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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.c164
1 files changed, 107 insertions, 57 deletions
diff --git a/drivers/net/wireless/ath/ath9k/xmit.c b/drivers/net/wireless/ath/ath9k/xmit.c
index 33a37edbaf79..dcac811ddab5 100644
--- a/drivers/net/wireless/ath/ath9k/xmit.c
+++ b/drivers/net/wireless/ath/ath9k/xmit.c
@@ -19,7 +19,6 @@
#define BITS_PER_BYTE 8
#define OFDM_PLCP_BITS 22
-#define HT_RC_2_MCS(_rc) ((_rc) & 0x1f)
#define HT_RC_2_STREAMS(_rc) ((((_rc) & 0x78) >> 3) + 1)
#define L_STF 8
#define L_LTF 8
@@ -32,7 +31,6 @@
#define NUM_SYMBOLS_PER_USEC(_usec) (_usec >> 2)
#define NUM_SYMBOLS_PER_USEC_HALFGI(_usec) (((_usec*5)-4)/18)
-#define OFDM_SIFS_TIME 16
static u16 bits_per_symbol[][2] = {
/* 20MHz 40MHz */
@@ -169,7 +167,7 @@ static void ath_tx_flush_tid(struct ath_softc *sc, struct ath_atx_tid *tid)
ath_tx_update_baw(sc, tid, fi->seqno);
ath_tx_complete_buf(sc, bf, txq, &bf_head, &ts, 0, 0);
} else {
- ath_tx_send_normal(sc, txq, tid, &bf_head);
+ ath_tx_send_normal(sc, txq, NULL, &bf_head);
}
spin_lock_bh(&txq->axq_lock);
}
@@ -429,7 +427,7 @@ static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq,
ath_tx_count_frames(sc, bf, ts, txok, &nframes, &nbad);
while (bf) {
- txfail = txpending = 0;
+ txfail = txpending = sendbar = 0;
bf_next = bf->bf_next;
skb = bf->bf_mpdu;
@@ -856,7 +854,10 @@ int ath_tx_aggr_start(struct ath_softc *sc, struct ieee80211_sta *sta,
txtid->state |= AGGR_ADDBA_PROGRESS;
txtid->paused = true;
- *ssn = txtid->seq_start;
+ *ssn = txtid->seq_start = txtid->seq_next;
+
+ memset(txtid->tx_buf, 0, sizeof(txtid->tx_buf));
+ txtid->baw_head = txtid->baw_tail = 0;
return 0;
}
@@ -942,7 +943,7 @@ struct ath_txq *ath_txq_setup(struct ath_softc *sc, int qtype, int subtype)
[WME_AC_VI] = ATH_TXQ_AC_VI,
[WME_AC_VO] = ATH_TXQ_AC_VO,
};
- int qnum, i;
+ int axq_qnum, i;
memset(&qi, 0, sizeof(qi));
qi.tqi_subtype = subtype_txq_to_hwq[subtype];
@@ -976,24 +977,25 @@ struct ath_txq *ath_txq_setup(struct ath_softc *sc, int qtype, int subtype)
qi.tqi_qflags = TXQ_FLAG_TXEOLINT_ENABLE |
TXQ_FLAG_TXDESCINT_ENABLE;
}
- qnum = ath9k_hw_setuptxqueue(ah, qtype, &qi);
- if (qnum == -1) {
+ axq_qnum = ath9k_hw_setuptxqueue(ah, qtype, &qi);
+ if (axq_qnum == -1) {
/*
* NB: don't print a message, this happens
* normally on parts with too few tx queues
*/
return NULL;
}
- if (qnum >= ARRAY_SIZE(sc->tx.txq)) {
+ if (axq_qnum >= ARRAY_SIZE(sc->tx.txq)) {
ath_err(common, "qnum %u out of range, max %zu!\n",
- qnum, ARRAY_SIZE(sc->tx.txq));
- ath9k_hw_releasetxqueue(ah, qnum);
