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From: Krishna Chaitanya <chaitanya.mgit@gmail.com>
To: Johannes Berg <johannes@sipsolutions.net>
Cc: Michal Kazior <michal.kazior@tieto.com>,
	linux-wireless <linux-wireless@vger.kernel.org>
Subject: Re: [PATCH] mac80211: disable u-APSD queues by default
Date: Tue, 3 Mar 2015 15:45:20 +0530	[thread overview]
Message-ID: <CABPxzYLbF-b5DKBBNo2PK5iDn64HuSo9N63mfT2fNfvgLhEFrQ@mail.gmail.com> (raw)
In-Reply-To: <1425375418.2450.27.camel@sipsolutions.net>

On Tue, Mar 3, 2015 at 3:06 PM, Johannes Berg <johannes@sipsolutions.net> wrote:
>
>> >> Cisco 4410N originally forced us to enable VO by
>> >> default only because it treated non-VO ACs as
>> >> legacy.
>
>> Mixed mode (uapsd + legacy) is not really the optimal
>> configuration, where we expect STA to send trigger frames periodically
>> to retrieve the DL packets (especially very first packet).
>>
>> But still if we want power save, i suggest going for
>> All u-apsd (0xF), so that AP will inform us by setting the TIM bit
>> and we can retrieve the first frame.
>> (We have this patch internally and it works well).
>
> Except where it doesn't work, like on the Cisco 4410N - see above.
But for that single AP, we are forced to lose efficient power savings
unless user configured explicitly.

  reply	other threads:[~2015-03-03 10:15 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-02-10 11:48 [PATCH] mac80211: disable u-APSD queues by default Michal Kazior
2015-03-03  9:16 ` Johannes Berg
2015-03-03  9:33   ` Krishna Chaitanya
2015-03-03  9:36     ` Johannes Berg
2015-03-03 10:15       ` Krishna Chaitanya [this message]
2015-03-03 10:28         ` Michal Kazior
2015-03-03 11:20           ` Krishna Chaitanya

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