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@@ -1,385 +0,0 @@
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-From: Felix Fietkau <[email protected]>
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-Date: Sat, 4 Apr 2015 18:39:06 +0200
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-Subject: [PATCH] ath9k: remove struct ath_atx_ac
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-
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-struct ath_atx_ac contains a list of active TIDs belonging to one WMM AC.
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-This patch changes the code to track active station TIDs in the txq directly.
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-
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-Signed-off-by: Felix Fietkau <[email protected]>
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----
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-
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---- a/drivers/net/wireless/ath/ath9k/ath9k.h
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-+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
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-@@ -173,14 +173,6 @@ struct ath_txq {
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- struct sk_buff_head complete_q;
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- };
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-
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--struct ath_atx_ac {
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-- struct ath_txq *txq;
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-- struct list_head list;
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-- struct list_head tid_q;
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-- bool clear_ps_filter;
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-- bool sched;
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--};
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--
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- struct ath_frame_info {
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- struct ath_buf *bf;
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- u16 framelen;
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-@@ -243,7 +235,7 @@ struct ath_atx_tid {
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- struct sk_buff_head buf_q;
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- struct sk_buff_head retry_q;
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- struct ath_node *an;
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-- struct ath_atx_ac *ac;
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-+ struct ath_txq *txq;
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- unsigned long tx_buf[BITS_TO_LONGS(ATH_TID_MAX_BUFS)];
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- u16 seq_start;
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- u16 seq_next;
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-@@ -255,6 +247,7 @@ struct ath_atx_tid {
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- s8 bar_index;
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- bool sched;
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- bool active;
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-+ bool clear_ps_filter;
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- };
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-
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- struct ath_node {
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-@@ -262,7 +255,6 @@ struct ath_node {
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- struct ieee80211_sta *sta; /* station struct we're part of */
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- struct ieee80211_vif *vif; /* interface with which we're associated */
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- struct ath_atx_tid tid[IEEE80211_NUM_TIDS];
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-- struct ath_atx_ac ac[IEEE80211_NUM_ACS];
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-
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- u16 maxampdu;
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- u8 mpdudensity;
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---- a/drivers/net/wireless/ath/ath9k/xmit.c
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-+++ b/drivers/net/wireless/ath/ath9k/xmit.c
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-@@ -106,7 +106,6 @@ void ath_txq_unlock_complete(struct ath_
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- static void ath_tx_queue_tid(struct ath_softc *sc, struct ath_txq *txq,
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- struct ath_atx_tid *tid)
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- {
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-- struct ath_atx_ac *ac = tid->ac;
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- struct list_head *list;
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- struct ath_vif *avp = (struct ath_vif *) tid->an->vif->drv_priv;
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- struct ath_chanctx *ctx = avp->chanctx;
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-@@ -118,15 +117,8 @@ static void ath_tx_queue_tid(struct ath_
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- return;
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-
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- tid->sched = true;
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-- list_add_tail(&tid->list, &ac->tid_q);
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--
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-- if (ac->sched)
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-- return;
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--
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-- ac->sched = true;
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--
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- list = &ctx->acq[TID_TO_WME_AC(tid->tidno)];
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-- list_add_tail(&ac->list, list);
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-+ list_add_tail(&tid->list, list);
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- }
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-
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- static struct ath_frame_info *get_frame_info(struct sk_buff *skb)
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-@@ -223,7 +215,7 @@ static struct sk_buff *ath_tid_dequeue(s
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- static void
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- ath_tx_tid_change_state(struct ath_softc *sc, struct ath_atx_tid *tid)
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- {
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-- struct ath_txq *txq = tid->ac->txq;
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-+ struct ath_txq *txq = tid->txq;
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- struct ieee80211_tx_info *tx_info;
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- struct sk_buff *skb, *tskb;
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- struct ath_buf *bf;
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-@@ -252,7 +244,7 @@ ath_tx_tid_change_state(struct ath_softc
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-
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- static void ath_tx_flush_tid(struct ath_softc *sc, struct ath_atx_tid *tid)
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- {
