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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.c205
1 files changed, 119 insertions, 86 deletions
diff --git a/drivers/net/wireless/ath/ath9k/beacon.c b/drivers/net/wireless/ath/ath9k/beacon.c
index 19891e7d49ae..6d2a545fc35e 100644
--- a/drivers/net/wireless/ath/ath9k/beacon.c
+++ b/drivers/net/wireless/ath/ath9k/beacon.c
@@ -28,7 +28,7 @@ int ath_beaconq_config(struct ath_softc *sc)
struct ath_hw *ah = sc->sc_ah;
struct ath_common *common = ath9k_hw_common(ah);
struct ath9k_tx_queue_info qi, qi_be;
- int qnum;
+ struct ath_txq *txq;
ath9k_hw_get_txq_props(ah, sc->beacon.beaconq, &qi);
if (sc->sc_ah->opmode == NL80211_IFTYPE_AP) {
@@ -38,16 +38,16 @@ int ath_beaconq_config(struct ath_softc *sc)
qi.tqi_cwmax = 0;
} else {
/* Adhoc mode; important thing is to use 2x cwmin. */
- qnum = sc->tx.hwq_map[WME_AC_BE];
- ath9k_hw_get_txq_props(ah, qnum, &qi_be);
+ txq = sc->tx.txq_map[WME_AC_BE];
+ ath9k_hw_get_txq_props(ah, txq->axq_qnum, &qi_be);
qi.tqi_aifs = qi_be.tqi_aifs;
qi.tqi_cwmin = 4*qi_be.tqi_cwmin;
qi.tqi_cwmax = qi_be.tqi_cwmax;
}
if (!ath9k_hw_set_txq_props(ah, sc->beacon.beaconq, &qi)) {
- ath_print(common, ATH_DBG_FATAL,
- "Unable to update h/w beacon queue parameters\n");
+ ath_err(common,
+ "Unable to update h/w beacon queue parameters\n");
return 0;
} else {
ath9k_hw_resettxqueue(ah, sc->beacon.beaconq);
@@ -103,17 +103,35 @@ static void ath_beacon_setup(struct ath_softc *sc, struct ath_vif *avp,
memset(series, 0, sizeof(struct ath9k_11n_rate_series) * 4);
series[0].Tries = 1;
series[0].Rate = rate;
- series[0].ChSel = common->tx_chainmask;
+ series[0].ChSel = ath_txchainmask_reduction(sc,
+ common->tx_chainmask, series[0].Rate);
series[0].RateFlags = (ctsrate) ? ATH9K_RATESERIES_RTS_CTS : 0;
ath9k_hw_set11n_ratescenario(ah, ds, ds, 0, ctsrate, ctsduration,
series, 4, 0);
}
+static void ath_tx_cabq(struct ieee80211_hw *hw, struct sk_buff *skb)
+{
+ struct ath_softc *sc = hw->priv;
+ struct ath_common *common = ath9k_hw_common(sc->sc_ah);
+ struct ath_tx_control txctl;
+
+ memset(&txctl, 0, sizeof(struct ath_tx_control));
+ txctl.txq = sc->beacon.cabq;
+
+ ath_dbg(common, ATH_DBG_XMIT,
+ "transmitting CABQ packet, skb: %p\n", skb);
+
+ if (ath_tx_start(hw, skb, &txctl) != 0) {
+ ath_dbg(common, ATH_DBG_XMIT, "CABQ TX failed\n");
+ dev_kfree_skb_any(skb);
+ }
+}
+
static struct ath_buf *ath_beacon_generate(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
- struct ath_wiphy *aphy = hw->priv;
- struct ath_softc *sc = aphy->sc;
+ struct ath_softc *sc = hw->priv;
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
struct ath_buf *bf;
struct ath_vif *avp;
@@ -122,13 +140,10 @@ static struct ath_buf *ath_beacon_generate(struct ieee80211_hw *hw,
struct ieee80211_tx_info *info;
int cabq_depth;
- if (aphy->state != ATH_WIPHY_ACTIVE)
- return NULL;
-
avp = (void *)vif->drv_priv;
cabq = sc->beacon.cabq;
- if (avp->av_bcbuf == NULL)
+ if ((avp->av_bcbuf == NULL) || !avp->is_bslot_active)
return NULL;
/* Release the old beacon first */
@@ -169,8 +184,7 @@ static struct ath_buf *ath_beacon_generate(struct ieee80211_hw *hw,
