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vpp/test/test_map.py
Dmitry Valter 34fa0ce8f7 tests: skip more excluded plugin tests 
Check and skip VPP_EXCLUDED_PLUGINS tests for most of plugins.

Type: improvement
Signed-off-by: Dmitry Valter <d-valter@yandex-team.com>
Change-Id: I23fd3666729251c639aa8da72a676058e3f5bb4e
2024-07-12 15:43:24 +00:00

1054 lines
34 KiB
Python
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#!/usr/bin/env python3
import ipaddress
import unittest
from framework import VppTestCase
from asfframework import VppTestRunner
from vpp_ip import DpoProto
from vpp_ip_route import VppIpRoute, VppRoutePath
from util import fragment_rfc791, fragment_rfc8200
from config import config
import scapy.compat
from scapy.layers.l2 import Ether
from scapy.packet import Raw
from scapy.layers.inet import IP, UDP, ICMP, TCP
from scapy.layers.inet6 import (
IPv6,
ICMPv6TimeExceeded,
IPv6ExtHdrFragment,
ICMPv6EchoRequest,
ICMPv6DestUnreach,
)
@unittest.skipIf("map" in config.excluded_plugins, "Exclude MAP plugin tests")
class TestMAP(VppTestCase):
"""MAP Test Case"""
@classmethod
def setUpClass(cls):
super(TestMAP, cls).setUpClass()
@classmethod
def tearDownClass(cls):
super(TestMAP, cls).tearDownClass()
def setUp(self):
super(TestMAP, self).setUp()
# create 2 pg interfaces
self.create_pg_interfaces(range(4))
# pg0 is 'inside' IPv4
self.pg0.admin_up()
self.pg0.config_ip4()
self.pg0.resolve_arp()
self.pg0.generate_remote_hosts(2)
self.pg0.configure_ipv4_neighbors()
# pg1 is 'outside' IPv6
self.pg1.admin_up()
self.pg1.config_ip6()
self.pg1.generate_remote_hosts(4)
self.pg1.configure_ipv6_neighbors()
def tearDown(self):
super(TestMAP, self).tearDown()
for i in self.pg_interfaces:
for t in (0, 1):
self.vapi.map_if_enable_disable(
is_enable=0, sw_if_index=i.sw_if_index, is_translation=t
)
i.unconfig_ip4()
i.unconfig_ip6()
i.admin_down()
def send_and_assert_encapped(self, packets, ip6_src, ip6_dst, dmac=None):
if not dmac:
dmac = self.pg1.remote_mac
self.pg0.add_stream(packets)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
capture = self.pg1.get_capture(len(packets))
for rx, tx in zip(capture, packets):
self.assertEqual(rx[Ether].dst, dmac)
self.assertEqual(rx[IP].src, tx[IP].src)
self.assertEqual(rx[IPv6].src, ip6_src)
self.assertEqual(rx[IPv6].dst, ip6_dst)
def send_and_assert_encapped_one(self, packet, ip6_src, ip6_dst, dmac=None):
return self.send_and_assert_encapped([packet], ip6_src, ip6_dst, dmac)
def test_api_map_domain_dump(self):
map_dst = "2001::/64"
map_src = "3000::1/128"
client_pfx = "192.168.0.0/16"
tag = "MAP-E tag."
index = self.vapi.map_add_domain(
ip4_prefix=client_pfx, ip6_prefix=map_dst, ip6_src=map_src, tag=tag
).index
rv = self.vapi.map_domain_dump()
# restore the state early so as to not impact subsequent tests.
# If an assert fails, we will not get the chance to do it at the end.
self.vapi.map_del_domain(index=index)
self.assertGreater(len(rv), 0, "Expected output from 'map_domain_dump'")
# typedefs are returned as ipaddress objects.
# wrap results in str() ugh! to avoid the need to call unicode.
self.assertEqual(str(rv[0].ip4_prefix), client_pfx)
self.assertEqual(str(rv[0].ip6_prefix), map_dst)
self.assertEqual(str(rv[0].ip6_src), map_src)
self.assertEqual(rv[0].tag, tag, "output produced incorrect tag value.")
