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_BLKCIPHER
13 select CRYPTO_LIB_AES !! 13 select CRYPTO_AES
14 imply CRYPTO_AES <<
15 select CRYPTO_CMAC 14 select CRYPTO_CMAC
16 select CRYPTO_ECB 15 select CRYPTO_ECB
17 select CRYPTO_SHA256 16 select CRYPTO_SHA256
18 select CRYPTO_ECDH 17 select CRYPTO_ECDH
19 help 18 help
20 Bluetooth is low-cost, low-power, sh 19 Bluetooth is low-cost, low-power, short-range wireless technology.
21 It was designed as a replacement for 20 It was designed as a replacement for cables and other short-range
22 technologies like IrDA. Bluetooth o 21 technologies like IrDA. Bluetooth operates in personal area range
23 that typically extends up to 10 mete 22 that typically extends up to 10 meters. More information about
24 Bluetooth can be found at <https://w !! 23 Bluetooth can be found at <http://www.bluetooth.com/>.
25 24
26 Linux Bluetooth subsystem consist of 25 Linux Bluetooth subsystem consist of several layers:
27 Bluetooth Core 26 Bluetooth Core
28 HCI device and connection mana 27 HCI device and connection manager, scheduler
29 SCO audio links 28 SCO audio links
30 L2CAP (Logical Link Control an 29 L2CAP (Logical Link Control and Adaptation Protocol)
31 SMP (Security Manager Protocol 30 SMP (Security Manager Protocol) on LE (Low Energy) links
32 ISO isochronous links <<
33 HCI Device drivers (Interface to 31 HCI Device drivers (Interface to the hardware)
34 RFCOMM Module (RFCOMM Protocol) 32 RFCOMM Module (RFCOMM Protocol)
35 BNEP Module (Bluetooth Network En 33 BNEP Module (Bluetooth Network Encapsulation Protocol)
36 CMTP Module (CAPI Message Transpo 34 CMTP Module (CAPI Message Transport Protocol)
37 HIDP Module (Human Interface Devi 35 HIDP Module (Human Interface Device Protocol)
38 36
39 Say Y here to compile Bluetooth supp 37 Say Y here to compile Bluetooth support into the kernel or say M to
40 compile it as module (bluetooth). 38 compile it as module (bluetooth).
41 39
42 To use Linux Bluetooth subsystem, yo 40 To use Linux Bluetooth subsystem, you will need several user-space
43 utilities like hciconfig and bluetoo 41 utilities like hciconfig and bluetoothd. These utilities and updates
44 to Bluetooth kernel modules are prov 42 to Bluetooth kernel modules are provided in the BlueZ packages. For
45 more information, see <http://www.bl 43 more information, see <http://www.bluez.org/>.
46 44
47 config BT_BREDR 45 config BT_BREDR
48 bool "Bluetooth Classic (BR/EDR) featu 46 bool "Bluetooth Classic (BR/EDR) features"
49 depends on BT 47 depends on BT
50 default y 48 default y
51 help 49 help
52 Bluetooth Classic includes support f 50 Bluetooth Classic includes support for Basic Rate (BR)
53 available with Bluetooth version 1.0 51 available with Bluetooth version 1.0b or later and support
54 for Enhanced Data Rate (EDR) availab 52 for Enhanced Data Rate (EDR) available with Bluetooth
55 version 2.0 or later. 53 version 2.0 or later.
56 54
57 source "net/bluetooth/rfcomm/Kconfig" 55 source "net/bluetooth/rfcomm/Kconfig"
58 56
59 source "net/bluetooth/bnep/Kconfig" 57 source "net/bluetooth/bnep/Kconfig"
60 58
61 source "net/bluetooth/cmtp/Kconfig" 59 source "net/bluetooth/cmtp/Kconfig"
62 60
63 source "net/bluetooth/hidp/Kconfig" 61 source "net/bluetooth/hidp/Kconfig"
64 62
>> 63 config BT_HS
>> 64 bool "Bluetooth High Speed (HS) features"
>> 65 depends on BT_BREDR
>> 66 default y
>> 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 79
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 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 <<
100 bool "Enable Microsoft extensions" <<
101 depends on BT <<
102 help <<
103 This options enables support for the <<
104 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 <<
113 config BT_DEBUGFS <<
114 bool "Export Bluetooth internals in de <<
115 depends on BT && DEBUG_FS <<
116 default y <<
117 help <<
118 Provide extensive information about <<
119 in debugfs. <<
120 <<
121 config BT_SELFTEST 95 config BT_SELFTEST
122 bool "Bluetooth self testing support" 96 bool "Bluetooth self testing support"
123 depends on BT && DEBUG_KERNEL 97 depends on BT && DEBUG_KERNEL
124 help 98 help
125 Run self tests when initializing the 99 Run self tests when initializing the Bluetooth subsystem. This
126 is a developer option and can cause 100 is a developer option and can cause significant delay when booting
127 the system. 101 the system.
128 102
129 When the Bluetooth subsystem is buil 103 When the Bluetooth subsystem is built as module, then the test
130 cases are run first thing at module 104 cases are run first thing at module load time. When the Bluetooth
131 subsystem is compiled into the kerne 105 subsystem is compiled into the kernel image, then the test cases
132 are run late in the initcall hierarc 106 are run late in the initcall hierarchy.
133 107
134 config BT_SELFTEST_ECDH 108 config BT_SELFTEST_ECDH
135 bool "ECDH test cases" 109 bool "ECDH test cases"
136 depends on BT_LE && BT_SELFTEST 110 depends on BT_LE && BT_SELFTEST
137 help 111 help
138 Run test cases for ECDH cryptographi 112 Run test cases for ECDH cryptographic functionality used by the
139 Bluetooth Low Energy Secure Connecti 113 Bluetooth Low Energy Secure Connections feature.
140 114
141 config BT_SELFTEST_SMP 115 config BT_SELFTEST_SMP
142 bool "SMP test cases" 116 bool "SMP test cases"
143 depends on BT_LE && BT_SELFTEST 117 depends on BT_LE && BT_SELFTEST
144 help 118 help
145 Run test cases for SMP cryptographic 119 Run test cases for SMP cryptographic functionality, including both
146 legacy SMP as well as the Secure Con 120 legacy SMP as well as the Secure Connections features.
147 121
148 config BT_FEATURE_DEBUG !! 122 config BT_DEBUGFS
149 bool "Enable runtime option for debugg !! 123 bool "Export Bluetooth internals in debugfs"
150 depends on BT && !DYNAMIC_DEBUG !! 124 depends on BT && DEBUG_FS
>> 125 default y
151 help 126 help
152 This provides an option to enable/di !! 127 Provide extensive information about internal Bluetooth states
153 at runtime via the experimental feat !! 128 in debugfs.
154 129
155 source "drivers/bluetooth/Kconfig" 130 source "drivers/bluetooth/Kconfig"
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