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
|
# 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:
- Source IP address range: 10.0.0.1
- Destination IP address range: 20.0.0.0 - 20.0.1.143
- Direction 1 --> 0:
- Source IP address range: 20.0.0.1
- Destination IP address range: 10.0.0.0 - 10.0.1.143
"""
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__()
# IPs used in packet headers.
self.p1_src_start_ip = u"10.0.0.1"
self.p1_dst_start_ip = u"20.0.0.0"
self.p1_dst_end_ip = u"20.0.1.143"
self.p2_src_start_ip = u"20.0.0.1"
self.p2_dst_start_ip = u"10.0.0.0"
self.p2_dst_end_ip = u"10.0.1.143"
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() /
IP(
src=self.p1_src_start_ip,
dst=self.p1_dst_start_ip,
proto=61
)
)
# Direction 1 --> 0
base_pkt_b = (
Ether() /
IP(
src=self.p2_src_start_ip,
dst=self.p2_dst_start_ip,
proto=61
)
)
# Direction 0 --> 1
vm1 = STLScVmRaw(
[
STLVmFlowVar(
name=u"dst",
min_value=self.p1_dst_start_ip,
max_value=self.p1_dst_end_ip,
size=4,
op=u"inc"
),
STLVmWrFlowVar(
fv_name=u"dst",
pkt_offset=u"IP.dst"
),
STLVmFixIpv4(
offset=u"IP"
)
]
)
# Direction 1 --> 0
vm2 = STLScVmRaw(
[
STLVmFlowVar(
name=u"dst",
min_value=self.p2_dst_start_ip,
max_value=self.p2_dst_end_ip,
size=4,
op=u"inc"
),
STLVmWrFlowVar(
fv_name=u"dst",
pkt_offset=u"IP.dst"
),
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()
|
