#!/usr/bin/env python
import unittest
-from socket import AF_INET6
+import socket
from framework import VppTestCase, VppTestRunner
+from util import ppp, ip6_normalize
from vpp_sub_interface import VppSubInterface, VppDot1QSubint
from vpp_pg_interface import is_ipv6_misc
from vpp_ip_route import VppIpRoute, VppRoutePath, find_route, VppIpMRoute, \
VppMRoutePath, MRouteItfFlags, MRouteEntryFlags, VppMplsIpBind, \
- VppMplsRoute
+ VppMplsRoute, DpoProto, VppMplsTable
from vpp_neighbor import find_nbr, VppNeighbor
from scapy.packet import Raw
from scapy.layers.l2 import Ether, Dot1Q
-from scapy.layers.inet6 import IPv6, UDP, ICMPv6ND_NS, ICMPv6ND_RS, \
+from scapy.layers.inet6 import IPv6, UDP, TCP, ICMPv6ND_NS, ICMPv6ND_RS, \
ICMPv6ND_RA, ICMPv6NDOptSrcLLAddr, getmacbyip6, ICMPv6MRD_Solicitation, \
ICMPv6NDOptMTU, ICMPv6NDOptSrcLLAddr, ICMPv6NDOptPrefixInfo, \
- ICMPv6ND_NA, ICMPv6NDOptDstLLAddr, ICMPv6DestUnreach, icmp6types
-
-from util import ppp
+ ICMPv6ND_NA, ICMPv6NDOptDstLLAddr, ICMPv6DestUnreach, icmp6types, \
+ ICMPv6TimeExceeded
from scapy.utils6 import in6_getnsma, in6_getnsmac, in6_ptop, in6_islladdr, \
in6_mactoifaceid, in6_ismaddr
from scapy.utils import inet_pton, inet_ntop
from scapy.contrib.mpls import MPLS
+AF_INET6 = socket.AF_INET6
+
+
def mk_ll_addr(mac):
euid = in6_mactoifaceid(mac)
addr = "fe80::" + euid
dll = rx[ICMPv6NDOptDstLLAddr]
self.assertEqual(dll.lladdr, intf.local_mac)
+ def validate_ns(self, intf, rx, tgt_ip):
+ nsma = in6_getnsma(inet_pton(AF_INET6, tgt_ip))
+ dst_ip = inet_ntop(AF_INET6, nsma)
+
+ # NS is broadcast
+ self.assertEqual(rx[Ether].dst, "ff:ff:ff:ff:ff:ff")
+
+ # and from the router's MAC
+ self.assertEqual(rx[Ether].src, intf.local_mac)
+
+ # the rx'd NS should be addressed to an mcast address
+ # derived from the target address
+ self.assertEqual(in6_ptop(rx[IPv6].dst), in6_ptop(dst_ip))
+
+ # expect the tgt IP in the NS header
+ ns = rx[ICMPv6ND_NS]
+ self.assertEqual(in6_ptop(ns.tgt), in6_ptop(tgt_ip))
+
+ # packet is from the router's local address
+ self.assertEqual(in6_ptop(rx[IPv6].src), intf.local_ip6)
+
+ # Src link-layer options should have the router's MAC
+ sll = rx[ICMPv6NDOptSrcLLAddr]
+ self.assertEqual(sll.lladdr, intf.local_mac)
+
def send_and_expect_ra(self, intf, pkts, remark, dst_ip=None,
filter_out_fn=is_ipv6_misc):
intf.add_stream(pkts)
rx = rx[0]
self.validate_na(intf, rx, dst_ip, tgt_ip)
- def send_and_assert_no_replies(self, intf, pkts, remark):
- intf.add_stream(pkts)
+ def send_and_expect_ns(self, tx_intf, rx_intf, pkts, tgt_ip,
+ filter_out_fn=is_ipv6_misc):
+ tx_intf.add_stream(pkts)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
- for i in self.pg_interfaces:
- i.get_capture(0)
- i.assert_nothing_captured(remark=remark)
+ rx = rx_intf.get_capture(1, filter_out_fn=filter_out_fn)
+
+ self.assertEqual(len(rx), 1)
+ rx = rx[0]
+ self.validate_ns(rx_intf, rx, tgt_ip)
+
