0e9f8507af
This patch updates the current AESNI-MB PMD with added AES-GCM algorithm support. The patch includes the necessary changes to the code including the capability update, control and data patch changes for the AES-GCM algorithm support. Signed-off-by: Fan Zhang <roy.fan.zhang@intel.com> Acked-by: Arek Kusztal <arkadiuszx.kusztal@intel.com>
132 lines
4.0 KiB
ReStructuredText
132 lines
4.0 KiB
ReStructuredText
.. SPDX-License-Identifier: BSD-3-Clause
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Copyright(c) 2015-2017 Intel Corporation.
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AESN-NI Multi Buffer Crypto Poll Mode Driver
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============================================
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The AESNI MB PMD (**librte_pmd_aesni_mb**) provides poll mode crypto driver
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support for utilizing Intel multi buffer library, see the white paper
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`Fast Multi-buffer IPsec Implementations on Intel® Architecture Processors
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<https://www.intel.com/content/dam/www/public/us/en/documents/white-papers/fast-multi-buffer-ipsec-implementations-ia-processors-paper.pdf>`_.
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The AES-NI MB PMD has current only been tested on Fedora 21 64-bit with gcc.
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Features
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--------
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AESNI MB PMD has support for:
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Cipher algorithms:
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* RTE_CRYPTO_CIPHER_AES128_CBC
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* RTE_CRYPTO_CIPHER_AES192_CBC
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* RTE_CRYPTO_CIPHER_AES256_CBC
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* RTE_CRYPTO_CIPHER_AES128_CTR
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* RTE_CRYPTO_CIPHER_AES192_CTR
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* RTE_CRYPTO_CIPHER_AES256_CTR
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* RTE_CRYPTO_CIPHER_AES_DOCSISBPI
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* RTE_CRYPTO_CIPHER_DES_CBC
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* RTE_CRYPTO_CIPHER_3DES_CBC
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* RTE_CRYPTO_CIPHER_DES_DOCSISBPI
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Hash algorithms:
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* RTE_CRYPTO_HASH_MD5_HMAC
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* RTE_CRYPTO_HASH_SHA1_HMAC
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* RTE_CRYPTO_HASH_SHA224_HMAC
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* RTE_CRYPTO_HASH_SHA256_HMAC
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* RTE_CRYPTO_HASH_SHA384_HMAC
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* RTE_CRYPTO_HASH_SHA512_HMAC
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* RTE_CRYPTO_HASH_AES_XCBC_HMAC
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* RTE_CRYPTO_HASH_AES_CMAC
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AEAD algorithms:
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* RTE_CRYPTO_AEAD_AES_CCM
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* RTE_CRYPTO_AEAD_AES_GCM
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Limitations
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-----------
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* Chained mbufs are not supported.
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* Only in-place is currently supported (destination address is the same as source address).
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Installation
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------------
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To build DPDK with the AESNI_MB_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 v0.50, which
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can be downloaded from `<https://github.com/01org/intel-ipsec-mb/archive/v0.50.zip>`_.
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.. code-block:: console
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make
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make install
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As a reference, the following table shows a mapping between the past DPDK versions
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and the Multi-Buffer library version supported by them:
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.. _table_aesni_mb_versions:
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.. table:: DPDK and Multi-Buffer library version compatibility
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============== ============================
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DPDK version Multi-buffer library version
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============== ============================
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2.2 - 16.11 0.43 - 0.44
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17.02 0.44
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17.05 - 17.08 0.45 - 0.48
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17.11 0.47 - 0.48
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18.02 0.48
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18.05+ 0.49+
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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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* Set CONFIG_RTE_LIBRTE_PMD_AESNI_MB=y in config/common_base.
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To use the PMD in an application, user must:
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* Call rte_vdev_init("crypto_aesni_mb") within the application.
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* Use --vdev="crypto_aesni_mb" 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_aesni_mb,socket_id=0,max_nb_sessions=128" \
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-- -p 1 --cdev SW --chain CIPHER_HASH --cipher_algo "aes-cbc" --auth_algo "sha1-hmac"
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Extra notes
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-----------
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For AES Counter mode (AES-CTR), the library supports two different sizes for Initialization
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Vector (IV):
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* 12 bytes: used mainly for IPSec, as it requires 12 bytes from the user, which internally
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are appended the counter block (4 bytes), which is set to 1 for the first block
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(no padding required from the user)
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* 16 bytes: when passing 16 bytes, the library will take them and use the last 4 bytes
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as the initial counter block for the first block.
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