From: Ivo van Doorn <ivdoorn@gmail.com>
To: Johannes Berg <johannes@sipsolutions.net>
Cc: Kalle Valo <kalle.valo@iki.fi>,
Vivek Natarajan <vivek.natraj@gmail.com>,
linux-wireless@vger.kernel.org
Subject: Re: [PATCH] mac80211: Always send a null data frame if TIM bit is set.
Date: Thu, 2 Apr 2009 19:30:04 +0200 [thread overview]
Message-ID: <200904021930.06031.IvDoorn@gmail.com> (raw)
In-Reply-To: <1238666571.4141.14.camel@johannes.local>
On Thursday 02 April 2009, Johannes Berg wrote:
> On Thu, 2009-04-02 at 08:52 +0300, Kalle Valo wrote:
>
> > I really would like to have some frame ack callback to mac80211, even
> > not all drivers support that. Otherwise we cannot reliably go to power
> > save because the AP might not receive our nullfunc frame. I have to
> > think about this and I'll try to propose something later on.
>
> I suppose we could well assume that we do get TX status for those
> devices that do support power save -- which devices would that affect?
rt2500usb and rt73usb don't provide a valid TX status but do support
power save at he moment. I have to add that I'm in contact with somebody
who is looking into supporting Ack-based TX status reporting in mac80211
which could cure this problem. I have directed him to the linux-wireless list
so he will probably soon send his ideas to the list.
In any case, for now we can assume rt2500usb and rt73usb to be a problem.
Ivo
prev parent reply other threads:[~2009-04-02 17:30 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-03-02 14:50 [PATCH] mac80211: Always send a null data frame if TIM bit is set Vivek Natarajan
2009-03-04 10:55 ` Kalle Valo
2009-04-01 4:15 ` Vivek Natarajan
2009-04-02 5:52 ` Kalle Valo
2009-04-02 10:02 ` Johannes Berg
2009-04-02 17:30 ` Ivo van Doorn [this message]
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