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.
Testing has been performed using FreeBSD 10.0-RELEASE (x86_64) and requires the installation of the kernel sources, which should be included during the installation of FreeBSD.
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"
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 http://dpdk.org/ 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-bsdapp-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 -n 2 EAL: Contigmem driver has 2 buffers, each of size 1GB EAL: Sysctl reports 8 cpus EAL: Detected lcore 0 EAL: Detected lcore 1 EAL: Detected lcore 2 EAL: Detected lcore 3 EAL: Support maximum 64 logical core(s) by configuration. EAL: Detected 4 lcore(s) EAL: Setting up physically contiguous memory... EAL: Mapped memory segment 1 @ 0x802400000: len 1073741824 EAL: Mapped memory segment 2 @ 0x842400000: len 1073741824 EAL: WARNING: clock_gettime cannot use CLOCK_MONOTONIC_RAW and HPET is not available - clock timings may be less accurate. EAL: TSC frequency is ~3569023 KHz EAL: PCI scan found 24 devices EAL: Master core 0 is ready (tid=0x802006400) EAL: Core 1 is ready (tid=0x802006800) EAL: Core 3 is ready (tid=0x802007000) EAL: Core 2 is ready (tid=0x802006c00) EAL: PCI device 0000:01:00.0 on NUMA socket 0 EAL: probe driver: 8086:10fb rte_ixgbe_pmd EAL: PCI memory mapped at 0x80074a000 EAL: PCI memory mapped at 0x8007ca000 EAL: PCI device 0000:01:00.1 on NUMA socket 0 EAL: probe driver: 8086:10fb rte_ixgbe_pmd EAL: PCI memory mapped at 0x8007ce000 EAL: PCI memory mapped at 0x80084e000 EAL: PCI device 0000:02:00.0 on NUMA socket 0 EAL: probe driver: 8086:10fb rte_ixgbe_pmd EAL: PCI memory mapped at 0x800852000 EAL: PCI memory mapped at 0x8008d2000 EAL: PCI device 0000:02:00.1 on NUMA socket 0 EAL: probe driver: 8086:10fb rte_ixgbe_pmd EAL: PCI memory mapped at 0x801b3f000 EAL: PCI memory mapped at 0x8008d6000 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.