dev_kfree_skb_any(skb);
bf->bf_mpdu = NULL;
bf->bf_buf_addr = 0;
- ath_print(common, ATH_DBG_FATAL,
- "dma_mapping_error on beaconing\n");
+ ath_err(common, "dma_mapping_error on beaconing\n");
return NULL;
}
@@ -190,8 +204,8 @@ static struct ath_buf *ath_beacon_generate(struct ieee80211_hw *hw,
if (skb && cabq_depth) {
if (sc->nvifs > 1) {
- ath_print(common, ATH_DBG_BEACON,
- "Flushing previous cabq traffic\n");
+ ath_dbg(common, ATH_DBG_BEACON,
+ "Flushing previous cabq traffic\n");
ath_draintxq(sc, cabq, false);
}
}
@@ -206,13 +220,13 @@ static struct ath_buf *ath_beacon_generate(struct ieee80211_hw *hw,
return bf;
}
-int ath_beacon_alloc(struct ath_wiphy *aphy, struct ieee80211_vif *vif)
+int ath_beacon_alloc(struct ath_softc *sc, struct ieee80211_vif *vif)
{
- struct ath_softc *sc = aphy->sc;
struct ath_common *common = ath9k_hw_common(sc->sc_ah);
struct ath_vif *avp;
struct ath_buf *bf;
struct sk_buff *skb;
+ struct ath_beacon_config *cur_conf = &sc->cur_beacon_conf;
__le64 tstamp;
avp = (void *)vif->drv_priv;
@@ -225,9 +239,7 @@ int ath_beacon_alloc(struct ath_wiphy *aphy, struct ieee80211_vif *vif)
struct ath_buf, list);
list_del(&avp->av_bcbuf->list);
- if (sc->sc_ah->opmode == NL80211_IFTYPE_AP ||
- sc->sc_ah->opmode == NL80211_IFTYPE_ADHOC ||
- sc->sc_ah->opmode == NL80211_IFTYPE_MESH_POINT) {
+ if (ath9k_uses_beacons(vif->type)) {
int slot;
/*
* Assign the vif to a beacon xmit slot. As
@@ -237,6 +249,7 @@ int ath_beacon_alloc(struct ath_wiphy *aphy, struct ieee80211_vif *vif)
for (slot = 0; slot < ATH_BCBUF; slot++)
if (sc->beacon.bslot[slot] == NULL) {
avp->av_bslot = slot;
+ avp->is_bslot_active = false;
/* NB: keep looking for a double slot */
if (slot == 0 || !sc->beacon.bslot[slot-1])
@@ -244,7 +257,6 @@ int ath_beacon_alloc(struct ath_wiphy *aphy, struct ieee80211_vif *vif)
}
BUG_ON(sc->beacon.bslot[avp->av_bslot] != NULL);
sc->beacon.bslot[avp->av_bslot] = vif;
- sc->beacon.bslot_aphy[avp->av_bslot] = aphy;
sc->nbcnvifs++;
}
}
@@ -262,10 +274,8 @@ int ath_beacon_alloc(struct ath_wiphy *aphy, struct ieee80211_vif *vif)
/* NB: the beacon data buffer must be 32-bit aligned. */
skb = ieee80211_beacon_get(sc->hw, vif);
- if (skb == NULL) {
- ath_print(common, ATH_DBG_BEACON, "cannot get skb\n");
+ if (skb == NULL)
return -ENOMEM;
- }
tstamp = ((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp;
sc->beacon.bc_tstamp = le64_to_cpu(tstamp);
@@ -274,7 +284,7 @@ int ath_beacon_alloc(struct ath_wiphy *aphy, struct ieee80211_vif *vif)
u64 tsfadjust;
int intval;
- intval = sc->beacon_interval ? : ATH_DEFAULT_BINTVAL;
+ intval = cur_conf->beacon_interval ? : ATH_DEFAULT_BINTVAL;
/*
* Calculate the TSF offset for this beacon slot, i.e., the
@@ -287,10 +297,9 @@ int ath_beacon_alloc(struct ath_wiphy *aphy, struct ieee80211_vif *vif)
tsfadjust = intval * avp->av_bslot / ATH_BCBUF;
avp->tsf_adjust = cpu_to_le64(TU_TO_USEC(tsfadjust));
- ath_print(common, ATH_DBG_BEACON,
- "stagger beacons, bslot %d intval "
- "%u tsfadjust %llu\n",
- avp->av_bslot, intval, (unsigned long long)tsfadjust);
+ ath_dbg(common, ATH_DBG_BEACON,
