Return-Path: MIME-Version: 1.0 Date: Fri, 8 May 2009 14:27:37 +0530 Message-ID: Subject: SCO Disconnect ,Connect From: sreevani medhahal To: linux-bluetooth@vger.kernel.org Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-bluetooth-owner@vger.kernel.org List-ID: Hi, i have the following query. a) (headset.c) headset_unlock ->headset_set_state(...HEADSET_CONNECTED),which in turn calls the close_sco. close_sco calls g_io_channel_shutdown(). I want to know whether g_io_channel_shutdown() triggers the sending of HCI_Disconnect_Req(to remove SCO) to the LMP . b) Also wanted to know,will the user mode BlueZ get an indication ,(if so through which function),when the LMP sends a Disconnect Complete Event to the Host. I am asking the above as i see in the HCI dump, Disconnect & Disconnect Complete messages, the issue i am facing is user mode BlueZ calls close_sco & then calls headset_request_stream which again asks for sco_connect(). Before the Disconnect Complete Evt is posted by LMP. LMP reports Synchrnous Connection LImit to Device Exceeded(0X0A) for the Synchrounous Setup Complete . Snippet of hcidump is given below: 2009-05-08 13:43:47.540906 < HCI Command: Setup Synchronous Connection (0x01|0x0028) plen 17 handle 42 voice setting 0x0060 2009-05-08 13:43:47.545632 > SCO data: handle 50 flags 0x00 dlen 48 0000: c1 fe ed fc f7 fb 4d fa ed f8 28 f9 cf fa d1 fd ......M...(..... 0020: 05 03 71 00 c4 fd fe fc 77 fe 54 00 ef 01 8d 03 ..q.....w.T..... 2009-05-08 13:43:47.554646 > HCI Event: Command Status (0x0f) plen 4 Setup Synchronous Connection (0x01|0x0028) status 0x00 ncmd 1 2009-05-08 13:43:47.554705 < HCI Command: Disconnect (0x01|0x0006) plen 3 handle 50 reason 0x13 Reason: Remote User Terminated Connection 2009-05-08 13:43:47.565632 > SCO data: handle 50 flags 0x00 dlen 48 0000: 3a 06 4b 07 a3 05 bc 01 e7 fe 48 ff 5f ff e7 fc :.K.......H._... 0020: 2b 00 aa 04 0e 09 b6 08 ce 03 92 fb 53 f5 fb f6 +...........S... 2009-05-08 13:43:47.566646 > HCI Event: Command Status (0x0f) plen 4 Disconnect (0x01|0x0006) status 0x00 ncmd 0 0020: 62 fd e0 ff d3 00 e1 00 f3 01 eb 05 46 0a 42 0c b...........F.B. 2009-05-08 13:43:47.597617 > HCI Event: Synchronous Connect Complete (0x2c) plen 17 status 0x0a handle 42 bdaddr 00:13:17:71:FD:88 type SCO Error: Synchronous Connection to a Device Exceeded 2009-05-08 13:43:47.605629 > SCO data: handle 50 flags 0x00 dlen 48 0000: a7 0b 36 09 f4 05 0e 04 89 04 4e 04 ec 03 52 03 ..6.......N...R. 0010: d6 00 85 fe 01 fd 08 fc ad fb 6d fa 21 f8 3f f5 ..........m.!.?. 2009-05-08 13:43:47.607631 > HCI Event: Command Status (0x0f) plen 4 Unknown (0x00|0x0000) status 0x00 ncmd 1 2009-05-08 13:43:47.615616 > SCO data: handle 50 flags 0x00 dlen 48 0000: 1f f7 44 f9 32 fb ed fc bd fd d2 fe 32 01 19 04 ..D.2.......2... 0020: 20 07 19 04 4b 02 bf 01 d7 00 d8 fd 77 fa 2a f9 ...K.......w.*. 2009-05-08 13:43:47.635626 > SCO data: handle 50 flags 0x00 dlen 48 0000: e5 f8 e5 f8 e5 f8 e5 f8 e5 f8 e5 f8 e5 f8 e5 f8 ................ 0020: e5 f8 e5 f8 e5 f8 e5 f8 e5 f8 e5 f8 e5 f8 e5 f8 ................ 2009-05-08 13:43:47.638651 > HCI Event: Disconn Complete (0x05) plen 4 Regards, Sreevani M