def create_domains(self, ip4_pfx_str, ip6_pfx_str, ip6_src_str):
ip4_pfx = ipaddress.ip_network(ip4_pfx_str)
ip6_dst = ipaddress.ip_network(ip6_pfx_str)
mod = ip4_pfx.num_addresses / 1024
indicies = []
for i in range(ip4_pfx.num_addresses):
rv = self.vapi.map_add_domain(
ip6_prefix=ip6_pfx_str,
ip4_prefix=str(ip4_pfx[i]) + "/32",
ip6_src=ip6_src_str,
)
indicies.append(rv.index)
return indicies
def test_api_map_domains_get(self):
# Create a bunch of domains
no_domains = 4096 # This must be large enough to ensure VPP suspends
domains = self.create_domains("130.67.0.0/20", "2001::/32", "2001::1/128")
self.assertEqual(len(domains), no_domains)
d = []
cursor = 0
# Invalid cursor
rv, details = self.vapi.map_domains_get(cursor=no_domains + 10)
self.assertEqual(rv.retval, -7)
# Delete a domain in the middle of walk
rv, details = self.vapi.map_domains_get(cursor=0)
self.assertEqual(rv.retval, -165)
self.vapi.map_del_domain(index=rv.cursor)
domains.remove(rv.cursor)
# Continue at point of deleted cursor
rv, details = self.vapi.map_domains_get(cursor=rv.cursor)
self.assertIn(rv.retval, [0, -165])
d = list(self.vapi.vpp.details_iter(self.vapi.map_domains_get))
self.assertEqual(len(d), no_domains - 1)
# Clean up
for i in domains:
self.vapi.map_del_domain(index=i)
def test_map_e_udp(self):
"""MAP-E UDP"""
#
# Add a route to the MAP-BR
#
map_br_pfx = "2001::"
map_br_pfx_len = 32
map_route = VppIpRoute(
self,
map_br_pfx,
map_br_pfx_len,
[VppRoutePath(self.pg1.remote_ip6, self.pg1.sw_if_index)],
)
map_route.add_vpp_config()
#
# Add a domain that maps from pg0 to pg1
#
map_dst = "2001::/32"
map_src = "3000::1/128"
client_pfx = "192.168.0.0/16"
map_translated_addr = "2001:0:101:7000:0:c0a8:101:7"
tag = "MAP-E tag."
self.vapi.map_add_domain(
ip4_prefix=client_pfx,
ip6_prefix=map_dst,
ip6_src=map_src,
ea_bits_len=20,
psid_offset=4,
psid_length=4,
tag=tag,
)
self.vapi.map_param_set_security_check(enable=1, fragments=1)
# Enable MAP on interface.
self.vapi.map_if_enable_disable(
is_enable=1, sw_if_index=self.pg0.sw_if_index, is_translation=0
)
# Ensure MAP doesn't steal all packets!
v4 = (
Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
/ IP(src=self.pg0.remote_ip4, dst=self.pg0.remote_ip4)
/ UDP(sport=20000, dport=10000)
/ Raw(b"\xa5" * 100)
)
rx = self.send_and_expect(self.pg0, v4 * 4, self.pg0)
v4_reply = v4[1]
v4_reply.ttl -= 1
for p in rx:
self.validate(p[1], v4_reply)
#
# Fire in a v4 packet that will be encapped to the BR
#
v4 = (
Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
/ IP(src=self.pg0.remote_ip4, dst="192.168.1.1")
/ UDP(sport=20000, dport=10000)
/ Raw(b"\xa5" * 100)
)
self.send_and_assert_encapped(v4 * 4, "3000::1", map_translated_addr)
#
# Verify reordered fragments are able to pass as well
#
v4 = (
Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
/ IP(id=1, src=self.pg0.remote_ip4, dst="192.168.1.1")
/ UDP(sport=20000, dport=10000)
/ Raw(b"\xa5" * 1000)
)
frags = fragment_rfc791(v4, 400)
frags.reverse()
self.send_and_assert_encapped(frags, "3000::1", map_translated_addr)
# Enable MAP on interface.
self.vapi.map_if_enable_disable(
is_enable=1, sw_if_index=self.pg1.sw_if_index, is_translation=0
)
# Ensure MAP doesn't steal all packets
v6 = (
Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
/ IPv6(src=self.pg1.remote_ip6, dst=self.pg1.remote_ip6)
/ UDP(sport=20000, dport=10000)
/ Raw(b"\xa5" * 100)
)
rx = self.send_and_expect(self.pg1, v6 * 1, self.pg1)
v6_reply = v6[1]
v6_reply.hlim -= 1
for p in rx:
self.validate(p[1], v6_reply)