+ def verify_ip(self, rx, smac, dmac, sip, dip):
+ ether = rx[Ether]
+ self.assertEqual(ether.dst, dmac)
+ self.assertEqual(ether.src, smac)
+
+ ip = rx[IPv6]
+ self.assertEqual(ip.src, sip)
+ self.assertEqual(ip.dst, dip)
class TestIPv6(TestIPv6ND):
128,
inet=AF_INET6))
+ def test_ns_duplicates(self):
+ """ ND Duplicates"""
+
+ #
+ # Generate some hosts on the LAN
+ #
+ self.pg1.generate_remote_hosts(3)
+
+ #
+ # Add host 1 on pg1 and pg2
+ #
+ ns_pg1 = VppNeighbor(self,
+ self.pg1.sw_if_index,
+ self.pg1.remote_hosts[1].mac,
+ self.pg1.remote_hosts[1].ip6,
+ af=AF_INET6)
+ ns_pg1.add_vpp_config()
+ ns_pg2 = VppNeighbor(self,
+ self.pg2.sw_if_index,
+ self.pg2.remote_mac,
+ self.pg1.remote_hosts[1].ip6,
+ af=AF_INET6)
+ ns_pg2.add_vpp_config()
+
+ #
+ # IP packet destined for pg1 remote host arrives on pg1 again.
+ #
+ p = (Ether(dst=self.pg0.local_mac,
+ src=self.pg0.remote_mac) /
+ IPv6(src=self.pg0.remote_ip6,
+ dst=self.pg1.remote_hosts[1].ip6) /
+ UDP(sport=1234, dport=1234) /
+ Raw())
+
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ rx1 = self.pg1.get_capture(1)
+
+ self.verify_ip(rx1[0],
+ self.pg1.local_mac,
+ self.pg1.remote_hosts[1].mac,
+ self.pg0.remote_ip6,
+ self.pg1.remote_hosts[1].ip6)
+
+ #
+ # remove the duplicate on pg1
+ # packet stream shoud generate NSs out of pg1
+ #
+ ns_pg1.remove_vpp_config()
+
+ self.send_and_expect_ns(self.pg0, self.pg1,
+ p, self.pg1.remote_hosts[1].ip6)
+
+ #
+ # Add it back
+ #
+ ns_pg1.add_vpp_config()
+
+ self.pg0.add_stream(p)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ rx1 = self.pg1.get_capture(1)
+
+ self.verify_ip(rx1[0],
+ self.pg1.local_mac,
+ self.pg1.remote_hosts[1].mac,
+ self.pg0.remote_ip6,
+ self.pg1.remote_hosts[1].ip6)
+
def validate_ra(self, intf, rx, dst_ip=None, mtu=9000, pi_opt=None):
if not dst_ip:
dst_ip = intf.remote_ip6
self.pg0.ip6_ra_config(no=1, suppress=1, send_unicast=0)
+class TestIPv6RD(TestIPv6ND):
+ """ IPv6 Router Discovery Test Case """
+
+ @classmethod
+ def setUpClass(cls):
+ super(TestIPv6RD, cls).setUpClass()
+
+ def setUp(self):
+ super(TestIPv6RD, self).setUp()
+
+ # create 2 pg interfaces
+ self.create_pg_interfaces(range(2))
+
+ self.interfaces = list(self.pg_interfaces)
+
+ # setup all interfaces
+ for i in self.interfaces:
+ i.admin_up()
+ i.config_ip6()
+
+ def tearDown(self):
+ super(TestIPv6RD, self).tearDown()
+
+ def test_rd_send_router_solicitation(self):
+ """ Verify router solicitation packets """
+
+ count = 2
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ self.vapi.ip6nd_send_router_solicitation(self.pg1.sw_if_index,
+ mrc=count)
+ rx_list = self.pg1.get_capture(count, timeout=3)
+ self.assertEqual(len(rx_list), count)
+ for packet in rx_list:
+ self.assertTrue(packet.haslayer(IPv6))
+ self.assertTrue(packet[IPv6].haslayer(ICMPv6ND_RS))
+ dst = ip6_normalize(packet[IPv6].dst)
+ dst2 = ip6_normalize("ff02::2")
+ self.assert_equal(dst, dst2)
+ src = ip6_normalize(packet[IPv6].src)
