To: Mauro Tortonesi <mtortonesi@ing.unife.it>
Cc: BlueZ mailing list <bluez-devel@lists.sourceforge.net>
Subject: Re: [Bluez-devel] Re: bluez & qos
Message-ID: <20040205172242.GB5417@bougret.hpl.hp.com>
Reply-To: jt@hpl.hp.com
References: <20040204015825.GA2217@bougret.hpl.hp.com> <200402041223.29088.mtortonesi@ing.unife.it> <20040204174648.GA16590@bougret.hpl.hp.com> <200402051146.55939.mtortonesi@ing.unife.it>
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In-Reply-To: <200402051146.55939.mtortonesi@ing.unife.it>
From: Jean Tourrilhes <jt@bougret.hpl.hp.com>
Sender: bluez-devel-admin@lists.sourceforge.net
Errors-To: bluez-devel-admin@lists.sourceforge.net
Date: Thu, 5 Feb 2004 09:22:42 -0800

On Thu, Feb 05, 2004 at 11:46:55AM +0100, Mauro Tortonesi wrote:
> 
> i think the "open a HCI socket and send HCI commands" approach (which indeed 
> has many advantages) is a bit too low-level to be used in standard 
> applications as a way for setting QoS over Bluez.
> since QoS is semantically an attribute of a connection, it would be nice to 
> have ioctl(2) commands for setting QoS parameters on a given connection.

	Aggregating the QoS of the various sockets into a generic QoS
that you can pass to the HCI is not a trivial problem. You can not
guarantee that there will only be one socket per handle.

> > 	Not that the main issue will be firware support. For example
> > the QoS feature I needed is not implemented in the CSR firmware.
> 
> do you mean that most of the firmware of the Bluetooth chips in commerce do 
> not support/implement HCI QoS commands (such as OGF 0x0002 OCF 0x0007)? what 
> version of CSR firmware are you talking about?

	No, I'm saying "the QoS feature I *needed*". I want QoS
*events*, most firmware don't support that.

> Mauro Tortonesi

	Ciao.

	Jean


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