From: Sujith Manoharan <Sujith.Manoharan@xxxxxxxxxxx>
Beacon transmission is now handled through a slot mechanism.
This allows multiple beaconing interfaces to be be present.
Signed-off-by: Sujith Manoharan <Sujith.Manoharan@xxxxxxxxxxx>
---
drivers/net/wireless/ath/ath9k/htc.h | 13 ++-
drivers/net/wireless/ath/ath9k/htc_drv_beacon.c | 126 ++++++++++++++++++++---
drivers/net/wireless/ath/ath9k/htc_drv_init.c | 5 +-
drivers/net/wireless/ath/ath9k/htc_drv_main.c | 12 ++-
drivers/net/wireless/ath/ath9k/wmi.c | 4 +-
5 files changed, 140 insertions(+), 20 deletions(-)
diff --git a/drivers/net/wireless/ath/ath9k/htc.h b/drivers/net/wireless/ath/ath9k/htc.h
index 4c11ffe..6b3f0f3 100644
--- a/drivers/net/wireless/ath/ath9k/htc.h
+++ b/drivers/net/wireless/ath/ath9k/htc.h
@@ -243,6 +243,7 @@ struct ath9k_htc_target_stats {
struct ath9k_htc_vif {
u8 index;
u16 seq_no;
+ int bslot;
};
struct ath9k_vif_iter_data {
@@ -350,10 +351,14 @@ struct ath_led {
int brightness;
};
+#define BSTUCK_THRESHOLD 10
+
struct htc_beacon_config {
+ struct ieee80211_vif *bslot[ATH9K_HTC_MAX_BCN_VIF];
u16 beacon_interval;
u16 dtim_period;
u16 bmiss_timeout;
+ u32 bmiss_cnt;
};
struct ath_btcoex {
@@ -409,7 +414,6 @@ struct ath9k_htc_priv {
u16 txpowlimit;
u16 nvifs;
u16 nstations;
- u32 bmiss_cnt;
bool rearm_ani;
bool reconfig_beacon;
@@ -420,7 +424,6 @@ struct ath9k_htc_priv {
bool tx_queues_stop;
spinlock_t tx_lock;
- struct ieee80211_vif *vif;
struct htc_beacon_config cur_beacon_conf;
unsigned int rxfilter;
struct tasklet_struct swba_tasklet;
@@ -468,11 +471,15 @@ static inline void ath_read_cachesize(struct ath_common *common, int *csz)
void ath9k_htc_reset(struct ath9k_htc_priv *priv);
+void ath9k_htc_assign_bslot(struct ath9k_htc_priv *priv,
+ struct ieee80211_vif *vif);
+void ath9k_htc_remove_bslot(struct ath9k_htc_priv *priv,
+ struct ieee80211_vif *vif);
void ath9k_htc_beaconq_config(struct ath9k_htc_priv *priv);
void ath9k_htc_beacon_config(struct ath9k_htc_priv *priv,
struct ieee80211_vif *vif);
void ath9k_htc_beacon_reconfig(struct ath9k_htc_priv *priv);
-void ath9k_htc_swba(struct ath9k_htc_priv *priv, u8 beacon_pending);
+void ath9k_htc_swba(struct ath9k_htc_priv *priv);
void ath9k_htc_rxep(void *priv, struct sk_buff *skb,
enum htc_endpoint_id ep_id);
diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_beacon.c b/drivers/net/wireless/ath/ath9k/htc_drv_beacon.c
index e897a56..b4431a9 100644
--- a/drivers/net/wireless/ath/ath9k/htc_drv_beacon.c
+++ b/drivers/net/wireless/ath/ath9k/htc_drv_beacon.c
@@ -173,12 +173,14 @@ static void ath9k_htc_beacon_config_ap(struct ath9k_htc_priv *priv,
imask |= ATH9K_INT_SWBA;