#
# Fire in a V6 encapped packet.
# expect a decapped packet on the inside ip4 link
#
p = (
Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
/ IPv6(dst="3000::1", src=map_translated_addr)
/ IP(dst=self.pg0.remote_ip4, src="192.168.1.1")
/ UDP(sport=10000, dport=20000)
/ Raw(b"\xa5" * 100)
)
self.pg1.add_stream(p)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg0.get_capture(1)
rx = rx[0]
self.assertFalse(rx.haslayer(IPv6))
self.assertEqual(rx[IP].src, p[IP].src)
self.assertEqual(rx[IP].dst, p[IP].dst)
#
# Verify encapped reordered fragments pass as well
#
p = (
IP(id=1, dst=self.pg0.remote_ip4, src="192.168.1.1")
/ UDP(sport=10000, dport=20000)
/ Raw(b"\xa5" * 1500)
)
frags = fragment_rfc791(p, 400)
frags.reverse()
stream = (
Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
/ IPv6(dst="3000::1", src=map_translated_addr)
/ x
for x in frags
)
self.pg1.add_stream(stream)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg0.get_capture(len(frags))
for r in rx:
self.assertFalse(r.haslayer(IPv6))
self.assertEqual(r[IP].src, p[IP].src)
self.assertEqual(r[IP].dst, p[IP].dst)
# Verify that fragments pass even if ipv6 layer is fragmented
stream = (IPv6(dst="3000::1", src=map_translated_addr) / x for x in frags)
v6_stream = [
Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) / x
for i in range(len(frags))
for x in fragment_rfc8200(
IPv6(dst="3000::1", src=map_translated_addr) / frags[i], i, 200
)
]
self.pg1.add_stream(v6_stream)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg0.get_capture(len(frags))
for r in rx:
self.assertFalse(r.haslayer(IPv6))
self.assertEqual(r[IP].src, p[IP].src)
self.assertEqual(r[IP].dst, p[IP].dst)
#
# Pre-resolve. No API for this!!
#
self.vapi.ppcli("map params pre-resolve ip6-nh 4001::1")
self.send_and_assert_no_replies(self.pg0, v4, "resolved via default route")
#
# Add a route to 4001::1. Expect the encapped traffic to be
# sent via that routes next-hop
#
pre_res_route = VppIpRoute(
self,
"4001::1",
128,
[VppRoutePath(self.pg1.remote_hosts[2].ip6, self.pg1.sw_if_index)],
)
pre_res_route.add_vpp_config()
self.send_and_assert_encapped_one(
v4, "3000::1", map_translated_addr, dmac=self.pg1.remote_hosts[2].mac
)
#
# change the route to the pre-solved next-hop
#
pre_res_route.modify(
[VppRoutePath(self.pg1.remote_hosts[3].ip6, self.pg1.sw_if_index)]
)
pre_res_route.add_vpp_config()
self.send_and_assert_encapped_one(
v4, "3000::1", map_translated_addr, dmac=self.pg1.remote_hosts[3].mac
)
#
# cleanup. The test infra's object registry will ensure
# the route is really gone and thus that the unresolve worked.
#
pre_res_route.remove_vpp_config()
self.vapi.ppcli("map params pre-resolve del ip6-nh 4001::1")
def test_map_e_inner_frag(self):
"""MAP-E Inner fragmentation"""
#
# Add a route to the MAP-BR
#
map_br_pfx = "2001::"
map_br_pfx_len = 32
map_route = VppIpRoute(
self,
map_br_pfx,
map_br_pfx_len,
[VppRoutePath(self.pg1.remote_ip6, self.pg1.sw_if_index)],
)
map_route.add_vpp_config()
#
# Add a domain that maps from pg0 to pg1
#
map_dst = "2001::/32"
map_src = "3000::1/128"
client_pfx = "192.168.0.0/16"
map_translated_addr = "2001:0:101:7000:0:c0a8:101:7"
tag = "MAP-E tag."
