Gitiles
Code Review Sign In
gerrit.nordix.org / fdio / vpp / b33f413af46ec8dff7f222dbd5bc3bcec1502d3d / . / test / test_dhcp.py
blob: 04ab2e111ab5bb3a122a91c0f15101b2ff172988 [file] [log] [blame]
Neale Rannsfca0c242017-01-13 07:57:46 -0800[diff] [blame]1#!/usr/bin/env python
2
3import unittest
4import socket
5
6from framework import VppTestCase, VppTestRunner
Neale Rannsfca0c242017-01-13 07:57:46 -0800[diff] [blame]7
8from scapy.layers.l2 import Ether, getmacbyip
9from scapy.layers.inet import IP, UDP, ICMP
10from scapy.layers.inet6 import IPv6, in6_getnsmac, in6_mactoifaceid
11from scapy.layers.dhcp import DHCP, BOOTP, DHCPTypes
12from scapy.layers.dhcp6 import DHCP6, DHCP6_Solicit, DHCP6_RelayForward, \
13 DHCP6_RelayReply, DHCP6_Advertise, DHCP6OptRelayMsg, DHCP6OptIfaceId, \
14 DHCP6OptStatusCode, DHCP6OptVSS, DHCP6OptClientLinkLayerAddr
15from socket import AF_INET, AF_INET6
16from scapy.utils import inet_pton, inet_ntop
17from scapy.utils6 import in6_ptop
18
19DHCP4_CLIENT_PORT = 68
20DHCP4_SERVER_PORT = 67
21DHCP6_CLIENT_PORT = 547
22DHCP6_SERVER_PORT = 546
23
24
25def mk_ll_addr(mac):
26
27 euid = in6_mactoifaceid(mac)
28 addr = "fe80::" + euid
29 return addr
30
31
32class TestDHCP(VppTestCase):
33 """ DHCP Test Case """
34
35 def setUp(self):
36 super(TestDHCP, self).setUp()
37
38 # create 3 pg interfaces
39 self.create_pg_interfaces(range(4))
40
41 # pg0 and 1 are IP configured in VRF 0 and 1.
42 # pg2 and 3 are non IP-configured in VRF 0 and 1
43 table_id = 0
44 for i in self.pg_interfaces[:2]:
45 i.admin_up()
46 i.set_table_ip4(table_id)
47 i.set_table_ip6(table_id)
48 i.config_ip4()
49 i.resolve_arp()
50 i.config_ip6()
51 i.resolve_ndp()
52 table_id += 1
53
54 table_id = 0
55 for i in self.pg_interfaces[2:]:
56 i.admin_up()
57 i.set_table_ip4(table_id)
58 i.set_table_ip6(table_id)
59 table_id += 1
60
61 def send_and_assert_no_replies(self, intf, pkts, remark):
62 intf.add_stream(pkts)
63 self.pg_enable_capture(self.pg_interfaces)
64 self.pg_start()
65 for i in self.pg_interfaces:
66 i.assert_nothing_captured(remark=remark)
67
68 def validate_option_82(self, pkt, intf, ip_addr):
69 dhcp = pkt[DHCP]
70 found = 0
71 data = []
72
73 for i in dhcp.options:
74 if type(i) is tuple:
75 if i[0] == "relay_agent_Information":
76 #
77 # There are two sb-options present - each of length 6.
78 #
79 data = i[1]
80 self.assertEqual(len(data), 12)
81
82 #
83 # First sub-option is ID 1, len 4, then encoded
84 # sw_if_index. This test uses low valued indicies
85 # so [2:4] are 0.
86 # The ID space is VPP internal - so no matching value
87 # scapy
88 #
89 self.assertEqual(ord(data[0]), 1)
90 self.assertEqual(ord(data[1]), 4)
91 self.assertEqual(ord(data[2]), 0)
92 self.assertEqual(ord(data[3]), 0)
93 self.assertEqual(ord(data[4]), 0)
94 self.assertEqual(ord(data[5]), intf._sw_if_index)
95
96 #
97 # next sub-option is the IP address of the client side
98 # interface.
