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
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
|
.. Copyright (c) <2011>, Intel Corporation
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in
the documentation and/or other materials provided with the
distribution.
- Neither the name of Intel Corporation nor the names of its
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
OF THE POSSIBILITY OF SUCH DAMAGE.
==================
Layer-3 Forwarding
==================
The Layer-3 Forwarding results are produced using ``l3fwd`` application.
Prerequisites
=============
1. Hardware requirements:
- For each CPU socket, each memory channel should be populated with at least 1x DIMM
- Board is populated with 4x 1GbE or 10GbE ports. Special PCIe restrictions may
be required for performance. For example, the following requirements should be
met for Intel 82599 (Niantic) NICs:
- NICs are plugged into PCIe Gen2 or Gen3 slots
- For PCIe Gen2 slots, the number of lanes should be 8x or higher
- A single port from each NIC should be used, so for 4x ports, 4x NICs should
be used
- NIC ports connected to traffic generator. It is assumed that the NIC ports
P0, P1, P2, P3 (as identified by the DPDK application) are connected to the
traffic generator ports TG0, TG1, TG2, TG3. The application-side port mask of
NIC ports P0, P1, P2, P3 is noted as PORTMASK in this section.
2. BIOS requirements:
- Intel Hyper-Threading Technology is ENABLED
- Hardware Prefetcher is DISABLED
- Adjacent Cache Line Prefetch is DISABLED
- Direct Cache Access is DISABLED
3. Linux kernel requirements:
- Linux kernel has the following features enabled: huge page support, UIO, HPET
- Appropriate number of huge pages are reserved at kernel boot time
- The IDs of the hardware threads (logical cores) per each CPU socket can be
determined by parsing the file /proc/cpuinfo. The naming convention for the
logical cores is: C{x.y.z} = hyper-thread z of physical core y of CPU socket x,
with typical values of x = 0 .. 3, y = 0 .. 7, z = 0 .. 1. Logical cores
C{0.0.1} and C{0.0.1} should be avoided while executing the test, as they are
used by the Linux kernel for running regular processes.
4. Software application requirements
5. Support igb_uio and vfio driver, if used vfio, kernel need 3.6+ and enable vt-d in bios.
When used vfio , used "modprobe vfio" and "modprobe vfio-pci" insmod vfiod driver, then used
"./tools/dpdk_nic_bind.py --bind=vfio-pci device_bus_id" to bind vfio driver to test driver.
- In LPM mode, the LPM table used for packet routing is:
|
+-------+----------------------+-----------+
|Entry #|LPM prefix (IP/length)|Output port|
+-------+----------------------+-----------+
| 0 | 10.100.0.0/24 | P1 |
+-------+----------------------+-----------+
| 1 | 10.101.0.0/24 | P1 |
+-------+----------------------+-----------+
| 2 | 11.100.0.0/24 | P2 |
+-------+----------------------+-----------+
| 3 | 11.101.0.0/24 | P2 |
+-------+----------------------+-----------+
| 4 | 12.100.0.0/24 | P3 |
+-------+----------------------+-----------+
| 5 | 12.101.0.0/24 | P3 |
+-------+----------------------+-----------+
| 6 | 13.100.0.0/24 | P4 |
+-------+----------------------+-----------+
| 7 | 13.101.0.0/24 | P4 |
+-------+----------------------+-----------+
|
- In hash mode, the hash table used for packet routing is:
|
+-------+-------------+---------+-------------+-----------+-----------+--------+
| Entry | IPv4 | IPv4 | Port | Port | L4 | Output |
| # | destination | source | destination | source | protocol | port |
| | address | address | | | | |
+-------+-------------+---------+-------------+-----------+-----------+--------+
| 0 | 10.100.0.1 | 1.2.3.4 | 10 | 1 | UDP | P1 |
+-------+-------------+---------+-------------+-----------+-----------+--------+
| 1 | 10.101.0.1 | 1.2.3.4 | 10 | 1 | UDP | P1 |
+-------+-------------+---------+-------------+-----------+-----------+--------+
| 2 | 11.100.0.1 | 1.2.3.4 | 11 | 1 | UDP | P2 |
+-------+-------------+---------+-------------+-----------+-----------+--------+