self.vapi.map_add_domain(
ip4_prefix=client_pfx,
ip6_prefix=map_dst,
ip6_src=map_src,
ea_bits_len=20,
psid_offset=4,
psid_length=4,
mtu=1000,
tag=tag,
)
# Enable MAP on interface.
self.vapi.map_if_enable_disable(
is_enable=1, sw_if_index=self.pg0.sw_if_index, is_translation=0
)
# Enable inner fragmentation
self.vapi.map_param_set_fragmentation(inner=1)
v4 = (
Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
/ IP(src=self.pg0.remote_ip4, dst="192.168.1.1")
/ UDP(sport=20000, dport=10000)
/ Raw(b"\xa5" * 1300)
)
self.pg_send(self.pg0, v4 * 1)
rx = self.pg1.get_capture(2)
# 1000-sizeof(ip6_header_t) = 960.
frags = fragment_rfc791(v4[1], 960)
frags[0].id = 0
frags[1].id = 0
frags[0].ttl -= 1
frags[1].ttl -= 1
frags[0].chksum = 0
frags[1].chksum = 0
v6_reply1 = IPv6(src="3000::1", dst=map_translated_addr, hlim=63) / frags[0]
v6_reply2 = IPv6(src="3000::1", dst=map_translated_addr, hlim=63) / frags[1]
rx[0][1].fl = 0
rx[1][1].fl = 0
rx[0][1][IP].id = 0
rx[1][1][IP].id = 0
rx[0][1][IP].chksum = 0
rx[1][1][IP].chksum = 0
self.validate(rx[0][1], v6_reply1)
self.validate(rx[1][1], v6_reply2)
def test_map_e_tcp_mss(self):
"""MAP-E TCP MSS"""
#
# Add a route to the MAP-BR
#
map_br_pfx = "2001::"
map_br_pfx_len = 32
map_route = VppIpRoute(
self,
map_br_pfx,
map_br_pfx_len,
[VppRoutePath(self.pg1.remote_ip6, self.pg1.sw_if_index)],
)
map_route.add_vpp_config()
#
# Add a domain that maps from pg0 to pg1
#
map_dst = "2001::/32"
map_src = "3000::1/128"
client_pfx = "192.168.0.0/16"
map_translated_addr = "2001:0:101:5000:0:c0a8:101:5"
tag = "MAP-E TCP tag."
self.vapi.map_add_domain(
ip4_prefix=client_pfx,
ip6_prefix=map_dst,
ip6_src=map_src,
ea_bits_len=20,
psid_offset=4,
psid_length=4,
tag=tag,
)
# Enable MAP on pg0 interface.
self.vapi.map_if_enable_disable(
is_enable=1, sw_if_index=self.pg0.sw_if_index, is_translation=0
)
# Enable MAP on pg1 interface.
self.vapi.map_if_enable_disable(
is_enable=1, sw_if_index=self.pg1.sw_if_index, is_translation=0
)
# TCP MSS clamping
mss_clamp = 1300
self.vapi.map_param_set_tcp(mss_clamp)
#
# Send a v4 packet that will be encapped.
#
p_ether = Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
p_ip4 = IP(src=self.pg0.remote_ip4, dst="192.168.1.1")
p_tcp = TCP(sport=20000, dport=30000, flags="S", options=[("MSS", 1455)])
p4 = p_ether / p_ip4 / p_tcp
self.pg1.add_stream(p4)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
rx = self.pg1.get_capture(1)
rx = rx[0]
self.assertTrue(rx.haslayer(IPv6))
self.assertEqual(rx[IP].src, p4[IP].src)
self.assertEqual(rx[IP].dst, p4[IP].dst)
self.assertEqual(rx[IPv6].src, "3000::1")
self.assertEqual(rx[TCP].options, TCP(options=[("MSS", mss_clamp)]).options)
def validate(self, rx, expected):
self.assertEqual(rx, expected.__class__(scapy.compat.raw(expected)))
def validate_frag6(self, p6_frag, p_ip6_expected):
self.assertFalse(p6_frag.haslayer(IP))
self.assertTrue(p6_frag.haslayer(IPv6))
self.assertTrue(p6_frag.haslayer(IPv6ExtHdrFragment))
self.assertEqual(p6_frag[IPv6].src, p_ip6_expected.src)
self.assertEqual(p6_frag[IPv6].dst, p_ip6_expected.dst)
def validate_frag_payload_len6(self, rx, proto, payload_len_expected):
payload_total = 0
for p in rx:
payload_total += p[IPv6].plen
# First fragment has proto
payload_total -= len(proto())
# Every fragment has IPv6 fragment header
payload_total -= len(IPv6ExtHdrFragment()) * len(rx)
self.assertEqual(payload_total, payload_len_expected)
def validate_frag4(self, p4_frag, p_ip4_expected):
self.assertFalse(p4_frag.haslayer(IPv6))
self.assertTrue(p4_frag.haslayer(IP))
self.assertTrue(p4_frag[IP].frag != 0 or p4_frag[IP].flags.MF)
self.assertEqual(p4_frag[IP].src, p_ip4_expected.src)
self.assertEqual(p4_frag[IP].dst, p_ip4_expected.dst)
def validate_frag_payload_len4(self, rx, proto, payload_len_expected):
payload_total = 0
for p in rx:
payload_total += len(p[IP].payload)
# First fragment has proto
payload_total -= len(proto())
self.assertEqual(payload_total, payload_len_expected)
def payload(self, len):
return "x" * len
def test_map_t(self):
"""MAP-T"""
#
# Add a domain that maps from pg0 to pg1
#
map_dst = "2001:db8::/32"
map_src = "1234:5678:90ab:cdef::/64"
ip4_pfx = "192.168.0.0/24"
tag = "MAP-T Tag."
