From 7595afa4d30097c1177b69257118d8ad89a539be Mon Sep 17 00:00:00 2001 From: Christian Ehrhardt Date: Tue, 16 May 2017 14:51:32 +0200 Subject: Imported Upstream version 17.05 Change-Id: Id1e419c5a214e4a18739663b91f0f9a549f1fdc6 Signed-off-by: Christian Ehrhardt --- doc/guides/cryptodevs/armv8.rst | 98 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 98 insertions(+) create mode 100644 doc/guides/cryptodevs/armv8.rst (limited to 'doc/guides/cryptodevs/armv8.rst') diff --git a/doc/guides/cryptodevs/armv8.rst b/doc/guides/cryptodevs/armv8.rst new file mode 100644 index 00000000..de63793f --- /dev/null +++ b/doc/guides/cryptodevs/armv8.rst @@ -0,0 +1,98 @@ +.. BSD LICENSE + Copyright (C) Cavium networks Ltd. 2017. + + 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 Cavium networks 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. + + +ARMv8 Crypto Poll Mode Driver +============================= + +This code provides the initial implementation of the ARMv8 crypto PMD. +The driver uses ARMv8 cryptographic extensions to process chained crypto +operations in an optimized way. The core functionality is provided by +a low-level library, written in the assembly code. + +Features +-------- + +ARMv8 Crypto PMD has support for the following algorithm pairs: + +Supported cipher algorithms: + +* ``RTE_CRYPTO_CIPHER_AES_CBC`` + +Supported authentication algorithms: + +* ``RTE_CRYPTO_AUTH_SHA1_HMAC`` +* ``RTE_CRYPTO_AUTH_SHA256_HMAC`` + +Installation +------------ + +In order to enable this virtual crypto PMD, user must: + +* Download ARMv8 crypto library source code from + `here `_ + +* Export the environmental variable ARMV8_CRYPTO_LIB_PATH with + the path where the ``armv8_crypto`` library was downloaded + or cloned. + +* Build the library by invoking: + +.. code-block:: console + + make -C $ARMV8_CRYPTO_LIB_PATH/ + +* Set CONFIG_RTE_LIBRTE_PMD_ARMV8_CRYPTO=y in + config/defconfig_arm64-armv8a-linuxapp-gcc + +The corresponding device can be created only if the following features +are supported by the CPU: + +* ``RTE_CPUFLAG_AES`` +* ``RTE_CPUFLAG_SHA1`` +* ``RTE_CPUFLAG_SHA2`` +* ``RTE_CPUFLAG_NEON`` + +Initialization +-------------- + +User can use app/test application to check how to use this PMD and to verify +crypto processing. + +Test name is cryptodev_sw_armv8_autotest. +For performance test cryptodev_sw_armv8_perftest can be used. + +Limitations +----------- + +* Maximum number of sessions is 2048. +* Only chained operations are supported. +* AES-128-CBC is the only supported cipher variant. +* Cipher input data has to be a multiple of 16 bytes. +* Digest input data has to be a multiple of 8 bytes. -- cgit 1.2.3-korg