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path: root/drivers/net/wireless/ath/ath9k/xmit.c
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Diffstat (limited to 'drivers/net/wireless/ath/ath9k/xmit.c')
-rw-r--r--drivers/net/wireless/ath/ath9k/xmit.c251
1 files changed, 128 insertions, 123 deletions
diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c
index 859aa4ab0769..501b72821b4d 100644
--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -328,6 +328,7 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq,
u32 ba[WME_BA_BMP_SIZE >> 5];
int isaggr, txfail, txpending, sendbar = 0, needreset = 0, nbad = 0;
bool rc_update = true;
+ struct ieee80211_tx_rate rates[4];
skb = bf->bf_mpdu;
hdr = (struct ieee80211_hdr *)skb->data;
@@ -335,18 +336,44 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq,
tx_info = IEEE80211_SKB_CB(skb);
hw = bf->aphy->hw;
+ memcpy(rates, tx_info->control.rates, sizeof(rates));
+
rcu_read_lock();
/* XXX: use ieee80211_find_sta! */
sta = ieee80211_find_sta_by_hw(hw, hdr->addr1);
if (!sta) {
rcu_read_unlock();
+
+ INIT_LIST_HEAD(&bf_head);
+ while (bf) {
+ bf_next = bf->bf_next;
+
+ bf->bf_state.bf_type |= BUF_XRETRY;
+ if ((sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) ||
+ !bf->bf_stale || bf_next != NULL)
+ list_move_tail(&bf->list, &bf_head);
+
+ ath_tx_rc_status(bf, ts, 0, 0, false);
+ ath_tx_complete_buf(sc, bf, txq, &bf_head, ts,
+ 0, 0);
+
+ bf = bf_next;
+ }
return;
}
an = (struct ath_node *)sta->drv_priv;
tid = ATH_AN_2_TID(an, bf->bf_tidno);
+ /*
+ * The hardware occasionally sends a tx status for the wrong TID.
+ * In this case, the BA status cannot be considered valid and all
+ * subframes need to be retransmitted
+ */
+ if (bf->bf_tidno != ts->tid)
+ txok = false;
+
isaggr = bf_isaggr(bf);
memset(ba, 0, WME_BA_BMP_SIZE >> 3);
@@ -375,6 +402,9 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq,
txfail = txpending = 0;
bf_next = bf->bf_next;
+ skb = bf->bf_mpdu;
+ tx_info = IEEE80211_SKB_CB(skb);
+
if (ATH_BA_ISSET(ba, ATH_BA_INDEX(seq_st, bf->bf_seqno))) {
/* transmit completion, subframe is
* acked by block ack */
@@ -428,6 +458,7 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq,
spin_unlock_bh(&txq->axq_lock);
if (rc_update && (acked_cnt == 1 || txfail_cnt == 1)) {
+ memcpy(tx_info->control.rates, rates, sizeof(rates));
ath_tx_rc_status(bf, ts, nbad, txok, true);
rc_update = false;
} else {
@@ -487,6 +518,14 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq,
bf = bf_next;
}
+ /* prepend un-acked frames to the beginning of the pending frame queue */
+ if (!list_empty(&bf_pending)) {
+ spin_lock_bh(&txq->axq_lock);
+ list_splice(&bf_pending, &tid->buf_q);
+ ath_tx_queue_tid(txq, tid);
+ spin_unlock_bh(&txq->axq_lock);
+ }
+
if (tid->state & AGGR_CLEANUP) {
if (tid->baw_head == tid->baw_tail) {
tid->state &= ~AGGR_ADDBA_COMPLETE;
@@ -499,14 +538,6 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq,
return;
}
- /* prepend un-acked frames to the beginning of the pending frame queue */
- if (!list_empty(&bf_pending)) {
- spin_lock_bh(&txq->axq_lock);
- list_splice(&bf_pending, &tid->buf_q);
- ath_tx_queue_tid(txq, tid);
