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.

Direct dependencies¶

BT_TESTING && BT_SMP && BT_CONN && BT_HCI_HOST && BT_HCI && BT

(Includes any dependencies from ifs and menus.)

Defaults¶

No defaults. Implicitly defaults to n.

Kconfig definition¶

At <Zephyr>/subsys/bluetooth/host/Kconfig:411

Included via <Zephyr>/Kconfig:8 → <Zephyr>/Kconfig.zephyr:34 → <Zephyr>/subsys/Kconfig:9 → <Zephyr>/subsys/bluetooth/Kconfig:239

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

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.)