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From: Andre Guedes <andre.guedes@openbossa.org>
Date: Wed, 4 Dec 2013 12:35:09 -0200
Message-ID: <CACJA=fWLf7wAmgooAkmbH3e2R+AE9dbfutvbjTewkp+5bJkmeQ@mail.gmail.com>
Subject: Re: [RFC v3 00/12] LE auto connection and connection parameters
To: "linux-bluetooth@vger.kernel.org" <linux-bluetooth@vger.kernel.org>
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Ping.

On Wed, Nov 20, 2013 at 7:08 PM, Andre Guedes
<andre.guedes@openbossa.org> wrote:
> Hi all,
>
> The main changes from the previous version are:
>   * Debugfs interface to add auto connect address instead of new mgmt
>     commands.
>   * We always stop LE scanning in favor of connection establishment even if
>     the controller supports scanning and connection at the same time.
>   * Background scanning is now controlled in one single place (hci_update_
>     background_scan function).
>   * RCU was replaced by hdev->lock to protect hdev->le_conn_params list. After
>     all the changes since the original version of this patch set, I realized
>     we always operate on hdev->le_conn_params with hdev->lock held so there is
>     no point in use RCU to protect this list.
>
> In order to test the LE auto connection mechanism please follow the
> instructions below.
>
> To add a new auto connection address we write on le_auto_conn file following
> the format <address> <address type> <auto_connect>.
>
> The <address type> values are:
>   * 0 for public address
>   * 1 for random address
>
> The <auto_connect> values are (for more details see struct hci_conn_params):
>   * 0 for disabled
>   * 1 for always
>   * 2 for link loss
>
> So for instance, if you want the kernel autonomously establishes connections
> with device AA:BB:CC:DD:EE:FF (public address) every time the device enters in
> connectable mode (starts advertising), you should run the command:
> $ echo "AA:BB:CC:DD:EE:FF 0 1" > /sys/kernel/debug/bluetooth/hci0/le_auto_conn
>
> To get the list of connection parameters configured in kernel, read the
> le_auto_conn file:
> $ cat /sys/kernel/debug/bluetooth/hci0/le_auto_conn
>
> Finally, to clear the connection parameters list, write an empty string:
> $ echo "" > /sys/kernel/debug/bluetooth/hci0/le_auto_conn
>
> Regards,
>
> Andre Guedes
>
>
> Andre Guedes (12):
>   Bluetooth: Save connection interval parameters in hci_conn
>   Bluetooth: Group list_head fields from strcut hci_dev together
>   Bluetooth: Introduce connection parameters list
>   Bluetooth: Use connection parameters if any
>   Bluetooth: Stop scanning on LE connection
>   Bluetooth: Introduce hdev->pend_le_conn list
>   Bluetooth: Introduce LE auto connection infrastructure
>   Bluetooth: Re-enable background scan in case of error
>   Bluetooth: Temporarily stop background scanning on discovery
>   Bluetooth: Auto connection and power on
>   Bleutooth: Add support for auto connect options
>   Bluetooth: Add le_auto_conn file on debugfs
>
>  include/net/bluetooth/hci_core.h |  43 +++++-
>  net/bluetooth/hci_conn.c         |  39 ++++-
>  net/bluetooth/hci_core.c         | 318 +++++++++++++++++++++++++++++++++++++++
>  net/bluetooth/hci_event.c        |  60 ++++++++
>  net/bluetooth/mgmt.c             |  25 ++-
>  5 files changed, 473 insertions(+), 12 deletions(-)
>
> --
> 1.8.4
>