+ axq_qnum, ARRAY_SIZE(sc->tx.txq));
+ ath9k_hw_releasetxqueue(ah, axq_qnum);
return NULL;
}
- if (!ATH_TXQ_SETUP(sc, qnum)) {
- struct ath_txq *txq = &sc->tx.txq[qnum];
+ if (!ATH_TXQ_SETUP(sc, axq_qnum)) {
+ struct ath_txq *txq = &sc->tx.txq[axq_qnum];
- txq->axq_qnum = qnum;
+ txq->axq_qnum = axq_qnum;
+ txq->mac80211_qnum = -1;
txq->axq_link = NULL;
INIT_LIST_HEAD(&txq->axq_q);
INIT_LIST_HEAD(&txq->axq_acq);
@@ -1001,14 +1003,14 @@ struct ath_txq *ath_txq_setup(struct ath_softc *sc, int qtype, int subtype)
txq->axq_depth = 0;
txq->axq_ampdu_depth = 0;
txq->axq_tx_inprogress = false;
- sc->tx.txqsetup |= 1<<qnum;
+ sc->tx.txqsetup |= 1<<axq_qnum;
txq->txq_headidx = txq->txq_tailidx = 0;
for (i = 0; i < ATH_TXFIFO_DEPTH; i++)
INIT_LIST_HEAD(&txq->txq_fifo[i]);
INIT_LIST_HEAD(&txq->txq_fifo_pending);
}
- return &sc->tx.txq[qnum];
+ return &sc->tx.txq[axq_qnum];
}
int ath_txq_update(struct ath_softc *sc, int qnum,
@@ -1218,46 +1220,59 @@ void ath_tx_cleanupq(struct ath_softc *sc, struct ath_txq *txq)
sc->tx.txqsetup &= ~(1<<txq->axq_qnum);
}
+/* For each axq_acq entry, for each tid, try to schedule packets
+ * for transmit until ampdu_depth has reached min Q depth.
+ */
void ath_txq_schedule(struct ath_softc *sc, struct ath_txq *txq)
{
- struct ath_atx_ac *ac;
- struct ath_atx_tid *tid;
+ struct ath_atx_ac *ac, *ac_tmp, *last_ac;
+ struct ath_atx_tid *tid, *last_tid;
- if (list_empty(&txq->axq_acq))
+ if (list_empty(&txq->axq_acq) ||
+ txq->axq_ampdu_depth >= ATH_AGGR_MIN_QDEPTH)
return;
ac = list_first_entry(&txq->axq_acq, struct ath_atx_ac, list);
- list_del(&ac->list);
- ac->sched = false;
+ last_ac = list_entry(txq->axq_acq.prev, struct ath_atx_ac, list);
- do {
- if (list_empty(&ac->tid_q))
- return;
+ list_for_each_entry_safe(ac, ac_tmp, &txq->axq_acq, list) {
+ last_tid = list_entry(ac->tid_q.prev, struct ath_atx_tid, list);
+ list_del(&ac->list);
+ ac->sched = false;
- tid = list_first_entry(&ac->tid_q, struct ath_atx_tid, list);
- list_del(&tid->list);
- tid->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 (tid->paused)
- continue;
+ if (tid->paused)
+ continue;
- ath_tx_sched_aggr(sc, txq, tid);
+ ath_tx_sched_aggr(sc, txq, tid);
- /*
- * add tid to round-robin queue if more frames
- * are pending for the tid
- */
- if (!list_empty(&tid->buf_q))
- ath_tx_queue_tid(txq, tid);
+ /*
+ * add tid to round-robin queue if more frames
+ * are pending for the tid
+ */
+ if (!list_empty(&tid->buf_q))
+ ath_tx_queue_tid(txq, tid);
- break;
- } while (!list_empty(&ac->tid_q));
+ if (tid == last_tid ||
+ txq->axq_ampdu_depth >= ATH_AGGR_MIN_QDEPTH)
+ break;
+ }
