---

yaml --- r: 134212 b: refs/heads/master c: 078e1e6 h: refs/heads/master v: v3
git-mirror · Jan 29, 2009 · da913ce · da913ce
1 parent c6d5745
commit da913ce
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Showing 7 changed files with 67 additions and 15 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 07c1e852514e862e246b9f2962ce8fc0d7ac8ed1
+refs/heads/master: 078e1e60dd6c6b0d4bc8d58ccb80c008e8efc9ff
diff --git a/trunk/include/net/mac80211.h b/trunk/include/net/mac80211.h
@@ -646,24 +646,29 @@ struct ieee80211_if_init_conf {
  * @IEEE80211_IFCC_BSSID: The BSSID changed.
  * @IEEE80211_IFCC_BEACON: The beacon for this interface changed
  *	(currently AP and MESH only), use ieee80211_beacon_get().
+ * @IEEE80211_IFCC_BEACON_ENABLED: The enable_beacon value changed.
  */
 enum ieee80211_if_conf_change {
-	IEEE80211_IFCC_BSSID	= BIT(0),
-	IEEE80211_IFCC_BEACON	= BIT(1),
+	IEEE80211_IFCC_BSSID		= BIT(0),
+	IEEE80211_IFCC_BEACON		= BIT(1),
+	IEEE80211_IFCC_BEACON_ENABLED	= BIT(2),
 };
 
 /**
  * struct ieee80211_if_conf - configuration of an interface
  *
  * @changed: parameters that have changed, see &enum ieee80211_if_conf_change.
  * @bssid: BSSID of the network we are associated to/creating.
+ * @enable_beacon: Indicates whether beacons can be sent.
+ *	This is valid only for AP/IBSS/MESH modes.
  *
  * This structure is passed to the config_interface() callback of
  * &struct ieee80211_hw.
  */
 struct ieee80211_if_conf {
 	u32 changed;
 	const u8 *bssid;
+	bool enable_beacon;
 };
 
 /**

diff --git a/trunk/net/mac80211/cfg.c b/trunk/net/mac80211/cfg.c
@@ -523,7 +523,8 @@ static int ieee80211_config_beacon(struct ieee80211_sub_if_data *sdata,
 
 	kfree(old);
 
-	return ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON);
+	return ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON |
+					  IEEE80211_IFCC_BEACON_ENABLED);
 }
 
 static int ieee80211_add_beacon(struct wiphy *wiphy, struct net_device *dev,
@@ -583,7 +584,7 @@ static int ieee80211_del_beacon(struct wiphy *wiphy, struct net_device *dev)
 	synchronize_rcu();
 	kfree(old);
 
-	return ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON);
+	return ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON_ENABLED);
 }
 
 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */

diff --git a/trunk/net/mac80211/main.c b/trunk/net/mac80211/main.c
@@ -168,7 +168,6 @@ int ieee80211_if_config(struct ieee80211_sub_if_data *sdata, u32 changed)
 		return 0;
 
 	memset(&conf, 0, sizeof(conf));
-	conf.changed = changed;
 
 	if (sdata->vif.type == NL80211_IFTYPE_STATION ||
 	    sdata->vif.type == NL80211_IFTYPE_ADHOC)
@@ -183,9 +182,50 @@ int ieee80211_if_config(struct ieee80211_sub_if_data *sdata, u32 changed)
 		return -EINVAL;
 	}
 
+	switch (sdata->vif.type) {
+	case NL80211_IFTYPE_AP:
+	case NL80211_IFTYPE_ADHOC:
+	case NL80211_IFTYPE_MESH_POINT:
+		break;
+	default:
+		/* do not warn to simplify caller in scan.c */
+		changed &= ~IEEE80211_IFCC_BEACON_ENABLED;
+		if (WARN_ON(changed & IEEE80211_IFCC_BEACON))
+			return -EINVAL;
+		changed &= ~IEEE80211_IFCC_BEACON;
+		break;
+	}
+
+	if (changed & IEEE80211_IFCC_BEACON_ENABLED) {
+		if (local->sw_scanning) {
+			conf.enable_beacon = false;
+		} else {
+			/*
+			 * Beacon should be enabled, but AP mode must
+			 * check whether there is a beacon configured.
+			 */
+			switch (sdata->vif.type) {
+			case NL80211_IFTYPE_AP:
+				conf.enable_beacon =
+					!!rcu_dereference(sdata->u.ap.beacon);
+				break;
+			case NL80211_IFTYPE_ADHOC:
+			case NL80211_IFTYPE_MESH_POINT:
+				conf.enable_beacon = true;
+				break;
+			default:
+				/* not reached */
+				WARN_ON(1);
+				break;
+			}
+		}
+	}
+
 	if (WARN_ON(!conf.bssid && (changed & IEEE80211_IFCC_BSSID)))
 		return -EINVAL;
 
