#!/usr/bin/env python
import unittest
-import socket
+from socket import AF_INET6
from framework import VppTestCase, VppTestRunner
from vpp_sub_interface import VppSubInterface, VppDot1QSubint
from vpp_pg_interface import is_ipv6_misc
+from vpp_neighbor import find_nbr
from scapy.packet import Raw
from scapy.layers.l2 import Ether, Dot1Q
from scapy.layers.inet6 import IPv6, UDP, ICMPv6ND_NS, ICMPv6ND_RS, \
ICMPv6ND_RA, ICMPv6NDOptSrcLLAddr, getmacbyip6, ICMPv6MRD_Solicitation, \
- ICMPv6NDOptMTU, ICMPv6NDOptSrcLLAddr, ICMPv6NDOptPrefixInfo
+ ICMPv6NDOptMTU, ICMPv6NDOptSrcLLAddr, ICMPv6NDOptPrefixInfo, \
+ ICMPv6ND_NA, ICMPv6NDOptDstLLAddr
+
from util import ppp
from scapy.utils6 import in6_getnsma, in6_getnsmac, in6_ptop, in6_islladdr, \
in6_mactoifaceid, in6_ismaddr
return addr
-class TestIPv6(VppTestCase):
+class TestIPv6ND(VppTestCase):
+ def validate_ra(self, intf, rx, dst_ip=None):
+ if not dst_ip:
+ dst_ip = intf.remote_ip6
+
+ # unicasted packets must come to the unicast mac
+ self.assertEqual(rx[Ether].dst, intf.remote_mac)
+
+ # and from the router's MAC
+ self.assertEqual(rx[Ether].src, intf.local_mac)
+
+ # the rx'd RA should be addressed to the sender's source
+ self.assertTrue(rx.haslayer(ICMPv6ND_RA))
+ self.assertEqual(in6_ptop(rx[IPv6].dst),
+ in6_ptop(dst_ip))
+
+ # and come from the router's link local
+ self.assertTrue(in6_islladdr(rx[IPv6].src))
+ self.assertEqual(in6_ptop(rx[IPv6].src),
+ in6_ptop(mk_ll_addr(intf.local_mac)))
+
+ def validate_na(self, intf, rx, dst_ip=None, tgt_ip=None):
+ if not dst_ip:
+ dst_ip = intf.remote_ip6
+ if not tgt_ip:
+ dst_ip = intf.local_ip6
+
+ # unicasted packets must come to the unicast mac
+ self.assertEqual(rx[Ether].dst, intf.remote_mac)
+
+ # and from the router's MAC
+ self.assertEqual(rx[Ether].src, intf.local_mac)
+
+ # the rx'd NA should be addressed to the sender's source
+ self.assertTrue(rx.haslayer(ICMPv6ND_NA))
+ self.assertEqual(in6_ptop(rx[IPv6].dst),
+ in6_ptop(dst_ip))
+
+ # and come from the target address
+ self.assertEqual(in6_ptop(rx[IPv6].src), in6_ptop(tgt_ip))
+
+ # Dest link-layer options should have the router's MAC
+ dll = rx[ICMPv6NDOptDstLLAddr]
+ self.assertEqual(dll.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)
+ self.pg0.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ rx = intf.get_capture(1, filter_out_fn=filter_out_fn)
+
+ self.assertEqual(len(rx), 1)
+ rx = rx[0]
+ self.validate_ra(intf, rx, dst_ip)
+
+ def send_and_assert_no_replies(self, intf, pkts, remark):
+ intf.add_stream(pkts)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ intf.assert_nothing_captured(remark=remark)
+
+
+class TestIPv6(TestIPv6ND):
""" IPv6 Test Case """
@classmethod
n_int = len(self.interfaces)
percent = 0
counter = 0.0
- dest_addr = socket.inet_pton(socket.AF_INET6, "fd02::1")
+ dest_addr = inet_pton(AF_INET6, "fd02::1")
dest_addr_len = 128
for i in self.interfaces:
next_hop_address = i.local_ip6n
pkts = i.parent.get_capture()
self.verify_capture(i, pkts)
- def send_and_assert_no_replies(self, intf, pkts, remark):
- intf.add_stream(pkts)
- self.pg_enable_capture(self.pg_interfaces)
- self.pg_start()
- intf.assert_nothing_captured(remark=remark)
-
def test_ns(self):
""" IPv6 Neighbour Solicitation Exceptions
