Shrink ath_buf a little more:

* Resize some types.  In particular, bfs_seqno can be uint16_t for now.
  Previous work would assign the unassigned seqno a value of -1, which
  I obviously can't do here.

* Remove bfs_pktdur.  It was in the original code but nothing so far uses
  it.

This gets ath_buf down (on my i386 system) to 292 bytes from 300 bytes.
I'd rather it be much, much smaller.

1 files changed, 8 insertions, 7 deletions

diff --git a/sys/dev/ath/if_athvar.h b/sys/dev/ath/if_athvar.h
index d58c83fc3a5f..2665c33880f9 100644
--- a/sys/dev/ath/if_athvar.h
+++ b/sys/dev/ath/if_athvar.h
@@ -211,15 +211,16 @@ struct ath_buf {
 
 	/* This state is kept to support software retries and aggregation */
 	struct {
-		int bfs_seqno;		/* sequence number of this packet */
-		int bfs_retries;	/* retry count */
-		uint16_t bfs_tid;	/* packet TID (or TID_MAX for no QoS) */
-		uint16_t bfs_pri;	/* packet AC priority */
-		struct ath_txq *bfs_txq;	/* eventual dest hardware TXQ */
-		uint16_t bfs_pktdur;	/* packet duration (at current rate?) */
-		uint16_t bfs_nframes;	/* number of frames in aggregate */
+		uint16_t bfs_seqno;	/* sequence number of this packet */
 		uint16_t bfs_ndelim;	/* number of delims for padding */
 
+		uint8_t bfs_retries;	/* retry count */
+		uint8_t bfs_tid;	/* packet TID (or TID_MAX for no QoS) */
+		uint8_t bfs_nframes;	/* number of frames in aggregate */
+		uint8_t bfs_pri;	/* packet AC priority */
+
+		struct ath_txq *bfs_txq;	/* eventual dest hardware TXQ */
+
 		u_int32_t bfs_aggr:1,		/* part of aggregate? */
 		    bfs_aggrburst:1,	/* part of aggregate burst? */
 		    bfs_isretried:1,	/* retried frame? */