- spin_unlock_bh(&txq->axq_lock);
- }
-
rcu_read_unlock();
if (needreset)
@@ -941,6 +972,7 @@ struct ath_txq *ath_txq_setup(struct ath_softc *sc, int qtype, int subtype)
if (!ATH_TXQ_SETUP(sc, qnum)) {
struct ath_txq *txq = &sc->tx.txq[qnum];
+ txq->axq_class = subtype;
txq->axq_qnum = qnum;
txq->axq_link = NULL;
INIT_LIST_HEAD(&txq->axq_q);
@@ -958,58 +990,6 @@ struct ath_txq *ath_txq_setup(struct ath_softc *sc, int qtype, int subtype)
return &sc->tx.txq[qnum];
}
-int ath_tx_get_qnum(struct ath_softc *sc, int qtype, int haltype)
-{
- int qnum;
-
- switch (qtype) {
- case ATH9K_TX_QUEUE_DATA:
- if (haltype >= ARRAY_SIZE(sc->tx.hwq_map)) {
- ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_FATAL,
- "HAL AC %u out of range, max %zu!\n",
- haltype, ARRAY_SIZE(sc->tx.hwq_map));
- return -1;
- }
- qnum = sc->tx.hwq_map[haltype];
- break;
- case ATH9K_TX_QUEUE_BEACON:
- qnum = sc->beacon.beaconq;
- break;
- case ATH9K_TX_QUEUE_CAB:
- qnum = sc->beacon.cabq->axq_qnum;
- break;
- default:
- qnum = -1;
- }
- return qnum;
-}
-
-struct ath_txq *ath_test_get_txq(struct ath_softc *sc, struct sk_buff *skb)
-{
- struct ath_txq *txq = NULL;
- u16 skb_queue = skb_get_queue_mapping(skb);
- int qnum;
-
- qnum = ath_get_hal_qnum(skb_queue, sc);
- txq = &sc->tx.txq[qnum];
-
- spin_lock_bh(&txq->axq_lock);
-
- if (txq->axq_depth >= (ATH_TXBUF - 20)) {
- ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_XMIT,
- "TX queue: %d is full, depth: %d\n",
- qnum, txq->axq_depth);
- ath_mac80211_stop_queue(sc, skb_queue);
- txq->stopped = 1;
- spin_unlock_bh(&txq->axq_lock);
- return NULL;
- }
-
- spin_unlock_bh(&txq->axq_lock);
-
- return txq;
-}
-
int ath_txq_update(struct ath_softc *sc, int qnum,
struct ath9k_tx_queue_info *qinfo)
{
@@ -1688,12 +1668,15 @@ static int ath_tx_setup_buffer(struct ieee80211_hw *hw, struct ath_buf *bf,
bf->bf_frmlen -= padsize;
}
- if (conf_is_ht(&hw->conf)) {
+ if (!txctl->paprd && conf_is_ht(&hw->conf)) {
bf->bf_state.bf_type |= BUF_HT;
if (tx_info->flags & IEEE80211_TX_CTL_LDPC)
use_ldpc = true;
}
+ bf->bf_state.bfs_paprd = txctl->paprd;
+ if (txctl->paprd)
+ bf->bf_state.bfs_paprd_timestamp = jiffies;
bf->bf_flags = setup_tx_flags(skb, use_ldpc);
bf->bf_keytype = get_hw_crypto_keytype(skb);
@@ -1768,6 +1751,9 @@ static void ath_tx_start_dma(struct ath_softc *sc, struct ath_buf *bf,
bf->bf_buf_addr,
txctl->txq->axq_qnum);
+ if (bf->bf_state.bfs_paprd)
+ ar9003_hw_set_paprd_txdesc(ah, ds, bf->bf_state.bfs_paprd);
+
spin_lock_bh(&txctl->txq->axq_lock);
if (bf_isht(bf) && (sc->sc_flags & SC_OP_TXAGGR) &&
@@ -1809,8 +1795,9 @@ int ath_tx_start(struct ieee80211_hw *hw, struct sk_buff *skb,
struct ath_wiphy *aphy = hw->priv;
struct ath_softc *sc = aphy->sc;
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
+ struct ath_txq *txq = txctl->txq;
struct ath_buf *bf;
- int r;
+ int q, r;
bf = ath_tx_get_buffer(sc);
if (!bf) {
@@ -1820,8 +1807,6 @@ int ath_tx_start(struct ieee80211_hw *hw, struct sk_buff *skb,
r = ath_tx_setup_buffer(hw, bf, skb, txctl);
if (unlikely(r)) {
- struct ath_txq *txq = txctl->txq;
-
ath_print(common, ATH_DBG_FATAL, "TX mem alloc failure\n");
/* upon ath_tx_processq() this TX queue will be resumed, we
