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
|
# Copyright (c) 2021 Cisco and/or its affiliates.
#
# SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
#
# Licensed under the Apache License 2.0 or
# GNU General Public License v2.0 or later; you may not use this file
# except in compliance with one of these Licenses. You
# may obtain a copy of the Licenses at:
#
# http://www.apache.org/licenses/LICENSE-2.0
# https://www.gnu.org/licenses/old-licenses/gpl-2.0-standalone.html
#
# Note: If this file is linked with Scapy, which is GPLv2+, your use of it
# must be under GPLv2+. If at any point in the future it is no longer linked
# with Scapy (or other GPLv2+ licensed software), you are free to choose
# Apache 2.
#
# 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 - 192.168.3.255
- Destination IP address range: 20.0.0.0 - 20.0.3.255
- 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
This is a profile for PPS tests, it combines UDP connect and data transfer.
No delays, server response waits for full request.
"""
from trex.astf.api import *
from profile_trex_astf_base_class import TrafficProfileBaseClass
class TrafficProfile(TrafficProfileBaseClass):
"""Traffic profile."""
def __init__(self, **kwargs):
"""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"192.168.3.255"
self.p1_dst_start_ip = u"20.0.0.0"
self.p1_dst_end_ip = u"20.0.3.255"
self.headers_size = 42 # 14B l2 + 20B ipv4 + 8B UDP
self.udp_data = u""
self.n_data = 32 # TODO: set via input parameter
self.m_delay = 1200000 # delay 1200s (1,200,000 ms)
self.u_delay = 1000 * self.m_delay # delay 1200s (1,200,000,000 us)
self.limit = 64512
def define_profile(self):
"""Define profile to be used by advanced stateful traffic generator.
This method MUST return:
return ip_gen, templates
:returns: IP generator and profile templates for ASTFProfile().
:rtype: tuple
"""
if self.framesize == 64:
self.udp_data += self._gen_padding(self.headers_size, 72)
if self.framesize == 1518:
self.udp_data += self._gen_padding(self.headers_size, 1514)
# Client program.
prog_c = ASTFProgram(stream=False)
prog_c.set_keepalive_msg(self.m_delay)
prog_c.send_msg(self.udp_data)
# No delay, PPS tests combine connect and data send (no data receive).
prog_c.set_var(u"var1", self.n_data)
prog_c.set_label(u"a:")
prog_c.send_msg(self.udp_data)
prog_c.jmp_nz(u"var1", u"a:")
# We should read the server response,
# but no reason to overload client workers even more.
# Server program.
prog_s = ASTFProgram(stream=False)
prog_s.set_keepalive_msg(self.m_delay)
# If server closes too soon, new instances are started
# leading in too much replies. To prevent that, we need to recv all.
prog_s.recv_msg(1 + self.n_data)
# In packet loss scenarios, some instances never get here.
# This maybe increases server traffic duration,
# but no other way if we want to avoid
# TRex creating a second instance of the same server.
prog_s.send_msg(self.udp_data)
prog_s.set_var(u"var2", self.n_data)
prog_s.set_label(u"b:")
prog_s.send_msg(self.udp_data)
prog_s.jmp_nz(u"var2", u"b:")
# VPP never duplicates packets,
# so it is safe to close the server instance now.
# 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=self.limit,
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()
|
