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[deb_dpdk.git] / doc / guides / cryptodevs / zuc.rst

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+..  BSD LICENSE
+    Copyright(c) 2016 Intel Corporation. All rights reserved.
+
+    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 Intel Corporation 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.
+
+ZUC Crypto Poll Mode Driver
+===========================
+
+The ZUC PMD (**librte_pmd_zuc**) provides poll mode crypto driver
+support for utilizing Intel Libsso library, which implements F8 and F9 functions
+for ZUC EEA3 cipher and EIA3 hash algorithms.
+
+Features
+--------
+
+ZUC PMD has support for:
+
+Cipher algorithm:
+
+* RTE_CRYPTO_CIPHER_ZUC_EEA3
+
+Authentication algorithm:
+
+* RTE_CRYPTO_AUTH_ZUC_EIA3
+
+Limitations
+-----------
+
+* Chained mbufs are not supported.
+* ZUC (EIA3) supported only if hash offset field is byte-aligned.
+* ZUC (EEA3) supported only if cipher length, cipher offset fields are byte-aligned.
+* ZUC PMD cannot be built as a shared library, due to limitations in
+  in the underlying library.
+
+
+Installation
+------------
+
+To build DPDK with the ZUC_PMD the user is required to download
+the export controlled ``libsso_zuc`` library, by requesting it from
+`<https://networkbuilders.intel.com/network-technologies/dpdk>`_.
+Once approval has been granted, the user needs to log in
+`<https://networkbuilders.intel.com/dpdklogin>`_
+and click on "ZUC Library" link, to download the library.
+After downloading the library, the user needs to unpack and compile it
+on their system before building DPDK::
+
+   make
+
+Initialization
+--------------
+
+In order to enable this virtual crypto PMD, user must:
+
+* Export the environmental variable LIBSSO_ZUC_PATH with the path where
+  the library was extracted (zuc folder).
+
+* Build the LIBSSO_ZUC library (explained in Installation section).
+
+* Build DPDK as follows:
+
+.. code-block:: console
+
+       make config T=x86_64-native-linuxapp-gcc
+       sed -i 's,\(CONFIG_RTE_LIBRTE_PMD_ZUC\)=n,\1=y,' build/.config
+       make
+
+To use the PMD in an application, user must:
+
+* Call rte_eal_vdev_init("crypto_zuc") within the application.
+
+* Use --vdev="crypto_zuc" in the EAL options, which will call rte_eal_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 -c 40 -n 4 --vdev="crypto_zuc,socket_id=1,max_nb_sessions=128"