* The beaconing status routine is not required, since in
multi-VIF cases the HW beacon parameters should not be
re-configured.
* Remove SC_OP_TSF_RESET - when a beaconing interface comes
up the first time, the TSF has to be reset.
* Simplify ath9k_allow_beacon_config().
* Handle setting/clearing the SWBA interrupt properly.
* Remove the TSF mangling in IBSS mode, it is not required.
* General code cleanup.
Signed-off-by: Sujith Manoharan <c_manoha@xxxxxxxxxxxxxxxx>
---
drivers/net/wireless/ath/ath9k/ath9k.h | 8 +-
drivers/net/wireless/ath/ath9k/beacon.c | 226 ++++++++++++--------------------
drivers/net/wireless/ath/ath9k/main.c | 24 +---
drivers/net/wireless/ath/ath9k/recv.c | 2 +-
4 files changed, 98 insertions(+), 162 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/ath9k.h b/drivers/net/wireless/ath/ath9k/ath9k.h
index 248925c..a4dd5b1 100644
--- a/drivers/net/wireless/ath/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath/ath9k/ath9k.h
@@ -386,6 +386,7 @@ struct ath_beacon_config {
u16 dtim_period;
u16 bmiss_timeout;
u8 dtim_count;
+ bool enable_beacon;
};
struct ath_beacon {
@@ -412,11 +413,13 @@ struct ath_beacon {
};
void ath_beacon_tasklet(unsigned long data);
-void ath_beacon_config(struct ath_softc *sc, struct ieee80211_vif *vif);
+bool ath9k_allow_beacon_config(struct ath_softc *sc, struct ieee80211_vif *vif);
+void ath9k_beacon_config(struct ath_softc *sc, struct ieee80211_vif *vif,
+ u32 changed);
void ath9k_beacon_assign_slot(struct ath_softc *sc, struct ieee80211_vif *vif);
void ath9k_beacon_remove_slot(struct ath_softc *sc, struct ieee80211_vif *vif);
int ath_beaconq_config(struct ath_softc *sc);
-void ath_set_beacon(struct ath_softc *sc);
+void ath9k_set_beacon(struct ath_softc *sc);
void ath9k_set_beaconing_status(struct ath_softc *sc, bool status);
/*******************/
@@ -619,7 +622,6 @@ enum sc_op_flags {
SC_OP_INVALID,
SC_OP_BEACONS,
SC_OP_RXFLUSH,
- SC_OP_TSF_RESET,
SC_OP_ANI_RUN,
SC_OP_PRIM_STA_VIF,
SC_OP_HW_RESET,
diff --git a/drivers/net/wireless/ath/ath9k/beacon.c b/drivers/net/wireless/ath/ath9k/beacon.c
index 351ded5..a79ec45 100644
--- a/drivers/net/wireless/ath/ath9k/beacon.c
+++ b/drivers/net/wireless/ath/ath9k/beacon.c
@@ -315,7 +315,6 @@ void ath_beacon_tasklet(unsigned long data)
} else if (sc->beacon.bmisscnt >= BSTUCK_THRESH) {
ath_dbg(common, BSTUCK, "beacon is officially stuck\n");
sc->beacon.bmisscnt = 0;
- set_bit(SC_OP_TSF_RESET, &sc->sc_flags);
ieee80211_queue_work(sc->hw, &sc->hw_reset_work);
}
@@ -401,21 +400,16 @@ void ath_beacon_tasklet(unsigned long data)
}
}
-static void ath9k_beacon_init(struct ath_softc *sc,
- u32 next_beacon,
- u32 beacon_period)
+static void ath9k_beacon_init(struct ath_softc *sc, u32 nexttbtt, u32 intval)
{
- if (test_bit(SC_OP_TSF_RESET, &sc->sc_flags)) {
- ath9k_ps_wakeup(sc);
- ath9k_hw_reset_tsf(sc->sc_ah);
- }
-
- ath9k_hw_beaconinit(sc->sc_ah, next_beacon, beacon_period);
+ struct ath_hw *ah = sc->sc_ah;
- if (test_bit(SC_OP_TSF_RESET, &sc->sc_flags)) {
- ath9k_ps_restore(sc);
- clear_bit(SC_OP_TSF_RESET, &sc->sc_flags);
- }
+ ath9k_hw_disable_interrupts(ah);
+ ath9k_hw_reset_tsf(ah);
+ ath9k_hw_beaconinit(ah, nexttbtt, intval);
+ sc->beacon.bmisscnt = 0;
+ ath9k_hw_set_interrupts(ah);
+ ath9k_hw_enable_interrupts(ah);
}
/*
@@ -423,32 +417,28 @@ static void ath9k_beacon_init(struct ath_softc *sc,
* burst together. For the former arrange for the SWBA to be delivered for each
* slot. Slots that are not occupied will generate nothing.
