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
|
#!/usr/bin/env python
import unittest
import socket
from framework import VppTestCase, VppTestRunner, running_extended_tests
from vpp_igmp import *
from scapy.packet import Raw
from scapy.layers.l2 import Ether
from scapy.layers.inet import IP
from scapy.contrib.igmpv3 import *
from scapy.contrib.igmp import *
class TestIgmp(VppTestCase):
""" IGMP Test Case """
def setUp(self):
super(TestIgmp, self).setUp()
self.create_pg_interfaces(range(2))
self.sg_list = []
self.config_list = []
self.ip_addr = []
for pg in self.pg_interfaces:
pg.admin_up()
pg.config_ip4()
pg.resolve_arp()
def tearDown(self):
for pg in self.pg_interfaces:
self.vapi.igmp_clear_interface(pg.sw_if_index)
pg.unconfig_ip4()
pg.admin_down()
super(TestIgmp, self).tearDown()
def send(self, ti, pkts):
ti.add_stream(pkts)
self.pg_enable_capture(self.pg_interfaces)
self.pg_start()
def test_igmp_parse_report(self):
""" IGMP parse Membership Report """
#
# VPP acts as a router
#
self.vapi.want_igmp_events(1)
# hos sends join IGMP 'join'
p_join = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IP(src=self.pg0.remote_ip4, dst='224.0.0.22',
tos=0xc0, ttl=1,
options=IPOption(copy_flag=1, optclass=0,
option="router_alert",
length=2, value=0)) /
IGMPv3() /
IGMPv3mr(numgrp=1) /
IGMPv3gr(rtype=3, maddr="224.1.1.1", srcaddrs=["10.1.1.1"]))
self.send(self.pg0, p_join)
# search for the corresponding state created in VPP
dump = self.vapi.igmp_dump()
self.assertEqual(len(dump), 1)
self.assertEqual(dump[0].sw_if_index, self.pg0.sw_if_index)
self.assertEqual(dump[0].gaddr,
socket.inet_pton(socket.AF_INET,
"224.1.1.1"))
self.assertEqual(dump[0].saddr,
socket.inet_pton(socket.AF_INET,
"10.1.1.1"))
# VPP sends a notification that a new group has been joined
ev = self.vapi.wait_for_event(2, "igmp_event")
self.assertEqual(ev.saddr,
socket.inet_pton(socket.AF_INET,
"10.1.1.1"))
self.assertEqual(ev.gaddr,
socket.inet_pton(socket.AF_INET,
"224.1.1.1"))
self.assertEqual(ev.is_join, 1)
# host sends IGMP leave
p_leave = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IP(src=self.pg0.remote_ip4, dst='224.0.0.22', tos=0xc0) /
IGMPv3() /
IGMPv3mr(numgrp=1) /
IGMPv3gr(rtype=4, maddr="224.1.1.1", srcaddrs=["10.1.1.1"]))
self.send(self.pg0, p_leave)
# VPP sends a notification that a new group has been left
ev = self.vapi.wait_for_event(2, "igmp_event")
self.assertEqual(ev.saddr,
socket.inet_pton(socket.AF_INET,
"10.1.1.1"))
self.assertEqual(ev.gaddr,
socket.inet_pton(socket.AF_INET,
"224.1.1.1"))
self.assertEqual(ev.is_join, 0)
# state gone
dump = self.vapi.igmp_dump()
self.assertFalse(dump)
# resend the join
self.send(self.pg0, p_join)
dump = self.vapi.igmp_dump()
self.assertEqual(len(dump), 1)
self.assertEqual(dump[0].sw_if_index, self.pg0.sw_if_index)
self.assertEqual(dump[0].gaddr,
socket.inet_pton(socket.AF_INET,
"224.1.1.1"))
self.assertEqual(dump[0].saddr,
socket.inet_pton(socket.AF_INET,
"10.1.1.1"))
# IGMP block
p_block = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IP(src=self.pg0.remote_ip4, dst='224.0.0.22', tos=0xc0) /
IGMPv3() /
IGMPv3mr(numgrp=1) /
IGMPv3gr(rtype=6, maddr="224.1.1.1", srcaddrs=["10.1.1.1"]))
self.send(self.pg0, p_block)
dump = self.vapi.igmp_dump()
self.assertFalse(dump)
def verify_general_query(self, p):
ip = p[IP]
self.assertEqual(ip.dst, "224.0.0.1")
self.assertEqual(ip.proto, 2)
igmp = p[IGMPv3]
self.assertEqual(igmp.type, 0x11)
self.assertEqual(igmp.gaddr, "0.0.0.0")
def test_igmp_send_query(self):
""" IGMP send General Query """