@@ -1829,7 +1814,7 @@ int ath_tx_start(struct ieee80211_hw *hw, struct sk_buff *skb,
* we will at least have to run TX completionon one buffer
* on the queue */
spin_lock_bh(&txq->axq_lock);
- if (sc->tx.txq[txq->axq_qnum].axq_depth > 1) {
+ if (!txq->stopped && txq->axq_depth > 1) {
ath_mac80211_stop_queue(sc, skb_get_queue_mapping(skb));
txq->stopped = 1;
}
@@ -1840,6 +1825,17 @@ int ath_tx_start(struct ieee80211_hw *hw, struct sk_buff *skb,
return r;
}
+ q = skb_get_queue_mapping(skb);
+ if (q >= 4)
+ q = 0;
+
+ spin_lock_bh(&txq->axq_lock);
+ if (++sc->tx.pending_frames[q] > ATH_MAX_QDEPTH && !txq->stopped) {
+ ath_mac80211_stop_queue(sc, skb_get_queue_mapping(skb));
+ txq->stopped = 1;
+ }
+ spin_unlock_bh(&txq->axq_lock);
+
ath_tx_start_dma(sc, bf, txctl);
return 0;
@@ -1909,7 +1905,7 @@ static void ath_tx_complete(struct ath_softc *sc, struct sk_buff *skb,
struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
struct ieee80211_hdr * hdr = (struct ieee80211_hdr *)skb->data;
- int padpos, padsize;
+ int q, padpos, padsize;
ath_print(common, ATH_DBG_XMIT, "TX complete: skb: %p\n", skb);
@@ -1948,8 +1944,16 @@ static void ath_tx_complete(struct ath_softc *sc, struct sk_buff *skb,
if (unlikely(tx_info->pad[0] & ATH_TX_INFO_FRAME_TYPE_INTERNAL))
ath9k_tx_status(hw, skb);
- else
+ else {
+ q = skb_get_queue_mapping(skb);
+ if (q >= 4)
+ q = 0;
+
+ if (--sc->tx.pending_frames[q] < 0)
+ sc->tx.pending_frames[q] = 0;
+
ieee80211_tx_status(hw, skb);
+ }
}
static void ath_tx_complete_buf(struct ath_softc *sc, struct ath_buf *bf,
@@ -1971,8 +1975,18 @@ static void ath_tx_complete_buf(struct ath_softc *sc, struct ath_buf *bf,
}
dma_unmap_single(sc->dev, bf->bf_dmacontext, skb->len, DMA_TO_DEVICE);
- ath_tx_complete(sc, skb, bf->aphy, tx_flags);
- ath_debug_stat_tx(sc, txq, bf, ts);
+
+ if (bf->bf_state.bfs_paprd) {
+ if (time_after(jiffies,
+ bf->bf_state.bfs_paprd_timestamp +
+ msecs_to_jiffies(ATH_PAPRD_TIMEOUT)))
+ dev_kfree_skb_any(skb);
+ else
+ complete(&sc->paprd_complete);
+ } else {
+ ath_tx_complete(sc, skb, bf->aphy, tx_flags);
+ ath_debug_stat_tx(sc, txq, bf, ts);
+ }
/*
* Return the list of ath_buf of this mpdu to free queue
@@ -2050,21 +2064,21 @@ static void ath_tx_rc_status(struct ath_buf *bf, struct ath_tx_status *ts,
tx_info->status.rates[i].idx = -1;
}
- tx_info->status.rates[tx_rateindex].count = bf->bf_retries + 1;
+ tx_info->status.rates[tx_rateindex].count = ts->ts_longretry + 1;
}
static void ath_wake_mac80211_queue(struct ath_softc *sc, struct ath_txq *txq)
{
int qnum;
+ qnum = ath_get_mac80211_qnum(txq->axq_class, sc);
+ if (qnum == -1)
+ return;
+
spin_lock_bh(&txq->axq_lock);
- if (txq->stopped &&
- sc->tx.txq[txq->axq_qnum].axq_depth <= (ATH_TXBUF - 20)) {
- qnum = ath_get_mac80211_qnum(txq->axq_qnum, sc);
- if (qnum != -1) {
- ath_mac80211_start_queue(sc, qnum);
+ if (txq->stopped && sc->tx.pending_frames[qnum] < ATH_MAX_QDEPTH) {
+ if (ath_mac80211_start_queue(sc, qnum))
txq->stopped = 0;
- }
}
spin_unlock_bh(&txq->axq_lock);
}
@@ -2161,7 +2175,6 @@ static void ath_tx_processq(struct ath_softc *sc, struct ath_txq *txq)
* This frame is sent out as a single frame.
