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vpp/test/test_map_br.py
Klement Sekera d9b0c6fbf7 tests: replace pycodestyle with black 
Drop pycodestyle for code style checking in favor of black. Black is
much faster, stable PEP8 compliant code style checker offering also
automatic formatting. It aims to be very stable and produce smallest
diffs. It's used by many small and big projects.

Running checkstyle with black takes a few seconds with a terse output.
Thus, test-checkstyle-diff is no longer necessary.

Expand scope of checkstyle to all python files in the repo, replacing
test-checkstyle with checkstyle-python.

Also, fixstyle-python is now available for automatic style formatting.

Note: python virtualenv has been consolidated in test/Makefile,
test/requirements*.txt which will eventually be moved to a central
location.  This is required to simply the automated generation of
docker executor images in the CI.

Type: improvement
Change-Id: I022a326603485f58585e879ac0f697fceefbc9c8
Signed-off-by: Klement Sekera <klement.sekera@gmail.com>
Signed-off-by: Dave Wallace <dwallacelf@gmail.com>
2022-05-10 18:52:08 +00:00

671 lines
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#!/usr/bin/env python3
import ipaddress
import unittest
from framework import VppTestCase, VppTestRunner
from vpp_ip import DpoProto
from vpp_ip_route import VppIpRoute, VppRoutePath
from util import fragment_rfc791, fragment_rfc8200
import scapy.compat
from scapy.layers.l2 import Ether
from scapy.packet import Raw
from scapy.layers.inet import IP, UDP, ICMP, TCP, IPerror, UDPerror
from scapy.layers.inet6 import IPv6, ICMPv6TimeExceeded, ICMPv6PacketTooBig
from scapy.layers.inet6 import ICMPv6EchoRequest, ICMPv6EchoReply, IPerror6
class TestMAPBR(VppTestCase):
"""MAP-T Test Cases"""
@classmethod
def setUpClass(cls):
super(TestMAPBR, cls).setUpClass()
@classmethod
def tearDownClass(cls):
super(TestMAPBR, cls).tearDownClass()
def setUp(self):
super(TestMAPBR, self).setUp()
#
# Create 2 pg interfaces.
# pg0 is IPv4
# pg1 is IPv6
#
self.create_pg_interfaces(range(2))
self.pg0.admin_up()
self.pg0.config_ip4()
self.pg1.generate_remote_hosts(20)
self.pg1.configure_ipv4_neighbors()
self.pg0.resolve_arp()
self.pg1.admin_up()
self.pg1.config_ip6()
self.pg1.generate_remote_hosts(20)
self.pg1.configure_ipv6_neighbors()
#
# BR configuration parameters used for all test.
#
self.ip4_prefix = "198.18.0.0/24"
self.ip6_prefix = "2001:db8:f0::/48"
self.ip6_src = "2001:db8:ffff:ff00::/64"
self.ea_bits_len = 12
self.psid_offset = 6
self.psid_length = 4
self.mtu = 1500
self.tag = "MAP-T BR"
self.ipv4_internet_address = self.pg0.remote_ip4
self.ipv4_map_address = "198.18.0.12"
self.ipv4_udp_or_tcp_internet_port = 65000
self.ipv4_udp_or_tcp_map_port = 16606
self.ipv6_cpe_address = "2001:db8:f0:c30:0:c612:c:3" # 198.18.0.12
self.ipv6_spoof_address = "2001:db8:f0:c30:0:c612:1c:3" # 198.18.0.28
self.ipv6_spoof_prefix = "2001:db8:f0:c30:0:a00:c:3" # 10.0.0.12
self.ipv6_spoof_psid = "2001:db8:f0:c30:0:c612:c:4" # 4
self.ipv6_spoof_subnet = "2001:db8:f1:c30:0:c612:c:3" # f1
self.ipv6_udp_or_tcp_internet_port = 65000
self.ipv6_udp_or_tcp_map_port = 16606
self.ipv6_udp_or_tcp_spoof_port = 16862
self.ipv6_map_address = "2001:db8:ffff:ff00:ac:1001:200:0" # 176.16.1.2
self.ipv6_map_same_rule_diff_addr = (
"2001:db8:ffff:ff00:c6:1200:1000:0" # 198.18.0.16
)
self.ipv6_map_same_rule_same_addr = (
"2001:db8:ffff:ff00:c6:1200:c00:0" # 198.18.0.12
)
self.map_br_prefix = "2001:db8:f0::"
