Adding upstream version 14.2.21.upstream/14.2.21upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 71 insertions, 0 deletions

diff --git a/src/spdk/dpdk/doc/guides/cryptodevs/armv8.rst b/src/spdk/dpdk/doc/guides/cryptodevs/armv8.rst
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+..  SPDX-License-Identifier: BSD-3-Clause
+    Copyright(c) 2017 Cavium, Inc
+
+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 <https://github.com/caviumnetworks/armv8_crypto>`_
+
+* 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.