summaryrefslogtreecommitdiffstats
path: root/test/test_linux_cp.py
blob: 95a9f1aca1f48d603819f47ec96d9a3d7eec09bf (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
#!/usr/bin/env python3

import unittest

from scapy.layers.inet import IP, UDP
from scapy.layers.inet6 import IPv6, Raw
from scapy.layers.l2 import Ether, ARP

from util import reassemble4
from vpp_object import VppObject
from framework import VppTestCase
from asfframework import VppTestRunner
from vpp_ipip_tun_interface import VppIpIpTunInterface
from template_ipsec import (
    TemplateIpsec,
    IpsecTun4,
)
from template_ipsec import (
    TemplateIpsec,
    IpsecTun4,
)
from test_ipsec_tun_if_esp import TemplateIpsecItf4


class VppLcpPair(VppObject):
    def __init__(self, test, phy, host):
        self._test = test
        self.phy = phy
        self.host = host

    def add_vpp_config(self):
        self._test.vapi.cli("test lcp add phy %s host %s" % (self.phy, self.host))
        self._test.registry.register(self, self._test.logger)
        return self

    def remove_vpp_config(self):
        self._test.vapi.cli("test lcp del phy %s host %s" % (self.phy, self.host))

    def object_id(self):
        return "lcp:%d:%d" % (self.phy.sw_if_index, self.host.sw_if_index)

    def query_vpp_config(self):
        pairs = list(self._test.vapi.vpp.details_iter(self._test.vapi.lcp_itf_pair_get))

        for p in pairs:
            if (
                p.phy_sw_if_index == self.phy.sw_if_index
                and p.host_sw_if_index == self.host.sw_if_index
            ):
                return True
        return False


class TestLinuxCP(VppTestCase):
    """Linux Control Plane"""

    extra_vpp_plugin_config = [
        "plugin",
        "linux_cp_plugin.so",
        "{",
        "enable",
        "}",
        "plugin",
        "linux_cp_unittest_plugin.so",
        "{",
        "enable",
        "}",
    ]

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

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

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

        # create 4 pg interfaces so we can create two pairs
        self.create_pg_interfaces(range(4))

        # create on ip4 and one ip6 pg tun
        self.pg_interfaces += self.create_pg_ip4_interfaces(range(4, 5))
        self.pg_interfaces += self.create_pg_ip6_interfaces(range(5, 6))

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

    def tearDown(self):
        for i in self.pg_interfaces:
            i.admin_down()
        super(TestLinuxCP, self).tearDown()

    def test_linux_cp_tap(self):
        """Linux CP TAP"""

        #
        # Setup
        #

        arp_opts = {"who-has": 1, "is-at": 2}

        # create two pairs, wihch a bunch of hots on the phys
        hosts = [self.pg0, self.pg1]
        phys = [self.pg2, self.pg3]
        N_HOSTS = 4

        for phy in phys:
            phy.config_ip4()
            phy.generate_remote_hosts(4)
            phy.configure_ipv4_neighbors()

        pair1 = VppLcpPair(self, phys[0], hosts[0]).add_vpp_config()
        pair2 = VppLcpPair(self, phys[1], hosts[1]).add_vpp_config()

        self.logger.info(self.vapi.cli("sh lcp adj verbose"))
        self.logger.info(self.vapi.cli("sh lcp"))

        #
        # Traffic Tests
        #

        # hosts to phys
        for phy, host in zip(phys, hosts):
            for j in range(N_HOSTS):
                p = (
                    Ether(src=phy.local_mac, dst=host.local_mac)
                    / IP(src=phy.local_ip4, dst=phy.remote_hosts[j].ip4)
                    / UDP(sport=1234, dport=1234)
                    / Raw()
                )

                rxs = self.send_and_expect(host, [p], phy)

                # verify packet is unchanged
                for rx in rxs:
                    self.assertEqual(p.show2(True), rx.show2(True))

                # ARPs x-connect to phy
                p = Ether(dst="ff:ff:ff:ff:ff:ff", src=phy.remote_hosts[j].mac) / ARP(
                    op="who-has",
                    hwdst=phy.remote_hosts[j].mac,
                    hwsrc=phy.local_mac,
                    psrc=phy.local_ip4,
                    pdst=phy.remote_hosts[j].ip4,
                )

                rxs = self.send_and_expect(host, [p], phy)

                # verify packet is unchanged
                for rx in rxs:
                    self.assertEqual(p.show2(True), rx.show2(True))

        # phy to host
        for phy, host in zip(phys, hosts):
            for j in range(N_HOSTS):
                p = (
                    Ether(dst=phy.local_mac, src=phy.remote_hosts[j].mac)
                    / IP(dst=phy.local_ip4, src=phy.remote_hosts[j].ip4)
                    / UDP(sport=1234, dport=1234)
                    / Raw()
                )

                rxs = self.send_and_expect(phy, [p], host)

