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mac80211: dont allow fragmentation and requeuing on A-MPDU queues

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There really is no reason for a driver to reject a frame on
an A-MPDU queue when it can stop that queue for any period
of time and is given frames one by one. Hence, disallow it
with a big warning and reduce mac80211-internal state.

Also add a warning when we try to fragment a frame destined
for an A-MPDU queue and drop it, the actual bug needs to be
fixed elsewhere but I'm not exactly sure how to yet.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Cc: Ron Rindjunsky <ron.rindjunsky@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Johannes Berg
2008-05-17 00:57:13 +02:00
committed by John W. Linville
parent e93048825f
commit eefce91a38
3 changed files with 26 additions and 5 deletions
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6
include/net/mac80211.h
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@@ -986,8 +986,10 @@ enum ieee80211_ampdu_mlme_action {
* @tx: Handler that 802.11 module calls for each transmitted frame.
* skb contains the buffer starting from the IEEE 802.11 header.
* The low-level driver should send the frame out based on
* configuration in the TX control data. Must be implemented and
* atomic.
* configuration in the TX control data. This handler should,
* preferably, never fail and stop queues appropriately, more
* importantly, however, it must never fail for A-MPDU-queues.
* Must be implemented and atomic.
*
* @start: Called before the first netdevice attached to the hardware
* is enabled. This should turn on the hardware and must turn on