self.map_br_prefix_len = 48
self.psid_number = 3
#
# Add an IPv6 route to the MAP-BR.
#
map_route = VppIpRoute(
self,
self.map_br_prefix,
self.map_br_prefix_len,
[VppRoutePath(self.pg1.remote_ip6, self.pg1.sw_if_index)],
)
map_route.add_vpp_config()
#
# Add a MAP BR domain that maps from pg0 to pg1.
#
self.vapi.map_add_domain(
ip4_prefix=self.ip4_prefix,
ip6_prefix=self.ip6_prefix,
ip6_src=self.ip6_src,
ea_bits_len=self.ea_bits_len,
psid_offset=self.psid_offset,
psid_length=self.psid_length,
mtu=self.mtu,
tag=self.tag,
)
#
# Set BR parameters.
#
self.vapi.map_param_set_fragmentation(inner=1, ignore_df=0)
self.vapi.map_param_set_fragmentation(inner=0, ignore_df=0)
self.vapi.map_param_set_icmp(ip4_err_relay_src=self.pg0.local_ip4)
self.vapi.map_param_set_traffic_class(copy=1)
#
# Enable MAP-T on interfaces.
#
self.vapi.map_if_enable_disable(
is_enable=1, sw_if_index=self.pg0.sw_if_index, is_translation=1
)
self.vapi.map_if_enable_disable(
is_enable=1, sw_if_index=self.pg1.sw_if_index, is_translation=1
)
self.vapi.map_if_enable_disable(
is_enable=1, sw_if_index=self.pg1.sw_if_index, is_translation=1
)
def tearDown(self):
super(TestMAPBR, self).tearDown()
for i in self.pg_interfaces:
i.unconfig_ip4()
i.unconfig_ip6()
i.admin_down()
def v4_address_check(self, pkt):
self.assertEqual(pkt[IP].src, self.ipv4_map_address)
self.assertEqual(pkt[IP].dst, self.ipv4_internet_address)
def v4_port_check(self, pkt, proto):
self.assertEqual(pkt[proto].sport, self.ipv4_udp_or_tcp_map_port)
self.assertEqual(pkt[proto].dport, self.ipv4_udp_or_tcp_internet_port)
def v6_address_check(self, pkt):
self.assertEqual(pkt[IPv6].src, self.ipv6_map_address)
self.assertEqual(pkt[IPv6].dst, self.ipv6_cpe_address)
def v6_port_check(self, pkt, proto):
self.assertEqual(pkt[proto].sport, self.ipv6_udp_or_tcp_internet_port)
self.assertEqual(pkt[proto].dport, self.ipv6_udp_or_tcp_map_port)
#
# Normal translation of UDP packets v4 -> v6 direction
# Send 128 frame size packet for IPv4/UDP.
# Received packet should be translated into IPv6 packet with no
# fragment header.
#
def test_map_t_udp_ip4_to_ip6(self):
"""MAP-T UDP IPv4 -> IPv6"""
eth = Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
ip = IP(src=self.pg0.remote_ip4, dst=self.ipv4_map_address, tos=0)
udp = UDP(
sport=self.ipv4_udp_or_tcp_internet_port,
dport=self.ipv4_udp_or_tcp_map_port,
)
payload = "a" * 82
tx_pkt = eth / ip / udp / payload
self.pg_send(self.pg0, tx_pkt * 1)
rx_pkts = self.pg1.get_capture(1)
rx_pkt = rx_pkts[0]
self.v6_address_check(rx_pkt)
self.v6_port_check(rx_pkt, UDP)
self.assertEqual(rx_pkt[IPv6].tc, 0) # IPv4 ToS passed to v6 TC
self.assertEqual(rx_pkt[IPv6].nh, IPv6(nh="UDP").nh)
