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ath9k: fix tracking of enabled AP beacons

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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@vger.kernel.org
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Felix Fietkau 2015-03-12 17:17:18 +01:00 committed by Kalle Valo
parent 3f1615340a
commit 1cf48f22c9
2 changed files with 13 additions and 9 deletions
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20
drivers/net/wireless/ath/ath9k/beacon.c
View File

@ -219,12 +219,15 @@ 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,
@ -521,8 +524,7 @@ 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;
@ -616,12 +618,14 @@ 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);
}
}

2
drivers/net/wireless/ath/ath9k/common.h
View File

@ -54,7 +54,7 @@ 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;