:orphan:

.. title:: BT_SMP_USB_HCI_CTLR_WORKAROUND

.. option:: CONFIG_BT_SMP_USB_HCI_CTLR_WORKAROUND

*Workaround for USB HCI controller out-of-order events*

Type: ``bool``

Help
====

.. code-block:: none

    This option enables support for USB HCI controllers that sometimes
    send out-of-order HCI events and ACL Data due to using different USB
    endpoints.
    Enabling this option will make the master role not require the
    encryption-change event to be received before accepting key-distribution
    data.
    It opens up for a potential vulnerability as the master cannot detect
    if the keys are distributed over an encrypted link.

Direct dependencies
===================

\ :option:`BT_TESTING <CONFIG_BT_TESTING>` && \ :option:`BT_SMP <CONFIG_BT_SMP>` && \ :option:`BT_CONN <CONFIG_BT_CONN>` && \ :option:`BT_HCI_HOST <CONFIG_BT_HCI_HOST>` && \ :option:`BT_HCI <CONFIG_BT_HCI>` && \ :option:`BT <CONFIG_BT>`

*(Includes any dependencies from ifs and menus.)*

Defaults
========

No defaults. Implicitly defaults to ``n``.

Kconfig definition
==================



At ``<Zephyr Subsystem>/bluetooth/host/Kconfig:347``

Included via ``Kconfig:8`` → ``Kconfig.zephyr:34`` → ``<Zephyr Subsystem>/Kconfig:9`` → ``<Zephyr Subsystem>/bluetooth/Kconfig:306``

Menu path: (Top) → Sub Systems and OS Services → Bluetooth → Security Manager Protocol support

.. code-block:: kconfig

    config BT_SMP_USB_HCI_CTLR_WORKAROUND
    	bool "Workaround for USB HCI controller out-of-order events"
    	depends on BT_TESTING && BT_SMP && BT_CONN && BT_HCI_HOST && BT_HCI && BT
    	help
    	  This option enables support for USB HCI controllers that sometimes
    	  send out-of-order HCI events and ACL Data due to using different USB
    	  endpoints.
    	  Enabling this option will make the master role not require the
    	  encryption-change event to be received before accepting key-distribution
    	  data.
    	  It opens up for a potential vulnerability as the master cannot detect
    	  if the keys are distributed over an encrypted link.

*(The 'depends on' condition includes propagated dependencies from ifs and menus.)*