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ath9k: remove struct ath_atx_ac

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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 <nbd@openwrt.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Felix Fietkau 2015-07-22 13:06:13 +02:00 • committed by Kalle Valo
parent f419c5f1d8
commit 592fa228f2
2 changed files with 41 additions and 99 deletions
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12
drivers/net/wireless/ath/ath9k/ath9k.h
View file

@ -172,14 +172,6 @@ struct ath_txq {
struct sk_buff_head complete_q; 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_frame_info {
struct ath_buf *bf; struct ath_buf *bf;
u16 framelen; u16 framelen;
@ -242,7 +234,7 @@ struct ath_atx_tid {
struct sk_buff_head buf_q; struct sk_buff_head buf_q;
struct sk_buff_head retry_q; struct sk_buff_head retry_q;
struct ath_node *an; struct ath_node *an;
struct ath_atx_ac *ac; struct ath_txq *txq;
unsigned long tx_buf[BITS_TO_LONGS(ATH_TID_MAX_BUFS)]; unsigned long tx_buf[BITS_TO_LONGS(ATH_TID_MAX_BUFS)];
u16 seq_start; u16 seq_start;
u16 seq_next; u16 seq_next;
@ -254,6 +246,7 @@ struct ath_atx_tid {
s8 bar_index; s8 bar_index;
bool sched; bool sched;
bool active; bool active;
bool clear_ps_filter;
}; };
struct ath_node { struct ath_node {
@ -261,7 +254,6 @@ struct ath_node {
struct ieee80211_sta *sta; /* station struct we're part of */ struct ieee80211_sta *sta; /* station struct we're part of */
struct ieee80211_vif *vif; /* interface with which we're associated */ struct ieee80211_vif *vif; /* interface with which we're associated */
struct ath_atx_tid tid[IEEE80211_NUM_TIDS]; struct ath_atx_tid tid[IEEE80211_NUM_TIDS];
struct ath_atx_ac ac[IEEE80211_NUM_ACS];
u16 maxampdu; u16 maxampdu;
u8 mpdudensity; u8 mpdudensity;

128
drivers/net/wireless/ath/ath9k/xmit.c
View file

@ -106,7 +106,6 @@ void ath_txq_unlock_complete(struct ath_softc *sc, struct ath_txq *txq)
static void ath_tx_queue_tid(struct ath_softc *sc, struct ath_txq *txq, static void ath_tx_queue_tid(struct ath_softc *sc, struct ath_txq *txq,
struct ath_atx_tid *tid) struct ath_atx_tid *tid)
{ {
struct ath_atx_ac *ac = tid->ac;
struct list_head *list; struct list_head *list;
struct ath_vif *avp = (struct ath_vif *) tid->an->vif->drv_priv; struct ath_vif *avp = (struct ath_vif *) tid->an->vif->drv_priv;
struct ath_chanctx *ctx = avp->chanctx; struct ath_chanctx *ctx = avp->chanctx;
@ -118,15 +117,8 @@ static void ath_tx_queue_tid(struct ath_softc *sc, struct ath_txq *txq,
return; return;
tid->sched = true; 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 = &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) static struct ath_frame_info *get_frame_info(struct sk_buff *skb)
@ -208,7 +200,7 @@ static struct sk_buff *ath_tid_dequeue(struct ath_atx_tid *tid)
static void static void
ath_tx_tid_change_state(struct ath_softc *sc, struct ath_atx_tid *tid) 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 ieee80211_tx_info *tx_info;
struct sk_buff *skb, *tskb; struct sk_buff *skb, *tskb;
struct ath_buf *bf; struct ath_buf *bf;
@ -237,7 +229,7 @@ ath_tx_tid_change_state(struct ath_softc *sc, struct ath_atx_tid *tid)
