* Configure supervision timeout
@ 2016-06-28 8:38 Seulki Shin
2016-06-28 14:36 ` Marcel Holtmann
0 siblings, 1 reply; 4+ messages in thread
From: Seulki Shin @ 2016-06-28 8:38 UTC (permalink / raw)
To: linux-bluetooth
Hi Bluez,
Recently, I have noticed supervision timeout is not enough to pair devices.
How can I configure supervision timeout? Is there any configuration file?
First, I have checked "main.conf" but I couldn't find any related properties.
I also found /sys/kernel/debug/bluetooth/hci0 has a bunch of system settings.
But I am not sure editing those files is a right approach.
Any help would be appreciated.
Thanks,
Seulki.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Configure supervision timeout
2016-06-28 8:38 Configure supervision timeout Seulki Shin
@ 2016-06-28 14:36 ` Marcel Holtmann
2016-06-29 5:21 ` Seulki Shin
0 siblings, 1 reply; 4+ messages in thread
From: Marcel Holtmann @ 2016-06-28 14:36 UTC (permalink / raw)
To: Seulki Shin; +Cc: linux-bluetooth
Hi Seulki,
> Recently, I have noticed supervision timeout is not enough to pair devices.
>
> How can I configure supervision timeout? Is there any configuration file?
>
> First, I have checked "main.conf" but I couldn't find any related properties.
> I also found /sys/kernel/debug/bluetooth/hci0 has a bunch of system settings.
> But I am not sure editing those files is a right approach.
the supervision timeout will trigger if the baseband will not even ack packets. A longer timeout is most likely not going to help you either to pair. Why do you think it would?
Can you provide btmon traces to see why a disconnect is happening?
Regards
Marcel
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Configure supervision timeout
2016-06-28 14:36 ` Marcel Holtmann
@ 2016-06-29 5:21 ` Seulki Shin
2016-07-04 17:33 ` Marcel Holtmann
0 siblings, 1 reply; 4+ messages in thread
From: Seulki Shin @ 2016-06-29 5:21 UTC (permalink / raw)
To: Marcel Holtmann; +Cc: linux-bluetooth
[-- Attachment #1: Type: text/plain, Size: 3003 bytes --]
Hi Marcel,
Thanks a lot for sharing valuable information.
On Tue, Jun 28, 2016 at 11:36 PM, Marcel Holtmann <marcel@holtmann.org> wrote:
> Hi Seulki,
>
>> Recently, I have noticed supervision timeout is not enough to pair devices.
>>
>> How can I configure supervision timeout? Is there any configuration file?
>>
>> First, I have checked "main.conf" but I couldn't find any related properties.
>> I also found /sys/kernel/debug/bluetooth/hci0 has a bunch of system settings.
>> But I am not sure editing those files is a right approach.
>
> the supervision timeout will trigger if the baseband will not even ack packets. A longer timeout is most likely not going to help you either to pair. Why do you think it would?
>
> Can you provide btmon traces to see why a disconnect is happening?
>
> Regards
>
> Marcel
>
1. I thought Supervision timeout was setting up too short like below. (420msec)
< HCI Command: LE Create Connection (0x08|0x000d) plen 25 [hci0] 1360.262067
Scan interval: 60.000 msec (0x0060)
Scan window: 30.000 msec (0x0030)
Filter policy: White list is not used (0x00)
Peer address type: Public (0x00)
Peer address: 00:22:D0:8D:22:6D (Polar Electro Oy)
Own address type: Public (0x00)
Min connection interval: 50.00 msec (0x0028)
Max connection interval: 70.00 msec (0x0038)
Connection latency: 0x0000
Supervision timeout: 420 msec (0x002a)
Min connection length: 0.000 msec (0x0000)
Max connection length: 0.000 msec (0x0000)