99 # sub-option ID=5, length (of a v4 address)=4
100 #
101 claddr = socket.inet_pton(AF_INET, ip_addr)
102
103 self.assertEqual(ord(data[6]), 5)
104 self.assertEqual(ord(data[7]), 4)
105 self.assertEqual(data[8], claddr[0])
106 self.assertEqual(data[9], claddr[1])
107 self.assertEqual(data[10], claddr[2])
108 self.assertEqual(data[11], claddr[3])
109
110 found = 1
111 self.assertTrue(found)
112
113 return data
114
115 def verify_dhcp_offer(self, pkt, intf, check_option_82=True):
116 ether = pkt[Ether]
117 self.assertEqual(ether.dst, "ff:ff:ff:ff:ff:ff")
118 self.assertEqual(ether.src, intf.local_mac)
119
120 ip = pkt[IP]
121 self.assertEqual(ip.dst, "255.255.255.255")
122 self.assertEqual(ip.src, intf.local_ip4)
123
124 udp = pkt[UDP]
125 self.assertEqual(udp.dport, DHCP4_CLIENT_PORT)
126 self.assertEqual(udp.sport, DHCP4_SERVER_PORT)
127
128 dhcp = pkt[DHCP]
129 is_offer = False
130 for o in dhcp.options:
131 if type(o) is tuple:
132 if o[0] == "message-type" \
133 and DHCPTypes[o[1]] == "offer":
134 is_offer = True
135 self.assertTrue(is_offer)
136
137 if check_option_82:
138 data = self.validate_option_82(pkt, intf, intf.local_ip4)
139
140 def verify_dhcp_discover(self, pkt, intf, src_intf=None,
141 option_82_present=True):
142 ether = pkt[Ether]
143 self.assertEqual(ether.dst, intf.remote_mac)
144 self.assertEqual(ether.src, intf.local_mac)
145
146 ip = pkt[IP]
147 self.assertEqual(ip.dst, intf.remote_ip4)
148 self.assertEqual(ip.src, intf.local_ip4)
149
150 udp = pkt[UDP]
151 self.assertEqual(udp.dport, DHCP4_SERVER_PORT)
152 self.assertEqual(udp.sport, DHCP4_CLIENT_PORT)
153
154 dhcp = pkt[DHCP]
155
156 is_discover = False
157 for o in dhcp.options:
158 if type(o) is tuple:
159 if o[0] == "message-type" \
160 and DHCPTypes[o[1]] == "discover":
161 is_discover = True
162 self.assertTrue(is_discover)
163
164 if option_82_present:
165 data = self.validate_option_82(pkt, src_intf, src_intf.local_ip4)
166 return data
167 else:
168 for i in dhcp.options:
169 if type(i) is tuple:
170 self.assertNotEqual(i[0], "relay_agent_Information")
171
172 def verify_dhcp6_solicit(self, pkt, intf,
173 peer_ip, peer_mac,
174 fib_id=0,
175 oui=0):
176 ether = pkt[Ether]
177 self.assertEqual(ether.dst, intf.remote_mac)
178 self.assertEqual(ether.src, intf.local_mac)
179
180 ip = pkt[IPv6]
181 self.assertEqual(in6_ptop(ip.dst), in6_ptop(intf.remote_ip6))
182 self.assertEqual(in6_ptop(ip.src), in6_ptop(intf.local_ip6))
183
184 udp = pkt[UDP]
185 self.assertEqual(udp.dport, DHCP6_CLIENT_PORT)
186 self.assertEqual(udp.sport, DHCP6_SERVER_PORT)
187
188 relay = pkt[DHCP6_RelayForward]
189 self.assertEqual(in6_ptop(relay.peeraddr), in6_ptop(peer_ip))
190 oid = pkt[DHCP6OptIfaceId]
191 cll = pkt[DHCP6OptClientLinkLayerAddr]
192 self.assertEqual(cll.optlen, 8)
193 self.assertEqual(cll.lltype, 1)
194 self.assertEqual(cll.clladdr, peer_mac)
195
196 vss = pkt[DHCP6OptVSS]
197 self.assertEqual(vss.optlen, 8)
198 self.assertEqual(vss.type, 1)
199 # the OUI and FIB-id are really 3 and 4 bytes resp.