*/
-static void ath_beacon_config_ap(struct ath_softc *sc,
- struct ath_beacon_config *conf)
+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; /* for staggered beacons */
+ intval /= ATH_BCBUF;
nexttbtt = intval;
- /*
- * In AP mode we enable the beacon timers and SWBA interrupts to
- * prepare beacon frames.
- */
- ah->imask |= ATH9K_INT_SWBA;
- ath_beaconq_config(sc);
+ if (conf->enable_beacon)
+ ah->imask |= ATH9K_INT_SWBA;
+ else
+ ah->imask &= ~ATH9K_INT_SWBA;
- /* Set the computed AP beacon timers */
+ ath_dbg(common, BEACON, "AP nexttbtt: %u intval: %u conf_intval: %u\n",
+ nexttbtt, intval, conf->beacon_interval);
- ath9k_hw_disable_interrupts(ah);
- set_bit(SC_OP_TSF_RESET, &sc->sc_flags);
+ ath_beaconq_config(sc);
ath9k_beacon_init(sc, nexttbtt, intval);
- sc->beacon.bmisscnt = 0;
- ath9k_hw_set_interrupts(ah);
- ath9k_hw_enable_interrupts(ah);
}
/*
@@ -459,8 +449,8 @@ static void ath_beacon_config_ap(struct ath_softc *sc,
* we'll receive a BMISS interrupt when we stop seeing beacons from the AP
* we've associated with.
*/
-static void ath_beacon_config_sta(struct ath_softc *sc,
- struct ath_beacon_config *conf)
+static void ath9k_beacon_config_sta(struct ath_softc *sc,
+ struct ath_beacon_config *conf)
{
struct ath_hw *ah = sc->sc_ah;
struct ath_common *common = ath9k_hw_common(ah);
@@ -579,97 +569,66 @@ static void ath_beacon_config_sta(struct ath_softc *sc,
ath9k_hw_enable_interrupts(ah);
}
-static void ath_beacon_config_adhoc(struct ath_softc *sc,
- struct ath_beacon_config *conf)
+static void ath9k_beacon_config_adhoc(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 tsf, intval, nexttbtt;
+ u32 intval, nexttbtt;
ath9k_reset_beacon_status(sc);
- if (!test_bit(SC_OP_BEACONS, &sc->sc_flags))
- ath9k_hw_settsf64(ah, sc->beacon.bc_tstamp);
intval = TU_TO_USEC(conf->beacon_interval);
- tsf = roundup(ath9k_hw_gettsf32(ah) + TU_TO_USEC(FUDGE), intval);
- nexttbtt = tsf + intval;
+ nexttbtt = intval;
- ath_dbg(common, BEACON, "IBSS nexttbtt %u intval %u (%u)\n",
- nexttbtt, intval, conf->beacon_interval);
+ if (conf->enable_beacon)
+ ah->imask |= ATH9K_INT_SWBA;
+ else
+ ah->imask &= ~ATH9K_INT_SWBA;
- /*
- * In IBSS mode enable the beacon timers but only enable SWBA interrupts
- * if we need to manually prepare beacon frames. Otherwise we use a
- * self-linked tx descriptor and let the hardware deal with things.