                # verify packet is unchanged
                for rx in rxs:
                    self.assertEqual(p.show2(True), rx.show2(True))

                # ARPs rx'd on the phy are sent to the host
                p = Ether(dst="ff:ff:ff:ff:ff:ff", src=phy.remote_hosts[j].mac) / ARP(
                    op="is-at",
                    hwsrc=phy.remote_hosts[j].mac,
                    hwdst=phy.local_mac,
                    pdst=phy.local_ip4,
                    psrc=phy.remote_hosts[j].ip4,
                )

                rxs = self.send_and_expect(phy, [p], host)

                # verify packet is unchanged
                for rx in rxs:
                    self.assertEqual(p.show2(True), rx.show2(True))

        # cleanup
        for phy in phys:
            phy.unconfig_ip4()

    def test_linux_cp_tun(self):
        """Linux CP TUN"""

        #
        # Setup
        #
        N_PKTS = 31

        # create two pairs, wihch a bunch of hots on the phys
        hosts = [self.pg4, self.pg5]
        phy = self.pg2

        phy.config_ip4()
        phy.config_ip6()
        phy.resolve_arp()
        phy.resolve_ndp()

        tun4 = VppIpIpTunInterface(
            self, phy, phy.local_ip4, phy.remote_ip4
        ).add_vpp_config()
        tun6 = VppIpIpTunInterface(
            self, phy, phy.local_ip6, phy.remote_ip6
        ).add_vpp_config()
        tuns = [tun4, tun6]

        tun4.admin_up()
        tun4.config_ip4()
        tun6.admin_up()
        tun6.config_ip6()

        pair1 = VppLcpPair(self, tuns[0], hosts[0]).add_vpp_config()
        pair2 = VppLcpPair(self, tuns[1], hosts[1]).add_vpp_config()

        self.logger.info(self.vapi.cli("sh lcp adj verbose"))
        self.logger.info(self.vapi.cli("sh lcp"))
        self.logger.info(self.vapi.cli("sh ip punt redirect"))

        #
        # Traffic Tests
        #

        # host to phy for v4
        p = IP(src=tun4.local_ip4, dst="2.2.2.2") / UDP(sport=1234, dport=1234) / Raw()

        rxs = self.send_and_expect(self.pg4, p * N_PKTS, phy)

        # verify inner packet is unchanged and has the tunnel encap
        for rx in rxs:
            self.assertEqual(rx[Ether].dst, phy.remote_mac)
            self.assertEqual(rx[IP].dst, phy.remote_ip4)
            self.assertEqual(rx[IP].src, phy.local_ip4)
            inner = IP(rx[IP].payload)
            self.assertEqual(inner.src, tun4.local_ip4)
            self.assertEqual(inner.dst, "2.2.2.2")

        # host to phy for v6
        p = IPv6(src=tun6.local_ip6, dst="2::2") / UDP(sport=1234, dport=1234) / Raw()

        rxs = self.send_and_expect(self.pg5, p * N_PKTS, phy)

        # verify inner packet is unchanged and has the tunnel encap
        for rx in rxs:
            self.assertEqual(rx[IPv6].dst, phy.remote_ip6)
            self.assertEqual(rx[IPv6].src, phy.local_ip6)
            inner = IPv6(rx[IPv6].payload)
            self.assertEqual(inner.src, tun6.local_ip6)
            self.assertEqual(inner.dst, "2::2")

        # phy to host v4
        p = (
            Ether(dst=phy.local_mac, src=phy.remote_mac)
            / IP(dst=phy.local_ip4, src=phy.remote_ip4)
            / IP(dst=tun4.local_ip4, src=tun4.remote_ip4)
            / UDP(sport=1234, dport=1234)
            / Raw()
        )

        rxs = self.send_and_expect(phy, p * N_PKTS, self.pg4)
        for rx in rxs:
            rx = IP(rx)
            self.assertEqual(rx[IP].dst, tun4.local_ip4)
            self.assertEqual(rx[IP].src, tun4.remote_ip4)

        # phy to host v6
        p = (
            Ether(dst=phy.local_mac, src=phy.remote_mac)
            / IPv6(dst=phy.local_ip6, src=phy.remote_ip6)
            / IPv6(dst=tun6.local_ip6, src=tun6.remote_ip6)
            / UDP(sport=1234, dport=1234)
            / Raw()
        )

        rxs = self.send_and_expect(phy, p * N_PKTS, self.pg5)
        for rx in rxs:
            rx = IPv6(rx)
            self.assertEqual(rx[IPv6].dst, tun6.local_ip6)
            self.assertEqual(rx[IPv6].src, tun6.remote_ip6)

