#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
#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 */
#define IS_HT_RATE(_rate) ((_rate) & 0x80)
-static void ath_tx_send_ht_normal(struct ath_softc *sc, struct ath_txq *txq,
- struct ath_atx_tid *tid,
- struct list_head *bf_head);
+static void ath_tx_send_normal(struct ath_softc *sc, struct ath_txq *txq,
+ struct ath_atx_tid *tid,
+ struct list_head *bf_head);
static void ath_tx_complete_buf(struct ath_softc *sc, struct ath_buf *bf,
struct ath_txq *txq, struct list_head *bf_q,
struct ath_tx_status *ts, int txok, int sendbar);
static void ath_tx_txqaddbuf(struct ath_softc *sc, struct ath_txq *txq,
struct list_head *head);
-static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf);
-static int ath_tx_num_badfrms(struct ath_softc *sc, struct ath_buf *bf,
- struct ath_tx_status *ts, int txok);
-static void ath_tx_rc_status(struct ath_buf *bf, struct ath_tx_status *ts,
- int nbad, int txok, bool update_rc);
+static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf, int len);
+static void ath_tx_rc_status(struct ath_softc *sc, struct ath_buf *bf,
+ struct ath_tx_status *ts, int nframes, int nbad,
+ int txok, bool update_rc);
static void ath_tx_update_baw(struct ath_softc *sc, struct ath_atx_tid *tid,
int seqno);
static void ath_tx_resume_tid(struct ath_softc *sc, struct ath_atx_tid *tid)
{
- struct ath_txq *txq = &sc->tx.txq[tid->ac->qnum];
+ struct ath_txq *txq = tid->ac->txq;
WARN_ON(!tid->paused);
spin_unlock_bh(&txq->axq_lock);
}
+static struct ath_frame_info *get_frame_info(struct sk_buff *skb)
+{
+ struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
+ BUILD_BUG_ON(sizeof(struct ath_frame_info) >
+ sizeof(tx_info->rate_driver_data));
+ return (struct ath_frame_info *) &tx_info->rate_driver_data[0];
+}
+
static void ath_tx_flush_tid(struct ath_softc *sc, struct ath_atx_tid *tid)
{
- struct ath_txq *txq = &sc->tx.txq[tid->ac->qnum];
+ struct ath_txq *txq = tid->ac->txq;
struct ath_buf *bf;
struct list_head bf_head;
struct ath_tx_status ts;
+ struct ath_frame_info *fi;
INIT_LIST_HEAD(&bf_head);
bf = list_first_entry(&tid->buf_q, struct ath_buf, list);
list_move_tail(&bf->list, &bf_head);
- if (bf_isretried(bf)) {
- ath_tx_update_baw(sc, tid, bf->bf_seqno);
+ spin_unlock_bh(&txq->axq_lock);
+ fi = get_frame_info(bf->bf_mpdu);
+ if (fi->retries) {
+ ath_tx_update_baw(sc, tid, fi->seqno);
ath_tx_complete_buf(sc, bf, txq, &bf_head, &ts, 0, 0);
} else {
- ath_tx_send_ht_normal(sc, txq, tid, &bf_head);
+ ath_tx_send_normal(sc, txq, NULL, &bf_head);
}
+ spin_lock_bh(&txq->axq_lock);
}
spin_unlock_bh(&txq->axq_lock);
}
static void ath_tx_addto_baw(struct ath_softc *sc, struct ath_atx_tid *tid,
- struct ath_buf *bf)
+ u16 seqno)
{
int index, cindex;
- if (bf_isretried(bf))
- return;
-
- index = ATH_BA_INDEX(tid->seq_start, bf->bf_seqno);
+ index = ATH_BA_INDEX(tid->seq_start, seqno);
cindex = (tid->baw_head + index) & (ATH_TID_MAX_BUFS - 1);
__set_bit(cindex, tid->tx_buf);
struct ath_buf *bf;
struct list_head bf_head;
struct ath_tx_status ts;
+ struct ath_frame_info *fi;
memset(&ts, 0, sizeof(ts));
INIT_LIST_HEAD(&bf_head);
bf = list_first_entry(&tid->buf_q, struct ath_buf, list);
list_move_tail(&bf->list, &bf_head);
- if (bf_isretried(bf))
- ath_tx_update_baw(sc, tid, bf->bf_seqno);
+ fi = get_frame_info(bf->bf_mpdu);
+ if (fi->retries)
+ ath_tx_update_baw(sc, tid, fi->seqno);
spin_unlock(&txq->axq_lock);
ath_tx_complete_buf(sc, bf, txq, &bf_head, &ts, 0, 0);
}
static void ath_tx_set_retry(struct ath_softc *sc, struct ath_txq *txq,
- struct ath_buf *bf)
+ struct sk_buff *skb)
{
- struct sk_buff *skb;
+ struct ath_frame_info *fi = get_frame_info(skb);
struct ieee80211_hdr *hdr;
- bf->bf_state.bf_type |= BUF_RETRY;
- bf->bf_retries++;
TX_STAT_INC(txq->axq_qnum, a_retries);
+ if (fi->retries++ > 0)
+ return;
- skb = bf->bf_mpdu;
hdr = (struct ieee80211_hdr *)skb->data;
hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_RETRY);
}
ATH_TXBUF_RESET(tbf);
- tbf->aphy = bf->aphy;
tbf->bf_mpdu = bf->bf_mpdu;
tbf->bf_buf_addr = bf->bf_buf_addr;
memcpy(tbf->bf_desc, bf->bf_desc, sc->sc_ah->caps.tx_desc_len);
return tbf;
}
+static void ath_tx_count_frames(struct ath_softc *sc, struct ath_buf *bf,
+ struct ath_tx_status *ts, int txok,
+ int *nframes, int *nbad)
+{
+ struct ath_frame_info *fi;
+ u16 seq_st = 0;
+ u32 ba[WME_BA_BMP_SIZE >> 5];
+ int ba_index;
+ int isaggr = 0;
+
+ *nbad = 0;
+ *nframes = 0;
+
+ isaggr = bf_isaggr(bf);
+ if (isaggr) {
+ seq_st = ts->ts_seqnum;
+ memcpy(ba, &ts->ba_low, WME_BA_BMP_SIZE >> 3);
+ }
+
+ while (bf) {
+ fi = get_frame_info(bf->bf_mpdu);
+ ba_index = ATH_BA_INDEX(seq_st, fi->seqno);
+
+ (*nframes)++;
+ if (!txok || (isaggr && !ATH_BA_ISSET(ba, ba_index)))
+ (*nbad)++;
+
+ bf = bf->bf_next;
+ }
+}
+
+
static void ath_tx_complete_aggr(struct ath_softc *sc, struct ath_txq *txq,