- */
- ah->imask |= ATH9K_INT_SWBA;
+ ath_dbg(common, BEACON, "IBSS nexttbtt: %u intval: %u conf_intval: %u\n",
+ nexttbtt, intval, conf->beacon_interval);
ath_beaconq_config(sc);
-
- /* Set the computed ADHOC beacon timers */
-
- ath9k_hw_disable_interrupts(ah);
ath9k_beacon_init(sc, nexttbtt, intval);
- sc->beacon.bmisscnt = 0;
-
- ath9k_hw_set_interrupts(ah);
- ath9k_hw_enable_interrupts(ah);
}
-static bool ath9k_allow_beacon_config(struct ath_softc *sc,
- struct ieee80211_vif *vif)
+bool ath9k_allow_beacon_config(struct ath_softc *sc, struct ieee80211_vif *vif)
{
- struct ath_beacon_config *cur_conf = &sc->cur_beacon_conf;
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
- struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
struct ath_vif *avp = (void *)vif->drv_priv;
- /*
- * Can not have different beacon interval on multiple
- * AP interface case
- */
- if ((sc->sc_ah->opmode == NL80211_IFTYPE_AP) &&
- (sc->nbcnvifs > 1) &&
- (vif->type == NL80211_IFTYPE_AP) &&
- (cur_conf->beacon_interval != bss_conf->beacon_int)) {
- ath_dbg(common, CONFIG,
- "Changing beacon interval of multiple AP interfaces !\n");
- return false;
- }
- /*
- * Can not configure station vif's beacon config
- * while on AP opmode
- */
- if ((sc->sc_ah->opmode == NL80211_IFTYPE_AP) &&
- (vif->type != NL80211_IFTYPE_AP)) {
- ath_dbg(common, CONFIG,
- "STA vif's beacon not allowed on AP mode\n");
- return false;
+ if (sc->sc_ah->opmode == NL80211_IFTYPE_AP) {
+ if ((vif->type != NL80211_IFTYPE_AP) ||
+ (sc->nbcnvifs > 1)) {
+ ath_dbg(common, CONFIG,
+ "An AP interface is already present !\n");
+ return false;
+ }
}
- /*
- * Do not allow beacon config if HW was already configured
- * with another STA vif
- */
- if ((sc->sc_ah->opmode == NL80211_IFTYPE_STATION) &&
- (vif->type == NL80211_IFTYPE_STATION) &&
- test_bit(SC_OP_BEACONS, &sc->sc_flags) &&
- !avp->primary_sta_vif) {
- ath_dbg(common, CONFIG,
- "Beacon already configured for a station interface\n");
- return false;
+
+ if (sc->sc_ah->opmode == NL80211_IFTYPE_STATION) {
+ if ((vif->type == NL80211_IFTYPE_STATION) &&
+ test_bit(SC_OP_BEACONS, &sc->sc_flags) &&
+ !avp->primary_sta_vif) {
+ ath_dbg(common, CONFIG,
+ "Beacon already configured for a station interface\n");
+ return false;
+ }
}
+
return true;
}
-void ath_beacon_config(struct ath_softc *sc, struct ieee80211_vif *vif)
+static void ath9k_cache_beacon_config(struct ath_softc *sc,
+ struct ieee80211_bss_conf *bss_conf)
{
+ struct ath_common *common = ath9k_hw_common(sc->sc_ah);
struct ath_beacon_config *cur_conf = &sc->cur_beacon_conf;
- struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
- if (!ath9k_allow_beacon_config(sc, vif))
- return;
+ ath_dbg(common, BEACON,
+ "Caching beacon data for BSS: %pM\n", bss_conf->bssid);
- /* Setup the beacon configuration parameters */
cur_conf->beacon_interval = bss_conf->beacon_int;
cur_conf->dtim_period = bss_conf->dtim_period;
cur_conf->listen_interval = 1;
@@ -694,73 +653,62 @@ void ath_beacon_config(struct ath_softc *sc, struct ieee80211_vif *vif)
if (cur_conf->dtim_period == 0)
cur_conf->dtim_period = 1;
- ath_set_beacon(sc);
}
-static bool ath_has_valid_bslot(struct ath_softc *sc)
+void ath9k_beacon_config(struct ath_softc *sc, struct ieee80211_vif *vif,
+ u32 changed)
{
- struct ath_vif *avp;
- int slot;
- bool found = false;
+ struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
+ struct ath_beacon_config *cur_conf = &sc->cur_beacon_conf;
- for (slot = 0; slot < ATH_BCBUF; slot++) {
- if (sc->beacon.bslot[slot]) {
- avp = (void *)sc->beacon.bslot[slot]->drv_priv;
- if (avp->is_bslot_active) {
- found = true;
- break;
