# SPDX-License-Identifier: GPL-2.0-only # # Bluetooth subsystem configuration # menuconfig BT tristate "Bluetooth subsystem support" depends on NET && !S390 depends on RFKILL || !RFKILL select CRC16 select CRYPTO select CRYPTO_BLKCIPHER select CRYPTO_AES select CRYPTO_CMAC select CRYPTO_ECB select CRYPTO_SHA256 select CRYPTO_ECDH help Bluetooth is low-cost, low-power, short-range wireless technology. It was designed as a replacement for cables and other short-range technologies like IrDA. Bluetooth operates in personal area range that typically extends up to 10 meters. More information about Bluetooth can be found at <http://www.bluetooth.com/>. Linux Bluetooth subsystem consist of several layers: Bluetooth Core HCI device and connection manager, scheduler SCO audio links L2CAP (Logical Link Control and Adaptation Protocol) SMP (Security Manager Protocol) on LE (Low Energy) links HCI Device drivers (Interface to the hardware) RFCOMM Module (RFCOMM Protocol) BNEP Module (Bluetooth Network Encapsulation Protocol) CMTP Module (CAPI Message Transport Protocol) HIDP Module (Human Interface Device Protocol) Say Y here to compile Bluetooth support into the kernel or say M to compile it as module (bluetooth). To use Linux Bluetooth subsystem, you will need several user-space utilities like hciconfig and bluetoothd. These utilities and updates to Bluetooth kernel modules are provided in the BlueZ packages. For more information, see <http://www.bluez.org/>. config BT_BREDR bool "Bluetooth Classic (BR/EDR) features" depends on BT default y help Bluetooth Classic includes support for Basic Rate (BR) available with Bluetooth version 1.0b or later and support for Enhanced Data Rate (EDR) available with Bluetooth version 2.0 or later. source "net/bluetooth/rfcomm/Kconfig" source "net/bluetooth/bnep/Kconfig" source "net/bluetooth/cmtp/Kconfig" source "net/bluetooth/hidp/Kconfig" config BT_HS bool "Bluetooth High Speed (HS) features" depends on BT_BREDR default y help Bluetooth High Speed includes support for off-loading Bluetooth connections via 802.11 (wifi) physical layer available with Bluetooth version 3.0 or later. config BT_LE bool "Bluetooth Low Energy (LE) features" depends on BT default y help Bluetooth Low Energy includes support low-energy physical layer available with Bluetooth version 4.0 or later. config BT_6LOWPAN tristate "Bluetooth 6LoWPAN support" depends on BT_LE && 6LOWPAN help IPv6 compression over Bluetooth Low Energy. config BT_LEDS bool "Enable LED triggers" depends on BT depends on LEDS_CLASS select LEDS_TRIGGERS help This option selects a few LED triggers for different Bluetooth events. config BT_SELFTEST bool "Bluetooth self testing support" depends on BT && DEBUG_KERNEL help Run self tests when initializing the Bluetooth subsystem. This is a developer option and can cause significant delay when booting the system. When the Bluetooth subsystem is built as module, then the test cases are run first thing at module load time. When the Bluetooth subsystem is compiled into the kernel image, then the test cases are run late in the initcall hierarchy. config BT_SELFTEST_ECDH bool "ECDH test cases" depends on BT_LE && BT_SELFTEST help Run test cases for ECDH cryptographic functionality used by the Bluetooth Low Energy Secure Connections feature. config BT_SELFTEST_SMP bool "SMP test cases" depends on BT_LE && BT_SELFTEST help Run test cases for SMP cryptographic functionality, including both legacy SMP as well as the Secure Connections features. config BT_DEBUGFS bool "Export Bluetooth internals in debugfs" depends on BT && DEBUG_FS default y help Provide extensive information about internal Bluetooth states in debugfs. source "drivers/bluetooth/Kconfig"