struct ath_buf *bf, struct list_head *bf_q,
- struct ath_tx_status *ts, int txok)
+ struct ath_tx_status *ts, int txok, bool retry)
{
struct ath_node *an = NULL;
struct sk_buff *skb;
struct ieee80211_sta *sta;
- struct ieee80211_hw *hw;
+ struct ieee80211_hw *hw = sc->hw;
struct ieee80211_hdr *hdr;
struct ieee80211_tx_info *tx_info;
struct ath_atx_tid *tid = NULL;
int isaggr, txfail, txpending, sendbar = 0, needreset = 0, nbad = 0;
bool rc_update = true;
struct ieee80211_tx_rate rates[4];
+ struct ath_frame_info *fi;
int nframes;
+ u8 tidno;
skb = bf->bf_mpdu;
hdr = (struct ieee80211_hdr *)skb->data;
tx_info = IEEE80211_SKB_CB(skb);
- hw = bf->aphy->hw;
memcpy(rates, tx_info->control.rates, sizeof(rates));
- nframes = bf->bf_nframes;
rcu_read_lock();
!bf->bf_stale || bf_next != NULL)
list_move_tail(&bf->list, &bf_head);
- ath_tx_rc_status(bf, ts, 1, 0, false);
+ ath_tx_rc_status(sc, bf, ts, 1, 1, 0, false);
ath_tx_complete_buf(sc, bf, txq, &bf_head, ts,
0, 0);
}
an = (struct ath_node *)sta->drv_priv;
- tid = ATH_AN_2_TID(an, bf->bf_tidno);
+ tidno = ieee80211_get_qos_ctl(hdr)[0] & IEEE80211_QOS_CTL_TID_MASK;
+ tid = ATH_AN_2_TID(an, 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)
+ if (tidno != ts->tid)
txok = false;
isaggr = bf_isaggr(bf);
INIT_LIST_HEAD(&bf_pending);
INIT_LIST_HEAD(&bf_head);
- nbad = ath_tx_num_badfrms(sc, bf, ts, txok);
+ 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;
tx_info = IEEE80211_SKB_CB(skb);
+ fi = get_frame_info(skb);
- if (ATH_BA_ISSET(ba, ATH_BA_INDEX(seq_st, bf->bf_seqno))) {
+ if (ATH_BA_ISSET(ba, ATH_BA_INDEX(seq_st, fi->seqno))) {
/* transmit completion, subframe is
* acked by block ack */
acked_cnt++;
/* transmit completion */
acked_cnt++;
} else {
- if (!(tid->state & AGGR_CLEANUP) &&
- !bf_last->bf_tx_aborted) {
- if (bf->bf_retries < ATH_MAX_SW_RETRIES) {
- ath_tx_set_retry(sc, txq, bf);
+ if (!(tid->state & AGGR_CLEANUP) && retry) {
+ if (fi->retries < ATH_MAX_SW_RETRIES) {
+ ath_tx_set_retry(sc, txq, bf->bf_mpdu);
txpending = 1;
} else {
bf->bf_state.bf_type |= BUF_XRETRY;
* block-ack window
*/
spin_lock_bh(&txq->axq_lock);
- ath_tx_update_baw(sc, tid, bf->bf_seqno);
+ ath_tx_update_baw(sc, tid, fi->seqno);
spin_unlock_bh(&txq->axq_lock);
if (rc_update && (acked_cnt == 1 || txfail_cnt == 1)) {
memcpy(tx_info->control.rates, rates, sizeof(rates));
- bf->bf_nframes = nframes;
- ath_tx_rc_status(bf, ts, nbad, txok, true);
+ ath_tx_rc_status(sc, bf, ts, nframes, nbad, txok, true);
rc_update = false;
} else {
- ath_tx_rc_status(bf, ts, nbad, txok, false);
+ ath_tx_rc_status(sc, bf, ts, nframes, nbad, txok, false);
}
ath_tx_complete_buf(sc, bf, txq, &bf_head, ts,
*/
if (!tbf) {
spin_lock_bh(&txq->axq_lock);
- ath_tx_update_baw(sc, tid,
- bf->bf_seqno);
+ ath_tx_update_baw(sc, tid, fi->seqno);
spin_unlock_bh(&txq->axq_lock);
bf->bf_state.bf_type |=
BUF_XRETRY;
- ath_tx_rc_status(bf, ts, nbad,
- 0, false);
+ ath_tx_rc_status(sc, bf, ts, nframes,
+ nbad, 0, false);
ath_tx_complete_buf(sc, bf, txq,
&bf_head,
ts, 0, 0);
rcu_read_unlock();
- if (needreset)
+ if (needreset) {
+ spin_unlock_bh(&sc->sc_pcu_lock);
ath_reset(sc, false);
+ spin_lock_bh(&sc->sc_pcu_lock);
+ }
}
static u32 ath_lookup_rate(struct ath_softc *sc, struct ath_buf *bf,
u16 minlen;
u8 flags, rix;
int width, streams, half_gi, ndelim, mindelim;
+ struct ath_frame_info *fi = get_frame_info(bf->bf_mpdu);
/* Select standard number of delimiters based on frame length alone */
ndelim = ATH_AGGR_GET_NDELIM(frmlen);
* TODO - this could be improved to be dependent on the rate.
* The hardware can keep up at lower rates, but not higher rates
*/
- if (bf->bf_keytype != ATH9K_KEY_TYPE_CLEAR)
+ if (fi->keyix != ATH9K_TXKEYIX_INVALID)
ndelim += ATH_AGGR_ENCRYPTDELIM;
/*
static enum ATH_AGGR_STATUS ath_tx_form_aggr(struct ath_softc *sc,
struct ath_txq *txq,
struct ath_atx_tid *tid,
- struct list_head *bf_q)
+ struct list_head *bf_q,
+ int *aggr_len)
{
#define PADBYTES(_len) ((4 - ((_len) % 4)) % 4)
struct ath_buf *bf, *bf_first, *bf_prev = NULL;
al_delta, h_baw = tid->baw_size / 2;
enum ATH_AGGR_STATUS status = ATH_AGGR_DONE;
struct ieee80211_tx_info *tx_info;
+ struct ath_frame_info *fi;
bf_first = list_first_entry(&tid->buf_q, struct ath_buf, list);
do {
bf = list_first_entry(&tid->buf_q, struct ath_buf, list);
+ fi = get_frame_info(bf->bf_mpdu);
/* do not step over block-ack window */
- if (!BAW_WITHIN(tid->seq_start, tid->baw_size, bf->bf_seqno)) {
+ if (!BAW_WITHIN(tid->seq_start, tid->baw_size, fi->seqno)) {
status = ATH_AGGR_BAW_CLOSED;
break;
}
}
/* do not exceed aggregation limit */
- al_delta = ATH_AGGR_DELIM_SZ + bf->bf_frmlen;
+ al_delta = ATH_AGGR_DELIM_SZ + fi->framelen;
if (nframes &&
(aggr_limit < (al + bpad + al_delta + prev_al))) {
* Get the delimiters needed to meet the MPDU
* density for this node.
