2. Installing DPDK from the Ports Collection
The easiest way to get up and running with the DPDK on FreeBSD is to install it from the ports collection. Details of getting and using the ports collection are documented in the FreeBSD Handbook.
2.1. Installing the DPDK FreeBSD Port
On a system with the ports collection installed in
/usr/ports, the DPDK
can be installed using the commands:
cd /usr/ports/net/dpdk make install
After the installation of the DPDK port, instructions will be printed on
how to install the kernel modules required to use the DPDK. A more
complete version of these instructions can be found in the sections
Loading the DPDK contigmem Module and Loading the DPDK nic_uio Module. Normally, lines like
those below would be added to the file
# Reserve 2 x 1G blocks of contiguous memory using contigmem driver: hw.contigmem.num_buffers=2 hw.contigmem.buffer_size=1073741824 contigmem_load="YES" # Identify NIC devices for DPDK apps to use and load nic_uio driver: hw.nic_uio.bdfs="2:0:0,2:0:1" nic_uio_load="YES"
Please ensure that the latest patches are applied to third party libraries and software to avoid any known vulnerabilities.
2.2. Compiling and Running the Example Applications
When the DPDK has been installed from the ports collection it installs
its example applications in
/usr/local/share/dpdk/examples - also accessible via
/usr/local/share/examples/dpdk. These examples can be compiled and
run as described in Compiling and Running Sample Applications. In this case, the required
environmental variables should be set as below:
To install a copy of the DPDK compiled using gcc, please download the official DPDK package from https://core.dpdk.org/download/ and install manually using the instructions given in the next chapter, Compiling the DPDK Target from Source
An example application can therefore be copied to a user’s home directory and compiled and run as below:
export RTE_SDK=/usr/local/share/dpdk export RTE_TARGET=x86_64-native-freebsd-clang cp -r /usr/local/share/dpdk/examples/helloworld . cd helloworld/ gmake CC main.o LD helloworld INSTALL-APP helloworld INSTALL-MAP helloworld.map sudo ./build//helloworld -l 0-3 EAL: Sysctl reports 8 cpus EAL: Detected 8 lcore(s) EAL: Detected 1 NUMA nodes EAL: Multi-process socket /var/run/dpdk/rte/mp_socket EAL: Selected IOVA mode 'PA' EAL: Contigmem driver has 2 buffers, each of size 1GB EAL: Mapped memory segment 0 @ 0x1040000000: physaddr:0x180000000, len 1073741824 EAL: Mapped memory segment 1 @ 0x1080000000: physaddr:0x1c0000000, len 1073741824 EAL: PCI device 0000:00:19.0 on NUMA socket 0 EAL: probe driver: 8086:153b net_e1000_em EAL: 0000:00:19.0 not managed by UIO driver, skipping EAL: PCI device 0000:01:00.0 on NUMA socket 0 EAL: probe driver: 8086:1572 net_i40e EAL: 0000:01:00.0 not managed by UIO driver, skipping EAL: PCI device 0000:01:00.1 on NUMA socket 0 EAL: probe driver: 8086:1572 net_i40e EAL: 0000:01:00.1 not managed by UIO driver, skipping EAL: PCI device 0000:01:00.2 on NUMA socket 0 EAL: probe driver: 8086:1572 net_i40e EAL: 0000:01:00.2 not managed by UIO driver, skipping EAL: PCI device 0000:01:00.3 on NUMA socket 0 EAL: probe driver: 8086:1572 net_i40e EAL: 0000:01:00.3 not managed by UIO driver, skipping hello from core 1 hello from core 2 hello from core 3 hello from core 0
To run a DPDK process as a non-root user, adjust the permissions on
/dev/uio device nodes as described in section
Running DPDK Applications Without Root Privileges
For an explanation of the command-line parameters that can be passed to an DPDK application, see section Running a Sample Application.