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-- struct ath_txq *txq = tid->ac->txq;
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-+ struct ath_txq *txq = tid->txq;
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- struct sk_buff *skb;
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- struct ath_buf *bf;
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- struct list_head bf_head;
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-@@ -659,7 +651,7 @@ static void ath_tx_complete_aggr(struct
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- ath_tx_queue_tid(sc, txq, tid);
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-
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- if (ts->ts_status & (ATH9K_TXERR_FILT | ATH9K_TXERR_XRETRY))
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-- tid->ac->clear_ps_filter = true;
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-+ tid->clear_ps_filter = true;
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- }
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- }
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-
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-@@ -749,7 +741,7 @@ static u32 ath_lookup_rate(struct ath_so
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- struct ieee80211_tx_rate *rates;
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- u32 max_4ms_framelen, frmlen;
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- u16 aggr_limit, bt_aggr_limit, legacy = 0;
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-- int q = tid->ac->txq->mac80211_qnum;
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-+ int q = tid->txq->mac80211_qnum;
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- int i;
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-
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- skb = bf->bf_mpdu;
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-@@ -1486,8 +1478,8 @@ static bool ath_tx_sched_aggr(struct ath
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- if (list_empty(&bf_q))
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- return false;
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-
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-- if (tid->ac->clear_ps_filter || tid->an->no_ps_filter) {
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-- tid->ac->clear_ps_filter = false;
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-+ if (tid->clear_ps_filter || tid->an->no_ps_filter) {
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-+ tid->clear_ps_filter = false;
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- tx_info->flags |= IEEE80211_TX_CTL_CLEAR_PS_FILT;
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- }
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-
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-@@ -1506,7 +1498,7 @@ int ath_tx_aggr_start(struct ath_softc *
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-
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- an = (struct ath_node *)sta->drv_priv;
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- txtid = ATH_AN_2_TID(an, tid);
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-- txq = txtid->ac->txq;
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-+ txq = txtid->txq;
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-
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- ath_txq_lock(sc, txq);
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-
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-@@ -1540,7 +1532,7 @@ void ath_tx_aggr_stop(struct ath_softc *
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- {
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- struct ath_node *an = (struct ath_node *)sta->drv_priv;
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- struct ath_atx_tid *txtid = ATH_AN_2_TID(an, tid);
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-- struct ath_txq *txq = txtid->ac->txq;
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-+ struct ath_txq *txq = txtid->txq;
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-
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- ath_txq_lock(sc, txq);
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- txtid->active = false;
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-@@ -1553,7 +1545,6 @@ void ath_tx_aggr_sleep(struct ieee80211_
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- struct ath_node *an)
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- {
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- struct ath_atx_tid *tid;
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-- struct ath_atx_ac *ac;
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- struct ath_txq *txq;
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- bool buffered;
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- int tidno;
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-@@ -1561,8 +1552,7 @@ void ath_tx_aggr_sleep(struct ieee80211_
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- for (tidno = 0, tid = &an->tid[tidno];
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- tidno < IEEE80211_NUM_TIDS; tidno++, tid++) {
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-
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-- ac = tid->ac;
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-- txq = ac->txq;
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-+ txq = tid->txq;
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-
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- ath_txq_lock(sc, txq);
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-
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-@@ -1576,11 +1566,6 @@ void ath_tx_aggr_sleep(struct ieee80211_
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- tid->sched = false;
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- list_del(&tid->list);
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-
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-- if (ac->sched) {
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-- ac->sched = false;
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-- list_del(&ac->list);
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-- }
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--
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- ath_txq_unlock(sc, txq);
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-
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- ieee80211_sta_set_buffered(sta, tidno, buffered);
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-@@ -1590,18 +1575,16 @@ void ath_tx_aggr_sleep(struct ieee80211_
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- void ath_tx_aggr_wakeup(struct ath_softc *sc, struct ath_node *an)
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- {
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- struct ath_atx_tid *tid;
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-- struct ath_atx_ac *ac;
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- struct ath_txq *txq;
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- int tidno;
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-
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- for (tidno = 0, tid = &an->tid[tidno];
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- tidno < IEEE80211_NUM_TIDS; tidno++, tid++) {
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-
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-- ac = tid->ac;
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-- txq = ac->txq;
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-+ txq = tid->txq;
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-
