struct ath_txq *txq,
struct ath_atx_tid *tid,
struct sk_buff *skb);
+static int ath_tx_prepare(struct ieee80211_hw *hw, struct sk_buff *skb,
+ struct ath_tx_control *txctl);
enum {
MCS_HT20,
list_add_tail(&tid->list, list);
}
+void ath9k_wake_tx_queue(struct ieee80211_hw *hw, struct ieee80211_txq *queue)
+{
+ struct ath_softc *sc = hw->priv;
+ struct ath_common *common = ath9k_hw_common(sc->sc_ah);
+ struct ath_atx_tid *tid = (struct ath_atx_tid *) queue->drv_priv;
+ struct ath_txq *txq = tid->txq;
+
+ ath_dbg(common, QUEUE, "Waking TX queue: %pM (%d)\n",
+ queue->sta ? queue->sta->addr : queue->vif->addr,
+ tid->tidno);
+
+ ath_txq_lock(sc, txq);
+
+ tid->has_queued = true;
+ ath_tx_queue_tid(sc, txq, tid);
+ ath_txq_schedule(sc, txq);
+
+ ath_txq_unlock(sc, txq);
+}
+
static struct ath_frame_info *get_frame_info(struct sk_buff *skb)
{
struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
static void ath_txq_skb_done(struct ath_softc *sc, struct ath_txq *txq,
struct sk_buff *skb)
{
- struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct ath_frame_info *fi = get_frame_info(skb);
int q = fi->txq;
if (WARN_ON(--txq->pending_frames < 0))
txq->pending_frames = 0;
- if (txq->stopped &&
- txq->pending_frames < sc->tx.txq_max_pending[q]) {
- if (ath9k_is_chanctx_enabled())
- ieee80211_wake_queue(sc->hw, info->hw_queue);
- else
- ieee80211_wake_queue(sc->hw, q);
- txq->stopped = false;
- }
}
static struct ath_atx_tid *
return ATH_AN_2_TID(an, tidno);
}
+static struct sk_buff *
+ath_tid_pull(struct ath_atx_tid *tid)
+{
+ struct ieee80211_txq *txq = container_of((void*)tid, struct ieee80211_txq, drv_priv);
+ struct ath_softc *sc = tid->an->sc;
+ struct ieee80211_hw *hw = sc->hw;
+ struct ath_tx_control txctl = {
+ .txq = tid->txq,
+ .sta = tid->an->sta,
+ };
+ struct sk_buff *skb;
+ struct ath_frame_info *fi;
+ int q;
+
+ if (!tid->has_queued)
+ return NULL;
+
+ skb = ieee80211_tx_dequeue(hw, txq);
+ if (!skb) {
+ tid->has_queued = false;
+ return NULL;
+ }
+
+ if (ath_tx_prepare(hw, skb, &txctl)) {
+ ieee80211_free_txskb(hw, skb);
+ return NULL;
+ }
+
+ q = skb_get_queue_mapping(skb);
+ if (tid->txq == sc->tx.txq_map[q]) {
+ fi = get_frame_info(skb);
+ fi->txq = q;
+ ++tid->txq->pending_frames;
+ }
+
+ return skb;
+ }
+
+
static bool ath_tid_has_buffered(struct ath_atx_tid *tid)
{
- return !skb_queue_empty(&tid->buf_q) || !skb_queue_empty(&tid->retry_q);
+ return !skb_queue_empty(&tid->retry_q) || tid->has_queued;
}
static struct sk_buff *ath_tid_dequeue(struct ath_atx_tid *tid)
skb = __skb_dequeue(&tid->retry_q);
if (!skb)
- skb = __skb_dequeue(&tid->buf_q);
+ skb = ath_tid_pull(tid);
return skb;
}
-/*
- * ath_tx_tid_change_state:
- * - clears a-mpdu flag of previous session
- * - force sequence number allocation to fix next BlockAck Window
- */
-static void
-ath_tx_tid_change_state(struct ath_softc *sc, struct ath_atx_tid *tid)
-{
- struct ath_txq *txq = tid->txq;
- struct ieee80211_tx_info *tx_info;
- struct sk_buff *skb, *tskb;
- struct ath_buf *bf;
- struct ath_frame_info *fi;
-
- skb_queue_walk_safe(&tid->buf_q, skb, tskb) {
- fi = get_frame_info(skb);
