|  | # | 
|  | # Bluetooth subsystem configuration | 
|  | # | 
|  |  | 
|  | menuconfig BT | 
|  | tristate "Bluetooth subsystem support" | 
|  | depends on NET && !S390 | 
|  | depends on RFKILL || !RFKILL | 
|  | select CRYPTO | 
|  | 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) | 
|  | HCI Device drivers (Interface to the hardware) | 
|  | SCO Module (SCO audio links) | 
|  | L2CAP Module (Logical Link Control and Adaptation Protocol) | 
|  | RFCOMM Module (RFCOMM Protocol) | 
|  | BNEP Module (Bluetooth Network Encapsulation Protocol) | 
|  | CMTP Module (CAPI Message Transport Protocol) | 
|  | HIDP Module (Human Interface Device Protocol) | 
|  | SMP Module (Security Manager 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/>. | 
|  |  | 
|  | if BT != n | 
|  |  | 
|  | config BT_L2CAP | 
|  | bool "L2CAP protocol support" | 
|  | select CRC16 | 
|  | select CRYPTO | 
|  | select CRYPTO_BLKCIPHER | 
|  | select CRYPTO_AES | 
|  | select CRYPTO_ECB | 
|  | help | 
|  | L2CAP (Logical Link Control and Adaptation Protocol) provides | 
|  | connection oriented and connection-less data transport.  L2CAP | 
|  | support is required for most Bluetooth applications. | 
|  |  | 
|  | Also included is support for SMP (Security Manager Protocol) which | 
|  | is the security layer on top of LE (Low Energy) links. | 
|  |  | 
|  | config BT_SCO | 
|  | bool "SCO links support" | 
|  | help | 
|  | SCO link provides voice transport over Bluetooth.  SCO support is | 
|  | required for voice applications like Headset and Audio. | 
|  |  | 
|  | endif | 
|  |  | 
|  | source "net/bluetooth/rfcomm/Kconfig" | 
|  |  | 
|  | source "net/bluetooth/bnep/Kconfig" | 
|  |  | 
|  | source "net/bluetooth/cmtp/Kconfig" | 
|  |  | 
|  | source "net/bluetooth/hidp/Kconfig" | 
|  |  | 
|  | source "drivers/bluetooth/Kconfig" | 
|  |  |