---

yaml
---
r: 247616
b: refs/heads/master
c: 79f460c
h: refs/heads/master
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 807f8a8c300435d5483e8d78df9dcdbc27333166
+refs/heads/master: 79f460ca49d8d5700756ab7071c951311c7f29cc

trunk/include/net/mac80211.h

@@ -537,6 +537,21 @@ struct ieee80211_tx_info {
 	};
 };
 
+/**
+ * ieee80211_sched_scan_ies - scheduled scan IEs
+ *
+ * This structure is used to pass the appropriate IEs to be used in scheduled
+ * scans for all bands.  It contains both the IEs passed from the userspace
+ * and the ones generated by mac80211.
+ *
+ * @ie: array with the IEs for each supported band
+ * @len: array with the total length of the IEs for each band
+ */
+struct ieee80211_sched_scan_ies {
+	u8 *ie[IEEE80211_NUM_BANDS];
+	size_t len[IEEE80211_NUM_BANDS];
+};
+
 static inline struct ieee80211_tx_info *IEEE80211_SKB_CB(struct sk_buff *skb)
 {
 	return (struct ieee80211_tx_info *)skb->cb;
@@ -1693,6 +1708,13 @@ enum ieee80211_ampdu_mlme_action {
  *	any error unless this callback returned a negative error code.
  *	The callback can sleep.
  *
+ * @sched_scan_start: Ask the hardware to start scanning repeatedly at
+ *	specific intervals.  The driver must call the
+ *	ieee80211_sched_scan_results() function whenever it finds results.
+ *	This process will continue until sched_scan_stop is called.
+ *
+ * @sched_scan_stop: Tell the hardware to stop an ongoing scheduled scan.
+ *
  * @sw_scan_start: Notifier function that is called just before a software scan
  *	is started. Can be NULL, if the driver doesn't need this notification.
  *	The callback can sleep.
@@ -1877,6 +1899,12 @@ struct ieee80211_ops {
 				u32 iv32, u16 *phase1key);
 	int (*hw_scan)(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 		       struct cfg80211_scan_request *req);
+	int (*sched_scan_start)(struct ieee80211_hw *hw,
+				struct ieee80211_vif *vif,
+				struct cfg80211_sched_scan_request *req,
+				struct ieee80211_sched_scan_ies *ies);
+	void (*sched_scan_stop)(struct ieee80211_hw *hw,
+			       struct ieee80211_vif *vif);
 	void (*sw_scan_start)(struct ieee80211_hw *hw);
 	void (*sw_scan_complete)(struct ieee80211_hw *hw);
 	int (*get_stats)(struct ieee80211_hw *hw,
@@ -2593,6 +2621,28 @@ void ieee80211_wake_queues(struct ieee80211_hw *hw);
  */
 void ieee80211_scan_completed(struct ieee80211_hw *hw, bool aborted);
 
+/**
+ * ieee80211_sched_scan_results - got results from scheduled scan
+ *
+ * When a scheduled scan is running, this function needs to be called by the
+ * driver whenever there are new scan results available.
+ *
+ * @hw: the hardware that is performing scheduled scans
+ */
+void ieee80211_sched_scan_results(struct ieee80211_hw *hw);
+
+/**
+ * ieee80211_sched_scan_stopped - inform that the scheduled scan has stopped
+ *
+ * When a scheduled scan is running, this function can be called by
+ * the driver if it needs to stop the scan to perform another task.
+ * Usual scenarios are drivers that cannot continue the scheduled scan
+ * while associating, for instance.
+ *
+ * @hw: the hardware that is performing scheduled scans
+ */
+void ieee80211_sched_scan_stopped(struct ieee80211_hw *hw);
+
 /**
  * ieee80211_iterate_active_interfaces - iterate active interfaces
  *

trunk/net/mac80211/cfg.c

@@ -1362,6 +1362,31 @@ static int ieee80211_scan(struct wiphy *wiphy,
 	return ieee80211_request_scan(sdata, req);
 }
 