- bf = fi->bf;
-
- tx_info = IEEE80211_SKB_CB(skb);
- tx_info->flags &= ~IEEE80211_TX_CTL_AMPDU;
-
- if (bf)
- continue;
-
- bf = ath_tx_setup_buffer(sc, txq, tid, skb);
- if (!bf) {
- __skb_unlink(skb, &tid->buf_q);
- ath_txq_skb_done(sc, txq, skb);
- ieee80211_free_txskb(sc->hw, skb);
- continue;
- }
- }
-
-}
-
static void ath_tx_flush_tid(struct ath_softc *sc, struct ath_atx_tid *tid)
{
struct ath_txq *txq = tid->txq;
static struct ath_buf *
ath_tx_get_tid_subframe(struct ath_softc *sc, struct ath_txq *txq,
- struct ath_atx_tid *tid, struct sk_buff_head **q)
+ struct ath_atx_tid *tid)
{
struct ieee80211_tx_info *tx_info;
struct ath_frame_info *fi;
- struct sk_buff *skb;
+ struct sk_buff *skb, *first_skb = NULL;
struct ath_buf *bf;
u16 seqno;
while (1) {
- *q = &tid->retry_q;
- if (skb_queue_empty(*q))
- *q = &tid->buf_q;
-
- skb = skb_peek(*q);
+ skb = ath_tid_dequeue(tid);
if (!skb)
break;
bf->bf_state.stale = false;
if (!bf) {
- __skb_unlink(skb, *q);
ath_txq_skb_done(sc, txq, skb);
ieee80211_free_txskb(sc->hw, skb);
continue;
seqno = bf->bf_state.seqno;
/* do not step over block-ack window */
- if (!BAW_WITHIN(tid->seq_start, tid->baw_size, seqno))
+ if (!BAW_WITHIN(tid->seq_start, tid->baw_size, seqno)) {
+ __skb_queue_tail(&tid->retry_q, skb);
+
+ /* If there are other skbs in the retry q, they are
+ * probably within the BAW, so loop immediately to get
+ * one of them. Otherwise the queue can get stuck. */
+ if (!skb_queue_is_first(&tid->retry_q, skb) &&
+ !WARN_ON(skb == first_skb)) {
+ if(!first_skb) /* infinite loop prevention */
+ first_skb = skb;
+ continue;
+ }
break;
+ }
if (tid->bar_index > ATH_BA_INDEX(tid->seq_start, seqno)) {
struct ath_tx_status ts = {};
INIT_LIST_HEAD(&bf_head);
list_add(&bf->list, &bf_head);
- __skb_unlink(skb, *q);
ath_tx_update_baw(sc, tid, seqno);
ath_tx_complete_buf(sc, bf, txq, &bf_head, NULL, &ts, 0);
continue;
return NULL;
}
-static bool
+static int
ath_tx_form_aggr(struct ath_softc *sc, struct ath_txq *txq,
struct ath_atx_tid *tid, struct list_head *bf_q,
- struct ath_buf *bf_first, struct sk_buff_head *tid_q,
- int *aggr_len)
+ struct ath_buf *bf_first)
{
#define PADBYTES(_len) ((4 - ((_len) % 4)) % 4)
struct ath_buf *bf = bf_first, *bf_prev = NULL;
struct ieee80211_tx_info *tx_info;
struct ath_frame_info *fi;
struct sk_buff *skb;
- bool closed = false;
+
bf = bf_first;
aggr_limit = ath_lookup_rate(sc, bf, tid);
- do {
+ while (bf)
+ {
skb = bf->bf_mpdu;
fi = get_frame_info(skb);
if (nframes) {
if (aggr_limit < al + bpad + al_delta ||
ath_lookup_legacy(bf) || nframes >= h_baw)
- break;
+ goto stop;
tx_info = IEEE80211_SKB_CB(bf->bf_mpdu);
if ((tx_info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE) ||
!(tx_info->flags & IEEE80211_TX_CTL_AMPDU))
- break;
+ goto stop;
}
/* add padding for previous frame to aggregation length */
ath_tx_addto_baw(sc, tid, bf);
bf->bf_state.ndelim = ndelim;
- __skb_unlink(skb, tid_q);
list_add_tail(&bf->list, bf_q);
if (bf_prev)
bf_prev->bf_next = bf;
bf_prev = bf;
- bf = ath_tx_get_tid_subframe(sc, txq, tid, &tid_q);
- if (!bf) {
- closed = true;
- break;
- }
- } while (ath_tid_has_buffered(tid));