#
# Normal translation of TCP packets v4 -> v6 direction.
# Send 128 frame size packet for IPv4/TCP.
# Received packet should be translated into IPv6 packet with no
# fragment header.
#
def test_map_t_tcp_ip4_to_ip6(self):
"""MAP-T TCP IPv4 -> IPv6"""
eth = Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
ip = IP(src=self.pg0.remote_ip4, dst=self.ipv4_map_address, tos=0)
tcp = TCP(
sport=self.ipv4_udp_or_tcp_internet_port,
dport=self.ipv4_udp_or_tcp_map_port,
)
payload = "a" * 82
tx_pkt = eth / ip / tcp / payload
self.pg_send(self.pg0, tx_pkt * 1)
rx_pkts = self.pg1.get_capture(1)
rx_pkt = rx_pkts[0]
self.v6_address_check(rx_pkt)
self.v6_port_check(rx_pkt, TCP)
self.assertEqual(rx_pkt[IPv6].tc, 0) # IPv4 ToS passed to v6 TC
self.assertEqual(rx_pkt[IPv6].nh, IPv6(nh="TCP").nh)
#
# Normal translation of UDP packets v6 -> v4 direction
# Send 128 frame size packet for IPv6/UDP.
# Received packet should be translated into an IPv4 packet with DF=1.
#
def test_map_t_udp_ip6_to_ip4(self):
"""MAP-T UDP IPv6 -> IPv4"""
eth = Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac)
ip = IPv6(src=self.ipv6_cpe_address, dst=self.ipv6_map_address)
udp = UDP(
sport=self.ipv6_udp_or_tcp_map_port,
dport=self.ipv6_udp_or_tcp_internet_port,
)
payload = "a" * 82
tx_pkt = eth / ip / udp / payload
self.pg_send(self.pg1, tx_pkt * 1)
rx_pkts = self.pg0.get_capture(1)
rx_pkt = rx_pkts[0]
self.v4_address_check(rx_pkt)
self.v4_port_check(rx_pkt, UDP)
self.assertEqual(rx_pkt[IP].proto, IP(proto="udp").proto)
self.assertEqual(rx_pkt[IP].tos, 0) # IPv6 TC passed to v4 ToS
df_bit = IP(flags="DF").flags
self.assertNotEqual(rx_pkt[IP].flags & df_bit, df_bit)
#
# Normal translation of TCP packets v6 -> v4 direction
# Send 128 frame size packet for IPv6/TCP.
# Received packet should be translated into an IPv4 packet with DF=1
#
def test_map_t_tcp_ip6_to_ip4(self):
"""MAP-T TCP IPv6 -> IPv4"""
eth = Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac)
ip = IPv6(src=self.ipv6_cpe_address, dst=self.ipv6_map_address)
tcp = TCP(
sport=self.ipv6_udp_or_tcp_map_port,
dport=self.ipv6_udp_or_tcp_internet_port,
)
payload = "a" * 82
tx_pkt = eth / ip / tcp / payload
self.pg_send(self.pg1, tx_pkt * 1)
rx_pkts = self.pg0.get_capture(1)
rx_pkt = rx_pkts[0]
self.v4_address_check(rx_pkt)
self.v4_port_check(rx_pkt, TCP)
self.assertEqual(rx_pkt[IP].proto, IP(proto="tcp").proto)
self.assertEqual(rx_pkt[IP].tos, 0) # IPv6 TC passed to v4 ToS
df_bit = IP(flags="DF").flags
self.assertNotEqual(rx_pkt[IP].flags & df_bit, df_bit)
#
# Translation of ICMP Echo Request v4 -> v6 direction
# Received packet should be translated into an IPv6 Echo Request.
#
def test_map_t_echo_request_ip4_to_ip6(self):
"""MAP-T echo request IPv4 -> IPv6"""
eth = Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac)
ip = IP(src=self.pg0.remote_ip4, dst=self.ipv4_map_address)
icmp = ICMP(type="echo-request", id=self.ipv6_udp_or_tcp_map_port)
payload = "H" * 10
tx_pkt = eth / ip / icmp / payload
self.pg_send(self.pg0, tx_pkt * 1)
rx_pkts = self.pg1.get_capture(1)
rx_pkt = rx_pkts[0]
self.assertEqual(rx_pkt[IPv6].nh, IPv6(nh="ICMPv6").nh)
self.assertEqual(
rx_pkt[ICMPv6EchoRequest].type, ICMPv6EchoRequest(type="Echo Request").type
)
self.assertEqual(rx_pkt[ICMPv6EchoRequest].code, 0)
self.assertEqual(rx_pkt[ICMPv6EchoRequest].id, self.ipv6_udp_or_tcp_map_port)