+ src2 = ip6_normalize(self.pg1.local_ip6_ll)
+ self.assert_equal(src, src2)
+ self.assertTrue(packet[ICMPv6ND_RS].haslayer(ICMPv6NDOptSrcLLAddr))
+ self.assert_equal(packet[ICMPv6NDOptSrcLLAddr].lladdr,
+ self.pg1.local_mac)
+
+ def verify_prefix_info(self, reported_prefix, prefix_option):
+ prefix = socket.inet_pton(socket.AF_INET6,
+ prefix_option.getfieldval("prefix"))
+ self.assert_equal(reported_prefix.dst_address, prefix)
+ self.assert_equal(reported_prefix.dst_address_length,
+ prefix_option.getfieldval("prefixlen"))
+ L = prefix_option.getfieldval("L")
+ A = prefix_option.getfieldval("A")
+ option_flags = (L << 7) | (A << 6)
+ self.assert_equal(reported_prefix.flags, option_flags)
+ self.assert_equal(reported_prefix.valid_time,
+ prefix_option.getfieldval("validlifetime"))
+ self.assert_equal(reported_prefix.preferred_time,
+ prefix_option.getfieldval("preferredlifetime"))
+
+ def test_rd_receive_router_advertisement(self):
+ """ Verify events triggered by received RA packets """
+
+ self.vapi.want_ip6_ra_events()
+
+ prefix_info_1 = ICMPv6NDOptPrefixInfo(
+ prefix="1::2",
+ prefixlen=50,
+ validlifetime=200,
+ preferredlifetime=500,
+ L=1,
+ A=1,
+ )
+
+ prefix_info_2 = ICMPv6NDOptPrefixInfo(
+ prefix="7::4",
+ prefixlen=20,
+ validlifetime=70,
+ preferredlifetime=1000,
+ L=1,
+ A=0,
+ )
+
+ p = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
+ IPv6(dst=self.pg1.local_ip6_ll,
+ src=mk_ll_addr(self.pg1.remote_mac)) /
+ ICMPv6ND_RA() /
+ prefix_info_1 /
+ prefix_info_2)
+ self.pg1.add_stream([p])
+ self.pg_start()
+
+ ev = self.vapi.wait_for_event(10, "ip6_ra_event")
+
+ self.assert_equal(ev.current_hop_limit, 0)
+ self.assert_equal(ev.flags, 8)
+ self.assert_equal(ev.router_lifetime_in_sec, 1800)
+ self.assert_equal(ev.neighbor_reachable_time_in_msec, 0)
+ self.assert_equal(
+ ev.time_in_msec_between_retransmitted_neighbor_solicitations, 0)
+
+ self.assert_equal(ev.n_prefixes, 2)
+
+ self.verify_prefix_info(ev.prefixes[0], prefix_info_1)
+ self.verify_prefix_info(ev.prefixes[1], prefix_info_2)
+
+
class IPv6NDProxyTest(TestIPv6ND):
""" IPv6 ND ProxyTest Case """
i.unconfig_ip4()
i.admin_down()
- def send_and_assert_no_replies(self, intf, pkts, remark):
- intf.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- for i in self.pg_interfaces:
- i.get_capture(0)
- i.assert_nothing_captured(remark=remark)
-
def test_ip_disabled(self):
""" IP Disabled """
self.create_pg_interfaces(range(5))
+ mpls_tbl = VppMplsTable(self, 0)
+ mpls_tbl.add_vpp_config()
+
for i in self.pg_interfaces:
i.admin_up()
i.config_ip6()
i.enable_mpls()
def tearDown(self):
- super(TestIP6LoadBalance, self).tearDown()
for i in self.pg_interfaces:
i.unconfig_ip6()
i.admin_down()
i.disable_mpls()
+ super(TestIP6LoadBalance, self).tearDown()
def send_and_expect_load_balancing(self, input, pkts, outputs):
+ self.vapi.cli("clear trace")
