cryptodev: introduce ARM-specific feature flags

[dpdk.git] / doc / guides / cryptodevs / snow3g.rst

diff --git a/doc/guides/cryptodevs/snow3g.rst b/doc/guides/cryptodevs/snow3g.rst
index 8564c9f..75a08aa 100644 (file)
--- a/doc/guides/cryptodevs/snow3g.rst
+++ b/doc/guides/cryptodevs/snow3g.rst
@@ -41,55 +41,33 @@ 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(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 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>`_,
-and compiling it on their system before building DPDK::
-
-   make -f Makefile_snow3g
-
-**Note**: If using a gcc version higher than 5.0, and compilation fails, apply the following patch:
-
-.. code-block:: diff
-
-   /libsso/src/snow3g/sso_snow3g.c
-
-   static inline void ClockFSM_4(sso_snow3gKeyState4_t *pCtx, __m128i *data)
-   {
-       __m128i F, R;
-   -    uint32_t K, L;
-   +    uint32_t K;
-   +    /* Declare unused if SNOW3G_WSM/SNB are defined */
-   +    uint32_t L __attribute__ ((unused)) = 0;
-
-        F = _mm_add_epi32(pCtx->LFSR_X[15], pCtx->FSM_X[0]);
-        R = _mm_xor_si128(pCtx->LFSR_X[5], pCtx->FSM_X[2]);
-
-   /libsso/include/sso_snow3g_internal.h
-
-   -inline void ClockFSM_1(sso_snow3gKeyState1_t *pCtx, uint32_t *data);
-   -inline void ClockLFSR_1(sso_snow3gKeyState1_t *pCtx);
-   -inline void sso_snow3gStateInitialize_1(sso_snow3gKeyState1_t * pCtx, sso_snow3g_key_schedule_t *pKeySched, uint8_t *pIV);
-   +void ClockFSM_1(sso_snow3gKeyState1_t *pCtx, uint32_t *data);
-   +void ClockLFSR_1(sso_snow3gKeyState1_t *pCtx);
-   +void sso_snow3gStateInitialize_1(sso_snow3gKeyState1_t * pCtx, sso_snow3g_key_schedule_t *pKeySched, uint8_t *pIV);
+`<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.
+After downloading the library, the user needs to unpack and compile it
+on their system before building DPDK::
 
+   make snow3G
 
 Initialization
 --------------
@@ -97,7 +75,7 @@ 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.
+  the library was extracted (snow3g folder).
 
 * Build the LIBSSO_SNOW3G library (explained in Installation section).
 
@@ -105,9 +83,9 @@ In order to enable this virtual crypto PMD, user must:
 
 To use the PMD in an application, user must:
 
-* Call rte_eal_vdev_init("cryptodev_snow3g_pmd") within the application.
+* Call rte_eal_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_eal_vdev_init() internally.
 
 The following parameters (all optional) can be provided in the previous two calls:
 
@@ -122,4 +100,4 @@ Example:
 
 .. code-block:: console
 
-    ./l2fwd-crypto -c 40 -n 4 --vdev="cryptodev_snow3g_pmd,socket_id=1,max_nb_sessions=128"
+    ./l2fwd-crypto -c 40 -n 4 --vdev="crypto_snow3g,socket_id=1,max_nb_sessions=128"