2. I found Attribute Not Found error message which had not been noticed before.
< ACL Data TX: Handle 128 flags 0x00 dlen 11 [hci0] 1363.521878
ATT: Read By Type Request (0x08) len 6
Handle range: 0x000e-0x000f
Attribute type: Characteristic (0x2803)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 1363.591184
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 9 [hci0] 1363.660998
ATT: Error Response (0x01) len 4
Read By Type Request (0x08)
Handle: 0x000e
Error: Attribute Not Found (0x0a)
< ACL Data TX: Handle 128 flags 0x00 dlen 9 [hci0] 1363.661926
ATT: Find Information Request (0x04) len 4
Handle range: 0x000f-0x000f
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 1363.730944
Num handles: 1
Handle: 128
Count: 1
3. Because of Connection Timeout message, I suspected supervision timeout.
> HCI Event: Disconnect Complete (0x05) plen 4 [hci0] 1364.131002
Status: Success (0x00)
Handle: 128
Reason: Connection Timeout (0x08)
@ Device Disconnected: 00:22:D0:8D:22:6D (1) reason 1
4. I attached full hci dump.
5. Version information:
Fedora release 22 (Twenty Two)
Kernel 4.1.15-00035-gd1a75bb on an armv7l (ttyAMA3)
[root@localhost ~]# bluetoothctl -v
5.39
Thanks,
Seulki
[-- Attachment #2: connection-fail.txt --]
[-- Type: text/plain, Size: 12335 bytes --]
< HCI Command: LE Create Connection (0x08|0x000d) plen 25 [hci0] 1360.262067
Scan interval: 60.000 msec (0x0060)
Scan window: 30.000 msec (0x0030)
Filter policy: White list is not used (0x00)
Peer address type: Public (0x00)
Peer address: 00:22:D0:8D:22:6D (Polar Electro Oy)
Own address type: Public (0x00)
Min connection interval: 50.00 msec (0x0028)
Max connection interval: 70.00 msec (0x0038)
Connection latency: 0x0000
Supervision timeout: 420 msec (0x002a)
Min connection length: 0.000 msec (0x0000)
Max connection length: 0.000 msec (0x0000)
> HCI Event: Command Status (0x0f) plen 4 [hci0] 1360.281019
LE Create Connection (0x08|0x000d) ncmd 1
Status: Success (0x00)
> HCI Event: LE Meta Event (0x3e) plen 19 [hci0] 1360.291040
LE Connection Complete (0x01)
Status: Success (0x00)
Handle: 128
Role: Master (0x00)
Peer address type: Public (0x00)
Peer address: 00:22:D0:8D:22:6D (Polar Electro Oy)
Connection interval: 67.50 msec (0x0036)
Connection latency: 0.00 msec (0x0000)
Supervision timeout: 420 msec (0x002a)
Master clock accuracy: 0x01
< HCI Command: LE Read Remote Used F.. (0x08|0x0016) plen 2 [hci0] 1360.291734
Handle: 128
@ Device Connected: 00:22:D0:8D:22:6D (1) flags 0x0000
> HCI Event: Command Status (0x0f) plen 4 [hci0] 1360.311306
LE Read Remote Used Features (0x08|0x0016) ncmd 1
Status: Success (0x00)
> HCI Event: LE Meta Event (0x3e) plen 12 [hci0] 1360.551105
LE Read Remote Used Features (0x04)
Status: Success (0x00)
Handle: 128
Features: 0x01 0x00 0x00 0x00 0x00 0x00 0x00 0x00
LE Encryption
< ACL Data TX: Handle 128 flags 0x00 dlen 7 [hci0] 1360.580324
ATT: Exchange MTU Request (0x02) len 2
Client RX MTU: 517
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 1360.960945
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 7 [hci0] 1360.971065
ATT: Exchange MTU Response (0x03) len 2
Server RX MTU: 23
< ACL Data TX: Handle 128 flags 0x00 dlen 11 [hci0] 1360.971966
ATT: Read By Group Type Request (0x10) len 6
Handle range: 0x0001-0xffff
Attribute group type: Primary Service (0x2800)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 1361.031002
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 24 [hci0] 1361.091078
ATT: Read By Group Type Response (0x11) len 19
Attribute data length: 6
Attribute group list: 3 entries
Handle range: 0x0001-0x000b
