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authorJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-11 10:41:07 +0300
committerJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-13 08:17:18 +0300
commite09b41010ba33a20a87472ee821fa407a5b8da36 (patch)
treed10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/drivers/net/wireless/ath/ath9k/xmit.c
parentf93b97fd65072de626c074dbe099a1fff05ce060 (diff)
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page. During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/drivers/net/wireless/ath/ath9k/xmit.c')
-rw-r--r--kernel/drivers/net/wireless/ath/ath9k/xmit.c156
1 files changed, 51 insertions, 105 deletions
diff --git a/kernel/drivers/net/wireless/ath/ath9k/xmit.c b/kernel/drivers/net/wireless/ath/ath9k/xmit.c
index 3ad79bb4f..3e3dac3d7 100644
--- a/kernel/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/kernel/drivers/net/wireless/ath/ath9k/xmit.c
@@ -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,
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;
@@ -114,19 +113,9 @@ static void ath_tx_queue_tid(struct ath_softc *sc, struct ath_txq *txq,
if (!ctx)
return;
- if (tid->sched)
- 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);
+ if (list_empty(&tid->list))
+ list_add_tail(&tid->list, list);
}
static struct ath_frame_info *get_frame_info(struct sk_buff *skb)
@@ -208,7 +197,7 @@ static struct sk_buff *ath_tid_dequeue(struct ath_atx_tid *tid)
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;
@@ -237,7 +226,7 @@ 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)
{
- 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;
@@ -644,7 +633,7 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq,
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;
}
}
@@ -734,7 +723,7 @@ static u32 ath_lookup_rate(struct ath_softc *sc, struct ath_buf *bf,
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;
@@ -1471,8 +1460,8 @@ static bool ath_tx_sched_aggr(struct ath_softc *sc, struct ath_txq *txq,
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;
}
@@ -1491,7 +1480,7 @@ int ath_tx_aggr_start(struct ath_softc *sc, struct ieee80211_sta *sta,
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);
@@ -1525,7 +1514,7 @@ 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_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;
@@ -1538,7 +1527,6 @@ void ath_tx_aggr_sleep(struct ieee80211_sta *sta, struct ath_softc *sc,
struct ath_node *an)
{
struct ath_atx_tid *tid;
- struct ath_atx_ac *ac;
struct ath_txq *txq;
bool buffered;
int tidno;
@@ -1546,25 +1534,18 @@ void ath_tx_aggr_sleep(struct ieee80211_sta *sta, struct ath_softc *sc,
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);
- if (!tid->sched) {
+ if (list_empty(&tid->list)) {
ath_txq_unlock(sc, txq);
continue;
}
buffered = ath_tid_has_buffered(tid);
- tid->sched = false;
- list_del(&tid->list);
-
- if (ac->sched) {
- ac->sched = false;
- list_del(&ac->list);
- }
+ list_del_init(&tid->list);
ath_txq_unlock(sc, txq);
@@ -1575,18 +1556,16 @@ 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)
{
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);
@@ -1606,7 +1585,7 @@ void ath_tx_aggr_resume(struct ath_softc *sc, struct ieee80211_sta *sta,
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);
@@ -1645,7 +1624,7 @@ void ath9k_release_buffered_frames(struct ieee80211_hw *hw,
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)
@@ -1669,7 +1648,7 @@ void ath9k_release_buffered_frames(struct ieee80211_hw *hw,
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))
@@ -1883,8 +1862,11 @@ bool ath_drain_all_txq(struct ath_softc *sc)
npend |= BIT(i);
}
- if (npend)
- ath_err(common, "Failed to stop TX DMA, queues=0x%03x!\n", npend);
+ if (npend) {
+ RESET_STAT_INC(sc, RESET_TX_DMA_ERROR);
+ ath_dbg(common, RESET,
+ "Failed to stop TX DMA, queues=0x%03x!\n", npend);
+ }
for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) {
if (!ATH_TXQ_SETUP(sc, i))
@@ -1915,9 +1897,8 @@ void ath_tx_cleanupq(struct ath_softc *sc, struct ath_txq *txq)
void ath_txq_schedule(struct ath_softc *sc, struct ath_txq *txq)
{
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)
@@ -1927,63 +1908,45 @@ void ath_txq_schedule(struct ath_softc *sc, struct ath_txq *txq)
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_init(&tid->list);
- 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);
}
}
@@ -2373,10 +2336,10 @@ int ath_tx_start(struct ieee80211_hw *hw, struct sk_buff *skb,
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
@@ -2470,8 +2433,8 @@ void ath_tx_cabq(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
bf = list_first_entry(&bf_q, struct ath_buf, list);
hdr = (struct ieee80211_hdr *) bf->bf_mpdu->data;
- if (hdr->frame_control & IEEE80211_FCTL_MOREDATA) {
- hdr->frame_control &= ~IEEE80211_FCTL_MOREDATA;
+ if (hdr->frame_control & cpu_to_le16(IEEE80211_FCTL_MOREDATA)) {
+ hdr->frame_control &= ~cpu_to_le16(IEEE80211_FCTL_MOREDATA);
dma_sync_single_for_device(sc->dev, bf->bf_buf_addr,
sizeof(*hdr), DMA_TO_DEVICE);
}
@@ -2870,7 +2833,6 @@ int ath_tx_init(struct ath_softc *sc, int nbufs)
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];
@@ -2881,26 +2843,18 @@ void ath_tx_node_init(struct ath_softc *sc, struct ath_node *an)
tid->seq_start = tid->seq_next = 0;
tid->baw_size = WME_MAX_BA;
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);
+ INIT_LIST_HEAD(&tid->list);
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;
@@ -2908,20 +2862,12 @@ void ath_tx_node_cleanup(struct ath_softc *sc, struct ath_node *an)
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);
- if (tid->sched) {
- list_del(&tid->list);
- tid->sched = false;
- }
-
- if (ac->sched) {
- list_del(&ac->list);
- tid->ac->sched = false;
- }
+ if (!list_empty(&tid->list))
+ list_del_init(&tid->list);
ath_tid_drain(sc, txq, tid);
tid->active = false;