Return-Path: Message-ID: <44ED2E66.70409@bartol.udel.edu> Date: Thu, 24 Aug 2006 00:43:18 -0400 From: Rich Townsend MIME-Version: 1.0 To: Bluez Developers Subject: [Bluez-devel] Frames too long in sco_send_frame Reply-To: BlueZ development List-Id: BlueZ development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Sender: bluez-devel-bounces@lists.sourceforge.net Errors-To: bluez-devel-bounces@lists.sourceforge.net (Apologies for the repost, this accidentally ended up as a sidethread) Hi all -- I'm experiencing a problem with my Belkin Compact Flash Bluetooth adapter (F8T020 v.2). When trying to get a headset working with the adapter (via snd-bt-sco), I've discovered that no SCO packets are being transmitted: hciconfig -a hci0: hci0: Type: UART BD Address: 00:02:72:81:23:27 ACL MTU: 192:8 SCO MTU: 64:8 UP RUNNING PSCAN ISCAN AUTH ENCRYPT RX bytes:63524 acl:27 sco:361 events:59 errors:0 TX bytes:2004 acl:22 sco:0 commands:29 errors:0 Features: 0xff 0xff 0x0f 0x00 0x00 0x00 0x00 0x00 Packet type: DM1 DM3 DM5 DH1 DH3 DH5 HV1 HV2 HV3 Link policy: RSWITCH HOLD SNIFF PARK Link mode: SLAVE ACCEPT Name: 'BlueZ (0)' Class: 0x120104 Service Classes: Networking Device Class: Computer, Desktop workstation HCI Ver: 1.1 (0x1) HCI Rev: 0x110 LMP Ver: 1.1 (0x1) LMP Subver: 0x110 Manufacturer: Cambridge Silicon Radio (10) hciconfig hci0 revision: hci0: Type: UART BD Address: 00:02:72:81:23:27 ACL MTU: 192:8 SCO MTU: 64:8 HCI 14.3 Chip version: BlueCore02-External (ES2) Max key size: 56 bit SCO mapping: HCI The adapter is CSR based (not Broadcom), and the problem therefore doesn't seem to be MTU based. However, inserting debugging code in net/bluetooth/sco.c, I discover that the problem lies within sco_send_frame (or its caller). When the code fragment /* Check outgoing MTU */ if (len > conn->mtu) return -EINVAL; is reached, conn->mtu has the expected value of 64, but len is consistently larger. Hence, sco_send_frame exits with -EINVAL, and the frame never leaves the adapter. I'd appreciate assistance in working out the source of the problem. I'm new to the bluetooth code, so it's not clear to me why sco_send_frame is being passed frames that are larger than the MTU. cheers, Rich ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Bluez-devel mailing list Bluez-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bluez-devel ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642 _______________________________________________ Bluez-devel mailing list Bluez-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bluez-devel