.skipIf(
	"acl" in config.excluded_plugins,
	"Exclude ABF plugin tests due to absence of ACL plugin",
	)
	@unittest.skipIf("abf" in config.excluded_plugins, "Exclude ABF plugin tests")
	class TestAbf(VppTestCase):
	"""ABF Test Case"""

	@classmethod
	def setUpClass(cls):
	super(TestAbf, cls).setUpClass()

	@classmethod
	def tearDownClass(cls):
	super(TestAbf, cls).tearDownClass()

	def setUp(self):
	super(TestAbf, self).setUp()

	self.create_pg_interfaces(range(5))

	for i in self.pg_interfaces[:4]:
	i.admin_up()
	i.config_ip4()
	i.resolve_arp()
	i.config_ip6()
	i.resolve_ndp()

	def tearDown(self):
	for i in self.pg_interfaces:
	i.unconfig_ip4()
	i.unconfig_ip6()
	i.admin_down()
	super(TestAbf, self).tearDown()

	def test_abf4(self):
	"""IPv4 ACL Based Forwarding"""

	#
	# We are not testing the various matching capabilities
	# of ACLs, that's done elsewhere. Here ware are testing
	# the application of ACLs to a forwarding path to achieve
	# ABF
	# So we construct just a few ACLs to ensure the ABF policies
	# are correctly constructed and used. And a few path types
	# to test the API path decoding.
	#

	#
	# Rule 1
	#
	rule_1 = AclRule(
	is_permit=1,
	proto=17,
	ports=1234,
	src_prefix=IPv4Network("1.1.1.1/32"),
	dst_prefix=IPv4Network("1.1.1.2/32"),
	)
	acl_1 = VppAcl(self, rules=[rule_1])
	acl_1.add_vpp_config()

	#
	# ABF policy for ACL 1 - path via interface 1
	#
	abf_1 = VppAbfPolicy(
	self, 10, acl_1, [VppRoutePath(self.pg1.remote_ip4, self.pg1.sw_if_index)]
	)
	abf_1.add_vpp_config()

	#
	# Attach the policy to input interface Pg0
	#
	attach_1 = VppAbfAttach(self, 10, self.pg0.sw_if_index, 50)
	attach_1.add_vpp_config()

	#
	# fire in packet matching the ACL src,dst. If it's forwarded
	# then the ABF was successful, since default routing will drop it
	#
	p_1 = (
	Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
	/ IP(src="1.1.1.1", dst="1.1.1.2")
	/ UDP(sport=1234, dport=1234)
	/ Raw(b"\xa5" * 100)
	)
	self.send_and_expect(self.pg0, p_1 * NUM_PKTS, self.pg1)

	#
	# Attach a 'better' priority policy to the same interface
	#
	abf_2 = VppAbfPolicy(
	self, 11, acl_1, [VppRoutePath(self.pg2.remote_ip4, self.pg2.sw_if_index)]
	)
	abf_2.add_vpp_config()
	attach_2 = VppAbfAttach(self, 11, self.pg0.sw_if_index, 40)
	attach_2.add_vpp_config()

	self.send_and_expect(self.pg0, p_1 * NUM_PKTS, self.pg2)

	#
	# Attach a policy with priority in the middle
	#
	abf_3 = VppAbfPolicy(
	self, 12, acl_1, [VppRoutePath(self.pg3.remote_ip4, self.pg3.sw_if_index)]
	)
	abf_3.add_vpp_config()
	attach_3 = VppAbfAttach(self, 12, self.pg0.sw_if_index, 45)
	attach_3.add_vpp_config()

	self.send_and_expect(self.pg0, p_1 * NUM_PKTS, self.pg2)

	#
	# remove the best priority
	#
	attach_2.remove_vpp_config()
	self.send_and_expect(self.pg0, p_1 * NUM_PKTS, self.pg3)

	#
	# Attach one of the same policies to Pg1
	#
	attach_4 = VppAbfAttach(self, 12, self.pg1.sw_if_index, 45)
	attach_4.add_vpp_config()

	p_2 = (
	Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac)
	/ IP(src="1.1.1.1", dst="1.1.1.2")
	/ UDP(sport=1234, dport=1234)
	/ Raw(b"\xa5" * 100)
	)
	self.send_and_expect(self.pg1, p_2 * NUM_PKTS, self.pg3)

