1 from scapy.layers.dhcp6 import DHCP6_Advertise, DHCP6OptClientId, \
2 DHCP6OptStatusCode, DHCP6OptPref, DHCP6OptIA_PD, DHCP6OptIAPrefix, \
3 DHCP6OptServerId, DHCP6_Solicit, DHCP6_Reply, DHCP6_Request, DHCP6_Renew, \
4 DHCP6_Rebind, DUID_LL, DHCP6_Release, DHCP6OptElapsedTime
5 from scapy.layers.inet6 import IPv6, Ether, UDP
6 from scapy.utils6 import in6_mactoifaceid
7 from scapy.utils import inet_ntop, inet_pton
8 from socket import AF_INET6
9 from framework import VppTestCase
13 def ip6_normalize(ip6):
14 return inet_ntop(AF_INET6, inet_pton(AF_INET6, ip6))
18 euid = in6_mactoifaceid(mac)
19 addr = "fe80::" + euid
23 class TestDHCPv6PD(VppTestCase):
24 """ DHCPv6 PD Data Plane Test Case """
28 super(TestDHCPv6PD, cls).setUpClass()
31 super(TestDHCPv6PD, self).setUp()
33 self.create_pg_interfaces(range(1))
34 self.interfaces = list(self.pg_interfaces)
35 for i in self.interfaces:
39 self.server_duid = DUID_LL(lladdr=self.pg0.remote_mac)
42 for i in self.interfaces:
45 super(TestDHCPv6PD, self).tearDown()
47 def test_dhcp_send_solicit_receive_advertise(self):
48 """ Verify DHCPv6 PD Solicit packet and received Advertise envent """
50 self.vapi.dhcp6_clients_enable_disable()
52 self.pg_enable_capture(self.pg_interfaces)
54 prefix_bin = '\00\01\00\02\00\03' + '\00' * 10
55 prefix = {'prefix': prefix_bin,
59 self.vapi.dhcp6_pd_send_client_message(1, self.pg0.sw_if_index,
60 T1=20, T2=40, prefixes=[prefix])
61 rx_list = self.pg0.get_capture(1)
62 self.assertEqual(len(rx_list), 1)
65 self.assertTrue(packet.haslayer(IPv6))
66 self.assertTrue(packet[IPv6].haslayer(DHCP6_Solicit))
68 client_duid = packet[DHCP6OptClientId].duid
69 trid = packet[DHCP6_Solicit].trid
71 dst = ip6_normalize(packet[IPv6].dst)
72 dst2 = ip6_normalize("ff02::1:2")
73 self.assert_equal(dst, dst2)
74 src = ip6_normalize(packet[IPv6].src)
75 src2 = ip6_normalize(self.pg0.local_ip6_ll)
76 self.assert_equal(src, src2)
77 ia_pd = packet[DHCP6OptIA_PD]
78 self.assert_equal(ia_pd.T1, 20)
79 self.assert_equal(ia_pd.T2, 40)
80 self.assert_equal(len(ia_pd.iapdopt), 1)
81 prefix = ia_pd.iapdopt[0]
82 self.assert_equal(prefix.prefix, '1:2:3::')
83 self.assert_equal(prefix.plen, 50)
84 self.assert_equal(prefix.preflft, 60)
85 self.assert_equal(prefix.validlft, 120)
87 self.vapi.want_dhcp6_pd_reply_events()
89 ia_pd_opts = DHCP6OptIAPrefix(prefix='7:8::', plen=56, preflft=60,
91 p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
92 IPv6(src=mk_ll_addr(self.pg0.remote_mac),
93 dst=self.pg0.local_ip6_ll) /
94 UDP(sport=547, dport=546) /
95 DHCP6_Advertise(trid=trid) /
96 DHCP6OptServerId(duid=self.server_duid) /
97 DHCP6OptClientId(duid=client_duid) /
98 DHCP6OptPref(prefval=7) /
99 DHCP6OptStatusCode(statuscode=1) /
100 DHCP6OptIA_PD(iaid=1, T1=20, T2=40, iapdopt=ia_pd_opts)
102 self.pg0.add_stream([p])
105 ev = self.vapi.wait_for_event(1, "dhcp6_pd_reply_event")
107 self.assert_equal(ev.preference, 7)
108 self.assert_equal(ev.status_code, 1)
109 self.assert_equal(ev.T1, 20)
110 self.assert_equal(ev.T2, 40)
