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Neale Ranns6f631152017-10-03 08:20:21 -07001#!/usr/bin/env python
Neale Ranns6f631152017-10-03 08:20:21 -07002import unittest
3
4from framework import VppTestCase, VppTestRunner
Neale Ranns097fa662018-05-01 05:17:55 -07005from vpp_ip_route import VppIpRoute, VppRoutePath, FibPathType
Paul Vinciguerra95c0ca42019-03-28 13:07:00 -07006from vpp_l2 import L2_PORT_TYPE
7from vpp_sub_interface import L2_VTR_OP, VppDot1QSubint
Neale Ranns6f631152017-10-03 08:20:21 -07008
9from scapy.packet import Raw
Klement Sekerab9ef2732018-06-24 22:49:33 +020010from scapy.layers.l2 import Ether, Dot1Q
Neale Ranns6f631152017-10-03 08:20:21 -070011from scapy.layers.inet import IP, UDP
Neale Rannsf068c3e2018-01-03 04:18:48 -080012from socket import AF_INET, inet_pton
Neale Ranns6f631152017-10-03 08:20:21 -070013
Paul Vinciguerra4271c972019-05-14 13:25:49 -040014NUM_PKTS = 67
15
Neale Ranns6f631152017-10-03 08:20:21 -070016
17class TestDVR(VppTestCase):
Neale Ranns62fe07c2017-10-31 12:28:22 -070018 """ Distributed Virtual Router """
Neale Ranns6f631152017-10-03 08:20:21 -070019
Paul Vinciguerra7f9b7f92019-03-12 19:23:27 -070020 @classmethod
21 def setUpClass(cls):
22 super(TestDVR, cls).setUpClass()
23
24 @classmethod
25 def tearDownClass(cls):
26 super(TestDVR, cls).tearDownClass()
27
Neale Ranns6f631152017-10-03 08:20:21 -070028 def setUp(self):
29 super(TestDVR, self).setUp()
30
31 self.create_pg_interfaces(range(4))
Klement Sekerab9ef2732018-06-24 22:49:33 +020032 self.create_loopback_interfaces(1)
Neale Ranns6f631152017-10-03 08:20:21 -070033
34 for i in self.pg_interfaces:
35 i.admin_up()
36
37 self.loop0.config_ip4()
38
39 def tearDown(self):
40 for i in self.pg_interfaces:
41 i.admin_down()
42 self.loop0.unconfig_ip4()
43
44 super(TestDVR, self).tearDown()
45
Neale Ranns55d03782017-10-21 06:34:22 -070046 def assert_same_mac_addr(self, tx, rx):
47 t_eth = tx[Ether]
48 for p in rx:
49 r_eth = p[Ether]
50 self.assertEqual(t_eth.src, r_eth.src)
51 self.assertEqual(t_eth.dst, r_eth.dst)
52
53 def assert_has_vlan_tag(self, tag, rx):
54 for p in rx:
55 r_1q = p[Dot1Q]
56 self.assertEqual(tag, r_1q.vlan)
57
58 def assert_has_no_tag(self, rx):
59 for p in rx:
60 self.assertFalse(p.haslayer(Dot1Q))
61
Neale Ranns6f631152017-10-03 08:20:21 -070062 def test_dvr(self):
63 """ Distributed Virtual Router """
64
65 #
66 # A packet destined to an IP address that is L2 bridged via
67 # a non-tag interface
68 #
69 ip_non_tag_bridged = "10.10.10.10"
70 ip_tag_bridged = "10.10.10.11"
71 any_src_addr = "1.1.1.1"
72
73 pkt_no_tag = (Ether(src=self.pg0.remote_mac,
74 dst=self.loop0.local_mac) /
75 IP(src=any_src_addr,
76 dst=ip_non_tag_bridged) /
77 UDP(sport=1234, dport=1234) /
78 Raw('\xa5' * 100))
79 pkt_tag = (Ether(src=self.pg0.remote_mac,
80 dst=self.loop0.local_mac) /
81 IP(src=any_src_addr,
82 dst=ip_tag_bridged) /
83 UDP(sport=1234, dport=1234) /
84 Raw('\xa5' * 100))
85
86 #
87 # Two sub-interfaces so we can test VLAN tag push/pop
88 #
89 sub_if_on_pg2 = VppDot1QSubint(self, self.pg2, 92)
90 sub_if_on_pg3 = VppDot1QSubint(self, self.pg3, 93)
91 sub_if_on_pg2.admin_up()
92 sub_if_on_pg3.admin_up()
93
94 #
95 # Put all the interfaces into a new bridge domain
96 #
Ole Troana5b2eec2019-03-11 19:23:25 +010097 self.vapi.sw_interface_set_l2_bridge(
98 rx_sw_if_index=self.pg0.sw_if_index, bd_id=1)
99 self.vapi.sw_interface_set_l2_bridge(
100 rx_sw_if_index=self.pg1.sw_if_index, bd_id=1)
101 self.vapi.sw_interface_set_l2_bridge(
102 rx_sw_if_index=sub_if_on_pg2.sw_if_index, bd_id=1)
103 self.vapi.sw_interface_set_l2_bridge(
104 rx_sw_if_index=sub_if_on_pg3.sw_if_index, bd_id=1)
105 self.vapi.sw_interface_set_l2_bridge(
106 rx_sw_if_index=self.loop0.sw_if_index, bd_id=1,
107 port_type=L2_PORT_TYPE.BVI)
Neale Ranns6f631152017-10-03 08:20:21 -0700108
Ole Troane1ade682019-03-04 23:55:43 +0100109 self.vapi.l2_interface_vlan_tag_rewrite(
Ole Troana5b2eec2019-03-11 19:23:25 +0100110 sw_if_index=sub_if_on_pg2.sw_if_index, vtr_op=L2_VTR_OP.L2_POP_1,
111 push_dot1q=92)
Ole Troane1ade682019-03-04 23:55:43 +0100112 self.vapi.l2_interface_vlan_tag_rewrite(
Ole Troana5b2eec2019-03-11 19:23:25 +0100113 sw_if_index=sub_if_on_pg3.sw_if_index, vtr_op=L2_VTR_OP.L2_POP_1,
114 push_dot1q=93)
Neale Ranns6f631152017-10-03 08:20:21 -0700115
Neale Ranns6f631152017-10-03 08:20:21 -0700116 #
117 # Add routes to bridge the traffic via a tagged an nontagged interface
118 #
119 route_no_tag = VppIpRoute(
120 self, ip_non_tag_bridged, 32,
121 [VppRoutePath("0.0.0.0",
122 self.pg1.sw_if_index,
Neale Ranns097fa662018-05-01 05:17:55 -0700123 type=FibPathType.FIB_PATH_TYPE_DVR)])
Neale Ranns6f631152017-10-03 08:20:21 -0700124 route_no_tag.add_vpp_config()
125
126 #
127 # Inject the packet that arrives and leaves on a non-tagged interface
128 # Since it's 'bridged' expect that the MAC headed is unchanged.
