dede694cd5
The intel-ipsec-mb library requires NASM as a dependency. Steps on how to get and install NASM are added on the documentation of the crypto PMDs which requires the library. Bugzilla ID: 417 Cc: stable@dpdk.org Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com> Acked-by: Kevin Traynor <ktraynor@redhat.com>
120 lines
3.8 KiB
ReStructuredText
120 lines
3.8 KiB
ReStructuredText
.. 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_snow3g_zuc**) 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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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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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 from `here <https://github.com/01org/intel-ipsec-mb>`_
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and compile it on their user system before building DPDK.
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The latest version of the library supported by this PMD is v0.54, which
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can be downloaded from `<https://github.com/01org/intel-ipsec-mb/archive/v0.54.zip>`_.
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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. Depending on the library version, it might
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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+ Multi-buffer library 0.53 - 0.54
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============= ================================
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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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* Build DPDK as follows:
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.. code-block:: console
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make config T=x86_64-native-linux-gcc
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sed -i 's,\(CONFIG_RTE_LIBRTE_PMD_SNOW3G\)=n,\1=y,' build/.config
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make
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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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./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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