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# Bluetooth subsystem configuration
menuconfig BT
tristate "Bluetooth subsystem support"
depends on m
depends on NET && !S390
depends on RFKILL || !RFKILL
depends on CRC16
depends on CRYPTO
depends on CRYPTO_AES
depends on CRYPTO_CMAC
depends on CRYPTO_ECB
depends on CRYPTO_SHA256
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 <>.
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 <>.
config BT_BREDR
bool "Bluetooth Classic (BR/EDR) features"
depends on BT
default y
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
config BT_LE
bool "Bluetooth Low Energy (LE) features"
depends on BT
default y
config BT_6LOWPAN
tristate "Bluetooth 6LoWPAN support"
depends on m
depends on BT_LE && 6LOWPAN
IPv6 compression over Bluetooth Low Energy.
config BT_LEDS
bool "Enable LED triggers"
depends on BT
depends on LEDS_CLASS
This option selects a few LED triggers for different
Bluetooth events.
bool "Bluetooth self testing support"
depends on BT && DEBUG_KERNEL
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.
bool "ECDH test cases"
depends on BT_LE && BT_SELFTEST
Run test cases for ECDH cryptographic functionality used by the
Bluetooth Low Energy Secure Connections feature.
bool "SMP test cases"
depends on BT_LE && BT_SELFTEST
Run test cases for SMP cryptographic functionality, including both
legacy SMP as well as the Secure Connections features.
bool "Export Bluetooth internals in debugfs"
depends on BT && DEBUG_FS
default y
Provide extensive information about internal Bluetooth states
in debugfs.
source "drivers/bluetooth/Kconfig"