e0163eab61
Intel's libsso_snow3g library has been moved to a new location, under "Intel Resource & Design Center". The installation section of this PMD has been updated to include the new instructions. Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com> Acked-by: Marko Kovacevic <marko.kovacevic@intel.com>
90 lines
3.0 KiB
ReStructuredText
90 lines
3.0 KiB
ReStructuredText
.. SPDX-License-Identifier: BSD-3-Clause
|
|
Copyright(c) 2016 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.
|
|
|
|
Features
|
|
--------
|
|
|
|
SNOW 3G PMD has support for:
|
|
|
|
Cipher algorithm:
|
|
|
|
* RTE_CRYPTO_CIPHER_SNOW3G_UEA2
|
|
|
|
Authentication algorithm:
|
|
|
|
* RTE_CRYPTO_AUTH_SNOW3G_UIA2
|
|
|
|
Limitations
|
|
-----------
|
|
|
|
* Chained mbufs are not supported.
|
|
* SNOW 3G (UIA2) supported only if hash offset field is byte-aligned.
|
|
* In-place bit-level operations for SNOW 3G (UEA2) are not supported
|
|
(if length and/or offset of data to be ciphered is not byte-aligned).
|
|
|
|
Installation
|
|
------------
|
|
|
|
To build DPDK with the SNOW3G_PMD the user is required to download
|
|
the export controlled ``libsso_snow3g`` library, by registering in
|
|
`Intel Resource & Design Center <https://www.intel.com/content/www/us/en/design/resource-design-center.html>`_.
|
|
Once approval has been granted, the user needs to search for
|
|
*Snow3G F8 F9 3GPP cryptographic algorithms Software Library* to download the
|
|
library or directly through this `link <https://cdrdv2.intel.com/v1/dl/getContent/575867>`_.
|
|
After downloading the library, the user needs to unpack and compile it
|
|
on their system before building DPDK::
|
|
|
|
make snow3G
|
|
|
|
**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.::
|
|
|
|
#EXTRA_CFLAGS += -D_3GPP_SAFE_BUFFERS
|
|
|
|
|
|
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 LIBSSO_SNOW3G library (explained in Installation section).
|
|
|
|
* Set CONFIG_RTE_LIBRTE_PMD_SNOW3G=y in config/common_base.
|
|
|
|
To use the PMD in an application, user must:
|
|
|
|
* Call rte_vdev_init("crypto_snow3g") within the application.
|
|
|
|
* Use --vdev="crypto_snow3g" 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_snow3g,socket_id=0,max_nb_sessions=128" \
|
|
-- -p 1 --cdev SW --chain CIPHER_ONLY --cipher_algo "snow3g-uea2"
|