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From: Marcel Holtmann <marcel@holtmann.org>
To: "Frédéric Dalleau" <frederic.dalleau@linux.intel.com>
Cc: linux-bluetooth@vger.kernel.org
Subject: Re: [PATCH v10 09/10] Bluetooth: Handle specific error for SCO connection fallback
Date: Fri, 16 Aug 2013 11:48:47 -0700	[thread overview]
Message-ID: <A153E75B-61C9-4358-B37A-7B8770D39C17@holtmann.org> (raw)
In-Reply-To: <1376499814-11386-10-git-send-email-frederic.dalleau@linux.intel.com>

Hi Fred,

> 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: Frédéric Dalleau <frederic.dalleau@linux.intel.com>
> ---
> net/bluetooth/hci_event.c |    1 +
> 1 file changed, 1 insertion(+)

Acked-by: Marcel Holtmann <marcel@holtmann.org>

Regards

Marcel


  reply	other threads:[~2013-08-16 18:48 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-08-14 17:03 [PATCH v10 00/10] sco: SCO socket option for voice_setting Frédéric Dalleau
2013-08-14 17:03 ` [PATCH v10 01/10] Bluetooth: Use hci_connect_sco directly Frédéric Dalleau
2013-08-14 17:03 ` [PATCH v10 02/10] Bluetooth: Remove unused mask parameter in sco_conn_defer_accept Frédéric Dalleau
2013-08-14 17:03 ` [PATCH v10 03/10] Bluetooth: Add Bluetooth socket voice option Frédéric Dalleau
2013-08-14 17:03 ` [PATCH v10 04/10] Bluetooth: Add constants for SCO airmode Frédéric Dalleau
2013-08-14 17:03 ` [PATCH v10 05/10] Bluetooth: Use voice setting in deferred SCO connection request Frédéric Dalleau
2013-08-16 18:47   ` Marcel Holtmann
2013-08-14 17:03 ` [PATCH v10 06/10] Bluetooth: Parameters for outgoing SCO connections Frédéric Dalleau
2013-08-16 18:47   ` Marcel Holtmann
2013-08-14 17:03 ` [PATCH v10 07/10] Bluetooth: Add constants and macro declaration for transparent data Frédéric Dalleau
2013-08-14 17:03 ` [PATCH v10 08/10] Bluetooth: Prevent transparent SCO on older devices Frédéric Dalleau
2013-08-16 18:45   ` Marcel Holtmann
2013-08-14 17:03 ` [PATCH v10 09/10] Bluetooth: Handle specific error for SCO connection fallback Frédéric Dalleau
2013-08-16 18:48   ` Marcel Holtmann [this message]
2013-08-14 17:03 ` [PATCH v10 10/10] Bluetooth: Add " Frédéric Dalleau
2013-08-16 18:55   ` Marcel Holtmann

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