self.vapi.map_add_domain(
ip6_prefix=map_dst,
ip4_prefix=ip4_pfx,
ip6_src=map_src,
ea_bits_len=16,
psid_offset=6,
psid_length=4,
mtu=1500,
tag=tag,
)
# 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
)
# Ensure MAP doesn't steal all packets!
v4 = (
Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
/ IP(src=self.pg0.remote_ip4, dst=self.pg0.remote_ip4)
/ UDP(sport=20000, dport=10000)
/ Raw(b"\xa5" * 100)
)
rx = self.send_and_expect(self.pg0, v4 * 1, self.pg0)
v4_reply = v4[1]
v4_reply.ttl -= 1
for p in rx:
self.validate(p[1], v4_reply)
# Ensure MAP doesn't steal all packets
v6 = (
Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
/ IPv6(src=self.pg1.remote_ip6, dst=self.pg1.remote_ip6)
/ UDP(sport=20000, dport=10000)
/ Raw(b"\xa5" * 100)
)
rx = self.send_and_expect(self.pg1, v6 * 1, self.pg1)
v6_reply = v6[1]
v6_reply.hlim -= 1
for p in rx:
self.validate(p[1], v6_reply)
map_route = VppIpRoute(
self,
"2001:db8::",
32,
[
VppRoutePath(
self.pg1.remote_ip6,
self.pg1.sw_if_index,
proto=DpoProto.DPO_PROTO_IP6,
)
],
)
map_route.add_vpp_config()
#
# Send a v4 packet that will be translated
#
p_ether = Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
p_ip4 = IP(src=self.pg0.remote_ip4, dst="192.168.0.1")
payload = TCP(sport=0xABCD, dport=0xABCD)
p4 = p_ether / p_ip4 / payload
p6_translated = (
IPv6(src="1234:5678:90ab:cdef:ac:1001:200:0", dst="2001:db8:1f0::c0a8:1:f")
/ payload
)
p6_translated.hlim -= 1
rx = self.send_and_expect(self.pg0, p4 * 1, self.pg1)
for p in rx:
self.validate(p[1], p6_translated)
# Send back an IPv6 packet that will be "untranslated"
p_ether6 = Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
p_ip6 = IPv6(
src="2001:db8:1f0::c0a8:1:f", dst="1234:5678:90ab:cdef:ac:1001:200:0"
)
p6 = p_ether6 / p_ip6 / payload
p4_translated = IP(src="192.168.0.1", dst=self.pg0.remote_ip4) / payload
p4_translated.id = 0
p4_translated.ttl -= 1
rx = self.send_and_expect(self.pg1, p6 * 1, self.pg0)
for p in rx:
self.validate(p[1], p4_translated)
# IPv4 TTL=0
ip4_ttl_expired = IP(src=self.pg0.remote_ip4, dst="192.168.0.1", ttl=0)
p4 = p_ether / ip4_ttl_expired / payload
icmp4_reply = (
IP(id=0, ttl=255, src=self.pg0.local_ip4, dst=self.pg0.remote_ip4)
/ ICMP(type="time-exceeded", code="ttl-zero-during-transit")
/ IP(src=self.pg0.remote_ip4, dst="192.168.0.1", ttl=0)
/ payload
)
rx = self.send_and_expect(self.pg0, p4 * 1, self.pg0)
for p in rx:
self.validate(p[1], icmp4_reply)
# IPv4 TTL=1
ip4_ttl_expired = IP(src=self.pg0.remote_ip4, dst="192.168.0.1", ttl=1)
p4 = p_ether / ip4_ttl_expired / payload
icmp4_reply = (
IP(id=0, ttl=255, src=self.pg0.local_ip4, dst=self.pg0.remote_ip4)
/ ICMP(type="time-exceeded", code="ttl-zero-during-transit")
/ IP(src=self.pg0.remote_ip4, dst="192.168.0.1", ttl=1)
/ payload
)
rx = self.send_and_expect(self.pg0, p4 * 1, self.pg0)
for p in rx:
self.validate(p[1], icmp4_reply)
# IPv6 Hop limit at BR
ip6_hlim_expired = IPv6(
hlim=1,
src="2001:db8:1ab::c0a8:1:ab",
dst="1234:5678:90ab:cdef:ac:1001:200:0",
)
p6 = p_ether6 / ip6_hlim_expired / payload
icmp6_reply = (
