1 .. SPDX-License-Identifier: BSD-3-Clause
2 Copyright(c) 2016-2019 Intel Corporation.
4 SNOW 3G Crypto Poll Mode Driver
5 ===============================
7 The SNOW3G PMD (**librte_crypto_snow3g**) provides poll mode crypto driver support for
8 utilizing `Intel IPSec Multi-buffer library <https://github.com/01org/intel-ipsec-mb>`_
9 which implements F8 and F8 functions for SNOW 3G UEA2 cipher and UIA2 hash algorithms.
14 SNOW 3G PMD has support for:
18 * RTE_CRYPTO_CIPHER_SNOW3G_UEA2
20 Authentication algorithm:
22 * RTE_CRYPTO_AUTH_SNOW3G_UIA2
27 * Chained mbufs are not supported.
28 * SNOW 3G (UIA2) supported only if hash offset field is byte-aligned.
29 * In-place bit-level operations for SNOW 3G (UEA2) are not supported
30 (if length and/or offset of data to be ciphered is not byte-aligned).
35 To build DPDK with the SNOW3G_PMD the user is required to download the multi-buffer
36 library from `here <https://github.com/01org/intel-ipsec-mb>`_
37 and compile it on their user system before building DPDK.
38 The latest version of the library supported by this PMD is v1.2, which
39 can be downloaded from `<https://github.com/01org/intel-ipsec-mb/archive/v1.2.zip>`_.
41 After downloading the library, the user needs to unpack and compile it
42 on their system before building DPDK:
44 .. code-block:: console
49 The library requires NASM to be built. Depending on the library version, it might
50 require a minimum NASM version (e.g. v0.54 requires at least NASM 2.14).
52 NASM is packaged for different OS. However, on some OS the version is too old,
53 so a manual installation is required. In that case, NASM can be downloaded from
54 `NASM website <https://www.nasm.us/pub/nasm/releasebuilds/?C=M;O=D>`_.
55 Once it is downloaded, extract it and follow these steps:
57 .. code-block:: console
65 Compilation of the Multi-Buffer library is broken when GCC < 5.0, if library <= v0.53.
66 If a lower GCC version than 5.0, the workaround proposed by the following link
67 should be used: `<https://github.com/intel/intel-ipsec-mb/issues/40>`_.
69 As a reference, the following table shows a mapping between the past DPDK versions
70 and the external crypto libraries supported by them:
72 .. _table_snow3g_versions:
74 .. table:: DPDK and external crypto library version compatibility
76 ============= ================================
77 DPDK version Crypto library version
78 ============= ================================
79 16.04 - 19.11 LibSSO SNOW3G
80 20.02 - 21.08 Multi-buffer library 0.53 - 1.2*
81 21.11+ Multi-buffer library 1.0 - 1.2*
82 ============= ================================
84 \* Multi-buffer library 1.0 or newer only works for Meson but not Make build system.
89 In order to enable this virtual crypto PMD, user must:
91 * Build the multi buffer library (explained in Installation section).
93 To use the PMD in an application, user must:
95 * Call rte_vdev_init("crypto_snow3g") within the application.
97 * Use --vdev="crypto_snow3g" in the EAL options, which will call rte_vdev_init() internally.
99 The following parameters (all optional) can be provided in the previous two calls:
101 * socket_id: Specify the socket where the memory for the device is going to be allocated
102 (by default, socket_id will be the socket where the core that is creating the PMD is running on).
104 * max_nb_queue_pairs: Specify the maximum number of queue pairs in the device (8 by default).
106 * max_nb_sessions: Specify the maximum number of sessions that can be created (2048 by default).
110 .. code-block:: console
112 ./dpdk-l2fwd-crypto -l 1 -n 4 --vdev="crypto_snow3g,socket_id=0,max_nb_sessions=128" \
113 -- -p 1 --cdev SW --chain CIPHER_ONLY --cipher_algo "snow3g-uea2"