UUID: Generic Access Profile (0x1800)
Handle range: 0x000c-0x000f
UUID: Generic Attribute Profile (0x1801)
Handle range: 0x0010-0x0015
UUID: Heart Rate (0x180d)
< ACL Data TX: Handle 128 flags 0x00 dlen 11 [hci0] 1361.091971
ATT: Read By Group Type Request (0x10) len 6
Handle range: 0x0016-0xffff
Attribute group type: Primary Service (0x2800)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 1361.160941
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 18 [hci0] 1361.230942
ATT: Read By Group Type Response (0x11) len 13
Attribute data length: 6
Attribute group list: 2 entries
Handle range: 0x0016-0x0024
UUID: Device Information (0x180a)
Handle range: 0x0025-0x0027
UUID: Battery Service (0x180f)
< ACL Data TX: Handle 128 flags 0x00 dlen 11 [hci0] 1361.231805
ATT: Read By Group Type Request (0x10) len 6
Handle range: 0x0028-0xffff
Attribute group type: Primary Service (0x2800)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 1361.430855
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 26 [hci0] 1361.501505
ATT: Read By Group Type Response (0x11) len 21
Attribute data length: 20
Attribute group list: 1 entry
Handle range: 0x0028-0xffff
UUID: Unknown (6217ff4b-fb31-1140-ad5a-a45545d7ecf3)
< ACL Data TX: Handle 128 flags 0x00 dlen 11 [hci0] 1361.503739
ATT: Read By Group Type Request (0x10) len 6
Handle range: 0x0001-0xffff
Attribute group type: Secondary Service (0x2801)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 1361.571086
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 9 [hci0] 1361.630877
ATT: Error Response (0x01) len 4
Read By Group Type Request (0x10)
Handle: 0x0001
Error: Unsupported Group Type (0x10)
< ACL Data TX: Handle 128 flags 0x00 dlen 11 [hci0] 1361.631599
ATT: Read By Type Request (0x08) len 6
Handle range: 0x0001-0x000b
Attribute type: Include (0x2802)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 1361.701485
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 9 [hci0] 1361.771009
ATT: Error Response (0x01) len 4
Read By Type Request (0x08)
Handle: 0x0001
Error: Attribute Not Found (0x0a)
< ACL Data TX: Handle 128 flags 0x00 dlen 11 [hci0] 1361.771853
ATT: Read By Type Request (0x08) len 6
Handle range: 0x000c-0x000f
Attribute type: Include (0x2802)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 1361.970949
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 9 [hci0] 1361.981062
ATT: Error Response (0x01) len 4
Read By Type Request (0x08)
Handle: 0x000c
Error: Attribute Not Found (0x0a)
< ACL Data TX: Handle 128 flags 0x00 dlen 11 [hci0] 1361.981904
ATT: Read By Type Request (0x08) len 6
Handle range: 0x0010-0x0015
Attribute type: Include (0x2802)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 1362.040940
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 9 [hci0] 1362.110958
ATT: Error Response (0x01) len 4
Read By Type Request (0x08)
Handle: 0x0010
Error: Attribute Not Found (0x0a)
< ACL Data TX: Handle 128 flags 0x00 dlen 11 [hci0] 1362.111818
ATT: Read By Type Request (0x08) len 6
Handle range: 0x0016-0x0024
Attribute type: Include (0x2802)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 1362.171004
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 9 [hci0] 1362.240975
ATT: Error Response (0x01) len 4
Read By Type Request (0x08)
Handle: 0x0016
Error: Attribute Not Found (0x0a)
< ACL Data TX: Handle 128 flags 0x00 dlen 11 [hci0] 1362.241821
ATT: Read By Type Request (0x08) len 6
Handle range: 0x0025-0x0027
Attribute type: Include (0x2802)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 1362.440869
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 9 [hci0] 1362.511003
