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ath9k: fix tx pending frames accounting for dropped packets

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When dropping packets that have gone far enough into the tx path, the
pending frame counter needs to be decreased.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Felix Fietkau 2013-06-30 12:02:13 +02:00 committed by John W. Linville
parent bcfb879432
commit a4943ccbc3
1 changed files with 28 additions and 16 deletions
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44
drivers/net/wireless/ath/ath9k/xmit.c
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@ -146,6 +146,28 @@ static void ath_set_rates(struct ieee80211_vif *vif, struct ieee80211_sta *sta,
ARRAY_SIZE(bf->rates));
}
static void ath_txq_skb_done(struct ath_softc *sc, struct ath_txq *txq,
struct sk_buff *skb)
{
int q;
q = skb_get_queue_mapping(skb);
if (txq == sc->tx.uapsdq)
txq = sc->tx.txq_map[q];
if (txq != sc->tx.txq_map[q])
return;
if (WARN_ON(--txq->pending_frames < 0))
txq->pending_frames = 0;
if (txq->stopped &&
txq->pending_frames < sc->tx.txq_max_pending[q]) {
ieee80211_wake_queue(sc->hw, q);
txq->stopped = false;
}
}
static void ath_tx_flush_tid(struct ath_softc *sc, struct ath_atx_tid *tid)
{
struct ath_txq *txq = tid->ac->txq;
@ -167,6 +189,7 @@ static void ath_tx_flush_tid(struct ath_softc *sc, struct ath_atx_tid *tid)
if (!bf) {
bf = ath_tx_setup_buffer(sc, txq, tid, skb);
if (!bf) {
ath_txq_skb_done(sc, txq, skb);
ieee80211_free_txskb(sc->hw, skb);
continue;
}
@ -811,6 +834,7 @@ ath_tx_get_tid_subframe(struct ath_softc *sc, struct ath_txq *txq,
if (!bf) {
__skb_unlink(skb, &tid->buf_q);
ath_txq_skb_done(sc, txq, skb);
ieee80211_free_txskb(sc->hw, skb);
continue;
}
@ -1824,6 +1848,7 @@ static void ath_tx_send_ampdu(struct ath_softc *sc, struct ath_txq *txq,
bf = ath_tx_setup_buffer(sc, txq, tid, skb);
if (!bf) {
ath_txq_skb_done(sc, txq, skb);
ieee80211_free_txskb(sc->hw, skb);
return;
}
@ -2090,6 +2115,7 @@ int ath_tx_start(struct ieee80211_hw *hw, struct sk_buff *skb,
bf = ath_tx_setup_buffer(sc, txq, tid, skb);
if (!bf) {
ath_txq_skb_done(sc, txq, skb);
if (txctl->paprd)
dev_kfree_skb_any(skb);
else
@ -2189,7 +2215,7 @@ 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 q, padpos, padsize;
int padpos, padsize;
unsigned long flags;
ath_dbg(common, XMIT, "TX complete: skb: %p\n", skb);
@ -2225,21 +2251,7 @@ static void ath_tx_complete(struct ath_softc *sc, struct sk_buff *skb,
spin_unlock_irqrestore(&sc->sc_pm_lock, flags);
__skb_queue_tail(&txq->complete_q, skb);
q = skb_get_queue_mapping(skb);
if (txq == sc->tx.uapsdq)
txq = sc->tx.txq_map[q];
if (txq == sc->tx.txq_map[q]) {
if (WARN_ON(--txq->pending_frames < 0))
txq->pending_frames = 0;
if (txq->stopped &&
txq->pending_frames < sc->tx.txq_max_pending[q]) {
ieee80211_wake_queue(sc->hw, q);
txq->stopped = false;
}
}
ath_txq_skb_done(sc, txq, skb);
}
static void ath_tx_complete_buf(struct ath_softc *sc, struct ath_buf *bf,