+static int
+ieee80211_sched_scan_start(struct wiphy *wiphy,
+			   struct net_device *dev,
+			   struct cfg80211_sched_scan_request *req)
+{
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+	if (!sdata->local->ops->sched_scan_start)
+		return -EOPNOTSUPP;
+
+	return ieee80211_request_sched_scan_start(sdata, req);
+}
+
+static int
+ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev,
+			  bool driver_initiated)
+{
+	struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
+
+	if (!sdata->local->ops->sched_scan_stop)
+		return -EOPNOTSUPP;
+
+	return ieee80211_request_sched_scan_stop(sdata, driver_initiated);
+}
+
 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
 			  struct cfg80211_auth_request *req)
 {
@@ -2103,6 +2128,8 @@ struct cfg80211_ops mac80211_config_ops = {
 	.suspend = ieee80211_suspend,
 	.resume = ieee80211_resume,
 	.scan = ieee80211_scan,
+	.sched_scan_start = ieee80211_sched_scan_start,
+	.sched_scan_stop = ieee80211_sched_scan_stop,
 	.auth = ieee80211_auth,
 	.assoc = ieee80211_assoc,
 	.deauth = ieee80211_deauth,

trunk/net/mac80211/driver-ops.h

@@ -212,12 +212,39 @@ static inline int drv_hw_scan(struct ieee80211_local *local,
 
 	might_sleep();
 
-	trace_drv_hw_scan(local, sdata, req);
+	trace_drv_hw_scan(local, sdata);
 	ret = local->ops->hw_scan(&local->hw, &sdata->vif, req);
 	trace_drv_return_int(local, ret);
 	return ret;
 }
 
+static inline int
+drv_sched_scan_start(struct ieee80211_local *local,
+		     struct ieee80211_sub_if_data *sdata,
+		     struct cfg80211_sched_scan_request *req,
+		     struct ieee80211_sched_scan_ies *ies)
+{
+	int ret;
+
+	might_sleep();
+
+	trace_drv_sched_scan_start(local, sdata);
+	ret = local->ops->sched_scan_start(&local->hw, &sdata->vif,
+					      req, ies);
+	trace_drv_return_int(local, ret);
+	return ret;
+}
+
+static inline void drv_sched_scan_stop(struct ieee80211_local *local,
+				       struct ieee80211_sub_if_data *sdata)
+{
+	might_sleep();
+
+	trace_drv_sched_scan_stop(local, sdata);
+	local->ops->sched_scan_stop(&local->hw, &sdata->vif);
+	trace_drv_return_void(local);
+}
+
 static inline void drv_sw_scan_start(struct ieee80211_local *local)
 {
 	might_sleep();

trunk/net/mac80211/driver-trace.h

@@ -98,6 +98,27 @@ DECLARE_EVENT_CLASS(local_u32_evt,
 	)
 );
 
+DECLARE_EVENT_CLASS(local_sdata_evt,
+	TP_PROTO(struct ieee80211_local *local,
+		 struct ieee80211_sub_if_data *sdata),
+	TP_ARGS(local, sdata),
+
+	TP_STRUCT__entry(
+		LOCAL_ENTRY
+		VIF_ENTRY
+	),
+
+	TP_fast_assign(
+		LOCAL_ASSIGN;
+		VIF_ASSIGN;
+	),
+
+	TP_printk(
+		LOCAL_PR_FMT VIF_PR_FMT,
+		LOCAL_PR_ARG, VIF_PR_ARG
+	)
+);
+
 DEFINE_EVENT(local_only_evt, drv_return_void,
 	TP_PROTO(struct ieee80211_local *local),
 	TP_ARGS(local)
@@ -433,27 +454,22 @@ TRACE_EVENT(drv_update_tkip_key,
 	)
 );
 
-TRACE_EVENT(drv_hw_scan,
+DEFINE_EVENT(local_sdata_evt, drv_hw_scan,
 	TP_PROTO(struct ieee80211_local *local,
-		 struct ieee80211_sub_if_data *sdata,
-		 struct cfg80211_scan_request *req),
-
-	TP_ARGS(local, sdata, req),
-
-	TP_STRUCT__entry(
-		LOCAL_ENTRY
-		VIF_ENTRY
-	),
+		 struct ieee80211_sub_if_data *sdata),
+	TP_ARGS(local, sdata)
+);
 
-	TP_fast_assign(
-		LOCAL_ASSIGN;
-		VIF_ASSIGN;
-	),
+DEFINE_EVENT(local_sdata_evt, drv_sched_scan_start,
+	TP_PROTO(struct ieee80211_local *local,
+		 struct ieee80211_sub_if_data *sdata),
+	TP_ARGS(local, sdata)
+);
 
-	TP_printk(
-		LOCAL_PR_FMT VIF_PR_FMT,
-		LOCAL_PR_ARG,VIF_PR_ARG
-	)
+DEFINE_EVENT(local_sdata_evt, drv_sched_scan_stop,
+	TP_PROTO(struct ieee80211_local *local,
+		 struct ieee80211_sub_if_data *sdata),
+	TP_ARGS(local, sdata)
 );
 