129 #
Paul Vinciguerra4271c972019-05-14 13:25:49 -0400130 rx = self.send_and_expect(self.pg0, pkt_no_tag * NUM_PKTS, self.pg1)
Neale Rannsf068c3e2018-01-03 04:18:48 -0800131 self.assert_same_mac_addr(pkt_no_tag, rx)
132 self.assert_has_no_tag(rx)
Neale Ranns6f631152017-10-03 08:20:21 -0700133
134 #
135 # Add routes to bridge the traffic via a tagged interface
136 #
Neale Ranns55d03782017-10-21 06:34:22 -0700137 route_with_tag = VppIpRoute(
Neale Ranns6f631152017-10-03 08:20:21 -0700138 self, ip_tag_bridged, 32,
139 [VppRoutePath("0.0.0.0",
140 sub_if_on_pg3.sw_if_index,
Neale Ranns097fa662018-05-01 05:17:55 -0700141 type=FibPathType.FIB_PATH_TYPE_DVR)])
Neale Ranns55d03782017-10-21 06:34:22 -0700142 route_with_tag.add_vpp_config()
Neale Ranns6f631152017-10-03 08:20:21 -0700143
144 #
Neale Rannsf068c3e2018-01-03 04:18:48 -0800145 # Inject the packet that arrives non-tag and leaves on a tagged
146 # interface
Neale Ranns6f631152017-10-03 08:20:21 -0700147 #
Paul Vinciguerra4271c972019-05-14 13:25:49 -0400148 rx = self.send_and_expect(self.pg0, pkt_tag * NUM_PKTS, self.pg3)
Neale Ranns55d03782017-10-21 06:34:22 -0700149 self.assert_same_mac_addr(pkt_tag, rx)
150 self.assert_has_vlan_tag(93, rx)
Neale Ranns6f631152017-10-03 08:20:21 -0700151
152 #
153 # Tag to tag
154 #
155 pkt_tag_to_tag = (Ether(src=self.pg2.remote_mac,
156 dst=self.loop0.local_mac) /
157 Dot1Q(vlan=92) /
158 IP(src=any_src_addr,
159 dst=ip_tag_bridged) /
160 UDP(sport=1234, dport=1234) /
161 Raw('\xa5' * 100))
162
Paul Vinciguerra4271c972019-05-14 13:25:49 -0400163 rx = self.send_and_expect(self.pg2,
164 pkt_tag_to_tag * NUM_PKTS,
165 self.pg3)
Neale Ranns55d03782017-10-21 06:34:22 -0700166 self.assert_same_mac_addr(pkt_tag_to_tag, rx)
167 self.assert_has_vlan_tag(93, rx)
Neale Ranns6f631152017-10-03 08:20:21 -0700168
169 #
170 # Tag to non-Tag
171 #
172 pkt_tag_to_non_tag = (Ether(src=self.pg2.remote_mac,
173 dst=self.loop0.local_mac) /
174 Dot1Q(vlan=92) /
175 IP(src=any_src_addr,
176 dst=ip_non_tag_bridged) /
177 UDP(sport=1234, dport=1234) /
178 Raw('\xa5' * 100))
179
Paul Vinciguerra4271c972019-05-14 13:25:49 -0400180 rx = self.send_and_expect(self.pg2,
181 pkt_tag_to_non_tag * NUM_PKTS,
182 self.pg1)
Neale Ranns55d03782017-10-21 06:34:22 -0700183 self.assert_same_mac_addr(pkt_tag_to_tag, rx)
184 self.assert_has_no_tag(rx)
Neale Ranns6f631152017-10-03 08:20:21 -0700185
Neale Ranns55d03782017-10-21 06:34:22 -0700186 #
Neale Rannsf068c3e2018-01-03 04:18:48 -0800187 # Add an output L3 ACL that will block the traffic
188 #
189 rule_1 = ({'is_permit': 0,
190 'is_ipv6': 0,
191 'proto': 17,
192 'srcport_or_icmptype_first': 1234,
193 'srcport_or_icmptype_last': 1234,
194 'src_ip_prefix_len': 32,
195 'src_ip_addr': inet_pton(AF_INET, any_src_addr),
196 'dstport_or_icmpcode_first': 1234,
197 'dstport_or_icmpcode_last': 1234,
198 'dst_ip_prefix_len': 32,
199 'dst_ip_addr': inet_pton(AF_INET, ip_non_tag_bridged)})