*/
- ndelim = ath_compute_num_delims(sc, tid, bf_first, bf->bf_frmlen);
+ ndelim = ath_compute_num_delims(sc, tid, bf_first, fi->framelen);
bpad = PADBYTES(al_delta) + (ndelim << 2);
bf->bf_next = NULL;
ath9k_hw_set_desc_link(sc->sc_ah, bf->bf_desc, 0);
/* link buffers of this frame to the aggregate */
- ath_tx_addto_baw(sc, tid, bf);
+ if (!fi->retries)
+ ath_tx_addto_baw(sc, tid, fi->seqno);
ath9k_hw_set11n_aggr_middle(sc->sc_ah, bf->bf_desc, ndelim);
list_move_tail(&bf->list, bf_q);
if (bf_prev) {
} while (!list_empty(&tid->buf_q));
- bf_first->bf_al = al;
- bf_first->bf_nframes = nframes;
+ *aggr_len = al;
return status;
#undef PADBYTES
{
struct ath_buf *bf;
enum ATH_AGGR_STATUS status;
+ struct ath_frame_info *fi;
struct list_head bf_q;
+ int aggr_len;
do {
if (list_empty(&tid->buf_q))
INIT_LIST_HEAD(&bf_q);
- status = ath_tx_form_aggr(sc, txq, tid, &bf_q);
+ status = ath_tx_form_aggr(sc, txq, tid, &bf_q, &aggr_len);
/*
* no frames picked up to be aggregated;
bf->bf_lastbf = list_entry(bf_q.prev, struct ath_buf, list);
/* if only one frame, send as non-aggregate */
- if (bf->bf_nframes == 1) {
+ if (bf == bf->bf_lastbf) {
+ fi = get_frame_info(bf->bf_mpdu);
+
bf->bf_state.bf_type &= ~BUF_AGGR;
ath9k_hw_clr11n_aggr(sc->sc_ah, bf->bf_desc);
- ath_buf_set_rate(sc, bf);
+ ath_buf_set_rate(sc, bf, fi->framelen);
ath_tx_txqaddbuf(sc, txq, &bf_q);
continue;
}
/* setup first desc of aggregate */
bf->bf_state.bf_type |= BUF_AGGR;
- ath_buf_set_rate(sc, bf);
- ath9k_hw_set11n_aggr_first(sc->sc_ah, bf->bf_desc, bf->bf_al);
+ ath_buf_set_rate(sc, bf, aggr_len);
+ ath9k_hw_set11n_aggr_first(sc->sc_ah, bf->bf_desc, aggr_len);
/* anchor last desc of aggregate */
ath9k_hw_set11n_aggr_last(sc->sc_ah, bf->bf_lastbf->bf_desc);
ath_tx_txqaddbuf(sc, txq, &bf_q);
TX_STAT_INC(txq->axq_qnum, a_aggr);
- } while (txq->axq_depth < ATH_AGGR_MIN_QDEPTH &&
+ } while (txq->axq_ampdu_depth < ATH_AGGR_MIN_QDEPTH &&
status != ATH_AGGR_BAW_CLOSED);
}
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;
}
{
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 = &sc->tx.txq[txtid->ac->qnum];
+ struct ath_txq *txq = txtid->ac->txq;
if (txtid->state & AGGR_CLEANUP)
return;
struct ath_hw *ah = sc->sc_ah;
struct ath_common *common = ath9k_hw_common(ah);
struct ath9k_tx_queue_info qi;
- int qnum, i;
+ static const int subtype_txq_to_hwq[] = {
+ [WME_AC_BE] = ATH_TXQ_AC_BE,
+ [WME_AC_BK] = ATH_TXQ_AC_BK,
+ [WME_AC_VI] = ATH_TXQ_AC_VI,
+ [WME_AC_VO] = ATH_TXQ_AC_VO,
+ };
+ int axq_qnum, i;
memset(&qi, 0, sizeof(qi));
- qi.tqi_subtype = subtype;
+ qi.tqi_subtype = subtype_txq_to_hwq[subtype];
qi.tqi_aifs = ATH9K_TXQ_USEDEFAULT;
qi.tqi_cwmin = ATH9K_TXQ_USEDEFAULT;
qi.tqi_cwmax = ATH9K_TXQ_USEDEFAULT;
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)) {
- ath_print(common, ATH_DBG_FATAL,
- "qnum %u out of range, max %u!\n",
- qnum, (unsigned int)ARRAY_SIZE(sc->tx.txq));
- ath9k_hw_releasetxqueue(ah, qnum);
+ if (axq_qnum >= ARRAY_SIZE(sc->tx.txq)) {
+ ath_err(common, "qnum %u out of range, max %zu!\n",
+ 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_class = subtype;
- 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);
spin_lock_init(&txq->axq_lock);
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,
qi.tqi_readyTime = qinfo->tqi_readyTime;
if (!ath9k_hw_set_txq_props(ah, qnum, &qi)) {
- ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_FATAL,
- "Unable to update hardware queue %u!\n", qnum);
+ ath_err(ath9k_hw_common(sc->sc_ah),
+ "Unable to update hardware queue %u!\n", qnum);
error = -EIO;
} else {
ath9k_hw_resettxqueue(ah, qnum);
return 0;
}
+static bool bf_is_ampdu_not_probing(struct ath_buf *bf)
+{
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(bf->bf_mpdu);
+ return bf_isampdu(bf) && !(info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE);
+}
+
/*
* Drain a given TX queue (could be Beacon or Data)
*
}
lastbf = bf->bf_lastbf;
- if (!retry_tx)
- lastbf->bf_tx_aborted = true;
if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) {
list_cut_position(&bf_head,
}
txq->axq_depth--;
-
+ if (bf_is_ampdu_not_probing(bf))
+ txq->axq_ampdu_depth--;
spin_unlock_bh(&txq->axq_lock);
if (bf_isampdu(bf))
- ath_tx_complete_aggr(sc, txq, bf, &bf_head, &ts, 0);
+ ath_tx_complete_aggr(sc, txq, bf, &bf_head, &ts, 0,
+ retry_tx);
else
ath_tx_complete_buf(sc, bf, txq, &bf_head, &ts, 0, 0);
}
if (bf_isampdu(bf))
ath_tx_complete_aggr(sc, txq, bf, &bf_head,
- &ts, 0);
+ &ts, 0, retry_tx);
else
ath_tx_complete_buf(sc, bf, txq, &bf_head,
&ts, 0, 0);
}
if (npend)
- ath_print(common, ATH_DBG_FATAL, "Failed to stop TX DMA!\n");
+ ath_err(common, "Failed to stop TX DMA!\n");
for (i = 0; i < ATH9K_NUM_TX_QUEUES; i++) {
- if (ATH_TXQ_SETUP(sc, i))
- ath_draintxq(sc, &sc->tx.txq[i], retry_tx);
+ if (!ATH_TXQ_SETUP(sc, i))
+ continue;
+
+ /*
+ * The caller will resume queues with ieee80211_wake_queues.
+ * Mark the queue as not stopped to prevent ath_tx_complete
+ * from waking the queue too early.