IPv6(hlim=255, src=self.pg1.local_ip6, dst="2001:db8:1ab::c0a8:1:ab")
/ ICMPv6TimeExceeded(code=0)
/ IPv6(
src="2001:db8:1ab::c0a8:1:ab",
dst="1234:5678:90ab:cdef:ac:1001:200:0",
hlim=1,
)
/ payload
)
rx = self.send_and_expect(self.pg1, p6 * 1, self.pg1)
for p in rx:
self.validate(p[1], icmp6_reply)
# IPv6 Hop limit beyond BR
ip6_hlim_expired = IPv6(
hlim=0,
src="2001:db8:1ab::c0a8:1:ab",
dst="1234:5678:90ab:cdef:ac:1001:200:0",
)
p6 = p_ether6 / ip6_hlim_expired / payload
icmp6_reply = (
IPv6(hlim=255, src=self.pg1.local_ip6, dst="2001:db8:1ab::c0a8:1:ab")
/ ICMPv6TimeExceeded(code=0)
/ IPv6(
src="2001:db8:1ab::c0a8:1:ab",
dst="1234:5678:90ab:cdef:ac:1001:200:0",
hlim=0,
)
/ payload
)
rx = self.send_and_expect(self.pg1, p6 * 1, self.pg1)
for p in rx:
self.validate(p[1], icmp6_reply)
# IPv4 Well-known port
p_ip4 = IP(src=self.pg0.remote_ip4, dst="192.168.0.1")
payload = UDP(sport=200, dport=200)
p4 = p_ether / p_ip4 / payload
self.send_and_assert_no_replies(self.pg0, p4 * 1)
# IPv6 Well-known port
payload = UDP(sport=200, dport=200)
p6 = p_ether6 / p_ip6 / payload
self.send_and_assert_no_replies(self.pg1, p6 * 1)
# UDP packet fragmentation
payload_len = 1453
payload = UDP(sport=40000, dport=4000) / self.payload(payload_len)
p4 = p_ether / p_ip4 / payload
self.pg_enable_capture()
self.pg0.add_stream(p4)
self.pg_start()
rx = self.pg1.get_capture(2)
p_ip6_translated = IPv6(
src="1234:5678:90ab:cdef:ac:1001:200:0", dst="2001:db8:1e0::c0a8:1:e"
)
for p in rx:
self.validate_frag6(p, p_ip6_translated)
self.validate_frag_payload_len6(rx, UDP, payload_len)
# UDP packet fragmentation send fragments
payload_len = 1453
payload = UDP(sport=40000, dport=4000) / self.payload(payload_len)
p4 = p_ether / p_ip4 / payload
frags = fragment_rfc791(p4, fragsize=1000)
self.pg_enable_capture()
self.pg0.add_stream(frags)
self.pg_start()
rx = self.pg1.get_capture(2)
for p in rx:
self.validate_frag6(p, p_ip6_translated)
self.validate_frag_payload_len6(rx, UDP, payload_len)
# Send back an fragmented IPv6 UDP packet that will be "untranslated"
payload = UDP(sport=4000, dport=40000) / self.payload(payload_len)
p_ether6 = Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
p_ip6 = IPv6(
src="2001:db8:1e0::c0a8:1:e", dst="1234:5678:90ab:cdef:ac:1001:200:0"
)
p6 = p_ether6 / p_ip6 / payload
frags6 = fragment_rfc8200(p6, identification=0xDCBA, fragsize=1000)
p_ip4_translated = IP(src="192.168.0.1", dst=self.pg0.remote_ip4)
p4_translated = p_ip4_translated / payload
p4_translated.id = 0
p4_translated.ttl -= 1
self.pg_enable_capture()
self.pg1.add_stream(frags6)
self.pg_start()
rx = self.pg0.get_capture(2)
for p in rx:
self.validate_frag4(p, p4_translated)
self.validate_frag_payload_len4(rx, UDP, payload_len)
# ICMP packet fragmentation
payload = ICMP(id=6529) / self.payload(payload_len)
p4 = p_ether / p_ip4 / payload
self.pg_enable_capture()
self.pg0.add_stream(p4)
self.pg_start()
rx = self.pg1.get_capture(2)
p_ip6_translated = IPv6(
src="1234:5678:90ab:cdef:ac:1001:200:0", dst="2001:db8:160::c0a8:1:6"
)
for p in rx:
self.validate_frag6(p, p_ip6_translated)
