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gerrit.nordix.org / fdio / vpp / 0e8cb6c475b616a3296b08d25bcaa1eed3ab0084 / . / test / test_dvr.py
blob: e7b68db2ac7f214190cc71def9b21f981a935074 [file] [log] [blame]
Neale Ranns6f631152017-10-03 08:20:21 -0700[diff] [blame]1#!/usr/bin/env python
2import random
3import socket
4import unittest
5
6from framework import VppTestCase, VppTestRunner
7from vpp_sub_interface import VppSubInterface, VppDot1QSubint
Neale Ranns55d03782017-10-21 06:34:22 -0700[diff] [blame]8from vpp_ip_route import VppIpRoute, VppRoutePath, DpoProto, VppIpMRoute, \
9 VppMRoutePath, MRouteEntryFlags, MRouteItfFlags
Neale Ranns6f631152017-10-03 08:20:21 -0700[diff] [blame]10from vpp_papi_provider import L2_VTR_OP
11
12from scapy.packet import Raw
13from scapy.layers.l2 import Ether, Dot1Q, ARP
14from scapy.layers.inet import IP, UDP
15from util import ppp
16
17
18class TestDVR(VppTestCase):
Neale Ranns62fe07c2017-10-31 12:28:22 -0700[diff] [blame]19 """ Distributed Virtual Router """
Neale Ranns6f631152017-10-03 08:20:21 -0700[diff] [blame]20
21 def setUp(self):
22 super(TestDVR, self).setUp()
23
24 self.create_pg_interfaces(range(4))
25 self.create_loopback_interfaces(range(1))
26
27 for i in self.pg_interfaces:
28 i.admin_up()
29
30 self.loop0.config_ip4()
31
32 def tearDown(self):
33 for i in self.pg_interfaces:
34 i.admin_down()
35 self.loop0.unconfig_ip4()
36
37 super(TestDVR, self).tearDown()
38
Neale Ranns55d03782017-10-21 06:34:22 -0700[diff] [blame]39 def assert_same_mac_addr(self, tx, rx):
40 t_eth = tx[Ether]
41 for p in rx:
42 r_eth = p[Ether]
43 self.assertEqual(t_eth.src, r_eth.src)
44 self.assertEqual(t_eth.dst, r_eth.dst)
45
46 def assert_has_vlan_tag(self, tag, rx):
47 for p in rx:
48 r_1q = p[Dot1Q]
49 self.assertEqual(tag, r_1q.vlan)
50
51 def assert_has_no_tag(self, rx):
52 for p in rx:
53 self.assertFalse(p.haslayer(Dot1Q))
54
Neale Ranns6f631152017-10-03 08:20:21 -0700[diff] [blame]55 def test_dvr(self):
56 """ Distributed Virtual Router """
57
58 #
59 # A packet destined to an IP address that is L2 bridged via
60 # a non-tag interface
61 #
62 ip_non_tag_bridged = "10.10.10.10"
63 ip_tag_bridged = "10.10.10.11"
64 any_src_addr = "1.1.1.1"
65
66 pkt_no_tag = (Ether(src=self.pg0.remote_mac,
67 dst=self.loop0.local_mac) /
68 IP(src=any_src_addr,
69 dst=ip_non_tag_bridged) /
70 UDP(sport=1234, dport=1234) /
71 Raw('\xa5' * 100))
72 pkt_tag = (Ether(src=self.pg0.remote_mac,
73 dst=self.loop0.local_mac) /
74 IP(src=any_src_addr,
75 dst=ip_tag_bridged) /
76 UDP(sport=1234, dport=1234) /
77 Raw('\xa5' * 100))
78
79 #
80 # Two sub-interfaces so we can test VLAN tag push/pop
81 #
82 sub_if_on_pg2 = VppDot1QSubint(self, self.pg2, 92)
83 sub_if_on_pg3 = VppDot1QSubint(self, self.pg3, 93)
84 sub_if_on_pg2.admin_up()
85 sub_if_on_pg3.admin_up()
86
87 #
88 # Put all the interfaces into a new bridge domain
89 #
90 self.vapi.sw_interface_set_l2_bridge(self.pg0.sw_if_index, 1)
91 self.vapi.sw_interface_set_l2_bridge(self.pg1.sw_if_index, 1)
