From: Jouni Malinen <j@w1.fi>
To: Johannes Berg <johannes@sipsolutions.net>
Cc: linux-wireless@vger.kernel.org, m.sujith@gmail.com, tomasw@gmail.com
Subject: Re: [RFC/RFT 06/11] mac80211: document TX aggregation (and small cleanup)
Date: Thu, 29 Jan 2009 23:51:52 +0200 [thread overview]
Message-ID: <20090129215152.GA27253@jm.kir.nu> (raw)
In-Reply-To: <20090129005808.843799105@sipsolutions.net>
On Thu, Jan 29, 2009 at 01:54:56AM +0100, Johannes Berg wrote:
> + * DOC: TX aggregation
> + * When TX aggregation is started by some subsystem (usually the rate control
> + * control algorithm would be appropriate) by calling the
> + * ieee80211_start_tx_ba_session() function, the driver will be notified via
> + * its @ampdu_action function, with the %IEEE80211_AMPDU_TX_START action.
Does rate control (btw, remove the duplicated "control" from the text)
algorithm have knowledge of whether PTK has already been configured?
There is going to be a somewhat unfortunate timing issue with trying to
set up aggregation before 4-way handshake has been completed if 802.11w
is used (Action frames are dropped before the keys are set). Something
in the system (either the request or mac80211's action on the request)
would need to be delayed until the keys are in place in such a case.
--
Jouni Malinen PGP id EFC895FA
next prev parent reply other threads:[~2009-01-29 21:52 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-29 0:54 [RFC/RFT 00/11] mac80211 HT code improvements/bug fixes Johannes Berg
2009-01-29 0:54 ` [RFC/RFT 01/11] mac80211: remove stray aggregation debugfs definition Johannes Berg
2009-01-29 0:54 ` [RFC/RFT 02/11] mac80211: fix RX aggregation timeouts Johannes Berg
2009-01-29 0:54 ` [RFC/RFT 03/11] mac80211: restructure HT code Johannes Berg
2009-01-29 0:54 ` [RFC/RFT 04/11] mac80211: restrict aggregation to supported interface modes Johannes Berg
2009-01-29 0:54 ` [RFC/RFT 05/11] mac80211: hardware should not deny going back to legacy Johannes Berg
2009-01-29 0:54 ` [RFC/RFT 06/11] mac80211: document TX aggregation (and small cleanup) Johannes Berg
2009-01-29 21:51 ` Jouni Malinen [this message]
2009-01-30 8:08 ` Johannes Berg
2009-01-29 0:54 ` [RFC/RFT 07/11] mac80211: fix race in TX aggregation Johannes Berg
2009-01-29 0:54 ` [RFC/RFT 08/11] mac80211: fix aggregation timer lockups Johannes Berg
2009-01-29 0:54 ` [RFC/RFT 09/11] mac80211: clean up BA session teardown Johannes Berg
2009-01-29 0:55 ` [RFC/RFT 10/11] mac80211: RX aggregation: clean up stop session Johannes Berg
2009-01-29 0:55 ` [RFC/RFT 11/11] mac80211: further cleanups to stopping BA sessions Johannes Berg
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