#
# Translation of ICMP Echo Reply v4 -> v6 direction
# Received packet should be translated into an IPv6 Echo Reply.
#
def test_map_t_echo_reply_ip4_to_ip6(self):
"""MAP-T echo reply IPv4 -> IPv6"""
eth = Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac)
ip = IP(src=self.pg0.remote_ip4, dst=self.ipv4_map_address)
icmp = ICMP(type="echo-reply", id=self.ipv6_udp_or_tcp_map_port)
payload = "H" * 10
tx_pkt = eth / ip / icmp / payload
self.pg_send(self.pg0, tx_pkt * 1)
rx_pkts = self.pg1.get_capture(1)
rx_pkt = rx_pkts[0]
self.assertEqual(rx_pkt[IPv6].nh, IPv6(nh="ICMPv6").nh)
self.assertEqual(
rx_pkt[ICMPv6EchoReply].type, ICMPv6EchoReply(type="Echo Reply").type
)
self.assertEqual(rx_pkt[ICMPv6EchoReply].code, 0)
self.assertEqual(rx_pkt[ICMPv6EchoReply].id, self.ipv6_udp_or_tcp_map_port)
#
# Translation of ICMP Time Exceeded v4 -> v6 direction
# Received packet should be translated into an IPv6 Time Exceeded.
#
def test_map_t_time_exceeded_ip4_to_ip6(self):
"""MAP-T time exceeded IPv4 -> IPv6"""
eth = Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac)
ip = IP(src=self.pg0.remote_ip4, dst=self.ipv4_map_address)
icmp = ICMP(type="time-exceeded", code="ttl-zero-during-transit")
ip_inner = IP(dst=self.pg0.remote_ip4, src=self.ipv4_map_address, ttl=1)
udp_inner = UDP(
sport=self.ipv4_udp_or_tcp_map_port,
dport=self.ipv4_udp_or_tcp_internet_port,
)
payload = "H" * 10
tx_pkt = eth / ip / icmp / ip_inner / udp_inner / payload
self.pg_send(self.pg0, tx_pkt * 1)
rx_pkts = self.pg1.get_capture(1)
rx_pkt = rx_pkts[0]
self.v6_address_check(rx_pkt)
self.assertEqual(rx_pkt[IPv6].nh, IPv6(nh="ICMPv6").nh)
self.assertEqual(rx_pkt[ICMPv6TimeExceeded].type, ICMPv6TimeExceeded().type)
self.assertEqual(
rx_pkt[ICMPv6TimeExceeded].code,
ICMPv6TimeExceeded(code="hop limit exceeded in transit").code,
)
self.assertEqual(rx_pkt[ICMPv6TimeExceeded].hlim, tx_pkt[IP][1].ttl)
self.assertTrue(rx_pkt.haslayer(IPerror6))
self.assertTrue(rx_pkt.haslayer(UDPerror))
self.assertEqual(rx_pkt[IPv6].src, rx_pkt[IPerror6].dst)
self.assertEqual(rx_pkt[IPv6].dst, rx_pkt[IPerror6].src)
self.assertEqual(rx_pkt[UDPerror].sport, self.ipv6_udp_or_tcp_map_port)
self.assertEqual(rx_pkt[UDPerror].dport, self.ipv6_udp_or_tcp_internet_port)
