1 files changed, 35 insertions, 167 deletions

diff --git a/drivers/net/wireless/ath/ath9k/beacon.c b/drivers/net/wireless/ath/ath9k/beacon.c
index 2e8bba0eb361..bd9e634879e6 100644
--- a/drivers/net/wireless/ath/ath9k/beacon.c
+++ b/drivers/net/wireless/ath/ath9k/beacon.c
@@ -80,7 +80,7 @@ static void ath9k_beacon_setup(struct ath_softc *sc, struct ieee80211_vif *vif,
 	u8 chainmask = ah->txchainmask;
 	u8 rate = 0;
 
-	sband = &sc->sbands[common->hw->conf.chandef.chan->band];
+	sband = &common->sbands[common->hw->conf.chandef.chan->band];
 	rate = sband->bitrates[rateidx].hw_value;
 	if (vif->bss_conf.use_short_preamble)
 		rate |= sband->bitrates[rateidx].hw_value_short;
@@ -292,11 +292,8 @@ static void ath9k_set_tsfadjust(struct ath_softc *sc, struct ieee80211_vif *vif)
 		(unsigned long long)tsfadjust, avp->av_bslot);
 }
 
-bool ath9k_csa_is_finished(struct ath_softc *sc)
+bool ath9k_csa_is_finished(struct ath_softc *sc, struct ieee80211_vif *vif)
 {
-	struct ieee80211_vif *vif;
-
-	vif = sc->csa_vif;
 	if (!vif || !vif->csa_active)
 		return false;
 
@@ -304,11 +301,22 @@ bool ath9k_csa_is_finished(struct ath_softc *sc)
 		return false;
 
 	ieee80211_csa_finish(vif);
-
-	sc->csa_vif = NULL;
 	return true;
 }
 
+static void ath9k_csa_update_vif(void *data, u8 *mac, struct ieee80211_vif *vif)
+{
+	struct ath_softc *sc = data;
+	ath9k_csa_is_finished(sc, vif);
+}
+
+void ath9k_csa_update(struct ath_softc *sc)
+{
+	ieee80211_iterate_active_interfaces_atomic(sc->hw,
+						   IEEE80211_IFACE_ITER_NORMAL,
+						   ath9k_csa_update_vif, sc);
+}
+
 void ath9k_beacon_tasklet(unsigned long data)
 {
 	struct ath_softc *sc = (struct ath_softc *)data;
@@ -319,7 +327,7 @@ void ath9k_beacon_tasklet(unsigned long data)
 	bool edma = !!(ah->caps.hw_caps & ATH9K_HW_CAP_EDMA);
 	int slot;
 
-	if (test_bit(SC_OP_HW_RESET, &sc->sc_flags)) {
+	if (test_bit(ATH_OP_HW_RESET, &common->op_flags)) {
 		ath_dbg(common, RESET,
 			"reset work is pending, skip beaconing now\n");
 		return;
@@ -362,13 +370,13 @@ void ath9k_beacon_tasklet(unsigned long data)
 		return;
 	}
 
-	/* EDMA devices check that in the tx completion function. */
-	if (!edma && ath9k_csa_is_finished(sc))
-		return;
-
 	slot = ath9k_beacon_choose_slot(sc);
 	vif = sc->beacon.bslot[slot];
 
+	/* EDMA devices check that in the tx completion function. */
+	if (!edma && ath9k_csa_is_finished(sc, vif))
+		return;
+
 	if (!vif || !vif->bss_conf.enable_beacon)
 		return;
 
@@ -438,33 +446,6 @@ static void ath9k_beacon_init(struct ath_softc *sc, u32 nexttbtt,
 	ath9k_hw_enable_interrupts(ah);
 }
 
