import 15.2.0 Octopus source

[ceph.git] / ceph / src / spdk / dpdk / doc / guides / mempool / octeontx.rst

..  SPDX-License-Identifier: BSD-3-Clause
    Copyright(c) 2017 Cavium, Inc

OCTEON TX FPAVF Mempool Driver
==============================

The OCTEON TX FPAVF PMD (**librte_mempool_octeontx**) is a mempool
driver for offload mempool device found in **Cavium OCTEON TX** SoC
family.

More information can be found at `Cavium, Inc Official Website
<http://www.cavium.com/OCTEON-TX_ARM_Processors.html>`_.

Features
--------

Features of the OCTEON TX FPAVF PMD are:

- 32 SR-IOV Virtual functions
- 32 Pools
- HW mempool manager

Supported OCTEON TX SoCs
------------------------

- CN83xx

Prerequisites
-------------

See :doc: `../platform/octeontx.rst` for setup information.

Pre-Installation Configuration
------------------------------

Config File Options
~~~~~~~~~~~~~~~~~~~

The following options can be modified in the ``config`` file.
Please note that enabling debugging options may affect system performance.

- ``CONFIG_RTE_MBUF_DEFAULT_MEMPOOL_OPS`` ( set to ``octeontx_fpavf``)

  Set default mempool ops to octeontx_fpavf.

- ``CONFIG_RTE_LIBRTE_OCTEONTX_MEMPOOL`` (default ``y``)

  Toggle compilation of the ``librte_mempool_octeontx`` driver.

Driver Compilation
~~~~~~~~~~~~~~~~~~

To compile the OCTEON TX FPAVF MEMPOOL PMD for Linux arm64 gcc target, run the
following ``make`` command:

.. code-block:: console

   cd <DPDK-source-directory>
   make config T=arm64-thunderx-linux-gcc


Initialization
--------------

The OCTEON TX fpavf mempool initialization similar to other mempool
drivers like ring. However user need to pass --base-virtaddr as
command line input to application example test_mempool.c application.

Example:

.. code-block:: console

    ./build/app/test -c 0xf --base-virtaddr=0x100000000000 \
                        --mbuf-pool-ops-name="octeontx_fpavf"