#
# Translation of ICMP Echo Request v6 -> v4 direction
# Received packet should be translated into an IPv4 Echo Request.
#
def test_map_t_echo_request_ip6_to_ip4(self):
"""MAP-T echo request IPv6 -> IPv4"""
eth = Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac)
ip = IPv6(src=self.ipv6_cpe_address, dst=self.ipv6_map_address)
icmp = ICMPv6EchoRequest()
icmp.id = self.ipv6_udp_or_tcp_map_port
payload = "H" * 10
tx_pkt = eth / ip / icmp / payload
self.pg_send(self.pg1, tx_pkt * 1)
rx_pkts = self.pg0.get_capture(1)
rx_pkt = rx_pkts[0]
self.assertEqual(rx_pkt[IP].proto, IP(proto="icmp").proto)
self.assertEqual(rx_pkt[ICMP].type, ICMP(type="echo-request").type)
self.assertEqual(rx_pkt[ICMP].code, 0)
self.assertEqual(rx_pkt[ICMP].id, self.ipv6_udp_or_tcp_map_port)
#
# Translation of ICMP Echo Reply v6 -> v4 direction
# Received packet should be translated into an IPv4 Echo Reply.
#
def test_map_t_echo_reply_ip6_to_ip4(self):
"""MAP-T echo reply IPv6 -> IPv4"""
eth = Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac)
ip = IPv6(src=self.ipv6_cpe_address, dst=self.ipv6_map_address)
icmp = ICMPv6EchoReply(id=self.ipv6_udp_or_tcp_map_port)
payload = "H" * 10
tx_pkt = eth / ip / icmp / payload
self.pg_send(self.pg1, tx_pkt * 1)
rx_pkts = self.pg0.get_capture(1)
rx_pkt = rx_pkts[0]
self.assertEqual(rx_pkt[IP].proto, IP(proto="icmp").proto)
self.assertEqual(rx_pkt[ICMP].type, ICMP(type="echo-reply").type)
self.assertEqual(rx_pkt[ICMP].code, 0)
self.assertEqual(rx_pkt[ICMP].id, self.ipv6_udp_or_tcp_map_port)
#
# Translation of ICMP Packet Too Big v6 -> v4 direction
# Received packet should be translated into an IPv4 Dest Unreachable.
#
def test_map_t_packet_too_big_ip6_to_ip4(self):
"""MAP-T packet too big IPv6 -> IPv4"""
eth = Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac)
ip = IPv6(src=self.ipv6_cpe_address, dst=self.ipv6_map_address)
icmp = ICMPv6PacketTooBig(mtu=1280)
ip_inner = IPv6(src=self.ipv6_map_address, dst=self.ipv6_cpe_address)
udp_inner = UDP(
sport=self.ipv6_udp_or_tcp_internet_port,
dport=self.ipv6_udp_or_tcp_map_port,
)
payload = "H" * 10
tx_pkt = eth / ip / icmp / ip_inner / udp_inner / payload
self.pg_send(self.pg1, tx_pkt * 1)
rx_pkts = self.pg0.get_capture(1)
rx_pkt = rx_pkts[0]
self.v4_address_check(rx_pkt)
self.assertEqual(rx_pkt[IP].proto, IP(proto="icmp").proto)
self.assertEqual(rx_pkt[ICMP].type, ICMP(type="dest-unreach").type)
self.assertEqual(rx_pkt[ICMP].code, ICMP(code="fragmentation-needed").code)
self.assertEqual(rx_pkt[ICMP].nexthopmtu, tx_pkt[ICMPv6PacketTooBig].mtu - 20)
self.assertTrue(rx_pkt.haslayer(IPerror))
self.assertTrue(rx_pkt.haslayer(UDPerror))
self.assertEqual(rx_pkt[IP].src, rx_pkt[IPerror].dst)
self.assertEqual(rx_pkt[IP].dst, rx_pkt[IPerror].src)
self.assertEqual(rx_pkt[UDPerror].sport, self.ipv4_udp_or_tcp_internet_port)
self.assertEqual(rx_pkt[UDPerror].dport, self.ipv4_udp_or_tcp_map_port)