+ "stagger beacons, bslot %d intval %u tsfadjust %llu\n",
+ avp->av_bslot, intval, (unsigned long long)tsfadjust);
((struct ieee80211_mgmt *)skb->data)->u.beacon.timestamp =
avp->tsf_adjust;
@@ -304,10 +313,10 @@ int ath_beacon_alloc(struct ath_wiphy *aphy, struct ieee80211_vif *vif)
dev_kfree_skb_any(skb);
bf->bf_mpdu = NULL;
bf->bf_buf_addr = 0;
- ath_print(common, ATH_DBG_FATAL,
- "dma_mapping_error on beacon alloc\n");
+ ath_err(common, "dma_mapping_error on beacon alloc\n");
return -ENOMEM;
}
+ avp->is_bslot_active = true;
return 0;
}
@@ -319,7 +328,6 @@ void ath_beacon_return(struct ath_softc *sc, struct ath_vif *avp)
if (avp->av_bslot != -1) {
sc->beacon.bslot[avp->av_bslot] = NULL;
- sc->beacon.bslot_aphy[avp->av_bslot] = NULL;
sc->nbcnvifs--;
}
@@ -341,11 +349,11 @@ void ath_beacon_return(struct ath_softc *sc, struct ath_vif *avp)
void ath_beacon_tasklet(unsigned long data)
{
struct ath_softc *sc = (struct ath_softc *)data;
+ 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);
struct ath_buf *bf = NULL;
struct ieee80211_vif *vif;
- struct ath_wiphy *aphy;
int slot;
u32 bfaddr, bc = 0, tsftu;
u64 tsf;
@@ -362,13 +370,14 @@ void ath_beacon_tasklet(unsigned long data)
sc->beacon.bmisscnt++;
if (sc->beacon.bmisscnt < BSTUCK_THRESH) {
- ath_print(common, ATH_DBG_BSTUCK,
- "missed %u consecutive beacons\n",
- sc->beacon.bmisscnt);
+ ath_dbg(common, ATH_DBG_BSTUCK,
+ "missed %u consecutive beacons\n",
+ sc->beacon.bmisscnt);
+ ath9k_hw_stop_dma_queue(ah, sc->beacon.beaconq);
ath9k_hw_bstuck_nfcal(ah);
} else if (sc->beacon.bmisscnt >= BSTUCK_THRESH) {
- ath_print(common, ATH_DBG_BSTUCK,
- "beacon is officially stuck\n");
+ ath_dbg(common, ATH_DBG_BSTUCK,
+ "beacon is officially stuck\n");
sc->sc_flags |= SC_OP_TSF_RESET;
ath_reset(sc, true);
}
@@ -377,9 +386,9 @@ void ath_beacon_tasklet(unsigned long data)
}
if (sc->beacon.bmisscnt != 0) {
- ath_print(common, ATH_DBG_BSTUCK,
- "resume beacon xmit after %u misses\n",
- sc->beacon.bmisscnt);
+ ath_dbg(common, ATH_DBG_BSTUCK,
+ "resume beacon xmit after %u misses\n",
+ sc->beacon.bmisscnt);
sc->beacon.bmisscnt = 0;
}
@@ -389,7 +398,7 @@ void ath_beacon_tasklet(unsigned long data)
* on the tsf to safeguard against missing an swba.
*/
- intval = sc->beacon_interval ? : ATH_DEFAULT_BINTVAL;
+ intval = cur_conf->beacon_interval ? : ATH_DEFAULT_BINTVAL;
tsf = ath9k_hw_gettsf64(ah);
tsftu = TSF_TO_TU(tsf>>32, tsf);
@@ -403,15 +412,14 @@ void ath_beacon_tasklet(unsigned long data)
*/
slot = ATH_BCBUF - slot - 1;
vif = sc->beacon.bslot[slot];
- aphy = sc->beacon.bslot_aphy[slot];
- ath_print(common, ATH_DBG_BEACON,
- "slot %d [tsf %llu tsftu %u intval %u] vif %p\n",
- slot, tsf, tsftu, intval, vif);
+ ath_dbg(common, ATH_DBG_BEACON,
+ "slot %d [tsf %llu tsftu %u intval %u] vif %p\n",
+ slot, tsf, tsftu, intval, vif);
bfaddr = 0;
if (vif) {
- bf = ath_beacon_generate(aphy->hw, vif);
+ bf = ath_beacon_generate(sc->hw, vif);
if (bf != NULL) {
bfaddr = bf->bf_daddr;
bc = 1;
@@ -443,16 +451,6 @@ void ath_beacon_tasklet(unsigned long data)
sc->beacon.updateslot = OK;
}
if (bfaddr != 0) {
- /*
- * Stop any current dma and put the new frame(s) on the queue.