200 # but the tested range is small
201 self.assertEqual(ord(vss.data[0]), 0)
202 self.assertEqual(ord(vss.data[1]), 0)
203 self.assertEqual(ord(vss.data[2]), oui)
204 self.assertEqual(ord(vss.data[3]), 0)
205 self.assertEqual(ord(vss.data[4]), 0)
206 self.assertEqual(ord(vss.data[5]), 0)
207 self.assertEqual(ord(vss.data[6]), fib_id)
208
209 # the relay message should be an encoded Solicit
210 msg = pkt[DHCP6OptRelayMsg]
211 sol = DHCP6_Solicit()
212 self.assertEqual(msg.optlen, len(str(sol)))
213 self.assertEqual(str(sol), (str(msg[1]))[:msg.optlen])
214
215 def verify_dhcp6_advert(self, pkt, intf, peer):
216 ether = pkt[Ether]
217 self.assertEqual(ether.dst, "ff:ff:ff:ff:ff:ff")
218 self.assertEqual(ether.src, intf.local_mac)
219
220 ip = pkt[IPv6]
221 self.assertEqual(in6_ptop(ip.dst), in6_ptop(peer))
222 self.assertEqual(in6_ptop(ip.src), in6_ptop(intf.local_ip6))
223
224 udp = pkt[UDP]
225 self.assertEqual(udp.dport, DHCP6_SERVER_PORT)
226 self.assertEqual(udp.sport, DHCP6_CLIENT_PORT)
227
228 # not sure why this is not decoding
229 # adv = pkt[DHCP6_Advertise]
230
231 def test_dhcp_proxy(self):
232 """ DHCPv4 Proxy """
233
234 #
235 # Verify no response to DHCP request without DHCP config
236 #
237 p_disc_vrf0 = (Ether(dst="ff:ff:ff:ff:ff:ff",
238 src=self.pg2.remote_mac) /
239 IP(src="0.0.0.0", dst="255.255.255.255") /
240 UDP(sport=DHCP4_CLIENT_PORT,
241 dport=DHCP4_SERVER_PORT) /
242 BOOTP(op=1) /
243 DHCP(options=[('message-type', 'discover'), ('end')]))
244 pkts_disc_vrf0 = [p_disc_vrf0]
245 p_disc_vrf1 = (Ether(dst="ff:ff:ff:ff:ff:ff",
246 src=self.pg3.remote_mac) /
247 IP(src="0.0.0.0", dst="255.255.255.255") /
248 UDP(sport=DHCP4_CLIENT_PORT,
249 dport=DHCP4_SERVER_PORT) /
250 BOOTP(op=1) /
251 DHCP(options=[('message-type', 'discover'), ('end')]))
252 pkts_disc_vrf1 = [p_disc_vrf0]
253
254 self.send_and_assert_no_replies(self.pg2, pkts_disc_vrf0,
255 "DHCP with no configuration")
256 self.send_and_assert_no_replies(self.pg3, pkts_disc_vrf1,
257 "DHCP with no configuration")
258
259 #
260 # Enable DHCP proxy in VRF 0
261 #
262 server_addr = self.pg0.remote_ip4n
263 src_addr = self.pg0.local_ip4n
264
265 self.vapi.dhcp_proxy_config(server_addr,
266 src_addr,
267 rx_table_id=0)
268
269 #
270 # Now a DHCP request on pg2, which is in the same VRF
271 # as the DHCP config, will result in a relayed DHCP
272 # message to the [fake] server
273 #
274 self.pg2.add_stream(pkts_disc_vrf0)
275 self.pg_enable_capture(self.pg_interfaces)
276 self.pg_start()
277
278 rx = self.pg0.get_capture(1)
279 rx = rx[0]
280
281 #
282 # Rx'd packet should be to the server address and from the configured
283 # source address
284 # UDP source ports are unchanged
285 # we've no option 82 config so that should be absent
286 #
287 self.verify_dhcp_discover(rx, self.pg0, option_82_present=False)
288
289 #
290 # Inject a response from the server
291 # VPP will only relay the offer if option 82 is present.
