dpdk之路-环境部署

dpdk实验环境部署

1、实验环境说明

vmware workstatioin 12

centos 7.5.1804

dpdk-stable-18.11.1

2、实验步骤

（1）虚拟机安装

　　http://vault.centos.org/7.5.1804/isos/x86_64/从链接下载CentOS-7-x86_64-DVD-1804.iso，安装时需要准备3张虚拟网卡，一个为上网用，另外两个是仅主机模式用于dpdk使用。内存我选择分配3G，cpu 2核。

（2）

依赖下载：
yum install -y numactl-devel*x86_64 make gcc libpcap libpcap-devel

下载内核头文件：
wget http://vault.centos.org/7.5.1804/os/x86_64/Packages/kernel-devel-3.10.0-862.el7.x86_64.rpm

安装内核头文件：
rpm -ivh kernel-devel-3.10.0-862.el7.x86_64.rpm

内核头文件链接到内核模块中
ln -fs /usr/src/kernels/3.10.0-862.el7.x86_64/ /lib/modules/3.10.0-862.el7.x86_64/build/

　（3）编译

make config T=x86_64-native-linuxapp-gcc
sed -ri 's,(PMD_PCAP=).*,1y,' build/.config
make

　（4）设置大页内存

echo 1024 > /sys/kernel/mm/hugepages/hugepages-2048kB/nr_hugepages
mkdir /mnt/huge
mount -t hugetlbfs nodev /mnt/huge

　（5）加载驱动

modprobe uio_pci_generic
modprobe uio
modprobe vfio-pci
insmod build/kmod/igb_uio.ko

　（6）查看网卡bind信息

usertools/dpdk-devbind.py --status

　

   （7）绑定网卡

ifconfig ens34 down 
ifconfig ens35 down

./usertools/dpdk-devbind.py --bind=igb_uio  02:02.0 
./usertools/dpdk-devbind.py --bind=igb_uio  02:03.0

　（8）查看绑定信息

ls /dev/uio* -l

　

  （9）编译examples

make -C examples RTE_SDK=$(pwd) RTE_TARGET=build O=$(pwd)/build/examples

　（10）运行helloworld程序

./build/examples/helloworld/build/helloworld

　　

bug修正，

进入dpdk-stable-18.11.1/

vim kernel/linux/igb_uio/igb_uio.c
将pci_intx_mask_supported(dev)代码修改为如下的
pci_intx_mask_supported(dev)||true

修改后重新执行
make

modprobe uio_pci_generic
modprobe uio
modprobe vfio-pci
rmmod igb_uio.ko

insmod build/kmod/igb_uio.ko

usertools/dpdk-devbind.py --status

./usertools/dpdk-devbind.py --bind=igb_uio  02:02.0 
./usertools/dpdk-devbind.py --bind=igb_uio  02:03.0

./build/examples/helloworld/build/helloworld

　

（11）testpmd测试程序

./build/app/testpmd -l 0-1 -n 2 -- -i

　　运行结果

[root@localhost dpdk-stable-18.11.1]# ./build/app/testpmd -l 0-1 -n 2 -- -i
EAL: Detected 2 lcore(s)
EAL: Detected 1 NUMA nodes
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: No free hugepages reported in hugepages-1048576kB
EAL: Probing VFIO support...
EAL: VFIO support initialized
EAL: PCI device 0000:02:01.0 on NUMA socket -1
EAL:   Invalid NUMA socket, default to 0
EAL:   probe driver: 8086:100f net_e1000_em
EAL: PCI device 0000:02:02.0 on NUMA socket -1
EAL:   Invalid NUMA socket, default to 0
EAL:   probe driver: 8086:100f net_e1000_em
EAL: PCI device 0000:02:03.0 on NUMA socket -1
EAL:   Invalid NUMA socket, default to 0
EAL:   probe driver: 8086:100f net_e1000_em
Interactive-mode selected
testpmd: create a new mbuf pool <mbuf_pool_socket_0>: n=155456, size=2176, socket=0
testpmd: preferred mempool ops selected: ring_mp_mc
Configuring Port 0 (socket 0)
Port 0: 00:0C:29:D3:37:3B
Configuring Port 1 (socket 0)
Port 1: 00:0C:29:D3:37:45
Checking link statuses...
Done
testpmd> start                                         //start后，等个10s,再执行stop
io packet forwarding - ports=2 - cores=1 - streams=2 - NUMA support enabled, MP allocation mode: native
Logical Core 1 (socket 0) forwards packets on 2 streams:
  RX P=0/Q=0 (socket 0) -> TX P=1/Q=0 (socket 0) peer=02:00:00:00:00:01
  RX P=1/Q=0 (socket 0) -> TX P=0/Q=0 (socket 0) peer=02:00:00:00:00:00

  io packet forwarding packets/burst=32
  nb forwarding cores=1 - nb forwarding ports=2
  port 0: RX queue number: 1 Tx queue number: 1
    Rx offloads=0x0 Tx offloads=0x0
    RX queue: 0
      RX desc=256 - RX free threshold=0
      RX threshold registers: pthresh=0 hthresh=0  wthresh=0
      RX Offloads=0x0
    TX queue: 0
      TX desc=256 - TX free threshold=0
      TX threshold registers: pthresh=0 hthresh=0  wthresh=0
      TX offloads=0x0 - TX RS bit threshold=0
  port 1: RX queue number: 1 Tx queue number: 1
    Rx offloads=0x0 Tx offloads=0x0
    RX queue: 0
      RX desc=256 - RX free threshold=0
      RX threshold registers: pthresh=0 hthresh=0  wthresh=0
      RX Offloads=0x0
    TX queue: 0
      TX desc=256 - TX free threshold=0
      TX threshold registers: pthresh=0 hthresh=0  wthresh=0
      TX offloads=0x0 - TX RS bit threshold=0
testpmd> stop
Telling cores to stop...
Waiting for lcores to finish...

  ---------------------- Forward statistics for port 0  ----------------------
  RX-packets: 3087933        RX-dropped: 0             RX-total: 3087933
  TX-packets: 3273024        TX-dropped: 0             TX-total: 3273024
  ----------------------------------------------------------------------------

  ---------------------- Forward statistics for port 1  ----------------------
  RX-packets: 3273028        RX-dropped: 0             RX-total: 3273028
  TX-packets: 3087929        TX-dropped: 0             TX-total: 3087929
  ----------------------------------------------------------------------------

  +++++++++++++++ Accumulated forward statistics for all ports+++++++++++++++
  RX-packets: 6360961        RX-dropped: 0             RX-total: 6360961
  TX-packets: 6360953        TX-dropped: 0             TX-total: 6360953
  ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

Done.
testpmd> quit

Stopping port 0...
Stopping ports...
Done

Stopping port 1...
Stopping ports...
Done

Shutting down port 0...
Closing ports...
Done

Shutting down port 1...
Closing ports...
Done

Bye...