ath_dbg(common, ATH_DBG_CONFIG,
- "AP Beacon config, intval: %d, nexttbtt: %u imask: 0x%x\n",
- bss_conf->beacon_interval, nexttbtt, imask);
+ "AP Beacon config, intval: %d, nexttbtt: %u "
+ "imask: 0x%x, tsf_reset: %d\n",
+ bss_conf->beacon_interval, nexttbtt, imask,
+ !!(intval & ATH9K_BEACON_RESET_TSF));
WMI_CMD(WMI_DISABLE_INTR_CMDID);
ath9k_hw_beaconinit(priv->ah, nexttbtt, intval);
- priv->bmiss_cnt = 0;
+ priv->cur_beacon_conf.bmiss_cnt = 0;
htc_imask = cpu_to_be32(imask);
WMI_CMD_BUF(WMI_ENABLE_INTR_CMDID, &htc_imask);
}
@@ -205,7 +207,7 @@ static void ath9k_htc_beacon_config_adhoc(struct ath9k_htc_priv *priv,
WMI_CMD(WMI_DISABLE_INTR_CMDID);
ath9k_hw_beaconinit(priv->ah, nexttbtt, intval);
- priv->bmiss_cnt = 0;
+ priv->cur_beacon_conf.bmiss_cnt = 0;
htc_imask = cpu_to_be32(imask);
WMI_CMD_BUF(WMI_ENABLE_INTR_CMDID, &htc_imask);
}
@@ -216,9 +218,11 @@ void ath9k_htc_beaconep(void *drv_priv, struct sk_buff *skb,
dev_kfree_skb_any(skb);
}
-void ath9k_htc_swba(struct ath9k_htc_priv *priv, u8 beacon_pending)
+static void ath9k_htc_send_beacon(struct ath9k_htc_priv *priv,
+ int slot)
{
- struct ath9k_htc_vif *avp = (void *)priv->vif->drv_priv;
+ struct ieee80211_vif *vif;
+ struct ath9k_htc_vif *avp;
struct tx_beacon_header beacon_hdr;
struct ath9k_htc_tx_ctl tx_ctl;
struct ieee80211_tx_info *info;
@@ -228,21 +232,18 @@ void ath9k_htc_swba(struct ath9k_htc_priv *priv, u8 beacon_pending)
memset(&beacon_hdr, 0, sizeof(struct tx_beacon_header));
memset(&tx_ctl, 0, sizeof(struct ath9k_htc_tx_ctl));
- /* FIXME: Handle BMISS */
- if (beacon_pending != 0) {
- priv->bmiss_cnt++;
- return;
- }
-
spin_lock_bh(&priv->beacon_lock);
+ vif = priv->cur_beacon_conf.bslot[slot];
+ avp = (struct ath9k_htc_vif *)vif->drv_priv;
+
if (unlikely(priv->op_flags & OP_SCANNING)) {
spin_unlock_bh(&priv->beacon_lock);
return;
}
/* Get a new beacon */
- beacon = ieee80211_beacon_get(priv->hw, priv->vif);
+ beacon = ieee80211_beacon_get(priv->hw, vif);
if (!beacon) {
spin_unlock_bh(&priv->beacon_lock);
return;
@@ -267,6 +268,69 @@ void ath9k_htc_swba(struct ath9k_htc_priv *priv, u8 beacon_pending)
spin_unlock_bh(&priv->beacon_lock);
}
+static int ath9k_htc_choose_bslot(struct ath9k_htc_priv *priv)
+{
+ struct ath_common *common = ath9k_hw_common(priv->ah);
+ unsigned long flags;
+ u64 tsf;
+ u32 tsftu;
+ u16 intval;
+ int slot;
+
+ intval = priv->cur_beacon_conf.beacon_interval & ATH9K_BEACON_PERIOD;
+
+ spin_lock_irqsave(&priv->wmi->wmi_lock, flags);
+ tsf = priv->wmi->tsf;
+ spin_unlock_irqrestore(&priv->wmi->wmi_lock, flags);
+
+ tsftu = TSF_TO_TU(tsf >> 32, tsf);
+ slot = ((tsftu % intval) * ATH9K_HTC_MAX_BCN_VIF) / intval;
