X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=doc%2Fguides%2Fcryptodevs%2Fsnow3g.rst;h=7cba712c17ec392a81e504e613c72bcab1d289d6;hb=092a9de50b25c2b66eb79be83bee21c2db2f08e5;hp=c2472e942e5e8d9940f4add773413eaf53e22850;hpb=2f45703c17acb943aaded9f79676fd56a72542b2;p=dpdk.git diff --git a/doc/guides/cryptodevs/snow3g.rst b/doc/guides/cryptodevs/snow3g.rst index c2472e942e..7cba712c17 100644 --- a/doc/guides/cryptodevs/snow3g.rst +++ b/doc/guides/cryptodevs/snow3g.rst @@ -1,31 +1,5 @@ -.. 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 =============================== @@ -41,34 +15,45 @@ SNOW 3G PMD has support for: 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 -the export controlled ``libsso_snow3g`` library, by requesting it from -``_. -Once approval has been granted, the user needs to log in -``_ -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 export controlled ``libsso_snow3g`` library, by registering in +`Intel Resource & Design Center `_. +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 `_. 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 -------------- @@ -83,9 +68,9 @@ In order to enable this virtual crypto PMD, user must: To use the PMD in an application, user must: -* Call rte_eal_vdev_init("crypto_snow3g") within the application. +* Call rte_vdev_init("crypto_snow3g") within the application. -* Use --vdev="crypto_snow3g" 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: @@ -100,4 +85,5 @@ Example: .. code-block:: console - ./l2fwd-crypto -c 40 -n 4 --vdev="crypto_snow3g,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"