Return-Path: <cyrus@holtmann.org>
Date: Mon, 20 Sep 2010 12:19:42 +0300
From: Ville Tervo <ville.tervo@nokia.com>
To: ext haijun liu <liuhaijun.er@gmail.com>
Cc: "ext Gustavo F. Padovan" <padovan@profusion.mobi>,
	"linux-bluetooth@vger.kernel.org" <linux-bluetooth@vger.kernel.org>,
	Mat Martineau <mathewm@codeaurora.org>,
	"dantian.ip" <dantian.ip@gmail.com>
Subject: Re: [PATCH] Bluetooth: Replace hard code of fixed channels bit mask
Message-ID: <20100920091942.GQ14330@null>
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On Fri, Sep 17, 2010 at 01:39:30PM +0200, ext haijun liu wrote:
> Hi Ville,
> 
> On Fri, Sep 17, 2010 at 4:50 PM, Ville Tervo <ville.tervo@nokia.com> wrote:
> > Hi Gustavo,
> >
> > On Thu, Sep 16, 2010 at 04:16:54PM +0200, ext Gustavo F. Padovan wrote:
> >> Hi Haijun,
> >>
> >> * haijun liu <liuhaijun.er@gmail.com> [2010-09-16 15:15:18 +0800]:
> >>
> >> > This patch add fixed channels bit mask definition for
> >> > ? ? ? ? ? ? L2CAP_FIXCHAN_NULLID
> >> > ? ? ? ? ? ? L2CAP_FIXCHAN_SIGNAL
> >> > ? ? ? ? ? ? L2CAP_FIXCHAN_CONNLESS
> >> > ? ? ? ? ? ? L2CAP_FIXCHAN_A2MP
> >> > And replace hard code in source file with the macro.
> >> >
> >> > Signed-off-by: Haijun.Liu <Haijun.Liu@Atheros.com>
> >> > ---
> >> > ?include/net/bluetooth/l2cap.h | ? ?6 ++++++
> >> > ?net/bluetooth/l2cap.c ? ? ? ? | ? ?2 +-
> >> > ?2 files changed, 7 insertions(+), 1 deletions(-)
> >> >
> >> > diff --git a/include/net/bluetooth/l2cap.h b/include/net/bluetooth/l2cap.h
> >> > index 6c24144..e4fe2c7 100644
> >> > --- a/include/net/bluetooth/l2cap.h
> >> > +++ b/include/net/bluetooth/l2cap.h
> >> > @@ -97,6 +97,12 @@ struct l2cap_conninfo {
> >> > ?#define L2CAP_FEAT_FCS ? ? ? ? ? ? 0x00000020
> >> > ?#define L2CAP_FEAT_FIXED_CHAN ? ? ?0x00000080
> >> >
> >> > +/* L2CAP fixed channel bitmask */
> >> > +#define L2CAP_FIXCHAN_NULLID ? ? ? 0x00
> >> > +#define L2CAP_FIXCHAN_SIGNAL ? ? ? 0x02
> >> > +#define L2CAP_FIXCHAN_CONNLESS ? ? 0x04
> >> > +#define L2CAP_FIXCHAN_A2MP 0x08
> >>
> >> That's wrong, signaling channel is 0x01, connless is 0x02 and A2MP is
> >> 0x03. And if you haven't noted we already have macros for the signaling
> >> and connectionless channels:
> >
> > But these are bit masks and looks ok to me except L2CAP_FIXCHAN_A2MP which I
> > could not find from the list.. Check Vol 3 Part A 4.13.
> >
> >> #define L2CAP_CID_SIGNALING ? ? 0x0001
> >> #define L2CAP_CID_CONN_LESS ? ? 0x0002
> >
> > These are channel ids.
> >
> >
> > --
> > Ville
> >
> 
> A2MP means AMP Manager Protocol, it's from <<Core_V3.0 + HS.pdf>>

ok. I am a little bit lost with all AMP acromyns.

-- 
Ville