- * This should never fail since we check above that no frames
- * are still pending on the queue.
- */
- if (!ath9k_hw_stoptxdma(ah, sc->beacon.beaconq)) {
- ath_print(common, ATH_DBG_FATAL,
- "beacon queue %u did not stop?\n", sc->beacon.beaconq);
- }
-
/* NB: cabq traffic should already be queued and primed */
ath9k_hw_puttxbuf(ah, sc->beacon.beaconq, bfaddr);
ath9k_hw_txstart(ah, sc->beacon.beaconq);
@@ -503,7 +501,7 @@ static void ath_beacon_config_ap(struct ath_softc *sc,
/* Set the computed AP beacon timers */
- ath9k_hw_set_interrupts(ah, 0);
+ ath9k_hw_disable_interrupts(ah);
ath9k_beacon_init(sc, nexttbtt, intval);
sc->beacon.bmisscnt = 0;
ath9k_hw_set_interrupts(ah, ah->imask);
@@ -536,8 +534,8 @@ static void ath_beacon_config_sta(struct ath_softc *sc,
/* No need to configure beacon if we are not associated */
if (!common->curaid) {
- ath_print(common, ATH_DBG_BEACON,
- "STA is not yet associated..skipping beacon config\n");
+ ath_dbg(common, ATH_DBG_BEACON,
+ "STA is not yet associated..skipping beacon config\n");
return;
}
@@ -549,8 +547,6 @@ static void ath_beacon_config_sta(struct ath_softc *sc,
* last beacon we received (which may be none).
*/
dtimperiod = conf->dtim_period;
- if (dtimperiod <= 0) /* NB: 0 if not known */
- dtimperiod = 1;
dtimcount = conf->dtim_count;
if (dtimcount >= dtimperiod) /* NB: sanity check */
dtimcount = 0;
@@ -558,8 +554,6 @@ static void ath_beacon_config_sta(struct ath_softc *sc,
cfpcount = 0;
sleepduration = conf->listen_interval * intval;
- if (sleepduration <= 0)
- sleepduration = intval;
/*
* Pull nexttbtt forward to reflect the current
@@ -630,23 +624,22 @@ static void ath_beacon_config_sta(struct ath_softc *sc,
/* TSF out of range threshold fixed at 1 second */
bs.bs_tsfoor_threshold = ATH9K_TSFOOR_THRESHOLD;
- ath_print(common, ATH_DBG_BEACON, "tsf: %llu tsftu: %u\n", tsf, tsftu);
- ath_print(common, ATH_DBG_BEACON,
- "bmiss: %u sleep: %u cfp-period: %u maxdur: %u next: %u\n",
- bs.bs_bmissthreshold, bs.bs_sleepduration,
- bs.bs_cfpperiod, bs.bs_cfpmaxduration, bs.bs_cfpnext);
+ ath_dbg(common, ATH_DBG_BEACON, "tsf: %llu tsftu: %u\n", tsf, tsftu);
+ ath_dbg(common, ATH_DBG_BEACON,
+ "bmiss: %u sleep: %u cfp-period: %u maxdur: %u next: %u\n",
+ bs.bs_bmissthreshold, bs.bs_sleepduration,
+ bs.bs_cfpperiod, bs.bs_cfpmaxduration, bs.bs_cfpnext);
/* Set the computed STA beacon timers */
- ath9k_hw_set_interrupts(ah, 0);
+ ath9k_hw_disable_interrupts(ah);
ath9k_hw_set_sta_beacon_timers(ah, &bs);
ah->imask |= ATH9K_INT_BMISS;
ath9k_hw_set_interrupts(ah, ah->imask);
}
static void ath_beacon_config_adhoc(struct ath_softc *sc,
- struct ath_beacon_config *conf,
- struct ieee80211_vif *vif)
+ struct ath_beacon_config *conf)
{
struct ath_hw *ah = sc->sc_ah;
struct ath_common *common = ath9k_hw_common(ah);
@@ -670,9 +663,9 @@ static void ath_beacon_config_adhoc(struct ath_softc *sc,
nexttbtt += intval;