292 # so this one is dropped
293 #
294 p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
295 IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
296 UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_SERVER_PORT) /
297 BOOTP(op=1) /
298 DHCP(options=[('message-type', 'offer'), ('end')]))
299 pkts = [p]
300
301 self.send_and_assert_no_replies(self.pg0, pkts,
302 "DHCP offer no option 82")
303
304 #
305 # Configure sending option 82 in relayed messages
306 #
307 self.vapi.dhcp_proxy_config(server_addr,
308 src_addr,
309 rx_table_id=0,
310 insert_circuit_id=1)
311
312 #
313 # Send a request:
314 # again dropped, but ths time because there is no IP addrees on the
315 # clinet interfce to fill in the option.
316 #
317 self.send_and_assert_no_replies(self.pg2, pkts_disc_vrf0,
318 "DHCP no relay address")
319
320 #
321 # configure an IP address on the client facing interface
322 #
323 self.pg2.config_ip4()
324
325 #
326 # Try again with a discover packet
327 # Rx'd packet should be to the server address and from the configured
328 # source address
329 # UDP source ports are unchanged
330 # we've no option 82 config so that should be absent
331 #
332 self.pg2.add_stream(pkts_disc_vrf0)
333 self.pg_enable_capture(self.pg_interfaces)
334 self.pg_start()
335
336 rx = self.pg0.get_capture(1)
337 rx = rx[0]
338
339 option_82 = self.verify_dhcp_discover(rx, self.pg0, src_intf=self.pg2)
340
341 #
342 # Create an DHCP offer reply from the server with a correctly formatted
343 # option 82. i.e. send back what we just captured
344 # The offer, sent mcast to the client, still has option 82.
345 #
346 p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
347 IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
348 UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_SERVER_PORT) /
349 BOOTP(op=1) /
350 DHCP(options=[('message-type', 'offer'),
351 ('relay_agent_Information', option_82),
352 ('end')]))
353 pkts = [p]
354
355 self.pg0.add_stream(pkts)
356 self.pg_enable_capture(self.pg_interfaces)
357 self.pg_start()
358
359 rx = self.pg2.get_capture(1)
360 rx = rx[0]
361
362 self.verify_dhcp_offer(rx, self.pg2)
363
364 #
365 # Bogus Option 82:
366 #
367 # 1. not our IP address = not checked by VPP? so offer is replayed
368 # to client
369 bad_ip = option_82[0:8] + chr(33) + option_82[9:]
370
371 p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
372 IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
373 UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_SERVER_PORT) /
374 BOOTP(op=1) /
375 DHCP(options=[('message-type', 'offer'),
376 ('relay_agent_Information', bad_ip),
377 ('end')]))
378 pkts = [p]
379
380 self.pg0.add_stream(pkts)
381 self.pg_enable_capture(self.pg_interfaces)
382 self.pg_start()
383 rx = self.pg2.get_capture(1)
384 rx = rx[0]
385
386 self.verify_dhcp_offer(rx, self.pg2, check_option_82=False)
387 self.pg0.assert_nothing_captured(remark="")
388
389 # 2. Not a sw_if_index VPP knows
390 bad_if_index = option_82[0:2] + chr(33) + option_82[3:]
391
392 p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
393 IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
394 UDP(sport=DHCP4_SERVER_PORT, dport=DHCP4_SERVER_PORT) /
395 BOOTP(op=1) /
396 DHCP(options=[('message-type', 'offer'),
397 ('relay_agent_Information', bad_if_index),
398 ('end')]))
399 pkts = [p]
400 self.send_and_assert_no_replies(self.pg0, pkts,
401 "DHCP offer option 82 bad if index")
402
403 #
404 # Send a DHCP request in VRF 1. should be dropped.
405 #
406 self.send_and_assert_no_replies(self.pg3, pkts_disc_vrf1,
407 "DHCP with no configuration VRF 1")
408
409 #
410 # Delete the DHCP config in VRF 0
411 # Should now drop requests.
412 #
413 self.vapi.dhcp_proxy_config(server_addr,
414 src_addr,
415 rx_table_id=0,
416 is_add=0,
417 insert_circuit_id=1)
418
419 self.send_and_assert_no_replies(self.pg2, pkts_disc_vrf0,
420 "DHCP config removed VRF 0")
421 self.send_and_assert_no_replies(self.pg3, pkts_disc_vrf1,
422 "DHCP config removed VRF 1")
423
424 #
425 # Add DHCP config for VRF 1
426 #
427 server_addr = self.pg1.remote_ip4n
428 src_addr = self.pg1.local_ip4n
429 self.vapi.dhcp_proxy_config(server_addr,
430 src_addr,
431 rx_table_id=1,
432 server_table_id=1,
433 insert_circuit_id=1)
434
435 #
436 # Confim DHCP requests ok in VRF 1.