#
# VPP acts as a router.
# Send a membership report so VPP builds state
#
p_mr = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IP(src=self.pg0.remote_ip4, dst='224.0.0.22') /
IGMPv3() /
IGMPv3mr(numgrp=1) /
IGMPv3gr(rtype=3, maddr="224.1.1.1", srcaddrs=["10.1.1.1"]))
self.send(self.pg0, p_mr)
self.logger.info(self.vapi.cli("sh igmp config"))
#
# wait for VPP to send out the General Query
#
capture = self.pg0.get_capture(1, timeout=61)
self.verify_general_query(capture[0])
#
# the state will expire in 10 more seconds
#
self.sleep(10)
self.assertFalse(self.vapi.igmp_dump())
@unittest.skipUnless(running_extended_tests(), "part of extended tests")
def test_igmp_src_exp(self):
""" IGMP per source timer """
#
# VPP Acts as a router
#
# Host join for (10.1.1.1,224.1.1.1)
p_mr1 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IP(src=self.pg0.remote_ip4, dst='224.0.0.22') /
IGMPv3() /
IGMPv3mr(numgrp=1) /
IGMPv3gr(rtype=3, maddr="224.1.1.1", srcaddrs=["10.1.1.1"]))
self.send(self.pg0, p_mr1)
# VPP (router) sends General Query
capture = self.pg0.get_capture(1, timeout=61)
self.verify_general_query(capture[0])
# host join for same G and another S: (10.1.1.2,224.1.1.1)
# therefore leaving (10.1.1.1,224.1.1.1)
p_mr2 = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IP(src=self.pg0.remote_ip4, dst='224.0.0.22') /
IGMPv3() /
IGMPv3mr(numgrp=1) /
IGMPv3gr(rtype=2, maddr="224.1.1.1", srcaddrs=["10.1.1.2"]))
self.send(self.pg0, p_mr2)
# wait for VPP to send general query
capture = self.pg0.get_capture(1, timeout=61)
self.verify_general_query(capture[0])
# host leaves (10.1.1.2,224.1.1.1)
p_l = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IP(src=self.pg0.remote_ip4, dst='224.0.0.22') /
IGMPv3() /
IGMPv3mr(numgrp=1) /
IGMPv3gr(rtype=2, maddr="224.1.1.1", srcaddrs=["10.1.1.2"]))
self.send(self.pg0, p_l)
# FIXME BUG
p_l = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IP(src=self.pg0.remote_ip4, dst='224.0.0.22') /
IGMPv3() /
IGMPv3mr(numgrp=1) /
IGMPv3gr(rtype=2, maddr="224.1.1.1", srcaddrs=["10.1.1.1"]))
self.send(self.pg0, p_l)
#
# host has left all groups, no state left.
#
self.sleep(10)
self.logger.error(self.vapi.cli("sh igmp config"))
self.assertFalse(self.vapi.igmp_dump())
def test_igmp_query_resp(self):
""" IGMP General Query response """
#
# VPP acting as a host.
# Add a listener in VPP for (10.1.1.1,244.1.1.1)
#
self.config_list.append(
VppIgmpConfig(
self, self.pg0.sw_if_index, IgmpSG(
socket.inet_pton(
socket.AF_INET, "10.1.1.1"), socket.inet_pton(
socket.AF_INET, "224.1.1.1"))))
self.config_list[0].add_vpp_config()
# verify state exists
self.assertTrue(self.vapi.igmp_dump(self.pg0.sw_if_index))
#
# Send a general query (from a router)
#
p = (Ether(dst=self.pg0.local_mac, src=self.pg0.remote_mac) /
IP(src=self.pg0.remote_ip4, dst='224.0.0.1', tos=0xc0) /
IGMPv3(type=0x11, mrcode=100) /
IGMPv3mq(gaddr="0.0.0.0"))
self.send(self.pg0, p)
#
# expect VPP to respond with a membership report for the
# (10.1.1.1, 224.1.1.1) state
#
capture = self.pg0.get_capture(1, timeout=10)
self.assertEqual(capture[0][IGMPv3].type, 0x22)
self.assertEqual(capture[0][IGMPv3mr].numgrp, 1)
self.assertEqual(capture[0][IGMPv3gr].rtype, 1)
self.assertEqual(capture[0][IGMPv3gr].numsrc, 1)
self.assertEqual(capture[0][IGMPv3gr].maddr, "224.1.1.1")
self.assertEqual(len(capture[0][IGMPv3gr].srcaddrs), 1)
self.assertEqual(capture[0][IGMPv3gr].srcaddrs[0], "10.1.1.1")
def test_igmp_listen(self):
""" IGMP listen (S,G)s """
#
# VPP acts as a host
# Add IGMP group state to multiple interfaces and validate its
# presence
#
for pg in self.pg_interfaces:
self.sg_list.append(IgmpSG(socket.inet_pton(
socket.AF_INET, "10.1.1.%d" % pg._sw_if_index),
socket.inet_pton(socket.AF_INET, "224.1.1.1")))
for pg in self.pg_interfaces:
self.config_list.append(
VppIgmpConfig(
self,
pg._sw_if_index,
self.sg_list))
self.config_list[-1].add_vpp_config()
for config in self.config_list:
dump = self.vapi.igmp_dump(config.sw_if_index)
self.assertTrue(dump)
self.assertEqual(len(dump), len(config.sg_list))
for idx, e in enumerate(dump):
self.assertEqual(e.sw_if_index, config.sw_if_index)
self.assertEqual(e.saddr, config.sg_list[idx].saddr)
self.assertEqual(e
|