+ slot = ATH9K_HTC_MAX_BCN_VIF - slot - 1;
+
+ ath_dbg(common, ATH_DBG_BEACON,
+ "Choose slot: %d, tsf: %llu, tsftu: %u, intval: %u\n",
+ slot, tsf, tsftu, intval);
+
+ return slot;
+}
+
+void ath9k_htc_swba(struct ath9k_htc_priv *priv)
+{
+ struct ath_common *common = ath9k_hw_common(priv->ah);
+ unsigned long flags;
+ int slot;
+
+ spin_lock_irqsave(&priv->wmi->wmi_lock, flags);
+ if (priv->wmi->beacon_pending != 0) {
+ spin_unlock_irqrestore(&priv->wmi->wmi_lock, flags);
+ priv->cur_beacon_conf.bmiss_cnt++;
+ if (priv->cur_beacon_conf.bmiss_cnt > BSTUCK_THRESHOLD) {
+ ath_dbg(common, ATH_DBG_BEACON,
+ "Beacon stuck, HW reset\n");
+ ath9k_htc_reset(priv);
+ }
+ return;
+ }
+ spin_unlock_irqrestore(&priv->wmi->wmi_lock, flags);
+
+ if (priv->cur_beacon_conf.bmiss_cnt) {
+ ath_dbg(common, ATH_DBG_BEACON,
+ "Resuming beacon xmit after %u misses\n",
+ priv->cur_beacon_conf.bmiss_cnt);
+ priv->cur_beacon_conf.bmiss_cnt = 0;
+ }
+
+ slot = ath9k_htc_choose_bslot(priv);
+ spin_lock_bh(&priv->beacon_lock);
+ if (priv->cur_beacon_conf.bslot[slot] == NULL) {
+ spin_unlock_bh(&priv->beacon_lock);
+ return;
+ }
+ spin_unlock_bh(&priv->beacon_lock);
+
+ ath9k_htc_send_beacon(priv, slot);
+}
+
/* Currently, only for IBSS */
void ath9k_htc_beaconq_config(struct ath9k_htc_priv *priv)
{
@@ -298,6 +362,42 @@ void ath9k_htc_beaconq_config(struct ath9k_htc_priv *priv)
}
}
+void ath9k_htc_assign_bslot(struct ath9k_htc_priv *priv,
+ struct ieee80211_vif *vif)
+{
+ struct ath_common *common = ath9k_hw_common(priv->ah);
+ struct ath9k_htc_vif *avp = (struct ath9k_htc_vif *)vif->drv_priv;
+ int i = 0;
+
+ spin_lock_bh(&priv->beacon_lock);
+ for (i = 0; i < ATH9K_HTC_MAX_BCN_VIF; i++) {
+ if (priv->cur_beacon_conf.bslot[i] == NULL) {
+ avp->bslot = i;
+ break;
+ }
+ }
+
+ priv->cur_beacon_conf.bslot[avp->bslot] = vif;
+ spin_unlock_bh(&priv->beacon_lock);
+
+ ath_dbg(common, ATH_DBG_CONFIG,
+ "Added interface at beacon slot: %d\n", avp->bslot);
+}
+
+void ath9k_htc_remove_bslot(struct ath9k_htc_priv *priv,
+ struct ieee80211_vif *vif)
+{
+ struct ath_common *common = ath9k_hw_common(priv->ah);
+ struct ath9k_htc_vif *avp = (struct ath9k_htc_vif *)vif->drv_priv;
+
+ spin_lock_bh(&priv->beacon_lock);
+ priv->cur_beacon_conf.bslot[avp->bslot] = NULL;
+ spin_unlock_bh(&priv->beacon_lock);
+
+ ath_dbg(common, ATH_DBG_CONFIG,
+ "Removed interface at beacon slot: %d\n", avp->bslot);
+}
+
void ath9k_htc_beacon_config(struct ath9k_htc_priv *priv,
struct ieee80211_vif *vif)
{
diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_init.c b/drivers/net/wireless/ath/ath9k/htc_drv_init.c
