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 32 ISO isochronous links
33 HCI Device drivers (Interface to 33 HCI Device drivers (Interface to the hardware)
34 RFCOMM Module (RFCOMM Protocol) 34 RFCOMM Module (RFCOMM Protocol)
35 BNEP Module (Bluetooth Network En 35 BNEP Module (Bluetooth Network Encapsulation Protocol)
36 CMTP Module (CAPI Message Transpo 36 CMTP Module (CAPI Message Transport Protocol)
37 HIDP Module (Human Interface Devi 37 HIDP Module (Human Interface Device Protocol)
38 38
39 Say Y here to compile Bluetooth supp 39 Say Y here to compile Bluetooth support into the kernel or say M to
40 compile it as module (bluetooth). 40 compile it as module (bluetooth).
41 41
42 To use Linux Bluetooth subsystem, yo 42 To use Linux Bluetooth subsystem, you will need several user-space
43 utilities like hciconfig and bluetoo 43 utilities like hciconfig and bluetoothd. These utilities and updates
44 to Bluetooth kernel modules are prov 44 to Bluetooth kernel modules are provided in the BlueZ packages. For
45 more information, see <http://www.bl 45 more information, see <http://www.bluez.org/>.
46 46
47 config BT_BREDR 47 config BT_BREDR
48 bool "Bluetooth Classic (BR/EDR) featu 48 bool "Bluetooth Classic (BR/EDR) features"
49 depends on BT 49 depends on BT
50 default y 50 default y
51 help 51 help
52 Bluetooth Classic includes support f 52 Bluetooth Classic includes support for Basic Rate (BR)
53 available with Bluetooth version 1.0 53 available with Bluetooth version 1.0b or later and support
54 for Enhanced Data Rate (EDR) availab 54 for Enhanced Data Rate (EDR) available with Bluetooth
55 version 2.0 or later. 55 version 2.0 or later.
56 56
57 source "net/bluetooth/rfcomm/Kconfig" 57 source "net/bluetooth/rfcomm/Kconfig"
58 58
59 source "net/bluetooth/bnep/Kconfig" 59 source "net/bluetooth/bnep/Kconfig"
60 60
61 source "net/bluetooth/cmtp/Kconfig" 61 source "net/bluetooth/cmtp/Kconfig"
62 62
63 source "net/bluetooth/hidp/Kconfig" 63 source "net/bluetooth/hidp/Kconfig"
64 64
>> 65 config BT_HS
>> 66 bool "Bluetooth High Speed (HS) features"
>> 67 depends on BT_BREDR
>> 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
65 config BT_LE 73 config BT_LE
66 bool "Bluetooth Low Energy (LE) featur 74 bool "Bluetooth Low Energy (LE) features"
67 depends on BT 75 depends on BT
68 default y 76 default y
69 help 77 help
70 Bluetooth Low Energy includes suppor 78 Bluetooth Low Energy includes support low-energy physical
71 layer available with Bluetooth versi 79 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 80
84 config BT_6LOWPAN 81 config BT_6LOWPAN
85 tristate "Bluetooth 6LoWPAN support" 82 tristate "Bluetooth 6LoWPAN support"
86 depends on BT_LE && 6LOWPAN 83 depends on BT_LE && 6LOWPAN
87 help 84 help
88 IPv6 compression over Bluetooth Low 85 IPv6 compression over Bluetooth Low Energy.
89 86
90 config BT_LEDS 87 config BT_LEDS
91 bool "Enable LED triggers" 88 bool "Enable LED triggers"
92 depends on BT 89 depends on BT
93 depends on LEDS_CLASS 90 depends on LEDS_CLASS
94 select LEDS_TRIGGERS 91 select LEDS_TRIGGERS
95 help 92 help
96 This option selects a few LED trigge 93 This option selects a few LED triggers for different
97 Bluetooth events. 94 Bluetooth events.
98 95
99 config BT_MSFTEXT 96 config BT_MSFTEXT
100 bool "Enable Microsoft extensions" 97 bool "Enable Microsoft extensions"
101 depends on BT 98 depends on BT
102 help 99 help
103 This options enables support for the 100 This options enables support for the Microsoft defined HCI
104 vendor extensions. 101 vendor extensions.
105 102
106 config BT_AOSPEXT 103 config BT_AOSPEXT
107 bool "Enable Android Open Source Proje 104 bool "Enable Android Open Source Project extensions"
108 depends on BT 105 depends on BT
109 help 106 help
110 This options enables support for the 107 This options enables support for the Android Open Source
111 Project defined HCI vendor extension 108 Project defined HCI vendor extensions.
112 109
113 config BT_DEBUGFS 110 config BT_DEBUGFS
114 bool "Export Bluetooth internals in de 111 bool "Export Bluetooth internals in debugfs"
115 depends on BT && DEBUG_FS 112 depends on BT && DEBUG_FS
116 default y 113 default y
117 help 114 help
118 Provide extensive information about 115 Provide extensive information about internal Bluetooth states
119 in debugfs. 116 in debugfs.
120 117
121 config BT_SELFTEST 118 config BT_SELFTEST
122 bool "Bluetooth self testing support" 119 bool "Bluetooth self testing support"
123 depends on BT && DEBUG_KERNEL 120 depends on BT && DEBUG_KERNEL
124 help 121 help
125 Run self tests when initializing the 122 Run self tests when initializing the Bluetooth subsystem. This
126 is a developer option and can cause 123 is a developer option and can cause significant delay when booting
127 the system. 124 the system.
128 125
129 When the Bluetooth subsystem is buil 126 When the Bluetooth subsystem is built as module, then the test
130 cases are run first thing at module 127 cases are run first thing at module load time. When the Bluetooth
131 subsystem is compiled into the kerne 128 subsystem is compiled into the kernel image, then the test cases
132 are run late in the initcall hierarc 129 are run late in the initcall hierarchy.
133 130
134 config BT_SELFTEST_ECDH 131 config BT_SELFTEST_ECDH
135 bool "ECDH test cases" 132 bool "ECDH test cases"
136 depends on BT_LE && BT_SELFTEST 133 depends on BT_LE && BT_SELFTEST
137 help 134 help
138 Run test cases for ECDH cryptographi 135 Run test cases for ECDH cryptographic functionality used by the
139 Bluetooth Low Energy Secure Connecti 136 Bluetooth Low Energy Secure Connections feature.
140 137
141 config BT_SELFTEST_SMP 138 config BT_SELFTEST_SMP
142 bool "SMP test cases" 139 bool "SMP test cases"
143 depends on BT_LE && BT_SELFTEST 140 depends on BT_LE && BT_SELFTEST
144 help 141 help
145 Run test cases for SMP cryptographic 142 Run test cases for SMP cryptographic functionality, including both
146 legacy SMP as well as the Secure Con 143 legacy SMP as well as the Secure Connections features.
147 144
148 config BT_FEATURE_DEBUG 145 config BT_FEATURE_DEBUG
149 bool "Enable runtime option for debugg 146 bool "Enable runtime option for debugging statements"
150 depends on BT && !DYNAMIC_DEBUG 147 depends on BT && !DYNAMIC_DEBUG
151 help 148 help
152 This provides an option to enable/di 149 This provides an option to enable/disable debugging statements
153 at runtime via the experimental feat 150 at runtime via the experimental features interface.
154 151
155 source "drivers/bluetooth/Kconfig" 152 source "drivers/bluetooth/Kconfig"
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