92 self.vapi.sw_interface_set_l2_bridge(sub_if_on_pg2.sw_if_index, 1)
93 self.vapi.sw_interface_set_l2_bridge(sub_if_on_pg3.sw_if_index, 1)
94 self.vapi.sw_interface_set_l2_bridge(self.loop0.sw_if_index, 1, bvi=1)
95
96 self.vapi.sw_interface_set_l2_tag_rewrite(sub_if_on_pg2.sw_if_index,
97 L2_VTR_OP.L2_POP_1,
98 92)
99 self.vapi.sw_interface_set_l2_tag_rewrite(sub_if_on_pg3.sw_if_index,
100 L2_VTR_OP.L2_POP_1,
101 93)
102
Neale Ranns6f631152017-10-03 08:20:21 -0700[diff] [blame]103 #
104 # Add routes to bridge the traffic via a tagged an nontagged interface
105 #
106 route_no_tag = VppIpRoute(
107 self, ip_non_tag_bridged, 32,
108 [VppRoutePath("0.0.0.0",
109 self.pg1.sw_if_index,
110 proto=DpoProto.DPO_PROTO_ETHERNET)])
111 route_no_tag.add_vpp_config()
112
113 #
114 # Inject the packet that arrives and leaves on a non-tagged interface
115 # Since it's 'bridged' expect that the MAC headed is unchanged.
116 #
117 self.pg0.add_stream(pkt_no_tag)
118
119 self.pg_enable_capture(self.pg_interfaces)
120 self.pg_start()
121
122 rx = self.pg1.get_capture(1)
123
124 self.assertEqual(rx[0][Ether].dst, pkt_no_tag[Ether].dst)
125 self.assertEqual(rx[0][Ether].src, pkt_no_tag[Ether].src)
126
127 #
128 # Add routes to bridge the traffic via a tagged interface
129 #
Neale Ranns55d03782017-10-21 06:34:22 -0700[diff] [blame]130 route_with_tag = VppIpRoute(
Neale Ranns6f631152017-10-03 08:20:21 -0700[diff] [blame]131 self, ip_tag_bridged, 32,
132 [VppRoutePath("0.0.0.0",
133 sub_if_on_pg3.sw_if_index,
134 proto=DpoProto.DPO_PROTO_ETHERNET)])
Neale Ranns55d03782017-10-21 06:34:22 -0700[diff] [blame]135 route_with_tag.add_vpp_config()
Neale Ranns6f631152017-10-03 08:20:21 -0700[diff] [blame]136
137 #
138 # Inject the packet that arrives and leaves on a non-tagged interface
139 # Since it's 'bridged' expect that the MAC headed is unchanged.
140 #
Neale Ranns55d03782017-10-21 06:34:22 -0700[diff] [blame]141 rx = self.send_and_expect(self.pg0, pkt_tag * 65, self.pg3)
142 self.assert_same_mac_addr(pkt_tag, rx)
143 self.assert_has_vlan_tag(93, rx)
Neale Ranns6f631152017-10-03 08:20:21 -0700[diff] [blame]144
145 #
146 # Tag to tag
147 #
148 pkt_tag_to_tag = (Ether(src=self.pg2.remote_mac,
149 dst=self.loop0.local_mac) /
150 Dot1Q(vlan=92) /
151 IP(src=any_src_addr,
152 dst=ip_tag_bridged) /
153 UDP(sport=1234, dport=1234) /
154 Raw('\xa5' * 100))
155
Neale Ranns55d03782017-10-21 06:34:22 -0700[diff] [blame]156 rx = self.send_and_expect(self.pg2, pkt_tag_to_tag * 65, self.pg3)
157 self.assert_same_mac_addr(pkt_tag_to_tag, rx)
158 self.assert_has_vlan_tag(93, rx)
Neale Ranns6f631152017-10-03 08:20:21 -0700[diff] [blame]159
160 #
161 # Tag to non-Tag
162 #
163 pkt_tag_to_non_tag = (Ether(src=self.pg2.remote_mac,
164 dst=self.loop0.local_mac) /
165 Dot1Q(vlan=92) /
166 IP(src=any_src_addr,
167 dst=ip_non_tag_bridged) /
168 UDP(sport=1234, dport=1234) /
169 Raw('\xa5' * 100))
170
Neale Ranns55d03782017-10-21 06:34:22 -0700[diff] [blame]171 rx = self.send_and_expect(self.pg2, pkt_tag_to_non_tag * 65, self.pg1)
