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
|
#!/usr/bin/python
##
## Copyright (c) 2020 Intel Corporation
##
## 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.
##
from rapid_log import RapidLog
from rapid_machine import RapidMachine
from math import ceil, log2
class RandomPortBits(object):
"""
Class to generate PROX bitmaps for random bit generation
in source & dst UPD ports to emulate mutiple flows
"""
@staticmethod
def get_bitmap(flow_number):
number_of_random_bits = ceil(log2(flow_number))
if number_of_random_bits > 30:
raise Exception("Not able to support that many flows")
# throw exeption since we need the first bit to be 1
# Otherwise, the randomization could results in all 0's
# and that might be an invalid UDP port and result in
# packets being discarded
src_number_of_random_bits = number_of_random_bits // 2
dst_number_of_random_bits = (number_of_random_bits -
src_number_of_random_bits)
src_port_bitmap = '1000000000000000'.replace ('0','X',
src_number_of_random_bits)
dst_port_bitmap = '1000000000000000'.replace ('0','X',
dst_number_of_random_bits)
return [src_port_bitmap, dst_port_bitmap, 1 << number_of_random_bits]
class RapidGeneratorMachine(RapidMachine):
"""
Class to deal with a generator PROX instance (VM, bare metal, container)
"""
def __init__(self, key, user, password, vim, rundir, resultsdir,
machine_params, configonly, ipv6):
mac_address_size = 6
ethertype_size = 2
FCS_size = 4
if ipv6:
ip_header_size = 40
self.ip_length_offset = 18
# In IPV6, the IP size is the size of the IP content
self.frame_size_minus_ip_size = (2 * mac_address_size +
ethertype_size + ip_header_size + FCS_size)
else:
ip_header_size = 20
self.ip_length_offset = 16
# In IPV4, the IP size is the size of the IP header + IP content
self.frame_size_minus_ip_size = (2 * mac_address_size +
ethertype_size + FCS_size)
self.frame_size_minus_udp_header_and_content = (2 * mac_address_size +
ethertype_size + ip_header_size + FCS_size )
udp_header_start_offset = (2 * mac_address_size + ethertype_size +
ip_header_size)
self.udp_source_port_offset = udp_header_start_offset
self.udp_dest_port_offset = udp_header_start_offset + 2
self.udp_length_offset = udp_header_start_offset + 4
self.ipv6 = ipv6
if 'bucket_size_exp' in machine_params.keys():
self.bucket_size_exp = machine_params['bucket_size_exp']
else:
self.bucket_size_exp = 11
super().__init__(key, user, password, vim, rundir, resultsdir,
machine_params, configonly)
def get_cores(self):
return (self.machine_params['gencores'] +
self.machine_params['latcores'])
def remap_all_cpus(self):
"""Convert relative cpu ids for different parameters (gencores, latcores)
"""
super().remap_all_cpus()
if self.cpu_mapping is None:
return
if 'gencores' in self.machine_params.keys():
cpus_remapped = super().remap_cpus(self.machine_params['gencores'])
RapidLog.debug('{} ({}): gencores {} remapped to {}'.format(self.name, self.ip, self.machine_params['gencores'], cpus_remapped))
self.machine_params['gencores'] = cpus_remapped
if 'latcores' in self.machine_params.keys():
cpus_remapped = super().remap_cpus(self.machine_params['latcores'])
RapidLog.debug('{} ({}): latcores {} remapped to {}'.format(self.name, self.ip, self.machine_params['latcores'], cpus_remapped))
self.machine_params['latcores'] = cpus_remapped
def generate_lua(self):
appendix = 'gencores="%s"\n'% ','.join(map(str,
self.machine_params['gencores']))
appendix = appendix + 'latcores="%s"\n'% ','.join(map(str,
self.machine_params['latcores']))
appendix = (appendix +
'bucket_size_exp="{}"\n'.format(self.bucket_size_exp))
if 'heartbeat' in self.machine_params.keys():
appendix = (appendix +
'heartbeat="%s"\n'% self.machine_params['heartbeat'])
else:
appendix = appendix + 'heartbeat="60"\n'
super().generate_lua(appendix)
def start_prox(self):
# Start the generator with the -e option so that the cores don't
# start automatically
super().start_prox('-e')
def set_generator_speed(self, speed):
# The assumption is that we only use task 0 for generating
# We should check the gen.cfg file to make sure there is only task=0
speed_per_gen_core = speed / len(self.machine_params['gencores'])
self.socket.speed(speed_per_gen_core, self.machine_params['gencores'])
def set_udp_packet_size(self, imix_frame_sizes):
# We should check the gen.cfg to make sure we only send UDP packets
# If only 1 packet size, still using the 'old' way of setting the
# packet sizes in PROX. Otherwise, using the 'new' way which
# automatically sets IP and UDP sizes. We should switch to the new way
# eventually for all cases.
if len(imix_frame_sizes) == 1:
# Frame size = PROX pkt size + 4 bytes CRC
# The set_size function takes the PROX packet size as a parameter
self.socket.set_size(self.machine_params['gencores'], 0,
imix_frame_sizes[0] - 4)
# Writing length in the ip header
self.socket.set_value(self.machine_params['gencores'], 0,
self.ip_length_offset, imix_frame_sizes[0] -
self.frame_size_minus_ip_size, 2)
# Writing length in the udp header
self.socket.set_value(self.machine_params['gencores'], 0,
self.udp_length_offset, imix_frame_sizes[0] -
self.frame_size_minus_udp_header_and_content, 2)
else:
if self.ipv6:
RapidLog.critical('IMIX not supported for IPV6')
prox_sizes = [frame_size - 4 for frame_size in imix_frame_sizes]
self.socket.set_imix(self.machine_params['gencores'], 0,
prox_sizes)
def set_flows(self, number_of_flows):
source_port, destination_port, actualflows = RandomPortBits.get_bitmap(
number_of_flows)
self.socket.set_random(self.machine_params['gencores'],0,
self.udp_source_port_offset, source_port,2)
self.socket.set_random(self.machine_params['gencores'],0,
self.udp_dest_port_offset, destination_port,2)
return actualflows
def start_gen_cores(self):
self.socket.start(self.machine_params['gencores'])
def stop_gen_cores(self):
self.socket.stop(self.machine_params['gencores'])
def start_latency_cores(self):
self.socket.start(self.machine_params['latcores'])
def stop_latency_cores(self):
self.socket.stop(self.machine_params['latcores'])
def lat_stats(self):
# Checking all tasks in the cfg file. In this way, we can have more
# latency tasks on the same core
return (self.socket.lat_stats(self.machine_params['latcores'],
self.all_tasks_for_this_cfg))
|
