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From: Matt <mwtaylor@gmail.com>
To: Luiz Augusto von Dentz <luiz.dentz@gmail.com>
Cc: "linux-bluetooth@vger.kernel.org" <linux-bluetooth@vger.kernel.org>
Subject: Re: Error setting UUIDs discovery filter on big endian systems
Date: Wed, 5 Dec 2018 00:27:07 +0000	[thread overview]
Message-ID: <f2edc2ca-9ed3-c436-b43c-81b0560d7f56@gmail.com> (raw)
In-Reply-To: <CABBYNZJbT3fv8tq7JvBjiDuE2W+p__uceBSkduYtrChq0i8WFA@mail.gmail.com>

Hi Luiz,

On 04/12/2018 19:53, Luiz Augusto von Dentz wrote:
> Hi Matt,
> On Mon, Dec 3, 2018 at 3:59 PM Matt <mwtaylor@gmail.com> wrote:
>> Hi,
>>
>> When setting a UUIDs discovery filter I am receiving
>> "org.bluez.Error.InProgress" on starting a scan (which isn't in progress
>> and will not start unless the discovery filter is cleared).
>>
>> I am using bluez 5.50 (on openWRT). The problem seems to only appear on
>> big endian hardware (tested a couple of recent kernel and bluez
>> versions), the same software compiled for and tested on little endian
>> hardware works as expected. The issue can be reproduced in the following
>> way using bluetoothctl:
>>
>> # /etc/init.d/bluetoothd restart
>> # bluetoothctl
>> [bluetooth]# power on
>> Changing power on succeeded
>> [CHG] Controller 00:1A:7D:DA:71:13 Powered: yes
>> [bluetooth]# menu scan
>> [bluetooth]# uuids 0000180f-0000-1000-8000-00805f9b34fb
>> [bluetooth]# back
>> [bluetooth]# scan on
>> SetDiscoveryFilter success
>> Failed to start discovery: org.bluez.Error.InProgress
>>
>> Setting an rssi filter does work as expected on my big endian hardware,
>> it is only the uuids filter that appears to show this problem. The issue
>> appears whether set using bluetoothctl or directly using DBus.
> Do you have the bluetoothd logs when that happens? I wonder if it is
> something with our string to UUID conversion.
>
>
When performing the above sequence in bluetoothctl with 'bluetoothd -d' 
I get the following in my log:

daemon.debug bluetoothd[22991]: src/agent.c:agent_ref() 0xb03e60: ref=1
daemon.debug bluetoothd[22991]: src/agent.c:register_agent() agent :1.29
daemon.debug bluetoothd[22991]: src/adapter.c:property_set_mode() 
sending Set Powered command for index 0
daemon.debug bluetoothd[22991]: 
src/adapter.c:property_set_mode_complete() Success (0x00)
daemon.debug bluetoothd[22991]: src/adapter.c:new_settings_callback() 
Settings: 0x00000ad1
daemon.debug bluetoothd[22991]: src/adapter.c:settings_changed() Changed 
settings: 0x00000001
daemon.debug bluetoothd[22991]: src/adapter.c:adapter_start() adapter 
/org/bluez/hci0 has been enabled
daemon.debug bluetoothd[22991]: src/adapter.c:trigger_passive_scanning()
daemon.debug bluetoothd[22991]: src/adapter.c:set_discovery_filter() 
sender :1.29
daemon.debug bluetoothd[22991]: 
src/adapter.c:parse_discovery_filter_dict() filtered discovery params: 
transport: 7 rssi: 32767 pathloss: 32767  duplicate data: false
daemon.debug bluetoothd[22991]: src/adapter.c:set_discovery_filter() 
successfully pre-set filter
daemon.debug bluetoothd[22991]: src/adapter.c:start_discovery() sender :1.29
daemon.debug bluetoothd[22991]: src/adapter.c:update_discovery_filter()
daemon.debug bluetoothd[22991]: src/adapter.c:discovery_filter_to_mgmt_cp()
daemon.debug bluetoothd[22991]: src/adapter.c:trigger_start_discovery()
daemon.debug bluetoothd[22991]: src/adapter.c:cancel_passive_scanning()
daemon.debug bluetoothd[22991]: src/adapter.c:start_discovery_timeout()
daemon.debug bluetoothd[22991]: src/adapter.c:start_discovery_timeout() 
adapter->current_discovery_filter == 1
daemon.debug bluetoothd[22991]: src/adapter.c:start_discovery_timeout() 
sending MGMT_OP_START_SERVICE_DISCOVERY 127, 7, 1
daemon.debug bluetoothd[22991]: src/adapter.c:start_discovery_complete() 
status 0x0d
kern.err kernel: [709588.482104] Bluetooth: service_discovery: expected 
4100 bytes, got 20 bytes
daemon.debug bluetoothd[22991]: src/agent.c:agent_disconnect() Agent 
:1.29 disconnected
daemon.debug bluetoothd[22991]: src/agent.c:agent_destroy() agent :1.29
daemon.debug bluetoothd[22991]: src/agent.c:agent_unref() 0xb03e60: ref=0

  reply	other threads:[~2018-12-05  0:27 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-12-03 13:56 Error setting UUIDs discovery filter on big endian systems Matt
2018-12-04 19:53 ` Luiz Augusto von Dentz
2018-12-05  0:27   ` Matt [this message]
2019-03-05 18:02     ` Matt
2019-03-06 11:10       ` Luiz Augusto von Dentz
2019-03-06 13:48         ` Matt
2019-03-06 14:14           ` Luiz Augusto von Dentz
2019-03-06 15:14             ` Matt

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