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126 lines
3.9 KiB
Diff
126 lines
3.9 KiB
Diff
From: Sujith Manoharan <c_manoha@qca.qualcomm.com>
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Date: Fri, 17 Oct 2014 07:40:18 +0530
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Subject: [PATCH] ath9k: Check for pending frames properly
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Pending frames in the driver can be present
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either in the HW queues or SW. ath9k_has_pending_frames()
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currently checks for the HW queues first and then
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checks if any ACs are queued in the driver.
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In MCC mode, we need to check the HW queues alone, since
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the SW queues are just marked as 'stopped' - they will
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be processed in the next context switch. But since we
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don't differentiate this now, mention whether we want
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to check if there are frames in the SW queues.
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* The flush() callback checks both HW and SW queues.
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* The tx_frames_pending() callback does the same.
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* The call to __ath9k_flush() in MCC mode checks HW queues alone.
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Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
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---
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--- a/drivers/net/wireless/ath/ath9k/ath9k.h
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+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
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@@ -715,7 +715,8 @@ int ath_update_survey_stats(struct ath_s
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void ath_update_survey_nf(struct ath_softc *sc, int channel);
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void ath9k_queue_reset(struct ath_softc *sc, enum ath_reset_type type);
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void ath_ps_full_sleep(unsigned long data);
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-void __ath9k_flush(struct ieee80211_hw *hw, u32 queues, bool drop);
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+void __ath9k_flush(struct ieee80211_hw *hw, u32 queues, bool drop,
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+ bool sw_pending);
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/**********/
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/* BTCOEX */
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--- a/drivers/net/wireless/ath/ath9k/channel.c
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+++ b/drivers/net/wireless/ath/ath9k/channel.c
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@@ -1137,10 +1137,11 @@ void ath_chanctx_set_next(struct ath_sof
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ath9k_chanctx_stop_queues(sc, sc->cur_chan);
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queues_stopped = true;
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- __ath9k_flush(sc->hw, ~0, true);
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+ __ath9k_flush(sc->hw, ~0, true, false);
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if (ath_chanctx_send_ps_frame(sc, true))
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- __ath9k_flush(sc->hw, BIT(IEEE80211_AC_VO), false);
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+ __ath9k_flush(sc->hw, BIT(IEEE80211_AC_VO),
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+ false, false);
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send_ps = true;
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spin_lock_bh(&sc->chan_lock);
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--- a/drivers/net/wireless/ath/ath9k/main.c
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+++ b/drivers/net/wireless/ath/ath9k/main.c
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@@ -54,7 +54,8 @@ u8 ath9k_parse_mpdudensity(u8 mpdudensit
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}
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}
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-static bool ath9k_has_pending_frames(struct ath_softc *sc, struct ath_txq *txq)
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+static bool ath9k_has_pending_frames(struct ath_softc *sc, struct ath_txq *txq,
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+ bool sw_pending)
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{
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bool pending = false;
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@@ -65,6 +66,9 @@ static bool ath9k_has_pending_frames(str
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goto out;
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}
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+ if (!sw_pending)
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+ goto out;
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+
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if (txq->mac80211_qnum >= 0) {
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struct list_head *list;
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@@ -2003,7 +2007,8 @@ static void ath9k_set_coverage_class(str
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mutex_unlock(&sc->mutex);
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}
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-static bool ath9k_has_tx_pending(struct ath_softc *sc)
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+static bool ath9k_has_tx_pending(struct ath_softc *sc,
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+ bool sw_pending)
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{
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int i, npend = 0;
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@@ -2011,7 +2016,8 @@ static bool ath9k_has_tx_pending(struct
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if (!ATH_TXQ_SETUP(sc, i))
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continue;
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- npend = ath9k_has_pending_frames(sc, &sc->tx.txq[i]);
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+ npend = ath9k_has_pending_frames(sc, &sc->tx.txq[i],
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+ sw_pending);
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if (npend)
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break;
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}
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@@ -2025,11 +2031,12 @@ static void ath9k_flush(struct ieee80211
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struct ath_softc *sc = hw->priv;
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mutex_lock(&sc->mutex);
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- __ath9k_flush(hw, queues, drop);
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+ __ath9k_flush(hw, queues, drop, true);
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mutex_unlock(&sc->mutex);
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}
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-void __ath9k_flush(struct ieee80211_hw *hw, u32 queues, bool drop)
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+void __ath9k_flush(struct ieee80211_hw *hw, u32 queues, bool drop,
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+ bool sw_pending)
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{
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struct ath_softc *sc = hw->priv;
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struct ath_hw *ah = sc->sc_ah;
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@@ -2056,7 +2063,7 @@ void __ath9k_flush(struct ieee80211_hw *
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ath_dbg(common, CHAN_CTX,
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"Flush timeout: %d\n", jiffies_to_msecs(timeout));
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- if (wait_event_timeout(sc->tx_wait, !ath9k_has_tx_pending(sc),
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+ if (wait_event_timeout(sc->tx_wait, !ath9k_has_tx_pending(sc, sw_pending),
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timeout) > 0)
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drop = false;
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@@ -2079,7 +2086,7 @@ static bool ath9k_tx_frames_pending(stru
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{
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struct ath_softc *sc = hw->priv;
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- return ath9k_has_tx_pending(sc);
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+ return ath9k_has_tx_pending(sc, true);
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}
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static int ath9k_tx_last_beacon(struct ieee80211_hw *hw)
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