-#!/usr/bin/env python
+#!/usr/bin/env python3
import ipaddress
import unittest
-from ipaddress import IPv6Network, IPv4Network
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, Raw
-from scapy.layers.inet import IP, UDP, ICMP, TCP, fragment
-from scapy.layers.inet6 import IPv6, ICMPv6TimeExceeded
+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
class TestMAP(VppTestCase):
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()
i.unconfig_ip6()
i.admin_down()
- def send_and_assert_encapped(self, tx, ip6_src, ip6_dst, dmac=None):
+ 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(tx)
+ self.pg0.add_stream(packets)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
- rx = self.pg1.get_capture(1)
- rx = rx[0]
+ 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)
- 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'
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.
self.assertEqual(rv[0].tag, tag,
"output produced incorrect tag value.")
- def test_map_e(self):
- """ MAP-E """
+ def test_map_e_udp(self):
+ """ MAP-E UDP"""
#
# Add a route to the MAP-BR
#
map_br_pfx = "2001::"
- map_br_pfx_len = 64
+ map_br_pfx_len = 32
map_route = VppIpRoute(self,
map_br_pfx,
map_br_pfx_len,
#
# Add a domain that maps from pg0 to pg1
#
- map_dst = '2001::/64'
+ 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,
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('\xa5' * 100))
- rx = self.send_and_expect(self.pg0, v4*1, self.pg0)
+ 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:
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('\xa5' * 100))
+ Raw(b'\xa5' * 100))
- self.send_and_assert_encapped(v4, "3000::1", "2001::c0a8:0:0")
+ 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,
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('\xa5' * 100))
+ Raw(b'\xa5' * 100))
rx = self.send_and_expect(self.pg1, v6*1, self.pg1)
v6_reply = v6[1]
v6_reply.hlim -= 1
#
# Fire in a V6 encapped packet.
- # expect a decapped packet on the inside ip4 link
+ # 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="2001::1") /
+ IPv6(dst='3000::1', src=map_translated_addr) /
IP(dst=self.pg0.remote_ip4, src='192.168.1.1') /
- UDP(sport=20000, dport=10000) /
- Raw('\xa5' * 100))
+ UDP(sport=10000, dport=20000) /
+ Raw(b'\xa5' * 100))
self.pg1.add_stream(p)
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.pg1.sw_if_index)])
pre_res_route.add_vpp_config()
- self.send_and_assert_encapped(v4, "3000::1",
- "2001::c0a8:0:0",
- dmac=self.pg1.remote_hosts[2].mac)
+ 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
self.pg1.sw_if_index)])
pre_res_route.add_vpp_config()
- self.send_and_assert_encapped(v4, "3000::1",
- "2001::c0a8:0:0",
- dmac=self.pg1.remote_hosts[3].mac)
+ 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
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)
+
+ frags = fragment_rfc791(v4[1], 1000)
+ 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.pg0.local_mac, src=self.pg0.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_frag(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_len(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 payload(self, len):
return 'x' * len
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('\xa5' * 100))
+ Raw(b'\xa5' * 100))
rx = self.send_and_expect(self.pg0, v4*1, self.pg0)
v4_reply = v4[1]
v4_reply.ttl -= 1
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('\xa5' * 100))
+ 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], p4_translated)
- # IPv4 TTL
+ # 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)
for p in rx:
self.validate(p[1], icmp4_reply)
- '''
- This one is broken, cause it would require hairpinning...
- # IPv4 TTL TTL1
+ # 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=254, 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
+ icmp4_reply = (IP(id=0, ttl=254, 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
ip6_hlim_expired = IPv6(hlim=0, src='2001:db8:1ab::c0a8:1:ab',
p6 = (p_ether6 / p_ip6 / payload)
self.send_and_assert_no_replies(self.pg1, p6*1)
- # Packet fragmentation
- payload = UDP(sport=40000, dport=4000) / self.payload(1453)
+ # 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_frag(p, p_ip6_translated)
+
+ self.validate_frag_payload_len(rx, UDP, payload_len)
+
+ # UDP packet fragmentation send fragments
+ 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_frag(p, p_ip6_translated)
+
+ self.validate_frag_payload_len(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:
- pass
- # TODO: Manual validation
- # self.validate(p[1], icmp4_reply)
+ self.validate_frag(p, p_ip6_translated)
- # Packet fragmentation send fragments
- payload = UDP(sport=40000, dport=4000) / self.payload(1453)
+ self.validate_frag_payload_len(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(p4, fragsize=1000)
+ 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:
- pass
- # p.show2()
- # reass_pkt = reassemble(rx)
- # p4_reply.ttl -= 1
- # p4_reply.id = 256
- # self.validate(reass_pkt, p4_reply)
+ self.validate_frag(p, p_ip6_translated)
+
+ self.validate_frag_payload_len(rx, ICMPv6EchoRequest, payload_len)
# TCP MSS clamping
self.vapi.map_param_set_tcp(1300)
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)
Code Review / vpp.git / blobdiff