* Use hardware retry status for this frame.
*/
- bf->bf_retries = ts.ts_longretry;
if (ts.ts_status & ATH9K_TXERR_XRETRY)
bf->bf_state.bf_type |= BUF_XRETRY;
ath_tx_rc_status(bf, &ts, 0, txok, true);
@@ -2279,8 +2292,18 @@ void ath_tx_edma_tasklet(struct ath_softc *sc)
txok = !(txs.ts_status & ATH9K_TXERR_MASK);
+ /*
+ * Make sure null func frame is acked before configuring
+ * hw into ps mode.
+ */
+ if (bf->bf_isnullfunc && txok) {
+ if ((sc->ps_flags & PS_ENABLED))
+ ath9k_enable_ps(sc);
+ else
+ sc->ps_flags |= PS_NULLFUNC_COMPLETED;
+ }
+
if (!bf_isampdu(bf)) {
- bf->bf_retries = txs.ts_longretry;
if (txs.ts_status & ATH9K_TXERR_XRETRY)
bf->bf_state.bf_type |= BUF_XRETRY;
ath_tx_rc_status(bf, &txs, 0, txok, true);
@@ -2424,62 +2447,44 @@ void ath_tx_node_init(struct ath_softc *sc, struct ath_node *an)
for (acno = 0, ac = &an->ac[acno];
acno < WME_NUM_AC; acno++, ac++) {
ac->sched = false;
+ ac->qnum = sc->tx.hwq_map[acno];
INIT_LIST_HEAD(&ac->tid_q);
-
- switch (acno) {
- case WME_AC_BE:
- ac->qnum = ath_tx_get_qnum(sc,
- ATH9K_TX_QUEUE_DATA, ATH9K_WME_AC_BE);
- break;
- case WME_AC_BK:
- ac->qnum = ath_tx_get_qnum(sc,
- ATH9K_TX_QUEUE_DATA, ATH9K_WME_AC_BK);
- break;
- case WME_AC_VI:
- ac->qnum = ath_tx_get_qnum(sc,
- ATH9K_TX_QUEUE_DATA, ATH9K_WME_AC_VI);
- break;
- case WME_AC_VO:
- ac->qnum = ath_tx_get_qnum(sc,
- ATH9K_TX_QUEUE_DATA, ATH9K_WME_AC_VO);
- break;
- }
}
}
void ath_tx_node_cleanup(struct ath_softc *sc, struct ath_node *an)
{
- int i;
- struct ath_atx_ac *ac, *ac_tmp;
- struct ath_atx_tid *tid, *tid_tmp;
+ struct ath_atx_ac *ac;
+ struct ath_atx_tid *tid;
struct ath_txq *txq;
+ int i, tidno;
- for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) {
- if (ATH_TXQ_SETUP(sc, i)) {
- txq = &sc->tx.txq[i];
+ for (tidno = 0, tid = &an->tid[tidno];
+ tidno < WME_NUM_TID; tidno++, tid++) {
+ i = tid->ac->qnum;
- spin_lock_bh(&txq->axq_lock);
+ if (!ATH_TXQ_SETUP(sc, i))
+ continue;
- list_for_each_entry_safe(ac,
- ac_tmp, &txq->axq_acq, list) {
- tid = list_first_entry(&ac->tid_q,
- struct ath_atx_tid, list);
- if (tid && tid->an != an)
- continue;
- list_del(&ac->list);
- ac->sched = false;
-
- list_for_each_entry_safe(tid,
- tid_tmp, &ac->tid_q, list) {
- list_del(&tid->list);
- tid->sched = false;
- ath_tid_drain(sc, txq, tid);
- tid->state &= ~AGGR_ADDBA_COMPLETE;
- tid->state &= ~AGGR_CLEANUP;
- }
- }
+ txq = &sc->tx.txq[i];
+ ac = tid->ac;
- spin_unlock_bh(&txq->axq_lock);
+ spin_lock_bh(&txq->axq_lock);
+
+ if (tid->sched) {
+ list_del(&tid->list);
+ tid->sched = false;
}
+
+ if (ac->sched) {
+ list_del(&ac->list);
+ tid->ac->sched = false;
+ }
+
+ ath_tid_drain(sc, txq, tid);
+ tid->state &= ~AGGR_ADDBA_COMPLETE;
+ tid->state &= ~AGGR_CLEANUP;
+
+ spin_unlock_bh(&txq->axq_lock);
}
}