+ */
+ txq = &sc->tx.txq[i];
+ txq->stopped = false;
+ ath_draintxq(sc, txq, retry_tx);
}
return !npend;
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;
-
- tid = list_first_entry(&ac->tid_q, struct ath_atx_tid, list);
- list_del(&tid->list);
- tid->sched = false;
+ 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;
- if (tid->paused)
- continue;
+ 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;
- ath_tx_sched_aggr(sc, txq, tid);
+ if (tid->paused)
+ continue;
- /*
- * 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);
+ ath_tx_sched_aggr(sc, txq, tid);
- break;
- } while (!list_empty(&ac->tid_q));
+ /*
+ * 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);
- if (!list_empty(&ac->tid_q)) {
- if (!ac->sched) {
- ac->sched = true;
- list_add_tail(&ac->list, &txq->axq_acq);
+ if (tid == last_tid ||
+ txq->axq_ampdu_depth >= ATH_AGGR_MIN_QDEPTH)
+ break;
}
- }
-}
-int ath_tx_setup(struct ath_softc *sc, int haltype)
-{
- struct ath_txq *txq;
+ if (!list_empty(&ac->tid_q)) {
+ if (!ac->sched) {
+ ac->sched = true;
+ list_add_tail(&ac->list, &txq->axq_acq);
+ }
+ }
- 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 0;
+ if (ac == last_ac ||
+ txq->axq_ampdu_depth >= ATH_AGGR_MIN_QDEPTH)
+ return;
}
- txq = ath_txq_setup(sc, ATH9K_TX_QUEUE_DATA, haltype);
- if (txq != NULL) {
- sc->tx.hwq_map[haltype] = txq->axq_qnum;
- return 1;
- } else
- return 0;
}
/***********/
bf = list_first_entry(head, struct ath_buf, list);
- ath_print(common, ATH_DBG_QUEUE,
- "qnum: %d, txq depth: %d\n", txq->axq_qnum, txq->axq_depth);
+ ath_dbg(common, ATH_DBG_QUEUE,
+ "qnum: %d, txq depth: %d\n", txq->axq_qnum, txq->axq_depth);
if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) {
if (txq->axq_depth >= ATH_TXFIFO_DEPTH) {
return;
}
if (!list_empty(&txq->txq_fifo[txq->txq_headidx]))
- ath_print(common, ATH_DBG_XMIT,
- "Initializing tx fifo %d which "
- "is non-empty\n",
- txq->txq_headidx);
+ ath_dbg(common, ATH_DBG_XMIT,
+ "Initializing tx fifo %d which is non-empty\n",
+ txq->txq_headidx);
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_print(common, ATH_DBG_XMIT,
- "TXDP[%u] = %llx (%p)\n",
- txq->axq_qnum, ito64(bf->bf_daddr), bf->bf_desc);
+ ath_dbg(common, ATH_DBG_XMIT, "TXDP[%u] = %llx (%p)\n",
+ txq->axq_qnum, ito64(bf->bf_daddr), bf->bf_desc);
} else {
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_print(common, ATH_DBG_XMIT,
- "TXDP[%u] = %llx (%p)\n",
- txq->axq_qnum, ito64(bf->bf_daddr),
- bf->bf_desc);
+ ath_dbg(common, ATH_DBG_XMIT, "TXDP[%u] = %llx (%p)\n",
+ txq->axq_qnum, ito64(bf->bf_daddr),
+ bf->bf_desc);
} else {
*txq->axq_link = bf->bf_daddr;
- ath_print(common, ATH_DBG_XMIT,
- "link[%u] (%p)=%llx (%p)\n",
- txq->axq_qnum, txq->axq_link,
- ito64(bf->bf_daddr), bf->bf_desc);
+ ath_dbg(common, ATH_DBG_XMIT,
+ "link[%u] (%p)=%llx (%p)\n",
+ txq->axq_qnum, txq->axq_link,
+ ito64(bf->bf_daddr), bf->bf_desc);
}
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++;
+ if (bf_is_ampdu_not_probing(bf))
+ txq->axq_ampdu_depth++;
}
static void ath_tx_send_ampdu(struct ath_softc *sc, struct ath_atx_tid *tid,
- struct list_head *bf_head,
- struct ath_tx_control *txctl)
+ struct ath_buf *bf, struct ath_tx_control *txctl)
{
- struct ath_buf *bf;
+ struct ath_frame_info *fi = get_frame_info(bf->bf_mpdu);
+ struct list_head bf_head;
- bf = list_first_entry(bf_head, struct ath_buf, list);
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:
* - h/w queue depth exceeds low water mark
*/
if (!list_empty(&tid->buf_q) || tid->paused ||
- !BAW_WITHIN(tid->seq_start, tid->baw_size, bf->bf_seqno) ||
- txctl->txq->axq_depth >= ATH_AGGR_MIN_QDEPTH) {
+ !BAW_WITHIN(tid->seq_start, tid->baw_size, fi->seqno) ||
+ txctl->txq->axq_ampdu_depth >= ATH_AGGR_MIN_QDEPTH) {
/*
* Add this frame to software queue for scheduling later
* for aggregation.
*/
- list_move_tail(&bf->list, &tid->buf_q);
+ 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;
}
+ INIT_LIST_HEAD(&bf_head);
+ list_add(&bf->list, &bf_head);
+
/* Add sub-frame to BAW */
- ath_tx_addto_baw(sc, tid, bf);
+ if (!fi->retries)
+ ath_tx_addto_baw(sc, tid, fi->seqno);
/* Queue to h/w without aggregation */
- bf->bf_nframes = 1;
+ TX_STAT_INC(txctl->txq->axq_qnum, a_queued_hw);
bf->bf_lastbf = bf;
- ath_buf_set_rate(sc, bf);
- ath_tx_txqaddbuf(sc, txctl->txq, bf_head);
+ ath_buf_set_rate(sc, bf, fi->framelen);
+ ath_tx_txqaddbuf(sc, txctl->txq, &bf_head);
}
-static void ath_tx_send_ht_normal(struct ath_softc *sc, struct ath_txq *txq,
- struct ath_atx_tid *tid,
- struct list_head *bf_head)
+static void ath_tx_send_normal(struct ath_softc *sc, struct ath_txq *txq,
+ struct ath_atx_tid *tid,
+ struct list_head *bf_head)
{
+ struct ath_frame_info *fi;
struct ath_buf *bf;
bf = list_first_entry(bf_head, struct ath_buf, list);
bf->bf_state.bf_type &= ~BUF_AMPDU;
/* update starting sequence number for subsequent ADDBA request */
- INCR(tid->seq_start, IEEE80211_SEQ_MAX);
-
- bf->bf_nframes = 1;
- bf->bf_lastbf = bf;
- ath_buf_set_rate(sc, bf);
- ath_tx_txqaddbuf(sc, txq, bf_head);
- TX_STAT_INC(txq->axq_qnum, queued);
-}
-
-static void ath_tx_send_normal(struct ath_softc *sc, struct ath_txq *txq,
- struct list_head *bf_head)
-{
- struct ath_buf *bf;
-
- bf = list_first_entry(bf_head, struct ath_buf, list);
+ if (tid)
+ INCR(tid->seq_start, IEEE80211_SEQ_MAX);
bf->bf_lastbf = bf;
- bf->bf_nframes = 1;
- ath_buf_set_rate(sc, bf);
+ fi = get_frame_info(bf->bf_mpdu);
+ ath_buf_set_rate(sc, bf, fi->framelen);
ath_tx_txqaddbuf(sc, txq, bf_head);
TX_STAT_INC(txq->axq_qnum, queued);
}
return htype;
}
-static void assign_aggr_tid_seqno(struct sk_buff *skb,
- struct ath_buf *bf)
+static void setup_frame_info(struct ieee80211_hw *hw, struct sk_buff *skb,
+ int framelen)
{
+ struct ath_softc *sc = hw->priv;
struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
+ struct ieee80211_sta *sta = tx_info->control.sta;
+ struct ieee80211_key_conf *hw_key = tx_info->control.hw_key;
struct ieee80211_hdr *hdr;
+ struct ath_frame_info *fi = get_frame_info(skb);
struct ath_node *an;
struct ath_atx_tid *tid;
- __le16 fc;
- u8 *qc;
+ enum ath9k_key_type keytype;
+ u16 seqno = 0;
+ u8 tidno;
- if (!tx_info->control.sta)
- return;
+ keytype = ath9k_cmn_get_hw_crypto_keytype(skb);
- an = (struct ath_node *)tx_info->control.sta->drv_priv;
hdr = (struct ieee80211_hdr *)skb->data;
- fc = hdr->frame_control;
+ if (sta && ieee80211_is_data_qos(hdr->frame_control) &&
+ conf_is_ht(&hw->conf) && (sc->sc_flags & SC_OP_TXAGGR)) {
+
+ an = (struct ath_node *) sta->drv_priv;
+ tidno = ieee80211_get_qos_ctl(hdr)[0] & IEEE80211_QOS_CTL_TID_MASK;
- if (ieee80211_is_data_qos(fc)) {
- qc = ieee80211_get_qos_ctl(hdr);
- bf->bf_tidno = qc[0] & 0xf;
+ /*
+ * Override seqno set by upper layer with the one
+ * in tx aggregation state.
+ */
+ tid = ATH_AN_2_TID(an, tidno);
+ seqno = tid->seq_next;
+ hdr->seq_ctrl = cpu_to_le16(seqno << IEEE80211_SEQ_SEQ_SHIFT);
+ INCR(tid->seq_next, IEEE80211_SEQ_MAX);
}
- /*
- * For HT capable stations, we save tidno for later use.
- * We also override seqno set by upper layer with the one
- * in tx aggregation state.
