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authorFelix Fietkau <nbd@openwrt.org>2011-11-16 13:34:55 +0100
committerJohn W. Linville <linville@tuxdriver.com>2011-11-17 15:45:15 -0500
commitfcac4fb00eaefea375db9745464cc182389a1751 (patch)
treed1273395ac9e5798c6b79b870a72e560ee215a59
parent1f80c230a7d291a10045a3cdc2efd18a4185674d (diff)
downloadlinux-fcac4fb00eaefea375db9745464cc182389a1751.tar.gz
mac80211: call ieee80211_recalc_idle() after sending packets
Some drivers (e.g. ath9k) assume that it's safe to go into low-power mode
immediately after the idle state changes. To support that, mac80211 even
calls drv_flush() before that happens.
In some instances, mac80211 sent a packet right after recalculating the
idle state, this patch fixes that.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
-rw-r--r--net/mac80211/mlme.c15
-rw-r--r--net/mac80211/offchannel.c4
2 files changed, 11 insertions, 8 deletions
diff --git a/net/mac80211/mlme.c b/net/mac80211/mlme.c
index b25567a32f92..da17c3008782 100644
--- a/net/mac80211/mlme.c
+++ b/net/mac80211/mlme.c
@@ -1357,9 +1357,6 @@ static void __ieee80211_connection_loss(struct ieee80211_sub_if_data *sdata)
 	ieee80211_set_disassoc(sdata, true, true);
 	mutex_unlock(&ifmgd->mtx);
 
-	mutex_lock(&local->mtx);
-	ieee80211_recalc_idle(local);
-	mutex_unlock(&local->mtx);
 	/*
 	 * must be outside lock due to cfg80211,
 	 * but that's not a problem.
@@ -1368,6 +1365,10 @@ static void __ieee80211_connection_loss(struct ieee80211_sub_if_data *sdata)
 				       IEEE80211_STYPE_DEAUTH,
 				       WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY,
 				       NULL, true);
+
+	mutex_lock(&local->mtx);
+	ieee80211_recalc_idle(local);
+	mutex_unlock(&local->mtx);
 }
 
 void ieee80211_beacon_connection_loss_work(struct work_struct *work)
@@ -2134,9 +2135,6 @@ static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
 
 	ieee80211_set_disassoc(sdata, true, true);
 	mutex_unlock(&ifmgd->mtx);
-	mutex_lock(&local->mtx);
-	ieee80211_recalc_idle(local);
-	mutex_unlock(&local->mtx);
 	/*
 	 * must be outside lock due to cfg80211,
 	 * but that's not a problem.
@@ -2144,6 +2142,11 @@ static void ieee80211_sta_connection_lost(struct ieee80211_sub_if_data *sdata,
 	ieee80211_send_deauth_disassoc(sdata, bssid,
 			IEEE80211_STYPE_DEAUTH, reason,
 			NULL, true);
+
+	mutex_lock(&local->mtx);
+	ieee80211_recalc_idle(local);
+	mutex_unlock(&local->mtx);
+
 	mutex_lock(&ifmgd->mtx);
 }
 
diff --git a/net/mac80211/offchannel.c b/net/mac80211/offchannel.c
index 13427b194ced..767d26b3f98b 100644
--- a/net/mac80211/offchannel.c
+++ b/net/mac80211/offchannel.c
@@ -211,8 +211,6 @@ static void ieee80211_hw_roc_start(struct work_struct *work)
 		return;
 	}
 
-	ieee80211_recalc_idle(local);
-
 	if (local->hw_roc_skb) {
 		sdata = IEEE80211_DEV_TO_SUB_IF(local->hw_roc_dev);
 		ieee80211_tx_skb(sdata, local->hw_roc_skb);
@@ -226,6 +224,8 @@ static void ieee80211_hw_roc_start(struct work_struct *work)
 					  GFP_KERNEL);
 	}
 
+	ieee80211_recalc_idle(local);
+
 	mutex_unlock(&local->mtx);
 }