1 .. SPDX-License-Identifier: BSD-3-Clause
2 Copyright(c) 2017 Cavium, Inc
4 ARMv8 Crypto Poll Mode Driver
5 =============================
7 This code provides the initial implementation of the ARMv8 crypto PMD.
8 The driver uses ARMv8 cryptographic extensions to process chained crypto
9 operations in an optimized way. The core functionality is provided by
10 a low-level library, written in the assembly code.
15 ARMv8 Crypto PMD has support for the following algorithm pairs:
17 Supported cipher algorithms:
19 * ``RTE_CRYPTO_CIPHER_AES_CBC``
21 Supported authentication algorithms:
23 * ``RTE_CRYPTO_AUTH_SHA1_HMAC``
24 * ``RTE_CRYPTO_AUTH_SHA256_HMAC``
29 In order to enable this virtual crypto PMD, user must:
31 * Download ARMv8 crypto library source code from
32 `here <https://github.com/caviumnetworks/armv8_crypto>`_
34 * Export the environmental variable ARMV8_CRYPTO_LIB_PATH with
35 the path where the ``armv8_crypto`` library was downloaded
38 * Build the library by invoking:
40 .. code-block:: console
42 make -C $ARMV8_CRYPTO_LIB_PATH/
44 * Set CONFIG_RTE_LIBRTE_PMD_ARMV8_CRYPTO=y in
45 config/defconfig_arm64-armv8a-linuxapp-gcc
47 The corresponding device can be created only if the following features
48 are supported by the CPU:
51 * ``RTE_CPUFLAG_SHA1``
52 * ``RTE_CPUFLAG_SHA2``
53 * ``RTE_CPUFLAG_NEON``
58 User can use app/test application to check how to use this PMD and to verify
61 Test name is cryptodev_sw_armv8_autotest.
62 For performance test cryptodev_sw_armv8_perftest can be used.
67 * Maximum number of sessions is 2048.
68 * Only chained operations are supported.
69 * AES-128-CBC is the only supported cipher variant.
70 * Cipher input data has to be a multiple of 16 bytes.
71 * Digest input data has to be a multiple of 8 bytes.