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path: root/drivers/net/wireless/ath/ath9k/beacon.c
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Diffstat (limited to 'drivers/net/wireless/ath/ath9k/beacon.c')
-rw-r--r--drivers/net/wireless/ath/ath9k/beacon.c48
1 files changed, 34 insertions, 14 deletions
diff --git a/drivers/net/wireless/ath/ath9k/beacon.c b/drivers/net/wireless/ath/ath9k/beacon.c
index 637dbc5f7b6..d4d8ceced89 100644
--- a/drivers/net/wireless/ath/ath9k/beacon.c
+++ b/drivers/net/wireless/ath/ath9k/beacon.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2008-2009 Atheros Communications Inc.
+ * Copyright (c) 2008-2011 Atheros Communications Inc.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
@@ -18,6 +18,12 @@
#define FUDGE 2
+static void ath9k_reset_beacon_status(struct ath_softc *sc)
+{
+ sc->beacon.tx_processed = false;
+ sc->beacon.tx_last = false;
+}
+
/*
* This function will modify certain transmit queue properties depending on
* the operating mode of the station (AP or AdHoc). Parameters are AIFS
@@ -72,6 +78,8 @@ static void ath_beacon_setup(struct ath_softc *sc, struct ath_vif *avp,
struct ieee80211_supported_band *sband;
u8 rate = 0;
+ ath9k_reset_beacon_status(sc);
+
ds = bf->bf_desc;
flags = ATH9K_TXDESC_NOACK;
@@ -134,6 +142,8 @@ static struct ath_buf *ath_beacon_generate(struct ieee80211_hw *hw,
struct ieee80211_tx_info *info;
int cabq_depth;
+ ath9k_reset_beacon_status(sc);
+
avp = (void *)vif->drv_priv;
cabq = sc->beacon.cabq;
@@ -351,9 +361,7 @@ void ath_beacon_tasklet(unsigned long data)
struct ath_buf *bf = NULL;
struct ieee80211_vif *vif;
int slot;
- u32 bfaddr, bc = 0, tsftu;
- u64 tsf;
- u16 intval;
+ u32 bfaddr, bc = 0;
/*
* Check if the previous beacon has gone out. If
@@ -388,17 +396,27 @@ void ath_beacon_tasklet(unsigned long data)
* on the tsf to safeguard against missing an swba.
*/
- intval = cur_conf->beacon_interval ? : ATH_DEFAULT_BINTVAL;
- tsf = ath9k_hw_gettsf64(ah);
- tsf += TU_TO_USEC(ah->config.sw_beacon_response_time);
- tsftu = TSF_TO_TU((tsf * ATH_BCBUF) >>32, tsf * ATH_BCBUF);
- slot = (tsftu % (intval * ATH_BCBUF)) / intval;
- vif = sc->beacon.bslot[slot];
+ if (ah->opmode == NL80211_IFTYPE_AP) {
+ u16 intval;
+ u32 tsftu;
+ u64 tsf;
+
+ intval = cur_conf->beacon_interval ? : ATH_DEFAULT_BINTVAL;
+ tsf = ath9k_hw_gettsf64(ah);
+ tsf += TU_TO_USEC(ah->config.sw_beacon_response_time);
+ tsftu = TSF_TO_TU((tsf * ATH_BCBUF) >>32, tsf * ATH_BCBUF);
+ slot = (tsftu % (intval * ATH_BCBUF)) / intval;
+ vif = sc->beacon.bslot[slot];
+
+ ath_dbg(common, ATH_DBG_BEACON,
+ "slot %d [tsf %llu tsftu %u intval %u] vif %p\n",
+ slot, tsf, tsftu / ATH_BCBUF, intval, vif);
+ } else {
+ slot = 0;
+ vif = sc->beacon.bslot[slot];
+ }
- ath_dbg(common, ATH_DBG_BEACON,
- "slot %d [tsf %llu tsftu %u intval %u] vif %p\n",
- slot, tsf, tsftu / ATH_BCBUF, intval, vif);
bfaddr = 0;
if (vif) {
@@ -636,6 +654,8 @@ static void ath_beacon_config_adhoc(struct ath_softc *sc,
struct ath_common *common = ath9k_hw_common(ah);
u32 tsf, delta, intval, nexttbtt;
+ ath9k_reset_beacon_status(sc);
+
tsf = ath9k_hw_gettsf32(ah) + TU_TO_USEC(FUDGE);
intval = TU_TO_USEC(conf->beacon_interval & ATH9K_BEACON_PERIOD);
@@ -646,7 +666,7 @@ static void ath_beacon_config_adhoc(struct ath_softc *sc,
delta = (tsf - sc->beacon.bc_tstamp);
else
delta = (tsf + 1 + (~0U - sc->beacon.bc_tstamp));
- nexttbtt = tsf + roundup(delta, intval);
+ nexttbtt = tsf + intval - (delta % intval);
}
ath_dbg(common, ATH_DBG_BEACON,