Hi all, This v2 RFC series address Marcel's comment regarding a separated state machine for handling LE connection attempts. So in this series it was introduced a new state machine for carrying out the general connection establishment procedure. >From the previous cover letter: 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. Regards, Andre Andre Guedes (8): Bluetooth: Setup LE scan with no timeout Bluetooth: Add LE scan type macros Bluetooth: LE connection state machine Bluetooth: Add hci_conn helpers Bluetooth: Change LE connection routine Bluetooth: Handle hci_conn timeout in BT_CONNECT Bluetooth: Count pending LE connection attempts Bluetooth: Initialize some hci_conn fields earlier include/net/bluetooth/hci_core.h | 25 +++++++++ net/bluetooth/hci_conn.c | 111 ++++++++++++++++++++++++++++++++++++--- net/bluetooth/hci_core.c | 19 ++++--- net/bluetooth/hci_event.c | 30 ++++++++++- net/bluetooth/mgmt.c | 7 ++- 5 files changed, 171 insertions(+), 21 deletions(-) -- 1.8.1.2 -- 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
