mac80211: integrate sta_notify_ps cmds into sta_notify

This patch replaces the newly introduced sta_notify_ps function,
which can be used to notify the driver about every power state
transition for all associated stations, by integrating its functionality
back into the original sta_notify callback.

Signed-off-by: Christian Lamparter <chunkeey@web.de>
Acked-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

drivers/net/wireless/mac80211_hwsim.c

@@ -522,6 +522,10 @@ static void mac80211_hwsim_sta_notify(struct ieee80211_hw *hw,
 	case STA_NOTIFY_REMOVE:
 		hwsim_clear_sta_magic(sta);
 		break;
+	case STA_NOTIFY_SLEEP:
+	case STA_NOTIFY_AWAKE:
+		/* TODO: make good use of these flags */
+		break;
 	}
 }
 

drivers/net/wireless/p54/p54common.c

@@ -1051,19 +1051,6 @@ static int p54_sta_unlock(struct ieee80211_hw *dev, u8 *addr)
 	return 0;
 }
 
-static void p54_sta_notify_ps(struct ieee80211_hw *dev,
-			      enum sta_notify_ps_cmd notify_cmd,
-			      struct ieee80211_sta *sta)
-{
-	switch (notify_cmd) {
-	case STA_NOTIFY_AWAKE:
-		p54_sta_unlock(dev, sta->addr);
-		break;
-	default:
-		break;
-	}
-}
-
 static void p54_sta_notify(struct ieee80211_hw *dev, struct ieee80211_vif *vif,
 			      enum sta_notify_cmd notify_cmd,
 			      struct ieee80211_sta *sta)
@@ -1076,6 +1063,10 @@ static void p54_sta_notify(struct ieee80211_hw *dev, struct ieee80211_vif *vif,
 		 * need to buffer frames for this station anymore.
 		 */
 
+		p54_sta_unlock(dev, sta->addr);
+		break;
+	case STA_NOTIFY_AWAKE:
+		/* update the firmware's filter table */
 		p54_sta_unlock(dev, sta->addr);
 		break;
 	default:
@@ -2027,7 +2018,6 @@ static const struct ieee80211_ops p54_ops = {
 	.add_interface		= p54_add_interface,
 	.remove_interface	= p54_remove_interface,
 	.set_tim		= p54_set_tim,
-	.sta_notify_ps		= p54_sta_notify_ps,
 	.sta_notify		= p54_sta_notify,
 	.set_key		= p54_set_key,
 	.config			= p54_config,

include/net/mac80211.h

@@ -773,25 +773,16 @@ struct ieee80211_sta {
  * enum sta_notify_cmd - sta notify command
  *
  * Used with the sta_notify() callback in &struct ieee80211_ops, this
- * indicates addition and removal of a station to station table.
+ * indicates addition and removal of a station to station table,
+ * or if a associated station made a power state transition.
  *
  * @STA_NOTIFY_ADD: a station was added to the station table
  * @STA_NOTIFY_REMOVE: a station being removed from the station table
- */
-enum sta_notify_cmd {
-	STA_NOTIFY_ADD, STA_NOTIFY_REMOVE
-};
-
-/**
- * enum sta_notify_ps_cmd - sta power save notify command
- *
- * Used with the sta_notify_ps() callback in &struct ieee80211_ops to
- * notify the driver if a station made a power state transition.
- *
  * @STA_NOTIFY_SLEEP: a station is now sleeping
  * @STA_NOTIFY_AWAKE: a sleeping station woke up
  */
-enum sta_notify_ps_cmd {
+enum sta_notify_cmd {
+	STA_NOTIFY_ADD, STA_NOTIFY_REMOVE,
 	STA_NOTIFY_SLEEP, STA_NOTIFY_AWAKE,
 };
 
@@ -1258,11 +1249,9 @@ enum ieee80211_ampdu_mlme_action {
  *
  * @set_rts_threshold: Configuration of RTS threshold (if device needs it)
  *
- * @sta_notify: Notifies low level driver about addition or removal of an
- *	associated station, AP, IBSS/WDS/mesh peer etc. Must be atomic.
- *
- * @sta_ps_notify: Notifies low level driver about the power state transition
- *	of a associated station. Must be atomic.
+ * @sta_notify: Notifies low level driver about addition, removal or power
+ *	state transition of an associated station, AP,  IBSS/WDS/mesh peer etc.
+ *	Must be atomic.
  *
  * @conf_tx: Configure TX queue parameters (EDCF (aifs, cw_min, cw_max),
  *	bursting) for a hardware TX queue.
@@ -1329,8 +1318,6 @@ struct ieee80211_ops {
 	int (*set_rts_threshold)(struct ieee80211_hw *hw, u32 value);
 	void (*sta_notify)(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 			enum sta_notify_cmd, struct ieee80211_sta *sta);
-	void (*sta_notify_ps)(struct ieee80211_hw *hw,
-			enum sta_notify_ps_cmd, struct ieee80211_sta *sta);
 	int (*conf_tx)(struct ieee80211_hw *hw, u16 queue,
 		       const struct ieee80211_tx_queue_params *params);
 	int (*get_tx_stats)(struct ieee80211_hw *hw,

net/mac80211/rx.c

@@ -658,9 +658,9 @@ static void ap_sta_ps_start(struct sta_info *sta)
 
 	atomic_inc(&sdata->bss->num_sta_ps);
 	set_and_clear_sta_flags(sta, WLAN_STA_PS, WLAN_STA_PSPOLL);
-	if (local->ops->sta_notify_ps)
-		local->ops->sta_notify_ps(local_to_hw(local), STA_NOTIFY_SLEEP,
-					  &sta->sta);
+	if (local->ops->sta_notify)
+		local->ops->sta_notify(local_to_hw(local), &sdata->vif,
+					STA_NOTIFY_SLEEP, &sta->sta);
 #ifdef CONFIG_MAC80211_VERBOSE_PS_DEBUG
 	printk(KERN_DEBUG "%s: STA %pM aid %d enters power save mode\n",
 	       sdata->dev->name, sta->sta.addr, sta->sta.aid);
@@ -677,9 +677,9 @@ static int ap_sta_ps_end(struct sta_info *sta)
 	atomic_dec(&sdata->bss->num_sta_ps);
 
 	clear_sta_flags(sta, WLAN_STA_PS | WLAN_STA_PSPOLL);
-	if (local->ops->sta_notify_ps)
-		local->ops->sta_notify_ps(local_to_hw(local), STA_NOTIFY_AWAKE,
-					  &sta->sta);
+	if (local->ops->sta_notify)
+		local->ops->sta_notify(local_to_hw(local), &sdata->vif,
+					STA_NOTIFY_AWAKE, &sta->sta);
 
 	if (!skb_queue_empty(&sta->ps_tx_buf))
 		sta_info_clear_tim_bit(sta);