- if (!list_empty(&ac->tid_q)) {
- if (!ac->sched) {
- ac->sched = true;
- list_add_tail(&ac->list, &txq->axq_acq);
+ if (!list_empty(&ac->tid_q)) {
+ if (!ac->sched) {
+ ac->sched = true;
+ list_add_tail(&ac->list, &txq->axq_acq);
+ }
}
+
+ if (ac == last_ac ||
+ txq->axq_ampdu_depth >= ATH_AGGR_MIN_QDEPTH)
+ return;
}
}
@@ -1301,6 +1316,7 @@ static void ath_tx_txqaddbuf(struct ath_softc *sc, struct ath_txq *txq,
INIT_LIST_HEAD(&txq->txq_fifo[txq->txq_headidx]);
list_splice_init(head, &txq->txq_fifo[txq->txq_headidx]);
INCR(txq->txq_headidx, ATH_TXFIFO_DEPTH);
+ TX_STAT_INC(txq->axq_qnum, puttxbuf);
ath9k_hw_puttxbuf(ah, txq->axq_qnum, bf->bf_daddr);
ath_dbg(common, ATH_DBG_XMIT, "TXDP[%u] = %llx (%p)\n",
txq->axq_qnum, ito64(bf->bf_daddr), bf->bf_desc);
@@ -1308,6 +1324,7 @@ static void ath_tx_txqaddbuf(struct ath_softc *sc, struct ath_txq *txq,
list_splice_tail_init(head, &txq->axq_q);
if (txq->axq_link == NULL) {
+ TX_STAT_INC(txq->axq_qnum, puttxbuf);
ath9k_hw_puttxbuf(ah, txq->axq_qnum, bf->bf_daddr);
ath_dbg(common, ATH_DBG_XMIT, "TXDP[%u] = %llx (%p)\n",
txq->axq_qnum, ito64(bf->bf_daddr),
@@ -1321,6 +1338,7 @@ static void ath_tx_txqaddbuf(struct ath_softc *sc, struct ath_txq *txq,
}
ath9k_hw_get_desc_link(ah, bf->bf_lastbf->bf_desc,
&txq->axq_link);
+ TX_STAT_INC(txq->axq_qnum, txstart);
ath9k_hw_txstart(ah, txq->axq_qnum);
}
txq->axq_depth++;
@@ -1335,7 +1353,6 @@ static void ath_tx_send_ampdu(struct ath_softc *sc, struct ath_atx_tid *tid,
struct list_head bf_head;
bf->bf_state.bf_type |= BUF_AMPDU;
- TX_STAT_INC(txctl->txq->axq_qnum, a_queued);
/*
* Do not queue to h/w when any of the following conditions is true:
@@ -1351,6 +1368,7 @@ static void ath_tx_send_ampdu(struct ath_softc *sc, struct ath_atx_tid *tid,
* Add this frame to software queue for scheduling later
* for aggregation.
*/
+ TX_STAT_INC(txctl->txq->axq_qnum, a_queued_sw);
list_add_tail(&bf->list, &tid->buf_q);
ath_tx_queue_tid(txctl->txq, tid);
return;
@@ -1364,6 +1382,7 @@ static void ath_tx_send_ampdu(struct ath_softc *sc, struct ath_atx_tid *tid,
ath_tx_addto_baw(sc, tid, fi->seqno);
/* Queue to h/w without aggregation */
+ TX_STAT_INC(txctl->txq->axq_qnum, a_queued_hw);
bf->bf_lastbf = bf;
ath_buf_set_rate(sc, bf, fi->framelen);
ath_tx_txqaddbuf(sc, txctl->txq, &bf_head);
@@ -1966,17 +1985,16 @@ static void ath_tx_rc_status(struct ath_buf *bf, struct ath_tx_status *ts,
tx_info->status.rates[tx_rateindex].count = ts->ts_longretry + 1;
}
-static void ath_wake_mac80211_queue(struct ath_softc *sc, int qnum)
+/* Has no locking. Must hold spin_lock_bh(&txq->axq_lock)
+ * before calling this.