- */
- tid = ATH_AN_2_TID(an, bf->bf_tidno);
- hdr->seq_ctrl = cpu_to_le16(tid->seq_next << IEEE80211_SEQ_SEQ_SHIFT);
- bf->bf_seqno = tid->seq_next;
- INCR(tid->seq_next, IEEE80211_SEQ_MAX);
+ memset(fi, 0, sizeof(*fi));
+ if (hw_key)
+ fi->keyix = hw_key->hw_key_idx;
+ else
+ fi->keyix = ATH9K_TXKEYIX_INVALID;
+ fi->keytype = keytype;
+ fi->framelen = framelen;
+ fi->seqno = seqno;
}
-static int setup_tx_flags(struct sk_buff *skb, bool use_ldpc)
+static int setup_tx_flags(struct sk_buff *skb)
{
struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
int flags = 0;
if (tx_info->flags & IEEE80211_TX_CTL_NO_ACK)
flags |= ATH9K_TXDESC_NOACK;
- if (use_ldpc)
+ if (tx_info->flags & IEEE80211_TX_CTL_LDPC)
flags |= ATH9K_TXDESC_LDPC;
return flags;
* width - 0 for 20 MHz, 1 for 40 MHz
* half_gi - to use 4us v/s 3.6 us for symbol time
*/
-static u32 ath_pkt_duration(struct ath_softc *sc, u8 rix, struct ath_buf *bf,
+static u32 ath_pkt_duration(struct ath_softc *sc, u8 rix, int pktlen,
int width, int half_gi, bool shortPreamble)
{
u32 nbits, nsymbits, duration, nsymbols;
- int streams, pktlen;
-
- pktlen = bf_isaggr(bf) ? bf->bf_al : bf->bf_frmlen;
+ int streams;
/* find number of symbols: PLCP + data */
streams = HT_RC_2_STREAMS(rix);
return duration;
}
-static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf)
+u8 ath_txchainmask_reduction(struct ath_softc *sc, u8 chainmask, u32 rate)
+{
+ struct ath_hw *ah = sc->sc_ah;
+ struct ath9k_channel *curchan = ah->curchan;
+ if ((sc->sc_flags & SC_OP_ENABLE_APM) &&
+ (curchan->channelFlags & CHANNEL_5GHZ) &&
+ (chainmask == 0x7) && (rate < 0x90))
+ return 0x3;
+ else
+ return chainmask;
+}
+
+static void ath_buf_set_rate(struct ath_softc *sc, struct ath_buf *bf, int len)
{
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
struct ath9k_11n_rate_series series[4];
rix = rates[i].idx;
series[i].Tries = rates[i].count;
- series[i].ChSel = common->tx_chainmask;
if ((sc->config.ath_aggr_prot && bf_isaggr(bf)) ||
(rates[i].flags & IEEE80211_TX_RC_USE_RTS_CTS)) {
if (rates[i].flags & IEEE80211_TX_RC_MCS) {
/* MCS rates */
series[i].Rate = rix | 0x80;
- series[i].PktDuration = ath_pkt_duration(sc, rix, bf,
+ series[i].ChSel = ath_txchainmask_reduction(sc,
+ common->tx_chainmask, series[i].Rate);
+ series[i].PktDuration = ath_pkt_duration(sc, rix, len,
is_40, is_sgi, is_sp);
if (rix < 8 && (tx_info->flags & IEEE80211_TX_CTL_STBC))
series[i].RateFlags |= ATH9K_RATESERIES_STBC;
continue;
}
- /* legcay rates */
+ /* legacy rates */
if ((tx_info->band == IEEE80211_BAND_2GHZ) &&
!(rate->flags & IEEE80211_RATE_ERP_G))
phy = WLAN_RC_PHY_CCK;
is_sp = false;
}
+ if (bf->bf_state.bfs_paprd)
+ series[i].ChSel = common->tx_chainmask;
+ else
+ series[i].ChSel = ath_txchainmask_reduction(sc,
+ common->tx_chainmask, series[i].Rate);
+
series[i].PktDuration = ath9k_hw_computetxtime(sc->sc_ah,
- phy, rate->bitrate * 100, bf->bf_frmlen, rix, is_sp);
+ phy, rate->bitrate * 100, len, rix, is_sp);
}
/* For AR5416 - RTS cannot be followed by a frame larger than 8K */
- if (bf_isaggr(bf) && (bf->bf_al > sc->sc_ah->caps.rts_aggr_limit))
+ if (bf_isaggr(bf) && (len > sc->sc_ah->caps.rts_aggr_limit))
flags &= ~ATH9K_TXDESC_RTSENA;
/* ATH9K_TXDESC_RTSENA and ATH9K_TXDESC_CTSENA are mutually exclusive. */
ath9k_hw_set11n_burstduration(sc->sc_ah, bf->bf_desc, 8192);
}
-static int ath_tx_setup_buffer(struct ieee80211_hw *hw, struct ath_buf *bf,
- struct sk_buff *skb,
- struct ath_tx_control *txctl)
+static struct ath_buf *ath_tx_setup_buffer(struct ieee80211_hw *hw,
+ struct ath_txq *txq,
+ struct sk_buff *skb)
{
- struct ath_wiphy *aphy = hw->priv;
- struct ath_softc *sc = aphy->sc;
- struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
- int hdrlen;
- __le16 fc;
- int padpos, padsize;
- bool use_ldpc = false;
-
- tx_info->pad[0] = 0;
- switch (txctl->frame_type) {
- case ATH9K_IFT_NOT_INTERNAL:
- break;
- case ATH9K_IFT_PAUSE:
- tx_info->pad[0] |= ATH_TX_INFO_FRAME_TYPE_PAUSE;
- /* fall through */
- case ATH9K_IFT_UNPAUSE:
- tx_info->pad[0] |= ATH_TX_INFO_FRAME_TYPE_INTERNAL;
- break;
- }
- hdrlen = ieee80211_get_hdrlen_from_skb(skb);
- fc = hdr->frame_control;
-
- ATH_TXBUF_RESET(bf);
-
- bf->aphy = aphy;
- bf->bf_frmlen = skb->len + FCS_LEN;
- /* Remove the padding size from bf_frmlen, if any */
- padpos = ath9k_cmn_padpos(hdr->frame_control);
- padsize = padpos & 3;
- if (padsize && skb->len>padpos+padsize) {
- bf->bf_frmlen -= padsize;
- }
-
- 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);
+ struct ath_softc *sc = hw->priv;
+ struct ath_hw *ah = sc->sc_ah;
+ struct ath_common *common = ath9k_hw_common(sc->sc_ah);
+ struct ath_frame_info *fi = get_frame_info(skb);
+ struct ath_buf *bf;
+ struct ath_desc *ds;
+ int frm_type;
- bf->bf_keytype = ath9k_cmn_get_hw_crypto_keytype(skb);
- if (bf->bf_keytype != ATH9K_KEY_TYPE_CLEAR) {
- bf->bf_frmlen += tx_info->control.hw_key->icv_len;
- bf->bf_keyix = tx_info->control.hw_key->hw_key_idx;
- } else {
- bf->bf_keyix = ATH9K_TXKEYIX_INVALID;
+ bf = ath_tx_get_buffer(sc);
+ if (!bf) {
+ ath_dbg(common, ATH_DBG_XMIT, "TX buffers are full\n");
+ return NULL;
}
- if (ieee80211_is_data_qos(fc) && bf_isht(bf) &&
- (sc->sc_flags & SC_OP_TXAGGR))
- assign_aggr_tid_seqno(skb, bf);
+ ATH_TXBUF_RESET(bf);
+ bf->bf_flags = setup_tx_flags(skb);
bf->bf_mpdu = skb;
bf->bf_buf_addr = dma_map_single(sc->dev, skb->data,
if (unlikely(dma_mapping_error(sc->dev, bf->bf_buf_addr))) {
bf->bf_mpdu = NULL;
bf->bf_buf_addr = 0;
- ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_FATAL,
- "dma_mapping_error() on TX\n");
- return -ENOMEM;
+ ath_err(ath9k_hw_common(sc->sc_ah),
+ "dma_mapping_error() on TX\n");
+ ath_tx_return_buffer(sc, bf);
+ return NULL;
}
- bf->bf_tx_aborted = false;
-
- return 0;
-}
-
-/* FIXME: tx power */
-static void ath_tx_start_dma(struct ath_softc *sc, struct ath_buf *bf,
- struct ath_tx_control *txctl)
-{
- struct sk_buff *skb = bf->bf_mpdu;
- struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
- struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
- struct ath_node *an = NULL;
- struct list_head bf_head;
- struct ath_desc *ds;
- struct ath_atx_tid *tid;
- struct ath_hw *ah = sc->sc_ah;
- int frm_type;
- __le16 fc;
-
frm_type = get_hw_packet_type(skb);
- fc = hdr->frame_control;
-
- INIT_LIST_HEAD(&bf_head);
- list_add_tail(&bf->list, &bf_head);
ds = bf->bf_desc;
ath9k_hw_set_desc_link(ah, ds, 0);
- ath9k_hw_set11n_txdesc(ah, ds, bf->bf_frmlen, frm_type, MAX_RATE_POWER,
- bf->bf_keyix, bf->bf_keytype, bf->bf_flags);
+ ath9k_hw_set11n_txdesc(ah, ds, fi->framelen, frm_type, MAX_RATE_POWER,
+ fi->keyix, fi->keytype, bf->bf_flags);
ath9k_hw_filltxdesc(ah, ds,
skb->len, /* segment length */
true, /* last segment */
ds, /* first descriptor */
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) &&
- tx_info->control.sta) {
- an = (struct ath_node *)tx_info->control.sta->drv_priv;
- tid = ATH_AN_2_TID(an, bf->bf_tidno);
+ txq->axq_qnum);
- if (!ieee80211_is_data_qos(fc)) {
- ath_tx_send_normal(sc, txctl->txq, &bf_head);
- goto tx_done;
- }
- if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) {
- /*
- * Try aggregation if it's a unicast data frame
- * and the destination is HT capable.