ATT: Error Response (0x01) len 4
Read By Type Request (0x08)
Handle: 0x0025
Error: Attribute Not Found (0x0a)
< ACL Data TX: Handle 128 flags 0x00 dlen 11 [hci0] 1362.511848
ATT: Read By Type Request (0x08) len 6
Handle range: 0x0028-0xffff
Attribute type: Include (0x2802)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 1362.580974
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 9 [hci0] 1362.650997
ATT: Error Response (0x01) len 4
Read By Type Request (0x08)
Handle: 0x0028
Error: Attribute Not Found (0x0a)
< ACL Data TX: Handle 128 flags 0x00 dlen 11 [hci0] 1362.651848
ATT: Read By Type Request (0x08) len 6
Handle range: 0x0001-0x000b
Attribute type: Characteristic (0x2803)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 1362.710952
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 27 [hci0] 1362.921008
ATT: Read By Type Response (0x09) len 22
Attribute data length: 7
Attribute data list: 3 entries
Handle: 0x0002
Value: 0e0300002a
Handle: 0x0004
Value: 020500012a
Handle: 0x0006
Value: 0a0700022a
< ACL Data TX: Handle 128 flags 0x00 dlen 11 [hci0] 1362.921901
ATT: Read By Type Request (0x08) len 6
Handle range: 0x0007-0x000b
Attribute type: Characteristic (0x2803)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 1362.980995
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 20 [hci0] 1363.050994
ATT: Read By Type Response (0x09) len 15
Attribute data length: 7
Attribute data list: 2 entries
Handle: 0x0008
Value: 080900032a
Handle: 0x000a
Value: 020b00042a
< ACL Data TX: Handle 128 flags 0x00 dlen 11 [hci0] 1363.051867
ATT: Read By Type Request (0x08) len 6
Handle range: 0x000b-0x000b
Attribute type: Characteristic (0x2803)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 1363.120946
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 9 [hci0] 1363.250965
ATT: Error Response (0x01) len 4
Read By Type Request (0x08)
Handle: 0x000b
Error: Attribute Not Found (0x0a)
< ACL Data TX: Handle 128 flags 0x00 dlen 11 [hci0] 1363.251843
ATT: Read By Type Request (0x08) len 6
Handle range: 0x000c-0x000f
Attribute type: Characteristic (0x2803)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 1363.460868
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 13 [hci0] 1363.521125
ATT: Read By Type Response (0x09) len 8
Attribute data length: 7
Attribute data list: 1 entry
Handle: 0x000d
Value: 200e00052a
< ACL Data TX: Handle 128 flags 0x00 dlen 11 [hci0] 1363.521878
ATT: Read By Type Request (0x08) len 6
Handle range: 0x000e-0x000f
Attribute type: Characteristic (0x2803)
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 1363.591184
Num handles: 1
Handle: 128
Count: 1
> ACL Data RX: Handle 128 flags 0x02 dlen 9 [hci0] 1363.660998
ATT: Error Response (0x01) len 4
Read By Type Request (0x08)
Handle: 0x000e
Error: Attribute Not Found (0x0a)
< ACL Data TX: Handle 128 flags 0x00 dlen 9 [hci0] 1363.661926
ATT: Find Information Request (0x04) len 4
Handle range: 0x000f-0x000f
> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 1363.730944
Num handles: 1
Handle: 128
Count: 1
> HCI Event: Disconnect Complete (0x05) plen 4 [hci0] 1364.131002
Status: Success (0x00)
Handle: 128
Reason: Connection Timeout (0x08)
@ Device Disconnected: 00:22:D0:8D:22:6D (1) reason 1
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Configure supervision timeout
2016-06-29 5:21 ` Seulki Shin
@ 2016-07-04 17:33 ` Marcel Holtmann
0 siblings, 0 replies; 4+ messages in thread
From: Marcel Holtmann @ 2016-07-04 17:33 UTC (permalink / raw)
To: Seulki Shin; +Cc: linux-bluetooth
Hi Seulki,
> Thanks a lot for sharing valuable information.
