-The environmental variable ``LIBSSO_PATH`` must be exported with the path
-where you extracted and built the libsso library and finally 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 6 -n 4 --vdev="crypto_snow3g,socket_id=1,max_nb_sessions=128"