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(UEA2) supported only if cipher length, cipher offset fields are byte-aligned.
-* Snow3g(UIA2) supported only if hash length, hash offset fields are byte-aligned.
+* 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 6 -n 4 --vdev="crypto_snow3g,socket_id=1,max_nb_sessions=128"