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
|
# 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.
"""Traffic profile for T-rex advanced stateful (astf) traffic generator.
Traffic profile:
- Two streams sent in directions 0 --> 1 (client -> server, requests) and
1 --> 0 (server -> client, responses) at the same time.
- Packet: ETH / IP / UDP
- Direction 0 --> 1:
- Source IP address range: 192.168.0.0 - 192.168.255.255
- Destination IP address range: 20.0.0.0 - 20.0.255.255
- Direction 1 --> 0:
- Source IP address range: destination IP address from packet received
on port 1
- Destination IP address range: source IP address from packet received
on port 1
"""
from trex.astf.api import *
from profile_trex_astf_base_class import TrafficProfileBaseClass
class TrafficProfile(TrafficProfileBaseClass):
"""Traffic profile."""
def __init__(self):
"""Initialization and setting of profile parameters."""
super(TrafficProfileBaseClass, self).__init__()
# IPs used in packet headers.
self.p1_src_start_ip = u"192.168.0.0"
self.p1_src_end_ip = u"192.168.255.255"
self.p1_dst_start_ip = u"20.0.0.0"
self.p1_dst_end_ip = u"20.0.255.255"
# UDP messages
self.udp_req = u"GET"
self.udp_res = u"ACK"
# Headers length
self.headers_size = 42 # 14B l2 + 20B ipv4 + 8B udp
# Required UDP keepalive value for T-Rex
self.udp_keepalive = 2000 # 2s (2,000 msec)
def define_profile(self):
"""Define profile to be used by advanced stateful traffic generator.
This method MUST return:
return ip_gen, templates, None
:returns: IP generator and profile templates ASTFProfile().
:rtype: tuple
"""
self.udp_req += self._gen_padding(self.headers_size + len(self.udp_req))
self.udp_res += self._gen_padding(self.headers_size + len(self.udp_res))
# client commands
prog_c = ASTFProgram(stream=False)
# set the keepalive timer for UDP flows to not close udp session
# immediately after packet exchange
prog_c.set_keepalive_msg(self.udp_keepalive)
# send REQ message
prog_c.send_msg(self.udp_req)
# receive RES message
prog_c.recv_msg(1)
# server commands
prog_s = ASTFProgram(stream=False)
# set the keepalive timer for UDP flows to not close udp session
# immediately after packet exchange
prog_c.set_keepalive_msg(self.udp_keepalive)
# receive REQ message
prog_s.recv_msg(1)
# send RES message
prog_s.send_msg(self.udp_res)
# ip generators
ip_gen_c = ASTFIPGenDist(
ip_range=[self.p1_src_start_ip, self.p1_src_end_ip],
distribution=u"seq"
)
ip_gen_s = ASTFIPGenDist(
ip_range=[self.p1_dst_start_ip, self.p1_dst_end_ip],
distribution=u"seq"
)
ip_gen = ASTFIPGen(
glob=ASTFIPGenGlobal(ip_offset=u"0.0.0.1"),
dist_client=ip_gen_c,
dist_server=ip_gen_s
)
# server association
s_assoc = ASTFAssociation(rules=ASTFAssociationRule(port=8080))
# template
temp_c = ASTFTCPClientTemplate(
program=prog_c,
ip_gen=ip_gen,
limit=4128768, # TODO: set via input parameter ?
port=8080
)
temp_s = ASTFTCPServerTemplate(program=prog_s, assoc=s_assoc)
template = ASTFTemplate(client_template=temp_c, server_template=temp_s)
return ip_gen, template, None
def register():
"""Register this traffic profile to T-Rex.
Do not change this function.
:return: Traffic Profiles.
:rtype: Object
"""
return TrafficProfile()
|
