From owner-cvs-src@FreeBSD.ORG Tue Jan 11 01:39:54 2005 Return-Path: Delivered-To: cvs-src@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 2004916A4CE; Tue, 11 Jan 2005 01:39:54 +0000 (GMT) Received: from repoman.freebsd.org (repoman.freebsd.org [216.136.204.115]) by mx1.FreeBSD.org (Postfix) with ESMTP id 0B1BD43D31; Tue, 11 Jan 2005 01:39:54 +0000 (GMT) (envelope-from emax@FreeBSD.org) Received: from repoman.freebsd.org (localhost [127.0.0.1]) by repoman.freebsd.org (8.13.1/8.13.1) with ESMTP id j0B1drmp027049; Tue, 11 Jan 2005 01:39:53 GMT (envelope-from emax@repoman.freebsd.org) Received: (from emax@localhost) by repoman.freebsd.org (8.13.1/8.13.1/Submit) id j0B1drA5027048; Tue, 11 Jan 2005 01:39:53 GMT (envelope-from emax) Message-Id: <200501110139.j0B1drA5027048@repoman.freebsd.org> From: Maksim Yevmenkin Date: Tue, 11 Jan 2005 01:39:53 +0000 (UTC) To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org X-FreeBSD-CVS-Branch: HEAD Subject: cvs commit: src/sys/netgraph/bluetooth/include ng_btsocket_rfcomm.h X-BeenThere: cvs-src@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: CVS commit messages for the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 11 Jan 2005 01:39:54 -0000 emax 2005-01-11 01:39:53 UTC FreeBSD src repository Modified files: sys/netgraph/bluetooth/include ng_btsocket_rfcomm.h Log: Make default RFCOMM session MTU match default L2CAP MTU. This is just a workaround for a know problem with Motorola E1000 phone. Something is wrong with the configuration of L2CAP/RFCOMM channel. Even though we set L2CAP MTU to 132 bytes (default RFCOMM MTU 127 + 5 bytes RFCOMM frame header) and the phone accepts it, the phone still sends oversized L2CAP packets. It appears that the phone wants to use bigger (667 bytes) RFCOMM frames, but it does not segment them according to the configured L2CAP MTU. The 667 bytes RFCOMM frame size corresponds to the default L2CAP MTU of 672 bytes (667 + 5 bytes RFCOMM frame header). This problem only appears if connection was initiated from the phone. I'm not sure who is at fault here, so for now just put workaround in place. Quick look at the spec did not reveal any anwser. Tested by: Jes < jjess at freebsd dot polarhome dot com > MFC after: 3 days Revision Changes Path 1.4 +3 -3 src/sys/netgraph/bluetooth/include/ng_btsocket_rfcomm.h