>
> On Tue, Jun 28, 2016 at 11:36 PM, Marcel Holtmann <marcel@holtmann.org> wrote:
>> Hi Seulki,
>>
>>> Recently, I have noticed supervision timeout is not enough to pair devices.
>>>
>>> How can I configure supervision timeout? Is there any configuration file?
>>>
>>> First, I have checked "main.conf" but I couldn't find any related properties.
>>> I also found /sys/kernel/debug/bluetooth/hci0 has a bunch of system settings.
>>> But I am not sure editing those files is a right approach.
>>
>> the supervision timeout will trigger if the baseband will not even ack packets. A longer timeout is most likely not going to help you either to pair. Why do you think it would?
>>
>> Can you provide btmon traces to see why a disconnect is happening?
>>
>> Regards
>>
>> Marcel
>>
>
> 1. I thought Supervision timeout was setting up too short like below. (420msec)
>
> < HCI Command: LE Create Connection (0x08|0x000d) plen 25 [hci0] 1360.262067
> Scan interval: 60.000 msec (0x0060)
> Scan window: 30.000 msec (0x0030)
> Filter policy: White list is not used (0x00)
> Peer address type: Public (0x00)
> Peer address: 00:22:D0:8D:22:6D (Polar Electro Oy)
> Own address type: Public (0x00)
> Min connection interval: 50.00 msec (0x0028)
> Max connection interval: 70.00 msec (0x0038)
> Connection latency: 0x0000
> Supervision timeout: 420 msec (0x002a)
> Min connection length: 0.000 msec (0x0000)
> Max connection length: 0.000 msec (0x0000)
>
> 2. I found Attribute Not Found error message which had not been noticed before.
>
> < ACL Data TX: Handle 128 flags 0x00 dlen 11 [hci0] 1363.521878
> ATT: Read By Type Request (0x08) len 6
> Handle range: 0x000e-0x000f
> Attribute type: Characteristic (0x2803)
>> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 1363.591184
> Num handles: 1
> Handle: 128
> Count: 1
>> ACL Data RX: Handle 128 flags 0x02 dlen 9 [hci0] 1363.660998
> ATT: Error Response (0x01) len 4
> Read By Type Request (0x08)
> Handle: 0x000e
> Error: Attribute Not Found (0x0a)
> < ACL Data TX: Handle 128 flags 0x00 dlen 9 [hci0] 1363.661926
> ATT: Find Information Request (0x04) len 4
> Handle range: 0x000f-0x000f
>> HCI Event: Number of Completed Packets (0x13) plen 5 [hci0] 1363.730944
> Num handles: 1
> Handle: 128
> Count: 1
>
> 3. Because of Connection Timeout message, I suspected supervision timeout.
>
>> HCI Event: Disconnect Complete (0x05) plen 4 [hci0] 1364.131002
> Status: Success (0x00)
> Handle: 128
> Reason: Connection Timeout (0x08)
> @ Device Disconnected: 00:22:D0:8D:22:6D (1) reason 1
this reason is odd. However I highly doubt that it is because of the link supervision timeout. If so, then something else is going really wrong. Check the messages from SMP on what is going on. Meaning, does it actually try to pair or is the remote stack crashing somehow.
Regards
Marcel
^ permalink raw reply [flat|nested] 4+ messages in thread
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2016-06-28 8:38 Configure supervision timeout Seulki Shin
2016-06-28 14:36 ` Marcel Holtmann
2016-06-29 5:21 ` Seulki Shin
2016-07-04 17:33 ` Marcel Holtmann
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