1 # SPDX-License-Identifier: GPL-2.0-only 1 # SPDX-License-Identifier: GPL-2.0-only
2 # 2 #
3 # Bluetooth subsystem configuration 3 # Bluetooth subsystem configuration
4 # 4 #
5 5
6 menuconfig BT 6 menuconfig BT
7 tristate "Bluetooth subsystem support" 7 tristate "Bluetooth subsystem support"
8 depends on !S390 8 depends on !S390
9 depends on RFKILL || !RFKILL 9 depends on RFKILL || !RFKILL
10 select CRC16 10 select CRC16
11 select CRYPTO 11 select CRYPTO
12 select CRYPTO_SKCIPHER 12 select CRYPTO_SKCIPHER
13 select CRYPTO_LIB_AES 13 select CRYPTO_LIB_AES
14 imply CRYPTO_AES 14 imply CRYPTO_AES
15 select CRYPTO_CMAC 15 select CRYPTO_CMAC
16 select CRYPTO_ECB 16 select CRYPTO_ECB
17 select CRYPTO_SHA256 17 select CRYPTO_SHA256
18 select CRYPTO_ECDH 18 select CRYPTO_ECDH
19 help 19 help
20 Bluetooth is low-cost, low-power, sh 20 Bluetooth is low-cost, low-power, short-range wireless technology.
21 It was designed as a replacement for 21 It was designed as a replacement for cables and other short-range
22 technologies like IrDA. Bluetooth o 22 technologies like IrDA. Bluetooth operates in personal area range
23 that typically extends up to 10 mete 23 that typically extends up to 10 meters. More information about
24 Bluetooth can be found at <https://w 24 Bluetooth can be found at <https://www.bluetooth.com/>.
25 25
26 Linux Bluetooth subsystem consist of 26 Linux Bluetooth subsystem consist of several layers:
27 Bluetooth Core 27 Bluetooth Core
28 HCI device and connection mana 28 HCI device and connection manager, scheduler
29 SCO audio links 29 SCO audio links
30 L2CAP (Logical Link Control an 30 L2CAP (Logical Link Control and Adaptation Protocol)
31 SMP (Security Manager Protocol 31 SMP (Security Manager Protocol) on LE (Low Energy) links
32 ISO isochronous links <<
33 HCI Device drivers (Interface to 32 HCI Device drivers (Interface to the hardware)
34 RFCOMM Module (RFCOMM Protocol) 33 RFCOMM Module (RFCOMM Protocol)
35 BNEP Module (Bluetooth Network En 34 BNEP Module (Bluetooth Network Encapsulation Protocol)
36 CMTP Module (CAPI Message Transpo 35 CMTP Module (CAPI Message Transport Protocol)
37 HIDP Module (Human Interface Devi 36 HIDP Module (Human Interface Device Protocol)
38 37
39 Say Y here to compile Bluetooth supp 38 Say Y here to compile Bluetooth support into the kernel or say M to
40 compile it as module (bluetooth). 39 compile it as module (bluetooth).
41 40
42 To use Linux Bluetooth subsystem, yo 41 To use Linux Bluetooth subsystem, you will need several user-space
43 utilities like hciconfig and bluetoo 42 utilities like hciconfig and bluetoothd. These utilities and updates
44 to Bluetooth kernel modules are prov 43 to Bluetooth kernel modules are provided in the BlueZ packages. For
45 more information, see <http://www.bl 44 more information, see <http://www.bluez.org/>.
46 45
47 config BT_BREDR 46 config BT_BREDR
48 bool "Bluetooth Classic (BR/EDR) featu 47 bool "Bluetooth Classic (BR/EDR) features"
49 depends on BT 48 depends on BT
50 default y 49 default y
51 help 50 help
52 Bluetooth Classic includes support f 51 Bluetooth Classic includes support for Basic Rate (BR)
53 available with Bluetooth version 1.0 52 available with Bluetooth version 1.0b or later and support
54 for Enhanced Data Rate (EDR) availab 53 for Enhanced Data Rate (EDR) available with Bluetooth
55 version 2.0 or later. 54 version 2.0 or later.
56 55
57 source "net/bluetooth/rfcomm/Kconfig" 56 source "net/bluetooth/rfcomm/Kconfig"
58 57
59 source "net/bluetooth/bnep/Kconfig" 58 source "net/bluetooth/bnep/Kconfig"
60 59
61 source "net/bluetooth/cmtp/Kconfig" 60 source "net/bluetooth/cmtp/Kconfig"
62 61
63 source "net/bluetooth/hidp/Kconfig" 62 source "net/bluetooth/hidp/Kconfig"
64 63
>> 64 config BT_HS
>> 65 bool "Bluetooth High Speed (HS) features"
>> 66 depends on BT_BREDR
>> 67 help
>> 68 Bluetooth High Speed includes support for off-loading
>> 69 Bluetooth connections via 802.11 (wifi) physical layer
>> 70 available with Bluetooth version 3.0 or later.