#
# Translation of ICMP Time Exceeded v6 -> v4 direction
# Received packet should be translated into an IPv4 Time Exceeded.
#
def test_map_t_time_exceeded_ip6_to_ip4(self):
"""MAP-T time exceeded IPv6 -> IPv4"""
eth = Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac)
ip = IPv6(src=self.ipv6_cpe_address, dst=self.ipv6_map_address)
icmp = ICMPv6TimeExceeded()
ip_inner = IPv6(src=self.ipv6_map_address, dst=self.ipv6_cpe_address, hlim=1)
udp_inner = UDP(
sport=self.ipv6_udp_or_tcp_internet_port,
dport=self.ipv6_udp_or_tcp_map_port,
)
payload = "H" * 10
tx_pkt = eth / ip / icmp / ip_inner / udp_inner / payload
self.pg_send(self.pg1, tx_pkt * 1)
rx_pkts = self.pg0.get_capture(1)
rx_pkt = rx_pkts[0]
self.v4_address_check(rx_pkt)
self.assertEqual(rx_pkt[IP].proto, IP(proto="icmp").proto)
self.assertEqual(rx_pkt[ICMP].type, ICMP(type="time-exceeded").type)
self.assertEqual(rx_pkt[ICMP].code, ICMP(code="ttl-zero-during-transit").code)
self.assertEqual(rx_pkt[ICMP].ttl, tx_pkt[IPv6][1].hlim)
self.assertTrue(rx_pkt.haslayer(IPerror))
self.assertTrue(rx_pkt.haslayer(UDPerror))
self.assertEqual(rx_pkt[IP].src, rx_pkt[IPerror].dst)
self.assertEqual(rx_pkt[IP].dst, rx_pkt[IPerror].src)
self.assertEqual(rx_pkt[UDPerror].sport, self.ipv4_udp_or_tcp_internet_port)
self.assertEqual(rx_pkt[UDPerror].dport, self.ipv4_udp_or_tcp_map_port)
#
# Spoofed IPv4 Source Address v6 -> v4 direction
# Send a packet with a wrong IPv4 address embedded in bits 72-103.
# The BR should either drop the packet, or rewrite the spoofed
# source IPv4 as the actual source IPv4 address.
# The BR really should drop the packet.
#
def test_map_t_spoof_ipv4_src_addr_ip6_to_ip4(self):
"""MAP-T spoof ipv4 src addr IPv6 -> IPv4"""
eth = Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac)
ip = IPv6(src=self.ipv6_spoof_address, dst=self.ipv6_map_address)
udp = UDP(
sport=self.ipv6_udp_or_tcp_map_port,
dport=self.ipv6_udp_or_tcp_internet_port,
)
payload = "a" * 82
tx_pkt = eth / ip / udp / payload
self.pg_send(self.pg1, tx_pkt * 1)
self.pg0.get_capture(0, timeout=1)
self.pg0.assert_nothing_captured(remark="Should drop IPv4 spoof address")
#
# Spoofed IPv4 Source Prefix v6 -> v4 direction
# Send a packet with a wrong IPv4 prefix embedded in bits 72-103.
# The BR should either drop the packet, or rewrite the source IPv4
# to the prefix that matches the source IPv4 address.
#
def test_map_t_spoof_ipv4_src_prefix_ip6_to_ip4(self):
"""MAP-T spoof ipv4 src prefix IPv6 -> IPv4"""
eth = Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac)
ip = IPv6(src=self.ipv6_spoof_prefix, dst=self.ipv6_map_address)
udp = UDP(
sport=self.ipv6_udp_or_tcp_map_port,
dport=self.ipv6_udp_or_tcp_internet_port,
)
payload = "a" * 82
tx_pkt = eth / ip / udp / payload
self.pg_send(self.pg1, tx_pkt * 1)
self.pg0.get_capture(0, timeout=1)
self.pg0.assert_nothing_captured(remark="Should drop IPv4 spoof prefix")
#
# Spoofed IPv6 PSID v6 -> v4 direction
# Send a packet with a wrong IPv6 port PSID
# The BR should drop the packet.
#
def test_map_t_spoof_psid_ip6_to_ip4(self):
"""MAP-T spoof psid IPv6 -> IPv4"""
eth = Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac)
ip = IPv6(src=self.ipv6_spoof_psid, dst=self.ipv6_map_address)
udp = UDP(
sport=self.ipv6_udp_or_tcp_map_port,
dport=self.ipv6_udp_or_tcp_internet_port,
)
payload = "a" * 82
tx_pkt = eth / ip / udp / payload
self.pg_send(self.pg1, tx_pkt * 1)
self.pg0.get_capture(0, timeout=1)
self.pg0.assert_nothing_captured(remark="Should drop IPv6 spoof PSID")