} while (nexttbtt < tsftu);
- ath_print(common, ATH_DBG_BEACON,
- "IBSS nexttbtt %u intval %u (%u)\n",
- nexttbtt, intval, conf->beacon_interval);
+ ath_dbg(common, ATH_DBG_BEACON,
+ "IBSS nexttbtt %u intval %u (%u)\n",
+ nexttbtt, intval, conf->beacon_interval);
/*
* In IBSS mode enable the beacon timers but only enable SWBA interrupts
@@ -686,7 +679,7 @@ static void ath_beacon_config_adhoc(struct ath_softc *sc,
/* Set the computed ADHOC beacon timers */
- ath9k_hw_set_interrupts(ah, 0);
+ ath9k_hw_disable_interrupts(ah);
ath9k_beacon_init(sc, nexttbtt, intval);
sc->beacon.bmisscnt = 0;
ath9k_hw_set_interrupts(ah, ah->imask);
@@ -701,19 +694,18 @@ void ath_beacon_config(struct ath_softc *sc, struct ieee80211_vif *vif)
/* Setup the beacon configuration parameters */
if (vif) {
struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
-
iftype = vif->type;
-
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->bmiss_timeout =
- ATH_DEFAULT_BMISS_LIMIT * cur_conf->beacon_interval;
} else {
iftype = sc->sc_ah->opmode;
}
+ cur_conf->listen_interval = 1;
+ cur_conf->dtim_count = 1;
+ cur_conf->bmiss_timeout =
+ ATH_DEFAULT_BMISS_LIMIT * cur_conf->beacon_interval;
+
/*
* It looks like mac80211 may end up using beacon interval of zero in
* some cases (at least for mesh point). Avoid getting into an
@@ -723,22 +715,63 @@ void ath_beacon_config(struct ath_softc *sc, struct ieee80211_vif *vif)
if (cur_conf->beacon_interval == 0)
cur_conf->beacon_interval = 100;
+ /*
+ * We don't parse dtim period from mac80211 during the driver
+ * initialization as it breaks association with hidden-ssid
+ * AP and it causes latency in roaming
+ */
+ if (cur_conf->dtim_period == 0)
+ cur_conf->dtim_period = 1;
+
switch (iftype) {
case NL80211_IFTYPE_AP:
ath_beacon_config_ap(sc, cur_conf);
break;
case NL80211_IFTYPE_ADHOC:
case NL80211_IFTYPE_MESH_POINT:
- ath_beacon_config_adhoc(sc, cur_conf, vif);
+ ath_beacon_config_adhoc(sc, cur_conf);
break;
case NL80211_IFTYPE_STATION:
ath_beacon_config_sta(sc, cur_conf);
break;
default:
- ath_print(common, ATH_DBG_CONFIG,
- "Unsupported beaconing mode\n");
+ ath_dbg(common, ATH_DBG_CONFIG,
+ "Unsupported beaconing mode\n");
return;
}
sc->sc_flags |= SC_OP_BEACONS;
}
+
+void ath9k_set_beaconing_status(struct ath_softc *sc, bool status)
+{
+ struct ath_hw *ah = sc->sc_ah;
+ struct ath_vif *avp;
+ int slot;
+ bool found = false;
+
+ ath9k_ps_wakeup(sc);
+ if (status) {
+ 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 (found) {
+ /* Re-enable beaconing */
+ ah->imask |= ATH9K_INT_SWBA;
+ ath9k_hw_set_interrupts(ah, ah->imask);
+ }
+ } else {
+ /* Disable SWBA interrupt */
+ ah->imask &= ~ATH9K_INT_SWBA;
+ ath9k_hw_set_interrupts(ah, ah->imask);
+ tasklet_kill(&sc->bcon_tasklet);
+ ath9k_hw_stop_dma_queue(ah, sc->beacon.beaconq);
+ }
+ ath9k_ps_restore(sc);
+}
generated by cgit v1.2.3 (git 2.0.4) at 2024-06-04 06:28:44 +0000