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 at:
Note
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*.
On a system with the ports collection installed in /usr/ports, the DPDK can be installed using the commands:
root@host:~ # cd /usr/ports/net/dpdk
root@host:~ # 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 “/boot/loader.conf”.
# 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"
When the DPDK has been installed from the ports collection it installs its example applications in “/usr/local/share/dpdk/examples” - also accessible via symlink as “/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:
Note
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:
user@host:~$ export RTE_SDK=/usr/local/share/dpdk
user@host:~$ export RTE_TARGET=x86_64-native-bsdapp-clang
user@host:~$ cp -r /usr/local/share/dpdk/examples/helloworld .
user@host:~$ cd helloworld/
user@host:~/helloworld$ gmake
CC main.o
LD helloworld
INSTALL-APP helloworld
INSTALL-MAP helloworld.map
user@host:~/helloworld$ sudo ./build/helloworld -c F -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: physaddr:0x40000000, len 1073741824
EAL: Mapped memory segment 2 @ 0x842400000: physaddr:0x100000000, 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
Note
To run a DPDK process as a non-root user, adjust the permissions on the /dev/contigmem and /dev/uio device nodes as described in section Running DPDK Applications Without Root Privileges
Note
For an explanation of the command-line parameters that can be passed to an DPDK application, see section Running a Sample Application.