Return-Path: Subject: Re: Keeping ACL link around after DBUS CreateBonding() From: Marcel Holtmann To: Nick Pelly Cc: johan.hedberg@gmail.com, linux-bluetooth@vger.kernel.org In-Reply-To: <35c90d960810022342p1fca607x4be774ae9e675fd9@mail.gmail.com> References: <35c90d960810021747j56d5bc2ie62c10ade0026694@mail.gmail.com> <1223015762.11272.30.camel@violet.holtmann.net> <35c90d960810022342p1fca607x4be774ae9e675fd9@mail.gmail.com> Content-Type: text/plain Date: Fri, 03 Oct 2008 08:56:25 +0200 Message-Id: <1223016985.11272.38.camel@violet.holtmann.net> Mime-Version: 1.0 Sender: linux-bluetooth-owner@vger.kernel.org List-ID: Hi Nick, > >> I have memories of one of you talking about a custom change to bluez > >> to not immediately drop the ACL link once DBUS CreateBonding() has > >> finished (so that SDP can then be done on that link). > >> > >> Do you know the patch to do this? I am currently experimenting with > >> changing the timer expiry in hci_conn_put() for disc_timer. Maybe > >> there's a nicer way. > > > > do you have a trace in BTSnoop format for me. We are using L2CAP raw > > sockets for bonding and thus the default 2 seconds disconnect timeout > > applies. Enough time to get SDP started on the same link. If the remote > > side however decides to disconnect us, we are out of luck. > > For this situation the ACL connection is not complete, so the 10ms > timeout applies. I have a patch to use the 2 second timeout code path > for both connecting and connected. I wonder if this would be useful in > mainline, or if this is just a strange behavior of our BRF6300 (it > completes pin code and link key before the ACL link is reported as > connected). I'll send you some logs tomorrow if that would still help. that is not strange behavior. That is just a device in security mode 3. The important question is who disconnects the link. Regards Marcel