Date: Sun, 21 Aug 2011 03:48:07 +0000 (UTC) From: Adrian Chadd <adrian@FreeBSD.org> To: src-committers@freebsd.org, svn-src-user@freebsd.org Subject: svn commit: r225055 - user/adrian/if_ath_tx/sys/dev/ath Message-ID: <201108210348.p7L3m7U6081187@svn.freebsd.org>
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Author: adrian Date: Sun Aug 21 03:48:07 2011 New Revision: 225055 URL: http://svn.freebsd.org/changeset/base/225055 Log: * Correctly lock stuff during ath_txq_sched() * Add the aggregate packet counter * For now, don't try to queue further work to a TXQ if there's more than two packets queued to it. This is an attempt to give the aggregation code more time to form aggregates. Modified: user/adrian/if_ath_tx/sys/dev/ath/if_ath_tx.c Modified: user/adrian/if_ath_tx/sys/dev/ath/if_ath_tx.c ============================================================================== --- user/adrian/if_ath_tx/sys/dev/ath/if_ath_tx.c Sun Aug 21 03:12:07 2011 (r225054) +++ user/adrian/if_ath_tx/sys/dev/ath/if_ath_tx.c Sun Aug 21 03:48:07 2011 (r225055) @@ -2928,6 +2928,7 @@ ath_tx_tid_hw_queue_aggr(struct ath_soft bf->bf_state.bfs_al); bf->bf_state.bfs_aggr = 1; sc->sc_stats.tx_aggr.aggr_pkts[bf->bf_state.bfs_nframes]++; + sc->sc_stats.tx_aggr.aggr_aggr_pkt++; /* Set rate 1, 2, 3 to 0 for aggregate frames */ bf->bf_state.bfs_rc[1].rix = @@ -2961,6 +2962,10 @@ ath_tx_tid_hw_queue_aggr(struct ath_soft /* Punt to txq */ ATH_TXQ_LOCK(txq); ath_tx_handoff(sc, txq, bf); + if (txq->axq_depth > ATH_AGGR_MIN_QDEPTH) { + ATH_TXQ_UNLOCK(txq); + break; + } ATH_TXQ_UNLOCK(txq); /* @@ -3058,11 +3063,26 @@ ath_txq_sched(struct ath_softc *sc, stru struct ath_tid *atid, *next; /* + * Don't schedule if the hardware queue is busy. + * This (hopefully) gives some more time to aggregate + * some packets in the aggregation queue. + * XXX TODO: only do this based on AMPDU buffersj, not + * XXX normal ones. + */ + ATH_TXQ_LOCK(txq); + if (txq->axq_depth >= ATH_AGGR_MIN_QDEPTH) { + ATH_TXQ_UNLOCK(txq); + return; + } + + /* * For now, let's not worry about QoS, fair-scheduling * or the like. That's a later problem. Just throw * packets at the hardware. */ + /* XXX txq is already locked */ TAILQ_FOREACH_SAFE(atid, &txq->axq_tidq, axq_qelem, next) { + ATH_TXQ_UNLOCK(txq); /* * Suspend paused queues here; they'll be resumed * once the addba completes or times out. @@ -3077,7 +3097,7 @@ ath_txq_sched(struct ath_softc *sc, stru ATH_TXQ_UNLOCK(atid); ATH_TXQ_LOCK(txq); ath_tx_tid_unsched(sc, atid->an, atid->tid); - ATH_TXQ_UNLOCK(txq); + //ATH_TXQ_UNLOCK(txq); continue; } ATH_TXQ_UNLOCK(atid); @@ -3090,8 +3110,13 @@ ath_txq_sched(struct ath_softc *sc, stru ATH_TXQ_LOCK(txq); if (atid->axq_depth == 0) ath_tx_tid_unsched(sc, atid->an, atid->tid); - ATH_TXQ_UNLOCK(txq); + if (txq->axq_depth > ATH_AGGR_MIN_QDEPTH) { + //ATH_TXQ_UNLOCK(txq); + break; + } + //ATH_TXQ_UNLOCK(txq); } + ATH_TXQ_UNLOCK(txq); } /*
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