.. index:: pair: group; Unloading driver when data flows
.. _doxid-group__stress-driver__unload__traffic:

Unloading driver when data flows
================================

.. toctree::
	:hidden:

	group_stress-driver_unload_traffic-run.rst

Check that unloading network driver works fine when data is received and transmitted over an interface.

Scenarios: X3-SYS09, X3-STR13.



#. Create **conns_num** pairs of connected UDP sockets on IUT and Tester. Fork additional RPC servers to send data simultaneously in both directions over them.

#. Save configuration backup.

#. Start sending and receiving data simultaneously in both directions over each connected socket pair. This should continue until **send_time** expires.

#. If **unload_once** is ``TRUE``, do the following steps once. Otherwise do them until **send_time** expires.
   
   * Unload the tested driver module.
   
   * Wait for a while.
   
   * Reload the tested driver module.
   
   * Restore configuration from the backup so that addresses assigned to the IUT interface are restored.
   
   * Wait for a while.

#. Wait until sending and receiving data over sockets terminates, check that no unexpected errors occurred.

#. Check that data can be sent from IUT to Tester and vice versa and received by peer.

Dmitry Izbitsky `Dmitry.Izbitsky@oktetlabs.ru <mailto:Dmitry.Izbitsky@oktetlabs.ru>`__



.. rubric:: Parameters:

.. list-table::
	:widths: 20 80

	*
		- env

		- 
		  Testing environment:
		  
		  * :ref:`env.peer2peer <doxid-group__env-peer2peer>`
		  
		  * :ref:`env.peer2peer_ipv6 <doxid-group__env-peer2peer__ipv6>`

	*
		- send_time

		- How long to send/receive data, in seconds.

	*
		- unload_once

		- If ``TRUE``, unload and reload the driver once, if ``FALSE`` - do it many times in a loop until **send_time** expires.

	*
		- conns_num

		- How many connections should send and receive data.

|	:ref:`driver_unload_traffic<doxid-group__stress-driver__unload__traffic-run>`