Adding upstream version 14.2.21.upstream/14.2.21upstream

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

1 files changed, 93 insertions, 0 deletions

diff --git a/src/spdk/dpdk/doc/guides/cryptodevs/aesni_gcm.rst b/src/spdk/dpdk/doc/guides/cryptodevs/aesni_gcm.rst
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+..  SPDX-License-Identifier: BSD-3-Clause
+    Copyright(c) 2016-2017 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 multi buffer library (see AES-NI Multi-buffer PMD documentation
+to learn more about it, including installation).
+
+Features
+--------
+
+AESNI GCM PMD has support for:
+
+Authentication algorithms:
+
+* RTE_CRYPTO_AUTH_AES_GMAC
+
+AEAD algorithms:
+
+* RTE_CRYPTO_AEAD_AES_GCM
+
+
+Limitations
+-----------
+
+* Chained mbufs are supported but only out-of-place (destination mbuf must be contiguous).
+* Cipher only is not supported.
+
+
+Installation
+------------
+
+To build DPDK with the AESNI_GCM_PMD the user is required to download the multi-buffer
+library from `here <https://github.com/01org/intel-ipsec-mb>`_
+and compile it on their user system before building DPDK.
+The latest version of the library supported by this PMD is v0.50, which
+can be downloaded in `<https://github.com/01org/intel-ipsec-mb/archive/v0.50.zip>`_.
+
+.. code-block:: console
+
+    make
+    make install
+
+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+         Multi-buffer library 0.49+
+   =============  ================================
+
+
+Initialization
+--------------
+
+In order to enable this virtual crypto PMD, user must:
+
+* Build the multi buffer library (explained in Installation section).
+
+* Set CONFIG_RTE_LIBRTE_PMD_AESNI_GCM=y in config/common_base.
+
+To use the PMD in an application, user must:
+
+* Call rte_vdev_init("crypto_aesni_gcm") within the application.
+
+* Use --vdev="crypto_aesni_gcm" in the EAL options, which will call rte_vdev_init() internally.
+
+The following parameters (all optional) can be provided in the previous two calls:
+
+* socket_id: Specify the socket where the memory for the device is going to be allocated
+  (by default, socket_id will be the socket where the core that is creating the PMD is running on).
+
+* max_nb_queue_pairs: Specify the maximum number of queue pairs in the device (8 by default).
+
+* max_nb_sessions: Specify the maximum number of sessions that can be created (2048 by default).
+
+Example:
+
+.. code-block:: console
+
+    ./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"