static void ath_tx_flush_tid(struct ath_softc *sc, struct ath_atx_tid *tid) 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 sk_buff *skb;
struct ath_buf *bf; struct ath_buf *bf;
struct list_head bf_head; struct list_head bf_head;
@ -644,7 +636,7 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq,
ath_tx_queue_tid(sc, txq, tid); ath_tx_queue_tid(sc, txq, tid);
if (ts->ts_status & (ATH9K_TXERR_FILT | ATH9K_TXERR_XRETRY)) if (ts->ts_status & (ATH9K_TXERR_FILT | ATH9K_TXERR_XRETRY))
tid->ac->clear_ps_filter = true; tid->clear_ps_filter = true;
} }
} }
@ -734,7 +726,7 @@ static u32 ath_lookup_rate(struct ath_softc *sc, struct ath_buf *bf,
struct ieee80211_tx_rate *rates; struct ieee80211_tx_rate *rates;
u32 max_4ms_framelen, frmlen; u32 max_4ms_framelen, frmlen;
u16 aggr_limit, bt_aggr_limit, legacy = 0; u16 aggr_limit, bt_aggr_limit, legacy = 0;
int q = tid->ac->txq->mac80211_qnum; int q = tid->txq->mac80211_qnum;
int i; int i;
skb = bf->bf_mpdu; skb = bf->bf_mpdu;
@ -1471,8 +1463,8 @@ static bool ath_tx_sched_aggr(struct ath_softc *sc, struct ath_txq *txq,
if (list_empty(&bf_q)) if (list_empty(&bf_q))
return false; return false;
if (tid->ac->clear_ps_filter || tid->an->no_ps_filter) { if (tid->clear_ps_filter || tid->an->no_ps_filter) {
tid->ac->clear_ps_filter = false; tid->clear_ps_filter = false;
tx_info->flags |= IEEE80211_TX_CTL_CLEAR_PS_FILT; tx_info->flags |= IEEE80211_TX_CTL_CLEAR_PS_FILT;
} }
@ -1491,7 +1483,7 @@ int ath_tx_aggr_start(struct ath_softc *sc, struct ieee80211_sta *sta,
an = (struct ath_node *)sta->drv_priv; an = (struct ath_node *)sta->drv_priv;
txtid = ATH_AN_2_TID(an, tid); txtid = ATH_AN_2_TID(an, tid);
txq = txtid->ac->txq; txq = txtid->txq;
ath_txq_lock(sc, txq); ath_txq_lock(sc, txq);
@ -1525,7 +1517,7 @@ void ath_tx_aggr_stop(struct ath_softc *sc, struct ieee80211_sta *sta, u16 tid)
{ {
struct ath_node *an = (struct ath_node *)sta->drv_priv; struct ath_node *an = (struct ath_node *)sta->drv_priv;
struct ath_atx_tid *txtid = ATH_AN_2_TID(an, tid); 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); ath_txq_lock(sc, txq);
txtid->active = false; txtid->active = false;
@ -1538,7 +1530,6 @@ void ath_tx_aggr_sleep(struct ieee80211_sta *sta, struct ath_softc *sc,
struct ath_node *an) struct ath_node *an)
{ {
struct ath_atx_tid *tid; struct ath_atx_tid *tid;
struct ath_atx_ac *ac;
struct ath_txq *txq; struct ath_txq *txq;
bool buffered; bool buffered;
int tidno; int tidno;
@ -1546,8 +1537,7 @@ void ath_tx_aggr_sleep(struct ieee80211_sta *sta, struct ath_softc *sc,
for (tidno = 0, tid = &an->tid[tidno]; for (tidno = 0, tid = &an->tid[tidno];
tidno < IEEE80211_NUM_TIDS; tidno++, tid++) { tidno < IEEE80211_NUM_TIDS; tidno++, tid++) {
ac = tid->ac; txq = tid->txq;
txq = ac->txq;
ath_txq_lock(sc, txq); ath_txq_lock(sc, txq);
@ -1561,11 +1551,6 @@ void ath_tx_aggr_sleep(struct ieee80211_sta *sta, struct ath_softc *sc,
tid->sched = false; tid->sched = false;
list_del(&tid->list); list_del(&tid->list);
if (ac->sched) {
ac->sched = false;
list_del(&ac->list);
}
ath_txq_unlock(sc, txq); ath_txq_unlock(sc, txq);