#
# Spoofed IPv6 subnet field v6 -> v4 direction
# Send a packet with a wrong IPv6 subnet as "2001:db8:f1"
# The BR should drop the packet.
#
def test_map_t_spoof_subnet_ip6_to_ip4(self):
"""MAP-T spoof subnet IPv6 -> IPv4"""
eth = Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac)
ip = IPv6(src=self.ipv6_spoof_subnet, dst=self.ipv6_map_address)
udp = UDP(
sport=self.ipv6_udp_or_tcp_map_port,
dport=self.ipv6_udp_or_tcp_internet_port,
)
payload = "a" * 82
tx_pkt = eth / ip / udp / payload
self.pg_send(self.pg1, tx_pkt * 1)
self.pg0.get_capture(0, timeout=1)
self.pg0.assert_nothing_captured(remark="Should drop IPv6 spoof subnet")
#
# Spoofed IPv6 port PSID v6 -> v4 direction
# Send a packet with a wrong IPv6 port PSID
# The BR should drop the packet.
#
def test_map_t_spoof_port_psid_ip6_to_ip4(self):
"""MAP-T spoof port psid IPv6 -> IPv4"""
eth = Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac)
ip = IPv6(src=self.ipv6_cpe_address, dst=self.ipv6_map_address)
udp = UDP(
sport=self.ipv6_udp_or_tcp_spoof_port,
dport=self.ipv6_udp_or_tcp_internet_port,
)
payload = "a" * 82
tx_pkt = eth / ip / udp / payload
self.pg_send(self.pg1, tx_pkt * 1)
self.pg0.get_capture(0, timeout=1)
self.pg0.assert_nothing_captured(remark="Should drop IPv6 spoof port PSID")
#
# Spoofed IPv6 ICMP ID PSID v6 -> v4 direction
# Send a packet with a wrong IPv6 IMCP ID PSID
# The BR should drop the packet.
#
def test_map_t_spoof_icmp_id_psid_ip6_to_ip4(self):
"""MAP-T spoof ICMP id psid IPv6 -> IPv4"""
eth = Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac)
ip = IPv6(src=self.ipv6_cpe_address, dst=self.ipv6_map_address)
icmp = ICMPv6EchoRequest()
icmp.id = self.ipv6_udp_or_tcp_spoof_port
payload = "H" * 10
tx_pkt = eth / ip / icmp / payload
self.pg_send(self.pg1, tx_pkt * 1)
self.pg0.get_capture(0, timeout=1)
self.pg0.assert_nothing_captured(remark="Should drop IPv6 spoof port PSID")
#
# Map to Map - same rule, different address
#
@unittest.skip("Fixme: correct behavior needs clarification")
def test_map_t_same_rule_diff_addr_ip6_to_ip4(self):
"""MAP-T same rule, diff addr IPv6 -> IPv6"""
eth = Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac)
ip = IPv6(src=self.ipv6_cpe_address, dst=self.ipv6_map_same_rule_diff_addr)
udp = UDP(sport=self.ipv6_udp_or_tcp_map_port, dport=1025)
payload = "a" * 82
tx_pkt = eth / ip / udp / payload
self.pg_send(self.pg1, tx_pkt * 1)
rx_pkts = self.pg1.get_capture(1)
rx_pkt = rx_pkts[0]
#
# Map to Map - same rule, same address
#
@unittest.skip("Fixme: correct behavior needs clarification")
def test_map_t_same_rule_same_addr_ip6_to_ip4(self):
"""MAP-T same rule, same addr IPv6 -> IPv6"""
eth = Ether(src=self.pg1.remote_mac, dst=self.pg1.local_mac)
ip = IPv6(src=self.ipv6_cpe_address, dst=self.ipv6_map_same_rule_same_addr)
udp = UDP(sport=self.ipv6_udp_or_tcp_map_port, dport=1025)
payload = "a" * 82
tx_pkt = eth / ip / udp / payload
self.pg_send(self.pg1, tx_pkt * 1)
rx_pkts = self.pg1.get_capture(1)
rx_pkt = rx_pkts[0]
if __name__ == "__main__":
unittest.main(testRunner=VppTestRunner)
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