	#
	# detach the policy from PG1, now expect traffic to be dropped
	#
	attach_4.remove_vpp_config()

	self.send_and_assert_no_replies(self.pg1, p_2 * NUM_PKTS, "Detached")

	#
	# Swap to route via a next-hop in the non-default table
	#
	table_20 = VppIpTable(self, 20)
	table_20.add_vpp_config()

	self.pg4.set_table_ip4(table_20.table_id)
	self.pg4.admin_up()
	self.pg4.config_ip4()
	self.pg4.resolve_arp()

	abf_13 = VppAbfPolicy(
	self,
	13,
	acl_1,
	[
	VppRoutePath(
	self.pg4.remote_ip4, 0xFFFFFFFF, nh_table_id=table_20.table_id
	)
	],
	)
	abf_13.add_vpp_config()
	attach_5 = VppAbfAttach(self, 13, self.pg0.sw_if_index, 30)
	attach_5.add_vpp_config()

	self.send_and_expect(self.pg0, p_1 * NUM_PKTS, self.pg4)

	self.pg4.unconfig_ip4()
	self.pg4.set_table_ip4(0)

	def test_abf6(self):
	"""IPv6 ACL Based Forwarding"""

	#
	# Simple test for matching IPv6 packets
	#

	#
	# Rule 1
	#
	rule_1 = AclRule(
	is_permit=1,
	proto=17,
	ports=1234,
	src_prefix=IPv6Network("2001::2/128"),
	dst_prefix=IPv6Network("2001::1/128"),
	)
	acl_1 = VppAcl(self, rules=[rule_1])
	acl_1.add_vpp_config()

	#
	# ABF policy for ACL 1 - path via interface 1
	#
	abf_1 = VppAbfPolicy(self, 10, acl_1, [VppRoutePath("3001::1", 0xFFFFFFFF)])
	abf_1.add_vpp_config()

	attach_1 = VppAbfAttach(self, 10, self.pg0.sw_if_index, 45, is_ipv6=True)
	attach_1.add_vpp_config()

	#
	# a packet matching the rule
	#
	p = (
	Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
	/ IPv6(src="2001::2", dst="2001::1")
	/ UDP(sport=1234, dport=1234)
	/ Raw(b"\xa5" * 100)
	)

	#
	# packets are dropped because there is no route to the policy's
	# next hop
	#
	self.send_and_assert_no_replies(self.pg1, p * NUM_PKTS, "no route")

	#
	# add a route resolving the next-hop
	#
	route = VppIpRoute(
	self,
	"3001::1",
	32,
	[VppRoutePath(self.pg1.remote_ip6, self.pg1.sw_if_index)],
	)
	route.add_vpp_config()

	#
	# now expect packets forwarded.
	#
	self.send_and_expect(self.pg0, p * NUM_PKTS, self.pg1)

	def test_abf4_deny(self):
	"""IPv4 ACL Deny Rule"""
	import ipaddress

	#
	# Rules 1/2
	#
	pg0_subnet = ipaddress.ip_network(self.pg0.local_ip4_prefix, strict=False)
	pg2_subnet = ipaddress.ip_network(self.pg2.local_ip4_prefix, strict=False)
	pg3_subnet = ipaddress.ip_network(self.pg3.local_ip4_prefix, strict=False)
	rule_deny = AclRule(
	is_permit=0,
	proto=17,
	ports=1234,
	src_prefix=IPv4Network(pg0_subnet),
	dst_prefix=IPv4Network(pg3_subnet),
	)
	rule_permit = AclRule(
	is_permit=1,
	proto=17,
	ports=1234,
	src_prefix=IPv4Network(pg0_subnet),
	dst_prefix=IPv4Network(pg2_subnet),
	)
	acl_1 = VppAcl(self, rules=[rule_deny, rule_permit])
	acl_1.add_vpp_config()