ieee80211_sta_set_buffered(sta, tidno, buffered); ieee80211_sta_set_buffered(sta, tidno, buffered);
@ -1575,18 +1560,16 @@ void ath_tx_aggr_sleep(struct ieee80211_sta *sta, struct ath_softc *sc,
void ath_tx_aggr_wakeup(struct ath_softc *sc, struct ath_node *an) void ath_tx_aggr_wakeup(struct ath_softc *sc, struct ath_node *an)
{ {
struct ath_atx_tid *tid; struct ath_atx_tid *tid;
struct ath_atx_ac *ac;
struct ath_txq *txq; struct ath_txq *txq;
int tidno; int tidno;
for (tidno = 0, tid = &an->tid[tidno]; for (tidno = 0, tid = &an->tid[tidno];
tidno < IEEE80211_NUM_TIDS; tidno++, tid++) { tidno < IEEE80211_NUM_TIDS; tidno++, tid++) {
ac = tid->ac; txq = tid->txq;
txq = ac->txq;
ath_txq_lock(sc, txq); ath_txq_lock(sc, txq);
ac->clear_ps_filter = true; tid->clear_ps_filter = true;
if (ath_tid_has_buffered(tid)) { if (ath_tid_has_buffered(tid)) {
ath_tx_queue_tid(sc, txq, tid); ath_tx_queue_tid(sc, txq, tid);
@ -1606,7 +1589,7 @@ void ath_tx_aggr_resume(struct ath_softc *sc, struct ieee80211_sta *sta,
an = (struct ath_node *)sta->drv_priv; an = (struct ath_node *)sta->drv_priv;
tid = ATH_AN_2_TID(an, tidno); tid = ATH_AN_2_TID(an, tidno);
txq = tid->ac->txq; txq = tid->txq;
ath_txq_lock(sc, txq); ath_txq_lock(sc, txq);
@ -1645,7 +1628,7 @@ void ath9k_release_buffered_frames(struct ieee80211_hw *hw,
tid = ATH_AN_2_TID(an, i); tid = ATH_AN_2_TID(an, i);
ath_txq_lock(sc, tid->ac->txq); ath_txq_lock(sc, tid->txq);
while (nframes > 0) { while (nframes > 0) {
bf = ath_tx_get_tid_subframe(sc, sc->tx.uapsdq, tid, &tid_q); bf = ath_tx_get_tid_subframe(sc, sc->tx.uapsdq, tid, &tid_q);
if (!bf) if (!bf)
@ -1669,7 +1652,7 @@ void ath9k_release_buffered_frames(struct ieee80211_hw *hw,
if (an->sta && !ath_tid_has_buffered(tid)) if (an->sta && !ath_tid_has_buffered(tid))
ieee80211_sta_set_buffered(an->sta, i, false); 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)) if (list_empty(&bf_q))
@ -1918,9 +1901,8 @@ void ath_tx_cleanupq(struct ath_softc *sc, struct ath_txq *txq)
void ath_txq_schedule(struct ath_softc *sc, struct ath_txq *txq) void ath_txq_schedule(struct ath_softc *sc, struct ath_txq *txq)
{ {
struct ath_common *common = ath9k_hw_common(sc->sc_ah); 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 ath_atx_tid *tid, *last_tid;
struct list_head *ac_list; struct list_head *tid_list;
bool sent = false; bool sent = false;
if (txq->mac80211_qnum < 0) if (txq->mac80211_qnum < 0)
@ -1930,63 +1912,46 @@ void ath_txq_schedule(struct ath_softc *sc, struct ath_txq *txq)
return; return;
spin_lock_bh(&sc->chan_lock); 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); spin_unlock_bh(&sc->chan_lock);
return; return;
} }
rcu_read_lock(); rcu_read_lock();
last_ac = list_entry(ac_list->prev, struct ath_atx_ac, list); last_tid = list_entry(tid_list->prev, struct ath_atx_tid, list);
while (!list_empty(ac_list)) { while (!list_empty(tid_list)) {
bool stop = false; bool stop = false;
if (sc->cur_chan->stopped) if (sc->cur_chan->stopped)
break; break;
ac = list_first_entry(ac_list, struct ath_atx_ac, list); tid = list_first_entry(tid_list, struct ath_atx_tid, list);
last_tid = list_entry(ac->tid_q.prev, struct ath_atx_tid, list); list_del(&tid->list);
