aboutsummaryrefslogtreecommitdiffstats
path: root/test/test_udp.py
blob: 031867cf63d426bff71d031e5c1168bfd0138d1b (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
#!/usr/bin/env python3
import unittest
from framework import tag_fixme_vpp_workers
from framework import VppTestCase, VppTestRunner

from vpp_udp_encap import find_udp_encap, VppUdpEncap
from vpp_udp_decap import VppUdpDecap
from vpp_ip_route import VppIpRoute, VppRoutePath, VppIpTable, VppMplsLabel, \
    VppMplsTable, VppMplsRoute, FibPathType, FibPathProto
from vpp_neighbor import VppNeighbor
from vpp_papi import VppEnum

from scapy.packet import Raw
from scapy.layers.l2 import Ether
from scapy.layers.inet import IP, UDP, ICMP
from scapy.layers.inet6 import IPv6
from scapy.contrib.mpls import MPLS

NUM_PKTS = 67


@tag_fixme_vpp_workers
class TestUdpEncap(VppTestCase):
    """ UDP Encap Test Case """

    @classmethod
    def setUpClass(cls):
        super(TestUdpEncap, cls).setUpClass()

    @classmethod
    def tearDownClass(cls):
        super(TestUdpEncap, cls).tearDownClass()

    def setUp(self):
        super(TestUdpEncap, self).setUp()

        # create 2 pg interfaces
        self.create_pg_interfaces(range(4))

        # setup interfaces
        # assign them different tables.
        table_id = 0
        self.tables = []

        for i in self.pg_interfaces:
            i.admin_up()

            if table_id != 0:
                tbl = VppIpTable(self, table_id)
                tbl.add_vpp_config()
                self.tables.append(tbl)
                tbl = VppIpTable(self, table_id, is_ip6=1)
                tbl.add_vpp_config()
                self.tables.append(tbl)

            i.set_table_ip4(table_id)
            i.set_table_ip6(table_id)
            i.config_ip4()
            i.resolve_arp()
            i.config_ip6()
            i.resolve_ndp()
            table_id += 1

    def tearDown(self):
        for i in self.pg_interfaces:
            i.unconfig_ip4()
            i.unconfig_ip6()
            i.set_table_ip4(0)
            i.set_table_ip6(0)
            i.admin_down()
        super(TestUdpEncap, self).tearDown()

    def validate_outer4(self, rx, encap_obj):
        self.assertEqual(rx[IP].src, encap_obj.src_ip_s)
        self.assertEqual(rx[IP].dst, encap_obj.dst_ip_s)
        self.assertEqual(rx[UDP].sport, encap_obj.src_port)
        self.assertEqual(rx[UDP].dport, encap_obj.dst_port)

    def validate_outer6(self, rx, encap_obj):
        self.assertEqual(rx[IPv6].src, encap_obj.src_ip_s)
        self.assertEqual(rx[IPv6].dst, encap_obj.dst_ip_s)
        self.assertEqual(rx[UDP].sport, encap_obj.src_port)
        self.assertEqual(rx[UDP].dport, encap_obj.dst_port)

    def validate_inner4(self, rx, tx, ttl=None):
        self.assertEqual(rx[IP].src, tx[IP].src)
        self.assertEqual(rx[IP].dst, tx[IP].dst)
        if ttl:
            self.assertEqual(rx[IP].ttl, ttl)
        else:
            self.assertEqual(rx[IP].ttl, tx[IP].ttl)

    def validate_inner6(self, rx, tx, hlim=None):
        self.assertEqual(rx.src, tx[IPv6].src)
        self.assertEqual(rx.dst, tx[IPv6].dst)
        if hlim:
            self.assertEqual(rx.hlim, hlim)
        else:
            self.assertEqual(rx.hlim, tx[IPv6].hlim)

    def test_udp_encap(self):
        """ UDP Encap test
        """

