• Frédéric Dalleau's avatar
    Bluetooth: Handle specific error for SCO connection fallback · 1a4c958c
    Frédéric Dalleau authored
    Synchronous Connection Complete event can return error "Connection
    Rejected due to Limited resources (0x10)".
    Handling this error is required for SCO connection fallback. This error
    happens when the server tried to accept the connection but failed to
    negotiate settings.
    This error code has been verified experimentally by sending a T2 request
    to a T1 only SCO listener.
    
    Client dump follows :
    
    < HCI Command (0x01|0x0028) plen 17 [hci0] 3.696064
            Handle: 12
            Transmit bandwidth: 8000
            Receive bandwidth: 8000
            Max latency: 13
            Setting: 0x0003
            Retransmission effort: Optimize for link quality (0x02)
            Packet type: 0x0380
    > HCI Event (0x0f) plen 4 [hci0] 3.697034
          Setup Synchronous Connection (0x01|0x0028) ncmd 1
            Status: Success (0x00)
    > HCI Event (0x2c) plen 17 [hci0] 3.736059
            Status: Connection Rejected due to Limited Resources (0x0d)
            Handle: 0
            Address: xx:xx:xx:xx:xx:AB (OUI 70-F3-95)
            Link type: eSCO (0x02)
            Transmission interval: 0x0c
            Retransmission window: 0x06
            RX packet length: 60
            TX packet length: 60
            Air mode: Transparent (0x03)
    
    Server dump follows :
    
    > HCI Event (0x04) plen 10 [hci0] 4.741513
            Address: xx:xx:xx:xx:xx:D9 (OUI 20-68-9D)
            Class: 0x620100
              Major class: Computer (desktop, notebook, PDA, organizers)
              Minor class: Uncategorized, code for device not assigned
              Networking (LAN, Ad hoc)
              Audio (Speaker, Microphone, Headset)
              Telephony (Cordless telephony, Modem, Headset)
            Link type: eSCO (0x02)
    < HCI Command (0x01|0x0029) plen 21 [hci0] 4.743269
            Address: xx:xx:xx:xx:xx:D9 (OUI 20-68-9D)
            Transmit bandwidth: 8000
            Receive bandwidth: 8000
            Max latency: 13
            Setting: 0x0003
            Retransmission effort: Optimize for link quality (0x02)
            Packet type: 0x03c1
    > HCI Event (0x0f) plen 4 [hci0] 4.745517
          Accept Synchronous Connection (0x01|0x0029) ncmd 1
            Status: Success (0x00)
    > HCI Event (0x2c) plen 17 [hci0] 4.749508
            Status: Connection Rejected due to Limited Resources (0x0d)
            Handle: 0
            Address: xx:xx:xx:xx:xx:D9 (OUI 20-68-9D)
            Link type: eSCO (0x02)
            Transmission interval: 0x0c
            Retransmission window: 0x06
            RX packet length: 60
            TX packet length: 60
            Air mode: Transparent (0x03)
    Signed-off-by: default avatarFrédéric Dalleau <frederic.dalleau@linux.intel.com>
    Acked-by: default avatarMarcel Holtmann <marcel@holtmann.org>
    Signed-off-by: default avatarGustavo Padovan <gustavo.padovan@collabora.co.uk>
    1a4c958c
hci_event.c 88.2 KB