1# SPDX-License-Identifier: GPL-2.0-only 2# 3# Bluetooth subsystem configuration 4# 5 6menuconfig BT 7 tristate "Bluetooth subsystem support" 8 depends on NET && !S390 9 depends on RFKILL || !RFKILL 10 select CRC16 11 select CRYPTO 12 select CRYPTO_SKCIPHER 13 select CRYPTO_LIB_AES 14 imply CRYPTO_AES 15 select CRYPTO_CMAC 16 select CRYPTO_ECB 17 select CRYPTO_SHA256 18 select CRYPTO_ECDH 19 help 20 Bluetooth is low-cost, low-power, short-range wireless technology. 21 It was designed as a replacement for cables and other short-range 22 technologies like IrDA. Bluetooth operates in personal area range 23 that typically extends up to 10 meters. More information about 24 Bluetooth can be found at <http://www.bluetooth.com/>. 25 26 Linux Bluetooth subsystem consist of several layers: 27 Bluetooth Core 28 HCI device and connection manager, scheduler 29 SCO audio links 30 L2CAP (Logical Link Control and Adaptation Protocol) 31 SMP (Security Manager Protocol) on LE (Low Energy) links 32 HCI Device drivers (Interface to the hardware) 33 RFCOMM Module (RFCOMM Protocol) 34 BNEP Module (Bluetooth Network Encapsulation Protocol) 35 CMTP Module (CAPI Message Transport Protocol) 36 HIDP Module (Human Interface Device Protocol) 37 38 Say Y here to compile Bluetooth support into the kernel or say M to 39 compile it as module (bluetooth). 40 41 To use Linux Bluetooth subsystem, you will need several user-space 42 utilities like hciconfig and bluetoothd. These utilities and updates 43 to Bluetooth kernel modules are provided in the BlueZ packages. For 44 more information, see <http://www.bluez.org/>. 45 46config BT_BREDR 47 bool "Bluetooth Classic (BR/EDR) features" 48 depends on BT 49 default y 50 help 51 Bluetooth Classic includes support for Basic Rate (BR) 52 available with Bluetooth version 1.0b or later and support 53 for Enhanced Data Rate (EDR) available with Bluetooth 54 version 2.0 or later. 55 56source "net/bluetooth/rfcomm/Kconfig" 57 58source "net/bluetooth/bnep/Kconfig" 59 60source "net/bluetooth/cmtp/Kconfig" 61 62source "net/bluetooth/hidp/Kconfig" 63 64config BT_HS 65 bool "Bluetooth High Speed (HS) features" 66 depends on BT_BREDR 67 default y 68 help 69 Bluetooth High Speed includes support for off-loading 70 Bluetooth connections via 802.11 (wifi) physical layer 71 available with Bluetooth version 3.0 or later. 72 73config BT_LE 74 bool "Bluetooth Low Energy (LE) features" 75 depends on BT 76 default y 77 help 78 Bluetooth Low Energy includes support low-energy physical 79 layer available with Bluetooth version 4.0 or later. 80 81config BT_6LOWPAN 82 tristate "Bluetooth 6LoWPAN support" 83 depends on BT_LE && 6LOWPAN 84 help 85 IPv6 compression over Bluetooth Low Energy. 86 87config BT_LEDS 88 bool "Enable LED triggers" 89 depends on BT 90 depends on LEDS_CLASS 91 select LEDS_TRIGGERS 92 help 93 This option selects a few LED triggers for different 94 Bluetooth events. 95 96config BT_DEBUGFS 97 bool "Export Bluetooth internals in debugfs" 98 depends on BT && DEBUG_FS 99 default y 100 help 101 Provide extensive information about internal Bluetooth states 102 in debugfs. 103 104config BT_SELFTEST 105 bool "Bluetooth self testing support" 106 depends on BT && DEBUG_KERNEL 107 help 108 Run self tests when initializing the Bluetooth subsystem. This 109 is a developer option and can cause significant delay when booting 110 the system. 111 112 When the Bluetooth subsystem is built as module, then the test 113 cases are run first thing at module load time. When the Bluetooth 114 subsystem is compiled into the kernel image, then the test cases 115 are run late in the initcall hierarchy. 116 117config BT_SELFTEST_ECDH 118 bool "ECDH test cases" 119 depends on BT_LE && BT_SELFTEST 120 help 121 Run test cases for ECDH cryptographic functionality used by the 122 Bluetooth Low Energy Secure Connections feature. 123 124config BT_SELFTEST_SMP 125 bool "SMP test cases" 126 depends on BT_LE && BT_SELFTEST 127 help 128 Run test cases for SMP cryptographic functionality, including both 129 legacy SMP as well as the Secure Connections features. 130 131source "drivers/bluetooth/Kconfig" 132