self.validate_frag_payload_len6(rx, ICMPv6EchoRequest, payload_len)
# ICMP packet fragmentation send fragments
payload = ICMP(id=6529) / self.payload(payload_len)
p4 = p_ether / p_ip4 / payload
frags = fragment_rfc791(p4, fragsize=1000)
self.pg_enable_capture()
self.pg0.add_stream(frags)
self.pg_start()
rx = self.pg1.get_capture(2)
for p in rx:
self.validate_frag6(p, p_ip6_translated)
self.validate_frag_payload_len6(rx, ICMPv6EchoRequest, payload_len)
# TCP MSS clamping
self.vapi.map_param_set_tcp(1300)
#
# Send a v4 TCP SYN packet that will be translated and MSS clamped
#
p_ether = Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
p_ip4 = IP(src=self.pg0.remote_ip4, dst="192.168.0.1")
payload = TCP(sport=0xABCD, dport=0xABCD, flags="S", options=[("MSS", 1460)])
p4 = p_ether / p_ip4 / payload
p6_translated = (
IPv6(src="1234:5678:90ab:cdef:ac:1001:200:0", dst="2001:db8:1f0::c0a8:1:f")
/ payload
)
p6_translated.hlim -= 1
p6_translated[TCP].options = [("MSS", 1300)]
rx = self.send_and_expect(self.pg0, p4 * 1, self.pg1)
for p in rx:
self.validate(p[1], p6_translated)
# Send back an IPv6 packet that will be "untranslated"
p_ether6 = Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
p_ip6 = IPv6(
src="2001:db8:1f0::c0a8:1:f", dst="1234:5678:90ab:cdef:ac:1001:200:0"
)
p6 = p_ether6 / p_ip6 / payload
p4_translated = IP(src="192.168.0.1", dst=self.pg0.remote_ip4) / payload
p4_translated.id = 0
p4_translated.ttl -= 1
p4_translated[TCP].options = [("MSS", 1300)]
rx = self.send_and_expect(self.pg1, p6 * 1, self.pg0)
for p in rx:
self.validate(p[1], p4_translated)
# TCP MSS clamping cleanup
self.vapi.map_param_set_tcp(0)
# Enable icmp6 param to get back ICMPv6 unreachable messages in case
# of security check fails
self.vapi.map_param_set_icmp6(enable_unreachable=1)
# Send back an IPv6 packet that will be droppped due to security
# check fail
p_ether6 = Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
p_ip6_sec_check_fail = IPv6(
src="2001:db8:1fe::c0a8:1:f", dst="1234:5678:90ab:cdef:ac:1001:200:0"
)
payload = TCP(sport=0xABCD, dport=0xABCD)
p6 = p_ether6 / p_ip6_sec_check_fail / payload
self.pg_send(self.pg1, p6 * 1)
self.pg0.get_capture(0, timeout=1)
rx = self.pg1.get_capture(1)
icmp6_reply = (
IPv6(hlim=255, src=self.pg1.local_ip6, dst="2001:db8:1fe::c0a8:1:f")
/ ICMPv6DestUnreach(code=5)
/ p_ip6_sec_check_fail
/ payload
)
for p in rx:
self.validate(p[1], icmp6_reply)
# ICMPv6 unreachable messages cleanup
self.vapi.map_param_set_icmp6(enable_unreachable=0)
def test_map_t_ip6_psid(self):
"""MAP-T v6->v4 PSID validation"""
#
# Add a domain that maps from pg0 to pg1
#
map_dst = "2001:db8::/32"
map_src = "1234:5678:90ab:cdef::/64"
ip4_pfx = "192.168.0.0/24"
tag = "MAP-T Test Domain"
self.vapi.map_add_domain(
ip6_prefix=map_dst,
ip4_prefix=ip4_pfx,
ip6_src=map_src,
ea_bits_len=16,
psid_offset=6,
psid_length=4,
mtu=1500,
tag=tag,
)
# 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
)
map_route = VppIpRoute(
self,
"2001:db8::",
32,
[
VppRoutePath(
self.pg1.remote_ip6,
self.pg1.sw_if_index,
proto=DpoProto.DPO_PROTO_IP6,
)
],
)