172 self.assert_same_mac_addr(pkt_tag_to_tag, rx)
173 self.assert_has_no_tag(rx)
Neale Ranns6f631152017-10-03 08:20:21 -0700[diff] [blame]174
Neale Ranns55d03782017-10-21 06:34:22 -0700[diff] [blame]175 #
176 # cleanup
177 #
178 self.vapi.sw_interface_set_l2_bridge(self.pg0.sw_if_index, 1,
179 enable=0)
180 self.vapi.sw_interface_set_l2_bridge(self.pg1.sw_if_index, 1,
181 enable=0)
182 self.vapi.sw_interface_set_l2_bridge(sub_if_on_pg2.sw_if_index,
183 1, enable=0)
184 self.vapi.sw_interface_set_l2_bridge(sub_if_on_pg3.sw_if_index,
185 1, enable=0)
186 self.vapi.sw_interface_set_l2_bridge(self.loop0.sw_if_index,
187 1, bvi=1, enable=0)
188
189 #
190 # the explicit route delete is require so it happens before
191 # the sbu-interface delete. subinterface delete is required
192 # because that object type does not use the object registry
193 #
194 route_no_tag.remove_vpp_config()
195 route_with_tag.remove_vpp_config()
196 sub_if_on_pg3.remove_vpp_config()
197 sub_if_on_pg2.remove_vpp_config()
198
199 def test_l2_emulation(self):
200 """ L2 Emulation """
201
202 #
203 # non distinct L3 packets, in the tag/non-tag combos
204 #
205 pkt_no_tag = (Ether(src=self.pg0.remote_mac,
206 dst=self.pg1.remote_mac) /
207 IP(src="2.2.2.2",
208 dst="1.1.1.1") /
209 UDP(sport=1234, dport=1234) /
210 Raw('\xa5' * 100))
211 pkt_to_tag = (Ether(src=self.pg0.remote_mac,
212 dst=self.pg2.remote_mac) /
213 IP(src="2.2.2.2",
214 dst="1.1.1.2") /
215 UDP(sport=1234, dport=1234) /
216 Raw('\xa5' * 100))
217 pkt_from_tag = (Ether(src=self.pg3.remote_mac,
218 dst=self.pg2.remote_mac) /
219 Dot1Q(vlan=93) /
220 IP(src="2.2.2.2",
221 dst="1.1.1.1") /
222 UDP(sport=1234, dport=1234) /
223 Raw('\xa5' * 100))
224 pkt_from_to_tag = (Ether(src=self.pg3.remote_mac,
225 dst=self.pg2.remote_mac) /
226 Dot1Q(vlan=93) /
227 IP(src="2.2.2.2",
228 dst="1.1.1.2") /
229 UDP(sport=1234, dport=1234) /
230 Raw('\xa5' * 100))
231 pkt_bcast = (Ether(src=self.pg0.remote_mac,
232 dst="ff:ff:ff:ff:ff:ff") /
233 IP(src="2.2.2.2",
234 dst="255.255.255.255") /
235 UDP(sport=1234, dport=1234) /
236 Raw('\xa5' * 100))
237
238 #
239 # A couple of sub-interfaces for tags
240 #
241 sub_if_on_pg2 = VppDot1QSubint(self, self.pg2, 92)
242 sub_if_on_pg3 = VppDot1QSubint(self, self.pg3, 93)
243 sub_if_on_pg2.admin_up()
244 sub_if_on_pg3.admin_up()
245
246 #
247 # Put all the interfaces into a new bridge domain
248 #
249 self.vapi.sw_interface_set_l2_bridge(self.pg0.sw_if_index, 1)
250 self.vapi.sw_interface_set_l2_bridge(self.pg1.sw_if_index, 1)
251 self.vapi.sw_interface_set_l2_bridge(sub_if_on_pg2.sw_if_index, 1)
252 self.vapi.sw_interface_set_l2_bridge(sub_if_on_pg3.sw_if_index, 1)
253 self.vapi.sw_interface_set_l2_tag_rewrite(sub_if_on_pg2.sw_if_index,
254 L2_VTR_OP.L2_POP_1,
255 92)
256 self.vapi.sw_interface_set_l2_tag_rewrite(sub_if_on_pg3.sw_if_index,
257 L2_VTR_OP.L2_POP_1,
258 93)
259
260 #
261 # Disable UU flooding, learning and ARM terminaation. makes this test
262 # easier as unicast packets are dropped if not extracted.
