From: Felix Fietkau <nbd@xxxxxxxxxxx>
This patch has been added to the 3.18 stable tree. If you have any
objections, please let us know.
===============
[ Upstream commit 1cf48f22c98ae24a49a3f1b6900e4c9a9a0fcc62 ]
sc->nbcnvifs tracks assigned beacon slots, not enabled beacons.
Therefore, it cannot be used to decide if cur_conf->enable_beacon (bool)
should be updated, or if beacons have been enabled already.
With the current code (depending on the order of calls), beacons often
do not get enabled in an AP+STA setup.
To fix tracking of enabled beacons, convert cur_conf->enable_beacon to a
bitmask of enabled beacon slots.
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Felix Fietkau <nbd@xxxxxxxxxxx>
Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sasha.levin@xxxxxxxxxx>
---
drivers/net/wireless/ath/ath9k/beacon.c | 20 ++++++++++++--------
drivers/net/wireless/ath/ath9k/common.h | 2 +-
2 files changed, 13 insertions(+), 9 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/beacon.c b/drivers/net/wireless/ath/ath9k/beacon.c
index ecb783b..9ee8ed0 100644
--- a/drivers/net/wireless/ath/ath9k/beacon.c
+++ b/drivers/net/wireless/ath/ath9k/beacon.c
@@ -218,12 +218,15 @@ void ath9k_beacon_remove_slot(struct ath_softc *sc, struct ieee80211_vif *vif)
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
struct ath_vif *avp = (void *)vif->drv_priv;
struct ath_buf *bf = avp->av_bcbuf;
+ struct ath_beacon_config *cur_conf = &sc->cur_chan->beacon;
ath_dbg(common, CONFIG, "Removing interface at beacon slot: %d\n",
avp->av_bslot);
tasklet_disable(&sc->bcon_tasklet);
+ cur_conf->enable_beacon &= ~BIT(avp->av_bslot);
+
if (bf && bf->bf_mpdu) {
struct sk_buff *skb = bf->bf_mpdu;
dma_unmap_single(sc->dev, bf->bf_buf_addr,
@@ -520,8 +523,7 @@ static bool ath9k_allow_beacon_config(struct ath_softc *sc,
}
if (sc->sc_ah->opmode == NL80211_IFTYPE_AP) {
- if ((vif->type != NL80211_IFTYPE_AP) ||
- (sc->nbcnvifs > 1)) {
+ if (vif->type != NL80211_IFTYPE_AP) {
ath_dbg(common, CONFIG,
"An AP interface is already present !\n");
return false;
@@ -615,12 +617,14 @@ void ath9k_beacon_config(struct ath_softc *sc, struct ieee80211_vif *vif,
* enabling/disabling SWBA.
*/
if (changed & BSS_CHANGED_BEACON_ENABLED) {
- if (!bss_conf->enable_beacon &&
- (sc->nbcnvifs <= 1)) {
- cur_conf->enable_beacon = false;
- } else if (bss_conf->enable_beacon) {
- cur_conf->enable_beacon = true;
- ath9k_cache_beacon_config(sc, ctx, bss_conf);
+ bool enabled = cur_conf->enable_beacon;
+
+ if (!bss_conf->enable_beacon) {
+ cur_conf->enable_beacon &= ~BIT(avp->av_bslot);
+ } else {
+ cur_conf->enable_beacon |= BIT(avp->av_bslot);
+ if (!enabled)
+ ath9k_cache_beacon_config(sc, ctx, bss_conf);
}
}
diff --git a/drivers/net/wireless/ath/ath9k/common.h b/drivers/net/wireless/ath/ath9k/common.h
index ffc454b..81899e7 100644
--- a/drivers/net/wireless/ath/ath9k/common.h
+++ b/drivers/net/wireless/ath/ath9k/common.h
@@ -53,7 +53,7 @@ struct ath_beacon_config {
u16 dtim_period;
u16 bmiss_timeout;
u8 dtim_count;
- bool enable_beacon;
+ u8 enable_beacon;
bool ibss_creator;
u32 nexttbtt;
u32 intval;
--
2.1.0
--
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