1 .. SPDX-License-Identifier: BSD-3-Clause
2 Copyright(c) 2021 Intel Corporation.
4 Chacha20-poly1305 Crypto Poll Mode Driver
5 =========================================
7 The Chacha20-poly1305 PMD provides poll mode crypto driver support for
8 utilizing `Intel IPSec Multi-buffer library <https://github.com/01org/intel-ipsec-mb>`_.
13 Chacha20-poly1305 PMD has support for:
17 * RTE_CRYPTO_AEAD_CHACHA20_POLY1305
23 To build DPDK with the Chacha20-poly1305 PMD the user is required to download
24 the multi-buffer library from `here <https://github.com/01org/intel-ipsec-mb>`_
25 and compile it on their user system before building DPDK.
26 The latest version of the library supported by this PMD is v1.0, which
27 can be downloaded from `<https://github.com/01org/intel-ipsec-mb/archive/v1.0.zip>`_.
29 After downloading the library, the user needs to unpack and compile it
30 on their system before building DPDK:
32 .. code-block:: console
37 The library requires NASM to be built. Depending on the library version, it might
38 require a minimum NASM version (e.g. v0.54 requires at least NASM 2.14).
40 NASM is packaged for different OS. However, on some OS the version is too old,
41 so a manual installation is required. In that case, NASM can be downloaded from
42 `NASM website <https://www.nasm.us/pub/nasm/releasebuilds/?C=M;O=D>`_.
43 Once it is downloaded, extract it and follow these steps:
45 .. code-block:: console
53 Compilation of the Multi-Buffer library is broken when GCC < 5.0, if library <= v0.53.
54 If a lower GCC version than 5.0, the workaround proposed by the following link
55 should be used: `<https://github.com/intel/intel-ipsec-mb/issues/40>`_.
57 As a reference, the following table shows a mapping between the past DPDK versions
58 and the external crypto libraries supported by them:
60 .. _table_chacha20_poly1305_versions:
62 .. table:: DPDK and external crypto library version compatibility
64 ============= ================================
65 DPDK version Crypto library version
66 ============= ================================
67 21.11+ Multi-buffer library 1.0*
68 ============= ================================
70 \* Multi-buffer library 1.0 or newer only works for Meson but not Make build system.
75 In order to enable this virtual crypto PMD, user must:
77 * Build the multi buffer library (explained in Installation section).
79 To use the PMD in an application, user must:
81 * Call rte_vdev_init("crypto_chacha20_poly1305") within the application.
83 * Use --vdev="crypto_chacha20_poly1305" in the EAL options, which will call
84 rte_vdev_init() internally.
86 The following parameters (all optional) can be provided in the previous two calls:
88 * socket_id: Specify the socket where the memory for the device is going to be allocated
89 (by default, socket_id will be the socket where the core that is creating the PMD is running on).
91 * max_nb_queue_pairs: Specify the maximum number of queue pairs in the device (8 by default).
93 * max_nb_sessions: Specify the maximum number of sessions that can be created (2048 by default).
97 .. code-block:: console
99 --vdev="crypto_chacha20_poly1305,socket_id=0,max_nb_sessions=128"