-/* Calculate the modulo of a 64 bit TSF snapshot with a TU divisor */
-static u32 ath9k_mod_tsf64_tu(u64 tsf, u32 div_tu)
-{
-	u32 tsf_mod, tsf_hi, tsf_lo, mod_hi, mod_lo;
-
-	tsf_mod = tsf & (BIT(10) - 1);
-	tsf_hi = tsf >> 32;
-	tsf_lo = ((u32) tsf) >> 10;
-
-	mod_hi = tsf_hi % div_tu;
-	mod_lo = ((mod_hi << 22) + tsf_lo) % div_tu;
-
-	return (mod_lo << 10) | tsf_mod;
-}
-
-static u32 ath9k_get_next_tbtt(struct ath_softc *sc, u64 tsf,
-			       unsigned int interval)
-{
-	struct ath_hw *ah = sc->sc_ah;
-	unsigned int offset;
-
-	tsf += TU_TO_USEC(FUDGE + ah->config.sw_beacon_response_time);
-	offset = ath9k_mod_tsf64_tu(tsf, interval);
-
-	return (u32) tsf + TU_TO_USEC(interval) - offset;
-}
-
 /*
  * For multi-bss ap support beacons are either staggered evenly over N slots or
  * burst together.  For the former arrange for the SWBA to be delivered for each
@@ -474,115 +455,18 @@ static void ath9k_beacon_config_ap(struct ath_softc *sc,
 				   struct ath_beacon_config *conf)
 {
 	struct ath_hw *ah = sc->sc_ah;
-	struct ath_common *common = ath9k_hw_common(ah);
-	u32 nexttbtt, intval;
-
-	/* NB: the beacon interval is kept internally in TU's */
-	intval = TU_TO_USEC(conf->beacon_interval);
-	intval /= ATH_BCBUF;
-	nexttbtt = ath9k_get_next_tbtt(sc, ath9k_hw_gettsf64(ah),
-				       conf->beacon_interval);
-
-	if (conf->enable_beacon)
-		ah->imask |= ATH9K_INT_SWBA;
-	else
-		ah->imask &= ~ATH9K_INT_SWBA;
-
-	ath_dbg(common, BEACON,
-		"AP (%s) nexttbtt: %u intval: %u conf_intval: %u\n",
-		(conf->enable_beacon) ? "Enable" : "Disable",
-		nexttbtt, intval, conf->beacon_interval);
 
-	ath9k_beacon_init(sc, nexttbtt, intval, false);
+	ath9k_cmn_beacon_config_ap(ah, conf, ATH_BCBUF);
+	ath9k_beacon_init(sc, conf->nexttbtt, conf->intval, false);
 }
 
-/*
- * This sets up the beacon timers according to the timestamp of the last
- * received beacon and the current TSF, configures PCF and DTIM
- * handling, programs the sleep registers so the hardware will wakeup in
- * time to receive beacons, and configures the beacon miss handling so
- * we'll receive a BMISS interrupt when we stop seeing beacons from the AP
- * we've associated with.
- */
-static void ath9k_beacon_config_sta(struct ath_softc *sc,
+static void ath9k_beacon_config_sta(struct ath_hw *ah,
 				    struct ath_beacon_config *conf)
 {
-	struct ath_hw *ah = sc->sc_ah;
-	struct ath_common *common = ath9k_hw_common(ah);
 	struct ath9k_beacon_state bs;
-	int dtim_intval, sleepduration;
-	u32 nexttbtt = 0, intval;
-	u64 tsf;
 
