From: Felix Fietkau <nbd@xxxxxxxxxxx>
Signed-off-by: Felix Fietkau <nbd@xxxxxxxxxxx>
Signed-off-by: Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxxxx>
---
drivers/net/wireless/ath/ath9k/ath9k.h | 5 ++
drivers/net/wireless/ath/ath9k/channel.c | 95 ++++++++++++++++++++++++++++++--
drivers/net/wireless/ath/ath9k/main.c | 3 +
3 files changed, 99 insertions(+), 4 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h
index 7947909..0bc63bd 100644
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -350,6 +350,10 @@ enum ath_chanctx_event {
ATH_CHANCTX_EVENT_BEACON_SENT,
ATH_CHANCTX_EVENT_TSF_TIMER,
ATH_CHANCTX_EVENT_BEACON_RECEIVED,
+ ATH_CHANCTX_EVENT_ASSOC,
+ ATH_CHANCTX_EVENT_SWITCH,
+ ATH_CHANCTX_EVENT_UNASSIGN,
+ ATH_CHANCTX_EVENT_ENABLE_MULTICHANNEL,
};
enum ath_chanctx_state {
@@ -362,6 +366,7 @@ enum ath_chanctx_state {
struct ath_chanctx_sched {
bool beacon_pending;
+ bool offchannel_pending;
enum ath_chanctx_state state;
u32 next_tbtt;
diff --git a/drivers/net/wireless/ath/ath9k/channel.c b/drivers/net/wireless/ath/ath9k/channel.c
index 8d56b79..1cb2909 100644
--- a/drivers/net/wireless/ath/ath9k/channel.c
+++ b/drivers/net/wireless/ath/ath9k/channel.c
@@ -180,10 +180,13 @@ void ath_chanctx_check_active(struct ath_softc *sc, struct ath_chanctx *ctx)
n_active++;
}
- if (n_active > 1)
- set_bit(ATH_OP_MULTI_CHANNEL, &common->op_flags);
- else
+ if (n_active <= 1) {
clear_bit(ATH_OP_MULTI_CHANNEL, &common->op_flags);
+ return;
+ }
+ if (test_and_set_bit(ATH_OP_MULTI_CHANNEL, &common->op_flags))
+ return;
+ ath_chanctx_event(sc, NULL, ATH_CHANCTX_EVENT_ENABLE_MULTICHANNEL);
}
static bool
@@ -282,6 +285,7 @@ static void ath_chanctx_set_next(struct ath_softc *sc, bool force)
ath_chanctx_send_ps_frame(sc, false);
ath_offchannel_channel_change(sc);
+ ath_chanctx_event(sc, NULL, ATH_CHANCTX_EVENT_SWITCH);
}
void ath_chanctx_work(struct work_struct *work)
@@ -357,8 +361,17 @@ void ath9k_chanctx_force_active(struct ieee80211_hw *hw,
void ath_chanctx_switch(struct ath_softc *sc, struct ath_chanctx *ctx,
struct cfg80211_chan_def *chandef)
{
+ struct ath_common *common = ath9k_hw_common(sc->sc_ah);
spin_lock_bh(&sc->chan_lock);
+
+ if (test_bit(ATH_OP_MULTI_CHANNEL, &common->op_flags) &&
+ (sc->cur_chan != ctx) && (ctx == &sc->offchannel.chan)) {
+ sc->sched.offchannel_pending = true;
+ spin_unlock_bh(&sc->chan_lock);
+ return;
+ }
+
sc->next_chan = ctx;
if (chandef)
ctx->chandef = *chandef;
@@ -462,6 +475,7 @@ void ath_chanctx_event(struct ath_softc *sc, struct ieee80211_vif *vif,
struct ath_hw *ah = sc->sc_ah;
struct ath_common *common = ath9k_hw_common(ah);
struct ath_vif *avp = NULL;
+ struct ath_chanctx *ctx;
u32 tsf_time;
bool noa_changed = false;
@@ -475,6 +489,25 @@ void ath_chanctx_event(struct ath_softc *sc, struct ieee80211_vif *vif,
if (avp->offchannel_duration)
avp->offchannel_duration = 0;
+ if (avp->chanctx != sc->cur_chan)
+ break;
+
+ if (sc->sched.offchannel_pending) {
+ sc->sched.offchannel_pending = false;
+ sc->next_chan = &sc->offchannel.chan;
+ sc->sched.state = ATH_CHANCTX_STATE_WAIT_FOR_BEACON;
+ }
+
+ ctx = ath_chanctx_get_next(sc, sc->cur_chan);
