Build a dpdk development environment in centos 7

Build a dpdk development environment in centos 7

Environment: Centos 7, dpdk 16.04
Virtual Machine Software: VMWare WorkStation 10.0.1 build-1379776
CPU: 4 CPUs, one core for each CPU
Memory: 2 GB
NIC: intel Nic * 2, used for dpdk testing; another Nic is used to communicate with the host system (this must be noted)

1. Compile dpdk

Cd dpdk16.04
Make config T = x86_64-native-linuxapp-gcc
Make
After this method is compiled, a build directory is generated,

Various folders:
App: test programs, such as test and testpmd
Lib: Library File
Include: header file
Kmod: compiled modules. After compilation, I have igb_uio.ko and rte_kni.ko.

2. Load the system's UIO driver and the newly generated dpdk igb_uio driver

Modprobe uio
Insmod build/kmod/igb_uio.ko

3. allocate large page memory

mkdir -p /mnt/hugemount -t hugetblfs nodev /mnt/hugeecho 64 > /sys/devices/system/node/node0/hugepages/hugepages-2048kB/nr_hugepages

4. unbind the driver of the NIC to be used

Because the driver used by the NIC is automatically loaded when the system starts, you must first unbind the driver from the specified network port. When you bind an Eni

You can use./tools/dpdk_nic_bind.py-usage to view how to use the script. The main usage is as follows:

To display current device status:        dpdk_nic_bind.py --statusTo bind eth1 from the current driver and move to use igb_uio        dpdk_nic_bind.py --bind=igb_uio eth1To unbind 0000:01:00.0 from using any driver        dpdk_nic_bind.py -u 0000:01:00.0To bind 0000:02:00.0 and 0000:02:00.1 to the ixgbe kernel driver        dpdk_nic_bind.py -b ixgbe 02:00.0 02:00.1

5. Bind The NIC to the specified driver

You can replace the current driver with the new driver without going through Step 1:

./Tools/dpdk_nic_bind.py-B igb_uio eth1

You can also bind a new driver directly after Step 1. You can bind multiple NICs directly:

./Tools/dpdk_nic_bind.py-B igb_uio. 0. 0. 0:. 0 indicates the mac address.

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The good news is that dpdk has integrated a script/tools/setup. sh that includes compiling dpdk source code, setting environment variables such as hugepages and loading kernel modules.

Before running setup. h, you need to set the environment variable export RTE_SDK =