- */
- ath_tx_send_ampdu(sc, tid, &bf_head, txctl);
- } else {
- /*
- * Send this frame as regular when ADDBA
- * exchange is neither complete nor pending.
- */
- ath_tx_send_ht_normal(sc, txctl->txq,
- tid, &bf_head);
- }
- } else {
- ath_tx_send_normal(sc, txctl->txq, &bf_head);
- }
-
-tx_done:
- spin_unlock_bh(&txctl->txq->axq_lock);
+ return bf;
}
-/* Upon failure caller should free skb */
-int ath_tx_start(struct ieee80211_hw *hw, struct sk_buff *skb,
- struct ath_tx_control *txctl)
+/* FIXME: tx power */
+static void ath_tx_start_dma(struct ath_softc *sc, struct ath_buf *bf,
+ struct ath_tx_control *txctl)
{
- 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 q, r;
+ struct sk_buff *skb = bf->bf_mpdu;
+ struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
+ struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
+ struct list_head bf_head;
+ struct ath_atx_tid *tid = NULL;
+ u8 tidno;
- bf = ath_tx_get_buffer(sc);
- if (!bf) {
- ath_print(common, ATH_DBG_XMIT, "TX buffers are full\n");
- return -1;
- }
+ spin_lock_bh(&txctl->txq->axq_lock);
- r = ath_tx_setup_buffer(hw, bf, skb, txctl);
- if (unlikely(r)) {
- ath_print(common, ATH_DBG_FATAL, "TX mem alloc failure\n");
+ if (ieee80211_is_data_qos(hdr->frame_control) && txctl->an) {
+ tidno = ieee80211_get_qos_ctl(hdr)[0] &
+ IEEE80211_QOS_CTL_TID_MASK;
+ tid = ATH_AN_2_TID(txctl->an, tidno);
- /* upon ath_tx_processq() this TX queue will be resumed, we
- * guarantee this will happen by knowing beforehand that
- * we will at least have to run TX completionon one buffer
- * on the queue */
- spin_lock_bh(&txq->axq_lock);
- if (!txq->stopped && txq->axq_depth > 1) {
- ath_mac80211_stop_queue(sc, skb_get_queue_mapping(skb));
- txq->stopped = 1;
- }
- spin_unlock_bh(&txq->axq_lock);
+ WARN_ON(tid->ac->txq != txctl->txq);
+ }
- ath_tx_return_buffer(sc, bf);
+ if ((tx_info->flags & IEEE80211_TX_CTL_AMPDU) && tid) {
+ /*
+ * Try aggregation if it's a unicast data frame
+ * and the destination is HT capable.
+ */
+ ath_tx_send_ampdu(sc, tid, bf, txctl);
+ } else {
+ INIT_LIST_HEAD(&bf_head);
+ list_add_tail(&bf->list, &bf_head);
- return r;
- }
+ bf->bf_state.bfs_ftype = txctl->frame_type;
+ bf->bf_state.bfs_paprd = txctl->paprd;
- q = skb_get_queue_mapping(skb);
- if (q >= 4)
- q = 0;
+ if (bf->bf_state.bfs_paprd)
+ ar9003_hw_set_paprd_txdesc(sc->sc_ah, bf->bf_desc,
+ bf->bf_state.bfs_paprd);
- 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;
+ ath_tx_send_normal(sc, txctl->txq, tid, &bf_head);
}
- spin_unlock_bh(&txq->axq_lock);
-
- ath_tx_start_dma(sc, bf, txctl);
- return 0;
+ spin_unlock_bh(&txctl->txq->axq_lock);
}
-void ath_tx_cabq(struct ieee80211_hw *hw, struct sk_buff *skb)
+/* Upon failure caller should free skb */
+int ath_tx_start(struct ieee80211_hw *hw, struct sk_buff *skb,
+ struct ath_tx_control *txctl)
{
- struct ath_wiphy *aphy = hw->priv;
- struct ath_softc *sc = aphy->sc;
- struct ath_common *common = ath9k_hw_common(sc->sc_ah);
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
- int padpos, padsize;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
- struct ath_tx_control txctl;
+ struct ieee80211_sta *sta = info->control.sta;
+ struct ath_softc *sc = hw->priv;
+ struct ath_txq *txq = txctl->txq;
+ struct ath_buf *bf;
+ int padpos, padsize;
+ int frmlen = skb->len + FCS_LEN;
+ int q;
- memset(&txctl, 0, sizeof(struct ath_tx_control));
+ /* NOTE: sta can be NULL according to net/mac80211.h */
+ if (sta)
+ txctl->an = (struct ath_node *)sta->drv_priv;
+
+ if (info->control.hw_key)
+ frmlen += info->control.hw_key->icv_len;
/*
* As a temporary workaround, assign seq# here; this will likely need
/* Add the padding after the header if this is not already done */
padpos = ath9k_cmn_padpos(hdr->frame_control);
padsize = padpos & 3;
- if (padsize && skb->len>padpos) {
- if (skb_headroom(skb) < padsize) {
- ath_print(common, ATH_DBG_XMIT,
- "TX CABQ padding failed\n");
- dev_kfree_skb_any(skb);
- return;
- }
+ if (padsize && skb->len > padpos) {
+ if (skb_headroom(skb) < padsize)
+ return -ENOMEM;
+
skb_push(skb, padsize);
memmove(skb->data, skb->data + padsize, padpos);
}
- txctl.txq = sc->beacon.cabq;
+ setup_frame_info(hw, skb, frmlen);
- ath_print(common, ATH_DBG_XMIT,
- "transmitting CABQ packet, skb: %p\n", skb);
+ /*
+ * At this point, the vif, hw_key and sta pointers in the tx control
+ * info are no longer valid (overwritten by the ath_frame_info data.
