.. index:: pair: group; Prove that VLAN ID is kept on port restart
.. _doxid-group__xmit-vlan__on__port__restart:

Prove that VLAN ID is kept on port restart
==========================================

.. toctree::
	:hidden:

	group_xmit-vlan_on_port_restart-run.rst

Make sure that PMD does not loose previously configured VLAN TCI if a port restart takes place between two packet bursts with the same VLAN TCI set in the mbufs before and after the port restart

The test is to verify that PMD is able to preserve VLAN TCI established once at the beginning of a packet burst in case if the port restart is done after the burst is sent and before the next one is prepared with the same VLAN TCI

The task is fulfilled by sending a couple of packets with the same VLAN TCI set in the mbufs: one before and one after restart is performed on the port

#. Initialize ethdev and obtain the device information

#. Check if VLAN insertion offload is supported and enable it

#. Prepare ``TEST_ETHDEV_CONFIGURED`` state

#. Adjust TxQ settings (if need be)

#. Prepare ``TEST_ETHDEV_STARTED`` state

#. Start the TxQ (if need be)

#. Obtain the source Ethernet address

#. Adjust the traffic template

#. Adjust so-called 'send transformations' for the packets

#. Generate mbufs and the corresponding pattern for the packets

#. Create an RX CSAP on the TST host according to the template

#. Start to capture traffic with the pattern prepared

#. Ensure that interface is UP on Tester side

#. Validate and send the first packet

#. Stop the port, wait for a small amount of time, start the port

#. Start the TxQ (if need be)

#. Ensure that interface is UP on Tester side after restart

#. Validate and send the second packet

#. Verify the number of matching packets received



.. rubric:: Parameters:

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

	*
		- template

		- Traffic template

	*
		- vlan_id

		- VLAN ID or ``-1`` (disable)

	*
		- deferred_txq_start

		- Use deferred start for the TxQ

|	:ref:`vlan_on_port_restart<doxid-group__xmit-vlan__on__port__restart-run>`