map_route.add_vpp_config()
p_ether6 = Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
p_ip6 = IPv6(
src="2001:db8:1f0::c0a8:1:f", dst="1234:5678:90ab:cdef:ac:1001:200:0"
)
# Send good IPv6 source port, ensure translated IPv4 received
payload = TCP(sport=0xABCD, dport=80)
p6 = p_ether6 / p_ip6 / payload
p4_translated = IP(src="192.168.0.1", dst=self.pg0.remote_ip4) / payload
p4_translated.id = 0
p4_translated.ttl -= 1
rx = self.send_and_expect(self.pg1, p6 * 1, self.pg0)
for p in rx:
self.validate(p[1], p4_translated)
# Send bad IPv6 source port, ensure translated IPv4 not received
payload = TCP(sport=0xDCBA, dport=80)
p6 = p_ether6 / p_ip6 / payload
self.send_and_assert_no_replies(self.pg1, p6 * 1)
def test_map_t_pre_resolve(self):
"""MAP-T pre-resolve"""
# Add a domain that maps from pg0 to pg1
map_dst = "2001:db8::/32"
map_src = "1234:5678:90ab:cdef::/64"
ip4_pfx = "192.168.0.0/24"
tag = "MAP-T Test Domain."
self.vapi.map_add_domain(
ip6_prefix=map_dst,
ip4_prefix=ip4_pfx,
ip6_src=map_src,
ea_bits_len=16,
psid_offset=6,
psid_length=4,
mtu=1500,
tag=tag,
)
# 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
)
# Enable pre-resolve option
self.vapi.map_param_add_del_pre_resolve(
ip4_nh_address="10.1.2.3", ip6_nh_address="4001::1", is_add=1
)
# Add a route to 4001::1 and expect the translated traffic to be
# sent via that route next-hop.
pre_res_route6 = VppIpRoute(
self,
"4001::1",
128,
[VppRoutePath(self.pg1.remote_hosts[2].ip6, self.pg1.sw_if_index)],
)
pre_res_route6.add_vpp_config()
# Add a route to 10.1.2.3 and expect the "untranslated" traffic to be
# sent via that route next-hop.
pre_res_route4 = VppIpRoute(
self,
"10.1.2.3",
32,
[VppRoutePath(self.pg0.remote_hosts[1].ip4, self.pg0.sw_if_index)],
)
pre_res_route4.add_vpp_config()
# Send an IPv4 packet that will be translated
p_ether = Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac)
p_ip4 = IP(src=self.pg0.remote_ip4, dst="192.168.0.1")
payload = TCP(sport=0xABCD, dport=0xABCD)
p4 = p_ether / p_ip4 / payload
p6_translated = (
IPv6(src="1234:5678:90ab:cdef:ac:1001:200:0", dst="2001:db8:1f0::c0a8:1:f")
/ payload
)
p6_translated.hlim -= 1
rx = self.send_and_expect(self.pg0, p4 * 1, self.pg1)
for p in rx:
self.assertEqual(p[Ether].dst, self.pg1.remote_hosts[2].mac)
self.validate(p[1], p6_translated)
# Send back an IPv6 packet that will be "untranslated"
p_ether6 = Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac)
p_ip6 = IPv6(
src="2001:db8:1f0::c0a8:1:f", dst="1234:5678:90ab:cdef:ac:1001:200:0"
)
p6 = p_ether6 / p_ip6 / payload
p4_translated = IP(src="192.168.0.1", dst=self.pg0.remote_ip4) / payload
p4_translated.id = 0
p4_translated.ttl -= 1
rx = self.send_and_expect(self.pg1, p6 * 1, self.pg0)
for p in rx:
self.assertEqual(p[Ether].dst, self.pg0.remote_hosts[1].mac)
self.validate(p[1], p4_translated)
# Cleanup pre-resolve option
self.vapi.map_param_add_del_pre_resolve(
ip4_nh_address="10.1.2.3", ip6_nh_address="4001::1", is_add=0
)
if __name__ == "__main__":
unittest.main(testRunner=VppTestRunner)
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