#
# An NS from a non link source address
#
- nsma = in6_getnsma(inet_pton(socket.AF_INET6, self.pg0.local_ip6))
- d = inet_ntop(socket.AF_INET6, nsma)
+ nsma = in6_getnsma(inet_pton(AF_INET6, self.pg0.local_ip6))
+ d = inet_ntop(AF_INET6, nsma)
p = (Ether(dst=in6_getnsmac(nsma)) /
IPv6(dst=d, src="2002::2") /
# not a member of FAILS
#
if 0:
- nsma = in6_getnsma(inet_pton(socket.AF_INET6, "fd::ffff"))
- d = inet_ntop(socket.AF_INET6, nsma)
+ nsma = in6_getnsma(inet_pton(AF_INET6, "fd::ffff"))
+ d = inet_ntop(AF_INET6, nsma)
p = (Ether(dst=in6_getnsmac(nsma)) /
IPv6(dst=d, src=self.pg0.remote_ip6) /
#
# An NS whose target address is one the router does not own
#
- nsma = in6_getnsma(inet_pton(socket.AF_INET6, self.pg0.local_ip6))
- d = inet_ntop(socket.AF_INET6, nsma)
+ nsma = in6_getnsma(inet_pton(AF_INET6, self.pg0.local_ip6))
+ d = inet_ntop(AF_INET6, nsma)
p = (Ether(dst=in6_getnsmac(nsma)) /
IPv6(dst=d, src=self.pg0.remote_ip6) /
# Send the RS multicast
#
self.pg0.ip6_ra_config(send_unicast=1)
- dmac = in6_getnsmac(inet_pton(socket.AF_INET6, "ff02::2"))
+ dmac = in6_getnsmac(inet_pton(AF_INET6, "ff02::2"))
ll = mk_ll_addr(self.pg0.remote_mac)
p = (Ether(dst=dmac, src=self.pg0.remote_mac) /
IPv6(dst="ff02::2", src=ll) /
#
self.pg0.ip6_ra_config(no=1, suppress=1, send_unicast=0)
+
+class IPv6NDProxyTest(TestIPv6ND):
+ """ IPv6 ND ProxyTest Case """
+
+ def setUp(self):
+ super(IPv6NDProxyTest, self).setUp()
+
+ # create 3 pg interfaces
+ self.create_pg_interfaces(range(3))
+
+ # pg0 is the master interface, with the configured subnet
+ self.pg0.admin_up()
+ self.pg0.config_ip6()
+ self.pg0.resolve_ndp()
+
+ self.pg1.ip6_enable()
+ self.pg2.ip6_enable()
+
+ def tearDown(self):
+ super(IPv6NDProxyTest, self).tearDown()
+
+ def test_nd_proxy(self):
+ """ IPv6 Proxy ND """
+
+ #
+ # Generate some hosts in the subnet that we are proxying
+ #
+ self.pg0.generate_remote_hosts(8)
+
+ nsma = in6_getnsma(inet_pton(AF_INET6, self.pg0.local_ip6))
+ d = inet_ntop(AF_INET6, nsma)
+
+ #
+ # Send an NS for one of those remote hosts on one of the proxy links
+ # expect no response since it's from an address that is not
+ # on the link that has the prefix configured
+ #
+ ns_pg1 = (Ether(dst=in6_getnsmac(nsma), src=self.pg1.remote_mac) /
+ IPv6(dst=d, src=self.pg0._remote_hosts[2].ip6) /
+ ICMPv6ND_NS(tgt=self.pg0.local_ip6) /
+ ICMPv6NDOptSrcLLAddr(lladdr=self.pg0._remote_hosts[2].mac))
+
+ self.send_and_assert_no_replies(self.pg1, ns_pg1, "Off link NS")
+
+ #
+ # Add proxy support for the host
+ #
+ self.vapi.ip6_nd_proxy(
+ inet_pton(AF_INET6, self.pg0._remote_hosts[2].ip6),
+ self.pg1.sw_if_index)
+
+ #
+ # try that NS again. this time we expect an NA back
+ #
+ self.pg1.add_stream(ns_pg1)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ rx = self.pg1.get_capture(1)
+
+ self.validate_na(self.pg1, rx[0],
+ dst_ip=self.pg0._remote_hosts[2].ip6,
+ tgt_ip=self.pg0.local_ip6)
+
+ #
+ # ... and that we have an entry in the ND cache
+ #
+ self.assertTrue(find_nbr(self,
+ self.pg1.sw_if_index,
+ self.pg0._remote_hosts[2].ip6,
+ inet=AF_INET6))
+
+ #
+ # ... and we can route traffic to it
+ #
+ t = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
+ IPv6(dst=self.pg0._remote_hosts[2].ip6,
+ src=self.pg0.remote_ip6) /
+ UDP(sport=10000, dport=20000) /
+ Raw('\xa5' * 100))
