.. index:: pair: group; Check that the driver still works fine after
.. _doxid-group__basic-set__rx__headroom:

Check that the driver still works fine after
============================================

.. toctree::
	:hidden:

headroom changes.

Check that the driver still works fine after headroom changes triggered by usage together with VxLAN tunnel in the bridge.



#. Configure serial parser to check for driver logs on IUT.

#. Enable all flags in **msglvl** for IUT interface.

#. Create TAP interface on IUT.

#. Create VxLAN interface on IUT.
   
   * Allocate a pair of IP addresses for VxLAN tunnel.
   
   * Create new VxLAN tunnel interface on IUT.

#. Start new VxLAN interface on IUT.

#. Create new bridge with 2 interfaces on IUT.
   
   * Create new bridge on IUT.
   
   * Up new bridge interface on IUT.
   
   * Add IUT interface to the bridge.
   
   * Add VxLAN interface to the bridge to trigger Rx headroom changes on already added IUT interface.

#. If **if_down_up** is ``TRUE``, set the IUT interface DOWN and UP.

#. Create a CSAP on IUT to capture packets sent to **iut_addr**.

#. Create a CSAP on Tester to send packets to **iut_addr**.

#. Send a packet from Tester and check that it is received successfully on IUT interface.

#. Check that driver printed some logs about headroom.



.. 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>`