Re: Understanding Bluez mgmt events

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Hi Natalya,

On Tue, May 16, 2017, Natalya Rozhnova wrote:
> I'm trying to understand the mgmt events in Bluez.
> If I understand correctly, the MGMT_OP_... commands are first sent as following:
> 
> mgmt_send(adapter->mgmt, MGMT_OP_START_DISCOVERY, ...)
> 
> And then it should trigger a corresponding event like
> MGMT_EV_DISCOVERING, MGMT_EV_DEVICE_FOUND etc.
> 
> I'm quite lost in understanding who, where and how generates these
> MGMT_EV... events...
> Could anybody please explain this on a simple example or showing a
> piece of code in bluez sources where it is done...

The mgmt protocol is a protocol between user space and the kernel. User
space (normally bluetoothd) sends commands to the kernel, and the kernel
sends events to user space. You can find the kernel-side implementation
in net/bluetooth/mgmt.c.

Johan
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