Bluetooth

L2cap under
network/protocols/l2cap :
Provides socket interface to have l2cap channels. L2CAP offers connection oriented and connectionless sockets. But bluetooth stack as this point has no interchangeability with TCP/IP, A Higher level Bluetooth profile must be implemented

HCI under
src/add-ons/kernel/bluetooth :
Here we have 2 modules, one for handling global bluetooth data structures such as connection handles and L2cap channels, and frames

H2generic under
src/add-ons/kernel/drivers/bluetooth
The USB driver, implementing the H2 transport Bluetooth kit under src/kit/bluetooth C++ implementation based on JSR82 api

Bluetooth Server under
src/servers/bluetooth
Basically handling opened devices (local connected fisically in our system) and forwaring kit calls to them

Bluetooth Preferences under
src/preferences/bluetooth
Configuration using the kit

Test applications under
src/tests/kits/bluetooth

There is a small prototype component which is not here documented below src/add-ons/bluetooth/ResetLocalDevice. Its intention was to be an add-on of bluetooth preferences, So that new HCI commands could be customized by users or external developers. I did not like at the end the idea, I did not find the flexibility I wanted.

Links:
​Haiku Bluetooth blog
​Bluetooth resorce
​Bluetooth on wikipedia
​Bluetooth docs