-#!/usr/bin/env python
+#!/usr/bin/env python3
+import ipaddress
import unittest
-import socket
-from framework import VppTestCase, VppTestRunner
+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 scapy.layers.l2 import Ether, Raw
-from scapy.layers.inet import IP, UDP, ICMP
-from scapy.layers.inet6 import IPv6
+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,
+)
class TestMAP(VppTestCase):
- """ MAP Test Case """
+ """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()
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()
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, 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)
+
+ 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
- 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 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)
- def test_map_e(self):
- """ MAP-E """
+ 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 = 64
- map_route = VppIpRoute(self,
- map_br_pfx,
- map_br_pfx_len,
- [VppRoutePath(self.pg1.remote_ip6,
- self.pg1.sw_if_index,
- proto=DpoProto.DPO_PROTO_IP6)],
- is_ip6=1)
+ 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 = socket.inet_pton(socket.AF_INET6, map_br_pfx)
- map_src = "3001::1"
- map_src_n = socket.inet_pton(socket.AF_INET6, map_src)
- client_pfx = socket.inet_pton(socket.AF_INET, "192.168.0.0")
+ 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_add_domain(map_dst,
- map_br_pfx_len,
- map_src_n,
- 128,
- client_pfx,
- 16)
+ 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('\xa5' * 100))
+ 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, map_src, "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, 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
+ # expect a decapped packet on the inside ip4 link
#
- p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
- IPv6(dst=map_src, src="2001::1") /
- IP(dst=self.pg0.remote_ip4, src='192.168.1.1') /
- UDP(sport=20000, dport=10000) /
- Raw('\xa5' * 100))
+ 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.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,
- "resovled via default route")
+ 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,
- proto=DpoProto.DPO_PROTO_IP6)],
- is_ip6=1)
+ 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(v4, map_src,
- "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
#
- pre_res_route.modify([VppRoutePath(self.pg1.remote_hosts[3].ip6,
- self.pg1.sw_if_index,
- proto=DpoProto.DPO_PROTO_IP6)])
+ 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(v4, map_src,
- "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")
-if __name__ == '__main__':
+ 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.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_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)
Code Review / vpp.git / blobdiff