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- ath_txq_lock(sc, txq);
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-- ac->clear_ps_filter = true;
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-+ tid->clear_ps_filter = true;
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-
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- if (ath_tid_has_buffered(tid)) {
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- ath_tx_queue_tid(sc, txq, tid);
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-@@ -1621,7 +1604,7 @@ void ath_tx_aggr_resume(struct ath_softc
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-
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- an = (struct ath_node *)sta->drv_priv;
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- tid = ATH_AN_2_TID(an, tidno);
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-- txq = tid->ac->txq;
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-+ txq = tid->txq;
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-
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- ath_txq_lock(sc, txq);
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-
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-@@ -1660,7 +1643,7 @@ void ath9k_release_buffered_frames(struc
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-
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- tid = ATH_AN_2_TID(an, i);
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-
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-- ath_txq_lock(sc, tid->ac->txq);
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-+ ath_txq_lock(sc, tid->txq);
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- while (nframes > 0) {
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- bf = ath_tx_get_tid_subframe(sc, sc->tx.uapsdq, tid, &tid_q);
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- if (!bf)
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-@@ -1684,7 +1667,7 @@ void ath9k_release_buffered_frames(struc
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- if (an->sta && !ath_tid_has_buffered(tid))
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- ieee80211_sta_set_buffered(an->sta, i, false);
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- }
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-- ath_txq_unlock_complete(sc, tid->ac->txq);
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-+ ath_txq_unlock_complete(sc, tid->txq);
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- }
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-
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- if (list_empty(&bf_q))
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-@@ -1933,9 +1916,8 @@ void ath_tx_cleanupq(struct ath_softc *s
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- void ath_txq_schedule(struct ath_softc *sc, struct ath_txq *txq)
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- {
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- struct ath_common *common = ath9k_hw_common(sc->sc_ah);
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-- struct ath_atx_ac *ac, *last_ac;
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- struct ath_atx_tid *tid, *last_tid;
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-- struct list_head *ac_list;
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-+ struct list_head *tid_list;
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- bool sent = false;
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-
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- if (txq->mac80211_qnum < 0)
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-@@ -1945,63 +1927,46 @@ void ath_txq_schedule(struct ath_softc *
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- return;
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-
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- spin_lock_bh(&sc->chan_lock);
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-- ac_list = &sc->cur_chan->acq[txq->mac80211_qnum];
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-+ tid_list = &sc->cur_chan->acq[txq->mac80211_qnum];
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-
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-- if (list_empty(ac_list)) {
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-+ if (list_empty(tid_list)) {
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- spin_unlock_bh(&sc->chan_lock);
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- return;
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- }
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-
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- rcu_read_lock();
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-
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-- last_ac = list_entry(ac_list->prev, struct ath_atx_ac, list);
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-- while (!list_empty(ac_list)) {
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-+ last_tid = list_entry(tid_list->prev, struct ath_atx_tid, list);
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-+ while (!list_empty(tid_list)) {
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- bool stop = false;
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-
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- if (sc->cur_chan->stopped)
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- break;
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-
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-- ac = list_first_entry(ac_list, struct ath_atx_ac, list);
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-- last_tid = list_entry(ac->tid_q.prev, struct ath_atx_tid, list);
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-- list_del(&ac->list);
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-- ac->sched = false;
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--
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-- while (!list_empty(&ac->tid_q)) {
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--
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-- tid = list_first_entry(&ac->tid_q, struct ath_atx_tid,
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-- list);
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-- list_del(&tid->list);
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-- tid->sched = false;
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--
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-- if (ath_tx_sched_aggr(sc, txq, tid, &stop))
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-- sent = true;
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--
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-- /*
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-- * add tid to round-robin queue if more frames
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-- * are pending for the tid
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-- */
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-- if (ath_tid_has_buffered(tid))
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-- ath_tx_queue_tid(sc, txq, tid);
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-+ tid = list_first_entry(tid_list, struct ath_atx_tid, list);
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-+ list_del(&tid->list);
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-+ tid->sched = false;
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-
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-- if (stop || tid == last_tid)
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-- break;
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-- }