200 acl = self.vapi.acl_add_replace(acl_index=4294967295,
201 r=[rule_1])
202
203 #
204 # Apply the ACL on the output interface
205 #
206 self.vapi.acl_interface_set_acl_list(self.pg1.sw_if_index,
207 0,
208 [acl.acl_index])
209
210 #
211 # Send packet's that should match the ACL and be dropped
212 #
Paul Vinciguerra4271c972019-05-14 13:25:49 -0400213 rx = self.send_and_assert_no_replies(self.pg2,
214 pkt_tag_to_non_tag * NUM_PKTS)
Neale Rannsf068c3e2018-01-03 04:18:48 -0800215
216 #
Neale Ranns55d03782017-10-21 06:34:22 -0700217 # cleanup
218 #
Neale Rannsf068c3e2018-01-03 04:18:48 -0800219 self.vapi.acl_interface_set_acl_list(self.pg1.sw_if_index,
220 0, [])
221 self.vapi.acl_del(acl.acl_index)
222
Ole Troana5b2eec2019-03-11 19:23:25 +0100223 self.vapi.sw_interface_set_l2_bridge(
224 rx_sw_if_index=self.pg0.sw_if_index, bd_id=1, enable=0)
225 self.vapi.sw_interface_set_l2_bridge(
226 rx_sw_if_index=self.pg1.sw_if_index, bd_id=1, enable=0)
227 self.vapi.sw_interface_set_l2_bridge(
228 rx_sw_if_index=sub_if_on_pg2.sw_if_index, bd_id=1, enable=0)
229 self.vapi.sw_interface_set_l2_bridge(
230 rx_sw_if_index=sub_if_on_pg3.sw_if_index, bd_id=1, enable=0)
231 self.vapi.sw_interface_set_l2_bridge(
232 rx_sw_if_index=self.loop0.sw_if_index, bd_id=1,
233 port_type=L2_PORT_TYPE.BVI, enable=0)
Neale Ranns55d03782017-10-21 06:34:22 -0700234
235 #
Neale Ranns81458422018-03-12 06:59:36 -0700236 # Do a FIB dump to make sure the paths are correctly reported as DVR
237 #
Neale Ranns097fa662018-05-01 05:17:55 -0700238 routes = self.vapi.ip_route_dump(0)
Neale Ranns81458422018-03-12 06:59:36 -0700239
240 for r in routes:
Neale Ranns097fa662018-05-01 05:17:55 -0700241 if (ip_tag_bridged == str(r.route.prefix.network_address)):
242 self.assertEqual(r.route.paths[0].sw_if_index,
Neale Ranns81458422018-03-12 06:59:36 -0700243 sub_if_on_pg3.sw_if_index)
Neale Ranns097fa662018-05-01 05:17:55 -0700244 self.assertEqual(r.route.paths[0].type,
245 FibPathType.FIB_PATH_TYPE_DVR)
246 if (ip_non_tag_bridged == str(r.route.prefix.network_address)):
247 self.assertEqual(r.route.paths[0].sw_if_index,
Neale Ranns81458422018-03-12 06:59:36 -0700248 self.pg1.sw_if_index)
Neale Ranns097fa662018-05-01 05:17:55 -0700249 self.assertEqual(r.route.paths[0].type,
250 FibPathType.FIB_PATH_TYPE_DVR)
Neale Ranns81458422018-03-12 06:59:36 -0700251
252 #
Neale Ranns55d03782017-10-21 06:34:22 -0700253 # the explicit route delete is require so it happens before
254 # the sbu-interface delete. subinterface delete is required
255 # because that object type does not use the object registry
256 #
257 route_no_tag.remove_vpp_config()
258 route_with_tag.remove_vpp_config()
259 sub_if_on_pg3.remove_vpp_config()
260 sub_if_on_pg2.remove_vpp_config()
261
262 def test_l2_emulation(self):
263 """ L2 Emulation """
264
265 #
266 # non distinct L3 packets, in the tag/non-tag combos
267 #
268 pkt_no_tag = (Ether(src=self.pg0.remote_mac,
269 dst=self.pg1.remote_mac) /
270 IP(src="2.2.2.2",
