Q5-Deauth after auth response
===========================================

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        Topics in this section,

                * :ref:`Learnings in this section <wifi_ldd_wi-fi_dev_driver_ques5_step_1>`

                * :ref:`Version Info <wifi_ldd_wi-fi_dev_driver_ques5_step_2>`

                * :ref:`Problem Statement <wifi_ldd_wi-fi_dev_driver_ques5_step_3>`

                * :ref:`Approach and code flow <wifi_ldd_wi-fi_dev_driver_ques5_step_4>`

                * :ref:`Actual change and Patch <wifi_ldd_wi-fi_dev_driver_ques5_step_5>`

                * :ref:`Wireshark capture <wifi_ldd_wi-fi_dev_driver_ques5_step_6>`


.. _wifi_ldd_wi-fi_dev_driver_ques5_step_1:
  
.. tab-set::

   .. tab-item:: Learnings in this section

        * In this section, you are going to learn


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                * How to send de-authentication packet on reception of authentication response packet from AP


.. _wifi_ldd_wi-fi_dev_driver_ques5_step_2:

.. tab-set::
 
    .. tab-item:: Version Info

        =============================== =======================================
        #                               Version
        =============================== =======================================
        Ubuntu                          Ubuntu 22.04 64 bit
        Linux Kernel                    6.9.2
	Supplicant                      wpa_supplicant 2.10
	Hostapd                         hostapd 2.10
        =============================== =======================================


.. _wifi_ldd_wi-fi_dev_driver_ques5_step_3:
  
.. tab-set::

   .. tab-item:: Problem Statement

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                * Send De-Authentication packet on reception of Authentication response packet from AP


.. _wifi_ldd_wi-fi_dev_driver_ques5_step_4:
  
.. tab-set::

   .. tab-item:: Approach and code flow

	* Call flow for send de-authentication packet on reception of Authentication response packet from AP
	
	.. literalinclude:: send_deauth_after_auth_res_callflow.txt

	
.. _wifi_ldd_wi-fi_dev_driver_ques5_step_5:
  
.. tab-set::

   .. tab-item:: Actual change and Patch

	* Download the below patch file

	:download:`send_deauth_after_auth_res.patch <send_deauth_after_auth_res.patch>`

	.. dropdown:: See the full content of patch file

            .. literalinclude:: send_deauth_after_auth_res.patch

	.. code-block:: shell

		test:~$ pwd
		/home/test/

	* Compile Linux

		:doc:`../../../../osp/bare_linux/x86-64/secB`

	* Change directory to linux-6.9.2

	.. code-block:: shell
        
                test:~$ cd linux-6.9.2/
	
	* Note : Your present working directory should be linux-6.9.2

        .. code-block:: shell
        
                test:~$ pwd
                /home/test/linux-6.9.2/

	* Remove mac80211 module

	.. code-block:: shell

		test:~$ sudo systemctl stop NetworkManager.service

                test:~$ sudo rmmod mac80211
	
	* Run the below command to apply patch 

        .. code-block:: shell

                test:~$ sudo patch -p1 < send_deauth_after_auth_res.patch
		patching file net/mac80211/ieee80211_i.h
		patching file net/mac80211/iface.c
		patching file net/mac80211/link.c
		patching file net/mac80211/mac80211.mod.c
		patching file net/mac80211/mlme.c
		patching file net/mac80211/util.c

	* Compile mac80211 folder 

	.. code-block:: shell

                test:~$ sudo make -C . M=net/mac80211/
		
	* Insert mac80211 module

	.. code-block:: shell

                test:~$ sudo insmod ./net/mac80211/mac80211.ko		

	.. tab-set::

		.. tab-item:: Hardware simulator : run hostapd and supplicant with mac80211_hwsim in open mode

			:doc:`../../wi-fi_mac80211_hwsim/open_mode/open_mode`

	.. tab-set::

		.. tab-item:: Intel chipset : if your wifi chipset is intel follow below link

        	        :doc:`../../wi-fi_chipset/intel_wi-fi_6_AX200/wi-fi_intel_Wi-Fi_6_AX200`

	.. tab-set::

		.. tab-item:: Realtek chipset : if your wifi chipset is realtek follow below link

        	        :doc:`../../wi-fi_chipset/realtek_TP-Link_TL-WN722N/wi-fi_realtek_RTL8188EUS`

	.. tab-set::

		.. tab-item:: Netgear chipset : if your wifi chipset is netgear follow below link
	
        	        :doc:`../../wi-fi_chipset/netgear_A6210/wi-fi_netgear_A6210`

	.. tab-set::
	
		.. tab-item:: Atheros chipset : if your wifi chipset is atheros follow below link

        	        :doc:`../../wi-fi_chipset/atheros_AR9271/wi-fi_atheros_AR9271`


.. _wifi_ldd_wi-fi_dev_driver_ques5_step_6:
  
.. tab-set::

   .. tab-item:: Wireshark capture

	* Download file to check wireshark output

	:download:`send_deauth_after_auth_res.pcapng <send_deauth_after_auth_res.pcapng>`

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                * Check for deauthentication packet

		* Check packet 141 and 142

		* Observe 141 is authentication response packet and 142 is deauthentication packet

	.. image:: send_deauth_after_auth_res_wireshark_image.png
                :alt: Diagram
                :width: 800
                :height: 400