112 reported_prefix = ev.prefixes[0]
113 prefix = inet_pton(AF_INET6, ia_pd_opts.getfieldval("prefix"))
114 self.assert_equal(reported_prefix.prefix, prefix)
115 self.assert_equal(reported_prefix.prefix_length,
116 ia_pd_opts.getfieldval("plen"))
117 self.assert_equal(reported_prefix.preferred_time,
118 ia_pd_opts.getfieldval("preflft"))
119 self.assert_equal(reported_prefix.valid_time,
120 ia_pd_opts.getfieldval("validlft"))
123 class TestDHCPv6PDControlPlane(VppTestCase):
124 """ DHCPv6 PD Control Plane Test Case """
128 super(TestDHCPv6PDControlPlane, cls).setUpClass()
131 super(TestDHCPv6PDControlPlane, self).setUp()
133 self.create_pg_interfaces(range(2))
134 self.interfaces = list(self.pg_interfaces)
135 for i in self.interfaces:
138 self.server_duid = DUID_LL(lladdr=self.pg0.remote_mac)
139 self.client_duid = None
143 fib = self.vapi.ip6_fib_dump()
144 self.initial_addresses = set(self.get_interface_addresses(fib,
147 self.pg_enable_capture(self.pg_interfaces)
150 self.prefix_group = 'my-pd-prefix-group'
152 self.vapi.dhcp6_pd_client_enable_disable(
153 self.pg0.sw_if_index,
154 prefix_group=self.prefix_group)
157 self.vapi.dhcp6_pd_client_enable_disable(self.pg0.sw_if_index,
160 for i in self.interfaces:
163 super(TestDHCPv6PDControlPlane, self).tearDown()
166 def get_interface_addresses(fib, pg):
169 if entry.address_length == 128:
171 if path.sw_if_index == pg.sw_if_index:
172 lst.append(entry.address)
175 def get_addresses(self):
176 fib = self.vapi.ip6_fib_dump()
177 addresses = set(self.get_interface_addresses(fib, self.pg1))
178 return addresses.difference(self.initial_addresses)
180 def validate_duid_ll(self, duid):
183 def validate_packet(self, packet, msg_type, is_resend=False):
185 self.assertTrue(packet.haslayer(msg_type))
186 client_duid = packet[DHCP6OptClientId].duid
187 if self.client_duid is None:
188 self.client_duid = client_duid
189 self.validate_duid_ll(client_duid)
191 self.assertEqual(self.client_duid, client_duid)
192 if msg_type != DHCP6_Solicit and msg_type != DHCP6_Rebind:
193 server_duid = packet[DHCP6OptServerId].duid
194 self.assertEqual(server_duid, self.server_duid)
196 self.assertEqual(self.trid, packet[msg_type].trid)
198 self.trid = packet[msg_type].trid
201 self.assertEqual(ip.dst, 'ff02::1:2')
202 self.assertEqual(udp.sport, 546)
203 self.assertEqual(udp.dport, 547)
204 dhcpv6 = packet[msg_type]
205 elapsed_time = dhcpv6[DHCP6OptElapsedTime]
207 self.assertNotEqual(elapsed_time.elapsedtime, 0)
209 self.assertEqual(elapsed_time.elapsedtime, 0)
214 def wait_for_packet(self, msg_type, timeout=None, is_resend=False):
217 rx_list = self.pg0.get_capture(1, timeout=timeout)
219 self.validate_packet(packet, msg_type, is_resend=is_resend)
221 def wait_for_solicit(self, timeout=None, is_resend=False):
222 self.wait_for_packet(DHCP6_Solicit, timeout, is_resend=is_resend)
224 def wait_for_request(self, timeout=None, is_resend=False):
225 self.wait_for_packet(DHCP6_Request, timeout, is_resend=is_resend)
227 def wait_for_renew(self, timeout=None, is_resend=False):
228 self.wait_for_packet(DHCP6_Renew, timeout, is_resend=is_resend)
230 def wait_for_rebind(self, timeout=None, is_resend=False):
231 self.wait_for_packet(DHCP6_Rebind, timeout, is_resend=is_resend)
233 def wait_for_release(self, timeout=None, is_resend=False):
234 self.wait_for_packet(DHCP6_Release, timeout, is_resend=is_resend)
236 def send_packet(self, msg_type, t1=None, t2=None, iapdopt=None):
242 opt_ia_pd = DHCP6OptIA_PD(iaid=1, T1=t1, T2=t2)
244 opt_ia_pd = DHCP6OptIA_PD(iaid=1, T1=t1, T2=t2, iapdopt=iapdopt)
245 p = (Ether(src=self.pg0.remote_mac, dst=self.pg0.local_mac) /
246 IPv6(src=mk_ll_addr(self.pg0.remote_mac),
247 dst=self.pg0.local_ip6_ll) /
248 UDP(sport=547, dport=546) /
249 msg_type(trid=self.trid) /
250 DHCP6OptServerId(duid=self.server_duid) /
251 DHCP6OptClientId(duid=self.client_duid) /
254 self.pg0.add_stream([p])
255 self.pg_enable_capture(self.pg_interfaces)
258 def send_advertise(self, t1=None, t2=None, iapdopt=None):
259 self.send_packet(DHCP6_Advertise, t1, t2, iapdopt)
261 def send_reply(self, t1=None, t2=None, iapdopt=None):
262 self.send_packet(DHCP6_Reply, t1, t2, iapdopt)
264 def test_T1_and_T2_timeouts(self):
265 """ Test T1 and T2 timeouts """
267 self.wait_for_solicit()
268 self.send_advertise()
269 self.wait_for_request()
274 self.wait_for_renew()
276 self.pg_enable_capture(self.pg_interfaces)
280 self.wait_for_rebind()
282 def test_prefixes(self):
283 """ Test handling of prefixes """
287 address_bin_1 = '\x00' * 6 + '\x00\x02' + '\x00' * 6 + '\x04\x05'
288 address_prefix_length_1 = 60
289 self.vapi.ip6_add_del_address_using_prefix(self.pg1.sw_if_index,
291 address_prefix_length_1,
294 ia_pd_opts = DHCP6OptIAPrefix(prefix='7:8::', plen=56, preflft=2,
297 self.wait_for_solicit()
298 self.send_advertise(t1=20, t2=40, iapdopt=ia_pd_opts)
299 self.wait_for_request()
300 self.send_reply(t1=20, t2=40, iapdopt=ia_pd_opts)
303 # check FIB for new address
304 new_addresses = self.get_addresses()
305 self.assertEqual(len(new_addresses), 1)
306 addr = list(new_addresses)[0]
307 self.assertEqual(inet_ntop(AF_INET6, addr), '7:8:0:2::405')
311 address_bin_2 = '\x00' * 6 + '\x00\x76' + '\x00' * 6 + '\x04\x06'
312 address_prefix_length_2 = 62
313 self.vapi.ip6_add_del_address_using_prefix(self.pg1.sw_if_index,
315 address_prefix_length_2,
320 # check FIB contains 2 addresses
321 fib = self.vapi.ip6_fib_dump()
322 addresses = set(self.get_interface_addresses(fib, self.pg1))
323 new_addresses = addresses.difference(self.initial_addresses)
324 self.assertEqual(len(new_addresses), 2)
325 addr1 = list(new_addresses)[0]
326 addr2 = list(new_addresses)[1]
327 if inet_ntop(AF_INET6, addr1) == '7:8:0:76::406':
328 addr1, addr2 = addr2, addr1
329 self.assertEqual(inet_ntop(AF_INET6, addr1), '7:8:0:2::405')
330 self.assertEqual(inet_ntop(AF_INET6, addr2), '7:8:0:76::406')
334 # check that the addresses are deleted
335 fib = self.vapi.ip6_fib_dump()
336 addresses = set(self.get_interface_addresses(fib, self.pg1))
337 new_addresses = addresses.difference(self.initial_addresses)
