Hi all, In order to better support LE connection requirements, such as multiple connections and re-connections, we should support the general connection establishment procedure in kernel side. Today, we support only the direct connection establishment procedure which has some limitations and, therefore, requires extra connection management at user-space. According to the spec (Vol 3, Part C, section 9.3.6), the general procedure is described as follows: The host starts scanning for LE devices, once the device we want to connect to is in-range, the host stops scanning and initiates a connection. The procedure is terminated when the connection is established or when the host terminates the procedure. This RFC series implements the basic support for general connection procedure. The first patches do simple changes required to implement this new LE connection routine. It has not been well tested, but the basic LE connection and disconnection cases have been covered. This is an initial work, so it doesn't support multiple LE connection attempts at the same time (current kernel doesn't support too) and doesn't handle concurrent device discovery properly. The next steps are the following: 1. Cover some corner cases in this series. 2. Add support for multiple LE connection attempts. 3. Handle concurrent LE connections and device discovery 4. Add better support for controller which a capable of scanning and initiating LE connection at the same time. 5. Add API so userspace is able to configure connection parameters. 6. Remove LE connection management code from bluetoothd. Feedback is welcome. Best regards, Andre Andre Guedes (7): Bluetooth: Add new connection states Bluetooth: Make hci_le_create_connection non-static Bluetooth: Setup LE scan with no timeout Bluetooth: Add LE scan type macros Bluetooth: Change LE connection routine Bluetooth: Handle hci_conn timeout in BT_SCAN state Bluetooth: Track the number of hci_conn in BT_SCAN include/net/bluetooth/bluetooth.h | 8 +++++++- include/net/bluetooth/hci_core.h | 9 +++++++++ net/bluetooth/hci_conn.c | 16 ++++++++++++++-- net/bluetooth/hci_core.c | 19 +++++++++++-------- net/bluetooth/hci_event.c | 40 +++++++++++++++++++++++++++++++++++++-- net/bluetooth/mgmt.c | 5 ++--- 6 files changed, 81 insertions(+), 16 deletions(-) -- 1.8.1.1 -- To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
