DPDK环境搭建及Helloworld样例

配置虚拟机环境

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• 多张网卡，一张网卡是没法运行DPDK的，至少要两张。
• 多核CPU，能够在实现多个DPDK逻辑调度核lcore。

• DPDK依赖参考：http://www.cnblogs.com/vancasola/p/8881197.html

安装DPDK

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1.在DPDK官网下载DPDK的压缩包：http://core.dpdk.org/download, 我下载的是稳定版本18.05.1.
2.进入root权限，解压下载的安装包到用户目录下。

tar xJf ddpdk-stable-18.05.1.tar.xz
cd dpdk-stable-18.05.1/

3.配置环境变量

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

4.安装

make

运行DPDK

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1.设置环境变量

export RTE_SDK=/home/liuhy/dpdk-stable-18.05.1/
export RTE_TARGET=build

2.编译example程序

make -C examples

3.配置大页表

mkdir -p /mnt/huge
mount -t hugetlbfs nodev /mnt/huge
echo 64 > /sys/devices/system/node/node0/hugepages/hugepages-2048kB/nr_hugepages

4.运行helloworld，效果以下：

root@liuhy-VirtualBox:/home/liuhy/dpdk-stable-18.05.1/examples/helloworld/build# ./helloworld -c f
EAL: Detected 4 lcore(s)
EAL: Detected 1 NUMA nodes
EAL: Multi-process socket /var/run/dpdk/rte/mp_socket
EAL: Probing VFIO support...
EAL: PCI device 0000:00:03.0 on NUMA socket -1
EAL:   Invalid NUMA socket, default to 0
EAL:   probe driver: 8086:100e net_e1000_em
EAL: PCI device 0000:00:08.0 on NUMA socket -1
EAL:   Invalid NUMA socket, default to 0
EAL:   probe driver: 8086:100e net_e1000_em
EAL: PCI device 0000:00:09.0 on NUMA socket -1
EAL:   Invalid NUMA socket, default to 0
EAL:   probe driver: 8086:100e net_e1000_em
EAL: PCI device 0000:00:0a.0 on NUMA socket -1
EAL:   Invalid NUMA socket, default to 0
EAL:   probe driver: 8086:100e net_e1000_em
hello from core 1
hello from core 2
hello from core 3
hello from core 0