mac80211: dont allow fragmentation and requeuing on A-MPDU queues
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>
diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index 54960b8..4df39eb 100644
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -986,8 +986,10 @@
* @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