list_del(&ac->list); tid->sched = false;
ac->sched = false;
while (!list_empty(&ac->tid_q)) { if (ath_tx_sched_aggr(sc, txq, tid, &stop))
sent = true;
tid = list_first_entry(&ac->tid_q, struct ath_atx_tid, /*
list); * add tid to round-robin queue if more frames
list_del(&tid->list); * are pending for the tid
tid->sched = false; */
if (ath_tid_has_buffered(tid))
if (ath_tx_sched_aggr(sc, txq, tid, &stop)) ath_tx_queue_tid(sc, txq, tid);
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);
if (stop || tid == last_tid)
break;
}
if (!list_empty(&ac->tid_q) && !ac->sched) {
ac->sched = true;
list_add_tail(&ac->list, ac_list);
}
if (stop) if (stop)
break; break;
if (ac == last_ac) { if (tid == last_tid) {
if (!sent) if (!sent)
break; break;
sent = false; sent = false;
last_ac = list_entry(ac_list->prev, last_tid = list_entry(tid_list->prev,
struct ath_atx_ac, list); struct ath_atx_tid, list);
} }
} }
@ -2376,10 +2341,10 @@ int ath_tx_start(struct ieee80211_hw *hw, struct sk_buff *skb,
txq = sc->tx.uapsdq; txq = sc->tx.uapsdq;
ath_txq_lock(sc, txq); ath_txq_lock(sc, txq);
} else if (txctl->an && queue) { } 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) 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 * Add this frame to software queue for scheduling later
@ -2873,7 +2838,6 @@ int ath_tx_init(struct ath_softc *sc, int nbufs)
void ath_tx_node_init(struct ath_softc *sc, struct ath_node *an) void ath_tx_node_init(struct ath_softc *sc, struct ath_node *an)
{ {
struct ath_atx_tid *tid; struct ath_atx_tid *tid;
struct ath_atx_ac *ac;
int tidno, acno; int tidno, acno;
for (tidno = 0, tid = &an->tid[tidno]; for (tidno = 0, tid = &an->tid[tidno];
@ -2886,24 +2850,16 @@ void ath_tx_node_init(struct ath_softc *sc, struct ath_node *an)
tid->baw_head = tid->baw_tail = 0; tid->baw_head = tid->baw_tail = 0;
tid->sched = false; tid->sched = false;
tid->active = false; tid->active = false;
tid->clear_ps_filter = true;
__skb_queue_head_init(&tid->buf_q); __skb_queue_head_init(&tid->buf_q);
__skb_queue_head_init(&tid->retry_q); __skb_queue_head_init(&tid->retry_q);
acno = TID_TO_WME_AC(tidno); acno = TID_TO_WME_AC(tidno);
tid->ac = &an->ac[acno]; tid->txq = sc->tx.txq_map[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);
} }
} }
void ath_tx_node_cleanup(struct ath_softc *sc, struct ath_node *an) 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_atx_tid *tid;
struct ath_txq *txq; struct ath_txq *txq;
int tidno; int tidno;
@ -2911,8 +2867,7 @@ void ath_tx_node_cleanup(struct ath_softc *sc, struct ath_node *an)
for (tidno = 0, tid = &an->tid[tidno]; for (tidno = 0, tid = &an->tid[tidno];
tidno < IEEE80211_NUM_TIDS; tidno++, tid++) { tidno < IEEE80211_NUM_TIDS; tidno++, tid++) {
ac = tid->ac; txq = tid->txq;
txq = ac->txq;
ath_txq_lock(sc, txq); ath_txq_lock(sc, txq);
@ -2921,11 +2876,6 @@ void ath_tx_node_cleanup(struct ath_softc *sc, struct ath_node *an)
tid->sched = false; tid->sched = false;
} }
if (ac->sched) {
list_del(&ac->list);
tid->ac->sched = false;
}
ath_tid_drain(sc, txq, tid); ath_tid_drain(sc, txq, tid);
tid->active = false; tid->active = false;