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ath9k: Send oneshot NoA

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This patch makes sure that a GO interface
sends out a new NoA schedule with 200ms duration
when mgd_prepare_tx() is called.

Signed-off-by: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Sujith Manoharan 2014-10-17 07:40:27 +05:30 committed by John W. Linville
parent a350335c5f
commit 0a019a58e3
2 changed files with 42 additions and 0 deletions
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1
drivers/net/wireless/ath/ath9k/ath9k.h
View File

@ -620,6 +620,7 @@ struct ath_vif {
u32 noa_start;
u32 noa_duration;
bool periodic_noa;
bool oneshot_noa;
};
struct ath9k_vif_iter_data {

41
drivers/net/wireless/ath/ath9k/channel.c
View File

@ -450,6 +450,27 @@ static void ath_chanctx_set_periodic_noa(struct ath_softc *sc,
avp->periodic_noa);
}
static void ath_chanctx_set_oneshot_noa(struct ath_softc *sc,
struct ath_vif *avp,
u32 tsf_time,
u32 duration)
{
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
avp->noa_index++;
avp->noa_start = tsf_time;
avp->periodic_noa = false;
avp->oneshot_noa = true;
avp->noa_duration = duration + sc->sched.channel_switch_time;
ath_dbg(common, CHAN_CTX,
"oneshot noa_duration: %d, noa_start: %d, noa_index: %d, periodic: %d\n",
avp->noa_duration,
avp->noa_start,
avp->noa_index,
avp->periodic_noa);
}
void ath_chanctx_event(struct ath_softc *sc, struct ieee80211_vif *vif,
enum ath_chanctx_event ev)
{
@ -476,6 +497,14 @@ void ath_chanctx_event(struct ath_softc *sc, struct ieee80211_vif *vif,
if (avp->offchannel_duration)
avp->offchannel_duration = 0;
if (avp->oneshot_noa) {
avp->noa_duration = 0;
avp->oneshot_noa = false;
ath_dbg(common, CHAN_CTX,
"Clearing oneshot NoA\n");
}
if (avp->chanctx != sc->cur_chan) {
ath_dbg(common, CHAN_CTX,
"Contexts differ, not preparing beacon\n");
@ -551,6 +580,18 @@ void ath_chanctx_event(struct ath_softc *sc, struct ieee80211_vif *vif,
ath_chanctx_handle_bmiss(sc, ctx, avp);
/*
* If a mgd_prepare_tx() has been called by mac80211,
* a one-shot NoA needs to be sent. This can happen
* with one or more active channel contexts - in both
* cases, a new NoA schedule has to be advertised.
*/
if (sc->sched.mgd_prepare_tx) {
ath_chanctx_set_oneshot_noa(sc, avp, tsf_time,
jiffies_to_usecs(HZ / 5));
break;
}
/* Prevent wrap-around issues */
if (avp->noa_duration && tsf_time - avp->noa_start > BIT(30))
avp->noa_duration = 0;