-	/* No need to configure beacon if we are not associated */
-	if (!test_bit(SC_OP_PRIM_STA_VIF, &sc->sc_flags)) {
-		ath_dbg(common, BEACON,
-			"STA is not yet associated..skipping beacon config\n");
+	if (ath9k_cmn_beacon_config_sta(ah, conf, &bs) == -EPERM)
 		return;
-	}
-
-	memset(&bs, 0, sizeof(bs));
-	intval = conf->beacon_interval;
-
-	/*
-	 * Setup dtim parameters according to
-	 * last beacon we received (which may be none).
-	 */
-	dtim_intval = intval * conf->dtim_period;
-	sleepduration = conf->listen_interval * intval;
-
-	/*
-	 * Pull nexttbtt forward to reflect the current
-	 * TSF and calculate dtim state for the result.
-	 */
-	tsf = ath9k_hw_gettsf64(ah);
-	nexttbtt = ath9k_get_next_tbtt(sc, tsf, intval);
-
-	bs.bs_intval = TU_TO_USEC(intval);
-	bs.bs_dtimperiod = conf->dtim_period * bs.bs_intval;
-	bs.bs_nexttbtt = nexttbtt;
-	bs.bs_nextdtim = nexttbtt;
-	if (conf->dtim_period > 1)
-		bs.bs_nextdtim = ath9k_get_next_tbtt(sc, tsf, dtim_intval);
-
-	/*
-	 * Calculate the number of consecutive beacons to miss* before taking
-	 * a BMISS interrupt. The configuration is specified in TU so we only
-	 * need calculate based	on the beacon interval.  Note that we clamp the
-	 * result to at most 15 beacons.
-	 */
-	if (sleepduration > intval) {
-		bs.bs_bmissthreshold = conf->listen_interval *
-			ATH_DEFAULT_BMISS_LIMIT / 2;
-	} else {
-		bs.bs_bmissthreshold = DIV_ROUND_UP(conf->bmiss_timeout, intval);
-		if (bs.bs_bmissthreshold > 15)
-			bs.bs_bmissthreshold = 15;
-		else if (bs.bs_bmissthreshold <= 0)
-			bs.bs_bmissthreshold = 1;
-	}
-
-	/*
-	 * Calculate sleep duration. The configuration is given in ms.
-	 * We ensure a multiple of the beacon period is used. Also, if the sleep
-	 * duration is greater than the DTIM period then it makes senses
-	 * to make it a multiple of that.
-	 *
-	 * XXX fixed at 100ms
-	 */
-
-	bs.bs_sleepduration = TU_TO_USEC(roundup(IEEE80211_MS_TO_TU(100),
-						 sleepduration));
-	if (bs.bs_sleepduration > bs.bs_dtimperiod)
-		bs.bs_sleepduration = bs.bs_dtimperiod;
-
-	/* TSF out of range threshold fixed at 1 second */
-	bs.bs_tsfoor_threshold = ATH9K_TSFOOR_THRESHOLD;
-
-	ath_dbg(common, BEACON, "bmiss: %u sleep: %u\n",
-		bs.bs_bmissthreshold, bs.bs_sleepduration);
-
-	/* Set the computed STA beacon timers */
 
 	ath9k_hw_disable_interrupts(ah);
 	ath9k_hw_set_sta_beacon_timers(ah, &bs);
@@ -597,36 +481,19 @@ static void ath9k_beacon_config_adhoc(struct ath_softc *sc,
 {
 	struct ath_hw *ah = sc->sc_ah;
 	struct ath_common *common = ath9k_hw_common(ah);
-	u32 intval, nexttbtt;
 
 	ath9k_reset_beacon_status(sc);
 
-	intval = TU_TO_USEC(conf->beacon_interval);
-
-	if (conf->ibss_creator)
-		nexttbtt = intval;
-	else
-		nexttbtt = ath9k_get_next_tbtt(sc, ath9k_hw_gettsf64(ah),
-					       conf->beacon_interval);
-
-	if (conf->enable_beacon)
-		ah->imask |= ATH9K_INT_SWBA;
-	else
-		ah->imask &= ~ATH9K_INT_SWBA;
-
-	ath_dbg(common, BEACON,
-		"IBSS (%s) nexttbtt: %u intval: %u conf_intval: %u\n",
-		(conf->enable_beacon) ? "Enable" : "Disable",
-		nexttbtt, intval, conf->beacon_interval);
+	ath9k_cmn_beacon_config_adhoc(ah, conf);
 
