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
|
# Copyright (c) 2020 Cisco and/or its affiliates.
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at:
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Stream profile for T-rex traffic generator.
Stream profile:
- Two streams sent in directions 0 --> 1 and 1 --> 0 at the same time.
- Packet: ETH / IP /
- Direction 0 --> 1:
- Destination MAC address: 52:54:00:00:nf_id:01
- Source IP address range: 10.10.10.1 - 10.10.10.254
- Destination IP address range: 20.20.20.1
- Direction 1 --> 0:
- Destination MAC address: 52:54:00:00:nf_id:02
- Source IP address range: 20.20.20.1 - 20.20.20.254
- Destination IP address range: 10.10.10.1
"""
from trex.stl.api import *
from profile_trex_stateless_base_class import TrafficStreamsBaseClass
class TrafficStreams(TrafficStreamsBaseClass):
"""Stream profile."""
def __init__(self):
"""Initialization and setting of streams' parameters."""
super(TrafficStreamsBaseClass, self).__init__()
# Service density parameters.
self.nf_chains = 4
self.nf_nodes = 4
# MACs used in packet headers.
self.p1_dst_start_mac = u"52:54:00:00:00:01"
self.p2_dst_start_mac = u"52:54:00:00:00:02"
# IPs used in packet headers.
self.p1_src_start_ip = u"10.10.10.1"
self.p1_src_end_ip = u"10.10.10.254"
self.p1_dst_start_ip = u"20.20.20.1"
self.p2_src_start_ip = u"20.20.20.1"
self.p2_src_end_ip = u"20.20.20.254"
self.p2_dst_start_ip = u"10.10.10.1"
def define_packets(self):
"""Defines the packets to be sent from the traffic generator.
Packet definition: | ETH | IP |
:returns: Packets to be sent from the traffic generator.
:rtype: tuple
"""
# Direction 0 --> 1
base_pkt_a = (
Ether(
dst=self.p1_dst_start_mac
) /
IP(
src=self.p1_src_start_ip,
dst=self.p1_dst_start_ip,
proto=61
)
)
# Direction 1 --> 0
base_pkt_b = (
Ether(
dst=self.p2_dst_start_mac
) /
IP(
src=self.p2_src_start_ip,
dst=self.p2_dst_start_ip,
proto=61
)
)
# Direction 0 --> 1
vm1 = STLScVmRaw(
[
STLVmFlowVar(
name=u"mac_dst",
min_value=1,
max_value=self.nf_chains*self.nf_nodes,
size=1,
step=self.nf_nodes,
op=u"inc"
),
STLVmWrFlowVar(
fv_name=u"mac_dst",
pkt_offset=4
),
STLVmFlowVar(
name=u"src",
min_value=self.p1_src_start_ip,
max_value=self.p1_src_end_ip,
size=4,
op=u"inc"
),
STLVmWrFlowVar(
fv_name=u"src",
pkt_offset=u"IP.src"
),
STLVmFixIpv4(
offset=u"IP"
)
]
)
# Direction 1 --> 0
vm2 = STLScVmRaw(
[
STLVmFlowVar(
name=u"mac_dst",
min_value=self.nf_nodes,
max_value=self.nf_chains*self.nf_nodes,
size=1,
step=self.nf_nodes,
op=u"inc"
),
STLVmWrFlowVar(
fv_name=u"mac_dst",
pkt_offset=4
),
STLVmFlowVar(
name=u"src",
min_value=self.p2_src_start_ip,
max_value=self.p2_src_end_ip,
size=4,
op=u"inc"
),
STLVmWrFlowVar(
fv_name=u"src",
pkt_offset=u"IP.src"
),
STLVmFixIpv4(
offset=u"IP"
)
]
)
return base_pkt_a, base_pkt_b, vm1, vm2
def register():
"""Register this traffic profile to T-rex.
Do not change this function.
:return: Traffic streams.
:rtype: Object
"""
return TrafficStreams()
|
