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From: Adrian Chadd <adrian@FreeBSD.org>
Date: Thu, 11 Aug 2011 20:30:23 +0000 (UTC)
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Subject: svn commit: r224788 - user/adrian/if_ath_tx/sys/dev/ath
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Author: adrian
Date: Thu Aug 11 20:30:22 2011
New Revision: 224788
URL: http://svn.freebsd.org/changeset/base/224788

Log:
  Add another TXQ method, this time to prepend packets to the TXQ head.

Modified:
  user/adrian/if_ath_tx/sys/dev/ath/if_athvar.h

Modified: user/adrian/if_ath_tx/sys/dev/ath/if_athvar.h
==============================================================================
--- user/adrian/if_ath_tx/sys/dev/ath/if_athvar.h	Thu Aug 11 20:29:38 2011	(r224787)
+++ user/adrian/if_ath_tx/sys/dev/ath/if_athvar.h	Thu Aug 11 20:30:22 2011	(r224788)
@@ -251,6 +251,10 @@ struct ath_txq {
 #define	ATH_TXQ_LOCK_ASSERT(_tq)	mtx_assert(&(_tq)->axq_lock, MA_OWNED)
 #define	ATH_TXQ_IS_LOCKED(_tq)		mtx_owned(&(_tq)->axq_lock)
 
+#define ATH_TXQ_INSERT_HEAD(_tq, _elm, _field) do { \
+	STAILQ_INSERT_HEAD(&(_tq)->axq_q, (_elm), _field); \
+	(_tq)->axq_depth++; \
+} while (0)
 #define ATH_TXQ_INSERT_TAIL(_tq, _elm, _field) do { \
 	STAILQ_INSERT_TAIL(&(_tq)->axq_q, (_elm), _field); \
 	(_tq)->axq_depth++; \