f272ea5ba7
Updated AESNI MB and AESNI GCM, KASUMI, ZUC, SNOW3G and CHACHA20_POLY1305 PMD documentation guides with information about the latest Intel IPsec Multi-buffer library supported. Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com> Acked-by: Ciara Power <ciara.power@intel.com> Acked-by: Brian Dooley <brian.dooley@intel.com> Signed-off-by: Kai Ji <kai.ji@intel.com>
132 lines
4.4 KiB
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132 lines
4.4 KiB
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.. SPDX-License-Identifier: BSD-3-Clause
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Copyright(c) 2016-2019 Intel Corporation.
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SNOW 3G Crypto Poll Mode Driver
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===============================
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The SNOW3G PMD (**librte_crypto_snow3g**) provides poll mode crypto driver support for
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utilizing `Intel IPSec Multi-buffer library <https://github.com/01org/intel-ipsec-mb>`_
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which implements F8 and F8 functions for SNOW 3G UEA2 cipher and UIA2 hash algorithms.
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Features
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--------
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SNOW 3G PMD has support for:
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Cipher algorithm:
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* RTE_CRYPTO_CIPHER_SNOW3G_UEA2
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Authentication algorithm:
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* RTE_CRYPTO_AUTH_SNOW3G_UIA2
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.. note::
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The latest v1.3 add ARM64 port of ipsec-mb library support ARM platform.
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Limitations
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-----------
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* Chained mbufs are not supported.
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* SNOW 3G (UIA2) supported only if hash offset field is byte-aligned.
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* In-place bit-level operations for SNOW 3G (UEA2) are not supported
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(if length and/or offset of data to be ciphered is not byte-aligned).
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SNOW3G PMD vs AESNI MB PMD
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--------------------------
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AESNI MB PMD also supports SNOW3G cipher and authentication algorithms.
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It is recommended to use the AESNI MB PMD,
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which offers better performance on Intel processors.
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Take a look at the PMD documentation (:doc:`aesni_mb`) for more information.
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Installation
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------------
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To build DPDK with the SNOW3G_PMD the user is required to download the multi-buffer
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library and compile it on their user system before building DPDK.
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For x86 system, the multi-buffer library is available
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`here <https://github.com/01org/intel-ipsec-mb>`_.
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The latest version of the library supported by this PMD is v1.3, which
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can be downloaded from `<https://github.com/01org/intel-ipsec-mb/archive/v1.3.zip>`_.
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For Arm system, ARM64 port of the multi-buffer library can be downloaded from
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`<https://gitlab.arm.com/arm-reference-solutions/ipsec-mb/-/tree/main/>`_. The
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latest version of the library supported by this PMD is tagged as SECLIB-IPSEC-2022.05.25.
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After downloading the library, the user needs to unpack and compile it
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on their system before building DPDK:
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.. code-block:: console
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make
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make install
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The library requires NASM to be built on x86. Depending on the library version,
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it might require a minimum NASM version (e.g. v0.54 requires at least NASM 2.14).
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NASM is packaged for different OS. However, on some OS the version is too old,
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so a manual installation is required. In that case, NASM can be downloaded from
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`NASM website <https://www.nasm.us/pub/nasm/releasebuilds/?C=M;O=D>`_.
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Once it is downloaded, extract it and follow these steps:
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.. code-block:: console
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./configure
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make
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make install
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.. note::
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Compilation of the Multi-Buffer library is broken when GCC < 5.0, if library <= v0.53.
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If a lower GCC version than 5.0, the workaround proposed by the following link
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should be used: `<https://github.com/intel/intel-ipsec-mb/issues/40>`_.
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As a reference, the following table shows a mapping between the past DPDK versions
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and the external crypto libraries supported by them:
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.. _table_snow3g_versions:
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.. table:: DPDK and external crypto library version compatibility
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============= ================================
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DPDK version Crypto library version
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============= ================================
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16.04 - 19.11 LibSSO SNOW3G
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20.02 - 21.08 Multi-buffer library 0.53 - 1.3*
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21.11+ Multi-buffer library 1.0 - 1.3*
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============= ================================
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\* Multi-buffer library 1.0 or newer only works for Meson but not Make build system.
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Initialization
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--------------
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In order to enable this virtual crypto PMD, user must:
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* Build the multi buffer library (explained in Installation section).
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To use the PMD in an application, user must:
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* Call rte_vdev_init("crypto_snow3g") within the application.
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* Use --vdev="crypto_snow3g" in the EAL options, which will call rte_vdev_init() internally.
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The following parameters (all optional) can be provided in the previous two calls:
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* socket_id: Specify the socket where the memory for the device is going to be allocated
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(by default, socket_id will be the socket where the core that is creating the PMD is running on).
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* max_nb_queue_pairs: Specify the maximum number of queue pairs in the device (8 by default).
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* max_nb_sessions: Specify the maximum number of sessions that can be created (2048 by default).
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Example:
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.. code-block:: console
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./dpdk-l2fwd-crypto -l 1 -n 4 --vdev="crypto_snow3g,socket_id=0,max_nb_sessions=128" \
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-- -p 1 --cdev SW --chain CIPHER_ONLY --cipher_algo "snow3g-uea2"
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