+ if (ctx->active && sc->sched.state == ATH_CHANCTX_STATE_IDLE) {
+ sc->next_chan = ctx;
+ sc->sched.state = ATH_CHANCTX_STATE_WAIT_FOR_BEACON;
+ }
+
+ /* if the timer missed its window, use the next interval */
+ if (sc->sched.state == ATH_CHANCTX_STATE_WAIT_FOR_TIMER)
+ sc->sched.state = ATH_CHANCTX_STATE_WAIT_FOR_BEACON;
+
if (sc->sched.state != ATH_CHANCTX_STATE_WAIT_FOR_BEACON)
break;
@@ -518,11 +551,65 @@ void ath_chanctx_event(struct ath_softc *sc, struct ieee80211_vif *vif,
ieee80211_queue_work(sc->hw, &sc->chanctx_work);
break;
case ATH_CHANCTX_EVENT_BEACON_RECEIVED:
- if (!test_bit(ATH_OP_MULTI_CHANNEL, &common->op_flags))
+ if (!test_bit(ATH_OP_MULTI_CHANNEL, &common->op_flags) ||
+ sc->cur_chan == &sc->offchannel.chan)
break;
ath_chanctx_adjust_tbtt_delta(sc);
break;
+ case ATH_CHANCTX_EVENT_ASSOC:
+ if (sc->sched.state != ATH_CHANCTX_STATE_FORCE_ACTIVE ||
+ avp->chanctx != sc->cur_chan)
+ break;
+
+ sc->sched.state = ATH_CHANCTX_STATE_IDLE;
+ /* fall through */
+ case ATH_CHANCTX_EVENT_SWITCH:
+ if (!test_bit(ATH_OP_MULTI_CHANNEL, &common->op_flags) ||
+ sc->sched.state == ATH_CHANCTX_STATE_FORCE_ACTIVE ||
+ sc->cur_chan->switch_after_beacon ||
+ sc->cur_chan == &sc->offchannel.chan)
+ break;
+
+ /* If this is a station chanctx, stay active for a half
+ * beacon period (minus channel switch time)
+ */
+ sc->next_chan = ath_chanctx_get_next(sc, sc->cur_chan);
+
+ sc->sched.state = ATH_CHANCTX_STATE_WAIT_FOR_TIMER;
+ tsf_time = ath9k_hw_gettsf32(sc->sc_ah);
+ tsf_time +=
+ TU_TO_USEC(sc->cur_chan->beacon.beacon_interval) / 2;
+ tsf_time -= sc->sched.channel_switch_time;
+ sc->sched.switch_start_time = tsf_time;
+
+ ath9k_hw_gen_timer_start(ah, sc->p2p_ps_timer,
+ tsf_time, 1000000);
+ break;
+ case ATH_CHANCTX_EVENT_ENABLE_MULTICHANNEL:
+ if (sc->cur_chan == &sc->offchannel.chan ||
+ sc->cur_chan->switch_after_beacon)
+ break;
+
+ sc->next_chan = ath_chanctx_get_next(sc, sc->cur_chan);
+ ieee80211_queue_work(sc->hw, &sc->chanctx_work);
+ break;
+ case ATH_CHANCTX_EVENT_UNASSIGN:
+ if (sc->cur_chan->assigned) {
+ if (sc->next_chan && !sc->next_chan->assigned &&
+ sc->next_chan != &sc->offchannel.chan)
+ sc->sched.state = ATH_CHANCTX_STATE_IDLE;
+ break;
+ }
+
+ ctx = ath_chanctx_get_next(sc, sc->cur_chan);
+ sc->sched.state = ATH_CHANCTX_STATE_IDLE;
+ if (!ctx->assigned)
+ break;
+
+ sc->next_chan = ctx;
+ ieee80211_queue_work(sc->hw, &sc->chanctx_work);
+ break;
}
spin_unlock_bh(&sc->chan_lock);
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index b8975f0..f7d8dda 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -1747,6 +1747,8 @@ static void ath9k_bss_info_changed(struct ieee80211_hw *hw,
bss_conf->bssid, bss_conf->assoc);
ath9k_calculate_summary_state(sc, avp->chanctx);
+ if (bss_conf->assoc)
+ ath_chanctx_event(sc, vif, ATH_CHANCTX_EVENT_ASSOC);
}
if (changed & BSS_CHANGED_IBSS) {
@@ -2492,6 +2494,7 @@ static void ath9k_remove_chanctx(struct ieee80211_hw *hw,
mutex_lock(&sc->mutex);
ctx->assigned = false;
+ ath_chanctx_event(sc, NULL, ATH_CHANCTX_EVENT_UNASSIGN);
mutex_unlock(&sc->mutex);
}
--
2.0.0
--
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