.. _install:

Installation
============

The BNG Blaster should run on any modern Linux distribution
but is primarily tested on Ubuntu 18.04, 20.04 and 22.04 LTS.

Install Ubuntu
--------------

Install dependencies:

.. code-block:: none

    # Ubuntu 18.04 and 20.04
    sudo apt install -y libssl1.1 libncurses5 libjansson4
    # Ubuntu 22.04
    sudo apt install -y libssl3 libncurses6 libjansson4


Download and install the Debian package: https://github.com/rtbrick/bngblaster/releases

.. code-block:: none

    sudo dpkg -i <package>

This command installs the BNG Blaster to `/usr/sbin/bngblaster`.

Build from Sources
------------------

Dependencies
^^^^^^^^^^^^

The BNG Blaster has dependencies on the RtBrick
`libdict fork <https://github.com/rtbrick/libdict>`_
and the following standard dependencies:

.. code-block:: none

    # install libdict for Ubuntu 18.04 LTS
    wget https://github.com/rtbrick/libdict/releases/download/v1.0.1/libdict-debian.zip
    unzip libdict-debian.zip
    sudo dpkg -i libdict_1.0.1_amd64.deb
    sudo dpkg -i libdict-dev_1.0.1_amd64.deb

    # install libdict for Ubuntu 22.04 LTS
    wget https://github.com/rtbrick/libdict/releases/download/1.0.3/libdict-ubuntu-22.04.zip
    unzip libdict-ubuntu-22.04.zip
    sudo dpkg -i libdict_1.0.3_amd64.deb
    sudo dpkg -i libdict-dev_1.0.3_amd64.deb

    # install other dependencies
    sudo apt install -y cmake \
        libpcap-dev \
        libcunit1-dev \
        libncurses5-dev \
        libssl-dev \
        libjansson-dev

Build
^^^^^

Per default cmake (`cmake .`) will build the BNG Blaster as a release
version with optimization and without debugging symbols.

.. code-block:: none

    git clone https://github.com/rtbrick/bngblaster.git
    cd bngblaster
    mkdir build
    cd build
    cmake -DCMAKE_BUILD_TYPE=Release ..
    make all

Alternative it is also possible to build a debug
version for detailed troubleshooting using gdb.

.. code-block:: none

    mkdir build
    cd build
    cmake -DCMAKE_BUILD_TYPE=Debug ..
    make all


There are also CPack files generated which allow to easily generate a Debian
package by just executing `cpack` from the build directory.

It is also recommended to provide the GIT commit details to be included in the
manually build the version as shown below:

.. code-block:: none

    cmake -DGIT_REF=`git rev-parse --abbrev-ref HEAD` -DGIT_SHA=`git rev-parse HEAD` .

*Example:*

.. code-block:: none

    $ bngblaster -v
    GIT:
    REF: dev
    SHA: df453a5ee9dbf6440aefbfb9630fa0f06e326d44
    IO Modes: packet_mmap_raw (default), packet_mmap, raw

Install
^^^^^^^

Then BNG Blaster can be installed using the make install target.

.. code-block:: none

    sudo make install

This command installs the BNG Blaster to `/usr/sbin/bngblaster`.

Build and Run Unit Tests
^^^^^^^^^^^^^^^^^^^^^^^^

Building and running unit tests requires CMocka to be installed:

.. code-block:: none

    sudo apt install libcmocka-dev

The option `BNGBLASTER_TESTS` enables to build unit tests.

.. code-block:: none

    cmake -DCMAKE_BUILD_TYPE=Debug -DBNGBLASTER_TESTS=ON .
    make all
    make test

*Example:*

.. code-block:: none

    $ make test
    Running tests...
    Test project
        Start 1: TestProtocols
    1/1 Test #1: TestProtocols ....................   Passed    0.00 sec

    100% tests passed, 0 tests failed out of 1

    Total Test time (real) =   0.00 sec

.. _install-dpdk:

Build with DPDK Support
^^^^^^^^^^^^^^^^^^^^^^^

The following steps are required to build the BNG Blaster with experimental
:ref:`DPDK <dpdk-usage>` support. 

.. note::

    Tested with DPDK version 22.11.4 and Ubuntu 22.04 (LTS)!


Download and install DPDK:
https://doc.dpdk.org/guides/linux_gsg/build_dpdk.html

.. code-block:: none

    # install meson 
    sudo apt install meson ninja-build

    # download DPDK
    wget https://fast.dpdk.org/rel/dpdk-22.11.4.tar.xz
    tar xJf dpdk-22.11.4.tar.xz
    cd dpdk-stable-22.11.4

    # build with driver SDK
    meson -Denable_driver_sdk=true build
    cd build
    ninja

    # install 
    sudo ninja install
    sudo ldconfig

Building BNG Blaster with DPDK support works as explained before but with 
the additional cmake argument ``-DBNGBLASTER_DPDK=on``

.. code-block:: none

    cmake -DBNGBLASTER_DPDK=on ..

If DPDK is installed correctly, cmake should show the following output: 

.. code-block:: none

    -- Build bngblaster with DPDK support
    -- Found PkgConfig: /usr/bin/pkg-config (found version "1.8.0")
    -- Checking for module 'libdpdk'
    --   Found libdpdk, version 22.11.4
    -- Found DPDK via pkg-config

The installed version should now show `dpdk` as new IO mode. 

.. code-block:: none

    sudo bngblaster -v
    Version: DEV
    Compiler: GNU (11.2.0)
    IO Modes: packet_mmap_raw (default), packet_mmap, raw, dpdk


Running BNG Blaster
-------------------

The BNG Blaster needs permission to send raw packets and change network interface
settings. The easiest way to run the BNG Blaster is either as the root user or 
with `sudo`:

.. code-block:: none

    # As root
    bngblaster -C config.json -I

    # As a normal user:
    sudo bngblaster -C config.json -I


A third option is to set capabilities on the binary with for example `setcap`
as shown below:

.. code-block:: none

    sudo setcap cap_net_raw,cap_net_admin,cap_dac_read_search+eip `which bngblaster`

    # As normal user:
    bngblaster -C config.json -I