        #
        # construct a UDP encap object through each of the peers
        # v4 through the first two peers, v6 through the second.
        # The last encap is v4 and is used to check the codepath
        # where 2 different udp encap objects are processed at the
        # same time
        #
        udp_encap_0 = VppUdpEncap(self,
                                  self.pg0.local_ip4,
                                  self.pg0.remote_ip4,
                                  330, 440)
        udp_encap_1 = VppUdpEncap(self,
                                  self.pg1.local_ip4,
                                  self.pg1.remote_ip4,
                                  331, 441,
                                  table_id=1)
        udp_encap_2 = VppUdpEncap(self,
                                  self.pg2.local_ip6,
                                  self.pg2.remote_ip6,
                                  332, 442,
                                  table_id=2)
        udp_encap_3 = VppUdpEncap(self,
                                  self.pg3.local_ip6,
                                  self.pg3.remote_ip6,
                                  333, 443,
                                  table_id=3)
        udp_encap_4 = VppUdpEncap(self,
                                  self.pg0.local_ip4,
                                  self.pg0.remote_ip4,
                                  334, 444)
        udp_encap_0.add_vpp_config()
        udp_encap_1.add_vpp_config()
        udp_encap_2.add_vpp_config()
        udp_encap_3.add_vpp_config()
        udp_encap_4.add_vpp_config()

        self.logger.info(self.vapi.cli("sh udp encap"))

        self.assertTrue(find_udp_encap(self, udp_encap_2))
        self.assertTrue(find_udp_encap(self, udp_encap_3))
        self.assertTrue(find_udp_encap(self, udp_encap_0))
        self.assertTrue(find_udp_encap(self, udp_encap_1))
        self.assertTrue(find_udp_encap(self, udp_encap_4))

        #
        # Routes via each UDP encap object - all combinations of v4 and v6.
        #
        route_4o4 = VppIpRoute(
            self, "1.1.0.1", 24,
            [VppRoutePath("0.0.0.0",
                          0xFFFFFFFF,
                          type=FibPathType.FIB_PATH_TYPE_UDP_ENCAP,
                          next_hop_id=udp_encap_0.id,
                          proto=FibPathProto.FIB_PATH_NH_PROTO_IP4)],
            table_id=1)
        # specific route to match encap4, to test encap of 2 packets using 2
        # different encap
        route_4o4_2 = VppIpRoute(
            self, "1.1.0.2", 32,
            [VppRoutePath("0.0.0.0",
                          0xFFFFFFFF,
                          type=FibPathType.FIB_PATH_TYPE_UDP_ENCAP,
                          next_hop_id=udp_encap_4.id,
                          proto=FibPathProto.FIB_PATH_NH_PROTO_IP4)],
            table_id=1)
        route_4o6 = VppIpRoute(
            self, "1.1.2.1", 32,
            [VppRoutePath("0.0.0.0",
                          0xFFFFFFFF,
                          type=FibPathType.FIB_PATH_TYPE_UDP_ENCAP,
                          next_hop_id=udp_encap_2.id,
                          proto=FibPathProto.FIB_PATH_NH_PROTO_IP4)])
        route_6o4 = VppIpRoute(
            self, "2001::1", 128,
            [VppRoutePath("0.0.0.0",
                          0xFFFFFFFF,
                          type=FibPathType.FIB_PATH_TYPE_UDP_ENCAP,
                          next_hop_id=udp_encap_1.id,
                          proto=FibPathProto.FIB_PATH_NH_PROTO_IP6)])
        route_6o6 = VppIpRoute(
            self, "2001::3", 128,
            [VppRoutePath("0.0.0.0",
                          0xFFFFFFFF,
                          type=FibPathType.FIB_PATH_TYPE_UDP_ENCAP,
                          next_hop_id=udp_encap_3.id,
                          proto=FibPathProto.FIB_PATH_NH_PROTO_IP6)])
        route_4o6.add_vpp_config()
        route_6o6.add_vpp_config()
        route_6o4.add_vpp_config()
        route_4o4.add_vpp_config()
        route_4o4_2.add_vpp_config()

