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From: Adrian Chadd <adrian@FreeBSD.org>
Date: Wed, 17 Aug 2011 15:13:07 +0000 (UTC)
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Subject: svn commit: r224943 - user/adrian/if_ath_tx/sys/dev/ath
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Author: adrian
Date: Wed Aug 17 15:13:07 2011
New Revision: 224943
URL: http://svn.freebsd.org/changeset/base/224943

Log:
  Comment what SHOULD happen.

Modified:
  user/adrian/if_ath_tx/sys/dev/ath/if_ath_tx_ht.c

Modified: user/adrian/if_ath_tx/sys/dev/ath/if_ath_tx_ht.c
==============================================================================
--- user/adrian/if_ath_tx/sys/dev/ath/if_ath_tx_ht.c	Wed Aug 17 14:39:45 2011	(r224942)
+++ user/adrian/if_ath_tx/sys/dev/ath/if_ath_tx_ht.c	Wed Aug 17 15:13:07 2011	(r224943)
@@ -369,8 +369,11 @@ ath_tx_form_aggr(struct ath_softc *sc, s
 		 */
 
 		/*
-		 * If the frame doesn't have a sequence number, we can't
-		 * aggregate it.
+		 * If the frame doesn't have a sequence number that we're
+		 * tracking in the BAW (eg NULL QOS data frame), we can't
+		 * aggregate it. Stop the aggregation process; the sender
+		 * can then TX what's in the list thus far and then
+		 * TX the frame individually.
 		 */
 		if (! bf->bf_state.bfs_dobaw) {
 			ATH_TXQ_UNLOCK(tid);