+ */
+
+ bf = ath_tx_setup_buffer(hw, txctl->txq, skb);
+ if (unlikely(!bf))
+ return -ENOMEM;
- if (ath_tx_start(hw, skb, &txctl) != 0) {
- ath_print(common, ATH_DBG_XMIT, "CABQ TX failed\n");
- goto exit;
+ q = skb_get_queue_mapping(skb);
+ spin_lock_bh(&txq->axq_lock);
+ if (txq == sc->tx.txq_map[q] &&
+ ++txq->pending_frames > ATH_MAX_QDEPTH && !txq->stopped) {
+ ieee80211_stop_queue(sc->hw, q);
+ txq->stopped = 1;
}
+ spin_unlock_bh(&txq->axq_lock);
- return;
-exit:
- dev_kfree_skb_any(skb);
+ ath_tx_start_dma(sc, bf, txctl);
+
+ return 0;
}
/*****************/
/*****************/
static void ath_tx_complete(struct ath_softc *sc, struct sk_buff *skb,
- struct ath_wiphy *aphy, int tx_flags)
+ int tx_flags, int ftype, struct ath_txq *txq)
{
struct ieee80211_hw *hw = sc->hw;
struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
struct ieee80211_hdr * hdr = (struct ieee80211_hdr *)skb->data;
int q, padpos, padsize;
- ath_print(common, ATH_DBG_XMIT, "TX complete: skb: %p\n", skb);
-
- if (aphy)
- hw = aphy->hw;
+ ath_dbg(common, ATH_DBG_XMIT, "TX complete: skb: %p\n", skb);
if (tx_flags & ATH_TX_BAR)
tx_info->flags |= IEEE80211_TX_STAT_AMPDU_NO_BACK;
if (sc->ps_flags & PS_WAIT_FOR_TX_ACK) {
sc->ps_flags &= ~PS_WAIT_FOR_TX_ACK;
- ath_print(common, ATH_DBG_PS,
- "Going back to sleep after having "
- "received TX status (0x%lx)\n",
+ ath_dbg(common, ATH_DBG_PS,
+ "Going back to sleep after having received TX status (0x%lx)\n",
sc->ps_flags & (PS_WAIT_FOR_BEACON |
PS_WAIT_FOR_CAB |
PS_WAIT_FOR_PSPOLL_DATA |
PS_WAIT_FOR_TX_ACK));
}
- if (unlikely(tx_info->pad[0] & ATH_TX_INFO_FRAME_TYPE_INTERNAL))
- ath9k_tx_status(hw, skb);
- 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;
+ q = skb_get_queue_mapping(skb);
+ if (txq == sc->tx.txq_map[q]) {
+ spin_lock_bh(&txq->axq_lock);
+ if (WARN_ON(--txq->pending_frames < 0))
+ txq->pending_frames = 0;
- ieee80211_tx_status(hw, skb);
+ if (txq->stopped && txq->pending_frames < ATH_MAX_QDEPTH) {
+ ieee80211_wake_queue(sc->hw, q);
+ txq->stopped = 0;
+ }
+ spin_unlock_bh(&txq->axq_lock);
}
+
+ ieee80211_tx_status(hw, skb);
}
static void ath_tx_complete_buf(struct ath_softc *sc, struct ath_buf *bf,
bf->bf_buf_addr = 0;
if (bf->bf_state.bfs_paprd) {
- if (time_after(jiffies,
- bf->bf_state.bfs_paprd_timestamp +
- msecs_to_jiffies(ATH_PAPRD_TIMEOUT)))
+ if (!sc->paprd_pending)
dev_kfree_skb_any(skb);
else
complete(&sc->paprd_complete);
} else {
- ath_debug_stat_tx(sc, txq, bf, ts);
- ath_tx_complete(sc, skb, bf->aphy, tx_flags);
+ ath_debug_stat_tx(sc, bf, ts, txq);
+ ath_tx_complete(sc, skb, tx_flags,
+ bf->bf_state.bfs_ftype, txq);
}
/* At this point, skb (bf->bf_mpdu) is consumed...make sure we don't
* accidentally reference it later.
spin_unlock_irqrestore(&sc->tx.txbuflock, flags);
}
-static int ath_tx_num_badfrms(struct ath_softc *sc, struct ath_buf *bf,
- struct ath_tx_status *ts, int txok)
-{
- u16 seq_st = 0;
- u32 ba[WME_BA_BMP_SIZE >> 5];
- int ba_index;
- int nbad = 0;
- int isaggr = 0;
-
- if (bf->bf_lastbf->bf_tx_aborted)
- return 0;
-
- isaggr = bf_isaggr(bf);
- if (isaggr) {
- seq_st = ts->ts_seqnum;
- memcpy(ba, &ts->ba_low, WME_BA_BMP_SIZE >> 3);
- }
-
- while (bf) {
- ba_index = ATH_BA_INDEX(seq_st, bf->bf_seqno);
- if (!txok || (isaggr && !ATH_BA_ISSET(ba, ba_index)))
- nbad++;
-
- bf = bf->bf_next;
- }
-
- return nbad;
-}
-
-static void ath_tx_rc_status(struct ath_buf *bf, struct ath_tx_status *ts,
- int nbad, int txok, bool update_rc)
+static void ath_tx_rc_status(struct ath_softc *sc, struct ath_buf *bf,
+ struct ath_tx_status *ts, int nframes, int nbad,
+ int txok, bool update_rc)
{
struct sk_buff *skb = bf->bf_mpdu;
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
- struct ieee80211_hw *hw = bf->aphy->hw;
+ struct ieee80211_hw *hw = sc->hw;
+ struct ath_hw *ah = sc->sc_ah;
u8 i, tx_rateindex;
if (txok)
if ((tx_info->flags & IEEE80211_TX_CTL_AMPDU) && update_rc) {
tx_info->flags |= IEEE80211_TX_STAT_AMPDU;
- BUG_ON(nbad > bf->bf_nframes);
+ BUG_ON(nbad > nframes);
- tx_info->status.ampdu_len = bf->bf_nframes;
- tx_info->status.ampdu_ack_len = bf->bf_nframes - nbad;
+ tx_info->status.ampdu_len = nframes;
+ tx_info->status.ampdu_ack_len = nframes - nbad;
}
if ((ts->ts_status & ATH9K_TXERR_FILT) == 0 &&
(bf->bf_flags & ATH9K_TXDESC_NOACK) == 0 && update_rc) {
- if (ieee80211_is_data(hdr->frame_control)) {
- if (ts->ts_flags &
- (ATH9K_TX_DATA_UNDERRUN | ATH9K_TX_DELIM_UNDERRUN))
- tx_info->pad[0] |= ATH_TX_INFO_UNDERRUN;
- if ((ts->ts_status & ATH9K_TXERR_XRETRY) ||
- (ts->ts_status & ATH9K_TXERR_FIFO))
- tx_info->pad[0] |= ATH_TX_INFO_XRETRY;
- }
+ /*
+ * If an underrun error is seen assume it as an excessive
+ * retry only if max frame trigger level has been reached
+ * (2 KB for single stream, and 4 KB for dual stream).
+ * Adjust the long retry as if the frame was tried
+ * hw->max_rate_tries times to affect how rate control updates
+ * PER for the failed rate.
+ * In case of congestion on the bus penalizing this type of
+ * underruns should help hardware actually transmit new frames
+ * successfully by eventually preferring slower rates.
+ * This itself should also alleviate congestion on the bus.