-	ath9k_beacon_init(sc, nexttbtt, intval, conf->ibss_creator);
+	ath9k_beacon_init(sc, conf->nexttbtt, conf->intval, conf->ibss_creator);
 
 	/*
 	 * Set the global 'beacon has been configured' flag for the
 	 * joiner case in IBSS mode.
 	 */
 	if (!conf->ibss_creator && conf->enable_beacon)
-		set_bit(SC_OP_BEACONS, &sc->sc_flags);
+		set_bit(ATH_OP_BEACONS, &common->op_flags);
 }
 
 static bool ath9k_allow_beacon_config(struct ath_softc *sc,
@@ -646,7 +513,7 @@ static bool ath9k_allow_beacon_config(struct ath_softc *sc,
 
 	if (sc->sc_ah->opmode == NL80211_IFTYPE_STATION) {
 		if ((vif->type == NL80211_IFTYPE_STATION) &&
-		    test_bit(SC_OP_BEACONS, &sc->sc_flags) &&
+		    test_bit(ATH_OP_BEACONS, &common->op_flags) &&
 		    !avp->primary_sta_vif) {
 			ath_dbg(common, CONFIG,
 				"Beacon already configured for a station interface\n");
@@ -668,7 +535,6 @@ static void ath9k_cache_beacon_config(struct ath_softc *sc,
 
 	cur_conf->beacon_interval = bss_conf->beacon_int;
 	cur_conf->dtim_period = bss_conf->dtim_period;
-	cur_conf->listen_interval = 1;
 	cur_conf->dtim_count = 1;
 	cur_conf->ibss_creator = bss_conf->ibss_creator;
 	cur_conf->bmiss_timeout =
@@ -698,6 +564,8 @@ void ath9k_beacon_config(struct ath_softc *sc, struct ieee80211_vif *vif,
 {
 	struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
 	struct ath_beacon_config *cur_conf = &sc->cur_beacon_conf;
+        struct ath_hw *ah = sc->sc_ah;
+        struct ath_common *common = ath9k_hw_common(ah);
 	unsigned long flags;
 	bool skip_beacon = false;
 
@@ -710,7 +578,7 @@ void ath9k_beacon_config(struct ath_softc *sc, struct ieee80211_vif *vif,
 	if (sc->sc_ah->opmode == NL80211_IFTYPE_STATION) {
 		ath9k_cache_beacon_config(sc, bss_conf);
 		ath9k_set_beacon(sc);
-		set_bit(SC_OP_BEACONS, &sc->sc_flags);
+		set_bit(ATH_OP_BEACONS, &common->op_flags);
 		return;
 	}
 
@@ -749,13 +617,13 @@ void ath9k_beacon_config(struct ath_softc *sc, struct ieee80211_vif *vif,
 		}
 
 		/*
-		 * Do not set the SC_OP_BEACONS flag for IBSS joiner mode
+		 * Do not set the ATH_OP_BEACONS flag for IBSS joiner mode
 		 * here, it is done in ath9k_beacon_config_adhoc().
 		 */
 		if (cur_conf->enable_beacon && !skip_beacon)
-			set_bit(SC_OP_BEACONS, &sc->sc_flags);
+			set_bit(ATH_OP_BEACONS, &common->op_flags);
 		else
-			clear_bit(SC_OP_BEACONS, &sc->sc_flags);
+			clear_bit(ATH_OP_BEACONS, &common->op_flags);
 	}
 }
 
@@ -773,7 +641,7 @@ void ath9k_set_beacon(struct ath_softc *sc)
 		ath9k_beacon_config_adhoc(sc, cur_conf);
 		break;
 	case NL80211_IFTYPE_STATION:
-		ath9k_beacon_config_sta(sc, cur_conf);
+		ath9k_beacon_config_sta(sc->sc_ah, cur_conf);
 		break;
 	default:
 		ath_dbg(common, CONFIG, "Unsupported beaconing mode\n");