input.add_stream(pkts)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
self.assertNotEqual(0, len(rx))
def send_and_expect_one_itf(self, input, pkts, itf):
+ self.vapi.cli("clear trace")
input.add_stream(pkts)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
route_3000_1 = VppIpRoute(self, "3000::1", 128,
[VppRoutePath(self.pg1.remote_ip6,
self.pg1.sw_if_index,
- is_ip6=1),
+ proto=DpoProto.DPO_PROTO_IP6),
VppRoutePath(self.pg2.remote_ip6,
self.pg2.sw_if_index,
- is_ip6=1)],
+ proto=DpoProto.DPO_PROTO_IP6)],
is_ip6=1)
route_3000_1.add_vpp_config()
[VppRoutePath(self.pg1.remote_ip6,
self.pg1.sw_if_index,
labels=[67],
- is_ip6=1),
+ proto=DpoProto.DPO_PROTO_IP6),
VppRoutePath(self.pg2.remote_ip6,
self.pg2.sw_if_index,
labels=[67],
- is_ip6=1)])
+ proto=DpoProto.DPO_PROTO_IP6)])
route_67.add_vpp_config()
#
route_3000_2 = VppIpRoute(self, "3000::2", 128,
[VppRoutePath(self.pg3.remote_ip6,
self.pg3.sw_if_index,
- is_ip6=1),
+ proto=DpoProto.DPO_PROTO_IP6),
VppRoutePath(self.pg4.remote_ip6,
self.pg4.sw_if_index,
- is_ip6=1)],
+ proto=DpoProto.DPO_PROTO_IP6)],
is_ip6=1)
route_3000_2.add_vpp_config()
route_4000_1 = VppIpRoute(self, "4000::1", 128,
[VppRoutePath("3000::1",
0xffffffff,
- is_ip6=1),
+ proto=DpoProto.DPO_PROTO_IP6),
VppRoutePath("3000::2",
0xffffffff,
- is_ip6=1)],
+ proto=DpoProto.DPO_PROTO_IP6)],
is_ip6=1)
route_4000_1.add_vpp_config()
[self.pg1, self.pg2,
self.pg3, self.pg4])
+ #
+ # Recursive prefixes
+ # - testing that 2 stages of load-balancing no choices
+ #
+ port_pkts = []
+
+ for ii in range(257):
+ port_pkts.append((Ether(src=self.pg0.remote_mac,
+ dst=self.pg0.local_mac) /
+ IPv6(dst="6000::1", src="6000:1::1") /
+ UDP(sport=1234, dport=1234 + ii) /
+ Raw('\xa5' * 100)))
+
+ route_5000_2 = VppIpRoute(self, "5000::2", 128,
+ [VppRoutePath(self.pg3.remote_ip6,
+ self.pg3.sw_if_index,
+ proto=DpoProto.DPO_PROTO_IP6)],
+ is_ip6=1)
+ route_5000_2.add_vpp_config()
+
+ route_6000_1 = VppIpRoute(self, "6000::1", 128,
+ [VppRoutePath("5000::2",
+ 0xffffffff,
+ proto=DpoProto.DPO_PROTO_IP6)],
+ is_ip6=1)
+ route_6000_1.add_vpp_config()
+
+ #
+ # inject the packet on pg0 - expect load-balancing across all 4 paths
+ #
+ self.vapi.cli("clear trace")
+ self.send_and_expect_one_itf(self.pg0, port_pkts, self.pg3)
+
+
+class TestIP6Punt(VppTestCase):
+ """ IPv6 Punt Police/Redirect """
+
+ def setUp(self):
+ super(TestIP6Punt, self).setUp()
+
+ self.create_pg_interfaces(range(2))
+
+ for i in self.pg_interfaces:
+ i.admin_up()
+ i.config_ip6()
+ i.resolve_ndp()
+
+ def tearDown(self):
+ super(TestIP6Punt, self).tearDown()
+ for i in self.pg_interfaces:
+ i.unconfig_ip6()
+ i.admin_down()
+
+ def test_ip_punt(self):
+ """ IP6 punt police and redirect """
+
+ p = (Ether(src=self.pg0.remote_mac,
+ dst=self.pg0.local_mac) /
+ IPv6(src=self.pg0.remote_ip6, dst=self.pg0.local_ip6) /
+ TCP(sport=1234, dport=1234) /
+ Raw('\xa5' * 100))
+
+ pkts = p * 1025
+
+ #
+ # Configure a punt redirect via pg1.