| 3 | 11.101.0.1 | 1.2.3.4 | 11 | 1 | UDP | P2 |
+-------+-------------+---------+-------------+-----------+-----------+--------+
| 4 | 12.100.0.1 | 1.2.3.4 | 12 | 1 | UDP | P3 |
+-------+-------------+---------+-------------+-----------+-----------+--------+
| 5 | 12.101.0.1 | 1.2.3.4 | 12 | 1 | UDP | P3 |
+-------+-------------+---------+-------------+-----------+-----------+--------+
| 6 | 13.100.0.1 | 1.2.3.4 | 13 | 1 | UDP | P0 |
+-------+-------------+---------+-------------+-----------+-----------+--------+
| 7 | 13.101.0.1 | 1.2.3.4 | 13 | 1 | UDP | P0 |
+-------+-------------+---------+-------------+-----------+-----------+--------+
|
5. Traffic generator requirements
The flows need to be configured and started by the traffic generator:
|
+------+---------+------------+---------+------+-------+--------+--------+
| Flow | Traffic | IPv4 | IPv4 | Port | Port | L4 | NIC RX |
| | Gen. | Src. | Dst. | Src. | Dest. | Proto. | Queue |
| | Port | Address | Address | | | | (RSS) |
+------+---------+------------+---------+------+-------+--------+--------+
| 1 | TG0 | 10.100.0.1 | 1.2.3.4 | 10 | 1 | UDP | 0 |
+------+---------+------------+---------+------+-------+--------+--------+
| 2 | TG0 | 10.101.0.1 | 1.2.3.4 | 10 | 1 | UDP | 1 |
+------+---------+------------+---------+------+-------+--------+--------+
| 3 | TG1 | 11.100.0.1 | 1.2.3.4 | 11 | 1 | UDP | 0 |
+------+---------+------------+---------+------+-------+--------+--------+
| 4 | TG1 | 11.101.0.1 | 1.2.3.4 | 11 | 1 | UDP | 1 |
+------+---------+------------+---------+------+-------+--------+--------+
| 5 | TG2 | 12.100.0.1 | 1.2.3.4 | 12 | 1 | UDP | 0 |
+------+---------+------------+---------+------+-------+--------+--------+
| 6 | TG2 | 12.101.0.1 | 1.2.3.4 | 12 | 1 | UDP | 1 |
+------+---------+------------+---------+------+-------+--------+--------+
| 7 | TG3 | 13.100.0.1 | 1.2.3.4 | 13 | 1 | UDP | 0 |
+------+---------+------------+---------+------+-------+--------+--------+
| 8 | TG3 | 13.101.0.1 | 1.2.3.4 | 13 | 1 | UDP | 1 |
+------+---------+------------+---------+------+-------+--------+--------+
|
The queue column represents the expected NIC port RX queue where the packet
should be written by the NIC hardware when RSS is enabled for that port.
Test Case: Layer-3 Forwarding (in Hash or LPM Mode)
===================================================
The following items are configured through the command line interface of the
application:
- The set of one or several RX queues to be enabled for each NIC port
- The set of logical cores to execute the packet forwarding task
- Mapping of the NIC RX queues to logical cores handling them.
The test report should provide the throughput rate measurements (in mpps
and % of the line rate for 4x NIC ports) as listed in the table below:
|
+----+---------+---------+-------------+---------+----------+------------------+------------------+
| # |Number of|Total |Number |Total |Number | Throughput Rate | Throughput Rate |
| |RX Queues|Number of|of Sockets/ |Number of|of NIX RX | LPM Mode | Hash Mode |
| |per NIC |NIC RX |Cores/Threads|Threads |Queues per+------------------+------------------+
| |Port |Queues | | |Thread | mpps | % | mpps | % |
+----+---------+---------+-------------+---------+----------+--------+---------+--------+---------+
| 1 | 1 |4 |1S/1C/1T |1 |4 | | | | |
+----+---------+---------+-------------+---------+----------+--------+---------+--------+---------+
| 2 | 1 |4 |1S/1C/2T |2 |2 | | | | |
+----+---------+---------+-------------+---------+----------+--------+---------+--------+---------+
| 3 | 1 |4 |1S/2C/1T |2 |2 | | | | |
+----+---------+---------+-------------+---------+----------+--------+---------+--------+---------+
| 4 | 1 |4 |1S/2C/2T |4 |1 | | | | |
+----+---------+---------+-------------+---------+----------+--------+---------+--------+---------+
| 5 | 1 |4 |1S/4C/1T |4 |1 | | | | |
+----+---------+---------+-------------+---------+----------+--------+---------+--------+---------+