>> 71
65 config BT_LE 72 config BT_LE
66 bool "Bluetooth Low Energy (LE) featur 73 bool "Bluetooth Low Energy (LE) features"
67 depends on BT 74 depends on BT
68 default y 75 default y
69 help 76 help
70 Bluetooth Low Energy includes suppor 77 Bluetooth Low Energy includes support low-energy physical
71 layer available with Bluetooth versi 78 layer available with Bluetooth version 4.0 or later.
72 <<
73 config BT_LE_L2CAP_ECRED <<
74 bool "Bluetooth L2CAP Enhanced Credit <<
75 depends on BT_LE <<
76 default y <<
77 help <<
78 Bluetooth Low Energy L2CAP Enhanced <<
79 Bluetooth version 5.2 or later. <<
80 <<
81 This can be overridden by passing bl <<
82 on the kernel commandline. <<
83 79
84 config BT_6LOWPAN 80 config BT_6LOWPAN
85 tristate "Bluetooth 6LoWPAN support" 81 tristate "Bluetooth 6LoWPAN support"
86 depends on BT_LE && 6LOWPAN 82 depends on BT_LE && 6LOWPAN
87 help 83 help
88 IPv6 compression over Bluetooth Low 84 IPv6 compression over Bluetooth Low Energy.
89 85
90 config BT_LEDS 86 config BT_LEDS
91 bool "Enable LED triggers" 87 bool "Enable LED triggers"
92 depends on BT 88 depends on BT
93 depends on LEDS_CLASS 89 depends on LEDS_CLASS
94 select LEDS_TRIGGERS 90 select LEDS_TRIGGERS
95 help 91 help
96 This option selects a few LED trigge 92 This option selects a few LED triggers for different
97 Bluetooth events. 93 Bluetooth events.
98 94
99 config BT_MSFTEXT 95 config BT_MSFTEXT
100 bool "Enable Microsoft extensions" 96 bool "Enable Microsoft extensions"
101 depends on BT 97 depends on BT
102 help 98 help
103 This options enables support for the 99 This options enables support for the Microsoft defined HCI
104 vendor extensions. 100 vendor extensions.
105 101
106 config BT_AOSPEXT 102 config BT_AOSPEXT
107 bool "Enable Android Open Source Proje 103 bool "Enable Android Open Source Project extensions"
108 depends on BT 104 depends on BT
109 help 105 help
110 This options enables support for the 106 This options enables support for the Android Open Source
111 Project defined HCI vendor extension 107 Project defined HCI vendor extensions.
112 108
113 config BT_DEBUGFS 109 config BT_DEBUGFS
114 bool "Export Bluetooth internals in de 110 bool "Export Bluetooth internals in debugfs"
115 depends on BT && DEBUG_FS 111 depends on BT && DEBUG_FS
116 default y 112 default y
117 help 113 help
118 Provide extensive information about 114 Provide extensive information about internal Bluetooth states
119 in debugfs. 115 in debugfs.
120 116
121 config BT_SELFTEST 117 config BT_SELFTEST
122 bool "Bluetooth self testing support" 118 bool "Bluetooth self testing support"
123 depends on BT && DEBUG_KERNEL 119 depends on BT && DEBUG_KERNEL
124 help 120 help
125 Run self tests when initializing the 121 Run self tests when initializing the Bluetooth subsystem. This
126 is a developer option and can cause 122 is a developer option and can cause significant delay when booting
127 the system. 123 the system.
128 124
129 When the Bluetooth subsystem is buil 125 When the Bluetooth subsystem is built as module, then the test
130 cases are run first thing at module 126 cases are run first thing at module load time. When the Bluetooth
131 subsystem is compiled into the kerne 127 subsystem is compiled into the kernel image, then the test cases
132 are run late in the initcall hierarc 128 are run late in the initcall hierarchy.
133 129
134 config BT_SELFTEST_ECDH 130 config BT_SELFTEST_ECDH
135 bool "ECDH test cases" 131 bool "ECDH test cases"
136 depends on BT_LE && BT_SELFTEST 132 depends on BT_LE && BT_SELFTEST
137 help 133 help
138 Run test cases for ECDH cryptographi 134 Run test cases for ECDH cryptographic functionality used by the
139 Bluetooth Low Energy Secure Connecti 135 Bluetooth Low Energy Secure Connections feature.
140 136
141 config BT_SELFTEST_SMP 137 config BT_SELFTEST_SMP
142 bool "SMP test cases" 138 bool "SMP test cases"
143 depends on BT_LE && BT_SELFTEST 139 depends on BT_LE && BT_SELFTEST
144 help 140 help
145 Run test cases for SMP cryptographic 141 Run test cases for SMP cryptographic functionality, including both
146 legacy SMP as well as the Secure Con 142 legacy SMP as well as the Secure Connections features.
147 143
148 config BT_FEATURE_DEBUG 144 config BT_FEATURE_DEBUG
149 bool "Enable runtime option for debugg 145 bool "Enable runtime option for debugging statements"
150 depends on BT && !DYNAMIC_DEBUG 146 depends on BT && !DYNAMIC_DEBUG
151 help 147 help
152 This provides an option to enable/di 148 This provides an option to enable/disable debugging statements
153 at runtime via the experimental feat 149 at runtime via the experimental features interface.
154 150
155 source "drivers/bluetooth/Kconfig" 151 source "drivers/bluetooth/Kconfig"
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