+	conf.changed = changed;
+
 	return local->ops->config_interface(local_to_hw(local),
 					    &sdata->vif, &conf);
 }

diff --git a/trunk/net/mac80211/mesh.c b/trunk/net/mac80211/mesh.c
@@ -442,7 +442,8 @@ void ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata)
 
 	ifmsh->housekeeping = true;
 	queue_work(local->hw.workqueue, &ifmsh->work);
-	ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON);
+	ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON |
+				   IEEE80211_IFCC_BEACON_ENABLED);
 }
 
 void ieee80211_stop_mesh(struct ieee80211_sub_if_data *sdata)

diff --git a/trunk/net/mac80211/mlme.c b/trunk/net/mac80211/mlme.c
@@ -1599,7 +1599,8 @@ static int ieee80211_sta_join_ibss(struct ieee80211_sub_if_data *sdata,
 
 	ifsta->probe_resp = skb;
 
-	ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON);
+	ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON |
+				   IEEE80211_IFCC_BEACON_ENABLED);
 
 
 	rates = 0;

diff --git a/trunk/net/mac80211/scan.c b/trunk/net/mac80211/scan.c
@@ -20,6 +20,7 @@
 
 #include <linux/wireless.h>
 #include <linux/if_arp.h>
+#include <linux/rtnetlink.h>
 #include <net/mac80211.h>
 #include <net/iw_handler.h>
 
@@ -472,8 +473,8 @@ void ieee80211_scan_completed(struct ieee80211_hw *hw)
 	netif_addr_unlock(local->mdev);
 	netif_tx_unlock_bh(local->mdev);
 
-	rcu_read_lock();
-	list_for_each_entry_rcu(sdata, &local->interfaces, list) {
+	mutex_lock(&local->iflist_mtx);
+	list_for_each_entry(sdata, &local->interfaces, list) {
 		/* Tell AP we're back */
 		if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 			if (sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED) {
@@ -482,16 +483,17 @@ void ieee80211_scan_completed(struct ieee80211_hw *hw)
 			}
 		} else
 			netif_tx_wake_all_queues(sdata->dev);
+
+		ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON_ENABLED);
 	}
-	rcu_read_unlock();
+	mutex_unlock(&local->iflist_mtx);
 
  done:
 	ieee80211_mlme_notify_scan_completed(local);
 	ieee80211_mesh_notify_scan_completed(local);
 }
 EXPORT_SYMBOL(ieee80211_scan_completed);
 
-
 void ieee80211_scan_work(struct work_struct *work)
 {
 	struct ieee80211_local *local =
@@ -633,8 +635,10 @@ int ieee80211_start_scan(struct ieee80211_sub_if_data *scan_sdata,
 
 	local->sw_scanning = true;
 
-	rcu_read_lock();
-	list_for_each_entry_rcu(sdata, &local->interfaces, list) {
+	mutex_lock(&local->iflist_mtx);
+	list_for_each_entry(sdata, &local->interfaces, list) {
+		ieee80211_if_config(sdata, IEEE80211_IFCC_BEACON_ENABLED);
+
 		if (sdata->vif.type == NL80211_IFTYPE_STATION) {
 			if (sdata->u.sta.flags & IEEE80211_STA_ASSOCIATED) {
 				netif_tx_stop_all_queues(sdata->dev);
@@ -643,7 +647,7 @@ int ieee80211_start_scan(struct ieee80211_sub_if_data *scan_sdata,
 		} else
 			netif_tx_stop_all_queues(sdata->dev);
 	}
-	rcu_read_unlock();
+	mutex_unlock(&local->iflist_mtx);
 
 	if (ssid) {
 		local->scan_ssid_len = ssid_len;