-.. 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.
+.. SPDX-License-Identifier: BSD-3-Clause
+ Copyright(c) 2016 Intel Corporation.
SNOW 3G Crypto Poll Mode Driver
===============================
Cipher algorithm:
-* RTE_CRYPTO_SYM_CIPHER_SNOW3G_UEA2
+* RTE_CRYPTO_CIPHER_SNOW3G_UEA2
Authentication algorithm:
-* RTE_CRYPTO_SYM_AUTH_SNOW3G_UIA2
+* RTE_CRYPTO_AUTH_SNOW3G_UIA2
Limitations
-----------
* Chained mbufs are not supported.
-* Snow3g(UIA2) supported only if hash offset field is byte-aligned.
-* In-place bit-level operations for Snow3g(UEA2) 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 KASUMI_PMD the user is required to download
+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
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
--------------
To use the PMD in an application, user must:
-* Call rte_eal_vdev_init("cryptodev_snow3g_pmd") within the application.
+* Call rte_vdev_init("crypto_snow3g") within the application.
-* Use --vdev="cryptodev_snow3g_pmd" in the EAL options, which will call rte_eal_vdev_init() internally.
+* 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:
.. code-block:: console
- ./l2fwd-crypto -c 40 -n 4 --vdev="cryptodev_snow3g_pmd,socket_id=1,max_nb_sessions=128"
+ ./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"