437 # - dropped on IP config on client interface
438 #
439 self.send_and_assert_no_replies(self.pg3, pkts_disc_vrf1,
440 "DHCP config removed VRF 1")
441
442 #
443 # configure an IP address on the client facing interface
444 #
445 self.pg3.config_ip4()
446
447 self.pg3.add_stream(pkts_disc_vrf1)
448 self.pg_enable_capture(self.pg_interfaces)
449 self.pg_start()
450
451 rx = self.pg1.get_capture(1)
452 rx = rx[0]
453 self.verify_dhcp_discover(rx, self.pg1, src_intf=self.pg3)
454
455 #
456 # remove DHCP config to cleanup
457 #
458 self.vapi.dhcp_proxy_config(server_addr,
459 src_addr,
460 rx_table_id=1,
461 server_table_id=1,
462 insert_circuit_id=1,
463 is_add=0)
464
465 self.send_and_assert_no_replies(self.pg2, pkts_disc_vrf0,
466 "DHCP cleanup VRF 0")
467 self.send_and_assert_no_replies(self.pg3, pkts_disc_vrf1,
468 "DHCP cleanup VRF 1")
469
470 def test_dhcp6_proxy(self):
471 """ DHCPv6 Proxy"""
472 #
473 # Verify no response to DHCP request without DHCP config
474 #
475 dhcp_solicit_dst = "ff02::1:2"
476 dhcp_solicit_src_vrf0 = mk_ll_addr(self.pg2.remote_mac)
477 dhcp_solicit_src_vrf1 = mk_ll_addr(self.pg3.remote_mac)
478 server_addr_vrf0 = self.pg0.remote_ip6n
479 src_addr_vrf0 = self.pg0.local_ip6n
480 server_addr_vrf1 = self.pg1.remote_ip6n
481 src_addr_vrf1 = self.pg1.local_ip6n
482
Neale Rannsfca0c242017-01-13 07:57:46 -0800[diff] [blame]483 dmac = in6_getnsmac(inet_pton(socket.AF_INET6, dhcp_solicit_dst))
484 p_solicit_vrf0 = (Ether(dst=dmac, src=self.pg2.remote_mac) /
485 IPv6(src=dhcp_solicit_src_vrf0,
486 dst=dhcp_solicit_dst) /
487 UDP(sport=DHCP6_SERVER_PORT,
488 dport=DHCP6_CLIENT_PORT) /
489 DHCP6_Solicit())
490 pkts_solicit_vrf0 = [p_solicit_vrf0]
491 p_solicit_vrf1 = (Ether(dst=dmac, src=self.pg3.remote_mac) /
492 IPv6(src=dhcp_solicit_src_vrf1,
493 dst=dhcp_solicit_dst) /
494 UDP(sport=DHCP6_SERVER_PORT,
495 dport=DHCP6_CLIENT_PORT) /
496 DHCP6_Solicit())
497 pkts_solicit_vrf1 = [p_solicit_vrf1]
498
499 self.send_and_assert_no_replies(self.pg2, pkts_solicit_vrf0,
500 "DHCP with no configuration")
501 self.send_and_assert_no_replies(self.pg3, pkts_solicit_vrf1,
502 "DHCP with no configuration")
503
504 #
505 # DHCPv6 config in VRF 0.