        # cleanup
        phy.unconfig_ip4()
        phy.unconfig_ip6()

        tun4.unconfig_ip4()
        tun6.unconfig_ip6()


class TestLinuxCPIpsec(TemplateIpsec, TemplateIpsecItf4, IpsecTun4):
    """IPsec Interface IPv4"""

    extra_vpp_plugin_config = [
        "plugin",
        "linux_cp_plugin.so",
        "{",
        "enable",
        "}",
        "plugin",
        "linux_cp_unittest_plugin.so",
        "{",
        "enable",
        "}",
    ]

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

        self.tun_if = self.pg0
        self.pg_interfaces += self.create_pg_ip4_interfaces(range(3, 4))
        self.pg_interfaces += self.create_pg_ip6_interfaces(range(4, 5))

    def tearDown(self):
        super(TestLinuxCPIpsec, self).tearDown()

    def verify_encrypted(self, p, sa, rxs):
        decrypt_pkts = []
        for rx in rxs:
            if p.nat_header:
                self.assertEqual(rx[UDP].dport, 4500)
            self.assert_packet_checksums_valid(rx)
            self.assertEqual(len(rx) - len(Ether()), rx[IP].len)
            try:
                rx_ip = rx[IP]
                decrypt_pkt = p.vpp_tun_sa.decrypt(rx_ip)
                if not decrypt_pkt.haslayer(IP):
                    decrypt_pkt = IP(decrypt_pkt[Raw].load)
                if rx_ip.proto == socket.IPPROTO_ESP:
                    self.verify_esp_padding(sa, rx_ip[ESP].data, decrypt_pkt)
                decrypt_pkts.append(decrypt_pkt)
                self.assert_equal(decrypt_pkt.src, p.tun_if.local_ip4)
                self.assert_equal(decrypt_pkt.dst, p.tun_if.remote_ip4)
            except:
                self.logger.debug(ppp("Unexpected packet:", rx))
                try:
                    self.logger.debug(ppp("Decrypted packet:", decrypt_pkt))
                except:
                    pass
                raise
        pkts = reassemble4(decrypt_pkts)
        for pkt in pkts:
            self.assert_packet_checksums_valid(pkt)

    def verify_decrypted(self, p, rxs):
        for rx in rxs:
            rx = IP(rx)
            self.assert_equal(rx[IP].src, p.tun_if.remote_ip4)
            self.assert_equal(rx[IP].dst, p.tun_if.local_ip4)
            self.assert_packet_checksums_valid(rx)

    def gen_encrypt_pkts(self, p, sa, sw_intf, src, dst, count=1, payload_size=54):
        return [
            Ether(src=sw_intf.remote_mac, dst=sw_intf.local_mac)
            / sa.encrypt(
                IP(src=src, dst=dst)
                / UDP(sport=1111, dport=2222)
                / Raw(b"X" * payload_size)
            )
            for i in range(count)
        ]

    def test_linux_cp_ipsec4_tun(self):
        """Linux CP Ipsec TUN"""

        #
        # Setup
        #
        N_PKTS = 31

        # the pg that paris with the tunnel
        self.host = self.pg3

        # tunnel and protection setup
        p = self.ipv4_params

        self.config_network(p)
        self.config_sa_tun(p, self.pg0.local_ip4, self.pg0.remote_ip4)
        self.config_protect(p)

        pair = VppLcpPair(self, p.tun_if, self.host).add_vpp_config()

        self.logger.info(self.vapi.cli("sh int addr"))
        self.logger.info(self.vapi.cli("sh lcp"))
        self.logger.info(self.vapi.cli("sh ip punt redirect"))

        #
        # Traffic Tests
        #

        # host to phy for v4
        pkt = (
            IP(src=p.tun_if.local_ip4, dst=p.tun_if.remote_ip4)
            / UDP(sport=1234, dport=1234)
            / Raw()
        )

        rxs = self.send_and_expect(self.host, pkt * N_PKTS, self.tun_if)
        self.verify_encrypted(p, p.vpp_tun_sa, rxs)

        # phy to host for v4
        pkts = self.gen_encrypt_pkts(
            p,
            p.scapy_tun_sa,
            self.tun_if,
            src=p.tun_if.remote_ip4,
            dst=p.tun_if.local_ip4,
            count=N_PKTS,
        )
        rxs = self.send_and_expect(self.tun_if, pkts, self.host)
        self.verify_decrypted(p, rxs)

        # cleanup
        pair.remove_vpp_config()
        self.unconfig_protect(p)
        self.unconfig_sa(p)
        self.unconfig_network(p)


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