From: Felix Fietkau Date: Sat, 4 Apr 2015 18:39:06 +0200 Subject: [PATCH] ath9k: remove struct ath_atx_ac struct ath_atx_ac contains a list of active TIDs belonging to one WMM AC. This patch changes the code to track active station TIDs in the txq directly. Signed-off-by: Felix Fietkau --- --- a/drivers/net/wireless/ath/ath9k/ath9k.h +++ b/drivers/net/wireless/ath/ath9k/ath9k.h @@ -173,14 +173,6 @@ struct ath_txq { struct sk_buff_head complete_q; }; -struct ath_atx_ac { - struct ath_txq *txq; - struct list_head list; - struct list_head tid_q; - bool clear_ps_filter; - bool sched; -}; - struct ath_frame_info { struct ath_buf *bf; u16 framelen; @@ -243,7 +235,7 @@ struct ath_atx_tid { struct sk_buff_head buf_q; struct sk_buff_head retry_q; struct ath_node *an; - struct ath_atx_ac *ac; + struct ath_txq *txq; unsigned long tx_buf[BITS_TO_LONGS(ATH_TID_MAX_BUFS)]; u16 seq_start; u16 seq_next; @@ -255,6 +247,7 @@ struct ath_atx_tid { s8 bar_index; bool sched; bool active; + bool clear_ps_filter; }; struct ath_node { @@ -262,7 +255,6 @@ struct ath_node { struct ieee80211_sta *sta; /* station struct we're part of */ struct ieee80211_vif *vif; /* interface with which we're associated */ struct ath_atx_tid tid[IEEE80211_NUM_TIDS]; - struct ath_atx_ac ac[IEEE80211_NUM_ACS]; u16 maxampdu; u8 mpdudensity; --- a/drivers/net/wireless/ath/ath9k/xmit.c +++ b/drivers/net/wireless/ath/ath9k/xmit.c @@ -106,7 +106,6 @@ void ath_txq_unlock_complete(struct ath_ static void ath_tx_queue_tid(struct ath_softc *sc, struct ath_txq *txq, struct ath_atx_tid *tid) { - struct ath_atx_ac *ac = tid->ac; struct list_head *list; struct ath_vif *avp = (struct ath_vif *) tid->an->vif->drv_priv; struct ath_chanctx *ctx = avp->chanctx; @@ -118,15 +117,8 @@ static void ath_tx_queue_tid(struct ath_ return; tid->sched = true; - list_add_tail(&tid->list, &ac->tid_q); - - if (ac->sched) - return; - - ac->sched = true; - list = &ctx->acq[TID_TO_WME_AC(tid->tidno)]; - list_add_tail(&ac->list, list); + list_add_tail(&tid->list, list); } static struct ath_frame_info *get_frame_info(struct sk_buff *skb) @@ -223,7 +215,7 @@ static struct sk_buff *ath_tid_dequeue(s static void ath_tx_tid_change_state(struct ath_softc *sc, struct ath_atx_tid *tid) { - struct ath_txq *txq = tid->ac->txq; + struct ath_txq *txq = tid->txq; struct ieee80211_tx_info *tx_info; struct sk_buff *skb, *tskb; struct ath_buf *bf; @@ -252,7 +244,7 @@ ath_tx_tid_change_state(struct ath_softc static void ath_tx_flush_tid(struct ath_softc *sc, struct ath_atx_tid *tid) { - struct ath_txq *txq = tid->ac->txq; + struct ath_txq *txq = tid->txq; struct sk_buff *skb; struct ath_buf *bf; struct list_head bf_head; @@ -659,7 +651,7 @@ static void ath_tx_complete_aggr(struct ath_tx_queue_tid(sc, txq, tid); if (ts->ts_status & (ATH9K_TXERR_FILT | ATH9K_TXERR_XRETRY)) - tid->ac->clear_ps_filter = true; + tid->clear_ps_filter = true; } } @@ -749,7 +741,7 @@ static u32 ath_lookup_rate(struct ath_so struct ieee80211_tx_rate *rates; u32 max_4ms_framelen, frmlen; u16 aggr_limit, bt_aggr_limit, legacy = 0; - int q = tid->ac->txq->mac80211_qnum; + int q = tid->txq->mac80211_qnum; int i; skb = bf->bf_mpdu; @@ -1486,8 +1478,8 @@ static bool ath_tx_sched_aggr(struct ath if (list_empty(&bf_q)) return false; - if (tid->ac->clear_ps_filter || tid->an->no_ps_filter) { - tid->ac->clear_ps_filter = false; + if (tid->clear_ps_filter || tid->an->no_ps_filter) { + tid->clear_ps_filter = false; tx_info->flags |= IEEE80211_TX_CTL_CLEAR_PS_FILT; } @@ -1506,7 +1498,7 @@ int ath_tx_aggr_start(struct ath_softc * an = (struct ath_node *)sta->drv_priv; txtid = ATH_AN_2_TID(an, tid); - txq = txtid->ac->txq; + txq = txtid->txq; ath_txq_lock(sc, txq); @@ -1540,7 +1532,7 @@ void ath_tx_aggr_stop(struct ath_softc * { struct ath_node *an = (struct ath_node *)sta->drv_priv; struct ath_atx_tid *txtid = ATH_AN_2_TID(an, tid); - struct ath_txq *txq = txtid->ac->txq; + struct ath_txq *txq = txtid->txq; ath_txq_lock(sc, txq); txtid->active = false; @@ -1553,7 +1545,6 @@ void ath_tx_aggr_sleep(struct ieee80211_ struct ath_node *an) { struct ath_atx_tid *tid; - struct ath_atx_ac *ac; struct ath_txq *txq; bool buffered; int tidno; @@ -1561,8 +1552,7 @@ void ath_tx_aggr_sleep(struct ieee80211_ for (tidno = 0, tid = &an->tid[tidno]; tidno < IEEE80211_NUM_TIDS; tidno++, tid++) { - ac = tid->ac; - txq = ac->txq; + txq = tid->txq; ath_txq_lock(sc, txq); @@ -1576,11 +1566,6 @@ void ath_tx_aggr_sleep(struct ieee80211_ tid->sched = false; list_del(&tid->list); - if (ac->sched) { - ac->sched = false; - list_del(&ac->list); - } - ath_txq_unlock(sc, txq); ieee80211_sta_set_buffered(sta, tidno, buffered); @@ -1590,18 +1575,16 @@ void ath_tx_aggr_sleep(struct ieee80211_ void ath_tx_aggr_wakeup(struct ath_softc *sc, struct ath_node *an) { struct ath_atx_tid *tid; - struct ath_atx_ac *ac; struct ath_txq *txq; int tidno; for (tidno = 0, tid = &an->tid[tidno]; tidno < IEEE80211_NUM_TIDS; tidno++, tid++) { - ac = tid->ac; - txq = ac->txq; + txq = tid->txq; ath_txq_lock(sc, txq); - ac->clear_ps_filter = true; + tid->clear_ps_filter = true; if (ath_tid_has_buffered(tid)) { ath_tx_queue_tid(sc, txq, tid); @@ -1621,7 +1604,7 @@ void ath_tx_aggr_resume(struct ath_softc an = (struct ath_node *)sta->drv_priv; tid = ATH_AN_2_TID(an, tidno); - txq = tid->ac->txq; + txq = tid->txq; ath_txq_lock(sc, txq); @@ -1660,7 +1643,7 @@ void ath9k_release_buffered_frames(struc tid = ATH_AN_2_TID(an, i); - ath_txq_lock(sc, tid->ac->txq); + ath_txq_lock(sc, tid->txq); while (nframes > 0) { bf = ath_tx_get_tid_subframe(sc, sc->tx.uapsdq, tid, &tid_q); if (!bf) @@ -1684,7 +1667,7 @@ void ath9k_release_buffered_frames(struc if (an->sta && !ath_tid_has_buffered(tid)) ieee80211_sta_set_buffered(an->sta, i, false); } - ath_txq_unlock_complete(sc, tid->ac->txq); + ath_txq_unlock_complete(sc, tid->txq); } if (list_empty(&bf_q)) @@ -1933,9 +1916,8 @@ void ath_tx_cleanupq(struct ath_softc *s void ath_txq_schedule(struct ath_softc *sc, struct ath_txq *txq) { struct ath_common *common = ath9k_hw_common(sc->sc_ah); - struct ath_atx_ac *ac, *last_ac; struct ath_atx_tid *tid, *last_tid; - struct list_head *ac_list; + struct list_head *tid_list; bool sent = false; if (txq->mac80211_qnum < 0) @@ -1945,63 +1927,46 @@ void ath_txq_schedule(struct ath_softc * return; spin_lock_bh(&sc->chan_lock); - ac_list = &sc->cur_chan->acq[txq->mac80211_qnum]; + tid_list = &sc->cur_chan->acq[txq->mac80211_qnum]; - if (list_empty(ac_list)) { + if (list_empty(tid_list)) { spin_unlock_bh(&sc->chan_lock); return; } rcu_read_lock(); - last_ac = list_entry(ac_list->prev, struct ath_atx_ac, list); - while (!list_empty(ac_list)) { + last_tid = list_entry(tid_list->prev, struct ath_atx_tid, list); + while (!list_empty(tid_list)) { bool stop = false; if (sc->cur_chan->stopped) break; - ac = list_first_entry(ac_list, struct ath_atx_ac, list); - last_tid = list_entry(ac->tid_q.prev, struct ath_atx_tid, list); - list_del(&ac->list); - ac->sched = false; - - while (!list_empty(&ac->tid_q)) { - - tid = list_first_entry(&ac->tid_q, struct ath_atx_tid, - list); - list_del(&tid->list); - tid->sched = false; - - if (ath_tx_sched_aggr(sc, txq, tid, &stop)) - sent = true; - - /* - * add tid to round-robin queue if more frames - * are pending for the tid - */ - if (ath_tid_has_buffered(tid)) - ath_tx_queue_tid(sc, txq, tid); + tid = list_first_entry(tid_list, struct ath_atx_tid, list); + list_del(&tid->list); + tid->sched = false; - if (stop || tid == last_tid) - break; - } + if (ath_tx_sched_aggr(sc, txq, tid, &stop)) + sent = true; - if (!list_empty(&ac->tid_q) && !ac->sched) { - ac->sched = true; - list_add_tail(&ac->list, ac_list); - } + /* + * add tid to round-robin queue if more frames + * are pending for the tid + */ + if (ath_tid_has_buffered(tid)) + ath_tx_queue_tid(sc, txq, tid); if (stop) break; - if (ac == last_ac) { + if (tid == last_tid) { if (!sent) break; sent = false; - last_ac = list_entry(ac_list->prev, - struct ath_atx_ac, list); + last_tid = list_entry(tid_list->prev, + struct ath_atx_tid, list); } } @@ -2391,10 +2356,10 @@ int ath_tx_start(struct ieee80211_hw *hw txq = sc->tx.uapsdq; ath_txq_lock(sc, txq); } else if (txctl->an && queue) { - WARN_ON(tid->ac->txq != txctl->txq); + WARN_ON(tid->txq != txctl->txq); if (info->flags & IEEE80211_TX_CTL_CLEAR_PS_FILT) - tid->ac->clear_ps_filter = true; + tid->clear_ps_filter = true; /* * Add this frame to software queue for scheduling later @@ -2888,7 +2853,6 @@ int ath_tx_init(struct ath_softc *sc, in void ath_tx_node_init(struct ath_softc *sc, struct ath_node *an) { struct ath_atx_tid *tid; - struct ath_atx_ac *ac; int tidno, acno; for (tidno = 0, tid = &an->tid[tidno]; @@ -2901,24 +2865,16 @@ void ath_tx_node_init(struct ath_softc * tid->baw_head = tid->baw_tail = 0; tid->sched = false; tid->active = false; + tid->clear_ps_filter = true; __skb_queue_head_init(&tid->buf_q); __skb_queue_head_init(&tid->retry_q); acno = TID_TO_WME_AC(tidno); - tid->ac = &an->ac[acno]; - } - - for (acno = 0, ac = &an->ac[acno]; - acno < IEEE80211_NUM_ACS; acno++, ac++) { - ac->sched = false; - ac->clear_ps_filter = true; - ac->txq = sc->tx.txq_map[acno]; - INIT_LIST_HEAD(&ac->tid_q); + tid->txq = sc->tx.txq_map[acno]; } } void ath_tx_node_cleanup(struct ath_softc *sc, struct ath_node *an) { - struct ath_atx_ac *ac; struct ath_atx_tid *tid; struct ath_txq *txq; int tidno; @@ -2926,8 +2882,7 @@ void ath_tx_node_cleanup(struct ath_soft for (tidno = 0, tid = &an->tid[tidno]; tidno < IEEE80211_NUM_TIDS; tidno++, tid++) { - ac = tid->ac; - txq = ac->txq; + txq = tid->txq; ath_txq_lock(sc, txq); @@ -2936,11 +2891,6 @@ void ath_tx_node_cleanup(struct ath_soft tid->sched = false; } - if (ac->sched) { - list_del(&ac->list); - tid->ac->sched = false; - } - ath_tid_drain(sc, txq, tid); tid->active = false;