From a37c2c79404940dfc5e88c851c3de5328975b1a9 Mon Sep 17 00:00:00 2001 From: Sujith Date: Wed, 29 Oct 2008 10:15:40 +0530 Subject: [PATCH] ath9k: Use bitfields to store tid's state in a single variable Signed-off-by: Sujith Signed-off-by: John W. Linville --- drivers/net/wireless/ath9k/core.h | 8 +++-- drivers/net/wireless/ath9k/rc.c | 4 +-- drivers/net/wireless/ath9k/xmit.c | 49 +++++++++++++------------------ 3 files changed, 27 insertions(+), 34 deletions(-) diff --git a/drivers/net/wireless/ath9k/core.h b/drivers/net/wireless/ath9k/core.h index 27ed084d85cd..d89dd03eaed7 100644 --- a/drivers/net/wireless/ath9k/core.h +++ b/drivers/net/wireless/ath9k/core.h @@ -447,6 +447,10 @@ struct ath_txq { struct list_head axq_acq; }; +#define AGGR_CLEANUP BIT(1) +#define AGGR_ADDBA_COMPLETE BIT(2) +#define AGGR_ADDBA_PROGRESS BIT(3) + /* per TID aggregate tx state for a destination */ struct ath_atx_tid { struct list_head list; /* round-robin tid entry */ @@ -462,9 +466,7 @@ struct ath_atx_tid { int baw_tail; /* next unused tx buffer slot */ int sched; int paused; - int cleanup_inprogress; - u32 addba_exchangecomplete:1; - int32_t addba_exchangeinprogress; + u8 state; int addba_exchangeattempts; }; diff --git a/drivers/net/wireless/ath9k/rc.c b/drivers/net/wireless/ath9k/rc.c index 02931a111f1a..ff283dca7328 100644 --- a/drivers/net/wireless/ath9k/rc.c +++ b/drivers/net/wireless/ath9k/rc.c @@ -1909,8 +1909,8 @@ static void ath_tx_aggr_resp(struct ath_softc *sc, state = si->ampdu_mlme.tid_state_tx[tidno]; if (state & HT_ADDBA_RECEIVED_MSK) { - txtid->addba_exchangecomplete = 1; - txtid->addba_exchangeinprogress = 0; + txtid->state |= AGGR_ADDBA_COMPLETE; + txtid->state &= ~AGGR_ADDBA_PROGRESS; txtid->baw_size = buffersize; DPRINTF(sc, ATH_DBG_AGGR, diff --git a/drivers/net/wireless/ath9k/xmit.c b/drivers/net/wireless/ath9k/xmit.c index bd902468868f..f41030d1a687 100644 --- a/drivers/net/wireless/ath9k/xmit.c +++ b/drivers/net/wireless/ath9k/xmit.c @@ -125,13 +125,13 @@ static int ath_tx_findindex(const struct ath9k_rate_table *rt, int rate) /* Check if it's okay to send out aggregates */ -static int ath_aggr_query(struct ath_softc *sc, - struct ath_node *an, u8 tidno) +static int ath_aggr_query(struct ath_softc *sc, struct ath_node *an, u8 tidno) { struct ath_atx_tid *tid; tid = ATH_AN_2_TID(an, tidno); - if (tid->addba_exchangecomplete || tid->addba_exchangeinprogress) + if (tid->state & AGGR_ADDBA_COMPLETE || + tid->state & AGGR_ADDBA_PROGRESS) return 1; else return 0; @@ -886,7 +886,7 @@ static void ath_tx_complete_aggr_rifs(struct ath_softc *sc, /* transmit completion */ } else { - if (!tid->cleanup_inprogress && + if (!