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-+ if (ath_tx_sched_aggr(sc, txq, tid, &stop))
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-+ sent = true;
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-
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-- if (!list_empty(&ac->tid_q) && !ac->sched) {
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-- ac->sched = true;
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-- list_add_tail(&ac->list, ac_list);
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-- }
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-+ /*
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-+ * add tid to round-robin queue if more frames
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-+ * are pending for the tid
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-+ */
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-+ if (ath_tid_has_buffered(tid))
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-+ ath_tx_queue_tid(sc, txq, tid);
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-
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- if (stop)
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- break;
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-
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-- if (ac == last_ac) {
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-+ if (tid == last_tid) {
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- if (!sent)
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- break;
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-
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- sent = false;
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-- last_ac = list_entry(ac_list->prev,
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-- struct ath_atx_ac, list);
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-+ last_tid = list_entry(tid_list->prev,
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-+ struct ath_atx_tid, list);
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- }
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- }
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-
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-@@ -2391,10 +2356,10 @@ int ath_tx_start(struct ieee80211_hw *hw
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- txq = sc->tx.uapsdq;
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- ath_txq_lock(sc, txq);
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- } else if (txctl->an && queue) {
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-- WARN_ON(tid->ac->txq != txctl->txq);
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-+ WARN_ON(tid->txq != txctl->txq);
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-
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- if (info->flags & IEEE80211_TX_CTL_CLEAR_PS_FILT)
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-- tid->ac->clear_ps_filter = true;
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-+ tid->clear_ps_filter = true;
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-
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- /*
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- * Add this frame to software queue for scheduling later
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-@@ -2888,7 +2853,6 @@ int ath_tx_init(struct ath_softc *sc, in
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- void ath_tx_node_init(struct ath_softc *sc, struct ath_node *an)
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- {
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- struct ath_atx_tid *tid;
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-- struct ath_atx_ac *ac;
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- int tidno, acno;
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-
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- for (tidno = 0, tid = &an->tid[tidno];
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-@@ -2901,24 +2865,16 @@ void ath_tx_node_init(struct ath_softc *
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- tid->baw_head = tid->baw_tail = 0;
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- tid->sched = false;
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- tid->active = false;
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-+ tid->clear_ps_filter = true;
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- __skb_queue_head_init(&tid->buf_q);
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- __skb_queue_head_init(&tid->retry_q);
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- acno = TID_TO_WME_AC(tidno);
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-- tid->ac = &an->ac[acno];
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-- }
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--
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-- for (acno = 0, ac = &an->ac[acno];
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-- acno < IEEE80211_NUM_ACS; acno++, ac++) {
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-- ac->sched = false;
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-- ac->clear_ps_filter = true;
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-- ac->txq = sc->tx.txq_map[acno];
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-- INIT_LIST_HEAD(&ac->tid_q);
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-+ tid->txq = sc->tx.txq_map[acno];
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- }
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- }
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-
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- void ath_tx_node_cleanup(struct ath_softc *sc, struct ath_node *an)
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- {
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-- struct ath_atx_ac *ac;
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- struct ath_atx_tid *tid;
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- struct ath_txq *txq;
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- int tidno;
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-@@ -2926,8 +2882,7 @@ void ath_tx_node_cleanup(struct ath_soft
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- for (tidno = 0, tid = &an->tid[tidno];
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- tidno < IEEE80211_NUM_TIDS; tidno++, tid++) {
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-
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-- ac = tid->ac;
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-- txq = ac->txq;
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-+ txq = tid->txq;
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|
-
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- ath_txq_lock(sc, txq);
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|
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-
|
|
|
-@@ -2936,11 +2891,6 @@ void ath_tx_node_cleanup(struct ath_soft
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|
- tid->sched = false;
|
|
|
- }
|
|
|
-
|
|
|
-- if (ac->sched) {
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-- list_del(&ac->list);
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|
|
-- tid->ac->sched = false;
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|
|
-- }
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|
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--
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|
|
- ath_tid_drain(sc, txq, tid);
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|
- tid->active = false;
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|
-
|