Missing BT_POWER option for l2cap sockets in bluetooth.h?

Missing BT_POWER option for l2cap sockets in bluetooth.h?

[Mathieu Laurendeau]

Hello,

I believe the following defines are missing in the bluetooth.h file:

#define BT_POWER        9
struct bt_power {
         uint8_t force_active;
};
#define BT_POWER_FORCE_ACTIVE_OFF 0
#define BT_POWER_FORCE_ACTIVE_ON 1

Regards,
Mathieu

Re: Missing BT_POWER option for l2cap sockets in bluetooth.h?

[Johan Hedberg]

Hi Mathieu,

On Mon, Dec 02, 2013, Mathieu Laurendeau wrote:
> I believe the following defines are missing in the bluetooth.h file:
> 
> #define BT_POWER        9
> struct bt_power {
>         uint8_t force_active;
> };
> #define BT_POWER_FORCE_ACTIVE_OFF 0
> #define BT_POWER_FORCE_ACTIVE_ON 1

I think the only user of this has been pre-4.2 Android versions
(considering that the feature came from Android developers), which is
probably why this never made it to bluez.git. Anyway, I just pushed a
patch to add it there.

What are you planning to use this for? Do you have a patch to contribute
to our A2DP implementation?

Johan

Re: Missing BT_POWER option for l2cap sockets in bluetooth.h?

[Mathieu Laurendeau]

On Tue, Dec 03, 2013, Johan Hedberg wrote:
> What are you planning to use this for?
I'm working on a software [1] that can make a PC take the identity of a 
Sixaxis and control a PS3 over bluetooth. It worked fine until kernel 
3.1 from which there was a connection issue (a variable latency of at 
least 4s). I tried tweaking the flush timeout, but it was not 
concluding. Lately I took a look at the kernel source code and saw the 
BT_POWER option was introduced in kernel 3.1. I turned it off and the 
latency disappeared.

Thanks for the patch,

Mathieu

[1] https://github.com/matlo/GIMX