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    Bluetooth: Add SCO fallback for eSCO connection attempts · efc7688b
    Marcel Holtmann 提交于
    When attempting to setup eSCO connections it can happen that some link
    manager implementations fail to properly negotiate the eSCO parameters
    and thus fail the eSCO setup. Normally the link manager is responsible
    for the negotiation of the parameters and actually fallback to SCO if
    no agreement can be reached. In cases where the link manager is just too
    stupid, then at least try to establish a SCO link if eSCO fails.
    
    For the Bluetooth devices with EDR support this includes handling packet
    types of EDR basebands. This is particular tricky since for the EDR the
    logic of enabling/disabling one specific packet type is turned around.
    This fix contains an extra bitmask to disable eSCO EDR packet when
    trying to fallback to a SCO connection.
    Signed-off-by: NMarcel Holtmann <marcel@holtmann.org>
    efc7688b
hci.h 23.0 KB