From: Johannes Berg <johannes@sipsolutions.net>
To: Luca Coelho <luca@coelho.fi>
Cc: linux-wireless@vger.kernel.org,
Emmanuel Grumbach <emmanuel.grumbach@intel.com>,
Luca Coelho <luciano.coelho@intel.com>
Subject: Re: [PATCH 1/5] mac80211: always update the PM state of a peer on MGMT / DATA frames
Date: Mon, 30 Oct 2017 09:48:20 +0100 [thread overview]
Message-ID: <1509353300.2637.2.camel@sipsolutions.net> (raw)
In-Reply-To: <20171029095111.17078-2-luca@coelho.fi>
On Sun, 2017-10-29 at 11:51 +0200, Luca Coelho wrote:
> From: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
>
> The 2016 version of the spec is more generic about when the
> AP should update the power management state of the peer:
> the AP shall update the state based on any management or
> data frames. This means that even non-bufferable management
> frames should be looked at to update to maintain the power
> management state of the peer.
>
> This can avoid problematic cases for example if a station
> disappears while being asleep and then re-appears. The AP
> would remember it as in power save, but the Authentication
> frame couldn't be used to set the peer as awake again.
> Note that this issues wasn't really critical since at some
> point (after the association) we would have removed the
> station and created another one with all the states cleared.
IIRC this caused a hwsim test failure - is that addressed yet?
johannes
next prev parent reply other threads:[~2017-10-30 8:48 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-29 9:51 [PATCH 0/5] cfg80211/mac80211 patches from our internal tree 2017-10-29 Luca Coelho
2017-10-29 9:51 ` [PATCH 1/5] mac80211: always update the PM state of a peer on MGMT / DATA frames Luca Coelho
2017-10-30 8:48 ` Johannes Berg [this message]
2017-12-01 11:48 ` Luciano Coelho
2017-12-01 12:09 ` Johannes Berg
2017-12-01 13:07 ` Luciano Coelho
2017-10-29 9:51 ` [PATCH 2/5] mac80211: call synchronize_net once in the restart flow Luca Coelho
2017-10-29 9:51 ` [PATCH 3/5] mac80211: tear down RX aggregations first Luca Coelho
2017-10-29 9:51 ` [PATCH 4/5] mac80211: remove BUG() when interface type is invalid Luca Coelho
2017-10-29 9:51 ` [PATCH 5/5] cfg80211: IBSS: Add support for static WEP in driver for IBSS Luca Coelho
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