+ #
+ nh_addr = inet_pton(AF_INET6,
+ self.pg1.remote_ip6)
+ self.vapi.ip_punt_redirect(self.pg0.sw_if_index,
+ self.pg1.sw_if_index,
+ nh_addr,
+ is_ip6=1)
+
+ self.send_and_expect(self.pg0, pkts, self.pg1)
+
+ #
+ # add a policer
+ #
+ policer = self.vapi.policer_add_del("ip6-punt", 400, 0, 10, 0,
+ rate_type=1)
+ self.vapi.ip_punt_police(policer.policer_index, is_ip6=1)
+
+ self.vapi.cli("clear trace")
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ #
+ # the number of packet recieved should be greater than 0,
+ # but not equal to the number sent, since some were policed
+ #
+ rx = self.pg1._get_capture(1)
+ self.assertTrue(len(rx) > 0)
+ self.assertTrue(len(rx) < len(pkts))
+
+ #
+ # remove the poilcer. back to full rx
+ #
+ self.vapi.ip_punt_police(policer.policer_index, is_add=0, is_ip6=1)
+ self.vapi.policer_add_del("ip6-punt", 400, 0, 10, 0,
+ rate_type=1, is_add=0)
+ self.send_and_expect(self.pg0, pkts, self.pg1)
+
+ #
+ # remove the redirect. expect full drop.
+ #
+ self.vapi.ip_punt_redirect(self.pg0.sw_if_index,
+ self.pg1.sw_if_index,
+ nh_addr,
+ is_add=0,
+ is_ip6=1)
+ self.send_and_assert_no_replies(self.pg0, pkts,
+ "IP no punt config")
+
+ #
+ # Add a redirect that is not input port selective
+ #
+ self.vapi.ip_punt_redirect(0xffffffff,
+ self.pg1.sw_if_index,
+ nh_addr,
+ is_ip6=1)
+ self.send_and_expect(self.pg0, pkts, self.pg1)
+
+ self.vapi.ip_punt_redirect(0xffffffff,
+ self.pg1.sw_if_index,
+ nh_addr,
+ is_add=0,
+ is_ip6=1)
+
+
+class TestIP6Input(VppTestCase):
+ """ IPv6 Input Exceptions """
+
+ def setUp(self):
+ super(TestIP6Input, self).setUp()
+
+ self.create_pg_interfaces(range(2))
+
+ for i in self.pg_interfaces:
+ i.admin_up()
+ i.config_ip6()
+ i.resolve_ndp()
+
+ def tearDown(self):
+ super(TestIP6Input, self).tearDown()
+ for i in self.pg_interfaces:
+ i.unconfig_ip6()
+ i.admin_down()
+
+ def test_ip_input(self):
+ """ IP6 Input Exceptions """
+
+ #
+ # bad version - this is dropped
+ #
+ p_version = (Ether(src=self.pg0.remote_mac,
+ dst=self.pg0.local_mac) /
+ IPv6(src=self.pg0.remote_ip6,
+ dst=self.pg1.remote_ip6,
+ version=3) /
+ UDP(sport=1234, dport=1234) /
+ Raw('\xa5' * 100))
+
+ self.send_and_assert_no_replies(self.pg0, p_version * 65,
+ "funky version")
+
+ #
+ # hop limit - IMCP replies
+ #
+ p_version = (Ether(src=self.pg0.remote_mac,
+ dst=self.pg0.local_mac) /
+ IPv6(src=self.pg0.remote_ip6,
+ dst=self.pg1.remote_ip6,
+ hlim=1) /
+ UDP(sport=1234, dport=1234) /
+ Raw('\xa5' * 100))
+
+ rx = self.send_and_expect(self.pg0, p_version * 65, self.pg0)
+ rx = rx[0]
+ icmp = rx[ICMPv6TimeExceeded]
+ self.assertEqual(icmp.type, 3)
+ # 0: "hop limit exceeded in transit",
+ self.assertEqual(icmp.code, 0)
+
if __name__ == '__main__':
unittest.main(testRunner=VppTestRunner)
Code Review / vpp.git / blobdiff