+ 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);
+ } else {
+ /*
+ * Take care of multiple interfaces when
+ * 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, bss_conf);
}
}
+
+ if (cur_conf->beacon_interval) {
+ ath9k_set_beacon(sc);
+
+ if (cur_conf->enable_beacon)
+ set_bit(SC_OP_BEACONS, &sc->sc_flags);
+ else
+ clear_bit(SC_OP_BEACONS, &sc->sc_flags);
+ }
}
- return found;
}
-
-void ath_set_beacon(struct ath_softc *sc)
+void ath9k_set_beacon(struct ath_softc *sc)
{
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
struct ath_beacon_config *cur_conf = &sc->cur_beacon_conf;
switch (sc->sc_ah->opmode) {
case NL80211_IFTYPE_AP:
- if (ath_has_valid_bslot(sc))
- ath_beacon_config_ap(sc, cur_conf);
+ ath9k_beacon_config_ap(sc, cur_conf);
break;
case NL80211_IFTYPE_ADHOC:
case NL80211_IFTYPE_MESH_POINT:
- ath_beacon_config_adhoc(sc, cur_conf);
+ ath9k_beacon_config_adhoc(sc, cur_conf);
break;
case NL80211_IFTYPE_STATION:
- ath_beacon_config_sta(sc, cur_conf);
+ ath9k_beacon_config_sta(sc, cur_conf);
break;
default:
ath_dbg(common, CONFIG, "Unsupported beaconing mode\n");
return;
}
-
- set_bit(SC_OP_BEACONS, &sc->sc_flags);
-}
-
-void ath9k_set_beaconing_status(struct ath_softc *sc, bool status)
-{
- struct ath_hw *ah = sc->sc_ah;
-
- if (!ath_has_valid_bslot(sc)) {
- clear_bit(SC_OP_BEACONS, &sc->sc_flags);
- return;
- }
-
- ath9k_ps_wakeup(sc);
- if (status) {
- /* Re-enable beaconing */
- ah->imask |= ATH9K_INT_SWBA;
- ath9k_hw_set_interrupts(ah);
- } else {
- /* Disable SWBA interrupt */
- ah->imask &= ~ATH9K_INT_SWBA;
- ath9k_hw_set_interrupts(ah);
- tasklet_kill(&sc->bcon_tasklet);
- ath9k_hw_stop_dma_queue(ah, sc->beacon.beaconq);
- }
- ath9k_ps_restore(sc);
}
diff --git a/drivers/net/wireless/ath/ath9k/main.c b/drivers/net/wireless/ath/ath9k/main.c
index 80348d8..6a7dfbb 100644
--- a/drivers/net/wireless/ath/ath9k/main.c
+++ b/drivers/net/wireless/ath/ath9k/main.c
@@ -236,7 +236,7 @@ static bool ath_complete_reset(struct ath_softc *sc, bool start)
if (!test_bit(SC_OP_BEACONS, &sc->sc_flags))
goto work;
- ath_set_beacon(sc);
+ ath9k_set_beacon(sc);
if (ah->opmode == NL80211_IFTYPE_STATION &&
test_bit(SC_OP_PRIM_STA_VIF, &sc->sc_flags)) {
@@ -1532,24 +1532,10 @@ static void ath9k_bss_info_changed(struct ieee80211_hw *hw,
}
}
- /*
- * In case of AP mode, the HW TSF has to be reset
- * when the beacon interval changes.
- */
- if ((changed & BSS_CHANGED_BEACON_INT) &&
- (vif->type == NL80211_IFTYPE_AP))
- set_bit(SC_OP_TSF_RESET, &sc->sc_flags);
-
- /* Configure beaconing (AP, IBSS, MESH) */
- if (ath9k_uses_beacons(vif->type) &&
- ((changed & BSS_CHANGED_BEACON) ||
- (changed & BSS_CHANGED_BEACON_ENABLED) ||
- (changed & BSS_CHANGED_BEACON_INT))) {
- ath9k_set_beaconing_status(sc, false);
- if (!bss_conf->enable_beacon)
- avp->is_bslot_active = false;
- ath_beacon_config(sc, vif);
- ath9k_set_beaconing_status(sc, true);
+ if ((changed & BSS_CHANGED_BEACON_ENABLED) ||
+ (changed & BSS_CHANGED_BEACON_INT)) {
+ if (ath9k_allow_beacon_config(sc, vif))
+ ath9k_beacon_config(sc, vif, changed);
}
if (changed & BSS_CHANGED_ERP_SLOT) {
diff --git a/drivers/net/wireless/ath/ath9k/recv.c b/drivers/net/wireless/ath/ath9k/recv.c
index 11f3703..12aca02 100644
--- a/drivers/net/wireless/ath/ath9k/recv.c
+++ b/drivers/net/wireless/ath/ath9k/recv.c
@@ -553,7 +553,7 @@ static void ath_rx_ps_beacon(struct ath_softc *sc, struct sk_buff *skb)
sc->ps_flags &= ~PS_BEACON_SYNC;
ath_dbg(common, PS,
"Reconfigure Beacon timers based on timestamp from the AP\n");
- ath_set_beacon(sc);
+ ath9k_set_beacon(sc);
}
if (ath_beacon_dtim_pending_cab(skb)) {
--
1.7.11.2
--
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