263 #
264 self.vapi.bridge_flags(1, 0, (1 << 0) | (1 << 3) | (1 << 4))
265
266 #
267 # Add a DVR route to steer traffic at L3
268 #
269 route_1 = VppIpRoute(self, "1.1.1.1", 32,
270 [VppRoutePath("0.0.0.0",
271 self.pg1.sw_if_index,
272 proto=DpoProto.DPO_PROTO_ETHERNET)])
273 route_2 = VppIpRoute(self, "1.1.1.2", 32,
274 [VppRoutePath("0.0.0.0",
275 sub_if_on_pg2.sw_if_index,
276 proto=DpoProto.DPO_PROTO_ETHERNET)])
277 route_1.add_vpp_config()
278 route_2.add_vpp_config()
279
280 #
281 # packets are dropped because bridge does not flood unkown unicast
282 #
283 self.send_and_assert_no_replies(self.pg0, pkt_no_tag)
284
285 #
286 # Enable L3 extraction on pgs
287 #
288 self.vapi.sw_interface_set_l2_emulation(self.pg0.sw_if_index)
289 self.vapi.sw_interface_set_l2_emulation(self.pg1.sw_if_index)
290 self.vapi.sw_interface_set_l2_emulation(sub_if_on_pg2.sw_if_index)
291 self.vapi.sw_interface_set_l2_emulation(sub_if_on_pg3.sw_if_index)
292
293 #
294 # now we expect the packet forward according to the DVR route
295 #
296 rx = self.send_and_expect(self.pg0, pkt_no_tag * 65, self.pg1)
297 self.assert_same_mac_addr(pkt_no_tag, rx)
298 self.assert_has_no_tag(rx)
299
300 rx = self.send_and_expect(self.pg0, pkt_to_tag * 65, self.pg2)
301 self.assert_same_mac_addr(pkt_to_tag, rx)
302 self.assert_has_vlan_tag(92, rx)
303
304 rx = self.send_and_expect(self.pg3, pkt_from_tag * 65, self.pg1)
305 self.assert_same_mac_addr(pkt_from_tag, rx)
306 self.assert_has_no_tag(rx)
307
308 rx = self.send_and_expect(self.pg3, pkt_from_to_tag * 65, self.pg2)
309 self.assert_same_mac_addr(pkt_from_tag, rx)
310 self.assert_has_vlan_tag(92, rx)
311
312 #
313 # but broadcast packets are still flooded
314 #
315 self.send_and_expect(self.pg0, pkt_bcast * 33, self.pg2)
316
317 #
318 # cleanup
319 #
320 self.vapi.sw_interface_set_l2_emulation(self.pg0.sw_if_index,
321 enable=0)
322 self.vapi.sw_interface_set_l2_emulation(self.pg1.sw_if_index,
323 enable=0)
324 self.vapi.sw_interface_set_l2_emulation(sub_if_on_pg2.sw_if_index,
325 enable=0)
326 self.vapi.sw_interface_set_l2_emulation(sub_if_on_pg3.sw_if_index,
327 enable=0)
328
329 self.vapi.sw_interface_set_l2_bridge(self.pg0.sw_if_index,
330 1, enable=0)
331 self.vapi.sw_interface_set_l2_bridge(self.pg1.sw_if_index,
332 1, enable=0)
333 self.vapi.sw_interface_set_l2_bridge(sub_if_on_pg2.sw_if_index,
334 1, enable=0)
335 self.vapi.sw_interface_set_l2_bridge(sub_if_on_pg3.sw_if_index,
336 1, enable=0)
337
338 route_1.remove_vpp_config()
339 route_2.remove_vpp_config()
340 sub_if_on_pg3.remove_vpp_config()
341 sub_if_on_pg2.remove_vpp_config()
342
Neale Ranns6f631152017-10-03 08:20:21 -0700[diff] [blame]343
344if __name__ == '__main__':
345 unittest.main(testRunner=VppTestRunner)