271 dst="1.1.1.1") /
272 UDP(sport=1234, dport=1234) /
273 Raw('\xa5' * 100))
274 pkt_to_tag = (Ether(src=self.pg0.remote_mac,
275 dst=self.pg2.remote_mac) /
276 IP(src="2.2.2.2",
277 dst="1.1.1.2") /
278 UDP(sport=1234, dport=1234) /
279 Raw('\xa5' * 100))
280 pkt_from_tag = (Ether(src=self.pg3.remote_mac,
281 dst=self.pg2.remote_mac) /
282 Dot1Q(vlan=93) /
283 IP(src="2.2.2.2",
284 dst="1.1.1.1") /
285 UDP(sport=1234, dport=1234) /
286 Raw('\xa5' * 100))
287 pkt_from_to_tag = (Ether(src=self.pg3.remote_mac,
288 dst=self.pg2.remote_mac) /
289 Dot1Q(vlan=93) /
290 IP(src="2.2.2.2",
291 dst="1.1.1.2") /
292 UDP(sport=1234, dport=1234) /
293 Raw('\xa5' * 100))
294 pkt_bcast = (Ether(src=self.pg0.remote_mac,
295 dst="ff:ff:ff:ff:ff:ff") /
296 IP(src="2.2.2.2",
297 dst="255.255.255.255") /
298 UDP(sport=1234, dport=1234) /
299 Raw('\xa5' * 100))
300
301 #
302 # A couple of sub-interfaces for tags
303 #
304 sub_if_on_pg2 = VppDot1QSubint(self, self.pg2, 92)
305 sub_if_on_pg3 = VppDot1QSubint(self, self.pg3, 93)
306 sub_if_on_pg2.admin_up()
307 sub_if_on_pg3.admin_up()
308
309 #
310 # Put all the interfaces into a new bridge domain
311 #
Ole Troana5b2eec2019-03-11 19:23:25 +0100312 self.vapi.sw_interface_set_l2_bridge(
313 rx_sw_if_index=self.pg0.sw_if_index, bd_id=1)
314 self.vapi.sw_interface_set_l2_bridge(
315 rx_sw_if_index=self.pg1.sw_if_index, bd_id=1)
316 self.vapi.sw_interface_set_l2_bridge(
317 rx_sw_if_index=sub_if_on_pg2.sw_if_index, bd_id=1)
318 self.vapi.sw_interface_set_l2_bridge(
319 rx_sw_if_index=sub_if_on_pg3.sw_if_index, bd_id=1)
Ole Troane1ade682019-03-04 23:55:43 +0100320 self.vapi.l2_interface_vlan_tag_rewrite(
Ole Troana5b2eec2019-03-11 19:23:25 +0100321 sw_if_index=sub_if_on_pg2.sw_if_index, vtr_op=L2_VTR_OP.L2_POP_1,
322 push_dot1q=92)
Ole Troane1ade682019-03-04 23:55:43 +0100323 self.vapi.l2_interface_vlan_tag_rewrite(
Ole Troana5b2eec2019-03-11 19:23:25 +0100324 sw_if_index=sub_if_on_pg3.sw_if_index, vtr_op=L2_VTR_OP.L2_POP_1,
325 push_dot1q=93)
Neale Ranns55d03782017-10-21 06:34:22 -0700326
327 #
Paul Vinciguerra8feeaff2019-03-27 11:25:48 -0700328 # Disable UU flooding, learning and ARP termination. makes this test
Neale Ranns55d03782017-10-21 06:34:22 -0700329 # easier as unicast packets are dropped if not extracted.
330 #
Ole Troana5b2eec2019-03-11 19:23:25 +0100331 self.vapi.bridge_flags(bd_id=1, is_set=0,
332 flags=(1 << 0) | (1 << 3) | (1 << 4))
Neale Ranns55d03782017-10-21 06:34:22 -0700333
334 #
335 # Add a DVR route to steer traffic at L3
336 #
Neale Ranns097fa662018-05-01 05:17:55 -0700337 route_1 = VppIpRoute(
338 self, "1.1.1.1", 32,
339 [VppRoutePath("0.0.0.0",
340 self.pg1.sw_if_index,
341 type=FibPathType.FIB_PATH_TYPE_DVR)])
342 route_2 = VppIpRoute(
343 self, "1.1.1.2", 32,
344 [VppRoutePath("0.0.0.0",
345 sub_if_on_pg2.sw_if_index,
346 type=FibPathType.FIB_PATH_TYPE_DVR)])
Neale Ranns55d03782017-10-21 06:34:22 -0700347 route_1.add_vpp_config()
348 route_2.add_vpp_config()
