X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=doc%2Fguides%2Fcryptodevs%2Faesni_gcm.rst;h=19f95bde8ef92d31630d0c8a8bceb9591cfb85d5;hb=2e3dbc80cc012f11799c7eda866e1168dadb5032;hp=84cdc52abcecf63ff4bb57b1b5f973935d891d3c;hpb=2f6fec53909b90fa653b5d6ace0c4aeb4cce25b7;p=dpdk.git diff --git a/doc/guides/cryptodevs/aesni_gcm.rst b/doc/guides/cryptodevs/aesni_gcm.rst index 84cdc52abc..19f95bde8e 100644 --- a/doc/guides/cryptodevs/aesni_gcm.rst +++ b/doc/guides/cryptodevs/aesni_gcm.rst @@ -1,69 +1,98 @@ -.. BSD LICENSE - Copyright(c) 2016 Intel Corporation. All rights reserved. - - Redistribution and use in source and binary forms, with or without - modification, are permitted provided that the following conditions - are met: - - * Redistributions of source code must retain the above copyright - notice, this list of conditions and the following disclaimer. - * Redistributions in binary form must reproduce the above copyright - notice, this list of conditions and the following disclaimer in - the documentation and/or other materials provided with the - distribution. - * Neither the name of Intel Corporation nor the names of its - contributors may be used to endorse or promote products derived - from this software without specific prior written permission. - - THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +.. SPDX-License-Identifier: BSD-3-Clause + Copyright(c) 2016-2020 Intel Corporation. AES-NI GCM Crypto Poll Mode Driver ================================== -The AES-NI GCM PMD (**librte_pmd_aesni_gcm**) provides poll mode crypto driver -support for utilizing Intel ISA-L crypto library, which provides operation acceleration -through the AES-NI instruction sets for AES-GCM authenticated cipher algorithm. +The AES-NI GCM PMD (**librte_crypto_aesni_gcm**) provides poll mode crypto driver +support for utilizing Intel multi buffer library (see AES-NI Multi-buffer PMD documentation +to learn more about it, including installation). + +The AES-NI GCM PMD supports synchronous mode of operation with +``rte_cryptodev_sym_cpu_crypto_process`` function call for both AES-GCM and +GMAC, however GMAC support is limited to one segment per operation. Please +refer to ``rte_crypto`` programmer's guide for more detail. Features -------- AESNI GCM PMD has support for: -Cipher algorithms: - -* RTE_CRYPTO_CIPHER_AES_GCM - Authentication algorithms: -* RTE_CRYPTO_AUTH_AES_GCM * RTE_CRYPTO_AUTH_AES_GMAC +AEAD algorithms: + +* RTE_CRYPTO_AEAD_AES_GCM + +Limitations +----------- + +* In out-of-place operations, chained destination mbufs are not supported. +* Cipher only is not supported. + + Installation ------------ -To build DPDK with the AESNI_GCM_PMD the user is required to install -the ``libisal_crypto`` library in the build environment. -For download and more details please visit ``_. +To build DPDK with the AESNI_GCM_PMD the user is required to download the multi-buffer +library from `here `_ +and compile it on their user system before building DPDK. +The latest version of the library supported by this PMD is v1.0, which +can be downloaded in ``_. + +.. code-block:: console + + make + make install + +The library requires NASM to be built. Depending on the library version, it might +require a minimum NASM version (e.g. v0.54 requires at least NASM 2.14). + +NASM is packaged for different OS. However, on some OS the version is too old, +so a manual installation is required. In that case, NASM can be downloaded from +`NASM website `_. +Once it is downloaded, extract it and follow these steps: + +.. code-block:: console + + ./configure + make + make install + +.. note:: + + Compilation of the Multi-Buffer library is broken when GCC < 5.0, if library <= v0.53. + If a lower GCC version than 5.0, the workaround proposed by the following link + should be used: ``_. + + +As a reference, the following table shows a mapping between the past DPDK versions +and the external crypto libraries supported by them: + +.. _table_aesni_gcm_versions: + +.. table:: DPDK and external crypto library version compatibility + + ============= ================================ + DPDK version Crypto library version + ============= ================================ + 16.04 - 16.11 Multi-buffer library 0.43 - 0.44 + 17.02 - 17.05 ISA-L Crypto v2.18 + 17.08 - 18.02 Multi-buffer library 0.46 - 0.48 + 18.05 - 19.02 Multi-buffer library 0.49 - 0.52 + 19.05+ Multi-buffer library 0.52 - 1.0 + ============= ================================ + Initialization -------------- In order to enable this virtual crypto PMD, user must: -* Install the ISA-L crypto library (explained in Installation section). - -* Set CONFIG_RTE_LIBRTE_PMD_AESNI_GCM=y in config/common_base. +* Build the multi buffer library (explained in Installation section). To use the PMD in an application, user must: @@ -84,11 +113,5 @@ Example: .. code-block:: console - ./l2fwd-crypto -l 6 -n 4 --vdev="crypto_aesni_gcm,socket_id=1,max_nb_sessions=128" - -Limitations ------------ - -* Chained mbufs are supported but only out-of-place (destination mbuf must be contiguous). -* Hash only is not supported. -* Cipher only is not supported. + ./dpdk-l2fwd-crypto -l 1 -n 4 --vdev="crypto_aesni_gcm,socket_id=0,max_nb_sessions=128" \ + -- -p 1 --cdev SW --chain AEAD --aead_algo "aes-gcm"