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From: "Keren, Doron" <doronkeren@ti.com>
To: victor yeo <victoryeo1974@gmail.com>
CC: "linux-bluetooth@vger.kernel.org" <linux-bluetooth@vger.kernel.org>
Subject: RE: BT LMP
Date: Thu, 5 Jul 2012 10:19:19 +0000
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> -----Original Message-----
> From: victor yeo [mailto:victoryeo1974@gmail.com]
> Sent: Thursday, July 05, 2012 12:10 PM
> To: Keren, Doron
> Cc: linux-bluetooth@vger.kernel.org
> Subject: Re: BT LMP
> 
> On Thu, Jul 5, 2012 at 4:25 PM, Keren, Doron <doronkeren@ti.com> wrote:
> > Hi Victor,
> >
> > The LMP not_accepted event will lead to Authentication failure.
> > Some devices will then initiate disconnection with error code :
> > Authentication Failure error code (0x05).
> >
> > Thanks,
> > Doron Keren
> > Texas Instruments
> >
> >> -----Original Message-----
> >> From: linux-bluetooth-owner@vger.kernel.org [mailto:linux-bluetooth-
> >> owner@vger.kernel.org] On Behalf Of victor yeo
> >> Sent: Thursday, July 05, 2012 10:43 AM
> >> To: Marcel Holtmann
> >> Cc: linux-bluetooth@vger.kernel.org
> >> Subject: Re: BT LMP
> >>
> >> Hi Marcel,
> >>
> >> When LMP_not_accepted is received by Bluetooth Chip's firmware, it
> >> will send a HCI event to the linux kernel bluetooth portion. Do i
> >> understand correctly? What is the HCI event name?
> >>
> >> Thanks,
> >> Victor
> >>
> >> On Thu, Jul 5, 2012 at 3:20 PM, Marcel Holtmann <marcel@holtmann.org>
> >> wrote:
> >> > Hi Victor,
> >> >
> >> >> Anyone know which part of linux kernel processes the LMP au_rand and
> >> >> LMP not_accepted event?
> >> >>
> >> >> I want to modify the Bluetooth kernel code so that when it receives
> >> >> LMP not_accepted event, it will do re-pairing.
> >> >
> >> > LMP is implemented in the Bluetooth chip's firmware and not the
> kernel.
> >> >
> >> > Regards
> >> >
> >> > Marcel
> >> >
> >> >
> >> --
> 
> Hi Doron,
> 
> Will the hci_auth_complete_evt() function in net/bluetooth/hci_event.c
> handle the hci error code?
> 
> Thanks,
> Victor

Hi Victor,

As I can read in the code the hci_auth_complete_evt() call mgmt_auth_failed() on failure. The mgmt_auth_failed() function just prints
The fail status number. You can add your own code to do re-pairing several times.

Thanks,
Doron