        #
        # 4o4 encap
        # we add a single packet matching the last encap at the beginning of
        # the packet vector so that we encap 2 packets with different udp
        # encap object at the same time
        #
        p_4o4 = (Ether(src=self.pg1.remote_mac,
                       dst=self.pg1.local_mac) /
                 IP(src="2.2.2.2", dst="1.1.0.1") /
                 UDP(sport=1234, dport=1234) /
                 Raw(b'\xa5' * 100))
        p_4o4_2 = (Ether(src=self.pg1.remote_mac,
                         dst=self.pg1.local_mac) /
                   IP(src="2.2.2.2", dst="1.1.0.2") /
                   UDP(sport=1234, dport=1234) /
                   Raw(b'\xa5' * 100))
        rx = self.send_and_expect(
            self.pg1, p_4o4_2 * 1 + p_4o4 * (NUM_PKTS - 1), self.pg0)
        # checking encap4 magic packet
        p = rx.pop(0)
        self.validate_outer4(p, udp_encap_4)
        p = IP(p["UDP"].payload.load)
        self.validate_inner4(p, p_4o4_2)
        self.assertEqual(udp_encap_4.get_stats()['packets'], 1)
        # checking remaining packets for encap0
        for p in rx:
            self.validate_outer4(p, udp_encap_0)
            p = IP(p["UDP"].payload.load)
            self.validate_inner4(p, p_4o4)
        self.assertEqual(udp_encap_0.get_stats()['packets'], NUM_PKTS - 1)

        #
        # 4o6 encap
        #
        p_4o6 = (Ether(src=self.pg0.remote_mac,
                       dst=self.pg0.local_mac) /
                 IP(src="2.2.2.2", dst="1.1.2.1") /
                 UDP(sport=1234, dport=1234) /
                 Raw(b'\xa5' * 100))
        rx = self.send_and_expect(self.pg0, p_4o6*NUM_PKTS, self.pg2)
        for p in rx:
            self.validate_outer6(p, udp_encap_2)
            p = IP(p["UDP"].payload.load)
            self.validate_inner4(p, p_4o6)
        self.assertEqual(udp_encap_2.get_stats()['packets'], NUM_PKTS)

        #
        # 6o4 encap
        #
        p_6o4 = (Ether(src=self.pg0.remote_mac,
                       dst=self.pg0.local_mac) /
                 IPv6(src="2001::100", dst="2001::1") /
                 UDP(sport=1234, dport=1234) /
                 Raw(b'\xa5' * 100))
        rx = self.send_and_expect(self.pg0, p_6o4*NUM_PKTS, self.pg1)
        for p in rx:
            self.validate_outer4(p, udp_encap_1)
            p = IPv6(p["UDP"].payload.load)
            self.validate_inner6(p, p_6o4)
        self.assertEqual(udp_encap_1.get_stats()['packets'], NUM_PKTS)

        #
        # 6o6 encap
        #
        p_6o6 = (Ether(src=self.pg0.remote_mac,
                       dst=self.pg0.local_mac) /
                 IPv6(src="2001::100", dst="2001::3") /
                 UDP(sport=1234, dport=1234) /
                 Raw(b'\xa5' * 100))
        rx = self.send_and_expect(self.pg0, p_6o6*NUM_PKTS, self.pg3)
        for p in rx:
            self.validate_outer6(p, udp_encap_3)
            p = IPv6(p["UDP"].payload.load)
            self.validate_inner6(p, p_6o6)
        self.assertEqual(udp_encap_3.get_stats()['packets'], NUM_PKTS)

        #
        # A route with an output label
        # the TTL of the inner packet is decremented on LSP ingress
        #
        route_4oMPLSo4 = VppIpRoute(
            self, "1.1.2.22", 32,
            [VppRoutePath("0.0.0.0",
                          0xFFFFFFFF,
                          type=FibPathType.FIB_PATH_TYPE_UDP_ENCAP,
                          next_hop_id=1,
                          labels=[VppMplsLabel(66)])])
        route_4oMPLSo4.add_vpp_config()

        p_4omo4 = (Ether(src=self.pg0.remote_mac,
                         dst=self.pg0.local_mac) /
                   IP(src="2.2.2.2", dst="1.1.2.22") /
                   UDP(sport=1234, dport=1234) /
                   Raw(b'\xa5' * 100))
        rx = self.send_and_expect(self.pg0, p_4omo4*NUM_PKTS, self.pg1)
        for p in rx:
            self.validate_outer4(p, udp_encap_1)
            p = MPLS(p["UDP"].payload.load)
            self.validate_inner4(p, p_4omo4, ttl=63)
        self.assertEqual(udp_encap_1.get_stats()['packets'], 2*NUM_PKTS)

    def test_udp_decap(self):
        """ UDP Decap test
        """
        #
        # construct a UDP decap object for each type of protocol
        #

