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
|
#!/usr/bin/env python
from framework import VppTestCase, VppTestRunner
from vpp_udp_encap import *
from vpp_ip_route import VppIpRoute, VppRoutePath, VppIpTable, VppMplsLabel
from scapy.packet import Raw
from scapy.layers.l2 import Ether, ARP
from scapy.layers.inet import IP, UDP
from scapy.layers.inet6 import IPv6
from scapy.contrib.mpls import MPLS
class TestUdpEncap(VppTestCase):
""" UDP Encap Test Case """
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.ip6_disable()
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):
self.assertEqual(rx.src, tx[IPv6].src)
self.assertEqual(rx.dst, tx[IPv6].dst)
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 peears, v6 through the second.
#
udp_encap_0 = VppUdpEncap(self, 0,
self.pg0.local_ip4,
self.pg0.remote_ip4,
330, 440)
udp_encap_1 = VppUdpEncap(self, 1,
self.pg1.local_ip4,
self.pg1.remote_ip4,
331, 441,
table_id=1)
udp_encap_2 = VppUdpEncap(self, 2,
self.pg2.local_ip6,
self.pg2.remote_ip6,
332, 442,
table_id=2,
is_ip6=1)
udp_encap_3 = VppUdpEncap(self, 3,
self.pg3.local_ip6,
self.pg3.remote_ip6,
333, 443,
table_id=3,
is_ip6=1)
udp_encap_0.add_vpp_config()
udp_encap_1.add_vpp_config()
udp_encap_2.add_vpp_config()
udp_encap_3.add_vpp_config()
#
# Routes via each UDP encap object - all combinations of v4 and v6.
#
route_4o4 = VppIpRoute(self, "1.1.0.1", 32,
[VppRoutePath("0.0.0.0",
0xFFFFFFFF,
is_udp_encap=1,
next_hop_id=0)])
route_4o6 = VppIpRoute(self, "1.1.2.1", 32,
[VppRoutePath("0.0.0.0",
0xFFFFFFFF,
is_udp_encap=1,
next_hop_id=2)])
route_6o4 = VppIpRoute(self, "2001::1", 128,
[VppRoutePath("0.0.0.0",
0xFFFFFFFF,
is_udp_encap=1,
next_hop_id=1)],
is_ip6=1)
route_6o6 = VppIpRoute(self, "2001::3", 128,
[VppRoutePath("0.0.0.0",
0xFFFFFFFF,
is_udp_encap=1,
next_hop_id=3)],
is_ip6=1)
route_4o4.add_vpp_config()
route_4o6.add_vpp_config()
route_6o6.add_vpp_config()
route_6o4.add_vpp_config()
#
# 4o4 encap
#
p_4o4 = (Ether(src=self.pg0.remote_mac,
dst=self.pg0.local_mac) /
IP(src="2.2.2.2", dst="1.1.0.1") /
UDP(sport=1234, dport=1234) /
Raw('\xa5' * 100))
rx = self.send_and_expect(self.pg0, p_4o4*65, self.pg0)
for p in rx:
self.validate_outer4(p, udp_encap_0)
p = IP(p["UDP"].payload.load)
self.validate_inner4(p, p_4o4)
#
# 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('\xa5' * 100))
rx = self.send_and_expect(self.pg0, p_4o6*65, 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)
#
# 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('\xa5' * 100))
rx = self.send_and_expect(self.pg0, p_6o4*65, 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)
#
# 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('\xa5' * 100))
rx = self.send_and_expect(self.pg0, p_6o6*65, 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)
#
# 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,
is_udp_encap=1,
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('\xa5' * 100))
rx = self.send_and_expect(self.pg0, p_4omo4*65, 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)
if __name__ == '__main__':
unittest.main(testRunner=VppTestRunner)
|
