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_LE 65 config BT_LE
66 bool "Bluetooth Low Energy (LE) featur 66 bool "Bluetooth Low Energy (LE) features"
67 depends on BT 67 depends on BT
68 default y 68 default y
69 help 69 help
70 Bluetooth Low Energy includes suppor 70 Bluetooth Low Energy includes support low-energy physical
71 layer available with Bluetooth versi 71 layer available with Bluetooth version 4.0 or later.
72 72
73 config BT_LE_L2CAP_ECRED 73 config BT_LE_L2CAP_ECRED
74 bool "Bluetooth L2CAP Enhanced Credit 74 bool "Bluetooth L2CAP Enhanced Credit Flow Control"
75 depends on BT_LE 75 depends on BT_LE
76 default y 76 default y
77 help 77 help
78 Bluetooth Low Energy L2CAP Enhanced 78 Bluetooth Low Energy L2CAP Enhanced Credit Flow Control available with
79 Bluetooth version 5.2 or later. 79 Bluetooth version 5.2 or later.
80 80
81 This can be overridden by passing bl 81 This can be overridden by passing bluetooth.enable_ecred=[1|0]
82 on the kernel commandline. 82 on the kernel commandline.
83 83
84 config BT_6LOWPAN 84 config BT_6LOWPAN
85 tristate "Bluetooth 6LoWPAN support" 85 tristate "Bluetooth 6LoWPAN support"
86 depends on BT_LE && 6LOWPAN 86 depends on BT_LE && 6LOWPAN
87 help 87 help
88 IPv6 compression over Bluetooth Low 88 IPv6 compression over Bluetooth Low Energy.
89 89
90 config BT_LEDS 90 config BT_LEDS
91 bool "Enable LED triggers" 91 bool "Enable LED triggers"
92 depends on BT 92 depends on BT
93 depends on LEDS_CLASS 93 depends on LEDS_CLASS
94 select LEDS_TRIGGERS 94 select LEDS_TRIGGERS
95 help 95 help
96 This option selects a few LED trigge 96 This option selects a few LED triggers for different
97 Bluetooth events. 97 Bluetooth events.
98 98
99 config BT_MSFTEXT 99 config BT_MSFTEXT
100 bool "Enable Microsoft extensions" 100 bool "Enable Microsoft extensions"
101 depends on BT 101 depends on BT
102 help 102 help
103 This options enables support for the 103 This options enables support for the Microsoft defined HCI
104 vendor extensions. 104 vendor extensions.
105 105
106 config BT_AOSPEXT 106 config BT_AOSPEXT
107 bool "Enable Android Open Source Proje 107 bool "Enable Android Open Source Project extensions"
108 depends on BT 108 depends on BT
109 help 109 help
110 This options enables support for the 110 This options enables support for the Android Open Source
111 Project defined HCI vendor extension 111 Project defined HCI vendor extensions.
112 112
113 config BT_DEBUGFS 113 config BT_DEBUGFS
114 bool "Export Bluetooth internals in de 114 bool "Export Bluetooth internals in debugfs"
115 depends on BT && DEBUG_FS 115 depends on BT && DEBUG_FS
116 default y 116 default y
117 help 117 help
118 Provide extensive information about 118 Provide extensive information about internal Bluetooth states
119 in debugfs. 119 in debugfs.
120 120
121 config BT_SELFTEST 121 config BT_SELFTEST
122 bool "Bluetooth self testing support" 122 bool "Bluetooth self testing support"
123 depends on BT && DEBUG_KERNEL 123 depends on BT && DEBUG_KERNEL
124 help 124 help
125 Run self tests when initializing the 125 Run self tests when initializing the Bluetooth subsystem. This
126 is a developer option and can cause 126 is a developer option and can cause significant delay when booting
127 the system. 127 the system.
128 128
129 When the Bluetooth subsystem is buil 129 When the Bluetooth subsystem is built as module, then the test
130 cases are run first thing at module 130 cases are run first thing at module load time. When the Bluetooth
131 subsystem is compiled into the kerne 131 subsystem is compiled into the kernel image, then the test cases
132 are run late in the initcall hierarc 132 are run late in the initcall hierarchy.
133 133
134 config BT_SELFTEST_ECDH 134 config BT_SELFTEST_ECDH
135 bool "ECDH test cases" 135 bool "ECDH test cases"
136 depends on BT_LE && BT_SELFTEST 136 depends on BT_LE && BT_SELFTEST
137 help 137 help
138 Run test cases for ECDH cryptographi 138 Run test cases for ECDH cryptographic functionality used by the
139 Bluetooth Low Energy Secure Connecti 139 Bluetooth Low Energy Secure Connections feature.
140 140
141 config BT_SELFTEST_SMP 141 config BT_SELFTEST_SMP
142 bool "SMP test cases" 142 bool "SMP test cases"
143 depends on BT_LE && BT_SELFTEST 143 depends on BT_LE && BT_SELFTEST
144 help 144 help
145 Run test cases for SMP cryptographic 145 Run test cases for SMP cryptographic functionality, including both
146 legacy SMP as well as the Secure Con 146 legacy SMP as well as the Secure Connections features.
147 147
148 config BT_FEATURE_DEBUG 148 config BT_FEATURE_DEBUG
149 bool "Enable runtime option for debugg 149 bool "Enable runtime option for debugging statements"
150 depends on BT && !DYNAMIC_DEBUG 150 depends on BT && !DYNAMIC_DEBUG
151 help 151 help
152 This provides an option to enable/di 152 This provides an option to enable/disable debugging statements
153 at runtime via the experimental feat 153 at runtime via the experimental features interface.
154 154
155 source "drivers/bluetooth/Kconfig" 155 source "drivers/bluetooth/Kconfig"
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