        # IPv4
        udp_api_proto = VppEnum.vl_api_udp_decap_next_proto_t
        next_proto = udp_api_proto.UDP_API_DECAP_PROTO_IP4
        udp_decap_0 = VppUdpDecap(self, 1, 220, next_proto)

        # IPv6
        next_proto = udp_api_proto.UDP_API_DECAP_PROTO_IP6
        udp_decap_1 = VppUdpDecap(self, 0, 221, next_proto)

        # MPLS
        next_proto = udp_api_proto.UDP_API_DECAP_PROTO_MPLS
        udp_decap_2 = VppUdpDecap(self, 1, 222, next_proto)

        udp_decap_0.add_vpp_config()
        udp_decap_1.add_vpp_config()
        udp_decap_2.add_vpp_config()

        #
        # Routes via the corresponding pg after the UDP decap
        #
        route_4 = VppIpRoute(
            self, "1.1.1.1", 32,
            [VppRoutePath("0.0.0.0", self.pg0.sw_if_index)],
            table_id=0)

        route_6 = VppIpRoute(
            self, "2001::1", 128,
            [VppRoutePath("::", self.pg1.sw_if_index)],
            table_id=1)

        route_mo4 = VppIpRoute(
            self, "3.3.3.3", 32,
            [VppRoutePath("0.0.0.0", self.pg2.sw_if_index)],
            table_id=2)

        route_4.add_vpp_config()
        route_6.add_vpp_config()
        route_mo4.add_vpp_config()

        #
        # Adding neighbors to route the packets
        #
        n_4 = VppNeighbor(self,
                          self.pg0.sw_if_index,
                          "00:11:22:33:44:55",
                          "1.1.1.1")
        n_6 = VppNeighbor(self,
                          self.pg1.sw_if_index,
                          "11:22:33:44:55:66",
                          "2001::1")
        n_mo4 = VppNeighbor(self,
                            self.pg2.sw_if_index,
                            "22:33:44:55:66:77",
                            "3.3.3.3")

        n_4.add_vpp_config()
        n_6.add_vpp_config()
        n_mo4.add_vpp_config()

        #
        # MPLS decapsulation config
        #
        mpls_table = VppMplsTable(self, 0)
        mpls_table.add_vpp_config()
        mpls_route = VppMplsRoute(
            self, 77, 1,
            [VppRoutePath("0.0.0.0",
                          0xFFFFFFFF,
                          nh_table_id=2,
                          proto=FibPathProto.FIB_PATH_NH_PROTO_IP4)])
        mpls_route.add_vpp_config()

        #
        # UDP over ipv4 decap
        #
        p_4 = (Ether(src=self.pg0.remote_mac,
                     dst=self.pg0.local_mac) /
               IP(src=self.pg0.remote_ip4, dst=self.pg0.local_ip4) /
               UDP(sport=1111, dport=220) /
               IP(src="2.2.2.2", dst="1.1.1.1") /
               UDP(sport=1234, dport=4321) /
               Raw(b'\xa5' * 100))

        rx = self.send_and_expect(self.pg0, p_4*NUM_PKTS, self.pg0)
        p_4 = IP(p_4["UDP"].payload)
        for p in rx:
            p = IP(p["Ether"].payload)
            self.validate_inner4(p, p_4, ttl=63)