349
350 #
Andrey "Zed" Zaikin701625b2018-04-18 17:07:07 +0300351 # packets are dropped because bridge does not flood unknown unicast
Neale Ranns55d03782017-10-21 06:34:22 -0700352 #
353 self.send_and_assert_no_replies(self.pg0, pkt_no_tag)
354
355 #
356 # Enable L3 extraction on pgs
357 #
Ole Troane1ade682019-03-04 23:55:43 +0100358 self.vapi.l2_emulation(self.pg0.sw_if_index)
359 self.vapi.l2_emulation(self.pg1.sw_if_index)
360 self.vapi.l2_emulation(sub_if_on_pg2.sw_if_index)
361 self.vapi.l2_emulation(sub_if_on_pg3.sw_if_index)
Neale Ranns55d03782017-10-21 06:34:22 -0700362
363 #
364 # now we expect the packet forward according to the DVR route
365 #
Paul Vinciguerra4271c972019-05-14 13:25:49 -0400366 rx = self.send_and_expect(self.pg0, pkt_no_tag * NUM_PKTS, self.pg1)
Neale Ranns55d03782017-10-21 06:34:22 -0700367 self.assert_same_mac_addr(pkt_no_tag, rx)
368 self.assert_has_no_tag(rx)
369
Paul Vinciguerra4271c972019-05-14 13:25:49 -0400370 rx = self.send_and_expect(self.pg0, pkt_to_tag * NUM_PKTS, self.pg2)
Neale Ranns55d03782017-10-21 06:34:22 -0700371 self.assert_same_mac_addr(pkt_to_tag, rx)
372 self.assert_has_vlan_tag(92, rx)
373
Paul Vinciguerra4271c972019-05-14 13:25:49 -0400374 rx = self.send_and_expect(self.pg3, pkt_from_tag * NUM_PKTS, self.pg1)
Neale Ranns55d03782017-10-21 06:34:22 -0700375 self.assert_same_mac_addr(pkt_from_tag, rx)
376 self.assert_has_no_tag(rx)
377
Paul Vinciguerra4271c972019-05-14 13:25:49 -0400378 rx = self.send_and_expect(self.pg3,
379 pkt_from_to_tag * NUM_PKTS,
380 self.pg2)
Neale Ranns55d03782017-10-21 06:34:22 -0700381 self.assert_same_mac_addr(pkt_from_tag, rx)
382 self.assert_has_vlan_tag(92, rx)
383
384 #
385 # but broadcast packets are still flooded
386 #
387 self.send_and_expect(self.pg0, pkt_bcast * 33, self.pg2)
388
389 #
390 # cleanup
391 #
Ole Troane1ade682019-03-04 23:55:43 +0100392 self.vapi.l2_emulation(self.pg0.sw_if_index,
393 enable=0)
394 self.vapi.l2_emulation(self.pg1.sw_if_index,
395 enable=0)
396 self.vapi.l2_emulation(sub_if_on_pg2.sw_if_index,
397 enable=0)
398 self.vapi.l2_emulation(sub_if_on_pg3.sw_if_index,
399 enable=0)
Neale Ranns55d03782017-10-21 06:34:22 -0700400
Ole Troana5b2eec2019-03-11 19:23:25 +0100401 self.vapi.sw_interface_set_l2_bridge(
402 rx_sw_if_index=self.pg0.sw_if_index, bd_id=1, enable=0)
403 self.vapi.sw_interface_set_l2_bridge(
404 rx_sw_if_index=self.pg1.sw_if_index, bd_id=1, enable=0)
405 self.vapi.sw_interface_set_l2_bridge(
406 rx_sw_if_index=sub_if_on_pg2.sw_if_index, bd_id=1, enable=0)
407 self.vapi.sw_interface_set_l2_bridge(
408 rx_sw_if_index=sub_if_on_pg3.sw_if_index, bd_id=1, enable=0)
Neale Ranns55d03782017-10-21 06:34:22 -0700409
410 route_1.remove_vpp_config()
411 route_2.remove_vpp_config()
412 sub_if_on_pg3.remove_vpp_config()
413 sub_if_on_pg2.remove_vpp_config()
414
Neale Ranns6f631152017-10-03 08:20:21 -0700415
416if __name__ == '__main__':
417 unittest.main(testRunner=VppTestRunner)