 DEFINE_EVENT(local_only_evt, drv_sw_scan_start,
@@ -1180,6 +1196,42 @@ TRACE_EVENT(api_scan_completed,
 	)
 );
 
+TRACE_EVENT(api_sched_scan_results,
+	TP_PROTO(struct ieee80211_local *local),
+
+	TP_ARGS(local),
+
+	TP_STRUCT__entry(
+		LOCAL_ENTRY
+	),
+
+	TP_fast_assign(
+		LOCAL_ASSIGN;
+	),
+
+	TP_printk(
+		LOCAL_PR_FMT, LOCAL_PR_ARG
+	)
+);
+
+TRACE_EVENT(api_sched_scan_stopped,
+	TP_PROTO(struct ieee80211_local *local),
+
+	TP_ARGS(local),
+
+	TP_STRUCT__entry(
+		LOCAL_ENTRY
+	),
+
+	TP_fast_assign(
+		LOCAL_ASSIGN;
+	),
+
+	TP_printk(
+		LOCAL_PR_FMT, LOCAL_PR_ARG
+	)
+);
+
 TRACE_EVENT(api_sta_block_awake,
 	TP_PROTO(struct ieee80211_local *local,
 		 struct ieee80211_sta *sta, bool block),

trunk/net/mac80211/ieee80211_i.h

@@ -847,6 +847,9 @@ struct ieee80211_local {
 	int scan_channel_idx;
 	int scan_ies_len;
 
+	bool sched_scanning;
+	struct ieee80211_sched_scan_ies sched_scan_ies;
+
 	unsigned long leave_oper_channel_time;
 	enum mac80211_scan_state next_scan_state;
 	struct delayed_work scan_work;
@@ -1154,6 +1157,12 @@ ieee80211_rx_bss_get(struct ieee80211_local *local, u8 *bssid, int freq,
 void ieee80211_rx_bss_put(struct ieee80211_local *local,
 			  struct ieee80211_bss *bss);
 
+/* scheduled scan handling */
+int ieee80211_request_sched_scan_start(struct ieee80211_sub_if_data *sdata,
+				       struct cfg80211_sched_scan_request *req);
+int ieee80211_request_sched_scan_stop(struct ieee80211_sub_if_data *sdata,
+				      bool driver_initiated);
+
 /* off-channel helpers */
 bool ieee80211_cfg_on_oper_channel(struct ieee80211_local *local);
 void ieee80211_offchannel_enable_all_ps(struct ieee80211_local *local,

trunk/net/mac80211/main.c

@@ -358,7 +358,8 @@ static void ieee80211_restart_work(struct work_struct *work)
 	flush_workqueue(local->workqueue);
 
 	mutex_lock(&local->mtx);
-	WARN(test_bit(SCAN_HW_SCANNING, &local->scanning),
+	WARN(test_bit(SCAN_HW_SCANNING, &local->scanning) ||
+	     local->sched_scanning,
 		"%s called with hardware scan in progress\n", __func__);
 	mutex_unlock(&local->mtx);
 
@@ -833,6 +834,9 @@ int ieee80211_register_hw(struct ieee80211_hw *hw)
 	if (!local->ops->remain_on_channel)
 		local->hw.wiphy->max_remain_on_channel_duration = 5000;
 
+	if (local->ops->sched_scan_start)
+		local->hw.wiphy->flags |= WIPHY_FLAG_SUPPORTS_SCHED_SCAN;
+
 	result = wiphy_register(local->hw.wiphy);
 	if (result < 0)
 		goto fail_wiphy_register;

trunk/net/mac80211/rx.c

@@ -404,11 +404,13 @@ ieee80211_rx_h_passive_scan(struct ieee80211_rx_data *rx)
 	struct ieee80211_rx_status *status = IEEE80211_SKB_RXCB(rx->skb);
 	struct sk_buff *skb = rx->skb;
 
-	if (likely(!(status->rx_flags & IEEE80211_RX_IN_SCAN)))
+	if (likely(!(status->rx_flags & IEEE80211_RX_IN_SCAN) &&
+		   !local->sched_scanning))
 		return RX_CONTINUE;
 
 	if (test_bit(SCAN_HW_SCANNING, &local->scanning) ||
-	    test_bit(SCAN_SW_SCANNING, &local->scanning))
+	    test_bit(SCAN_SW_SCANNING, &local->scanning) ||
+	    local->sched_scanning)
 		return ieee80211_scan_rx(rx->sdata, skb);
 
 	/* scanning finished during invoking of handlers */