86 lines
2.4 KiB
Diff
86 lines
2.4 KiB
Diff
From: Sujith Manoharan <c_manoha@qca.qualcomm.com>
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Date: Fri, 17 Oct 2014 07:40:27 +0530
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Subject: [PATCH] ath9k: Send oneshot NoA
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This patch makes sure that a GO interface
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sends out a new NoA schedule with 200ms duration
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when mgd_prepare_tx() is called.
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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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@@ -620,6 +620,7 @@ struct ath_vif {
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u32 noa_start;
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u32 noa_duration;
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bool periodic_noa;
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+ bool oneshot_noa;
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};
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struct ath9k_vif_iter_data {
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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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@@ -450,6 +450,27 @@ static void ath_chanctx_set_periodic_noa
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avp->periodic_noa);
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}
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+static void ath_chanctx_set_oneshot_noa(struct ath_softc *sc,
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+ struct ath_vif *avp,
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+ u32 tsf_time,
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+ u32 duration)
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+{
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+ struct ath_common *common = ath9k_hw_common(sc->sc_ah);
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+
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+ avp->noa_index++;
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+ avp->noa_start = tsf_time;
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+ avp->periodic_noa = false;
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+ avp->oneshot_noa = true;
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+ avp->noa_duration = duration + sc->sched.channel_switch_time;
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+
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+ ath_dbg(common, CHAN_CTX,
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+ "oneshot noa_duration: %d, noa_start: %d, noa_index: %d, periodic: %d\n",
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+ avp->noa_duration,
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+ avp->noa_start,
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+ avp->noa_index,
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+ avp->periodic_noa);
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+}
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+
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void ath_chanctx_event(struct ath_softc *sc, struct ieee80211_vif *vif,
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enum ath_chanctx_event ev)
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{
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@@ -476,6 +497,14 @@ void ath_chanctx_event(struct ath_softc
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if (avp->offchannel_duration)
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avp->offchannel_duration = 0;
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+ if (avp->oneshot_noa) {
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+ avp->noa_duration = 0;
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+ avp->oneshot_noa = false;
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+
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+ ath_dbg(common, CHAN_CTX,
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+ "Clearing oneshot NoA\n");
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+ }
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+
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if (avp->chanctx != sc->cur_chan) {
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ath_dbg(common, CHAN_CTX,
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"Contexts differ, not preparing beacon\n");
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@@ -551,6 +580,18 @@ void ath_chanctx_event(struct ath_softc
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ath_chanctx_handle_bmiss(sc, ctx, avp);
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+ /*
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+ * If a mgd_prepare_tx() has been called by mac80211,
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+ * a one-shot NoA needs to be sent. This can happen
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+ * with one or more active channel contexts - in both
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+ * cases, a new NoA schedule has to be advertised.
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+ */
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+ if (sc->sched.mgd_prepare_tx) {
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+ ath_chanctx_set_oneshot_noa(sc, avp, tsf_time,
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+ jiffies_to_usecs(HZ / 5));
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+ break;
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+ }
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+
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/* Prevent wrap-around issues */
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if (avp->noa_duration && tsf_time - avp->noa_start > BIT(30))
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avp->noa_duration = 0;
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