	#
	# ABF policy for ACL 1 - path via interface 1
	#
	abf_1 = VppAbfPolicy(
	self, 10, acl_1, [VppRoutePath(self.pg1.remote_ip4, self.pg1.sw_if_index)]
	)
	abf_1.add_vpp_config()

	#
	# Attach the policy to input interface Pg0
	#
	attach_1 = VppAbfAttach(self, 10, self.pg0.sw_if_index, 50)
	attach_1.add_vpp_config()

	#
	# a packet matching the deny rule
	#
	p_deny = (
	Ether(src=self.pg0.remote_mac, dst=self.pg3.remote_mac)
	/ IP(src=self.pg0.remote_ip4, dst=self.pg3.remote_ip4)
	/ UDP(sport=1234, dport=1234)
	/ Raw(b"\xa5" * 100)
	)
	self.send_and_expect(self.pg0, p_deny * NUM_PKTS, self.pg3)

	#
	# a packet matching the permit rule
	#
	p_permit = (
	Ether(src=self.pg0.remote_mac, dst=self.pg2.remote_mac)
	/ IP(src=self.pg0.remote_ip4, dst=self.pg2.remote_ip4)
	/ UDP(sport=1234, dport=1234)
	/ Raw(b"\xa5" * 100)
	)
	self.send_and_expect(self.pg0, p_permit * NUM_PKTS, self.pg1)

	def test_abf6_deny(self):
	"""IPv6 ACL Deny Rule"""
	import ipaddress

	#
	# Rules 1/2
	#
	pg0_subnet = ipaddress.ip_network(self.pg0.local_ip6_prefix, strict=False)
	pg2_subnet = ipaddress.ip_network(self.pg2.local_ip6_prefix, strict=False)
	pg3_subnet = ipaddress.ip_network(self.pg3.local_ip6_prefix, strict=False)
	rule_deny = AclRule(
	is_permit=0,
	proto=17,
	ports=1234,
	src_prefix=IPv6Network(pg0_subnet),
	dst_prefix=IPv6Network(pg3_subnet),
	)
	rule_permit = AclRule(
	is_permit=1,
	proto=17,
	ports=1234,
	src_prefix=IPv6Network(pg0_subnet),
	dst_prefix=IPv6Network(pg2_subnet),
	)
	acl_1 = VppAcl(self, rules=[rule_deny, rule_permit])
	acl_1.add_vpp_config()

	#
	# ABF policy for ACL 1 - path via interface 1
	#
	abf_1 = VppAbfPolicy(
	self, 10, acl_1, [VppRoutePath(self.pg1.remote_ip6, self.pg1.sw_if_index)]
	)
	abf_1.add_vpp_config()

	#
	# Attach the policy to input interface Pg0
	#
	attach_1 = VppAbfAttach(self, 10, self.pg0.sw_if_index, 50, is_ipv6=1)
	attach_1.add_vpp_config()

	#
	# a packet matching the deny rule
	#
	p_deny = (
	Ether(src=self.pg0.remote_mac, dst=self.pg3.remote_mac)
	/ IPv6(src=self.pg0.remote_ip6, dst=self.pg3.remote_ip6)
	/ UDP(sport=1234, dport=1234)
	/ Raw(b"\xa5" * 100)
	)
	self.send_and_expect(self.pg0, p_deny * NUM_PKTS, self.pg3)

	#
	# a packet matching the permit rule
	#
	p_permit = (
	Ether(src=self.pg0.remote_mac, dst=self.pg2.remote_mac)
	/ IPv6(src=self.pg0.remote_ip6, dst=self.pg2.remote_ip6)
	/ UDP(sport=1234, dport=1234)
	/ Raw(b"\xa5" * 100)
	)
	self.send_and_expect(self.pg0, p_permit * NUM_PKTS, self.pg1)


	if __name__ == "__main__":
	unittest.main(testRunner=VppTestRunner)