506 # Packets still dropped because the client facing interface has no
507 # IPv6 config
508 #
509 self.vapi.dhcp_proxy_config(server_addr_vrf0,
510 src_addr_vrf0,
511 rx_table_id=0,
512 server_table_id=0,
513 insert_circuit_id=1,
514 is_ipv6=1)
515
516 self.send_and_assert_no_replies(self.pg2, pkts_solicit_vrf0,
517 "DHCP with no configuration")
518 self.send_and_assert_no_replies(self.pg3, pkts_solicit_vrf1,
519 "DHCP with no configuration")
520
521 #
522 # configure an IP address on the client facing interface
523 #
524 self.pg2.config_ip6()
525
526 #
527 # Now the DHCP requests are relayed to the server
528 #
529 self.pg2.add_stream(pkts_solicit_vrf0)
530 self.pg_enable_capture(self.pg_interfaces)
531 self.pg_start()
532
533 rx = self.pg0.get_capture(1)
534 rx = rx[0]
535 self.verify_dhcp6_solicit(rx, self.pg0,
536 dhcp_solicit_src_vrf0,
537 self.pg2.remote_mac)
538
539 #
540 # Exception cases for rejected relay responses
541 #
542
543 # 1 - not a relay reply
544 p_adv_vrf0 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
545 IPv6(dst=self.pg0.local_ip6, src=self.pg0.remote_ip6) /
546 UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
547 DHCP6_Advertise())
548 pkts_adv_vrf0 = [p_adv_vrf0]
549 self.send_and_assert_no_replies(self.pg2, pkts_adv_vrf0,
550 "DHCP6 not a relay reply")
551
552 # 2 - no relay message option
553 p_adv_vrf0 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
554 IPv6(dst=self.pg0.local_ip6, src=self.pg0.remote_ip6) /
555 UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
556 DHCP6_RelayReply() /
557 DHCP6_Advertise())
558 pkts_adv_vrf0 = [p_adv_vrf0]
559 self.send_and_assert_no_replies(self.pg2, pkts_adv_vrf0,
560 "DHCP not a relay message")
561
562 # 3 - no circuit ID
563 p_adv_vrf0 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
564 IPv6(dst=self.pg0.local_ip6, src=self.pg0.remote_ip6) /
565 UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
566 DHCP6_RelayReply() /
567 DHCP6OptRelayMsg(optlen=0) /
568 DHCP6_Advertise())
569 pkts_adv_vrf0 = [p_adv_vrf0]
570 self.send_and_assert_no_replies(self.pg2, pkts_adv_vrf0,
571 "DHCP6 no circuit ID")
572 # 4 - wrong circuit ID
573 p_adv_vrf0 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
574 IPv6(dst=self.pg0.local_ip6, src=self.pg0.remote_ip6) /
575 UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
576 DHCP6_RelayReply() /
577 DHCP6OptIfaceId(optlen=4, ifaceid='\x00\x00\x00\x05') /
578 DHCP6OptRelayMsg(optlen=0) /
579 DHCP6_Advertise())
580 pkts_adv_vrf0 = [p_adv_vrf0]
581 self.send_and_assert_no_replies(self.pg2, pkts_adv_vrf0,
582 "DHCP6 wrong circuit ID")
583
584 #
585 # Send the relay response (the advertisement)
586 # - no peer address
587 p_adv_vrf0 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
588 IPv6(dst=self.pg0.local_ip6, src=self.pg0.remote_ip6) /
589 UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
590 DHCP6_RelayReply() /
591 DHCP6OptIfaceId(optlen=4, ifaceid='\x00\x00\x00\x03') /
592 DHCP6OptRelayMsg(optlen=0) /
593 DHCP6_Advertise(trid=1) /
594 DHCP6OptStatusCode(statuscode=0))
595 pkts_adv_vrf0 = [p_adv_vrf0]
596
597 self.pg0.add_stream(pkts_adv_vrf0)
598 self.pg_enable_capture(self.pg_interfaces)
599 self.pg_start()
600
601 rx = self.pg2.get_capture(1)
602 rx = rx[0]
603 self.verify_dhcp6_advert(rx, self.pg2, "::")
