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 NET && !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 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
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 80
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 <<
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 <<
106 config BT_AOSPEXT <<
107 bool "Enable Android Open Source Proje <<
108 depends on BT <<
109 help <<
110 This options enables support for the <<
111 Project defined HCI vendor extension <<
112 102
113 config BT_DEBUGFS 103 config BT_DEBUGFS
114 bool "Export Bluetooth internals in de 104 bool "Export Bluetooth internals in debugfs"
115 depends on BT && DEBUG_FS 105 depends on BT && DEBUG_FS
116 default y 106 default y
117 help 107 help
118 Provide extensive information about 108 Provide extensive information about internal Bluetooth states
119 in debugfs. 109 in debugfs.
120 110
121 config BT_SELFTEST 111 config BT_SELFTEST
122 bool "Bluetooth self testing support" 112 bool "Bluetooth self testing support"
123 depends on BT && DEBUG_KERNEL 113 depends on BT && DEBUG_KERNEL
124 help 114 help
125 Run self tests when initializing the 115 Run self tests when initializing the Bluetooth subsystem. This
126 is a developer option and can cause 116 is a developer option and can cause significant delay when booting
127 the system. 117 the system.
128 118
129 When the Bluetooth subsystem is buil 119 When the Bluetooth subsystem is built as module, then the test
130 cases are run first thing at module 120 cases are run first thing at module load time. When the Bluetooth
131 subsystem is compiled into the kerne 121 subsystem is compiled into the kernel image, then the test cases
132 are run late in the initcall hierarc 122 are run late in the initcall hierarchy.
133 123
134 config BT_SELFTEST_ECDH 124 config BT_SELFTEST_ECDH
135 bool "ECDH test cases" 125 bool "ECDH test cases"
136 depends on BT_LE && BT_SELFTEST 126 depends on BT_LE && BT_SELFTEST
137 help 127 help
138 Run test cases for ECDH cryptographi 128 Run test cases for ECDH cryptographic functionality used by the
139 Bluetooth Low Energy Secure Connecti 129 Bluetooth Low Energy Secure Connections feature.
140 130
141 config BT_SELFTEST_SMP 131 config BT_SELFTEST_SMP
142 bool "SMP test cases" 132 bool "SMP test cases"
143 depends on BT_LE && BT_SELFTEST 133 depends on BT_LE && BT_SELFTEST
144 help 134 help
145 Run test cases for SMP cryptographic 135 Run test cases for SMP cryptographic functionality, including both
146 legacy SMP as well as the Secure Con 136 legacy SMP as well as the Secure Connections features.
147 137
148 config BT_FEATURE_DEBUG 138 config BT_FEATURE_DEBUG
149 bool "Enable runtime option for debugg 139 bool "Enable runtime option for debugging statements"
150 depends on BT && !DYNAMIC_DEBUG 140 depends on BT && !DYNAMIC_DEBUG
151 help 141 help
152 This provides an option to enable/di 142 This provides an option to enable/disable debugging statements
153 at runtime via the experimental feat 143 at runtime via the experimental features interface.
154 144
155 source "drivers/bluetooth/Kconfig" 145 source "drivers/bluetooth/Kconfig"
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