| 6 | 1 |4 |2S/1C/1T |2 |2 | | | | |
+----+---------+---------+-------------+---------+----------+--------+---------+--------+---------+
| 7 | 1 |4 |2S/1C/2T |4 |1 | | | | |
+----+---------+---------+-------------+---------+----------+--------+---------+--------+---------+
| 8 | 1 |4 |2S/2C/1T |4 |1 | | | | |
+----+---------+---------+-------------+---------+----------+--------+---------+--------+---------+
| 9 | 2 |8 |1S/1C/1T |1 |8 | | | | |
+----+---------+---------+-------------+---------+----------+--------+---------+--------+---------+
|10 | 2 |8 |1S/1C/2T |2 |4 | | | | |
+----+---------+---------+-------------+---------+----------+--------+---------+--------+---------+
|11 | 2 |8 |1S/2C/1T |2 |4 | | | | |
+----+---------+---------+-------------+---------+----------+--------+---------+--------+---------+
|12 | 2 |8 |1S/2C/2T |4 |2 | | | | |
+----+---------+---------+-------------+---------+----------+--------+---------+--------+---------+
|13 | 2 |8 |1S/4C/1T |4 |2 | | | | |
+----+---------+---------+-------------+---------+----------+--------+---------+--------+---------+
|14 | 2 |8 |1S/4C/2T |8 |1 | | | | |
+----+---------+---------+-------------+---------+----------+--------+---------+--------+---------+
|15 | 2 |8 |2S/1C/1T |2 |4 | | | | |
+----+---------+---------+-------------+---------+----------+--------+---------+--------+---------+
|16 | 2 |8 |2S/1C/2T |4 |2 | | | | |
+----+---------+---------+-------------+---------+----------+--------+---------+--------+---------+
|17 | 2 |8 |2S/2C/1T |4 |2 | | | | |
+----+---------+---------+-------------+---------+----------+--------+---------+--------+---------+
|18 | 2 |8 |2S/2C/2T |8 |1 | | | | |
+----+---------+---------+-------------+---------+----------+--------+---------+--------+---------+
|19 | 2 |8 |2S/4C/1T |8 |1 | | | | |
+----+---------+---------+-------------+---------+----------+--------+---------+--------+---------+
|
The application command line associated with each of the above tests is
presented in the table below. The test report should present this table with
the actual command line used, replacing the PORTMASK and C{x.y.z} with their
actual values used during test execution.
|
+-----+----------------------------------------------------------------------------------------------------------------------+
| # | Command Line |
+-----+----------------------------------------------------------------------------------------------------------------------+
|1 |./l3fwd -c 0xffffff -n 3 -- -P -p PORTMASK --config '(P0,0,C{0.1.0}),(P1,0,C{0.1.0}),(P2,0,C{0.1.0}),(P3,0,C{0.1.0})' |
+-----+----------------------------------------------------------------------------------------------------------------------+
|2 |./l3fwd -c 0xffffff -n 3 -- -P -p PORTMASK --config '(P0,0,C{0.1.0}),(P1,0,C{0.1.0}),(P2,0,C{0.1.1}),(P3,0,C{0.1.1})' |
+-----+----------------------------------------------------------------------------------------------------------------------+
|3 |./l3fwd -c 0xffffff -n 3 -- -P -p PORTMASK --config '(P0,0,C{0.1.0}),(P1,0,C{0.1.0}),(P2,0,C{0.2.0}),(P3,0,C{0.2.0})' |
+-----+----------------------------------------------------------------------------------------------------------------------+
|4 |./l3fwd -c 0xffffff -n 3 -- -P -p PORTMASK --config '(P0,0,C{0.1.0}),(P1,0,C{0.1.1}),(P2,0,C{0.2.0}),(P3,0,C{0.2.1})' |
+-----+----------------------------------------------------------------------------------------------------------------------+
|5 |./l3fwd -c 0xffffff -n 3 -- -P -p PORTMASK --config '(P0,0,C{0.1.0}),(P1,0,C{0.2.0}),(P2,0,C{0.3.0}),(P3,0,C{0.4.0})' |
+-----+----------------------------------------------------------------------------------------------------------------------+
|6 |./l3fwd -c 0xffffff -n 3 -- -P -p PORTMASK --config '(P0,0,C{0.1.0}),(P1,0,C{0.1.0}),(P2,0,C{1.1.0}),(P3,0,C{1.1.0})' |
+-----+----------------------------------------------------------------------------------------------------------------------+
