Pktgen-DPDK 是一个基于 DPDK 的高性能数据包生成器和网络性能测试工具，上篇文章介绍了如何编译和安装Pktgen-DPDK，本文将进一步介绍该工具的相关使用。
一、环境初始化
- 本例程以Bond双网卡为例，每当网卡切回内核态后，首次启动pktgen前需要执行，加载igb_uio模块，绑定使用网卡。
# 加载模块
modprobe uio
insmod igb_uio.ko # insmod <your igb_uio.ko path>/igb_uio.ko
# 绑定使用网卡，pci需要替换为你的
dpdk-devbind.py -b igb_uio aa:00.1
dpdk-devbind.py -b igb_uio bb:00.1|
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二、运行Pktgen
1、相关目录：
-
可执行文件目录：Pktgen-DPDK/build/app/pktgen
-
python运行脚本：Pktgen-DPDK/tools/run.py
2、运行命令：
cd /home/chenqingjian/pktgen/Pktgen-DPDK-main
# 方式一：使用run.py + 配置文件，比较便捷，以下命令会使用cfg/default.cfg配置文件中run下的参数运行pktgen
./tools/run.py default
# 方式二：直接使用pktgen，每次都要自己填写后面的参数
./build/app/pktgen <参数>|
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cfg/default.cfg内容：
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description = 'A Pktgen default simple configuration'
# Setup configuration
setup = {
'exec': (
'sudo', '-E'
),
'devices': (
'aa:00.1', 'bb:00.1'
),
# UIO module type, igb_uio, vfio-pci or uio_pci_generic
'uio': 'igb_uio'
}
# Run command and options
run = {
'exec': ('sudo', '-E'),
# Application name and use app_path to help locate the app
'app_name': 'pktgen',
# using (sdk) or (target) for specific variables
# add (app_name) of the application
# Each path is tested for the application
'app_path': (
'build/app/%(app_name)s',
),
'cores': '0,1,2,3,4,5,6,7,8,16,17,18,19,20,21,22,23',
# 0000:aa:00.1和0000:bb:00.1聚合成eth_bond0
'vdev':'eth_bond0,mode=4,xmit_policy=l34,slave=0000:aa:00.1,slave=0000:bb:00.1',
'blocklist': (
#'03:00.0', '05:00.0',
#'81:00.0', '84:00.0'
),
'allowlist': (
#'5e:00.0', '5e:00.1',
#'af:00.0', 'af:00.1'
),
'opts': (
'-v',
'-T',
'-P',
),
'map': (
# [1-4:5-8].0 表示1-4核处理port 0的rx，5-8核处理port 0的tx
'[1-4:5-8].0',
'[16-19:20-23].1',
),
'theme': 'themes/black-yellow.theme',
#'shared': '/usr/local/lib/x86_64-linux-gnu/dpdk/pmds-21.1'
}说明：
- setup内容是用于环境初始化配置的，通过./tools/run.py -s default指定运行，一般我们自己手动配置了。如果要使用该方式配置，还要设置相应的环境路径变量对应起来（RTE_SDK、RTE_TARGET），比较麻烦。
运行结果：
默认显示page main，成功根据配置文件参数执行pktgen。
三、Pktgen配置发包
1、随机发包帮助说明：
-- Setup the packet range values --
note: SMMI = start|min|max|inc (start, minimum, maximum, increment)
range <portlist> src|dst mac <SMMI> <etheraddr> - Set destination/source MAC address
e.g: range 0 src mac start 00:00:00:00:00:00
range 0 dst mac max 00:12:34:56:78:90
or range 0 src mac 00:00:00:00:00:00 00:00:00:00:00:00 00:12:34:56:78:90 00:00:00:01:01:01
range <portlist> src|dst ip <SMMI> <ipaddr> - Set source IP start address
e.g: range 0 dst ip start 0.0.0.0
range 0 dst ip min 0.0.0.0
range 0 dst ip max 1.2.3.4
range 0 dst ip inc 0.0.1.0
or range 0 dst ip 0.0.0.0 0.0.0.0 1.2.3.4 0.0.1.0
range <portlist> type ipv4|ipv6 - Set the range packet type to IPv4 or IPv6
range <portlist> proto tcp|udp - Set the IP protocol type
range <portlist> tcp flag set <flag> - Set the TCP flag
range <portlist> tcp flag clr <flag> - Clear the TCP flag
range <portlist> tcp seq <SMMI> <value> - Set the TCP sequence number
or range <portlist> tcp seq <start> <min> <max> <inc>
range <portlist> tcp ack <SMMI> <value> - Set the TCP acknowledge number
or range <portlist> tcp ack <start> <min> <max> <inc>
range <portlist> src|dst port <SMMI> <value> - Set UDP/TCP source/dest port number
or range <portlist> src|dst port <start> <min> <max> <inc>
range <portlist> vlan <SMMI> <value> - Set vlan id start address
or range <portlist> vlan <start> <min> <max> <inc>
range <portlist> size <SMMI> <value> - Set pkt size start address
or range <portlist> size <start> <min> <max> <inc>
range <portlist> teid <SMMI> <value> - Set TEID value
or range <portlist> teid <start> <min> <max> <inc>
range <portlist> mpls entry <hex-value> - Set MPLS entry value
range <portlist> qinq index <val1> <val2> - Set QinQ index values
range <portlist> gre key <value> - Set GRE key value
range <portlist> cos <SMMI> <value> - Set cos value
range <portlist> tos <SMMI> <value> - Set tos value
range <portlist> ttl <SMMI> <value> - Set TTL
range <portlist> hop_limits <SMMI> <value> - Set Hop Limits
range <portlist> traffic_class <SMMI> <value> - Set Traffic Class value2、配置示例（以port 0为例, 所有port一起配可以用all）
range 0 type ipv6
range 0 src ip 2001::1 2001::1 2001::ffff:1 ::1:0
range 0 src port 1000 1000 65534 1
range 0 dst mac start E0:28:61:cc:bb:aa
range 0 dst mac max E0:28:61:cc:bb:aa
range 0 dst ip 3001::1 3001::1 3001::ffff:1 ::1:0
range 0 dst port 5011 5011 5011 0
range 0 proto tcp
range 0 tcp flag set syn
range 0 size 64 64 64 0
enable 0 range|
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查看range配置
page range开始发包
page main
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