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The modules rfcomm (BT_RFCOMM), bnep (BT_BNEP), hidp (BT_HIDP), and bluetooth_6lowpan (BT_6LOWPAN) are dependent on the bluetooth module (BT, tristate) only transitively through the boolean BT_BREDR for the first three and through the boolean BT_LE for the bluetooth_6lowpan. Therefore, the modules can be selected as built-in even if the BT=m. The combination of BT=m and =y for the said modules leads to the kernel build system silently ignoring those modules, without ever compiling them as built-in or as loadable modules. Add BT as a direct dependency to the Kconfig of rfcomm, bnep, hidp, and bluetooth_6lowpan. The modules set to =y when BT=m will default to =m, rather then getting silently ignored by the build system. Signed-off-by: Iva Kasprzaková <iva@yenya.net> Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
149 lines
4.4 KiB
Plaintext
149 lines
4.4 KiB
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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#
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# Bluetooth subsystem configuration
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#
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menuconfig BT
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tristate "Bluetooth subsystem support"
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depends on !S390
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depends on RFKILL || !RFKILL
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select CRC16
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select CRYPTO
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select CRYPTO_LIB_AES
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select CRYPTO_LIB_AES_CBC_MACS
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select CRYPTO_ECDH
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help
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Bluetooth is low-cost, low-power, short-range wireless technology.
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It was designed as a replacement for cables and other short-range
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technologies like IrDA. Bluetooth operates in personal area range
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that typically extends up to 10 meters. More information about
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Bluetooth can be found at <https://www.bluetooth.com/>.
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Linux Bluetooth subsystem consist of several layers:
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Bluetooth Core
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HCI device and connection manager, scheduler
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SCO audio links
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L2CAP (Logical Link Control and Adaptation Protocol)
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SMP (Security Manager Protocol) on LE (Low Energy) links
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ISO isochronous links
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HCI Device drivers (Interface to the hardware)
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RFCOMM Module (RFCOMM Protocol)
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BNEP Module (Bluetooth Network Encapsulation Protocol)
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HIDP Module (Human Interface Device Protocol)
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Say Y here to compile Bluetooth support into the kernel or say M to
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compile it as module (bluetooth).
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To use Linux Bluetooth subsystem, you will need several user-space
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utilities like hciconfig and bluetoothd. These utilities and updates
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to Bluetooth kernel modules are provided in the BlueZ packages. For
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more information, see <http://www.bluez.org/>.
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config BT_BREDR
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bool "Bluetooth Classic (BR/EDR) features"
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depends on BT
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default y
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help
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Bluetooth Classic includes support for Basic Rate (BR)
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available with Bluetooth version 1.0b or later and support
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for Enhanced Data Rate (EDR) available with Bluetooth
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version 2.0 or later.
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source "net/bluetooth/rfcomm/Kconfig"
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source "net/bluetooth/bnep/Kconfig"
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source "net/bluetooth/hidp/Kconfig"
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config BT_LE
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bool "Bluetooth Low Energy (LE) features"
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depends on BT
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default y
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help
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Bluetooth Low Energy includes support low-energy physical
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layer available with Bluetooth version 4.0 or later.
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config BT_LE_L2CAP_ECRED
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bool "Bluetooth L2CAP Enhanced Credit Flow Control"
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depends on BT_LE
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default y
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help
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Bluetooth Low Energy L2CAP Enhanced Credit Flow Control available with
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Bluetooth version 5.2 or later.
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This can be overridden by passing bluetooth.enable_ecred=[1|0]
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on the kernel commandline.
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config BT_6LOWPAN
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tristate "Bluetooth 6LoWPAN support"
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depends on BT && BT_LE && 6LOWPAN
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help
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IPv6 compression over Bluetooth Low Energy.
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config BT_LEDS
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bool "Enable LED triggers"
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depends on BT
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depends on LEDS_CLASS
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select LEDS_TRIGGERS
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help
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This option selects a few LED triggers for different
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Bluetooth events.
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config BT_MSFTEXT
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bool "Enable Microsoft extensions"
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depends on BT
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help
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This options enables support for the Microsoft defined HCI
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vendor extensions.
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config BT_AOSPEXT
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bool "Enable Android Open Source Project extensions"
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depends on BT
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help
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This options enables support for the Android Open Source
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Project defined HCI vendor extensions.
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config BT_DEBUGFS
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bool "Export Bluetooth internals in debugfs"
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depends on BT && DEBUG_FS
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default y
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help
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Provide extensive information about internal Bluetooth states
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in debugfs.
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config BT_SELFTEST
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bool "Bluetooth self testing support"
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depends on BT && DEBUG_KERNEL
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help
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Run self tests when initializing the Bluetooth subsystem. This
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is a developer option and can cause significant delay when booting
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the system.
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When the Bluetooth subsystem is built as module, then the test
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cases are run first thing at module load time. When the Bluetooth
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subsystem is compiled into the kernel image, then the test cases
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are run late in the initcall hierarchy.
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config BT_SELFTEST_ECDH
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bool "ECDH test cases"
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depends on BT_LE && BT_SELFTEST
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help
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Run test cases for ECDH cryptographic functionality used by the
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Bluetooth Low Energy Secure Connections feature.
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config BT_SELFTEST_SMP
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bool "SMP test cases"
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depends on BT_LE && BT_SELFTEST
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help
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Run test cases for SMP cryptographic functionality, including both
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legacy SMP as well as the Secure Connections features.
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config BT_FEATURE_DEBUG
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bool "Enable runtime option for debugging statements"
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depends on BT && !DYNAMIC_DEBUG
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help
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This provides an option to enable/disable debugging statements
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at runtime via the experimental features interface.
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source "drivers/bluetooth/Kconfig"
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