+
+ self.pg0.add_stream(t)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ rx = self.pg1.get_capture(1)
+ rx = rx[0]
+
+ self.assertEqual(rx[Ether].dst, self.pg0._remote_hosts[2].mac)
+ self.assertEqual(rx[Ether].src, self.pg1.local_mac)
+
+ self.assertEqual(rx[IPv6].src, t[IPv6].src)
+ self.assertEqual(rx[IPv6].dst, t[IPv6].dst)
+
+ #
+ # Test we proxy for the host on the main interface
+ #
+ ns_pg0 = (Ether(dst=in6_getnsmac(nsma), src=self.pg0.remote_mac) /
+ IPv6(dst=d, src=self.pg0.remote_ip6) /
+ ICMPv6ND_NS(tgt=self.pg0._remote_hosts[2].ip6) /
+ ICMPv6NDOptSrcLLAddr(lladdr=self.pg0.remote_mac))
+
+ self.pg0.add_stream(ns_pg0)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ rx = self.pg0.get_capture(1)
+
+ self.validate_na(self.pg0, rx[0],
+ tgt_ip=self.pg0._remote_hosts[2].ip6,
+ dst_ip=self.pg0.remote_ip6)
+
+ #
+ # Setup and resolve proxy for another host on another interface
+ #
+ ns_pg2 = (Ether(dst=in6_getnsmac(nsma), src=self.pg2.remote_mac) /
+ IPv6(dst=d, src=self.pg0._remote_hosts[3].ip6) /
+ ICMPv6ND_NS(tgt=self.pg0.local_ip6) /
+ ICMPv6NDOptSrcLLAddr(lladdr=self.pg0._remote_hosts[2].mac))
+
+ self.vapi.ip6_nd_proxy(
+ inet_pton(AF_INET6, self.pg0._remote_hosts[3].ip6),
+ self.pg2.sw_if_index)
+
+ self.pg2.add_stream(ns_pg2)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ rx = self.pg2.get_capture(1)
+
+ self.validate_na(self.pg2, rx[0],
+ dst_ip=self.pg0._remote_hosts[3].ip6,
+ tgt_ip=self.pg0.local_ip6)
+
+ self.assertTrue(find_nbr(self,
+ self.pg2.sw_if_index,
+ self.pg0._remote_hosts[3].ip6,
+ inet=AF_INET6))
+
+ #
+ # hosts can communicate. pg2->pg1
+ #
+ t2 = (Ether(dst=self.pg2.local_mac,
+ src=self.pg0.remote_hosts[3].mac) /
+ IPv6(dst=self.pg0._remote_hosts[2].ip6,
+ src=self.pg0._remote_hosts[3].ip6) /
+ UDP(sport=10000, dport=20000) /
+ Raw('\xa5' * 100))
+
+ self.pg2.add_stream(t2)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+ rx = self.pg1.get_capture(1)
+ rx = rx[0]
+
+ self.assertEqual(rx[Ether].dst, self.pg0._remote_hosts[2].mac)
+ self.assertEqual(rx[Ether].src, self.pg1.local_mac)
+
+ self.assertEqual(rx[IPv6].src, t2[IPv6].src)
+ self.assertEqual(rx[IPv6].dst, t2[IPv6].dst)
+
+ #
+ # remove the proxy configs
+ #
+ self.vapi.ip6_nd_proxy(
+ inet_pton(AF_INET6, self.pg0._remote_hosts[2].ip6),
+ self.pg1.sw_if_index,
+ is_del=1)
+ self.vapi.ip6_nd_proxy(
+ inet_pton(AF_INET6, self.pg0._remote_hosts[3].ip6),
+ self.pg2.sw_if_index,
+ is_del=1)
+
+ self.assertFalse(find_nbr(self,
+ self.pg2.sw_if_index,
+ self.pg0._remote_hosts[3].ip6,
+ inet=AF_INET6))
+ self.assertFalse(find_nbr(self,
+ self.pg1.sw_if_index,
+ self.pg0._remote_hosts[2].ip6,
+ inet=AF_INET6))
+
+ #
+ # no longer proxy-ing...
+ #
+ self.send_and_assert_no_replies(self.pg0, ns_pg0, "Proxy unconfigured")
+ self.send_and_assert_no_replies(self.pg1, ns_pg1, "Proxy unconfigured")
+ self.send_and_assert_no_replies(self.pg2, ns_pg2, "Proxy unconfigured")
+
+ #
+ # no longer forwarding. traffic generates NS out of the glean/main
+ # interface
+ #
+ self.pg2.add_stream(t2)
+ self.pg_enable_capture(self.pg_interfaces)
+ self.pg_start()
+
+ rx = self.pg0.get_capture(1)
+
+ self.assertTrue(rx[0].haslayer(ICMPv6ND_NS))
+
+
if __name__ == '__main__':
unittest.main(testRunner=VppTestRunner)
Code Review / vpp.git / blobdiff