338 self.assertEqual(len(new_addresses), 0)
341 if address_bin_1 is not None:
342 self.vapi.ip6_add_del_address_using_prefix(
343 self.pg1.sw_if_index, address_bin_1,
344 address_prefix_length_1, self.prefix_group, is_add=0)
345 if address_bin_2 is not None:
346 self.vapi.ip6_add_del_address_using_prefix(
347 self.pg1.sw_if_index, address_bin_2,
348 address_prefix_length_2, self.prefix_group, is_add=0)
350 def test_sending_client_messages_solicit(self):
351 """ VPP receives messages from DHCPv6 client """
353 self.wait_for_solicit()
354 self.send_packet(DHCP6_Solicit)
355 self.send_packet(DHCP6_Request)
356 self.send_packet(DHCP6_Renew)
357 self.send_packet(DHCP6_Rebind)
359 self.wait_for_solicit(is_resend=True)
361 def test_sending_inapropriate_packets(self):
362 """ Server sends messages with inapropriate message types """
364 self.wait_for_solicit()
366 self.wait_for_solicit(is_resend=True)
367 self.send_advertise()
368 self.wait_for_request()
369 self.send_advertise()
370 self.wait_for_request(is_resend=True)
372 self.wait_for_renew()
374 def test_no_prefix_available_in_advertise(self):
375 """ Advertise message contains NoPrefixAvail status code """
377 self.wait_for_solicit()
378 noavail = DHCP6OptStatusCode(statuscode=6) # NoPrefixAvail
379 self.send_advertise(iapdopt=noavail)
380 self.wait_for_solicit(is_resend=True)
382 def test_preferred_greater_than_valit_lifetime(self):
383 """ Preferred lifetime is greater than valid lifetime """
386 address_bin = '\x00' * 6 + '\x00\x02' + '\x00' * 6 + '\x04\x05'
387 address_prefix_length = 60
388 self.vapi.ip6_add_del_address_using_prefix(self.pg1.sw_if_index,
390 address_prefix_length,
393 self.wait_for_solicit()
394 self.send_advertise()
395 self.wait_for_request()
396 ia_pd_opts = DHCP6OptIAPrefix(prefix='7:8::', plen=56, preflft=4,
398 self.send_reply(iapdopt=ia_pd_opts)
402 # check FIB contains no addresses
403 fib = self.vapi.ip6_fib_dump()
404 addresses = set(self.get_interface_addresses(fib, self.pg1))
405 new_addresses = addresses.difference(self.initial_addresses)
406 self.assertEqual(len(new_addresses), 0)
409 self.vapi.ip6_add_del_address_using_prefix(self.pg1.sw_if_index,
411 address_prefix_length,
415 def test_T1_greater_than_T2(self):
416 """ T1 is greater than T2 """
419 address_bin = '\x00' * 6 + '\x00\x02' + '\x00' * 6 + '\x04\x05'
420 address_prefix_length = 60
421 self.vapi.ip6_add_del_address_using_prefix(self.pg1.sw_if_index,
423 address_prefix_length,
426 self.wait_for_solicit()
427 self.send_advertise()
428 self.wait_for_request()
429 ia_pd_opts = DHCP6OptIAPrefix(prefix='7:8::', plen=56, preflft=4,
431 self.send_reply(t1=80, t2=40, iapdopt=ia_pd_opts)
435 # check FIB contains no addresses
436 fib = self.vapi.ip6_fib_dump()
437 addresses = set(self.get_interface_addresses(fib, self.pg1))
438 new_addresses = addresses.difference(self.initial_addresses)
439 self.assertEqual(len(new_addresses), 0)
442 self.vapi.ip6_add_del_address_using_prefix(self.pg1.sw_if_index,
444 address_prefix_length,