-
+ bf = ath_tx_get_tid_subframe(sc, txq, tid);
+ }
+ goto finish;
+stop:
+ __skb_queue_tail(&tid->retry_q, bf->bf_mpdu);
+finish:
bf = bf_first;
bf->bf_lastbf = bf_prev;
TX_STAT_INC(txq->axq_qnum, a_aggr);
}
- *aggr_len = al;
-
- return closed;
+ return al;
#undef PADBYTES
}
static void
ath_tx_form_burst(struct ath_softc *sc, struct ath_txq *txq,
struct ath_atx_tid *tid, struct list_head *bf_q,
- struct ath_buf *bf_first, struct sk_buff_head *tid_q)
+ struct ath_buf *bf_first)
{
struct ath_buf *bf = bf_first, *bf_prev = NULL;
- struct sk_buff *skb;
int nframes = 0;
do {
struct ieee80211_tx_info *tx_info;
- skb = bf->bf_mpdu;
nframes++;
- __skb_unlink(skb, tid_q);
list_add_tail(&bf->list, bf_q);
if (bf_prev)
bf_prev->bf_next = bf;
if (nframes >= 2)
break;
- bf = ath_tx_get_tid_subframe(sc, txq, tid, &tid_q);
+ bf = ath_tx_get_tid_subframe(sc, txq, tid);
if (!bf)
break;
tx_info = IEEE80211_SKB_CB(bf->bf_mpdu);
- if (tx_info->flags & IEEE80211_TX_CTL_AMPDU)
+ if (tx_info->flags & IEEE80211_TX_CTL_AMPDU) {
+ __skb_queue_tail(&tid->retry_q, bf->bf_mpdu);
break;
+ }
ath_set_rates(tid->an->vif, tid->an->sta, bf);
} while (1);
{
struct ath_buf *bf;
struct ieee80211_tx_info *tx_info;
- struct sk_buff_head *tid_q;
struct list_head bf_q;
int aggr_len = 0;
- bool aggr, last = true;
+ bool aggr;
if (!ath_tid_has_buffered(tid))
return false;
INIT_LIST_HEAD(&bf_q);
- bf = ath_tx_get_tid_subframe(sc, txq, tid, &tid_q);
+ bf = ath_tx_get_tid_subframe(sc, txq, tid);
if (!bf)
return false;
tx_info = IEEE80211_SKB_CB(bf->bf_mpdu);
aggr = !!(tx_info->flags & IEEE80211_TX_CTL_AMPDU);
if ((aggr && txq->axq_ampdu_depth >= ATH_AGGR_MIN_QDEPTH) ||
- (!aggr && txq->axq_depth >= ATH_NON_AGGR_MIN_QDEPTH)) {
+ (!aggr && txq->axq_depth >= ATH_NON_AGGR_MIN_QDEPTH)) {
+ __skb_queue_tail(&tid->retry_q, bf->bf_mpdu);
*stop = true;
return false;
}
ath_set_rates(tid->an->vif, tid->an->sta, bf);
if (aggr)
- last = ath_tx_form_aggr(sc, txq, tid, &bf_q, bf,
- tid_q, &aggr_len);
+ aggr_len = ath_tx_form_aggr(sc, txq, tid, &bf_q, bf);
else
- ath_tx_form_burst(sc, txq, tid, &bf_q, bf, tid_q);
+ ath_tx_form_burst(sc, txq, tid, &bf_q, bf);
if (list_empty(&bf_q))
return false;
an->mpdudensity = density;
}
- /* force sequence number allocation for pending frames */
- ath_tx_tid_change_state(sc, txtid);
-
txtid->active = true;
*ssn = txtid->seq_start = txtid->seq_next;
txtid->bar_index = -1;
ath_txq_lock(sc, txq);
txtid->active = false;
ath_tx_flush_tid(sc, txtid);
- ath_tx_tid_change_state(sc, txtid);
ath_txq_unlock_complete(sc, txq);
}
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
struct ath_atx_tid *tid;
struct ath_txq *txq;
- bool buffered;
int tidno;
ath_dbg(common, XMIT, "%s called\n", __func__);
- for (tidno = 0, tid = &an->tid[tidno];
- tidno < IEEE80211_NUM_TIDS; tidno++, tid++) {
-
+ for (tidno = 0; tidno < IEEE80211_NUM_TIDS; tidno++) {
+ tid = ath_node_to_tid(an, tidno);
txq = tid->txq;
ath_txq_lock(sc, txq);
continue;
}
- buffered = ath_tid_has_buffered(tid);
+ if (!skb_queue_empty(&tid->retry_q))
+ ieee80211_sta_set_buffered(sta, tid->tidno, true);
list_del_init(&tid->list);