+ */
+ if (ieee80211_is_data(hdr->frame_control) &&
+ (ts->ts_flags & (ATH9K_TX_DATA_UNDERRUN |
+ ATH9K_TX_DELIM_UNDERRUN)) &&
+ ah->tx_trig_level >= sc->sc_ah->caps.tx_triglevel_max)
+ tx_info->status.rates[tx_rateindex].count =
+ hw->max_rate_tries;
}
for (i = tx_rateindex + 1; i < hw->max_rates; i++) {
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.pending_frames[qnum] < ATH_MAX_QDEPTH) {
- if (ath_mac80211_start_queue(sc, qnum))
- txq->stopped = 0;
- }
- spin_unlock_bh(&txq->axq_lock);
-}
-
static void ath_tx_processq(struct ath_softc *sc, struct ath_txq *txq)
{
struct ath_hw *ah = sc->sc_ah;
int txok;
int status;
- ath_print(common, ATH_DBG_QUEUE, "tx queue %d (%x), link %p\n",
- txq->axq_qnum, ath9k_hw_gettxbuf(sc->sc_ah, txq->axq_qnum),
- txq->axq_link);
+ ath_dbg(common, ATH_DBG_QUEUE, "tx queue %d (%x), link %p\n",
+ txq->axq_qnum, ath9k_hw_gettxbuf(sc->sc_ah, txq->axq_qnum),
+ txq->axq_link);
for (;;) {
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;
}
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,
txq->axq_tx_inprogress = false;
if (bf_held)
list_del(&bf_held->list);
+
+ if (bf_is_ampdu_not_probing(bf))
+ txq->axq_ampdu_depth--;
spin_unlock_bh(&txq->axq_lock);
if (bf_held)
*/
if (ts.ts_status & ATH9K_TXERR_XRETRY)
bf->bf_state.bf_type |= BUF_XRETRY;
- ath_tx_rc_status(bf, &ts, txok ? 0 : 1, txok, true);
+ ath_tx_rc_status(sc, bf, &ts, 1, txok ? 0 : 1, txok, true);
}
if (bf_isampdu(bf))
- ath_tx_complete_aggr(sc, txq, bf, &bf_head, &ts, txok);
+ ath_tx_complete_aggr(sc, txq, bf, &bf_head, &ts, txok,
+ true);
else
ath_tx_complete_buf(sc, bf, txq, &bf_head, &ts, txok, 0);
- ath_wake_mac80211_queue(sc, txq);
-
spin_lock_bh(&txq->axq_lock);
+
if (sc->sc_flags & SC_OP_TXAGGR)
ath_txq_schedule(sc, txq);
spin_unlock_bh(&txq->axq_lock);
}
}
+static void ath_hw_pll_work(struct work_struct *work)
+{
+ struct ath_softc *sc = container_of(work, struct ath_softc,
+ hw_pll_work.work);
+ static int count;
+
+ if (AR_SREV_9485(sc->sc_ah)) {
+ if (ar9003_get_pll_sqsum_dvc(sc->sc_ah) >= 0x40000) {
+ count++;
+
+ if (count == 3) {
+ /* Rx is hung for more than 500ms. Reset it */
+ ath_reset(sc, true);
+ count = 0;
+ }
+ } else
+ count = 0;
+
+ ieee80211_queue_delayed_work(sc->hw, &sc->hw_pll_work, HZ/5);
+ }
+}
+
static void ath_tx_complete_poll_work(struct work_struct *work)
{
struct ath_softc *sc = container_of(work, struct ath_softc,
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)) {
} 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_txq_schedule(sc, txq);
+ }
}
spin_unlock_bh(&txq->axq_lock);
}
if (needreset) {
- ath_print(ath9k_hw_common(sc->sc_ah), ATH_DBG_RESET,
- "tx hung, resetting the chip\n");
- ath9k_ps_wakeup(sc);
+ ath_dbg(ath9k_hw_common(sc->sc_ah), ATH_DBG_RESET,
+ "tx hung, resetting the chip\n");
ath_reset(sc, true);
- ath9k_ps_restore(sc);
}
ieee80211_queue_delayed_work(sc->hw, &sc->tx_complete_work,
if (status == -EINPROGRESS)
break;
if (status == -EIO) {
- ath_print(common, ATH_DBG_XMIT,
- "Error processing tx status\n");
+ ath_dbg(common, ATH_DBG_XMIT,
+ "Error processing tx status\n");
break;
}
INCR(txq->txq_tailidx, ATH_TXFIFO_DEPTH);
txq->axq_depth--;
txq->axq_tx_inprogress = false;
+ if (bf_is_ampdu_not_probing(bf))
+ txq->axq_ampdu_depth--;
spin_unlock_bh(&txq->axq_lock);
txok = !(txs.ts_status & ATH9K_TXERR_MASK);
if (!bf_isampdu(bf)) {
if (txs.ts_status & ATH9K_TXERR_XRETRY)
bf->bf_state.bf_type |= BUF_XRETRY;
- ath_tx_rc_status(bf, &txs, txok ? 0 : 1, txok, true);
+ ath_tx_rc_status(sc, bf, &txs, 1, txok ? 0 : 1, txok, true);
}
if (bf_isampdu(bf))
- ath_tx_complete_aggr(sc, txq, bf, &bf_head, &txs, txok);
+ ath_tx_complete_aggr(sc, txq, bf, &bf_head, &txs,
+ txok, true);
else
ath_tx_complete_buf(sc, bf, txq, &bf_head,
&txs, txok, 0);
- ath_wake_mac80211_queue(sc, txq);
-
spin_lock_bh(&txq->axq_lock);
+
if (!list_empty(&txq->txq_fifo_pending)) {
INIT_LIST_HEAD(&bf_head);
bf = list_first_entry(&txq->txq_fifo_pending,
error = ath_descdma_setup(sc, &sc->tx.txdma, &sc->tx.txbuf,
"tx", nbufs, 1, 1);
if (error != 0) {
- ath_print(common, ATH_DBG_FATAL,
- "Failed to allocate tx descriptors: %d\n", error);
+ ath_err(common,
+ "Failed to allocate tx descriptors: %d\n", error);
goto err;
}
error = ath_descdma_setup(sc, &sc->beacon.bdma, &sc->beacon.bbuf,
"beacon", ATH_BCBUF, 1, 1);
if (error != 0) {
- ath_print(common, ATH_DBG_FATAL,
- "Failed to allocate beacon descriptors: %d\n", error);
+ ath_err(common,
+ "Failed to allocate beacon descriptors: %d\n", error);
goto err;
}
INIT_DELAYED_WORK(&sc->tx_complete_work, ath_tx_complete_poll_work);
+ INIT_DELAYED_WORK(&sc->hw_pll_work, ath_hw_pll_work);
if (sc->sc_ah->caps.hw_caps & ATH9K_HW_CAP_EDMA) {
error = ath_tx_edma_init(sc);
for (acno = 0, ac = &an->ac[acno];
acno < WME_NUM_AC; acno++, ac++) {
ac->sched = false;
- ac->qnum = sc->tx.hwq_map[acno];
+ ac->txq = sc->tx.txq_map[acno];
INIT_LIST_HEAD(&ac->tid_q);
}
}
struct ath_atx_ac *ac;
struct ath_atx_tid *tid;
struct ath_txq *txq;
- int i, tidno;
+ int tidno;
for (tidno = 0, tid = &an->tid[tidno];
tidno < WME_NUM_TID; tidno++, tid++) {
- i = tid->ac->qnum;
- if (!ATH_TXQ_SETUP(sc, i))
- continue;
-
- txq = &sc->tx.txq[i];
ac = tid->ac;
+ txq = ac->txq;
spin_lock_bh(&txq->axq_lock);
git.openpandora.org / pandora-kernel.git / blobdiff