[Bluez-users] input service leaking l2cap connections

[Bluez-users] input service leaking l2cap connections

[Dick]

Hi,

I still have some trouble with the input service and I think I've found
something related which is reproduceable.

If a device is reconnecting a lot the l2cap table in /sys/class/bluetooth/l2cap
is growing with connections (which aren't closed).

Try the following with a HID input device:

1. Start and configure the input service for the device
2. Start hcidump
3. Power off the input device
4. Wait until "Disconn complete" appear in hcidump
5. Power on the input device
6. Repeat from step 3

If you look at:
sort /sys/class/bluetooth/l2cap |uniq -c

You will see a huge number of connections from the input device.

greetings,
Dick


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Re: [Bluez-users] input service leaking l2cap connections

[Claudio Takahasi]

Hi Dick,

I was not able to reproduce the reported problem. Could you please
send me more details? Try reproduce the problem in the latest release
(3.18) and share your hcidump.

On 9/7/07, Dick <dick@mrns.nl> wrote:
> Hi,
>
> I still have some trouble with the input service and I think I've found
> something related which is reproduceable.
>
> If a device is reconnecting a lot the l2cap table in /sys/class/bluetooth/l2cap
> is growing with connections (which aren't closed).
>
> Try the following with a HID input device:
>
> 1. Start and configure the input service for the device
[Claudio Takahasi]
After call CreateDevice how are you connecting the input? Device
initiated connection or calling Device.Connect() ?

> 2. Start hcidump
> 3. Power off the input device
> 4. Wait until "Disconn complete" appear in hcidump
> 5. Power on the input device
[Claudio Takahasi]
how are you reconnecting?

> 6. Repeat from step 3
>
> If you look at:
> sort /sys/class/bluetooth/l2cap |uniq -c
>
> You will see a huge number of connections from the input device.
>
> greetings,
> Dick

BR,
Claudio Takahasi.

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Re: [Bluez-users] input service leaking l2cap connections

[Dick]

> I was not able to reproduce the reported problem. Could you please
> send me more details? Try reproduce the problem in the latest release
> (3.18) and share your hcidump.
I'm using the latest bluez release and a almost-latest kernel
(2.6.22-gentoo-r6).

On 9/7/07, Dick <dick@mr...> wrote:
> > Try the following with a HID input device:
> >
> > 1. Start and configure the input service for the device
> [Claudio Takahasi]
> After call CreateDevice how are you connecting the input? Device
> initiated connection or calling Device.Connect() ?
Device initiated.

> 2. Start hcidump
> 3. Power off the input device
> 4. Wait until "Disconn complete" appear in hcidump
Well, you *shouldn't* wait until "Disconn complete" during the
"initialisation", go to step 5 just before the "Disconn complete".
> 5. Power on the input device, the device should be reconnected
initiated by the device.
> 6. Repeat from step 3

I've posted this before; I've got another problem with the dinovo
desktop.

1. Start and configure the input service
2. Let the devices initiate the connections
3. Use the devices
4. Wait until the devices go idle
5. Wake the devices up

Result:
- hcidump will show you input from the devices
- hcitool con will show you the input devices are connected
- the input events aren't registed by the input service (keyboard /
mouse won't work)

I hope this helps,

TIA,
Dick

PS. The bluez gmane archive isn't updated anymore!


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