index 8e04586..37a41fe 100644
--- a/drivers/net/wireless/ath/ath9k/htc_drv_init.c
+++ b/drivers/net/wireless/ath/ath9k/htc_drv_init.c
@@ -649,7 +649,7 @@ static int ath9k_init_priv(struct ath9k_htc_priv *priv,
{
struct ath_hw *ah = NULL;
struct ath_common *common;
- int ret = 0, csz = 0;
+ int i, ret = 0, csz = 0;
priv->op_flags |= OP_INVALID;
@@ -711,6 +711,9 @@ static int ath9k_init_priv(struct ath9k_htc_priv *priv,
if (ret)
goto err_queues;
+ for (i = 0; i < ATH9K_HTC_MAX_BCN_VIF; i++)
+ priv->cur_beacon_conf.bslot[i] = NULL;
+
ath9k_init_crypto(priv);
ath9k_init_channels_rates(priv);
ath9k_init_misc(priv);
diff --git a/drivers/net/wireless/ath/ath9k/htc_drv_main.c b/drivers/net/wireless/ath/ath9k/htc_drv_main.c
index 6494c7e..4980525 100644
--- a/drivers/net/wireless/ath/ath9k/htc_drv_main.c
+++ b/drivers/net/wireless/ath/ath9k/htc_drv_main.c
@@ -1273,9 +1273,13 @@ static int ath9k_htc_add_interface(struct ieee80211_hw *hw,
priv->vif_slot |= (1 << avp->index);
priv->nvifs++;
- priv->vif = vif;
INC_VIF(priv, vif->type);
+
+ if ((vif->type == NL80211_IFTYPE_AP) ||
+ (vif->type == NL80211_IFTYPE_ADHOC))
+ ath9k_htc_assign_bslot(priv, vif);
+
ath9k_htc_set_opmode(priv);
if (priv->ah->opmode == NL80211_IFTYPE_AP)
@@ -1312,12 +1316,16 @@ static void ath9k_htc_remove_interface(struct ieee80211_hw *hw,
priv->vif_slot &= ~(1 << avp->index);
ath9k_htc_remove_station(priv, vif, NULL);
- priv->vif = NULL;
if (priv->ah->opmode == NL80211_IFTYPE_AP)
cancel_delayed_work_sync(&priv->ath9k_ani_work);
DEC_VIF(priv, vif->type);
+
+ if ((vif->type == NL80211_IFTYPE_AP) ||
+ (vif->type == NL80211_IFTYPE_ADHOC))
+ ath9k_htc_remove_bslot(priv, vif);
+
ath9k_htc_set_opmode(priv);
ath_dbg(common, ATH_DBG_CONFIG, "Detach Interface at idx: %d\n", avp->index);
diff --git a/drivers/net/wireless/ath/ath9k/wmi.c b/drivers/net/wireless/ath/ath9k/wmi.c
index 5c36c66..768194d 100644
--- a/drivers/net/wireless/ath/ath9k/wmi.c
+++ b/drivers/net/wireless/ath/ath9k/wmi.c
@@ -124,7 +124,7 @@ void ath9k_swba_tasklet(unsigned long data)
{
struct ath9k_htc_priv *priv = (struct ath9k_htc_priv *)data;
- ath9k_htc_swba(priv, priv->wmi->beacon_pending);
+ ath9k_htc_swba(priv);
}
void ath9k_fatal_work(struct work_struct *work)
@@ -171,8 +171,10 @@ static void ath9k_wmi_ctrl_rx(void *priv, struct sk_buff *skb,
case WMI_SWBA_EVENTID:
swba = (struct wmi_event_swba *) wmi_event;
+ spin_lock(&wmi->wmi_lock);
wmi->tsf = be64_to_cpu(swba->tsf);
wmi->beacon_pending = swba->beacon_pending;
+ spin_unlock(&wmi->wmi_lock);
tasklet_schedule(&wmi->drv_priv->swba_tasklet);
break;
--
1.7.3.5
--
To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