+ */
+static void __ath_wake_mac80211_queue(struct ath_softc *sc, struct ath_txq *txq)
{
- struct ath_txq *txq;
-
- txq = sc->tx.txq_map[qnum];
- spin_lock_bh(&txq->axq_lock);
- if (txq->stopped && txq->pending_frames < ATH_MAX_QDEPTH) {
- if (ath_mac80211_start_queue(sc, qnum))
+ if (txq->mac80211_qnum >= 0 &&
+ txq->stopped && txq->pending_frames < ATH_MAX_QDEPTH) {
+ if (ath_mac80211_start_queue(sc, txq->mac80211_qnum))
txq->stopped = 0;
}
- spin_unlock_bh(&txq->axq_lock);
}
static void ath_tx_processq(struct ath_softc *sc, struct ath_txq *txq)
@@ -1999,6 +2017,8 @@ static void ath_tx_processq(struct ath_softc *sc, struct ath_txq *txq)
spin_lock_bh(&txq->axq_lock);
if (list_empty(&txq->axq_q)) {
txq->axq_link = NULL;
+ if (sc->sc_flags & SC_OP_TXAGGR)
+ ath_txq_schedule(sc, txq);
spin_unlock_bh(&txq->axq_lock);
break;
}
@@ -2033,6 +2053,7 @@ static void ath_tx_processq(struct ath_softc *sc, struct ath_txq *txq)
spin_unlock_bh(&txq->axq_lock);
break;
}
+ TX_STAT_INC(txq->axq_qnum, txprocdesc);
/*
* Remove ath_buf's of the same transmit unit from txq,
@@ -2076,10 +2097,9 @@ static void ath_tx_processq(struct ath_softc *sc, struct ath_txq *txq)
else
ath_tx_complete_buf(sc, bf, txq, &bf_head, &ts, txok, 0);
- if (txq == sc->tx.txq_map[qnum])
- ath_wake_mac80211_queue(sc, qnum);
-
spin_lock_bh(&txq->axq_lock);
+ __ath_wake_mac80211_queue(sc, txq);
+
if (sc->sc_flags & SC_OP_TXAGGR)
ath_txq_schedule(sc, txq);
spin_unlock_bh(&txq->axq_lock);
@@ -2093,6 +2113,9 @@ static void ath_tx_complete_poll_work(struct work_struct *work)
struct ath_txq *txq;
int i;
bool needreset = false;
+#ifdef CONFIG_ATH9K_DEBUGFS
+ sc->tx_complete_poll_work_seen++;
+#endif
for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++)
if (ATH_TXQ_SETUP(sc, i)) {
@@ -2106,6 +2129,34 @@ static void ath_tx_complete_poll_work(struct work_struct *work)
} else {
txq->axq_tx_inprogress = true;
}
+ } else {
+ /* If the queue has pending buffers, then it
+ * should be doing tx work (and have axq_depth).
+ * Shouldn't get to this state I think..but
+ * we do.
+ */
+ if (!(sc->sc_flags & (SC_OP_OFFCHANNEL)) &&
+ (txq->pending_frames > 0 ||
+ !list_empty(&txq->axq_acq) ||
+ txq->stopped)) {
+ ath_err(ath9k_hw_common(sc->sc_ah),
+ "txq: %p axq_qnum: %u,"
+ " mac80211_qnum: %i"
+ " axq_link: %p"
+ " pending frames: %i"
+ " axq_acq empty: %i"
+ " stopped: %i"
+ " axq_depth: 0 Attempting to"
+ " restart tx logic.\n",
+ txq, txq->axq_qnum,
+ txq->mac80211_qnum,
+ txq->axq_link,
+ txq->pending_frames,
+ list_empty(&txq->axq_acq),
+ txq->stopped);
+ __ath_wake_mac80211_queue(sc, txq);
+ ath_txq_schedule(sc, txq);
+ }
}
spin_unlock_bh(&txq->axq_lock);
}
@@ -2200,10 +2251,9 @@ void ath_tx_edma_tasklet(struct ath_softc *sc)
ath_tx_complete_buf(sc, bf, txq, &bf_head,
&txs, txok, 0);
- if (txq == sc->tx.txq_map[qnum])
- ath_wake_mac80211_queue(sc, qnum);
-
spin_lock_bh(&txq->axq_lock);
+ __ath_wake_mac80211_queue(sc, txq);
+
if (!list_empty(&txq->txq_fifo_pending)) {
INIT_LIST_HEAD(&bf_head);
bf = list_first_entry(&txq->txq_fifo_pending,
generated by cgit v1.2.3 (git 2.39.0) at 2025-02-04 18:19:08 +0300