ath_txq_unlock(sc, txq);
-
- ieee80211_sta_set_buffered(sta, tidno, buffered);
}
}
ath_dbg(common, XMIT, "%s called\n", __func__);
- for (tidno = 0, tid = &an->tid[tidno];
- tidno < IEEE80211_NUM_TIDS; tidno++, tid++) {
-
+ for (tidno = 0; tidno < IEEE80211_NUM_TIDS; tidno++) {
+ tid = ath_node_to_tid(an, tidno);
txq = tid->txq;
ath_txq_lock(sc, txq);
tid->clear_ps_filter = true;
-
if (ath_tid_has_buffered(tid)) {
ath_tx_queue_tid(sc, txq, tid);
ath_txq_schedule(sc, txq);
}
-
ath_txq_unlock_complete(sc, txq);
}
}
-void ath_tx_aggr_resume(struct ath_softc *sc, struct ieee80211_sta *sta,
- u16 tidno)
-{
- struct ath_common *common = ath9k_hw_common(sc->sc_ah);
- struct ath_atx_tid *tid;
- struct ath_node *an;
- struct ath_txq *txq;
-
- ath_dbg(common, XMIT, "%s called\n", __func__);
-
- an = (struct ath_node *)sta->drv_priv;
- tid = ATH_AN_2_TID(an, tidno);
- txq = tid->txq;
-
- ath_txq_lock(sc, txq);
-
- tid->baw_size = IEEE80211_MIN_AMPDU_BUF << sta->ht_cap.ampdu_factor;
-
- if (ath_tid_has_buffered(tid)) {
- ath_tx_queue_tid(sc, txq, tid);
- ath_txq_schedule(sc, txq);
- }
-
- ath_txq_unlock_complete(sc, txq);
-}
-
void ath9k_release_buffered_frames(struct ieee80211_hw *hw,
struct ieee80211_sta *sta,
u16 tids, int nframes,
struct ieee80211_tx_info *info;
struct list_head bf_q;
struct ath_buf *bf_tail = NULL, *bf;
- struct sk_buff_head *tid_q;
int sent = 0;
int i;
ath_txq_lock(sc, tid->txq);
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);
if (!bf)
break;
- __skb_unlink(bf->bf_mpdu, tid_q);
list_add_tail(&bf->list, &bf_q);
ath_set_rates(tid->an->vif, tid->an->sta, bf);
if (bf_isampdu(bf)) {
sent++;
TX_STAT_INC(txq->axq_qnum, a_queued_hw);
- if (an->sta && !ath_tid_has_buffered(tid))
+ if (an->sta && skb_queue_empty(&tid->retry_q))
ieee80211_sta_set_buffered(an->sta, i, false);
}
ath_txq_unlock_complete(sc, tid->txq);
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);
}
struct ath_softc *sc = hw->priv;
struct ath_txq *txq = txctl->txq;
struct ath_atx_tid *tid = NULL;
+ struct ath_node *an = NULL;
struct ath_buf *bf;
- bool queue, skip_uapsd = false, ps_resp;
+ bool ps_resp;
int q, ret;
if (vif)
avp = (void *)vif->drv_priv;
- if (info->flags & IEEE80211_TX_CTL_TX_OFFCHAN)
- txctl->force_channel = true;
-
ps_resp = !!(info->control.flags & IEEE80211_TX_CTRL_PS_RESPONSE);
ret = ath_tx_prepare(hw, skb, txctl);
q = skb_get_queue_mapping(skb);
- ath_txq_lock(sc, txq);
- if (txq == sc->tx.txq_map[q]) {
- fi->txq = q;
- if (++txq->pending_frames > sc->tx.txq_max_pending[q] &&
- !txq->stopped) {
- if (ath9k_is_chanctx_enabled())
- ieee80211_stop_queue(sc->hw, info->hw_queue);
- else
- ieee80211_stop_queue(sc->hw, q);
- txq->stopped = true;
- }
- }
-
- queue = ieee80211_is_data_present(hdr->frame_control);
-
- /* If chanctx, queue all null frames while NOA could be there */
- if (ath9k_is_chanctx_enabled() &&
- ieee80211_is_nullfunc(hdr->frame_control) &&
- !txctl->force_channel)
- queue = true;
-
- /* Force queueing of all frames that belong to a virtual interface on
- * a different channel context, to ensure that they are sent on the
- * correct channel.