(tid->state & AGGR_CLEANUP) && ds->ds_txstat.ts_flags != ATH9K_TX_SW_ABORTED) { if (bf->bf_retries < ATH_MAX_SW_RETRIES) { ath_tx_set_retry(sc, bf); @@ -1014,16 +1014,16 @@ static void ath_tx_complete_aggr_rifs(struct ath_softc *sc, bf = bf_next; } - if (tid->cleanup_inprogress) { + if (tid->state & AGGR_CLEANUP) { /* check to see if we're done with cleaning the h/w queue */ spin_lock_bh(&txq->axq_lock); if (tid->baw_head == tid->baw_tail) { - tid->addba_exchangecomplete = 0; + tid->state &= ~AGGR_ADDBA_COMPLETE; tid->addba_exchangeattempts = 0; spin_unlock_bh(&txq->axq_lock); - tid->cleanup_inprogress = false; + tid->state &= ~AGGR_CLEANUP; /* send buffered frames as singles */ ath_tx_flush_tid(sc, tid); @@ -2335,17 +2335,8 @@ enum ATH_AGGR_CHECK ath_tx_aggr_check(struct ath_softc *sc, /* ADDBA exchange must be completed before sending aggregates */ txtid = ATH_AN_2_TID(an, tidno); - if (txtid->addba_exchangecomplete) - return AGGR_EXCHANGE_DONE; - - if (txtid->cleanup_inprogress) - return AGGR_CLEANUP_PROGRESS; - - if (txtid->addba_exchangeinprogress) - return AGGR_EXCHANGE_PROGRESS; - - if (!txtid->addba_exchangecomplete) { - if (!txtid->addba_exchangeinprogress && + if (!(txtid->state & AGGR_ADDBA_COMPLETE)) { + if (!(txtid->state & AGGR_ADDBA_PROGRESS) && (txtid->addba_exchangeattempts < ADDBA_EXCHANGE_ATTEMPTS)) { txtid->addba_exchangeattempts++; return AGGR_REQUIRED; @@ -2367,7 +2358,7 @@ int ath_tx_aggr_start(struct ath_softc *sc, struct ieee80211_sta *sta, if (sc->sc_flags & SC_OP_TXAGGR) { txtid = ATH_AN_2_TID(an, tid); - txtid->addba_exchangeinprogress = 1; + txtid->state |= AGGR_ADDBA_PROGRESS; ath_tx_pause_tid(sc, txtid); } @@ -2401,10 +2392,10 @@ void ath_tx_aggr_teardown(struct ath_softc *sc, struct ath_node *an, u8 tid) DPRINTF(sc, ATH_DBG_AGGR, "%s: teardown TX aggregation\n", __func__); - if (txtid->cleanup_inprogress) /* cleanup is in progress */ + if (txtid->state & AGGR_CLEANUP) /* cleanup is in progress */ return; - if (!txtid->addba_exchangecomplete) { + if (!(txtid->state & AGGR_ADDBA_COMPLETE)) { txtid->addba_exchangeattempts = 0; return; } @@ -2434,9 +2425,9 @@ void ath_tx_aggr_teardown(struct ath_softc *sc, struct ath_node *an, u8 tid) if (txtid->baw_head != txtid->baw_tail) { spin_unlock_bh(&txq->axq_lock); - txtid->cleanup_inprogress = true; + txtid->state |= AGGR_CLEANUP; } else { - txtid->addba_exchangecomplete = 0; + txtid->state &= ~AGGR_ADDBA_COMPLETE; txtid->addba_exchangeattempts = 0; spin_unlock_bh(&txq->axq_lock); ath_tx_flush_tid(sc, txtid); @@ -2527,16 +2518,16 @@ void ath_tx_node_init(struct ath_softc *sc, struct ath_node *an) tid->baw_head = tid->baw_tail = 0; tid->sched = false; tid->paused = false; - tid->cleanup_inprogress = false; + tid->state &= ~AGGR_CLEANUP; INIT_LIST_HEAD(&tid->buf_q); acno = TID_TO_WME_AC(tidno); tid->ac = &an->an_aggr.tx.ac[acno]; /* ADDBA state */ - tid->addba_exchangecomplete = 0; - tid->addba_exchangeinprogress = 0; - tid->addba_exchangeattempts = 0; + tid->state &= ~AGGR_ADDBA_COMPLETE; + tid->state &= ~AGGR_ADDBA_PROGRESS; + tid->addba_exchangeattempts = 0; } /* @@ -2596,9 +2587,9 @@ void ath_tx_node_cleanup(struct ath_softc *sc, struct ath_node *an) list_del(&tid->list); tid->sched = false; ath_tid_drain(sc, txq, tid); - tid->addba_exchangecomplete = 0; + tid->state &= ~AGGR_ADDBA_COMPLETE; tid->addba_exchangeattempts = 0; - tid->cleanup_inprogress = false; + tid->state &= ~AGGR_CLEANUP; } } -- 2.20.1