|7 |./l3fwd -c 0xffffff -n 3 -- -P -p PORTMASK --config '(P0,0,C{0.1.0}),(P1,0,C{0.1.1}),(P2,0,C{1.1.0}),(P3,0,C{1.1.1})' |
+-----+----------------------------------------------------------------------------------------------------------------------+
|8 |./l3fwd -c 0xffffff -n 3 -- -P -p PORTMASK --config '(P0,0,C{0.1.0}),(P1,0,C{0.2.0}),(P2,0,C{1.1.0}),(P3,0,C{1.2.0})' |
+-----+----------------------------------------------------------------------------------------------------------------------+
|9 |./l3fwd -c 0xffffff -n 3 -- -P -p PORTMASK --config '(P0,0,C{0.1.0}),(P0,1,C{0.1.0}),(P1,0,C{0.1.0}),(P1,1,C{0.1.0}), |
| |(P2,0,C{0.1.0}),(P2,1,C{0.1.0}),(P3,0,C{0.1.0}),(P3,1,C{0.1.0})' |
+-----+----------------------------------------------------------------------------------------------------------------------+
|10 |./l3fwd -c 0xffffff -n 3 -- -P -p PORTMASK --config '(P0,0,C{0.1.0}),(P0,1,C{0.1.0}),(P1,0,C{0.1.0}),(P1,1,C{0.1.0}), |
| |(P2,0,C{0.1.1}),(P2,1,C{0.1.1}),(P3,0,C{0.1.1}),(P3,1,C{0.1.1})' |
+-----+----------------------------------------------------------------------------------------------------------------------+
|11 |./l3fwd -c 0xffffff -n 3 -- -P -p PORTMASK --config '(P0,0,C{0.1.0}),(P0,1,C{0.1.0}),(P1,0,C{0.1.0}),(P1,1,C{0.1.0}), |
| |(P2,0,C{0.2.0}),(P2,1,C{0.2.0}),(P3,0,C{0.2.0}),(P3,1,C{0.2.0})' |
+-----+----------------------------------------------------------------------------------------------------------------------+
|12 |./l3fwd -c 0xffffff -n 3 -- -P -p PORTMASK --config '(P0,0,C{0.1.0}),(P0,1,C{0.1.0}),(P1,0,C{0.1.1}),(P1,1,C{0.1.1}), |
| |(P2,0,C{0.2.0}),(P2,1,C{0.2.0}),(P3,0,C{0.2.1}),(P3,1,C{0.2.1})' |
+-----+----------------------------------------------------------------------------------------------------------------------+
|13 |./l3fwd -c 0xffffff -n 3 -- -P -p PORTMASK --config '(P0,0,C{0.1.0}),(P0,1,C{0.1.0}),(P1,0,C{0.2.0}),(P1,1,C{0.2.0}), |
| |(P2,0,C{0.3.0}),(P2,1,C{0.3.0}),(P3,0,C{0.4.0}),(P3,1,C{0.4.0})' |
+-----+----------------------------------------------------------------------------------------------------------------------+
|14 |./l3fwd -c 0xffffff -n 3 -- -P -p PORTMASK --config '(P0,0,C{0.1.0}),(P0,1,C{0.1.1}),(P1,0,C{0.2.0}),(P1,1,C{0.2.1}), |
| |(P2,0,C{0.3.0}),(P2,1,C{0.3.1}),(P3,0,C{0.4.0}),(P3,1,C{0.4.1})' |
+-----+----------------------------------------------------------------------------------------------------------------------+
|15 |./l3fwd -c 0xffffff -n 3 -- -P -p PORTMASK --config '(P0,0,C{0.1.0}),(P0,1,C{0.1.0}),(P1,0,C{0.1.0}),(P1,1,C{0.1.0}), |
| |(P2,0,C{1.1.0}),(P2,1,C{1.1.0}),(P3,0,C{1.1.0}),(P3,1,C{1.1.0})' |
+-----+----------------------------------------------------------------------------------------------------------------------+
|16 |./l3fwd -c 0xffffff -n 3 -- -P -p PORTMASK --config '(P0,0,C{0.1.0}),(P0,1,C{0.1.0}),(P1,0,C{0.1.1}),(P1,1,C{0.1.1}), |
| |(P2,0,C{1.1.0}),(P2,1,C{1.1.0}),(P3,0,C{1.1.1}),(P3,1,C{1.1.1})' |
+-----+----------------------------------------------------------------------------------------------------------------------+
|17 |./l3fwd -c 0xffffff -n 3 -- -P -p PORTMASK --config '(P0,0,C{0.1.0}),(P0,1,C{0.1.0}),(P1,0,C{0.2.0}),(P1,1,C{0.2.0}), |
| |(P2,0,C{1.1.0}),(P2,1,C{1.1.0}),(P3,0,C{1.2.0}),(P3,1,C{1.2.0})' |
+-----+----------------------------------------------------------------------------------------------------------------------+
|18 |./l3fwd -c 0xffffff -n 3 -- -P -p PORTMASK --config '(P0,0,C{0.1.0}),(P0,1,C{0.1.1}),(P1,0,C{0.2.0}),(P1,1,C{0.2.1}), |
| |(P2,0,C{1.1.0}),(P2,1,C{1.1.1}),(P3,0,C{1.2.0}),(P3,1,C{1.2.1})' |
+-----+----------------------------------------------------------------------------------------------------------------------+
|19 |./l3fwd -c 0xffffff -n 3 -- -P -p PORTMASK --config '(P0,0,C{0.1.0}),(P0,1,C{0.2.0}),(P1,0,C{0.3.0}),(P1,1,C{0.4.0}), |
| |(P2,0,C{1.1.0}),(P2,1,C{1.2.0}),(P3,0,C{1.3.0}),(P3,1,C{1.4.0})' |
+-----+----------------------------------------------------------------------------------------------------------------------+
|
|