604
605 #
606 # Send the relay response (the advertisement)
607 # - with peer address
608 p_adv_vrf0 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
609 IPv6(dst=self.pg0.local_ip6, src=self.pg0.remote_ip6) /
610 UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
611 DHCP6_RelayReply(peeraddr=dhcp_solicit_src_vrf0) /
612 DHCP6OptIfaceId(optlen=4, ifaceid='\x00\x00\x00\x03') /
613 DHCP6OptRelayMsg(optlen=0) /
614 DHCP6_Advertise(trid=1) /
615 DHCP6OptStatusCode(statuscode=0))
616 pkts_adv_vrf0 = [p_adv_vrf0]
617
618 self.pg0.add_stream(pkts_adv_vrf0)
619 self.pg_enable_capture(self.pg_interfaces)
620 self.pg_start()
621
622 rx = self.pg2.get_capture(1)
623 rx = rx[0]
624 self.verify_dhcp6_advert(rx, self.pg2, dhcp_solicit_src_vrf0)
625
626 #
627 # Add all the config for VRF 1
628 #
629 self.vapi.dhcp_proxy_config(server_addr_vrf1,
630 src_addr_vrf1,
631 rx_table_id=1,
632 server_table_id=1,
633 insert_circuit_id=1,
634 is_ipv6=1)
635 self.pg3.config_ip6()
636
637 #
638 # VRF 1 solicit
639 #
640 self.pg3.add_stream(pkts_solicit_vrf1)
641 self.pg_enable_capture(self.pg_interfaces)
642 self.pg_start()
643
644 rx = self.pg1.get_capture(1)
645 rx = rx[0]
646 self.verify_dhcp6_solicit(rx, self.pg1,
647 dhcp_solicit_src_vrf1,
648 self.pg3.remote_mac)
649
650 #
651 # VRF 1 Advert
652 #
653 p_adv_vrf1 = (Ether(dst=self.pg1.local_mac, src=self.pg1.remote_mac) /
654 IPv6(dst=self.pg1.local_ip6, src=self.pg1.remote_ip6) /
655 UDP(sport=DHCP6_SERVER_PORT, dport=DHCP6_SERVER_PORT) /
656 DHCP6_RelayReply(peeraddr=dhcp_solicit_src_vrf1) /
657 DHCP6OptIfaceId(optlen=4, ifaceid='\x00\x00\x00\x04') /
658 DHCP6OptRelayMsg(optlen=0) /
659 DHCP6_Advertise(trid=1) /
660 DHCP6OptStatusCode(statuscode=0))
661 pkts_adv_vrf1 = [p_adv_vrf1]
662
663 self.pg1.add_stream(pkts_adv_vrf1)
664 self.pg_enable_capture(self.pg_interfaces)
665 self.pg_start()
666
667 rx = self.pg3.get_capture(1)
668 rx = rx[0]
669 self.verify_dhcp6_advert(rx, self.pg3, dhcp_solicit_src_vrf1)
670
671 #
672 # Add VSS config
673 # table=1, fib=id=1, oui=4
674 self.vapi.dhcp_proxy_set_vss(1, 1, 4, is_ip6=1)
675
676 self.pg3.add_stream(pkts_solicit_vrf1)
677 self.pg_enable_capture(self.pg_interfaces)
678 self.pg_start()
679
680 rx = self.pg1.get_capture(1)
681 rx = rx[0]
682 self.verify_dhcp6_solicit(rx, self.pg1,
683 dhcp_solicit_src_vrf1,
684 self.pg3.remote_mac,
685 fib_id=1,
686 oui=4)
687
688 #
689 # Remove the VSS config
690 # relayed DHCP has default vlaues in the option.
691 #
692 self.vapi.dhcp_proxy_set_vss(1, 1, 4, is_ip6=1, is_add=0)
693
694 self.pg3.add_stream(pkts_solicit_vrf1)
695 self.pg_enable_capture(self.pg_interfaces)
696 self.pg_start()
697
698 rx = self.pg1.get_capture(1)
699 rx = rx[0]
700 self.verify_dhcp6_solicit(rx, self.pg1,
701 dhcp_solicit_src_vrf1,
702 self.pg3.remote_mac)
703
704 #
705 # Cleanup
706 #
707 self.vapi.dhcp_proxy_config(server_addr_vrf1,
708 src_addr_vrf1,
709 rx_table_id=1,
710 server_table_id=1,
711 insert_circuit_id=1,
712 is_ipv6=1,
713 is_add=0)
714 self.vapi.dhcp_proxy_config(server_addr_vrf1,
715 src_addr_vrf1,
716 rx_table_id=0,
717 server_table_id=0,
718 insert_circuit_id=1,
719 is_ipv6=1,
720 is_add=0)
721
Neale Rannsfca0c242017-01-13 07:57:46 -0800[diff] [blame]722if __name__ == '__main__':
723 unittest.main(testRunner=VppTestRunner)