- */
- if (((avp && avp->chanctx != sc->cur_chan) ||
- sc->cur_chan->stopped) && !txctl->force_channel) {
- if (!txctl->an)
- txctl->an = &avp->mcast_node;
- queue = true;
- skip_uapsd = true;
- }
-
- if (txctl->an && queue)
- tid = ath_get_skb_tid(sc, txctl->an, skb);
-
- if (!skip_uapsd && ps_resp) {
- ath_txq_unlock(sc, txq);
+ if (ps_resp)
txq = sc->tx.uapsdq;
- ath_txq_lock(sc, txq);
- } else if (txctl->an && queue) {
- WARN_ON(tid->txq != txctl->txq);
- if (info->flags & IEEE80211_TX_CTL_CLEAR_PS_FILT)
- tid->clear_ps_filter = true;
-
- /*
- * Add this frame to software queue for scheduling later
- * for aggregation.
- */
- TX_STAT_INC(txq->axq_qnum, a_queued_sw);
- __skb_queue_tail(&tid->buf_q, skb);
- if (!txctl->an->sleeping)
- ath_tx_queue_tid(sc, txq, tid);
+ if (txctl->sta) {
+ an = (struct ath_node *) sta->drv_priv;
+ tid = ath_get_skb_tid(sc, an, skb);
+ }
- ath_txq_schedule(sc, txq);
- goto out;
+ ath_txq_lock(sc, txq);
+ if (txq == sc->tx.txq_map[q]) {
+ fi->txq = q;
+ ++txq->pending_frames;
}
bf = ath_tx_setup_buffer(sc, txq, tid, skb);
struct ath_atx_tid *tid;
int tidno, acno;
- for (tidno = 0, tid = &an->tid[tidno];
- tidno < IEEE80211_NUM_TIDS;
- tidno++, tid++) {
+ for (tidno = 0; tidno < IEEE80211_NUM_TIDS; tidno++) {
+ tid = ath_node_to_tid(an, tidno);
tid->an = an;
tid->tidno = tidno;
tid->seq_start = tid->seq_next = 0;
tid->baw_head = tid->baw_tail = 0;
tid->active = false;
tid->clear_ps_filter = true;
- __skb_queue_head_init(&tid->buf_q);
+ tid->has_queued = false;
__skb_queue_head_init(&tid->retry_q);
INIT_LIST_HEAD(&tid->list);
acno = TID_TO_WME_AC(tidno);
tid->txq = sc->tx.txq_map[acno];
+
+ if (!an->sta)
+ break; /* just one multicast ath_atx_tid */
}
}
struct ath_txq *txq;
int tidno;
- for (tidno = 0, tid = &an->tid[tidno];
- tidno < IEEE80211_NUM_TIDS; tidno++, tid++) {
-
+ for (tidno = 0; tidno < IEEE80211_NUM_TIDS; tidno++) {
+ tid = ath_node_to_tid(an, tidno);
txq = tid->txq;
ath_txq_lock(sc, txq);
tid->active = false;
ath_txq_unlock(sc, txq);
+
+ if (!an->sta)
+ break; /* just one multicast ath_atx_tid */
}
}
projects / users / willy / pagecache.git / commitdiff