.. SPDX-License-Identifier: BSD-3-Clause
- Copyright(c) 2016 Intel Corporation.
+ Copyright(c) 2016-2019 Intel Corporation.
SNOW 3G Crypto Poll Mode Driver
===============================
-The SNOW 3G PMD (**librte_pmd_snow3g**) provides poll mode crypto driver
-support for utilizing Intel Libsso library, which implements F8 and F9 functions
-for SNOW 3G UEA2 cipher and UIA2 hash algorithms.
+The SNOW3G PMD (**librte_snow3g_zuc**) provides poll mode crypto driver support for
+utilizing `Intel IPSec Multi-buffer library <https://github.com/01org/intel-ipsec-mb>`_
+which implements F8 and F8 functions for SNOW 3G UEA2 cipher and UIA2 hash algorithms.
Features
--------
Installation
------------
-To build DPDK with the SNOW3G_PMD the user is required to download
-the export controlled ``libsso_snow3g`` 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 "Snow3G Bit Stream crypto library" link, to download the library.
+To build DPDK with the SNOW3G_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 v0.53, which
+can be downloaded from `<https://github.com/01org/intel-ipsec-mb/archive/v0.53.zip>`_.
+
After downloading the library, the user needs to unpack and compile it
-on their system before building DPDK::
+on their system before building DPDK:
+
+.. code-block:: console
+
+ make
+ make install
+
+.. note::
- make snow3G
+ Compilation of the Multi-Buffer library is broken when GCC < 5.0, if library <= v0.53.
+ If a lower GCC version than 5.0, the workaround proposed by the following link
+ should be used: `<https://github.com/intel/intel-ipsec-mb/issues/40>`_.
-**Note**: When encrypting with SNOW3G UEA2, by default the library
-encrypts blocks of 4 bytes, regardless the number of bytes to
-be encrypted provided (which leads to a possible buffer overflow).
-To avoid this situation, it is necessary not to pass
-3GPP_SAFE_BUFFERS as a compilation flag.
-For this, in the Makefile of the library, make sure that this flag
-is commented out.::
+As a reference, the following table shows a mapping between the past DPDK versions
+and the external crypto libraries supported by them:
- #EXTRA_CFLAGS += -D_3GPP_SAFE_BUFFERS
+.. _table_snow3g_versions:
+
+.. table:: DPDK and external crypto library version compatibility
+
+ ============= ================================
+ DPDK version Crypto library version
+ ============= ================================
+ 16.04 - 19.11 LibSSO SNOW3G
+ 20.02+ Multi-buffer library 0.53
+ ============= ================================
Initialization
In order to enable this virtual crypto PMD, user must:
-* Export the environmental variable LIBSSO_SNOW3G_PATH with the path where
- the library was extracted (snow3g folder).
+* Build the multi buffer library (explained in Installation section).
-* Build the LIBSSO_SNOW3G library (explained in Installation section).
+* Build DPDK as follows:
+
+.. code-block:: console
-* Set CONFIG_RTE_LIBRTE_PMD_SNOW3G=y in config/common_base.
+ make config T=x86_64-native-linux-gcc
+ sed -i 's,\(CONFIG_RTE_LIBRTE_PMD_SNOW3G\)=n,\1=y,' build/.config
+ make
To use the PMD in an application, user must: