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From: Sam Leffler <sam@FreeBSD.org>
Date: Fri, 13 Feb 2009 05:30:22 +0000 (UTC)
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Subject: svn commit: r188555 - head/sys/dev/ath
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Author: sam
Date: Fri Feb 13 05:30:22 2009
New Revision: 188555
URL: http://svn.freebsd.org/changeset/base/188555

Log:
  add driver stat to count tx drops due to insufficient frag buffers

Modified:
  head/sys/dev/ath/if_ath.c
  head/sys/dev/ath/if_athioctl.h

Modified: head/sys/dev/ath/if_ath.c
==============================================================================
--- head/sys/dev/ath/if_ath.c	Fri Feb 13 05:26:04 2009	(r188554)
+++ head/sys/dev/ath/if_ath.c	Fri Feb 13 05:30:22 2009	(r188555)
@@ -2071,7 +2071,6 @@ static void
 ath_start(struct ifnet *ifp)
 {
 	struct ath_softc *sc = ifp->if_softc;
-	struct ieee80211com *ic = ifp->if_l2com;
 	struct ieee80211_node *ni;
 	struct ath_buf *bf;
 	struct mbuf *m, *next;
@@ -2141,7 +2140,7 @@ ath_start(struct ifnet *ifp)
 		    !ath_txfrag_setup(sc, &frags, m, ni)) {
 			DPRINTF(sc, ATH_DEBUG_XMIT,
 			    "%s: out of txfrag buffers\n", __func__);
-			ic->ic_stats.is_tx_nobuf++;	/* XXX */
+			sc->sc_stats.ast_tx_nofrag++;
 			ath_freetx(m);
 			goto bad;
 		}

Modified: head/sys/dev/ath/if_athioctl.h
==============================================================================
--- head/sys/dev/ath/if_athioctl.h	Fri Feb 13 05:26:04 2009	(r188554)
+++ head/sys/dev/ath/if_athioctl.h	Fri Feb 13 05:30:22 2009	(r188555)
@@ -117,7 +117,8 @@ struct ath_stats {
 	u_int16_t	ast_tdma_tsfadjm;/* TDMA slot adjust- (usec, smoothed)*/
 	u_int32_t	ast_tdma_ack;	/* TDMA tx failed 'cuz ACK required */
 	u_int32_t	ast_tx_raw_fail;/* raw tx failed 'cuz h/w down */
-	u_int32_t	ast_pad[15];
+	u_int32_t	ast_tx_nofrag;	/* tx dropped 'cuz no ath frag buffer */
+	u_int32_t	ast_pad[14];
 };
 
 #define	SIOCGATHSTATS	_IOWR('i', 137, struct ifreq)