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: 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...