        #
        # UDP over ipv6 decap
        #
        p_6 = (Ether(src=self.pg1.remote_mac,
                     dst=self.pg1.local_mac) /
               IPv6(src=self.pg1.remote_ip6, dst=self.pg1.local_ip6) /
               UDP(sport=2222, dport=221) /
               IPv6(src="2001::100", dst="2001::1") /
               UDP(sport=1234, dport=4321) /
               Raw(b'\xa5' * 100))

        rx = self.send_and_expect(self.pg1, p_6*NUM_PKTS, self.pg1)
        p_6 = IPv6(p_6["UDP"].payload)
        p = IPv6(rx[0]["Ether"].payload)
        for p in rx:
            p = IPv6(p["Ether"].payload)
            self.validate_inner6(p, p_6, hlim=63)

        #
        # UDP over mpls decap
        #
        p_mo4 = (Ether(src=self.pg2.remote_mac,
                       dst=self.pg2.local_mac) /
                 IP(src=self.pg2.remote_ip4, dst=self.pg2.local_ip4) /
                 UDP(sport=3333, dport=222) /
                 MPLS(label=77, ttl=1) /
                 IP(src="4.4.4.4", dst="3.3.3.3") /
                 UDP(sport=1234, dport=4321) /
                 Raw(b'\xa5' * 100))

        self.pg2.enable_mpls()
        rx = self.send_and_expect(self.pg2, p_mo4*NUM_PKTS, self.pg2)
        self.pg2.disable_mpls()
        p_mo4 = IP(MPLS(p_mo4["UDP"].payload).payload)
        for p in rx:
            p = IP(p["Ether"].payload)
            self.validate_inner4(p, p_mo4, ttl=63)


@tag_fixme_vpp_workers
class TestUDP(VppTestCase):
    """ UDP Test Case """

    @classmethod
    def setUpClass(cls):
        super(TestUDP, cls).setUpClass()

    @classmethod
    def tearDownClass(cls):
        super(TestUDP, cls).tearDownClass()

    def setUp(self):
        super(TestUDP, self).setUp()
        self.vapi.session_enable_disable(is_enable=1)
        self.create_loopback_interfaces(2)

        table_id = 0

        for i in self.lo_interfaces:
            i.admin_up()

            if table_id != 0:
                tbl = VppIpTable(self, table_id)
                tbl.add_vpp_config()

            i.set_table_ip4(table_id)
            i.config_ip4()
            table_id += 1

        # Configure namespaces
        self.vapi.app_namespace_add_del(namespace_id="0",
                                        sw_if_index=self.loop0.sw_if_index)
        self.vapi.app_namespace_add_del(namespace_id="1",
                                        sw_if_index=self.loop1.sw_if_index)

    def tearDown(self):
        for i in self.lo_interfaces:
            i.unconfig_ip4()
            i.set_table_ip4(0)
            i.admin_down()
        self.vapi.session_enable_disable(is_enable=0)
        super(TestUDP, self).tearDown()

    def test_udp_transfer(self):
        """ UDP echo client/server transfer """

        # Add inter-table routes
        ip_t01 = VppIpRoute(self, self.loop1.local_ip4, 32,
                            [VppRoutePath("0.0.0.0",
                                          0xffffffff,
                                          nh_table_id=1)])
        ip_t10 = VppIpRoute(self, self.loop0.local_ip4, 32,
                            [VppRoutePath("0.0.0.0",
                                          0xffffffff,
                                          nh_table_id=0)], table_id=1)
        ip_t01.add_vpp_config()
        ip_t10.add_vpp_config()

        # Start builtin server and client
        uri = "udp://" + self.loop0.local_ip4 + "/1234"
        error = self.vapi.cli("test echo server appns 0 fifo-size 4 no-echo" +
                              "uri " + uri)
        if error:
            self.logger.critical(error)
            self.assertNotIn("failed", error)

        error = self.vapi.cli("test echo client mbytes 10 appns 1 " +
                              "fifo-size 4 no-output test-bytes " +
                              "syn-timeout 2 no-return uri " + uri)
        if error:
            self.logger.critical(error)
            self.assertNotIn("failed", error)

        self.logger.debug(self.vapi.cli("show session verbose 2"))

        # Delete inter-table routes
        ip_t01.remove_vpp_config()
        ip_t10.remove_vpp_config()


if __name__ == '__main__':
    unittest.main(testRunner=VppTestRunner)