Compiling and Installing DPDK with the Napatech PMD

Build and install DPDK with the Napatech PMD.

1. Locate the DPDK directory in the unpacked Link-Virtualization™ Software package directory and change to that directory.
   For example:

   cd <package_root_directory>/dpdk-hwaccel/dpdk-hwaccel-<version>

   where:

   • package_root_directory is the directory to the unpacked Napatech package.
   • version is the version identifier of the included DPDK package with the Napatech PMD.
2. Install packages required to build DPDK.

   # Enable the powertools repository.
   subscription-manager repos --enable codeready-builder*-rpms
   
   # Install meson and ninja-build.
   dnf install meson ninja-build

3. Compile and install DPDK.

   export NTNIC_PATH=/opt/napatech3
   meson build
   ninja -C build
   ninja -C build install

   Note: /opt/napatech3 is the default driver installation path. If you have installed the driver in a different location, make sure that the NTNIC_PATH environment variable points to the correct path.
4. Set the pkgconfig path to the PKG_CONFIG_PATH environment variable. The path can be found running the following command.

   meson configure

   The path to the installed DPDK libraries is <prefix>/<libdir> where prefix and libdir can be found in the meson configure output as shown in the following example:

   ...
   Directories     Default Value    Possible Values    Description
   -----------     -------------    ---------------    -----------
   prefix          /usr/local                          Installation prefix
   ...
   libdir          lib64                               Library directory
   ...
   

   Set PKG_CONFIG_PATH.

   export PKG_CONFIG_PATH=/usr/local/lib64/pkgconfig

5. Activate the path to the libraries.

   ldconfig
   
   # Verify
   ldconfig -p | grep librte

   Note: On some Linux distributions, such as CentOS, Fedora or RHEL, paths in /usr/local are not in the default path for the dynamic loader. Therefore, add /usr/local/lib and the path to the DPDK libraries to the /etc/ld.so.conf.d/napatech3.conf file before running ldconfig on these distributions. For example:

   echo -e "/usr/local/lib64\n/usr/local/lib64/dpdk" >> \
    /etc/ld.so.conf.d/napatech3.conf

   The path to the DPDK libraries may vary depending on the Linux distribution. See step 4 about how to find the path.